Method of speckle-noise pattern reduction and apparatus therefor based on reducing the temporal-coherence of the planar laser illumination beam before it illuminates the target object by applying temporal phase modulation techniques during the transmission of the PLIB towards the target

A planar laser illumination module (PLIM) for use in a PLIIM system, said PLIM comprising:

• a laser diode for producing a laser beam;
• a focusing lens for focusing said laser beam to its minimum beam width at a point which is the farthest distance at which said PLIIM based system is designed to capture images, and
• a cylindrical lens element for expanding (i.e. spreading out) said laser beam along the direction of beam propagation so that a substantially planar laser illumination beam (PLIB) is produced, which is characterized by a plane of propagation that is coplanar with the direction of beam propagation.

An optical process carried out within an LED-based PLIM having a light emitting diode (LED) with a light emitting source, a focusing lens and a beam expanding element, said optical process comprising:

• using said focusing lens to focus a reduced size image of the light emitting source of said LED towards the farthest working distance in the PLIIM-based system;
• and
• transmitting the light rays associated with said reduced-sized image through said beam expanding element to produce a incoherent planar light illumination beam.

An LED-based PLIM for use in PLIIM-based systems, comprising a linear-type LED, a focusing lens, collimating lens and a cylindrical lens element, each being mounted within a compact barrel structure, for the purpose of producing a spatially-incoherent planar light illumination beam (PLIB) therefrom.

An LED-based PLIM for use in PLIIM-based systems having relatively short working distances (e.g. less than 18 inches or so), wherein a linear-type LED, an optional focusing lens element and a cylindrical lens element are each mounted within compact barrel structure, for the purpose of producing a spatially-incoherent planar light illumination beam (PLIB) therefrom.

An optical process carried within an LED-based PLIM, wherein (1) the focusing lens focuses a reduced-size image of the light emitting source of the LED towards the farthest working distance in the PLIIM-based system, and (2) the light rays associated with the reduced-size of the image LED source are transmitted through the cylindrical lens element to produce a spatially-incoherent planar light illumination beam (PLIB).

A LED-based PLIM for best use in PLIIM-based systems having relatively short working distances, wherein a linear-type LED, a focusing lens element, collimating lens element and a cylindrical lens element are each mounted within compact barrel structure, for the purpose of producing a spatially-incoherent planar light illumination beam (PLIB) therefrom.

An LED-based PLIM chip for use in PLIIM-based systems having relatively short working distances, wherein a linear-type light emitting diode (LED) array, a focusing-type microlens array, collimating type microlens array, and a cylindrical-type microlens array are each mounted within the IC package of the PLIM chip, for the purpose of producing a spatially-incoherent planar light illumination beam (PLIB) therefrom.

An optical process carried within the LED-based PLIM, wherein (1) the focusing lens element focuses a reduced-size image of the light emitting source of the LED towards a focal point within the barrel structure, (2) the collimating lens element collimates the light rays associated with the reduced-size image of the light emitting source, and (3) the cylindrical lens element diverges (i.e. spreads) the collimated light beam so as to produce a spatially-incoherent planar light illumination beam (PLIB).

An optical process carried within the LED-based PLIM, wherein (1) each focusing lenslet focuses a reduced-size image of a light emitting source of an LED towards a focal point above the focusing-type microlens array, (2) each collimating lenslet collimates the light rays associated with the reduced-size image of the light emitting source, and (3) each cylindrical lenslet diverges the collimated light beam so as to produce a spatially-incoherent planar light illumination beam (PLIB) component, which collectively produce a composite spatially-incoherent PLIB from the LED-based PLIM.

A miniature planar laser illumination module (PLIM) on a semiconductor chip that can be fabricated by aligning and mounting a micro-sized cylindrical lens array upon a linear array of surface emit lasers (SELs) formed on a semiconductor substrate, encapsulated (i.e. encased) in a semiconductor package provided with electrical pins and a light transmission window, and emitting laser emission in the direction normal to the semiconductor substrate.

A miniature planar laser illumination module (PLIM) on a semiconductor, wherein the laser output therefrom is a planar laser illumination beam (PLIB) composed of numerous (e.g. 100-400 or more) spatially incoherent laser beams emitted from the linear array of SELs.

A miniature planar laser illumination module (PLIM) on a semiconductor, wherein each SEL in the laser diode array can be designed to emit coherent radiation at a different characteristic wavelengths to produce an array of laser beams which are substantially temporally and spatially incoherent with respect to each other.

A PLIM-based semiconductor chip, which produces a temporally and spatially coherent-reduced planar laser illumination beam (PLIB) capable of illuminating objects and producing digital images having substantially reduced speckle-noise patterns observable at the image detector of the PLIIM-based system in which the PLIM is employed.

A PLIM-based semiconductor which can be made to illuminate objects outside of the visible portion of the electromagnetic spectrum (e.g. over the UV and/or IR portion of the spectrum).

A PLIM-based semiconductor chip which embodies laser mode-locking principles so that the PLIB transmitted from the chip is temporal intensity-modulated at a sufficient high rate so as to produce ultra-short planes light ensuring substantial levels of speckle-noise pattern reduction during object illumination and imaging applications.

A PLIM-based semiconductor chip which contains a large number of VCSELs (i.e. real laser sources) fabricated on semiconductor chip so that speckle-noise pattern levels can be substantially reduced by an amount proportional to the square root of the number of independent laser sources (real or virtual) employed therein.

A miniature planar laser illumination module (PLIM) on a semiconductor chip which does not require any mechanical parts or components to produce a spatially and/or temporally coherence reduced PLIB during system operation.

A planar laser illumination module (PLIM) realized on a semiconductor chip, wherein a micro-sized (diffractive or refractive) cylindrical lens array is mounted upon a linear array of surface emitting lasers (SELs) fabricated on a semiconductor substrate, and encased within an integrated circuit (IC) package, so as to produce a planar laser illumination beam (PLIB) composed of numerous (e.g. 100-400) spatially incoherent laser beam components emitted from said linear array of SELs.

A system for illuminating an object and forming an image thereof, comprising:

• an image formation and detection module having a field of view (FOV) focused at an image detecting array;
• and
• a planar laser illumination array (PLIA) for producing a planar laser illumination beam (PLIB) having substantially-planar spatial distribution characteristics that extend through the field of view (FOV) of said image formation and detection module, so that laser light reflected off an object illuminated by said planar laser illumination beam is focused along said field of view and onto said image detecting array to form an image of said illuminated object.

A method of illuminating an object and forming an image thereof, comprising the steps of:

• providing a field of view (FOV) focused at an image detecting array;
• and
• producing a planar laser illumination beam having substantially-planar spatial distribution characteristics that extend through said field of view (FOV) so that laser light reflected off an object illuminated by said planar laser illumination beam is focused along said field of view and onto said image detecting array to form an image of said illuminated object.

A system for illuminating the surface of objects using a linear array of laser light emitting devices configured together to produce a substantially planar beam of laser illumination which extends in substantially the same plane as the field of view of the linear array of electronic image detection cells of the system, along at least a portion of its optical path within its working distance,

A system for producing digital images of objects using a visible laser diode array for producing a planar laser illumination beam for illuminating the surfaces of such objects, and also an electronic image detection array for detecting laser light reflected off the illuminated objects during illumination and imaging operations.

A system for illuminating the surfaces of object to be imaged, using an array of planar laser illumination arrays which employ VLDs that are smaller, and cheaper, run cooler, draw less power, have longer lifetimes, and require simpler optics (because their frequency bandwidths are very small compared to the entire spectrum of visible light).

A system for illuminating the surfaces of objects to be imaged, wherein the VLD concentrates all of its output power into a thin laser beam illumination plane which spatially coincides exactly with the field of view of the imaging optics of the system, so very little light energy is wasted during object imaging operations.

A planar laser illumination and imaging system, wherein the working distance of the system can be easily extended by simply changing the beam focusing and imaging optics, and without increasing the output power of the visible laser diode (VLD) sources employed therein.

A planar laser illumination and imaging system, wherein each planar laser illumination beam is focused so that the minimum width thereof (e.g. along its non-spreading direction) occurs at a point or plane which is the farthest object distance at which the system is designed to capture images.

A planar laser illumination and imaging system, wherein a fixed focal length imaging subsystem is employed, and a laser beam focusing technique is employed to compensate for decreases in the power density of the incident planar illumination beam due to the fact that the width of the planar laser illumination beam for increases increasing distances away from the imaging subsystem.

A planar laser illumination and imaging system, wherein a variable focal length (i.e. zoom) imaging subsystem is employed, and a laser beam focusing technique is used to help compensate for (i) decreases in the power density of the incident illumination beam due to the fact that the width of the planar laser illumination beam (i.e. beamwidth) along the direction of the beam's planar extent increases for increasing distances away from the imaging subsystem, and (ii) any 1/r2 type losses that would typically occur when using the planar laser illumination beam.

A planar laser illumination and imaging system, wherein scanned objects need only be illuminated along a single plane which is coplanar with a planar section of the field of view of the image formation and detection module being used in the system.

A planar laser illumination and imaging system, wherein low-power, light-weight, high-response, ultra-compact, high-efficiency solid-state illumination producing devices, such as visible laser diodes (VLDs), are used to selectively illuminate ultra-narrow sections of a target object during image formation and detection operations, in contrast with high-power, low-response, heavy-weight, bulky, low-efficiency lighting equipment (e.g. sodium vapor lights) required by prior art illumination and image detection systems.

A planar laser illumination and imaging system, wherein a planar laser illumination technique enables high-speed modulation of the planar laser illumination beam, and use of simple (i.e. substantially monochromatic) lens designs for substantially monochromatic optical illumination and image formation and detection operations.

A planar laser illumination and imaging system, wherein special measures are undertaken to ensure that (i) a minimum safe distance is maintained between the VLDs in each PLIM and the user's eyes using a light shield, and (ii) the planar laser illumination beam is prevented from directly scattering into the FOV of the image formation and detection module, from within the system housing.

A planar laser illumination and imaging system, wherein a planar laser illumination beam and the field of view of the image formation and detection module do not overlap on any optical surface within the PLIIM system.

A planar laser illumination and imaging system, wherein planar laser illumination beams are permitted to spatially overlap with the FOV of the imaging lens of the system only outside of the system housing, measured at a particular point beyond the light transmission window, through which the FOV is projected.

A planar laser illumination and imaging system, wherein planar laser illumination arrays (PLIAs) and the image formation and detection (IFD) module are mounted in strict optical alignment on an optical bench such that there is no relative motion, caused by vibration or temperature changes, is permitted between the imaging lens within the IFD module and the VLD/cylindrical lens assemblies within the PLIAs.

A planar laser illumination and imaging system, wherein the imaging module is realized as a photographic image recording module.

A planar laser illumination and imaging system, wherein the imaging module is realized as an array of electronic image detection cells having short integration time settings for high-speed image capture operations.

A planar laser illumination and imaging system, wherein a pair of planar laser illumination arrays are mounted about an image formation and detection module having a field of view, so as to produce a substantially planar laser illumination beam which is coplanar with the field of view during object illumination and imaging operations.

A planar laser illumination and imaging system, wherein an image formation and detection module projects a field of view through a first light transmission aperture formed in the system housing, and a pair of planar laser illumination arrays project a pair of planar laser illumination beams through second set of light transmission apertures which are optically isolated from the first light transmission aperture to prevent laser beam scattering within the housing of the system.

A planar laser illumination and imaging system, the principle of Gaussian summation of light intensity distributions is employed to produce a planar laser illumination beam having a power density across the width the beam which is substantially the same for both far and near fields of the system.

A system for producing images of objects by focusing a planar laser illumination beam within the field of view of an imaging lens so that the minimum width thereof along its non-spreading direction occurs at the farthest object distance of the imaging lens.

A PLIIM-based system having near and far field regions, comprising:

• a planar laser illumination array (PLIA) having a plurality of visible laser diodes (VLDs),
• wherein the power density contributions of the individual visible laser diodes in the planar laser illumination array are additively combined to produce a planar laser illumination beam (PLIB) having substantially uniform power density characteristics in the near and far field regions of the system.

A PLIIM system comprising:

• a linear image formation and detection module;
• and
• a pair of planar laser illumination arrays arranged in relation to the image formation and detection module such that the field of view thereof is oriented in a direction that is coplanar with the plane of the stationary planar laser illumination beams produced by the planar laser illumination arrays, without using any laser beam or field of view folding mirrors.

A PLIIM-based system, wherein a pair of planar laser illumination arrays (PLIAs) are mounted on opposite sides of a linear type image formation and detection (IDF) module having a field of view, such that the planar laser illumination arrays produce a plane of laser beam illumination (i.e. light) which is disposed substantially coplanar with the field of view of the image formation and detection module, and that the planar laser illumination beam and the field of view of the image formation and detection module move synchronously together while maintaining their coplanar relationship with each other as the planar laser illumination beam and FOV are automatically scanned over a 3-D region of space during object illumination and image detection operations.

A PLIIM-based system, wherein a pair of planar laser illumination arrays (PLIAs) are mounted on opposite sides of a linear (i.e. 1-dimensional) type image formation and detection (IFD) module having a fixed focal length imaging lens, a variable focal distance and a fixed field of view (FOV) so that the planar laser illumination arrays produce a plane of laser beam illumination which is disposed substantially coplanar with the field view of the image formation and detection module during object illumination and image detection operations carried out on bar code symbol structures and other graphical indicia which may embody information within its structure.

A PLIIM-based system comprising:

• an image formation and detection module having a field of view (FOV);
• and
• a pair of planar laser illumination arrays for producing first and second stationary planar laser illumination beams in an imaging direction that is coplanar with the field of view of the image formation and detection module.

A PLIIM-based system, wherein the linear image formation and detection module is shown comprising a linear array of photo-electronic detectors realized using CCD technology, and each planar laser illumination array is shown comprising an array of planar laser illumination modules.

The PLIIM-based system of claim 100, wherein said linear type image formation and detection (IFD) module further comprises an imaging subsystem having a fixed focal length imaging lens, a variable focal distance and a fixed field of view is arranged on an optical bench, mounted within a compact module housing, and responsive to focus control signals generated by the camera control computer of the PLIIM-based system.

A PLIIM-based system, wherein a pair of planar laser illumination arrays (PLIAs) are mounted on opposite sides of a linear image formation and detection (IFD) module having a fixed focal length imaging lens, a variable focal distance and fixed field of view (FOV), so that the planar illumination arrays produces a plane of laser beam illumination which is disposed substantially coplanar with the field view of the image formation and detection module and synchronously moved therewith while the planar laser illumination beams are automatically scanned over a 3-D region of space during object illumination and imaging operations.

A PLIIM-based system, wherein a pair of planar laser illumination arrays (PLIAs) are mounted on opposite sides of a linear image formation and detection (IFD) module having a variable focal length imaging lens, a variable focal distance and a variable field of view, so that the planar laser illumination arrays produce a stationary plane of laser beam illumination (i.e. light) which is disposed substantially coplanar with the field view of the image formation and detection module during object illumination and image detection operations carried out on bar code symbols and other graphical indicia by the PLIIM-based system of the present invention.

A PLIIM-based system comprising:

• an image formation and detection module;
• and
• a pair of planar laser illumination arrays arranged in relation to the image formation and detection module such that the stationary field of view thereof is oriented in an imaging direction that is coplanar with the stationary plane of laser illumination produced by the planar laser illumination arrays, without using any laser beam or field of view folding mirrors.

A PLIIM-based system, wherein a pair of planar laser illumination arrays (PLIAs) are mounted on opposite sides of a linear image formation and detection (IFD) module having a variable focal length imaging lens, a variable focal distance and a variable field of view, so that the planar illumination arrays produce a plane of laser beam illumination which is disposed substantially coplanar with the field view of the image formation and detection module and synchronously moved therewith as the planar laser illumination beams are scanned across a 3-D region of space during object illumination and image detection operations.

A PLIIM-based system, wherein a pair of planar laser illumination arrays (PLIAs) are mounted on opposite sides of an area (i.e. 2-dimensional) type image formation and detection module (IFDM) having a fixed focal length camera lens, a fixed focal distance and fixed field of view projected through a 3-D scanning region, so that the planar laser illumination arrays produce a plane of laser illumination which is disposed substantially coplanar with sections of the field view of the image formation and detection module while the planar laser illumination beam is automatically scanned across the 3-D scanning region during object illumination and imaging operations carried out on a bar code symbol or other graphical indicia by the PLIIM-based system.

A PLIIM-based system comprising a pair of planar illumination arrays, an area-type image formation and detection module, a pair of planar laser illumination beam sweeping mirrors, an image frame grabber, an image data buffer, an image processing computer, and a camera control computer.

A PLIIM-based system, wherein a pair of planar laser illumination arrays (PLIAs) are mounted on opposite sides of an area (i.e. 2-D) type image formation and detection (IFD) module having a fixed focal length imaging lens, a variable focal distance and a fixed field of view (FOV) projected through a 3-D scanning region, so that the planar laser illumination arrays produce a plane of laser beam illumination which is disposed substantially coplanar with sections of the field view of the image formation and detection module as the planar laser illumination beams are automatically scanned through the 3-D scanning region during object illumination and image detection operations carried out on a bar code symbol or other graphical indicia by the PLIIM-based system.

A planar laser illumination and imaging module (PLIIM) realized on a semiconductor chip, comprising a pair of micro-sized (diffractive or refractive) cylindrical lens arrays mounted upon a pair of large linear arrays of surface emitting lasers (SELs) fabricated on opposite sides of a linear CCD image detection array.

A PLIIM-based semiconductor chip mounted on a mechanically oscillating scanning element in order to sweep both the FOV of a linear image detection array and coplanar planar laser illumination beam (PLIB) through a 3-D volume of space in which objects bearing bar code and other machine-readable indicia may pass.

A PLIIM-based semiconductor chip comprising a plurality of linear SEL arrays which are electronically-activated to electro-optically scan (i.e. illuminate) the entire 3-D FOV of a CCD image detection array without using mechanical scanning mechanisms.

A method of fabricating a planar laser illumination and imaging module (PLIIM) comprising the steps of:

• mounting a pair of micro-sized cylindrical lens arrays upon a pair of linear arrays of surface emitting lasers (SELs) formed between a linear CCD image detection array on a common semiconductor substrate.

A planar laser illumination and imaging module (PLIIM) fabricated by forming a 2-D array of surface emitting lasers (SELs) about a 2-D area-type CCD image detection array on a common semiconductor substrate, with a field of view defining lens element mounted over the 2-D CCD image detection array and a 2-D array of cylindrical lens elements mounted over the 2-D array of SELs.

A bioptical PLIIM-based product identification, dimensioning and analysis (PIDA) system comprising a pair of PLIIM-based package identification systems arranged within a compact POS housing having bottom and side light transmission apertures, located beneath a pair of spatially-isolated imaging windows.

A bioptical PLIIM-based system for capturing and analyzing color images of products and produce items, and thus enabling, in supermarket environments, recognition of produce on the basis of color, dimensions and geometrical form.

A bioptical-type planar laser illumination and imaging (PLIIM) system for identifying products in retail environments by capturing images of said products and processing said images to recognized the identity of said products, and recognizing the shape, texture and/or color of articles of produce using one or more composite multi-spectral planar laser illumination beam (PLIBs) containing a spectrum of different characteristic wavelengths, to impart multi-color illumination characteristics thereto.

A bioptical-type PLIIM-based system, wherein a planar laser illumination array (PLIA) comprising a plurality of visible laser diodes (VLDs) which intrinsically exhibit high “mode-hopping” spectral characteristics which cooperate on the time domain to reduce the temporal coherence of the laser illumination sources operating in the PLIA, and thereby reduce the speckle-noise pattern observed at the image detection array of the PLIIM-based system.

A bioptical PLIIM-based product dimensioning, analysis and identification system comprising a pair of PLIIM-based object identification and attribute acquisition subsystems,

• wherein each PLIIM-based object identification and attribute acquisition subsystem produces a multi-spectral planar laser illumination beam (PLIB) for illuminating objects during imaging, and employs a 1-D CCD image detection array with image formation optics having a field of view (FOV) that is coplanar with said PLIB;
• and
• wherein said PLIIM-based object identification and attribute acquisition subsystem is programmed to analyze captured images of objects and determine the shape/geometry, dimensions and/or color thereof.

A bioptical PLIIM-based product dimensioning, analysis and identification system comprising a pair of PLIIM-based object identification and attribute acquisition subsystems,

• wherein each PLIIM-based object identification and attribute acquisition subsystem produces a multi-spectral planar laser illumination beam (PLIB) for illuminating objects during imaging, and employs a 2-D (area-type) CCD image detection array with image formation optics having a field of view (FOV), through which said PLIB is automatically swept in a coplanar relationship during illumination and imaging operations;
• and
• wherein said PLIIM-based object identification and attribute acquisition subsystem is programmed to analyze captured images of objects and determine the shape/geometry, dimensions and/or color thereof.

A bioptical PLIIM-based product dimensioning, analysis and identification system comprising a pair of PLIIM-based package identification and dimensioning subsystems, wherein each subsystem employs a 2-D CCD image detection array and is programmed to analyze captured images of objects and determine the shape/geometry, dimensions and/or color thereof.

A PLIIM-based image capture and processing engines with linear image detection array having vertically-elongated image detection elements and an integrated despeckling mechanism.

A hand-supportable imager having a housing containing a PLIIM-based image capture and processing engine comprising a dual-VLD PLIA, and a 2-D (area-type) image detection array configured within an optical assembly that employs a micro-oscillating cylindrical lens array which provides a despeckling mechanism that operates in accordance with the first generalized method of speckle-pattern noise reduction, and which also has integrated with its housing, a LCD display panel for displaying images captured by said engine and information provided by a host computer system or other information supplying device, and a manual data entry keypad for manually entering data into the imager during diverse types of information-related transactions supported by the PLIIM-based hand-supportable imager.

A hand-supportable imager having a housing containing a PLIIM-based image capture and processing engine comprising a dual-VLD PLIA and an area image detection array configured within an optical assembly which employs a micro-oscillating light reflective element that provides a despeckling mechanism that operates in accordance with the first generalized method of speckle-pattern noise reduction, and which also has integrated with its housing, a LCD display panel for displaying images captured by said engine and information provided by a host computer system or other information supplying device, and a manual data entry keypad for manually entering data into the imager during diverse types of information-related transactions supported by the PLIIM-based hand-supportable imager.

A hand-supportable imager having a housing containing a PLIIM-based image capture and processing engine comprising a dual-VLD PLIA and a 2-D image detection array configured within an optical assembly that employs an acousto-electric Bragg cell structure which provides a despeckling mechanism that operates in accordance with the first generalized method of speckle-pattern noise reduction, and which also has integrated with its housing, a LCD display panel for displaying images captured by said engine and information provided by a host computer system or other information supplying device, and a manual data entry keypad for manually entering data into the imager during diverse types of information-related transactions supported by the PLIIM-based hand-supportable imager.

A hand-supportable imager having a housing containing a PLIIM-based image capture and processing engine comprising a dual-VLD PLIA and a 2-D image detection array configured within an optical assembly that employs a high spatial-resolution piezo-electric driven deformable mirror (DM) structure which provides a despeckling mechanism that operates in accordance with the first generalized method of speckle-pattern noise reduction, and which also has integrated with its housing, a LCD display panel for displaying images captured by said engine and information provided by a host computer system or other information supplying device, and a manual data entry keypad for manually entering data into the imager during diverse types of information-related transactions supported by the PLIIM-based hand-supportable imager.

A hand-supportable imager having a housing containing a PLIIM-based image capture and processing engine comprising a dual-VLD PLIA and a 2-D image detection array configured within an optical assembly that employs a spatial-only liquid crystal display (PO-LCD) type spatial phase modulation panel which provides a despeckling mechanism that operates in accordance with the first generalized method of speckle-pattern noise reduction, and which also has integrated with its housing, a LCD display panel for displaying images captured by said engine and information provided by a host computer system or other information supplying device, and a manual data entry keypad for manually entering data into the imager during diverse types of information-related transactions supported by the PLIIM-based hand-supportable imager.

A hand-supportable imager having a housing containing a PLIIM-based image capture and processing engine comprising a dual-VLD PLIA and a 2-D image detection array configured within an optical assembly that employs a visible mode locked laser diode (MLLD) which provides a despeckling mechanism that operates in accordance with the second generalized method of speckle-pattern noise reduction, and which also has integrated with its housing, a LCD display panel for displaying images captured by said engine and information provided by a host computer system or other information supplying device, and a manual data entry keypad for manually entering data into the imager during diverse types of information-related transactions supported by the PLIIM-based hand-supportable imager.

A hand-supportable imager having a housing containing a PLIIM-based image capture and processing engine comprising a dual-VLD PLIA and a 2-D image detection array configured within an optical assembly that employs an electrically-passive optically-reflective cavity (i.e. etalon) which provides a despeckling mechanism that operates in accordance with the third method generalized method of speckle-pattern noise reduction, and which also has integrated with its housing, a LCD display panel for displaying images captured by said engine and information provided by a host computer system or other information supplying device, and a manual data entry keypad for manually entering data into the imager during diverse types of information-related transactions supported by the PLIIM-based hand-supportable imager.

A hand-supportable imager having a housing containing a PLIIM-based image capture and processing engine comprising a dual-VLD PLIA and a 2-D image detection array configured within an optical assembly that employs a pair of micro-oscillating spatial intensity modulation panels which provide a despeckling mechanism that operates in accordance with the fifth method generalized method of speckle-pattern noise reduction, and which also has integrated with its housing, a LCD display panel for displaying images captured by said engine and information provided by a host computer system or other information supplying device, and a manual data entry keypad for manually entering data into the imager during diverse types of information-related transactions supported by the PLIIM-based hand-supportable imager.

A hand-supportable imager having a housing containing a PLIIM-based image capture and processing engine comprising a dual-VLD PLIA and a 2-D image detection array configured within an optical assembly that employs a electro-optical or mechanically rotating aperture (i.e. iris) disposed before the entrance pupil of the IFD module, which provides a despeckling mechanism that operates in accordance with the sixth method generalized method of speckle-pattern noise reduction, and which also has integrated with its housing, a LCD display panel for displaying images captured by said engine and information provided by a host computer system or other information supplying device, and a manual data entry keypad for manually entering data into the imager during diverse types of information-related transactions supported by the PLIIM-based hand-supportable imager.

A hand-supportable imager having a housing containing a PLIIM-based image capture and processing engine comprising a dual-VLD PLIA and a 2-D image detection array configured within an optical assembly that employs a high-speed electro-optical shutter disposed before the entrance pupil of the IFD module, which provides a despeckling mechanism that operates in accordance with the seventh generalized method of speckle-pattern noise reduction, and which also has integrated with its housing, a LCD display panel for displaying images captured by said engine and information provided by a host computer system or other information supplying device, and a manual data entry keypad for manually entering data into the imager during diverse types of information-related transactions supported by the PLIIM-based hand-supportable imager.

An automatically-activated PLIIM-based hand-supportable linear imager comprising:

• (i) a linear-type image formation and detection (IFD) module having a variable focal length/variable focal distance image formation optics with a field of view (FOV);
• (ii) an automatic bar code symbol detection subsystem within its hand-supportable housing for automatically activating the planar laser illumination array (to produce a PLIB in coplanar arrangement with said FOV) the linear-type image formation and detection (IFD) module, the image frame grabber, the image data buffer, the image processing computer for decode-processing in response to the automatic detection of an bar code symbol within its bar code symbol detection field enabled by the image sensor within the IFD module;
• (iii) a manually-activatable switch for enabling transmission of symbol character data to a host computer system in response to decoding a bar code symbol within a captured image frame, and (iv) a LCD display panel and a data entry keypad for supporting diverse types of transactions using the PLIIM-based hand-supportable imager.

A PLIIM-based linear imager, wherein speckle-pattern noise is reduced by employing optically-combined planar laser illumination beams (PLIB) components produced from a multiplicity of spatially-incoherent laser diode sources.

A PLIIM-based hand-supportable linear imager, wherein a multiplicity of spatially-incoherent laser diode sources are optically combined using a cylindrical lens array and projected onto an object being illuminated, so as to achieve a greater the reduction in RMS power of observed speckle-pattern noise within the PLIIM-based linear imager.

A hand-supportable PLIIM-based linear imager, wherein a pair of planar laser illumination arrays (PLIAs) are mounted within its hand-supportable housing and arranged on opposite sides of a linear image detection array mounted therein having a field of view (FOV), and wherein each PLIA comprises a plurality of planar laser illumination modules (PLIMs), for producing a plurality of spatially-incoherent planar laser illumination beam (PLIB) components.

A hand-supportable PLIIM-based linear imager, wherein each spatially-incoherent PLIB component is arranged in a coplanar relationship with a portion of the FOV of the linear image detection array, and an optical element (e.g. cylindrical lens array) is mounted within the hand-supportable housing, for optically combining and projecting the plurality of spatially-incoherent PLIB components through its light transmission window in coplanar relationship with the FOV, and onto the same points on the surface of an object to be illuminated.

A hand-supportable PLIIM-based linear imager, wherein by virtue of such operations, the linear image detection array detects time-varying speckle-noise patterns produced by the spatially-incoherent PLIB components reflected/scattered off the illuminated object, and the time-varying speckle-noise patterns are time-averaged at the linear image detection array during the photo-integration time period thereof so as to reduce the RMS power of speckle-pattern noise observable at the linear image detection array.

A PLIIM which embodies an optical technique that effectively destroys the spatial and/or temporal coherence of the laser illumination sources that are used to generate planar laser illumination beams (PLIBs) within PLIIM-based systems.

A PLIIM, wherein the spatial coherence of the illumination sources is destroyed by creating multiple “virtual” illumination sources that illuminate the object at different angles, over the photo-integration time period of the electronic image detection array used in the IFD module.

A PLIIM which embodies an optical technique that effectively reduces speckle-noise pattern at an image detection array by destroying the spatial and/or temporal coherence of the laser illumination sources are used to generate planar laser illumination beams (PLIBs) within the PLIIM-based system.

A PLIIM, wherein the spatial coherence of the illumination sources is destroyed by creating multiple “virtual” illumination sources that illuminate the object at different points in space, over the photo-integration time period of the electronic image detection array used in the system.

A planar laser illumination and imaging (PLIIM) system which employs high-resolution wavefront control methods and devices to reduce the power of speckle-noise patterns within digital images acquired by the system.

A PLIIM-based system, in which planar laser illumination beams (PLIBs) rich in spectral-harmonic components on the time-frequency domain are optically generated using principles based on wavefront spatio-temporal dynamics.

A PLIIM-based system, in which planar laser illumination beams (PLIBs) rich in spectral-harmonic components on the time-frequency domain are optically generated using principles based on wavefront non-linear dynamics.

A PLIIM-based system, in which planar laser illumination beams (PLIBs) rich in spectral-harmonic components on the spatial-frequency domain are optically generated using principles based on wavefront spatio-temporal dynamics.

A PLIIM-based system, in which planar laser illumination beams (PLIBs) rich in spectral-harmonic components on the spatial-frequency domain are optically generated using principles based on wavefront non-linear dynamics.

A PLIIM-based system, in which planar laser illumination beams (PLIBs) rich in spectral-harmonic components are optically generated using diverse electro-optical devices selected from the group consisting of micro-electro-mechanical devices (MEMs) (e.g. deformable micro-mirrors), optically-addressed liquid crystal (LC) light valves, liquid crystal (LC) phase modulators, micro-oscillating reflectors (e.g. mirrors or spectrally-tuned polarizing reflective CLC film material), micro-oscillating refractive-type phase modulators, micro-oscillating diffractive-type micro-oscillators, as well as rotating phase modulation discs, bands, rings and the like.

A planar laser illumination and imaging (PLIIM) system and method which employs a planar laser illumination array (PLIA) and electronic image detection array which cooperate to effectively reduce the speckle-noise pattern observed at the image detection array of the PLIIM system by reducing or destroying either (i) the spatial and/or temporal coherence of the planar laser illumination beams (PLIBs) produced by the PLIAs within the PLIIM system, or (ii) the spatial and/or temporal coherence of the planar laser illumination beams (PLIBs) that are reflected/scattered off the target and received by the image formation and detection (IFD) subsystem within the PLIIM system.

A planar laser illumination and imaging (PLIIM) system comprising:

• a planar laser illumination array (PLIA) and electronic image detection array which cooperate to effectively reduce the speckle-noise pattern observed at the image detection array of the PLIIM system by reducing or destroying either (i) the spatial and/or temporal coherence of the planar laser illumination beams (PLIBs) produced by the PLIAs within the PLIIM system, or (ii) the spatial and/or temporal coherence of the planar laser illumination beams (PLIBs) that are reflected/scattered off the target and received by the image formation and detection (IFD) subsystem within the PLIIM system.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein the method is based on temporal intensity modulating the composite-type return PLIB produced by the composite PLIB illuminating and reflecting and scattering off an object so that the return composite PLIB detected by the image detection array in the IFD subsystem constitutes a temporally coherent-reduced laser beam and, as a result, numerous time-varying (random) speckle-noise patterns are detected over the photo-integration time period of the image detection array, thereby allowing these time-varying speckle-noise patterns to be temporally and spatially averaged and the RMS power of observed speckle-noise patterns reduced.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein (i) the returned laser beam produced by the transmitted PLIB illuminating and reflecting/scattering off an object is temporal-intensity modulated according to a temporal intensity modulation (e.g. windowing) function (TIMF) so as to modulate the phase along the wavefront of the composite PLIB and produce numerous substantially different time-varying speckle-noise patterns at image detection array of the IFD Subsystem, and (ii) temporally and spatially averaging the numerous time-varying speckle-noise patterns at the image detection array during the photo-integration time period thereof, thereby reducing the RMS power of the speckle-noise patterns observed at the image detection array.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein temporal intensity modulation techniques which can be used to carry out the method include, for example:

• high-speed electro-optical (e.g. ferro-electric, LCD, etc.) shutters located before the image detector along the optical axis of the camera subsystem;
• and any other temporal intensity modulation element arranged before the image detector along the optical axis of the camera subsystem, and through which the received PLIB beam may pass during illumination and image detection operations.

A method of and apparatus for speckle-noise pattern reduction based on the principle of spatially phase modulating the transmitted planar laser illumination beam (PLIB) prior to illuminating a target object (e.g. package) therewith so that the object is illuminated with a spatially coherent-reduced planar laser beam and, as a result, numerous substantially different time-varying speckle-noise patterns are produced and detected over the photo-integration time period of the image detection array (in the IFD subsystem), thereby allowing these speckle-noise patterns to be temporally averaged and possibly spatially averaged over the photo-integration time period and the RMS power of observable speckle-noise pattern reduced.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein the method involves modulating the spatial phase of the composite-type “transmitted” planar laser illumination beam (PLIB) prior to illuminating an object (e.g. package) therewith so that the object is illuminated with a spatially coherent-reduced laser beam and, as a result, numerous time-varying (random) speckle-noise patterns are produced and detected over the photo-integration time period of the image detection array in the IFD subsystem, thereby allowing these speckle-noise patterns to be temporally averaged and/or spatially averaged and the observable speckle-noise pattern reduced.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein (i) the spatial phase of the transmitted PLIB is modulated along the planar extent thereof according to a spatial phase modulation function (SPMF) so as to modulate the phase along the wavefront of the PLIB and produce numerous substantially different time-varying speckle-noise patterns to occur at the image detection array of the IFD Subsystem during the photo-integration time period of the image detection array thereof, and also (ii) the numerous time-varying speckle-noise patterns produced at the image detection array are temporally and/or spatially averaged during the photo-integration time period thereof, thereby reducing the speckle-noise patterns observed at the image detection array.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein the transmitted planar laser illumination beam (PLIB) is spatially phase modulated along the planar extent thereof according to a (random or periodic) spatial phase modulation function (SPMF) prior to illumination of the target object with the PLIB, so as to modulate the phase along the wavefront of the PLIB and produce numerous substantially different time-varying speckle-noise pattern at the image detection array, and temporally and spatially average these speckle-noise patterns at the image detection array during the photo-integration time period thereof to reduce the RMS power of observable speckle-pattern noise.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein a pair of refractive cylindrical lens arrays are micro-oscillated relative to each other in order to spatial phase modulate the planar laser illumination beam prior to target object illumination.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein a pair of light diffractive (e.g. holographic) cylindrical lens arrays are micro-oscillated relative to each other in order to spatial phase modulate the planar laser illumination beam prior to target object illumination.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein a pair of reflective elements are micro-oscillated relative to a stationary refractive cylindrical lens array in order to spatial phase modulate a planar laser illumination beam prior to target object illumination.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein the planar laser illumination (PLIB) is micro-oscillated using an acoustic-optic modulator in order to spatial phase modulate the PLIB prior to target object illumination.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein the planar laser illumination (PLIB) is micro-oscillated using a piezo-electric driven deformable mirror structure in order to spatial phase modulate said PLIB prior to target object illumination.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein the planar laser illumination (PLIB) is micro-oscillated using a refractive-type phase-modulation disc in order to spatial phase modulate said PLIB prior to target object illumination.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein the planar laser illumination (PLIB) is micro-oscillated using a phase-only type LCD-based phase modulation panel in order to spatial phase modulate said PLIB prior to target object illumination.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein the planar laser illumination (PLIB) is micro-oscillated using a refractive-type cylindrical lens array ring structure in order to spatial phase modulate said PLIB prior to target object illumination.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein the planar laser illumination (PLIB) is micro-oscillated using a diffractive-type cylindrical lens array ring structure in order to spatial intensity modulate said PLIB prior to target object illumination.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein the planar laser illumination (PLIB) is micro-oscillated using a reflective-type phase modulation disc structure in order to spatial phase modulate said PLIB prior to target object illumination.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein a planar laser illumination (PLIB) is micro-oscillated using a rotating polygon lens structure which spatial phase modulates said PLIB prior to target object illumination.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, based on reducing the temporal coherence of the planar laser illumination beam before it illuminates the target object by applying temporal intensity modulation techniques during the transmission of the PLIB towards the target.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, based on the principle of temporal intensity modulating the transmitted planar laser illumination beam (PLIB) prior to illuminating a target object (e.g. package) therewith so that the object is illuminated with a spatially coherent-reduced planar laser beam and, as a result, numerous substantially different time-varying speckle-noise patterns are produced and detected over the photo-integration time period of the image detection array (in the IFD subsystem), thereby allowing these speckle-noise patterns to be temporally averaged and possibly spatially averaged over the photo-integration time period and the RMS power of observable speckle-noise pattern reduced.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein the method involves modulating the temporal intensity of the composite-type “transmitted” planar laser illumination beam (PLIB) prior to illuminating an object (e.g. package) therewith so that the object is illuminated with a temporally coherent-reduced laser beam and, as a result, numerous time-varying (random) speckle-noise patterns are produced and detected over the photo-integration time period of the image detection array in the IFD subsystem, thereby allowing these speckle-noise patterns to be temporally averaged and/or spatially averaged and the observable speckle-noise pattern reduced.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein the transmitted planar laser illumination beam (PLIB) is temporal intensity modulated prior to illuminating a target object (e.g. package) therewith so that the object is illuminated with a temporally coherent-reduced planar laser beam and, as a result, numerous substantially different time-varying speckle-noise patterns are produced and detected over the photo-integration time period of the image detection array (in the IFD subsystem), thereby allowing these speckle-noise patterns to be temporally averaged and/or spatially averaged and the observable speckle-noise patterns reduced.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, based on temporal intensity modulating the transmitted PLIB prior to illuminating an object therewith so that the object is illuminated with a temporally coherent-reduced laser beam and, as a result, numerous time-varying (random) speckle-noise patterns are produced at the image detection array in the IFD subsystem over the photo-integration time period thereof, and the numerous time-varying speckle-noise patterns are temporally and/or spatially averaged during the photo-integration time period, thereby reducing the RMS power of speckle-noise pattern observed at the image detection array.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein (i) the transmitted PLIB is temporal-intensity modulated according to a temporal intensity modulation (e.g. windowing) function (TIMF) causing the phase along the wavefront of the transmitted PLIB to be modulated and numerous substantially different time-varying speckle-noise patterns produced at image detection array of the IFD Subsystem, and (ii) the numerous time-varying speckle-noise patterns produced at the image detection array are temporally and/or spatially averaged during the photo-integration time period thereof, thereby reducing the RMS power of RMS speckle-noise patterns observed (i.e. detected) at the image detection array.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein temporal intensity modulation techniques which can be used to carry out the method include, for example:

• visible mode-locked laser diodes (MLLDs) employed in the planar laser illumination array;
• electro-optical temporal intensity modulation panels (i.e. shutters) disposed along the optical path of the transmitted PLIB;
• and other temporal intensity modulation devices.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein the planar laser illumination beam is temporal intensity modulated prior to target object illumination employing high-speed beam gating/shutter principles.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein the planar laser illumination beam is temporal intensity modulated prior to target object illumination employing visible mode-locked laser diodes (MLLDs).

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein the planar laser illumination beam is temporal intensity modulated prior to target object illumination employing current-modulated visible laser diodes (VLDs) operated in accordance with temporal intensity modulation functions (TIMFS) which exhibit a spectral harmonic constitution that results in a substantial reduction in the RMS power of speckle-pattern noise observed at the image detection array of PLIIM-based systems.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, based on reducing the temporal-coherence of the planar laser illumination beam before it illuminates the target object by applying temporal phase modulation techniques during the transmission of the PLIB towards the target.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, based on the principle of temporal phase modulating the transmitted planar laser illumination beam (PLIB) prior to illuminating a target object (e.g. package) therewith so that the object is illuminated with a temporal coherent-reduced planar laser beam and, as a result, numerous substantially different time-varying speckle-noise patterns are produced and detected over the photo-integration time period of the image detection array (in the IFD subsystem), thereby allowing these speckle-noise patterns to be temporally averaged and possibly spatially averaged over the photo-integration time period and the RMS power of observable speckle-noise pattern reduced.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein the method involves modulating the temporal phase of the composite-type “transmitted” planar laser illumination beam (PLIB) prior to illuminating an object (e.g. package) therewith so that the object is illuminated with a temporal coherent-reduced laser beam and, as a result, numerous time-varying (random) speckle-noise patterns are produced and detected over the photo-integration time period of the image detection array in the IFD subsystem, thereby allowing these speckle-noise patterns to be temporally averaged and/or spatially averaged and the observable speckle-noise pattern reduced.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein temporal phase modulation techniques which can be used to carry out the third generalized method include, for example:

• an optically-reflective cavity (i.e. etalon device) affixed to external portion of each VLD;
• a phase-only LCD temporal intensity modulation panel;
• and fiber optical arrays.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein the planar laser illumination beam is temporal phase modulated prior to target object illumination employing photon trapping, delaying and releasing principles within an optically reflective cavity (i.e. etalon) externally affixed to each visible laser diode within the planar laser illumination array.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein the planar laser illumination (PLIB) is temporal phase modulated using a phase-only type LCD-based phase modulation panel prior to target object illumination.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein the planar laser illumination beam (PLIB) is temporal phase modulated using a high-density fiber-optic array prior to target object illumination.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, based on reducing the temporal coherence of the planar laser illumination beam before it illuminates the target object by applying temporal frequency modulation techniques during the transmission of the PLIB towards the target.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, based on the principle of temporal frequency modulating the transmitted planar laser illumination beam (PLIB) prior to illuminating a target object (e.g. package) therewith so that the object is illuminated with a spatially coherent-reduced planar laser beam and, as a result, numerous substantially different time-varying speckle-noise patterns are produced and detected over the photo-integration time period of the image detection array (in the IFD subsystem), thereby allowing these speckle-noise patterns to be temporally averaged and possibly spatially averaged over the photo-integration time period and the RMS power of observable speckle-noise pattern reduced.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein the method involves modulating the temporal frequency of the composite-type “transmitted” planar laser illumination beam (PLIB) prior to illuminating an object (e.g. package) therewith so that the object is illuminated with a temporally coherent-reduced laser beam and, as a result, numerous time-varying (random) speckle-noise patterns are produced and detected over the photo-integration time period of the image detection array in the IFD subsystem, thereby allowing these speckle-noise patterns to be temporally averaged and/or spatially averaged and the observable speckle-noise pattern reduced.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein techniques which can be used to carry out the third generalized method include, for example:

• junction-current control techniques for periodically inducing VLDs into a mode of frequency hopping, using thermal feedback;
• and multi-mode visible laser diodes (VLDs) operated just above their lasing threshold.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein the planar laser illumination beam is temporal frequency modulated prior to target object illumination employing drive-current modulated visible laser diodes (VLDs) into modes of frequency hopping and the like.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein the planar laser illumination beam is temporal frequency modulated prior to target object illumination employing multi-mode visible laser diodes (VLDs) operated just above their lasing threshold.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein the spatial intensity modulation techniques that can be used to carry out the method include, for example:

• mechanisms for moving the relative position/motion of a spatial intensity modulation array (e.g. screen) relative to a cylindrical lens array and/or a laser diode array, including reciprocating a pair of rectilinear spatial intensity modulation arrays relative to each other, as well as rotating a spatial intensity modulation array ring structure about each PLIM employed in the PLIIM-based system;
• a rotating spatial intensity modulation disc;
• and other spatial intensity modulation devices.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, based on reducing the spatial-coherence of the planar laser illumination beam before it illuminates the target object by applying spatial intensity modulation techniques during the transmission of the PLIB towards the target.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein the wavefront of the transmitted planar laser illumination beam (PLIB) is spatially intensity modulated prior to illuminating a target object (e.g. package) therewith so that the object is illuminated with a spatially coherent-reduced planar laser beam and, as a result, numerous substantially different time-varying speckle-noise patterns are produced and detected over the photo-integration time period of the image detection array (in the IFD subsystem), thereby allowing these speckle-noise patterns to be temporally averaged and possibly spatially averaged over the photo-integration time period and the RMS power of observable speckle-noise pattern reduced.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein a pair of spatial intensity modulation (SIM) panels are micro-oscillated with respect to the cylindrical lens array so as to spatial-intensity modulate the planar laser illumination beam (PLIB) prior to target object illumination.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, based on reducing the spatial-coherence of the planar laser illumination beam after it illuminates the target by applying spatial intensity modulation techniques during the detection of the reflected/scattered PLIB.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein the method is based on spatial intensity modulating the composite-type “return” PLIB produced by the composite PLIB illuminating and reflecting and scattering off an object so that the return PLIB detected by the image detection array (in the IFD subsystem) constitutes a spatially coherent-reduced laser beam and, as a result, numerous time-varying speckle-noise patterns are detected over the photo-integration time period of the image detection array (in the IFD subsystem), thereby allowing these time-varying speckle-noise patterns to be temporally and spatially-averaged and the RMS power of the observed speckle-noise patterns reduced.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein (i) the return PLIB produced by the transmitted PLIB illuminating and reflecting/scattering off an object is spatial-intensity modulated (along the dimensions of the image detection elements) according to a spatial-intensity modulation function (SIMF) so as to modulate the phase along the wavefront of the composite return PLIB and produce numerous substantially different time-varying speckle-noise patterns at the image detection array in the IFD Subsystem, and also (ii) temporally and spatially average the numerous time-varying speckle-noise patterns produced at the image detection array during the photo-integration time period thereof, thereby reducing the RMS power of the speckle-noise patterns observed at the image detection array.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein the composite-type “return” PLIB (produced when the transmitted PLIB illuminates and reflects and/or scatters off the target object) is spatial intensity modulated, constituting a spatially coherent-reduced laser light beam and, as a result, numerous time-varying speckle-noise patterns are detected over the photo-integration time period of the image detection array in the IFD subsystem, thereby allowing these time-varying speckle-noise patterns to be temporally and/or spatially averaged and the observable speckle-noise pattern reduced.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein the return planar laser illumination beam is spatial-intensity modulated prior to detection at the image detector.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein spatial intensity modulation techniques which can be used to carry out the sixth generalized method include, for example:

• high-speed electro-optical (e.g. ferro-electric, LCD, etc.) dynamic spatial filters, located before the image detector along the optical axis of the camera subsystem;
• physically rotating spatial filters, and any other spatial intensity modulation element arranged before the image detector along the optical axis of the camera subsystem, through which the received PLIB beam may pass during illumination and image detection operations for spatial intensity modulation without causing optical image distortion at the image detection array.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein spatial intensity modulation techniques which can be used to carry out the method include, for example:

• a mechanism for physically or photo-electronically rotating a spatial intensity modulator (e.g. apertures, irises, etc.) about the optical axis of the imaging lens of the camera module;
• and any other axially symmetric, rotating spatial intensity modulation element arranged before the entrance pupil of the camera module, through which the received PLIB beam may enter at any angle or orientation during illumination and image detection operations.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, based on reducing the temporal coherence of the planar laser illumination beam after it illuminates the target by applying temporal intensity modulation techniques during the detection of the reflected/scattered PLIB.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein the composite-type “return” PLIB (produced when the transmitted PLIB illuminates and reflects and/or scatters off the target object) is temporal intensity modulated, constituting a temporally coherent-reduced laser beam and, as a result, numerous time-varying (random) speckle-noise patterns are detected over the photo-integration time period of the image detection array (in the IFD subsystem), thereby allowing these time-varying speckle-noise patterns to be temporally and/or spatially averaged and the observable speckle-noise pattern reduced. This method can be practiced with any of the PLIM-based systems of the present invention disclosed herein, as well as any system constructed in accordance with the general principles of the present invention.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein temporal intensity modulation techniques which can be used to carry out the method include, for example:

• high-speed temporal modulators such as electro-optical shutters, pupils, and stops, located along the optical path of the composite return PLIB focused by the IFD subsystem;
• etc.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein the return planar laser illumination beam is temporal intensity modulated prior to image detection by employing high-speed light gating/switching principles.

A planar laser illumination and imaging module which employs a planar laser illumination array (PLIA) comprising a plurality of visible laser diodes having a plurality of different characteristic wavelengths residing within different portions of the visible band.

A planar laser illumination and imaging module (PLIIM), wherein the visible laser diodes within the PLIA thereof are spatially arranged so that the spectral components of each neighboring visible laser diode (VLD) spatially overlap and each portion of the composite PLIB along its planar extent contains a spectrum of different characteristic wavelengths, thereby imparting multi-color illumination characteristics to the composite PLIB.

A PLIIM, wherein the multi-color illumination characteristics of the composite PLIB reduce the temporal coherence of the laser illumination sources in the PLIA, thereby reducing the RMS power of the speckle-noise pattern observed at the image detection array of the PLIIM.

A planar laser illumination and imaging module (PLIIM) which employs a planar laser illumination array (PLIA) comprising a plurality of visible laser diodes (VLDs) which exhibit high “mode-hopping” spectral characteristics which cooperate on the time domain to reduce the temporal coherence of the laser illumination sources operating in the PLIA and produce numerous substantially different time-varying speckle-noise patterns during each photo-integration time period, thereby reducing the RMS power of the speckle-noise pattern observed at the image detection array in the PLIIM.

A planar laser illumination and imaging module (PLIIM) which employs a planar laser illumination array (PLIA) comprising a plurality of visible laser diodes (VLDs) which are “thermally-driven” to exhibit high “mode-hopping” spectral characteristics which cooperate on the time domain to reduce the temporal coherence of the laser illumination sources operating in the PLIA, and thereby reduce the speckle noise pattern observed at the image detection array in the PLIIM accordance with the principles of the present invention.

A first generalized method of speckle-noise pattern reduction and particular forms of apparatus therefor based on reducing the spatial-coherence of the planar laser illumination beam before it illuminates the target object by applying spatial phase modulation techniques during the transmission of the PLIB towards the target.

Another object of the present invention is to provide such a method and apparatus, based on the principle of spatially phase modulating a transmitted planar laser illumination beam (PLIB) prior to illuminating a target object (e.g. package) therewith so that the object is illuminated with a spatially coherent-reduced planar laser beam and, as a result, numerous substantially different time-varying speckle-noise patterns are produced and detected over the photo-integration time period of the image detection array (in the IFD subsystem), thereby allowing these speckle-noise patterns to be temporally averaged and possibly spatially averaged over the photo-integration time period and the RMS power of observable speckle-noise pattern reduced.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein the method involves modulating the spatial phase of a composite-type “transmitted” planar laser illumination beam (PLIB) prior to illuminating an object (e.g. package) therewith so that the object is illuminated with a spatially coherent-reduced laser beam and, as a result, numerous time-varying (random) speckle-noise patterns are produced and detected over the photo-integration time period of the image detection array in the IFD subsystem, thereby allowing these speckle-noise patterns to be temporally averaged and/or spatially averaged and the observable speckle-noise pattern reduced.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein (i) the spatial phase of a transmitted PLIB is modulated along the planar extent thereof according to a spatial phase modulation function (SPMF) so as to modulate the phase along the wavefront of the PLIB and produce numerous substantially different time-varying speckle-noise patterns to occur at the image detection array of the IFD Subsystem during the photo-integration time period of the image detection array thereof, and also (ii) the numerous time-varying speckle-noise patterns produced at the image detection array are temporally and/or spatially averaged during the photo-integration time period thereof, thereby reducing the speckle-noise patterns observed at the image detection array.

A method and apparatus, wherein the transmitted planar laser illumination beam (PLIB) is spatially phase modulated along the planar extent thereof according to a (random or periodic) spatial phase modulation function (SPMF) prior to illumination of the target object with the PLIB, so as to modulate the phase along the wavefront of the PLIB and produce numerous substantially different time-varying speckle-noise pattern at the image detection array, and temporally and spatially average these speckle-noise patterns at the image detection array during the photo-integration time period thereof to reduce the RMS power of observable speckle-pattern noise.

A method and apparatus, wherein a pair of refractive cylindrical lens arrays are micro-oscillated relative to each other in order to spatial phase modulate the planar laser illumination beam prior to target object illumination.

A method and apparatus, wherein a pair of light diffractive (e.g. holographic) cylindrical lens arrays are micro-oscillated relative to each other in order to spatial phase modulate the planar laser illumination beam prior to target object illumination.

A method and apparatus, wherein a pair of reflective elements are micro-oscillated relative to a stationary refractive cylindrical lens array in order to spatial phase modulate a planar laser illumination beam prior to target object illumination.

A method and apparatus, wherein a planar laser illumination beam (PLIB) is micro-oscillated using an acoustic-optic modulator in order to spatial phase modulate the PLIB prior to target object illumination.

A method and apparatus, wherein a planar laser illumination beam (PLIB) is micro-oscillated using a piezo-electric driven deformable mirror structure in order to spatial phase modulate said PLIB prior to target object illumination.

A method and apparatus, wherein a planar laser illumination beam (PLIB) is micro-oscillated using a refractive-type phase-modulation disc in order to spatial phase modulate said PLIB prior to target object illumination.

A method and apparatus, wherein a planar laser illumination beam (PLIB) is micro-oscillated using a phase-only type LCD-based phase modulation panel in order to spatial phase modulate said PLIB prior to target object illumination.

A method and apparatus, wherein a planar laser illumination beam (PLIB) is micro-oscillated using a refractive-type cylindrical lens array ring structure in order to spatial phase modulate said PLIB prior to target object illumination

A method and apparatus, wherein a planar laser illumination beam (PLIB) is micro-oscillated using a diffractive-type cylindrical lens array ring structure in order to spatial intensity modulate said PLIB prior to target object illumination.

A method and apparatus, wherein a planar laser illumination beam (PLIB) is micro-oscillated using a reflective-type phase modulation disc structure in order to spatial phase modulate said PLIB prior to target object illumination.

A method and apparatus, wherein a planar laser illumination beam (PLIB) is micro-oscillated using a rotating polygon lens structure which spatial phase modulates said PLIB prior to target object illumination.

A second generalized method of speckle-noise pattern reduction and particular forms of apparatus therefor based on reducing the temporal coherence of a planar laser illumination beam (PLIB) before it illuminates the target object by applying temporal intensity modulation techniques during the transmission of the PLIB towards the target.

A method and apparatus, based on the principle of temporal intensity modulating a transmitted planar laser illumination beam (PLIB) prior to illuminating a target object (e.g. package) therewith so that the object is illuminated with a spatially coherent-reduced planar laser beam and, as a result, numerous substantially different time-varying speckle-noise patterns are produced and detected over the photo-integration time period of the image detection array (in the IFD subsystem), thereby allowing these speckle-noise patterns to be temporally averaged and possibly spatially averaged over the photo-integration time period and the RMS power of observable speckle-noise pattern reduced.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein the method involves modulating the temporal intensity of a composite-type “transmitted” planar laser illumination beam (PLIB) prior to illuminating an object (e.g. package) therewith so that the object is illuminated with a temporally coherent-reduced laser beam and, as a result, numerous time-varying (random) speckle-noise patterns are produced and detected over the photo-integration time period of the image detection array in the IFD subsystem, thereby allowing these speckle-noise patterns to be temporally averaged and/or spatially averaged and the observable speckle-noise pattern reduced.

A method and apparatus, wherein a transmitted planar laser illumination beam (PLIB) is temporal intensity modulated prior to illuminating a target object (e.g. package) therewith so that the object is illuminated with a temporally coherent-reduced planar laser beam and, as a result, numerous substantially different time-varying speckle-noise patterns are produced and detected over the photo-integration time period of the image detection array (in the IFD subsystem), thereby allowing these speckle-noise patterns to be temporally averaged and/or spatially averaged and the observable speckle-noise patterns reduced.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, based on temporal intensity modulating the transmitted PLIB prior to illuminating an object therewith so that the object is illuminated with a temporally coherent-reduced laser beam and, as a result, numerous time-varying (random) speckle-noise patterns are produced at the image detection array in the IFD subsystem over the photo-integration time period thereof, and the numerous time-varying speckle-noise patterns are temporally and/or spatially averaged during the photo-integration time period, thereby reducing the RMS power of speckle-noise pattern observed at the image detection array.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein (i) the transmitted PLIB is temporal-intensity modulated according to a temporal intensity modulation (e.g. windowing) function (TIMF) causing the phase along the wavefront of the transmitted PLIB to be modulated and numerous substantially different time-varying speckle-noise patterns produced at image detection array of the IFD Subsystem, and (ii) the numerous time-varying speckle-noise patterns produced at the image detection array are temporally and/or spatially averaged during the photo-integration time period thereof, thereby reducing the RMS power of RMS speckle-noise patterns observed (i.e. detected) at the image detection array.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein temporal intensity modulation techniques which can be used to carry out the method include, for example:

• visible mode-locked laser diodes (MLLDs) employed in the planar laser illumination array;
• electro-optical temporal intensity modulation panels (i.e. shutters) disposed along the optical path of the transmitted PLIB;
• and other temporal intensity modulation devices.

A method and apparatus, wherein a planar laser illumination beam (PLIB) is temporal intensity modulated prior to target object illumination employing high-speed beam gating/shutter principles.

A method and apparatus, wherein a planar laser illumination beam (PLIB) is temporal intensity modulated prior to target object illumination employing current-modulated visible laser diodes (VLDs) operated in accordance with temporal intensity modulation functions (TIMFS) which exhibit a spectral harmonic constitution that results in a substantial reduction in the RMS power of speckle-pattern noise observed at the image detection array of PLIIM-based systems.

A third generalized method of speckle-noise pattern reduction and particular forms of apparatus therefor based on reducing the temporal-coherence of the planar laser illumination beam before it illuminates the target object by applying temporal phase modulation techniques during the transmission of the PLIB towards the target.

A method and apparatus, based on the principle of temporal phase modulating the transmitted planar laser illumination beam (PLIB) prior to illuminating a target object (e.g. package) therewith so that the object is illuminated with a temporal coherent-reduced planar laser beam and, as a result, numerous substantially different time-varying speckle-noise patterns are produced and detected over the photo-integration time period of the image detection array (in the IFD subsystem), thereby allowing these speckle-noise patterns to be temporally averaged and possibly spatially averaged over the photo-integration time period and the RMS power of observable speckle-noise pattern reduced.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein the method involves modulating the temporal phase of a composite-type “transmitted” planar laser illumination beam (PLIB) prior to illuminating an object (e.g. package) therewith so that the object is illuminated with a temporal coherent-reduced laser beam and, as a result, numerous time-varying (random) speckle-noise patterns are produced and detected over the photo-integration time period of the image detection array in the IFD subsystem, thereby allowing these speckle-noise patterns to be temporally averaged and/or spatially averaged and the observable speckle-noise pattern reduced.

A method and apparatus, wherein a planar laser illumination beam (PLIB) is temporal phase modulated prior to target object illumination employing photon trapping, delaying and releasing principles within an optically reflective cavity (i.e. etalon) externally affixed to each visible laser diode within the planar laser illumination array.

A method and apparatus, wherein a planar laser illumination beam (PLIB) is temporal phase modulated using a phase-only type LCD-based phase modulation panel prior to target object illumination

A method and apparatus, wherein the planar laser illumination beam (PLIB) is temporal phase modulated using a high-density fiber-optic array prior to target object illumination.

A fourth generalized method of speckle-noise pattern reduction and particular forms of apparatus therefor based on reducing the temporal coherence of a planar laser illumination beam (PLIB) before it illuminates the target object by applying temporal frequency modulation techniques during the transmission of the PLIB towards the target.

A method and apparatus, based on the principle of temporal frequency modulating a transmitted planar laser illumination beam (PLIB) prior to illuminating a target object (e.g. package) therewith so that the object is illuminated with a spatially coherent-reduced planar laser beam and, as a result, numerous substantially different time-varying speckle-noise patterns are produced and detected over the photo-integration time period of the image detection array (in the IFD subsystem), thereby allowing these speckle-noise patterns to be temporally averaged and possibly spatially averaged over the photo-integration time period and the RMS power of observable speckle-noise pattern reduced.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein the method involves modulating the temporal frequency of a composite-type “transmitted” planar laser illumination beam (PLIB) prior to illuminating an object (e.g. package) therewith so that the object is illuminated with a temporally coherent-reduced laser beam and, as a result, numerous time-varying (random) speckle-noise patterns are produced and detected over the photo-integration time period of the image detection array in the IFD subsystem, thereby allowing these speckle-noise patterns to be temporally averaged and/or spatially averaged and the observable speckle-noise pattern reduced.

A method and apparatus, wherein techniques which can be used to carry out the third generalized method include, for example:

• junction-current control techniques for periodically inducing VLDs into a mode of frequency hopping, using thermal feedback;
• and multi-mode visible laser diodes (VLDs) operated just above their lasing threshold.

A method and apparatus, wherein the planar laser illumination beam is temporal frequency modulated prior to target object illumination employing drive-current modulated visible laser diodes (VLDs) into modes of frequency hopping and the like.

A method and apparatus, wherein a planar laser illumination beam (PLIB) is temporal frequency modulated prior to target object illumination employing multi-mode visible laser diodes (VLDs) operated just above their lasing threshold.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein the spatial intensity modulation techniques that can be used to carry out the method include, for example:

• mechanisms for moving the relative position/motion of a spatial intensity modulation array (e.g. screen) relative to a cylindrical lens array and/or a laser diode array, including reciprocating a pair of rectilinear spatial intensity modulation arrays relative to each other, as well as rotating a spatial intensity modulation array ring structure about each PLIM employed in the PLIIM-based system;
• a rotating spatial intensity modulation disc;
• and other spatial intensity modulation devices.

A fifth generalized method of speckle-noise pattern reduction and particular forms of apparatus therefor based on reducing the spatial-coherence of a planar laser illumination beam (PLIB) before it illuminates the target object by applying spatial intensity modulation techniques during the transmission of the PLIB towards the target.

A method and apparatus, wherein the wavefront of a transmitted planar laser illumination beam (PLIB) is spatially intensity modulated prior to illuminating a target object (e.g. package) therewith so that the object is illuminated with a spatially coherent-reduced planar laser beam and, as a result, numerous substantially different time-varying speckle-noise patterns are produced and detected over the photo-integration time period of the image detection array (in the IFD subsystem), thereby allowing these speckle-noise patterns to be temporally averaged and possibly spatially averaged over the photo-integration time period and the RMS power of observable speckle-noise pattern reduced.

A method and apparatus, wherein a pair of spatial intensity modulation (SIM) panels are micro-oscillated with respect to a cylindrical lens array so as to spatial-intensity modulate the planar laser illumination beam (PLIB) prior to target object illumination.

A sixth generalized method of speckle-noise pattern reduction and particular forms of apparatus therefor based on reducing the spatial-coherence of a planar laser illumination beam after it illuminates the target by applying spatial intensity modulation techniques during the detection of the reflected/scattered PLIB.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein the method is based on spatial intensity modulating a composite-type “return” PLIB produced by a composite PLIB illuminating and reflecting and scattering off an object so that the return PLIB detected by the image detection array (in the IFD subsystem) constitutes a spatially coherent-reduced laser beam and, as a result, numerous time-varying speckle-noise patterns are detected over the photo-integration time period of the image detection array (in the IFD subsystem), thereby allowing these time-varying speckle-noise patterns to be temporally and spatially-averaged and the RMS power of the observed speckle-noise patterns reduced.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein (i) a return PLIB produced by a transmitted PLIB illuminating and reflecting/scattering off an object is spatial-intensity modulated (along the dimensions of the image detection elements) according to a spatial-intensity modulation function (SIMF) so as to modulate the phase along the wavefront of the composite return PLIB and produce numerous substantially different time-varying speckle-noise patterns at the image detection array in the IFD Subsystem, and also (ii) temporally and spatially average the numerous time-varying speckle-noise patterns produced at the image detection array during the photo-integration time period thereof, thereby reducing the RMS power of the speckle-noise patterns observed at the image detection array.

A method and apparatus, wherein a composite-type “return” PLIB (produced when the transmitted PLIB illuminates and reflects and/or scatters off the target object) is spatial intensity modulated, constituting a spatially coherent-reduced laser light beam and, as a result, numerous time-varying speckle-noise patterns are detected over the photo-integration time period of the image detection array in the IFD subsystem, thereby allowing these time-varying speckle-noise patterns to be temporally and/or spatially averaged and the observable speckle-noise pattern reduced.

A method and apparatus, wherein the return planar laser illumination beam is spatial-intensity modulated prior to detection at the image detector.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, wherein spatial intensity modulation techniques which can be used to carry out the method include, for example:

• a mechanism for physically or photo-electronically rotating a spatial intensity modulator (e.g. apertures, irises, etc.) about the optical axis of the imaging lens of the camera module;
• and any other axially symmetric, rotating spatial intensity modulation element arranged before the entrance pupil of the camera module, through which the received PLIB beam may enter at any angle or orientation during illumination and image detection operations.

A seventh generalized method of speckle-noise pattern reduction and particular forms of apparatus therefor based on reducing the temporal coherence of a planar laser illumination beam (PLIB) after it illuminates the target by applying temporal intensity modulation techniques during the detection of the reflected/scattered PLIB.

A method and apparatus, wherein a composite-type “return” PLIB (produced when the transmitted PLIB illuminates and reflects and/or scatters off the target object) is temporal intensity modulated, constituting a temporally coherent-reduced laser beam and, as a result, numerous time-varying (random) speckle-noise patterns are detected over the photo-integration time period of the image detection array (in the IFD subsystem), thereby allowing these time-varying speckle-noise patterns to be temporally and/or spatially averaged and the observable speckle-noise pattern reduced. This method can be practiced with any of the PLIM-based systems of the present invention disclosed herein, as well as any system constructed in accordance with the general principles of the present invention.

A method and apparatus, wherein a return planar laser illumination beam is temporal intensity modulated prior to image detection by employing high-speed light gating/switching principles.

An eighth generalized speckle-noise pattern reduction method of the present invention, wherein a series of consecutively captured digital images of an object, containing speckle-pattern noise, are buffered over a series of consecutively different photo-integration time periods in the hand-held PLIIM-based imager, and thereafter spatially corresponding pixel data subsets defined over a small window in the captured digital images are additively combined and averaged so as to produce spatially corresponding pixels data subsets in a reconstructed image of the object, containing speckle-pattern noise having a substantially reduced level of power.

A PLIIM-based system embodying a speckle-pattern noise reduction subsystem comprising a linear (1D) image sensor with vertically-elongated image detection elements, a pair of planar laser illumination modules (PLIMs), and a 2-D PLIB micro-oscillation mechanism arranged therewith for enabling both lateral and transverse micro-movement of the planar laser illumination beam (PLIB).

A PLIIM-based system embodying a speckle-pattern noise reduction subsystem comprising a linear (1D) image sensor with vertically-elongated image detection elements, a pair of planar laser illumination modules (PLIMs), and a 2-D PLIB micro-oscillation mechanism arranged therewith for enabling both lateral and transverse micro-movement of the planar laser illumination beam (PLIB).

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, employing linear electronic image detection arrays having elongated image detection elements with a high height-to-width (H/W) aspect ratio.

A method of and apparatus for reducing the power of speckle-noise patterns observable at the electronic image detection array of a PLIIM-based system, employing linear (or area) electronic image detection arrays having vertically-elongated image detection elements, i.e. having a high height-to-width (H/W) aspect ratio.

A PLIIM-based system with an integrated speckle-pattern noise reduction subsystem, wherein a micro-oscillating cylindrical lens array micro-oscillates a planar laser illumination beam (PLIB) laterally along its planar extent to produce spatial-incoherent PLIB components and optically combines and projects said spatially-incoherent PLIB components onto the same points on the surface of an object to be illuminated, and wherein a micro-oscillating light reflecting structure micro-oscillates the PLB components transversely along the direction orthogonal to said planar extent, and a linear (1D) image detection array with vertically-elongated image detection elements detects time-varying speckle-noise patterns produced by the spatially-incoherent components reflected/scattered off the illuminated object.

A PLIIM-based system with an integrated speckle-pattern noise reduction subsystem, wherein a first micro-oscillating light reflective element micro-oscillates a planar laser illumination beam (PLIB) laterally along its planar extent to produce spatially-incoherent PLIB components, a second micro-oscillating light reflecting element micro-oscillates the spatially-incoherent PLIB components transversely along the direction orthogonal to said planar extent, and wherein a stationary cylindrical lens array optically combines and projects said spatially-incoherent PLIB components onto the same points on the surface of an object to be illuminated, and a linear (1D) image detection array with vertically-elongated image detection elements detects time-varying speckle-noise patterns produced by the spatially incoherent components reflected/scattered off the illuminated object.

A PLIIM-based system with an integrated speckle-pattern noise reduction subsystem, wherein an acousto-optic Bragg cell micro-oscillates a planar laser illumination beam (PLIB) laterally along its planar extent to produce spatially-incoherent PLIB components, a stationary cylindrical lens array optically combines and projects said spatially-incoherent PLIB components onto the same points on the surface of an object to be illuminated, and wherein a micro-oscillating light reflecting structure micro-oscillates the spatially-incoherent PLIB components transversely along the direction orthogonal to said planar extent, and a linear (1D) image detection array with vertically-elongated image detection elements detects time-varying speckle-noise patterns produced by spatially incoherent PLIB components reflected/scattered off the illuminated object.

A PLIIM-based system with an integrated speckle-pattern noise reduction subsystem, wherein a high-resolution deformable mirror (DM) structure micro-oscillates a planar laser illumination beam (PLIB) laterally along its planar extent to produce spatially-incoherent PLIB components, a micro-oscillating light reflecting element micro-oscillates the spatially-incoherent PLIB components transversely along the direction orthogonal to said planar extent, and wherein a stationary cylindrical lens array optically combines and projects the spatially-incoherent PLIB components onto the same points on the surface of an object to be illuminated, and a linear (1D) image detection array with vertically-elongated image detection elements detects time-varying speckle-noise patterns produced by said spatially incoherent PLIB components reflected/scattered off the illuminated object.

A PLIM-based system with an integrated speckle-pattern noise reduction subsystem, wherein a micro-oscillating cylindrical lens array micro-oscillates a planar laser illumination beam (PLIB) laterally along its planar extent to produce spatially-incoherent PLIB components which are optically combined and projected onto the same points on the surface of an object to be illuminated, and a micro-oscillating light reflective structure micro-oscillates the spatially-incoherent PLIB components transversely along the direction orthogonal to said planar extent as well as the field of view (FOV) of a linear (1D) image detection array having vertically-elongated image detection elements, whereby said linear CCD detection array detects time-varying speckle-noise patterns produced by the spatially incoherent PLIB components reflected/scattered off the illuminated object.

A PLIIM-based system with an integrated speckle-pattern noise reduction subsystem, wherein a micro-oscillating cylindrical lens array micro-oscillates a planar laser illumination beam (PLIB) laterally along its planar extent and produces spatially-incoherent PLIB components which are optically combined and project onto the same points of an object to be illuminated, a micro-oscillating light reflective structure micro-oscillates transversely along the direction orthogonal to said planar extent, both PLIB and the field of view (FOV) of a linear (1D) image detection array having vertically-elongated image detection elements, and a PLIB/FOV folding mirror projects the micro-oscillated PLIB and FOV towards said object, whereby said linear image detection array detects time-varying speckle-noise patterns produced by the spatially incoherent PLIB components reflected/scattered off the illuminated object.

A PLIIM-based system with an integrated speckle-pattern noise reduction subsystem, wherein a phase-only LCD-based phase modulation panel micro-oscillates a planar laser illumination beam (PLIB) laterally along its planar extent and produces spatially-incoherent PLIB components, a stationary cylindrical lens array optically combines and projects the spatially-incoherent PLIB components onto the same points on the surface of an object to be illuminated, and wherein a micro-oscillating light reflecting structure micro-oscillates the spatially-incoherent PLIB components transversely along the direction orthogonal to said planar extent, and a linear (1D) CCD image detection array with vertically-elongated image detection elements detects time-varying speckle-noise patterns produced by the spatially incoherent PLIB components reflected/scattered off the illuminated object.

A PLIIM-based system with an integrated speckle-pattern noise reduction subsystem, wherein a multi-faceted cylindrical lens array structure rotating about its longitudinal axis within each PLIM micro-oscillates a planar laser illumination beam (PLIB) laterally along its planar extent and produces spatially-incoherent PLIB components therealong, a stationary cylindrical lens array optically combines and projects the spatially-incoherent PLIB components onto the same points on the surface of an object to be illuminated, and wherein a micro-oscillating light reflecting structure micro-oscillates the spatially-incoherent PLIB components transversely along the direction orthogonal to said planar extent, and a linear (1D) image detection array with vertically-elongated image detection elements detects time-varying speckle-noise patterns produced by the spatially incoherent PLIB components reflected/scattered off the illuminated object.

A PLIIM-based system with an integrated speckle-pattern noise reduction subsystem, wherein a multi-faceted cylindrical lens array structure within each PLIM rotates about its longitudinal and transverse axes, micro-oscillates a planar laser illumination beam (PLIB) laterally along its planar extent as well as transversely along the direction orthogonal to said planar extent, and produces spatially-incoherent PLIB components along said orthogonal directions, and wherein a stationary cylindrical lens array optically combines and projects the spatially-incoherent PLIB components onto the same points on the surface of an object to be illuminated, and a linear (1D) image detection array with vertically-elongated image detection elements detects time-varying speckle-noise patterns produced by the spatially incoherent PLIB components reflected/scattered off the illuminated object.

A PLIIM-based system with an integrated hybrid-type speckle-pattern noise reduction subsystem, wherein a high-speed temporal intensity modulation panel temporal intensity modulates a planar laser illumination beam (PLIB) to produce temporally-incoherent PLIB components along its planar extent, a stationary cylindrical lens array optically combines and projects the temporally-incoherent PLIB components onto the same points on the surface of an object to be illuminated, and wherein a micro-oscillating light reflecting element micro-oscillates the PLIB transversely along the direction orthogonal to said planar extent to produce spatially-incoherent PLIB components along said transverse direction, and a linear (1D) image detection array with vertically-elongated image detection elements detects time-varying speckle-noise patterns produced by the temporally and spatially incoherent PLIB components reflected/scattered off the illuminated object.

A PLIIM-based system with an integrated hybrid-type speckle-pattern noise reduction subsystem, wherein an optically-reflective cavity (i.e. etalon) externally attached to each VLD in the system temporal phase modulates a planar laser illumination beam (PLIB) to produce temporally-incoherent PLIB components along its planar extent, a stationary cylindrical lens array optically combines and projects the temporally-incoherent PLIB components onto the same points on the surface of an object to be illuminated, and wherein a micro-oscillating light reflecting element micro-oscillates the PLIB transversely along the direction orthogonal to said planar extent to produce spatially-incoherent PLIB components along said transverse direction, and a linear (1D) image detection array with vertically-elongated image detection elements detects time-varying speckle-noise patterns produced by the temporally and spatially incoherent PLIB components reflected/scattered off the illuminated object.

A PLIIM-based system with an integrated hybrid-type speckle-pattern noise reduction subsystem, wherein each visible mode locked laser diode (MLLD) employed in the PLIM of the system generates a high-speed pulsed (i.e. temporal intensity modulated) planar laser illumination beam (PLIB) having temporally-incoherent PLIB components along its planar extent, a stationary cylindrical lens array optically combines and projects the temporally-incoherent PLIB components onto the same points on the surface of an object to be illuminated, and wherein a micro-oscillating light reflecting element micro-oscillates PLIB transversely along the direction orthogonal to said planar extent to produce spatially-incoherent PLIB components along said transverse direction, and a linear (1D) image detection array with vertically-elongated image detection elements detects time-varying speckle-noise patterns produced by the temporally and spatially incoherent PLIB components reflected/scattered off the illuminated object.

A PLIIM-based system with an integrated hybrid-type speckle-pattern noise reduction subsystem, wherein the visible laser diode (VLD) employed in each PLIM of the system is continually operated in a frequency-hopping mode so as to temporal frequency modulate the planar laser illumination beam (PLIB) and produce temporally-incoherent PLIB components along its planar extent, a stationary cylindrical lens array optically combines and projects the temporally-incoherent PLIB components onto the same points on the surface of an object to be illuminated, and wherein a micro-oscillating light reflecting element micro-oscillates the PLIB transversely along the direction orthogonal to said planar extent and produces spatially-incoherent PLIB components along said transverse direction, and a linear (1D) image detection array with vertically-elongated image detection elements detects time-varying speckle-noise patterns produced by the temporally and spatial incoherent PLIB components reflected/scattered off the illuminated object.

A PLIIM-based system with an integrated hybrid-type speckle-pattern noise reduction subsystem, wherein a pair of micro-oscillating spatial intensity modulation panels modulate the spatial intensity along the wavefront of a planar laser illumination beam (PLIB) and produce spatially-incoherent PLIB components along its planar extent, a stationary cylindrical lens array optically combines and projects the spatially-incoherent PLIB components onto the same points on the surface of an object to be illuminated, and wherein a micro-oscillating light reflective structure micro-oscillates said PLIB transversely along the direction orthogonal to said planar extent and produces spatially-incoherent PLIB components along said transverse direction, and a linear (1D) image detection array having vertically-elongated image detection elements detects time-varying speckle-noise patterns produced by the spatially incoherent PLIB components reflected/scattered off the illuminated object.

A PLIIM-based hand-supportable linear imager which contains within its housing, a PLIIM-based image capture and processing engine comprising a dual-VLD PLIA and a 1-D (i.e. linear) image detection array with vertically-elongated image detection elements and configured within an optical assembly that operates in accordance with the first generalized method of speckle-pattern noise reduction of the present invention, and which also has integrated with its housing, a LCD display panel for displaying images captured by said engine and information provided by a host computer system or other information supplying device, and a manual data entry keypad for manually entering data into the imager during diverse types of information-related transactions supported by the PLIIM-based hand-supportable imager.

An automatically-activated PLIIM-based hand-supportable linear imager comprising:

• (i) a linear-type image formation and detection (IFD) module having a linear image detection array with vertically-elongated image detection elements and fixed focal length/variable focal distance image formation optics;
• (ii) an automatic bar code symbol detection subsystem within its hand-supportable housing for automatically activating the image processing computer for decode-processing upon automatic detection of an bar code symbol within its bar code symbol detection field enabled by the image sensor within the IFD module;
• (iii) a manually-activatable switch for enabling transmission of symbol character data to a host computer system upon decoding a bar code symbol within a captured image frame, and (iv) a LCD display panel and a data entry keypad for supporting diverse types of transactions using the PLIIM-based hand-supportable imager.

A PLIIM-based image capture and processing engines with linear image detection array having vertically-elongated image detection elements and an integrated despeckling mechanism.

A PLIIM-based image capture and processing engine for use in a hand-supportable imager.

A hand-supportable imager having a housing containing a PLIIM-based image capture and processing engine comprising a dual-VLD PLIA, and a 2-D (area-type) image detection array configured within an optical assembly that employs a micro-oscillating cylindrical lens array which provides a despeckling mechanism that operates in accordance with the first generalized method of speckle-pattern noise reduction, and which also has integrated with its housing, a LCD display panel for displaying images captured by said engine and information provided by a host computer system or other information supplying device, and a manual data entry keypad for manually entering data into the imager during diverse types of information-related transactions supported by the PLIIM-based hand-supportable imager.

A hand-supportable imager having a housing containing a PLIIM-based image capture and processing engine comprising a dual-VLD PLIA and an area image detection array configured within an optical assembly which employs a micro-oscillating light reflective element that provides a despeckling mechanism that operates in accordance with the first generalized method of speckle-pattern noise reduction, and which also has integrated with its housing, a LCD display panel for displaying images captured by said engine and information provided by a host computer system or other information supplying device, and a manual data entry keypad for manually entering data into the imager during diverse types of information-related transactions supported by the PLIIM-based hand-supportable imager.

A hand-supportable imager having a housing containing a PLIIM-based image capture and processing engine comprising a dual-VLD PLIA and a 2-D image detection array configured within an optical assembly that employs an acousto-electric Bragg cell structure which provides a despeckling mechanism that operates in accordance with the first generalized method of speckle-pattern noise reduction, and which also has integrated with its housing, a LCD display panel for displaying images captured by said engine and information provided by a host computer system or other information supplying device, and a manual data entry keypad for manually entering data into the imager during diverse types of information-related transactions supported by the PLIIM-based hand-supportable imager.

A hand-supportable imager having a housing containing a PLIIM-based image capture and processing engine comprising a dual-VLD PLIA and a 2-D image detection array configured within an optical assembly that employs a high spatial-resolution piezo-electric driven deformable mirror (DM) structure which provides a despeckling mechanism that operates in accordance with the first generalized method of speckle-pattern noise reduction, and which also has integrated with its housing, a LCD display panel for displaying images captured by said engine and information provided by a host computer system or other information supplying device, and a manual data entry keypad for manually entering data into the imager during diverse types of information-related transactions supported by the PLIIM-based hand-supportable imager.

A hand-supportable imager having a housing containing a PLIIM-based image capture and processing engine comprising a dual-VLD PLIA and a 2-D image detection array configured within an optical assembly that employs a spatial-only liquid crystal display (PO-LCD) type spatial phase modulation panel which provides a despeckling mechanism that operates in accordance with the first generalized method of speckle-pattern noise reduction, and which also has integrated with its housing, a LCD display panel for displaying images captured by said engine and information provided by a host computer system or other information supplying device, and a manual data entry keypad for manually entering data into the imager during diverse types of information-related transactions supported by the PLIIM-based hand-supportable imager.

A hand-supportable imager having a housing containing a PLIIM-based image capture and processing engine comprising a dual-VLD PLIA and a 2-D image detection array configured within an optical assembly that employs a visible mode locked laser diode (MLLD) which provides a despeckling mechanism that operates in accordance with the second generalized method of speckle-pattern noise reduction, and which also has integrated with its housing, a LCD display panel for displaying images captured by said engine and information provided by a host computer system or other information supplying device, and a manual data entry keypad for manually entering data into the imager during diverse types of information-related transactions supported by the PLIIM-based hand-supportable imager.

A hand-supportable imager having a housing containing a PLIIM-based image capture and processing engine comprising a dual-VLD PLIA and a 2-D image detection array configured within an optical assembly that employs an electrically-passive optically-reflective cavity (i.e. etalon) which provides a despeckling mechanism that operates in accordance with the third method generalized method of speckle-pattern noise reduction, and which also has integrated with its housing, a LCD display panel for displaying images captured by said engine and information provided by a host computer system or other information supplying device, and a manual data entry keypad for manually entering data into the imager during diverse types of information-related transactions supported by the PLIIM-based hand-supportable imager.

A hand-supportable imager having a housing containing a PLIIM-based image capture and processing engine comprising a dual-VLD PLIA and a 2-D image detection array configured within an optical assembly that employs a pair of micro-oscillating spatial intensity modulation panels which provide a despeckling mechanism that operates in accordance with the fifth method generalized method of speckle-pattern noise reduction, and which also has integrated with its housing, a LCD display panel for displaying images captured by said engine and information provided by a host computer system or other information supplying device, and a manual data entry keypad for manually entering data into the imager during diverse types of information-related transactions supported by the PLIIM-based hand-supportable imager.

A hand-supportable imager having a housing containing a PLIIM-based image capture and processing engine comprising a dual-VLD PLIA and a 2-D image detection array configured within an optical assembly that employs a electro-optical or mechanically rotating aperture (i.e. iris) disposed before the entrance pupil of the IFD module, which provides a despeckling mechanism that operates in accordance with the sixth method generalized method of speckle-pattern noise reduction, and which also has integrated with its housing, a LCD display panel for displaying images captured by said engine and information provided by a host computer system or other information supplying device, and a manual data entry keypad for manually entering data into the imager during diverse types of information-related transactions supported by the PLIIM-based hand-supportable imager.

A hand-supportable imager having a housing containing a PLIIM-based image capture and processing engine comprising a dual-VLD PLIA and a 2-D image detection array configured within an optical assembly that employs a high-speed electro-optical shutter disposed before the entrance pupil of the IFD module, which provides a despeckling mechanism that operates in accordance with the seventh generalized method of speckle-pattern noise reduction, and which also has integrated with its housing, a LCD display panel for displaying images captured by said engine and information provided by a host computer system or other information supplying device, and a manual data entry keypad for manually entering data into the imager during diverse types of information-related transactions supported by the PLIIM-based hand-supportable imager.

A PLIIM-based image capture and processing engine for use in the hand-supportable imagers, presentation scanners, and the like, comprising PLIAs, and IFD (i.e. camera) subsystem and associated optical components mounted on an optical-bench/multi-layer PC board, contained between the upper and lower portions of the engine housing.

A PLIIM-based image capture and processing engine for use in a PLIIM-based hand-supportable linear imager comprising a housing containing a dual-VLD PLIA and a linear image detection array with vertically-elongated image detection elements configured within an optical assembly that provides a despeckling mechanism which operates in accordance with the first generalized method of speckle-pattern noise reduction.

A PLIIM-based image capture and processing engine for use in a PLIIM-based hand-supportable linear imager comprising a housing containing a dual-VLD PLIA and a linear image detection array having vertically-elongated image detection elements configured within an optical assembly which provides a despeckling mechanism that operates in accordance with the first generalized method of speckle-pattern noise reduction.

A PLIIM-based image capture and processing engine for use in the hand-supportable imagers, presentation scanners, and the like, comprising a dual-VLD PLIA and a linear image detection array having vertically-elongated image detection elements configured within an optical assembly which employs high-resolution deformable mirror (DM) structure which provides a despeckling mechanism that operates in accordance with the first generalized method of speckle-pattern noise reduction.

A PLIIM-based image capture and processing engine for use in the hand-supportable imagers, presentation scanners, and the like, comprising a dual-VLD PLIA and a linear image detection array having vertically-elongated image detection elements configured within an optical assembly that employs a high-resolution phase-only LCD-based phase modulation panel which provides a despeckling mechanism that operates in accordance with the first generalized method of speckle-pattern noise reduction.

A PLIIM-based image capture and processing engine for use in the hand-supportable imagers, presentation scanners, and the like, comprising a dual-VLD PLIA and a linear image detection array having vertically-elongated image detection elements configured within an optical assembly that employs a rotating multi-faceted cylindrical lens array structure which provides a despeckling mechanism that operates in accordance with the first generalized method of speckle-pattern noise reduction.

A PLIIM-based image capture and processing engine for use in the hand-supportable imagers, presentation scanners, and the like, comprising a dual-VLD PLIA and a linear image detection array having vertically-elongated image detection elements configured within an optical assembly that employs a high-speed temporal intensity modulation panel (i.e. optical shutter) which provides a despeckling mechanism that operates in accordance with the second generalized method of speckle-pattern noise reduction.

A PLIIM-based image capture and processing engine for use in the hand-supportable imagers, presentation scanners, and the like, comprising a dual-VLD PLIA and a linear image detection array having vertically-elongated image detection elements configured within an optical assembly that employs visible mode-locked laser diode (MLLDs) which provide a despeckling mechanism that operates in accordance with the second method generalized method of speckle-pattern noise reduction.

A PLIIM-based image capture and processing engine for use in the hand-supportable imagers, presentation scanners, and the like, comprising a dual-VLD PLIA and a linear image detection array having vertically-elongated image detection elements configured within an optical assembly that employs an optically-reflective temporal phase modulating structure (i.e. etalon) which provides a despeckling mechanism that operates in accordance with the third generalized method of speckle-pattern noise reduction.

A PLIIM-based image capture and processing engine for use in the hand-supportable imagers, presentation scanners, and the like, comprising a dual-VLD PLIA and a linear image detection array having vertically-elongated image detection elements configured within an optical assembly that employs a pair of reciprocating spatial intensity modulation panels which provide a despeckling mechanism that operates in accordance with the fifth method generalized method of speckle-pattern noise reduction.

A PLIIM-based image capture and processing engine for use in the hand-supportable imagers, presentation scanners, and the like, comprising a dual-VLD PLIA and a linear image detection array having vertically-elongated image detection elements configured within an optical assembly that employs spatial intensity modulation aperture which provides a despeckling mechanism that operates in accordance with the sixth method generalized method of speckle-pattern noise reduction.

A PLIIM-based image capture and processing engine for use in the hand-supportable imagers, presentation scanners, and the like, comprising a dual-VLD PLIA and a linear image detection array having vertically-elongated image detection elements configured within an optical assembly that employs a temporal intensity modulation aperture which provides a despeckling mechanism that operates in accordance with the seventh generalized method of speckle-pattern noise reduction.

A PLIIM-based image capture and processing engine for use in the hand-supportable imagers, presentation scanners, and the like, comprising a dual-VLD PLIA and a linear image detection array having vertically-elongated image detection elements configured within an optical assembly that employs an image processing subsystem which provides a despeckling mechanism that operates in accordance with the seventh generalized method of speckle-pattern noise reduction.

A PLIIM-based image capture and processing engine for use in the hand-supportable imagers, presentation scanners, and the like, comprising a dual-VLD PLIA and a linear image detection array having vertically-elongated image detection elements configured within an optical assembly that employs an image formation and detection (IFD) subsystem which provides a despeckling mechanism that operates in accordance with the eighth generalized method of speckle-pattern noise reduction.

A PLIIM-based hand-supportable imager having a 2D PLIIM-based engine and an integrated despeckling mechanism

A method of and apparatus for mounting a linear image sensor chip within a PLIIM-based system to prevent misalignment between the field of view (FOV) of said linear image sensor chip and a planar laser illumination beam (PLIB) produced by said PLIIM-based system, in response to thermal expansion or cycling within said PLIIM-based system.

Apparatus for mounting a linear image sensor chip within a PLIIM-based system to prevent misalignment between the field of view (FOV) of said linear image sensor chip and a planar laser illumination beam (PLIB) produced by said PLIIM-based system, in response to thermal expansion or cycling within said PLIIM-based system.

A method of mounting a linear image sensor chip relative to a heat sinking structure to prevent any misalignment between the field of view (FOV) of said linear image sensor chip and a PLIB produced by a PLIA within a PLIIM-based camera subsystem, thereby improving the performance of the PLIIM-based camera system during planar laser illumination and imaging operations.

Apparatus for mounting a linear image sensor chip relative to a heat sinking structure to prevent any misalignment between the field of view (FOV) of the linear image sensor chip and the PLIA produced by the PLIA within the camera subsystem, thereby improving the performance of the PLIIM-based system during planar laser illumination and imaging operations.

A camera subsystem wherein a linear image sensor chip employed in said camera subsystem is rigidly mounted to the camera body of a PLIIM-based system via an image sensor mounting mechanism which prevents any significant misalignment between the field of view (FOV) of the image detection elements on said linear image sensor chip and a planar laser illumination beam (PLIB) produced by a PLIA in said PLIIM-based system, used to illuminate the FOV thereof within the camera subsystem.

A PLIIM-based object identification and attribute acquisition system, in which FTP service is provided to enable the uploading of system and application software from an FTP site on the Internet, and/or downloading of diagnostic error tables maintained in a central management information database.

A PLIIM-based object identification and attribute acquisition system, in which SMTP service is provided for issuing outgoing-mail messages to a remote service technician.

An object identification and attribute acquisition of unitary construction, wherein packages, arranged in a singulated or non-singulated configuration, are transported along a high-speed conveyor belt, detected and dimensioned by a LADAR-based imaging and profiling (LDIP) subsystem, and identified by an automatic PLIIM-based bar code symbol reading system employing a 1-D (i.e. linear) type CCD scanning array, below which a variable focus imaging lens is mounted for imaging bar coded packages transported therebeneath in a fully automated manner.

A object attribute acquisition and analysis system completely contained within a single housing of compact lightweight construction.

An object identification and attribute acquisition system, which is capable of (1) acquiring and analyzing in real-time the physical attributes of objects such as, for example, (i) the surface reflectively characteristics of objects, (ii) geometrical characteristics of objects, including shape measurement, (iii) the motion (i.e. trajectory) and velocity of objects, as well as (iv) bar code symbol, textual, and other information-bearing structures disposed thereon, and (2) generating information structures representative thereof for use in diverse applications including, for example, object identification, tracking, and/or transportation/routing operations.

An object identification and attribute acquisition system, wherein a multi-wavelength i.e. color-sensitive) Laser Doppler Imaging and Profiling (LDIP) subsystem is provided for acquiring and analyzing (in real-time) the physical attributes of objects such as, for example, (i) the surface reflectively characteristics of objects, (ii) geometrical characteristics of objects, including shape measurement, and (iii) the motion (i.e. trajectory) and velocity of objects.

An object identification and attribute acquisition system, wherein an image formation and detection (i.e. camera) subsystem is provided having (i) a planar laser illumination and monochromatic imaging (PLIIM) subsystem, (ii) intelligent auto-focus/auto-zoom imaging optics, and (iii) a high-speed electronic image detection array with height/velocity-driven photo-integration time control to ensure the capture of images having constant image resolution (i.e. constant dpi) independent of package height.

An object identification and attribute acquisition system, wherein an advanced image-based bar code symbol decoder is provided for reading 1-D and 2-D bar code symbol labels on objects, and an advanced optical character recognition (OCR) processor is provided for reading textual information, such as alphanumeric character strings, representative within digital images that have been captured and lifted from the system.

An object identification and attribute acquisition system for use in the high-speed parcel, postal and material handling industries.

An object identification and attribute acquisition system, which is capable of being used to identify, track and route packages, as well as identify individuals for security and personnel control applications.

An object identification and attribute acquisition system which enables bar code symbol reading of linear and two-dimensional bar codes, OCR-compatible image lifting, dimensioning, singulation, object (e.g. package) position and velocity measurement, and label-to-parcel tracking from a single overhead-mounted housing measuring one 20″×20″×8″.

An object identification and attribute acquisition system which employs a built-in source for producing a planar laser illumination beam that is coplanar with the field of view of the imaging optics used to form images on an electronic image detection array, thereby eliminating the need for large, complex, high-power consuming sodium vapor lighting equipment used in conjunction with most industrial CCD cameras.

An object identification and attribute acquisition system, which utilizes a single input cable for supplying input (AC) power and a single output cable for outputting digital data to host systems.

An object identification and attribute acquisition system, wherein such systems can be configured to construct multi-sided tunnel-type imaging systems, used in airline baggage handling systems, as well as in postal and parcel identification, dimensioning and sortation systems.

An object identification and attribute acquisition system, for use in (i) automatic checkout solutions installed within retail shopping environments (e.g. supermarkets), (ii) security and people analysis applications, (iii) object and/or material identification and inspection systems, as well as (iv) diverse portable, in-counter and fixed applications in virtual any industry.

An object identification and attribute acquisition system in the form of a high-speed object identification and attribute acquisition system, wherein the PLIIM subsystem projects a field of view through a first light transmission aperture formed in the system housing, and a pair of planar laser illumination beams through second and third light transmission apertures which are optically isolated from the first light transmission aperture to prevent laser beam scattering within the housing of the system, and the LDIP subsystem projects a pair of laser beams at different angles through a fourth light transmission aperture.

An automated unitary-type package identification and measuring system (i.e. contained within a single housing or enclosure), wherein a PLIIM-based scanning subsystem is used to read bar codes on packages passing below or near the system, while a package dimensioning subsystem is used to capture information about the package prior to being identified.

An automated package identification and measuring system, wherein Laser Detecting And Ranging (LADAR-based) scanning methods are used to capture two-dimensional range data maps of the space above a conveyor belt structure, and two-dimensional image contour tracing methods are used to extract package dimension data therefrom.

A unitary object identification and attribute acquisition system which is capable of (1) acquiring and analyzing in real-time the physical attributes of objects such as, for example, (i) the surface reflectivity characteristics of objects, (ii) geometrical characteristics of objects, including shape measurement, (iii) the motion (i.e. trajectory) and velocity of objects, as well as (iv) bar code symbol, textual, and other information-bearing structures disposed thereon, and (2) generating information structures representative thereof for use in diverse applications including, for example, object identification, tracking, and/or transportation/routing operations.

A unitary object identification and attribute acquisition system, wherein a multi-wavelength (i.e. color-sensitive) Laser Doppler Imaging and Profiling (LDIP) subsystem is provided for acquiring and analyzing (in real-time) the physical attributes of objects such as, for example, (i) the surface reflectivity characteristics of objects, (ii) geometrical characteristics of objects, including shape measurement, and (iii) the motion (i.e. trajectory) and velocity of objects.

A unitary object identification and attribute acquisition system, wherein an image formation and detection (i.e. camera) subsystem is provided having (i) a planar laser illumination and imaging (PLIIM) subsystem, (ii) intelligent auto-focus/auto-zoom imaging optics, and (iii) a high-speed electronic image detection array with height/velocity-driven photo-integration time control to ensure the capture of images having constant image resolution (i.e. constant dpi) independent of package height.

A unitary object identification and attribute acquisition system, wherein an advanced image-based bar code symbol decoder is provided for reading 1-D and 2-D bar code symbol labels on objects, and an advanced optical character recognition (OCR) processor is provided for reading textual information, such as alphanumeric character strings, representative within digital images that have been captured and lifted from the system.

A unitary object identification and attribute acquisition system which enables bar code symbol reading of linear and two-dimensional bar codes, OCR-compatible image lifting, dimensioning, singulation, object (e.g. package) position and velocity measurement, and label-to-parcel tracking from a single overhead-mounted housing measuring less than or equal to 20 inches in width, 20 inches in length, and 8 inches in height.

A unitary object identification and attribute acquisition system which employs a built-in source for producing a planar laser illumination beam that is coplanar with the field of view (FOV) of the imaging optics used to form images on an electronic image detection array, thereby eliminating the need for large, complex, high-power power consuming sodium vapor lighting equipment used in conjunction with most industrial CCD cameras.

A unitary object identification and attribute acquisition system which can be configured to construct multi-sided tunnel-type imaging systems, used in airline baggage-handling systems, as well as in postal and parcel identification, dimensioning and sortation systems.

A unitary object identification and attribute acquisition system, for use in (i) automatic checkout solutions installed within retail shopping environments (e.g. supermarkets), (ii) security and people analysis applications, (iii) object and/or material identification and inspection systems, as well as (iv) diverse portable, in-counter and fixed applications in virtual any industry.

A unitary object identification and attribute acquisition system in the form of a high-speed object identification and attribute acquisition system, wherein the PLIIM subsystem projects a field of view through a first light transmission aperture formed in the system housing, and a pair of planar laser illumination beams through second and third light transmission apertures which are optically isolated from the first light transmission aperture to prevent laser beam scattering within the housing of the system, and the LDIP subsystem projects a pair of laser beams at different angles through a fourth light transmission aperture.

A unitary-type package identification and measuring system contained within a single housing or enclosure, wherein a PLIIM-based scanning subsystem is used to read bar codes on packages passing below or near the system, while a package dimensioning subsystem is used to capture information about attributes (i.e. features) about the package prior to being identified.

A planar laser illumination and imaging (PLIIM) system comprising:

• a linear (i.e. 1-dimensional) type image formation and detection (IFD) module having a fixed focal length imaging lens, a fixed focal distance and fixed field of view;
• a pair of planar laser illumination arrays (PLIAs) mounted on opposite sides of said linear (i.e. 1-dimensional) type image formation and detection (IFD) module, such that said pair of planar illumination arrays (PLIAs) produce a substantially planar laser beam illumination which is disposed substantially coplanar with the field of view of the image formation and detection module during object illumination and image detection operations carried out by the PLIIM system on a moving bar code symbol or other graphical structure.

A method of automatically controlling the output optical power of the laser diodes in a planar laser illumination array (PLIA) in a PLIIM-based imaging system, comprising the steps:

• in response to the detected speed of objects transported along a conveyor belt or like structure, so that each digital image of each object captured by said PLIIM-based imaging system has a substantially uniform “white” level, regardless of conveyor belt speed, thereby simplifying the software-based image processing operations which need to subsequently carried out by the image processing computer subsystem.

Apparatus for automatically controlling the output optical power of the VLDs in the planar laser illumination array (PLIA) of a PLIIM-based imaging system in response to the detected speed of objects transported along a conveyor belt, so that each digital image of each object captured by said PLIIM-based imaging system has a substantially uniform “white” level, regardless of conveyor belt speed, thereby simplifying the software-based image processing operations which need to subsequently carried out by the image processing computer subsystem.

A method of automatically controlling the output optical power of laser diodes in the planar laser illumination array (PLIA) of a PLIIM-based imaging system comprising the steps:

• a camera control computer provided in said PLIIM-based imaging system performs the following operations:
• (i) computes the optical power which each laser diode in said PLIIM-based imaging system must produce in order that each digital image captured by said PLIIM-based imaging system will have substantially the same “white” level, regardless of conveyor belt speed;
• and (2) transmits the computed optical power value(s) of said laser diodes to a micro-controller associated with said PLIA in said PLIIM-based imaging system.

Apparatus for automatically controlling the output optical power of laser diodes in the planar laser illumination array (PLIA) of a PLIIM-based imaging system, comprising:

• a camera control computer provided in said PLIIM-based imaging system programmed to performs the following operations:
• (i) computes the optical power which each laser diode in said PLIIM-based imaging system must produce in order that each digital image captured by said PLIIM-based imaging system will have substantially the same “white” level, regardless of conveyor belt speed;
• and (2) transmits the computed optical power value(s) of said laser diodes to a micro-controller associated with said PLIA in said PLIIM-based imaging system.

Apparatus for automatically compensating for viewing-angle distortion in PLIIM-based linear imaging and profiling systems which would otherwise occur when images of object surfaces are being captured as object surfaces, arranged at skewed viewing angles, move past the coplanar PLIB/FOV of such PLIIM-based linear imaging and profiling systems, configured for top and side imaging operations.

A method of and apparatus for automatically compensating for viewing-angle distortion in PLIIM-based linear imaging and profiling systems by way of dynamically adjusting the line rate of the camera (i.e. IFD) subsystem, in automatic response to real-time measurement of the object surface gradient (i.e. slope) computed by the camera control computer using object height data captured by the LDIP subsystem.

A method of and apparatus for automatically compensating for viewing-angle distortion in PLIIM-based linear imaging and profiling systems by way of dynamically adjusting the line rate of the camera (i.e. IFD) subsystem, in automatic response to real-time measurement of the object surface gradient (i.e. slope) computed by the camera control computer using object height data captured by the LDIP subsystem.

A real-time camera control process carried out within a camera control computer in a PLIIM-based camera system, for intelligently enabling the camera system to zoom in and focus upon only the surfaces of a detected package which might bear package identifying and/or characterizing information that can be reliably captured and utilized by the system or network within which the camera subsystem is installed.

A real-time camera control process for significantly reducing the amount of image data captured by the system which does not contain relevant information, thus increasing the package identification performance of the camera subsystem, while using less computational resources, thereby allowing the camera subsystem to perform more efficiently and productivity.

A camera control computer for generating real-time camera control signals that drive the zoom and focus lens group translators within a high-speed auto-focus/auto-zoom digital camera subsystem so that the camera automatically captures digital images having (1) square pixels (i.e. 1:1 aspect ratio) independent of package height or velocity, (2) significantly reduced speckle-noise levels, and (3) constant image resolution measured in dots per inch (dpi) independent of package height or velocity.

An auto-focus/auto-zoom digital camera system employing a camera control computer which generates commands for cropping the corresponding slice (i.e. section) of the region of interest in the image being captured and buffered therewithin, or processed at an image processing computer.

A package dimensioning and identification system contained in a single housing of compact construction, wherein a planar laser illumination and monochromatic imaging subsystem is integrated with a Laser Doppler Imaging and Profiling (LDIP) subsystem and contained within a single housing of compact construction.

A package identification and measuring system, wherein an image-based scanning subsystem is used to read bar codes on packages passing below or near the system, while a package dimensioning subsystem is used to capture information about the package prior to being identified.

A unitary PLIIM-based object identification and attribute acquisition system comprising:

• a Real-Time Package Height Profiling And Edge Detection Processing Module within a LDIP subsystem to automatically process raw data received by the LDIP subsystem and generate, as output, time-stamped data sets that are transmitted to a camera control computer which automatically processes the received time-stamped data sets and generates real-time camera control signals that drive the focus and zoom lens group translators within a high-speed auto-focus/auto-zoom digital camera subsystem so that the camera subsystem automatically captures digital images having (1) square pixels (i.e. 1:1 aspect ratio) independent of package height or velocity, and (2) constant image resolution measured in dots per inch (dpi) independent of package height or velocity.

A real-time object height profiling method for use in a LDIP sub employed in a PLIIM-based imaging system having a camera control computer for controlling the focusing optics of said PLIIM-based imaging system, comprising the steps of:

• (a) an LDIP subsystem, detecting the range intensity (Ii) and phase angle (φi) data samples taken from a laser beam scanned off an object moving along a conveyor belt structure, said data samples being collected at various scan angles (αI) by said LDIP Subsystem during each LDIP scan cycle;
• b) at said LDIP subsystem, using the range intensity and phase angle data samples collected in step (a) in order to compute the range (Ri) and polar angle (Øi) of said object at said scan angles, with respect to a polar coordinate reference system;
• (c) at said LDIP subsystem, computing the height (yi) and position (xi) of said object at each scan angle (αI) during each LDIP scan cycle, so as to produce a time-stamped data set at said LDIP scan cycle, for transmission to and use by said camera control computer in controlling the focusing optics in said PLIIM-based imaging system.

A method of automatically processing the received time-stamped data sets and generating real-time camera control signals that drive the focus and zoom lens group translators within a high-speed auto-focus/auto-zoom digital camera subsystem (i.e. the IFD module) so that the camera subsystem automatically captures digital images having constant image resolution measured in dots per inch (DPI) independent of package height or velocity.

A method of controlling an auto-focus/auto-zoom digital camera subsystem in a PLIIM-based imaging and profiling subsystem having a camera control computer, said method comprising the steps of:

• determining the positions to which focus and zoom lens groups in the PLIIM-based imaging and profiling system are moved;
• and generating and supplying real-time camera control signals to said camera control computer so as to operate focus and zoom lens group translators within said auto-focus/auto-zoom digital camera subsystem (i.e. the IFD module) so that said focus and zoom lens groups in said PLIIM-based imaging and profiling system are moved to said determined positions so that said camera subsystem automatically captures focused digital images having constant image resolution measured in dots per inch (DPI) independent of package height or velocity.

A method of and apparatus for automatically compensating for viewing-angle distortion in PLIIM-based linear imaging and profiling systems which would otherwise occur when images of object surfaces are being captured as object surfaces, arranged at skewed viewing angles, move past the coplanar PLIB/FOV of such PLIIM-based linear imaging and profiling systems, configured for top and side imaging operations.

A method of and apparatus for performing automatic recognition of graphical intelligence contained in 2-D images captured from arbitrary 3-D object surfaces.

A PLIIM-based object identification and attribute acquisition system which is capable of performing a novel method of recognizing graphical intelligence (e.g. symbol character strings and/or bar code symbols) contained in high-resolution 2-D images lifted from arbitrary moving 3-D object surfaces, by constructing high-resolution 3-D images of the object from (i) linear 3-D surface profile maps drawn by the LDIP subsystem in the PLIIM-based profiling and imaging system, and (ii) high-resolution linear images lifted by the PLIIM-based linear imaging subsystem thereof.

A method of recognizing graphical intelligence recorded on planar substrates that have been physically distorted as a result of either (i) application of the graphical intelligence to an arbitrary 3-D object surface, or (ii) deformation of a 3-D object on which the graphical intelligence has been rendered.

A method of recognizing graphical intelligence, originally formatted for application onto planar surfaces, but applied to non-planar surfaces or otherwise to substrates having surface characteristics which differ from the surface characteristics for which the graphical intelligence was originally designed without spatial distortion.

A method of recognizing bar coded baggage identification tags as well as graphical character encoded labels which have been deformed, bent or otherwise physically distorted.

A method of and apparatus for performing automatic recognition of graphical intelligence contained in 2-D images captured from arbitrary 3-D object surfaces.

Apparatus in the form of a PLIIM-based object identification and attribute acquisition system which is capable of performing a novel method of recognizing graphical intelligence (e.g. symbol character strings and/or bar code symbols) contained in high-resolution 2-D images lifted from arbitrary moving 3-D object surfaces, by constructing high-resolution 3-D images of the object from (i) linear 3-D surface profile maps drawn by the LDIP subsystem in the PLIIM-based profiling and imaging system, and (ii) high-resolution linear images lifted by the PLIIM-based linear imaging subsystem thereof.

A PLIIM-based object identification and attribute acquisition system, wherein the method of graphical intelligence recognition employed therein is carried out in an image processing computer associated with the PLIIM-based object identification and attribute acquisition system, and involves (i) producing 3-D polygon-mesh surface models of the moving target object, (ii) projecting pixel rays in 3-D space from each pixel in each captured high-resolution linear image, and (iii) computing the points of intersection between these pixel rays and the 3-D polygon-mesh model so as to produce a high-resolution 3-D image of the target object.

A method of recognizing graphical intelligence recorded on planar substrates that have been physically distorted as a result of either (i) application of the graphical intelligence to an arbitrary 3-D object surface, or (ii) deformation of a 3-D object on which the graphical intelligence has been rendered.

A method of “undistorting” any distortions imparted to the graphical intelligence while being carried by the arbitrary 3-D object surface due to, for example, non-planar surface characteristics.

A method of recognizing graphical intelligence, originally formatted for application onto planar surfaces, but applied to non-planar surfaces or otherwise to substrates having surface characteristics which differ from the surface characteristics for which the graphical intelligence was originally designed without spatial distortion.

A method of recognizing bar coded baggage identification tags as well as graphical character encoded labels which have been deformed, bent or otherwise physically distorted.

Apparatus in the form of a PLIIM-based object identification and attribute acquisition system which is capable of performing a novel method of recognizing graphical intelligence (e.g. symbol character strings and/or bar code symbols) contained in high-resolution 2-D images lifted from arbitrary moving 3-D object surfaces, by constructing high-resolution 3-D images of the object from (i) linear 3-D surface profile maps drawn by the LDIP subsystem in the PLIIM-based profiling and imaging system, and (ii) high-resolution linear images lifted by the PLIIM-based linear imaging subsystem thereof.

A PLIIM-based object identification and attribute acquisition system, wherein the method of graphical intelligence recognition employed therein is carried out in an image processing computer associated with the PLIIM-based object identification and attribute acquisition system, and involves (i) producing 3-D polygon-mesh surface models of the moving target object, (ii) projecting pixel rays in 3-D space from each pixel in each captured high-resolution linear image, and (iii) computing the points of intersection between these pixel rays and the 3-D polygon-mesh model so as to produce a high-resolution 3-D image of the target object.

A method of performing automatic recognition of graphical intelligence contained in 2-D images captured from arbitrary 3-D object surfaces.

Apparatus for performing automatic recognition of graphical intelligence contained in 2-D images captured from arbitrary 3-D object surfaces.

A PLIIM-based object identification and attribute acquisition system which is capable of performing a novel method of recognizing graphical intelligence (e.g. symbol character strings and/or bar code symbols) contained in high-resolution 2-D images lifted from arbitrary moving 3-D object surfaces, by constructing high-resolution 3-D images of the object from (i) linear 3-D surface profile maps drawn by the LDIP subsystem in the PLIIM-based profiling and imaging system, and (ii) high-resolution linear images lifted by the PLIIM-based linear imaging subsystem thereof.

A four-sided tunnel-type object identification and attribute acquisition (PID) system constructed by arranging about a high-speed package conveyor belt subsystem, one PLIIM-based PID unit and three modified PLIIM-based PID units (without the LDIP Subsystem), wherein the LDIP subsystem in the top PID unit is configured as the master unit to detect and dimension packages transported along the belt, while the bottom PID unit is configured as a slave unit to view packages through a small gap between conveyor belt sections and the side PID units are configured as slave units to view packages from side angles slightly downstream from the master unit, and wherein all of the PID units are operably connected to an Ethernet control hub (e.g. contained within one of the slave units) of a local area network (LAN) providing high-speed data packet communication among each of the units within the tunnel system;

A tunnel-type object identification and attribute acquisition (PIAD) system comprising a plurality of PLIIM-based package identification (PID) units arranged about a high-speed package conveyor belt structure, wherein the PID units are integrated within a high-speed data communications network having a suitable network topology and configuration.

A tunnel-type PIAD system, wherein the top PID unit includes a LDIP subsystem, and functions as a master PID unit within the tunnel system, whereas the side and bottom PID units (which are not provided with a LDIP subsystem) function as slave PID units and are programmed to receive package dimension data (e.g. height, length and width coordinates) from the master PID unit, and automatically convert (i.e. transform) on a real-time basis these package dimension coordinates into their local coordinate reference frames for use in dynamically controlling the zoom and focus parameters of the camera subsystems employed in the tunnel-type system.

A tunnel-type system, wherein the camera field of view (FOV) of the bottom PID unit is arranged to view packages through a small gap provided between sections of the conveyor belt structure.

A CCD camera-based tunnel system comprising auto-zoom/auto-focus CCD camera subsystems which utilize a “package-dimension data” driven camera control computer for automatic controlling the camera zoom and focus characteristics on a real-time manner.

A CCD camera-based tunnel-type system, wherein the package-dimension data driven camera control computer involves (i) dimensioning packages in a global coordinate reference system, (ii) producing package coordinate data referenced to the global coordinate reference system, and (iii) distributing the package coordinate data to local coordinate references frames in the system for conversion of the package coordinate data to local coordinate reference frames, and subsequent use in automatic camera zoom and focus control operations carried out upon the dimensioned packages.

A CCD camera-based tunnel-type system, wherein a LDIP subsystem within a master camera unit generates (i) package height, width, and length coordinate data and (ii) velocity data, referenced with respect to the global coordinate reference system Rglobal, and these package dimension data elements are transmitted to each slave camera unit on a data communication network, and once received, the camera control computer within the slave camera unit uses its preprogrammed homogeneous transformation to converts there values into package height, width, and length coordinates referenced to its local coordinate reference system.

A CCD camera-based tunnel-type system, wherein a camera control computer in each slave camera unit uses the converted package dimension coordinates to generate real-time camera control signals which intelligently drive its camera's automatic zoom and focus imaging optics to enable the intelligent capture and processing of image data containing information relating to the identify and/or destination of the transported package.

A camera-based object identification and attribute acquisition subsystem comprising a system architecture of a slave units in relation to a master unit, wherein (1) the package height, width, and length coordinates data and velocity data elements (computed by the LDIP subsystem within the master unit) are produced by the master unit and defined with respect to the global coordinate reference system, and (2) these package dimension data elements are transmitted to each slave unit on the data communication network, converted into the package height, width, and length coordinates, and used to generate real-time camera control signals which intelligently drive the camera subsystem within each slave unit, and (3) the package identification data elements generated by any one of the slave units are automatically transmitted to the master slave unit for time-stamping, queuing, and processing to ensure accurate package dimension and identification data element linking operations.

A tunnel-type system wherein package dimension data (i.e. height, width, and length coordinates) is (i) centrally computed by a master unit and referenced to a global coordinate reference frame, (ii) transmitted over the data network to each slave unit within the system, and (iii) converted to the local coordinate reference frame of each slave unit for use by its camera control computer to drive its automatic zoom and focus imaging optics in real-time manner.

An angle measurement device integrated into the housing and support structure of a slave unit in a tunnel-type system, thereby enabling technicians to measure the pitch and yaw angle of the local coordinate system symbolically embedded within each slave unit.

A Data Element Queuing, Handling, Processing And Linking Mechanism for integration in an Object Identification and Attribute Acquisition System, wherein a programmable data element tracking and linking (i.e. indexing) module is provided for linking (1) object identity data to (2) corresponding object attribute data (e.g. object dimension-related data, object-weight data, object-content data, object-interior data, etc.) in both singulated and non-singulated object transport environments.

Data Element Queuing, Handling, Processing And Linking Mechanism for integration in an Object Identification and Attribute Acquisition System, wherein the Data Element Queuing, Handling, Processing And Linking Mechanism can be easily programmed to enable underlying functions required by the object detection, tracking, identification and attribute acquisition capabilities specified for the Object Identification and Attribute Acquisition System.

A Data-Element Queuing, Handling And Processing Subsystem for use in the PLIIM-based system, wherein object identity data element inputs (e.g. from a bar code symbol reader, RFID reader, or the like) and object attribute data element inputs (e.g. object dimensions, weight, x-ray analysis, neutron beam analysis, and the like) are supplied to a Data Element Queuing, Handling, Processing And Linking Mechanism contained therein via an I/O unit so as to generate as output, for each object identity data element supplied as input, a combined data element comprising an object identity data element, and one or more object attribute data elements (e.g. object dimensions, object weight, x-ray analysis, neutron beam analysis, etc.) collected by the I/O unit of the system.

A Data Element Queuing, Handling, Processing And Linking Mechanism which automatically receives object identity data element inputs (e.g. from a bar code symbol reader, RFID-tag reader, or the like) and object attribute data element inputs (e.g. object dimensions, object weight, x-ray images, Pulsed Fast Neutron Analysis (PFNA) image data captured by a PFNA scanner by Ancore, and QRA image data captured by a QRA scanner by Quantum Magnetics, Inc.), and automatically generates as output, for each object identity data element supplied as input, a combined data element comprising (i) an object identity data element, and (ii) one or more object attribute data elements (e.g. object dimensions, object weight, x-ray analysis, neutron beam analysis, etc.) collected and supplied to the data element queuing, handling and processing subsystem.

A stand-alone Object Identification And Attribute Information Tracking And Linking Computer System for use in diverse systems generating and collecting streams of object identification information and object attribute information.

A stand-alone Object Identification And Attribute Information Tracking And Linking Computer for use at passenger and baggage screening stations alike.

An Object Identification And Attribute Information Tracking And Linking Computer having a programmable data element queuing, handling and processing and linking subsystem, wherein each object identification data input (e.g. from a bar code reader or RFID reader) is automatically attached to each corresponding object attribute data input (e.g. object profile characteristics and dimensions, weight, X-ray images, etc.) generated in the system in which the computer is installed.

An Object Identification And Attribute Information Tracking And Linking Computer which can be programmed to receive two different streams of data input, namely:

• (i) passenger identification data input (e.g. from a bar code reader or RFID reader) used at the passenger check-in and screening station;
• and (ii) corresponding passenger attribute data input (e.g. passenger profile characteristics and dimensions, weight, X-ray images, etc.) generated at the passenger check-in and screening station, and wherein each passenger attribute data input is automatically attached to each corresponding passenger identification data element input, so as to produce a composite linked output data element comprising the passenger identification data element symbolically linked to corresponding passenger attribute data elements received at the system.

A software-based system configuration manager (i.e. system configuration “wizard” program) which can be integrated (i) within the Object Identification And Attribute Acquisition Subsystem of the present invention, as well as (ii) within the Stand-Alone Object Identification And Attribute Information Tracking And Linking Computer System of the present invention.

A system configuration manager, which assists the system engineer or technician in simply and quickly configuring and setting-up an Object Identity And Attribute Information Acquisition System, as well as a Stand-Alone Object Identification And Attribute Information Tracking And Linking Computer System, using a novel graphical-based application programming interface (API).

A system configuration manager, wherein its API enables a systems configuration engineer or technician having minimal programming skill to simply and quickly perform the following tasks:

• (1) specify the object detection, tracking, identification and attribute acquisition capabilities (i.e. functionalities) which the system or network being designed and configured should possess;
• (2) determine the configuration of hardware components required to build the configured system or network;
• and (3) determine the configuration of software components required to build the configured system or network, so that it will possess the object detection, tracking, identification, and attribute-acquisition capabilities.

A system and method for configuring an object identification and attribute acquisition system of the present invention for use in a PLIIM-based system or network, wherein the method employs a graphical user interface (GUI) which presents queries about the various object detection, tracking, identification and attribute-acquisition capabilities to be imparted to the PLIIM-based system during system configuration, and wherein the answers to the queries are used to assist in the specification of particular capabilities of the Data Element Queuing, Handling and Processing Subsystem during system configuration process.

A method of and apparatus for measuring, in the field, the pitch and yaw angles of each slave Package Identification (PID) unit in the tunnel system, as well as the elevation (i.e. height) of each such PID unit, relative to the local coordinate reference frame symbolically embedded within the local PID unit.

Apparatus realized as angle-measurement (e.g. protractor) devices integrated within the structure of each slave and master PID housing and the support structure provided to support the same within the tunnel system, enabling the taking of such field measurements (i.e. angle and height readings) so that the precise coordinate location of each local coordinate reference frame (symbolically embedded within each PID unit) can be precisely determined, relative to the master PID unit.

An angle measurement device integrated into the structure of a PID unit by providing a pointer or indicating structure (e.g. arrow) on the surface of the housing of the PID unit, while mounting angle-measurement indicator on the corresponding support structure used to support the housing above the conveyor belt of the tunnel system.

A hand-supportable mobile-type PLIIM-based 3-D digitization device capable of producing 3-D digital data models and 3-D geometrical models of laser scanned objects, for display and viewing on a LCD view finder integrated with the housing (or on the display panel of a computer graphics workstation), wherein a single planar laser illumination beam (PLIB) and a single amplitude modulated (AM) laser scanning beam are transported through the 3-D scanning volume of the scanning device so as to optically scan the object under analysis and capture linear images and range-profile maps thereof relative to a coordinate reference system symbolically embodied within the scanning device, for subsequent reconstruction therein using computer-assisted tomographic (CAT) techniques to generate a 3-D geometrical model of the object for display, viewing and use in diverse applications.

A transportable PLIIM-based 3-D digitization device (“3-D digitizer”) capable of producing 3-D digitized data models of scanned objects, for viewing on a LCD view finder integrated with the device housing (or on the display panel of an external computer graphics workstation), wherein the object under analysis is controllably rotated through a single planar laser illumination beam (PLIB) and a single amplitude modulated (AM) laser scanning beam generated by the 3-D digitization device so as to optically scan the object and automatically capture linear images and range-profile maps thereof relative to a coordinate reference system symbolically embodied within the 3-D digitization device, for subsequent reconstruction therein using computer-assisted tomographic (CAT) techniques to generate a 3-D digitized data model of the object for display, viewing and use in diverse applications.

A transportable PLIIM-based 3-D digitizer having optically-isolated light transmission windows for transmitting laser beams from a PLIIM-based object identification subsystem and an LDIP-based object detection and profiling/dimensioning subsystem embodied within the transportable housing of the 3-D digitizer.

A transportable PLIIM-based 3-D digitization device (“3-D digitizer”) capable of producing 3-D digitized data models of scanned objects, for viewing on a LCD view finder integrated with the device housing (or on the display panel of an external computer graphics workstation), wherein a single planar laser illumination beam (PLIB) and a single amplitude modulated (AM) laser scanning beam are generated by the 3-D digitization device and automatically swept through the 3-D scanning volume in which the object under analysis resides so as to optically scan the object and automatically capture linear images and range-profile maps thereof relative to a coordinate reference system symbolically embodied within the 3-D digitization device, for subsequent reconstruction therein using computer-assisted tomographic (CAT) techniques to generate a 3-D digitized data model of the object for display, viewing and use in diverse applications.

An Internet-based remote monitoring, configuration and service (RMCS) system and method which is capable of monitoring, configuring and servicing PLIIM-based networks, systems and subsystems of the present invention using any Internet-based client computing subsystem.

An Internet-based remote monitoring, configuration and service (RMCS) system and associated method which enables a systems or network engineer or service technician to use any Internet-enabled client computing machine to remotely monitor, configure and/or service any PLIIM-based network, system or subsystem of the present invention in a time-efficient and cost-effective manner.

An Internet-based RMCS system and method, wherein the simple network management protocol (SNMP) is used to enable network management and communication between (i) SNMP agents, which are built into each node (i.e. object identification and attribute acquisition system) in the PLIIM-based network, and (ii) SNMP managers, which can be built into a LAN http/Servlet Server as well as any Internet-enabled client computing machine functioning as the network management station (NMS) or management console.

An Internet-based remote monitoring, configuration and service (RMCS) system and associated method, wherein servlets in an HTML-encoded RMCS management console are used to trigger SNMP agent operations within devices managed within a tunnel-based LAN.

An Internet-based remote monitoring, configuration and service (RMCS) system and associated method, wherein a servlet embedded in the RMCS management console can simultaneously invoke multiple methods on the server side of the network, to monitor (i.e. read) particular variables (e.g. parameters) in each object identification and attribute acquisition subsystem, and then process these monitored parameters for subsequent storage in a central MIB in the and/or display.

An Internet-based remote monitoring, configuration and service (RMCS) system and associated method, wherein a servlet embedded in the RMCS management console can invoke a method on the server side of the network, to control (i.e. write) particular variables (e.g. parameters) in a particular device being managed within the tunnel-based LAN.

An Internet-based remote monitoring, configuration and service (RMCS) system and associated method, wherein a servlet embedded in the RMCS management console can invoke a method on the server side of the network, to control (i.e. write) particular variables (e.g. parameters) in a particular device being managed within the tunnel-based LAN.

An Internet-based remote monitoring, configuration and service (RMCS) system and associated method, wherein a servlet embedded in the RMCS management console can invoke a method on the server side of the network, to determine which variables a managed device supports and to sequentially gather information from variable tables for processing and storage in a central MIB in database.

An Internet-based remote monitoring, configuration and service (RMCS) system and associated method, wherein a servlet embedded in the RMCS management console can invoke a method on the server side of the network, to detect and asynchronously report certain events to the RCMS management console.

A automatic vehicle identification (AVI) system constructed using a pair of PLIIM-based imaging and profiling subsystems taught herein.

A automatic vehicle identification (AVI) system constructed using only a single PLIIM-based imaging and profiling subsystem taught herein, and an electronically-switchable PLIB/FOV direction module attached to the PLIIM-based imaging and profiling subsystem.

An automatic vehicle classification (AVC) system constructed using a several PLIIM-based imaging and profiling subsystems taught herein, mounted overhead and laterally along the roadway passing through the AVC system.

An automatic vehicle identification and classification (AVIC) system constructed using PLIIM-based imaging and profiling subsystems taught herein.

An x-ray parcel scanning-tunnel system, wherein the interior space of packages, parcels, baggage or the like, are automatically inspected by x-radiation beams to produce x-ray images which are automatically linked to object identity information by the object identity and attribute acquisition subsystem embodied within the x-ray parcel scanning-tunnel system.

A x-ray cargo scanning-tunnel system, wherein the interior space of cargo containers, transported by tractor trailer, rail, or other by other means, are automatically inspected by x-radiation energy beams to produce x-ray images which are automatically linked to cargo container identity information by the object identity and attribute acquisition subsystem embodied within the system.

A PLIIM-equipped x-ray parcel scanning-tunnel system of the present invention operably connected to a RDBMS which is in data communication with one or more remote intelligence RDBMSs connected to the infrastructure of the Internet, wherein the interior space of packages, parcels, baggage or the like, are automatically inspected by x-radiation beams to produce x-ray images which are automatically linked to object identity information by the PLIIM-based object identity and attribute acquisition subsystem embodied within the PLIIM-equipped x-ray parcel scanning-tunnel system;

A PLIIM-equipped x-ray parcel scanning-tunnel system of a Pulsed Fast Neutron Analysis (PFNA) parcel scanning-tunnel system, wherein the interior space of packages, parcels, baggage or the like, are automatically inspected by neutron-beams to produce neutron-beam images which are automatically linked to object identity information by the object identity and attribute acquisition subsystem embodied within the PFNA parcel scanning-tunnel system.

A PLIIM-equipped Pulsed Fast Neutron Analysis (PFNA) parcel scanning-tunnel system of the present invention operably connected to a RDBMS which is in data communication with one or more remote intelligence RDBMSs operably connected to the infrastructure of the Internet, wherein the interior space of packages, parcels, baggage or the like, are automatically inspected by neutron-beams to produce neutron-beam images which are automatically linked to object identity information by the PLIIM-based object identity and attribute acquisition subsystem embodied within the PLIIM-equipped PFNA parcel scanning-tunnel system.

A Quadrupole Resonance (QR) parcel scanning-tunnel system, wherein the interior space of packages, parcels, baggage or the like, are automatically inspected by low-intensity electromagnetic radio waves to produce digital images which are automatically linked to object identity information by the object identity and attribute acquisition subsystem embodied within the PLIIM-equipped QR parcel scanning-tunnel system.

A PLIIM-equipped Quadrupole Resonance (QR) parcel scanning-tunnel system operably connected to a RDBMS which is in data communication with one or more remote intelligence RDBMSs connected to the infrastructure of the Internet, wherein the interior space of packages, parcels, baggage or the like, are automatically inspected by low-intensity electromagnetic radio waves to produce digital images which are automatically linked to object identity information by the PLIIM-based object identity and attribute acquisition subsystem embodied within the PLIIM-equipped QR parcel scanning-tunnel system.

A method of and system for securing airports, bus terminals, ocean piers, and like passenger transportation terminals employing co-indexed passenger and baggage attribute information and post-collection information processing techniques.

An improved airport security screening method, wherein streams of baggage identification information and baggage attribute information are automatically generated at the baggage screening subsystem thereof, and each baggage attribute data is automatically attached to each corresponding baggage identification data element, so as to produce a composite linked data element comprising the baggage identification data element symbolically linked to corresponding baggage attribute data element(s) received at the system, and wherein the composite linked data element is transported to a database for storage and subsequent processing, or directly to a data processor for immediate processing.

An improved airport security system comprising (i) a passenger screening station or subsystem including a PLIIM-based passenger facial and body profiling identification subsystem, a hand-held PLIIM-based imager, and a data element queuing, handling and processing (i.e. linking) computer, (ii) a baggage screening subsystem including a PLIIM-based object identification and attribute acquisition subsystem, a x-ray scanning subsystem, and a neutron-beam explosive detection subsystems (EDS), (iii) a Passenger and Baggage Attribute Relational Database Management Subsystems (RDBMS) for storing co-indexed passenger identity and baggage attribute data elements (i.e. information files), and (iv) automated data processing subsystems for operating on co-indexed passenger and baggage data elements (i.e. information files) stored therein, for the purpose of detecting breaches of security during and after passengers and baggage are checked into an airport terminal system.

A PLIIM-based (and/or LDIP-based) passenger biometric identification subsystem employing facial and 3-D body profiling/recognition techniques.

A PLIIM-based (and/or LDIP-based) passenger biometric identification subsystem employing facial and 3-D body profiling/recognition techniques, and a metal-detection subsystem, employed at a passenger screening station in the airport security system.

An Object Identification And Attribute Information Tracking And Linking Computer employed at the passenger check-in and screening station in the airport security system.

An Object Identification And Attribute Information Tracking And Linking Computer comprising:

• an input and output unit and a programmable data element queuing, handling and processing and linking subsystem, wherein each passenger identification data input (e.g. from a bar code reader or RFID reader) is automatically attached to each corresponding passenger attribute data input (e.g. passenger profile characteristics and dimensions, weight, X-ray images, etc.) generated at a passenger check-in and screening station;

A Data Element Queuing, Handling, and Processing Subsystem employed in an Object Identification and Attribute Acquisition System installed at the baggage screening station comprising:

• an input and an output unit and a programmable data element queuing, handling and processing and linking subsystem, wherein each baggage identification data input (e.g. from a bar code reader or RFID reader) is automatically attached to each corresponding baggage attribute data input (e.g. baggage profile characteristics and dimensions, weight, X-ray images, PFNA images, QRA images, etc.) generated at said baggage screening station.

A “horizontal-type” 3-D PLIIM-based CAT scanning system capable of producing 3-D geometrical models of human beings, animals, and other objects, for viewing on a computer graphics workstation, wherein a single planar laser illumination beam (PLIB) and a single amplitude modulated (AM) laser scanning beam are controllably transported horizontally through the 3-D scanning volume disposed above the support platform of the system so as to optically scan the object under analysis and capture linear images and range-profile maps thereof relative to a global coordinate reference system, for subsequent reconstruction in the computer workstation using computer-assisted tomographic (CAT) techniques to generate a 3-D geometrical model of the object.

A “horizontal-type” 3-D PLIIM-based CAT scanning system capable of producing 3-D geometrical models of human beings, animals, and other objects, for viewing on a computer graphics workstation, wherein a three orthogonal planar laser illumination beams (PLIBs) and three orthogonal amplitude modulated (AM) laser scanning beams are controllably transported horizontally through the 3-D scanning volume disposed above the support platform of the system so as to optically scan the object under analysis and capture linear images and range-profile maps thereof relative to a global coordinate reference system, for subsequent reconstruction in the computer workstation using computer-assisted tomographic (CAT) techniques to generate a 3-D geometrical model of the object.

A “vertical-type” 3-D PLIIM-based CAT scanning system capable of producing 3-D geometrical models of human beings, animals, and other objects, for viewing on a computer graphics workstation, wherein a three orthogonal planar laser illumination beams (PLIBs) and three orthogonal amplitude modulated (AM) laser scanning beams are controllably transported vertically through the 3-D scanning volume disposed above the support platform of the system so as to optically scan the object under analysis and capture linear images and range-profile maps thereof relative to a global coordinate reference system, for subsequent reconstruction in the computer workstation using computer-assisted tomographic (CAT) techniques to generate a 3-D geometrical model of the object.

A PLIIM-based object identification and attribute acquisition system wherein a high-intensity ultra-violet germicide irradiator (UVGI) unit is mounted for irradiating germs and other microbial agents, including viruses, bacterial spores and the like, while parcels, mail and other objects are being automatically identified by bar code reading and/or image lift and OCR processing by said system.

A method and apparatus, wherein a planar laser illumination beam (PLIB) is temporal intensity modulated prior to target object illumination employing visible mode-locked laser diodes (MLLDs).