US 7,548,274 B2Granted

Coplanar camera scanning system

AssigneeAccu-Sort Systems, Inc.

InventorsEdward I. Chaleff, Thomas J. Brobst, Richard J. Skokowski, Jr.

Life of this patent

Estimating the term…

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Abstract

A system for scanning objects having at least two linear array sensors, adapted to detect light input signals, is provided. A lens is optically connected to each of the linear array sensors, and are adapted to receive and transmit an optical image located in a respective lens field of view along a respective lens axis to the respective one of the at least two linear array sensor. A light source which generates an illumination stripe in general linear alignment with the lens axis across a depth of the field of view is provided. A cylindrical lens is positioned between the light source and an object to be scanned. The cylindrical lens adapted to collect, transmit and focus light from the light source to form the illumination stripe. This arrangement provides a wider system field of view with generally more uniform resolution.

Claims9

Dependent claims

A large depth of field system located over a moving surface which carries objects to be scanned through an object scanning area, comprising:

a linear array sensor adapted to detect light input signals;
a sensor lens optically connected to the linear array sensor, the lens being adapted to receive and transmit an optical image located in an optical field of view to the linear array sensor;
a light source comprising a housing having four side walls, at least one linear row of LEDs located at a fifth wall of the housing, and a Fresnel lens that is spaced apart from and positioned to receive a generally unobstructed light output of the LEDs located at a sixth wall of the housing, opposite the fifth wall, to produce an illumination plane that has a height that extends over a depth of field and a width that extends across the field of view so that an illumination stripe is formed on a surface of the object traveling through the field of view;
and the illumination plane and the field of view of the linear array sensor are coplanar over the depth of field in the object scanning area.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 11/165,602Filed 23 Jun 2005 · continuation
Priority: 17 Mar 2000
Published: US 2006/0098433 A111 May 2006
Granted: 16 Jun 2009
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

H04N 1/02815
For picture information pick-up: means for illuminating the original, not specific to a particular type of pick-up head
G06K 7/10722
Fixed beam scanning: photodetector array or CCD scanning
G06K 7/10732
Photodetector array or CCD scanning: light sources
H04N 1/02865
Using an elongated light source, e.g. tubular lamp, LED array: using an array of light sources or a combination of such arrays, e.g. an LED bar

Family

Application60/190,273Us provisional application · filed 17 Mar 2000
Application09/810,204Parent of this continuation · filed 16 Mar 2001
Application10/676,834Parent of this continuation-in-part · filed 30 Sep 2003
Application10/982,820Parent of this continuation · filed 5 Nov 2004
US 2006/0098433 A1Pre-grant publication · published 11 May 2006
US 6,912,076 B2Parent of this continuation
US 6,856,440 B2Parent of this continuation-in-part
Application10/982,820Parent of this continuation-in-part
US 6,628,445 B2Parent of this continuation
Application10/676,834Parent of this continuation
US 2001/0035489 A1Published application
US 2004/0201875 A1Published application
US 2005/0094236 A1Published application
US 7,548,274 B2This patent

From the US filing history. Foreign family members aren’t listed.