# US 10,481,739 B2 · Optical steering of component wavelengths of a multi-wavelength beam to enable interactivity > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,481,739 B2 - Document ID: US10481739B2 - Status: Granted - Kind: B2 - Application number: 15/044,174 - Filed: 2016-02-16 - Published: 2017-08-17 - Granted: 2019-11-19 - Earliest claimed: 2016-02-16 - Assignees: Microvision, Inc. - Applicants: Microvision, Inc. - Inventors: P. Selvan Viswanathan; Roeland Collet; George Thomas Valliath; Jari Honkanen; Matthieu Saracco - Web page: https://patentgrep.com/patent/US10481739B2 ## CPC - G06F 3/0423: {using sweeping light beams, e.g. using rotating or vibrating mirror} - G02B 27/141: {using dichroic mirrors} - G03B 17/54: with projector - G06F 3/017: {Gesture based interaction, e.g. based on a set of recognized hand gestures (interaction based on gestures traced on a digitiser G06F3/04883)} - G06F 3/0325: {using a plurality of light emitters or reflectors or a plurality of detectors forming a reference frame from which to derive the orientation of the object, e.g. by triangulation or on the basis of reference deformation in the picked up image} - H04N 9/3129: {scanning a light beam on the display screen (scanning a light beam on a screen in displays other than projection devices G09G3/02; scanning systems in general G02B26/10; projectors using laser light sources in general H04N9/3161)} - H04N 9/3173: {wherein the projection device is specially adapted for enhanced portability} - H04N 9/3194: {including sensor feedback} - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D) - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract Briefly, in accordance with one or more embodiments, an information handling system comprises a scanning system to scan one or more component wavelength beams into a combined multi-component beam in a first field of view, and a redirecting system to redirect one or more of the component wavelength beams into a second field of view. A first subset of the one or more component wavelength beams is projected in the first field of view and a second subset of the one or more component wavelength beams is projected in the second field of view. The first subset may project a visible image in the first field of view, and user is capable of providing an input to control the information handling system via interaction with the second subset in the second field of view. ## Claims ### Claim 1 An information handling system, comprising: a plurality of laser light sources configured to generate a plurality of component wavelength beams; a scanning system configured to combine the plurality of component wavelength beams into a combined multi-component beam and scan the combined multi-component beam into a scan pattern; and a redirecting system to redirect a second subset of the plurality of component wavelength beams from the combined multi-component beam into a second field of view while a first subset of the plurality of component wavelength beams is directed from the combined multi-component beam into a first field of view, wherein the redirecting system redirects the second subset of the plurality of component wavelength beams based on wavelength such that first subset of the plurality of component wavelength beams has a different wavelength distribution than the second subset of the plurality of component wavelength beams; wherein the first subset of the plurality of component wavelength beams is projected in the first field of view to provide a first function, and the second subset of the plurality of component wavelength beams is projected in the second field of view to provide a second function. ### Claim 2 (depends on 1) The information handling system as claimed in claim 1, wherein at least one of the first or the second function comprises providing a visible image, providing capability to receive an input from a user to control the information handling system, or scene acquisition, or a combination thereof. ### Claim 3 (depends on 1) The information handling system as claimed in claim 1, wherein the redirecting system comprises a beam splitter having a first surface that is transmissive for the first subset of the plurality of component wavelength beams and is reflective for the second subset of the plurality of component wavelength beams. ### Claim 4 (depends on 1) The information handling system as claimed in claim 1, wherein the first subset comprises one or more visible wavelength beams, and the second subset comprises one or more invisible wavelength beams. ### Claim 5 (depends on 1) The information handling system as claimed in claim 1, wherein the redirecting system comprises a beam splitter to allow transmission of the first subset into the first field of view, and to reflect the second subset into the second field of view. ### Claim 6 (depends on 5) The information handling system as claimed in claim 5, wherein the beam splitter has at least one filter that is transmissive for the first subset and reflective for the second subset. ### Claim 7 (depends on 1) The information handling system as claimed in claim 1, wherein the redirecting system is configured to redirect a third subset of the one or more component wavelength beams into a third field of view. ### Claim 8 (depends on 1) The information handling system as claimed in claim 1, further comprising a time of flight (TOF) system to detect a depth of an object in the second field of view to provide gesture recognition or touch input recognition, or a combination thereof. ### Claim 9 An information handling system, comprising: a plurality of laser light sources configured to generate a plurality of component wavelength beams; a scanning system configured to combine the plurality of component wavelength beams into a combined multi-component beam and scan the combined multi-component beam into a scan pattern; and a steering system to steer a second subset of the plurality of the component wavelength beams from the combined multi-component beam into a second field of view while a first subset of the plurality of component wavelength beams is directed from the combined multi-component beam into a first field of view, wherein the steering system steers the second subset of the plurality of component wavelength beams based on wavelength such that first subset of the plurality of component wavelength beams has a different wavelength distribution than the second subset of the plurality of component wavelength beams; wherein the first subset of the plurality of component wavelength beams is projected in the first field of view to provide a visible image in the first field of view, and the second subset of the plurality of component wavelength beams is projected in the second field of view to generate a depth map of the second field of view to receive an input from a user in the second field of view. ### Claim 10 (depends on 9) The information handling system as claimed in claim 9, wherein the steering system comprises a beam splitter having a first surface that is transmissive for the first subset of the plurality of component wavelength beams and is reflective for the second subset of the plurality of component wavelength beams. ### Claim 11 (depends on 9) The information handling system as claimed in claim 9, wherein the first subset comprises one or more visible wavelength beams, and the second subset comprises one or more invisible wavelength beams. ### Claim 12 (depends on 9) The information handling system as claimed in claim 9, wherein the steering system comprises a beam splitter to allow transmission of the first subset into the first field of view, and to reflect the second subset into the second field of view. ### Claim 13 (depends on 12) The information handling system as claimed in claim 12, wherein the beam splitter has at least one filter that is transmissive for the first subset and reflective for the second subset. ### Claim 14 (depends on 9) The information handling system as claimed in claim 9, wherein the steering system is configured to steer a third subset of the one or more component wavelength beams into a third field of view. ### Claim 15 (depends on 9) The information handling system as claimed in claim 9, further comprising a time of flight (TOF) system to generate the depth map of the second field of view to receive the input from the user, wherein the input from the user includes gesture recognition. ### Claim 16 A method to optically steer component wavelengths of a multi-wavelength beam, comprising: generating a plurality of component wavelength beams; combining the plurality of component wavelength beams into a multi-wavelength beam; projecting the multi-wavelength beam in a scan pattern; filtering the projected multi-wavelength beam based on wavelength to create a filtered group of one or more wavelengths and a non-filtered group of the one or more wavelengths, wherein the non-filtered group of the one or more wavelengths has at least one component wavelength different than the filtered group of the one or more wavelengths, wherein the non-filtered group of one or more wavelengths from the multi-wavelength beam are transmitted in a first direction to a first viewport to provide a first function; and redirecting the filtered group in a second direction to a second viewport; and receiving a reflected beam from the second viewport as an input signal to provide a second function. ### Claim 17 (depends on 16) The method as claimed in claim 16, wherein a user may interact with the filtered group in the second viewport to control the reflected beam without interfering with the first viewport. ### Claim 18 (depends on 16) The method as claimed in claim 16, further comprising: measuring a time of flight (TOF) of the reflected beam to yield a depth map; analyzing the depth map to extract information in the input signal as gesture or touch information, or a combination thereof. ### Claim 19 (depends on 16) The method as claimed in claim 16, wherein the non-filtered group comprises one or more visible wavelength beams to form an image in the first viewport, and the filtered group comprises one or more invisible wavelength beams to facilitate depth sensing in the second viewport.