# US 2023/0273678 A1 · Eye glint imaging in see-through computer display systems > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0273678 A1 - Document ID: US20230273678A1 - Status: Published application - Kind: A1 - Application number: 18/304,303 - Filed: 2023-04-20 - Published: 2023-08-31 - Earliest claimed: 2014-01-21 - Assignees: Mentor Acquisition One, LLC - Applicants: Mentor Acquisition One, LLC - Inventors: John N. BORDER - Web page: https://patentgrep.com/patent/US20230273678A1 ## CPC - G06F 3/013: {Eye tracking input arrangements (G06F3/015 takes precedence)} - G02B 5/045: {Prism arrays} - G02B 27/0093: {with means for monitoring data relating to the user, e.g. head-tracking, eye-tracking} - G02B 27/017: {Head mounted} - G02B 27/0172: {characterised by optical features} - G02B 27/0179: {Display position adjusting means not related to the information to be displayed} - G02B 27/0189: {Sight systems} - G06F 1/163: {Wearable computers, e.g. on a belt} - G06F 1/1686: {the I/O peripheral being an integrated camera} - G06F 3/005: {Input arrangements through a video camera} - G06F 3/011: {Arrangements for interaction with the human body, e.g. for user immersion in virtual reality (blind teaching G09B21/00)} - G06F 3/012: {Head tracking input arrangements} - G06F 3/016: {Input arrangements with force or tactile feedback as computer generated output to the user} - G06F 3/03545: {Pens or stylus} - G06T 19/006: {Mixed reality (object pose determination, tracking or camera calibration for mixed reality G06T7/00)} - G06V 20/20: in augmented reality scenes - G06V 30/1423: {the instrument generating sequences of position coordinates corresponding to handwriting (preprocessing or recognising digital ink G06V30/32)} - G06V 40/19: Sensors therefor - G06V 40/193: {Preprocessing; Feature extraction} - G09G 3/003: {to produce spatial visual effects} - G09G 5/003: {Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto (specific for a CRT G09G1/165; for a flat panel G09G3/2092)} - G09G 5/10: Intensity circuits - G02B 2027/0118: {comprising devices for improving the contrast of the display / brillance control visibility} - G02B 2027/0127: {comprising devices increasing the depth of field} - G02B 2027/0138: {comprising image capture systems, e.g. camera} - G02B 2027/014: {comprising information/image processing systems} - G02B 2027/0178: {Eyeglass type (eyeglass details G02C)} - G02B 2027/0187: {slaved to motion of at least a part of the body of the user, e.g. head, eye} - G02C 7/086: {Auxiliary lenses located directly on a main spectacle lens or in the immediate vicinity of main spectacles} - G02C 11/10: {Electronic devices other than hearing aids} - G09G 5/028: {Circuits for converting colour display signals into monochrome display signals} - G09G 2320/0242: Compensation of deficiencies in the appearance of colours - G09G 2320/0626: for control of overall brightness - G09G 2354/00: Aspects of interface with display user - G09G 2360/144: the light being ambient light - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL - G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) - G02C: SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES (trial frames for testing the eyes A61B3/04; goggles or eyeshields not having the same features as spectacles A61F9/00) ## Abstract Disclosure herein concerns a method that includes illuminating a user's eye with an illumination source in a head-worn display, capturing an image of the user's eye with an eye camera in the head-worn display, wherein the image includes an eye glint produced by light from the illumination source that is reflected from a surface of the user's eye, determining a size of an eye glint in the captured image, and identifying a change in focus distance for the user's eye in correspondence with a change in the size of the eye glint. ## Claims ### Claim 1 A wearable head device comprising: a see-through display configured to present content to an eye of a user of the wearable head device, such that presenting the content to the eye produces an eye glint; one or more sensors; and one or more processors configured to perform a method comprising: capturing, via the one or more sensors, an image of the eye glint; determining, based on the image of the eye glint, a level of sharpness associated with the content; in accordance with a determination that the level of sharpness is below a threshold, increasing the level of sharpness; and in accordance with a determination that the level of sharpness is not below the threshold, forgoing increasing the level of sharpness. ### Claim 2 (depends on 1) The wearable device of claim 1, wherein the method further comprises: capturing, via the one or more sensors, an image of the iris of the eye; and determining a gaze location of the user based on the image of the eye glint and further based on the image of the iris. ### Claim 3 (depends on 2) The wearable device of claim 2, wherein increasing the level of sharpness is performed further in accordance with a determination of the gaze location relative to the see-through display. ### Claim 4 (depends on 2) The wearable device of claim 2, further comprising a wearable device optic configured to provide the content to the see-through display, wherein increasing the level of sharpness comprises adjusting a focus of the wearable device optic. ### Claim 5 (depends on 1) The wearable device of claim 1, wherein the see-through display comprises a first region corresponding to a central region of the see-through display and a second region corresponding to a peripheral region of the see-through display. ### Claim 6 (depends on 5) The wearable device of claim 5, wherein the method further comprises determining whether a gaze location of the user is associated with the first region, wherein increasing the level of sharpness is performed further in accordance with a determination that the gaze location is associated with the first region. ### Claim 7 (depends on 5) The wearable device of claim 5, wherein the method further comprises determining whether a gaze location of a user is associated with the second region, wherein forgoing increasing the level of sharpness is performed further in accordance with a determination that the gaze location is associated with the second region. ### Claim 8 A method comprising: presenting, via a see-through display of a wearable head device, content to an eye of a user of the wearable head device, such that presenting the content to the eye produces an eye glint; capturing, via one or more sensors of the wearable head device, an image of the eye glint; determining, based on the image of the eye glint, a level of sharpness associated with the content; in accordance with a determination that the level of sharpness is below a threshold, increasing the level of sharpness; and in accordance with a determination that the level of sharpness is not below the threshold, forgoing increasing the level of sharpness. ### Claim 9 (depends on 8) The method of claim 8, further comprising: capturing, via the one or more sensors, an image of the iris of the eye; and determining a gaze location of the user based on the image of the eye glint and further based on the image of the iris. ### Claim 10 (depends on 9) The method of claim 9, wherein increasing the level of sharpness is performed further in accordance with a determination of the gaze location relative to the see-through display. ### Claim 11 (depends on 9) The method of claim 9, wherein increasing the level of sharpness comprises adjusting a focus of a wearable device optic, the wearable device optic configured to provide the content to the see-through display. ### Claim 12 (depends on 8) The method of claim 8, wherein the see-through display comprises a first region corresponding to a central region of the see-through display and a second region corresponding to a peripheral region of the see-through display. ### Claim 13 (depends on 12) The method of claim 12, wherein the method further comprises determining whether a gaze location of the user is associated with the first region, wherein increasing the level of sharpness is performed further in accordance with a determination that the gaze location is associated with the first region. ### Claim 14 (depends on 12) The method of claim 12, wherein the method further comprises determining whether a gaze location of the user is associated with the second region, wherein forgoing increasing the level of sharpness is performed further in accordance with a determination that the gaze location is associated with the second region. ### Claim 15 A non-transitory computer-readable medium storing instructions which, when executed by one or more processors, cause the one or more processors to perform a method, comprising: presenting, via a see-through display of a wearable head device, content to an eye of a user of the wearable head device, such that presenting the content to the eye produces an eye glint; capturing, via one or more sensors of the wearable head device, an image of the eye glint; determining, based on the image of the eye glint, a level of sharpness associated with the content; in accordance with a determination that the level of sharpness is below a threshold, increasing the level of sharpness; and in accordance with a determination that the level of sharpness is not below the threshold, forgoing increasing the level of sharpness. ### Claim 16 (depends on 15) The non-transitory computer-readable medium of claim 15, wherein the method further comprises: capturing, via the one or more sensors, an image of the iris of the eye; and determining a gaze location of the user based on the image of the eye glint and further based on the image of the iris. ### Claim 17 (depends on 16) The non-transitory computer-readable medium of claim 16, wherein increasing the level of sharpness is performed further in accordance with a determination of the gaze location relative to the see-through display. ### Claim 18 (depends on 16) The non-transitory computer-readable medium of claim 16, wherein increasing the level of sharpness comprises adjusting a focus of a wearable device optic, the wearable device optic configured to provide the content to the see-through display. ### Claim 19 (depends on 15) The non-transitory computer-readable medium of claim 15, wherein the see-through display comprises a first region corresponding to a central region of the see-through display and a second region corresponding to a peripheral region of the see-through display. ### Claim 20 (depends on 19) The non-transitory computer-readable medium of claim 19, wherein the method further comprises determining whether a gaze location of the user is associated with the first region or the second region, wherein increasing the level of sharpness is performed further in accordance with a determination that the view target is associated with the first region, and wherein forgoing increasing the level of sharpness is performed further in accordance with a determination that the view target is associated with the second region.