US 12,265,223 B2
Compact eye-tracked head-mounted display
Hong Hua, Tucson, AZ (US); and Chunyu Gao, Tucson, AZ (US)
Assigned to ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIVERSITY OF ARIZONA, Tucson, AZ (US); and AUGMENTED VISION INC., Tucson, AZ (US)
Filed by ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIVERSITY OF ARIZONA, Tucson, AZ (US); and AUGMENTED VISION, INC, Tucson, AZ (US)
Filed on Oct. 29, 2021, as Appl. No. 17/514,335.
Application 17/514,335 is a continuation of application No. 17/160,492, filed on Jan. 28, 2021, granted, now 11,181,746.
Application 17/160,492 is a continuation of application No. 16/821,207, filed on Mar. 17, 2020, granted, now 10,969,592, issued on Apr. 6, 2021.
Application 16/821,207 is a continuation of application No. 15/850,692, filed on Dec. 21, 2017, granted, now 10,606,080, issued on Mar. 31, 2020.
Application 15/850,692 is a continuation of application No. 15/446,134, filed on Mar. 1, 2017, granted, now 10,613,328, issued on Apr. 7, 2020.
Application 15/446,134 is a continuation of application No. 14/372,292, granted, now 9,720,232, issued on Aug. 1, 2017, previously published as PCT/US2013/022918, filed on Jan. 24, 2013.
Claims priority of provisional application 61/699,493, filed on Sep. 11, 2012.
Claims priority of provisional application 61/687,607, filed on Apr. 27, 2012.
Claims priority of provisional application 61/632,441, filed on Jan. 24, 2012.
Prior Publication US 2022/0050299 A1, Feb. 17, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G02B 27/01 (2006.01); G02B 5/04 (2006.01); G02B 17/08 (2006.01); G02B 27/00 (2006.01); G06F 3/01 (2006.01)
CPC G02B 27/0172 (2013.01) [G02B 5/04 (2013.01); G02B 17/086 (2013.01); G02B 17/0896 (2013.01); G02B 27/0093 (2013.01); G02B 27/017 (2013.01); G06F 3/013 (2013.01); G02B 2027/011 (2013.01); G02B 2027/0138 (2013.01); G02B 2027/0187 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An eye-tracked head-mounted display for displaying an image to an exit pupil thereof for viewing by a user, comprising:
an infra-red (IR) illumination source having an illumination optical axis associated therewith;
a freeform prism lens in optical communication with the illumination source configured to receive light from the illumination source through a first surface of the freeform prism lens and configured to transmit the light received to the exit pupil; and
an eyetracking sensor having a sensor optical axis associated therewith distinct from the illumination optical axis, the sensor optical axis extending through the freeform prism lens from the exit pupil to the sensor, the sensor located proximate the first surface of the freeform prism lens to receive optical radiation reflected from a user's eye positioned at the exit pupil and transmitted through the freeform prism lens along the sensor optical path to the sensor, wherein the illumination optical axis and the sensor optical axis are tilted with respect to one another and intersect one another at the exit pupil and wherein the illumination optical axis and the sensor optical axis intersect the first surface of the freeform prism lens at different locations of the first surface.