US 12,105,280 B2
Method and device for eye tracking using event camera data
Branko Petljanski, San Jose, CA (US); Raffi A. Bedikian, Mountain View, CA (US); Daniel Kurz, Sunnyvale, CA (US); Thomas Gebauer, Munich (DE); and Li Jia, Beijing (CN)
Assigned to APPLE INC., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Oct. 7, 2022, as Appl. No. 17/961,963.
Application 17/961,963 is a continuation of application No. 17/481,272, filed on Sep. 21, 2021, granted, now 11,474,348.
Application 17/481,272 is a continuation of application No. 16/651,228, granted, now 11,150,469, issued on Oct. 19, 2021, previously published as PCT/US2018/053143, filed on Sep. 27, 2018.
Claims priority of provisional application 62/564,875, filed on Sep. 28, 2017.
Prior Publication US 2023/0314798 A1, Oct. 5, 2023
Int. Cl. G02B 27/00 (2006.01); G02B 27/01 (2006.01); G06F 3/01 (2006.01)
CPC G02B 27/0093 (2013.01) [G02B 27/0101 (2013.01); G02B 27/0172 (2013.01); G02B 27/0179 (2013.01); G06F 3/013 (2013.01); G02B 2027/0138 (2013.01); G02B 2027/014 (2013.01); G02B 2027/0187 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A method comprising:
emitting light according to a modulation characteristic from one or more light sources towards an eye;
receiving, from an event camera, an event message in response to detecting a change in an intensity of the emitted light reflected by the eye; and
determining an eye tracking characteristic based on the event message and the modulation characteristic.