US 12,461,594 B2
Visual axis enrollment
Hao Qin, Saratoga, CA (US); Hua Gao, San Jose, CA (US); and Tom Sengelaub, Oakland, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Dec. 8, 2023, as Appl. No. 18/534,398.
Claims priority of provisional application 63/476,924, filed on Dec. 22, 2022.
Prior Publication US 2024/0211039 A1, Jun. 27, 2024
Int. Cl. G06F 3/01 (2006.01); G06F 1/16 (2006.01); G06T 7/73 (2017.01)
CPC G06F 3/013 (2013.01) [G06F 1/163 (2013.01); G06T 7/75 (2017.01); G06T 2207/30196 (2013.01)] 21 Claims
OG exemplary drawing
 
9. A method, comprising:
performing, by a controller comprising one or more processors:
causing a horizontal line of content to be displayed by a display subsystem at a known vertical location and virtual depth; and
estimating a kappa angle for an eye based at least in part on images of the eye captured by an eye-facing camera as the eye scans the line of content, wherein the kappa angle indicates a visual axis for the eye.