US 11,698,527 B2
Capacitance-based eye tracker
Jae-Hyun Chung, Seattle, WA (US); Vigneshwar Sakthivelpathi, Seattle, WA (US); and Sang-gyeun Ahn, Seattle, WA (US)
Assigned to University of Washington, Seattle, WA (US)
Filed by University of Washington, Seattle, WA (US)
Filed on Apr. 22, 2022, as Appl. No. 17/727,644.
Claims priority of provisional application 63/179,045, filed on Apr. 23, 2021.
Prior Publication US 2022/0350137 A1, Nov. 3, 2022
Int. Cl. G02B 27/01 (2006.01); A61B 3/10 (2006.01); A61B 3/113 (2006.01); G02B 27/00 (2006.01)
CPC G02B 27/0093 (2013.01) [G02B 27/0101 (2013.01); A61B 3/113 (2013.01); G02B 2027/0132 (2013.01); G02B 2027/0187 (2013.01)] 29 Claims
OG exemplary drawing
 
1. An eye-tracking system, comprising:
at least one vertical capacitance sensor, configured to measure the vertical position of a cornea of a user's eye by sensing a position of an eyeball and an eyelid of the user; and
at least one horizontal capacitance sensor, configured to measure the horizontal position of the cornea of the user's eye by sensing a position of the user's eyeball,
wherein the horizontal and vertical sensors are rotated up to 45 degrees clockwise to increase sensitivity to eye movement.