Patent ID: 11867900
Assignee: META PLATFORMS TECHNOLOGIES, LLC
Field: Computer technology (Electrical engineering)
Classification: CPC G  H  Y | IPC G  H

Claim 9:
10. An eye-tracking system, comprising:
an array of light sources, wherein each light source of the array of light sources is configured to be selectively enabled to emit non-visible light to an eyeward side of the eye-tracking system to illuminate an eye;
a camera disposed on the eyeward side of the eye-tracking system, wherein the camera is configured to capture images of the eye based on the non-visible light;
an optical combiner disposed on an optical axis between each light source of the array of light sources and the eye on the eyeward side of the eye-tracking system, wherein the optical combiner is configured as a holographic optical element or a volume hologram to receive reflected non-visible light that is reflected by the eye and to direct the reflected non-visible light to the camera to generate the images of the eye; and
a computing device communicatively coupled to the array of light sources and the camera, wherein the computing device comprises:
a light source control module configured to enable at least one light source of the array of light sources;
a camera interface module configured to obtain at least one image of the eye, captured by the camera while the at least one light source was enabled;
a bright pupil detection module configured to detect whether the at least one image indicates a bright pupil condition; and
a position determination module configured to determine a position of the eye based on a position of the at least one light source within the array of light sources in response to the bright pupil detection module determining that the at least one image indicates the bright pupil condition.