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

Claim 18:
19. A head-mounted display (HMD), 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 HMD to illuminate an eye;
a camera disposed on the eyeward side of the HMD, wherein the camera is configured to capture images of the eye;
an optical combiner disposed between the array of light sources and the eyeward side, wherein the optical combiner is configured 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;
a display layer disposed between the optical combiner and a backside of the HMD, the display layer configured to provide display light that propagates through the optical combiner to the eyeward side of the HMD; 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.