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

Claim 0:
1. An eye-tracking method, comprising:
enabling at least one light source of an array of light sources to emit non-visible light that propagates through an optical combiner to an eyeward side of an eye-tracking system to illuminate an eye, wherein the optical combiner is configured as a holographic optical element or a volume hologram to direct reflected non-visible light that is reflected by the eye to a camera disposed on the eyeward side of the eye-tracking system, and wherein the optical combiner is positioned on an optical axis between each light source of the array of light sources and the eye;
obtaining at least one image of the eye with the camera while the at least one light source is enabled; and
determining 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 determining that the at least one image indicates a bright pupil condition when the at least one light source was enabled.