Patent ID: 11927766
Assignee: META PLATFORMS TECHNOLOGIES, LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 14:
15. A method of eye tracking comprising:
directing, with a first optical element carried by a lens assembly, scene light into a lens assembly and around an image sensor positioned within the lens assembly;
receiving, with a second optical element carried by theft lens assembly, the scene light;
directing, with the second optical element, the scene light towards an eyebox;
transmitting, through the second optical element, infrared reflected light from the eyebox to the image sensor, wherein the second optical element is positioned between the eyebox and the image sensor; and
receiving, with the image sensor, the reflected light from the second optical element,
wherein the second optical element includes a dichroic layer configured to redirect the scene light and transmit the reflected light to at least partially conceal the image sensor from an eye in the eyebox.