Patent ID: 11933975
Assignee: META PLATFORMS TECHNOLOGIES, LLC
Field: Optics (Instruments)
Classification: CPC G | IPC F  G

Claim 18:
19. A method for relaying an image of an eye of a user, the method comprising:
receiving, at a first optical element, a first ray, from an eye, having a first circular polarization and impinging on the first optical element in a first direction and directing the first ray to a second direction;
receiving, at the first optical element, a second ray, from the eye, having a second circular polarization that is distinct from the first circular polarization and impinging on the first optical element in the first direction and directing the second ray to a third direction distinct from the second direction so that one of the first ray or the second ray propagates through an optical waveguide via total internal reflection and the other of the first ray or the second ray is transmitted through the optical waveguide; and
steering, with a second optical element, a ray propagating through the optical waveguide for exiting from the optical waveguide.