Patent ID: 11933977
Assignee: SNAP INC.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 7:
8. A method of operating a display device including a display, a light emitter configured to emit both a non-visible light and a visible light, an optical waveguide directly coupled to the light emitter by a single optical coupler and configured to receive and communicate both the non-visible light and the visible light, wherein the visible light is configured to be coupled to the display, and an optical device coupled to the optical waveguide and configured to receive the non-visible light and direct a non-visible light beam to a user's eye, the method comprising:
directing, with the optical device, the non-visible light beam toward a user's eye;
directing the visible light to the display, and
determining a gaze direction of the user's eye using the non-visible light beam.