Patent ID: 11906743
Assignee: SNAP INC.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 15:
16. A method for projecting light via an augmented reality or virtual reality display device, comprising:
projecting light from a first projector;
directing the light from the first projector toward a first input diffractive optical element positioned in or on at least one waveguide assembly having at least one waveguide in a direction that is at a first angle to a waveguide normal vector;
coupling the light from the first projector into at the least one waveguide;
projecting light from a second projector;
directing the light from the second projector toward a second input diffractive optical element positioned in or on the at least one waveguide assembly in a direction that is at a second angle to the waveguide normal vector;
coupling the light from the second projector into the at least one waveguide; and
coupling light out of the at least one waveguide towards a notional viewing position via an output diffractive optical element positioned in or on the at least one waveguide assembly;
wherein the output diffractive optical element is configured to couple light out of the at least one waveguide in a first range of angles for light from the first projector and in a second range of angles for light from the second projector, wherein the first range of angles and the second range of angles are different but are partially overlapping; and
wherein the first and second angles are angled respectively away from the output diffractive optical element.