Patent ID: 11874467
Assignee: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION, SEJONG CAMPUS
Field: Optics (Instruments)
Classification: CPC G | IPC F  G

Claim 12:
13. An augmented reality display, comprising:
a projector configured to provide light related to an image; and
a waveguide device outputting at least some of the light,
wherein the waveguide device comprises a waveguide and a diffractive optical structure disposed on one face of the waveguide, and
the diffractive optical structure comprises an extension grating disposed on the one face, and an output grating disposed to overlap at least some area of the extension grating along an axis perpendicular to the one face,
wherein the diffractive optical structure further comprises an input grating disposed in a remaining area of the extension grating and receiving the light from the projector.