Patent ID: 11899241
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 9:
10. An Augmented Reality (AR) system, comprising:
an AR port; and
an AR optical waveguide configured to receive AR input from the AR port, the AR optical waveguide including:
a transparent substrate including a user proximate surface and a user distal surface; and
a slant etched diffractive grating included on the user distal surface of the transparent substrate, wherein the slant etched diffractive grating includes a refractive index of greater than or equal to 2.0 and has a thickness of less than 200 nanometers (nm),

wherein the AR optical waveguide is configured to combine the AR input with received light to create coupled light, and
wherein the slant etched diffractive grating includes zinc peroxide (ZnO2).