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US 11,899,241 B2Granted
High refractive index waveguide for augmented reality
AssigneeHuawei Technologies Co., Ltd.
InventorsGangok Lee, Zhiqiang Liu, Wei Zhou, Akash Arora, Angus Wu
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Abstract
Disclosed is an Augmented Reality (AR) optical waveguide. The AR optical waveguide includes a transparent substrate including a user proximate surface and a user distal surface. The AR optical waveguide also includes a slant etched diffractive grating included on the user distal surface of the transparent substrate. The slant etched diffractive grating includes a refractive index of greater than or equal to 2.0.
Claims18
An Augmented Reality (AR) optical waveguide comprising:
- 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), and wherein the slant etched diffractive grating includes zinc peroxide (ZnO2).
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).
5 more elements
Dependencies are inferred from the claim text.