High refractive index waveguide for augmented reality
US11899241B2 · kind B2 · utility
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8References
18Claims
0Family size
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Key dates
| Filing date | Mar 4, 2021 |
| Grant date | Feb 13, 2024 |
| Priority date | — |
| Expiry date | Jul 3, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0172
- WIPO fieldOptics
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.