Waveguide-type display apparatus
US12332448B2 · kind B2 · utility
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1References
19Claims
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Key dates
| Filing date | May 16, 2022 |
| Grant date | Jun 17, 2025 |
| Priority date | — |
| Expiry date | Nov 14, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0075
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A display apparatus includes a waveguide; an input coupler on the waveguide and configured to introduce light containing an image into the waveguide; and an output coupler on the waveguide and configured to output light traveling in the waveguide to the outside of the waveguide, wherein the output coupler includes a plurality of first diffraction grating elements arranged apart from each other and configured to diffract a first light portion in a first wavelength band among the light traveling in the waveguide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.