Waveguide type display apparatus
US11988829B2 · kind B2 · utility
1Cited by
1References
23Claims
0Family size
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Key dates
| Filing date | Jul 8, 2021 |
| Grant date | May 21, 2024 |
| Priority date | — |
| Expiry date | May 24, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/4255
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A waveguide type display apparatus is provided. This waveguide type display apparatus includes a waveguide through which an image proceeds and a leakage image reducer configured to reduce emission of a leakage image leaked from the waveguide without total internal reflection in the waveguide, from among images, to the outside by a volume grating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.