Multibeam diffraction grating-based backlighting
US10830939B2 · kind B2 · utility
33Cited by
18References
19Claims
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Key dates
| Filing date | Feb 7, 2019 |
| Grant date | Nov 10, 2020 |
| Priority date | — |
| Expiry date | Feb 7, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/1866
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Multibeam diffraction grating-based backlighting includes a light guide and a multibeam diffraction grating at a surface of the light guide. The light guide is configured to guide light from a light source. The multibeam diffraction grating is configured to couple out a portion of the guided light using diffractive coupling and to direct the diffractively coupled out portion away from the light guide as a plurality of light beams with different principal angular directions having directions corresponding to view directions of a multiview display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.