Multibeam diffraction grating-based backlighting
US9128226B2 · kind B2 · utility
191Cited by
21References
17Claims
0Family size
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Key dates
| Filing date | Jun 18, 2014 |
| Grant date | Sep 8, 2015 |
| Priority date | — |
| Expiry date | Jun 18, 2034 |
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 to guide light from a light source. The multibeam diffraction grating is to couple out a portion of the guided light using diffractive coupling and to direct the coupled out portion away from the light guide as a plurality of light beams with different principal angular directions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.