Multibeam diffraction grating-based color backlighting
US10345505B2 · kind B2 · utility
43Cited by
31References
20Claims
0Family size
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Key dates
| Filing date | Dec 9, 2016 |
| Grant date | Jul 9, 2019 |
| Priority date | — |
| Expiry date | Apr 24, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N13/324
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Multibeam diffraction grating-based color backlighting includes a plate light guide, a multibeam diffraction grating at a surface of the plate light guide, and light sources laterally displaced from one another in a direction corresponding to a propagation axis of the plate light guide. The light sources produce light of different colors. The plate light guide is to guide light from the light sources. The multibeam diffraction grating is to couple out a portion of the guided light using diffractive coupling as a plurality of light beams of different colors in a plurality of different principal angular directions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.