Reflector shapes for light emitting diode-polarized light sources
US7766495B2 · kind B2 · utility
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3Claims
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Key dates
| Filing date | Jun 24, 2008 |
| Grant date | Aug 3, 2010 |
| Priority date | — |
| Expiry date | Jan 31, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B19/0061
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light-emitting device including a light source that exhibits polarization anisotropy and a reflector that is shaped so that for light emitted in at least two directions from the light source, the angle between the dominant polarization directions after reflecting from the reflector is smaller than the angle between the dominant polarization directions before reflecting from the reflector. In the light-emitting device the light source may be a light-emitting diode chip or one of a plurality of light sources.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.