Light source incorporating a high temperature ceramic composite and gas phase for selective emission
US8044567B2 · kind B2 · utility
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24References
8Claims
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Key dates
| Filing date | Mar 31, 2006 |
| Grant date | Oct 25, 2011 |
| Priority date | — |
| Expiry date | Nov 3, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/0808
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light source includes a base, a light-transmissive envelope coupled to the base, a composition disposed within the light-transmissive envelope, and a gas phase contained by the envelope for suppressing vaporization of the composition at operating temperatures greater than about 2000 Kelvin. The composition includes a first region and a second region and operable to suppress or reflect photons having a wavelength greater than about 700 nm and to emit or transmit photons having a wavelength between about 400 nm and about 700 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.