Light source incorporating a high temperature ceramic composite and gas phase for selective emission
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United States of America Patent
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Oct 25, 2011
Grant Date -
Oct 11, 2007
app pub date -
Mar 31, 2006
filing date -
Mar 31, 2006
priority date (Note) -
Expired
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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.
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