High-power white LEDs and manufacturing method thereof
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United States of America Patent
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Feb 15, 2011
Grant Date -
May 22, 2008
app pub date -
Dec 22, 2006
filing date -
Nov 17, 2006
priority date (Note) -
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Abstract
A light emitting apparatus has a radiation source for emitting short wavelength radiation. A down conversion material receives and down converts at least some of the short wavelength radiation emitted by the radiation source and back transfers a portion of the received and down converted radiation. An optic device adjacent the down conversion material at least partially surrounds the radiation source. The optic device is configured to extract at least some of the back transferred radiation. A sealant substantially seals a space between the radiation source and the optic device.
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