SOLID STATE LIGHTING DEVICE WITH REDUCED LUMINOUS FLUX DROP AT ELEVATED TEMPERATURE
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United States of America Patent
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Issued Date -
Aug 6, 2015
app pub date -
Jan 31, 2014
filing date -
Jan 31, 2014
priority date (Note) -
Abandoned
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Abstract
A solid state light emitting device includes a solid state light emitter and a lumiphoric material that are selected for use with one another to provide light emissions with improved (i.e., reduced) thermal droop A solid state emitter having a short peak emission wavelength (e.g., in a visible range at or below 440 nm) seemingly less than optimal at room temperature for use with a particular lumiphor can trigger more efficient stimulation of lumiphor emissions at high temperatures. Enhanced epitaxial structures also inhibit decrease of radiant flux by LEDs at elevated temperatures.
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