Phosphor based light sources having a reflective polarizer
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United States of America Patent
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Aug 15, 2006
Grant Date -
Aug 5, 2004
app pub date -
Jan 20, 2004
filing date -
Jan 27, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
A LED package includes an LED that emits excitation light and an optically transparent body. A layer of phosphor material is positioned to receive the excitation light and is disposed on or in the optically transparent body. The phosphor material emits visible light when illuminated with the excitation light. A reflective polarizer layer is disposed on or in the optically transparent body and is positioned to receive the emitted visible light.
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