Phosphor based illumination system having a short pass reflector and method of making same
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United States of America Patent
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Apr 1, 2008
Grant Date -
Aug 16, 2007
app pub date -
Apr 20, 2007
filing date -
Jun 30, 2004
priority date (Note) -
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Abstract
An illumination system including a light source, a light guide including an output surface, a first interference reflector positioned between the light source and the output surface of the light guide, and emissive material positioned between the first interference reflector and the output surface of the light guide is disclosed. The light source emits light having a first optical characteristic. The first interference reflector substantially transmits light having the first optical characteristic and substantially reflects light having a second optical characteristic. The emissive material emits light having the second optical characteristic when illuminated with light having the first optical characteristic.
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