LIGHT EMITTING DEVICE
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United States of America Patent
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Issued Date -
May 3, 2012
app pub date -
Oct 31, 2011
filing date -
Nov 2, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A light emitting device includes a light source capable of emitting emission light, a first phosphor layer and an optical waveguide. A first phosphor layer has at least a first surface and a second surface on an opposite side of the first surface, extends in a light guiding direction, and is capable of absorbing the emission light and emitting first wavelength converted light having a longer wavelength than the emission light. The optical waveguide has a reflector. And the optical waveguide has an input surface of the emission light, a reflection surface being in contact with the first surface of the first phosphor layer and provided on a surface of the reflector, and an output surface spaced from the first phosphor layer. The reflection surface and the output surface extend in the light guiding direction.
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