Light source unit and projector
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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May 1, 2007
Grant Date -
May 26, 2005
app pub date -
Sep 29, 2004
filing date -
Oct 8, 2003
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The enclosed embodiments provide a light source unit and a projector with high light utilization efficiency. The unit has a light emitting part for emitting light from a planer emitting region, a reflecting metal electrode provided on one side of the light emitting part, a square pyramid prism on the other side of the light emitting part, and a bottom surface of the prism that has substantially the same size and shape as the planer emitting region. The inclined surfaces of the square pyramid prism output light that has entered the square pyramid prism from the bottom surface in a specific direction. The reflecting metal electrode reflects the light that has been reflected by the inclined surfaces and transmitted through the bottom surface of the square pyramid prism.
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