Illumination apparatus and projector
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United States of America Patent
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Jun 11, 2013
Grant Date -
Jan 20, 2011
app pub date -
Dec 19, 2008
filing date -
Apr 7, 2008
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An illumination apparatus includes a light source, a polarization splitter disposed facing the light source at about 45 degrees with respect to its light emission direction, a first reflector reflecting and condensing one of the polarization light components polarized and split by the polarization splitter, a quarter wave plate disposed between the polarization splitter and the first reflector, a second reflector reflecting and condensing the other of the polarization light components polarized and split by the polarization splitter, a third reflector disposed around the light source and reflecting the other polarization light reflected by the second reflector and the polarization splitter and proceeding in the light source direction, and a quarter wave plate disposed between the polarization splitter and the third reflector and around the light source, the light reflected at the first reflector and reflected at the polarization splitter being used to illuminate a predetermined surface.
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International Classification(s)
Cited Art Landscape
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