Cross dichroic prism and projection display apparatus equipped with cross dichroic prism
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United States of America Patent
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Sep 18, 2007
Grant Date -
Nov 9, 2006
app pub date -
Mar 17, 2006
filing date -
Sep 19, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
A cross dichroic prism color-synthesizes a plurality of color lights having entered therein separately and emits color-synthesized light to a projection lens. The cross dichroic prism includes a first dichroic film; and a second dichroic film intersecting the first dichroic film so as to pass through the first dichroic film. The cross dichroic prism is configured so that a color light having entered the cross dichroic prism and having become diffracted at a gap created in the first dichroic film over an area where the second dichroic film passes through the first dichroic film is not projected through the projection lens.
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Cited Art Landscape
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