LCD projection system
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United States of America Patent
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-
Dec 7, 2004
Grant Date -
Jul 1, 2004
app pub date -
Dec 30, 2002
filing date -
Dec 30, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A LCD projection system includes a beam splitter that splits a polarized light beam into a light of two primary colors and a light of one primary color, a first polarization element adapted to polarize the light of two primary colors, a second polarization element adapted to polarize the light of one primary color, a dichroic element adapted to separate the two colors of the light of two primary colors, a modulator adapted to modulate the light of tow primary colors and the light of one primary color and to reflect modulated light for output, a retarder provided between the first polarization element and the polarization element, and a projection lens adapted to project modularized light from the modulator and the first polarization element onto a display screen.
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