Polarized synthesization in projection type liquid crystal displays
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United States of America Patent
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-
Apr 6, 1993
Grant Date -
N/A
app pub date -
Oct 5, 1990
filing date -
Oct 5, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A projection type liquid crystal display (LCD) system having a light source, a light separation device for separating light from the light source into color components, a liquid crystal light valve for modulating light from the light separation device, a light synthesizing device for synthesizing the modulated light from the liquid crystal light valve, and a projection lens for projecting light from the light synthesizing device. A polarizing beam splitter is arranged in the optical path between the light source and the light separation device to separate the incident light into two polarized light components having perpendicular polarization directions relative to each other and a polarizing conversion device converts the separated polarized light components to have the same polarization direction and transmits them from the conversion device in spatial parallel relation to the liquid crystal light valve.
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