Liquid crystal projection system
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United States of America Patent
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Nov 10, 2009
Grant Date -
Nov 2, 2006
app pub date -
Apr 27, 2005
filing date -
Apr 27, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A liquid crystal projection system has a dichroic mirror, a reflecting prism, a first and a second polarizing component, a dichroic component, a modulating device, and a projection lens. The dichroic mirror splits a polarized light source into dual primary color lights and a single primary color light. The reflecting prism receives the single primary color light and reflects it. The first and second polarizing components polarize the dual primary color lights and the single primary color light, respectively. The dichroic component is disposed beside the first polarizing component, and splits the dual primary color lights. The modulating device is disposed beside the second polarizing component and the dichroic component, and modulates the dual and single primary color lights into the other polarization and then reflects them. The projection lens is disposed beside the first polarizing component, and project the output light beam to a screen.
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