Reflective illuminating optical system
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United States of America Patent
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Feb 6, 2007
Grant Date -
Oct 7, 2004
app pub date -
Apr 2, 2004
filing date -
Apr 4, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A reflective illuminating optical system on silicon, more particularly, to an illuminating optical system is provided, in which R, G, and B signals reflected from a LCoS panel (Liquid Crystal on Silicon panel) in a projection system do not pass through wire grid type PBSs (Polarized Beam Splitters) but are reflected by the wire grid type PBSs (Polarized Beam Splitters) so that astigmatism is suppressed and illuminating efficiency is improved.
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