Efficient light collector for projection display system
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United States of America Patent
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Aug 31, 2004
Grant Date -
Mar 25, 2004
app pub date -
Sep 25, 2002
filing date -
Sep 25, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A light collection for an arc lamp includes a parabolic reflector having primary and secondary parabolic reflector sections, the secondary parabolic reflector section divided into subsections, resulting in multiple arc images. The light collection system combines high efficiency and etendue preserving aperture shaping, and is particularly useful in projection display systems.
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