Projection apparatus and image adjustment method
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United States of America Patent
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Dec 4, 2012
Grant Date -
Sep 22, 2011
app pub date -
Mar 16, 2010
filing date -
Mar 16, 2010
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A projection apparatus including an illumination system, a light valve, and a color filtering module is provided. The illumination system is capable of emitting an illumination beam. The light valve is disposed in the transmission path of the illumination beam and capable of converting the illumination beam into an image beam. The color filtering module is disposed in the transmission path of the illumination beam between the illumination system and the light valve and includes a plurality of colored filters and a gray filter. The gray filter is capable of reducing the intensity of the illumination beam passing through the gray filter. An image adjustment method is also provided.
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