Digital light processing projector
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United States of America Patent
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Jan 24, 2012
Grant Date -
Mar 4, 2010
app pub date -
Jan 13, 2009
filing date -
Aug 26, 2008
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A DLP projector includes a light source generating white light beams, a color wheel separating the white light beams into three colored light beams, an integration rod rendering the colored light beams uniform, a projection lens, a DMD, a light-shade and a light-absorbing member. When a light beam on a first path is in use, a micro mirror of the DMD reflects the light beam on the first path to follow a second path towards the projection lens. Otherwise, the micro mirror reflects the light beam on the first path to follow a third, fourth and fifth path out of the projection lens. The light-shade is positioned in a light path of the light beam out of the projection lens. The light-absorbing member is under the light-shade and absorbs the light beam on the fifth path, the light beam on a sixth and a seventh path reflected by the light-shade.
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