Mirror and aperture based color phase detector for use in a multimedia projection system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Nov 5, 2002
Grant Date -
N/A
app pub date -
Jul 28, 2000
filing date -
Jul 28, 2000
priority date (Note) -
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Abstract
A multimedia projector employing a color wheel housed within a shroud uses a light guide that is integral with the shroud and formed as an aperture extending through the shroud to transmit light from the color wheel to a photo detector that detects a particular color or colors of light to provide an index mark signal to a display controller to synchronize red, green, and blue image data with the associated color wheel filter segments. A reflector is located at an exit end of the light guide to reflect the light through a dichroic filter positioned on the shroud toward the photo detector on a circuit board.
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