Method of imaging using a liquid crystal display device
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United States of America Patent
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Jun 5, 2001
Grant Date -
N/A
app pub date -
Mar 29, 1999
filing date -
Oct 27, 1994
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Binary optics are used in an illumination system to provide a method of imaging for a color projection display. In one embodiment a broad spectrum light source illuminates a multilevel optical phase element which disperses the broad spectrum light from the light source by diffraction. A display having a number of pixel elements, each capable of transmitting a predetermined spectral region, is positioned within the near field region of the multilevel optical phase element so as to receive the light dispersed by the multilevel phase element.
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