System for controlling contrast in projection displays
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United States of America Patent
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Jul 20, 1999
Grant Date -
N/A
app pub date -
Jul 24, 1997
filing date -
Jul 24, 1997
priority date (Note) -
Expired
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Abstract
An optical projection system has a display cell that is configured to project a display image in response to light striking the display cell. The system has a light source that is configured to project a beam of light and a lens array that is positioned to intercept the beam and generate multiple beamlets of the beam. An aperture assembly is positioned to intercept the beamlets and is configured to selectively control which portions of the images contained in the beamlets strike the display cell.
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