Apparatus and methods relating to precision of control illumination exposure
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United States of America Patent
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Mar 31, 2009
Grant Date -
Nov 29, 2007
app pub date -
Sep 14, 2006
filing date -
Sep 26, 2003
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Abstract
Illumination exposure control systems comprising reflective pixelated spatial light modulators that reflect substantially all of the light impinging on them into at least two different light paths. At least one of the light paths acts as a propagating light path and transmits the light beam out of the lighting system. At least one other light path acts as a non-propagating light path and prevents the light beam from being transmitted out the system. The illumination exposure control systems provide high speed of exposure actuation and precision control of exposure duration and frequency or exposure sequences.
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