High speed, high efficiency optical pattern generator using rotating optical elements
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United States of America Patent
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Jan 20, 2009
Grant Date -
Feb 21, 2008
app pub date -
Sep 4, 2007
filing date -
Dec 31, 2003
priority date (Note) -
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Abstract
An optical pattern generator includes one or more multi-faceted rotating optical elements that introduce an offset that is rotation insensitive. The component that generates the offset is rotationally symmetric around the rotational axis of the optical element. Thus, as the optical element rotates, the effect of the offset component does not change. In addition, rotating optical elements may be designed to counteract unwanted optical effects of each other.
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