System and method for reducing visible speckle in a projection visual display system
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United States of America Patent
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May 21, 2013
Grant Date -
Jan 26, 2012
app pub date -
Oct 3, 2011
filing date -
Jul 2, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
The disclosure provides an apparatus for reducing speckle in a projection visual display (PVD) system, a method of reducing visible speckle in a PVD system and a PVD system incorporating the method or apparatus. In one embodiment, the apparatus includes a diffuser interposable in an optical path of a PVD system and a diffuser actuator having a single drive axis configured to cause the diffuser to travel in a Lissajous curve at least partially transverse to the optical path.
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