Light shaping for imaging using holography
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United States of America Patent
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Aug 11, 2015
Grant Date -
Sep 11, 2014
app pub date -
Mar 8, 2013
filing date -
Mar 8, 2013
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Abstract
A plurality of light sources of different wavelength bands can be provided. An imaging device can be configured to modulate incoming light according to video image data and output modulated light. A projection lens can be positioned to project the modulated light. An optical combiner can be disposed between the light sources and the imaging device. A plurality of holographic devices can each include a plurality of different holographic elements selectively positionable in a light path extending between one of the light sources and the optical combiner. Each of the holographic elements can define a light-shaping hologram. A controller can be configured to selectively position the holographic elements of the holographic devices based on the video image data.
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