Angle multiplexing holographic storage device and method
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United States of America Patent
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Mar 20, 2007
Grant Date -
Jan 5, 2006
app pub date -
Jun 27, 2005
filing date -
Jun 30, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In an angle multiplexing holographic storage device, a movable beam splitter is used for splitting a source beam into an object beam and a reference beam. An encoding device is used for encoding the object beam with pixel data. A parabolic reflector differentially reflects the reference beam with the movement of the movable beam splitter. A holographic storage medium is arranged at the focal point of the parabolic reflector and made to lie in the optical path of the encoded object beam so that the differentially reflected reference beams encounter and interfere with the encoded object beam at the same site of the holographic storage medium to form and record various interference patterns.
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