REPRODUCTION DEVICE AND REPRODUCTION METHOD
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United States of America Patent
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Issued Date -
Mar 11, 2010
app pub date -
Aug 10, 2009
filing date -
Sep 9, 2008
priority date (Note) -
Abandoned
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Abstract
A reproduction device includes a light-emitting unit that emits reference light and coherent light, which is generated so as to have uniform light intensity and uniform phase, onto a hologram recording medium on which data is recorded by an interference pattern of signal light and the reference light, and a light-attenuating unit that attenuates the light intensity of the coherent light.
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