Holographic optical information reproducing apparatus
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United States of America Patent
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Apr 14, 2009
Grant Date -
Feb 17, 2005
app pub date -
Jul 8, 2004
filing date -
Jul 8, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
It is an object of the invention to provide an optical information reproducing apparatus and an optical information storing/reproducing apparatus which utilize holography, wherein noise due to reference light is reduced than in conventional apparatuses. An optical system in which arrangement is made so that at least part of a light path of reference light for reproduction is redundant with a light path of reproduction light, and a means to let through the reproduction light and shut out reflected light of the reference light for reproduction, which is reflected by a storage medium on the redundant path are provided.
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