Optical information recording and reproducing device, optical information recording and reproducing method
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United States of America Patent
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Sep 12, 2017
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app pub date -
Dec 12, 2012
filing date -
Dec 12, 2012
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Abstract
An optical information recording and reproducing device that records information on a recording medium and/or reproduces information on the recording medium, using holography is configured to include a laser light source that performs irradiation with laser light, a first light-shielding portion which is capable of switching between transmission and shielding of laser light emitted from the laser light source, and a driving circuit that drives the switching between transmission and shielding of the first light-shielding portion, and a first movement portion that moves the first light-shielding portion.
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