Optical information recording and reproducing device, optical information recording and reproducing method
US9761263B2 · kind B2 · utility
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16Claims
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Assignee
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Key dates
| Filing date | Dec 12, 2012 |
| Grant date | Sep 12, 2017 |
| Priority date | — |
| Expiry date | Apr 4, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/1395
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.