Optical information recording/reproducing apparatus
US8913474B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 2, 2014 |
| Grant date | Dec 16, 2014 |
| Priority date | — |
| Expiry date | Apr 2, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/1381
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical information recording/reproducing apparatus for recording information on a recording medium and/or reproducing information from the recording medium, includes: a laser light source for performing recording and/or reproducing information; a shielding part, using a liquid crystal, that can switch between transmission and interception of laser light emitted from the laser light source; a driving circuit for driving the switching between transmission and interception of the shielding part; a moving part for relatively moving the shielding part and the laser light; and a controlling circuit for controlling the moving part. The moving part relatively moves the shielding part and the laser light so as to switch a region to which the laser light is applied from a first region of the shielding part to a second region thereof different from the first region, in order to prevent the liquid crystal from deteriorating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.