Aberration correcting apparatus, optical pickup, and aberration correcting method
US7764586B2 · kind B2 · utility
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2References
12Claims
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Key dates
| Filing date | Mar 29, 2006 |
| Grant date | Jul 27, 2010 |
| Priority date | — |
| Expiry date | Aug 28, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2007/0006
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A kind of an optical disc is discriminated by a disc discriminating section, an order of aberrations to be corrected is set by an order setting section by the kind of the optical disc, drive of a liquid crystal optical element is controlled by a drive control section through a liquid crystal driver, and an aberration of an optical beam is corrected based on the order of the aberration. The level of importance of the aberration correction differs by the kind of the optical disc, and the order of the aberration is set by the level of importance of the aberration correction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.