Method and apparatus for optical head and optical information reproducing
US7209416B2 · kind B2 · utility
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1Claims
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Key dates
| Filing date | Apr 14, 2005 |
| Grant date | Apr 24, 2007 |
| Priority date | — |
| Expiry date | Nov 17, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2007/0006
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical head for reproducing information contained on an optical information disk includes a plurality of light sources and a plurality of light receiving elements in correspondence with the plurality of laser light sources. There is constructed a constitution in which one laser light source in the plurality of laser light sources is constituted by an individual laser diode and which includes a laser module constituted by other laser light sources and the plurality of light receiving elements to thereby enable to realize the small size of the optical head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.