发明名称 |
Method and apparatus for optical head and optical information reproducing |
摘要 |
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. |
申请公布号 |
US2004120245(A1) |
申请公布日期 |
2004.06.24 |
申请号 |
US20030731599 |
申请日期 |
2003.12.08 |
申请人 |
HITACHI, LTD. |
发明人 |
ARIKAWA KOUJI;NAKAMURA SHIGERU;SHIGEMATSU KAZUO |
分类号 |
G11B7/135;G11B7/00;G11B7/12;G11B7/125;G11B7/13;(IPC1-7):G11B7/135 |
主分类号 |
G11B7/135 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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