发明名称 |
Optical pickup |
摘要 |
<p>When recording/reading information data onto/from a recording medium (2) by irradiating the recording medium (2) with a first light beam, correction for decreasing the amount of spherical aberration is made just before the recording or reading. On the other hand, when recording/reading information data onto/from a recording medium by irradiating the recording medium with a second light beam, focus correction for correctly condensing the reflected light from the recording medium on the light receiving surface of a photodetector is made just before the recording or reading.</p> |
申请公布号 |
EP1536418(A2) |
申请公布日期 |
2005.06.01 |
申请号 |
EP20040027550 |
申请日期 |
2004.11.19 |
申请人 |
PIONEER CORPORATION |
发明人 |
SATO, MAKOTO;OGASAWARA, MASAKAZU;KIKUCHI, IKUYA;KOIKE, KATSUHIRO |
分类号 |
G11B7/135;G11B7/09;G11B7/00;G11B7/125;(IPC1-7):G11B7/125 |
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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