发明名称 |
Optical pick-up apparatus, light converging optical system of optical pick-up apparatus, and optical information recording and reproducing method |
摘要 |
<p>An optical pickup apparatus for recording and/or reproducing information for an optical information recording medium having a plurality of information recording layers, comprising: a light source to emit a light flux; and a converging optical system to converge the light flux emitted from the light source onto each information recording layer of the plurality of information recording layers. The converging optical system converges a light flux having an image side-numerical aperture of 1.0 or more onto the each information recording layer so as to conduct recording and/or reproducing information for the each information recording layer.</p> |
申请公布号 |
EP1244102(A2) |
申请公布日期 |
2002.09.25 |
申请号 |
EP20020005893 |
申请日期 |
2002.03.14 |
申请人 |
KONICA CORPORATION |
发明人 |
MATSUI, TAKUMI |
分类号 |
G02B13/00;G11B7/135;G11B7/00;G11B7/004;G11B7/09;G11B7/12;G11B7/125;(IPC1-7):G11B7/135 |
主分类号 |
G02B13/00 |
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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