发明名称 |
OPTICAL PICKUP, OPTICAL INFORMATION RECORDING METHOD, AND OPTICAL DISK DEVICE |
摘要 |
<p>The recording accuracy of information on an optical disc is increased. An information optical system (150) of an optical disc apparatus (110) enables a semiconductor laser (3) to sequentially output specific peak light (LEP) and specific slope light (LES) as an information light beam (LM) and enables the correction lens (162) to change the divergence angle of the specific peak light (LEP) so that an absorption change area (RA) by the specific peak light (LEP) can be positioned at a far position in the recording layer (101). Thus, it is possible to form an energy concentration area (RE) by the specific slope light (LES) in the vicinity of a target position (QG), and the recording accuracy of information on the optical disc (100) can be increased.</p> |
申请公布号 |
EP2214168(A1) |
申请公布日期 |
2010.08.04 |
申请号 |
EP20090817934 |
申请日期 |
2009.10.01 |
申请人 |
SONY CORPORATION |
发明人 |
SAITO, KIMIHIRO;OGI, SHIORI;FUJITA, GORO |
分类号 |
G11B7/125;G11B7/0045;G11B7/09;G11B7/135 |
主分类号 |
G11B7/125 |
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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