发明名称 |
A beam shaping device, an optical head, and a master disk recording apparatus |
摘要 |
A beam shaping device (103) shapes a light beam from a light source to have a circular cross section, and changes the refractive index thereof by causing an electric field to be produced by a voltage applied to electrodes (110,111) thereof. In this way, the light beam from the light source is deflected, and an objective lens gather the shaped and deflected light beam to expose an optical disk. <IMAGE>
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申请公布号 |
EP1469464(A2) |
申请公布日期 |
2004.10.20 |
申请号 |
EP20040008759 |
申请日期 |
2004.04.13 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
ABE, SHINYA;ITO, EIICHI |
分类号 |
G02B27/09;G02B3/00;G02F1/29;G11B7/00;G11B7/085;G11B7/125;G11B7/135;G11B7/26;(IPC1-7):G11B7/125 |
主分类号 |
G02B27/09 |
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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