发明名称 |
Objective optical element and optical pickup apparatus |
摘要 |
An objective optical element for use in an optical pickup apparatus having: a first light source for emitting a first light flux; a second light source for emitting a second light flux; an objective optical element, the objective optical element includes: an optical surface including a common area and an exclusive area; and a wavelength selective film formed on at least one of the common area and the exclusive area; wherein the common area transmits the first light flux which is formed into a converged spot on the information recording surface, and transmits the second light flux which is formed into a converged spot on the information recording surface, and the exclusive area transmits the first light flux which is formed into a converged spot on the information recording surface, and transmits the second light flux which is not formed into a converged spot on the information recording surface.
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申请公布号 |
US7512055(B2) |
申请公布日期 |
2009.03.31 |
申请号 |
US20050133349 |
申请日期 |
2005.05.20 |
申请人 |
KONICA MINOLTA OPTO, INC. |
发明人 |
HIRAYAMA HIROSHI;KIMURA TOHRU |
分类号 |
G11B7/00;G11B7/125;G11B7/135 |
主分类号 |
G11B7/00 |
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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