发明名称 |
Optical element and optical pickup apparatus |
摘要 |
The present invention provides an optical element for use in an optical pickup apparatus. The optical element includes: a first lens section and a second lens section formed in one body. The first lens section includes an optical surface divided by a border defined by a first predetermined diameter into a first inner area and a first outer area. The surface-normal angle of the first inner area at an outer edge thereof is larger than that of the first outer area at an inner edge thereof. The second lens section includes an optical surface divided by a border defined by a second predetermined diameter into a second inner area and a second outer area. The surface-normal angle of the second inner area at an outer edge thereof is smaller than that of the second outer area at an inner edge thereof.
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申请公布号 |
US2008101166(A1) |
申请公布日期 |
2008.05.01 |
申请号 |
US20070975544 |
申请日期 |
2007.10.19 |
申请人 |
KONICA MINOLTA OPTO, INC. |
发明人 |
IKENAKA KIYONO |
分类号 |
G11B11/00;G11B7/00;G11B7/135 |
主分类号 |
G11B11/00 |
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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