发明名称 |
Objective lens, optical pickup-device equipped with same and assembling method of same |
摘要 |
An objective lens is made up of a light-source-side lens and a medium-side lens wherein at least either one of rim portions of respective opposing surfaces of the light-source-side lens and the medium-side lens forms a rise-up section projected towards the other lens, the rim portion which forms the rise-up section and the rim portion of the other lens at least partially contact one another, and these two lens are fixed together by an adhesive resin layer formed in a spacing between the respective rim portions. With the foregoing structure, an objective lens made up of a pair of lenses which has high rigidity as a whole and is capable of high speed recording and reproducing by suppressing adverse effects of resonance can be realized.
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申请公布号 |
US2002005996(A1) |
申请公布日期 |
2002.01.17 |
申请号 |
US20010875695 |
申请日期 |
2001.06.06 |
申请人 |
KITAMURA KAZUYA;KURATA YUKIO;IWAKI TETSUO |
发明人 |
KITAMURA KAZUYA;KURATA YUKIO;IWAKI TETSUO |
分类号 |
G02B7/02;G02B13/18;G11B7/135;G11B7/22;(IPC1-7):G02B7/02 |
主分类号 |
G02B7/02 |
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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