发明名称 |
Objective lens collision preventing device and method for manufacturing the same |
摘要 |
The collision preventing device is used for an optical pickup device for recording or reproducing information to or from an optical information recording medium. The collision preventing device has a shock absorbing layer to prevent a contact of an objective lens and a surface of the recording medium. The shock absorbing layer is laminated on the portion extending from the circumferential edge of the effective-diameter area of the objective lens to the outside edge or to the outside of the objective lens and has a thickness in such a manner that the shock absorbing layer comes in contact with the surface of the recording medium prior to the effective-diameter area, when the objective lens comes close to the surface of the recording medium.
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申请公布号 |
US2002105736(A1) |
申请公布日期 |
2002.08.08 |
申请号 |
US20020046538 |
申请日期 |
2002.01.16 |
申请人 |
MAEDA TAKANORI;KIKUCHI IKUYA;ARAKI YOSHITSUGU |
发明人 |
MAEDA TAKANORI;KIKUCHI IKUYA;ARAKI YOSHITSUGU |
分类号 |
G02B7/02;G11B7/12;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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