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发明名称
物镜装置,光学拾取装置及光碟片驱动装置
摘要
本发明揭示一种物镜装置。该装置包含:一具有一第一数值孔径的第一物镜,其能够将一雷射光聚焦在一具有第一厚度之第一覆盖层的第一光学记录媒体上;一具有小于第一数值孔径之第二数值孔径的第二物镜,其能够将该雷射光聚焦在一具有大于第一厚度之第二厚度之第二覆盖层的第二光学记录媒体上;一具有小于第二数值孔径之第三数值孔径的第三物镜,其能够将该雷射光聚焦在一具有大于第二厚度之第三厚度之第三覆盖层的第三光学记录媒体上;以及一透镜架,其会固持该第一物镜、该第二物镜、以及该第三物镜。
申请公布号
TW200811853
申请公布日期
2008.03.01
申请号
TW096114240
申请日期
2007.04.23
申请人
新力股份有限公司
发明人
山本健二;西纪彰
分类号
G11B7/135(2006.01)
主分类号
G11B7/135(2006.01)
代理机构
代理人
陈长文
主权项
地址
日本
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