发明名称 |
Method of accessing optical recording media, optical pickup device, and optical drive using the device |
摘要 |
An optical pickup device corresponding to an optical recording medium having a plurality of recording layers, and an optical drive using the device are provided. The optical pickup device includes a collimator lens disposed between an object lens and a light source. The collimator lens adjusts a focal length with respect to the optical recording medium, and the object lens focuses light passing through the collimator lens, on the optical recording medium. The object lens is optically optimized for an upper or second-upper recording layer of the optical recording medium. |
申请公布号 |
US8416670(B2) |
申请公布日期 |
2013.04.09 |
申请号 |
US20100891072 |
申请日期 |
2010.09.27 |
申请人 |
KIM UI-YOL;LEE YONG-JAE;SEONG PYONG-YONG;TOSHIBA SAMSUNG STORAGE TECHNOLOGY KOREA CORPORATION |
发明人 |
KIM UI-YOL;LEE YONG-JAE;SEONG PYONG-YONG |
分类号 |
G11B7/135 |
主分类号 |
G11B7/135 |
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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