发明名称 |
Objective lens and optical pickup device |
摘要 |
An objective lens for converging light onto an information recording medium includes a refracting interface for converging an incident light into a convergent light, and a refractive index varying member disposed between the refracting interface and the information recording medium, and having a refractive index that is varied according to an externally applied voltage.
|
申请公布号 |
US2004047268(A1) |
申请公布日期 |
2004.03.11 |
申请号 |
US20030655349 |
申请日期 |
2003.09.05 |
申请人 |
PIONEER CORPORATION |
发明人 |
YANAGISAWA TAKUMA;SATO MAKOTO |
分类号 |
G02F1/03;G02B3/00;G02F1/13;G11B7/00;G11B7/135;(IPC1-7):G11B7/135 |
主分类号 |
G02F1/03 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|