| 发明名称 |
Optical pickup device and correcting element used in the optical pickup device |
| 摘要 |
An optical pickup device wherein at least a high density disc such as HD-DVD is compatible with DVD, and securing an amount of light is compatible with correction of chromatic aberration. An a correcting element representing an optical system used for the aforementioned optical pickup device.
|
| 申请公布号 |
US7304935(B2) |
申请公布日期 |
2007.12.04 |
| 申请号 |
US20040976845 |
申请日期 |
2004.11.01 |
| 申请人 |
KONICA MINOLTA OPTO, INC. |
发明人 |
IKENAKA KIYONO;SAITO SHINICHIRO;ATARASHI YUICHI |
| 分类号 |
G11B7/00;G11B7/125;G11B7/135 |
主分类号 |
G11B7/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
