| 发明名称 |
Optical scanning device |
| 摘要 |
An optical scanning device has a three element compound objective lens where a dual lens objective lens system is combined with a solid immersion lens to form an ultra high numerical aperture compound objective lens capable of reading from different information layers in a multilayer optical record carrier.
|
| 申请公布号 |
US6568594(B1) |
申请公布日期 |
2003.05.27 |
| 申请号 |
US20010913440 |
申请日期 |
2001.08.14 |
| 申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
HENDRIKS BERNARDUS HENDRIKUS WILHELMUS;MARTYNOV YOURI |
| 分类号 |
G11B7/24;G11B7/00;G11B7/085;G11B7/09;G11B7/12;G11B7/135;G11B11/105;(IPC1-7):G06K7/10;G06K7/14 |
主分类号 |
G11B7/24 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
