| 发明名称 |
Complex optical element and optical pickup |
| 摘要 |
A complex optical element includes a first optical portion and a second optical portion which are made of materials different from each other. The second optical portion is bonded to an optical functional face of the first optical portion. A concavoconvex face part is formed at the central part of the bond area between the first optical portion and the second optical portion.
|
| 申请公布号 |
US7920455(B2) |
申请公布日期 |
2011.04.05 |
| 申请号 |
US20070889674 |
申请日期 |
2007.08.15 |
| 申请人 |
PANASONIC CORPORATION |
发明人 |
HAYASHI KATSUHIKO;MURATA JUN;TANAKA YASUHIRO;YAMAGATA MICHIHIRO |
| 分类号 |
G11B7/00;G11B7/135 |
主分类号 |
G11B7/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
