| 发明名称 |
Reproducing objective lens for videodiscs |
| 摘要 |
A reproducing objective lens for videodiscs comprising five single lenses for which the working distance is large and flatness of field and resolving power are high.
|
| 申请公布号 |
US4286848(A) |
申请公布日期 |
1981.09.01 |
| 申请号 |
US19790006327 |
申请日期 |
1979.01.25 |
| 申请人 |
DISCOVISION ASSOCIATES |
发明人 |
MICKLESON, LEE |
| 分类号 |
G02B13/00;G02B13/24;G02B21/02;G11B7/135;(IPC1-7):G02B9/60 |
主分类号 |
G02B13/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
