| 发明名称 |
Compact telephoto zoom lens system |
| 摘要 |
A compact high-performance zoom lens system having thirteen lens elements grouped into ten lens components with a rear half of the fourth lens group composed of three lens elements.
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| 申请公布号 |
US4468098(A) |
申请公布日期 |
1984.08.28 |
| 申请号 |
US19820422501 |
申请日期 |
1982.09.23 |
| 申请人 |
ASAHI KOGAKU KOGYO KABUSHIKI KAISHA |
发明人 |
ITOH, TAKAYUKI |
| 分类号 |
G02B15/167;G02B9/64;G02B15/173;(IPC1-7):G02B9/64;G02B15/14 |
主分类号 |
G02B15/167 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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