发明名称 |
Zoom lens and photographing system |
摘要 |
Four-unit zoom lens in/from which a magnification changing optical unit for changing the overall focal length of the zoom lens can be inserted/removed, wherein a wobbling unit, which can be slightly amplitude-driven in the optical axis direction to detect the best imaging position, is placed in the fourth unit closer to the image than the position at which said magnification changing optical unit is inserted/removed. <IMAGE> |
申请公布号 |
EP1220001(A1) |
申请公布日期 |
2002.07.03 |
申请号 |
EP20010310870 |
申请日期 |
2001.12.24 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
TOMITA, YASUYUKI;YAKITA, SHINICHIRO |
分类号 |
G02B7/02;G02B7/04;G02B7/105;G02B13/18;G02B15/10;G02B15/167;G03B17/12 |
主分类号 |
G02B7/02 |
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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