发明名称 |
Zoom lens and photographing system |
摘要 |
In a zoom lens in/from which a magnification changing optical unit for changing an overall focal length of the zoom lens can be inserted/removed, wherein a wobbling unit which can be slightly amplitude-driven in an optical axis direction to detect a best imaging position is placed closer to an image side than an insertion position of said magnification changing optical unit.
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申请公布号 |
US6965481(B2) |
申请公布日期 |
2005.11.15 |
申请号 |
US20010032767 |
申请日期 |
2001.12.27 |
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;(IPC1-7):G02B15/14;G03B17/00 |
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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