发明名称 |
Zoom lens having a cam mechanism |
摘要 |
A zoom lens includes a cam barrel having first and second cam grooves formed on an inner peripheral surface thereof; and first and second lens frames having first and second cam followers, respectively engaged with the first and the second cam grooves. The cam dead end of the first cam groove and the second cam follower insertion opening of the second cam groove are formed at the same circumferential position. Upon assembly, the first cam follower is inserted into the first leading section via a first cam follower insertion opening, and the second cam follower is inserted into the second leading section via a second cam follower insertion opening.
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申请公布号 |
US6456445(B2) |
申请公布日期 |
2002.09.24 |
申请号 |
US20010774114 |
申请日期 |
2001.01.31 |
申请人 |
ASAHI KOGAKU KOGYO KABUSHIKI KAISHA |
发明人 |
NOMURA HIROSHI;AOKI NOBUAKI;YAMAZAKI YOSHIHIRO;NAKAMURA SATORU |
分类号 |
G03B13/36;G02B7/04;G02B7/10;G02B7/28;(IPC1-7):G02B15/14;G02B9/08;G02B17/00 |
主分类号 |
G03B13/36 |
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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