发明名称 |
Camera with power zoom function and interchangeable lens with power zoom function with a time-controlled lens positioning feature |
摘要 |
A camera system includes a zoom driving mechanism driven by a motor for varying the focal length of a lens, a detecting device for detecting the focal length of the lens, and a controller for automatically stopping the motor after a predetermined time period from the time when the detecting means detects the fact that the focal length of the taking lens reaches a telephoto end or a wide-angle end.
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申请公布号 |
US5231437(A) |
申请公布日期 |
1993.07.27 |
申请号 |
US19920958456 |
申请日期 |
1992.10.07 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
KASHIYAMA, RITSUO;KATAOKA, HIROYUKI |
分类号 |
G02B7/10;G03B17/14 |
主分类号 |
G02B7/10 |
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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