发明名称 |
Interchangeable lens barrel with signal transfer contacts |
摘要 |
An interchangeable lens barrel includes connection terminals on a part of the lens barrel for sending and receiving electrical signals to and from a photographic apparatus. The lens barrel part is provided with a mechanism for protecting the connection terminals by covering the terminals when the lens barrel is removed from the photographic apparatus. When the lens barrel is mounted on the photographic apparatus, the protecting mechanism is retracted from the terminals to allow for connection with corresponding terminals on the photographic apparatus.
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申请公布号 |
US4448509(A) |
申请公布日期 |
1984.05.15 |
申请号 |
US19820416136 |
申请日期 |
1982.09.09 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
KATSUMA, MAKOTO;KAMATA, SHIGERU;SAITO, SYUICHIRO;KAWAMURA, MASAHARU;AKASHI, AKIRA |
分类号 |
G03B17/14;(IPC1-7):G03B17/00 |
主分类号 |
G03B17/14 |
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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