发明名称 |
Aperture control mechanism |
摘要 |
An abutment pin is provided for defining the fully open position of the aperture release member on an interchangeable lens. The aperture drive member on the camera is biased toward the abutment pin so that the rest position of the drive member will always correspond to a fully open aperture regardless of lens misalignment. The aperture stop down is then controlled by measuring the movement of the drive member from its rest, or start, position.
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申请公布号 |
US4396272(A) |
申请公布日期 |
1983.08.02 |
申请号 |
US19810320148 |
申请日期 |
1981.11.10 |
申请人 |
ASAHI KOGAKU KOGYO KABUSHIKI KAISHA |
发明人 |
SHONO, TETSUJI;KUREI, HIROSHI |
分类号 |
G03B7/095;G03B7/08;G03B7/085;G03B7/20;G03B9/02;G03B9/06;G03B9/07;(IPC1-7):G03B9/02 |
主分类号 |
G03B7/095 |
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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