发明名称 |
AUTOMATIC SHUTTER-DIAPHRAGM |
摘要 |
<p>In a program shutter having a sector which is opened and closed by a step motor, there is provided a home position detection means for detecting whether or not the sector is positioned in a home position. Before and after an exposure operation, it is detected whether or not the sector is positioned in the home position, and if the sector is not positioned in the home position, the step motor is reversely rotated to complete the closing movement of the sector.</p> |
申请公布号 |
GB2158601(B) |
申请公布日期 |
1988.01.27 |
申请号 |
GB19850011099 |
申请日期 |
1985.05.01 |
申请人 |
* SEIKO KOKI KABUSHIKI KAISHA |
发明人 |
MASUO * OGIHARA;HAJIME * ODA;YOICHI * SEKI;HIROSHI * YAMAZAKI |
分类号 |
G03B7/097;G03B7/091;G03B9/24;(IPC1-7):G03B7/097 |
主分类号 |
G03B7/097 |
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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