发明名称 |
DIAFRAGMASLUITER VOOR EEN EENOGIGE SPIEGELREFLEXCAMERA. |
摘要 |
<p>An exposure control system for a single-lens reflex camera. The system incorporates a shutter having a normally open status for camera viewing and focusing. An exposure cycle is commenced upon energization of a solenoid which drives a shutter to a closed position. This solenoid is deenergized to commence an exposure interval and reenergized to terminate the interval of exposure. During the latter energization, the camera is converted from an exposure operational mode to a viewing and focusing mode.</p> |
申请公布号 |
NL177524(B) |
申请公布日期 |
1985.05.01 |
申请号 |
NL19710012024 |
申请日期 |
1971.09.01 |
申请人 |
POLAROID CORPORATION TE CAMBRIDGE, MASSACHUSETTS, VER. ST. V. AM. |
发明人 |
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分类号 |
G03B7/081;(IPC1-7):G03B7/083 |
主分类号 |
G03B7/081 |
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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