发明名称 |
Method and device for detecting the opening angle of the shutter of an adjustable rotating shutter in a film camera |
摘要 |
The invention relates to a method and a device for detecting the opening angle of the shutter (light or dark sector) of an adjustable rotating shutter ( 1 ) arranged in a film camera. Said shutter comprises a circular-segment-shaped or circular-sector shaped shutter wing ( 2 ) which is driven by a shutter motor via a shutter shaft ( 20 ), and also comprises an adjustable shutter adjustment wing ( 3 ) arranged in a coaxial manner in relation to the shutter wing ( 2 ) and which can be displaced in relation to said shutter wing by means of a shutter adjustment wing motor ( 33 ). According to the invention, the position of the shutter wing ( 2 ) and the position of the shutter adjustment wing ( 3 ) are detected during a rotation of the rotating shutter ( 1 ) and the difference between the two positions forms a value for the shutter opening angle or the light or dark sector of the rotating shutter ( 1 ).
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申请公布号 |
US7276686(B2) |
申请公布日期 |
2007.10.02 |
申请号 |
US20040505182 |
申请日期 |
2004.08.18 |
申请人 |
ARNOLD & RICHTER CINE TECHNIK GMBH & CO. BETRIEBSKG |
发明人 |
HAUBMANN MICHAEL |
分类号 |
G01D5/34;G03B9/10;G03B9/12 |
主分类号 |
G01D5/34 |
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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