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21. 发明授权

US5323196A Photographic camera for panoramic size exposures using unidirectional masking blades 失效
标题翻译：用于全景尺寸曝光的摄影照相机使用单向掩蔽刀片
公开(公告)号：US5323196A
公开(公告)日：1994-06-21
申请号：US21443
申请日：1993-02-24
申请人： Peter Labaziewicz
发明人： Peter Labaziewicz
IPC分类号： G03B1/50 , G03B17/02
CPC分类号： G03B1/50
摘要： A photographic camera capable of taking interspersed full size and panoramic size exposures comprises a rectangular back frame opening for forming a full size exposure on a film in the camera, and respective masking blades supported for pivotal movement to a masking position for masking an upper rectangular portion and a lower rectangular portion of the back frame opening to allow only a panoramic size exposure to be formed on the film and to a non-masking position not masking the upper and lower portions to preclude a panoramic size exposure from being formed on the film. According to the invention, the masking blades have respective extension means at which they are supported for pivotal movement for moving the masking blades in only one direction from their non-masking position to their masking position and to return the masking blades in only one direction, different than the first-mentioned direction, to their non-masking position.
摘要翻译：能够拍摄散布的全尺寸和全景尺寸曝光的照相机包括用于在照相机中的胶片上形成全尺寸曝光的矩形后框架开口，以及用于枢转运动到遮蔽位置的相应遮蔽片，用于遮蔽上矩形部分以及后框架开口的下矩形部分，以仅允许在胶片上形成全景尺寸曝光以及不遮蔽上部和下部的非掩蔽位置，以防止在胶片上形成全景尺寸曝光。根据本发明，掩蔽刀片具有相应的延伸装置，在该延伸装置处，它们被支撑用于枢转运动，用于仅将遮蔽刀片从其非掩蔽位置一个方向移动到其掩蔽位置，并且仅使一个方向返回掩蔽刀片，不同于首先提到的方向，到它们的非掩蔽位置。

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