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1. 发明授权

US3603781A Foldable strobo discharge flash system 失效
标题翻译：可折叠扫描放映系统
公开(公告)号：US3603781A
公开(公告)日：1971-09-07
申请号：US3603781D
申请日：1969-04-15
申请人： MINOLTA CAMERA KK
发明人： KOBAYASHI TATSUO , FUJII YOSHIFUSA , UEDA HIROSHI
IPC分类号： G03B15/05 , G03B15/02
CPC分类号： G03B15/05 , G03B2215/051 , Y10S362/802
摘要： A foldable strobo discharge flash system comprising a cylindrical strobo discharge tube and a reflecting mirror forming a cylindrical curved surface which has the discharge tube at its focal line and is made of flexible and elastic metal plate so as to be folded compactly. One of the edges of the flexible reflecting plate is set on a movable frame member supporting the strobo discharge tube and the curvature of the reflecting plate is varied in coordinating with the operation of the movable frame member. At a full open state of the movable frame member the reflecting plate becomes a reflecting mirror for the strobo discharge tube and at a closed state the reflecting plate is folded flat. Further, the power switch of the strobo discharge tube is turned on or off in coordinating with the operation of the movable frame member.

2. 发明授权

US3914776A Shutter control device 失效
标题翻译：快门控制装置
公开(公告)号：US3914776A
公开(公告)日：1975-10-21
申请号：US4537870
申请日：1970-06-11
申请人： MINOLTA CAMERA KK
发明人： TSUJIMOTO KAYOSHI , YATA KINTARO , FUJII YOSHIFUSA , UEDA HIROSHI , MATSUDA MOTONOBU
IPC分类号： G03B7/083 , G03B7/08
CPC分类号： G03B7/083
摘要： A shutter control device comprises three timing circuits and a switching circuit, and in a first timing circuit a first capacitor is charged by photoconductive current generated by a photoconductive cell. The switching circuit is controlled by the voltage of the first capacitor. A second timing circuit has a second capacitor the charging of which is actuated by the switching circuit simultaneously with the actuation of the first timing circuit and is charged as a function of the delay of the first timing circuit. A third timing circuit has a third capacitor and a shorting switch opened in response to the shutter opening after the first capacitor is charged to a predetermined level. The switching circuit triggers shutter closing through an electromagnet when the third capacitor is charged to the voltage equal to that of the second capacitor.
摘要翻译：快门控制装置包括三个定时电路和开关电路，并且在第一定时电路中，第一电容器由光导电池产生的光电流充电。开关电路由第一电容器的电压控制。第二定时电路具有第二电容器，其充电由开关电路同时与第一定时电路的致动一起被驱动，并且作为第一定时电路的延迟的函数被充电。第三定时电路在第一电容器被充电到预定电平之后，具有响应于快门打开而打开的第三电容器和短路开关。当第三电容器被充电到等于第二电容器的电压时，开关电路通过电磁体触发快门关闭。

3. 发明授权

US3668994A Automatic diaphragm aperture adjusting device for flash photography in camera with interchangeable lens 失效
标题翻译：自动透镜光圈调整装置，用于可互换镜头的相机中的闪光摄影
公开(公告)号：US3668994A
公开(公告)日：1972-06-13
申请号：US3668994D
申请日：1969-11-24
申请人： MINOLTA CAMERA KK
发明人： FUJII YOSHIFUSA
IPC分类号： G03B7/00 , G03B7/16 , G03B9/02 , G03B17/14
CPC分类号： G03B7/003
摘要： A diaphragm aperture adjusting device automatically detects the displacement of the inner cylinder of an interchangeable lens which is set to a distance value for focusing. The diaphragm aperture of the lens is automatically controlled to the value in accordance with the displacement of the inner lens cylinder by adjusting members for flash photography provided in the camera body. When various interchangeable lenses with different axial displacements are employed, the adjustment to compensate for the difference is made to provide proper aperture values.

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