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    • 3. 发明授权
    • Electromagnetic shutter release device for cameras
    • 电磁快门释放装置
    • US4350427A
    • 1982-09-21
    • US38247
    • 1979-05-11
    • Kiyoshi KitaiYukio MorinoShogo KatoMasanori Watanabe
    • Kiyoshi KitaiYukio MorinoShogo KatoMasanori Watanabe
    • G03B9/08G03B9/14G03B9/24G03B17/40G03B9/64G03B7/08
    • G03B9/14G03B17/40
    • An electromagnetic shutter release device is provided with an electromagnet including an armature. A control circuit including two delay circuits are connected to the electromagnet for energizing same for a first period upon the initiation of the shutter release operation and thereafter energizing same for a second period upon the initiation of the exposure operation. The armature is mounted for movement to a first position during the first period, movement into a second position between the first and second periods and maintaining of same in the second position in the second period and into a third position after the second period. The movement of the armature from the first to the second position initiates the exposure operation and the movement of the armature from the second to the third position initiates the aperture closing operation which in turn begins the energization of the electromagnet during the second period whereupon the armature is maintained in position. As a result, a device is obtained which is technically and economically advantageous since it uses a single electromagnetic assembly for two purposes.
    • 电磁快门释放装置设置有包括电枢的电磁体。 包括两个延迟电路的控制电路连接到电磁体,用于在开始快门释放操作时的第一周期激励电磁体,并且此后在曝光操作开始时对第二周期进行通电。 电枢被安装成在第一时段期间移动到第一位置,在第一周期和第二周期之间移动到第二位置,并且在第二周期中将电枢保持在第二位置并在第二周期之后保持在第三位置。 电枢从第一位置到第二位置的运动启动曝光操作,并且电枢从第二位置到第三位置的移动启动开闭关闭操作,该关闭操作又在第二时段期间开始对电磁体的通电,从而衔铁 保持在适当位置。 结果,获得了技术上和经济上有利的装置,因为它为两个目的使用单个电磁组件。
    • 8. 发明授权
    • Exposure control device for automatic focusing camera
    • 曝光控制装置,用于自动对焦相机
    • US4209242A
    • 1980-06-24
    • US961729
    • 1978-11-17
    • Kiyoshi KitaiYukio MorinoShogo KatoIchiro Nemoto
    • Kiyoshi KitaiYukio MorinoShogo KatoIchiro Nemoto
    • G02B7/09G02B7/28G03B3/00G03B3/10G03B7/08G03B9/08G03B9/16G03B9/62G03B13/02
    • G03B3/10G03B9/16
    • An automatic focusing camera capable of automatically focusing the photographic lens thereof by a system actuated by a signal produced by a focus detection circuit when the distance between the object to be photographed by the camera is detected includes an exposure control device comprising an exposure control circuit and an electromagnet. A photographic lens focusing member is movable in response to the shutter release operation and is stopped in response to the magnetizing of the electromagnet. An exposure device is actuated to open to start the exposure after the photographic lens focusing member is stopped, and is closed in response to the demagnetizing of the electromagnet which occurs upon the receipt thereof of the exposure completion signal generated by the exposure control circuit. In this way, a common electromagnet is used for both the focus control and the exposure control to simplify the construction of the camera and to reduce the cost thereof.
    • 一种自动对焦照相机,其能够在检测到由照相机拍摄的物体之间的距离被检测到时由通过焦点检测电路产生的信号驱动的系统自动聚焦其摄影镜头的曝光控制装置包括曝光控制电路和 电磁铁 照相镜头聚焦构件可响应于快门释放操作而可移动,并且响应于电磁体的磁化停止。 致动曝光装置打开以在摄影镜头聚焦构件停止之后开始曝光,并且响应于在接收到由曝光控制电路产生的曝光完成信号时发生的电磁体的消磁而关闭曝光装置。 以这种方式,将共同的电磁铁用于聚焦控制和曝光控制,以简化相机的结构并降低其成本。