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81. 发明授权

US4336991A Exposure mode changeover device for interchangeable lens mounting 失效
标题翻译：曝光模式切换装置可互换镜头安装
公开(公告)号：US4336991A
公开(公告)日：1982-06-29
申请号：US109419
申请日：1980-01-03
申请人： Takashi Isobe
发明人： Takashi Isobe
IPC分类号： G03B7/01 , G03B7/20 , G03B9/07 , G03B17/14
CPC分类号： G03B17/14
摘要： An interchangeable lens assembly having an adapter member which is maintained rotatively fixed relative to a camera during mounting of the lens assembly, and a lens barrel subassembly rotatable relative to the adapter member and the camera to effect mounting operation, includes a signal transmitting member cooperative with a control member in the camera body for transmission of exposure control signals. A signal member for exposure mode selection is arranged in the lens assembly to project outwardly beyond the surface of the adapter member facing toward the camera and to be retracted therefrom, depending upon whether manual or automatic exposure modes are selected, and when the diaphragm setting ring is rotated to select either one of the modes, information representative of the so-selected mode is transmitted into the camera body.
摘要翻译：一种可互换的透镜组件，具有适配器构件，该适配构件在安装透镜组件期间相对于照相机保持可旋转地固定，并且可相对于适配器构件和相机旋转以实现安装操作的镜筒组件包括与相机主体中用于传输曝光控制信号的控制构件。用于曝光模式选择的信号构件被布置在透镜组件中，这取决于是否选择手动或自动曝光模式，并且当膜片设置环时，向外突出超过适配器构件面向照相机的表面并从其中缩回旋转以选择模式之一，表示所选模式的信息被传送到相机机身中。

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