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41. 发明授权

US4353631A Exposure information input circuit for electric shutter 失效
标题翻译：曝光信息输入电路用于电动快门
公开(公告)号：US4353631A
公开(公告)日：1982-10-12
申请号：US143912
申请日：1980-04-25
申请人： Yuzuru Takazawa , Shinji Nagaoka
发明人： Yuzuru Takazawa , Shinji Nagaoka
IPC分类号： G03B7/081 , G03B7/083 , G03B17/18
CPC分类号： G03B7/083
摘要： In an electric shutter having a photoelectric element, a time constant circuit for use in controlling exposure and a low brightness sensor circuit for use in connecting said photoelectric element in series with a comparator resistance and in sensing a low brightness in reference to its partial voltage, an exposure information input circuit for setting one reference voltage to be applied for determining said trigger levels of the two sensor circuits so as to feed exposure information such as film sensitivity, etc. and further having a function correction circuit between said reference voltage and one of said two sensor circuits.
摘要翻译：在具有光电元件的电动快门，用于控制曝光的时间常数电路和用于将所述光电元件与比较器电阻串联连接并且相对于其部分电压感测低亮度的低亮度传感器电路，曝光信息输入电路，用于设置一个用于确定两个传感器电路的触发电平的参考电压，以便馈送诸如胶片敏感性等的曝光信息，并且还具有在所述参考电压与说两个传感器电路。

42. 发明授权

US4316085A Automatic focusing adjustor device 失效
标题翻译：自动聚焦调节装置
公开(公告)号：US4316085A
公开(公告)日：1982-02-16
申请号：US150666
申请日：1980-05-16
申请人： Takeo Saito , Hiroaki Ishida , Takashi Segawa , Shinji Nagaoka , Yuzuru Takazawa
发明人： Takeo Saito , Hiroaki Ishida , Takashi Segawa , Shinji Nagaoka , Yuzuru Takazawa
IPC分类号： G03B13/36 , G02B7/28 , G02B7/30 , G03B13/20
CPC分类号： G02B7/305
摘要： Automatic focusing adjustor device provided with a focusing sensor signal corresponding to an object distance by photoelectrically comparing an optical image obtainable through a fixed mirror and another optical image obtainable through a movable mirror wherein when the focusing sensor signal is not obtained, two steps of distance adjustment may be made by an output signal from a brightness sensor circuit for use in sensing a brightness of the object.
摘要翻译：通过光电比较通过固定镜可获得的光学图像和通过可移动反射镜获得的另一光学图像，自动对焦调节装置具有对应于物距的聚焦传感器信号，其中当未获得聚焦传感器信号时，距离调节两步可以通过来自用于感测物体的亮度的亮度传感器电路的输出信号来进行。

43. 发明授权

US3978499A Warning display circuit of the electric shutter for camera 失效
标题翻译：警告用于摄像机的电动切换器的显示电路
公开(公告)号：US3978499A
公开(公告)日：1976-08-31
申请号：US541338
申请日：1975-01-15
申请人： Shinji Nagaoka , Shogo Kato , Yukio Nakamura
发明人： Shinji Nagaoka , Shogo Kato , Yukio Nakamura
IPC分类号： G03B7/083 , G03B9/58 , G03B9/62 , G03B17/18 , G03B7/00
CPC分类号： G03B17/18 , G03B9/58
摘要： A warning light display device for an electric shutter of a camera having an exposure time control circuit for determining the exposure time of an electric shutter in dependence upon at least the brightness of an object being photographed. A warning display circuit is connected with the exposure time control circuit and has a control transistor that receives the output of the exposure time control circuit and controls the visual indication of three stages of the warning display circuit comprising light emitting diodes that indicate adequate and inadequate exposure conditions. A reference time generating circuit is provided in the warning display circuit for developing a signal representative of a predetermined time duration and a control transistor thereof controls energization of the three stages as a function of a comparison of the exposure time duration developed by the exposure time control circuit and the predetermined time duration developed by the reference time generating circuit.

44. 发明授权

US3962709A Exposure time control circuit 失效
标题翻译：曝光时间控制电路
公开(公告)号：US3962709A
公开(公告)日：1976-06-08
申请号：US533537
申请日：1974-12-17
申请人： Kiyoshi Kitai , Yukio Nakamura , Hiroaki Ishida , Shinji Nagaoka
发明人： Kiyoshi Kitai , Yukio Nakamura , Hiroaki Ishida , Shinji Nagaoka
IPC分类号： G03B7/083 , G03B7/08 , G03B17/18
CPC分类号： G03B7/083
摘要： An exposure time control circuit for a camera shutter having a light-responsive element that controls charging of a capacitor as a function of the intensity of the light from a scene to be photographed. The charge of the capacitor at a certain level activates a switching circuit that initiates closing of the camera shutter. A light-intensity indicating circuit is directly connected to the light-responsive element for indicating the intensity of the light received from a scene to be photographed so that the camera shutter speed may be set accordingly. Photographic exposure and light readings are taken independently with control switches that need not make use of a change-over switch for connecting and disconnecting the light-intensity indicating circuit to the light-responsive element.
摘要翻译：一种用于照相机快门的曝光时间控制电路，其具有控制电容器充电的光响应元件作为来自要拍摄的场景的光的强度的函数。在一定电平下的电容器的电荷激活开关电路，其启动相机快门的关闭。光强度指示电路直接连接到光响应元件，用于指示从要拍摄的场景接收的光的强度，从而可以相应地设置照相机快门速度。摄影曝光和光读数独立于控制开关，不需要使用转换开关来连接和断开光强度指示电路到光响应元件。

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