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    • 1. 再颁专利
    • Camera with autofocusing device
    • 相机带自动对焦装置
    • USRE33185E
    • 1990-03-20
    • US328660
    • 1981-12-03
    • Mutsuhide MatsudaShuichi TamuraHideo Tamamura
    • Mutsuhide MatsudaShuichi TamuraHideo Tamamura
    • G02B7/08G02B7/36
    • G02B7/36
    • A camera comprises an exposure meter having a pointer deflected to a position dependent upon the brightness level of an object to be photographed, a scanning mechanism actuated by a camera release to scan the position of the deflected pointer with the scanning result being introduced to a lens aperture mechanism, an automatic focus adjusting device actuated by the camera release to control the focusing of an objective lens in accordance with a photoelectrically sensed distance from the camera to the object, and a control mechanism. Since the photoelectric elements in measuring the object distance have a relatively long time lag, the control mechanism functions upon actuation of the camera release to defer the actuation of the scanning mechanism and the autofocusing device, pending completion of the detection of the object distance. In this manner, an exposure setting accurately corresponding to the prevailing lighting conditions is obtained. When the light value is too low to assure the satisfactory operation of the automatic focus adjusting device, the camera may be switched to the flash mode where the objective lens and the aperture mechanism are automatically set in a pan-focus condition in response to actuation of the camera release.
    • 5. 发明授权
    • Camera with autofocusing device
    • 相机带自动对焦装置
    • US4199235A
    • 1980-04-22
    • US962074
    • 1978-11-20
    • Mutsuhide MatsudaShuichi TamuraHideo Tamamura
    • Mutsuhide MatsudaShuichi TamuraHideo Tamamura
    • G02B7/08G02B7/36G03B3/10G03B7/08
    • G02B7/36
    • A camera comprises an exposure meter having a pointer deflected to a position dependent upon the brightness level of an object to be photographed, a scanning mechanism actuated by a camera release to scan the position of the deflected pointer with the scanning result being introduced to a lens aperture mechanism, an automatic focus adjusting device actuated by the camera release to control the focusing of an objective lens in accordance with a photoelectrically sensed distance from the camera to the object, and a control mechanism. Since the photoelectric elements in measuring the object distance have a relatively long time lag, the control mechanism functions upon actuation of the camera release to defer the actuation of the scanning mechanism and the autofocusing device, pending completion of the detection of the object distance. In this manner, an exposure setting accurately corresponding to the prevailing lighting conditions is obtained. When the light value is too low to assure the satisfactory operation of the automatic focus adjusting device, the camera may be switched to the flash mode where the objective lens and the aperture mechanism are automatically set in a pan-focus condition in response to actuation of the camera release.
    • 相机包括曝光计,其具有偏转到取决于要拍摄的对象的亮度水平的位置的指针,由相机释放致动的扫描机构,以扫描结果被引入到透镜的扫描指示器的位置 光圈机构,由相机释放致动的自动对焦调节装置,以根据从照相机到对象的光电感测距离来控制物镜的聚焦,以及控制机构。 由于测量对象距离的光电元件具有相对较长的时间滞后,因此在完成对象距离的检测之前,控制机构在驱动相机释放时起作用以推迟扫描机构和自动对焦装置的致动。 以这种方式,获得与主要照明条件精确对应的曝光设置。 当光线值太低而不能确保自动聚焦调节装置的令人满意的操作时,相机可以切换到闪光模式,其中物镜和光圈机构响应于主动作被自动设定在泛焦条件 相机发布。
    • 6. 发明授权
    • Zone sensing apparatus
    • 区域感测装置
    • US4529304A
    • 1985-07-16
    • US355248
    • 1982-03-05
    • Masahiko OgawaShuichi TamuraMutsuhide MatsudaTakao Kinoshita
    • Masahiko OgawaShuichi TamuraMutsuhide MatsudaTakao Kinoshita
    • G02B7/32G01C3/10G03B7/08
    • G01C3/10
    • The disclosed apparatus determines optically whether an object is located within a first range of distances from the apparatus or a second range of distances from the apparatus. A radiation projecting arrangement projects a beam towards the object and a receiving arrangement disposed a predetermined distance transverse to the object direction receives the radiation reflected from the object. A pair of radiation sensors in the receiving arrangement each produce an electrical output corresponding to the received radiation. A circuit responds to the outputs of the sensors to determine whether the object is located within a first range or a second range. The circuit arrangement connects the radiation sensors so as to subtract their outputs, and one of the sensors is provided with a more extensive radiation receiving area than the other. This extends one of the range of distances.
    • 所公开的装置以光学方式确定物体是否位于距离装置的距离的第一范围内或距离装置的距离的第二范围内。 辐射突出装置将光束投射到物体,并且横向于物体方向设置的预定距离的接收装置接收从物体反射的辐射。 接收装置中的一对辐射传感器各自产生对应于所接收的辐射的电输出。 电路响应传感器的输出,以确定对象是位于第一范围还是第二范围内。 电路装置连接辐射传感器以减去其输出,并且传感器中的一个具有比另一个更广泛的辐射接收区域。 这扩展了距离范围之一。