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    • 5. 发明授权
    • Distance detector using a photopotentiometer and a continuous detecting
system
    • 距离探测器采用光电位计和连续检测系统
    • US4445029A
    • 1984-04-24
    • US258517
    • 1981-04-28
    • Shinji NagaokaKoji Satoh
    • Shinji NagaokaKoji Satoh
    • G01C3/06G01C3/00G01C3/10G01S17/46G02B7/28G03B13/36G01J1/20
    • G01S17/46G01C3/10
    • A distance detector capable of measuring the distance between the range detector and an object by directing a light emitted from a light emission element to the object and receiving the reflected light and advantageously adaptable particularly to small-sized cameras.The light reflected on the object is received by a single light-receiving element. The reflected light is condensed by a condenser and concentrated on the light-receiving element. The light-receiving element comprises an element, for example a photopotentiometric element, varying in the electric output according to the position of the light spot of the reflected light. The output of the element in the form of electric signal continuously varies in proportion to the distance between the range detector and the object.
    • 一种距离检测器,其能够通过将从发光元件发射的光引导到对象并接收反射光并且有利地特别适用于小型照相机来测量距离检测器和物体之间的距离。 在物体上反射的光被单个光接收元件接收。 反射光被冷凝器冷凝并集中在光接收元件上。 光接收元件包括根据反射光的光点的位置而在电输出中变化的元件,例如光电位元件。 电信号形式的元件的输出与距离检测器和物体之间的距离成比例地连续变化。
    • 9. 发明授权
    • Exposure quantity control circuit
    • 曝光量控制电路
    • US4033682A
    • 1977-07-05
    • US596018
    • 1975-07-15
    • Yukio NakamuraShougo KatoShinji Nagaoka
    • Yukio NakamuraShougo KatoShinji Nagaoka
    • G03B7/083G03B9/62G03B9/08
    • G03B9/62G03B7/083
    • An electric shutter is opened and closed to effect an exposure in dependence upon the energization of an electromagnet. A switching circuit controls the energization of the electromagnet in accordance with various exposure information, such as diaphragm setting and film sensitivity. An exposure control circuit comprised of a series connection of a diode and a variable resistor is connected in parallel with the electromagnet and adjustably controls the time at which the electromagnet is deenergized to accordingly effect closing of the shutter such that the electromagnet delay time equals the shutter sector advancing time to thereby compensate for fluctuations between the two times.
    • 电动快门被打开和关闭以根据电磁铁的通电而进行曝光。 开关电路根据各种曝光信息来控制电磁铁的通电,例如膜片设定和膜敏感性。 由二极管和可变电阻器的串联连接构成的曝光控制电路与电磁体并联连接,并且可调节地控制电磁铁断电的时间,从而相应地实现快门关闭,使得电磁延迟时间等于快门 从而补偿两次之间的波动。