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    • 34. 发明授权
    • Distance measuring device with various controls of the light emitting
means
    • 距离测量装置,具有发光装置的各种控制
    • US4642451A
    • 1987-02-10
    • US595283
    • 1984-03-30
    • Tokuichi TsunekawaYuichi SatoTakashi KawabataSusumu Matsumura
    • Tokuichi TsunekawaYuichi SatoTakashi KawabataSusumu Matsumura
    • G01C3/10G02B7/32G01J1/20G01J1/32
    • G02B7/32G01C3/10
    • In the disclosed distance measuring device a light source projects light on an object to be photographed. A photo-electric converter for receiving light reflected from the object includes at least one photo-electric converting portion whose electric charge varies according to the quantity of light incident thereon. A control includes a first electric charge store which stores an electric charge produced at the photo-electric converting portion while the light is projected from the light source, a second electric charge store which stores an electric charge produced at the photo-electric converting portion while light is not projected from the light source, and a detector which detects at least one of the amounts of electric charge stored at the first and second electric charge stores. The control varies the quantity of light projected by the light source on the basis of the result detected by the detector.
    • 在所公开的距离测量装置中,光源将光照射在待拍摄物体上。 用于接收从物体反射的光的光电转换器包括至少一个电荷转换部分,其电荷根据入射到其上的光量而变化。 控制装置包括:第一电荷存储器,存储光源从光源投射时在光电转换部分产生的电荷;存储在光电转换部分产生的电荷的第二电荷存储器, 光不从光源投射,并且检测器检测存储在第一和第二电荷存储器中的电荷量中的至少一个。 该控制基于由检测器检测到的结果来改变由光源投射的光量。