发明名称 Measuring apparatus for camera
摘要 According to a measuring apparatus for a camera, light is projected to an object from a projection section, and light reflected on the object is received at a first light receiving section and a second light receiving section arranged to be adjacent to each other. In the first light receiving section, a first and second signals relating to a light receiving position and a quantity of received light are output, and in the second light receiving section, a third signal relating to a quantity of light of the reflected light is output. In a discriminating and calculating section, if it is discriminated that the reflected light is positioned at a place, which is nearer than a predetermined distance, a measuring distance can be calculated from an output ratio of the first signal to the second signal by a measuring calculation circuit. On the other hand, if it is discriminated that the reflected light is positioned at a place, which is farther than the predetermined distance, a measuring distance can be calculated from the output ratio of the sum of the first and second signals to the third signal by the measuring calculation circuit.
申请公布号 US5235377(A) 申请公布日期 1993.08.10
申请号 US19920826626 申请日期 1992.01.28
申请人 OLYMPUS OPTICAL CO., LTD. 发明人 IDE, MASATAKA;NONAKA, OSAMU
分类号 G01C3/06;G02B7/32;G03B13/36 主分类号 G01C3/06
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