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    • 6. 发明授权
    • Range finder
    • 测距仪
    • US4441810A
    • 1984-04-10
    • US281890
    • 1981-07-09
    • Haruhiko MomoseToshiaki TakahashiYasushi Hoshino
    • Haruhiko MomoseToshiaki TakahashiYasushi Hoshino
    • G01C3/10G01S17/46G01C3/00
    • G01C3/10G01S17/46
    • A range finder for measuring the distance of an object to be measured by the steps of radiating the spot light to the object, forming an image of the reflected ray of light by image forming means and measuring the distance of the object from the output of an element which is disposed at a position substantially corresponding to the image forming position and of which output varies in accordance with the light-receiving position on the light-receiving surface. PSD are used as the element. A focussing detector which includes a semiconductor position detection element PSD placed at a position corresponding to the film surface in a camera or the like and detects the focussing state on the basis of the electric output from the semiconductor position detection element PSD. A focussing detector which comprises image forming means for forming the image of an object; a PSD disposed in such an arrangement that the light-receiving surface thereof is eccentric with respect to the optical axis of an optical system including the image forming means and disposed at the back of the image forming means; and an operation circuit detecting the extreme values of the output of the PSD and producing a focussing signal.
    • 一种测距仪,用于通过将点光照射到物体上的步骤来测量待测物体的距离,通过图像形成装置形成反射光线的图像,并测量物体距离物体的距离 元件,其设置在基本上对应于图像形成位置的位置处,并且其输出根据受光面上的光接收位置而变化。 PSD用作元素。 一种聚焦检测器,其包括位于与相机等中的膜表面相对应的位置处的半导体位置检测元件PSD,并且基于来自半导体位置检测元件PSD的电输出来检测聚焦状态。 一种聚焦检测器,包括用于形成物体的图像的图像形成装置; PSD,被布置成使得其光接收表面相对于包括图像形成装置的光学系统的光轴偏心并且设置在图像形成装置的后面; 以及检测PSD的输出的极值并产生聚焦信号的运算电路。