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    Method of and apparatus for measuring the movement of a lens with four measurement points
    1.
    发明授权
    Method of and apparatus for measuring the movement of a lens with four measurement points 失效
    用于测量具有四个测量点的透镜的运动的方法和装置

    公开(公告)号：US5493114A

    公开(公告)日：1996-02-20

    申请号：US377904

    申请日：1995-01-24

    申请人： Zac Bogart ,  Matthew Keennon ,  Rodney Martinez

    发明人： Zac Bogart ,  Matthew Keennon ,  Rodney Martinez

    IPC分类号： G02B7/28 ,  G03B27/34 ,  H01J40/14

    CPC分类号： G03B27/34 ,  G02B7/28

    摘要： A method and apparatus for measuring the linear movement between first and second substantially planar surfaces and is useful, for example, in an automatic focusing system of a photographic enlarging or printing machine. The linear movement between a first plane, e.g., a lens plane and a second plane, e.g., a film or print plane, at a single point, e.g., the lens optical center, is determined by measuring the linear movement of two diametrically opposed points proximate to the lens plane equidistant from the lens optical center. The two measured distances are then averaged to yield a distance measurement at the lens optical center corrected for any deflection of the lens plane.

    摘要翻译： 一种用于测量第一和第二基本平坦表面之间的线性运动的方法和装置，例如在照相放大或印刷机的自动聚焦系统中是有用的。 通过测量两个直径相对的点的线性运动来确定在单个点（例如透镜光学中心）处的第一平面（例如，透镜平面）和第二平面（例如，胶片或印刷平面）之间的线性运动 靠近与透镜光学中心等距的透镜平面。 然后对两个测量的距离进行平均，以在针对透镜平面的任何偏转校正的透镜光学中心处产生距离测量。