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    Method and apparatus for setting the sharpness of an optical imaging system
    2.
    发明授权
    Method and apparatus for setting the sharpness of an optical imaging system 失效
    用于设置光学成像系统的清晰度的方法和装置

    公开(公告)号：US5365053A

    公开(公告)日：1994-11-15

    申请号：US107783

    申请日：1993-08-31

    申请人： Rainer Schielke ,  Holger Suhr ,  Udo Wurdemann ,  Axel Heuer

    发明人： Rainer Schielke ,  Holger Suhr ,  Udo Wurdemann ,  Axel Heuer

    IPC分类号： G02B7/36 ,  G02B7/28 ,  G03B13/36 ,  H04N5/232 ,  G01J1/20

    CPC分类号： G02B7/28

    摘要： A method and an apparatus for setting the sharpness of an optical imaging system by step-by-step adjustment of the distance between a subject and an objective and by evaluating the sharpness values identified for the individual distances. First, the sharpness values (S) for two distances (R) modified proceeding from a prescribed distance (Ro) by a respective step width in both adjustment directions are identified and the best sharpness value is determined by comparing these sharpness values (S) to the sharpness value (So) for the prescribed distance (Ro). Respectively two distance points (R1 through R4) having defined step widths proceeding from the prescribed distance (Ro) are then identified in an allowed range of adjustment (VS) and the appertaining sharpness values (S1 through S4) are identified. After this, straight lines (G1; G2) are placed through respectively two of the sharpness values (S1 through S4) to the left and right of the sharpness value (So), these being the tangents at the function curve (V) of the sharpness values (S) dependent on the distances (R). The intersection of the straight lines (G1; G2) and the distance value (Rmax) belonging to the intersection are then identified, this yielding the maximum sharpness value (Smax).

    摘要翻译： 一种用于通过对被摄体和物镜之间的距离进行逐步调节并且通过评估为每个距离确定的清晰度值来设置光学成像系统的清晰度的方法和装置。 首先，通过在两个调整方向上的相应步长从规定距离（Ro）改变的两个距离（R）的清晰度值（S）被识别，并且通过将这些锐度值（S）与 规定距离的锐度值（So）（Ro）。 然后在允许的调整范围（VS）中识别具有从规定距离（Ro）开始的具有限定步长的两个距离点（R1至R4），并且识别出具有清晰度值（S1至S4）。 之后，直线（G1; G2）分别通过清晰度值（So）的左右两个清晰度值（S1至S4）放置，这些是锐度值（So）的函数曲线（V）的切线 锐度值（S）取决于距离（R）。 然后识别属于交点的直线（G1; G2）和距离值（Rmax）的交点，这产生最大锐度值（Smax）。