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133 条记录 (耗时 0.013 秒)

    Focal adjustment on a single-focus lens in a continuously variable magnification system
    71.
    发明授权
    Focal adjustment on a single-focus lens in a continuously variable magnification system 失效
    在无限变倍放大系统中单焦点透镜的焦点调整

    公开(公告)号：US4099866A

    公开(公告)日：1978-07-11

    申请号：US748810

    申请日：1976-12-08

    申请人： Rick Owen Jones ,  Michael Henry Ulrich

    发明人： Rick Owen Jones ,  Michael Henry Ulrich

    IPC分类号： G03B27/34 ,  G03G15/041 ,  G03G21/00 ,  G03B27/36

    CPC分类号： G03G15/041

    摘要： Method and apparatus for adjusting the position of a single-focus lens at two positions in a continuously variable reduction document copier machine. Adjustment is made at a 1:1 ratio by shifting the position of the lens on its carriage and adjusting the position of optical path mirrors until focus is obtained. Adjustment is made at a nominal 0.647 reduction ratio by adjusting the position of the lens carriage until focus is obtained. Apparatus is disclosed which provides the second adjustment without affecting the position of the lens at the first adjustment position.

    摘要翻译： 用于在连续可变的压缩文件复印机中的两个位置处调整单焦点透镜的位置的方法和装置。 通过在其滑架上移动透镜的位置并调整光路镜的位置直到获得焦点，以1：1的比例进行调整。 通过调整镜头托架的位置直到获得焦点，以标称的0.647减速比进行调整。 公开了提供第二调整而不影响透镜在第一调整位置处的位置的装置。

    Gearless camera-focusing apparatus
    72.
    发明授权
    Gearless camera-focusing apparatus 失效
    无齿轮相机聚焦装置

    公开(公告)号：US3609036A

    公开(公告)日：1971-09-28

    申请号：US3609036D

    申请日：1969-06-02

    申请人： MOSLER SAFE CO

    发明人： NOVAK WARREN D

    IPC分类号： G03B27/36

    CPC分类号： G03B27/36

    摘要： A variable-magnification closed-circuit television system. The system comprises an adjustment mechanism for synchronously positioning a lens and a camera relative to an objective so as to enable the lens to both magnify and reduce the image while always maintaining the image accurately in focus. The adjustment mechanism comprises a plate cam for positioning the lens and a crank driven from the plate cam for positioning the camera.