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    Optical scanning system
    1.
    发明授权
    Optical scanning system 失效
    光学扫描系统

    公开(公告)号：US3897148A

    公开(公告)日：1975-07-29

    申请号：US42033873

    申请日：1973-11-29

    Applicant: IBM

    Inventor： RITCHIE ROBERT T ,  ROGERS JAMES C

    IPC: G03B27/34 ,  G02B15/00 ,  G03B27/50 ,  G03B27/52 ,  G03G15/04 ,  G03G15/041 ,  G03B27/36

    CPC classification number: G03G15/041 ,  G03B27/526

    Abstract: A multiple carriage optical scanning system scans a stationary planar object onto a moving photoreceptive surface at a selected one of a plurality of magnification settings and locates the image at a fixed reference position on the photoreceptive surface regardless of the magnification selected. The scanning system includes a reciprocating lens and light source, the velocities thereof in the scanning direction being controlled by the magnification selected. The lens is supported on a lens carriage which locates the lens along its optical axis in accordance with the magnification selected. The lens carriage is supported for reciprocal motion in a scanning direction on a set of guide rails which are mounted on a second carriage which is movable in a direction perpendicular to the scanning direction and to the optical axis. Combined carriage motion effects the positioning of the lens along three coordinate directions to provide the desired magnification and image placement. The lens carriage is thereafter driven by a rotating drive arm which contacts the lens carriage at a radial position on the drive arm which determines the lens velocity. A set of mirrors are employed along the optical path for conjoint movement with the lens for focusing. Velocity and initial position of the light source is controlled by drive cam selection. A common drive source controls the synchronized motions of the photoreceptive surface, the lens and the light source. A second drive source controls the three dimensional positioning of the lens, positioning of the mirrors and drive cam selection.

    Abstract translation: 多托架光学扫描系统以固定的平面物体在多个放大倍率选择的一个设置中将静止的平面物体扫描到移动的感光表面上，并将图像定位在感光面上的固定的基准位置，而与所选择的倍率无关。 扫描系统包括往复透镜和光源，其扫描方向的速度由选择的倍率控制。 透镜支撑在透镜托架上，透镜托架根据所选择的倍率沿着其光轴定位透镜。 透镜托架支撑在一组导轨上沿扫描方向往复运动，导轨安装在可沿垂直于扫描方向的方向和光轴可移动的第二托架上。 组合滑架运动影响透镜沿着三个坐标方向的定位，以提供所需的放大倍率和图像放置。 此后，透镜托架由旋转驱动臂驱动，该旋转驱动臂在驱动臂上的径向位置处接触透镜托架，其确定透镜速度。 沿着光路采用一组反射镜，用于与用于聚焦的透镜联合运动。 光源的速度和初始位置由驱动凸轮选择控制。 共同的驱动源控制感光表面，透镜和光源的同步运动。 第二驱动源控制镜头的三维定位，镜子的定位和驱动凸轮的选择。

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