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热词
    • 4. 发明授权
    • On-axis film scanner with reflected illumination
    • 带反射照明的轴上胶片扫描仪
    • US4105926A
    • 1978-08-08
    • US811869
    • 1977-06-30
    • Charles W. RenoDonald G. Herzog
    • Charles W. RenoDonald G. Herzog
    • G06K7/10
    • G06K7/10831
    • A scanner for reading binary digit spots on a transparent film includes a laser light beam which is directed through a beam splitter and through the film to a mirror, from which it is reflected back through the film to illuminate a small area on the film. Light which is not blocked by a recorded spot on the film continues back to the beam splitter, from which the beam is directed to a photodetector. The photodetector is positioned to receive light from solely a portion of the illuminated area of the film, to provide high definition scanning not adversely affected by distortion of the illuminating light beam by imperfections in the film and mirror.
    • 用于在透明胶片上读取二进制数字点的扫描仪包括被引导通过分束器并通过该膜的反射镜的激光束,该反射镜从该反射镜反射回来以照射薄膜上的一小部分区域。 未被胶片上的记录点阻挡的光继续回到分束器,光束从该光束分离器被引导到光电检测器。 光电检测器被定位成仅从膜的照明区域的一部分接收光,以提供不受薄膜和反射镜中的缺陷引起的照明光束变形的不利影响的高清晰度扫描。