Apparatus for stabilizing beam for exposure
    1.
    发明授权
    Apparatus for stabilizing beam for exposure 失效
    用于稳定曝光的光束的装置

    公开(公告)号:US4068197A

    公开(公告)日:1978-01-10

    申请号:US699068

    申请日:1976-06-23

    摘要: An apparatus for stabilizing a laser beam to be used for exposure in an image-reproducing apparatus wherein said beam is suitably controlled by image signals obtained from the scanning of the original beam as modulated. A laser beam, after being suitably modulated by an ultrasonic light modulator, is branched out by a half mirror into two beams, one of which is to be used for exposing a photosensitive material and the other is used as a negative feedback signal. This feedback signal is then added to an image signal so that a linearity between exposing beam and image signals are greatly improved. Further, by improving the linearity of exposing beam, the stability of the exposing beam is simultaneously improved.

    摘要翻译: 一种用于稳定用于在图像再现装置中曝光的激光束的装置,其中所述光束由从被调制的原始光束的扫描获得的图像信号适当地控制。 激光束经超声波光调制器适当调制后,由半反射镜分为两束,其中一束用于曝光感光材料,另一根用作负反馈信号。 然后将该反馈信号添加到图像信号,使得曝光光束和图像信号之间的线性度大大提高。 此外,通过提高曝光光束的线性,可以同时提高曝光光束的稳定性。

    Image recording device
    7.
    发明授权
    Image recording device 失效
    图像记录装置

    公开(公告)号:US4517608A

    公开(公告)日:1985-05-14

    申请号:US398027

    申请日:1982-07-14

    摘要: An image scanning and recording system includes a recording unit for duplicating and recording halftone images on a photosensitive material. The recording unit comprises an acousto-optic light modulating element including a plurality of ultrasonic wave exciting portions disposed side by side on a single acousto-optic medium. The ultrasonic wave exciting portions independently, modulate incident light into a plurality of modulated light beams in response to image signals from photoelectrical scanning means. A scale-down optical system then reduces the diameter of the plurality of modulated light beams, and a plurality of light transfer elements transfer the light beams from the scale-down optical system to a focussing lens system to be projected therefrom onto a film mounted on a recording cylinder.

    摘要翻译: 图像扫描和记录系统包括用于在感光材料上复制和记录半色调图像的记录单元。 记录单元包括声光调制元件,声光调制元件包括在单个声光介质上并排设置的多个超声波激励部分。 超声波激励部分独立地响应于来自光电扫描装置的图像信号将入射光调制成多个调制光束。 缩小光学系统然后减小多个调制光束的直径,并且多个光传输元件将来自缩小光学系统的光束传送到聚焦透镜系统以从其投射到安装在其上的胶片上 记录圆筒。

    Method for stabilizing a modulated light ray
    10.
    发明授权
    Method for stabilizing a modulated light ray 失效
    稳定调制光线的方法

    公开(公告)号:US4221960A

    公开(公告)日:1980-09-09

    申请号:US960058

    申请日:1978-11-13

    摘要: A light ray emitted by a light source and which is to be modulated by an acoustic-optical modulator element is stabilized by its intensity being detected before it enters the acoustic-optical modulator element and being used to produce correction signals. The correction signals are used to amplitude-modulate a high-frequency carrier in reverse phase to the change of intensity of the light ray, to produce corrected carrier signals. Then the corrected carrier signals are further amplitude-modulated by control signals to produce modulator signals which are used to modulate the light ray in the acoustic-optical modulator element.

    摘要翻译: 由光源发射并由声光调制器元件调制的光线在其进入声光调制器元件之前被检测到的强度被稳定,并用于产生校正信号。 校正信号用于对与光线的强度的变化相反的高频载波进行幅度调制,以产生校正的载波信号。 然后校正的载波信号被控制信号进一步幅度调制,以产生用于调制声光调制器元件中的光线的调制器信号。