Film projector with sound playback or recording
    1.
    发明授权
    Film projector with sound playback or recording 失效
    电影放映机带声音播放或录音

    公开(公告)号:US4200363A

    公开(公告)日:1980-04-29

    申请号:US968467

    申请日:1978-12-11

    CPC classification number: G03B41/08

    Abstract: A motion picture film projector includes a sound head for playing back or for recording a sound track on the film. Absolute synchronism between the picture and sound is assured by the use of a single motor and common shaft to move the film past the sound head and to rotate the optical rectification system. In one embodiment, the sound head is mounted on the concave side of a stationary arcuate film guide opposite the sound track, and the film is driven past the sound head by a sprocket wheel mounted on the common shaft adjacent the optical rectification system.

    Abstract translation: 电影胶片投影机包括用于在电影上回放或用于记录声轨的声音头。 图像和声音之间的绝对同步通过使用单个电机和公共轴来移动胶片通过声音头并使光学整流系统旋转得到保证。 在一个实施例中,声头安装在与声轨相对的固定弓形胶片导板的凹面上,并且胶片通过安装在邻近光学矫正系统的公共轴上的链轮驱动通过声音头。

    Slow-motion camera
    2.
    发明授权
    Slow-motion camera 失效
    慢跑摄像机

    公开(公告)号:US3597059A

    公开(公告)日:1971-08-03

    申请号:US3597059D

    申请日:1968-09-13

    Inventor: GOPFERT HERBERT

    CPC classification number: G03B41/08 G01R13/204

    Abstract: The slow-motion camera has a compensating prism rotatably mounted in a prism holder detachable from the camera housing. The prism is driven by a disengageable coupling from the film drive sprocket which moves in synchronism with the running of the film. When the coupling is disengaged a blocking pin secures the prism against rotation, with its parallel faces transversely of the optical axis.

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