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    • 64. 发明授权
    • Optical system with continuous film transport
    • 具有连续电影传输的光学系统
    • US3720459A
    • 1973-03-13
    • US3720459D
    • 1971-03-31
    • BACH G
    • BACH G
    • G02B26/10G03B41/08G03B41/04
    • G02B26/108G03B41/08
    • A motion-picture camera or projector has a continuously moving film transporter adjacent one or more light-ray deflectors operating in synchronism therewith, each deflector including at least one fully or partly transparent disk with mutually inclined sides generally perpendicular to the path of a beam transluminating the film, advantageously in a zone where the rays of the beam are parallel. At the instant when a frame of the film is centered on the optical axis, the disk or disks are so positioned that the exciting beam section is in line with the entering beam section; at other instants the two beam sections are relatively deflected, in a direction parallel to the line of film movement, to compensate for the offset of the frame from the optical axis. WIth a single disk per deflector, the beam successively passes with intervening ray transposition through a pair of conjugate peripheral disk portions; alternately, a deflector may consist of a pair of counterrotating disks with overlapping peripheral portions interposed in the beam path. The optically effective disk portions may form one or more prismatic faces periodically intercepting the beam; with two or more deflectors positioned in cascade, their speeds or the number of their faces may be inversely related in a binary series.
    • 运动图像摄像机或投影仪具有与一个或多个与其同步运作的光线偏转器相邻的连续移动的胶片传送器,每个偏转器包括至少一个完全或部分透明的光盘,其相互倾斜的侧面大致垂直于光束的光路的平移 该膜有利地在光束的平行的区域中。 在胶片的框架以光轴为中心的瞬间,盘或盘被定位成使得激发光束部分与入射光束部分一致; 在其他时刻,两个光束部分在平行于胶片移动线的方向上相对偏转,以补偿框架与光轴的偏移。 在每个偏转器的单个盘上,光束依次通过一对共轭外围盘部分的中间射线转置; 交替地,偏转器可以由一对反转盘组成,其中重叠的周边部分插入在光束路径中。 光学有效的盘部分可以形成周期性地拦截光束的一个或多个棱镜面; 其中两个或更多个偏转器被级联放置,它们的速度或它们的面数可能在二进制序列中是负相关的。