知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

52 条记录 (耗时 0.02 秒)

    Film projection system
    1.
    发明授权
    Film projection system 失效
    电影投影系统

    公开(公告)号：US4226512A

    公开(公告)日：1980-10-07

    申请号：US938761

    申请日：1978-09-01

    申请人： Hendrik v. Oosten ,  Willem J. P. A. Verbeek

    发明人： Hendrik v. Oosten ,  Willem J. P. A. Verbeek

    IPC分类号： G03B21/00 ,  G03B41/08 ,  G03B41/04

    CPC分类号： G03B41/08

    摘要： A film projection system comprising a film guiding path, a light source, a projection screen and a rotatable optical system. The optical system comprises a support carrying equidistant identical object lenses whose nodal points traverse a path spaced from the film guiding path a distance substantially equal to the focal distance of the object lenses. The beam or beams emanating from the object lenses are projected and brought into register, respectively, on the projection screen by means of a projection lens. Each object lens may have a given distortion for substantially eliminating any residual unintended motion of the projection of each individual point of the film on the screen.

    摘要翻译： 一种胶片投影系统，包括胶片引导路径，光源，投影屏幕和可旋转的光学系统。 光学系统包括承载等距相同物镜的支架，其节点穿过与胶片引导路径间隔开的距离，该距离基本上等于物镜的焦距。 从物镜发出的光束或光束通过投影透镜分别投射并投影到投影屏幕上。 每个物镜可以具有给定的变形，以基本上消除膜在屏幕上的每个单独点的投影的任何残余的非预期运动。

    Epicyclic camera
    2.
    发明授权
    Epicyclic camera 失效
    EPICYCLIC CAMERA

    公开(公告)号：US3743393A

    公开(公告)日：1973-07-03

    申请号：US3743393D

    申请日：1971-10-28

    申请人： CAMPBELL R

    发明人： CAMPBELL R

    IPC分类号： G03B39/04 ,  G03B41/06 ,  G03B41/04

    CPC分类号： G03B39/04 ,  G03B41/06

    摘要： A high speed motion picture camera wherein the film moves continuously during a filming operation, and having an optical system through which the light passes continuously; hence, the epicyclic camera principle in which the film, the shutter and the image are in coordinated motion. The epicyclic camera may be utilized for taking substantially any number of pictures per revolution with good picture quality and superior picture steadiness.

    摘要翻译： 一种高速电影摄像机，其中胶片在拍摄操作期间连续地移动，并且具有连续通过光的光学系统; 因此，其中胶片，快门和图像协调运动的行星相机原理。 行星式摄像机可以用于拍摄基本上任意数量的图像，具有良好的图像质量和优异的图像稳定性。

    Motion picture camera
    8.
    发明授权
    Motion picture camera 失效
    电影摄影机

    公开(公告)号：US4498747A

    公开(公告)日：1985-02-12

    申请号：US519484

    申请日：1983-08-01

    申请人： Bennie R. Brothers

    发明人： Bennie R. Brothers

    IPC分类号： G03B1/22 ,  G03B9/10 ,  G03B41/04

    CPC分类号： G03B1/22 ,  G03B9/10

    摘要： A motion picture camera includes a film pull down mechanism and shutter in which film is moved from one frame to the next in a 360.degree. operating cycle made up of a pull down time and a dwell time. The film pull down mechanism is designed to pull the film down in a period less than the dwell time of the film so that film exposure is increased over that occurring when the pull down time and dwell times are equal. The shutter has an opaque sector less than 180.degree. and an open sector greater than 180.degree. responsive to operation of the pull down mechanism to eclipse the film from exposure during the pull down time. The film pull down mechanism further includes a means for varying the length of film pulled down so that film frames of different vertical dimensions can be properly exposed by the same motion picture camera.

    摘要翻译： 电影摄像机包括胶片下拉机构和快门，其中胶片在由下拉时间和停留时间组成的360度操作周期中从一帧移动到下一帧。 膜下拉机构被设计成在小于膜的停留时间的时间内将膜下拉，使得当下拉时间和停留时间相等时，胶片曝光增加。 快门具有小于180度的不透明扇区和响应于下拉机构的操作的大于180度的开口扇区，以在下拉时间期间遮盖膜曝光。 胶片下拉机构还包括用于改变下拉的胶片的长度的装置，使得具有不同垂直尺寸的胶卷框可以通过相同的运动相机适当曝光。

    Device to correct the malfunction in film feed of a perforated film through a light beam
    9.
    发明授权
    Device to correct the malfunction in film feed of a perforated film through a light beam 失效
    通过光束校正穿孔膜的胶片进给故障的装置

    公开(公告)号：US4498745A

    公开(公告)日：1985-02-12

    申请号：US497120

    申请日：1983-05-23

    申请人： Viktor DeJeney

    发明人： Viktor DeJeney

    IPC分类号： G03B41/04

    CPC分类号： G03B41/04

    摘要： A compact, easily installable light detector unit is provided to automatically correct malfunction in film feed in projection devices of the type described in U.S. Pat. No. 4,312,576. Light is projected through the perforation apertures in the film and conducted to light sensing a element by means of a fiber optic pipe. The mechanism which corrects malfunctions in film feed is activated only when such correction is required.

    摘要翻译： 提供了一种紧凑的，易于安装的光检测器单元，用于自动校正美国专利中描述的类型的投影装置中的胶片馈送中的故障。 第4,312,576号。 光通过膜中的穿孔开始投射，并通过光纤管传导到感光元件。 校正胶片进给故障的机制仅在需要进行这种校正时被激活。

    Continuous film movement motion picture apparatus
    10.
    发明授权
    Continuous film movement motion picture apparatus 失效
    连续电影运动图像装置

    公开(公告)号：US3743396A

    公开(公告)日：1973-07-03

    申请号：US3743396D

    申请日：1971-07-20

    申请人： BOLEX INT SA

    发明人： ODONE G

    IPC分类号： G03B41/04 ,  G03B41/10

    CPC分类号： G03B41/04 ,  G03B41/10

    摘要： The device includes a light source supplying several flashes on the passage of each frame of the film. A mirror provides several optical paths for the light rays to compensate for the movements of the film between flashes, and is actuated independently of the advance of the film and at a frequency several times higher than the rate of passage of the images. A detector of the relative momentary position between the compensating mirror and the position of the film activates a flash of the lamp for the positions in which the compensation is correct by way of an electrical gating circuit.

    摘要翻译： 该装置包括在胶片的每个框架的通道上提供多次闪光的光源。 反射镜为光线提供了若干光路，用于补偿胶片在闪光之间的移动，并且独立于胶片的前进并以比图像的通过速度高几倍的频率来启动。 补偿反射镜和胶片位置之间的相对瞬时位置的检测器通过电门电路激活用于补偿正确位置的灯的闪光。