Film scanner illumination system having an automatic light control
    2.
    发明授权
    Film scanner illumination system having an automatic light control 失效
    具有自动光控制的电影扫描仪照明系统

    公开(公告)号:US5155596A

    公开(公告)日:1992-10-13

    申请号:US620993

    申请日:1990-12-03

    CPC分类号: G03B27/542 F21V9/10 H04N9/11

    摘要: An illumination system for a film scanner is disclosed which comprises a light source and optics for providing a line of light on a film. Light transmitted through the film is imaged onto photosensor elements such as CCD arrays. In order to obtain a high quality electronic image from various types of film, an integrating cylinder is used to provide a line of diffuse light on the film, and light delivered to the integrating cylinder is controlled in accordance with the particular type of film being scanned and the operating conditions of the apparatus.

    摘要翻译: 公开了一种用于胶片扫描器的照明系统,其包括用于在胶片上提供一线光的光源和光学元件。 透过薄膜的光成像到诸如CCD阵列的光传感元件上。 为了从各种类型的胶片中获得高品质的电子图像,使用积分筒在膜上提供漫射光线,并且根据被扫描的特定类型的膜来控制传送到积分筒的光 和设备的操作条件。

    Motion picture telecine balanced for negative scanning
    3.
    发明授权
    Motion picture telecine balanced for negative scanning 失效
    电影电视电影平衡负扫描

    公开(公告)号:US5049984A

    公开(公告)日:1991-09-17

    申请号:US406407

    申请日:1989-09-12

    IPC分类号: H04N5/253 H04N9/09 H04N9/11

    CPC分类号: H04N9/11

    摘要: A motion picture telecine scanner interposes a motion picture negative or print film (10) in an optical light path (12) between a light source (14) and a pickup stage (16) that develops a plurality of separate color output signals (R, G, B). By balancing the scanner so that the pickup stage provides substantially equivalent output levels in the respective colors for color transmissions substantially equivalent to like transmissions through the base density of a negative film, substantial signal-to-noise performance is realized during negative scanning. The base density is provided during a calibration mode by an optical filter (44) that is inserted into the light path with the motion picture film removed. In addition, the optical filter (44) is kept in the light path (12) during motion picture print scanning without any loss in signal-to-noise performance.

    摘要翻译: 运动图像电视电影扫描仪将动态影像负片或印刷胶片(10)插入在光源(14)和拾取台(16)之间的光学光路(12)中,所述光源(14)与拾取台(16)之间形成多个分离的彩色输出信号 G,B)。 通过平衡扫描仪,使得拾取台在各自颜色中提供基本相当于通过底片的基本密度的类似传输的颜色传输的基本上相等的输出电平,在负扫描期间实现了实质的信噪比性能。 在校准模式期间,通过移除了电影胶片插入到光路中的滤光器(44)提供基底密度。 此外,在运动图像打印扫描期间,滤光器(44)保持在光路(12)中,而没有信噪比性能的任何损失。