公开(公告)号：US4881016A

公开(公告)日：1989-11-14

申请号：US282322

申请日：1988-12-09

申请人： Arthur A. Margolis

发明人： Arthur A. Margolis

IPC分类号： H01J29/81 ,  H04N9/28

CPC分类号： B82Y10/00 ,  H01J29/81

摘要： In a color cathode ray tube, a single selectron beam is deflected through a deflection yoke and passes through a collimation lens to an active shadow mask formed with a plurality of apertures to divide the beam into a plurality of segments. Each beam segment is intensity modulated at the entrance of its aperture through modulating electrodes which focus the electrons in the beams at crossover points within the apertures. Lens electrodes at the exits of the apertures restore travel of the electrons to parallel paths approaching a three color phosphor screen. The distance between corresponding modulating and lens electrodes at the entrance and exit of each aperture is approximately equal to the sum of the focal lengths thereof for restoring said electron travel to the parallel paths and thereby correctively regulating display of multi-color information on the screen corresponding to the input modulating voltage signals applied to the modulating electrodes.

摘要翻译： 在彩色阴极射线管中，单个选择光束通过偏转线圈偏转并通过准直透镜到形成有多个孔的有源荫罩，以将光束分成多个段。 每个光束段在其孔径的入口处通过调制电极进行强度调制，该电极在光束内的交叉点处将电子聚焦在光束中。 在孔的出口处的透镜电极恢复电子到接近三色荧光屏的平行路径的行进。 每个孔的入口和出口处的相应调制镜和透镜电极之间的距离大致等于其焦距的总和，用于将所述电子行进恢复到平行路径，从而对屏幕上的多色信息进行校正显示对应 到施加到调制电极的输入调制电压信号。