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在彩色显象管靠近荧光屏的地方,安装了一块象“筛子”一样的金属孔板叫荫罩板,在板上整整齐齐地排列着许多小圆孔,孔的大小和荧光点相当(这是色点管的情况,如果是色条管,则荫罩上的孔变成一条条缝隙。),而且每个小孔都对准荧光屏上的一组红、绿、蓝荧光点(色点)。这样,当三个电子枪的位置安装合适时,三根电子束便在小孔上交叉,并且在穿过小孔之后,恰好分别
In the place where the color picture tube is close to the screen, a metal plate like a “screen” is installed as a shadow mask, and many small round holes are arranged on the plate neatly, the size of the hole is equivalent to that of the fluorescent spot Is the case of a color dot tube, in the case of a color tube, the apertures in the mask become a slit.) Each aperture is aligned with a set of red, green and blue fluorescent dots on the screen ). Thus, when the positions of the three electron guns are properly mounted, the three electron beams cross over the apertures and, after passing through the apertures, exactly