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一、概述高分辨率阴极射线管是电子束管的一种,它的主要特点是管内电子束能在荧光屏上产生特别微小的光点,因此这种管子又称为“微点管”.电子束管的分辨率一般可以用行数来表示.行数是指当光点在屏上扫描时,其屏面上所能排满扫描线的数目.广播电视系统中扫描线的行数是625行,所以电视显象管的分辨率有五、六百行就已基本上能满足要求了.但是在其他一些精密设备中,这样的分辨率却和要求相差很远.
First, an overview High-resolution cathode ray tube is a kind of electron beam tube, its main feature is that the tube electron beam can produce particularly tiny spot on the screen, so this tube is also called “micro-point tube.” Electronic The resolution of a beam tube can generally be expressed in terms of the number of rows.The number of rows refers to the number of scanning lines that can be filled up on the screen when the spot is scanned on the screen.The number of scanning lines in a broadcast television system is 625 Therefore, the resolution of the TV picture tube can basically meet the requirements of five or six hundred lines, but in other sophisticated equipments, the resolution is far from the requirement.