摘要
一种新型双束投影管已开发成功 ,它具有这些优点 :在分辨率相同时 ,其亮度几乎是传统投影管的两倍 ,换句话说 ,在亮度相同时 ,分辨率比传统投影管高的多 ,并且能够减少由于过载导致的对荧光屏的损伤。所有这些优点都是由于在扫描期间 ,由双重电子束轰击每个象素两次的结果。本文研究的新技术 :一项是为了消除电子光学系统中的象散 ,在静电聚焦P_CRT双束投影管中采用的新设计方案。另一项是为了使驱动两电子束的两个图象信号同步 ,而采用的数字延时电路。本设计原理也能适用于多束P_CRT。
A novel projection tube with double electron beam has been developed. It has some superiorities: the luminance is nearly twice higher than conventional projection tube at same resolution, in other wods, the resolution is much higher than conventional at same luminance, as well as, the damage of phosphor screen for over load could be reduced. All above are due to double electron beam hitting on each pixel two times during a scanning cycle. In this paperm, new technologies are studied: the one is the electrostatic focus P_CRT with double beam adopting new approach for designing free astigmatism of electron optical system, and the other is applying digital delay circuit for the synchronization of two image signals which drive two electron beam respectively. The principle of the design with multi_beam P_CRT also could be suitable.
出处
《现代显示》
2000年第4期33-37,51,共6页
Advanced Display
