摘要
论述了一种成功运用于１２２ｃｍ背投式彩色投影电视机阴极射线管（ＣＲＴ）中的磁聚焦电子枪。该枪采用了预聚焦发射系统和磁聚焦主透镜构成的双聚焦系统。经测试发现，当阴极电流为０．５～１．０ｍＡ时，其上屏束斑直径仅为０．０６５～０．０８０ｍｍ。
The paper studies the magnetic focusing electron gun of CRT used in a new 48-inch rearcolor projection TV. The dual-focusing system in electron gun is developed, which is composed ofelectrostatic pre-focusing and electromagnetic focusing lens. As a result, on the green YAG phosphorscreen, beam spot is 0.065 mm-0.080mm only at cathode currents of o.5 mA-1.0 mA respectively.
出处
《电子科技大学学报》
EI
CAS
CSCD
北大核心
1999年第3期329-332,共4页
Journal of University of Electronic Science and Technology of China
基金
国家"九五"重点科研项目
关键词
电子枪
投影CRT
束斑直径
磁聚焦
electron gun
projection CRT
diameter of beam spot
magnetic focusing
