三电极全静电摄像管  

All Electrostatic Camera Tubes with Tri-Electrodes

作　　者：杨国伟[1] 关永贵 

机构地区：[1]南京理工大学光电技术系

出　　处：《真空电子技术》1994年第1期7-12,共6页Vacuum Electronics

摘　　要：磁聚焦静电偏转（ＭＳ）和静电聚焦静电偏转（ＳＳ）型摄像管具有图像失真小，分辨率高且均匀，电子束易于垂直上靶，阴影小等优点，所以受到人们的重视。但图案偏转电极的形状复杂，非对称场的计算较困难。本文对静电偏转型聚焦偏转系统的结构作了分析研究，运用分离变量法给出了圆柱坐标中静电聚焦（旋转对称）场和静电偏转（非旋转对称）场的解析解，讨论了静电聚焦静电偏转（ＳＳ）型聚焦偏转系统设计中有关电子轨迹的计算方法，最后给出了计算实例和１ｉｎ与２／３ｉｎ全静电实验样管的测试结果。n electroctatic deflection-type camera tube has the following edvantages:The small electron beam spots over the entire scanned area provide uniform and high resolution picture,normal beam landing performance and excellent deflection linearity.The focus deflection system of a camera tube with electrostatic deflection yokes have ben investigated in this Paper. Electric field distributions of electrostatic focus (rotatiohally symmetrical) and electrestatic deflection (non-rotationally symmetrical) are obtained using analytic methods. And the method of solving seneral equation of motion for an electron in mixed field which produces a combined electrestatic focus field and the electrostatic deflection field is briefly discussed. We present our experimental results for two type test tubes of lin-format and 2/3in-format with all electrostatic.

关 键 词：摄像管 静电偏转 静电聚焦 静电场 

分 类 号：TN142[电子电信—物理电子学]