Part 2 analyses beam landing shifts made by thermal deformations of a shadow mask and vibration of a new type of shadow mask - aperture grille . an automatic measurement system for cpt decolorization and a vibration measurement system for aperture grille are established . part 3 analyses the difference of perception and discrimination to color between the human eyes and ccd system , and develops a new method based on ccd technology to evaluate the screen white - balance 主要内容分为三部分： ( 1 )分析着屏电子束分布与电子枪、偏转系统及荫罩之间的关系，研制自动测试装置，为设计和改进相关结构提供依据； ( 2 )分析荫罩热变形和振动对显示屏色纯度影响，建立了色纯漂移自动测试装置和张紧式荫罩振动测试系统； ( 3 )分析了人眼与ccd对彩色刺激的不同响应，建立了基于ccd的显示器全屏色纯均匀性测试方法。
