液晶投影显示的色纯度和色均匀性  

Color Purity and Color Uniformity of Liquid Crystal Projection Display

作　　者：郑臻荣[1] 顾培夫[1] 

机构地区：[1]浙江大学现代光学仪器国家重点实验室,浙江杭州310027

出　　处：《光电工程》2002年第5期30-32,55,共4页Opto-Electronic Engineering

基　　金：国防预研(6.6.5.1)和浙江省产业化基金资助项目

摘　　要：用1931CIE和1976CIE分析了液晶投影显示分色系统对图像色纯度和色均匀性的影响。介 绍了分色系统的膜系设计,与典型的分色膜系相比,优化膜系由于通带中的波纹显著减小,色纯度得到明显改善,尤其是绿光。讨论了照明光孔径角对分色系统色均匀性的影响,提出了用厚度渐变的楔形膜校正色差的方法,使色均匀性得到显著改进。The influence of color splitting system for liquid crystal projection display on color purity and color uniformity of an image is analyzed with color standards of 1931CIE and 1976CIE. The coatings design of the color splitting system is introduced. Compared with the typical color splitting coatings, the color purity, especially for green light, is obviously improved since the ripple in band of the optimized coatings is obviously reduced. The influence of aperture angle for illumination light on uniformity of the color splitting system is discussed and a color aberration correction by means of wedge coating with. gradient thickness is proposed, thus the color uniformity can be obviously improved.

关 键 词：液晶投影显示 分色系统 色纯度 色均匀性 

分 类 号：TN946.1[电子电信—信号与信息处理] TN873[电子电信—信息与通信工程]