摘要
为了明晰高端应用的CRT和LCD显示器的色光特性,测试分析了两类各一个显示屏幕在暗室和明室环境中色光的位置均匀性、光亮度和色度、CIE_xy色品域,及其随水平观测角度的变化等特性。实验结果表明:两个显示器在暗室环境中,7个不同色光在屏幕9个位置面法线方向的颜色标准偏差在1.8以内,明室中会增大为3.0以内。明室、暗室中,色光的性能随水平观测角而变化;面法线方向上,LCD显示器的光亮度及色品域均大于CRT显示器;随着观测方向与屏幕面法线方向夹角的增加,均表现为光亮度减小、颜色变化增大,在可接受的颜色差异内,CRT显示器形成面法线水平方向两侧约±25°角的可视范围,而LCD的情况降低为±20°左右;此外,该可视角度内,两个显示器各自的色品域几乎保持不变。
In order to understand the light and color properties of the high-end displays, some characteristics, including light uniformity on different areas on screen, lightness and chromatics, CIE_xy chromaticity gamut, and their change with viewing directions, were measured for one CRT and one LCD monitors. The experiments showed that the standard color differences of seven lights on nine areas were all less than 1.8 in dark environment, and the case of the light environment was 3.0. Furthermore, all the properties would vary with viewing direction. In the normal direction, the lightness and the gamut of the LCD were larger than that of the CRT. With the angle augment, between the viewing and normal directions, the lightness would decrease and the color difference would enlarge. The angle range in which the color difference could be acceptable, was about ±25° for the CRT, and value would reduce to±20° for the LCD at the same time, the gamuts nearly kept unchanged for the two monitors respectively.
出处
《北京印刷学院学报》
2008年第2期1-5,共5页
Journal of Beijing Institute of Graphic Communication
基金
北京印刷学院引进人才资助项目(E-d-07-06)
北京市教委资助项目(KM200810015002)
关键词
显示器
发光均匀性
光亮度
色品域
monitor
light uniformity lightness chromaticity gamut