亮室条件下的亮度对比度测量新方法(英文)

The New Process of Measuring Method for Luminance Contrast under Bright Room Condition

亮室对比度是评价平板显示器视觉质量的重要参数。尤其是对于移动显示屏,亮室对比度的测定应该考虑各种光照明条件,例如应该在不同照度水平和不同光谱分布的光照下进行测定。本文介绍了首先介绍了荧光灯照明方法和球内积分球照明方法,之后详细介绍了一种新的基于球外积分球漫射照明的测试方法。此外,为了克服标准照明条件中标准光源(CIE A, D65)难以实现的难题,本文提出了光谱辐亮度系数法。

Luminance contrast under bright room condition is a crucial parameter in the visual quality assessment of Flat Panel Displays （FPDs）. Especially for mobile displays, various ambient conditions should be considered in determining luminance contrast, such as different illumination level and spectrum. Both fluorescent lamp （s） illumination measurement and sphere-inside diffuse illumination measurement are introduced first. In order to provide a more accurate and convenient solution, a new measuring process based on the sphere-outside diffuse illumination for luminance contrast under bright-room condition is detailed. And in luminance contrast determining, CIE standard illuminant A and D65 are proposed as illuminanting source of warm-light ambient condition and daylight ambient condition, to remove the embarrassment of implementing specified standard illuminanation （CIE A, D65）, the spectroradiometric method is put forward as a complement to perfect measurement.