激光与光电子学进展, 2017, 54 (10): 100801, 网络出版: 2017-10-09
基于几何光学的高动态范围视频显示系统背光模组的设计与实现 下载: 693次
Design and Implementation of Backlight Module of High Dynamic Range Video Display System Based on Geometrical Optics
几何光学 高动态范围 亮度均匀性 LED间距 混光距离 geometric optics high dynamic range luminance uniformity LED spacing light mixing distance
摘要
从几何光学的角度设计并实现高动态范围视频显示系统的背光模组。首先明确背光模组亮度均匀性对高动态范围视频显示系统的重要影响, 并通过斯派罗法则确定背光模组LED光源的间距、混光距离等设计参数, 随后利用AutoCAD软件进行三维建模, 利用TracePro、LightTools光学软件进行仿真实验, 并通过改造现有显示屏幕的背光模组来实现高动态范围视频显示系统。结果显示: 设计与实现的背光模组能够达到高动态范围视频显示系统的要求, 液晶面板的峰值亮度可达2500 cd·m-2, 亮度均匀性为95.85%。
Abstract
The backlight module of high dynamic range video display system based on the geometrical optics is designed and accomplished. First, the important influence of luminance uniformity of backlight module on the high dynamic range video display system is determined. And the design parameters, such as the spacing and the light mixing distance of LED light sources of backlight module, are determined by Sparrow′s criterion. Then, the AutoCAD software is used to conduct 3D modeling. TracePro and LightTools are taken in the simulation experiment. The high dynamic range video display system is built by modifying the backlight module of the existing display screen. The results show that the designed and accomplished backlight module in this paper can meet the requirements of high dynamic range video display system. Peak brightness of liquid crystal display panel can reach 2500 cd·m-2 and uniformity of luminance is up to 95.85%.
张涛, 邱亮, 巫红英, 雷志春. 基于几何光学的高动态范围视频显示系统背光模组的设计与实现[J]. 激光与光电子学进展, 2017, 54(10): 100801. Zhang Tao, Qiu Liang, Wu Hongying, Lei Zhichun. Design and Implementation of Backlight Module of High Dynamic Range Video Display System Based on Geometrical Optics[J]. Laser & Optoelectronics Progress, 2017, 54(10): 100801.