Direct Design of Thin and High-Quality Direct-Lit LED Backlight Systems

Direct Design of Thin and High-Quality Direct-Lit LED Backlight Systems
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薄型高品质直下式 LED 背光系统的直接设计

DOI:
10.1109/jphot.2021.3068746
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发表时间:
2021-04
影响因子:
2.4
通讯作者:
Rengmao Wu
Rengmao Wu
中科院分区:
工程技术4区
文献类型:
--
作者:
Zhanghao Ding;Yingli Liu;Yaoguang Ma;Zhenrong Zheng;Min Wang;Ping Zeng;Jun She;Rengmao Wu

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直下式LED背光源是大面积LCD显示器中的关键部件。现有的依赖点源假设和辐照度反馈的方法在近场紧凑设计中效果较差,设计薄且高质量的背光LED背光灯仍然是一个具有挑战性的问题。在本文中,我们开发了一种直接的方法来设计薄和高品质的背光LED背光系统。在计算透镜轮廓时考虑了LED光源的光展量,避免了繁琐的蒙特卡罗光线追迹,使我们能够获得紧凑的LED照明模块,并实现对背光系统近场辐照度分布的精确控制。两个例子来证明优雅的这种方法在设计薄和高品质的背光LED背光。
The direct-lit LED backlight is a key component in large-area LCD displays. The existing methods which rely on point source assumption and irradiance feedback are less effective in compact designs in near field, and designing thin and high-quality back-lit LED backlights still remains a challenging issue. In this paper, we develop a direct method for designing thin and high-quality back-lit LED backlight systems. The étendue of LED light sources is considered in the numerical calculation of the lens profiles without cumbersome Monte Carlo ray tracing, which allows us to obtain compact LED lighting modules and achieve accurate control of the near-field irradiance distribution of the backlight system. Two examples are presented to demonstrate the elegance of this method in designing thin and high-quality back-lit LED backlights.
DOI: 10.1364/oe.19.0a1022
发表时间: 2011-09
期刊: Optics express
影响因子: 3.8
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