A Practical Method to Design Reflector-Based Light-Emitting Diode Luminaire for General Lighting

Q3 Engineering

Advances in Optoelectronics Pub Date : 2018-10-18 DOI:10.1155/2018/7138592

Jinren Yan

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Abstract

A reflector-based light-emitting diode (LED) luminaire structure that can achieve a large cut-off angle for general lighting is presented in this work. The proposed lighting unit mainly consists of a spherical reflector and a primary packaging lens that contains an aspheric surface and a spherical surface. The light rays emitted from the LED light source are well controlled by the spherical reflector and the aspheric surface of the lens for the purpose of obtaining a uniform illumination on the target surface. Both the ideal Lambertian LED and non-Lambertian LED light sources were employed to validate the proposed structure and the performance of the designed lighting units was analyzed by optical simulation. The results show that the light utilization efficiencies and the estimated uniformities are 92.96% and 91.11% for ideal Lambertian LED-based lighting unit and 93.31% and 91.64% for non-Lambertian LED-based lighting unit, respectively. Further analysis shows that the tolerances of horizontal, vertical, and rotational deviation of the both lighting units were about 2.0 mm, 1.0 mm, and 1.0°, respectively.

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一种基于反射体的普通照明用发光二极管灯具设计方法

本文提出了一种基于反射镜的发光二极管(LED)照明结构，该结构可以实现大截止角的普通照明。所提出的照明单元主要由球面反射器和包含非球面和球面的主封装透镜组成。LED光源发出的光线受到球面反射器和透镜非球面的良好控制，从而在目标表面上获得均匀的照明。采用理想的兰伯特LED光源和非兰伯特LED光源对所提出的结构进行了验证，并通过光学仿真分析了所设计的照明单元的性能。结果表明，理想的兰伯特led照明单元的光利用效率和均匀度分别为92.96%和91.11%，非兰伯特led照明单元的光利用效率和均匀度分别为93.31%和91.64%。进一步分析表明，两种照明装置的水平、垂直和旋转偏差的公差分别约为2.0 mm、1.0 mm和1.0°。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Advances in Optoelectronics ENGINEERING, ELECTRICAL & ELECTRONIC-

CiteScore

1.30

自引率

0.00%

发文量

期刊介绍： Advances in OptoElectronics is a peer-reviewed, open access journal that publishes original research articles as well as review articles in all areas of optoelectronics.