| 大型LED矩形阵列光斑照度的均匀性研究 |
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| 引用本文： | 刘启能,刘沁.大型LED矩形阵列光斑照度的均匀性研究[J].发光学报,2018,39(5):699-705. |
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| 作者姓名： | 刘启能 刘沁 |
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| 作者单位： | 1. 重庆工商大学 重庆市检测控制集成系统工程实验室, 重庆 400067;
2. 重庆工商大学 计算机科学与信息工程学院, 重庆 400067;
3. 重庆工商大学 设计艺术学院, 重庆 400067 |
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| 基金项目： | 重庆市教委科技项目（KJ1500629）；重庆工商大学科技项目（1552006）资助 |
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| 摘 要： | 应用LED芯片的照度公式以及大型LED矩形阵列照度分布的对称性，建立了研究大型LED矩形阵列照度均匀度的物理模型，推导出计算大型LED矩形阵列照度均匀度的公式。利用该公式研究了大型LED矩形阵列照度均匀度随目标距离、长宽比以及m值的变化规律。得出：照度均匀度随目标距离的增加而非线性地减小；照度均匀度随长宽比的增加而非线性地增大；照度均匀度随m值的增加而近似成线性地增大。这些规律为提高大型LED矩形阵列的照度均匀性提供了理论依据，也为大型LED矩形阵列的照度均匀性设计提供了研究方向和计算方法。弥补了之前研究LED阵列照度均匀性方法上的不足。
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| 关 键 词： | 发光二极管 矩形阵列 光斑半径 均匀度 |
| 收稿时间： | 2017-08-15 |
Illumination Uniformity of Large LED Rectangular Array |
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| LIU Qi-neng,LIU Qin.Illumination Uniformity of Large LED Rectangular Array[J].Chinese Journal of Luminescence,2018,39(5):699-705. |
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| Authors: | LIU Qi-neng LIU Qin |
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| Institution: | 1. Laboratory of Test Control Integrated System Engineering, Chongqing Technology and Business University, Chongqing 400067, China;
2. College of Computer Science and Information Engineering, Chongqing Technology and Business University, Chongqing 400067, China;
3. Institute of Design and Art, Chongqing Technology and Business University, Chongqing 400067, China |
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| Abstract: | Using the illumination formula of single LED wick and the symmetry of large LED rectangular array illumination distribution, a physical model for the illumination uniformity of large LED rectangular arrays was established. The illumination uniformity of large LED rectangular array was derived. This formula is used to study the illumination uniformity of large LED rectangular arrays with the target distance and the ratio of length to width and the m values. The illumination uniformity doesn't linearly decrease with the increasing of the target distance, doesn't linearly increase with the increasing of the ratio of length to width, and linearly increases with the increasing of m value. These rules provide theoretical basis for improving the uniformity of large LED rectangular arrays, the research direction and calculation method are provided for the illumination uniformity design of large LED rectangular array. It makes up for the lack of the uniformity of LED array illumination. |
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| Keywords: | LED rectangular array spot radius uniformity |
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