LED大型圆形阵列的光斑照度均匀性  

Uniformity of Light Spot Illumination of Large LED Circular Array

作　　者：刘沁[1] 刘启能[2] 

机构地区：[1]重庆工商大学设计艺术学院,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

出　　处：《人工晶体学报》2018年第1期213-218,230,共7页Journal of Synthetic Crystals

基　　金：重庆市教委科技项目基金(KJ1500629);重庆工商大学科研项目(KJ150021)

摘　　要：应用LED芯片的照度公式以及LED大型圆形阵列照度分布的对称性,建立了研究LED大型圆形阵列照度均匀度的物理模型,推导出计算LED大型圆形阵列照度均匀度的公式。利用该公式研究了LED大型圆形阵列照度均匀度随阵列半径、随m值以及随目标距离的变化规律。得出:照度均匀度随阵列半径的增加而非线性地增大;照度均匀度随m值的增加而非线性地增大;照度均匀度随目标距离的增加而非线性地减小。这些规律为提高LED大型圆形阵列的照度均匀性提供了理论依据,也为LED大型圆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阵列照度均匀性其研究方法上的不足。Using the illumination formula of single LED wick and the symmetry of large LED circular array illumination distribution, a physical model for the illumination uniformity of large LED circular arrays is established. The uniformity of illumination of large LED circular array is derived. This formula is used to study the uniformity of illumination of large LED circular arrays with the array radius and the m values and the target distance. The uniformity of illumination no linearly increases with the increase of array radius, the uniformity of illumination no linearly increases with the increase of m value, the uniformity of illumination no linearly decreases with the increase of target distance. These rules provide theoretical basis for improving the uniformity of large LED circular arrays, the research direction and calculation method are provided for the illumination uniformity design of large LED circular array. It makes up for the lack of the uniformity of LED array illumination.

关 键 词：发光二极管 均匀度 圆形阵列 光斑半径 

分 类 号：O435[机械工程—光学工程] O432.2[理学—光学]