大面积高均匀照明的LED阵列设计

LED Arrays Design for Large Area and High Uniform Illumination

为了实现飞机座舱人机工效实验验证平台中的环境光模拟系统在大面积目标面上高均匀的照度分布,采用模拟退火算法结合照度叠加理论模型,主要从光源发光角度和排布方式两个方面阐述大面积高均匀照明的LED阵列设计方法,并且通过实验验证了其准确性。结果表明,采用363个LED光源按照模块化排布的光源阵列在距离1.5 m处的4 m×4 m目标面范围内,光照度均可达到5×10^(4) lx,且光照度均匀性达98.17%。该结果满足高空环境光模拟系统大面积高强度高均匀性的设计要求,可以为在大面积目标面实现照度高均匀性分布的照明系统设计提供参考。

Simulated annealing algorithm combined with illuminance superposition theory model is used to describe the design method of LED arrays scheme for large area high uniform lighting from two aspects of light source luminous angle and arrangement mode in this paper,and the accuracy of the algorithm and conclusion is verified by experiments,in order to solve the problem that the ambient light simulation system in the aircraft cockpit ergonomics experimental verification platform can achieve high uniform illumination distribution on a large area target surface.The results show that the illuminance of the light source arrays arranged according to the modularization of 363 LED light sources can reach 5×10^(4) lx in the range of 4 m×4 m target plane at the distance of 1.5 m,and the uniformity of illuminance is 98.17%.It meets the design requirements of largearea,highintensity,and highuniformity highaltitude ambient light simulation systems,and can provide a reference for the design of lighting systems that achieve highuniform illuminance distribution on largearea target surfaces.