LED集成封装的一次光学设计与优化

First Optical Design and Optimization of LED Integrated Package

当前许多企业缺乏对集成光源严格的光学设计与优化,依据经验开模,效率低,成本高。本文采用蒙特卡洛非序列光线追迹方法,利用光学仿真软件Tracepro对集成光源进行的一次光学设计与优化,从LED集成封装的结构出发,设计出7WCOB光学模型,通过逐一改变芯片间距、反光杯底部半径、深度和硅胶折射率四个变量来获得各个参数的最优值。实验结果表明芯片间距、反光杯底部半径、深度和硅胶折射率对光源出光效率和光强分布影响具有一定规律性,这些规律对于实际生产具有指导意义。

Nowadays many enterprises lack of strict optical design and optimization to integrated light source, and the mould is opened just based on experience, which has low efficiency and high cost. Non-sequential Monte Carlo my tracing method and optical simulation software Tracepro are used to do first optical design and optimization of integrated light source. Based on the structure of LED integrated package, a 7 W COB optical model is developed. Then, four variables of chip distances, bottom radius, depths of reflector cup and refractive indexes of silica gels are changed one by one to obtain the most excellent value of each parameter. The experimental results indicate some laws about the impact of chip distances, bottom radius, depths of reflector cup and refractive indexes of silica gels on luminous efficiency and light intensity distribution, which has guiding significance on the actual production.