摘要
近年来,人们对LED的出光效率和出光的效果进行了大量的研究和改进。有研究机构做出了六边形的LED芯片,实践中在光学性能、出光效率和成本上比传统的LED芯片有较大的优势。因此利用TracePro仿真软件对不同形状的LED芯片进行模拟,并通过对比验证仿真结果的正确性和仿真方法的可行性。仿真结果表明,六边形芯片的LED模型在光线扭曲和暗点的问题上比传统芯片的LED模型得到了明显的改善,照度均匀性得到明显的增强,光能的输出效率上也有一定的提高。对比两种芯片的LED模型在当下比较常见的封装模式下的光学性能,结果表明六边形芯片的LED模型在光强或均匀度上都要好于正方形芯片的LED模型。
Many researches have been done to improve the output efficiency and lighting effects of the LED in recent years.Some research institutions have made hexagonal LED chip with great advantages at optical properties,output efficiency and cost compared with conventional LED chip.Therefore,the TracePro simulation software was utilized to simulate the different shapes of the LED chips in this work.The correctness and feasibility were verified by comparing the simulation results.The simulation results showed that the hexagonal LED chip model did conduced to distorted light and dark spots improving,illumination uniformity enhancing and output efficiency increasing of optical energy compared with the traditional chip LED model.By Contrasting the optical properties of the LED model in the common package mode of the two chips,the hexagonal chip LED model preformed better in both the light intensity and uniformity.
出处
《真空电子技术》
2014年第2期43-48,共6页
Vacuum Electronics
基金
国家"973"计划项目(2012CB619301)
国家"863"计划项目(2011AA03A111)
中央高校基本科研业务费专项资金资助项目(2012121014
CXB2011029)
