基于单色LED补偿白光LED技术的模拟太阳光谱研究

发布时间：2018-02-02 08:39

本文关键词： 白光LED 单色LED 太阳光谱模拟最小二乘法相关指数　出处：《发光学报》2017年08期 　论文类型：期刊论文

【摘要】：提出一种基于单色LED补偿白光LED技术,模拟日光在可见光范围内的光谱。实际调研了大功率单色LED现状,采用光子在二维空间内联合态密度函数作为单色LED的光谱辐射模型,建立LED模拟仿真数据库。通过求解超定方程组的非负最小二乘解,优化选择不同峰值波长以及半高宽的单色LED与白光LED组合,实现对目标光谱的匹配及太阳光谱的再现。对比研究了白光LED补偿技术和纯单色LED组装技术,并分析了不同种类LED组合对太阳光谱的模拟情况。结果表明,白光LED补偿技术拟合太阳光谱相关指数达到90.74%,优于纯单色LED组装技术。并且当单色LED种类减少时,白光LED补偿技术相比纯单色LED组装技术可以实现更好的模拟效果。该方法对实现基于LED类日光照明具有较好的指导意义。
[Abstract]:A white light LED technique based on monochromatic LED compensation is proposed to simulate the spectrum of sunlight in visible range. The current situation of high power monochromatic LED is investigated. Using the density of states function of photons in two-dimensional space as the spectral radiation model of monochromatic LED, the simulation database of LED is established, and the non-negative least square solution of overdetermined equations is solved. The combination of monochromatic LED and white light LED with different peak wavelength and half maximum width is optimized. The matching of the target spectrum and the reproduction of the solar spectrum are realized. The white LED compensation technology and the pure monochromatic LED assembly technology are compared. The simulation of solar spectrum by different kinds of LED combinations is analyzed. The results show that the correlation index of solar spectrum fitting by white light LED compensation technique is up to 90.74%. It is superior to the pure monochromatic LED assembly technology, and when the monochromatic LED species decrease. White light LED compensation technology can achieve better simulation effect than pure monochromatic LED assembly technology. This method has a good guiding significance for the realization of daylight lighting based on LED.
【作者单位】：大连工业大学光子学研究所;青岛市计量技术研究院;
【基金】：辽宁省科学技术计划(2014026004) 辽宁省高等学校优秀人才计划(LJQ2014055)资助项目~~
【分类号】：TN312.8
【正文快照】： 峰值波长(λ1引言p)的单色LED作为发光模块通过单独调整不同LED的驱动电流来改变光源的输出近年来,大功率单色LED技术的发展扩大了光谱分布[9]。但是单颗LED混合出类日光要求LED在普通照明领域的应用。为了获得健康的LED的颗数较多,存在控制复杂、重复性差、成本照明光源,光谱

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