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三芯片发光二极管(LED)光谱选择性多,整体性能可控性好。通过合成特定色温的多种三芯片LED光源,并研究辐射发光效率(LER),中间视觉效率(MER),生理辐射效率(CER)等性能的变化范围,为光谱优化提供理论基础。从6组在色度图上分布相对均匀的单芯片LED光源光谱中,选择其中3组进行组合,合成2000 K,3000 K,4000 K,5000 K以及6000 K五种色温光源,计算相应的ηLER、S/P值和acv值并进行函数拟合,得到相关性能的范围。结果表明,各色温下相应的ηLER、S/P值和acv值变化范围较大,分别相差达到0.4、0.6以及0.4以上。整体趋势与传统研究结果一致,色温越高,S/P值和acv值相应越大,但是低色温光源也可达到较高的S/P值和acv值,高色温光源也可达到较低的S/P值和acv值。三芯片LED光谱优化能够有效的提升整体性能。
Three-chip light-emitting diode (LED) spectral selectivity, the overall performance controllable. By synthesizing a variety of three-chip LED light sources with specific color temperature and studying the range of variation of performance such as LER, MER, and CER, the theoretical basis for spectral optimization is provided. From the six groups of single-chip LED light sources with relatively uniform distribution on the chromaticity diagram, three groups were selected to synthesize five color temperature light sources of 2000 K, 3000 K, 4000 K, 5000 K and 6000 K, and the corresponding ηLER , S / P value and acv value and function fitting, get the range of relevant performance. The results showed that the corresponding values of ηLER, S / P and acv varied greatly at each color temperature with the difference of 0.4,0.6 and 0.4 respectively. The overall trend is consistent with the traditional research results. The higher the color temperature, the larger the S / P value and the acv value. However, the low color temperature light source can achieve higher S / P value and acv value, and the high color temperature light source also achieves a lower S / P value and acv value. Three-chip LED spectrum optimization can effectively enhance the overall performance.