High-color-rendering light sources consisting of a 350-nm ultraviolet light-emitting diode and three-basal-color phosphors
High-color-rendering light sources consisting of a 350-nm ultraviolet light-emitting diode and three-basal-color phosphors
复制标题
DOI：
10.1063/1.1580649
复制
发表时间：
2003-06-02
影响因子：
4
通讯作者：
Kobayashi, N
中科院分区：
文献类型：
--
作者：
Nishida, T;Ban, T;Kobayashi, N
对由350 nm紫外发光二极管（UV-LED）和三基色荧光粉组成的光源的高显色性（HCR）潜力进行了模拟和实验验证。通过使用AlGaN基UV-LED作为350 nm波长的激发源，我们测量了三基色荧光粉的荧光光谱，并基于国际照明委员会标准光源D-75、D-65、D-55、D-50、C和A模拟了最佳荧光粉混合物，HCR指数（R-a）超过92。我们通过实验获得了与白炽型标准光源A的R-a= 89相似的R-a= 86，证实了由350 nm UV-LED和三基色荧光粉组成的光源的HCR潜力。如此高的R-a是由于高度单色的UV-LED发射以及UV激发（350 nm）和可见荧光之间的宽光谱分离。这种组合还提供了具有独立于发射方向的高度稳定的颜色的漫射的非漫射光源。我们还研究了激发波长和荧光发射波长之间的分离对于实际照明应用的重要性。(C)2003年，美国物理学会。
The high-color-rendering (HCR) potential of the light sources consisting of 350-nm ultraviolet light-emitting diodes (UV-LED) and three-basal-color phosphors was simulated and experimentally confirmed. By using an AlGaN-based UV-LED as an excitation source at the 350-nm wavelength, we measured fluorescence spectra of three-basal-color phosphors, and simulated the optimum phosphor mixture based on the Commission Internationale de l'Eclairage standard light sources D-75, D-65, D-55, D-50, C, and A, with HCR indexes (R-a) over 92. We confirmed the potential of HCR of this light source consisting of 350-nm UV-LED and three-basal-color phosphors, by obtaining R-a=86similar to89 of the incandescent type of standard light source A experimentally. Such high R-a are due to the highly monochromatic UV-LED emission and the wide spectral separation between the UV excitation (350 nm) and visible fluorescences. This combination also provides a diffusive, nonglare light source with highly steady color independent of the emission orientation. We also examined the importance of the separation between the excitation wavelength and the fluorescence emission wavelength for practical lighting applications. (C) 2003 American Institute of Physics.