Yellow-ring measurement of white LED in various lighting environments
Yellow-ring measurement of white LED in various lighting environments
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DOI：
10.1007/s10043-013-0042-1
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发表时间：
2013-03
期刊：
影响因子：
1.2
通讯作者：
Ching-Ching Yang-Ching;H. Tsai;Kuo-Cheng Huang
中科院分区：
文献类型：
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作者：
Ching-Ching Yang-Ching;H. Tsai;Kuo-Cheng Huang
当投影到不同背景上时，白色LED（WLED）具有各种黄环（YR）效果。这些效果由WLED投射到的材料决定。在我们以前的研究中，YR现象被表示为黄环指数（YRI），其包括黄光强度（Y）和光强度（I），并且YRI曲线的最大值是决定YR现象程度的关键光学参数。本研究提出了一个改进的评价模型，使用YR度和四个YR图（YRI小于5，5至10，10至15，大于15）作为标准的WLED质量控制。
White LEDs (WLEDs) have various yellow-ring (YR) effects when projected onto differing backgrounds. These effects are determined by the material that the WLED is projected onto. In our previous study, the YR phenomenon was expressed as the yellow-ring index (YRI), which comprises yellow light intensity (Y) and light intensity (I), and the maximum value of the YRI curve is a crucial optical parameter for determining the degree of the YR phenomenon. This study presents a modified evaluation model using YR degree and four YR diagrams (the YRIs are less than 5, 5 to 10, 10 to 15, and greater than 15) as the criterion for WLED quality control.