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Numerical analysis of lateral illumination lightpipes using elliptical grooves

机译:椭圆形凹槽侧面照明光导管的数值分析

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Lightpipes are used for illumination in applications such as back-lighting or solar cell concentrators due to the high irradiance uniformity, but its optimal design requires several parameters. This work presents a procedure to design a square lightpipe to control the light-extraction on its lateral face using commercial LEDs placed symmetrically in the lightpipe frontal face. We propose the use of grooves using total internal reflection placed successively in the same face of extraction to control the area of emission. The LED area of emission is small compared with the illuminated area, and, as expected, the lateral face total power is attenuated. These grooves reduce the optical elements in the system and can control areas of illumination. A mathematical and numerical analysis are presented to determine the dependencies on the light-extraction.
机译:由于高的辐照均匀性,光导管在诸如背光或太阳能电池集中器等应用中用于照明,但是其最佳设计需要几个参数。这项工作提出了一个程序,设计一个方形的光导管,以使用对称放置在光导管正面的商用LED来控制其侧面的光提取。我们建议使用通过将全内反射顺序放置在提取的同一面上的凹槽来控制发射区域。与发光区域相比,LED的发光区域较小,并且如预期的那样,侧面总功率被衰减。这些凹槽减少了系统中的光学元件,并可以控制照明区域。进行了数学和数值分析,以确定对光提取的依赖性。

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