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OPTIMIZATION OF SPECTRUM OF TUNABLE LED COLOUR LIGHT SOURCE

机译：优化可调led彩光光源光谱

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Tunable LED colour light sources, which enable tuning of spectrum of output light, are today widely used in different areas. In photometrical laboratory they could be used as a tunable luminance standard source which could replace many other standard sources like A (incandescent), D (daylight), E (equal energy) of F (fluorescent) and would even allow calibrations of instruments at arbitrary spectrum. When building such a tunable colour lighting source based on LEDs, the first important question is always what number of LEDs and what LEDs to choose. Soon after the next important question arise: how to control the LEDs to obtain the output spectrum which is close enough to the wanted one. Different methods can be used to optimize the number of LEDs as well as their peek wavelengths and latter on also for the optimization of the output spectrum of the tunable light source. The method can be chosen based on the wanted output spectrum or on the wanted "goodness of fit" of the produced arbitrary spectrum. The next decision should be if only the control will be used or the source will be regulated with use of measurement device and regulation loop. And at the end also the number of needed steps in a regulation algorithm to obtain the needed "goodness of fit" plays an important role. In the paper the experiences of the authors with the building of 24-channel tunable lighting source at Physikalisch-Technischen Bundesanstalt in Germany and of 13-channel tunable lighting source at University of Ljubljana, Slovenia are described.
机译：可调谐LED颜色光源，可实现输出光谱的调整，今天广泛用于不同的区域。在光学实验室中，它们可以用作可调亮度标准源，其可以替代诸多其他标准来源，如（白炽灯），D（日光），F（荧光灯）的E（等能量），甚至允许在任意的仪器校准光谱。当基于LED构建这种可调谐彩色照明源时，第一个重要问题总是始终是哪个LED以及选择的LED。在下一个重要的问题之后不久：如何控制LED以获得足够接近的输出频谱到所需的问题。可以使用不同的方法来优化LED的数量以及它们的PEEK波长以及后者还用于优化可调谐光源的输出频谱。可以基于所需的输出频谱或所需的任意光谱的所需“拟合的良好度”来选择该方法。如果仅使用控制，则应使用控制或使用测量设备和调节循环来调节源。最后，在规范算法中获得所需步骤的数量，以获得所需的“合适的”起着重要作用。在论文中，描述了作者在德国Physikalisch-Technischen Bundesanstalt的24渠道可调照明源建设的经验，斯洛文尼亚卢布尔雅那大学的13通道调谐照明源。

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