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High efficiency 90° elbow for light guides

机译:高效90°弯头,用于光导

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Transmission of light through a 90 degrees elbow in a hollow light guide is an important step in the development of natural lighting applications. In this paper we present a new design that has more than 260% higher efficiency in flux transfer than a standard bending system for hollow and aluminum light guides. The clue of this new system is to minimize the light angle at the output of the elbow, in such way that it is possible to guide light at higher distances because of the fewer reflections in the light guide.rnThe system works properly for prismatic light guides but is also suitable for aluminum guides where the reduction of reflections permit the use of cheaper aluminum or the increase in length maintaining flux transfer. Also this reduction of reflections in aluminum light guide derives in less change of chromatic coordinates.
机译:通过空心光导中的90度弯头传输光是自然照明应用开发中的重要一步。在本文中,我们提出了一种新设计,其通量传输效率比中空和铝制光导的标准弯曲系统高出260%以上。该新系统的提示是将弯头输出处的光角度最小化,从而可以导光,因为光导中的反射较少,所以可以在更长的距离处导光。rn该系统适用于棱柱形光导但也适用于铝制导轨,在这种情况下,减少反射可允许使用更便宜的铝或增加保持通量的长度。同样,铝光导中反射的这种减少导致色坐标的变化较小。

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