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首页> 外文会议>Nonimaging optics: Efficient design for illumination and solar concentration VI >Skylight: a Hollow Prismatic CPC
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Skylight: a Hollow Prismatic CPC

机译：天窗：空心棱镜

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摘要

Many applications involve the use of a compound parabolic concentrator (CPC) like, natural lighting, thermal applications, optics for illuminators, optical fibre coupling and solar energy. The use of a CPC in reverse mode for natural lighting gives the chance to use it as a lighting skylight in ceilings because light output is controlled inside the design angle, on the contrary having a low flux transfer ratio because of the reduced area of the entrance pupil regarding exit pupil. The authors propose an innovative 3D hollow prismatic CPC (HPCPC) made of a dielectric material, which has a high efficiency comparing it with aluminium CPC. The basic idea is to use a hollow prismatic light guide with CPC shape. This paper reports 2D, 3D design and numerical analysis by ray-tracing software, also experimental results are shown. The system works almost like a true CPC when light enters through standard entrance pupil and also collect light that enters outside entrance pupil. Performance and efficiency of the prismatic CPC is in average 300% higher than standard aluminium CPC for collimated light in a range from 0° to 85°. A prototype has been developed and tested.
机译：许多应用涉及复合抛物线聚光器（CPC）的使用，例如自然照明，热应用，照明器的光学器件，光纤耦合和太阳能。在自然采光的反向模式下使用CPC可以将其用作天花板的采光天窗，因为光输出被控制在设计角度之内，相反，由于入口面积的减小，其光通量传递率也很低关于出瞳的学生。作者提出了一种创新的由介电材料制成的3D空心棱镜CPC（HPCPC），与铝CPC相比，它具有很高的效率。基本思想是使用具有CPC形状的空心棱镜光导。本文介绍了通过光线跟踪软件进行的2D，3D设计和数值分析，并显示了实验结果。当光通过标准入射光进入并收集入射到外部入射光的光时，该系统几乎像真正的CPC。对于0°至85°范围内的准直光，棱镜CPC的性能和效率平均比标准铝CPC高300％。已开发并测试了原型。

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