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首页> 外文期刊>Mathematical Problems in Engineering >Mathematical Analysis of Nonimaging Fresnel Lenses Using Refractive and Total Internal Reflection Prisms for Sunlight Concentration
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Mathematical Analysis of Nonimaging Fresnel Lenses Using Refractive and Total Internal Reflection Prisms for Sunlight Concentration

机译：使用折射和全内反射棱镜对非成像菲涅尔透镜进行阳光聚焦的数学分析

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During the design of nonimaging Fresnel lenses, the reflectance losses at the refracting surfaces should be taken into account because, depending on the parameters of each prism, semiacceptance angle theta(in) and output angle theta(out), these losses can decrease the total efficiency of the lens. On this subject, an analysis and comparison between a Fresnel lens composed only of refractive prisms and others with total internal reflection (TIR) prisms are presented and, using this information, a design method of hybrid Fresnel lenses composed of refractive and TIR prisms is proposed to reduce reflectance losses from the surface. The work presents the radiance profile and transmittance for a Fresnel lens of each type, to compare its advantages and disadvantages providing an alternative for the design and construction of nonimaging Fresnel lenses according to optical devices requirements.
机译：在设计非成像菲涅耳透镜时，应考虑折射面的反射损耗，因为根据每个棱镜的参数，半入射角theta（in）和出射角theta（out），这些损耗会降低总损耗。镜头的效率。在这个问题上，提出了仅由折射棱镜组成的菲涅耳透镜与具有全内反射（TIR）棱镜的菲涅尔透镜之间的分析和比较，并利用此信息，提出了由折射棱镜和TIR棱镜组成的混合菲涅耳透镜的设计方法减少表面反射损失。这项工作介绍了每种菲涅耳透镜的辐射曲线和透射率，以比较其优缺点，从而根据光学设备的要求为非成像菲涅耳透镜的设计和构造提供了一种选择。

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