This article investigates the discrepancy between the theoretical and the experimental optical characterisation results of a Fresnel Lens - silicon on glass (SOG), as a primary optical component toward UHCPV of >3000 suns design (Shanks et al., 2018). All the equations were elaborated for single- and multi-junction solar cells, emphasising the performance when the focal spot area is larger or lesser than the solar cell area. This simple prediction approach of optical characterisation has shown a strong agreement between the theoretical and experimental results of the multi-junction solar cell with a discrepancy of 2% at 7.7 W (77 suns) and 6% on the average cross a solar irradiance on the cell from 3.1 W to 7.7 W corresponding to 31 suns – 77 suns in concentration ratio. A theoretical analysis of the optical performance for a 1/4 of the system grouping three optical interfaces is performed to estimate the optical loss and its influence on the optical efficiency and optical concentration ratio.

本文研究了菲涅耳透镜的理论和实验光学表征结果之间的差异 - 玻璃上硅 (SOG)，作为实现 >3000 suns 设计的 UHCPV 的主要光学组件（Shanks 等人，2018 年）。所有方程都针对单结和多结太阳能电池进行了阐述，强调了焦斑面积大于或小于太阳能电池面积时的性能。这种简单的光学表征预测方法表明，多结太阳能电池的理论和实验结果具有很强的一致性，在 7.7 W（77 个太阳）下的差异为 2%，在平均交叉太阳辐照度上的差异为 6%。电池从 3.1 W 到 7.7 W 对应于 31 个太阳 – 77 个太阳的聚光比。