均匀聚光菲涅尔聚光器设计及光学性能研究

Design and Optical Performance Study of a Uniform Concentrating Fresnel Concentrator

摘要: 提出了一种均匀聚光菲涅尔聚光器设计方法，聚光器基于两个槽面相互垂直的线性菲涅透镜构成。根据几何光学原理，计算线性菲涅尔透镜的侧面角和透镜凹槽的边界点坐标，得到透镜的设计参数；再应用CAD软件对设计的菲涅尔聚光器进行建模，将模型导入TracePro软件进行光线追迹，并分析其聚光性能。仿真结果验证了所设计聚光器的优异性能，其聚光效率达到86.83%，辐照均匀度达到了70%。这表明所提出的设计方法在有效提升光能捕获能力的同时，还能在接收面上维持高度均匀的能量分布。

Abstract: This paper presents a novel design method for a Fresnel concentrator capable of achieving uniform illumination. The concentrator is constructed by orthogonally combining two linear Fresnel lenses with mutually perpendicular grooves. Based on the principles of geometric optics, key design parameters for the lenses were determined, including the facet angles and the boundary point coordinates of the grooves. A model of the proposed Fresnel concentrator was developed using CAD software and subsequently imported into TracePro for rigorous ray-tracing analysis to evaluate its optical performance. Simulation results confirm the excellent performance of the designed concentrator, demonstrating a concentration efficiency of 86.83% and an irradiation uniformity of 70%. This indicates that the proposed method effectively enhances light capture capability while maintaining a highly uniform energy distribution on the receiver.