Flat Plate Type Fresnel Lens Design and Its Combinatorial Optimization
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摘要: 为了解决传统的球面菲涅尔透镜模具加工工艺难度大、精度低、制作成本高等问题, 提出一种中心透镜为球面、外侧环带为倾斜面的平板菲涅尔透镜的设计方法, 并进行了基于多平面拟合和基于多焦点的组合优化设计, 给出了具体设计实例, 进行了光学仿真.结果表明:优化后菲涅尔透镜聚光效率达93%, 聚焦光斑能量均匀性4.9, 满足设计要求.Abstract: To solve the problem that the traditional spherical Fresnel lens mold processing was difficult, low precision and high cost, a Fresnel lens design was presented to gain higher optical efficiency. In this design, spherical surface for center lens and inclined plane for outer rings based on the result of multiplane fitting and multi-focal combinatorial optimization were employed. A design case was given as well as its optical simulation.Resultsshow that, after optimization, the Finel lens concentrator efficiency up to 93%, the focused beam energy uniformity 4. 9, meet the design requirements.
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Keywords:
- Fresnel lens /
- focal spot /
- high concentrating photovoltaic
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