【摘要】 在已提出的等光强带聚焦菲涅耳透镜的基础上,对其建立光学模型,利用蒙特卡罗光线追迹法(MCRT)对透镜的聚光性能进行模拟,并与传统的线聚焦菲涅耳透镜进行对比,结果表明在相同条件下等光强带聚焦菲涅耳透镜的聚光均匀性和光学效率均优于线聚焦透镜。对带聚焦菲涅耳透镜的各特性参数的分析结果表明,较高的焦距可提高带聚焦菲涅耳透镜的光学效率和聚光倍数。最后分析了南北向跟踪误差对该聚光系统影响。更多还原

【Abstract】 On the basis of the previously proposed principle of strip-focus Fresnel lens,an optical model was developed.The optical concentrating properties of linear Fresnel lens and strip-focus Fresnel lens were simulated by the means of Monte Carlo Ray Tracing Method(MCRT),and the results showed that the strip-focus Fresnel lens have a higher uniformity and efficiency than the linear Fresnel lens under the same conditions.Relationships of several characteristic parameters of the strip-focus Fresnel lens were analyzed and the results indicated that a larger focus length can improve the optical efficiency and concentration ratio of the strip-focus Fresnel lens.The effect of the North-South tracking error on the system performance was also analyzed.更多还原