Liao Yiqi, Gao Shaohua, Bai Jian, Wang Kaiwei
Opt Express. 2023 Jul 3;31(14):23491-23506. doi: 10.1364/OE.495188.
In this work, a universal algorithm for designing a panoramic annular lens (PAL) system free from stray light is proposed. The impact of a given stray light path to the optical system could be estimated without running a full stray light analysis process, which allows designers to eliminate troublesome stray light paths by optimizing lens parameters at an early stage of optical design. A 360° ×(40°-100°) PAL system is designed and implemented to verify the proposed method. Simulation shows that the point source transmittance (PST) decreases by 2 orders of magnitude at a specific field-of-view (FoV) range after optimizing the system. Experimental results show perfect consistency with the simulation predictions, which indicate that two types of stray light are totally eliminated in the demonstrated system. This stray light analysis and suppression method provides a promising approach for the research and development of ultra-wide angle high performance optical systems.
在这项工作中，提出了一种用于设计无杂散光的全景环形透镜（PAL）系统的通用算法。无需运行完整的杂散光分析过程，就可以估计给定杂散光路径对光学系统的影响，这使设计人员能够在光学设计的早期阶段通过优化透镜参数来消除麻烦的杂散光路径。设计并实现了一个360°×（40° - 100°）的PAL系统来验证所提出的方法。仿真表明，优化系统后，在特定视场（FoV）范围内，点源透过率（PST）降低了2个数量级。实验结果与仿真预测完全一致，这表明在演示系统中两种类型的杂散光被完全消除。这种杂散光分析和抑制方法为超宽角高性能光学系统的研发提供了一种很有前景的方法。
