Wu Weichen, Wang Hui, Jin Guofan, Zhu Jun
Opt Lett. 2020 Sep 15;45(18):5140-5143. doi: 10.1364/OL.398924.
In traditional optical design, a starting point is selected and coefficients optimization is then performed using software. The process requires considerable time and the involvement of a human with design skills and experience. In this Letter, a fast automatic method for freeform imaging systems design is proposed. Using a plane system as the input, a freeform optical system with high image quality can be designed automatically at high speed. The method consists of system construction and system correction, combining the advantages of the direct design method and the methods based on aberration analysis. After system construction generates a system with fundamental optical parameters, system correction is an iterative process that alternates between image plane correction and surfaces correction to improve the image quality to a high level. Two examples required 5 min 56 s and 6 min 10 s to design freeform systems with near-diffraction-limit image quality.
在传统光学设计中，需先选定一个起始点，然后使用软件进行系数优化。该过程需要相当长的时间，且需要具备设计技能和经验的人员参与。在本信函中，提出了一种用于自由曲面成像系统设计的快速自动方法。以平面系统作为输入，可自动高速设计出具有高图像质量的自由曲面光学系统。该方法由系统构建和系统校正组成，结合了直接设计方法和基于像差分析方法的优点。在系统构建生成具有基本光学参数的系统后，系统校正是一个迭代过程，在像平面校正和表面校正之间交替进行，以将图像质量提高到高水平。设计具有近衍射极限图像质量的自由曲面系统的两个示例分别耗时5分56秒和6分10秒。
