Qu Zheng, Zhong Xing, Zhang Kun, Li Lei, Wang Yuanhang
Appl Opt. 2022 May 1;61(13):3630-3640. doi: 10.1364/AO.457092.
Currently, an off-axis reflective optical system is designed always from a coaxial initial system, and good imaging performance depends heavily on the choice of good initial configurations. This paper first establishes an imaging-performance evaluation function of the off-axis initial configuration based on nodal aberration theory and Seidel aberration theory. An automatic optimization method of the off-axis initial configuration using the global simulated annealing algorithm is proposed. Two design examples of off-axis three-mirror reflective optical systems are used to demonstrate the effectiveness and simplicity based on the initial configuration design method. Example 1: a series of optical systems with a large 10×3 field of view (FOV) is quickly and simply implemented using simple surfaces, and the optical systems exhibit perfect imaging quality. Example 2: starting from the good automatic initial configurations, two larger 20×3 FOV optical systems with focal lengths of 500 mm and -numbers of five are designed, resulting in good imaging performance and providing a valuable design reference.
目前，离轴反射光学系统总是从同轴初始系统设计而来，良好的成像性能在很大程度上取决于良好初始构型的选择。本文首先基于节点像差理论和赛德尔像差理论建立了离轴初始构型的成像性能评价函数。提出了一种利用全局模拟退火算法的离轴初始构型自动优化方法。基于初始构型设计方法，通过两个离轴三镜反射光学系统的设计实例来证明其有效性和简便性。实例1：使用简单表面快速简便地实现了一系列具有大10×3视场（FOV）的光学系统，这些光学系统展现出完美的成像质量。实例2：从良好的自动初始构型出发，设计了两个更大的20×3 FOV光学系统，焦距为500 mm，相对孔径为F/5，具有良好的成像性能，提供了有价值的设计参考。
