掠入射光学系统成像质量评价

Image Quality Evaluation of Grazing Incidence Optical System

为了能够全面评价掠入射光学系统的成像质量,基于像差理论和傅里叶光学原理,使用Matlab编程语言编写了针对掠入射系统的像质评价程序,并利用此程序结合ZEMAX软件对用于太阳观测的WolterI型和双曲面-双曲面(H-H)型掠入射系统的成像质量做了详细的分析。结果表明,该像质评价程序能够计算不同口径和焦距的掠入射系统在不同视场,不同工作波长时的点扩散函数、能量集中度、线扩散函数和调制传递函数,对掠入射系统的设计和优化具有指导作用。

To completely evaluate the image quality of grazing incidence optical system, based on aberration theory and principle of Fourier optics, an image quality evaluating code for grazing incidence optical system was developed by using Matlab. Then, a detailed image quality analysis of the Wolter type I and hyperboloid-hyperboloid （H-H） grazing incidence optical system for solar observation was presented. The image quality evaluating code could calculate the point spread function, fractional encircled energy, line spread function and modulation transfer function of grazing incidence optical system with different aperture and focal length at different field and wavelength. This code has directive significance to design and optimization of the grazing incidence optical system.