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本文在简述了光学系统扩散函数的基本概念及其在成像过程中的作用之后,提出在工程光学范畴利用高斯函数来表示光学系统及其他一些参与成像的环节的扩散函数的方法,使得对复杂光学工程的成像特性分析大为简化。文中最后用一个轨道测量仪器的摄影系统为例,说明如何应用高斯函数表示的各个参与成像的环节的扩散函数,来分析整个光学成像系统的总体特性。
After describing the basic concept of diffusion function of optical system and its function in imaging process, this paper presents a method of using Gaussian function in optical engineering to represent the diffusion function of optical system and other imaging-related links, Optical engineering imaging characteristics greatly simplified. In the end, an orbit measuring instrument photography system is taken as an example to illustrate how to apply the diffusion function of each participation imaging part represented by Gaussian function to analyze the overall characteristics of the whole optical imaging system.