EMCCD侦察探测装置光学系统设计

Optical system design for EMCCD investigation and detection device

摘要: 为了满足EMCCD侦察探测装置的实际使用要求，设计了一个三视场光学系统。系统采用EMCCD接收，像元尺寸为16 m16 m 。通过对比4种成像系统结构形式的优缺点，选定三视场光学系统的初始结构形式，运用CODEV软件对其进行优化，实现600 nm～850 nm波段范围内三视场光学系统成像。设计结果表明，三视场光学系统的传递函数MTF在35 lp/mm频率处均大于0.5，点列斑直径均小于像元尺寸，畸变均小于0.2%，成像对比度满足使用要求。

Abstract: In order to meet the practical requirement of EMCCD investigation and detection device, a three-field-of-view(FOV) optical system was designed．The electron multiplying charged coupled device (EMCCD) was used for receiving, and the size of the image pixel was 16 m16 m．By comparing the advantages and disadvantages of 4 different imaging structures, the initial structure of three-FOV optical system was chosen. Furthermore,the system was optimized by using CODEV software to guarantee the excellent image quality of the three-FOV optical system in the wavebands from 600 nm to 850 nm. The design results show that the MTF of three-FOV optical system is larger than 0.5 at 35 lp/mm, the size of the root-mean-square(RMS) spot is less than the size of the pixel, the distortion is less than 0.2%, and the image contrast satisfies the use requirement well.