第19卷
第6期
2011年6月
文章编号
1004-924X(2011)061265-07
光学精密工程
Optics and Precision Engineering
满足消像散条件的Czerny-Turner
光谱仪光路的防于涉设计
陈芳”，徐彭梅
（北京空间机电研所，北京100086)
Vol.19No. 6
Jun.2011
摘要：理论分析了准直镜和聚焦镜采用球面面型的Czerny-Turner光谱仪系统中由消像散条件引起系统发生光路与结构件干涉的现象。为了在设计阶段就克服这种干涉间题，提出了Czerny-Turner结构的防干涉设计条件。结合消像散条件及光路结构防干涉条件，总结出了Czerny-Turner光谱仪消像散优化和结构优化的设计步骤，提出了准直镜入射角&:和聚焦镜人射角9的选定准则。对根据总结的设计步及人射角选定准则设计的光谱仪系统进行了光线追迹法验证，发
现其既能满足消象散条件又不会发生光路与结构件的干涉现象，能满足航天遥感对其宽谱段、高分辨率的要求。关键词：光栅光谱仅；Czerny-Turner光学系统；消像；干涉
中图分类号：V243.5;TH744.1
文献标识码：A
doi;10. 3788/OPE. 20111906.1265
Optical structure optimization of
broadbandastigmatism-freeCzerny-Turnerspectrometer
CHEN Fang', XU Peng-mei
(Beijing Institution of Space Mechanics and Electricity,Beijing 100086,China)
*Correspondingauthor,E-mail;happystraw126.com
Abstract: The interference between the optical paths in a broadband astignatism-free Gzerny-Turner spectrometer which uses spherical optics and a plane grating was introduced theoretically. To elimi-nate the interference, the zeroth-order and first-order astigmatism-free conditions of the Czerny-Turn er spectrometer was researched and several situations of optical path interference satisfied the astigma-tism-free conditions were analyzed. Based on the astigmatism-free conditions and avoidance conditions of optical structure interference, the selection principles of the incidence angles c and O, were de duced, and the optimization approach was summarized. Then, the optical system of Czerny-Turner spectrometer which will be loaded on a spacecraft was designed according to the method whose selec-tion principle was verified by using ray-tracing method. The results show that the obtained imaging quality has a good spectral resolution, which validates that the Czerny-Turner spectrometer can satisfy the requirements both for eliminating astigmatism and for avoiding optical structure interference . In
收稿日期：2010-12-13；修订日期：2011-01-25. 基金项目：国家重点基金资助项目