影响Czerny-Turner结构像散校正的因素

董科研1 李欣航1,2,3 安岩1

(1.长春理工大学空间光电技术研究所, 吉林长春 130022)
(2.长春理工大学光电工程学院, 吉林长春 130022)
(3.Opto-electronics Engineer Institute,Changchun University of Science and Technology, Changchun ,China 130022)

【摘要】针对宽波段Czerny-Turner结构像散校正存在的问题,分析了影响光学系统像散校正的主要因素。基于发散光束照射平面光栅的像差理论,应用Matlab软件模拟分析了光学系统产生像散的原因和相应抑制方法的不足。讨论了了准直镜离轴角与聚焦镜离轴角的角度差值α和光学系统像散S之间关系,理论模拟了α取不同值时,宽波段C-T结构的全波段像散校正情况。为了验证理论分析的正确性,设计了光谱段为900~1 700nm的消像散型光学系统,利用光学设计软件Zemax对该波段的光学系统进行了光线追迹和设计优化,并对设计结果进行处理和分析。结果显示:随着角度差值的逐渐增大,短波波段像散校正能力越来越强,像散校正能力提高了1.6倍左右;长波波段像散束缚能力越来越弱,像散校正能力平均降低了1.27倍左右。得到的结果表明:角度差值的合理选取可以为宽波段Czerny-Turner结构的像散校正提供理论指导。

【关键词】 光学设计; Czerny-Turner结构; 像散校正; 边缘波段;

【DOI】

【基金资助】 长春市科技局科技支撑计划资助项目(No.14DR003) 校内青年科学基金资助项目(No.XQNJJ-2013-12) 吉林省教育厅“十三五”科学技术研究项目(吉教科合字[2016]第368号)

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This Article

ISSN:1004-924X

CN: 22-1198/TH

Vol 24, No. 10, Pages 2384-2391

October 2016

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Article Outline

摘要

  • 1 引言
  • 2 像散理论
  • 3 像散校正分析
  • 4 实验及结果分析
  • 5 结论
  • 参考文献