消像散型Czerny-Turner成像光谱仪图像变形校正研究  

Study of Anamorphose Correction of Astigmatism-Corrected CzernyTurner Imaging Spectrometer

作　　者：唐义[1] 郑成[1] 南一冰[1] 李飞[1] 郭蕾[1] 

机构地区：[1]北京理工大学光电学院光电成像技术与系统教育部重点实验室,北京100081

出　　处：《光学学报》2015年第1期204-211,共8页Acta Optica Sinica

基　　金：国家973计划(2013CB329202);工业技术基础项目(J312012B002)

摘　　要：Czerny-Turner结构成像光谱仪像散校正会改变系统焦距,导致图像子午方向和弧矢方向放大率存在差异。分析了两种Czerny-Turner结构成像光谱仪像散校正光路(柱面镜和超环面)像散校正原理,由此提出并推导出两类光谱图像变形校正公式和方法,并总结二者的共同特征。通过理论计算、光线追迹仿真和实际光谱成像测量验证了图像变形校正方法的正确性。同时,该图像校正方法对其他准直光工作条件下离轴结构色散型成像光谱仪图像变形校正研究有借鉴意义。Correcting astigmatism by using Czerny-Turner imaging spectrometer can change system focal length, which leads to the difference of magnification in tangential direction and sagittal direction of the image. The common characteristics of astigmatism correction theories of Czerny-Turner imaging spectrometers （using cylindrical mirror and toroidal mirror） are analyzed. And the correction formulas, methods of anamorphose and their common characteristics are given. The validity of correction formula of anamorphose are verified with theoretical calculation, ray tracing simulation, and actual measurement. Meanwhile, this method of image correction is useful to the anamorphose correction research of off-axis structure dispersion imaging spectrometer in other operating conditions of collimation light.

关 键 词：测量 成像光谱仪 像散 放大率 图像校正 

分 类 号：O433.1[机械工程—光学工程] TH744.1[理学—光学]