第25卷第4期 2017年4月
1004-924X(2017)04-0867-08
文章编号
光学精密工程
Optics and Precision Engineering
Vol.25No.4
Apr.2017
大孔径面视场PG成像光谱仪的光学设计
杨晋1.2，张锐1.2*，潘明忠1，崔继承1
（1.中国科学院长春光学精密机械与物理研究所，吉林长春130033；
2.中国科学院大学，北京100049)
摘要：针对成像光谱仪通过狭缝进行线视场成像时存在的孔径较小、光学透过率较低等问题，研究了一种基于棱镜-光栅型分光结构的大孔径面视场成像光谱仪。该棱镜-光栅成像光谱仪采用表面浮雕型透射光栅，极大地降低了光栅的制作难度与成本。大孔径面视场的成像光谱仪相较于线视场成像光谱仪有较高光学效率和时间效率。但是面视场成像光谱仪的色畸变与谱线弯曲较难校正。本文将前端望远系统与分光系统进行一体化设计，满足远心光路匹配和孔径匹配，较好地校正了面视场光谱成像系统中的谱线弯曲和色畸变。并且通过加人非球面反射镜及校正镜很好的校正了由于大孔径面视场所引人的非对称性离轴像差。结果表明，设计的大孔径面视场PG成像光谱仪光谱波段范围400～1000nm，
光学调制传递函数达到0.65以上，光谱分辨率达2.5nm，全谱段不同视场的谱线弯曲小于5m+色畸变小于8um 关键词：成像光谱仪；大孔径；面视场：谱线弯曲；色时变
中图分类号：TH744.1
文献标识码：A
doi:10.3788/OPE.20172504.0867
OpticaldesignofPGimagingspectrometerwith
largeapertureandsurfacefield
YANG Jin'.2,ZHANG Rui'.2+,PAN Ming-zhong',CUI Ji-cheng(1.Changchun Institute of Optics,Fine Mechanics and Physics,
ChineseAcademyof Sciences，Changchun130033,China;
2.University of ChineseAcademy of Sciences,Beijing100049,China)
*Correspondingauthor,E-mail:zhangrui_grating@163.com
Abstract: As linear field imaging by slit led to small aperture and low optical transmittance in imaging spectrometers, a large aperture imaging spectrometer based on prism-grating (PG) component was proposed. The PG imaging spectrometer employed a surface-relief type grating which can reduce the cost and fabrication difficulty of gratings. Although the large aperture imaging spectrometer had high er optical efficiency and time efficiency, the color aberrations and spectral line curvature were difficult to correct. Thereby, the telescope system was unified with the optical splitting system, which enabled the telocentric optical path mach and the aperture match with the perfect correction of spectral line curvature and color aberrations. In addition, an aspheric mirror and correction mirror were mounted to compensate the asymmetry aberration. The results demonstrate that the spectral range of the PG
收稿日期：2016-08-30；修订日期：2016-09-15.
基金项目：国家重大科学仪器设备开发专项（No.2014YQ120351）；国家重大科研装备研制项目（No.ZDYZ2008-1）：
国家自然科学基金资助项目（No.61505204）；吉林省科技发展计划项目（No.20140203011GX）