空间遥感短波红外成像光谱仪的光学系统设计  

The Optical Design of Shortwave Infrared Imaging Spectrometer in Space

作　　者：王欣[1] 杨波[1] 丁学专[1] 刘银年[1] 王建宇[1] 

机构地区：[1]中国科学院上海技术物理研究所,上海200083

出　　处：《红外技术》2009年第12期687-690,693,共5页Infrared Technology

基　　金：国家863项目

摘　　要：设计了一种短波红外成像光谱仪的光学系统。它采用离轴透镜来校正大视场像差,避免了采用大口径同心透镜,降低了大口径透镜获取难度和加工要求,同时校正了狭缝弯曲和畸变;采用两个离轴非球面反射镜作为准直和会聚光学元件,补偿了与波长相关的狭缝弯曲,并减小了残余像差;采用一个色散棱镜来修正非线性色散,满足了光谱分辨率要求,在棱镜背面镀反射膜,简化了结构,减轻了重量。最后给出了各个通道的光谱非线性和光谱弯曲结果。This paper gives a brief introduction about the optical structure of the shortwave infrared imaging spectrometer used in space. This system adopts an off-axis len in order to adjust large field aberration. This system avoids large diameter concenter lens and the production difficulty is decreased. Two off-axis aspheric mirrors which compensate spectral curve are used to collimate and focus beam. One prism corrects nonlinear dispersion and meets the request of spectral resolution. Reflection coating is made in the rear surface. The system is simplified and has a light Weight. Finally the result of spectral nonlinear and curve data is showed.

关 键 词：短波红外成像光谱仪 离轴校正透镜 色散棱镜 光谱非线性 光谱弯曲 

分 类 号：TN216[电子电信—物理电子学]