基于Dyson同心系统的光线折叠式成像光谱仪优化设计  

Optimal Design of Light Folding Imaging Spectrometer Based on Dyson Concentric System

作　　者：刘玉娟[1] 王成明[1] 林君[1] 崔继承[2] 张天瑜[1] 仲志成[1] 

机构地区：[1]吉林大学仪器科学与电气工程学院,吉林长春130026 [2]中国科学院长春光学精密机械与物理研究所,吉林长春130033

出　　处：《光谱学与光谱分析》2016年第7期2287-2290,共4页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金项目(41504135)资助

摘　　要：基于Dyson同心光学系统的凹面光栅成像光谱仪具有像差小、孔径高、结构简单紧凑的优点,同心结构要求光谱仪子系统的物面和像面必须重合为一个平面,且物点和像点之间距离非常小。现有的焦平面探测技术和装配技术难以满足理论设计要求。为了解决实际中物点和探测器的安置问题,对传统Dyson同心光谱仪光学系统进行了改进设计,通过在成像光束中引入离轴反射镜实现像面位置的转移。结果表明:改进后的光学系统由于成像光束发生折叠,物面和像面成功分离,且改进后系统的全波段像差得到更合理的分配。Concave grating spectrometer based on Dyson concentric optical system has advantages of low aberration ,large aper-ture and compact structure .The object plane and image plane of concentric spectrometer subsystem must be reunited into one plane while the distance between the object point and image point is relatively small .Thus it is difficult to satisfy this require-ment for the existing focal plane of detection technology and assembly technology .In order to solve the assembly problem of the object and detector ,the traditional Dyson concentric spectrometer was improved by introducing the off-axis mirror to shift the image light beam .The results show that the object plane and image plane of the improved system are separated successfully by the beam folding ,and the aberration at all wavelengths is more rational distribution .

关 键 词：成像光谱仪 同心 DYSON 光学设计 

分 类 号：TH744[机械工程—光学工程]