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紧凑型消像散长狭缝光谱仪光学系统

Compact anastigmatic long-slit spectrometer

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摘要

为提高高光谱遥感仪器的幅宽?#22270;?#23567;其体积,重点研究适用于宽幅高光谱遥感应用的长狭缝、紧凑型Wynne-Offner光谱仪.通过追迹主光线,导出像散表达式,分析Offner装架和Wynne-Offner光装架的像散特性.指出Wynne-Offner装架的消像散圆域大于Offner装架的消像散圆环域,前者更适用于长狭缝.给出两个光谱仪实例,狭缝长度均为70 mm,分别工作于0.5~1.0 μm和1.0~2.5 μm波长范围,成像质量接近于衍射极限,光谱畸变可忽略,具备狭缝长、结构紧凑、像质优的特点,适用于宽幅高光谱遥感应用.

Abstract

In order to increase the swath width and reduce the volume of hyperspectral remote sensing instruments, the compact, long-slit Wynne-Offner spectrometers suitable for wide swath width were detailedly studied. By tracing the chief ray, expressions of the astigmatism were deduced, and the astigmatism of the Offner configuration and the Wynne-Offner configuration were analyzed. It was pointed out that the anastigmatic circle domain of the Wynne-Offner configuration is larger than that of the Offner configuration, and the former was more suitable for long slit. Two examples of spectrometers were given. Length of their slits are both 70 mm, and they worked in the wavelength range of 0.5~10 μm and 1.0~2.5 μm respectively. The imaging quality was close to the diffraction limit, and the spectral distortion was negligible. Such Wynne-Offner spectrometers have the advantages of long slit, compact structure and high imaging quality, and it is really suitable for the remote sensing applications with wide swath width.

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中图分类号:O439

DOI:10.11972/j.issn.1001-9014.2019.04.022

基金项目:国家重点研发计划(2016YFB0500501-02)

收稿日期:2018-12-15

修改稿日期:2019-05-05

网络出版日期:--

作者单位    点击查看

朱嘉诚:苏州大学 光电科学与工程学院 教育部现代光学技术重点实验室,江苏 苏州 215006苏州大学 光电科学与工程学院 江苏省先进光学制造技术重点实验室,江苏 苏州 215006
沈为民:苏州大学 光电科学与工程学院 教育部现代光学技术重点实验室,江苏 苏州 215006苏州大学 光电科学与工程学院 江苏省先进光学制造技术重点实验室,江苏 苏州 215006

联系人作者:朱嘉诚([email protected])

备注:朱嘉诚(1993-), 男, 江苏张家港人, 博士研究生, 主要从事成像光谱技术方面的研究. E-mail:[email protected]

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引用该论文

ZHU Jia-Cheng,SHEN Wei-Min. Compact anastigmatic long-slit spectrometer[J]. Journal of Infrared and Millimeter Waves, 2019, 38(4): 542-548

朱嘉诚,沈为民. 紧凑型消像散长狭缝光谱仪光学系统[J]. 红外与毫米波学报, 2019, 38(4): 542-548

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