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本文设计了一种以双Amici棱镜为分光元件的成像光谱系统,该系统主要包括前置望远物镜、编码板、双Amici棱镜、准直镜和成像镜. 此类光学系统可以获得很高的衍射效率,相比于狭缝结构的成像光谱系统,该光谱仪为两维空间扩展的视场,无疑增加了设计难度. 后期的数据反演算法对一次像面编码板的成像效果过于依赖,基于此,对光学系统的像差校正提出了更高的要求. 本文设计、分析了基于双Amici棱镜的成像光谱仪的原理及特点,设计了一套完整的成像光谱系统. 前置望远物镜的设计为像方远心,MTF 在39线对处,达到0.8,成像质量良好. 创新性的将前置望远物镜倒置用做准直系统. 全系统各个波长在39线对处的MTF值均在0.65以上. 对室外目标景物进行推扫成像,从获得的成像数据判断,本文设计的编码孔径成像光谱仪原理可行,衍射效率高,全视场成像质量良好,全谱段光谱数据可信.The coded aperture imaging spectrometer system based on the double-Amici-prism is designed in this paper, which includes the telescope objective, the coded template, the double-Amici-prism, the collimator lens and the imaging lens. This optical system can obtain a high diffraction efficiency. Compared to the imaging spectrometer system with a slit for this kind of system, the field of view is a two-dimensional spatial expansion, increasing the difficulty of design. For the subsequent data inversion algorithm, perfect imaging is needed, and based on this, the optical aberration of the system should be corrected carefully wildly. In this paper, we design and analyse the features of the imaging spectrometer system based on the double-Amici-prism, then the comple imaging spectrometer system. Telescope objective is designed to be telecentric, its MTF at 39 line pairs is 0.8, implying that good images can be obtained. Innovatively, an inverted telescope objective is used as a collimation system.The imaging spectrometer system's MTF at 39 line pairs is higher than 0.65. The imaging of the outdoor target scene, obtained by the coded aperture imaging spectrometer, proves that the design principle is feasible,the system is of high diffraction efficiency, the full-field imaging is of good quality, and the full spectrum of data is creditabe.
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Keywords:
- imaging spectrometer /
- optical system design /
- the double-Amici-prism
[1] Wang J Y, Shu R, Liu Y N, Ma Y H 2011 Introduction to the ImagingSpectrum Technology (1st Ed.) (Beijing: Science Press) p259-262[王建宇, 舒嵘, 刘银年, 马艳华2011成像光谱技术导论(第一版) (北京: 科学出版社)第259–262页]
[2] Yuan Y 2005 Ph. D. Dissertation (Beijing: Beijing University ofAeronautics and Astronautics) (in Chinese) [袁艳2005博士学位论文(北京: 北京航空航天大学)]
[3] WagadarikarA, John R, Willett R, Brady D 2008 Appl. Opt. 47 44
[4] Hagen N, Tkaczyk T S 2011 Appl. Opt. 50 4998
[5] Pei L L, Huang M, L Q B 2013 Acta Optica Sinica 33 122003 (in Chinese) [裴琳琳, 黄旻, 吕群波 2013 光学学报 33 122003]
[6] Sun Q, Yu B, Wang Z Q, Mu G G, Lu Z W 2004 Acta Phys. Sin. 53 756 (in Chinese) [孙强, 于斌, 王肇圻, 母国光, 卢振武 2004 53 756]
[7] Song Y F, Shao X P, Xu J 2008 Acta Phys. Sin. 57 6298 (in Chinese) [宋岩峰, 邵晓鹏, 徐军 2008 57 6298]
[8] Sun J X, Pan G Q, Liu Y 2013 Acta Phys. Sin. 62 094203
[9] Li D X, Lu Z W, Sun Q 2007 Acta Phys. Sin. 56 5766 (in Chinese) [李东熙, 卢振武, 孙强 2007 56 5766]
[10] Dong K Y, Sun Q, Li Y D 2006 Acta Phys. Sin. 55 4602 (in Chinese) [董科研, 孙强, 李永大 2006 55 4602]
[11] Liu Y J 2012 Ph. D. Dissertation (Changchun: The Changchun Institute ofOptics, Fine Mechanics and Physics, Chinese Academy of Science) (inChinese) [刘玉娟2012博士学位论文(长春: 中国科学院长春光学精密机械与物理研究所)]
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[1] Wang J Y, Shu R, Liu Y N, Ma Y H 2011 Introduction to the ImagingSpectrum Technology (1st Ed.) (Beijing: Science Press) p259-262[王建宇, 舒嵘, 刘银年, 马艳华2011成像光谱技术导论(第一版) (北京: 科学出版社)第259–262页]
[2] Yuan Y 2005 Ph. D. Dissertation (Beijing: Beijing University ofAeronautics and Astronautics) (in Chinese) [袁艳2005博士学位论文(北京: 北京航空航天大学)]
[3] WagadarikarA, John R, Willett R, Brady D 2008 Appl. Opt. 47 44
[4] Hagen N, Tkaczyk T S 2011 Appl. Opt. 50 4998
[5] Pei L L, Huang M, L Q B 2013 Acta Optica Sinica 33 122003 (in Chinese) [裴琳琳, 黄旻, 吕群波 2013 光学学报 33 122003]
[6] Sun Q, Yu B, Wang Z Q, Mu G G, Lu Z W 2004 Acta Phys. Sin. 53 756 (in Chinese) [孙强, 于斌, 王肇圻, 母国光, 卢振武 2004 53 756]
[7] Song Y F, Shao X P, Xu J 2008 Acta Phys. Sin. 57 6298 (in Chinese) [宋岩峰, 邵晓鹏, 徐军 2008 57 6298]
[8] Sun J X, Pan G Q, Liu Y 2013 Acta Phys. Sin. 62 094203
[9] Li D X, Lu Z W, Sun Q 2007 Acta Phys. Sin. 56 5766 (in Chinese) [李东熙, 卢振武, 孙强 2007 56 5766]
[10] Dong K Y, Sun Q, Li Y D 2006 Acta Phys. Sin. 55 4602 (in Chinese) [董科研, 孙强, 李永大 2006 55 4602]
[11] Liu Y J 2012 Ph. D. Dissertation (Changchun: The Changchun Institute ofOptics, Fine Mechanics and Physics, Chinese Academy of Science) (inChinese) [刘玉娟2012博士学位论文(长春: 中国科学院长春光学精密机械与物理研究所)]
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