用于空间外差光谱技术的Offner成像系统设计

发布时间：2018-06-11 21:44

本文选题：成像系统 + 空间外差光谱技术　；参考：《光学学报》2016年09期

【摘要】：Offner反射式成像镜头相比于透射成像镜头具有适用波段范围宽、像差小、相对数值孔径较大、结构简单紧凑以及空间适应性良好的优点。结合空间外差技术特点和要求,给出了一种Offner成像镜头的设计方法和光路结构。该设计通过在出射光路中加入透镜改变缩放比,离轴装配消除像差的方法,可以满足空间外差光谱仪中对定域面干涉条纹进行任意比例缩放的要求。在系统要求数值孔径为0.042、缩放比为-0.8622…1的条件下,给出了设计实例,且点列图最大均方根半径优于1.81μm。最后对该系统进行了像质评价和公差分析,分析结果表明其成像质量可以满足空间外差光谱仪对成像镜头的要求,在现有加工和装配水平条件下可工程化实现。
[Abstract]:Compared with the transmission imaging lens, the Offner lens has the advantages of wide range of suitable band, small aberration, relatively large relative numerical aperture, simple and compact structure and good spatial adaptability. A design method and optical path structure of Offner imaging lens are given in combination with the characteristics and requirements of space heterodyne technology. The method of adding lens to change the scaling ratio and removing the aberration from the off-axis assembly can satisfy the requirement of the spatial heterodyne spectrometer to scale the interference fringe of the fixed area at any scale. In the system, the numerical aperture is 0.042, the scaling ratio is -0.8622... Under 1 conditions, the design example is given, and the maximum mean square root radius of the point graph is better than 1.81 m.. Finally, the image quality evaluation and tolerance analysis are carried out for the system. The analysis results show that the imaging quality can meet the requirements of the spatial heterodyne spectrometer for the imaging lens, and can be realized under the existing processing and assembly level conditions.
【作者单位】：中国科学院合肥物质科学研究院安徽光学精密机械研究所;中国科学技术大学;中国科学院通用光学定标与表征技术重点实验室;
【基金】：国家自然科学基金(41301373) 中国科学院GFCX青年基金(CXJJ-16Q136)
【分类号】：TH744.1

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