Correction of astigmatism and coma using analytic theory of aberrations in imaging spectrometer based on concentric off-axis dual reflector system

Ting Ai Chen, Yi Tang*, Li Jun Zhang, Yue E. Chang, Cheng Zheng

*此作品的通讯作者

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11 引用 (Scopus)

摘要

A specific imaging spectrometer based on a concentric off-axis dual reflector system is proposed, free of astigmatism and coma. The described imaging spectrometer consists of four spherical mirrors and a plane grating. The analytic theory of aberrations and the optical path-length concept are used to derive the astigmatism elimination and coma removal. It is shown that the astigmatism in these imaging spectrometers is eliminated by characterizing three angles, and the coma is corrected when unequal mirror radii are configured in collimating and condensing optics. The developed aberration principle is verified by comparing the performance of the astigmatism-eliminated spectrometer with the spectrometer which has neither astigmatism nor coma.

源语言英语
页(从-至)565-576
页数12
期刊Applied Optics
4
DOI
出版状态已出版 - 1 2月 2014

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