Offner分光成像系统的球面自准直法快速装调

杨拓拓; 陈新华; 赵知诚; 朱嘉诚; 沈为民

doi:10.37188/CO.2020-0058

Volume 13 Issue 6

Dec. 2020

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Article Contents

Chinese Optics > 2020 > 13(6): 1324-1331.

YANG Tuo-tuo, CHEN Xin-hua, ZHAO Zhi-cheng, ZHU Jia-cheng, SHEN Wei-min. Fast alignment of an offner imaging spectrometer using a spherical autostigmatic method[J]. Chinese Optics, 2020, 13(6): 1324-1331. doi: 10.37188/CO.2020-0058

Citation:

YANG Tuo-tuo, CHEN Xin-hua, ZHAO Zhi-cheng, ZHU Jia-cheng, SHEN Wei-min. Fast alignment of an offner imaging spectrometer using a spherical autostigmatic method[J]. Chinese Optics, 2020, 13(6): 1324-1331. doi: 10.37188/CO.2020-0058

Citation:

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Fast alignment of an offner imaging spectrometer using a spherical autostigmatic method

doi: 10.37188/CO.2020-0058

YANG Tuo-tuo^{1, 2, 3
,},
CHEN Xin-hua^{1, 2, 3
,
,},
ZHAO Zhi-cheng^{1, 2, 3},
ZHU Jia-cheng^{1, 2, 3},
SHEN Wei-min^{1, 2, 3
,}

1.
School of Optoelectronic Science and Engineering, Soochow University, Suzhou 215006, China
2.
Key Laboratory of Modern Optical Technologies of Education Ministry of China, Suzhou 215006, China
3.
Key Laboratory of Advanced Optical Manufacturing Technologies of Jiangsu Province, Suzhou 215006, China

Funds: Supported by National Key Research and Development Program of China (No. 2016YFB0500501-2)

More Information

Corresponding author: xinhua_chen@stu.suda.edu.cn
Received Date: 08 Apr 2020
Rev Recd Date: 11 May 2020

Available Online: 29 Oct 2020

Publish Date: 01 Dec 2020

Abstract

Abstract

Offner imaging spectrometers consist of a convex grating and two concave mirrors. The concentric characteristics of the optical structure allow it to have a large relative aperture, small distortion and a compact structure. In order to reduce the difficulty of aligning an Offner imaging spectrometer and improve its efficiency, this paper presents a fast alignment method for Offner imaging spectrometers based on the concentric characteristic and spherical autostigmatic method. Firstly, a spherical autostigmatic device is built, which can generate a point source. When the point source is located at the spherical mirror’s center of curvature (CoC), its reflection image point and the point source coincide. By measuring the distance between the reflection image point and the point source, the positional deviation of the spherical mirror’s CoC can be determined. The Offner imaging spectrometer is completed by locating the CoC of its primary mirror, convex grating and tertiary mirror. The results show that the location error of the two off-axis concave mirrors’ CoC can be controlled within 10 μm, and our imaging performance requirements for the imaging spectral system are satisfied. Compared with pre-existing methods, this method is easier to operate, lower in cost and has faster alignment capabilities.
- Offner imaging spectrometer,
- concentric characteristics,
- spherical autostigmatic,
- fast alignment

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References(17)

References

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