Total reflection optical design of AOTF imaging spectrometer

Lingying Chang; Wang Xinyou; Qiu Yuehong; Wang Guanru; Lv Yifan; Liang Chi; Chen Kui

doi:10.1117/12.2666109

4 April 2023 Total reflection optical design of AOTF imaging spectrometer

Lingying Chang, Wang Xinyou, Qiu Yuehong, Wang Guanru, Lv Yifan, Liang Chi, Chen Kui

Proceedings Volume 12617, Ninth Symposium on Novel Photoelectronic Detection Technology and Applications; 126173O (2023) https://doi.org/10.1117/12.2666109
Event: 9th Symposium on Novel Photoelectronic Detection Technology and Applications (NDTA 2022), 2022, Hefei, China

Abstract

A total reflection optical system of AOTF (acousto-optic tunable filters) imaging spectrometer was designed, which adopts the confocal scheme, consisting of the front lens, AOTF and projection lens. AOTF is the field stop of the optical system. Both subsystems are quasi-telecentric systems that can effectively eliminate the parallax when the subsystems are connected and facilitate the installation of the system. The initial structural parameters are determined by the third-order aberration theory of the coaxial three-mirror optical system. This off-axis total reflection optical system is unobstructed by adding the field of view off-axis, tilt, and decentration, with a spectral range of 0.4-1.7μm, a focal length of 150mm, and a full field of view of 4.68°. The simulation result is shown that the modulation transfer function (MTF) is greater than 0.54 in the 0.4-1.7μm band, which is close to the diffraction limit, and the systematic distortion value is less than 0.1%.

Citation Download Citation

Lingying Chang, Wang Xinyou, Qiu Yuehong, Wang Guanru, Lv Yifan, Liang Chi, and Chen Kui "Total reflection optical design of AOTF imaging spectrometer", Proc. SPIE 12617, Ninth Symposium on Novel Photoelectronic Detection Technology and Applications, 126173O (4 April 2023); https://doi.org/10.1117/12.2666109

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KEYWORDS

Spectroscopy

Imaging systems

Mirrors

Optical design

Infrared spectroscopy

Charge-coupled devices

Distortion

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