Design of a catadioptric system for infrared star sensor with wide field of view

Haoyu Yan; Hu Wang; Yaoke Xue; Zehua Ma

doi:10.1117/12.2606881

24 November 2021 Design of a catadioptric system for infrared star sensor with wide field of view

Haoyu Yan, Hu Wang, Yaoke Xue, Zehua Ma

Proceedings Volume 12069, AOPC 2021: Novel Technologies and Instruments for Astronomical Multi-Band Observations; 1206917 (2021) https://doi.org/10.1117/12.2606881
Event: Applied Optics and Photonics China 2021, 2021, Beijing, China

Abstract

To achieve precise applications under specific environmental requirements, an infrared optical system that can be applied to near-infrared wavelengths was designed. First of all,based on the selected parameters，the initial structure was selected and the form of the Maxutov telescope was selected and improved.Then，the detection performance of the design results was analyzed.Due to the large range of high and low temperature changes in the outer space environment, the system lens barrel material analysis was carried out to obtain the influence of temperature changes on the energy distribution of the optical system.Finally，a tolerance analysis and optimization of the designed system were conducted so that it could meet the needs of processing and assembly.The design and analysis results indicate that the optical system adopts a spherical catadioptric mirror surface, the total length of the system is 126.218mm, the full field of view for a 14 μm surrounding energy distribution is > 80%, the maximum magnification chromatic aberration value of monochromatic light with a center wavelength of 1.3μm is < 4μm, the maximum absolute distortion is < 4μm in 0.8 field of view.The system has a large field of view，aperture，and relative aperture. It is compact and of suitable size，easy to install，and offers high detection performance，high detection sensitivity，and a wide detection range.The optical system is useful for the accurate detection of high-precision target detection in a wide spectrum covering the near-infrared band of 0.9~1.7μm.

Citation Download Citation

Haoyu Yan, Hu Wang, Yaoke Xue, and Zehua Ma "Design of a catadioptric system for infrared star sensor with wide field of view", Proc. SPIE 12069, AOPC 2021: Novel Technologies and Instruments for Astronomical Multi-Band Observations, 1206917 (24 November 2021); https://doi.org/10.1117/12.2606881

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KEYWORDS

Tolerancing

Distortion

Mirrors

Optical design

Monochromatic aberrations

Spherical lenses

Telescopes

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