Optical system design of all-time star sensor with large field-of-view

Qiancheng Zhang; Sheng Zhong; Jinsong Lv; Xiancheng Li

doi:10.3788/IRLA20220583

Infrared and Laser Engineering, Volume. 52, Issue 3, 20220583(2023)

Optical system design of all-time star sensor with large field-of-view

Qiancheng Zhang^1,2,3, Sheng Zhong^1,2, Jinsong Lv³, and Xiancheng Li³

Author Affiliations

¹School of Artificial Intelligence and Automation, Huazhong University of Science and Technology, Wuhan 430074, China

²National Key Laboratory of Science and Technology on Multi-Spectral Information Processing, Huazhong University of Science and Technology, Wuhan 430074, China

³Huazhong Institute of Electro-Optics-Wuhan National Laboratory for Optoelectronics, Wuhan 430223, China

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Figures & Tables(13)

Fig. 1. Curve of atmospheric transmissivity (a) and atmospheric background radiation intensity (b) (6 km)

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Fig. 2. Structure diagram of optical system

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Fig. 3. MTF of optical system

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Fig. 4. Lateral color of optical system

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Fig. 5. Spot diagram of optical system

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Fig. 6. Field curvature of optical system

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Fig. 7. Composition block diagram

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Fig. 8. Daytime star imaging picture of optical system

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Table 1. Number of detectable stars in each band
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Table 1. Number of detectable stars in each band
Magnitude Visible band J band H band K band
0 6 66 171 232
1 16 177 569 783
2 59 688 1825 2711
3 188 2205 5578 8073
4 575 6328 16111 21891
5 1789 18119 45569 66220

Table 2. Average star number and detection probability for different magnitude
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Table 2. Average star number and detection probability for different magnitude
$ {M_V} $ 1 2 3 4 5
$ {N_{FOV}} $ 0.7 2.2 6.7 19.2 54.4
$ {P_3} $ 0.03 0.37 0.96 1 1

Table 3. Design parameters of optical lens
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Table 3. Design parameters of optical lens
Parameter Value
Focal distance/mm 70
F/# 1.4
Wavelength/μm 0.9-1.7
Transmittance 90%
View/(°) 18
Structure Transmission-type

Table 4. Dispersion characteristics of glass materials

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Table 4. Dispersion characteristics of glass materials

Glass	Wavelength/nm			Abbe number （V）	Relative partial Abbe number （p）
Glass	900	1300	1700	Abbe number （V）	Relative partial Abbe number （p）
N-LASF31	1.861	1.852	1.845	53.281	0.5875
N-KZFS11	1.624	1.616	1.609	41.628	0.5405
N-PK51	1.522	1.518	1.515	75.130	0.5507
N-SF66	1.887	1.872	1.862	34.888	0.6160
N-LAK8	1.700	1.692	1.685	47.129	0.5306

Table 5. Design results
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Table 5. Design results
Requirements Results
MTF (34 lp/mm) 0.4 0.5
Distortion 0.1% 0.06%
Field curvature/μm 2.4 1.4
Energy concentration (15 μm) 90% 95%

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Qiancheng Zhang, Sheng Zhong, Jinsong Lv, Xiancheng Li. Optical system design of all-time star sensor with large field-of-view[J]. Infrared and Laser Engineering, 2023, 52(3): 20220583

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