Chinese Optics, Volume. 16, Issue 4, 853(2023)
Passive athermalization design of a cooled infrared optical system
Figures & Tables(12)
Table 1. Optical design parameters
View tableView in ArticleTable 1. Optical design parameters
工作谱段 3.7 μm~4.8 μm 视场 14.36°×10.87° 焦距 62.5 mm F# 2.5 探测器 640×512（25 μm）
Table 2. Analysis of athermal aberration capability of the optical system
View tableView in ArticleTable 2. Analysis of athermal aberration capability of the optical system
温度 （ °C） MTF 离焦量 （mm） −55 0.684 −0.0096 −40 0.685 −0.0099 −20 0.686 −0.0083 0 0.684 −0.0055 20 0.681 −0.0013 40 0.676 0.0025 70 0.666 0.0098
Table 3. YNI and I/Ibar values for each surface
View tableView in ArticleTable 3. YNI and I/Ibar values for each surface
表面 YNI I/Ibar S2 1.0565 0.7164 S3 1.0593 0.7218 S4 1.1498 0.7164 S5 1.1780 0.7218 S6 1.2912 0.7164 S7 1.3193 0.7218 S8 −1.3374 1.6435 S9 −5.5355 4.2410 S10 −5.7369 3.9166 S11 2.3025 0.9078 S12 3.0894 0.9951 S13 −6.4227 2.8058 S14 1.0906 0.4333 S15 −2.6650 8.6885 S16 −0.1074 0.2176 S17 1.9703 21.3971 S18 2.2516 8.7762 S19 −3.4659 0.9250
Table 4. MTF test value (test wavelength
λ =3.39 μm)View tableView in ArticleTable 4. MTF test value (test wavelength
λ =3.39 μm)视场（°） MTF 子午 弧矢 平均 （0，0） 0.68 0.68 0.68 （0，7.18） 0.5 0.48 0.49 （0，−7.18） 0.47 0.45 0.46 （5.435，0） 0.60 0.61 0.6 （−5.435，0） 0.58 0.61 0.59
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Kang LI, Feng ZHOU, Bao-hua WANG, Hui GONG, Guo-xian ZHENG. Passive athermalization design of a cooled infrared optical system[J]. Chinese Optics, 2023, 16(4): 853
Paper Information
Category: Original Article
Received: Sep. 28, 2022
Accepted: --
Published Online: Jul. 27, 2023
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