Chinese Optics, Volume. 15, Issue 1, 72(2022)
Design of cooled long-wavelength infrared imaging optical system
Fig. 2. Schematic diagram of long-wavelength infrared optical system
Fig. 3. The MTF curve diagram of the long-wavelength optical system
Fig. 5. The sphere, curve and distortion diagram of long-wavelength optical system
Fig. 6. The MTF curve diagrams of the system after focusing in high- and low-temperature environments
Fig. 7. The cold reflection ray trace of cold images with high intensity
Table 1. Design parameters of proposed infrared optical system
View tableView in ArticleTable 1. Design parameters of proposed infrared optical system
项目 参数 波段范围/μm 7.7~9.3 中心波段/μm 8.5 焦距/mm 400 F数 2 视场角(°) 1.37×1.10 靶面大小/mm 12.29 温度范围/℃ −35~+55 像元大小 15 μm×15 μm
Table 2. Analysis results of the narcissus effect
View tableView in ArticleTable 2. Analysis results of the narcissus effect
反射面 光瞳切趾 YNI I/IBAR 冷像立体角 冷像强度比 1 7(R) 32.3971 −21.550 0.012372 0.00072 2 7(R) −14.1678 −4.933 0.028289 0.00377 3 7(R) 8.9698 7.885 0.044679 0.00942 4 7(R) 2.3184 1.592 0.172476 0.13999 5 7(R) −9.9085 −6.533 0.040447 0.00772 6 7(R) −1.0371 −0.676 0.381728 0.67911 8 20(R) 1.5979 −10.228 0.423244 0.83253 9 20(R) −1.6151 −0.509 0.166312 0.13018 10 20(R) −3.5843 −0.801 0.108109 0.05508 11 20(R) −2.6479 −0.762 0.147997 0.10314 12 20(R) 1.1223 1.353 0.505261 1.17892 13 20(R) −2.7761 −0.861 0.163054 0.12515
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Qiu-sha SHAN, Mei-lin XIE, Zhao-hui LIU, Rong-li CHEN, Jing DUAN, Kai LIU, Kai JIANG, Liang ZHOU, Pei-pei YAN. Design of cooled long-wavelength infrared imaging optical system[J]. Chinese Optics, 2022, 15(1): 72
Category: Original Article
Received: May. 29, 2021
Accepted: --
Published Online: Jul. 27, 2022
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