Design of a Panoramic Band Infrared Optical System Based on Q-Type Aspherical Surface

Table 1. Optical system design index
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Table 1. Optical system design index
项目指标要求
焦距/mm 7.5
视场角（50°~70°）×360°
F数 1.5
光学系统入瞳直径/mm 5
谱段/μm 7.5~10.5

Table 2. Optical material
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Table 2. Optical material
全景环带光学系统镜片光学材料
头部单元反射镜1 碳化硅
反射镜2
中继透镜组透镜1 锗
透镜2 硫系玻璃
透镜3 锗
透镜4 锗
透镜5 锗

Table 3. Q-Type asphere and corresponding even-order asphere parameters

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Table 3. Q-Type asphere and corresponding even-order asphere parameters

Q型非球面
表面	最大通光半径/mm	曲率半径/mm	一阶项	二阶项	三阶项	四阶项	五阶项
次镜	20.347	0.01	−0.013	−0.025	−5.732×10⁻³	−2.040×10⁻³	−1.214×10⁻³

偶次非球面
表面	曲率	圆锥系数	四阶项	六阶项	八阶项	十阶项	十二阶项
次镜	39.202	0.004 2	1.443×10⁻⁶	−1.005×10⁻⁸	2.933×10⁻¹¹	−4.530×10⁻¹⁴	2.875×10⁻¹⁷

Table 4. System point diagram
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Table 4. System point diagram
视场 50° 60° 70°
均方根弥散斑半径/μm 6.665 7.949 9.241
几何半径/μm 12.859 8.348 21.711

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Yifan LIU, Feng ZHOU, Bin HU, Libing JIN. Design of a Panoramic Band Infrared Optical System Based on Q-Type Aspherical Surface[J]. Spacecraft Recovery & Remote Sensing, 2024, 45(1): 90

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