Chinese Optics, Volume. 17, Issue 2, 382(2024)
Design of three-band co-aperture optical system based on single sensor
Figures & Tables(11)
Fig. 1. Imaging principle diagram of a three-band co-aperture optical system based on single sensor
Fig. 2. Design flow chart of a three-band co-aperture optical system
Table 1. Design specifications of the three-band optical system
View tableView in ArticleTable 1. Design specifications of the three-band optical system
参 数 数 值 焦距/mm 30 工作谱段1/nm 480~900 工作谱段2/nm 900~1700 工作谱段3/nm 480~1700 F数 (480~900 nm) 5.0 F数 (900~1700 nm) 3.0 视场2ω/(°) 16 畸变/% ≤0.8 MTF（@100 lp/mm） ≥0.20
Table 2. Tolerance distribution of optical system
View tableView in ArticleTable 2. Tolerance distribution of optical system
公差项 数值 光圈/fringe ≤2 元件厚度/mm ±0.02 表面偏心/mm ±0.01 元件倾斜/(°) ±0.01 元件偏心/mm ±0.01 表面不规则度/fringe ≤0.2 折射率 ±0.001 阿贝数/% ±0.3
Table 3. Sensitivity tolerances of optical system
View tableView in ArticleTable 3. Sensitivity tolerances of optical system
480~900 nm 900~1 700 nm 敏感公差项 MTF变化 敏感公差项 MTF变化 透镜6阿贝数 −0.043 透镜6折射率 −0.047 透镜5折射率 −0.043 透镜5折射率 −0.046 透镜6折射率 −0.035 透镜2偏心 −0.046 透镜1与2间隔 −0.031 透镜1与2间隔 −0.046 透镜9与10间隔 −0.030 透镜1偏心 −0.039 透镜1厚度 −0.027 透镜1厚度 −0.038 透镜2阿贝数 −0.026 透镜2表面偏心 −0.037
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Kun ZHANG, Jing-chen LI, Si SUN, Qing-rong CHEN, Fan YANG. Design of three-band co-aperture optical system based on single sensor[J]. Chinese Optics, 2024, 17(2): 382
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Received: Jun. 7, 2023
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Published Online: Apr. 15, 2024
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