Journal of Applied Optics, Volume. 42, Issue 5, 767(2021)
Design of catadioptric middle infrared diffractive telescope system with large aperture
Figures & Tables(13)
Fig. 2. Initiating structure of catadioptric mid-wave infrared diffractive telescope system
Fig. 3. Structure of catadioptric mid-wave infrared diffractive telescope system
Fig. 6. Phase and line frequency radial distribution curves of diffractive lens and diffractive correction lens
Table 1. Parameters of optical system
View tableView in ArticleTable 1. Parameters of optical system
参数 指标 口径/mm 1 000 波段 /μm 3.8～4.2 焦距/mm 2 000 F数 2 全视场/（°） 0.12 MTF（@16.7 lp/mm） $ >0.6 $ 工作温度/℃ −20～60
Table 2. Tolerance allocation of system elements
View tableView in ArticleTable 2. Tolerance allocation of system elements
项目 衍射元件 其他元件 厚度和空气间隔/mm ±0.025 ±0.015 半径/mm — ±0.015 表面和元件偏心/mm ±0.015 ±0.015 表面和元件倾斜/（″） 20 10 面型误差/局部光圈 1/30λ 0.2
Table 3. Sensitive tolerance terms
View tableView in ArticleTable 3. Sensitive tolerance terms
项目 值 MTF下降量 TETX（Y）-中继反射镜1/（″） 10″ 0.050 2 TEDY-三次成像镜1/mm ±0.01 0.023 8 TEDX-三次成像镜1/mm ±0.01 0.023 8 TSDY-三次成像镜1前表面/mm ±0.01 0.020 0 TSDX-三次成像镜1前表面/mm ±0.01 0.020 0
Table 4. Ghost image path information
View tableView in ArticleTable 4. Ghost image path information
具体路径 光线 数量 光通量 占比/% 成像光线 22 549 99.90 三次成像镜3后表面与三次成像镜2前表面反射 5 460 0.01 再聚焦镜2后表面与校正镜前表面反射 14 468 0.01 再聚焦镜1前表面与校正镜前表面反射 14 468 0.01 三次成像镜3后表面与三次成像镜1后表面反射 6 460 0.01 中继透镜2前表面与中继透镜1后表面反射 5 344 0.01 再聚焦镜3后表面与再聚焦镜2前表面反射 3 871 0.01 主镜−3级与校正镜-3级衍射 237 0.01 主镜+5级与校正镜+5级衍射 259 0.01
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Yan ZHOU, Shibin WU, Lihua WANG, Jie LI, Junfeng DU, Jiang BIAN. Design of catadioptric middle infrared diffractive telescope system with large aperture[J]. Journal of Applied Optics, 2021, 42(5): 767
Paper Information
Category: OE SYSTEM AND ENGINEERING
Received: Jan. 7, 2021
Accepted: --
Published Online: Sep. 23, 2021
The Author Email: WU Shibin (sbwu@ioe.ac.cn)
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