Youdao Gao, Fudong Li, Zhengxiang Shen, Lin Ding, Bin Hu, Shaowei Xu. Simulation method and its test verification of cryogenic infrared lens design[J]. Infrared and Laser Engineering, 2021, 50(5): 20200397
- Infrared and Laser Engineering
- Vol. 50, Issue 5, 20200397 (2021)
Fig. 1. Design scheme of cryogenic lens shows
Fig. 2. Nephogram of displacement distribution of lens nodes
Fig. 3. Surface shape diagram of lens 2 （removing rigid body displacement）
Fig. 4. MTF curve of optical system
Fig. 5. Schematic diagram of test product composition
Fig. 6. Schematic diagram of tank preparation
Fig. 7. MTF test diagram
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Table 1. Rigid body displacement of lens
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Table 2. Zernike coefficients of lens 2 fitted at 210 K
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Table 3. Defocus of optical system
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Table 4. Theoretical design, fitting simulation and test results
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