Infrared and Laser Engineering, Volume. 50, Issue 5, 20200397(2021)
Simulation method and its test verification of cryogenic infrared lens design
Figures & Tables(11)
Fig. 3. Surface shape diagram of lens 2 （removing rigid body displacement）
Table 1. Rigid body displacement of lens
View tableView in ArticleTable 1. Rigid body displacement of lens
Mirror number Tx Ty Tz Rx Ry Rz 11 −2.7949E-04 9.9660E-03 −6.0877E-02 7.1514E-06 −1.5074E-06 −5.8983E-07 12 −8.1982E-04 9.3528E-03 −5.6416E-02 7.0429E-06 −1.5240E-06 −5.8931E-07 21 −3.9439E-04 1.2825E-02 −3.4461E-02 1.4481E-05 −2.0520E-06 −7.9392E-07 22 1.6542E-05 1.3727E-02 −2.8960E-02 1.3445E-05 −3.9253E-06 −7.9809E-07 31 3.8012E-04 1.1789E-02 −6.2370E-03 −2.1042E-07 −1.6917E-06 −7.8651E-07 32 −4.8088E-05 1.1473E-02 −1.9305E-03 −7.3894E-07 −2.7398E-06 −7.9127E-07 41 −7.1167E-05 1.1914E-02 5.8549E-02 1.1449E-05 −1.3130E-06 −3.1968E-07 42 −9.3400E-04 1.2348E-02 6.3718E-02 1.1444E-05 −2.6384E-06 −3.2117E-07 51 3.9997E-05 1.1358E-02 6.3480E-02 1.6506E-05 −9.3102E-07 −4.2036E-07 52 −1.0513E-03 1.1771E-02 7.0715E-02 1.5050E-05 −4.2598E-06 −4.1898E-07 61 −1.1529E-03 1.2242E-02 1.1839E-01 8.7089E-06 −4.1861E-06 −1.6503E-07 62 −9.5614E-04 1.2250E-02 1.2138E-01 8.9706E-06 −3.0556E-06 −1.6429E-07
Table 2. Zernike coefficients of lens 2 fitted at 210 K
View tableView in ArticleTable 2. Zernike coefficients of lens 2 fitted at 210 K
Zernike number Lens 1 first side Lens 1 second side 1 −0.00039554 −0.00019119 2 −0.00165545 0.00129153 3 0.0006715 −0.0053511 4 0.0005297 0.0011647 5 0.0489164 0.055137 … … … 37 0.00015646 −0.00004436
Table 3. Defocus of optical system
View tableView in ArticleTable 3. Defocus of optical system
Category Defocusing amount/μm Theoretical design 73.56 210 K fitting 70.189
Table 4. Theoretical design, fitting simulation and test results
View tableView in ArticleTable 4. Theoretical design, fitting simulation and test results
Working condition MTF Defocusing amount/μm Theoretical design （210 K） 0.6586 （Cryogenic lens） 73.56 Simulation fitting （210 K） 0.6324 （Cryogenic lens） 70.189 Room temperature test （293 K） 0.2861 （System） − Low temperature test （210 K） 0.2854 （System） 71.2
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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
Paper Information
Category: Infrared technology and application
Received: Oct. 11, 2020
Accepted: --
Published Online: Aug. 13, 2021
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