Journal of Infrared and Millimeter Waves, Volume. 42, Issue 2, 260(2023)
Modeling and analysis for imaging characteristics of infrared array-aperture diffractive optical system
Figures & Tables(11)
Fig. 2. Shadow effects in continuous phase structure,(a) normal incidence, (b) oblique incidence
Fig. 4. Schematic of FDTD analysis, (a) 3D schematic, (b) side view of schematic
Fig. 6. Infrared array-aperture structure and Airy spot profile with different filling factors, (a) infrared array-aperture structure, (b) focal plane energy distribution of different filling factors, (c) diffraction efficiency curve
Fig. 8. Focal plane energy distribution, (a) different incident wavelengths, (b) different FOVs
Fig. 9. The degradation of MTF, (a) different incident wavelengths, (b) different Angle of incidence
Table 1. Simulation parameters of the infrared array-aperture diffractive primary lens
View tableView in ArticleTable 1. Simulation parameters of the infrared array-aperture diffractive primary lens
Wavelength Refractive index n Focal length f F number Number of steps Stitching structure Fill factor Base thick 900~980 nm 1.5 10 mm 1.43 4 Golay3 0.4~0.6 0.45 µm
Table 2. Simulation parameters of the infrared array-aperture diffraction primary lens
View tableView in ArticleTable 2. Simulation parameters of the infrared array-aperture diffraction primary lens
Wavelength/nm MTF/（%） SNR/dB FOV/（°） MTF/（%） SNR/dB 900 45.42 4.92 0 45.42 4.92 950 50.45 6.02 3 48.70 5.14 980 60.64 8.18 5 53.17 5.76
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Rui-Ze NIU, Kai QIAO, Xi-Yang ZHI, Jin-Nan GONG, Shi-Kai JIANG, Chao TIAN. Modeling and analysis for imaging characteristics of infrared array-aperture diffractive optical system[J]. Journal of Infrared and Millimeter Waves, 2023, 42(2): 260
Paper Information
Category: Research Articles
Received: Oct. 24, 2022
Accepted: --
Published Online: Jul. 19, 2023
The Author Email: Xi-Yang ZHI (zhixiyang@hit.edu.cn)
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