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
- Journal of Infrared and Millimeter Waves
- Vol. 42, Issue 2, 260 (2023)
Fig. 1. Mechanism of degradation
Fig. 2. Shadow effects in continuous phase structure,(a) normal incidence, (b) oblique incidence
Fig. 3. Shadow effects in multi-level structure
Fig. 4. Schematic of FDTD analysis, (a) 3D schematic, (b) side view of schematic
Fig. 5. Flow to solve diffraction efficiency
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. 7. MTF in the central FOV with different filling factors
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
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Table 1. Simulation parameters of the infrared array-aperture diffractive primary lens
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Table 2. Simulation parameters of the infrared array-aperture diffraction primary lens
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