Yafeng Xie, Mingxu Piao, Jinli Tang, Yuanming Zhao, Wenze Lian, Jieping Fan, Bo Zhang. Optical system design of laser/infrared dual-mode annular aperture seeker[J]. Infrared and Laser Engineering, 2023, 52(2): 20220442
- Infrared and Laser Engineering
- Vol. 52, Issue 2, 20220442 (2023)
Fig. 1. Imaging principle of laser/long-wave infrared dual-mode annular aperture ultrathin system. (a) Dual-mode paraxial refraction structure; (b) Dual-mode paraxial annular aperture reflective structure
Fig. 2. Relationship between the obscuration ratio and the outer diameter of the annular aperture ultrathin imaging system
Fig. 3. Layout of laser/LWIR dual-mode annular aperture ultrathin imaging system
Fig. 4. Exploded solid model of laser/LWIR dual-mode annular aperture ultrathin imaging system. (a) Front view; (b) Rear view
Fig. 5. MTF curves of dual-mode annular aperture ultrathin system imaging in LWIR
Fig. 6. Spot diagram of dual-mode annular aperture ultrathin imaging system at laser wavelength
Fig. 7. MTF of dual-mode annular aperture ultrathin system imaging in LWIR at different ambient temperatures. (a) 20 ℃; (b) −40 ℃; (c) 80 ℃
Fig. 8. Spot diagram of dual-mode annular aperture ultrathin system imaging in laser waveband at different ambient temperatures. (a) 20 ℃; (b) −40 ℃; (c) 80 ℃
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Table 1. Design index of laser/LWIR dual-mode annular aperture ultrathin imaging system
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Table 2. MTF values of dual-mode annular aperture ultrathin system imaging in LWIR
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Table 3. Spot RMS values of dual-mode annular aperture ultrathin imaging system at laser wavelength
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Table 4. MTF values of dual-mode annular aperture ultrathin imaging system in LWIR at different ambient temperatures
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Table 5. Spot values of dual-mode annular aperture ultrathin imaging system at laser wavelength and different ambient temperatures
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Table 6. Tolerance of the dual-mode annular aperture ultrathin imaging system
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Table 7. Tolerance results of dual-mode annular aperture ultrathin system imaging in LWIR
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