Zhengping Zhou, Heng Chen, Hui Ji, Xiaqing Li, Jun Liao. Design of Lightweight Long-Wave Infrared Athermalized Optical System with Hybrid Refractive-Diffractive[J]. Laser & Optoelectronics Progress, 2022, 59(10): 1022001
- Laser & Optoelectronics Progress
- Vol. 59, Issue 10, 1022001 (2022)
Fig. 1. Thermal defocus model of triple separated thin lens
Fig. 2. Optical system. (a) Optical layout of system; (b) system model
Fig. 3. MTF curves at 22 ℃
Fig. 4. MTF curves at -40 ℃
Fig. 5. MTF curves at 60 ℃
Fig. 6. Relationship between MYF and temperature at 42 lp/mm
Fig. 7. Surface type of binary diffraction surface
Fig. 8. Images at different environment temperature
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Table 1. Performance parameters of common long-wave infrared materials
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Table 2. Specifications of optical system
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Table 3. Partial results of optical system initial structure
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Table 4. Design parameters of diffraction surface
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