Yuan PENG, Hongda WEI, Yang LIU, Jianwen ZHANG, Weijie DENG, Qiang FU. Design of refractive-diffractive hybrid medium wave infrared thermal suppression optical system in a wide temperature range[J]. Infrared and Laser Engineering, 2024, 53(10): 20240240
- Infrared and Laser Engineering
- Vol. 53, Issue 10, 20240240 (2024)
Fig. 1. Linear relationship among H , L k and L e
Fig. 2. T-C diagram in the mid-wave infrared wavelength band
Fig. 3. Diagram of ideal optical system
Fig. 4. Diagram of mid-wavelength infrared optical system structure
Fig. 5. Spot diagram of optical system in different fields of view
Fig. 6. MTF of optical system
Fig. 7. Energy concentration degree of optical system
Fig. 8. Relative distortion
Fig. 9. (a) MTF curve of optical system designed at 20 ℃; (b) MTF curve of optical system designed at 90 ℃; (c) MTF curve of optical system designed at 150 ℃; (d) MTF curve of optical system designed at 220 ℃
Fig. 10. Defocusing MTF curve of optical system at 90 ℃
Fig. 11. Relationship among diffraction efficiency, temperature, and wavelength
Fig. 12. Characteristic parameter curve of diffraction surface
|
Table 1. The corresponding optical and thermal properties of medium wave infrared optical materials
|
Table 2. System technology index
|
Table 3. Optical element parameters of an ideal optical system
|
Table 4. The eight material combinations with the smallest distances in the objective lens group
|
Table 5. The eight material combinations with the smallest distances in the relay lens group
|
Table 6. 20-220 ℃ focus shift of system
|
Table 7. The angle of incidence and the corresponding diffraction efficiency
|
Table 8. Preset tolerance value
Set citation alerts for the article
Please enter your email address
© Copyright 2018-2021 | Chinese Laser Press. All Rights Reserved 沪ICP备15018463号-20