Infrared and Laser Engineering, Volume. 50, Issue 12, 20210700(2021)
Optical design of MWIR spectral imaging system encoding in spectral dimension
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Fig. 1. Optical path diagram of spectral imaging system which encoded in spectral dimension
Fig. 3. Image quality evalution of the telescopic system. (a) Spot diagram; (b) MTF curve
Fig. 5. Optical structure of the dual-pass Offner spectroscopic system
Fig. 8. Optical design of the microscopic system：(a) Optical structure; (b) Spot diagram; (c) MTF curve
Fig. 9. Integrated optimization of the system：(a) Optical structure; (b) Spot diagram; (c) MTF curve
Table 1. Design paremeters of optical system
View tableView in ArticleTable 1. Design paremeters of optical system
Parameter Value Wavelength range/μm 3-5 F-number 3.0 Operating range/km ≥3 Spatial resolution/mrad ≤0.1 Spectral resolution/nm 100
Table 2. Design paremeters of the dual-pass Offner spectroscopic system
View tableView in ArticleTable 2. Design paremeters of the dual-pass Offner spectroscopic system
Parameter Value Wavelength range/μm 3-5 Object plane size/mm2 9.6×7.68 Object space NA 0.164 Spectral resolution/nm 100 Dispersion distance/mm 2.4 Diffraction order of the grating −1 Grating period/μm 100 Blazed angle of grating/(°) 1.1047
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Yushi Zhao, Wenjun He, Zhiying Liu, Yuegang Fu. Optical design of MWIR spectral imaging system encoding in spectral dimension[J]. Infrared and Laser Engineering, 2021, 50(12): 20210700
Paper Information
Category: Optical design
Received: Sep. 22, 2021
Accepted: --
Published Online: Feb. 9, 2022
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