Jian Ma, Junqiang Zhang, Congjun Wu, Xinquan Li, Tianjiao Lu, Bin Yang. Optical System Design of Full-Spectrum Hyperspectral Imaging Spectrometer[J]. Acta Optica Sinica, 2022, 42(23): 2322001
- Acta Optica Sinica
- Vol. 42, Issue 23, 2322001 (2022)
Fig. 1. Design scheme of optical system
Fig. 2. Coaxial three-mirror system
Fig. 3. Optical path diagram of front telescopic system. (a) Overall optical path; (b) optical path at image plane
Fig. 4. MTF curves of each spectral segment. (a) VNIR spectrum ;(b) SWIR spectrum ;(c) MWIR spectrum;(d) LWIR spectrum
Fig. 5. Optical path diagram of Offner spectral imaging system with convex grating. (a) Incident optical path ; (b) outgoing optical path
Fig. 6. Optical path diagram of Offner spectrometer in each spectral band. (a) VNIR; (b) SWIR; (c) MWIR; (d) LWIR
Fig. 7. Optical structure diagram of whole system
Fig. 8. MTF curve of center wavelength of each spectral band in whole system. (a) 0.7 μm; (b) 1.7 μm; (c) 4.0 μm; (d) 10.2 μm
Fig. 9. Cross-sectional view of point spread function of each spectral band. (a) VNIR; (b) SWIR; (c) MWIR; (d) LWIR
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Table 1. Technical specifications of optical system
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Table 2. Design parameters of multiple configurations
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Table 3. Initial structural parameters of Offner spectrometer in each spectral band
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Table 4. MTF of different wavelengths at Nyquist frequency for each spectral band spectrometer
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