Fig. 1. Dyson prism imaging spectrometer

Fig. 2. Schematic diagram of concave-convex mirrors

Fig. 3. Prism dispersion diagram

Fig. 4. Dispersion diagram of double glued prism

Fig. 5. Design results of reflecting system. (a) Two-dimensional graph; (b) three-dimensional graph

Fig. 6. MTF curves of telescope system. (a) 2500 nm; (b) 1700 nm; (c) 900 nm; (d) 400 nm

Fig. 7. Design results of Dyson imaging spectrometer. (a) Two dimensional graph; (b) three dimensional graph

Fig. 8. MTF curves of imaging spectrometer components. (a) 2500 nm; (b) 1700 nm; (c) 900 nm; (d) 400 nm

Fig. 9. Overall structure splicing results. (a) Two dimensional graph; (b) three dimensional graph

Fig. 10. MTF curves of integral structure. (a) 2500 nm; (b) 1700 nm; (c) 900 nm; (d) 400 nm

Fig. 11. Energy concentration curves. (a) 2500 nm; (b) 1700 nm; (c) 900 nm; (d) 400 nm

Fig. 12. Linear dispersion curves. (a) Spectral position curves of image plane of two prism materials;（b） spectral position curves of image plane of single prism material