Fig. 1. Schematic diagram of framing imaging system

Fig. 2. Schematic diagram of optical path for large object distance adjustment

Fig. 3. MTF curve of objective group at infinite distance

Fig. 4. MTF curve of objective group at 500mm distance

Fig. 5. Optical path diagram of collimator group and field group

Fig. 6. MTF curves of collimator group and field mirror

Fig. 7. Schematic diagram of optical path of convergence mirror

Fig. 8. MTF curve of convergence mirror group

Fig. 9. Single channel imaging optical path

Fig. 10. Single channel MTF curve

Fig. 11. Distortion curve

Fig. 12. Structure of four-channel amplitude-framing optical system

Fig. 13. Structure of eight-channel amplitude-framing optical system （front）

Fig. 14. Structure of eight-channel amplitude-framing optical system （side）

Fig. 15. Field of view consistency test field map

Fig. 16. Filed consistency test diagram of each channel of

Fig. 17. Uniformity of illumination of each channel measured by integrating sphere

Fig. 18. Uniformity test picture of the whole system

Fig. 19. Resolution test diagram of each channel of optical component

Fig. 20. Disrortion test diagram of each channel of optical

Fig. 21. Pictures taken in the field experiment