[6] [6] XU Chen, CHENG dewen, CHEN Jinjin, et al. Design of all-reflective dual-channel foveated imaging system based on free form optics[J]. Applied Optics, 2016, 55(9): 2353-2362.

[9] [9] Figoski J W. Quick Bird telescope: the reality of large high-quality commercial space optics[C]//SPIE, 1999, 3779: 22-24.

[10] [10] Calamai L, Barsotti S, Fossati E, et al. Ring-field TMA for prisma: theory, optical design, and performance measurement[C]//SPIE, 2015, 9626: 5-10.

[11] [11] ZHU Jun, HOU Wei, ZHANG Xiaodong, et al. Design of a low F-number freeform off-axis three-mirror system with rectangular field of-view[J]. Journal of Optics, 2015, 17(1): 015605.