[1] XU Fenggang. Research on the design of large field of view high resolution imaging optical systems [D]. Beijing: University of Chinese Academy of Sciences, 2017. (in Chinese)

[2] ZHANG Dongge. Research on key technologies of large field of view high resolution space infrared optical systems [D]. Beijing: University of Chinese Academy of Sciences, 2014. (in Chinese)

[3] ZHOU Xinru, SONG Huatang, ZHU Runhui. Compact off-axis two-mirror freeform telescopic optical system design with large relative aperture[J]. Acta Photonica Sinica, 49, 18-26(2020).

[4] MAO Xianglong, XIE Yongjun, LI Jinpeng et al. Fast design method of smooth freeform lens with an arbitrary aperture for collimated beam shaping[J]. Applied Optics, 58, 2512-2521(2019).

[5] XIE Yongjun, MAO Xianglong, LI Jinpeng et al. Optical design and fabrication of an all-aluminum unobscured two-mirror freeform imaging telescope[J]. Applied Optics, 59, 833-840(2020).

[6] THOMPSON K P, ROLLAND J P. Freeform Optical Surfaces: A revolution in imaging optical design[J]. Optics and Photonics News, 23, 30-35(2012).

[7] YANG Tong, DUAN Yingzhe, CHENG Dewen. Freeform imaging optical system design: theories, development, and applications[J]. Acta Optica Sinica, 41, 0108001(2021).

[8] FUERSCHBACH K, DAVIS G E, THOMPSON K P et al. Assembly of a freeform off-axis optical system employing three φ-polynomial zernike mirrors[J]. Optics Letters, 39, 2896-2899(2014).

[9] KAMPE T U, FRANKA I, SPUHLER P, et al. Development test of 3mirr freefm telescope f Earth remote sensing applications [C]Earth Observing Systems XXVII. SPIE, 2022, 12232: 5158.

[10] BEIER M, HARTUNG J, PESCHEL T et al. Development, fabrication, and testing of an anamorphic imaging snap-together freeform telescope[J]. Applied Optics, 54, 3530-3542(2015).

[11] ROMANOVA G E, BUTYLKINA K D, VASILYEV V N. Study of higher der aberrations of an onaxis threemirr telescope with an offaxis field of view [C]Groundbased Airbne Telescopes VIII. SPIE, 2020, 11445: 641647.

[12] HOWARD J. Optical Designs of NASA Telescopes [C]Frontiers in Optics. Optica Publishing Group, 2016, FTu1A: FTu1A.1.

[13] HOWARD J M, WEST G. Freefm Optics at NASA [C]Freefm Optics. Optica Publishing Group, 2015, FW3B: FW3B.1.

[14] 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, 17, 015605(2015).

[15] QIAN Zhuang, MO Yan, FAN Rundong. Design of cooled freeform off-axis three-mirror system with large rectangular field (invited)[J]. Infrared and Laser Engineering, 52, 20230339(2023).

[16] QIN Zichang, MENG Qingyu, WANG Xiaodong. Desensitization design method of a freeform optical system based on local curve control[J]. Optics Letter, 48, 179-82(2023).

[17] REN Chengming, CHEN Qi, MENG Qingyu. Design of off-axis three-mirror anastigmat optical systems with low error sensitivity and large field of view[J]. Acta Optica Sinica, 44, 1622002(2024).

[18] REN Chengming, MENG Qingyu. Design method f freefm offaxis threemirr anastigmat optical systems with a large field of view low err sensitivity [C]Photonics. MDPI, 2024, 11(3): 211.

[19] ZHOU Lijun, YANG Tong, GAO Lina. Design of freeform off-axis three-mirror system enabling multisurface-integrated fabrication[J]. Acta Optica Sinica, 43, 0822021(2023).

[20] FU Jingyi, LANG Changfu, YANG Haibo, et al. Design of a large field of view offaxis threemirr optical system [C]Fifth International Conference on Optoelectronic Science Materials (ICOSM 2023). SPIE, 2024, 13068: 445451.

[21] HUANG Huai, LIN Feng. Design of off-axis three-mirror system with large symmetric field of view[J]. Journal of Applied Optics, 44, 952(2023).

[22] MENG Qingyu. Overview of three-mirror reflective optical system (invited)[J]. Infrared and Laser Engineering, 51, 20210986(2022).

[23] XU Fenggang, HUANG Wei, XU Mingfei. Design of off-axis three-mirror optical system based on wassermann-wolf equations[J]. Acta Optica Sinica, 36, 238-243(2016).

[24] YANG Tong, ZHU Jun, WU Xiaofei et al. Direct design of freeform surfaces and freeform imaging systems with a point-by-point three-dimensional construction-iteration method[J]. Optics Express, 23, 10233-10246(2015).