[1] Gong D, Wang H. Optical design of large field and low distortion coaxial three mirror system with free-form surfaces[J]. Acta Optica Sinica, 34, 0722001(2014).

[2] Ni D W, Li X Y, Yang M Y et al. Large field of view space-based optical detection system based on freeform surfaces[J]. Acta Optica Sinica, 38, 1122003(2018).

[3] Zhu J, Hou W, Zhang X D 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).

[4] Zhang X, Zheng L G, He X et al. Design and fabrication of imaging optical systems with freeform surfaces[J]. Proceedings of SPIE, 8486, 848607(2012).

[5] 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).

[6] Li X Y, Ni D W, Yang M Y et al. Design of large field of view space camera optical system based on freeform surfaces[J]. Acta Photonica Sinica, 47, 0922003(2018).

[7] Meng Q Y, Wang H Y, Wang Y et al. Off-axis three-mirror freeform optical system with large linear field of view[J]. Infrared and Laser Engineering, 45, 1018002(2016).

[8] Meng Q Y, Wang H Y, Liang W J et al. Design of off-axis three-mirror systems with ultrawide field of view based on an expansion process of surface freeform and field of view[J]. Applied Optics, 58, 609-615(2019).

[9] Yao Y X, Yuan Q, Chen L et al. Freeform surface design method combined with surface and field of view optimization[J]. Infrared and Laser Engineering, 47, 1018001(2018).

[10] Hou W, Zhu J, Yang T et al. Construction method through forward and reverse ray tracing for a design of ultra-wide linear field-of-view off-axis freeform imaging systems[J]. Journal of Optics, 17, 055603(2015).

[11] Tang R R, Zhang B Q, Jin G F et al. Multiple surface expansion method for design of freeform imaging systems[J]. Optics Express, 26, 2983-2994(2018).

[12] Li N, Huang Y. Design of large-field and low-distortion freeform space optical system with 3D construction method[J]. Acta Optica Sinica, 36, 0322001(2016).

[13] Wang C. Research on characterization function and application of freeform surface Changchun: Changchun Institute of Optics, Fine Mechanics and Physics,[D]. Chinese Academy of Sciences(2014).

[14] Thompson K. Description of the third-order optical aberrations of near-circular pupil optical systems without symmetry[J]. Journal of the Optical Society of America A, 22, 1389-1401(2005).

[15] Thompson K P. Aberration fields in tilted and decentered optical systems[D]. Tucson: University of Arizona(1980).

[16] Cao C, Liao S, Liao Z Y et al. Initial configuration design method for off-axis reflective optical systems using nodal aberration theory and genetic algorithm[J]. Optical Engineering, 58, 105101(2019).

[17] Cao C, Liao Z Y, Bai Y et al. Initial configuration design of off-axis reflective optical system based on vector aberration theory[J]. Acta Physica Sinica, 68, 134201(2019).

[18] Cao C, Liao S, Liao Z Y et al. Design of cooled freeform-surface off-axis reflective optical system[J]. Acta Optica Sinica, 39, 1122001(2019).

[19] Yang T, Zhu J, Wu X F et al. Direct design of freeform surfaces and freeform imaging systems with point-by-point three-dimensional construction-iteration method[J]. Optics Express, 23, 10233-10246(2015).

[20] Zhu J, Wu X F, Yang T et al. Generating optical freeform surfaces considering both coordinates and normals of discrete data points[J]. Journal of the Optical Society of America A, 31, 2401-2408(2014).

[21] Yang T, Jin G F, Zhu J. Automated design of freeform imaging systems[J]. Light: Science & Applications, 6, e17081(2017).