[1] Dickey F M, Holswade S C, Shealy D L. Laser Beam Shaping Applications[M]. Boca Raton: CRC Press, Tayl & Francis Group, 2006.

[2] W Zhang, C Y Liang, J Li, et al. Design of optical elements for beam shaping and uniform illumination in laser digital projection display system. Acta Optica Sinica, 35, 0805001(2015).

[3] D Zeng, D S Peng, Y Jiang. Optical devices design and simulation of LED illumination. Infrared and Laser Engineering, 45, 1220001(2016).

[4] C Liang, W Zhang, Z Wu, et al. Beam shaping and speckle reduction in laser projection display systems using a vibrating diffractive optical element. Current Optics and Photonics, 1, 23-28(2017).

[5] G Y Shi, X P Yang, Y M Liang. Gaussian beam shaping based on aspheric cylindrical lens. Acta Photonica Sinica, 43, 0122001(2014).

[6] E Chen, R Wu, T Guo. Design a freeform microlens array module for any arbitrary-shape collimated beam shaping and color mixing. Optics Communications, 321, 78-85(2014).

[7] J N Li, Y Tang, Z Kuang, et al. Multi imaging-based beam shaping for ultrafast laser-material processing using spatial light modulators. Optics and Lasers in Engineering, 112, 59-67(2019).

[8] L P Lai, Q R Zhuang, S W Liu, et al. Design of freeform lens for uniform illumination on panel of LED flat light. Infrared and Laser Engineering, 44, 561-566(2015).

[9] R M Wu, Z X Feng, Z R Zheng, et al. Design of freeform illumination optics. Laser & Photonics Reviews, 12, 1700310(2018).

[10] T T Hu, C M Zeng, C S Rui, et al. Optical design of freeform Fresnel TIR lens for LED uniform illumination. Infrared and Laser Engineering, 50, 20200183(2021).

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

[12] N Y Xu, L Chen, J Huang, et al. Review of design methodology for starting-point of freeform surface imaging optical system. Infrared and Laser Engineering, 51, 20210852(2022).

[13] J F Ye, W Wang, Z S Gao, et al. Modal wavefront estimation from its slopes by numerical orthogonal transformation method over general shaped aperture. Optics Express, 23, 26208-26220(2015).

[14] J F Ye, L Chen, X H Li, et al. Review of optical freeform surface representation technique and its application. Optical Engineering, 56, 110901(2017).

[15] R M Wu, P Liu, Y Q Zhang, et al. A mathematical model of the single freeform surface design for collimated beam shaping. Optics Express, 21, 20974-20989(2013).

[16] L Yang, F Shen, G Ding, et al. Freeform optical design of beam shaping systems with variable illumination properties. Optics Express, 60, 31993-32005(2021).

[17] V Oliker. Controlling light with freeform multifocal lens designed with supporting quadric method (SQM). Optics Express, 25, A58-A72(2017).

[18] D A Bykov, L L Doskolovich, E V Byzov, et al. Supporting quadric method for designing refractive optical elements generating prescribed irradiance distributions and wavefronts. Optics Express, 29, 26304-26318(2021).

[19] L Wang, K Qian, Y Luo. Discontinuous free-form lens design for prescribed irradiance. Applied Optics, 46, 3716-3723(2007).

[20] Z X Feng, L Huang, M Gong, et al. Beam shaping system design using double freeform optical surfaces. Optics Express, 21, 14728-14735(2013).

[21] Z Feng, L Huang, G Jin, et al. Designing double freeform optical surfaces for controlling both irradiance and wavefront. Optics Express, 21, 28693-28701(2013).

[22] C Bösel, N G Worku, H Gross. Ray-mapping approach in double freeform surface design for collimated beam shaping beyond the paraxial approximation. Applied Optics, 56, 3679(2017).

[23] S Wei, Z Zhu, Z Fan, et al. Least-squares ray mapping method for freeform illumination optics design. Optics Express, 28, 3811-3822(2020).

[24] H X Pan, Z P Su. Design of off-axis two-mirror laser-shaping system with freeform surface. Laser & Optoelectronics Progress, 57, 070801(2020).