[1] [1] HUANG J W. The optical design of ultra-short throw system for panel emitted theater video system［J］. Proceedings of SPIE, 2015, 9524: 952418.

[2] [2] FENG S Y, LIANG J Q, LIANG ZH ZH, et al.. Design of projection system for a micro-LED array［J］. Chinese Optics, 2019, 12(1): 88-96. (in Chinese)

[3] [3] ZHENG ZH R, SUN X T, LIU X, et al.. Design of reflective projection lens with Zernike polynomials surfaces［J］. Displays, 2008, 29(4): 412-417.

[4] [4] OGAWA J, AGATA K, SAKAMOTO M, et al.. Super-short-focus front projector with aspheric-mirror projection optical system［J］. Journal of the Society for Information Display, 2005, 13(2): 111-116.

[5] [5] MATSUMOTO S, AMANO R, OKUDA M, et al.. Ultra-short throw distance front projector with mirror-lens hybrid projection optical system［C］. Proceedings of 2008 Digest of Technical Papers-International Conference on Consumer Electronics, IEEE, 2008: 1-2.

[6] [6] NIE Y F, MOHEDANO R, BENTEZ P, et al.. Multifield direct design method for ultrashort throw ratio projection optics with two tailored mirrors［J］. Applied Optics, 2016, 55(14): 3794-3800.

[7] [7] YANG J M, LIU W Q, MENG X X, et al.. Design of coaxial short focal length catadioptric projection system［J］. Chinese Journal of Liquid Crystals and Displays, 2015, 30(5): 864-871.

[8] [8] AGCS T. Comparison of optical design methods of freeform surfaces for imaging applications［J］. Proceedings of SPIE, 2015, 9626: 962637.

[9] [9] YANG T, ZHU J, JIN G F. Design of a freeform, dual fields-of-view, dual focal lengths, off-axis three-mirror imaging system with a point-by-point construction-iteration process［J］. Chinese Optics Letters, 2016, 14(10): 100801.

[10] [10] ZHANG L, LIU D, SHI T, et al.. Optical free-form surfaces testing technologies［J］. Chinese Optics, 2017, 10(3): 283-299. (in Chinese)

[11] [11] MIANO J C, BENTEZ P, LIN W, et al.. Overview of the SMS design method applied to imaging optics［J］. Proceedings of SPIE, 2009, 7429, 74290C.

[12] [12] WASSERMANN G D, WOLF E. On the theory of aplanatic aspheric systems［J］. Proceedings of the Physical Society, Section B, 1949, 62(1): 2-8.

[13] [13] YANG T, JIN G F, ZHU J. Design of image-side telecentric freeform imaging systems based on a point-by-point construction-iteration process［J］. Chinese Optics Letters, 2017, 15(6): 062202.

[14] [14] 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, 2014, 31(11): 2401-2408.