[2] LI Wei-shan, CHEN Chen, ZHANG Yu, et al. Design of short focal digital projection lens based on ZEMAX[J]. Journal of Applied Optics, 2010, 31(5): 714-717.
[3] KUMLER J J, BAUER M L. Fish-eyelens designs and their relative performance[C]. International Symposium on Optical Science and Technology, International Society for Optics and Photonics, 2000: 360-369.
[5] GAO Yang, CHENG De-wen, XU Chen,et al. Design of an ultra-short throw catadioptric projection lens with a freeform mirror[C]. SPIE, 2016, 10154: 101540S.
[6] YANG Bo, LU Kan, ZHANG Wei,et al. Design of a free-form lens system for short distance projection[C]. SPIE, 2011, 8128: 81280E.
[7] LI Xu-yang, NI Dong-wei, YANG Ming-yang,et al. Design of large field of view space camera optical system based on freeform surfaces[J]. Acta Photonica Sinica, 2018, 47(9): 0922003.
[8] YANG Tong, CHENG De-wen, WANG Yong-tian. Freeform imaging spectrometer design using a point-by-point design method[J].Applied Optics, 2018, 57(16): 4718-4727.
[9] SHIKAMA S, SUZUKI H, TERAMOTO K. Optical system of ultra-thin rear projector equipped with refractive-reflective projection optics[C]. The Society for Information Display Symposium Digest, 2002, 46(2): 1250-1253.
[10] MATSUMOTO S, AMANO R, OKUDA M,et al. Ultra-short throw distance front projector with mirror-lens hybrid projection optical system[C]. Consumer Electronics, 2008, 1-2.
[12] CHENG De-wen, WANG Yong-tian, HUA Hong. Freeform optical system design with differential equations[C]. SPIE, 2010, 7849: 78490Q.
[13] MUOZA F, BENTEZB P, MIANO J C. High-order aspherics: The SMS nonimaging design method applied to imaging optics[C]. SPIE, 2008, 7100: 71000K.
[14] MIANO J C, BENTEZ P, LIN W, et al. An application of the SMS method for imaging designs[J]. Optics Express, 2009, 17(26): 24036-24044.
[15] YANG Tong, ZHU Jun, WU Xiao-fei, et al. Direct design of freeform surfaces and freeform imaging systems with a point-by-point three-dimensional construction-iteration method[J]. Optics Express, 2015, 23(8): 10233-10246.
[16] YANG Tong, ZHU Jun, HOU Wei, et al. Design method of freeform off-axis reflective imaging systems with a direct construction process[J]. Optics Express,2014, 22(8): 9193-9205.
[17] ZHU Jun, WU Xiao-fei, YANG Tong, et al. Generating optical freeform surfaces considering both coordinates and normal of discrete data points[J]. Journal of the Optical Society of America A, 2014, 31(11): 2401-2408.