[1] KUDAEV S, SCHREIBER P. Automated optimization of non-imaging optics for luminaires[C].SPIE, 2005, 5962: 1-9.
[3] YI D, XU L, ZHEN RONG Z, PEI FU G. Freeform LED lens for uniform illumination[J]. Optics Express, 2008, 16(17): 12958-12966.
[4] ZHEN RONG Z, XIANG H, XU L. Freeform surface lens for LED uniform illumination[J]. Applied Optics, 2009, 48(35): 6627-6634.
[6] XU Huan, LI Xiang-ning, ZHOU Guo. Design of Fresnel lens with big grooves and equal thickness based on the software Zemax[J]. University of Shanghai for Science and Technology, 2007, 29(1): 99-102.
[8] CHEN J J, LIN C T. Freeform surface design for a light-emitting diode–based collimating lens[J]. Optical Engineering, 2010, 49(9): 3001-3008.
[9] DANIEL V M, MARIO G M, ANTONIO A, EUSEBIO B. High-efficiency light-emitting diode collimator[J]. Optical Engineering, 2010, 49(12): 3001-3008.
[10] HSIEH W C, CHEN Y Y, LEE Y C, et al. Design and measurement of TIR Lens of MR16-Compatible LED lamp without aspherical surface for high directivity[C]. SPIE , 2010, 7717: 1-8.
[11] WANG Cheng-liang, LI Xiang-ning, HE Li-qing. Constructing user defined surface in ZEMAX[J]. Optical in Struments, 2001, 23(3): 23-26.