[1] [1] F. M. Steranka, J. Bhat, D. Collins et al.. High power LEDs technology status and market applications［J］. Physical Status Solid (A) Applied Research, 2002, 194(2): 380～388

[2] [2] David G. Pelka, Kavita Patel. An overview of LED applications for general illumination［C］. SPIE, 2003, 3781: 15～26

[3] [3] Wen Shangsheng, Zhao Baofeng, Wang Baozheng et al.. Chinese patent analysis on LED thermal dissipation technology［J］. Natural Science Journal of Hainan University, 2010, 28(3): 229～232

[4] [4] Jin Peng, Yu Chunyu, Zhou Qifeng et al.. Superior application of LED to street lighting［J］. Opt. & Precision Eng., 2011, 19(1): 51～55

[5] [5] Darsten Eichhom. LED in automotive lighting［C］. SPIE, 2006, 6134: 613405

[6] [6] Yang Dongsheng. The status and trends of large-size LED backlight［J］. Information Technology and Standardization, 2010, 10: 17～21

[7] [7] XLamp MT-g Easy White LEDs [OL]. [2011-11-16]. http://www.cree.com/products/xlamp_mtg.asp.

[8] [8] Michael Bass, Eric W. Van Stryland, David R. Williams et al.. Handbook of Optics 2nd ed ［M］. Columbus: McGraw-Hill, Inc, 1995

[9] [9] Ding Yi, Gu Peifu. Freeform reflector for uniform illumination［J］. Acta Optica Sinica, 2007, 27(3): 540～544

[10] [10] Wang Wei. Study on the Design Method of Uniform Illumination Based on Transmitted Free form Surface Theory［D］. Hangzhou: Zhejiang University, 2006. 28~54

[11] [11] Yu Guiying, Jin Ji, Ni Xiaowu et al.. Design for LED uniform illumination reflector based on etendue［J］. Acta Optica Sinica, 2009, 29(8): 2297～2301

[12] [12] Zheng Zhenrong, Hao Xiang, Liu Xu. Freeform surface lens for LED uniform illumination［J］. Appl. Opt., 2009, 48(35): 6627～6634

[13] [13] Winston Roland, C. Miano Juan, Benítez Pablo. Nonimaging Optics［M］. Elsevier Academic Press, 2004. 181~219

[14] [14] Stavroudis, Orestes Nicholas. The Mathematics of Geometrical and Physical Optics [M]. John Wiley 2006. 183~184

[15] [15] Ding Deqiang, Ke Xizheng. Research on generalized mathematic radiation model for white LED［J］. Acta Optica Sinica, 2010, 30(9): 2536～2540

[16] [16] Tu Dawei, Wu Rengmao, Yang Hengliang et al.. Effect of optical structure on output light intensity distribution in LED package［J］. Opt. & Precision Eng., 2008, 16(5): 832～838

[17] [17] C. C. Sun, T. X. Lee, S. H. Ma et al.. Precise optical modeling for LED lighting verified by cross correlation in midfield region［J］. Opt. Lett., 2006, 31(14): 2193～2195