[1] Wu Rengmao, Tu Dawei, Huang Zhihua et al.. Illuminative uniformity design of a LED illumination system ［J］. Optical Technique, 2009, 35(1): 74～76

[2] Zhuo Jinzhai, Wang Min, Zhuang Zhenfeng. Design of efficient matched mirrors and arrays for small angle LED［J］. Laser & Optoelectronics Progress, 2010, 47(11): 112202

[3] Zhu Gendi, Liu Minjuan. Research on the illuminance characteristics of LED surguical luminaire［J］. Chinese J. Medical Instrumentation, 2009, 33(3): 183～187

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

[5] Ding Yi, Zheng Zhenrong, Gu Peifu. Freeform lens design for LED illmination［J］. Acta Photonica Sinica, 2009, 38（6）: 1486～1486

[6] Yi Ding, Xu Liu, Zhenrong Zheng et al.. Freeform LED lens for uniform illumination［J］. Opt. Express, 2008, 16(17): 12958～12966

[7] Li Jing. Lens design for uniform illumination of rectangle area with LED［J］. J. Appl. Opt., 2011, 32(2): 211～214

[8] Yi Luo, Zexin Feng, Yanjun Han et al.. Design of compact and smooth free-form optical system with uniform illuminance fo LED source［J］. Opt. Express, 2010, 18(9): 9055～9063

[9] Li Cheng, Li Nong. A LED lens design method for uniform illumination［J］. China Illuminating Engineering Journal, 2010, 21(3): 46～49

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

[11] Liang Chengyuan. The Secondary Optic Design of LED［D］. Zhejiang University,2008,14～20

[12] Huang Qilu, Wu Fengtie. Investigation of uniform illumination of near-field targets using a conic light-emitting diode array［J］. Acta Optica Sinica, 2010, 30(10): 3039～3043

[13] Particular Requirements for the Safety of Surgical Luminaries and Luminaries for Diagnosis. YY 0627-2008［S］. Beijing: China Standard Press,2008