[1] DING Y,LIU X,ZHENG Z R. Freeform LED lens foruniform illumination[J]. Optics Express, 2008, 16(17): 12958-12966.
[2] SU Z P, QUE L Z, ZHU Z W. Optical system design of the compact collimator for LED source[J]. Laser Optoelectronics Progress, 2012, 49(2): 0222031(in Chinese).
[3] SUN C C,CHEN C Y,HE H Y. Precise optical modeling for silicate-based white LEDs[J]. Optics Express, 2008, 16(24): 20060-20066.
[4] SUN C C,CHIEN W T,MORENO I. Analysis of the far-field region of LEDs[J]. Optics Express, 2009, 17(12): 13918-13922.
[5] WANG K, LIU S,CHEN F,et al. Freeform LED lens for rectangularly prescribed illumination[J]. Journal of Optics, 2009, A11(10): 105501-105505.
[6] DING Y, GU P F. Freeform reflector for uniform illumination[J]. Acta Optica Sinica, 2007, 27(3): 540-544(in Chinese).
[7] DING Y, ZHENG Z R, GU P F. Freeform lens design for LED illumination[J]. Acta Photonica Sinica, 2009, 38(6): 1486-1490(in Chinese).
[8] LUO X X, LIU H, LU Z W, et al. Automated optimization of free-form surface lens for LED collimation[J]. Acta Photonica Sinica, 2011,40(9): 1351-1355(in Chinese).
[9] WANG J W,CHEN Y Y,TENG Y T. Designing uniform illuminance systems by surface-tailored lens and configurations of LED arrays[J]. Journal of Dispersion and Technology, 2009, 41(5): 94-103.
[10] QIN Z,WANG K,CHEN F. Analysis of condition for uniform lighting generated by array of light emitting diodes with large view angle[J]. Optics Express, 2010, 18(2): 17460-17476.
[11] SU Z P,XUE D L,JI Z C. Designing LED array for uniform illumination distribution by simulated annealing algorithm[J]. Optics Express, 2012, 20(s6): 843-855.
[12] WANG J W, SU Z P, YUAN Z J, et al. Study on uniformity of LED array illumination distribution on target plane[J]. Acta Photonica Sinica, 2014, 43(6): 919-924(in Chinese).
[13] ZHAO Z P,JI L Y,SHEN Y X. Research of illumination uniformity for LED arrays based on PSO algorithm[J]. Chinese Journal of Luminescence, 2013, 34(12): 1677-1681(in Chinese).