Optimized design of LED freeform lens for uniform circular illumination. - Peng Liu; Reng-Mao Wu; Zhen-Rong Zheng; Haifeng Li 002; Xu Liu 022 (J. Zhejiang Univ. Sci. C, 2012)

Ray targeting for optimizing smooth freeform surfaces for LED non-rotational illumination. - Reng-Mao Wu; Peng Liu; Ya-qin Zhang; Zhen-Rong Zheng; Haifeng Li 002; Xu Liu 022 (J. Zhejiang Univ. Sci. C, 2013)