TY - GEN AU - Wu,Rengmao AU - Chang,Shengqian AU - Zheng,Zhenrong AU - Zhao,Liefeng AU - Liu,Xu TI - Formulating the design of two freeform lens surfaces for point-like light sources SN - 1539-4794 PY - 2018///0404 N1 - Publication Type: Journal Article UR - https://doi.org/10.1364/OL.43.001619 ER -