1. (Invited talk) Rengmao Wu, and Zhenrong Zheng, "Monge-Ampère equation in freeform illumination optics," in SIAM (Society for Industrial and Applied Mathematics) Conference on Computational Science and Engineering, Atlanta, Georgia, USA, March 1, 2017.
2. (Invited talk) Rengmao Wu, Zhenrong Zheng, Pablo Benitez, and Juan C. Miñano, "The Monge-Ampere Equation Design Method and Its Application to Beam Shaping," in Imaging and Applied Optics 2015, Arlington, USA, June 7, 2015.
3. Rengmao Wu, Pablo Benítez, and Juan C. Miñano, "The Monge-Ampére equation method in freeform optics design," in International Optical Design Conference (IODC) 2014, Hawaii, USA, June 23, 2014. (Oral presentation)