![Design of arbitrarily shaped concentrators based on conformally optical transformation of nonuniform rational B-spline surfaces]()
Design of arbitrarily shaped concentrators based on conformally optical transformation of nonuniform rational B-spline surfacesJiang, Wei Xiang; Cui, Tie Jun; Cheng, Qiang; Chin, Jessie Yao; Yang, Xin Mi; Liu, Ruopeng; Smith, David R. · Applied Physics Letters · 2008