By Geng, Noh, Drevensek-Olenik, Rupp, Lenzini, Lagerwall
Reflection at two spheres. Ray simulation as supporting information of the publication "High-fidelity spherical cholesteric liquid crystal Bragg reflectors generating unclonable patterns for secure authentication" by Yong Geng, JungHyun Noh, Irena Drevensek-Olenik, Romano Rupp, Gabriele Lenzini and Jan P. F. Lagerwall