A method and system for replicating microstructures surface relief patterns, such as diffraction patterns including holograms, by casting. A liquid casting resin is held between a surface relief master of the microstructure to be replicated and a substrate while the resin is hardened by actinic radiation...http://www.google.com.au/patents/US5116548?utm_source=gb-gplus-sharePatent US5116548 - Replicaton of microstructures by casting in controlled areas of a substrate
