Method for a member having microstructure elements arranged thereon. Three or more coherent beams are projected on a recording material from finite angular directions relative to each other to form a pattern on the recording material. The pattern recorded on the recording material is subjected to a developing...http://www.google.com.au/patents/US4523807?utm_source=gb-gplus-sharePatent US4523807 - Method for making a member having microstructure elements arranged thereon
