Antireflective coatings for optical lenses based on plasma-etched melamine

Organic layers can be used to realize special functions in optical interference coatings. Melamine was thermally evaporated and characterized as thin film on optical glass and silicon substrates. A plasma-etching procedure was applied to produce nanostruc-tures on top of the organic layer. Etched melamine layers are useful to provide antireflective properties especially on curved substrates and for a broad light incidence range.