The coating of plastics for optical applications is intended to improve the mechanical durability of soft polymers and to serve an antireflection function. Usually a classic four-layer antireflection system is added on top of a single-layer hard coating. With needle optimization, an alternative coating design has been developed. The design is characterized by thin high-refractive-index layers that are almost evenly distributed over the whole stack. Plasma ion-assisted deposition was used to deposit coatings upon poly(methyl methacrylate), polycarbonate, and cyclo-olefin copolymer. Uniform antireflection and high scratch resistance have been achieved.
© 2002 Optical Society of America
Ulrike Schulz, Uwe B. Schallenberg, and Norbert Kaiser, "Antireflection Coating Design for Plastic Optics," Appl. Opt. 41, 3107-3110 (2002)