Optical coatings on plastic lenses by PICVD-technique

Wolfgang Moehl; U. Lange; Volker Paquet

doi:10.1117/12.192124

4 November 1994 Optical coatings on plastic lenses by PICVD-technique

Wolfgang Moehl, U. Lange, Volker Paquet

Proceedings Volume 2253, Optical Interference Coatings; (1994) https://doi.org/10.1117/12.192124
Event: 1994 International Symposium on Optical Interference Coatings, 1994, Grenoble, France

Abstract

PICVD has been proven as a versatile tool for preparation of optical fibers and planar wave guides as well as for deposition of IR-transparent mirrors, which are implemented in miniature incandescent light sources. These PICVD coatings provide a high potential of applications due to their unconditionally high resistivity to heat and stability to environmental attack. From its basic principles, the PICVD process is well suited for the treatment of thermally labile substrates as for instance plastic lenses. As it is well known, plasma treatment acts as adhesion promoter (at low temperatures), so that excellent interfacial adhesion (between bulk material and coating) even on polymer substrates (low specific surface energy) is one of the most striking features of PICVD. Pulsed plasma mode provides an almost ideal monolayer-by- monolayer growth control in conjunction with high deposition rates. Suitable choice of precursor materials (e.g. Ti-, Si-containing compounds) allows multilayer and/or tailored gradient designs in order to obtain anti-scratch or antireflective properties of the coatings on polymer substrates, which are used for ophthalmic purposes. Up-scaling problems are avoided by using a single working station arrangement. Production proofed microwave technique (2.45 GHz) is implemented for plasma generation, so that substrate temperature can be held at about 70 degree(s)C. Large scale field tests on the durability of the coating, according to DIN prescriptions, demonstrate an excellent endurance of PICVD-coatings. Full computer control, low production costs as well as high throughput guarantees a customer tailored solution.

Citation Download Citation

Wolfgang Moehl, U. Lange, and Volker Paquet "Optical coatings on plastic lenses by PICVD-technique", Proc. SPIE 2253, Optical Interference Coatings, (4 November 1994); https://doi.org/10.1117/12.192124

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