Scratch-resistant single-layer antireflective coating by a low-temperature sol-gel route

Herve G. Floch; Philippe F. Belleville

doi:10.1117/12.132008

7 December 1992 Scratch-resistant single-layer antireflective coating by a low-temperature sol-gel route

Herve G. Floch, Philippe F. Belleville

Proceedings Volume 1758, Sol-Gel Optics II; (1992) https://doi.org/10.1117/12.132008
Event: San Diego '92, 1992, San Diego, CA, United States

Abstract

A novel quarterwave-thick narrow-bandwidth antireflective coating has been developed for both plastic and vitreous substrates by a sol-gel route. This coating has revealed pronounced scratch- and climatic-resistances under adverse conditions. The single-layer coating consists basically of a composite material made of silica as the discontinuous phase and of a polytetrafluoroethylene-derived (Teflon^TM) organic polymer as the continuous phase. This leads to a fluorine-containing silica-based product so-called Fluosil-coating. The coating is applied by spin or dip from specific solutions at room temperature followed by a mild and short heat treatment. In addition to remarkable abrasion and environmental resistance properties, such coatings have displayed excellent laser-induced damage threshold levels surpassing uncoated substrates. We hope such a product might open new perspectives concerning household articles, architectural optical thin-films, ophthalmic uses and so on.

Citation Download Citation

Herve G. Floch and Philippe F. Belleville "Scratch-resistant single-layer antireflective coating by a low-temperature sol-gel route", Proc. SPIE 1758, Sol-Gel Optics II, (7 December 1992); https://doi.org/10.1117/12.132008

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