Comparison of hard coatings on CR 39 ophthalmic lenses prepared by PECVD and other technologies

Werner Klug; Rainer Gegenwart; Reinhard Herrmann; Roland Schneider

doi:10.1117/12.20525

1 August 1990 Comparison of hard coatings on CR 39 ophthalmic lenses prepared by PECVD and other technologies

Werner Klug, Rainer Gegenwart, Reinhard Herrmann, Roland Schneider

Proceedings Volume 1275, Hard Materials in Optics; (1990) https://doi.org/10.1117/12.20525
Event: The International Congress on Optical Science and Engineering, 1990, The Hague, Netherlands

Abstract

Using a parallel plate reactor we optimized a PECVD process and coated Si02-films on CR 39 lenses with layer-thicknesses of 2,5 trn to 5 I_tIn. Besides high transmittance in the VIS-range we obtained refractive indices between n=1.46 and n=1.49 depending on the process parameters. We achieved deposition rates up to 30 A/s and thickness uniformities of 10 %. The abrasion resistance of these layers were tested with different inethodes and gave better results compared with techniques like lAD or lacquering.

Citation Download Citation

Werner Klug, Rainer Gegenwart, Reinhard Herrmann, and Roland Schneider "Comparison of hard coatings on CR 39 ophthalmic lenses prepared by PECVD and other technologies", Proc. SPIE 1275, Hard Materials in Optics, (1 August 1990); https://doi.org/10.1117/12.20525

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