Process for replacing an initial outermost coating layer of a coated optical lens with a different coating layer or by depositing thereon a different coating layer
US7217440B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2003 |
| Grant date | May 15, 2007 |
| Priority date | — |
| Expiry date | Apr 13, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C2217/734
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention concerns a process for replacing an initial outermost coating layer of a coated optical lens with a layer of a new final coating having surface properties different from those of said initial outermost coating which comprises:(a) providing a coated optical lens having an initial outermost coating layer having a surface contact angle with water of at least 65°;(b) subjecting the initial outermost coating layer to a treatment with activated chemical species at about atmospheric pressure, and for less than one minute, in order there is obtained a treated surface having a contact angle with water of 10° or less; and(c) depositing on said treated surface a layer of a final coating having surface properties different from those of said initial outermost coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.