Method for laminating an interference coating comprising an organic/inorganic layer, and item thus obtained
US10732324B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 5, 2016 |
| Grant date | Aug 4, 2020 |
| Priority date | — |
| Expiry date | Aug 5, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2300/22
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a method for preparing an optical system item having a non-zero radius of curvature and coated with an interference coating. Said method includes: a) providing a thermoplastic film coated with a multilayer interference coating containing at least one layer having a refractive index of greater than 1.65 and at least one layer having a refractive index of less than or equal to 1.65, at least one of the interference coating layers being a vacuum-deposited organic/inorganic layer, b) laminating said coated thermoplastic film, by means of an adhesive layer, onto an optical system item including a substrate, and c) recovering said optical system item, including a substrate coated with the adhesive layer, from the thermoplastic film and the multilayer interference coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.