Multi-layer assembly and method for controlling layer thicknesses
US10544501B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 24, 2014 |
| Grant date | Jan 28, 2020 |
| Priority date | — |
| Expiry date | Jan 10, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C2202/16
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A pre-fabricated assemblies and methods of use for coating substrates are described. The pre-fabricated assembly includes at least two layers in a stack, each layer includes at least one raw material. The raw material in each layer may be a dielectric material. One type of stack has one outer layer as an exposed layer. One type of stack has an exposed portion with each layer, and a portion of all layers is exposed. In use, a stack in a pre-fabricated assembly is positioned in a vacuum chamber system and energy is delivered sequentially to the exposed layer, removing at least a portion of each exposed layer. Each layer becomes an exposed layer and is deposited on the substrate in a sequential manner. The pre-assembled raw material stack is used to fabricate a multi-layered coating, such as a multi-layered coating for an optical or ophthalmic article.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.