Article coated with a low refractive index layer based on fluorinated organosilicon compounds
US12117591B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 4, 2020 |
| Grant date | Oct 15, 2024 |
| Priority date | — |
| Expiry date | Jul 20, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/041
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An article including a substrate having at least one main surface coated with a layer A having a refractive index lower than or equal to 1.50, said layer A being obtained by deposition of activated species issued from at least one compound C in gaseous form, containing in its structure at least one Si-fluoroalkyl group, at least one carbon atom, at least one hydrogen atom and optionally at least one nitrogen atom and/or at least one oxygen atom, the deposition of said layer A being carried out by applying a bombardment with an ion beam to layer A while layer A is being formed, and said layer A being formed in the absence of inorganic precursor compounds. Application to the preparation of interferential coatings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.