Composition and method of making high-reflection silver mirrors or thin-film optical filters
US6839176B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2002 |
| Grant date | Jan 4, 2005 |
| Priority date | — |
| Expiry date | Dec 16, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S359/90
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An environmentally stable Silver containing mirror or thin-film optical filter having very high reflection values over a large spectral and angular range, and a method for constructing the mirror, or thin-film optical filter, comprising using a substrate that has been exposed to an Argon rich ion stream to prepare the surface. A medium index material is then deposed on the surface with Argon ion bombardment. The Silver is then deposited until it is opaque. A second deposition of the medium index material is next done with the Argon ion bombardment. The coating is then followed with a standard ion assisted deposed optical film to maximize reflection at the desired wavelength and angle of incidence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.