Electrochromic single and two-core viologens and optical articles containing them
US9823534B2 · kind B2 · utility
1Cited by
8References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 16, 2014 |
| Grant date | Nov 21, 2017 |
| Priority date | — |
| Expiry date | Nov 17, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2001/1518
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to a group of novel electrochromic materials. More specifically, it relates to electrochromic materials based on either single or two-core viologen systems and the use of these viologen systems as a variable transmittance medium for the manufacture of an optical article, such as an ophthalmic lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.