Variable transmittance optical filter and uses thereof
US9235099B2 · kind B2 · utility
4Cited by
11References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 14, 2014 |
| Grant date | Jan 12, 2016 |
| Priority date | — |
| Expiry date | Aug 14, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Variable transmittance optical filters capable of transitioning from a light state to a dark state on exposure to UV radiation and from a dark state to a light state with application of an electric voltage are provided. The optical filters comprise a switching material that comprises one or more chromophores that have electrochromic and photochromic properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.