Systems and methods for implementing selective electromagnetic energy filtering objects and coatings using selectably transmissive energy scattering layers
US9726790B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2016 |
| Grant date | Aug 8, 2017 |
| Priority date | — |
| Expiry date | Jan 26, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/52
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A system and method are provided for forming energy filter layers or shutter components, including energy/light directing/scattering layers that are actively electrically switchable. The energy filters or shutter components are operable between at least a first mode in which the layers, and thus the presentation of the shutter components, appear substantially transparent when viewed from an energy/light incident side, and a second mode in which the layers, and thus the presentation of the energy filters or shutter components, appear opaque to the incident energy impinging on the energy incident side. The differing modes are selectable by electrically energizing, differentially energizing and/or de-energizing electric fields in a vicinity of the energy scattering layers, including electric fields generated between a pair of transparent electrodes sandwiching an energy scattering layer. Refractive indices of transparent particles, and the transparent matrices in which the particles are fixed, are tunable according to the applied electric fields.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.