Spectrum-controllable reflective polarizers having electrically-switchable modes of operation
US6965420B2 · kind B2 · utility
25Cited by
5References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 5, 2003 |
| Grant date | Nov 15, 2005 |
| Priority date | — |
| Expiry date | Sep 5, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/40
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light controlling film is disclosed, comprising a polymerized polymer network varying spatially in a direction normal to the film surface, where the polymerized polymer network is a crosslinked high molecular weight polymeric material mixed with a low molecular weight nematic material exhibiting cholesteric liquid crystal (CLC) order, wherein an electric field impressed in the film controls the reflection bandwidth of circularly polarized light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.