Variable refractive index polymer materials
US7255914B2 · kind B2 · utility
3Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2004 |
| Grant date | Aug 14, 2007 |
| Priority date | — |
| Expiry date | Jan 17, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31855
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A new class of composite polymer films where the refractive index can be varied by simple compressive or extensive forces. The films are comprised of alternating layers of an elastomer and a glassy polymer or two different elastomers. When the layer spacing is much less than the wavelength of the probe light, these materials behave as effective medium composites. The layer thickness of the elastomer component and thus the effective index of the composite can be varied by compression, tension or shear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.