High efficiency optical devices
US6924014B2 · kind B2 · utility
37Cited by
125References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 3, 2003 |
| Grant date | Aug 2, 2005 |
| Priority date | — |
| Expiry date | Nov 3, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31938
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Optical devices according to the present invention include a multilayer optical film in which at least one of the layers comprises an oriented birefringent polymer. The multilayer optical film exhibits low absorptivity and can reflect light approaching at shallow angles as well as normal to the film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.