Brightness enhancement film using an array of light concentrators
US7581867B2 · kind B2 · utility
134Cited by
31References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 10, 2006 |
| Grant date | Sep 1, 2009 |
| Priority date | — |
| Expiry date | Sep 14, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0065
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A brightness enhancement article and illumination system provides light from a two-dimensional surface. The brightness enhancement article has a plurality of light collecting structures wherein each light collecting structure is longitudinally extended in a length direction along the surface. The structures may have various lengthwise shapes such as being curved, concentric, radial, or of varying thickness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.