Brightness enhancement article
US7384173B2 · kind B2 · utility
24Cited by
16References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 30, 2004 |
| Grant date | Jun 10, 2008 |
| Priority date | — |
| Expiry date | Mar 3, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/045
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A brightness enhancement article for use in an optical system is disclosed. The brightness enhancement article has a structured surface including light directing protrusions. The light directing protrusions include a peak and a base, the peak having a rounded contour defined by a first pair of prism facets and the base defined by a second pair of prism facets. The first pair of prism facets has a first included angle and the second pair of prism facets has a second included angle, such that the first included angle is different than the second included angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.