Light redirecting films pattern of variable optical elements
US7364342B2 · kind B2 · utility
67Cited by
39References
42Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 11, 2006 |
| Grant date | Apr 29, 2008 |
| Priority date | — |
| Expiry date | Jul 11, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2221/07
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Light redirecting films and film systems include a thin optically transparent substrate having a pattern of individual optical elements of well defined shape on or in the substrate. At least some of the optical elements may vary at different locations on the substrate to redistribute or redirect light passing through the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.