Light-redirecting optical structures
US7330315B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 23, 2004 |
| Grant date | Feb 12, 2008 |
| Priority date | — |
| Expiry date | Apr 23, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0053
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A plurality of microstructures is provided, with each microstructure having at least a first side and at least a second side terminating at a peak. At least some of the peaks can include an elevated portion to space the peaks away from adjacent optical sheets, surfaces, films, substrates, or other layers to minimize wet-out, Newton's rings, abrasions, moiré fringes, or other undesirable optical conditions. In other embodiments, an optical film is also provided that includes a first plurality of microstructures having a base, a first side, and a second side, and a second plurality of microstructures having a base, a first side, and a second side, the first side including a first planar surface, and the second side including a second planar surface and a third planar surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.