Sun protection device with angle-selective transmission properties
US9051771B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 15, 2007 |
| Grant date | Jun 9, 2015 |
| Priority date | — |
| Expiry date | Nov 22, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24322
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A sun protection device is described including at least one optically transparent dielectric layer, which on both sides is joined with a structural layer of an opaque or only partially translucent material. The two structural layers are structured subject to the formation of light passage openings and light-impermeable zones in such a manner that optical radiation incident on the outer structural layer under a predetermined angular range is blocked through interaction of the two structural layers and a proportion of optical radiation, which is incident on the second structural layer under a different angular range is able to pass the structural layers unhindered. The sun protection device makes possible an angle-selective transmission of sun radiation to achieve an anti-glare effect and at the same time allowing vision in a downward direction without moving parts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.