Transparent layered element having a specular transmission and a diffuse reflection of radiation incident thereon
US10094959B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2014 |
| Grant date | Oct 9, 2018 |
| Priority date | — |
| Expiry date | May 10, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/62
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A transparent layered element includes two outer layers that each have a smooth outer main surface and are constituted of dielectric materials having substantially the same refractive index. The layered element also includes a central layer inserted between the outer layers. The central layer is formed either by one or more layers made of metallic material or made of dielectric material having a refractive index different from that of the outer layers. All of the contact surfaces between two adjacent layers of the layered element are textured and parallel to one another. A ratio of a total reflection of the layered element on a side of a first outer layer in a given wavelength range to a total reflection of the layered element on a side of a second outer layer in the given wavelength range is greater than or equal to 1.5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.