Laminated glazing with coloured reflection and high solar transmittance suitable for solar energy systems
US10953635B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 25, 2018 |
| Grant date | Mar 23, 2021 |
| Priority date | — |
| Expiry date | Sep 22, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24967
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A laminated and etched glazing unit having a substrate and a multi-layered interference filter each delimited by two main faces; the incident medium having a refractive index ninc=1, the substrate having a refractive index nsubstrate defined as: 1.45≤nsubstrate≤1.6 at 550 nm, and the exit medium being defined as follows 1.45≤nexit≤1.6 at 550 nm; and wherein the following requirements are met: The saturation of the colour is higher than 8 at near-normal angle of reflection, except for grey and brown; the visible reflectance is higher than 4%; the variation of the dominant wavelength MD of the dominant colour MD of the reflection is smaller than 15 nm for θr<60°; and the total hemispherical solar transmittance is above 80%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.