Dual titanium nitride layers for solar control
US6451182B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 27, 2000 |
| Grant date | Sep 17, 2002 |
| Priority date | — |
| Expiry date | Dec 27, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/208
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A solar control member utilizes a combination of layers that include spaced apart titanium nitride layers to selectively transmit a higher percentage of visible light than near infrared energy, with a low visible light reflection. The titanium nitride layers are spaced apart by a distance that promotes optical decoupling with respect to occurrence of constructive and destructive interference of visible light propagating between the two titanium nitride layers. In one embodiment, the titanium nitride layers are spaced apart by a laminating adhesive layer. In another embodiment, the titanium nitride layers are formed on opposite sides of a substrate. Each titanium nitride layer is sputter deposited. Care is taken to ensure that each layer does not become too metallic and to ensure that excessive oxygen is not incorporated into the layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.