Light control with color enhancement
US5173800A · kind A · utility
33Cited by
4References
10Claims
0Family size
Inventor
Key dates
| Filing date | Oct 7, 1991 |
| Grant date | Dec 22, 1992 |
| Priority date | — |
| Expiry date | Oct 7, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/285
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A window achieves broad band infrared reflection with a thin reflective layer and a clear interference coating on its outside surface. Color viewed from outside is enhanced by varying the thickness of the interference coating, while the window still exhibits neutral color to transmitted light. The reflective layer is formed of a metal such as copper, gold or copper alloy to provide enhanced IR reflection extending beyond ten microns. The metal is preferably deposited without agglomeration, and with uniformity that permits high and neutral transmission of visible light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.