Signage having films to reduce power consumption and improve luminance uniformity and method for using same
US6641880B1 · kind B1 · utility
27Cited by
10References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2000 |
| Grant date | Nov 4, 2003 |
| Priority date | — |
| Expiry date | May 23, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249953
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A lighted sign housing is provided with a diffuse reflective film that is selected based on its reflectivity and luminance uniformity in order to reduce power consumption required for a given luminance while also increasing luminance uniformity. A method of using such film is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.