Precoated metal sheet for light reflectors
US7416774B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 2004 |
| Grant date | Aug 26, 2008 |
| Priority date | — |
| Expiry date | Feb 24, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31678
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention provides a precoated metal sheet for light reflectors having a high diffuse reflectance of visible lights and an excellent heat absorptivity, and also provides the electric or electronic apparatus using it. The precoated metal sheet comprises a metal sheet or plated metal sheet, a visible light reflective coat on one surface of the sheet, and a heat absorptive coat on the other surface of the sheet. The visible light reflective coat has a diffuse reflectance of visible rays of not less than 0.7 in a wavelength of 400 to 700 nanometers. The heat absorptive coat has a total emissivity of infrared rays of not less than 0.7 in the range of wave number of 600 to 3000 cm−1 measured at a certain temperature within the range of from 80 to 200 degrees centigrade.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.