Polyester film reflector for a surface light source
US5672409A · kind A · utility
31Cited by
11References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 15, 1993 |
| Grant date | Sep 30, 1997 |
| Priority date | — |
| Expiry date | Nov 15, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31797
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A reflector used in a surface light source comprising a white polyester film in which fine voids are formed and whose apparent specific gravity is in the range of 0.5 to 1.2. The reflectance of the polyester film can be increased by the fine voids. When the reflector having a high reflectance is used in a surface light source having a side light system, a bright scope of, for example, a liquid crystal display easy to see can be obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.