High-brightness flat lamp structure
US6841923B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2003 |
| Grant date | Jan 11, 2005 |
| Priority date | — |
| Expiry date | Jul 27, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2105/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A high-brightness flat lamp structure comprises a reflecting plate, a plurality of UV light sources, a macromolecular polymer layer and a fluorescent powder layer. The UV light sources and the macromolecular polymer layer are sandwiched between the reflecting plate and the fluorescent powder layer. The functions of diffusing and guiding light of the macromolecular polymer layer are exploited to let UV lights emitted by the UV light sources and reflected by the reflecting plate excite the fluorescent powder layer to radiate high-brightness visible lights. Besides, macromolecular polymer and fluorescent powder can be mixed up to form a mixed layer of macromolecular polymer and fluorescent powder to let UV lights emitted by the UV light sources and reflected by the reflecting plate directly excite fluorescent powder to radiate high-brightness visible lights.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.