Flat bulb
US6608442B1 · kind B1 · utility
0Cited by
6References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 20, 2000 |
| Grant date | Aug 19, 2003 |
| Priority date | — |
| Expiry date | May 18, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01K7/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a bulb designed for emitting radiation through an emission surface ES of an envelope ENV which contains a radiation source ELM. According to the invention, the emission surface ES is substantially planar, while the radiation source defines a planar surface parallel to the emission surface. A bulb according to the invention is capable of emitting a homogeneous radiation towards a planar surface with a high radiation density.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.