Fluorescent lamp generating different color light beams
US4835440A · kind A · utility
2Cited by
3References
15Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Oct 27, 1987 |
| Grant date | May 30, 1989 |
| Priority date | — |
| Expiry date | Oct 27, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/94
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A cathode is arranged at one end of an envelope of a fluorescent lamp, and a plurality of anodes are arranged at the other end. A discharge path-forming structure is disposed between the cathode and anodes. The structure comprises a vessel having an open end at the position adjacent to the anodes and an inner space, and also comprises a dividing element for dividing the inner space into a plurality of divided discharge paths each including a corresponding anode. A fluorescent material layer is coated on the inner surface of the vessel in a manner whereby the lamp generates different color light beams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.