Single cathode beam mode fluorescent lamp for DC use
US4494046A · kind A · utility
6Cited by
6References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 20, 1984 |
| Grant date | Jan 15, 1985 |
| Priority date | — |
| Expiry date | Jan 20, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S315/01
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The lamp shown herein is a beam mode fluorescent lamp for general lighting applications. The lamp comprises a light transmitting envelope, having a phosphor coating on its inner surface, enclosing a single electrode including a thermionic cathode for emitting electrons and an integral anode for accelerating the electrons and forming an electron beam, and a fill material, such as mercury, which emits ultraviolet radiation upon excitation. The electrode configuration provides for use of a single power source and minimal number of power leads. In addition, a separate cathode heater filament is not required.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.