Electrodeless discharge lamp
US5519285A · kind A · utility
18Cited by
24References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 13, 1993 |
| Grant date | May 21, 1996 |
| Priority date | — |
| Expiry date | Dec 13, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J65/048
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrodeless discharge lamp includes a discharge gas sealed in a lamp tube. The discharge gas includes a halide of rare earth metal. An auxiliary electrode is disposed on or adjacent to an outer periphery wall of the lamp tube such that the auxiliary electrode is capacitively coupled to an interior space of the lamp tube. A main induction coil is wound around the lamp tube and receives power from a first high frequency power source. The auxiliary electrode receives power from a second high frequency power source. In operation, the electrodeless discharge lamp attains smooth lighting upon starting or restarting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.