Discharge tube with interior and exterior electrodes
US6614185B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 7, 2001 |
| Grant date | Sep 2, 2003 |
| Priority date | — |
| Expiry date | May 2, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J65/046
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An internal electrode (14) is formed on the inner wall surface of a tube-shaped light emitting body (12) along the longitudinal direction of the light emitting tube (12). An external electrode (15) is formed on the exterior surface of the light emitting tube (12) along the longitudinal direction of the light emitting tube (12). An electric discharge starts between the internal electrode (14) and the external electrode (15) by applying a high-frequency voltage therebetween. Only one tube wall of the light emitting tube (12) lies between the internal electrode (14) and the external electrode (15), and the internal electrode (14) and the external electrode (15) can be brought close to each other. The limitation of an electric current running between the internal electrode (14) and the external electrode (15) can be reduced, and a starting voltage or a discharge-maintaining voltage can be lowered. In addition, the internal electrode (14) can be easily processed with high accuracy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.