Electrodeless coupled discharge lamp having reduced spurious electromagnetic radiation
US4254363A · kind A · utility
20Cited by
7References
31Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 22, 1978 |
| Grant date | Mar 3, 1981 |
| Priority date | — |
| Expiry date | Dec 22, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J65/048
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrodeless discharge lamp having a sealed elongated toroidal envelope containing an ionizable medium with means for inducing ionization of the medium including a radio frequency energy supply coil formed by coating a transparent conductive material on the envelope. The coil is mounted to reduce the stray radio frequency field and the torroidal envelope is formed to allow for convection cooling of the lamp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.