High pressure metal halide arc lamp with xenon buffer gas
US4757236A · kind A · utility
10Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1986 |
| Grant date | Jul 12, 1988 |
| Priority date | — |
| Expiry date | Jul 29, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/125
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
High pressure xenon is used as a buffer gas in place of mercury in a high pressure sodium iodide arc discharge lamp. Xenon buffer gas has a more favorable influence than mercury on the sodium D-line spectrum and does not react with halides in the lamp fill. The use of xenon buffer gas increases the efficacy of the high pressure sodium iodide arc lamp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.