High pressure sodium iodide arc lamp with excess iodine
US4605881A · kind A · utility
5Cited by
6References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 29, 1984 |
| Grant date | Aug 12, 1986 |
| Priority date | — |
| Expiry date | Nov 29, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/825
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Iodine in excess of sodium-iodide stoichiometry is used in the fill for a sodium iodide arc lamp which also includes sodium iodide and xenon buffer gas. The presence of free sodium near the arc tube walls is eliminated and efficacy is improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.