Low wattage metal halide arc discharge lamp having optimum efficacy
US4302699A · kind A · utility
9Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 24, 1980 |
| Grant date | Nov 24, 1981 |
| Priority date | — |
| Expiry date | Mar 24, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/18
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A single ended metal halide arc discharge lamp contains mercury, sodium halide, scandium, scandium halide and a starting gas. The molar ratio of sodium halide to scandium halide is between about 5 to 8 in order to obtain optimum luminous efficacy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.