Arc discharge lamp containing scandium and scandium halide
US4310774A · kind A · utility
3Cited by
8References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 3, 1980 |
| Grant date | Jan 12, 1982 |
| Priority date | — |
| Expiry date | Mar 3, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/18
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A metal halide arc discharge lamp comprises an arc tube having electrodes at its ends and containing a fill including mercury, a starting gas, elemental scandium and at least about 2.6.times.10.sup.-6 gram atoms of scandium halide and 3.0.times.10.sup.-5 gram atoms of sodium halide per centimeter of arc length.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.