Low wattage metal halide lamp with inverted domed sleeve
US4620125A · kind A · utility
8Cited by
1References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 29, 1984 |
| Grant date | Oct 28, 1986 |
| Priority date | — |
| Expiry date | Oct 29, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/827
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A low wattage metal halide discharge lamp includes an evacuated envelope wherein is disposed a heat reducing member having an arc tube therein. The heat reducing member and the arc tube have a metal band an outer strap member adjacent one another and adjacent an electrode with the metal band, strap member and electrode all electrically connected to an electrical lead of one polarity whereby sodium losses from the arc tube are reduced. Importantly, the evacuated envelope includes a getter and the heat reducing member is in the form of a domed sleeve having an open end directed away from the getters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.