High-pressure discharge lamp with end seal evaporation barrier
US5198722A · kind A · utility
3Cited by
1References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 31, 1990 |
| Grant date | Mar 30, 1993 |
| Priority date | — |
| Expiry date | Oct 31, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/366
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A high pressure discharge lamp having a translucent sintered aluminum oxide envelope, has a tubular current lead-in member, secured in a gas tight manner by an end-plug secured to the current lead-in member by a magnesium oxide containing glass seal and an aluminum oxide disk bonded to the outer surface of the end plug and extending over the glass seal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.