Arc tube for electrodeless lamp
US5621275A · kind A · utility
3Cited by
9References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 1, 1995 |
| Grant date | Apr 15, 1997 |
| Priority date | — |
| Expiry date | Aug 1, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/361
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An arc tube for an electrodeless metal halide discharge lamp has an arc chamber fabricated from a material selected from the group consisting of magnesia-doped polycrystalline alumina, silicon dioxide doped polycrystalline alumina and mono-crystalline alumina. The arc chamber is tubular and has at least one end and has a given outside diameter. At least one end cap closes the at least one end of the arc chamber, the end cap being formed from magnesia-doped polycrystalline alumina and comprising a substantially cup-shaped member having an inside diameter which is sealed to the outside diameter of the arc chamber by a shrink-fit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.