High-pressure discharge lamp and arc tube with long operating lifetime and high impact resistance
US6650054B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 2001 |
| Grant date | Nov 18, 2003 |
| Priority date | — |
| Expiry date | Jan 9, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/363
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A high-pressure discharge lamp having an arc tube that includes a main tube part and a pair of capillary tube parts is provided. The main tube part includes a pair of electrodes and a metal halide enclosed, and the pair of capillary tube parts is arranged at the of the main tube part. The pair of capillary tube parts is sealed by means of a seal member to a different one of the feeders, and supplies electricity to each of the electrodes. At least one of the feeders includes a first conductive member that is resistant to halides and sealed to the capillary tube part, and a second conductive member that is connected to the first conductive member outside the capillary tube part and fixed at an outer end of the capillary tube part by means of the seal member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.