Automotive discharge lamp
US8242678B2 · kind B2 · utility
0Cited by
4References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2008 |
| Grant date | Aug 14, 2012 |
| Priority date | — |
| Expiry date | Jan 7, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/34
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An automotive discharge lamp, having an inner tube including a light emitting unit having a first space therein and seal portions formed on the light emitting unit, a discharge medium containing a first gas enclosed in the first space, a metal foil sealed in the seal portions, electrodes with one end connected to the metal foil and other end extended into the first space, and an outer tube connected to the inner tube to form a second space between the outer tube and the inner tube, wherein the second space has a second gas enclosed therein and the oxygen concentration in the second space is 1.0 volume % or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.