Ceramic arc tube for a discharge lamp and method of making same
US8319431B2 · kind B2 · utility
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2References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2010 |
| Grant date | Nov 27, 2012 |
| Priority date | — |
| Expiry date | Oct 24, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/82
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A High Intensity Discharge lamp and method of making same having an arc tube defining a discharge chamber with opposite ends of the tube each receiving an electrode extending into the discharge chamber and define an axial gap therebetween. A thermal shield extends from each opposite end of the arc tube and defines a radial gap with the tube. The thermal shields in some embodiments extend from end plugs in the arc tube; and, in another embodiment use formed, integrally with one arc tube sections and the tube sections joined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.