High pressure discharge lamp with auxiliary lamp
US9129793B2 · kind B2 · utility
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Key dates
| Filing date | Feb 15, 2012 |
| Grant date | Sep 8, 2015 |
| Priority date | — |
| Expiry date | Jun 16, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/547
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A high pressure discharge lamp with auxiliary lamp comprises: a high pressure discharge lamp having an arc tube and at least one sealing portion, a pair of main electrodes, and a pair of feeders supplying power to the main electrodes; an auxiliary lamp having an airtight case, an inner electrode, and an outer electrode, wherein the inner electrode is arranged at a position so as to part the inner space to large and small spaces, the outer electrode is arranged at a position so as to face the large space, the auxiliary lamp as arranged as the large space faces the sealing portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.