High pressure discharge lamp and lighting method thereof
US9362103B2 · kind B2 · utility
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2Claims
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Key dates
| Filing date | Sep 17, 2014 |
| Grant date | Jun 7, 2016 |
| Priority date | — |
| Expiry date | Sep 17, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/822
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present high-pressure discharge lamp is composed of an arc tube part having an internal space, a pair of tungsten electrodes disposed in opposition to each other within the internal space, and mercury and halogen encapsulated in the internal space. The halogen is excessively encapsulated into the internal space relatively to the capacity of the internal space so as to establish an appropriate halogen cycle when the mercury partially deposits without evaporating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.