High pressure discharge lamp
US5986405A · kind A · utility
10Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 21, 1997 |
| Grant date | Nov 16, 1999 |
| Priority date | — |
| Expiry date | Nov 21, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/82
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The high pressure discharge lamp has a discharge vessel (1) mounted in an outer envelope (4) in which an oxygen dispenser (30) is disposed. The oxygen dispenser (30) contains silver oxide and may be disposed at a location where it obtains a temperature of at least 340.degree. C. during operation of the lamp, at which temperature the oxide is decomposed and oxygen is released. The deposit of black coatings originating from hydrocarbon contaminations is thereby prevented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.