Unsaturated vapor high pressure sodium lamp getter mounting
US4859905A · kind A · utility
4Cited by
7References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 21, 1988 |
| Grant date | Aug 22, 1989 |
| Priority date | — |
| Expiry date | Nov 21, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/26
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An unsaturated vapor type high pressure sodium lamp includes an arc tube having a tubular ceramic envelope containing a dosing of sodium, mercury and a rare gas with an electrode sealed into each end of the envelope and an oxygen-absorbing getter telescoped over or affixed to the electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.