High-pressure sodium vapor discharge lamp
US4795943A · kind A · utility
8Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 28, 1987 |
| Grant date | Jan 3, 1989 |
| Priority date | — |
| Expiry date | Apr 28, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/825
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A high-pressure sodium vapor discharge lamp having a ceramic discharge vessel, which has over a length L a substantially constant inner diameter and in which electrodes are arranged opposite to each other at a relative distance D. The lamp emits white light during operation and consumes a power of at most 50 watts. The lamp has a high efficiency and good color rendering due to the fact that D/L.ltoreq.0.5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.