High pressure sodium lamp having improved coloring rendition
US4580075A · kind A · utility
5Cited by
3References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 17, 1984 |
| Grant date | Apr 1, 1986 |
| Priority date | — |
| Expiry date | Dec 17, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/825
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A high pressure sodium lamp operated at increased pressure and having an improved color rendition is disclosed. The improved high pressure sodium lamp has an arc tube which reduces the sodium losses typically experienced by high pressure operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.