Metal halide lamp with improved lumen output
US4866342A · kind A · utility
9Cited by
5References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 17, 1988 |
| Grant date | Sep 12, 1989 |
| Priority date | — |
| Expiry date | May 17, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/125
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The luminous efficacy of a metal halide lamp containing sodium iodide and scandium iodide is increased, while color rendering index is maintained or improved by the addition of critical amounts of thallium iodide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.