High efficacy electrodeless high intensity discharge lamp
US4810938A · kind A · utility
66Cited by
7References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 1, 1987 |
| Grant date | Mar 7, 1989 |
| Priority date | — |
| Expiry date | Oct 1, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J65/042
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Improved efficacy and color rendition at white color temperatures is achieved in an electrodeless metal halide arc discharge lamp with a novel combination of arc tube fill materials, including sodium halide, cerium halide, and xenon. A preferred lamp structural configuration imparts further efficacy improvement at higher lamp operating temperatures and isothermal lamp operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.