Metallic halide electric discharge lamps
US4678960A · kind A · utility
18Cited by
7References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 1, 1985 |
| Grant date | Jul 7, 1987 |
| Priority date | — |
| Expiry date | Aug 1, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/827
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A high intensity gaseous discharge lamp employs a discharge medium which emits radiation at multiple, narrow line wavelengths which combine to produce white light. Coatings are applied to the arc tube to prevent emission of certain ultraviolet and infrared wavelengths, and a cylindrical barrier blocks certain long wavelength infrared radiation from being emitted by the lamp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.