High pressure metal halide lamp
US5504392A · kind A · utility
6Cited by
2References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 26, 1994 |
| Grant date | Apr 2, 1996 |
| Priority date | — |
| Expiry date | May 26, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/827
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The high pressure metal halide lamp has in a light transmitting discharge vessel discharge electrodes and a filling made of a rare gas, a buffer gas and at least one halide chosen from hafnium and zirconium bromide and chloride. The filling also includes a metal chosen from tin, tantalum and antimony in elementary form and is free from iodine in an amount exceeding 0.5 .mu.mol/cm.sup.3 discharge space. The lamp has considerably improved light generating properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.