Miniature ceramic metal halide lamp having a thin leg
US8415883B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 26, 2007 |
| Grant date | Apr 9, 2013 |
| Priority date | — |
| Expiry date | Jan 21, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/827
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A low watt ceramic metal halide lamp has a body with a discharge chamber disposed therein. First and second hollow legs extend from the discharge chamber and received first and second electrode assemblies, respectively, therethrough with first ends of the electrode assemblies disposed in spaced relation in the discharge chamber. Use of thin legs limits heat flux from the discharge chamber. Preferably, thin legs are defined by a load dissipation factor of the ceramic part being less than 0.065 mm2/watt. In addition, thermal conductance along the leg is controlled via a load dissipation factor of the molybdenum mandrel portion of the electrode assembly being maintained less than 0.0008 mm2/watt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.