Environmentally friendly metal halogen lamp comprising burner made of quartz glass or ceramic glass
US8729801B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 8, 2010 |
| Grant date | May 20, 2014 |
| Priority date | — |
| Expiry date | Oct 8, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/827
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a metal halogen lamp comprising an elongated arc tube enclosed in a transparent casing, wherein the arc tube is made up of a hollow glass body comprising two end portions and a middle portion, and electrode is arranged on the respective end portion, which electrodes, each having an electrode end, upon connection to a power source and during operation of the metal halogen lamp, generate an arc between them; and the glass body encloses halogens (h) and metal atoms (m) and has a wall thickness which is thicker on the end portions than on the middle portion. The thicker end portions each have a length (L1) of at least one-third of the total length (L) of the arc tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.