Patent · US Active

Electrode, and high-pressure discharge lamp comprising said electrode

US9147569B2 · kind B2 · utility

0Cited by

1References

16Claims

0Family size

Assignee

OSRAM GmbH · DE

Inventors

Norbert Magg · Berlin, DE
Simon Lankes · Falkensee, DE
Peter Flesch · Berlin, DE
Andre Nauen · Regensburg, DE

Key dates

Filing date	May 8, 2012
Grant date	Sep 29, 2015
Priority date	—
Expiry date	May 8, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH01J61/86
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An electrode (1) for a high-pressure discharge lamp, having an electrode head (3) and an electrode rod (2), connected to electrode head (3) and defines a longitudinal axis (L). The electrode head (3) comprises a main section (4) on the same side as the electrode rod (2), an intermediate section (5) and an end section (9) on the opposite side from the electrode rod (2). The end surface of the end section (9) of the electrode head (3) is formed at least approximately semicircularly, and at least one subsection of the intermediate section (5) is cylindrically shaped. The extent (D2) of the cylindrical subsection of the intermediate section (5) in at least one direction perpendicular to the longitudinal axis is greater than the diameter (D3) of the semicircular end surface of the end section (9), but less than the largest transverse extent (D1) of the main section.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.