Patent · US Expired

Discharge lamp with dielectrically impeded electrodes

US6469435B1 · kind B1 · utility

10Cited by

4References

5Claims

0Family size

Assignee

Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH · DE

Inventors

Michael Seibold · Schwäbisch Gmünd, DE
Michael Ilmer · Augsburg, DE
Angela Eberhardt · Augsburg, DE

Key dates

Filing date	Feb 2, 2000
Grant date	Oct 22, 2002
Priority date	—
Expiry date	Feb 2, 2020

Classification

Technology area (CPC H)Electricity
CPC primaryH01J9/247
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A discharge lamp, suitable for operation by means of dielectrically impeded discharge, having electrodes arranged on the wall of the discharge vessel, has at least one dielectric layer which covers at least a part of the electrodes and, optionally, the discharge vessel wall as well. A phosphor and/or reflective layer is arranged on the at least one dielectric layer. According to the invention, at least the dielectric layer arranged directly underneath the phosphor or reflective layer consists of a glass solder whose viscosity variation as a function of temperature is irreversible, in particular of a sintered glass ceramic. This prevents this layer from re-melting during the fabrication process and thereby tearing the overlying porous reflective and/or phosphor layers.

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