Patent · US Expired

Gas discharge lamp comprising a phosphor layer

US6777879B2 · kind B2 · utility

5Cited by

12References

7Claims

0Family size

Assignee

KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

Thomas Juestel · Aachen, DE
Wolfgang Busselt · Roetgen, DE
Claus Feldmann · Aachen, DE
Walter Mayr · Alsdorf, DE

Key dates

Filing date	Jul 11, 2002
Grant date	Aug 17, 2004
Priority date	—
Expiry date	Jul 11, 2022

Classification

Technology area (CPC H)Electricity
CPC primaryH01J61/44
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to a gas discharge lamp for dielectrically impeded discharges, which gas discharge lamp is provided with a discharge vessel filled with a gas filling, which discharge vessel comprises at least a wall of a dielectric material and at least a wall having a surface which is at least partly transparent to visible radiation and coated with a phosphor layer, which phosphor layer comprises a phosphor having a host lattice, Eu2+ as the activator and a doping D selected from the group formed by Ce3+, Pr3+ and Tb3+, and provided with an electrode structure for a dielectrically impeded discharge and means for igniting and maintaining the discharge. The invention also relates to a phosphor comprising a host lattice, Eu2+ as the activator and a doping D selected from the group formed by Ce3+, Pr3+ and Tb3+.

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