Patent · US Expired

Gas discharge lamp comprising a phosphor layer

US6504320B2 · kind B2 · utility

4Cited by

3References

4Claims

0Family size

Assignee

KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

Claus Feldmann · Aachen, DE
Thomas Juestel · Aachen, DE
Cornelis Reinder Ronda · Aachen, DE
Hans-Otto Jungk · Eschweiler, DE
Jacqueline Merikhi · Aachen, DE

Key dates

Filing date	May 25, 2001
Grant date	Jan 7, 2003
Priority date	—
Expiry date	May 25, 2021

Classification

Technology area (CPC H)Electricity
CPC primaryH01J61/46
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

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 preparation of a phosphor powder and a coating, which coating comprises a compound selected from the group formed by the fluorides and orthophosphates of the elements magnesium, calcium, barium, aluminum, scandium, yttrium and lanthanum, and provided with an electrode structure for a dielectrically impeded discharge, and with means for igniting and maintaining the dielectrically impeded discharge.

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