The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 29, 2003
Filed:
Apr. 25, 2002
Claus Feldmann, Aachen, DE;
Maya Angelova Doytcheva, Aachen, DE;
Cornelis Reinder Ronda, Aachen, DE;
Thomas Jüstel, Aachen, DE;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
A gas discharge lamp fitted with a gas discharge vessel filled with a gas filling is suitable for a gas discharge which emits VUV radiation, with a luminophore coating containing a down conversion luminophore and with means for igniting and maintaining a gas discharge in which the down conversion luminophore has in a host lattice a pair of activators of the a first lanthanoid ion and a second lanthanoid ion and a sensitizer selected from the group of the copper (I) ion, silver (I) ion, gold (I) ion, zinc (II) ion, gallium (III) ion, indium (III) ion, thallium (III) ion, germanium (IV) ion, tin (IV) ion and lead (IV) ion, is environmentally friendly and has a high lamp efficiency &eegr; . The invention also concerns a down conversion luminophore which in a host lattice has a pair of activators of a first lanthanoid ion and a second lanthanoid ion and a sensitizer selected from the group of the copper (I) ion, silver (I) ion, gold (I) ion, zinc (II) ion, gallium (III) ion, indium (III) ion, thallium (III) ion, germanium (IV) ion, tin (IV) ion and lead (IV) ion.