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1. WO2012059435 - METHOD FOR PRODUCING AN ELECTRODE FOR A HIGH-PRESSURE DISCHARGE LAMP AND HIGH-PRESSURE DISCHARGE LAMP COMPRISING AT LEAST ONE ELECTRODE THUS PRODUCED

Publication Number WO/2012/059435
Publication Date 10.05.2012
International Application No. PCT/EP2011/069030
International Filing Date 28.10.2011
IPC
H01J 61/073 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
61Gas-discharge or vapour-discharge lamps
02Details
04Electrodes; Screens; Shields
06Main electrodes
073for high-pressure discharge lamps
H01J 1/20 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
1Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
02Main electrodes
13Solid thermionic cathodes
20Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
H01J 9/04 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
9Apparatus or processes specially adapted for the manufacture of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
02Manufacture of electrodes or electrode systems
04of thermionic cathodes
CPC
H01J 1/20
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
1Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
02Main electrodes
13Solid thermionic cathodes
20Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
H01J 2201/19
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
2201Electrodes common to discharge tubes
19Thermionic cathodes
H01J 2209/02
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
2209Apparatus and processes for manufacture of discharge tubes
02Manufacture of cathodes
H01J 61/0732
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
61Gas- or vapour-discharge lamps
02Details
04Electrodes
06Main electrodes
073for high-pressure discharge lamps
0732characterised by the construction of the electrode
H01J 9/04
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
9Apparatus or processes specially adapted for the manufacture, ; installation, removal, maintenance; of electric discharge tubes, discharge lamps, or parts thereof
02Manufacture of electrodes or electrode systems
04of thermionic cathodes
H01J 9/042
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
9Apparatus or processes specially adapted for the manufacture, ; installation, removal, maintenance; of electric discharge tubes, discharge lamps, or parts thereof
02Manufacture of electrodes or electrode systems
04of thermionic cathodes
042Manufacture, activation of the emissive part
Applicants
  • OSRAM GMBH [DE]/[DE] (AllExceptUS)
  • SEITZ, Wolfgang [DE]/[DE] (UsOnly)
Inventors
  • SEITZ, Wolfgang
Common Representative
  • OSRAM GMBH
Priority Data
10 2010 043 463.905.11.2010DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) VERFAHREN ZUM HERSTELLEN EINER ELEKTRODE FÜR EINE HOCHDRUCKENTLADUNGSLAMPE UND HOCHDRUCKENTLADUNGSLAMPE MIT MINDESTENS EINER DERART HERGESTELLTEN ELEKTRODE
(EN) METHOD FOR PRODUCING AN ELECTRODE FOR A HIGH-PRESSURE DISCHARGE LAMP AND HIGH-PRESSURE DISCHARGE LAMP COMPRISING AT LEAST ONE ELECTRODE THUS PRODUCED
(FR) PROCÉDÉ DE FABRICATION D'UNE ÉLECTRODE POUR UNE LAMPE À DÉCHARGE À HAUTE PRESSION ET LAMPE À DÉCHARGE À HAUTE PRESSION COMPRENANT AU MOINS UNE ÉLECTRODE AINSI FABRIQUÉE
Abstract
(DE)
Die vorliegende Erfindung betrifft ein Verfahren zum Herstellen einer Elektrode (16) für eine Hochdruckentladungslampe (10), folgende Schritte umfassend: a) Überstreichen zumindest eines Teils der Elektrodenoberfläche zur Erzeugung einer Oxidschicht (Schritt 120), vorzugsweise mit einem Laserstrahl; b) Zumindest teilweises Sublimieren der in Schritt a) entstehenden Oxidschicht (Schritt 120); und c) Reduzieren der restlichen Oxidschicht (140). Sie betrifft überdies eine Hochdruckentladungslampe (10) mit mindestens einer derart hergestellten Elektrode.
(EN)
The invention relates to a method for producing an electrode (16) for a high-pressure discharge lamp (10), comprising the following steps: a) passing over at least a portion of the electrode surface for generating an oxide layer (step 120), preferably using a laser beam; b) at least partially sublimating the oxide layer created in step a) (step 120); and c) reducing the remaining oxide layer (140). The invention further relates to a high-pressure discharge lamp (10) comprising at least one electrode thus produced.
(FR)
La présente invention concerne un procédé de fabrication d'une électrode (16) pour une lampe à décharge à haute pression (10), ledit procédé comprenant : a) le balayage d'au moins une partie de la surface de l'électrode pour produire une couche d'oxyde (étape 120), de préférence au moyen d'un faisceau laser; b) la sublimation au moins en partie de la couche d'oxyde obtenue à l'étape a) (étape 120); et c) la réduction de la couche d'oxyde résiduelle (140). L'invention concerne en outre une lampe à décharge à haute pression (10) comprenant au moins une électrode ainsi fabriquée.
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