Global Patent Index - EP 2022298 A1

EP 2022298 A1 2009-02-11 - METHODS AND SYSTEMS FOR CONTROLLING GAS DISCHARGE LAMPS

Title (en)

METHODS AND SYSTEMS FOR CONTROLLING GAS DISCHARGE LAMPS

Title (de)

VERFAHREN UND SYSTEME ZUM STEUERN VON GASENTLADUNGSLAMPEN

Title (fr)

PROCEDES ET SYSTEMES POUR COMMANDER DES LAMPES A DECHARGE

Publication

EP 2022298 A1 (EN)

Application

EP 07724784 A

Priority

  • EP 2007003858 W
  • GB 0608568 A

Abstract (en)

[origin: GB2437755A] The present invention relates to a control system (100) for controlling a gas discharge system (10), the lamp control system (100) comprising a detection means (102) for detecting a physical parameter such as e.g. an optical parameter from said gas discharge lamp (10), an evaluation means (104) for spectrally evaluating variations in said optical parameter. The control system may also comprise a controlling means (106) for controlling an operating frequency of said gas discharge system (10) based on said evaluated physical parameter. The system typically is adapted for reducing arc instabilities in a gas discharge lamp, although other gas discharge systems may be adapted as well. The invention also relates to a corresponding optical system, and to a method for controlling a gas discharge system, such as e.g. a gas discharge lamp.

IPC 8 full level (invention and additional information)

H05B 41/292 (2006.01)

CPC (invention and additional information)

H05B 41/2928 (2013.01)

Citation (search report)

See references of WO 2007128472A1

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA HR MK RS

EPO simple patent family

GB 0608568 D0 20060607; GB 2437755 A 20071107; EP 2022298 A1 20090211; WO 2007128472 A1 20071115

INPADOC legal status


2012-06-20 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20111201

2009-02-11 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20081202

2009-02-11 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

2009-02-11 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Countries: AL BA HR MK RS