(19)

(11)

EP 2 616 804 A1

(12)

(43) Date of publication: 24.07.2013 Bulletin 2013/30 (21) Application number: 11763624.1 (22) Date of filing: 19.09.2011

(51) International Patent Classification (IPC):  G01N 27/62(2006.01) H01J 49/00(2006.01) (86) International application number: PCT/EP2011/066229 (87) International publication number: WO 2012/035165 (22.03.2012 Gazette 2012/12)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 17.09.2010 LU 91736 (71) Applicant: IEE International Electronics & Engineering S.A. 6468 Echternach (LU)	(72) Inventors: BOULBITCH, Alexei 54298 Igel (DE) DIEWALD, Andreas 54429 Waldweiler (DE) (74) Representative: Office Freylinger  P.O. Box 48 8001 Strassen 8001 Strassen (LU)