(19)

(11)

EP 2 193 537 A1

(12)

(43) Date of publication: 09.06.2010 Bulletin 2010/23 (21) Application number: 08832706.9 (22) Date of filing: 17.09.2008

(51) International Patent Classification (IPC):  H01J 17/28(2006.01) H01J 23/00(2006.01) H01J 19/36(2006.01) H01J 23/033(2006.01) (86) International application number: PCT/US2008/076580 (87) International publication number: WO 2009/039128 (26.03.2009 Gazette 2009/13)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA MK RS (30) Priority: 17.09.2007 US 972960 P 15.09.2008 US 210274 (71) Applicant: Raytheon Company Waltham, MA 02451-1449 (US)	(72) Inventor: WEBER, Richard, M. Prosper, TX 78078 (US) (74) Representative: Lawrence, John  Barker Brettell LLP 138 Hagley Road Edgbaston Birmingham B16 9PW Edgbaston Birmingham B16 9PW (GB)