(19)

(11)

EP 1 781 985 A1

(12)

(43) Date of publication: 09.05.2007 Bulletin 2007/19 (21) Application number: 05725629.9 (22) Date of filing: 14.03.2005

(51) International Patent Classification (IPC):  F21V 8/00(2006.01) G02B 6/42(2006.01) (86) International application number: PCT/US2005/008586 (87) International publication number: WO 2005/106322 (10.11.2005 Gazette 2005/45)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR (30) Priority: 16.04.2004 EP 04076122 (71) Applicant: 3M Innovative Properties Company St. Paul, MN 55133-3427 (US)	(72) Inventor: PESENTI, Marcella, M. I-20090 Segrate (IT) (74) Representative: Hill, Cecilia Ann  3M Europe, Hermeslaan 7 1831 Diegem 1831 Diegem (BE)