(19)

(11)

EP 1 583 991 A1

(12)

(43) Date of publication: 12.10.2005 Bulletin 2005/41 (21) Application number: 04702519.2 (22) Date of filing: 15.01.2004

(51) International Patent Classification (IPC)7: G02B 7/00, G02B 5/30, G02B 5/02 (86) International application number: PCT/US2004/000976 (87) International publication number: WO 2004/068207 (12.08.2004 Gazette 2004/33)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR Designated Extension States: AL LT LV MK (30) Priority: 17.01.2003 JP 2003009775 (71) Applicant: 3M Innovative Properties Company St. Paul, MN 55133-3427 (US)	(72) Inventor: KIDA, Akira 229-1185 Sagamihara,Kanagawa (JP) (74) Representative: Vossius & Partner  Siebertstrasse 4 81675 München 81675 München (DE)