(19)

(11)

EP 1 350 127 A1

(12)

(43) Date of publication: 08.10.2003 Bulletin 2003/41 (21) Application number: 01995858.6 (22) Date of filing: 21.11.2001

(51) International Patent Classification (IPC)7: G02B 6/16, F21V 8/00 (86) International application number: PCT/US0143/405 (87) International publication number: WO 0205/2314 (04.07.2002 Gazette 2002/27)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 21.12.2000 JP 2000389331 (71) Applicant: 3M Innovative Properties Company Saint Paul, MN 55133-3427 (US)	(72) Inventor: IRIE, Shinichi Yamato, Kanagawa 242-0006 (JP) (74) Representative: Hilleringmann, Jochen et al Bahnhofsvorplatz 1,Deichmannhaus 50667 Köln 50667 Köln (DE)