(19)

(11)

EP 1 285 289 A2

(12)

(88) Date of publication A3: 11.04.2002 (43) Date of publication: 26.02.2003 Bulletin 2003/09 (21) Application number: 01934952.1 (22) Date of filing: 30.04.2001

(51) International Patent Classification (IPC)7: G02B 5/32, G03H 1/02 (86) International application number: PCT/US0113/902 (87) International publication number: WO 0108/8575 (22.11.2001 Gazette 2001/47)

(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: 16.05.2000 US 571180 (71) Applicant: 3M Innovative Properties Company Saint Paul, MN 55133-3427 (US)	(72) Inventors: FORESYTH, David Saint Paul, MN 55133-3427 (US) NAGARKAR, Pradnya, V. Saint Paul, MN 55133-3427 (US) RALLI, Philip Saint Paul, MN 55133-3427 (US) SILVER, Robert Saint Paul, MN 55133-3427 (US) SMYTH, William, K. Saint Paul, MN 55133-3427 (US) (74) Representative: VOSSIUS & PARTNER  Siebertstrasse 4 81675 München 81675 München (DE)