(19)

(11)

EP 2 132 596 A1

(12)

(43) Date of publication: 16.12.2009 Bulletin 2009/51 (21) Application number: 08717931.3 (22) Date of filing: 18.03.2008

(51) International Patent Classification (IPC):  G03B 21/56(2006.01) (86) International application number: PCT/EP2008/053198 (87) International publication number: WO 2008/122488 (16.10.2008 Gazette 2008/42)

(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 (30) Priority: 05.04.2007 IT MI20070704 (71) Applicant: Isofilm S.r.l. 24126 Bergamo (IT)	(72) Inventor: DRAGHI, Giacomo I-24128 Bergamo (IT) (74) Representative: Modiano, Micaela Nadia  Dr. Modiano & Associati SpA Via Meravigli 16 20123 Milano 20123 Milano (IT)