(19)

(11)

EP 2 176 890 A2

(12)

(88) Date of publication A3: 26.02.2009 (43) Date of publication: 21.04.2010 Bulletin 2010/16 (21) Application number: 08776346.2 (22) Date of filing: 10.07.2008

(51) International Patent Classification (IPC):  H01L 31/052(2006.01) G02B 5/10(2006.01) F24J 2/10(2006.01) (86) International application number: PCT/IB2008/001804 (87) International publication number: WO 2009/007832 (15.01.2009 Gazette 2009/03)

(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 Designated Extension States: AL BA MK RS (30) Priority: 11.07.2007 IT BO20070471 (71) Applicant: CPower S.r.l. Ferrara (IT)	(72) Inventors: ANTONINI, Andrea I-48011 Alfonsine (IT) DI BENEDETTO, Pierangelo I-90128 Palermo (IT) UDERZO, Davide I-36075 Montecchio Maggiore (IT) ARMANI, Maurizio I-39010 Avelengo (IT) PARRETTA, Antonio I-44100 Ferrara (IT) (74) Representative: Jorio, Paolo et al Studio Torta S.r.l. Via Viotti 9 10121 Torino 10121 Torino (IT)