(19)

(11)

EP 2 748 663 A1

(12)

(43) Date of publication: 02.07.2014 Bulletin 2014/27 (21) Application number: 12772897.0 (22) Date of filing: 26.09.2012

(51) International Patent Classification (IPC):  G02B 6/42(2006.01) G02B 6/43(2006.01) (86) International application number: PCT/EP2012/068970 (87) International publication number: WO 2013/045498 (04.04.2013 Gazette 2013/14)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 28.09.2011 WO PCT/IB2011/002708 (71) Applicant: FCI 78280 Guyancourt (FR)	(72) Inventor: YABRE, Gnitabouré F-28300 Mainvilliers (FR) (74) Representative: De Vries & Metman  Overschiestraat 180 1062 XK Amsterdam 1062 XK Amsterdam (NL)