(19)

(11)

EP 2 548 066 A1

(12)

(43) Date of publication: 23.01.2013 Bulletin 2013/04 (21) Application number: 11756979.8 (22) Date of filing: 17.03.2011

(51) International Patent Classification (IPC):  G02B 6/38(2006.01) (86) International application number: PCT/US2011/028778 (87) International publication number: WO 2011/116166 (22.09.2011 Gazette 2011/38)

(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: 19.03.2010 US 315419 P 19.03.2010 US 315425 P (71) Applicant: Corning Incorporated Corning, New York 14831 (US)	(72) Inventors: ISENHOUR, Micah C Lincolnton North Carolina 28092 (US) KNECHT, Dennis M Hickory North Carolina 28601 (US) LUTHER, James P Hickory North Carolina 28602 (US) (74) Representative: Sturm, Christoph  Quermann Sturm Weilnau Patentanwälte Unter den Eichen 7 65195 Wiesbaden 65195 Wiesbaden (DE)