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(11)

EP 2 678 634 A1

(12)

(43) Date of publication: 01.01.2014 Bulletin 2014/01 (21) Application number: 11706450.1 (22) Date of filing: 24.02.2011

(51) International Patent Classification (IPC):  G01B 11/06(2006.01) G01B 11/245(2006.01) G01B 21/04(2006.01) (86) International application number: PCT/US2011/025979 (87) International publication number: WO 2012/115643 (30.08.2012 Gazette 2012/35)

(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 (71) Applicant: Corning Incorporated Corning, New York 14831 (US)	(72) Inventor: MOLL, Johannes Corning, New York 14830 (US) (74) Representative: Greene, Simon Kenneth  Elkington and Fife LLP Prospect House 8 Pembroke Road Sevenoaks Kent TN13 1XR Sevenoaks Kent TN13 1XR (GB)