(19)

(11)

EP 1 119 794 A1

(12)

(43) Date of publication: 01.08.2001 Bulletin 2001/31 (21) Application number: 99941008.7 (22) Date of filing: 10.08.1999

(51) International Patent Classification (IPC)7: G02C 7/10 (86) International application number: PCT/US9918/084 (87) International publication number: WO 0014/594 (16.03.2000 Gazette 2000/11)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 09.09.1998 US 99534 P (71) Applicant: CORNING INCORPORATED Corning, N.Y. 14831 (US)	(72) Inventors: HAVENS, Thomas, G. Painted Post, NY 14870 (US) KERKO, David, J. Corning, NY 14830 (US) WEDDING, Brent, M. Corning, NY 14830 (US) (74) Representative: Marchant, James Ian et al Elkington and Fife,Prospect House,8 Pembroke Road Sevenoaks,Kent TN13 1XR Sevenoaks,Kent TN13 1XR (GB)