(19)

(11)

EP 1 110 116 A1

(12)

(43) Date of publication: 27.06.2001 Bulletin 2001/26 (21) Application number: 99919833.6 (22) Date of filing: 13.04.1999

(51) International Patent Classification (IPC)7: G02B 7/182, G02B 5/08, G02B 27/00 (86) International application number: PCT/US9908/152 (87) International publication number: WO 0062/111 (19.10.2000 Gazette 2000/42)

(84) Designated Contracting States: DE ES FR GB SE (30) Priority: 13.04.1998 US 81548 P (71) Applicant: LDI, Inc. Grand Rapids, MI 49512 (US)	(72) Inventor: LOHSS, Kurt, L. Pentwater, MI 49449 (US) (74) Representative: West, Alan Harry et al R.G.C. Jenkins & Co.26 Caxton Street London SW1H 0RJ London SW1H 0RJ (GB)