(19)

(11)

EP 1 664 853 A2

(12)

(88) Date of publication A3: 22.09.2005 (43) Date of publication: 07.06.2006 Bulletin 2006/23 (21) Application number: 04781410.8 (22) Date of filing: 17.08.2004

(51) International Patent Classification (IPC):  G02B 1/00(1968.09) (86) International application number: PCT/US2004/026708 (87) International publication number: WO 2005/019872 (03.03.2005 Gazette 2005/09)

(84) Designated Contracting States: DE (30) Priority: 18.08.2003 US 496046 P (71) Applicant: ZYGO CORPORATION Middlefield, CT 06544-0448 (US)	(72) Inventor: EVANS, Christopher James Higganum, CT 06441 (US) (74) Representative: Cole, David John  46 Kirkhill Gardens, West Greenlees Estate Cambuslang, Glasgow G72 8EZ Cambuslang, Glasgow G72 8EZ (GB)