(19)

(11)

EP 1 038 200 A1

(12)

(43) Date of publication: 27.09.2000 Bulletin 2000/39 (21) Application number: 98960872.4 (22) Date of filing: 09.12.1998

(51) International Patent Classification (IPC)7: G02B 27/22, G02B 27/42 (86) International application number: PCT/AU9801/014 (87) International publication number: WO 9930/200 (17.06.1999 Gazette 1999/24)

(84) Designated Contracting States: DE FR GB (30) Priority: 09.12.1997 AU PP081797 (71) Applicant: COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATION Campbell,ACT 2612 (AU)	(72) Inventor: YANG, Xiaoping Endeavour Hills, VIC 3802 (AU) (74) Representative: Hoarton, Lloyd Douglas Charles  Forrester & Boehmert,Franz-Joseph-Strasse 38 80801 München 80801 München (DE)