(19)

(11)

EP 1 428 054 A2

(12)

(88) Date of publication A3: 08.01.2004 (43) Date of publication: 16.06.2004 Bulletin 2004/25 (21) Application number: 02755358.5 (22) Date of filing: 12.09.2002

(51) International Patent Classification (IPC)7: G02B 6/42 (86) International application number: PCT/GB2002/004152 (87) International publication number: WO 2003/025649 (27.03.2003 Gazette 2003/13)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 17.09.2001 GB 0122426 (71) Applicant: Denselight Semiconductors Pte Ltd. Singapore 498831 (SG)	(72) Inventors: LAM, Yee, Loy,Denselight Semiconductors Pte Ltd. Singapore 498 831 (SG) TEO, Kian H.V.,Denselight Semiconductors Pte Ltd. Singapore 498 831 (SG) (74) Representative: Finnie, Peter John et al Gill Jennings & Every,Broadgate House,7 Eldon Street London EC2M 7LH London EC2M 7LH (GB)