(19)

(11)

EP 0 950 200 A1

(12)

(43) Date of publication: 20.10.1999 Bulletin 1999/42 (21) Application number: 98950241.0 (22) Date of filing: 02.11.1998

(51) International Patent Classification (IPC):  G02B 1/ 04( . ) B29D 11/ 00( . ) G02B 3/ 00( . ) G02B 27/ 10( . ) B29C 33/ 42( . ) B32B 3/ 30( . ) G02B 3/ 04( . ) (86) International application number: PCT/IB1998/001753 (87) International publication number: WO 1999/023513 (14.05.1999 Gazette 1999/19)

(84) Designated Contracting States: CH DE FR GB GR IT LI PT (30) Priority: 05.11.1997 EP 19970203425 (71) Applicant: Koninklijke Philips Electronics N.V. 5621 BA Eindhoven (NL)	(72) Inventors: DONA, Marinus, J.J. NL-5656 AA Eindhoven (NL) VISSER, Derk NL-5656 AA Eindhoven (NL) (74) Representative: Visser, Derk  INTERNATIONAAL OCTROOIBUREAU B.V., Prof. Holstlaan 6 5656 AA Eindhoven 5656 AA Eindhoven (NL)