(19)

(11)

EP 0 801 828 A2

(12)

(43) Date of publication: 22.10.1997 Bulletin 1997/43 (21) Application number: 96933577.0 (22) Date of filing: 24.10.1996

(51) International Patent Classification (IPC):  H01J 29/ 10( . ) H01J 29/ 62( . ) H01J 31/ 10( . ) H01S 5/ 00( . ) H01J 29/ 48( . ) H01J 29/ 89( . ) H01S 3/ 0959( . ) H01S 5/ 30( . ) (86) International application number: PCT/IB1996/001145 (87) International publication number: WO 1997/017748 (15.05.1997 Gazette 1997/21)

(84) Designated Contracting States: DE FR GB (30) Priority: 08.11.1995 EP 19950203034 (71) Applicant: PHILIPS ELECTRONICS N.V. 5621 BA Eindhoven (NL)	(72) Inventors: CORNELISSEN, Hugo, John NL-5656 AA Eindhoven (NL) VAN ROSMALEN, Gerard, Eduard NL-5656 AA Eindhoven (NL) SAVERT, Cornelis, Johannes NL-5656 AA Eindhoven (NL) VRIJSSEN, Gerardus, Arnoldus, Herman, Maria NL-5656 AA Eindhoven (NL) (74) Representative: Koppen, Jan  INTERNATIONAAL OCTROOIBUREAU B.V., Prof. Holstlaan 6 5656 AA Eindhoven 5656 AA Eindhoven (NL)