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(11)

EP 0 838 082 A2

(12)

(43) Date of publication: 29.04.1998 Bulletin 1998/18 (21) Application number: 97919571.0 (22) Date of filing: 07.05.1997

(51) International Patent Classification (IPC):  H01J 61/ 02( . ) H01J 61/ 30( . ) H01J 61/ 56( . ) H05B 41/ 00( . ) H01J 61/ 12( . ) H01J 61/ 34( . ) H01J 61/ 82( . ) (86) International application number: PCT/IB1997/000506 (87) International publication number: WO 1997/042651 (13.11.1997 Gazette 1997/49)

(84) Designated Contracting States: AT BE DE ES FR GB IT NL SE (30) Priority: 09.05.1996 US 19960647384 09.05.1996 US 19960647385 (71) Applicants: Philips Electronics N.V. 5621 BA Eindhoven (NL) PHILIPS NORDEN AB 164 85 Stockholm (SE)

(72) Inventors: WORK, Dale, R. NL-5656 AA Eindhoven (NL) FELLOWS, Mark NL-5656 AA Eindhoven (NL) NELSON, Gregory NL-5656 AA Eindhoven (NL) COLLINS, Kent NL-5656 AA Eindhoven (NL) KEYSER, Robertus, A., J. NL-5656 AA Eindhoven (NL) JACKSON, Andrew NL-5656 AA Eindhoven (NL) DEURLOO, Oscar, J. NL-5656 AA Eindhoven (NL) LINDEN, Aswin, J., G. NL-5656 AA Eindhoven (NL) SEINEN, Peter, A. NL-5656 AA Eindhoven (NL) VAN DEN HOEK, Willem, J. NL-5656 AA Eindhoven (NL) VAN ESVELD, Hendrik, A. NL-5656 AA Eindhoven (NL) HENDRICX, Josephus, C., M. NL-5656 AA Eindhoven (NL) (74) Representative: Dusseldorp, Jan Charles, et al  INTERNATIONAAL OCTROOIBUREAU B.V., Prof. Holstlaan 6 5656 AA Eindhoven 5656 AA Eindhoven (NL)