METHOD FOR MANUFACTURING A CORRECTION MASK FOR AN IMAGE INTENSIFIER TUBE OF THE PROXIMITY-FOCUS TYPE HAVING AN OBLONG CATHODE AND ANODE, AND ALSO A METHOD FOR CORRECTING AN IMAGE INTENSIFIER TUBE - Patent 0494890

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EP 0 494 890 A1

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(43)	Date of publication:
	22.07.1992 Bulletin 1992/30

(21)	Application number: 90914167.0

(22)	Date of filing: 26.09.1990

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International Patent Classification (IPC):

H01J 9/ 24^{( . )}
H01J 31/ 50^{( . )}

H01J 29/ 89^{( . )}

(86)	International application number:
	PCT/EP1990/001642

(87)	International publication number:
	WO 1991/005364 (18.04.1991 Gazette 1991/09)

(84)	Designated Contracting States:
	DE FR GB IT NL

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Priority:

02.10.1989 NL 19890002443

(71)	Applicant: B.V. Optische Industrie "De Oude Delft"
	NL-2612 XE Delft (NL)

(72)	Inventor:
	VLASBLOEM, Hugo NL-3155 AB Maasland (NL)

(74)	Representative: van der Burg, Louis
	b.v. Optische Industrie De Oude Delft P.O. Box 72 NL-2600 MD Delft NL-2600 MD Delft (NL)

(54)	METHOD FOR MANUFACTURING A CORRECTION MASK FOR AN IMAGE INTENSIFIER TUBE OF THE PROXIMITY-FOCUS TYPE HAVING AN OBLONG CATHODE AND ANODE, AND ALSO A METHOD FOR CORRECTING AN IMAGE INTENSIFIER TUBE