A radio frequency interference shield

(19)

(11)

EP 0 758 141 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	12.03.1997 Bulletin 1997/11

(43)	Date of publication A2:
	12.02.1997 Bulletin 1997/07

(21)	Application number: 96305311.1

(22)	Date of filing: 19.07.1996

(51)	International Patent Classification (IPC)⁶: H01J 61/00

(84)	Designated Contracting States:
	DE FR GB NL

(30)

Priority:

05.08.1995 GB 9516092

(71)	Applicant: CENTRAL RESEARCH LABORATORIES LIMITED
	Hayes, Middlesex, UB3 1HH (GB)

(72)	Inventors:
	Allen, Philip Charles Feltham, Middlesex TW13 4PY (GB) Barnes, Andrew David Near Camberley, Hampshire GU17 9EB (GB) Gibb, Ian Gordon Ruislip, Middlesex HA4 6DF (GB) Coe, Steven Edward Woking, Surrey GU21 1NR (GB)

(74)	Representative: Lupton, Frederick et al
	THORN EMI Patents Limited, Central Research Laboratories, Dawley Road Hayes, Middlesex UB3 1HH Hayes, Middlesex UB3 1HH (GB)

(54)	A radio frequency interference shield

(57) A radio frequency interference (RFI) shield comprises an electrically conductive baffle which is kept at ground potential in operation. The baffle comprises either a plurality of substantially parallel V-shaped elongate members having a phosphor coated surface, or a phosphor coated mesh. The apparatus directs light emanating from the phosphor coated surface through the baffle thereby increasing the efficiency of the system.

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