X-ray image intensifier tube

Details X-ray image intensifier tube X-ray image intensifier tube

H - Electricity

05

G

358/11

H05G 1/00 (2006.01) H01J 29/00 (2006.01) H01J 29/86 (2006.01) H05G 1/64 (2006.01)

Patent

CA 1114525

ABSTRACT : An image-forming device, comprising an image intensifier tube, includes a screening grid with ferromagnetic material which is arranged near the entrance window of the image intensifier tube for the purpose of screening against disturbing mag- netic fields. Due to the use of partly radiation ab- sorbing material and partly ferromagnetic material this screening grid can replace, a stray radiation grid already present in the device, or can be added as a grid with radiation transmitting material and ferromagnetic material without the image formation being disturbed in any way. - 14 -

299440

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