Magnetic shielding for an X-ray image intensifier tube

Details Magnetic shielding for an X-ray image intensifier tube Magnetic shielding for an X-ray image intensifier tube

1978-03-03

1980-09-02

Chatmon, Jr., Saxfield

Electric lamp and discharge devices

With support and/or spacing structure for electrode and/or...

For shield

250213VT, 313242, 313102, 315 8, 315 85, H01J 153

Patent

active

042208904

ABSTRACT:
An image-forming device, comprising an image intensifier tube, includes a magnetic shielding grid comprising a ferromagnetic material, which is arranged near the entrance screen of the image intensifier tube for the purpose of shielding against disturbing magnetic fields. Due to the use of partly radiation absorbing material and partly ferromagnetic material this shielding 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.

REFERENCES:
patent: 2727173 (1955-12-01), Longini et al.
patent: 3119037 (1964-01-01), Stanley
patent: 3331979 (1967-07-01), Sybeldon et al.
patent: 3377504 (1968-04-01), Rebicek
patent: 3688146 (1972-08-01), Bouwers
patent: 3858050 (1974-12-01), Carlson
patent: 3889144 (1975-06-01), McGee
patent: 4000432 (1976-12-01), Coon et al.

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