Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1992-10-27
1994-04-19
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
25037009, H01J 4014
Patent
active
053047923
ABSTRACT:
In an X-ray image intensifier tube, a casing for the protection from x-radiation from the X-ray image intensifier tube. The casing according to the present invention comprises a jacket of a thermoplastic material charged with a powder of a material that absorbs the x-radiation and a shielding from outside magnetic fields. The shielding is in contact with the jacket. The screen that absorbs the x radiation thus is at least partially formed of the jacket.
REFERENCES:
patent: 4171480 (1979-10-01), Wulms
patent: 5177350 (1993-01-01), Beauvais et al.
Patent Abstracts of Japan vol. 13, No. 125(P-847) Mar. 28, 1989 & JP-A-63 293 500 (Mitsubishi Cable Ind. Ltd.) Nov. 30, 1988.
Cozzi Serge
Verat Maurice
Nelms David C.
Shami K.
Thomson Tubes Electroniques
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