Radiographic intensifying screens

Details Radiographic intensifying screens Radiographic intensifying screens

1977-03-08

1979-04-10

Dixon, Harold A.

Radiant energy

Invisible radiation responsive nonelectric signalling

Luminescent device

250483, G01J 158

Patent

active

041490835

ABSTRACT:
An X-ray image intensifying screen comprising (1) a layer (which may be a supported layer or a self-supporting layer) containing fluorescent light-emitting phosphor particles including one or more rare-earth metal compounds and (2) a light-diffusing layer or sheet, which contains numerous discrete light-scattering volumes of a substance or substances distributed at random in a binder medium or partially embedded therein, such volumes having a mean size not larger than 20 .mu.m, said layer or sheet being located so that fluorescent light of said phosphor particles can penetrate therethrough to the outside of said screen.

REFERENCES:
patent: 2144040 (1939-01-01), Wurstlin
patent: 3872309 (1975-03-01), DeBelder et al.
patent: 3936644 (1976-02-01), Rabatin
patent: 4028550 (1977-06-01), Weiss et al.

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