Radiant energy – Invisible radiation responsive nonelectric signalling – Luminescent device
Patent
1986-09-22
1989-04-11
Fields, Carolyn E.
Radiant energy
Invisible radiation responsive nonelectric signalling
Luminescent device
2504871, G01J 158
Patent
active
048209260
ABSTRACT:
A radiation conversion screen having sub-layers with mutually different radiation-conversion, radiation-optical and/or technological properties wherein successive sub-layers of luminescent material have a luminescent radiation absorption which decreases in the propagation direction of the radiation beam.
REFERENCES:
patent: 3769059 (1973-10-01), Driard et al.
patent: 4039840 (1977-08-01), Shimiya et al.
patent: 4398118 (1983-08-01), Galves et al.
patent: 4437011 (1984-03-01), Noji et al.
den Boer Jacob A.
Popma Theo J. A.
Fields Carolyn E.
Haken Jack E.
Hanig Richard
U.S. Philips Corporation
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