Radiant energy – Inspection of solids or liquids by charged particles – Analyte supports
Patent
1976-05-10
1978-06-20
Anderson, Bruce C.
Radiant energy
Inspection of solids or liquids by charged particles
Analyte supports
250505, G01N 2300
Patent
active
040963896
ABSTRACT:
A collimator is disclosed for minimizing radiation exposure and improving resolution in radiation imaging devices. The collimator provides a penetrating beam of radiation from a source thereof, which beam is substantially non-diverging in at least one direction. In the preferred embodiment, the collimator comprises an elongated sandwich assembly of a plurality of layers of material exhibiting relatively high radiation attenuation characteristics, which attenuating layers are spaced apart and separated from one another by interleaved layers of material exhibiting relatively low radiation attenuation characteristics. The sandwich assembly is adapted for lengthwise disposition and orientation between a radiation source and a target or receiver such that the attenuating layers are parallel to the desired direction of the beam with the interleaved spacing layers providing direct paths for the radiation.
REFERENCES:
patent: 1551162 (1925-08-01), Loebell
patent: 2760077 (1956-08-01), Longini
patent: 3013157 (1961-12-01), Norton
patent: 3778614 (1973-12-01), Hounsfield
patent: 3814938 (1974-06-01), Martone et al.
Ashe John B.
Sypal Kenneth L.
Williams Gwilym H.
Anderson Bruce C.
G. D. Searle & Co.
Kraft Dennis O.
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