Radiant energy – Automatic/serial detection of similar sources
Patent
1991-12-31
1993-08-03
Dunn, Drew A.
Radiant energy
Automatic/serial detection of similar sources
378155, 378146, G01N 2304
Patent
active
052331938
ABSTRACT:
A radiation image recording apparatus comprises a source of radiation and a radiation image recording medium located facing the radiation source. A first slit plate is composed of a radiation absorber and at least two parallel slits, through which the radiation passes. The first slit plate is located between the radiation source and an object, which object is placed between the radiation source and the radiation image recording medium. A second slit plate is composed of a radiation absorber and at least two parallel slits, through which the radiation passes. The second slit plate is located between the object and the radiation image recording medium such that the slits of the second slit plate may be parallel to the slits of the first slit plate. A drive device synchronously moves the first slit plate and the second slit plate in the direction, along which the slits stand side by side with each other, such that a plane, which passes through one of the slits of the first slit plate and one of the slits of the second slit plate, may pass through the radiation source. At least either one of the first slit plate and the second slit plate has a cross-sectional shape such that the thicknesses of walls, which extend on both sides of each slit and define each slit, may become progressively smaller towards each slit.
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patent: 4258264 (1981-03-01), Kotera et al.
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patent: 5065022 (1991-11-01), Horikawa
Dunn Drew A.
Fuji Photo Film Co. , Ltd.
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