Patent US5831269A successfully refreshed from Google Patents.
US5831269A
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Radiation detector element
Assignee: Proterial Ltd
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Filing: 1996-11-26
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Granted: 1998-11-03
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Expires: 2016-11-26
Abstract
Abstract A radiation detector element which comprises a scintillator laminate for converting X-ray energy incident on said radiation detector to visible light, the scintillator laminate comprising a ceramic scintillator layer and a single crystal scintillator layer and a photodetector for converting the visible light from the scintillator laminate to electrical signals. The single crystal scintillator is interposed in the path of the light scintillations from the ceramic scintillator to the photodetector.
Inventors
- 👤 Ryouhei Nakamura
- 👤 Nobuyuki Yamada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:25
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/16; G01T1/20; G01T1/2018; G01T1/20185; G01T1/2008; G01T1/20183
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
110 words
A radiation detector comprising an array of radiation detecting elements on a substrate, said radiation detecting elements each comprising: a scintillator laminate for converting X-ray energy incident thereon to visible light and transmitting said visible light, said scintillator laminate comprising a ceramic scintillator layer and a single crystal scintillator layer; and a photodetector for converting said visible light from said scintillator laminate to electrical signals; said ceramic scintillator layer and said single crystal scintillator layer being disposed serially on said photodetector along a path of incident X-ray so that said ceramic scintillator layer is positioned upstream in said path of incident X-ray with respect to said single crystal scintillator layer.
Claim 2
Dependent Claim
110 words
A radiation detector comprising an array of radiation detecting elements on a substrate, said radiation detecting elements each comprising: a scintillator laminate for converting X-ray energy incident thereon to visible light and transmitting said visible light, said scintillator laminate comprising a ceramic scintillator layer and a single crystal scintillator layer; and a photodetector for converting said visible light from said scintillator laminate to electrical signals; said ceramic scintillator layer and said single crystal scintillator layer being disposed serially on said photodetector along a path of incident X-ray so that said ceramic scintillator layer is positioned upstream in said path of incident X-ray with respect to said single crystal scintillator layer.
Claim 3
Dependent Claim
36 words
The radiation detector according to claim 1, wherein said ceramic scintillator layer comprises at least one scintillation material selected from the group consisting of Gd 2 O 2 S:Re wherein Re is Pr, Eu or Tb.
Claim 4
Dependent Claim
38 words
The radiation detector according to claim 1, wherein said ceramic scintillator layer comprises at least one scintillation material selected from the group consisting of (Y, Gd) 2 O 3 :Eu and Gd 3 Ga 5 O 12 :Cr.
Claim 5
Dependent Claim
35 words
The radiation detector according to claim 1, wherein said single crystal scintillator layer comprises at least one scintillation material selected from the group consisting of CdWO 4 and Bi 6 Ge 4 O 12 .
Claim 6
Dependent Claim
35 words
The radiation detector according to claim 1, wherein a ratio of the thickness of said single crystal scintillator layer to the thickness of said ceramic scintillator layer along said path of incident X-ray is 0.2-10.
Claim 7
Dependent Claim
17 words
The radiation detector according to claim 1, wherein a reflective plate is disposed between adjacent scintillator laminates.
Claim 8
Dependent Claim
97 words
A radiation detector comprising an array of radiation detecting elements on a substrate, said radiation detecting elements each comprising: a scintillator laminate for converting X-ray energy incident thereon to visible light and transmitting said visible light, said scintillator laminate comprising a ceramic scintillator layer and a single crystal scintillator layer; and a photodetector for converting said visible light from said scintillator laminate to electrical signals; said scintillator laminate being disposed on said photodetector so that said ceramic scintillator layer and said single crystal scintillator layer are positioned in parallel to each other along a-path of incident X-ray.
Claim 9
Dependent Claim
97 words
A radiation detector comprising an array of radiation detecting elements on a substrate, said radiation detecting elements each comprising: a scintillator laminate for converting X-ray energy incident thereon to visible light and transmitting said visible light, said scintillator laminate comprising a ceramic scintillator layer and a single crystal scintillator layer; and a photodetector for converting said visible light from said scintillator laminate to electrical signals; said scintillator laminate being disposed on said photodetector so that said ceramic scintillator layer and said single crystal scintillator layer are positioned in parallel to each other along a-path of incident X-ray.
Claim 10
Dependent Claim
36 words
The radiation detector according to claim 7, wherein said ceramic scintillator layer comprises at least one scintillation material selected from the group consisting of Gd 2 O 2 S:Re wherein Re is Pr, Eu or Tb.
Claim 11
Dependent Claim
38 words
The radiation detector according to claim 7, wherein said ceramic scintillator layer comprises at least one scintillation material selected from the group consisting of (Y, Gd) 2 O 3 :Eu and Gd 3 Ga 5 O 12 :Cr.
Claim 12
Dependent Claim
35 words
The radiation detector according to claim 7, wherein said single crystal scintillator layer comprises at least one scintillation material selected from the group consisting of CdWO 4 and Bi 6 Ge 4 O 12 .
Claim 13
Dependent Claim
33 words
The radiation detector according to claim 7, wherein a ratio of the width of said single crystal scintillator layer to the width of said ceramic scintillator layer along the laminating direction is 0.1-2.0.
Claim 14
Dependent Claim
17 words
The radiation detector according to claim 7, wherein a reflective plate is disposed between adjacent scintillator laminates.
References Cited (Backward Citations)
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