X-ray imager with lens array and transparent non-structured scintillator
First Claim
Patent Images
1. An x-ray imager, comprising:
- a scintillator layer configured to generate light from x-rays, wherein the scintillator layer is transparent, and made from a scintillator that is non-structured and non-pixellated;
a detector array comprising a plurality of photosensitive elements configured to detect light generated in the scintillator layer; and
a lens array, wherein the lens array comprises a plurality of lenses, each being configured to collect light and focus the collected light to only one of the plurality of photosensitive elements.
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Abstract
An x-ray imager includes a scintillator layer configured to generate light from x-rays, a detector array configured to detect light generated in the scintillator layer, and a lens array situated between the scintillator layer and the detector array. The lens array may be configured to collect light and focus the collected light to the detector array.
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Citations
29 Claims
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1. An x-ray imager, comprising:
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a scintillator layer configured to generate light from x-rays, wherein the scintillator layer is transparent, and made from a scintillator that is non-structured and non-pixellated; a detector array comprising a plurality of photosensitive elements configured to detect light generated in the scintillator layer; and a lens array, wherein the lens array comprises a plurality of lenses, each being configured to collect light and focus the collected light to only one of the plurality of photosensitive elements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An x-ray imager, comprising:
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a scintillator layer configured to generate light from x-rays; and a detector array comprising a plurality of photosensitive elements configured to detect light generated in the scintillator layer;
wherein;the scintillator layer is transparent, and made from a scintillator that is non-structured and non-pixellated; and the scintillator layer has a first surface proximal to the detector array, the first surface of the scintillator layer is curved in a plurality of portions each portion having a curved surface facing toward one of the plurality of photosensitive elements and a focal length configured to collect light and focus the collect light to the one of the plurality of photosensitive elements. - View Dependent Claims (19, 20)
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21. An x-ray imager, comprising:
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a scintillator layer configured to generate light from x-rays, wherein the scintillator layer is transparent, and made from a scintillator that is non-structured and non-pixellated; a detector array configured to detect light generated in the scintillator layer, wherein the detector array comprises a plurality of groups of photosensitive elements, each group comprising at least a first photosensitive element and a second photosensitive element; and a lens array situated between the scintillator layer and the detector array, wherein the lens array comprises a plurality of lenses, each lens covering one of the plurality of groups of photosensitive elements, wherein the first photosensitive element in each group has a first optical path through the scintillator through the lens covering the group, and the second photosensitive element in each group has a second optical path through the scintillator through the lens covering the group; and optical paths of the plurality of first photosensitive elements in the plurality of groups converge in a first plane in the scintillator layer, and optical paths of the plurality of second photosensitive elements in the plurality of groups converge in a second plane in the scintillator layer. - View Dependent Claims (22, 23, 24)
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25. A method of acquiring x-ray images, comprising:
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receiving x-rays having an energy spectrum including a first energy portion and a second energy portion by an x-ray imager comprising a scintillator layer, a lens array and a detector array, thereby light is generated in the scintillator in a first plane and in a second plane, wherein the detector array comprises a plurality of groups of photosensitive elements, each group comprising at least a first photosensitive element and a second photosensitive element; and
the lens array comprises a plurality of lenses each lens covering one of the plurality of groups of photosensitive elements;the first photosensitive element in each group has a first optical path through the scintillator through the lens covering the group, the second photosensitive element in each group has a second optical path through the scintillator through the lens covering the group, and optical paths of the plurality of first photosensitive elements in the plurality of groups converge in a first plane in the scintillator layer, and optical paths of the plurality of second photosensitive elements in the plurality of groups converge in a second plane in the scintillator layer; collecting image signals using the detector array; constructing a first image pixel using data from the plurality of first photosensitive elements of the plurality of groups. - View Dependent Claims (26, 27, 28, 29)
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Specification