Grating and radiation imaging device
First Claim
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1. A grating, comprising:
- a plurality of stacked grating elements, wherein the grating elements are stacked to form a grid;
the grating element comprises a first sheet and a second sheet having two parallel planes;
the second sheet is stacked at the first sheet in a length direction of the first sheet;
the second sheet has a length smaller than that of the first sheet, and there are at least two second sheets; and
the second sheets are stacked at two ends on an identified surface of the first sheet in the length direction of the first sheet, such that a uniform grating slit is formed between adjacent first sheets, and the thickness of the second sheet determines a width of the grating slit.
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Abstract
The disclosure relates to a grating and a radiation imaging device. The grating comprises a plurality of stacked grating elements. The grating elements are stacked to form a grid. The grating element comprises a first sheet and a second sheet having two parallel planes. The second sheet is stacked at the first sheet in a length direction of the first sheet. The first sheet is almost impervious to radiation. The present disclosure stacks the sheets having different specifications together to form the grating with uniform grating slits, such that there is no limitation on the thickness of the grating and the grating can be used along with high-energy radiations.
8 Citations
11 Claims
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1. A grating, comprising:
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a plurality of stacked grating elements, wherein the grating elements are stacked to form a grid; the grating element comprises a first sheet and a second sheet having two parallel planes; the second sheet is stacked at the first sheet in a length direction of the first sheet; the second sheet has a length smaller than that of the first sheet, and there are at least two second sheets; and the second sheets are stacked at two ends on an identified surface of the first sheet in the length direction of the first sheet, such that a uniform grating slit is formed between adjacent first sheets, and the thickness of the second sheet determines a width of the grating slit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A radiation imaging device, comprising a grating comprising a plurality of stacked grating elements, wherein the grating elements are stacked to form a grid;
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the grating element comprises a first sheet and a second sheet having two parallel planes; the second sheet is stacked at the first sheet in a length direction of the first sheet; and the second sheet has a length smaller than that of the first sheet, and there are at least two second sheets; and the second sheets are stacked at two ends on an identified surface of the first sheet in the length direction of the first sheet, such that a uniform grating slit is formed between adjacent first sheets, and the thickness of the second sheet determines a width of the grating slit. - View Dependent Claims (11)
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Specification
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Current AssigneeNuctech Company Limited (Tsinghua Tongfang Co., Ltd.), Tsinghua University
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Original AssigneeNuctech Company Limited (Tsinghua Tongfang Co., Ltd.)
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InventorsZhang, Li, Hong, Mingzhi, Huang, Qingping, Shen, Le
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Primary Examiner(s)Chang, Audrey Y
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Application NumberUS15/802,473Publication NumberTime in Patent Office914 DaysField of Search378 62, 378 35, 378 98, 378154, 378155, 2505151US Class CurrentCPC Class CodesG02B 5/1838 for use with ultraviolet ra...G21K 1/025 using multiple collimators,...G21K 1/06 using diffraction, refracti...G21K 2201/067 Construction detailsG21K 2207/005 Methods and devices obtaini...
