최소 단어 이상 선택하여야 합니다.
최대 10 단어까지만 선택 가능합니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
DataON 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Edison 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0094603 (2013-12-02) |
등록번호 | US-9048061 (2015-06-02) |
우선권정보 | GB-0525593.0 (2005-12-16); GB-0904236.7 (2009-03-12) |
발명자 / 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 | 피인용 횟수 : 0 인용 특허 : 484 |
The present invention is directed toward an X-ray scanner that has an electron source and an anode. The anode has a target surface with a series of material areas spaced along it in a scanning direction. The material areas are formed from different materials. The electron source is arranged to direc
The present invention is directed toward an X-ray scanner that has an electron source and an anode. The anode has a target surface with a series of material areas spaced along it in a scanning direction. The material areas are formed from different materials. The electron source is arranged to direct electrons at a series of target areas of the target surface, in a predetermined order, so as to generate X-ray beams having different energy spectra.
1. An X-ray scanner comprising a first electron source configured to generate a first electron beam; andan anode having a target surface comprising a first material and a second material, wherein said first material is different from said second material,said first material and second material form
1. An X-ray scanner comprising a first electron source configured to generate a first electron beam; andan anode having a target surface comprising a first material and a second material, wherein said first material is different from said second material,said first material and second material form a pattern on said target surface, the pattern comprising an elongated strip of the first material alternating with an elongated strip of the second material to form an array of alternating target areas in a ring around said scanner,the first electron source is configured to irradiate a strip of both the first material and second material simultaneously. 2. The X-ray scanner of claim 1 wherein the first and second material are formed of a uniform material. 3. The X-ray scanner of claim 1 wherein, upon irradiating the strip of both the first material and second material simultaneously, a composite X-ray spectrum is generated having an energy spectrum that is a sum of a spectra of the first material and a spectra of the second material. 4. The X-ray scanner of claim 1 further comprising a second electron source configured to generate a second electron beam. 5. The X-ray scanner of claim 1 wherein the first material area comprises a strip that extends in a direction parallel to the scanning direction. 6. The X-ray scanner of claim 1 wherein the second material area comprises a strip that extends in a direction parallel to the scanning direction. 7. The X-ray scanner of claim 1 wherein the first material area comprises a strip that extends in a direction which is oblique to the scanning direction. 8. The X-ray scanner of claim 1 wherein the second material area comprises a strip that extends in a direction which is oblique to the scanning direction. 9. The X-ray scanner of claim 1 wherein the first material area comprises a strip that extends in a direction which is transverse to the scanning direction. 10. The X-ray scanner of claim 1 wherein the second material area comprises a strip that extends in a direction which is transverse to the scanning direction. 11. The X-ray scanner of claim 1 wherein the first or second material area comprises a thin film of metal. 12. The X-ray scanner of claim 1 further comprising detectors, wherein the detectors comprise a first set of detectors and a second set of detectors and wherein, relative to said second set of detectors, the first set of detectors is more sensitive to X-rays over a spectra generated from irradiating the first material, and, relative to said first set of detectors, the second set of detectors is more sensitive to X-rays over a spectra generated from irradiating the second material. 13. The X-ray scanner of claim 12 wherein the second set of detectors comprises a filter material and a detector element. 14. The X-ray scanner of claim 1 further comprising detectors, wherein the detectors comprise a first set of detectors and a second set of detectors and wherein said first set of detectors has a different response characteristic from said second set of detectors and wherein the first set of detectors is configured to receive X-rays of a first energy spectra and the second set of detectors is configured to receive X-rays of a second energy spectra. 15. The X-ray scanner of claim 1 wherein the first and second materials are each arranged to generate X-rays having an intensity peak at two different respective fluorescent energies, and a filter material is arranged to provide different attenuations at the two fluorescent energies. 16. The X-ray scanner of claim 15 wherein the filter material has an absorption edge at a frequency between the two fluorescent energies. 17. A method of generating X-rays comprising providing at least one electron source;providing an anode with a target surface formed with parallel, elongated, alternating sections of at least two different material areas spaced along the target surface in a scanning direction; anddirecting an electron beam from the at least one electron source to simultaneously irradiate both of said at least two different material areas to generate an X-ray beam of at least two different energy spectra. 18. The method of generating X-rays of claim 17 further comprising detecting radiation using a first set of detectors and a second set of detectors and wherein said first set of detectors has a different response characteristic from said second set of detectors and wherein the first set of detectors is configured to receive X-rays of a first energy spectra and the second set of detectors is configured to receive X-rays of a second energy spectra. 19. The method of generating X-rays of claim 17 further comprising detecting radiation using a first set of detectors and a second set of detectors and wherein, relative to said second set of detectors, the first set of detectors is more sensitive to X-rays over a spectra generated from irradiating a first of the at least two different material areas, and, relative to said first set of detectors, the second set of detectors is more sensitive to X-rays over a spectra generated from irradiating a second of the at least two different material areas.
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