Patents by Inventor Chuanxiang Tang
Chuanxiang Tang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11562873Abstract: A magnetron is provided and includes a tube body with a plurality of communicated first cavities therein, a plurality of anodes in the first cavities including a cylinder and a plurality of vanes, outer ends of the vanes are connected with an inner circumferential surface of the cylinder; a first resonant cavity and a second resonant cavity are formed between the adjacent vanes, the cylinder is provided with a plurality of coupling slots arranged at intervals and running through the cylinder to communicate the first resonant cavity with the first cavity; a plurality of cathode arranged in and coaxially with the cylinder; the cathodes and inner ends of the vanes are spaced apart; at least part of the cathodes are located inside vanes, and an output slot is defined on the tube body for communicating the first cavity with an outside.Type: GrantFiled: July 9, 2021Date of Patent: January 24, 2023Assignee: TSINGHUA UNIVERSITYInventors: Jiaru Shi, Hao Zha, Jiayang Liu, Huaibi Chen, Chuanxiang Tang
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Patent number: 11456146Abstract: An anode target, a ray light source, a computed tomography device, and an imaging method, which relate to the technical field of ray processing. The anode target comprises a first anode target, a second anode target, and a ceramic plate. The first anode target is used for enabling, by means of a first voltage carried on the first anode target, an electron beam emitted by a cathode to generate a first ray on a target spot of the first anode target. The second anode target is used for enabling, by means of a second voltage carried on the second anode target, an electron beam emitted by the cathode to generate a second tray on a target spot of the second anode. The ceramic plate is used for isolating the first anode target from the second anode target. By means of the anode target, the ray light source, the computed tomography device and the imaging method, dual-energy distributed ray imaging data can be provided and the imaging quality of a ray system can be improved.Type: GrantFiled: September 13, 2018Date of Patent: September 27, 2022Assignees: Nuctech Company Limited, TSINGHUA UNIVERSITYInventors: Chengjun Tan, Wenhui Huang, Chuanxiang Tang, Qingxiu Jin, Dongsheng Zhang, Qun Luo, Donghai Liu, Luming Zhang, Peidong Wu
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Patent number: 11330695Abstract: An arrayed X-ray source and an X-ray imaging apparatus are described. An example X-ray source includes a housing and X-ray generators located in the housing. The X-ray generators are arranged in an array. The X-ray generators are provided separately from each other and configured to emit X-rays independently of each other.Type: GrantFiled: July 16, 2020Date of Patent: May 10, 2022Assignees: Tsinghua University, Nuctech Company LimitedInventors: Chengjun Tan, Wenhui Huang, Qingxiu Jin, Chuanxiang Tang, Donghai Liu, Qun Luo, Peidong Wu, Cheng Song, Yunze Ding, Cong Xu, Luming Zhang, Shuo Wang
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Patent number: 11315750Abstract: An anode target comprises: a plurality of target structures, used for receiving an electron beam emitted by a cathode to generate a ray, the plurality of target structures being of three-dimensional structures having bevels; a copper cooling body, used for bearing the target structures and comprising an oxygen-free copper cooling body; a cooling oil tube, used for cooling the anode target; and a shielding layer, used for achieving a shielding effect and comprising a tungsten shielding layer. The anode target, the ray light source, the computed tomography scanning device, and the imaging method in the present application are able to enable all target spots on the anode target to be distributed on a straight line, imaging quality of a ray system is improved, and complexity of an imaging system is reduced.Type: GrantFiled: June 1, 2018Date of Patent: April 26, 2022Assignees: Nuctech Company Limited, TSINGHUA UNIVERSITYInventors: Chengjun Tan, Wenhui Huang, Chuanxiang Tang, Qingxiu Jin, Dongsheng Zhang, Qun Luo, Donghai Liu, Luming Zhang, Peidong Wu
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Publication number: 20220020553Abstract: A magnetron is provided and includes a tube body with a plurality of communicated first cavities therein, a plurality of anodes in the first cavities including a cylinder and a plurality of vanes, outer ends of the vanes are connected with an inner circumferential surface of the cylinder; a first resonant cavity and a second resonant cavity are formed between the adjacent vanes, the cylinder is provided with a plurality of coupling slots arranged at intervals and running through the cylinder to communicate the first resonant cavity with the first cavity; a plurality of cathode arranged in and coaxially with the cylinder; the cathodes and inner ends of the vanes are spaced apart; at least part of the cathodes are located inside vanes, and an output slot is defined on the tube body for communicating the first cavity with an outside.Type: ApplicationFiled: July 9, 2021Publication date: January 20, 2022Inventors: Jiaru SHI, Hao ZHA, Jiayang LIU, Huaibi CHEN, Chuanxiang TANG
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Patent number: 11201030Abstract: A distributed X-ray light source comprises: a plurality of arranged cathode assemblies used for emitting electron beams; an anode target used for receiving the electron beams emitted by the cathode assemblies; and compensation electrodes and focusing electrodes provided in sequence between the plurality of the cathode assemblies and the anode target, the compensation electrode being used for adjusting electric field strength at two ends of a grid structure in each cathode assembly, and the focusing electrode being used for focusing the electron beams emitted by the cathode assemblies, wherein the focusing electrode corresponding to at least one cathode assembly in the plurality of the cathode assemblies comprises a first electrode and a second electrode which are separately provided, and an electron beam channel is formed between the first electrode and the second electrode.Type: GrantFiled: May 29, 2018Date of Patent: December 14, 2021Assignees: Nuctech Company Limited, TSINGHUA UNIVERSITYInventors: Chengjun Tan, Wenhui Huang, Chuanxiang Tang, Qingxiu Jin, Dongsheng Zhang, Qun Luo, Donghai Liu, Luming Zhang, Peidong Wu
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Patent number: 11170966Abstract: A distributed X-ray light source comprises: a plurality of arranged cathode assemblies used for emitting electron beams; an anode target used for receiving the electron beams emitted by the cathode assemblies; and compensation electrodes and focusing electrodes provided in sequence between the plurality of the cathode assemblies and the anode target, the compensation electrode being used for adjusting electric field strength at two ends of a grid structure in each cathode assembly, and the focusing electrode being used for focusing the electron beams emitted by the cathode assemblies, wherein the focusing electrode corresponding to at least one cathode assembly in the plurality of the cathode assemblies comprises a first electrode and a second electrode which are separately provided, and an electron beam channel is formed between the first electrode and the second electrode.Type: GrantFiled: May 29, 2018Date of Patent: November 9, 2021Assignees: Nuctech Company Limited, TSINGHUA UNIVERSITYInventors: Chengjun Tan, Wenhui Huang, Chuanxiang Tang, Qingxiu Jin, Dongsheng Zhang, Qun Luo, Donghai Liu, Luming Zhang, Peidong Wu
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Patent number: 11054542Abstract: Embodiments of the disclosure provide a multi-ray-source accelerator and an inspection method. The multi-ray-source accelerator includes: a plurality of acceleration tubes, each acceleration tube of the plurality of acceleration tubes including an acceleration tube body that defines at least one cavity, the plurality of acceleration tubes being arranged in at least one row along a straight line or an arc and connected in series with each other; and a microwave unit configured to provide a microwave field to the plurality of acceleration tubes. The plurality of acceleration tubes are arranged to allow the microwave unit to provide the microwave field from an acceleration tube at one end of the plurality of acceleration tubes so as to accelerate electron beams in cavities of all the acceleration tubes.Type: GrantFiled: July 13, 2020Date of Patent: July 6, 2021Assignees: Tsinghua University, Nuctech Company LimitedInventors: Kejun Kang, Huaibi Chen, Yaohong Liu, Chuanxiang Tang, Yuanjing Li, Hao Zha, Liang Zhang
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Publication number: 20210084739Abstract: An arrayed X-ray source and an X-ray imaging apparatus are described. An example X-ray source includes a housing and X-ray generators located in the housing. The X-ray generators are arranged in an array. The X-ray generators are provided separately from each other and configured to emit X-rays independently of each other.Type: ApplicationFiled: July 16, 2020Publication date: March 18, 2021Inventors: Chengjun Tan, Wenhui Huang, Qingxiu Jin, Chuanxiang Tang, Donghai Liu, Qun Luo, Peidong Wu, Cheng Song, Yunze Ding, Cong Xu, Luming Zhang, Shuo Wang
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Publication number: 20210018649Abstract: Embodiments of the disclosure provide a multi-ray-source accelerator and an inspection method. The multi-ray-source accelerator includes: a plurality of acceleration tubes, each acceleration tube of the plurality of acceleration tubes including an acceleration tube body that defines at least one cavity, the plurality of acceleration tubes being arranged in at least one row along a straight line or an arc and connected in series with each other; and a microwave unit configured to provide a microwave field to the plurality of acceleration tubes. The plurality of acceleration tubes are arranged to allow the microwave unit to provide the microwave field from an acceleration tube at one end of the plurality of acceleration tubes so as to accelerate electron beams in cavities of all the acceleration tubes.Type: ApplicationFiled: July 13, 2020Publication date: January 21, 2021Applicant: Nuctech Company LimitedInventors: Kejun Kang, Huaibi Chen, Yaohong Liu, Chuanxiang Tang, Yuanjing Li, Hao Zha, Liang Zhang
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Patent number: 10748731Abstract: An electron gun, an X-ray source and a CT device are provided. The electron gun includes a body having a first end portion and a second end portion opposite to each other, wherein the first end portion is a connecting end portion; an internal cavity is formed in the body and has an opening positioned on the second end portion; a cathode, a grid, a compensation electrode and a focus electrode, orderly arranged in the internal cavity in a direction from the first end portion to the second end portion.Type: GrantFiled: December 28, 2017Date of Patent: August 18, 2020Assignees: TSINGHUA UNIVERSITY, NUCTECH COMPANY LIMITEDInventors: Wenhui Huang, Dongsheng Zhang, Qingxiu Jin, Chengjun Tan, Donghai Liu, Qun Luo, Chuanxiang Tang
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Publication number: 20200170097Abstract: A distributed X-ray light source comprises: a plurality of arranged cathode assemblies used for emitting electron beams; an anode target used for receiving the electron beams emitted by the cathode assemblies; and compensation electrodes and focusing electrodes provided in sequence between the plurality of the cathode assemblies and the anode target, the compensation electrode being used for adjusting electric field strength at two ends of a grid structure in each cathode assembly, and the focusing electrode being used for focusing the electron beams emitted by the cathode assemblies, wherein the focusing electrode corresponding to at least one cathode assembly in the plurality of the cathode assemblies comprises a first electrode and a second electrode which are separately provided, and an electron beam channel is formed between the first electrode and the second electrode.Type: ApplicationFiled: May 29, 2018Publication date: May 28, 2020Applicants: Nuctech Company Limited, TSINGHUA UNIVERSITYInventors: Chengjun TAN, Wenhui HUANG, Chuanxiang TANG, Qingxiu JIN, Dongsheng ZHANG, Qun LUO, Donghai LIU, Luming ZHANG, Peidong WU
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Publication number: 20200168426Abstract: An anode target comprises: a plurality of target structures, used for receiving an electron beam emitted by a cathode to generate a ray, the plurality of target structures being of three-dimensional structures having bevels; a copper cooling body, used for bearing the target structures and comprising an oxygen-free copper cooling body; a cooling oil tube, used for cooling the anode target; and a shielding layer, used for achieving a shielding effect and comprising a tungsten shielding layer. The anode target, the ray light source, the computed tomography scanning device, and the imaging method in the present application are able to enable all target spots on the anode target to be distributed on a straight line, imaging quality of a ray system is improved, and complexity of an imaging system is reduced.Type: ApplicationFiled: June 1, 2018Publication date: May 28, 2020Applicants: Nuctech Company Limited, TSINGHUA UNIVERSITYInventors: Chengjun TAN, Wenhui HUANG, Chuanxiang TANG, Qingxiu JIN, Dongsheng ZHANG, Qun LUO, Donghai LIU, Luming ZHANG, Peidong WU
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Publication number: 20200168428Abstract: An anode target, a ray light source, a computed tomography device, and an imaging method, which relate to the technical field of ray processing. The anode target comprises a first anode target, a second anode target, and a ceramic plate. The first anode target is used for enabling, by means of a first voltage carried on the first anode target, an electron beam emitted by a cathode to generate a first ray on a target spot of the first anode target. The second anode target is used for enabling, by means of a second voltage carried on the second anode target, an electron beam emitted by the cathode to generate a second tray on a target spot of the second anode. The ceramic plate is used for isolating the first anode target from the second anode target. By means of the anode target, the ray light source, the computed tomography device and the imaging method, dual-energy distributed ray imaging data can be provided and the imaging quality of a ray system can be improved.Type: ApplicationFiled: September 13, 2018Publication date: May 28, 2020Applicants: Nuctech Company Limited, TSINGHUA UNIVERSITYInventors: Chengjun TAN, Wenhui HUANG, Chuanxiang TANG, Qingxiu JIN, Dongsheng ZHANG, Qun LUO, Donghai LIU, Luming ZHANG, Peidong WU
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Patent number: 10629402Abstract: A cathode assembly, an X-ray source and a CT device are provided. The cathode assembly includes a ceramic plug having a first and second end portions. Four wiring terminals and a protruding positioning part are provided on the first end portion. An internal cavity is formed in the ceramic plug, and a cathode is provided therein. The cathode has a filament with a positive and negative electrode leads. A grid is provided on the second end portion and has a grid voltage signal line. The cathode has a cathode surface lead. The positive electrode lead, the negative electrode lead, the grid voltage signal line and the cathode surface lead are electrically connected to one of the wiring terminals, respectively. The ceramic socket has four wiring tubes which may be electrically connected with the four wiring terminals.Type: GrantFiled: December 28, 2017Date of Patent: April 21, 2020Assignees: TSINGHUA UNIVERSITY, NUCTECH COMPANY LIMITEDInventors: Wenhui Huang, Dongsheng Zhang, Qingxiu Jin, Chengjun Tan, Donghai Liu, Qun Luo, Chuanxiang Tang
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Patent number: 10578765Abstract: This invention provides a scan method, scan system and radiation scan controller, and relates to the field of radiation. The scanning method includes obtaining detection data of an object to be inspected under radiation scanning using a detector, adjusting an accelerator output beam dose rate and/or an output electron beam energy level of a radiation emission device according to the detection data. With this method, working conditions of the accelerator of the radiation emission device may be adjusted according to the detection data detected by the detector, so that for a region having a larger mass thickness, a higher output beam dose rate or a higher electron beam output energy level is adopted to guarantee satisfied imaging technical indexes, for a region having a smaller mass thickness, a lower output beam dose rate or a lower electron beam output energy level is adopted to reduce the environmental dose level while guaranteeing satisfied imaging technical indexes.Type: GrantFiled: January 22, 2019Date of Patent: March 3, 2020Inventors: Kejun Kang, Yaohong Liu, Ziran Zhao, Wei Jia, Jianping Gu, Chuanxiang Tang, Huaibi Chen, Jianjun Gao, Wei Yin, Xiying Liu
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Patent number: 10495776Abstract: This invention provides a scan method, scan system and radiation scan controller, and relates to the field of radiation. Wherein, the scan method of this invention comprises: obtaining detection data of an object to be inspected under radiation scanning using a detector; adjusting an accelerator output beam dose rate and/or an output electron beam energy level of a radiation emission device according to the detection data. With this method, working conditions of the accelerator of the radiation emission device may be adjusted according to the detection data detected by the detector, so that for a region having a larger mass thickness, a higher output beam dose rate or a higher electron beam output energy level is adopted to guarantee satisfied imaging technical indexes, for a region having a smaller mass thickness, a lower output beam dose rate or a lower electron beam output energy level is adopted to reduce the environmental dose level while guaranteeing satisfied imaging technical indexes.Type: GrantFiled: October 10, 2016Date of Patent: December 3, 2019Inventors: Kejun Kang, Yaohong Liu, Ziran Zhao, Wei Jia, Jianping Gu, Chuanxiang Tang, Huaibi Chen, Jianjun Gao, Wei Yin, Xiying Liu
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Patent number: 10340783Abstract: The present invention provides a pulse modulating power source, which comprises: a plurality of discharging modules connected in series during discharging; a plurality of triggers corresponding to said plurality of discharging modules, wherein each trigger provides a trigger signal to the corresponding discharging module to turn it on; a control logic module for controlling the trigger signals so as to turn on said plurality of discharging modules successively with a time delay; an output terminal for outputting a voltage.Type: GrantFiled: December 28, 2012Date of Patent: July 2, 2019Assignees: Nuctech Company Limited, Tsinghua UniversityInventors: Yaohong Liu, Chuanxiang Tang, Xinshui Yan, Wei Jia, Jianjun Gao, Jinsheng Liu, Wei Yin, Xiying Liu, Hao Shi
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Publication number: 20190170894Abstract: This invention provides a scan method, scan system and radiation scan controller, and relates to the field of radiation. The scanning method includes obtaining detection data of an object to be inspected under radiation scanning using a detector, adjusting an accelerator output beam dose rate and/or an output electron beam energy level of a radiation emission device according to the detection data. With this method, working conditions of the accelerator of the radiation emission device may be adjusted according to the detection data detected by the detector, so that for a region having a larger mass thickness, a higher output beam dose rate or a higher electron beam output energy level is adopted to guarantee satisfied imaging technical indexes, for a region having a smaller mass thickness, a lower output beam dose rate or a lower electron beam output energy level is adopted to reduce the environmental dose level while guaranteeing satisfied imaging technical indexes.Type: ApplicationFiled: January 22, 2019Publication date: June 6, 2019Inventors: Kejun KANG, Yaohong LIU, Ziran ZHAO, Wei JIA, Jianping GU, Chuanxiang TANG, Huaibi CHEN, Jianjun GAO, Wei YIN, Xiying LIU
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Patent number: 10274636Abstract: The present invention may perform fluoroscopic imaging simultaneously on the subjects in at least two channels using only one electron accelerator, at least two sets of X-ray beams and at least two sets of detector systems, through the design of the electron accelerator, the shielding and collimating device, the at least two detector arrays and various mechanical composite structures. The X-ray fluoroscopic imaging system according to the present invention may be designed in specific forms of a stationary type, an assembled type, a track mobile type or vehicular mobile type, etc., and has advantages such as simple structure, low cost, strong function, good image quality and the like.Type: GrantFiled: December 23, 2014Date of Patent: April 30, 2019Assignees: NUCTECH COMPANY LIMITED, TSINGHUA UNIVERSITYInventors: Huaping Tang, Zhiqiang Chen, Chuanxiang Tang, Huaibi Chen, Yuanjing Li, Ziran Zhao, Yaohong Liu, Shangmin Sun, Xinshui Yan, Zhanfeng Qin