Patents Assigned to Nuctech Company Limited
  • Patent number: 10775302
    Abstract: The present disclosure provides a terahertz detector. The terahertz detector includes a planar array structure that is constituted by a plurality of pixel units, the plurality of pixel units each include N sub pixels and each of the sub pixels includes no more than one signal trigger configured to transform a terahertz signal to an electrical current pulsing signal, and each of the plurality of pixel units detects a signal that is a sum of the electrical current pulsing signals of the N sub pixels, where N is an integer greater than 1.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: September 15, 2020
    Assignee: NUCTECH COMPANY LIMITED
    Inventors: Ziran Zhao, Haifan Hu, Xuming Ma, Yingxin Wang
  • Patent number: 10775278
    Abstract: It is disclosed a scrubbing and sampling device, a card reader apparatus and a gate apparatus. The scrubbing and sampling device includes: a scrubbing and sampling portion including a first wheel and a second wheel, which are respectively capable of rotating around respective rotating axes, and a scrubbing conveyor belt tensioned by the first wheel and the second wheel and driven by rotation of the first wheel and the second wheel, to move between them; and an desorbing portion configured to desorb properties of an sample that is conveyed into the desorbing portion. The scrubbing conveyor belt is configured to move through the desorbing portion such that the desorbing portion desorbs the sample on the scrubbing conveyor belt when the scrubbing conveyor belt enters the desorbing portion.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: September 15, 2020
    Assignees: Tsinghua University, NUCTECH COMPANY LIMITED
    Inventors: Qingjun Zhang, Yuanjing Li, Ziran Zhao, Ge Li, Qiufeng Ma
  • Patent number: 10775320
    Abstract: The present disclosure discloses an afterglow detection device and an afterglow detection method. The afterglow detection device comprises: an X-ray tube for emitting an X-ray beam; a first reading circuit for receiving a first detected signal from a to-be-detected detector to form and output a first measurement signal according to the first detected signal, the to-be-detected detector being connected to the first reading circuit and disposed on a beam-out side of the X-ray tube to receive radiation of the X-ray beam and outputting the first detected signal to the first reading circuit at the time of detection; a residual ray detector disposed on a beam-out side of the X-ray tube; a second reading circuit connected to the residual ray detector for receiving a second detected signal from the residual ray detector to form and output a second measurement signal according to the second detected signal.
    Type: Grant
    Filed: May 5, 2019
    Date of Patent: September 15, 2020
    Assignee: NUCTECH COMPANY LIMITED
    Inventors: Shuwei Li, Wenjian Zhang, Xiang Zou, Bozhen Zhao, Qingjun Zhang, Huishao He, Yongqiang Wang, Yanchun Wang
  • Patent number: 10768575
    Abstract: An imaging device and an imaging method by millimeter wave 3D holographic scanning are disclosed. In an embodiment, the millimeter wave 3D holographic scanning imaging device may include: a conveying apparatus configured to convey an object located thereon in a first direction; and at least one millimeter wave transceiving module arranged beside the conveying apparatus, each configured to be enabled to scan the object when the conveying apparatus conveys the object through the respective millimeter wave transceiving module, wherein each millimeter wave transceiving module is arranged to have its longitudinal direction extend in a direction intersecting the first direction, and includes a millimeter wave transceiving antenna array for transceiving millimeter wave signals.
    Type: Grant
    Filed: August 19, 2016
    Date of Patent: September 8, 2020
    Assignee: Nuctech Company Limited
    Inventors: Zhiqiang Chen, Yuanjing Li, Ziran Zhao, Wanlong Wu, Zongjun Shen, Li Zhang, Yinong Liu, Yingkang Jin, Wentao Yu
  • Patent number: 10754056
    Abstract: A quick vehicle check system comprises a radiation source which produces a first X ray with a first dose and a second X ray with a second dose, wherein the first dose is smaller than the second dose, and the first X ray is used for checking a first part of a checked vehicle and the second X ray is used for checking a second part of the checked vehicle; a first sensor for detecting a set position of the checked vehicle; a second sensor for detecting a passing distance of the checked vehicle; and a control unit coupled with the first sensor and the second sensor, which receives the set position of the checked vehicle from the first sensor and receives the passing distance of the checked vehicle from the second sensor.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: August 25, 2020
    Assignees: TSINGHUA UNIVERSITY, NUCTECH COMPANY LIMITED
    Inventors: Ying Li, Jianmin Li, Tao Song
  • Patent number: 10748731
    Abstract: 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: Grant
    Filed: December 28, 2017
    Date of Patent: August 18, 2020
    Assignees: TSINGHUA UNIVERSITY, NUCTECH COMPANY LIMITED
    Inventors: Wenhui Huang, Dongsheng Zhang, Qingxiu Jin, Chengjun Tan, Donghai Liu, Qun Luo, Chuanxiang Tang
  • Patent number: 10739282
    Abstract: A device comprises: at least two lead curtains; a supporting assembly comprising a working area and a standby area; a first transmission assembly to drive the lead curtains to move in a conveying channel; and a second transmission assembly to transfer the lead curtains between the standby area and the working area, wherein the second transmission assembly transfers the lead curtains from the standby area to the working area, so that the lead curtains fall into a starting point of the conveying channel and are located behind an article to be detected; the first transmission assembly drives the lead curtains to move with the article to be detected in front and drive the lead curtains to move from the starting point of the working area to a starting point of the standby area; and the second transmission assembly drives the lead curtains to enter and move in the standby area.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: August 11, 2020
    Assignee: Nuctech Company Limited
    Inventors: Zhiqiang Chen, Li Zhang, Mingzhi Hong, Yong Zhou, Yihong Liu
  • Patent number: 10739491
    Abstract: The present disclosure discloses a radiation inspection system and a radiation inspection method. The radiation inspection system comprises a radiation source and a beam modulating device. The beam modulating device comprises a first collimating structure disposed at a beam exit side of the radiation source and a second collimating structure disposed at a beam exit side of the first collimating structure. The second collimating structure is movable relative to the first collimating structure to change a relative position of the first collimating port of the first collimating structure with the second collimating port of the second collimating structure, and the beam modulating device is shifted between a first operational state in which the beam modulating device modulates an initial beam into a fan beam, and a second operational state in which the beam modulating device modulates the initial beam into a pencil beam variable in position.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: August 11, 2020
    Assignees: TSINGHUA UNIVERSITY, NUCTECH COMPANY LIMITED
    Inventors: Yigang Yang, Dongyu Wang, Hao Yu, Quanwei Song, Jianmin Li, Weizhen Wang, Yulan Li, Chunguang Zong, Qinjian Zhang, Ming Zeng, Zhiqiang Chen, Yuanjing Li, Li Zhang
  • Publication number: 20200253033
    Abstract: Embodiments of the present disclosure disclose a multi-output high-voltage power supply including a channel selection circuit (103) including a plurality of switches; and a high-voltage power supply module (101) connected to the channel selection circuit (103), wherein the high-voltage power supply module (101) includes a fine adjusting power supply component (110) and a plurality of coarse adjusting power supply components (120-1 to 120-N) connected in series, wherein one high-voltage output terminal of the high-voltage power supply module (101) is connected to a common terminal of the channel selection circuit (103), and the other high-voltage output terminal of the high-voltage power supply module (101) is grounded through a current sampling resistor.
    Type: Application
    Filed: December 26, 2019
    Publication date: August 6, 2020
    Applicants: Tsinghua University, NUCTECH COMPANY LIMITED, NuRay Technology Co., Ltd
    Inventors: Yuanjing LI, Yaohong LIU, Huaping TANG, Jinsheng LIU, Xiying LIU, Zhanfeng QIN, Wei JIA, Jinsong PAN
  • Patent number: 10732306
    Abstract: A slow neutron detection device is disclosed, comprising: a first slow neutron converter and a second slow neutron converter, and a readout electrode wire set and cathode wire sets arranged between the first slow neutron converter and the second slow neutron converter. By arranging a readout circuit between the two slow neutron converters, an electron drift distance is reduced by half without changing a dimension of the detection device, and an average over-threshold probability of a signal is increased.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: August 4, 2020
    Assignees: Nuctech Company Limited, Tsingchua University
    Inventors: Yigang Yang, Yuanjing Li, Zhujun Fang, Yulan Li
  • Patent number: 10724969
    Abstract: An X-ray detection method and an X-ray detector are provided. The X-ray detection method according to embodiments of the present disclosure includes: dividing an energy range of photons emitted by an X-ray source into a number N of energy windows, where N is an integer greater than 0; obtaining a weighting factor for each of the number N of energy windows based on linear attenuation coefficients of a substance of interest and a background substance of an imaging target; obtaining a weighting factor matrix for M output channels of an X-ray detector based on the weighting factor for each of the number N of energy windows, where M is an integer greater than 0; and obtaining output results of the M output channels based on the weighting factor matrix and numbers of photons having an energy range falling into individual energy windows of the number N of energy windows.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: July 28, 2020
    Assignees: NUCTECH COMPANY LIMITED, TSINGHUA UNIVERSITY
    Inventors: Yuxiang Xing, Xiaoyue Guo, Zhi Deng, Le Shen, Li Zhang, Zhiqiang Chen, Liang Li
  • Patent number: 10718128
    Abstract: A vehicle inspection system is described. The vehicle inspection system comprises: an inspection device, for performing an inspection on a vehicle to be inspected; a carrier platform, for carrying the vehicle to be inspected; and an unmanned controlled travelling device for moving the carrier platform to pass through a scanning area of the inspection device, so as to perform the inspection on the vehicle to be inspected. In the present disclosure, the vehicle to be inspected is carried by the carrier platform, and the unmanned controlled travelling device is used to move the carrier platform to pass through the scanning area of the inspection device, so that the vehicle to be inspected can be subject to inspection smoothly. There is no driver required to drive through the scanning area in this process, thus avoiding exposure of a driver to a threat of radiation.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: July 21, 2020
    Assignee: NUCTECH COMPANY LIMITED
    Inventors: Zhiqiang Chen, Yuanjing Li, Jianmin Li, Shangmin Sun, Yu Hu, Yuan Ma, Qiangqiang Wang
  • Publication number: 20200209192
    Abstract: Embodiments of the present disclosure provide an ion mobility spectrometer device. The ion mobility spectrometer device includes: an ion mobility tube, a sampling device, and a sampling and circulating gas path. The sampling device includes a solid sample desorption device and a gas sampling device. The solid sample desorption device is configured to process the solid sample into a first mixed gas containing the solid sample, and the gas sampling device is configured to process the gas sample into a second mixed gas containing the gas sample. The sampling and circulating gas path is configured to transfer the first mixed gas and/or the second mixed gas into the ion mobility tube for detection.
    Type: Application
    Filed: December 26, 2019
    Publication date: July 2, 2020
    Applicants: NUCTECH COMPANY LIMITED, Tsinghua University
    Inventors: Qingjun ZHANG, Yuanjing LI, Zhiqiang CHEN, Jianmin LI, Yaohong LIU, Weiping ZHU, Qiufeng MA, Biao CAO, Ge LI, Wei WANG, Lili YAN, Guangqin LI
  • Publication number: 20200212251
    Abstract: Embodiments of the present disclosure disclose a backside processing method for a back-illuminated photoelectric device. The backside processing method includes: mechanically thinning the back-illuminated photoelectric device such that a thickness of the back-illuminated photoelectric device reaches a first desired thickness; and chemically thinning and chemically polishing the back side of the mechanically thinned back-illuminated photoelectric device by using a nitric acid solution and a hydrofluoric acid solution such that the thickness of the mechanically thinned back-illuminated photoelectric device reaches a second desired thickness and a surface roughness of the back side of the back-illuminated photoelectric device reaches a desired surface roughness.
    Type: Application
    Filed: December 26, 2019
    Publication date: July 2, 2020
    Applicants: Tsinghua University, NUCTECH COMPANY LIMITED
    Inventors: Wenjian Zhang, Qingjun Zhang, Xiang Zou, Yiyan Gong
  • Publication number: 20200209384
    Abstract: A millimeter wave security check gate is provided, comprising: a gate body; and a top millimeter wave imaging system, comprising: a millimeter wave transceiving antenna array disposed at a top of the gate body, wherein the millimeter wave transceiving antenna array comprises at least one transmitting antenna unit and a plurality of receiving antenna units; and a millimeter wave signal source connected with the millimeter wave transceiving antenna array.
    Type: Application
    Filed: November 14, 2019
    Publication date: July 2, 2020
    Applicant: Nuctech Company Limited
    Inventors: Ziran Zhao, Zhimin Zheng, Lingbo Qiao, Yingkang Jin, Wenguo Liu
  • Patent number: 10701787
    Abstract: The disclosed technology relates to an X-ray conversion target. In one aspect, the X-ray conversion target includes target body and a target part arranged within the target body, the target part having a first face configured to produce X-rays. The X-ray conversion target further comprises a cooling passage having a side wall, at least a part of the side wall being consisted of a portion of the target part.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: June 30, 2020
    Assignees: Nuctech Company Limited, Tsinghua University
    Inventors: Yaohong Liu, Ziran Zhao, Jinsheng Liu, Huaibi Chen, Liang Zhang, Dongsheng Zhang
  • Patent number: 10699887
    Abstract: Embodiments of the present disclosure relate to a preparation and feed apparatus of a standard sample for calibration of a trace-analysis instrument, and especially to a preparation and feed apparatus of a standard sample for calibration of a gas chromatograph-ion mobility spectrometer. When the trace-analysis instrument is being calibrated by taking advantage of the preparation and feed apparatus according to embodiments of the disclosure, it is unnecessary to use an additional dedicated tool and steps to prepare the sample for testing and to use an organic solvent or a dedicated sample application/dispensing tool, resulting in that the trace-analysis instrument is simple and convenient to carry and use, and the substance for calibration is also convenient to store and exchange; moreover, the trace-analysis instrument is also safe, reliable and environmentally friendly.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: June 30, 2020
    Assignee: NUCTECH COMPANY LIMITED
    Inventors: Qingjun Zhang, Yuanjing Li, Ziran Zhao, Weiping Zhu, Nan Bai, Qiufeng Ma
  • Patent number: 10690803
    Abstract: A mobile scanning inspection system, comprising a vehicle body and an inspection arm including a cross arm and a vertical arm, wherein a first inspection device and a second inspection device are provided on the cross arm; the first inspection device is on the side close to the vehicle body and it emits a first laser inspection plane parallel to the side plane of the vehicle body, and the length of the longest portion of the first laser inspection plane is longer than the length of the vehicle body; the second inspection device is provided on the side close to the vertical arm and it emits a second laser inspection plane parallel to the side plane of the vehicle body and the second laser inspection plane is centered on the vertical arm, and extends a first preset distance and a second preset distance forward and backward.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: June 23, 2020
    Assignee: NUCTECH COMPANY LIMITED
    Inventors: Tao Jiang, Yanwei Xu, Shangmin Sun, Yu Hu, Weifeng Yu, Xuejing Yang, Youai Yu, Ke Li, Defang Meng
  • Patent number: 10670457
    Abstract: A Raman spectrum inspection apparatus is provided, including: a exciting light source configured to emit an exciting light to a sample to be inspected; an optical device configured to collect an optical signal from a position, which is irradiated by the exciting light, of the sample to be inspected; and a spectrometer configured to generate a Raman spectrum of the sample to be inspected from the received optical signal, wherein an excitation optical path in which the exciting light passes from the exciting light device to the sample to be inspected and a detection optical path in which the optical signal received by the spectrometer passes from the sample to be inspected to the spectrometer are separated from each other.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: June 2, 2020
    Assignee: NUCTECH COMPANY LIMITED
    Inventors: Jianhong Zhang, Hongqiu Wang, Li Zhang
  • Patent number: 10670743
    Abstract: A semiconductor detector and a packaging method thereof. The semiconductor detector includes: a cathode circuit board including a read out chip, a high voltage side top layer of the cathode circuit board, a bottom connection layer of the cathode circuit board and a dielectric filled between the high voltage side top layer and the bottom connection layer, wherein the high voltage side top layer is connected to the bottom connection layer through a via hole; and a detector crystal including a crystal body, an anode and a cathode, the anode is connected to the read out chip of the cathode circuit board, the high voltage side top layer is connected to an input terminal of the semiconductor detector and the bottom connection layer directly contacts the cathode of the detector crystal to connect the cathode to the cathode circuit board.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: June 2, 2020
    Assignee: NUCTECH COMPANY LIMITED
    Inventors: Lan Zhang, Yingshuai Du, Bo Li, Zonggui Wu, Jun Li, Xuepeng Cao, Haifan Hu, Jianping Gu, Guangming Xu, Bicheng Liu