Patents Assigned to Shenzhen Institute of Terahertz Technology and Innovation
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Patent number: 10928547Abstract: A terahertz security check method and system may include: a terahertz scanning device collecting a terahertz original image of a human body under test, and sending the same to a central server that identifies the terahertz original image, and determines whether the human body under test carries an article. If so, the image is marked with the position of the article and sent to a monitoring terminal. The monitoring terminal correspondingly marking the position of the article on a pre-stored human body cartoon image, and displaying the terahertz original images before and after marking to monitoring personnel, so that the monitoring personnel determine whether the central server has an identification error; and if so, the monitoring terminal changing a marker on the human body cartoon image, and sending the changed cartoon image to a client of security check personnel for displaying.Type: GrantFiled: December 21, 2016Date of Patent: February 23, 2021Assignees: CHINA COMMUNICATION TECHNOLOGY CO., LTD., SHENZHEN INSTITUTE OF TERAHERTZ TECHNOLOGY AND INNOVATIONInventors: Hanjiang Chen, Tiansheng Zhang, Chunchao Qi, Shukai Zhao
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Publication number: 20200333504Abstract: A millimeter wave image based human body foreign object detection method, comprising: acquiring a millimeter wave gray scale image of a human body; according to a pre-determined foreign object imaging characteristic, extracting from the millimeter wave gray scale image a foreign object area image; according to a pre-determined foreign object image recognition algorithm, performing calculations on the foreign object area image, and acquiring a foreign object image from the foreign object area image; displaying the foreign object image as a foreign object detection result. Also provided is a millimeter wave image based human body foreign object detection system.Type: ApplicationFiled: August 4, 2017Publication date: October 22, 2020Applicants: CHINA COMMUNICATION TECHNOLOGY CO.,LTD., Shenzhen Institute of Terahertz Technology and Innovation, Shenzhen Institute of Terahertz Technology and InnovationInventors: Hanjiang Chen, Zhiquan Li, Chunchao Qi, Shukai Zhao
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Publication number: 20200284722Abstract: A terahertz full-polarization-state detection spectrograph is provided, which comprises a terahertz wave generator, a polarizer, a polarizing beam-splitting sheet, a horizontal terahertz detector, and a vertical terahertz detector. The terahertz wave generator produces a terahertz wave, and the purity of the terahertz wave is optimized by the polarizer; a detected sample modulates the terahertz wave, the purity of which is optimized, to obtain a terahertz modulated wave; the polarizing beam-splitting sheet decomposes the terahertz modulated wave into a horizontal terahertz wave and a vertical terahertz wave which are vertical to each other in a polarization state; the two corresponding terahertz detectors are used for detecting the two terahertz waves respectively, and then the characteristics of the detected sample are analyzed according to the detection result.Type: ApplicationFiled: September 13, 2017Publication date: September 10, 2020Applicants: Shenzhen Institute of Terahertz Technology and Innovation, Shenzhen Terahertz System Equipment Co., Ltd., Shenzhen Terahertz System Equipment Co., Ltd.Inventors: Yi Pan, Shichang Peng, Qing Ding
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Publication number: 20200220261Abstract: An electrically scanned array antenna device applied to a millimeter wave imaging system is provided. The electrically scanned array antenna device comprises an adjustable light source for outputting an optical signal with an adjustable wavelength; an electro-optical modulation module; an optocouple; a time delay module for performing optical delay of different duration on each modulated signal, and correspondingly changing the duration of the optical delay according to the wavelength of the optical signal to obtain modulated signals of different phases; an optical detector; and an array antenna. The millimeter wave is loaded on the optical signal with an adjustable wavelength to obtain a modulated signal; the modulated signal is divided into multiple signals; time delay of different duration is performed on each signal; and millimeter wave signals of different phases are obtained after demodulation and are simultaneously transmitted to scan an object to be measured.Type: ApplicationFiled: December 15, 2016Publication date: July 9, 2020Applicants: CHINA COMMUNICATION TECHNOLOGY CO.,LTD., Shenzhen Institute of Terahertz Technology and InnovationInventors: Zhihui Feng, Chunchao Qi, Hanjiang Chen, Rong Wang, Shukai Zhao
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Publication number: 20200217984Abstract: A terahertz metamaterial waveguide and device are provided. The terahertz metamaterial waveguide comprises a subwavelength substrate layer and a metal layer. One surface of the subwavelength substrate layer is plated with the metal layer, and a plurality of periodically-distributed micropores is formed in the metal layer. The subwavelength substrate layer, the metal layer, and the formed plurality of periodically-distributed micropores are described.Type: ApplicationFiled: December 16, 2016Publication date: July 9, 2020Applicants: Shenzhen Terahertz System Equipment Co., Ltd., Shenzhen Institute of Terahertz Technology and Innovation, Shenzhen Institute of Terahertz Technology and InnovationInventors: Yi Pan, Shichang Peng, Qing Ding
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Patent number: 10541507Abstract: The present invention relates to a generation device and a generation method of terahertz waves with orbital angular momentum. The generation device comprises a first laser and a second laser; the first laser radiates a first laser beam; the second laser radiates a second laser beam; and the frequency difference between the first laser beam and the second laser beam is within a terahertz wave band.Type: GrantFiled: May 23, 2017Date of Patent: January 21, 2020Assignees: China Communication Technology Co., Ltd., Shenzhen Institute of Terahertz Technology and InnovationInventors: Zhu Zheng, Qing Ding
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Publication number: 20190353776Abstract: A millimeter wave imaging apparatus includes a crystal oscillator, a power divider, a millimeter wave transceiver unit, a local-oscillation signal processing unit, a second frequency mixer and an image processing device; the power divider performs power distribution on an oscillation signal generated by the crystal oscillator, and outputs a clock trigger signal and a local-oscillation signal; the local-oscillation signal processing device processes the local-oscillation signal and outputs a second local-oscillation signal; the millimeter wave transceiver unit processes an echo signal reflected by an object to be detected, and outputs a first intermediate-frequency signal; the second frequency mixer mixes the second local-oscillation signal and the first intermediate-frequency signal, and outputs a second intermediate-frequency signal; the image processing module processes the second intermediate-frequency signal, and images the object to be detected.Type: ApplicationFiled: August 9, 2016Publication date: November 21, 2019Applicants: China Commuunication Technology Co., Ltd., Shenzhen Institute of Terahertz Technology and Innovation Co., Ltd.Inventors: Juncheng LIU, Chao SUN, Chunchao QI
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Patent number: 10408679Abstract: The present application relates to a terahertz time-domain spectroscopy system. In this terahertz time-domain spectroscopy system, the femtosecond laser light radiated by the femtosecond laser is collimated by a first diaphragm, and then is split by a beam splitter into a pump light and a probe light. The pump light passes through the first light path module to generate a terahertz pulse, and the probe light passes through the first light path module to generate a linear polarization probe light having the same optical distance as that of the pump light. The linear polarization probe light and the terahertz pulse are combined by a beam combiner to obtain a light beam to be detected carrying the terahertz pulse information. Two electro-optical crystals with the same thickness are used in a detection device simultaneously.Type: GrantFiled: August 4, 2016Date of Patent: September 10, 2019Assignees: Shenzhen Institute of Terahertz Technology and Innovation, Shenzhen Terahertz System Equipment Co., LTD.Inventors: Shichang Peng, Yi Pan, Chen Li, Qing Ding
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Patent number: 10161790Abstract: A delay line device and a terahertz time-domain spectrometer system include: a baseplate, a slide rail component, in which the slide rail component includes a slide, a reflector, a grating ruler component, and an electric-magnetic induction component. When the electric-magnetic component, after being applied a current, cuts the magnetic induction coil to generate power to push the slide moving, the grating ruler component placed on the slide rail component collects the movement information of the slide. The slide's movement drives the reflector placed on the slide to move together to change the optical distance of a pump light, so as to generate the delay between the pump light and a probe light.Type: GrantFiled: August 10, 2017Date of Patent: December 25, 2018Assignees: Shenzhen Institute of Terahertz Technology and Innovation, Shenzhen Terahertz System Equipment Co., Ltd.Inventors: Qing Ding, Shichang Peng, Yi Pan, Chen Li
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Publication number: 20180274978Abstract: A delay line device and a terahertz time-domain spectrometer system include: a baseplate, a slide rail component, in which the slide rail component includes a slide, a reflector, a grating ruler component, and an electric-magnetic induction component. When the electric-magnetic component, after being applied a current, cuts the magnetic induction coil to generate power to push the slide moving, the grating ruler component placed on the slide rail component collects the movement information of the slide. The slide's movement drives the reflector placed on the slide to move together to change the optical distance of a pump light, so as to generate the delay between the pump light and a probe light. The changes to the abstract are shown below: A delay line device and a terahertz time-domain spectrometer system include: a baseplate, a slide rail component, in which the slide rail component includes a slide, a reflector, a grating ruler component, and an electric-magnetic induction component.Type: ApplicationFiled: August 10, 2017Publication date: September 27, 2018Applicants: Shenzhen Institute of Terahertz Technology and Innovation, Shenzhen Terahertz System Equipment Co., Ltd., Shenzhen Terahertz System Equipment Co., Ltd.Inventors: Qing Ding, Shichang Peng, Yi Pan, Chen Li