Patents by Inventor Dongmei Yu
Dongmei Yu 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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Publication number: 20220221667Abstract: This application discloses an optical module. A circuit board is provided with a first heat dissipation member. One end of the first heat dissipation member is attached with an optical chip, with a lens assembly covering the optical chip. The other end extends outwardly from a coverage region of the lens assembly, so that heat generated by the optical chip is diffused to outside of the lens assembly. One end of the first heat dissipation member away from the lens assembly is provided with a second heat dissipation member whose upper surface being provided with a thermally conductive member. An upper surface of the thermally conductive member is thermally coupled with an upper enclosure. The second heat dissipation member conducts the heat diffused by the first heat dissipation member to the upper enclosure via the thermally conductive member. Thus, heat dissipation is achieved via the upper enclosure.Type: ApplicationFiled: March 29, 2022Publication date: July 14, 2022Applicant: HISENSE BROADBAND MULTIMEDIA TECHNOLOGIES CO., LTD.Inventors: Jianwei YAO, Benzheng DONG, Fabu XU, Dongmei YU, Fei LIU, Congwen LUO, Jianwei MU
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Publication number: 20200173103Abstract: The disclosure relates to the technical field of dissolving pulp preparation, and particularly relates to a method for producing acetate grade dissolving pulp utilizing poplar residual slabs. The method comprises the following steps: adding an auxiliary agent for prehydrolysis, performing a Soda/AQ cooking I segment, performing a Soda/AQ cooking II segment, performing OpDQEPP bleaching and performing enzyme coprocessing, thereby preparing high-purity high-reactivity poplar residual slab acetate grade dissolving pulp. In the method, used chemicals are clean and environmental friendly, and production process is clean.Type: ApplicationFiled: November 8, 2018Publication date: June 4, 2020Applicant: QILU UNIVERSITY OF TECHNOLOGYInventors: Chaojun WU, Dongmei YU, Ronggang LI
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Patent number: 10288825Abstract: The present disclosure provides an optical module, including a circuit board, an optical chip and an optical chip driver. Where the circuit board includes a first layer provided with a first ground plane, a second layer provided with a second ground plane and a high-speed signal line between the first ground plane and the second ground plane. At least a part of the high-speed signal line is enclosed in a shielding cage which is formed by the first ground plane, the second ground plane and a plurality of metal vias connecting the first ground plane and the second ground plane in a way that the at least a part of the high-speed signal line is electromagnetic shielded by the shielding cage.Type: GrantFiled: December 21, 2017Date of Patent: May 14, 2019Assignees: HISENSE BROADBAND MULTIMEDIA TECHNOLOGIES CO., LTD., HISENSE BROADBAND MULTIMEDIA TECHNOLOGIES, LTD.Inventors: Wei Zhao, Dongmei Yu
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Publication number: 20180180828Abstract: The present disclosure provides an optical module, including a circuit board, an optical chip and an optical chip driver. Where the circuit board may include a first layer provided with a first ground plane, a second layer provided with a second ground plane and a high-speed signal line between the first ground plane and the second ground plane. at least a part of the high-speed signal line is enclosed in a shielding cage which is formed by the first ground plane, the second ground plane and a plurality of metal vias connecting the first ground plane and the second ground plane in a way that the at least a part of the high-speed signal line is electromagnetic shielded by the shielding cage.Type: ApplicationFiled: December 21, 2017Publication date: June 28, 2018Applicants: Hisense Broadband Multimedia Technologies Co., Ltd ., Hisense Broadband Multimedia Technologies, Ltd.Inventors: Wei Zhao, Dongmei Yu
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Patent number: 8873042Abstract: A Raman spectrum detection system including a light source for emitting excitation light that excites a detected object to emit Raman light; an external light path system for irradiating light emitted from the light source on the detected object and collecting the Raman light emitted by the detected object; a light detection device for receiving the Raman light collected by the external light path system and detecting the Raman light to obtain spectrum data thereof; a control device for controlling the excitation light source to provide the excitation light, controlling the light detection device to detect the Raman light, receiving the spectrum data output from the light detection device, and analyzing said spectrum data to identify the detected object; and an automatic calibration device for holding the standard sample and for automatically calibrating the system.Type: GrantFiled: December 24, 2010Date of Patent: October 28, 2014Assignees: Tsinghua University, Nuctech Company LimitedInventors: Zhiqiang Chen, Li Zhang, Yuanjing Li, Yinong Liu, Ziran Zhao, Hongqiu Wang, Dongmei Yu, Hongfeng Gai, Mingliang Li
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Publication number: 20130162989Abstract: The present disclosure relates to a Raman spectrum detection system, which comprises a light source for emitting excitation light that excites a detected object to emit Raman light; an external light path system for irradiating light emitted from the light source on the detected object and collecting the Raman light emitted by the detected object; a light detection device for receiving the Raman light collected by the external light path system and detecting said Raman light to obtain spectrum data thereof; a control device for controlling the excitation light source to provide the excitation light, controlling the light detection device to detect the Raman light, receiving the spectrum data output from the light detection device, and analyzing said spectrum data to identify the detected object; and an automatic calibration device for holding the standard sample and for automatically calibrating the system.Type: ApplicationFiled: December 24, 2010Publication date: June 27, 2013Applicants: NUCTECH COMPANY LIMITED, TSINGHUA UNIVERSITYInventors: Zhiqiang Chen, Li Zhang, Yuanjing Li, Yinong Liu, Ziran Zhao, Hongqiu Wang, Dongmei Yu, Hongfeng Gai, Mingliang Li
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Patent number: 8193486Abstract: The invention provides a security inspection system for inspecting persons, characterized in that it comprises: a passageway which provides an inspection space isolated or partially isolated from an ambient environment, in which at least one sub-passageway allowing persons to be inspected to pass is provided in the inspection space, and each of the sub-passageways is provided with at least one millimeter wave imaging device for millimeter wave imaging of persons being inspected; and an ion mobility spectrometer for ionizing particles of substance or gases that are released or volatilized from the inspected persons into the air in the passageway and then measuring a mobility rate thereof under the action of the electric field to effect identification of substances. At least one radioactive substance inspection device may also be provided in the passageway to detect whether the person being inspected carries radioactive substances.Type: GrantFiled: June 25, 2009Date of Patent: June 5, 2012Assignee: Nuctech Company LimitedInventors: Yinong Liu, Ziran Zhao, Li Zhang, Wanlong Wu, Jin Cui, Dongmei Yu, Mingliang Li
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Patent number: 8107068Abstract: The present invention relates to a Raman spectroscopy system that includes a detection center. The detection center includes at least one light source for outputting exciting light which excites a detected object to generate Raman scattered light, and an analysis device for obtaining the Raman spectroscopy of the detected object. The Raman spectroscopy system further includes at least one detection terminal, each of which includes at least one Raman probe that each introduces the exciting light to the detected object, collects the Raman scattered light generated by the detected object, and returns said Raman scattered light to the detection center. The present invention also relates to a method for detecting Raman spectroscopy.Type: GrantFiled: June 26, 2009Date of Patent: January 31, 2012Assignees: Nuctech Company Limited, Tsinghua UniversityInventors: Zhiqiang Chen, Li Zhang, Yuanjing Li, Yinong Liu, Ziran Zhao, Mingliang Li, Hongfeng Gai, Hongqiu Wang, Dongmei Yu
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Publication number: 20100072361Abstract: The invention provides a security inspection system for inspecting persons, characterized in that it comprises: a passageway which provides an inspection space isolated or partially isolated from an ambient environment, in which at least one sub-passageway allowing persons to be inspected to pass is provided in the inspection space, and each of the sub-passageways is provided with at least one millimeter wave imaging device for millimeter wave imaging of persons being inspected; and an ion mobility spectrometer for ionizing particles of substance or gases that are released or volatilized from the inspected persons into the air in the passageway and then measuring a mobility rate thereof under the action of the electric field to effect identification of substances. At least one radioactive substance inspection device may also be provided in the passageway to detect whether the person being inspected carries radioactive substances.Type: ApplicationFiled: June 25, 2009Publication date: March 25, 2010Inventors: Yinong Liu, Ziran Zhao, Li Zhang, Wanlong Wu, Jin Cui, Dongmei Yu, Mingliang Li
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Patent number: 7675037Abstract: A method and an apparatus for measuring terahertz time-domain spectrum, which relate to the field of terahertz time-domain spectrum. The method comprises the steps of: generating a first pulse laser beam from a first femtosecond laser device at a preset repetition frequency to generate THz pulses; generating a second pulse laser beam from a second femtosecond laser device at the repetition frequency; measuring electric field intensities of the THz pulses at respective phase differences between the first pulse laser beam and the second pulse laser beam; and obtaining a THz time-domain spectroscopy by performing Fourier transformation of data representative of the electric field intensities. THz spectrum measured according to the method and apparatus improves spectroscopy resolution and provides a broader detection range.Type: GrantFiled: December 26, 2007Date of Patent: March 9, 2010Assignees: Tsinghua University, Nuctech Company LimitedInventors: Yuanjing Li, Bing Feng, Ziran Zhao, Yingxin Wang, Dongmei Yu
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Publication number: 20090323057Abstract: The present invention relates to a Raman spectroscopy system that includes a detection center. The detection center includes at least one light source for outputting exciting light which excites a detected object to generate Raman scattered light, and an analysis device for obtaining the Raman spectroscopy of the detected object. The Raman spectroscopy system further includes at least one detection terminal, each of which includes at least one Raman probe that each introduces the exciting light to the detected object, collects the Raman scattered light generated by the detected object, and returns said Raman scattered light to the detection center. The present invention also relates to a method for detecting Raman spectroscopy.Type: ApplicationFiled: June 26, 2009Publication date: December 31, 2009Inventors: Zhiqiang CHEN, Li ZHANG, Yuanjing LI, Yinong LIU, Ziran ZHAO, Mingliang LI, Hongfeng GAI, Hongqiu WANG, Dongmei YU
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Publication number: 20080157750Abstract: Disclosed are a method and an apparatus for measuring terahertz time-domain spectrum, which relate to the field of terahertz time-domain spectrum. The method comprises the steps of: generating a first pulse laser beam from a first femtosecond laser device at a preset repetition frequency to generate THz pulses; generating a second pulse laser beam from a second femtosecond laser device at the repetition frequency; measuring electric field intensities of the THz pulses at respective phase differences between the first pulse laser beam and the second pulse laser beam; and obtaining a THz time-domain spectroscopy by performing Fourier transformation of data representative of the electric field intensities. Compared with prior art, THz spectrum measured according to the method and apparatus of present invention has higher spectroscopy resolution and broader detection range, which makes the technology of present invention have stronger capability for discriminating substances.Type: ApplicationFiled: December 26, 2007Publication date: July 3, 2008Inventors: Yuanjing LI, Bing Feng, Ziran Zhao, Yingxin Wang, Dongmei Yu