Patents by Inventor MINGLI DONG
MINGLI DONG 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: 9869587Abstract: A fiber grating demodulation system for enhancing spectral resolution by finely adjusting a linear array detector, includes a laser pump source, a wavelength division multiplexer, a fiber Bragg grating, a diaphragm, a slit, a collimating mirror, a light splitting grating, an imaging focus mirror, a linear array detector. The laser pump source, the wavelength division multiplexer, and the fiber Bragg grating are connected in sequence, the wavelength division multiplexer is connected to the diaphragm. Light emitted from the laser pump source is multiplexed by the wavelength division multiplexer and then enters the fiber Bragg grating, and a reflection spectrum of the fiber Bragg grating enters the slit of the fiber grating demodulation system as injected light. After passing through the slit, the injected light is reflected by the collimating mirror, the light splitting grating, the imaging focus mirror in sequence, and is finally converged to the linear array detector.Type: GrantFiled: October 13, 2016Date of Patent: January 16, 2018Assignee: BEJING INFORMATION SCIENCE & TECHNOLOGY UNIVERSITYInventors: Lianqing Zhu, Wei He, Mingli Dong, Fei Luo, Feng Liu, Xiaoping Lou, Hong Li
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Patent number: 9869588Abstract: A fiber grating demodulation system for enhancing spectral resolution by finely adjusting a slit, includes a laser pump source, a wavelength division multiplexer, a fiber Bragg grating, a diaphragm, a slit, a collimating mirror, a light splitting grating, an imaging focus mirror, and a linear array detector. The laser pump source, the wavelength division multiplexer, the fiber Bragg grating are connected in sequence, and the wavelength division multiplexer is connected to the diaphragm. Light emitted from the laser pump source is multiplexed by the wavelength division multiplexer and then enters the fiber Bragg grating, a reflection spectrum of the fiber Bragg grating enters the slit of the fiber grating demodulation system as injected light. After passing through the slit, the injected light is reflected by the collimating mirror, the light splitting grating, and the imaging focus mirror in sequence, and is finally converged to the linear array detector.Type: GrantFiled: October 13, 2016Date of Patent: January 16, 2018Assignee: BEIJING INFORMATION SCIENCE & TECHNOLOGY UNIVERSITYInventors: Lianqing Zhu, Wei He, Feng Liu, Mingli Dong, Xiaoping Lou, Hong Li, Fei Luo
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Patent number: 9857172Abstract: The present invention provides a method for implementing high-precision orientation and evaluating orientation precision of a large-scale dynamic photogrammetry system, including steps: a) selecting a scale bar, arranging code points at two ends of the scale bar, and performing length measurement on the scale bar; b) evenly dividing a measurement space into multiple regions, sequentially placing the scale bar in each region, and photographing the scale bar by using left and right cameras; d) limiting self-calibration bundle adjustment by using multiple length constraints, adjustment parameters including principal point, principal distance, radial distortion, eccentric distortion, in-plane distortion, exterior orientation parameter and spatial point coordinate; and e) performing traceable evaluation of orientation precision of the photogrammetry system. The present invention can effectively reduce the relative error in length measurement.Type: GrantFiled: September 25, 2017Date of Patent: January 2, 2018Assignee: BEIJING INFORMATION SCIENCE AND TECHNOLOGY UNIVERSITYInventors: Mingli Dong, Peng Sun, Wei Li, Jun Wang, Bixi Yan, Naiguang Lv
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Patent number: 9784619Abstract: A fiber grating demodulation system for enhancing spectral resolution of a detector array, includes a laser pump source, a wavelength division multiplexer, a fiber Bragg grating, a diaphragm, a slit, a collimating mirror, a light splitting grating, an imaging focus mirror, and a linear array detector. The laser pump source, the wavelength division multiplexer, and the fiber Bragg grating are connected in sequence, and the wavelength division multiplexer is connected to the diaphragm. Light emitted from the laser pump source is multiplexed by the wavelength division multiplexer and then enters the fiber Bragg grating. A reflection spectrum of the fiber Bragg grating enters the slit of the fiber grating demodulation system as injected light. After passing through the slit, the injected light is reflected by the collimating mirror. The light splitting grating, and the imaging focus mirror in sequence, and is finally converged to the linear array detector.Type: GrantFiled: October 13, 2016Date of Patent: October 10, 2017Assignee: BEIJING INFORMATION SCIENCE & TECHNOLOGY UNIVERSITYInventors: Lianqing Zhu, Kuo Meng, Fei Luo, Wei He, Feng Liu, Xiaoping Lou, Mingli Dong, Fan Zhang, Hong Li, Wei Zhuang
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Patent number: 9784618Abstract: A fiber grating demodulation system for enhancing spectral resolution by finely adjusting a light splitting grating, includes a laser pump source, a wavelength division multiplexer, a fiber Bragg grating, a diaphragm, a slit, a collimating mirror, a light splitting grating, an imaging focus mirror, and a linear array detector. The laser pump source, the wavelength division multiplexer, the fiber Bragg grating are connected in sequence, the wavelength division multiplexer is connected to the diaphragm. Light emitted from the laser pump source is multiplexed by the wavelength division multiplexer and then enters the fiber Bragg grating, a reflection spectrum of the fiber Bragg grating enters the slit of the fiber grating demodulation system as injected light. After passing through the slit, the injected light is reflected by the collimating mirror, the light splitting grating, and the imaging focus mirror in sequence, and is finally converged to the linear array detector.Type: GrantFiled: October 13, 2016Date of Patent: October 10, 2017Assignee: BEIJING INFORMATION SCIENCE & TECHNOLOGY UNIVERSITYInventors: Lianqing Zhu, Wei He, Feng Liu, Mingli Dong, Xiaoping Lou, Wei Zhuang, Fei Luo
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Patent number: 9781249Abstract: Described is a method and system for displaying an unread message. The method for displaying an unread message includes: pulling an unread message in a lock screen state; and displaying a corresponding unread message application icon on a first active hotspot on a lock screen when an unread message exists, and otherwise, hiding the unread message application icon. The method for previewing an unread message includes: receiving information for activating an unread message application icon in a lock screen state, and displaying a detail entry containing a predetermined number of unread messages on a second active hotspot; dragging the unread message application icon to a third active hotspot to enter into a corresponding application main window, or dragging the unread message application icon to the detail entry to enter into a message window corresponding to the detail entry.Type: GrantFiled: May 20, 2014Date of Patent: October 3, 2017Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITEDInventors: Changhu Peng, Shichao Liu, Haibo Xu, Mingli Dong, Yong Chen
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Patent number: 9683892Abstract: A fiber grating demodulation system for enhancing spectral resolution by finely adjusting an imaging focus mirror, includes a laser pump source, a wavelength division multiplexer, a fiber Bragg grating, a diaphragm, a slit, a collimating mirror, a light splitting grating, an imaging focus mirror, a linear array detector. The laser pump source, the wavelength division multiplexer, the fiber Bragg grating are connected in sequence, the wavelength division multiplexer is connected to the diaphragm. Light emitted from the laser pump source is multiplexed by the wavelength division multiplexer and then enters the fiber Bragg grating, a reflection spectrum of the fiber Bragg grating enters the slit of the fiber grating demodulation system as injected light. After passing through the slit, the injected light is reflected by the collimating mirror, the light splitting grating, and the imaging focus mirror in sequence, and is finally converged to the linear array detector.Type: GrantFiled: October 13, 2016Date of Patent: June 20, 2017Assignee: BEIJING INFORMATION SCIENCE & TECHNOLOGY UNIVERSITYInventors: Lianqing Zhu, Wei He, Xiaoping Lou, Feng Liu, Mingli Dong, Fei Luo, Wei Zhuang
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Publication number: 20170108380Abstract: A fiber grating demodulation system for enhancing spectral resolution by finely adjusting a light splitting grating, includes a laser pump source, a wavelength division multiplexer, a fiber Bragg grating, a diaphragm, a slit, a collimating mirror, a light splitting grating, an imaging focus mirror, and a linear array detector. The laser pump source, the wavelength division multiplexer, the fiber Bragg grating are connected in sequence, the wavelength division multiplexer is connected to the diaphragm. Light emitted from the laser pump source is multiplexed by the wavelength division multiplexer and then enters the fiber Bragg grating, a reflection spectrum of the fiber Bragg grating enters the slit of the fiber grating demodulation system as injected light. After passing through the slit, the injected light is reflected by the collimating mirror, the light splitting grating, and the imaging focus mirror in sequence, and is finally converged to the linear array detector.Type: ApplicationFiled: October 13, 2016Publication date: April 20, 2017Inventors: Lianqing ZHU, Wei HE, Feng LIU, Mingli DONG, Xiaoping LOU, Wei ZHUANG, Fei LUO
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Publication number: 20170108379Abstract: A fiber grating demodulation system for enhancing spectral resolution by finely adjusting a linear array detector, includes a laser pump source, a wavelength division multiplexer, a fiber Bragg grating, a diaphragm, a slit, a collimating mirror, a light splitting grating, an imaging focus mirror, a linear array detector. The laser pump source, the wavelength division multiplexer, and the fiber Bragg grating are connected in sequence, the wavelength division multiplexer is connected to the diaphragm. Light emitted from the laser pump source is multiplexed by the wavelength division multiplexer and then enters the fiber Bragg grating, and a reflection spectrum of the fiber Bragg grating enters the slit of the fiber grating demodulation system as injected light. After passing through the slit, the injected light is reflected by the collimating mirror, the light splitting grating, the imaging focus mirror in sequence, and is finally converged to the linear array detector.Type: ApplicationFiled: October 13, 2016Publication date: April 20, 2017Inventors: Lianqing ZHU, Wei He, Mingli Dong, Fei Luo, Feng Liu, Xiaoping Lou, Hong Li
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Publication number: 20170108378Abstract: A fiber grating demodulation system for enhancing spectral resolution by finely adjusting an imaging focus mirror, includes a laser pump source, a wavelength division multiplexer, a fiber Bragg grating, a diaphragm, a slit, a collimating mirror, a light splitting grating, an imaging focus mirror, a linear array detector. The laser pump source, the wavelength division multiplexer, the fiber Bragg grating are connected in sequence, the wavelength division multiplexer is connected to the diaphragm. Light emitted from the laser pump source is multiplexed by the wavelength division multiplexer and then enters the fiber Bragg grating, a reflection spectrum of the fiber Bragg grating enters the slit of the fiber grating demodulation system as injected light. After passing through the slit, the injected light is reflected by the collimating mirror, the light splitting grating, and the imaging focus mirror in sequence, and is finally converged to the linear array detector.Type: ApplicationFiled: October 13, 2016Publication date: April 20, 2017Inventors: Lianqing Zhu, Wei He, Xiaoping Lou, Feng Liu, Mingli Dong, Fei Luo, Wei Zhuang
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Publication number: 20170102268Abstract: A fiber grating demodulation system for enhancing spectral resolution by finely adjusting a slit, includes a laser pump source, a wavelength division multiplexer, a fiber Bragg grating, a diaphragm, a slit, a collimating mirror, a light splitting grating, an imaging focus mirror, and a linear array detector. The laser pump source, the wavelength division multiplexer, the fiber Bragg grating are connected in sequence, and the wavelength division multiplexer is connected to the diaphragm. Light emitted from the laser pump source is multiplexed by the wavelength division multiplexer and then enters the fiber Bragg grating, a reflection spectrum of the fiber Bragg grating enters the slit of the fiber grating demodulation system as injected light. After passing through the slit, the injected light is reflected by the collimating mirror, the light splitting grating, and the imaging focus mirror in sequence, and is finally converged to the linear array detector.Type: ApplicationFiled: October 13, 2016Publication date: April 13, 2017Inventors: Lianqing ZHU, Wei HE, Feng Liu, Mingli Dong, Xiaoping Lou, Hong Li, Fei Luo
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Publication number: 20170102269Abstract: A fiber grating demodulation system for enhancing spectral resolution of a detector array, includes a laser pump source, a wavelength division multiplexer, a fiber Bragg grating, a diaphragm, a slit, a collimating mirror, a light splitting grating, an imaging focus mirror, and a linear array detector. The laser pump source, the wavelength division multiplexer, and the fiber Bragg grating are connected in sequence, and the wavelength division multiplexer is connected to the diaphragm. Light emitted from the laser pump source is multiplexed by the wavelength division multiplexer and then enters the fiber Bragg grating. A reflection spectrum of the fiber Bragg grating enters the slit of the fiber grating demodulation system as injected light. After passing through the slit, the injected light is reflected by the collimating mirror. The light splitting grating, and the imaging focus mirror in sequence, and is finally converged to the linear array detector.Type: ApplicationFiled: October 13, 2016Publication date: April 13, 2017Inventors: Lianqing ZHU, Kuo Meng, Fei Luo, Wei He, Feng Liu, Xiaoping Lou, Mingli Dong, Fan Zhang, Hong Li, Wei Zhuang
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Patent number: 9574939Abstract: A fiber grating demodulation system for enhancing spectral resolution by finely adjusting a collimating mirror, includes a laser pump source, a wavelength division multiplexer, a fiber Bragg grating, a diaphragm, a slit, a collimating mirror, a light splitting grating, an imaging focus mirror, a linear array detector. The laser pump source, the wavelength division multiplexer, and the fiber Bragg grating are connected in sequence, the wavelength division multiplexer is connected to the diaphragm Light emitted from the laser pump source is multiplexed by the wavelength division multiplexer and then enters the fiber Bragg grating, a reflection spectrum of the fiber Bragg grating enters the slit of the fiber grating demodulation system as injected light. After passing through the slit, the injected light is reflected by the collimating mirror, the light splitting grating, and the imaging focus mirror in sequence, and is finally converged to the linear array detector.Type: GrantFiled: October 13, 2016Date of Patent: February 21, 2017Assignee: BEIJING INFORMATION SCIENCE & TECHNOLOGY UNIVERSITYInventors: Lianqing Zhu, Wei He, Feng Liu, Fei Luo, Mingli Dong, Xiaoping Lou, Fan Zhang
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Publication number: 20150286390Abstract: An automatic skin-replacing method of a music player and system thereof, and a music player and computer-readable storage medium thereof are disclosed. The automatic skin-replacing method of a music player, including: matching a music file in a music player to a corresponding skin; and switching, when the music file being played by the music player, current skin of the music player to the skin matching to the music file. When a music file being played by the music player, current skin of the music player can be switched to a skin matching to the music file by matching the music file in a music player to the corresponding skin, eliminating the need to manually set by a user, which is convenient, and the skin display can be switched depending on the song played, which makes the way for changing skin of the music player more flexible.Type: ApplicationFiled: September 11, 2013Publication date: October 8, 2015Applicant: Tencent Technology (Shenzhen) Company LimitedInventors: Rui Wang, Wei Liu, Mingli Dong, Bo Jiang, Shilei Liu
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Patent number: 9029819Abstract: A gas detection system with an inner ring cavity fiber laser using saturated absorption optical fiber is provided. The system comprising a ring fiber laser consisted of a pump source, a wavelength division multiplexer, a first active optical fiber, a first coupler, a fiber Bragg grating and a second coupler connected successively; an optical isolator coupled between said first active optical fiber and said first coupler; a second active grating connected between said fiber Bragg grating and said first coupler; a detection gas chamber connected between said first coupler and said second coupler; a first photoelectric detector for detecting the laser intensity outputted from said ring fiber laser to generate a first light intensity signal; a second photoelectric detector for receiving the intensity measuring beam passing through the detection gas chamber to generate a second light intensity signal; and a feedback control unit.Type: GrantFiled: October 8, 2014Date of Patent: May 12, 2015Assignee: Beijing Information Science & Technology UniversityInventors: Lianqing Zhu, Fei Luo, Mingli Dong, Wei He, Yinmin Zhang, Xiaochen Meng, Zhehai Zhou
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Patent number: 9016105Abstract: A method for measuring the strain of material using a short cavity fiber laser, includes steps of: a) arranging the short cavity fiber laser, which laser comprises sequentially coupled laser diode pumping source, a wavelength division multiplexer, a fiber bragg grating, an active fiber and a loop mirror; b) fixing the short cavity fiber laser on the material whose strain will be measured, and matching the stretching direction of the fiber of the short cavity fiber laser with the direction of the strain produced by the material to be measured; c) measuring the drift amount of longitudinal mode output by the short cavity fiber laser; and d) calculating and obtaining the strain of the material to be measured.Type: GrantFiled: October 9, 2013Date of Patent: April 28, 2015Assignee: Beijing Information Science & Technology UniversityInventors: Lianqing Zhu, Fei Luo, Wei He, Mingli Dong, Yinmin Zhang, Yudong Jia
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Publication number: 20150102240Abstract: A gas detection system with an inner ring cavity fiber laser using saturated absorption optical fiber is provided. The system comprising a ring fiber laser consisted of a pump source, a wavelength division multiplexer, a first active optical fiber, a first coupler, a fiber Bragg grating and a second coupler connected successively; an optical isolator coupled between said first active optical fiber and said first coupler; a second active grating connected between said fiber Bragg grating and said first coupler; a detection gas chamber connected between said first coupler and said second coupler; a first photoelectric detector for detecting the laser intensity outputted from said ring fiber laser to generate a first light intensity signal; a second photoelectric detector for receiving the intensity measuring beam passing through the detection gas chamber to generate a second light intensity signal; and a feedback control unit.Type: ApplicationFiled: October 8, 2014Publication date: April 16, 2015Inventors: Lianqing Zhu, Fei Luo, Mingli Dong, Wei He, Yinmin Zhang, Xiaochen Meng, Zhehai Zhou
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Publication number: 20150103350Abstract: The present invention provides a fiber laser gas detection system using active feedback compensation by a reference cavity, said system comprising: an optical fiber laser consists of a laser diode pump source, a wavelength division multiplexer, an active optical fiber and a fiber Bragg grating connected successively; an optical isolator coupled with said wavelength division multiplexer for blocking a reverse light transmission in said active fiber; a coupler connected with said optical isolator for dividing the laser light after being isolated by the optical isolator into a reference beam, a detecting beam and an intensity measuring beam according a certain ration power. The gas detection system according to the present invention can take advantages of the unique superiority of compact structure and narrow linewidth of the laser output of the fiber laser, and achieve a gas detection method with high sensitive and high precision by feedback controlling.Type: ApplicationFiled: October 1, 2014Publication date: April 16, 2015Inventors: Fei Luo, Lianqing Zhu, Mingli Dong, Wei He, Yinmin Zhang
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Patent number: 9007594Abstract: The present invention provides a fiber laser gas detection system using active feedback compensation by a reference cavity, said system comprising: an optical fiber laser consists of a laser diode pump source, a wavelength division multiplexer, an active optical fiber and a fiber Bragg grating connected successively; an optical isolator coupled with said wavelength division multiplexer for blocking a reverse light transmission in said active fiber; a coupler connected with said optical isolator for dividing the laser light after being isolated by the optical isolator into a reference beam, a detecting beam and an intensity measuring beam according a certain ration power. The gas detection system according to the present invention can take advantages of the unique superiority of compact structure and narrow linewidth of the laser output of the fiber laser, and achieve a gas detection method with high sensitive and high precision by feedback controlling.Type: GrantFiled: October 1, 2014Date of Patent: April 14, 2015Assignee: Beijing Information Science & Technology UniversityInventors: Fei Luo, Lianqing Zhu, Mingli Dong, Wei He, Yinmin Zhang
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Patent number: 8964185Abstract: A fiber laser gas detection system with a double wavelength combination using reference cavity compensation is provided. The system comprises an optical fiber laser respectively emitting beams having a first and second wavelengths, which consists of a laser diode pump source, a first wavelength division multiplexer, an active optical fiber, a first fiber bragg grating and a second fiber bragg grating connected successively; an optical isolator; a coupler for dividing the beams according to power ratio, the divided beams is introduced into a reference gas chamber and a detecting gas chamber respectively; a second wavelength division multiplexer connecting the reference room and a third wavelength division multiplexer connecting the detecting gas chamber; a first, a second, a third and a fourth photoelectric detector; a feedback control unit, receiving the first to fourth light intensity signals and adjusting the fiber laser using the comparison results as a feedback signal.Type: GrantFiled: October 1, 2014Date of Patent: February 24, 2015Assignee: Beijing Information Science & Technology UniversityInventors: Fei Luo, Lianqing Zhu, Mingli Dong, Wei He, Yinmin Zhang