Patents by Inventor Yanfeng Fu
Yanfeng Fu 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: 20240074665Abstract: An electronic device includes a housing defining an internal volume, a front opening, and a rear opening. The electronic device can include a display component disposed at the front opening and a rear cover disposed at the rear opening. A logic board can be disposed in the internal volume. The device can also include a thin film thermopile including a cold junction bonded to the logic board and a hot junction bonded to the rear cover.Type: ApplicationFiled: December 28, 2022Publication date: March 7, 2024Inventors: Daniel J. Hiemstra, Jeffrey W. Buchholz, Xiaofan Niu, James C. Clements, Wei Lin, Habib S. Karaki, Paul Mansky, Boyi Fu, Yanfeng Chen, Edmilson Besseler
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Patent number: 11700830Abstract: A pig production method by using a detachable and washable wet curtain for intensive pig farming The detachable and washable wet curtain includes a wet curtain mounting frame (1), a spray tube (4), a plurality of rotatable reels (7) equivalent to sleeves, a reel (6) with a buckle, a wet curtain net (8), a reel (10) with a buckle, and a manual handle (9). The wet curtain is formed by a low-cost common material, namely a plastic net and the like, is convenient to mount, detach, and wash, and is not prone to making dust, scale, algae, mosquitos, and the like accumulate thereon, thus reducing the replacement cost and use cost. Therefore, a new cooling method based on the wet curtain is provided for pig farms in summer, and it is also suitable for other livestock farms in summer.Type: GrantFiled: December 27, 2020Date of Patent: July 18, 2023Assignee: JIANGSU ACADEMY OF AGRICULTURAL SCIENCESInventors: Shouwen Ren, Xuemin Wang, Xiaomin Fang, Bixia Li, Yanfeng Fu, Weimin Zhao, Xiaobo Xu, Li Wang, Feng Tu, Guotai Wu
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Publication number: 20210298264Abstract: A pig production method by using a detachable and washable wet curtain for intensive pig farming. The detachable and washable wet curtain includes a wet curtain mounting frame (1), a spray tube (4), a plurality of rotatable reels (7) equivalent to sleeves, a reel (6) with a buckle, a wet curtain net (8), a reel (10) with a buckle, and a manual handle (9). The wet curtain is formed by a low-cost common material, namely a plastic net and the like, is convenient to mount, detach, and wash, and is not prone to making dust, scale, algae, mosquitos, and the like accumulate thereon, thus reducing the replacement cost and use cost. Therefore, a new cooling method based on the wet curtain is provided for pig farms in summer, and it is also suitable for other livestock farms in summer.Type: ApplicationFiled: December 27, 2020Publication date: September 30, 2021Inventors: Shouwen Ren, Xuemin Wang, Xiaomin Fang, Bixia Li, Yanfeng Fu, Weimin Zhao, Xiaobo Xu, Li Wang, Feng Tu, Guotai Wu
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Patent number: 10451805Abstract: The present invention provides a wavelength division multiplexing/demultiplexing optical transceiving assembly based on a diffraction grating, which is an uplink optical emitting unit and a downlink optical receiving unit that comprise a laser chip array, a light receiving detector array, a first fast axis collimating lens, a second fast axis collimating lens, a first slow axis collimating lens, a diffraction grating, a slow axis focusing lens, a second slow axis collimating lens, an optical isolator, a coupling output lens, a coupling input lens, a coupling outputting optical fiber and a coupling inputting optical fiber.Type: GrantFiled: December 28, 2015Date of Patent: October 22, 2019Assignee: WUHAN TELECOMMUNICATION DEVICES CO., LTDInventors: Xuesheng Tang, Di Zhang, Shenglei Hu, Yongan Fu, Yanfeng Fu, Chenggang Liu, Shiyu Li, Liping Sun, Weidong Ma
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Patent number: 10416379Abstract: An arrayed waveguide grating based hybrid integrated laser has an adjustable external cavity. The waveguide includes a semiconductor gain die and an optical waveguide chip. The optical waveguide chip includes an arrayed waveguide grating and an arrayed waveguide reflection-controllable component. A resonant cavity is formed by the output end reflection-controllable arrayed waveguide grating chip and the semiconductor gain die. An output wavelength of the laser can be adjusted by changing a driving condition of the reflection-controllable component. The output wavelength is determined by a center wavelength of each channel of the arrayed waveguide grating.Type: GrantFiled: December 29, 2014Date of Patent: September 17, 2019Assignee: Accelink Technologies Co., Ltd.Inventors: Yanfeng Fu, Kun Qian, Di Zhang, Xuesheng Tang, Shenglei Hu, Yi Tang, Di Li, Weidong Ma, Qianggao Hu
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Patent number: 10256606Abstract: A wavelength-tunable external cavity laser comprises a semiconductor optical amplifier chip and a laser external cavity, the laser external cavity comprising a grid filter, a phase adjustor and a silicon-based micro-ring chip, the grid filter and the silicon-based micro-ring chip constituting a wavelength-tunable optical filter which implements wavelength tuning by spectral tuning of the grid filter and/or the silicon-based micro-ring chip. A micro-ring filter in the silicon-based micro-ring chip of the tunable external-cavity laser is manufactured by adopting a mature silicon light technology, which can greatly reduce a manufacturing difficulty of the adjustable filter, and reduce the manufacturing cost of a device. An existing external-cavity adjustable technology platform may be used for smooth transition, so as to improve the degree of integration of this type of device and simplify a preparation process.Type: GrantFiled: December 15, 2015Date of Patent: April 9, 2019Assignee: Accelink Technologies Co., Ltd.Inventors: Shenglei Hu, Yanfeng Fu, Yi Tang, Di Zhang, Shiyu Li, Xuesheng Tang, Kun Qian, Weidong Ma, Qianggao Hu
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Patent number: 10145731Abstract: A performance testing device for a multi-channel tunable laser, comprising a collimating and coupling lens, a first beam splitter, a power testing unit, a side-mode suppression ratio testing unit, a wavelength testing unit and a control and drive unit, the power testing unit being positioned in a reflection path of the first beam splitter, the wavelength testing unit being positioned in a transmission path of the first beam splitter, the side-mode suppression ratio testing unit being positioned in a reflection path of the second beam splitter, the control and drive unit being in a control connection with the power testing unit, the side-mode suppression ratio testing unit and the wavelength testing unit. The performance testing device has a simple structure, a low cost, and is convenient to use.Type: GrantFiled: December 15, 2015Date of Patent: December 4, 2018Assignee: Accelink Technologies Co., Ltd.Inventors: Kun Qian, Yanfeng Fu, Xuesheng Tang, Yi Tang, Yizong Chen, Di Zhang, Shenglei Hu, Weidong Ma
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Publication number: 20180314006Abstract: The present invention provides a wavelength division multiplexing/demultiplexing optical transceiving assembly based on a diffraction grating, which is an uplink optical emitting unit and a downlink optical receiving unit that comprise a laser chip array, a light receiving detector array, a first fast axis collimating lens, a second fast axis collimating lens, a first slow axis collimating lens, a diffraction grating, a slow axis focusing lens, a second slow axis collimating lens, an optical isolator, a coupling output lens, a coupling input lens, a coupling outputting optical fiber and a coupling inputting optical fiber.Type: ApplicationFiled: December 28, 2015Publication date: November 1, 2018Inventors: Xuesheng TANG, Di ZHANG, Shenglei HU, Yongan FU, Yanfeng FU, Chenggang LIU, Shiyu LI, Liping SUN, Weidong MA
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Patent number: 10050406Abstract: The present invention relates to an external cavity tunable laser and a cavity mode locking method thereof. In an embodiment, an external cavity tunable laser comprises a semiconductor amplifier having a partial reflective film provided on one end and an anti-reflective film provided on the other end, a cavity mirror provided at the anti-reflective end to define an external cavity therebetween, a large-range phasing assembly and a quick phasing assembly provided to adjust the optical length of the external cavity independently, an optical power detector provided to detect the optical power of the light output from the semiconductor amplifier, and a control unit in communication with the optical power detector, the large-range phasing assembly, and the quick phasing assembly.Type: GrantFiled: March 16, 2017Date of Patent: August 14, 2018Assignee: Accelink Technologies Co., Ltd.Inventors: Xuesheng Tang, Yanfeng Fu, Kun Qian, Yong Luo, Yizong Chen, Di Zhang, Qianggao Hu, Yi Tang, Chao Luo
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Publication number: 20180216995Abstract: A performance testing device for a multi-channel tunable laser, comprising a collimating and coupling lens, a first beam splitter, a power testing unit, a side-mode suppression ratio testing unit, a wavelength testing unit and a control and drive unit, the power testing unit being positioned in a reflection path of the first beam splitter, the wavelength testing unit being positioned in a transmission path of the first beam splitter, the side-mode suppression ratio testing unit being positioned in a reflection path of the second beam splitter, the control and drive unit being in a control connection with the power testing unit, the side-mode suppression ratio testing unit and the wavelength testing unit.Type: ApplicationFiled: December 15, 2015Publication date: August 2, 2018Applicant: Accelink Technologies Co., Ltd.Inventors: Kun Qian, Yanfeng Fu, Xuesheng Tang, Yi Tang, Yizong Chen, Di Zhang, Shenglei Hu, Weidong Ma
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Publication number: 20180191132Abstract: A wavelength-tunable external cavity laser comprises a semiconductor optical amplifier chip and a laser external cavity, the laser external cavity comprising a grid filter, a phase adjustor and a silicon-based micro-ring chip, the grid filter and the silicon-based micro-ring chip constituting a wavelength-tunable optical filter which implements wavelength tuning by spectral tuning of the grid filter and/or the silicon-based micro-ring chip. A micro-ring filter in the silicon-based micro-ring chip of the tunable external-cavity laser is manufactured by adopting a mature silicon light technology, which can greatly reduce a manufacturing difficulty of the adjustable filter, and reduce the manufacturing cost of a device. An existing external-cavity adjustable technology platform may be used for smooth transition, so as to improve the degree of integration of this type of device and simplify a preparation process.Type: ApplicationFiled: December 15, 2015Publication date: July 5, 2018Applicant: Accelink Technologies Co., Ltd.Inventors: Shenglei Hu, Yanfeng Fu, Yi Tang, Di Zhang, Shiyu Li, Xuesheng Tang, Kun Qian, Weidong Ma, Qianggao Hu
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Publication number: 20180172907Abstract: An arrayed waveguide grating based hybrid integrated laser has an adjustable external cavity. The waveguide includes a semiconductor gain die and an optical waveguide chip. The optical waveguide chip includes an arrayed waveguide grating and an arrayed waveguide reflection-controllable component. A resonant cavity is formed by the output end reflection-controllable arrayed waveguide grating chip and the semiconductor gain die. An output wavelength of the laser can be adjusted by changing a driving condition of the reflection-controllable component. The output wavelength is determined by a center wavelength of each channel of the arrayed waveguide grating.Type: ApplicationFiled: December 29, 2014Publication date: June 21, 2018Applicant: Accelink Technologies Co., Ltd.Inventors: Yanfeng Fu, Kun Qian, Di Zhang, Xuesheng Tang, Shenglei Hu, Yi Tang, Di Li, Weidong Ma, Qianggao Hu
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Patent number: 9991954Abstract: Disclosed is a method for monitoring the wavelength of a tunable laser device of user by local OLT. The method is applied to a wavelength division multiplexing passive optical network framework. The framework comprises an ONU, a first athermal array waveguide grating, a transmission optical fiber, a second athermal array waveguide grating and the OLT, which are sequentially connected. ONU comprises tunable wavelength optical transmitters. The method comprises: starting handshaking is carried out between the OLT and the ONU; and the OLT carries out wavelength drifting monitoring during operation of the ONU. Wavelength adjustment can be carried out on the multi-channel tunable laser device in an external auxiliary monitoring environment, thus channel wavelengths of the multi-channel tunable laser device can be accurately controlled, and the requirement for calibration accuracy of channels of the tunable laser device at the ONU is greatly reduced.Type: GrantFiled: March 31, 2014Date of Patent: June 5, 2018Assignee: Accelink Technologies Co., Ltd.Inventors: Yanfeng Fu, Qianggao Hu, Di Zhang, Shenglei Hu, Yong Luo
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Patent number: 9912120Abstract: A Raman pump laser control apparatus comprises a wavelength division multiplexer, a tap coupler, a photoelectric detector, an analog amplification processing circuit, an analog-to-digital converter, a fast Raman pump control unit, an digital-analog converter, and a Raman pump laser. The fast Raman pump control unit, after having known anticipated output light power of the Raman pump laser, based on a direct relationship between a current anticipated output light power of the Raman pump laser and input digital quantity that is needed by the digital-analog converter, uses a feedforward control mechanism so that actual output light power of the Raman pump laser fastly approximates the anticipated output light power thereof, and then synchronously combines with a feedback control mechanism so that the actual output light power of the Raman pump laser is precisely locked on the anticipated output light power, thereby achieving fast and precise control of the Raman pump laser.Type: GrantFiled: December 25, 2013Date of Patent: March 6, 2018Assignee: Accelink Technologies Co., Ltd.Inventors: Yanfeng Fu, Yong Luo, Di Zhang, Xuesheng Tang, Kun Qian, Yi Tang, Shenglei Hu, Qianggao Hu
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Patent number: 9897830Abstract: A display panel inspection system and an inspection method for the same are provided. The system includes multiple electrode signal lines located in a display region, each has a starting terminal and an end terminal, multiple fan-out traces connected with the multiple electrode signal lines, multiple electrode signal input terminals connected with the multiple fan-out traces, multiple test pads connected with the multiple electrode signal input terminals, each has an end terminal, a signal transmitter and a signal receiver, wherein the signal transmitter transmits a signal at the starting terminal the electrode signal line, and the signal receiver receives a signal from the end terminal of the electrode signal line or the test pad. Accordingly, an open or short can be detected at the fan-out traces to decrease a light line ratio in the module process to increase the product yield rate.Type: GrantFiled: September 16, 2015Date of Patent: February 20, 2018Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventor: Yanfeng Fu
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Patent number: 9864246Abstract: Disclosed are an array substrate and a display device which belong to the technical field of displays, and are intended to solve the technical problem of large width of the bezel of a liquid crystal display device. The array substrate is provided thereon with a fan-out zone which includes a plurality of conducting lines. At least one of the conducting lines includes a first metal wire and a second metal wire which are serially connected to each other. The second metal wire has a unit resistivity larger than that of the first metal wire. The conducting lines have different lengths, and the second metal wire in a shorter conducting line is longer than the second metal wire in a longer conducting line.Type: GrantFiled: May 22, 2015Date of Patent: January 9, 2018Assignee: Shenzhen China Star Optoelectronics Technology Co., LTd.Inventor: Yanfeng Fu
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Publication number: 20170219856Abstract: A display panel inspection system and an inspection method for the same are provided. The system includes multiple electrode signal lines located in a display region, each has a starting terminal and an end terminal, multiple fan-out traces connected with the multiple electrode signal lines, multiple electrode signal input terminals connected with the multiple fan-out traces, multiple test pads connected with the multiple electrode signal input terminals, each has an end terminal, a signal transmitter and a signal receiver, wherein the signal transmitter transmits a signal at the starting terminal the electrode signal line, and the signal receiver receives a signal from the end terminal of the electrode signal line or the test pad. Accordingly, an open or short can be detected at the fan-out traces to decrease a light line ratio in the module process to increase the product yield rate.Type: ApplicationFiled: September 16, 2015Publication date: August 3, 2017Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventor: Yanfeng FU
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Publication number: 20170192327Abstract: Disclosed are an array substrate and a display device which belong to the technical field of displays, and are intended to solve the technical problem of large width of the bezel of a liquid crystal display device. The array substrate is provided thereon with a fan-out zone which includes a plurality of conducting lines. At least one of the conducting lines includes a first metal wire and a second metal wire which are serially connected to each other. The second metal wire has a unit resistivity larger than that of the first metal wire. The conducting lines have different lengths, and the second metal wire in a shorter conducting line is longer than the second metal wire in a longer conducting line.Type: ApplicationFiled: May 22, 2015Publication date: July 6, 2017Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventor: Yanfeng Fu
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Publication number: 20170187163Abstract: The present invention relates to an external cavity tunable laser and a cavity mode locking method thereof. In an embodiment, an external cavity tunable laser comprises a semiconductor amplifier having a partial reflective film provided on one end and an anti-reflective film provided on the other end, a cavity mirror provided at the anti-reflective end to define an external cavity therebetween, a large-range phasing assembly and a quick phasing assembly provided to adjust the optical length of the external cavity independently, an optical power detector provided to detect the optical power of the light output from the semiconductor amplifier, and a control unit in communication with the optical power detector, the large-range phasing assembly, and the quick phasing assembly.Type: ApplicationFiled: March 16, 2017Publication date: June 29, 2017Applicant: Accelink Technologies Co., Ltd.Inventors: Xuesheng Tang, Yanfeng Fu, Kun Qian, Yong Luo, Yizong Chen, Di Zhang, Qianggao Hu, Yi Tang, Chao Luo
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Publication number: 20170170898Abstract: Disclosed is a method for monitoring the wavelength of a tunable laser device of user by local OLT. The method is applied to a wavelength division multiplexing passive optical network framework. The framework comprises an ONU, a first athermal array waveguide grating, a transmission optical fiber, a second athermal array waveguide grating and the OLT, which are sequentially connected. ONU comprises tunable wavelength optical transmitters. The method comprises: starting handshaking is carried out between the OLT and the ONU; and the OLT carries out wavelength drifting monitoring during operation of the ONU. Wavelength adjustment can be carried out on the multi-channel tunable laser device in an external auxiliary monitoring environment, thus channel wavelengths of the multi-channel tunable laser device can be accurately controlled, and the requirement for calibration accuracy of channels of the tunable laser device at the ONU is greatly reduced.Type: ApplicationFiled: March 31, 2014Publication date: June 15, 2017Applicant: Accelink Technologies Co., Ltd.Inventors: Yanfeng Fu, Qianggao Hu, Di Zhang, Shenglei Hu, Yong Luo