Patents by Inventor Kemin Wang

Kemin Wang 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).

  • Publication number: 20200150386
    Abstract: The disclosure provides an optical lens system and a vehicle camera. From an object side to an imaging surface, the optical lens system sequentially includes a first lens having a negative refractive power; a second lens having a positive refractive power; a third lens having a positive refractive power; a fourth lens having a positive refractive power; a fifth lens having a negative refractive power, the fourth lens and the fifth lens constituting a cemented lens; a sixth lens having a positive refractive power; a seventh lens with a negative refractive power; a stop disposed between the first lens and the third lens. The lens of the present disclosure not only has thermal stability, but also has extremely high resolution for the objects that emit or reflect monochromatic lights of different wavelengths, so as to meet the requirements of the driverless vehicle system on the lens.
    Type: Application
    Filed: January 15, 2020
    Publication date: May 14, 2020
    Inventors: WENZHE WEI, YUMIN BAO, WEIJIAN CHEN, XUMING LIU, JIYONG ZENG, KEMIN WANG
  • Publication number: 20200150399
    Abstract: The present disclosure provides a lens module, a camera, and a driver assistant system. From an object side to an image side, the lens module sequentially includes a first lens with a negative refractive power, a second lens with a negative refractive power, a third lens with a positive refractive power, a stop, a fourth lens with a positive refractive power, a fifth lens with a negative refractive power, a sixth lens with a positive refractive power, and a filter. The fifth lens and the fourth lens constitute a bonding lens group. The second lens, the third lens, the fourth lens, and the fifth lens are glass spherical lenses, and the first lens and the sixth lens are both glass aspherical lenses. The lens module significantly increases the distortion in a small FOV to meet the special algorithm requirements of an in-vehicle system.
    Type: Application
    Filed: January 15, 2020
    Publication date: May 14, 2020
    Inventors: WEIJIAN CHEN, YUMIN BAO, XUMING LIU, JIYONG ZENG, KEMIN WANG, ZHUO WANG
  • Publication number: 20200137151
    Abstract: A distributed computing system including a load balancing engine is disclosed. The load balancing engine includes: a load information management module for obtaining global load information of the system; a service information management module for obtaining global service information of the system; a policy computing module for performing load balancing computing for a first service type by using the global load information and the global service information, to generate a first load balancing policy corresponding to the first service type; and a policy release module for releasing the first load balancing policy to a client.
    Type: Application
    Filed: December 23, 2019
    Publication date: April 30, 2020
    Inventors: Jianchun CHI, Wei ZHENG, Kemin WANG
  • Publication number: 20200124825
    Abstract: A collimator lens system includes a first lens, a second lens, a third lens and a diaphragm from an object side to an image side of the system in turn along an optical axis, in which the first lens is of a positive focal power, and an object side surface thereof is convex; the second lens is of a negative focal power; the third lens is of a positive focal power, and an image side surface thereof is convex; optical centers of all the lenses are arranged along a same straight line, the system meets following formulas: f12>f3; (dn/dt)1<-50×10?6/° C.; (dn/dt)2<-50×10?6/° C.; (dn/dt)3>-10×10?6/° C., where f12 represents a combined focal length of the first and second lenses, f3 represents a focal length of the third lens, and (dn/dt)1, (dn/dt)2, and (dn/dt)3 represent change rates of refractive indices of the first lens, the second lens and the third lens with temperature, respectively.
    Type: Application
    Filed: April 2, 2018
    Publication date: April 23, 2020
    Inventors: Xuming LIU, Kemin WANG, Jiyong ZENG, Haojie ZENG, Yumin BAO, Weijian CHEN
  • Patent number: 10488674
    Abstract: A collimator lens includes a first lens, a second lens and a diaphragm from an object side to an image side of the assembly in turn along an optical axis, in which the first lens is of a positive focal power, and an object side surface thereof is convex; the second lens is of a positive focal power, and an image side surface thereof is convex; optical centers of the first lens and the second lens are arranged along a same straight line, the system meets following formulas: f1>f2; (dn/dt)1<?50×10?6/° C.; (dn/dt)2>?10×10?6/° C., where f1 represents a focal length of the first lens, f2 represents a focal length of the second lens, (dn/dt)1 represents a change rate of a refractive index of the first lens with temperature, and (dn/dt)2 represents a change rate of a refractive index of the second lens with temperature.
    Type: Grant
    Filed: April 2, 2018
    Date of Patent: November 26, 2019
    Assignee: JIANGXI LIANCHUANG ELECTRONIC CO., LTD.
    Inventors: Xuming Liu, Kemin Wang, Jiyong Zeng, Haojie Zeng, Yumin Bao, Weijian Chen
  • Publication number: 20190250422
    Abstract: A collimator lens includes a first lens, a second lens and a diaphragm from an object side to an image side of the assembly in turn along an optical axis, in which the first lens is of a positive focal power, and an object side surface thereof is convex; the second lens is of a positive focal power, and an image side surface thereof is convex; optical centers of the first lens and the second lens are arranged along a same straight line, the system meets following formulas: f1>f2; (dn/dt)1<?50×10?6/° C.; (dn/dt)2>?10×10?6/° C., where f1 represents a focal length of the first lens, f2 represents a focal length of the second lens, (dn/dt)1 represents a change rate of a refractive index of the first lens with temperature, and (dn/dt)2 represents a change rate of a refractive index of the second lens with temperature.
    Type: Application
    Filed: April 2, 2018
    Publication date: August 15, 2019
    Inventors: Xuming LIU, Kemin WANG, Jiyong ZENG, Haojie ZENG, Yumin BAO, Weijian CHEN
  • Patent number: 8883994
    Abstract: A switch mode nucleic acid aptamer probe includes a probe main body, a fluorescence generating unit and a fluorescence quenching unit which are respectively connected to two ends of the probe main body. The probe main body includes a nucleic acid aptamer fragment with a function of specifically recognizing target tumor cell and a nucleic acid fragment linked to the nucleic acid aptamer fragment by a connection fragment with a length of 7˜15 nm so as to form a hairpin structure. The ability of competitive hybridization of the nucleic acid fragment with the nucleic acid aptamer fragment is weaker than that of the target tumor cell. The use of the probe of the invention can be at least one of specific detection of tumor living cell in buffer solution, effective detection of tumor living cell in serum, and real-time fluorescence imaging and intravital detection of tumor in living body.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: November 11, 2014
    Assignee: Hunan University
    Inventors: Kemin Wang, Hui Shi, Xiaoxiao He, Xiaosheng Ye, Xu Wu, Qiuping Guo, Bing Zhou
  • Publication number: 20130251638
    Abstract: The present invention relates to nucleic acid-based detection field, in particularly to a switchable nucleic acid aptamer probe and use thereof. The switchable nucleic acid aptamer probe includes a probe main body as well as a fluorescence generating unit and a fluorescence quenching unit which are respectively connected to two ends of the probe main body. The probe main body includes a nucleic acid aptamer fragment with a function of specifically recognizing target tumor cell and a nucleic acid fragment partially complemented with the nucleic acid aptamer fragment. The nucleic acid aptamer fragment and the nucleic acid fragment are linked by a connection fragment with a length of 7˜15 nm so as to form a hairpin structure. The ability of competitive hybridization of the nucleic acid fragment with the nucleic acid aptamer fragment is weaker than that of the target tumor cell.
    Type: Application
    Filed: March 22, 2011
    Publication date: September 26, 2013
    Applicant: HUNAN UNIVERSITY
    Inventors: Kemin Wang, Hui Shi, Xiaoxiao He, Xiaosheng Ye, Xu Wu, Qiuping Guo, Bing Zhou