Patents by Inventor Qinfeng XU

Qinfeng XU 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: 20240085702
    Abstract: An augmented reality display device (100), comprising: a light engine (102) for emitting image light; and at least one layer of optical waveguide lens (101) comprising an in-coupling grating region (1012), an optical waveguide substrate (1011) and a turning and out-coupling grating region (1013), wherein the in-coupling grating region (1012) is disposed on a first optical surface of the optical waveguide substrate (1011); the optical waveguide substrate (1011) is configured to transmit the image light through total reflection; the turning and out-coupling grating region (1013) is disposed on the first optical surface of the optical waveguide substrate (1011) for receiving totally reflected light and coupling it out; and a sum of the in-coupling grating vector and the turning and out-coupling grating vectors is not zero, wherein the in-coupling angles of the light engine (102) and the respective layers of optical waveguide lenses (101) are identical.
    Type: Application
    Filed: December 17, 2021
    Publication date: March 14, 2024
    Applicant: NINGBO SUNNY OPOTECH CO., LTD.
    Inventors: Keqi MA, Yiqi WANG, Qinfeng XU
  • Patent number: 11634759
    Abstract: The present disclosure discloses a real-time fluorescence quantitative polymerase chain reaction (PCR) detection method and kit based on a metal ruthenium complex. The present disclosure is capable of establishing the detection method for performing a real-time fluorescence quantitative PCR by using the metal ruthenium complex as fluorescence dye.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: April 25, 2023
    Assignee: SHAANXI UNIVERSITY OF SCIENCE & TECHNOLOGY
    Inventors: Qinfeng Xu, Jing Dong, Hongxin Song, Jianlan Liu
  • Publication number: 20210348223
    Abstract: The present disclosure discloses a real-time fluorescence quantitative polymerase chain reaction (PCR) detection method and kit based on a metal ruthenium complex. The present disclosure is capable of establishing the detection method for performing a real-time fluorescence quantitative PCR by using the metal ruthenium complex as fluorescence dye.
    Type: Application
    Filed: June 21, 2019
    Publication date: November 11, 2021
    Inventors: Qinfeng XU, Jing DONG, Hongxin SONG, Jianlan LIU