Patents by Inventor Da Guan

Da Guan 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).

  • Lens, camera, package inspection system and image processing method
    Patent number: 10386632
    Abstract: The present application discloses a lens, camera, package inspection system and image processing method. The lens comprises an optical lens and a photosensitive chip, and further comprises an optical filter comprising a first filter portion and a second filter portion and disposed between the optical lens and the photosensitive chip, wherein a first object point is imaged on the photosensitive chip through the optical lens and the first filter portion, and a second object point is imaged on the photosensitive chip through the optical lens and the second filter portion, the first filter portion having a thickness greater than that of the second filter portion. The technical problem of a lens in relevant art having a relatively small DOF is solved by the present application.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: August 20, 2019
    Assignee: Hangzhou Hikrobot Technology Co., Ltd
    Inventors: Pinjiang He, Yong Zhu, Wencong Zhang, Mingqiang Xie, Da Guan, Zhenhua Zhang
  • LENS, CAMERA, PACKAGE INSPECTION SYSTEM AND IMAGE PROCESSING METHOD
    Publication number: 20180284429
    Abstract: The present application discloses a lens, camera, package inspection system and image processing method. The lens comprises an optical lens and a photosensitive chip, and further comprises an optical filter comprising a first filter portion and a second filter portion and disposed between the optical lens and the photosensitive chip, wherein a first object point is imaged on the photosensitive chip through the optical lens and the first filter portion, and a second object point is imaged on the photosensitive chip through the optical lens and the second filter portion, the first filter portion having a thickness greater than that of the second filter portion. The technical problem of a lens in relevant art having a relatively small DOF is solved by the present application.
    Type: Application
    Filed: July 20, 2016
    Publication date: October 4, 2018
    Inventors: Pinjiang He, Yong Zhu, Wencong Zhang, Mingqiang Xie, Da Guan, Zhenhua Zhang