Patents by Inventor Qingfu WU

Qingfu WU 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: 20230046945
    Abstract: A Fresnel lens mold is disclosed, comprising stacked bendable strips. An optical structure is provided on one edge of each strip, which is the same as a lens structure on a corresponding endless strip of a Fresnel lens. A manufacturing method for the Fresnel lens mold comprises: designing a Fresnel lens according to an optical characteristic requirement, selecting bendable strips, processing, on one edge of each strip, an optical structure that is the same as a lens structure on a corresponding endless strip of the Fresnel lens, and according to the position of the endless strip of the Fresnel lens and the orientation of the lens structure on the endless strip, stacking the strip on which the optical structure is processed, so as to obtain the Fresnel lens model. Further provided is a method for manufacturing a Fresnel lens by using the foregoing Fresnel lens mold.
    Type: Application
    Filed: November 11, 2020
    Publication date: February 16, 2023
    Applicant: CHENGDU FSCREEN SCI-TECH CO., LTD
    Inventors: Yimin ZHANG, Zhichao CHEN, Shijia HU, Qingfu WU