Patents by Inventor JI-PENG LIU

JI-PENG LIU 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).

  • DIFFRACTIVE OPTICAL STRUCTURE AND A STRUCTURED LIGHT PROJECTION DEVICE HAVING THE SAME
    Publication number: 20210181390
    Abstract: A diffractive optical structure achieving high resolution to facilitate face recognition includes a first diffractive element and a second diffractive element. The first diffractive element includes first grating structures and the second diffractive element comprises second grating structures. The second grating structures each face and are spaced apart from the first grating structures, an adhesive with certain optical properties is infilled between the first grating structure and the second grating structure.
    Type: Application
    Filed: January 3, 2020
    Publication date: June 17, 2021
    Inventors: JI-PENG LIU, CHUN-HUNG CHEN