Patents by Inventor Zichan Wang

Zichan 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: 20240142790
    Abstract: Devices and methods are provided for performing color correction of focal dispersion in high-harmonic lenses. The device comprises a multi-order diffractive engineered surface (MODE) lens comprising a MODE primary lens having height transitions in the front surface that segment it into annular zones and a color corrector comprising a diffractive Fresnel lens (DFL). Polychromatic light passing through the MODE primary lens experiences LCA that is corrected by the color corrector. The color corrector can be configured to correct Type 1 LCA resulting from a combined effect of the DFL and a refractive index change versus wavelength associated with material comprising the device that together produce a change in focus of the polychromatic light, as well as Type 2 LCA resulting from a cyclic variation in focal length versus wavelength caused by the abrupt changes in the height of the front surface of the MODE primary lens at the transitions.
    Type: Application
    Filed: February 5, 2022
    Publication date: May 2, 2024
    Inventors: Thomas D. Milster, Young-Sik Kim, Zichan Wang
  • Publication number: 20230020396
    Abstract: A segmented optical component comprises a multi-order diffractive engineered surface (MODE) lens that is a high-performance ultralightweight optical element that is well suited for use as an efficient large aperture space telescope and other applications. The MODE lens also has the added benefit of reducing the range of focal dispersion versus wavelength, or lateral chromatic dispersion, and off-axis aberration, or zonal field shift (ZFS). The MODE lens can be combined with a DFL. The MODE lens comprises a curved front surface having an M-order diffractive pattern formed therein that segments the MODE lens into Np zones, each comprising a respective zone lens, where Np is greater than or equal to two. Each zone lens operates geometrically as a separate optical element and is separated from an adjacent zone by a transition having a step height.
    Type: Application
    Filed: December 16, 2020
    Publication date: January 19, 2023
    Inventors: Thomas D. Milster, Young-Sik Kim, Zichan Wang
  • Patent number: D1006325
    Type: Grant
    Filed: June 30, 2023
    Date of Patent: November 28, 2023
    Inventor: Zichan Wang
  • Patent number: D1029576
    Type: Grant
    Filed: September 19, 2023
    Date of Patent: June 4, 2024
    Inventor: Zichan Wang