Patents by Inventor Difei Qi

Difei Qi 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: 20240160023
    Abstract: A display element of an optical stack assembly in an augmented reality (AR) near-eye display device may be protected against ultraviolet (UV) and/or infrared (IR) exposure through one or more protective coatings on various surfaces of the elements of the optical stack assembly. A photochromic coating on one of the surfaces of the elements of the optical stack assembly may also be used instead of or in addition to the protective coatings.
    Type: Application
    Filed: September 28, 2023
    Publication date: May 16, 2024
    Applicant: Meta Platforms Technologies, LLC
    Inventors: Kyung Won PARK, Jie LUO, Firmansyah SULEM, Duming Zhang, Kian KERMAN, William CHANG, Chandra Sekhar KAKANI, Erdem ERDEN, Difei QI, Yu SHI, Ningfeng HUANG, Mehmet Emre YAVUZ
  • Publication number: 20220404608
    Abstract: An apparatus comprising (1) a conoscope configured to receive an image emitted by a display device through a corrective lens, (2) a variable compensation element coupled to the conoscope, wherein the variable compensation element is capable of selectively modifying the image emitted by the display device to compensate for an optical effect imparted by the corrective lens on the image, and (3) a controller coupled to the variable compensation element, wherein the controller (1) receives a compensation parameter representative of the optical effect imparted by the corrective lens on the image, (2) selects, based at least in part on the compensation parameter, a feature of the variable compensation element that compensates for the optical effect, and (3) causing the feature of the variable compensation element to be applied to the image. Various other apparatuses, systems, and methods are also disclosed.
    Type: Application
    Filed: April 15, 2022
    Publication date: December 22, 2022
    Inventors: Robin Sharma, Yun-Han Lee, Difei Qi, Konstantin Kudinov
  • Patent number: 9704441
    Abstract: Systems, methods and apparatus, including computer programs encoded on computer storage media, for displaying images with consistent color performance on display devices including display elements that have multiple primary colors under different illumination conditions are described. The systems, methods and apparatus described herein can be configured to select between different sets of primary colors for different illumination conditions.
    Type: Grant
    Filed: February 4, 2015
    Date of Patent: July 11, 2017
    Assignee: SnapTrack, Inc.
    Inventors: Thomas Gerald Fiske, Difei Qi, Shen-Ge Wang
  • Publication number: 20160225326
    Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for displaying images with consistent color performance on display devices including display elements that have multiple primary colors under different illumination conditions. The systems, methods and apparatus described herein can be configured to select between different sets of primary colors for different illumination conditions.
    Type: Application
    Filed: February 4, 2015
    Publication date: August 4, 2016
    Inventors: Thomas Gerald Fiske, Difei Qi, Shen-Ge Wang
  • Patent number: 7887720
    Abstract: Disclosed are compositions including semiconducting polymers and quantum dot nanocrystals. Also disclosed are optoelectronic devices prepared from semiconducting polymers and quantum dot nanocrystals. Also are disclosed methods of increasing the quantum efficiency in optoelectronic devices and methods of generating a photocurrent.
    Type: Grant
    Filed: October 29, 2009
    Date of Patent: February 15, 2011
    Assignees: The Trustees of the University of Pennsylvania, Louisiana Tech University Foundation, Inc.
    Inventors: Marija Drndic, Sandra Zivanovic, Difei Qi
  • Patent number: 7811479
    Abstract: Disclosed are compositions including semiconducting polymers and quantum dot nanocrystals. Also disclosed are optoelectronic devices prepared from semiconducting polymers and quantum dot nanocrystals. Also are disclosed methods of increasing the quantum efficiency in optoelectronic devices and methods of generating a photocurrent.
    Type: Grant
    Filed: February 6, 2006
    Date of Patent: October 12, 2010
    Assignee: The Trustees Of The University Of Pennsylvania
    Inventors: Marija Drndic, Sandra Zivanovic, Difei Qi
  • Publication number: 20100207066
    Abstract: Disclosed are compositions including semiconducting polymers and quantum dot nanocrystals. Also disclosed are optoelectronic devices prepared from semiconducting polymers and quantum dot nanocrystals. Also are disclosed methods of increasing the quantum efficiency in optoelectronic devices and methods of generating a photocurrent.
    Type: Application
    Filed: October 29, 2009
    Publication date: August 19, 2010
    Applicants: THE TRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA, LOUISIANA TECH UNIVERSITY FOUNDATION, INC.
    Inventors: Marija Drndic, Sandra R. Selmic, Difei Qi
  • Publication number: 20070102694
    Abstract: Disclosed are compositions including semiconducting polymers and quantum dot nanocrystals. Also disclosed are optoelectronic devices prepared from semiconducting polymers and quantum dot nanocrystals. Also are disclosed methods of increasing the quantum efficiency in optoelectronic devices and methods of generating a photocurrent.
    Type: Application
    Filed: February 6, 2006
    Publication date: May 10, 2007
    Applicants: Louisiana Tech University Foundation, Inc., The Trustees of the University of Pennsylvania
    Inventors: Marija Drndic, Sandra Selmic, Difei Qi