Patents by Inventor Benjamin Ung

Benjamin Ung 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).

  • Light modulator using total internal reflection at an interface with a tunable conductive layer
    Patent number: 10197793
    Abstract: A light modulator (e.g., for terahertz radiation) may be constructed using a prism in which light undergoes total internal reflection (TIR) at one surface. A tunable conductive layer is disposed on the TIR surface. The tunable conductive layer can have a conductivity that is dynamically controllable, e.g., by applying a voltage across the tunable conductive layer or by optically pumping the tunable conductive layer. The tunable conductive layer can absorb a portion of the reflected light beam, attenuating the beam, with the attenuation being a function of the electrical conductivity of the tunable conductive layer. The phase of the reflected light beam can also be altered as a function of electrical conductivity of the tunable conductive layer.
    Type: Grant
    Filed: May 8, 2017
    Date of Patent: February 5, 2019
    Assignee: The Chinese University of Hong Kong
    Inventors: Xudong Liu, Zefeng Chen, Edward Philip John Parrott, Benjamin Ung, Jianbin Xu, Emma MacPherson
  • LIGHT MODULATOR USING TOTAL INTERNAL REFLECTION AT AN INTERFACE WITH A TUNABLE CONDUCTIVE LAYER
    Publication number: 20170329127
    Abstract: A light modulator (e.g., for terahertz radiation) may be constructed using a prism in which light undergoes total internal reflection (TIR) at one surface. A tunable conductive layer is disposed on the TIR surface. The tunable conductive layer can have a conductivity that is dynamically controllable, e.g., by applying a voltage across the tunable conductive layer or by optically pumping the tunable conductive layer. The tunable conductive layer can absorb a portion of the reflected light beam, attenuating the beam, with the attenuation being a function of the electrical conductivity of the tunable conductive layer. The phase of the reflected light beam can also be altered as a function of electrical conductivity of the tunable conductive layer.
    Type: Application
    Filed: May 8, 2017
    Publication date: November 16, 2017
    Inventors: Xudong Liu, Zefeng Chen, Edward Philip John Parrott, Benjamin Ung, Jianbin Xu, Emma MacPherson