Patents by Inventor Martin J. BOOTH

Martin J. BOOTH 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).

  • OPTICAL TRANSFORM CHARACTERISATION
    Publication number: 20240049950
    Abstract: A method of determining an optical transform imparted by a multimode optical fibre (300) is disclosed. The wherein the multimode fibre (300) comprises a proximal end, a distal end, and at least one modified region (260) between the proximal end and distal end. The modified region (260) is configured to transmit light toward the proximal end in response to light propagating through the multimode optical fibre (300) from the proximal end to the distal end. The method comprises coupling (101) forward propagating light into the proximal end of the multimode optical fibre; detecting (102), at the proximal end, backward propagating light transmitted from the at least one modified region in response to the forward propagating light; and determining (103) an optical transform from the detected backward propagating light.
    Type: Application
    Filed: December 17, 2021
    Publication date: February 15, 2024
    Inventors: Martin J. BOOTH, Raphael TURCOTTE, Patrick S. SALTER, Julian FELLS
  • Method and apparatus for controlling liquid crystal states
    Patent number: 11391977
    Abstract: A method is disclosed of electrically controlling state transition of a liquid crystal material in a device (200). The device (200) comprises the liquid crystal material (213) and a polymeric structure (210) consisting of polymerised liquid crystal material with a selected liquid crystal state. The method comprises: applying an electric field to the liquid crystal material (213) to force the liquid crystal material (213) into a high-energy state; reducing the strength of the electric field to cause a lower-energy state region of the liquid crystal material (213) to nucleate on at least a part of the polymeric structure (210).
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: July 19, 2022
    Inventors: Chloe C. Tartan, Patrick S. Salter, Martin J. Booth, Steve J. Elston, Stephen M. Morris
  • METHOD AND APPARATUS FOR CONTROLLING LIQUID CRYSTAL STATES
    Publication number: 20200278575
    Abstract: A method is disclosed of electrically controlling state transition of a liquid crystal material in a device (200). The device (200) comprises the liquid crystal material (213) and a polymeric structure (210) consisting of polymerised liquid crystal material with a selected liquid crystal state. The method comprises: applying an electric field to the liquid crystal material (213) to force the liquid crystal material (213) into a high-energy state; reducing the strength of the electric field to cause a lower-energy state region of the liquid crystal material (213) to nucleate on at least a part of the polymeric structure (210).
    Type: Application
    Filed: September 26, 2018
    Publication date: September 3, 2020
    Inventors: Chloe C. TARTAN, Patrick S. SALTER, Martin J. BOOTH, Steve J. ELSTON, Stephen M. MORRIS