Patents by Inventor Robert Bellini

Robert Bellini 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 shuttering device based on liquid crystals with attenuation of switching noises of said liquid crystals, corresponding viewing goggles and display device
    Patent number: 8817196
    Abstract: An optical shuttering device is provided, which includes an optical cell with a liquid crystal material between first and second transparent substrates and controlled by an electronic switching circuit. The switching circuit includes a power supply module, providing a control voltage, and a switching element mounted in series between the power supply module and the cell, making it possible to switch the cell between an on state and an off state. The electronic switching circuit furthermore includes a current source mounted in series between the power supply module and the switching element. The substrates preferably have different thickness and material.
    Type: Grant
    Filed: November 16, 2009
    Date of Patent: August 26, 2014
    Assignee: Institut Telecom/Telecom Bretagne
    Inventors: Jean-Louis De Bougrenet De La Tocnaye, Bertrand Caillaud, Emmanuel Daniel, Robert Bellini, Olivier Castany
  • OPTICAL SHUTTERING DEVICE BASED ON LIQUID CRYSTALS WITH ATTENUATION OF SWITCHING NOISES OF SAID LIQUID CRYSTALS, CORRESPONDING VIEWING GOGGLES AND DISPLAY DEVICE
    Publication number: 20120038840
    Abstract: An optical shuttering device is provided, which includes an optical cell with a liquid crystal material between first and second transparent substrates and controlled by an electronic switching circuit. The switching circuit includes a power supply module, providing a control voltage, and a switching element mounted in series between the power supply module and the cell, making it possible to switch the cell between an on state and an off state. The electronic switching circuit furthermore includes a current source mounted in series between the power supply module and the switching element. The substrates preferably have different thickness and material.
    Type: Application
    Filed: November 16, 2009
    Publication date: February 16, 2012
    Applicant: INSTITUT TELECOM / TELECOM BRETAGNE
    Inventors: Jean-Louis De Bougrenet De La Tocnaye, Bertrand Caillaud, Emmanuel Daniel, Robert Bellini, Olivier Castany