Patents by Inventor Michael A. Cheponis

Michael A. Cheponis 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).

  • Liquid crystal variable drive voltage
    Patent number: 9958712
    Abstract: A voltage may be provided to a liquid crystal addressable element as part of a liquid crystal device. The provided voltage may be reduced from a driven state to a relaxed state in a time period greater than 1 ?s. The reduction may further be performed in less than 20 ms. The liquid crystal device may be a polarization switch, which in some embodiments may be a multi-segment polarization switch. In one embodiment, pulses of limited duration of a light source may be provided to the polarization switch. The manner of voltage reduction may reduce optical bounce of the liquid crystal device and may allow one or more of the pulses of the light source to be shifted later in time.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: May 1, 2018
    Assignee: zSpace, Inc.
    Inventors: David A. Chavez, Michael A. Cheponis, Mark F. Flynn
  • Liquid Crystal Variable Drive Voltage
    Publication number: 20150370111
    Abstract: A voltage may be provided to a liquid crystal addressable element as part of a liquid crystal device. The provided voltage may be reduced from a driven state to a relaxed state in a time period greater than 1 ?s. The reduction may further be performed in less than 20 ms. The liquid crystal device may be a polarization switch, which in some embodiments may be a multi-segment polarization switch. In one embodiment, pulses of limited duration of a light source may be provided to the polarization switch. The manner of voltage reduction may reduce optical bounce of the liquid crystal device and may allow one or more of the pulses of the light source to be shifted later in time.
    Type: Application
    Filed: August 27, 2015
    Publication date: December 24, 2015
    Inventors: David A. Chavez, Michael A. Cheponis, Mark F. Flynn
  • Liquid crystal variable drive voltage
    Patent number: 9134556
    Abstract: A voltage may be provided to a liquid crystal addressable element as part of a liquid crystal device. The provided voltage may be reduced from a driven state to a relaxed state in a time period greater than 1 ?s. The reduction may further be performed in less than 20 ms. The liquid crystal device may be a polarization switch, which in some embodiments may be a multi-segment polarization switch. In one embodiment, pulses of limited duration of a light source may be provided to the polarization switch. The manner of voltage reduction may reduce optical bounce of the liquid crystal device and may allow one or more of the pulses of the light source to be shifted later in time.
    Type: Grant
    Filed: July 18, 2014
    Date of Patent: September 15, 2015
    Assignee: zSpace, Inc.
    Inventors: David A. Chavez, Michael A. Cheponis, Mark F. Flynn
  • Liquid Crystal Variable Drive Voltage
    Publication number: 20140327850
    Abstract: A voltage may be provided to a liquid crystal addressable element as part of a liquid crystal device. The provided voltage may be reduced from a driven state to a relaxed state in a time period greater than 1 ?s. The reduction may further be performed in less than 20 ms. The liquid crystal device may be a polarization switch, which in some embodiments may be a multi-segment polarization switch. In one embodiment, pulses of limited duration of a light source may be provided to the polarization switch. The manner of voltage reduction may reduce optical bounce of the liquid crystal device and may allow one or more of the pulses of the light source to be shifted later in time.
    Type: Application
    Filed: July 18, 2014
    Publication date: November 6, 2014
    Inventors: David A. Chavez, Michael A. Cheponis, Mark F. Flynn
  • Liquid crystal variable drive voltage
    Patent number: 8786529
    Abstract: A voltage may be provided to a liquid crystal addressable element as part of a liquid crystal device. The provided voltage may be reduced from a driven state to a relaxed state in a time period greater than 1 ?s. The reduction may further be performed in less than 20 ms. The liquid crystal device may be a polarization switch, which in some embodiments may be a multi-segment polarization switch. In one embodiment, pulses of limited duration of a light source may be provided to the polarization switch. The manner of voltage reduction may reduce optical bounce of the liquid crystal device and may allow one or more of the pulses of the light source to be shifted later in time.
    Type: Grant
    Filed: May 18, 2011
    Date of Patent: July 22, 2014
    Assignee: zSpace, Inc.
    Inventors: David A. Chavez, Michael A. Cheponis, Mark F. Flynn