Patents by Inventor Lev Dvorkin

Lev Dvorkin 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).

  • Method and apparatus for laser cutting
    Patent number: 9436012
    Abstract: Method and system for laser cutting is disclosed. Using a novel dual-focus optical conversion unit. The dual-focus optical conversion unit may comprise a beam splitter and a convex mirror. The beam splitter may be insensitive to the polarization of an incident beam. The convex mirror may be placed beyond and parallel to the beam splitter, wherein the surface of the convex mirror may be coated with a reflective phase-retarder coating.
    Type: Grant
    Filed: April 18, 2013
    Date of Patent: September 6, 2016
    Assignee: HIGHCON SYSTEMS LTD.
    Inventor: Lev Dvorkin
  • METHOD AND APPARATUS FOR LASER CUTTING
    Publication number: 20130277341
    Abstract: Method and system for laser cutting is disclosed. Using a novel dual-focus optical conversion unit. The dual-focus optical conversion unit may comprise a beam splitter and a convex mirror. The beam splitter may be insensitive to the polarization of an incident beam. The convex mirror may be placed beyond and parallel to the beam splitter, wherein the surface of the convex mirror may be coated with a reflective phase-retarder coating.
    Type: Application
    Filed: April 18, 2013
    Publication date: October 24, 2013
    Applicant: HIGHCON LTD
    Inventor: Lev Dvorkin
  • Apparatus and method for inducing controllable jets in liquids
    Patent number: 8101921
    Abstract: A method for inducing a controllable jet in a transparent liquid is disclosed. The method comprises providing a gas-liquid interface, providing a laser source and generating a beam comprising a sequence of laser pulses, and focusing the beam to a target location within the liquid at a predetermined distance from the gas-liquid interface and creating a plurality of cavitation bubbles, yielding a jet directed away from the gas-liquid interface. Other methods and apparatus are also described and claimed.
    Type: Grant
    Filed: June 4, 2008
    Date of Patent: January 24, 2012
    Assignee: Carl Zeiss SMS Ltd
    Inventors: Sergey Oshemkov, Vladimir Dmitriev, Lev Dvorkin
  • METHOD FOR CREATING, TRAPPING AND MANIPULATING A GAS BUBBLE IN LIQUID
    Publication number: 20110036991
    Abstract: A method for producing, trapping and manipulating a gas microbubble in liquid is disclosed. The method includes providing a pulsed laser source for generating a pulsed laser radiation and focusing optics; and focusing a pulsed laser radiation to a focal zone within the liquid, with energy exceeding the threshold of optical breakdown in the liquid at the focal zone. It is also suggested to use focusing optics to focus the laser beam to a focal point at a depth close to the compensation depth of the focusing optics for spherical aberration.
    Type: Application
    Filed: April 5, 2009
    Publication date: February 17, 2011
    Applicant: PIXER TECHNOLOGY LTD.
    Inventors: Sergey Oshemkov, Lev Dvorkin, Vladimir Dmitriev
  • APPARATUS AND METHOD FOR INDUCING CONTROLLABLE JETS IN LIQUIDS
    Publication number: 20090000665
    Abstract: A method for inducing a controllable jet in a transparent liquid is disclosed. The method comprises providing a gas-liquid interface, providing a laser source and generating a beam comprising a sequence of laser pulses, and focusing the beam to a target location within the liquid at a predetermined distance from the gas-liquid interface and creating a plurality of cavitation bubbles, yielding a jet directed away from the gas-liquid interface. Other methods and apparatus are also described and claimed.
    Type: Application
    Filed: June 4, 2008
    Publication date: January 1, 2009
    Inventors: Sergey OSHEMKOV, Vladimir Dmitriev, Lev Dvorkin