Patents by Inventor Gennady Medvedkin

Gennady Medvedkin 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).

  • Photodetector with nanowire photocathode
    Patent number: 9818894
    Abstract: A photodetector assembly for ultraviolet and far-ultraviolet detection includes an anode, a microchannel plate with an array of multichannel walls, and a photocathode layer disposed on the microchannel plate. Additionally, the photocathode may include nanowires deposited on a top surface of the array of multichannel walls.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: November 14, 2017
    Assignee: Physical Optics Corporation
    Inventors: Paul Shnitser, Gennady Medvedkin
  • PHOTODETECTOR WITH NANOWIRE PHOTOCATHODE
    Publication number: 20170062637
    Abstract: A photodetector assembly for ultraviolet and far-ultraviolet detection includes an anode, a microchannel plate with an array of multichannel walls, and a photocathode layer disposed on the microchannel plate. Additionally, the photocathode may include nanowires deposited on a top surface of the array of multichannel walls.
    Type: Application
    Filed: September 2, 2016
    Publication date: March 2, 2017
    Applicant: Physical Optics Corporation
    Inventors: Paul Shnitser, Gennady Medvedkin
  • X-ray imaging system and method
    Patent number: 8705694
    Abstract: The present invention provides systems and methods for x-ray imaging. In some embodiments, an aperture, or a plurality thereof, are configured to have image transfer functions lacking a zero within a usable spatial frequency range. In further embodiments, the image transfer function is determined according to the shape of the aperture and the usable spatial frequency range is determined according to a usable signal to noise ratio.
    Type: Grant
    Filed: November 23, 2009
    Date of Patent: April 22, 2014
    Assignee: Physical Optics Corporation
    Inventors: Victor Grubsky, Tomasz Jannson, Edward Matthew Patton, Volodymyr Romanoov, Gennady Medvedkin, Paul Shnitser, Keith Shoemaker
  • X-RAY IMAGING SYSTEM AND METHOD
    Publication number: 20110122994
    Abstract: The present invention provides systems and methods for x-ray imaging. In some embodiments, an aperture, or a plurality thereof, are configured to have image transfer functions lacking a zero within a usable spatial frequency range. In further embodiments, the image transfer function is determined according to the shape of the aperture and the usable spatial frequency range is deter mined according to a usable signal to noise ratio.
    Type: Application
    Filed: November 23, 2009
    Publication date: May 26, 2011
    Inventors: Victor Grubsky, Tomasz Jannson, Edward Matthew Patton, Volodymyr Romanoov, Gennady Medvedkin, Paul Shnitser, Keith Shoemaker
  • Quantum-imaging system and mode of operation and method of fabrication thereof
    Patent number: 7781739
    Abstract: A quantum-imaging system for detecting photons, including short-wavelength (<1 nm) photons, is provided. A quantum imaging system can include optical read-out and optical means, and can be configured to perform as both a photon counter and a photon spectrometer. A quantum-imaging system can function as a photon counter and be configured to measure photon beam fluences (e.g., in J/cm2) for both strong beams and weak beams, the latter ones, for example, in the intensity range of 1 pJ/cm2sec, or 0.1 ?Sv/h. The quantum-imaging system can also function as a photon spectrometer and can be configured to measure photon energies with high energy resolution such as, for example, 1% of photon energy.
    Type: Grant
    Filed: March 13, 2009
    Date of Patent: August 24, 2010
    Assignee: Physical Optics Corporation
    Inventors: Tomasz Jannson, Ranjit Pradhan, Michael Gertsenshteyn, Victor Grubsky, Igor Marienko, Gennady Medvedkin, Wondwosen Mengesha, Volodymyr Romanov, Yunping Yang