Patents by Inventor Alexander Efros

Alexander Efros 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).

  • Publication number: 20230091507
    Abstract: A quantum dot (QD)-rhodopsin bioconjugate system uses Förster resonance energy transfer (FRET)-mediated induction of cellular membrane depolarization via optical activation of ion channel proteins channelrhodopsin (ChR).
    Type: Application
    Filed: September 16, 2022
    Publication date: March 23, 2023
    Inventors: Okhil K. Nag, Megan E. Muroski, Michael H. Stewart, Alexander Efros, Scott Walper, James Delehanty, Eunkeu Oh
  • Patent number: 8786846
    Abstract: Method is proposed of angular coordinates determination for observer's head relative to three mutually perpendicular axes of fixed (or tied to an object) coordinate system OXYZ (angle of roll, azimuth, elevation angle) by use of measuring system based on light-sensitive sensor with collimating lens fixed relative to coordinate system and LED lasers installed on head-mounted module HMM. Measuring device registers angular coordinates of narrow pencils of rays formed by LED lasers and provides determination of observer's head angular coordinates in real-time. Three angles of HMM can be determined by proposed method while no less than two LED lasers are in lens field of view with angle ? of set value and direction included between their axes. To provide specified measurement range of observer's head angles exceeding lens field of view LED lasers matrix is installed on HMM containing LED lasers allocated in several horizontal and vertical lines.
    Type: Grant
    Filed: July 5, 2012
    Date of Patent: July 22, 2014
    Inventors: Matvey Lvovskiy, Alexander Efros, Sofya Volfson, Simon Iokhvidson
  • Publication number: 20140009367
    Abstract: Method is proposed of angular coordinates determination for observer's head relative to three mutually perpendicular axes of fixed (or tied to an object) coordinate system OXYZ (angle of roll, azimuth, elevation angle) by use of measuring system based on light-sensitive sensor with collimating lens fixed relative to coordinate system and LED lasers installed on head-mounted module HMM. Measuring device registers angular coordinates of narrow pencils of rays formed by LED lasers and provides determination of observer's head angular coordinates in real-time. Three angles of HMM can be determined by proposed method while no less than two LED lasers are in lens field of view with angle ? of set value and direction included between their axes.
    Type: Application
    Filed: July 5, 2012
    Publication date: January 9, 2014
    Inventors: Matvey Lvovskiy, Alexander Efros, Sofya Volfson, Simon Iokhvidson
  • Patent number: 8305295
    Abstract: Optoelectronic Display System for Transport Vehicles is suggested providing simultaneous representation of visual information of different form and content relating to parameters of driving on windscreen and at dashboard plane. To form said visual information unified image creator based on two LCD matrixes is used and image intended for representation on windscreen in collimated form is created on their upper parts and on lower parts—for representation at dashboard plane. To improve operate reliability the system is provided with control device of image creator operation. In case one of LCDs is out-of-service the device is switching other (operable) LCD into mode of parameters ‘minimum number creation required for safe driving.
    Type: Grant
    Filed: November 23, 2009
    Date of Patent: November 6, 2012
    Inventors: Matvey Lvovskiy, Alexander Efros, Mikhail Lvovsky
  • Publication number: 20120247397
    Abstract: The proposed device allows for the remote control of a comprising mechanical collar simulating the rapid jerking motion of the leash on the neck of an animal subject for training purposes. The device is based on electromagnet fixed on the collar containing a solenoid and core. Under the current pulse the solenoid core is sharply ejected, the tip momentarily presses on the dog's neck as a result, there is a momentary constriction of the collar, similar to the pressure caused by the rapid jerking of a leash as performed in animal training. The remote control of the device is performed by use of radio signal coded pulses from the pulse transmitter that is held by the dog's owner in hands.
    Type: Application
    Filed: March 30, 2011
    Publication date: October 4, 2012
    Inventors: Matvey Lvovskiy, Alexander Falkovsky, Mikhail Lvovsky, Alexander Efros
  • Publication number: 20120127381
    Abstract: The wide-angle Head-Up display design allows the increase in horizontal peripheral field of view and is based on two, three or more unified informational channels with each of them containing axis-symmetric lens collimating optical system and visualizer comprised of more than one LCD-projectors with each of them containing LCD-matrix and tricolor illuminator, projection lens and integrated for all projectors the transparent-diffusive screen intended for representation of primary images and is located at the object-side focal plane of channel collimating optical system and moreover the primary images are located on the screen so that their adjacent horizontal boundaries are stitched with small overlap in order to ensure the uninterrupted representation of resulting image. The channels' axes are horizontally shifted relative to each other so that adjacent boundaries of peripheral fields of view for the neighboring channels are coincided.
    Type: Application
    Filed: November 23, 2010
    Publication date: May 24, 2012
    Inventors: Matvey Lvovskiy, Alexander Efros, Ilya Lipkind
  • Publication number: 20110122049
    Abstract: The Optoelectronic display system relating to automobile and other vehicles is proposed consisting of computer connected with sensors of parameters and certain signals to be represented by the system and display unit installed at place occupied by automobile (or other vehicle) unstrument panel. The display unit is provided with two display canals which are lower and upper and the image of pointer-type devices and navigation map is represented at lower canal by use of projecting or collimating optical systems simultaneously with collimated image of automobile movement parameters, which is represented at its windscreen. In order to perform visual information at the canals the unified image creator based on two LCD matrixes is utilized and the image for upper canal is represented at their upper parts and—for lower canal—at their lower parts. In order to improve its operational reliability the system is provided with device intended for monitoring of image creator functioning.
    Type: Application
    Filed: November 23, 2009
    Publication date: May 26, 2011
    Inventors: Matvey Lvovskiy, Alexander Efros, Mikhail Lvovsky
  • Patent number: 7629877
    Abstract: The present invention relates to indication systems providing augmented visual support for the operator of a motor vehicle, vessel or an aircraft. The indication system is positioned in the location of a traditional vehicular gauge dashboard. The indication system consists of an image formulator and an optical collimator system with two visual channels. Lower channel is used for direct visual tracking of all virtual gauge readings while the upper channel is used to track updates “on the windshield” of a vehicle with the background of the surrounding environment. The lower channel displays virtual collimator imaging of the traditional analog or digital gauges as well as navigational system data. The upper channel is reflected onto the exterior background of the windshield and displays collimator imaged critical data that is required for the safe operation of a vehicle. To provide the switching functionality between the two channels, the indication system utilizes a lightproof partition.
    Type: Grant
    Filed: December 19, 2006
    Date of Patent: December 8, 2009
    Inventors: Matvey Lvovskiy, Simon Iokhvidson, Mikhail Lvovsky, Alexander Efros
  • Publication number: 20090115586
    Abstract: The present invention relates to indication systems providing augmented visual support for the operator of a motor vehicle, vessel or an aircraft. The indication system is positioned in the location of a traditional vehicular gauge dashboard. The indication system consists of an image formulator and an optical collimator system with two visual channels. Lower channel is used for direct visual tracking of all virtual gauge readings while the upper channel is used to track updates “on the windshield” of a vehicle with the background of the surrounding environment. The lower channel displays virtual collimator imaging of the traditional analog or digital gauges as well as navigational system data. The upper channel is reflected onto the exterior background of the windshield and displays collimator imaged critical data that is required for the safe operation of a vehicle. To provide the switching functionality between the two channels, the indication system utilizes a lightproof partition.
    Type: Application
    Filed: December 19, 2006
    Publication date: May 7, 2009
    Inventors: Matvey Lvovskiy, Simon Iokhvidson, Mikhail Lvovsky, Alexander Efros
  • Patent number: 6642538
    Abstract: This invention pertains to a device and a method for injecting spin polarized monochromatic electrons with a particular magnetic moment at room temperature and in absence of an external magnetic field into a nonmagnetic electrode. The device comprises a ferromagnetic electrode, a nonmagnetic electrode spaced from the ferromagnetic electrode, a nanocrystal doped with a single active paramagnetic ion disposed in the space between the electrodes, and an electrical connection between the electrodes for applying voltage to move the electrons from the ferromagnetic electrode, through the doped nanocrstal and into the nonmagnetic electrode.
    Type: Grant
    Filed: October 24, 2001
    Date of Patent: November 4, 2003
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Alexander Efros, Mervine Rosen, Emmanuel Rashba
  • Publication number: 20030075772
    Abstract: This invention pertains to a device and a method for injecting spin polarized monochromatic electrons with a particular magnetic moment at room temperature and in absence of an external magnetic field into a nonmagnetic electrode. The device comprises a ferromagnetic electrode, a nonmagnetic electrode spaced from the ferromagnetic electrode, a nanocrystal doped with a single active paramagnetic ion disposed in the space between the electrodes, and an electrical connection between the electrodes for applying voltage to move the electrons from the ferromagnetic electrode, through the doped nanocrstal and into the nonmagnetic electrode.
    Type: Application
    Filed: October 24, 2001
    Publication date: April 24, 2003
    Inventors: Alexander Efros, Mervine Rosen, Emmanuel Rashba