Patents by Inventor Tigran Galstian

Tigran Galstian 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).

  • Patent number: 11221539
    Abstract: A lighting device using a liquid crystal beam modulator produces good broadening of a light beam. The liquid crystal cell has a patterned electrode structure having a pattern of paired electrodes on a first one of a pair of cell substrates for providing a spatially modulated electric field extending into a liquid crystal material, and the cell is arranged with respect to a light source so that an incident beam will arrive through another of the pair of substrates and exit from the first one of the pair of substrates.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: January 11, 2022
    Inventors: Tigran Galstian, Karen Asatryan, Armen Zohrabyan, Vladimir Presniakov
  • Patent number: 11156895
    Abstract: A liquid crystal optical device providing refractive Fresnel lens type element control over light passing through an aperture is provided. The device includes a layer of liquid crystal material contained by flat substrates having flat alignment layers; and an arrangement of electrodes configured to provide a spatially varying voltage distribution within a number of lensing zones within said liquid crystal layer. The arrangement of electrodes includes ring-shaped electrodes defining boundaries between Fresnel lensing zones. The liquid crystal optical device is structured to provide a spatial variation in the optical phase delay with an abrupt transition at a boundary between lensing zones to increase the effective aperture of the optical device.
    Type: Grant
    Filed: November 19, 2018
    Date of Patent: October 26, 2021
    Inventors: Tigran Galstian, Karen Asatryan, Vladimir Presniakov, Aram Bagramyan, Armen Zohrabyan, Simon Careau
  • Patent number: 11097651
    Abstract: For vehicles having left and right headlights, a steering direction signal input indicative of a left or right steering direction is used to modulate a control signal of a liquid crystal beam broadening device to broaden horizontally the vehicle headlight beam when the steering direction signal input is indicative of a selected one of a left or a right steering direction and to maintain or reduce a horizontal spread of the vehicle headlight beam when said steering direction signal input is indicative of one of a left or a right steering direction opposite to the selected steering direction.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: August 24, 2021
    Assignee: LENSVECTOR INC.
    Inventor: Tigran Galstian
  • Patent number: 11042064
    Abstract: A method of wafer level manufacturing, separating and electrical connection of liquid crystal optical devices is disclosed. An electro-optic device having at least one liquid crystal cell for providing spatially variable control of light is also described.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: June 22, 2021
    Assignee: Lensvector Inc.
    Inventors: Tigran Galstian, Aram Bagramyan, Amir Tork
  • Patent number: 11035552
    Abstract: A variable light beam is provided from a light source. The light source can be an LED light source or other source. The light source includes basic collimation optics, such as reflector or Fresnel lens, an electrically controllable LC device, such as a polydisperse LC film, in front of the incident spot light beam. Preferably the polydisperse LC film includes transparent flat uniform electrode layers. The LC device can be autonomous of the light source. The proposed solution provides a dynamically controllable, preferably polarizer-free and pixel-free, beam shape light source module including a controllable light beam control module and a light source module providing the initial light beam in a scanner light source, a camera flash, an architectural, automobile or industrial lighting device.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: June 15, 2021
    Assignee: LensVector Inc.
    Inventors: Tigran Galstian, Karen Asatryan, Vladimir Presniakov, Armen Zohrabyan, Jacques Godin
  • Publication number: 20210109419
    Abstract: Liquid crystal (LC) beam modulation devices are applied to lighting control or to optical wireless communications to improve performance of lighting or communications. A flexible optical network using LC beam modulation and common control of beam intensity and solid angle of beams are also described.
    Type: Application
    Filed: December 6, 2017
    Publication date: April 15, 2021
    Inventor: Tigran Galstian
  • Patent number: 10845672
    Abstract: Liquid crystal light beam broadening devices and their manufacture are described. Beneficial aspects of beam broadening devices employed for controlled illumination and architectural purposes are presented including providing symmetric beam broadening, improving the beam intensity profile, beam divergence preconditioning and improving projected beam intensity uniformity. Both beam control devices having in-plane and homeotropic ground state liquid crystal alignment are presented.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: November 24, 2020
    Assignee: LENSVECTOR INC.
    Inventors: Tigran Galstian, Vladimir Presniakov, Karen Asatryan, Armen Zohrabyan
  • Patent number: 10809138
    Abstract: A fiber-optic thermometer probe has an optical fiber with a sensing portion, namely a region of reduced cladding thickness coated with a temperature-dependent refractive index material to provide variations in propagated light power upon changes in temperature in a vicinity of the sensing portion. A reflective interface optically coupled to a core of the optical fiber reflects light propagated therein. The sensing portion can be the tip and prepared by etching using a dipping process.
    Type: Grant
    Filed: June 5, 2014
    Date of Patent: October 20, 2020
    Assignee: UNIVERSITÉ LAVAL
    Inventor: Tigran Galstian
  • Patent number: 10747084
    Abstract: A liquid crystal optical device is described configured to provide variable beam steering or refractive Fresnel lens control over light passing through an aperture of the device. The device includes at least one layer of liquid crystal material contained by substrates having alignment layers. An arrangement of electrodes is configured to provide a spatially varying electric field distribution within a number of zones within the liquid crystal layer. The liquid crystal optical device is structured to provide a spatial variation in optical phase delay with a transition at a boundary between zones which is an approximation of a sawtooth waveform across the boundaries of multiple zones. The arrangement of electrodes, device layered geometry and methods of driving the electrodes increase the effective aperture of the overall optical device.
    Type: Grant
    Filed: June 14, 2019
    Date of Patent: August 18, 2020
    Assignee: LENSVECTOR INC.
    Inventors: Tigran Galstian, Karen Asatryan, Armen Zohrabyan, Marco Thiboutot, Vladimir Presniakov
  • Publication number: 20200231084
    Abstract: For vehicles having left and right headlights, a steering direction signal input indicative of a left or right steering direction is used to modulate a control signal of a liquid crystal beam broadening device to broaden horizontally the vehicle headlight beam when the steering direction signal input is indicative of a selected one of a left or a right steering direction and to maintain or reduce a horizontal spread of the vehicle headlight beam when said steering direction signal input is indicative of one of a left or a right steering direction opposite to the selected steering direction.
    Type: Application
    Filed: February 26, 2018
    Publication date: July 23, 2020
    Inventor: Tigran GALSTIAN
  • Patent number: 10718154
    Abstract: Liquid crystal modulator optical devices and more specifically shutters and smart windows are presented. The liquid crystal modulator devices are characterized by a reduced polymer content which is eliminated from the material composition of the liquid crystal layer and characterized by non-uniform electrode structures in the liquid crystal structure configured to generate spatially non-uniform electric fields and therefore non-uniform molecular reorientation of liquid crystal molecules. This arrangement advantageously makes light scattering electrically controllable.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: July 21, 2020
    Assignee: UNIVERSITÉ LAVAL
    Inventor: Tigran Galstian
  • Patent number: 10631715
    Abstract: There is disclosed an imaging system for use in imaging a sample. The imaging system comprising a light source and a light detector. A probe optically coupled to the imaging assembly. The probe being configured to, during use, direct light from the light source to a focal point to illuminate the sample, and from the focal point to the light detector. The probe having a tunable liquid crystal lens (TLCL) assembly comprising at least one pair of TLCLs, the TLCLs of the pair being superposed to one another, a gradient-index (GRIN) lens assembly having a base being optically connected to the TLCL assembly, and a tip opposite to the base. The focal point being at a working distance from the tip. The working distance being adjustable relative to the tip by tuning each TLCL of the TLCL assembly during use.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: April 28, 2020
    Assignee: UNIVERSITÉ LAVAL
    Inventors: Tigran Galstian, Armen Saghatelyan, Arutyun Bagramyan
  • Patent number: 10561492
    Abstract: A reprogrammable intraocular adaptive lens prosthesis apparatus is provided. The apparatus includes a tunable liquid crystal lens (TLCL) encapsulated in the intraocular prosthesis with control electronics and a power source or in the intraocular prosthesis with a control signal receiver while an external control electronics package transmits the control signal. The TLCL is driven in response to a stimulus signal to provide accommodation. The TLCL corrects other visual shortcomings of the natural eye. The intraocular prosthesis has a remote programmable TLCL controller configured to recalibrate the TLCL to compensate for dynamic adaptation of the eye over time.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: February 18, 2020
    Assignee: LENSVECTOR INC.
    Inventors: Tigran Galstian, Howard Earhart
  • Publication number: 20200050076
    Abstract: Liquid crystal light beam broadening devices and their manufacture are described. Beneficial aspects of beam broadening devices employed for controlled illumination and architectural purposes are presented including providing symmetric beam broadening, improving the beam intensity profile, beam divergence preconditioning and improving projected beam intensity uniformity. Both beam control devices having in-plane and homeotropic ground state liquid crystal alignment are presented.
    Type: Application
    Filed: April 20, 2018
    Publication date: February 13, 2020
    Inventors: Tigran Galstian, Vladimir Presniakov, Karen Asatryan, Armen Zohrabyan
  • Publication number: 20190377248
    Abstract: A variable reflection mode optical device for controlling properties of reflected light is described. The device includes a light reflecting surface of an array of controllable mirror elements, a layer of dynamically controllable material and an excitation source for generating an excitation field acting on the layer of dynamically controllable material. An electrical drive signal applied to the excitation source causes a change of optical properties in the layer of dynamically controllable material to provide a spatially varying change in light reflection having at least one of a desired phase curvature and a desired amplitude modulation profile.
    Type: Application
    Filed: December 14, 2017
    Publication date: December 12, 2019
    Inventor: Tigran GALSTIAN
  • Patent number: 10503042
    Abstract: A liquid crystal optical device is provided including at least two LC cells. A first LC cell layer has a predominant director orientation imparting a transversally non-uniform phase delay to a first polarization of an unpolarized incident light field passing therethrough while incident light of a second polarization orthogonal to the first light polarization passes therethrough undergoing transversally uniform phase delay. The first LC cell is configured to project a center extraordinary ray onto an optical axis of the device at the image surface. A second LC cell layer has a predominant director oriented orthogonally to the other predominant director in a plane perpendicular to the optical axis. The second LC layer imparts a transversally non-uniform phase delay to the second polarization of the incident light passing therethrough, the second LC cell being configured to project a center ordinary ray onto the optical axis at the image surface.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: December 10, 2019
    Assignee: LENSVECTOR INC.
    Inventors: Peter Clark, Tigran Galstian, Karen Asatryan, Vladimir Presniakov, Aram Bagramyan, Amir Tork, Armen Zohrabyan, Simon Careau
  • Publication number: 20190310532
    Abstract: A lighting device using a liquid crystal beam modulator produces good broadening of a light beam. The liquid crystal cell has a patterned electrode structure having a pattern of paired electrodes on a first one of a pair of cell substrates for providing a spatially modulated electric field extending into a liquid crystal material, and the cell is arranged with respect to a light source so that an incident beam will arrive through another of the pair of substrates and exit from the first one of the pair of substrates.
    Type: Application
    Filed: September 22, 2017
    Publication date: October 10, 2019
    Inventors: Tigran Galstian, Karen Asatryan, Armen Zohrabyan, Vladimir Presniakov
  • Publication number: 20190294020
    Abstract: A liquid crystal optical device is described configured to provide variable beam steering or refractive Fresnel lens control over light passing through an aperture of the device. The device includes at least one layer of liquid crystal material contained by substrates having alignment layers. An arrangement of electrodes is configured to provide a spatially varying electric field distribution within a number of zones within the liquid crystal layer. The liquid crystal optical device is structured to provide a spatial variation in optical phase delay with a transition at a boundary between zones which is an approximation of a sawtooth waveform across the boundaries of multiple zones. The arrangement of electrodes, device layered geometry and methods of driving the electrodes increase the effective aperture of the overall optical device.
    Type: Application
    Filed: June 14, 2019
    Publication date: September 26, 2019
    Inventors: Tigran GALSTIAN, Karen ASATRYAN, Armen ZOHRABYAN, Marco THIBOUTOT, Vladimir PRESNIAKOV
  • Patent number: 10359686
    Abstract: A liquid crystal optical device is described configured to provide variable beam steering or refractive Fresnel lens control over light passing through an aperture of the device. The device includes at least one layer of liquid crystal material contained by substrates having alignment layers. An arrangement of electrodes is configured to provide a spatially varying electric field distribution within a number of zones within the liquid crystal layer. The liquid crystal optical device is structured to provide a spatial variation in optical phase delay with a transition at a boundary between zones which is an approximation of a sawtooth waveform across the boundaries of multiple zones. The arrangement of electrodes, device layered geometry and methods of driving the electrodes increase the effective aperture of the overall optical device.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: July 23, 2019
    Assignee: LENSVECTOR INC.
    Inventors: Tigran Galstian, Karen Asatryan, Armen Zohrabyan, Marco Thiboutot, Vladimir Presniakov
  • Publication number: 20190186712
    Abstract: A variable light beam is provided from a light source. The light source can be an LED light source or other source. The light source includes basic collimation optics, such as reflector or Fresnel lens, an electrically controllable LC device, such as a polydisperse LC film, in front of the incident spot light beam. Preferably the polydisperse LC film includes transparent flat uniform electrode layers. The LC device can be autonomous of the light source. The proposed solution provides a dynamically controllable, preferably polarizer-free and pixel-free, beam shape light source module including a controllable light beam control module and a light source module providing the initial light beam in a scanner light source, a camera flash, an architectural, automobile or industrial lighting device.
    Type: Application
    Filed: September 8, 2017
    Publication date: June 20, 2019
    Inventors: Tigran Galstian, Karen Asatryan, Vladimir Presniakov, Armen Zohrabyan, Jacques GODIN