Patents by Inventor Aram Bagramyan
Aram Bagramyan 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: 9448456Abstract: A liquid crystal optical device has a layered structure with split liquid crystal layers having alignment surfaces that define in a liquid crystal material pre-tilt angles of opposite signs. Four liquid crystal layers can provide two directions of linear polarization. In the case of a lens, the device can be a gradient index lens, and the alignment surfaces can have a spatially uniform pre-tilt.Type: GrantFiled: October 8, 2013Date of Patent: September 20, 2016Assignee: LENSVECTOR, INC.Inventors: Karen Asatryan, Tigran Galstian, Aram Bagramyan, Vladimir Presniakov, Amir Tork, Armen Zohrabyan, Peter P. Clark
-
Patent number: 9405093Abstract: An auto-focus system employing a tunable liquid crystal lens is provided that collects images at different optical power values as the liquid crystal molecules are excited between a ground state and a maximum optical power state tracking image focus scores. An image is acquired at a desired optical power value less than maximum optical power established with the liquid crystal molecules closer a fully excited state than the maximum optical power state having the same image focus score. This drive signal employed during image acquisition uses more power than was used to achieve the same optical power value during the auto-focus scan, while actively driving the liquid crystal molecules is fast. A pause due to image transfer/processing delays after acquisition is employed to allow slow relaxation of the liquid crystal molecules back to the ground state in preparation for a subsequent focus search.Type: GrantFiled: April 7, 2015Date of Patent: August 2, 2016Assignee: LENSVECTOR INC.Inventors: Armen Zohrabyan, Tigran Galstian, Karen Asatryan, Vladimir Presniakov, Marco Thiboutot, Aram Bagramyan, Amir Tork, Jeffrey James Parker, Ted Cooper, Behzad Khodadad, Gongjian Hu, Chong I Cheang
-
Publication number: 20160161782Abstract: Variable liquid crystal devices for controlling the propagation of light through a liquid crystal layer use a frequency dependent material to dynamically reconfigure effective electrode structures in the device. The drive signal source uses pulse-width modulation to set a frequency and an amplitude of the drive signal.Type: ApplicationFiled: January 14, 2016Publication date: June 9, 2016Inventors: Tigran Galstian, Vladimir Presniakov, Karen Asatryan, Amir Tork, Armen Zohrabyan, Aram Bagramyan
-
Publication number: 20160041449Abstract: 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: ApplicationFiled: March 12, 2014Publication date: February 11, 2016Inventors: Peter Clark, Tigran Galstian, Karen Asatryan, Vladimir Presniakov, Aram Bagramyan, Amir Tork, Armen Zohrabyan, Simon Careau
-
Patent number: 9244297Abstract: Variable liquid crystal devices for controlling the propagation of light through a liquid crystal layer use a frequency dependent material to dynamically reconfigure effective electrode structures in the device. The drive signal source uses pulse-width modulation to set a frequency and an amplitude of the drive signal.Type: GrantFiled: March 27, 2015Date of Patent: January 26, 2016Assignee: LENSVECTOR INC.Inventors: Tigran Galstian, Vladimir Presniakov, Karen Asatryan, Amir Tork, Armen Zohrabyan, Aram Bagramyan
-
Publication number: 20160000557Abstract: A liquid crystal optical device is provided, including a layered structure including at least two support substrates. An external hole patterned control electrode is provided on one of the substrates and has an aperture. An internal hole patterned control electrode is provided on one of the substrates within the aperture, the internal and outer control electrodes being separated by a gap, which forms part of the aperture. A weakly conductive material is provided on one of the substrates over the aperture. A planar transparent electrode is provided on another one of the substrates. An alignment surface is provided on the substrates over the electrodes. A layer of liquid crystal material is contained by the substrates and in contact with the alignment surface of the substrates. A floating transparent electrode is provided on a side of one of the substrates opposite the outer and the internal hole patterned electrode.Type: ApplicationFiled: December 18, 2013Publication date: January 7, 2016Applicant: LENSVECTOR INC.Inventors: Tigran GALSTIAN, Karen ASATRYAN, Vladimir PRESNIAKOV, Aram BAGRAMYAN, Amir TORK, Armen ZOHRABYAN, Simon CAREAU
-
Patent number: 9229254Abstract: Variable liquid crystal devices for controlling the propagation of light through a liquid crystal layer use a frequency dependent material to dynamically reconfigure effective electrode structures in the device. The drive signal source uses pulse-width modulation to set a frequency and an amplitude of the drive signal.Type: GrantFiled: September 30, 2014Date of Patent: January 5, 2016Assignee: LENSVECTOR INC.Inventors: Tigran Galstian, Vladimir Presniakov, Karen Asatryan, Amir Tork, Armen Zohrabyan, Aram Bagramyan
-
Patent number: 9201285Abstract: An electrode structure is proposed for controlling a spatially non-uniform electric field driving a tunable liquid crystal lens or beam steering device. The spatially non-uniform electrode structure enables the generation of a predetermined spatially non-uniform electric field profile where complex capacitive coupling between multiple different electrically floating neighboring electrode segments is employed for the generation of the electrical field of desired form by supplying an initial electric potential to a limited number of electrodes.Type: GrantFiled: November 11, 2013Date of Patent: December 1, 2015Assignee: LENSVECTOR INC.Inventors: Tigran Galstian, Vladimir Presniakov, Karen Asatryan, Amir Tork, Armen Zohrabyan, Aram Bagramyan, Simon Careau
-
Publication number: 20150301307Abstract: An auto-focus system employing a tunable liquid crystal lens is provided that collects images at different optical power values as the liquid crystal molecules are excited between a ground state and a maximum optical power state tracking image focus scores. An image is acquired at a desired optical power value less than maximum optical power established with the liquid crystal molecules closer a fully excited state than the maximum optical power state having the same image focus score. This drive signal employed during image acquisition uses more power than was used to achieve the same optical power value during the auto-focus scan, while actively driving the liquid crystal molecules is fast. A pause due to image transfer/processing delays after acquisition is employed to allow slow relaxation of the liquid crystal molecules back to the ground state in preparation for a subsequent focus search.Type: ApplicationFiled: April 7, 2015Publication date: October 22, 2015Applicant: LENSVECTOR INC.Inventors: Armen ZOHRABYAN, Tigran GALSTIAN, Karen ASATRYAN, Vladimir PRESNIAKOV, Marco THIBOUTOT, Aram BAGRAMYAN, Amir TORK, Jeffrey James PARKER, Ted COOPER, Behzad KHODADAD, Gongjian HU, Chong I CHEANG
-
Publication number: 20150301427Abstract: A spatially non-uniform electrode structure is proposed for controlling a spatially non-uniform electric field driving a tunable liquid crystal lens. The spatially non-uniform electrode structure enables the generation of a predetermined spatially non-uniform electric field profile where complex capacitive coupling between multiple different electrically floating neighboring electrode segments is employed for the generation of the electrical field of desired form by supplying an initial electric potential to a limited number of electrodes.Type: ApplicationFiled: November 12, 2013Publication date: October 22, 2015Applicant: LENSVECTOR INC.Inventors: Tigran GALSTIAN, Vladimir PRESNIAKOV, Karen ASATRYAN, Amir TORK, Armen ZOHRABYAN, Aram BAGRAMYAN, Simon CAREAU
-
Publication number: 20150198830Abstract: Variable liquid crystal devices for controlling the propagation of light through a liquid crystal layer use a frequency dependent material to dynamically reconfigure effective electrode structures in the device. The drive signal source uses pulse-width modulation to set a frequency and an amplitude of the drive signal.Type: ApplicationFiled: March 27, 2015Publication date: July 16, 2015Inventors: Tigran Galstian, Vladimir Presniakov, Karen Asatryan, Amir Tork, Armen Zohrabyan, Aram Bagramyan
-
Patent number: 9065991Abstract: Methods are provided for wafer scale manufacturing camera modules without adjustment components to compensate for assembly errors and optical errors incurred within manufacturing tolerances. Camera modules are assembled in wafer arrays from arrays of image sensors, arrays of lens structures and arrays of optical trim elements. At least one of the arrays is a wafer. Lens structures are configured to provide less optical power than necessary to focus an image at infinity on image sensors without trim elements. A test performed during the wafer scale assembly of camera modules, after at least the sensor array and the lens structure array assembled, determines optical errors by identifying optical distortions and aberrations quantified in terms of optical power, astigmatism, coma, optical axis shift and optical axis reorientation deficiencies. Corresponding trim elements are configured to counteract distortions and aberrations prior to singulating useful camera modules from the array.Type: GrantFiled: November 1, 2011Date of Patent: June 23, 2015Assignee: LensVector Inc.Inventors: Tigran Galstian, Armen Zohrabyan, Karen Asatryan, Amir Tork, Vladimir Presniakov, Aram Bagramyan
-
Publication number: 20150146137Abstract: A liquid crystal optical device is provided. The optical device includes a liquid crystal cell controlling optical properties of light passing therethrough and has: a liquid crystal layer, a planar electrode located to one side of said liquid crystal layer; an electric field control structure located to the opposite side of the liquid crystal layer; and a wavefront adjustment structure configured to provide optical phase front adjustment. In some embodiments the wavefront adjustment structure is a conductive floating electrode. In other embodiments the wavefront adjustment structure is a weakly conductive structure having spatially variable sheet resistance. In other embodiments the wavefront adjustment structure a weakly conductive structure having spatially variable sheet resistance having a frequency dependent characteristic.Type: ApplicationFiled: January 28, 2015Publication date: May 28, 2015Inventors: Armen Zohrabyan, Karen Asatryan, Tigran Galstian, Vladimir Presniakov, Amir Tork, Aram Bagramyan
-
Patent number: 9030595Abstract: An auto-focus system employing a tunable liquid crystal lens is provided that collects images at different optical power values as the liquid crystal molecules are excited between a ground state and a maximum optical power state tracking image focus scores. An image is acquired at a desired optical power value less than maximum optical power established with the liquid crystal molecules closer a fully excited state than the maximum optical power state having the same image focus score. This drive signal employed during image acquisition uses more power than was used to achieve the same optical power value during the auto-focus scan, while actively driving the liquid crystal molecules is fast. A pause due to image transfer/processing delays after acquisition is employed to allow slow relaxation of the liquid crystal molecules back to the ground state in preparation for a subsequent focus search.Type: GrantFiled: October 14, 2011Date of Patent: May 12, 2015Assignee: Lensvector Inc.Inventors: Tigran Galstian, Karen Asatryan, Vladimir Presniakov, Marco Thiboutot, Armen Zohrabyan, Aram Bagramyan, Amir Tork, Ted Cooper, Behzad Khodadad, Gongjian Hu, Chong I Cheang, Jeffrey James Parker
-
Patent number: 8994915Abstract: A liquid crystal optical device is provided. The optical device includes a liquid crystal cell controlling optical properties of light passing therethrough and has: a liquid crystal layer, a planar electrode located to one side of said liquid crystal layer; an electric field control structure located to the opposite side of the liquid crystal layer; and a wavefront adjustment structure configured to provide optical phase front adjustment. In some embodiments the wavefront adjustment structure is a conductive floating electrode. In other embodiments the wavefront adjustment structure is a weakly conductive structure having spatially variable sheet resistance. In other embodiments the wavefront adjustment structure a weakly conductive structure having spatially variable sheet resistance having a frequency dependent characteristic.Type: GrantFiled: January 27, 2012Date of Patent: March 31, 2015Assignee: LensVector Inc.Inventors: Armen Zohrabyan, Karen Asatryan, Tigran Galstian, Vladimir Presniakov, Amir Tork, Aram Bagramyan
-
Publication number: 20150055037Abstract: Variable liquid crystal devices for controlling the propagation of light through a liquid crystal layer use a frequency dependent material to dynamically reconfigure effective electrode structures in the device. The drive signal source uses pulse-width modulation to set a frequency and an amplitude of the drive signal.Type: ApplicationFiled: September 30, 2014Publication date: February 26, 2015Inventors: Tigran Galstian, Vladimir Presniakov, Karen Asatryan, Amir Tork, Armen Zohrabyan, Aram Bagramyan
-
Patent number: 8860901Abstract: Variable liquid crystal devices for controlling the propagation of light through a liquid crystal layer use a frequency dependent material to dynamically reconfigure effective electrode structures in the device. The drive signal source uses pulse-width modulation to set a frequency and an amplitude of the drive signal.Type: GrantFiled: November 21, 2012Date of Patent: October 14, 2014Assignee: Lensvector Inc.Inventors: Tigran Galstian, Vladimir Presniakov, Karen Asatryan, Amir Tork, Armen Zohrabyan, Aram Bagramyan
-
Publication number: 20140139768Abstract: An electrode structure is proposed for controlling a spatially non-uniform electric field driving a tunable liquid crystal lens or beam steering device. The spatially non-uniform electrode structure enables the generation of a predetermined spatially non-uniform electric field profile where complex capacitive coupling between multiple different electrically floating neighboring electrode segments is employed for the generation of the electrical field of desired form by supplying an initial electric potential to a limited number of electrodes.Type: ApplicationFiled: November 11, 2013Publication date: May 22, 2014Applicant: LensVector Inc.Inventors: Tigran GALSTIAN, Vladimir PRESNIAKOV, Karen ASATRYAN, Amir TORK, Armen ZOHRABYAN, Aram BAGRAMYAN
-
Patent number: 8679274Abstract: A wafer level method of manufacturing a liquid crystal optical device removes the need for a rigid barrier fillet while minimizing any risk of contamination of the liquid crystal. An uncured adhesive may be deposited on a bottom substrate and partially cured to form a liquid crystal barrier. After addition of the liquid crystal and a top substrate, the adhesive is fully cured to bond the substrate layers together. An uncured adhesive may be used together with the partially cured adhesive, and may be deposited separately or filled into an extracellular matrix surrounding a plurality of liquid crystal cells. The adhesive may be cured by a variety of means, including light that may be spatially modulated. One or both of the substrates may be deformed during assembly so as to create a structure with a lensing effect on light passing through the liquid crystal region.Type: GrantFiled: September 26, 2012Date of Patent: March 25, 2014Assignee: Lensvector Inc.Inventors: Tigran Galstian, Vladimir Presniakov, Karen Asatryan, Amir Tork, Armen Zohrabyan, Aram Bagramyan
-
Publication number: 20140076845Abstract: A tunable liquid crystal optical device defining an optical aperture and having a layered structure. The device includes a film electrode formed on a surface of a first substrate and covered by a second substrate, and a contact structure filling a volume within the layered structure and contacting the film electrode. The contact structure is located outside of the optical aperture and provides an electrical connection surface much larger than a thickness of the film electrode, such that reliable electrical connections may be made to the electrode, particularly in the context of wafer scale manufacturing of such a device.Type: ApplicationFiled: September 13, 2013Publication date: March 20, 2014Applicant: LensVector, Inc.Inventors: Michael J. NYSTROM, Viktor KONOVALOV, Rubin MA, Amir TORK, Aram BAGRAMYAN, Vladimir PRESNIAKOV