Patents Examined by Kaveh Kianni
  • Patent number: 9651743
    Abstract: Gradient index (GRIN) lens holders employing groove alignment feature(s) and a recessed cover, as well as optical connectors and methods employing such GRIN lens holders, are disclosed. In one embodiment, the GRIN lens holder contains one or more internal groove alignment features configured to secure one or more GRIN lenses in the GRIN lens holder. The groove alignment features are also configured to accurately align the end faces of the GRIN lenses. The GRIN lens holder also contains a recessed cover having a front face that is negatively offset with respect to a mating surface of the GRIN lens holder. The GRIN lens holders disclosed herein can be provided as part of an optical fiber ferrule and/or a fiber optic component or connector for making optical connections.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: May 16, 2017
    Inventors: John Joseph Costello, III, Michael de Jong, Davide Domenico Fortusini, Micah Colen Isenhour, Dennis Michael Knecht, James Phillip Luther, Nikolay Timofeyevich Timofeev
  • Patent number: 9279939
    Abstract: A spot-size converter includes a cladding layer having a principal surface; a first core layer disposed on the principal surface and having a light input/output portion and a first transition portion having a width W1, the light input/output portion being coupled to the first transition portion and having a width that monotonously decreases in a first direction from the light input/output portion toward the first transition portion; and a second core layer disposed on the principal surface, the second core layer having a second transition portion and a propagation portion coupled to the second transition portion, the second transition portion having a width W2 . The first core layer has a refractive index between refractive indices of the second core layer and the cladding layer. The first transition portion and the second transition portion are disposed with a gap therebetween and optically coupled to each other. A ratio (W1/W2) of the width W1 to the width W2 monotonously decreases in the first direction.
    Type: Grant
    Filed: February 24, 2012
    Date of Patent: March 8, 2016
    Inventor: Yutaka Onishi
  • Patent number: 9268088
    Abstract: A waveguide coupler includes a first waveguide and a second waveguide. The waveguide coupler also includes a connecting waveguide disposed between the first waveguide and the second waveguide. The connecting waveguide includes a first material having a first index of refraction and a second material having a second index of refraction higher than the first index of refraction.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: February 23, 2016
    Assignee: Skorpios Technologies, Inc.
    Inventors: Amit Mizrahi, Timothy Creazzo, Elton Marchena, Derek Van Orden, Stephen B. Krasulick
  • Patent number: 9259947
    Abstract: An image forming apparatus includes a sheet feed conveying unit having an outlet for a recording medium on one side; at least one image forming unit having an inlet for the recording medium on one side and an outlet for the recording medium on the other side; and a sheet eject conveying unit having an inlet for the recording medium on one side, wherein the sheet feed conveying unit, the image forming unit, and the sheet eject conveying unit are arranged along a conveying direction of the recording medium; the outlet of the sheet feed conveying unit matches the inlet of the image forming unit; the outlet of the image forming unit matches the inlet of the sheet eject conveying unit; and the sheet feed conveying unit, the image forming unit, and the sheet eject conveying unit are connected to each other in a separable manner.
    Type: Grant
    Filed: October 20, 2009
    Date of Patent: February 16, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yuuji Ohmura, Yasushi Hashimoto, Yoshikane Matsumoto
  • Patent number: 9256086
    Abstract: Electro-optic (EO) modulator and related device structures which can be used in conjunction with high EO materials to lower switching voltage and improve related performance parameters.
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: February 9, 2016
    Assignee: Northwestern University
    Inventors: Seng-Tiong Ho, Fei Yi, Tobin J. Marks
  • Patent number: 9256039
    Abstract: A device including a port barrel, a ball spring, a first enclosure part, and a mounting plate disposed adjacent to the first enclosure part is disclosed. The mounting plate includes a mounting hole. The port barrel is arranged to extend through the mounting hole, and the ball spring is arranged between an inner surface of the mounting hole and an exterior surface of the port barrel.
    Type: Grant
    Filed: January 4, 2013
    Date of Patent: February 9, 2016
    Assignee: Cisco Technology, Inc.
    Inventors: Joyce J. M. Peternel, Yong M. Jeon
  • Patent number: 9256034
    Abstract: An optical connector includes a first optical-electric coupling element, a second optical-electric coupling element, and a fixing device. The first optical-electric coupling element defines a first cavity and a second cavity. The second cavity includes two opposite first sidewalls. Each first sidewall defines a locating cutout. The second optical-electric coupling element is received in the second cavity, and defines a third cavity. The third cavity includes two opposite second sidewalls. Each second sidewall defines a through hole. The fixing device includes two elastic deformable portions conforming the two through holes, and a number receiving holes each for receiving a optical fiber. The fixing device is received in the through holes, with the elastic deformable portion resisting against an internal sidewall of the locating cutout, to firmly lock the second optical-electric coupling element into the second cavity of the first optical-electric coupling element.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: February 9, 2016
    Inventor: Po-Wei Huang
  • Patent number: 9257666
    Abstract: The present invention relates integrated optoelectronic devices comprising light emitting field-effect transistors. We describe an optoelectronic device comprising a light-emitting field effect transistor (LFET) with an organic semiconductor active layer and a waveguide integrated within the channel of the light-emitting field effect transistor, wherein said waveguide comprises a material which has a higher refractive index than said organic semiconductor. We also describe a light-emitting organic field transistor integrated with a ridge or rib waveguide incorporated within the channel of the LFET; and a similar light-emitting organic field effect transistor in which the waveguide incorporates an optical feedback mechanism.
    Type: Grant
    Filed: November 26, 2009
    Date of Patent: February 9, 2016
    Inventors: Henning Sirringhaus, Michael C. Gwinner, Harald Giessen, Heinz Clemens Schweizer
  • Patent number: 9250401
    Abstract: Multi-channel optical modules are provided. The multi-channel optical module may include a plurality of optical devices receiving or transmitting optical signals, a housing for optically coupling the plurality of optical devices to an optical fiber, at least one optical filter separating or multiplexing the optical signals according to wavelengths of the optical signals between the optical fiber and the plurality of optical devices, and at least one filter holder protruding into an inside of the housing. The optical filter may be mounted on the filter holder to align optical paths between the optical fiber and the optical devices.
    Type: Grant
    Filed: August 14, 2012
    Date of Patent: February 2, 2016
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Kwon-Seob Lim, Hyun Seo Kang, Young Sun Kim, Young Soon Heo, Hyoung Jun Park, In Hee Shin
  • Patent number: 9250480
    Abstract: In one embodiment, a liquid crystal display panel includes an array substrate and a counter substrate each having a display region and a peripheral region arranged adjacent to the display region. A resin layer is formed either one of the array substrate and the counter substrate. A protrusion in the shape of a wall is arranged on the resin layer with a gap between the protrusion and the substrate opposing the protrusion. A seal material is formed between the array substrate and the counter substrate, and arranged between a peripheral portion of the display region and the protrusion for attaching the array substrate and the counter substrate. A liquid crystal layer is formed in a surrounded region by the array substrate, the counter substrate and the seal material.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: February 2, 2016
    Assignee: JAPAN DISPLAY INC.
    Inventors: Katsuhiro Hoshina, Tetsuya Iizuka
  • Patent number: 9244227
    Abstract: A grating coupler comprising a semiconductor substrate, a one-dimensional (1D) grating element coupled to the semiconductor substrate, wherein the 1D grating element is adapted to simultaneously couple a first polarization component of an incident optical beam with a transverse electric (TE) waveguide mode in a first propagation direction and a second polarization component of the incident optical beam with a transverse magnetic (TM) waveguide mode in a second propagation direction, and wherein the first propagation direction is opposite of the second propagation direction.
    Type: Grant
    Filed: November 11, 2013
    Date of Patent: January 26, 2016
    Assignee: Futurewei Technologies, Inc.
    Inventors: Qianfan Xu, Xiao Shen
  • Patent number: 9244237
    Abstract: An optical fiber with a resilient jacket is disclosed. The optical fiber includes a cushion layer overlying the optical fiber in which the cushion layer is formed from a plurality of cushion members. The cushion members can be tubes that are hollow or that are partially or completely filled with a soft thermoplastic material. A polymeric sleeve overlies the cushion layer.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: January 26, 2016
    Inventor: Ashok K. Mehan
  • Patent number: 9239494
    Abstract: A liquid crystal device comprising a first substrate; a second substrate; and a liquid crystal layer sandwiched between the first substrate and the second substrate, the liquid crystal layer comprising a nematic liquid crystal material and a polymer network. The polymer network is anchored to said first substrate and is configured to alternatingly induce splay deformation and bend deformation of the nematic liquid crystal material along a line parallel with the first substrate. Hereby, the relaxation time ?fall of the liquid crystal device is reduced.
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: January 19, 2016
    Inventors: Lachezar Komitov, Gurumurthy Hegde, Seung Hee Lee
  • Patent number: 9223123
    Abstract: The invention consists in passing a laser beam (3) from each of laser sources (1) through its individual first optical system (4), single reflecting this beam (3) from a substantially flat individual reflecting surface (7) towards an input facet (10?) and focusing this beam (3) by a second common optical system on the input facet (10?) of the fiber (10). The laser beams (3) are emitted by laser modules (1), each containing a single laser source in an individual housing (2) with a first optical system (4), fixed with respect to the housing (2). The housing (2) of each laser module (1) is mounted in a holder (17, 20). The second optical system (9) is placed directly in front of the input facet (10?) of the fiber (10). An axis (12) of each first optical system (3) forms with an axis (13) of the second optical system (9) an angle (?) ranging between 45 (??) and 145 (??) degrees.
    Type: Grant
    Filed: October 10, 2010
    Date of Patent: December 29, 2015
    Inventor: Witold Trzeciakowski
  • Patent number: 9223103
    Abstract: The present disclosure relates to a telecommunications cable having a layer constructed to resist post-extrusion shrinkage. The layer includes a plurality of discrete shrinkage-reduction members embedded within a base material. The shrinkage-reduction members can be made of a liquid crystal polymer. The disclosure also relates to a method for manufacturing telecommunications cables having layers adapted to resist post-extrusion shrinkage.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: December 29, 2015
    Assignee: CommScope Technologies LLC
    Inventor: Wayne M. Kachmar
  • Patent number: 9223102
    Abstract: Disclosed is a low-shrink buffer tube having a reduced diameter. The buffer tube provides adequate crush resistance and is suitable for deployments requiring mid-span access.
    Type: Grant
    Filed: January 6, 2014
    Date of Patent: December 29, 2015
    Assignee: Draka Comteq, B.V.
    Inventors: Don Parris, Patrick King Strong, Denise Collado, Jeffrey Scott Barker
  • Patent number: 9223093
    Abstract: A receptacle includes a hollow cylinder and a flange. A plug includes a barrel having a cylindrical body, a semicylindrical section extending from the body, and an engaging section provided at an end of the semicylindrical section and a coupling nut. A boom-like retaining piece is cut out and formed in the semicylindrical section and a retaining hook is formed at an idle end of the retaining piece located in the engaging section. The coupling nut is screwed onto threads of the hollow cylinder so that the plug is connected to the receptacle. Before the connection, the engaging section is engaged with and inserted into the hollow cylinder and the retaining piece is caught in the receptacle, so that the plug is temporarily retained to the receptacle securely.
    Type: Grant
    Filed: May 2, 2013
    Date of Patent: December 29, 2015
    Inventors: Takeo Toda, Hideto Shimazu
  • Patent number: 9217821
    Abstract: A light guide plate includes a body portion, and a plurality of unit shaped elements defining a light exit surface and arranged on one-side surface of the body portion side by side in an arrangement direction intersecting a light guide direction. Each unit shaped element extends in a direction intersecting the arrangement direction. A light exit surface angle ?a, which is the angle of the contour of each unit shaped element with respect to the one-side surface, is more than 10° and not more than 30° in a zone of the contour of each unit shaped element, the width of the zone along the arrangement direction being not less than 35% and not more than 70% of the full width of the unit shaped element.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: December 22, 2015
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Masahiro Goto, Hiroshi Sekiguchi, Hiroshi Yamamoto
  • Patent number: 9217833
    Abstract: The present invention relates to a positioning means for a fiber optic connector assembly, a fiber optic connector assembly and a fiber termination unit comprising the positioning means through which manufacturing tolerances can be absorbed to provide an improved optical interconnection with a high signal transmission rate. The positioning means (1) comprises a receiving means (5) for receiving one of a jack assembly or plug assembly (2) and a stationary support (6) supporting said receiving means (5), wherein the receiving means (5) is displaceable to a certain extent relative to the stationary support (6) at least along one direction other than a connection direction for optically interconnecting the optical fibers allowing an alignment of the receivable jack or plug assembly (2) along the direction transversal to the connection direction. A spring loaded element (8) resiliently urges said receiving means (5) away from the support (6) in one embodiment.
    Type: Grant
    Filed: September 2, 2010
    Date of Patent: December 22, 2015
    Assignee: Tyco Electronics Raychem BVBA
    Inventors: Kristof Vastmans, Eric Schurmans, Kathleen Bellekens
  • Patent number: 9213156
    Abstract: Methods for manufacturing and using an optical or optoelectronic device are disclosed. The optical or optoelectronic device and related methods may be useful as an optical or optoelectronic transceiver or for the processing of optical signals. The optical or optoelectronic device generally comprises a light-transmitting medium configured to transmit a first light beam; a light-receiving unit configured to receive and process a focused, reflected light beam; a first mirror or beam splitter configured to reflect at least a first portion of the transmitted light beam away from the light-receiving unit; a lens configured to focus the reflected light beam; and a second mirror configured to reflect the focused, reflected light beam towards the light-receiving unit.
    Type: Grant
    Filed: August 17, 2011
    Date of Patent: December 15, 2015
    Assignee: Source Photonics, Inc.
    Inventor: Moshe Amit