Where The Second Or Further Layer Is A Coating Patents (Class 385/128)
  • Patent number: 11473942
    Abstract: Waveguides, such as light guides, made entirely of elastomeric material or with indents on an outer surface are disclosed. These improved waveguides can be used in sensors, soft robotics, or displays. For example, the waveguides can be used in a strain sensor, a curvature sensor, or a force sensor. In an instance, the waveguide can be used in a hand prosthetic. Sensors that use the disclosed waveguides and methods of manufacturing waveguides also are disclosed.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: October 18, 2022
    Assignee: Cornell University
    Inventors: Robert Shepherd, Huichan Zhao, Rukang Huang, Hedan Bai, Shuo Li
  • Patent number: 11435518
    Abstract: Provided is a coated optical fiber and an optical fiber cable capable of suppressing transmission loss (microbend loss) even in an optical fiber having high microbend sensitivity. In the present invention, the degree of freedom of a primary layer 11 represented by the equation (I) and the rigidity of a secondary layer 12 represented by the equation (II) are set in specific ranges, respectively. Thus, the present invention provides a coated optical fiber 1 capable of suppressing the transmission loss even when an optical fiber 10 having high microbend sensitivity such as a BI fiber having a large effective core cross-sectional area Aeff of an optical fiber is used. The present invention can be widely used as a coated optical fiber 1 constituting a coated optical fiber ribbon or as a coated optical fiber 1 housed in an optical fiber cable. Further, an optical fiber cable including such coated optical fibers 1 enjoys the effect of the above-described coated optical fiber 1. [Math.
    Type: Grant
    Filed: March 12, 2021
    Date of Patent: September 6, 2022
    Assignee: FURUKAWA ELECTRIC CO. LTD.
    Inventors: Minoru Kasahara, Yoshihiro Arashitani, Kouji Mochiduki, Masahiro Yabe
  • Patent number: 11422301
    Abstract: An optical fiber cable 100 includes at least one optical fiber core 140 and a sheath containing the optical fiber core. The optical fiber core 140 includes optical fibers 130. A total length of the optical fiber core 140 is longer than that of the sheath 160. The optical fiber core 140 is contained in the sheath 160 so that bending occurs in the optical fibers 130.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: August 23, 2022
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Yusuke Yamada, Masashi Kikuchi, Hisashi Izumita, Junichi Kawataka, Kazunori Katayama
  • Patent number: 11406248
    Abstract: The present disclosure relates to an optical fiber article and a method for the production of the optical fiber article. The present disclosure in particular relates to the use of the optical fiber article in a fiber bundle as light guide and/or image guide, for example in an endoscope.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: August 9, 2022
    Assignee: SCHOTT AG
    Inventors: Stephanie Mangold, Thomas Weingärtner, Oliver Fratzer
  • Patent number: 11407846
    Abstract: Provided are a monomer which can provide a cured product having both high toughness and rigidity, a monomer composition containing the monomer, the monomer composition used as a dental material monomer composition, a dental material composition containing the monomer composition or the dental material monomer composition, a cured product thereof having excellent mechanical properties, a dental material formed by curing the dental material composition, a method for producing the monomer composition, and a method for producing the dental material. A (meth)acrylate (D) is a reaction product of an amine compound (A) having two or more amino groups, an iso(thio)cyanate compound (B) having two or more iso(thio)cyanato groups, and a hydroxy (meth)acrylate compound (C) having one or more polymerizable groups.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: August 9, 2022
    Assignee: MITSUI CHEMICALS, INC.
    Inventor: Naoyuki Kakinuma
  • Patent number: 11396476
    Abstract: The present invention concerns an optical fibre comprising: an optical waveguide comprising a glass core surrounded by a glass cladding; a coating surrounding said optical waveguide comprising a cured polymer material comprising a polyester obtained by esterification of: a reactant A selected from an acid, a triglyceride, or a mixture of triglycerides having a C16-C24 aliphatic chain comprising at least two conjugated double bonds; and a polyol made of at least one monomer comprising at least 3 hydroxyl groups, the polyol being thermally stable up to 300° C. (reactant B). The present invention concerns also the above said polyester coating, a method for coating an optical fibre with said polyester coating and a method for obtaining predetermined mechanical properties of a coating for an optical fibre. The cured polymer forming the coating can be prepared by curing the polyester of the invention either thermally or by radiation.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: July 26, 2022
    Assignees: PRYSMIAN S.p.A., POLITECNICO DI MILANO
    Inventors: Lidia Terruzzi, Pamela De Martino, Attilio Citterio, Massimo Gola
  • Patent number: 11385431
    Abstract: The coated optical fiber (10) includes: an optical fiber (11) including a core (111) and a cladding (112); a first buffer layer (121) covering the optical fiber (11), and having a refractive index lower than that of the cladding (112) and a Shore D hardness of D/20.0/1 or higher; a second buffer layer (122) covering the first buffer layer (121), and having a higher Shore D hardness than the first buffer layer (121); and a jacket (13) covering the second buffer layer (122).
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: July 12, 2022
    Assignee: Mitshishi Cable Industries, Ltd.
    Inventors: Masatoshi Tanaka, Yoshiki Yamakawa, Hideaki Itou, Daiki Tabei
  • Patent number: 11372155
    Abstract: An optical fiber comprises a glass fiber; a primary resin layer coating an outer periphery of the glass fiber; and a secondary resin layer coating an outer periphery of the primary resin layer, and a pH of the primary resin layer is greater than a pH of the secondary resin layer.
    Type: Grant
    Filed: April 17, 2018
    Date of Patent: June 28, 2022
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Kumiko Tachibana, Noriaki Iwaguchi, Takashi Fujii
  • Patent number: 11359939
    Abstract: Provided is an optical waveguide with an inscribed Bragg grating, where the Bragg grating is stable at high temperature, has low scattering loss and high reflectivity. Also provided is a method for inscribing a Bragg grating in an optical waveguide, the method comprising irradiating the optical waveguide with electromagnetic radiation from an ultrashort pulse duration laser of sufficient intensity to cause a permanent change in an index of refraction within a core of the optical waveguide, where the irradiating step is terminated prior to erasure of a Bragg resonance, and heating the optical waveguide to a temperature and for a duration sufficient to substantially remove a non-permanent grating formed in the optical waveguide by the irradiating step.
    Type: Grant
    Filed: November 19, 2020
    Date of Patent: June 14, 2022
    Assignee: NATIONAL RESEARCH COUNCIL OF CANADA
    Inventors: Dan Grobnic, Stephen Mihailov, Robert Walker, Ping Lu, Huimin Ding, David Coulas, Cyril Hnatovsky
  • Patent number: 11353673
    Abstract: Present disclosure provides a method for grouping of a plurality of optical fibers using first coating layer and magnetic coating layer. The method of the present disclosure includes the step of coating of each of the plurality of optical fibers with a first coating layer and the step of coating of each of the plurality of optical fibers with a magnetic coating layer. Further, the method includes the step of applying magnetic field over the plurality of optical fibers for grouping of the plurality of optical fibers in a predefined manner. Furthermore, the first coating layer serves as a shock absorber to protect the plurality of optical fibers from physical damage.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: June 7, 2022
    Assignee: STERLITE TECHNOLOGIES LIMITED
    Inventor: Hemanth Kondapalli
  • Patent number: 11292928
    Abstract: An active energy ray-curable inkjet ink containing polymerizable compounds and a polymerization initiator, wherein the polymerizable compounds include at least 5 types of polyfunctional polymerizable compounds having molecular weights within a range from 150 to 500, and include substantially no monofunctional polymerizable compounds.
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: April 5, 2022
    Assignees: TOYO INK SC HOLDINGS CO., LTD., TOYOCOLOR CO., LTD
    Inventors: Yohei Konda, Hiroyuki Yoshida
  • Patent number: 11275206
    Abstract: An optical fiber comprising a core, a cladding disposed about the core, and a primary coating disposed about the cladding. The primary coating is cured during draw to at least eighty-five percent (85%) of the primary coating's fully cured primary-coating in situ modulus (P-ISM) value.
    Type: Grant
    Filed: July 15, 2020
    Date of Patent: March 15, 2022
    Assignee: OFS FITEL, LLC
    Inventors: Kariofilis Konstadinidis, Debra A Simoff
  • Patent number: 11248091
    Abstract: A curable silicone composition is disclosed. The curable silicone composition comprises: (A) a linear organopolysiloxane having at least two silicon atom-bonded alkenyl groups per molecule, wherein at least 5 mole % of all silicon atom-bonded organic groups are aryl groups; (B) an organopolysiloxane containing siloxane units represented by the general formula R13SiO1/2 where each R1 represents an independently selected monovalent hydrocarbon group, and siloxane units represented by the general formula SiO4/2, wherein the amount of alkenyl groups is at least 6% by weight; (C) an organopolysiloxane having at least two silicon atom-bonded hydrogen atoms per molecule; and (D) a hydrosilylation reaction catalyst. The curable silicone composition forms a cured product with little weight reduction, little change in hardness, and little crack generation after thermal aging.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: February 15, 2022
    Assignee: DOW TORAY CO., LTD.
    Inventors: Akito Hayashi, Tomohiro Iimura
  • Patent number: 11181685
    Abstract: The present disclosure provides optical fibers with an impact-resistant coating system. The fibers feature low microbending and high mechanical reliability. The coating system includes a primary coating and a secondary coating. The primary coating and secondary coating have reduced thickness to provide reduced radius fibers without sacrificing protection. The primary coating has a low spring constant and sufficient thickness to resist transmission of force to the glass fiber. The secondary coating has high puncture resistance. The outer diameter of the optical fiber is less than or equal to 200 ?m.
    Type: Grant
    Filed: January 5, 2021
    Date of Patent: November 23, 2021
    Assignee: Corning Incorporated
    Inventors: Arash Abedijaberi, Scott Robertson Bickham, Darren Andrew Stainer, Pushkar Tandon
  • Patent number: 11150425
    Abstract: A downhole strain sensing cable includes a core optical unit which includes a plurality of optical fibers. A fiber-reinforced polymer matrix layer surrounds and contacts the core optical unit. An extrusion layer surrounds and contacts the fiber-reinforced polymer matrix layer. An outer metal tube surrounds and contacts the extrusion layer.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: October 19, 2021
    Assignee: AFL Telecommunications LLC
    Inventors: Rajesh Kamath, Brett Villiger
  • Patent number: 11045254
    Abstract: A steerable laser probe may include a handle having a handle distal end and a handle proximal end, a plurality of actuation controls of the handle, a flexible housing tube having a flexible housing tube distal end and a flexible housing tube proximal end, and an optic fiber disposed within an inner bore of the handle and the flexible housing tube. An actuation of an actuation control of the plurality of actuation controls may gradually curve the flexible housing tube. A gradual curving of the flexible housing tube may gradually curve the optic fiber. An actuation of an actuation control of the plurality of actuation controls may gradually straighten the flexible housing tube. A gradual straightening of the flexible housing tube may gradually straighten the optic fiber.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: June 29, 2021
    Assignee: KATALYST SURGICAL, LLC
    Inventors: Gregg D Scheller, Matthew N Zeid
  • Patent number: 11036000
    Abstract: The present disclosure provides optical fibers with an impact-resistant coating system. The fibers feature low attenuation. The coating system includes a primary coating and a secondary coating. The primary coating and secondary coating have reduced thickness to provide low-diameter fibers without sacrificing protection. The primary coating has high tear strength and is resistant to damage caused by mechanical force. The secondary coating has high puncture resistance. The outer diameter of the optical fiber is less than or equal to 190 ?m.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: June 15, 2021
    Assignee: Corning Incorporated
    Inventors: Scott Robertson Bickham, Ming-Jun Li, Pushkar Tandon, Ruchi Tandon
  • Patent number: 11007011
    Abstract: One described aspect is an optical fiber comprising: a fiber core that extends along a fiber axis, is configured to transmit a laser energy along the fiber axis, and terminates at a distal end; a first cladding that extends along the fiber axis, is adjacent to the fiber core, and terminates at a distal end; a coating that extends along the fiber axis and terminates at a distal end, wherein the coating is a gold coating; a second cladding that surrounds a portion of the gold coating along the fiber axis, and terminates at a distal end; an outer jacket that extends along the fiber axis and terminates at a distal end; and a fiber tip. Associated laser systems are also disclosed.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: May 18, 2021
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Wen-Jui Ray Chia, Steven Yihlih Peng
  • Patent number: 10989871
    Abstract: A polymer waveguide/modulator including a lower cladding layer, a polymer core, an upper cladding layer, a first protection/barrier layer sandwiched between the lower cladding layer and the core, and a second protection/barrier layer sandwiched between the core and the upper cladding layer. The protection/barrier layers designed to protect the cladding layers and the core from solvents and gases and to prevent current leakage between the cladding layers and the core. The first protection/barrier layer is optically transparent and designed with a refractive index less than, greater than, or the same as the refractive index of the core and approximately equal to the refractive index of the lower cladding layer. The second protection/barrier layer is optically transparent and designed with a refractive index less than, greater than, or the same as the refractive index of the core and approximately equal to the refractive index of the upper cladding layer.
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: April 27, 2021
    Assignee: Lightwave Logic Inc.
    Inventors: Richard Becker, Michael Lebby, Youngwoo Yi
  • Patent number: 10976540
    Abstract: Described are optical fibers and scanning fiber displays comprising optical fibers. The disclosed optical fibers include a plurality of mass adjustment regions, such as gas-filled regions, positioned between a central waveguiding element and an outer periphery for reducing a mass of the optical fiber as compared to an optical fiber lacking the plurality of mass adjustment regions.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: April 13, 2021
    Assignee: Magic Leap, Inc.
    Inventors: Timothy Mark Dalrymple, Clinton Carlisle, Jason Schaefer, Andrew C. Duenner, Vaibhav Mathur
  • Patent number: 10883870
    Abstract: The fiber optic probe detects changes in ultrasound pressure in an immersion medium such as a liquid, a gas, or a solid, where the system includes an optical fiber probe having a fiber of the probe has a highly doped (or regular) core with a diameter in the range 5 to 10 ?m and a clad diameter equal to or more than 50 ?m; and the optical fiber tip has been modified in a D-shaped (or V-shaped) structure where the clad material has been removed from one side of the cylindrical fiber to the surface of the fiber core; then, this modified region of the fiber is coated, with a very thin layer of a metallic material, ranging from 3 to 10 nm.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: January 5, 2021
    Assignee: Drexel University
    Inventors: Mahmoud A. El-Sherif, Afshin S. Daryoush, Peter A. Lewin, Rupa Gopinath Minasamudram
  • Patent number: 10884182
    Abstract: Described herein are coated optical fibers including an optical fiber portion, wherein the optical fiber portion includes a glass core and cladding section that is configured to possesses certain mode-field diameters and effective areas, and a coating portion including a primary and secondary coating, wherein the primary coating is the cured product of a composition that possesses specified liquid glass transition temperatures, such as below ?82° C., and/or a viscosity ratios, such as between 25° C. and 85° C., of less than 13.9. Also described are radiation curable coating compositions possessing reduced thermal sensitivity, methods of coating such radiation curable coating compositions to form coated optical fibers, and optical fiber cables comprising the coated optical fibers and/or radiation curable coating compositions elsewhere described.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: January 5, 2021
    Assignee: DSM IP ASSETS B.V.
    Inventors: Paulus Antonius Maria Steeman, Xiaosong Wu, Adrianus Cornelis Bastiaan Bogaerds, Mark Petrus Franciscus Pepels
  • Patent number: 10815129
    Abstract: A rigid radiation reflector is fabricated from a powdered material transparent to light in a wavelength band extending from approximately 0.2 micrometers to at least 8 micrometers. The powdered material is dispersed in a liquid wherein the powdered material is at least 95% insoluble in the liquid. The resulting mixture is molded under pressure at room temperature and then sintered to generate a porous solid. The porous solid is cooled to room temperature. A surface of the porous solid is then coated with a light-reflecting metal.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: October 27, 2020
    Assignee: United States of America as Represented by the Administrator of NASA
    Inventors: Robert C. Youngquist, Tracy L. Gibson, Jan M. Surma, Jerry W. Buhrow, Mark A. Nurge
  • Patent number: 10801267
    Abstract: A drill has a stationary drive mechanism coupled to a rotating drill, the rotating drill having a serpentine optical fiber positioned on an inner shell having a serpentine groove with fiber Bragg gratings (FBGs) coupled to the inner shell and arranged parallel to the central axis of rotation for measurement of axial forces and also positioned circumferentially for measurement of drill torque. The FBGs are arranged on a single optical fiber and coupled to a broadband optical source such that reflected optical energy is directed to an interrogator for estimate of strain at each FBG. The FBG responses may also be examined dynamically to estimate material hardness during a drilling operation.
    Type: Grant
    Filed: June 8, 2018
    Date of Patent: October 13, 2020
    Assignee: Intelligent Fiber Optic Systems, Inc.
    Inventors: Richard J. Black, Behzad Moslehi
  • Patent number: 10775556
    Abstract: An optical fibre comprising: an optical waveguide comprising a glass core surrounded by a glass cladding; a primary coating surrounding the optical waveguide; a secondary coating, surrounding the primary coating, comprising a cured polymer material obtained by curing a curable coating composition comprising: (a) a polyester obtained by esterification of a reactant A selected from carboxylic acids, triglycerides, and mixtures thereof, having a C16-C24 aliphatic chain comprising at least two double bonds spaced by one carbon atom at most, with a reactant B selected from polyols having at least 3 hydroxyl groups, the polyols being thermally stable up to 300° C.; (b) an aromatic glycidyl epoxy resin; (c) an aliphatic polyether hardener containing from 8 to 64 hydroxy groups and/or from 2 to 4 epoxy groups; and (d) a secondary amine compound as curing agent. Preferably, the step of curing is a thermal curing, preferably up to 300° C.
    Type: Grant
    Filed: September 17, 2019
    Date of Patent: September 15, 2020
    Assignees: PEYSMIAN S.p.A., POLITECNICO DI MILANO
    Inventors: Lidia Terruzzi, Pamela De Martino, Attilio Citterio, Massimo Gola
  • Patent number: 10745590
    Abstract: The present disclosure relates to a photo-curable adhesive composition and the cured product thereof. The photo-curable adhesive composition according to the present disclosure comprises hydrophobic urethane (meth)acrylate polymers; a (meth)acrylate monomer or (meth)acrylamide monomer; a photoinitiator and a slip agent. The photo-curable adhesive composition according to the present disclosure exhibits good peelable property and optical property.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: August 18, 2020
    Assignee: Henkel AG & Co. KGaA
    Inventors: Hongyu Wang, Minghui Liu
  • Patent number: 10689521
    Abstract: Disclosed herein is a composition for coating an optical fiber comprising a free radically curable acrylate and/or a methacrylate functionalized oligomer having a density of less than 1.0 g/cm3; where the acrylate and/or the methacrylate functionalized oligomer has a functionality of 1 or more; a photoinitiator; and optionally a free radically curable acrylate and/or methacrylate diluent monomer that has a density of less than 1.0 g/cm3; where the coating composition is disposed and cured on an optical fiber; where the density of the cured coating is less than 1.0 g/cm3; and where the average functionality of the composition is greater than one.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: June 23, 2020
    Assignee: OFS FITEL, LLC
    Inventors: David Burgess, Adam Hokansson, Debra A Simoff, Andrei A Stolov, Jacob Wrubel
  • Patent number: 10669426
    Abstract: A dispersion that inorganic oxide microparticles may be dispersed at a high concentration in a solvent, a composition for film formation having high transparency, high refractive index and adhesion to a base layer. Inorganic oxide microparticles wherein an amphiphilic organosilicon compound having one or more selected from a polyoxyethylene group, a polyoxypropylene group, or a polyoxybutylene group as a hydrophilic group, and one or more selected from a C1-18 alkylene group or a vinylene group as a hydrophobic group bonded to a surface of modified metal oxide colloidal particles (C) having a primary particle diameter of 2 to 100 nm, the modified metal oxide colloidal particles wherein a surface of metal oxide colloidal particles (A) having a primary particle diameter of 2 to 60 nm as a nucleus is coated with a coating material (B) including metal oxide colloidal particles having a primary particle diameter of 1 to 4 nm.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: June 2, 2020
    Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Natsumi Murakami, Tomoki Furukawa, Yoshinari Koyama
  • Patent number: 10606078
    Abstract: An optical element for a display device that can be placed on the head of a user and generate an image as a virtual image. The optical element having a first part, which comprises an optically effective structure, and a second part connected to one another by an adhesive composition comprising a ultra material. The first part material comprises one or more cycloolefin polymers, the first and third material are different from one another, and the second part material and third material in each case comprise at least one organic polymer. The refractive index differences for at least one wavelength between 380 nm and 800 am between the first and the second material and between the second and the third material are in each case ?0.02. The method of producing the optical element and the display device comprising the optical element are also provided.
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: March 31, 2020
    Assignee: TOOZ TECHNOLOGIES GMBH
    Inventor: Karl-Heinz Schuster
  • Patent number: 10530114
    Abstract: The disclosed subject matter relates to a polarization-maintaining very large mode area (PM VLMA) Erbium-doped fiber and a polarization maintaining, Er-doped VLMA amplifier.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: January 7, 2020
    Assignee: United States of America as represented by the Administrator of NASA
    Inventors: Mark A. Stephen, Anthony W. Yu, Jeffrey W. Nicholson
  • Patent number: 10488613
    Abstract: An optical fiber distribution cable for servicing living units inside a MDU building, is formed by surrounding differently colored optical fibers with a jacket having a diameter of not more than about 3.5 mm. The jacket is opaque for hiding the colored fibers at least partially from view, thus reducing or eliminating any negative visual impact of the cable when installed. The colored cable fibers are arranged so that they are visible to an installer when only the cable jacket is cut open. Connection modules are mounted at corresponding living units, and a section of the cable is placed in each module. The jacket on a cable section in a given module is cut open, and a fiber assigned to the corresponding living unit is identified by color. The fiber is cut, and a length of the fiber is removed from the cable section and stored in the given module.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: November 26, 2019
    Assignee: OFS FITEL, LLC
    Inventors: Mark A Boxer, Daniel Hendrickson, Peter A Weimann
  • Patent number: 10481347
    Abstract: A fiber optic cable assembly includes a fiber optic cable having an end portion. The fiber optic cable includes an optical fiber and an outer jacket surrounding the optical fiber. The outer jacket is formed of a base material that hardens in response to exposure to an energy source. The end portion of the fiber optic cable has a hardness that is greater than a hardness of a remaining portion of the fiber optic cable. A connector assembly is engaged to the end portion of the fiber optic cable.
    Type: Grant
    Filed: February 14, 2012
    Date of Patent: November 19, 2019
    Assignee: CommScope Technologies LLC
    Inventor: Wayne M. Kachmar
  • Patent number: 10385224
    Abstract: A radiation curable ink jet composition contains an acrylate oligomer (A), a monofunctional monomer (B), and a predetermined monomer (C), in which the acrylate oligomer (A) has 1 to 3 acryloyl groups, the glass transition temperature of a homopolymer of the monofunctional monomer (B) is ?20° C. or more and 30° C. or less, and the content of the monofunctional monomer (B) is 40% by mass or more based on the entire radiation curable ink jet composition.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: August 20, 2019
    Assignee: Seiko Epson Corporation
    Inventors: Hitoshi Tsuchiya, Keitaro Nakano, Toshiyuki Yoda
  • Patent number: 10361383
    Abstract: A plastic substrate includes: a transparent plastic support member; a first inorganic layer on a surface of the plastic support member; and a first organic-inorganic hybrid layer on the first inorganic layer. A display device includes a display panel and a window on the display panel, the window including the plastic substrate.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: July 23, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jinnyoung Heo, Sanggu Kim, Hyemin Seo, Sungguk An, Dongjin Jeong
  • Patent number: 10302857
    Abstract: A single mode optical fiber including a germania doped silica central core region having outer radius r1 and refractive index ?1, a maximum refractive index ?1max, and 0.32%??1max?0.45%, and a core alpha profile (Core?). In various embodiments, the optical fiber also contains a cladding region including: (i) a second inner cladding region or ring region surrounding the first inner cladding region; or (ii) an inner cladding region or pedestal region surrounding the germania doped silica central core region. The corresponding resultant optical fibers exhibit a 22 m cable cutoff less than or equal to 1260 nm, a macrobending loss at 1550 nm of ?0.75 dB/turn on a 20 mm diameter mandrel, a zero dispersion wavelength, ?0, of 1300 nm??0?1324 nm, and a mode field diameter at 1310 nm of 8.2 microns?MDF1310 nm?9.6 microns.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: May 28, 2019
    Assignee: Corning Incorporated
    Inventors: Dana Craig Bookbinder, Ming-Jun Li, Snigdharaj Kumar Mishra, Pushkar Tandon
  • Patent number: 10273024
    Abstract: A multi-layer radiation reflector/emitter includes first and second materials. The first material is transparent to radiation in a wavelength spectrum ranging from approximately 0.2 microns to at last 6 microns. The first material is a self-supporting arrangement of randomized particles having an average dimension in a range of approximately 0.2 microns to approximately 0.4 microns and defining a fill factor of approximately 0.1 to approximately 0.5. The second material reflects radiation having a wavelength greater than approximately 2 microns.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: April 30, 2019
    Assignee: United States of America as Represented by the Adminstrator of NASA
    Inventors: Robert C. Youngquist, Mark A. Nurge
  • Patent number: 10267993
    Abstract: A fiber connector, comprising a housing comprising a region extending in a lengthwise direction an optical fiber disposed in the region, a first portion of the optical fiber comprising an inner core, a cladding layer surrounding the core, and a first outer polymer layer surrounding the cladding layer and a second portion of the optical fiber comprising the inner core, the cladding layer surrounding the core and a second outer polymer layer that is different from the first polymer layer.
    Type: Grant
    Filed: May 15, 2017
    Date of Patent: April 23, 2019
    Assignee: NLIGHT, INC.
    Inventor: Dahv A. V. Kliner
  • Patent number: 10241262
    Abstract: An optical fiber includes a glass fiber and a coating resin layer with which the glass fiber is covered, wherein the coating resin layer includes tin and a cured ultraviolet curable resin composition containing 2,4,6-trimethylbenzoyldiphenyl phosphine as a photoinitiator, a percentage of uncured components having a molecular weight of 1000 or less included in the coating resin layer is 15% by mass or less, and a fraction of an amount of a phosphorus-tin complex with respect to an amount of hydrocarbon on the surface of coating resin layer is 1000 ppm or less.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: March 26, 2019
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Noriaki Iwaguchi, Masuo Iida, Takashi Fujii
  • Patent number: 10197724
    Abstract: An optical fiber comprises a glass fiber having a core and a cladding with which the core is covered, and a coating resin layer with which the glass fiber is covered, the coating resin layer having a colored layer of a thickness of 10 ?m or more, wherein a change rate of a yellow index of the coating resin layer after aging due to temperature and humidity under an environment of 85° C. and 85% RH for 30 days is 5 or less per day.
    Type: Grant
    Filed: December 25, 2014
    Date of Patent: February 5, 2019
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Kumiko Tachibana, Takashi Fujii
  • Patent number: 10197471
    Abstract: A method for measuring a mechanical property of a coating on an optical fiber may include collecting Brillouin frequency shift data of the coating on the optical fiber, and determining the mechanical property of the coating by comparing the collected Brillouin frequency shift data with correlation data that may include a set of collected sample Brillouin frequency shift data and a set of collected sample mechanical property data of a plurality of sample materials. The sample materials may include a substantially identical sample composition including one or more curable polymers, be prepared with varying processing conditions, and have different mechanical property values. The coating on the optical fiber may include a material composition substantially identical to the sample materials composition. The set of collected sample Brillouin frequency shift data may be correlated with the set of collected sample mechanical property data to determine a quantitative relationship therebetween.
    Type: Grant
    Filed: September 21, 2016
    Date of Patent: February 5, 2019
    Assignee: Corning Incorporated
    Inventors: Stephan Lvovich Logunov, Kevin Alton Lewis
  • Patent number: 10185105
    Abstract: The flexible optical-fiber ribbon can be reversibly adapted to both planar and non-planar shapes (e.g., packed via folding or rolling) without damaging the optical-fiber ribbon or its constituent optical fibers.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: January 22, 2019
    Assignee: Prysmian S.p.A.
    Inventors: Brian G. Risch, Erin Jean Bowman
  • Patent number: 10118853
    Abstract: In one embodiment, a chalcogenide glass optical fiber is produced by forming a billet including a chalcogenide glass mass and a polymer mass in a stacked configuration, heating the billet to a temperature below the melting point of the chalcogenide glass, extruding the billet in the ambient environment to form a preform rod having a chalcogenide glass core and a polymer jacket, and drawing the preform rod.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: November 6, 2018
    Assignee: UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION, INC.
    Inventors: Ayman F. Abouraddy, Guangming Tao, Soroush Shabahang
  • Patent number: 10079189
    Abstract: Disclosed herein is the formation of p-type transparent conducting oxides (TCO) having a structure of MgxNi1-xO or ZnxNi1-xO. These structures disrupt the two-dimensional confinement of individual holes (the dominant charge carrier transport mechanism in pure NiO) creating three-dimensional hole transport by providing pathways for hole transfer in directions that are unfavorable in pure NiO. Forming these structures preserves NiO's transparency to visible light since the band gaps do not deviate significantly from that of pure NiO. Furthermore, forming MgxNi1-xO or ZnxNi1-xO does not lead to hole trapping on O ions adjacent to Zn and Mg ions. The formation of these alloys will lead to creation of three-dimensional hole transport and improve NiO's conductivity for use as p-type TCO, without adversely affecting the favorable properties of pure NiO.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: September 18, 2018
    Assignee: THE TRUSTEES OF PRINCETON UNIVERSITY
    Inventors: Emily Ann Carter, Nima Alidoust
  • Patent number: 9989699
    Abstract: An optical fiber comprising: (i) a core region comprising an outer radius r1, and 3.0?r1?7.0 microns and a relative refractive index ?1max and 0.32%??1max?0.5%; (b) a depressed index cladding region surrounding the core region comprising an outer radius r3 and a relative refractive index ?3 less than ?0.2%, and trench volume V3 wherein 45% ?-micron2?|V3|?200% ?-micron2; (c) a first outer cladding region surrounding the depressed index cladding region and comprising a relative refractive index ?4 and an outer radius r4; and (d) a second outer cladding layer comprising 5 wt %-20 wt % titania, a relative refractive index ?5, and a thickness TM, wherein 3 micron?TM?30 microns, and outer radius r5?65 microns; the optical fiber has a mode field diameter MFD1550 and 8 microns?MFD1550?10.5 microns, a cutoff wavelength ?1550 nm when bent 1 turn around a 2.5 mm radius mandrel, and a bending loss at 1550 nm when using a mandrel comprising a radius of 2.5 mm of ?1.0 dB/turn.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: June 5, 2018
    Assignee: Corning Incorporated
    Inventors: Kevin Wallace Bennett, Dana Craig Bookbinder, Douglas Llewellyn Butler, Ming-Jun Li, Pushkar Tandon
  • Patent number: 9964700
    Abstract: An optical fiber comprises a glass fiber, and a coating resin layer with which the glass fiber is covered, the coating resin layer has a plurality of layers, the plurality of layers includes a first layer being in contact with the glass fiber, and a longest diameter at ?40° C. of a void formed in the first layer is 100% or more and 300% or less of a longest diameter at 23° C. thereof, or a longest diameter at ?40° C. of a void formed in the first layer is 100% or more and 600% or less of a longest diameter at 23° C. thereof, and a Young's modulus of the first layer is 0.3 MPa or less.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: May 8, 2018
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Kumiko Tachibana, Takashi Fujii, Noriaki Iwaguchi
  • Patent number: 9964708
    Abstract: A bending compensation device for a waveguide, including a direction changing device configured to maintain a constant bending angle to the waveguide, a distal end of the waveguide having a first orientation, and the proximal end of the waveguide having a second orientation, and a motion device connected to the direction changing device, the motion device configured to move the direction changing device upon a movement of the waveguide.
    Type: Grant
    Filed: May 4, 2016
    Date of Patent: May 8, 2018
    Assignee: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)
    Inventors: Damien Loterie, Sebastien Walpen, Edgar Emilio Morales Delgado, Christophe Moser, Demetri Psaltis
  • Patent number: 9872747
    Abstract: A woven fiber optics dental post includes a post body and a woven fiber component. The post body includes a post face, an irradiation receiving portion, and a bottom. The woven fiber component is provided within the post body. The woven fiber component is formed by intertwining a plurality of fiber optics members. A light receiving end portion and a light emitting end portion are respectively composed of a plurality of light receiving ends and light emitting ends of the fiber optics members. The light receiving end portion is appeared on the irradiation receiving portion of the post body for having the woven fiber component receiving a light irradiated at the irradiation receiving portion, and the light emitting end portion is appeared on the post face and/or the bottom of the post body for having the light received by the woven fiber component transmitting to the light emitting end portion to be emitted out of the post face and/or the bottom.
    Type: Grant
    Filed: May 4, 2015
    Date of Patent: January 23, 2018
    Assignees: ILUMI SCIENCES INC.
    Inventors: Luke Lu, Kuan-Yu Lu, Toshihiro Tokizawa, I-Ching Lu
  • Patent number: 9841558
    Abstract: The present invention provides a two-layer structure colored optical fiber which includes a colored secondary coating layer improved in collectability and separability. The two-layer structure colored optical fiber in an embodiment of the present invention includes a glass optical fiber, a primary coating layer coating the glass optical fiber, and a colored secondary coating layer coating the primary coating layer. The secondary coating layer has such characteristics that a surface cure percentage is 99% or more at an infrared absorption peak of a wave number of 1407 cm?1 and a surface kinetic friction force in Knot Test is less than 0.075 N.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: December 12, 2017
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Hiroki Tanaka, Minoru Kasahara, Junpei Watanabe, Kenichi Suyama, Yoshihiro Arashitani
  • Patent number: 9829352
    Abstract: Distributions of a Brillouin frequency shift and a Rayleigh frequency shift in optical fibers set up in a material are measured from scattered waves of pulse laser light entered into the optical fibers, and distributions of pressure, temperature, and strain of the material along the optical fibers at a measurement time point are analyzed using coefficients that are inherent to the set up optical fibers and correlate pressure, temperature, and strain of material with the Brillouin frequency shift and the Rayleigh frequency shift.
    Type: Grant
    Filed: August 7, 2013
    Date of Patent: November 28, 2017
    Assignees: RESEARCH INSTITUTE OF INNOVATIVE TECHNOLOGY FOR THE EARTH, NEUBREX CO., LTD.
    Inventors: Ziqiu Xue, Yoshiaki Yamauchi, Kinzo Kishida
  • Patent number: 9817200
    Abstract: Provided is an optical fiber cable having excellent flame retardancy, long-term heat resistance and mechanical characteristics. An optical fiber cable according to the present invention comprises an optical fiber and a cladding layer that is provided on the outer circumference of the optical fiber. The cladding layer contains a chlorinated polyolefin resin (A) and a polyolefin resin (B).
    Type: Grant
    Filed: January 13, 2015
    Date of Patent: November 14, 2017
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Tsuyoshi Kimura, Yoshihiro Tsukamoto, Kouji Asano