Optical Fiber, Waveguide, Or Preform Patents (Class 264/1.24)
  • Patent number: 10274151
    Abstract: A light-guiding element (1) for a lighting unit, comprising a light-guiding body (5) having at least one light entry face (2) and at least one light exit face (3), wherein the at least one light entry face (2) comprises a plurality of entry sub-faces (2a) offset from one another at least in the light propagation direction (?x), wherein the entry sub-faces (2a) are oriented substantially normal to the light propagation direction (?x).
    Type: Grant
    Filed: November 10, 2014
    Date of Patent: April 30, 2019
    Assignee: ZKW Group GmbH
    Inventors: Anton Faffelberger, Bernd Eichinger
  • Patent number: 10241268
    Abstract: Aspects of the present application provide an optical device comprising a suspended optical component over a cavity, such as an undercut region in a substrate. The cavity is filled with a filler material. In some embodiments, the optical device and a method may be provided to fill the cavity with the filler material using a reservoir and a channel in the substrate connecting the reservoir to the cavity to be filled.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: March 26, 2019
    Assignee: Acacia Communications, Inc.
    Inventors: Long Chen, Christopher Doerr
  • Patent number: 10238453
    Abstract: An endovascular laser treatment device for causing closure of a blood vessel uses an optical fiber adapted to be inserted into a blood vessel. An inner sleeve is arranged around a distal portion of the optical fiber core such that both distal ends of the inner sleeve and the optical fiber core form an enlarged light emitting face. The enlarged emitting face provides substantially lower power density while providing the same amount of total energy during a treatment session. An outer sleeve arranged around the inner sleeve acts as a spacer to position the light emitting face away from an inner wall of the blood vessel. The enlarged light emitting face and the outer sleeve acting as a spacer reduces the possibility of thermal run-away and device damage, and reduce the possibility of vessel perforations, leading to less bruising, post-operative pain and other clinical complications.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: March 26, 2019
    Assignee: AngioDynamics, Inc.
    Inventors: William M. Appling, Ralph A. Meyer, Theodore J. Beyer, William C. Hamilton, Jr., Joe D. Brown
  • Patent number: 10228510
    Abstract: The invention concerns a Photonic Crystal Fiber (PCF) a method of its production and a supercontinuum light source comprising such PCF. The PCF has a longitudinal axis and comprises a core extending along the length of said longitudinal axis and a cladding region surrounding the core. At least the cladding region comprises a plurality of microstructures in the form of inclusions extending along the longitudinal axis of the PCF in at least a microstructured length section. In at least a degradation resistant length section of the microstructured length section the PCF comprises hydrogen and/or deuterium. In at least the degradation resistant length section the PCF further comprises a main coating surrounding the cladding region, which main coating is hermetic for the hydrogen and/or deuterium at a temperature below Th, wherein Th is at least about 50° C., preferably 50° C.<Th<250° C.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: March 12, 2019
    Assignee: NKT PHOTONICS A/S
    Inventors: Thomas Tanggaard Alkeskjold, Casper Laur Byg, Christian Jakobsen, Jens Kristian Lyngsøe, Kim G. Jespersen, Jeppe Johansen, Martin Dybendal Maack, Martin Erland Vestergaard Pedersen, Carsten L. Thomsen
  • Patent number: 10207228
    Abstract: A surface-modified separation membrane of the present invention comprises a separation membrane, and a coating layer formed on the surface of the separation membrane for improving the contamination resistance and chemical resistance of the separation membrane, wherein the coating layer is implemented with a nanoscale thickness of the coating layer in order to inhibit a decrease in permeation flux of the separation membrane before and after coating the coating layer, and comprises: dopamine for providing, to the coating layer, an adsorption force to be bound stably with the separation membrane; and a hydrophilic material which is bound to the dopamine through secondary bonding or cross-linking containing a hydrogen bond in order to inhibit the deterioration of the durability of the coating layer, and provides hydrophilicity to the surface of the separation membrane in order to protect the separation membrane from hydrophobic contaminants.
    Type: Grant
    Filed: October 1, 2014
    Date of Patent: February 19, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Changho Lee, Hyowon Kim, Jeongil Kye, Hobum Park
  • Patent number: 10111320
    Abstract: A display device includes a light source unit, a light guide plate including a light incident surface, an opposite surface, a light exit surface, and a light exit rear surface, a display panel provided on the light exit surface, a bottom chassis for housing the light guide plate, and an anti-static electricity member including a fluoride resin and contacting the bottom chassis, where the bottom chassis includes a bottom section and a sidewall section perpendicularly connected from the bottom section, and the sidewall section includes a first sidewall section more adjacent close to the light incident surface than the opposite surface, a second sidewall section, a third sidewall section, and the fourth sidewall section, and the anti-static electricity member is provided between the first sidewall section and the light source unit and contacting at least a portion of the first sidewall section.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: October 23, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sang-chul Byun, Hyuk-hwan Kim, Seokhyun Nam
  • Patent number: 10082460
    Abstract: A display device component includes an optical waveguide having a surface; a first material formed on a portion of the surface of the optical waveguide; and a second material formed on a portion of the first material. The first material has light scattering properties.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: September 25, 2018
    Assignee: Xerox Corporation
    Inventors: Chu-Heng Liu, David C. Craig
  • Patent number: 10001800
    Abstract: Techniques are disclosed relating to power management of an integrated circuit. In one embodiment, an integrated circuit includes a plurality of temperature sensors configured to measure a plurality of temperatures at different locations in the integrated circuit. The integrated circuit further includes a power management circuit configured to determine a set of guard bands based on a temperature difference determined using the plurality of temperatures. The power management circuit is configured to adjust, using the set of guard bands, a particular one of the plurality of temperatures, and to use the adjusted particular temperature to manage power consumption of the integrated circuit. In some embodiments, the power management circuit is configured to manage the power consumption by adjusting a voltage supplied to the integrated circuit, the adjusted voltage being based on the adjusted particular temperature.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: June 19, 2018
    Assignee: Apple Inc.
    Inventors: Toshinari Takayanagi, Yizhang Yang
  • Patent number: 9857530
    Abstract: Disclosed are robust packaging systems and methods for optical elements used in optical light pipes. One optical light pipe includes a housing having opposing first and second ends and a body that extends therebetween, an optical element arranged within the housing, and a reflective coating applied about an outer surface of the optical element.
    Type: Grant
    Filed: March 26, 2013
    Date of Patent: January 2, 2018
    Assignee: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Wei Zhang, Robert Atkinson, Michael Pelletier, William Soltmann, Christopher Michael Jones
  • Patent number: 9813801
    Abstract: A headphone system includes a first audio speaker assembly and a second audio speaker assembly, a connecting body extending between the first and second audio speaker assemblies, and a light-diffusing fiber coupled with the connecting body, the light-diffusing fiber having a glass core and a cladding. At least one of the glass core and a core-cladding interface includes a plurality of light scattering structures. A light source is optically coupled to the light-diffusing fiber and configured to emit light into the light-diffusing fiber. The light scattering structures are configured to scatter the emitted light and output the emitted light at least partially along a sidewall of the light-diffusing fiber.
    Type: Grant
    Filed: May 1, 2015
    Date of Patent: November 7, 2017
    Assignee: Corning Incorporated
    Inventors: Vineet Tyagi, Michael Lucien Genier
  • Patent number: 9753211
    Abstract: A light emitting device includes a substrate in which a specular reflection area that specularly reflects reaching light is disposed on one surface, a light emitting element disposed on the substrate to emit light at least from a side surface, and a light flux controlling member disposed over the light emitting element to control a distribution of light to be emitted from the light emitting element. The light flux controlling member includes a rear surface disposed closer to the substrate, an incidence surface being an inner surface of a recess opening toward the rear surface and receiving light emitted from the light emitting element, and an emission surface emitting at least a part of the light incident through the incidence surface toward an outside. An outer edge portion of the specular reflection area is positioned outside an opening edge portion of the recess.
    Type: Grant
    Filed: May 5, 2015
    Date of Patent: September 5, 2017
    Assignee: ENPLAS CORPORATION
    Inventors: Hiroshi Takatori, Yu Kamijo
  • Patent number: 9733416
    Abstract: The invention provides a lighting unit comprising a waveguide for providing first light (111) having a first spectral distribution and second light (121) having a second spectral distribution emanating from a waveguide (100) in different directions, wherein the first spectral distribution and second spectral distribution differ. For instance, the first light (111) and the second light (121) have different color temperatures.
    Type: Grant
    Filed: November 1, 2012
    Date of Patent: August 15, 2017
    Assignee: PHILIPS LIGHTING HOLDING B.V.
    Inventors: Rifat Ata Mustafa Hikmet, Ties Van Bommel
  • Patent number: 9720164
    Abstract: A lighting system can comprise an edgelit panel, for example a lightguide that may have a panel or slab shape with an edge that receives light from an array of light emitting diodes extending along the edge. The lightguide can guide the received light towards an opposing edge of the lightguide and gradually release light to provide illumination. An optic can manage light that reaches the opposing edge of the lightguide, for example via softening, spreading, concentrating, or diffusing the light. The optic can be mounted to or integrated in the opposing edge of the lightguide.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: August 1, 2017
    Assignee: Cooper Technologies Company
    Inventors: Jose Antonio Laso, Adam Moore Foy, Scott David Wegner
  • Patent number: 9678270
    Abstract: The invention concerns a multimode optical fiber, with a graded-index core co-doped with at least fluorine F and germanium GeO2 and a refractive index profile with at least two ?-values. According to the invention, the concentration of fluorine F at the core center ([F]r=0) is between 0 and 3 wt % and the concentration of fluorine F at the core outer radius ([F]r=a) is between 0.5 wt % and 5.5 wt %, with [F]r=a?[F]r=>0.4 wt %. For wavelengths comprised between 850 nm and 1100 nm, said multimode optical fiber has an overfilled launch bandwidth (OFL-BW) greater than 3500 MHz·km and a calculated effective modal bandwidth (EMBc) greater than 4700 MHz·km over a continuous operating wavelength range greater than 150 nm.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: June 13, 2017
    Assignee: Draka Comteq, B.V.
    Inventors: Marianne Bigot, Denis Molin, Pierre Sillard
  • Patent number: 9634187
    Abstract: Flip chip LEDs include a transparent substrate or carrier having an active material attached thereto and having a number of electrodes disposed along a common surface of the active material. The substrate may include a number of surface features disposed along a first surface adjacent the active material for improving light extraction from the active material, and includes a number of surface features along a second surface opposite the first surface for minimizing internal reflection of light through the substrate, thereby improving light extraction from the transparent substrate. The surface features on both surfaces may be arranged having a random or ordered orientation relative to one another. A plurality of such flip chip LEDs may be physically packaged together in a manner providing electrical connection with the same for a lighting end-use application.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: April 25, 2017
    Assignee: Bridgelux, Inc.
    Inventor: Vladimir A. Odnoblyudov
  • Patent number: 9396841
    Abstract: A noise suppression cable includes a plurality of twisted pair wires, an inclusion that includes an insulating material and a magnetic powder and separates the plurality of twisted pair wires, and a sheath that includes an insulating material and covers a periphery of the plurality of twisted pair wires and the inclusion.
    Type: Grant
    Filed: January 27, 2015
    Date of Patent: July 19, 2016
    Assignee: Hitachi Metals, Ltd.
    Inventors: Yosuke Sumi, Naofumi Chiwata, Katsuya Akimoto, Katsutoshi Nakatani, Kenji Ajima, Hiroshi Okikawa, Yasuharu Muto
  • Patent number: 9389524
    Abstract: A polycarbonate copolymer includes a repeating unit A represented by a formula (1) below and a repeating unit B represented by a formula (2) below, in which an abundance ratio represented by Ar1/(Ar1+Ar2) is in a range of 35 mol % to 75 mol % and an abundance ratio represented by Ar2/(Ar1+Ar2) is in a range of 25 mol % to 65 mol %,
    Type: Grant
    Filed: June 18, 2013
    Date of Patent: July 12, 2016
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Kengo Hirata, Hironobu Morishita
  • Patent number: 9322971
    Abstract: A method for manufacturing a light guide apparatus includes the following steps. A first mold and a second mold are provided. The first mold and the second mold respectively include a first molding surface and a second molding surface facing each other. A protrusion is disposed at the first or second molding surfaces. Sheet materials are provided. Each sheet material includes an opening corresponding to the protrusion, a first surface and a circuit layer disposed on the first surface. One of the sheet materials is disposed on the first mold with first surface facing the first mold. The first mold and the second mold are closed. An optical plastic material is injected into the space between the first and second molding surfaces to form a light guide plate having a via corresponding to the protrusion for embedding a light source. The sheet material is laminated on the light guide plate.
    Type: Grant
    Filed: January 27, 2015
    Date of Patent: April 26, 2016
    Assignee: Global Lighting Technologies Inc.
    Inventors: Chung-Lin Tsai, Ching-Ling Wang
  • Patent number: 9278490
    Abstract: The present invention relates to a method for manufacturing a two-dimensional polymer optical waveguide, which is used for manufacturing a two-dimensional optical waveguide through simplified processes using a single imprint original master.
    Type: Grant
    Filed: December 31, 2010
    Date of Patent: March 8, 2016
    Assignee: Pusan National University Industry-University Cooperation Foundation
    Inventors: Myung Yung Jeong, Chang Seok Kim, Jin Hwa Ryu, Seung Hun Oh, Tae Ho Lee, Sang Uk Cho
  • Publication number: 20150147041
    Abstract: An optical fiber includes a core, a cladding, and a thermally conductive member. The cladding is formed in a surrounding of the core. The thermally conductive member is formed in a surrounding of the cladding and includes a thermal conductivity higher than thermal conductivities of the core and the cladding.
    Type: Application
    Filed: October 16, 2014
    Publication date: May 28, 2015
    Inventors: Takashi Shimizu, Tsuyoshi Yamamoto, Jun Matsui, Eiji Yoshida
  • Publication number: 20150138835
    Abstract: Embodiments of the invention provide a light guide plate comprising a light guide layer and a reflective layer; a lower surface of the light guide being a reflective surface; an upper surface of the light guide layer being a stepped surface and comprising an upper step surface, a lower step surface and an inclined surface connecting the upper step surface and the lower step surface; wherein the lower step surface is a light exiting surface and the reflective surface is coated on the inclined surface. Embodiments of the invention further provide a method for manufacturing the light guide plate, a backlight module provided with such a light guide plate, and a display device provided with such a backlight module.
    Type: Application
    Filed: December 16, 2013
    Publication date: May 21, 2015
    Inventors: Tae Sung Kang, Young Man Kwon
  • Patent number: 9034222
    Abstract: A method for making optical connections with optical waveguides includes mounting the optical waveguides or a device comprising the optical waveguides, on a component carrier. A partial region of the optical waveguides is embedded in a volume of resist material. Positions of the optical waveguides to be connected are detected with reference to a coordinate system using a measuring system. Favorable, three-dimensional geometries are determined for optical waveguide structures for connecting the optical waveguides to each other at predetermined connecting locations and the optical waveguide structure geometries are converted to a machine-readable dataset. The optical waveguide geometries in the volume of the resist material are three-dimensionally structured using a direct-writing lithography device operating on the basis of the machine-readable dataset.
    Type: Grant
    Filed: February 23, 2012
    Date of Patent: May 19, 2015
    Assignee: KARLSRUHE INSTITUT FUER TECHNOLOGIE
    Inventors: Christian Koos, Wolfgang Freude, Nicole Lindenmann, Juerg Leuthold
  • Publication number: 20150131297
    Abstract: Variable index light extraction layers (100) that contain a plurality of microreplicated posts (120) are described. The variable index light extraction layers contain a plurality of microreplicated posts (120), a first region including a first lower-index substance (130) and a second region including a second higher-index substance (140). Optical films can use the variable index light extraction layers (100) in front lit or back lit display devices.
    Type: Application
    Filed: May 23, 2013
    Publication date: May 14, 2015
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: David S. Thompson, Vivian W. Jones, Michael A. Meis, Mikhail L. Pekurovsky, Kevin R. Schaffer, Audrey A. Sherman, Steven D. Solomonson, Matthew S. Stay, Joseph W. Woody, V, Zhaohui Yang
  • Publication number: 20150131943
    Abstract: To provide a tapered optical fiber having a good outer diameter accuracy and a high reproducibility, a manufacturing method of the tapered optical fiber, and a manufacturing system of the tapered optical fiber. The above-mentioned problem is solved by manufacturing system 1 of a tapered optical fiber comprising: shifter 11, 12 which reciprocates optical fiber 10 mounted at positions having a prescribed distance therebetween in the longer direction X of optical fiber 10 (the direction of the optical axis); and heating device 13 which heats the reciprocating optical fiber 10 at fixed position O, wherein shifter 13 includes a broadening unit which can increase the mounting distance (L1+L2) of the optical fiber while reciprocating the optical fiber. Shifter 11, 12 has at least two mounting unit which fix the optical fiber 10, and serves as a broadening unit controlling the two mounting unit independently or interlockingly.
    Type: Application
    Filed: May 24, 2013
    Publication date: May 14, 2015
    Inventors: Hidetoku Iida, Rumiko Osada, Hideaki Shiratori
  • Publication number: 20150131323
    Abstract: A method for manufacturing a light guide apparatus includes the following steps. A first mold and a second mold are provided. The first mold and the second mold respectively include a first molding surface and a second molding surface facing each other. A protrusion is disposed at the first or second molding surfaces. Sheet materials are provided. Each sheet material includes an opening corresponding to the protrusion, a first surface and a circuit layer disposed on the first surface. One of the sheet materials is disposed on the first mold with first surface facing the first mold. The first mold and the second mold are closed. An optical plastic material is injected into the space between the first and second molding surfaces to form a light guide plate having a via corresponding to the protrusion for embedding a light source. The sheet material is laminated on the light guide plate.
    Type: Application
    Filed: January 27, 2015
    Publication date: May 14, 2015
    Inventors: Chung-Lin Tsai, Ching-Ling Wang
  • Patent number: 9023256
    Abstract: A method of forming a single-mode polymer waveguide array connector that provides precise alignment of a plurality of cores of polymer waveguide arrays with respect to an absolute reference position, such as a guide pin hole in a ferrule, when the polymer waveguide array connector is connected to another polymer waveguide array connector or provides precise alignment of a plurality of cores of a polymer waveguide array and a fiber array with respect to the absolute reference position when the polymer waveguide array connector is connected to a single-mode fiber array connector. A plurality of cores of single-mode polymer waveguide arrays or single-mode fiber arrays is precisely aligned with each other. In addition, there is provided a combination of a plurality of molds, e.g., a first mold (A) and a second mold (B), used in a plurality of processes in a specific method.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: May 5, 2015
    Assignee: International Business Machines Corporation
    Inventors: Hidetoshi Numata, Masao Tokunari
  • Publication number: 20150092440
    Abstract: A Light guide panel, back light assembly and display apparatus are provided. According to an aspect of the inventive concept, there is provided the light guide panel which includes a top surface, a bottom surface, and four side surfaces, and one of the four side surfaces may be a light incident surface.
    Type: Application
    Filed: January 27, 2014
    Publication date: April 2, 2015
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyoung Joo KIM, Dong Yeon KANG, Rae Young KIM, Min Young SONG, Sung Kyu SHIM, Sang Duk LEE
  • Publication number: 20150085365
    Abstract: A resonant waveguide article, including: a polymeric substrate having at least one integral grating region, wherein the article has a low birefringence property of for example, from about 5 to 270 nm/cm, as defined herein. Also disclosed is a microplate including the resonant waveguide article, and an integral well plate bonded to the sensor article, as defined herein. Also disclosed are methods of making a sensor article, and a method of making and using the microplate including the sensor article, as defined herein.
    Type: Application
    Filed: March 26, 2013
    Publication date: March 26, 2015
    Applicant: Corning Incorporated
    Inventors: John Claude Cadotte, JR., John Stephen Peanasky, Christopher Lee Timmons, Srinivasa Rao Vaddiraju, Nikhil Baburam Vasudeo, Tyler Wezner
  • Publication number: 20150085465
    Abstract: A light guide and covering element, a motor vehicle instrument panel including the same, and a method for manufacturing the same are disclosed. The light guide and covering element include a first portion and a second portion. The first portion of the light guide and covering element are produced from a first transparent material. The second portion of the light guide and covering element are produced from a second opaque material. The first portion of the light guide and covering element and the second portion of the light guide and covering element are made from a single part.
    Type: Application
    Filed: May 2, 2013
    Publication date: March 26, 2015
    Inventor: Benoit Box
  • Publication number: 20150084217
    Abstract: A method of making a microplate, including: injection molding a resin to form a substrate (900) having a grating region feature on a surface of the substrate, and at least one micro-feature (910) in the vicinity of the grating region feature; waveguide treating (920) the resulting molded substrate; and over-molding the resulting waveguide treated molded substrate with a compatible resin to from the integral well plate (935) on the microplate. Also disclosed is a method of making a microplate, including: surface roughening to form a bonding area on a waveguide coated surface of a polymeric substrate having an integral grating region; and over-molding the resulting surface roughened substrate and a compatible resin to form the integral microplate, as defined herein.
    Type: Application
    Filed: March 26, 2013
    Publication date: March 26, 2015
    Applicant: Corning Incorporated
    Inventors: John Claude Cadotte, JR., Christopher Lee Timmons, Tyler Wezner
  • Publication number: 20150078712
    Abstract: A method of manufacturing an optical interconnect includes 3D printing a plurality of non-intersecting and spaced apart optical waveguides from a material that guides electromagnetic waves in the optical spectrum after being cross-linked or polymerized in a region activated by the 3D printing. At least some of the optical waveguides change direction at least once by about 90°. The method further includes encasing at least each end of the optical waveguides with a material having a lower index of refraction than the material from which the optical waveguides are formed by 3D printing, to secure the optical waveguides. A corresponding 3D printing apparatus is also described.
    Type: Application
    Filed: September 17, 2013
    Publication date: March 19, 2015
    Inventors: Robert Brunner, Qing Xu, Stephane Lessard, Martin Julien
  • Publication number: 20150069644
    Abstract: A light guide system includes a light guide and a carrier substrate having a barrier layer disposed therebetween. The barrier layer is introduced during a dual injection process to provide a permeable barrier between a first resin, used to form the light guide, and a second resin used to form the carrier substrate. The barrier layer allows for the first and second resins to bond, while acting as a wet-out inhibitor between the resins. The molded dual injection light guide system of the present invention provides for a unitary light guide and carrier substrate that has been molded with a barrier layer such that wetting out of a surface of the light guide is prevented along with the deleterious effects wetted out surfaces have on light transmission.
    Type: Application
    Filed: September 11, 2013
    Publication date: March 12, 2015
    Applicant: Ford Global Technologies, LLC
    Inventors: Jason Robert Emrich, Inshirah Hillawi, Megan May Lovejoy, Steven J. Antilla
  • Publication number: 20150061167
    Abstract: Flexible unitary lightguide and a method of making the same are disclosed. The lightguide includes a structured input side that includes a first pattern having smaller features superimposed on a second pattern having larger features. The lightguide further includes a structured top surface that includes a first region and a different second region. The first region includes a plurality of discrete light extractors for extracting light that propagates within the flexible unitary lightguide by total internal reflection. The second region includes a taper portion for directing light from the structured input side to the first region. The light extractors form a periodic array that has a first period along the length of the flexible unitary lightguide. The first period is such that substantially no visible moire fringes occur when the flexible unitary lightguide is used as a backlight in a pixelated display.
    Type: Application
    Filed: November 10, 2014
    Publication date: March 5, 2015
    Inventors: Jeffrey L. Solomon, Brian A. Kinder, Gary T. Boyd
  • Publication number: 20150055373
    Abstract: A light guide plate includes a light incident surface, a bottom surface connected to the light incident surface, and a light output surface facing away from the bottom surface. The light output surface is a roughened surface. A number of microstructures are formed on the light output surface. A method for making the light guide plate is also described.
    Type: Application
    Filed: August 25, 2014
    Publication date: February 26, 2015
    Inventor: YUNG-CHANG TSENG
  • Patent number: 8961839
    Abstract: A production method of an optical waveguide includes: preparing a laminated body that includes a first clad layer and at least a core layer laminated on the first clad layer; forming a light propagating optical waveguide core by cutting the core layer by use of a dicing saw from a side where the core layer is laminated while intruding an edge of a blade portion of the dicing saw into the first clad layer so as to partially cut the first clad layer; and embedding at least a cut portion of the laminated body with a second clad layer.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: February 24, 2015
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Toshihiko Suzuki, Keishi Shimizu, Kazutoshi Yatsuda, Shigemi Ohtsu, Akira Fujii, Eiichi Akutsu
  • Publication number: 20150048532
    Abstract: An apparatus for forming a serration pattern on a light guide plate having a top surface emitting a light, a bottom surface opposite to the top surface, and at least one side surface, arranged between the top surface and the bottom surface, as an incident surface. The apparatus includes a base plate supporting the bottom surface of the light guide plate; a fixing plate facing the top surface of the light guide plate with a predetermined interval; and a serration core transferring the serration pattern onto the at least one side surface of the light guide plate by a thermal pressing process causing a thickness deformation of the light guide plate. Further, the fixing plate induces a changed thickness of the light guide plate to be uniform by limiting a thickness change amount of the light guide plate to the predetermined interval.
    Type: Application
    Filed: August 15, 2014
    Publication date: February 19, 2015
    Inventors: Jongmoon YOON, Minkoo KIM, Taehong KIM, Jihyun JUNG
  • Publication number: 20150048243
    Abstract: An apparatus for estimating at least one parameter in a downhole environment includes: an optical fiber configured to be disposed in a borehole, the optical fiber having a property that causes intrinsic backscattering of signals transmitted therein. The property varies along a length of the optical fiber to generate a variable intensity of the backscattering, the intensity of backscattering varying along the optical fiber as a function of distance from an end of the optical fiber. The apparatus also includes a light source configured to send an optical signal into the optical fiber; and a detector configured to receive a return signal including backscattered signals.
    Type: Application
    Filed: July 2, 2014
    Publication date: February 19, 2015
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Brooks A. Childers, Roger Glen Duncan
  • Publication number: 20150043878
    Abstract: A multi-core optical fiber may include a cladding with a cross section having a central region and an outside diameter. Multiple transmission cores are arranged symmetrically within the central region of the cladding, extending parallel to a central axis of the multi-core optical fiber. Multiple alignment cores are arranged within the cladding, extending parallel to the central axis of the multi-core optical fiber and near the outside diameter of the cladding so that each of the multiple alignment cores are visible through a side view of the cladding. Ends of similarly configured multi-core optical fibers may be mated and aligned. Alignment cores of a first multi-core optical fiber may be aligned with alignment cores of a second multi-core optical fiber using a side view of the mating interface. Aligning the alignment cores causes multiple transmission cores with the multi-core optical fibers to also align.
    Type: Application
    Filed: August 6, 2013
    Publication date: February 12, 2015
    Applicant: Verizon Patent and Licensing Inc.
    Inventor: David Z. Chen
  • Publication number: 20150036382
    Abstract: Optical elements of a light guide plate are formed by repeatedly aligning convex parts in a longitudinal direction of the optical elements. Concave/convex shaped parts whose recess amount and/or protrusion amount are not constant are formed by three-dimensional curved surfaces that constitute the convex parts. An optical path of light that enters from an incident light surface of the light guide plate is modified by the concave/convex shaped parts that constitute the optical elements as the light progresses through the inside of the light guide plate, and thereby the light is diffused. Further, since the recess amount and/or protrusion amount of the concave/convex shaped parts are not constant, the optical path of light progressing through the inside of the light guide plate is modified randomly, and therefore a light diffusing effect is efficiently exhibited.
    Type: Application
    Filed: June 23, 2014
    Publication date: February 5, 2015
    Inventors: Reishi SHIMAOKA, Shinji KAWAI
  • Patent number: 8945669
    Abstract: The invention provides an extrusion material supply device suitable for use in melt extrusion molding, and a method for manufacturing an optical transmission body, in which a deterioration of an optical signal transmission loss is extremely small, and productivity intrinsic to an extrusion molding method is provided in combination. An extrusion material supply device 1 includes: a vertical hopper 2, which has a cooling unit 3 and a heat melting unit 4 continuous with a lower portion thereof, and houses a material rod R; cooling means 5 for cooling the cooling unit 3; an electric heater 6 that heats the heat melting unit 4; and gas pressurizing means 7 for sequentially supplying molten plastics M to a metal die by a gas pressure. The heat melting unit 4 is formed into a cylinder shape in which an inner diameter is larger than an inner diameter of the cooling unit 3 arranged above, and enables the molten plastics M to spread in the heat melting unit 4.
    Type: Grant
    Filed: January 26, 2010
    Date of Patent: February 3, 2015
    Assignees: Sekisui Chemical Co., Ltd., Keio University
    Inventors: Tazuru Okamoto, Hirotsugu Yoshida, Yasuhiro Koike
  • Publication number: 20150027442
    Abstract: A device for monitoring gases present in a breathing mask. A gas sensing element carried by the breathing mask senses the partial pressure of a gas present in the breathing mask and outputs signals corresponding to the sensed gas partial pressure. The gas sensing element may comprise a gas-sensing material configured to emit, in response to light excitation, an optical signal at an intensity corresponding to the partial pressure of a sensed gas.
    Type: Application
    Filed: July 23, 2013
    Publication date: January 29, 2015
    Applicant: Lockheed Martin Corporation
    Inventors: Martin Anthony Kearney-Fischer, Sarah Kathleen Mottino, Charles J. Chase
  • Publication number: 20150032190
    Abstract: Embodiments of the present invention include a fiber-optic tissue illuminator suitable for illuminating large areas of central and peripheral neural tissue, e.g., in a primate brain. Certain examples of the tissue illuminator have a light delivery surface that may be about two orders of magnitude larger than that of a conventional optical fiber of equal diameter. This illuminator allows for substantially more light to be delivered to brain tissue with no more penetration damage than a conventional fiber. For example, an illustrative illuminator can deliver light over a length of at least 3 mm in neural tissue, such as a macaque cortex, as shown by the presence of a light artifact in the local field potential. An exemplary illuminator can also be used with a previously injected viral vector (e.g., halorhodopsin) of optogenetic applications, like silencing neurons distributed over an extended region (e.g., a 3 mm length) of neural tissue.
    Type: Application
    Filed: July 22, 2014
    Publication date: January 29, 2015
    Applicant: Massachusetts Institute of Technology
    Inventor: Leah Christine Acker
  • Patent number: 8940199
    Abstract: The present technology provides an illustrative method for preparing fibers with desirable optical characteristics. The method includes providing a fiber that comprises a core layer and a cladding layer located around the core layer. The method further includes applying a nanostructure template to the cladding layer to form one or more photonic nanostructures having nanostructure scales and compressing the core layer to cause the core layer to bulge and form air gaps between the core layer and the one or more photonic nanostructures.
    Type: Grant
    Filed: October 17, 2011
    Date of Patent: January 27, 2015
    Assignee: Empire Technology Development LLC
    Inventors: Hemanshu D. Bhatt, Sunit D. Tyagi
  • Publication number: 20150022761
    Abstract: A light guide plate transfer molding method for performing transfer molding of a light guide plate using a first mold and a second mold, includes performing, on a resin material, transfer molding of a first pattern and a second pattern that are provided on a transfer face of the first mold. The first pattern changes with a specific interval P serving as one period. The second pattern changes with one or two or more periods that correspond to 1/Na of the interval P. Na is a positive integer that satisfies Na?m, m being a specific positive integer.
    Type: Application
    Filed: June 17, 2014
    Publication date: January 22, 2015
    Inventor: Gouo Kurata
  • Patent number: 8927680
    Abstract: A molded article produced by molding a coating solution that contains a polycarbonate resin represented by the following formula (1) has excellent transparency, good water repellency and oil repellency, a lower friction coefficient and excellent surface lubricity, having a capability of improving abrasion resistance. In the formula (1), Rf represents a perfluoroalkyl group having 5 or more carbon atoms and 11 or more fluorine atoms or a perfluoroalkyl group having a specific structure; and W represents a divalent group including therein a specific structural unit.
    Type: Grant
    Filed: August 16, 2012
    Date of Patent: January 6, 2015
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Hironobu Morishita, Kengo Hirata
  • Publication number: 20150003778
    Abstract: Provided is an optical printed circuit board, including: a first insulating layer on which at least one receiving groove with an inclined angle on at least one end is formed; an optical waveguide which is formed in the receiving groove of the first insulating layer; and a second insulating layer which is formed on the first insulating layer and buries the optical waveguide formed in the receiving groove.
    Type: Application
    Filed: November 29, 2012
    Publication date: January 1, 2015
    Inventor: Sang Seon Ha
  • Publication number: 20140373963
    Abstract: An elongate element (300) for a flexible pipe body (100) and method of producing the same are disclosed. The method includes inserting a first fibre element (304) in a crush resistant elongate tube element (302), wherein the first fibre element is suitable for monitoring at least one of strain, temperature and acoustic properties; inserting a further fibre element (306) in the tube element, wherein the further fibre element is suitable for curing a matrix material (308); and inserting a matrix material into the tube element to fill at least a length of the tube element such that the first and further fibres elements within that length are surrounded by matrix material.
    Type: Application
    Filed: October 24, 2012
    Publication date: December 25, 2014
    Inventors: Geoffrey Stephen Graham, George Henry Frank Hatherley
  • Publication number: 20140369068
    Abstract: Even though no light source is provided in the vicinity of each curved apex of a main face, the brightness difference depending on the location on the main face is reduced, and a light guide plate that contributes to electric power saving can be provided. A display and a traffic sign including the display that can keep a small brightness difference depending on the location on the main face, and reduce the power consumption. The ratio of the area of the first diffusion dots and second diffusion dots within the second diffusion region is greater than the ratio of the area of the first diffusion dots within the first diffusion region. Even though no light source unit is provided at a curved section, the brightness difference (the unevenness of brightness) depending on the location on the entire main face is reduced, and electric power saving can be achieved.
    Type: Application
    Filed: July 24, 2012
    Publication date: December 18, 2014
    Applicant: S.K.G. CO., LTD.
    Inventors: Mitsuhide Sakamoto, Junichi Ando
  • Patent number: 8912302
    Abstract: A curable silicone composition for sealing an optical semiconductor element, comprising: (A) an organopolysiloxane that has at least two silicon-bonded vinyl groups in one molecule, that has C1-10 alkyl for the other silicon-bonded organic groups therein, and that lacks a siloxane unit represented by the following formula: SiO4/2; (B) an organopolysiloxane represented by an average unit formula; (C) an organopolysiloxane that has at least three silicon-bonded hydrogen atoms in one molecule, that has C1-10 alkyl for the silicon-bonded organic groups therein, and that contains from 0.7 to 1.6 mass % of silicon-bonded hydrogen atoms; and (D) a hydrosilylation reaction catalyst, wherein a viscosity at 25° C. and a viscosity at 100° C. of this composition lacking component (D) reside in a specific relationship, can efficiently perform resin sealing by transfer molding or compression molding while exhibiting an excellent moldability and can provide a cured product that has a low surface tack.
    Type: Grant
    Filed: September 18, 2012
    Date of Patent: December 16, 2014
    Assignee: Dow Corning Toray Co., Ltd.
    Inventors: Yusuke Miyamoto, Makoto Yoshitake
  • Publication number: 20140361452
    Abstract: A method of making a taper in an optical fiber including: securing the optical fiber in a first holder and a second holder, heating the optical fiber, and moving the first holder in a first direction with a pulling speed and at the same time moving the second holder in the first direction with a feeding speed, wherein a ratio of the pulling speed to the feeding speed is greater than one.
    Type: Application
    Filed: January 22, 2013
    Publication date: December 11, 2014
    Applicant: AFL Telecommunications LLC
    Inventor: Wenxin Zheng