Input/output Coupler Patents (Class 385/31)
  • Patent number: 8983249
    Abstract: An optical fiber combiner 1 has: a plurality of input optical fibers 20; a plurality of divergence angle reducing members 50 which lights emitted from the respective input optical fibers 20 enter and which emits the lights from the input optical fibers 20 at divergence angles made lower than divergence angles upon entrance; a bridge fiber 30 which the lights emitted from the respective divergence angle reducing members 50 enter and which has a tapered portion 34 which has a portion in which the lights propagate and a diameter of which is gradually reduced apart from a divergence angle reducing member 50 side; and an output optical fiber 40 which a light emitted from a side of the bridge fiber 30 opposite to the divergence angle reducing member 50 side enters.
    Type: Grant
    Filed: March 21, 2014
    Date of Patent: March 17, 2015
    Assignee: Fujikura Ltd.
    Inventors: Yoshikiyo Noguchi, Kensuke Shima
  • Publication number: 20150069223
    Abstract: A light guide member for an object detection apparatus for detecting an object adhered on a light translucent member based on change of quantity of reflection light received from the light translucent member includes a detection face where light exits to the light translucent member and reflection light reflected from the light translucent member enters, the detection face including a detection area where a part of the reflection light to enter the detection unit passes through, and a non-detection area where remaining part of the reflection light not to enter the detection unit passes through; a first intervening member disposed on the detection face attachable to the light translucent member via the first intervening member; and a second intervening member disposed on the detection face attachable to the light translucent member via the second intervening member. The first intervening member has flexibility greater than flexibility of the second intervening member.
    Type: Application
    Filed: August 25, 2014
    Publication date: March 12, 2015
    Applicant: RICOH COMPANY, LTD.
    Inventor: Kenichi Yoshimura
  • Patent number: 8977085
    Abstract: A method of forming an optical fiber tip, the method including, roughening at least part of an end portion of the optical fiber; and, etching the roughed end portion to thereby form an optical fiber tip.
    Type: Grant
    Filed: November 3, 2009
    Date of Patent: March 10, 2015
    Assignee: The University of Queensland
    Inventors: Laurence James Walsh, Roy George
  • Patent number: 8971677
    Abstract: An optical 90-degree hybrid circuit includes: first and second optical splitters for receiving and splitting a first and second light beam into two, respectively; a first optical coupler for generating an interfering light beam by multiplexing one of the light beams split by the first optical splitter and the second optical splitter; and a second optical coupler for generating an interfering light beam by multiplexing another one of the light beams split by the first optical splitter and the second optical splitter. The first optical splitter includes an optical coupler configured to output two light beams having equal phases, and the second optical splitter includes an optical coupler configured to output two light beams having a phase difference of 90 degrees.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: March 3, 2015
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Yohei Sakamaki, Toshikazu Hashimoto, Yusuke Nasu, Kuninori Hattori, Hiroshi Takahashi
  • Patent number: 8971679
    Abstract: An apparatus for passive alignment of optical devices comprises a substrate including a trench in a top surface thereof, where the trench has a first end positioned at an edge of the substrate and a second end positioned at an interior region of the substrate, and a lens disposed on the top surface of the substrate adjacent to the second end of the trench. The apparatus further includes a top holder having a longitudinal indentation in a bottom surface thereof for mounting an optical fiber. The longitudinal indentation is sized to fit a top portion of the optical fiber such that a bottom portion of the optical fiber extends below the bottom surface of the top holder when the optical fiber is mounted therein. One or both of the substrate and the top holder include one or more spacer features configured for three-dimensional (3D) alignment of the lens with the optical fiber when the top holder is brought into contact with the substrate.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: March 3, 2015
    Assignee: Optonet Inc.
    Inventors: Seng-Tiong Ho, Yingyan Huang
  • Patent number: 8968987
    Abstract: A method, system and computer program product for implementing an enhanced optical mirror coupling and alignment mechanism utilizing two-photon resist. An initial placement is provided for one or more vias on a printed circuit board. A via is filled with a resist. A series of tightly focused light beams suitably exposes the resist at varying depths in the via, the varying depths defining a sloped polymer in the via after removing resist that had not been at the focus of the light beam. The sloped polymer is coated with reflective material to reflect light into or out of the via.
    Type: Grant
    Filed: January 11, 2012
    Date of Patent: March 3, 2015
    Assignee: International Business Machines Corporation
    Inventors: Emmanuel Atta, Darcy Berger, John R. Dangler, Matthew S. Doyle, Jesse Hefner, Thomas W. Liang
  • Patent number: 8971678
    Abstract: Spacer resin pattern layer which precisely aligns a light-emitting element or a light-receiving element relative to both a waveguide pattern layer and electrical circuit pattern layer from the semiconductor wafer level. A substratum of resin having a through-hole provided for electrical communication with an electrical circuit pattern layer is formed on a semiconductor wafer. A truncated cone-shaped three-dimensional reflective surface is formed to guide the emitted light towards or received light from a waveguide pattern layer. A metal film is deposited planarly in a predetermined range from the center when positioned relative to the position of the through-hole. A truncated cone-shaped mold is stamped in the center. By modifying the direction of the light using this tapered structure, the precision tolerance is increased and optical loss is reduced.
    Type: Grant
    Filed: April 16, 2013
    Date of Patent: March 3, 2015
    Assignee: International Business Machines Corporation
    Inventors: Daiju Nakano, Masao Tokunari, Kazushige Toriyama, Yutaka Tsukada
  • Publication number: 20150055915
    Abstract: Light-coupling apparatus and methods for light-diffusing optical fibers are disclosed. The light-coupling apparatus includes a light-diffusing fiber bundle having an end section made up of tightly packed cores by removing the claddings. The spaces between the cores are filled with a material having a refractive index equal to or less than that of the cores. A light-emitting diode light source can be butt-coupled to the bundled-core end of the light-diffusing fiber bundle or can be coupled thereto via a reflective concentrator. A method of forming a flat and smooth end on a cleaved fiber that has a rough end is also disclosed.
    Type: Application
    Filed: August 23, 2013
    Publication date: February 26, 2015
    Applicant: Corning Incorporated
    Inventors: Stephan Lvovich Logunov, Nikolay Timofeyevich Timofeev
  • Patent number: 8965156
    Abstract: A beam combiner is disclosed that comprises a planar lightwave circuit that is based on undoped silicon nitride-based surface waveguides, wherein the planar lightwave circuit comprises a plurality of input ports, a mixing region, and an output port, and wherein the mixing region comprises a plurality of directional couplers that are arranged in a tree structure. Embodiments of the present invention are capable of combining a plurality of light signals characterized by disparate wavelengths on irregular spacings with low loss. Further, the present invention enables high-volume, low cost production of beam combiners capable of combining three or more light signals into a single composite output beam.
    Type: Grant
    Filed: August 12, 2011
    Date of Patent: February 24, 2015
    Assignee: Octrolix BV
    Inventors: Edwin Jan Klein, Ronald Dekker, Hindrik F. Bulthuis
  • Patent number: 8961038
    Abstract: An opto-electronic device includes an optical engine module and an electrical socket. The optical engine module includes an optical engine, an optical transmission interface for coupling with an optical device and an electrical transmission interface, the electrical transmission interface having electrical pads. The electrical socket includes a plurality of BGA terminals, each terminal having a module-connecting end and a board-connecting end. The electrical transmission interface is removeably assembled in the electrical socket and the electrical pads contact the module-connecting ends of the electrical socket.
    Type: Grant
    Filed: January 21, 2014
    Date of Patent: February 24, 2015
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventors: Jim Zhao, Yuan-Chieh Lin, An-Jen Yang, Pei Tsao, Yin-Tse Kao, Ashish Raheja
  • Patent number: 8965161
    Abstract: A decohered laser light production system is provided. The decohered laser light system comprises a laser source. The system further comprises a multi-mode fiber having an input face, an output face and a body for propagating light from the input face to the output face, the input face arranged to accept laser light from the laser source, the body comprising a length such that laser light is generally decohered when exiting the output face.
    Type: Grant
    Filed: October 5, 2011
    Date of Patent: February 24, 2015
    Assignee: Christie Digital Systems Inc.
    Inventor: John Domm
  • Publication number: 20150049984
    Abstract: A multimoded interference coupler may include: first and second inputs to receive first and second optical signals such that light is not supplied through any portion of a first gap extending between the first and second inputs; first and second outputs to provide first and second components associated with the first and second optical signals, such that light is not output through any portion of a second gap extending between the first and second outputs. The first and second inputs may be separated by a first distance. The first and second outputs may be separated by the first distance. The first input and the second output may be separated by a second distance being different than a third distance separating the second input and the first output. The first and second components may have a phase difference based on a difference between the second and third distances.
    Type: Application
    Filed: August 16, 2013
    Publication date: February 19, 2015
    Applicant: Infinera Corporation
    Inventor: Masaki KATO
  • Patent number: 8958669
    Abstract: The present disclosure relates to a method for manufacturing end microlenses of individual optical fibers which are part of a bundle or a multi-core fiber, including depositing a drop of a photopolymerizable solution on a first end of the bundle; adapting the size of the drop; applying light centered on a predetermined wavelength onto a second end of the bundle in order to selectively polymerize the drop; rinsing the first end using a methanol solution in order to obtain a network of individual optical fibers, each one of which is provided with a microlens at the first end of the multi-core fiber, the microlenses being physically separated from one another. The disclosure additionally relates to a bundle of microlensed fibers obtained by the method, as well as to the use of such a bundle, for example in medical or multiplexed imaging and/or in the coupling of optical fibers.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: February 17, 2015
    Assignee: Universite de Technologie de Troyes
    Inventors: Jérôme Plain, Renaud Bachelot, Pascal Royer, Xinhua Zeng, Safi Jradi
  • Patent number: 8958668
    Abstract: A plasmonic transducer includes at least two metal elements with a gap therebetween. The metal elements are elongated along a plasmon-enhanced, near-field radiation delivery axis. Cross sections of the metal elements in a plane normal to the delivery axis vary in shape along the delivery axis. A waveguide is disposed along an elongated side of the plasmonic transducer. The waveguide is optically coupled to the plasmonic transducer along the elongated side.
    Type: Grant
    Filed: September 13, 2011
    Date of Patent: February 17, 2015
    Assignee: Seagate Technology LLC
    Inventors: Chubing Peng, Yongjun Zhao
  • Patent number: 8958667
    Abstract: An optical bus (130) of an integrated circuit (100) comprises: a polymer waveguide (112), a micromirror (114, 116), and an optical coupler (120). The polymer waveguide (112) is disposed in a via (110) formed through at least one die layer (102, 104, 106) of the integrated circuit (100) comprising an active circuit (210). The micromirror (114) is disposed adjacent to the via (110) and optically coupled to the polymer waveguide (112). The optical coupler (120) is connected to the polymer waveguide (112) to couple the active circuit (210) to the optical bus (130). A stacked integrated circuit (100) is described comprising such an optical bus (130). A method (800) of fabricating a rear 45° micromirror on a silicon substrate that can be used in the optical bus (130) is also described. Furthermore, alignment/lock mechanisms for use in a stacked integrated circuit comprising first and second silicon substrates are described.
    Type: Grant
    Filed: July 4, 2011
    Date of Patent: February 17, 2015
    Inventors: Chee Yee Kwok, Aron Michael, Yiwei Xu
  • Patent number: 8953911
    Abstract: In part, the invention relates to a single clad fiber to multi-clad optical fiber connector for use in applying excitation light to a sample and obtaining reflected light from the sample. The connector can include a dual clad optical fiber portion and a single clad optical fiber portion in optical communication with the dual clad optical fiber portion. In one embodiment, a core of the dual clad optical fiber portion and a core of the single clad optical fiber portion have substantially similar indices of refraction. In one embodiment, excitation light is propagated by the core of the dual clad optical fiber. Further, in one embodiment, light reflected by the sample is propagated by the first cladding layer of the dual clad optical fiber portion.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: February 10, 2015
    Assignee: Lightlab Imaging, Inc.
    Inventors: Chenyang Xu, Joseph M. Schmitt
  • Publication number: 20150036975
    Abstract: A substrate is composed of a first material. A photonic structure is composed of the first material connected to one or more support structures composed of the first material between the photonic structure and a surface of the substrate, with at least one of the support structures supporting a first section of a strip of the photonic structure. The first section has a width that is wider than a width of a second section of the strip and has a length that is at least about twice the width of the second section of the strip.
    Type: Application
    Filed: July 30, 2013
    Publication date: February 5, 2015
    Inventors: Michael J. Burek, Marko Loncar
  • Publication number: 20150036976
    Abstract: The invention relates to a solar concentrator made of a transparent material, wherein the solar concentrator comprises a light incoupling surface that may be spherical or non-spherical, a light outcoupling surface, and a light guide component arranged between the light incoupling surface and the light outcoupling surface, the light guide component being delimited between the light incoupling surface and the light outcoupling surface by a light guide component surface.
    Type: Application
    Filed: December 5, 2012
    Publication date: February 5, 2015
    Inventors: Wolfram Wintzer, Lars Arnold, Hagen Goldammer
  • Publication number: 20150036977
    Abstract: Methods, systems, and products illuminate display devices. An image is injected into a waveguide. The image propagates at total internal reflectance within the waveguide. A frustrator withdraws a frustrated image from the waveguide, and the frustrated image may be displayed to a viewer.
    Type: Application
    Filed: October 18, 2014
    Publication date: February 5, 2015
    Applicant: AT&T Intellectual Property I, L.P.
    Inventor: Kevin A. Li
  • Publication number: 20150027536
    Abstract: An optical system for light energy concentration may comprise a light concentrator to convert incident light to converging light, a light collimating element to receive the converging light and to reduce an angle of convergence of the converging light, and a light directing element to direct the reduced-angle converging light to a light guide to transmit the directed light.
    Type: Application
    Filed: September 29, 2014
    Publication date: January 29, 2015
    Inventors: Wei Zhou, Ming Lu, Xuyan Huang
  • Publication number: 20150030285
    Abstract: An optical receptacle includes a first optical surface which receives incidence of light, a reflecting surface which reflects light along a substrate, a light separating section which separates light from the reflecting surface into monitor light and signal light, a second optical surface which emits the monitor light toward a light receiving element, and a third optical surface which emits the signal light. The light separating section includes a plurality of separating units each including a vertical splitting transmissive surface, an inclining splitting reflecting surface and a parallel splitting stepped surface. In the light separating section, 4 to 6 separating units are disposed within a region where light reflected at the reflecting surface is incident. A height of a boundary between the splitting transmissive surface and the splitting stepped surface with respect to a virtual plane including the splitting reflecting surface is 13 to 21 ?m.
    Type: Application
    Filed: July 21, 2014
    Publication date: January 29, 2015
    Inventor: Masahiro TANAZAWA
  • Patent number: 8942522
    Abstract: Optical stack is disclosed. The optical stack includes a first optical stack that includes, a first optical adhesive layer, and a reflective polarizer layer that is disposed on the first optical adhesive layer. The reflective polarizer layer substantially reflects light of a first polarization state and substantially transmits light of a second polarization state orthogonal to the first polarization state. The optical stack also includes a second optical stack that includes a second optical adhesive layer, a low index layer that is disposed on the second optical adhesive layer and includes a plurality of voids dispersed in a binder, and a light directing film that is disposed on the low index layer and includes a plurality of unitary discrete structures. Portions of each unitary discrete structure penetrate into the first optical adhesive layer. Portions of each unitary discrete structure do not penetrate into the first optical adhesive layer.
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: January 27, 2015
    Assignee: 3M Innovative Properties Company
    Inventors: William F. Edmonds, Tao Liu, John F. Van Deriofske, III, John A. Wheatley
  • Patent number: 8941519
    Abstract: A light intensity subtractor according to one aspect of the present invention includes a light subtraction unit, a feedback circuit, a light input port, a first light output port, and a second light output port. The light subtraction unit receives input light through the light input port, outputs first output light to the first light output port, and outputs second output light to the second light output port. The light subtraction unit generates the first output light by reducing the light intensity of the second output light from the light intensity of the input light in accordance with a control voltage. The feedback circuit is connected to the light subtraction unit through the second light output port, and outputs the control voltage in accordance with the light intensity of the received second output light.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: January 27, 2015
    Assignee: NEC Corporation
    Inventor: Kenji Sato
  • Patent number: 8938142
    Abstract: A silicon-based opto-electronic circuit is formed to exhibit reduced polarization-dependent loss by strategically placing the photodetecting device as close as possible to the entry point of the optical signal into the opto-electronic circuit arrangement. While the incoming optical signal will include both TE and TM modes, by minimizing the length of the optical waveguide path along which the signal must propagate before reaching a photodetector, the attenuation associated with TM mode signal will be negligible.
    Type: Grant
    Filed: December 13, 2011
    Date of Patent: January 20, 2015
    Assignee: Cisco Technology, Inc.
    Inventors: Kalpendu Shastri, Raymond Nering
  • Publication number: 20150010272
    Abstract: An optical receptacle has a first optical surface which receives incidence of light from a light emitting element, a reflecting surface which reflects the light along a substrate, a light separating section which separates light reflected at the reflecting surface into monitor light and signal light, a second optical surface which emits the monitor light toward a light receiving element, and a third optical surface which emits the signal light toward an optical fiber. The light separating section has a plurality of splitting transmissive surfaces which are vertical surfaces with respect to the optical axis of the light reflected at the reflecting surface and a plurality of splitting reflecting surfaces which are inclining surfaces with respect to the optical axis of the light reflected at the reflecting surface. The splitting transmissive surfaces and the splitting reflecting surfaces are alternately disposed in a first direction and in a second direction.
    Type: Application
    Filed: July 7, 2014
    Publication date: January 8, 2015
    Inventor: Masahiro TANAZAWA
  • Patent number: 8926601
    Abstract: An improved system for safe and efficient generation of plasmas and vapors bubbles with continuous wave radiations and low levels of power densities, sufficient to treat medical pathologies and to avoid the creation damage to healthy tissue is provided. Transmission means in different configurations are used to achieve a high absorption in water, which is able to initiate plasma with low levels of power density. Once plasma and vapor bubbles are formed, they absorb other wavelengths in addition to the one that initiated it. Other wavelengths, more efficiently generated by diodes or diode pumped lasers, are added into the beam to improve treatment efficiency. This modulated plasma produces fast tissue ablation and good hemostasis effect with minimal overheating of remaining tissue. After plasma and high-energy vapors are generated, only laser radiation that passes through the plasma bubble directly interacts with soft tissues.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: January 6, 2015
    Assignee: Biolitec Pharma Marketing Ltd
    Inventors: Wolfgang Neuberger, Walter Cecchetti, Leonardo Cecchetti, Filiberto Zattoni
  • Patent number: 8929697
    Abstract: A light injection system includes a radiation source, an optical waveguide, and an optical component. The radiation source emits radiation and is oriented relative to the optical waveguide such that a first portion of radiation emitted from the radiation source couples into the optical waveguide as emitted from the radiation source and a second portion of radiation emitted from the radiation source bypasses the optical waveguide as emitted from the radiation source. The optical component redirects at least some of the second portion of radiation emitted from the radiation source that would otherwise bypass the optical waveguide and enables at least some of the redirected radiation to couple into the optical waveguide instead of bypass the optical waveguide.
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: January 6, 2015
    Assignee: Perceptive Pixel Inc.
    Inventor: Arlie Richard Conner
  • Patent number: 8929693
    Abstract: A semiconductor package and a semiconductor device including the same. The semiconductor package includes: a package substrate; a plurality of connection elements that are disposed on the package substrate; and a semiconductor chip that includes at least one optical input/output element that transmits/receives an optical signal to/from the outside at an optical input/output angle with respect to a direction perpendicular to a bottom surface of the package substrate, and is electrically connected to the package substrate through the plurality of connection.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: January 6, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong-jae Shin, Hyun-il Byun, Kwang-hyun Lee, Kwan-sik Cho, Ho-chul Ji, Jung-hyung Pyo, Kyoung-ho Ha
  • Patent number: 8929694
    Abstract: In one example, a composite processor includes a circuit board, a first processor element package, and a second processor element package. The circuit board has an optical link and an electrical link. The first processor element package includes a substrate with an integrated circuit, a sub-wavelength grating optical coupler, and an electrical coupler coupled to the electrical link of the circuit board. The second processor element package includes a substrate with an integrated circuit, a sub-wavelength grating optical coupler, and an electrical coupler coupled to the electrical link of the circuit board. The sub-wavelength grating optical coupler of the first processor element package, the optical link of the circuit board, and the sub-wavelength grating optical coupler of the second processor element package collectively define an optical communications path between the substrate of the first processor element package and the substrate of the second processor element package.
    Type: Grant
    Filed: January 20, 2011
    Date of Patent: January 6, 2015
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Raymond G Beausoleil, Marco Fiorentino, Moray McLaren, Greg Astfalk, Nathan Lorenzo Binkert, David A. Fattal
  • Patent number: 8929698
    Abstract: A plasmonic transducer includes at least two metal elements with a gap therebetween. The metal elements are placed along a plasmon-enhanced, near-field radiation delivery axis. Cross sections of the metal elements in a plane normal to the delivery axis vary in shape along the delivery axis. The metal elements have a reduced cross section portion at a media-facing surface oriented normal to the delivery axis. A dielectric material surrounds the reduced cross section portion of the plasmonic transducer at the media-facing surface, and reduces deformation of the metal elements proximate the media-facing surface at elevated temperatures.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: January 6, 2015
    Assignee: Seagate Technology LLC
    Inventors: Chubing Peng, Kaizhong Gao, Yongjun Zhao
  • Patent number: 8923673
    Abstract: An optical modulator is provided which can compensate for a bias shift between an output light and a monitoring light of the optical modulator and which has a configuration capable of being reduced in size with a simple structure. The optical modulator comprises a substrate that has an electro-optical effect, an optical waveguide that includes a Mach-Zehnder type optical waveguide formed in the substrate, a modulation electrode that modulates light waves propagating in the optical waveguide, an optical fiber that guides an output light from the optical waveguide, light collecting means for collecting two radiated lights from the Mach-Zehnder type optical waveguide toward a single optical receiving element, and light intensity ratio adjusting means for adjusting a light intensity ratio of the two radiated lights received by the optical receiving element.
    Type: Grant
    Filed: February 22, 2012
    Date of Patent: December 30, 2014
    Assignee: Sumitomo Osaka Cement Co., Ltd.
    Inventors: Kei Katou, Shinsuke Kanno, Ryo Shimizu, Norikazu Miyazaki, Hideki Ichimei
  • Patent number: 8923669
    Abstract: An optical wave guide includes an optical waveguide layer in which a core layer is surrounded by a cladding layer, a light path converting portion provided to a light entering side and a light emitting side of the optical waveguide layer respectively, a light entering portion demarcated in an outer surface of the cladding layer, in which a light is entered to the light path converting portion of the light entering side; and a light emitting portion demarcated in an outer surface of the cladding layer, in which a light from the light path converting portion of the light emitting side is emitted, wherein an outer surface of the cladding layer except the light entering portion and the light emitting portion is formed as a roughened surface.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: December 30, 2014
    Assignee: Shinko Electric Industries Co., Ltd.
    Inventors: Hideki Yonekura, Kenji Yanagisawa, Kazunao Yamamoto, Mieko Yamamoto
  • Patent number: 8923668
    Abstract: According to the present invention, as a result of using a depressed or trench-assisted light-receiving waveguide in which the core is surrounded by a layer having a refractive index lower than that of a cladding as light-receiving means for receiving light outputted from a multi-core optical fiber, the layer of a low refractive index can inhibit the propagation of noise, etc. from the cladding to the core. Consequently, even in cases where the inter-core crosstalk is small, it is possible to accurately measure the inter-core crosstalk since components different from crosstalk-derived components in optical power are reduced.
    Type: Grant
    Filed: February 22, 2012
    Date of Patent: December 30, 2014
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Tetsuya Hayashi, Osamu Shimakawa
  • Patent number: 8917962
    Abstract: In embodiments of this invention, light emitting devices comprise film-based lightguides comprising at least one light input coupler and an array of coupling lightguides that are folded or bent and disposed substantially above one another. The edges of the coupling lightguides may form part of a light input surface. The light emitting device may comprise more than one light input coupler and the film may be less than 500 microns in thickness. In embodiments of this invention, methods of manufacturing lightguides and light input couplers comprise steps that translate linear fold regions of the coupling lightguides relative to each other such that the coupling lightguides are bent or folded above each other. In other embodiments of this invention, an electroluminescent sign, light fixture, frontlight for a reflective display, or a backlight for a transmissive display comprises a lightguide and light input coupler comprising coupling lightguides.
    Type: Grant
    Filed: June 24, 2010
    Date of Patent: December 23, 2014
    Assignee: Flex Lighting II, LLC
    Inventors: Anthony John Nichol, Zane Coleman
  • Patent number: 8917961
    Abstract: An apparatus consisting of stacked slab waveguides whose outputs are vertically staggered is disclosed. At the input to the stacked waveguides, the entrances to each slab lie in approximately the same vertical plane. A spot which is imaged onto the input will be transformed approximately to a set of staggered rectangles at the output, without substantial loss in brightness, which staggered rectangles can serve as a convenient input to a spectroscopic apparatus. A slit mask can be added to spatially filter the outputs so as to present the desired transverse width in the plane of the spectroscopic apparatus parallel to its dispersion.
    Type: Grant
    Filed: May 13, 2013
    Date of Patent: December 23, 2014
    Assignee: Redox Biomedical, Inc.
    Inventors: Sascha Hallstein, Donald A. Ice
  • Publication number: 20140360578
    Abstract: A solar energy system for collecting light includes at least one stretchable lightguide film configured to optically couple light into a lightguide condition in the at least one stretchable lightguide film. Also disclosed is a method for collecting light with a lightguide film that includes stretching or contracting the lightguide film having one or more coupling features to optically couple light into the lightguide film.
    Type: Application
    Filed: May 10, 2012
    Publication date: December 11, 2014
    Inventors: Anthony J. Nichol, Zane A. Coleman
  • Patent number: 8909018
    Abstract: A lens element includes a main body. The main body includes a number of first lens portions, a number of second lens portions corresponding to the first lens portions, and a deflecting portion upwardly protruding from a surface of the main body. The deflecting portion includes a deflecting surface positioned outside the main body. The deflecting surface deflects optical signals between the first lens portions and the second lens portions.
    Type: Grant
    Filed: April 21, 2013
    Date of Patent: December 9, 2014
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Chang-Wei Kuo
  • Patent number: 8909008
    Abstract: Optical signals are transmitted across a rotary junction using an active optical rotary coupler. A rotary optical joint assembly includes a rotatable optical coupler and an optical signal processing system. The rotatable optical coupler aligns two optical fibers for optical communication across a rotary optical junction. The optical signal processing system includes a local optical transceiver that receives the signals and compensates for at least a portion of signal loss or other signal imperfections incurred from transmitting the signal across the rotary optical junction. The local optical transceiver also processes the signals for longer distance transmission.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: December 9, 2014
    Assignee: Owlink Technology, Inc.
    Inventors: Shing-Wu P. Tzeng, Ding-Wei Cheng, Chien-Jen Lin, Chih-Hao Liu
  • Patent number: 8909009
    Abstract: Lightguides, devices incorporating lightguides, processes for making lightguides, and tools used to make lightguides are described. A lightguide includes light extractors arranged in a plurality of regions on a surface of the lightguide. The orientation of light extractors in each region is arranged to enhance uniformity and brightness across a surface of the lightguide and to provide enhanced defect hiding. The efficiency of the light extractors is controlled by the angle of a given light extractor face with respect to a light source illuminating the light guide.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: December 9, 2014
    Assignee: 3M Innovative Properties Company
    Inventors: Tzu-Chen Lee, David A. Ender, Guoping Mao, Jun-Ying Zhang, Jaime B. Willoughby
  • Patent number: 8909059
    Abstract: An optical communication module includes a substrate, an optical signal receiving unit, an optical signal emitting unit and a coupler. The substrate includes a first surface and a second surface. The substrate defines through holes passing through the first and second surfaces. The optical signal receiving unit includes optical-electrical signal converters. The optical signal emitting unit includes optical signal generators. Each of the optical-electrical signal converters and the optical signal generators is mounted on the first surface and aligned with a corresponding one of the through holes. The coupler includes coupling lenses. The coupler is fixed to the second surface. Each of the optical-electrical signal converters and the optical signal generators is aligned with a corresponding coupling lens through the corresponding through hole.
    Type: Grant
    Filed: August 9, 2012
    Date of Patent: December 9, 2014
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Kai-Wen Wu
  • Patent number: 8903207
    Abstract: A Head Up Display can be utilized to find light from an energy source. The Head Up Display includes a first waveguide having a first input coupler and a first output coupler. The Head Up Display can also include a second waveguide having a second input coupler and a second output coupler. The first waveguide has a first major surface and the second waveguide has a second major surface, which are disposed approximately parallel to each other. The first waveguide and the second waveguide are positioned as a combiner and allowing viewing an outside feed and information from an image source. The first input coupler diffracts light in the first field of view into the first waveguide and light in a second field of view reaches the second input coupler and is diffracted into the second waveguide.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: December 2, 2014
    Assignee: Rockwell Collins, Inc.
    Inventors: Robert D. Brown, Kurt A. Stahl, Robert B. Wood
  • Patent number: 8897612
    Abstract: Light-coupling systems and methods that employ light-diffusing optical fiber are disclosed. The systems include a light source and a light-diffusing optical fiber optically coupled thereto. The light-diffusing optical fiber has a core, a cladding and a length. At least a portion of the core comprises randomly arranged voids configured to provide substantially spatially continuous light emission from the core and out of the cladding along at least a portion of the length. A portion of the light-diffusing optical is embedded in an index-matching layer disposed adjacent a lower surface of a transparent sheet. Light emitted by the light-diffusing optical fiber is trapped within the transparent sheet and index-matching layer by total internal reflection and is scattered out of the upper surface of the transparent sheet by at least one scattering feature thereon.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: November 25, 2014
    Assignee: Corning Incorporated
    Inventor: Stephan Lvovich Logunov
  • Publication number: 20140341506
    Abstract: Plastic optical fiber data communication links. Particularly, plastic optical fiber data communication links for embedded applications. More particularly, unique packaging approaches to constructing a very small, low cost, but high performance optical link, which may operate at 1 gigabits per second (Gbps) or faster.
    Type: Application
    Filed: May 14, 2014
    Publication date: November 20, 2014
    Applicant: Vixar
    Inventors: Mary Brenner, Klein Johnson, William Hogan, Dave Shelander
  • Patent number: 8891919
    Abstract: An optical device includes first and second optical waveguides that each include a core and a cladding, and a connector that optically couples the first optical waveguide and the second optical waveguide with a lens interposed therebetween, wherein, in at least one of the first and the second optical waveguides, a difference in refractive index between the core and the cladding in a first direction differs from a difference in refractive index between the core and the cladding in a second direction that is different from the first direction, and wherein, in at least one of the first and the second optical waveguide, a first point of emergence of first rays that are output at angles in the first direction and a second point of emergence of second rays that are output at angles in the second direction are offset from each other along an optical axis.
    Type: Grant
    Filed: April 23, 2012
    Date of Patent: November 18, 2014
    Assignee: Fujitsu Limited
    Inventor: Takashi Shiraishi
  • Patent number: 8891918
    Abstract: Methods, systems, and products illuminate display devices. An image is injected into a tapered portion of a waveguide. The tapered portion reflects the image to create total internal reflectance of the image within the waveguide. A frustrator withdraws a frustrated image from the waveguide, and the frustrated image is displayed to a viewer.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: November 18, 2014
    Assignee: AT&T Intellectual Property I, L.P.
    Inventor: Kevin A. Li
  • Publication number: 20140334777
    Abstract: An optical guide comprises an injection zone intended to inject into the optical guide a light signal and an extraction zone intended to provide the light signal after transport by the optical guide. The optical guide comprises, in a superposed manner, at least two guidance elements. In a zone situated between the injection zone and the extraction zone, the guidance elements are partially separated from one another by a semi-reflective coating of length, in the direction or propagation of the light signal in the optical guide, dependent on a minimum angle of incidence of the light signal and on the thickness of at least one of the guidance elements that the semi-reflective coating separates.
    Type: Application
    Filed: December 6, 2012
    Publication date: November 13, 2014
    Inventors: Guilhem Dubroca, Pascal Benoit, Xavier Hugel, Khaled Sarayeddine
  • Patent number: 8882320
    Abstract: A connector adapted for use in an illumination system comprising at least one optical element, such as an optical fiber. is disclosed. The connector comprises a housing dimensioned so that internally it retains at least one end portion of at least one optical element, and externally substantially follows the shape of the end portion(s) of the optical element(s). This forms a join between the ends of the optical element(s). A light source is also contained within the housing and positioned so as to illuminate the end portions of at least one optical element. Electrical connection means adapted to connect the light source to an external power supply are provided. The electrical connection means being moveable relative to the housing. The electrical connection means may be carried by a flexible substrate, or may be formed by slideable contacts within a light guide rail.
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: November 11, 2014
    Assignee: 3M Innovative Properties Company
    Inventors: Joerg Roberto Purfuerst, Norbert Schumann, Thomas Keller, Werner Schwarz, David M. Rudek, Eric Schmuck
  • Patent number: 8885992
    Abstract: At the time of assembly of an optical transmission/reception module, a test variable wavelength light source 22 for outputting a test light signal is connected to a connector 8 of an optical fiber 7, and a large-diameter PD 23 measures a transmission loss in a light wavelength band limiting filter 12 while a rotational position determining unit 24 rotates a fiber ferrule 5, so that the rotational position determining unit 24 determines the rotational position ?loss-min of the fiber ferrule 5 which minimizes the transmission loss in the light wavelength band limiting filter 12, and aligns the fiber ferrule 5 at the rotational position ?loss-min.
    Type: Grant
    Filed: July 9, 2009
    Date of Patent: November 11, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tamon Omura, Nobuo Ohata, Masatoshi Katayama
  • Patent number: 8882368
    Abstract: It is expected to provide an optical communication module that can avoid the reduction in the performance of light communication when an edge emitting type photoelectric device is mounted. The optical communication module is configured to include: a basement where a convex first and second lenses are integrally formed on the upper and lower surfaces, respectively; and a laser diode aligned with the first lens on the upper surface to emit light in the direction toward the first lens. It is configured that the first lens refracts the light emitted from the laser diode to become substantially parallel to the upper surface of the basement and the refracted light is reflected toward the direction of second lens.
    Type: Grant
    Filed: April 23, 2010
    Date of Patent: November 11, 2014
    Assignees: Autonetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.
    Inventor: Shigeo Hayashi
  • Patent number: RE45390
    Abstract: A transceiver comprising a CMOS chip and a laser coupled to the chip may be operable to communicate an optical source signal from a semiconductor laser into the CMOS chip. The optical source signal may be used to generate first optical signals that are transmitted from the CMOS chip to optical fibers coupled to the CMOS chip. Second optical signals may be received from the optical fibers and converted to electrical signals via photodetectors in the CMOS chip. The optical source signal may be communicated from the semiconductor laser into the CMOS chip via optical fibers in to a top surface and the first optical signals may be communicated out of a top surface of the CMOS chip. The optical source signal may be communicated into the CMOS chip and the first optical signals may be communicated from the CMOS chip via optical couplers, which may comprise grating couplers.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: February 24, 2015
    Assignee: Luxtera, Inc.
    Inventors: Peter De Dobbelaere, Thierry Pinguet, Mark Peterson, Mark Harrison, Alexander G. Dickinson, Lawrence C. Gunn, III