Patents Examined by Akm Ullah
  • Patent number: 8345184
    Abstract: A light guide plate (63) includes a light introducing section (65), which is at a position facing a point light source (62), for confining light from the point light source, and a light guide plate main body (64), which has a thickness smaller than a thickness at an end of the light introducing section on the point light source side, for outputting the confined light to an outside from a light outputting surface by light outputting means (70). The light introducing section (65) has an inclined surface (67), which is inclined from a surface of the light introducing section towards a surface of the light guide plate main body (64). The inclined surface (67) has a directivity converting pattern (68) for converting a directivity expansion in a thickness direction of the light guide plate of the light entered to the light introducing section (65) to directivity characteristics tilted towards a direction parallel to a surface direction of the light guide plate.
    Type: Grant
    Filed: June 10, 2008
    Date of Patent: January 1, 2013
    Assignee: OMRON Corporation
    Inventors: Masayuki Shinohara, Yasuhiro Tanoue, Kazuhide Hirota, Koichi Takemura, Takuma Iwase, Takako Ishikawa, Yoshihiro Ueno, Morihisa Ota, Jun Kishimoto, Gouo Kurata, Yukihiro Takahashi, Hiroyuki Miyamoto
  • Patent number: 8339533
    Abstract: A vertical alignment liquid crystal display includes a first substrate and a second substrate disposed opposite the first substrate. The first substrate includes a first insulation substrate, as well as a first pixel electrode and a second pixel electrode disposed in a same layer with the first pixel electrode on the first insulation substrate. The second substrate includes a second insulation substrate, a first patterned conductive layer disposed on only a portion of the second insulation substrate which is above the first pixel electrode, and a second patterned conductive layer disposed on only a portion of the second insulation substrate which is above the second pixel electrode.
    Type: Grant
    Filed: March 25, 2010
    Date of Patent: December 25, 2012
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae-Yong Shin, Woo-Sung Sohn, Doo-Hwan You, Young-Hoon Yoo
  • Patent number: 8330929
    Abstract: A display panel includes a first substrate in which a terminal area is defined along at least one edge thereof, and connection terminals are formed in the terminal area; and a second substrate which is bonded to the first substrate with sealing material being interposed between the first and second substrates, so as to expose the connection terminals. At an edge of the second substrate corresponding to the edge of the first substrate, at which the terminal area is defined, the second substrate includes protrusions protruding to the edge of the first substrate.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: December 11, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Tazo Ikeguchi
  • Patent number: 8326095
    Abstract: A tilt meter includes a housing structure defining an inner chamber sealed from an environment outside the housing structure. First and second optical fiber sections are provided in the inner chamber. The second optical fiber section is optically coupled to the first optical fiber section, with the second optical fiber section rotated azimuthally with respect to the first optical fiber section. The first and second optical fiber sections are arranged to receive light transmitted from a remote light source, and a tilt of the housing structure induces a differential pressure within the inner chamber to be detected by the first and second optical fiber sections.
    Type: Grant
    Filed: February 8, 2010
    Date of Patent: December 4, 2012
    Assignee: Schlumberger Technology Corporation
    Inventors: Arthur H. Hartog, Robert Greenaway
  • Patent number: 8315493
    Abstract: The specification describes an improved optical fiber produced by a hybrid VAD/MCVD process. The core of the fiber is produced using VAD and the inner cladding layer has a depressed index and is produced using MCVD. In preferred embodiments, the optical power envelope is essentially entirely contained in VAD produced core material and the MCVD produced depressed index cladding material. Optical loss is minimized by confining most of the optical power to the VAD core where OH presence is low, as well as by maximizing the optical power in the un-doped silica region. The MCVD substrate tube material is essentially devoid of optical power.
    Type: Grant
    Filed: October 19, 2011
    Date of Patent: November 20, 2012
    Assignee: OFS Fitel LLC
    Inventors: Lance Gibson, David Peckham, Robert Lingle, Jr.
  • Patent number: 8311381
    Abstract: A support for an optical fiber partially submerged in a substrate is discloses in which the support is arranged with fiber fixing means for fixing a portion of the fiber to the support so that strain on the portion of the fiber external to the substrate and support member is at least partially diverted from the portion of the fiber internal to the support member.
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: November 13, 2012
    Assignee: Airbus Operations Limited
    Inventor: Christophe Paget
  • Patent number: 8295668
    Abstract: The specification describes an improved optical fiber produced by a hybrid VAD/MCVD process. The core of the fiber is produced using VAD and the inner cladding layer has a depressed index and is produced using MCVD. In preferred embodiments, the optical power envelope is essentially entirely contained in VAD produced core material and the MCVD produced depressed index cladding material. Optical loss is minimized by confining most of the optical power to the VAD core where OH presence is low, as well as by maximizing the optical power in the un-doped silica region. The MCVD substrate tube material is essentially devoid of optical power.
    Type: Grant
    Filed: October 7, 2011
    Date of Patent: October 23, 2012
    Assignee: OFS Fitel LLC
    Inventors: Lance Gibson, David Peckham, Robert Lingle, Jr.
  • Patent number: 8270795
    Abstract: A hollow fiber has a hollow tube, a reflecting film formed on an inner wall of the hollow tube, and the reflecting film is a first metal film formed by baking a first metal nano particle solution including a first metal nano particle. The hollow fiber may have a transparent film on the first metal film. The transparent film is formed by baking or chemically reacting from a second metal nano particle included in a second metal nano particle solution.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: September 18, 2012
    Assignee: Hitachi Cable, Ltd.
    Inventors: Akihito Hongo, Yoshinori Kurosawa, Masahiro Ohkawa, Hiroaki Takamiya
  • Patent number: 8265438
    Abstract: An optical cable comprises a plurality of elongate members wherein at least one of the elongate members include at least one optical fiber surrounded by buffer tube. The buffer tube is made of a soft material having a tension at break of less than 7.5 MPa. The elongate members are disposed around a central element. A binder is wrapped around the plurality of elongate members. An outer jacket surrounds the plurality of elongate members.
    Type: Grant
    Filed: September 10, 2009
    Date of Patent: September 11, 2012
    Assignee: CCS Technology, Inc.
    Inventors: Horst Knoch, Gerhard Merbach, Waldemar Stöcklein, Günter Wünsch
  • Patent number: 8259261
    Abstract: A liquid crystal display device is provided. The liquid crystal display device according to an exemplary embodiment includes a backlight unit; a liquid crystal display panel located on the backlight unit; a polarization plate located on the liquid crystal display panel; and a tempered glass plate located on the polarization plate, the tempered glass plate including an anti-reflection layer having at least one of a non-conductive oxide film and a conductive oxide film, wherein a conductive tape is connected to a portion of the anti-reflection layer.
    Type: Grant
    Filed: April 7, 2009
    Date of Patent: September 4, 2012
    Assignee: LG Display Co., Ltd.
    Inventor: Sejune Kim
  • Patent number: 8260094
    Abstract: Consistent with the present disclosure, various optical components are preferably arranged on the surface of a semiconductor substrate such that light propagates in certain components at a direction that is perpendicular to a direction of propagation in other components in order to improve performance and component density.
    Type: Grant
    Filed: December 24, 2008
    Date of Patent: September 4, 2012
    Assignee: Infinera Corporation
    Inventors: Peter W. Evans, Scott Corzine
  • Patent number: 8244091
    Abstract: A fiber fuse terminator which is used to terminate a fiber fuse, comprising: an optical fiber which includes a core and a cladding having holes extending in a longitudinal direction thereof, in which: a refractive index of the core of the optical fiber is higher than a refractive index of a portion of the cladding excepting portions of the holes; when it is assumed that a mode field diameter at a used wavelength of the optical fiber is MFD, and a distance in a cross section perpendicular to the longitudinal direction of the optical fiber between a center of the core and a position, closest to the center of the core, of the hole that is closest to the core is Rmin, a value expressed by 2×Rmin/MFD is no less than 1.2 and no more than 2.1; when it is assumed that a width, in a diameter direction, of a region where the holes present in the cladding is W, a value expressed by W/MFD is no less than 0.3; and when it is assumed that a diameter of the cladding of the optical fiber is Dfiber, W?0.
    Type: Grant
    Filed: March 22, 2010
    Date of Patent: August 14, 2012
    Assignee: Fujikura Ltd.
    Inventor: Katsuhiro Takenaga
  • Patent number: 8237882
    Abstract: A liquid crystal display device includes a cover bottom, a reflection sheet over the cover bottom, lamps over the reflection sheet, a diffuser plate over the lamps, a plurality of optical sheets over the diffuser plate, a guide panel of a rectangular shape surrounding edges of the diffuser plate and the plurality of optical sheets, the guide panel including fixing ribs at an inner surface thereof, a liquid crystal panel over the plurality of optical sheets and including first and second substrates and a liquid crystal layer therebetween, a top cover covering edge portions of a front surface of the liquid crystal panel and combined with the guide panel and the cover bottom, wherein the fixing ribs contact edges of the diffuser plate such that a force is applied to the diffuser plate.
    Type: Grant
    Filed: November 16, 2009
    Date of Patent: August 7, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Jung-Hong Park, Jun-Sik Kim
  • Patent number: 8238702
    Abstract: The present invention provides a hybrid dielectric/SPP waveguide that can form either a single mode, single polarization waveguide, or a multi-mode waveguide. When multi-mode, this invention effectively transfers energy back and forth between the dielectric waveguide and metal surface. This improves on standard SPP modes, yielding longer range propagation along with high intensity near the metal surface at decisive locations. When single-mode, this hybrid waveguide allows for control of propagation and confinement for applications such as telecommunications optics integrated on silicon microchips. Gratings may be patterned in the metal for coupling light into and out of the modes or for use as mirrors in the mode. For areas where very long ranges are required, a metal grating may be used to couple light into the mode, but then the metal may be removed in other regions and make the range of the mode virtually infinite (limited by surface roughness).
    Type: Grant
    Filed: June 5, 2009
    Date of Patent: August 7, 2012
    Assignee: Colorado School of Mines
    Inventor: P. David Flammer
  • Patent number: 8233101
    Abstract: A laminated wave plate includes a first wave plate with a phase difference of ?1=180° with respect to a designed wavelength ?0 and a second wave plate with a phase difference of ?2=180°, in which the first wave plate and the second wave plate are arranged and laminated so that optical axes thereof intersect each other, the laminated wave plate converting an incident linearly-polarized beam into a linearly-polarized beam obtained by rotating a polarization plane of the incident linearly-polarized beam by a predetermined angle ? and outputting the converted linearly-polarized beam. When in-plane bearing angles formed by the polarization plane of the incident linearly-polarized beam and optical axes of the first and second wave plates are represented by ?1 and ?2 and an optical axis adjustment amount is represented by a, the following expressions are satisfied: ?1=?/4+a; and ?2=3?/4?a.
    Type: Grant
    Filed: March 19, 2010
    Date of Patent: July 31, 2012
    Assignee: Seiko Epson Corporation
    Inventor: Masayuki Oto
  • Patent number: 8224136
    Abstract: An optical multiplexer/demultiplexer module comprises: a plurality of prisms, each having an inclined surface that is formed by one of the four orthogonal corners of a transparent rectangular solid glass plate being cut and removed at a 45° angle with respect to the end surface; a frame for housing said plurality of prisms; and a plurality of collimator units that convert light having a different wavelength for each prism to collimated light, and inputs the light to the respective prism. When light a having different wavelength is input to a respective prism, the input light is reflected two times, by the inclined surface and a second end surface, after which the light is output from the respective prism.
    Type: Grant
    Filed: April 1, 2010
    Date of Patent: July 17, 2012
    Assignee: Furukawa Electric Co., Ltd.
    Inventor: Hiroshi Matsuura
  • Patent number: 8218921
    Abstract: A single helix chiral fiber grating of a predetermined grating strength is provided that is operable to control light transmission in a predetermined wavelength range. The novel fiber grating comprises a first optical fiber with a first interface portion at a first end, a second interface portion at a second end, and a middle portion therebetween. The first optical fiber is configured with at least one fiber core, surrounded by a corresponding at least one cladding, with a first longitudinal section disposed within the first interface portion, a second longitudinal section disposed within the second interface portion, and also includes a longitudinal helical section, disposed therebetween within the middle portion, that comprises a longitudinal helix structure of a single predetermined handedness, having a predetermined pitch profile, and having a predetermined helix diameter profile selected and configured to produce the predetermined grating strength.
    Type: Grant
    Filed: July 14, 2009
    Date of Patent: July 10, 2012
    Assignee: Chiral Photonics, Inc.
    Inventors: Victor Il'ich Kopp, Jonathan Singer, Christopher Draper, Victor M. Churikov, Daniel Neugroschl
  • Patent number: 8218914
    Abstract: The present invention provides an electro-optic device comprising three or more radio-frequency (RF) signal electrodes, which each include an input segment. The input segments of the three or more RF-signal electrodes are arranged in a fractal pattern followed in an RF-signal transit direction by a parallel-bend pattern. Advantageously, this arrangement allows matching of RF-signal transit times of the input segments and near matching of RF-signal losses of the input segments.
    Type: Grant
    Filed: November 3, 2009
    Date of Patent: July 10, 2012
    Inventor: Karl Kissa
  • Patent number: 8218922
    Abstract: There is disclosed an optical device for dispersion compensation of channels within a predetermined wavelength band, comprising: a waveguiding structure; and a grating structure formed in said waveguiding structure; characterized in that said grating structure has a Bragg frequency profile that is divided into contiguous periods, wherein the Bragg frequencies within each period vary between a lower Bragg frequency and an upper Bragg frequency, said lower and upper Bragg frequencies for each period both corresponding to wavelengths outside of said predetermined wavelength band.
    Type: Grant
    Filed: February 15, 2008
    Date of Patent: July 10, 2012
    Assignee: Proximion Fiber Systems AB
    Inventors: Bengt Sahlgren, Sten Helmfrid
  • Patent number: 8218924
    Abstract: A fiber optic cable is described that includes a core, a cladding over the core, and a plurality of optical events on at least one of the core and cladding. The plurality of optical events are constructed and arranged to alter a signal transmitted through the cable, where the plurality of optical events define a signature key of the cable. The signature key can be used in various electronic devices and systems, such that a mode of operation is disabled or enabled based on whether the correct fiber optic cable is installed.
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: July 10, 2012
    Assignee: Lockheed Martin Corporation
    Inventors: Howard J. Schantz, Brian L. Uhlhorn