Diffuser Or Diffusing Of Incident Light (e.g., Optical Coupler) Patents (Class 362/558)
  • Patent number: 10488708
    Abstract: A backlight module including a light output module, a first prism sheet, and a second prism sheet is provided. The light output module has a light output surface. The first prism sheet is disposed on the light output surface of the light output module. The first prism sheet has a plurality of first prism structures extending in a first extending direction. The second prism sheet is disposed on the first prism sheet. The second prism sheet has a plurality of second prism structures extending in a second extending direction. The angle between the first extending direction and the second extending direction is less than or equal to 30 degrees.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: November 26, 2019
    Assignee: Au Optronics Corporation
    Inventors: Ming-Lung Chen, Ming-Chun Hsu, Li-Jia Chen, Cheng-Chuan Chen, Chih-Kang Wu
  • Patent number: 10390690
    Abstract: A dental light comprises at least one light emitting diode light source configured to produce a light beam and at least one collimating lens system situated to receive the light beam. The collimating lens system is configured to collect and collimate the light beam. The collimating lens system can additionally modify the beam through controlled diffusion or shape the beam using an aperture.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: August 27, 2019
    Assignee: A-dec, Inc.
    Inventors: Christopher C. Stone, Takaaki Nakagawa, Eric Bube, Randall Joel Lonsdale, Patrick W. Berry, Ryan M. Williams, Joseph Van Domelen, Jason Alvarez, Jonathan E. Myers
  • Patent number: 10338294
    Abstract: In an example embodiment, a cross runner of a suspended ceiling grid is provided, wherein the cross runner may comprise a light fixture configured to function as a cross runner, and the light fixture may comprise a light guide.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: July 2, 2019
    Assignee: Southpac Trust International Inc., Trustee of the LDH Trust
    Inventor: Leslie David Howe
  • Patent number: 10302855
    Abstract: A liquid crystal display device includes a plurality of light source packages each having a light-emitting portion for emitting light, a light guide plate which light emitted from the light source packages enters through the incidence surface, having a height and a width, and from which the light exits through the exit surface, and a liquid crystal display panel for controlling, for each pixel, the orientation of a liquid crystal material to control the transmission of the light exiting through the exit surface. Each light source package has two opposing long sides and two opposing short sides when viewed from the direction of the light emitted by the light-emitting portion. The plurality of light source packages are arranged long side to long side in the direction along the width.
    Type: Grant
    Filed: January 16, 2018
    Date of Patent: May 28, 2019
    Assignee: Japan Display Inc.
    Inventor: Norihiro Nakamura
  • Patent number: 10254467
    Abstract: The present invention provides a backlight structure, including: a light source module having a first slant surface, where a slot is provided on the first slant surface, and the slot is configured to accommodate a light emitting element; a light guiding module having a light guiding plate and a light shielding layer, where a second slant surface is provided at a side of the light guiding module; and a baseplate configured to bear the light guiding module and the light source module. The light source module is engaged with the second slant surface of the light guiding module by means of the first slant surface.
    Type: Grant
    Filed: August 14, 2017
    Date of Patent: April 9, 2019
    Assignee: PRIMAX ELECTRONICS LTD.
    Inventors: Tien-Yu Yeh, Che-Wei Yang
  • Patent number: 10222022
    Abstract: A fiber bundle includes a plurality of optical fibers, a light source, and a fiber cover. The light source is coupled to the plurality of optical fibers and operable to direct light into input ends of the plurality of optical fibers. The fiber cover has a predetermined cross-sectional shape configured to hold the plurality of optical fibers in a bundled position and to transmit light into an outer region of the plurality of optical fibers defining an illumination region for vehicle lighting functions.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: March 5, 2019
    Assignee: Valeo North America, Inc.
    Inventors: Brant Potter, Kayla Greene, Nate Montgomery
  • Patent number: 10222529
    Abstract: A lighting system may include one or more light sources and one or more light guides. A lighting system may be integrated into a window, a skylight, an exterior light such as a headlight, a tail light, or a high center-mounted stop light, or other exterior or interior portions of a system such as a vehicle. The light guide may be embedded in an adhesive layer in a vehicle structure. The light guide may be index-matched to the adhesive layer so that unilluminated portions of the light guide are indistinguishable from the vehicle structure. The light guide may be formed from optical fibers. The optical fibers may include a light-scattering optical fiber that scatters light out of the vehicle structure. The light-scattering optical fiber may be fused to a non-scattering optical fiber that guides light from a light source to the light-scattering optical fiber.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: March 5, 2019
    Assignee: Apple Inc.
    Inventors: Gregory A. Cohoon, Clarisse Mazuir, Matthew E. Last
  • Patent number: 10222518
    Abstract: A light diffusion sheet for overlaying is to be provided on a front face side of a prism sheet in a backlight unit of a liquid crystal display device, and has a substrate layer and a light diffusion layer overlaid on a front face side of the substrate layer, in which the light diffusion layer contains a resin matrix and resin beads dispersed in the resin matrix, wherein: a mode diameter in a volume-weighted particle size distribution of the resin beads is no less than 2.5 ?m and no greater than 5.5 ?m; a density of the resin beads per unit area is no less than 9,000 beads/mm2 and no greater than 24,000 beads/mm2; and an average thickness of the light diffusion layer is no less than 2 ?m and no greater than 9 ?m.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: March 5, 2019
    Assignee: Keiwa Inc.
    Inventor: Tadayuki Nonaka
  • Patent number: 10211381
    Abstract: A light-emitting device includes: a semiconductor laser element; a supporting member located above the semiconductor laser element, the supporting member having a through-hole that allows light emitted from the semiconductor laser element to pass therethrough; a fluorescent member located in the through-hole, the fluorescent member containing a fluorescent material that is excitable by light emitted from the semiconductor laser element so as to emit light having a wavelength different from a wavelength of the light emitted from the semiconductor laser element; and a light-transmissive heat dissipating member including: a base portion, and a projecting portion projecting from the base portion into the through-hole. An upper surface of the projecting portion of the heat dissipating member is bonded to a lower surface of the fluorescent member. An upper surface of the base portion of the heat dissipating member is bonded to a lower surface of the supporting member.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: February 19, 2019
    Assignee: NICHIA CORPORATION
    Inventor: Toshiaki Yamashita
  • Patent number: 10204248
    Abstract: The present invention relates to an active alignment method of a receiving device (2, 2?) including a sensor (4) and of a illumination device (6, 6?) including at least one light source (18, 8?) suitable for emitting a beam of light, including: —Assembling said receiving device (2, 2?); —Stably fixing said receiving device (2, 2?) on a chassis (30); —Actively aligning an optical group (11, 11?) of said illumination device (6, 6?) with respect to said light source (18, 18?); —Fixedly connecting said optical group (11, 11?) of said illumination device to said light source (18, 18?); —Actively aligning said illumination device (6, 6?) with respect to said receiving device (2, 2?); and —Stably fixing said illumination device (6, 6?) to said chassis (30).
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: February 12, 2019
    Assignee: DATALOGIC IP TECH S.R.L.
    Inventors: Anna Guagliumi, Federico Canini, Davide Bottazzi, Kurt Vonmetz
  • Patent number: 9897284
    Abstract: An LED-based lamp can be made to have a form factor compatible with fixtures designed for MR16 lamps. Such a lamp can have a housing that provides an external electrical connection. Inside the housing is disposed a single emitter structure having a substrate with multiple light-emitting diodes (LEDs) arranged thereon. Different LEDs produce light of different colors (or color temperatures). For example, at least one LED can produce a warm white light, while at least one other LED produces a cool white light and at least one other LED produces a red light. A total-internal-reflection (TIR) lens is positioned to collect light emitted from the single emitter structure and adapted to mix the light from the LEDs to produce a uniform white light. A diffusive coating is applied to a front face of the TIR lens for further color mixing.
    Type: Grant
    Filed: March 26, 2013
    Date of Patent: February 20, 2018
    Assignee: LedEngin, Inc.
    Inventors: Xiantao Yan, Wu Jiang, Zequn Mei
  • Patent number: 9726890
    Abstract: An image display device includes an image generating device, a light guide unit, and a light beam expanding device. The light guide unit includes a light guide plate, a first deflector, and a second deflector. The light beam expanding device expands a light beam incident from the image generating device along the Z direction and outputs the light beam to the light guide unit when the incident direction of light incident on the light guide plate is defined as the X direction and the propagation direction of light in the light guide plate is defined as the Y direction. The light beam expanding device is composed of a first reflective mirror on which light from the image generating device is incident and a second reflective mirror on which light from the first reflective mirror is incident and that outputs light to the light guide unit.
    Type: Grant
    Filed: July 13, 2015
    Date of Patent: August 8, 2017
    Assignee: Sony Corporation
    Inventors: Katsuyuki Akutsu, Nobuaki Kuribara, Teppei Imamura
  • Patent number: 9715056
    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 have a tubular shape and may have lengthwise extending features for light management.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: July 25, 2017
    Assignee: Cooper Technologies Company
    Inventors: Scott David Wegner, Jerold Alan Tickner
  • Patent number: 9709231
    Abstract: An electronic lighting device and a method for manufacturing the same are disclosed. The electronic lighting device may comprise a core, which may comprises an enclosure, a light-emitting element, a flame sheet and a swing mechanism. The flame sheet is movably supported or suspended on the enclosure, and may comprise an upper sheet which is of a flame-like shape. The upper sheet is configured to expose above the top of the enclosure. The light-emitting element may be installed on the enclosure. A light outgoing direction of the light-emitting element may be intersected with the surface of the upper sheet so that the light of the light-emitting element is projected on the surface of the upper sheet. The swing mechanism is disposed beneath the flame sheet and can apply a force on the flame sheet to actuate the flame sheet to sway or swing. By the present application, a visual experience of true fire can be achieved and an interestedness and appreciation can be improved.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: July 18, 2017
    Assignee: SHENZHEN LIOWN ELECTRONICS COMPANY LTD.
    Inventor: Xiaofeng Li
  • Patent number: 9568656
    Abstract: A fiber optical light guide for transmits a light emitted from a light source in a light transmitting direction. The fiber optical light guide has an inlet-side end, an outlet side end, a plurality of core members, and an outer clad member. The light from the light source enters into the inlet-side end, and is emitted from the outlet-side end. The core members extend in the light transmitting direction. The outer clad member is positioned around the core members and provides an outer wall of the core members. The outer clad member has light diffusionability.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: February 14, 2017
    Assignee: DENSO CORPORATION
    Inventor: Michinaga Nagura
  • Patent number: 9523809
    Abstract: A light emitting apparatus in which light of different colors can be irradiated depending on the locations of a light guide member used in the light emitting apparatus and in accordance with the environment of a facility or a user's demand, a light source member includes a plurality of light source members each with one or more light sources, and adjacent light source parts emitting light of different colors with each other. The light guide member includes a recess which is formed between the respective input surfaces through which the light from the corresponding light source parts is input and which has a recess side surface that reflects at least some of the light input through the input surfaces; a plurality of extension parts that respectively guide mainly the light input from the corresponding light source parts through the input surfaces; and a cutout portion formed between the extension parts.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: December 20, 2016
    Assignee: S.K.G. CO., LTD.
    Inventors: Mitsuhide Sakamoto, Toru Funabashi
  • Patent number: 9500834
    Abstract: An apparatus for compensating an image of a display, includes a light incident surface, a light emitting surface, and a plurality of light guiding channels. An area of the light emitting surface is greater than an area of the light incident surface. The plurality of light guiding channels is independent from each other, each light guiding channel extends from the light incident surface to the light emitting surface, and light from the light incident surface is extended to the light emitting surface by the light guiding channels. The present invention further discloses a method for manufacturing the same.
    Type: Grant
    Filed: January 25, 2014
    Date of Patent: November 22, 2016
    Assignee: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: I-Wei Wu
  • Patent number: 9500803
    Abstract: An apparatus for compensating an image of a display includes a light incident surface, a light emitting surface, and a plurality of light guiding channels independent from each other. The light incident surface is configured to be adjacent to the display to receive the image of the display into the apparatus. An area of the light emitting surface being greater than an area of the light incident surface. Each light guiding channel extends from the light incident surface to the light emitting surface. The light guiding channels is configured for transmitting the image from the light incident surface to the light transmitting surface and expanding the image such that the expanded image is displayed on the light emitting surface.
    Type: Grant
    Filed: January 25, 2014
    Date of Patent: November 22, 2016
    Assignee: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: I-Wei Wu
  • Patent number: 9470831
    Abstract: An illumination apparatus for illuminating an image bearing surface, comprising including an end-coupled illuminator comprising a light pipe having a first end face, a lateral surface and an illuminator longitudinal axis, a first light source (e.g., an LED) arranged to emit first light into the light pipe through the first end face, and a plurality of extractors disposed at selected locations along the illuminator longitudinal axis each adapted to deflect a corresponding portion of the first light from the light pipe though the lateral surface. The apparatus also includes a diffuser positioned to receive the portions of the first light and diffuse the portions of the first light in the direction of the illuminator longitudinal axis. The illumination apparatus may be included in a copier or a printer.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: October 18, 2016
    Assignee: Xerox Corporation
    Inventor: Robert Paul Herloski
  • Patent number: 9454012
    Abstract: A wearable display includes: a lighting element; an optical modulation element; a light guiding element configured to guide light from the lighting element to the optical modulation element; a holder configured to integrally hold the lighting element, the optical modulation element, and the light guiding element; and a virtual-image optical assembly that is connected to the holder and configured to generate a virtual image of image light from the optical modulation element.
    Type: Grant
    Filed: January 5, 2015
    Date of Patent: September 27, 2016
    Assignee: Sony Corporation
    Inventor: Toshio Enokido
  • Patent number: 9435955
    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: Grant
    Filed: December 6, 2012
    Date of Patent: September 6, 2016
    Assignee: OPTINVENT
    Inventors: Guilhem Dubroca, Pascal Benoit, Xavier Hugel, Khaled Sarayeddine
  • Patent number: 9393440
    Abstract: The invention relates to a radiation emitting device (1) for application near mammal tissue (2), comprising: a substrate (3) having a front surface (4) and an opposing back surface (5), said substrate accommodating at least one radiation source (6) on said front surface (4). Said at least one radiation source (6) is arranged for applying energy on said mammal tissue (2). A heat spreading section (7) is arranged on said back surface (5) of said substrate (3) in thermal contact with said at least one radiation source (6). Said heat spreading section (7) has an extended area (8) extending beyond said substrate (3) in a direction substantially parallel to said substrate (3). Said extended area (8) of said heat spreading section (7) is arranged in thermal contact with said mammal tissue (2).
    Type: Grant
    Filed: September 24, 2012
    Date of Patent: July 19, 2016
    Assignee: Koninklijke Philips N.V.
    Inventors: Bastiann Uitbeijerse, Georges Marie Calon
  • Patent number: 9363406
    Abstract: Provided is a light source unit that emits linear light to an original, the light source unit including: light sources that emit light; a light guide that is formed in a rod shape and that guides the light from the light sources to the original; a frame that houses the light sources and the light guide; and a circuit board including a conduction portion electrically connected to the light sources, wherein the circuit board is provided with a slit in a longitudinal direction of the light guide, the slit is disposed closer to the original than the light guide, and the light from the light guide is emitted to the original through the slit.
    Type: Grant
    Filed: January 5, 2015
    Date of Patent: June 7, 2016
    Assignee: CANON COMPONENTS, INC.
    Inventor: Shuuichi Shimoda
  • Patent number: 9353916
    Abstract: A luminaire comprising a lamp comprising an outer structure, a light source configured to emit a source light and carried by the outer structure, a middle structure connected to the outer structure, and a bi-pin base connected to the middle structure. The lamp may further comprise a light guide having an inner surface and an outer surface and a heat dissipating frame having a contact surface in thermal communication with the outer surface of the light guide and comprising a plurality of heat sink rods positioned to abut each other to define the contact surface of the heat dissipating frame. The light source may be configured to emit the source light so as to be incident upon the inner surface of the light guide. The light guide may be configured to change the source light into a shaped light that illuminates a space proximate to the luminaire.
    Type: Grant
    Filed: September 3, 2015
    Date of Patent: May 31, 2016
    Assignee: Lighting Science Group Corporation
    Inventors: Fredric S. Maxik, David E. Bartine
  • Patent number: 9291763
    Abstract: A variety of light-emitting devices are disclosed that are configured to output light provided by a light-emitting element (LEE). In general, embodiments of the light-emitting devices feature a light-emitting element, a scattering element that is spaced apart from the light-emitting element and an extractor element coupled to the scattering element, where the extractor element includes, at least in part, a total internal reflection surface. Luminaires incorporating light-emitting devices of this type are also disclosed.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: March 22, 2016
    Assignee: Quarkstar LLC
    Inventors: Hans Peter Stormberg, Robert C. Gardner, Gregory A. Magel, Ferdinand Schinagl, Roland H. Haitz
  • Patent number: 9274265
    Abstract: A surface light source apparatus capable of keeping a high in-plane brightness uniformity and a high light utilization efficiency without increasing the size of a frame, and also to provide a display apparatus including the surface light source apparatus. The surface light source apparatus includes a point light source, and a light guide plate having a hole formed near first side surface that is one side surface thereof, the hole being formed at a position where the point light source is to be arranged. The first side surface of the light guide plate has, in a portion thereof near the hole, a prism having a saw-toothed shape in a cross-section thereof parallel to a front surface of the light guide plate.
    Type: Grant
    Filed: November 5, 2010
    Date of Patent: March 1, 2016
    Assignee: Mitsubishi Electric Corporation
    Inventor: Seiji Sakai
  • Patent number: 9274270
    Abstract: The invention relates to a light-output device (1; 10; 30) controllable to provide different light-output functions. The light-output device comprises a light-source arrangement (12; 31) configured to emit light; and a light-guiding system (10; 32) arranged to receive the light and configured to guide the light to at least one light-output surface of the light-guiding system. The light-guiding system (10; 32) comprises at least a first light-guide (11b; 37) and a second light-guide (11a; 40, 41); and the light-guiding system (10; 32) is movable relative to the light-source arrangement (12; 31) between at least a first position where light output by the light-source arrangement is guided by the first light-guide (11b; 37) to provide a first light-output function, and a second position where light output by the light-source arrangement is guided by the second light-guide (11a; 40, 41) to provide a second light-output function, different from the first light-output function.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: March 1, 2016
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Michel Cornelis Josephus Marie Vissenberg, Ramon Pascal van Gorkom, Peter Johannes Martinus Bukkems, Mark Johannes Antonius Verhoeven, Andreas Aloysius Henricus Duijmelink, Monica Antonia Maria De Wilt, Richard Josephus Arnoldus Maria Foederer
  • Patent number: 9222649
    Abstract: A stage lighting fixture having: a casing having a closed first end and an open second end; a light source housed inside the casing, close to the first end, and which emits a light beam along an optical axis; an optical assembly positioned to intercept the light beam, and having a focal point located between the light source and the optical assembly; and a reflector coupled to the light source; the reflector and the light source being designed and coupled to concentrate the light beam substantially at a work point substantially coincident with the focal point of the optical assembly; and the light source being defined by a short-arc lamp to project a light bar.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: December 29, 2015
    Assignee: CLAY PAKY S.P.A.
    Inventors: Pasquale Quadri, Angelo Cavenati
  • Patent number: 9201184
    Abstract: A light guide plate includes a plate body and a light incident portion, wherein the plate body has a top plate surface. The light incident portion is formed on a side of the plate body and has a thickness increasing as the light incident portion extends away from a center of the plate body. In addition, the light incident portion has a top surface connected to the top plate surface and lifted from the top plate surface to include an angle with the top plate surface. The top surface includes a first incline and a second incline, wherein the first incline connects to a side of the top plate surface and has a first average slope. The second incline has a side connected to a side of the first incline opposite to the top plate surface and has a second average slope larger than the first average slope.
    Type: Grant
    Filed: December 24, 2013
    Date of Patent: December 1, 2015
    Assignee: AU OPTRONICS CORPORATION
    Inventors: Yi-Wen Chang, Fu-Cheng Fan
  • Patent number: 9063367
    Abstract: A direct-type backlight unit is provided for improving a dark area problem on the diffusion plate. The direct-type backlight unit includes an optical sheet; a diffusion plate for supporting the optical sheet; a bottom plate, disposed below the diffusion plate; a plurality of light emitting devices (LEDs), disposed between the diffusion plate and the bottom plate; a plurality of supporting elements, disposed between the diffusion plate and the bottom plate and fixed on the bottom plate, each supporting element including: a top portion having a light transmissive section through which light emitted by the LEDs pass; and a bottom portion, fixed on the bottom plate.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: June 23, 2015
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Che-Chang Hu, Kuang-Yao Chang, Zan-Jia Su
  • Publication number: 20150131306
    Abstract: Light diffusing optical fibers and light emitting apparatuses including light diffusing optical fibers are disclosed. In one embodiment, a light emitting apparatus includes a base, a transparent or translucent enclosure affixed to the base, a light diffusing optical fiber including a coiled filament enclosed within the enclosure, and a light source optically coupled to the light diffusing optical fiber. The coiled filament includes a glass core, an outer surface, and a plurality of light scattering structures situated within the coiled filament for scattering light through the outer surface of the coiled filament. The coiled filament has a loss in a range of 0.5 dB/turn to 10.0 dB/turn at a turn radius of less than 50 mm.
    Type: Application
    Filed: November 8, 2013
    Publication date: May 14, 2015
    Applicant: CORNING INCORPORATED
    Inventors: Michael Lucien Genier, Vineet Tyagi
  • Patent number: 9004708
    Abstract: An apparatus to widen the light dispersion pattern of a light source shining through an overlay window from the viewing side of an electrical computer system. The overlay window is coupled to a panel of the system. The overlay window includes a transparent material, which has a first surface facing the light source and a second surface facing away from the light source to define a viewing side. An opaque material can be disposed on the first surface to partially cover the first surface to form a viewing window. A first diffusing mechanism is disposed on the first surface, and a second diffusing mechanism is disposed on the second surface. In response to the passage of the light output through the viewing window, the light dispersion pattern of the light output from the viewing side of the overlay window has a viewing angle of up to about 180 degrees.
    Type: Grant
    Filed: October 14, 2013
    Date of Patent: April 14, 2015
    Assignee: Cisco Technology, Inc.
    Inventors: Perry L. Hayden, Sr., Ronald D. Lutz, Jr., Charles Ingalz, Bill Hin Yi Fong
  • Patent number: 8985827
    Abstract: A backlight module includes a light source, a reflector, an optical fiber group, and a light guide unit. The light source emits light rays. The reflector defines a number of through holes. The optical fiber group includes a number of optical fibers corresponding to the through holes. Each of the optical fibers includes a first end and a second end opposite to the first end. The first ends of the optical fibers receive the light rays from the light source. The second ends of the optical fibers are inserted into the corresponding through holes. The light guide unit is positioned close to the second ends, receives the light rays from the second ends, and makes the received light rays distribute uniformly. The reflector reflects a portion of the light rays reflected by the light guide unit to the light guide unit again.
    Type: Grant
    Filed: April 18, 2013
    Date of Patent: March 24, 2015
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Po-Chou Chen
  • Publication number: 20150078030
    Abstract: An optical coupler for a vehicle lighting system includes a housing having first and second openings, each opening having an optical axis passing through the opening into the housing, with the optical axes of the openings forming an obtuse angle. The optical coupler has one or more optics carried by the housing and arranged between the openings such that light entering the first opening along its optical axis passes through the one or more optics and exits through the second opening along the other optical axis. The optic(s) may include a first Fresnellian surface adjacent the first opening and a second Fresnellian surface adjacent the second opening such that light passing through the optical coupler from the first opening to the second opening passes through both Fresnellian surfaces and is redirected from the optical axis of the first opening to the optical axis of the second opening.
    Type: Application
    Filed: September 12, 2014
    Publication date: March 19, 2015
    Inventors: David Edward Ramey, Linsheng Chen
  • Publication number: 20150062954
    Abstract: A luminary fabric, useful for a variety of applications including signage, has at least one light-diffusing optical fiber woven, knitted, crocheted or otherwise integrated into the fabric. The light-diffusing optical fiber is coupled to at least one light source such as a laser or a light emitting diode. At least one coating is applied over at least a section of the outer surface of the optical fiber along its length. The coating contains at least one luminophore that absorbs energy from the light source and luminesces at a different higher wavelength. Multiple coatings containing one or more luminophores, one or more pigments, and/or one or more dyes may be employed to provide a variety of interesting visual effects.
    Type: Application
    Filed: August 27, 2013
    Publication date: March 5, 2015
    Applicant: CORNING INCORPORATED
    Inventors: Carl Edgar Crossland, Vineet Tyagi
  • Patent number: 8967820
    Abstract: A pointer structure including: a pointer main body formed by a light guide member and having a light guide portion closer to a light source and a light guide portion closer to a visualizing portion that are continued together through a pointer bend portion; an outer reflection surface formed at an outer corner of the pointer bend portion so that a ray of light from a light source can be incident thereon; and an inner reflection surface formed at an inner corner of the pointer bend portion and having a normal line thereof intersecting with a normal line of the outer reflection surface, the normal line of the inner reflection surface intersecting with the normal line of the outer reflection surface at an including angle ?, on a light input side, smaller than 180 degrees and greater than 90 degrees.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: March 3, 2015
    Assignee: Yazaki Corporation
    Inventor: Mikiya Amano
  • Patent number: 8967845
    Abstract: Light diffusing optical fiber bundles, illumination systems including light diffusing optical fiber bundles, and methods of affixing light diffusing optical fiber bundles to polymer optical fibers are disclosed. A light diffusing optical fiber bundle includes an optically transmissive jacket and a plurality of light diffusing optical fibers disposed within the optically transmissive jacket. Each of the plurality of light diffusing optical fibers includes a glass core including a plurality of nano-sized voids. The plurality of light diffusing optical fibers extend along a length of the optically transmissive jacket such that the plurality of diffusing optical fibers are not interwoven.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: March 3, 2015
    Assignee: Corning Incorporated
    Inventors: Kevin Wallace Bennett, Edward John Fewkes, Stephan Lvovich Logunov, Vineet Tyagi
  • Patent number: 8956032
    Abstract: An optical system having a light guide (3) and a reflector (6) is described. The light guide transports, during use, light from a first end (30) to a second end (31) of the light guide. The light guide has an entrance surface (2) at the first end for allowing incident light to enter the light guide at an entrance axis (8). The light guide further has a coupling element (5) at the second end for coupling light out of the light guide at a coupling axis (9) for illuminating the reflector. The light guide further has a solid rod-like guiding section (32) for guiding light entered in the light guide from the first end to the coupling element. The rod-like guiding section has one or more bends (33,34). Each light ray of the light guided to the coupling element is reflected in the bend (s) one or more times. The reflector receives light coupled out of the light guide and reflects the received light for providing a directed beam at a beam axis (9).
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: February 17, 2015
    Assignee: Invisua Holding B.V.
    Inventor: Matthijs Hendrik Keuper
  • Patent number: 8956015
    Abstract: A light-emitting apparatus includes a light-emitting diode that functions as a light source, and a teardrop-shaped translucent member formed of a translucent material. The teardrop-shaped translucent member includes a bottom portion via which the light emitted from the light-emitting diode is input, a lateral portion configured to provide total internal reflection of the light input via the bottom portion, and a top portion configured to focus the light subjected to total internal reflection by the lateral portion so as to form an image.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: February 17, 2015
    Assignee: Toki Corporation
    Inventor: Dai Homma
  • Publication number: 20150043241
    Abstract: A light guide has a transmission of greater than 90 percent, a refractive index greater than 1.4, and less than 10 haze percent. The light guide also includes an organosiloxane block copolymer having a weight average molecular weight of at least 20,000 g/mole. The organosiloxane block copolymer includes 40 to 90 mole percent disiloxy units of the formula [R12SiO2/2] arranged in linear blocks each having an average of from 10 to 400 disiloxy units [R12SiO2/2] per linear block, 10 to 60 mole percent trisiloxy units of the formula [R2SiO3/2] arranged in non-linear blocks each having a weight average molecular weight of at least 500 g/mol, and 0.5 to 25 mole percent silanol groups [?SiOH]. R1 is independently a C1 to C30 hydrocarbyl and R2 is independently a C1 to C20 hydrocarbyl. Moreover, at least 30% of the non-linear blocks are crosslinked with another non-linear block and aggregated in nano-domains.
    Type: Application
    Filed: March 14, 2013
    Publication date: February 12, 2015
    Inventors: David J. Deshazer, Steven Swier
  • 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
  • Publication number: 20150015827
    Abstract: An LCD having a backlight module is proposed. The backlight module includes an ambient light collector for collecting ambient light; a back plate; a diffuser plate on the back plate; a plurality of optical fibers straightly fixed between the diffuser plate and the back plate and coupled to the ambient light collector. Microstructure is formed on the surface of the optical fibers straightly fixed between the diffuser plate and the back plate, and the microstructure makes light from the optical fibers evenly being emitted. The backlight module utilizes microstructure formed on a surface of optical fibers for evenly distributing light from the surface of the optical fibers. In hence, it effectively guides ambient light into the backlight module via the optical fibers and ensures at the same time that the light is evenly distributed to the backlight module.
    Type: Application
    Filed: July 15, 2013
    Publication date: January 15, 2015
    Applicant: Shenzhen China Star Optoelectronics Technology Co. Ltd.
    Inventors: Yong Fan, Yongyuan Qiu, Chao Ning
  • Publication number: 20150013660
    Abstract: The present invention relates to an illumination device (20) for a cooking zone element (10) provided for a cooking hob covered by a transparent panel. The illumination device (20) is provided for a cooking zone element (10) with a central cutout (40) in a central portion of said cooking zone element (10). The illumination device (20) includes at least one diffuser screen (14) arranged or arrangeable in an upper portion of the central cutout (40) of the cooking zone element (10) and parallel to the transparent panel of the cooking hob. The illumination device (20) includes at least one light source element (30) arranged or arrangeable below the central cutout (40) of the cooking zone element (10). The illumination device (20) includes an optical lens (28) enclosing an upper portion of the light source element (30). Further, the present invention relates to a corresponding cooking zone element and cooking hob.
    Type: Application
    Filed: March 12, 2013
    Publication date: January 15, 2015
    Inventors: Jochen Holzinger, Claus Meider, Harald Hoffmann
  • Publication number: 20150009706
    Abstract: An optical structure can include a nanocrystal on a surface of an optical waveguide in a manner to couple the nanocrystal to the optical field of light propagating through the optical waveguide to generate an emission from the nanocrystal. The structure can be configured to restrict propagation of the emission from the nanocrystal along the waveguide.
    Type: Application
    Filed: September 22, 2014
    Publication date: January 8, 2015
    Inventors: Vladimir BULOVIC, David H. FRIEND, Moungi BAWENDI
  • Publication number: 20150009705
    Abstract: According to an embodiment, a light emitting device includes: a light emitting section that has a light emitting element; a wavelength conversion section that absorbs light radiated from the light emitting section and emits the light having a wavelength different from that of the light radiated from the light emitting section; and a light guide section that is provided between the light emitting section and the wavelength conversion section and to propagate the light radiated from the light emitting section, and includes a first irradiation surface which radiates the propagated light toward a position in which the wavelength conversion section is provided, and a second irradiation surface which radiates the propagated light toward a position different from the position in which the wavelength conversion section is provided.
    Type: Application
    Filed: July 1, 2014
    Publication date: January 8, 2015
    Applicant: Toshiba Lighting & Technology Corporation
    Inventor: Ryuji Tsuchiya
  • Patent number: 8926152
    Abstract: A ring light illuminator with annularly arranged light sources is disclosed. To each light source there corresponds a light collector, a homogenizing means for light from the light source, and an anamorphic system for imaging an output of the homogenizing means into an area to be illuminated. The anamorphic system compensates deformations of a cross-sectional area of a light beam in a surface to be illuminated due to an oblique angle of incidence of the light beam onto the surface. The homogenizing means in embodiments is a rod, into which light from the light collector is directed. The end of the rod opposite the light collector is imaged by the anamorphic system into the area to be illuminated on the surface. Also disclosed is a method for illumination.
    Type: Grant
    Filed: July 25, 2011
    Date of Patent: January 6, 2015
    Assignee: KLA-Tencor Corporation
    Inventor: Dacian Burges
  • Patent number: 8926160
    Abstract: The light guide plate has at least two layers which are superposed on each other in the direction almost perpendicular to the light exit surface and contain the scattering particles at different particle concentrations, the scattering particles are polydisperse particles including a mixture of particles with different particle sizes, and the combined particle concentrations in each portion of the light guide plate is different by changing the thicknesses of the first layer and the second layer in the direction almost perpendicular to the exit surface.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: January 6, 2015
    Assignee: FUJIFILM Corporation
    Inventor: Osamu Iwasaki
  • Patent number: 8911131
    Abstract: An apparatus and method for coupling light from concentric illuminators into a light source in the form of a surface are disclosed. According to one embodiment, the apparatus comprises a plurality of concentric tubes, each tube including a light diffuser. The apparatus also has a sheet having a first edge with the plurality of concentric tubes placed along the first edge. Each tube of the plurality of concentric tubes diffuses light such that the light emanates in a predetermined pattern along the first edge of the sheet.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: December 16, 2014
    Assignee: I2iC Corporation
    Inventors: Udayan Kanade, Balaji Ganapathy
  • Patent number: 8913216
    Abstract: Provided are diffuser, method of manufacturing same, and liquid crystal display device employing the diffuser. Liquid crystal display device includes: backlight unit; liquid crystal panel on which image is formed by using light emitted by backlight unit, and comprising: color filter comprising plurality of pixels each of which comprises plurality of subpixels that are alternately arranged and transmit light in different wavelength bands; and liquid crystal layer whose transmittance is adjusted under electrical control; and diffuser disposed on a top surface or a bottom surface of the liquid crystal panel and comprising diffusing areas and transparent areas which alternate with each other at intervals corresponding to the width of the subpixels, wherein the liquid crystal layer comprises liquid crystal areas corresponding to the diffusing areas and liquid crystal areas corresponding to the transparent areas and the transmittances of the liquid crystal areas are adjusted according to the subpixels.
    Type: Grant
    Filed: February 12, 2009
    Date of Patent: December 16, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kyumin Choe, Seongmo Hwang, Moongyu Lee
  • Patent number: RE47288
    Abstract: Light diffusing optical fibers for use in illumination applications and which have a uniform color gradient that is angularly independent are disclosed herein along with methods for making such fibers. The light diffusing fibers are composed of a silica-based glass core that is coated with a number of layers including both a scattering layer and a phosphor layer.
    Type: Grant
    Filed: May 5, 2017
    Date of Patent: March 12, 2019
    Assignee: CORNING INCORPORATED
    Inventors: Stephan Lvovich Logunov, Paul John Shustack