Light Diffusing Patents (Class 313/116)
  • Patent number: 10345644
    Abstract: A liquid crystal display device includes a liquid crystal panel, a light-guiding plate disposed on a back face of the liquid crystal panel, at least one LED light source along an end face of the light-guiding plate, and a turning film between the liquid crystal panel and the light-guiding plate. The turning film includes a substrate layer and a prism array on a back face of the substrate layer. A retardation value of the substrate layer is no less than 0 nm and no greater than 100 nm. In a planar view: a transmission axis of a back face side-polarizing plate of the liquid crystal panel is perpendicular to the end face of the light-guiding plate; ridge lines in the prism array are parallel to the end face of the light-guiding plate; and the transmission axis of the back face side-polarizing plate is perpendicular to the ridge lines.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: July 9, 2019
    Assignee: Keiwa Inc.
    Inventor: Takahiro Tsuji
  • Patent number: 10281768
    Abstract: A surface light source device includes: a plurality of LEDs emitting a light; a substrate having the plurality of LEDs mounted thereon; a light distribution control element arranged on the substrate, and distributing the light emitted from the plurality of LEDs; a reflection sheet reflecting a part of the light distributed by the light distribution control element to a display surface side of the surface light source device; a housing accommodating the plurality of LEDs, the substrate, the light distribution control element, and the reflection sheet; and a retaining member retaining the light distribution control element and the substrate under a state in which the retaining member is in contact with a surface of the light distribution control element that is opposite to a surface of the light distribution control element in contact with the substrate.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: May 7, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Hideyuki Murai, Masaaki Takeshima, Kengo Nishikawa, Nobuhiro Miura
  • Patent number: 10156753
    Abstract: A backlight module and a display device are provided. The backlight module includes a light source, a plate-shaped light intensity splitting component and a reflecting sheet, wherein, the plate-shaped light intensity splitting component and the reflecting sheet are oppositely arranged to form an empty light guide space therebetween, and the plate-shaped light intensity splitting component is configured to split incident light from the light source into reflected light facing to the reflecting sheet and transmission light passing through the plate-shaped light intensity splitting component. The backlight module without adopting a light guide plate can save cost for manufacturing the backlight module and is advantageous to improve light utilization efficiency.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: December 18, 2018
    Assignee: BOE Technology Group Co., Ltd.
    Inventor: Shang Wang
  • Patent number: 10145545
    Abstract: A light-emitting element includes at least one flat light emitter having a first electrical contact portion formed on a side surface, and a housing partially surrounding the side surface of the flat light emitter, the housing including a second electrical contact portion formed on an inner surface of the housing and configured to mate with the first electrical contact portion.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: December 4, 2018
    Assignee: OSRAM OLED GMBH
    Inventors: Joerg Farrnbacher, Stefan Gschloessl, Christoph Gaerditz, Christian Kristukat
  • Patent number: 10047930
    Abstract: A lens including an upper surface having a curved portion having a changing curvature in a direction extending away from a central axis of the lens, and a lower surface having a concave portion disposed on the central axis of the lens. The concave portion of the lower surface includes an entrance disposed on a lower region of the concave portion and configured to receive light emitted from a light-emitting diode chip, and an upper end surface disposed on an upper region of the concave portion. The concave portion includes a width that narrows in a direction extending away from the entrance. The upper end surface is nonplanar.
    Type: Grant
    Filed: December 30, 2014
    Date of Patent: August 14, 2018
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventors: Eun Ju Kim, Bang Hyun Kim, Young Eun Yang
  • Patent number: 9761434
    Abstract: A lamp (10) is formed of a lamp capsule (1) sealed with a press seal (2) penetrated by electrical lead-ins (12), the lamp (1) being received in an insulating base (16) that has external electrical pins (18). Power leads (20) interconnect respective capsule lead-ins (12) and base pins (18). Power leads (20) are formed of stranded wire having a plurality of intertwined strands.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: September 12, 2017
    Assignee: OSRAM SYLVANIA Inc.
    Inventors: Arturo de Santiago Garcia, Miguel Perez, Francisco Rodriguez Salamanca
  • Patent number: 9608214
    Abstract: Provided are an integrated conductive substrate simultaneously serving as a substrate and an electrode, and an electronic device using the same. The integrated conductive substrate includes a metal layer composed of a non-ferrous metal, which has a first surface having a first root mean square roughness, and a semiconductor layer containing a semiconductor material, which has a second surface having a second root mean square roughness and is formed on the first surface. Here, the semiconductor layer includes a semiconductor-type planarization layer formed by a solution process using at least one of the semiconductor material and a precursor of the semiconductor material to planarize the first surface of the metal layer, and the second root mean square roughness is smaller than the first root mean square roughness.
    Type: Grant
    Filed: April 10, 2013
    Date of Patent: March 28, 2017
    Assignee: POSTECH ACADEMY-INDUSTRY FOUNDATION
    Inventors: TaeWoo Lee, YoungHoon Kim
  • Patent number: 9419248
    Abstract: The present invention provides an organic LED element having the significantly larger light emission area than conventional ones. The invention relates to an organic LED element, comprising: a transparent substrate; a light scattering layer; a transparent first electrode; an organic light-emitting layer; and a second electrode formed in this order, wherein the light scattering layer has a base material comprising a glass, and a plurality of scattering materials dispersed in the base material; the light scattering layer has side surfaces, and each of the side surfaces has a surface tilted at an angle larger than right angle from an upper surface on the first electrode side toward a bottom surface on the transparent substrate side; and the first electrode is placed so as to continuously cover the side surfaces.
    Type: Grant
    Filed: August 15, 2014
    Date of Patent: August 16, 2016
    Assignee: ASAHI GLASS COMPANY, LIMITED
    Inventor: Nobuhiro Nakamura
  • Patent number: 9385341
    Abstract: The present invention provides an organic LED element having the significantly larger light emission area than conventional ones. The invention relates to an organic LED element, comprising: a transparent substrate; a light scattering layer; a transparent first electrode; an organic light-emitting layer; and a second electrode formed in this order, wherein the light scattering layer has a base material comprising a glass, and a plurality of scattering materials dispersed in the base material; the light scattering layer has side surfaces, and each of the side surfaces has a surface tilted at an angle larger than right angle from an upper surface on the first electrode side toward a bottom surface on the transparent substrate side; and the first electrode is placed so as to continuously cover the side surfaces.
    Type: Grant
    Filed: August 15, 2014
    Date of Patent: July 5, 2016
    Assignee: ASAHI GLASS COMPANY, LIMITED
    Inventor: Nobuhiro Nakamura
  • Patent number: 9360747
    Abstract: This is to provide a transmission type screen where a viewing angle at which an image projected by a projector can be visually recognized is extremely wide, and image visibility from the both surfaces of the screen is excellent. The present invention relates to a transmission type screen comprising a light transmissive support and a light diffusion layer on at least one surface of the light transmissive support, wherein the light diffusion layer contains light diffusion fine particles and a xerogel. It preferably relates to the above-mentioned transmission type screen wherein the xerogel contains inorganic fine particles and a resin binder, and the inorganic fine particles are particles dispersed in an aggregated form having an average primary particle diameter of 18 nm or less and an average secondary particle diameter of 500 nm or less.
    Type: Grant
    Filed: February 25, 2013
    Date of Patent: June 7, 2016
    Assignee: MITSUBISHI PAPER MILLS LIMITED
    Inventor: Yukio Tokunaga
  • Patent number: 9298031
    Abstract: Disclosed are a wire mesh type diffuser plate, a method of fabricating the same, and a liquid crystal display device having the same. A film type diffuser plate having predetermined tension is fabricated through traction by using a wire mesh instead of a diffuser plate based on an existing extruding method to improve egg mura generated in a backlight unit. The liquid crystal display device includes: a liquid crystal panel displaying an image; a plurality of lamps installed below the liquid crystal panel and providing light to the liquid crystal panel; a plurality of optical sheets installed between the plurality of lamps and the liquid crystal panel; a reflection plate installed below the plurality of lamps; and a diffuser plate formed of a wire mesh having predetermined tension and installed between the plurality of lamps and the optical sheet and having predetermined tension.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: March 29, 2016
    Assignee: LG Display Co., Ltd.
    Inventors: YoungBae Han, SunHye Kang
  • Patent number: 9194545
    Abstract: A light-emitting device disclosed herein includes: an emission layer; a diffraction grating structure including a diffraction grating; and a diffusion layer having a structure for diffusing light which is transmitted from one face to another face. The light going out from the emission layer has a central wavelength ?. The diffraction grating has a period p which is not less than 1.0? and not more than 3.5?. The diffusion layer has a haze of 80% or more and a total light transmittance of 80% or less.
    Type: Grant
    Filed: September 3, 2012
    Date of Patent: November 24, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yasuhisa Inada, Seiji Nishiwaki
  • Patent number: 9142801
    Abstract: Provided is a method for manufacturing a flexible electrode substrate. The method includes forming a microlens array under a film, forming a transparent electrode layer on the film so as to oppose the microlens array, and forming a grid electrode between the film and the transparent electrode layer or on the transparent electrode layer. Herein, the grid electrode and the microlens array are formed on the both sides of the film by performing at least one of an inkjet printing process, a roll-to-roll printing process, a screen printing process, and a stamping printing process.
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: September 22, 2015
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jae Bon Koo, In-Kyu You, Yong Suk Yang, Minseok Kim
  • Patent number: 9136433
    Abstract: Disclosed herein is a light emitting diode. The light emitting diode includes a substrate, an n-type semiconductor layer placed on the substrate, an active layer placed on the n-type semiconductor layer, a p-type semiconductor layer placed on the active layer, a reflective layer placed on the p-type semiconductor layer, an n-type electrode electrically connected to the n-type semiconductor layer, a p-type electrode placed on the reflective layer; and a first patterned magnetic structure placed on the reflective layer, and separated from the p-type electrode. The light emitting diode can provide improved internal quantum efficiency using the patterned magnetic structure.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: September 15, 2015
    Assignee: GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Seong-Ju Park, Jae-Joon Kim, Youngchul Leem
  • 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: 9018836
    Abstract: A surface light source device including an organic EL element of a double-side emission type and a light output surface structure layer provided on at least one surface of the organic EL element, wherein the light output surface structure layer includes a concavo-convex structure on a surface opposite to the organic electroluminescent element, the concavo-convex structure having flat surface portions parallel to the surface and an inclined surface portion tilted relative to the flat surface portions, and a projected area formed by projecting the inclined surface portion in a direction perpendicular to the flat surface portions onto a plane parallel to the flat surface portions is not more than 0.1 times a total area of the flat surface portions.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: April 28, 2015
    Assignee: Zeon Corporation
    Inventors: Kenichi Harai, Hiroyasu Inoue
  • Publication number: 20150084497
    Abstract: A pear-shaped light-emitting diode (LED) light bulb housing is provided with a plurality of light-dispersing thickness variations in the bulb envelope. Dimples, bumps, or v-shaped grooves are provided in a middle portion of the bulb envelope in order to uniformly disperse light from LEDs as the light passes through the bulb envelope.
    Type: Application
    Filed: December 1, 2014
    Publication date: March 26, 2015
    Inventors: Farhad Nourbakhsh, Xiyuan He, Dave Carroll, Wendell Carroll
  • Patent number: 8975808
    Abstract: Embodiments of the present invention provide light diffusion into edge lines of a modular display, and thus provide a modular display that is capable of displaying a single, continuous image without visible edge lines between individual display modules. One display module includes a multitude of pixels that contain red, green, blue, and white light sources. The replacement of an edge line blocking dam with the light diffusion edge line of the individual display module can provide a single, continuous image to be displayed thereon without visible, image-quality-reducing edge lines. With various heights of the buffer layer, the light can concentrate on the edge line in modular display. The individual display modules can be light emitting diode (LED), organic LED (OLED), UV LED, RGB LED, Phosphor-based LED, Quantum dot LED, or displays based upon a combination thereof. Furthermore, the variable height buffer layer allows for a modular display image in 2-dimensional or 3-dimensional formats.
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: March 10, 2015
    Assignee: Lightizer Korea Inc.
    Inventor: Byoung gu Cho
  • Patent number: 8975806
    Abstract: A lens includes a first lens section and a second lens section, which are integrally formed. The first lens section is formed in a hemispherical shell shape including a first recess opened toward one side of an optical axis direction in which light from a light source is made incident. The second lens section is formed in a hemispherical shell shape including a second recess opened toward the other side of the optical axis direction.
    Type: Grant
    Filed: August 29, 2011
    Date of Patent: March 10, 2015
    Assignee: Toshiba Lighting & Technology Corporation
    Inventors: Toshitake Kitagawa, Makoto Sakai
  • Patent number: 8963411
    Abstract: A control console assembly includes a diffusion layer and an electrode of a capacitive sensor. The diffusion layer has an outer surface and an inner surface substantially opposite the outer surface. The electrode of the capacitive sensor is mated to at least one of the inner surface or the outer surface of the diffusion layer.
    Type: Grant
    Filed: November 4, 2009
    Date of Patent: February 24, 2015
    Assignee: Methode Electronics, Inc.
    Inventors: Richard A. Boelstler, Eluid David Carter
  • Patent number: 8946978
    Abstract: A lighting device (2) comprises a light source (210) having a main forward emission direction (20), and an envelope (220) in which the light source (210) is arranged. The envelope (220) comprises an upper portion (225) having scattering properties and being arranged to reflect a part of the light from the light source (210) laterally and backwardly relative to the main forward emission direction (20) and transmit a part of the light from the light source (210). The light intensity distribution of the lighting device (2) is more uniform, as backward and lateral light intensity is increased while the light in the main forward emission direction (20) is still admitted.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: February 3, 2015
    Assignee: Koninklijke Philips N.V.
    Inventors: Johannes Petrus Maria Ansems, Joris Hubertus Antonius Hagelaar, Peter Johannes Martinus Bukkems, Vincent Stefan David Gielen, Reinier Imre Anton Den Boer, Shi Bei He
  • Publication number: 20150016110
    Abstract: Disclosed is a lighting device having wide light-distribution characteristics. The lighting device includes a base; a protrusion disposed on the base; and a light emitting module disposed on the protrusion; wherein the light emitting module comprises a plurality of light emitting diodes inclined inward with respect to the a protruding direction of the protrusion. Accordingly, the lighting device can provide wide light-distribution characteristics.
    Type: Application
    Filed: June 30, 2014
    Publication date: January 15, 2015
    Inventors: Yoo Jin KIM, Jung Hwa Jung
  • Patent number: 8884502
    Abstract: An OLED assembly comprises a base and a planar OLED device mounted on the base. A planar light diffuser sheet is removably attached relative to the base and OLED device. A releasable attachment mechanism is operably configured between the light diffuser sheet and the base. The light diffuser sheet is oriented relative to the OLED device so as to provide a selected diffusive property to light emitted from the OLED device. The light diffuser sheet is removable from the base upon release of the attachment mechanism and can be substituted with a different light diffuser sheet. A luminaire may incorporate the OLED assembly, wherein the luminaire has fixture in which the OLED assembly is received.
    Type: Grant
    Filed: July 25, 2011
    Date of Patent: November 11, 2014
    Assignee: General Electric Company
    Inventors: Deeder Aurongzeb, Thomas Alexander Knapp, Olivia Boyle
  • Patent number: 8882305
    Abstract: According to one embodiment, in a constricted part of a globe, one end is set to a minimum diameter, the other end is set to a maximum diameter, and a diameter thereof increases from the one end side to the other end side. The constricted part of the globe is concaved into the inside of an imaginary straight line connecting an outer edge of the one end and an outer edge of the other end when viewed in section. A light source part includes a semiconductor light-emitting element and is contained in the globe so that a light-emitting part is positioned between both the ends of the constricted part of the globe. A cap is positioned on one end side of the globe.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: November 11, 2014
    Assignee: Toshiba Lighting & Technology Corporation
    Inventors: Jun Sasaki, Ryotaro Matsuda, Naoto Mori, Yoshiyuki Matsunaga, Hideki Okawa, Takeo Yasuda
  • Patent number: 8878423
    Abstract: Disclosed is a light-emitting device, including an LED light source and a light diffusion element. The light diffusion element, covering at least a part of the LED light source, is composed of a first polymer, a second polymer, or a blend of them. The first polymer has a larger crystal diameter than that of the second polymer. The first polymer is made of polypropylene or ethylene-propylene copolymer. The second polymer is made of polyethylene, polypropylene, or ethylene-propylene copolymer. A blend of certain ratios of the first and second polymer gives rise of an excellent material that has improved light diffusion. This material can be widely adopted to current light fixtures for its evenly distributed lighting and great brightness.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: November 4, 2014
    Assignee: Industrial Technology Research Institute
    Inventors: Pei-Ying Chang, Shi-Ing Huang, Tien-Fu Huang, Chen-Dao Shiao
  • Patent number: 8872415
    Abstract: A substrate includes: a plurality of pixels arranged two-dimensionally on a common wiring substrate, and each including a plurality of types of light emitting elements that differ from one another in emission color; a plurality of light-scattering sections each provided for a corresponding one of the pixels, and each provided above the corresponding one of the pixels; and a light-shielding section provided in a gap between adjacent ones of the pixels, or provided in an opposing region that opposes the gap when viewed in a normal direction of the wiring substrate.
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: October 28, 2014
    Assignee: Sony Corporation
    Inventor: Isamu Kobori
  • Publication number: 20140312762
    Abstract: An LED light bulb includes a holder for electrically connecting with a power source, an LED mounted on the holder, an envelope mounted on the holder and covering the LED, and a light dispersing plate attached to an inner surface of the envelope. The light dispersing plate is made of a transparent material with a plurality of irregular air bubbles therein. Light generated by the LED and radiating to the envelope is refracted, reflected and scattered by the bulbs before the light emits out of the LED light bulb.
    Type: Application
    Filed: November 12, 2013
    Publication date: October 23, 2014
    Applicant: ADVANCED OPTOELECTRONIC TECHNOLOGY, INC.
    Inventors: MING-TA TSAI, CHUNG-MIN CHANG, PEI-YING WANG
  • Patent number: 8845119
    Abstract: A light emitting device (1) is configured to radiate light with an optical axis A at the center, and is provided with a light source (2), and a lens (3) that radially expands the light from light source (2). The light source (2) has a light emitting surface (21) extending in an X direction orthogonal to the optical axis A. The lens (3) is configured to have a greater refractive power in a Y direction orthogonal to the X direction than in the X direction. For example, the lens (3) has a light entrance surface (31) including an anamorphic curved surface with different curve forms between the X direction and the Y direction.
    Type: Grant
    Filed: January 21, 2011
    Date of Patent: September 30, 2014
    Assignee: Panasonic Corporation
    Inventors: Tomoko Iiyama, Motonobu Yoshikawa, Daizaburo Matsuki
  • Publication number: 20140268744
    Abstract: A pear-shaped light-emitting diode (LED) light bulb housing is provided with a plurality of light-dispersing thickness variations in the bulb envelope. Dimples, bumps, or v-shaped grooves are provided in a middle portion of the bulb envelope in order to uniformly disperse light from LEDs as the light passes through the bulb envelope.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: BBY SOLUTIONS, INC.
    Inventors: Farhad Nourbakhsh, Xiyuan He, Dave Carroll, Wendell Carroll
  • Patent number: 8815629
    Abstract: A method of manufacturing an optical reflector including an alternating stack of at least one first layer of complex refraction index n1 and at least one second layer of complex refraction index n2, in which the first layer includes semiconductor nanocrystals, including the following steps: calculation of the total number of layers of the stack, of the thicknesses of each of the layers and of the values of complex refraction indices n1 and n2 on the basis of the characteristics of a desired spectral reflectivity window of the optical reflector, including the use of an optical transfer matrices calculation method; calculation of deposition and annealing parameters of the layers on the basis of the total number of layers and of the values of previously calculated complex refraction indices n1 and n2; deposition and annealing of the layers in accordance with the previously calculated parameters.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: August 26, 2014
    Assignee: Commissariat a l'energie atomique et aux energies alternatives
    Inventors: Kavita Surana, Mathieu Baudrit, Pierre Mur, Philippe Thony
  • Publication number: 20140203700
    Abstract: A light-emitting device disclosed herein includes: an emission layer; a diffraction grating structure including a diffraction grating; and a diffusion layer having a structure for diffusing light which is transmitted from one face to another face. The light going out from the emission layer has a central wavelength ?. The diffraction grating has a period p which is not less than 1.0? and not more than 3.5?. The diffusion layer has a haze of 80% or more and a total light transmittance of 80% or less.
    Type: Application
    Filed: September 3, 2012
    Publication date: July 24, 2014
    Applicant: PANASONIC CORPORATION
    Inventors: Yasuhisa Inada, Seiji Nishiwaki
  • Publication number: 20140191653
    Abstract: The present disclosure discloses LED lamps and enclosures comprising light transparent polymer coatings comprising light diffusing particles as well as methods for providing improved luminous intensity distribution. More particularly, the present disclosure relates to enclosures comprising light-transparent polymer coatings comprising a light diffusing particles on at least one surfaces of the enclosure of an LED lamp.
    Type: Application
    Filed: July 25, 2013
    Publication date: July 10, 2014
    Applicant: Cree, Inc.
    Inventors: Mark Edmond, Shaow B. Lin, Gerald H. Negley, Paul Kenneth Pickard
  • Publication number: 20140191648
    Abstract: The present disclosure discloses a method for providing protective coatings onto one or more surfaces of a frangible enclosure of an LED lamp and a lamp prepared therefrom. More particularly, the present disclosure relates to LED lamps comprising polymer coatings on at least one or more surfaces of an enclosure of an LED lamps.
    Type: Application
    Filed: January 10, 2013
    Publication date: July 10, 2014
    Applicant: CREE, INC.
    Inventor: SHAOW B. LIN
  • Publication number: 20140139097
    Abstract: Embodiments of the present invention provide light diffusion into edge lines of a modular display, and thus provide a modular display that is capable of displaying a single, continuous image without visible edge lines between individual display modules. One display module includes a multitude of pixels that contain red, green, blue, and white light sources. The replacement of an edge line blocking dam with the light diffusion edge line of the individual display module can provide a single, continuous image to be displayed thereon without visible, image-quality-reducing edge lines. With various heights of the buffer layer, the light can concentrate on the edge line in modular display. The individual display modules can be light emitting diode (LED), organic LED (OLED), UV LED, RGB LED, Phosphor-based LED, Quantum dot LED, or displays based upon a combination thereof. Furthermore, the variable height buffer layer allows for a modular display image in 2-dimensional or 3-dimensional formats.
    Type: Application
    Filed: November 18, 2013
    Publication date: May 22, 2014
    Applicant: Lightizer Korea Inc.
    Inventor: Byoung gu Cho
  • Patent number: 8723404
    Abstract: The present invention aims to provide a light-diffusing heat shrinkable tube which has light diffusibility that enables LED point light sources to give an impression of a surface light source such as a conventional fluorescent lamp. The tube is also capable of suppressing scattering of broken fragments of a transparent pipe that includes the light sources, in the case of an unexpected accident including falling of the pipe. The present invention also aims to provide a linear LED light including the light-diffusing heat shrinkable tube. The light-diffusing heat shrinkable tube including a polyester resin and a light diffusing agent, the polyester resin having an inherent viscosity of 0.8 to 1.4 dl/g, the tube comprising 0.1 to 2.5 wt % of the light diffusing agent, the tube having a thickness of 60 to 300 ?m.
    Type: Grant
    Filed: February 17, 2012
    Date of Patent: May 13, 2014
    Assignee: Gunze Limited
    Inventors: Masakazu Masuda, Ichiro Arai
  • Patent number: 8710724
    Abstract: An LED light source lamp includes a housing configured to be attached to a lamp holder; an LED module provided in the housing; a drive circuit provided in the housing and configured to drive the LED module to cause the LED module to emit light; an LED installation plate on which the LED module is installed; a cover arranged to block an optical axis of the LED module and configured to transmit light emitted from the LED module; and a separation member configured to separate the drive circuit from a space between the LED module and the cover in the housing. The LED installation plate has a rear surface, opposite the surface on which the LED module is installed. The rear surface is configured to closely contact the lamp holder, and is a part of the housing.
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: April 29, 2014
    Assignee: Panasonic Corporation
    Inventors: Hiroki Nakagawa, Toshiyuki Namura, Yoshinori Kakuno, Kazushige Sugita
  • Patent number: 8704442
    Abstract: A light emitting diode (LED) bulb configured to scatter certain wavelengths of light. The LED bulb includes a base having threads, a bulb shell, at least one LED, and a plurality of particles disposed within the bulb shell. The plurality of particles has a first and second set of particles. The first set of particles is configured to scatter short wavelength components of light emitted from the at least one LED and has particles with an effective diameter that is a fraction of the dominant wavelength of the light emitted from the at least one LED. The second set of particles is configured to scatter light emitted from the at least one LED, and has particles with an effective diameter equal to or greater than the dominant wavelength of the light emitted from the at least one LED.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: April 22, 2014
    Assignee: Switch Bulb Company, Inc.
    Inventors: Ronald J. Lenk, Carol Lenk
  • Publication number: 20140097738
    Abstract: According to one embodiment, a lighting device includes a light source with a directivity and a light-transmitting cover including a light-transmitting area configured to emit light from the light source to the outside. The light-transmitting cover is in a dome shape and formed of a material doped with scattered fillers dispersed in a volume thereof. The light-transmitting cover includes a vertically elongated shape with an aspect ratio higher than 0.6, and having a transmittance of 70% or less. The aspect ratio is the quotient of a height of the light-transmitting area in an optical axis thereof divided by the width of a rear-end portion of the light-transmitting area.
    Type: Application
    Filed: December 11, 2013
    Publication date: April 10, 2014
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Shusuke MORITA, Masahiro Yokota, Osamu Ono, Takeshi Ookawa, Ken Takahashi, Nobuo Kawamura, Hideo Oota, Hidemi Matsuda, Takashi Nishimura
  • Patent number: 8692446
    Abstract: A light extraction film having nanoparticles with engineered periodic structures. The light extraction film includes a substantially transparent substrate, low index one-dimensional or two-dimensional periodic structures on the substrate, and a high index planarizing backfill layer applied over the periodic structures. Light scattering nanoparticles are either applied in a layer over the periodic structures or included in the backfill layer.
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: April 8, 2014
    Assignee: 3M Innovative Properties Company
    Inventors: Jun-Ying Zhang, Encai Hao, Vivian W. Jones, Terry L. Smith, Sergey A. Lamansky, Ha T. Le, Dawn Qiu, William B. Kolb, James M. Battiato, David B. Stegall
  • Publication number: 20140091698
    Abstract: A lamp device includes a substrate body, a light source part mounted on the substrate body, and a contact portion electrically connected to the light source part. A cover receives the light source part in a space formed by the cover and the substrate body, is light transmissive at least at a position facing the light source part, and spatially separates the light source part mounted on the substrate body and the contact portion.
    Type: Application
    Filed: August 30, 2013
    Publication date: April 3, 2014
    Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATION
    Inventors: Junichi Kimiya, Kenji Nezu, Kazunari Higuchi, Makoto Otsuka, Takeshi Osada, Yoshiyuki Tamaki
  • Patent number: 8678611
    Abstract: A light emitting diode (LED) lamp includes a tube having a transparent first section and an opaque second section. An LED disposed inside of the tube. The second section is has an inner surface having a light diffusive surface so that the LED light is diffusively reflected. The LED is disposed so that a total amount of direct light from the LED to the first section is smaller than a total amount of indirect light that is incident on the first section as a result of being reflected by the second section (i.e., scattered or diffused light). The LED is disposed so that a light axis of the LED points toward the inner surface of the second section.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: March 25, 2014
    Assignee: GT Biomescilt Light Limited
    Inventors: Sidney Chun Kit Chu, Oon Siang Ling, Low Kean Choong, Chew Tong Fatt
  • Patent number: 8643265
    Abstract: In a backlight assembly, a light emitting module is divided into a plurality of light generating blocks each sequentially outputting a plurality of primary colors of light having different wavelengths. The light emitting module includes first and second base substrates, and a plurality of electroluminescent units disposed between the first and second base substrates and arranged in each of the light generating blocks. The light emitting module includes a barrier arranged corresponding to a boundary between two adjacent light generating blocks between the first and second base substrates to prevent the primary colors of light from traveling an adjacent light generating block. Thus, a mixture of colored light from the light generating blocks is prevented, thereby improving color reproducibility of the display apparatus.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: February 4, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Haeil Park, Jinseob Byun, Gunwoo Kim
  • Patent number: 8643259
    Abstract: An optical sheet comprising: a transparent substrate having a first surface S1 and a second surface S2; a first light diffusion layer provided on a first surface S1 side of the transparent substrate; and a second light diffusion layer provided on a second surface S2 side of the transparent substrate, wherein a haze x1 (%) of the first light diffusion layer and a haze x2 (%) of the second light diffusion layer satisfy f(x1)/(f(x1)+f(x2))?2/3 (where when x?88, a function f(x)=1.9×(ln(1?x/90))2, and when x>88, the function f(x)=22.5x?1952.5) and (f(x1)+f(x2))?12; and a surface light source device having the same.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: February 4, 2014
    Assignee: Zeon Corporation
    Inventors: Hiroyasu Inoue, Kenichi Harai
  • Patent number: 8629604
    Abstract: An apparatus for providing a photoluminescent light source is disclosed. In one embodiment, the apparatus comprises a light source that emanates light of a particular spectrum, a camera, and a selective mirror placed between the light source and camera. The selective mirror transmits light of a spectrum detected by the camera and reflects light of a spectrum generated by the light source. The light source is transparent to light incident on its face.
    Type: Grant
    Filed: April 23, 2012
    Date of Patent: January 14, 2014
    Assignee: I2iC Corporation
    Inventors: Udayan Kanade, Gaurav Kulkarni, Karthikk Sridharan, Manas Alekar, Manohar Joshi, Sanat Ganu, Balaji Ganapathy
  • Patent number: 8624482
    Abstract: A blue LED device has a transparent substrate and a reflector structure disposed on the backside of the substrate. The reflector structure includes a Distributed Bragg Reflector (DBR) structure having layers configured to reflect yellow light as well as blue light. In one example, the DBR structure includes a first portion where the thicknesses of the layers are larger, and also includes a second portion where the thicknesses of the layers are smaller. In addition to having a reflectance of more than 97.5 percent for light of a wavelength in a 440 nm-470 nm range, the overall reflector structure has a reflectance of more than 90 percent for light of a wavelength in a 500 nm-700 nm range.
    Type: Grant
    Filed: August 16, 2012
    Date of Patent: January 7, 2014
    Assignee: Toshiba Techno Center Inc.
    Inventor: Chao-Kun Lin
  • Patent number: 8604679
    Abstract: An LED light source lamp has built-in drive circuits in a housing, and is used by being attached to a lamp holder. An LED installation plate is arranged, in a main space of the housing, on an attachment side to the lamp holder. An LED module on a surface, of the LED installation plate, opposite to the lamp holder, is a collection of LEDs driven by the drive circuit. A light diffusion member is arranged so as to block the optical axis of light emitted by each LED of the LED module. Here, the drive circuits are arranged in an outer peripheral space, between the LED module and the light diffusion member, so as not to block the optical axis of light emitted by each LED of the LED module.
    Type: Grant
    Filed: February 2, 2011
    Date of Patent: December 10, 2013
    Assignee: Panasonic Corporation
    Inventors: Hiroki Nakagawa, Toshiyuki Namura, Yoshinori Kakuno, Kazushige Sugita
  • Patent number: 8604684
    Abstract: A UV stable optical element and an LED lamp using such an element are disclosed. Embodiments of the invention include an optical element made at least in part from an inherently UV stable polyester, so that consumable UV-stabilizing additives are not needed. Thus, the substrate of the optical element can maintain transparency and other desirable characteristics over longer periods of time in the face of high ultraviolet light exposure. In some embodiments, the optical element includes the inherently UV stable polyester and a phosphor for remote wavelength conversion. In some embodiments, the UV stable polyester is an aromatic polyester such as polyarylate. The optical element according to example embodiments of the invention can be used in an LED lamp.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: December 10, 2013
    Assignee: Cree, Inc.
    Inventor: Paul Kenneth Pickard
  • Patent number: 8598771
    Abstract: A glass article that is ion-exchangeable and has at least one roughened surface. The roughened surface has a distinctness-of-reflected image DOI of less than 90 when measured at an incidence angle of 20°. A pixelated display system that includes such a glass article is also provided.
    Type: Grant
    Filed: August 18, 2010
    Date of Patent: December 3, 2013
    Assignee: Corning Incorporated
    Inventors: Krista L Carlson, Shandon D Hart, Kelvin Nguyen, Lu Zhang
  • Patent number: 8587187
    Abstract: Embodiments of the present invention provide light diffusion into edge lines of a modular display, and thus provide a modular display that is capable of displaying a single, continuous image without visible edge lines between individual display modules. One display module includes a multitude of pixels that contain red, green, blue, and white light sources. The replacement of an edge line blocking dam with the light diffusion edge line of the individual display module can provide a single, continuous image to be displayed thereon without visible, image-quality-reducing edge lines. With various heights of the buffer layer, the light can concentrate on the edge line in modular display. The individual display modules can be light emitting diode (LED), organic LED (OLED), UV LED, RGB LED, Phosphor-based LED, Quantum dot LED, or displays based upon a combination thereof. Furthermore, the variable height buffer layer allows for a modular display image in 2-dimensional or 3-dimensional formats.
    Type: Grant
    Filed: December 6, 2010
    Date of Patent: November 19, 2013
    Inventor: Byoung gu Cho
  • Publication number: 20130300285
    Abstract: Provided are a light-emitting device that emits light suppressed in unevenness in luminance (furthermore, unevenness in color), a lighting device that can irradiate planar light suppressed in unevenness in luminance (furthermore, unevenness in color), a display device that can display an image suppressed in unevenness in luminance (furthermore, unevenness in color), and a method for producing a light-emitting device that can easily produce the light-emitting device. A light-emitting device 10 includes a light-emitting element 12, a phosphor layer 13 containing a phosphor that is excited by the light emitted by the light-emitting element 12 to emit fluorescence, a substrate 11 with the light-emitting element 12 and the phosphor layer 13 on the surface, and a resin body 14 that seals the light-emitting element 12 and the phosphor layer 13. An additional member 15 is provided on an opposite surface 14a opposed to the light-emitting surface of the light-emitting element 12 on the surface of the resin body 14.
    Type: Application
    Filed: January 18, 2012
    Publication date: November 14, 2013
    Applicant: SHARP KABUSHIKI KAISHA
    Inventor: Shin Ito