Prismatic Type Patents (Class 362/339)
  • Patent number: 10802335
    Abstract: A light diffusion plate for a direct-lit backlight unit is provided which is capable of inhibiting generation of defects in production, and which is superior in mechanical strength even if being formed to be thin. The light diffusion plate for a direct-lit backlight unit includes a resin matrix, and a diffusion agent dispersed in the resin matrix, in which a principal component of the resin matrix is a polycarbonate resin, a ratio Mw/Mn of a polystyrene equivalent weight average molecular weight Mw to a number average molecular weight Mn of the polycarbonate resin, as determined by gel permeation chromatography is no less than 1.8 and no greater than 3.2, and the weight average molecular weight Mw of the polycarbonate resin is no less than 3.0×104 and no greater than 6.5×104. The light diffusion plate has an average thickness of preferably no less than 0.1 mm and no greater than 1.0 mm.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: October 13, 2020
    Assignee: Keiwa Inc.
    Inventor: Motohiko Okabe
  • Patent number: 10775547
    Abstract: A lightguide having opposing first and second major surfaces where the first major surface includes a plurality of extended features and a plurality of discrete features is described. The lightguide has a viewable area having a length at least 100 times a thickness of the lightguide. The extended features extend in a first in-plane direction across at least 90 percent of the length L of the viewable area. The discrete features are spaced apart along the length and width of the viewable area. The discrete features may be disposed in spaces between the extended features. The discrete features may have faces extending between and connecting adjacent extended features.
    Type: Grant
    Filed: March 12, 2018
    Date of Patent: September 15, 2020
    Assignee: 3M Innovation Properties Company
    Inventors: Robert M. Emmons, David A. Rosen, Nicholas A. Johnson, Gary T. Boyd, Trevor W. Stolber, Owen M. Anderson, Graham M. Clarke, Sherie A. Kristie, Edward C. Roberts, Kristy A. Gillette
  • Patent number: 10436424
    Abstract: Provided is a light fixture including an end portion that features a mechanism configured to lock the light fixture via the end portion to another end portion disposed at one extremity of another light fixture. The mechanism also includes a lever configured to lock the light fixture with the other end portion.
    Type: Grant
    Filed: June 6, 2017
    Date of Patent: October 8, 2019
    Assignee: CURRENT LIGHTING SOLUTIONS, LLC
    Inventor: Steve Germain
  • Patent number: 10295825
    Abstract: The invention relates to a projection system for a display, in particular a heads-up display, comprising a liquid crystal screen (12) and a back-lighting device (14) for said screen (12). The projection system is characterized in that said back-lighting device (14) comprises at least one light source (16) emitting light towards the screen (12), at least one lens (38a, 38b) suitable for collimating the light from the light source (16) towards the liquid-crystal screen (12), and reflective means (26) arranged on the surface of the lens (38a, 38b) located on the side of the light source (16), arranged such as to allow light to pass through same towards the screen (12) and to reflect towards the screen (12) almost all of the light propagating towards the lens (38a, 38b).
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: May 21, 2019
    Assignee: VALEO COMFORT AND DRIVING ASSISTANCE
    Inventor: Michael Irzyk
  • Patent number: 10262977
    Abstract: An image generator for use in a display device, the image generator comprising: a plurality of ILED array chips each comprising a plurality of ILED emitters and arranged in an array such that each of a plurality of pixels of the image generator comprises an ILED emitter from each of a plurality of adjacent ILED array chips. The total area of ILED emitter material may be less than 50% of the area of each pixel. The image generator may comprise secondary optics in optical communication with an output of the plurality of ILED emitters of an ILED array chip and configured to direct light from the ILED emitters towards an emission region of the associated pixel.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: April 16, 2019
    Assignee: Facebook Technologies, LLC
    Inventors: William Henry, Padraig Hughes, Joseph O'Keeffe
  • Patent number: 10197713
    Abstract: A light directing film includes a structured major surface with a plurality of microstructures extending along a first direction. Each microstructure has a first region and a second region different from the first region, a substantially constant height in the first region and a non-constant maximum height in the second region greater than the substantially constant height in the first region, and a same lateral cross sectional shape in the first region and the second region.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: February 5, 2019
    Assignee: 3M Innovative Properties Company
    Inventors: Alan B. Campbell, Dale L. Ehnes, John F. Van Derlofske, III, Mark R. Dupre, Stephen J. Dreyer, Patrick H. Marushin, Todd M. Johnson, Bryan V. Hunt
  • Patent number: 10001595
    Abstract: A display device includes a lower substrate, a light source, a polarized light activation layer, an inner polarizer layer, a light modulation layer, and an upper substrate. The lower substrate has a light entrance side, and a bottom surface and a top surface opposite to each other. The light source generates light entering the lower substrate through the light entrance side. The light entering into the lower substrate at least partially passes through the bottom surface to enter and excite the polarized light activation layer into generating a plurality of polarized color lights of different colors. The polarized color lights have their polarization levels increased by the inner polarizer layer before reaching the light modulation layer.
    Type: Grant
    Filed: August 15, 2016
    Date of Patent: June 19, 2018
    Assignee: AU OPTRONICS CORPORATION
    Inventor: Syuan-Ling Yang
  • Patent number: 9822942
    Abstract: A low-beam headlight element includes a lens (301) for modifying the distribution pattern of light penetrating the lens, and a reflector element (302) including a first end having a place for a light source (303) and a second end having an opening constituting a passage for the light penetrating the lens. The thickness of the lens is shaped to decrease more strongly towards a first edge (303) of the lens than towards an opposite second edge of lens so as to provide more refractivity on a first area of the lens abutting on the first edge than on a second area of the lens abutting on the second edge. The refractivity on the first area produces a cutoff line in a resulting light distribution pattern. Hence, for achieving a cutoff line meandering in a desired way, there is no need for a screen element which converts light into heat.
    Type: Grant
    Filed: April 24, 2014
    Date of Patent: November 21, 2017
    Assignee: LEDIL OY
    Inventor: Hannu Hukkanen
  • Patent number: 9732923
    Abstract: The invention describes an integral lighting assembly (1A, 1B, 1C, 1D, 1E) comprising an optical arrangement (2, 3); a first light source (S1) for generating a first beam (L1) of light; a first collimator (C1) for directing the first beam (L1) at the optical arrangement (2, 3); a second light source (S2) for generating a second beam (L2) of light; and a second collimator (C2) for directing the second beam (L2) at the optical arrangement (2, 3), wherein the optical arrangement (2, 3) is realized to manipulate the first and second light beams (L1, L2) to give a first exit beam (BLO) and a second exit beam (BRI) such that the first exit beam (BLO) and the second exit beam (BRI) are partially combined in an overlap region (44) on a projection plane (4) located at a predefined distance from the integral lighting assembly (1A, 1B, 1C, 1D, 1E). The invention further describes an automotive headlamp arrangement (12) comprising such an integral lighting assembly (1A, 1B, 1C, 1D, 1E).
    Type: Grant
    Filed: March 21, 2011
    Date of Patent: August 15, 2017
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Josef Andreas Schug, Benno Spinger
  • Patent number: 9689547
    Abstract: A projection lens is disposed so that light emitted from a light source passes the projection lens. A shade is disposed in rear of the projection lens so as to block a part of the light emitted from the light source. The projection lens includes a first region and a second region. The first region has a first light scattering property. The second region has a second light scattering property lower than the first light scattering property. The shade and the projection lens are disposed so that a part of light projecting an edge of the shade as a peripheral edge of a light distribution pattern passes through the first region and another part of the light projecting the edge of the shade passes through the second region.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: June 27, 2017
    Assignee: KOITO MANUFACTURING CO., LTD.
    Inventors: Akinori Matsumoto, Shingo Kato
  • Patent number: 9671546
    Abstract: Provided are a backlight assembly and a display device having the same. A backlight assembly includes a light source unit which emits light, a light guide plate (LGP) including an incident surface upon which light emitted from the light source unit is incident, an opposite surface which faces the incident surface, and an exit surface which connects the incident surface and the opposite surface and from which light incident upon the incident surface exits, a wavelength conversion member which is located on the exit surface and converts a wavelength of light output from the exit surface, and a first reflective member which is located on the opposite surface and reflects light incident upon the opposite surface, wherein the first reflective member includes a plurality of first color patterns which face the opposite surface.
    Type: Grant
    Filed: June 5, 2014
    Date of Patent: June 6, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seung Hwan Baek, Dong Hoon Kim, Seok Hyun Nam, Chan Jae Park, Dong Hyeon Lee, Yeong Bae Lee
  • Patent number: 9606289
    Abstract: A light guide plate in a backlight module includes a light guide layer, a carrier layer, and a reflection sheet. The light guide layer includes a first surface and an opposite second surface. A plurality of light guide outlets is formed on the first surface. The carrier layer includes a third surface and an opposite fourth surface. The third surface is adhered with the second surface. The carrier layer defines a receiving groove having a fifth surface parallel with the third surface. A plurality of through holes passes through the fifth surface to the third surface to expose portions of the second surface. The reflection sheet is arranged on the first surface and is aligned with the receiving groove.
    Type: Grant
    Filed: November 28, 2014
    Date of Patent: March 28, 2017
    Assignee: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: Jen-Tsorng Chang
  • Patent number: 9575238
    Abstract: A backlight module including a light guide plate, a plurality of point light sources and a frame is provided. The light guide plate includes a body, a positioning structure and a plurality of first micro-structures. The body has at least one light incident surface, an upper surface connected with the light incident surface, and at least one side surface connected with the light incident surface and the upper surface. The positioning structure is located on the side surface, wherein the upper surface has a first eliminating region adjacent to and surrounding the positioning structure. The first micro-structures are arranged on the upper surface except the first eliminating region. The point light sources face the light incident surface. The light guide plate is positioned in the frame by matching the positioning structure with a positioning component of the frame. A display device including the backlight module aforementioned is also provided.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: February 21, 2017
    Assignee: Au Optronics Corporation
    Inventors: Ming-Lung Chen, Ming-Chun Hsu, Wei-Chun Chung
  • Patent number: 9419250
    Abstract: Methods of making transfer films to form bridged nanostructures are disclosed. The methods include applying a thermally stable backfill layer to a structured surface of a sacrificial template layer.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: August 16, 2016
    Assignee: 3M Innovative Properties Company
    Inventors: Evan L. Schwartz, Justin P. Meyer, Olester Benson, Terry O. Collier, Michael Benton Free, Robert F. Kamrath, Mieczyslaw H. Mazurek, David B. Olson, K. Raveesh Shenoy, Martin B. Wolk
  • Patent number: 9323105
    Abstract: A backlight module includes a frame, a light source, a light guide plate, a wavelength conversion layer, and an optical film group. The light source is disposed in the frame. The light guide plate is disposed in the frame, and the light guide plate includes a light emitting surface, a light incident surface, and at least one side wall. The light source is disposed corresponding to the light incident surface. The side wall connects the light emitting surface and the light incident surface. The wavelength conversion layer is at least disposed on the side wall. The wavelength conversion layer is configured for converting light provided by the light source into white color. The optical film group is disposed on the light emitting surface of the light guide plate.
    Type: Grant
    Filed: April 7, 2014
    Date of Patent: April 26, 2016
    Assignee: AU OPTRONICS CORPORATION
    Inventor: Chun-Ting Hsu
  • Patent number: 9257580
    Abstract: A monolithic transparent plate including, on at least one of its faces, at least one region textured by a plurality of geometric features in relief relative to a general plane of the face, each feature having a cross section, parallel to the general plane, which diminishes with distance from the face, from a base to a peak of the feature. The area of the zones of the textured region for which the inclination angle relative to the general plane is less than 30° C. represents less than 35% of the total area of the textured region.
    Type: Grant
    Filed: July 15, 2010
    Date of Patent: February 9, 2016
    Assignee: SAINT-GOBAIN GLASS FRANCE
    Inventors: Michele Schiavoni, Patrick Gayout, Wolfgang Andreas Nositschka
  • Patent number: 9249938
    Abstract: An LED (light emitting diode) light source module includes a first optical lens, an LED light source received in a groove of the first optical lens and a second optical lens located at a light path of the LED light source and above the first optical lens. The first optical lens includes a first reflecting surface around the groove and a second reflecting surface. The second optical lens includes a reflecting surface facing the LED light source, and light which is incident to the reflecting surface of the second optical lens is reflected thereby to the first reflecting surface and the second reflecting surface of the first optical lens. A light diffusion plate is attached to the second optical lens at a position away from the reflecting surface of the second optical lens.
    Type: Grant
    Filed: November 5, 2013
    Date of Patent: February 2, 2016
    Assignee: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Chau-Jin Hu, Yung-Lun Huang
  • Patent number: 9119331
    Abstract: A light emitting device which can prevent bending of the substrate member. The light emitting device includes a flexible substrate member, a plurality of light emitting elements, two first sealing members, and a second sealing member. The two first sealing members are disposed in-line on the substrate member and arranged in the longitudinal direction. The second sealing member is arranged extending in the longitudinal direction on the substrate member, and is offset in a lateral direction from the two first sealing members. The second sealing member is further arranged to extend across a first gap formed between the two first sealing members when viewed from a lateral direction, and overlap at least a portion of each of the two first sealing members. The second sealing member comprises a resin having transparency to light.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: August 25, 2015
    Assignee: NICHIA CORPORATION
    Inventor: Motokazu Yamada
  • Patent number: 9075178
    Abstract: An optical substrate having a structured light output surface that comprises rows of laterally arranged snaking, wavy or meandering longitudinal prism structures. The prism structures at the light output surface may be viewed as comprising rows of laterally meandering longitudinal prisms and/or sections of curved segments coupled end-to-end to form the overall meandering longitudinal prism structures. The laterally meandering rows of longitudinal prism structures are arranged in parallel laterally (side-by-side), defining parallel peaks and valleys (a facet is defined between each adjacent peak and valley). In one embodiment, the lateral waviness is regular with a constant or variable wavelength and/or wave amplitude (or extent of lateral deformation). The lateral waviness may generally follow a sinusoidal profile, or other curved profile.
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: July 7, 2015
    Assignee: UBright Optronics Corporation
    Inventors: Kong-Hua Wang, Kai-Jing Wang, Fang-Chun Yeh
  • Patent number: 9046630
    Abstract: An optical sheet includes a base film, a prism pattern formed in a first area of the base film, and a diffusion member formed in a second area of the base film. The prism pattern has a plurality of parallel prisms on a light-exiting surface. The diffusion member includes a plurality of scatter members in the base film to scatter light, or a plurality of irregularly arranged lenses on one or more of the light-incident surface and the light-exiting surface.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: June 2, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyun-Hwa Song, Kang-Woo Lee, Ki-Se Lee, Jin-Sung Choi, Sang-Woo Ha
  • Publication number: 20150138781
    Abstract: The present invention may relate to an optical sheet unit. According to an embodiment of the present invention, disclosed is an optical sheet unit comprising: a diffusion sheet for diffusing incident light such that the light can be uniformly emitted; a prism sheet unit arranged at the position facing the diffusion sheet to concentrate the light incident from the diffusion sheet; and a bonding layer formed between the prism sheet unit and the diffusion sheet to bond the entire surfaces of the prism sheet unit and the diffusion sheet facing each other.
    Type: Application
    Filed: May 8, 2013
    Publication date: May 21, 2015
    Inventors: Sung Sik Cho, Oh Hyun Kwon, Tae Jun Lee, Woo Jong Lee, Hee Jeong Kim, Jee Hong Min, Young Il Kim
  • Patent number: 9028101
    Abstract: A display light source includes a light source, a color wheel, an optical module, and an actuator. The light source provides a light beam. The color wheel includes a first path segment and a second path segment. Each of the first path segment and the second path segment includes a reflective segment and at least one filtering segment. When the light beam impinges on the filtering segment of the first path segment, the light beam passes through the filtering segment of the first path segment and is filtered to form a first primary-color light beam. When the light beam impinges on the reflective segment of the first path segment, the light beam is reflected to the optical module. The optical module guides the reflected light beam to the filtering segment of the second path segment, such that the reflected light beam is filtered to form a second primary-color light beam.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: May 12, 2015
    Assignee: Delta Electronics, Inc.
    Inventor: June-Jei Huang
  • Publication number: 20150124198
    Abstract: Embodiments of the invention disclose a light-condensing sheet, a backlight and a liquid crystal display. The light-condensing sheet comprises a supporter and a plurality of flat light-condensing films provided on the supporter, and refractive indexes of the plurality of light-condensing films gradually increase from bottom to top.
    Type: Application
    Filed: December 11, 2013
    Publication date: May 7, 2015
    Inventors: Haiwei Sun, Hyungkyu Kim
  • Patent number: 9022616
    Abstract: The disclosure relates to a lighting fixture having a base, a solid-state light source, and a lens assembly. The optic has a body with a cavity and a proximal opening. The lens assembly is coupled to the base at the proximal opening. The solid-state light source is mounted to the base and is configured to direct light into the cavity via the proximal opening. At least a portion of an interior surface of the body includes a number of elongated prisms. At least a portion of the exterior surface of the body includes a number of diffusers.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: May 5, 2015
    Assignee: Cree, Inc.
    Inventor: David N. Randolph
  • Patent number: 9004726
    Abstract: Light directing films employing at least two layers forming a continuous corrugated boundary between major surfaces of the film. Light received by a major surface of the film is internally redirected by interacting with the facets of the corrugated inter-layer boundary and is emitted from the opposing major surface towards a new propagation direction which is different from the original propagation direction by up to 90 degrees. Light directing films may have additional layers and/or layer boundaries which may provide additional bend angles to light rays or otherwise diffuse the emitted beam.
    Type: Grant
    Filed: October 26, 2012
    Date of Patent: April 14, 2015
    Assignee: SVV Technology Innovations, Inc.
    Inventor: Sergiy Victorovich Vasylyev
  • Patent number: 8986812
    Abstract: Presently described are optical films, such as a brightness enhancing film, having a polymerized microstructured surface disposed on a preformed polymeric film wherein the film has a thickness of no greater than 3 mils and the polymerized microstructured surface consists of the reaction product of a substantially non-brominated polymerizable resin composition.
    Type: Grant
    Filed: July 9, 2007
    Date of Patent: March 24, 2015
    Assignee: 3M Innovative Properties Company
    Inventors: Bryan V. Hunt, Judith M. Invie, Anthony M. Renstrom, David B. Olson
  • Patent number: 8979350
    Abstract: A light guide plate includes an incident surface, an emitting surface, and a reflecting surface opposite to the emitting surface. The incident surface connects the emitting surface to the reflecting surface. A plurality of microstructures is defined in the reflecting surface. Each microstructure is a slot. A cross-section across each microstructure and parallel to a light emitting direction is substantially V-shaped. Each microstructure is formed with two sidewalls. Each sidewall includes a plurality of stepped portions connected in order.
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: March 17, 2015
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Li-Ying Wang He
  • Patent number: 8979292
    Abstract: This display includes point light sources, a light guide plate including a light-receiving surface on which light emitted from the point light sources is directly incident, opposed to the point light sources, and a display cell provided on a surface of the light guide plate, while a plurality of projecting portions each having a width smaller than a width of each of the point light sources in an extensional direction of a side of the light guide plate provided with the light-receiving surface are provided on a region of the light-receiving surface of the light guide plate opposed to the point light sources, and the plurality of projecting portions of the light guide plate are formed to have irregularly different shapes.
    Type: Grant
    Filed: May 2, 2012
    Date of Patent: March 17, 2015
    Assignee: Funai Electric Co., Ltd.
    Inventor: Tomohisa Tajiri
  • Publication number: 20150070901
    Abstract: Implementations disclosed herein include optical sheets comprising one or more regions including one or more optical elements. Each of the one or more optical elements includes a plurality of microstructures. The one or more optical elements can be configured to tailor the radiation pattern output from a source of illumination. The one or more optical element can be further configured to impart a visual appearance to the optical sheet that is different from a standard lenticular or prismatic sheet. In various implementations, the one or more regions can be demarcated from each other or the surrounding by borders. The borders of the one or more regions can be configured to form one or more letters, one or more symbols or logos for identification and/or security purposes. Various implementations of the optical sheet can include nano-particles in addition to the optical elements to enhance the aesthetic quality of the optical film.
    Type: Application
    Filed: September 9, 2014
    Publication date: March 12, 2015
    Inventors: Christopher Chapman Rich, Phillip Christopher Harvey, Eric William Hearn Teather, Joel Mikael Petersen
  • Publication number: 20150070903
    Abstract: Provided are an optical member having adhesion and elastic restoring force, and a light source device and a display device including the same, the optical member including: a base film; an optical pattern layer provided on the base film and having adhesion; and an upper film partially adhering onto the optical pattern layer, in which at least a partial region of the optical pattern layer has a characteristic in which the partial region is deformed when external force is applied and restored when the external force is removed, and it is easy to assemble a product to improve productivity, and the elastic restoring force is excellent to suppress damage due to the external force.
    Type: Application
    Filed: April 4, 2013
    Publication date: March 12, 2015
    Inventors: Jee Hong Min, Sung Sik Cho, Oh Hyun Kwon, Tae Jun Lee, Woo Jong Lee
  • Publication number: 20140376220
    Abstract: A light transmissive structure includes a light transmissive substrate having first and second opposing faces and array of microprism elements on the first face, with a respective microprism element including a plurality of concentric microprisms. The light transmissive structure is configured to receive light from a light source facing the first face and distribute the light emerging from the second face in a 2D batwing distribution.
    Type: Application
    Filed: June 18, 2014
    Publication date: December 25, 2014
    Inventors: Bing Shen, Ken G. Purchase
  • Patent number: 8905613
    Abstract: A display device includes a backlight module, a display panel, a prism film, a light-splitting layer, and a grating layer. The light-splitting layer splits light into a first backlight group and a second backlight group, wherein the two groups are inclined in different directions relative to a light-emitting surface of the backlight module. The grating layer allows the first backlight group to pass while blocking the second backlight group. The prism film has a plurality of prisms disposed facing the display panel. Each prism has a first surface and a second surface, wherein the angle between the first surface and the normal line to the light-emitting surface is greater than the angle between the second surface and the normal line to the light-emitting surface.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: December 9, 2014
    Assignee: AU Optronics Corporation
    Inventors: Tzu-Ling Niu, Fu-Cheng Fan
  • Patent number: 8894263
    Abstract: A display apparatus includes a light source, a display panel and an optical plate between the light source and the display panel. The optical plate includes a supporting sheet, a first, a second and a third optical layer. The first optical layer is disposed on a bottom surface of the supporting sheet and has a plurality of first protruding portions on a bottom surface of the first optical layer and has a first refractive index. The second optical layer is disposed on the bottom surface of the first optical layer and covers the first protruding portions. The second optical layer has a second refractive index larger than the first refractive index. The third optical layer is disposed on a top surface of the supporting sheet and has a plurality of second protruding portions on a top surface and has a third refractive index smaller than the second refractive index.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: November 25, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong-Yeol Yeom, Yongkyu Kang, Seunghwan Chung
  • Patent number: 8894250
    Abstract: In an illuminating device, when exiting lights come out from a lens sheet, the optical paths of the exiting lights are deflected in a direction opposite to an optical axis of a light source by means of a plurality of prisms which are included in a first lens group arranged on an inward side of the lens sheet located adjacent to the optical axis of the light source and each of which has a inclined face facing toward the optical axis of the light source, wherein the exiting lights from the light source via the first lens group of the lens sheet are adapted to mix with exiting lights from the light source via a second lens group located outside the first lens group, whereby the degree of color unevenness is reduced, that appears inherently when a pseudo white LED is used as the light source of the illuminating device.
    Type: Grant
    Filed: February 27, 2012
    Date of Patent: November 25, 2014
    Assignee: Minebea Co., Ltd.
    Inventors: Masaki Asai, Koji Sakai, Ryohei Takayama
  • Patent number: 8890395
    Abstract: A beamshaping optical stack (108), a light source and a luminaire is provided. The beamshaping optical stack (108) is to be optically coupled to a light emitting surface of a light emitter. The beamshaping optical stack (108) comprises a first light transmitting layer (120) and a second light transmitting layer (118). The second light transmitting layer (118) comprises a first side (110) which is optically coupled to the first light transmitting layer (120) to receive light from the first light transmitting layer (120). The second light transmitting layer (118) further comprises a second side (106) which is substantially opposite the first side (110) to emit the received light into another optical medium. The second light transmitting layer (118) further comprises a geometrical structure (116) at the second side (106) to obtain a decreasing light emission with increasing light emission angles (9a) with respect to a normal (112) to the first side (110).
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: November 18, 2014
    Assignee: Koninklijke Philips N.V.
    Inventor: Ferry Zijp
  • Patent number: 8882324
    Abstract: A lighting device includes a light source 30, a light guide 20 provided adjacent to the light source 30 and including a light source light incident surface 21 on which light emitted by the light source 30 enters and a planar light emission surface 22 from which planar light is emitted, and an optical sheet 50 including a planar light incident surface 53 on which the planar light enters, and configured to change a traveling direction of the planar light because a light emission side of the optical sheet 50 has a shape in which plural columnar prisms 51 extending in parallel to the light source light incident surface 21 are arranged side by side. In each of the prisms 51, a distal surface has at least different two kinds of inclination angles.
    Type: Grant
    Filed: June 14, 2012
    Date of Patent: November 11, 2014
    Assignee: Japan Display Inc.
    Inventors: Masaya Adachi, Akiyoshi Tobe, Yasuhisa Shiraishi
  • Publication number: 20140327858
    Abstract: The present invention relates a prism sheet, and a back light unit and a liquid crystal display device therewith, in which total thickness of a back light unit is reduced while taking place of the lamp mura is prevented, for improving a picture quality. The prism sheet includes a plurality of first prism mountains formed on a supporting film at regular intervals, a resin layer filled between the first prism mountains, and a plurality of second prism mountains formed on the resin layer and the first prism mountains with at intervals greater than the intervals of the first prism mountains.
    Type: Application
    Filed: July 17, 2014
    Publication date: November 6, 2014
    Applicant: LG Display Co., Ltd.
    Inventor: Young-Hun JEONG
  • Patent number: 8864344
    Abstract: The present invention relates to a secondary optical lens for a light emitting diode (“LED”) light projector, comprising at least one lens unit, wherein the lens unit consists of a refraction portion in the centre and a total internal reflection portion on the outer ring; the central refraction portion has a convex surface on the bottom and is attached with a plurality of micro lenses; the bottom attached with a micro lens array; the total internal reflection portion on the outer ring of the lens unit comprises a cylindrical light incident surface with a slight draft angle, and a total internal reflection surface on the outer side, which adopts a diamondoid polyhedral flake design; and the top of the lens unit is a smooth plane surface used as the light emitting surface.
    Type: Grant
    Filed: June 14, 2012
    Date of Patent: October 21, 2014
    Assignee: Huizhou Light Engine Limited
    Inventors: Jin Bo Jiang, Tin Po Chu, Wa Hing Leung
  • Publication number: 20140301086
    Abstract: Provided are an optical sheet used for a lighting device, and the lighting device, the optical sheet comprising: a base plate; and an optical plate including a plurality of micro pattern units formed on the base plate, wherein the respective micro pattern units have any one shape of a quadrangular pyramid shape, a conical shape, and a polypyramid shape, wherein an edge angle formed between the base plate and a side surface of the micro pattern units is determined within a range of 15 degrees to 45 degrees.
    Type: Application
    Filed: October 31, 2012
    Publication date: October 9, 2014
    Applicant: LG INNOTEK CO., LTD.
    Inventors: Beom Sun Hong, Dong Hyun Lee, Dong Mug Seong, Jun Phill Eom
  • Patent number: 8851713
    Abstract: A lens member includes a central axis, a light-incident side including a Fresnel-lens surface provided with a plurality of annular prisms concentrically arranged with respect to the central axis, and a light-exit surface opposite to the light-incident side. The Fresnel-lens surface further includes an annular lens portion that is concentrically arranged with respect to the central axis and that is extended to be longer and wider than the plurality of annular prisms. Provided is an optical unit in which a light source and a lens member are combined, and parts are disposed in a space provided in an outer periphery of the annular lens portion.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: October 7, 2014
    Assignees: Citizen Electronics Co., Ltd., Citizen Holdings Co., Ltd.
    Inventors: Yasuaki Kayanuma, Junji Miyashita
  • Patent number: 8845176
    Abstract: An optical assembly includes a light emitting panel having a light output surface with non-uniform directional light output distribution, and a light redirecting film located to receive light emitted from the light output surface. The light redirecting film has a pattern of individual non-prismatic optical elements of well defined shape with a total of two surfaces that intersect each other, the shape varying at different locations on the light redirecting film to redistribute the light received from the light output surface within a desired light ray angle distribution.
    Type: Grant
    Filed: May 14, 2013
    Date of Patent: September 30, 2014
    Assignee: Rambus Delaware LLC
    Inventors: Jeffery R. Parker, Timothy A. McCollum, Robert M. Ezell
  • Patent number: 8829784
    Abstract: A surface light source device includes an organic electroluminescent element including a luminescent layer and a light-emitting surface structure layer disposed on one of the surfaces of the organic electroluminescent element. In the surface light source device, the light-emitting surface structure layer includes a concave-convex structure provided on a surface thereof on the side toward a device light-emitting surface, and the concave-convex structure includes a plurality of concave portions having oblique surfaces and flat portions disposed around the concave portions. The flat portions and/or the concave portions have a size difference in one or more of their width, height, depth, and spacing, the size difference being larger than the difference that causes interference of one or both of emitted light and reflected light.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: September 9, 2014
    Assignee: Zeon Corporation
    Inventors: Hiroyasu Inoue, Toshihiko Hori, Kenichi Harai
  • Patent number: 8797611
    Abstract: A lens receives light emitted from an illumination source along an orientation in which a center of the lens is aligned with a central axis of illumination that forms an acute angle of incidence relative to a to-be-imaged surface and the lens directs the light toward the to-be-imaged surface.
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: August 5, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Michael J. Steinle
  • Patent number: 8794799
    Abstract: An optical sheet having both of an excellent light condensing function and an excellent scratch resistance is provided. An optical sheet includes: a sheet-like main body; at least three or more first unit shaped elements arranged on one surface of the main body; and second unit shaped elements arranged on the one surface of the main body. Each of the second unit shaped elements extend in parallel with in one direction on a sheet surface of the main body. A height H1 of each of the first unit shaped elements from the one surface is higher than a height H2 of each of the second unit shaped elements. A rate of an area occupied by the first unit shaped elements on the one surface is not more than 10.0%, when observed along a normal direction nd relative to the one surface.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: August 5, 2014
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Akinobu Ushiyama, Akiko Tomita, Satoshi Goishihara, Hiroshi Kojima, Takayuki Shimada, Mitsuhiro Hamashima, Kazuo Matsufuji, Kazuki Tanaka
  • Publication number: 20140192534
    Abstract: A display device includes: a display panel; a resin layer on the display panel and having a first protrusion having a first style on a surface thereof; a first window on the resin layer and having a second protrusion having a second style on a surface thereof; and a second window on the first window.
    Type: Application
    Filed: December 27, 2013
    Publication date: July 10, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventor: Jong-Hwan Cho
  • Publication number: 20140169000
    Abstract: In a backlight module, a diffusive structure and a prism structure are replaced by a diffusive prism film formed on a substrate and transferred via In-Mold Decoration by Roller (IMR) to a light guide body via injection molding. A reflection film is also transferred to an opposite side of the light guide body via the same way. In such way, optical films may be readily transferred to the light guide body via two-side IMR during the process of injection molding of the light guide body, saving room taken by substrates of the optical components.
    Type: Application
    Filed: July 8, 2013
    Publication date: June 19, 2014
    Inventors: Ching-Fu Hsu, Jia-Chi You, Chien-Wei Chen
  • Publication number: 20140169001
    Abstract: A vehicle light assembly includes an array of light sources mounted in a generally planar base. An optical element includes a first surface having a first optical design and a second surface having second optical design. The second optical design includes a wedge having a first wedge wall and a second wedge wall that converges with the first wedge wall. The second wedge wall extends at an angle to the first wedge wall. A bezel surrounds the base and the optical element, and an outer lens is positioned adjacent the outside surface of the optical element. The optical element is between the base and the outer lens, and the outer lens has an inner surface including an optical design.
    Type: Application
    Filed: February 20, 2014
    Publication date: June 19, 2014
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventor: David A. Brown
  • Publication number: 20140160786
    Abstract: Various embodiments of the disclosure relate to an optical system that includes a base unit and one or more cartridges that are removably attachable to the base unit. The one or more cartridges can include optical components configured to output a beam of light (e.g., a laser). The base unit can be configured to combine multiple beams of light (e.g., emitted by multiple cartridges) and output a combined beam of light. The cartridges can be interchanged to modify the light output by the optical system. The optical system can include thermally one or more stable enclosures and/or a temperature controller. The optical system can include one or more alignment adjustment optical components configured to adjust the alignment of one or more light beams.
    Type: Application
    Filed: December 11, 2013
    Publication date: June 12, 2014
    Applicant: CVI LASER LLC
    Inventors: DAVID E. HARGIS, JOHN O'SHAUGHNESSY, MARK LIN, WILLIAM BUTTERFIELD
  • Patent number: 8727580
    Abstract: An illuminating device has a light source that includes a plurality of light emitting devices and a phosphor; and a lens sheet that stays on an optical axis of the light source, the lens sheet having a plurality of prisms that is symmetrically arranged with respect to the optical axis of the light source. The plurality of prisms is configured at least on a surface of the lens sheet in which to face the light source, and a plurality of light scattering elements is configured at least on a surface of the lens sheet in which not to face the light source.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: May 20, 2014
    Assignee: Minebea Co., Ltd.
    Inventors: Ryohei Takayama, Masaki Asai, Koji Sakai
  • Patent number: 8727541
    Abstract: A projector includes: a light emitter; a light modulator modulating light from the light emitter; and a projector projecting the image from the light modulator. The light emitter includes a light emitting element and an optical member. The light emitting element is a super luminescent diode having an active layer constituting first and second gain regions sandwiched between first and second cladding layers. The first gain region is tilted in a clockwise direction relative a perpendicular of a first surface of the stacked structure. The second gain region is tilted in a counterclockwise direction relative to a perpendicular of the first surface. As such, the optical member refracts the light respectively emitted from the end surfaces of the first and second gain regions on the second surface side to thereby emit light beams in the same direction.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: May 20, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Tsuyoshi Kaneko, Takashi Takeda