Panel Type Patents (Class 362/330)
  • Patent number: 10429018
    Abstract: A light fixture includes a housing and a light emitting element. The housing includes a lower edge and is configured to be recessed within a surface. The light emitting element is supported in the housing, and the light emitting element includes a planar surface spaced apart from the lower edge of the housing.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: October 1, 2019
    Assignee: Hubbell Incorporated
    Inventors: Martin Werr, Randy Lewis, Dhavalkumar Patel
  • Patent number: 10317027
    Abstract: Side light LED troffer tube. In an aspect, a side light LED tube is provided that includes a tube having at least one light receiving portion configured to receive light and gradient optics formed on the tube. The gradient optics providing a transparency gradient configured to distribute the light to achieve a selected emitted light intensity variation across a selected surface of the tube.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: June 11, 2019
    Assignee: BRIDGELUX INC.
    Inventor: Todd Farmer
  • Patent number: 10309594
    Abstract: A stack light with a light section having a housing with a plurality of at least partially translucent side walls and having a plurality of opposing light sources on longitudinally opposite ends of the housing to produce a very even blended light. A stack light system with one or more such light sections also includes a sound section having a hollow housing and a set of interchangeable acoustic chambers configured for insertion into the hollow housing, each chamber including a piezoelectric transducer and having a side wall structure configured to abut an inner side wall surface of the hollow housing, the chamber, transducer and housing together defining a resonant cavity.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: June 4, 2019
    Assignee: Mallory Sonalert Products, Inc.
    Inventors: Christopher M. Baldwin, Mark T. Monnett
  • Patent number: 10302276
    Abstract: Illumination devices with improved color mixing optics are disclosed herein for mixing the colors produced by a multi-colored LED emitter module to produce uniform color throughout the entire beam angle of the output light beam, along with smoother edges and improved center beam intensity. Embodiments disclosed herein include a unique arrangement of multi-color LEDs within an emitter module, a unique exit lens with different patterns of lenslets on opposing sides of the lens, and other associated optical features that thoroughly mix the different color components, and as such, provide uniform color across the output beam exiting the illumination device. Additional embodiments disclosed herein include a unique arrangement of photodetectors within the primary optics structure of the LED emitter module that ensure the optical feedback system properly measures the light produced by all similarly colored emission LEDs.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: May 28, 2019
    Assignee: Lutron Ketra, LLC
    Inventors: Fangxu Dong, Horace C. Ho, David J. Knapp
  • Patent number: 10215904
    Abstract: A backlight module and a display device are provided. The backlight module includes a light guide plate, a light source and a first prism film. The light guide plate includes a main body and plural oblique microstructures. The main body has a light-incident surface and at least one main surface connected to the light-incident surface. The main surface has a first area and a second area. The oblique microstructures are disposed in the first area. Each of the oblique microstructures has a first slope. A light source is disposed adjacent to the light-incident surface. The first prism film is disposed in front of the light guide plate. The first prism film has plural first prism microstructures. Each of the first prism microstructures has a second slope. One of the first slope and the second slope is a positive number, and the other one is a negative number.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: February 26, 2019
    Assignees: Radiant Opto-Electronics (Suzhou) Co., Ltd., Radiant Opto-Electronics Corporation
    Inventors: Chin-Ting Weng, Yue-Heng Lee, Chia-Yin Chang
  • Patent number: 10185176
    Abstract: A display device is disclosed. The display device includes a display panel, a frame behind the display panel, a light assembly positioned between the display panel and the frame and providing the display panel with light, and a substrate mounted with the light assembly and positioned in front of the frame. The frame includes a flat portion forming a flat surface and a trench forming a stepped portion together with the flat portion. The substrate is positioned on the trench.
    Type: Grant
    Filed: July 3, 2017
    Date of Patent: January 22, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Dongsoo Shin, Junho Ko, Yohan Choi
  • Patent number: 10180528
    Abstract: A backlight unit includes a light source for generating light and a light guide plate for guiding the light in an upward direction, a top surface of the light guide plate includes a plurality of first and second lens patterns which extend in a first direction, the first lens pattern and the second lens pattern are alternately arranged in a second direction crossing the first direction, and a width the first lens pattern in the second direction increases gradually from a first width to a second width greater than the first width and then decreases gradually from the second width to the first width repeatedly along the first direction.
    Type: Grant
    Filed: August 1, 2017
    Date of Patent: January 15, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kyung-Min Kim, Ho-sik Shin, Hayoung Lee
  • Patent number: 10139547
    Abstract: A composite optical film has the functions of brightness enhancement, self-diffusion and defect blocking. The film comprises: a structured substrate including a structured light incidence surface and a light emitting surface opposite the structured light incidence surface, wherein the structured light incidence surface includes longitudinal prism structures or longitudinal lens structures transversely arranged in rows; a support base plate adjacent to the light emitting surface of the structured substrate, the support base plate having a light incidence surface on one side and a light emitting surface on another side opposite the light incidence surface, wherein at least one of the light incidence surface and the light emitting surface has a plurality of buried particles, and at least one portions of the buried particles are protruded on the light emitting surface of the support base plate.
    Type: Grant
    Filed: November 17, 2016
    Date of Patent: November 27, 2018
    Assignee: UBright Optronics Corporation
    Inventors: Yi-Long Tyan, Chi-Chen Liu, Lung-Pin Hsin, Hui-Yong Chen
  • Patent number: 10119672
    Abstract: A fiber optic lighting module is disclosed that includes a set of fiber optic light panels wherein the optical fibers extending from a first fiber panel are interwoven with the optical fibers extending from a second fiber panel.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: November 6, 2018
    Assignee: VALEO NORTH AMERICA, INC.
    Inventor: Patton Davis Baker
  • Patent number: 10101519
    Abstract: A lighting assembly for a vehicle instrument panel includes a light guide supported within a light housing proximate to a light source. The light guide includes a top surface with a plurality of prisms for efficiently transmitting light toward a display and operator. The light guide may be coupled to a diffuser with a plurality of serrations that include a light reflecting surface for directing light from the light guide in a direction toward an operator.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: October 16, 2018
    Assignee: Continental Automotive Systems, Inc.
    Inventors: Vyacheslav Borisovich Birman, Richard Daniel Sanders
  • Patent number: 10036845
    Abstract: A curved display device includes a backlight unit which generates light and a display panel which receives the generated light from the backlight unit. The backlight unit includes a light guide plate and is curved. The display panel is disposed on the curved backlight unit and is curved. The curved light guide plate defines a light incident surface thereof and an opposite surface. The light incident surface receives the light generated by the curved backlight unit. The opposite surface faces the light incident surface. A thickness of the curved light guide plate decreases from the light incident surface to the opposite surface.
    Type: Grant
    Filed: February 18, 2016
    Date of Patent: July 31, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Juhwa Ha, Taeyong Ryu, Jaesuk Yoo, Sangwon Lee, Sijoon Song, Sangho Hwang
  • Patent number: 9964692
    Abstract: Aspects of this invention relate to a system that provides an illuminated feature for an LED luminaire that can be used with opposite linear runs of LEDs to light the edges or sides of a luminaire without requiring additional LEDs.
    Type: Grant
    Filed: October 6, 2015
    Date of Patent: May 8, 2018
    Assignee: Focal Point, LLC
    Inventors: Michael David SanFacon, Michael Scott Garner, Krutin S. Desai, Ken Czech
  • Patent number: 9951921
    Abstract: A vehicle taillight system being capable of representing various situations occurring upon driving a vehicle is provided. The vehicle taillight system includes: first and second taillights mounted at the rear of a vehicle; a plurality of light sources installed at each of the first and second taillights; and a controller connected to the first and second taillights and that controls the plurality of light sources to together or individually operate and that controls to output driving information of the vehicle to the outside of the vehicle through the first and second taillights. Therefore, because a driver's intention expression can be more clearly represented, various safety accidents can be beforehand prevented.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: April 24, 2018
    Inventor: Se-Ho Oh
  • Patent number: 9869452
    Abstract: An optical element for use in front of a light source for obtaining a skylight appearance, and a luminaire are provided. The optical element comprising a plurality of light transmitting cells in a raster structure, a diffuser and an edge wall. A light source emits light towards the raster structure. The raster structure collimates a part of the light and transmits a further part of the light in a predetermined spectral range. White light and colored light that is transmitted by the raster structure may impinge upon the side wall of the optical element. One face of the side wall is a region of specular reflectivity and will reflect the light that impinges upon it back into the chamber that is formed by the cooperation of the raster structure, the diffuser and the edge wall. Light exits the optical element through the diffuser.
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: January 16, 2018
    Assignee: PHILIPS LIGHTING HOLDING B.V.
    Inventors: Gabriel-Eugen Onac, Marcellinus Petrus Carolus Michael Krijn, Jochen Renaat Van Gheluwe
  • Patent number: 9539933
    Abstract: An automotive lamp is provided, including a circuit board, at least one carrier and at least one light-emitting element. The carrier is connected with the circuit board obliquely. Each carrier carries at least one said light-emitting element, and the at least one element is electrically connected with the circuit board.
    Type: Grant
    Filed: May 13, 2015
    Date of Patent: January 10, 2017
    Assignee: JUTE INDUSTRIAL CO., LTD.
    Inventor: Shih-Chieh Wei
  • Patent number: 9406851
    Abstract: Surface-textured encapsulations for use with light emitting diodes. In an aspect, a light emitting diode (LED) array apparatus includes a plurality of LEDs mounted to a substrate and an encapsulation covering the LEDs and having a surface texturing configured to extract light, wherein the surface texturing is includes at least one light extracting feature having a diameter larger than two or more of the LEDs.
    Type: Grant
    Filed: June 19, 2014
    Date of Patent: August 2, 2016
    Assignee: Bridgelux Incorporated
    Inventor: Tao Xu
  • Patent number: 9389355
    Abstract: An optical film includes a first structured major surface having a plurality of linear prisms extending along a same first direction and an opposing second structured major surface having a plurality of closely packed lenslets. The optical film exhibits a high optical uniformity and reduced sparkle.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: July 12, 2016
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventor: Gary T. Boyd
  • Patent number: 9383075
    Abstract: The invention provides a collimator comprising a first collimator face, a second collimator face, and a stack region. The stack region comprises a first layer having a first prismatically shaped top face with a plurality of 1D arranged first prisms having first prism axes, and a second layer having a second prismatically shaped top face with a plurality of 1D arranged second prisms having second prism axes. The first and second prism axes are in a crossed configuration. In a direction from the first collimator face to the second collimator face, the index of refraction of material upstream of the first prismatically shaped top face is larger than that of material downstream of the first prismatically shaped top face, and the index of refraction of material upstream of the second prismatically shaped top face is larger than that of material downstream of the second prismatically shaped top face.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: July 5, 2016
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Fetze Pijlman, Michel Cornelis Josephus Marie Vissenberg, Siebe Tjerk De Zwart, Jochen Renaat Van Gheluwe
  • Patent number: 9348174
    Abstract: Exemplary embodiments disclosed herein provide a rigid LCD assembly including a LCD having a perimeter, a first layer of tape around the perimeter of the LCD, and a diffusing plate attached to the later of tape so as to create a cavity defined by the space between the LCD, tape, and diffusing plate. One or more optical films may be inserted into the cavity, and while constricted in directions perpendicular to the films, the films may be free to move slightly in the directions parallel to the films. A U-shaped backlight wall may attach to the diffusing plate and would contain a backlight. An optional thermal plate can be attached to the backlight wall, which can be used with a second thermal plate to define a channel for accepting cooling air.
    Type: Grant
    Filed: February 27, 2014
    Date of Patent: May 24, 2016
    Assignee: Manufacturing Resources International, Inc.
    Inventors: William Dunn, Michael LeCave
  • Patent number: 9288357
    Abstract: A dual-slope light guide includes a first surface, a second surface and a curved surface. The first surface has first reflecting structures. The second surface, connected to the first surface, has second reflecting structures. An included angle between the first surface and the second surface is unequal to 180 degrees. The curved surface connects the first surface to the second surface. The first surface, the second surface and the curved surface extend from a first end of the light guide to a second end of the light guide. A light beam incident to the first end of the light guide is reflected and converted by the first reflecting structure and the second reflecting structure into linear light emitted from the curved surface. A light source module and an optical assembly for a scanner are also disclosed.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: March 15, 2016
    Assignee: Avision Inc.
    Inventors: Shin Gwo Shiue, Sung-Po Cheng
  • Patent number: 9182530
    Abstract: A light guide plate includes a body portion, first unit optical elements extending on the body portion in the light guide direction, and second unit optical elements disposed in between the first unit optical elements on the body portion. The width of each first unit optical element gradually decreases from that at the center to that at each end in the light guide direction. The ratio of the height to the width in each first unit optical element at the center is higher than the ratio of the height to the width in each second unit optical element.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: November 10, 2015
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Masahiro Goto, Hiroshi Sekiguchi, Hiroshi Yamamoto
  • Patent number: 9111655
    Abstract: Provided is a radiation generating apparatus, including: a radiation generating unit for emitting radiation; and a movable diaphragm unit including a light projecting/sighting system for making a simulation display of a radiation field with visible light. The light projecting/sighting system includes: a light source of the visible light; a light guiding plate that is provided across a radiation axis, and causes the visible light from the light source to exit from a front surface of the light guiding plate; and a louver that gives directivity to the visible light exiting from the front surface of the light guiding plate.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: August 18, 2015
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yasuo Ohashi, Yoichi Ikarashi, Yoichi Ando
  • Patent number: 9068730
    Abstract: In order to accurately illuminate a lighting target with planar light having few nonuniformities, a backlight (2) is provided with a light guide plate (5) having multiple leg members (531) protruding from an attachment part (53), which is the surface opposite of an emission part (52), and a chassis (4) having holding units (411) into which the leg members (531) are inserted.
    Type: Grant
    Filed: May 23, 2011
    Date of Patent: June 30, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Akira Gotou
  • Patent number: 9047792
    Abstract: A diffusion sheet includes a light incident surface and a light emitting surface opposite to the light incident surface. The light emitting surface includes a sub-wavelength grating to diffuse lights propagated in the diffusion sheet. The sub-wavelength grating is used to avoid a total internal reflection of some of the lights. A backlight module having the diffusion sheet is also provided.
    Type: Grant
    Filed: May 14, 2013
    Date of Patent: June 2, 2015
    Assignee: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: Po-Chou Chen
  • Publication number: 20150146451
    Abstract: An optical thin film includes: a transparent substrate including a first surface and a second surface which is opposite to the first surface; a first light-condensing layer formed on the first surface of the transparent substrate, the first light-condensing layer having a haze value ranging from 5% to 30% and a surface roughness ranging from 0.1 RMS to 1 RMS; and a second light-condensing layer formed on the second surface of the transparent substrate. The second light-condensing layer has a haze value ranging from 70% to 100% and a surface roughness ranging from 1 RMS to 10 RMS.
    Type: Application
    Filed: June 30, 2014
    Publication date: May 28, 2015
    Inventors: Kuang-Lin YUAN, Wen-Hao LIU, Shih-Ming CHEN
  • 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: 9006772
    Abstract: An organic light emitting diode (OLED) lighting apparatus includes a light emitting panel including an organic light emitting diode, a housing for housing the light emitting panel, a cover coupled to the housing and covering a front-side edge of the light emitting panel, a plurality of pins disposed between the housing and the light emitting panel and supporting an edge of the light emitting panel, and at least one contact bar disposed between the plurality of pins and a back-side edge of the light emitting panel.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: April 14, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae-Goo Lee, Doo-Hwan Kim, Min-Woo Lee, Sung-Jin Choi, Young-Mo Koo
  • Patent number: 8998445
    Abstract: A time sequence energy saving color splitting system includes at least one light source provided on a surface of the guide module and composed of multiple light illuminating elements capable of illuminating light beams with different wavelengths and arranged in array, the at least one light source being able to illuminate light beams with specific wavelengths in two time sequences and entering the guide module and a color splitting module provided on the guide module, comprised of a first surface and a second surface, wherein the first surface is a collar structure per unit cycle and the second surface is a non-spherical structure per unit cycle, the non-spherical structure per unit cycle corresponds to the collar structure every two unit cycles.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: April 7, 2015
    Assignee: Feng Chia University
    Inventor: Chi-Hung Lee
  • Patent number: 8985812
    Abstract: A rear illuminated panel includes a base member having first and second opposing sides and a pair of guide grooves formed on the first side of the base member. The panel further includes a translucent thermoplastic sheet of material having rubber channel strips on opposing longitudinal sides of the sheet of material. The sheet of material is disposed within the guide grooves of the base member such that channel strips prevent vibration of the sheet of material within the guide grooves. The panel still further includes an LED strip having a plurality of LEDs and disposed within a cavity formed by the base member and the sheet of material, wherein light from the LEDs illuminates the sheet of material. The second opposing side of the base panel is adapted to be fastened to a structure. Exemplary suitable structures include a locking rail and an index light.
    Type: Grant
    Filed: September 18, 2012
    Date of Patent: March 24, 2015
    Assignee: Tiffin Scenic Studios, Inc.
    Inventor: Brad E. Hossler
  • Patent number: 8974105
    Abstract: A planar ion-exchanged glass sheet for out-of-plane light beam coupling includes a first surface, a ion-exchanged first glass region adjacent and parallel to the first surface, a core glass region adjacent and parallel to the first glass region, a ion-exchanged second glass region adjacent and parallel to the core glass region, and a second surface adjacent and parallel to the second glass region. One edge of the glass sheet has an angled end face that is inclined to the plane extends across a thickness of at least one of the glass regions. Methods of making the planar ion-exchanged glass sheet, coupling an out-of-plane light beam into a plane using the planar ion-exchanged glass sheet, and scattering the coupled light to illuminate at least select regions of an exposed surface of the glass sheet are also disclosed.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: March 10, 2015
    Assignee: Corning Incorporated
    Inventors: Vitor Marino Schneider, Alana Marie Whittier
  • Publication number: 20150062913
    Abstract: A lens apparatus is disclosed that can include at least one piece of optical film comprising two or more major edges, a front light-emitting side, a back light-receiving side and four corner regions, each having one or more associated minor edges defining one or more corner cuts that define a corner cutout. The lens apparatus may also include an edge truss configured on the two or more major edges, wherein each edge truss may be disposed towards the back light-receiving side of the at least one piece of optical film. Each edge truss may include one or more sides configured from a corresponding fold in the at least one piece of optical film, wherein at least one of the one or more sides of each edge truss may be configured to impart support to the lens apparatus and to resist deflection of each edge truss.
    Type: Application
    Filed: November 6, 2014
    Publication date: March 5, 2015
    Applicant: Southpac Trust International Inc, Trustee of the LDH Trust
    Inventor: Leslie David Howe
  • Patent number: 8905594
    Abstract: According to one implementation of the disclosed technology, a lens is provided. The lens includes one or more pieces of optical film configured for attaching to and modifying light from a light emitting device. The one or more pieces of optical film define: a lens aperture; a front light-emitting side of the lens; a back light-receiving side of the lens; and two or more edge trusses. The edge trusses are disposed towards the back light-receiving side of the lens. Each of the two or more edge trusses include one or more sides configured from a corresponding fold in the one or more optical films, wherein at least one of the one or more sides of each of the two or more edge trusses is configured at an angle relative to the lens aperture plane to impart support to the lens and to resist deflection of each edge truss.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: December 9, 2014
    Assignee: Southpac Trust International, Inc, Trustee of the LDH Trust
    Inventor: Leslie David Howe
  • 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: 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: 8888333
    Abstract: Light redirecting film is disclosed. The light redirecting film includes a first major surface that includes a plurality of first microstructures that extend along a first direction. The light redirecting film also includes a second major surface that is opposite to the first major surface and includes a plurality of second microstructures. The second major surface has an optical haze that is in a range from about 4% to about 20% and an optical clarity that is in a range from about 20% to about 60%. The light redirecting film has an average effective transmission that is not less than about 1.55.
    Type: Grant
    Filed: August 11, 2010
    Date of Patent: November 18, 2014
    Assignee: 3M Innovative Properties Company
    Inventors: Robert A. Yapel, Mitchell A. F. Johnson, Tri D. Pham, Joseph T. Aronson, Steven D. Solomonson, Scott R. Kaytor, Steven J. McMan, Fei Lu, Steven H. Kong, Slah Jendoubi, Gary T. Boyd
  • Patent number: 8884786
    Abstract: The invention relates to a light sign (10) for displaying an instruction and/or guidance for ground airplane traffic at an airport, comprising a casing (20) with a transparent display panel (21) for representing an instruction and/or guidance symbol (Z), and a light source arranged inside the casing (20) with at least one luminescent diode (32) for illuminating the display panel (21). A diffusion panel (22) is made for scattering and/or back-scattering incident light, wherein the light source is arranged between the display panel and the diffusion panel. The at least one luminescent diode (32) is aligned on the diffusion panel (22) so that the display panel (21) is not illuminated directly, but indirectly by back-scattering of the light emitted from the at least one luminescent diode by the diffusion panel (22).
    Type: Grant
    Filed: April 30, 2010
    Date of Patent: November 11, 2014
    Assignee: ADB BVBA
    Inventors: Martijn Beukema, Pierre Tremouroux
  • Patent number: 8882307
    Abstract: A light emitting device that can reduce the illuminance unevenness on an illuminated surface. First light flux controlling member 103 controls the distribution of light emitted from light emitting element 102. Second light flux controlling member 105 has second incidence surface 201 onto which the light emitted from first light flux controlling member 103 is incident and second emission surface 202 that is located on a side opposite to second incidence surface 201 and emits the light incident from second incidence surface 201. Also, at least one surface of second incidence surface 201 and second emission surface 202 refracts the light having an optical path on a virtual cross-section including optical axis P1 of light emitting element 102 and being incident onto second incidence surface 201 or second emission surface 202 more to the optical axis P1 side than when being incident onto a plane perpendicular to optical axis P1.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: November 11, 2014
    Assignee: Enplas Corporation
    Inventor: Hiroshi Takatori
  • Patent number: 8882325
    Abstract: An optical sheet includes a light-passing base sheet, a plurality of light-passing first patterns formed on a front major surface of the base sheet, and a plurality of light-passing second patterns formed on a rear major surface of the base sheet. The first patterns protrude from the front surface of the base sheet, a top portion of each of the second patterns makes contact with the rear surface of the second patterns while a larger lower surface of each of the second patterns is exposed to serve as a light receiving surface. Voids having relatively low refractive indices are formed between the light-passing second patterns. The optical sheet employs just one base sheet in one embodiment, thereby reducing a manufacturing cost of the optical sheet.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: November 11, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seung-Mo Kim, Jinsung Choi, DongHoon Kim, Seunghwan Chung
  • Publication number: 20140320783
    Abstract: A condensing sheet, a backlight unit and a liquid crystal display device using the same are disclosed. The condensing sheet includes a base film, and a plurality of ,condensation patterns formed on the base film, wherein a first area and a second area are alternately defined on an upper surface of the base film, at least two condensation patterns are arranged in the first area, and a flat surface is formed in the second area, and wherein a width of each of the condensation patterns may be greater than a width of the flat surface.
    Type: Application
    Filed: December 19, 2013
    Publication date: October 30, 2014
    Applicant: LG Display Co., Ltd.
    Inventor: Young-Bae HAN
  • Patent number: 8870400
    Abstract: An object of the present invention is to configure a lighting device to discriminate the front and back sides of a substrate at low costs. In the lighting device of the present invention, a diffuser plate 30 as an optical member 15 includes: a light-transmissive substrate 32; an optical pattern 33 formed on the substrate 32 and applying an optical action to light; and a discrimination pattern 34 configured to discriminate between a first position (normal position) of the substrate 32 and a second position (non-normal position) of the substrate 32 reversed from the first position, formed on a first plane 30a that is a surface of the substrate 32 on which the optical pattern 33 is formed, and made of the same material as that of the optical pattern 33.
    Type: Grant
    Filed: October 21, 2010
    Date of Patent: October 28, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Yasumori Kuromizu
  • Publication number: 20140293618
    Abstract: The present invention solves glare of an embossed matte film of a conventional product produced and sold by the applicant of the present application, and provides a light diffusion film and the like having a surface shape of an irregular pattern that significantly suppresses the glare even when an LED light source is used and also maintains the good optical characteristics. The following is believed sufficient for maintaining good optical characteristics of an embossed matte film and also for solving the glare. To maintain the optical characteristics, the surface shape was defined by use of an inclination angle histogram profile of an embossed surface. In order to solve the glare, the size of unit patterns which make up an entire pattern and do not cause glare was defined by use of the value of the average length RSm of the roughness curve element of the embossed surface.
    Type: Application
    Filed: October 23, 2012
    Publication date: October 2, 2014
    Applicants: MGC FILSHEET CO., LTD., MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Koshi Koide, Kishin Ozawa, Yasutaka Fukunaga
  • 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
  • Publication number: 20140286044
    Abstract: Dual-sided optical films have extended split spreading structures formed on one major surface, and extended prisms formed on an opposite major surface. One portion of each split spreading structure has a low light spreading characteristic, and another portion has a high light spreading characteristic. For each split spreading structure, the low light spreading portion may be disposed alongside the high light spreading portion. The split spreading structures may be arranged in a one-to-one correspondence with the prisms. Light that enters a given prism from one inclined surface thereof can be associated primarily with light transmitted through the low light spreading portion of the split spreading structure, and light that enters the given prism from the other inclined surface thereof can be associated primarily with light transmitted through the high light spreading portion.
    Type: Application
    Filed: March 25, 2013
    Publication date: September 25, 2014
    Inventors: Nicholas A. Johnson, Michael J. Sykora, Michael E. Lauters, John A. Wheatley
  • Patent number: 8840274
    Abstract: An electronics package includes an electronic component having a light emitting diode (LED) and a protective case encapsulating the electronic component. An optical system is arranged between the electronic component and the protective case. The optical system is maneuvered to one of multiple positions via an actuator that is coupled to the optical system, where the actuator is accessible external to the protective case by the user of the electronics package. A first position of the optical system allows the light generated by the LED to be collected and/or controlled by the optical system. A second position of the optical system allows the light generated by the LED to be unaffected by the optical system. A third position of the optical system allows at least a portion of the light generated by the LED to be collected and/or controlled by the optical system and the remaining portion to be unaffected.
    Type: Grant
    Filed: January 13, 2014
    Date of Patent: September 23, 2014
    Assignee: JST Performance, Inc.
    Inventors: Stephen P. Adams, Taylor W. Anderson
  • Patent number: 8833955
    Abstract: A backlight module has a light guide plate, a back plate and light emitting assemblies. The light guide plate is substantially prism-like. The back plate has a shape corresponding to that of the light guide plate, and has an inclined first side plate and an inclined second side plate opposite to the first side plate. Each of the first and second side plates has at least one receiving recess, and the light emitting assemblies are received in the receiving recesses. In comparison with a side-light type backlight module, the present invention saves a heat-dissipation aluminum extrusion member. In comparison with a direct-light type backlight module, the present invention shortens the light mixing distance in a vertical direction, so as to reduce the module thickness.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: September 16, 2014
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Lindong Fang, Yicheng Kuo
  • Patent number: 8827501
    Abstract: A light emitting device that can reduce the illuminance unevenness on an illuminated surface. First light flux controlling member 103 controls the distribution of light emitted from light emitting element 102. Second light flux controlling member 105 has second incidence surface 201 onto which the light emitted from first light flux controlling member 103 is incident and second emission surface 202 that is located on a side opposite to second incidence surface 201 and emits the light incident from second incidence surface 201. Also, at least one surface of second incidence surface 201 and second emission surface 202 refracts the light having an optical path on a virtual cross-section including optical axis P1 of light emitting element 102 and being incident onto second incidence surface 201 or second emission surface 202 more to the optical axis P1 side than when being incident onto a plane perpendicular to optical axis P1.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: September 9, 2014
    Assignee: Enplas Corporation
    Inventor: Hiroshi Takatori
  • Patent number: 8827502
    Abstract: The present embodiment relates to a metamaterial for deflecting electromagnetic wave, includes a functional layer made up by at least one metamaterial sheet layer, each of the metamaterial sheet layers including a substrate and a number of artificial microstructures attached onto the substrate. The functional layer is divided into several strip-like regions. The refractive indices in all the strip-like regions continually increase along the same direction and there are at least two adjacent first and second regions, wherein, the refractive indices in the first region continually increase from n1 to n2, the refractive indices in the second region continually increase from n3 to n4, and n2>n3. The metamaterial of the present invention that deflects electromagnetic wave has a number of regions disposed thereon. In each region, the refractive indices can continuously increase or decrease so that the electromagnetic waves within the regions will be slowly deflected.
    Type: Grant
    Filed: November 29, 2011
    Date of Patent: September 9, 2014
    Assignees: Kuang-Chi Innovative Technology Ltd., Kuang-Chi Institute of Advanced Technology
    Inventors: Ruopeng Liu, Chunlin Ji, Lin Luan, Jinjin Wang
  • Patent number: 8814391
    Abstract: A light guiding structure includes a light transmissive body and microstructures; the light transmissive body includes an upper conical groove and a lower accommodating groove, and the upper conical groove has a curved surface with a continually varied slope; the microstructures are disposed on the light transmissive body. A lighting device includes a circuit board, a light source and the aforesaid light guiding structure; the light source and the light guiding structure are disposed on the circuit board, and the light source is accommodated within the lower accommodating groove.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: August 26, 2014
    Assignee: Luxingtek, Ltd.
    Inventors: Zhi-Wei Koh, Chi-Jen Kao, Wen-Chiun Ing, Wei-Hsin Hou
  • Patent number: 8794780
    Abstract: A backlight device 12 includes cold cathode tubes 17, a chassis that houses the cold cathode tubes 17 therein and having an opening 14b through which light emitted from the cold cathode tubes exits, and a diffuser plate 15 provided so as to face the cold cathode tubes 17 and cover the opening 14b. A light reflecting portion 30 is formed on a side of the diffuser plate 15 close to the cold cathode tubes 17 so as to have different light reflectance in every surface area of a surface of the diffuser plate 15. A scattering structure 31 is formed on a side of the diffuser plate 15 opposite from the cold cathode tubes 17 and scatters the light.
    Type: Grant
    Filed: October 9, 2009
    Date of Patent: August 5, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Kaori Ikuta
  • Patent number: 8789998
    Abstract: A planar ion-exchanged glass sheet for out-of-plane light beam coupling includes a first surface, a ion-exchanged first glass region adjacent and parallel to the first surface, a core glass region adjacent and parallel to the first glass region, a ion-exchanged second glass region adjacent and parallel to the core glass region, and a second surface adjacent and parallel to the second glass region. One edge of the glass sheet has an angled end face that is inclined to the plane extends across a thickness of at least one of the glass regions. Methods of making the planar ion-exchanged glass sheet, coupling an out-of-plane light beam into a plane using the planar ion-exchanged glass sheet, and scattering the coupled light to illuminate at least select regions of an exposed surface of the glass sheet are also disclosed.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: July 29, 2014
    Assignee: Corning Incorporated
    Inventors: Vitor M. Schneider, Alana M. Whittier