With Plural Elements On Both Sides Of Main Surface Patents (Class 362/333)
  • Patent number: 10718482
    Abstract: A vehicular lamp includes: a plate-like lens body including a front surface and a rear surface; and a light source provided at the rear of the lens body and emitting light rays of uniform luminance which are irradiated forward through the lens body to form a predetermined light distribution pattern. The front surface includes front lens cuts; the rear surface includes rear lens cuts facing the front lens cuts, respectively; the rear lens cuts are provided in respective inclined postures so that the output directions of light rays having entered the lens body while being refracted by the respective rear lens cuts and having been outputted through the respective front lens cuts are the same as one another; and distances between the rear lens cuts and the front lens cuts are adjusted so that the luminances of light rays outputted through the respective front lens cuts are made uniform.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: July 21, 2020
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventor: Koji Sato
  • Patent number: 10412806
    Abstract: Various embodiments include a multi-color micro-LED array light source that enables well-overlapped light beams of different colors. The multi-color micro-LED array light source includes a thermally conductive substrate and multiple arrays of different color micro-LEDs integrated on the thermally conductive substrate. The micro-LEDs within each array are electrically connected so that they can all be driven in unison. The multi-color array light source also includes a controller that is electrically coupled to and that drives the arrays of micro-LEDs. The controller drives the micro-LEDs in a manner that produces an output light distribution with a spatial wavelength and angular distribution that is suitable for use as a light source.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: September 10, 2019
    Assignee: HONG KONG BEIDA JADE BIRD DISPLAY LIMITED
    Inventors: Wing Cheung Chong, Yijing Chen, Lei Zhang, Fang Ou, Qiming Li
  • Patent number: 10393937
    Abstract: The present disclosure relates to a backlight unit and a display device including the backlight unit. The backlight unit includes a first pattern in a first region of a light guide plate including a light incidence surface and a second pattern in a second region of the light guide plate extending from the first region, so that, in the first region, a directional angle of light can be improved so as to prevent the occurrence of hot spots, and in the second region, a line light source can be converted into a plane light source.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: August 27, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: JaeJin Kim, MinSoo Park
  • Patent number: 10338299
    Abstract: A lighting system comprising an array of LEDs, collimators for collimating the light output from the LEDs and a lightguide mounted over the array of collimators. The lightguide comprises an elongate structure having a length direction with one light input end mounted over the collimators, wherein the general shape in cross section perpendicular to the length direction comprises a non-circular arc. The array of LEDs is mounted following a corresponding non-circular arc. Light extraction features are provided for out-coupling light from an outer arcuate surface of the lightguide. The non-circular arc formed by the outer surface of lightguide enables a non-uniform light output distribution to be formed. The shape of the surface can thus be used to control the directional light output.
    Type: Grant
    Filed: March 23, 2016
    Date of Patent: July 2, 2019
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Fernando Munoz Fernandez, Johannes Maria Thijssen
  • Patent number: 10267489
    Abstract: Provided is a light-emitting apparatus including a substrate, an LED light source disposed on the substrate, and a reflecting frame disposed laterally of the LED light source on the substrate, wherein the LED light source includes a side-emitting LED device which is disposed on the substrate, and which emits light laterally toward the reflecting frame, and a top-emitting LED device which is disposed above the side-emitting LED device on the substrate so as to straddle the side-emitting LED device and so as to not block a portion of the light emitted from the side-emitting LED device, and which emits light upward, the light being different in color than the light emitted from the side-emitting LED device, and wherein the reflecting frame is disposed so that the light emitted from the side-emitting LED device is reflected upward.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: April 23, 2019
    Assignees: CITIZEN ELECTRONICS CO., LTD., CITIZEN WATCH CO., LTD.
    Inventors: Yuji Omori, Makoto Yasuhara, Koki Hirasawa
  • Patent number: 10260711
    Abstract: Light control films, and lighting devices including the same, are disclosed. The light control films include a single layer of light transmitting material having a first side and a second side. A plurality of first microstructures are formed in the first side. The first microstructures are configured to receive incident light from a light source and produce an off axis (e.g. batwing) light distribution in a field downstream of the second side of the light control film. In some embodiments, a plurality of second microstructures is formed on the second side of the light control films and are configured to reduce the glare produced by light emitted from the light source passing through the film.
    Type: Grant
    Filed: June 1, 2015
    Date of Patent: April 16, 2019
    Assignee: OSRAM SYLVANIA Inc.
    Inventors: Zhuo Wang, Bruce Radl
  • Patent number: 10024510
    Abstract: A light emitting diode lighting assembly for mounting to a curved mounting surface, such as a vehicle surface, includes a plurality of light emitting diodes, a circuit board, and a molded polymer section for surrounding and insulating the LEDs against the circuit board. The lighting assembly also includes a lens and a flexible molded housing surrounding a perimeter of the lens and the circuit board for sealing the lens to the circuit board.
    Type: Grant
    Filed: October 26, 2010
    Date of Patent: July 17, 2018
    Inventors: Steven G. Hammond, Craig W. Hefright
  • Patent number: 9671099
    Abstract: There are provided a light emitting device package and a method for manufacturing the same. The light emitting device includes: a plurality of barriers provided above a metal circuit board; a plurality of light emitting devices placed in a space between the barriers; and a lens unit provided at an upper side of the barrier. Accordingly, the plurality of light emitting devices can be conveniently seated as a module format, and a luminance can be increased. Also, an efficiency of heat sink can be increase.
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: June 6, 2017
    Assignee: LG INNOTEK CO., LTD.
    Inventor: Jun Seok Park
  • Patent number: 9657918
    Abstract: A lighting fixture includes a front end-portion having an edge defining a light opening and a back end-portion spaced from the opening which has a centerline. At least one LED emitter on the mounting board disposed at the back end-portion for directing light toward the opening, the emitter(s) being off-centerline in a first lateral direction. A lens for the emitter(s), the lens being configured for distribution of light from the emitter(s) primarily in a second lateral direction which is opposite the first lateral direction such that the light passes through the light opening at a portion of the edge that is off-centerline in the second lateral direction, thereby to widen the illumination angle from the fixture.
    Type: Grant
    Filed: March 4, 2013
    Date of Patent: May 23, 2017
    Assignee: Cree, Inc.
    Inventors: Kurt S. Wilcox, Mario Alberto Castillo
  • Patent number: 9435936
    Abstract: A light guide plate with multi-directional structures includes a main body, a plurality of first microstructures and a plurality of second microstructures. The main body includes a light-incident surface, a light-emitting surface and a reflecting surface. The light-incident surface connects the light-emitting surface and the reflecting surface. The first microstructures are disposed on the light-emitting surface or the reflecting surface and arranged along a first extending direction. The second microstructures are disposed on the light-emitting surface or the reflecting surface and arranged along a second extending direction. The second microstructures and the first microstructures are disposed on the same plane and intersect with each other. Each of the second microstructures is a single stripe pattern, and has a width which becomes gradually smaller from one end of the second microstructure near the light-incident surface to the other end of the second microstructure away from the light-incident surface.
    Type: Grant
    Filed: December 9, 2013
    Date of Patent: September 6, 2016
    Assignee: Radiant Opto-Electronics Corporation
    Inventors: Chia-Yin Chang, Po-Chang Huang, Chih-Chiang Chang, Shan-Fu Chang, Shin-Bo Lin
  • Patent number: 9405861
    Abstract: This invention relates to a method of designing an illumination device, wherein a light source unit is modeled with a set of rays. Therein, each ray is assigned a light power and is further characterized by a light volume, which specifies how “spread out” the light is in area and angle. In this way, a selection of rays with respect to their “density” becomes possible, and an optical system can be optimized for a transmission of those rays providing the most light per volume.
    Type: Grant
    Filed: August 24, 2010
    Date of Patent: August 2, 2016
    Assignee: OSRAM GmbH
    Inventor: Julius Muschaweck
  • Patent number: 9212803
    Abstract: A lighting assembly includes a number of LEDs and an optical element proximate each one of the LEDs. The optical elements are configured to direct light from that LED toward an area, such that the light intensity from each optical element is substantially uniform across all of the area. Each optical element includes a first element, a second element, and a third element that extends beyond the first and the second elements.
    Type: Grant
    Filed: May 7, 2015
    Date of Patent: December 15, 2015
    Assignee: Ultravision Technologies, LLC
    Inventor: David S. Auyeung
  • Patent number: 9157602
    Abstract: An optical element for a light source and a lighting system using the optical element are disclosed. In example embodiments, the optical element includes an entry surface and an exit surface opposite the entry surface. The entry surface includes at least three subsurfaces, wherein each subsurface is disposed to receive light rays leaving light source. Each of the three subsurfaces is geometrically shaped and positioned to receive light rays entering the optical element through that subsurface in order to direct the light passing through the optical element. In some embodiments the optical element includes a concentrator lens disposed in the exit surface. The optical element can also include a mixing treatment. A lighting system can include multiple optical elements, each paired with a light source such as an LED or LED package.
    Type: Grant
    Filed: May 10, 2010
    Date of Patent: October 13, 2015
    Assignee: Cree, Inc.
    Inventor: Paul Kenneth Pickard
  • 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: 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
  • Publication number: 20140286043
    Abstract: Dual-sided optical films have extended prisms formed in one major surface, and extended lenslets formed in an opposite major surface. Some or all of the prisms are compound prisms, in which the two inclined surfaces of each compound prism each include a tip portion, a base portion, and an intermediate portion disposed between the tip portion and the base portion, the intermediate and tip portions forming a concave shape and the intermediate and base portions forming a convex shape, or vice versa. When obliquely incident light, e.g. from a light guide, is incident on the prism side of the film, an output beam emerges from the lenslet side of the film. The output beam has an intensity distribution with a sharp left beam edge and a sharp right beam edge, these beam edges having 10%-to-90% transition angles of no more than 7, 6, 5, 4, 3, or 2 degrees.
    Type: Application
    Filed: March 25, 2013
    Publication date: September 25, 2014
    Applicant: 3M Innovative Properties Company
    Inventors: Michael J. Sykora, John A. Wheatley
  • Patent number: 8836896
    Abstract: The present disclosure relates to an optical sheet for controlling the direction of light rays which is used for manufacturing backlight units of TFT-LCDs for computer monitors and televisions, and more specifically to an optical sheet which can uniformly diffuse light, improve brightness, and adjust viewing angle. There is provided an optical sheet for controlling the direction of light rays comprising a substrate film; a microlens group arranged on a first face of the substrate film; and a plurality of protuberances formed on a second face of the substrate film, wherein each protuberance comprises a reflective layer at the bottom thereof, and the plurality of protuberances comprise an aperture formed therebetween, and wherein a unit microlens of the microlens group has a first side and a second side with different radii of curvature from each other with respect to a light emission control part thereof.
    Type: Grant
    Filed: September 10, 2009
    Date of Patent: September 16, 2014
    Assignee: Toray Advanced Materials Korea Inc.
    Inventors: Jun-Sang Park, Jeong-Tae Seo, Hee-Cheong Lee, Sang-Hoon Lee, Tae-Yong Ryu
  • Patent number: 8810803
    Abstract: A fragmented lens system for creating an invisible light pattern useful to computer vision systems is disclosed. Random or semi-random dot patterns generated by the present system allow a computer to uniquely identify each patch of a pattern projected by a corresponding illuminator or light source. The computer may determine the position and distance of an object by identifying the illumination pattern on the object.
    Type: Grant
    Filed: April 16, 2012
    Date of Patent: August 19, 2014
    Assignee: Intellectual Ventures Holding 67 LLC
    Inventor: Matthew Bell
  • 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: 8757849
    Abstract: An optical component comprises a carrier plate (1) having a first main surface (2) and a second main surface (3) facing away from the first main surface (2), and a first lens structure (4) on the first main surface (2), wherein the first lens structure (4) has at least a first lens element (41) having a first polygonal form and a second lens element (42) having a second polygonal form, the first lens structure (4) completely covers the first main surface (2), and the first lens element (41) and the second lens element (42) are non-congruent with respect to one another and/or differ in terms of their orientation on the first main surface (2) of the carrier plate (1).
    Type: Grant
    Filed: November 19, 2008
    Date of Patent: June 24, 2014
    Assignees: OSRAM Gesellschaft mit beschrankter Haftung, OSRAM Opto Semiconductors GmbH
    Inventors: Peter Brick, Julius Muschaweck, Simon Schwalenberg
  • 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: 8721088
    Abstract: A lens array module includes a light incident surface, a light emitting surface opposite to the light incident surface, and a plurality of first and second lens surfaces. The first lens surfaces are arranged on the light incident surface to form into an array. The second lens surfaces are arranged on the light emitting surface to form into an array. The center of curvature of each of the first lens surfaces located at two opposite sides of a first reference point on the light incident surface deviates away from the first reference point in a direction parallel to a first reference axis, and the center of curvature of each of the second lens surfaces located at two opposite sides of a second reference point on the light emitting surface deviates toward the second reference point in a direction parallel to the first reference axis. A projection apparatus is also provided.
    Type: Grant
    Filed: May 29, 2011
    Date of Patent: May 13, 2014
    Assignee: Young Optics Inc.
    Inventors: Yi-Hao Kang, Jiunn-Lih Lin, Chia-Chang Lee, Chi-Tang Hsieh
  • Patent number: 8696156
    Abstract: A LED light bulb (10, 110, 210) having at least one LED (30a-d, 230). Light output from the LED is directed toward an offset scattering optics structure (50, 150, 250) that intersects and scatters the light output. The LED may optionally be paired with a narrow beam optical piece (32a-d, 132a-d, 232) to focus and direct the light output of the LED toward the scattering optics structure. A mounting structure (40, 140, 240a, 240b) may support the scattering optics structure and offset the scattering optics structure from the LED.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: April 15, 2014
    Assignee: Koninklijke Philips N.V.
    Inventors: Chuan Yuan, Yun Li, Mo Shen, Zhigang Pei, Ye Liu
  • Patent number: 8684577
    Abstract: A cavity illumination system according to the present disclosure may include one or more illumination elements composed of a transparent or semi-transparent, biocompatible sterilizable polymer and one or more illumination sources. The sterilizable polymer operates as a waveguide. An illumination element may incorporate micro structured optical components such as for example gratings, prisms and or diffusers to operate as precision optics for customized delivery of the light energy. The micro structured optical components may also be used to polarize and/or filter the light energy entering or exiting the illumination element.
    Type: Grant
    Filed: May 12, 2006
    Date of Patent: April 1, 2014
    Assignee: Invuity, Inc.
    Inventor: Alex Vayser
  • Patent number: 8678628
    Abstract: A vehicle light using a projection lens of a novel appearance can provide a feeling of solidness as compared to a simple spherical shape. The vehicle light can include a projection lens having an optical axis and a plurality of separate lens portions divided in a radial pattern with respect to the optical axis of the projection lens. The separate lens portions can have respective light exiting surfaces of different curvatures, and respective light incident surfaces, the shapes of which are determined such that the separate lens portions have the same thickness and the same focal point.
    Type: Grant
    Filed: January 24, 2012
    Date of Patent: March 25, 2014
    Assignee: Stanley Electric Co., Ltd.
    Inventor: Takashi Futami
  • Patent number: 8672497
    Abstract: A phosphor plate may be provided that includes a base plate transmitting light; and a lens being disposed on at least one of both surfaces of the base plate and including a fluorescent material.
    Type: Grant
    Filed: November 25, 2011
    Date of Patent: March 18, 2014
    Assignee: LG Innotek Co., Ltd.
    Inventors: Jong Chan Park, Young Jin Kim
  • Patent number: 8669571
    Abstract: A light distribution controller of a light-emitting device includes a first optical member formed of ZnO disposed over an LED interposing a transparent adhesive, and a second optical member which covers the first optical member. The first optical member includes a first concave portion having an opening in a regular hexagon shape whose area gradually increases. In the first concave portion, inner wall surfaces having inclined surfaces, each of whose bases is formed by one side of the hexagon of the opening shape, are formed. Outside of the first optical member, outer wall surfaces each having a trapezoidal shape are formed. The second optical member includes a second concave portion arranged so that light at an annular peak in the light distribution characteristic of the light traveled through the first optical member is totally reflected.
    Type: Grant
    Filed: July 4, 2011
    Date of Patent: March 11, 2014
    Assignee: Panasonic Corporation
    Inventors: Akihiko Murai, Masahiro Kume, Akiko Nakamura, Tooru Aoyagi, Kiyoshi Fujihara
  • Patent number: 8662721
    Abstract: An aircraft external lighting system and method is applicable to aircraft position, navigation and strobe lights. The lighting system includes a light source, a cylindrical lens adjacent the light source, and a lenticular lens between the light source and the cylindrical lens.
    Type: Grant
    Filed: November 26, 2009
    Date of Patent: March 4, 2014
    Inventors: Nathan Howard Calvin, Dean Andrew Wilkinson
  • Patent number: 8657472
    Abstract: A light redirecting film (100) includes a first major surface (110) that includes first microstructures (150) that extend along a first direction and a second major surface (120), which may form part of a matte layer, the second major surface being opposite to the first major surface and including second microstructures (160). The second major surface has an optical haze that is not greater than about 3% and an optical clarity that is not greater than about 85%. The light redirecting film has an average effective transmission that is not less than about 1.75. The light redirecting film (100) may comprise particles. The second microstructures may have a slope distribution.
    Type: Grant
    Filed: May 25, 2010
    Date of Patent: February 25, 2014
    Assignee: 3M Innovative Properties Company
    Inventors: Joseph T. Aronson, Slah Jendoubi, Mitchell A. F. Johnson, Scott R. Kaytor, Tri D. Pham, Robert A. Yapel, Joseph A. Zigal, Steven J. McMan, Steven D. Solomonson, Steven H. Kong, Fei Lu, Gary T. Boyd
  • Patent number: 8582053
    Abstract: A light exit surface of an illuminating lens has a first light exit surface and a second light exit surface. The first light exit surface is recessed toward a point on the optical axis, and the second light exit surface extends outwardly from the periphery of the first light exit surface. The first light exit surface has a transmissive region and a total reflection region. When the position of a light source on the optical axis is defined as a starting point, the transmissive region transmits light that has been emitted from the starting point at a relatively small angle with respect to the optical axis, and the total reflection region totally reflects light that has been emitted from the starting point at a relatively large angle with respect to the optical axis.
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: November 12, 2013
    Assignee: Panasonic Corporation
    Inventors: Tomoko Iiyama, Syunsuke Kimura, Daizaburo Matsuki
  • Patent number: 8576351
    Abstract: An illuminating lens includes a main body and a ring portion. The main body has a light exit surface, and the light exit surface has a first light exit surface recessed toward a point on the optical axis and a second light exit surface extending outwardly from the periphery of the first light exit surface. The first light exit surface has a transmissive region in the center thereof, and a total reflection region on the peripheral side thereof. The ring portion has a back surface configured to guide the light that has been emitted from a light source, totally reflected repeatedly at the light exit surface, and then entered the ring portion to an end surface by total reflection.
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: November 5, 2013
    Assignee: Panasonic Corporation
    Inventors: Syunsuke Kimura, Daizaburo Matsuki, Tomoko Iiyama
  • Patent number: 8558967
    Abstract: A light exit surface of an illuminating lens has a first light exit surface and a second light exit surface. The first light exit surface is recessed toward a point on the optical axis, and the second light exit surface extends outwardly from the periphery of the first light exit surface. The first light exit surface has a transmissive region and a total reflection region. When the position of a light source on the optical axis is defined as a starting point, the transmissive region transmits light that has been emitted from the starting point at a relatively small angle with respect to the optical axis, and the total reflection region totally reflects light that has been emitted from the starting point at a relatively large angle with respect to the optical axis. A reflective layer is formed on a bottom surface that surrounds a light entrance surface and faces oppositely to the light exit surface.
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: October 15, 2013
    Assignee: Panasonic Corporation
    Inventors: Tomoko Iiyama, Syunsuke Kimura, Daizaburo Matsuki
  • Patent number: 8449151
    Abstract: The present invention provides a light control film that can prevent generation of a moiré pattern when it is superimposed on another member having a regular structure while securing sufficient front luminance, and a backlight device using the same. The light control film of the present invention has a light control layer provided with an uneven pattern on a surface, and in this uneven pattern, a plurality of convexes having circular bases of approximately the same diameters are arranged so that the bases thereof should not overlap with one another and each should touch one or two or more other bases, and ratio of convexes arranged so that each of circular bases thereof should touch both bases of two convexes of which bases touch each other is controlled to be 50 to 92% among the total convexes arranged. The backlight device of the present invention is a backlight device incorporated with the aforementioned light control film.
    Type: Grant
    Filed: March 10, 2009
    Date of Patent: May 28, 2013
    Assignee: Kimoto Co., Ltd.
    Inventor: Hideki Etori
  • Publication number: 20130077315
    Abstract: Embodiments described herein provide apparatus and methods for processing semiconductor substrates with uniform laser energy. A laser pulse or beam is directed to a spatial homogenizer, which may be a plurality of lenses arranged along a plane perpendicular to the optical path of the laser energy, an example being a microlens array. The spatially uniformized energy produced by the spatial homogenizer is then directed to a refractive medium that has a plurality of thicknesses. Each thickness of the plurality of thicknesses is different from the other thicknesses by at least the coherence length of the laser energy.
    Type: Application
    Filed: September 24, 2012
    Publication date: March 28, 2013
    Inventor: STEPHEN MOFFATT
  • Patent number: 8369678
    Abstract: Optical devices for guiding illumination are provided each having a body of optical material with staircase or acutely angled ramp structures on its top surface for distributing light inputted from one end of the device from the front exit faces of such structures along certain angular orientations, while at least a substantial portion of the light is totally internally reflected within the body until distributed from such front exit faces. Optical devices are also provided each have a body of optical material having a bottom surface with acutely angled ramp structures and falling structures which alternate with each other, such that light is totally internally reflected within the device until reflected by such ramp structures along the bottom surface to exit the top surface of the device or transmitted through the ramp structures to an adjacent falling structure back into the device.
    Type: Grant
    Filed: July 27, 2009
    Date of Patent: February 5, 2013
    Assignee: RPC Photonics, Inc.
    Inventors: Stephen H. Chakmakjian, Donald J. Schertler, Tasso Sales, G. Michael Morris
  • Publication number: 20130027908
    Abstract: A backlight module includes a light guide plate and a plurality of light sources. The light guide plate includes a wedge-shaped light incident part and a flat panel. The wedge-shaped light incident part and the flat panel have a common bottom surface. The height of the wedge-shaped light incident part is greater than that of the flat panel. The wedge-shaped light incident part includes a light incident surface perpendicular to the bottom surface and a sloped surface sloping relative to the light incident surface and connects to the flat panel. The sloped surface defines a plurality of V-shaped grooves for preventing light leak. The flat panel includes a light emitting surface opposite to the bottom surface. The plurality of light sources is positioned adjacent to the light incident surface.
    Type: Application
    Filed: October 18, 2011
    Publication date: January 31, 2013
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: TAI-CHERNG YU, DA-WEI LIN
  • Patent number: 8360619
    Abstract: A brightness enhancement film including a light transmissive substrate, convex lens portions, concave lens portions, and a reflective layer is provided. The light transmissive substrate has a first surface and a second surface opposite to the first surface. The convex lens portions are disposed on the first surface. Each of the convex lens portions has a curved convex surface facing away from the light transmissive substrate. The concave lens portions are disposed on the first surface. The convex lens portions and the concave lens portions are alternately arranged. Each of the concave lens portions has a curved concave surface facing away from the light transmissive substrate. A wavy continuous curve surface is formed by the curved convex surfaces and the curved concave surfaces. The reflective layer is disposed on the second surface and has light passing openings respectively on the optical axes of the convex lens portions.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: January 29, 2013
    Assignee: Coretronic Corporation
    Inventors: Chao-Hung Weng, Tzeng-Ke Shiau
  • Patent number: 8297802
    Abstract: An optical film includes a body and a plurality of first linear protrusions. The body has a first surface and a second surface opposite to the first surface. The first linear protrusions are disposed on the first surface, and each first linear protrusion is extended along a first direction and has a first curvy ridge line departing from the first surface, wherein the first curvy ridge lines are concave towards a fixed direction. When the first curvy ridge line is located on a suppositional plan, the suppositional plan is not parallel to the first surface. A ratio of a maximum distance between each of the first curvy ridge line and the first surface over a minimum distance between the corresponding first curvy ridge line and the first surface is greater than 1 but less than 8.
    Type: Grant
    Filed: October 9, 2009
    Date of Patent: October 30, 2012
    Assignee: Wintek Corporation
    Inventors: Zhi-Ting Ye, Chun-Chih Huang
  • Patent number: 8197103
    Abstract: A diffusion plate for use with a lighting module is provided. The diffusion plate includes a substrate, a plurality of circular diffusion structures, and at least one star diffusion structure. The circular diffusion structures are disposed on one face of the substrate in array. Each circular diffusion structure includes a plurality of first partial reflecting units. The first partial reflecting units are disposed on the substrate in circular distribution. The outer arcs of adjacent circular diffusion structures together form a star region. The at least one star diffusion structure includes a plurality of second partial reflecting units. The second partial reflecting units are disposed in the star region on the face of the substrate, wherein the second partial reflecting units are distributed in star distribution.
    Type: Grant
    Filed: December 27, 2010
    Date of Patent: June 12, 2012
    Assignee: AU Optronics Corporation
    Inventors: Wei-Tien Chang, Shau-Yu Tsai
  • Patent number: 8177377
    Abstract: An optical plate includes a first surface and a second surface opposite to the first surface. The first surface defines a plurality of elongated, arc-shaped depressions. The second surface defines a plurality of triangular pyramidal depressions and a plurality of four-sided pyramidal depressions. Each four-sided pyramidal depression is surrounded by four triangular pyramidal depressions.
    Type: Grant
    Filed: December 31, 2008
    Date of Patent: May 15, 2012
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Shao-Han Chang
  • Patent number: 8162501
    Abstract: A display device including a plurality of light sources spaced apart from one another, a refracting plate disposed over the plurality of light sources, and first and second refracting surfaces formed at both surfaces of the refracting plate to allow light emitted from the light sources to be scattered plural times by passing through the refracting plate, the first and second refracting surfaces having different shapes from each other. With the display device, light emitted from the light sources can be uniformly diffused, whereby high brightness uniformity can be accomplished even at positions relatively close to the light source, resulting in a reduction in a thickness of the display device.
    Type: Grant
    Filed: February 10, 2009
    Date of Patent: April 24, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae Heon Noh, Jong Il Kim, Dong Seob Jang, Seong Ho Youn
  • Patent number: 8157429
    Abstract: An optical sheet includes a base layer, a light-condensing layer and a plurality of light-reflecting portions. The light-condensing layer includes a plurality of light-condensing portions formed on a second surface of the base layer along a first direction extending from a first side surface to a second side surface perpendicular to the first side surface. The light-condensing portions extended in a second direction crossing the first direction at an angle with respect to the side surface. The light-reflecting portions are formed in the first surface along the second direction and corresponding to a plurality of recesses where the light-condensing portions meet each other. The center of the light-reflecting portion is off set from the recesses along the first direction.
    Type: Grant
    Filed: December 31, 2008
    Date of Patent: April 17, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang-Hoon Lee, Byung-Yun Joo, Min-Young Song, Jin-Sung Choi, Seung-Hwan Chung, Dong-Kwan Kim
  • Publication number: 20120075870
    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: Application
    Filed: September 22, 2011
    Publication date: March 29, 2012
    Applicants: CITIZEN HOLDINGS CO., LTD., CITIZEN ELECTRONICS CO., LTD.
    Inventors: Yasuaki Kayanuma, Junji Miyashita
  • Publication number: 20120051061
    Abstract: An illumination device and a lens thereof are provided. The lens includes a surrounding sidewall, a light-incident surface, a light-incident structure, and a light-emitting surface. The surrounding sidewall includes two planar portions opposite to each other and two arc-surface portions opposite to each other to surround a reference axis. The light-incident surface is located at a side of the surrounding sidewall to receive a light emitted from a point light source. The light-incident structure located on the light-incident surface includes a plurality of bar-shaped protrusions. Each bar-shaped protrusion includes a plurality of first light-diffusing surfaces not parallel to the light-incident surface. The light-emitting surface is located at the other side of the surrounding sidewall and is opposite to the light-incident surface. The light-emitting surface is substantially circular. A cross-section area of the lens gradually increases from the light-incident surface to the light-emitting surface.
    Type: Application
    Filed: August 31, 2011
    Publication date: March 1, 2012
    Applicants: WINTEK CORPORATION, WINTEK TECHNOLOGY(H.K) LTD.
    Inventors: Zhi-Ting Ye, Kuo-Jui Huang
  • Patent number: 8047699
    Abstract: An illuminating device includes a light source module for emitting light and an optical lens configured for adjusting the light emitted from the light source module. The optical lens includes an array of lens units. Each lens unit includes a main body, a light diverging portion and a light converging portion. The main body includes a light incident surface and a light emitting surface opposite to the light incident surface. The light diverging portion is configured for expanding a light field along a first direction, and the light converging portion is configured for compressing a light field along a second direction. The light diverging portion and the light converging portion are formed on at least one of the light incident surface and the light emitting surface. The light diverging portion includes parallel protrusions distributed along the first direction.
    Type: Grant
    Filed: June 16, 2010
    Date of Patent: November 1, 2011
    Assignee: Foxsemicon Integrated Technology, Inc.
    Inventors: Yi-Kai Cheng, Jyh-Long Chern, Ping-Yu Chen
  • Patent number: 8042975
    Abstract: A plano-Fresnel LED lens and a LED assembly thereof are revealed. The lens is a Fresnel lens whose optical surface on the forward side thereof is a plano surface having saw teeth with vertical taper (draft with vertical shape) so that the lens in the LED assembly concentrates light emitted from a LED chip to generate light whose peak intensity is an elliptic distribution pattern. Moreover, the lens and the LED assembly thereof satisfy certain conditions. Thereby, light from the LED chip is gathered by a single lens to form a preset specific distribution pattern and is satisfying requirement of the ratio of the luminous flux that is larger than 85%. The plano-Fresnel LED lens and a LED assembly thereof are applied to lights and flashlights in mobile phones or cameras.
    Type: Grant
    Filed: May 20, 2009
    Date of Patent: October 25, 2011
    Assignee: E-Pin Optical Industry Co., Ltd.
    Inventors: San-Woei Shyu, Yi-Min Chen
  • Patent number: 8035771
    Abstract: A stereoscopic 3D liquid crystal display apparatus includes a liquid crystal display panel, a backlight positioned to provide light to the liquid crystal display panel, and a double sided prism film disposed between the liquid crystal display panel and the backlight. The backlight includes a light guide having a first side and a second side opposite the first side, and having a first surface extending between the first and second sides and a second surface opposite the first surface. The first surface substantially re-directs light and the second surface substantially transmits light. A plurality of first light sources is arranged along the first side of the light guide for transmitting light into the light guide from the first side. A plurality of second light sources is arranged along the second side of the light guide for transmitting light into the light guide from the second side. The second surface includes a regular array of linear prism or lenticular features.
    Type: Grant
    Filed: October 2, 2007
    Date of Patent: October 11, 2011
    Assignee: 3M Innovative Properties Company
    Inventors: Robert L. Brott, John C. Schultz, John C. Nelson
  • Patent number: 8023193
    Abstract: An illumination system including at least one coherent light source, a light uniforming device and a lenticular sheet module is provided. The coherent light source is capable of emitting a coherent beam. The light uniforming device is disposed on a transmission path of the coherent beam. The lenticular sheet module disposed on a transmission path of the coherent beam and between the coherent light source and the light uniforming device, includes a first lenticular sheet and a second lenticular sheet. The first lenticular sheet includes a plurality of first rod-like lenticulars disposed side by side extending along a first extending direction. The second lenticular sheet disposed between the first lenticular sheet and the light uniforming device, includes a plurality of second rod-like lenticulars disposed side by side extending along a second extending direction. The first extending direction and the second extending direction make an angle greater than 0 degree.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: September 20, 2011
    Assignee: Young Optics Inc.
    Inventor: S-Wei Chen
  • Patent number: 8016459
    Abstract: An illuminating device includes a light source module for emitting light and an optical lens for adjusting the light. The light source module includes a reflecting unit and LEDs. The reflecting unit includes strip-shaped grooves each extending along a first direction. The LEDs are mounted on the reflecting unit in the grooves. The optical lens includes an array of lens units each including a main body, a light diverging portion and a light converging portion. The light diverging portion is for expanding a light field of the LEDs along the first direction. The light converging portion is for compressing the light field along a second direction. The reflecting unit is for further compressing the light field along the second direction.
    Type: Grant
    Filed: June 16, 2010
    Date of Patent: September 13, 2011
    Assignee: Foxsemicon Integrated Technology, Inc.
    Inventors: Yi-Kai Cheng, Jyh-Long Chern, Ping-Yu Chen
  • Patent number: 7993017
    Abstract: A projection display apparatus 101 in which the light quantity adjusting means has a simple and readily interchangeable structure, and which can improve image quality by adjusting the quantity of light received by a light valve continuously, without causing illuminance irregularities, and without having unwanted light radiated onto the screen, the light quantity adjusting means 9 having light blocking members 91L, 91R for blocking light in transit to a second lens array 22, and rotational axes 91LA, 91RA for turnably supporting each of the light blocking members on an xy plane, the light blocking members 91L, 91R and rotational axes 91LA, 91RA being positioned so that the rotational axes 91LA, 91RA are disposed in positions symmetric with respect to the optical axis AX on the xy plane, and the turning range from the light blocking initiation position at which the light blocking members 91L, 91R, by being turned, start to block light in transit toward the second lens array 22 to the maximum light blocking posi
    Type: Grant
    Filed: October 29, 2007
    Date of Patent: August 9, 2011
    Assignee: Mitsubishi Electric Corporation
    Inventors: Akihiro Yamada, Motoo Takahashi, Akira Daijogo, Tomohiro Bessho, Kenji Samejima