Noncyclindrical Or Nonplanar Shaped Waveguide Patents (Class 385/146)
  • Patent number: 10371884
    Abstract: Techniques are provided for a high dynamic range panel that includes an array of light sources (202,203) illuminating a corresponding array of light guides (204, 206). A light source (202) of the array illuminates a first light guide (204). The light source directly underlies, such as in a cavity (208), a second light guide (206) that is adjacent to the first light guide. The light source (202) does not extend below a bottom side (214) of either the first light guide or the second light guide to reduce thickness of the panel. The light source (202) and the first light guide (204) can be integrated as a tile assembly. Alternatively, the light source (202) and the second light guide (206) can be an integrated tile assembly. In a specific embodiment, the light source emits a blue or ultraviolet light, which is converted by quantum dots to a different color.
    Type: Grant
    Filed: August 3, 2015
    Date of Patent: August 6, 2019
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Ajit Ninan, Robin Atkins
  • Patent number: 10345532
    Abstract: A ferrule has a receiving area for receiving and securing an optical waveguide and an optical element for receiving light from an optical waveguide received and secured at the receiving area and changing at least one of a divergence and a propagation direction of the received light. A plurality of registration features are configured to permit a stacking of the ferrule in a stacking direction such that the ferrules in the stack are aligned relative to each other along a length of the ferrule and along a direction perpendicular to the stacking direction.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: July 9, 2019
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Terry L. Smith, Alexander R. Mathews
  • Patent number: 10318075
    Abstract: A light emission device is used for a casing of the game device. This light emission device comprises a light source disposed in the casing, and a light guiding member having a plate-like shape, the light guiding member being configured to guide light emitted from the light source and being attached to the casing. The light guiding member comprises a reflecting unit configured to reflect the light incident from a first direction along a thickness direction of the light guiding member to a direction different from the first direction to diffuse the light in the interior of the light guiding member; and a light emission part configured to transmit the light reflected from the reflecting unit to outside from a surface of the light guiding member.
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: June 11, 2019
    Assignee: SEGA SAMMY CREATION INC.
    Inventors: Hiroki Nunokawa, Kenji Kuwahara
  • Patent number: 10310302
    Abstract: A screen for operation in a free viewing mode or a restricted viewing mode, comprising: an image reproduction unit, a plate-shaped transparent light guide in front of the image reproduction unit and luminous means arranged on sides of the light guide. The image reproduction unit is arranged behind the light guide. In the free-viewing mode, the luminous means are switched off, with the result that the light which comes from the image reproduction unit and onto which image information is modulated passes through the light guide substantially without influence. The luminous means are switched on in the restricted-viewing mode. A light emission characteristic is generated either on the basis of scattering particles which are distributed spatially and/or in terms of the concentration in the light guide or on the basis of coupling elements arranged on at least one of the large surfaces of the light guide.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: June 4, 2019
    Assignee: siOPTICA GmbH
    Inventors: Markus Klippstein, Uwe Schroeter, Juergen Schwarz
  • Patent number: 10274661
    Abstract: A backlight assembly uses one or more lighting elements and a light guide to provide backlight with a reduced number of lighting elements. The light guide is optically coupled with the one or more lighting elements and is configured to receive light at one or more locations, internally reflect the light at the extremities of the light guide, extract the light from the light guide, and radiate the light from a surface of the light guide to backlight an area.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: April 30, 2019
    Assignee: Rockwell Collins, Inc.
    Inventors: Ricky J. Johnson, David J. Gulick
  • Patent number: 10261233
    Abstract: A backlight unit includes a light guide layer including a plurality of extraction features disposed along a rear face of the light guide layer, a first cladding layer adhesively secured to the rear face of the light guide layer, a plurality of turning structures disposed along the first cladding layer, and a second cladding layer adhesively secured to a front face of the light guide layer. The first cladding layer has a first refractive index lower than a guide refractive index of the light guide layer. The second cladding layer has a second refractive index lower than or equal to the first refractive index.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: April 16, 2019
    Assignee: Microsoft Technology Licensing, LLC
    Inventor: Timothy Large
  • Patent number: 10222535
    Abstract: The present disclosure describes a flat lightguide configured to be illuminated by one or more small light sources, such as light emitting diode (LED) light sources. The one or more small light sources inject light into an end of a stepped lightguide that includes light redirecting elements capable of changing the direction of the light to exit perpendicular to the stepped lightguide and enter an edge of a planar lightguide.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: March 5, 2019
    Assignee: 3M Innovative Properties Company
    Inventors: Tilo Remhof, Nicholas T. Gabriel, Andrew J. Ouderkirk
  • Patent number: 10215906
    Abstract: The present invention provides a light guide plate, a backlight module, and a method for manufacturing the light guide plate. The light guide plate include a light guide plate body, on which at least two layers of dots having a refractive index different from the light guide plate body are distributed. According to the light guide plate of the present invention, the dots are distributed on at least two layers, rather than merely on a single interface as that in the traditional light guide plate. As a result, the dot density in an identical region of the light guide plate will exceed the limit of 100%, and thereby a better light guide effect will be achieved. In addition, according to the method of the present invention, the light guide plate is manufactured based on a 3D printing technology.
    Type: Grant
    Filed: July 23, 2014
    Date of Patent: February 26, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI BOE DISPLAY LIGHTING CO., LTD.
    Inventor: Zuchuan Shi
  • Patent number: 10054723
    Abstract: A prism sheet and a liquid crystal display (LCD) device having the same are provided to improve optical efficiency of the prism sheet by changing a refractive angle of light, which is incident at an angle less than a minimum angle to an effective angle, by forming a concave surface on a bottom surface of prism patterns. Optical efficiency of the prism sheet is also improved by refracting light, which is incident at an angle more than a maximum angle, toward the adjacent prism pattern, by forming the bottom surface of the 2nth prism pattern in a groove of a base film.
    Type: Grant
    Filed: November 30, 2015
    Date of Patent: August 21, 2018
    Assignee: LG Display Co., Ltd.
    Inventor: YoonHo Kwon
  • Patent number: 10032821
    Abstract: In an imaging device having a waveguide, a surface of an insulating film covering a seal ring is prevented from getting rough. A pixel region, a peripheral circuit region, and a seal region are defined over a semiconductor substrate. After formation of a pad electrode in the peripheral circuit region and a seal ring in the seal ring region, a TEOS film is so formed as to cover the pad electrode and the seal ring. A pattern of a photoresist for exposing a portion of the TEOS film covering the pad electrode and the seal ring, respectively, is formed and etching treatment is subjected to the exposed TEOS film. Then, after the pattern of the photoresist has been formed, a second waveguide holding hole is formed in the pixel region by performing etching treatment.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: July 24, 2018
    Assignee: Renesas Electronics Corporation
    Inventor: Kazuo Tomita
  • Patent number: 9992364
    Abstract: The invention relates to a document scanning device having a document bed for placement of an identification document, a detection apparatus for detecting an actual position of the identification document on the document bed and a display apparatus for displaying a reference to the target position of the identification document on the document bed.
    Type: Grant
    Filed: July 12, 2013
    Date of Patent: June 5, 2018
    Assignee: Bundesdruckerei GmbH
    Inventors: Andreas Wolf, Martin Cobernuss, Uwe Rabeler
  • Patent number: 9977283
    Abstract: A backlight module includes a light guide plate; a first light source arranged along a first side of the light guide plate; a plurality of second light sources arranged along at least one of the two sides perpendicular to the first side, wherein the plurality of second light sources have different color temperatures, and values of the color temperatures of the second light sources at different positions are determined according to the light absorption characteristics of the light guide plate so as to compensate for the light absorbed by the light guide plate corresponding to the color temperature of the second light source.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: May 22, 2018
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Qing Liu
  • Patent number: 9964687
    Abstract: A luminaire is provided. A main surface of a light-guiding panel included in the luminaire includes a reflecting area having a plurality of approximately conical recesses. An angle ? formed by a lateral surface of each of the recesses and the main surface of the light-guiding panel satisfies a condition defined by a distance D from a center position of a light source to a center position of the reflecting area, a distance H from an illumination target surface to the center position of the light source, an angle ? which the light-guiding panel forms with a horizontal plane, a refractive index n of the light-guiding panel, and a surface roughness Ra of the lateral surface of each of the recesses.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: May 8, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Hiroyuki Sekii, Kyohei Nakamura
  • Patent number: 9952633
    Abstract: Disclosed are optical connectors for electronic devices that are disposed at a hinge of the device. The electronic device has an optical connector comprising a base portion having a hinge with a hinge attachment structure and a base connector having one or more base optical channels, and a display. The display comprising a display attachment structure and a display connector having one or more display optical channels for mating with the base connector. The concepts disclosed allow an optical connection for electronic devices having a display that is separable from a base portion.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: April 24, 2018
    Assignee: Corning Optical Communications LLC
    Inventors: Micah Colen Isenhour, James Phillip Luther, Percil Watkins
  • Patent number: 9927571
    Abstract: An illumination device for illuminating at least one spatial light modulator device. At least one light source device with at least one light source illuminates the at least one spatial light modulator device; a light guiding element through which light emanating from the light source propagates; and at least one light decoupling element arranged on top or inside of the light guiding element. The at least one light decoupling element decouples of a wave field of the light which propagating in the light guiding element into the direction of the spatial light modulator device. The light guiding element has a refractive index which is lower than or at least equal to the refractive index of the at least one light decoupling element. The entrance angle of the wave field entering the light decoupling element is determined by the difference between the refractive indices according to a particular equation.
    Type: Grant
    Filed: October 24, 2013
    Date of Patent: March 27, 2018
    Assignee: SEEREAL TECHNOLOGIES S.A.
    Inventor: Gerald Futterer
  • Patent number: 9891388
    Abstract: A ferrule (10) has a receiving area for receiving and securing an optical waveguide (20) and an optical element (13) for receiving light from an optical waveguide received and secured at the receiving area and changing at least one of a divergence and a propagation direction of the received light. A plurality of registration features (30, 31, 32, 33, 34) are configured to permit a stacking of the ferrule in a stacking direction such that the ferrules in the stack are aligned relative to each other along a length of the ferrule and along a direction perpendicular to the stacking direction.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: February 13, 2018
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Terry L. Smith, Alexander R. Mathews
  • Patent number: 9812484
    Abstract: An image pickup apparatus includes a semiconductor layer that constitutes a pixel circuit region and a peripheral circuit region. An element isolation portion is disposed in the pixel circuit region and the peripheral circuit region, defines an element portion of the semiconductor layer, and contains an insulator. The element isolation portion in the pixel circuit region has a hydrogen concentration 10 times or more higher than the hydrogen concentration of the element isolation portion in the peripheral circuit region.
    Type: Grant
    Filed: May 17, 2016
    Date of Patent: November 7, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hideaki Ishino, Katsunori Hirota
  • Patent number: 9746597
    Abstract: A light pipe for transmitting lights includes a light incident wall, a light radiation wall, a first side wall, and a second side wall, the light incident wall opposite the light radiation wall, the first side wall opposite the second side wall, the first side wall and the second side wall are connected between the light incident wall and the light radiation wall, respectively. the first side wall and the second side wall are parabolic and having focal points between the first side wall and the second side wall, the first side wall and the second side wall are parabolic making the lights passing through the light radiation wall be uniformly distributed.
    Type: Grant
    Filed: February 4, 2015
    Date of Patent: August 29, 2017
    Assignees: HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Hsien-Huan Chiu, Xiang-Kun Zhong
  • Patent number: 9677722
    Abstract: Lighting assembly comprises an optical fiber light guide panel member having a light conducting core cladded on opposite sides by cladding made of optically transparent material having a lower index of refraction than the light conducting core to cause total internal reflection of conducted light within the light conducting core at the core-cladding interface. Disruptions at one or more areas of the cladding cause conducted light within the light conducting core to be emitted from one or more areas of the panel member. Electrical circuitry is bonded to one or both sides of the cladding. One or more LEDs embedded in the panel member are in electrical conduct with the electrical circuitry and optically coupled to the light conducting core.
    Type: Grant
    Filed: February 22, 2012
    Date of Patent: June 13, 2017
    Assignee: LUMITEX, INC.
    Inventors: Peter W. Broer, Gregg M. Kloeppel, Michael D. Andrich, Mark Cartellone, Brian M. Spahnie
  • Patent number: 9664838
    Abstract: Provided is an edge-light type illumination device capable of increasing luminance directly thereunder and capable of providing anisotropy to the luminance distribution. Light to be emitted from an emission surface (2d) of a light-guide plate (2) fulfills a condition (1) Etotal/Em>2.0 and a condition (2) Etotal(20°,0°)/Etotal(20°,90°)>1.2.
    Type: Grant
    Filed: April 4, 2013
    Date of Patent: May 30, 2017
    Assignee: KURARAY CO., LTD.
    Inventor: Seiji Kinoshita
  • Patent number: 9658385
    Abstract: Optically patterned waveguides and systems employing optically patterned waveguides are provided. The optically patterned waveguide is configured for use in a lighting system and arranged perpendicular to an overhead structure, such as a ceiling. The optically patterned waveguide includes major surfaces that are patterned with a plurality of elongated facets formed into the major surfaces and extending in a direction parallel to the length of the waveguide. The optically patterned waveguide provides illumination patterns having increased uniformity.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: May 23, 2017
    Assignee: General Electric Company
    Inventors: Mark Marshall Meyers, Steven Robert Hayashi
  • Patent number: 9626043
    Abstract: The present invention provides an optical touch system, applied to an electronic apparatus having at least a physical plane. It comprises: an optical unit set on the physical plane and configured to produce a first optical effect; an image acquisition unit set on the physical plane, at least a part of the optical unit being within an acquisition range of the image acquisition unit, a touch operation area being formed by the image acquisition unit and the optical unit; the image acquisition unit configured to capture an image having a second optical effect which is formed on the first optical effect after an operation body for operating the electronic apparatus enters the touch operation area; a processing unit being connected with the image acquisition unit and configured to determine the range of the operation body in the touch operation area according to the image having the second optical effect.
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: April 18, 2017
    Assignee: LENOVO (BEIJING) CO., LTD.
    Inventors: Jingping Yang, Ke Shang, James Rutledge
  • Patent number: 9588259
    Abstract: An optical element includes a base, and primary structures and secondary structures disposed on a surface of the base, each of the primary structures and secondary structures being a projection or a depression. The primary structures constitute a plurality of rows of tracks on the surface of the base and are periodically repeatedly arranged at a fine pitch equal to or smaller than a wavelength of visible light. The secondary structures are smaller in size than the primary structures, and are provided between the primary structures, in the gaps in the arrangement of the primary structures, or on the surfaces of the primary structures.
    Type: Grant
    Filed: July 15, 2009
    Date of Patent: March 7, 2017
    Assignee: Sony Corporation
    Inventors: Kazuya Hayashibe, Sohmei Endoh
  • Patent number: 9568663
    Abstract: A light guide plate including a first substrate, a second substrate opposite to the first substrate, a plurality of first microstructures, a plurality of second microstructures, and a plurality of third microstructures is provided. The first substrate has a light emitting surface, a first bottom surface, and a light incidence surface. The second substrate has a top surface and a second bottom surface. The top surface is located between the first substrate and the second bottom surface. The first microstructures and the second microstructures are disposed on the light emitting surface and the second bottom surface respectively and extend along a first direction parallel to the light incidence surface respectively. The third microstructures are connected between the first bottom surface and the top surface and extend along a second direction perpendicular to the light incidence surface respectively. A light source module is also provided.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: February 14, 2017
    Assignee: Winbond Electronics Corp.
    Inventors: Jui-Wen Pan, Che-Wen Chiang, Chang-Yi Li, Yung-Chih Huang
  • Patent number: 9541695
    Abstract: Disclosed is a light source device. The light source device includes: a light guide plate; a reflector disposed under the light guide plate; a light source unit optically coupled to the light guide plate; and a photo luminescent film disposed between the light guide plate and the light source unit, wherein the photo luminescent film includes at least two partitioned areas, and wherein a first fluorescent material included in at least one area of the at least two areas is different from a second fluorescent material included in the other areas.
    Type: Grant
    Filed: March 4, 2011
    Date of Patent: January 10, 2017
    Assignee: LG Innotek Co., Ltd.
    Inventors: Yun Ha Kim, Sang Hoon Lee, Hyunha Shin
  • Patent number: 9494298
    Abstract: A beam collimated light emitting module with a light color mixed chamber includes a light holder, a light source assembly located on the light holder, an optical lens covering the light source assembly, and a reflector. The optical lens includes a first light exit surface, a light entrance surface, and a second light exit surface. The first light exit surface has a round-shaped concave surface formed by recessing the first light exit surface, and the aspheric curvature of the concave surface is gradually decreased in an outward direction away from the center of the optical lens. The reflector surrounds the optical lens. When the light source assembly emits light, the bluish white light and the yellowish white light of the light source assembly are refracted by the concave surface, and next the bluish white light and the yellowish white light are reflected by the reflector.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: November 15, 2016
    Assignee: EDISON OPTO CORPORATION
    Inventor: Chien-Yu Shen
  • Patent number: 9466740
    Abstract: An encapsulated integrated photodetector waveguide structures with alignment tolerance and methods of manufacture are disclosed. The method includes forming a waveguide structure bounded by one or more shallow trench isolation (STI) structure(s). The method further includes forming a photodetector fully landed on the waveguide structure.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: October 11, 2016
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Solomon Assefa, Bruce W. Porth, Steven M. Shank
  • Patent number: 9423582
    Abstract: An encapsulated integrated photodetector waveguide structures with alignment tolerance and methods of manufacture are disclosed. The method includes forming a waveguide structure bounded by one or more shallow trench isolation (STI) structure(s). The method further includes forming a photodetector fully landed on the waveguide structure.
    Type: Grant
    Filed: August 24, 2015
    Date of Patent: August 23, 2016
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Solomon Assefa, Bruce W. Porth, Steven M. Shank
  • Patent number: 9405139
    Abstract: According to one embodiment, a backlight includes a light source, a light guide plate provided laterally to the light source to convert light from the light source into planar light, and multiple optical sheets provided in a laminated manner between the light guide plate and a liquid crystal panel. A liquid crystal display device includes a frame surrounding and holding the liquid crystal panel and the backlight. The frame includes fitted portions recessed in positions opposed to the optical sheets. The optical sheets each include protrusions provided on both sides close to the light source to be fitted into the respective fitted portions. The optical sheets each further include a stuck portion provided on the side near the light source and stuck to a double-sided adhesive tape.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: August 2, 2016
    Assignee: Japan Display Inc.
    Inventor: Toshikatsu Sugimoto
  • Patent number: 9389356
    Abstract: The present invention discloses a LED backlight module, which comprises a backplane; a side-type backlight source, which comprises a backlight source substrate and multiple light emitting diodes provided on the backlight light source substrate; a reflector, which is provided on the backplane; multiple light guides provided on the reflector in parallel, each light guide being provided with at least one light-incident surface and one light-emitting surface, the light-incident surface of the light guide being opposite to the LED; diffusers provided on the multiple light guides, which are opposite to the light-emitting surface of the light guide; and an optical film set, which is located above the diffuser. The embodiment of the present invention further discloses the corresponding liquid crystal display. According to the embodiment of the present invention, it can save the amount of LEDs, which is beneficial for the narrow frame of the liquid crystal display panel.
    Type: Grant
    Filed: October 18, 2013
    Date of Patent: July 12, 2016
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Hu He
  • Patent number: 9383495
    Abstract: To provide a lateral light emitting device that can prevent coupling efficiency in a fused portion of a rod lens and a prism from being deteriorated, can set an outside diameter extremely small, and set the distance to a beam waist long. A lateral light emitting device includes an optical fiber 2, a rod lens 3, one end of which is fused to the end surface of the optical fiber 3, and a prism 4 fused to the other end of the rod lens. The prism has a base shape obtained by cutting a part of the circumference of a cylinder and forming a flat emission surface 4c parallel to an axial line. In a fused portion of the rod lens and the prism, the outside diameter of a fused end surface of the rod lens is equal to or smaller than the smallest diameter of a fused end surface of the prism. The fused end surface of the rod lens does not protrude from the fused end surface of the prism. A center O1 of the fused end surface of the rod lens and a center O2 of a circular arc of the fused end surface of the prism are offset.
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: July 5, 2016
    Assignee: Toyo Seikan Group Holdings, Ltd.
    Inventors: Naofumi Maruyama, Toshiaki Fukuda
  • Patent number: 9377572
    Abstract: A backlight unit includes a light source which emits a first light, a light guide bar extending in a first direction, where the light guide bar receives the first light through an incident surface thereof, and guides the first light to convert the first light to a second light, and a control pattern disposed on a surface of the light guide bar, which extends in the first direction, where the control pattern converts the second light to a third light, and has a shape extending in the first direction to control an exit angle of the third light.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: June 28, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Heugon Kim, JooYoung Kim, Jin Seo, Insun Hwang
  • Patent number: 9335530
    Abstract: A solar concentrator, comprising: a substantially planar light insertion layer being made of light-transmissive material and including: an optical entry surface, an array of optical redirecting elements, and an array of optical exits being, each of the optical redirecting elements receiving and redirecting light towards an optical exit; a substantially planar light guide layer being made of light-transmissive material and including: a first surface for receiving light exiting the light insertion layer, a second surface opposite the first surface, the first and second surfaces being structured and arranged with one respect to the other such that light entering the light guide layer is guided to at least one optical output surface via a series of reflections; and an array of optical apertures optically interconnecting the light insertion layer and the light guide layer formed by at least one deformed optical coupling element. A method of manufacture thereof is also disclosed.
    Type: Grant
    Filed: April 30, 2013
    Date of Patent: May 10, 2016
    Assignee: MORGAN SOLAR INC.
    Inventors: John Paul Morgan, Pascal Dufour
  • Patent number: 9311865
    Abstract: A display includes a lightguide having an array of light extraction features that can be actively controlled to direct varying amounts of light received from one or more light sources arranged at the edge of the display. The light extraction features include two fluids with different refractive indices. The relative positions of the fluids in each light extraction feature are controlled, e.g., by electrowetting, to control the amount of light directed toward the display.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: April 12, 2016
    Assignee: Amazon Technologies, Inc.
    Inventors: Jerry Yee-Ming Chung, Siddharth Gupta
  • Patent number: 9304244
    Abstract: A light guide plate includes a light exit surface, a light guide plate bottom surface, and at least one light incidence surface. The light exit surface and the light guide plate bottom surface are opposite to each other. The light incidence surface is connected to the light exit surface and the light guide plate bottom surface. The light guide plate is of a wedge configuration and has an end that is close to the light incidence surface and has a thickness greater than a thickness of an end thereof distant from the light incidence surface. The light guide plate includes a hollow wedge cavity that includes a hollow wedge cavity bottom surface adjacent to the light guide plate bottom surface. The hollow wedge cavity receives therein a reflector plate laminated on the hollow wedge cavity bottom surface and having a surface facing the light exit surface and including reflection projections.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: April 5, 2016
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Gege Zhou
  • Patent number: 9243760
    Abstract: The present invention relates to an optical light mixer providing a homogenized and uniform light beam where the optical light mixer is formed of a solid transparent material and light enters the optical light mixer through an entrance surface and is reflected through said body to an exit surface where said light exits said optical light mixer. The optical light mixer comprises a first part formed as a pyramid frustum where the top surface of the pyramid frustum forms the entrance surface and a second part formed as a cone frustum and where the bottom surface the cone frustum forms the exit surface. The present invention relates also to an illumination device comprising a number of light sources and such optical light mixer.
    Type: Grant
    Filed: November 25, 2011
    Date of Patent: January 26, 2016
    Assignee: Martin Professional ApS
    Inventors: Kildeby Nina Lillelund, Dennis Thykjaer Jørgensen
  • Patent number: 9245876
    Abstract: The present disclosure relates to the technical field of light emission of an LED and discloses a light emitting diode assembly, a backlight module, a liquid crystal display and an illumination device. The LED assembly comprises a lamp base and at least one pair of LED dies. The lamp base has a mounting groove. A pair of the LED dies are mounted at a bottom surface of the mounting groove, and two LED dies in the pair of LED dies are disposed symmetrically about an axis of the mounting groove. Among angles formed by intersection of planes where light exit surfaces of the two LED dies lie, an angle facing the bottom surface of the mounting groove is greater than 0 degree and less than 180 degrees. The light emitting diode assembly has a larger light exit angle and exhibits a simple structure.
    Type: Grant
    Filed: January 6, 2015
    Date of Patent: January 26, 2016
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BOE OPTICAL SCIENCE AND TECHNOLOGY CO., LTD.
    Inventor: Tao Wang
  • Patent number: 9231131
    Abstract: An encapsulated integrated photodetector waveguide structures with alignment tolerance and methods of manufacture are disclosed. The method includes forming a waveguide structure bounded by one or more shallow trench isolation (STI) structure(s). The method further includes forming a photodetector fully landed on the waveguide structure.
    Type: Grant
    Filed: January 7, 2014
    Date of Patent: January 5, 2016
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Solomon Assefa, Bruce W. Porth, Steven M. Shank
  • Patent number: 9207623
    Abstract: The neutralization units 12a and 12b are arranged between the primary transfer positions and the cleaning units 11a and 11b, and, irradiate a region on the image supporting body 2a with first neutralization light 131, the regions spanning from a position facing the primary transfer position to a position facing the cleaning unit 11a. The neutralization units 12a and 12b irradiate a region on the image supporting body 2b with second neutralization light 132, the region spanning from a position facing the developing unit 16b to a position facing the primary transfer position. The neutralization units 12a and 12b include a first reflective part and a second reflective part provided at different positions on a side face of the light guiding body. The first reflective part forms the light 131 and the second reflective part forms the light 132 by reflecting the light from the neutralization light source.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: December 8, 2015
    Assignee: KYOCERA DOCUMENT SOLUTIONS INC.
    Inventor: Yuji Kamiyama
  • Patent number: 9182538
    Abstract: A planar light source device with highly uniform intensity and high light utilization efficiency, and a display apparatus incorporating the same, are provided. A light guide plate, configured by a material such as plate-shaped and transparent acryl resin, polycarbonate resin, or glass, causes incident light to propagate within the light guide plate and then to exit the light through an exit surface as a surface emitting light. A first recess is formed substantially in the center of the exit surface. The first recess is cylinder-shaped, and on a bottom thereof is provided a lens that refracts incident light from a light source, in a direction away from the center of a circle on the bottom.
    Type: Grant
    Filed: January 23, 2014
    Date of Patent: November 10, 2015
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Seiji Sakai
  • Patent number: 9170364
    Abstract: A lighting assembly includes a light source to emit on-axis light rays at smaller angles relative to an optical axis of the light source, and off-axis light rays at larger angles relative to the optical axis and spectrally different from the on-axis light rays. The lighting assembly additionally includes a light guide having a light input edge adjacent the light source and opposed major surfaces between which light from the light source propagates by total internal reflection. The light input edge has an edge feature aligned with the light source to receive light therefrom. The edge feature specularly redirects the on-axis light rays and the off-axis light rays differently to increase overlap between the on-axis light rays and the off-axis light rays within the light guide. The increased overlap reduces spatial color variation of light extracted from the light guide between locations at different angles from the optical axis.
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: October 27, 2015
    Assignee: Rambus Delaware LLC
    Inventors: Robert M Ezell, Martin E Ligas, Timothy A McCollum, Gregg M Podojil
  • Patent number: 9140829
    Abstract: The present invention relates to an apparatus for fabricating a light guide panel which can improve light efficiency and brightness, and a backlight unit having the light guide panel. The backlight unit includes a light source for generating a light, and a light guide panel for guiding the light incident thereon from the light source, the light guide panel having an upper pattern which is formed on a front side thereof for emitting the light guided thus to upward and a lower pattern which is formed on a backside thereof for reflecting or refracting the light, wherein the lower pattern of the light guide panel is formed in an intaglio pattern having a vertical angle at which two inclined planes meet, and one of the two inclined planes the light from the light source incident thereon has an angle of 45˜55°.
    Type: Grant
    Filed: December 23, 2010
    Date of Patent: September 22, 2015
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Jae-Hyun Park, Gi-Bin Kim, Young-Sik Oh, Sun-Man Kim, Min-Soo Park
  • Patent number: 9116382
    Abstract: A liquid crystal display device having brightness uniformity at its front and lateral sides is provided according to one or more embodiments. In one embodiment, the liquid crystal display device includes a reflection sheet reflecting light, an optical plate including a substrate for guiding light, a height-varying portion formed on one surface of the substrate, not facing the reflection sheet, and a prism pattern formed on the height-varying portion, and a plurality of light sources arranged on one lateral surface of the optical plate in a first direction so as to correspond to a position of the height-varying portion having a height not greater than an average height from the one surface of the substrate to the height-varying portion, wherein the prism pattern extends in a second direction substantially perpendicular to the first direction, and the average height is in a range of about 0.1% to about 10% of the thickness of the substrate.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: August 25, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jeong Min Seo, Jee Hong Min, Young Chan Kim, Moon Gyu Lee, Kyu Seok Kim
  • Patent number: 9115863
    Abstract: An optical compound sheet for a backlight module includes a base layer formed of a transparent material, a plurality of structured patterns formed on the base layer at a predetermined interval, a light-condensing layer which includes a surface coating including nano-particles distributed on the surface of the structured patterns at the thickness of 0.01 ?m to 1 ?m, and an anti-scratching layer which is coated under the base layer at the thickness of 0.1 ?m to 3 ?m by using the UV-curable bond containing nano-particles. While improving the anti-scratching performance by using the surface coating and the anti-scratching layer containing the nano-particles, the wet-out and Moire phenomena are greatly reduced by the finely separate coating of the nano-particles, thereby achieving both the light-condensing function and light-diffusing function.
    Type: Grant
    Filed: July 2, 2010
    Date of Patent: August 25, 2015
    Assignee: CCS(Shanghai) Functional Films Industry Co., Ltd.
    Inventors: Qingsong Jin, Qing Wang
  • Patent number: 9110203
    Abstract: Provided is a display device. The display device includes a light guide plate; a light source disposed at a lateral side of the light guide plate; and an optical path conversion unit converting a path of the light emitted from the light source. A first area corresponding to a light emitting plane of the light guide plate and a second area adjacent to the first area are defined. The optical path conversion unit is disposed in the second area.
    Type: Grant
    Filed: February 7, 2012
    Date of Patent: August 18, 2015
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Eun Sung Seo, Ki Cheol Kim, In Jae Yeo
  • Patent number: 9057831
    Abstract: In an optical waveguide 10 with a light-emitting element to be used in the present invention, a core includes: a main path; and a plurality of branched paths branched at a plurality of branched points from the main path. The main path has two sides faced to each other, in which one side has a plurality of branched points and the other side does not have any branched points. The plurality of branched points are provided on a straight line substantially parallel to a light guiding direction of the main path. The width of the main path becomes narrower as the main path moves away from a light-emitting element. An angle ? formed by the other side without a branched point and the light guiding direction of the main path is 0.3 to 1.7°.
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: June 16, 2015
    Assignee: NITTO DENKO CORPORATION
    Inventors: Akiko Nagafuji, Yusuke Shimizu, Noriyuki Juni
  • Patent number: 9045590
    Abstract: Different interfacial processes for producing photoactive additives are disclosed. Generally, the photoactive additives are formed from a photoactive moiety, a first linker moiety, and a diol chain extender. The resulting additives can be crosslinked with other polymers upon exposure to UV radiation.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: June 2, 2015
    Assignee: SABIC Global Technologies B.V.
    Inventors: James Franklin Hoover, Derek Lake, Jean-Francois Morizur, Paul Dean Sybert
  • Patent number: 9036974
    Abstract: Example fiber optic enclosures include a cable spool assembly and a cover. Each disc of the cable spool assembly has a removable section that extends radially outwardly from a central portion of the disc. The cable spool assembly has a first diameter when the removable sections are attached to the discs. The central portion of each disc has a second diameter. The cover has a lateral dimension that is smaller than the first diameter of the cable spool assembly and larger than the second diameter of the cable spool assembly. Certain types of spool assemblies include a termination region including a plurality of adapters that rotate in unison with the first disc of the cable spool assembly.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: May 19, 2015
    Assignee: ADC Telecommunications, Inc.
    Inventors: Thomas G. LeBlanc, Scott C. Kowalczyk, Oscar Fernando Bran de León
  • Patent number: 9031099
    Abstract: An optical active fiber is configured with an asymmetrically-shaped core having at least one long axis and a shortest axis which extends transversely to the long axis. The outmost cladding of the active fiber is configured with a marking indicating the orientation of the short axis. The marking allows for bending the fiber so that the shortest axis extends along and lies in the plane of the bend thereby minimizing distortion of a mode which is guided by the asymmetrically-shaped core as light propagates along the bend.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: May 12, 2015
    Assignee: IPG Photonics Corporation
    Inventors: Valentin I Gapontsev, Mikhail Vyatkin, Vladimir Sergueev, Dan Myasnikov, Ilya Zaytsev
  • Patent number: RE45879
    Abstract: An end of a light guide plate used for a liquid crystal display and a lighting unit, which is positioned on one side in a first direction, is provided with a depressed portion, and another end of the light guide plate, which is positioned on the other side in the first direction, is provided with a projecting portion. Using the depressed portion and the projecting portion, the light guide plate is placed in a predetermined position of a frame body. The depressed portion and the projecting portion are formed at positions opposite each other in the first direction, and the projecting portion is equal to or smaller than the depressed portion in size.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: February 2, 2016
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Nobutaka Urano, Yoichi Momose