Illuminating Or Display Apparatus Patents (Class 385/901)
  • Patent number: 9017793
    Abstract: A light diffusion sheet usable, for example, in backlight units, includes a transparent substrate layer, and a light diffusion layer overlaid on a front face of the substrate layer. The light diffusion layer includes resin beads and a resin binder, the resin beads being provided as monodisperse beads having a mean particle size of 1.5 ?m or greater and 5 ?m or less. A weight ratio of the monodisperse beads to the binder is 2.5 or greater and 3 or less, and an amount of the overlaid light diffusion layer is 3 g/m2 or greater and 10 g/m2 or less. An acrylic resin may be used as the substrate polymer of the monodisperse beads and binder. A coefficient of variation of particle size distribution of the monodisperse beads is preferably equal to or less than 0.2. Advantageously, a gravure coating method is employed for forming the light diffusion layer.
    Type: Grant
    Filed: January 4, 2006
    Date of Patent: April 28, 2015
    Assignee: Jiro Corporate Plan Inc.
    Inventor: Minoru Yoshida
  • Patent number: 8989535
    Abstract: In embodiments of a multiple waveguide imaging structure, an imaging structure includes a first waveguide for see-through viewing of an environment at a first field of view, and includes a second waveguide for see-through viewing of the environment at a second field of view. The first and second waveguides each include a polarizing beam splitter to reflect light that enters at a first polarization orientation angle in the respective first and second waveguides, and the polarizing beam splitters pass through the light that enters at a second polarization orientation angle. The imaging structure also includes a polarization switch to rotate the polarization of the light through the first and second polarization orientation angles.
    Type: Grant
    Filed: June 4, 2012
    Date of Patent: March 24, 2015
    Assignee: Microsoft Technology Licensing, LLC
    Inventor: Steven John Robbins
  • Patent number: 8971680
    Abstract: A method is provided for controlling the collimation of light from a backlight top surface. A backlight device includes a first waveguide and a transparent top film overlying the first waveguide top surface. A plurality of bubble structures is formed in the top film bottom surface, having a refractive index less than a first waveguide medium. A plurality of lenses overlies the top film top surface, where each lens is aligned overlying a corresponding gap (W) between bubble structures. The method forms a maximum angle (?) of light propagation through the first waveguide medium. In response to the values W and H (bubble structure height), light, having the maximum angle (?) of light propagation, is reflected off the bubble structure sides, through total internal reflection, into the top film. The method collimates in a vertical direction, orthogonal to the horizontal direction, light exiting the top film through the lenses.
    Type: Grant
    Filed: June 25, 2012
    Date of Patent: March 3, 2015
    Assignee: Sharp Laboratories of America, Inc.
    Inventor: Jiandong Huang
  • Patent number: 8897612
    Abstract: Light-coupling systems and methods that employ light-diffusing optical fiber are disclosed. The systems include a light source and a light-diffusing optical fiber optically coupled thereto. The light-diffusing optical fiber has a core, a cladding and a length. At least a portion of the core comprises randomly arranged voids configured to provide substantially spatially continuous light emission from the core and out of the cladding along at least a portion of the length. A portion of the light-diffusing optical is embedded in an index-matching layer disposed adjacent a lower surface of a transparent sheet. Light emitted by the light-diffusing optical fiber is trapped within the transparent sheet and index-matching layer by total internal reflection and is scattered out of the upper surface of the transparent sheet by at least one scattering feature thereon.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: November 25, 2014
    Assignee: Corning Incorporated
    Inventor: Stephan Lvovich Logunov
  • Patent number: 8845165
    Abstract: A light source for a crystal lamp has a light guide pillar, a light-emitting element, and a linear micro structure. The light guide pillar has a top surface, a bottom surface and a side surface, and the light-emitting element is disposed next to the bottom surface. The linear micro structure is formed on and surrounds the side surface, and the emitting light beams of the light-emitting element are reflected by or refracted through the linear micro structure to allow the linear micro structure to function as a thin-lined light source surrounding the light guide pillar.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: September 30, 2014
    Assignees: Dongguan Masstop Liquid Crystal Display Co., Ltd., Wintek Corporation
    Inventors: Zhi-Ting Ye, Kuo-Jui Huang
  • Patent number: 8840294
    Abstract: The present invention provides a side-light backlight module with assisting solar light source and which comprises a side-light source; a waveguide having an incident surface facing the side-light source and an emitting surface; an optical film set arranged on top of the waveguide and facing the emitting surface; and an assisting light source directing collected solar light into the incident surface of the waveguide. With the provision of the assisting light source, the solar light can be used as an assisting light source making the backlight module and the liquid crystal display device made therefrom become more environmental friendly.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: September 23, 2014
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventors: Che-Chang Hu, Hu He
  • Patent number: 8801253
    Abstract: Illumination devices include a light source including a substantially planar light-emitting surface and an optical rod or optical taper disposed proximate to the substantially planar light-emitting surface to optically couple the optical rod and the substantially planar light-emitting surface.
    Type: Grant
    Filed: October 15, 2008
    Date of Patent: August 12, 2014
    Assignee: Optim LLC
    Inventors: Robert J. Krupa, Thomas V. Root
  • Patent number: 8791829
    Abstract: The present invention relates to a method and an arrangement for visual indication of an electrical quantity, being one or several of power, current and/or voltage through a conductor. The arrangement comprises a substantially wire shaped illuminator and a controller which controls at least one illumination characteristic of said illuminator with respect to said electrical feature.
    Type: Grant
    Filed: March 6, 2006
    Date of Patent: July 29, 2014
    Assignee: The Interactive Institute II AB
    Inventors: Anton Gustafsson, Magnus Gyllenswärd, Christina Öhman, Sara Ilstedt-Hjelm
  • Patent number: 8724942
    Abstract: Light-coupling systems and methods that employ light-diffusing optical fiber are disclosed. The systems include a light source and a light-diffusing optical fiber optically coupled thereto. The light-diffusing optical fiber has a core, a cladding and a length. At least a portion of the core comprises randomly arranged voids configured to provide substantially spatially continuous light emission from the core and out of the cladding along at least a portion of the length. A portion of the light-diffusing optical is embedded in an index-matching layer disposed adjacent a lower surface of a transparent sheet. Light emitted by the light-diffusing optical fiber is trapped within the transparent sheet and index-matching layer by total internal reflection and is scattered out of the upper surface of the transparent sheet by at least one scattering feature thereon.
    Type: Grant
    Filed: October 10, 2011
    Date of Patent: May 13, 2014
    Assignee: Corning Incorporated
    Inventors: Stephan Lvovich Logunov, Paul John Shustack
  • Patent number: 8702291
    Abstract: An illuminatable apparatus includes a fabric sheet containing fiber optic rods interwoven with fabric threads. The ends of the fiber optic rods are bundled together to form a ferrule which is removably insertable into a holder carrying a light source and a power source. An outer ferrule can be fixed over the sleeve-like ferrule or robust applications. The holder may be removably attached to articles of clothing. The illuminatable fabric sheet can be used as an optical bandage, in a medical cast, in a negative pressure device, or in a bed pad/sheet, or in a therapeutic brace support.
    Type: Grant
    Filed: January 4, 2011
    Date of Patent: April 22, 2014
    Inventor: John Stephan
  • Patent number: 8687937
    Abstract: A light-guide module includes a light-guide strip having opposite first and second ends, a light-entry surface disposed at the first end, a light-exit surface extending between the first and second ends, and first and second working surfaces disposed parallel to each other and extending between the first and second ends. One of the first and second working surfaces defines a light-scatter zone and includes a plurality of micro-scatter structures that are disposed within the light-scatter zone and that configure the light-scatter zone with a light-scattering ability that varies from the first end to the second end. The light-guide module also includes a reflecting element disposed to reflect light that exits from the light-guide strip via the first and second working surfaces back into the light-guide strip via the first and second working surfaces, respectively.
    Type: Grant
    Filed: May 10, 2011
    Date of Patent: April 1, 2014
    Assignee: Genius Electronic Optical Co., Ltd.
    Inventors: Ming-Sen Tsao, Kuo-Wen Chang
  • Patent number: 8672486
    Abstract: This document describes various techniques for implementing a wide field-of-view projector. A wide field-of-view projector may include a spatial light modulator configured to inject light rays into an input wedge. The input wedge acts to output the light rays with an increased fan-out angle. In an embodiment, the spatial light modulator is controlled to inject light rays into the input wedge effective to project an image from the surface of an output wedge that is positioned proximate, and receives light rays with an increased fan-out angle from, the input wedge.
    Type: Grant
    Filed: July 11, 2011
    Date of Patent: March 18, 2014
    Assignee: Microsoft Corporation
    Inventor: Adrian Travis
  • Patent number: 8670088
    Abstract: An optical sheet is provided. The optical sheet includes: a light-transmissive base; and an optical functional layer provided to at least one surface of the base, in which the base is composed of a stack of transmissive sheets bonded while placing an adhesive material layer in between.
    Type: Grant
    Filed: April 16, 2007
    Date of Patent: March 11, 2014
    Assignee: Sony Corporation
    Inventors: Eiji Ohta, Toru Abiko, Hirokazu Odagiri, Katsuhiro Doi, Makoto Aoki, Satoko Asaoka, Miki Sudo, Yu Andrew Chakchung
  • Patent number: 8628255
    Abstract: A lighting system for generating an illumination product comprises an excitation source, blue/UV LED, operable to generate excitation radiation and a remotely located phosphor, photo luminescent material. Excitation radiation is guided from the excitation source to the phosphor by a waveguiding medium, the waveguiding medium being configured such that the distance the radiation travels from the excitation source to the phosphor layer is at least one centimeter in length. The UV/blue excitation source provides excitation radiation to the phosphor(s), causing the phosphor(s) to photo luminesce, and it may also provide a component of the final illumination product. The configuration of the waveguide allows a greater flexibility in lighting system configurations, such as hanging lighting fixtures, desk lighting fixtures, floor standing lighting fixtures, desk lamps, track lighting, spot lighting, accent lighting, lighting panels, inspection lamps and endoscopes.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: January 14, 2014
    Assignee: Intematix Corporation
    Inventor: Yi-Qun Li
  • Patent number: 8630518
    Abstract: A system and method are provided for using bubble structures to control the extraction of light from a waveguide top surface. The method determines a maximum angle (?) of light propagation through a waveguide medium relative to a first horizontal direction parallel to a waveguide top surface. A plurality of bubble structures is provided having a refractive index less than the waveguide medium. The bubble structures have a base, and sides formed at an acute angle upwards with respect to the base. The bubble structure bases are separated by gap (W), have a height (H), and have a top separated from a waveguide top surface by a space (h). The method varies the gap (W), the height (H), and the space (h). In response, the intensity of light extraction at even the maximum angle (?) of light propagation, can be controlled from the waveguide top surface.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: January 14, 2014
    Assignee: Sharp Laboratories of America, Inc.
    Inventors: Jiandong Huang, Apostolos T. Voutsas
  • Patent number: 8616709
    Abstract: In a projection display apparatus in which a laser beam source and an optical engine are connected together through an optical fiber, safety is improved against temperature rise in the optical fiber and its periphery. A projection display apparatus includes a temperature sensor 4 provided on the end portion, of the side of an optical engine 6, of an optical fiber group 1 for connecting a laser beam source 5 and the optical engine 6 to each other, in which, by detecting temperature and informing to a controlling unit 71 for controlling the laser beam source 5, when temperature rise exceeding a set value having been set previously is detected, the controlling unit 71 is made to control so as to decrease or stop output from the laser beam source 5.
    Type: Grant
    Filed: June 12, 2009
    Date of Patent: December 31, 2013
    Assignee: Mitsubishi Electric Corporation
    Inventor: Shinji Yagyu
  • Patent number: 8615151
    Abstract: A lightguide arrangement including a substantially thin, lightguide for transporting and coupling light. At least one light source is coupled to the lightguide. A plurality of micro-optic surface relief forms are arranged on the lightguide. The lightguide is configured to produce one or more active indicative and/or decorative illumination effects via interaction between the one or more light sources and the plurality of micro-optic surface relief forms. A keypad assembly including the lightguide and uses of lightguide constructions.
    Type: Grant
    Filed: November 14, 2007
    Date of Patent: December 24, 2013
    Assignee: Modilis Holdings LLC
    Inventor: Kari Rinko
  • Patent number: 8602561
    Abstract: An image projection system having a laser projector that projects two differently polarized images on a display region is disclosed. The laser projector enables viewing the two differently polarized images as a three-dimensional image. The image projection system includes a planar lightwave circuit-based beam combiner that enables multiple colors of laser light having different polarization modes to be combined in a single output beam that is scanned over the display region at video rates to produce the two polarized images.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: December 10, 2013
    Assignee: Octrolix BV
    Inventors: Edwin Jan Klein, Ronald Dekker
  • Patent number: 8594472
    Abstract: A microstructure optical adapter or tip according to the present disclosure may incorporate precision micro structure optical components engaging the input or output end of light energy delivery devices for customized light delivery of the light energy. The incorporation of precision micro structure optical components in injection molded plastic or glass parts will allow for inexpensive modification of the output light while also serving to protect the end of the illumination device. The micro structure optical components may also be incorporated in an adapter to tailor the light energy to the subsequent device.
    Type: Grant
    Filed: September 6, 2012
    Date of Patent: November 26, 2013
    Assignee: Invuity, Inc.
    Inventors: Alex Vayser, Kenneth B. Trauner
  • Patent number: 8588574
    Abstract: A backlight includes a lightguide, a light source disposed with respect to the lightguide to introduce light into the lightguide and a turning film. Optical structures are formed in one of an output surface and a back surface of the lightguide. The optical structures are arranged to extract light from the lightguide. A back reflector is disposed adjacent the back surface. The optical structures are formed to include a varying pattern arranged to mask non-uniformities in the output of the lightguide.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: November 19, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: Mark E. Gardiner, Sanford Cobb, Jr., Kenneth A. Epstein, Wade D. Kretman
  • Patent number: 8588564
    Abstract: A confocal optical system comprising a scanning fiber is provided. The scanning fiber is a single-mode fiber of which a first end is shaped as a curved surface. The scanning fiber transmits illumination light to the first end. The illumination light is emitted toward an observation area. The illumination light emanates from the first end. The illumination light emanates from the first end striking a target area within the observation area. The first end receives at least one of reflected light and fluorescence from the target area. The reflected light is the illumination light reflected from the target area. The fluorescence is induced at the target area by illumination from the illumination light.
    Type: Grant
    Filed: May 10, 2010
    Date of Patent: November 19, 2013
    Assignee: Hoya Corporation
    Inventor: Satoshi Karasawa
  • Patent number: 8548289
    Abstract: Embodiments of a display comprising pixels formed from suitably tethered deformable membrane-based MEMS subsystems are provided that include the means to dynamically alter the in-plane tension, and thus the effective spring constant, of the deformable membrane being ponderomotively propelled between active and inactive optical states, said dynamic alteration being effected by exploiting transverse piezoelectric properties of the deformable membranes. Manipulating the spring constant can reduce the actuation force required to turn pixels on, thus significantly reducing the operational voltages for the display composed of an array of such subsystems. Since display power rises with the square of the pixel drive voltage, such architectures give rise to more power efficient display systems.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: October 1, 2013
    Assignee: Rambus Delaware LLC
    Inventors: Martin G. Selbrede, Daniel K. Van Ostrand
  • Patent number: 8545081
    Abstract: An edge-lit backlight device is disclosed in the present disclosure. The edge-lit backlight device comprises a light guide plate, light sources and a backplate. The light guide plate comprises two wedged plate portions and a rectangular plate portion, the two wedged plate portions are disposed at two sides of the rectangular plate portion respectively, and the wedged plate portions and the rectangular plate portion each comprise a light incident surface and a bottom surface. The light sources are disposed adjacent to the light incident surfaces of the wedged plate portions and the rectangular plate portion respectively. A liquid crystal display (LCD) is also disclosed in the present disclosure. The edge-lit backlight device and the LCD of the present disclosure are simple in structure, allow for regional control functions and can dissipate heat generated by the light sources in a timely and efficient way.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: October 1, 2013
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Yi-Cheng Kuo, Gege Zhou
  • Patent number: 8540410
    Abstract: A submerged planar illumination device for providing specified, substantially uniform distribution of light in liquid from one or few light sources such as LED. The device comprises a light guiding plate having an entrance edge to which the LEDs are fixed, a collimator for redirecting the light and forming substrate light which is coupled to a light guiding plate having at least one light extracting surface. Light extracting surface are optionally on both large surfaces of the light guiding plate. Each light extracting surface is covered with a pattern of light extracting and scattering elements capable of collecting, scattering and extracting light propagating in the light guiding plate into the liquid ambient medium in which the device is submerged. A cover, sealed to the entrance edge of the light guiding plate, protects the light emitting element from the liquid ambient medium.
    Type: Grant
    Filed: May 11, 2010
    Date of Patent: September 24, 2013
    Inventors: Leon Eisen, Jacob Stern, Abraham Rotem, Yoav Evron
  • Patent number: 8538217
    Abstract: A lighting system for generating an illumination product comprises an excitation source, blue/UV LED, operable to generate excitation radiation and a remotely located phosphor, photo luminescent material. Excitation radiation is guided from the excitation source to the phosphor by a waveguiding medium, the waveguiding medium being configured such that the distance the radiation travels from the excitation source to the phosphor layer is at least one centimeter in length. The UV/blue excitation source provides excitation radiation to the phosphor(s), causing the phosphor(s) to photo luminesce, and it may also provide a component of the final illumination product. The configuration of the waveguide allows a greater flexibility in lighting system configurations, such as hanging lighting fixtures, desk lighting fixtures, floor standing lighting fixtures, desk lamps, track lighting, spot lighting, accent lighting, lighting panels, inspection lamps and endoscopes.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: September 17, 2013
    Assignee: Intematix Corporation
    Inventor: Yi-Qun Li
  • Patent number: 8508447
    Abstract: A pixel includes a primary element and a secondary element. At least a portion of the primary element is deformable between two positions. In one position, the light source is reflected such that the observer observes a dark pixel. In the other position, the light is reflected such that the observer observes a bright pixel. Gray levels of light are viewable by varying between the two positions.
    Type: Grant
    Filed: November 19, 2007
    Date of Patent: August 13, 2013
    Assignee: Microsoft Corporation
    Inventors: Anna Pyayt, Gary K. Starkweather, Michael J. Sinclair
  • Patent number: 8441602
    Abstract: Improved apparatus and method for collecting and directing light from a source via a light guide and modulated display assembly in an efficient manner through the design and use of prismatic optical structures, diffusers and/or light redirectors.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: May 14, 2013
    Assignee: Pixtronix, Inc.
    Inventors: Je Hong Kim, Jignesh Gandhi
  • Patent number: 8437587
    Abstract: A method of one aspect may include actuating a cantilevered optical fiber by mechanically deforming a piezoelectric actuator. An electrical signal generated as a result of mechanical deformation of the piezoelectric actuator may also be detected.
    Type: Grant
    Filed: July 25, 2007
    Date of Patent: May 7, 2013
    Assignee: University of Washington
    Inventor: Charles David Melville
  • Patent number: 8427604
    Abstract: A display device includes a light source, an optical waveguide, a light-extracting portion, a liquid crystal dispersion layer and a drive circuit. The optical waveguide has two ends to guide light from one of the two ends to the other end. The light is emitted by the light source. The light-extracting portion is provided to a side face of the optical waveguide. The liquid crystal dispersion layer is included in the light-extracting portion and includes liquid crystal droplets whose mean diameter is 100 nm or less. The drive circuit applies a voltage to the light-extracting portion to generate an electric field in the liquid crystal dispersion layer so that the light transmitting through the optical waveguide is scattered to be extracted.
    Type: Grant
    Filed: December 28, 2010
    Date of Patent: April 23, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yutaka Nakai, Tsuyoshi Hioki
  • Patent number: 8408776
    Abstract: A backlight module includes a light guide plate, a light source disposed at a side of the light guide plate, a diffuser sheet positioned over the light guide plate but not directly contacting the light guide plate, and a light mixing space positioned between the light guide plate and the diffuser sheet so that light emitted from the light guide plate efficiently mixes in the light mixing space before entering the diffuser sheet and being emitted out of the backlight module.
    Type: Grant
    Filed: November 12, 2009
    Date of Patent: April 2, 2013
    Assignee: AU Optronics Corp.
    Inventor: Pang-Hsuan Liu
  • Patent number: 8371735
    Abstract: Provided is a multi-layer light guide apparatus. Various optical paths are formed as a light source emits light into the apparatus. Main structure of the apparatus includes a body and a micro-structured layer. The body has a first layer with first refractive index (n1) and a second layer with second refractive index (n2). The first layer has a first critical angle (?C1). An interface critical angle (?C12) is formed between the associated first layer and second layer. The light then outputs as the light propagates through the layers. The micro-structured layer is formed on a side of the body. It features: n1<n2;0<|?C12??C1|?35°; A third layer with a third index of refraction (n3) is further included. A second interface critical angle (?C23) is formed between the second layer and the third layer. It features: n1<n2<n3;?C23>?C12;0<|?C12??C1|?35°.
    Type: Grant
    Filed: September 3, 2010
    Date of Patent: February 12, 2013
    Assignee: Entire Technology Co., Ltd.
    Inventors: Yan Zuo Chen, Chung-Hung Chien, Wen-Feng Cheng, Hao-Xiang Lin
  • Patent number: 8358896
    Abstract: A flexible and optionally highly elastic waveguide capable of propagating and emitting light is disclosed. The flexible waveguide comprises a flexible material having a surface and an end, wherein a first portion of the light is emitted through at least a portion of the surface of the flexible waveguide, and a second portion of the light is emitted through the end. The flexible waveguide can be used, for example as an area illuminator for many applications. Additionally disclosed is a clothing device for providing illumination. The clothing device comprises clothing (or even optionally a sheet) and a light source for providing light. In one embodiment the clothing device comprises the flexible waveguide.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: January 22, 2013
    Assignee: Oree, Advanced Illumination Solutions Inc.
    Inventors: Eran Fine, Noam Meir
  • Patent number: 8355610
    Abstract: A primary waveguide and a coupling waveguide are arranged so a user can view light from a forward scene through the primary waveguide. An image source generates an image which is diffractively coupled into the primary waveguide and internally reflected to an exit area for diffraction towards the user. Light from the forward looking scene is diffracted into the primary waveguide to be internally reflected and coupled to a image intensifier tube assembly. The image intensifier tube assembly enhances light from the forward looking scene and drives the image source such that an image of the enhanced light is overlaid on light from a forward scene at exit area.
    Type: Grant
    Filed: October 7, 2008
    Date of Patent: January 15, 2013
    Assignee: Bae Systems PLC
    Inventor: Michael David Simmonds
  • Patent number: 8351744
    Abstract: Embodiments of optical collimators are disclosed. For example, one disclosed embodiment comprises an optical waveguide having a first end, a second end opposing the first end, a viewing surface extending at least partially between the first end and the second end, and a back surface opposing the viewing surface. The viewing surface comprises a first critical angle of internal reflection, and the back surface is configured to be reflective at the first critical angle of internal reflection. Further, a collimating end reflector comprising a faceted lens structure having a plurality of facets is disposed at the second end of the optical waveguide.
    Type: Grant
    Filed: April 23, 2012
    Date of Patent: January 8, 2013
    Assignee: Microsoft Corporation
    Inventors: Adrian Travis, Timothy Large, Neil Emerton, Steven Bathiche
  • Patent number: 8351750
    Abstract: A flexible and optionally highly elastic waveguide capable of propagating and emitting light is disclosed. The flexible waveguide comprises a flexible material having a surface and an end, wherein a first portion of the light is emitted through at least a portion of the surface of the flexible waveguide, and a second portion of the light is emitted through the end. The flexible waveguide can be used, for example as an area illuminator for many applications. Additionally disclosed is a clothing device for providing illumination. The clothing device comprises clothing (or even optionally a sheet) and a light source for providing light. In one embodiment the clothing device comprises the flexible waveguide.
    Type: Grant
    Filed: July 28, 2008
    Date of Patent: January 8, 2013
    Inventors: Eran Fine, Noam Meir
  • Patent number: 8346048
    Abstract: A illumination device comprises a light guide having a first end for receiving light and configured to support propagation of light along the length of the light guide. A turning microstructure is disposed on a first side of the light guide configured to turn light incident on the first side and to direct the light out a second opposite side of the light guide, wherein the turning microstructure comprises a plurality of indentations. A cover is physically coupled to the light guide and disposed over the turning microstructure. An interlayer is between the cover and the light guide, wherein the interlayer physically couples the cover to the light guide. A plurality of open regions is between the interlayer and the plurality of indentations. Various embodiments include methods of coupling the cover to the light guide while preserving open regions between the cover and plurality of indentations.
    Type: Grant
    Filed: May 28, 2009
    Date of Patent: January 1, 2013
    Assignee: Qualcomm Mems Technologies, Inc.
    Inventors: Ion Bita, Gang Xu, Kollengode S. Narayanan, Russell W. Gruhlke, Marek Mienko, Lai Wang
  • Patent number: 8346036
    Abstract: A confocal optical system comprising a scanning fiber is provided. The scanning fiber is a single-mode fiber of which a first end is shaped as a curved surface. The scanning fiber transmits illumination light to the first end. The illumination light is emitted toward an observation area. The illumination light emanates from the first end. The illumination light emanates from the first end striking a target area within the observation area. The first end receives at least one of reflected light and fluorescence from the target area. The reflected light is the illumination light reflected from the target area. The fluorescence is induced at the target area by illumination from the illumination light.
    Type: Grant
    Filed: May 10, 2010
    Date of Patent: January 1, 2013
    Assignee: Hoya Corporation
    Inventor: Satoshi Karasawa
  • Patent number: 8331755
    Abstract: A multi-axial light guide module comprises a light guide, a light-emitting unit, a display unit and a light-guiding unit. The light guide has a light-emitting portion connects to a curved portion, wherein the light-emitting portion has at least two axial light-emitting planes to generate at least two axial light-emitting effects; the display unit has a first axial display layer corresponding to a first axial light-emitting plane, and a second axial display layer corresponding to a second axial light-emitting plane; the light-guiding unit is disposed on the light emitting portion, so as to enhance the light-emitting efficiency of the light-emitting portion; and, through the display unit and the light-guiding unit, the light-emitting and display effects of the multi-axial light-emitting plane on the light-emitting portion can be improved. Thereby, users may conveniently see the light-emitting display from different axial planes, in order to achieve the purposes of message prompt and indication.
    Type: Grant
    Filed: September 24, 2008
    Date of Patent: December 11, 2012
    Assignee: Inventec Appliances Corp.
    Inventor: Szu-Tsung Chang
  • Patent number: 8313224
    Abstract: A light emitting fixture carried by a ceiling, wherein the fixture includes an electrical light source which emits generated light in response to an electrical signal and an optical fiber with light emitting and light collecting ends. The optical fiber emits collected light from the light emitting end in response to receiving incident light at the light receiving end.
    Type: Grant
    Filed: July 16, 2008
    Date of Patent: November 20, 2012
    Inventor: Calvin W. Moyer
  • Patent number: 8277106
    Abstract: The present invention provides a lighting device, comprising a first light guide adapted to guide light and output the light in a first direction; a second light guide adapted to guide light and output the light in another, second direction; a dividing structure adapted to receive light from a light source and guide the light into the first light guide and into the second light guide, wherein the dividing structure comprises controllable dividing means for guiding a first percentage of the light from the light source into the first light guide, and a second percentage of the light from the light source into the second light guide.
    Type: Grant
    Filed: May 8, 2008
    Date of Patent: October 2, 2012
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Ramon Pascal Van Gorkom, Lingli Wang, Marcellinus Petrus Carolus Michael Krijn
  • Patent number: 8264622
    Abstract: This invention relates to film layer which is suitable for use in a light guide plate and methods of forming said film layer and light guide plate. The invention also relates to the light guide plate and light guide devices made therefrom. The film and light guide plate are suitable for use in a range of applications, particularly in connection with the backlighting of displays, for example, liquid crystal displays.
    Type: Grant
    Filed: November 21, 2008
    Date of Patent: September 11, 2012
    Assignee: ITI Scotland Limited
    Inventor: James Gourlay
  • Patent number: 8259240
    Abstract: High-resolution, scalable multi-touch sensing display systems and processes based on frustrated total internal reflection employ an optical waveguide that receives light, such as infrared light, that undergoes total internal reflection and an imaging sensor that detects light that escapes the optical waveguide caused by frustration of the total internal reflection due to contact by a user. The optical waveguide when fitted with a compliant surface overlay provides superior sensing performance, as well as other benefits and features. The systems and processes described provide true multi-touch (multi-input) and high-spatial and temporal resolution capability due to the continuous imaging of the frustrated total internal reflection that escapes the entire optical waveguide. Among other features and benefits, the systems and processes are scalable to large installations.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: September 4, 2012
    Assignee: Perceptive Pixel Inc.
    Inventor: Jefferson Y. Han
  • Patent number: 8248560
    Abstract: Improved apparatus and method for collecting and directing light from a source via a light guide and modulated display assembly in an efficient manner through the design and use of prismatic optical structures, diffusers and/or light redirectors.
    Type: Grant
    Filed: October 24, 2008
    Date of Patent: August 21, 2012
    Assignee: Pixtronix, Inc.
    Inventors: Je Hong Kim, Jignesh Gandhi
  • Patent number: 8186889
    Abstract: Disclosed is an information processing device with lighting function that realizes reduced power consumption and cost reductions. The optical connecting member 17 flexibly connects between a light guide plate 14 of a displaying part side and a light guide plate 21 of a key operating part side, thereby guiding light emitted from a white light LED 13 of a displaying part side to key operating part side.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: May 29, 2012
    Assignee: Hitachi Chemical Co., Ltd.
    Inventors: Hiroshi Masuda, Atsushi Takahashi, Yasushi Sugimoto, Tomoaki Shibata
  • Patent number: 8189973
    Abstract: Embodiments of optical collimators are disclosed. For example, one disclosed embodiment comprises an optical waveguide having a first end, a second end opposing the first end, a viewing surface extending at least partially between the first end and the second end, and a back surface opposing the viewing surface. The viewing surface comprises a first critical angle of internal reflection, and the back surface is configured to be reflective at the first critical angle of internal reflection. Further, a collimating end reflector comprising a faceted lens structure having a plurality of facets is disposed at the second end of the optical waveguide.
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: May 29, 2012
    Assignee: Microsoft Corporation
    Inventors: Adrian Travis, Timothy Large, Neil Emerton, Steven Bathiche
  • Patent number: 8177381
    Abstract: The present invention provides an integrated backlight illumination assembly for an LCD display comprising, a plurality of solid state light sources for providing a point light source and a plurality of light guide films having light redirecting areas provided between the plurality of solid state light sources for redirecting and spreading the point light sources to a uniform plane of light. The invention further provides at least one polymer diffusion bar covering said solid state light sources and spacer collar rings comprising an optical spacer, collar section and an anchoring feature, wherein the spacer collar rings are located around a perimeter of the diffusion bar.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: May 15, 2012
    Assignee: SKC Haas Display Films Co., Ltd.
    Inventors: Qi Hong, Herong Lei, Robert P. Bourdelais
  • Patent number: 8155497
    Abstract: A method of manufacturing a fiber-based electric apparatus includes providing an elongate, flexible fiber core and layering an electric device on the fiber core.
    Type: Grant
    Filed: June 6, 2011
    Date of Patent: April 10, 2012
    Assignee: The Regents of The University of Michigan
    Inventors: Max Shtein, Kevin P. Pipe
  • Patent number: RE43874
    Abstract: A light switch is disclosed to turn on or off the light signal in a light channel by means of the response of piezoelectric material to the electric field of light in the light channel. The LIGHT TRIGGERED LIGHT SWITCH is a light switch that is actuated by light of sufficient power. Light of different frequencies may travel in a light channel together without hindering each other, as long as the channel is the right size for both frequencies of light. The light that actuates the switch may be a different frequency than the light signal that is switched on or off. Fiber optic communication channels are among the channels that these switches may be used for.
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: December 25, 2012
    Assignee: Galtronics Corporation Ltd.
    Inventor: Gary Neal Poovey
  • Patent number: RE43959
    Abstract: A multi-lamp arrangement for optical systems comprising two lamps or more (10, 15) and a collective light guide (58), where each lamp is positioned such as to transmit light (20) into respective light guides (36, 46) that are both optically connected to the collective light guide (58). In one embodiment, one of the lamps is optically connected to the collective light guide by means of a mirror (38)-and-prism (40) arrangement and an intermediate light guide (30) and an intermediate mirror (32)-and-prism (34) arrangement. The invention also comprises an augmented color modulator (62) with a number of color fields, where the number of identical color fields are equal to the number of lamps. The invented multi-lamp system will produce a flux level that is equal to or better than known systems but with fewer lamps, thus yielding reduced material cost, manufaturing cost and operating costs, reduced power consumption and reduced product temeperature.
    Type: Grant
    Filed: April 23, 2008
    Date of Patent: February 5, 2013
    Assignee: projectiondesign as
    Inventors: Odd Ragnar Andersen, Kjell E. Olsen
  • Patent number: RE44227
    Abstract: A backlight unit for a display device includes a mold frame and a light guide panel. The mold frame includes a groove having at least one rounded corner. The light guide panel is on the mold frame and includes a light guide projection in the groove, having at least one rounded corner corresponding to the at least one rounded corner of the mold frame groove.
    Type: Grant
    Filed: November 8, 2001
    Date of Patent: May 21, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventor: Ik-Soo Lee