By Reflection Patents (Class 359/263)
  • Patent number: 10345492
    Abstract: A system and method are provided for forming body structures including energy filters/shutter components, including energy/light directing/scattering layers that are actively electrically switchable. The filters or components are operable between at least a first mode in which the layers, and thus the presentation of the shutter components, appear substantially transparent when viewed from an energy/light incident side, and a second mode in which the layers, and thus the presentation of the energy filters or shutter components, appear opaque to the incident energy impinging on the energy incident side. The differing modes are selectable by electrically energizing, differentially energizing and/or de-energizing electric fields in a vicinity of the energy scattering layers, including electric fields generated between a pair of transparent electrodes sandwiching an energy scattering layer.
    Type: Grant
    Filed: August 7, 2017
    Date of Patent: July 9, 2019
    Inventors: Clark D Boyd, Bradbury R Face, Jeffrey D Shepard
  • Patent number: 10222550
    Abstract: Methods and devices for a plasmonic circuit are described. A planar plasmonic device is configured with a controlling gate structure and when coupled to a complementary plasmonic device, a switching circuit can be realized. Also, by varying the properties of the complementary plasmonic device, the circuit can also operate as an amplifier. By use of combinations of this plasmonic circuit element, more advanced circuits and logic functions can be arrived at.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: March 5, 2019
    Assignee: United States of America as represented by Secretary of the Navy
    Inventors: Joanna Ptasinski, Stephen Russell
  • Patent number: 10193099
    Abstract: A transformable device is provided. The transformable device includes an electro-active layer. A first electrode is disposed at a lower portion inside the electro-active layer. A second electrode is disposed at an upper portion inside the electro-active layer. In the transformable device according to an embodiment of the present disclosure, performance of the electrodes is suppressed from decreasing in spite of repeated operating and a life of the transformable device can be increased as compared with a case of forming electrodes outside an electro-active layer.
    Type: Grant
    Filed: October 2, 2017
    Date of Patent: January 29, 2019
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Seulgi Choi, Suseok Choi, Yongsu Ham, Taeheon Kim, Yongwoo Lee, Myungjin Lim
  • Patent number: 9983354
    Abstract: Methods and devices for a plasmonic circuit are described. A planar plasmonic device is configured with a controlling gate structure and when coupled to a complementary plasmonic device, a switching circuit can be realized. Also, by varying the properties of the complementary plasmonic device, the circuit can also operate as an amplifier. By use of combinations of this plasmonic circuit element, more advanced circuits and logic functions can be arrived at.
    Type: Grant
    Filed: April 10, 2008
    Date of Patent: May 29, 2018
    Assignee: The United States of America, as Represented by the Secretary of the Navy
    Inventors: Joanna Ptasinski, Stephen Russell
  • Patent number: 9915820
    Abstract: An optical system that includes a micro-mirror array optical modulator that can selectively modulate an incident light beam having a defined narrow spectral bandwidth to encode data thereon based on commands to an ON-state or an OFF-state of a micro-mirror. The micro-mirror array optical modulator can redirect light by diffraction and reflection to provide an output modulated light beam that exhibits a diffraction handedness dependent described by an arrangement of diffraction orders that depend in part on the narrow spectral bandwidth of light incident thereupon. An optical element has an optimized limiting aperture for defining portions of a modulated light beam that are blocked and remaining portions that are transmitted. An ON-state efficiency and an OFF-state contrast of an optically transmitted modulated light beam can depend on the diffraction handedness of the output modulated light beam relative to a size and a shape of the optimized limiting aperture.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: March 13, 2018
    Assignee: IMAX Theatres International Limited
    Inventors: Andrew F. Kurtz, Gary E. Nothhard
  • Patent number: 9878670
    Abstract: A variable reflectance exterior mirror reflective element suitable for use in a vehicular exterior rearview mirror assembly a front substrate and a rear substrate and an electrochromic medium disposed therebetween. A mirror reflector is disposed at a third surface of the rear substrate. A perimeter layer is disposed at a second surface of the front substrate proximate a perimeter edge and generally conceals the perimeter seal from view by a person viewing through the front substrate. Light that reflects off of the mirror reflector and passes through the electrochromic medium and the front substrate exhibits a substantially non-spectrally selective reflectance characteristic when no voltage is applied to the electrochromic medium. A display is disposed proximate a fourth surface of the rear at a light-transmitting portion of the mirror reflector established by laser ablation. The display is configured to be operated responsive to a blind spot detector of the vehicle.
    Type: Grant
    Filed: May 16, 2016
    Date of Patent: January 30, 2018
    Assignee: DONNELLY CORPORATION
    Inventors: Ian A. McCabe, Hamid Habibi, Niall R. Lynam, Donald L. Bareman
  • Patent number: 9841617
    Abstract: An optical device includes an active layer that includes at least two outer barriers and at least one coupled quantum well that is inserted between the at least two outer barriers. Each coupled quantum well includes at least three quantum well layers and at least two coupling barriers that are respectively provided between the at least three quantum well layers. Thicknesses of two quantum well layers disposed at opposite end portions of the at least three quantum well layers are less than a thickness of the other quantum well layer disposed between the two quantum well layers disposed at the opposite end portions. A bandgap of the two quantum well layers disposed at the opposite end portions may be higher than a bandgap of the other quantum well layer disposed between the two quantum well layers.
    Type: Grant
    Filed: September 22, 2014
    Date of Patent: December 12, 2017
    Assignees: Gwangju Institute of Science and Technology, Samsung Electronics Co., Ltd.
    Inventors: Yongchul Cho, Yongtak Lee, Byunghoon Na, Changyoung Park, Gunwu Ju, Yonghwa Park
  • Patent number: 9832161
    Abstract: A method, computer program product, and computer system for identifying attribute information of at least a first wearable associated with an outfit of a user. Information about an event may be received. An electronic message may be sent about whether at least a portion of the outfit is recommended for wearing at the event based upon, at least in part, the attribute information of at least the first wearable and the information about the event.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: November 28, 2017
    Assignee: International Business Machines Corporation
    Inventors: Lydia M. Do, Jenny S. Li, Pamela A. Nesbitt
  • Patent number: 9816501
    Abstract: A window has a pane of transparent material. A first set of microfluidic channels pass through a first area of the pane, and a second set of microfluidic channels pass through a second area of the pane. Microfluidic planes are in fluid communication with the first and second sets of microfluidic channels. A first pump is in fluid communication with the first set of microfluidic channels, and selectively moves a first fluid having a first level of opacity through the microfluidic planes via the first set of microfluidic channels. A second pump is in fluid communication with the second set of microfluidic channels, and selectively moves a second fluid having a second level of opacity through the microfluidic planes via the second set of microfluidic channels. Moving the second fluid into the microfluidic planes pushes the first fluid out of the microfluidic planes, thereby adjusting an opacity of the window.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: November 14, 2017
    Assignee: International Business Machines Corporation
    Inventors: Simon A. S. Briggs, James K. Hook, Hamish C. Hunt, Nicholas K. Lincoln
  • Patent number: 9812664
    Abstract: A transformable device is provided. The transformable device includes an electro-active layer. A first electrode is disposed at a lower portion inside the electro-active layer. A second electrode is disposed at an upper portion inside the electro-active layer. In the transformable device according to an embodiment of the present disclosure, performance of the electrodes is suppressed from decreasing in spite of repeated operating and a life of the transformable device can be increased as compared with a case of forming electrodes outside an electro-active layer.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: November 7, 2017
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Seulgi Choi, Suseok Choi, Yongsu Ham, Taeheon Kim, Yongwoo Lee, Myungjin Lim
  • Patent number: 9519199
    Abstract: A reflective structure with transparent and semi-transparent transmission regions and includes a first transparent layer with a textured area, a reflective layer disposed below the first transparent layer and having a portion that is substantially conformal with at least a first portion of the textured area, and a second transparent layer disposed below the reflective layer and having a portion with a refractive index that is substantially equal to a refractive index of the first transparent layer. The transparent transmission region is configured to transmit a portion of light without substantial deviation, and the semi-transparent transmission region is configured to transmit another portion of the light from the first transparent layer with substantial deviation.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: December 13, 2016
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Stephen Kitson, Adrian Geisow, Timothy Taphouse, Mario Ariosto Matranga, Gary George Wells, Jessica Louise Boland, Sarwat Amreen Baig
  • Patent number: 9287442
    Abstract: A solution for designing and/or fabricating a structure including a quantum well and an adjacent barrier is provided. A target band discontinuity between the quantum well and the adjacent barrier is selected to coincide with an activation energy of a dopant for the quantum well and/or barrier. For example, a target valence band discontinuity can be selected such that a dopant energy level of a dopant in the adjacent barrier coincides with a valence energy band edge for the quantum well and/or a ground state energy for free carriers in a valence energy band for the quantum well. Additionally, a target doping level for the quantum well and/or adjacent barrier can be selected to facilitate a real space transfer of holes across the barrier. The quantum well and the adjacent barrier can be formed such that the actual band discontinuity and/or actual doping level(s) correspond to the relevant target(s).
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: March 15, 2016
    Assignee: Sensor Electronic Technology, Inc.
    Inventors: Maxim S Shatalov, Remigijus Gaska, Jinwei Yang, Michael Shur, Alexander Dobrinsky
  • Patent number: 9287129
    Abstract: The disclosure relates to a method of fabricating a semiconductor device including forming a patterned hardmask layer over a substrate comprising a major surface. The method further includes forming a plurality of first trenches and a plurality of second trenches performed at an electrostatic chuck (ESC) temperature between about 90° C. to 120° C. in the substrate. The plurality of first trenches have a first width and extend downward from the substrate major surface to a first height, and the plurality of second trenches have a second width less than first width and extend downward from the substrate major surface to a second height greater than the first height.
    Type: Grant
    Filed: May 7, 2014
    Date of Patent: March 15, 2016
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Yu Chao Lin, Chih-Tang Peng, Shun-Hui Yang, Ryan Chia-Jen Chen, Chao-Cheng Chen
  • Patent number: 9182097
    Abstract: The invention relates to a diffuser (1) for use in a lighting device. The diffuser (1) comprises an at least partially transparent first layer (10) and an adjoining at least partially transparent second layer (20), the first layer being continuous and comprising a stretchable elastomer, the second layer being a segmented layer comprising a material with a high effective stiffness measured as the product of the thickness of the material and the elastic modulus of the material. The second layer (20) comprises a non-periodic pattern of segments (21a, 21b, 21c, 21d, 21e) having different dimensions. The diffuser is stretchable between a first position in which the first layer is in a non-stretched state and the segments of the second layer are arranged adjacent each other such as to form a substantially continuous layer, and a second position in which the first layer is stretched out and the segments of the second layer are separated from each other such that part of the first layer is exposed.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: November 10, 2015
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Wiebe Wagemans, Floris Maria Hermansz Crompvoets, Marc Matysek
  • Patent number: 8988755
    Abstract: A variable reflectance vehicular electro-optic rearview mirror reflective element assembly includes a front substrate and a rear substrate and a perimeter seal disposed therebetween. The front substrate has a first surface and a second surface that has a transparent electrically conductive coating disposed thereat. The rear substrate has a third surface and a fourth surface, with the third surface having a conductive coating disposed thereat. The perimeter seal spaces the front and rear substrates apart and forms an interpane cavity therebetween. The third surface conductive coating includes a plurality of layers, which includes a first layer of nickel chromium. The first layer of nickel chromium is overcoated with a silver or silver alloy layer, and the silver or silver alloy layer is overcoated with a second layer of nickel chromium, and the second layer of nickel chromium is overcoated with a reflective layer.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: March 24, 2015
    Assignee: Magna Mirrors of America, Inc.
    Inventor: Ian A. McCabe
  • Patent number: 8988759
    Abstract: An apparatus to modify an incident free space electromagnetic wave includes a block of an artificially structured material having an adjustable spatial distribution of electromagnetic parameters (e.g., ?, ?, ?, ?, and n). A controller applies control signals to dynamically adjust the spatial distribution of electromagnetic parameters in the material to introduce a time-varying path delay d(t) in the modified electromagnetic wave relative to the incident electromagnetic wave.
    Type: Grant
    Filed: July 26, 2010
    Date of Patent: March 24, 2015
    Inventors: Jeffrey A. Bowers, Roderick A. Hyde, Jordin T. Kare, Nathan Kundtz, Bruce Marshall McWilliams, John Brian Pendry, David Schurig, David R. Smith, Anthony F. Starr, Clarence T. Tegreene, Lowell L. Wood, Jr.
  • Publication number: 20150015834
    Abstract: A display apparatus may include a first substrate defined by a pixel region and a transmitting region adjacent to the pixel region, the pixel region emitting light in a first direction and the transmitting region transmitting external light; a second substrate that faces the first substrate and seals pixels defined on the first substrate; an optical filter arranged on a first side of the display apparatus through which light is emitted, the optical filter being configured to transmit circularly polarized light that rotates in a predetermined direction; and an optical reflectance conversion device arranged on a second side of the display apparatus, opposite the first side, the optical reflectance conversion device being configured to change a reflectance of the external light according to modes of operation of the display apparatus.
    Type: Application
    Filed: September 30, 2014
    Publication date: January 15, 2015
    Inventors: Sang-Hoon YIM, Young-Woo SONG, Jin-Koo CHUNG
  • Patent number: 8934164
    Abstract: A tunable optical filter is formed in the structure of an etalon. A thin electro-optic ceramic substrate is fixed between two end substrates. Each end substrate has an inner parallel surface toward said electro-optic ceramic substrate covered by an electrode layer and a reflecting layer. An adhesive which attaches the electro-optic ceramic substrate to each first and second end substrates has a consistency so as to avoid stress on the electro-optic ceramic substrate. A voltage imposed on the electro-optic ceramic substrate by the electrode layers on the inner parallel surfaces of the first and second end substrates effectively controls an optical distance between the reflective coating layers on the inner parallel surfaces of the first and second end substrates of the etalon structure. The electro-optic ceramic substrate is preferably PMN-PT ((1-x)Pb(Mg?Nb?)O3-x—PbTiO3) and no more than 160 ?m thick.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: January 13, 2015
    Assignee: Lightwaves 2020, Inc.
    Inventor: Jing-Jong Pan
  • Patent number: 8797627
    Abstract: An exterior rearview mirror assembly includes a variable reflectance mirror reflective element. A mirror reflector of the mirror reflective element includes a stack of thin films having at least two thin films. At least one of the thin films is formed of a material that has a specific resistivity of less than about 1×10?2 ohm·cm, and at least one of the thin films is a thin metal film. An electrochromic medium is disposed in an interpane cavity of the mirror reflective element and is bounded by a perimeter seal. A reflective perimeter layer is disposed at a second surface of a front substrate proximate a perimeter edge of the front substrate. The perimeter layer generally conceals the perimeter seal from view by a driver of the vehicle normally viewing the front substrate when the exterior rearview mirror assembly is mounted at the vehicle.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: August 5, 2014
    Assignee: Donnelly Corporation
    Inventors: Ian A. McCabe, Desaraju V. Varaprasad, Hamid Habibi, Niall R. Lynam
  • Publication number: 20140168743
    Abstract: Provided is a spatial light modulation element comprising a substrate; a reflecting mirror that moves from an initial position relative to the substrate; an elastic member that exerts an elastic force in a direction causing the reflecting mirror to return to the original position; a support body that supports the elastic member; and an elastic support member that elastically supports the support body relative to the substrate. In the spatial light modulation element, the support body may be supported at a distance from a surface of the substrate. The spatial light modulation element may further comprise a connecting portion that connects the support body to the substrate such that the support body can move along a surface direction of the substrate.
    Type: Application
    Filed: February 21, 2014
    Publication date: June 19, 2014
    Applicant: Nikon Corporation
    Inventor: Yoshihiko Suzuki
  • Patent number: 8754859
    Abstract: An electro-optic display comprises, in order, a light-transmissive electrically-conductive layer; a layer of a solid electro-optic material; and a backplane (162) bearing a plurality of pixel electrodes. A peripheral portion of the backplane extends outwardly beyond the layer of solid electro-optic material and bears a plurality of radiation generators (166) and a plurality of radiation detectors (168), the radiation generators and detectors together being arranged to act as a touch screen.
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: June 17, 2014
    Assignee: E Ink Corporation
    Inventors: Holly G. Gates, Robert W. Zehner, Russell J. Wilcox, Matthew J. Aprea
  • Patent number: 8736940
    Abstract: A method of forming a mirror reflective element assembly includes providing front and rear substrates and establishing a curved recess at a second surface of the front substrate and establishing a mirror reflector coating at the curved recess. An uncured seal is dispensed on a dispensing surface and has a first gap between terminal ends of said seal. The uncured seal is dispensed substantially around a principal reflecting region and a spotter region and defines a second gap between spaced apart portions of the uncured seal at an outboard region of the spotter region. A portion of the uncured seal is dispensed across the spotter region. The first gap provides a fill port for said mirror reflective element assembly when the front and rear substrates are mated together, and the second gap provides a vent port for the spotter cavity when the front and rear substrates are mated together.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: May 27, 2014
    Assignee: Magna Mirrors of America, Inc.
    Inventor: Donald S. Rawlings
  • Publication number: 20140063583
    Abstract: An infrared transmission large-area shutter is provided. The infrared transmission large-area shutter includes a first contact layer on a substrate, a plurality of stacks formed in a two-dimensional (2D) array pattern on a first region of the first contact layer, each stack comprising a lower reflection layer, an active layer, an upper reflection layer, and a second contact layer which are formed sequentially in this order on the first contact layer, a first electrode formed on the first contact layer, a plurality of second electrodes on the second contact layers, a first polymer layer that surrounds sidewalls of the plurality of stacks on the first contact layer, and a second polymer layer, which is transparent to infrared rays, to cover the second electrode on the second contact layer. A through hole corresponding to the plurality of stacks is formed in the substrate.
    Type: Application
    Filed: July 22, 2013
    Publication date: March 6, 2014
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Sang-hun LEE, Chang-young PARK, Jong-oh KWON, Yong-hwa PARK
  • Patent number: 8654432
    Abstract: An electro-optic device including: an electro-optical panel having an electro-optic substance held between an element substrate and an opposed substrate; and a dust-proof substrate bonded to a surface of the opposed substrate opposite from a surface thereof opposing the element substrate; wherein one of the opposed substrate and the dust-proof substrate is formed of a first material having a coefficient of linear expansion of a positive pole, and the other one of the opposed substrate and the dust-proof substrate is formed of a second material having a coefficient of linear expansion of a negative pole.
    Type: Grant
    Filed: January 20, 2011
    Date of Patent: February 18, 2014
    Assignee: Seiko Epson Corporation
    Inventor: Tomoaki Miyashita
  • Publication number: 20140002880
    Abstract: An optical network component is provided comprising a semiconductor optical amplifier with an input and an output, wherein the input is connected to a light source, wherein the output is connected to an amplitude modulator, wherein the semiconductor optical amplifier converts an amplitude modulated signal from the amplitude modulator to a phase modulated signal and provides the phase modulated signal at its output. Also, a transmitter comprising at least one such optical network component is suggested.
    Type: Application
    Filed: December 22, 2010
    Publication date: January 2, 2014
    Applicant: NOKIA SIEMENS NETWORKS OY
    Inventors: Erich Gottwald, Harald Rohde
  • Publication number: 20130335671
    Abstract: In embodiments of active reflective surfaces, an imaging structure includes a circuit control layer that controls pixel activation to emit light. A reflective layer of the imaging structure reflects input light from an illumination source. An active color conversion material that is formed on the reflective layer converts the input light to the emitted light. The active color conversion material can be implemented as a phosphorus material or quantum dot material that converts the input light to the emitted light, and in embodiments, the active color conversion material is laminated directly on the reflective layer.
    Type: Application
    Filed: June 18, 2012
    Publication date: December 19, 2013
    Inventors: Rod G. Fleck, Andreas G. Nowatzyk, David D. Bohn
  • Publication number: 20130329166
    Abstract: A decorative panel (1) comprises a transparent front substrate (2) having a foreground image printed thereon, the foreground image having varying transparency across its area. Behind the foreground image, is at least one layer (3) of optically reflective or absorptive material which has a reflectance or absorptance that is changeable in response to an external stimulus and which transmits incident light that is not reflected or absorbed. Behind the at least on layer of reflective material, is a background layer (4) on which light transmitted by the at least one layer of optically reflective or absorptive material is incident and which is not transparent.
    Type: Application
    Filed: November 2, 2011
    Publication date: December 12, 2013
    Applicant: VERSATILE TECHNOLOGIES LTD
    Inventors: Assaf Poliakine, Amir Ben-Shalom, Christopher John Hughes, David Coates
  • Publication number: 20130314653
    Abstract: A method includes applying at least one medium to a substrate with a printing device to form a symbol. The perceived reflectance properties of the symbol are provided by an amount of the at least one medium applied to the substrate.
    Type: Application
    Filed: August 2, 2013
    Publication date: November 28, 2013
    Applicant: Adobe Systems Incorporated
    Inventors: Wojciech Matusik, Jinwei Gu
  • Publication number: 20130293519
    Abstract: This disclosure provides systems, methods and apparatus for an electromechanical systems display device. In one aspect, a grey scale electromechanical systems display device may include a reflector assembly disposed on a support dielectric layer, a substrate, and an absorber assembly. The absorber assembly may include a metal layer. The absorber assembly may be configured to move to a first position defining a first cavity between the absorber assembly and the substrate such that the device reflects a white light. The absorber assembly also may be configured to move to a second position defining a second cavity between the absorber assembly and the reflector assembly such that the device substantially does not reflect light.
    Type: Application
    Filed: May 3, 2012
    Publication date: November 7, 2013
    Applicant: QUALCOMM MEMS Technologies, Inc.
    Inventors: Jian J. Ma, John Hyunchul Hong, Bing Wen, Edward Keat Leem Chan
  • Patent number: 8576472
    Abstract: A device representing a reflector, for example an evanescent reflector or a multilayer interference reflector, with at least one reflectivity stopband is disclosed. A medium with means of generating optical gain is introduced into the layer or several layers of the reflector. The optical gain spectrum preferably overlaps with the spectral range of the reflectivity stopband. This reflector is attached to multilayer passive cavity structure made of semiconducting, and/or dielectric, and/or metallic materials with the inserted tools of achieving wavelength selection of the optical modes. For example, volume Bragg gratings, distributed feedback gratings or patterns, using of vertical optical cavities surrounded by multilayer Bragg reflectors can be applied. The optical modes of the passive optical cavity partially penetrate into the gain region of the reflector.
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: November 5, 2013
    Inventor: Nikolay Ledentsov
  • Patent number: 8559090
    Abstract: A tunable optical filter is formed in the structure of an etalon. A thin electro-optic ceramic substrate is fixed between two end substrates. Each end substrate has an inner parallel surface toward said electro-optic ceramic substrate covered by an electrode layer and a reflecting layer. An adhesive which attaches the electro-optic ceramic substrate to each first and second end substrates has a consistency so as to avoid stress on the electro-optic ceramic substrate. A voltage imposed on the electro-optic ceramic substrate by the electrode layers on the inner parallel surfaces of the first and second end substrates effectively controls an optical distance between the reflective coating layers on the inner parallel surfaces of the first and second end substrates of the etalon structure. The electro-optic ceramic substrate is preferably PMN-PT ((1-x)Pb(Mg?Nb?)O3-x—PbTiO3) and no more than 160 ?m thick.
    Type: Grant
    Filed: July 31, 2008
    Date of Patent: October 15, 2013
    Assignee: Lightwaves 2020, Inc.
    Inventor: Jing Jong Pan
  • Publication number: 20130250393
    Abstract: A system may include a spherical retroreflector that reflects incident light back in substantially the same direction as a light source; and a surface of the spherical retroreflector including a light modulator that modulates incident light from the light source in response to a stimulus and reflects a modulated light, wherein the light modulator is a variably reflecting backing of the spherical retroreflector.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 26, 2013
    Applicant: The Boeing Company
    Inventors: Ty Aaby Larsen, Henry V. Fletcher, III
  • Patent number: 8492863
    Abstract: Optical modulator having wide bandwidth based on Fabry-Perot resonant reflection is disclosed. The optical modulator includes: a bottom Distributed Bragg Reflector (DBR) layer; a top DBR layer including at least one layer, and a modified layer; and an active layer disposed between bottom and top DBR layers, wherein the at least one layer includes at least one pair of a first refractive index layer having a first refractive index and a second refractive index layer having a second refractive index, the modified layer includes at least one pair of a third refractive index layer having a third refractive index and a fourth refractive index layer having a fourth refractive index, the third and the fourth refractive indexes being different, and at least one of the third and the fourth refractive index layers has a second optical thickness that is not ?/4 or that is not an odd multiple thereof.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: July 23, 2013
    Assignees: Samsung Electronics Co., Ltd., Gwangju Institute of Science and Technology
    Inventors: Yong-chul Cho, Yong-tak Lee, Yong-hwa Park, Byung-hoon Na, Kwang-mo Park, Chang-soo Park
  • Patent number: 8488228
    Abstract: Interferometric modulators and methods of making the same are disclosed. In one embodiment, an interferometric modulator includes an interferometric reflector having a first reflective surface, a second reflective surface, and an optical resonant layer defined by the first reflective surface and the second reflective surface. The interferometric reflector can be configured to transmit a certain spectrum of light at a transmission peak wavelength such that the interferometric modulator has a diminished reflectance of light at the transmission peak wavelength.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: July 16, 2013
    Assignee: QUALCOMM MEMS Technologies, Inc.
    Inventors: Marek Mienko, Jonathan Charles Griffiths
  • Publication number: 20130170011
    Abstract: A transmissive image modulator for allowing image modulation over a wide bandwidth with multiple Fabry-Perot resonant modes and multiple absorption modes is provided. The transmissive image modulator includes a lower reflection layer; an active layer disposed on the lower reflection layer, including multiple quantum well layers and multiple barrier layers; an upper reflection layer disposed on the active layer; and at least one micro-cavity layer disposed in at least one of the lower and upper reflection layer. The active layer and the at least one micro-cavity layer have thicknesses of a multiple of ?/2, where ? is a resonant wavelength.
    Type: Application
    Filed: December 12, 2012
    Publication date: July 4, 2013
    Applicants: GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY, SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Samsung Electronics Co., Ltd., Gwangju Institute Of Science And Technology
  • Patent number: 8432600
    Abstract: A mirror assembly is provided having a mirror for use in connection with a vehicle, such as a military combat vehicle. An electrically activatable material is positioned at the mirror of the vehicle. The electrically activatable material prevents the reflectivity of visible light off the mirror when the electrically activatable material is switched to a light-blocking state. A coupling device electrically couples the electrically activatable material to an electrical power source. An actuation device is adapted to switch the electrically activatable material of the vehicle mirror assembly to the light-blocking state in response to user operation such that the electrically activatable material prevents the reflectivity of visible light off the vehicle mirror to reduce the observability of the vehicle mirror.
    Type: Grant
    Filed: July 30, 2009
    Date of Patent: April 30, 2013
    Assignee: Control Solutions LLC
    Inventors: Alyn Brown, James Wiff
  • Patent number: 8400703
    Abstract: An optical switch for switching between transmission and total reflection of incident light 101 applied to electro-optical crystal 104 by applying an electric field to electro-optical crystal 104 to thereby change the refractive index of electro-optical crystal 104 includes a plurality of electrodes 105 disposed in electro-optical crystal 104 to provide electrode assembly 106 for applying the electric field to electro-optical crystal 104. Electro-optical crystal 104 has a refractive index changing portion (not shown) whose refractive index is changed by the electric field applied by electrode assembly 106, the refractive index changing portion enclosing electrode assembly 106 in its entirety. The refractive index changing portion has a flat refractive index boundary.
    Type: Grant
    Filed: June 18, 2008
    Date of Patent: March 19, 2013
    Assignee: NEC Corporation
    Inventors: Eiji Akiyama, Fujio Okumura, Osamu Ishibashi
  • Publication number: 20130027651
    Abstract: In one or more embodiments, barriers for reflective pixels electrodes of display devices and methods are disclosed. In one such embodiment, a reflective spatial light modulator for a display device has a plurality of reflective pixel electrodes. Each reflective pixel electrode may include a conductor, a tantalum containing barrier over the conductor, and a conductive reflector over the conductive barrier.
    Type: Application
    Filed: July 27, 2011
    Publication date: January 31, 2013
    Inventor: Mark Meldrim
  • Patent number: 8351208
    Abstract: An electro-optical device may include: an electro-optical panel, a holding member that includes a main body part arranged to surround the periphery of the electro-optical panel, and a holding part protruded from the main body part and holding the electro-optical panel, and a heat radiating member that is disposed opposing the electro-optical panel through an opening of the holding member from the opposite side of the light incident plane of the electro-optical panel.
    Type: Grant
    Filed: February 11, 2011
    Date of Patent: January 8, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Hidekazu Hirabayashi, Yoshitaka Hama
  • Patent number: 8345343
    Abstract: A reflective display device including: a substrate; a reflective layer on the substrate and configured to reflect light incident on the reflective layer; a color filter layer on the reflective layer; and an optical shutter layer on the color filter layer. Each pixel of a plurality of pixels of the reflective display device includes a plurality of sub-pixels and each sub-pixel includes the substrate, the reflective layer, the color filter layer, and the optical shutter layer, and for each pixel, the color filter layer includes a plurality of color filter elements corresponding to colors respectively obtained by the plurality of sub-pixels.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: January 1, 2013
    Assignee: Samsung Electronics Co., Lid.
    Inventors: Jung-Woo Kim, Byong-Gwon Song, Hyuk-Jun Kwon
  • Patent number: 8320036
    Abstract: The present invention provides an apparatus that includes a waveguide and one or more pixels deployed adjacent the top surface of the waveguide which contains TIR light therein. Each pixel includes a deformable active layer having a first conductor and a driver electronics layer having a second conductor. The driver electronics layer is deployed in spaced-apart relation to the active layer and opposite the waveguide. In a quiescent state of a pixel, the active layer is in contact or near contact with the top surface of the waveguide so as to optically couple light out via FTIR (i.e., pixel's ON state). To actuate the pixel, the electronics layer is configured to selectively apply an electrical potential difference to the second conductor thereby causing the active layer to move away from the top surface so as to prevent the optical coupling of light out of the waveguide (i.e., pixel's OFF state).
    Type: Grant
    Filed: August 24, 2009
    Date of Patent: November 27, 2012
    Assignee: Rambus Inc.
    Inventors: Kevin J. Derichs, Carey King, Daniel K. Van Ostrand, Berry Tod Cox, Reed J. Killion
  • Patent number: 8314985
    Abstract: A high-speed optical modulator based on Surface Plasmon-Polariton (SPP) at the hetero-junction of a metal-insulator-semiconductor (MIS) tunneling diode and including a phase-matching optical element, such as a prism or gold-lattice structure, is described. An investigation using the coupled mode theory shows that the applied bias across the hetero-junction changes the optical reflectance of an optically coupled MIS tunneling diode, such as a prism-coupled MIS tunneling diode or a gold lattice-coupled MIS tunneling diode, while the modulation efficiency achievable of the device depends on the thickness of the metal film used to construct the tunneling diode.
    Type: Grant
    Filed: October 28, 2009
    Date of Patent: November 20, 2012
    Assignee: Boise State University
    Inventor: Wan Kuang
  • Publication number: 20120287495
    Abstract: A variable reflectance vehicular electro-optic rearview mirror reflective element assembly includes a front substrate and a rear substrate and a perimeter seal disposed therebetween. The front substrate has a first surface and a second surface that has a transparent electrically conductive coating disposed thereat. The rear substrate has a third surface and a fourth surface, with the third surface having a conductive coating disposed thereat. The perimeter seal spaces the front and rear substrates apart and forms an interpane cavity therebetween. The third surface conductive coating includes a plurality of layers, which includes a first layer of nickel chromium. The first layer of nickel chromium is overcoated with a silver or silver alloy layer, and the silver or silver alloy layer is overcoated with a second layer of nickel chromium, and the second layer of nickel chromium is overcoated with a reflective layer.
    Type: Application
    Filed: May 11, 2012
    Publication date: November 15, 2012
    Applicant: MAGNA MIRRORS OF AMERICA, INC.
    Inventor: Ian A. McCabe
  • Patent number: 8295710
    Abstract: The invention describes a modulator for the quadrature modulation of an optical carrier signal with an I- and a Q-portion, where a first optical multimode interferometer (MMI) splits the optical carrier signal into four branches and that in pairs of branches the I-portion and the Q-portion respectively is modulated with a Mach-Zehnder-Structure and a second optical multimode interferometer (MMI) combines the modulated I-portion and Q-portion again to one quadrature modulated optical output signal (OS).
    Type: Grant
    Filed: July 6, 2009
    Date of Patent: October 23, 2012
    Assignee: Nokia Siemens Networks Oy
    Inventor: Winter Marcus
  • Patent number: 8294972
    Abstract: A display device may include a substrate, a thin film layer formed on the substrate and/or having a light absorptance that varies according to an electric field applied to the thin film layer, and/or electrodes disposed to apply the electric field to the thin film layer and/or configured to change the electric field applied to the thin film layer.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: October 23, 2012
    Assignee: Samsung Electronics Co, Ltd.
    Inventor: Hyun-jong Chung
  • Publication number: 20120249929
    Abstract: A display panel includes: a reflective display panel including: two substrates disposed so as to face each other; transparent electrodes formed over each of the two substrates; and a reflective material layer, sealed between the two substrates, including a reflection state which changes based on a voltage applied between the transparent electrodes; a light absorption layer disposed on a first surface side of the reflective display panel; and a cut-off filter layer disposed on a second surface side of the reflective display panel, wherein, in a visible wavelength range, a wavelength at which reflection from the transparent electrodes is smallest overlaps a dominant reflective wavelength of the reflective material layer in a reflective state, and wherein the cut-off filter layer transmits light in a wavelength range which is reflected by the reflective material layer in the reflective state and absorbs light reflected by the transparent electrodes.
    Type: Application
    Filed: February 28, 2012
    Publication date: October 4, 2012
    Applicant: FUJITSU LIMITED
    Inventors: Makoto FUKUDA, Hirokazu Aritake, Kenichi Ashikawa
  • Publication number: 20120218619
    Abstract: Provided is an optical body capable of arbitrarily and quickly controlling the optical characteristics of incident light. A refractive index variable layer (8) formed of PLZT or other material and a magneto-optical material layer (9) formed of garnet or other material are provided side by side between a first reflective layer (3) and a second reflective layer (5). If linearly polarized light is made incident from the side of the first reflective layer (3), the incident light interacts with the magneto-optical material layer (9) and is converted into a right-circularly polarized light component and a left-circularly polarized light component. A very small retardation occurring between both the right- and left-circularly polarized light components is amplified through multiple reflections between the pair of reflective layers (3, 5) and is controlled according to a controlled refractive index of the refractive index variable layer (8).
    Type: Application
    Filed: October 4, 2010
    Publication date: August 30, 2012
    Applicant: National University Corporation TOYOHASHI UNIVERSITY OF TECNNOLOGY
    Inventors: Mitsuteru Inoue, Taichi Goto, Takashi Yamaguchi
  • Publication number: 20120206788
    Abstract: A spatial light modulator includes an array of elements to modulate light in accordance with image data. The modulator has a display panel having first and second surfaces arranged adjacent to the array of elements such that the second surface is directly adjacent the array of elements to allow a viewer to view an image produced by modulation of light. The modulator may also include a light source to provide light to the display panel and illumination dots on the first surface of the display panel to reflect light from the source to the array of elements.
    Type: Application
    Filed: April 26, 2012
    Publication date: August 16, 2012
    Applicant: QUALCOMM MEMS TECHNOLOGIES, INC.
    Inventor: Jeffrey B. Sampsell
  • Patent number: 8223423
    Abstract: An array of two or more tunable electro-optical reflecting elements where the phase response of one or more elements may be adjusted by a variety of approaches including, but not limited to: a liquid crystal superstrate, schottky contact(s), ultra-violet radiation pulses, and illumination of photoconductive substrates. Methods and apparatus for direct and/or adaptive control of phase response via the above approaches are also discussed.
    Type: Grant
    Filed: August 28, 2009
    Date of Patent: July 17, 2012
    Assignee: Lockheed Martin Corp.
    Inventors: Thomas E Haberfelde, Edit L. Braunstein, Glenn Boreman, James Ginn, David Shelton, Gene D. Tener, Andrew H. Hawkins
  • Patent number: 8194303
    Abstract: Disclosed are an optical image modulator, an optical apparatus including the same, and methods of manufacturing and operating the optical image modulator. The optical image modulator includes a light amount increasing unit increasing the amount of forward light emission of an electric-optical unit. The light amount increasing unit includes a first reflector reflecting light, which travels from the inside of the electric-optical unit toward the optical-electric unit, to the electric-optical unit. The light amount increasing unit may further include a second light reflector reflecting light, which passes through the optical-electric unit without optical-electric conversion, to the optical-electric unit.
    Type: Grant
    Filed: November 10, 2009
    Date of Patent: June 5, 2012
    Assignees: Samsung Electronics Co., Ltd., Gwangju Institute of Science and Technology
    Inventors: Yong-hwa Park, Jae-hyung Jang, Yong-chul Cho, Chang-soo Park, Byeong-ha Lee