Changing Bulk Optical Parameter Patents (Class 359/240)
  • Patent number: 10353264
    Abstract: A layered structure for a variable transmittance optical filter includes a transparent conductive electrode and a substrate layer. The transparent conductive electrode includes a charge injection layer that has one or more of gold, molybdenum, palladium, reduced graphene oxide, amorphous indium gallium zinc oxide (a-IGZO), platinum, nickel, ruthenium, rhodium, asmium, selenium, tellurium, graphene, and carbon nanotubes. The substrate layer includes a transparent substrate and is positioned relative to the transparent conductive electrode such that light passing through the transparent conductive electrode passes through the substrate layer.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: July 16, 2019
    Assignee: SWITCH MATERIALS INC.
    Inventors: Duhane Lam, Glen R. Bremner, Jonathan R. Sargent, Jeremy G. Finden, Peter A. Von Hahn
  • Patent number: 10345491
    Abstract: A system and method are provided for forming energy filter layers or shutter components, including energy/light directing/scattering layers that are actively electrically switchable. The energy filters or shutter 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: 10207645
    Abstract: A vehicle includes: an image display mirror including a first polarizing plate, a half mirror, and an image display apparatus in the stated order from a viewer side; and a second polarizing plate, in which: the image display mirror is arranged so as to b viewable by a driver of the vehicle; the half mirror is configured to be oriented in different directions between when an image is displayed on the image display apparatus and when the image is not displayed thereon; the second polarizing plate is arranged so that light transmitted through the second polarizing plate reaches a first polarizing plate side of the image display mirror when the image is displayed on the image display apparatus; and the vehicle is configured so that the transmitted light of the second polarizing plate reaching the image display mirror is prevented from being transmitted through the first polarizing plate.
    Type: Grant
    Filed: February 1, 2016
    Date of Patent: February 19, 2019
    Assignee: NITTO DENKO CORPORATION
    Inventors: Katsunori Takada, Tadayuki Kameyama, Yoshitsugu Kitamura, Keisuke Kimura, Hiroki Kuramoto
  • Patent number: 10109920
    Abstract: An antenna is provided including an electromagnetic metasurface. The electromagnetic characteristics of the antenna are dynamically tunable.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: October 23, 2018
    Assignee: The Johns Hopkins University
    Inventors: David B. Shrekenhamer, Joseph A. Miragliotta, Kenneth R. Grossman
  • Patent number: 10101505
    Abstract: A vortex beam device includes: a metal reflector, a low refractive index layer, and multiple elliptical dielectric elements. The low refractive index layer located on the metal reflector. The multiple elliptical dielectric elements are embedded in the low refractive index layer and arranged in an array, major axes of the multiple elliptical dielectric elements are parallel or coincident. The multiple elliptical dielectric elements have a same thickness. A thickness of the low refractive index layer is greater than a thickness of the elliptical dielectric element. An outer surface of each elliptical dielectric element is flush with an outer surface of the low refractive index layer. A refractive index of the low refractive index layer is less than a refractive index of the elliptical dielectric element.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: October 16, 2018
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Jian Wang, Jing Du, Jifang He
  • Patent number: 9976910
    Abstract: An infrared detector includes a source region and a drain region which are formed on a semiconductor substrate, an infrared ray absorbing film as a gate insulating film formed on the semiconductor substrate, and a gate electrode which is formed of a transparent electrode for infrared rays on the gate insulating film, in which, when a predetermined voltage is applied to the gate electrode, a predetermined current flows between the source region and the drain region.
    Type: Grant
    Filed: November 24, 2014
    Date of Patent: May 22, 2018
    Assignee: Sony Corporation
    Inventor: Kojiro Yagami
  • Patent number: 9791701
    Abstract: A display device comprising a first image display device comprising a light guide plate, a dimmer, and a light control device. The light control device is configured to identify a start time of change in quantity of light received by the display device, and control transmissivity of the dimmer based on quantity of light received by the display device, after a predetermined amount of time after the start time has elapsed.
    Type: Grant
    Filed: January 23, 2014
    Date of Patent: October 17, 2017
    Assignee: Sony Corporation
    Inventors: Masayuki Ato, Akio Machida
  • Patent number: 9766407
    Abstract: The inventive configurable optical fiber polarization mode coupler is capable of providing a low-loss, high-coupling coefficient interface with high accuracy and easy alignment between a plurality of optical fibers (or other optical devices) with a first channel-to-channel spacing, and an optical device having a plurality of closely-spaced waveguide interfaces with a second channel-to-channel spacing, where each end of the optical fiber coupler array is configurable to have different channel-to-channel spacing, each matched to a corresponding one of the first and second channel-to-channel spacing, and that are preferably optimized for use with photonic integrated circuits, such as coupling to dense optical input/output interfaces, wafer-level testing, etc.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: September 19, 2017
    Assignee: Chiral Photonics, Inc.
    Inventors: Gary Weiner, Victor Il'ich Kopp, Jonathan Singer, Daniel Neugroschl, Jongchul Park, Mitchell Wlodawski
  • Patent number: 9726915
    Abstract: Disclosed is a method to modify the electrical conductivity of an organic and/or molecular material including the steps of providing a reflective or photonic structure and of placing the organic and/or molecular material in or on the structure. The method also includes providing a structure (1) which has an electromagnetic mode which is by design, or can be made by way of adjustment or tuning, resonant with a transition in the organic and/or molecular material (2) and controlling, in particular enhancing, the mobility of the charge carriers, and thus the electrical current, in the organic and/or molecular material (2), by way of strongly coupling the material (2) to the local electromagnetic vacuum field and exploiting the formation of extended macroscopic states in the material.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: August 8, 2017
    Assignees: UNIVERSITE DE STRASBOURG, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, CENTRE INTERNATIONAL DE RECHERCHE AUX FRONTIERES DE LA CHIMIE
    Inventors: James A. Hutchison, Cyriaque Genet, Thomas W. Ebbesen, Paolo Samori, Emanuele Orgiu, Jino George, Francesco Stellacci
  • Patent number: 9608721
    Abstract: A method of calculating a transmitter and dispersion penalty for predicting optical link signal quality includes providing an optical link; capturing an averaged eye, using an optical test signal sequence to drive the transmitter with an oscilloscope receiver having an oscilloscope bandwidth as available; and from the averaged eye, capturing histograms A1; capturing a non-averaged eye using an optical test signal sequence to drive the transmitter, and from the non-averaged eye, capturing histograms B1; de-convolving histograms A1 from histograms B1; filtering waveform from step 1), convolve the filtered waveform from step 4) with the estimate of the noise from 3); and calculating “soft” TDP based on the probability distribution function.
    Type: Grant
    Filed: May 1, 2015
    Date of Patent: March 28, 2017
    Assignee: MELLANOX TECHNOLOGIES DEMARK APS
    Inventor: Piers James Geoffrey Dawe
  • Patent number: 9451235
    Abstract: Transmission of stereo image data may be performed between devices, where a source device receives E-EDID from a sink device via DDC of an HDMI cable. This E-EDID contains information on 3D image data transmission modes supportable by the sink device. Based on information on 3D image data transmission modes from the sink device, the source device selects a predetermined transmission mode from among the 3D image data transmission modes supportable by the sink device. The source device transmits 3D image data in the selected transmission mode to the sink device. The source device transmits information on the transmission mode for the 3D image data, to the sink device by using an AVI InfoFrame packet or the like. The sink device processes the 3D image data received from the source device in accordance with its transmission mode, thereby obtaining left and right eye image data.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: September 20, 2016
    Assignee: Sony Corporation
    Inventors: Yasuhisa Nakajima, Kazuyoshi Suzuki, Akihiko Tao, Shigehiro Kawai
  • Patent number: 9432640
    Abstract: An illumination module includes a light source, a color wheel, an actuator, and a reflective unit. The light source is for providing a light beam with a first wavelength band. The color wheel has an outer annular section and an inner annular section. The color wheel includes a wavelength conversion segment disposed at the outer annular section and a plurality of filter segments disposed at the inner annular section. The wavelength conversion segment is configured to convert a portion of the light beam with the first wavelength band into a light beam with a second wavelength band, and has at least one wavelength conversion material including yttrium aluminum garnet (YAG) phosphors. The filter segments are respectively configured to filter desired wavelength bands of the light beam. The reflective unit is configured to reflect the light beam passing through the outer annular section to the inner annular section.
    Type: Grant
    Filed: August 15, 2014
    Date of Patent: August 30, 2016
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Keh-Su Chang, Yen-I Chou, Chi Chen, Jau-Shiu Chen, Meng-Han Liu
  • Patent number: 9311558
    Abstract: A method for identifying a pattern in an image. In a first step the image is normalized to a binary matrix. A binary vector is subsequently generated from the binary matrix. The binary vector is filtered with a sparse matrix to a feature vector using a matrix vector multiplication wherein the matrix vector multiplication determines the values of the feature vector by applying program steps which are the result of transforming the sparse matrix in program steps including conditions on the values of the binary vector. Lastly, from the feature vector, a density of probability for a predetermined list of models is generated to identify the pattern in the image.
    Type: Grant
    Filed: April 16, 2014
    Date of Patent: April 12, 2016
    Assignee: I.R.I.S.
    Inventors: Frederic Collet, Jordi Hautot, Michel Dauw, Pierre De Muelenaere, Olivier Dupont, Gunter Hensges
  • Patent number: 9246296
    Abstract: An optical apparatus comprising an optical source for providing output light for providing input signal light can comprise a pump source for pumping a four wave mixing (FWM) process with light pulses (“FWM pump light”); a FWM element in optical communication with said pump source, said FWM element configured for hosting the FWM process to generate, responsive to the FWM pump light, pulses of FWM signal light and FWM idler light having different wavelengths; and a laser or amplifier optical device comprising a gain material for providing optical gain at a gain wavelength via a process of stimulated emission responsive to optical pumping with pump light, said laser or amplifier optical device in optical communication with said optical source and receiving one of the FWM signal light and the FWM idler light as input signal light having the gain wavelength for optically seeding with input signal light the laser or amplifier optical device.
    Type: Grant
    Filed: November 3, 2014
    Date of Patent: January 26, 2016
    Assignee: Fianium Ltd
    Inventors: John Redvers Clowes, Michael Yarrow
  • Patent number: 9114663
    Abstract: The present invention is directed to a display device which comprises two layers of insulating substrate, at least the substrate on the viewing side is transparent, an array of display cells sandwiched between the two layers of substrate, a writing means, and optionally an erasing means to magnetically or electrically erase the image. The display cells are filled with a dispersion of magnetic particles which may be charged or non-charged. The display of the invention eliminates the use of the transparent conductor film, such as ITO, on the viewing side. Therefore, the displays of this invention are more cost effective, more flexible and durable and capable of higher image contrast ratio and higher reflectance in the Dmin area.
    Type: Grant
    Filed: August 9, 2011
    Date of Patent: August 25, 2015
    Assignee: E Ink California, LLC
    Inventors: Ching-Shon Ho, Jerry Chung, Paul Gendler, Rong-Chang Liang, HongMei Zang
  • Patent number: 9069181
    Abstract: An optical imaging system includes a birefringent element, a light modulating element, and a polarizer element. The birefringent element is configured for decomposing un-polarized light into first linear polarized light and second linear polarized light under different refractive indexes to respectively form a first focal length and a second focal length in the optical imaging system. The light modulating element is configured for modulating a state of polarization of the first and second linear polarized light in response to control signals. The polarizer element is configured for filtering out one of the modulated first and second linear polarized light for creating a single image.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: June 30, 2015
    Assignee: General Electric Company
    Inventors: Kevin George Harding, Guiju Song, Tao Li, Dongmin Yang, Jie Han, Zirong Zhai
  • Patent number: 9001410
    Abstract: The present invention relates to a process for manufacturing an electrochromic article, comprising the following successive steps: (a) deposition of a layer of an electrochromic compound on the surface of a transparent or translucent electroconductive substrate; (b) deposition of a redox agent, which is a reducing agent or an oxidizing agent for the electrochromic compound, on the layer of electrochromic compound at a multitude of discrete points or areas thereon; (c) bringing the layer of electrochromic compound, deposited in step (a), and the redox agent, deposited in step (b), into contact with a liquid electrolyte for a time long enough to allow the electrochromic compound to be reduced or oxidized by the redox agent; and (d) elimination of the electrolyte by rinsing and/or drying, the layer of electrochromic compound being a porous layer of open porosity and/or an electrically conductive layer.
    Type: Grant
    Filed: August 16, 2011
    Date of Patent: April 7, 2015
    Assignee: Essilor International (Compagnie Generale d'Optique)
    Inventors: Claudine Biver, Sandrine Duluard
  • Patent number: 9001409
    Abstract: A cover for use in connection with a mirror of a vehicle is provided. The cover is provided with a lens having an electrically activatable material. The lens is positioned in front of the vehicle mirror. The electrically activatable material blocks visible light directed towards the vehicle mirror such that the electrically activatable material prevents the visible light from being reflected off of the vehicle mirror when the electrically activatable material is set to a light inhibiting state. A device that holds the lens is securable to the vehicle mirror. The electrically activatable material of the lens is configured to be switched to the light inhibiting state in response to user operation such that the lens prevents reflection of the visible light off of the vehicle mirror to reduce observability of the vehicle mirror.
    Type: Grant
    Filed: July 18, 2012
    Date of Patent: April 7, 2015
    Assignee: Control Solutions LLC
    Inventors: Alyn Brown, James Wiff
  • 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: 20150077830
    Abstract: A portable electronic device is provided, including a housing, a display module, an optical element and a switchable layer. The housing has a first surface and an opaque layer disposed under the first surface, the opaque layer having a first aperture and a second aperture. The display module is disposed under the first surface and overlapped with the first aperture. The optical element is disposed under the opaque layer. The switchable layer is disposed between the optical element and the second aperture and overlapping the second aperture, wherein the switchable layer is capable of being switched between a substantially opaque state and a substantially transparent state. The substantially opaque state prevents viewing of the optical element through the switchable layer and the substantially transparent state allows viewing of the optical element through the switchable layer.
    Type: Application
    Filed: September 18, 2013
    Publication date: March 19, 2015
    Applicant: HTC CORPORATION
    Inventors: Ming-Tien LIN, Chun-Ta LIN, Chih-Jen HU
  • Patent number: 8983814
    Abstract: A laser device, having an optical cavity containing a gain medium, a total reflectance reflector positioned within the optical cavity, and a partial reflectance reflector positioned within the optical cavity in a juxtaposed relationship to the total reflectance reflector. The topology of the reflectors are defined by a convergent reflector topology function that converges light emitted within the optical cavity to a laser beam that exits the optical cavity through the partial reflectance reflector by a series of reflections between the total reflectance reflector and the partial reflectance reflector. The laser beam emitted from the optical cavity has a predefined pattern for a given convergent reflector topology.
    Type: Grant
    Filed: December 9, 2013
    Date of Patent: March 17, 2015
    Inventor: Hilbrand Harlan-Jacob Sybesma
  • Publication number: 20150062686
    Abstract: An apparatus is described that selectively absorbs electromagnetic radiation. The apparatus includes a conducting surface, a dielectric layer formed on the conducting surface, and a plurality of conducting particles distributed on the dielectric layer. The dielectric layer can be formed from a material and a thickness selected to yield a specific absorption spectrum. Alternatively, the thickness or dielectric value of the material can change in response to an external stimulus, thereby changing the absorption spectrum.
    Type: Application
    Filed: April 16, 2013
    Publication date: March 5, 2015
    Applicant: Duke University
    Inventors: David R. Smith, Antoine Moreau, Cristian Ciraci, Jack J. Mock
  • Publication number: 20150063739
    Abstract: Optical devices that include one or more structures fabricated from polar-dielectric materials that exhibit surface phonon polaritons (SPhPs), where the SPhPs alter the optical properties of the structure. The optical properties lent to these structures by the SPhPs are altered by introducing charge carriers directly into the structures. The carriers can be introduced into these structures, and the carrier concentration thereby controlled, through optical pumping or the application of an appropriate electrical bias.
    Type: Application
    Filed: October 24, 2014
    Publication date: March 5, 2015
    Applicant: Naval Research Laboratory
    Inventors: James Peter Long, Joshua D. Caldwell, Jeffrey C. Owrutsky, Orest J. Glembocki
  • Patent number: 8970934
    Abstract: An optical system in a video probe assembly includes a plurality of lenses configured to refract separate linearly polarized rays under different refractive indexes to form a plurality of different focal lengths. The optical system includes at least one light modulating element that modulates a polarization state of the linearly polarized rays passing through the at least one light modulating element in response to a control signal. The optical system includes a polarizer element that filters out some of the modulated linearly polarized rays passing through the polarizer element. A method of inspecting a target with an optical system of a video probe assembly is also provided.
    Type: Grant
    Filed: June 20, 2013
    Date of Patent: March 3, 2015
    Assignee: General Electric Company
    Inventor: Dongmin Yang
  • Patent number: 8964275
    Abstract: A display apparatus may include a first substrate having one or more unit pixel regions defined and including a driving thin film transistor, a second substrate disposed on the first substrate and facing the first substrate, and a color absorbing layer disposed on the first substrate.
    Type: Grant
    Filed: November 1, 2011
    Date of Patent: February 24, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Min-Woo Kim, Soo-Min Baek, Il-Nam Kim, Jae-Kyoung Kim, Won-Sang Park
  • Publication number: 20150015930
    Abstract: Nanophononic metamaterials and methods for reducing thermal conductivity in at least partially crystalline base material are provided, such as for thermoelectric energy conversion. In one implementation, a method for reducing thermal conductivity through an at least partially crystalline base material is provided. In another implementation, a nanophononic metamaterial structure is provided. The nanophononic metamaterial structure in this implementation includes: an at least partially crystalline base material configured to allow a plurality of phonons to move to provide thermal conduction through the base material; and at least one nanoscale locally resonant oscillator coupled to the at least partially crystalline base material.
    Type: Application
    Filed: April 7, 2014
    Publication date: January 15, 2015
    Applicant: The Regents of the University of Colorado, a body corporate
    Inventors: Mahmoud I. Hussein, Bruce L. Davis
  • Publication number: 20150015799
    Abstract: A projection screen includes a substrate and an optical microstructure. The substrate has a projection area for projecting an image onto the projection area. The projection area includes a plurality of arrayed optical regions. Each of the optical regions includes a first and second optical sub-region with optical characteristics of reflective scattering/transmissive scattering/specular reflection and simple transmission, wherein an area of the second optical sub-region is larger than that of the first optical sub-region. The optical microstructure is arranged on the substrate for guiding the light of the image to a specific direction. The above-mentioned projection screen with two or more optical characteristics, for example, can be at the same time as the front projection screen and the rear projection screen, or allows the user to watch background image behind the projection screen. A projection system including the above-mentioned projection screen is also disclosed.
    Type: Application
    Filed: July 14, 2014
    Publication date: January 15, 2015
    Inventor: Cheng-Huan CHEN
  • Patent number: 8891150
    Abstract: The invention provides flash imaging devices that include an optical change component that undergoes a change in response to an applied stimulus, a substrate and a stimulus element. Also provided are articles that include the subject devices, as well as methods of making and using the same.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: November 18, 2014
    Assignee: Segan Industries, Inc.
    Inventor: Hans O. Ribi
  • Patent number: 8879138
    Abstract: A surface plasmon polariton modulator capable of locally varying a physical property of a dielectric material to control a surface plasmon polariton. The surface plasmon polariton modulator includes a dielectric layer, including first and second dielectric portions, which is interposed between two metal layers. The second dielectric portion has a refractive index which varies with an electric field, a magnetic field, heat, a sound wave, or a chemical and/or biological operation applied thereto. The surface plasmon polariton modulator is configured to control one of an advancing direction, an intensity, a phase, or the like of a surface plasmon using an electric signal. The surface plasmon polariton modulator can operate as a surface plasmon polariton multiplexer or a surface plasmon polariton demultiplexer.
    Type: Grant
    Filed: January 15, 2013
    Date of Patent: November 4, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hwansoo Suh, Chang-won Lee, Yeon-sang Park, Jineun Kim
  • Publication number: 20140293393
    Abstract: A tunable PLC optical filter having sequentially connected thermally tunable Mach-Zehnder (MZ) interferometers is described. The cascade of MZ interferometers, each having a free spectral ranges matching ITU frequency grid spacing, are tuned so as to have a common passband centered on the frequency of the signal being selected, while having at least one of the stopbands centered on any other ITU frequency. Any other optical channel that may be present at any other ITU frequency is suppressed as a result. Another MZ interferometer in series with the cascade of interferometers including an asymmetric or variable coupler, is tuned to have low transmission at the center frequency of the selected optical channel.
    Type: Application
    Filed: March 28, 2013
    Publication date: October 2, 2014
    Inventors: Barthelemy FONDEUR, Jinxi SHEN, Leonid FRENKEL, Yimin HUA, David R. WALKER, Yu ZHANG, Vlatko MILINKOVIC
  • Patent number: 8837031
    Abstract: The design method for complex electromagnetic materials is expanded from form-invariant coordinate transformations of Maxwell's equations to finite embedded coordinate transformations. Embedded transformations allow the transfer of electromagnetic field manipulations from the transformation-optical medium to another medium, thereby allowing the design of structures that are not exclusively invisible. A topological criterion for the reflectionless design of complex media is also disclosed and is illustrated in conjunction with the topological criterion to design a parallel beam shifter and a beam splitter with unconventional electromagnetic behavior.
    Type: Grant
    Filed: November 10, 2008
    Date of Patent: September 16, 2014
    Assignee: Duke University
    Inventors: Marco Rahm, David R. Smith, David A. Schurig
  • Publication number: 20140247474
    Abstract: A reflection-type light control element according to the present invention is provided with a light control layer configured to exhibit a reversible change between a transparent state and a reflection state in a reversible reaction with a hydrogen and a catalyst layer configured to accelerate the reversible reaction of the light control layer, wherein the reflection-type light control element is such that the light control layer includes an alloy that contains at least one kind of element selected from a group composed of group 2 elements and at least two kinds of elements selected from a group composed of group 3 elements and rare earth elements, or a hydride of the alloy.
    Type: Application
    Filed: September 21, 2012
    Publication date: September 4, 2014
    Applicant: National Institute of Advanced Industrial Science and Technology
    Inventors: Yasusei Yamada, Kazuki Yoshimura, Kazuki Tajima
  • Publication number: 20140231627
    Abstract: An opto-electronic integrated circuit includes an optical splitter (12, 13A, 13B) formed on a substrate, the optical splitter branching an input optical signal into N (N is an integer of 2 or more) optical signals, and outputting the optical signals, and N optical phase modulators (15A-15D) formed on the substrate for the respective optical signals output from the optical splitter, the optical phase modulators adjusting the phases of the optical signals based on a phase modulation characteristic in which the phase change amount changes depending on the wavelength of light, and output the optical signals.
    Type: Application
    Filed: September 21, 2012
    Publication date: August 21, 2014
    Applicants: NTT ELECTRONICS CORPORATION, NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Atsushi Wakatsuki, Tadao Ishibashi
  • Publication number: 20140224989
    Abstract: Optical devices that include one or more structures fabricated from polar-dielectric materials that exhibit surface phonon polaritons (SPhPs), where the SPhPs alter the optical properties of the structure. The optical properties lent to these structures by the SPhPs are altered by introducing charge carriers directly into the structures. The carriers can be introduced into these structures, and the carrier concentration thereby controlled, through optical pumping or the application of an appropriate electrical bias.
    Type: Application
    Filed: February 7, 2014
    Publication date: August 14, 2014
    Applicant: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: James Peter Long, Joshua D. Caldwell, Jeffrey C. Owrutsky, Orest J. Glembocki
  • Patent number: 8805136
    Abstract: A method and apparatus for tunable on-fiber Bragg gratings for DWDM and other applications on a small section of the core of single mode communication of an optical fiber. The method comprises etching most of the cladding on a small section of the fiber; coating the etched portion with a metallic electrode material and then with a layer of an electrooptic material; coating the electrooptic material with a photoresist; producing the Bragg grating pattern using a holographic process or on-axis interferometry; dissolving the non-exposed photoresist,; etching the grating pattern into the electrooptic material, and coating the Bragg gratings with a metallic material constructing the outer electrode. The presence of an electric signal on the electrodes will change the optical properties of the electrooptic material, as well as the diffraction/reflection properties of the Bragg gratings.
    Type: Grant
    Filed: May 8, 2006
    Date of Patent: August 12, 2014
    Assignee: Photonics On-Fiber Devices, Inc.
    Inventor: Mahmoud A. El-Sherif
  • Patent number: 8798408
    Abstract: Plasmons on a waveguide may deliver energy to photocatalyze a reaction. The waveguide or other energy carrier may be configured to carry electromagnetic energy and generate plasmon energy at one or more locations proximate to the waveguide, where the plasmon energy may react chemically with a medium or interaction material.
    Type: Grant
    Filed: April 9, 2012
    Date of Patent: August 5, 2014
    Inventor: Roderick A. Hyde
  • Publication number: 20140127829
    Abstract: An optical device has a deformable solid substrate, and a two dimensional array of metal particles which is carried by the substrate. The array provides a controlled separation between nearest-neighbour particles. Deformation of the substrate produces corresponding variation in the controlled separation such that the two dimensional array undergoes a transition between metallic and insulator surface reflectance.
    Type: Application
    Filed: May 16, 2012
    Publication date: May 8, 2014
    Applicant: Cambridge Enterprise Limited
    Inventors: Jeremy Baumberg, Fumin Huang, Matthew Millyard
  • Patent number: 8711211
    Abstract: A microscope has a light source for generating a light beam having a wavelength, ?, and beam-forming optics configured for receiving the light beam and generating a Bessel-like beam that is directed into a sample. The beam-forming optics include an excitation objective having an axis oriented in a first direction. Imaging optics are configured for receiving light from a position within the sample that is illuminated by the Bessel-like beam and for imaging the received light on a detector. The imaging optics include a detection objective having an axis oriented in a second direction that is non-parallel to the first direction. A detector is configured for detecting signal light received by the imaging optics, and an aperture mask is positioned.
    Type: Grant
    Filed: June 14, 2011
    Date of Patent: April 29, 2014
    Assignee: Howard Hughes Medical Institute
    Inventor: Robert E. Betzig
  • Patent number: 8654430
    Abstract: An electro-absorption modulator includes: a semiconductor substrate; and an n-type InP cladding layer, an AlGaInAs light absorbing layer, an InGaAsP optical waveguide layer, and a p-type InP cladding layer, which are sequentially laminated on the semiconductor substrate. The InGaAsP optical waveguide layer includes a plurality of InGaAsP layers with different constitutions. The energy barrier between valence band edges of the InGaAsP layers is smaller than the energy barrier when the InGaAsP optical waveguide layer includes only one InGaAsP layer.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: February 18, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventor: Takeshi Yamatoya
  • Publication number: 20140022619
    Abstract: A spatially multiplexed autostereoscopic display is arranged to provide landscape and portrait operation. Multiple optical windows may be provided by spatial and temporal multiplexing techniques. A fast response lens array pair is aligned with a fast response spatial light modulator, and synchronized to provide first and second sets of images with first and second respective directionalities to provide first and second sets of respective optical windows. The first and second sets of optical windows may each comprise two or more optical windows in each viewing lobe. The optical windows may be arranged with an inclination to the vertical of 25 degrees to 65 degrees. An observer tracking system may be arranged to direct left and right eye image data to the left and right eyes of an observer, respectively, for landscape and portrait orientations of the display.
    Type: Application
    Filed: July 10, 2013
    Publication date: January 23, 2014
    Inventors: Graham J. Woodgate, Michael G. Robinson, Jonathan Harrold
  • Patent number: 8630825
    Abstract: A method of determining the surface topology of a reflector for convergence of a beam incident thereupon.
    Type: Grant
    Filed: August 9, 2011
    Date of Patent: January 14, 2014
    Inventor: Hilbrand Harlan-Jacob Sybesma
  • Publication number: 20140002879
    Abstract: Some embodiments provided herein relate to filters for electromagnetic radiation. Some embodiments provided herein relate to phototunable compounds for which at least one optical characteristic can be changed. Some embodiments herein relate to methods of manipulating a wavelength of electromagnetic radiation.
    Type: Application
    Filed: June 27, 2012
    Publication date: January 2, 2014
    Applicant: EMPIRE TECHNOLOGY DEVELOPMENT LLC
    Inventor: Toshimi Fukui
  • 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
  • Patent number: 8587855
    Abstract: An electric-field-sensitive element (1) includes: an optical function layer (5) that includes a metal oxide selected from the group consisting of tin dioxide, titanium dioxide and zinc oxide, and an insulating material covering the metal oxide, the optical function layer (5) having a visible light transmittance that changes through application of an electric field; and a first and second electrode layer (7, 9) that sandwich the optical function layer (5) therebetween.
    Type: Grant
    Filed: August 19, 2011
    Date of Patent: November 19, 2013
    Assignee: Guala Technology Co., Ltd.
    Inventor: Akira Nakazawa
  • Patent number: 8547620
    Abstract: A light modulation device includes: an input terminal into which a modulation signal is input; a light modulation element including an anode connected to the input terminal and a cathode that is grounded; a matching resistor connected in parallel with the light modulation element; a matching capacitor connected to the light modulation element and connected in series to the matching resistor; and a protective resistor connected in parallel with the light modulation element, the matching resistor, and the matching capacitor.
    Type: Grant
    Filed: April 20, 2011
    Date of Patent: October 1, 2013
    Assignee: Mitsubishi Electric Corporation
    Inventor: Norio Okada
  • 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
  • Publication number: 20130234935
    Abstract: A display assembly, comprising: a display device (30); a microlens array (34); and an eye tracker (8), for example a pupil tracker (8), and/or a head tracker; wherein plural pixels (150) or sub-pixels of the display device (30) are provided for each microlens (160) of the microlens array (34). The display may be adapted such that only certain pixels/sub-pixels (150) are activated/selected for any particular determined pupil/eye/head position, for example such that for each microlens (160), only one respective pixel/sub-pixel (150) is activated/selected for any particular determined pupil/eye/head position. The display device (30) may be a transparent display device (30), the microlens array (34) may be a switchable microlens array (34), and the display assembly may further comprise a light blocking device (32) that is switchable between a substantially light blocking state and a substantially light passing state.
    Type: Application
    Filed: October 24, 2011
    Publication date: September 12, 2013
    Applicant: BAE SYSTEMS PLC
    Inventor: Michael Stewart Griffith
  • Publication number: 20130215483
    Abstract: A plasmonic modulator and an optical apparatus including the same are provided. The plasmonic modulator includes a first metal layer, and a second metal layer facing the first metal layer. The plasmonic modulator further includes a refractive index varying layer disposed between the first and second metal layers and including a varying refractive index, and an insulating nitride layer disposed between the refractive index varying layer and the first metal layer.
    Type: Application
    Filed: February 21, 2013
    Publication date: August 22, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Samsung Electronics Co., Ltd.
  • Publication number: 20130208332
    Abstract: An optical plate includes a substrate and a resonator structure formed on or in the substrate, wherein the resonator structure is configured to produce an abrupt change in phase, amplitude and/or polarization of incident radiation.
    Type: Application
    Filed: March 15, 2013
    Publication date: August 15, 2013
    Applicant: President and Fellows of Harvard College
    Inventors: Nanfang Yu, Federico Capasso, Zeno Gaburro, Patrice Genevet, Mikhail Kats, Francesco Aieta
  • Publication number: 20130201543
    Abstract: A light modulation device comprising an optical element and at least one addressable mask disposed adjacent to the optical element. The optical element comprises at least two sub-elements, each of the at least two sub-elements having at least one optical characteristic wherein at least one optical characteristic of one sub-element is discrete from at least one optical characteristic of another sub-element. The mask comprises at least two regions corresponding to the at least two sub-elements, each of the at least two regions being individually addressable to enable its corresponding sub-element to be light transmitting.
    Type: Application
    Filed: April 8, 2011
    Publication date: August 8, 2013
    Applicant: THE TECHNOLOGY PARTNERSHIP PLC
    Inventor: Roger Clarke