Light Wave Directional Modulation (e.g., Deflection Or Scanning Is Representative Of The Modulating Signal) Patents (Class 359/298)
  • Patent number: 10295834
    Abstract: Disclosed is a display apparatus includes a display panel which includes display devices; a micro lens group located above a light-emitting side of the display panel, and the micro lens group includes micro lens devices, and the micro lens devices are disposed to correspond to the display devices, respectively, and distances between centers of the micro lens devices and centers of the corresponding display devices are gradually increased along a direction from a center position to an edge position of the display panel. Further, a liquid lens disposed on a side of the micro lens group away from the display panel, and the liquid lens is configured for realizing multi-layer display of a suspension image by changing a phase of incident light.
    Type: Grant
    Filed: February 4, 2018
    Date of Patent: May 21, 2019
    Inventors: Yaoyang Liu, Lei Niu, Jian Xu, Jialing Li
  • Patent number: 10241333
    Abstract: A light guide includes a light-guide member including an incidence portion through which image light emitted from an image display element enters the light-guide member; an exit portion through which the image light exits the light-guide member to an outside of the light-guide member; a retroreflection portion to reverse a direction of travel of the image light guided through the light-guide member; and an extraction portion to guide the image light reversed by the retroreflection portion to the exit portion. The retroreflection portion has a plurality of surfaces.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: March 26, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Naoki Nakamura, Toshiaki Tokita, Shiori Ohsugi, Takashi Kubota
  • Patent number: 10139618
    Abstract: A multi-mirror array including displaceable mirror elements includes a passive electric damping mechanism for damping disturbances of the displacement positions of the mirror elements.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: November 27, 2018
    Assignee: Carl Zeiss SMT GmbH
    Inventors: Jan Horn, Stefan Tuerk, Oscar Noordman, Ulrich Bihr
  • Patent number: 10126466
    Abstract: A multifunctional dielectric gradient metasurface optical device has a layer of nanoscale dielectric gradient metasurface optical antenna elements deposited on a substrate layer, arranged with spatially varying orientations, shapes, or sizes in the plane of the device such that the optical device has a spatially varying optical phase response capable of optical wavefront shaping. The spatially varying optical phase response is a spatial interleaving of multiple distinct phase profiles corresponding to multiple optical sub-elements, thereby providing multifunctional wavefront shaping in the single optical element.
    Type: Grant
    Filed: January 29, 2017
    Date of Patent: November 13, 2018
    Assignees: The Board of Trustees of the Leland Stanford Junior University, Technion Research and Development Foundation Limited
    Inventors: Dianmin Lin, Mark L. Brongersma, Erez Hasman, Pieter G. Kik, Aaron L. Holsteen
  • Patent number: 10078259
    Abstract: An optical scanning control device includes a scanner that scans light emitted from a laser in accordance with an image signal to form an image on a screen; a first optical detector that detects light scanned by the scanner; a second optical detector that detects light scanned by the scanner; and a controller that controls a deflection angle of the scanner based on a time difference between an output of the first optical detector and an output of the second optical detector.
    Type: Grant
    Filed: February 24, 2016
    Date of Patent: September 18, 2018
    Inventors: Yuji Kimura, Riichiro Hibiya
  • Patent number: 10078986
    Abstract: An active matrix electro-wetting on dielectric (AM-EWOD) device includes a plurality of array elements arranged in an array, each of the array elements including array element circuitry, an element electrode, and a reference electrode. The array element circuitry includes an actuation circuit configured to apply actuation voltages to the electrodes, and an impedance sensor circuit configured to sense impedance at the array element electrode to determine a droplet property at the array element. The impedance sensor circuit is operated by perturbing a potential applied to the reference electrode. The AM-EWOD device includes a common row addressing line. The impedance sensor circuit further is operated by supplying voltage signals over the common addressing line to effect both a reset operation and an operation for selecting a row in the array to be sensed. The circuitry isolates the array element from the actuation voltage during operating the impedance sensor circuit.
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: September 18, 2018
    Assignee: Sharp Life Science (EU) Limited
    Inventor: Benjamin James Hadwen
  • Patent number: 10031288
    Abstract: An optical structure and a system includes a Hyperuniform Disordered Solid (“HUDS”) structure and a waveguide. The HUDS structure is formed by walled cells organized in a lattice.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: July 24, 2018
    Assignee: Etaphase, Inc.
    Inventors: Ruth Ann Mullen, Marian Florescu, Milan M. Milosevic
  • Patent number: 9977233
    Abstract: An electrowetting display comprises a first support plate, a second support plate substantially parallel to the first support plate, an electrolyte solution disposed between the first support plate and the second support plate, and a plurality of transparent diffuser elements protruding into the electrolyte solution from non-contiguous areas of the second support plate. Recesses separate the transparent diffuser elements.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: May 22, 2018
    Inventors: Toru Sakai, Tulasi Sridhar Reddy Guntaka
  • Patent number: 9837788
    Abstract: A method and system for amplifying optical signals includes generating idler signals for input signals using an optical pump at a first non-linear element (NLE). An intermediate stage including a Raman amplifier performs pump amplification using the output from the first NLE along a single optical path. Optical power monitoring of the input signals may be used for power equalization. The intermediate stage may include a wavelength selective switch for a certain degree of phase modulation. The phase-sensitive amplified signal is generated at a second NLE using the optical pump. Optical power monitoring of the input signals may be used for power equalization and other control functions to achieve low-noise operation.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: December 5, 2017
    Assignee: Fujitsu Limited
    Inventors: Youichi Akasaka, Motoyoshi Sekiya
  • Patent number: 9833626
    Abstract: An implantable medical device (IMD) is configured to be implanted within a patient. The IMD may include a controller configured to adjust a communication frequency, a housing formed of an electrically common material, and an insulating cover coupled to the housing. The insulating cover may include one or both of at least one opening or at least one thinned area over portions of the housing. Multiple sub-electrodes are formed in the housing through the opening(s) or the thinned area(s).
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: December 5, 2017
    Assignee: Pacesetter, Inc.
    Inventors: Gleb Klimovitch, Timothy Edward Ciciarelli
  • Patent number: 9759935
    Abstract: An optical modulator is described. This optical modulator may be implemented using silicon-on-insulator (SOI) technology. In particular, a semiconductor layer in an SOI platform may include a photonic crystal having a group velocity of light that is less than that of the semiconductor layer. Moreover, an optical modulator (such as a Mach-Zehnder interferometer) may be implemented in the photonic crystal with a vertical junction in the semiconductor layer. During operation of the optical modulator, an input optical signal may be split into two different optical signals that feed two optical waveguides, and then subsequently combined into an output optical signal. Furthermore, during operation, time-varying bias voltages may be applied across the vertical junction in the optical modulator using contacts defined along a lateral direction of the optical modulator.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: September 12, 2017
    Inventors: Ying Luo, Shiyun Lin, Xuezhe Zheng, Ashok V. Krishnamoorthy
  • Patent number: 9706193
    Abstract: A display device has a display panel that switches a display region of a two-dimensional image between a transparent state in which the two-dimensional image is not displayed to be transparent and an opaque state in which the two-dimensional image is displayed to be opaque, and a stereoscopic projection device arranged on a back surface side of the display panel. The stereoscopic projection device projects a stereoscopic projection image to a position overlapping the display region of the display panel when viewed from a front surface side.
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: July 11, 2017
    Assignee: OMRON Corporation
    Inventor: Masayuki Shinohara
  • Patent number: 9696605
    Abstract: A method for fabricating crystalline dielectric material on top of metal layers to produce an apparatus for non-mechanical steering of an input laser beam is provided. The apparatus may include a plurality of stacked parallel dielectric waveguides, each waveguide of which is fabricated by separating layers of dielectric material from a donor wafer and bonding the separated layers of dielectric material to a receiving wafer. A plurality of voltages is applied across the stacked parallel dielectric waveguides. Each of the stacked parallel dielectric waveguides is electrically phase modulated to deflect an output beam in a predictable manner.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: July 4, 2017
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventors: Peter N. Russo, Jeffrey L. Jew, Paul R. Moffitt
  • Patent number: 9678004
    Abstract: An optical device includes a transparent substrate and a conductive layer disposed over an upper surface of the transparent substrate. The conductive layer defines at least one groove inwardly extending from an upper surface and includes an aperture that is spaced apart from the at least one groove. An interface between the upper surface of the conductive layer and an ambient medium defines an optical branch along which surface plasmon polariton modes are excited in response to at least partially coherent light being received by the optical device.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: June 13, 2017
    Inventors: Filbert Bartoli, Qiaoqiang Gan, Yongkang Gao
  • Patent number: 9664894
    Abstract: A micro optical switch device, an image display apparatus including the same, and a method of manufacturing the micro optical switch device are provided. The micro optical switch device includes a substrate; a first electrode disposed on the substrate and having a plurality of openings; a second electrode disposed above and spaced apart from the first electrode, and having a plurality of openings; and support units disposed on the substrate and configured to support the second electrode, wherein the support units include deformation preventing portions protruding beyond a top surface of the second electrode.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: May 30, 2017
    Inventors: Dong-sik Shim, Woon-bae Kim, Hyung Choi
  • Patent number: 9579153
    Abstract: A device and a method for the femtosecond laser surgery of tissue, especially in the vitreous humor of the eye. The device includes an ultrashort pulse laser with pulse widths in the range of approximately 10 fs-1 ps, especially approximately 300 fs, pulse energies in the range of approximately 5 nJ-5 ?J, especially approximately 1-2 ?J and pulse repetition rates of approximately 10 kHz-10 MHz, especially 500 kHz. The laser system is coupled to a scanner system which allows the spatial variation of the focus in three dimensions (x, y and z). In addition to the therapeutic laser/scanner optical system, the device includes a navigation system.
    Type: Grant
    Filed: June 1, 2011
    Date of Patent: February 28, 2017
    Assignee: Carl Zeiss Meditec AG
    Inventors: Manfred Dick, Marcus Blum, Matthias Reich
  • Patent number: 9407837
    Abstract: An electronic device includes a modulated light projector to project an infrared light pattern and an image sensor. The image sensor includes an array of photosensors and a filter array overlying the array of photosensors. The filter array comprises a mosaic of color filter elements and infrared filter elements, each color filter element overlying a corresponding photosensor of a first subset of photosensors and each infrared filter element overlying a corresponding photosensor of a second subset of photosensors. The electronic device further includes a controller to, in a first mode, control the image sensor to capture a color image using the first subset of photosensors and, in a second mode, control the image sensor to capture a depth image representing a reflection of the infrared light pattern using the second subset of photosensors.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: August 2, 2016
    Assignee: Google Inc.
    Inventor: Johnny C. Lee
  • Patent number: 9277299
    Abstract: A line switching device includes multiple input ports to which signals are input and that include first input ports and second input ports different from the first input ports; multiple output ports that include given output ports; a branch unit that branches first signals input from the first input ports; and a switch that selectively outputs, among second signals input from the second input ports and branched signals branched from the first signals by the branch unit, signals that are to be switched to an output port among the given ports.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: March 1, 2016
    Inventors: Shigeo Tani, Takashi Umegaki
  • Patent number: 9239457
    Abstract: A display apparatus includes an array of light modulators. Each light modulator has a first actuator configured to drive the light modulator into a first state and a second actuator configured to drive the light modulator into a second state. The display apparatus also includes a control matrix including, for each light modulator in the array, a single actuation voltage interconnect. The actuation voltage interconnect is configured to apply a first drive voltage to the first actuator of the light modulator and apply a second drive voltage to the second actuator of the light modulator. In addition, the actuation voltage interconnect is configured to control application of a data voltage to a latch circuit to control the application of the first and second drive voltages to the first and second actuators.
    Type: Grant
    Filed: July 12, 2012
    Date of Patent: January 19, 2016
    Assignee: Pixtronix, Inc.
    Inventors: Stephen R. Lewis, Stephen English, Jianguo Yao, John DeRoo, Roger W. Barton
  • Patent number: 9217861
    Abstract: Micro-mirror arrays configured for use in a variable focal length lens are described herein. An example variable focal length lens comprises a micro-mirror array having a plurality of micro-mirror elements arranged in at least a first section and a second section. Each micro-mirror element has a tilt axis and comprises, on each of two opposing sides of the tilt axis, (i) at least one actuation electrode, (ii) at least one measurement electrode, and (iii) at least one stopper. Additionally, each micro-mirror element in the first section has a first tilt angle range, and each micro-mirror element in the second section has a second tilt angle range, with the first tilt angle range being less than the second tilt angle range.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: December 22, 2015
    Assignee: IMEC VZW
    Inventors: Murali Jayapala, Geert Van der Plas, Veronique Rochus, Xavier Rottenberg, Simone Severi
  • Patent number: 9086571
    Abstract: A micro-electro-mechanical-system (MEMS) micromirror array has an array of micromirrors on a support structure. Each micromirror is pivotally attached to the support structure by a resilient structure. The resilient structure defines a pivot axis. There is an array of electrostatic actuators for pivotally driving the array of micromirrors about the pivot axis. Each electrostatic actuator comprises a first part carried by the support structure, and a second part carried by the corresponding micromirror. An electrostatic sink is mounted to the support structure that shields at least one micromirror from spurious electrostatic actuation.
    Type: Grant
    Filed: June 3, 2013
    Date of Patent: July 21, 2015
    Inventor: Tiansheng Zhou
  • Patent number: 9052510
    Abstract: A micromechanical component has a holding device and an adjustable component, which is adjustable with respect to the holding device at least from a first position into a second position, and which is connected via at least one spring to the holding device. The micromechanical component also includes at least one silicide-containing line segment situated on the at least one spring.
    Type: Grant
    Filed: May 25, 2011
    Date of Patent: June 9, 2015
    Inventors: Steffi Lindenkreuz, Gerhard Kiesewetter, Stefan Pinter, Joerg Muchow
  • Patent number: 9045329
    Abstract: The invention relates to deflectable micromechanical elements which can preferably be deflected in translation and optionally also in an oscillatory manner. With respect to known solutions, it is the object of the invention to enable larger deflections with a simultaneously improved resistance toward lateral forces and torques. In this connection, a suspension having at least one spring system is present at elements in accordance with the invention. Levers pivotally connected to torsion spring elements are present at spring systems. Torsion spring elements of a spring system are aligned in a common axis and/or a plurality of axes arranged parallel to one another and at least one torsion spring element is fixedly clamped.
    Type: Grant
    Filed: November 25, 2005
    Date of Patent: June 2, 2015
    Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung E.V.
    Inventors: Alexander Wolter, Thomas Klose
  • Patent number: 9047830
    Abstract: An apparatus includes a plurality of display elements arranged in an array and a control matrix coupled to the plurality of display elements to communicate data and drive voltages to the display elements. For each display element, the control matrix includes an actuation circuit coupling a voltage source to the display element. The control matrix is configured to apply an actuation voltage to an actuator of the display element throughout an actuation stroke of the actuator and to initiate the actuation of the actuator after a pre-charging signal that initiated the application of the actuation voltage to the actuator has been deactivated.
    Type: Grant
    Filed: August 9, 2012
    Date of Patent: June 2, 2015
    Assignee: Pixtronix, Inc.
    Inventors: Stephen English, Stephen R. Lewis
  • Publication number: 20150146280
    Abstract: The disclosure relates to the field of graphical elements and is directed to an optical effect layer (OEL), a device and a method for producing same. The disclosure provides an optical effect that is easy to detect as such and exhibits a viewing-angle dependent apparent motion of image features over an extended length if the viewing angle with respect to the OEL changes. An OEL includes a binder material being at least partially transparent and a plurality of particles dispersed within the layer. Each particle has a non-isotropic reflectivity and may be magnetic or magnetizable. The orientation of the particles forms an orientation pattern extending over a length within an extended surface of the OEL, such that the local average of an angle between (i) a straight line along an observed longest dimension within the corresponding cross-section shape, and (ii) said first direction x varies according to a function (?) of a position (P) along said first direction.
    Type: Application
    Filed: April 30, 2013
    Publication date: May 28, 2015
    Applicant: SICPA HOLDING SA
    Inventors: Pierre Degott, Mathieu Schmid, Claude Alain Despland, Cédric Amerasinghe
  • Patent number: 9042018
    Abstract: A leaky-mode resonant retarder is described. The retarder may include a substrate and a spatially modulated periodic layer coupled to the substrate, where the spatially modulated periodic layer is configured to shift a phase between two perpendicular electric-field components of incident light. The retarder may operate as a half-wave plate or a quarter-wave plate.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: May 26, 2015
    Assignee: The Board of Regents of The University of Texas System
    Inventors: Robert Magnusson, Mehrdad Shokooh-Saremi
  • Patent number: 9042001
    Abstract: An electrophoretic display apparatus includes an array substrate, an opposite substrate facing the array substrate, and an electrophoretic layer disposed between the array substrate and the opposite substrate. The electrophoretic layer includes a non-polar solvent and a plurality of polar particles dispersed in the non-polar solvent. At least one of the array substrate or the opposite substrate includes a plurality of electric field forming electrodes respectively.
    Type: Grant
    Filed: April 2, 2012
    Date of Patent: May 26, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Myung-Eun Kim, Sangil Kim, Gilhwan Yeo, Yujin Kim, Byungseok Choi
  • Publication number: 20150138486
    Abstract: Provided are a directional backlight unit, a method of operating the directional backlight unit, and a display device. More particularly, provided are a directional backlight unit including a light source, a first optical plate layer disposed to be adjacent to the light source, a second optical plate layer disposed on the first optical plate layer and to which light from the light source is incident, and an optical sheet through which light emitted from the second optical plate layer passes, a method of operating the directional backlight unit, and a display device including the directional backlight unit.
    Type: Application
    Filed: July 24, 2014
    Publication date: May 21, 2015
    Applicant: Electronics and Telecommunications Research Institute
    Inventor: Sei Hyoung LEE
  • Patent number: 9036243
    Abstract: On/off digital drive signals are used to create arbitrary spatial and temporal ribbon movement patterns in MEMS ribbon arrays.
    Type: Grant
    Filed: September 20, 2013
    Date of Patent: May 19, 2015
    Assignee: Alces Technology, Inc.
    Inventors: David M Bloom, Matthew A Leone
  • Patent number: 9036246
    Abstract: Provided is a 3-dimensional (3D) display apparatus including a light source, a beam scanner, and a beam deflector array. The beam scanner scans light emitted by the light source, and the beam deflector array includes a plurality of beam deflectors arranged in an array to reproduce a light field by changing a direction of light rays scanned by the beam scanner.
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: May 19, 2015
    Assignees: Samsung Electronics Co., Ltd., Chungbuk National University Industry-Academic Cooperation Foundation
    Inventors: Hoon Song, Hong-seok Lee, Jae-hyeung Park
  • Patent number: 9036229
    Abstract: A MEMS arrangement is provided that has a top plane containing a rotatable element such as a mirror. There is a middle support frame plane, and a lower electrical substrate plane. The rotatable element is supported by a support frame formed in the middle support frame plane so as to be rotatable with respect to the frame in a first axis of rotation. The frame is mounted so as to be rotatable with respect to a second axis of rotation. Rotation in the first axis of rotation is substantially independent of rotation in the second axis of rotation.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: May 19, 2015
    Assignee: Micralyne Inc.
    Inventors: Barrie Keyworth, Kevin Kornelsen, Jared Crawford
  • Patent number: 9030391
    Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for accurately positioning a movable conductive layer of a reflective display element. In one aspect, an initial position of the movable conductive layer with respect to at least one or more fixed conductive layers is sensed. A charging voltage may be determined based at least in part on the initial position. The charging voltage may be applied to the movable conductive layer.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: May 12, 2015
    Assignee: QUALCOMM MEMS Technologies, Inc.
    Inventors: John H. Hong, Chong U. Lee, Cheonhong Kim, Edward K. Chan
  • Patent number: 9030727
    Abstract: A manufacturing method of an electrowetting display apparatus, in which a pixel electrode is formed on a substrate including pixel areas, a first mixture including a hydrophobic material and a solvent is disposed on the substrate to form a hydrophobic insulating layer, and a first heat process is performed to remove a portion of the solvent. Then, a second mixture including a material for a barrier and the solvent is disposed on the hydrophobic insulating layer, and the second mixture is patterned to form a barrier wall surrounding the pixel electrode in each pixel area. A second heat process is performed to remove the solvent in the hydrophobic insulating layer and the barrier wall, and a polar fluid and a non-polar fluid are disposed on the pixel electrode to form an electrowetting layer.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: May 12, 2015
    Assignee: Amazon Technologies, Inc.
    Inventor: Taimei Kodaira
  • Patent number: 9025235
    Abstract: An optical interference color display comprising a transparent substrate, an inner-front optical diffusion layer, a plurality of first electrodes, a patterned support layer, a plurality of optical films and a plurality of second electrodes is provided. The inner-front optical diffusion layer is on the transparent substrate and the first electrodes are on the inner-front optical diffusion layer. The patterned support layer is on the inner-front optical diffusion layer between the first electrodes. The optical film is on the first electrodes and the second electrodes are positioned over the respective first electrodes. The second electrodes are supported through the patterned support layer. Furthermore, there is an air gap between the second electrodes and their respective first electrodes.
    Type: Grant
    Filed: February 1, 2008
    Date of Patent: May 5, 2015
    Assignee: Qualcomm MEMS Technologies, Inc.
    Inventor: Wen-Jian Lin
  • Patent number: 9013774
    Abstract: A projection controlling method for controlling a MEMS scanning mirror to repeatedly scan an image light on a surface and form a projection image is provided. A resonance frequency of the MEMS scanning mirror which swings around a first swing axis is detected and provided to a filter unit as a parameter of a filtering process. A first periodic control signal with a first frequency and a plurality of harmonic components is generated. The harmonic component with the resonance frequency is filtered from the first periodic control signal by the filter unit. The filtered first periodic control signal is provided to the MEMS scanning mirror to control the MEMS scanning mirror to swing around the first swing axis according to the first frequency and to scan the image light on the surface back and forth along a first direction. A MEMS projection apparatus is also provided.
    Type: Grant
    Filed: January 22, 2013
    Date of Patent: April 21, 2015
    Assignee: Lite-On Technology Corpoation
    Inventor: Cheng-Da Ko
  • Patent number: 9001412
    Abstract: A microelectromechanical (MEMS) device includes a substrate, a movable element over the substrate, and an actuation electrode above the movable element. The movable element includes a deformable layer and a reflective element. The deformable layer is spaced from the reflective element.
    Type: Grant
    Filed: October 10, 2012
    Date of Patent: April 7, 2015
    Assignee: QUALCOMM MEMS Technologies, Inc.
    Inventors: Clarence Chui, William Cummings, Brian James Gally, Lior Kogut, Ming-Hau Tung, Yeh-Jiun Tung, Chih-Wei Chiang, Denis Endisch
  • Patent number: 8988761
    Abstract: A transflective display apparatus includes a first electrode and a second electrode, which face each other and are separated from one another by a pixel electrode. In addition, a preparation voltage is applied to the first electrode or the second electrode before applying a driving voltage to the pixel electrode.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: March 24, 2015
    Assignee: Amazon Technologies, Inc.
    Inventors: Seung-Jin Baek, Sangil Kim, Yeun Tae Kim, Hyeon Gu Cho
  • Patent number: 8970941
    Abstract: This disclosure provides systems, methods and apparatus related to an electromechanical display device. In one aspect, an analog interferometric modulator (AIMOD) includes a reflective display pixel having a movable reflective layer and a stationary absorber layer, the reflective layer and absorber layer defining a cavity therebetween. A color notch filter may be employed to produce an improved white state. In some implementations, the color notch filter is positioned on a side of the substrate opposite the absorber layer. In some other implementations, the color notch filter is positioned between the substrate and the movable reflective layer.
    Type: Grant
    Filed: June 23, 2014
    Date of Patent: March 3, 2015
    Assignee: QUALCOMM MEMS Technologies, Inc.
    Inventors: Jian Ma, Tallis Young Chang, John Hyunchul Hong, Ion Bita
  • Patent number: 8970942
    Abstract: An electrophoretic display device includes a switching element on a substrate including a display area having a pixel region and a non-display area at a periphery of the display area, a passivation layer covering the switching element, a pixel electrode on the passivation layer and connected to the switching element, an electrophoresis film on the pixel electrode and including an ink layer and a base film, wherein the ink layer includes a plurality of charged particles, and the base film is formed of polyethylene terephthalate, a common electrode for generating an electric field with the pixel electrode to drive the electrophoresis film, and a color filter layer directly on the electrophoresis film, wherein the color filter layer is formed under temperatures of less than 100 degrees of Celsius.
    Type: Grant
    Filed: July 21, 2010
    Date of Patent: March 3, 2015
    Assignee: LG Display Co., Ltd.
    Inventors: Oh-Nam Kwon, Nack-Bong Choi, Choon-Ho Park, Yu-Sok Lim, Jong-Kwon Lee
  • Patent number: 8970939
    Abstract: A multi-state light modulator comprises a first reflector. A first electrode is positioned at a distance from the first reflector. A second reflector is positioned between the first reflector and the first electrode. The second reflector is movable between an undriven position, a first driven position, and a second driven position, each having a corresponding distance from the first reflector. In one embodiment, the three positions correspond to reflecting white light, being non-reflective, and reflecting a selected color of light. Another embodiment is a method of making the light modulator. Another embodiment is a display including the light modulator.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: March 3, 2015
    Assignee: QUALCOMM MEMS Technologies, Inc.
    Inventors: Clarence Chui, William J. Cummings, Brian J. Gally
  • Patent number: 8960914
    Abstract: Provided is a laser projection apparatus which forms each one frame by performing two-dimensional scanning with laser light and projects images on a screen (201) with blanking periods inserted between frames, the laser light having been outputted from a laser light source (110). The laser projection apparatus is provided with a chive controlling device (132) which, in each of the blanking periods, changes the polarization state of the laser light having been outputted from the laser light source. This configuration enables speckle reduction by having the polarization state changed from one frame to another, and also enables favorable image projection since there is no change in luminance within each one of the frames. Thus, it is made possible to obtain image quality more favorable than that obtained conventionally.
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: February 24, 2015
    Assignee: Konica Minolta Opto, Inc.
    Inventor: Kenji Konno
  • Publication number: 20150043055
    Abstract: A method for compensating for a wavelength shift in a wavelength selective switch (WSS), and a device therefor. The device comprises a fixed seat (301) as well as a rotation beam (304) and a compensation block (302) that have different thermal expansion amounts, the rotation beam (304) and the compensation block (302) being fixedly adhered to the fixed seat (301). In the method, a combined structure of the rotation beam (304) and the compensation block (302) with different thermal expansion amounts is adopted; the combined structure rotates by means of different expansion amounts generated by the rotation beam (304) and the compensation block (302) at the same external temperature, and further drives an optical element of the WSS to rotate, hence compensating for a wavelength shift of the WSS. The method is safe and reliable; the device has a simple structure, and is convenient to encapsulate, is applicable to various WSS optical paths, and does not affect advantages of the optical path structure of the WSS.
    Type: Application
    Filed: September 4, 2012
    Publication date: February 12, 2015
    Inventors: Liu Yang, Meng Wang, Zhilin Yuan, Rui Yang, Lidan Song, Liping Sun, Jinping Guo, Dingkang Chen, Yuhong Ma, Lihong Tang
  • Publication number: 20150043054
    Abstract: In a method and system for controlling the shape of an optical pulse, the two-dimensional shape of the phase front is controlled using a first control device and the shape of the phase front and the two-dimensional shape of the pulse front is controlled using a second control device. The combined effect on the phase front results in a desired overall phase front control and the second device provides the desired overall pulse front control. This enables the phase front control and pulse front control to be decoupled. Correcting for pulse lengthening of femtosecond laser pulses during focusing by a dispersive lens. The spatially varying phase (72) introduced by the lens can be corrected for by a spatial light modulator like (SLM) a liquid crystal modulator. The spatially varying arrival time at the focus (70) can be compensated for by a deformable mirror (DM). A controller with a feedback loop and pulse characterization in the focus can compensate for the errors introduced by any dispersive focusing means.
    Type: Application
    Filed: March 19, 2013
    Publication date: February 12, 2015
    Inventors: Martin Booth, Patrick Salter, Richard Simmonds
  • Patent number: 8947755
    Abstract: An optical scanning device includes a rotationally-moving mirror on which a reflection plane is provided in a rotationally-movable manner, and a sealing unit over which a light-transmissive cover is provided, a first plane of the light-transmissive cover, a second plane of the light-transmissive cover, and the reflection plane of the rotationally-moving mirror within a rotationally-moving range being non-parallel to each other, the first plane being on the opposite side to the side of the rotationally-moving mirror, the second plane being on the side of the rotationally-moving mirror.
    Type: Grant
    Filed: February 14, 2013
    Date of Patent: February 3, 2015
    Assignee: Hitachi-LG Data Storage Inc.
    Inventors: Nobuhiro Konuma, Michio Hatagi
  • Patent number: 8937766
    Abstract: A method for forming a stereoscopic image having a left-eye image and a right-eye image repeats the steps of directing a line of the left-eye image as incident light toward a scanning element while directing a line of the right-eye image as incident light toward the scanning element, and moving the scanning element into position for directing incident light toward a portion of a display surface.
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: January 20, 2015
    Assignee: Eastman Kodak Company
    Inventors: Michael A. Marcus, John A. Agostinelli, Marek W. Kowarz
  • Patent number: 8937757
    Abstract: In an optical deflector apparatus, an optical deflector chip includes a mirror, an actuator adapted to rock the mirror, and first pads on a front surface of the optical deflector chip and connected to the actuator. A first substrate includes second pads on a back surface of the first substrate, and an opening is formed in the first substrate. The front surface of the optical deflector chip is adhered to the back surface of the first substrate in such a way that the first pads of the optical deflector chip are in contact with respective ones of the second pads of the first substrate and the mirror opposes the opening. A back surface of said optical deflector chip is adhered to a front surface of a second substrate.
    Type: Grant
    Filed: September 11, 2012
    Date of Patent: January 20, 2015
    Assignee: Stanley Electric Co., Ltd.
    Inventor: Yoshiaki Yasuda
  • Patent number: 8928969
    Abstract: A novel spatio-optical directional light modulator with no moving parts is introduced. This directional light modulator can be used to create 2D/3D switchable displays of various sizes for mobile to large screen TV. The inherently fast modulation capability of this new directional light modulator increases the achievable viewing angle, resolution, and realism of the 3D image created by the display.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: January 6, 2015
    Assignee: Ostendo Technologies, Inc.
    Inventors: Zahir Y. Alpaslan, Hussein S. El-Ghoroury, Jingbo Cai, Dale A. McNeill
  • Patent number: 8921765
    Abstract: The present invention relates to a system 100 for independently holding and manipulating one or more microscopic objects 158 and for targeting at least a part of the one or more microscopic objects within a trapping volume 102 with electromagnetic radiation 138. The system comprises trapping means for holding and manipulating the one or more microscopic objects and electromagnetic radiation targeting means (116). The light means comprising a light source and a spatial light modulator which serve to modify the light from the light source so as to enable specific illumination of at least a part of the one or more microscopic objects. The trapping means and the electromagnetic radiation targeting means (116) are enabled to function independently of each other, so that the trapped objects may be moved around without taking being dependent on which parts are being targeted and vice versa.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: December 30, 2014
    Assignee: Danmarks Tekniske Universitet
    Inventors: Jesper Glückstad, Darwin Palima
  • Patent number: 8917441
    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: Grant
    Filed: July 10, 2013
    Date of Patent: December 23, 2014
    Assignee: RealD Inc.
    Inventors: Graham J. Woodgate, Michael G. Robinson, Jonathan Harrold
  • Patent number: 8917440
    Abstract: An active optical device is provided. The active optical device includes an optically variable layer having a refractive index which changes according to temperature; and a temperature control unit that controls a temperature of one or more regions of the optically variable layer.
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: December 23, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sun-il Kim, Jun-hee Choi, Jong-min Kim