Patents Examined by Tuyen Q Tra
  • Patent number: 8139283
    Abstract: An apparatus includes a substrate having a metallic surface, a structure, and a dielectric object facing the metallic top surface. The structure is configured to optically produce surface plasmon polaritons that propagate on the metallic surface. The dielectric object is controllable to adjust values of the dielectric constant at an array of different positions along and near to the metallic surface.
    Type: Grant
    Filed: November 9, 2007
    Date of Patent: March 20, 2012
    Assignee: Alcatel Lucent
    Inventors: Vladimir Anatolyevich Aksyuk, Girsh Blumberg
  • Patent number: 8111446
    Abstract: In various embodiments of the invention, an interferometric display device is provided having an external film with a plurality of structures that reduce the field-of-view of the display. These structures may comprise, for example, baffles or non-imaging optical elements such as compound parabolic collectors. The baffles may comprise a plurality of vertically aligned surfaces arranged, e.g., in a grid. In certain preferred embodiments these baffles are opaque or reflective. These vertical surfaces, therefore, can substantially block light from exiting the interferometric display device in a substantially non-perpendicular direction. These vertical surfaces may, however, permit light directed in a substantially vertical direction to exit the display. The non-imaging optical elements, e.g., compound parabolic collectors, redirect light from large incident angles into more normal angles towards the display. As a result, the light reflected by the display to the user is also at a more normal angle.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: February 7, 2012
    Assignee: QUALCOMM MEMS Technologies, Inc.
    Inventors: Brian J. Gally, William J. Cummings
  • Patent number: 8102588
    Abstract: An apparatus, method, system, and computer-program product for producing magneto-optic materials in the blue and green wavelengths. The apparatus includes a substrate generally transparent to a light signal including a component at a predetermined visible frequency; a stack of optical multilayers overlying the substrate for transmitting the component with at least about forty percent power therethrough and having at least about twenty-four degrees of Faraday rotation per micron for the predetermined visible frequency less than about six hundred nanometers. The method includes processes for the manufacture and assembly of the disclosed materials, with the computer program product including machine-executable instructions for carrying out the disclosed methods.
    Type: Grant
    Filed: March 17, 2007
    Date of Patent: January 24, 2012
    Assignee: Panorama Synergy Ltd.
    Inventors: Kamal Alameh, Alex Grishin
  • Patent number: 8089678
    Abstract: The present invention provides optical elements comprising a photochromic linear polarizing element and a birefringent layer that circularly or elliptically polarizes transmitted radiation. The photochromic linear polarizing element comprises a substrate and either: (1) a coating comprising an aligned, thermally reversible photochromic-dichroic compound having an average absorption ratio of at least 1.5 in an activated state, and being operable for switching from a first absorption state to a second absorption state in response to actinic radiation, to revert back to the first absorption state in response to thermal energy, and to linearly polarize transmitted radiation in at least one of the two states; or (2) an at least partially ordered polymeric sheet connected to the substrate; and a thermally reversible photochromic-dichroic compound that is at least partially aligned with the polymeric sheet and has an average absorption ratio greater than 2.3 in the activated state.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: January 3, 2012
    Assignee: Transitions Optical, Inc
    Inventors: Anil Kumar, Peter C. Foller, Elizabeth Furar, Forrest R. Blackburn
  • Patent number: 8029138
    Abstract: A method is provided for stimulating a motion-detecting visual pathway of a subject. A subject is tasked with fixating on a central stimulus displayed on a computer-driven display. While the subject is visually fixated, a peripheral stimulus is presented on the display. At least one characteristic of the peripheral stimulus is altered so as to trigger the motion-sensitive visual pathway of the subject. The altered characteristic may be the spatial locus, size, pattern, luminosity or hue of the stimulus. The altered and base stimulus may be alternately displayed in a cyclical manner to sustain the display of a dynamic peripheral stimulus. While alternately displaying the base and altered stimulus, the subject's response, indicative of their detection of the stimulus, may be monitored and recorded. The dynamic peripheral stimulus may be, for example, a repetitively translating object, or a repetitively blinking object.
    Type: Grant
    Filed: July 25, 2007
    Date of Patent: October 4, 2011
    Assignee: NovaVision, Inc.
    Inventor: David P. Todd
  • Patent number: 8016418
    Abstract: An eye axial length measurement apparatus includes a light source, a non-contact eye axial length measurement unit for optically measuring axial length of a patient's eye in non-contact manner, an XYZ driving unit, and a determination means which determines whether a cloudy portion which is an obstacle to measurement by the non-contact eye axial length measurement unit is present, based on one of a measurement result of the non-contact eye axial length measurement unit and an imaging result of an anterior segment section imaging unit placeable in the non-contact eye axial length measurement unit.
    Type: Grant
    Filed: December 17, 2007
    Date of Patent: September 13, 2011
    Assignee: Nidek Co., Ltd.
    Inventors: Noriji Kawai, Tetsuyuki Miwa, Kunihiko Otake
  • Patent number: 8018642
    Abstract: A display system encompasses electrodes that induce a convective flow of a carrier fluid that transports a colorant species that is suspended in the carrier fluid. At least one of the convection flow, speed, and direction of the colorant species is controlled by operation of the electrodes.
    Type: Grant
    Filed: March 26, 2009
    Date of Patent: September 13, 2011
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Jong-Souk Yeo, Gregg Alan Combs, Jeffrey Todd Mabeck, Tim R. Koch, Pavel Kornilovich, Donald Milton Hill
  • Patent number: 7989695
    Abstract: The present invention pertains to organic infrared absorbing layers comprising an organic radical cation compound that absorbs in an infrared region and produces an electron transfer reaction that results in a flow of electrons. Preferably, the organic radical cation compound is a salt of an aminium radical cation. Provided are photovoltaic cells comprising such light-sensitive organic infrared absorbing layers.
    Type: Grant
    Filed: January 19, 2008
    Date of Patent: August 2, 2011
    Inventor: Steven Allen Carlson
  • Patent number: 7976163
    Abstract: A system measures a corneal topography of an eye. The system includes a group of first light sources arranged around a central axis, the group being separated from the axis by a radial distance defining an aperture in the group; a plurality of second light sources; a detector array; and an optical system adapted to provide light from the second light sources through the aperture to a cornea of an eye, and to provide images of the first light sources and images of the second light sources from the cornea, through the aperture, to the detector array. The optical system includes an optical element having a focal length, f. The second light sources are disposed to be in an optical path approximately one focal length, f, away from the optical element.
    Type: Grant
    Filed: June 27, 2007
    Date of Patent: July 12, 2011
    Assignee: AMO Wavefront Sciences LLC
    Inventors: Charles E. Campbell, Stephen W. Farrer, Daniel R. Neal, William S. Powers, Thomas D. Raymond
  • Patent number: 7973995
    Abstract: A nanostructured optoelectronic device is provided which comprises a nanostructured material and a host material intermingled with the nanostructured material. The host material may have a higher index of refraction than the nanostructured material. The host material's index of refraction may be chosen to maximize the effective active area of the device. In an alternative embodiment, the host material comprises scattering centers or absorption/luminescence centers which absorb light and reemit the light at a different energy or both.
    Type: Grant
    Filed: April 3, 2009
    Date of Patent: July 5, 2011
    Assignee: Bandgap Engineering Inc.
    Inventors: Marcie R. Black, Brent A. Buchine
  • Patent number: 7961401
    Abstract: A system for providing a two-position zoom-focus capability in a video inspection device comprising, in one embodiment, a focus lens cell and primary aperture attached to a set of fixed rails and connected to a zoom lens cell. In one embodiment, the focus lens cell is moveable into a first position along the rails through activation of a proximally located lens movement mechanism, and moveable into a second position through relaxation of a tensioned focus spring. In one embodiment, movement of the focus lens cell between first and second focus positions causes movement of the zoom lens cell and a secondary aperture between corresponding first and second zoom and aperture positions to provide unmagnified and magnified images of a target object.
    Type: Grant
    Filed: December 23, 2009
    Date of Patent: June 14, 2011
    Assignee: GE Inspection Technologies, LP
    Inventors: Joshua Lynn Scott, Clark Alexander Bendall, Theodore Alexander Chilek
  • Patent number: 7952792
    Abstract: The invention relates to a reflective display (1) comprising a substrate (4) and a reflective layer (3), e.g. comprising microcapsules (2) with an electrophoretic suspension arranged to reflect incident light (12) passing through the substrate (4), wherein the substrate (4) is structured so as to form a plurality of funnel-shaped protrusions (7) with reflective walls (8), the protrusions being oriented with a top end (72) facing towards the reflective layer and a base end (71) facing away from the reflective layer. According to this design, light that is reflected at sufficiently large reflection angles will experience one or more reflections by the protrusion walls (8). At each reflection the angle of propagation of the light (11) traveling through the substrate is decreased by twice the angle alpha between the wall (8) and the normal of the reflective layer (3).
    Type: Grant
    Filed: April 2, 2008
    Date of Patent: May 31, 2011
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Frank Anton Van Abeelen, Alexander Victor Henzen
  • Patent number: 7944603
    Abstract: A microelectromechanical device (MEMS) utilizing a porous electrode surface for reducing stiction is disclosed. In one embodiment, a microelectromechanical device is an interferometric modulator that includes a transparent electrode having a first surface; and a movable reflective electrode with a second surface facing the first surface. The movable reflective electrode is movable between a relaxed and actuated (collapsed) position. An aluminum layer is provided on either the first or second surface. The aluminum layer is then anodized to provide an aluminum oxide layer which has a porous surface. The porous surface, in the actuated position, decreases contact area between the electrodes, thus reducing stiction.
    Type: Grant
    Filed: May 13, 2008
    Date of Patent: May 17, 2011
    Assignee: QUALCOMM MEMS Technologies, Inc.
    Inventors: Teruo Sasagawa, Lior Kogut
  • Patent number: 7944598
    Abstract: Laser scanner projection systems that reduce the appearance of speckle in a scanned laser image are provided. The laser projection system includes a visible light source having at least one laser, a scanning element and a system controller. The system controller is programmed to generate a scanned laser image. The system further includes a first lens that focuses a scanned output beam onto an intermediate image and a second lens that projects the intermediate image onto a projection surface. A periodic phase mask having a period that is approximately equal to or greater than the beam waist diameter of the scanned output beam is positioned at the intermediate laser image. The period of the periodic phase mask is such that the projection of the scanned output beam jumps progressively from pixel to pixel, thereby reducing speckle contrast in the scanned laser image.
    Type: Grant
    Filed: November 6, 2008
    Date of Patent: May 17, 2011
    Assignee: Corning Incorporated
    Inventor: Jacques Gollier
  • Patent number: 7940447
    Abstract: An electrode is described. The electrode has a substrate having a first and a second surface; a conductive layer; an electroactive layer that includes nanoparticles having an average size from 5 nm to 30 nm; at least one electroactive chemical and at least one organic binder material. The electroactive chemical binds to the surface of the nanoparticles. The conductive layer is disposed on the second surface of the substrate, and the electroactive layer is disposed on the conductive layer. Also described are electrochromic articles including the electrode, and a coating composition that can be utilized to fabricate the electrode.
    Type: Grant
    Filed: December 4, 2006
    Date of Patent: May 10, 2011
    Assignee: 3M Innovative Properties Company
    Inventors: Junjun Wu, John E. Potts, Clinton P. Waller, Jr., Brian T. Weber, Jung-Sheng Wu, Michael W. Lofgren
  • Patent number: 7936499
    Abstract: A method and apparatus for driving an ElectroPhoretic Display (EPD) are provided, in which upon sensing a request for displaying data in a gradual graphic representation scheme, a plurality of segments for displaying the data are determined, a display changing order of the segments is determined, an inter-segment time interval is calculated, driving voltage pulses are applied to a first segment according to the display changing order, and driving voltage pulses are applied to each of the other segments at the inter-segment time interval after driving voltage pulses are applied to a previous segment according to the display changing order.
    Type: Grant
    Filed: January 7, 2010
    Date of Patent: May 3, 2011
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Gwan-Hyung Kim, Joo-Hoon Lee, Sun-Tae Jung, Se-Jin Kim
  • Patent number: 7936495
    Abstract: A semiconductor optical modulation device includes a semiconductor optical modulator, wires, an output side line, an input side line and a resistor. The semiconductor optical modulator is an electroabsorption optical modulator. One of the wires is connected between an electrode of the semiconductor optical modulator and the input side line. The other of the wires is connected between the electrode of the semiconductor optical modulator and the output side line. The resistor is connected in series with the output side line. Impedance of the output side line and impedance of the resistor are different from each other.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: May 3, 2011
    Assignee: Mitsubishi Electric Corporation
    Inventors: Norio Okada, Tatsuo Hatta, Atsushi Sugitatsu
  • Patent number: 7936497
    Abstract: An interferometric modulator is provided having a faster deformation time constant on actuation than relaxation time constant upon release from actuation. In some embodiments, apertures are formed in a mechanical membrane to decrease pressure, including liquid and/or gas pressures, on the membrane when actuated. In other embodiments, a dampening layer is disposed in close proximity above the membrane to apply greater downward pressure on the membrane and therefore slow the motion of the membrane when released from an actuated state. Other embodiments comprise structures, such as a heating element or vacuum device, to manipulate pressures above and/or below the mechanical membrane to affect the mechanical persistence of the display device.
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: May 3, 2011
    Assignee: Qualcomm Mems Technologies, Inc.
    Inventors: Clarence Chui, Manish Kothari
  • Patent number: 7934832
    Abstract: Disclosed are method and apparatus for characterizing the retinal nerve fiber layer (RNFL). An advantageous diagnostic parameter for characterizing the RNFL is a function of the product of the local RNFL thickness at a measurement locus×the distance of the measurement locus from a base point. The value of the diagnostic parameter in a patient's retina is compared to a corresponding reference range acquired from a population of healthy retinas.
    Type: Grant
    Filed: July 21, 2008
    Date of Patent: May 3, 2011
    Assignee: Topcon Medical Systems, Inc.
    Inventors: Yijun Huang, Tetsuyoshi Royama, Alexandre Kotchkin
  • Patent number: 7929196
    Abstract: A specular interferometric modulator array is configured to be at least partially selectably reflective. As such, the array forms a mirror surface having the capability of displaying information to the user while simultaneously being used as a specular mirror. The displayed information may be based on information from an external source, may be programmable, and may be based on user input.
    Type: Grant
    Filed: January 4, 2008
    Date of Patent: April 19, 2011
    Assignee: QUALCOMM MEMS Technologies, Inc.
    Inventors: Brian J. Gally, William J. Cummings