Within Display Element Patents (Class 359/277)
  • Patent number: 11169517
    Abstract: Method and apparatus are disclosed for initiation of vehicle remote park-assist with key fob. An example vehicle includes a cabin, a human-machine interface (HMI) unit located in the cabin, and a receiver-transceiver module. The receiver-transceiver module is configured to receive a return signal including a distance indicator from a key fob and a remote park-assist (RePA) signal. The example vehicle also includes an autonomy unit configured to perform RePA based on the RePA signal. The example vehicle also includes a controller configured to receive, via the HMI unit, selections to activate RePA and utilize the key fob for transmitting the RePA signal and determine, based on the distance indicator, whether the key fob is in the cabin. The controller also is configured to, responsive to determining that the key fob is in the cabin, prevent the autonomy unit from performing RePA.
    Type: Grant
    Filed: April 1, 2019
    Date of Patent: November 9, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Erick Michael Lavoie, John Robert Van Wiemeersch, Ali Hassani
  • Patent number: 10955718
    Abstract: Various embodiments herein relate to networks of electrochromic windows. The networks may be configured in particular ways to minimize the likelihood that the windows on the network draw more power than can be provided. The network may include particular hardware components that provide additional power to windows as needed. The network may also be configured to adjust how the windows therein transition to prevent overloading the network. The techniques described herein can be used to design networks of electrochromic windows that are undersized when considering the amount of power that would be needed to simultaneously transition all the windows on the network using normal transition parameters, while still allowing simultaneous transitions to occur.
    Type: Grant
    Filed: April 10, 2019
    Date of Patent: March 23, 2021
    Assignee: View, Inc.
    Inventors: Jose Vigano, Stephen Clark Brown, Dhairya Shrivastava
  • Patent number: 10779905
    Abstract: Focusing optics for mode mixing may be used to homogenize different modes in an optical fiber used for surgical illumination. A vibration stage may impart mechanical motion to a condenser lens to generate a homogeneous illumination field from a coherent light source.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: September 22, 2020
    Assignee: Alcon Inc.
    Inventors: Cesario Dos Santos, Gerald David Bacher, Ronald Smith, Alireza Mirsepassi, Michael Papac
  • Patent number: 10284816
    Abstract: A mechanism is described for facilitating true three-dimensional (3D) virtual imaging on computing devices. A method of embodiments, as described herein, includes computing a virtual 3D model corresponding to an object. The method may further include computing and projecting, based the virtual 3D model, a unified surface image of the object via a dynamic 3D shape component, and generating and rendering a virtual image of the object based on the unified surface image such that the virtual image is capable of floating in air.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: May 7, 2019
    Assignee: INTEL CORPORATION
    Inventor: Ronald T. Azuma
  • Patent number: 10026363
    Abstract: A window display device includes a display screen provided in a transparent rear window glass pane of a vehicle, an operating device adapted to detect an action for operating the display screen, and a control device, which displays a shade on the display screen. The shade is movable to selectively open and close the display screen based on an action performed on the operating device.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: July 17, 2018
    Assignee: Toyota Shatai Kabushiki Kaisha
    Inventors: Naoto Iwakawa, Akihito Kouketsu
  • Patent number: 9462215
    Abstract: Projector display systems comprising a light dimmer and first modulator are disclosed. The light dimmer may comprise an adjustable iris, adjustable light sources and/or LCD stack that is capable of lowering the luminance of the light source illuminated the first modulator. The first modulator may comprise a plurality of analog mirrors (e.g. MEMS array) and the second modulator may comprise a plurality of mirrors (e.g., DMD array). The display system may further comprise a controller that sends control signals to the light dimmer and first modulator. The display system may render a desired dynamic range for rendering a projected image by a combination of such control signals.
    Type: Grant
    Filed: November 3, 2014
    Date of Patent: October 4, 2016
    Assignee: Dobly Laboratories Licensing Corporation
    Inventors: Douglas J. Gorny, Douglas Jason Darrow, Craig Todd
  • Patent number: 8922871
    Abstract: An electrowetting display device includes: a lower substrate, a pixel electrode disposed on the lower substrate, a lower water-repellent layer disposed on the pixel electrode, a plurality of partitions disposed on the lower water-repellent layer and an oil layer disposed on the lower water-repellent layer between the partitions, and wherein the partitions include a side wall having a reverse taper structure.
    Type: Grant
    Filed: August 22, 2012
    Date of Patent: December 30, 2014
    Assignee: Amazon Technologies, Inc.
    Inventors: Byung Seok Choi, Seung-Jin Baek, Ji Eun Lee, Wang Su Hong
  • Patent number: 8823605
    Abstract: An incandescent light source display includes a container and a number of incandescent light sources. The incandescent light sources are located in the container. Each of the incandescent light sources includes a first electrode, a second electrode and an incandescent element. The second electrode is spaced from the first electrode. The incandescent element is electrically connected to the first electrode and the second electrode. The incandescent element includes a carbon nanotube structure.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: September 2, 2014
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Peng Liu, Liang Liu, Kai-Li Jiang, Shou-Shan Fan
  • Patent number: 8810890
    Abstract: A laser light shaping and wavefront controlling optical system 1 in accordance with an embodiment of the present invention comprises an intensity conversion lens 24 for converting and shaping an intensity distribution of laser light incident thereon into a desirable intensity distribution; an optical modulation device 34 for modulating the laser light emitted from the intensity conversion lens 24 so as to control a wavefront thereof; a condenser optical system 36 for converging the laser light issued from the optical modulation device 34; and an image-forming optical system 30, arranged between the optical modulation device 34 and the condenser optical system 36, having an entrance-side imaging plane between a plane 24x where the laser light emitted from the intensity conversion lens 24 attains the desirable intensity distribution and a modulation plane 34a of the optical modulation device 34 and an exit-side imaging plane on a pupil plane 36a of the condenser optical system 36.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: August 19, 2014
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Haruyasu Ito, Takashi Yasuda
  • Publication number: 20140035959
    Abstract: The present invention provides a light field display device (300) comprising an array of light field display elements (310) populating a display surface, each display element (310) comprising: a beam generator (522) for generating an output beam of light; a radiance modulator (524) for modulating the radiance of the beam over time; a focus modulator (530) for modulating the focus of the beam over time; and a scanner (504, 506) for scanning the beam across a two-dimensional angular field.
    Type: Application
    Filed: August 4, 2012
    Publication date: February 6, 2014
    Inventor: Paul Lapstun
  • Patent number: 8638275
    Abstract: An incandescent light source display includes a substrate, a plurality of first electrode down-leads, a plurality of second electrode down-leads and a plurality of heating units. The plurality of first electrode down-leads are located on the substrate in parallel to each other and the plurality of second electrode down-leads are located on the substrate in parallel to each other. The first electrode down-leads cross the second electrode down-leads and corporately define a grid having a plurality of cells. Each of the incandescent light sources is located in correspondence with each of the cells. Each incandescent light source includes a first electrode, a second electrode and an incandescent element. The incandescent element includes a carbon nanotube structure.
    Type: Grant
    Filed: November 13, 2009
    Date of Patent: January 28, 2014
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Peng Liu, Liang Liu, Kai-Li Jiang, Shou-Shan Fan
  • Patent number: 8462420
    Abstract: A tunable plasmonic filter or an optical filtering method discloses plasmonic filter structure and a voltage or current source. An intensity or wavelength of light transmitted through the filter structure is modulated by the intensity of a voltage or current from the voltage or current source. The plasmonic filter structure is located between electrodes electrically connected to the voltage or current source. The plasmonic filter structure is configured such that the incident light is resonant with at least one plasmonic mode on the structure, and a predetermined wavelength will perturb the metallic plasmonic structure in surface plasmon on energy bands for the wavelength selective transmission of light.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: June 11, 2013
    Assignee: NanoLambda, Inc.
    Inventors: Byounghee Lee, Byung Il Choi
  • Publication number: 20130107346
    Abstract: A laser light shaping and wavefront controlling optical system 1 in accordance with an embodiment of the present invention comprises an intensity conversion lens 24 for converting and shaping an intensity distribution of laser light incident thereon into a desirable intensity distribution; an optical modulation device 34 for modulating the laser light emitted from the intensity conversion lens 24 so as to control a wavefront thereof; a condenser optical system 36 for converging the laser light issued from the optical modulation device 34; and an image-forming optical system 30, arranged between the optical modulation device 34 and the condenser optical system 36, having an entrance-side imaging plane between a plane 24x where the laser light emitted from the intensity conversion lens 24 attains the desirable intensity distribution and a modulation plane 34a of the optical modulation device 34 and an exit-side imaging plane on a pupil plane 36a of the condenser optical system 36.
    Type: Application
    Filed: July 13, 2011
    Publication date: May 2, 2013
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Haruyasu Ito, Takashi Yasuda
  • Patent number: 8106399
    Abstract: An electrophoretic display device includes a gate line on a substrate, a common line parallel to the gate line, a gate insulating layer on the gate line and the common line, a data line on the gate insulating layer, the data line crossing the gate line to define a pixel region, a thin film transistor connected to the gate line and the data line, the thin film transistor including a gate electrode, a semiconductor layer, a source electrode and a drain electrode, a first storage electrode extending from the common line, a first passivation layer over the thin film transistor, the gate line and the data line, the first passivation layer exposing the drain electrode, and a pixel electrode on the first passivation layer, the pixel electrode contacting the drain electrode and overlapping the gate line and the data line, wherein the pixel electrode includes a second storage electrode overlapping the first storage electrode, and the first and second storage electrodes form a storage capacitor with the gate insulating
    Type: Grant
    Filed: September 4, 2009
    Date of Patent: January 31, 2012
    Assignee: LG Display Co., Ltd.
    Inventor: Sung-Jin Park
  • Patent number: 7967452
    Abstract: A projection type display apparatus is provided that is safe even when a person looks directly into a laser beam. A laser operation control unit sets the output power of at least one laser source so that intensity A (mW/mm2) of the laser beam on at least one spatial light modulation element satisfies relationship of A<686√óB2 when numerical aperture B on image side of an illumination optics system is set.
    Type: Grant
    Filed: August 24, 2006
    Date of Patent: June 28, 2011
    Assignee: Panasonic Corporation
    Inventors: Tatsuo Itoh, Kazuhisa Yamamoto, Kenichi Kasazumi, Kiminori Mizuuchi
  • Publication number: 20100157408
    Abstract: A display device may include a substrate, a thin film layer formed on the substrate and/or having a light absorptance that varies according to an electric field applied to the thin film layer, and/or electrodes disposed to apply the electric field to the thin film layer and/or configured to change the electric field applied to the thin film layer.
    Type: Application
    Filed: December 8, 2009
    Publication date: June 24, 2010
    Inventor: Hyun-jong Chung
  • Publication number: 20100141556
    Abstract: The invention relates to an ophthalmic display comprising an optical imager both for shaping light beams emitted by a miniature screen of a light-beam generator system for generating light beams that are introduced into said imager via an inlet face, and for directing them towards the eye of the wearer so as to make it possible to view an image, an adapter being in a reference position relative to the imager, and said light-beam generator system including a connection arrangement for connection to said adapter, the connection between said system and said adapter being releasable. In the invention, said adapter is constituted by two snap-fastener hooks for housing in housings carried by said connection arrangement.
    Type: Application
    Filed: October 25, 2007
    Publication date: June 10, 2010
    Inventors: Renaud Moliton, Cecile Bonafos, Benjamin Rousseau
  • Patent number: 7719748
    Abstract: The disclosure relates to a method and apparatus for providing switching optical filter. The switching optical filter provides several functionalities at the same time. For example, the filter can be used to remove photons of undesirable wavelength, such as ultraviolet or infrared, while simultaneously switching from and between one mode to another in order to accommodate changing ambient light conditions. In one embodiment, the disclosure relates to a method for forming an optical filter, the method comprising: forming a first electrode layer on a substrate; forming an ion conductor layer to at least partially cover the first electrode layer; forming an optically transparent layer over the ion conductor layer, the optically transparent layer preventing transmission of photons having a first wavelength while transmitting photons of a second wavelength; and forming a second electrode layer to at least partially cover the optically transparent layer.
    Type: Grant
    Filed: May 20, 2008
    Date of Patent: May 18, 2010
    Assignee: Teledyne Scientific & Imaging LLC
    Inventors: Randolph L. Hall, Rand D. Dannenberg
  • Patent number: 7715082
    Abstract: An electrochromic switching device comprises a counter electrode, an active electrode and an electrolyte layer disposed between the counter electrode and the active electrode. The active electrode comprises at least one of an oxide, a nitride, an oxynitrides, a partial oxide, a partial nitride and a partial oxynitride of at least one of Sb, Bi, Si, Ge, Sn, Te, N, P, As, Ga, In, Al, C, Pb and I. Upon application of a current to the electrochromic switching device, a compound comprising at least one of the alkali and the alkaline earth metal ion and an element of the active electrode is formed as part of the active electrode.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: May 11, 2010
    Assignee: Soladigm, Inc.
    Inventors: Zhongchun Wang, Paul P. Nguyen
  • Publication number: 20100046060
    Abstract: A tunable plasmonic filter or an optical filtering method discloses plasmonic filter structure and a voltage or current source. An intensity or wavelength of light transmitted through the filter structure is modulated by the intensity of a voltage or current from the voltage or current source. The plasmonic filter structure is located between electrodes electrically connected to the voltage or current source. The plasmonic filter structure is configured such that the incident light is resonant with at least one plasmonic mode on the structure, and a predetermined wavelength will perturb the metallic plasmonic structure in surface plasmon on energy bands for the wavelength selective transmission of light.
    Type: Application
    Filed: December 21, 2007
    Publication date: February 25, 2010
    Inventors: Byounghee Lee, Byung Il Choi
  • Publication number: 20090027759
    Abstract: There is disclosed an automatic electronic window shading (tinting) system for houses and transport vehicles such as automobiles, RV's, trains, boats and the like, to provide shading for people to protect them from exposure to harmful direct sunlight, by providing the windows of said houses and transport vehicles with display elements and light (photocell/photovoltaic) sensors. The system comprises liquid crystal, electrochromic, suspended particle device (SPD), or NanoChromics display (NCD) element attached to a part of a transparent body (such as the windows) and a liquid crystal, electrochromic, suspended particle device (SPD), or NanoChromics display (NCD) controlling semiconductor element controlling the operation of the display element.
    Type: Application
    Filed: July 23, 2007
    Publication date: January 29, 2009
    Applicant: UNIVERSITY OF KUWAIT
    Inventor: Tareq Abduljalil Albahri
  • Patent number: 7136213
    Abstract: An iterferometric modulator is formed having a dielectric with charge persistence. The interferometric modulator is addressed by a method making advantageous use of the charge persistence property, wherein the interferometric modulator is pre-charged in such a way that the pre-charging is not observable to a viewer, and the actuation voltage threshold of the imod is significantly lowered. Subsequently the interferometric modulator may be actuated with a significantly lower actuation voltage, thereby saving power.
    Type: Grant
    Filed: August 15, 2005
    Date of Patent: November 14, 2006
    Assignee: IDC, LLC
    Inventor: Clarence Chui
  • Patent number: 6903871
    Abstract: A three-dimensional surface shape is produced from input numerical data. The shape of a sheet elastic material is determined by the positions of a matrix of control rods. The position of each of the rods is determined by a computer-controlled system. Each rod is fitted with two pneumatically controlled locking mechanisms, one for the X coordinate and one for the Y coordinate. When both locks on a particular rod are released the rod is free to move to a new position determined by an elevator. Once all of the rods have been adjusted they are locked in position and the surface has been configured. In one application, the surface can be used as a mold for casting a replica or in another application can be used as the screen in an image projection system.
    Type: Grant
    Filed: January 9, 2002
    Date of Patent: June 7, 2005
    Inventor: Derrick John Page
  • Patent number: 6897992
    Abstract: Disclosed is an illuminating optical unit in an image display unit for displaying an image by irradiating a GLV (spatial modulation device) with a laser beam and modulating the laser beam based on an image signal inputted to the GLV, which includes a polarized light rotation means for equally dividing a polarized light component of the laser beam into a P polarized light component and an S polarized light component, a polarized light beam splitter for separating from each other the P polarized light component and the S polarized light component equally divided by the polarized light rotation means, and an optical path difference generation means for generating an optical path difference not less than the coherence length of the laser beam between the laser beam of the P polarized light component and the laser beam of the S polarized light component.
    Type: Grant
    Filed: October 6, 2003
    Date of Patent: May 24, 2005
    Assignee: Sony Corporation
    Inventor: Hiroki Kikuchi
  • Patent number: 6865641
    Abstract: In one form of the invention, an apparatus for visually displaying a non-volatile message includes an integrated circuit having first circuitry. The apparatus also includes a package for the integrated circuit and a display affixed to the integrated circuit package. The first circuitry is coupled to the display and operable to be coupled to an electronic device by pins of the integrated circuit package and to write a non-volatile, visual image via the display responsive to receiving a message from the electronic device.
    Type: Grant
    Filed: August 29, 2002
    Date of Patent: March 8, 2005
    Assignee: International Business Machines Corporation
    Inventor: Robert Christopher Dixon
  • Publication number: 20040263942
    Abstract: The present invention provides a first pixel array and a second pixel array disposed along an optical path. The first pixel array is adapted to generate an image. The second pixel array is adapted to adjust an output luminescence of the image.
    Type: Application
    Filed: June 24, 2003
    Publication date: December 30, 2004
    Inventors: Matthew Grant Lopez, Nancy Eng Wilson, John F. Wilson
  • Publication number: 20040233504
    Abstract: The present invention is related to an optical element that carries out the full complex phase and amplitude modulation of light wave fronts. The phase modulation can be attained by changing the optical pathway (for example, by changing the thickness or introducing a relief upon the optical surface) and the amplitude modulation is carried out by blocking the light pathway, (for example, by reflecting, absorbing, attenuating, blocking, polarizing or changing the polarization of the light.
    Type: Application
    Filed: December 12, 2003
    Publication date: November 25, 2004
    Inventors: Luiz Goncalves, Ronaldo Mansano, Giuseppe A. Cirino, Patricia S. P. Cardona, Patrick B. Verdonck
  • Patent number: 6665108
    Abstract: A system for the production of a dynamic image for use in display applications includes a light source (16) which travels via a liquid crystal modulator (18) placed in the path of the light source (16). The output of the LC modulator (18) passes modulated light a lens ray (22) which itself guides light to an optically addressed spatial light modulator (24). The resulting real image from the optically addressed spatial light modulator (24) may be used in two dimensional and three dimensional displays. The addressing frame-rate of the liquid crystal modulator (18) is substantially greater than the frame-rate of the optically addressed spatial light modulator (24).
    Type: Grant
    Filed: July 9, 2002
    Date of Patent: December 16, 2003
    Assignee: Holographic Imaging LLC
    Inventors: Carl V Brown, Maurice Stanley
  • Patent number: 6580560
    Abstract: An apparatus and method for a laser light display projector for projecting a beam of laser light so as to produce a light pattern forming a visually perceptible light image includes a laser light source generating a substantially parallel light beam; a diffuser positioned so that the light beam passes therethrough prior to forming the visually perceptible display, the diffuser having a diffusion pattern effective for diffusing the light beam by a predetermined amount; a rotary actuator bearing the diffuser to thereby impart a rotating motion to the diffuser so that the diffusion pattern rotatably intersects the light beam; and a controller operatively connected to at least the rotary actuator to control rotational positioning of the diffuser in the light beam.
    Type: Grant
    Filed: February 1, 2002
    Date of Patent: June 17, 2003
    Inventor: William R. Benner, Jr.
  • Publication number: 20030035190
    Abstract: A system for the production of a dynamic image for use in display applications includes a light source (16) which travels via a liquid crystal modulator (18) placed in the path of the light source (16). The output of the LC modulator (18) passes modulated light a lens ray (22) which itself guides light to an optically addressed spatial light modulator (24). The resulting real image from the optically addressed spatial light modulator (24) may be used in two dimensional and three dimensional displays. The addressing frame-rate of the liquid crystal modulator (18) is substantially greater than the frame-rate of the optically addressed spatial light modulator (24).
    Type: Application
    Filed: July 9, 2002
    Publication date: February 20, 2003
    Applicant: Holographic Imaging LLC
    Inventors: Carl V. Brown, Maurice Stanley
  • Patent number: 6437919
    Abstract: A system for the production of a dynamic image for use in holography includes a light source (16) which travels via a liquid crystal modulator (18) placed in the path of the light source (16). The output of the LC modulator (18) passes modulated light through a lens array (22) which itself guides light to an optically addressed spatial light modulator (24). The resulting real image from the optically addressed spatial light modulator (24) may be used in holography. The addressing frame-rate of the liquid crystal modulator (18) is substantially greater than the frame-rate of the optically addressed spatial light modulator (24).
    Type: Grant
    Filed: June 13, 2000
    Date of Patent: August 20, 2002
    Assignee: Holographic Imaging LLC
    Inventors: Carl V Brown, Maurice Stanley
  • Patent number: 6388797
    Abstract: A pair of stereoscopic eyewear includes an element for integral assembly with the eyewear including a conductive circuit trace. The conductive pattern provides electrical contact between a contact area of the frame (which is hardwired to an electrical cable) and the contact pads of the liquid crystal shutter pair. Preferably, a conductive elastomer is used to facilitate the electrical contact to the shutters and the frame. Additionally, each wire of the cable is terminated with a fixed electrical contact adapted to securely mate with a slot in the frame that correspond to the contact area. A lens assembly attaches to the frame to rigidly hold the frame, the shutters and the conductive trace in intimate juxtapostion.
    Type: Grant
    Filed: October 22, 1999
    Date of Patent: May 14, 2002
    Assignee: StereoGraphics Corporation
    Inventors: Lenny Lipton, Jeffrey James Halnon, William McKee
  • Patent number: 6359723
    Abstract: A system for producing modulated light is disclosed. The system comprises a spatial light modulator including a light modulating medium switchable between different states so as to act on light in ways which form overall patterns of modulated light. The system also includes an arrangement for switching the modulating medium between the different states in a controlled way and an illumination arrangement for producing a source of light. The system further includes an optics arrangement for directing light from the source of light into the spatial light modulator and for directing light from the spatial light modulator through a predetermined source imaging area. The optics arrangement cooperates with the illumination arrangement and the spatial light modulator so as to produce a real image of the source of light within the source imaging area such that an individual is able to view a virtual image of the overall patterns of modulated light from the source imaging area.
    Type: Grant
    Filed: December 13, 2000
    Date of Patent: March 19, 2002
    Assignee: Displaytech, Inc.
    Inventors: Mark A. Handschy, Michael R. Meadows, Holden Chase
  • Patent number: 6130774
    Abstract: An electrophoretic display element includes a capsule having a first, larger surface and a second, smaller surface. The capsule contains a suspending fluid and at least one particle dispersed within said suspending fluid. Application of a first electrical field causes the particle or particles to migrate towards the first, larger surface of the capsule, causing it to take on the visual appearance of the particles. Application of a second electrical field causes the particle or particles to migrate towards the second, smaller surface, allowing the capsule to take on the visual appearance of the dispersing fluid or of a substrate or electrode positioned behind the display element. Displays may be fabricated from multiple display elements arranged on a substrate.
    Type: Grant
    Filed: April 27, 1999
    Date of Patent: October 10, 2000
    Assignee: E Ink Corporation
    Inventors: Jonathan D. Albert, Barrett Comiskey
  • Patent number: 6055086
    Abstract: A method and apparatus for modulating a light beam in an optical processing system is described. Preferably, an electrically-controlled polarizer unit and/or an analyzer unit are utilized in combination with a spatial light modulator and a controller. Preferably, the spatial light modulator comprises a pixelated birefringent medium such as a liquid crystal video display. The combination of the electrically controlled polarizer unit and analyzer unit make it simple and fast to reconfigure the modulation described by the Jones matrix of the spatial light modulator. A particular optical processing objective is provided to the controller. The controller performs calculations and supplies control signals to the polarizer unit, the analyzer unit, and the spatial light modulator in order to obtain the optical processing objective.
    Type: Grant
    Filed: July 27, 1998
    Date of Patent: April 25, 2000
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Colin Soutar, Richard D. Juday
  • Patent number: 5949569
    Abstract: A projection display apparatus includes a light source, a spatial light modulation device, a condenser lens, an aperture stop, and a projecting lens. When the spatial period of complex amplitude modulation in the spatial light modulation device is represented by p, the center wavelength of the incident light is represented by .lambda., and a half angle subtended by an area around an opening edge of the aperture stop at the condenser lens along the first direction is represented by .theta.asx, parameters of the light source, the spatial light modulation device, the condenser lens, the screen, the aperture stop and the projecting lens and a relative positional relationship therebetween are defined such that the following condition is satisfied:0.35<.theta.asx/arcsin(.lambda./p)<0.6.
    Type: Grant
    Filed: February 7, 1997
    Date of Patent: September 7, 1999
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Kei Shimura
  • Patent number: 5859735
    Abstract: An optical element (8) is provided on a substrate, for example a display screen (3) of a display device (1), which optical element comprises a light-transmitting layer whose transmission in the visible region varies in response to a change in ambient light. The optical element (8) is characterized in that it further comprises a colored coating which selectively absorbs light in the visible region. The colored coating has such an absorption characteristic that the color coordinates (x;y) of the combination of the light-transmitting layer and the colored coating vary in such a way, as a result of a variation in ambient light, that a line, which interconnects the color coordinates, is partly situated in an elliptical area with achromatic point (0.333;0.333) in the color triangle, which ellipse comprises a major axis and a minor axis, which major axis terminates in (0.30;0.28) and (0.36;0.38) and the eccentricity of which ranges between 2 and 3.
    Type: Grant
    Filed: February 18, 1997
    Date of Patent: January 12, 1999
    Assignee: U.S. Philips Corporation
    Inventor: Gosse C. De Vries
  • Patent number: 5859728
    Abstract: A method and apparatus for modulating a light beam in an optical processing system is described. Preferably, an electrically-controlled polarizer unit and/or an analyzer unit are utilized in combination with a spatial light modulator and a controller. Preferably, the spatial light modulator comprises a pixelated birefringent medium such as a liquid crystal video display. The combination of the electrically controlled polarizer unit and analyzer unit make it simple and fast to reconfigure the modulation described by the Jones matrix of the spatial light modulator. A particular optical processing objective is provided to the controller. The controller performs calculations and supplies control signals to the polarizer unit, the analyzer unit, and the spatial light modulator in order to obtain the optical processing objective.
    Type: Grant
    Filed: October 24, 1994
    Date of Patent: January 12, 1999
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Soutar Colin, Richard D. Juday
  • Patent number: 5617243
    Abstract: An electro-optical system such as an image display system and a method of displaying images are described. Laser beams of three primary colors are emitted from three lasers in a time sharing mode. These laser beams are directed onto the same optical path and then separately given optical information from the same optical modulating device in accordance with images of the respective primary colors. By this structure, displacement of constituent color images can be effectively avoided.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: April 1, 1997
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Yasuhiko Takemura
  • Patent number: 5218469
    Abstract: A technique for reducing interpixel crosstalk by selecting particular illumination conditions and thus tailoring a portion of the spatial frequency response of an optical image bar. A desirable frequency response is one that approximates sin(.pi.Pf) for absolute values of f less than about 1/P, where f is the spatial frequency and P is the minimum pixel pitch. A skew angle of zero and a grazing angle that is approximately twice the interorder diffraction angle provides the desired cutoff of the response for absolute values of f above about 1/P. The desired frequency response for absolute values of f near zero can be achieved by selecting appropriate values for other physical parameters.
    Type: Grant
    Filed: December 31, 1991
    Date of Patent: June 8, 1993
    Assignee: Xerox Corporation
    Inventor: David L. Hecht
  • Patent number: 5170281
    Abstract: A spatial light modulator includes an electro-optic crystal plate and a mesh electrode for capturing secondary electrons emitted from the crystal plate. Primary electrons carrying an image corresponding to an input optical image are incident on the front surface of the crystal plate to write a charge pattern thereon. In a writing operation, a dc voltage and a ramp voltage is applied to the mesh electrode and the back surface of the crystal plate, respectively. The dc voltage and a variation range of the ramp voltage are shifted to obtain a desired input/output characteristic of the device. Alternatively, a decreasing rate of the ramp voltage is changed to obtain a desired characteristic.
    Type: Grant
    Filed: April 8, 1991
    Date of Patent: December 8, 1992
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Yuji Kobayashi, Tsutomu Hara, Haruyoshi Toyoda
  • Patent number: 5115228
    Abstract: The present invention accomplishes the above objects by employing a display having the capability to emit light and form images viewable from both the front and back of the display. The invention also shutters the images displayed on the front and back of the display so that the images can be correctly displayed depending on the viewpoint of the viewer. Text and images displayed such that they are seen from both the front and back of the display appear differently to the front and rear viewer. Electronic shutters are placed between the display and both the front and rear viewers so that they can be flashed on and off fast enough to provide a stable image appearing to each viewer. The shutters also flash slow enough so that display data can be rewritten to provide each viewer with a correct image. The correct image can be either the corrected image of that image seen by the opposing viewer, or a completely separate image. In this way, simultaneous images appear to both the front and rear viewer.
    Type: Grant
    Filed: August 2, 1990
    Date of Patent: May 19, 1992
    Assignee: International Business Machines Corporation
    Inventors: Richard H. Harris, Richard G. Minor, Robert W. Price