With Particular Electrode Structure Or Arrangement, Or Medium Mounting Structure Or Arrangement Patents (Class 359/254)
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Patent number: 8908251Abstract: A tunable metamaterial has a two dimensional array of resonant annular ring elements; and a plurality of voltage controllable electrical tuning elements disposed in or adjacent openings in each of said ring elements, each of said voltage controllable electrical tuning element ohmically contacting portions of only one of said ring elements. The voltage controllable electrical tuning elements may comprise highly doped semiconductor tunnel diodes, or the charge accumulation layer at the semiconductor/insulator interface of a metal-insulator-semiconductor structure, or nanoelectromechanical (NEMs) capacitors. The tunable metamaterial may be used, for example, in an optical beam steering device using the aforementioned tunable optical metamaterial in which a free-space optical beam is coupled into a receiving portion of a plane of the optical metamaterial and is steered out of a transmitter portion of the plane of the optical metamaterial in controllable azimuthal and elevational directions.Type: GrantFiled: January 30, 2013Date of Patent: December 9, 2014Assignee: HRL Laboratories, LLCInventors: Keyvan Sayyah, James H. Schaffner, Pamela R. Patterson
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Patent number: 8908254Abstract: Optical apparatus for a display device. The optical apparatus comprises a cavity, and a first fluid (14) and a second fluid (16), held within the cavity, which are immiscible with each other. The first and second fluids are separated from each other by a meniscus (28) having a peripheral edge (30). The optical apparatus further comprises a fluid motion control system arranged to control movement of the first and second fluids within the cavity using electrostatic forces, and a first surface (26) and a second surface (21). The first surface has a different wettability for the first fluid than for the second surface. The first and second surfaces are arranged in the cavity to determine, upon activation of the fluid motion control system, a motion of the fluids within the cavity which has a preferential initiation at a first part (32) of the peripheral edge.Type: GrantFiled: June 1, 2007Date of Patent: December 9, 2014Assignee: Amazon Technologies, Inc.Inventors: Bokke Johannes Feenstra, Roy Van Dijk, Robert A. Hayes
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Patent number: 8854596Abstract: An active optical device includes a substrate; a plurality of refractive index variable regions formed on the substrate; and a voltage applier which applies an electric field to the plurality of refractive index variable regions.Type: GrantFiled: September 13, 2011Date of Patent: October 7, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Sun-il Kim, Jun-hee Choi
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Patent number: 8830561Abstract: The present invention is directed to an electrophoretic display comprising: (a) microcups comprising partition walls and top-openings; (b) an organic-based electrophoretic fluid filled in the microcups, wherein said fluid comprises charged pigment particles dispersed in a solvent; and (c) a top-sealing layer formed from a sealing composition to enclose the electrophoretic fluid within the microcups. The sealing composition comprises: (i) a water soluble polymer, (ii) a water-based suspension, a water-based dispersion, a water-based emulsion, or a water-based latex, each comprising a polymer; and (iii) water.Type: GrantFiled: March 21, 2012Date of Patent: September 9, 2014Assignee: E Ink California, LLCInventors: HongMei Zang, Hui Chen
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Patent number: 8824036Abstract: A thermally stabilized, high speed, micrometer-scale silicon electro-optic modulator is provided. Methods for maintaining desired temperatures in electro-optic modulators are also provided. The methods can be used to maintain high quality modulation in the presence of thermal variations from the surroundings. Direct current injection into the thermally stabilized electro-optic modulator is used to maintain the modulation performance of the modulator. The direct injected current changes the local temperature of the thermally stabilized electro-optic modulator to maintain its operation over a wide temperature range.Type: GrantFiled: March 19, 2010Date of Patent: September 2, 2014Assignee: Cornell UniversityInventors: Sasikanth Manipatruni, Rajeev Dokania, Alyssa B. Apsel, Michal Lipson
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Patent number: 8804226Abstract: An optical modulator unit, an optical modulator, and a method of fabricating are provided. The optical modulator unit includes a first contact layer transmitting infrared rays, a lower reflection layer disposed on the first contact layer, an active layer, including a multiple quantum well, disposed on the lower reflection layer, and an upper reflection layer disposed on the active layer. The optical modulator includes a plurality of optical modulator units sharing the first contact layer. The method includes sequentially stacking a first contact layer, a lower reflection layer, an active layer, an upper reflection layer, and a second contact layer on a substrate; etching the second contact layer, the upper reflection layer, the active layer, and the lower reflection layer, exposing a surface of the first contact layer; forming a first electrode on the first contact layer; and forming a second electrode on the second contact layer.Type: GrantFiled: June 25, 2012Date of Patent: August 12, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Sang-hun Lee, Chang-young Park, Jo-ho Lee
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Patent number: 8792752Abstract: Provided is an optical waveguide element module which suppresses reflection of a modulation signal and attenuation of a modulation signal, even when an impedance of a modulation electrode of an optical waveguide element and an impedance of a transmission line for inputting the modulation signal from the external of the optical waveguide element are different from each other. The optical waveguide element module is provided with an optical waveguide element, which has a substrate (1) composed of a material having electro-optical effects, an optical waveguide (2) formed on the substrate, and a modulation electrode (3) which modules optical waves propagating in the optical waveguide; a connector (8), wherein an external signal line which inputs the modulation signal to the modulation electrode is connected to the modulation electrode; and a relay line which connects the connector and the modulation electrode and is formed on a relay substrate (7).Type: GrantFiled: July 3, 2009Date of Patent: July 29, 2014Assignee: Sumitomo Osaka Cement Co., Ltd.Inventors: Ryo Shimizu, Toru Sugamata
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Patent number: 8784675Abstract: The ferroelectric substrate 11 of ferroelectric crystals, while being supported by the support plate 14 which is thicker than the ferroelectric substrate 11, is integrated with the support plate 14 by letting the junction 13 mediate between one major surface S1A of the ferroelectric substrate 11 and one major surface S1B of the support plate 14, and therefore, it is possible through the flat surface polishing to perform thinning of the ferroelectric substrate 11, namely, the ferroelectric crystals, and as a result, it is possible to obtain the thin periodically poled structure. By the voltage application method, the domain inverted region is formed in the ferroelectric substrate 11 which is made thin.Type: GrantFiled: August 9, 2011Date of Patent: July 22, 2014Assignee: Dainippon Screen Mfg. Co. Ltd.Inventors: Masahide Okazaki, Toshiaki Suhara
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Patent number: 8776514Abstract: A microactuator for displacing a platform vertically with respect to a substrate includes a first rigid frame, a first flexible bimorph beam connecting the first frame to the substrate, a second rigid frame, a second flexible bimorph beam connecting the second frame to the first frame, and a third flexible bimorph beam connecting a platform to the second frame. Activation of the first, second, and third flexible bimorph beams allows vertical displacement of the platform with respect to the substrate, with negligible lateral shift. A microactuator assembly includes a substrate, a plurality of first rigid frames, a plurality of first flexible bimorph beams, a plurality of second rigid frames, a plurality of second flexible bimorph beams, a platform, and a plurality of third flexible bimorph beams. Activation of the first, second, and third bimorph beams allows vertical displacement of the platform with respect to the substrate, with negligible lateral shift.Type: GrantFiled: December 15, 2008Date of Patent: July 15, 2014Inventors: Lei Wu, Huikai Xie
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Patent number: 8773749Abstract: A variable focusing lens is provided that can change the focal length at a high speed. The variable focusing lens includes: a single crystal electrooptic material having inversion symmetry; a first anode formed on a first surface of the electrooptic material; a second cathode provided to have an interval to the first anode; and a first cathode and a second anode that are formed on a second surface opposed to the first surface and that are formed at positions opposed to the first anode and the second cathode. An optical axis is set so that, when light enters through a third face orthogonal to the first surface, light exists through a fourth surface opposed to the third face. A voltage applied between the first and the second pair of electrodes is changed to thereby change the focal point of light emitted from the fourth surface of the electrooptic material.Type: GrantFiled: June 11, 2010Date of Patent: July 8, 2014Assignee: Nippon Telegraph and Telephone CorporationInventors: Tadayuki Imai, Masahiro Sasaura, Jun Miyazu, Shogo Yagi, Seiji Toyoda
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Patent number: 8761549Abstract: A component, device and improved electro-optical modulation system for increasing compactness, favoring the adaptation of optical and electrical waves, and a method of fabrication. Such a component exhibits a waveguide architecture devised so that the length of the path followed by the luminous flux exhibits, with the length of the path traversed by the electrical control signal, a determined difference for decreasing or compensating for the difference in the speeds of propagation of the luminous flux and of the electrical signal. In particular, the modulation zone includes a path of the luminous flux winding around itself and successively crossing at least two indentations emanating from at least two of these control elements. It thus exhibits a length greater than that traversed by the electrical signal, for example between a first and a second region of interaction between this control signal and this luminous flux.Type: GrantFiled: September 29, 2010Date of Patent: June 24, 2014Assignees: Universite Paris Sud 11, Centre National de la Recherche ScientifiqueInventors: Gilles Rasigade, Laurent Vivien, Delphine Marris-Morini
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Patent number: 8721074Abstract: Ophthalmic lenses, including contact lenses may be enhanced through the incorporation of both active and passive electrical components. Electrical interconnects and die attachment configurations are required to ensure electrical connectivity between the components and the optic portion of the lens as well as providing a means for mounting planar devices on spherical surfaces. Electrical interconnects and die attachment for powered ophthalmic devices, including contact lenses includes realizing conductive traces on optical plastic, attaching planar dies to spherical surfaces and underfilling, overmolding and light blocking to complete the lens.Type: GrantFiled: May 29, 2012Date of Patent: May 13, 2014Assignee: Johnson & Johnson Vision Care, Inc.Inventors: Randall Braxton Pugh, Adam Toner, Praveen Pandojirao-S, James Daniel Riall, Daniel B. Otts, Edward Kernick
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Patent number: 8711464Abstract: A protection circuit includes: a first electrode; a second electrode; and an ionic material which comes into contact with the first electrode and the second electrode, wherein when a given difference in potential is generated between the first electrode and the second electrode, an electric current flows between the first electrode and the second electrode through the ionic material.Type: GrantFiled: December 7, 2010Date of Patent: April 29, 2014Assignee: Seiko Epson CorporationInventor: Yukimasa Ishida
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Patent number: 8712195Abstract: Disclosed is an optical modulator module including an optical modulator configured to have a signal electrode and a ground electrode; a conductive package configured to accommodate the optical modulator and have electrical continuity with the ground electrode of the optical modulator; a substrate configured to have a ground electrode on a first surface thereof electrically connected to the package by solder or a conductive adhesive and have a signal electrode on another surface thereof; and a lead pin configured to electrically connect the signal electrode of the optical modulator to the signal electrode of the substrate.Type: GrantFiled: May 26, 2011Date of Patent: April 29, 2014Assignee: Fujitsu Optical Components LimitedInventor: Masaki Sugiyama
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Patent number: 8693081Abstract: A device and method of making and using the same. The device includes first and second substrates that are spaced to define a fluid space. Polar and non-polar fluids occupy the fluid space. A first electrode, with a dielectric layer, is positioned on the first substrate and electrically coupled to at least one voltage source, which is configured to supply an electrical bias to the first electrode. The fluid space includes at least one fluid splitting structure that is configured to facilitate the movement of the non-polar fluid into a portion of the polar fluid. Fluid splitting structure assisted movement of the non-polar fluid splits the polar fluid.Type: GrantFiled: September 29, 2011Date of Patent: April 8, 2014Assignee: University of CincinnatiInventors: Jason Heikenfeld, Matthew Hagedon, Kenneth Dean Andrew
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Patent number: 8623191Abstract: A device and method for displaying grey levels on electronic paper is provided. According to various embodiments, a system for electronic paper can include an electret substrate embedded with at least one first capsule containing a first plurality of charged pigment particles and at least one second capsule containing a second plurality of charged pigment particles. The system can further include a first electrode interfacing with one side of the electret substrate and a second electrode interfacing with a second side of the electret substrate. The first plurality of charged pigment particles can move in the direction of one of the first and second electrodes having a polarity that is opposite to that of the first plurality of the charged pigment particles in response to a voltage applied to the first and second electrodes that is greater than a first threshold.Type: GrantFiled: September 22, 2006Date of Patent: January 7, 2014Assignee: Honeywell International Inc.Inventor: Andrei Cernasov
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Publication number: 20130342887Abstract: Spatial light modulator configured as a periodic structure of polymer grating layers arranged essentially at equal distances and intermediate spaces to form a periodic grating structure. The surfaces bounding the periodic grating structure have electrodes influencing the refractive index of the active optical medium by an electric field. The electrodes have a pixelated arrangement and can be driven independently of each other with an electrical voltage. The orientation layer thickness and grating period of the periodic grating structure are configured so that they do not correspond to the Bragg condition for the light from at least one light source, and so that for light from the at least one light source incident on the spatial light modulator the light fraction deviated owing to Bragg diffraction is less than the undeviated transmitted light fraction.Type: ApplicationFiled: June 19, 2013Publication date: December 26, 2013Inventors: Norbert LEISTER, Gerald FUETTERER
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Patent number: 8599465Abstract: A method for making an electrowetting device includes: (a) forming a surrounding wall on an upper surface of a substrate to surround a microchamber, the surrounding wall having an inner surface surrounding the microchamber and a top surface above the inner surface, the upper surface of the substrate being non-hydrophobic; (b) coating the surrounding wall and the upper surface of the substrate with a hydrophobic coating material; (c) removing a portion of the hydrophobic coating material formed on the top surface of the surrounding wall, thereby exposing the top surface of the surrounding wall; and (d) disposing a liquid into the microchamber.Type: GrantFiled: September 23, 2010Date of Patent: December 3, 2013Assignee: Incha HsiehInventor: Incha Hsieh
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Patent number: 8587856Abstract: A nonlinear optical system comprises a metallic film having a first side and a second side. The nonlinear optical system further comprises a regular array of slits in the metallic film. The slits connect the first and second sides of the metallic film. The array is configured to selectively transmit through the metallic film light having frequencies of a selected frequency band. The nonlinear optical system still further comprises a nonlinear optical material situated within the slit.Type: GrantFiled: March 7, 2008Date of Patent: November 19, 2013Assignee: Alcatel LucentInventors: Gang Chen, Ronen Rapaport
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Patent number: 8570636Abstract: A display element is described. The display element includes: a network; a continuous phase; and a discontinuous mobile phase, which is capable of responding to an externally applied electric field such that under influence of the externally applied electric field, without effecting bulk movement of the continuous phase, the mobile phase displaces from one location to another location through or within the network. A process of manufacturing a display cell is also described. The process includes: obtaining a pair of electrodes; placing a network between the electrodes; assembling the electrodes and the network to form a sub-assembly; and injecting into the subassembly a discontinuous phase.Type: GrantFiled: April 18, 2008Date of Patent: October 29, 2013Assignee: Zikon Inc.Inventors: Mateusz Bryning, Zbigniew Bryning, Remy Cromer
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Patent number: 8565559Abstract: To achieve high-speed optical modulation using a crystal having a complicated refractive index characteristic with respect to applied electric field, provided is an optical device comprising a substrate; a dielectric film that is formed on the substrate and includes a first optical waveguide and a second optical waveguide that run parallel to each other; a transmission line that is formed on the dielectric film and includes a signal line arranged between the first optical waveguide and the second optical waveguide, a first bias electrode, and a second bias electrode, the first bias electrode and the second bias electrode arranged respectively in a first region that is on a side of the first optical waveguide opposite the second optical waveguide and a second region on a side of the second optical waveguide opposite the first optical waveguide; and a drive circuit section that respectively applies a first bias voltage and a second bias voltage differing from each other to the first bias electrode and the seconType: GrantFiled: October 20, 2011Date of Patent: October 22, 2013Assignee: Advantest CorporationInventor: Hideo Hara
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Patent number: 8526090Abstract: An optical modulator device includes a body portion operative to propagate an optical mode along a longitudinal axis of the body portion, the body portion comprising a first layer disposed on a second layer, wherein the first layer includes a first p-type doped region adjacent to a first n-type doped region along the longitudinal axis of the body portion, and the second layer includes a second n-type doped region disposed on the first p-type doped region and a second p-type doped region adjacent to the second n-type doped region along the longitudinal axis of the body portion, the second p-type doped region disposed on the first n-type doped region.Type: GrantFiled: June 28, 2012Date of Patent: September 3, 2013Assignee: International Business Machines CorporationInventors: William M. Green, Jessie C. Rosenberg, Yurii A. Vlasov
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Patent number: 8514475Abstract: An electro-optic device includes an electro-optic crystal having a predetermined thickness, a first face and a second face. The electro-optic device also includes a first electrode substrate disposed opposing the first face. The first electrode substrate includes a first substrate material having a first thickness and a first electrode coating coupled to the first substrate material. The electro-optic device further includes a second electrode substrate disposed opposing the second face. The second electrode substrate includes a second substrate material having a second thickness and a second electrode coating coupled to the second substrate material. The electro-optic device additionally includes a voltage source electrically coupled to the first electrode coating and the second electrode coating.Type: GrantFiled: October 27, 2010Date of Patent: August 20, 2013Assignee: Lawrence Livermore National Security, LLCInventors: Robert J. Deri, Mark A. Rhodes, Andrew J. Bayramian, John A. Caird, Mark A. Henesian, Christopher A. Ebbers
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Patent number: 8493645Abstract: An optically powered optical modulator comprises an optical modulation component, such as an electro-optical modulator, acousto-optic modulator or magneto-optic modulator, in combination with one or two lens assemblies positioned at one or both apertures of the optical modulation component, so that the optical modulator formed by the combination of the lens assembly or assemblies and the optical modulation component has optical focus power.Type: GrantFiled: August 7, 2012Date of Patent: July 23, 2013Assignee: PV Labs, Inc.Inventor: Eiji Yafuso
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Patent number: 8488227Abstract: To include a light modulator having an anode electrode, a matching resistor, a first wire that is connected to the anode electrode and transmits to the anode electrode an input electric signal to the light modulator, a first conductor pad having a capacitor connected to the first wire, a second wire that connects the anode electrode and the matching resistor, and a second conductor pad having a capacitor connected to the second wire.Type: GrantFiled: April 29, 2011Date of Patent: July 16, 2013Assignee: Mitsubishi Electric CorporationInventors: Toshitsugu Uesugi, Hiroshi Aruga
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Patent number: 8446657Abstract: Embodiments relate to a method and apparatus for producing polarized light, having a modulator crystal, where the modulator crystal incorporates a birefringent electro-optic material. The modulator crystal has an optic axis, a first polarization axis, and a second polarization axis, where the first polarization axis and second polarization axis are each perpendicular to the optic axis and perpendicular to each other. The apparatus can also include an electrode pair, where application of an electric field modulates light passing through the modulator crystal that is polarized along the first polarization axis. Embodiments pertain to a method and apparatus for modulating light. The apparatus incorporates a modulator crystal having an electro-optic material. The device also has at least two electrode pairs, where each electrode pair modulates light passing through the modulator crystal that has a direction of travel that has a component parallel to the optic axis.Type: GrantFiled: August 21, 2012Date of Patent: May 21, 2013Assignee: University of Florida Research Foundation, Inc.Inventors: Volker M. Quetschke, Wan Wu, Luke Williams, Muzammil A. Arain, Rodica Martin, David Reitze, David B. Tanner, Guido Mueller
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Patent number: 8411349Abstract: An optical modulator includes an optical modulation substrate, an electrical length adjusting substrate, a package containing the substrates, and a plurality of input ports for inputting high frequency electrical signals. The optical modulation substrate includes a substrate body made of an electro-optic material, a ground electrode and a plurality of signal electrodes provided on the substrate body, optical waveguides propagating lights interacting with the signal electrodes, respectively, and electrode input ports inputting the high frequency electrical signals into the signal electrodes, respectively. The signal electrode includes an interacting part, an input end part provided between the electrode input port and interacting part, and a terminal part. The electrical length adjusting substrate includes conductive lines connected to the input ports for inputting the high frequency electrical signals, respectively.Type: GrantFiled: February 8, 2011Date of Patent: April 2, 2013Assignee: NGK Insulators, Ltd.Inventors: Osamu Mitomi, Yasunori Iwasaki, Yuji Hori, Kenji Aoki, Jungo Kondo
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Patent number: 8390175Abstract: An optical device includes: an optical device body; a first transparent electrode film deposited on a light incident side; a second transparent electrode film so formed that the first and second transparent electrode films face away from each other; and a first ferroelectric film deposited at least between the first and second transparent electrode films, wherein the first ferroelectric film vibrates in response to a drive voltage applied through the first and second transparent electrode films.Type: GrantFiled: January 21, 2011Date of Patent: March 5, 2013Assignee: Sony CorporationInventors: Ryo Koshiishi, Yoshihiro Oshima, Akira Ono
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Patent number: 8380015Abstract: The present invention relates to an optical control device capable of achieving an accurate match of modulation timing and modulation intensity between optical waves propagating through optical waveguides disposed between a plurality of signal electrodes in an optical control device using an anisotropic dielectric substrate.Type: GrantFiled: March 29, 2010Date of Patent: February 19, 2013Assignee: Sumitomo Osaka Cement Co., Ltd.Inventors: Yuhki Kinpara, Masayuki Ichioka, Junichiro Ichikawa, Satoshi Oikawa, Yasuhiro Ishikawa
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Patent number: 8379288Abstract: The invention relates to a transparent electroactive system that includes two electrodes (2, 3) juxtaposed on the same side of a closed space (12) containing electroactive substances. The two electrodes are separated by a distance of less than 250 ?m, and a barrier (1) extending towards the inside of the closed space is placed between the electrodes. The separation between the electrodes is thus not visible, and a mutual neutralization between the electroactive substances is prevented. Advantageously, the electroactive substances are contained in cells (5) separated from each other within the closed space. The barrier (1) can thus be distinct from separation walls (4) between the cells, or can be assimilated with some intercellular walls.Type: GrantFiled: October 7, 2009Date of Patent: February 19, 2013Assignee: Essilor International (compagnie Generale d'optique)Inventors: Sandrine Duluard, Jean-Paul Cano, Claudine Biver
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Patent number: 8363299Abstract: A first apparatus for displaying a color image comprises an electro-optic display (1002) having a plurality of pixels, each of which can be independently set to a light-transmissive optical state or a substantially opaque optical state, and lighting means (1006) arranged to flash separate pulses of light of at least two differing colors on to one surface of the electro-optic display (1002). A second apparatus for generating pulses of light of differing colors comprising a light source and a filter assembly comprising first (1100) and second (1106) electro-optic layers each having a light-transmissive state and a colored state, the two colored states being different, and electrodes to switch these layers between these states.Type: GrantFiled: September 1, 2010Date of Patent: January 29, 2013Assignee: E Ink CorporationInventors: Richard J. Paolini, Jr., Thomas H. Whitesides
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Patent number: 8360583Abstract: An image display device for optically displaying an image is disclosed. This device includes: a light source; an imaging-light generator converting light emitted from the light source, into imaging light representative of the image to be displayed to a viewer, to thereby generate the imaging light; and an exit-pupil controlling unit configured to control a position of an exit pupil of the image display device. The exit-pupil controlling unit includes: an electrically controllable element configured to diffract the imaging light incoming from the imaging-light generator, at an electrically-variable diffraction angle; and a controller configured to electrically control the diffraction angle of diffracted light emitted from the electrically controllable element, to thereby control the position of the exit pupil.Type: GrantFiled: August 9, 2010Date of Patent: January 29, 2013Assignee: Brother Kogyo Kabushiki KaishaInventor: Mitsuyoshi Watanabe
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Publication number: 20130021561Abstract: A display device includes: a first substrate; a second substrate on the first substrate and facing the first substrate, the second substrate having a first electrode on a surface thereof; a third substrate on the second substrate and facing the second substrate, the third substrate having a second electrode on a surface thereof, the second electrode facing the first electrode and configured to form an electric field between the first electrode and the second electrode; a barrier layer interposed between the second substrate and the third substrate, the barrier layer configured to selectively control transmission and blockage of light in regions thereof corresponding to each of a plurality of pixels; and a first polarizing plate on the third substrate and configured to transmit a portion of light passing through the barrier layer, the portion of light having a first phase, the barrier layer including electrochromic elements.Type: ApplicationFiled: December 20, 2011Publication date: January 24, 2013Inventor: Seon-Hong AHN
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Patent number: 8346028Abstract: The optical device includes a waveguide on a base. The device also includes a modulator on the base. The modulator includes an electro-absorption medium configured to receive a light signal from the waveguide. The modulator also includes field sources for generating an electrical field in the electro-absorption medium. The electro-absorption medium is a medium in which the Franz-Keldysh effect occurs in response to the formation of the electrical field in the electro-absorption medium. The field sources are configured so the electrical field is substantially parallel to the base.Type: GrantFiled: December 15, 2009Date of Patent: January 1, 2013Assignee: Kotura, Inc.Inventors: Dazeng Feng, Po Dong, Ning-Ning Feng, Mehdi Asghari
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Patent number: 8329279Abstract: An electrooptic apparatus includes an electrooptic material interposed between a pair of substrates, and a film formed above each of surfaces of the substrates facing the electrooptic material. The film is formed by a method including (a) forming a frame-shaped partition in an application area on the substrate, the partition having a side surface facing a center of the application area, (b) applying the material liquid to the application area, and (c) drying the material liquid. In step (a), the partition is formed so that a distance between the side surface of the partition and the center is smaller than a distance between an outer edge of the application area and the center, and so that a height of the partition is smaller than a film thickness of the material liquid at a time when the material liquid is applied and is larger than a thickness of the dried film.Type: GrantFiled: December 14, 2011Date of Patent: December 11, 2012Assignee: Seiko Epson CorporationInventor: Katsumi Suzuki
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Patent number: 8305676Abstract: An optical deflector includes multiple voltage-dependent refractive boundaries. Light passes through the refractive boundaries and accumulates a deflection angle. An electrode placed to apply a voltage to the boundaries may be non-uniform to modulate a wavefront as it passes. A scanning laser projector includes the optical deflector to modulate laser light.Type: GrantFiled: December 18, 2009Date of Patent: November 6, 2012Assignee: Microvision, Inc.Inventor: Bin Xue
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Patent number: 8279511Abstract: Embodiments relate to a method and apparatus for producing polarized light, having a modulator crystal, where the modulator crystal incorporates a birefringent electro- optic material. The modulator crystal has an optic axis, a first polarization axis, and a second polarization axis, where the first polarization axis and second polarization axis are each perpendicular to the optic axis and perpendicular to each other. The apparatus can also include an electrode pair, where application of an electric field modulates light passing through the modulator crystal that is polarized along the first polarization axis. Embodiments pertain to a method and apparatus for modulating light. The apparatus incorporates a modulator crystal having an electro-optic material. The device also has at least two electrode pairs, where each electrode pair that modulates light passing through the modulator crystal that has a direction of travel that has a component parallel to the optic axis.Type: GrantFiled: July 13, 2009Date of Patent: October 2, 2012Assignee: University of Florida Research Foundation, Inc.Inventors: Volker M. Quetschke, Wan Wu, Luke Williams, Muzammil A. Arain, Rodica Martin, David Reitze, David B. Tanner, Guido Mueller
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Patent number: 8254009Abstract: An optically powered optical modulator comprises an optical modulation component, such as an electro-optical modulator, acousto-optic modulator or magneto-optic modulator, in combination with one or two lens assemblies positioned at one or both apertures of the optical modulation component, so that the optical modulator formed by the combination of the lens assembly or assemblies and the optical modulation component has optical focus power.Type: GrantFiled: February 2, 2011Date of Patent: August 28, 2012Assignee: PV Labs, Inc.Inventor: Eiji Yafuso
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Patent number: 8220939Abstract: A screen device of the present invention has a light collecting element array including a plurality of light collecting elements that collect incident light from a projector and a back surface sheet. The back surface sheet includes a first electrode plate, a second electrode plate, a photoconductive layer disposed between the first electrode plate and the second electrode plate, and an image recording layer disposed between the first electrode plate and the photoconductive layer. At the back surface sheet, a light reflecting portion is formed at a light collecting region to which the light collected by the light collecting elements is irradiated, and a light absorbing portion is formed at a non-light collecting region to which the light collected by the light collecting elements is not irradiated.Type: GrantFiled: September 2, 2009Date of Patent: July 17, 2012Assignee: Fuji Xerox Co., Ltd.Inventors: Naoki Hiji, Takeo Kakinuma, Chikara Manabe, Tadayoshi Ozaki
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Patent number: 8213072Abstract: An electrofluidic display device including a first structure layer and a second structure layer is provided. The first structure layer includes a first substrate. A trench structure layer is disposed on the first substrate and has a trench surrounding an indent groove of a second substrate. A first electrode layer is disposed on the first substrate. A first hydrophobic layer is disposed on the first electrode layer. The second structure layer having the second substrate is located aside the first substrate with a gap. A groove structure layer is disposed on the second substrate. The groove structure has the indent groove surrounded by the trench. A second electrode layer is disposed on the groove structure layer. A second hydrophobic layer is disposed on the second electrode layer. Polar fluid is disposed in the indent groove. Non-polar fluid is disposed in the gap between the first and second substrates.Type: GrantFiled: March 29, 2011Date of Patent: July 3, 2012Assignee: Industrial Technology Research InstituteInventors: Yun-Sheng Ku, Wei-Yuan Cheng, Shu-Wei Kuo, Hsin-Hung Lee, Kuo-Lung Lo
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Patent number: 8195011Abstract: The present invention discloses an ultra-compact optical modulator comprising at least one resonator on a semiconductor chip. The EO modulator modulates incoming light having a certain wavelength range and comprises a waveguide layer accommodating at least one resonator having a periodic complex refraction index distribution structure defining a periodic defect band-edge and a cladding layer; and at least one electrode; the waveguide layer, the cladding layer and the electrode forming a capacitor structure; such that when an external voltage is applied to the capacitor structure the free carrier concentration in the waveguide layer is controlled, enabling a modulation of the resonator's refractive index; wherein the periodic defect band-edge is selected to be within the wavelength range, enabling a slow-light propagation of the incoming light within the waveguide layer.Type: GrantFiled: March 3, 2009Date of Patent: June 5, 2012Assignee: Ramot At Tel-Aviv University Ltd.Inventors: Damian Goldring, David Mendlovic
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Publication number: 20120099035Abstract: An optically addressed light valve suitable for selectively limiting the transmission of radiation from high intensity light sources independent of wavelength using a TN liquid crystal cell and a photoconductive material (vanadium doped silicon carbide).Type: ApplicationFiled: July 15, 2010Publication date: April 26, 2012Applicant: THE SECRETARY OF STATE FOR DEFENCEInventor: Christopher David Burgess
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Publication number: 20120086899Abstract: An electrooptic apparatus includes an electrooptic material interposed between a pair of substrates, and a film formed above each of surfaces of the substrates facing the electrooptic material. The film is formed by a method including (a) forming a frame-shaped partition in an application area on the substrate, the partition having a side surface facing a center of the application area, (b) applying the material liquid to the application area, and (c) drying the material liquid. In step (a), the partition is formed so that a distance between the side surface of the partition and the center is smaller than a distance between an outer edge of the application area and the center, and so that a height of the partition is smaller than a film thickness of the material liquid at a time when the material liquid is applied and is larger than a thickness of the dried film.Type: ApplicationFiled: December 14, 2011Publication date: April 12, 2012Applicant: SEIKO EPSON CORPORATIONInventor: Katsumi SUZUKI
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Patent number: 8132917Abstract: A projection type display device includes: a light emitting unit that includes at least one light source for emitting a coherent light. An image light generating unit modulates the light emitted by the light emitting unit to generate an image light. A projecting unit projects the image light. A phase modulating unit is arranged either between the light emitting unit and the image light generating unit or between the image light generating unit and the projecting unit and has an area where at least one of a retardation value and an azimuth direction of a slow axis is distributed respectively in different directions or values in a plane orthogonal to an optical axis.Type: GrantFiled: April 16, 2009Date of Patent: March 13, 2012Assignee: Asahi Glass Company, LimitedInventors: Mitsuo Osawa, Atsushi Kawamori
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Patent number: 8111442Abstract: A display apparatus using electroplating on an electrode for modulating light includes a layer formed on the electrode. The layer has an insulator with a gap therein, and conductive fine particles are dispersed in the gap.Type: GrantFiled: December 16, 2010Date of Patent: February 7, 2012Assignee: Canon Kabushiki KaishaInventors: Hajime Ikeda, Makoto Higashikawa
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Patent number: 8089680Abstract: An electrophoretic display device is described. The device includes a substrate, first electrodes, an electrophoretic film having electrophoretic particles, and second electrodes. The substrate is has a plurality of pixel regions. First electrodes are disposed respectively on each pixel region, and include first patterns separated from one another and second patterns connected to the first patterns. The second electrode is disposed on the electrophoretic film. The area of one of the electrodes, opposing the other of the electrodes has apertures formed therein, reducing the contact area between the electrode and the electrophoretic film.Type: GrantFiled: January 4, 2011Date of Patent: January 3, 2012Assignee: LG Display Co., Ltd.Inventors: Young Sik Jeong, Sang Yeup Lee
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Patent number: 8072670Abstract: A spatial light modulator has an array of elements organized into element rows and element columns and an array of electrodes organized into electrode rows and electrode columns to activate the array of elements. The modulator has pixel circuitry organized into circuit rows and circuit columns with the pixel circuitry being electrically coupled to the array of electrodes, such that there is at least one translation of either circuits in a column to electrodes in a row or circuits in a row to electrodes in a column.Type: GrantFiled: February 9, 2006Date of Patent: December 6, 2011Assignee: Compound Photonics LimitedInventors: James L. Sanford, Howard V. Goetz, Steven H. Linn
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Patent number: 8068266Abstract: A display substrate includes a base substrate, a reflection-polarization member, a first electrode, an insulation layer and a pixel wall. The reflection-polarization member is disposed on the base substrate to reflect and polarize incident light. The first electrode is disposed in a unit pixel area of the reflection-polarization member. The insulation layer is disposed on the first electrode. The pixel wall is disposed on the insulation layer and defines the unit pixel area. Therefore, the entire area of a unit pixel may be used as a reflective area or a transmissive area, and thus an aperture ratio may be improved in a reflection mode or a transmission mode.Type: GrantFiled: July 14, 2009Date of Patent: November 29, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Hyang-Yul Kim, Hee-Seop Kim, Joo-Nyung Jang, Hwa-Sung Woo, Cheol Shin, Dong-Chul Shin, Yong-Hwan Shin
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Patent number: 8049947Abstract: A display assembly comprises a backplane assembly comprising a plurality of spaced backplane areas, each backplane area comprising a plurality of electrodes, the backplane areas being separated by gutter areas free from electrodes; an adhesive layer overlying the plurality of spaced backplane areas; and a layer of a solid electro-optic medium overlying the adhesive layer in the plurality of spaced backplane areas. The display sub-assembly can be produced via a single lamination and severed to form a plurality of separate electro-optic displays. Processes for producing the display assembly are also described.Type: GrantFiled: August 31, 2009Date of Patent: November 1, 2011Assignee: E Ink CorporationInventors: Guy M. Danner, Valerie C. Northrop, Jonathan L. Zalesky, Matthew Joseph Kayal, Steven J. O'Neil
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Patent number: 8023170Abstract: A total internal reflection (TIR) modulator includes a member comprising an electro-optic material; a plurality of first electrode sets; a plurality of second electrode sets; and a first set of electrical conductors, each electrical conductor in the first set of electrical conductors being coupled to one of the second electrode sets wherein the electrodes in each second electrode set are arranged in an interdigitated relationship with the electrodes in one of the first electrode sets; and each of the first electrode sets comprises a first electrode, the first electrodes being arranged in an interdigitated relationship with the electrical conductors in the first set of electrical conductors.Type: GrantFiled: March 24, 2010Date of Patent: September 20, 2011Assignee: Eastman Kodak CompanyInventors: James G. Ko, Meritt W. Reynolds