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| Number | Title | Issue Date |
| 8149490 | Optical switch, optical switch control method and communication system When a light intensity upon a perturbation is detected, an error calculation/correction unit (85) in a control unit (8) corrects and updates the above-described initial manipulated variables based on perturbation manipulated variables and manipulated v... | 04/03/2012 |
| 8018645 | Display-protective plate for electronic apparatus and electronic apparatus therewith A display-protective plate for an electronic apparatus, is attached to a case 7 of an electronic apparatus 1 to be used, and protects a display surface of a display 4 that is attached so as to be exposed from the case 7 of the electronic ... | 09/13/2011 |
| 7903324 | Optical switching element and photoaddressable display medium using the same An optical switching element including at least a multi-layered optical switching layer that includes a charge generation layer and a charge transport layer wherein, the charge transport layer contains a charge transporting material represented by the following gene... | 03/08/2011 |
| 7808697 | TIR light valve An array of light valves switch light by enabling and disabling total internal reflection (TIR) on a surface of the light valve. The disabling of the TIR is accomplished by putting another optical element in contact with the surface and then diffusing or changing th... | 10/05/2010 |
| 7800816 | Display device based on electrowetting effect In a reflective a display device based on layer break up or layer displacement having at least two different states, in which one of the fluids (5) e. g oil in a first state adjoins at least a first support plate (3) and in the second state the other f... | 09/21/2010 |
| 7508573 | Optical switch structure A structure of an optical switch makes the optical switch capable of receiving broadband signals. And the manufacturing procedure is simplified. ... | 03/24/2009 |
| 7426069 | Optical apparatus and imaging apparatus An optical apparatus is disclosed. The optical apparatus includes: a first optical element having a first polarizing layer containing a material having a refractive index that changes in accordance with the magnitude of applied voltage and first and second transpare... | 09/16/2008 |
| 7417788 | Optical logic device The invention uses optically active dyes or other optically active materials to perform digital data processing and logic functions on optical data. The data is carried in pulses of photons of wavelengths appropriate to interact with the optically active materials t... | 08/26/2008 |
| 7411723 | Multi-stage optical switching device An optical switching device contains an active stage coupled to a passive stage. The index of refraction in the active stage is variable to change the entry direction of a light beam into the passive stage, which has a fixed index of refraction. Because the light be... | 08/12/2008 |
| 7408700 | Optical switch, and method for controlling drive voltage thereof An optical switch which minimizes losses in the power of output light while enabling deflection of light within a range of comparatively large deflection angles used for setting switching among output ports. The optical switch is configured to have a first light def... | 08/05/2008 |
| 7382958 | Photonic crystal wave guide optical spectrometer An optical instrument for splitting optical spectrum, comprising a series of hollow core optical wave guides (12, 22, and so on) connected by optical couplers (16, 26, and so on) transporting broad band incident optical wave from one stage to another, ... | 06/03/2008 |
| 7372608 | Light control device and light control system using the same A light control device includes a substrate, a first reflective layer, a light modulating film in which the refractive index varies according to an applied electric field, a transparent electrode, and a second reflective layer having a reflection characteristic such... | 05/13/2008 |
| 7365843 | Spectral photometer and associated measuring head A spectral photometer intended for integration purposes includes a measurement head equipped with illumination arrangement including at least one light source for the illumination at an angle of incidence of 45° of a measured object and located in a measurement pla... | 04/29/2008 |
| 7362485 | Image display medium, image writing device, and image forming apparatus An image display medium comprising: a display layer; a pair of substrates that retain the display layer therebetween, with at least parts of the pair of substrates configuring a frame portion to which an electrical connection connector for electrical connection to t... | 04/22/2008 |
| 7359105 | Spatial light modulator and a display device A spatial light modulator comprises: a first substrate (25); a second substrate (26); a layer of electrooptic material disposed between the first substrate and the second substrate. A first electrode arrangement (27) is disposed over the first s... | 04/15/2008 |
| 7304776 | Integrated optical structures with electrically conductive parts The invention concerns a integrated optical structure comprising a plurality of parts made at least of a dielectric material, stacked according to the levels of integration and defining at least an optical microguide, and further comprising at least an integrated pa... | 12/04/2007 |
| 7298555 | Optical beam steering using small angle beam steering device In one aspect the system serves as a transmitter and comprises an optics system; a plurality of source elements positioned on the focal plane; and, a small angle beam steerer. The plurality of source elements are each capable of providing a point source of radiation... | 11/20/2007 |
| 7295360 | Structure having light modulating film and light control device using the same A structure includes a substrate and a light modulating film formed on top of the substrate. The light modulating film is made of polycrystalline PLZT containing Pb, Zr, Ti, and La as constituent elements. The film has a La concentration in the range of 5 at % to 30... | 11/13/2007 |
| 7292382 | Light control unit A light control unit comprises: a substrate; an insulating film; a first transistor; a reflecting film formed on the insulating film; a light modulating film formed on the reflecting film; a plurality of pairs of electrodes arranged two-dimensionally on the light mo... | 11/06/2007 |
| 7270424 | Color separation prism assembly A color separation prism assembly. The color separation prism assembly includes a polarizing beam splitter and a plurality of prism blocks. The polarizing beam splitter is coated with a polarizing beam splitter coating on a diagonal plane thereof. A first filter and... | 09/18/2007 |
| 7268933 | Discharge of MEM devices having charge induced via focused beam to enter different states An apparatus includes micro-electromechanical (MEM) devices, a charge source, and a discharge mechanism. Each MEM device has different states based on a charged induced thereon. The charge source is to induce the charge thereon such that the MEM devices each enter o... | 09/11/2007 |
| 7263251 | Optical switch having photonic crystal structure The present invention provides an optical switch having a photonic crystal structure. An optical switch of the invention has a slab optical waveguide structure whose core (35) has a two-dimensional photonic crystal structure where two or more media (33, 34... | 08/28/2007 |
| 7245418 | Electro-optic switching apparatus not requiring DC bias An OFF state, maximum attenuation level, for an electro-optic attenuator/switch results when either a first or second control voltage is applied to the control input. An AC generator, coupled to the control input, generates minimum and maximum peak voltages that cor... | 07/17/2007 |
| 7242825 | Cantilever beam MEMS variable optical attenuator An improved cantilever beam optical switch design which provides the function of a variable optical attenuator (VOA). A small degree of intentional misalignment of the waveguide will create different levels of optical attenuation. By finely controlling the misalignm... | 07/10/2007 |
| 7239773 | Optical-switch testing apparatus, optical-signal switching apparatus, optical-switch testing method, and control method for optical-signal switching A light source supplies optical signal to an optical switch and a detector detects light receiving level. A control unit changes a deflection control amount for changing an angle of a tilt mirror, and outputs the deflection control amount to a driving unit. When an ... | 07/03/2007 |
| 7212332 | Micro-electromechanical system (MEMS) polyelectrolyte gel network pump According to embodiments of the present invention, a first layer of electrically conductive material may be disposed in a recess in a micro-electromechanical system (MEMS) base. An electrically charged gel network may be disposed in the recess on the first layer of ... | 05/01/2007 |
| 7198737 | Electrically switchable polymer-dispersed liquid crystal materials including switchable optical couplers and reconfigurable optical interconnects A new photopolymerizable material allows single-step, fast recording of volume holograms with properties that can be electrically controlled. A method for preparing a switchable grating can comprise the steps of placing a mixture between a first and second slide, wh... | 04/03/2007 |
| 7183633 | Optical cross-connect system An optical cross-connect switch comprises a base (216), a flap (211) and one or more electrically conductive landing pads (222) connected to the flap (211). The flap (211) has a bottom portion that is movably coupled to the base ( | 02/27/2007 |
| 7164817 | Optical switch and optical add/drop multiplexer using the same As a wavelength selection filter, a filter in which dielectric multilayered films are formed on a substrate, an optical fiber grating in which diffraction grating is formed in an optical fiber, and so on, can be used. As another optical demultiplexer 33, as d... | 01/16/2007 |
| 7161592 | Electro-optical apparatus and electronic equipment A pixel electrode and a thin film transistor connected to the electrode are provided above one substrate. A shading film is provided above another substrate. The shading film has an overhanging portion defining a corner cutting in an opening area of each pixel in th... | 01/09/2007 |
| 7149433 | Upgrade of optical amplifier site to a digital optical network site in an optical transmission network A digital signal channel bypass is provided as bypass around an optical network optical amplifier, in particular, an analog type optical amplifier, such as an EDFA, in an optical transport network or system. The digital signal bypass provides for an ability to maint... | 12/12/2006 |
| 7116855 | Optical shuttle system and method used in an optical switch An optical shuttle system for routing signals in a communications system that includes a terminal connected to a power source, a shuttle that includes waveguides used for routing the signals, and a beam connected to the terminal and the shuttle so that the beam susp... | 10/03/2006 |
| 7116479 | Array polarization beamsplitter and combiner A method and apparatus is described to beam split or combine light for multiple fiber optic channels in a single device. Multiple light beams may enter the device through an array of fiber ports with each port having a collimating lens. The device includes a beamspl... | 10/03/2006 |
| 7116412 | Angle detection optical system, angle detection apparatus, optical signal switch system and information recording and reproduction system A reflective surface for detection is provided in an object being detected. Laser light condensed by a condensing lens is emitted from a laser light source and angle detection is performed by performing angle detection of the reflected light. The reflected light is ... | 10/03/2006 |
| 7085037 | Multi-stage optical switching device An optical switching device contains an active stage coupled to a passive stage. The index of refraction in the active stage is variable to change the entry direction of a light beam into the passive stage, which has a fixed index of refraction. Because the light be... | 08/01/2006 |
| 7075705 | Method for wavelength-selective mixing and/or distribution of polychromatic light A method for wavelength-selective mixing and/or distribution of polychromatic light. When mixing polychromatic light, lights having only one wavelength are successively fed to each member of a selective chain to form a partial spectrum, and when distributing chromat... | 07/11/2006 |
| 7057786 | Electro-optic array interface A grating coupled surface plasmon resonance optical modulator is disclosed. A electro-optic polymer dielectric is deposited on the metallic surface of a diffraction grating to provide a metal/dielectric interface. A surface plasmon will propagate at the metal/dielec... | 06/06/2006 |
| 7058304 | Bi-directional cross-connect Wavelength interleaving cross-connects pass a first optical signal including a first set of optical frequencies in a first direction and a second optical signal including a second set of optical frequencies in a second direction. In one embodiment, the first optical... | 06/06/2006 |
| 7046425 | Multi-stage optical switching device An optical switching device contains an active stage coupled to a passive stage. The index of refraction in the active stage is variable to change the entry direction of a light beam into the passive stage, which has a fixed index of refraction. Because the light be... | 05/16/2006 |
| 7042535 | Optical display system and optical shifter An optical display system includes: a light source; a display panel including multiple pixel regions, each of which can modulate light; and an optical shifter, which is disposed so as to receive an outgoing light ray of the display panel and optically shift an image... | 05/09/2006 |
