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| Number | Title | Issue Date |
| 6741378 | Optical modulator having element for varying optical phase by electrooptic effect A low voltage modulation signal can be realized while reducing reflection and radiation of a high frequency modulation signal in an optical modulator. The optical modulator includes an electrooptic effect element, a relay substrate constituted of a dielectric wafer ... | 05/25/2004 |
| 6697550 | Fast 1×N fiber-optic switch An optical switch for switching an incoming light signal to one of a number of output ports in a polarization independent manner. The optical switch includes a walk-off device, and a compensator which compensates for walk-off distance variations of two po... | 02/24/2004 |
| 6678082 | Electro-optical component including a fluorinated poly(phenylene ether ketone) protective coating and related methods A method for applying a protective coating to an electro-optical component includes positioning the electro-optical component in a chamber and applying a coating composition to at least one surface of the electro-optical component to form the protective c... | 01/13/2004 |
| 6646782 | Solid-state surface plasmon light valve and tunable filter An all solid-state light valve and tunable filter that uses color-selective absorption at a metal-dielectric interface by surface plasmons. The solid-state surface plasmon light valve and tunable filter comprises a substrate, a bottom electrode, a solid-s... | 11/11/2003 |
| 6608621 | Image displaying method and apparatus An image displaying method and apparatus is provided which can display an image at a high luminance. A first horizontal line image signal is written in a write memory, read in parallel from a read memory during a horizontal blanking period next to the hor... | 08/19/2003 |
| 6606181 | Optical power limiting control A controllable phase plate has numerous domains that are randomized as to the orientation of their birefringence and can be used in a power limiting control to produces an electrically controllable diffraction pattern having a portion, especially the zero... | 08/12/2003 |
| 6602432 | Electroabsorption modulator, and fabricating method of the same A high-speed operation of an electroabsorption modulator is intended. A p-InGaAs contact layer 9 is formed not only in an optical modulation region MA but also in an optical coupling region CA, and an AlInAs oxide layer 7 is disposed in p-InP cladding lay... | 08/05/2003 |
| 6600844 | Highly linear electro-optic delay generator for all-optical pulse-position modulation An optical delay generator comprises a first waveguide made from electro-optically active material resonantly coupled to a second non-electro-optically active waveguide. The first waveguide contains a chirped distributed Bragg reflector structure which re... | 07/29/2003 |
| 6587249 | Apparatus and method for adjusting the control signal of an electro-optical modulator The invention provides a method of positioning an electrical control signal (S1, S1bis) for an electro-optical modulator (5) relative to the characteristic (VA, VB) of the modulator (5), in which method a disturbing signal (S2, S2bis) is superposed on the... | 07/01/2003 |
| 6577784 | Optical switch In order to provide a small-sized and compact optical switch of 1×4 type. Two movable optical fibers are fixed on a substrate by a fixing block disposed in a middle portion of the fibers. Two movable blocks made of a soft magnetic body are mounted to the... | 06/10/2003 |
| 6529307 | Selective intensity modulation of channels in a multiplexed optical communication system A method and apparatus for achieving dynamic intensity modulation of the channels in a wavelength-division multiplexed optical communication system is presented. Wavelengths are spatially separated into a plurality of channels, the polarization states of ... | 03/04/2003 |
| 6490076 | Optical phased array for depolarized optical beam control A optical phased array device for optical beams with general polarization. A reflective embodiment of the inventive optical phased array interposes a quarter-wave plate between a linearly polarized liquid crystal layer and a mirror. A controllable voltage... | 12/03/2002 |
| 6480323 | Two-dimensional beam scanner A device that includes a projection element positioned between first and second beam scanners configured in series and a two-dimensional display plane. An apparatus for controlling the first and second beam scanners is provided so that the angle of incide... | 11/12/2002 |
| 6473542 | Optical switch and optical disk drive Disclosed herein is an optical switch including: a dielectric substrate having a pair of main surfaces opposed to each other; and a pair of electrodes formed on the main surfaces of the dielectric substrate; wherein a direction of emergence of a light bea... | 10/29/2002 |
| 6469822 | Optical phased array device and the method therefor An optical irregular phased-array is disclosed. The effective positions of the phase-controlled elements in the phased-array form an irregular array, such that the size of each phase-controlled element can be much larger than the wavelength of the light w... | 10/22/2002 |
| 6466359 | Multi-beam exposure apparatus The multi-beam exposure apparatus includes a light source for emitting a specified number of multi-beams spaced apart in a direction of auxiliary scanning, a deflecting unit for deflecting the specified number of multi-beams collectively on main scanning ... | 10/15/2002 |
| 6456419 | Frequency modulated liquid crystal beamsteering device An electrical exciting circuit produces a plurality of oscillating electrical excitations, each at an independently controllable frequency. A set of drive electrodes are distributed in an array, and connected so that each receives a respective one of the ... | 09/24/2002 |
| 6449084 | Optical deflector An electrooptical deflector that overcomes conventional geometry limitations and can deflect an optical beam at high speed with high deflection angle and high resolution. It comprises an array of waveguide optical channels having an electrooptical layer s... | 09/10/2002 |
| 6396622 | Electro-optic apparatus and process for multi-frequency variable refraction with minimized dispersion The object of the prevent invention is to provide an optical system for producing variable refraction with minimized dispersion. A first material with a first apex angle in a first state and a second material with a second apex angle in a first state prod... | 05/28/2002 |
| 6373620 | Thin film electro-optic beam steering device A light beam deflector comprising a modified asymmetric Fabry-Perot (Gires-Tournois) etalon having a back reflecting and electrically conducting mirror and a front partially transmitting mirror spaced apart by an electro-optic material, there also being a... | 04/16/2002 |
| 6317251 | Thin film electro-optic beam steering device A light beam deflector comprising a modified asymmetric Fabry-Perot (Gires-Tournois) etalon having a back reflecting and electrically conducting mirror and a front partially transmitting mirror spaced apart by an electro-optic material, there also being a... | 11/13/2001 |
| 6262829 | Method of digital grayscale control using modulation of a slow-acting light source A method of digital grayscale control using light source modulation. First, a light valve, grayscale data, and a light source are provided. The light valve includes a spatial light modulator with at least one pixel. The grayscale data indicates desired gr... | 07/17/2001 |
| 6233083 | Light modulation apparatus and optical information processing system A light modulation apparatus includes: a light modulation device including first light transmission control elements each for controlling the amount of transmission of a light beam, for generating and applying a modulation light beam representing a modula... | 05/15/2001 |
| 6222667 | Electro-optic light valve array A two-dimensional light valve array comprising a pattern of reduced electrode spacing solid state light valves formed using semiconductor processing techniques, and a method of making same. The electrodes are recessed into channels in an electro-optic sub... | 04/24/2001 |
| 6124965 | Optical element and light shutter device using the same Disclosed is a light shutter device comprising a plurality of optical element for modulating light passing therethrough. Each optical element is made of PLZT and the surface of a light modulating region of each optical element is coated with a thin film. ... | 09/26/2000 |
| 6046837 | Optical modulator The recording of an image is performed on a heat-mode sensitive material by an optical modulator equipped with an optical modulation element consisting of an electro-optic crystal substrate. An optical modulation element 10 has an electro-optic crystal su... | 04/04/2000 |
| 6043923 | Modulator and electro-optic sensor equipped with the modulator A modulator and an electro-optic sensor having the modulator for effectively detecting defects in an LCD panel. The electro-optic sensor includes a modulator including a body, a light reflecting member formed on a portion of the body, and a blower formed ... | 03/28/2000 |
| 6031658 | Digital control polarization based optical scanner High speed low cost billion point optical scanner using a binary optical polarization sensitive cascaded architecture network having binary switchable optical plates for scanning in one dimension(x-direction), two dimensions(x and y directions) and three ... | 02/29/2000 |
| 5937271 | Method for manufacturing a thin film actuated mirror array An inventive method for manufacturing an array of M×N thin film actuated mirrors for use in an optical projection system includes the step of: providing a substrate; depositing a thin film sacrificial layer on top of the substrate; creating an array of M... | 08/10/1999 |
| 5930044 | Deflecting element having a switchable liquid crystalline material A deflecting element (1) includes a first substrate (3) and a second substrate (5). The two substrates (3) and (5) enclose a liquid crystalline material (7) which is switchable. A surface (13) of one of the substrates (3) facing the liquid crystalline mat... | 07/27/1999 |
| 5894363 | Electro-optical element An electro-optical element such as a light deflection element which allows high speed random accessing and can provide a large deflection angle and wherein a plurality of of functions can be integrated stably with a high degree of accuracy in a single ele... | 04/13/1999 |
| 5850308 | Scanning arrangement for fast access of memory and display An access system based on piezo-electric transducer assembly or electro-optic device light beam deflector assembly which on application of electric signals deflects light beams, which are then passed through total internally reflecting surfaces to increas... | 12/15/1998 |
| 5786926 | Electro-optical device having inverted domains formed inside a ferro-electric substrate and electro-optical unit utilizing thereof An electro-optical device such as an optical deflector comprising a ferro-electric substrate, electrodes provided on principal surfaces of this substrate and an inverted domain having a polygonal, e.g. triangular shape formed in the substrate, at least on... | 07/28/1998 |
| 5774259 | Photorestrictive device controller and control method therefor A photostrictive device controller and a photostrictive device control method, which can produce a fast response without causing a sharp temperature rise when driving the photostrictive device. The photostrictive device controller comprises: a light sourc... | 06/30/1998 |
| 5768010 | Acousto-optic scanning device The disclosed acousto-optic scanning device includes a thin film waveguide of piezoelectric material (2), a transducer (3) for generating surface elastic waves, and a high frequency signal generator (4) for generating high frequency signals to be applied ... | 06/16/1998 |
| 5768006 | Thin film actuated mirror array for use in an optical projection system An inventive array of thin film actuated mirrors is provided with an active matrix having an array of switching devices, an array of actuating structures and an array of mirrors, wherein each of the actuating structures is cantilevered on the active matri... | 06/16/1998 |
| 5729378 | Optical device An optical device includes a semiconductor optical modulator element (46) which is connected to an end of a signal line (42) in form of a microstrip high-frequency line and whose other electrode is connected to a ground electrode (48) by a bonding wire (5... | 03/17/1998 |
| 5668657 | PLZT based electro-optic phased array optical scanner The unique properties of quadratic lead lanthanum zirconate titanate (PLZT) compositions make feasible the development of phased array optical scanners. Two implementations of integrated PLZT phased array scanners as two-port and three-port devices are pr... | 09/16/1997 |
| 5585958 | Electrochromic light modulation devices, in particular screens and display units A device comprising a clear substrate (24) supporting at least one thin, clear, electronically conductive work electrode (23); a substrate (5, 3) supporting at least one electronically conductive counter electrode (2); at least one intermediate layer (25,... | 12/17/1996 |
| 5561549 | Optical element An optical element consists of an LN or LT crystal doped with MgO or ZnO. A +z surface and a -z surface of the crystal are connected to each other by means of a metal jig and an indium sheet. The +z surface and the -z surface may also be connected to each... | 10/01/1996 |
