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| Number | Title | Issue Date |
| 5539567 | Photolithographic technique and illuminator using real-time addressable phase shift light shift A phase shift illuminator (700) is comprised of a light source (704) and a phase modulator (716), typically a flexure beam micromirror array, which transversely modulates the incident light beam. When a flexure beam micromirror array is used as the phase ... | 07/23/1996 |
| 5528707 | Bidirectional optical modulator having lightwave signal conservation A modulating optical element having ports wherein either port can output or receive light signals. An electrooptic effect is applied to the optical element to allow the light signals to pass or not pass through the optical element. Due to the electrooptic... | 06/18/1996 |
| 5526172 | Microminiature, monolithic, variable electrical signal processor and apparatus including same A microminiature, variable electrical device, such as a capacitor (40a), comprises an elemental DMD SLM (40'), which includes a substrate (43) and a member (145) spaced therefrom and mounted for movement by appropriate facilities (42, 44). A control signa... | 06/11/1996 |
| 5444567 | Light control device A light control device including an electro-optical material, a light refraction device mounted on the surface of the electro-optical material and electrodes provided on respective front and back major surfaces of the electro-optical material. A waveguide... | 08/22/1995 |
| 5430561 | Optical space switch employing 2 parallel diffraction gratings and a polarization rotating element The invention provides an optical space switch device which provides variable interconnection of one- or two-dimensionally spatially multiplexed optical signals. The optical space switch device comprises a plurality of optical space switch stages stacked ... | 07/04/1995 |
| 5379357 | Method and apparatus for polarized optical telecommunications using ultrasonic modulation means An apparatus and method for optical telecommunication includes introducing a laser beam emitted from a light source at a first station into an optical fiber, providing an ultrasonic wave obtained by modulating a voice signal by a signal-applying-device at... | 01/03/1995 |
| 5373393 | Opical interferometric device with spatial light modulators for switching substantially coherent light An interferometric optical switching device for switching substantially coherent light beams includes a plurality of interferometric switching cells arranged in matrix form. Each interferometric switching cell is independently controllable to selectively ... | 12/13/1994 |
| 5317446 | Electrooptic device for scanning using domain reversed regions A scanning device having: (i) an electrooptic planar waveguide or bulk material capable of propagating light beams with minimum beam distortion, (ii) an electrooptic prism array defined on said electrooptic planar waveguide or bulk material, comprised of ... | 05/31/1994 |
| 5299054 | Optical switch An optical medium, which may be nonlinear, is provided with a matrix of conductors ("select lines") parallel to a face (planar surface) of the optical medium. The select lines are preferably superconductive, and are arranged in a two offset planar, prefer... | 03/29/1994 |
| 5255118 | Electrooptic TIR light modulator image bar having electrode length for optimizing spatial frequency response A technique for reducing interpixel crosstalk in an electrooptic total internal reflection light modulator image bar. A particular electrode length is selected to tailor a portion of the spatial frequency response of the image bar. The pixel size and qual... | 10/19/1993 |
| 5243457 | Material with enhanced visibility characteristics Flexible visibility enhancing material is provided which combines the advantages of a light reflective component and a luminescent component. The material includes a first layer of prismatic light reflective plastic material having an underlying surface f... | 09/07/1993 |
| 5218469 | Electrooptic TIR light modulator image bar having illumination conditions for optimizing spatial frequency response 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(πPf) for abs... | 06/08/1993 |
| 5212583 | Adaptive optics using the electrooptic effect An adaptive electroopical lens system for use in optical data storage systems, optical phased arrays, laser or other optical projectors, and raster scanning devices, and the like. The invention provides an electrooptical means for scanning an optical beam... | 05/18/1993 |
| 5208697 | Microwave frequency range electro-optic modulator with efficient input coupling and smooth wideband frequency response A travelling-wave Mach-Zehnder electro-optic modulator (10) for operation at microwave electrical input signal frequencies has an electrical modulation electrode structure (26,34) which constitutes a coplanar waveguide (24). An electrical input signal con... | 05/04/1993 |
| 5198920 | Transverse pixel format electro-optic spatial light modulator A spatial light modulator comprising a solid state light valve comprising a high density two-dimensional array of "Kerr-cell" like pixels formed in a solid state electro-optical composition such as lanthanum modified lead zirconium titanate (PLZT). Transv... | 03/30/1993 |
| 5175642 | Light source unit capable of changing size of light beam spot and optical scanning image recording apparatus using the same A light source unit comprises a laser unit for emitting a laser beam; a deflection element for deflecting the laser beam emitted from the laser unit and for outputting a deflected laser beam, a deflection angle of the deflected laser beam being controlled... | 12/29/1992 |
| 5159351 | Light deflecting device A light deflecting device comprising a transparent member having an electro-optical effect, and a first and a second electrode provided on opposite surfaces of the transparent member. When a voltage is applied to one of the electrodes, an uneven electric ... | 10/27/1992 |
| 5150241 | Liquid crystal electro-optical deflector having electrode array and comb shaped electrode formed on resistive layer The disclosed deflector includes a thin film of liquid crystal on either side of which there is positioned at least one plane of electrodes, the assembly forming an array of elementary, quadripolar phase-shifters placed side by side, their electrodes bein... | 09/22/1992 |
| 5130849 | Method and apparatus for energy transfers between optical beams using near-bandgap electrorefractive effect Enhanced energy transfers are achieved between optical beams by operating at wavelengths in the near-bandgap region of a photorefractive material, and employing an electrorefractive effect previously proposed only for single beams. An electric field is ap... | 07/14/1992 |
| 5122894 | Electro-optic beam deflection An optical deflection device for manipulating optical beams employs a set of layers having the configuration NUPUN . . . , where the N and P symbols refer to N-type and P-type dopants and the U symbol refers to an electrooptically active optical guide lay... | 06/16/1992 |
| 5101293 | Electrooptic device for modulation of intensity and phase of transmitted or reflected light at discrete operating wavelengths An electrooptic modulator includes structure defining a single crystal substrate upon which are positioned, in succession, an inside reflector formed by a set of epitaxial single crystal layers, a resonator layer and an outside reflector formed by another... | 03/31/1992 |
| 5093746 | Current injection modulator A current injection modulator includes structure defining a single crystal substrate, having some refractive index, on which are positioned, in succession, an inside reflector formed by a first set of epitaxial single crystal layers, a resonator layer and... | 03/03/1992 |
| 5093747 | Method for providing beam steering in a subaperture-addressed optical beam steerer A practical means for electrically addressing the extremely large number and high density of phase shifters needed for operation of an optical phased array beam steerer. The array of phase shifters is subdivided into identical subarrays which completely f... | 03/03/1992 |
| 5071232 | Optical deflection element and space optical matrix switching device An optical deflection element receives incident beam and deflects the incident beam with an arbitrary deflection angle. The optical deflection element includes a plurality of unit members which are successively stacked and each including an electrooptic l... | 12/10/1991 |
| 5061048 | Apparatus for optical beam steering using non-linear optical polymers An electro-optical light deflector utilizing layers of a non-linear electro-optically (NLO) responsive polymer for directing an exiting light beam in a given direction. Sandwiched between each NLO layer of a multi-layer array is a thin film electrically c... | 10/29/1991 |
| 5055770 | Method and apparatus for detecting voltage A voltage in a selected area of an object is measured by launching an input light beam into an electrooptic material whose refractive index is changed in accordance with an electric field created by the voltage in a selected area of an object to be measur... | 10/08/1991 |
| 5053168 | Nonlinear optical medium with a stable noncentrosymmetric polymeric structure This invention provides nonlinear optical media which have a stable noncentrosymmetric array of side chain polymer molecules, such as an electric field poled and stabilized medium of a 50/50 copolymer of N-methyl-4-[2-(4-nitrophenyl)ethenyl]phenylamino-2-... | 10/01/1991 |
| 4973900 | Voltage detecting device A voltage detecting device using an electro-optical material with a refractive index that is changed by a voltage at a part of an object comprising a light source, an electro-optical material for changing the optical path of the light beam from the light ... | 11/27/1990 |
| 4958914 | Optical intensity-to-position mapping and light deflector apparatus and method A light deflector apparatus and method is disclosed which provides an optical intensity-to-position mapping as well as optical switching capabilities. An array of voltage gradient modules (24, 26, 28) are provided in a layer of electro-optic material (52)... | 09/25/1990 |
| 4937539 | Phased array for optical beam control An optical beam scanner incorporating an array of beam deflection elements commonly controlled to steer an optical beam impingent on the array is described. The beam steering elements are arranged in the array as individually controlled elements and the d... | 06/26/1990 |
| 4930853 | Electrooptic deflector An electrooptic deflector composed of a plate made of a material with a refractive index which can be modified by the application of an electrical field, whereinto a collimated optical beam can be injected in direction parallel to the electrodes deposited... | 06/05/1990 |
| 4930852 | Optical fiber mounting and structural monitoring An optical fiber mounting device and method of installation and monitoring of a structure using the device. The device includes an optical fiber connected to a support sheet. The support sheet is readily adapted to be connected to a structure. The method ... | 06/05/1990 |
| 4925261 | Method for scanning a laser beam by non-mechanical deflectors A method for making an image line (10) with a laser beam, according to which the laser beam is created by a laser (1) the intensity of the laser beam is modulated by an external modulator or by said laser (1) said modulated laser beam is fed into a coding elem... | 05/15/1990 |
| 4922186 | Voltage detector A voltage detector comprises a pulse light source, a delay means, a dispersing prism made of an electro-optic material and a linear image sensor. The electro-optic material senses a voltage developing in a selected area of an object as a change of its ref... | 05/01/1990 |
| 4908584 | Spatial light modulator using surface state photodiodes A surface state photodiode is used as the photosensitive element for a Spatial Light Modulator, which includes a liquid crystal layer. The surface of the photodiode which faces the liquid crystal layer has formed thereon surface states, by means of adsorp... | 03/13/1990 |
| 4907881 | Precision alignment device Apparatus for providing automatic alignment of beam devices having an associated structure for directing, collimating, focusing, reflecting, or otherwise modifying the main beam. A reference laser is attached to the structure enclosing the main beam produ... | 03/13/1990 |
| 4866406 | Wide-band optical modulator The present invention provides a wide band optical modulator comprising an optical waveguide which is provided on a substrate and comprises a substance having electrooptic effects, a laminate which is provided on the optical waveguide and comprises a subs... | 09/12/1989 |
| 4822149 | Prismatic ferroelectric beam steerer A ferroelectric beam steering device for operation at millimeter wavelengths applicable for use as a component in radar systems. Electrodes direct fields reversibly and continuously modify the refractive character of the ferroelectric material of the devi... | 04/18/1989 |
| 4717893 | Spatial light modulator Improved spatial light modulators, each consisting of an electron beam source formed within a vacuum envelope, i.e., a photoelectric layer; and a electro-optical crystal to store electrons emitted from the electron beam source as a charge to change the op... | 01/05/1988 |
| 4706094 | Electro-optic beam scanner A scanner (13) of ferroelectric material (17) for redirecting the orientation of a beam (22) of millimeter wavelength radiation. The scanner (13) includes parallel input and output sides with matching layers (44). Adjacent and opposite parallel wire grid ... | 11/10/1987 |
