Did You Know...
...that in the early 1940s GE engineer James Wright was charged with a task of utmost importance to the war effort: develop a cheap substitute for rubber that could be used to produce tires, gas masks and a whole host of military gear. Wright tackled the task diligently -- and wound up inventing Silly Putty.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7403677 | Fiberoptic reconfigurable devices with beam shaping for low-voltage operation An apparatus and method to operate on a light beam by using a lens that collimates the light beam to a collimated beam with at least one cross-sectional dimension less than a critical dimension of 400 μm or less over a working range WR. The apparatus has a bulk ele... | 07/22/2008 |
| 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 |
| 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 |
| 7206116 | Faraday rotator A Faraday rotator for a Faraday isolator with an input polarizer, with an output polarizer, with a roller-shaped optical crystal that is arranged therebetween and that is arranged symmetrical to its axis of symmetry, with a right hollow cylinder that surrounds this ... | 04/17/2007 |
| 7095543 | Dual-electrode traveling wave optical phase shifters and methods The invention discloses phase-shifters, modulators, and method that produces a smaller π by means of a field excitation using multiple electrodes. A negative signal is introduced that travels with the positive signal, which enhances the electric field significantly... | 08/22/2006 |
| 7088489 | Launch interface electrode structure for suppressing coupling to substrate modes for electro-optic modulator A reduced size RF signal and ground electrode interface is configured to provide better field confinement of dominant coplanar waveguide mode in the propagation direction and reduce coupling RF energy into a substrate beneath the launch, while matching the impedance... | 08/08/2006 |
| 7057787 | Architecture for large-FOR EO-crystal-based agile beam steering An electro-optic crystal based beam-steering device preferably based on KTN, having a first deflector and a second deflector. The first deflector has a pair of substrates each having a plurality of first electrode lines extending along a first direction and a plural... | 06/06/2006 |
| 6900920 | Variable semiconductor all-optical buffer using slow light based on electromagnetically induced transparency A variable semiconductor all-optical buffer and method of fabrication is provided where buffering is achieved by slowing down the optical signal using a control light source to vary the dispersion characteristic of the medium based on electromagnetically induced tra... | 05/31/2005 |
| 6760140 | Binary optical interconnection An optical interconnection device and a spot displacement device are presented. In optical interconnection device of the present invention, a spot displacement device is employed to cause a light beam to shift positions, thereby making available output positions not... | 07/06/2004 |
| 6552838 | LiNbO3 Mach-Zehnder modulator with low drive voltage requirement and adjustable chirp An electro-optic modulator and associated method are provided. The electro-optic modulator includes an optical waveguide comprised of two pairs of coplanar modulation strips, the strips being driven by a controller circuit which applies voltages of equal ... | 04/22/2003 |
| 6137619 | High-speed electro-optic modulator An optical modulator is provided to control the intensity of a transmitted or reflected light. In a transmission mode, a separator splits arbitrarily polarized light into two polarization rays and one is made to travel a separate path from the other. A re... | 10/24/2000 |
| 6081321 | Solid-state scanning-type optical writing device Disclosed is a full color printer which comprises a optical writing head for writing a latent image onto a printing paper such as a silver salt-sensitive member. The optical writing head has an array of optical shutter elements each of which is made of PL... | 06/27/2000 |
| 6057955 | Optical modulator and drive method thereof An optical modulation element is constructed of an electro-optic crystal substrate, which includes individual electrodes arrayed and formed one-dimensionally on one surface of the substrate and also includes a common electrode formed on the other surface ... | 05/02/2000 |
| 6034809 | Optical plasmon-wave structures Optical plasmon-wave attenuator and modulator structures for controlling the amount of coupling between an guided optical signal and a surface plasmon wave. Optical power coupled to the plasmon wave mode is dissipated in varying amounts producing an inten... | 03/07/2000 |
| 5943154 | Optically-controlled light control element A light control element comprising a light control layer containing an electron donating organic compound and an electron accepting organic compound and means for applying an external electric field having an intensity less than a value which is required ... | 08/24/1999 |
| 5880871 | Minimizing radiation damage in nonlinear optical crystals Methods are disclosed for minimizing laser induced damage to nonlinear crystals, such as KTP crystals, involving various means for electrically grounding the crystals in order to diffuse electrical discharges within the crystals caused by the incident las... | 03/09/1999 |
| 5550370 | Potential sensor employing electrooptic crystal and potential measuring method A high-resistance compound semiconductor 12 is epitaxially grown on a low-resistance compound semiconductor 11 and a dielectric reflecting film 13 is formed thereon, thereby forming a monolithic sensor 10. As the low-resistance compound semiconductor 11, ... | 08/27/1996 |
| 5434698 | Potential sensor employing electrooptic crystal and potential measuring method A high-resistance compound semiconductor 12 is epitaxially grown on a low-resistance compound semiconductor 11 and a dielectric reflecting film 13 is formed thereon, thereby forming a monolithic sensor 10. As the low-resistance compound semiconductor 11, ... | 07/18/1995 |
| 5241376 | Cinematographic system A cinematographic system records motion-picture images on an elongate information recording medium which includes either a charge storage layer or a light modulating layer. The recorded images are reproduced and projected onto a screen. If the charge stor... | 08/31/1993 |
| 5227885 | Charge latent image recording medium and charge latent image reading out system A charge latent image recording medium includes an electrode, a dielectric member, a member suppressing a transfer of charges, and a photoconductive member laminated in the order without any gaps therebetween. A system for reading a charge latent image re... | 07/13/1993 |
| 5191408 | Color imaging system with selectively openable optical shutter A color imaging system for use as an electronic still camera, for example, includes a color separator for separating the optical image of a subject from a lens into a plurality of different color images, an optical shutter selectively openable for transmi... | 03/02/1993 |
| 5170281 | Spatial light modulation device capable of arbitrarily selecting an input/output characteristic 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 ... | 12/08/1992 |
| 5161007 | Recording head with carrier generation and transport layers adjacent a photo-modulation layer for recording information included in an electro-magnetic radiation-beam applied thereto A recording apparatus comprises first electrode, color-separation filter, recording, carrier generation, carrier transport, and second electrode layers which are laminated in order of mention. The recording layer and carrier generation layer may be separa... | 11/03/1992 |
| 5159456 | Photo-to-photo transducer and method of operation using a photo-moldulation member affected by a change distribution in a photoconductive member and a voltage applied across electrodes A photo-to-photo transducer is composed by laminating a photoconductive layer member and a photo-modulation layer member including liquid crystals of scattering type each other and disposing the members between two transparent electrodes. The transducer i... | 10/27/1992 |
| 5153667 | Apparatus for detecting the change of light intensity A light beam is chopped and split into two beams. Intensity of a first beam is changed by using, e.g., an electrooptic material in accordance of a change in a signal to be detected, such as a voltage in an electronic device, and detected by a first photod... | 10/06/1992 |
| 5144415 | Apparatus for processing information carried by electro-magnetic radiation beam An apparatus for processing information carried by an electro-magnetic radiation beam. The apparatus includes a charge holding member for storing a charge latent image, a generator for generating an electro-magnetic radiation beam which is a superimpositi... | 09/01/1992 |
| 5144443 | Apparatus for reproducing charge latent image with vibration of electrode to modulate field generated by image thereby electro-optically modulating a reading light There is provided an apparatus for reproducing a charge latent image prerecorded on a recording medium composed of at least a photo-modulation layer and a charge holding layer laminated thereto and holding said charge latent image. The apparatus has two e... | 09/01/1992 |
| 5055936 | Charge latent image recording medium and recording/reproducing apparatus thereof There is provided a recording medium for recording information in a form of a charge latent image. The recording medium comprises, at least, an electrode through which an electro-magnetic radiation beam passes, a photo-conductive layer (hereinafter abbrev... | 10/08/1991 |
| 4915481 | Apparatus for preventing space charge buildup effects in electrically controllable optical transmission cells A Kerr cell in an electro-optical shutter is coupled in a leg between "H connected" switches so as to reverse the polarity of the actuating potential applied across the cell.... | 04/10/1990 |
| 4902111 | Method and device for driving electro-optical light shutter array A driving device for a light shutter array having a plurality of serially aligned shutter elements each having an electro-optical effect to polarize an incident light by applying an electric field thereto. The device includes a plurality of individual ele... | 02/20/1990 |
| 4794296 | Charge transfer signal processor The disclosed charge transfer signal processor includes a vacuum housing having an input face and a output face, a 2-D electromagnetic input means cooperative with said input face for providing a 2-D input electronic charge signal within the vacuum housin... | 12/27/1988 |
| 4784476 | Nipi refractive index modulation apparatus and method Various optical modulation systems and methods are disclosed which are based upon modulating the refractive index of a nipi structure. The refractive index modulation is accomplished by applying a controlled voltage differential across the n-doped and p-d... | 11/15/1988 |
| 4636807 | Apparatus and method for light value gray scale recording Gray scale recording apparatus using an electro-optical light gate. The light gate comprises a series of side-by-side active electrode groups for controlling the recorded gray levels of corresponding side-by-side picture elements on a recording member. Ea... | 01/13/1987 |
| 4621903 | Electro-optic light shutter An electro-optic light shutter is disclosed which includes a ceramic body having electro-optic effect and a pair of electrodes applying A.C. voltage to the ceramic body to cause electro-optic effect, wherein the ceramic body is formed of PLZT ceramics hav... | 11/11/1986 |
| 4572616 | Adaptive liquid crystal lens A liquid crystal adaptive lens system wherein the index of refraction profile of the liquid crystal is controlled electrically to bring entering light to focus.... | 02/25/1986 |
| 4481531 | Microchannel spatial light modulator A microchannel spatial light modulator that has a photocathode to receive incident light and to provide a spatial distribution of photoelectrons (herein called an electron image) whose spatial number density is proportional to the spatial intensity of the... | 11/06/1984 |
| 4413885 | Electro-optical display device An electro-optical display device which comprises a twisted nematic liquid crystal layer and a photo-conducting layer. Two crossed electrode assemblies allow the liquid crystal to be made transparent at the points to be displayed. The light which passes a... | 11/08/1983 |
| 3953109 | Domain switching element In an irregular ferroelectric crystal plate having a domain switching element, the domain is made to grow unilaterally in a desired direction only, so that the domain wall is made movable in a desired direction only. The invention pertains also to a metho... | 04/27/1976 |
| 3949224 | Optical modulation system and frequency doubler using organo-substituted carboranes An optical modulation system and frequency doubler utilizes an organo-substituted carborane cell sandwiched between a pair of crossed polarizers. Light passing through the cell is rotated an amount determined by an electrical control signal applied across... | 04/06/1976 |
| 3944330 | Electro-optic device An electro-optic device comprises a plurality of first electrodes provided on a top substrate and a second electrode provided on a bottom substrate, the first electrodes confronting the second electrode through electro-optical matter which will show elect... | 03/16/1976 |
