Abstract: An array substrate includes a switching device, a storage capacitor and a voltage-dividing capacitor. The switching device is formed in a pixel region defined by two gate lines adjacent to each other and two data lines adjacent to each other. The storage capacitor is electrically connected to the switching device. The voltage-dividing capacitor is disposed between the storage capacitor and one of the gate lines. The voltage-dividing capacitor is electrically connected to the storage capacitor. Therefore, an overlapping area with the data lines is reduced to reduce the RC delay and enhance aperture ratio. Furthermore, a possibility of occurrence of an electrical short is reduced.
Abstract: Provided are a print head and an image forming apparatus. The print head, which selectively irradiates light to each pixel of an image on a photoconductor, the print head includes an illumination unit, which emits light, a liquid crystal layer, which transmits or intercepts the light incident from the illumination unit on a unit pixel basis according to an applied voltage, and a microlens array formed of liquid crystal polymer, which either focuses or does not focus the light passed through the liquid crystal layer onto the photoconductor.
Abstract: The specification describes multimode optical fibers with specific design parameters, i.e., controlled refractive index design ratios and dimensions, which render the optical fibers largely immune to moderately severe bends. The modal structure in the optical fibers is also largely unaffected by bending, thus leaving the optical fiber bandwidth essentially unimpaired. Bend performance results were established by DMD measurements of fibers wound on mandrels vs. measurements of fibers with no severe bends.
Type:
Grant
Filed:
August 17, 2009
Date of Patent:
August 27, 2013
Inventors:
Jinkee Kim, George E. Oulundsen, Durgesh Shivram Vaidya, Man F. Yan, Xinli Jiang
Abstract: An optical noise reduction mechanism for reducing undesired frustration of total internal reflected light. Such optical noise may stem from defects in waveguide construction. Such optical noise may also stem from the difference in refractive index between any cladding layers disposed onto the planar waveguide and the refractive index of the medium (e.g., air) between the light sources and the light insertion surface of the planar waveguide. By interposing a material of appropriate refractive index, either as a thin layer onto the light insertion surface of the waveguide or filling the space between the waveguide and the light source, the planar waveguide becomes more tolerant of geometry errors and cladding layer properties because a safe operating area is established between the unadjusted critical angle of the system and the actual range of ray angles allowed admittance into the waveguide.
Abstract: A doping profile for a modulator facilitates rapidly changing the carrier density in a waveguide. The carrier density change causes rapid changes in the index of refraction of the waveguide. Example modulators include a ring modulator and a Mach Zender modulator. A charge reciprocating section may be provided to control the amount of injected charge.
Abstract: A fiber optic cable includes at least one optical fiber and two electrical conductors. A mid-span connection point in the fiber optic cable has a configuration for attaching an opto-electronic component to the optical fiber and electrical conductors. At least one RF antenna is also included and is electrically connected to the opto-electronic component. A fiber optic cable assembly includes a plurality of optical fibers and at least two electrical conductors. An opto-electrical transceiver is in optical and electrical communication with the optical fibers and electrical conductors. An RF antenna is also in electrical communication with the opto-electrical transceiver.
Type:
Grant
Filed:
May 19, 2006
Date of Patent:
June 25, 2013
Assignee:
Corning Cable Systems LLC
Inventors:
Martyn N. Easton, James G. Renfro, Jr., Michael Sauer
Abstract: There is provided an exposure device including: a light-emitting element array having an elongated support and plural light-emitting elements, the light-emitting elements being arranged in at least one row along a length direction of the support such that a spacing between two adjacent light-emitting elements is a pre-specified first spacing; and a hologram element array having a hologram recording layer disposed on the support and plural hologram elements formed, the plural hologram elements corresponding with each of the light-emitting elements and being formed such that a spacing along the support length direction between two adjacent hologram elements is the first spacing, and a diameter in the support length direction of each of the plural hologram elements being larger than the first spacing, such that a respective light emitted from each of the light-emitting elements is diffracted and focused toward a pre-specified image-forming plane by the corresponding hologram element.
Abstract: A fiber laser system is configured with a power measuring assembly surrounding a splice between two fibers. The power measuring assembly is operative to maintain the splice at a substantially constant splice temperature and shield the spliced fibers from external bending stresses so as to provide for power readings of the laser system at the splice independently from the influence of multiple variable external factors.
Abstract: A fiber alignment device comprises a base having at least one alignment groove, a stripped portion of an optical fiber positioned in the at least one alignment groove, where a terminal end of the fiber extends beyond at least one of an end face of the base, and an end face of a cover bonded to the base to secure the optical fiber between the base and the cover, where an end face of the cover and the end face of the base are substantially non-parallel.
Type:
Grant
Filed:
June 16, 2006
Date of Patent:
May 21, 2013
Assignee:
3M Innovative Properties Company
Inventors:
Barry S. Carpenter, Terry L. Smith, Stephen J. Znameroski
Abstract: A roll stocker includes a plurality of roll fixing units for fixing a plurality of rubbing rolls; shaft connection parts having a plurality of radially extended end portions connected with each roll fixing unit; and a rotational shaft for fixing the center of the shaft connection parts and rotating the shaft connection parts. A plurality of rubbing rolls can be rotated, and by keeping the plurality of rubbing rolls in storage in the closed roll stocker, contamination of a rubbing cloth due to external particles can be prevented, space utilization can be enhanced, and deviation of eccentricity of the rubbing rolls kept in storage can be prevented.
Abstract: According to one embodiment, when performing monochrome image forming, image processing circuits for color image forming, laser control circuits for the color image forming and data processing circuits for the color image forming in an integrated circuit are not operated.
Abstract: An optoelectronic apparatus for controlling a signal includes an optical waveguide having a variable refractive index; an active device formed within the waveguide, the device having three electrodes, a drain, a source and a gate; and wherein the device is located within the waveguide so that current flowing from the drain to the source changes the refractive index.
Type:
Grant
Filed:
August 4, 2009
Date of Patent:
March 26, 2013
Assignee:
International Business Machines Corporation
Inventors:
William Michael John Green, Yurii A. Vlasov
Abstract: An opto-electronic connector module includes an optical waveguide portion including an optical waveguide in which an optical signal is transmitted, and a connector portion coupled to the optical waveguide portion, fixing the optical waveguide portion on a PCB on which a semiconductor chip portion having an opto-electronic device and a semiconductor chip is surface-mounted, and having a first coupling portion having a convex or concave structure formed in a lower portion thereof. The first coupling portion of the connector portion is coupled to a second coupling portion having a concave or convex structure formed on an upper surface of the PCB.
Type:
Grant
Filed:
August 13, 2007
Date of Patent:
January 29, 2013
Assignee:
Electronics and Telecommunications Research Institute
Inventors:
Jin Tae Kim, Jung Jin Ju, Sun Tak Park, Seung Koo Park, Min Su Kim, Myung Hyun Lee
Abstract: A rare earth-doped core optical fiber of the present invention includes a core comprising a silica glass containing at least aluminum and ytterbium, and a clad provided around the core and comprising a silica glass having a lower refraction index than that of the core, wherein the core has an aluminum concentration of 2% by mass or more, and ytterbium is doped into the core at such a concentration that the absorption band which appears around a wavelength of 976 nm in the absorption band by ytterbium contained in the core shows a peak absorption coefficient of 800 dB/m or less.
Abstract: A metamaterial inclusion structure (MIS), a metamaterial and a method of producing an optical magnetic response employ interspersed plasmonic and dielectric materials. The MIS includes first petals of a plasmonic material and second petals of a dielectric material that alternate at a surface and along a periphery of the MIS. The MIS exhibits the magnetic resonance when illuminated by an optical signal at an optical wavelength. The optical signal has a magnetic field component that is parallel with an interface between the first petals and the second petals. The metamaterial includes a plurality of the MIS arranged in an array and provides an optical magnetic susceptibility at the optical wavelength. The method forms the MIS with the alternating petals and includes illuminating the MIS with the optical signal.
Type:
Grant
Filed:
October 3, 2008
Date of Patent:
November 20, 2012
Assignee:
Hewlett-Packard Development Company, L.P.
Abstract: A tilting mirror MEMS variable optical attenuator attenuates light over a band of wavelengths with minimum wavelength dependent loss. The attenuator includes a lens that has a wedged input face and is made from a material that has high dispersion. The lens design causes different wavelengths to travel different paths through the attenuator such that wavelength dependent loss is reduced. The attenuator may be designed to have minimum wavelength dependent loss at a specified attenuation greater than zero.
Type:
Grant
Filed:
July 2, 2009
Date of Patent:
October 2, 2012
Assignee:
NeoPhotonics Corporation
Inventors:
Asif A. Godil, Kenneth Honer, Matthew Lawrence, Eric Gustafson
Abstract: An optical waveguide with a tubular or hose-like housing is provided, which is used in a high-temperature environment, such as, for example, in a burner. The housing has an input opening, an output opening and a center line extending from the input opening to the output opening. In the interior of the housing, transparent spheres are lined up along with center line. The light is guided on account of the refraction of a light beam upon entering and exiting from the transparent spheres.
Type:
Grant
Filed:
August 16, 2007
Date of Patent:
September 25, 2012
Assignee:
Siemens Aktiengesellschaft
Inventors:
Gilbert Braun, Volker Ertle, Christian Henke, Gülsen Kisaboyun, Andreas Pahl, Bernd Prade, Uwe Scheuer, Wolfgang Stammen, Edmund Zastrozny
Abstract: Electrophotographic print system, comprising a photosensitive medium, and a laser array being provided with a plurality of laser diodes arranged to emit light onto the photosensitive medium for varying an electrical potential on a surface of the photosensitive medium, and a plurality of heat dissipation diodes, each heat dissipation diode being arranged in proximity to a corresponding laser diode, wherein each laser diode and the corresponding heat dissipation diode are coupled to a common drive circuit and are arranged in opposite current flow directions with respect to each other, so that in use the current flows either through the laser diode or through the heat dissipation diode depending on the current flow direction in the drive circuit.
Type:
Grant
Filed:
October 11, 2009
Date of Patent:
September 4, 2012
Assignee:
Hewlett-Packard Indigo B.V.
Inventors:
Boaz Tagansky, Michael Plotkin, Craig Breen
Abstract: A tapered waveguide optical mode transformer (20) includes a tapered core formed on a planar substrate structure (16). To vertically taper the core (21), steps (22) are etched into the top surface of the core. The steps have depths and lengths along the optical axis of tapered waveguide that are selected to transform the optical mode characteristics of a desired optical fiber to the optical mode characteristics of a desired planar waveguide. The core can also be tapered horizontally to form a 2-D tapered waveguide. The tapered waveguide can be integrally included in planar lightwave circuits (PLCs) to reduce light coupling losses between optical fibers and the PLC waveguides.
Type:
Grant
Filed:
August 22, 2005
Date of Patent:
August 28, 2012
Assignee:
Molex Incorporated
Inventors:
Masum Choudhury, Moshe Oron, Thomas R. Stanczyk, Ram Oron, Ariela Donval, Dean Richardson
Abstract: A method for cutting a liquid crystal display panel includes transferring a pair of mother substrates on which a plurality of panel regions have been disposed to a scribing unit; forming first and second prearranged cut lines on front and rear surfaces of the mother substrates using a scribing unit; transferring the mother substrates with the first and second prearranged cut lines formed thereon to a breaking component; and moving a transfer unit which includes a body having a plurality of suction members and a steam generator installed at an edge of the body to an upper side of the mother substrates, and separating liquid crystal display panels formed at the panel regions from a dummy glass therearound while spraying steam onto the surface of the mother substrates through the steam generator of the transfer unit.