Patent application number | Description | Published |
20080298738 | Waveguide type wavelength domain optical switch - A waveguide type wavelength domain optical switch includes an input/output port including at least three waveguide spectrometers stacked in thickness direction, a first lens for collecting light outputted from an input port of the input/output port in one axis direction, a second lens for collecting light outputted from the first lens in a direction orthogonal to the collecting direction of the first lens, and an optical phase modulation cell for reflecting light outputted from the second lens through the second lens and the first lens to an output port of the input/output port. Alternatively, the input/output port may include at least two waveguide spectrometers and a waveguide optical coupler circuit stacked in thickness direction | 12-04-2008 |
20100067900 | Optical waveguide-type wavelength domain switch - An optical waveguide-type wavelength domain switch includes a waveguide-type multi/demultiplexing device laminate comprising three or more laminated waveguide-type multi/demultiplexing devices, a lens system positioned on a demultiplex side of the waveguide-type multi/demultiplexing device laminate, and a reflective optical phase-modulating cell positioned on an opposite side of the waveguide-type multi/demultiplexing device laminate to the lens system. The lens system includes a lens alignment composed of plural lenses in one-to-one correspondence with the waveguide-type multi/demultiplexing devices and having a light-collecting or collimating function in the lens-aligning direction, an image-magnifying optical system having an N:1 (N>1) image-magnifying function arranged on the optical phase-modulating cell side of the lens alignment, an f-f lens (Y) arranged on the optical phase-modulating cell side of the image-magnifying optical system, and having a light-collecting or collimating function in the same direction as the lens-aligning direction of the lens alignment, and an f-f lens (X) having a light-collecting or collimating function in a perpendicular direction to the lens-aligning direction of the lens alignment. | 03-18-2010 |
20130272650 | WAVELENGTH CROSS CONNECT DEVICE - A wavelength cross connect device includes an input demultiplexing optical system for demultiplexing light input from a plurality of input ports into respective wavelengths, a wavelength switching optical system for switching and outputting the lights of respective wavelengths input from the input demultiplexing optical system to respective desired ports, and an output multiplexing optical system for multiplexing the lights of respective wavelengths input from the wavelength switching optical system per port. The input demultiplexing optical system and the output multiplexing optical system includes a lens system that has a function of focusing lights independently in vertical and widthwise directions. The wavelength switching optical system includes two light deflector arrays for outputting incoming light of each wavelength after adjusting a horizontal reflection angle of the light, and a switching lens including a lens that has a focal length equal to the Rayleigh length and acts only in a widthwise direction. | 10-17-2013 |
Patent application number | Description | Published |
20100063615 | MACHINING STATUS MONITORING METHOD AND MACHINING STATUS MONITORING APPARATUS - A machining status monitoring apparatus is provided on a machine tool, and has a plurality of actual CCD cameras for imaging the tool and workpiece from different view points and generating actual two-dimensional image data thereof, a virtual image generating section having a plurality of virtual CCD cameras corresponding to the actual CCD cameras, in which the tool and workpiece of three-dimensional model are imaged by the virtual CCD cameras from each point and virtual two-dimensional image data thereof are generated, and a display control section for selecting one virtual CCD camera corresponding to the virtual two-dimensional image data in which the distal end of the tool is not hidden by the workpiece among the generated two-dimensional image data, and displaying the actual two-dimensional image data generated by the actual CCD camera corresponding to the selected virtual CCD camera on a display device. | 03-11-2010 |
20100063616 | MACHINING STATUS MONITORING METHOD AND MACHINING STATUS MONITORING APPARATUS - A machining status monitoring apparatus is provided on a machine tool, and has an actual CCD camera for imaging the tool and the workpiece and generating actual two-dimensional image data thereof, a virtual image generating section having a virtual CCD camera corresponding to the actual CCD camera, in which the tool and workpiece of three-dimensional model are imaged by the virtual CCD camera and virtual two-dimensional image data thereof are generated, and a display control section for receiving from a control device of the machine tool, information relating to the coolant supply state and checking whether coolant is being supplied to the contact portion of the tool and the workpiece, and displaying on a display device actual two-dimensional image data when coolant is not being supplied and displaying on the display device virtual two-dimensional image data when coolant is being supplied. | 03-11-2010 |
20100063617 | MACHINING STATE CHECKING METHOD AND MACHINING STATE CHECKING APPARATUS - The present invention provides a machining state checking apparatus and method for checking whether a workpiece mounted on a machine tool and a workpiece fixture are shifted. A machining state checking apparatus has an actual CCD camera for imaging a workpiece fixed on a machine tool and a workpiece fixture and generating actual two-dimensional image data thereof, a virtual image generating section for generating virtual two-dimensional image data of the workpiece and workpiece fixture based on data on three-dimensional models of the workpiece and workpiece fixture, a comparing section for comparing the actual two-dimensional image data and virtual two-dimensional image data generated by the actual CCD camera and the virtual image generating section, respectively, and determining whether they match each other by comparing the portions corresponding to the workpiece and workpiece fixture in the actual two-dimensional image and the virtual two-dimensional images of the workpiece and workpiece fixture. | 03-11-2010 |
Patent application number | Description | Published |
20090087687 | SULFONIC ACID POLYOL COMPOUND, POLYURETHANE RESIN, POLYURETHANE RESIN FOR MAGNETIC RECORDING MEDIUM, AND MAGNETIC RECORDING MEDIUM - A compound represented by the Formula below is provided. | 04-02-2009 |
20090214768 | PROCESS FOR PRODUCING MAGNETIC RECORDING MEDIUM - A process for producing a magnetic recording medium is provided, the process comprising in sequence a step of forming a non-magnetic layer by applying a non-magnetic coating liquid above a non-magnetic support, a step of curing the non-magnetic layer by irradiation with radiation, and a step of forming a magnetic layer above the cured non-magnetic layer, the non-magnetic coating liquid comprising a resin having a hydroxy group and/or an amino group and a compound having an isocyanato group and/or a substituent represented by Formula (1) below and a radiation curing functional group. | 08-27-2009 |
20090246560 | MAGNETIC RECORDING MEDIUM, METHOD OF MODIFYING SURFACE OF MAGNETIC POWDER AND MAGNETIC COATING MATERIAL - An aspect of the present invention relates to a magnetic recording medium comprising a magnetic layer comprising a ferromagnetic powder and a binder on a nonmagnetic support, wherein the magnetic layer comprises a compound denoted by general formula (1): | 10-01-2009 |
20090258254 | SULFONIC ACID POLYOL COMPOUND, POLYURETHANE RESIN, POLYURETHANE RESIN FOR MAGNETIC RECORDING MEDIUM, AND MAGNETIC RECORDING MEDIUM - A compound represented by the Formula below is provided. | 10-15-2009 |
20140356525 | METHOD OF MANUFACTURING MAGNETIC RECORDING MEDIUM - An aspect of the present invention relates to a method of manufacturing hexagonal ferrite magnetic powder. The method of manufacturing hexagonal ferrite magnetic powder comprises wet processing hexagonal ferrite magnetic particles obtained following acid treatment in a water-based solvent to prepare an aqueous magnetic liquid satisfying relation (1) relative to an isoelectric point of the hexagonal ferrite magnetic particles: pH0−pH*≧2.5, wherein, pH0 denotes the isoelectric point of the hexagonal ferrite magnetic particles and pH* denotes a pH of the aqueous magnetic liquid, which is a value of equal to or greater than 2.0, adding a surface-modifying agent comprising an alkyl group and a functional group that becomes an anionic group in the aqueous magnetic liquid to the aqueous magnetic liquid to subject the hexagonal ferrite magnetic particles to a surface-modifying treatment, and removing the water-based solvent following the surface-modifying treatment to obtain hexagonal ferrite magnetic particles. | 12-04-2014 |
Patent application number | Description | Published |
20120003503 | MAGNETIC RECORDING MEDIUM AND METHOD OF MANUFACTURING THE SAME - An aspect of the present invention relates to a method of manufacturing a magnetic recording medium comprising dispersing magnetic particles in a water-based solvent having a pH that is lower than an isoelectric point of the magnetic particles to prepare a magnetic liquid, wherein the dispersing is conducted to a state of dispersion where a particle diameter in liquid is equal to or lower than 35 nm; adjusting a zeta potential of the magnetic particles to within a range of 0 to 25 mV by modifying a surface of the magnetic particles with the addition of a prescribed surface-modifying agent to the. magnetic liquid; dispersing the magnetic particles after the adjusting together with an organic solvent and a binder to prepare a magnetic coating material; and forming a magnetic layer of the magnetic recording medium with the magnetic coating material that has been prepared. | 01-05-2012 |
20120243120 | MAGNETIC TAPE AND METHOD OF MANUFACTURING THE SAME, AND MAGNETIC RECORDING DEVICE - An aspect of the present invention relates to a magnetic tape comprising a magnetic layer containing a ferromagnetic powder and a binder on a nonmagnetic support, wherein
| 09-27-2012 |
20120244387 | METHOD OF MANUFACTURING HEXAGONAL FERRITE MAGNETIC POWDER, MAGNETIC RECORDING MEDIUM AND METHOD OF MANUFACTURING THE SAME - An aspect of the present invention relates to a method of manufacturing hexagonal ferrite magnetic powder. The method of manufacturing hexagonal ferrite magnetic powder comprises wet processing hexagonal ferrite magnetic particles obtained following acid treatment in a water-based solvent to prepare an aqueous magnetic liquid satisfying relation (1) relative to an isoelectric point of the hexagonal ferrite magnetic particles: pH0−pH*≧2.5, wherein, pH0 denotes the isoelectric point of the hexagonal ferrite magnetic particles and pH* denotes a pH of the aqueous magnetic liquid, which is a value of equal to or greater than 2.0, adding a surface-modifying agent comprising an alkyl group and a functional group that becomes an anionic group in the aqueous magnetic liquid to the aqueous magnetic liquid to subject the hexagonal ferrite magnetic particles to a surface-modifying treatment, and removing the water-based solvent following the surface-modifying treatment to obtain hexagonal ferrite magnetic particles. | 09-27-2012 |
20130108891 | MAGNETIC POWDER AND METHOD OF MANUFACTURING THE SAME, AND ITS USAGE | 05-02-2013 |
20130164563 | MAGNETIC PARTICLES AND METHOD OF MANUFACTURING THE SAME, AND USAGE THEREOF - An aspect of the present invention relates to a method of manufacturing magnetic particles, which comprises adding a carboxylic acid compound to a water-based magnetic liquid, wherein the water-based magnetic liquid comprises magnetic particles dispersed in an acidic water-based solvent, and the carboxylic acid compound is selected from the group consisting of aromatic compounds and aliphatic compounds having one or more carboxylic acid (salt) groups denoted by: | 06-27-2013 |
20130164564 | MAGNETIC PARTICLES AND METHOD OF MANUFACTURING THE SAME, AND USAGE THEREOF - An aspect of the present invention relates to a method of manufacturing magnetic particles, which comprises: adding a compound to a water-based magnetic liquid, wherein the water-based magnetic liquid comprises magnetic particles dispersed in an acidic water-based solvent, and the compound is selected from the group consisting of amine compounds, aromatic compounds, and aliphatic compounds having one or more monovalent phosphorus polar groups denoted by: | 06-27-2013 |
20130323161 | METHOD OF MANUFACTURING HEXAGONAL FERRITE MAGNETIC POWDER AND ITS USAGE - An aspect of the present invention relates to a method of manufacturing hexagonal ferrite magnetic powder, which comprises preparing a melt by melting a starting material mixture comprising a hexagonal ferrite-forming component and a glass-forming component and rapidly cooling the melt to obtain a solidified product, heating the solidified product to precipitate hexagonal ferrite magnetic particles and glass components in the solidified product, subjecting the solidified product to an acid treatment following the heating to remove the glass components by dissolution, incorporating the hexagonal ferrite magnetic particles obtained following the acid treatment into an acidic aqueous solution, followed by separating the particles dispersed in the aqueous solution and the precipitated particles, and subjecting the precipitated particles to a cleaning treatment and then collecting the particles. | 12-05-2013 |
20150302880 | MAGNETIC POWDER AND METHOD OF MANUFACTURING THE SAME, AND ITS USAGE - An aspect of the present invention relates to a method of manufacturing magnetic powder, which comprises adding an alkali metal salt compound comprising a substituent selected from the group consisting of an alkali metal salt of a carboxyl group and an alkali metal salt of a hydroxyl group to a water-based magnetic liquid comprising magnetic particles dispersed in an acidic water-based solvent to cause the magnetic particles to aggregate in the water-based magnetic liquid; and collecting the aggregated magnetic particles to obtain the magnetic powder. | 10-22-2015 |
Patent application number | Description | Published |
20140199018 | SEMICONDUCTOR POINTED STRUCTURE AND METHOD FOR FABRICATING SAME, SPOT SIZE CONVERTER, AND NON-REFLECTIVE TERMINATOR - A semiconductor pointed structure formed at an end portion of the core structure of a semiconductor photonic wire waveguide has a sloped side wall on at least one of the sides that constitute the pointed structure. The semiconductor pointed structure decreases in width and thickness towards the distal end. A method for fabrication of the structure is also disclosed. | 07-17-2014 |
20150036964 | LIGHT SOURCE CIRCUIT AND LIGHT SOURCE DEVICE EQUIPPED WITH SAME - A light source circuit transmits light incident from a semiconductor laser source to a plurality of optical devices. At least one optical branch section is formed to branch one input-side optical waveguide at least into a first output-side optical waveguide terminal and a second output-side optical waveguide terminal. A light path length (L1) between the optical branch section and a next-stage optical branch section or the optical device is connected to the first output-side optical waveguide extending from the optical branch section and a light path length (L2) between the optical branch section and the next-stage optical branch section selected such that the absolute value of a difference between (L1) and (L2) is (¼+i/2) times (i is zero or a positive integer) the wavelength of the light transmitted through the light source circuit. | 02-05-2015 |
20160047979 | METHOD FOR PROCESSING SILICON-BASED WIRE OPTICAL WAVEGUIDE - A method is provided for processing a silicon-based wire optical waveguide, by which an optical transmission loss of the silicon-based wire optical waveguide due to ion irradiation with high energy is suppressed, and an end portion of the silicon-based wire optical waveguide that is three-dimensionally curved in a self-aligning manner is obtained. According to the method a protective film is selectively formed on the silicon-based wire optical waveguide exclusive of the end portion of the silicon-based wire optical waveguide; and ions are implanted to the silicon-based wire optical waveguide in a particular direction, so as to curve the end portion of the silicon-based wire optical waveguide to the particular direction in a self-alignment manner. | 02-18-2016 |
20160139334 | INTERLAYER LIGHT WAVE COUPLING DEVICE - An interlayer light wave coupling device includes a substrate; a first core disposed on the substrate and having a first acute structure; a third core spatially set apart from the first core and having a second acute structure; and a second core disposed between the first core and the third core and having a smaller index of refraction than the first core and the third core. The acute structures of the first core and the third core are disposed so as to have no overlap as viewed from above. | 05-19-2016 |