Patent application number | Description | Published |
20110089146 | METHOD OF DETECTION OF WELDING WORKPIECE POSITION USING MOVABLE ELECTRODE - A spot welding system including spot welding gun having a movable electrode driven by a servo motor, a counter electrode arranged facing it and with a multiarticulated robot, holding one of the welding workpiece and spot welding gun which moves welding workpiece and spot welding gun relative to each other and thereby make the movable electrode and the welding workpiece approach each other from a separated state or vice-versa, monitoring the current or torque of the servo motor, and detecting the surface position of the welding workpiece from the position of the movable electrode and the position of the multiarticulated robot when the trend of the current or torque changes. The precision of detection of the surface position of the welding workpiece by a movable electrode in a spot welding system can now be improved without lengthening the time required for detection of the surface position of the welding workpiece. | 04-21-2011 |
20110120978 | SPOT WELDING SYSTEM - A spot welding system including a spot welding gun having a pair of electrodes disposed opposite to each other, and a servo motor for allowing the pair of electrodes to approach each other and separate from each other; a robot for movably holding either a spot welding gun or a workpiece so that a workpiece is disposed between the pair of electrodes of the spot welding gun; a physical quantity detection section for detecting a physical quantity correlative to torque or velocity of the servo motor; a position detection section for detecting positions of the pair of electrodes; a mode switching section for switching, by a switching command, an operation mode of the spot welding system between a spot welding mode for spot-welding the workpiece and a position correction mode for correcting a spot welding position of the workpiece; and a processing section for performing a spot welding process in the spot welding mode and a position correction process in the position correction mode. | 05-26-2011 |
20110180516 | POSITION DETECTION DEVICE AND A POSITION DETECTION METHOD FOR A WORKPIECE TO BE WELDED - A position detection device for a workpiece to be welded including a spot welding gun having a pair of electrodes adapted to be disposed opposite each other across the workpiece; a robot for holding either one of the spot welding gun and the workpiece in a manner movable relate to each other; a servo motor for allowing the pair of electrodes to approach the workpiece and separate from the workpiece; a physical quantity detection section for detecting a physical quantity correlative to a torque of the servo motor when the servo motor allows one of the pair of electrodes to approach a surface of the workpiece so that the one of the pair of electrodes abuts against the surface of the workpiece; a position detection section for detecting positions of the pair of electrodes; a storage section for storing the physical quantity detected by the physical quantity detection section and a value detected by the position detection section; and a computation section for calculating a contact start time at which the one of the pair of electrodes comes into contact with the surface of the workpiece based on time-series data of the physical quantity stored in the storage section, and computing a position of the workpiece at the contact start time based on the value detected by the position detection section stored in the storage section. | 07-28-2011 |
Patent application number | Description | Published |
20090213460 | LIGHT DIFFUSION FILM - A light diffusion film | 08-27-2009 |
20090213465 | LIGHT DIFFUSION FILM - A light diffusion film ( | 08-27-2009 |
20100238379 | COMPOSITE POLARIZING PLATE AND LIQUID CRYSTAL DISPLAY DEVICE - There is provided a composite polarizing plate used for a liquid crystal display device comprising a liquid crystal cell, a front substrate, and a collimated light source device according to present invention includes a polarizer; and a light diffusion pressure-sensitive adhesion layer placed on a side of the polarizer, wherein when the composite polarizing plate is used for the liquid crystal display device, the light diffusion pressure-sensitive adhesion layer is arranged in contact with the front substrate. | 09-23-2010 |
20100245727 | METHOD FOR PRODUCING POLARIZER, POLARIZER, POLARIZING PLATE, OPTICAL FILM, AND IMAGE DISPLAY DEVICE - A method for producing a polarizer of the present invention includes: subjecting a polyvinyl alcohol film to at least a dyeing process, a crosslinking process and a stretching process, then subjecting the film, in which all of the processes have been performed, having a water content of 25 to 55% by weight to a drying process, wherein in the drying process, the water content of the film is reduced by at least 15% by weight, so that the film has a water content of 5 to 35% by weight, and the drying process has a quick drying stage in which the water content of the film is reduced by at least 10% by weight in a time period of ½ to 1/30 of the total drying time of the drying process. The polarizer obtained by the production method has durability and has good optical properties over a wide band. | 09-30-2010 |
20110007248 | DEPOLARIZING FILM, PROCESS FOR PRODUCING THE SAME, AND LIQUID-CRYSTAL DISPLAY - Disclosed herein is a depolarizing film which is excellent in productivity and can have a large area. The depolarizing film is obtained by using birefringent very short fibers instead of inorganic birefringent crystals, such as calcite, for use in conventional depolarizing elements. | 01-13-2011 |
20110019279 | LIGHT DIFFUSING FILM AND PROCESS FOR PRODUCING THE LIGHT DIFFUSING FILM - A light diffusing film having superior productivity can be obtained by using very short fibers as a substitute for conventional spherical fine particles as light diffusing material. It is possible to mass-produce very short fibers at low cost, for example, by cutting fibers. Further, it is relatively easy to obtain very short fibers with a narrow fiber length distribution. The use of this makes it possible to carry out more highly sophisticated optical design of light diffusing films. | 01-27-2011 |
20110045177 | PROCESS FOR PRODUCTION OF LIGHT-DIFFUSING FILMS - There is provided a process for production of a light-diffusing film | 02-24-2011 |
20120003400 | LAMINATE OPTICAL BODY, OPTICAL FILM, LIQUID CRYSTAL DISPLAY APPARATUS USING SAID OPTICAL FILM, AND METHOD FOR PRODUCING LAMINATE OPTICAL BODY - The present invention provides a laminate optical body, which is excellent in production efficiency, shows an extremely small axis shift and can realize a liquid crystal display apparatus showing small display unevenness. The laminate optical body of the present invention includes an elongated polarizing film having an absorption axis in a short direction thereof, and including a base material layer and a hydrophilic polymer layer to which a dichromatic substance adsorbs; and an elongated retardation film having a slow axis in a lengthwise direction thereof. The polarizing film is a laminate including the base material layer and the hydrophilic polymer layer to which a dichromatic substance adsorbs. The laminate optical body is elongated. Preferably, the hydrophilic polymer layer has a thickness of 1 μm to 10 μm. | 01-05-2012 |
20130088778 | POLARIZING FIBER, POLARIZER, POLARIZING PLATE, LAMINATED OPTICAL FILM, AND IMAGE DISPLAY - As the polarizing fiber of the present invention, the cross sectional form perpendicular to the longitudinal direction has a sea-island structure, and the cross sectional form is continuously made up in the longitudinal direction. A resin (sea component) that constitutes the sea region of the sea-island structure comprises a dichroic dye, and a resin (island component) that constitutes the island regions of the sea-island structure is a transparent resin. The polarizing fiber of the present invention may be used as a forming material of a polarizer, for example. By using the above polarizing fiber, a polarizer wherein unevenness of the transmittance is small and cracks are less generated may be formed. | 04-11-2013 |
Patent application number | Description | Published |
20100079862 | POLARIZING FIBER, POLARIZER, POLARIZING PLATE, LAMINATED OPTICAL FILM, AND IMAGE DISPLAY - As the polarizing fiber of the present invention, the cross sectional form perpendicular to the longitudinal direction has a sea-island structure, and the cross sectional form is continuously made up in the longitudinal direction. A resin (sea component) that constitutes the sea region of the sea-island structure comprises a dichroic dye, and a resin (island component) that constitutes the island regions of the sea-island structure is a transparent resin. | 04-01-2010 |
20100296030 | OPTICAL FILM, POLARIZING PLATE, LIQUID CRYSTAL PANEL, LIQUID CRYSTAL DISPLAY, AND METHOD FOR PRODUCING OPTICAL FILM - An optical film that includes an optical compensation layer having a refractive index anisotropy satisfying nx>ny>nz. The optical compensation layer contains a polyvinyl alcohol resin subjected to ultraviolet cross-linking with a cross-linking agent having at least two double bonds, where nx: a refractive index in a direction (a slow axis direction) in which an in-plane refractive index of the optical compensation layer reaches its maximum ny: a refractive index in a direction (a fast axis direction) that is orthogonal to the nx direction within a plane of the optical compensation layer nz: a refractive index in a thickness direction of the optical compensation layer that is orthogonal to each of the nx and ny directions. | 11-25-2010 |
20120307179 | LIQUID CRYSTAL DISPLAY APPARATUS - A liquid crystal display apparatus according to an embodiment of the invention includes: a liquid crystal cell; polarizing plates placed on both sides of the liquid crystal cell; a light diffusing element provided outside of the polarizing plate on a viewer side; and a backlight unit provided outside of the polarizing plate on an opposite side of the viewer side. The backlight unit includes a collimated light source device that emits collimated light having a brightness half-value angle of 3° to 35° toward the liquid crystal cell, and a ratio Fw(BL)/Fw(FD) between a diffused light half-value angle Fw(FD) of the light diffusing element and the brightness half-value angle Fw(BL) of the collimated light is 0.5 or less. | 12-06-2012 |
20130181206 | ORGANIC EL DEVICE - An organic EL device with a light diffusing element that includes a matrix containing a resin component and an ultrafine particle component, and a light diffusing fine particle dispersed in the matrix. Refractive indices of the resin component, the ultrafine particle component, and the light diffusing fine particle satisfy the following expression (1). Further, the light diffusing element includes a concentration adjusted area formed outside a vicinity of a surface of the light diffusing fine particle, in which a weight concentration of the resin component decreases and a weight concentration of the ultrafine particle component increases as a distance from the light diffusing fine particle increases. | 07-18-2013 |
20130242241 | LIGHT DIFFUSING FILM, POLARIZING PLATE WITH LIGHT DIFFUSING FILM, LIQUID CRYSTAL DISPLAY DEVICE, AND LIGHTING EQUIPMENT - There is provided an extremely thin light diffusing film, which has strong light diffusibility, has suppressed backscattering, and is excellent in productivity. The light diffusing film includes: a first region having a first refractive index; a substantially spherical shell-shaped refractive index modulation region surrounding the first region; and a second region having a second refractive index, the region being positioned on a side of the refractive index modulation region opposite to the first region. The light diffusing film has a light diffusion half-value angle of 30° or more and a thickness of 4 μm to 25 μm, and satisfies the following expressions (1) and (2): | 09-19-2013 |
20130242395 | METHODS OF PRODUCING LIGHT DIFFUSING ELEMENT AND POLARIZING PLATE WITH LIGHT DIFFUSING ELEMENT, AND LIGHT DIFFUSING ELEMENT AND POLARIZING PLATE WITH LIGHT DIFFUSING ELEMENT OBTAINED BY THE METHODS - There is provided a method capable of producing an extremely thin light diffusing element, which has strong light diffusibility and in which backscattering is suppressed, at a low cost and with extremely high productivity. A method of producing a light diffusing element according to an embodiment of the present invention includes: mixing a matrix formation material containing a monomer of a resin component and an ultrafine particle component, light diffusing fine particles, and a solvent for dissolving the monomer; and polymerizing the monomer. A zeta potential of each of the light diffusing fine particles in a solution prepared by dissolving the monomer in the solvent is equal in sign to a zeta potential of the ultrafine particle component in the solution prepared by dissolving the monomer in the solvent. | 09-19-2013 |
20130265506 | LIGHT-DIFFUSING ELEMENT, POLARIZING PLATE HAVING LIGHT-DIFFUSING ELEMENT ATTACHED THERETO, POLARIZING ELEMENT, AND LIQUID CRYSTAL DISPLAY DEVICE EQUIPPED WITH THOSE COMPONENTS - There is provided a light diffusing element made of a thin film capable of realizing low back scattering and a high haze. A light diffusing element according to an embodiment of the invention includes: a first region having a first refractive index n | 10-10-2013 |
20130300980 | LIGHT-DIFFUSING ELEMENT, POLARIZER HAVING LIGHT-DIFFUSING ELEMENT, AND LIQUID CRYSTAL DISPLAY DEVICE HAVING SAME - There is provided a light diffusing element made of a thin film capable of realizing low backscattering and a high haze. A light diffusing element according to an embodiment of the present invention includes: a first region having a first refractive index; and a second region having a second refractive index. The first region and the second region form a fine uneven-shaped and spherical shell-shaped boundary. | 11-14-2013 |
20130301130 | LIGHT-DIFFUSING ELEMENT AND POLARIZING PLATE PROVIDED THEREWITH - There is provided a light diffusing element of a thin film, which has high light diffusibility and a small depolarization factor. A light diffusing element according to an embodiment of the present invention includes: a first region having a first refractive index; a refractive index modulation region having a substantially spherical shell shape, which surrounds the first region; and a second region having a second refractive index, which is positioned on a side of the refractive index modulation region opposite to the first region. The light diffusing element has a haze of 90% to 99.9% and a depolarization factor of 0.2% or less. | 11-14-2013 |
20130301135 | LIGHT DIFFUSING ELEMENT - A light diffusing element having less unevenness in external appearance while having excellent light diffusibility. A light diffusing element according to an embodiment of the present invention includes: a base material film; and a light diffusing film provided on one surface of the base material film, wherein: the light diffusing film has a haze value of 75% or more; the light diffusing film contains a fluorine-based surfactant; the fluorine-based surfactant is localized on a surface of the light diffusing film opposite to the base material film; and the fluorine-based surfactant contains at least one kind of constituent unit selected from the group consisting of a constituent unit represented by the following general formula (I), a constituent unit represented by the following general formula (II), and a constituent unit represented by the following general formula (III): | 11-14-2013 |