Fluorinated polymers, method for producing the fluorinated compounds and polymers

A fluorinated polymer comprising a unit represented by the following formula (1), a method for producing fluorinated compounds and the fluorinated polymers, and an optical/electrical material or coating material comprising the fluorinated polymer.

Waterproof inductive charging paddle

An induction type charging paddle engages a receptacle to charge a battery. The charging paddle has a housing, and a circuit board is located in the housing to control the charging operation. A case is located in the housing to accommodate the circuit board. The case is sealed to prevent the circuit board from becoming wet.

Waterproof inductive charging paddle

An induction type charging paddle engages with a receptacle to charge a battery. The charging paddle has a housing and a circuit board, which is located in the housing to control the charging operation. A case is located in the housing to accommodate the circuit board. The case is sealed to prevent the circuit board from becoming wet.

Method for producing fluorinated 1,3-dioxolane compounds, fluorinated 1, 3-dioxolane compounds, fluorinated polymers of the fluorinated 1,3-dioxolane compounds and optical or electrical materials using the polymers

A production method of fluorinated compounds, for producing a compound represented by formula (3) in a fluorine-based solution in a flow of fluorine gas after reaction of at least one type of compounds represented by formula (1) and at least one type of compounds represented by formula (2). Similarly, fluorinated compounds represented by formula (4) prepared by the fluorination of compounds obtained by the reaction of formula (1) and formula (2)′. The fluorinated polymers obtained by the polymerizations of formula (3) and (4) compounds are useful as an optical or electrical materials. wherein R1, R2, R3,R4, Rff1, Rff2, Rff3, Rff4, X, Y, Z, and n are defined in the specification respectively.

non-birefringent optical resin material

The birefringence that results from the orientation of high molecular weight resins is cancelled out and still they are provided with heat resistance. To attain this object, the invention provides an optical resin material comprising a transparent high molecular weight resin and a fine inorganic substance which, as the linked chains in the high molecular weight resin are oriented under an external force, is oriented in the same direction as the linked chains and which has birefringence, the birefringence of said inorganic substance cancelling out the birefringence in orientation of the oriented high molecular weight resin. The invention also provides a process for producing the optical resin material, as well as optical components, an adhesive, substrates for a liquid-crystal device, and polarizing plates for the device.

Liquid crystal display apparatus

A liquid crystal display apparatus comprises: a liquid crystal display panel including a liquid crystal cell between a first polarizing plate and a second polarizing plate; and a surface light source device having a light source unit and a light guide plate. In a polarized light output from the light guide plate, when the normal direction of a light output surface is defined to be at a polar angle of 90°, and the light guiding direction of the light guide plate is defined to be a direction of an azimuth angle of 0°-180°, a ratio La/Lt of integrated intensity La of output light in ranges where the polar angle is 50° to 80° and the azimuth angle is 135° to 225°, 0° to 45°, and 315° to 360° to integrated intensity Lt of total output light is 0.3 or more.

Brake control device for vehicle

A brake control device for a vehicle includes: a hydraulic brake device including a master cylinder, a wheel cylinder, a differential pressure control valve, and a pump; and a differential pressure control unit that operates the pump and transmits a differential pressure instructing output to the differential pressure control valve to perform a differential pressure control such that a differential pressure is generated; wherein the differential pressure control unit includes a correcting unit, wherein the correcting unit calculates a differential pressure instructing correction amount, based on an increased amount of the differential pressure which is generated by the differential pressure control valve when the increased amount of the differential pressure during the differential pressure control and then corrects the differential pressure instructing output based on the differential pressure instructing correction amount such that the differential pressure instructing output becomes ...

Liquid crystal display apparatus

A liquid crystal display apparatus includes a liquid crystal display panel including a liquid crystal cell between first second polarizing plates; and a surface light source device. The surface light source device includes a light source unit, a light guide plate for outputting first directivity light having directivity of maximum intensity in a first direction, which forms a predetermined angle from a normal direction of the light output surface in a plane approximately parallel to a light guiding direction of light, and having a high ratio of a polarized light component oscillating in the plane and a prism sheet being configured to convert the first directivity light into second directivity light directed in a second direction within a predetermined angle from the normal direction of the light output surface of the light guide plate while substantially maintaining a polarization state of the first directivity light.

Illuminative light communication device

The present invention has been developed considering the above-described problems and aims to provide various structures and applications for illuminative light communication. According to the first aspect of the prevent invention, a broadcast system includes an LED light source 115 for lighting, a power line 103 that supplies electric power to the LED light source 115, a data modulator 102 that modulates and multiplexes a plurality of pieces of data, superimposes the resulting signal on an electric power waveform, and then transmits the resulting superimposed signal waveform to the power line 103, and a filter 112 that selectively separates one or more of a plurality of pieces of modulated data on the power line so as to control light intensity or blinking of the LED light source. Data is transmitted through changes in light intensity or blinking of the LED light source.

Display device, and method for selecting optical film for display device

There is provided a display device exhibiting a good color reproducibility, even when observed through polarized sunglasses. A display device comprises a display element, and a polarizer a and an optical film X on a surface on a light emitting surface side of the display element, wherein L1, which is the light incident vertically on the optical film X, among light incident on the optical film X from the display element side, satisfies a specific condition, and L2, which is the light emitting vertically from the light emitting surface side of the optical film X, and passing through a polarizer b having the absorption axis parallel to the absorption axis of the polarizer a, satisfies a specific condition.

Substrate and metal layer manufacturing method

This substrate includes an insulating substrate having a first surface and a second surface, and a metal layer of a metal plate bonded to the first surface. The insulating substrate has a through hole. The metal layer includes: a bent section that is inserted through the through hole and bulges from the first surface toward the second surface; and outer periphery sections that are positioned around the bent section and are bonded to the first surface. The bent section has a first end and a second end positioned on opposite sides, and is bent with respect to the outer periphery sections at the first end and the second ends. The outer periphery sections are divided into a first outer periphery section and a second outer periphery section, which are respectively continuous with the first end and the second end of the bent section.

Communications System and Leaky Optical Fiber

A communications system implementing high-speed, high-quality communication in an oblong communication range such as mobile communication, and a leaky optical fiber preferably used in such communications system are provided. An optical fiber (2) is a GI-type optical fiber having a core structured such that the refractive index at the center is large, gradually decreasing as it approaches the periphery, and may have scatterers mixed therein. When modulated light enters the optical fiber (2) from a transmitter (1), the modulated light proceeds through the optical fiber (2) while a part of the light leaks from the side thereof. A receiver (3) receives this leaked light, and demodulates it so as to obtain data. Since the optical fiber (2) is a GI type, high-speed, high-quality mobile communication is possible with little waveform deformation.

Inverted circuit overcurrent protection device and hybrid integrated circuit device with the same incorporated

An inverter circuit overcurrent protection device in which an overcurrent detection resistor (Rs) is incorporated in a hybrid integrated circuit, in which a detection voltage from the overcurrent detection resistor (Rs) is divided by voltage dividing resistors (R1 and R2) and is compared with a reference voltage in an overcurrent detection circuit, for carrying out an overcurrent protection, and an external resistor is connected in series or in parallel with one of the voltage dividing resistors (R1 and R2) to change a division ratio so that the level of overcurrent protection can be adjusted; and an embodiment wherein, in the vicinity of a current detection terminal, a first pad (P1) is connected to a detection voltage from the overcurrent detection resistance, a second pad (P2) is connected to a detection voltage from the amplifier, and a third pad (P3) is connected to the voltage dividing resistors, and a bonding wire (10) is connected between the current detection terminal one of said ...

CIRCUIT MODULE

To improve reliability of a circuit module by improving heat release performance and minimizing thermal influence on a device to be mounted, a base substrate having a first substrate mounted thereon is fitted into a lower portion of casing member, and a second substrate is installed in the upper portion of the casing member so that a spaced area can be provided. In addition, a drive device to be installed on the second substrate is positioned off the center of the second substrate.

Wiring board

This wiring board is provided with an insulating core substrate, a first conductor pattern, a second conductor pattern, and a conductive material. The first conductor pattern and the second conductor pattern are adhered to the insulating core substrate. The second conductor pattern has a first surface and a second surface. The second conductor pattern has a concavity and a through-hole. The opening of the concavity that opens to the first surface and the opening of the through hole that opens to the first surface are interconnected to each other. The first conductor pattern is positioned at the opening of the concavity. The first conductor pattern and the second conductor pattern are electrically connected by means of the conductive material, which fills from the opening of the through hole that opens to the second surface.

EXTRUSION MATERIAL SUPPLY DEVICE AND OPTICAL TRANSMISSION BODY MANUFACTURING METHOD USING THE SAME

The invention provides an extrusion material supply device suitable for use in melt extrusion molding, and a method for manufacturing an optical transmission body, in which a deterioration of an optical signal transmission loss is extremely small, and productivity intrinsic to an extrusion molding method is provided in combination. An extrusion material supply device includes: a vertical hopper which has a cooling unit and a heat melting unit continuous with a lower portion thereof, and houses a material rod R; cooling means for cooling the cooling unit an electric heater that heats the heat melting unit and gas pressurizing means for sequentially supplying molten plastics M to a metal die by a gas pressure. The heat melting unit is formed into a cylinder shape in which an inner diameter is larger than an inner diameter of the cooling unit arranged above, and enables the molten plastics M to spread in the heat melting unit A portion between an outer circumference of the material rod R and an outer circumference of the molten plastics M is defined as an annular gas pressurizing surface 1. An extrusion material supply device that heat melts a rod-like plastic material and supplies the rod-like plastic material to a metal die , the extrusion material supply device comprising:a container in which the rod-like plastic material is housed;a heat melting unit that is provided on a downstream side of the container and heat melts a lower end portion of the rod-like plastic material;heating means for heating the heat melting unit; andgas pressurizing means for sequentially supplying molten plastics to the metal die by a gas pressure.2. The extrusion material supply device according to claim 1 , wherein a cross-sectional area of an inner circumferential surface of the heat melting unit is larger than a cross-sectional area of the rod-like plastic material.3. The extrusion material supply device according to claim 1 , wherein the heating means is an electric heater and/or a far ...

INVERTED CIRCUIT OVERCURRENT PROTECTION DEVICE AND HYBRID INTEGRATED CIRCUIT DEVICE WITH THE SAME INCORPORATED

An inverter circuit overcurrent protection device in which an overcurrent detection resistor (Rs) is incorporated in a hybrid integrated circuit, in which a detection voltage from the overcurrent detection resistor (Rs) is divided by voltage dividing resistors (R1 and R2) and is compared with a reference voltage in an overcurrent detection circuit, for carrying out an overcurrent protection, and an external resistor is connected in series or in parallel with one of the voltage dividing resistors (R1 and R2) to change a division ratio so that the level of overcurrent protection can be adjusted; and an embodiment wherein, in the vicinity of a current detection terminal, a first pad (P1) is connected to a detection voltage from the overcurrent detection resistance, a second pad (P2) is connected to a detection voltage from the amplifier, and a third pad (P3) is connected to the voltage dividing resistors, and a bonding wire (10) is connected between the current detection terminal one of said ...

Hybrid integrated circuit device

In a molding process, a hybrid integrated circuit substrate is fixed the position of the substrate in a thickness direction. A leadframe is connected, with an upward inclination, to a hybrid integrated circuit substrate and transported into a mold cavity. By horizontally fixing the leadframe by mold dies, the hybrid integrated circuit substrate inclined upward is urged downward by a pushpin. This can fix the position of the hybrid integrated circuit substrate within the mold cavity and integrally transfer-molded.

Method of producing plastic optical member

The present invention discloses a method for producing plastic optical member comprising a core region and a clad region. The method comprises carrying out polymerization of a polymerizable monomer, thereby obtaining an area corresponding to the core region. The Polymerization is carried out in the presence of a polymerization initiator having a ten-hour, half-life decomposition temperature Th(° C.) (Tb−20≦Th; Tbis the boiling point (° C.) of the polymerizable monomer), at an initial polymerization temperature T1(° C.) (Tb−10≦T1≦Tg; Tgis the glass transition point (° C.) of the polymer made of the polymerizable monomer), for a period which is equal to or longer than 10% of the half-life of the polymerization initiator at T1; and further carried out at an elevated temperature T2(° C.) (Tg≦T2and T1 Подробнее

Method of manufacturing a hybrid integrated circuit device

In a molding process, a hybrid integrated circuit substrate is fixed the position of the substrate in a thickness direction. A leadframe is connected, with an upward inclination, to a hybrid integrated circuit substrate and transported into a mold cavity. By horizontally fixing the leadframe by mold dies, the hybrid integrated circuit substrate inclined upward is urged downward by a pushpin. This can fix the position of the hybrid integrated circuit substrate within the mold cavity and integrally transfer-molded.

Substrate

A substrate includes an insulating substrate, a metal layer formed on one surface of the insulating substrate, and an electronic component soldered to the surface of the metal layer. The metal layer is formed of a metal plate. The surface of the metal layer has a soldering area, and a groove portion positioned on the outer periphery of the soldering area.

HYBRID INTEGRATED CIRCUIT DEVICE AND MANUFACTURING METHOD THEREOF

A method of manufacturing a hybrid integrated circuit device of the present invention includes the steps of preparing a lead frame which constituted by units each having a plurality of leads, and fixing a circuit substrate on each unit of the lead frame by fixing pads which are formed on the surface of the circuit substrate to the leads, where a space between a first pad which is formed at an end edge of the circuit substrate and a second pad which is adjacent to the first pad is set narrower than a space between the pads themselves.

Method for producing fluorinated 1,3-dioxolane compounds, fluorinated 1, 3-dioxolane compounds, fluorinated polymers of the fluorinated 1,3-dioxolane compounds and optical or electrical materials using the polymers

A production method of fluorinated compounds, for producing a compound represented by formula (3) in a fluorine-based solution in a flow of fluorine gas after reaction of at least one type of compounds represented by formula (1) and at least one type of compounds represented by formula (2). Similarly, fluorinated compounds represented by formula (4) prepared by the fluorination of compounds obtained by the reaction of formula (1) and formula (2)'. The fluorinated polymers obtained by the polymerizations of formula (3) and (4) compounds are useful as an optical or electrical materials. wherein R1, R2, R3, R4, Rff1, Rff2, Rff3, Rff4, X, Y, Z, and n are defined in the specification respectively.

Electronic unit

An electronic unit includes a double-sided substrate having an insulation substrate, a patterned first metal plate bonded on one side of the insulation substrate, and a patterned second metal plate bonded on the other side of the insulation substrate, and also includes a heat radiation member for releasing heat from the double-sided substrate. The heat radiation member is disposed adjacent to one of the first metal plate and the second metal plate generating a larger amount of heat than the other of the first metal plate and the second metal plate.

Novel Copolymer of Methacrylic Ester, Composition, Optical Element and Electric Member

A copolymer of (meth)acrylic ester represented by a general formula (1) including a following repeating unit A and repeating unit B. In the general formula (1), R1 and R2 each independently represent hydrogen atom or methyl group; R3 represents an alkyl group having 1 to 4 carbon atoms; Y represents an atomic group forming an aromatic ring; x represents 1 to n, n represents the number of fluorine atoms which can be contained in the aromatic ring; and a and b each independently represent an integer of 1 or more.

Charger coupling

A charger coupling for charging a battery includes a paddle and a receptacle. The paddle and the receptacle exchange information by radio waves. The paddle includes waveguides for guiding radio waves between an antenna of the paddle and an antenna or the receptacle. The waveguides improve the radio communication between the paddle and the receptacle.

OPTICAL COLLIMATOR AND OPTICAL CONNECTOR USING SAME

In order to fix an optical fiber to a desired position in a holding member easily and tightly, provided is an optical collimator () having a plastic optical fiber () and a cylindrical holder (). The holder () is configured to hold a collimator lens () at an end and has an insertion hole () at an opposite end for inserting the plastic optical fiber (). The plastic optical fiber () is sandwiched by an inner surface of a recess () which is formed at a part of the holder () in proper alignment with the collimator lens (). 1. An optical collimator comprising: a plastic optical fiber; and a cylindrical holding member which is configured to hold a collimator lens at an end and has an insertion hole at an opposite end for inserting the plastic optical fiber , wherein the plastic optical fiber is sandwiched by an inner surface of a recess which is formed at a part of the holding member in proper alignment with the collimator lens.2. The optical collimator according to claim 1 , wherein the holding member is made of a metal material.3. The optical collimator according to claim 2 , wherein the recess comprises a plurality of recesses which is formed on one circumference of the holding member.4. The optical collimator according to claim 3 , wherein the recesses are provided in proximity to an end of a collimator lens side of the holding member.5. The optical collimator according to claim 3 , wherein the recesses are provided in proximity of an end of an insertion hole side of the holding member.6. The optical collimator according to claim 1 , wherein the recess comprises a plurality of recesses formed collinearly along an insertion direction of the plastic optical fiber.7. An optical connector for connecting the optical collimator according to any one of to . The present invention relates to an optical collimator used for gathering parallel light beams into an optical fiber and making light beams from the optical fiber parallel to each other, and to an optical connector using ...

Non-birefringence optical resin material, a production process therefor and a member for a liquid crystal device using the optical resin material

A non-birefringence optical resin material is obtained by forming a transparent matrix from a polymeric resin having an orientation birefringence with a positive or negative sign, adding a low molecular weight substance exhibiting an orientation birefringence with a sign opposite to that of the orientation birefringence of the polymeric resin for the matrix and thus offsetting the orientation birefringence of the polymeric resin for the matrix with the orientation birefringence of the low molecular weight substance.

Article with radial refractive index gradient and process for its manufacture

The transparent article with radial gradient index, according to the invention, comprises a matrix made of a first transparent polymer having a first refractive index n1 and a first Abbe number 1, a second transparent polymer, diffused into the first polymer in order to produce the radial gradient index and having a second refractive index n2, different than the first refractive index, and a second Abbe number 2, characterized in that it furthermore comprises an effective amount of an Abbe number modifier agent which reduces by at least 10%, preferably by at least 15%, and more preferably by at least 20%, the value of the Abbe number of that of the first or second polymer which has the refractive index with lower value.

OPTICAL MATERIAL AND MOLDED PRODUCT THEREOF

Disclosed is an optical material including a cyclic olefin copolymer containing at least a repeating structural unit [A] represented by the general formula (1) and a repeating structural unit [B] represented by the general formula (2) and having a molar ratio [A]/[B] of from 95/5 to 1/99, wherein the absolute value of the ratio ΔOB/ΔF is from 0.001 to 0.250 in which ΔOB represents the amount of a change in the absolute value of the orientation birefringence calculated from the phase difference (nm) at a wavelength of nm/film thickness (μm) in a stretched film obtained from the optical material, and ΔF represents the amount of a change in the absolute value of the orientation coefficient determined from the dichroic ratio of parallel light intensity I to perpendicular light intensity I, each relative to the orientation direction according to Raman spectroscopy. 3. The optical material as set forth in comprising a cyclic olefin copolymer containing at least a repeating structural unit [A] represented by the general formula (1) and a repeating structural unit [B] represented by the general formula (2) and having a molar ratio [A]/[B] of from 95/5 to 1/99 claim 1 ,{'sub': ∥', '⊥', '∥', '⊥, 'sup': '−1', 'wherein the absolute value of the orientation coefficient F=(D−1)/(D+2) that is a function of the dichroic ratio D=I/I of parallel light intensity I to perpendicular light intensity I, each relative to the orientation direction at 1,500 to 1,400 cmaccording to Raman spectroscopy in a molded product obtained from said optical material is equal to or more than 0.001, and'}{'sup': '−4', 'the absolute value of the orientation birefringence calculated from the phase difference (nm) at a wavelength of 633 nm/film thickness (μm) in a stretched film obtained from said optical material is equal to or less than 5×10.'}4. The optical material as set forth in comprising a cyclic olefin copolymer containing at least a repeating structural unit [A] represented by the general formula ( ...

Graded-refractive-index optical plastic material of a fluoropolymer containing a material in a concentration gradient therein

A graded-refractive-index optical plastic material composed of an amorphous fluoropolymer and at least one material which differs from the polymer in refractive index by at least 0.001, wherein the material is so distributed as to have a concentration gradient in a specific direction, and a method for its production.

Inverted circuit overcurrent protection device and hybrid integrated circuit device with the same incorporated

An inverter circuit overcurrent protection device in which an overcurrent detection resistor (Rs) is incorporated in a hybrid integrated circuit, in which a detection voltage from the overcurrent detection resistor (Rs) is divided by voltage dividing resistors (R1and R2) and is compared with a reference voltage in an overcurrent detection circuit, for carrying out an overcurrent protection, and an external resistor is connected in series or in parallel with one of the voltage dividing resistors (R1and R2) to change a division ratio so that the level of overcurrent protection can be adjusted; and an embodiment wherein, in the vicinity of a current detection terminal, a first pad (P1) is connected to a detection voltage from the overcurrent detection resistance, a second pad (P2) is connected to a detection voltage from the amplifier, and a third pad (P3) is connected to the voltage dividing resistors, and a bonding wire (10) is connected between the current detection terminal one of said ...

Non-birefringent optical resin material and its producing method

A non-birefringent optical resin material is composed of a resin material and inorganic fine particle material birefringence sign of which are the same. A molten resin material, which contains an inorganic fine particle material, dispersed therein, of the same birefringence sign as that of the resin. material, is caused to flow into a mold 4 through a gate 5. The molten material flows as to expand radially. Velocity vector of the flow has normal components P, R in addition to straight-ahead component S. Bonding chains of the resin material are generally orientated to the direction of velocity vector. In the vicinity of points A, B on an equiphase face 7, bonding chains of the resin material are generally orientated to lines extending from the exit of the gate 5 to point A and B, respectively. Flowing velocity has a gradient around each fine particle, causing the fine particle to be influenced by a moment and to tend to orientate so that the major axis of the particle is directed approximately ...

Illuminative light communication system

An light source control unit controls the flashing of a light source and the light amount of a light source according to information to be transmitted. Thus, light, which is modulated according to the information to be transmitted, is emitted from the light source. The light emitted from the light source is made to enter an optical fiber to pass therethrough and enter a light-scattering body which scatters and radiates the modulated light incident from the optical fiber. The scattered light serves as illumination light as it is. Furthermore, if the illumination light is decoded by a decoding unit after being received by a photoreceptor unit of a receiving set, then information carried by the illumination light can be received.

Display device and method for selecting optical film of display device

There is provided a display device exhibiting a good color reproducibility, even when observed through polarized sunglasses. A display device comprises a polarizer a and an optical film X on a surface on a light emitting surface side of a display element, wherein L1, which is the light incident vertically on the optical film X, among light incident on the optical film X from the display element side, satisfies a specific condition, and L2, which is the light emitting vertically from the light emitting surface side of the optical film X, and passing through a polarizer b having the absorption axis parallel to the absorption axis of the polarizer a, satisfies a specific condition.

Surface light source device with polarization function

Light is supplied into a light incident surface 2 from a fluorescent lamp L enclosed by a silver foil sheet R, and parallelized illuminating light flux is taken out from a light exit surface 3. On a back surface 4 side of a light flux parallelizer 1, across or without a thin air layer 5, a polarization converter Σ is disposed. The polarization converter Σ reinforces the polarization function of the surface light source device through polarization conversion action accompanying reflection in the prism. At a position confronting the light exit surface 3 across an air layer 7, a polarization separating plate 8 is disposed. At a further outside, across an air layer 9, an exit light direction modifier 10 is disposed. A bright polarized illuminating light flux is emitted from a light exit surface 11. When applied to a backlight of a liquid crystal display, a liquid crystal display panel is disposed at a further outside of the exit light direction modifier 10.

Refractive index distribution type light transmitting device

A refractive index distribution type light transmitting device comprising a non-crystalline polymer (a) and a metal chelate compound (b) having a difference in refractive index of at least 0.001 as compared with the non-crystalline polymer (a) and having a molecular weight of at least 400, wherein the metal chelate compound (b) is distributed in the non-crystalline polymer (a) with a concentration gradient in a specific direction.

Plastic optical fiber

A plastic optical fiber low in attenuation in a high order mode and small in mode dispersion, is presented. The plastic optical fiber comprises at least a core and a clad surrounding the core, characterized in that the core has a refractive index which gradually decreases from the core center towards the outside in the radial direction of the plastic optical fiber, and the refractive index of the clad is lower than the refractive index of the core center and higher than the refractive index of the core periphery.

Method For Evaluating Birefringence Of Adhesive, Method For Designing Adhesive, Method For Producing Adhesive, Adhesive, Polarizing Plate, Liquid Crystal Display Device, Method For Producing Polarizing Plate And Method For Producing Liquid Crystal Display Device

Methods of evaluating birefringence of an adhesive agent, and of designing and producing an adhesive agent using the evaluation method, as well as adhesive agents produced using these methods. A polarizing plate and a liquid crystal display device using the obtained adhesive agent are proposed, as well as methods for producing the same. 1. A method of evaluating birefringence of an adhesive agent comprising:{'sup': '−3', 'preparing a laminated film by applying an adhesive agent to a support body which comprises a polymer film whose inherent birefringence is 1×10or less;'}heat-drawing said laminated film; andmeasuring retardation of the laminated film after being heat-drawn and the layer-thickness of said adhesive agent.2. The method of evaluating birefringence according to claim 1 , wherein for said polymer film claim 1 , the photoelastic coefficient thereof is 1×10Paor less by the absolute value.3. The method of evaluating birefringence according to claim 1 , wherein said laminated film is a laminated film formed by sandwiching said adhesive agent between said two sheets of support bodies.4. The method of evaluating birefringence according to a claim 1 , wherein said heat-drawing is carried out under a glass-transition temperature or more of said polymer film.5. The method of evaluating birefringence according to claim 1 , wherein said heat-drawing is carried out under a condition of 70° C. to 150° C. drawing temperature claim 1 , 50%/min to 1000%/min drawing speed and draw ratio of 1.1 times to 3 times.6. A method of designing an adhesive agent comprising:{'sup': '−3', 'measuring birefringences of plural kinds of adhesive polymer compositions which include polymers and which are used for samples by for each adhesive polymer composition, preparing a laminated film by applying the adhesive agent to a support body which comprises a polymer film whose inherent birefringence is 1×10or less, heat-drawing said laminated film, and measuring retardation of the laminated ...

Gas Separation Membranes Based on Fluorinated and Perfluorinated Polymers

A process for separating components of a gas mixture using gas-separation copolymer membranes. These membranes use a selective layer made from copolymers of partially fluorinated or perfluorinated dioxolane monomers and a second monomer, such as dioxane or a partially fluorinated dioxolane. The resulting membranes have superior selectivity performance for gas pairs of interest while maintaining fast gas permeance compared to membranes prepared using conventional perfluoropolymers, such as Teflon® AF, Hyflon® AD, and Cytop®. 1. A process for separating two components , A and B , of a gas fluid mixture having a ratio (Rf) of A:B , comprising:(a) passing the gas mixture across a separation membrane having a feed side and a permeate side, the separation membrane having a selective layer comprising a copolymer comprising a perfluorinated dioxolane monomer and a perfluorinated dioxane monomer;(b) providing a driving force for transmembrane permeation;(c) withdrawing from the permeate side a permeate stream having a ratio (Rp) of A:B, where Rp>Rf; and(d) withdrawing from the feed side a residue stream having a ratio (Rr) of A:B, where Rr Подробнее

Display device and method for selecting optical film of display device

There is provided a display device exhibiting a good color reproducibility, even when observed through polarized sunglasses. A display device comprises a polarizer a and an optical film X on a surface on a light emitting surface side of a display element, wherein L1, which is the light incident vertically on the optical film X, among light incident on the optical film X from the display element side, satisfies a specific condition, and L2, which is the light emitting vertically from the light emitting surface side of the optical film X, and passing through a polarizer b having the absorption axis parallel to the absorption axis of the polarizer a, satisfies a specific condition.

Surface light source device and asymmetrical prism sheet

An asymmetric prism sheet, surface light source and LCD to which the asymmetric prism sheet is applied is provided. A cold cathode tube backed by a reflector supplies light to an incidence surface of a directional emission guide plate. A polarization separation sheet and a liquid crystal panel are disposed outside of the asymmetric prism sheet, with the reflector disposed along a back face. First and second slopes of each asymmetric prism element rows have inclination angles phia, phib which are selected as to allow a secondary ray to exist inside a main ray emitted from a frontal face in a manner such that the main ray is deflected toward a generally frontal direction by way of internal reflection of the second slope while the secondary ray is deflected toward a generally frontal direction by way of double internal reflection of the first and second slopes. An outer face provides an uneven face such as non-glare-processed face, orthogonal prismatic face or lens face. Outside of an outer ...

Non-birefringent optical resin material and optical member

Provided are an optical resin and an optical member using the same, both orientation birefringence and photoelasticity birefringence of the optical material being deadened and generally eliminated. The optical material consists of a composite constituent system of three or more constituents including a copolymerization system of monomer-element number not smaller than two, combination and constituent ratio of the composite constituent system being set so that both orientation birefringence and photoelasticity birefringence of the optical material are deadened at the same time and 5.0×105 or less is given under a condition that principal chains of the copolymerization system have degree of orientation equal to 0.03, and further a photoelasticity constant not greater than 1.0×1012 (Pa1) is obtained. The composite constituent system may contain an additive containing a low molecular weight compound which has an anisotropic polarizability and can be orientated in a polymer. The composite constituent ...

Graded-refractive-index optical plastic material and method for its production

A graded-refractive-index optical plastic material composed of an amorphous fluoropolymer and at least one material which differs from the polymer in refractive index by at least 0.001, wherein the material is so distributed as to have a concentration gradient in a specific direction, and a method for its production.

Graded-refractive-index optical plastic material and method for its production

A graded-refractive-index optical plastic material composed of an amorphous fluoropolymer and at least one material which differs from the polymer in refractive index by at least 0.001, wherein the material is so distributed as to have a concentration gradient in a specific direction, and a method for its production.

Light source device with uniformity in color temperature of emission

A light source device outputs illumination light with highly uniform tint. The light source device is comprises a scattering guide provided with scattering power inside, a light supplier to supply light to an end face portion of the scattering guide. Light is introduced into the scattering guide plate to be followed by emission from an emission face of the scattering guide. Scattering efficiency is intentionally balanced in a long wavelength region and in a short wavelength region so that regions near the end face and far from the end face are approximately equal in color temperature of output light. Relation between Q(R), efficiency in a long wavelength region, and Q(B), scattering efficiency in a short wavelength region, are designed so that k=Q(B)/Q(R) falls within a range 0.75<=k<=1.25.

Method for Producing Fluorinated Compounds and Polymers

A fluorinated polymer comprising a unit represented by the following formula (1), a method for producing fluorinated compounds and the fluorinated polymers, and an optical/electrical material or coating material comprising the fluorinated polymer.

WIRING BOARD AND METHOD FOR MANUFACTURING WIRING BOARD

An electrically conductive path is configured from a first copper plate, a second copper plate, and solder. The first copper plate has a first bent section extended from a first joining section joined to an electrically insulative board and bent toward the rear surface of the electrically insulative board. The second copper plate has a second bent section which is extended from a second joining section joined to the electrically insulative board, is bent toward the front surface of the electrically insulative board, and is disposed so as to cover, together with the first bent section, the inner wall surface of a base-material through-hole. Through-holes are provided in the portions of the second copper plate which face the inside of the base-material through-hole. Solder is filled between the first bent section and the second bent section. 1. A wiring board comprising:a base including a front surface, a rear surface, and a side surface;a first metal plate joined with the front surface;a second metal plate joined with the rear surface; anda conductive line configured to electrically connect the first metal plate and the second metal plate, wherein the conductive line is arranged in an inner space defined by an inner wall surface of a base through hole formed in the base or an outer space located at an outer side of the side surface of the base, and the conductive line includes the first metal plate, the second metal plate, and a conductive material electrically connecting the first metal plate and the second metal plate,wherein at least one of the first metal plate and the second metal plate includes a joined portion, which is joined with the base, and a bent portion, which is bent and extended from the joined portion to cover the inner wall surface or the side surface, andthe conductive material fills an inner side of the bent portion.2. The wiring board according to claim 1 , whereinthe first metal plate includes a first joined portion, which serves as the joined ...

Graded-refractive-index optical plastic material and method for its production

A graded-refractive-index optical plastic material composed of an amorphous fluoropolymer and at least one material which differs from the polymer in refractive index by at least 0.001, wherein the material is so distributed as to have a concentration gradient in a specific direction, and a method for its production.

OPTICAL FIBER CABLE

Provided is an optical fiber cable which allows for high-quality signal transmission in short-distance transmission. The optical fiber cable is designed for use in optical communication based on transmitting an optical beam from a light-emitting device, to a light-receiving device. The optical fiber cable has: a proximal end which is one end thereof on the side of the light-emitting device, and a distal end which is the other end thereof on the side of the light-receiving device, wherein an optical beam returning from the side of the distal end toward the side of the light-emitting device has an M2 factor of 1.7 or more; and a length of 50 m or less.

Active clamp DC-DC converter

An active clamp DC-DC converter includes a transformer having a primary coil and a secondary coil, a main switching device connected in series to the primary coil of the transformer so that the main switching device and the primary coil are connected in parallel to a DC power source, a reset capacitor, a reset switching device connected in series to the reset capacitor so that the reset switching device and the reset capacitor are connected in parallel to the primary coil of the transformer, a rectifying circuit connected to the secondary coil of the transformer, a smoothing circuit connected to the rectifying circuit, and a control circuit adjusting a dead time that elapses from the time when the reset switching device is turned off until the time when the main switching device is turned on, based on a voltage across the main switching device.

Inverter circuit device with temperature detection circuit

In order to enable overheat protection and overcurrent protection as well as temperature detection of an inverter circuit, an inverter circuit comprises a switching circuit 9 composed of a plurality of switching elements and a control circuit 1 for generating a control signal to be inputted into a drive circuit 2 to control a load, a temperature detecting element 12 for detecting a change in temperature of the inverter circuit is provided in a temperature detection circuit 10, and a temperature detection signal which changes according to a change in temperature of said inverter circuit, an overheat abnormal signal outputted upon a rise in temperature to a predetermined temperature or more, and an overcurrent abnormal signal outputted from an overcurrent protection FET 13 are outputted via one commonly used terminal.

Method of making hybrid integrated circuit device

In a molding process, a hybrid integrated circuit substrate is positionally fixed in a horizontal direction. By abutting the points, where particularly leads having a spacing kept constant continue with a first connection portion, against guide pins provided on a mold die, a hybrid integrated circuit substrate can be positionally fixed. Because the spacing between the particular leads is not relied upon the number of terminals of the hybrid integrated circuit substrate, the mold can be commonly used where the number of terminals is different.

Circuit device and method of manufacturing the same

Provided is a circuit device, in which circuit elements incorporated are electrically connected to each other via a lead so as to achieve both of the enhanced functionality and miniaturization. In a hybrid integrated circuit device, a first circuit board and a second circuit board are incorporated into a case member in a way that a first circuit board is overlaid with a second circuit board. A first circuit element is arranged on the upper face of the first circuit board and a second circuit element is arranged on the upper face of the second circuit board. Leads provided in the hybrid integrated circuit device include a lead connected only to the first circuit element mounted on the first circuit board, a lead connected only to the second circuit element mounted on the second circuit board, and a lead connected to both of the first circuit element and the second circuit element.

Illumination module

Provided is an illumination module capable of preventing a light exit surface from being darker along peripheral edge portions as though having borders. An illumination module (1) includes: a light guiding plate (20), which has an end surface (21) and a first principal surface (23); a light source (30) configured to emit light that enters the end surface (21); and a diffusion plate (50), which has alight incident surface (55) and a light exit surface (56). The diffusion plate (50) includes a protruding part (51), which protrudes toward the light guiding plate (20) side and the light source (30), which is positioned so as to face a peripheral edge portion (26) on the end surface (21) side of the light guiding plate (20), and which has a light incident surface (52) into which light exiting the peripheral edge portion (26) enters.

Hybrid integrated circuit device

In a molding process, a hybrid integrated circuit substrate is positionally fixed in a horizontal direction. By abutting the points, where particularly leads having a spacing kept constant continue with a first connection portion, against guide pins provided on a mold die, a hybrid integrated circuit substrate can be positionally fixed. Because the spacing between the particular leads is not relied upon the number of terminals of the hybrid integrated circuit substrate, the mold can be commonly used where the number of terminals is different.

Hybrid integrated circuit device and manufacturing method thereof

In a manufacturing method of a hybrid integrated circuit device of the invention, transfer molding is carried put by positioning a curved surface formed in a back surface of the substrate on a lower mold die side and a burr formed in a main surface of the substrate on an upper mold die side. This utilizes the curved surface to inject thermosetting resin in an arrow direction to pour the thermosetting resin through a below of the substrate. There are no broken fragments of burr in a thermosetting resin at the below of the substrate. As a result, a required minimum resin thickness is secured at the below of the substrate, thus realizing a hybrid integrated circuit device having a high voltage resistance, an excellent heat dissipation property and a high product quality.

Method for producing fluorinated compounds and polymers

A fluorinated polymer comprising a unit represented by the following formula (1), a method for producing fluorinated compounds and the fluorinated polymers, and an optical/electrical material or coating material comprising the fluorinated polymer.

ELECTRONIC DEVICE

An electronic device includes a shielding member, an electric circuit, and a filter capacitor. The electric circuit has an output line and is arranged inside the shielding member. The filter capacitor is arranged outside the shielding member to be connected to the output line.

Hybrid integrated circuit device and manufacturing method thereof

A method of manufacturing a hybrid integrated circuit device of the present invention includes the steps of preparing a lead frame which constituted by units each having a plurality of leads, and fixing a circuit substrate on each unit of the lead frame by fixing pads which are formed on the surface of the circuit substrate to the leads, where a space between a first pad which is formed at an end edge of the circuit substrate and a second pad which is adjacent to the first pad is set narrower than a space between the pads themselves.

Surface light emitting device and polarization light source

A surface light emitting device includes a polarized light source that emits polarized light; and a light guide plate including a light incident surface on which the polarized light emitted from the polarized light source is made incident, and a light emitting surface that emits light, the light guide plate being made of light transmissive resin having low birefringence in which retardation is one-fourth or less of a wavelength of the polarized light.

Surface light source device

A light incident into a wedge type light scattering conducting element from a light incident surface of the light scattering conducting element is converted into a light flux having a directionality and is output from a light output surface. The output light is input to a wedge type emitting direction characteristic adjusting element arranged with a positional relationship complementary to the light scattering conducting element. A prism shaped irregularity for adjusting a propagating directionality of the light in longitudinal/transverse directions is formed on a light input surface/light output surface of the wedge type emitting direction characteristic adjusting element. The wedge type emitting direction characteristic adjusting element has a weakened scattering power depending on requirements, thereby a degree of directionality sharpness of the light emitted from a surface light source device is adjusted. Various modifications are provided for the light scattering conducting elements ...

Illuminative light communication device

The present invention has been developed considering the above-described problems and aims to provide various structures and applications for illuminative light communication. According to the first aspect of the prevent invention, a broadcast system includes an LED light source 115 for lighting, a power line 103 that supplies electric power to the LED light source 115, a data modulator 102 that modulates and multiplexes a plurality of pieces of data, superimposes the resulting signal on an electric power waveform, and then transmits the resulting superimposed signal waveform to the power line 103, and a filter 112 that selectively separates one or more of a plurality of pieces of modulated data on the power line so as to control light intensity or blinking of the LED light source. Data is transmitted through changes in light intensity or blinking of the LED light source.

Method And Apparatus For Producing Plastic Optical Fiber

A producing apparatus for producing a plastic optical fiber (11), in which a refractive index is distributed in a direction toward a center of a diameter (D1, D2), is provided. A first collection block (58) causes first and second molten resins (22, 23, 84, 85) together to flow to form a first multi layer fluid resin (22, 23) in a concentric fiber shape. A second collection block (59, 60) causes a third molten resin (21, 24) to flow together with the first multi layer fluid resin to form a second multi layer fluid resin (21-24) in a concentric fiber shape, so as to produce the plastic optical fiber from at least three resins. Also, the three resins contain a dopant at densities different from one another. Furthermore, a first diffusion tube (61) diffuses the dopant in the first multi layer fluid resin. A second diffusion tube (62, 63) diffuses the dopant in the second multi layer fluid resin.

Non-Birefringent Optical Resin Material and Optical Member

Provided are an optical resin and an optical member using the same, both orientation birefringence and photoelasticity birefringence of the optical material being deadened and generally eliminated. The optical material consists of a composite constituent system of three or more constituents including a copolymerization system of monomer-element number not smaller than two, combination and constituent ratio of the composite constituent system being set so that both orientation birefringence and photoelasticity birefringence of the optical material are deadened at the same time and 5.0×10−5 or less is given under a condition that principal chains of the copolymerization system have degree of orientation equal to 0.03, and further a photoelasticity constant not greater than 1.0×10−12 (Pa−1) is obtained. The composite constituent system may contain an additive containing a low molecular weight compound which has an anisotropic polarizability and can be orientated in a polymer. The composite ...

Image display device

The present invention aims to provide an image display device including an optical film having a thickness suitable for practical use without including any special inorganic material, wherein the image display device has high color rendering properties and is capable of minimizing the occurrence of blackout and interference colors (rainbow unevenness) even when the image display device includes light sources that emit light having a narrow emission spectrum. The present invention provides an image display device including an optical film having an in-plane birefringence and a polarizer in this order, wherein the optical film and the polarizer are disposed to form an angle of about 45° between a slow axis of the optical film and an absorption axis of the polarizer, the optical film has a retardation of 3000 nm or more, and light incident on the optical film provides at least 50% coverage of ITU-R BT.2020.

Optical transmission system and electro-optical conversion device

An optical transmission system transmits a Radio Frequency (RF) signal by a frequency division multiplexing method. The optical transmission system includes a Transmitter Optical SubAssembly (TOSA), an optical fiber, and a Receiver Optical SubAssembly (ROSA). The TOSA includes a surface emitting laser diode configured to be capable of emitting light at output of 0.8 mW or more. In the optical transmission system including the surface emitting laser diode, a noise index obtained by a measurement method including a predetermined step is 10.0 dBμV or less.

Optical transmitter-receiver

An optical transmitter-receiver that does not have a harmful effect on the human eye when an optical fiber is disconnected from the apparatus and is able to determine easily when the fiber has been reconnected. A normal signal detector and a dummy signal detector determine when a signal from another optical transmitter-receiver is no longer received due to disconnection of an optical fiber. This result switches an output switch and causes a second reference voltage to be transmitted to an optical output automatic controller, thereby reducing the power of a laser diode. At the same time, a signal switch provides a dummy signal having a low frequency to the laser diode in place of the normal signal, resulting in output of a dummy optical signal. At this time, the other optical transmitter-receiver also outputs a dummy optical signal. When the optical fiber is reconnected, the dummy signal transmitted from the other optical transmitter-receiver is detected. Upon detection, the output of the ...

Non-birefringent optical resin material and its producing method

A non-birefringent optical resin material is composed of a resin material and inorganic fine particle material birefringence sign of which are the same. A molten resin material, which contains an inorganic fine particle material, dispersed therein, of the same birefringence sign as that of the resin material, is caused to flow into a mold 4 through a gate 5. The molten material flows as to expand radially. Velocity vector of the flow has normal components P, R in addition to straight-ahead component S. Bonding chains of the resin material are generally orientated to the direction of velocity vector. In the vicinity of points A, B on an equiphase face 7, bonding chains of the resin material are generally orientated to lines extending from the exit of the gate 5 to point A and B, respectively. Flowing velocity has a gradient around each fine particle, causing the fine particle to be influenced by a moment and to tend to orientate so that the major axis of the particle is directed approximately ...

Light scattering guiding light source device and liquid crystal display

A light scattering guiding light source device with a good directionality, having a simplified construction and usable for a backlight source of a liquid crystal display device and the like. A fluorescent lamp is arranged on one lateral surface side of a wedge shaped light scattering guide of an emitting directionality. A light emitting direction correcting element having a line shaped prism face is disposed on a light output surface side of the light scattering guide. A surface light source device using a flat surface of the light emitting direction correcting element as a brightened light can be obtained. Any particular treatment for producing an intensive light scattering such as a light dispersing ink pattern or an irregular diffusing surface or the like, is not provided on a back surface of the light scattering guide. A silver foil sheet is arranged opposing the back surface as a reflection portion having a regular reflection property. Thereby, a light which is emitted along the light ...

SURFACE LIGHT EMITTING DEVICE AND POLARIZATION LIGHT SOURCE

A surface light emitting device includes a polarized light source that emits polarized light; and a light guide plate including a light incident surface on which the polarized light emitted from the polarized light source is made incident, and a light emitting surface that emits light, the light guide plate being made of light transmissive resin having low birefringence in which retardation is one-fourth or less of a wavelength of the polarized light.

Wiring board and method for manufacturing wiring board

An electrically conductive path is configured from a first copper plate, a second copper plate, and solder. The first copper plate has a first bent section extended from a first joining section joined to an electrically insulative board and bent toward the rear surface of the electrically insulative board. The second copper plate has a second bent section which is extended from a second joining section joined to the electrically insulative board, is bent toward the front surface of the electrically insulative board, and is disposed so as to cover, together with the first bent section, the inner wall surface of a base-material through-hole. Through-holes are provided in the portions of the second copper plate which face the inside of the base-material through-hole. Solder is filled between the first bent section and the second bent section.

GAS SEPARATION MEMBRANES BASED ON PERFLUORINATED POLYMERS

Disclosed herein is a process for separating components of a gas mixture using gas-separation copolymer membranes. These membranes use a selective layer made from copolymers of perfluorodioxolane monomers. The resulting membranes have superior selectivity performance for gas pairs of interest while maintaining fast gas permeance compared to membranes prepared using conventional perfluoropolymers, such as Teflon® AF, Hyflon® AD, and Cytop®.

CIRCUIT DEVICE AND METHOD OF MANUFACTURING THE SAME

Provided is a circuit device that allows a plurality of circuit boards, which are stacked each other and arranged in a case member, to be sealed with a resin effectively, and a method of manufacturing the same. In a hybrid integrated circuit device, a first circuit board is overlaid with the second circuit board and both of the boards are fitted into the case member. A first circuit element is arranged on the upper surface of the first circuit board and a second circuit element is arranged on the upper surface of the second circuit board. Furthermore, an opening is provided in a side wall part of the case member, and an internal space of the case member communicates with the outside through this opening. Accordingly, in the resin sealing step, a sealing resin can be injected into the internal space of the case member from the outside through this opening.

Method for improving visibility of liquid crystal display device, and liquid crystal display device using the same

The present invention provides a liquid crystal display method capable of, when a screen thereof is observed through a polarizer such as sunglasses, ensuring an excellent visibility regardless of the angle of observation. In a liquid crystal display device at least having a backlight light source, a liquid crystal cell, and a polarizer disposed on a viewing side of the liquid crystal cell, a white light-emitting diode is used as the backlight light source; and a polymer film having a retardation of from 3,000 nm to 30,000 nm is used so as to be disposed on the viewing side of the polarizer so that an angle between an absorption axis of the polarizer and a slow axis of the polymer film becomes about 45 degrees.

Method for improving visibility of liquid crystal display device, and liquid crystal display device using same

The present invention provides a liquid crystal display method capable of, when a screen thereof is observed through a polarizer such as sunglasses, ensuring an excellent visibility regardless of the angle of observation. In a liquid crystal display device at least having a backlight light source, a liquid crystal cell, and a polarizer disposed on a viewing side of the liquid crystal cell, a white light-emitting diode is used as the backlight light source; and a polymer film having a retardation of from 3,000 nm to 30,000 nm is used so as to be disposed on the viewing side of the polarizer so that an angle between an absorption axis of the polarizer and a slow axis of the polymer film becomes about 45 degrees.

CIRCUIT DEVICE AND METHOD OF MANUFACTURING THE SAME

Provided is a circuit device, in which circuit elements incorporated are electrically connected to each other via a lead so as to achieve both of the enhanced functionality and miniaturization. In a hybrid integrated circuit device, a first circuit board and a second circuit board are incorporated into a case member in a way that a first circuit board is overlaid with a second circuit board. A first circuit element is arranged on the upper face of the first circuit board and a second circuit element is arranged on the upper face of the second circuit board. Leads provided in the hybrid integrated circuit device include a lead connected only to the first circuit element mounted on the first circuit board, a lead connected only to the second circuit element mounted on the second circuit board, and a lead connected to both of the first circuit element and the second circuit element.

Electromagnetic induction type charging device

An electromagnetic induction type charging device for charging a battery device has a charging paddle and a receptacle. The charging paddle has an infrared communication apparatus for communicating between the paddle and the receptacle. The housing of the charging paddle is made of a material that transmits infrared waves.

Inverted circuit overcurrent protection device and hybrid integrated circuit device with the same incorporated

An inverter circuit overcurrent protection device in which an overcurrent detection resistor (Rs) is incorporated in a hybrid integrated circuit, in which a detection voltage from the overcurrent detection resistor (Rs) is divided by voltage dividing resistors (R 1 and R 2 ) and is compared with a reference voltage in an overcurrent detection circuit, for carrying out an overcurrent protection, and an external resistor is connected in series or in parallel with one of the voltage dividing resistors (R 1 and R 2 ) to change a division ratio so that the level of overcurrent protection can be adjusted; and an embodiment wherein, in the vicinity of a current detection terminal, a first pad (P 1 ) is connected to a detection voltage from the overcurrent detection resistance, a second pad (P 2 ) is connected to a detection voltage from the amplifier, and a third pad (P 3 ) is connected to the voltage dividing resistors, and a bonding wire ( 10 ) is connected between the current detection terminal one of said pads, to select one of a plurality of overcurrent protection devices.

Charger coupling

A charger coupling for charging a battery includes a paddle and a receptacle. The paddle and the receptacle exchange information by radio waves. The paddle includes waveguides for guiding radio waves between an antenna of the paddle and an antenna or the receptacle. The waveguides improve the radio communication between the paddle and the receptacle.

GI TYPE OPTICAL FIBER AND METHOD FOR MANUFACTURING SAME

A GI type optical fiber of the present invention is a GI type optical fiber having a core component and a cladding component disposed around the outer periphery of the core component, the core component includes a polymer containing at least 55 wt % chlorostyrene monomer and a dopant, and the cladding component includes a polymer of a monomer containing at least 35 wt % methyl methacrylate. It is an object of the present invention to provide a GI type optical fiber in which chlorostyrene is used as the predominant component of the monomer that constitutes the core component, and therefore has excellent transparency and good flexibility, and allows high-speed communication.

Magnetic core and induction device

A magnetic core includes a first core having a recess and a second core, which has a first end portion and a second end portion both held in contact with the first core and forms a closed magnetic path with the first core. The second core is formed of material having a lower magnetic permeability and a higher saturation magnetic flux density than those of the first core. The second end portion includes a distal surface having an area larger than the cross-sectional area of the first end portion in a direction perpendicular to the direction in which a magnetic flux flows in the closed magnetic path. The distal surface of the second end portion is held in contact with the first core and the first end portion is engaged with the recess in the first core.

Control device for voltage conversion device, vehicle incorporating the same, and control method for voltage conversion device

In a voltage conversion device of a motor drive control device, switching-control is performed so as to enlarge an output allowable voltage range of the voltage conversion device restricted by a dead time in a switching operation for an upper arm and a lower arm performing power conversion by a switching operation. Accordingly, restriction in the output voltage from the voltage conversion device, caused by the dead time, can be suppressed.

Fluorinated polymers, method for producing the fluorinated compounds and polymers

A fluorinated polymer comprising an unit represented by the following formula (1), a methods for producing fluorinated compounds and the fluorinated polymers, and an optical/electrical material or coating material comprising the fluorinated polymer.

Circuit device

Provided is a circuit device capable of increasing the packaging density and preventing the thermal interference between circuit elements to be incorporated. In a hybrid integrated circuit device, a first circuit board and a second circuit board are fitted into a case member in a way that the first circuit board is overlaid with the second circuit board. A first circuit element is arranged on the upper surface of the first circuit board and a second circuit element is arranged on the upper surface of the second circuit board. Furthermore, inside the case member, provided is a hollow portion that is not filled with a sealing resin. Such a configuration prevents the second circuit element, which is a microcomputer, from operating unstably due to a heat generated in the first circuit element, which is a power transistor, for example.

Plastic optical fiber

A plastic optical fiber low in attenuation in a high order mode and small in mode dispersion, is presented. The plastic optical fiber comprises at least a core and a clad surrounding the core, characterized in that the core has a refractive index which gradually decreases from the core center towards the outside in the radial direction of the plastic optical fiber, and the refractive index of the clad is lower than the refractive index of the core center and higher than the refractive index of the core periphery.

Integrally molded multi-optical transmission sheet, integrally molded multi-optical transmission sheet connector and method for manufacturing the same

An integrally molded multi-optical transmission sheet includes: a sheet-like coated portion formed of plastic; and a plurality of optical transmission regions having a core region formed of plastic, and a clad region formed of plastic and surrounding an outer periphery of the core region, which are provided inside the coated portion to extend along an extending direction of the coated portion, wherein the plurality of optical transmission regions are arranged in a row substantially parallel to each other along a main surface of the coated portion, and in a case where light is incident from one end face side of the plurality of optical transmission regions and transmitted toward the other end face side, a M2value of emitted light is 1.7 or more.

Graded-refractive-index optical plastic material and method for its production

A graded-refractive-index optical plastic material composed of an amorphous fluoropolymer and at least one material which differs from the polymer in refractive index by at least 0.001, wherein the material is so distributed as to have a concentration gradient in a specific direction, and a method for its production.

Gas separation membranes based on fluorinated and perfluorinated polymers

A process for separating components of a gas mixture using gas-separation copolymer membranes. These membranes use a selective layer made from copolymers of partially fluorinated or perfluorinated dioxolane monomers and a second monomer, such as dioxane or a partially fluorinated dioxolane. The resulting membranes have superior selectivity performance for gas pairs of interest while maintaining fast gas permeance compared to membranes prepared using conventional perfluoropolymers, such as Teflon® AF, Hyflon® AD, and Cytop®.

HYBRID INTEGRATED CIRCUIT DEVICE AND METHOD OF MANUFACTURING THE SAME

A method of manufacturing a hybrid integrated circuit device of the present invention includes the steps of preparing a lead frame which constituted by units each having a plurality of leads, and fixing a circuit substrate on each unit of the lead frame by fixing pads which are formed on the surface of the circuit substrate to the leads, where a space between a first pad which is formed at an end edge of the circuit substrate and a second pad which is adjacent to the first pad is set narrower than a space between the pads themselves.

Optical Film

Disclosed is an optical film having low wavelength dispersibility which is obtained by stretching a film formed of a fluorine-containing cyclic olefin polymer including at least one selected from a repeating structural unit represented by the formula described below, wherein a phase difference at a wavelength of 550 nm is greater than or equal to 50 nm, wavelength dispersibility represented by a ratio Re (400 nm)/Re (550 nm) of a phase difference Re (400 nm) at a wavelength of 400 nm to a phase difference Re (550 nm) at a wavelength of 550 nm is 1.00 to 1.05, wavelength dispersibility represented by a ratio Re (400 nm)/Re (800 nm) of a phase difference Re (400 nm) at a wavelength of 400 nm to a phase difference Re (800 nm) at a wavelength of 800 nm is 1.00 to 1.05, and total light transmittance is greater than or equal to 92%. 2. The optical film according to claim 1 ,wherein the optical film is a λ/4 wavelength plate or a λ/2 wavelength plate.3. The optical film according to claim 2 , obtained by subjecting a varnish of the fluorine-containing cyclic olefin polymer to fine filtration by passing the varnish through a filter including a hole having a hole diameter of less than or equal to 0.5 μm and subsequently forming a film claim 2 , wherein the optical film is a λ/4 wavelength plate or a λ/2 wavelength plate.4. The optical film according to claim 3 ,wherein in the λ/4 wavelength plate, a phase difference at a wavelength of 550 nm is 140±10 nm.5. The optical film according to claim 3 ,wherein in the λ/2 wavelength plate, a phase difference at a wavelength of 550 nm is 280±20 nm.6. The optical film according to claim 3 ,{'sup': '2', 'wherein in the λ/4 wavelength plate and the λ/2 wavelength plate, phase difference unevenness at a wavelength of 550 nm is less than or equal to ±0.50 nm/cm.'}7. The optical film according to claim 3 ,wherein in the λ/4 wavelength plate and the λ/2 wavelength plate, reflectance at a wavelength of 550 nm is less than or equal to 7.0%.8. ...

Circuit device, circuit module, and outdoor unit

Provided is a circuit device capable of increasing the packaging density and also suppressing the thermal interference between incorporated circuit elements. In a hybrid integrated circuit device, a first circuit board and a second circuit board are incorporated into a case member being arranged in a way that the first circuit board is overlaid with the second circuit board. A first circuit element is arranged on the upper face of the first circuit board and a second circuit element is arranged on the upper face of the second circuit board. In addition, inside the case member, a hollow portion (internal space) which is not filled with a sealing resin is provided, and this hollow portion communicates with the outside through a communicating opening, which is provided by partially opening the case member.

Gas separation membranes based on perfluorinated polymers

Disclosed herein is a process for separating components of a gas mixture using gas-separation copolymer membranes. These membranes use a selective layer made from copolymers of perfluorodioxolane monomers. The resulting membranes have superior selectivity performance for gas pairs of interest while maintaining fast gas permeance compared to membranes prepared using conventional perfluoropolymers, such as Teflon® AF, Hyflon® AD, and Cytop®.

Optical collimator and optical connector using same

In order to fix an optical fiber to a desired position in a holding member easily and tightly, provided is an optical collimator ( 10 ) having a plastic optical fiber ( 13 ) and a cylindrical holder ( 11 ). The holder ( 11 ) is configured to hold a collimator lens ( 12 ) at an end and has an insertion hole ( 11 a ) at an opposite end for inserting the plastic optical fiber ( 13 ). The plastic optical fiber ( 13 ) is sandwiched by an inner surface of a recess ( 11 e ) which is formed at a part of the holder ( 11 ) in proper alignment with the collimator lens ( 12 ).

OPTICAL FIBER AND METHOD FOR MANUFACTURING SAME

[Object] The present invention has the object of providing an optical fiber enabling high-speed communication, that exhibits superior transparency and excellent flexibility, and that includes trichloroethyl methacrylate as a main component of the core portion monomer. 19-. (canceled)10. An optical fiber configured from a core portion and a cladding portion disposed on an outer periphery of the core portion ,wherein the core portion is formed by a main constituent component of a polymer of monomers that include at least 70 wt % of trichloroethyl methacrylate (TCEMA),the cladding portion is formed by a main constituent component of a polymer of monomers which include at least 20 wt % of methyl methacrylate (MMA).11. An optical fiber according to claim 10 , whereinthe core portion is formed by a main constituent component of a polymer of structural units that are derived from TCEMA and at least one monomer selecting from the group consisting of methyl methacrylate (MMA), methyl acrylate (MA), N-cyclohexyl maleimide (N-cHMI), cyclohexyl acrylate (cHA), trichloroethyl acrylate (TCEA), isobornyl acrylate (iBoA) and cyclohexyl methacrylate (cHMA).12. An optical fiber according to claim 10 , whereinthe cladding portion is formed by a main constituent component of a polymer of structural units that are derived from MMA and at least one monomer selecting from the group consisting of TCEMA, MA, N-cHMI, cHA, TCEA, iBoA and cHMA.13. An optical fiber configured from a core portion and a cladding portion disposed on an outer periphery of the core portion claim 10 ,wherein the core portion is formed by a main constituent component of a polymer of monomers that include at least 70 wt % of trichloroethyl methacrylate (TCEMA),an outer periphery of the cladding portion is covered by a plastic having a main component of polycarbonate.14. An optical fiber according to claim 13 , whereinthe core portion is formed by a main constituent component of a polymer of structural units that are ...

WIRING BOARD

This wiring board is provided with an insulating core substrate, a first conductor pattern, a second conductor pattern, and a conductive material. The first conductor pattern and the second conductor pattern are adhered to the insulating core substrate. The second conductor pattern has a first surface and a second surface. The second conductor pattern has a concavity and a through-hole. The opening of the concavity that opens to the first surface and the opening of the through hole that opens to the first surface are interconnected to each other. The first conductor pattern is positioned at the opening of the concavity. The first conductor pattern and the second conductor pattern are electrically connected by means of the conductive material, which fills from the opening of the through hole that opens to the second surface. 17-. (canceled)8. A wiring board comprising:an insulative core substrate;a patterned first conductive pattern adhered to the insulative core substrate;a patterned second conductive pattern adhered to the insulative core substrate, wherein the second conductive pattern and the first conductive pattern are adhered to the same surface of the insulative core substrate, the second conductive pattern includes a first surface that faces toward the insulative core substrate and a second surface that is opposite to the first surface, the second conductive pattern includes a recess that opens in the first surface and a through hole that extends from the first surface to the second surface, and an opening of the recess that opens in the first surface and an opening of the through hole that opens in the first surface are in communication with each other; anda conductive material that electrically connects the first conductive pattern and the second conductive pattern to each other, whereinthe first conductive pattern is thinner than the second conductive pattern and has a current line with a smaller cross-sectional area than that of the second conductive ...

METHOD FOR IMPROVING VISIBILITY OF LIQUID CRYSTAL DISPLAY DEVICE, AND LIQUID CRYSTAL DISPLAY DEVICE USING SAME

The present invention provides a liquid crystal display method capable of when a screen thereof is observed through a polarizer such as sunglasses, ensuring an excellent visibility regardless of the angle of observation. In a liquid crystal display device at least having a backlight light source, a liquid crystal cell, and a polarizer disposed on a viewing side of the liquid crystal cell, a white light-emitting diode is used as the backlight light source; and a polymer film having a retardation of from 3,000 nm to 30,000 nm is used so as to be disposed on the viewing side of the polarizer so that an angle between an absorption axis of the polarizer and a slow axis of the polymer film becomes about 45 degrees. 1. A method for improving a visibility of a liquid crystal display device at least comprising a backlight light source , a liquid crystal cell , and a polarizer disposed on a viewing side of the liquid crystal cell , which method comprises:using a white light-emitting diode as the backlight light source; andusing a polymer film having a retardation of from 3,000 nm to 30,000 nm, which polymer film is disposed on the viewing side of the polarizer so that an angle between an absorption axis of the polarizer and a slow axis of the polymer film becomes about 45 degrees.2. The method for improving a visibility of a liquid crystal display device according to claim 1 , wherein the white light-emitting diode is a light-emitting device comprising a combination of an yttrium-aluminum-garnet yellow phosphor with a blue light-emitting diode using a compound semiconductor.3. The method for improving a visibility of a liquid crystal display device according to claim 1 , wherein the polymer film is an oriented polycarbonate film.4. The method for improving a visibility of a liquid crystal display device according to claim 1 , wherein the polymer film is an oriented polyester film.5. A liquid crystal display device using a method for improving a visibility according to .6. A ...

Connector

When a moving member moves to a fixing position, a fixing member moves to a second fixing position, a blade of the fixing member cuts into a protection layer of a cord, and thereby the cord is fixed. When the moving member moves to a releasing position, the fixing member moves to a second releasing position, the blade leaves the protection layer, and thereby the cord is released.

Process for producing plastic optical member and plastic optical member obtained by said process

A process for producing a plastic optical member is provided that includes injecting a polymerizable monomer composition into a hollow plastic tube and polymerizing the composition within the hollow tube, wherein prior to injecting the composition one end of the hollow tube is sealed with a resin. The resin may have a composition different from that of the plastic forming the hollow tube. A process for producing a plastic optical fiber base material is also provided that includes injecting a polymerizable monomer composition into a hollow plastic tube and polymerizing the composition within the hollow tube, wherein prior to injecting the composition one end of the hollow tube is sealed with a resin. Furthermore, a process for producing a plastic optical fiber is provided that includes drawing the plastic optical fiber base material obtained by the above process. Moreover, also provided are a plastic optical member and a plastic optical fiber, which are produced by the above processes.

Circuit device

Provided is a circuit device capable of increasing the packaging density and preventing the thermal interference between circuit elements to be incorporated. In a hybrid integrated circuit device, a first circuit board and a second circuit board are fitted into a case member in a way that the first circuit board is overlaid with the second circuit board. A first circuit element is arranged on the upper surface of the first circuit board and a second circuit element is arranged on the upper surface of the second circuit board. Furthermore, inside the case member, provided is a hollow portion that is not filled with a sealing resin. Such a configuration prevents the second circuit element, which is a microcomputer, from operating unstably due to a heat generated in the first circuit element, which is a power transistor, for example.

ACTIVE CLAMP DC-DC CONVERTER

An active clamp DC-DC converter includes a transformer having a primary coil and a secondary coil, a main switching device connected in series to the primary coil of the transformer so that the main switching device and the primary coil are connected in parallel to a DC power source, a reset capacitor, a reset switching device connected in series to the reset capacitor so that the reset switching device and the reset capacitor are connected in parallel to the primary coil of the transformer, a rectifying circuit connected to the secondary coil of the transformer, a smoothing circuit connected to the rectifying circuit, and a control circuit adjusting a dead time that elapses from the time when the reset switching device is turned off until the time when the main switching device is turned on, based on a voltage across the main switching device. 1. An active clamp DC-DC converter , comprising:a transformer having a primary coil and a secondary coil;a main switching device connected in series to the primary coil of the transformer, the main switching device and the primary coil being connected in parallel to a DC power source;a reset capacitor;a reset switching device connected in series to the reset capacitor, the reset switching device and the reset capacitor being connected in parallel to the primary coil of the transformer;a rectifying circuit connected to the secondary coil of the transformer;a smoothing circuit connected to the rectifying circuit; anda control circuit turning off the reset switching device while the main switching device is on, and turning on the reset switching device while the main switching device is off, the control circuit controlling duty of a drive signal for driving the main switching device thereby to keep an output DC voltage from the smoothing circuit constant,wherein the control circuit adjusts a dead time that elapses from the time when the reset switching device is turned off until the time when the main switching device is turned ...

MULTIMODE GRADED-INDEX PLASTIC OPTICAL FIBER AND METHOD FOR PRODUCING THE SAME

A multimode graded-index plastic optical fiber comprises a cladding and a core. The core has a refractive index which continuously becomes higher as closer to a center of a circular cross-section of the core. The core propagates light of a first mode group, which should be propagated, of incoming light from one end face of the core and emits the light from the other end face of the core. The cladding is provided on a periphery of the core and has a cylindrical cross-section. The cladding has a refractive index which is lower than that of the core. The cladding deflects light of the first mode group at an interface with the core. The core has a first core section, a second core section and a third core section. The first core section contacts an inner circumference of the cladding. The second core section is inside the first core section, and is inside the core. The second core section is a light scattering section which scatters light of a second mode group of the incoming light outside. The second mode group is of a higher order than the first mode group. 1. A multimode graded-index plastic optical fiber comprising:a core whose refractive index continuously becomes higher as closer to a center of a circular cross-section of said core, said core propagating light of a first mode group, which should be propagated, of incoming light from one end face of said core and emitting said light from the other end face of said core;a cladding which is provided on a periphery of said core and has a cylindrical cross-section, said cladding having a refractive index which is lower than that of said core and deflecting light of said first mode group at an interface with said core; anda light scattering section which scatters light of a second mode group of said incoming light outside, said second mode group being of a higher order than said first mode group, and said light scattering section being inside said core.2. A multimode graded-index plastic optical fiber claimed in claim ...

INDUCTION DEVICE

An induction device includes a casing, a coil retainer, a coil that is disposed in the casing and retained to the coil retainer and a core that is disposed in the casing. The coil extends spirally around the core. The core and the coil retainer are fixed to the casing separately. 1. An induction device comprising:a casing;a coil retainer;a coil disposed in the casing and retained to the coil retainer; anda core disposed in the casing, wherein the coil extends spirally around the core, wherein the core and the coil retainer are fixed to the casing separately.2. The induction device according to claim 1 , wherein the coil retainer is an insulating substrate and the coil is held at least on either one of surfaces of the insulating substrate.3. The induction device according to claim 1 , further comprising:a heat-conducting member interposed between the coil and the core.4. The induction device according to claim 1 , further comprising:a heat-conducting member interposed between the coil and the casing.5. The induction device according to claim 3 , wherein the heat-conducting member is made of a heat radiating sheet.6. The induction device according to claim 1 , wherein the coil and the coil retainer are formed integrally.7. The induction device according to claim 1 , further comprising a cover claim 1 , wherein the casing further including:an opening provided in top of the casing;a projection provided on bottom of the casing so as to extend upward; anda support member provided on the bottom of the casing, wherein the core is provided on the bottom of the casing and positioned by the projection, wherein the cover is fixed to the casing so as to close the opening and urge the core downward so that the core is held in the casing, wherein the coil retainer is fixed to the support member.8. The induction device according to claim 1 , wherein the coil is made of a copper plate.9. The induction device according to claim 1 , wherein resin forms a part of the coil retainer. The ...

INDUCTION DEVICE

An induction device includes a first core made of a ferrite material, a second core made of a material having a lower magnetic permeability than the ferrite material and a higher saturation magnetic flux density than the ferrite material, a cooling device and a coil. The first core and the second core cooperate to form a closed magnetic circuit. The first core includes a contact surface cooled by the cooling device and a first magnetic leg extending so as to intersect with the contact surface and toward the second core. The second core includes a second magnetic leg extending so as to intersect with the contact surface and toward the first core and disposed to be wound around by the coil. 1. An induction device comprising:a first core made of a ferrite material;a second core made of a material having a lower magnetic permeability than the ferrite material and a higher saturation magnetic flux density than the ferrite material, wherein the first core and the second core cooperate to form a closed magnetic circuit,a cooling device; and a contact surface cooled by the cooling device; and', 'a first magnetic leg extending so as to intersect with the contact surface and toward the second core, wherein the second core includes', 'a second magnetic leg extending so as to intersect with the contact surface and toward the first core and disposed to be wound around by the coil., 'a coil, wherein the first core includes'}2. The induction device according to claim 1 , wherein any cross-sectional area of the first magnetic leg of the first core as taken perpendicularly to a direction of magnetic flux in the closed magnetic circuit is larger than that of the second magnetic leg of the second core as taken perpendicularly to the direction of magnetic flux in the closed magnetic circuit.3. The induction device according to claim 1 , wherein each of the first core and the second core is of an L type core having a single magnetic leg.4. The induction device according to claim 1 , ...

MAGNETIC CORE AND INDUCTION DEVICE

A magnetic core includes a first core having a recess and a second core, which has a first end portion and a second end portion both held in contact with the first core and forms a closed magnetic path with the first core. The second core is formed of material having a lower magnetic permeability and a higher saturation magnetic flux density than those of the first core. The second end portion includes a distal surface having an area larger than the cross-sectional area of the first end portion in a direction perpendicular to the direction in which a magnetic flux flows in the closed magnetic path. The distal surface of the second end portion is held in contact with the first core and the first end portion is engaged with the recess in the first core. 1. A magnetic core comprising:a first core having a recess; anda second core having a first end portion and a second end portion both held in contact with the first core, the second core forming a closed magnetic path with the first core, whereinthe second core is formed of a material having a lower magnetic permeability and a higher saturation magnetic flux density than those of the first core,the second end portion includes a distal surface having an area larger than the cross-sectional area of the first end portion in a direction perpendicular to a direction in which a magnetic flux flows in the closed magnetic path, andthe distal surface of the second end portion is held in contact with the first core, and the first end portion is engaged with the recess in the first core.2. The magnetic core according to claim 1 , wherein the second core includes:a first core member having the first end portion and a third end portion located opposite to the first end portion; anda second core member that is formed by a component independent from the first core member, has the second end portion, and is held in contact with the third end portion of the first core member.3. The magnetic core according to claim 2 , wherein the ...

BRAKE CONTROL DEVICE FOR VEHICLE

A brake control device for a vehicle includes: a hydraulic brake device including a master cylinder, a wheel cylinder, a differential pressure control valve, and a pump; and a differential pressure control unit that operates the pump and transmits a differential pressure instructing output to the differential pressure control valve to perform a differential pressure control such that a differential pressure is generated; wherein the differential pressure control unit includes a correcting unit, wherein the correcting unit calculates a differential pressure instructing correction amount, based on an increased amount of the differential pressure which is generated by the differential pressure control valve when the increased amount of the differential pressure during the differential pressure control and then corrects the differential pressure instructing output based on the differential pressure instructing correction amount such that the differential pressure instructing output becomes larger than the increased amount of the differential pressure. 1. A brake control device for a vehicle comprising: a master cylinder which generates a brake fluid pressure according to a brake operation amount of a brake operating member by a driver;', 'wheel cylinders which are connected to the master cylinder by main pipe line and which generates a braking force according to the generate fluid pressure;', 'a differential pressure control valve which is disposed in the main pipe line and which generates a differential pressure corresponding to a fluid pressure difference between the master cylinder and the wheel cylinders, and', 'a pump which sucks the brake fluid from a portion of the main pipe line between the differential pressure control valve and the master cylinder and which discharges the brake fluid to a portion of the main pipe line between the differential pressure control valve and the wheel cylinder for increasing the brake fluid pressures of the wheel cylinders; and, 'a ...

VEHICLE BRAKING CONTROL DEVICE

Taking a stroke within a period from when an operation of a brake operating member is started to when a predetermined stroke operation is performed as an ineffective stroke in which the master cylinder pressure is not generated, a control means controls an amount of differential pressure formed by a differential control valve such that a hydraulic braking force that corresponds to a stroke of the brake operating member is generated during the ineffective stroke, and even after the stroke of the brake operating member exceeds the ineffective stroke, increases the wheel cylinder pressure by performing raising of the amount of differential pressure formed by the differential pressure control valve by a predetermined raising amount with respect to the amount of differential pressure during the ineffective stroke. 1. A vehicle braking control device that generates a target braking force corresponding to an operation amount of a brake operating member , comprising:a master cylinder that generates a master cylinder pressure based on an operation of the brake operating member by a driver;a wheel cylinder to which a wheel cylinder pressure that is based on the master cylinder pressure is applied and which thereby generates a hydraulic braking force for each of wheels; 'control means that instructs the differential pressure that the differential pressure control valve forms, wherein', 'brake fluid pressure increasing means that increases the wheel cylinder pressure such that the wheel cylinder pressure is higher than the master cylinder pressure, the brake fluid pressure increasing means including: a differential pressure control valve that forms a differential pressure between the master cylinder pressure and the wheel cylinder pressure; a pump that sucks out brake fluid in the master cylinder in a state in which the differential pressure is provided by the differential pressure control valve, and increases the wheel cylinder pressure by discharging the brake fluid toward ...

Display device and method for selecting optical film of display device

There is provided a display device exhibiting a good color reproducibility, even when observed through polarized sunglasses. A display device comprises a polarizer a and an optical film X on a surface on a light emitting surface side of a display element, wherein L1, which is the light incident vertically on the optical film X, among light incident on the optical film X from the display element side, satisfies a specific condition, and L2, which is the light emitting vertically from the light emitting surface side of the optical film X, and passing through a polarizer b having the absorption axis parallel to the absorption axis of the polarizer a, satisfies a specific condition.

METHOD FOR IMPROVING VISIBILITY OF LIQUID CRYSTAL DISPLAY DEVICE, AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME

The present invention provides a liquid crystal display method capable of, when a screen thereof is observed through a polarizer such as sunglasses, ensuring an excellent visibility regardless of the angle of observation. In a liquid crystal display device at least having a backlight light source, a liquid crystal cell, and a polarizer disposed on a viewing side of the liquid crystal cell, a white light-emitting diode is used as the backlight light source; and a polymer film having a retardation of from 3,000 nm to 30,000 nm is used so as to be disposed on the viewing side of the polarizer so that an angle between an absorption axis of the polarizer and a slow axis of the polymer film becomes about 45 degrees. 1. A method for improving a visibility of a liquid crystal display device at least comprising a backlight light source , a liquid crystal cell , and a polarizer disposed on a viewing side of the liquid crystal cell , which method comprises:using a white light-emitting diode as the backlight light source; andusing a polymer film having a retardation of from 3,000 nm to 30,000 nm, which polymer film is disposed on the viewing side of the polarizer so that an angle between an absorption axis of the polarizer and a slow axis of the polymer film becomes about 45 degrees.2. The method for improving a visibility of a liquid crystal display device according to claim 1 , wherein the white light-emitting diode is a light-emitting device comprising a combination of an yttrium-aluminum-garnet yellow phosphor with a blue light-emitting diode using a compound semiconductor.3. The method for improving a visibility of a liquid crystal display device according to claim 1 , wherein the polymer film is an oriented polycarbonate film.4. The method for improving a visibility of a liquid crystal display device according to claim 1 , wherein the polymer film is an oriented polyester film.5. A liquid crystal display device using a method for improving a visibility according to .6. A ...

INTEGRALLY MOLDED MULTI-OPTICAL TRANSMISSION SHEET, INTEGRALLY MOLDED MULTI-OPTICAL TRANSMISSION SHEET CONNECTOR AND METHOD FOR MANUFACTURING THE SAME

An integrally molded multi-optical transmission sheet includes: a sheet-like coated portion formed of plastic; and a plurality of optical transmission regions having a core region formed of plastic, and a clad region formed of plastic and surrounding an outer periphery of the core region, which are provided inside the coated portion to extend along an extending direction of the coated portion, wherein the plurality of optical transmission regions are arranged in a row substantially parallel to each other along a main surface of the coated portion, and in a case where light is incident from one end face side of the plurality of optical transmission regions and transmitted toward the other end face side, a Mvalue of emitted light is 1.7 or more. 1. An integrally molded multi-optical transmission sheet comprising:a sheet-like coated portion formed of plastic; anda plurality of optical transmission regions, provided inside the coated portion to extend along an extending direction of the coated portion, having a core region formed of plastic, and a clad region formed of plastic and surrounding an outer periphery of the core region,wherein the plurality of optical transmission regions are arranged in a row substantially parallel to each other along a main surface of the coated portion, and{'sup': '2', 'in a case where light is incident from one end face side of the plurality of optical transmission regions and transmitted toward another end face side, a Mvalue of emitted light is 1.7 or more.'}2. The integrally molded multi-optical transmission sheet according to claim 1 , wherein the Mvalue is 5.0 or less.3. An integrally molded multi-optical transmission sheet comprising:a sheet-like coated portion formed of plastic; anda plurality of optical transmission regions, provided inside the coated portion to extend along an extending direction of the coated portion, having a core region formed of plastic, and a clad region formed of plastic and surrounding an outer periphery ...

DISPLAY DEVICE AND METHOD FOR SELECTING OPTICAL FILM OF DISPLAY DEVICE

There is provided a display device exhibiting a good color reproducibility, even when observed through polarized sunglasses. A display device comprises a polarizer a and an optical film X on a surface on a light emitting surface side of a display element, wherein L, which is the light incident vertically on the optical film X, among light incident on the optical film X from the display element side, satisfies a specific condition, and L, which is the light emitting vertically from the light emitting surface side of the optical film X, and passing through a polarizer b having the absorption axis parallel to the absorption axis of the polarizer a, satisfies a specific condition. 1. A display device comprising a display element , and a polarizer a and an optical film X on a surface on a light emitting surface side of the display element , and satisfying the following condition 1-1 and condition 2-1: [{'sub': 1', '1', 'max', '1', 'max', '1', 'max', '1, 'let Lrepresent light incident vertically on the optical film X, among light incident on the optical film X from a display element side; an intensity of the Lis measured every 1 nm; it is assumed that a blue wavelength band range from 400 nm to less than 500 nm, a green wavelength band range from 500 nm to less than 600 nm, and a red wavelength band range from 600 nm to 780 nm; let Brepresent a maximum intensity of the blue wavelength band of the L, Grepresent a maximum intensity of the green wavelength band of the L, and Rrepresent a maximum intensity of the red wavelength band of the L;'}, {'sub': 1', 'B', 'max', '1', 'G', 'max', '1', 'R', 'max, 'let Lλrepresent a wavelength showing the B, Lλrepresent a wavelength showing the G, and Lλrepresent a wavelength showing the R;'}, {'sub': B', 'max', '1', 'B', 'G', 'max', '1', 'G', 'G', 'max', '1', 'G', 'R', 'max', '1', 'R, 'let +αrepresent a minimum wavelength showing ½ or less of the intensity of the B, and located in a plus direction side of Lλ, −αrepresent a maximum ...

LIQUID CRYSTAL DISPLAY APPARATUS

A liquid crystal display apparatus includes a liquid crystal display panel including a liquid crystal cell between first second polarizing plates; and a surface light source device. The surface light source device includes a light source unit, a light guide plate for outputting first directivity light having directivity of maximum intensity in a first direction, which forms a predetermined angle from a normal direction of the light output surface in a plane approximately parallel to a light guiding direction of light, and having a high ratio of a polarized light component oscillating in the plane and a prism sheet being configured to convert the first directivity light into second directivity light directed in a second direction within a predetermined angle from the normal direction of the light output surface of the light guide plate while substantially maintaining a polarization state of the first directivity light. 1. A liquid crystal display apparatus , comprising:a liquid crystal display panel comprising a liquid crystal cell between a first polarizing plate provided on a viewer side and a second polarizing plate provided on a back surface side; anda surface light source device for illuminating the liquid crystal display panel from the back surface side, a light source unit;', 'a light guide plate for causing light from the light source unit to enter from a light incident surface opposed to the light source unit, and for outputting first directivity light from a light output surface opposed to the liquid crystal display panel, the first directivity light being polarized light having directivity of maximum intensity in a first direction, which forms a predetermined angle from a normal direction of the light output surface in a plane approximately parallel to a light guiding direction of light, and having a high ratio of a polarized light component oscillating in the plane; and', 'a prism sheet arranged on a liquid crystal display panel side with respect to the ...

OPTICAL TRANSMISSION SYSTEM AND ELECTRO-OPTICAL CONVERSION DEVICE

An optical transmission system transmits a Radio Frequency (RF) signal by a frequency division multiplexing method. The optical transmission system includes a Transmitter Optical SubAssembly (TOSA), an optical fiber, and a Receiver Optical SubAssembly (ROSA). The TOSA includes a surface emitting laser diode configured to be capable of emitting light at output of 0.8 mW or more. In the optical transmission system including the surface emitting laser diode, a noise index obtained by a measurement method including a predetermined step is 10.0 dBμV or less. 1. An optical transmission system for transmitting an RF signal by a frequency division multiplexing method comprising:an electro-optical conversion device for receiving an RF signal, converting the RF signal into an optical signal, and transmitting the optical signal,an optical transmission line for transmitting the optical signal transmitted from the electro-optical conversion device, andan opto-electrical conversion device for converting the optical signal transmitted from the optical transmission line into an RF signal and transmitting the RF signal, whereinthe electro-optical conversion device includes a light source capable of emitting light at output of 0.8 mW or more, anda noise index obtained by a measurement method including the following first to sixth steps is 10.0 dBμV or less.First step: a constant current source is connected to the electro-optical conversion device at the upstream side in a transmission direction thereof, and a frequency analyzer is connected to the opto-electrical conversion device at the downstream side in the transmission direction thereof.Second step: a constant current is input from the constant current source to the electro-optical conversion device, and at the same time, an electrical signal input from the opto-electrical conversion device is analyzed with the frequency analyzer, and a waveform having a frequency on the horizontal axis and the intensity on the vertical axis is ...

IMAGE DISPLAY DEVICE

The present invention aims to provide an image display device including an optical film having a thickness suitable for practical use without including any special inorganic material, wherein the image display device has high color rendering properties and is capable of minimizing the occurrence of blackout and interference colors (rainbow unevenness) even when the image display device includes light sources that emit light having a narrow emission spectrum. The present invention provides an image display device including an optical film having an in-plane birefringence and a polarizer in this order, wherein the optical film and the polarizer are disposed to form an angle of about 45° between a slow axis of the optical film and an absorption axis of the polarizer, the optical film has a retardation of 3000 nm or more, and light incident on the optical film provides at least 50% coverage of ITU-R BT. 1. An image display device comprising:an optical film having an in-plane birefringence; anda polarizer in this order,wherein the optical film and the polarizer are disposed to form an angle of about 45° between a slow axis of the optical film and an absorption axis of the polarizer,the optical film has a retardation of 3000 nm or more, andlight incident on the optical film provides at least 50% coverage of ITU-R BT.2020.2. The image display device according to claim 1 ,wherein the optical film has a light transmittance of 20% or higher at a wavelength of a maximum peak intensity in a wavelength range from 580 nm to 780 nm.3. The image display device according to claim 1 ,wherein the optical film has a light transmittance of 20 to 80% at a wavelength of a maximum peak intensity in a wavelength range from 580 nm to 780 nm.4. The image display device according to claim 1 ,wherein light incident on the optical film is light produced by a blue light-emitting diode, a red phosphor, and a green and/or yellow phosphor, and{'sup': '4+', 'the red phosphor is a fluoride complex ...

ILLUMINATION MODULE

Provided is an illumination module capable of preventing a light exit surface from being darker along peripheral edge portions as though having borders. An illumination module () includes: a light guiding plate (), which has an end surface () and a first principal surface (); a light source () configured to emit light that enters the end surface (); and a diffusion plate (), which has alight incident surface () and a light exit surface (). The diffusion plate () includes a protruding part (), which protrudes toward the light guiding plate () side and the light source (), which is positioned so as to face a peripheral edge portion () on the end surface () side of the light guiding plate (), and which has a light incident surface () into which light exiting the peripheral edge portion () enters. 1. An illumination module , comprising:a light guiding plate having an end surface and a first light exit surface;a light source aligned along the end surface, the light source being configured to emit light that enters the end surface; anda diffusion plate having a first light incident surface and a second light exit surface, the first light incident surface being disposed on a side of the first light exit surface of the light guiding plate, light exited from the first light exit surface entering intothe first light incident surface, light entered into the first light incident surface exiting from the second light exit surface, wherein the diffusion plate has a protruding part, the protruding part protrudes toward the light guiding plate, the protruding part is positioned so as to face at least a peripheral edge portion on a side of the end surface where the light source is aligned, out of peripheral edge portions of the first light exit surface of the light guiding plate, the protruding part has a second light incident surface, and light exited from the peripheral edge portion enters into the second light incident surface.2. The illumination module according to claim 1 , ...

DISPLAY DEVICE, AND METHOD FOR SELECTING OPTICAL FILM FOR DISPLAY DEVICE

There is provided a display device exhibiting a good color reproducibility, even when observed through polarized sunglasses. A display device comprises a display element, and a polarizer a and an optical film X on a surface on a light emitting surface side of the display element, wherein L, which is the light incident vertically on the optical film X, among light incident on the optical film X from the display element side, satisfies a specific condition, and L, which is the light emitting vertically from the light emitting surface side of the optical film X, and passing through a polarizer b having the absorption axis parallel to the absorption axis of the polarizer a, satisfies a specific condition. 1. A display device comprising a display element , and a polarizer a and an optical film X on a surface on a light emitting surface side of the display element , and satisfying the following condition 1-1 and condition 2-1: [{'sub': 1', '1', 'max', '1', 'max', '1', 'max', '1, 'let Lrepresent light incident vertically on the optical film X, among light incident on the optical film X from a display element side; an intensity of the Lis measured every 1 nm; it is assumed that a blue wavelength band range from 400 nm to less than 500 nm, a green wavelength band range from 500 nm to less than 600 nm, and a red wavelength band range from 600 nm to 780 nm; let Brepresent a maximum intensity of the blue wavelength band of the L, Grepresent a maximum intensity of the green wavelength band of the L, and Rrepresent a maximum intensity of the red wavelength band of the L;'}, {'sub': 1', 'B', 'max', '1', 'G', 'max', '1', 'R', 'max, 'let Lλrepresent a wavelength showing the B, Lλrepresent a wavelength showing the Gand Lλrepresent a wavelength showing the R;'}, {'sub': B', 'max', '1', 'B', 'G', 'max', '1', 'G', 'G', 'max', '1', 'G', 'R', 'max', '1', 'R, 'let +αrepresent a minimum wavelength showing a ½ or less of the intensity of the B, and located in a plus direction side of Lλ, −α ...

Optical material, optical component, and apparatus

An optical material includes: a medium that is transparent with respect to visible light; and a plurality of crystal materials having birefringence, the crystal materials being dispersed in the medium. The optical material is configured to randomize a polarization state of incident visible light, and emit visible light having a polarization degree lower than a polarization degree of the incident visible light.

MULTI-LAYER WIRING BOARD AND METHOD FOR PRODUCING MULTI-LAYER WIRING BOARD

This multi-layer wiring board is provided with an insulating substrate, an inner layer copper sheet, and an outer layer copper foil. The inner layer copper sheet is disposed within the insulating substrate and has been patterned. The outer layer copper foil is disposed in a state of having been patterned at the surface of the insulating substrate, is thinner than the inner layer copper sheet, and has a cross-sectional area of the current path that is smaller than the cross-sectional area of the current path of the inner layer copper sheet. As a result, provided are: a multi-layer wiring board that can flow a large current and a smaller current while suppressing an increase in the projected area of the substrate; and a method for producing the multi-layer wiring board. 114-. (canceled)15. A multi-layer wiring board comprising:an insulative base material;a pair of first layers arranged in the insulative base material and arranged one above the other in a stacking direction, wherein each of the first layers is formed from a patterned inner layer metal plate;a pair of second layers arranged one above the other in the stacking direction, wherein each of the second layers is formed from an outer layer metal foil arranged in a patterned state on a surface of the insulative base material, wherein the outer layer metal foil is thinner than the inner layer metal plate and has a current path with a cross-sectional area smaller than that of a current path of the inner layer metal plate; anda pair of third layers arranged one above the other in the stacking direction, whereina pad connected with a control semiconductor element and a pad connected with a power semiconductor element are formed in the third layer, andthe pad connected with the power semiconductor element is connected with the inner layer metal plate, and the pad connected with the control semiconductor element is connected with the outer layer metal foil.16. The multi-layer wiring board according to claim 15 , ...

Circuit board, and manufacturing method for circuit board

A circuit board, onto which an electronic component is to be mounted, is provided with insulating core substrates and patterned metal plates. The metal plates are bonded to at least one side of the insulating core substrates. The insulating core substrates and the metal plates form a laminated body, in which a gas-vent hole is provided. The gas-vent hole is formed so that when the electronic component is mounted, the gas present between the insulating core substrates and the metal plates expands and is released to a side open to the atmosphere via the gas-vent hole.

Optical Resin Material And Manufacturing Method Therefor

An optical resin material includes a multicomponent system whose number of components z which is defined under a counting condition of including original number x(x≧2) of copolymer into the number of components is three or more. Wherein the combination of the components constituting the multicomponent system is selected such that: at least one of respective signs of intrinsic orientational-birefringences of respective homopolymers which correspond to respective monomers constituting respective components of the copolymer and signs of orientational-birefringence properties which the low-molecular-weight organic compound presents in common in the respective homopolymers has a different sign from those of others, and also, at least one of photoelastic-birefringence properties of the respective homopolymers and photoelastic-birefringence properties which the low-molecular-weight organic compound presents in common in the respective homopolymers has a different sign from those of others. 1. An optical resin material including a multicomponent system whose number of components z which is defined under a counting condition of including original number x(x≧2) of copolymer into the number of components is three or more , whereinsaid multicomponent system is constituted only by a copolymer whose original number x is three or more, or is constituted by a copolymer whose original number x is two or more and by at least one kind of low-molecular-weight organic compound which has polarizability anisotropy and which can be oriented in polymer;the combination of the components constituting said multicomponent system is selected such that:at least one of respective signs of intrinsic orientational-birefringences of respective homopolymers which correspond to respective monomers constituting respective components of said copolymer and signs of orientational-birefringence properties which said low-molecular-weight organic compound presents in common in said respective homopolymers has ...

Optical film and liquid crystal display device comprising the optical film

Disclosed is an optical film produced by a method comprising continuously discharging a molten resin on a casting roll through a die lip of an extruder, wherein the molten resin contains a copolymer of (A) 75 to 99% by weight of an (meth)acrylate monomer that, when homopolymerized, has a negative intrinsic birefringence, and (B) 1 to 25% by weight of an (meth)acrylate monomer that, when homopolymerized, has a positive intrinsic birefringence, and a velocity ratio V 2 /V 1 of 1.2 to 15 is satisfied wherein V 1 represents a discharge velocity of the molten resin from the die lip, m/min; and V 2 represents a surface velocity of the casting roll, m/min.

OPTICAL FILM, RESIN MATERIAL FOR OPTICAL FILM, AND IMAGE DISPLAY DEVICE

Disclosed is an optical film comprising a resin material containing a copolymer of 20 to 90% by weight of methyl methacrylate, 10 to 70% by weight of tert-butylcyclohexyl methacrylate represented by formula (I): 3. The optical film according to claim 2 , wherein the resin material has a glass transition temperature of 105° C. or above.4. The optical film according to claim 2 , wherein the number of times of flexing in an MIT flex resistance test according to JIS (Japanese Industrial Standards) P 8115 is 100 times or more.6. A method for producing an optical film comprising the steps of:melt-extruding a resin material for an optical film according to to obtain an undrawn film; and drawing the undrawn film by a factor of 1.4 to 6.0 times in terms of area ratio to obtain an optical film.7. An image display device comprising an optical film according to .8. The optical film according to claim 3 , wherein the number of times of flexing in an MIT flex resistance test according to JIS (Japanese Industrial Standards) P 8115 is 100 times or more.9. An image display device comprising an optical film according to .10. An image display device comprising an optical film according to .11. An image display device comprising an optical film according to . The present invention relates to an optical film, a resin material for an optical film, and an image display device.Acrylic polymers typified by PMMA (polymethyl methacrylate) have a high light transmittance, possess excellent moldability, and thus have hitherto been applied as optical materials in various applications. In recent years, films using thermoplastic acrylic resins have become more and more used as optical members for image display devices such as liquid crystal display devices, plasma displays, and organic EL display devices.For example, patent document 1 describes a transparent acrylic film comprising 90 to 99.9% by weight of an acrylic resin that has a glass transition temperature of 120° C. or above and has a ...

TRANSFORMER

A transformer includes a first substrate, a second substrate, and an insulation sheet. A primary winding and a primary switching element are mounted on the first substrate. A secondary winding formed by a pattern of a metal plate is mounted on the second substrate. The second substrate overlaps the first substrate. The insulation sheet is arranged between the first substrate and the second substrate. 1. A transformer comprising:a first substrate on which a primary winding and a primary switching element are mounted;a second substrate on which a secondary winding formed by a pattern of a metal plate is mounted, wherein the second substrate overlaps the first substrate; andan insulation sheet arranged between the first substrate and the second substrate.2. The transformer according to claim 1 , wherein:the primary winding includes an extended wire, andthe primary winding is connected to the first substrate with the extended wire separated from a contour of the secondary winding.3. The transformer according to claim 1 , wherein:the primary winding includes an extended wire, andthe extended wire is embedded in the first substrate.4. The transformer according to claim 1 , wherein:the second substrate includes a formation surface, on which the pattern of the metal plate is formed, and an opposite surface, which is located on an opposite side of the formation surface; andthe opposite surface includes a metal plate connected to a heat dissipation member.5. The transformer according to claim 1 , wherein:the first substrate and the second substrate each include an insertion hole for insertion of a core, andan insulative tube is fitted to the insertion hole. The present invention relates to a transformer.An insulation-type DC-DC converter uses a transformer, which includes a primary winding and a secondary winding. Japanese Laid-Open Patent Publication No. 2013-150414 describes an example of a technique for integrating the primary winding and the secondary winding. The ...

PLANAR COIL AND MANUFACTURING METHOD FOR TRANSFORMER AND PLANAR COIL

A planar coil includes an effective line segment, which extends over at least one turn and is configured such that a current flows therein, and a dummy line segment, which extends over at least one turn and is configured such that a current does not flow therein. 110-. (canceled)11. A planar coil intermediate body comprising:a metal plate including a spiral winding section, which includes a plurality of turns, and a connection section, which connects all of the turns in a radial direction; andan insulation substrate including a first surface to which the metal plate is bonded or joined.12. The planar coil intermediate body according to claim 11 , wherein the insulation substrate includes a second surface on which a conductive line is located.13. The planar coil intermediate body according to claim 12 , wherein the conductive line has a spiral shape and is symmetrical to the turns of the winding section with respect to the insulation substrate.14. The planar coil intermediate body according to claim 13 , wherein a part of the turns of the winding section forms a primary winding of a transformer claim 13 , and the conductive line forms a secondary winding of the transformer.15. The planar coil intermediate body according to claim 14 , wherein a heat dissipation member is thermally coupled to at least one of the metal plate and the conductive line.16. A method for manufacturing a planar coil claim 14 , the method comprising:a first step of forming, by stamping a metal plate, a spiral winding section and a connection section, which connects turns of the winding section in a radial direction;a second step of bonding the metal plate that is stamped out in the first step to a substrate; anda third step of stamping out an unnecessary section of the metal plate that is bonded to the substrate in the second step to form an effective line segment, which extends over at least one turn and is configured to carry a current, and a dummy line segment, which extends over at least ...

GAS SEPARATION MEMBRANES BASED ON PERFLUORINATED POLYMERS

Disclosed herein is a process for separating components of a gas mixture using gas-separation copolymer membranes. These membranes use a selective layer made from copolymers of perfluorodioxolane monomers. The resulting membranes have superior selectivity performance for gas pairs of interest while maintaining fast gas permeance compared to membranes prepared using conventional perfluoropolymers, such as Teflon® AF, Hyflon® AD, and Cytop®. 1. A process for separating two components , A and B , of a gas mixture , comprising:(a) passing the gas mixture across a separation membrane having a feed side and a permeate side, the separation membrane having a selective layer comprising a copolymer comprising at least two perfluorodioxolane monomers;(b) providing a driving force for transmembrane permeation;(c) withdrawing from the permeate side a permeate stream enriched in component A compared to the gas mixture; and(d) withdrawing from the feed side a residue stream depleted in component A compared to the gas mixture.3. The process of claim 1 , wherein component A is chosen from the group consisting of hydrogen claim 1 , carbon dioxide claim 1 , nitrogen claim 1 , helium and organic compounds.4. The process of claim 1 , wherein component A is hydrogen.5. The process of claim 1 , wherein component A is carbon dioxide.6. The process of claim 1 , wherein component A is nitrogen.7. The process of claim 1 , wherein component A is helium.8. The process of claim 1 , wherein component B is methane.9. The process of claim 1 , wherein the gas mixture farther comprises methane and Chydrocarbon vapors.10. The process of claim 1 , wherein component A is nitrogen and component B is methane.11. The process of claim 1 , wherein component A is carbon dioxide and component B is methane.12. The process of claim 1 , wherein component A is hydrogen and component B is methane.13. The process of claim 1 , wherein component A is helium and component B is methane. This application is a ...

WIRING BOARD AND WIRING BOARD PRODUCTION METHOD

A wiring board includes a first substrate including a first surface and a second substrate including a first surface. A solder hole is arranged at least in the first surface of the first substrate. A solder hole is arranged at least in the first surface of the second substrate. The second substrate is coupled to the first substrate. The first substrate and the second substrate are electrically connected with each other. The first surface of the first substrate and the first surface of the second substrate are flush with each other and configured such that a part of one surface of a mask is placed on the first surface of the first substrate and another part of the surface of the mask is placed on the first surface of the second substrate. 1. A wiring board comprising:a first substrate including a first surface, wherein a solder hole is arranged at least in the first surface; anda second substrate including a first surface, wherein a solder hole is arranged at least in the first surface, and the second substrate is coupled to the first substrate, whereinthe first substrate and the second substrate are electrically connected with each other,the first surface of the first substrate and the first surface of the second substrate are flush with each other and configured such that a part of one surface of a mask is placed on the first surface of the first substrate and another part of the surface of the mask is placed on the first surface of the second substrate.2. The wiring board according to claim 1 , further comprising a component that is mass-soldered to at least one of the first substrate and the second substrate.31. The wiring board according to claim claim 1 , further comprising a positioning portion arranged in at least one of the first substrate and the second substrate.4. The wiring board according to claim 3 , wherein the positioning portion includes a projection that is arranged in one of the first substrate and the second substrate and a recess that is ...

ACRYLIC COPOLYMER, OPTICAL FILM, POLARIZING PLATE AND LIQUID CRYSTAL DISPLAY DEVICE

There are provided an optical film having both low orientation birefringence and low photoelastic birefringence and, at the same time, having excellent transparency and heat resistance, and a polarizing plate including the optical film and a liquid crystal display device. An acrylic copolymer according to the present invention includes as constituent units 0.5 to 35% by mass of N-aromatic substituted maleimide units and 60 to 85% by mass of alkyl (meth)acrylate units having a negative intrinsic birefringence in terms of a homopolymer. 111-. (canceled)12. An optical film produced by biaxially stretching an unstretched film of a resin material containing an acrylic copolymer comprising as constituent units 0.5 to 35% by mass of N-aromatic substituted maleimide units and 60 to 85% by mass of alkyl (meth)acrylate units having a negative intrinsic birefringence in terms of a homopolymer.1315-. (canceled)16. A polarizing plate comprising the optical film according to .17. A liquid crystal display device comprising a polarizing plate according to .18. The optical film according to claim 12 , wherein the acrylic copolymer further comprises third constituent units selected from the group consisting of N-alkyl substituted maleimide units and (meth)acrylic ester units having a positive intrinsic birefringence in terms of a homopolymer.19. The optical film according to claim 18 , wherein the content of the third constituent units is 1 to 24% by mass.20. The optical film according to claim 12 , wherein the N-aromatic substituted maleimide units include N-phenylmaleimide units. The present invention relates to an acrylic copolymer and more specifically relates to an acrylic copolymer that can be formed into films having both low orientation birefringence and low photoelastic birefringence and, at the same time, having excellent transparency, heat resistance, and flexibility, and an optical film including the acrylic copolymer, a polarizing film and a liquid crystal display device ...

SUBSTRATE (As Amended)

A substrate includes an insulating substrate, a metal layer formed on one surface of the insulating substrate, and an electronic component soldered to the surface of the metal layer. The metal layer is formed of a metal plate. The surface of the metal layer has a soldering area, and a groove portion positioned on the outer periphery of the soldering area. 1. A substrate comprising:an insulating substrate;a metal layer formed on a surface of the insulating substrate; andan electronic component soldered to a surface of the metal layer, wherein:the metal layer is made of a metal plate,the surface of the metal layer includes a soldering region and a groove portion that is located on a periphery of the soldering region,the groove portion includes a bottom surface, which is formed of the metal layer, a first side surface, which is located at a side corresponding to the soldering region, and a second side surface, which is located at a side opposite to the soldering region, anda solder spreads from an area between the metal layer and the electronic component and flows into the groove portion to form a soldering fillet spreading from the electronic component to the second side surface of the groove portion.2. The substrate according to claim 1 , wherein the groove portion is endless and surrounds the soldering region.3. The substrate according to claim 2 , whereinthe surface of the metal layer and the first side surface form an angle from 95 to 150 degrees, inclusive, andthe surface of the metal layer and the second side surface form an angle from 95 to 150 degrees, inclusive.4. The substrate according to claim 3 , wherein the angle formed by the surface of the metal layer and the first side surface is greater than the angle formed by the surface of the metal layer and the second side surface.5. (canceled)6. The substrate according to claim 1 , whereinthe metal layer is one of two metal layers that are spaced apart from each other,the electronic component is arranged to ...

MODULE FOR FACILITATING POSITIONING OF ELECTRONIC COMPONENTS

This module includes an insulating substrate having a first surface and a second surface, which are positioned on opposite sides to each other, a first metal layer that is provided on the first surface of the insulating substrate and include a metal plate, a second metal layer provided on the second surface of the insulating substrate, a first circuit board including the insulating substrate, the first metal layer, and the second metal layer, an electronic component joined to the first metal layer, and a positioning portion, which is located on the joint surface between the first metal layer and the electronic component, at which the first metal layer and the electronic component are engaged with each other through a recess-projection relationship. The insulating substrate is located between the second metal layer and a part of the first metal layer where the positioning portion is located. 1. A module comprising:an insulating substrate having a first surface and second surface, which are located on opposite sides;a first metal layer including by a metal plate provided on the first surface of the insulating substrate;a second metal layer provided on the second surface of the insulating substrate;a first circuit board that includes the insulating substrate, the first metal layer, and the second metal layer;an electronic component joined to the first metal layer; anda positioning portion provided on a joint surface between the first metal layer and the electronic component, wherein, at the positioning portion, the first metal layer and the electronic component are engaged with each other through a recess-projection relationship,wherein the insulating substrate is located between the second metal layer and a portion of the first metal layer at which the positioning portion is provided.2. The module according to claim 1 , whereinthe positioning portion includes a projection on the electronic component and a recess in the first circuit board, the projection being ...

CONNECTOR

When a moving member moves to a fixing position, a fixing member moves to a second fixing position, a blade of the fixing member cuts into a protection layer of a cord, and thereby the cord is fixed. When the moving member moves to a releasing position, the fixing member moves to a second releasing position, the blade leaves the protection layer, and thereby the cord is released. 1. A connector for being connected with a cord having a transmission part to transmit signals and a protection layer covering the transmission part , the connector comprising:a body;a moving member, configured to be movable, relatively to the body, between a releasing position and a fixing position in a first direction from the releasing position; anda fixing member, configured to be movable, relatively to the body, between a second releasing position and a second fixing position in a second direction from the second releasing position, the second direction being different from the first direction, whereinthe fixing member has a blade configured to cut into the protection layer,movement of the moving member causes movement of the fixing member,when the moving member moves to the fixing position, the fixing member moves to the second fixing position, the blade cuts into the protection layer, and thereby the cord is fixed, andwhen the moving member moves to the releasing position, the fixing member moves to the second releasing position, the blade leaves the protection layer, and thereby the cord is released.2. The connector of claim 1 , whereinthe moving member has a guide groove extending along a third direction different from the first direction and the second direction, andthe fixing member has a guide projection engaging with the guide groove.3. The connector of claim 2 , whereinthe body has a second guide groove extending along the second direction, andthe guide projection engages with the guide groove and the second guide groove.4. The connector of claim 2 , wherein a introducing ...

LIQUID CRYSTAL DISPLAY APPARATUS

A liquid crystal display apparatus comprises: a liquid crystal display panel including a liquid crystal cell between a first polarizing plate and a second polarizing plate; and a surface light source device having a light source unit and a light guide plate. In a polarized light output from the light guide plate, when the normal direction of a light output surface is defined to be at a polar angle of 90°, and the light guiding direction of the light guide plate is defined to be a direction of an azimuth angle of 0°-180°, a ratio La/Lt of integrated intensity La of output light in ranges where the polar angle is 50° to 80° and the azimuth angle is 135° to 225°, 0° to 45°, and 315° to 360° to integrated intensity Lt of total output light is 0.3 or more. 1. A liquid crystal display apparatus , comprising:a liquid crystal display panel comprising a liquid crystal cell between a first polarizing plate provided on a viewer side and a second polarizing plate provided on a back surface side; anda surface light source device for illuminating the liquid crystal display panel from the back surface side, a light source unit; and', 'a light guide plate for causing light from the light source unit to enter from a light incident surface opposed to the light source unit, and for outputting polarized light from a light output surface opposed to the liquid crystal display panel, the polarized light having directivity of maximum intensity in a direction that forms a predetermined angle from a normal direction of the light output surface in a plane approximately parallel to a light guiding direction of the light,, 'wherein the surface light source device comprises a polarizing portion comprising an absorptive polarizer; and', 'a prism portion arranged on a light guide plate side of the polarizing portion, the prism portion comprising a plurality of columnar unit prisms arrayed so as to protrude on the light guide plate side, and, 'wherein the second polarizing plate compriseswherein, ...

METHOD FOR MEASURING BIREFRINGENCE TEMPERATURE DEPENDENCE OF ADHESIVE, METHOD FOR DESIGNING AND MANUFACTURING ADHESIVE, ADHESIVE, DISPLAY, AND OPTICAL FILM

The present invention intends to provide a display, or an optical film with an adhesive, in which a bend of the display or peeling of the optical film does not occur even when the display or the optical film is used under an environment where a temperature change is large, and birefringence due to deformation of an adhesive can be suppressed stably irrespective of the temperature change, and occurrence of light leakage and the like is suppressed, so that the optical performance is more excellent, by pasting a glass plate and an optical film together with an adhesive in which temperature dependence of the birefringence is zero. The present invention relates to a technique for obtaining the above-described effects, the technique capable of stably providing an adhesive in which both the birefringence and the temperature dependence of the birefringence are zero, the adhesive having a measured value of birefringence of an adhesive Δnwithin a range of ±0.2×10and having a temperature coefficient of the birefringence of an adhesive dΔn/dT within a range of ±0.02×10/° C. The adhesive is utilized in a display having a structure obtained by pasting a transparent substrate and an optical film together through an adhesive layer, or is utilized in an adhesive layer of an optical film with an adhesive. 1. A method for measuring temperature dependence of birefringence of an adhesive , the method comprising:a step of preparing a laminated film in which polymer films are used as supports, and an adhesive comprising a (meth)acrylate-containing acrylic-based copolymer and a hardener added to the acrylic-based copolymer is given between two sheets of the supports to form an adhesive layer;a step of hot-stretching the laminated film;a step of measuring retardation of the laminated film after the hot-stretching; anda step of measuring a thickness of the adhesive layer, wherein:birefringence of an adhesive for the adhesive is defined as a value obtained by dividing the retardation by the ...

SUBSTRATE AND METAL LAYER MANUFACTURING METHOD

This substrate includes an insulating substrate having a first surface and a second surface, and a metal layer of a metal plate bonded to the first surface. The insulating substrate has a through hole. The metal layer includes: a bent section that is inserted through the through hole and bulges from the first surface toward the second surface; and outer periphery sections that are positioned around the bent section and are bonded to the first surface. The bent section has a first end and a second end positioned on opposite sides, and is bent with respect to the outer periphery sections at the first end and the second ends. The outer periphery sections are divided into a first outer periphery section and a second outer periphery section, which are respectively continuous with the first end and the second end of the bent section. 18.-. (canceled)9. The substrate comprising:an insulating substrate including a first surface and a second surface; anda metal layer that is adhered to the first surface and made of a metal plate, whereinthe insulating substrate includes a through hole,the metal layer includes a bent portion, which is inserted into the through hole and protrudes in a direction extending from the first surface to the second surface, and a periphery portion, which is located around the bent portion and adhered to the first surface,the bent portion includes a first end and a second end that are located on opposite sides, the bent portion is bent from the periphery portion at the first end and the second end,the periphery portion is divided into a first periphery portion, which is continuous with the first end of the bent portion, and a second periphery portion, which is continuous with the second end of the bent portionthe first periphery portion includes a first side portion that is continuous with the first end of the bent portion,the second periphery portion includes a second side portion that is continuous with the second end of the bent portion,the first ...

ACRYLIC COPOLYMER, OPTICAL FILM, POLARIZING PLATE AND LIQUID CRYSTAL DISPLAY DEVICE

There are provided an optical film having both low orientation birefringence and low photoelastic birefringence and, at the same time, having excellent transparency and heat resistance, and a polarizing plate including the optical film and a liquid crystal display device. An acrylic copolymer according to the present invention includes as constituent units 0.5 to 35% by mass of N-aromatic substituted maleimide units and 60 to 85% by mass of alkyl (meth)acrylate units having a negative intrinsic birefringence in terms of a homopolymer. 1. An acrylic copolymer comprising as constituent units 0.5 to 35% by mass of N-aromatic substituted maleimide units and 60 to 85% by mass of alkyl (meth)acrylate units having a negative intrinsic birefringence in terms of a homopolymer.2. The acrylic copolymer according to claim 1 , which further comprises third constituent units selected from the group consisting of N-alkyl substituted maleimide units and (meth)acrylic ester units having a positive intrinsic birefringence in terms of a homopolymer.3. The acrylic copolymer according to claim 2 , wherein the content of the third constituent units is 1 to 24% by mass.4. The acrylic copolymer according to any one of to claim 2 , wherein the N-aromatic substituted maleimide units include N-phenylmaleimide units.511-. (canceled)123. An optical film produced by biaxially stretching an unstretched film of a resin material containing an acrylic copolymer according to any one of -.1315-. (canceled)16. A polarizing plate comprising an optical film according to .17. A liquid crystal display device comprising a polarizing plate according to . The present invention relates to an acrylic copolymer and more specifically relates to an acrylic copolymer that can be formed into films having both low orientation birefringence and low photoelastic birefringence and, at the same time, having excellent transparency, heat resistance, and flexibility, and an optical film including the acrylic copolymer, a ...

Fluid separation process using membranes based on perfluorinated polymers

A process for separating components of a fluid mixture using membranes comprising a selective layer made from copolymers of perfluorinated dioxolanes. The resulting membranes have superior selectivity performance for fluid pairs of interest while maintaining fast fluid permeance compared to membranes prepared using conventional perfluoropolymers, such as Teflon® AF, Hyfion® AD, and Cytop®.

Manufacture of synthetic resin optical element having refractive index distribution

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Production of synthetic resin spherical lens

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Vehicle braking control device

Taking a stroke within a period from when an operation of a brake operating member is started to when a predetermined stroke operation is performed as an ineffective stroke in which the master cylinder pressure is not generated, a control means controls an amount of differential pressure formed by a differential control valve such that a hydraulic braking force that corresponds to a stroke of the brake operating member is generated during the ineffective stroke, and even after the stroke of the brake operating member exceeds the ineffective stroke, increases the wheel cylinder pressure by performing raising of the amount of differential pressure formed by the differential pressure control valve by a predetermined raising amount with respect to the amount of differential pressure during the ineffective stroke.

Light-scattering light-guiding device

A light-scattering light-guiding device includes a light-scattering light guide having an incident surface, an exit surface from which scattered light is emitted, and a volume region having uniform scattering power. The volume region has an effective scattering illumination parameter E (cm -1 ) whose value satisfies the relation 0.45≦E≦100. The light guide has a nonuniform refractive index structure having a correlation function γ (r), which is approximated by exp {-R/A}, where r is the distance between two points in the light guide. This distance a satisfies the relation 0.01 μm≦a≦50 μm. It is not necessary to form a scattering layer of diffusive ink or the like on the rear surface of the light guide. If an exit direction-modifying device having a prismatic cross section is disposed on the side of the exit surface, the flux of the outgoing light directed in a specified direction can be increased. The nonuniform refractive index structure is obtained by kneading together a polymer matrix and a particulate material of a different refractive index, by kneading together two or more kinds of polymers of different refractive indices, or by dispersing a particulate material, utilizing suspension polymerization. The light guide is obtained by a molding process.

Illumination light communication device

An illuminative light communication system for transmitting data using illuminative light is described, which comprises a light source (412) that emits light for lighting; a light source control unit (411) that controls blinking or light intensity of the light source in accordance with data to be transmitted and controls the light source to emit modulated light; an optical fiber (413) that transmits the modulated light emitted from the light source (412); and a light scatterer (414) that is provided at an end of the optical fiber, scatters the modulated light transmitted through the optical fiber, and emits the scattered, modulated light; wherein the scattered light emitted from the light scatterer (414) is used for lighting and transmission of the data.

Illumination light communication device

There are provided various structures for realizing communication using illumination light and their application examples. An illumination light communication device in a broadcast system includes an LED light source (115) for illumination, a power line (103) for supplying power to the LED light source (115), a power line modulator (102) for modulating a plurality of information, multiplexing them, superimposing them on a power waveform, and transmitting them to the power line (103), and a filter (112) for isolating one or more information from the plurality of information modulated on the power line and controlling light intensity or blinking of the LED light source (115), so that information is transmitted by the light intensity change of blinking of the LED light source.

Extrusion material supply device and optical transmission body manufacturing method using the same

The invention provides an extrusion material supply device suitable for use in melt extrusion molding, and a method for manufacturing an optical transmission body, in which a deterioration of an optical signal transmission loss is extremely small, and productivity intrinsic to an extrusion molding method is provided in combination. An extrusion material supply device 1 includes: a vertical hopper 2, which has a cooling unit 3 and a heat melting unit 4 continuous with a lower portion thereof, and houses a material rod R; cooling means 5 for cooling the cooling unit 3; an electric heater 6 that heats the heat melting unit 4; and gas pressurizing means 7 for sequentially supplying molten plastics M to a metal die by a gas pressure. The heat melting unit 4 is formed into a cylinder shape in which an inner diameter is larger than an inner diameter of the cooling unit 3 arranged above, and enables the molten plastics M to spread in the heat melting unit 4. A portion between an outer circumference of the material rod R and an outer circumference of the molten plastics M is defined as an annular gas pressurizing surface 7a.

Planar coil and manufacturing method for transformer and planar coil

平面線圈包括：有效線段，係構成為在至少一圈延伸且會有電流流通；虛線段，係構成為在至少一圈延伸而且電流不會流通。

Information processing system, server and terminal

【課題】画像の一部領域をクライアント装置にネットワークを介して送信するシンクライアントシステムにおいて、小型の端末を使用してもユーザにとって操作のしやすいシンクライアントシステムを提供する。 【解決手段】情報処理システムはサーバ１０と、サーバ１０から画像データを受信し、かつ、サーバ１０にコマンドを送信する端末２０とからなり、サーバ１０は、端末２０から調整ボタンコマンドを受信すると、フォアグランドアプリケーションのウィンドウサイズと位置を変更する。 【選択図】図２

Optical resin materials with distributed refractive index

An optical resin, of which the refractive index continuously changes in a specific direction, is produced by filling a polymerization container with a mixed solution containing at least one type of polymerizable monomer or polymerizable monomer sol and at least one type of substance whose solubility parameter differs by 7 (cal/cm3)+E,fra 1/2+EE or less and refractive index by 0.001 or more from those of a polymer produced by polymerization of the monomer, and by subjecting the mixture to polymerization reaction by applying heat or energy rays to the container from outside so that the polymerization reaction starts and progresses preferentially from a particular region of the mixture, thus forming a concentration gradient of the substance having different refractive index. The polymerization container may be made of a polymer which swells and dissolves into the mixed solution from an inner wall thereof. After completing the polymerization reaction, the optical resin is subjected to hot drawing to obtain an optical conductor. Further, post-treatment based on crosslinking reaction is applied to improve heat resistance.

Extrusion method of methacrylic resin composition and light quiding plate employing the resin

(57)【要約】 【課題】 色調が優れかつ高輝度のサイドライト式 面照明装置（バックライト）用導光板に適した、微小異 物の少ない光散乱性メタクリル樹脂組成物を得る。 【解決手段】 メタクリル樹脂１００重量部に、メタク リル樹脂又はそのモノマーに対する親和性を有する有機 基が珪素原子に直結したポリシロキサン結合をなす固体 状の架橋性シリコーン樹脂からなる数平均粒子径０．３ 〜１０μｍの真球状粒子０．００１〜０．１重量部、 ０．３μｍ以上０．５未満の大きさの微小異物が１ＣＦ （Ｃｕｂｉｃ Ｆｅｅｔ）当たり１０万個以下、０．５ μｍ以上の微小異物が１ＣＦ当たり２万個以下の環境内 にある押出造粒工程にて、乾燥窒素を押出機のホッパー 内に送入しながら溶融混合分散させる。

Flat light source and liquid crystal display

A flat light source having excellent whiteness of its luminance surface and emitting soft light, and a liquid crystal display having high image quality. A relatively thick edge of a light scatter/guide member (1) having a wedged-shaped sectional shape forms a light incidence surface (2). A fluorescent lamp L is disposed in the proximity of the light incidence surface (2), and a silver foil R is so disposed as to encompass the lamp L. A prism sheet (4) is disposed outside the output surface (5) of the light source, and the orientation of the prism sheet (4) is selected so that the direction of lines of prisms coincides with a transverse direction of the light scatter/guide member (1). The direction of the prism surface may be either inward or outward. A prism sheet (8) is disposed between the back (6) of the light scatter/guide member (1) and the reflecting member (silver foil) (3). The prism sheet (8) is disposed in such a manner that its prism surface faces inward. The direction of the prism line formed on the prism surface is selected so that the direction of the lines of prisms coincides with a longitudinal direction of the light scatter/guide member (1).

Display device, and method for selecting optical film for display device

Illumination light communication device

Induction device

An induction device (10,100) includes a casing (20,110), a coil retainer (33,123), a coil (C1,C10,C11,C2) that is disposed in the casing and retained to the coil retainer and a core (40,130) that is disposed in the casing. The coil extends spirally around the core. The core and the coil retainer are fixed to the casing separately.

Connecting structure of light transmission body

(57)【要約】 【課題】光ファイバなどの光伝送体の光学的接続につい て、軸ずれ、光ファイバ端面間の隙間、端面粗さなどの 接続損失原因をある程度許容しても実用的に十分に接続 損失の少ない高性能な接続を実現できるようにする。 【解決手段】接続対象の両光ファイバ６にそれぞれの端 面６ｆでシリコーンゲルパッド８を押圧的に挟持させる ようにしている。

Circuit device

Provided is a circuit device capable of increasing the packaging density and preventing the thermal interference between circuit elements to be incorporated. In a hybrid integrated circuit device, a first circuit board and a second circuit board are fitted into a case member in a way that the first circuit board is overlaid with the second circuit board. A first circuit element is arranged on the upper surface of the first circuit board and a second circuit element is arranged on the upper surface of the second circuit board. Furthermore, inside the case member, provided is a hollow portion that is not filled with a sealing resin. Such a configuration prevents the second circuit element, which is a microcomputer, from operating unstably due to a heat generated in the first circuit element, which is a power transistor, for example.

Production of plastic optical transmission body

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Extrusion material supply device and optical transmission body manufacturing method using the same

Provided is an extrusion raw material feeding device which is used suitably in melt extrusion molding, and also provided is a method of producing an optical transmission body wherein increase in the transmission loss of an optical signal is very little and essential productivity of extrusion molding method is ensured. An extrusion raw material feeding device (1) comprises a vertical hopper (2) which has a cooling section (3) and a heating and melting section (4) continuous to the underside thereof and houses a material rod (R), a cooling means (5) for cooling the cooling section (3), an electric heater (6) which heats the heating and melting section (4), and a gas pressurization means (7) for supplying molten plastic (M) sequentially to a die by the gas pressure. The heating and melting section (4) is formed in the shape of a cylinder having the inside diameter larger than the inside diameter of the cooling section (3) located thereabove so that the molten plastic (M) can spread in the heating and melting section (4). An annular gas pressurization surface (7a) is formed between the outer circumference of the material rod (R) and the outer circumference of the molten plastic (M).

Acrylic copolymer, optical film, polarizing plate, and liquid crystal display device

【課題】フィルム状に成形した場合に配向複屈折および光弾性複屈折がともに小さく、且つ透明性および耐熱性に優れたアクリル系共重合体を提供する。また、該アクリル系共重合体を含んでなる光学フィルム、および該光学フィルムを備える偏光板および液晶表示装置を提供する。 【解決手段】本発明によるアクリル系共重合体は、Ｎ−アルキルマレイミド単位を１０質量％以上、２５質量％以下と、（メタ）アクリル酸アルキル単位を５０質量％以上、７０質量％以下と、メタクリル酸ジシクロペンタニル単位を１質量％以上、２０質量％以下と、を構成単位として含んでなる。 【選択図】なし

flat coil and manufacturing method for transformer and flat coil

resumo patente de invenção: "bobina plana e método de fabricação para transformador e bobina plana". trata-se de uma bobina plana que compreende o seguinte: um segmento de linha efetivo que se estende sobre pelo menos uma volta e que é configurado de modo que uma corrente flua no mesmo; e um segmento de linha-fantasma que se estende sobre pelo menos uma volta e que é configurado de modo que uma corrente não flua no mesmo. patent summary: "flat coil and manufacturing method for transformer and flat coil". It is a flat coil comprising the following: An effective line segment extending over at least one revolution and configured so that a current flows therein; and a phantom line segment extending over at least one revolution and configured so that a current does not flow therein.

Surface light source and asymmetric prism sheet

Method for producing the fluorinated compounds and polymers

A method for producing fluorinated compounds, in which a compound represented by the following formula (4) is produced by reaction of 2-chloro-2,2-difluoroethane-1,1-diol and at least one compound represented by the following formula (3):

Extrusion raw material feeding device and method of producing optical transmission body using the same

【課題】 製品品質及び生産性をより高いレベルで両立させることができる押出原料供給装置及びこれを用いた光伝送体の製造方法を提供する。 【解決手段】 押出原料供給装置1は、原料ロッドRが収納されるホッパー2と、ホッパー2のプラスチック原料収納部3の下流側に設けられて原料ロッドRの下端部分を加熱溶融させる加熱溶融部4と、加熱溶融部4を加熱する加熱手段8と、ガス圧で溶融樹脂Mを順次金型へ供給するためのガス加圧手段5とを備えている。プラスチック原料収納部3の下端部内面は、原料ロッドRを遊嵌可能な一定な断面形状を有している。加熱溶融部4の上端内径とプラスチック原料収納部3の下端内径とが等しくなされている。 【選択図】 図１

Method of manufacturing optical transmission medium from synthetic resin

A method of manufacturing a multimode optical transmission medium from a synthetic resin having the distribution of refractive index varying continuously in a fixed direction. In the method, a monomer is polymerized while a transparent polymer for constituting the wall of a vessel is being resolved into the monomer. Therefore, this method is free from the defect of methods using conventional polymerization reactions, and has an extremely high productivity.

Shaped articles of graduated refractive index

A monolithic, thermoplastic article with a continuously graded refractive index is formed by polymerizing a fluorinated matrix polymer in the presence of a low molecular weight, substantially unreactive guest molecule of different refractive index than the matrix polymer. The thermoplastic articles may be used to produce shaped articles such as optical waveguides, fibers or lenses of low attenuation and high bandwidth.

Dc voltage converter

【課題】メインスイッチング素子のスイッチング損失を低減するために、直流電圧変換に直接寄与しない補助電流を発生する補助的なスイッチング素子を備えた直流電圧コンバータにおいて、デューティ比の可変範囲を拡大する。 【解決手段】メインスイッチング素子Ｑ１，Ｑ２のスイッチング損失を低減するために、補助電流Ｉｒｐ，Ｉｒｐ♯を発生するための補助スイッチング素子Ｑ３，Ｑ４が設けられる。通常動作モードでは、補助スイッチング素子のオンオフを伴って、メインスイッチング素子を設定されたデューティ比に従ってオンオフすることによって、スイッチング損失低減が図られる。一方、デューティ比が所定値より高くなると、片側アームにて補助スイッチング素子および／またはメインスイッチング素子をオフに固定した上で、他方側のメインスイッチング素子をデューティ比に従ってオンオフする動作モードが適用される。 【選択図】図１

Liquid crystal display device

induction device

Eine Induktionsvorrichtung weist einen ersten Kern, der aus einem Ferritmaterial hergestellt ist, einen zweiten Kern, der aus einem Material hergestellt ist, das eine geringere magnetische Permeabilität hat als das Ferritmaterial und eine höhere Sättigungsmagnetflussdichte hat als das Ferritmaterial, eine Kühlvorrichtung und eine Spule auf. Der erste Kern und der zweite Kern wirken zusammen, um einen geschlossenen magnetischen Kreis auszubilden. Der erste Kern weist eine Kontaktfläche, die durch die Kühlvorrichtung gekühlt wird, und einen ersten magnetischen Schenkel auf, der sich zum Schneiden mit der Kontaktfläche und in Richtung des zweiten Kerns erstreckt. Der zweite Kern weist einen zweiten magnetischen Schenkel auf, der sich zum Schneiden mit der Kontaktfläche und in Richtung des ersten Kerns erstreckt und derart angeordnet, dass er durch die Spule umwickelt ist. An induction device has a first core made of a ferrite material, a second core made of a material having a lower magnetic permeability than the ferrite material and a higher saturation magnetic flux density than the ferrite material, a cooling device, and a coil. The first core and the second core cooperate to form a closed magnetic circuit. The first core has a contact surface cooled by the cooling device and a first magnetic leg extending for cutting with the contact surface and toward the second core. The second core has a second magnetic leg extending for cutting with the contact surface and toward the first core and arranged to be wrapped by the coil.

Light source device

Method of manufacturing optical transmission medium from synthetic resin

A method of manufacturing a multimode optical transmission medium from a synthetic resin having the distribution of refractive index varying continuously in a fixed direction. In the method, a monomer is polymerized while a transparent polymer for constituting the wall of a vessel is being dissolved into the monomer. Therefore, this method is free from the defect of methods using conventional polymerization reactions, and has an extremely high productivity.

Refractive index distribution type optical resin and production method thereof

A refractive index distribution type optical resin which comprises a non-crystalline fluorine-containing polymer and at least one kind of material having a refractive index differing from that of the polymer by at least 0.001. The material is distributed with a concentration gradient in a specific direction.

Substrate and metal layer manufacturing method

Surface light source device and asymmetrical prism sheet

(57)【要約】 【課題】 非対称プリズムシートを用いた面光源装置と 液晶ディスプレイ。 【解決手段】 反射体Ｒをかぶせた冷陰極管Ｌから指向 出射性の導光板１の光入射面２に光供給がなされる。裏 面６に沿って、反射体３が配置され、非対称プリズムシ ート４１の外側には偏光分離シートＬＳ、液晶パネルＬ Ｐが配置される。各非対称プリズム要素列の傾斜面４１ ａ、４１ｂの傾斜角φa 、φb は、前面５から出射され た主光線が第２傾斜面の内部反射でほぼ正面方向に偏向 され、且つ、その内側に第２傾斜面、第１傾斜面の２回 の内部反射後で正面方向に偏向される副光線が存在する ように選ばれる。外側面４１ｃはノングレア処理面、直 交プリズム面、レンズ面などで非平滑化される。外側面 ４１ｃの外側に、貼り付き防止処理を施した付加プリズ ムシート、レンズシートなどを配置しても良い。

Transparent article with radial refractive index gradient and process for its manufacture

The invention proposes a transparent article with a radial refractive index gradient comprising a matrix of a first transparent polymer material with a first refractive index n1, as well as a first Abbe number ξ1. A second transparent polymer material is diffused into the first polymer material to obtain the radial index gradient. The second material comprises a second refractive index n2, different from the first refractive index, as well as a second Abbe number ξ2. The invention is characterized in that it further comprises an effective quantity of a modification agent of the Abbe number, which lowers by at least 10 %, preferably 15 %, or better 20 % the value of the Abbe number of whichever of the first or second polymer materials has the lower refractive index. The application of the invention is the manufacture of contact lenses.

FLAT LIGHT SOURCE AND LIQUID CRYSTAL DISPLAY DEVICE

Method and apparatus for producing plastic optical fiber

A producing apparatus for producing a plastic optical fiber (11), in which a refractive index is distributed in a direction toward a center of a diameter (D1, D2), is provided. A first collection block (58) causes first and second molten resins (22, 23, 84, 85) together to flow to form a first multi layer fluid resin (22, 23) in a concentric fiber shape. A second collection block (59, 60) causes a third molten resin (21, 24) to flow together with the first multi layer fluid resin to form a second multi layer fluid resin (21-24) in a concentric fiber shape, so as to produce the plastic optical fiber from at least three resins. Also, the three resins contain a dopant at densities different from one another. Furthermore, a first diffusion tube (61) diffuses the dopant in the first multi layer fluid resin. A second diffusion tube (62, 63) diffuses the dopant in the second multi layer fluid resin.

Plastic optical fiber

Optical fiber and method for manufacturing same

Disclosed is an optical fiber wherein a monomer for a core portion contains trichloroethyl methacrylate as a main component, said trichloroethyl methacrylate being excellently transparent and very flexible. The optical fiber enables high-speed communication. Specifically disclosed is an optical fiber composed of a core portion and a cladding portion arranged around the core portion, wherein the core portion is mainly composed of a polymer of a monomer that contains not less than 70% by weight of trichloroethyl methacrylate (TCEMA) and the cladding portion is mainly composed of a polymer of a monomer that contains not less than 20% by weight of methyl methacrylate (MMA). Also specifically disclosed is an optical fiber composed of a core portion and a cladding portion arranged around the core portion, wherein the core portion is mainly composed of a polymer of a monomer that contains not less than 70% by weight of TCEMA and the outer circumference of the cladding portion is covered with a plastic that contains a polycarbonate as a main component.

Graded-refractive-index optical plastic material and method for its production

A graded-refractive-index optical plastic material composed of an amorphous fluoropolymer (a) which substantially has no C-H bond and at least one material (b) which differs from the fluoropolymer (a) in refractive index by at least 0.001, wherein the material (b) is distributed in the fluoropolymer (a) so as to have a concentration gradient in a specific direction.

Gas separation membranes based on perfluorinated polymers

Production of plastic optical element having refractive index distribution

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Transformer

【課題】巻線とスイッチング素子を容易に組み付けることができるトランスを提供する。 【解決手段】１次側巻線５２および１次側スイッチング素子５３が実装された第１の基板５０と、金属板のパターンによる２次側巻線が実装され、第１の基板５０と重ねた状態で配された第２の基板６０と、第１の基板５０と第２の基板６０との間に介在された絶縁シート７０と、を備える。 【選択図】図４

Plastic optical fiber and its manufacture

(57)【要約】 【課題】 光源、受光部との接続において集光部品を 要せず光の漏れも防止可能なプラスチックファイバーと その製法を提供すること。 【解決手段】 実質的にＣ−Ｈ結合を有しない非結晶 性の含フッ素重合体をマトリックスとする屈折率分布型 光ファイバーにおいて、該ファイバー端部の光透過部分 の径または断面形状がファイバー端部以外のファイバー 部分の光透過部分の径または断面形状と異なるプラスチ ック光ファイバー。

Hybrid integrated circuit device and manufacturing method thereof

In a manufacturing method of a hybrid integrated circuit device of the invention, transfer molding is carried put by positioning a curved surface formed in a back surface of the substrate on a lower mold die side and a burr formed in a main surface of the substrate on an upper mold die side. This utilizes the curved surface to inject thermosetting resin in an arrow direction to pour the thermosetting resin through a below of the substrate. There are no broken fragments of burr in a thermosetting resin at the below of the substrate. As a result, a required minimum resin thickness is secured at the below of the substrate, thus realizing a hybrid integrated circuit device having a high voltage resistance, an excellent heat dissipation property and a high product quality.

Multilayer printed circuit board and method for producing a multilayer printed circuit board

Diese mehrschichtige Leiterplatte (20) weist ein Isoliersubstrat (40), eine Innenschichtkupferplatte (50, 60) und eine Außenschichtkupferfolie (70, 80) auf. Die Innenschichtkupferplatte (50, 60) ist innerhalb des Isoliersubstrats (40) angeordnet und wurde bemustert. Die Außenschichtkupferfolie (70, 80) ist in einem bemusterten Zustand auf der Oberfläche des Isoliersubstrats (40) angeordnet, dünner als die Innenschichtkupferplatte (50, 60) und weist einen Strompfadquerschnitt auf, der kleiner als der Strompfadquerschnitt der Innenschichtkupferplatte (50, 60) ist. Als Ergebnis wird eine mehrschichtige Leiterplatte geschaffen, bei der ein großer Strom und ein kleinerer Strom fließen können, während gleichzeitig eine Erhöhung des hervorstehenden Bereiches des Substrats vermieden wird; und es wird ein Verfahren zum Herstellen der mehrschichtigen Leiterplatte geschaffen. This multilayer printed circuit board (20) has an insulating substrate (40), an inner layer copper plate (50, 60) and an outer layer copper foil (70, 80). The inner layer copper plate (50, 60) is disposed within the insulating substrate (40) and has been patterned. The outer layer copper foil (70, 80) is arranged in a patterned state on the surface of the insulating substrate (40), thinner than the inner layer copper plate (50, 60) and has a current path cross section which is smaller than the current path cross section of the inner layer copper plate (50, 60) . As a result, there is provided a multilayer circuit board in which a large current and a smaller current can flow while avoiding an increase in the protruding area of the substrate; and a method of making the multilayer printed circuit board is provided.