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HITACHI MAXELL, LTD.

HITACHI MAXELL, LTD. Patent applications
Patent application numberTitlePublished
20120087227OPTICAL PICKUP LENS - An optical pickup lens for focusing a light beam from a laser light source on an optical information recording medium is a single lens. The optical pickup lens has two surfaces, and a surface R04-12-2012
20120087226OPTICAL PICKUP LENS - An optical pickup lens for focusing a light beam from a laser light source on an optical information recording medium is a single lens. The optical pickup lens has two surfaces, and a surface R04-12-2012
20120061608FUNCTIONAL PARTICLE WITH ROUGH-SURFACED POLYMER COATING - There is provided a magnetic particle to which a large amount of target substance can bind upon separation, analysis and the like of the target substance, the particle exhibiting a higher rate of the magnetic separation. The magnetic particle to which a target substance can bind, comprising a core particle having magnetism and a polymer coat layer comprising a polymer shell portion in which a rough coating of polymer is provided on a surface of the core particle. This magnetic particle has a roughness due to a surface roughness of the polymer shell portion wherein a specific surface area (m03-15-2012
20110317287DRIVE DEVICE, LENS PART, AND CAMERA MODULE - A drive device capable of engaging a drive shaft and a part holding the drive shaft with a suitable force without accompanying increase in the size of the drive device. The drive device includes a couple member with a piezoelectric element and a transmission shaft coupled together, a lens holder that holds a lens and to which the couple member is secured, a biasing member that biases the transmission shaft in a direction intersecting a placement direction of the transmission shaft viewed from the lens holder (excluding a lengthwise direction of the transmission shaft), and a link member (link body) that holds the transmission shaft in a slidable manner together with the biasing member.12-29-2011
20110273658POLARIZATION SPLIT ELEMENT AND METHOD FOR MANUFACTURING THE SAME - Grating grooves of a predetermined shape are filled with a polymerizable liquid crystal, and thereafter, the polymerizable liquid crystal is cured to form a striped structure including a uniaxial polymer liquid crystal having an alignment orientation identical to the longitudinal direction of the grating grooves, without using a liquid crystal alignment film. Consequently, it is possible to stably and effectively align the polymer liquid crystal without using an alignment film and to adjust the film thickness easily, whereby a polarization splitting element exhibiting a high and uniform split efficiently can be obtained stably.11-10-2011
20110256317Storage container, method for molding resin, and method for forming plating film - A storage container is provided, which includes carbon dioxide containing a functional material and a container body in which carbon dioxide has been hermetically contained. Accordingly, a method for molding a resin, a method for forming a plating film, and the storage container for carbon dioxide, which are excellent in the mass productively at low cost, are provided without using any special high pressure apparatus for producing a supercritical fluid.10-20-2011
20110242403DRIVE DEVICE, IMAGE ACQUISITION DEVICE, AND ELECTRONIC APPARATUS - A drive device in which the frequency of a drive waveform applied to a piezoelectric element is easily settable with less obligation to consider resonance in a stationary member. The device includes a piezo element that expands and contracts according to a drive voltage, a transmission shaft that receives vibration produced by the element, a stationary member that holds the transmission shaft in a slidable state along the longitudinal direction of the transmission shaft, and a lens holder that is displaced together with the piezo element and transmission shaft relative to the stationary member according to drive of the piezo element. The piezo element and the transmission shaft move in the moving direction of the lens holder in synchronization with the lens holder according to drive of the piezo element in the state where the piezo element is spaced from the stationary member. By employing this structure, the frequency of the drive waveform applied to the piezo element can be set easily without considering resonance in the stationary member.10-06-2011
20110216255POLARIZATION DIFFRACTION GRATING, METHOD FOR MANUFACTURING THE SAME, AND OPTICAL PICKUP APPARATUS USING THE POLARIZATION DIFFRACTION GRATING - A polarization diffraction grating that enables the polarization direction of incident light and the occurrence direction of diffracted light to be freely selected without being restricted by the material of a substrate is provided. A polarization diffraction grating includes a transparent substrate, a polymer liquid crystal layer that is adhered onto the transparent substrate via an adhesive layer, and that has a first concavity/convexity structure that diffracts incident light formed on a face opposite to the adhesive layer, and an optically isotropic material layer provided to fill the first concavity/convexity structure. A second concavity/convexity structure made up of a plurality of stripe grooves disposed parallel to each other is further formed on the face of the polymer liquid crystal layer on which the first concavity/convexity structure is formed, and liquid crystal molecules in the polymer liquid crystal layer are oriented in the groove lengthwise direction of the second concavity/convexity structure.09-08-2011
20110211438COLLIMATING LENS UNIT AND OPTICAL PICKUP DEVICE USING THE SAME - An optical pickup device that can reduce interlayer crosstalk, without changing the configuration of the optical system, and without excessively increasing the size of the optical system. The optical pickup device reproduces a signal from a multilayered optical information recording medium having a plurality of information recording layers. The optical pickup device uses a collimating lens unit as a collimating optical system that collimates light from a light source, and the collimating lens unit includes a first and second lens group arranged at a predetermined distance from each other so as to form a converged light spot in the interior of the collimating lens unit, and an optical element provided between the first lens group and the second lens group so as to form a light spot at a position defocused from the position of the converged light spot, thereby decreasing quantity of light passing through the collimating lens unit.09-01-2011
20110158079OPTICAL PICKUP LENS - An optical pickup lens for focusing a light beam from a laser light source on an optical information recording medium is a single lens. The optical pickup lens has two surfaces, and a surface R06-30-2011
20110157521LIQUID CRYSTAL DISPLAY - A liquid crystal display according to the present invention includes a light source, an optical control member, and a liquid crystal display panel. Said optical control member includes a base having optical transparency and a plurality of linear structures provided on said base, a section of the linear structure orthogonal to its extending direction includes a first sectional portion having a triangular shape defined by first to third sides, and a second sectional portion having a plurality of triangular structures each having a smaller area than the first sectional portion and defined by fourth to sixth sides, the first side of the first sectional portion is abutted on and parallel to a surface of said base, the second sectional portion is provided on the second side of the first sectional portion, and the fourth side of the second sectional portion is abutted on and parallel to the second side of the first sectional portion. Said liquid crystal display panel having a polarizing plate arranged in a direction to transmit a P-polarized component is provided on the side of the light output surface of said optical control member. Therefore, the liquid crystal display according to the present invention can solve the problems of color separation and insufficient luminance.06-30-2011
20110151281MAGNETIC RECORDING MEDIA - A magnetic recording medium which has a non-magnetic substrate and a magnetic layer formed on the non-magnetic substrate, in which the magnetic layer contains magnetic powder with a particle size of 40 nm or less and a binder, an autocovariance length Ma of the magnetic layer in its lengthwise direction is 70 nm or less, an autocovariance length Mb of the magnetic layer in its widthwise direction is 80 nm or less, and a ratio Ma/Mb is from 0.80 to 1.20.06-23-2011
20110142296BIOMETRIC INFORMATION ACQUISITION APPARATUS, BIOMETRIC AUTHENTICATION APPARATUS, LIGHT GUIDE, AND IMAGE ACQUISITION APPARATUS - A biometric information acquisition apparatus includes: a light guide that guides a light beam through a plurality of light reflective surfaces; and an image pickup unit that receives the light beam output from the light guide and captures a subject image. The light guide includes an input surface that receives the subject image and is provided at a front surface side; a first light reflective surface that is opposed to the input surface and is provided at a back surface side; and a second light reflective surface that extends in a thickness direction of the light guide. A subject image can be acquired within a desired range by employing the light guide, while suppressing an increase in size of the biometric information acquisition apparatus.06-16-2011
20110104380METHOD FOR PRODUCING MOLDED ARTICLE - The present invention provides a method for producing a molded article which enables dissolution of a desired amount of a subject material in a molten resin without any limitation by the solubility of a high-pressure carbon dioxide in the molten resin and which is therefore suitable for commercial production of molded articles. The present invention pertains to a method for producing a molded article by molding a molten resin, and this method is characterized by including steps of supplying a high-pressure carbon dioxide and a subject material dissolved therein, into the molten resin; kneading the molten resin into which the high-pressure carbon dioxide and the subject material have been supplied; and exhausting the high-pressure carbon dioxide from the kneaded molten resin.05-05-2011
20110085432GRATING ELEMENT, OPTICAL PICKUP OPTICAL SYSTEM AND METHOD OF DESIGNING GRATING ELEMENT - A grating element is provided with diffraction members wherein protrusions and recesses are periodically arranged, respectively, on one surface of each of transparent substrates. The diffraction members are laminated in the substantially perpendicular direction to the transparent substrates, the protrusions of the diffraction members are made of a dielectric multilayer film, and the dielectric multilayer film has dielectric films of two or more types laminated in the substantially perpendicular direction on the transparent substrates. The wavelengths of laser beams diffracted at predetermined diffraction efficiencies by the diffraction members are different from one another.04-14-2011
20110063739LENS UNIT, CAMERA MODULE AND MANUFACTURING METHOD OF LENS UNIT - To implement the alignment of lenses with a simple configuration or by a simple method. A lens unit includes a plurality of lenses each including a lens portion and a flange portion surrounding the lens portion, and a tube portion that holds the plurality of lenses successively arranged along an optical axis. The holder body includes first and second receive portions successively formed along the optical axis. The first receive portion holds the lenses by pressing the side of the flange portion that extends along the optical axis. The second receive portion receives the lens such that the lens can be moved in a direction crossing the optical axis.03-17-2011
20110013291OPTICAL PICKUP LENS - An optical pickup lens for focusing a light beam from a laser light source on an optical information recording medium is a single lens. The optical pickup lens has two surfaces, and a surface R01-20-2011
20110008216HYDROGEN GENERATOR - A hydrogen generator of the present invention has a vessel for containing a hydrogen generating material including a metallic material for generating hydrogen by an exothermic reaction with water. The vessel includes a water supply pipe for supplying water into the vessel and a hydrogen outlet for discharging hydrogen generated in the vessel to the outside of the vessel. In the hydrogen generator, a wall surface of the vessel facing the hydrogen outlet is set as a reference plane, a water supply port at the end of the water supply pipe disposed inside the vessel is disposed in the vicinity of the reference plane, the water supply pipe includes a perpendicular portion extending from the vicinity of the center of the reference plane in a direction perpendicular to the reference plane, and a water absorbent is disposed on the periphery of the perpendicular portion of the water supply pipe and not disposed on a portion of 15% or more of an effective length of the perpendicular portion on the hydrogen outlet side.01-13-2011
20100320635METHOD FOR PRODUCING POLYMER MEMBER HAVING PLATED FILM - To provide a method for producing a polymer member having a plated film with excellent adhesion by subjecting a polymer member in which a catalyst component is dispersed by using pressurized carbon dioxide to electroless plating under ordinary pressure. A polymer member in which a catalyst component is dispersed is formed by using a pressurized fluid in which a catalyst component containing a metal which serves as a plating catalyst is dissolved in pressurized carbon dioxide; the polymer member in which the catalyst component is dispersed is immersed in an alcohol treatment liquid under ordinary pressure; and the polymer member, which has been subjected to the pretreatment with the alcohol treatment liquid, is immersed in an electroless plating solution containing an alcohol under ordinary pressure to form a plated film.12-23-2010
20100315934Plastic lens, manufacturing method thereof, production tracing management method thereof, and optical pickup device - A lens has a flange part at the outer periphery of its surface. A flange surface of the flange part is higher than the lens surface. The flange surface has a marking to identify a production jig, for example.12-16-2010
20100266771Method of producing molded article - The present invention provides a method of producing a molded article, which can be perform the continuous processes and effectively impregnate a modifying material such as metal complexes in the thermoplastic resin for short period of time. The above object is achieved by providing the method of producing the thermoplastic resin molded article which includes impregnating the pressurized fluid having a modifying material dissolved therein, in thermoplastic resin; discharging the pressurized fluid from the thermoplastic resin in which the modifying material has been impregnated; and continuously molding the thermoplastic resin, in which the modifying material has been impregnated and from which the pressurized fluid has been discharged, into the form of a film.10-21-2010
20100227201MAGNETIC RECORDING MEDIUM - A magnetic recording medium having a nonmagnetic substrate, and a soft magnetic layer and a ferromagnetic layer having a thickness of 5 to 150 nm formed in this order on the nonmagnetic substrate, in which, the ferromagnetic layer contains a spherical, ellipsoidal or plate-form ferromagnetic powder and a binder, and has an axis of easy magnetization substantially in a perpendicular direction, and the soft magnetic layer contains a spherical or ellipsoidal magnetite soft magnetic powder having a particle size of 30 nm or less, a rate of variation in particle size of 20% or less and a saturation magnetization of 10 to 60 Am09-09-2010
20100221965SLURRY FOR FORMING INSULATING LAYER, SEPARATOR FOR ELECTROCHEMICAL DEVICE, METHOD FOR PRODUCING THE SAME, AND ELECTROCHEMICAL DEVICE - A slurry for forming an insulating layer of the present invention includes heat-resistant insulating fine particles, a thickening agent, and a dispersion medium. The insulating fine particles are dispersed in the dispersion medium. The slurry for forming an insulating layer has a viscosity of 5 to 500 mPa·s. The proportion of particles with a particle size of 1 μm or less in the insulating fine particles is 30 vol % or more and the proportion of particles with a particles size of 3 μm or more in the insulating fine particles is 10 vol % or less. An electrochemical device of the present invention includes a separator for an electrochemical device of the present invention that is produced using the slurry for forming an electrochemical device of the present invention.09-02-2010
20100195220Optical pickup lens - An optical pickup lens for focusing a light beam from a laser light source on an optical information recording medium is a single lens. The optical pickup lens has two surfaces, and a surface R08-05-2010
20100183943MEMBRANE ELECTRODE ASSEMBLY AND POLYMER ELECTROLYTE FUEL CELL - In a membrane electrode assembly of the present invention, at least one of a catalyst layer of an oxygen electrode and a catalyst layer of a fuel electrode includes a supported catalyst supporting a metal catalyst containing a platinum group element, a proton conductive polymer electrolyte, and at least one selected from (a) a complex-forming agent having a ligand that forms coordinate bonds with ions of the platinum group element and forms a complex, the ligand containing oxygen as a coordinating atom, (b) a complex of the platinum group element, a ligand of the complex containing oxygen as a coordinating atom, and (c) carbon that has a BET specific surface area of 100 m07-22-2010
20100141734Imaging apparatus and optical axis correction method of imaging apparatus - An imaging apparatus includes a plurality of imaging units each having a lens and an image pickup device. At least one of the imaging units is a wide-angle imaging unit having a lens with a wider angle of view, and at least another one is a zoom imaging unit having a lens with a narrower angle of view and a higher magnification and mounted rotatably to the imaging apparatus. The imaging apparatus includes a driving unit that rotates the zoom imaging unit to change an imaging range of the zoom imaging unit, an image comparison unit that compares a partial image of a wide-angle image captured by the wide-angle imaging unit and a magnified image captured by the zoom imaging unit, and an optical axis information update unit that updates optical axis information of the zoom imaging unit based on a comparison result of the image comparison unit.06-10-2010
20100118688Optical pickup lens - An optical pickup lens for focusing a light beam from a laser light source on an optical information recording medium is a single lens. The optical pickup lens has two surfaces, and a surface R05-13-2010
20100065990PRODUCTION METHOD AND PRODUCTION APPARATUS FOR POLYMER MEMBER - To provide a production method for producing a polymer member in which a pressurized fluid containing a modifying material is introduced more easily and stably into a molten resin in an injection molding machine. This task is solved by providing a production method, for producing a polymer member by using an injection molding machine provided with a mold and a heating cylinder, the method including: introducing, into a molten resin in a heating cylinder, a pressurized fluid containing a modifying material, liquid carbon dioxide, and a liquid in which the modifying material is dissolvable while controlling a flow rate of the pressurized fluid by a cylinder; and injecting the molten resin, into which the pressurized fluid is introduced, into the mold to form the polymer member in which the modifying material is contained in a surface of the polymer member.03-18-2010
20100062215Component having through-hole and method of manufacturing component - In accordance with an exemplary aspect of the present invention, a method of manufacturing a component includes forming a resin block by a resin molding method such that a peripheral region including a region where a through-hole is formed is formed as a convex portion in one of front and back surfaces, and the other surface has a hole in a region where the through-hole is formed, removing the convex portion so that the hole completely penetrates the resin block, forming a conductive film on an exposed surface of the resin block, and electrically connecting conductive films formed on the front and back surfaces of the resin block.03-11-2010
20100035088MAGNETIC TAPE AND METHOD FOR PRODUCING THE SAME - A magnetic tape produced by cutting a magnetic sheet with a wide breadth into a tape having a predetermined width using a cutting device, in which the magnetic sheet has a magnetic layer containing magnetic powder and a binder formed on one surface of a non-magnetic substrate having a thickness of 4 μm or less, and a center line average height (Ra) along a roughness curve of a cut edge of the magnetic tape is from 0.08 to 0.25 μm.02-11-2010
20100035086IRON NITRIDE MAGNETIC POWDER AND MAGNETIC RECORDING MEDIUM COMPRISING THE SAME - A spherical or ellipsoidal iron nitride magnetic powder having a core comprising iron nitride including a Fe02-11-2010
20100033849PRODUCTION METHOD OF OPTICAL ELEMENT, OPTICAL ELEMENT FORMING MOLD AND OPTICAL ELEMENT - An optical element being high in productivity and capable of ensuring a large bonding area, and a production method of the optical element. At mold opening when a top part (02-11-2010
20100026870Image pickup device having display function and mobile communication terminal - In an image pickup device, an image receiving surface is divided into a plurality of unit areas. The image pickup device establishes a predefined unit area as a light transmission area based on electrical control, receives externally-incoming light through this established unit area, and takes an externally-incoming image based on the externally-incoming light. Further, the image pickup device establishes a predefined unit area as a light transmission area based on electrical control, and displays an image by externally outputting light through this established unit area.02-04-2010
20100025880PROCESS FOR PRODUCING RESIN MOLDED ARTICLE - There is disclosed a process for producing a resin molded article by using a resin into which fine metal particles are so introduced as to be hardly dissolved at the melting temperature of the resin and as to obtain high solubility in a high-pressure carbon dioxide. This process comprises the steps of forming a high-pressure fluid by dissolving, in a high-pressure carbon dioxide, a fluorine-containing metal complex and a fluorine-based solution capable of dissolving the same metal complex; introducing the high-pressure fluid into a heated and molten resin; and molding the resin having the high-pressure fluid introduced thereinto, to shape the molded article.02-04-2010
20100002315Resin lens and method of molding resin lens - A resin lens includes an optical functional section that has an optical function, and a flange section that is formed around the optical functional section. A reference face is used as reference during positioning and fixing, and is formed on one face of the flange section. The face on which the reference face is formed is molded by an insert that mainly forms the optical functional section and a holder that mainly forms the flange section, during molding. The reference face of the flange section and an optical functional face that is the face of the optical functional section facing the reference face are molded by the insert, and a face of the flange section that is closer to the outer periphery than the reference face of the flange section is molded by the holder.01-07-2010
20090296049PROJECTION DISPLAY DEVICE - A projection display device includes a three-color LED source having a red LED, a green LED and a blue LED, a light pipe for making uniform illumination distribution of light emitted from the three-color LED source, an optical lens for making the light from the light pipe into parallel light, and a light modulation element for modulating the light from the optical lens. The optical lens includes a first toroidal lens element provided with a first entrance face on which the light whose angle with respect to an optical axis is a predetermined angle is incident to image the light, and a first exit face which emits the light incident from the first entrance face, and a second lens element provided with a second entrance face which is adjacently disposed to the first exit face in an optical axis direction.12-03-2009
20090285080PICKUP LENS WITH PHASE COMPENSATOR AND OPTICAL PICKUP APPARATUS USING THE SAME - A pickup lens with a phase compensator is composed of a condenser lens and a phase compensator. At least one surface of the condenser lens has a step-like annular zone structure to compensate wavefront aberration generated when recording and reproducing data on an information recording medium having a substrate thickness of t11-19-2009
20090279197SERVO SIGNAL RECORDING APPARATUS - A servo signal recording apparatus of the present invention is provided with a tape motion measurement unit 11-12-2009
20090257338Optical pickup objective lens, optical pickup apparatus and optical disc apparatus - A pickup lens has a plurality of ring zones on at least one surface, and steps are formed respectively between the plurality of ring zones. The plurality of steps have step differences causing laser light to have a phase difference to reduce aberration occurring in the pickup lens due to a change in ambient temperature. Further, when a numerical aperture of the pickup lens is NA, a focal length is f (mm) and a working distance is WD (mm), the pickup lens is fabricated to satisfy NA=0.85, 1.1=f=1.8 and WD=0.3.10-15-2009
20090232362BIOMETRIC INFORMATION ACQUISITION APPARATUS AND BIOMETRIC AUTHENTICATION APPARATUS - A biometric information acquisition apparatus includes a light illuminator to illuminate a subject with light at least over a range corresponding to a pixel arrangement region where a plurality of pixels to receive light from the subject are arranged, and an imager placed on the same plane as the light illuminator and including the pixel arrangement region where the plurality of pixels are arranged.09-17-2009
20090161920Biometric information acquisition apparatus, image acquisition apparatus, and electronic equipment - A biometric information acquisition apparatus includes a sensor that includes at least one pixel row formed from a plurality of pixels, and a drive mechanism that moves the sensor in a direction intersecting a pixel arrangement direction of the pixel row.06-25-2009
20090153983Imaging lens unit and camera module - An imaging lens unit includes, from an object side, a diaphragm, a first lens, and a second lens placed on an image side of the first lens. The first lens is a positive meniscus lens convex toward the object side, and at least one side of the first lens has an aspherical surface. The second lens is a meniscus lens convex toward the image side, and at least one side of the second lens has an aspherical surface. Further, a maximum value of an angle between a tangent to a surface on the image side of the second lens and a normal to an optical axis is in a range of 65° to 90° within an effective diameter of the second lens.06-18-2009
20090141604Optical disk, method for producing the same, and recording and reproducing apparatus - An optical disk includes a first area on which user information is recorded, and a second area in which a plurality of marks radially extending are arranged in a track direction in the optical disk. Information about the reflectance of the optical disk is recorded in the second area. It is intended to optimize the amplification factor of the reproduced signal on the basis of the information about the reflectance of the optical disk in the second area. Control data and user data can be reproduced quickly and highly reliably without depending on the relationship between the reflectances of a recording area and a non-recorded area of the optical disk.06-04-2009
20090110964BATTERY PACK - A battery pack that allows a cover to be firmly fixed with a simple structure and that has superior impact resistance is provided. The battery pack is a battery pack 04-30-2009
20090109830Optical pickup lens - An optical pickup lens includes a first surface to focus laser light for recording/playback on an optical disc, a second surface formed outside the first surface and radiated with laser light for lens tilt detection, and an antireflection coating to transmit the laser light for recording/playback, the antireflection coating being continuously formed on the first surface and a second surface.04-30-2009
20090092875FUEL CELL, MEMBRANE ELECTRODE ASSEMBLY - An acid resistant composite catalyst comprising dumbbell-shaped composite nanoparticles each comprising a noble metal nanoparticle epitaxially conjugated to a ferrite particle, and/or flower-shaped composite nanoparticles each comprising a noble metal nanoparticle epitaxially conjugated to at least two ferrite particles. The acid resistant composite catalyst is useful to facilitate the reduction of oxygen. The acid resistant composite catalyst can be used in a fuel cell comprising a fuel electrode, an oxygen electrode, and a polymer electrolyte membrane placed between the fuel electrode and the oxygen electrode. The oxygen electrode includes the acid resistant composite catalyst.04-09-2009
20090092860BATTERY PACK - A battery pack has a unit cell including a battery case having an opening and made of metal and including a sealing plate closing and sealing the opening of the battery case and made of metal, a circuit board having a safety circuit, and a holding member holding the circuit board, and employs a structure in which at least part of the holding member is fixed to the unit cell by laser welding. By the employment of such a structure, the battery pack can be provided in which the holding member holding the circuit board can reliably be fixed to the unit cell and of which total cost can be reduced by saving of labor of assembly that is achieved by simplification of a structure for fixing the holding member to the unit cell.04-09-2009
20090080196Lighting apparatus, lighting method, lighting system and surface information acquisition apparatus - A lighting apparatus includes a light source and a light beam separating member to separate light emitted from the light source into at least two different directions. The light beam separating member has a light incident plane on which light emitted from the light source is incident and a light output plane from which the light is output after being transmitted through the light beam separating member. In this structure, output light from the light beam separating member is clearly separated. Further, output light from the light beam separating member has characteristics that an angular width of each separated light beam is narrow.03-26-2009
20090078873Image acquisition apparatus, conversion apparatus and image acquisition method - An image acquisition apparatus acquires an image indicating an intensity distribution of infrared light. The image acquisition apparatus includes a conductive thin film, a dielectric layer placed on the thin film, a base to support the thin film and the dielectric layer in this order on a principal surface, a light source to emit light to an interface between the thin film and the base, and an image pickup device to receive light reflected on the interface between the thin film and the base.03-26-2009
20090047578POSITIVE ELECTRODE FOR ALKALINE BATTERY AND ALKALINE BATTERY USING THE SAME - A positive electrode for an alkaline battery of the present invention includes a spinel-type manganese oxide as a positive electrode active material, wherein the spinel-type manganese oxide has a potential of 0.26 to 0.34 V with respect to a Hg/HgO reference electrode, and the content of the spinel-type manganese oxide in the entire positive electrode active material is not less than 30 mass %. Further, an alkaline battery of the present invention includes the above-described positive electrode for an alkaline battery of the invention, a negative electrode and an electrolyte.02-19-2009
20090042063MAGNETIC RECORDING MEDIUM - A magnetic recording medium comprising a nonmagnetic substrate, and a soft magnetic layer and a ferromagnetic layer formed in this order on the nonmagnetic layer, in which the ferromagnetic layer has a thickness of from 3 to 150 nm, contains spherical, ellipsoidal or plate-form ferromagnetic particles and a binder, and has an axis of easy magnetization substantially in the vertical direction, and the soft magnetic layer contains spherical or ellipsoidal Fe—Co-containing soft magnetic particles having a saturation magnetization of from 170 to 220 Am02-12-2009
20090040656MAGNETIC TAPE APPARATUS - A magnetic tape apparatus includes a feeding unit for feeding a magnetic tape; a take-up unit for taking up the magnetic tape, a magnetic head disposed the downstream of the feeding unit and the upstream of the winding unit, in a traveling path of the magnetic tape from the feeding unit to the take-up unit, and having the moving magnetic tape abut to the magnetic head; a fixed guide unit disposed adjacent to the magnetic head at least in the upstream on downstream of the traveling direction of the magnetic tape traveling on the traveling path toward the magnetic head and guiding the magnetic tape to the traveling path by abutting to the magnetic tape; and a controlling unit disposed on the fixed guide unit for controlling the movement of the magnetic tape in the tape width direction. On a contact surface which abuts on the magnetic tape in the fixed guide unit, there is provided a space for excluding the air lying between the moving magnetic tape and the contact surface.02-12-2009
20090040630Imaging lens unit - An imaging lens unit comprising, in order from the object side, a first lens having a meniscus shape with its convex surface on the object side, an aperture stop and a second lens having a meniscus shape with its convex surface on the image side. A maximal value of a tangent angle within a range of a lens surface effective diameter of the surface on the object side of the first lens is 70 to 90 degrees. A maximal value of a tangent angle within a range of a lens surface effective diameter of the surface on the image side of the second lens is 70 to 90 degrees.02-12-2009
20090016186TAPE DEVICE - A cleaning structure for removing dust is constituted of a guiding member having a sliding surface for guiding run of a tape, and a vacuum pressure supply source for making a vacuum pressure effect on a suction space provided inside the guiding member and so on. At the sliding surface of the guiding member, a suction port for making the suction space communicate with an external space is formed, and the opening edge of the suction port on the downstream side in the tape running direction is served as a first dust removal portion for removing dust on the tape surface. The guiding member has a guiding wall having a contact surface which guides at least one tape edge of a tape, and the contact surface is served as a second dust removal portion for removing dust adhering to the tape edge.01-15-2009
20090011239ZIRCONIUM OXIDE HYDRATE PARTICLES AND METHOD FOR PRODUCING THE SAME - The zirconium oxide hydrate particles of the present invention are represented by the formula ZrO01-08-2009
20090008809Plastic lens, manufacturing method thereof, production tracing management method thereof, and optical pickup device - A lens has a flange part at the outer periphery of its surface. A flange surface of the flange part is higher than the lens surface. The flange surface has a marking to identify a production jig, for example.01-08-2009
20080316623LENS MODULE, CAMERA MODULE, AND METHOD OF MANUFACTURING CAMERA MODULE - There are provided first and second lenses, by which light incident from outside is condensed and caused to outgo, a barrel, which holds the first and second lenses, a barrel holding part having a substantially cylindrical shape to hold therein the barrel, a movement device for movement of the barrel holding part in an optical axis direction of the first and second lenses, and a pedestal having a lens receiving portion, which receives therein the barrel holding part in a slidable state, the pedestal receiving therein the barrel holding part contacting in plural lines with an inner wall surface of the lens receiving portion of the pedestal.12-25-2008
20080297699OPTICAL ADJUSTING MEMBER AND ILLUMINATION DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE INCLUDING THE SAME - An optical adjusting member according to the invention includes a base member having optical transparency and a plurality of linear members provided on the base member and having optical transparency. A section of the linear member orthogonal to the lengthwise direction of the linear member includes a triangular first sectional part defined by first to third sides and an approximately triangular second sectional part. The second sectional part has a smaller area than that of the first sectional part and defined by fourth to sixth sides. The first side of the first sectional part is in contact with the surface of the base member. The second sectional part is formed on the second side of the first sectional part, and the fourth side of the second sectional part is in contact with the second side of the first sectional part.12-04-2008
20080296793Lighting apparatus and display apparatus - The lighting apparatus includes a light source, a housing that contains the light source inside and has an exit port for outputting light from the light source, and an optical sheet that is placed in the exit port. The optical sheet includes a lens structure that is placed at a light exit side and aligns an output direction of incident light from the light source, a reflector that is placed at a light incident side and reflects light emitted by the light source, and a light transmitting opening that exists in the reflector and transmits incident light from the light source. The light transmitting opening is placed in a position deviated from an optical axis of the lens structure. The display apparatus includes the lighting apparatus.12-04-2008
20080279083OBJECTIVE LENS DESIGN METHOD, LENS, AND OPTICAL SYSTEM, OPTICAL HEAD, AND OPTICAL DISC APPARATUS USING THE SAME - When the DVD provided with the DVD substrate 11-13-2008
20080260985Information-recording medium - An information-recording medium includes first and second recording layers each of which is formed of a phase-change material containing Bi, Ge, and Te, wherein the first recording layer is arranged nearer to a light-incident side of the laser beam than the second recording layer; a composition of Bi, Ge, and Te contained in the second recording layer is within a composition range surrounded by composition points B10-23-2008
20080259490MAGNETIC TAPE DRIVING APPARATUS - A magnetic tape driving apparatus of the present invention includes a support member for separating a magnetic tape from a magnetic head on at least one of a tape input side and a tape output side of the magnetic head. The support member separates the magnetic tape from the magnetic head at least when a tape driving portion causes the magnetic tape to start running and/or to stop running. With this configuration, the magnetic tape driving apparatus does not suffer from damage to the magnetic head and the magnetic tape when the magnetic tape makes a transition from the stopped state to the running state and vice versa or changes in the running direction.10-23-2008
20080259248Multilens member, illumination apparatus, and liquid crystal display apparatus - A multilens member is provided, the multilens member including a base member which has light transmissivity; a plurality of first lenses which are formed on the base member; and a plurality of second lenses which are formed on the plurality of first lenses and which are joined to the plurality of first lenses on first surfaces opposed to the base member; wherein the first surfaces of the second lenses have junction which are joined to the first lenses and overhang which overhangs outwardly from the junction portions. That is, the multilens member having the overhang shape is provided. Accordingly, it is possible to provide the optical member which improves the optical performance of an illumination apparatus and which realizes the thin size and the low cost of the illumination apparatus and a liquid crystal display apparatus.10-23-2008
20080248384FLAT-SHAPED BATTERY - A flat-shaped battery of the present invention includes an outer can that is open upward, a sealing can that is open downward, and a gasket that is placed between the outer can and the sealing can to seal the space between them. The outer can includes a base plate and a cylindrical surrounding wall. The surrounding wall of the outer can includes a straight portion that extends upward and perpendicular to the base plate. The sealing can includes a housing in the form of an inverted dish, a flange that projects outward from a lower end of the opening of the housing, and a single outer surrounding wall that extends downward from an outside edge of the flange so as to be perpendicular to the flange. The outer surrounding wall of the sealing can is arranged perpendicular to the base plate of the outer can. The gasket includes a base that receives a lower end of the outer surrounding wall of the sealing can, and an outer cylindrical wall that extends upward from the base and is disposed between the surrounding wall of the outer can and the outer surrounding wall of the sealing can. The surrounding wall of the outer can has a curved edge such that the surrounding wall at the opening of the outer can is bent toward an axis of the outer can and positioned laterally with respect to the outer surrounding wall of the sealing can. The curved edge presses an upper end of the outer cylindrical wall of the gasket against an upper end of the outer surrounding wall of the sealing can.10-09-2008
20080241669FLAT-SHAPED BATTERY - The flat-shaped battery includes an electrode material containing an active material, and a battery case which has the electrode material housed inside and in which a plurality of protruding members extending inwardly from an inner surface of the battery case are fixed to the inner surface. The electrode material is housed in the battery case with those individual protruding members inserted in the electrode material. As a result, even if the flat-shaped battery is subjected to such external influences as accelerations and vibrations, the electrode material can securely be prevented from moving within the battery case.10-02-2008
20080241514Method for forming plating film, polymer member, and method for producing the same - A method for forming an electroless plating film on surfaces of various types of polymer members is provided, the electroless plating film being formed economically with high adhesion strength. The method for forming the plating film on the polymer member comprises preparing a polymer member including a metal substance, in an internal portion of the polymer member, which serves as plating catalyst cores, the polymer member having a surface on which the plating film is to be formed and which is inactive to the electroless plating solution at an atmospheric pressure; and forming the plating film on the surface of the polymer member by bringing the polymer member in contact with the electroless plating solution to which the pressurized carbon dioxide has been added.10-02-2008
20080241307IMPRINTING JIG AND IMPRINTING APPARATUS - The invention provides an imprinting jig for transferring a pattern onto a thermoplastic sheet. The imprinting jig is provided with: a first die having a surface with a pattern; a die holder for supporting the first die; an elastic member placed between the first die and the die holder; and a second die opposing to the first die. The thermoplastic sheet is placed on the surface with the pattern of the first die. The imprinting jig optionally includes an adhesion reducing means between the elastic member and the first die or between the elastic member and the die holder.10-02-2008
20080220291METHOD FOR PREPARING MAGNETIC PAINT AND MAGNETIC RECORDING MEDIUM COMPRISING THE SAME - A magnetic paint is prepared by a method comprising a surface-treating step for magnetic powder, to obtain a first composition by mixing and stirring a composition which comprises a magnetic powder, a dispersant and/or a binder resin, and an organic solvent, and which contains 40% by weight or less of a non-solvent component, while applying a shear force to the composition; and a concentrating step to obtain a second composition by concentrating the first composition until the content of the non-solvent components of the first composition reaches 80% by weight or more.09-11-2008
20080212198Molded lens and molding tool - A lens is manufactured by hardening soft material filled inside a molding tool by cooling. The lens includes a convex lens portion having an optical axis, and a marking portion located outside of an effective diameter of the lens portion. The shape or the position of the marking portion is set to prevent deformation of the marking portion by contact with the molding tool due to shrinkage of the material during cooling.09-04-2008
20080205711Biometric information acquisition device - A biometric information acquisition device for acquiring biometric information of a biological portion includes a light emitter to emit an inspection light, a light guide to guide the inspection light from a light incident surface thereof to a light exit surface thereof and to output the guided inspection light to the biological portion through the light exit surface, and an imager to acquire an image by receiving the inspection light from the biological portion, wherein the light output through the light exit surface of the light guide has a substantially equal intensity in a longitudinal direction of the light exit surface.08-28-2008
20080197231TAPE CARTRIDGE - A tape cartridge has a reel having an external peripheral surface and a tape wound around the external peripheral surface of the reel. The peripheral surface has a shallow recess defined therein and extending in a peripheral direction of the reel. The recess is extended in a direction opposite a tape winding direction from a first point to a second point away from the first point. The recess is defined by an end wall extending inwardly from the first point to a third point away from the first point and a height substantially the same as a thickness of the tape. The recess also has a bottom wall extending peripherally from the third point to the second point and having a depth decreasing in proportion to a distance from the third point toward the second point. The portion of the tape is positioned in the recess so that the end wall abuts or opposes the end portion of the tape.08-21-2008

Patent applications by HITACHI MAXELL, LTD.