Abstract: A capacitor that includes: a substrate having a first principal surface and a second principal surface opposed to each other in a thickness direction, wherein the first principal surfaces includes a step in a plan view from the thickness direction; an insulating film on the first principal surface of the substrate; a first electrode layer on the insulating film and positioned within a boundary defined by the step in the plan view; a dielectric film on the first electrode layer; a second electrode layer on the dielectric film; a moisture-resistant film on the dielectric film and the second electrode layer; a protective layer on the moisture-resistant film; and an outer electrode penetrating through the protective layer.

Abstract: A motor according to an embodiment includes a stator. The stator includes a plurality of connection cores. The connection core includes a plurality of pieces connected via connection portions. The plurality of pieces are arranged in a circular arc shape. The plurality of connection cores are arranged in an annular shape.

Abstract: There is provided an actuator including a motor and a case adapted to house the motor. In the actuator, an output shaft of the motor is supported by a structured configured such that an elastic member is disposed between the case and at least one end of the output shaft, wherein the elastic member is in contact with a portion of the case in an engaging manner whereby the elastic member is prevented from shifting relative to the case in the rotation direction of the output shaft, and also wherein the elastic member is in contact with a portion of the motor in an engaging manner whereby a body of the motor is prevented from shifting relative to the elastic member in the rotation direction of the output shaft.

Abstract: A PM stepping motor includes: a stator assembly composed of two stator units which are axially coupled to each other with a molding resin material, and each of which includes: inner and outer yokes each having a plurality of pole teeth; a bobbin including inner and outer flanges; and a coil wound around the bobbin, thus providing two such inner yokes, outer yokes, bobbins and coils in total; a rotor assembly which includes a shaft and a magnet, and which is rotatably disposed in the hollow of the stator assembly; and two bearings to rotatably support the shaft of the rotor assembly, wherein the two bobbins are formed of the molding resin material to be consolidated with the two inner yokes, and wherein a plurality of protrusions are formed of the molding resin material to extend integrally from the outer flange of each of the two bobbins.

Abstract: There is provided an actuator including a motor and a case adapted to house the motor. In the actuator, an output shaft of the motor is supported by a structured configured such that an elastic member is disposed between the case and at least one end of the output shaft, wherein the elastic member is in contact with a portion of the case in an engaging manner whereby the elastic member is prevented from shifting relative to the case in the rotation direction of the output shaft, and also wherein the elastic member is in contact with a portion of the motor in an engaging manner whereby a body of the motor is prevented from shifting relative to the elastic member in the rotation direction of the output shaft.

Abstract: A stepping motor includes: a stator which includes a cup-like first (outer) yoke having a plurality of notches formed at its bottom plate, a second (inner) yoke, and a bobbin having a coil wound therearound and housed in the annular hollow space formed by the first and second yokes; and a pair of bearings each of which includes a hollow-cylindrical main body and a flange structure having a plurality of protrusions, and is attached to the stator such that the protrusions engage with the notches of the first yoke thereby preventing the bearing from rotating relative to the first yoke, and such that the protrusions make contact with a flange of the bobbin thereby precisely positioning the bearing relative to the first yoke with respect to the axial direction, which prohibits any portions of the bearing from protruding axially outwardly beyond the bottom plate of the first yoke.

Abstract: In a stepping motor including two stators and a rotor having two magnets, three dimensional relations, specifically a relation of Lm/Ls, another relation of d/2Lm, and still another relation d/D, are optimally determined while satisfying their respective ranges: 0.35?Lm/Ls?0.45; 0.77?d/2Lm?1.10; and d/D?0.45, where Lm is the axial dimension of the magnet, Ls is the axial dimension of the stator, d is the outer diameter of the magnet, and D is the outer diameter of the stator, whereby a space for accommodating a sufficient number of coil turns is secured maximally in the stator, and the inertia and the cogging torque of the rotor are reduced maximally, which leads to producing the highest possible torque at a high rotation speed range required.

Abstract: A stepping motor includes: a stator which includes a cup-like first (outer) yoke having a plurality of notches formed at its bottom plate, a second (inner) yoke, and a bobbin having a coil wound therearound and housed in the annular hollow space formed by the first and second yokes; and a pair of bearings each of which includes a hollow-cylindrical main body and a flange structure having a plurality of protrusions, and is attached to the stator such that the protrusions engage with the notches of the first yoke thereby preventing the bearing from rotating relative to the first yoke, and such that the protrusions make contact with a flange of the bobbin thereby precisely positioning the bearing relative to the first yoke with respect to the axial direction, which prohibits any portions of the bearing from protruding axially outwardly beyond the bottom plate of the first yoke.

Abstract: A PM stepping motor includes: a stator assembly composed of two stator units which are axially coupled to each other with a molding resin material, and each of which includes: inner and outer yokes each having a plurality of pole teeth; a bobbin including inner and outer flanges; and a coil wound around the bobbin, thus providing two such inner yokes, outer yokes, bobbins and coils in total; a rotor assembly which includes a shaft and a magnet, and which is rotatably disposed in the hollow of the stator assembly; and two bearings to rotatably support the shaft of the rotor assembly, wherein the two bobbins are formed of the molding resin material to be consolidated with the two inner yokes, and wherein a plurality of protrusions are formed of the molding resin material to extend integrally from the outer flange of each of the two bobbins.

Abstract: In a stepping motor including two stators and a rotor having two magnets, three dimensional relations, specifically a relation of Lm/Ls, another relation of d/2Lm, and still another relation d/D, are optimally determined while satisfying their respective ranges: 0.35?Lm/Ls?0.45; 0.77?d/2Lm?1.10; and d/D?0.45, where Lm is the axial dimension of the magnet, Ls is the axial dimension of the stator, d is the outer diameter of the magnet, and D is the outer diameter of the stator, whereby a space for accommodating a sufficient number of coil turns is secured maximally in the stator, and the inertia and the cogging torque of the rotor are reduced maximally, which leads to producing the highest possible torque at a high rotation speed range required.

Abstract: The invention provides a fine particle dispersion composition that does not depend on a curing method and that has adaptability to the curing methods and versatility and can provide a highly transparent optical component, an optical component using the fine particle dispersion composition and a method of manufacturing the same, and an optical film laminate using the optical component, and also provides a polarization splitting device using the optical component. In order to achieve the above, there is provided an optical component, which is obtained by curing a fine particle dispersion composition, which comprises metal-oxide fine particles, an organic resin material adapted to cure by absorbing energy, one of a polyoxyethylene alkyl ether phosphoric acid-based surfactant and a polyoxyethylene alkyl ether carboxylic acid-based surfactant, each of which has a molecular weight of 500 or more, and an organic solvent.

Abstract: There are provided an inexpensive polarizing beam splitter having a polarized light beam separating function of a wide range with a simple film construction and a reduced number of laminated film layers, and a polarizer provided with the polarizing beam splitter to arrange natural light into a specific polarized state.

Abstract: The invention provides a fine particle dispersion composition that does not depend on a curing method and that has adaptability to the curing methods and versatility and can provide a highly transparent optical component, an optical component using the fine particle dispersion composition and a method of manufacturing the same, and an optical film laminate using the optical component, and also provides a polarization splitting device using the optical component. In order to achieve the above, there is provided an optical component, which is obtained by curing a fine particle dispersion composition, which comprises metal-oxide fine particles, an organic resin material adapted to cure by absorbing energy, one of a polyoxyethylene alkyl ether phosphoric acid-based surfactant and a polyoxyethylene alkyl ether carboxylic acid-based surfactant, each of which has a molecular weight of 500 or more, and an organic solvent.

Abstract: An optical recording medium includes recording tracks located adjacently to each other and is provided on and/or from which information is recorded and/or reproduced by irradiating with a beam a predetermined track of those recording tracks. The track pitch between the adjacent recording tracks is adjusted so that the track pitch is made substantially equal to a distance between an intensity center of a beam spot on a laser beam irradiated plane of the medium and a location of an initial minimum intensity. By irradiating with a beam the predetermined track, therefore, the beam intensity is located around the center of the recording track that is adjacent to the minimum portion. This location results in reducing a crosstalk amount from the adjacent recording track to a minimum, thereby suppressing the loss of the crosstalk characteristic to a minimum. This makes it possible to enhance the recording density in the alignment direction of the recording tracks if an A/W in the optical system is 1.

Abstract: The present invention provides a rotor magnet with a claw pole type of actuator of a single phase structure and a magnetization method of the rotor magnet, in which detent and dynamic torques are sufficiently ensured, an angle range of rotational operation is wide, the cost is inexpensive and the characteristics are stable. In the actuator of such structure, the rotor magnet is rotatably arranged through a fine space inside an armature coil, wherein the rotor magnet comprises a single cylindrical type of magnet having a distribution pattern of a magnetic flux in which the magnetic pole peak position of at least one of the N and S poles is shifted stepwise in the axial direction thereof.

Abstract: An inexpensive, small, high-efficiency actuator having a single-phase claw pole structure permits easy assembly or winding and enables a rotor to act in a fixed direction by detent torque even in a deenergization mode.

Abstract: There are provided an inexpensive polarizing beam splitter having a polarized light beam separating function of a wide range with a simple film construction and a reduced number of laminated film layers, and a polarizer provided with the polarizing beam splitter to arrange natural light into a specific polarized state.

Abstract: A colorless antireflection film excellent in productivity and high in transparency, and an antireflection layer-affixed plastic substrate. An antireflection film and an antireflection layer-affixed plastic substrate having moisture-proofing and gas-barrier properties and being excellent in optical characteristics. An antireflection film comprising a hard coat layer formed on a substrate, and a transparent, high-refractive-index oxide layer and a transparent, low-refractive-index oxide layer alternately laminated on the hard coat layer. The transparent, high-refractive-index oxide layer is compose of a Nb2O5 layer formed by a reactive sputtering method. An antireflection film using a substrate consisting of an organic material, wherein an inorganic, moisture-proofing layer having a refractive index approximate to that of the organic material is formed in contact with one surface of the substrate.

Abstract: An optical recording medium includes recording tracks located adjacently to each other and is provided on and/or from which information is recorded and/or reproduced by irradiating with a beam a predetermined track of those recording tracks. The track pitch between the adjacent recording tracks is adjusted so that the track pitch is made substantially equal to a distance between an intensity center of a beam spot on a laser beam irradiated plane of the medium and a location of an initial minimum intensity. By irradiating with a beam the predetermined track, therefore, the beam intensity is located around the center of the recording track that is adjacent to the minimum portion. This location results in reducing a crosstalk amount from the adjacent recording track to a minimum, thereby suppressing the loss of the crosstalk characteristic to a minimum. This makes it possible to enhance the recording density in the alignment direction of the recording tracks if an A/W in the optical system is 1.

Abstract: An optical recording medium includes recording tracks located adjacently to each other and is provided on and/or from which information is recorded and/or reproduced by irradiating with a beam a predetermined track of the recording tracks. The track pitch between the adjacent recording tracks is adjusted so that the track pitch is made substantially equal to a distance between an intensity center of a beam spot on a laser beam irradiated plane of the medium and a location of an initial minimum intensity. By irradiating with a beam the predetermined track, therefore, the beam intensity is located around the center of the recording track that is adjacent to the minimum portion. This location results in reducing a crosstalk amount from the adjacent recording track to a minimum, thereby suppressing the loss of the crosstalk characteristic to a minimum. This makes it possible to enhance the recording density in the alignment direction of the recording tracks if an A/W in the optical system is 1.