[Problem] To provide a current measurement device that makes it possible to achieve high-frequency current measurement and to perform current measurement for devices that operate at higher switching frequencies, without using a division means. [Solution] According to the present invention, a current measurement device includes an optical fiber for a sensor, a light source, two variable optical attenuators, and a signal processing circuit that comprises two photoelectric conversion elements. The signal processing circuit comprises the two photoelectric conversion elements and a current/voltage conversion circuit. The two photoelectric conversion elements are connected in series. An optical signal is inputted into the variable optical attenuators then into the two photoelectric conversion elements and converted to a first photocurrent and a second photocurrent. The photocurrents are fed back to the variable optical attenuators, the amount of light that is inputted into the two photoelectric conversion elements is adjusted, and the DC components of the photocurrents are equalized. At the same time, the difference in the photocurrents is inputted into the current/voltage conversion circuit, the DC components of the photocurrents are offset, the AC components are outputted as a difference, and a current to be measured that is flowing in a conductor is converted to an electrical signal and measured.
2323x(1-x)2323x(1-x)x(1-x)232323233-based single crystal grown through an induction heating type single crystal growing method, the warpage amount of the main surface being -50 μm to 50 μm (including 0 μm).
C30B 15/34 - Edge-defined film-fed crystal growth using dies or slits
H01L 21/205 - Deposition of semiconductor materials on a substrate, e.g. epitaxial growth using reduction or decomposition of a gaseous compound yielding a solid condensate, i.e. chemical deposition
H01L 21/365 - Deposition of semiconductor materials on a substrate, e.g. epitaxial growth using reduction or decomposition of a gaseous compound yielding a solid condensate, i.e. chemical deposition
H01L 29/12 - Semiconductor bodies characterised by the materials of which they are formed
H01L 29/24 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only inorganic semiconductor materials not provided for in groups , , or
H01L 29/78 - Field-effect transistors with field effect produced by an insulated gate
H01L 33/12 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details thereof characterised by the semiconductor bodies with a stress relaxation structure, e.g. buffer layer
3.
GA2O3-BASED SINGLE CRYSTAL SUBSTRATE AND METHOD FOR MANUFACTURING GA2O3-BASED SINGLE CRYSTAL SUBSTRATE
232323233-based single crystal substrate that is manufactured from a completely twin crystal-free single crystal, said single crystal being grown using a gallium oxide starting material in which the impurity concentration is controlled so as to give a concentration of impurities contained in the single crystal of 0.02-0.15 mol% inclusive.
[Problem] To provide a brushless motor that suppresses heat generation by restraining eddy currents during high-speed rotation, and that can also continuously rotate stably at high speeds, and to provide a handpiece that incorporates the brushless motor. [Solution] In a rotor 10, a yoke 13 has a hollow cylindrical shape which has a larger inner diameter than the outer diameter of a cylindrical portion of a magnet 11, and a holder 14 holds the magnet 11 and the yoke 13 coaxially. In a stator 20, a sleeve 22 has a hollow cylindrical shape in which the inner and outer diameter are larger than the outer diameter of the cylindrical portion of the magnet 11 and smaller than the inner diameter of the cylindrical portion of the yoke 13, and the sleeve 22 holds three coils 21 at equal intervals. In addition, the coils 21 are configured to be positioned in a space between the outer surface of the cylindrical portion of the magnet 11 and the inner surface of the cylindrical portion of the yoke 13.
H02K 21/14 - Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
3512233 phase, in the form of a lamellar structure. When ultraviolet light having a wavelength of 315-380 nm (exclusive of 380) is incident on the ceramic composite, the ultraviolet light is reflected by the ceramic composite and emitted. Moreover, the ultraviolet light, which is not reflected by the ceramic composite, is transmitted through the ceramic composite and incident on the fluorescent body, and light having the apparent color of the fluorescent body is emitted from the fluorescent body. Furthermore, the color of the light, which is reflected by the ceramic composite and emitted, and the color of the light emitted from the fluorescent body are mixed.
2233), the adsorption layer 3 being disposed on the first insulating layer 2; a second insulating layer 4 disposed on the adsorption layer 3; and a gate electrode layer 5 disposed on the second insulating layer 4.
Provided are a substrate for epitaxially growing a diamond crystal that has at least a metal surface, the metal surface having an off angle φ of more than 0°, and a full width at half maximum of an X-ray diffraction peak from an (002) plane determined by an X-ray rocking curve on the metal surface being 300 sec or less, and a method for manufacturing a diamond crystal, which comprises epitaxially growing the diamond crystal on the metal surface of the substrate.
C30B 33/00 - After-treatment of single crystals or homogeneous polycrystalline material with defined structure
H01L 21/205 - Deposition of semiconductor materials on a substrate, e.g. epitaxial growth using reduction or decomposition of a gaseous compound yielding a solid condensate, i.e. chemical deposition
H01L 21/31 - Treatment of semiconductor bodies using processes or apparatus not provided for in groups to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After-treatment of these layers; Selection of materials for these layers
[Problem] To realize a diamond crystal substrate that has a large size and excellent parallelism and, in a semiconductor film formation process, the warpage behavior of which can be easily controlled, and a method for producing this diamond crystal substrate. [Solution] A diamond crystal substrate that is produced by: preparing a non-diamond crystal base substrate; forming a diamond crystal on one surface of the base substrate to form dislocation concentrated regions in the diamond crystal while controlling the intervals among the dislocation concentrated regions to 10-4000 nm inclusive; after the thickness reaches 0.05-5.0 mm inclusive, separating the diamond crystal from the base substrate to thereby give a diamond crystal substrate having tensile stress in each of first and second surfaces. On the first surface and/or the second surface of the diamond crystal substrate thus produced, a semiconductor film consisting of at least one layer is formed.
[Problem] To provide a method for collecting a living tissue, the method being capable of suctioning a large living tissue on the order of mm while preventing damage to the living tissue. [Solution] The method for collecting a living tissue includes the following steps. First, a part is prepared. First, a part is prepared. The part includes a plurality of holes (n≥2) through which air passes from a first surface to a second surface, and has a wall surface formed between the holes, wherein a first surface-side end of the wall surface is rounded to form only a curved surface. Then, the living tissue is collected in the holes of the part. The living tissue has a dimension in the maximum direction of 0.5 mm to 100 mm on the order of mm, and comes into contact with one side of the hole by suction. When collecting the live tissue, the total area of the holes for collection is 50% to 90% of the area of the living tissue.
C12N 1/00 - Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
10.
GARNET-TYPE LITHIUM SOLID ELECTROLYTE MATERIAL AND BATTERY
H01B 1/06 - Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances
H01B 1/08 - Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances oxides
C30B 29/28 - Complex oxides with formula A3Me5O12, wherein A is a rare earth metal and Me is Fe, Ga, Sc, Cr, Co or Al, e.g. garnets
[Problem] To enable observation of an internal shape and measurement of the dimensions and geometric accuracy thereof by: inserting an optical probe along the inner peripheral surface of an object being measured, the inner peripheral surface having a non-circular cross-sectional shape such as an elliptical or polygonal shape; irradiating the inner peripheral surface with a beam of light in a rotational manner; and three-dimensionally capturing reflected light. [Solution] A transparent pipe having an irregular cross-sectional shape that completely fits inside a hole having an elliptical or polygonal cross-sectional shape is provided in the hole. A rotating optical measurement system is disposed inside the transparent pipe, and a radial gap between the inner surface of the object being measured and the transparent pipe is measured by an interferometric optical method. The dimensions and shape of the inner peripheral surface of the object being measured are calculated using a computer in accordance with the formula: radial distance to object being measured = (radial dimension of transparent pipe + radial gap). This enables high-precision measurement.
[Problem] To provide a clutch device and a motor unit which make it possible to exhibit clutch torque in a stable manner. [Solution] An input disk (11) and an output disk (12) in a clutch device (10) are provided so as to be connectable/separable in an axial direction A and have, on mutually opposing surfaces (11b), (12b), tooth parts (11a), (12a) that can be fitted thereto/separated therefrom in association with connection/separation. The tooth parts (11a), (12a) have recess parts (11c), (12c) and projection parts (11d), (12d) that extend in a radial direction R so as to be provided alternately in a circumferential direction θ. The recess parts (11c), (12c) and the projection parts (11d), (12d) are formed in a curved surface state where a circumferential width W is continuously extended toward the outer side of the radial direction R. In a state where the tooth parts (11a), (12a) of the input disk (11) and the output disk (12) are fitted to each other by being pressed by a biasing member (13), an engagement force for engaging in the axial direction A is set to be greater on the inner side of the tooth parts (11a), (12a) in the radial direction R than the outer side thereof. [Selected drawing] FIG. 6
F16D 43/20 - Internally controlled automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure
F16D 11/00 - Clutches in which the members have interengaging parts
13.
WRISTWATCH COMPONENT, WRISTWATCH, AND WRISTWATCH COMPONENT MANUFACTURING METHOD
[Problem] To provide: a component (wristwatch component) for a wristwatch that, while being made from diamond crystal, is strong against external impact force, can be easily shaped, and can add decorativeness; a method for manufacturing the wristwatch component; and a wristwatch comprising the wristwatch component. [Solution] A diamond crystal is prepared that has a planar direction shape that is a square shape, a circular shape, or a circular shape with an orientation flat surface. If the diamond crystal has a square shape, the length of a side thereof is at least 10.0 mm, and if the diamond crystal has a circular shape, the diameter thereof is at least 0.4 in. A wristwatch component is extracted from the diamond crystal through laser punching of the diamond crystal such that at least a portion of the outline thereof is formed so as to have arcs or elliptical arcs arranged at a pitch of 330 to 420 μm. The manufacturing of the wristwatch component also includes polishing of the wristwatch component extracted from the diamond crystal. A wristwatch is configured so as to comprise the wristwatch component.
[Problem] To provide a light propagation device which is capable of compensating for group delay difference, and whereby manufacturing cost can be reduced. [Solution] This light propagation device (1) is provided with an optical fiber (2) comprising a core and a cladding which has a lower refractive index than the core. The optical fiber (2) is either a step-index-type multimode optical fiber or a few-mode optical fiber, and an optical signal is propagated in at least two modes in the core of the optical fiber (2). In the optical fiber (2), bends and tensile forces that accompany the bends are discontinuously applied in two or more locations throughout the length of the optical fiber, and stress is nonuniformly generated in the outer circumferential direction of the optical fiber at the bend locations (A, B).
C30B 11/14 - Single-crystal-growth by normal freezing or freezing under temperature gradient, e.g. Bridgman- Stockbarger method characterised by the seed, e.g. its crystallographic orientation
[Problem] To provide a robot hand capable of having both "miniaturization" and "high durability". [Solution] A first finger part 20 has: segments 21, 22, 23, 24; joints 25, 26, 27, 28; and drive sources 56, 56, 57 which are servo motors included so as to correspond to the respective joints. A base unit 10 is provided with a drive source 51 for rotating the first finger part 20 inward and outward. In order to reduce a burden on a harness connected to each of the drive sources when the finger part is in motion, the harness is wound and disposed in areas indicated by A1, A2, A3, A4 located at positions excluding positions on the circumference of the rotary axis of the joints.
B25J 19/00 - Accessories fitted to manipulators, e.g. for monitoring, for viewing; Safety devices combined with or specially adapted for use in connection with manipulators
B25J 15/10 - Gripping heads having finger members with three or more finger members
B25J 15/12 - Gripping heads having finger members with flexible finger members
17.
FACING RING, WRISTWATCH, AND METHOD FOR MANUFACTURING FACING RING
[Problem] To provide a facing ring in which it is possible to improve decorative properties while ensuring visibility, a method for manufacturing the facing ring, and a wristwatch provided with the facing ring. [Solution] Sapphire crystal, ruby crystal, diamond crystal, or glass is prepared as a member, and the planar shape of the member is formed as a square, a rectangle, a circle, an elliptical shape, or any polygon having three or more vertices. In addition, a cross-section of the member is formed at least from two orthogonal surfaces and one surface that is formed at an incline relative to the aforementioned two surfaces. Furthermore, a recess is formed in the one surface, a light-emitting material is positioned in the recess, and reflective materials are formed in at least one of the two surfaces to manufacture a facing ring. The light-emitting material of the facing ring is caused to emit light while irradiated with light or in the dark, and the light emitted from the light-emitting material is reflected by the reflective materials to project a virtual image within the member. Furthermore, the facing ring is provided to the face of a wristwatch, and a reflective material is formed at least in a surface that is in contact with the face, from among the two surfaces.
C04B 35/44 - Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on aluminates
C09K 11/00 - Luminescent, e.g. electroluminescent, chemiluminescent, materials
C09K 11/80 - Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing rare earth metals containing aluminium or gallium
C30B 15/24 - Stabilisation or shape controlling of the molten zone near the pulled crystal; Controlling the section of the crystal using mechanical means, e.g. shaping guides
[Problem] To provide a linear vibration actuator that can obtain a large acceleration while facilitating control. [Solution] A biasing means for applying a biasing force to a mover 2 from both sides in the vibration direction has a spring member and a magnetic biasing means, so that the spring constant of the biasing means can be ensured even using a low non-linear region, and a large acceleration can be obtained. Furthermore, the non-linearity of the spring constant of the biasing means can be lowered, and the control when electric power is supplied to a coil 4 can be facilitated.
H02K 33/16 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with polarised armatures moving in alternate directions by reversal or energisation of a single coil system
B06B 1/04 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with electromagnetism
20.
DENTAL IMPLANT BODY AND DENTAL IMPLANT BODY MANUFACTURING METHOD
NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY (Japan)
Inventor
Muto Hikaru
Fukushima Manabu
Hiuga Hideki
Yoshizawa Yuichi
Abstract
[Problem] To provide a dental implant body and a dental implant body manufacturing method with which the strength of bonding with a jawbone can be improved, falling out or dislodgment from the jawbone can be suppressed, and prognosis can be improved. [Solution] A dental implant body is produced by: dispersing a ceramic powder in a gellable liquid to produce a slurry; gelling the slurry to produce a gel body; and freezing, drying and sintering the produced gel body to form a porous body composed of a ceramic sintered body, the porous body having stop holes or communication holes formed from the surface thereof, and having wall surfaces formed between the stop holes or communication holes. The concentration of the ceramic powder to be dispersed in the liquid is set to 5-65%; the gel body is frozen in the range of -40 to -10°C; the porosity of the stop holes or communication holes is 50±10%; and the diameter of the stop holes or communication holes is 50-190 μm.
A61C 8/00 - Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
[Problem] To provide a method for assembling a linear vibration actuator with which it is possible for a plurality of guide shafts to be arranged accurately and easily. [Solution] A method for assembling a linear vibration actuator comprising a movable element which is caused to vibrate in a straight line in a prescribed direction, a plurality of guide shafts which slidably hold the movable element, and a casing which accommodates and encloses the movable element and the guide shafts, wherein, in a state in which the guide shafts are being held by guide shaft holding portions that are formed in the movable element, the movable element and the guide shafts are accommodated in the casing, and the guide shafts are fixed so as not to move relative to a peripheral wall portion of the casing.
H02K 33/16 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with polarised armatures moving in alternate directions by reversal or energisation of a single coil system
B06B 1/04 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with electromagnetism
[Problem] To provide a linear vibration actuator having excellent productivity and vibration characteristics. [Solution] In this linear vibration actuator, a movable element which is disposed inside a casing and which vibrates in a straight line in a prescribed direction while being urged by an urging means is slidably held by a plurality of guide shafts. Furthermore, the guide shafts are fixed so as not to move relative to the casing, and a positioning shape for positioning the guide shafts is formed as part of a peripheral wall portion of the casing.
H02K 33/16 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with polarised armatures moving in alternate directions by reversal or energisation of a single coil system
B06B 1/04 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with electromagnetism
23.
OPTICAL COUPLING DEVICE AND METHOD FOR MANUFACTURING OPTICAL COUPLING DEVICE
[Problem] To provide: an optical coupling device whereby it is possible to reduce connection loss and return loss between an optical fiber and a self-forming optical waveguide, and to reduce manufacturing cost and enhance yield by facilitating arrangement of an optical fiber; and a method for manufacturing the optical coupling device. [Solution] A plurality of optical fibers which comprise at least one core in which end parts are obliquely formed so as to have an inclination angle, and a photocurable resin are prepared. The inclination angle is formed on the basis of the refractive index of the photocurable resin and the cores of the optical fibers. The optical fibers are arranged facing each other, the optical axis directions thereof are made parallel to each other, and the photocurable resin is arranged between the optical fibers. The optical coupling device is manufactured by causing light to be incident on the photocurable resin from the optical fibers and curing the photocurable resin to form a linear self-forming optical waveguide, and forming a cladding by curing the photocurable resin.
[Problem] To provide CMP processing conditions for obtaining an off-axis substrate using a diamond crystal substrate, and a diamond crystal substrate having an off-axis angle depending on the CMP production method. Furthermore, to provide a homo-epitaxial growth method for forming a diamond crystal on a surface of the substrate, and a diamond crystal substrate on which a diamond crystal is formed. [Solution] The present invention involves: preparing a diamond crystal substrate; performing CMP on the substrate from any of crystal planes (100), (111), and (110) at an off-axis angle of 7° or less (provided that 0° is excluded) using a slurry containing at least one of zinc oxide, chromium oxide, cerium oxide, titanium oxide, iron oxide, nickel, cobalt, vanadium, copper, and manganese; confirming, when the CMP duration has reached 100 hours, the formation of a terrace including a series of crystal planes which are any of (100), (111), and (110) and which are linked together like steps at an off-axis angle of 7° or less at the atomic level, and the formation of a diamond crystal substrate having a surface on which the crystal surface appears; and ending CMP.
A linear vibration actuator includes: a mover having a plurality of magnets linearly arrayed in the vibration direction; a guide portion holding the mover to be allowed to linearly move in the vibration direction; a plurality of planar coils wound in a flat plate shape on a flat surface facing the mover; a pair of first biasing magnets respectively arranged at both ends of the mover in the vibration direction; and a pair of second biasing magnets that are respectively arranged facing the pair of first biasing magnets, and respectively have the same polarities as those of the pair of first biasing magnets to bias the mover in the vibration direction.
H02K 33/16 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with polarised armatures moving in alternate directions by reversal or energisation of a single coil system
26.
OPTICAL CONNECTOR AND METHOD FOR MANUFACTURING OPTICAL CONNECTOR
[Problem] To provide: an optical connector that can easily reduce a connection loss even while allowing axial angular variation of each of optical fiber insertion holes, variation in gaps between center points of the respective optical fiber insertion holes, or use of ferrule having a round in a cross-section thereof; and a method for manufacturing the optical connector. [Solution] This optical connector (1) is at least provided with ferrules (2, 3) and n (n: natural number excluding 0) number of self-formed light guide paths (5a-5d), wherein: the ferrules are provided with n number of optical fiber insertion holes (2a, 3a) and the optical fiber insertion holes (2a, 3a) are each provided with optical fibers (4a-4d) inserted thereinto; there are variations in the core axis angles and in core gaps of the optical fibers (4a-4d); rounds are formed in the ferrule cross-sections (2b, 3b); and end sections of self-formed light guide paths (5a-5d) are optically connected to the respective optical fibers (4a-4d).
[Problem] To provide a multicore fiber-equipped optical connector with which it is possible to reduce manufacturing cost and improve yield, and a method for manufacturing the optical connector. [Solution] An optical connector (1) is configured to be provided with a plurality of optical fibers (4a-4g), one multicore fiber (2), and a plurality of self-written optical waveguides (5a-5g). The total number of cores of the plurality of optical fibers (4a-4g) and the total number of cores of the multicore fiber (2) are made the same, the plurality of optical fibers (4a-4g) and the multicore fiber (2) are disposed to face each other, and the self-written optical waveguides (5a-5g) are provided therebetween. Ends of the self-written optical waveguides (5a-5g) are optically connected to the respective cores of the plurality of optical fibers (4a-4g) and the respective cores of the multicore fiber (2), and either the plurality of optical fibers (4a-4g) or the multicore fiber (2) is made detachable from the self-written optical waveguides (5a-5g).
[Problem] To provide a vehicle sensing device, a parking area, a road, and a vehicle sensing method that make it possible to improve the accuracy of vehicle sensing while also conserving power. [Solution] A first sensing unit 2 that has low power consumption is caused to operate at all times and a second sensing unit 3 that has high power consumption is caused to operate only when an approaching object has been sensed by the first sensing unit 2, and the foregoing makes it possible to conserve power as compared to a configuration in which the second sensing unit 3 is caused to operate at all times. Moreover, using the second sensing unit 3, which more readily senses a vehicle, makes it possible to improve the accuracy of vehicle sensing as compared to a configuration in which only the first sensing unit 2 is caused to sense the approach of a vehicle. Specifically, it is possible both to conserve power and to improve sensing accuracy.
H01H 89/00 - Combinations of two or more different basic types of electric switches, relays, selectors and emergency protective devices, not covered by any single one of the other main groups of this subclass
G08G 1/02 - Detecting movement of traffic to be counted or controlled using treadles built into the road
G08G 1/042 - Detecting movement of traffic to be counted or controlled using inductive or magnetic detectors
G08G 1/14 - Traffic control systems for road vehicles indicating individual free spaces in parking areas
E04H 6/42 - Devices or arrangements peculiar to garages, not covered elsewhere, e.g. securing devices, safety devices
G01V 3/10 - Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
29.
LITHIUM-CONTAINING OXIDE CRYSTAL, BATTERY AND METHOD FOR PRODUCING LITHIUM-CONTAINING OXIDE CRYSTAL
[Problem] To provide: a lithium-containing oxide crystal which is free from cracks, while having a large area; a battery which uses this lithium-containing oxide crystal; and a method for producing this lithium-containing oxide crystal. [Solution] The present invention comprises a molten part formation step wherein at least some of the starting material of the lithium-containing oxide crystal, said starting material containing oxygen, is melted so as to form a molten part, and a growth step wherein a lithium-containing oxide crystal is grown form the molten part; the dew point of the atmosphere of the growth step is within the range of from -70°C to -35°C; and the lithium-containing oxide crystal is free from cracks, while having a cross-sectional area of 0.38 cm2 or more.
H01B 1/06 - Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances
H01B 1/08 - Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances oxides
A switch power generating mechanism includes at least a first movable component, a second movable component, a first deforming component connected to the first movable component, and a power generator, wherein a pressing force is transmitted to the second movable component from the outside of the switch power generating mechanism to cause at least part of the first movable component and at least part of the second movable component to move in a connected manner and cause the first movable component to rotate by a fixed amount to deform the first deforming component by a fixed amount; and the deformation of the first deforming component is released once the first movable component has been caused to rotate by the fixed amount, and power generation is performed with power generated in the power generator due to the first movable component rotated by a fixed amount with the release from the deformation.
[Problem] To provide a motion unit which is capable of ensuring a repulsive force while a magnetic force generation means is downsized. [Solution] Movement-side magnets 24A, 24B and fixed-side magnets 6A, 6B are magnetically separated, and the directions of magnetic poles of adjacent segments are opposite to each other, so that magnetic field lines can be converged on end surfaces of the magnets. Even when the magnets are downsized, repulsive forces between the movement-side magnets 24A, 24B and the fixed-side magnets 6A, 6B can be ensured.
B06B 1/04 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with electromagnetism
F16F 6/00 - Magnetic springs; Fluid magnetic springs
H02K 33/04 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs wherein the frequency of operation is determined by the frequency of uninterrupted AC energisation
[Problem] To provide a substrate-mounted connector that does not require a step for covering a tine section of a terminal after the soldering inspection of the tine. [Solution] A substrate-mounted connector 10 having a housing 30, a terminal having a tine section 41, and a shield member 60. The shield member 60 is positioned at a forward position advanced in the arrow F direction, at which the tine section is exposed when the shield member is not fitted to a partner connector 70. And, when fitted to the partner connector 70, the shield member is positioned in a retreated state indicated in Fig. 11, moved in the arrow R direction and covering the tine section.
[Problem] To provide a substrate-mounted connector comprising a shield member comprising one component and shielding a tine section. [Solution] A substrate-mounted connector 10 having a housing 30, a terminal having a tine section 41, and a shield member 60. The shield member 60 has a main body section 61, a lower spring section 62, and an upper spring section 63. The main body section 61 covers the tine section 41. The lower spring section 62 is in contact with a ground pattern upon a circuit board. The upper spring section 63 is pressed on to the housing 30 and presses the lower spring section 62 on to the ground pattern upon the circuit board.
[Problem] To implement a method for producing a zirconia material in which the peeling between zirconia and a coating layer composed of hydroxyapatite is prevented and which can provide a zirconia material that functions as a bio-reinforcement material. [Solution] Provided is a method for producing a zirconia material, the method including: dispersing hydroxyapatite powder in water to form a slurry; and then immersing zirconia in the slurry to form, on the zirconia, a coating layer composed of hydroxyapatite, wherein the concentration of the hydroxyapatite powder in the slurry is 1%.
[Problem] To provide compact size, light weight, dexterity, and safety. [Solution] A robot hand comprising: a palm section 10; three or more finger sections that are supported by the palm section 10; and drive sources that cause each finger section to move, wherein the three or more finger sections include at least a first finger section 20 and a second finger section 30 that faces a different direction from this first finger section 20, each of the first finger section 20 and the second finger section 30 has two or more degrees of freedom, including an adduction/abduction movement with an angle of 90 degrees or greater and a flexion/extension movement in a direction intersecting the adduction/abduction movement, the drive sources are provided for each movement of the finger sections, and at least one of the drive sources is provided with a clutch mechanism that cuts off an output due to a prescribed or greater load.
[Problem] To lighten a load during a flexion movement. [Solution] A robot hand comprising: a palm section 10; a finger section that is supported by the palm section 10; and a drive source that causes the finger section to perform a flexion/extension movement, wherein the finger section comprises at least a first joint section S1 that is pivotably supported so as to be able to flex/extend in relation to the palm section 10, and a second joint section S2 that is pivotably supported so as to be able to flex/extend in relation to the first joint section S1, the first joint section S1 is structured so as to flex due to a motive force of the drive source, the second joint section S2 is structured so as to flex from a starting position due to a motive force of the drive source if the first joint section S1 is restricted when the same has flexed due to the same motive force, and magnets M1, M2 that attract these two joint sections and retain the same in the starting position are provided between the first joint section S1 and the second joint section S2.
[Problem] To provide a linear vibration actuator with which it is possible to generate vibrations with different frequencies, and to achieve a decrease in overall size. [Solution] Two movable elements 2A, 2B are capable of performing linear vibration independently, and, due to different resonant frequencies thereof, are capable of generating vibrations with different frequencies. Further, two shafts 3A, 3B guide the two movable elements 2A, 2B and function as a common guide part. Accordingly, compared to a configuration in which two movable elements are each guided by two (a total of four) shafts, the number of components can be reduced. Thus, it is possible to reduce the space required for accommodating the shafts 3A, 3B in a case 5 and to make the case smaller, making it possible to decrease the size of the linear vibration actuator 1A as a whole.
H02K 33/16 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with polarised armatures moving in alternate directions by reversal or energisation of a single coil system
B06B 1/04 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with electromagnetism
38.
POWER GENERATION MECHANISM AND POWER GENERATION METHOD
[Problem] To provide a power generation mechanism and a power generation method with which it is possible to generate a fixed power amount with high efficiency and execute a reliable switching operation, no matter how slow the speed of the force operating the power generation mechanism. [Solution] This power generation mechanism is formed from a first movable component, a second movable component, a torsion coil spring, a power generator, and a housing. A first wound section and a second wound section of the torsion coil spring are wound around a first center shaft in opposite directions to each other, initial elastic energy ie1 is applied to the first wound section and initial elastic energy ie2 is applied to the second wound section, the absolute values of the ie2 and the ie1 are set to be equal to each other, and the first center shaft and a shaft of the power generator are coupled by two spur gears or bevel gears. By the second movable component being rotated and the first movable component being rotated, elastic energy ie12 is accumulated in the first wound section, and by the teeth of the first and second movable components being disengaged, the first center shaft is made to rotate in the opposite direction by ie12, causing the power generator to generate power. The gear ratio between the two spur gears or bevel gears is such that it is possible to generate a power amount that is from 50% to 100% of the peak power amount from the shaft of the power generator.
A ceramic body for dental prosthesis can suppress a variation in quality in the sole ceramic body for dental prosthesis due to expansion of its diameter. The ceramic body for dental prosthesis is made of a ceramic material, is shaped to have a circular planar shape and a disk-like external shape, and has a diameter of 50 mm or more. The method for manufacturing this ceramic body for dental prosthesis includes: preparing a ceramic material; shaping the ceramic material by press shaping or by a machine tool; temporarily sintering the ceramic material at a temperature from a sintering temperature that provides theoretical density −700° C. or more to the sintering temperature −100° C. or less; and shaping the ceramic material to have a circular planar shape and a disk-like external shape so as to prepare the ceramic body for dental prosthesis having a diameter of 50 mm or more.
G01B 21/20 - Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring contours or curvatures, e.g. determining profile
G01N 3/40 - Investigating hardness or rebound hardness
G01N 9/00 - Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
Provided is a winding device configured so that the entirety of the device can be thinned and looseness of an elongated member can be reduced. In a winding device 1A, a flat motor 2 is used as a motor, and a spool 3 and a magical planetary gear mechanism 4 are formed flat along an extending XY plane of the flat motor 2. Thus, the entirety of the device can be configured flat, and can be thinned. Moreover, the magical planetary gear mechanism 4 prevents rotation of the spool 3 by external force, and therefore, looseness of the elongated member can be reduced.
B65H 18/10 - Mechanisms in which power is applied to web-roll spindle
B65H 75/34 - Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
B65H 75/00 - Storing webs, tapes, or filamentary material, e.g. on reels
[Problem] To provide an optical fiber array such that the step of mirror polishing the ends of optical fibers is eliminated, thereby reducing manufacturing costs. [Solution] This optical fiber array comprises: m optical fibers arranged in parallel (where m is a natural number excluding 0); an optical fiber alignment component with m grooves formed in parallel on the surface; and a cover. The optical fibers are aligned in the grooves of the optical fiber alignment component respectively and are held between the optical fiber alignment component and the cover. An end face of at least one of the optical fiber alignment component or the cover is formed at an acute angle relative to the axial direction of the optical fibers aligned in the respective grooves. The end of each optical fiber projects beyond the portion in contact with the cover and the respective groove in the optical fiber alignment component in the axial direction of the fiber, and the amount of projection by the end of the optical fiber is less than or equal to the amount of projection by the part or surface of the cover or the optical fiber alignment component that projects the most.
[Problem] To provide a diamond crystal which can be formed so as to have a large area, has high orientation properties, and enables the reduction in a FWHM. [Solution] A diamond crystal is formed with a bulk crystal having dislocation concentrated regions, wherein the distance between the dislocation concentrated regions is adjusted to 10 to 4000 nm inclusive. The crystal orientation of a crystal main plane on the surface of the diamond crystal is any one of (100), (111) and (110). The outer shape as observed on the planar direction is a rectangular shape, a circular shape or a circular shape provided with an orientation-flat surface. In the case of a rectangular shape, the dimension of one side is adjusted to 8.0 mm or larger. In the case of a circular shape, the diameter is adjusted to 8.0 mm or larger.
[Problem] To achieve: a diamond crystal polishing method capable of removing a process-modified section including dislocations from a main surface; and a diamond crystal in which the same process defect section has been removed from a main surface. [Solution] According to the present invention, a diamond crystal having a main surface oriented in the (100) plane is prepared, and next, when machine polishing the main surface of the diamond crystal, the tangent line direction at the contact point of the diamond crystal and a rotating polishing wheel in the rotation direction of the polishing wheel is set within ±10° of the <110> direction of the diamond crystal. Through the machine polishing, an additional process-modified section is formed parallel to the (111) plane orientation of the diamond crystal and passing through on the main surface of the diamond crystal. Subsequently, CMP is performed on the main surface of the diamond crystal, and the process defect section formed parallel to the (111) plane orientation is removed to remove the process-modified section from the main surface.
B24B 1/00 - Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
B24B 7/22 - Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain
B24B 37/10 - Lapping machines or devices; Accessories designed for working plane surfaces characterised by the movement of the work or lapping tool for single side lapping
C01B 32/28 - After-treatment, e.g. purification, irradiation, separation or recovery
A mode controller in which a step-index optical fiber (2a) and a graded-index optical fiber (2b) are connected and an optical fiber connection body (2) is formed, the optical fiber connection body (2) is wound on a plurality of bobbins (3a, 3b, 3c, 3d) in one or more sets of two thereof to form the mode controller, and the optical fibers are twisted to form helical parts (2a1, 2b1), light being incident on the step-index optical fiber (2a) and a propagation mode being converted to a balanced mode distribution, and then light being incident on the graded-index optical fiber (2b) and the mode being converted to an arbitrary lower order mode, wherein the mode controller is capable of emitting NFP light exhibiting EF conforming to the EF boundary condition described in the IEC 61300-1 international standard.
[Problem] To provide a linear vibration actuator that can vibrate a movable element at a certain degree of width of the vibration frequency. [Solution] A linear vibration actuator 1 comprises: a movable element 12 that is housed in a case 11 and has a plurality of magnets 122 linearly arranged in a vibration direction D11; a guide part 13 which holds the movable element 12 so that the movable element can move in a straight line; a flat plate-shaped coil 14 wound in a flat plate shape in at least one plane 151 of a pair of planes 151 sandwiching the movable element 12; a pair of first biasing magnets 161 respectively disposed on both ends of the movable element 12 in the vibration direction D11; and a pair of second biasing magnets 162 that are disposed inside the case 11 so as to respectively face the pair of first biasing magnets 161, and that have the same polarities as the respective polarities of the first pair of biasing magnets 161 so as to bias the movable element 12 in the vibration direction D11.
B06B 1/04 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with electromagnetism
H02K 33/16 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with polarised armatures moving in alternate directions by reversal or energisation of a single coil system
47.
Ceramic composite and production method for ceramic composite
To provide a ceramic composite and a production method therefor allowing ease of processing to be improved and fracture toughness to be improved simultaneously. The invention includes the steps of: preparing at least a liquid-form resin and a ceramic sintered body which has been sintered at a temperature which is 700° C. to 100° C. less than a sintering temperature at which a theoretical density is obtained; immersing the ceramic sintered body in the liquid-form resin, causing the liquid-form resin to infiltrate the ceramic sintered body; and hardening the infiltrated liquid-form resin to obtain a ceramic composite having a relative density of between 40% and 90% by causing the resin to infiltrate. Gaps where no resin has infiltrated are formed in the ceramic composite.
NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY (Japan)
ADAMANT NAMIKI PRECISION JEWEL CO., LTD. (Japan)
Inventor
Nishioka, Masateru
Miyakawa, Masato
Suzuki, Asako
Hashimoto, Yuichi
Abstract
The present invention provides a microwave treatment device having: a ceramic structure comprising a sintered compact of a laminated ceramic layer; a through hole in the ceramic structure and in which is arranged an object to be treated; and a conductor part that enables propagation of microwaves in the ceramic structure. The microwave treatment device subjects the object to be treated that is arranged in the through hole to a microwave treatment using microwaves supplied to the ceramic structure.
B01J 19/12 - Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electromagnetic waves
NATIONAL UNIVERSITY CORPORATION SHIGA UNIVERSITY OF MEDICAL SCIENCE (Japan)
NATIONAL UNIVERSITY CORPORATION TOYOHASHI UNIVERSITY OF TECHNOLOGY (Japan)
Inventor
Suzuki Asako
Tani Tohru
Naka Shigeyuki
Ohira Takashi
Miyazaki Motoaki
Tsukamoto Satoshi
Sakai Naoki
Abstract
[Problem] To provide an impedance matching circuit capable of being used for a high-power application of several tens of watts or more, and capable of higher-speed impedance matching. [Solution] An impedance matching circuit provided with a variable frequency alternating-current power source is connected to a desired object load, the frequency of the variable frequency alternating-current power source is changed, the trajectory of an output impedance is represented in a spiral form on a Smith chart, and the output impedance is either matched to an impedance being the complex conjugate of the impedance of the object load, or is brought into a desired numerical range. Furthermore, a plurality of frequency ranges in which the output impedance is either matched to the impedance being the complex conjugate of the impedance of the object load, or is brought into the desired numerical range are caused to exist. It is preferable that the impedance being the complex conjugate of the impedance of the object load be plotted in a predetermined place within the whole range on the Smith chart, and that the frequency range in which the frequency of the variable frequency alternating-current power source is changed be a desired frequency range.
Provided is an optical branching/coupling device in which optical transmission quality is improved by preventing a reduction in optical transmission quality, the reduction being due, for example, to an optical waveguide core affecting a light of another optical waveguide core in the vicinity of a joining section of the two optical waveguide cores. This optical branching/coupling device includes: a first optical waveguide that is provided extending from one end side to other end side; a second optical waveguide that is provided extending on a separate route from the one end side to the other end side, the other end side of the second optical waveguide being joined to the other end side of the first optical waveguide; and a cladding layer that covers the periphery of the first optical waveguide and the second optical waveguide, wherein the first and second optical waveguides comprise a cured product of a photocuring resin.
G02B 6/42 - Coupling light guides with opto-electronic elements
G02B 6/12 - Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
G02B 6/28 - Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
G02B 6/036 - Optical fibres with cladding core or cladding comprising multiple layers
G02B 6/13 - Integrated optical circuits characterised by the manufacturing method
[Problem] To provide a MEMS controller and a MEMS control method with which, in a MEMS provided with oscillating parts, which can oscillate around two axes, resonance of the oscillating parts is suppressed or prevented, unnecessary oscillation around one of the axes is suppressed or prevented, and rapid convergence is possible if resonance or unnecessary oscillating occurs. [Solution] Provided is a MEMS controller that supplies, to a MEMS comprising at least two support parts and two oscillating parts supported by the support parts, voltages for controlling oscillating angles generated by the oscillating parts, which have the two support parts as center axes; while each voltage transitions from an initial voltage V0 (V) to a set voltage V1 (V), which maintains the oscillating angle of an oscillating part at a set angle, the MEMS controller supplies a voltage V2 (V), which is a voltage value excluding both the initial voltage V0 (V) and the set voltage V1 (V). Further provided is a MEMS control method.
B81B 3/00 - Devices comprising flexible or deformable elements, e.g. comprising elastic tongues or membranes
G02B 26/08 - Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
52.
POWER GENERATION MECHANISM AND POWER GENERATION METHOD
[Problem] To provide a power generation mechanism and a power generation method, wherein a certain amount of power generation can be achieved and a reliable switching operation can be performed no matter how slow the force driving the power generation mechanism is. [Solution] This power generation mechanism is formed of at least a first movable component, a second movable component, a torsional coil spring, a power generator, and a housing, wherein: the first movable component and the second movable component are gears; a first wound section and a second wound section of the torsional coil spring are wound around a first center shaft in opposite directions to each other; initial elastic energy ie1 is imparted to the first wound section and initial energy ie2 is imparted to the second wound section, the absolute values of ie1 and ie2 being set to be equal to each other; the second movable component is rotated by a force coming from outside the power generation mechanism, and the first movable component is rotated by engaging the gears of the first movable component and the second movable component; elastic energy ie12 is accumulated in the first wound section; and power generation is performed by disengaging the gears of the first movable component and the second movable component and rotating the first center shaft in the reverse direction by means of ie12, and the first center shaft is rotated by means of ie1 and ie2.
[Problem] To provide a component with which it is possible to provide enhanced decoration while limiting manufacturing costs, which also has a counterfeit-preventing effect, and the use of which can be expanded horizontally to other products, and to provide a wristwatch, an item of jewelry, a bag, a personal ornament, a tag and a fastener, for example, provided with said component. [Solution] This component comprises at least a first member, wherein the first member is formed from any of a sapphire single crystal, a ruby single crystal, quartz glass or a diamond single crystal. In addition, any of letters, graphics and symbols are formed in a recessed shape in a surface of the first member, a light-emitting material is disposed inside the recessed locations, and the light-emitting material is caused to emit light by irradiating the light-emitting material with light having a wavelength at least equal to 250 nm and at most equal to 400 nm.
[Problem] To provide: a component with which it is possible to improve decorativeness while suppressing the manufacturing cost, which also has a forgery prevention effect and can be developed into other products; and a watch, jewelry, bag, accoutrement, tag, slide fastener, and the like provided with the component. [Solution] A component is constituted by at least a first member (2), and the first member (2) is formed by any one of a sapphire single crystal, a ruby single crystal, glass, and a diamond single crystal. Furthermore, a light-emitting material (5) is disposed over at least a part of a side surface or the entire circumference, and the light-emitting material is caused to emit light when irradiated with a special light source light or in the dark.
Provided are: an easily producible ceramic body for a dental prosthesis capable of minimizing any irregularity in the quality of unitary ceramic bodies for dental prostheses associated with increases in diameter; and a method for producing said body. This ceramic body for a dental prosthesis comprises a ceramic material, has a diameter of 50 mm or more, and is molded into a circular planar shape and a disc-shaped external shape. In this method for producing a ceramic body for a dental prosthesis, a ceramic material is prepared, the ceramic material is molded by press molding or using a machine tool, the ceramic material is pre-sintered at a temperature that is 700 to 100°C below the sintering temperature at which the theoretical density is obtained, and a ceramic body for a dental prosthesis having a diameter of 50 mm or greater is prepared, said body being molded to have a circular planar shape and a disc-shaped external shape.
G01N 21/27 - Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection
[Problem] To provide a notification device provided with a switch power generation mechanism which is capable of ensuring a constant amount of generated power no matter how slow the speed of the force for operating the switch power generation mechanism is, which is capable of accurately providing a notification of entry of a vehicle or a location that the vehicle passes through, and which is excellent in durability and weather resistance. [Solution] The notification device is provided with at least two switch power generation mechanisms (1). Each of the switch power generation mechanisms (1) is at least formed from a first movable part (1a), a second movable part (2a), a first deformation part (1b) coupled to the first movable part (1a), and a generator (3). Further, force is transmitted to the second movable part (2a) from outside the switch power generation mechanism (1) such that the first movable part (1a) and the second movable part (2a) are at least partially interlocked together. The first movable part (1a) is rotated by a fixed amount to deform the first deformation part (1b) by a fixed amount. After the first movable part (1a) is rotated by the fixed amount, the deformation of the first deformation part (1b) is released, and power is generated by the generator (3) in response to the release from the deformation. Furthermore, a signal is sent by a sending means in accordance with the generation of power.
[Problem] To provide: a panel component making it possible to improve decorativeness while also ensuring visibility of other components, and also having an anti-counterfeit effect; and a wristwatch provided with said panel component, a worn accessory, a tag, and a fastener. [Solution] A panel component is constituted of at least two panel members, the panel members being formed of single-crystal sapphire, single-crystal ruby, glass, or single-crystal diamond, and the planar shape being square, rectangular, circular, or elliptical, or a polygon having three or more vertices. An inclined surface is formed on a margin section of one of the panel members, and the two planar members are attached together with the inclined surface serving as a non-attachment surface. Text, shapes, or symbols are printed or concavely formed on an attachment surface, and if any concave places are formed, a light-emitting material is arranged therein. The width of the inclined surface is at least the height dimension of the text, shapes, or symbols, and the text, shapes, or symbols are formed straddling a centerline of the planar shape of the panel members.
G09F 13/20 - Illuminated signs; Luminous advertising with luminescent surfaces or parts
B44F 1/06 - Designs or pictures characterised by special or unusual light effects produced by transmitted light, e.g. transparencies, imitations of glass-paintings
[Problem] To perform high-precision measurement in an optical inner surface measurement device that observes and measures the inner circumferential surface of a thin nozzle hole which is an object to be measured. [Solution] The present invention is provided with: a rotation-side optical fiber that is rotated by a motor; and a fixed-side optical fiber that is not rotated relative to the rotation-side optical fiber, wherein the rotation-side optical fiber has an optical path conversion means at an end thereof, and an end surface of the rotation-side optical fiber and an end surface of the fixed-side optical fiber are opposed to each other, behind the motor, with a small space therebetween so that a rotary optical joint is configured. The present invention has a sway detection sensor that measures a sway amount of the rotation-side optical fiber. Reflection light from the inner circumferential surface of an object to be measured is taken by the optical path conversion means, is guided to a measurement machine body via the rotation-side optical fiber and the fixed-side optical fiber, and is analyzed by a computer, whereby inner surface measurement data is obtained. Further, a sway amount detected by the sway detection sensor is added to the inner surface measurement data, whereby high-precision measurement can be performed while the influence of rotational swaying and the influence of variation of an optical fluctuation are eliminated.
The present invention makes it possible to provide good grasping performance with low energy consumption. A hand robot control method comprises: a first step of causing, by energizing a plurality of motors for the fingers in a prescribed order, each joint corresponding to a motor to bend; a second step of placing a joint into a locked state with a one-way power transmission mechanism each time a detection is made by a tactile sensor means by de-energizing the motor of the joint corresponding to that tactile sensor means that has made the detection; a third step of causing the joint corresponding to the motor to bend by energizing the prescribed motor under the condition that all motors are de-energized; and a fourth step of placing all joints in a locked state by de-energizing all motors including the prescribed motor under the condition that the grasping force based on a detected value of the tactile sensor means is a target grasping force.
[Problem] To provide a ceramic composite and a production method therefor allowing ease of processing to be improved and fracture toughness to be improved simultaneously. [Solution] The invention comprises the steps of: preparing at least a liquid-form resin and a ceramic sintered body which has been sintered at a temperature which is 700°C to 100°C less than a sintering temperature at which a theoretical density is obtained; immersing the ceramic sintered body in the liquid-form resin, causing the liquid-form resin to infiltrate the ceramic sintered body; and hardening the infiltrated liquid-form resin to obtain a ceramic composite having a relative density of between 40% and 90% by causing the resin to infiltrate. Gaps where no resin has infiltrated are formed in the ceramic composite.
Provided is a MEMS optical switch that can prevent the occurrence of mirror resonance as well as ringing, in optical output, of outgoing light propagated to an output port, thereby making it possible to shorten the optical switching time of an input port and/or the output port. A MEMS optical switch 120 is provided with a mirror and is an n×m optical switch where the number of input ports 110 is n (n ≥ 1) and the number of output ports 130 is m (m ≥ 1). During transition from an initial voltage V0 (V) to a set voltage V1 (V) that controls the angle of the mirror 121 to a set-value angle, a voltage V2 (V) that is greater than V0 (V) and less than V1 (V) is impressed on the mirror 121 and, when the mirror 121 has swung to the set-value angle due to the impressing of V2 (V), V1 is impressed.
G02B 6/35 - Optical coupling means having switching means
G02B 26/08 - Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
62.
LIGHT PROPAGATION DEVICE, DISPLAY DEVICE AND LIGHTING DEVICE
Provided is a light propagation device capable of flexibly varying the light volume of a branch destination, when incident light branches into a plurality of branches and is emitted. This light propagation device is characterized by comprising: an input port into which light enters; an output-side port that includes a plurality of output ports which emit light to the outside; a MEMS light switch that has a tilt mirror controlled to a tilt angle corresponding to the drive voltage, and that optically joins the input port and one of the output-side ports in accordance with the tilt angle of the tilt mirror; a setting reception unit that receives a setting relating to the light volume of the output light; a light volume control unit that sets, on the basis of the setting relating to the light volume, a switching schedule indicating the allocation period of each of the output-side ports for each single cycle; and a drive control unit that outputs a drive voltage on the basis of the switching schedule.
G02B 6/35 - Optical coupling means having switching means
F21V 8/00 - Use of light guides, e.g. fibre optic devices, in lighting devices or systems
G02B 26/08 - Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
63.
OPTICAL PROPAGATION DEVICE, AND OPTICAL DISPLAY DEVICE AND ILLUMINATION DEVICE USING OPTICAL PROPAGATION DEVICE
Provided is an optical propagation device capable of collecting light emitted from a plurality of light sources without the need for a coupler, thereby achieving reduction in the production cost. The optical propagation device (1) at least comprises light sources (2), a MEMS optical switch (3), a switching control device (4), and optical waveguides (5). Each light source (2) has a fixed output with the emitted light having a wavelength range between 445 nm and 700 nm. The MEMS optical switch (3) is composed of n × m (n ≥ 2, m ≥ 1) optical switches. Each light source (2) is optically connected to respective input port (11) and each optical waveguide (5) is optically connected to respective output port (12). Each input port (11) is switched at fixed cycles by the switching control device (4) and optically connected to respective optical waveguide (5) at each cycle, thereby propagating the light emitted from the light source (2) to the optical waveguide (5).
G02B 6/35 - Optical coupling means having switching means
F21V 8/00 - Use of light guides, e.g. fibre optic devices, in lighting devices or systems
G02B 26/08 - Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
Provided is an optical branching/coupling instrument in which optical transmission quality is improved by preventing a reduction in optical transmission quality, said reduction being due, for example, to an optical waveguide core affecting a light of another optical waveguide core in the vicinity of a joining section of the two optical waveguide cores. This optical branching/coupling instrument comprises: a first optical waveguide 1 that is provided extending from one end side to another end side; a second optical waveguide 2 that is provided extending on a separate route from the same one end side to the other end side, the other end side of said second optical waveguide 2 being joined to the other end side of the first optical waveguide 1; and a cladding layer 3 that covers the periphery of the first optical waveguide 1 and the second optical waveguide 2, wherein the first and second optical waveguides comprise a cured product of a photocuring resin.
G02B 6/12 - Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
G02B 6/28 - Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
G02B 6/42 - Coupling light guides with opto-electronic elements
65.
OPTICAL BRANCHING/COUPLING INSTRUMENT, MANUFACTURING METHOD FOR SAID OPTICAL BRANCHING/COUPLING INSTRUMENT, LIGHT SOURCE DEVICE USING SAID OPTICAL BRANCHING/COUPLING INSTRUMENT, AND LIGHT EMITTING DEVICE
Provided is an optical branching/coupling instrument with a simple structure and good productivity. This optical branching/coupling instrument is characterized by comprising: a single first port 10 that comprises an optical fiber; a plurality of second ports 20 that each comprise an optical fiber and that are arranged at the periphery of the optical axis of the first port 10, in locations that are removed from the first port 10 in an optical axis direction; a core layer 30 that transmits light between the first port 10 and the second ports 20; and a cladding layer 40 that covers the periphery of the core layer 30, wherein the core 30 comprises a plurality of optical waveguides 31, one end side of said optical waveguides 31 being connected to each core 21 of the plurality of second ports 20, and another end side of said optical waveguides 31 joining together and being connected to a core 11 of the first port 10, and the optical waveguides 31 are a cured product of a photocuring resin.
G02B 6/13 - Integrated optical circuits characterised by the manufacturing method
G02B 6/28 - Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
G02B 6/30 - Optical coupling means for use between fibre and thin-film device
66.
SWITCH POWER GENERATING MECHANISM AND SWITCH POWER GENERATING METHOD
[Problem] To provide a switch power generating mechanism and a switch power generating method that can secure a constant amount of power generation and that can perform a reliable switching operation regardless of how slow the speed of the force causing the mechanism to operate is. [Solution] Provided is a switch power generating mechanism that is formed of at least a first movable component, a second movable component, a first deforming component that is connected to the first movable component, and a power generator, wherein: a pressing force is transmitted to the second movable component from the outside of the switch power generating mechanism to cause at least part of the first movable component and at least part of the second movable component to move in a connected manner and cause the first movable component to rotate by a fixed amount so as to deform the first deforming component by a fixed amount; and the deformation of the first deforming component is released once the first movable component has been caused to rotate by the fixed amount, and power generation is performed with power being generated in the power generator due to the first movable component being rotated by a fixed amount as a result of the release from the deformation.
Provided is a steering-wheel power generation device that, when operating in-vehicle equipment wirelessly from an operation unit provided on a steering wheel, can supply power having high power generation efficiency and space efficiency in line with practical use.
A ring-shaped rack and a gear power generator fitted to the rack are provided in the gripping portion of the steering wheel, and a guide groove portion is provided on an inner wall of the gripping portion, thereby enabling a guide portion to absorb shock other than the shock in the power generation direction, and enabling stable power supply even when the steering wheel is being rotated.
B60R 16/03 - Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric for supply of electrical power to vehicle subsystems
H02K 7/18 - Structural association of electric generators with mechanical driving motors, e.g.with turbines
H02N 2/18 - Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
Provided is a power generating device which, while having a basic structure of using a rack and a pinion, increases power generating efficiency and has fewer components, has improved durability due to a simplified structure, and can easily be made in smaller sizes. Configuring a guide mechanism using outer walls of a case of a power generating unit as guides and combining the same with rails provided on inner walls of a case of the power generating device distributes unnecessary stress on the power generating unit over the inner walls of the case to obtain effects of achieving an overall small size, reduction in the number of components, and improved durability.
JAPAN ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY (Japan)
ADAMANT NAMIKI PRECISION JEWEL CO., LTD. (Japan)
Inventor
Shimoda, Tatsuya
Inoue, Satoshi
Ariga, Tomoki
Takeuchi, Shinji
Segawa, Shigetoshi
Abstract
An oxide layer 30 that is formed of one oxide dielectric body according to the present invention contains an oxide which is composed of bismuth (Bi), niobium (Nb) and titanium (Ti) (while optionally containing unavoidable impurities), and which has a crystal phase having a pyrochlore crystal structure. If the number of bismuth (Bi) atoms is taken as 1, the number of niobium (Nb) atoms is 0.5 or more but less than 1.7; and if the number of bismuth (Bi) atoms is taken as 1, the number of titanium (Ti) atoms is more than 0 but less than 1.3.
C04B 35/453 - Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on zinc, tin or bismuth oxides or solid solutions thereof with other oxides, e.g. zincates, stannates or bismuthates
H01B 3/12 - Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances ceramics
JAPAN ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY (Japan)
ADAMANT NAMIKI PRECISION JEWEL CO., LTD. (Japan)
Inventor
Shimoda, Tatsuya
Inoue, Satoshi
Ariga, Tomoki
Abstract
There are provided an oxide dielectric having excellent properties and a solid state electronic device (e.g., a capacitor, a semiconductor device, or a small electromechanical system) having such an oxide dielectric.
4-type crystal structure. The oxide layer 30 has a controlled content of the first crystal phase and a controlled content of the second crystal phase, in which the first crystal phase has a dielectric constant that decreases with increasing temperature of the oxide layer 30 in a temperature range of 25° C. or more and 120° C. or less, and the second crystal phase has a dielectric constant that increases with increasing temperature of the oxide layer 30 in the temperature range.
C04B 35/45 - Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on copper oxide or solid solutions thereof with other oxides
C04B 35/495 - Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on vanadium, niobium, tantalum, molybdenum or tungsten oxides or solid solutions thereof with other oxides, e.g. vanadates, niobates, tantalates, molybdates or tungstates
H01L 21/02 - Manufacture or treatment of semiconductor devices or of parts thereof
[Problem] To provide: a wristwatch band which allows the number of parts and the number of manufacturing processes to be reduced so as to improve mass productivity and enable cost reduction and which prevents reliability degradation due to deterioration over time; a method for producing the wristwatch band; and a wristwatch. [Solution] This wristwatch band is formed by: integrally forming an inner piece and an outer piece into an integrally formed piece; forming at least two of such integrally formed pieces; forming screw holes in each of the two outer pieces and forming a through-hole in the inner pieces; inserting a rod in the each of the screw holes to connect the two outer pieces and fix the two inner pieces to each other; further inserting a rod through the through-holes to assemble the inner pieces and the outer pieces to form a single band piece block; inserting both ends of the rod inserted in the through-holes into the screw holes of the outer pieces of another single band piece block; and connecting the single band piece blocks in a direction orthogonal to the longitudinal direction of the rod to form a wristwatch band. Furthermore, a wristwatch provided with such a wristwatch band is formed.
[Problem] To provide: a substrate comprising diamond which is free-standing, in which warpage is suppressed, and variation in the angles of the crystal axis over the entire surface of the substrate is suppressed; and a method for producing the diamond substrate. [Solution] In the present invention, an underlying substrate is prepared and multiple columnar diamonds comprising diamond single crystals are formed on one side of the underlying substrate. The diamond single crystals are grown from the tip of each columnar diamond and the diamond single crystals grown from the tip of each columnar diamond are coalesced to form a diamond substrate layer which is separated from the underlying substrate to produce a diamond substrate from the diamond substrate layer. Thus, the difference between the highest portion and the lowest portion of the diamond substrate in the thickness direction is over 0 μm and 485 μm or less, and the variation in the angles of the crystal axis over the entire surface of the diamond substrate is over 0° and 3.00° or less.
An optical-fiber assembly, optical coupling device and optical-fiber coupling device provided with optical-fiber assembly. In the optical-fiber assembly, damaging a fixing material is prevented by preventing clad mode light from being incident on the fixing material and direct incidence, on the fixing material; of laser light emitted from a light-emitting element or an optical-fiber is prevented to generate resistance to the emitted light. The optical-fiber assembly constitutes by at least an optical-fiber and capillary. The optical-fiber is inserted into the capillary and one optical-fiber end is protruded outside the capillary. The optical-fiber outer periphery and capillary are fixed using fixing material and ceramic material disposed to be in contact with the entire optical-fiber outer circumference and have predetermined contact length in the optical-fiber axial direction. The position at which the ceramic material is set in front of the position of the fixing material as viewed from one optical-fiber end.
Provided is a low-loss mode scrambler that allows for the steady-state mode distribution to be acquired within a short distance even when incident light is smaller than the numerical aperture of fibers to be measured and facilitates switching to the all-mode distribution state in a multi-mode fiber having a numerical aperture of 0.2 or more with a core diameter larger than tens of μm. A single fiber 2 is wound around and bundled on a plurality of bobbins 3a, 3b with a larger radius than the minimum bending radius of the fiber. A twisted portion 5 is formed by rotating the bobbins 3a, 3b and twisting the fiber 2. Thereby, the output acquired from the light entering the fiber is in the steady-state mode.
Higher-precision measurement is achieved by an optical inner surface measuring device configured to cause a probe to enter into the inner peripheral surface or deep hole of a target object, capture and observe reflection light from the inner surface in a three-dimensional manner, and measure the accuracy of the target object. In a structure including an optical fiber built into a tube, a light path conversion unit arranged at a leading end side of the optical fiber, and a motor configured to rotationally drive the light path conversion unit, a unit for measuring the amount of runout of a rotation shaft unit of the motor is provided. Shape data on the inner peripheral surface of a target object is obtained by calculating at a computer reflection light from the target object, and is modified by displacement amount data from a displacement measurement unit to realize high-precision measurement with no measurement error resulting from runout and rotational vibration of the rotation shaft of the motor.
G01B 11/14 - Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures
G01B 11/12 - Measuring arrangements characterised by the use of optical techniques for measuring diameters internal diameters
G01B 11/24 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
A61B 1/00 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
G01B 11/30 - Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces
A 3D-scanning optical imaging probe which inhibits rotation unevenness of rotational sections, shaft run-out, friction, and rotation transmission delay by reducing the occurrence of torque loss and rotation transmission delay, and which is capable of obtaining 3D scans and observation images within a fixed frontal range. A substantially tubular catheter has, provided along substantially the same line therein: a fixed-side optical fiber; a first optical path conversion means which is rotationally driven by a first motor, and which rotates and emits a beam of light forwards and tilted at an angle with respect to a rotational axis; and a second optical path conversion means which, at a tip side of a rotation-side optical fiber rotationally driven by a second motor, tilts an optical path by a micro-angle with respect to the rotational axis, and rotates and emits the beam of light to irradiate the first optical path conversion means therewith.
G02B 23/26 - Instruments for viewing the inside of hollow bodies, e.g. fibrescopes using light guides
G02B 26/08 - Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
A probe for a three-dimensional (3D) scanning optical imaging which prevents rotational irregularity, axial runout, friction, rotation transmission delays of a rotational part by reducing occurrences of rotation transmission delays, torque loss, and the like, and can perform scanning of a certain length in an axial direction and obtain a three-dimensional observation image, in a probe for OCT image diagnosis. A fixed side optical fiber that transmits light between a tip side and a rear side of a probe and is non-rotatably disposed, a first optical path conversion means that rotates to emit a light ray in a substantially radial direction, a rotation side optical fiber which is rotated by a motor, and a second optical path conversion means that rotates and emits light toward the first optical path conversion means are collinearly disposed. In this way, it is possible to obtain a high quality 3D observation image.
Current measuring device keeps fluctuation range for the ratio error in output within ±0.5% range and simplified assembly thereof. The measuring device includes at least a light entrance and exit, optical fiber for a sensor, Faraday rotator, first and second ¼-wavelength plates, polarization separator, light source, and signal-processing-circuit including a photoelectric-conversion-element. Optical fiber for a sensor has birefringence and includes one end wherein two circularly polarized light-beams having different rotation enter directions and another end reflects circularly polarized light-beams entered. Phase difference of two linearly polarized light-beams in the round-trip light path between two ¼-wavelength plates is compensated, and the Faraday rotational angle when the Faraday rotator is magnetically saturated set to 22.5°+α° so fluctuation range for ratio error in measured value of the current to be measured is set in range, ±0.5%. The crystal-axes on optical faces of two ¼-wavelength plates are set to be perpendicular or same direction.
Provided is optical imaging probe that is able to obtain stable observation image by optical path correction. It includes a rotation driving source adapted to drive and rotate a rotor; a first single-mode optical fiber inserted and fixed over the axial direction in the rotation center side of the rotor, the front end of which light is able to enter; a second single-mode optical fiber supported at the rear end side of the first single-mode optical fiber in a non-rotatable manner; and a gap and optical path correcting means interposed between the first single-mode optical fiber and the second single-mode optical fiber, and the optical path correcting means is adapted to expand and collimate the light transmitted from one single-mode optical fiber and pass it through the gap, and then guide it to the other single-mode optical fiber.
F16C 32/06 - Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
G02B 23/26 - Instruments for viewing the inside of hollow bodies, e.g. fibrescopes using light guides
A61B 1/00 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
Provided is an optical imaging probe that is able to obtain a stable observation image by a dynamic pressure bearing. An optical imaging probe for guiding rearward a light entering a front end includes: a rotation driving source adapted to drive and rotate a rotor; a tubular rotation shaft inserted and fixed over an axial direction in a rotation center side of the rotor; an optical fiber inserted in the tubular rotation shaft, the front end of which a light is able to enter; and a bearing member supporting the tubular rotation shaft in a rotatable manner, and the bearing member configures a dynamic pressure bearing adapted to generate a high lubricating oil film pressure locally at multiple positions in a circumference direction.
G02B 23/24 - Instruments for viewing the inside of hollow bodies, e.g. fibrescopes
A61B 5/00 - Measuring for diagnostic purposes ; Identification of persons
A61B 1/00 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
82.
Sleeve for optical communication and method of manufacturing the sleeve for optical communication
A sleeve for optical communication and method for manufacture for the sleeve for optical communication, for which withdrawal force for ferrules, which are generally used in the technical field of optical communication, or connection loss between ferrules is a predetermined value, and for which manufacturing steps are reduced so as to allow reduction of manufacturing cost. The invention is made by press-molding ceramic feedstock, which after cold isostatic pressing and sintering are performed thereto, and is made so that an inner circumferential surface, of a through-hole for inserting a ferrule formed on the length-direction of the axis, has a sintered state.
G02B 6/38 - Mechanical coupling means having fibre to fibre mating means
G02B 6/00 - Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
B28B 3/08 - Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form with two or more rams per mould
B30B 11/00 - Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses or tabletting presses
B28B 3/00 - Producing shaped articles from the material by using presses; Presses specially adapted therefor
B28B 3/04 - Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form with one ram per mould
09 - Scientific and electric apparatus and instruments
Goods & Services
Printed circuit boards made of low temperature co-fired
ceramics; printed wiring boards made of low temperature
co-fired ceramics; circuit board embedded with micro electro
mechanical systems; packages for semiconductor integrated
circuits, packages for electronic and electric components;
measuring or testing machines and instruments; electric or
magnetic meters and testers; telecommunication machines and
apparatus; electronic machines, apparatus and their parts.
There is provided a clutch mechanism that allows easy downsizing and produces favorable productivity. Output rotator has on the outer circumferential surface thereof cam surfaces and configured to gradually reduce the space from a housing chamber inner circumferential surface toward one side and recesses adjacent to the one side of the cam surfaces. Input rotator has pressure transmission portions that are fitted with circumferential play to the recesses and are protruded from the insides of the recesses in a centrifugal direction. Engagement pieces are disposed in contact with the cam surfaces and the housing chamber inner circumferential surface. When the input rotator rotates toward the other side relative to the one side, the pressure transmission portions abut against the engagement pieces and then abut against circumferential end surfaces in the recesses to press and move the output rotator.
F16D 41/066 - Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls all members having the same size and only one of the two surfaces being cylindrical
F16D 41/10 - Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface with provision for altering the freewheeling action with self-actuated reversing
F16D 41/06 - Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface
Provided is a current measuring device such that it is possible to reliably keep the fluctuation range for the ratio error in output to within a range of ±0.5% and such that assembly thereof can be simplified. The current measuring device is configured to include at least a light entrance and exit, an optical fiber for a sensor, a Faraday rotator, a first 1/4 wavelength plate, a second 1/4 wavelength plate, a polarization separator, a light source, and a signal processing circuit comprising a photoelectric conversion element. The optical fiber for a sensor has birefringence and comprises one end into which two circularly polarized light beams having different directions of rotation enter and another end that reflects the circularly polarized light beams that have entered. In addition, the phase difference of two linearly polarized light beams in the round-trip light path between the two 1/4 wavelength plates is compensated, and the Faraday rotational angle when the Faraday rotator is magnetically saturated is set to 22.5°+a° so that the fluctuation range for the ratio error in the measured value of the current to be measured is set to be in the range of ±0.5%. In addition, the crystal axes on the optical faces of the two 1/4 wavelength plates are set to be perpendicular or are set to be in the same direction.
A two-core optical fiber magnetic field sensor is configured from at least a light incidence/emission unit; a lens; a magnetic garnet; and a reflector, wherein the lens and the magnetic garnet are disposed between the light incidence/emission end of the light incidence/emission unit and the reflector; a light beam is emitted from one optical fiber; the light beam is reflected by the reflector after being transmitted through the lens and the magnetic garnet; the light beam is transmitted again through the magnetic garnet and the lens after the reflection; and incident on the other optical fiber, the light beam is emitted again from the other optical fiber, and reflected by the reflector after being transmitted through the lens and the magnetic garnet; and the light beam is transmitted again through the magnetic garnet and the lens after the reflection and incident again on the one optical fiber.
Disclosed is an optical fiber birefringence compensation mirror. Also disclosed is a current sensor wherein vibration resistance has been increased due to the optical connection of the optical fiber birefringence compensation mirror. The optical fiber birefringence compensation mirror includes: an optical fiber, a birefringence element, a lens, a magnet, a Faraday rotator, and a mirror. From the light incidence/emission end surface of the optical fiber, the birefringence element, Faraday rotator, and mirror are arranged in said order. Light comes in from the optical fiber, and is separated into two linearly polarised lights by the birefringence element. The polarisation planes of the two linearly polarised lights are rotated by the Faraday rotator, and the two linearly polarised lights are point-symmetrically reflected at one point by the mirror, then again rotated by the Faraday rotator, then re-combined into one light by the birefringence element and made to enter the optical fiber.
An electric measuring apparatus is constructed in such a way as to include a signal processing circuit equipped with at least a polarized light separating unit, Faraday rotators, a light source, a photoelectric conversion element, and optical fibers for a sensor. The optical fibers for the sensor are placed around the periphery of an electrical conductor through which electric current to be measured flows. Furthermore, the rotation angle of each Faraday rotator at the time when the magnetism of each Faraday rotator is saturated is set to 22.5°+α° at a temperature of 23° C., thereby changing the rotation angle of each Faraday rotator by α° from 22.5°.
An optical connector is provided to reliably hold a ferrule assembly in a housing to enable it stable optical connection. The optical connector is able to accomplish stable connection without any concern of displacement of an optical connecting end portion of the ferrule, even if the optical connector is subjected to repeated connecting and disconnecting operations. In the optical connector, a ferrule assemble having a polygonal prism-shaped flange is accommodated and held so as to elastically reciprocate in a housing of a cavity which has a polygonal engaging portion to receive and engage the flange of the ferrule assemble. A protrusion is formed at an end part of each engaging wall in the direction of inserting the ferrule assemble to rise toward an insertion opening for the ferrule assemble, and each protruding portion of the protrusion is provided to have each different rising height thereof.
Provided is an electric current measuring instrument wherein compensation for the ratio error versus temperature characteristics of optical fibers and Faraday rotators for a sensor can be made by an optical system of an electric current instrument and wherein the fluctuation range of ratio errors in outputs can be brought within a range of ~0. 5%. The fluctuation range of ratio errors in measured values of electric currents outputted by a signal processing circuit is set within a range of ~0. 5% over a temperature range of -20°C or more to 80°C or less by means of the following: An electric measuring instrument is constructed in such a way as to include a signal processing circuit equipped with at least a polarized light separating unit, Faraday rotators, a light source, a photoelectric conversion element, and optical fibers for a sensor. The optical fibers for the sensor are placed around the periphery of an electrical conductor through which electric current to be measured flows. Furthermore, the rotation angle of each Faraday rotator at the time when the magnetism of each Faraday rotator is saturated is set to 22.5° + .alpha.° at a temperature of 23°C, thereby changing the rotation angle of each Faraday rotator by .alpha.° from 22.5°.
09 - Scientific and electric apparatus and instruments
Goods & Services
ferrules, namely components used to couple tips of optical fibers inside a plug; electronic components and fiber optic components, namely ferrules, sleeves, optical fibers, and housings for optical fibers used in the field of fiber optics, LCD units used in the field of audio equipment, and capillaries for wire bonding used in manufacturing IC circuits
