Abstract: A current sensor includes a conductor through which current to be measured flows and which has dimensions in a length direction, a width direction, and a height direction, and first and second magnetic sensors that detect the strength of a magnetic field generated by the current. Each of the first and second magnetic sensors is positioned in an area between first and second conductor portions in the width direction and an area extending from one end to the other end in the height direction of the first and second conductor portions.

Abstract: An optical device includes a protective cover and a driver. An outer surface of the protective cover includes a first region having higher hydrophobicity than a second region. The first region is separated from the second region by a first boundary line extending from a starting point deviating from a center point of the protective cover in the direction toward an outer edge portion of the protective cover and a second boundary line extending from the starting point in the direction toward the outer edge portion of the protective cover, and which is located on a side where the center point is not included. Among angles defined by the first and second boundary lines, an angle on the side where the center point is not included is equal to or less than about 180°.

Abstract: A current sensor includes a conductor including first and second flow path portions that are branched, the first flow path portion being a portion in which a portion of a current to be measured flows and the second flow path portion being a portion in which another portion of the current flows, a first magnetic sensor to detect a strength of a first magnetic field generated by the current flowing in the first flow path portion, a second magnetic sensor to detect a strength of a second magnetic field generated by the current flowing in the second flow path portion, and magnetic shield bodies between the first and second flow path portions and between the first and second magnetic sensors.

Abstract: An optical device includes a protective cover disposed in a field of view direction of an optical sensor, a casing that holds the protective cover, a temperature adjuster that adjusts the temperature of the protective cover, and a vibrating body that drives the protective cover to remove foreign matter adhering to a surface of the protective cover. The temperature adjuster adjusts the temperature of the protective cover so that the temperature increases from the periphery to the center of the protective cover.

Abstract: An optical unit includes an optical sensor, a protective cover disposed in a direction of view from the optical sensor, an actuator to drive the protective cover, and a casing including a space between the casing and the protective cover and to which the optical sensor and the protective cover are attached. A first region on the casing adjacent to an outer edge of the protective cover with the space interposed between the casing and the outer edge of the protective cover is a hydrophobic region where a contact angle of a droplet is equal to or larger than a predetermined angle.

Abstract: An electric current sensor includes at least one permanent magnet and at least one magnetosensitive body that detects a to-be-measured magnetic field in a state in which a bias magnetic field is applied thereto from the permanent magnet. The permanent magnet is shaped such that the value of a permeance coefficient obtained when taking the application direction of the to-be-measured magnetic field as the magnetization direction is less than or equal to about 1.5 times the value of the permeance coefficient in a magnetization direction of the permanent magnet.

Abstract: A method of quantitatively measuring the adhesive strength of a cover sheet of an electronic component housing container including a main body having multiple housing recesses in a longitudinal direction and a cover sheet peelably adhered to the main body. The method includes mounting the housing container on a carrier plate by fitting the housing recesses in one or more housing holes of the carrier plate which includes a plate body having the one or more housing holes in the longitudinal direction and multiple sprocket holes spaced apart from the housing holes in a width direction and arranged at regular intervals in the longitudinal direction; engaging some tooth tips of a sprocket in the sprocket holes; and peeling the cover sheet from the main body by rotating the sprocket using the width direction as an axis to move the carrier plate in the longitudinal direction.

Abstract: The present invention provides: a copolymer (A) which is a copolymer obtained by copolymerizing one or plural cycloolefin monomers and one or plural acyclic olefin monomers, or a copolymer obtained by copolymerizing two or more cycloolefin monomers, wherein the glass transition temperature (Tg) of the copolymer is 100° C. or higher, the refractive index of the copolymer is 1.545 or higher, and the Abbe's number of the copolymer is 50 or larger, and at least one of the cycloolefin monomers is a deltacyclene.

Abstract: A reel for a taped series of electronic components includes first and second reel halves. The first reel half includes a first protruding portion and a first flange portion extending radially outward from an end of the first protruding portion. The second reel half includes a second protruding portion and a second flange portion extending radially outward from an end of the second protruding portion. The first and second flange portions each include an outermost end extending in a different direction from the radial direction.

Abstract: The present invention provides: a copolymer (A) which is a copolymer obtained by copolymerizing one or plural cycloolefin monomers and one or plural acyclic olefin monomers, or by copolymerizing two or more cycloolefin monomers, wherein a glass transition temperature (Tg) is 100° C. or higher, a refractive index is 1.545 or higher, and an Abbe's number is 50 or larger; a polymer (B) selected from: a ring-opening homopolymer obtained by ring-opening polymerization of only a monomer represented by formula (I), a ring-opening copolymer obtained by ring-opening copolymerization of the monomer represented by formula (I) and a monomer capable of ring-opening copolymerization with the monomer represented by formula (I), a hydrogenated product of the ring-opening homopolymer and a hydrogenated product of the ring-opening copolymer; a forming material containing the copolymer (A) or the polymer (B); and a resin formed article obtained by forming the forming material.

Abstract: A reel for a taped series of electronic components includes first and second reel halves. The first reel half includes a first protruding portion and a first flange portion extending radially outward from an end of the first protruding portion. The second reel half includes a second protruding portion and a second flange portion extending radially outward from an end of the second protruding portion. The first and second flange portions each include an outermost end extending in a different direction from the radial direction.

Abstract: A current sensor includes a substrate including a through-hole and at least one groove around the through-hole, a primary conductor extending into the through-hole and through the substrate, and through which a current to be measured flows, at least one magnetic sensor that is mounted on a first surface of the substrate and detects a strength of a magnetic field generated by the current to be measured flowing through the primary conductor, and at least one magnetic body surrounding the primary conductor and including a portion extending in the at least one groove to be fixed to the substrate.

Abstract: A current sensor includes a magnetic sensor, a magnetic sensor, a first calculator, a second calculator, and an output. The first magnetic sensor senses a magnetic field to generate a first sensor signal and a second sensor signal. The second magnetic sensor senses a magnetic field having a phase opposite to that of the magnetic field sensed by the first magnetic sensor in accordance with the current to generate a third sensor signal and a fourth sensor signal. The first calculator receives the first sensor signal and the third sensor signal to generate a first arithmetic signal. The second calculator receives the second sensor signal and the fourth sensor signal to generate a second arithmetic signal. The output receives the first arithmetic signal and the second arithmetic signal and generates an output signal based on the respective signals that are input.

Abstract: A magnetic sensor senses a magnetic field in a predetermined magnetic sensing direction. The magnetic sensor includes a chip on which at least one magnetic device is provided. The length of the chip in the magnetic sensing direction is twice or more the length of the chip in an orthogonal direction that is orthogonal or substantially orthogonal to the magnetic sensing direction.

Abstract: A current sensor that outputs an output signal according to a signal magnetic field that is generated by a current to be measured is provided. The current sensor includes at least one magnetic sensor, a temperature sensor, an amplifier, and an offset adjusting circuit. The magnetic sensor generates a sensor signal commensurate with the signal magnetic field. The temperature sensor detects an ambient temperature. The amplifier amplifies the sensor signal at an amplification rate commensurate with the detected temperature and generates the output signal. The offset adjusting circuit adjusts an offset of the output signal. The offset adjusting circuit adjusts an offset in accordance with a relationship (mathematical expression) that holds between an output signal under no signal magnetic field and an amplification rate corresponding to the temperature.

Abstract: A current sensor includes a conductor through which a current as a measurement target flows and two magnetic sensors. The conductor includes a first flow path, a second flow path adjacent to or in a vicinity of the first flow path in a width direction of the first flow path, and a first joining portion in which the first flow path and the second flow path merge with each other. The two magnetic sensors are provided side by side in a width direction and detect magnetic fields produced by currents that flow through the conductor. The conductor is provided with a first notch portion, in which a side edge in a farther side portion from the second flow path, of both of side edges of the first flow path in the width direction is notched.

Abstract: A current sensor includes a conductor including first and second flow path portions that are branched, the first flow path portion being a portion in which a portion of a current to be measured flows and the second flow path portion being a portion in which another portion of the current flows, a first magnetic sensor to detect a strength of a first magnetic field generated by the current flowing in the first flow path portion, a second magnetic sensor to detect a strength of a second magnetic field generated by the current flowing in the second flow path portion, and magnetic shield bodies between the first and second flow path portions and between the first and second magnetic sensors.

Abstract: A current sensor outputs an output voltage in accordance with a magnitude of a current to be measured. The current sensor includes a conductor through which a current flows, magnetic sensors, and correctors. The magnetic sensors detect a strength of a magnetic field generated by the current and output an output voltage corresponding to the strength of the magnetic field as the output voltage from the current sensor. The correctors each correct fluctuations in magneto-electric conversion gains of the magnetic sensors caused by a change in an ambient temperature and fluctuations in the output voltages from the magnetic sensors caused by deformation of the conductor due to a change in the ambient temperature.

Abstract: A current sensor includes a conductor through which a current to be measured flows, and first and second magnetic sensor elements that detect an intensity of a magnetic field generated by the current. The conductor includes first and second flow portions through which the current flows after the current is shunted. The first and second magnetic sensor elements are provided between the first and second flow portions in a thickness direction of the conductor. At least a portion of each of the first and second magnetic sensor elements is provided between the first and second flow portions in a width direction of the conductor. In the width direction of the conductor, a distance between a center portion of the first magnetic sensor element and a center portion of the second magnetic sensor element is less than or equal to a distance between the first flow portion and the second flow portion.

Abstract: A current sensor including first and second current sensor units. Conductors of the first and second current sensor units extend in a length direction and are parallel or substantially parallel to each other with a space therebetween. An arch-shaped portion and an inverted arch-shaped portion of the first current sensor unit are at different positions in the length direction from positions of an arch-shaped portion and an inverted arch-shaped portion of the second current sensor unit. When seen in a width direction perpendicular or substantially perpendicular to the length direction, first and second magnetic sensor elements of the first current sensor unit are outside an opening of the second current sensor unit and first and second magnetic sensor elements of the second current sensor unit are outside an opening of the first current sensor unit.