Abstract: An ultrasonic measurement system includes a display device configured to display an ultrasonic image and an ultrasonic probe electrically connectable to the display device. The ultrasonic probe includes an image capturing unit joined to or detachably attached to a first cable, the image capturing unit comprising a first optical lens to capture an image of a nearby object, and a probe head joined to or detachably attached to the first cable, the probe head being configured to transmit an ultrasonic beam toward a body surface of a subject and to receive a reflected wave from the body surface.

Abstract: Provided is a flux gate sensor comprising the following: a magnetic core having a first wiring layer formed on a board, a first insulating layer formed in such a way as to cover the aforementioned first wiring layer, and a magnetic core which is formed on the aforementioned first insulating layer and which has a central portion and an end portion that continues to the aforementioned central portion, that has a width larger than the width of the aforementioned central portion, and that is located on either side of the aforementioned central portion; a second insulating layer which covers the aforementioned magnetic core and which is formed on the aforementioned first insulating layer; and a second wiring layer formed on the aforementioned second insulating layer.

Abstract: Provided is a flux gate sensor comprising the following: a magnetic core having a first wiring layer formed on a board, a first insulating layer formed in such a way as to cover the aforementioned first wiring layer, and a magnetic core which is formed on the aforementioned first insulating layer and which has a central portion and an end portion that continues to the aforementioned central portion, that has a width larger than the width of the aforementioned central portion, and that is located on either side of the aforementioned central portion; a second insulating layer which covers the aforementioned magnetic core and which is formed on the aforementioned first insulating layer; and a second wiring layer formed on the aforementioned second insulating layer.

Abstract: Provided is a resin multilayer device having a balun, wherein the resin multilayer device comprises: a substrate; a first resin layer formed on the substrate; two balanced signal transmission lines that are electrically independently disposed on the first resin layer; a second resin layer formed on the two balanced signal transmission lines and the first resin layer; an unbalanced signal transmission line disposed on the second resin layer and facing the two balanced signal transmission lines; and a third resin layer formed on the unbalanced signal transmission line and the second resin layer.

Abstract: Provided is a resin multilayer device having a balun, wherein the resin multilayer device comprises: a substrate; a first resin layer formed on the substrate; two balanced signal transmission lines that are electrically independently disposed on the first resin layer; a second resin layer formed on the two balanced signal transmission lines and the first resin layer; an unbalanced signal transmission line disposed on the second resin layer and facing the two balanced signal transmission lines; and a third resin layer formed on the unbalanced signal transmission line and the second resin layer.

Abstract: A magnetic device comprises a magnetic element, a first magnetic field application device, and a second magnetic field application device. The first and second magnetic field applying means are disposed on mutually opposite sides of the magnetic element. The magnetic element is, for example, an element in which a soft magnetic film is formed in a meandering shape on a nonmagnetic substrate. The first and second magnetic field application device create a magnetic field in one direction from the first magnetic field application device toward the second magnetic field application device. The bias magnetic field in one direction is thereby applied to the entire soft magnetic film in the magnetic element disposed between the first and second magnetic field application device.

Abstract: A magnetic device comprises a magnetic element, a first magnetic field applying means, and a second magnetic field applying means. The first and second magnetic field applying means are disposed on mutually opposite sides of the magnetic element. The magnetic element is, for example, an element in which a soft magnetic film is formed in a meandering shape on a nonmagnetic substrate. The first and second magnetic field applying means create a magnetic field in one direction from the first magnetic field applying means toward the second magnetic field applying means. The bias magnetic field in one direction is thereby applied to the entire soft magnetic film in the magnetic element disposed between the first and second magnetic field applying means.

Abstract: A magnetic device comprises a magnetic element, a first magnetic field applying means, and a second magnetic field applying means. The first and second magnetic field applying means are disposed on mutually opposite sides of the magnetic element. The magnetic element is, for example, an element in which a soft magnetic film is formed in a meandering shape on a nonmagnetic substrate. The first and second magnetic field applying means create a magnetic field in one direction from the first magnetic field applying means toward the second magnetic field applying means. The bias magnetic field in one direction is thereby applied to the entire soft magnetic film in the magnetic element disposed between the first and second magnetic field applying means.

Abstract: A magnetic sensor module which includes: a semiconductor substrate including an integrated circuit for switching operation; a magneto-resistive element which is disposed on a first surface of the semiconductor substrate and has a magneto-sensitive direction in a direction along the first surface; and a bias magnetic field applying member provided on the semiconductor substrate and disposed on a surface which is parallel to the first surface, wherein: the bias magnetic field applying member is magnetized in a direction along the surface on which the bias magnetic field applying member is disposed; and when no external magnetic field is applied, the bias magnetic field applying member applies a bias magnetic field in the direction along the first surface on which the magneto-resistive element is provided.

Abstract: A magnetic sensor element has a hard magnetic film 2 formed on a nonmagnetic substrate 1, an insulating layer 3 covering the top of the hard magnetic film 2, and a soft magnetic film 4 formed on the insulating layer 3. The magnetization direction of the hard magnetic film 2 has an angle ? relative to the longitudinal direction of the soft magnetic film 4. It is preferable that, in plan view when viewing the nonmagnetic substrate 1 from above, the hard magnetic film 2 is broader than the region in which the soft magnetic film 4 is formed, and all of the region in which the soft magnetic film 4 is entirely overlaps with the region in which the hard magnetic film 2 is formed. According to the present invention, a magnetic sensor element for which a constant bias magnetic field is obtained can be provided.

Abstract: A magnetic device comprises a magnetic element, a first magnetic field applying means, and a second magnetic field applying means. The first and second magnetic field applying means are disposed on mutually opposite sides of the magnetic element. The magnetic element is, for example, an element in which a soft magnetic film is formed in a meandering shape on a nonmagnetic substrate. The first and second magnetic field applying means create a magnetic field in one direction from the first magnetic field applying means toward the second magnetic field applying means. The bias magnetic field in one direction is thereby applied to the entire soft magnetic film in the magnetic element disposed between the first and second magnetic field applying means.

Abstract: A method for detecting a connector disengagement of an optical fiber amplifier and a transmission optical fiber connected thereto, the optical fiber amplifier including a doped optical fiber and a pumping light source, and a transmission optical fiber including at least one connecting portion connected to an output of the optical fiber amplifier, includes the steps of: measuring a reflection from the transmission optical fiber to the optical fiber amplifier; and comparing the reflection to an allowable range between a first threshold that is greater than a predetermined reflection in the absence of a connector disengagement, and a second threshold that is smaller than the predetermined reflection in the absence of a connector disengagement; determining that there is no connector disengagement when the measured reflection is within the allowable range; and determining that there is a connector disengagement otherwise.

Abstract: A method for detecting a connector disengagement of an optical fiber amplifier and a transmission optical fiber connected thereto, the optical fiber amplifier including a doped optical fiber and a pumping light source, and a transmission optical fiber including at least one connecting portion connected to an output of the optical fiber amplifier, includes the steps of: measuring a reflection from the transmission optical fiber to the optical fiber amplifier; and comparing the reflection to an allowable range between a first threshold that is greater than a predetermined reflection in the absence of a connector disengagement, and a second threshold that is smaller than the predetermined reflection in the absence of a connector disengagement; determining that there is no connector disengagement when the measured reflection is within the allowable range; and determining that there is a connector disengagement otherwise.

Abstract: In an optical amplifier using a rare earth element-doped optical fiber such as an erbium-doped optical fiber, a variation of amplification gain resulting from temperature change is suppressed and the gain-temperature characteristic is enhanced. Moreover, the quantity of temperature compensation in the gain is easily adjustable. Light from an excitation light source is input to an optical fiber for optical amplification comprising a rare earth element-doped optical fiber, via a temperature compensation optical fiber comprising a rare earth element-doped optical fiber such as an erbium-doped optical fiber. By changing the length of this temperature compensation optical fiber, the quantity of temperature compensation is finely adjusted.