Tdk Corporation

Ricoh Company, Ltd.

Kabushiki Kaisha Toshiba

Nihon Kohden Corporation

Toshiba Infrastructure Systems & Solutions Corporation

Tokyomirai Co., Ltd.

Keisuke Uchida

Hiraku Hirabayashi

Kazuya Watanabe

Masaki Nagata

Kohei Honma

Tsuyoshi Umehara

Hayato Miyashita

Yongfu Cai

Shinji Aoki

Takeshi Akiyama

Kenzo Makino

Satoshi Hatori

Yoshihiro Norikane

Yoshihiro Sugo

Sunao Takeda

Toshihide Suto

Tetsuya Sonoda

Kazumi Suzuki

Hideki Kosugi

Nobuaki Onagi

Ichiro Kadota

Kenichi Takehara

Yasutomo Aman

Junya Takigawa

Yasuaki Iijima

Yohei Hirota

Andrew Mwaniki Mulwa

Masami Nishida

Yuko Sekiguchi

Tomomi Tsuboi

A position detection device includes a first position detector, a second position detector, and a signal generator. The first position detector includes a first magnetic field generation unit, a second magnetic field generation unit, and a first magnetic sensor. The second position detector includes a third magnetic field generation unit, a fourth magnetic field generation unit, and a second magnetic sensor. The positions of the second and fourth magnetic field generation units vary in response to variations in a detection-target position. The signal generator generates a position detection signal, which is the sum of a first detection signal generated by the first magnetic sensor and a second detection signal generated by the second magnetic sensor. Each of the first and second position detectors includes a bias magnetic field generation unit.

Position detection device

Provided is a magnetic field detection device that includes a first and second soft magnetic bodies, and a magnetic detector. The first and second soft magnetic bodies extend along a first plane and are disposed in confronted relation in a third direction. The first plane includes both a first direction and a second direction orthogonal to the first direction. The third direction is orthogonal to both the first and second directions. The magnetic detector is provided between the first and second soft magnetic bodies in the third direction.

Magnetic field detection device

The magnetic sensor of the invention has an element portion that is elongate, that exhibits magnetoresistive effect and that has a magnetically sensitive axis in a direction of a short axis thereof. The element portion is non-oval and can be arranged in an imaginary ellipse, wherein the imaginary ellipse has a major axis that connects both ends of the element portion with regard to a direction of a long axis thereof to each other and a minor axis that connects both ends of the element portion with regard to a direction of the short axis thereof to each other, as viewed in a direction that is perpendicular both to the short axis and to the long axis of the element portion.

Magnetic sensor with an elongated element

A magnetic sensor includes a magnetic field converter, a magnetic field detector, and a plurality of shields aligned in a Y direction. The magnetic field converter includes a plurality of yokes. Each yoke has a shape elongated in the Y direction, and is configured to receive an input magnetic field component in a direction parallel to a Z direction and to output an output magnetic field component in a direction parallel to an X direction. The magnetic field detector includes a plurality of trains of elements. Each train of elements includes a plurality of MR elements that are aligned in the Y direction along one yoke and connected in series. Each shield has such a shape that its maximum dimension in the Y direction is smaller than its maximum dimension in the X direction.

Magnetic sensor and magnetic sensor system

A position detection device includes a magnet that generates a magnetic field to be detected, and a magnetic sensor. The magnetic sensor detects the magnetic field to be detected and generates a detection value corresponding to the position of the magnet. The magnetic field to be detected has a first direction that changes within a first plane, at a reference position in the first plane. The magnetic sensor includes four MR elements. Each of the MR elements includes a first magnetic layer having first magnetization that can change in direction within a second plane corresponding to the each of the MR elements. The first plane and the second plane intersect at a dihedral angle α other than 90°. A detection value depends on the direction of the first magnetization.

The magnetic sensor can prevent an increase of a positional detection error of a subject/object even in the case of applying an external magnetic field with a magnetic field intensity exceeding a predetermined range. A magnetic sensor is equipped with a magnetoresistive effect element (MR element)that can detect an external magnetic field and a soft magnetic body shield. The soft magnetic body shield(s)are/is positioned above and/or below the MR elementin a side view, and the size of the MR elementis physically included within a perimeter of the soft magnetic body shield

Magnetic sensor

A magnetic field detection device, containing a) a first soft magnetic body containing a1) a first plate including a first surface having a first outer edge; and a2) a first protrusion disposed directly or indirectly on the first surface of the first plate at a first arrangement position set back from the first outer edge, the first protrusion including a first tip on an opposite side to the first surface; and b) a magnetic detector provided in a vicinity of the first tip, wherein the magnetic detector has a magnetic sensing direction along the first surface, and the first protrusion is capable of bending a direction of a first magnetic flux, which comes into the first plate, along the first surface.

The present invention enables the energy conversion efficiency of installed equipment and the like to be further improved. An energy conversion efficiency improvement deviceincludes: a first antennawhich is formed by winding a conducting wire, the two ends of the conducing wire being connected to a direct-current power source; an LC circuit unitwhich is connected to the conducting wire constituting the first antenna, and which includes at least one LC module obtained by connecting an inductance element and a capacitor element in series or in parallel; a joined material portionobtained by joining at least two different types of materials together; and a horn componentwhich comprises a conductor, is formed with line symmetry across a central axis, and is formed with a shape having an external diameter that increases in one direction along the central axis.

Energy conversion efficiency improvement device

Growing community of inventors

Tokyo, Japan

Keisuke Uchida