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 optical component including: a first block having a first refractive index and a first reflective surface; a first light absorbing member containing a first metal ion that absorbs light having a first specific wavelength and has a second refractive index different from the first refractive index; a first buffer layer between and in contact with each of the first light absorbing member and the first block, and having a third refractive index having a value between the first refractive index and the second refractive index, wherein the first light absorbing member, the first buffer layer, and the first block are arranged in this order in a first direction such that first block reflects light traveling in the first direction in a second direction different from the first direction on the first reflective surface.

Abstract: A composite capacitor that includes a first capacitor and a second capacitor. Each of plural first columnar conductors and each of plural second columnar conductors have a nano-size outer diameter. The composite capacitor includes a connecting conductor layer and a reinforcement conductor. The reinforcement conductor is located between a first counter electrode layer and a second counter electrode layer of the first capacitor and the second capacitor, respectively, and is connected to each of the first counter electrode layer, the second counter electrode layer, and the connecting conductor layer. The material forming the reinforcement conductor is the same as each of the first counter electrode layer and the second counter electrode layer and is different from the material forming the connecting conductor layer.

Abstract: 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.

Abstract: A semiconductor device includes a chip having a main surface, a groove structure including a groove formed at the main surface, a source electrode that is embedded in the groove at a bottom side of the groove and that has a projection portion on one side and a projection portion on the other side both of which protrude toward an opening side of the groove, and a gate electrode embedded between a pair of the projection portions at the opening side of the groove, and a source via electrode on one side and a source via electrode on the other side that are connected to the projection portion on the one side and the projection portion on the other side, respectively, on the groove structure.

Abstract: A composite capacitor that includes a plurality of capacitors and an insulating section. The plurality of capacitors are stacked on each other. The insulating section covers peripheral surfaces of the plurality of capacitors about a central axis of the plurality of capacitors, the stacking direction of the plurality of capacitors being a direction of the central axis. Each of the plurality of capacitors includes a support electrode layer, plural columnar conductors, a dielectric layer, and a counter electrode layer. Each of the plural columnar conductors has a nano-size outer diameter. The plurality of capacitors include a first capacitor and a second capacitor connected in parallel with the first capacitor.

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: 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.

Abstract: A capacitor is provided having a plurality of first conductive columnar portions that each have a nanosized outer diameter. Moreover, each of a plurality of second conductive columnar portions also have a nanosized outer diameter. A conductive portion is disposed on a first dielectric layer and faces at least a part of each of the plurality of first conductive columnar portions with the first dielectric layer interposed therebetween. The conductive portion is also disposed on a second dielectric layer and faces at least a part of each of the plurality of second conductive columnar portions with the second dielectric layer interposed therebetween. A tip of each of the second conductive columnar portions is located closer to a first support portion than a tip of each of the first conductive columnar portions.

Abstract: A semiconductor device includes a first conductivity type semiconductor layer having a first surface and a second surface opposite to the first surface and having an element portion formed in the first surface and an outer peripheral portion surrounding the element portion, a semiconductor element structure formed in the element portion, multiple guard ring trenches formed in the outer peripheral portion and each formed in the first surface of the semiconductor layer, and a second conductivity type outer peripheral portion impurity region formed in the outer peripheral portion, in which the multiple guard ring trenches include a first unit consisting of multiple guard ring trenches and a second unit consisting of multiple guard ring trenches arranged on the outside of the semiconductor layer relative to the multiple guard ring trenches belonging to the first unit, and in which the outer peripheral portion impurity region includes a first portion arranged below the multiple guard ring trenches belonging to the

Abstract: A capacitor that includes: a substrate; a fixing layer with a first main surface and a second main surface that face each other, the first main surface being in contact with a surface of the substrate; a plurality of fibrous core materials each having a first embedded in the fixing layer and a second end exposed from the fixing layer; a dielectric layer covering the second end of each of the plurality of fibrous core materials; and a conductor layer covering the dielectric layer, wherein a length of a part of each of the plurality of fibrous core materials embedded in the fixing layer is larger than a distance between a contact between the plurality of fibrous core materials and the second main surface of the fixing layer and the first main surface of the fixing layer.

Abstract: A capacitor that includes: a base material having: a substrate; a first conductive portion on at least one main surface of the substrate; and an insulating-resin layer on a surface of the first conductive portion; a plurality of fibrous conductive cores, a first end portion of each of the plurality of the fibrous conductive cores being in contact with the first conductive portion through the insulating-resin layer; a dielectric layer covering a portion of the plurality of the fibrous conductive cores exposed from the base material; a conductive polymer layer covering the dielectric layer such that gaps are provided in spaces between the plurality of the fibrous conductive cores; and a second conductive portion in contact with the conductive polymer layer at a second end portion of the plurality of the fibrous conductive cores.

Abstract: 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.

Abstract: A semiconductor device includes a semiconductor chip having a main surface, a first conductivity type drift region formed in a surface layer portion of the main surface, and a second conductivity type column region formed in a column shape extending in the thickness direction in the drift region, the column region having a lower end portion, an intermediate portion and an upper end portion, wherein the column region has a compensation region including a low concentration portion which is formed between the lower end portion and the intermediate portion, and a high concentration portion which is formed between the intermediate portion and the upper end portion, the compensation region in which a charge balance is compensated within an impurity concentration range between the low concentration portion and the high concentration portion.

Abstract: A semiconductor device includes a first conductivity type semiconductor layer having a first surface and a second surface opposite to the first surface and having an element portion formed in the first surface and an outer peripheral portion surrounding the element portion, a semiconductor element structure formed in the element portion, multiple guard ring trenches formed in the outer peripheral portion and each formed in the first surface of the semiconductor layer, and a second conductivity type outer peripheral portion impurity region formed in the outer peripheral portion, in which the multiple guard ring trenches include a first unit consisting of multiple guard ring trenches and a second unit consisting of multiple guard ring trenches arranged on the outside of the semiconductor layer relative to the multiple guard ring trenches belonging to the first unit, and in which the outer peripheral portion impurity region includes a first portion arranged below the multiple guard ring trenches belonging to the

Abstract: A semiconductor device includes a semiconductor chip which has a main surface, a first groove which is formed in the main surface and demarcates the main surface into a first region and a second region, a first insulating film which is formed on a wall surface of the first groove, a second groove which is formed in the main surface of the first region at an interval from the first groove, a second insulating film which covers an upper wall surface of the second groove and is thinner than the first insulating film, a third insulating film which covers a lower wall surface of the second groove and is thicker than the second insulating film, a third groove which is formed in the main surface of the second region at an interval from the first groove, a fourth insulating film, and a fifth insulating film.

Abstract: A rotational angle detection apparatus is provided with a magnet disposed so as to be rotatable integrally with an axis of rotation, having a substantially circular shape when viewed along the axis of rotation, and including a magnetization vector component in a direction orthogonal to the axis of rotation; a magnetic sensor that outputs a sensor signal on the basis of change in a magnetic field accompanying rotation of the magnet; and a rotational angle detector that detects a rotational angle of the rotating body on the basis of the sensor signal output by the magnetic sensor; wherein the magnet has a curved inclined surface with a concave shape along the axis of rotation from a prescribed position on the outer side in a radial direction toward the axis of rotation, and when a circular virtual plane orthogonal to the axis of rotation and centered at the axis of rotation is established at a position opposed to the curved inclined surface, the magnetic sensor is disposed at a position at which the amplitudes

Abstract: There is provided a semiconductor device including: a semiconductor layer including a main surface; a plurality of trenches including a plurality of first trench portions and a plurality of second trench portions, respectively; an insulating layer formed in an inner wall of each of the second trench portions; a first electrode buried in each of the second trench portions with the insulating layer interposed between the first electrode and each of the second trench portions; a plurality of insulators buried in the first trench portions so as to cover the first electrode; a contact hole formed at a region between the plurality of first trench portions in the semiconductor layer so as to expose the plurality of insulators; and a second electrode buried in the contact hole.

Abstract: A structural body that includes: a substrate; a plurality of fibrous materials, each of the plurality of fibrous material including a fibrous core material and a covering layer that covers the fibrous core material such that an exposed portion of the fibrous core material is formed at an end portion thereof; and an adhesive layer that bonds the substrate and the end portion of each of the plurality of fibrous materials to each other such that a boundary between the covering layer and the exposed portion is located inside the adhesive layer.

Abstract: A rotational angle detection apparatus is provided with a magnet disposed so as to be rotatable integrally with an axis of rotation, having a substantially circular shape when viewed along the axis of rotation, and including a magnetization vector component in a direction orthogonal to the axis of rotation; a magnetic sensor that outputs a sensor signal on the basis of change in a magnetic field accompanying rotation of the magnet; and a rotational angle detector that detects a rotational angle of the rotating body on the basis of the sensor signal output by the magnetic sensor; wherein the magnet has a curved inclined surface with a concave shape along the axis of rotation from a prescribed position on the outer side in a radial direction toward the axis of rotation, and when a circular virtual plane orthogonal to the axis of rotation and centered at the axis of rotation is established at a position opposed to the curved inclined surface, the magnetic sensor is disposed at a position at which the amplitudes