Abstract: An ultrasonic receiver encompasses a resin horn, a piezoelectric element provided at a tip of the resin horn exposed to outside, a stealth amplifier disposed at a predetermined minimum distance from the piezoelectric element, embedded in the resin horn and arranged in a behind space to which a shape of the piezoelectric element is projected, configured to change reflection characteristic of a reflection wave reflected by the stealth amplifier, and an input connection member electrically connecting between the piezoelectric element and the stealth amplifier. The predetermined minimum distance is a distance determined by design as a theoretical minimum value of an input stray-capacitance.

Abstract: A bond magnet includes filaments bonded with each other to form a shape of the bond magnet. Each of the filaments is a filamentous member including a resin material and magnetic powder dispersed in the resin material, and has magnetic anisotropy for high degree of freedom of magnetic flux direction and high surface magnetic flux density on a working surface.

Abstract: A motor includes a rotation shaft, a rotor, and a stator. The rotor includes a rotor core and magnetic pole portions respectively including permanent magnets embedded in the rotor core. The magnetic pole portions have polarities that differ alternately in a circumferential direction. A projection projecting radially outward from an outer circumferential portion of the rotor core is arranged between the magnetic pole portions having different polarities. In a radial opposing relationship of the rotor core and the teeth taken at different times while the rotor is revolved once, at a certain time, a quantity of the teeth that oppose one of the magnetic pole portions and do not oppose the projection is greater than a quantity of the teeth that simultaneously oppose two of the magnetic pole portions adjacent to each other in the circumferential direction and the projection located in between the magnetic pole portions.

Abstract: A motor includes a rotation shaft, a rotor, and a stator. The rotor includes a rotor core and magnetic pole portions respectively including permanent magnets embedded in the rotor core. The magnetic pole portions have polarities that differ alternately in a circumferential direction. A projection projecting radially outward from an outer circumferential portion of the rotor core is arranged between the magnetic pole portions having different polarities. In a radial opposing relationship of the rotor core and the teeth taken at different times while the rotor is revolved once, at a certain time, a quantity of the teeth that oppose one of the magnetic pole portions and do not oppose the projection is greater than a quantity of the teeth that simultaneously oppose two of the magnetic pole portions adjacent to each other in the circumferential direction and the projection located in between the magnetic pole portions.

Abstract: A rotor with four axially stacked rotor cores, and a plurality of field magnets interposed between them. Each rotor core includes a rotor-side claw-shaped magnetic pole. Each rotor-side claw-shaped magnetic poles are respectively extending from and formed on each rotor core at equal angle intervals. Tip end surfaces of the first and third rotor-side claw-shaped magnetic pole abut against or are closely opposed to each other axially. Tip end surfaces of the second and fourth rotor-side claw-shaped magnetic poles abut against or are closely opposed to each other in the axial direction. The plurality of field magnets are magnetized in the axial direction such that the field magnets causes the first and third rotor-side claw-shaped magnetic poles to function as first magnetic poles, and cause the second and fourth rotor-side claw-shaped magnetic poles to function as second magnetic poles.

Abstract: This motor includes a two-layer rotor, a two-layer stator and a control unit. An A-phase rotor includes a pair of rotor cores and a field magnet. A B-phase rotor includes a pair of rotor cores and a field magnet. An A-phase stator includes a pair of stator cores and an A-phase winding. A B-phase stator includes a pair of stator cores and a B-phase winding. The control unit controls an A-phase input voltage applied to the A-phase winding, and a B-phase input voltage applied to the B-phase winding. The relative arrangement angle of the A-phase stator and the A-phase rotor relative to the B-phase stator and the B-phase rotor is set to an electrical angle of 90 degrees. The control unit applies a leading phase angle to the basic voltage waveforms of the A-phase input voltage and the B-phase input voltage, to set the energization width to at most 180 degrees.

Abstract: A motor includes a rotor and a stator. The rotor includes a first rotor core including a plurality of first claw-like magnetic poles, a second rotor core including a plurality of second claw-like magnetic poles, and a magnetic field magnet arranged between the first and second rotor cores. The first and second claw-like magnetic poles are alternately arranged in a circumferential direction. The magnetic field magnet causes the first and second claw-like magnetic poles to function as magnetic poles different from each other. The stator includes a first stator core including a plurality of first claw-like magnetic poles, a second stator core including a plurality of second claw-like magnetic poles, and a coil section arranged between the first and second stator cores. The stator is configured to cause the first and second claw-like magnetic poles of the stator to function as magnetic poles different from each other and switch polarities of the magnetic poles on the basis of energization to the coil section.

Abstract: A motor control device controls a two-phase motor. The two-phase motor obtains a combined torque, which serves as an output torque. The A-phase and B-phase motor portions being joined having a phase difference in terms of structure. The motor control device sets each of A-phase and B-phase drive currents supplied to the A-phase and B-phase motor portions to control the two-phase motor. The motor control device includes a fundamental wave setting unit that sets a sinusoidal fundamental wave current of the A-phase and B-phase drive currents, and a superimposing wave setting unit that sets a high-order harmonic current superimposed on the fundamental wave current. The superimposing wave setting unit sets the high-order harmonic current of at least one of “4n+1”th-order and “4n?1”th-order to reduce a component of “4n”th-order in torque pulsation of the combined torque, and “n” is a natural number.

Abstract: A pneumatic tire whose position when mounted on a vehicle is specified has a tread portion 2 having an outside tread edge Teo, an inside tread edge Tei, an outside crown land region 6, and an inside crown land region 7. In a meridian cross-section of the tire including the rotational axis of the tire in its regular state mounted on a regular rim, inflated to a regular pressure and loaded with no tire load, the outside crown land region 6 and the inside crown land region 7 each have a tread convexed outwardly in the tire radial direction, and the radius of curvature R1 of the tread of the outside crown land region 6 is greater than the radius of curvature R2 of the tread of the inside crown land region 7.

Abstract: A pneumatic tire comprises a tread portion 2 provided with two shoulder main grooves 3, a crown main grooves 4, two shoulder land zones 8, and two middle land zones 7. The shoulder land zones 8 are each provided with shoulder lateral grooves 11. The middle land zones 7 are each provided with middle narrow grooves 10. Each of the middle narrow grooves 10 comprises a sipe-like narrow portion 12 whose groove width is less than 2 mm, and a wide portion 14 whose groove width is not less than 2 mm. The wide portion 14 includes an axially outer wide portion 15 formed at the axially outer end of the middle narrow groove 10.

Abstract: A substrate includes a support layer, a column-shaped first bump, and a second bump. The support layer has a main surface. The first bump is filled with a first conductive metal and also has a first upper surface and a side surface. The second bump includes a plurality of fine particles formed of a second conductive metal and also has a third portion configured to cover the first upper surface and a fourth portion configured to cover a part of the side surface. The first bump is disposed on the main surface, or the first bump is connected to an electrode disposed on the main surface. The second bump has a convex second upper surface. A height of the fourth portion in a direction perpendicular to the first upper surface is smaller than that of the first bump.

Abstract: A motor includes a rotor and a stator. The rotor includes a first rotor core including a plurality of first claw-like magnetic poles, a second rotor core including a plurality of second claw-like magnetic poles, and a magnetic field magnet arranged between the first and second rotor cores. The first and second claw-like magnetic poles are alternately arranged in a circumferential direction. The magnetic field magnet causes the first and second claw-like magnetic poles to function as magnetic poles different from each other. The stator includes a first stator core including a plurality of first claw-like magnetic poles, a second stator core including a plurality of second claw-like magnetic poles, and a coil section arranged between the first and second stator cores. The stator is configured to cause the first and second claw-like magnetic poles of the stator to function as magnetic poles different from each other and switch polarities of the magnetic poles on the basis of energization to the coil section.

Abstract: A motor includes a rotor and a stator. The rotor includes a first rotor core including a plurality of first claw-like magnetic poles, a second rotor core including a plurality of second claw-like magnetic poles, and a magnetic field magnet arranged between the first and second rotor cores. The first and second claw-like magnetic poles are alternately arranged in a circumferential direction. The magnetic field magnet causes the first and second claw-like magnetic poles to function as magnetic poles different from each other. The stator includes a first stator core including a plurality of first claw-like magnetic poles, a second stator core including a plurality of second claw-like magnetic poles, and a coil section arranged between the first and second stator cores. The stator is configured to cause the first and second claw-like magnetic poles of the stator to function as magnetic poles different from each other and switch polarities of the magnetic poles on the basis of energization to the coil section.

Abstract: A solid-state imaging device includes a first layer, a second layer, a plurality of first microlenses, and a plurality of second microlenses. A first light blocking film of the second layer is arranged in a region corresponding to the plurality of photoelectric conversion elements of the first layer. The plurality of first microlenses are arranged in a region, which corresponds to the plurality of photoelectric conversion elements, on the first principal surface of the first layer. The plurality of second microlenses are arranged in a region which is different from a region corresponding to the first light blocking film in a fourth principal surface of the second layer and which corresponds to a first light transmission layer of the first layer.

Abstract: A motor comprises an A-phase stator unit, a B-phase stator unit, and a rotor. The phase stator unit and the B-phase stator unit respectively contain a coil unit and a pair of stator cores, each pair of stator cores having a plurality of claw-shaped magnetic poles. The rotor comprises at least two permanent magnets facing the claw-shaped magnetic poles of the A-phase stator unit and the claw-shaped magnetic poles of the B-phase stator unit, respectively. The A-phase stator unit and the B-phase stator unit are provided side by side in the axial direction, displaced from one another by a prescribed electrical angle. The two permanent magnets are arranged side by side in the axial direction, displaced from one another by a prescribed electrical angle. The direction of displacement between the A-phase stator unit and the B-phase stator unit is the opposite of the direction of displacement between the two permanent magnets.

Abstract: A solid-state imaging device includes a first substrate and a second substrate stacked on the first substrate. The first substrate has a first semiconductor layer including a plurality of first photoelectric conversion elements and a plurality of openings. The second substrate has a second semiconductor layer including a plurality of second photoelectric conversion elements. The plurality of openings penetrate the first semiconductor layer. Each of the plurality of second photoelectric conversion elements is disposed in a region corresponding to any one of the plurality of openings.

Abstract: This motor includes a two-layer rotor, a two-layer stator and a control unit. An A-phase rotor includes a pair of rotor cores and a field magnet. A B-phase rotor includes a pair of rotor cores and a field magnet. An A-phase stator includes a pair of stator cores and an A-phase winding. A B-phase stator includes a pair of stator cores and a B-phase winding. The control unit controls an A-phase input voltage applied to the A-phase winding, and a B-phase input voltage applied to the B-phase winding. The relative arrangement angle of the A-phase stator and the A-phase rotor relative to the B-phase stator and the B-phase rotor is set to an electrical angle of 90 degrees. The control unit applies a leading phase angle to the basic voltage waveforms of the A-phase input voltage and the B-phase input voltage, to set the energization width to at most 180 degrees.

Abstract: It is a pneumatic tire 1 which is provided with a pair of shoulder land portions 4A defined between shoulder main grooves 3A and tread edges 2t by having the grooves 3A. At least one of the shoulder land portions 4A is provided with a plurality of shoulder lug grooves 5 and a plurality of shoulder sipes 6. The shoulder lug grooves 5 include first shoulder lug grooves 5A extending axially inward from the tread edge 2t and terminating without reaching the shoulder main groove 3A. The shoulder sipes 6 include first shoulder sipes 6A extending axially inward from the axially inner ends 5Ai of the first shoulder lug grooves 5A and connected to the shoulder main groove 3A, and second shoulder sipes 6B intersecting the first shoulder sipes 6A and extending in the tire circumferential direction.

Abstract: A brushless motor includes a first rotor core, a second rotor core, and a field magnet member. The first rotor core includes primary projecting pieces arranged along a circumferential direction at equal intervals. The second rotor core has the same shape as the first rotor core, and includes secondary projecting pieces arranged along the circumferential direction at equal intervals. The secondary projecting pieces are positioned between the primary projecting pieces that are adjacent to one another in the circumferential direction. The field magnet member is arranged between the first rotor core and the second rotor core. The field magnet member is magnetized along an axial direction to generate primary magnetic poles in the primary projecting pieces, and generate secondary magnetic poles in the secondary projecting pieces. A rotor includes the first rotor core, the second rotor core, and the field magnet member.

Abstract: A rotor with four axially stacked rotor cores, and a plurality of field magnets interposed between them. Each rotor core includes a rotor-side claw-shaped magnetic pole. Each rotor-side claw-shaped magnetic poles are respectively extending from and formed on each rotor core at equal angle intervals. Tip end surfaces of the first and third rotor-side claw-shaped magnetic pole abut against or are closely opposed to each other axially. Tip end surfaces of the second and fourth rotor-side claw-shaped magnetic poles abut against or are closely opposed to each other in the axial direction. The plurality of field magnets are magnetized in the axial direction such that the field magnets causes the first and third rotor-side claw-shaped magnetic poles to function as first magnetic poles, and cause the second and fourth rotor-side claw-shaped magnetic poles to function as second magnetic poles.