Abstract: Provided are a lens device, an imaging apparatus, and a filter unit capable of suppressing occurrence of ghosts and flares. The lens device includes a first optical filter and a second optical filter in order from an object side in an optical path. The first optical filter is composed of an optical filter (for example, a band-pass filter) that has a light transmission band in a specific wavelength region. The second optical filter is composed of an optical filter (band-stop filter) that has a light absorption band in a wavelength region which is different from the light transmission band of the first optical filter.

Abstract: A reference region determination device is for determining a reference region to be stored in a reference image buffer, and includes: a motion vector acquisition portion configured to acquire a motion vector for each one of already encoded blocks; a position change amount derivation portion configured to derive a position change amount for the reference region based on the acquired motion vectors; and a reference region determination portion configured to determine a position of the reference region to be used in encoding of a next block for encoding after the already encoded blocks based on the position change amount.

Abstract: A porous membrane having a cross-linked ceramic coating on at least one side thereof is disclosed. The coated porous membrane may be used as a battery separator, particularly a battery separator for a lithium ion battery. The coating includes at least a cross-linker and a ceramic. The cross-linker may be a particulate polymeric binder cross-linker, a PEO (PEG) cross-linker, or a POSS cross-linker. The coated membrane exhibits improved properties that may be favorable for its use as a battery separator. For example, the coated porous membrane may exhibit improved shrinkage properties and high temperature resistance.

Abstract: A columnar core main body including a plurality of laminated cores having the same shape and that has a shaft hole on a rotation center side, a plurality of permanent magnets penetrate around the shaft hole of the core main body in an axial direction and is fixed in each of a plurality of magnet accommodating holes arranged in a circular shape in a circumferential direction, and protrusions in the magnet accommodating holes in one-to-one correspondence. The protrusion protrudes along the circumferential direction and comes into pressure contact with the permanent magnet accommodated in the magnet accommodating hole from the radially inner side. Each of the protrusions is defined by a protrusion forming space extending along the circumferential direction from a radially inner side surface of each magnet accommodating hole, and at least one of the protrusion and the protrusion forming space is on the magnetic pole center.

Abstract: A method includes forming a first wire layer wound on the insulator and a second wire layer wound on the first wire layer by winding the wire on the insulator. If (L1+D)tan(?/2)cos(?/2)?A cos(?/2)>D, the first wire layer is formed by winding the wire on an upper surface of the step portion, where A is B/2+(1+?3/2)D, B is a width of the insulator, D is a wire diameter, ? is an angle formed by the central axes of circumferentially adjacent teeth, L1 is a distance from a central axis of the stator to an end of the upper surface of the step portion on the inner side in the radial direction, and L2 is a distance from the central axis of the stator to an end of the upper surface of the step portion on the outer side in the radial direction.

Abstract: A brushless motor includes: a stator including an annular stator core and first through twelfth teeth provided circumferentially on an inner circumference of the stator core in a sequential order; first through twelfth coils wound around the first through twelfth teeth, respectively, and forming a delta connection; and a rotor provided at a center of the stator. The first through twelfth coils are configured such that: the twelfth, first, six, and seventh coils in series connection form a W-phase; the eighth, ninth, second, and third coils in series connection form a U-phase, the fourth, fifth, tenth, and eleventh coils in series connection form a V-phase, coils of different phases adjacent to each other in an arrangement on the teeth are wound in the same direction, and coils of the same phase adjacent to each other are wound in opposite directions.

Abstract: A method includes forming a first wire layer wound on the insulator and a second wire layer wound on the first wire layer by winding the wire on the insulator. If (L1+D)tan(?/2)cos(?/2)?A cos(?/2)>D, the first wire layer is formed by winding the wire on an upper surface of the step portion, where A is B/2+(1+?3/2)D, B is a width of the insulator, D is a wire diameter, ? is an angle formed by the central axes of circumferentially adjacent teeth, L1 is a distance from a central axis of the stator to an end of the upper surface of the step portion on the inner side in the radial direction, and L2 is a distance from the central axis of the stator to an end of the upper surface of the step portion on the outer side in the radial direction.

Abstract: A brushless motor includes: a stator including an annular stator core and first through twelfth teeth provided circumferentially on an inner circumference of the stator core in a sequential order; first through twelfth coils wound around the first through twelfth teeth, respectively, and forming a delta connection; and a rotor provided at a center of the stator. The first through twelfth coils are configured such that: the twelfth, first, six, and seventh coils in series connection form a W-phase; the eighth, ninth, second, and third coils in series connection form a U-phase, the fourth, fifth, tenth, and eleventh coils in series connection form a V-phase, coils of different phases adjacent to each other in an arrangement on the teeth are wound in the same direction, and coils of the same phase adjacent to each other are wound in opposite directions.