Abstract: An optical unit is provided for performing heat dissipation for an optical module. The optical unit includes a movable body having the optical module and a fixed body which holds the movable body in a displaceable state. The movable body includes a circuit board provided in the optical module and at least one heat radiation member disposed in a periphery of the optical module. The heat radiation member is connected with the circuit board in a heat-conductive manner.

Abstract: In a rotor of a motor or the like, in order to suppress scattering of a part of a magnet provided around a rotating shaft, the rotor has a cylindrical magnet through which the rotating shaft passes, a first holder which covers the magnet from one side in an axial direction of the rotating shaft and a second holder which covers the magnet from the other side in the axial direction. The magnet is press-fitted into a first body portion of the first holder and a second body portion of the second holder, and a first end of the first body portion and a second end of the second body portion are joined by welding or the like. An inner diameter of the first end and the inner diameter of the second end are larger than an outer diameter of the magnet.

Abstract: A drive device is provided and includes: a movable body including an attachment part, to which an optical module is attached; a fixed body; and a support part rotatably supporting the movable body about an optical axis of the optical module attached to the attachment part with respect to the fixed body. The movable body includes a movable body-side fixing part, to which a flexible printed circuit pulled out of the optical module is fixed. The fixed body includes a fixed body-side fixing part, to which the flexible printed circuit is fixed. And, a portion between the movable body-side fixing part and the fixed body-side fixing part in a region along an outer periphery of the fixed body is set as a region drawn around in an attitude causing a thickness direction of the flexible printed circuit to be directions both orthogonal to a direction of the optical axis.

Abstract: An optical unit is provided for performing heat dissipation for an optical module. The optical unit includes a movable body having the optical module and a fixed body which holds the movable body in a displaceable state. The movable body includes a circuit board provided in the optical module and at least one heat radiation member disposed in a periphery of the optical module. The heat radiation member is connected with the circuit board in a heat-conductive manner.

Abstract: A laser pointer may include a laser light emitter that emits a laser beam, a housing accommodating the laser light emitter; a vibration detection sensor that detects a vibration produced in the housing, a shake correction mechanism that changes a direction of the laser beam emitted by the laser light emitter, and a controller that controls the direction of the laser beam, which is changed by the shake correction mechanism, into a direction so as to offset the vibration detected by the vibration detection sensor. The controller may be configured to calculate a frequency of the vibration; calculate a movement amount of the vibration; determine whether a vibration applied to the housing is caused by a hand-shake based on the frequency of the vibration and the movement amount of the vibration; and activate the shake correction mechanism in response to a determination that the vibration is caused by a hand-shake.

Abstract: To draw a flexible printed circuit board in a small space with high flexibility in an optical unit with shake correction function. In an optical unit with rolling correction function, a first flexible printed circuit board for an imaging element is drawn around an optical axis of the optical unit with rolling correction function such that the first flexible printed circuit board is wound by substantially a turn in a circumferential direction at an identical height in an optical axis direction. Furthermore, in a portion wound in the circumferential direction (i.e., a connection part), one end and the other end in the circumferential direction are at an identical height in the optical axis direction. Furthermore, a second flexible printed circuit board for a rolling magnetic driving mechanism and a third flexible printed circuit board for a swing magnetic driving mechanism are also drawn in a similar manner.

Abstract: An optical unit with shake correction function capable of reducing a weight of a rotation member to be rotated in rolling correction. An optical unit with shake correction function includes: a movable member; a swing supporting mechanism supporting the movable member such that the movable member is able to swing; and a fixation member supporting the movable member via the swing supporting mechanism. The movable member includes: an imaging module; a rotation seat supporting the imaging module; a rotation supporting mechanism supporting the rotation seat such that the rotation seat is able to rotate on an optical axis of the imaging module; a supporting member supporting the rotation seat via the rotation supporting mechanism; and a rolling magnetic driving mechanism causing the rotation seat to rotate. The imaging module and the rotation seat configure the rotation member to be rotated by the rolling magnetic driving mechanism.

Abstract: To provide a rolling magnetic driving unit that can be employed for both of an optical unit with shake correction function that causes an optical module to swing and rotate and an optical unit with shake correction function that causes the optical module to rotate, a second unit (i.e., a rolling magnetic driving unit) includes: a rotation seat; and a fixation member that supports the rotation seat via a bearing mechanism. The rotation seat and the bearing mechanism configure a rotation-supporting mechanism. The rotation-supporting mechanism supports a holder, which supports the optical module such that the optical module is able to swing, such the holder is able to rotate on the axis. Furthermore, the second unit includes a rolling magnetic driving mechanism, which includes a rolling driving coil that is held by the rotation seat and a rolling driving magnet that is held by the fixation member.

Abstract: A laser pointer may include a laser light emitter that emits a laser beam, a housing accommodating the laser light emitter; a vibration detection sensor that detects a vibration produced in the housing, a shake correction mechanism that changes a direction of the laser beam emitted by the laser light emitter, and a controller that controls the direction of the laser beam, which is changed by the shake correction mechanism, into a direction so as to offset the vibration detected by the vibration detection sensor. The controller may be configured to calculate a frequency of the vibration; calculate a movement amount of the vibration; determine whether a vibration applied to the housing is caused by a hand-shake based on the frequency of the vibration and the movement amount of the vibration; and activate the shake correction mechanism in response to a determination that the vibration is caused by a hand-shake.

Abstract: An optical unit with rolling correction function is provided and performs rolling correction by fixing a circuit board on which an imaging element is mounted and a heat dissipating member to a rotation member, transmitting heat from the circuit board to the heat dissipating member, and rotating the rotation member. A rotation shaft of a rotation supporting mechanism is fixed to the rotation member via the heat dissipating member. Accordingly, it is possible to dissipate heat by transmitting heat that is generated from the imaging element, from the circuit board to the heat dissipating member, and then transmitting the heat from the heat dissipating member to the rotation shaft. The imaging element and the heat dissipating member overlap with the rotation shaft at an identical position when the imaging element and the heat dissipating member are seen from an optical axis direction.

Abstract: To draw a flexible printed circuit board in a small space with high flexibility in an optical unit with shake correction function. In an optical unit with rolling correction function, a first flexible printed circuit board for an imaging element is drawn around an optical axis of the optical unit with rolling correction function such that the first flexible printed circuit board is wound by substantially a turn in a circumferential direction at an identical height in an optical axis direction. Furthermore, in a portion wound in the circumferential direction (i.e., a connection part), one end and the other end in the circumferential direction are at an identical height in the optical axis direction. Furthermore, a second flexible printed circuit board for a rolling magnetic driving mechanism and a third flexible printed circuit board for a swing magnetic driving mechanism are also drawn in a similar manner.

Abstract: An optical unit with shake correction function capable of reducing a weight of a rotation member to be rotated in rolling correction. An optical unit with shake correction function includes: a movable member; a swing supporting mechanism supporting the movable member such that the movable member is able to swing; and a fixation member supporting the movable member via the swing supporting mechanism. The movable member includes: an imaging module; a rotation seat supporting the imaging module; a rotation supporting mechanism supporting the rotation seat such that the rotation seat is able to rotate on an optical axis of the imaging module; a supporting member supporting the rotation seat via the rotation supporting mechanism; and a rolling magnetic driving mechanism causing the rotation seat to rotate. The imaging module and the rotation seat configure the rotation member to be rotated by the rolling magnetic driving mechanism.

Abstract: An optical unit with rolling correction function is provided and performs rolling correction by fixing a circuit board on which an imaging element is mounted and a heat dissipating member to a rotation member, transmitting heat from the circuit board to the heat dissipating member, and rotating the rotation member. A rotation shaft of a rotation supporting mechanism is fixed to the rotation member via the heat dissipating member. Accordingly, it is possible to dissipate heat by transmitting heat that is generated from the imaging element, from the circuit board to the heat dissipating member, and then transmitting the heat from the heat dissipating member to the rotation shaft. The imaging element and the heat dissipating member overlap with the rotation shaft at an identical position when the imaging element and the heat dissipating member are seen from an optical axis direction.

Abstract: To provide a rolling magnetic driving unit that can be employed for both of an optical unit with shake correction function that causes an optical module to swing and rotate and an optical unit with shake correction function that causes the optical module to rotate, a second unit (i.e., a rolling magnetic driving unit) includes: a rotation seat; and a fixation member that supports the rotation seat via a bearing mechanism. The rotation seat and the bearing mechanism configure a rotation-supporting mechanism. The rotation-supporting mechanism supports a holder, which supports the optical module such that the optical module is able to swing, such the holder is able to rotate on the axis. Furthermore, the second unit includes a rolling magnetic driving mechanism, which includes a rolling driving coil that is held by the rotation seat and a rolling driving magnet that is held by the fixation member.

Abstract: A motor may include a rotor having a magnet and a stator having a stator core and a coil. The stator core is provided with salient poles, including a predetermined salient pole, separately formed in the circumferential direction, the salient poles are protruded to an inner side and face the magnet through a gap space, and the predetermined salient pole is wound around with the coil through a coil bobbin. The stator core is provided with a connecting part which connects end parts of the salient poles. The coil bobbin is provided with a body part around which the coil is wound and an insertion hole formed in the body part and into which the predetermined salient pole is inserted. The coil bobbin and the stator core engage with the other to restrain displacement of the coil bobbin to the inner side.

Abstract: A motor may include a rotor having a rotation shaft made of metal and a cylindrical permanent magnet fixed to the rotation shaft, and a stator facing a peripheral face of the permanent magnet and is electrically insulated from the rotation shaft. The peripheral face of the permanent magnet facing the stator and the rotation shaft are electrically connected with each other.

Abstract: A motor may include a rotor having a rotation shaft, a stator formed in a tube shape and disposed around the rotor, a bearing member rotatably supporting the rotor, and an end plate with a spring part urging the rotation shaft in the motor axial line direction and holding the bearing member between the stator and the end plate. The bearing member may include a plate-shaped part whose outer shape dimension is smaller than an inner shape dimension of the stator and at least a part of the plate-shaped part is located on an inner side of the stator and an engagement part protruded from the plate-shaped part to an outer side in a radial direction and is overlapped with an end face of the stator. The end plate may be overlapped with the plate-shaped part on an opposite side to the stator.

Abstract: A fluid dynamic bearing device includes a sleeve having a bearing hole into which a shaft is inserted, the sleeve rotatably supporting the shaft to make relative rotation about a center axis and a bearing housing made of a cold-rolled steel plate or a galvanized steel plate, the sleeve being received within the bearing housing. The bearing housing is filled with lubricating oil mainly composed of ester. A radial dynamic pressure bearing portion is provided between an outer circumferential surface of the shaft and an inner circumferential surface of the sleeve, the radial dynamic pressure bearing portion having radial dynamic pressure grooves for holding the lubricating oil as working fluid and for inducing a fluid dynamic pressure in the lubricating oil during the relative rotation. At least a surface region of the bearing housing remaining in contact with the lubricating oil is coated with a layer mainly composed of nickel.

Abstract: In spindle motors journaled on fluid-dynamic-pressure bearings, especially in such spindle motors employed in recording-disk drives in implementations that subject the drives to vibration and shock, sealing performance of a capillary seal formed between motor rotor-side and stator-side bearing surfaces, cohesiveness of oil-repellant on rotor-side/stator-side dry-area surfaces adjoining the capillary seal section, and motor inter-component adhesive strength are improved. The capillary-seal-constituting rotor-side/stator-side surface(s) are exposed to a plasma or to ultraviolet rays under predetermined conditions to improve the wettability of the surface(s) for the bearing fluid. The dry-area surface(s) are similarly irradiated so as to improve their wettability for the oil-repellant. Adhesively bonded component surfaces are likewise irradiated so as to improve their wettability for the adhesive, enhancing adhesive strength.

Abstract: A sleeve portion is inserted into a hole portion of a base bracket on which an adhesive of heat cure type is applied while a rotor portion and a stator portion are retained by a position determining jig. Then, the sleeve portion is initially affixed to the base bracket by a high frequency induction heating of an induction coil. Then, the initial affixation is cured completely in an oven. Since the adhesive of heat cure type is used, generation of outgass will be minimized and a manufacturing cost of the motor having such components will be reduced.