This optical scanning device includes: a shaft part to which a mirror part is connected; a movable magnet; a base part; a ball bearing; a core unit that has a core body and a coil body and rotationally drives the movable magnet; and a magnet position holding member that is a magnetic body provided facing the movable magnet and magnetically attracts the movable magnet to a reference position. The core unit is disposed on the outer surface side of one wall section of a pair of wall sections of the base part. An angle sensor unit for detecting the rotation angle position of the shaft part is disposed between the core unit and the one wall section.

A torque motor assembly includes a shell which has a first wall and a second wall which defines a cavity. A torque motor is positioned at least partially within the cavity. At least one compliant pad is positioned between the first wall and the torque motor and is configured to trap at least one wire within the shell. A housing for a torque motor and a method of assembling a torque motor assembly are also disclosed.

An electromagnetic system includes a magnetic yoke, a coil mounted in the magnetic yoke, a lower iron core disposed in a lower portion of the coil, a top plate disposed above the coil, an upper iron core having a lower portion disposed in the coil and an upper portion extending through the top plate, an armature disposed above the top plate and fixedly connected to the upper iron core, a magnetic isolation ring disposed between the upper iron core and the top plate, and a plurality of balls each rolling in one of a plurality of first curved grooves of the armature and one of a plurality of second curved grooves of the top plate. The upper iron core moves in a vertical direction. A force applied on the armature by the ball is inclined to a central axis of the upper iron core to drive the armature to rotate.

A segmented alphanumeric includes a display panel, at least one linearly actuated platform, and display elements. Each display element passes through an orifice in the display panel to generate protruded and segmented alphanumeric characters in combination with other extended display elements. A microactuator array is displaceable by the linearly actuated platform and includes electromagnets and rotors. Each rotor is mounted for rotation in at least one direction between an active state and an inactive state by at least one associated electromagnet. Each display element is displaced through the orifice by actuation of the linearly actuated platform via a respective rotor when the respective rotor is rotated into its active state and to evade displacement by the rotor when the rotor is rotated into its inactive state.

Provided is an information output apparatus including one or more information output units, wherein each information output unit includes a coil arranged to be connected to a power source, such that a current flows in the coil; a base unit configured to accommodate the coil; and a driving indicator, which is arranged in the base unit to be apart from and close to the coil to be driven by a current flowing in the coil and is configured to move in a first direction toward the coil and a direction opposite thereto to rotate while being connected to the base unit and to move in a second direction crossing the first direction to be recognized by a user.

Provided is an information output apparatus including one or more information output units, wherein each information output unit includes a coil arranged to be connected to a power source, such that a current flows in the coil; a base unit configured to accommodate the coil; and a driving indicator, which is arranged in the base unit to be apart from and close to the coil to be driven by a current flowing in the coil and is configured to move in a first direction toward the coil and a direction opposite thereto to rotate while being connected to the base unit and to move in a second direction crossing the first direction to be recognized by a user.

A light path adjustment mechanism includes a support, a carrier, an optical plate member and a plurality of actuators. The carrier is disposed on the support and connected to the support via a first elastic member and a second elastic member. The carrier includes a first side, a second side opposite the first side, a third side and a fourth side opposite the third side, and each of the third side and the fourth side is located between the first side and the second side. The actuators are disposed on at most three sides of the first side, the second side, the third side and the fourth side, and the actuators are disposed at least on the first side and the third side.

A rotary reciprocating drive actuator includes: a movable body including a magnet fixed to a shaft portion; a fixing body including a plurality of magnetic poles, a first magnetic attraction member, and a second magnetic attraction member that are disposed to face an outer circumference of the magnet;, the plurality of magnetic poles including a plurality of coils, the first magnetic attraction member being configured to generate a first magnetic attraction force, the second magnetic attraction member being configured to generate a second magnetic attraction force, in which a magnetic flux passing through the plurality of magnetic poles is generated by energization of the plurality of coils, causing the reciprocating rotation of the movable body about an axis of the shaft portion with reference to the rotational center position by electromagnetic interaction between the magnetic flux and the magnet.

An optical assembly includes a movable body including an optical element, a fixed body that is located around the movable body and swingably supports the movable body, and a swing mechanism that causes the movable body to swing about a swing axis with respect to the fixed body. The swing mechanism is located in a first direction orthogonal to the swing axis, and the swing mechanism includes a magnet on the movable body and a coil on the fixed body. The fixed body includes a circuit board that is located on one side in the first direction of the fixed body and electrically connected to the coil, a reinforcing plate that is on the circuit board and includes a depression depressed toward another side in the first direction, and a magnetic body that is located in the depression and at least partially overlaps the magnet.

A disclosed reluctance actuator includes a magnetizable stator, at least one coil, and a yoke. The coil is configured to generate a magnetic field in the stator and the yoke is configured to partially close the magnetic flux of the stator. The yoke is further configured as a movable element that performs lifting/tilting movements. An actuator system including a non-magnetic housing and a reluctance actuator is also disclosed. In the actuator system, the reluctance actuator may be at least partially located in the non-magnetic housing. A method of performing lifting/tilting movements of the yoke of a reluctance actuator is also disclosed. The method includes controlling a current in the at least one coil of the reluctance actuator to thereby generate a magnetic field in the stator. The magnetic field generates a lifting/tilting movement of the yoke due to interaction between the magnetic field and the yoke.