Abstract: A lens driving device according to an embodiment comprises: a bobbin wherein at least one lens is installed inside thereof and a first coil is installed on the outer circumferential surface thereof; a first magnet arranged around the bobbin so as to be opposite to the first coil; a housing for supporting the first magnet; upper and lower elastic members coupled with the bobbin and the housing; a first sensor for sensing displacement of the bobbin in the first direction; a second magnet arranged so as to be opposite to the first sensor; a base arranged to be spaced apart from the housing by a certain distance; a second coil arranged so as to be opposite to the first magnet; a circuit board whereon the second coil is installed; a plurality of support members for supporting the housing so as to be movable in the second and third directions which are orthogonal to the first direction with respect to the base and for connecting at least one of the upper and lower elastic members to the circuit board; and a second

Abstract: A VCM (voice coil motor) is disclosed, the VCM including: a rotor including a cylindrical bobbin for accommodating a lens and protruded at a bottom end with a boss, and a coil block arranged at a periphery of the bobbin; a stator including a magnet facing the coil block and a yoke fixing the magnet; and an elastic member including a first elastic member formed with a through hole coupled to the boss of the bobbin and a second elastic member coupled to an upper end facing the bottom end of the bobbin; wherein the boss is formed with a disengagement prevention unit inhibiting the first elastic member from being disengaged from the boss, and the first elastic member is formed with a coupling unit contacting a joint where the disengagement prevention unit and the coupling unit meet.

Abstract: An optical element driving mechanism is provided and includes a fixed assembly, a movable assembly and a connecting assembly. The movable assembly is configured to connect an optical element having an optical axis, and the movable assembly is movable relative to the fixed assembly. The movable assembly is movably connected to the fixed assembly through the connecting assembly.

Abstract: SMA actuators and related methods are described. One embodiment of an actuator includes a base; a plurality of buckle arms; and at least a first shape memory alloy wire coupled with a pair of buckle arms of the plurality of buckle arms. Another embodiment of an actuator includes a base and at least one bimorph actuator including a shape memory alloy material. The bimorph actuator attached to the base.

Abstract: A camera module may comprise: a printed circuit board on which an image sensor is mounted; a holder member disposed above the printed circuit board and having a plurality of magnets installed thereon; a bobbin installed on the inside of the holder member to be capable of moving along an optical axis, and having a coil unit installed on the outer peripheral surface thereof to be capable of electrically interacting with the magnets; a plurality of receptacles formed in the peripheral surface of the bobbin to form spaces that are separated from the coil unit; and a cover member having a plurality of integrally formed inner yokes, which are formed at positions corresponding to the plurality of receptacles and have the surface on one side thereof separated a certain distance from the coil unit and the surface on the other side thereof separated a certain distance from the bobbin.

Abstract: A lens driving device is provided, including a frame, a lens holder, a spring sheet, and at least one damping element. The lens holder is movably disposed in the frame. The spring sheet has an outer periphery portion combined with the frame, an inner periphery portion combined with the lens holder, and an arm portion connected between the outer periphery portion and the inner periphery portion. The damping element is connected between the arm portion of the spring sheet and at least one of the frame and the lens holder.

Abstract: An optical driving mechanism is provided, for driving an optical element, including: a fixed portion, a movable portion, a driving assembly and a position sensing assembly. The movable portion is movably connected to the fixed portion and includes a holder for sustaining the optical element. The driving assembly is configured to drive the movable portion to move relative to the fixed portion. The position sensing assembly is configured to sense a distance of the movable portion relative to the fixed portion, the position sensing assembly includes a sensing magnetic element and a sensor, wherein the sensing magnetic element is disposed on the movable portion and has a rectangular structure. A direction of a long axis of the rectangular structure extends in a direction that is perpendicular to the optical axis of the optical element, and the direction of the long axis is different from the optical axis direction.

Abstract: A motor for driving lenses is provided. The motor includes a case, a yoke fixed in the case, a magnet fixed in the yoke, a carrier equipped with lenses and installed in the magnet such that the carrier moves up and down within the magnet, a coil coupled with the carrier, in which the coil cooperates with the magnet to move up and down the carrier, a spring unit including first and second springs having arc shapes and being separated from each other while forming a ring shape as a whole, a spacer supporting the outer peripheral surface of the spring unit, and a terminal provided on the spacer.

Abstract: An endoscope apparatus has an endoscope and a video processor. The endoscope has a magnet and a coil, the magnet has a voice coil motor configured to be movable with respect to the coil and a Hall device disposed in the vicinity of the coil and configured to detect a magnetic field of the magnet in order to detect a position of the magnet. The video processor includes a position detection circuit configured to detect the position of the magnet from an outputted signal of the Hall device, an arithmetic operation section configured to correct a sensor output signal indicating the position of the magnet detected by the position detection circuit using correction information and output the sensor output signal, and a drive control circuit configured to control a current or a voltage to the coil based on an arithmetic operation result of the arithmetic operation section.

Abstract: A camera actuator comprises: a fixed-side member; a movable-side member disposed separated from the fixed-side member in a direction orthogonal to a light axis, the movable-side member holding a lens unit; a first lens drive actuator that displaces the movable-side member in at least a prescribed direction; an elastic support member that extends in the direction orthogonal to the light axis, and supports the movable-side member in relation to the fixed-side member so as to allow the displacement in at least the prescribed direction; and a gel-like first damping member provided to the elastic support member.

Abstract: An embodiment relates to a dual lens driving apparatus including: a housing; a first bobbin disposed inside the housing; a second bobbin disposed inside the housing and positioned away from the first bobbin; a first coil disposed on the first bobbin; a second coil disposed on the second coil; a magnet disposed in the housing and positioned opposite from the first coil and second coil; a base disposed below the housing; a board disposed between the housing and the base and opposite from the magnet and including a circuit member having a third coil; and a supporting member movably supporting the housing with respect to the board. The third coil includes a first axial coil which is disposed in a first direction and a second axial coil which is disposed in a second direction different from the first direction. The first axial coil includes four first axial coil units which are positioned away from one another. The four first axial coil units are connected to one another.

Abstract: Provided is an image shooting device and an electronic apparatus, which enable suppression of shaking of a camera unit. The image shooting device (12) includes: a camera unit (26); and a holder (28) configured to movably support the camera unit (26), wherein the holder (28) includes a power transmission-side coil (36), and the camera unit (26) includes a power reception-side coil (38), and wherein the power transmission-side coil (36) and the power reception-side coil (38) are opposed to each other across a space therebetween.

Abstract: Embodiments provide a lens moving apparatus including housing to support a driving magnet, a bobbin provided at an outer circumferential surface thereof with a coil located inside the driving magnet, the bobbin being moved in a first direction parallel to an optical axis within the housing via electromagnetic interaction between the driving magnet and the coil, a lower elastic member to connect a lower portion of the housing and a lower portion of the bobbin to each other, both ends of the coil being electrically connected to the lower elastic member, the lower elastic member having a first terminal electrically connected to an external power source so as to supply external power to the ends of the coil, and a printed circuit board provided at one side surface of the housing, the printed circuit board having a second terminal electrically connected to the external power source.

Abstract: An embodiment comprises a housing, a bobbin disposed in the housing, a first coil disposed on the bobbin, a magnet disposed in the housing, an upper spring coupled to an upper part of the bobbin and an upper part of the housing, a circuit substrate disposed under the housing, a support member electrically connecting the upper spring and the circuit substrate, and a damper disposed on the upper spring, wherein the upper spring comprises an outer side portion coupled to the housing, a first coupling portion coupled to the support member, and a first connecting portion which connects the outer side portion and the first coupling portion, the first coupling portion further comprises a first extension extending from the first coupling portion toward the outer side portion, the first extension is spaced apart from the outer side portion, and the damper connects the first extension and the outer side portion.

Abstract: Systems are provided for the efficient generation of oscillating magnetic fields below the Low Frequency band. These systems generate such fields by mechanically rotating one or more diametrically-magnetized permanent magnets. In order to reduce friction, the magnets are rotated by applying a motive magnetic field to the magnet(s) to rotate the magnet(s) and thereby generate the oscillating magnetic field. Additionally, diamagnetic repulsion, active magnetic field control, and/or biasing permanent magnets are employed to levitate the rotating magnet(s), further reducing friction and increasing system efficiency. These systems may be employed to generate modulated low-frequency oscillating magnetic fields for communication through seawater, rocks, or other obstacles. Additionally or alternatively, these systems may be employed to generate low-frequency oscillating magnetic fields for navigation and location sensing, resource identification and extraction, or other applications.

Abstract: A system includes a support frame residing within a region conforming to a 3.5-inch form-factor disk drive specification, and a plurality of data storage drives, wherein each data storage drive resides entirely within the region. Each data storage drive conforms to a 2.5-inch form-factor disk drive specification, is mounted on the support frame via at least one external mounting hole that is positioned on a surface of the data storage drive in conformance with the 2.5-inch form-factor disk drive specification, is communicatively coupled to a backplane via an electrical connection device, and the electrical connection device includes a flexible electrical connector that, when coupled to a first end of the data storage drive, does not extend beyond the region, and has a removal tab through which a removal force is exerted to urge the data storage drive away from the support frame.

Abstract: Provided is an electromagnetic actuator for which the wiring structure thereof can be simplified, for which the thickness thereof can be reduced, and with which a desired drive force can be attained. An electromagnetic actuator is provided with: a base member; a drive frame that is supported so as to be movable in relation to the base member; a coil that is fixed to the base member; and a magnet that is fixed to the drive frame. The coil is formed as an injection-molded circuit part, and the base member has formed thereon a circuit that connects to the coil.

Abstract: Provided is a camera module, including: a lens group including a lens barrel and a camera lens; and a driver assembly configured to drive the camera lens to move and including a magnetic portion. The camera lens includes a magnetic matching portion. The magnetic portion and the magnetic matching portion are respectively located at two ends of a side wall of the lens barrel in a thickness direction, and are connectable to each other through magnetic attraction, in such a manner that the camera lens is driven by the driver assembly to move along the optical axis of the camera lens. In this way, the side wall of the lens barrel is free of a through hole, so that light is prevented from entering the lens barrel via the through hole, thereby prolonging the lifetime of the camera module and improving the image-capturing effect.

Abstract: A lens driving device is describes that includes a stator and a mover, with a lens support for supporting the lens and for moving in an optical axis direction of the lens with respect to the stator. Any one of the stator and the mover has protruding portions and any other one of the stator and the mover has recessed portions into which the protruding portions are inserted. The protruding portions and the recessed portions each have opposing surfaces where the protruding portions and the recessed portions are opposed to each other, and a resin with viscoelasticity is provided to contact the opposing surfaces of the protruding portions and the opposing surfaces of the recessed portions.

Abstract: A lens moving apparatus is disclosed.

Abstract: Embodiments provide a lens moving apparatus including a first magnet, a housing, a bobbin, around which a coil is wound and which moves in a first direction in the housing, an upper elastic member disposed on upper surfaces of the bobbin and the housing, a lower elastic member disposed under lower surfaces of the bobbin and the housing, and a damping member disposed between the upper or lower elastic member and the bobbin.

Abstract: A first rail 41 supports a first rolling body 45 so as to allow the first rolling body 45 to be rollable in a first direction parallel to an optical axis of a first focus lens. A second rail 42 supports a second rolling body 46 so as to allow the second rolling body 46 to be rollable in the first direction. The biasing mechanism 47 supports the first rolling body 45 so as to allow the first rolling body 45 to be movable in the first direction, and biases the first rolling body 45 toward the first rail 41. A third rail 43 is provided in parallel with the second rail 42. The third rail 43 supports a second rolling body 46 so as to allow the second rolling body 46 to be movable in the first direction.

Abstract: An optical mechanism is provided, including a housing, a holder, a lens received in the holder, a driving assembly, and a base connected to the housing. The holder is movably disposed in the housing, and the lens has a first surface exposed to a first side of the holder and facing a first inner sidewall surface of the housing. The driving assembly is disposed in the housing for driving the holder and the lens to move relative to the housing.

Abstract: A lens module comprises a frame, a lens unit, and a driving module for driving the lens unit to move relative to the frame. The lens unit comprises a body made of plastic, at least one lens located in a center of the body, and an embedded member made of metal. The metal embedded member is embedded within a thinner rim portion of the lens unit by means of a plastic insert-molding process in such a manner that, at least one protrusion of the metal embedded member is exposed outside of the rim portion. When the lens unit moves relative to the frame, a location where the lens unit might touch the frame is one of the at least one protrusion, and therefore the structural strength, endure ability of impact and endure ability of friction at the rim portion of the lens unit are increased. In addition, the protrusion can also act as a positioning post or winding post for a coil of the driving module.

Abstract: An electromechanical actuator includes a base part and an oscillation resonator having the shape of a rod. The electromechanical actuator further includes amount for mounting the oscillation resonator to the base part. The mount is configured to bear the oscillation resonator so as to be rotatable around an axis of the oscillation resonator rod relative to the base part. A driver member is mechanically coupled to the oscillation resonator. A slider or a rotator is configured to be moved by the driver member when the oscillation resonator is excited.

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: An optical unit with a shake correction function may include a movable body having an optical element, a turnable support mechanism structured to turnably support the movable body around an optical axis of the optical element, a fixed body supporting the movable body through the turnable support mechanism, a magnetic rolling drive mechanism structured to turn the movable body, and an angular position return mechanism structured to return the movable body to a reference angular position around the optical axis. The magnetic rolling drive mechanism may include a coil and a magnet facing the coil. The magnet is polarized and magnetized in a circumferential direction. The angular position return mechanism includes a magnetic member attached to the movable body and, when the movable body is located at the reference angular position, an imaginary plane which includes a magnetizing polarized line of the magnet passes a center of the magnetic member.

Abstract: The present invention relates to a camera module, the module including: a PCB; an image sensor mounted on the PCB and formed with an image pickup device; a base mounted on the PCB and including a plated portion formed at a lower center with an opening mounted with an IR filter; a lower spring plate formed with a conductive material; a spacer arranged on an upper surface of the lower spring plate and forming a staircase structure by a rib wrapping a periphery of the lower spring plate to supportively apply a pressure to the lower spring plate; a lens actuator including a bobbin, and a yoke; an upper spring plate coupled to an upper surface of the lens actuator; and a cover attached to an upper surface of the upper spring plate.

Abstract: Disclosed is a motor for driving lenses.

Abstract: In a vibration motor, a substrate is disposed on a base plate, a coil is disposed on the substrate, and a magnet is disposed so as to be accommodated in an inner peripheral side of the coil having an annular shape by vibration. A back yoke is disposed on the magnet, a weight is disposed on the back yoke, and a case accommodates the coil, the magnet, the back yoke, and the weight. An elastic member is disposed between the case and the weight. The base plate, the case, the magnet, the back yoke, and the weight are each formed to have a rectangular shape including long sides that extend in a first direction orthogonal to a vertical direction and short sides that extend in a second direction orthogonal to the vertical direction and the first direction in a top view.

Abstract: A magnetic interference-resistant translation-type optical image stabilization voice coil motor includes a base, a spring plate, a lens carrier, at least three groups of magnets, and a housing. The base, the housing, and the groups of magnets are connected together to form a fixed structure. The groups of magnets are disposed inside the housing. Each group of magnets includes a first magnet and a second magnet stacked on the first magnet. The first magnet and the second magnet have opposite magnetic field directions. The lens carrier includes a body and coils disposed on the body. The number of the coils is the same as the number of the groups of magnets. Each of the coils is disposed opposite to one of the groups of magnets. The spring plate is connected to the lens carrier and one of the first magnet and the second magnet.

Abstract: A camera module includes an optics assembly, an actuator module, and detection circuitry for preventing the optics assembly from colliding with a mechanical stop due to physical impacts and disturbances. The actuator module includes a magnet and a coil. The detection circuitry detects an induced current caused by movement of the coil with respect to the magnet. The direction of the detected induced current indicates movement of the optics assembly in a particular direction along an optical axis. The detection circuitry provides a current to the coil to cause the optics assembly to move toward a particular position or direction. In some cases, the provided current may cause the optics assembly to move in a direction opposite of the movement that caused the induced current.

Abstract: A twin-lens module includes a first lens-maintaining component and a second lens-maintaining component. The first lens-maintaining component includes at least one first magnet which is arranged on two sides of the first lens. The second lens-maintaining component includes at least one second magnet which is arranged surrounding the second lens. A portion of the first magnet and/or the second magnet are multipolar magnets.

Abstract: A lens drive device has a support section for supporting a shake correction movable section relative to a shake correction stationary section. The support section has: an upper frame body; a plate-shaped first side support body for connecting the upper frame body and the shake correction stationary section; and a plate-shaped second side support body for connecting the upper frame body and the shake correction movable section. The first side support body and the second side support body are formed from an elastomeric material. As the shake correction movable section moves in a first direction, the first side support body is bent in the opposite directions at two Y-hinge sections extending in a second direction. As the shake correction movable section moves in the second direction, the second side support body is bent in the opposite directions at two X-hinge sections extending in the first direction.

Abstract: Some embodiments of a camera unit of a multifunction device include an actuator for moving the optical package relative to the image sensor. In some embodiments, the actuator includes one or more lateral magnets situated at one or more sides of the optical package. In some embodiments, the actuator includes one or more optical image stabilization coils for circulating electric current in a plane perpendicular to the an optical axis of the optical package to generate magnetic interactions with a respective one of the one or more lateral magnets. In some embodiments, each of the optical image stabilization coils has an interior surface boundary, and a space enclosed by the interior surface boundary has a width smaller at a center of a length of the optical image stabilization coil than at the ends of the optical image stabilization coil.

Abstract: A lens driving device includes an auto-focusing driving part that includes an auto-focusing coil and driving magnets, and an optical image stabilization driving part that includes an optical image stabilization coil disposed so as to be spaced apart from the driving magnets in an optical-axis direction and the driving magnets. An autofocus fixing part includes a magnet holder to which the driving magnets are fixed by adhesion, and adhesion surfaces of the magnet holder to which the driving magnets adhere are parallel to the optical-axis direction, and first end portions of the adhesion surfaces facing an optical image stabilization fixing part in the optical-axis direction are opened. Each adhesion surface includes a recessed portion that extends in the optical-axis direction toward a second end portion, which is opposite to the first end portion, from a portion positioned closer to an inside than the first end portion.

Abstract: A lens driving device is provided, the lens driving device including: a housing; a bobbin disposed at an inner side of the housing; a first driving part disposed on the bobbin; a second driving part disposed on the housing and facing the first driving part; a first mounting part disposed on the bobbin; a second mounting part disposed on the bobbin and disposed at an opposite side of the first mounting part based on a center of the bobbin; a first magnet disposed on the first mounting part; a sensor part sensing a position of the first magnet; and a second magnet disposed on the second mounting part.

Abstract: This is to provide a laser irradiation apparatus which can drive a deflection optical system (33) with a high speed by a small and lightweight structure and can cope with heat generation of the optical system. The laser irradiation apparatus includes a condensing optical system (32) for condensing a laser beam (B) generated by a laser oscillator (10) at a predetermined focal point (FP), a deflection optical system (33) for deflecting the laser beam (B) generated from the condensing optical system (32) with a predetermined deflection angle, and a driving unit (100) for rotationally driving the deflection optical system (33) around a rotation axis provided substantially in parallel to an optical axis of the condensing optical system (32), wherein the driving unit (100) has an air motor (100) which convert an energy possessed by a gas supplied from a gas supplying source (60) to a rotational force.

Abstract: Provided is a scanning type image measuring apparatus capable of reducing an imaging time while suppressing an increase in power consumption. The scanning type image measuring apparatus includes an objective lens scanning mechanism for operating an objective lens in a first direction and a second direction perpendicular to the first direction, wherein, with respect to a resonance frequency related to a spring constant of a support member supporting a movable unit including the objective lens and a mass of the movable unit, the resonance frequency in the second direction is set to be higher than the resonance frequency in the first direction, and a scanning frequency of the objective lens in the second direction is set to be higher than the resonance frequency in the second direction.

Abstract: The present invention aims to provide a lens driving device capable of realizing the reduction of power consumption by improving the driving efficiency of an electromagnetic drive mechanism. The lens driving device includes: one or mores drive coils having one or more forward path sides and one or more return path sides, and drive magnets each having a forward path side magnet plate and a return path side magnet plate. The magnetization directions of the forward path side magnet plate and the return path side magnet plate of each drive magnets define an angle which is expanded towards the oppositely arranged one or more drive coils. The magnetic induction intensity applied to the drive coils from the drive magnets can be increased and improved, and thus powerful lorentz force can be effectively generated by the drive coils after being electrified.

Abstract: An optical medium reproduction apparatus for optically reproducing an optical medium, including: a detection unit for splitting a cross section of a beam returned from the optical medium into a plurality of regions and for forming respective detection signals; a multiple input adaptive equalizer having a plurality of adaptive equalizer units, wherein the respective detection signals are inputted into the adaptive equalizer units, and the outputs of the adaptive equalizer units are computed to form equalization signals; a binarization unit for binarizing the equalization signals to provide binary data; and an equalization error computing unit for determining an equalization error from equalization target signals provided based on the binary data from the binarization unit and the equalization signals, and providing the adaptive equalizer units with the equalization error as control signals for adaptive equalization.

Abstract: Embodiments provide a lens driving unit including a base, a housing supported so as to be movable relative to the base, a magnet located on the housing, a pattern coil part including a pattern coil that is located opposite the magnet, the pattern coil part being located on the base, and a sensor part mounted to the pattern coil part for sensing a position or movement of the housing, and the pattern coil part includes a first layer and a second layer stacked on the first layer, the sensor part being mounted underneath the first layer, and the pattern coil being formed on the second layer. Thereby, manufacturing costs may be reduced owing to a reduction in the number of elements, processes, and process management points.

Abstract: A vibration motor includes a fixed member, a vibration unit, and an elastic member. The vibration unit includes a first weight, a second weight, and a magnet sandwiched by the first and second weights. The motor further includes a first positioning guiding member including a first weight guiding rail, a first base guiding rail, a first movement rail formed by the first weight guiding rail and the first base guiding rail, and a plurality of magnetic bodies disposed at one side of the first movement rail; a second positioning guiding member including a second weight guiding rail, a second base guiding rail, a pair of second movement rails formed by the second weight guiding rail and the second base guiding rail, and a magnetic body disposed between the second movement rails.

Abstract: Disclosed is a lens driving apparatus. The lens driving apparatus includes a base formed at a center thereof with a first opening; a housing coupled with the base and having a second opening corresponding to the first opening; a yoke installed on the base and including a horizontal plate having a third opening corresponding to the first opening and a vertical plate protruding upward from the horizontal plate; a bobbin movably installed in the yoke and coupled with a lens module; a coil fixedly disposed around the bobbin; a plurality of magnets provided at the vertical plate of the yoke to face the coil; and a spring installed on at least one of upper and lower portions of the yoke to return the bobbin, which has moved up due to interaction between the magnet and the coil, to its initial position.

Abstract: The present invention relates to a camera module, the module including: a PCB; an image sensor mounted on the PCB and formed with an image pickup device; a base mounted on the PCB and including a plated portion formed at a lower center with an opening mounted with an IR filter; a lower spring plate formed with a conductive material; a spacer arranged on an upper surface of the lower spring plate and forming a staircase structure by a rib wrapping a periphery of the lower spring plate to supportively apply a pressure to the lower spring plate; a lens actuator including a bobbin, and a yoke; an upper spring plate coupled to an upper surface of the lens actuator; and a cover attached to an upper surface of the upper spring plate.

Abstract: An image stabilization apparatus includes a moving member configured to be movable within a plane orthogonal to an optical axis of an image pickup optical system, a stationary member configured to movably support the moving member within the plane orthogonal to the optical axis of the image pickup optical system, and a plurality of drive units configured to drive the moving member so as to move within the plane orthogonal to the optical axis of the image pickup optical system with respect to the stationary member, in which a first drive unit of the plurality of drive units is arranged on a first surface side of the moving member and a second drive unit of the plurality of drive units is arranged on a second surface side of the moving member.

Abstract: Disclosed is a lens driving apparatus. The lens driving apparatus includes a base, a yoke coupled to the base, having an upper surface formed with a hole, a closed side surface, and an opened bottom surface, a bobbin movably installed in an inner portion of the yoke, a lens module coupled to the bobbin to go in and out the hole according to movement of the bobbin, a magnet fixed to an inner portion of the yoke, a coil fixed to an outer portion of the bobbin while facing the magnets, and springs coupled to the bobbin to provide restoration force to the bobbin.

Abstract: A lens driving device includes: a lens holder; a first coil wound onto the lens holder around the optical axis direction; a plurality of magnets having a first surface and a second surface perpendicular to the first surface, the magnets being disposed in a state in which the first surface opposes a circumferential surface of the first coil; a magnet holder that fixes the magnets apart from each other; a yoke constituting, together with the magnets, a magnetic circuit having a magnetic flux that traverses the first coil; a second coil provided opposite the second surface of the magnets; and a base on which the second coil is disposed. An auto-focus lens driving part that includes the lens holder, the first coil, the magnets, the magnet holder, and the yoke is held on the base so as to allow relative displacement in a direction perpendicular to the optical axis.

Abstract: A lens driving apparatus includes a holder, a cover, a carrier, a first magnet, a coil, a spring, two second magnets and a hall sensor. The holder includes an opening hole. The cover is made of metal material and coupled to the holder. The carrier is movably disposed in the cover, and for coupling to a lens. The first magnet is connected to an inner side of the cover. The coil is wound around an outer side of the carrier, and adjacent to the first magnet. The spring is coupled to the carrier. The second magnets are disposed on one end of the carrier which is toward the holder. The hall sensor is for detecting a magnetic field of any one of the second magnets, wherein the magnetic field is varied according to a relative displacement between the hall sensor and the second magnet which is detected.

Abstract: A VCM is disclosed, the motor including a stator including a first driving unit, a rotor arranged inside the stator, including a second driving unit responding to the first driving unit and mounted therein with a lens, a base fixing the stator, and an elastic member coupled to the rotor to float the rotor from the base in a case a driving signal for driving the first and second driving units is not applied to the first and second driving units.