Abstract: A tilt preventing structure for electromagnetic driving device comprises: a casing, a driven object (such as lens module), a guiding mechanism and an electromagnetic driving module. The driven object is received within the casing and is movable along an axial direction. The guiding mechanism is furnished inside the casing and is sleeved with the driven object, so as to guide the driven object to move along the axial direction. The electromagnetic driving module comprises a plurality of magnetic elements mounted on the driven object. The guiding mechanism is made of magnetically susceptible material and is nearby one of the magnetic elements. By means of the magnetic pulling force generated by the nearby magnetic elements, the guiding mechanism is pulled by the force and leans against the driven object, so as to minimize the tilts when the driven object is moving relative to the guiding mechanism.

Abstract: The motor driving apparatus includes a motor driving a driven member, and a controller performing, from a start of driving of the motor, acceleration drive of the motor on the basis of a predetermined acceleration pattern with open-loop control, and then perform, in response to increase of a driving speed of the motor or the driven member to a predetermined speed, drive of the motor with feedback control. The controller changes the predetermined acceleration pattern and the predetermined speed depending on a magnitude of a load acting on the motor or the driven member.

Abstract: An optical assembly supported in an arrangement, especially in an objective or in an illuminating or exposure system, in the interior of a housing comprising at least one optical element, especially a lens, a mirror, or an aperture, wherein the at least one element is influenceable by at least one manipulator is characterized in that the at least one manipulator is arranged either outside of the housing or in a holding means that is separated entirely or to a large extent by the help of a decoupling means, and that there is provided an effective coupling between the manipulator and the element to be influenced by the manipulator in the interior of the arrangement.

Abstract: A voice coil motor includes a stationary magnetic field generator with a receiving space, a moveable magnetic field generator received in the receiving space, a lens module, a base, and a lower elastic plate. The moveable magnetic field generator includes a lens retainer. The lens retainer defines a circular hole with internal threads. The lens module forms external threads threadedly engaging with the internal threads. An adhesive is coated between the external and internal threads. The stationary magnetic field generator is supported on the base. The base defines an opening in its center. The lower elastic plate is sandwiched between the base and the stationary magnetic field generator and defines a light passing hole. The lower elastic plate includes an elastic portion surrounding the light passing hole. A cross-sectional area of the elastic portion is less than a cross-sectional area of the opening.

Abstract: A yoke of an actuator for driving a shift moving frame in a pitch direction is shaped such that when the shift moving frame is moved in the pitch direction, a magnetic attractive force for reducing a moment acting on the shift moving frame due to a magnetic attractive force generated between the magnet and the yoke of an actuator for driving the shift moving frame in a yaw direction is generated between the yoke and the magnet of the actuator for driving in the pitch direction.

Abstract: The subject matter disclosed herein relates to an imaging device having a small form factor.

Abstract: A control apparatus is configured to control an actuator, which moves one driven member by a plurality of vibrators, by supplying two alternating-current signals to each vibrator of the actuator. The control apparatus includes a controller configured to acquire a speed characteristic of the driven member corresponding to the frequency of the alternating-current signal with respect to the vibrator(s) based on the acquired speed and the frequency of the alternating-current signal supplied to the vibrator(s) at the time of the acquisition of the speed, and reduce a difference in the characteristic among the plurality of vibrators by adjusting at least one of an amplitude of an alternating-current signal to be supplied to the vibrator, a frequency of an alternating-current signal to be supplied to the vibrator, and a phase difference between two alternating-current signals to be supplied to the vibrator, based on the acquired characteristic.

Abstract: A voice coil motor (VCM) includes a lens carrier physically connected to a magnetic device, an electromagnetic driving apparatus, constructed by a coil, a magnetic sensing element, a storage media and a controller. The magnetic sensing element detects a location of the lens carrier and outputs the location value relating to the location of the lens carrier via an amplifier. The storage media stores a gain value and an offset compensation value relating to the amplifier. The controller can make the lens carrier move between a top position and a bottom position in which the lens carrier can be moved within the voice coil motor. The lens carrier is moved using the coil interaction with a magnetic field of the magnetic device when current is applied to the coil.

Abstract: A miniature MEMS autofocus camera module includes an image sensor and an optical assembly including a movable lens group that comprises one or more lenses and that is coupled to a MEMS actuator such that the movable lens group is movable relative to the image sensor. The optical assembly further includes at least a first fixed lens group that comprises one or more lenses and that is fixed relative to the image sensor. A processor is programmed to control an autofocus method designed to adjust a focus distance to an object disposed an arbitrary distance from the miniature MEMS autofocus camera module by actuating the MEMS actuator that is coupled with the movable lens group.

Abstract: An electromagnetic driving device defined with an X axis, a Y axis and a Z axis includes a casing, a base, a driven object, an anti-tilt mechanism and an electromagnetic driving module. The electromagnetic driving module includes at least one magnetic member and at least one coil. The base connects to the casing so as to form an inner compartment thereinside. The driven object is received and movable along the Z axis inside the inner compartment. The magnetic member fixed to the driven object can be driven by magnetic forcing generated by the respective coil fixed to the casing. With the anti-tilt mechanism to provide lateral pressing forcing to eliminate possible gap between components connecting the driven object and the casing while the driven object is moved along the Z axis inside the inner compartment, possible dynamic tilt of the moving driven object can then be diminished.

Abstract: A miniature MEMS autofocus camera module includes a housing, an image sensor coupled to the housing, and an autofocus optical module coupled within the housing and including a MEMS actuator that is configured to move one or more movable lenses relative to one or more fixed lenses along an optical axis of the camera module to adjust a focusing distance of the autofocus optical module to automatically focus an object disposed an arbitrary distance from the camera module onto the image sensor. The autofocus optical module includes one or more pairs of adjacent lens surfaces that include abutting registration features to aid in alignment.

Abstract: A voice coil motor (VCM) includes a case, a lens holder, a spring sheet, a coil, a magnet assembly, and a guiding ring. The case includes an inner surface. The lens holder is received in the case. The spring sheet is connected between the case and the lens holder. The coil circles around the lens holder. The magnet assembly is positioned on the inner surface of the case. The guiding ring defines a guiding hole and is positioned on the inner surface of the case, and one end of the lens holder is received in the guiding hole.

Abstract: A voice coil motor includes a base made of plastic or resin, a stator, a moving and a shell. The base includes a mounting surface, assembling surfaces, and protrusions extending from at least one of the assembling surfaces. The stator includes a rack and magnets. The rack is mounted to the mounting surface. The moving unit received in the rack. The shell includes a top plate and side plates extending from the top plate. The shell defines at least one slot. Each slot is positioned at a joint between two neighboring side plates. At least one side plate defines mounting holes. The base, the moving unit, and the stator are accommodated in the shell. Each protrusion passes through a mounting hole and is heated to form a head portion. The head portion is positioned outside the shell and has an outer diameter greater than a diameter of each mounting hole.

Abstract: There are provided a position detection device that makes it possible to enhance the precision of detection, an image pickup apparatus equipped with the position detection device, and a magnet provided in the position detection device. The position detection device includes: a magnet and a magnetic detection device arranged opposite to each other to be relatively movable in a straight-line direction. The magnet has a first surface facing the magnetic detection device, and has periodic projections and recesses arrayed on the first surface in a relative movement direction.

Abstract: A method for manufacturing camera modules for use in portable electronic devices, such as mobile phones, is provided. More specifically, in camera modules utilizing lens motion type auto focus actuation, permanent magnets associated with voice coil motors utilized in the auto focus system, generate magnetic flux that can interfere with the process of bonding image sensors to camera modules if the permanent magnets of different voice coil motors are positioned too closely. Incorporating a magnetic shield into the manufacturing process to restrain or control the magnetic flux generated by the permanent magnets permits voice coil motors camera modules to be positioned closer together during the manufacturing process. This increases manufacturing throughput and reduces cost.

Abstract: A lens actuating module for realizing focus adjustment and optical zooming. The lens actuating module includes a rod which is disposed on one side of a lens barrel on which at least one lens is mounted, and has an axis direction corresponding to an optical axis direction of the lens barrel, a driving force transmission member which has a conjoining recess to be conjoined with an outside surface of the rod and has magnetism so as to be conjoined with the outside surface of the rod due to a magnetic force, and a piezoelectric actuator which is disposed on one side of the driving force transmission member in the optical axis direction to provide an axis direction driving force to the rod via the driving force transmission member.

Abstract: A magnetic levitation motor includes a fastening unit and a moving unit. The fastening unit includes a fixing frame and a first magnet assembly. The fixing frame includes a lower plate and four guiding poles extending upward from corners of the lower plate. The first magnet assembly includes four first magnets supported on the lower plate. Each first magnet is positioned between two adjacent guiding poles. The moving unit includes a moving frame and a second magnet assembly. The moving frame includes an outer surface and defines a receiving recess on the outer surface. The second magnet assembly includes four second magnets received in the receiving recess. The first magnets are positioned above the second magnets along an optical axis of the magnetic levitation motor.

Abstract: A linear actuator assembly is provided, the assembly including a linear actuator, an elongated guide spaced in parallel alignment with the linear actuator and a movable carriage disposed therebetween. The carriage includes a first notch to receive a rod of the linear actuator and a second notch to receive the guide. The carriage remains in direct and continuous contact with the linear actuator and the guide at the first notch and second notch, respectively, when the carriage moves linearly back and forth along a travel axis.

Abstract: A leaf spring supports a pillar shaped movable portion disposed in a center portion with respect to a cylindrical fixed portion disposed around the movable portion in the direction of a center axis shiftably so as to position the movable portion in a radial direction. The leaf spring is made of stainless steel having relative magnetic permeability which is not less than 1.1.

Abstract: A drive unit capable of reducing size while maintaining drive characteristics, a method of manufacturing the same, a lens module, and an image pickup unit are provided. A drive unit includes: a fixing member; an actuator device having a first end portion directly or indirectly fixed by the fixing member; and a reinforcing member (reinforcing layer) provided on part or all of the actuator device. Mechanical strength of the actuator device is secured even when the width of the actuator device (for example, the width W12) is narrowed, by providing the above-described reinforcing member.

Abstract: Provided is a focusing apparatus for an optical device, the focusing apparatus including a lead screw rotatably installed in the optical device, a carriage screw-coupled to the lead screw to move in a longitudinal direction of the lead screw in response to rotation of the lead screw, a lens barrel receiving at least one lenses and moving along the longitudinal direction of the lead screw, and a bridge extending from an outer circumferential surface of the lens barrel to enclose the carriage, in which the bridge moves the lens barrel in response to movement of the carriage.

Abstract: The present invention relates to a driving body and a driving device having a piezoelectric element mounted thereon, and more particularly, to a driving body and a driving device having a piezoelectric element mounted thereon for transferring a lens by actuating a lens holder in a vertical direction using the piezoelectric element.

Abstract: A lens driving device, an autofocus camera and a camera-equipped mobile terminal are provided that can correct movement of a lens in an optical axis direction and tilt of an optical axis, and reduce the dimension thereof in the optical axis direction. The device includes: a lens support 5 for supporting a lens at an inner circumference; a plurality of coils 19a to 19d disposed at regular intervals in a circumferential direction on an outer periphery of the lens support 5; a base 8 that supports the lens support 5 so as to move freely in an optical axis direction of the lens; and a magnet portion 17 provided on the base 8 and facing each of the coils 19a to 19d, in which an electric current of equal current value is applied to each of the coils 19a to 19d when moving the lens support 5 in the optical axis direction, and current values of the electric current applied to predetermined coils 19a to 19d are varied when correcting tilt of the optical axis of the lens.

Abstract: Provided are a lens driving motor and an elastic member of the lens driving motor. The elastic member of a lens driving motor, the elastic member includes a first spring and a second spring. The second spring is different from the first spring and disposed together with the first spring on one side of a carrier to support the carrier. A first lead line of a coil and a first external power source are connected to the first spring, and a second lead line of the coil and a second external power source are connected to the second spring to supply power to the coil. Since the carrier can be assembled to other part after a (+) lead line and a (?) lead line of the coil are connected to the first and second springs, respectively, using solder, a process is simple and convenient.

Abstract: A piezoelectric actuator having reduced sizes, a lens barrel and an optical device. A piezoelectric actuator is provided with: a first actuator including first piezoelectric elements to be displaced in a first direction; a second actuator, which includes second piezoelectric elements to be displaced in a second direction intersecting with the first direction, and is arranged in a direction intersecting with the first direction with respect to the first actuator; and a relative displacement member, which is arranged between the first actuator and the second actuator and can be relatively displaced in the first direction with respect to the first actuator.

Abstract: Embodiments include optic mounts that may be adjustably positioned with a piezoelectric inertia driver. Position data feedback may be provided to embodiments of a piezoelectric inertia driver controller from an encoder, such as an optical encoder.

Abstract: A voice coil motor (VCM) is disclosed, the VCM including: a stator including a magnet generating a first electromagnetic field; a mover including a bobbin formed with a hollow hole through which light passes and a coil formed on a periphery of the bobbin that generates a second electromagnetic field responsive to the first electromagnetic field; a base fixed at the stator and formed with an opening through which the light passes; and at least one elastic member elastically supporting the bobbin and forming a gap between the bobbin and the base when the coil is not applied with a current.

Abstract: A voice coil motor includes a stationary magnetic field generator having a supporting frame, a moveable magnetic field generator, a case and a double sided adhesive layer. The supporting frame defines a first receiving space receiving the moveable magnetic field generator. The moveable magnetic field generator defines a second receiving space. The case encloses the stationary magnetic field generator, the moveable magnetic field generator and the double sided adhesive layer and includes a bottom plate and side plates. The bottom plate includes a first surface and a second surface facing away the first surface. The side plates extend from the second surface. The bottom plate defines a through hole. A diameter of the through hole is smaller than that of the second receiving space. The double sided adhesive layer is entirely covering the second face.

Abstract: An apparatus for controlling optical-system inclination/rotation center, comprising a housing (200); a bracket (201) installed in the housing (200) for loading lenses; and a first spring system (202) and a second spring system (203) connected onto the housing (200) and the bracket (201), wherein either one of the spring systems is a planar spring system and comprised of at least one leaf spring, the surface of each leaf spring being generally parallel to the plane of the spring system; the planes of the first spring system (202) and the second spring system (203) being generally parallel with each other, and the normal direction of each spring system being generally parallel to the center axis of the bracket (201) or the lens optical axis; the effective elastic coefficient of said first spring system (202) in the lens axis direction is far less than that in the direction perpendicular to the lens axis; the effective elastic coefficient of the second spring system (203) in each direction is far less than that

Abstract: Provided is a lens barrel comprising a lens holding member that holds a lens; a guide bar that has a magnetic pattern in which a pair of magnetic poles repeat in a longitudinal direction and that has the longitudinal direction thereof oriented in a direction of an optical axis of the lens to guide the lens holding section to move in the direction of the optical axis; a control portion that is disposed on an outer circumferential surface of the lens holding member and that includes a magnetic body generating magnetic force between itself and the magnetic pattern of the guide bar; and a drive coil that is arranged in a manner to not contact the guide bar and that generates magnetic drive force between itself and the guide bar.

Abstract: Disclosed herein is a lens actuating module for realizing focus adjustment and optical zooming. The lens actuating module includes a rod which is disposed on one side of a lens barrel on which at least one lens is mounted, and has an axis direction corresponding to an optical axis direction of the lens barrel, a driving force transmission member which has a conjoining recess to be conjoined with an outside surface of the rod and has magnetism so as to be conjoined with the outside surface of the rod due to a magnetic force, and a piezoelectric actuator which is disposed on one side of the driving force transmission member in the optical axis direction to provide an axis direction driving force to the rod via the driving force transmission member.

Abstract: A motor control device includes a counter that counts pulses output from a one-phase encoder according to rotation of a DC motor, and a controller that recognizes rotation number of the DC motor based on the number of pulses counted by the counter. After the DC motor is braked, the controller starts applying a predetermined voltage to the DC motor at first timing before the DC motor stops, and stops applying the predetermined voltage at second timing after the DC motor stops. The controller subtracts the number of pulses generated after the second timing from a value counted by the counter. The predetermined voltage is lower than a lowest voltage necessary for driving a driven object, and is higher than a lowest voltage necessary for rotating the DC motor against an attracting force between a magnet and a coil in the DC motor.

Abstract: A leaf spring supports a pillar shaped movable portion disposed in a center portion with respect to a cylindrical fixed portion disposed around the movable portion in the direction of a center axis shiftably so as to position the movable portion in a radial direction. The leaf spring is made of a material having Vickers hardness which is not less than 500 (HV).

Abstract: A lens driving device includes a ring-shaped driving coil fixed to a lens holder so as to position around a tubular portion thereof and a rectangular hollow cylindrical yoke including a plurality of flat-shaped permanent magnets opposite to the driving coil. Each flat-shaped permanent magnet has both ends in a horizontal direction which extend in the proximity of opposed two sides of the yoke. The driving coil is disposed so as to extend up to the vicinity of the both ends in the horizontal direction of each flat-shaped permanent magnet.

Abstract: A voice coil motor includes a movable barrel and a spring plate. The movable barrel includes a top end and a number of locating members. Each locating member includes a locating post on the top end, and a blocking portion on the locating post. The spring plate includes a top surface, a bottom surface, and an inner frame. The spring plate defines a through hole passing through the top surface and the bottom surface. The inner frame surrounds the through hole. The inner frame defines a number of locating holes. Each locating hole receives a corresponding locating post. The spring plate is positioned between the blocking portions and the top end. The blocking portions lock the inner frame to the movable barrel. The inner surface of each locating hole defines spaced gaps. Each gap passes through the top and the bottom surfaces.

Abstract: In a lens driving device, a rack gear portion is used as a gear portion so that the gear portion can be disengaged from the terminal end of the lead screw in the radial direction. To efficiently utilize a guide shaft formed with high precision, the guide shaft extends through a spring supporting frame of a lens holder that holds a lens, a movable member having the rack gear portion that meshes with the lead screw, whereby the movable member and the lens holder are linearly guided along the guide shaft, and the guide shaft also serves as the rotation axis of the movable member. A compression coil spring is wound around the guide shaft, and the rack gear portion is pressed against the lead screw by using the compression coil spring.

Abstract: There is provided a camera module. The camera module includes: a lens barrel including at least one lens; a housing receiving the lens barrel and having an opening in one surface thereof; an actuator driving the lens barrel through the opening; and a preload control part receiving the actuator therein and forming one surface of the housing by being coupled to the opening such that preload generated from the lens barrel and the actuator is controlled.

Abstract: A lens driving apparatus which lessens shake of the lenses is provided. The lens driving apparatus includes a lens support unit comprising a first support and a second support that face each other, and a slope on an inner surface of the first support, wherein one or more lenses are mounted on the lens support unit; a contact unit disposed between the first and second supports, wherein a protrusion is formed on one surface of the contact unit facing the slope; a force application unit configured to apply a force to the contact unit so that the protrusion contacts the slope; and a driving unit configured to contact another surface of the contact unit and configured to move the lens support unit in an optical axis direction.

Abstract: A lens drive device comprises a lens holder, a piezoelectric actuator, a ball member held rotatably, and an biasing member configured to apply an biasing force to the lens holder toward the piezoelectric actuator through the ball member. The lens holder has a projection projecting outward from an outer peripheral surface and extending in a direction intersecting the projecting direction and optical axis. A side wall face of the projection is formed with a groove extending along the optical axis and engaging the ball member. A position receiving the biasing force from the biasing member and a position receiving the drive force from the actuator in the lens holder oppose each other through the projection interposed therebetween.

Abstract: A spring plate includes a plate body having a through hole defined at the center thereof, and a terminal perpendicularly extending from the plate body. The plate body includes an outer closed-loop frame, an inner closed-loop frame, and spring parts interconnected between the outer closed-loop frame and the inner closed-loop frame. The terminal has an end portion distal from the plate body with at least one of a through hole and a recess therein.

Abstract: A voice coil motor includes an outer shell, a fastening member, magnetic members, a base, first and second elastic members, and a movable assembly. The outer shell has a through hole defined therein and includes sidewalls surrounding the through hole. The first elastic member includes a ring-shaped first elastic portion. The fastening member fastens the first elastic member on the outer shell. The magnetic members are mounted on the inside of the sidewalls, respectively. The second elastic member is fixed on the base and includes a ring-shaped second elastic portion. The movable assembly includes a retainer wrapped in a coil of wire, the retainer is connected to the first and second elastic portions, and is movable in the outer shell under an interaction between the magnetic members and the coil of wire. A camera module using the voice coil motor is also provided.

Abstract: A lens barrel is provided that includes an image optical system with an optical axis. The lens barrel has a first lens, a second lens, a guide shaft, and a driving unit, an adjusting mechanism, and a base frame. The adjusting mechanism is coupled to the guide shaft and has a first and a second portion. The first portion is deflectable and supports one end of the guide shaft. The second portion is configured to press against the first portion to deflect the first portion at an angle relative to the optical axis. The adjusting mechanism is configured to adjust the position of the guide shaft. The guide shaft is arranged to at least partially overlap the driving unit in the circumferential direction around the optical axis, and the first lens is arranged to at least partially overlap the adjusting mechanism in the radial direction relative to the optical axis.

Abstract: An exemplary piezoelectric actuator includes a fixed barrel defining a first receiving cavity, a movable barrel in the first receiving cavity for receiving a lens module, a piezoelectric driving module driving the movable barrel to move relative to the fixed barrel along an optical axis of the lens module, and a preloading module. The movable barrel defines a second receiving cavity for receiving the lens module. The piezoelectric driving module includes a piezoelectric member attached on the sidewall of the fixed barrel, and a friction member attached on the sidewall of the movable barrel. The piezoelectric member is opposite to the friction member. The preloading module is arranged between the fixed barrel and the movable barrel. The preloading module is opposite to the piezoelectric driving module for exerting a pressure to the movable barrel, thereby making the friction member resist against the piezoelectric member.

Abstract: In a lens driving device, magnetic attraction plates that are magnetic bodies are disposed on a fixed frame at both ends of a movement region of a movable unit. Therefore, when the movable unit moves in the fixed frame to one side or to the other side in the fixed frame and reaches a position at either end of the fixed frame, magnets on the movable unit are magnetically attracted to the magnetic attraction plates on the fixed frame continuously. As a result, the movable unit can be retained at the position even when the coil becomes de-energized.

Abstract: A lens front cap module and an image pickup apparatus having a zooming barrel, a focusing barrel and a lens front cap body. Both zooming barrel and focusing barrel are hollow barrel shaped structures. The focusing barrel is installed in the zooming barrel. An abutting portion is formed on an inner wall of the zooming barrel. The lens front cap body comprises a driving plate and a vane module. The driving plate is installed at an end of the zooming barrel and has a central window aperture. A driving pin is axially extended from the driving plate. The vane module is disposed on a side of the zooming barrel for shielding or unshielding the central window aperture. When the abutting portion abuts the driving pin, the driving pin drives the driving plate to rotate, and to drive the vane module to shield the central window aperture.

Abstract: Provided is a lens barrel including a subject-side lens guided by guide bars, comprising a first guide shaft that is disposed within a cylindrical fixed cylinder and oriented along an axial direction of the fixed cylinder; a second guide shaft that is disposed outside the fixed cylinder and oriented along the axial direction, and arranged such that at least a portion thereof overlaps with the first guide shaft in a longitudinal direction of the first guide shaft; a first holding member that holds a first lens, includes a first engaging member that engages with the first guide shaft, and moves along the first guide shaft; and a second holding member that holds a second lens positioned on a subject side of the first lens, includes a second engaging member that engages with the second guide shaft, and moves along the second guide shaft, wherein at least a portion of movement range of the first engaging member on the first guide shaft overlaps in the axial direction with at least a portion of movement range of th

Abstract: Disclosed are a lens actuator and a camera module having the lens actuator. The lens actuator, which includes: a housing; a magnet installed in the housing; a lens holder supporting a lens and installed to ascend and descend in the housing; a spring coupled to the lens holder and supported by the housing to elastically support the lens holder; and a coil coupled to the lens holder in such a way that the coil faces the magnet, a lead line of the coil being interposed between the lens holder and the spring, forms an electric connection structure between the coil and the spring that durable against shocks and humidity, improving the reliability of electric connection, and simplifies the connection structure between the spring and the coil, making it easier to manufacture the lens actuator.

Abstract: A lens module includes an image lens module and a voice coil motor (VCM) supported on the image lens module. The image lens module includes a seat and an elastic element. The seat includes a top surface and a bottom surface opposite to the top surface and defines a notch on the top surface. The elastic element is received in the notch, and part of the elastic element protrudes out of the notch. The VCM includes a lower plate supported on the top surface and the part of the elastic element protruding out of the notch.

Abstract: A voice coil motor includes a lens retainer, a wire, and an elastic electrode member. The lens retainer includes an end portion. The wire wraps around the lens retainer and includes a first end and a second end. The elastic electrode member is metal and is mounted to the end portion. The elastic member includes a first elastic metal sheet and a second elastic metal sheet. The first elastic metal sheet includes a first electrode. The second elastic plate is physically separated from the first elastic sheet and includes a second electrode. The first end and the second end are respectively soldered to the first electrode and the second electrode.

Abstract: An auto-focusing lens module includes a substrate, guiding members positioned on the substrate, an actuator unit, a driving plate, and a lens holder holding a lens therein. The driving plate includes an upper surface and first protrusions on the upper surface in a first circle. A height of each first protrusion gradually decreases along a circumferential direction. The lens holder includes a bottom surface and second protrusions on the bottom surface in a second circle. A height of each second protrusion gradually increases along the circumferential direction. Each second protrusion rests on a respective first protrusion. The guiding members guide the lens holder to move along an optical axis of the lens module. The actuator unit drives the driving plate to rotate, such that the driving plate drives the lens holder to move long the optical axis by the engagement of each second protrusion with the respective first protrusion.