Abstract: A lens driving device according to an embodiment comprises: a movable unit on which at least one lens is mounted; a first coil and a driving magnet which face and interact with each other such that the movable unit is moved in the optical axis direction of the lens; a position sensor for sensing the position of the movable unit in the optical axis direction or a driver comprising the position sensor; and a positively magnetized magnet arranged to face the position sensor or the driver, wherein the positively magnetized magnet comprises a first side surface, which faces the position sensor and has a first polarity, and a second side surface, which faces the position sensor, which is arranged to be spaced from the first side surface in a direction parallel with the optical axis direction or arranged to abut the first side surface, and which has a second polarity that is the opposite of the first polarity of the first side surface, and the length of the first side surface in the optical axis direction may be equ

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 lens driving device is provided, the lens driving device includes: a housing; a bobbin disposed inside of the housing; a support member coupled to the bobbin and the housing; and a sensor sensing a position of at least one of the bobbin and the housing, wherein the support member may include a first support unit, and a second support unit disposed not parallel to the first support unit, wherein the sensor may be disposed more adjacent to the first support unit than to the second support unit, and wherein an elastic modulus of the first support unit may be lower than an elastic modulus of the second support unit.

Abstract: An optical element driving mechanism is provided, including: a movable portion for holding an optical element; a fixed portion comprising a case and a bottom arranged along a main axis, wherein the case includes: a top plate extended along a direction that is perpendicular to the main axis; a sidewall extended from edges of the top plate along the main axis and fixed on the bottom, wherein the sidewall includes: a first surface parallel to the main axis; a second surface connected to the first surface and is not parallel to the first surface; and a third surface opposite to the second surface and is not parallel to the first surface; and an adhesive element, wherein the case is connected to the bottom through the adhesive element, and the adhesive element is in direct contact with the second surface and the third surface.

Abstract: A lens moving apparatus can include a housing; a base disposed below the housing; a bobbin disposed inside the housing and configured to move in a first direction along or parallel with an optical axis within the housing; driving magnets disposed on the housing; a coil provided at an outer surface of the bobbin; an elastic member coupled to the bobbin and supporting the bobbin; a sensing magnet coupled to the bobbin; and a position sensor coupled to a printed circuit board, wherein the position sensor is configured to sense a displacement of the sensing magnet in the first direction, in which the bobbin includes a reception recess formed on the outer surface of the bobbin such that at least a part of the reception recess is located at an inside of the coil, the sensing magnet is disposed in the reception recess, and the position sensor is disposed on another side of the housing than sides on which the driving magnets are disposed.

Abstract: A camera module having a case coupled to a base part to form an internal space; a lens module disposed in the internal space; and an auto-focusing driving part comprising a first magnet attached to one surface of the lens module and a first coil disposed to face the first magnet, wherein the base part has a first board on which an image sensor is disposed, and a fixing part on one side portion of the base part and extending from the base part in an optical axis direction, and wherein other side portions of the base part exclude the fixing part.

Abstract: The present embodiments relates to a lens driving device comprising: a housing; a bobbin disposed in the housing; a coil disposed on the bobbin; a first magnet which is disposed on the housing and faces the coil; a second magnet disposed on the bobbin; and a sensor which is disposed on the housing and faces the second sensor, wherein the sensor comprises an upper surface, a lower surface disposed opposite the upper surface, an inner surface facing the second magnet, an outer surface disposed opposite the inner surface, and both lateral surfaces connecting the inner surface with the outer surface, the upper surface and the lower surface of the sensor are fixed to the housing, and one of the side surfaces of the sensor is opened.

Abstract: An optical element driving mechanism is provided. The optical element driving mechanism has a main axis, and includes a fixed portion, a movable portion, and a driving assembly. The fixed portion includes a housing, a base, and a frame. The base is fixedly connected to the housing along the main axis. The frame is disposed in the housing, and has a plurality of protruding columns extending along the main axis. The protruding columns have a first section and a second section, and the first section is closer to the base than the second section. The movable portion is movable relative to the fixed portion, and carries an optical element. The shortest distance between the first section and the movable portion is longer than the shortest distance between the second section and the movable portion. The driving assembly drives the movable portion to move relative to the fixed portion.

Abstract: The present embodiments relates to a lens driving device comprising: a housing; a bobbin disposed in the housing; a coil disposed on the bobbin; a first magnet which is disposed on the housing and faces the coil; a second magnet disposed on the bobbin; and a sensor which is disposed on the housing and faces the second sensor, wherein the sensor comprises an upper surface, a lower surface disposed opposite the upper surface, an inner surface facing the second magnet, an outer surface disposed opposite the inner surface, and both lateral surfaces connecting the inner surface with the outer surface, the upper surface and the lower surface of the sensor are fixed to the housing, and one of the side surfaces of the sensor is opened.

Abstract: A photosensitive element driving mechanism includes a fixed assembly, a first movable assembly, a photosensitive element and a first driving assembly. The first movable assembly includes a circuit member, and the circuit member includes a circuit member body and a movable cantilever. The photosensitive element is configured to receive light along an optical axis. The photosensitive element is disposed on and is electrically connected to the circuit member. The first driving assembly is configured to drive the first movable assembly to move relative to the fixed assembly. The movable cantilever has a first segment extending in a direction different from the optical axis, the first segment is electrically connected to the photosensitive element and the fixed assembly, and the first movable assembly moves relative to the fixed assembly through the movable cantilever. There is a gap between the first movable assembly and the fixed assembly.

Abstract: An optical system is provided, including: a base; a first driving module, including: a first holder configured to receive a first optical element and having a first side; a first coil disposed on the first holder; at least one first magnet adjacent to the first coil; and a second driving module, including: a second holder configured to receive a second optical element and having a second side; a second coil disposed on the second holder; and at least one second magnet adjacent to the second coil; wherein the first side is adjacent to the second side, and no magnet is disposed on the first side or the second side.

Abstract: A voice coil motor strongly attached to the base of a camera module comprises the base and a casing. The casing and the base are interlocked with each other. The casing is a hollow structure. The casing comprises a top surface and a side wall surrounding the top surface. The side wall and the base are engaged with each other. The side wall is extended in parts to form at least one extending leg. The extending leg extends to a side of the base away from the top surface and is bent toward the base.

Abstract: A lens driving device being capable of stabilizing a motion of a lens holder is provided. A lens driving device includes a lens holder configured to support a lens, a frame surrounding a periphery of the lens holder, and a support mechanism configured to support the lens holder so as to be freely movable relative to the frame in an optical axis direction of the lens. The support mechanism includes a support member provided in the frame and a guide portion provided in the lens holder. The support member extends in the optical axis direction of the lens, and the support member is in contact with the guide portion at least at two points in a cross section orthogonal to the optical axis direction of the lens.

Abstract: Embodiments provide systems and methods for providing a dynamically variable focal plane in a waveguide-based display. Generally speaking, embodiments described herein provide an optical system that allows variable control of the focal length of the image emerging from the display engine into the waveguide. This can be a dynamic system that is controlled based upon the content being projected on the display. For a stereoscopic system, individual control of each eye can be provided. More specifically, embodiments comprise an electrically tunable lens element interposed between the output of the projection engine and the optical waveguide and a control unit to dynamically the tunable lens element to vary the focal length of the images provided to the waveguide display.

Abstract: An image sensor includes a pixel array including multiple pixels. A lens is provided on an optical path of incident light to the image sensor. An actuator includes a coil, and supports positioning of the lens according to a driving signal applied to the coil. A position detection coil is arranged such that it magnetically couples with the coil of the actuator. An actuator driver supplies a pulse-shaped driving signal to the coil of the actuator driver. A position detection circuit generates a position detection signal that indicates the position of the lens based on an induced electromotive force that occurs in the position detection coil according to the driving signal, and feeds back the position detection signal to the actuator driver.

Abstract: An example optical substrate, according to aspects of the present disclosure, includes a support structure, a plurality of optical components, and a plurality of flexures. Each flexure is engaged with the support structure and a respective optical component for allowing independent lateral movements of the optical components during assembly of the optical substrate with another layer of an optical assembly.

Abstract: An optical member driving mechanism is provided. The optical member driving mechanism includes a fixed portion, a movable portion, and a driving assembly. The fixed portion includes a housing, a frame, a circuit component, and a base. The housing includes a top wall and a plurality of sidewalls, forming a first containing space. The frame is disposed in the first containing space, and has a second containing space. The circuit component is disposed in the frame. The base is connected to the housing. The movable portion is movably connected to the fixed portion, and carries an optical member. The top wall is perpendicular to an optical axis. The sidewalls extend from the top wall along the optical axis. The driving assembly drives the movable portion to move relative to the fixed portion, is electrically connected to the circuit component and partially disposed in the second containing space.

Abstract: Embodiments provide a lens moving apparatus including a bobbin having a lens barrel, a housing configured to accommodate the bobbin, an upper elastic member coupled to the bobbin and the housing, a lower elastic member coupled to the bobbin and the housing, a first coil disposed on the bobbin, a first magnet disposed on the housing, a circuit board disposed below the housing, a second coil disposed on the circuit board, a first sensor to output a first output signal based on a sensed result of a magnetic field strength of the first magnet, a first capacitor connected in parallel to the first sensor.

Abstract: A vibration wave motor includes a first holding member; a second holding member; a first regulating region; and a second regulating region, wherein a position of a first contact region of the first holding member, which comes into contact with the first regulating region, is different from a position of a second contact region of the second holding member, which comes into contact with the second regulating region, and wherein a position of the first regulating region is different from a position of the second regulating region in the relative movement direction so that, in the relative movement direction, a difference between a distance from the first contact region to the first regulating region and a distance from the second contact region to the second regulating region is shorter than a difference between the position of the first contact region and the position of the second contact region.

Abstract: A vibration wave motor including: a vibrator; a friction member; and a pressurizing member configured to press the vibrator and the friction member into contact with each other. The vibrator and the friction member are relatively moved in a direction orthogonal to the pressurizing direction of the pressurizing member by vibrations generated on the vibrator, the vibrator and the friction member are configured so as to move in parallel with the pressurizing direction with respect to a fixed member, and the vibration wave motor further includes at least one first restricting portion that restricts a movable amount of the friction member in the pressurizing direction and at least one second restricting portion that restricts a movable amount of the vibrator in the pressurizing direction, such that the movable amount of the friction member is smaller than the movable amount of the vibrator in the pressurizing direction.

Abstract: Disclosed is a lens moving apparatus. The lens moving apparatus includes a moving unit having at least one lens installed therein and moving by electromagnetic interaction between magnets and coils, elastic members configured to support the moving unit, and position sensors configured to sense change of electromagnetic force emitted from the magnets according to movement of the moving unit and to output an output signal based on a result of sensing, and a primary resonant frequency of frequency response characteristics according to gain of a ratio of the output signal of the position sensors to an input signal applied to the coils is 30 Hz to 200 Hz.

Abstract: An optical element driving mechanism is provided that includes a fixed assembly, a movable assembly, a driving assembly, and a circuit assembly. The movable assembly is configured to be connected to an optical element, and the movable assembly is movable relative to the fixed assembly. The driving assembly is configured to drive the movable member to move relative to the fixed assembly. The circuit assembly is electrically connected to the driving assembly, and the circuit assembly includes an electrical connection element having a resin material.

Abstract: A camera module is disclosed, the camera module including a PCB (Printed Circuit Board), a base arranged at an upper surface of the PCB, a holder member arranged at an upper surface of the base and formed with a plurality of magnet reception portions, a surface of which facing the base is opened, and a plurality of magnets coupled to the magnet reception portions, wherein the base is formed with a protrusion configured to support a bottom surface of the magnet by being protrusively formed at a position corresponding to an opening of the magnet reception portions.

Abstract: An holding device can hold an optical component and a masking component with high precision in a simple configuration and a limited space. A first holding member includes a first receiving face that is in contact with a first optical component in an optical axis direction to fix a position of the first optical component in the optical axis direction and a second receiving face that is in contact with a second optical component in the optical axis direction to fix a position of the second optical component in the optical axis direction.

Abstract: An optical driving mechanism is provided, configured to force an optical element, including a base, a movable portion, and a driving portion. The movable portion is disposed and connected to the base. The movable portion includes a holder configured to sustain the optical element, a magnetic element, and a fixing member. The magnetic element and the fixing member are affixed to the holder, wherein the fixing member has a permeable material. The driving portion is configured to force the movable portion to move relative to the base, wherein the driving portion includes a piezoelectric element and a support member connecting thereto. The piezoelectric element and the support member are disposed on the base and connected to the movable portion. The fixing member makes contact with the support member via a magnetic attraction force between the magnetic element and the fixing member.

Abstract: An optical system is provided, including a holder, a fixed module, a driving assembly, and a first resilient member. The holder is used for holding an optical element that defines an optical axis. The fixed module is movably connected to the holder and has a housing and a base connected to the housing. The base has a bottom surface parallel to the optical axis and a first pillar forming a first surface that is not parallel to the optical axis. The driving assembly drives the holder to move relative to the fixed module. The first resilient member is disposed on the first surface and movably connects the holder with the fixed module.

Abstract: The present embodiment relates to a dual camera module comprising: a substrate; a first image sensor disposed on the substrate; a second image sensor disposed on the substrate while being spaced apart from the first image sensor; a housing disposed on the upper side of the substrate; a first bobbin disposed on the upper side of the first image sensor inside the housing; a second bobbin disposed on the upper side of the second image sensor inside the housing; a first coil disposed in the first bobbin; a second coil disposed in the second bobbin; and a first magnet which is disposed between the first coil and the second coil and faces the first coil and the second coil.

Abstract: The present embodiment relates to a lens driving device comprising: a housing; a bobbin disposed inside the housing; a coil disposed at the bobbin; a magnet disposed in the housing and facing the coil; an elastic member coupled to the housing and the bobbin; and a damper disposed at the elastic member, wherein the elastic member comprises an outer part coupled to the housing, an inner part coupled to the bobbin, and a connection part for connecting the outer part and the inner part; and the damper is disposed at the connection part.

Abstract: An optical system includes a base, a first lens driving module, and a second lens driving module. The first lens driving module includes a first lens holder, a first magnet, and a first coil. The first lens holder is configured to hold a first optical element. The first coil corresponding to the first magnet is configured to drive the first lens holder to move relative to the base. The second lens driving module includes a second lens holder, a second magnet, and a second coil. The second lens holder is configured to hold a second optical element. The second coil corresponding to the second magnet is configured to drive the second lens holder to move relative to the base. The first magnet is disposed between the first and second lens holders, and no other magnet is disposed between the first and second lens holders except the first magnet.

Abstract: A voice coil motor includes a base, a housing, a lower-resilient member, a lens frame, a coil, a magnet, an upper-resilient member, an upper cover plate, and a pin arranged on the base. The lower-resilient member, the lens frame, the coil, the magnet, the upper-resilient member, and the upper cover plate are arranged in sequence between the base and the housing. The lens frame and the coil are integrally formed. The coil surrounds an outer surface of the lens frame.

Abstract: A suspension spring may suspend an optical component for a camera or other device that implements the optical component to focus light being captured by an image sensor. The suspension spring may move along with the optical component that it suspends as a result of manual or automated focus changes that change the position of the optical component along an optical axis. The suspension spring may make contact with surfaces of other components or materials in the cameras or other systems. Those surfaces of the suspension spring that can make contact may be blunted to prevent the generation of loose particles that can interfere with the image sensor.

Abstract: A lens drive device, including a screening can (01); periphery of the inside an upper cover (05) and driving magnets (08); a lens support (06) is further provided inside the screening can (01); a driving coil (07) is winded at a outer periphery of the lens support (06); the driving magnets (08) include a first driving magnet and a second driving magnet; a structure of each of the first driving magnet and the second driving magnet includes corner segment (082) distributed along a corner of the screening can (01) and edge segment (081) distributed along an edge of the screening can (01); and the first driving magnet and the second driving magnet are in a central symmetry around an axial center of the lens drive device. By improving a structure of the lens drive device, the lens drive device has beneficial effects of low power consumption and large driving force.

Abstract: A pop-out camera module includes: a module housing, a camera housing, a plurality of coils, a first magnet and a second magnet, wherein a pop-out hole of the camera housing is formed on the module housing, and a camera is disposed inside the upper part of the camera housing; the plurality of coils are disposed in parallel and axially surround an outer wall below the camera housing; and the first magnet and the second magnet are disposed in the module housing, and the plurality of coils are located between the first magnet and the second magnet.

Abstract: An interactive display includes a display capable of generating displayed images, and first and second eyepiece assemblies each including one or more variable-focus lenses. The eyepiece assemblies, variable-focus lenses and display allow the user to perceive a virtual 3D image while providing visual depth cues that cause the eyes to accommodate at a specified fixation distance. The fixation distance can be adjusted by changing the focal power of the variable-focus lenses.

Abstract: A lens barrel that is capable of miniaturizing and thinning an image pickup apparatus by enabling to switch manual lens drive and electric lens drive with a simple mechanism. A lens barrel is mounted on an image pickup apparatus that supports an operation member rotatably. A drive barrel engages with a lens holding member to drive it in an optical axis direction. A motor transfers rotation to the drive barrel through a transfer mechanism. A switching mechanism switches between electric lens drive that drives the lens holding member by transferring rotation of the motor to the drive barrel and manual lens drive that drives the lens holding member by transferring rotation of the operation member to the drive barrel via an elastic member that rotates together with the operation member according to a user's operation. The drive barrel engages with the elastic member while shifting to a photographing area.

Abstract: A lens moving apparatus, according to one embodiment, comprises: a bobbin having a first coil installed on the outer circumferential surface thereof; a location detection sensor equipped to the bobbin; a housing in which the bobbin is provided; an upper elastic member disposed on the upper side of the housing; and a support member that supports the housing such that the housing can move in a second or third direction that is perpendicular to a first direction, wherein the upper elastic member is divided into a plurality of parts, at least two of which are disposed parallel to each other on the x-y plane in the second or third direction and are disposed such that end portions thereof face each other.

Abstract: A lens assembly includes a lens including an optical portion to refract light and a flange portion extended along a periphery of at least a portion of the optical portion, and a lens barrel to accommodate the lens. The flange portion has a non-circular shape and includes a first di-cut portion on a first side surface of the flange portion, a second di-cut portion on a second side surface of the flange portion, and arc portions connecting the first di-cut portion and the second di-cut portion. A first distance between the first di-cut portion and an optical axis of the lens and a second distance between the second di-cut portion and the optical axis of the lens are smaller than a distance between respective opposite ends of the arc portions and the optical axis.

Abstract: Methods and systems for controlling a surgical microscope. Moveable optics of the surgical microscope are controlled using two sets of control parameters, to reduce jitter and image instability. Shifts in the image due to changes in temperature or due to the use of optical filter can also be compensated. Misalignment between the mechanical axis and the optical axis of the surgical microscope can also be corrected.

Abstract: The invention provides an insert molded lens driving apparatus including a driving coil having two ends, wherein the lens holder includes multiple insert members for electrical connection partially embedded into the lens holder and spaced apart from each other. Each of the insert members electrically coupled to the driving coil and having a first connecting end extending along a first direction and a second connecting end extending along a second direction, which.

Abstract: A piezoelectric drive device includes a piezoelectric actuator which includes a vibration portion that vibrates and a protruding portion that protrudes from the vibration portion, a driven member, an optical scale, a sensor which receives transmitted light or reflected light from the optical scale and outputs a signal in accordance with intensity of the received light, in which a facing area of the optical scale and the sensor is disposed to be deviated to one side in a direction in which the optical scale and the sensor are aligned with respect to a contact portion between the protruding portion and the driven member.

Abstract: A lens driving device (12) includes a lens support (20) configured to support a lens, a frame member (22) surrounding a periphery of the lens support (20), and a support mechanism (38) configured to support the lens support (20) so as to be freely movable relative to the frame member (22) in a direction orthogonal to an optical axis direction of the lens. The support mechanism (38) includes a support portion (44, 48) and a guiding portion (46, 50). The support portion (44, 48) and the guiding portion (46, 50) extend in the direction orthogonal to the optical axis direction of the lens, and the support portion (44, 48) is in contact with the guiding portion (46, 50) at least at two points in a cross section in the optical axis direction of the lens.

Abstract: Provided are a lens drive motor, a camera and a mobile terminal apparatus. The lens drive motor includes a housing, a lens support, a coil and a magnet component; the coil is wrapped around the lens support and is provided in the housing; the magnet component includes multiple sub-magnets; the multiple sub-magnets are sequentially arranged around a circumferential direction of the coil and are positioned in the housing, wherein each of at least two first sub-magnets of the multiple sub-magnets is of a bent type structure; multiple straight edge segments and multiple corner segments connecting the multiple straight edge segments are included at an outer periphery of the lens support; and outsides of the multiple straight edge segments are covered by the multiple sub-magnets. According to the lens drive motor, a problem of insufficient driving force of the lens drive motor in the related art is solved.

Abstract: An embodiment comprises: a housing comprising a plurality of protrusions arranged on the upper surface thereof; a magnet arranged on a side portion of the housing; a bobbin having a first coil arranged on the outer peripheral surface thereof, the bobbin being configured to move by means of an interaction between the magnet and the first coil; an upper elastic member coupled to the bobbin and to the housing; and a sensing coil arranged on the side portion of the housing between the protrusions and the magnet, the sensing coil being configured to generate an induction voltage by means of an interaction with the first coil, wherein at least a part of the upper elastic member is arranged on the upper surface of the housing between the protrusions.

Abstract: Some embodiments include a camera system having a first camera unit and a second camera unit. The first camera unit includes an autofocus actuator. The autofocus actuator includes a first plurality of magnets for autofocus motion control of components of a first optical package. The first plurality of magnets is positioned to generate magnetic fields aligned in parallel with a first magnetic axis at a right angle to the optical axis of the first optical package. The second camera unit includes an optical image stabilization and autofocus actuator. The optical image stabilization and autofocus actuator includes a second plurality of magnets positioned to generate magnetic fields aligned along a second magnet axis at 45-degrees to the first magnetic axis. The second camera unit includes a third plurality of magnets positioned to generate magnetic fields aligned along a third magnetic axis at 135-degrees to the first magnetic axis.

Abstract: A driving mechanism is provided, including a base unit, a frame, a holder, a first driving assembly, a sensing magnet, and a magnetic field sensor. The base unit has a polygonal structure. The frame is connected to the base unit. The holder is connected to the frame for holding an optical element, wherein the optical element defines an optical axis. The first driving assembly is disposed on the base unit and the frame, close to a first side of the base unit for driving the holder and the frame to move relative to the base unit along a horizontal direction perpendicular to the optical axis. The sensing magnet is disposed on the holder and close to a second side of the base unit, opposite to the first side. The magnetic field sensor is disposed on the base unit for sensing the sensing magnet.

Abstract: Autofocus actuator for camera modules comprising a SMA wire (17) as actuating element and at least six spheres (27) as sliding aids contained in at least three slots (26) formed in a lens carrier (12) and symmetrically arranged around a guide pin (15) mounted on a bottom plate (13), whereby the guide pin (15), slots (26) and spheres (27) form a linear bearing for the sliding axial movement of the lens carrier (12) on the bottom plate (13), whereby two sets of additional spheres, each set comprising at least two spheres, are kept in position by a sphere stopping structure.

Abstract: A voice coil motor in a camera module with a means of being mounted robustly on a base comprises a casing and the base. The casing is hollow, the casing comprises a top surface and a side wall around the top surface. The base comprises a base portion and projections, the base portion being in contact with the side wall of the casing and engaged with the casing to form a cavity. The side wall is provided with recesses external to the cavity to accept the projections, the projections lending structural reinforcement to the casing.

Abstract: The present invention is a mechanism to achieve autofocus (AF) and optical image stabilization (OIS) to counteract hand-shake by tilting the lens and the image sensor simultaneously such that no vignetting effect is introduced to the image. The present invention removes the blur or distortion (vignetting effect) by incorporating an actuator beneath the image sensor to tilt the image sensor in conjunction with the lens barrel tilt to achieve OIS. Such simultaneous and coordinated tilting to the optical elements in the camera (lens barrel and image sensor) guarantees that the plane of the reflected image and the plane of the image sensor are both parallel, and aberrations free images are constructed.

Abstract: The disclosure provides a moving apparatus for a projector. The projector includes a body, a processing unit and a projection lens. The moving apparatus includes a base having a through-base opening. At least one moving stage movably disposed on a front side surface of the base along a plane and has at least one through-stage opening aligned with the through-base opening. At least one magnetic component disposed on a carrier board, wherein a projection position of the projection lens is positioned by the at least one magnetic board through magnetic attraction. The at least one magnetic component is electrically connected to the processing unit.

Abstract: A lens driving device according to an embodiment comprises: a movable unit on which at least one lens is mounted; a first coil and a driving magnet which face and interact with each other such that the movable unit is moved in the optical axis direction of the lens; a position sensor for sensing the position of the movable unit in the optical axis direction or a driver comprising the position sensor; and a positively magnetized magnet arranged to face the position sensor or the driver, wherein the positively magnetized magnet comprises a first side surface, which faces the position sensor and has a first polarity, and a second side surface, which faces the position sensor, which is arranged to be spaced from the first side surface in a direction parallel with the optical axis direction or arranged to abut the first side surface, and which has a second polarity that is the opposite of the first polarity of the first side surface, and the length of the first side surface in the optical axis direction may be equ