Camera actuator and camera module comprising same

Abstract

According to an embodiment of the present invention, the camera actuator comprises: a fixed portion; a first movable portion disposed on the fixed portion; a second movable portion disposed in the first movable portion; a first driving portion for moving the first movable portion in the optical axis direction; a second driving portion for moving the second movable portion in a first direction perpendicular to the optical axis direction; a first guide magnet portion disposed on the first movable portion; and a second guide magnet portion disposed on the fixed portion. The first guide magnet portion and the second guide magnet portion face each other.

Description

Camera actuator and camera module including the same

[0001] The present invention relates to a camera actuator and a camera module including the same.

[0002] A camera is a device that captures images or videos of a subject, and is installed in portable devices, drones, vehicles, etc. Camera modules may have an image stabilization (IS) function that compensates for or prevents image shaking caused by the user's movements to improve image quality, an auto focusing (AF) function that automatically adjusts the distance between the image sensor and the lens to align the focal length of the lens, and a zooming function that increases or decreases the magnification of a distant subject and captures it using a zoom lens.

[0003] However, there are issues with optical performance degradation due to decentering and tilt in miniaturized camera modules. Furthermore, there is a growing demand for improved reliability, including protection against ingress of contaminants into circuit elements.

[0004] The technical problem to be solved by the present invention is to provide a camera actuator and a camera module including the same.

[0005] In order to solve the above technical problem, a camera actuator according to the present embodiment includes a fixed part; a first moving part disposed on the fixed part; a second moving part disposed within the first moving part; a first driving part that moves the first moving part in the direction of an optical axis; and a second driving part that moves the second moving part in a first direction perpendicular to the direction of the optical axis; a first guide magnet part disposed on the first moving part; and a second guide magnet part disposed on the fixed part, wherein the first guide magnet part and the second guide magnet part face each other.

[0006] The first guide magnet portion may include a first guide magnet and a third guide magnet symmetrically arranged on both sides of the first driving portion, and the second guide magnet portion may include a second guide magnet facing the first guide magnet and a fourth guide magnet facing the third guide magnet.

[0007] The first guide magnet portion may include a fifth guide magnet opposite the first guide magnet and a seventh guide magnet opposite the third guide magnet, and the second guide magnet portion may include a sixth guide magnet facing the fifth guide magnet and an eighth guide magnet facing the seventh guide magnet.

[0008] The first guide magnet, the second guide magnet, the fifth guide magnet, and the sixth guide magnet may overlap in the first direction, and the third guide magnet, the fourth guide magnet, the seventh guide magnet, and the eighth guide magnet may overlap in the first direction.

[0009] The length of the second guide magnet portion in the optical axis direction may be greater than the length of the first guide magnet portion in the optical axis direction.

[0010] The first guide magnet portion and the second guide magnet portion may have the same polarity.

[0011] The first guide magnet portion and the second guide magnet portion may have magnets having different polarities arranged in a crosswise manner along the optical axis direction, and a magnet having one polarity in the second guide magnet portion may be arranged to face two magnets having different polarities in the first guide magnet portion.

[0012] The first guide magnet section may have magnets of the S pole, the N pole, the S pole, and the N pole arranged in a cross pattern along the optical axis direction, and the second guide magnet section may have magnets of the S pole and the N pole arranged in a cross pattern along the optical axis direction.

[0013] In order to solve the above technical problem, a camera actuator according to another embodiment of the present invention includes a fixed part; a first moving part disposed on the fixed part; a second moving part disposed within the first moving part; a first driving part that moves the first moving part in the direction of an optical axis; and a second driving part that moves the second moving part in a first direction perpendicular to the direction of the optical axis; a first guide magnet part disposed on the first moving part; and a guide coil part disposed on the fixed part, wherein the first guide magnet part and the guide coil part may face each other.

[0014] The length of the above guide coil portion in the optical axis direction may be greater than the length of the above first guide magnet portion in the optical axis direction.

[0015]

[0016] In order to solve the above technical problem, a camera actuator according to the present embodiment includes a fixed part; a first moving part disposed on the fixed part; a second moving part disposed within the first moving part; a first driving part that moves the first moving part in the direction of an optical axis; a second driving part that moves the second moving part in a first direction perpendicular to the direction of the optical axis; a first guide magnet part disposed on the first moving part; and a second guide magnet part disposed on the fixed part, wherein at least one of the first guide magnet part and the second guide magnet part is an electromagnet.

[0017] The above first guide magnet portion and the above second guide magnet portion can face each other.

[0018] The first guide magnet portion and the second guide magnet portion may have the same polarity.

[0019] The first guide magnet portion may include a first guide magnet and a third guide magnet symmetrically arranged on both sides of the first driving portion, and the second guide magnet portion may include a second guide magnet facing the first guide magnet and a fourth guide magnet facing the third guide magnet.

[0020] The first guide magnet portion may include a fifth guide magnet opposite the first guide magnet and a seventh guide magnet opposite the third guide magnet, and the second guide magnet portion may include a sixth guide magnet facing the fifth guide magnet and an eighth guide magnet facing the seventh guide magnet.

[0021] The length of the second guide magnet portion in the optical axis direction may be greater than the length of the first guide magnet portion in the optical axis direction.

[0022] In order to solve the above technical problem, a camera actuator according to another embodiment of the present invention includes a fixed part; a first moving part disposed on the fixed part; a second moving part disposed within the first moving part; a first driving part moving the first moving part in the direction of an optical axis; and a second driving part moving the second moving part in a first direction perpendicular to the direction of the optical axis, wherein the fixed part may include a first protruding part protruding inwardly from a side wall and a first space formed by the first protruding part and the side wall of the fixed part, and the first moving part may include a second protruding part protruding outwardly from the side wall and a second space formed by the second protruding part and the side wall of the first moving part.

[0023] The first protruding portion of the fixed portion may be arranged in the second space portion of the first movable portion, and the second protruding portion of the first movable portion may be arranged in the first space portion of the fixed portion.

[0024] A first guide magnet part may be arranged on a surface of the second protrusion facing the side wall of the first moving part, and a second guide magnet part may be arranged on a surface of the first protrusion facing the side wall of the fixed part.

[0025] At least one of the first guide magnet portion and the second guide magnet portion may be an electromagnet.

[0026] According to an embodiment of the present invention, the dynamic tilt effect due to the squareness and flatness of an injection part can be minimized through an actuator having a magnetic levitation structure, and since a guide ball is not used, dents due to impact can not occur.

[0027] In addition, a camera actuator and camera device with improved reliability of elements in optical alignment can be implemented.

[0028] In addition, it is possible to implement a camera actuator and camera device with improved reliability by protecting circuit elements, etc. from the inflow of foreign substances.

[0029] In addition, a camera actuator and camera device can be implemented that further improve the flatness of the guide section by adding protrusions, etc. to the housing, thereby minimizing decentering and tilt.

[0030] The technical problem to be solved by the present invention is to implement a camera actuator applicable to ultra-slim, ultra-small, and high-resolution cameras.

[0031] The various advantageous and beneficial effects of the present invention are not limited to the above-described contents, and will be more easily understood in the course of explaining specific embodiments of the present invention.

[0032] Figure 1 is a perspective view of a camera module according to the present embodiment.

[0033] Figure 2 is an exploded perspective view of a camera module according to the present embodiment.

[0034] Figure 3 is a perspective view of a base according to the present embodiment.

[0035] Fig. 4 is a perspective view of an AF carrier according to the present embodiment.

[0036] Figure 5 is a cross-sectional view taken along line A-A' of Figure 1.

[0037] FIG. 6 is a drawing for explaining a magnetic levitation operation according to another embodiment of the present invention.

[0038] Fig. 7 is a cross-sectional view of a camera module according to the present embodiment.

[0039] Figure 8 is an enlarged view of areas A and B of Figure 7.

[0040] Figure 9 is a cross-sectional view of a camera module according to another embodiment of the present invention.

[0041] Figure 10 is a cross-sectional view of a camera module according to another embodiment of the present invention.

[0042] Figure 11 is a cross-sectional view of Figure 10 from a different angle.

[0043] FIG. 12 is a cross-sectional view of a camera module according to another embodiment of the present invention.

[0044] Figure 13 is an enlarged view of the P area and Q area of ​​Figure 12.

[0045] Fig. 14 is an exploded perspective view of a camera device according to the present embodiment.

[0046] Figure 15 is a perspective view of a base according to another embodiment of the present invention.

[0047] Fig. 16 is a perspective view of an AF carrier according to another embodiment of the present invention.

[0048] Figure 17 is a perspective view of Figure 15 from a different angle.

[0049] Fig. 18 is a cross-sectional view of a camera module according to another embodiment of the present invention.

[0050] Figure 19 is an enlarged view of the R area and S area of ​​Figure 18.

[0051] Fig. 20 is an exploded perspective view of a camera device according to the present embodiment.

[0052] Fig. 21 is a perspective view of a mobile terminal to which a camera module according to the present embodiment is applied.

[0053] Fig. 22 is a perspective view of a mobile terminal to which a camera module is applied according to another embodiment of the present invention.

[0054] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

[0055] However, the technical idea of ​​the present invention is not limited to some of the embodiments described, but can be implemented in various different forms, and within the scope of the technical idea of ​​the present invention, one or more of the components between the embodiments can be selectively combined or substituted for use.

[0056] In addition, terms (including technical and scientific terms) used in this embodiment may be interpreted as having a meaning that can be generally understood by a person of ordinary skill in the technical field to which this embodiment belongs, unless explicitly and specifically defined and described, and terms that are commonly used, such as terms defined in a dictionary, may be interpreted in consideration of the contextual meaning of the relevant technology.

[0057] Additionally, the terms used in this embodiment are for the purpose of describing the embodiments and are not intended to limit the present invention.

[0058] In this specification, the singular may also include the plural unless specifically stated otherwise in the phrase, and when it is described as “A and / or at least one (or more) of B, C”, it may include one or more of all combinations that can be combined with A, B, C.

[0059] Additionally, in describing the components of this embodiment, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only intended to distinguish the components from other components, and are not intended to limit the nature, order, or sequence of the components.

[0060] And, when a component is described as being 'connected', 'coupled', or 'connected' to another component, it may include not only cases where the component is 'connected', 'coupled', or 'connected' directly to the other component, but also cases where the component is 'connected', 'coupled', or 'connected' by another component between the component and the other component.

[0061] Additionally, when described as being formed or arranged "above" or "below" each component, "above" or "below" includes not only cases where the two components are in direct contact with each other, but also cases where one or more other components are formed or arranged between the two components. Furthermore, when expressed as "above" or "below," the meaning may include not only the upward direction but also the downward direction based on one component.

[0062] The 'optical axis direction' used below is defined as the optical axis direction of the lens and / or image sensor coupled to the lens driving device.

[0063] The 'vertical direction' used below may be a direction parallel to or the same direction as the optical axis direction. The vertical direction may correspond to the 'z-axis direction'. The 'horizontal direction' used below may be a direction perpendicular to the vertical direction. That is, the horizontal direction may be a direction perpendicular to the optical axis. Therefore, the horizontal direction may include the 'x-axis direction' and the 'y-axis direction'.

[0064] The 'auto focus (AF) function' used below is defined as a function that automatically focuses on a subject by adjusting the distance from the image sensor by moving the lens in the optical axis direction according to the distance of the subject so that a clear image of the subject can be obtained on the image sensor. In addition, 'closed-loop auto focus (CLAF) control' is defined as a function that detects the distance between the image sensor and the lens and provides feedback control of the position of the lens in real time to improve the accuracy of focus adjustment.

[0065] The term "optical image stabilization (OIS) function" used below is defined as a function that moves or tilts the lens in a direction perpendicular to the optical axis to compensate for hand shake in order to prevent images or videos from shaking due to the user's hand shake. In addition, "closed-loop auto focus (CLAF) control" is defined as a function that detects the position of the lens with respect to the image sensor and provides real-time feedback control of the lens position to improve the accuracy of hand shake correction.

[0066] Hereinafter, either the “AF moving part” or the “OIS moving part” may be referred to as the “first moving part” and the other may be referred to as the “second moving part.”

[0067] Hereinafter, either the “AF drive unit” or the “OIS drive unit” may be referred to as the “first drive unit” and the other may be referred to as the “second drive unit.”

[0068] Hereinafter, one of the “AF drive unit”, “OIS-x drive unit” and “OIS-y drive unit” may be referred to as the “first drive unit”, the other may be referred to as the “second drive unit” and the other may be referred to as the “third drive unit”.

[0069] Hereinafter, one of the “AF magnet (410)”, the “OIS-x magnet (510)”, and the “OIS-y magnet (610)” may be referred to as the “first magnet”, the other may be referred to as the “second magnet”, and the other may be referred to as the “third magnet”.

[0070] Hereinafter, one of the “AF coil (420)”, the “OIS-x coil (520)”, and the “OIS-y coil (620)” may be referred to as the “first coil”, the other may be referred to as the “second coil”, and the other may be referred to as the “third coil”.

[0071] Hereinafter, one of the “AF magnet (410)”, the “OIS-x magnet (510)”, the “OIS-y magnet (610)”, the “AF coil (420)”, the “OIS-x coil (520)” and the “OIS-y coil (620)” may be referred to as the “first drive unit”, another may be referred to as the “second drive unit”, another may be referred to as the “third drive unit”, another may be referred to as the “fourth drive unit”, another may be referred to as the “fifth drive unit” and another may be referred to as the “sixth drive unit”.

[0072] Hereinafter, one of the “AF sensor (430)”, the “OIS-x sensor (530)”, and the “OIS-y sensor (630)” may be referred to as the “first sensor”, the other may be referred to as the “second sensor”, and the other may be referred to as the “third sensor”.

[0073]

[0074] FIG. 1 is a perspective view of a camera module according to the present embodiment, FIG. 2 is an exploded perspective view of a camera module according to the present embodiment, FIG. 3 is a perspective view of a base according to the present embodiment, FIG. 4 is a perspective view of an AF carrier according to the present embodiment, FIG. 5 is a cross-sectional view taken along line A-A' of FIG. 1, FIG. 6 is a drawing for explaining a magnetic levitation operation according to another embodiment of the present invention, FIG. 7 is a cross-sectional view of a camera module according to the present embodiment, FIG. 8 is an enlarged view of areas A and B of FIG. 7, FIG. 9 is a cross-sectional view of a camera module according to another embodiment of the present invention, FIG. 10 is a cross-sectional view of a camera module according to another embodiment of the present invention, FIG. 11 is a cross-sectional view of FIG. 10 from another angle, FIG. 12 is a cross-sectional view of a camera module according to another embodiment of the present invention, FIG. 13 is an enlarged view of areas P and Q of FIG. 12, FIG. 15 is a perspective view of a base according to another embodiment of the present invention, and FIG. 16 is a cross-sectional view of a base according to another embodiment of the present invention. FIG. 17 is a perspective view of the AF carrier according to FIG. 15 from a different angle, FIG. 18 is a cross-sectional view of a camera module according to another embodiment of the present invention, and FIG. 19 is an enlarged view of the R area and the S area of ​​FIG. 18.

[0075]

[0076] The lens driving device (10) may be a voice coil motor (VCM). The lens driving device (10) may be a lens driving motor. The lens driving device (10) may be a lens driving actuator. The lens driving device (10) may include an AF module. The lens driving device (10) may include an OIS module.

[0077] The lens driving device (10) may include a fixed portion. The fixed portion may be a portion that is relatively fixed when the moving portion moves. The moving portion may move relative to the fixed portion.

[0078] The lens driving device (10) may include a base (110). The fixing part may include the base (110). The base (110) may be placed under the AF carrier (210). The base (110) may be placed under the OIS carrier (310). The base (110) may be coupled to the cover (130). The AF carrier (210) and the OIS carrier (310) may be placed on the base (110). The AF carrier (210) and the OIS carrier (310) may be placed on the lower part of the base (110). The AF carrier (210) and the OIS carrier (310) may be placed inside the base (110).

[0079] The base (110) may include a lower plate. The lower plate of the base (110) may support the lower surface of the AF moving part. The lower plate of the base (110) may support the lower surface of the AF carrier (210).

[0080] The base (110) may include side plates extending upward from the lower portion. The base (110) may include four side plates. The four side plates may include a first side plate and a third side plate arranged opposite each other, and a second side plate and a fourth side plate arranged opposite each other. The side plates of the base (110) may include holes (111-113). Each of the side plates of the base (110) may have one hole formed therein. The holes (111-113) of the base (110) may be formed to correspond to the shape of the coil. The inner surface of the holes (111-113) of the base (110) may face the outer surface of the coil. A coil placed on a substrate (120) that is arranged to surround the side plate of the base (110) through holes (111-113) formed in the side plate of the base (110) can face the internal space of the base (110).

[0081] The side plate of the base (110) may include first to third holes (111-113). The side plate on which the first hole (111) is arranged and the side plate on which the second hole (112) is arranged may face each other. The side plate on which the first hole (111) is arranged and the side plate on which the second hole (112) is arranged may be arranged vertically. The side plate on which the first hole (111) is arranged and the side plate on which the third hole (113) is arranged may be arranged vertically.

[0082] The AF coil (420) placed on the substrate (120) through the first hole (111) can be exposed in the inner direction of the base (110). The OIS-x coil (520) placed on the substrate (120) through the second hole (112) can be exposed in the inner direction of the base (110). The OIS-y coil (620) placed on the substrate (120) through the third hole (113) can be exposed in the inner direction of the base (110).

[0083] The base (110) may include a step (114). The step (114) may be formed at the lower end of the outer surface of the base (110). The step (114) may protrude from the outer surface of the base (110). A side plate of the cover (130) may be placed on the step (114) of the base (110). A substrate (120) may be placed on the step (114) of the base (110).

[0084] The lens driving device (10) may include a substrate (120). The substrate (120) may include a flexible printed circuit board (FPCB). The substrate (120) may be electrically connected to coils (420, 520, 620). The substrate (120) may be electrically connected to sensors (430, 530, 630).

[0085] The substrate (120) may be placed on the base (110). The substrate (120) may include a flexible substrate. The substrate (120) may include a flexible printed circuit board (FPCB). The substrate (120) may include an elastic portion.

[0086] The substrate (120) may include four substrates arranged on four sides of the base (110). The four substrates may be formed to surround the sides of the base (110). The four substrates may include a first substrate and a third substrate arranged opposite each other, and a second substrate and a fourth substrate arranged opposite each other. At least one of the four substrates may include a terminal portion. The four substrates may include two terminal portions. The two terminal portions may be arranged opposite each other with respect to the optical axis. The terminal portion may include a terminal.

[0087] The substrate (120) may include a terminal. The terminal may be positioned at the lower end of the base (110). The terminal may be coupled to a printed circuit board (50). The terminal may be coupled to a terminal of the printed circuit board (50) via solder. The terminal may be coupled to a terminal of the printed circuit board (50) via a conductive member. The terminal may be connected to a terminal of the printed circuit board (50). The terminal may be electrically connected to a terminal of the printed circuit board (50).

[0088] The lens driving device (10) may include a cover (130). The fixing part may include the cover (130). The cover (130) may be placed on the base (110). The cover (130) may be placed on the base (110). The cover (130) may be coupled to the base (110). The cover (130) may be fixed to the base (110). The cover (130) may accommodate an AF carrier (210) therein. The cover (130) may accommodate an OIS carrier (310) therein. The cover (130) may be a shield member. The cover (130) may be a shield can.

[0089] The cover (130) may include a top plate. The top plate may be positioned on a movable part. The upward movement of the movable part may be limited by the movable part contacting the top plate. The top plate may include a hole through which light passes.

[0090] The cover (130) may include a side plate. The side plate may extend from the top plate. The side plate may be disposed on the base (110). The side plate may be disposed on a stepped portion protruding from the lower portion of the outer surface of the base (110). The side plate may include a plurality of side plates. The side plate may include four side plates. The side plates may include a first side plate and a third side plate disposed opposite each other, and a second side plate and a fourth side plate disposed opposite each other.

[0091] The lens driving device (10) may include a moving part. The moving part may be placed on the fixed part. The moving part may be placed within the fixed part. The moving part may be movably placed on the fixed part. The moving part may be moved relative to the fixed part by the driving part. The moving part may be moved during AF operation. The moving part may be moved during OIS operation. A lens may be coupled to the moving part.

[0092] The lens driving device (10) may include an AF moving unit. The AF moving unit may be disposed on the fixed unit. The AF moving unit may be disposed within the fixed unit. The AF moving unit may be disposed on the fixed unit. The AF moving unit may be disposed between the fixed unit and the OIS moving unit. The AF moving unit may be movably disposed on the fixed unit. The AF moving unit may move in the optical axis direction with respect to the fixed unit by the AF driving unit. The AF moving unit may move during AF driving.

[0093] In a variant example, the AF moving unit and the AF drive unit may be omitted. That is, the OIS moving unit may be placed on the fixed unit. Alternatively, the OIS moving unit may be placed on the fixed unit and the AF moving unit may be placed within the OIS moving unit.

[0094] The lens driving device (10) may include an AF carrier (210). The AF moving unit may include the AF carrier (210). The AF carrier (210) may be an 'AF holder'. The AF carrier (210) may be a 'housing'. The AF carrier (210) may be placed within the base (110). The AF carrier (210) may be placed on the base (110). The AF carrier (210) may be placed within the cover (130). The AF carrier (210) may be placed between the base (110) and the OIS carrier (310). The AF carrier (210) may be placed to be movable in the optical axis direction.

[0095] The AF carrier (210) may include a lower plate. The lower plate may be placed on the base (110). The lower plate may be placed between the OIS carrier (310) and the lower plate of the base (110).

[0096] The AF carrier (210) may include a side wall. The side wall may extend upward from the lower plate. A substrate (120) may be disposed on the side wall. An AF coil (420) may be disposed on the side wall. An OIS-x coil (520) may be disposed on the side wall. An OIS-y coil (620) may be disposed on the side wall. The side wall may include a groove for avoiding the coil. An AF magnet (410) may be disposed on the side wall. An OIS-x magnet (510) may be disposed on the side wall. An OIS-y magnet (610) may be disposed on the side wall.

[0097] The side wall may include a plurality of side walls. The side wall may include four side walls. The side wall may include a first side wall and a second side wall that are disposed opposite each other, and a third side wall and a fourth side wall that are disposed opposite each other. The AF carrier (210) may include a pillar portion instead of a side wall. One of the AF coil (420), the OIS-x coil (520), and the OIS-y coil (620) may be disposed between two adjacent pillars. One of the AF magnet (410), the OIS-x magnet (510), and the OIS-y magnet (610) may be disposed between two adjacent pillars.

[0098] The AF carrier (210) may include a hole. The hole may be formed in the side wall of the AF carrier (210). The hole may be open to the inside. The hole may be formed as a groove. The hole may be replaced with a groove.

[0099] The lens driving device (10) may include an OIS moving unit. The OIS moving unit may be disposed on a fixed unit. The OIS moving unit may be disposed within the fixed unit. The OIS moving unit may be disposed on the fixed unit. The OIS moving unit may be disposed within the AF moving unit. The OIS moving unit may be disposed to be movable. The OIS moving unit may move in a direction perpendicular to the optical axis with respect to the fixed unit and the AF moving unit by the OIS driving unit. The OIS moving unit may move in the x-axis direction by the OIS-x driving unit. The OIS moving unit may move in the y-axis direction by the OIS-y driving unit. The OIS moving unit may move when the OIS is driven.

[0100] The lens driving device (10) may include an OIS carrier (310). The OIS moving unit may include the OIS carrier (310). The OIS carrier (310) may be an 'OIS holder'. The OIS carrier (310) may be a 'bobbin'. The OIS carrier (310) may be placed inside the AF carrier (210). The OIS carrier (310) may be placed inside the base (110). The OIS carrier (310) may be placed on the base (110). The OIS carrier (310) may be placed inside the cover (130). The OIS carrier (310) may be placed so as to be movable in a direction perpendicular to the optical axis.

[0101] The OIS carrier (310) may include an outer side. The OIS carrier (310) may include a plurality of side surfaces. The OIS carrier (310) may include a first side and a third side which are disposed opposite to each other, and a second side and a fourth side which are disposed opposite to each other. A magnet may be disposed on at least one of the plurality of side surfaces of the OIS carrier (310). An OIS-x magnet (510) and an OIS-y magnet (610) may be disposed on the side surfaces of the OIS carrier (310). The AF magnet (410) may be disposed on the first side of the OIS carrier (310). The OIS-x magnet (510) may be disposed on the second side of the OIS carrier (310). The OIS-y magnet (610) may be disposed on the third side of the OIS carrier (310).

[0102]

[0103] The lens driving device (10) may include a driving unit. The driving unit may move the moving unit relative to the fixed unit. The driving unit may include an AF driving unit. The driving unit may include an OIS driving unit. The driving unit may include an OIS-x driving unit. The driving unit may include an OIS-y driving unit. The driving unit may include a coil and a magnet.

[0104] The lens driving device (10) may include an AF driving unit. The AF driving unit may move the AF moving unit in the optical axis direction. The AF driving unit may move the AF carrier (210) in the optical axis direction. The AF driving unit may move the AF carrier (210) in the optical axis direction through electromagnetic force. The AF driving unit may include a coil and a magnet.

[0105] In this embodiment, the AF carrier (210) and the OIS carrier (310) can move in the optical axis direction by the interaction between the AF coil (420) and the AF magnet (410). The AF coil (420), the AF carrier (210), and the OIS carrier (310) can move in the optical axis direction as one unit.

[0106] The lens driving device (10) may include an AF magnet (410). The AF driving unit may include an AF magnet (410). The AF magnet (410) may be an 'AF magnet'. The AF magnet (410) may be a permanent magnet. The AF magnet (410) may be disposed on a fixing member. The AF magnet (410) may be disposed on the base (110). The AF magnet (410) may be disposed on the cover (130). The AF magnet (410) may be disposed on a side plate of the cover (130). The AF magnet (410) may be disposed on an outer surface of the base (110). The AF magnet (410) may be disposed on an inner surface of the base (110). The AF magnet (410) may be fixed to the base (110). The AF magnet (410) can be coupled to the base (110). The AF magnet (410) can be bonded to the base (110) with an adhesive. The AF magnet (410) can be placed inside the cover (130). The AF magnet (410) can interact with the AF coil (420). The AF magnet (410) can electromagnetically interact with the AF coil (420). The AF magnet (410) can be placed at a position corresponding to the AF coil (420). The AF magnet (410) can face the AF coil (420). The AF magnet (410) can overlap the AF coil (420) in a direction perpendicular to the optical axis.

[0107] The lens driving device (10) may include an AF coil (420). The AF driving unit may include the AF coil (420). The AF coil (420) may interact with the AF magnet (410). The AF coil (420) may face the AF magnet (410). The AF coil (420) may be positioned at a position corresponding to the AF magnet (410). The AF coil (420) may overlap the AF magnet (410) in a direction perpendicular to the optical axis. The AF coil (420) may be positioned on the AF carrier (210). The AF coil (420) may be positioned on the AF moving unit.

[0108] In this embodiment, the AF coil (420) can move in the optical axis direction. The AF coil (420) can move in the optical axis direction through interaction with the AF magnet (410). The AF coil (420) can move together with the AF moving unit. The AF coil (420) can move in the optical axis direction together with the AF moving unit. During the AF driving process, the AF coil (420) can move in the optical axis direction together with the AF moving unit. The AF coil (420) can be placed in the AF moving unit. The AF coil (420) can be fixed to the AF moving unit. The AF coil (420) can be coupled to the AF moving unit.

[0109] The lens driving device (10) may include an AF sensor (430). The AF driving unit may include an AF sensor (430). The AF sensor (430) may be a Hall sensor. The AF sensor (430) may be arranged on an inner substrate. The AF sensor (430) may detect the AF magnet (410). The AF sensor (430) may detect the movement of the AF magnet (410). The movement amount or position of the AF magnet (410) detected by the AF sensor (430) may be used for feedback of auto focus driving.

[0110] The AF sensor (430) may be a driver IC. The driver IC may include a sensing unit. The sensing unit may include a Hall element (Hall IC). The driver IC may be electrically connected to the AF coil (420). The driver IC may supply current to the AF coil (420).

[0111] The AF sensor (430) may be positioned within the AF coil (420). The AF sensor (430) may overlap the AF magnet (410) in a direction perpendicular to the optical axis. Alternatively, the AF sensor (430) may be positioned on the outside of the AF coil (420). The AF sensor (430) may overlap the AF coil (420) in the direction of the optical axis. The AF sensor (430) may overlap the AF coil (420) in a direction perpendicular to the optical axis.

[0112] The lens driving device (10) may include an AF yoke (160). The AF yoke (160) may be positioned corresponding to the AF magnet (410). An attractive force may be applied between the AF yoke (160) and the AF magnet (410). The AF yoke may be positioned on the outside of the substrate (120) on which the AF coil (420) is positioned.

[0113] The lens driving device (10) may include an OIS driving unit. The OIS driving unit may move the OIS moving unit in a direction perpendicular to the optical axis. The OIS driving unit may move the OIS carrier (310) in a direction perpendicular to the optical axis. The OIS driving unit may move the OIS carrier (310) in a direction perpendicular to the optical axis through electromagnetic force.

[0114] The lens driving device (10) may include an OIS-x driving unit. The OIS driving unit may include an OIS-x driving unit. The OIS-x driving unit may move the OIS carrier (310) in the x-axis direction perpendicular to the optical axis. The OIS-x driving unit may move the OIS carrier (310) in the x-axis direction perpendicular to the optical axis through electromagnetic force. The OIS-x driving unit may include a coil and a magnet.

[0115] In this embodiment, the OIS-x magnet (510) and the OIS-x coil (520) can move the OIS moving part in a first direction perpendicular to the optical axis direction. At this time, the first direction may be the x-axis direction. The OIS carrier (310) can move in the x-axis direction perpendicular to the optical axis direction by the interaction between the OIS-x coil (520) and the OIS-x magnet (510). The OIS-x magnet (510) and the OIS carrier (310) can move in the x-axis direction as one unit.

[0116] The lens driving device (10) may include an OIS-x magnet (510). The OIS driving unit may include an OIS-x magnet (510). The OIS-x magnet (510) may be an 'OIS-x magnet'. The OIS-x magnet (510) may be a permanent magnet. The OIS-x magnet (510) may be arranged in the OIS moving unit. The OIS-x magnet (510) may be spaced apart from the AF magnet (410). The OIS-x magnet (510) may be arranged in the OIS carrier (310). The OIS-x magnet (510) may be arranged on the outer surface of the OIS carrier (310). The OIS-x magnet (510) may be fixed to the OIS carrier (310). The OIS-x magnet (510) can be coupled to the OIS carrier (310). The OIS-x magnet (510) can be adhesively bonded to the OIS carrier (310). The OIS-x magnet (510) can be placed inside the cover (130). The OIS-x magnet (510) can interact with the OIS-x coil (520). The OIS-x magnet (510) can electromagnetically interact with the OIS-x coil (520). The OIS-x magnet (510) can be placed at a position corresponding to the OIS-x coil (520). The OIS-x magnet (510) can face the OIS-x coil (520). The OIS-x magnet (510) can face the OIS-x coil (520). The OIS-x magnet (510) can overlap with the OIS-x coil (520) in a direction perpendicular to the optical axis. The OIS-x magnet (510) can overlap with the OIS-x coil (520) in the x-axis direction. The OIS-x magnet (510) can move in the x-axis direction perpendicular to the optical axis.

[0117] The lens driving device (10) may include an OIS-x coil (520). The OIS driving unit may include the OIS-x coil (520). The OIS-x coil (520) may interact with the OIS-x magnet (510). The OIS-x coil (520) may move the OIS-x magnet (510) in the x-axis direction perpendicular to the optical axis. The OIS-x coil (520) may move the OIS-x magnet (510) in the x-axis direction through interaction with the OIS-x magnet (510). The OIS-x coil (520) may face the OIS-x magnet (510). The OIS-x coil (520) may face the OIS-x magnet (510). The OIS-x coil (520) may be positioned corresponding to the OIS-x magnet (510). The OIS-x coil (520) may overlap the OIS-x magnet (510) in a direction perpendicular to the optical axis. The OIS-x coil (520) may be positioned on the AF carrier (210).

[0118] In this embodiment, the OIS-x coil (520) can move together with the AF moving unit. The OIS-x coil (520) can move in the optical axis direction together with the AF moving unit. During the AF driving process, the OIS-x coil (520) can move in the optical axis direction together with the AF moving unit. The OIS-x coil (520) can be placed in the AF moving unit. The OIS-x coil (520) can be fixed to the AF moving unit. The OIS-x coil (520) can be coupled to the AF moving unit.

[0119] The lens driving device (10) may include an OIS-x sensor (530). The OIS driving unit may include an OIS-x sensor (530). The OIS-x sensor (530) may include a Hall sensor. The OIS-x sensor (530) may detect an OIS-x magnet (510). The OIS-x sensor (530) may detect the magnetic force of the OIS-x magnet (510). The OIS-x sensor (530) may be disposed above the OIS-x magnet (510). The OIS-x sensor (530) may overlap with the OIS-x magnet (510) in the optical axis direction. Alternatively, the OIS-x sensor (530) may be disposed within the OIS-x coil (520). The OIS-x sensor (530) may overlap with the OIS-x coil (520) in the optical axis direction. The OIS-x sensor (530) may overlap with the OIS-x coil (520) in a direction perpendicular to the optical axis. The OIS-x sensor (530) may face the OIS-x magnet (510). The OIS-x sensor (530) may be positioned at a position corresponding to the OIS-x magnet (510). The OIS-x sensor (530) may detect the movement of the OIS-x magnet (510). The movement amount or position of the OIS-x magnet (510) detected by the OIS-x sensor (530) may be used for feedback of the shake correction drive in the x-axis direction.

[0120] The lens driving device (10) may include an OIS-x yoke. The OIS-x yoke may be placed on an OIS-x magnet (510). The OIS-x yoke may be placed between the OIS-x magnet (510) and the OIS carrier (310). The OIS-x yoke may prevent magnetic flux leakage of the OIS-x magnet (510) and thereby improve interaction with the OIS-x coil (520).

[0121] When viewed from above, the AF magnet (410), the AF coil (420), the OIS-y magnet (610), and the OIS-y coil (620) can be arranged in order on an imaginary straight line. When viewed from the top, the AF magnet (410), the AF coil (420), the OIS-y magnet (610), and the OIS-y coil (620) can be arranged in order on an imaginary straight line. When viewed from above, the AF magnet (410), the AF coil (420), the OIS-y magnet (610), and the OIS-y coil (620) can be arranged in order. When viewed from above, the AF magnet (410), the AF coil (420), the OIS-y magnet (610), and the OIS-y coil (620) can be arranged in order in the y-axis direction. When viewed from above, the AF magnet (410), the AF coil (420), the OIS-y magnet (610), and the OIS-y coil (620) can overlap in the y-axis direction.

[0122] The lens driving device (10) may include a guide member (not shown). The guide member may include a ball. The guide member may include a pin. The guide member may include a cylindrical member. The guide member may guide the movement of the moving member relative to the fixed member in a specific direction.

[0123] The lens driving device (10) may include an AF guide ball (not shown). The AF guide ball may include a plurality of ball bearings arranged along the optical axis direction. The AF guide ball may guide the movement of the AF moving unit with respect to the fixed unit in the optical axis direction. The AF guide ball may guide the movement of the AF carrier (210) with respect to the base (110) in the optical axis direction. The AF guide ball may be arranged between the fixed unit and the AF moving unit. The AF guide ball may be arranged between the base (110) and the AF carrier (210). The AF guide ball may be arranged between the base (110) and the AF carrier (210) in the x direction. Alternatively, the AF guide ball may be arranged between the base (110) and the AF carrier (210) in the y direction. The base (110) may include a side wall extending upward from the lower plate. An inwardly recessed groove may be formed in the side wall of the base (110) so that the AF guide ball is arranged. The AF guide ball may be placed in the groove of the base (110). The AF guide ball may be placed in the groove of the AF carrier (210). The AF guide ball may be spherical. The AF guide ball may be formed of metal. Grease may be applied to the surface of the AF guide ball.

[0124] The lens driving device (10) may include an OIS guide member. The OIS guide member may be a guide member. The OIS guide member may be a guide portion. The OIS guide member may be a guide plate. The OIS guide member may be a guide plate. The OIS guide member may have a guide structure.

[0125] The OIS guide member can guide the movement of the OIS carrier (310) relative to the AF carrier (210) in a direction perpendicular to the optical axis. The OIS guide member can be arranged between the AF moving unit and the OIS moving unit. The OIS guide member can be arranged between the AF carrier (210) and the OIS carrier (310). The OIS guide member can be arranged between the AF carrier (210) and the OIS carrier (310) in the optical axis direction. The OIS guide member can be referred to as a moving member. An OIS ball bearing unit (710) can be arranged between the AF carrier (210) and the OIS guide member. An OIS ball bearing unit (710) can be arranged between the OIS carrier (310) and the OIS guide member. The carrier (310) can have an inwardly recessed groove formed at a lower corner portion so that the OIS ball bearing unit (710) is arranged. The AF carrier (210) may have a groove formed inwardly on the lower plate so that the OIS ball bearing part (710) is placed therein.

[0126] The lens driving device (10) may include an elastic member (150). The elastic member may be formed to support OIS driving. The elastic member may support movement of the OIS moving part. The elastic member may be formed to pressurize the OIS guide member. The elastic member may be formed to guide both the OIS-x-axis driving and the OIS-y-axis driving with only the OIS guide member. The elastic member may include a plate spring. The elastic member may include a wire. The elastic member may have elasticity. The elastic member may be formed of metal.

[0127] The elastic member can press the OIS guide member toward the AF moving part. The elastic member can press the OIS moving part toward the AF moving part. At this time, the elastic member can include an upper elastic member, a lower elastic member, and a wire.

[0128]

[0129] Referring to FIG. 3, the side wall of the base (110) may include a groove formed symmetrically with respect to the first hole (111). A second guide magnet portion (Mb) may be symmetrically arranged on the side wall of the base (110) with respect to the first hole (111). The second guide magnet portion (Mb) may include a second guide magnet (M2) and a fourth guide magnet (M4). The length (Lb) of the second guide magnet portion (Mb) in the optical axis direction may be formed to be greater than the length (La) of the first guide magnet portion (Ma) in the optical axis direction.

[0130] Referring to FIG. 4, the side wall of the AF carrier (210) may include a groove formed symmetrically with respect to the AF magnet (410). A first guide magnet portion (Ma) may be symmetrically arranged on the side wall of the AF carrier (210) with respect to the AF magnet (410). The first guide magnet portion (Ma) may include a first guide magnet (M1) and a third guide magnet (M3).

[0131] The first guide magnet portion (Ma) and the second guide magnet portion (Mb) may be arranged to face each other. The first guide magnet portion (Ma) may overlap the second guide magnet portion (Mb) in a direction perpendicular to the optical axis. The first guide magnet (M1) may be arranged to face the second guide magnet (M2). The third guide magnet (M3) may be arranged to face the fourth guide magnet (M4). The length of the first guide magnet (M1) in the optical axis direction may be shorter than the length of the second guide magnet (M2) in the optical axis direction. The length of the third guide magnet (M3) in the optical axis direction may be shorter than the length of the fourth guide magnet (M4) in the optical axis direction.

[0132] Referring to FIGS. 7 and 8, a first surface (115) on which a first hole (111) is formed in the side wall of the base (110) and a surface on which a second guide magnet portion (Mb) is arranged may have a step. The second surface (116a) on which the second guide magnet (M2) is arranged may protrude inwardly from the first surface (115). The third surface (116b) on which the fourth guide magnet (M4) is arranged may protrude inwardly from the first surface (115). The side wall of the base (110) may include a first step surface (117a) connecting the first surface (115) and the second surface (116a) and a second step surface (117b) connecting the first surface (115) and the third surface (116b).

[0133] A step may be formed between the fourth surface (211) on which the AF magnet (410) is disposed and the surface on which the first guide magnet portion (Ma) is disposed on the side wall of the AF carrier (210). The fifth surface (212a) on which the first guide magnet (M1) is disposed may be recessed inwardly relative to the fourth surface (211). The sixth surface (212b) on which the third guide magnet (M3) is disposed may be recessed inwardly relative to the fourth surface (211). The side wall of the AF carrier (210) may include a third step surface (213a) connecting the fourth surface (211) and the fifth surface (212a) and a fourth step surface (213b) connecting the fourth surface (211) and the sixth surface (212b).

[0134] The first surface (115) of the base (110) and the fourth surface (211) of the AF carrier (210) may be arranged to face each other. The second surface (116a) of the base (110) and the fifth surface (212a) of the AF carrier (210) may be arranged to face each other. The third surface (116b) of the base (110) and the sixth surface (212b) of the AF carrier (210) may be arranged to face each other. The first step surface (117a) of the base (110) may be arranged to face the third step surface (213a) of the AF carrier (210). The second step surface (117b) of the base (110) may be arranged to face the fourth step surface (213b) of the AF carrier (210). The first to third surfaces (115, 116a, 116b), the first and second step surfaces (117a, 117b) of the base (110) and the fourth to sixth surfaces (211, 212a, 212b), the third and fourth step surfaces (213a, 213b) of the AF carrier can be arranged spaced apart in a direction perpendicular to the optical axis.

[0135] The inner side of the side wall of the base (110) and the outer side of the side wall of the AF carrier (210) can prevent excessive tilting through a structure in which they are interlocked with each other. In addition, a space for tilting during AF correction and OIS correction can be secured through a gap formed between the inner side of the side wall of the base (110) and the inner side of the side wall of the AF carrier (210).

[0136]

[0137] Referring to Fig. 5, the first guide magnet portion (Ma) and the second guide magnet portion (Mb) may have the same polarity. A mutual repulsive force may act between the first guide magnet portion (Ma) and the second guide magnet portion (Mb). While the AF carrier (210) moves at the maximum stroke, the first guide magnet portion (Ma) may overlap the second guide magnet portion (Mb) in a direction perpendicular to the optical axis. While the AF carrier (210) moves at the maximum stroke, the first guide magnet portion (Ma) may face the second guide magnet portion (Mb).

[0138] When the AF carrier (210) moves in the direction of the optical axis, the tilting of the AF carrier (210) can be prevented and the stroke movement can be guided through the magnetic levitation effect. In addition, the second guide magnet part (Mb) functions as a guide rail, and can reduce the dynamic tilt effect due to the squareness and flatness during injection of the actuator, and since a ball is not used, dents due to impact may not occur.

[0139]

[0140] According to a variation, at least one of the first guide magnet portion (Ma) and the second guide magnet portion (Mb) may be an electromagnet. The electromagnet can generate a magnetic force only while electricity is applied. A configuration to which electricity is applied may be connected to at least one of the first guide magnet portion (Ma) and the second guide magnet portion (Mb). When electricity is applied to the first guide magnet portion (Ma) and the second guide magnet portion (Mb) to make them magnetized, the first guide magnet portion (Ma) and the second guide magnet portion (Mb) may have the same polarity.

[0141] For example, if the first guide magnet part (Ma) is a magnet having an N pole, it can have an N pole magnetism only when electricity is connected to the second guide magnet part (Mb). If the second guide magnet part (Mb) is a magnet having an N pole, it can have an N pole magnetism only when electricity is connected to the first guide magnet part (Ma). Alternatively, the first guide magnet part (Ma) and the second guide magnet part (Mb) can have the same polarity only when electricity is connected.

[0142] A mutual repulsive force may be applied between the first guide magnet portion (Ma) and the second guide magnet portion (Mb). While the AF carrier (210) moves at its maximum stroke, the first guide magnet portion (Ma) may overlap the second guide magnet portion (Mb) in a direction perpendicular to the optical axis. While the AF carrier (210) moves at its maximum stroke, the first guide magnet portion (Ma) may face the second guide magnet portion (Mb).

[0143] When the AF carrier (210) moves in the direction of the optical axis, the tilting of the AF carrier (210) can be prevented and the stroke movement can be guided through the magnetic levitation effect. In addition, the second guide magnet part (Mb) functions as a guide rail, and can reduce the dynamic tilt effect due to the squareness and flatness during injection of the actuator, and since a ball is not used, dents due to impact may not occur.

[0144]

[0145] Referring to FIG. 6, according to another embodiment of the present invention, the first guide magnet part (Ma) and the second guide magnet part (Mb) can generate an AF driving force and increase the AF driving speed. The first guide magnet part (Ma) may have magnets with different polarities arranged alternately along the optical axis direction. For example, the first guide magnet part (Ma) may have magnets with S poles, N poles, S poles, and N poles arranged alternately along the optical axis direction. The second guide magnet part (Mb) may have magnets with different polarities arranged alternately along the optical axis direction. For example, the second guide magnet part (Mb) may have magnets with S poles and N poles arranged alternately along the optical axis direction.

[0146] A magnet having one polarity in the second guide magnet portion (Mb) may be arranged to face two magnets having different polarities in the first guide magnet portion (Ma). For example, a magnet having an S pole in the second guide magnet portion (Mb) may exert an attractive force on a magnet having an N pole in the first guide magnet portion (Ma), and may exert a repulsive force on a magnet having an S pole in the first guide magnet portion (Ma). That is, the first guide magnet portion (Ma) and the second guide magnet portion (Mb) may generate a driving force in one direction of the AF carrier (210).

[0147] Referring to FIG. 9, the first guide magnet portion (Ma) may further include a fifth guide magnet (M5) and a seventh guide magnet (M7) in addition to the first guide magnet (M1) and the third guide magnet (M3). The second guide magnet portion (Mb) may further include a sixth guide magnet (M6) and an eighth guide magnet (M8) in addition to the second guide magnet (M2) and the fourth guide magnet (M4). In the description of the fifth guide magnet (M5) and the seventh guide magnet (M7), any description that overlaps with the description of the first guide magnet portion (Ma) described above will be omitted. In the description of the sixth guide magnet (M6) and the eighth guide magnet (M8), any description that overlaps with the description of the second guide magnet portion (Mb) described above will be omitted.

[0148] The fifth guide magnet (M5) and the seventh guide magnet (M7) may be symmetrically arranged on the AF carrier (210) with respect to the OIS-x magnet (510). The sixth guide magnet (M6) and the eighth guide magnet (M8) may be symmetrically arranged on the base (110) with respect to the second hole (112) of the base (110). The fifth guide magnet (M5) may be arranged to face the sixth guide magnet (M6). The seventh guide magnet (M7) may be arranged to face the eighth guide magnet (M8). In a direction perpendicular to the optical axis, the first guide magnet (M1), the second guide magnet (M2), the fifth guide magnet (M5), and the sixth guide magnet (M6) may be arranged to overlap. The third guide magnet (M3), the fourth guide magnet (M4), the seventh guide magnet (M7), and the eighth guide magnet (M8) can be arranged to overlap in a direction perpendicular to the optical axis.

[0149] At least one set among the first guide magnet (M1) and the second guide magnet (M2), the third guide magnet (M3) and the fourth guide magnet (M4), the fifth guide magnet (M5) and the sixth guide magnet (M6), the seventh guide magnet (M7) and the eighth guide magnet (M8) can have the same polarity and can have a magnetic levitation effect. At least one set among the first guide magnet (M1) and the second guide magnet (M2), the third guide magnet (M3) and the fourth guide magnet (M4), the fifth guide magnet (M5) and the sixth guide magnet (M6), the seventh guide magnet (M7) and the eighth guide magnet (M8) includes a plurality of magnets having different polarities and can generate an AF driving force. For example, the first guide magnet (M1), the second guide magnet (M2), the seventh guide magnet (M7), and the eighth guide magnet (M8), which are arranged diagonally, may each have the same polarity and may have a magnetic levitation effect. In addition, the third guide magnet (M3), the fourth guide magnet (M4), the fifth guide magnet (M5), and the sixth guide magnet (M6) may include multiple magnets having different polarities and may generate an AF driving force. This is merely an example and is not particularly limited thereto.

[0150]

[0151] Referring to FIGS. 10 to 13, a guide coil portion (Ca) may be disposed at a position where a first guide magnet portion (Ma) is disposed on a side wall of a base (110). The guide coil portion (Ca) may be disposed to face a second guide magnet portion (Mb). The guide coil portion (Ca) may include a first guide coil (C1) and a second guide coil (C2) disposed on both sides of the AF coil (420). The first guide coil (C1) may face the first guide magnet (M1). The second guide coil (C2) may face the third guide magnet (M3).

[0152] The length of the guide coil unit (Ca) in the optical axis direction may be greater than the length of the second guide magnet unit (Mb) in the optical axis direction. The second guide magnet unit (Mb) may overlap the guide coil unit (Ca) in a direction perpendicular to the optical axis. When power is applied to the guide coil unit (Ca), the guide coil unit (Ca) and the second guide magnet unit (Mb) can drive the AF carrier (210) in one direction through electromagnetic interaction. Through the electromagnetic interaction between the guide coil unit (Ca) and the second guide magnet unit (Mb), the AF driving force can be reinforced in the AF driving unit, and the AF driving speed can be increased.

[0153]

[0154] Referring to FIG. 14, the duplicated contents described in FIG. 1 in the description of the camera module according to another embodiment of the present invention are omitted.

[0155] The side wall of the base (110) may include first protrusions (62a, 62b) that protrude symmetrically based on the first hole (111). The first protrusions (62a, 62b) may protrude inwardly from the inner surface of the side wall of the base (110). The first protrusions (62a, 62b) may protrude vertically from the side wall of the base (110) and then extend in the direction of the adjacent side wall. The first protrusions (62a, 62b) may be formed in an ‘ㄱ’ shape. A first space (61a, 61b) may be formed between the first protrusions (62a, 62b) and the side wall of the base (110). The length of the first protrusions (62a, 62b) in the optical axis direction may be shorter than the length of the side wall of the base (110) in the optical axis direction. The lower surface of the first protrusion (62a, 62b) can be spaced apart from the lower part of the base (110).

[0156] A groove may be formed on the surface of the first protrusion (62a, 62b) facing the side wall of the base (110). A second guide magnet portion (Mb: M2, M4) may be arranged on the surface of the first protrusion (62a, 62b) facing the side wall of the base (110). The second guide magnet portion (Mb) may be an electromagnet. The second guide magnet portion (Mb) may be arranged such that magnets having different polarities are arranged in a direction perpendicular to the optical axis.

[0157] The side wall of the AF carrier (210) may include second protrusions (52a, 52b) that are formed symmetrically with respect to the AF magnet (410). The second protrusions (52a, 52b) may protrude outward from the outer surface of the side wall of the AF carrier (210). The second protrusions (52a, 52b) may protrude vertically from the side wall of the AF carrier (210) and then extend toward the AF magnet (410). The second protrusions (52a, 52b) may be formed in an 'ㄱ' shape. A second space (51a, 51b) may be formed between the second protrusions (52a, 52b) and the side wall of the AF carrier (210). The length of the second protrusion (52a, 52b) in the optical axis direction may be smaller than the length of the side wall of the AF carrier (210) in the optical axis direction.

[0158] A groove may be formed on the surface of the second protrusion (52a, 52b) facing the side wall of the AF carrier (210). A first guide magnet portion (Ma: EM1, EM2) may be arranged on the surface of the second protrusion (52a, 52b) facing the side wall of the AF carrier (210). The first guide magnet portion (Ma) may be an electromagnet. The first guide magnet portion (Ma) may be arranged such that magnets having different polarities are arranged in a direction perpendicular to the optical axis.

[0159] The second protrusions (52a, 52b) of the AF carrier (210) may be arranged in the first space portion (61a, 61b) of the base (110). The inner surface of the first space portion (61a, 61b) of the base (110) may face the outer surface of the second protrusion portion (52a, 52b) of the AF carrier (210). The first protrusions (62a, 62b) of the base (110) may be arranged in the second space portion (51a, 51b) of the AF carrier (210). The inner surface (212a, 212b) of the second space portion (51a, 51b) of the AF carrier (210) may face the outer surface of the first protrusion portion (62a, 62b) of the base (110). The AF carrier (210) can be inserted and placed from the upper side to the lower side of the base (110). The structure in which the first protrusions (62a, 62b) of the base (110) and the second protrusions (52a, 52b) of the AF carrier (210) are interlocked can prevent the AF carrier from being detached in a direction perpendicular to the optical axis.

[0160] The first guide magnet portion (Ma) and the second guide magnet portion (Mb) may be arranged to face each other. The first guide magnet portion (Ma) and the second guide magnet portion (Mb) may be arranged to face each other with surfaces having different polarities. For example, an area having an N pole in the first guide magnet portion (Ma) may face an area having an S pole in the second guide magnet portion (Mb). An area having an S pole in the first guide magnet portion (Ma) may face an area having an N pole in the second guide magnet portion (Mb). When the first guide magnet portion (Ma) and the second guide magnet portion (Mb) are electromagnets, the surfaces facing each other may have different polarities when electricity is applied to the magnets. Through this, the first guide magnet part (Ma) and the second guide magnet part (Mb) can exert mutual suction force and have a magnetic levitation effect, thereby increasing the AF driving force.

[0161] According to another embodiment, the first guide magnet part (Ma) and the second guide magnet part (Mb) may be arranged so that their faces having the same polarity face each other. For example, an area having an N pole in the first guide magnet part (Ma) may face an area having an N pole in the second guide magnet part (Mb). An area having an S pole in the first guide magnet part (Ma) may face an area having an S pole in the second guide magnet part (Mb). When the first guide magnet part (Ma) and the second guide magnet part (Mb) are electromagnets, the faces facing each other may have the same polarity when electricity is applied to the magnets. Through this, the first guide magnet part (Ma) and the second guide magnet part (Mb) may exert a mutual repulsive force and may have a magnetic levitation effect, thereby guiding the moving part relative to the fixed part during AF operation.

[0162]

[0163] Below, a camera device according to the present embodiment is described with reference to the drawings.

[0164] Fig. 20 is an exploded perspective view of a camera device according to the present embodiment.

[0165] The camera device (10A) may include a camera module.

[0166] The camera device (10A) may include a lens module (20). The lens module (20) may include at least one lens. The lens may be positioned corresponding to the image sensor (60). The lens module (20) may include a lens and a barrel. The lens module (20) may be coupled to the OIS carrier (310) of the lens driving device (10). The lens module (20) may be coupled to the OIS carrier (310) by screw coupling and / or adhesive. The lens module (20) may move integrally with the OIS carrier (310).

[0167] The camera device (10A) may include a filter (30). The filter (30) may block light of a specific frequency band from passing through the lens module (20) from being incident on the image sensor (60). The filter (30) may be arranged parallel to the xy plane. The filter (30) may be arranged between the lens module (20) and the image sensor (60). The filter (30) may be arranged on the sensor base (40). Alternatively, the filter (30) may be arranged on the base (110). The filter (30) may include an infrared filter. The infrared filter may block light in the infrared region from being incident on the image sensor (60).

[0168] The camera device (10A) may include a sensor base (40). The sensor base (40) may be disposed between the lens driving device (10) and the printed circuit board (50). The sensor base (40) may include a protrusion (41) on which a filter (30) is disposed. An opening may be formed in a portion of the sensor base (40) on which the filter (30) is disposed so that light passing through the filter (30) may be incident on the image sensor (60). The adhesive member may couple or adhere the base (110) of the lens driving device (10) to the sensor base (40). The adhesive member may additionally serve to prevent foreign substances from entering the interior of the lens driving device (10). The adhesive member may include at least one of an epoxy, a thermosetting adhesive, and an ultraviolet-curable adhesive.

[0169] The camera device (10A) may include a printed circuit board (PCB) (50). The printed circuit board (50) may be a substrate or a circuit board. A lens driving device (10) may be disposed on the printed circuit board (50). A sensor base (40) may be disposed between the printed circuit board (50) and the lens driving device (10). The printed circuit board (50) may be electrically connected to the lens driving device (10). An image sensor (60) may be disposed on the printed circuit board (50). Various circuits, elements, control units, etc. may be provided on the printed circuit board (50) to convert an image formed on the image sensor (60) into an electrical signal and transmit it to an external device.

[0170] The camera device (10A) may include an image sensor (60). The image sensor (60) may be configured to form an image by incident light passing through a lens and a filter (30). The image sensor (60) may be mounted on a printed circuit board (50). The image sensor (60) may be electrically connected to the printed circuit board (50). For example, the image sensor (60) may be coupled to the printed circuit board (50) using surface mounting technology (SMT). As another example, the image sensor (60) may be coupled to the printed circuit board (50) using flip chip technology. The image sensor (60) may be arranged such that its optical axis is aligned with that of the lens. That is, the optical axis of the image sensor (60) and the optical axis of the lens may be aligned. The image sensor (60) can convert light irradiated onto the effective image area of ​​the image sensor (60) into an electrical signal. The image sensor (60) can be any one of a CCD (charge coupled device), a MOS (metal oxide semi-conductor), a CPD, and a CID.

[0171] The camera device (10A) may include a motion sensor (70). The motion sensor (70) may be mounted on a printed circuit board (50). The motion sensor (70) may be electrically connected to a control unit (80) through a circuit pattern provided on the printed circuit board (50). The motion sensor (70) may output rotational angular velocity information due to the movement of the camera device (10A). The motion sensor (70) may include a two-axis or three-axis gyro sensor or an angular velocity sensor.

[0172] The camera device (10A) may include a control unit (80). The control unit (80) may be disposed on a printed circuit board (50). The control unit (80) may be electrically connected to a coil (330) of a lens driving device (10). The control unit (80) may individually control the direction, intensity, amplitude, etc. of the current supplied to the coil (330). The control unit (80) may control the lens driving device (10) to perform an autofocus function and / or a shake correction function. Furthermore, the control unit (80) may perform autofocus feedback control and / or shake correction feedback control for the lens driving device (10).

[0173] The camera device (10A) may include a connector (90). The connector (90) may be electrically connected to a printed circuit board (50). The connector (90) may include a port for electrically connecting to an external device.

[0174]

[0175] Below, an optical device according to the present embodiment is described with reference to the drawings.

[0176] Fig. 21 is a perspective view of a mobile terminal to which a camera module according to the present embodiment is applied, and Fig. 22 is a perspective view of a mobile terminal to which a camera module according to another embodiment of the present invention is applied.

[0177] The optical device (1) may include one or more of a mobile phone, a cell phone, a portable terminal, a mobile terminal, a smart phone, a smart pad, a portable smart device, a digital camera, a laptop computer, a digital broadcasting terminal, a PDA (Personal Digital Assistant), a PMP (Portable Multimedia Player), and a navigation device. The optical device (1) may include any device for taking images or photographs.

[0178] An optical device (1) may include a main body (20). The optical device (1) may include a camera device (10A). The camera device (10A) may be placed on the main body (20). The camera device (10A) may capture a subject. The optical device (1) may include a display. The display may be placed on the main body (20). The display may output one or more of a video or image captured by the camera device (10A). The display may be placed on a first surface of the main body (20). The camera device (10A) may be placed on one or more of the first surface of the main body (20) and a second surface opposite the first surface. As illustrated in FIG. 21, the camera device (10A) may have a triple camera positioned vertically. As illustrated in FIG. 22, the camera device (10A-1) may have a triple camera positioned horizontally.

[0179]

[0180] Those skilled in the art will appreciate that the present invention can be implemented in modified forms without departing from the essential characteristics of the above-described description. Therefore, the disclosed methods should be considered illustrative rather than restrictive. The scope of the present invention is set forth in the claims, not the foregoing description, and all differences within the scope equivalent thereto should be construed as being encompassed by the present invention.

Claims

1. Fixed government; A first moving part arranged on the above fixed part; A second moving part arranged within the first moving part; A first driving unit that moves the first moving unit in the direction of the optical axis; A second driving unit that moves the second moving unit in a first direction perpendicular to the optical axis direction; A first guide magnet part arranged in the first moving part; and Including a second guide magnet part arranged on the above fixed part, A camera actuator in which the first guide magnet portion and the second guide magnet portion face each other.

2. In paragraph 1, The above first guide magnet part includes a first guide magnet and a third guide magnet symmetrically arranged on both sides of the first driving part, A camera actuator including a second guide magnet portion, the second guide magnet portion facing the first guide magnet, and a fourth guide magnet facing the third guide magnet.

3. In paragraph 2, The above first guide magnet section includes a fifth guide magnet opposite the first guide magnet and a seventh guide magnet opposite the third guide magnet, A camera actuator, wherein the second guide magnet section includes a sixth guide magnet facing the fifth guide magnet and an eighth guide magnet facing the seventh guide magnet.

4. In paragraph 3, The first guide magnet, the second guide magnet, the fifth guide magnet, and the sixth guide magnet overlap in the first direction, The camera actuator wherein the third guide magnet, the fourth guide magnet, the seventh guide magnet, and the eighth guide magnet overlap in the first direction.

5. In paragraph 1, A camera actuator in which the length of the second guide magnet portion in the optical axis direction is greater than the length of the first guide magnet portion in the optical axis direction.

6. In paragraph 1, A camera actuator in which the first guide magnet portion and the second guide magnet portion have the same polarity.

7. In paragraph 1, The first guide magnet portion and the second guide magnet portion are arranged with magnets having different polarities in an alternating manner along the optical axis direction, A camera actuator in which a magnet having one polarity in the second guide magnet section is arranged to face two magnets having different polarities in the first guide magnet section.

8. In paragraph 1, The first guide magnet section has magnets of S pole, N pole, S pole, and N pole arranged crosswise along the optical axis direction, The above second guide magnet part is a camera actuator in which magnets of the S pole and the N pole are arranged crosswise along the optical axis direction.

9. Fixed government; A first moving part arranged on the above fixed part; A second moving part arranged within the first moving part; A first driving unit that moves the first moving unit in the direction of the optical axis; A second driving unit that moves the second moving unit in a first direction perpendicular to the optical axis direction; A first guide magnet part arranged in the first moving part; and Includes a guide coil portion arranged on the above fixed portion, A camera actuator in which the first guide magnet portion and the guide coil portion face each other.

10. In paragraph 9, A camera actuator in which the length of the guide coil portion in the optical axis direction is greater than the length of the first guide magnet portion in the optical axis direction.

Images