Lens driving device, camera module, and optical apparatus

Abstract

The present embodiment relates to a lens driving device comprising: a housing; a bobbin disposed within the housing; a coil and a magnet for moving the bobbin in the direction of the optical axis; and a support member connecting the housing and the bobbin, wherein the bobbin includes a groove formed on the outer surface of the bobbin, and the support member includes a first fixing part fixed within the groove of the bobbin.

Description

Technology Field

[0001] The present embodiment relates to a lens driving device, a camera module, and an optical device. Background Technology

[0002] As the distribution of various mobile devices has become widespread and wireless internet services have been commercialized, consumer demands related to mobile devices are also diversifying, leading to the installation of various types of accessory devices on mobile devices.

[0003] A representative example among these is the camera module that captures subjects as photos or videos. Meanwhile, recent camera devices are equipped with an autofocus (AF) function that automatically adjusts the focus based on the distance to the subject.

[0004] However, as the lens aperture increases, when vibration and shock occur in the camera module, the stress applied to the support member supporting the AF drive increases, causing deformation and disconnection of the support member, which results in AF drive failure and oscillation defects. (Patent Document 1) KR 10-1148581 B1 The problem to be solved

[0005] The present embodiment aims to provide a lens driving device comprising an AF support member capable of supporting AF driving of a large-aperture lens.

[0006] In addition, the present embodiment aims to provide a lens driving device including an OIS driving structure using a shape memory alloy (SMA). means of solving the problem

[0007] A lens driving device according to the present embodiment comprises: a housing; a bobbin disposed within the housing; a coil and a magnet for moving the bobbin in the direction of the optical axis; and a support member connecting the housing and the bobbin, wherein the bobbin includes a groove formed on the outer surface of the bobbin, and the support member may include a first fixing part fixed within the groove of the bobbin.

[0008] The above housing includes a groove formed on the inner surface of the housing, and the support member may include a second fixing part fixed within the groove of the housing.

[0009] The above support member includes a connecting portion connecting the first fixing portion and the second fixing portion, and the connecting portion may be formed with a width smaller than the width of the first fixing portion and the second fixing portion at the portion connecting the first fixing portion and the second fixing portion.

[0010] The width of the above-mentioned connecting part may be a length in a direction perpendicular to the longitudinal direction of the above-mentioned connecting part.

[0011] The above connecting part may include a portion whose width increases as it moves further away from the first fixing part and the second fixing part.

[0012] The outer surface of the above-mentioned connecting part may include a curved surface.

[0013] The groove of the above bobbin extends from the upper surface of the above bobbin, and

[0014] The groove of the above housing may extend from the upper surface of the housing.

[0015] The groove of the above bobbin may include a catch projection spaced apart by a width smaller than the width of the first fixing part so that the first fixing part is caught.

[0016] The groove of the housing may include a catch projection spaced apart by a width smaller than the width of the second fixing part so that the second fixing part is caught.

[0017] The magnet may be placed in the bobbin and the coil may be placed in the housing.

[0018] The lens driving device may include a base disposed below the housing; a first substrate disposed on the base; and a shape memory alloy member connecting the housing and the first substrate.

[0019] The shape memory alloy member comprises a first coupling portion coupled to the housing, a second coupling portion coupled to the first substrate, and a shape memory alloy wire connecting the first coupling portion and the second coupling portion, and the length of the shape memory alloy wire can change when current is applied.

[0020] The shape memory alloy member includes a conductive wire connecting the first coupling part and the first substrate, and the shape memory alloy wire may include a first shape memory alloy wire arranged in a first direction perpendicular to the optical axis direction and a second shape memory alloy wire arranged in a second direction perpendicular to the optical axis direction and the first direction.

[0021] The shape memory alloy wires described above include first to fourth shape memory alloy wires, and the first substrate may include first to fourth terminals connected to each of the first to fourth shape memory alloy wires, and a fifth terminal connected in common to the first to fourth shape memory alloy wires.

[0022] It may include a bearing disposed between the housing and the base or between the housing and the first substrate, which contacts the housing when the housing moves in a direction perpendicular to the optical axis.

[0023] It includes an elastic member coupled to the upper surface of the base and the upper surface of the housing, and the elastic member can press the housing in a direction toward the bearing.

[0024] The apparatus includes a second substrate disposed on the side of the base and electrically connected to the first substrate, the elastic member includes first and second elastic members spaced apart from each other, and the coil can be electrically connected to the second substrate through the first and second elastic members.

[0025] The above support member may be formed of an elastomer.

[0026] A camera module according to the present embodiment may include a printed circuit board; an image sensor disposed on the printed circuit board; a lens driving device disposed on the printed circuit board; and a lens coupled to the bobbin of the lens driving device.

[0027] An optical device according to the present embodiment may include a main body; a camera module disposed on the main body; and a display disposed on the main body and outputting an image captured by the camera module.

[0028] A lens driving device according to the present embodiment comprises: a housing; a bobbin disposed within the housing; a coil and a magnet for moving the bobbin in the direction of the optical axis; and a support member connecting the housing and the bobbin, and includes a groove formed on the outer surface of one or more of the bobbin and the housing, and the support member may include a fixing part fixed within the groove. Effects of the invention

[0029] Through this embodiment, deformation of the AF support member supporting the AF drive of a large-aperture lens can be prevented. This allows the AF drive of the large-aperture lens to be performed smoothly.

[0030] In addition, OIS driving using SMA can be performed. Brief explanation of the drawing

[0031] FIG. 1 is a perspective view of a lens driving device according to the present embodiment. Figure 2 is a cross-sectional view taken from AA of Figure 1. Figure 3 is a cross-sectional view taken from BB of Figure 1. Figure 4a is a cross-sectional view and a partial enlarged view of the CC of Figure 1. FIG. 4b is an enlarged view illustrating the combined structure of a support member and a bobbin according to the present embodiment. FIG. 4c is an enlarged view illustrating the combined structure of a support member and a housing according to the present embodiment. FIG. 4d is a plan view of a support member according to the present embodiment. FIG. 4e is a plan view of a support member according to a modified example. FIG. 5 is an exploded view of a lens driving device according to the present embodiment. FIG. 6 is a perspective view of the lens driving device according to the present embodiment with the cover member removed. FIG. 7 is a plan view of the lens driving device according to the present embodiment with the cover member removed. FIG. 8 is a perspective view illustrating a first actuator and a second actuator of a lens driving device according to the present embodiment. FIG. 9 is a perspective view illustrating the combined state of the first actuator, second actuator, elastic member, and second substrate of a lens driving device according to the present embodiment. FIG. 10 is a perspective view illustrating a first substrate, a second substrate, and a shape memory alloy member of a lens driving device according to the present embodiment. FIG. 11a is a drawing for explaining the driving of a shape memory alloy member of a lens driving device according to the present embodiment. FIG. 11b is a drawing illustrating the combined structure of a shape memory alloy member and a housing according to the present embodiment. FIG. 12 is a side view of the lens driving device according to the present embodiment with the cover member removed. FIG. 13 is a drawing for explaining the housing, bearing, and related structure of a lens driving device according to the present embodiment. FIG. 14 is a drawing for explaining the coupling structure of a shape memory alloy member of a lens driving device according to the present embodiment. FIG. 15 is an exploded view of a camera device according to the present embodiment. FIG. 16 is a perspective view illustrating an optical device according to the present embodiment. FIG. 17 is a configuration diagram of an optical device according to the present embodiment. Specific details for implementing the invention

[0032] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

[0033] However, the technical concept of the present invention is not limited to some of the described embodiments but can be implemented in various different forms, and within the scope of the technical concept of the present invention, one or more of the components among the embodiments may be selectively combined or substituted.

[0034] In addition, terms used in the embodiments of the present invention (including technical and scientific terms) may be interpreted in a sense that is generally understood by those skilled in the art to which the present invention belongs, unless explicitly and specifically defined otherwise. Terms that are commonly used, such as terms defined in advance, may be interpreted in consideration of their meaning in the context of the relevant technology.

[0035] Furthermore, the terms used in the embodiments of the present invention are for the purpose of describing the embodiments and are not intended to limit the present invention.

[0036] In this specification, the singular form may include the plural form unless specifically stated otherwise in the text, and when described as "at least one of A and B and C (or more than one)," it may include one or more of all combinations that can be formed from A, B, and C.

[0037] In addition, terms such as first, second, A, B, (a), (b), etc., may be used when describing the components of the embodiments of the present invention. These terms are used merely to distinguish the components from other components and are not intended to limit the essence, order, or sequence of the components.

[0038] And, where it is stated that a component is 'connected', 'combined', or 'connected' to another component, this may include not only cases where the component is directly 'connected', 'combined', or 'connected' to the other component, but also cases where it is 'connected', 'combined', or 'connected' due to another component located between the component and the other component.

[0039] Furthermore, when described as being formed or placed "above" or "below" each component, "above" or "below" includes not only cases where two components are in direct contact with each other, but also cases where one or more other components are formed or placed between the two components. Additionally, when expressed as "above" or "below," it may include the meaning of a downward direction as well as an upward direction relative to a single component.

[0040] As used below, the 'Optical Axis Direction' is defined as the optical axis direction of the lens and / or image sensor coupled to the lens driving device.

[0041] As used below, the 'vertical direction' may be a direction parallel to the optical axis. The vertical direction may correspond to the 'z-axis direction'. As used below, the 'horizontal direction' 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'.

[0042] The 'Auto Focus (AF) function' used below is defined as a function that automatically focuses on a subject by adjusting the distance to the image sensor through moving the lens along the optical axis according to the distance to the subject, so that a clear image of the subject can be obtained on the image sensor.

[0043] The '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 cancel out vibrations (movements) generated in the image sensor by external force.

[0045] The configuration of the lens driving device according to the present embodiment will be described below with reference to the drawings.

[0046] FIG. 1 is a perspective view of a lens driving device according to the present embodiment, FIG. 2 is a cross-sectional view taken from AA of FIG. 1, FIG. 3 is a cross-sectional view taken from BB of FIG. 1, FIG. 4a is a cross-sectional view taken from CC of FIG. 1 and a partially enlarged view, FIG. 4b is an enlarged view illustrating the coupling structure of a support member and a bobbin according to the present embodiment, FIG. 4c is an enlarged view illustrating the coupling structure of a support member and a housing according to the present embodiment, FIG. 4d is a plan view of a support member according to the present embodiment, FIG. 4e is a plan view of a support member according to a modified example, FIG. 5 is an exploded perspective view of a lens driving device according to the present embodiment, FIG. 6 is a perspective view of a lens driving device according to the present embodiment with the cover member removed, FIG. 7 is a plan view of a lens driving device according to the present embodiment with the cover member removed, FIG. 8 is a perspective view illustrating a first actuator and a second actuator of a lens driving device according to the present embodiment, FIG. 9 is a lens driving device according to the present embodiment FIG. 10 is a perspective view illustrating the combined state of a first actuator, a second actuator, an elastic member, and a second substrate, FIG. 10 is a perspective view illustrating the first substrate, the second substrate, and a shape memory alloy member of a lens driving device according to the present embodiment, FIG. 11a is a drawing for explaining the driving of the shape memory alloy member of a lens driving device according to the present embodiment, FIG. 11b is a drawing illustrating the combined structure of the shape memory alloy member and the housing according to the present embodiment, FIG. 12 is a side view of the lens driving device according to the present embodiment with the cover member removed, FIG. 13 is a drawing for explaining the housing, bearing, and related structure of the lens driving device according to the present embodiment, and FIG. 14 is a drawing for explaining the combined structure of the shape memory alloy member of the lens driving device according to the present embodiment.

[0047] 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.

[0048] The lens driving device (10) may include a first movable member (100). The first movable member (100) may be coupled to the lens. The first movable member (100) may be connected to a second movable member (200) through a support member (500). The first movable member (100) may move through interaction with the second movable member (200). At this time, the first movable member (100) may move integrally with the lens. Meanwhile, the first movable member (100) may move during AF driving. At this time, the first movable member (100) may be referred to as an 'AF movable member'. However, the first movable member (100) may also move together with the second movable member (200) during OIS driving.

[0049] The lens driving device (10) may include a bobbin (110). The first actuator (100) may include a bobbin (110). The bobbin (110) may be placed within a housing (210). The bobbin (110) may be placed in a hole of the housing (210). The bobbin (110) may be movably coupled to the housing (210). The bobbin (110) may move in the optical axis direction within the housing (210). The bobbin (110) may move in the optical axis direction by means of a coil (220) and a magnet (120). A lens may be coupled to the bobbin (110). The bobbin (110) and the lens may be coupled by screw coupling and / or adhesive. A magnet (120) may be placed on the bobbin (110). Alternatively, as a variation, a coil (220) may be placed on a bobbin (110).

[0050] The bobbin (110) may include a groove (111). The groove (111) may be formed on the outer surface of the bobbin (110). The groove (111) of the bobbin (110) may extend from the upper surface of the bobbin (110). The groove (111) of the bobbin (110) may be open to the upper surface of the bobbin (110). The groove (111) of the bobbin (110) may be open to the upper surface of the bobbin (110). The groove (111) of the bobbin (110) may be open to the outside of the bobbin (110). The groove (111) of the bobbin (110) may be open to the outside of the bobbin (110). The groove (111) of the bobbin (110) may include a bottom surface facing upward. A first fixing part (510) of a support member (500) can be placed on the bottom surface of the groove (111) of the bobbin (110).

[0051] The bobbin (110) may include a catch (112). The catch (112) may be formed to catch the first fixing part (510) of the support member (500). The catch (112) may provide a space formed with a width smaller than the width of the first fixing part (510) of the support member (500). The connecting part (530) of the support member (500) may pass through the spaced-apart space between the catch (112). The catch (112) may include two ledges spaced apart from each other. A spaced-apart space may be provided between the two ledges. The width of the spaced-apart space may be smaller than the width of the first fixing part (510) of the support member (500) in the corresponding direction. The spaced-apart space may be formed as a groove or a hole. The groove (111) of the bobbin (110) may include a catch (112) spaced apart by a width smaller than the width of the first fixing part (510) so that the first fixing part (510) is caught.

[0052] The lens driving device (10) may include a magnet (120). The first actuator (100) may include a magnet (120). The magnet (120) may be placed on a bobbin (110). Alternatively, as a variation, the magnet (120) may be placed on a housing (210). In this case, the coil (220) may be placed on the bobbin (110). The magnet (120) may be placed on the outer surface or outer circumference of the bobbin (110). The magnet (120) may be fixed to the bobbin (110) by an adhesive. The magnet (120) may be placed between the bobbin (110) and the housing (210). The magnet (120) may be opposite to the coil (220). The magnet (120) may have an electromagnetic interaction with the coil (220). The magnet (120) can move the bobbin (110) in the direction of the optical axis through interaction with the coil (220). The magnet (120) can be used for AF driving. The magnet (120) can be placed on the side of the bobbin (110). The magnet (120) may be a flat magnet having a flat plate shape.

[0053] The magnet (120) may include a plurality of magnets. The magnet (120) may include a first magnet disposed on a first side of the bobbin (110) and a second magnet disposed on a second side opposite the first side of the bobbin (110). The first magnet and the second magnet may be spaced apart from each other.

[0054] The lens driving device (10) may include a second movable member (200). The second movable member (200) may be movably coupled to the stator (300) through an elastic member (600) and a bearing (700). The second movable member (200) may support the first movable member (100) through a support member (500). The second movable member (200) may move the first movable member (100) or move together with the first movable member (100). The second movable member (200) may move through interaction with the stator (300). The second movable member (200) may move when driving the OIS. At this time, the second movable member (200) may be referred to as the 'OIS movable member'. The second movable (200) can move together with the first movable (100) when OIS is driven.

[0055] The lens driving device (10) may include a housing (210). The second actuator (200) may include a housing (210). The housing (210) may be spaced apart from the base (310). The housing (210) may be positioned on the outside of the bobbin (110). The housing (210) may accommodate at least a portion of the bobbin (110). The housing (210) may be positioned within the cover member (340). The housing (210) may be positioned between the cover member (340) and the bobbin (110). The housing (210) may be formed of a material different from that of the cover member (340). The housing (210) may be formed of an insulating material. The housing (210) may be formed as an injection molded product. The outer side of the housing (210) may be spaced apart from the inner surface of the side plate (342) of the cover member (340). The housing (210) can move for OIS driving through the gap between the housing (210) and the cover member (340). A coil (220) may be placed in the housing (210). The housing (210) and the coil (220) may be joined by an adhesive.

[0056] The housing (210) may include four sides and four corner sections positioned between the four sides. The sides of the housing (210) may include a first side, a second side positioned opposite the first side, and a third side and a fourth side positioned opposite each other between the first side and the second side. The corner sections of the housing (210) may include a first corner section positioned between the first side and the third side, a second corner section positioned between the first side and the fourth side, a third corner section positioned between the second side and the third side, and a fourth corner section positioned between the second side and the fourth side. The sides of the housing (210) may include a 'lateral wall'.

[0057] The housing (210) may include a groove (211). The groove (211) may be formed on the inner surface of the housing (210). The groove (211) of the housing (210) may extend from the upper surface of the housing (210). The groove (211) of the housing (210) may be open to the upper surface of the housing (210). The groove (211) of the housing (210) may be open to the upper surface of the housing (210). The groove (211) of the housing (210) may be open to the outside of the housing (210). The groove (211) of the housing (210) may be open to the outside of the housing (210). The groove (211) of the housing (210) may include a bottom surface facing upward. A second fixing part (520) of the support member (500) can be placed on the bottom surface of the groove (211) of the housing (210).

[0058] The housing (210) may include a catch (212). The catch (212) may be formed to catch the second fixing part (520) of the support member (500). The catch (212) may provide a space formed with a width smaller than the width of the second fixing part (520) of the support member (500). The connecting part (530) of the support member (500) may pass through the spaced-out space between the catch (212). The catch (212) may include two ridges spaced apart from each other. A spaced-out space may be provided between the two ridges. The width of the spaced-out space may be smaller than the width of the second fixing part (520) of the support member (500) in the corresponding direction. The spaced-out space may be formed as a groove or a hole. The groove (211) of the housing (210) may include a catch (212) spaced apart by a width smaller than the width of the second fixing part (520) so that the second fixing part (520) is caught.

[0059] The housing (210) may include an upper stopper (213). The upper stopper (213) may protrude from the upper surface of the housing (210). The upper stopper (213) may be formed on the upper surface of the housing (210). The upper stopper (213) may overlap with the upper plate (341) of the cover member (340) in the optical axis direction. The upper stopper (213) may form the uppermost part of the housing (210). Through this, when the housing (210) moves upward, the upper stopper (213) may come into contact with the upper plate (341) of the cover member (340). That is, the upper stopper (213) may restrict the upward movement of the housing (210).

[0060] The housing (210) may include a lateral stopper (214). The lateral stopper (214) may protrude from the outer surface of the housing (210). The lateral stopper (214) may face the inner surface of the side plate (342) of the cover member (340). The lateral stopper (214) may come into contact with the side plate (342) of the cover member (340) when the housing (210) moves sideways. That is, the lateral stopper (214) can physically limit the stroke of the housing (210) to the side.

[0061] The lens drive device (10) may include a coil (220). The second driveer (200) may include a coil (220). The coil (220) may be an 'AF drive coil' used for AF drive. The coil (220) may be placed in the housing (210). Alternatively, as a variation, the coil (220) may be placed in the bobbin (110). In this case, the magnet (120) may be placed in the housing (210). The coil (220) may be placed between the bobbin (110) and the housing (210). The coil (220) may be placed on the inner lateral surface or inner peripheral surface of the housing (210). The coil (220) may be coiled in series in the housing (210). Alternatively, the coil (220) may be coupled to the housing (210) in a series-wound state. The coil (220) may be positioned opposite the magnet (120). The coil (220) may be positioned facing the magnet (120). The coil (220) may have electromagnetic interaction with the magnet (120). In this case, when current is supplied to the coil (220) and an electromagnetic field is formed around the coil (220), the magnet (120) may move relative to the coil (220) due to the electromagnetic interaction between the coil (220) and the magnet (120). The coil (220) may be formed as a single coil.

[0062] The coil (220) may include a plurality of coils. The coil (220) may include a first coil facing a first magnet and a second coil facing a second magnet. The coil (220) may include a connecting coil connecting the first coil and the second coil. The coil (220) may be electrically connected to the second substrate (330) through the first and second elastic members (601, 602). The coil (220) may receive power from the second substrate (330) through the elastic member (600).

[0063] The lens driving device (10) may include a stator (300). The stator (300) may be positioned below the first and second movables (200, 300). The stator (300) may movably support the second movable (200). The stator (300) may move the second movable (200). At this time, the first movable (100) may also move together with the second movable (200).

[0064] The lens driving device (10) may include a base (310). The stator (300) may include a base (310). The base (310) may be placed below the housing (210). The base (310) may be placed below the first substrate (320). The first substrate (320) may be placed on the upper surface of the base (310). The base (310) may be coupled with a cover member (340). The base (310) may be placed on top of a printed circuit board (50).

[0065] The base (310) may include a body portion (311). The body portion (311) may be positioned between the housing (210) and the printed circuit board (50). The body portion (311) may be positioned in a direction perpendicular to the optical axis direction. The base (310) may include a side wall portion (312). The side wall portion (312) may protrude from the upper surface of the body portion (311). The side wall portion (312) may protrude upward from the body portion (311). The side wall portion (312) may accommodate the housing (210) inside.

[0066] The lens driving device (10) may include a first substrate (320). The stator (300) may include the first substrate (320). The first substrate (320) may be placed on a base (310). The first substrate (320) may be placed between the base (310) and the housing (210). The first substrate (320) may be placed on the upper surface of the base (310). The first substrate (320) may be combined with a second substrate (330) that is soldered to a printed circuit board (50) placed below the base (310). Alternatively, the first substrate (230) and the second substrate (330) may be formed integrally. In this case, the first substrate (320) may include a flexible printed circuit board (FPCB). The first substrate (320) can be folded in part.

[0067] The first substrate (320) may include a terminal (321). The terminal (321) may be formed on the side of the first substrate (320). The terminal (321) of the first substrate (320) may be coupled to the second substrate (330). The terminal (321) of the first substrate (320) may be coupled to the second terminal (332) of the second substrate (330). The terminal (321) of the first substrate (320) may be electrically connected to the second terminal (332) of the second substrate (330) by solder or conductive epoxy.

[0068] The terminal (321) of the first substrate (320) may include first to fourth terminals (321, 322, 323, 324) connected to each of the first to fourth shape memory alloy wires (431, 432, 433, 434), and a fifth terminal (325) connected in common to the first to fourth shape memory alloy wires (431, 432, 433, 434). At this time, a positive (+) current may be applied to the first to fourth terminals (321, 322, 323, 324) and a negative (-) current may be applied to the fifth terminal (325). Conversely, a negative (-) current may be applied to the first to fourth terminals (321, 322, 323, 324) and a positive (+) current may be applied to the fifth terminal (325).

[0069] The first substrate (320) may include a terminal (327). The terminal (327) may be placed on the upper surface of the first substrate (320). The terminal (327) may be coupled to a conductive wire (440). The terminal (327) may be coupled to the conductive wire (440) through solder and / or conductive epoxy. The terminal (327) may include four terminals.

[0070] The lens driving device (10) may include a second substrate (330). The stator (300) may include a second substrate (330). The second substrate (330) may be placed on the side of the base (310). The second substrate (330) may be electrically connected to the first substrate (320). The second substrate (330) may be electrically connected to a shape memory alloy member (400). The second substrate (330) may be electrically connected to a coil (220). The second substrate (330) may be electrically connected to a printed circuit board (50).

[0071] The second substrate (330) may include a first terminal (331). The first terminal (331) may be disposed on the outer surface of the second substrate (330). The first terminal (331) may be formed at the bottom of the second substrate (330). The first terminal (331) of the second substrate (330) may be coupled with a terminal of the printed circuit board (50). The first terminal (331) may include a plurality of terminals. The first terminal (331) may include seven terminals. Two of the seven terminals may be electrically connected to the coil (220). Five of the seven terminals may be electrically connected to the shape memory alloy wire (430).

[0072] The second substrate (330) may include a second terminal (332). The second terminal (332) may be disposed on the inner surface of the second substrate (330). The second terminal (332) may be formed on the lower surface of the second substrate (330). The second terminal (332) may be disposed at a height corresponding to that of the first substrate (320). The second terminal (332) of the second substrate (330) may be coupled with the terminal (321) of the first substrate (320). The second terminal (332) may include a plurality of terminals. The second terminal (332) may include five terminals. The five terminals may each be connected to the first to fifth terminals (322, 323, 324, 325, 326) of the first substrate (320).

[0073] The lens driving device (10) may include a cover member (340). The stator (300) may include a cover member (340). The cover member (340) may include a 'cover can'. The cover member (340) may be placed on the outside of the housing (210). The cover member (340) may be coupled with the base (310). The cover member (340) may accommodate the housing (210) inside. The cover member (340) may form the exterior of the lens driving device (10). The cover member (340) may have a cuboid shape with an open bottom surface. The cover member (340) may be a non-magnetic material. The cover member (340) may be formed of a metal material. The cover member (340) may be formed of a metal plate. The cover member (340) can be connected to the ground portion of the printed circuit board (50). Through this, the cover member (340) can be grounded. The cover member (340) can block electromagnetic interference (EMI). At this time, the cover member (340) may be referred to as an 'EMI shield can'.

[0074] The cover member (340) may include a top plate (341) and a side plate (342). The cover member (340) may include a top plate (341) containing a hole and a side plate (342) extending downward from the outer periphery or edge of the top plate (341). The lower end of the side plate (342) of the cover member (340) may be placed on a stepped portion of the base (310). The inner surface of the side plate (342) of the cover member (340) may be fixed to the base (310) by an adhesive.

[0075] The top plate (341) of the cover member (340) may include a hole. The hole may include an 'opening'. The hole may be formed in the top plate (341) of the cover member (340). When viewed from above, a lens may be visible through the hole. The hole may be formed with a size and shape corresponding to the lens. The size of the hole may be formed larger than the diameter of the lens module (20) so that the lens module (20) can be inserted and assembled through the hole. Light entering through the hole may pass through the lens. At this time, the light passing through the lens may be converted into an electrical signal by the image sensor (60) and acquired as an image.

[0076] The lens driving device (10) may include a shape memory alloy member (400). The shape memory alloy member (400) may connect the housing (210) and the first substrate (320). The shape memory alloy member (400) may connect the base (310) and the housing (210). The shape memory alloy member (400) may connect the stator (300) and the second movable member (200). Alternatively, the shape memory alloy member (400) may connect the stator (300) and the first movable member (100). The shape memory alloy member (400) may connect the base (310) and the bobbin (110).

[0077] The shape memory alloy member (400) can be used for OIS driving. The shape memory alloy member (400) can move the housing (210) in a direction perpendicular to the optical axis direction with respect to the base (310). At this time, the bobbin (110) can move integrally with the housing (210). The lens module (20) coupled to the bobbin (110) can also move integrally with the housing (210). Through this, the lens module (20) can be moved in a direction perpendicular to the optical axis direction with respect to the image sensor (60).

[0078] The shape memory alloy member (400) may include a shape memory alloy (SMA). The shape memory alloy may change its shape when current is applied. The shape memory alloy may change its length when current is applied. The shape memory alloy may shorten its length when current is applied. The shape memory alloy may extend its length when current is applied.

[0079] The shape memory alloy member (400) may include a first coupling part (420). The first coupling part (420) may be a part that moves together with the housing (210) and may be a 'moving part'. The first coupling part (420) may be coupled to the housing (210). The first coupling part (420) may be fixed to the housing (210). The first coupling part (420) may include metal. The first coupling part (420) may include a part formed of a conductive material. The first coupling part (420) may include a plurality of first coupling parts. The first coupling part (420) may include two first coupling parts. The two first coupling parts may be arranged on opposite sides of each other with respect to the optical axis. Each of the two first coupling parts may include two conductive lines. Each of the two first coupling parts may include a first and a second conductive line. Each of the first and second conduction lines can be electrically connected to a shape memory alloy wire (430).

[0080] The shape memory alloy member (400) may include a second coupling part (410). The second coupling part (410) may be a 'fixing part' that maintains a fixed state together with the first substrate (320). The second coupling part (410), which is a fixing part, can move the first coupling part (420), which is a moving part, and the housing (210) relative to the first substrate (320). The second coupling part (410) may be coupled to the first substrate (320). The second coupling part (410) may be fixed to the first substrate (320). The second coupling part (410) may be coupled to the base (310). The second coupling part (410) may be fixed to the base (310). The second coupling part (410) may include metal. The second coupling part (410) may include a portion formed of an electrically conductive material. The second coupling part (410) may include a plurality of second coupling parts. The second coupling part (410) may include two second coupling parts. The two second coupling parts may be positioned opposite each other with respect to the optical axis. The first coupling part (420) may be positioned at two of the four corners of the base (310), and the second coupling part (410) may be positioned at the remaining two corners. Each of the two second coupling parts may include two conductive lines. Each of the two second coupling parts may include a first and a second conductive line. Each of the first and second conductive lines may electrically connect the shape memory alloy wire (430) and the first substrate (320).

[0081] The shape memory alloy member (400) may include a shape memory alloy wire (430). The shape memory alloy wire (430) may connect the first coupling part (420) and the second coupling part (410). The length of the shape memory alloy wire (430) may change when current is applied. The shape memory alloy wire (430) may include a shape memory alloy (SMA). The shape memory alloy wire (430) may be formed from a shape memory alloy (SMA). The shape of the shape memory alloy wire (430) may change when current is applied. The length of the shape memory alloy wire (430) may change when current is applied. The length of the shape memory alloy wire (430) may be reduced when current is applied. The length of the shape memory alloy wire (430) may be extended when current is applied.

[0082] The shape memory alloy wire (430) may include a plurality of shape memory alloy wires. The shape memory alloy wire (430) may include four shape memory alloy wires. The shape memory alloy wire (430) may include first to fourth shape memory alloy wires (431, 432, 433, 434). The first and second shape memory alloy wires (431, 432) may be arranged in a first direction perpendicular to the optical axis direction. The third and fourth shape memory alloy wires (433, 434) may be arranged in a second direction perpendicular to the optical axis direction and the first direction. Through such a structure, the first and second shape memory alloy wires (431, 432) may be used to move the first and second movables (100, 200) in a first direction perpendicular to the optical axis direction. Additionally, the third and fourth shape memory alloy wires (433, 434) can be used to move the first and second movables (100, 200) in a second direction perpendicular to the optical axis direction and the first direction.

[0083] For example, as illustrated in FIG. 11, when current is applied to the third shape memory alloy wire (433) so that the length of the third shape memory alloy wire (433) is shortened (see FIG. 11 a) and the length of the fourth shape memory alloy wire (434) is lengthened (see FIG. 11 b), the first and second movables (100, 200) can move in one of the second directions, which is the length direction of the third and fourth shape memory alloy wires (433, 434) (see FIG. 11 c). Conversely, when current is applied to the fourth shape memory alloy wire (434) so ​​that the length of the fourth shape memory alloy wire (434) is shortened and the length of the third shape memory alloy wire (433) is lengthened, the first and second movables (100, 200) can move to the other side of the second direction, which is the length direction of the third and fourth shape memory alloy wires (433, 434).

[0084] Likewise, when current is applied to the first shape memory alloy wire (431) so that the length of the first shape memory alloy wire (431) is shortened and the length of the second shape memory alloy wire (432) is lengthened, the first and second movers (100, 200) can move to one side of the first direction, which is the length direction of the first and second shape memory alloy wires (431, 432). Conversely, when current is applied to the second shape memory alloy wire (432) so that the length of the second shape memory alloy wire (432) is shortened and the length of the first shape memory alloy wire (431) is lengthened, the first and second movers (100, 200) can move to the other side of the first direction, which is the length direction of the first and second shape memory alloy wires (431, 432).

[0085] The shape memory alloy member (400) may include a conductive wire (440). The conductive wire (440) may connect the first coupling part (420) and the first substrate (320). The conductive wire (440) may electrically connect the first coupling part (420) and the first substrate (320). The conductive wire (440) may be coupled to a terminal (327) of the first substrate (320). The conductive wire (440) may include a plurality of conductive wires. The conductive wire (440) may include two conductive wires. Each of the two conductive wires may include two conductive lines. The conductive lines may be formed on the surface of the conductive wire. The two conductive lines may be spaced apart from each other. The conductive wire (440) may have elasticity. The conductive wire (440) may be formed of an elastic member.

[0086] The lens driving device (10) may include a support member (500). The support member (500) may connect the housing (210) and the bobbin (110). The support member (500) may support the bobbin (110) against the housing (210) when the bobbin (110) moves in the direction of the optical axis. The support member (500) may have elasticity. The support member (500) may include an elastic portion. The support member (500) may be elastically restored. The support member (500) may be formed of an elastomer. One end of the support member (500) may be fixed to the bobbin (110), and the other end of the support member (500) may be fixed to the housing (210). A portion of the support member (500) may be bonded to the bobbin (110). The adhesive can be placed in the groove (111) of the bobbin (110). The support member (500) can have other parts bonded to the housing (210). The adhesive can be placed in the groove (211) of the housing (210).

[0087] The support member (500) may include a first fixing part (510). The first fixing part (510) may be fixed within the groove (111) of the bobbin (110). The first fixing part (510) may be formed with a width corresponding to the groove (111) of the bobbin (110). The first fixing part (510) may be fixed to the bobbin (110) by an adhesive. The first fixing part (510) may be inserted into the groove (111) of the bobbin (110) from the upper side. The first fixing part (510) may be placed on the bottom surface of the groove (111) of the bobbin (110).

[0088] The support member (500) may include a second fixing part (520). The second fixing part (520) may be fixed within the groove (211) of the housing (210). The second fixing part (520) may be formed with a width corresponding to the groove (211) of the housing (210). The second fixing part (520) may be fixed to the housing (210) by an adhesive. The second fixing part (520) may be inserted into the groove (211) of the housing (210) from the upper side. The second fixing part (520) may be placed on the bottom surface of the groove (211) of the housing (210).

[0089] The support member (500) may include a connecting portion (530). The connecting portion (530) may connect the first fixing portion (510) and the second fixing portion (520). The connecting portion (530) may be formed with a width smaller than the width of the first fixing portion (510) and the second fixing portion (520) at the portion connecting the first fixing portion (510) and the second fixing portion (520). At this time, the width of the connecting portion (530) may be a length in a direction perpendicular to the longitudinal direction of the connecting portion (530). The connecting portion (530) may include a first portion (540) that is connected to the first fixing portion (510) and is formed with a width smaller than the width of the first fixing portion (510). The connecting portion (530) may include a second portion (550) that is connected to the second fixing portion (520) and is formed with a width smaller than the width of the second fixing portion (520). The first part (540) and the second part (550) of the connecting part (530) may be hinge parts. When the bobbin (110) moves, bending may occur in the first part (540) and the second part (550) of the connecting part (530). The first part (540) of the connecting part (530) may be the first hinge part and the second part (550) may be the second hinge part.

[0090] The connecting portion (530) may include a portion whose width increases as it moves away from the first fixing portion (510) and the second fixing portion (520). The connecting portion (530) may include a third portion that connects the first portion (540) and the second portion (550) and is formed with a width greater than the width of the first portion (540) and the second portion (550). The connecting portion (530) may be formed with the greatest width at the center. The outer surface of the connecting portion (530) may include a curved surface. The outer surface of the connecting portion (530) may be formed exclusively as a curved surface. The connecting portion (530) may be formed to have curvature.

[0091] In the modified example shown in (a) of FIG. 4e, the supporting member (500a) may have a connecting portion (530a) that extends from the first fixed portion (510) to the second fixed portion (520) with a constant width or diameter.

[0092] In the modified example illustrated in (b) of FIG. 4e, the support member (500b) may include a cylindrical connecting portion (530b). The cylindrical shape may connect a first portion (540) and a second portion (550) having a width smaller than that of the first fixed portion (510) and the second fixed portion (520).

[0093] In the modified example illustrated in (c) of FIG. 4e, the support member (500c) may include a groove (560) formed in the connecting portion (530c). The groove (560) may be formed between the first portion (540) and the second portion (550), having a width smaller than that of the first fixing portion (510) and the second fixing portion (520).

[0094] The lens driving device (10) may include an elastic member (600). The elastic member (600) may connect the base (310) and the housing (210). The elastic member (600) may be coupled to the base (310) and the housing (210). The elastic member (600) may be coupled to the upper surface of the base (310) and the upper surface of the housing (210). The elastic member (600) may have elasticity in at least a portion. The elastic member (600) may be formed of metal. The elastic member (600) may be formed of an electrically conductive material. The elastic member (600) may elastically support the housing (210). The elastic member (600) may movably support the housing (210).

[0095] The elastic member (600) may include a plurality of elastic members. The elastic member (600) may include two elastic members. The elastic member (600) may include first and second elastic members (601, 602) spaced apart from each other. The elastic member (600) may electrically connect the second substrate (330) and the coil (220).

[0096] The elastic member (600) may include an inner part (610) coupled to the housing (210), an outer part (620) coupled to the base (310), and a connecting part (630) connecting the inner part (610) and the outer part (620). In this embodiment, the inner part (610) may be positioned higher than the outer part (620). Through such a structure, the elastic member (600) can press the housing (210) downward. Through this, the housing (210) can maintain a state in contact with the bearing (700). The elastic member (600) can press the housing (210) in a direction toward the bearing (700). As illustrated in FIG. 13, the height of the inner portion (610) of the elastic member (600) can be positioned higher than the height of the outer portion (620) of the elastic member (600) by a predetermined distance (see D in FIG. 12 and FIG. 13). Through this, downward pressure due to the elastic force of the elastic member (600) can be applied to the housing (210) coupled with the inner portion (610) of the elastic member (600).

[0097] The lens driving device (10) may include a bearing (700). The bearing (700) may be positioned between the housing (210) and the base (310). The bearing (700) may be positioned between the housing (210) and the first substrate (320). The bearing (700) may come into contact with the housing (210) when the housing (210) moves in a direction perpendicular to the optical axis. Through this, the frictional force generated when the housing (210) moves in a direction perpendicular to the optical axis may be reduced. The bearing (700) may be formed in a cylindrical shape, with one side fixed to the first substrate (320) or the base (310). At this time, the other side of the bearing (700) may come into contact with the housing (210). As a variation, the bearing (700) may be formed in a ball shape. At this time, a groove or hole may be provided to fix the ball-shaped bearing (700) to the first substrate (320) or base (310).

[0098] In this embodiment, a groove may be formed on the outer surface of one or more of the bobbin (110) and the housing (210). At this time, the support member (500) may include a fixing part that is fixed within the groove of the bobbin (110) and / or the housing (210). The fixing part of the support member (500) may be inserted into the groove of the bobbin (110) and / or the housing (210).

[0099] The lens driving device according to the present embodiment may use a hinge for AF driving and an SMA wire for OIS driving. In this case, there is a reliability advantage and it can be applied to large-diameter, heavy-weight actuators.

[0100] In this embodiment, AF driving can be controlled by connecting to an injection-molded member. Balance can be maintained by fixing the injection-molded member in four directions. Electromagnetic force for AF driving can be secured by two magnets and coil driving.

[0101] The bobbin (110) may be a lens carrier. The bobbin (110) and the housing (210) can be connected and controlled by a support member (500) which is a plurality of injection-molded members. The AF drive can be driven up and down by the electromagnetic force generated from a coil (220) facing a magnet (120). At this time, the magnet (120) and the coil (220) can be used in multiple numbers while maintaining balance.

[0102] The second coupling part (410) may be a fixed part, and the first coupling part (420) may be a driving part. The fixed part may be fixed to the base (310), and the driving part may be fixed to the housing (210). In this embodiment, OIS driving may be performed according to the SMA characteristic, which changes in length depending on the temperature. For example, if one SMA wire becomes shorter and the opposite SMA wire becomes longer, the second driving part (200) may move in the same direction.

[0103] The coil (220) can be connected to the second substrate (330), which is a PCB, using an elastic member (600). The elastic member (600) can be fixed to the housing (210) and the base (310). Each end of the four shape memory alloy wires (430) connected to the second coupling part (410), which is a fixing part, can be connected to the first substrate (320) to form one terminal. Each end of the four shape memory alloy wires (430) connected to the first coupling part (420), which is a driving part, can be connected to the first substrate (320) via a PCB pattern or a conductive wire (440) to form four terminals through each pattern.

[0104] In this embodiment, by creating a height difference between the elastic member (600) fixed to the base (310) and the housing (210), the second movable member (200), which is the OIS body, can be maintained in the downward direction toward the bearing (700) by the restoring force of the elastic member (600). The elastic member (600) may be a spring.

[0105] Additionally, the conductive wire (440) under the housing (210) can also maintain the second actuator (200) in a downward direction with restoring force. The conductive wire (440) may be an elastic body for wire signals.

[0107] Hereinafter, a camera module according to the present embodiment will be described with reference to the drawings.

[0108] FIG. 15 is an exploded view of a camera device according to the present embodiment.

[0109] The camera module (10A) may include a camera device.

[0110] The camera module (10A) may include a lens module (20). The lens module (20) may include at least one lens. The lens may be positioned at a location 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 a bobbin (110) of the lens drive device (10). The lens module (20) may be coupled to the bobbin (110) by screw coupling and / or adhesive. The lens module (20) may move integrally with the bobbin (110).

[0111] The camera module (10A) may include a filter (30). The filter (30) may serve to block light of a specific frequency band from passing through the lens module (20) from entering the image sensor (60). The filter (30) may be positioned parallel to the xy plane. The filter (30) may be positioned between the lens module (20) and the image sensor (60). The filter (30) may be positioned on the sensor base (40). As a variation, the filter (30) may be positioned on the base (410). The filter (30) may include an infrared filter. The infrared filter may block light in the infrared region from entering the image sensor (60).

[0112] The camera module (10A) may include a sensor base (40). The sensor base (40) may be positioned 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 placed. An opening may be formed in the portion of the sensor base (40) on which the filter (30) is placed so that light passing through the filter (30) can be incident on the image sensor (60). An adhesive member (45) may bond or bond the base (410) of the lens driving device (10) to the sensor base (40). The adhesive member (45) may additionally serve to prevent foreign substances from entering the interior of the lens driving device (10). The adhesive member (45) may include one or more of epoxy, thermosetting adhesive, and UV-curing adhesive.

[0113] The camera module (10A) may include a printed circuit board (PCB) (50). The printed circuit board (50) may be a board or a circuit board. A lens driving device (10) may be placed on the printed circuit board (50). A sensor base (40) may be placed 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 placed on the printed circuit board (50). The printed circuit board (50) may be equipped with various circuits, components, control units, etc., to convert an image formed on the image sensor (60) into an electrical signal and transmit it to an external device.

[0114] The camera module (10A) may include an image sensor (60). The image sensor (60) may be configured such that an image is formed when light passing through a lens and a filter (30) is incident. 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) by Surface Mounting Technology (SMT). As another example, the image sensor (60) may be coupled to the printed circuit board (50) by flip chip technology. The image sensor (60) may be positioned so that its optical axis aligns 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 an effective image area of ​​the image sensor (60) into an electrical signal. The image sensor (60) may be any one of a CCD (charge coupled device), a MOS (metal oxide semiconductor), a CPD, and a CID.

[0115] The camera module (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 based on the movement of the camera module (10A). The motion sensor (70) may include a 2-axis or 3-axis gyro sensor or an angular velocity sensor.

[0116] The camera module (10A) may include a control unit (80). The control unit (80) may be placed on a printed circuit board (50). The control unit (80) may be electrically connected to the first and second coils (220, 430) of the lens driving device (10). The control unit (80) may individually control the direction, strength, and amplitude of the current supplied to the first and second coils (220, 430). The control unit (80) may control the lens driving device (10) to perform an autofocus function and / or a hand image correction function. Furthermore, the control unit (80) may perform autofocus feedback control and / or hand image correction feedback control for the lens driving device (10).

[0117] The camera module (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.

[0119] Hereinafter, an optical device according to the present embodiment will be described with reference to the drawings.

[0120] FIG. 16 is a perspective view illustrating an optical device according to the present embodiment, and FIG. 17 is a configuration diagram of an optical device according to the present embodiment.

[0121] The optical device (10B) may be any one of a mobile phone, a smartphone, a portable smart device, a digital camera, a laptop computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player), and a navigation device. However, the type of optical device (10B) is not limited to these, and any device for taking images or photos may be included in the optical device (10B).

[0122] The optical device (10B) may include a main body (850). The main body (850) may be in the form of a bar. Alternatively, the main body (850) may have various structures such as a slide type, folder type, swing type, or swivel type in which two or more sub-bodies are combined to move relative to each other. The main body (850) may include a case (casing, housing, cover) forming the exterior. For example, the main body (850) may include a front case (851) and a rear case (852). Various electronic components of the optical device (10B) may be embedded in the space formed between the front case (851) and the rear case (852). A display module (753) may be placed on one side of the main body (850). A camera (721) may be placed on one or more sides of the main body (850), including one side and the other side opposite to that side.

[0123] The optical device (10B) may include a wireless communication unit (710). The wireless communication unit (710) may include one or more modules that enable wireless communication between the optical device (10B) and a wireless communication system or between the optical device (10B) and a network where the optical device (10B) is located. For example, the wireless communication unit (710) may include one or more of a broadcast reception module (711), a mobile communication module (712), a wireless internet module (713), a short-range communication module (714), and a location information module (715).

[0124] The optical device (10B) may include an A / V input unit (720). The A / V (Audio / Video) input unit (720) is for inputting an audio signal or a video signal and may include one or more of a camera (721) and a microphone (722). In this case, the camera (721) may include a camera module (10A) according to the present embodiment.

[0125] The optical device (10B) may include a sensing unit (740). The sensing unit (740) can detect the current state of the optical device (10B), such as the open / closed state of the optical device (10B), the position of the optical device (10B), the presence or absence of user contact, the orientation of the optical device (10B), and the acceleration / deceleration of the optical device (10B), and generate a sensing signal to control the operation of the optical device (10B). For example, if the optical device (10B) is in the form of a slide phone, it can sense whether the slide phone is open or closed. In addition, it can perform sensing functions related to whether power is supplied by the power supply unit (790) and whether an external device is connected to the interface unit (770).

[0126] The optical device (10B) may include an input / output unit (750). The input / output unit (750) may be configured to generate input or output related to sight, hearing, or touch. The input / output unit (750) may generate input data for controlling the operation of the optical device (10B) and may also output information processed by the optical device (10B).

[0127] The input / output unit (750) may include one or more of a keypad unit (751), a touch screen panel (752), a display module (753), and an audio output module (754). The keypad unit (751) may generate input data by keypad input. The touch screen panel (752) may convert a change in capacitance caused by a user's touch on a specific area of ​​the touch screen into an electrical input signal. The display module (753) may output an image captured by the camera (721). The display module (753) may include a plurality of pixels whose color changes according to an electrical signal. For example, the display module (753) may include at least one of a liquid crystal display, a thin film transistor-liquid crystal display, an organic light-emitting diode, a flexible display, and a 3D display. The sound output module (754) can output audio data received from the wireless communication unit (710) in call signal reception, call mode, recording mode, voice recognition mode, or broadcast reception mode, or output audio data stored in the memory unit (760).

[0128] The optical device (10B) may include a memory unit (760). A program for processing and controlling the control unit (780) may be stored in the memory unit (760). Additionally, the memory unit (760) may store one or more of input / output data, such as a phone book, messages, audio, still images, photos, and videos. The memory unit (760) may store images captured by the camera (721), such as photos or videos.

[0129] The optical device (10B) may include an interface section (770). The interface section (770) serves as a passage connecting to an external device connected to the optical device (10B). The interface section (770) may receive data from an external device, receive power and transmit it to each component inside the optical device (10B), or allow data inside the optical device (10B) to be transmitted to an external device. The interface section (770) may include one or more of a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, a port for connecting a device equipped with an identification module, an audio I / O (Input / Output) port, a video I / O (Input / Output) port, and an earphone port.

[0130] The optical device (10B) may include a control unit (780). The control unit (controller, 780) may control the overall operation of the optical device (10B). The control unit (780) may perform related control and processing for voice calls, data communication, video calls, etc. The control unit (780) may include a display control unit (781) that controls a display module (753), which is a display of the optical device (10B). The control unit (780) may include a camera control unit (782) that controls a camera module (10A). The control unit (780) may include a multimedia module (783) for multimedia playback. The multimedia module (783) may be provided within the control unit (180) or may be provided separately from the control unit (780). The control unit (780) may perform pattern recognition processing that can recognize handwriting input or drawing input performed on a touchscreen as characters and images, respectively.

[0131] The optical device (10B) may include a power supply unit (790). The power supply unit (790) may receive external power or internal power under the control of the control unit (780) and supply power necessary for the operation of each component.

[0133] Although embodiments of the present invention have been described above with reference to the attached drawings, those skilled in the art will understand that the present invention may be implemented in other specific forms without changing its technical concept or essential features. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive.

Claims

Claim 1 A camera module comprising: a base; a housing disposed on the base; a bobbin disposed within the housing; a coil and a magnet for moving the bobbin in the direction of the optical axis relative to the housing; a support member connecting the housing and the bobbin; and a shape memory alloy member for moving the housing in a direction perpendicular to the direction of the optical axis relative to the base, wherein the bobbin includes a groove formed on the outer surface of the bobbin, the support member includes a first fixing part fixed within the groove of the bobbin, and the support member moves together with the bobbin and the housing in a direction perpendicular to the direction of the optical axis. Claim 2 A camera module according to claim 1, wherein the housing includes a groove formed on the inner surface of the housing, and the support member includes a second fixing part fixed within the groove of the housing. Claim 3 In paragraph 2, the support member includes a connecting portion connecting the first fixing portion and the second fixing portion, and the connecting portion is formed with a width smaller than the width of the first fixing portion and the second fixing portion at the portion connecting the first fixing portion and the second fixing portion. Claim 4 In paragraph 3, the camera module wherein the width of the connecting portion is the length in a direction perpendicular to the longitudinal direction of the connecting portion. Claim 5 A camera module according to paragraph 3, wherein the connecting portion includes a portion whose width increases as it moves away from the first fixing portion and the second fixing portion, and the outer surface of the connecting portion includes a curved surface. Claim 6 In claim 1, the support member is a camera module arranged in a direction perpendicular to the optical axis direction. Claim 7 In paragraph 3, the groove of the bobbin extends from the upper surface of the bobbin, and the groove of the housing extends from the upper surface of the housing, forming a camera module. Claim 8 In paragraph 3, the groove of the bobbin includes a locking projection spaced apart by a width smaller than the width of the first fixing part so that the first fixing part is caught. Claim 9 In paragraph 3, the groove of the housing includes a locking projection spaced apart by a width smaller than the width of the second fixing part so that the second fixing part is caught. Claim 10 A camera module according to claim 1, wherein the support member supports the bobbin to move in the optical axis direction relative to the housing, the magnet is disposed on the bobbin, and the coil is disposed on the housing. Claim 11 A camera module according to claim 10, comprising a first substrate disposed on the base, wherein the shape memory alloy member is electrically connected to the first substrate. Claim 12 In claim 11, the shape memory alloy member comprises a first coupling portion coupled to the housing, a second coupling portion coupled to the first substrate, and a shape memory alloy wire connecting the first coupling portion and the second coupling portion, wherein the shape memory alloy wire changes in length when current is applied, in a camera module. Claim 13 In claim 12, the shape memory alloy member comprises a conductive wire connecting the first coupling part and the first substrate, and the shape memory alloy wire comprises a first shape memory alloy wire arranged in a first direction perpendicular to the optical axis direction and a second shape memory alloy wire arranged in a second direction perpendicular to the optical axis direction and the first direction, forming a camera module. Claim 14 A camera module according to claim 12, wherein the shape memory alloy wire comprises first to fourth shape memory alloy wires, and the first substrate comprises first to fourth terminals connected to each of the first to fourth shape memory alloy wires and a fifth terminal connected in common to the first to fourth shape memory alloy wires. Claim 15 A camera module according to claim 11, comprising a bearing disposed between the housing and the base or between the housing and the first substrate, which contacts the housing when the housing moves in a direction perpendicular to the optical axis direction. Claim 16 A camera module according to claim 15, comprising an elastic member coupled to the upper surface of the base and the upper surface of the housing, wherein the elastic member presses the housing in a direction toward the bearing. Claim 17 A camera module according to claim 16, comprising a second substrate disposed on the side of the base and electrically connected to the first substrate, wherein the elastic member comprises first and second elastic members spaced apart from each other, and the coil is electrically connected to the second substrate through the first and second elastic members. Claim 18 In claim 1, the support member is a camera module formed of an elastomer. Claim 19 A camera module comprising, in claim 1, a printed circuit board; an image sensor disposed on the printed circuit board; and a lens coupled to the bobbin. Claim 20 An optical device comprising: a main body; a camera module according to any one of claims 1 to 19 disposed on the main body; and a display disposed on the main body and outputting an image captured by the camera module. Claim 21 delete

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