Actuator device

Abstract

To provide an actuator device capable of achieving an OIS function by tilting a reflection member.SOLUTION: A first embodiment of the present invention provides an actuator device including a housing, a holder disposed in the housing, a reflective member disposed in the holder, a moving plate disposed between the housing and the holder, a mover rigid coupled to the holder, and a damper coupled to the mover rigid, wherein the mover rigid includes a protrusion coupled to the housing by the damper.SELECTED DRAWING: Figure 17

Description

[Technical Field]

[0001] This embodiment relates to an actuator device. [Background technology]

[0002] A camera device is a device that takes photographs or videos of a subject, and is attached to optical devices such as smartphones, drones, vehicles, etc.

[0003] In recent years, in order to improve the quality of images, camera devices have come to require features such as an Optical Image Stabilization (OIS) function that corrects image shake caused by user movement, an Auto Focus (AF) function that automatically adjusts the distance between the image sensor and the lens to align the focal length of the lens, and a zoom function that increases or decreases the magnification of distant subjects using a zoom lens.

[0004] Meanwhile, ultra-compact camera modules are built into portable devices such as smartphones, tablet PCs, and laptops, and these camera modules can perform autofocus (AF) functions by automatically adjusting the distance between the image sensor and the lens to adjust the focal length of the lens.

[0005] Furthermore, recent camera modules have been able to perform zooming functions, such as zooming up or zooming out, by increasing or decreasing the magnification of a distant object through a zoom lens.

[0006] Furthermore, in recent years, camera modules have adopted image stabilization (IS) technology to correct or prevent image shake caused by camera movement due to unstable fixtures or user movement.

[0007] Such image stabilization (IS) technologies include optical image stabilizer (OIS) technology and image stabilization technology that uses an image sensor.

[0008] OIS technology compensates for movement by changing the path of light, and image stabilization technology using image sensors compensates for movement using mechanical and electronic methods, with OIS technology being more widely adopted.

[0009] Meanwhile, camera modules use zoom actuators for their zooming functions, but the mechanical movement of the actuator generates friction torque when the lens moves, which causes technical issues such as reduced driving force, increased power consumption, or reduced control characteristics.

[0010] In particular, to achieve the best optical performance using multiple zoom lens groups in a camera module, the alignment between the multiple lens groups and between the multiple lens groups and the image sensor must be perfect. However, when decentering occurs (the spherical center between the lens groups deviates from the optical axis), lens tilt occurs (the lens tilts), or the central axis of the lens group and the image sensor is not aligned, the angle of view changes or focus shifts, adversely affecting image quality and resolution.

[0011] Meanwhile, when the separation distance in the area where friction occurs is increased to reduce friction torque resistance when the lens moves for zooming in a camera module, a technical contradiction occurs in that lens descent or lens tilt becomes more severe when zooming or reversing the zoom movement.

[0012] On the other hand, the higher the pixel count of an image sensor, the higher the resolution and the smaller the pixel size, but the smaller the pixel size, the less light it can receive at the same time. Therefore, the higher the pixel count of a camera, the slower the shutter speed in dark environments, making image blur caused by camera shake more severe.

[0013] For this reason, OIS function has recently become essential for capturing distortion-free images using high-pixel cameras during dark nighttime or video recording.

[0014] On the other hand, OIS technology is a method of correcting image quality by moving the camera lens or image sensor to correct the optical path. In particular, OIS technology uses a gyro sensor to detect camera movement and calculates the distance the lens or image sensor should move based on this.

[0015] For example, there are two OIS correction methods: lens movement and module tilting. The lens movement method moves only the lens inside the camera module to realign the center of the image sensor with the optical axis, while the module tilting method moves the entire module including the lens and image sensor.

[0016] In particular, the module tilting method has the advantage of having a wider correction range than the lens movement method, and minimizing image distortion because the focal length between the lens and the image sensor is fixed.

[0017] Meanwhile, the lens movement method uses a position recognition sensor, such as a Hall sensor, to detect the position and movement of the lens, while the module tilting method uses a photo reflector to detect the movement of the module.However, both methods use a gyro sensor to detect the movement of the camera user.

[0018] The OIS controller uses the data sensed by the gyro sensor to predict where the lens or module should move to compensate for the user's movements.

[0019] Recent technological trends demand ultra-slim and ultra-compact camera modules, but there is a problem that it is difficult to realize the OIS function used in general large cameras due to the space constraints for OIS drive in ultra-compact camera modules, and when OIS drive is applied, it is difficult to realize an ultra-slim and ultra-compact camera module.

[0020] In addition, with conventional OIS technology, the OIS driver is located on the side of the solid lens assembly within the limited size of the camera module, which limits the size of the lens that can be used with the OIS, making it difficult to ensure sufficient light intensity.

[0021] In particular, to achieve the best optical characteristics in a camera module, the alignment between lens groups must be good when implementing OIS by lens movement or module tilting. However, with conventional OIS technology, when descent occurs, where the spherical center between lens groups deviates from the optical axis, or tilt occurs, the angle of view changes or defocus occurs, which adversely affects image quality and resolution.

[0022] In addition, while conventional OIS technology allows for AF or Zoom to be achieved simultaneously with OIS drive, due to the spatial constraints of the camera module and the position of the drive unit in conventional OIS technology, the OIS magnet and the AF or Zoom magnet are placed close to each other, causing magnetic field interference and preventing normal OIS drive, resulting in problems such as decentering and tilting.

[0023] In addition, conventional OIS technology requires mechanical drive devices for lens movement and module tilting, resulting in complex structures and high power consumption.

[0024] However, the material described in any section herein merely provides background information for the present disclosure and may not constitute prior art. Summary of the Invention [Problem to be solved by the invention]

[0025] A first embodiment of the present invention seeks to provide an actuator device in which an OIS function is realized by tilting a reflective member.

[0026] Furthermore, an object of the present invention is to provide an actuator device that ensures stable driving performance of the moving part.

[0027] An object of the second embodiment of the present invention is to provide a lens assembly driver and a camera module including the same that can minimize the occurrence of descent and tilt conditions and produce the best optical characteristics through quick and accurate performance testing. [Means for solving the problem]

[0028] An actuator device according to a first embodiment of the present invention includes a housing; a holder disposed within the housing; a reflective member disposed in the holder; a moving plate disposed between the housing and the holder; a mover rigid coupled to the holder; and a damper coupled to the mover rigid; wherein the mover rigid may include a protrusion coupled to the housing by the damper.

[0029] The housing may include a groove in which at least a portion of the protrusion is disposed.

[0030] The groove in the housing may be open to the outside of the housing.

[0031] The protrusion of the mover rigid may include a first protruding region protruding from one side and a second protruding region protruding from the other side.

[0032] The groove of the housing may include a first groove in which at least a portion of the first protruding region is disposed and a second groove in which at least a portion of the second protruding region is disposed.

[0033] The protrusion may be located in a central region of the mover rigid.

[0034] The groove of the housing is larger than the protrusion of the mover rigid and can be separated from the protrusion in an initial state and when driven.

[0035] The groove of the housing and the protrusion of the mover rigid can come into contact with each other due to an external impact.

[0036] An actuator device according to a first embodiment of the present invention includes a housing; a holder disposed within the housing; a reflective member disposed in the holder; a moving plate disposed between the housing and the holder; a mover rigid coupled to the holder; and a damper coupled to the mover rigid; wherein the mover rigid may include a protrusion coupled to the housing by the damper.

[0037] An actuator device according to a first embodiment of the present invention includes a fixed part including a housing; a moving part that moves relative to the fixed part; a moving plate arranged between the fixed part and the moving part; and a damper arranged between the fixed part and the moving part; and the moving part can include a mover rigid that is bonded to the housing by the damper.

[0038] An actuator device according to a first embodiment of the present invention includes a fixed part; a moving part that moves relative to the fixed part; a moving plate that is arranged between the fixed part and the moving part; a first magnet that is arranged on the moving part and has a first surface; a second magnet that is arranged on the fixed part and has a second surface that faces the first surface; a drive part that tilts the moving part; and a damper that is arranged between the fixed part and the moving part, wherein the central axis of the first magnet is arranged eccentrically with the central axis of the moving plate in a direction perpendicular to the first surface, and the area of ​​the first surface of the first magnet may be different from the area of ​​the second surface of the second magnet.

[0039] The fixed part includes a housing, the moving part includes a holder disposed in the housing, and a mover rigid coupled to the holder and on which the first magnet is disposed, and the damper can be disposed between the mover rigid and the housing.

[0040] The damper may be coupled to the mover rigid and the housing.

[0041] An actuator device according to a first embodiment of the present invention may include a housing; a holder disposed within the housing; a reflective member disposed in the holder; a moving plate disposed between the housing and the holder; a mover rigid coupled to the holder; and a damper connecting the mover rigid and the housing.

[0042] The first portion of the housing may be disposed between the mover rigid and the moving plate.

[0043] The damper may be located at least one of an upper portion and a lower portion of the first portion of the housing.

[0044] The actuator device includes a first magnet arranged on the mover rigid; and a second magnet arranged on the housing and generating a repulsive force with the first magnet, and at least a portion of the second magnet is arranged between the first magnet and the moving plate and can be arranged on the opposite side of the moving plate with respect to the first portion of the housing.

[0045] The mover rigid includes a main body portion positioned on the opposite side of the moving plate based on the first portion of the housing, a connecting portion extending from the main body portion and connecting with the holder, and a protrusion protruding from the main body portion, and the damper can connect the protrusion of the mover rigid to the housing.

[0046] The housing includes a groove, and at least a portion of the protrusion of the mover rigid is disposed in the groove of the housing, and at least a portion of the damper can be disposed in the groove of the housing between the protrusion of the mover rigid and the housing.

[0047] The groove of the housing may include a first groove portion and a second groove portion recessed from the first groove portion, and at least a portion of the damper may be disposed in the second groove portion of the housing.

[0048] The protrusion of the mover rigid may include a first protrusion formed on an upper surface of the body of the mover rigid, and a second protrusion formed on a lower surface of the body of the mover rigid.

[0049] The housing includes a first surface facing the upper surface of the main body portion of the mover rigid and a second surface facing the lower surface of the main body portion of the mover rigid, and the housing includes a first groove formed on the first surface of the housing and a second groove formed on the second surface of the housing, and at least a portion of the first protrusion of the mover rigid is arranged in the first groove of the housing, and at least a portion of the second protrusion of the mover rigid is arranged in the second groove of the housing.

[0050] The housing includes two protrusions formed on the second surface of the housing, and the two protrusions are spaced apart at an equal distance from the second groove, so that when the body portion of the mover rigid moves downward, the body portion of the mover rigid can come into contact with the two protrusions of the housing.

[0051] The mover rigid includes an adhesive that fixes the mover rigid to the holder, the holder includes a groove and a plurality of protrusions formed in the groove, at least a portion of the coupling portion of the mover rigid is inserted into the groove, and at least a portion of the adhesive can be positioned between the plurality of protrusions of the holder.

[0052] The actuator device may include a third magnet and a first coil that tilt the holder about a first axis; and a fourth magnet and a second coil that tilt the holder about a second axis perpendicular to the first axis.

[0053] The damper may be viscous. The housing may include a hole, and the mover rigid may be formed as a separate member from the holder and may be coupled to the holder by passing through the hole of the housing.

[0054] The mover rigid may include a plate coupled to the housing and covering the mover rigid, the housing including a groove in which an adhesive is disposed to fix the plate to the housing.

[0055] The mover rigid may be made of a non-magnetic metal. A camera device according to a first embodiment of the present invention may include a printed circuit board; an image sensor disposed on the printed circuit board; an actuator device; and a lens disposed in an optical path formed by the reflective member of the actuator device and the image sensor.

[0056] The optical device according to the first embodiment of the present invention may include a main body; a camera device disposed on the main body; and a display disposed on the main body and configured to output at least one of a video and an image captured by the camera device.

[0057] The first embodiment of the present invention may include a housing including a first portion; a holder disposed within the housing; a reflective member disposed in the holder; a moving plate disposed between the first portion of the housing and the holder; a mover rigid, at least a portion of which is disposed on the opposite side of the moving plate with respect to the first portion of the housing and which is coupled to the holder; a first magnet disposed on the mover rigid; a second magnet disposed in the housing and which generates a repulsive force with the first magnet; and a viscous damper disposed between the mover rigid and the housing.

[0058] The mover rigid includes a main body portion disposed on the opposite side of the moving plate with respect to the first portion of the housing, a connecting portion extending from the main body portion and connecting with the holder, and a protrusion protruding from the main body portion; and the damper can connect the protrusion of the mover rigid to the housing.

[0059] The coupling portion may include two coupling portions protruding from both sides of the body portion, and the protrusion portion may include two protrusions protruding from above and below the body portion.

[0060] The device may include grease disposed between the moving plate and the housing.

[0061] An actuator device according to a first embodiment of the present invention may include a housing including a first portion; a holder disposed within the housing; a reflective member disposed in the holder; a moving plate disposed between the first portion of the housing and the holder; a mover rigid, at least a portion of which is disposed on the opposite side of the moving plate relative to the first portion of the housing, coupled to the holder, and pressurizing the holder toward the moving plate; a magnet and a coil that tilt the holder; and a damper disposed on the mover rigid.

[0062] A lens driving device according to a second embodiment of the present invention includes a housing; a lens assembly disposed within the housing and including a lens barrel; a first driving unit disposed in the lens assembly; and a second driving unit facing the first driving unit, and an inclined surface having different heights from one end to the other end is disposed on a side of the lens barrel. [Effects of the Invention]

[0063] According to the first embodiment of the present invention, stable driving performance of the moving part can be ensured.

[0064] Furthermore, applying a damper can ensure sufficient phase margin and improve FRA characteristics.

[0065] More specifically, by applying a gel bond that acts as a damper between the housing and the mover rigid, the gain value is maintained while a phase margin is secured, thereby improving the responsiveness of the actuator.

[0066] The second embodiment of the present invention has the advantage that the optical performance of the lens can be easily measured through the inclined surface during the assembly process of the camera module, and the internal structure of the module can be easily maintained during use. [Brief explanation of the drawings]

[0067] [Figure 1] 1 is a perspective view of a camera device according to a first embodiment of the present invention. [Figure 2] 1 is a bottom perspective view of a camera device according to a first embodiment of the present invention. [Figure 3] 1 is a plan view of a camera device according to a first embodiment of the present invention. [Figure 4] FIG. 4 is a cross-sectional view taken along line AA in FIG. 3. [Figure 5] FIG. 4 is a cross-sectional view taken along the line BB in FIG. 3. [Figure 6] FIG. 4 is a cross-sectional view taken along line CC in FIG. [Figure 7] 1 is an exploded perspective view of a camera device according to a first embodiment of the present invention. [Figure 8] 1 is a perspective view of a camera device according to a first embodiment of the present invention, with a cover member omitted. [Figure 9] 1 is a perspective view of a reflecting member driving device according to a first embodiment of the present invention. [Figure 10] 1 is an exploded perspective view of a reflecting member driving device according to a first embodiment of the present invention. [Figure 11] FIG. 2 is an exploded perspective view of the bottom surface of the reflecting member driving device according to the first embodiment of the present invention. [Figure 12] 1 is a diagram illustrating a structure related to a moving plate of a reflecting member driving device according to a first embodiment of the present invention. [Figure 13] 1 is a diagram illustrating a structure related to a moving plate of a reflecting member driving device according to a first embodiment of the present invention. [Figure 14] 1 is a perspective view of a reflecting member driving device according to a first embodiment of the present invention, with components such as a moving unit omitted. [Figure 15] 15 is a perspective view of the reflecting member driving device of FIG. 14 with components such as a substrate omitted. FIG. [Figure 16] 1 is a perspective view illustrating a fixing portion and related configuration of a reflecting member driving device according to a first embodiment of the present invention. [Figure 17] 1 is a perspective view illustrating a state in which a moving part is disposed on a fixed part in a reflecting member driving device according to a first embodiment of the present invention. FIG. [Figure 18] 1 is an exploded perspective view illustrating the relative shapes of a mover rigid and a fixed portion of a reflecting member driving device according to a first embodiment of the present invention. FIG. [Figure 19] 4 is a perspective view illustrating the arrangement of a second magnet of a fixing portion of the reflecting member driving device according to the first embodiment of the present invention. FIG. [Figure 20] 1 is a perspective view illustrating a coupled state of a holder and a mover rigid of a reflecting member driving device according to a first embodiment of the present invention. FIG. [Figure 21] 1 is a front view illustrating a holder of a reflecting member driving device according to a first embodiment of the present invention. [Figure 22] 1 is a perspective view illustrating a mover rigid, a first magnet, and a second magnet of a reflecting member driving device according to a first embodiment of the present invention. FIG. [Figure 23] 1 is a perspective view illustrating a first magnet, a second magnet, and a driving unit of a reflecting member driving device according to a first embodiment of the present invention. [Figure 24] 1 is a perspective view illustrating a first magnet, a second magnet, and a drive magnet of a reflecting member driving device according to a first embodiment of the present invention. [Figure 25] 1 is a side view illustrating a first magnet, a second magnet, and a drive magnet of a reflecting member driving device according to a first embodiment of the present invention. FIG. [Figure 26] 1 is a cross-sectional view of a reflecting member driving device according to a first embodiment of the present invention. [Figure 27] FIG. 10 is a cross-sectional perspective view of a reflection member driving device according to a modified example. [Figure 28] 1A and 1B are a perspective view and a rear side view illustrating a first magnet and a second magnet of a reflecting member driving device according to a first embodiment of the present invention. [Figure 29]1 is a perspective view illustrating a state in which a moving plate is disposed in a moving part of a reflecting member driving device according to a first embodiment of the present invention. [Figure 30] 4 is a diagram illustrating tilting of the reflecting member driving device around the x-axis according to the first embodiment of the present invention; [Figure 31] 4 is a diagram illustrating tilting of the reflecting member driving device around the x-axis according to the first embodiment of the present invention; [Figure 32] 4 is a diagram illustrating tilting of the reflective member driving device around the y-axis according to the first embodiment of the present invention; [Figure 33] 4 is a diagram illustrating tilting of the reflective member driving device around the y-axis according to the first embodiment of the present invention; [Figure 34] 4 is a diagram illustrating tilting of the reflective member driving device around the y-axis according to the first embodiment of the present invention; [Figure 35] 1 is a perspective view of a lens driving device according to a first embodiment of the present invention. [Figure 36] 1 is a perspective view of a lens driving device according to a first embodiment of the present invention, with a portion of the configuration thereof omitted. [Figure 37] 37 is a perspective view of the lens driving device in the state shown in FIG. 36, seen from another direction. FIG. [Figure 38] 1 is a perspective view of a lens driving device according to a first embodiment of the present invention, with a portion of the configuration thereof omitted. [Figure 39] 1 is a perspective view of a lens driving device according to a first embodiment of the present invention, with components such as a substrate and coils omitted. [Figure 40] FIG. 40 is a perspective view of the lens driving device shown in FIG. 39, from which the first lens and related components are omitted. [Figure 41] 1A and 1B are a perspective view and a partially enlarged view of a partial configuration of a lens driving device according to a first embodiment of the present invention; [Figure 42] 4 is a diagram illustrating the arrangement of coils and sensors in the lens driving device according to the first embodiment of the present invention. [Figure 43]FIG. 40 is a perspective view of the lens driving device shown in FIG. 39 with the second housing omitted. [Figure 44] FIG. 44 is a perspective view of the lens driving device in the state shown in FIG. 43 with the guide rails omitted. [Figure 45] 1 is an enlarged view of a portion of the configuration of a lens driving device according to a first embodiment of the present invention. [Figure 46] 1 is a perspective view of a first moving section, a second moving section, and related components of a lens driving device according to a first embodiment of the present invention. [Figure 47] 2 is a perspective view of a second moving unit and related components of the lens driving device according to the first embodiment of the present invention. FIG. [Figure 48] 1 is an exploded perspective view of a lens driving device according to a first embodiment of the present invention. [Figure 49] FIG. 2 is a perspective view of a second housing of the lens driving device according to the first embodiment of the present invention. [Figure 50] 1 is an exploded perspective view of a partial configuration of a lens driving device according to a first embodiment of the present invention. [Figure 51] 1 is an exploded perspective view of a partial configuration of a lens driving device according to a first embodiment of the present invention. [Figure 52] 1 is a cross-sectional view of a lens driving device according to a first embodiment of the present invention. [Figure 53] 1 is a diagram for explaining how a zoom function and an autofocus function are realized in a lens driving device according to a first embodiment of the present invention. [Figure 54] 1 is a diagram for explaining how a zoom function and an autofocus function are realized in a lens driving device according to a first embodiment of the present invention. [Figure 55] 1 is a diagram for explaining how a zoom function and an autofocus function are realized in a lens driving device according to a first embodiment of the present invention. [Figure 56] 1 is a perspective view of a partial configuration of a camera device according to a first embodiment of the present invention. [Figure 57] 1 is an exploded perspective view of an image sensor, a filter, and related components of a camera device according to a first embodiment of the present invention. [Figure 58]1 is a perspective view of the front surface of an optical apparatus according to a first embodiment of the present invention. [Figure 59] FIG. 2 is a perspective view of the rear surface of the optical apparatus according to the first embodiment of the present invention. [Figure 60] FIG. 10 is a perspective view of a camera module according to a second embodiment of the present invention. [Figure 61] FIG. 61 is an exploded perspective view of the cover in FIG. 60. [Figure 62] FIG. 10 is a plan view illustrating one side of a camera module according to a second embodiment of the present invention. [Figure 63] FIG. 63 is a cross-sectional view illustrating the line BB' in FIG. 62. [Figure 64] FIG. 63 is a cross-sectional view illustrating the line AA' in FIG. 62. [Figure 65] FIG. 10 is a first exploded perspective view of a camera module according to a second embodiment of the present invention. [Figure 66] This is a drawing showing Figure 63 from another angle. [Figure 67] FIG. 10 is a second exploded perspective view of the camera module according to the second embodiment of the present invention. [Figure 68] This is a drawing showing Figure 67 from another angle. [Figure 69] FIG. 10 is a perspective view of a guide portion according to a second embodiment of the present invention. [Figure 70] FIG. 10 is an exploded perspective view of the second lens group and the third lens group according to the second example of the present invention. [Figure 71] FIG. 10 is a perspective view of a substrate according to a second embodiment of the present invention. [Figure 72] 10 is a perspective view illustrating an installation state of a second lens assembly and a third lens assembly in a housing according to a second embodiment of the present invention. FIG. [Figure 73] FIG. 10 is a cross-sectional view of a protrusion according to a second embodiment of the present invention. [Figure 74] 10 is a view illustrating a modified example of the formation of an inclined surface in a camera module according to a second embodiment of the present invention. [Figure 75] 10 is a view illustrating a modified example of the formation of an inclined surface in a camera module according to a second embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0068] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0069] However, the technical concept of the present invention is not limited to the described embodiments, but can be realized in various different forms, and one or more of the components of the embodiments can be selectively combined or substituted and used within the scope of the technical concept of the present invention.

[0070] Furthermore, unless otherwise clearly defined and described, terms (including technical and scientific terms) used in the embodiments of the present invention may be interpreted as meanings that are commonly understood by a person of ordinary skill in the art to which the present invention belongs, and commonly used terms such as predefined terms may be interpreted in light of the contextual meaning of the relevant art.

[0071] Furthermore, the terms used in the examples of the present invention are intended to explain the examples and are not intended to limit the present invention.

[0072] In this specification, unless otherwise specified, the singular form can also include the plural form, and when it is stated as "A and (and) at least one (or more) of B and C," it can include one or more of all combinations of A, B, and C.

[0073] Furthermore, when describing components of the embodiments of the present invention, terms such as first, second, A, B, a, b, etc. are used only to distinguish the component from other components, and the terms do not limit the nature, order, or sequence of the corresponding components.

[0074] It should be noted that when a component is described as being "coupled," "coupled," or "connected" to another component, it includes not only the case where the component is directly "coupled," "coupled," or "connected" to the other component, but also the case where the component is "coupled," "coupled," or "connected" by yet another component between the component and the other component.

[0075] Furthermore, when it is stated that something is formed or disposed "above (above)" or "below (below)" a component, "above (above)" or "below (below)" includes not only the case where two components are in direct contact with each other, but also the case where one or more additional components are formed or disposed between the two components. Furthermore, when it is expressed as "above (above)" or "below (below)," it can include not only the meaning of the upper direction but also the meaning of the lower direction based on one component.

[0076] The "optical axis direction" used below is defined as the optical axis direction of each lens group coupled to the lens drive device.

[0077] A reflective member driving device according to a first embodiment of the present invention will be described below with reference to the drawings.

[0078] 9 is a perspective view of a reflecting member driving device according to a first embodiment of the present invention, FIG. 10 is an exploded perspective view of a reflecting member driving device according to a first embodiment of the present invention, FIG. 11 is an exploded perspective view of the bottom of a reflecting member driving device according to a first embodiment of the present invention, FIGS. 12 and 13 are drawings for explaining a structure relating to a moving plate of a reflecting member driving device according to a first embodiment of the present invention, FIG. 14 is a perspective view of a reflecting member driving device according to a first embodiment of the present invention, with components such as a moving part omitted, and FIG. 15 is a perspective view of the reflecting member driving device of FIG. 14, with components such as a board omitted, 16 is a perspective view illustrating the fixed part and related configuration of the reflecting member driving device according to the first embodiment of the present invention, FIG. 17 is a perspective view illustrating the state in which the moving part is arranged on the fixed part in the reflecting member driving device according to the first embodiment of the present invention, FIG. 18 is an exploded perspective view illustrating the relative shape of the mover rigid and the fixed part of the reflecting member driving device according to the first embodiment of the present invention, FIG. 19 is a perspective view illustrating the arrangement state of the second magnet of the fixed part of the reflecting member driving device according to the first embodiment of the present invention, and FIG. 20 is a perspective view illustrating the holder and mover rigid of the reflecting member driving device according to the first embodiment of the present invention. 21 is a front view illustrating a holder of the reflecting member driving device according to the first embodiment of the present invention; FIG. 22 is a perspective view illustrating the mover rigid, first magnet, and second magnet of the reflecting member driving device according to the first embodiment of the present invention; FIG. 23 is a perspective view illustrating the first magnet, second magnet, and driving unit of the reflecting member driving device according to the first embodiment of the present invention; FIG. 24 is a perspective view illustrating the first magnet, second magnet, and driving magnet of the reflecting member driving device according to the first embodiment of the present invention; 2 is a side view illustrating the first magnet, second magnet and drive magnet of the reflective member driving device according to the first embodiment of the present invention; FIG. 26 is a cross-sectional view of the reflective member driving device according to the first embodiment of the present invention; FIG. 27 is a cross-sectional oblique view of a reflective member driving device according to a modified example; FIG. 28 is an oblique view (a) and a rear side view (b) illustrating the first magnet and second magnet of the reflective member driving device according to the first embodiment of the present invention; and FIG. 29 is an oblique view illustrating the state in which a moving plate is arranged in the moving part of the reflective member driving device according to the first embodiment of the present invention.

[0079] The reflective member driving device 1000 can perform an optical image stabilization (OIS) function. The reflective member driving device 1000 can perform an image stabilization function. The reflective member driving device 1000 can move the reflective member 1220. The reflective member driving device 1000 can tilt the reflective member 1220. The reflective member driving device 1000 can tilt the reflective member 1220 around two axes. The reflective member driving device 1000 can tilt the reflective member 1220 around an x-axis and a y-axis. The x-axis and y-axis may be perpendicular to each other.

[0080] The reflective member driving device 1000 may be a reflective member actuator. The reflective member driving device 1000 may be an OIS actuator. The reflective member driving device 1000 may be an OIS driving device. The reflective member driving device 1000 may be a prism driving device. The reflective member driving device 1000 may be an actuator. The reflective member driving device 1000 may be an actuator device. The reflective member driving device 1000 may be an actuator driving device. The reflective member driving device 1000 may be a tilting device.

[0081] The reflective member driving device 1000 may include a fixed part 1100. The fixed part 1100 may be a part that is fixed relative to the moving part 1200 during movement. The fixed part 1100 may accommodate at least a part of the moving part 1200. The fixed part 1100 may be disposed outside the moving part 1200.

[0082] The reflective member driving device 1000 may include a housing 1110. The fixing part 110 may include a housing 1110. The housing 1110 may be disposed outside the holder 1210. The housing 1110 may accommodate at least a portion of the holder 1210. The housing 1110 may include an opening or hole in an upper plate and one of the side plates to ensure a light path. The housing 1110 may include an upper plate, a lower plate, and a plurality of side plates.

[0083] The housing 1110 may include a first portion 1111. The first portion 1111 may be formed on a side plate of the housing 1110. The moving plate 1300 may be disposed in the first portion 1111. The first portion 1111 may be disposed between the holder 1210 and the mover rigid 1230. The first portion 1111 may be disposed between the mover rigid 1230 and the moving plate 1300. The second magnet 1120 may be disposed in the first portion 1111. The moving plate 1300 may be disposed on one side of the first portion 1111, and the second magnet 1120 may be disposed on the other side. A portion of the housing 1110 may be disposed between the moving plate 1300 and the mover rigid 1230.

[0084] The housing 1110 may include a second portion 1112. The second portion 1112 may be disposed on top of the holder 1210. The second portion 1112 may come into contact with the holder 1210 when the holder 1210 moves upward. The second portion 1112 may overlap with the holder 1210 in the direction of movement of the holder 1210. The second portion 1112 may be an upper plate of the housing 1110.

[0085] The housing 1110 may include a third portion 1113. The third portion 1113 may be disposed below the holder 1210. The third portion 1113 may come into contact with the holder 1210 when the holder 1210 moves downward. The third portion 1113 may overlap with the holder 1210 in the movement direction. The third portion 1113 may be a bottom plate of the housing 1110.

[0086] The housing 1110 may include a hole 1114. The hole 1114 may be a mover rigid passage hole. The hole 1114 may be formed in a side plate of the housing 1110. The hole 1114 may be formed in the first portion 1111 of the housing 1110. The mover rigid 1230 may be disposed in the hole 1114. The mover rigid 1230 may be disposed to pass through the hole 1114. The hole 1114 may be formed larger than the movement space of the mover rigid 1230 so as not to interfere with the mover rigid 1230. The housing 1110 may include two holes 1114 into which the mover rigid 1230 is inserted.

[0087] The housing 1110 may include a groove 1115. The groove 1115 may be a moving plate first protrusion receiving groove. The first protrusion 1310 of the moving plate 1300 may be disposed in the groove 1115. The groove 1115 may receive at least a portion of the moving plate 1300. The groove 1115 may restrict movement of the first protrusion 1310 of the moving plate 1300 except for rotation. The groove 1115 may include an inclined surface that contacts the first protrusion 1310 of the moving plate 1300. The inclined surface may include multiple inclined surfaces.

[0088] The housing 1110 may include a plurality of grooves 1115 in which the plurality of first protrusions 1310 are disposed. The plurality of grooves 1115 of the housing 1110 may include a first groove 1115-1 that makes four-point contact with one of the plurality of first protrusions 1310, and a second groove 1115-2 that makes two-point contact with another of the plurality of first protrusions 1310.

[0089] The groove 1115 may include a first groove 1115-1. The first groove 1115-1 may be a four-point contact groove. The first groove 1115-1 may contact one of the two first protrusions 1310 of the moving plate 1300 at four points. As a result, the first groove 1115-1 of the housing 1110 may restrict the movement of one of the first protrusions 1310 of the moving plate 1300 in four directions (up, down, left, and right) except for rotation.

[0090] The groove 1115 may include a second groove 1115-2. The second groove 1115-2 may be a two-point contact groove. The second groove 1115-2 may contact the remaining one of the two first protrusions 1310 of the moving plate 1300 at two points. This allows the second groove 1115-2 of the housing 1110 to restrict movement of the remaining one of the first protrusions 1310 of the moving plate 1300 in two directions. For example, the second groove 1115-2 of the housing 1110 may restrict movement of the first protrusion 1310 of the moving plate 1300 in the up-down direction but not in the left-right direction.

[0091] The housing 1110 may include a protrusion 1116. The protrusion 1116 may be coupled to the lens driving device 2000. The protrusion 1116 may be formed on a side plate of the housing 1110. The protrusion 1116 may be formed on a side of the housing 1110 facing the lens driving device 2000. The protrusion 1116 may have a trapezoidal cross section. The protrusion 1116 may be coupled to the housing 2110 of the lens driving device 2000. The protrusion 1116 may be inserted into a first groove 2111 of the housing 2110 of the lens driving device 2000. The protrusion 1116 may be coupled to the housing 2110 of the lens driving device 2000 with an adhesive.

[0092] The housing 1110 may include a protrusion 1117. The protrusion 1117 may be coupled to the lens driving device 2000. The protrusion 1117 may be formed on a side plate of the housing 1110. The protrusion 1117 may be formed on a side of the housing 1110 facing the lens driving device 2000. The protrusion 1117 may have a circular cross section. The protrusion 1117 may be coupled to the housing 2110 of the lens driving device 2000. The protrusion 1117 may be inserted into the second groove 2112 of the housing 2110 of the lens driving device 2000. The protrusion 1117 may be coupled to the housing 2110 of the lens driving device 2000 with an adhesive.

[0093] The housing 1110 may include a protrusion 1118. The protrusion 1118 may be a mover rigid contact protrusion. The protrusion 1118 may be formed on a second surface of the housing 1110. The protrusion 1118 may contact the mover rigid 1230. The protrusion 1118 may be formed on an inner circumferential surface of a hole 1114 of the housing 1110 through which the mover rigid 1230 passes. The protrusion 1118 may be formed to contact at least one of the bottom surface and the top surface of the mover rigid 1230 when the mover rigid 1230 moves. The protrusion 1118 may prevent the mover rigid 1230 from shifting too far from its original position and becoming detached.

[0094] The protrusion 1118 may include multiple protrusions. The protrusion 1118 may include two protrusions. The two protrusions may be spaced apart the same distance as a second groove disposed below the groove 1119 of the housing 1110. When the body portion of the mover rigid 1230 moves downward, the body portion of the mover rigid 1230 may come into contact with the two protrusions 1118 of the housing 1110.

[0095] The housing 1110 may include a groove 1119. At least a portion of the protrusion 1231 may be disposed in the groove 1119. A portion of the protrusion 1231 may be disposed in the groove 1119. The groove 1119 may be open to the outside of the housing 1110. The groove 1119 may be larger than the protrusion 1231 of the mover rigid 1230. The groove 1119 may be spaced apart from the protrusion 1231 of the mover rigid 1230. In an initial state in which no power is applied to the driver 1400, the groove 1119 may be spaced apart from the protrusion 1231 of the mover rigid 1230. Even when power is applied to the driver 1400 and the driver 1400 is driven, the groove 1119 may be spaced apart from the protrusion 1231 of the mover rigid 1230. The groove 1119 of the housing 1110 and the protrusion 1231 of the mover rigid 1230 may come into contact with each other due to an external impact. That is, the groove 1119 of the housing 1110 and the protrusion 1231 of the mover rigid 1230 do not come into contact with each other within the normal driving range of the mover rigid 1230, but may come into contact with each other when the normal driving range is deviated from by an impact. The groove 1119 of the housing 1110 and the protrusion 1231 of the mover rigid 1230 can function as a stopper when an impact occurs.

[0096] The groove 1119 may include a first groove portion and a second groove portion recessed from the first groove portion. The groove 1119 may be formed as a two-stage groove. The groove 1119 may have a double groove shape. The damper 1500 may be disposed in the second groove portion. The second groove portion may increase the contact area between the damper 1500 and the housing 1110. The second groove portion may prevent the damper 1500 from moving.

[0097] The groove 1119 may include a plurality of grooves. The groove 1119 may include a first groove in which at least a portion of the first protruding region of the mover rigid 1230 is disposed, and a second groove in which at least a portion of the second protruding region is disposed. The housing 1110 may include a first surface that faces the upper surface of the main body of the mover rigid 1230. The housing 1110 may include a second surface that faces the lower surface of the main body of the mover rigid 1230. The housing 1110 may include a first groove formed in the first surface of the housing 1110 and a second groove formed in the second surface of the housing 1110.

[0098] The reflection member driving device 1000 may include a second magnet 1120. The fixed part 1100 may include the second magnet 1120. The second magnet 1120 may be disposed in the fixed part 1100. The second magnet 1120 may be a second repulsive magnet. The second magnet 1120 may be disposed in the housing 1110. The second magnet 1120 may be disposed in the first part 1111 of the housing 1110. The second magnet 1120 may be disposed on the opposite side of the moving plate 1300 with respect to the first part 1111 of the housing 1110. The second magnet 1120 may be disposed between the first magnet 1240 and the moving plate 1300. The second magnet 1120 may be disposed to face the first magnet 1240. A repulsive force may be generated between the second magnet 1120 and the first magnet 1240. The second magnet 1120 may be arranged so as to generate a repulsive force with the first magnet 1240. The second magnet 1120 may be arranged so that the same polarities face the first magnet 1240. The second magnet 1120 may push the first magnet 1240.

[0099] At least a portion of the second magnet 1120 may be disposed between the first magnet 1240 and the moving plate 1300. The second magnet 1120 may be disposed between the first magnet 1240 and the moving plate 1300. The center of the second magnet 1120 may be disposed at the same height as the center of the first magnet 1240.

[0100] In the first embodiment of the present invention, the driving unit 1400 can tilt the moving unit 1200 based on the mutually perpendicular x-axis and y-axis of the moving plate 1300. In this case, the horizontal axis passing through the center of the second magnet 1120 in the direction of the y-axis may be disposed eccentrically with the x-axis of the moving plate 1300. The horizontal axis may be parallel to the x-axis.

[0101] The center of the second magnet 1120 may not be eccentric with the y-axis in a direction passing through the x-axis. When viewed in a direction from the moving plate 1300 toward the first magnet 1240, the center of the second magnet 1120 may be disposed to coincide with the y-axis. The center of the second magnet 1120 may be disposed at the same height as the center of the first magnet 1240. The center of the second magnet 1120 may be disposed at the same height as the center of the first magnet 1240. The center of gravity of the second magnet 1120 may be disposed at the same height as the center of gravity of the first magnet 1240.

[0102] The second magnet 1120 may include a second face disposed opposite the first face of the second magnet 1120. The first magnet 1240 may include a first face facing the second face of the second magnet 1120. The first face of the first magnet 1240 may have the same polarity as the second face of the second magnet 1120.

[0103] The second magnet 1120 may be arranged so as not to overlap with the first drive magnet 1411 in the direction in which the first surface of the first drive magnet 1411 faces. The second magnet 1120 may be arranged so as not to overlap with the first drive magnet 1411 in the direction in which the first surface of the second magnet 1120 faces.

[0104] The reflective member driving device 1000 may include a substrate 1130. The fixed part 1100 may include a substrate 1130. The substrate 1130 may be a flexible printed circuit board (FPCB). The substrate 1130 may be a flexible printed circuit board. The substrate 1130 may be disposed in the housing 1110.

[0105] The reflective member driving device 1000 may include a suspension (SUS) 1140. The fixing part 1100 may include the suspension 1140. The suspension 1140 may be disposed on the substrate 1130. The suspension 1140 may be disposed on the outer surface of the substrate 1130. The suspension 1140 may reinforce the strength of the substrate 1130.

[0106] The reflective member driving device 1000 may include a gyro sensor 1150. The fixed part 1100 may include the gyro sensor 1150. The gyro sensor 1150 may detect shaking of the camera device 10. The shaking detected by the gyro sensor 1150 may be offset through an image stabilization function. The gyro sensor 1150 may be disposed on the substrate 1130. The gyro sensor 1150 may be disposed on the outer surface of the substrate 1130.

[0107] The reflective member driving device 1000 may include a plate 1160. The fixing part 1100 may include the plate 1160. The plate 1160 may be coupled to the housing 1110. The plate 1600 may cover the mover rigid 1230. The plate 1600 may cover the mover rigid 1230. The plate 1160 may be arranged to cover an opened portion of the housing 1110. The plate 1160 may be arranged to close the opened front of the housing 1110. The plate 1160 may be formed of a metal plate. The housing 1110 may include a groove in which an adhesive is disposed to fix the plate 1160 to the housing 1110.

[0108] The reflective member driving device 1000 may include a driver IC 1170. The fixed unit 1100 may include the driver IC 1170. The driver IC 1170 may be disposed on the substrate 1130. The driver IC 1170 may be electrically connected to the first coil 1412 and the second coil 1422. The driver IC 1170 may supply current to the first coil 1412 and the second coil 1422. The driver IC 1170 may control at least one of the voltage and the current applied to the first coil 1412 and the second coil 1422, respectively. The driver IC 1170 may be electrically connected to the Hall sensors 1413 and 1423. The driver IC 1170 may feedback-control the voltage and the current applied to the first coil 1412 and the second coil 1422 based on the position of the reflective member 1220 sensed by the Hall sensors 1413 and 1423.

[0109] The reflective member driving device 1000 may include a moving unit 1200. The moving unit 1200 may be a moving unit. The moving unit 1200 may be a moving unit. The moving unit 1200 may be a movable unit. The moving unit 1200 may be movable relative to the fixed unit 1100. The moving unit 1200 may be tiltable relative to the fixed unit 1100. The moving unit 1200 may be disposed within the fixed unit 1100. At least a portion of the moving unit 1200 may be separated from the fixed unit 1100.

[0110] In the first embodiment of the present invention, in an initial state where no current is applied to the driving part 1400, the moving part 1200 can come into contact with the fixed part 1100.

[0111] The reflective member driving device 1000 may include a holder 1210. The moving unit 1200 may include a holder 1210. The holder 1210 may be disposed within the housing 1110. The holder 1210 may be movable relative to the housing 1110. The holder 1210 may be tiltable relative to the housing 1110. At least a portion of the holder 1210 may be separated from the housing 1110. The holder 1210 may be in contact with the housing 1110.

[0112] In the first embodiment of the present invention, the holder 1210 can be moved between the second portion 1112 and the third portion 1113 of the housing 1110 by a first drive unit 1410 . In an initial state where no current is applied to the first actuator 1410, the holder 1210 may be in contact with the housing 1110. In the initial state, the holder 1210 may be in contact with the inner surface of the housing 1110 adjacent to the incident surface of the reflective member 1220. When a current is applied to the actuator 1400, the holder 1210 moves away from the inner surface of the housing 1110 and tilts around the first axis of the moving plate 1300.

[0113] The holder 1210 may include a groove 1211. The groove 1211 may be a moving plate second protrusion receiving groove. The second protrusion 1320 of the moving plate 1300 may be disposed in the groove 1211. The groove 1211 may receive at least a portion of the moving plate 1300. The groove 1211 may restrict movement of the second protrusion 1320 of the moving plate 1300 except for rotation. The groove 1211 may include an inclined surface that contacts the second protrusion 1320 of the moving plate 1300. The inclined surface may include a plurality of inclined surfaces.

[0114] The holder 1210 may include a plurality of grooves 1211 in which the plurality of second protrusions 1320 are disposed. The plurality of grooves 1211 of the holder 1210 may include a first groove 1211-1 that makes four-point contact with one of the plurality of second protrusions 1320, and a second groove 1211-2 that makes two-point contact with another of the plurality of second protrusions 1320.

[0115] The groove 1211 may include a first groove 1211-1. The first groove 1211-1 may be a four-point contact groove. The first groove 1211-1 may contact one of the two second protrusions 1320 of the moving plate 1300 at four points. As a result, the first groove 1211-1 of the holder 1210 may restrict the movement of one of the second protrusions 1320 of the moving plate 1300 in four directions (up, down, left, and right) except for rotation.

[0116] The groove 1211 may include a second groove 1211-2. The second groove 1211-2 may be a two-point contact groove. The second groove 1211-2 may contact the remaining one of the two second protrusions 1320 of the moving plate 1300 at two points. This allows the second groove 1211-2 of the holder 1210 to restrict movement of the remaining one of the second protrusions 1320 of the moving plate 1300 in two directions. For example, the second groove 1211-2 of the holder 1210 may restrict movement of the second protrusion 1320 of the moving plate 1300 in the left-right direction, but not in the up-down direction.

[0117] The holder 1210 may include a first protrusion 1212. The first protrusion 1212 may be an upper stopper. The first protrusion 1212 may be formed on an upper surface of the holder 1210. The first protrusion 1212 may protrude from the upper surface of the holder 1210. The first protrusion 1212 may come into contact with the housing 1110 when the holder 1210 moves upward. The first protrusion 1212 may come into contact with the second portion 1112 of the housing 1110 when the holder 1210 moves upward.

[0118] The holder 1210 may include a second protrusion 1213. The second protrusion 1213 may be a lower stopper. The second protrusion 1213 may be formed on a lower surface of the holder 1210. The second protrusion 1213 may protrude from the lower surface of the holder 1210. The second protrusion 1213 may come into contact with the housing 1110 when the holder 1210 moves downward. The second protrusion 1213 may come into contact with the third portion 1113 of the housing 1110 when the holder 1210 moves downward.

[0119] In the first embodiment of the present invention, in an initial state, the first protrusion 1212 of the holder 1210 may contact the second portion 1112 of the housing 1110. When a current is applied to the first actuator 1410 or an impact occurs, the second protrusion 1213 of the holder 1210 may come into contact with the third portion 1113 of the housing 1110.

[0120] The holder 1210 may include an adhesive-receiving groove 1214. The adhesive-receiving groove 1214 may contain an adhesive that secures the reflective member 1220 to the holder 1210. The adhesive containing groove 1214 may be formed on the surface that contacts the reflecting member 1220. An adhesive may be placed in the adhesive containing groove 1214.

[0121] The holder 1210 may include a groove 1215. The groove 1215 may be a separation groove that provides a separation space between the holder 1210 and the reflecting member 1220. The groove 1215 may be formed on a surface that contacts the reflecting member 1220. The groove 1215 may reduce the contact area between the reflecting member 1220 and the holder 1210.

[0122] The holder 1210 may include a groove 1216. The groove 1216 may be a lightening groove. The groove 1216 may be formed in the center of the holder 1210. The groove 1216 may reduce the weight of the holder 1210.

[0123] Holder 1210 may include magnet accommodating groove 1217. Driving magnets 1411 and 1421 may be disposed in magnet accommodating groove 1217. Magnet accommodating groove 1217 may be formed in a shape corresponding to driving magnets 1411 and 1421. Magnet accommodating groove 1217 may be formed to be recessed in the lower surface of holder 1210. Magnet accommodating groove 1217 may be formed on the lower surface and both side surfaces of holder 1210. The magnet accommodating groove 1217 may include a plurality of magnet accommodating grooves. The magnet accommodating groove 1217 may include a first magnet accommodating groove that accommodates the first drive magnet 1411 and the yoke 1414. The magnet accommodating groove 1217 may include a second magnet accommodating groove that accommodates the second drive magnet 1421 and the yoke 1424.

[0124] The holder 1210 may include a groove 1218. The groove 1218 may be a mover rigid receiving groove. The coupling portion 1232 of the mover rigid 1230 may be disposed in the groove 1218. The groove 1218 may be formed in a shape corresponding to the coupling portion 1232 of the mover rigid 1230. The groove 1218 may include a groove for receiving an adhesive that fixes the coupling portion 1232 of the mover rigid 1230 to the holder 1210. The holder 1210 may include a plurality of protrusions formed in the groove 1218. At least a portion of the coupling portion 1232 of the mover rigid 1230 may be inserted into the groove 1218. The reflective member driving device 1000 may include an adhesive that fixes the mover rigid 1230 to the holder 1210. At least a portion of the adhesive may be disposed between the plurality of protrusions formed in the groove 1218 of the holder 1210. This can improve the bonding strength between the mover rigid 1230 and the holder 1210.

[0125] The holder 1210 may include a side stopper 1219. The side stopper 1219 may be formed on both side surfaces of the holder 1210. The side stopper 1219 may protrude from a side surface of the holder 1210. The side stopper 1219 may come into contact with the housing 1110 when the holder 1210 moves laterally. The side stopper 1219 may come into contact with a side plate of the housing 1110 when the holder 1210 moves laterally.

[0126] The reflecting member driving device 1000 may include a reflecting member 1220. The moving unit 1200 may include a reflecting member 1220. The reflecting member 1220 may be disposed on a holder 1210. The reflecting member 1220 may be disposed within the holder 1210. The reflecting member 1220 may be coupled to the holder 1210. The reflecting member 1220 may be fixed to the holder 1210. The reflecting member 1220 may be fixed to the holder 1210 by adhesive. The reflecting member 1220 may move integrally with the holder 1210. The reflecting member 1220 may change the path of light. The reflecting member 1220 may reflect light. The reflecting member 1220 may include a prism. The reflecting member 1220 may include a mirror. The reflecting member 1220 may be formed in a triangular prism shape. An angle between the path of light incident on the reflecting member 1220 and the path of light emitted therefrom may be 90 degrees.

[0127] The reflective member driving device 1000 may include a mover rigid 1230. The moving unit 1200 may include the mover rigid 1230. The mover rigid 1230 may be coupled to the holder 1210. The mover rigid 1230 may be formed as a separate member from the holder 1210. The mover rigid 1230 may be coupled to the holder 1210 by passing through a hole 1114 of the housing 1110. The mover rigid 1230 may be formed of a non-magnetic metal. A first magnet 1240 and a second magnet 1120 may be disposed between the mover rigid 1230 and the holder 1210. The first magnet 1240 and the second magnet 1120 may be disposed with the same polarities facing each other and may be pushed outward. The first magnet 1240 fixed to the housing 1110 may push the second magnet 1120 outward. The mover rigid 1230 to which the second magnet 1120 is fixed may also be pressed outward due to the repulsive force of the first magnet 1240. The holder 1210 to which the mover rigid 1230 is fixed may also be pressed outward. This allows the holder 1210 to press the moving plate 1300 against the housing 1110. This allows the moving plate 1300 to be positioned between the holder 1210 and the housing 1110 without being removed.

[0128] The mover rigid 1230 may include a protrusion 1231. The protrusion 1231 may extend from a main body of the mover rigid 1230. The protrusion 1231 may be coupled to the housing 1110 by a damper 1500. The protrusion 1231 may be disposed in a central region of the mover rigid 1230. The protrusion 1231 may be formed in the central region of the mover rigid 1230. The protrusion 1231 may protrude from an upper surface of the main body of the mover rigid 1230. The protrusion 1231 may come into contact with the housing 1110 when the mover rigid 1230 moves.

[0129] The protrusion 1231 may include a plurality of protrusions. The protrusion 1231 of the mover rigid 1230 may include a first protrusion formed on an upper surface of the body of the mover rigid 1230. The protrusion 1231 may include a second protrusion formed on a lower surface of the body of the mover rigid 1230. At least a portion of the first protrusion of the mover rigid 1230 may be disposed in a first groove of the housing 1110. At least a portion of the second protrusion of the mover rigid 1230 may be disposed in a second groove of the housing 1110. The protrusion 1231 may include a first protrusion region protruding from one side and a second protrusion region protruding from the other side. Each of the first and second protrusion regions may be referred to as a protrusion.

[0130] The mover rigid 1230 may include a main body portion. The main body portion may be disposed on the opposite side of the moving plate 1300 with respect to the first portion 1111 of the housing 1110. The mover rigid 1230 may include two coupling portions 1232 protruding from both sides of the main body portion. The mover rigid 1230 may include two protrusions 1231 protruding from above and below the main body portion.

[0131] The mover rigid 1230 may include a coupling portion 1232. The coupling portion 1232 may be a leg portion. The coupling portion 1232 may extend from a main body portion of the mover rigid 1230. The coupling portion 1232 may pass through the hole 1114 of the housing 1110. The coupling portion 1232 may be coupled to the holder 1210. The coupling portion 1232 may be fixed to the holder 1210 by an adhesive. At least a portion of the coupling portion 1232 may be inserted into the groove 1218 of the holder 1210.

[0132] The reflection member driving device 1000 may include a first magnet 1240. The moving unit 1200 may include the first magnet 1240. The first magnet 1240 may be disposed in the moving unit 1200. The first magnet 1240 may be a first repulsive magnet. The first magnet 1240 may be disposed in the mover rigid 1230. The first magnet 1240 may be disposed in a main body of the mover rigid 1230. The first magnet 1240 may be disposed to face the second magnet 1120. The first magnet 1240 may be arranged so as to generate a repulsive force with the second magnet 1120. The first magnet 1240 may be arranged so that the same polarities face the second magnet 1120. The first magnet 1240 may push the second magnet 1120.

[0133] In the first embodiment of the present invention, the central axis of the first magnet 1240 may be disposed eccentrically with respect to the central axis of the moving plate 1300 based on the first optical axis. In this case, the first optical axis may be the z-axis. The first optical axis may be an axis perpendicular to the sensor surface of the image sensor 3400. The first optical axis may be the optical axis of a lens group disposed adjacent to the image sensor 3400.

[0134] As shown in FIG. 26, the horizontal central axis A of the first magnet 1240 and the second magnet 1120 may be eccentrically disposed with a gap G in the vertical direction relative to the horizontal central axis B of the moving plate 1300 .

[0135] When viewed in a direction from the moving plate 1300 toward the first magnet 1240 , the center of the first magnet 1240 may be disposed eccentrically with the center of the moving plate 1300 .

[0136] Based on the opposing surfaces, the horizontal axis passing through the central axis of the first magnet 1240 may be offset in the direction of a horizontal axis passing through the central axis of the moving plate 1300 and a second optical axis perpendicular to the first optical axis. In this case, the horizontal axis may be the x-axis. The horizontal axis may be arranged in the horizontal direction. The second optical axis may be the y-axis. The second optical axis may be an axis parallel to the sensor surface of the image sensor 3400. The second optical axis may be arranged in the vertical direction. Based on the opposing surfaces, the horizontal axis meeting or contacting the central axis of the first magnet 1240 may be offset in the direction of a horizontal axis passing through the central axis of the moving plate 1300 and a second optical axis perpendicular to the first optical axis. The center of the first magnet 1240 may be arranged to be offset in the vertical direction relative to the center of the moving plate 1300.

[0137] Based on the opposing surfaces, the vertical axis passing through the central axis of the first magnet 1240 may not be eccentric in the direction of the vertical axis and horizontal axis passing through the central axis of the moving plate 1300. In this case, the horizontal axis may be the x-axis. The horizontal axis may be arranged in the horizontal direction. The second optical axis may be the y-axis. The second optical axis may be an axis parallel to the sensor surface of the image sensor 3400. The second optical axis may be arranged in the vertical direction. The center of the first magnet 1240 may be arranged so as not to be eccentric in the horizontal direction relative to the center of the moving plate 1300.

[0138] Based on the opposing surfaces, a horizontal line passing through the center of the first magnet 1240 may be vertically offset from a horizontal line passing through the center of the moving plate 1300. Based on the opposing surfaces, a vertical line passing through the center of the first magnet 1240 may not be horizontally offset from a vertical line passing through the center of the moving plate 1300.

[0139] The horizontal axis of the first magnet 1240 may be positioned higher than the horizontal axis of the moving plate 1300. In a variation, the horizontal axis of the first magnet 1240 may be positioned lower than the horizontal axis of the moving plate 1300.

[0140] The first magnet 1240 and the second magnet 1120 may be disposed between the mover rigid 1230 and the moving plate 1300 .

[0141] The size of the first magnet 1240 may be different from the size of the second magnet 1120. The first magnet 1240 may be formed to have a different size from the second magnet 1120. The size of the first magnet 1240 may be larger than the size of the second magnet 1120. The first magnet 1240 may be formed to be larger than the second magnet 1120.

[0142] The area of ​​the first surface of the first magnet 1240 may be larger than the area of ​​the second surface of the second magnet 1120 facing the first surface. The first and second surfaces are arbitrarily referred to, and one of the two may be referred to as the first surface and the other as the second surface, or both may be referred to as the first surface. The first magnet 1240 may include a first surface. The second magnet 1120 may include a first surface facing the first surface of the first magnet 1240.

[0143] The area of ​​the first face of the first magnet 1240 may be larger than the area of ​​the first face of the second magnet 1120 .

[0144] The first surface of the first magnet 1240 may include a first edge. The first surface of the second magnet 1120 may include a first edge disposed in a direction corresponding to the first edge of the first magnet 1240. The first edge of the second magnet 1120 may be 55% to 75% of the first edge of the first magnet 1240. The first edge of the second magnet 1120 may be 60% to 66% of the first edge of the first magnet 1240. The first edge of the second magnet 1120 may be 62% to 64% of the first edge of the first magnet 1240. A height H1 of the first magnet 1240 may be greater than a height H2 of the second magnet 1120. A width W1 of the first magnet 1240 may be greater than a width W2 of the second magnet 1120.

[0145] The area of ​​the first face of the second magnet 1120 may be 30% to 50% of the area of ​​the first face of the first magnet 1240. The area of ​​the first face of the second magnet 1120 may be 35% to 45% of the area of ​​the first face of the first magnet 1240. The area of ​​the first face of the second magnet 1120 may be 38% to 42% of the area of ​​the first face of the first magnet 1240.

[0146] The first magnet 1240 and the second magnet 1120 may be formed to have the same thickness. The volume of the second magnet 1120 may be 30% to 50% of the volume of the first magnet 1240.

[0147] When viewed from the second magnet 1120 in a direction towards the first magnet 1240 , an edge region of the second magnet 1120 may be disposed within a first face of the first magnet 1240 . The edge region may be an end region. The edge region may be a corner. The first magnet 1240 may be arranged such that the entire region of the second magnet 1120 overlaps with the first magnet 1240 in a first direction in which the first magnet 1240 faces the second magnet 1120. The first magnet 1240 may be arranged such that the entire region of the second magnet 1120 overlaps with the first magnet 1240 in a first direction in which the first magnet 1240 faces the second magnet 1120.

[0148] In a modified example, the size of the first magnet 1240 may be smaller than the size of the second magnet 1120. The second magnet 1120 may be formed larger than the first magnet 1240.

[0149] The central axes of the first magnet 1240 and the second magnet 1120 may coincide with each other. However, in actual products, a tolerance of ±1% to ±2% may occur.

[0150] In the first embodiment of the present invention, the second magnet 1120 may include a second surface facing the first surface of the first magnet 1240. In this case, the central axis of the first magnet 1240 may be disposed eccentrically with the central axis of the moving plate 1300 in a direction perpendicular to the first surface. The area of ​​the first surface of the first magnet 1240 may be larger than the area of ​​the second surface of the second magnet 1120.

[0151] In the first embodiment of the present invention, in an initial state where no current is applied to the driving unit 1400, the moving unit 1200 may be in contact with the fixed unit 1100. When viewed in a direction from the second magnet 1120 toward the first magnet 1240, the corners of the first magnet 1240 may surround the second magnet 1120. When viewed in a direction from the second magnet 1120 toward the first magnet 1240, the second magnet 1120 may be disposed inside the corners of the first magnet 1240.

[0152] The first magnet 1240 may include a first surface facing the second magnet 1120 and a second surface opposite the first surface. The first surface of the first magnet 1240 may include a first side and a second side that is shorter than the first side. The first side of the first magnet 1240 may be formed to be 1 mm to 5 mm. The second side of the first magnet 1240 may be formed to be 0.8 mm to 4 mm. The thickness between the first surface and the second surface of the first magnet 1240 may be formed to be 0.1 mm to 0.5 mm.

[0153] In the first embodiment of the present invention, the force (Fx) generated by the first actuator 1410 may be within 7 mN. Also, the force (Fy) generated by the second actuator 1420 may be within 7 mN. Alternatively, the force (Fx) generated by the first actuator 1410 may be within 3 mN. Also, the force (Fy) generated by the second actuator 1420 may be within 3 mN.

[0154] The first surface of the first magnet 1240 may be formed in a square shape. The first surface of the second magnet 1120 may be formed in a square shape. Alternatively, the first surface of the first magnet 1240 and the first surface of the second magnet 1120 may each be formed in a rectangle. The first magnet 1240 may have at least a portion of a square cross section. The second magnet 1120 may have at least a portion of a square cross section. The first magnet 1240 may have rounded ends. The second magnet 1120 may have rounded ends.

[0155] In a variant, the first magnet 1240 may have a circular cross section. The first magnet 1240 may be formed in a cylindrical shape. The second magnet 1120 may have a circular cross section. The second magnet 1120 may be formed in a cylindrical shape. The first magnet 1240 may have an R-shaped end. The first magnet 1240 may have a curved end. The first magnet 1240 may have a curvature at its end. The first magnet 1240 may have a C-cut or R-cut end. The second magnet 1120 may have an R-shaped end. The second magnet 1120 may have a curved end. The second magnet 1120 may have a curvature at its end. The second magnet 1120 may have a C-cut or R-cut end.

[0156] The reflective member driving device 1000 may include a moving plate 1300. The moving plate 1300 may be an intermediate plate. The moving plate 1300 may be disposed between the housing 1110 and the holder 1210. The moving plate 1300 may be disposed between the mover rigid 1230 and the holder 1210. The moving plate 1300 may be disposed between the first magnet 1240 and the holder 1210. The moving plate 1300 may be disposed between the fixed part 1100 and the moving part 1200. The moving plate 1300 may be disposed between a first surface of the second magnet 1120 and the holder 1210. The moving plate 1300 may guide the movement of the holder 1210 relative to the housing 1110. The moving plate 1300 may provide a tilt center for the holder 1210. That is, the holder 1210 may tilt around the moving plate 1300. One side of the moving plate 1300 may be disposed on the holder 1210 and the other side may be disposed on the housing 1110. The moving plate 1300 may be in contact with the holder 1210 and the housing 1110.

[0157] The moving plate 1300 may include a first surface facing the housing 1110 and a second surface facing the holder 1210. The first surface of the moving plate 1300 may include a plurality of first protrusions 1310 spaced apart from one another in the direction of a first axis. The second surface of the moving plate 1300 may include a plurality of second protrusions 1320 spaced apart from one another in the direction of a second axis.

[0158] The moving plate 1300 may include a plurality of first convex portions formed on one surface and a plurality of second convex portions formed on the other surface. The first convex portions may be first protrusions 1310. The second convex portions may be second protrusions 1320. The x-axis may correspond to a line connecting two of the plurality of first convex portions. The x-axis may be coincident with or parallel to the line connecting two of the plurality of first convex portions. The y-axis may correspond to a line connecting two of the plurality of second convex portions. The y-axis may be coincident with or parallel to the line connecting two of the plurality of second convex portions. In a variant example, the first convex portions may be second protrusions 1320, and the second convex portions may be first protrusions 1310.

[0159] The moving plate 1300 may include a first protrusion 1310. The first protrusion 1310 may be disposed on the housing 1110. The first protrusion 1310 may contact the housing 1110. The first protrusion 1310 may be disposed in a groove 1115 of the housing 1110. The first protrusion 1310 may provide a first-axis tilt center for the holder 1210. The first protrusion 1310 may provide an x-axis tilt center for the holder 1210. The first protrusion 1310 may include two first protrusions. The two first protrusions may be spaced apart in the x-axis direction. The two first protrusions may be disposed on the x-axis. The holder 1210 may be tilted around the first protrusion 1310 of the moving plate 1300 by the first driver 1410. The holder 1210 may be tilted up and down around the first protrusion 1310 of the moving plate 1300 by the first driver 1410.

[0160] The first axis of the moving plate 1300 may be defined by the first protrusion 1310 of the moving plate 1300 and the groove 1115 of the housing 1110. In the first embodiment of the present invention, the first protrusion 1310 of the moving plate 1300 is disposed on the housing 1110 side rather than the holder 1210 side, so that the center of tilt rotation around the first axis may be further away. This may increase the accuracy of the Hall value for detecting the amount of tilt movement along the first axis. A mechanical stroke for x-axis tilt drive may also be ensured.

[0161] The moving plate 1300 may include a second protrusion 1320. The second protrusion 1320 may be disposed on the holder 1210. The second protrusion 1320 may contact the holder 1210. The second protrusion 1320 may be disposed in the groove 1211 of the holder 1210. The second protrusion 1320 may provide a second-axis tilt center perpendicular to the first axis for the holder 1210. The second protrusion 1320 may provide a y-axis tilt center for the holder 1210. The second protrusion 1320 may include two second protrusions. The two second protrusions may be spaced apart in the y-axis direction. The two second protrusions may be disposed on the y-axis. The holder 1210 may tilt around the second protrusion 1320 of the moving plate 1300 by the second driver 1420. The holder 1210 can be tilted left and right by the second drive unit 1420 around the second protrusion 1320 of the moving plate 1300 .

[0162] In an alternative embodiment, a first protrusion 1310 of the moving plate 1300 can provide a y-axis tilt center for the holder 1210, and a second protrusion 1320 of the moving plate 1300 can provide an x-axis tilt center.

[0163] The reflective member driving device 1000 may include grease. The grease may be disposed between the moving plate 1300 and the housing 1110. The grease may be formed of a different material from the damper 1500. The grease may be separated from the damper 1500. The grease may be separated from the damper 1500. The grease may be applied in a different shape from the damper 1500. The grease may be applied at a different position from the damper 1500.

[0164] The reflective member driving device 1000 may include a driving unit 1400. The driving unit 1400 may move the moving unit 1200 relative to the fixed unit 1100. The driving unit 1400 may tilt the moving unit 1200 relative to the fixed unit 1100. The driving unit 1400 may tilt the holder 1210. The driving unit 1400 may tilt the moving unit 1200 based on x-axis and y-axis of the moving plate 1300, which are perpendicular to each other. The driving unit 1400 may include a coil and a magnet. The driving unit 1400 may move the moving unit 1200 through electromagnetic interaction. In a modified example, the driving unit 1400 may include a shape memory alloy (SMA).

[0165] The actuator 1400 may include a first actuator 1410 and a second actuator 1420. The first actuator 1410 may include a first actuator magnet 1411 and a first coil 1412. The second actuator 1420 may include a second actuator magnet 1421 and a second coil 1422. The first actuator magnet 1411 and the first coil 1412 can tilt the holder 1210 around a first axis. The second actuator magnet 1421 and the second coil 1422 can tilt the holder 1210 around a second axis perpendicular to the first axis. One of the first actuator magnet 1411 and the second actuator magnet 1421 may be referred to as a third magnet, and the other may be referred to as a fourth magnet.

[0166] The driving unit 1400 may include a first driving unit 1410. The first driving unit 1410 may tilt the moving unit 1200 about a first axis relative to the fixed unit 1100. The first driving unit 1410 may tilt the holder 1210 about a first axis of the moving plate 1300. The first driving unit 1410 may tilt the moving unit 1200 about an x-axis relative to the fixed unit 1100. The first driving unit 1410 may include a coil and a magnet. The first driving unit 1410 may move the moving unit 1200 through electromagnetic interaction. In a modified example, the first driving unit 1410 may include a shape memory alloy (SMA).

[0167] The first driving unit 1410 may include a first driving magnet 1411. The first driving magnet 1411 may be disposed on the holder 1210. The first driving magnet 1411 may be disposed on the lower surface of the holder 1210. The first driving magnet 1411 may be fixed to the holder 1210. The first driving magnet 1411 may be fixed to the holder 1210 with an adhesive. The first driving magnet 1411 may be disposed between the holder 1210 and the lower surface of the housing 1110. The first driving magnet 1411 may be disposed between the holder 1210 and the lower plate of the housing 1110. The first driving magnet 1411 may move integrally with the holder 1210. The first driving magnet 1411 may tilt the holder 1210. The first driving magnet 1411 may tilt the holder 1210 about a first axis. The first driving magnet 1411 may be disposed to face the first coil 1412. The first drive magnet 1411 can face the first coil 1412. The first drive magnet 1411 may be disposed at a position corresponding to the first coil 1412. The first drive magnet 1411 can interact with the first coil 1412. The first drive magnet 1411 can electromagnetically interact with the first coil 1412. At least a portion of the first drive magnet 1411 may be disposed in the groove 1217 of the holder 1210.

[0168] The first drive magnet 1411 may include a first surface facing the reflecting member 1220. The second magnet 1120 may include a first surface facing the reflecting member 1220. The first surface of the first drive magnet 1411 may include a first region closest to the second magnet 1120. The first region of the first drive magnet 1411 may have a polarity different from that of the first surface of the second magnet 1120. The first surface of the first drive magnet 1411 may include a second region having a polarity different from that of the first region. The first region of the first drive magnet 1411 may have a south pole and the second region may have a north pole. In this case, the first surface of the second magnet 1120 may have a north pole. In a variant, the first region of the first drive magnet 1411 may have a north pole and the second region may have a south pole.

[0169] In the first embodiment of the present invention, magnetic field interference can be minimized through the magnet polarity arrangement of the first drive magnet 1411 and the second magnet 1120.

[0170] The first drive magnet 1411 may include a second surface opposite the first surface of the first drive magnet 1411. The second surface of the first drive magnet 1411 may include a third region having a polarity different from that of the first region. The second surface of the first drive magnet 1411 may include a fourth region having a polarity different from that of the second region. The second surface of the first drive magnet 1411 may face the first coil 1412. The third region may have a north pole and the fourth region may have a south pole. In a variant, the third region may have a south pole and the fourth region may have a north pole.

[0171] The first drive magnet 1411 may include a neutral portion disposed between the first region and the second region. The first drive magnet 1411 may include a neutral portion disposed between the third region and the fourth region. The neutral portion may be a portion where the polarity is close to neutral. The neutral portion may be an air gap. Alternatively, in a modified example, the neutral portion may be disposed between the first region and the third region and between the second region and the fourth region.

[0172] The region of the first drive magnet 1411 closest to the first surface of the second magnet 1120 may have a polarity that generates an attractive force with the first surface of the second magnet 1120. The first surface of the second magnet 1120 and the first region of the first drive magnet 1411 closest to the first surface of the second magnet 1120 may generate an attractive force with each other.

[0173] Each of the second magnet 1120 and the first drive magnet 1411 may include a first surface facing the center of the moving part 1200. The first surface of the first drive magnet 1411 may include a first region and a second region having different polarities. The first surface of the second magnet 1120 may be disposed so as to be closer to the first drive magnet 1411 than to the second drive magnet 1421. The first region of the first drive magnet 1411 may be disposed so as to be closer to the second magnet 1120 than to the second region. The first region of the first drive magnet 1411 may have a polarity different from that of the first surface of the second magnet 1120.

[0174] Each of the second magnet 1120 and the first drive magnet 1411 may include a first surface facing toward the center of the holder 1210. The first surface of the first drive magnet 1411 and the first surface of the second magnet 1120 may include regions having different polarities.

[0175] The first actuator 1410 may include a first coil 1412. The first coil 1412 may be disposed on the substrate 1130. The first coil 1412 may be disposed on the housing 1110. The first coil 1412 may be disposed on the substrate 1130 at a position corresponding to the first actuator magnet 1411. The first coil 1412 may be disposed below the holder 1210. The first coil 1412 may interact with the first actuator magnet 1411. When a current is applied to the first coil 1412, an electromagnetic field is formed around the first coil 1412, which may interact with the first actuator magnet 1411. The first actuator magnet 1411 and the first coil 1412 may tilt the holder 1210 about a first axis. In this case, the first axis may be the x-axis.

[0176] In the first embodiment of the present invention, a first directional driving current may be applied to the first coil 1412 to drive the first coil 1412. In this case, a second directional driving current opposite to the first directional driving current may not be used to drive the first coil 1412. That is, only one current of either the reverse direction or the forward direction may be supplied to the first coil 1412.

[0177] The reflective member driving device 1000 may include a Hall sensor 1413. The Hall sensor 1413 may sense the first driving magnet 1411. The Hall sensor 1413 may sense the magnetic force of the first driving magnet 1411. The Hall sensor 1413 may sense the position of the holder 1210. The Hall sensor 1413 may sense the position of the reflective member 1220. The Hall sensor 1413 may sense the amount of tilt of the holder 1210 around the x-axis.

[0178] The reflection member driving device 1000 may include a yoke 1414. The yoke 1414 may be disposed between the first driving magnet 1411 and the holder 1210. The yoke 1414 may be formed in a shape corresponding to the first driving magnet 1411. The yoke 1414 may increase the interaction force between the first driving magnet 1411 and the first coil 1412.

[0179] The driving unit 1400 may include a second driving unit 1420. The second driving unit 1420 may tilt the moving unit 1200 about a second axis relative to the fixed unit 1100. The second driving unit 1420 may tilt the holder 1210 about a second axis perpendicular to the first axis of the moving plate 1300. The second driving unit 1420 may tilt the moving unit 1200 about a y-axis relative to the fixed unit 1100. The second driving unit 1420 may include a coil and a magnet. The second driving unit 1420 may move the moving unit 1200 through electromagnetic interaction. In a modified example, the second driving unit 1420 may include a shape memory alloy (SMA).

[0180] The second driving unit 1420 may include a second driving magnet 1421. The second driving magnet 1421 may be disposed on the holder 1210. The second driving magnet 1421 may be disposed on both side surfaces of the holder 1210. The second driving magnet 1421 may be fixed to the holder 1210. The second driving magnet 1421 may be fixed to the holder 1210 with an adhesive. The second driving magnet 1421 may be disposed between the holder 1210 and a side surface of the housing 1110. The second driving magnet 1421 may be disposed between the holder 1210 and a side plate of the housing 1110. The second driving magnet 1421 may move integrally with the holder 1210. The second driving magnet 1421 may tilt the holder 1210. The second driving magnet 1421 may tilt the holder 1210 about a second axis perpendicular to the first axis. The second drive magnet 1421 may be disposed so as to face the second coil 1422. The second drive magnet 1421 can face the second coil 1422. The second drive magnet 1421 may be disposed at a position corresponding to the second coil 1422. The second drive magnet 1421 can interact with the second coil 1422. The second drive magnet 1421 can electromagnetically interact with the second coil 1422.

[0181] The second drive magnet 1421 may include a neutral portion having no polarity. The neutral portion may be an air gap. The neutral portion may be disposed between the north pole and the south pole. The neutral portion may be disposed between a first portion corresponding to the front of the second drive magnet 1421 and a second portion corresponding to the rear of the second drive magnet 1421. Alternatively, the neutral portion may be disposed between an inner portion and an outer portion of the second drive magnet 1421.

[0182] The second driving magnet 1421 may include a first sub-magnet 1421-1. The first sub-magnet 1421-1 may be disposed on one side of the holder 1210. The first sub-magnet 1421-1 may be disposed to face the first sub-coil 1422-1. The first sub-magnet 1421-1 may face the first sub-coil 1422-1. The first sub-magnet 1421-1 may be disposed at a position corresponding to the first sub-coil 1422-1. The first sub-magnet 1421-1 may interact with the first sub-coil 1422-1. The first sub-magnet 1421-1 may electromagnetically interact with the first sub-coil 1422-1.

[0183] The second drive magnet 1421 may include a second sub-magnet 1421-2. The second sub-magnet 1421-2 may be disposed on the other side of the holder 1210. The second sub-magnet 1421-2 may be disposed opposite the first sub-magnet 1421-1. The second sub-magnet 1421-2 may be formed to have the same size and shape as the first sub-magnet 1421-1. The second sub-magnet 1421-2 may be disposed to face the second sub-coil 1422-2. The second sub-magnet 1421-2 may face the second sub-coil 1422-2. The second sub-magnet 1421-2 may be disposed at a position corresponding to the second sub-coil 1422-2. The second sub-magnet 1421-2 may interact with the second sub-coil 1422-2. The second sub-magnet 1421-2 may electromagnetically interact with the second sub-coil 1422-2.

[0184] The second drive unit 1420 may include a second coil 1422. The second coil 1422 may be disposed on the substrate 1130. The second coil 1422 may be disposed on the housing 1110. The second coil 1422 may be disposed on a second portion of the substrate 1130. The second coil 1422 may be disposed on both sides of the holder 1210. When a current is applied to the second coil 1422, an electromagnetic field is formed around the second coil 1422, which may interact with the second actuation magnet 1421. The second coil 1422 may include two sub-coils 1421-1 and 1421-2 disposed on opposite sides of the holder 1210. The two sub-coils 1421-1 and 1421-2 may be electrically connected to each other. The second actuation magnet 1421 and the second coil 1422 may tilt the holder 1210 about a second axis perpendicular to the first axis. In this case, the second axis may be the y-axis. The first axis may be the x-axis, and the z-axis may be the optical axis of the image sensor 3400.

[0185] The second coil 1422 may include a first subcoil 1422-1. The first subcoil 1422-1 may be disposed on the substrate 1130. The first subcoil 1422-1 may be disposed in the housing 1110. The first subcoil 1422-1 may be disposed in a second portion of the substrate 1130. The first subcoil 1422-1 may be disposed on a side of the holder 1210. When a current is applied to the first subcoil 1422-1, an electromagnetic field is formed around the first subcoil 1422-1, which may interact with the first submagnet 1421-1.

[0186] The second coil 1422 may include a second subcoil 1422-2. The second subcoil 1422-2 may be disposed on the substrate 1130. The second subcoil 1422-2 may be disposed in the housing 1110. The second subcoil 1422-2 may be disposed in a second portion of the substrate 1130. The second subcoil 1422-2 may be disposed on a side of the holder 1210. When a current is applied to the second subcoil 1422-2, an electromagnetic field is formed around the second subcoil 1422-2, which may interact with the second sub-magnet 1421-2.

[0187] The second drive magnet 1421 may include a first sub-magnet 1421-1 arranged on a first side surface of the holder 1210 and a second sub-magnet 1421-2 arranged on a second side surface of the holder 1210. The second coil 1422 may include a first sub-coil 1422-1 arranged on a substrate and positioned corresponding to the first sub-magnet 1421-1, and a second sub-coil 1422-2 arranged on the substrate and positioned corresponding to the second sub-magnet 1421-2.

[0188] The reflective member driving device 1000 may include a Hall sensor 1423. The Hall sensor 1423 may sense the second driving magnet 1421. The Hall sensor 1423 may sense the magnetic force of the second driving magnet 1421. The Hall sensor 1423 may sense the position of the holder 1210. The Hall sensor 1423 may sense the position of the reflective member 1220. The Hall sensor 1423 may sense the amount of tilt of the holder 1210 around the y-axis.

[0189] The reflection member driving device 1000 may include a yoke 1424. The yoke 1424 may be disposed between the second driving magnet 1421 and the holder 1210. The yoke 1424 may be formed in a shape corresponding to the second driving magnet 1421. The yoke 1424 may increase the interaction force between the second driving magnet 1421 and the second coil 1422.

[0190] The reflective member driving device 1000 may include a damper 1500. The damper 1500 may include an adhesive material. The damper 1500 may have viscosity. The damper 1500 may be disposed between the fixed part 1100 and the moving part 1200. The damper 1500 may be disposed between the mover rigid 1230 and the housing 1110. The damper 1500 may connect the mover rigid 1230 and the housing 1110. The damper 1500 may be coupled to the mover rigid 1230 and the housing 1110. The damper 1500 may be disposed on the mover rigid 1230. The damper 1500 may be coupled to the mover rigid 1230. The damper 1500 may be coupled to the mover rigid 1230. The mover rigid 1230 may be coupled to the housing 1110. The damper 1500 may bond the housing 1110 and the mover rigid 1230 together.

[0191] The damper 1500 may be disposed in at least one of the upper and lower portions of the first portion 1111 of the housing 1110. The damper 1500 may connect the protrusion 1231 of the mover rigid 1230 and the housing 1110. At least a portion of the damper 1500 may be disposed in the groove 1119 of the housing 1110 between the protrusion 1231 of the mover rigid 1230 and the housing 1110. At least a portion of the damper 1500 may be disposed in a second groove recessed from the first groove of the housing 1110.

[0192] In the first embodiment of the present invention, a gel bond that acts as a damper can be applied between the housing 1110 and the mover rigid 1230. This maintains the gain value while ensuring a phase margin, thereby improving the responsiveness of the actuator. That is, the FRA characteristics may be improved. In particular, the response characteristics of tilt (pitch) around the x-axis may be improved. Tilt (yaw) around the y-axis may also be improved.

[0193] 30 and 31 are diagrams illustrating tilting about the x-axis of the reflecting member driving device according to the first embodiment of the present invention.

[0194] In the first embodiment of the present invention, in an initial state where no current is supplied to the first driving unit 1410, the holder 1210 may be disposed between the upper and lower plates of the housing 1110. At this time, the holder 1210 may be in contact with the upper plate of the housing 1110 (see FIG. 30).

[0195] At this time, when a current in a first direction is applied to the first coil 1412, the electromagnetic interaction between the first coil 1412 and the first drive magnet 1411 causes the holder 1210 to tilt downward around the first protrusion 1310 of the moving plate 1300 (see θ in Figure 31).

[0196] That is, when a current is applied to the first coil 1412, the holder 1210 can tilt downward about the x-axis relative to the housing 1110. At this time, the reflective member 1220 is also tilted together with the holder 1210, so the optical path is changed and the shaking detected by the gyro sensor 1150 may be offset.

[0197] In the first embodiment of the present invention, only a current in a first direction may be used to control the first coil 1412, and a current in a direction opposite to the first direction may not be used. This may essentially prevent the problem of the moving plate 1300 coming off, which may occur if a current in a second direction is applied to the first coil 1412.

[0198] More specifically, in the comparative example, if the centers of the first magnet 1240 and the second magnet 1120 are positioned at the same height as the first protrusion 1310 of the moving plate 1300, and the repulsive force between the first magnet 1240 and the second magnet 1120 and the electromagnetic force between the first coil 1412 and the first driving magnet 1411 are uniform, the moving part 1200 may slide due to the electromagnetic force, causing the moving plate 1300 to detach. If the electromagnetic force between the first coil 1412 and the first driving magnet 1411 is greater than the repulsive force between the first magnet 1240 and the second magnet 1120, the mover rigid 1230 may slip out by the gap between the first magnet 1240 and the second magnet 1120, causing the moving plate 1300 to detach. This may cause poor Hall calibration dynamic characteristics.

[0199] In the first embodiment of the present invention, the center axis of the repulsive force and the center axis of the x-axis drive may be offset by a certain distance, so that the reflecting member 1220 can be mechanically shifted upward. In this case, the upward direction may be the opposite direction of gravity.

[0200] In the first embodiment of the present invention, control may be performed by a code instead of current control. In the pivot structure as in the first embodiment of the present invention, it is difficult to determine the initial position in an open state due to sagging caused by gravity, so control may be required in a closed manner (a manner in which the moving part 1200 contacts the fixed part 1100 in the initial state). In the first embodiment of the present invention, since the control is performed in a closed system, more precise driving can be performed. Furthermore, in the first embodiment of the present invention, the closed system can minimize noise generated by the movement of the moving part 1200.

[0201] 32 to 34 are diagrams illustrating tilting about the y-axis of the reflecting member driving device according to the first embodiment of the present invention.

[0202] In the first embodiment of the present invention, the holder 1210 may be disposed between both side plates of the housing 1110 in an initial state where no current is supplied to the second driving unit 1420. At this time, the holder 1210 may be spaced apart from both side plates of the housing 1110 (see FIG. 32).

[0203] At this time, when a current in a first direction is applied to the second coil 1422, the electromagnetic interaction between the second coil 1422 and the second driving magnet 1421 causes the holder 1210 to tilt to one side around the second protrusion 1320 of the moving plate 1300 (see a in Figure 33).

[0204] On the other hand, when a current in a second direction opposite to the first direction is applied to the second coil 1422, the electromagnetic interaction between the second coil 1422 and the second drive magnet 1421 causes the holder 1210 to tilt to the other side around the second protrusion 1320 of the moving plate 1300 (see b in Figure 34).

[0205] That is, when a current is selectively applied to the second coil 1422 in both directions, the holder 1210 can tilt left and right about the y-axis relative to the housing 1110. At this time, the reflecting member 1220 is also tilted together with the holder 1210, so that the optical path is changed and the shaking detected by the gyro sensor 1150 can be canceled out. Therefore, in the first embodiment of the present invention, image stabilization for the x-axis tilt and the y-axis tilt, i.e., two-axis tilt, can be performed.

[0206] A lens driving device according to a first embodiment of the present invention will be described below with reference to the drawings.

[0207] 35 is a perspective view of a lens driving device according to a first embodiment of the present invention, FIG. 36 is a perspective view of the lens driving device according to the first embodiment of the present invention with some of the components omitted, FIG. 37 is a perspective view of the lens driving device in the state shown in FIG. 36 when viewed from another direction, FIG. 38 is a perspective view of the lens driving device according to the first embodiment of the present invention with some of the components omitted, FIG. 39 is a perspective view of the lens driving device according to the first embodiment of the present invention with the components such as the substrate and coils omitted, FIG. 40 is a perspective view of the lens driving device in the state shown in FIG. 39 with the first lens and related components omitted, FIG. 41 is a perspective view and a partially enlarged view of some of the components of the lens driving device according to the first embodiment of the present invention, FIG. 42 is a drawing for explaining the arrangement of the coils and sensors of the lens driving device according to the first embodiment of the present invention, and FIG. 43 is a perspective view of the lens driving device according to FIG. 46 is a perspective view of the first moving section and the second moving section and related components of the lens driving device according to the first embodiment of the present invention; FIG. 47 is a perspective view of the second moving section and related components of the lens driving device according to the first embodiment of the present invention; FIG. 48 is an exploded perspective view of the lens driving device according to the first embodiment of the present invention; FIG. 49 is a perspective view of the second housing of the lens driving device according to the first embodiment of the present invention; FIGS. 50 and 51 are exploded perspective views of partial components of the lens driving device according to the first embodiment of the present invention; and FIG. 52 is a cross-sectional view of the lens driving device according to the first embodiment of the present invention.

[0208] The lens driving device 2000 can perform a zoom function. The lens driving device 2000 can perform a continuous zoom function. The lens driving device 2000 can perform an autofocus (AF) function. The lens driving device 2000 can move a lens. The lens driving device 2000 can move a lens along an optical axis. The lens driving device 2000 can move a lens formed of multiple groups group by group. The lens driving device 2000 can move a second group lens. The lens driving device 2000 can move a third group lens. The lens driving device 2000 can be a lens actuator. The lens driving device 2000 can be an AF actuator. The lens driving device 2000 can be a zoom actuator. The lens driving device 2000 can include a voice coil motor (VCM).

[0209] The lens driving device 2000 may include a lens. Alternatively, the lens may be described as a component of the camera device 10 rather than a component of the lens driving device 2000. The lens may be disposed in an optical path formed by the reflective member 1220 of the reflective member driving device 1000 and the image sensor 3400. The lens may include a plurality of lenses. The plurality of lenses may form a plurality of groups. The lenses may form three groups. The lenses may include first to third group lenses. A first group lens, a second group lens, and a third group lens may be sequentially disposed between the reflective member 1220 and the image sensor 3400. The first group lens may include a first lens 2120. The second group lens may include a second lens 2220. The third group lens may include a third lens 2320.

[0210] The lens driving device 2000 may include a fixed part 2100. The fixed part 2100 may be a part that is relatively fixed when the first moving part 2200 and the second moving part 2300 move.

[0211] The lens driving device 2000 may include a housing 2110. The fixing part 2100 may include a housing 2110. The housing 2110 may be disposed outside the first holder 2210 and the second holder 2310. The housing 2110 may accommodate at least a portion of the first holder 2210 and the second holder 2310. The housing 2110 may include a front plate, a rear plate, and a plurality of connecting plates. In this case, the front plate may be referred to as the upper plate, the rear plate may be referred to as the lower plate, and the connecting plates may be referred to as the side plates.

[0212] The housing 2110 may include a first housing 2110-1. The first housing 2110-1 may form a front plate of the housing 2110. The first housing 2110-1 may be coupled to a first lens 2120. The first housing 2110-1 may be a cover. The first housing 2110-1 may be coupled to the reflective member driving device 1000. The first lens 2120 may be fixed to the first housing 2110-1.

[0213] The housing 2110 may include a second housing 2110-2. The second housing 2110-2 may form a connecting plate with the rear plate of the housing 2110. The second housing 2110-2 may be open forward. The first housing 2110-1 may be coupled to the front of the second housing 2110-2. A portion of the guide rail 2130 may be disposed between the first housing 2110-1 and the second housing 2110-2.

[0214] The housing 2110 may include a first groove 2111. The first groove 2111 may be coupled with the protrusion 1116 of the housing 1110 of the reflective member driving device 1000. The first groove 2111 may be formed in a shape corresponding to the protrusion 1116 of the reflecting member driving device 1000. An adhesive for bonding the reflecting member driving device 1000 to the lens driving device 2000 may be disposed in the first groove 2111.

[0215] The housing 2110 may include a second groove 2112. The second groove 2112 may be coupled to the protrusion 1117 of the housing 1110 of the reflective member driving device 1000. The protrusion 1117 of the reflective member driving device 1000 may be inserted into the second groove 2112. The second groove 2112 may be formed in a shape corresponding to the protrusion 1117 of the reflective member driving device 1000. An adhesive for coupling the reflective member driving device 1000 to the lens driving device 2000 may be disposed in the second groove 2112.

[0216] The housing 2110 may include a first hole 2113. The first hole 2113 may expose the protrusion 2211 of the first holder 2210 and the protrusion 2311 of the second holder 2310. The first hole 2113 may be formed in a connecting plate of the housing 2110. During a manufacturing test, the protrusion 2211 of the first holder 2210 and the protrusion 2311 of the second holder 2310 exposed through the first hole 2113 may be checked to determine whether the lens driving device 2000 is operating normally.

[0217] The housing 2110 may include a plate 2113-1. The plate 2113-1 may cover the first hole 2113. The plate 2113-1 may be disposed in the first hole 2113 to close the first hole 2113.

[0218] The housing 2110 may include a second hole 2114. The second hole 2114 may be a coil accommodating hole in which the first coil 2412 and the second coil 2422 are disposed. The first coil 2412 and the second coil 2422 may be disposed in the second hole 2114. The second hole 2114 may be formed larger than the first coil 2412 and the second coil 2422.

[0219] The housing 2110 may include a protrusion 2115. The protrusion 2115 may be formed on the second housing 2110-2. The protrusion 2115 may be formed as a two-stage protrusion. The protrusion 2115 may be coupled to a guide rail 2130. The protrusion 2115 may be coupled to the first housing 2110-1. The guide rail 2130 may be coupled to a larger diameter portion of the protrusion 2115, and the first housing 2110-1 may be coupled to a smaller diameter portion of the protrusion 2115.

[0220] The protrusion 2115 may include a first protrusion 2115-1. The first protrusion 2115-1 may include a first portion having a first diameter (D2) and a second portion protruding from the first portion and having a second diameter (D1). The protrusion 2115 may include a second protrusion 2115-2. The second protrusion 2115-2 may include a third portion having a third diameter (D3) and a fourth portion protruding from the third portion and having a fourth diameter (D4). In this case, the fourth diameter (D4) may be smaller than the second diameter (D1). This allows the first protrusion 2115-1 to be more tightly coupled to the first housing 2110-1 than the second protrusion 2115-2.

[0221] The housing 2110 may include a guide protrusion 2116. The guide protrusion 2116 may be formed on the inner surface of the housing 2110. The guide protrusion 2116 may be formed in a shape corresponding to the shape of at least a portion of the first holder 2210 and the second holder 2310. As a result, the guide protrusion 2116 may guide the movement of the first holder 2210 and the second holder 2310 in the optical axis direction. In this case, the optical axis direction may be the z-axis direction, which is perpendicular to the x-axis and y-axis. The guide protrusion 2116 may be disposed in the optical axis direction. The guide protrusion 2116 may extend in the optical axis direction.

[0222] The housing 2110 may include a groove 2117. The groove 2117 may be formed in the first housing 2110-1. The groove 2117 of the first housing 2110-1 may be coupled with the protrusion 2115 of the second housing 2110-2.

[0223] The housing 2110 may include a protrusion 2118. The protrusion 2118 may be coupled to the substrate 2140. The protrusion 2118 may be inserted into a groove in the substrate 2140. The protrusions 2118 may be formed with a corresponding size and shape to fit into the grooves in the substrate 2140 .

[0224] The housing 2110 may include a vent 2119. The vent 2119 may be formed on a rear panel of the housing 2110. The vent 2119 may form a gap between the housing 2110 and the dummy glass 2600. Air may flow through the gap between the housing 2110 and the dummy glass 2600. Gas generated during the curing process of the adhesive may escape through the vent 2119.

[0225] The lens driving device 2000 may include a first lens 2120. Alternatively, the first lens 2120 may be described as a component of the camera device 10, rather than as a component of the lens driving device 2000. The fixing unit 2100 may include the first lens 2120. The first lens 2120 may be disposed on the optical axis. The first lens 2120 may be disposed between the reflective member 1220 and the image sensor 3400. The first lens 2120 may be disposed between the reflective member 1220 and the second lens 2220. The first lens 2120 may be disposed within the first housing 2110-1. The first lens 2120 may be fixed to the first housing 2110-1. The first lens 2120 can maintain a fixed state even when the second lens 2220 and the third lens 2320 move.

[0226] The first lens 2120 may be a first group lens. The first lens 2120 may include multiple lenses. The first lens 2120 may include three lenses.

[0227] The lens driving device 2000 may include a guide rail 2130. The fixed part 2100 may include the guide rail 2130. The guide rail 2130 may be coupled between the first housing 2110-1 and the second housing 2110-2. The guide rail 2130 may guide the movement of the first holder 2210 and the second holder 2310. The rail 2130 may guide the first holder 2210 and the second holder 2310 to move in the optical axis direction. The guide rail 2130 may include a rail disposed in the optical axis direction. The guide rail 2130 may include a rail extending in the optical axis direction. The guide rail 2130 may include a rail formed so that the ball 2500 can roll on it.

[0228] The lens driving device 2000 may include a substrate 2140. The fixed part 2100 may include the substrate 2140. The substrate 2140 may be disposed on both sides of the housing 2110. The substrate 2140 may be an FPCB. A first coil 2412 and a second coil 2422 may be disposed on the substrate 2140.

[0229] The substrate 2140 may include a first region 2140-1. The first region 2140-1 may be formed at an end of the substrate 2140. Terminals may be arranged in the first region 2140-1. The substrate 2140 may include a second region 2140-2. The first region 2140-1 of the substrate 2140 may be bent inward relative to the second region 2140-2. This may minimize the size of the printed circuit board 3300 while ensuring a soldering arrangement area that connects the terminals of the substrate 2140 to the printed circuit board 3300. The first region 2140-1 may form an obtuse angle with the second region 2140-2.

[0230] The substrate 2140 may include a first substrate 2141. The first substrate 2141 may be disposed on one side of the housing 2110. A first coil 2412 may be disposed on the first substrate 2141. First and second Hall sensors 2413 and 2414 may be disposed on the first substrate 2141.

[0231] The substrate 2140 may include a second substrate 2142. The second substrate 2142 may be disposed on the other side of the housing 2110. The second substrate 2142 may be disposed on the opposite side of the first substrate 2141. A second coil 2422 may be disposed on the second substrate 2142. Third and fourth Hall sensors 2423 and 2424 may be disposed on the second substrate 2142.

[0232] The lens driving device 2000 may include a suspension (SUS) 2145. The suspension 2145 may be disposed on the substrate 2140. The suspension 2145 can reinforce the strength of the substrate 2140. The suspension 2145 can dissipate heat generated in the substrate 2140.

[0233] The lens driving device 2000 may include an EEPROM 2150. The EEPROM 2150 may be electrically connected to the first coil 2412 and the second coil 2422. The EEPROM 2150 may be used to control the current applied to the first coil 2412 and the second coil 2422 before connecting the lens driving device 2000 to the driver IC 3900 during manufacturing. That is, the EEPROM 2150 may be used to test whether the lens driving device 2000 is operating normally. The EEPROM 2150 may be disposed on the inner surface of the substrate 2140.

[0234] The lens driving device 2000 may include a first moving unit 2200. The first moving unit 2200 is movable relative to the fixed unit 2100. At least a portion of the first moving unit 2200 may be disposed between the fixed unit 2100 and the second moving unit 2300. The first moving unit 2200 is movable between the fixed unit 2100 and the second moving unit 2300.

[0235] The lens driving device 2000 may include a first holder 2210. The first moving unit 2200 may include the first holder 2210. The first holder 2210 may be disposed within a housing 2110. The first holder 2210 may move relative to the housing 2110. At least a portion of the first holder 2210 may be spaced apart from the housing 2110. The first holder 2210 may come into contact with the housing 2110. The first holder 2210 may come into contact with the housing 2110 during movement. Alternatively, the first holder 2210 may come into contact with the housing 2110 in an initial state.

[0236] The first holder 2210 may include a protrusion 2211. The protrusion 2211 may be a test protrusion. The protrusion 2211 may be formed on the outer surface of the first holder 2210. The protrusion 2211 may protrude from the first holder 2210. The protrusion 2211 may be visible from the outside through the first hole 2113 of the housing 2110. The protrusion 2211 may be used when testing whether the lens driving device 2000 is operating normally. The protrusion 2211 may include a flat surface 2211-1 and an inclined surface 2211-2.

[0237] The first holder 2210 may include a rail groove 2212. A ball 2500 may be disposed in the rail groove 2212. The ball 2500 can roll in the rail groove 2212. The rail groove 2212 and the ball 2500 can contact each other at two points. The rail groove 2212 may be disposed in the optical axis direction. The rail groove 2212 can extend in the optical axis direction.

[0238] The rail groove 2212 may include a plurality of rail grooves. The rail groove 2212 may include four rail grooves. The rail groove 2212 may include first to fourth rail grooves. One or more balls 2500 may be disposed in each of the plurality of rail grooves 2212.

[0239] The first holder 2210 may include a protrusion 2213. The protrusion 2213 may be formed on a surface of the first holder 2210 facing the first housing 2110-1. The protrusion 2213 may come into contact with the first housing 2110-1 when the first holder 2210 moves toward the first housing 2110-1. In this case, when the protrusion 2213 is formed, the contact area between the first holder 2210 and the first housing 2110-1 can be reduced compared to when the protrusion 2213 is omitted. As a result, impact and noise generated by contact between the first holder 2210 and the first housing 2110-1 can be minimized.

[0240] The lens driving device 2000 may include a second lens 2220. Alternatively, the second lens 2220 may be described as a component of the camera device 10 rather than a component of the lens driving device 2000. The first moving unit 2200 may include the second lens 2220. The second lens 2220 may be disposed on the optical axis. The second lens 2220 may be disposed between the reflective member 1220 and the image sensor 3400. The second lens 2220 may be disposed between the first lens 2120 and the third lens 2320. The second lens 2220 may be disposed within the first holder 2210. The second lens 2220 may be coupled to the first holder 2210. The second lens 2220 may be fixed to the first holder 2210. The second lens 2220 may be movable relative to the first lens 2120. The second lens 2220 may be movable independently of the third lens 2320.

[0241] The second lens 2220 may be a second group of lenses. The second lens 2220 may include multiple lenses. The second lens 2220 may include two lenses.

[0242] The lens driving device 2000 may include a second moving unit 2300. The second moving unit 2300 is movable relative to the fixed unit 2100. The second moving unit 2300 is movable independently of the first moving unit 2200. The second moving unit 2300 may be disposed behind the first moving unit 2200. The second moving unit 2300 is movable in a direction toward and away from the first moving unit 2200.

[0243] The lens driving device 2000 may include a second holder 2310. The second moving unit 2300 may include the second holder 2310. The second holder 2310 may be disposed within the housing 2110. The second holder 2310 may move relative to the housing 2110. At least a portion of the second holder 2310 may be spaced apart from the housing 2110. The second holder 2310 may contact the housing 2110. The second holder 2310 may contact the housing 2110 during movement. Alternatively, the second holder 2310 may contact the housing 2110 in the initial state. The second holder 2310 may contact the first holder 2210. The second holder 2310 may be spaced apart from the first holder 2210. The second holder 2310 may contact the first holder 2210 during movement. Alternatively, the second holder 2310 may contact the first holder 2210 in the initial state.

[0244] The second holder 2310 may include a protrusion 2311. The protrusion 2311 may be a test protrusion. The protrusion 2311 may be formed on the outer surface of the second holder 2310. The protrusion 2311 may protrude from the second holder 2310. The protrusion 2311 may be visible from the outside through the first hole 2113 of the housing 2110. The protrusion 2311 may be used when testing whether the lens driving device 2000 is operating normally. The protrusion 2311 may include a flat surface 2311-1 and an inclined surface 2311-2.

[0245] The second holder 2310 may include a rail groove 2312. A ball 2500 may be disposed in the rail groove 2312. The ball 2500 can roll in the rail groove 2312. The rail groove 2312 and the ball 2500 can contact each other at two points. The rail groove 2312 may be disposed in the optical axis direction. The rail groove 2312 can extend in the optical axis direction.

[0246] The rail groove 2312 may include a plurality of rail grooves. The rail groove 2312 may include four rail grooves. The rail groove 2312 may include first to fourth rail grooves. One or more balls 2500 may be disposed in each of the plurality of rail grooves 2312.

[0247] The second holder 2310 may include a protrusion 2313. The protrusion 2313 may be formed on a surface of the second holder 2310 facing the first holder 2210. The protrusion 2313 may come into contact with the first holder 2210 when the second holder 2310 moves toward the first holder 2210. In this case, when the protrusion 2313 is formed, the contact area between the second holder 2310 and the first holder 2210 can be reduced compared to when the protrusion 2313 is omitted. As a result, the impact and noise generated by the contact between the second holder 2310 and the first holder 2210 can be minimized.

[0248] The lens driving device 2000 may include a third lens 2320. Alternatively, the third lens 2320 may be described as a component of the camera device 10 rather than a component of the lens driving device 2000. The second moving unit 2300 may include a third lens 2320. The third lens 2320 may be disposed on the optical axis. The third lens 2320 may be disposed between the reflective member 1220 and the image sensor 3400. The third lens 2320 may be disposed between the second lens 2220 and the image sensor 3400. The third lens 2320 may be disposed within the second holder 2310. The third lens 2320 may be coupled to the second holder 2310. The third lens 2320 may be fixed to the second holder 2310. The third lens 2320 may be movable relative to the first lens 2120. The third lens 2320 may be movable independently of the second lens 2220.

[0249] The third lens 2320 may be a third group of lenses. The third lens 2320 may include multiple lenses. The third lens 2320 may include two lenses.

[0250] The lens driving device 2000 may include a driving unit 2400. The driving unit 2400 can move at least some of the lenses. The driving unit 2400 can move the first moving unit 2200 and the second moving unit 2300 relative to the fixed unit 2100. The driving unit 2400 may include a coil and a magnet. The driving unit 2400 may move the first moving unit 2200 and the second moving unit 2300 through electromagnetic interaction. In a modified example, the driving unit 2400 may include a shape memory alloy.

[0251] The driving unit 2400 may include a first driving unit 2410. The first driving unit 2410 may move the first moving unit 2200 relative to the fixed unit 2100. The first driving unit 2410 may move the first moving unit 2200 relative to the second moving unit 2300. The first driving unit 2410 may be used to drive a zoom function. Alternatively, the first driving unit 2410 may be used to drive an autofocus function.

[0252] The first driving unit 2410 may include a first driving magnet 2411. The first driving magnet 2411 may be disposed on the first holder 2210. The first driving magnet 2411 may be disposed on a side of the first holder 2210. The first driving magnet 2411 may be coupled to the first holder 2210. The first driving magnet 2411 may be fixed to the first holder 2210. The first driving magnet 2411 may be fixed to the first holder 2210 with an adhesive. The first driving magnet 2411 may move integrally with the first holder 2210. The first driving magnet 2411 may be disposed to face the first coil 2412. The first driving magnet 2411 may face the first coil 2412. The first driving magnet 2411 may be disposed at a position corresponding to the first coil 2412. The first driving magnet 2411 may interact with the first coil 2412. The first drive magnet 2411 can electromagnetically interact with the first coil 2412 .

[0253] The first drive magnet 2411 can include a first magnet portion 2411-1. The first magnet portion 2411-1 may have a first polarity. The first driving magnet 2411 may include a second magnet portion 2411-2. The second magnet portion 2411-2 may have a second polarity different from the first polarity. In this case, the first polarity may be a north pole and the second polarity may be a south pole. Conversely, the first polarity may be a south pole and the second polarity may be a north pole.

[0254] The first drive magnet 2411 may include a neutral portion 2411-3. The neutral portion 2411-3 may be disposed between the first magnet portion 2411-1 and the second magnet portion 2411-2. The neutral portion 2411-3 may have a neutral polarity. The neutral portion 2411-3 may be a portion that is not magnetized.

[0255] The first actuator 2410 may include a first coil 2412. The first coil 2412 may be disposed on the substrate 2140. The first coil 2412 may be disposed on the first substrate 2141. The first coil 2412 may be disposed on the housing 2110. The first coil 2412 may be disposed outside the first holder 2210. When a current is applied to the first coil 2412, an electromagnetic field is formed around the first coil 2412, which may interact with the first actuator magnet 2411.

[0256] In a variant, the first coil 2412 may be disposed in the first holder 2210 and the first drive magnet 2411 may be disposed in the housing 2110 .

[0257] The first coil 2412 may be formed in a ring shape. The first coil 2412 may be formed in a square ring or a circular ring. Even if the first coil 2412 is formed in a square ring shape, the corners may be curved. The first coil 2412 may include a first portion 2412-1 and a second portion 2412-2 having a gap G1 therebetween. First and second Hall sensors 2413 and 2414 may be disposed in the gap G1 of the first coil 2412.

[0258] The lens driving device 2000 may include a Hall sensor. The Hall sensor may sense the first driving magnet 2411. The Hall sensor may include a plurality of Hall sensors. The Hall sensor may include a first Hall sensor 2413 and a second Hall sensor 2414. The first Hall sensor 2413 and the second Hall sensor 2414 may be spaced apart from each other. The first Hall sensor 2413 and the second Hall sensor 2414 may be spaced apart such that a gap G2 is formed therebetween. The first hall sensor 2413 and the second hall sensor 2414 can sense the first driving magnet 2411. The first hall sensor 2413 and the second hall sensor 2414 can sense the magnetic force of the first driving magnet 2411. The first hall sensor 2413 and the second hall sensor 2414 can sense the position of the first holder 2210. The first hall sensor 2413 and the second hall sensor 2414 can sense the position of the second lens 2220.

[0259] The lens driving device 2000 may include a yoke 2415. The yoke 2415 may be disposed between the first driving magnet 2411 and the first holder 2210. The yoke 2415 may be formed in a shape corresponding to the first driving magnet 2411. The yoke 2415 may increase the interaction force between the first driving magnet 2411 and the first coil 2412.

[0260] The yoke 2415 may include an extension 2415-1. The extension 2415-1 may wrap around the front and rear sides of the first drive magnet 2411. The yoke 2415 may include a groove 2415-2. The groove 2415-2 may be formed in the center of the main body of the yoke 2415.

[0261] The driving unit 2400 may include a second driving unit 2420. The second driving unit 2420 may move the second moving unit 2300 relative to the fixed unit 2100. The second driving unit 2420 may move the second moving unit 2300 relative to the first moving unit 2200. The second driving unit 2420 may be used to drive an autofocus function. Alternatively, the second driving unit 2420 may be used to drive a zoom function.

[0262] The second driving unit 2420 may include a second driving magnet 2421. The second driving magnet 2421 may be disposed on the second holder 2310. The second driving magnet 2421 may be disposed on a side of the second holder 2310. The second driving magnet 2421 may be coupled to the second holder 2310. The second driving magnet 2421 may be fixed to the second holder 2310. The second driving magnet 2421 may be fixed to the second holder 2310 with an adhesive. The second driving magnet 2421 may move integrally with the second holder 2310. The second driving magnet 2421 may be disposed to face the second coil 2422. The second driving magnet 2421 may face the second coil 2422. The second driving magnet 2421 may be disposed at a position corresponding to the second coil 2422. The second driving magnet 2421 may interact with the second coil 2422. The second drive magnet 2421 can electromagnetically interact with the second coil 2422 .

[0263] The second driving unit 2420 may include a second coil 2422. The second coil 2422 may be disposed on the substrate 2140. The second coil 2422 may be disposed on the second substrate 2142. The second coil 2422 may be disposed on the housing 2110. The second coil 2422 may be disposed outside the second holder 2310. When a current is applied to the second coil 2422, an electromagnetic field is formed around the second coil 2422, which may interact with the second driving magnet 2421.

[0264] In a variant, the second coil 2422 may be disposed in the second holder 2310 and the second drive magnet 2421 may be disposed in the housing 2110 .

[0265] The lens driving device 2000 may include a Hall sensor. The Hall sensor may sense the second driving magnet 2421. The Hall sensor may include a plurality of Hall sensors. The Hall sensor may include a third Hall sensor 2423 and a fourth Hall sensor 2424. The third Hall sensor 2423 and the fourth Hall sensor 2424 may be spaced apart from each other. The third Hall sensor 2423 and the fourth Hall sensor 2424 may be spaced apart such that a gap G2 is formed therebetween. The third Hall sensor 2423 and the fourth Hall sensor 2424 can sense the second driving magnet 2421. The third Hall sensor 2423 and the fourth Hall sensor 2424 can sense the magnetic force of the second driving magnet 2421. The third Hall sensor 2423 and the fourth Hall sensor 2424 can sense the position of the second holder 2310. The third Hall sensor 2423 and the fourth Hall sensor 2424 can sense the position of the third lens 2320.

[0266] The lens driving device 2000 may include a yoke 2425. The yoke 2425 may be disposed between the second driving magnet 2421 and the second holder 2310. The yoke 2425 may be formed in a shape corresponding to the second driving magnet 2421. The yoke 2425 may increase the interaction force between the second driving magnet 2421 and the second coil 2422.

[0267] The lens driving device 2000 may include a first yoke 2430. The first yoke 2430 may be disposed so that an attractive force acts between the first driving magnet 2411 and the first yoke 2430. The first yoke 2430 may be disposed on the housing 2110. The first yoke 2430 may be disposed on the substrate 2140. The first yoke 2430 may be disposed on the first substrate 2141. Due to the attractive force between the first driving magnet 2411 and the first yoke 2430, the first holder 2210 can press the ball 2500 toward the guide rail 2130. That is, due to the attractive force between the first driving magnet 2411 and the first yoke 2430, the ball 2500 can be maintained between the first holder 2210 and the guide rail 2130 without falling off.

[0268] The lens driving device 2000 may include a second yoke 2440. The second yoke 2440 may be disposed so that an attractive force acts between the second yoke 2440 and the second driving magnet 2421. The second yoke 2440 may be disposed on the housing 2110. The second yoke 2440 may be disposed on the substrate 2140. The second yoke 2440 may be disposed on the second substrate 2142. Due to the attractive force between the second drive magnet 2421 and the second yoke 2440, the second holder 2310 can press the ball 2500 toward the guide rail 2130. That is, due to the attractive force between the second drive magnet 2421 and the second yoke 2440, the ball 2500 can be maintained between the second holder 2310 and the guide rail 2130 without falling off.

[0269] The lens driving device 2000 may include a ball 2500. The ball 2500 may guide the movement of the first holder 2210. The ball 2500 may be disposed between the first holder 2210 and the guide rail 2130. The ball 2500 may guide the movement of the second holder 2310. The ball 2500 may be disposed between the second holder 2310 and the guide rail 2130. The ball 2500 may be formed in a spherical shape. The ball 2500 may roll in the rail groove 2212 of the first holder 2210 and the rail 2133 of the guide rail 2130. The ball 2500 may move in the optical axis direction between the rail groove 2212 of the first holder 2210 and the rail 2133 of the guide rail 2130. The ball 2500 may roll in the rail groove 2312 of the second holder 2310 and the rail 2133 of the guide rail 2130. The balls 2500 can move in the optical axis direction between the rail groove 2312 of the second holder 2310 and the rail 2133 of the guide rail 2130. The balls 2500 can include multiple balls. Four balls 2500 are provided in the first holder 2210 and four balls are provided in the second holder 2310, for a total of eight balls 2500.

[0270] The lens driving device 2000 may include a dummy glass 2600. The dummy glass 2600 may be disposed in the housing 2110. The dummy glass 2600 may close a rear opening of the housing 2110. The dummy glass 2600 may be formed to be transparent so that light can pass through.

[0271] The lens driving device 2000 may include borons 2700. The borons 2700 may be shock absorbing members. The borons 2700 may minimize the impact and noise generated by the movement of the first holder 2210 and the second holder 2310. The borons 2700 may be disposed at a portion where the first holder 2210 collides with the housing 2110. The borons 2700 may be disposed at a portion where the second holder 2310 collides with the housing 2110.

[0272] 53 to 55 are diagrams for explaining the implementation of the zoom function and autofocus function of the lens driving device according to the first embodiment of the present invention.

[0273] In the first embodiment of the present invention, in the initial state where no current is supplied to the driver 2400, the first lens 2120, the second lens 2220, and the third lens 2320 can be aligned with the optical axis (OA) (see FIG. 53).

[0274] At this time, when a current is applied to the first coil 2412, the second lens 2220 can move along the optical axis (OA) due to electromagnetic interaction between the first coil 2412 and the first drive magnet 2411 (see FIG. 54A). With the first lens 2120 fixed, the zoom function is performed as the second lens 2220 moves. When a current in a first direction is applied to the first coil 2412, the second lens 2220 can move in a direction toward the first lens 2120. When a current in a second direction opposite to the first direction is applied to the first coil 2412, the second lens 2220 can move in a direction away from the first lens 2120.

[0275] On the other hand, when a current is applied to the second coil 2422, electromagnetic interaction between the second coil 2422 and the second drive magnet 2421 causes the third lens 2320 to move along the optical axis (OA) (see FIG. 55b). The autofocus (AF) function is achieved by the relative movement of the third lens 2320 with respect to the first lens 2120 and the second lens 2220. When a current in a first direction is applied to the second coil 2422, the third lens 2320 moves toward the first lens 2120. When a current in a second direction opposite to the first direction is applied to the second coil 2422, the third lens 2320 moves away from the first lens 2120.

[0276] A camera device according to a first embodiment of the present invention will be described below with reference to the drawings.

[0277] FIG. 1 is a perspective view of a camera device according to a first embodiment of the present invention, FIG. 2 is a bottom perspective view of a camera device according to a first embodiment of the present invention, FIG. 3 is a plan view of a camera device according to a first embodiment of the present invention, FIG. 4 is a cross-sectional view taken along line AA in FIG. 3, FIG. 5 is a cross-sectional view taken along line BB in FIG. 3, FIG. 6 is a cross-sectional view taken along line CC in FIG. 3, FIG. 7 is an exploded perspective view of a camera device according to a first embodiment of the present invention, FIG. 8 is a perspective view of a camera device according to a first embodiment of the present invention from which a cover member has been omitted, FIG. 56 is a perspective view of a portion of the configuration of a camera device according to a first embodiment of the present invention, and FIG. 57 is an exploded perspective view of an image sensor, filter and related configuration of a camera device according to a first embodiment of the present invention.

[0278] The camera device 10 may include a cover member 3100. The cover member 3100 may be a 'cover can' or a 'shield can'. The cover member 3100 may be arranged to cover the reflecting member driving device 1000 and the lens driving device 2000. The cover member 3100 may be arranged outside the reflecting member driving device 1000 and the lens driving device 2000. The cover member 3100 may encase the reflecting member driving device 1000 and the lens driving device 2000. The cover member 3100 may house the reflecting member driving device 1000 and the lens driving device 2000. The cover member 3100 may be made of a metal material. The cover member 3100 is configured to prevent electromagnetic interference (EMI). It can block out interference.

[0279] The cover member 3100 may include an upper plate 3110. The upper plate 3110 may include an opening or a hole. Light may be incident through the opening or the hole of the upper plate 3110. The opening or the hole of the upper plate 3110 may be formed at a position corresponding to the reflective member 1220.

[0280] The cover member 3100 may include a side plate 3120. The side plate 3120 may include a plurality of side plates. The side plate 3120 may include four side plates. The side plate 3120 may include first to fourth side plates. The side plates 3120 may include first and second side plates arranged opposite each other, and third and fourth side plates arranged opposite each other.

[0281] The camera device 10 may include a printed circuit board (PCB) 3300. The printed circuit board 3300 may be a substrate or a circuit board. A sensor base 3500 may be disposed on the printed circuit board 3300. The printed circuit board 3300 may be electrically connected to the reflective member driving device 1000 and the lens driving device 2000. The printed circuit board 3300 may include various circuits, elements, a control unit, etc. for converting an image formed on the image sensor 3400 into an electrical signal and transmitting the signal to an external device.

[0282] The printed circuit board 3300 may include a marking portion 3310. The marking portion 3310 may be disposed on the rear surface of the printed circuit board 3300.

[0283] The camera device 10 may include a suspension (SUS) 3320. The suspension 3320 may be disposed on the rear surface of the printed circuit board 3300. The suspension 3320 can reinforce the strength of the printed circuit board 3300. The suspension 3320 can dissipate heat generated in the printed circuit board 3300.

[0284] The camera device 10 may include an image sensor 3400. The image sensor 3400 may be disposed on a printed circuit board 3300. Light that has passed through a lens and a filter 3600 may be incident on the image sensor 3400 to form an image. The image sensor 3400 may be electrically connected to the printed circuit board 3300. For example, the image sensor 3400 may be bonded to the printed circuit board 3300 using surface mounting technology (SMT). In another example, the image sensor 3400 may be bonded to the printed circuit board 3300 using flip chip technology. The image sensor 3400 may be disposed so that its optical axis coincides with that of a lens. The optical axis of the image sensor 3400 and the optical axis of the lens are aligned. The image sensor 3400 may convert light irradiated onto an effective image area of ​​the image sensor 3400 into an electrical signal. The image sensor 3400 may be a charge coupled device (CCD) or a charge-coupled device (CCD). The semiconductor device may include one or more of a charge coupled device, a charge coupled device, a metal oxide semi-conductor (MOS), a metal oxide semiconductor, a CPD, and a CID.

[0285] The camera device 10 may include a sensor base 3500. The sensor base 3500 may be disposed on the printed circuit board 3300. A filter 3600 may be disposed on the sensor base 3500. An opening may be formed in the portion of the sensor base 3500 where the filter 3600 is disposed so that light passing through the filter 3600 can be incident on the image sensor 3400.

[0286] The camera device 10 may include a filter 3600. The filter 3600 may serve to block light of a specific frequency band from entering the image sensor 3400 among light passing through the lens. The filter 3600 may be disposed between the lens and the image sensor 3400. The filter 3600 may be disposed in the sensor base 3500. The filter 3600 may include an infrared filter. The infrared filter may block light in the infrared region from entering the image sensor 3400.

[0287] The camera device 10 may include a substrate 3700. The substrate 3700 may be coupled to the printed circuit board 3300. The substrate 3700 may extend from the printed circuit board 3300. The substrate 3700 may include a terminal that is electrically coupled to the reflective member driving device 1000. The substrate 3700 may include an extension that extends outward.

[0288] The camera device 10 may include a connector 3710. The connector 3710 may be disposed on the substrate 3700. The connector 3710 may be disposed on the underside of the extension of the substrate 3700. The connector 3710 may be coupled to a power supply unit of a smartphone, for example.

[0289] The camera device 10 may include a temperature sensor 3800. The temperature sensor 3800 may sense temperature. The temperature sensed by the temperature sensor 3800 may be used for more accurate control of one or more of an image stabilization function, an autofocus function, and a zoom function.

[0290] The camera device 10 may include a driver IC 3900. The driver IC 3900 may be electrically connected to the lens driving device 2000. The driver IC 3900 may be described as one component of the lens driving device 2000. The driver IC 3900 may be electrically connected to the first coil 2412 and the second coil 2422 of the lens driving device 2000. The driver IC 3900 may supply current to the first coil 2412 and the second coil 2422 of the lens driving device 2000. The driver IC 3900 may control at least one of the voltage and the current applied to each of the first coil 2412 and the second coil 2422 of the lens driving device 2000. The driver IC 3900 may be electrically connected to the Hall sensors 2413, 2414, 2423, and 2424. The driver IC 3900 can feedback control the voltage and current applied to the first coil 2412 and the second coil 2422 based on the positions of the second lens 2220 and the third lens 2320 sensed by the Hall sensors 2413, 2414, 2423, and 2424.

[0291] An optical device according to a first embodiment of the present invention will be described below with reference to the drawings.

[0292] FIG. 58 is a perspective view of the front surface of the optical apparatus according to the first embodiment of the present invention, and FIG. 59 is a perspective view of the rear surface of the optical apparatus according to the first embodiment of the present invention.

[0293] The optical device 1 may include one or more of a mobile phone, a portable terminal, a mobile terminal, a smartphone, 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 system. The optical device 1 may also include any device for taking images or photographs.

[0294] The optical device 1 may include a main body 20. The optical device 1 may include a camera device 10. The camera device 10 may be disposed in the main body 20. The camera device 10 may photograph an object. The optical device 1 may include a display 30. The display 30 may be disposed in the main body 20. The display 30 may output one or more of a video and an image photographed by the camera device 10. The display 30 may be disposed on a first surface of the main body 20. The camera device 10 may be disposed on one or more of the first surface of the main body 20 and a second surface opposite to the first surface.

[0295] The camera device 10 according to the first embodiment of the present invention may be a foldable camera module. The foldable camera module may have a field of view of 15 to 40 degrees. The foldable camera module may have a focal length of 18 to 20 mm or more. The foldable camera module may be used as a rear camera of the optical device 1. A main camera having a field of view of 70 to 80 degrees may be disposed on the rear of the optical device 1. In this case, the foldable camera may be disposed next to the main camera. That is, the camera device 10 according to the first embodiment of the present invention may be applied to any one or more of the multiple rear cameras of the optical device 1. The camera device 10 according to the first embodiment of the present invention may be applied to one of two, three, four, or more rear cameras of the optical device 1.

[0296] Meanwhile, the camera device 10 according to the first embodiment of the present invention can also be disposed on the front of the optical device 1. However, if the optical device 1 has one front camera, a wide-angle camera may be applied. If the optical device 1 has two or more front cameras, one of them may be a telephoto camera as in the first embodiment of the present invention. However, as long as the focal length is not longer than that of a rear telephoto camera, a regular camera module that is not a folding camera module and does not have a reflective member may be applied.

[0297] A second embodiment of the present invention will be described below with reference to the drawings. Figure 60 is a perspective view of a camera module according to a second embodiment of the present invention, Figure 61 is a perspective view showing the cover disassembled in Figure 60, Figure 62 is a plan view showing one side of the camera module according to the second embodiment of the present invention, Figure 63 is a cross-sectional view showing B-B' in Figure 62, Figure 64 is a cross-sectional view showing A-A' in Figure 62, Figure 65 is a first exploded perspective view of a camera module according to the second embodiment of the present invention, Figure 66 is a drawing showing Figure 63 from a different angle, Figure 67 is a second exploded perspective view of a camera module according to the second embodiment of the present invention, Figure 68 is a drawing showing Figure 67 from a different angle, Figure 69 is a perspective view of a guide portion according to the second embodiment of the present invention, Figure 70 is an exploded perspective view of the second lens group and the third lens group according to the second embodiment of the present invention, and Figure 71 is a perspective view of a substrate according to the second embodiment of the present invention.

[0298] Referring to Figures 60 to 71, the camera module 4010 according to the second embodiment of the present invention may include a housing 4100, a first lens assembly 4200, a second lens assembly 4300, a third lens assembly 4400, and a substrate 4500, but may be implemented without some of these components, and other additional components are not excluded.

[0299] The camera module 4010 according to the second embodiment of the present invention may include a lens driving device. The lens driving device may include a housing 4100, a first lens assembly 4200, a second lens assembly 4300, a third lens assembly 4400, and a driving unit that moves the second lens assembly 4300 and the third lens assembly 4400. However, the camera module 4010 may be implemented without including some of these components, and additional components are not excluded.

[0300] The camera module 4010 may include a housing 4100. The housing 4100 may form the exterior of the camera module 4010. The housing 4100 may have a hexahedral shape with the interior exposed. The front and rear surfaces of the housing 4100 may be open to the outside. At least a portion of the side surface of the housing 4100 may be open to the outside. The second lens assembly 4200, the third lens assembly 4300, and a substrate 4500 may be disposed within the housing 4100. A space 4102 for accommodating the above-mentioned components may be formed within the housing 4100.

[0301] The camera module 4010 may include a lens assembly, which may be disposed within the housing 4100 or on an exterior surface of the housing 4100.

[0302] The lens assembly may include a first lens assembly 4200. The first lens assembly 4200 may be disposed on the front surface of the housing 4100. The first lens assembly 4200 may be coupled to the housing 4100. The first lens assembly 4200 may be coupled to the front of the housing 4100. A rib 4110 that protrudes outward from other regions may be disposed on the front surface of the housing 4100. A groove 4230 into which the rib 4110 is coupled may be formed on a rear surface of the first lens assembly 4200 that faces the front surface of the housing 4100. The first lens assembly 4200 and the housing 4110 may be coupled by coupling the rib 4110 and the groove 4230.

[0303] The first lens assembly 4200 may be disposed in front of the second lens assembly 4300. The first lens assembly 4200 may include a first lens group 4210. The first lens group 4210 may include at least one lens. The first lens group 4210 may be a D-cut lens. A first lens barrel 4212 accommodating the first lens group 4210 may be disposed inside the first lens assembly 4200. The first lens group 4210 may be disposed inside the first lens barrel 4212. A first shock absorbing part 4214 for absorbing shock with the second lens assembly 4300 (described later) may be disposed on the rear surface of the first lens barrel 4212. The first shock absorbing part 4214 is made of a rubber material and can absorb shock generated when the first lens barrel 4212 comes into contact with the second lens assembly 4300. The first shock absorbing portion 4214 may include a plurality of arc-shaped regions, and the plurality of regions may be arranged to face each other with the first lens group 4210 at the center.

[0304] A limiting portion 4220 may be formed on the rear surface of the first lens assembly 4200, protruding rearward from other regions to limit the movement distance of the second lens assembly 4300 (to be described later). The limiting portion 4220 may be made of a rubber material.

[0305] The first lens group 4210 may be a fixed lens fixed on the front surface of the housing 4100 .

[0306] The lens assembly may include a second lens assembly 4300. The second lens assembly 4300 may be disposed within the housing 4100. The second lens assembly 4300 may be aligned with the first lens assembly 4200 and the third lens assembly 4400. The second lens assembly 4300 may be disposed between the first lens assembly 4200 and the third lens assembly 4400. The second lens assembly 4300 may be moved in the optical axis direction by electromagnetic interaction between a first driver 4380 and a second driver 4550. The second lens assembly 4300 may be guided in its movement in the optical axis direction by a first guide unit 4350.

[0307] The second lens assembly 4300 may include a second lens barrel 4312 in which a second lens group 4310 is disposed, and a first side surface 4330 disposed on one side of the second lens barrel 4312. The second lens barrel 4312 may be formed in a cylindrical shape. The second lens group 4310 may be received inside the second lens barrel 4312. The second lens group 4310 may include at least one lens. A second shock absorbing part 4314 for absorbing a shock with a third lens assembly 4400 (described later) is disposed on the rear surface of the second lens barrel 4312, and the second shock absorbing part 4314 is made of a rubber material to absorb a shock generated when the second lens barrel 4312 comes into contact with the third lens assembly 4400. The second shock absorbing part 4314 may include a plurality of arc-shaped regions, and the plurality of regions may be disposed to face each other with the second lens group 4310 at the center.

[0308] The first side surface 4330 may be formed in a rectangular plate shape. The second lens barrel 4312 may be disposed on an inner surface of the first side surface 4330. The second lens barrel 4312 may be disposed adjacent to a front end of the first side surface 4330. The first side surface 4330 may be integrally formed with the second lens barrel 4312. A first driving unit 4380 may be disposed on an outer surface of the first side surface 4330. The first side surface 4330 may be formed with a first support unit 4331 that protrudes outward and supports a side surface of the first driving unit 4380. A first ball 4390 may be disposed on the outer surface of the first side surface 4330 outside the area where the first driving unit 4380 is disposed. The first ball 4390 may rotate along the inner surface of a first guide unit 4350, which will be described later. As a result, the second lens assembly 4300 may slide along the first guide unit 4350. The first balls 4390 may be provided in plurality and spaced apart from one another. For example, four first balls 4390 may be provided, with two disposed in a region adjacent to the front end of the first side surface 4330 and two disposed in a region adjacent to the rear end of the first side surface 4330. The four first balls 4390 may be disposed in corner regions of the outer surface of the first side surface 4330. The length of the first side surface 4330 in the optical axis direction may be longer than the length of the second lens barrel 4312 in the optical axis direction. The length of the first side surface 4330 in the optical axis direction may be longer than the sum of the lengths of the second lens barrel 4312 and a third lens barrel 4412 (described later) in the optical axis direction.

[0309] The lens assembly may include a third lens assembly 4400. The third lens assembly 4400 may be disposed within the housing 4100. The third lens assembly 4400 may be aligned with the first lens assembly 4200 and the second lens assembly 4300. The third lens assembly 4400 may be disposed behind the second lens assembly 4300. The third lens assembly 4400 may be moved in the optical axis direction by electromagnetic interaction between a third driver 4480 and a fourth driver 4570. The movement of the third lens assembly 4400 in the optical axis direction may be guided by a second guide unit 4450.

[0310] The third lens assembly 4400 may include a third lens barrel 4412 in which a third lens group 4410 is disposed, and a second side surface 4430 disposed on one side of the third lens barrel 4412. The third lens group 4410 is received inside the third lens barrel 4412. The third lens group 4410 may include at least one lens.

[0311] The second side 4430 may be formed in a rectangular plate shape. The third lens barrel 4412 may be disposed on an inner surface of the second side 4430. The third lens barrel 4412 may be disposed adjacent to a rear end of the second side 4430. The second side 4430 may be integrally formed with the third lens barrel 4412. The third driving unit 4480 may be disposed on an outer surface of the second side 4430. The second side 4430 may protrude outward to form a second support 4431 that supports a side of the third driving unit 4480. A second ball 4490 may be disposed on the outer surface of the second side 4430 outside the area where the second driving unit 4480 is disposed. The second ball 4490 may rotate along the inner surface of a second guide unit 4450, which will be described later. As a result, the third lens assembly 4400 may slide along the second guide unit 4450. The second balls 4490 may be provided in plurality and spaced apart from one another. For example, four second balls 4490 may be provided, with two disposed in a region adjacent to the front end of the second side surface 4430 and two disposed in a region adjacent to the rear end of the second side surface 4430. The four second balls 4490 may be disposed in corner regions of the outer surface of the second side surface 4430. The length of the second side surface 4430 in the optical axis direction may be longer than the length of the third lens barrel 4412 in the optical axis direction. The length of the second side surface 4430 in the optical axis direction may be longer than the sum of the lengths of the second lens barrel 4312 and the third lens barrel 4412 in the optical axis direction.

[0312] Meanwhile, a fourth lens 4140 may be disposed on the rear surface of the housing 4100 disposed behind the third lens barrel 4412. The fourth lens 4140 may be disposed to face the first lens 4210, the second lens 4310, and the third lens 4410 in the optical axis direction. The fourth lens 4140 may be fixed in the same manner as the first lens 4210.

[0313] Also, a zooming function can be realized by moving the second lens 4310 and the third lens 4410 in the optical axis direction, but is not limited thereto, and an autofocusing (AF) function can be realized by moving the second lens 4310 and the third lens 4410 in the optical axis direction. Also, the zooming function can be realized by moving one of the second lens 4310 and the third lens 4410, and the autofocusing function can be realized by moving the other lens.

[0314] The camera module 4010 may include a guide unit. The guide unit may be disposed within the housing 4100. The guide unit may be assembled within the housing 4100. The guide unit may guide movement of the second lens assembly 4300 and the third lens assembly 4400 in the optical axis direction.

[0315] The guide portion may include a first guide portion 4350. The first guide portion 4350 may be disposed within the housing 4100. The first guide portion 4350 may be disposed on one side of the second and third lens assemblies 4300 and 4400. The first guide portion 4350 may be disposed on the outer side of the first side surface 4330.

[0316] The front surface of the first guide part 4350 may be coupled to the rear surface of the first lens assembly 4200, and the rear surface of the first guide part 4350 may be coupled to the bottom surface of the space 4102 within the housing 4100. To this end, a coupling part 4352 may be disposed at the front end of the first guide part 4350, protruding outward from other regions and having a hole 4353 through which the rib 4110 passes. As a result, the rib 4110 of the housing 4100 may be coupled to the groove 4230 through the hole 4353. A rib 4355 may be formed at the rear surface of the first guide part 4350, protruding rearward from other regions. A groove (not shown) into which the rib 4355 is coupled may be disposed on the bottom surface of the housing 4100 facing the rib 4355. With the above-described structure, the first guide part 4350 can be firmly fixed to the space 4102 within the housing 4100.

[0317] The first guide part 4350 may include a first opening 4370 penetrating from the inner surface to the outer surface. The first driving part 4380 and the second driving part 4550 may be disposed to face each other through the first opening 4370 in a direction perpendicular to the optical axis direction.

[0318] First grooves 4364 and 4368 may be formed on the inner surface of the first guide portion 4350. The first ball 4390 may slide or shift along the first grooves 4364 and 4368. The first grooves 4364 and 4368 may be disposed along guidelines 4362 and 4366. In detail, the first guide portion 4350 may include a first guide line 4362 and a second guide line 4366. The first guide line 4362 and the second guide line 4366 may be disposed parallel to each other, and the first opening 4370 may be disposed therebetween. The length direction of the first guide line 4362 and the second guide line 4366 may be defined in the optical axis direction.

[0319] A 1-1 groove 4364 along which the first ball 4390 moves may be formed on an inner surface of the first guide line 4362 facing the first side surface 4330. A 1-2 groove 4368 along which the first ball 4390 moves may be formed on an inner surface of the second guide line 4366 facing the first side surface 4330.

[0320] The first grooves 4364 and 4368 may contact at least a portion of the first ball 4390. One of the first grooves 4364 and 4368 may contact a portion of the first ball 4390 at one point, and the other of the first grooves 4364 and 4368 may contact another portion of the first ball 4390 at two points. For example, the 1-1 groove 4364 has a U-shaped cross section and may contact the first ball 4390 at one point, and the 1-2 groove 4368 has a V-shaped cross section and may contact the first ball 4390 at two points. According to the second embodiment of the present invention, four first balls 4390 are arranged in each corner region of the outer surface of the first side surface 4330, so that two first balls 4390 arranged to face the first guideline 4362 can move along the 1-1 groove 4364, and two first balls 4390 arranged to face the second guideline 4366 can move along the 1-2 groove 4368.

[0321] Meanwhile, the first guide part 4350 may include a connecting part 4372 connecting the first guide line 4362 and the second guide line 4366. The connecting part 4372 may be screwed to the inner surface of the housing 4100. A plurality of the connecting parts 4372 may be provided, and may be disposed on both sides of the first opening 4370.

[0322] The guide portion may include a second guide portion 4450. The second guide portion 4450 may be disposed within the housing 4100. The second guide portion 4450 may be disposed on the other of the second and third lens assemblies 4300, 4400. The second guide portion 4450 may be disposed on the outside of the second side surface 4430.

[0323] The front surface of the second guide part 4450 may be coupled to the rear surface of the first lens assembly 4200, and the rear surface of the second guide part 4450 may be coupled to the bottom surface of the space 4102 within the housing 4100. To this end, a coupling part 4452 may be disposed at the front end of the second guide part 4450, protruding outward from other regions and having a hole 4453 through which the rib 4110 passes. As a result, the rib 4110 of the housing 4100 may pass through the hole 4453 and be coupled to the groove 4230. A rib 4455 may be formed at the rear surface of the second guide part 4450, protruding rearward from other regions. A groove (not shown) into which the rib 4455 is coupled may be disposed at the bottom surface of the housing 4100 facing the rib 4455. With the above-described structure, the second guide part 4450 can be firmly fixed to the space 4102 within the housing 4100.

[0324] The second guide unit 4450 may include a second opening 4470 penetrating from the inner surface to the outer surface. The third actuator 4480 and the fourth actuator 4570 may be disposed to face each other through the second opening 4470 in a direction perpendicular to the optical axis direction.

[0325] Second grooves 4464 and 4468 may be formed on the inner surface of the second guide portion 4450. The second ball 4490 may slide or shift along the second grooves 4464 and 4468. The second grooves 4464 and 4468 may be disposed along guidelines 4462 and 4466. In detail, the second guide portion 4450 may include a third guide line 4462 and a fourth guide line 4466. The third guide line 4462 and the fourth guide line 4466 may be disposed parallel to each other, and the second opening 4470 may be disposed therebetween. The third guide line 4462 and the fourth guide line 4466 may have lengths defined along the optical axis direction.

[0326] A 2-1 groove 4464 along which the second ball 4490 moves may be formed on an inner surface of the third guideline 4462 facing the second side surface 4430. A 2-2 groove 4468 along which the second ball 4490 moves may be formed on an inner surface of the fourth guideline 4466 facing the second side surface 4330.

[0327] The second grooves 4464 and 4468 may contact at least a portion of the second ball 4490. One of the second grooves 4464 and 4468 may contact a portion of the second ball 4490 at one point, and the other of the second grooves 4464 and 4468 may contact another portion of the second ball 4490 at two points. For example, the 2-1 groove 4464 has a V-shaped cross section and may contact the second ball 4490 at two points, and the 2-2 groove 4468 has a U-shaped cross section and may contact the second ball 4490 at one point. According to the second embodiment of the present invention, four second balls 4490 are arranged in each corner region of the outer surface of the second side surface 4430, so that two first balls 4490 arranged to face the third guideline 4462 can move along the 2-1 groove 4464, and two second balls 4490 arranged to face the fourth guideline 4466 can move along the 2-2 groove 4468.

[0328] Meanwhile, the second guide portion 4450 may include a connecting portion 4472 connecting the third guide line 4462 and the fourth guide line 4466. The connecting portion 4472 may be screwed to the inner surface of the housing 4100. A plurality of the connecting portions 4472 may be provided, and may be disposed on both sides of the second opening 4470.

[0329] The camera module 4010 may include a first driver 4380. The first driver 4380 may be disposed on the second lens assembly 4300. The first driver 4380 may include a magnet. The first driver 4380 may be disposed to face the second driver 4550. The first driver 4380 may move the second lens assembly 4300 in the optical axis direction through electromagnetic interaction with the second driver 4550. The front of the first driver 4380 is magnetized with a first polarity and the rear of the first driver 4380 is magnetized with a second polarity. The first driver 4380 may have a hexahedral shape. Meanwhile, a yoke (not shown) may be interposed between the first side surface 4330 and the first driver 4380 to prevent leakage of the magnetic field of the first driver 4380.

[0330] The camera module 4010 may include a third driver 4480. The third driver 4480 may be disposed on the third lens assembly 4400. The third driver 4480 may include a magnet. The third driver 4480 may be disposed to face the fourth driver 4570. The third driver 4480 may move the third lens assembly 4400 in the optical axis direction through electromagnetic interaction with the fourth driver 4570. The front of the third driver 4480 is magnetized with a first polarity and the rear of the third driver 4480 is magnetized with a second polarity. The third driver 4480 may have a hexahedral shape. Meanwhile, a yoke (not shown) may be interposed between the second side surface 4430 and the third driver 4480 to prevent leakage of the magnetic field of the third driver 4480.

[0331] The camera module 4010 may include a second driving unit 4550. The second driving unit 4550 may be disposed in the housing 4100. The second driving unit 4550 may be disposed in the first opening 4370. The second driving unit 4550 may include a coil. The second driving unit 4550 may be coupled to a substrate 4500, which will be described later. The second driving unit 4550 may receive a current from the substrate 4500. The second driving unit 4550 may have a square-shaped cross section.

[0332] The camera module 4010 may include a fourth driving unit 4570. The fourth driving unit 4570 may be disposed in the housing 4100. The fourth driving unit 4570 may be disposed in the second opening 4470. The fourth driving unit 4570 may include a coil. The fourth driving unit 4570 may be coupled to a substrate 4500, which will be described later. The fourth driving unit 4570 may receive a current from the substrate 4500. The fourth driving unit 4570 may have a square-shaped cross section.

[0333] The camera module 4010 may include yokes 4320 and 4420. The yokes 4320 and 4420 may be disposed outside the second actuator 4550 and the fourth actuator 4570. The yokes 4320 and 4420 may be coupled to a substrate 4500, which will be described later. The yokes 4320 and 4420 may prevent leakage of electric fields from the second actuator 4550 and the fourth actuator 4570.

[0334] The yokes 4320, 4420 may include a first yoke 4320. The first yoke 4320 may be coupled to the substrate 4500. The first yoke 4320 may be disposed outside the second actuator 4550. At least a portion of the substrate 4500 may be disposed between the first yoke 4320 and the second actuator 4550. The first yoke 4320 may be coupled to one side of the housing 4100 .

[0335] The yokes 4320 and 4420 may include a second yoke 4420. The second yoke 4420 may be coupled to the substrate 4500. The second yoke 4420 may be disposed outside the fourth actuator 4570. At least a portion of the substrate 4500 may be disposed between the second yoke 4420 and the fourth actuator 4570. The second yoke 4420 may be coupled to the other side of the housing 4100 .

[0336] Ribs 4124 may be formed on the side of the housing 4100 to connect the yokes 4320 and 4420, and holes may be formed in the yokes 4320 and 4420 through which the ribs 4124 pass.

[0337] The camera module 4010 may include a substrate 4500. The substrate 4500 may be disposed in the housing 4100. The second driving unit 4550 and the fourth driving unit 4570 may be coupled to the substrate 4500. Sensors 4555 and 4575 may be disposed on the substrate 4500. The substrate 4500 may be electrically connected to the second driving unit 4550, the fourth driving unit 4570, and the sensors 4555 and 4575 to supply current thereto.

[0338] The substrate 4500 can include a printed circuit board (PCB). The substrate 4500 can include a flexible printed circuit board (FPCB).

[0339] The substrate 4500 may include a first substrate 4510, a second substrate 4520, and a connecting substrate 4530. The first substrate 4510 may be disposed outside the first side surface 4330. The first substrate 4510 may be disposed parallel to the first side surface 4330. The second actuator 4550 may be disposed on an inner surface of the first substrate 4510, and the first yoke 4320 may be disposed on an outer surface thereof.

[0340] The second substrate 4520 may be disposed outside the second side surface 4430. The second substrate 4520 may be disposed parallel to the second side surface 4430. The fourth actuator 4570 may be disposed on an inner surface of the second substrate 4520, and the second yoke 4420 may be disposed on an outer surface thereof. The second substrate 4520 may be disposed parallel to the first substrate 4510.

[0341] The connecting substrate 4530 may be formed integrally with the first substrate 4510 and the second substrate 4520 by connecting the first substrate 4510 and the second substrate 4520. The connecting substrate 4530 may be disposed perpendicular to the first substrate 4510 or the second substrate 4520.

[0342] The camera module 4010 may include sensors 4555, 4575. The sensors 4555 and 4575 may include a first sensor 4555 disposed on the inner surface of the first substrate 4510 and a second sensor 4575 disposed on the inner surface of the second substrate 4520. The sensors 4555 and 4575 may include a Hall sensor. Based on information sensed by the sensors 4555 and 4575, a control unit may sense the positions of the second lens assembly 4300 and the third lens assembly 4400.

[0343] The first sensor 4555 may be disposed inside the second driving part 4550. The first sensor 4555 may be disposed to face the first driving part 4380 and detect the first driving part 4380.

[0344] The second sensor 4575 may be disposed inside the fourth driving part 4570. The second sensor 4575 may be disposed to face the third driving part 4480 and detect the third driving part 4480.

[0345] Meanwhile, in the second embodiment of the present invention, the sensors 4555 and 4575 detect the positions of the second lens assembly 4300 and the third lens assembly 4400 by the magnetic field of the first driving unit 4380 or the third driving unit 4480, but the second lens assembly 4300 and the third lens assembly 4400 may be provided with a separate sensor magnet (not shown) whose magnetic field is detected by the first sensor 4555 or the second sensor 4575, respectively.

[0346] The camera module 4010 according to the second embodiment of the present invention is characterized in that the optical performance of the second lens 4310 and the third lens 4410 is measured via inclined surfaces disposed on the outer surfaces of the second lens assembly 4300 and the third lens assembly 4400.

[0347] FIG. 72 is a perspective view illustrating the installation state of the second lens assembly and the third lens assembly in the housing according to the second embodiment of the present invention, and FIG. 73 is a cross-sectional view of the protrusion according to the second embodiment of the present invention.

[0348] 72 and 73, a second lens assembly 4300 and a third lens assembly 4400 according to the second embodiment of the present invention may include protrusions 4313 and 4413, respectively.

[0349] The protrusions 4313 and 4413 may include a first protrusion 4313 disposed on a side of the second lens barrel 4312 and a second protrusion 4413 disposed on a side of the third lens barrel 4412. The housing 4100 may include an opening 4105 for exposing the second lens barrel 4312 and the third lens barrel 4412 to the outside, and the protrusions 4313 and 4413 may be exposed to the outside through the opening 4105. That is, the protrusions 4313 and 4413 are visible from the outside of the housing 4100 through the opening 4105 for performance inspection. In some cases, a protruding height of the protrusions 4313 and 4413 may be adjusted to realize a structure in which the protrusions protrude to the outside of the housing 4100.

[0350] The protrusions 4313, 4413 may include inclined surfaces 4314, 4414. The inclined surfaces 4314, 4414 may be disposed on the outer surfaces of the protrusions 4313, 4413 that protrude outward.

[0351] In detail, the protrusions 4313, 4413 may have side surfaces defined by side surfaces of one end 4313a, 4413a and the other end 4313b, 4413b, and the inclined surfaces 4314, 4414 may be disposed between the one end 4313a, 4413a and the other end 4313b, 4413b. For example, the inclined surfaces 4314, 4414 may have a shape such that the length of the protrusion from the side surface of the second lens barrel 4312 or the third lens barrel 4412 increases from the one end 4313a, 4413a to the other end 4313b, 4413b. As a result, the heights of the one end 4313a, 4413a and the other end 4313b, 4413b defined from the side surface of the second lens barrel 4312 or the third lens barrel 4412 may be different from each other.

[0352] Meanwhile, in FIG. 73, the one side end 4313a, 4413a is shown as protruding a predetermined distance from the side of the second lens barrel 4312 or the side of the third lens barrel 4412, but this is not limited thereto, and the one side end 4313a, 4413a may be defined by the side of the second lens barrel 4312 or the side of the third lens barrel 4412.

[0353] According to the above structure, light emitted from an external light emitting unit is reflected by the inclined surfaces 4314 and 4414, and the reflected light is sensed by the light receiving unit, thereby measuring optical performance such as the descent and tilt of the second lens group 4310 or the third lens group 4410.

[0354] As shown, the protrusions 4313, 4413 may have inclined surfaces 4314, 4414 formed on their outer surfaces, and the remaining surfaces may have flat surfaces 4315, 4415 or curved surfaces having a predetermined curvature.

[0355] Alternatively, the inclined surfaces 4314 and 4414 may be formed on the entire outer surfaces of the protrusions 4313 and 4413, so that the inclined surfaces 4314 and 4414 can connect one end of the protrusions 4313 and 4413 to the other end of the protrusions 4313 and 4413.

[0356] In addition, the inclined surfaces 4314 and 4414 may include curved surfaces having a predetermined curvature.

[0357] Meanwhile, since the space inside the housing 4100 should be sealed from other areas after performance measurement is completed, the camera module 4010 may include a cover 4020 that covers the opening 4105. For example, the cover 4020 may be a tape coated with adhesive.

[0358] Also, as shown in the drawings, the first protrusions 4313 and the second protrusions 4413 may each be provided in plurality and arranged on a side surface of the second lens barrel 4312 and a side surface of the third lens barrel 4412 to be spaced apart in the optical axis direction. In this case, the separation distance between the plurality of first protrusions 4313 or the separation distance between the plurality of second protrusions 4413 in the optical axis direction may be 0.2 mm to 3 mm. For example, the separation distance between the plurality of first protrusions 4313 or the plurality of second protrusions 4413 in the optical axis direction may be 0.7 mm.

[0359] The above structure has the advantages that the optical performance of the lens can be easily measured through the protrusion during the assembly process of the camera module, and that the internal structure of the module can be easily maintained during use.

[0360] Meanwhile, in the second embodiment of the present invention, the first protrusion 4313 and the second protrusion 4413 have the same shape, but are not limited thereto, and the first protrusion 4313 and the second protrusion 4413 may have different shapes. For example, the angle of the inclined surface 4314 disposed on the first protrusion 4313 may be different from the angle of the inclined surface 4414 disposed on the second protrusion 4413.

[0361] As another example, the first inclined surface 4314 disposed within the first protrusion 4313 may be disposed at one end of the first protrusion 4313, and the second inclined surface 4414 disposed within the second protrusion 4413 may be disposed at the other end of the second protrusion 4413. Here, the one end of the first protrusion 4313 and the other end of the second protrusion 4413 may be symmetrical regions with respect to the optical axis direction.

[0362] Furthermore, it goes without saying that the shape between the plurality of first protrusions 4313 or the shape between the plurality of second protrusions 4413 can also be realized to have different shapes including the above-mentioned structures.

[0363] 74 and 75 are diagrams illustrating modified examples of the formation of inclined surfaces in the camera module according to the second embodiment of the present invention.

[0364] 74 and 75, the second lens assembly 4300 and the third lens assembly 4400 may include a groove 4700. In this modification, this may be realized by the bottom surface of the groove 4700.

[0365] In detail, an inclined surface 4720 may be formed on the bottom surface of the groove 4700, the distance from one end to the side of the second lens barrel 4312 or the third lens barrel 4412 becoming closer or farther from the other end. As a result, light is reflected by the inclined surface 4720, so that the optical performance of the camera module 4010 can be tested.

[0366] The grooves 4700 may be provided in plurality and may be spaced apart in the optical axis direction on a side surface of the second lens barrel 4312 or may be spaced apart in the optical axis direction on a side surface of the third lens barrel 4412. Similarly, the spacing between the grooves 4700 may be 0.2 mm to 3 mm. For example, the spacing between the grooves 4700 may be 0.7 mm.

[0367] Alternatively, as shown in the drawings, the inclined surface 4720 may be formed on a portion of the bottom surface of the groove 4700, and the remaining portion may be formed as a flat surface 4710 or a curved surface having a predetermined curvature. Thus, an inner peripheral surface 4730 of the groove 4700 connecting the side surface of the second lens barrel 4312 or the side surface of the third lens barrel 4412 to the flat surface 4710 may be formed perpendicular to the flat surface 4710.

[0368] On the other hand, it goes without saying that the inclined surface 4720 can also be realized as a curved surface having a predetermined curvature.

[0369] Meanwhile, in the second embodiment of the present invention, the groove 4700 disposed in the second lens barrel 4312 and the groove 4700 disposed in the third lens barrel 4412 are the same, but this is not limited to this, and the shapes of the groove 4700 disposed in the second lens barrel 4312 and the groove 4700 disposed in the third lens barrel 4412 may be different.

[0370] For example, the angle of the inclined surface of the groove 4700 disposed in the second lens barrel 4312 may be different from the angle of the inclined surface of the groove 4700 disposed in the third lens barrel 4412 .

[0371] In another example, the inclined surface of the groove 4700 disposed in the second lens barrel 4312 may be disposed at one end of the groove 4700, and the inclined surface of the groove 4700 disposed in the third lens barrel 4412 may be disposed at the other end of the groove 4700. Here, the one end and the other end of the groove 4700 may be symmetrical regions based on the optical axis direction.

[0372] Furthermore, it goes without saying that the plurality of inter-groove shapes formed in the second lens barrel 4312 or the plurality of inter-groove shapes formed in the third lens barrel 4412 may also be realized to have different shapes including the above-mentioned structures.

[0373] Although the first and second embodiments of the present invention have been described separately above, the lens driving device 2000 of the first embodiment can be replaced by the camera module 4010 of the second embodiment. Furthermore, some components of the lens driving device 2000 of the first embodiment may be omitted, and some components of the camera module 4010 of the second embodiment may be applied. For example, the protrusions 4313, 4413 and / or the groove 4700 of the second embodiment may be applied to the lens driving device 2000 of the first embodiment. Conversely, some components of the camera module 4010 of the second embodiment may be omitted, and some components of the lens driving device 2000 of the first embodiment may be applied.

[0374] Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art will understand that the present invention can be embodied in other specific forms without changing the technical spirit or essential characteristics thereof. Therefore, it should be understood that the embodiments described above are illustrative in all respects and are not limiting.

Claims

1. housing; a holder disposed within the housing; a reflective member disposed on the holder; a moving plate disposed between the housing and the holder; a mover rigid coupled to the holder; a damper coupled to the mover rigid; The mover rigid includes a protrusion that is coupled to the housing by the damper.

2. The actuator device according to claim 1 , wherein the housing includes a groove in which at least a portion of the protrusion is disposed.

3. 3. The actuator device according to claim 2, wherein the groove of the housing is open to the outside of the housing.

4. The actuator device according to claim 2 , wherein the protrusion of the mover rigid includes a first protruding region protruding from one side and a second protruding region protruding from the other side.

5. 5. The actuator device according to claim 4, wherein the groove of the housing includes a first groove in which at least a portion of the first protruding region is disposed and a second groove in which at least a portion of the second protruding region is disposed.

6. The actuator device according to claim 1 , wherein the protrusion is disposed in a central region of the mover rigid.

7. 3. The actuator device according to claim 2, wherein the groove of the housing is larger than the protrusion of the mover rigid and is spaced apart from the protrusion in the initial state and when driven.

8. 3. The actuator device according to claim 2, wherein the groove of the housing and the protrusion of the mover rigid can come into contact with each other upon external impact.

9. housing; a holder disposed within the housing; a reflective member disposed on the holder; a moving plate disposed between the housing and the holder; a mover rigid coupled to the holder; and a damper coupled to the mover rigid; The mover rigid includes a protrusion that is coupled to the housing by the damper.

10. a stationary part including a housing; a moving part that moves relative to the fixed part; a moving plate disposed between the fixed part and the moving part; and a damper disposed between the fixed part and the moving part; The actuator device, wherein the moving part includes a mover rigid that is bonded to the housing by the damper.

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