Zoom drive actuator

Abstract

The present application provides a zoom driving actuator, comprising: a first carrier, including a first mounting machine loaded with a first lens assembly, a first support part arranged on one side of the first mounting machine and extending in a first direction, and a first guide arranged on the other side of the first mounting machine and extending in the first direction; a second carrier, including a second mounting machine loaded with a second lens assembly, a second support part arranged on one side of the second mounting machine and extending in a second direction, and a second guide arranged on the other side of the second mounting machine and extending in the second direction, the second direction being opposite to the first direction; a first channel arranged between the first mounting machine and the first support part for the second guide to be inserted; a second channel arranged between the second mounting machine and the second support part for the first guide to be inserted; and a first damper and a second damper arranged on the first guide and the second guide respectively to limit the interval distance between the first carrier and the second carrier.

Description

TECHNICAL FIELD

[0001] The present application relates to a zoom driving actuator, and more particularly, to a zoom driving actuator capable of preventing collision caused by mutual interference between two carriers by limiting the distance between the two carriers. BACKGROUND

[0002] With the development of hardware technology for image processing, and the increase in user demand for image photography, functions such as auto focus (AF), optical image stabilization (OIS), etc. have been implemented in camera modules mounted on mobile terminals such as standalone camera devices, mobile phones, smart phones, etc.

[0003] In addition, recently, zoom lens actuators that can change the size of a photographed object, etc. in various ways by adjusting the focal length through zoom-in and zoom-out, etc. have appeared, and actuators that further diversify the zoom function by combining the positional relationship between a plurality of lenses according to the implementation form have also appeared.

[0004] With respect to such a zoom lens actuator, the movement distance (also referred to as stroke) of the zoom lens moving in the direction of the optical axis is longer or expanded compared to a general lens, and thus, a driving force corresponding thereto should be ensured.

[0005] However, in order to ensure each independent movement space of a plurality of carriers, respectively, the existing actuator is designed such that the physical structure of the driving carrier is implemented in a simple multiple form.

[0006] Therefore, the size of the actuator itself in the existing actuator is increasing, and thus, it can be said that it is difficult to apply to an application device such as a smart phone, etc. for which size or volume, etc. are important issues. SUMMARY

[0007] Technical Problem to be Solved

[0008] The present application, which is made to solve the problems in the background, aims to provide a zoom driving actuator that not only can more stably maintain the driving of each carrier, but also more effectively utilizes the space of the actuator.

[0009] In addition, the present application aims to provide a zoom actuator that can minimize noise and impact amount caused by impact when a carrier contacts a housing while the carrier is moving.

[0010] In addition, an object of the present application is to provide a zoom actuator capable of preventing collision caused by mutual interference between two carriers by limiting the distance between the two carriers.

[0011] Another object and advantage of the present application can be understood by the following description, and can be more clearly understood from the embodiments according to the present application. In addition, the object and advantage of the present application can be achieved by the structures appearing in the claims and combinations of the structures thereof.

[0012] Means for solving the problem

[0013] To achieve the above object, the present application provides a zoom driving actuator, including: a first carrier including a first mount loading a first lens assembly, a first support portion provided at one side of the first mount and extending in a first direction, and a first guide provided at the other side of the first mount and extending in the first direction; a second carrier including a second mount loading a second lens assembly, a second support portion provided at one side of the second mount and extending in a second direction, and a second guide provided at the other side of the second mount and extending in the second direction, the second direction being opposite to the first direction; a first passage provided between the first mount and the first support portion for the second guide to be inserted; a second passage provided between the second mount and the second support portion for the first guide to be inserted; and a first damper and a second damper provided at the first guide and the second guide, respectively, to limit the interval distance between the first carrier and the second carrier.

[0014] In the present application, the first guide includes a first connecting portion connected to the first mount and a first extension portion extending from the first mount, and the second guide includes a second connecting portion connected to the second mount and a second extension portion extending from the second mount.

[0015] In addition, the first damper is provided at the front surface of the first connecting portion, and the second damper is provided at the front surface of the second connecting portion.

[0016] In addition, the first support portion includes a first groove portion allowing the second damper to move, and a first stopper limiting the movement of the second damper.

[0017] In addition, the second support portion includes a second groove portion allowing the first damper to move, and a second stopper limiting the movement of the first damper.

[0018] In addition, the first damper includes a first protrusion portion protruding toward the second support portion and being fitted to the second groove portion.

[0019] In addition, the second damper includes a second protrusion portion protruding toward the first support portion and being fitted to the first groove portion.

[0020] Further, the second support portion further includes a third damper facing the first damper, and a fourth damper facing the second damper.

[0021] Further, the zoom drive actuator of the present application further includes first and second magnets installed in the first and second support portions, respectively, and first and second coil portions facing the first and second magnets, respectively.

[0022] Further, the zoom drive actuator of the present application further includes a housing accommodating the first and second carriers, and including first, second, third and fourth guide rails.

[0023] Here, the first support portion includes a first ball rail facing the first guide rail, and the first guide includes a second ball rail facing the second guide rail.

[0024] Further, the second support portion includes a third ball rail facing the third guide rail, and the second guide includes a fourth ball rail facing the fourth guide rail.

[0025] Effects of Invention

[0026] According to an embodiment of the present application, by forming the physical structure of the plurality of carriers symmetrically in opposite directions to each other, the independent movement range of each lens (lens assembly) loaded in each carrier can be sufficiently ensured.

[0027] According to an embodiment of the present application, by improving the physical structure in a form in which a part of each carrier intersects or overlaps each other, not only the independent movement of each carrier can be effectively ensured, but also the structure and shape of the entire device can be realized in a more compact space, thereby minimizing the entire space and optimizing the miniaturization of the portable terminal based thereon.

[0028] According to an embodiment of the present application, the magnet loading space is provided in a manner that each carrier is formed non-symmetrically to each other with reference to the space in which the lens is loaded, thereby being able to load a magnet of a sufficient size in each carrier, and more effectively increasing the driving force of each carrier.

[0029] According to an embodiment of the present application, by limiting the interval distance between the two carriers, the guide rails which are stacked in the direction in which the two carriers move away from each other can be prevented from being entirely exposed, thereby preventing the mutual interference between the two carriers and the collision of the two carriers. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a diagram showing the overall structure of a zoom drive actuator and a camera module according to an embodiment of the present application.

[0031] Figure 2 and Figure 3 is a diagram showing the overall structure of a zoom drive actuator according to an embodiment of the present application.

[0032] Figure 4 is an exploded view of a first carrier and a second carrier of a zoom actuator according to an embodiment of the present application.

[0033] Figure 5 and Figure 6 is a diagram showing the mutual driving relationship between the first carrier and the second carrier of a zoom actuator according to an embodiment of the present application.

[0034] Figure 7 is a diagram showing the structure of a ball track formed in a carrier and a guide track formed in a housing in a zoom actuator according to an embodiment of the present application.

[0035] Figure 8 is a diagram showing a comparative example of a zoom actuator according to an embodiment of the present application, which is a diagram when the interval distance between the first carrier and the second carrier is not limited.

[0036] Figure 9 is a diagram for explaining the structure of limiting the interval distance between the first carrier and the second carrier of a zoom actuator according to an embodiment of the present application. DETAILED DESCRIPTION

[0037] Hereinafter, preferred embodiments of the present application will be described in detail with reference to the accompanying drawings. Before such descriptions, it is to be noted that the terms or words used in the present specification and claims should not be interpreted as being common and dictionary meanings, but should be interpreted as having meanings and concepts meeting the technical ideas of the present application, based on the principle that the inventor can properly define the concepts of the terms to best explain his or her own application.

[0038] In addition, the embodiments described in the present specification and the structures shown in the accompanying drawings are only the most preferred one of the present application, and cannot represent the entire technical idea of the present application, and it is understood that the present application can have a variety of equivalents and modifications which can replace them.

[0039] Figure 1 is a diagram showing the overall structure of a zoom drive actuator according to an embodiment of the present application, and a camera module, Figure 2 and Figure 3 is a diagram showing the overall structure of a zoom drive actuator according to an embodiment of the present application.

[0040] Hereinafter, the overall structure of a zoom drive actuator according to an embodiment of the present application will be described with reference to Figures 1 to 3 Hereinafter, the overall structure of a zoom drive actuator according to an embodiment of the present application will be described with reference to

[0041] The actuator 100 of the present application is of course an independent device as shown in Figure 1 The camera module 1000 can be configured as shown in the drawing together with the reflector module 200 or the like.

[0042] As described below, the actuator 100 of the present application corresponds to an actuator that linearly moves a plurality of carriers loaded with lens assemblies in the direction of the optical axis to implement auto focus (AF) or zoom.

[0043] The reflector module 200 can be disposed in front of or above the zoom driving actuator 100 (with the direction of the optical axis as the reference) and performs the function of reflecting or refracting the light path Zl of the photographic subject into the path Z in the direction of the lens. The light thus reflected or refracted in the direction of the optical axis enters the image sensor such as a CMOS, a CCD or the like through the lens assembly disposed in the carrier.

[0044] In this way, the reflector module 200 that changes the light path can include a reflector 210 configured with one selected from a mirror or a prism or a combination thereof. The reflector 210 can be configured with a variety of materials capable of changing the light entering from the outside into the direction of the optical axis, but is preferably configured with a glass material in order to improve the optical performance.

[0045] The camera module 1000 of the present application including the reflector module 200 or the like is configured to refract the light path so that the light enters in the direction of the lens, and thus the device itself can be disposed in the length direction of the portable terminal and in the thickness direction, so that the thickness of the portable terminal is not increased and the portable terminal can be most suitable for miniaturization or thinness or the like.

[0046] According to the embodiment, the reflector 210 can also be configured to be rotationally moved by a driving member such as a magnet or a coil or the like that generates a magnetic force. Thus, when the reflector 210 is moved or rotationally moved, the light of the photographic subject reflected (refracted) by the reflector 210 moves in the ±Y direction and / or the ±X direction to enter the lens and the image pickup element, so that correction in the X-axis and / or Y-axis direction due to hand shake can be implemented.

[0047] The light of the photographic subject reflected by the reflector module 200 is incident on the first lens assembly 60 and the second lens assembly 70 or the like disposed inside the actuator 100, and in this process, the positions (with the direction of the optical axis as the reference) of the first lens assembly 60 and the second lens assembly 70 are adjustably combined, so that the functions of zoom or AF or the like are implemented.

[0048] According to the embodiment, in order to improve the optical performance such as the zoom ratio of the actuator 100 or the like, the first lens assembly 60 and the second lens assembly 70 or the like can be configured as shown in the drawing.Figure 1 As shown, a fixed lens assembly 50 can also be provided in front of the actuator 100 (with the optical axis direction as the reference).

[0049] Hereinafter, in the description of the present application, the direction axis corresponding to the path of light entering the first lens assembly 60 and the like is defined as the optical axis (Z axis), and the two axes on the plane perpendicular to the optical axis (Z axis) are defined as the X axis and the Y axis.

[0050] The fixed lens assembly 50, the first lens assembly 60, and the second lens assembly 70 are composed of one or more lenses or optical elements and a housing or the like, however, in the figure, the fixed lens assembly 50, the first lens assembly 60, and the second lens assembly 70 are shown without loading lenses or the like in order to more clearly show the internal structure.

[0051] The actuator 100 of the present application corresponds to the basic frame structure of the actuator 100, and includes a housing 110 accommodating the internal structure, a box 190 combined with the housing 110 and functioning as a shield, a first carrier 120, and a second carrier 130.

[0052] The first carrier 120 loaded with the first lens assembly 60 and the second carrier 130 loaded with the second lens assembly 70 correspond to moving bodies linearly moving along the optical axis direction (Z axis direction), and from the corresponding relative viewpoint, the housing 110 corresponds to a fixed body.

[0053] The second lens assembly 70 is loaded on the second carrier 130, and the second lens assembly 70 is loaded on the second carrier 130 in a manner located above or below the first lens assembly 60 with respect to the optical axis direction. In this state, the second carrier 130 linearly moves along the optical axis direction.

[0054] As described below, the first carrier 120 is provided with a first magnet Ml, and the housing 110 side is provided with a first coil portion (not shown) facing the first magnet Ml and providing driving force to the first magnet Ml.

[0055] When a power source of appropriate size and direction is applied to the first coil portion by control of a first drive program (not shown), an electromagnetic force is generated between the first coil portion and the first magnet Ml, and the first carrier 120 moves in and out along the optical axis direction by the generated electromagnetic force. The first coil portion and the like are provided in a state mounted on a circuit board at the open face of the housing 110.

[0056] From a similar viewpoint, when a power of a proper size and direction is applied to the second coil portion (not shown) by control of a second driver (not shown), the second carrier 130 linearly moves in the optical axis direction by electromagnetic force generated between the second magnet M2 provided in the second carrier 130 and the second coil portion. The above-described second coil portion or the like is provided to the open face of the housing 110 in a state of being mounted to a circuit board.

[0057] The first carrier 120 loaded with the first lens assembly 60 and the second carrier 130 loaded with the second lens assembly 70 are shown in the drawing, but this is an embodiment, and it is needless to say that a larger number of lens assemblies and carriers can be provided according to the embodiment.

[0058] In the following description, the carriers provided in the actuator 100 are exemplified as two for the sake of efficiency of explanation, and Figure 2 The carrier located in the upper portion (front) is called the first carrier 120, and the carrier located in the lower portion (rear) is called the second carrier 130 with the optical axis as a reference.

[0059] When the first carrier 120 and the second carrier 130 linearly move in the optical axis direction, respectively, as described above, the lens assemblies loaded in the carriers also linearly move in the optical axis direction, and AF or zoom functions are realized by the relative positional relationship of the lenses.

[0060] As described above, in order to conform to the optical performance or standards of the actuator 100 or the like, a fixed lens assembly 50 can be provided in front of the first lens assembly 60 according to the embodiment.

[0061] In addition, in order to make the first carrier 120 and the second carrier 130 linearly move more smoothly with minimized friction, it is preferable to provide balls between the first carrier 120 and the housing 110 and between the second carrier 130 and the housing 110.

[0062] A metal yoke is provided on the lower face (YZ plane) of the housing 110, and the yoke generates an attractive force with the first magnet Ml and the second magnet M2, thereby guiding the first carrier 120 and the second carrier 130 to be fitted toward the housing 110 in a state of placing the balls therebetween.

[0063] Figure 4 is an exploded view of the first carrier and the second carrier of the zoom actuator according to the embodiment of the present application, Figure 5 and Figure 6 is a view showing the mutual driving relationship between the first carrier and the second carrier of the zoom actuator according to the embodiment of the present application, Figure 7is a diagram showing a structure of a ball track formed in a carrier and a guide track formed in a housing in a zoom actuator according to an embodiment of the present application.

[0064] Reference Figures 4 to 7 , describes a coupling relationship and a mutual driving relationship between a first carrier and a second carrier of a zoom drive brake according to an embodiment of the present application.

[0065] As described above, the first carrier 120 loaded with the first lens assembly 60 is a moving body that linearly moves along the optical axis direction, and specifically includes a first mount 121 loaded with the first lens assembly 60, a first support 123 loaded with the first magnet M1, and a first guide 125.

[0066] As illustrated in the example, the first mount 121 has a space corresponding to the shape of the first lens assembly 60 to load the first lens assembly 60, and according to the embodiment, a case for preventing the first lens assembly 60 from coming off in the X-axis direction or the like can be provided at the upper portion of the first mount 121.

[0067] The first support 123 loaded with the first magnet M1 is provided at one side of the left side or the right side of the first mount 121 and extends in the first direction. That is, the first support 123 has a shape that is longer than the optical axis direction length of the first mount 121 with reference to the optical axis direction.

[0068] The first support 123 and the first mount 121 can be integrally formed, and in order to realize a physical structure that is symmetrical to the second support 133 of the second carrier 130 described later, it is preferable to have a shape that extends in one direction of the optical axis direction (Z-axis direction).

[0069] Thus, since the first support 123 of the present application has a shape that extends in the optical axis direction, it is possible to load the first magnet M1 of a size corresponding to the expanded area thereof, and thus it is possible to further improve the driving force of the first carrier 120.

[0070] In addition, the first ball track 128 is formed in the first support 123 to be provided face-to-face with the first guide track 111 formed on the housing 110. At this time, the first guide track 111 and the first ball track 128 are disposed in a form that accommodates a ball (Ball).

[0071] The first guide 125 is provided at the opposite side of the first support 123 without the first support 123 described above at the left side or the right side of the first mount 121 and extends in the first direction. That is, the first guide 125 can have a lower height (X-axis as a reference) than the first support 123 and be formed in a bar shape that is longer than the optical axis direction length of the first mount 121.

[0072] The first guide 125 is formed with a second ball rail 129 which is disposed face-to-face with the second guide rail 112 formed on the housing 110, and the second guide rail 112 and the second ball rail 129 of the present application are configured in a form in which balls are accommodated therebetween.

[0073] Thus, the first carrier 120 can more stably support movement in the optical axis direction of the first lens assembly 60 by the first support portion 123 and the first guide 125 which are located at the left and right sides, respectively, with the first mount 121 as a reference and have shapes which are more elongated than the first mount 121.

[0074] As described above, the first magnet M1 provided on the first support portion 123 of the first carrier 120 generates an attractive force with the magnetic yoke provided on the housing 110.

[0075] Therefore, the first carrier 120 of the present application is adhered toward the housing 110 while maintaining balance as a whole by the attractive force between the first magnet M1 and the magnetic yoke, and thus can more stably achieve physical guidance by the balls.

[0076] The second carrier 130 has a physical structure corresponding to the first carrier 120 described above, and as shown in the drawings, is configured in a structure which is symmetrical to the first carrier 120 in opposite directions.

[0077] Specifically, the second carrier 130 includes a second mount 131 which loads the second lens assembly 70, a second support portion 133 which loads a second magnet M2, and a second guide 135.

[0078] The second support portion 133 of the second carrier 130 is provided on one of the left side or the right side of the second mount 131 and is provided in a direction opposite to the direction toward the first support portion 123 of the first carrier 120 described above, and is elongated in a second direction opposite to the first direction. That is, the second support portion 133 can have a shape which is more elongated than the length of the second mount 131 described above in the optical axis direction, and has a shape which is elongated in a direction opposite to the direction in which the first support portion 123 of the first carrier 120 is elongated.

[0079] Thus, the first carrier 120 and the second carrier 130 have similar physical structures as a whole, and the first mount 121 which loads the first lens assembly 60 and the second mount 131 which loads the second lens assembly 70 are provided in central portions, and thus a sufficient movement distance of the first lens assembly 60 and the second lens assembly 70 can be ensured.

[0080] Meanwhile, the first magnet M1 for driving the first carrier 120 and the second magnet M2 for driving the second carrier 130 can be provided in a relatively larger size through the first support portion 123 and the second support portion 133, and thus can contribute to effectively enhancing the driving force.

[0081] The third ball rail 138 is formed on the second support portion 133 to face the third guide rail 113 formed on the housing 110, and in this case, is disposed in a form of accommodating a ball between the third guide rail 113 and the third ball rail 138.

[0082] The second guide 135 is provided to extend in the second direction on the opposite side of the second mount 131, which does not have the second support portion 133, among the left side or the right side. That is, the second guide 135 can have a lower height (X-axis as a reference) than the second support portion 133, and is formed in a bar shape that is more elongated than the optical axis direction length of the second mount 131.

[0083] The fourth ball rail 139 is formed on the second guide 135 to face the fourth guide rail 114 formed on the housing 110, and in the present application, is disposed in a form of accommodating a ball between the fourth guide rail 114 and the fourth ball rail 139.

[0084] As such, the second carrier 130 can be more stably supported to move along the optical axis direction of the second lens assembly 70 by the second support portion 133 and the second guide 135, which are located on the left side and the right side, respectively, with reference to the second mount 131, and have a more elongated shape than the second mount 131.

[0085] The second magnet M2 provided on the second support portion 133 of the second carrier 130 generates an attractive force with the magnetic yoke provided on the housing 110.

[0086] Accordingly, the second carrier 130 of the present application is adhered toward the housing 110 while maintaining balance as a whole by the attractive force between the second magnet M2 and the magnetic yoke, and thus can more stably achieve the physical guidance by the ball.

[0087] The first carrier 120 includes a first passage 127 provided between the first mount 121 and the first support portion 123, and into which the second guide 135 is inserted. The first passage 127 has an elongated shape in the optical axis direction, so that the second guide 135 of the second carrier 130 can move.

[0088] Correspondingly, the second carrier 130 includes a second passage 137 provided between the second mounter 131 and the second support 133 and into which the first guide 125 is inserted. The second passage 137 has an elongated shape in the optical axis direction, so that the first guide 125 of the first carrier 120 can move.

[0089] By the physical structure of the first passage 127 of the first carrier 120 and the second passage 137 of the second carrier 130, the first guide 125 of the first carrier 120 is inserted into the second passage 137 of the second carrier 130, and the second guide 135 of the second carrier 130 is inserted into the first passage 127 of the first carrier 120.

[0090] Therefore, the first carrier 120 and the second carrier 130 of the present application can naturally move independently, and a part of each structure can realize a physical structure in which the structures are crossed or overlapped, so that the space utilization can be further improved.

[0091] The second guide 135 of the second carrier 130 is located in the first passage 127 of the first carrier 120, and when the second carrier 130 moves, it is linearly moved in the optical axis direction by the physical guidance of the ball.

[0092] From the corresponding viewpoint, the first guide 125 of the first carrier 120 is located in the second passage 137 of the second carrier 130, and when the first carrier 120 moves, it is linearly moved in the optical axis direction by the physical guidance of the ball through the second passage 137.

[0093] In this way, a part of each of the first carrier 120 and the second carrier 130 can realize a physical structure in which the structures are stacked or overlapped, so that the independent driving of each can be ensured while the overall size is reduced, and the space utilization can be further improved.

[0094] In order to further improve the efficiency of such a space design, preferably, the first passage 127 is formed between the first mounter 121 and the first support 123, and the second passage 137 is formed between the second mounter 131 and the second support 133.

[0095] Reference Figure 7 The bottom surface (X-axis as reference) of the housing 110 is formed with a first guide rail 111, a second guide rail 112, a third guide rail 113, and a fourth guide rail 114.

[0096] The first guide rail 111, the second guide rail 112, the third guide rail 113, and the fourth guide rail 114 are structures for guiding the ball located between the first carrier 120 and the second carrier 130 and the housing 110.

[0097] The first guide rail 111 faces the first ball rail 128 formed on the first support portion 123 of the first carrier 120, and the second guide rail 112 faces the second ball rail 129 formed on the first guide 125 of the first carrier 120.

[0098] The third guide rail 113 faces the third ball rail 138 formed on the second support portion 133 of the second carrier 130, and the fourth guide rail 114 faces the fourth ball rail 139 formed on the second guide 135 of the second carrier 130.

[0099] As described above, the first carrier 120 and the second carrier 130 of the present application are formed in binary as a portion where a lens is loaded and a portion where a driving magnet is loaded, respectively, and the portion where the magnet is loaded has a shape elongated toward the optical axis direction, and the first carrier 120 and the second carrier 130 are configured as a symmetrical physical structure with respect to the direction opposite to each other.

[0100] Thus, as described above, the structure of the guide rail can be expanded more toward the optical axis direction, and on this basis, the movement distance of the first carrier 120 and the second carrier 130 in the optical axis direction can be effectively expanded without interference or physical obstruction due to movement.

[0101] Preferably, in order to achieve effective guidance of linearity, one or more of the ball rails 128, 129, 138, 139 or / and the guide rails 111, 112, 113, 114 is / are provided in a form that accommodates a portion of the ball B.

[0102] Figure 8 As a comparative example of a zoom actuator according to an embodiment of the present application, FIG. is a diagram when the interval distance between the first carrier and the second carrier is not limited, Figure 9 is a diagram for explaining a structure of limiting the interval distance between the first carrier and the second carrier of a zoom actuator according to an embodiment of the present application.

[0103] Reference Figure 8 In the zoom driving actuator 10 not having a structure of limiting the interval distance between the first carrier 20 and the second carrier 30, when the first carrier 20 and the second carrier 30 are moved in a direction in which the first carrier 20 and the second carrier 30 are away from each other after the stacked guide rails are exposed to the outside, and then the first carrier 20 and the second carrier 30 are moved in a direction in which the first carrier 20 and the second carrier 30 are close to each other, the first carrier 20 and the second carrier 30 can collide with each other due to mutual interference between the first carrier 20 and the second carrier 30. In addition, due to such a collision, the performance of the zoom driving actuator 10 can be adversely affected.

[0104] To prevent the above problems, the zoom drive brake 100 according to an embodiment of the present application includes a first damper 161 and a second damper 162 that limit the interval distance between the first carrier 120 and the second carrier 130.

[0105] Referring to Figures 4 to 6 The first guide 125 of the first carrier 120 includes a first connecting portion 125a connected to the first mount 121 and a first extension portion 125b extended from the first mount 121, and the second guide 135 of the second carrier 130 includes a second connecting portion 135a connected to the second mount 131 and a second extension portion 135b extended from the second mount 131.

[0106] The first damper 161 is disposed at a front surface of the first connecting portion 125b of the first guide 125, and the second damper 162 is disposed at a front surface of the second connecting portion 135b of the second guide 135.

[0107] The first support portion 123 of the first carrier 120 includes a first groove portion 123a that enables the second damper 162 to move and a first stopper 123b that limits the movement of the second damper 162.

[0108] The second support portion 133 of the second carrier 130 includes a second groove portion 133a that enables the first damper 161 to move and a second stopper 133b that limits the movement of the first damper 161.

[0109] The first damper 161 has a first protrusion portion 161a protruding toward the second support portion 133 and installed in the second groove portion 133a of the second support portion 133, and the second damper 162 has a second protrusion portion 162a protruding toward the first support portion 123 and installed in the first groove portion 123a of the first support portion 123.

[0110] In this way, when the first protrusion portion 161a is installed in the second groove portion 133a and presses the second support portion 133, the second protrusion portion 162a is installed in the first groove portion 123a and presses the first support portion 123, so that when the first carrier 120 and the second carrier 130 move, the warping phenomenon of the first carrier 120 and the second carrier 130 can be minimized.

[0111] Referring to Figure 9When the first carrier 120 and the second carrier 130 move in a direction away from each other ((a) and (b)), the first protrusion 161a of the first damper 161 moves along the second groove 133a of the second support 133 and is caught by the second stopper 133b to be restricted from moving, and the second protrusion 162a of the second damper 162 moves along the first groove 123a of the first support 123 and is caught by the first stopper 123b to be restricted from moving. That is, the interval distance between the first carrier 120 and the second carrier 130 is restricted.

[0112] Thus, the stacked guide rails (111, 114), (112, 113) are not all exposed to the outside, and in this case, even if the first carrier 120 and the second carrier 130 move in a direction close to each other, mutual interference between the first carrier 120 and the second carrier 130 does not occur, so that mutual collision of the first carrier 120 and the second carrier 130 can be prevented.

[0113] The second support 133 further includes a third damper 163 facing the first damper 161, and the first support 123 further includes a fourth damper 164 facing the second damper 162.

[0114] The housing 110 includes a fifth damper 165 and a sixth damper 166 in one side inner portion, and a seventh damper 167 and an eighth damper 168 in the other side inner portion.

[0115] In addition, the first carrier 120 includes a ninth damper 169 facing the fifth damper 165 and a tenth damper 170 facing the sixth damper 166, and the second carrier 130 includes an eleventh damper 171 facing the seventh damper 167 and a twelfth damper 172 facing the eighth damper 168.

[0116] The first to twelfth dampers 161 to 172 can be made of an elastic material, and dampers facing each other can be formed in the same shape, but are not limited thereto.

[0117] When such first to twelfth dampers 161 to 172 are applied to the zoom drive actuator 100, noise and impact amount caused by impact when the first carrier 120 and the second carrier 130 collide with each other or when the first carrier 120 and the second carrier 130 collide with the housing 110 can be minimized.

[0118] While the present application has been described above by the defined embodiments and the accompanying drawings, the present application is not limited to the above description, and of course, those skilled in the art to which the present application pertains can make various modifications and changes within the technical idea of the present application and the equivalent scope of the claims recited below.

[0119] In the description of the present application, the modifiers such as first and second are merely used as a tool concept for relatively distinguishing the constituent elements from each other, and cannot be interpreted as a term used to show a specific order, priority, etc.

[0120] In order to emphasize or characterize the technical contents of the present application, the accompanying drawings for illustrating the present application and the embodiments thereof, etc. can be shown in an exaggerated form, and it should be understood that, considering the above-described contents and the contents illustrated in the drawings, etc., it is obvious that those skilled in the art can derive various modified embodiments.

[0121] Symbolic notation

[0122] 1000: camera module

[0123] 50: fixed lens assembly 60: first lens assembly

[0124] 70: second lens assembly 200: reflectometer module

[0125] 100: actuator

[0126] 110: housing

[0127] 120: first carrier 121: first mount

[0128] 123: first support 125: first guide

[0129] 130: second carrier 131: second mount

[0130] 133: second support 135: second guide

[0131] 161: first damper 162: second damper

Claims

1. A zoom drive actuator characterized by, comprises a first mounter loading a first lens assembly, a first support portion extending in a first direction from one side of the first mounter, and a first guide extending in the first direction from the other side of the first mounter, comprises a second mounter loading a second lens assembly, a second support portion extending in a second direction from one side of the second mounter, and a second guide extending in the second direction from the other side of the second mounter, the second direction being opposite to the first direction; a first passage is provided between the first mounter and the first support portion for the second guide to be inserted thereinto; a second passage is provided between the second mounter and the second support portion for the first guide to be inserted thereinto; and first and second dampers are respectively provided to the first and second guides to limit the interval distance between the first and second carriers. 2.The zoom drive actuator according to claim 1, wherein the first guide comprises a first connecting portion connected to the first mounter and a first extension portion extending from the first mounter, and the second guide comprises a second connecting portion connected to the second mounter and a second extension portion extending from the second mounter. 3.The zoom drive actuator according to claim 2, wherein the first damper is provided to a front surface of the first connecting portion, and the second damper is provided to a front surface of the second connecting portion. 4.The zoom drive actuator according to claim 1, wherein the first support portion comprises: a first groove portion allowing the second damper to move; and a first stopper limiting the movement of the second damper. 5.The zoom drive actuator according to claim 4, wherein the second support portion comprises: a second groove portion allowing the first damper to move; and a second stopper limiting the movement of the first damper. 6.The zoom drive actuator according to claim 5, wherein the first damper comprises a first protrusion portion protruding toward the second support portion and fitted to the second groove portion. 7.The zoom drive actuator according to claim 5, wherein the second damper comprises a second protrusion portion protruding toward the first support portion and fitted to the first groove portion. 8.The zoom drive actuator according to claim 3, wherein the second support portion further comprises a third damper facing the first damper, and the first support portion further comprises a fourth damper facing the second damper. 9.The zoom drive actuator according to claim 1, further comprising: first and second magnets respectively mounted to the first and second support portions; and ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The first coil section and the second coil section are face-to-face with the first magnet and the second magnet, respectively.

10. The zoom drive actuator according to claim 1, characterized in that, The zoom drive actuator further includes a housing that accommodates the first carrier and the second carrier, and includes a first guide rail, a second guide rail, a third guide rail and a fourth guide rail.

11. The zoom drive actuator according to claim 10, characterized in that, The first support portion includes a first ball track facing the first guide rail. The first guide includes a second ball track facing the second guide rail.

12. The zoom drive actuator according to claim 10, characterized in that, The second support includes a third ball track facing the third guide rail. The second guide includes a fourth ball track facing the fourth guide rail.

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