Zoom drive actuator

Abstract

The present invention discloses a zoom driving actuator, comprising: a first carrier, including a first mounting machine loaded with a first lens assembly, a first support portion on which a first magnet is mounted, and a first guide member disposed on the opposite side of the first support portion with reference to the first mounting machine, capable of moving along the optical axis direction; a second carrier, including a second mounting machine loaded with a second lens assembly, a second support portion on which a second magnet is mounted, and a second guide member disposed on the opposite side of the second support portion with reference to the second mounting machine, capable of moving along the optical axis direction above or below the first carrier; a housing, accommodating the first and second carriers; a first coil portion, disposed face to face with the first magnet; and a second coil portion, disposed face to face with the second magnet, wherein the first carrier includes a first space for forming a path by moving the second guide member, and the second carrier includes a second space for forming a path by moving the first guide member.

Description

Technical Field

[0001] The present invention relates to a zoom driving actuator, and more specifically, the zoom driving actuator can more stably improve the driving performance according to the moving distance of lens expansion. Background Art

[0002] With the development of hardware technology for image processing and the improvement of user requirements such as image photography, functions such as autofocus (AF) and optical image stabilization (OIS) have been realized in camera modules installed in mobile terminals such as standalone camera devices, mobile phones, and smartphones.

[0003] In addition, recently, there has emerged a zoom lens actuator that can variously change the size of a shooting object by adjusting the focal length such as zooming in and zooming out, and there has also emerged an actuator that further diversely realizes the zoom function by combinatorially applying the mutual positional relationship of multiple lenses according to the implementation form.

[0004] For such a zoom lens actuator, the moving distance of the zoom lens moving along the optical axis direction is longer or more extended than that of a general lens. Therefore, it should be designed to ensure a driving force of such a longer or more extended size.

[0005] However, in order to ensure the individual independent moving spaces of multiple carriers respectively, the existing actuator is designed such that the physical structure of the driving carrier is in a simple multiple form.

[0006] Therefore, the size of the existing actuator itself is increasing, and thus it is difficult to be applied to application devices such as smartphones where size or volume is an important issue. Summary of the Invention

[0007] Technical Problem to be Solved

[0008] The present invention is invented to solve the problems in the above background, and its purpose is to provide a zoom driving actuator that can more stably maintain the driving of each carrier and more effectively realize the space utilization rate of the actuator.

[0009] Another object and advantage of the present invention can be understood through the following description, and can be more clearly known according to the embodiments of the present invention. In addition, the object and advantage of the present invention can be achieved by the structure and the combination of its structures appearing in the claims.

[0010] Means for Solving the Problem

[0011] The zoom driving actuator of the present invention for achieving the above object includes: a first carrier including a first mounting machine for mounting a first lens assembly, a first support portion on which a first magnet is mounted, and a first guide member disposed on the opposite side of the first support portion with respect to the first mounting machine, capable of moving along the optical axis direction; a second carrier including a second mounting machine for mounting a second lens assembly, a second support portion on which a second magnet is mounted, and a second guide member disposed on the opposite side of the second support portion with respect to the second mounting machine, capable of moving along the optical axis direction above or below the first carrier; a housing for accommodating the first and second carriers; a first coil portion disposed facing the first magnet; and a second coil portion disposed facing the second magnet, wherein the first carrier includes a first space for forming a passage by moving the second guide member, and the second carrier includes a second space for forming a passage by moving the first guide member.

[0012] Among them, the first support portion of the present invention has a shape that is more extended than the first mounting machine with respect to the optical axis direction, and includes a first track formed on the housing and disposed facing a first guide rail. The first guide member includes a second track formed on the housing and disposed facing a second guide rail. At this time, the present invention further includes balls respectively disposed between the first track and the first guide rail, and between the second track and the second guide rail.

[0013] In addition, the second support portion of the present invention has a shape that is more extended than the second mounting machine with respect to the optical axis direction, that is, has a shape extended along a direction opposite to the extension direction of the first support portion, and includes a third track formed on the housing and disposed facing a third guide rail. The second guide member includes a fourth track formed on the housing and disposed facing a fourth guide rail. At this time, the present invention further includes balls respectively disposed between the third track and the third guide rail, and between the fourth track and the fourth guide rail.

[0014] Preferably, the first space of the present invention is formed between the first mounting machine and the first support portion, and the second space of the present invention is formed between the second mounting machine and the second support portion.

[0015] Furthermore, the present invention further includes: a yoke disposed on the housing and generating an attractive force with the first magnet; and a first balance magnet disposed on the first guide member and generating an attractive force with the yoke.

[0016] According to an embodiment, the present invention further includes: a yoke disposed on the housing and generating an attractive force with the second magnet; and a second balance magnet disposed on the second guide member and generating an attractive force with the yoke.

[0017] Advantages of the Invention

[0018] According to an embodiment of the present invention, by symmetrically arranging the physical structures of multiple carriers in opposite directions, the independent movement ranges of the respective lenses mounted on each carrier are fully ensured.

[0019] According to an embodiment of the present invention, a part of each carrier improves the physical structure in a crossed or overlapping form, so that not only can the independent movement of multiple carriers be effectively ensured, but also the overall structure and shape of the device can be realized in a more space-saving form, thereby enabling the minimization of the overall space and being more suitable for the miniaturization of the mobile terminal passing through it, etc.

[0020] According to an embodiment of the present invention, based on the space for mounting the lens, each carrier is asymmetrically formed to provide a magnet mounting space, so that a sufficiently large magnet is provided on each carrier to more effectively enhance the driving force of each carrier. Brief Description of the Drawings

[0021] The following drawings attached to this specification are for the preferred embodiments of the present invention and are used to more effectively understand the technical idea of the present invention together with the following description of the invention, but the present invention cannot be construed as being limited by the content shown in these drawings.

[0022] Figure 1 It is a schematic diagram showing the overall structures of a zoom driving actuator and a camera module according to a preferred embodiment of the present invention.

[0023] Figure 2 It is a schematic diagram showing the overall structure of a zoom driving actuator according to a preferred embodiment of the present invention.

[0024] Figure 3 It is a schematic diagram showing the detailed structure of a first carrier, etc. according to a preferred embodiment of the present invention.

[0025] Figure 4 It is a schematic diagram showing the detailed structure of a second carrier, etc. according to a preferred embodiment of the present invention.

[0026] Figure 5 and Figure 6 It is a schematic diagram showing the mutual relationship between the first and second carriers.

[0027] Figure 7 It is a cross-sectional view explaining the detailed structure of the present invention.

[0028] Figure 8 It is a schematic diagram showing the structure of a track and a guide rail according to an embodiment of the present invention. Detailed Description of the Invention

[0029] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Before that, the terms or words used in this specification and the claims should not be construed as having the meanings defined in common usage or in a dictionary. In order to describe their inventions in the best way, the inventors should interpret them in accordance with the principle of appropriately defining the concept of the terms, and they should be interpreted as meanings and concepts consistent with the technical idea of the present invention.

[0030] In addition, the embodiments described in this specification and the structures shown in the drawings are only the most preferred embodiments of the present invention, and do not represent the entire technical idea of the present invention. It can be understood that for this application, there can be various equivalents and modification examples that can replace them.

[0031] Figure 1 It is a schematic diagram showing the overall structures of a zoom driving actuator (hereinafter simply referred to as "actuator") 100 and a camera module 1000 according to a preferred embodiment of the present invention.

[0032] The actuator 100 of the present invention is of course an independent device by itself. As Figure 1 shown, together with a reflectometer module 200, etc., it can also form a camera module 1000.

[0033] As described below, the actuator 100 of the present invention refers to an actuator that linearly moves a plurality of carriers loaded with lenses (lens assemblies) along the optical axis direction to achieve autofocus (AF) or zoom.

[0034] The reflectometer module 200 provided in front of or above the actuator 100 (based on the optical axis direction) performs the function of reflecting or refracting the light path Z1 of the object to be photographed into the path Z in the lens direction. The light reflected or refracted along the optical axis direction enters an image sensor such as a CMOS or a CCD through the lens (lens assembly) provided on the carrier.

[0035] The reflectometer module 200 that changes the light path includes a reflectometer 210 composed of one selected from a mirror or a prism or a combination thereof. The reflectometer 210 is composed of various materials that change the externally incident light into the direction along the optical axis. However, preferably, it is made of glass material for improving optical performance.

[0036] The camera module 1000 of the present invention, which is included together with the reflectometer module 200, etc., is configured to refract the light path so that the light enters along the lens direction, so that the device itself is not arranged along the thickness direction of the portable terminal but along the length direction, without increasing the thickness of the portable terminal, which is most suitable for miniaturization or thinning of the portable terminal.

[0037] According to an embodiment, the reflectometer 210 is configured to be rotationally movable by a driving component that generates a magnetic force, such as a magnet or a coil. Thus, when the reflectometer 210 moves or is rotationally moved, the light of the photographed object that is reflected (refracted) by the reflectometer 210 moves along the ±Y direction and / or the ±X direction and enters the lens and the imaging element, so as to achieve correction in the X-axis and / or Y-axis directions due to hand shake.

[0038] The light of the photographed object reflected by the reflectometer module 200 enters the first lens assembly 60 and the second lens assembly 70 provided inside the actuator 100. During this process, the respective positions (based on the optical axis direction) of the first lens assembly 60 and the second lens assembly 70 are combinatorially adjusted to achieve functions such as zooming or AF.

[0039] According to an embodiment, in order to improve optical performance such as the zoom ratio of the actuator 100, as Figure 1 shown, a fixed lens assembly 50 is provided in front of the actuator 100 (based on the optical axis direction).

[0040] According to the following description of the present invention, the direction axis corresponding to the path where light enters from the first lens 60 etc. is defined as the optical axis (Z-axis), and the two axes on the plane perpendicular to this optical axis (Z-axis) are defined as the X-axis and the Y-axis.

[0041] 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 etc. However, in the figure, in order to more clearly show the internal structure, the fixed lens assembly 50, the first lens assembly 60, and the second lens assembly 70 without loaded lenses etc. are shown.

[0042] Figure 2 is a schematic diagram showing the overall structure of the actuator 100 according to a preferred embodiment of the present invention.

[0043] The actuator 100 of the present invention corresponds to the basic framework of the actuator 100 and includes: a housing 110 that houses the internal structure, a box 190, a first carrier 120, and a second carrier 130 that are combined with the housing 110 and function as a shield.

[0044] The first carrier 120 loaded with the first lens assembly 60 and the second carrier 130 loaded with the second lens assembly 70 are equivalent to moving bodies that linearly move along the optical axis direction (Z-axis direction). From the corresponding relative perspective, the housing 110 is equivalent to a fixed body.

[0045] Figure 2In the illustrated embodiments, the second lens assembly 70 is loaded on the second carrier 130. The second lens assembly 70 is loaded on the second carrier 130 so as to be located higher or lower than 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.

[0046] As described below, a first magnet M1 is provided on the first carrier 120, and a first coil portion C1 that is disposed facing the first magnet M1 to provide a driving force to the first magnet M1 is provided on the housing 110 side.

[0047] When a power supply of an appropriate magnitude and direction is applied to the first coil portion C1 under the control of a first driving program (not shown), an electromagnetic force is generated between the first coil portion C1 and the first magnet M1, and the first carrier 120 moves forward and backward along the optical axis direction by the generated electromagnetic force. The first coil portion C1 and the like are disposed on the open face of the housing 110 in a state of being mounted on the first circuit board 170-1.

[0048] From a similar perspective, when a power supply of an appropriate magnitude and direction is applied to the second coil portion C2 under the control of a second driving program (not shown), an electromagnetic force is generated between the second magnet M2 provided on the second carrier 130 and the second coil portion C2, and the second carrier 130 linearly moves along the optical axis direction. The second coil portion C2 and the like are disposed on the open face of the housing 110 in a state of being mounted on the second circuit board 170-2.

[0049] The figure shows the first carrier 120 loaded with the first lens assembly 60 and the second carrier 130 loaded with the second lens assembly 70. Of course, as an embodiment, more lens assemblies and carriers may be provided according to the implementation form.

[0050] In the following description, for the sake of illustration efficiency, the carriers provided in the actuator 100 are exemplified as two. With Figure 2 respect to the optical axis, the carrier located in the upper part (front) is called the first carrier 120, and the carrier located in the lower part (rear) is called the second carrier 130.

[0051] The first carrier 120 and the second carrier 130 linearly move along the optical axis direction respectively, and the lenses (lens assemblies) loaded on each carrier also linearly move along the optical axis direction. The AF or zoom function is achieved through the relative positional relationship of these lenses.

[0052] As described above, in order to meet the optical performance or standards of the actuator 100, etc., a fixed lens assembly 50 may be provided in front of the first lens assembly 60 according to the implementation form.

[0053] In addition, in order to enable the first carrier 120 and the second carrier 130 to linearly move more smoothly with minimized frictional force, ball bearings B1 to B4 are disposed between the first carrier 120 and the housing 110 and between the second carrier 130 and the housing 110 (refer to Figure 7 ).

[0054] A yoke 180 made of a metal material is provided on the lower surface (YZ plane) of the housing 110, which generates an attractive force with the first magnet M1 and the second magnet M2, thereby guiding the first carrier 120 and the second carrier 130 to fit toward the housing 110 with the ball bearings B1 to B4 placed therebetween.

[0055] Figures 3 to 6 FIG. is a schematic diagram showing the detailed structures and mutual relationships of the first carrier 120, the second carrier 130, the housing 110, etc. according to a preferred embodiment of the present invention.

[0056] 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. Specifically, it includes: a first mounting machine 121 loaded with the first lens 60, a first support portion 123 loaded with the first magnet M1, and a first guide member 125.

[0057] As shown in the figure, the first mounting machine 121 has a space corresponding to the shape of the first lens assembly 60 to load the first lens 60 (first lens assembly). According to an embodiment, in order to prevent the first lens assembly 60 from detaching along the X-axis direction or the like, a box or a stopper (not shown) may be provided on the upper portion of the first mounting machine 121.

[0058] The first support portion 123 loaded with the first magnet M1 is disposed on one side of the left or right side of the first mounting machine 121. As shown in the figure, it has a shape (D1, refer to Figure 5 ) that is more extended than the optical axis direction length (D2, refer to Figure 5 ) of the first mounting machine 121 with respect to the optical axis direction.

[0059] The first support portion 123 and the first mounting machine 121 are integrally formed. In order to achieve a physical structure symmetrical to the second support portion 133 of the second carrier 130 described later, preferably, it has a shape extending in one direction in the optical axis direction (Z-axis direction).

[0060] Thus, since the first support portion 123 of the present invention has a shape extending in the optical axis direction, it can load the first magnet M1 corresponding to the size of its expanded area, thereby further improving the driving force of the first carrier 120.

[0061] In addition, the first support portion 123 is formed with a first track 128 that is disposed facing the first guide rail 111 formed on the housing 110. At this time, the first ball B1 is disposed between the first guide rail 111 and the first track 128 in a form in which a part thereof is accommodated.

[0062] The first guide member 125 is disposed on the left or right side of the first mounter 121 on the side opposite to the side where the first support portion 123 is not provided. As shown in the figure, it has a lower height (with respect to the X-axis) than the first support portion 123 and is formed in a bar shape that is more extended in the optical axis direction length of the first mounter 121.

[0063] The first guide member 125 is formed with a second track 129 that is disposed facing the second guide rail 112 formed on the housing 110. The second ball B2 of the present invention is disposed between the second guide rail 112 and the second track 129 in a form in which a part thereof is accommodated.

[0064] In this way, the first carrier 120 can be more stably supported to move along the optical axis direction of the first lens assembly 60 by the first support portion 123 and the first guide member 125. The first support portion 123 and the first guide member 125 are respectively located on the left and right sides with respect to the first mounter 121 and have a shape that is more extended than the first mounter 121.

[0065] The first guide member 125 of the first carrier 120 is provided with a first balance magnet BM1 that generates an attractive force with the yoke 180. 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 yoke 180 provided on the housing 110.

[0066] Therefore, the first carrier 120 of the present invention adheres toward the housing 110 while maintaining balance as a whole through the attractive forces between the first magnet M1 and the yoke 180 and between the first balance magnet BM1 and the yoke 180, thereby more stably achieving the physical guidance by the balls B1 and B2.

[0067] Preferably, in order to increase the driving force, the first coil portion C1 provided on the housing 110 side is formed with n (n is a natural number of 2 or more) coils arranged vertically with respect to the optical axis direction.

[0068] The second carrier 130 has a physical structure corresponding to that of the first carrier 120. As shown in the figure, it is configured to be symmetric with the first carrier 120 in the opposite direction.

[0069] Specifically, the second carrier 130 includes: a second mounter 131 on which the second lens assembly 70 is mounted, a second support portion 133 on which the second magnet M2 is mounted, and a second guide member 135.

[0070] The second support portion 133 of the second carrier 130 is provided on one side of the left or right side of the second mounter 131, and is provided in a direction opposite to the direction of the first support portion facing the first carrier 120, and has a length (D3, reference Figure 5 ) that is more extended than the length (D4, reference Figure 5 ) of the second mounter 131 in the optical axis direction, and has a shape that extends in a direction opposite to the direction in which the first support portion 123 of the first carrier 120 extends.

[0071] Accordingly, the first carrier 120 and the second carrier 130 have an overall similar physical structure, and a first mounter 121 loaded with the first lens assembly 60 and a second mounter 131 loaded with the second lens assembly 70 are provided in the central portion, thereby ensuring sufficient moving distances for the first and second lens assemblies 60 and 70.

[0072] At the same time, the first magnet M1 for driving the first carrier 120 and the second magnet M2 for driving the second carrier 130 are provided in relatively larger sizes through the first support portion 123 and the second support portion 133, thereby contributing to effectively enhancing the driving force.

[0073] Furthermore, the first magnet M1 and the second magnet M2 are respectively separated from each other to the left and right (with respect to the Y axis), and correspondingly, the first coil portion C1 disposed face to face with the first magnet M1 and the second coil portion C2 disposed face to face with the second magnet M2 are also separated.

[0074] In this way, the first magnet M1 and the first coil portion C1, and the second magnet M2 and the second coil portion C2 are separated from each other at a long distance, thereby minimizing the mutual interference and influence of the electromagnetic forces for driving each carrier, and more precisely realizing the independent driving of the first carrier 120 and the second carrier 130.

[0075] A third track 138 is formed on the second support portion 133 so as to face the third guide rail 113 formed on the housing 110. At this time, the third ball B3 is configured in a form in which a part of it is accommodated between the third guide rail 113 and the third track 138.

[0076] The second guide member 135 is provided on the opposite side of the left or right side of the second mounter 131 that does not have the second support portion 133. As shown in the figure, it has a lower height (with respect to the X axis) than the second support portion 133, and is formed in a bar shape that is more extended in the optical axis direction of the second mounter 131.

[0077] The second guide member 135 is formed with a fourth track 139 that is disposed face to face with the fourth guide rail 114 formed on the housing 110. The fourth ball B4 of the present invention is configured in a form in which a part of it is accommodated between the fourth guide rail 114 and the fourth track 139.

[0078] In this way, the second carrier 130 can more stably support the movement along the optical axis direction of the second lens assembly 70 through the second support portion 133 and the second guide member 135. The second support portion 133 and the second guide member 135 are respectively located on the left and right sides with respect to the second mounter 131 and have a shape that is more extended than the second mounter 131.

[0079] The second guide member 135 of the second carrier 130 is provided with a second balance magnet BM2 that generates an attractive force with the yoke 180. The second magnet M2 provided on the second support portion 133 of the second carrier 130 generates an attractive force with the yoke 180 provided on the housing 110.

[0080] Therefore, the second carrier 130 of the present invention is attached toward the housing 110 while maintaining balance as a whole through the attractive forces between the second magnet M2 and the yoke 180 and between the second balance magnet BM2 and the yoke 180, so as to more stably achieve the physical guidance by the balls B3 and B4.

[0081] As Figures 3 to 6 shown, the first carrier 120 includes a first space 127 having a passage extending in the optical axis direction for the second guide member 135 of the second carrier 130 to move.

[0082] Correspondingly, the second carrier 130 includes a second space 137 having a passage extending in the optical axis direction for the first guide member 125 of the first carrier 120 to move.

[0083] Through the physical structures of the first space 127 of the first carrier 120 and the second space 137 of the second carrier 130, the first guide member 125 of the first carrier 120 is introduced into the second space 137 of the second carrier 130, and the second guide member 135 of the second carrier 130 is introduced into the first space 127 of the first carrier 120.

[0084] Thus, the first carrier 120 and the second carrier 130 of the present invention can naturally move independently of each other, and a part of the structure of each can achieve a physical structure in an intersecting or overlapping form, thereby further improving the space utilization.

[0085] Figure 7 It is a cross-sectional view showing the detailed structure of the present invention. Figure 8It is a schematic diagram showing the structures of the tracks 128, 129, 138, 139 and the guide rails 111, 112, 113, 114 according to an embodiment of the present invention.

[0086] As Figure 7 shown, the second guide member 135 of the second carrier 130 is located in the first space 127 of the first carrier 120. When the second carrier 130 moves, it is physically guided by the fourth ball B4 and linearly moves along the optical axis direction.

[0087] From the corresponding perspective, the first guide member 125 of the first carrier 120 is located in the second space 137 of the second carrier 130. When the first carrier 120 moves, it is physically guided by the second ball B2 through the second space 137 and linearly moves along the optical axis direction.

[0088] In this way, a physical structure in which a part of each of the first carrier 120 and the second carrier 130 of the present invention can be stacked or overlapped with each other can be realized, so as to ensure independent driving for each while reducing the overall size, thereby further improving the space utilization.

[0089] In order to further improve the efficiency of this spatial design, preferably, the first space 127 is formed between the first mounter 121 and the first support portion 123, and the second space 137 is formed between the second mounter 131 and the second support portion 133.

[0090] As Figure 8 shown, the first to fourth guide rails 111, 112, 113, 114 are formed on the bottom surface (based on the X-axis) of the housing 110.

[0091] The first guide rail 111 and the second guide rail 112 are configured to guide the balls B1, B2 located between the first carrier 120 and the housing 110. The first guide rail 111 faces the first track 128, and the second guide rail 112 faces the second track 129.

[0092] The third guide rail 113 faces the third track 138 formed on the second support portion 133 of the second carrier 130, and the fourth guide rail 114 faces the fourth track 139 formed on the second guide member 135 of the second carrier 130.

[0093] The third ball B3 and the fourth ball B4 are respectively arranged between the third guide rail 113 and the third track 138 and between the fourth guide rail 114 and the fourth track 139.

[0094] As described above, the first carrier 120 and the second carrier 130 of the present invention are respectively the parts loaded with lenses and the parts loaded with driving magnets, which are dualized. The part loaded with magnets has a shape extending in the optical axis direction. The first carrier 120 and the second carrier 130 themselves are configured as symmetric physical structures based on opposite directions.

[0095] Thus, as described above, the structure of the guide rail can be further expanded in the optical axis direction. Based on this, the moving distances of the first carrier 120 and the second carrier 130 in the optical axis direction can be more effectively expanded without interference or physical obstruction due to movement.

[0096] In order to effectively guide linearity, in one or more of the tracks 128, 129, 138, 139 and / or the guide rails 111, 112, 113, 114, the balls B1, B2, B3, B4 are arranged in a form that accommodates a part of them.

[0097] Although the present invention has been described above with limited embodiments and drawings, the present invention is not limited by the above description. Of course, those skilled in the art in the technical field to which the present invention belongs can make various modifications and deformations within the equivalent scope of the technical idea of the present invention and the claims described below.

[0098] In the description of the present invention, modifiers such as first and second are merely instrumental concept terms used to relatively distinguish the constituent elements from each other, and cannot be construed as terms used to indicate a specific order, priority order, etc.

[0099] In order to emphasize or depict the technical content of the present invention, the attached drawings for illustrating the present invention and the embodiments thereof can be shown in an exaggerated form. It should be understood that considering the above-described content and the content shown in the drawings, those skilled in the art in this technical field can clearly obtain various forms of modified embodiments.

[0100] Description of Reference Numerals

[0101] 1000: Camera module

[0102] 50: Fixed lens assembly 60: First lens assembly

[0103] 70: Second lens assembly 200: Reflectometer module

[0104] 100: Actuator

[0105] 110: Housing 111, 112, 113, 114: Guide rails

[0106] C1: First coil part C1: Second coil part

[0107] 120: First carrier 121: First mounter

[0108] 123: First support part 125: First guide

[0109] 128: First track 129: Second track

[0110] M1: First magnet BM1: First balancing magnet

[0111] 130: Second carrier 131: Second mounter

[0112] 133: Second support part 135: Second guide

[0113] 138: Third track 139: Fourth track

[0114] M2: Second magnet BM2: Second balancing magnet

[0115] B1 (B2, B3, B4): Ball 170-1 (170-2): Circuit board

[0116] 180: Yoke 190: Cartridge.

Claims

1. A zoom drive actuator, characterized in that, Comprising: A first carrier, including a first pick-and-place machine loaded with a first lens assembly, a first support portion on which a first magnet is installed, and a first guide member disposed on the opposite side of the first support portion with respect to the first pick-and-place machine, capable of moving along the optical axis direction; A second carrier, including a second pick-and-place machine loaded with a second lens assembly, a second support portion on which a second magnet is installed, and a second guide member disposed on the opposite side of the second support portion with respect to the second pick-and-place machine, capable of moving along the optical axis direction above or below the first carrier; A housing that houses the first carrier and the second carrier; A first coil portion disposed on the housing side facing the first magnet; and a second coil portion disposed on the housing side facing the second magnet, wherein the first carrier includes a first space that forms a passage for moving the second guide member, and the second carrier includes a second space that forms a passage for moving the first guide member.

2. The zoom drive actuator according to claim 1, wherein the first support portion has a shape longer than the first pick-and-place machine with respect to the optical axis direction, and includes a first track formed on the housing and disposed facing a first guide rail, the first guide member includes a second track formed on the housing and disposed facing a second guide rail, and further includes balls respectively disposed between the first track and the first guide rail, and between the second track and the second guide rail.

3. The zoom drive actuator according to claim 2, wherein the second support portion has a shape longer than the second pick-and-place machine with respect to the optical axis direction, that is, has a shape extending in a direction opposite to the extension direction of the first support portion, and includes a third track formed on the housing and disposed facing a third guide rail, the second guide member includes a fourth track formed on the housing and disposed facing a fourth guide rail, and further includes balls respectively disposed between the third track and the third guide rail, and between the fourth track and the fourth guide rail.

4. The zoom drive actuator according to claim 1, wherein the first space is formed between the first pick-and-place machine and the first support portion.

5. The zoom drive actuator according to claim 1, wherein the second space is formed between the second pick-and-place machine and the second support portion.

6. The zoom drive actuator according to claim 1, wherein Further comprising: A yoke disposed on the housing, generating an attractive force with the first magnet; and A first balance magnet disposed on the first guide member, generating an attractive force with the yoke.

7. The zoom drive actuator according to claim 1, wherein Further comprising: A yoke disposed on the housing, generating an attractive force with the second magnet; and A second balance magnet disposed on the second guide member, generating an attractive force with the yoke.

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