Patent Publication Number: US-11665416-B2

Title: Camera module

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application claims the benefit under 35 U.S.C. § 119(a) of Korean Patent Application No. 10-2020-0031170 filed on Mar. 13, 2020 in the Korean Intellectual Property Office, the entire disclosure of which is incorporated herein by reference for all purposes. 
     BACKGROUND 
     1. Field 
     The following description relates to a camera module. For example, the following description relates to a camera module configured to minimize magnetic field interference between internal components of the camera module. 
     2. Description of Related Art 
     A camera module may include a lens module and a driving assembly configured to drive the lens module. For example, the camera module may include a lens module including a plurality of lenses, and one or more driving assemblies configured to drive the lens module in a direction of an optical axis and in a direction intersecting the optical axis. The one or more driving assemblies may include a plurality of magnets and a plurality of coils configured to generate different levels of driving force. For example, a magnet and a coil of a first driving assembly may be configured to move the lens module in the direction of the optical axis, and a magnet and a coil of a second driving assembly may be configured to move the lens module in the direction intersecting the optical axis. However, since a relatively small camera module may have a relatively narrow space in which the first driving assembly and the second driving assembly are disposed, interference between the magnet and the coil of the first driving assembly and the magnet and the coil of the second driving assembly may occur. 
     SUMMARY 
     This Summary is provided to introduce a selection of concepts in simplified form that are further described below in the Detailed Description. This Summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter. 
     In one general aspect, a camera module includes a driving assembly configured to drive a lens module in a direction intersecting an optical axis. The driving assembly includes: a driving magnet member; auxiliary magnet members arranged on opposing sides of the driving magnet member and arranged to have polarities different from a polarity of the driving magnet member in a first direction; and a driving coil including portions extending along boundaries between the driving magnet member and the auxiliary magnet members. 
     First and second polarities of the driving magnet member may be formed in the direction intersecting the first direction. 
     A length of each of the auxiliary magnet members in the first direction may be less than a length of the driving magnet member in the first direction. 
     A length of the driving coil in the first direction may be less than a total sum of a length of the driving magnet member and a length of each of the auxiliary magnet members arranged in the first direction. 
     A height of the driving coil may be greater than a height of the driving member. 
     The driving magnet member may include a first driving magnet member and a second driving magnet member, arranged in the first direction. 
     A length of the first driving magnet member in the first direction and a length of the second driving magnet member in the first direction may be respectively greater than a length of each of the auxiliary magnet members in the first direction. 
     The driving coil may include: a first driving coil formed along an edge of the first driving magnet member; and a second driving coil disposed adjacent to the first driving coil and formed along an edge of the second driving magnet member. 
     In another general aspect, a camera module includes a driving assembly configured to drive a lens module in a direction intersecting an optical axis. The driving assembly includes: a first driving magnet member; a second driving magnet member disposed side-by-side with the first driving magnet member; a first driving coil disposed to oppose the first driving magnet member, the first driving coil being formed along a boundary between the first driving magnet member and the second driving magnet member, and along an edge of the first driving magnet member; and a second driving coil disposed to oppose the second driving magnet member, the second driving coil being formed along the boundary between the first driving magnet member and the second driving magnet member, and along an edge of the second driving magnet member. 
     The first driving coil and the second driving coil may be arranged at an interval, based on the boundary between the first driving magnet and the second driving magnet. 
     A length of the first driving coil in a first direction may be greater than a length of the first driving magnet member in the first direction. 
     The first driving magnet member and the second driving magnet member may have different polarities in the first direction. 
     The first driving coil and the second driving coil may be configured to allow a current to flow in a same direction at the boundary between the first driving magnet member and the second driving magnet member. 
     In another general aspect, a camera module includes a driving assembly configured to drive a lens module in a direction intersecting an optical axis. The driving assembly includes: a driving magnet in which a first polarity boundary line and a second polarity boundary line are formed at an interval in the direction intersecting the optical axis; and a driving coil including portions extending along the first polarity boundary line and the second polarity boundary line. 
     A length of the driving magnet may be greater than a length of the driving coil. 
     A distance between the first polarity boundary line and the second polarity boundary line may be greater than a distance between the first polarity boundary line and an end portion of the driving magnet. 
     A height of the driving coil may be greater than a height of the driving magnet. 
     Other features and aspects will be apparent from the following detailed description, the drawings, and the claims. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG.  1    is a plan view illustrating a schematic configuration of a camera module, according to an embodiment. 
         FIG.  2    is a front view of a driving assembly illustrated in  FIG.  1   . 
         FIG.  3    is a front view of a driving assembly, according to an embodiment. 
         FIG.  4    is an exploded perspective view of a camera module, according to an embodiment. 
         FIG.  5    is a partially assembled perspective view of the camera module illustrated in  FIG.  4   . 
         FIGS.  6  and  7    are cross-sectional views of a moving body illustrated in  FIG.  5   . 
         FIG.  8    is an assembled perspective view of the camera module illustrated in  FIGS.  4  and  5   . 
         FIG.  9    is a cross-sectional view along line III-Ill of  FIG.  8   . 
         FIGS.  10 A to  10 C  are configuration diagrams of driving assemblies illustrated in  FIG.  9   , according to an embodiment. 
         FIGS.  11 A to  11 C  are configuration diagrams of driving assemblies, according to an embodiment. 
         FIG.  12    illustrates a mobile terminal equipped with a camera module, according to an embodiment. 
         FIG.  13    is an exploded perspective view of a camera module, according to an embodiment. 
         FIGS.  14 A to  14 C  are configuration diagrams of driving assemblies illustrated in  FIG.  13   , according to an embodiment. 
     
    
    
     Throughout the drawings and the detailed description, the same reference numerals refer to the same elements. The drawings may not be to scale, and the relative size, proportions, and depiction of elements in the drawings may be exaggerated for clarity, illustration, and convenience. 
     DETAILED DESCRIPTION 
     The following detailed description is provided to assist the reader in gaining a comprehensive understanding of the methods, apparatuses, and/or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatuses, and/or systems described herein will be apparent after an understanding of the disclosure of this application. For example, the sequences of operations described herein are merely examples, and are not limited to those set forth herein, but may be changed as will be apparent after an understanding of the disclosure of this application, with the exception of operations necessarily occurring in a certain order. Also, descriptions of features that are known in the art may be omitted for increased clarity and conciseness. 
     The features described herein may be embodied in different forms, and are not to be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many possible ways of implementing the methods, apparatuses, and/or systems described herein that will be apparent after an understanding of the disclosure of this application. 
     Herein, it is noted that use of the term “may” with respect to an embodiment or example, e.g., as to what an embodiment or example may include or implement, means that at least one embodiment or example exists in which such a feature is included or implemented while all examples and examples are not limited thereto. 
     Throughout the specification, when an element, such as a layer, region, or substrate, is described as being “on,” “connected to,” or “coupled to” another element, it may be directly “on,” “connected to,” or “coupled to” the other element, or there may be one or more other elements intervening therebetween. In contrast, when an element is described as being “directly on,” “directly connected to,” or “directly coupled to” another element, there can be no other elements intervening therebetween. 
     As used herein, the term “and/or” includes any one and any combination of any two or more of the associated listed items. 
     Although terms such as “first,” “second,” and “third” may be used herein to describe various members, components, regions, layers, or sections, these members, components, regions, layers, or sections are not to be limited by these terms. Rather, these terms are only used to distinguish one member, component, region, layer, or section from another member, component, region, layer, or section. Thus, a first member, component, region, layer, or section referred to in examples described herein may also be referred to as a second member, component, region, layer, or section without departing from the teachings of the examples. 
     Spatially relative terms such as “above,” “upper,” “below,” and “lower” may be used herein for ease of description to describe one element&#39;s relationship to another element as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, an element described as being “above” or “upper” relative to another element will then be “below” or “lower” relative to the other element. Thus, the term “above” encompasses both the above and below orientations depending on the spatial orientation of the device. The device may also be oriented in other ways (for example, rotated 90 degrees or at other orientations), and the spatially relative terms used herein are to be interpreted accordingly. 
     The terminology used herein is for describing various examples only, and is not to be used to limit the disclosure. The articles “a,” “an,” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms “comprises,” “includes,” and “has” specify the presence of stated features, numbers, operations, members, elements, and/or combinations thereof, but do not preclude the presence or addition of one or more other features, numbers, operations, members, elements, and/or combinations thereof. 
     Due to manufacturing techniques and/or tolerances, variations of the shapes illustrated in the drawings may occur. Thus, the examples described herein are not limited to the specific shapes illustrated in the drawings, but include changes in shape that occur during manufacturing. 
     The features of the examples described herein may be combined in various ways as will be apparent after gaining an understanding of the disclosure of this application. Further, although the examples described herein have a variety of configurations, other configurations are possible as will be apparent after an understanding of the disclosure of this application. 
       FIGS.  1  and  2    illustrate a camera module  10 , according to an embodiment. 
     The camera module  10  may be mounted in a portable electronic product. For example, the camera module  10  may be mounted on a mobile phone, a laptop computer, or the like. However, applications of the camera module  10  are not limited to the above-mentioned electronic products. For example, the camera module  10  may be mounted in an automated teller machine (ATM), a television for interactive broadcasting, or the like. 
     Referring to  FIG.  1   , the camera module  10  may include a structure for accommodating various component elements necessary for a function of the camera module  10 . For example, the camera module  10  may include a housing  100 . 
     The camera module  10  may include one or more components for imaging light reflected from a subject on an image sensor. For example, the camera module  10  may include a lens module  200 . The lens module  200  may include a lens having refractive power. For example, the lens module  200  may include four (4) or more lenses. The number of lenses included in the lens module  200  is not limited to four (4). For example, the lens module  200  may include three (3) or less lenses, or may include five (5) or more lenses. 
     The camera module  10  may be configured to have an optical image stabilization (OIS) function. For example, the camera module  10  may include driving assemblies  400  and  500  for driving the lens module  200  in respective directions intersecting an optical axis C. 
     The driving assemblies  400  and  500  may include driving coils  410  and  510 , respectively, and driving magnets  420  and  520 , respectively. The driving coils  410  and  510  may be respectively disposed in the housing  100 . For example, the driving coil  410  and the driving coil  510  may be arranged on different side surfaces of the housing  100 . The driving magnets  420  and  520  may be respectively disposed on the lens module  200 . For example, the driving magnet  420  and the driving magnet  520  may be arranged on different side surfaces of the lens module  200 . The driving coils  410  and  510  and the driving magnets  420  and  520  may be arranged to oppose each other, respectively. For example, the driving coil  410  may be disposed to oppose the driving magnet  420 , and the driving coil  510  may be disposed to oppose the driving magnet  520 . The driving assembly  400  and the driving assembly  500  may be configured to provide force in different directions. For example, the driving assembly  400 , (e.g., the driving coil  410  and the driving magnet  420 ), may generate driving force to move the lens module  200  in a first direction intersecting the optical axis C, and the driving assembly  500  (e.g., the driving coil  510  and the driving magnet  520 ) may generate driving force to move the lens module  200  in a second direction intersecting the optical axis C. 
     The driving assemblies  400  and  500  may have a specific shape. Hereinafter, configurations of the driving assemblies  400  and  500  will be described with reference to  FIG.  2   . 
     Referring to  FIG.  2   , the driving magnets  420  and  520  may be configured to include a plurality of polarity boundary lines  4202 ,  5202 ,  4204 , and  5204 . For example, the driving magnets  420  and  520  may be configured such that two S poles are formed on opposing side surfaces of an N pole or two N poles are formed on opposing side surfaces of an S pole. The plurality of polarity boundary lines  4202 ,  5202 ,  4204 , and  5204  may be formed at intervals in a direction intersecting the optical axis C. For example, N and S poles of the driving magnets  420  and  520  may be formed in a direction intersecting the optical axis C. Regions forming the N and S poles of the driving magnets  420  and  520  may be formed to have different distances. For example, a distance, or length, Lmd of a first polarity formation region (e.g., an N pole in reference to  FIG.  2   ) that may be central portions of the driving magnets  420  and  520  may be greater than a distance, or length, Lmt of each of second polarity formation regions (e.g., S poles in reference to  FIG.  2   ), neighboring the first polarity formation region. In other words, a distance from the first polarity boundary lines  4202  and  5202  to respective second polarity boundary lines  4204  and  5204  may be greater than a distance from the first polarity boundary lines  4202  and  5202  to ends of the respective driving magnets  420  and  520  closest to the first polarity boundary lines  4202  and  5202 , respectively. As another example, the length Lmd of the first polarity formation region may be equal to or greater than a total sum of the lengths Lmt+Lmt of the second polarity formation regions. 
     The driving coils  410  and  510  may be disposed to oppose the central portions of the driving magnets  420  and  520 , respectively. For example, the driving coil  410  may be disposed to oppose a first polarity formation region (e.g., an N pole based on  FIG.  2   ) formed in the central portion of the driving magnet  420 , and the driving coil  510  may be disposed to oppose a first polarity formation region (e.g., an N pole based on  FIG.  2   ) formed in the central portion of the driving magnet  520 . The driving coil  410  may include a portion extending along the polarity boundary lines  4202  and  4204  of the driving magnet  420 , and the driving coil  510  may include a portion extending along the polarity boundary lines  5202  and  5204  of the driving magnet  520 . For example, first extensions of the driving coils  410  and  510  wound to have a generally rectangular shape may be respectively formed along the first polarity boundary lines  4202  and  5202 , second extensions of the driving coils  410  and  510  may be respectively formed along an upper edge of the first polarity formation region, third extensions of the driving coils  410  and  510  may be respectively formed along the second polarity boundary lines  4204  and  5204 , and fourth extensions of the driving coils  410  and  510  may be respectively formed along a lower edge of the first polarity formation region. The driving coils  410  and  510  may have a predetermined size relationship with the driving magnets  420  and  520 , respectively. For example, a length Lc of each of the driving coils  410  and  510  may be less than a length Lm of the respective driving magnets  420  and  520 . Alternatively, a height hc of each of the driving coils  410  and  510  may be greater than a height hm of the respective driving magnets  420  and  520 . 
     Since the driving assembly  400  may have a structure in which a magnetic field generated between the driving coil  410  and the driving magnet  420  may be recovered by the driving magnet  420 , and the driving assembly  500  may have a structure in which a magnetic field generated between the driving coil  510  and the driving magnet  520  may be recovered by the driving magnet  520 , a magnetic field effect on one or more other driving assemblies adjacent to the driving assemblies  400  and  500  or a magnetic field effect on other electronic component(s) adjacent to the camera module  10  may be effectively reduced. 
       FIG.  3    illustrates driving assemblies  400 - 1  and  500 - 1 , which are modified forms of the driving assemblies  400  and  500 , according to an embodiment. 
     Referring to  FIG.  3   , the driving assemblies  400 - 1  and  500 - 1  may each have a form in which a plurality of driving coils oppose a driving magnet. For example, a driving magnet  420 - 1  may be disposed to oppose two (2) driving coils  412  and  414 , and a driving magnet  520 - 1  may be disposed to oppose two (2) driving coils  512  and  514 . 
     The driving magnets  420 - 1  and  520 - 1  may be configured to have four (4) or more polarities, respectively. For example, the driving magnets  420 - 1  and  520 - 1  may be respectively configured such that an S pole, an N pole, an S pole, and an N pole are sequentially formed in a direction intersecting an optical axis C. The driving magnet  420 - 1  may be configured such that three (3) or more polarity boundary lines (e.g.,  4202 ,  4204 , and  4206 ) are formed, and the driving magnet  520 - 1  may be configured such that three (3) or more polarity boundary lines (e.g.,  5202 ,  5204 , and  5206 ) are formed. For example, the driving magnets  420 - 1  and  520 - 1  may be configured such that respective first polarity boundary lines  4202  and  5202 , respective second polarity boundary lines  4204  and  5204 , and respective third polarity boundary lines  4206  and  5206  are formed at intervals in a direction intersecting the optical axis C. 
     The driving magnets  420 - 1  and  520 - 1  may be configured such that a length of a polarity formation region respectively formed in central portions thereof and a length of a polarity formation region respectively formed in outermost side portions thereof are different. For example, a length Lmd of a polarity formation region respectively formed in central portions of the driving magnets  420 - 1  and  520 - 1  may be greater than a length Lmt of a polarity formation region respectively formed in outermost side portions of the driving magnets  420 - 1  and  520 - 1 . As another example, the length Lmd of the polarity formation region respectively formed in the central portions of the driving magnets  420 - 1  and  520 - 1  may be equal to or greater than a total sum of the lengths Lmt+Lmt of the polarity formation regions respectively formed in the outermost side portions of the driving magnets  420 - 1  and  520 - 1 . 
     The driving coils  412  and  414  may be arranged to oppose polarities formed in a central portion of the driving magnet  420 - 1 , and the driving coils  512  and  514  may be arranged to oppose polarities formed in a central portion of the driving magnet  520 - 1 . For example, the driving coils  412  and  414  may be disposed to respectively oppose an N pole and an S pole formed in the central portion of the driving magnet  420 - 1 , and the driving coils  512  and  514  may be disposed to respectively oppose an N pole and an S pole formed in the central portion of the driving magnet  520 - 1 . The driving coils  412  and  414  may include portions extending along the polarity boundary lines  4202  and  4206  of the driving magnet  420 - 1 , and the driving coils  512  and  514  may include portions extending along the polarity boundary lines  5202  and  5206  of the driving magnet  520 - 1 . For example, a portion of the driving coil  412  may be formed to extend along the first polarity boundary line  4202 , and a portion of the driving coil  414  may be formed to extend along the third polarity boundary line  4206 . For example, a portion of the driving coil  512  may be formed to extend along the first polarity boundary line  5202 , and a portion of the driving coil  514  may be formed to extend along the third polarity boundary line  5206 . In addition, other portions of the driving coils  412  and  414  may have a predetermined separation distance from the second polarity boundary line  4204 , and may be formed to extend parallel to the second polarity boundary line  4204 . Similarly, other portions of the driving coils  512  and  514  may have a predetermined separation distance from the second polarity boundary line  5204 , and may be formed to extend parallel to the second polarity boundary line  5204 . The driving coils  412 ,  512 ,  414 , and  514  may have a predetermined size relationship with the respective driving magnets  420 - 1  and  520 - 1 . For example, a length Lc of each of the driving coils  412 ,  512 ,  414 , and  514  may be less than a length Lm of the respective driving magnets  420 - 1  and  520 - 1 . Alternatively, a height hc of each of the driving coils  412 ,  512 ,  414 , and  514  may be greater than a height hm of the respective driving magnets  420 - 1  and  520 - 1 . 
     Since the driving assembly  400 - 1  may have a structure in which the driving coils  412  and  414  and the driving magnet  420 - 1 , formed with a plurality of polarities, oppose each other, and the driving assembly  500 - 1  may have a structure in which the driving coils  512  and  514  and the driving magnet  520 - 1 , formed with a plurality of polarities, oppose each other, a location of the lens module  200  may be corrected by strong driving force. 
       FIGS.  4  and  5    illustrate a configuration of a camera module  10 - 1 , according to an embodiment. 
     The camera module  10 - 1  may be mounted in a portable electronic product, as in the above-described embodiment. For example, the camera module  10 - 1  may be mounted on a mobile phone, a laptop computer, or the like. An application of the camera module  10 - 1  is not limited to the above-mentioned electronic products. For example, the camera module  10 - 1  may be mounted in an automated teller machine (ATM), a television for interactive broadcasting, or the like. 
     The camera module  10 - 1  may include, for example, the housing  100 , a lens barrel  160 , the lens module  200 , a first driving assembly  300 , and second driving assemblies  400 - 2  and  500 - 2 , as illustrated in  FIG.  5   . A configuration of the camera module  10 - 1  is not limited to the above-mentioned members. For example, the camera module  10 - 1  may further include a substrate  120 , a yoke  140 , position detecting sensors  610 ,  620 , and  630 , a first ball bearing  640 , a second ball bearing  650 , a third ball bearing  660 , a cover member  700 , a buffer member  830 , and a shield can  900 . 
     The housing  100  may be formed as a cube having open upper and lower surfaces. For example, the housing  100  may be configured in a substantially hexahedral shape. Three (3) side surfaces of the housing  100  may be partially incised. Driving force of the first driving assembly  300  and the second driving assemblies  400 - 2  and  500 - 2  may be transmitted to the lens module  200  through the incised side surfaces. A pair of first guide grooves  102  may be formed inside a first surface of the housing  100 . The first guide groove  102  may be formed to be elongated in a height direction of the housing  100 . The first ball bearing  640  may be disposed in the first guide groove  102 . 
     The lens module  200  may be disposed inside the housing  100 . The lens module  200  may be configured to move in a direction of the optical axis C ( FIG.  1   ) and in a direction intersecting the optical axis C within the housing  100 . The lens module  200  may be include a plurality of members. For example, the lens module  200  may include a first frame  210 , a second frame  220 , and a third frame  230 . 
     The first frame  210  may be formed to be open in a vertical direction and to have two (2) closed side surfaces and two (2) open side surfaces. A pair of second guide grooves  212  may be formed on a first surface of the first frame  210 . The first ball bearing  640  may be disposed in the second guide groove  212 . The first frame  210  may be disposed inside the housing  100 . The first frame  210  may be configured to move in the direction of the optical axis C with respect to the housing  100 . For example, the first frame  210  may be in point contact with or in line contact with the first ball bearing  640  to move in the direction of the optical axis C. Driving force required for driving the first frame  210  may be provided by the first driving assembly  300 . A first groove  214  may be formed in each of four (4) internal corners of the first frame  210 . The first groove  214  may have an elongated shape. For example, the first groove  214  may be formed to be elongated in a first direction intersecting the optical axis C. The second ball bearing  650  may be disposed in the first groove  214 . 
     The second frame  220  may have a generally thin plate shape that is open in the vertical direction. The second frame  220  may be disposed on the first frame  210 , and may be configured to move in the first direction intersecting the optical axis C. For example, the second frame  220  may be enabled to move in the first direction intersecting the optical axis C by the second ball bearing  650  being disposed between the first frame  210  and the second frame  220 . Driving force required for driving the second frame  220  may be provided by the second driving assembly  400 - 2 . A second groove  224  and a third groove  226  may be formed in the second frame  220 . The second groove  224  may be formed in a lower portion of the second frame  220 , and the third groove  226  may be formed in an upper portion of the second frame  220 . The second groove  224  may be formed to be elongated in the first direction intersecting the optical axis C. The second groove  224  may form a space for accommodating the second ball bearing  650 , together with the first groove  214 . The third groove  226  may be formed to be elongated in a second direction intersecting the optical axis C and the first direction. 
     The third frame  230  may be formed to be open in the vertical direction and to have a predetermined height. The third frame  230  may be disposed on the second frame  220 , and may be configured to move in the second direction intersecting the optical axis C. For example, the third frame  230  may be enabled to move in the second direction intersecting the optical axis C by the third ball bearing  660  being disposed between the second frame  220  and the third frame  230 . Driving force required for driving the third frame  230  may be provided by the second driving assembly  400 - 2 . A fourth groove  234  may be formed in a lower portion of the third frame  230 . The fourth groove  234  may be formed to be elongated in the second direction intersecting the optical axis C. The fourth groove  234  may form a space for accommodating the third ball bearing  660 , together with the third groove  226 . 
     The lens barrel  160  may be combined with the third frame  230 . The lens barrel  160  may be moved by the lens module  200  in the direction of the optical axis C and in a direction intersecting the optical axis C. For example, the lens barrel  160  may be moved in a direction of the optical axis C by the first frame  210 . As another example, the lens barrel  160  may be moved in the first and second directions intersecting the optical axis C by the second frame  220  and the third frame  230 . Movement of the lens barrel  160  in the direction of the optical axis C may enable focus adjustment of the camera module  10 - 1 , and movement of the lens barrel  160  in a direction intersecting the optical axis C may perform an optical image stabilization (OIS) function of the camera module  10 - 1 . 
     The first driving assembly  300  may be configured to move the lens module  200  in the direction of the optical axis C. For example, the first driving assembly  300  may provide driving force required to move the first frame  210  in the direction of the optical axis C. The first driving assembly  300  may include a first driving coil  310  and a first driving magnet  320 . The first driving coil  310  may be disposed on the first surface of the housing  100 , and the first driving magnet  320  may be disposed on the first surface of the first frame  210 . The first surface of the housing  100  and the first surface of the first frame  210  may be arranged to oppose each other. 
     The second driving assemblies  400 - 2  and  500 - 2  may be configured to move the lens module  200  in the first and second directions intersecting the optical axis C. For example, the second driving assemblies  400 - 2  and  500 - 2  may provide driving force required for movement of the second frame  220  and the third frame  230 . The second driving assemblies  400 - 2  and  500 - 2  may include second driving coils  410  and  510 , respectively, and a second driving magnets  420 - 2  and  520 - 2 , respectively. The second driving coils  410  and  510  may be arranged on second and third surfaces of the housing  100 , respectively, and the second driving magnets  420 - 2  and  520 - 2  may be arranged on second and third surfaces of the third frame  230 , respectively. For reference, the second surface of the housing  100  may be a surface opposing the second surface of the third frame  230 , and the third surface of the housing  100  may be a surface opposing the third surface of the third frame  230 . 
     The camera module  10 - 1  may include components for supplying a current to the driving assemblies  300 ,  400 - 2 , and  500 - 2 . For example, the camera module  10 - 1  may include the substrate  120 . The substrate  120  may be configured to supply a current required for driving the first driving assembly  300  and the second driving assemblies  400 - 2  and  500 - 2 . For example, the substrate  120  may supply a current to the first driving coil  310  and the second driving coils  410  and  510 . The substrate  120  may be configured to provide a space in which the first driving coil  310  and the second driving coils  410  and  510  are arranged. For example, the substrate  120  may be disposed to surround the first surface, the second surface, and the third surface of the housing  100 , to provide a space in which the first driving coil  310  and the second driving coils  410  and  510  are arranged in the housing  100 . The yoke  140  may be disposed on one side of the substrate  120 . 
     The camera module  10 - 1  may include components for detecting a position of the lens module  200 . For example, the camera module  10 - 1  may include a first position detecting sensor  610 , a second position detecting sensor  620 , and a third position detecting sensor  630 . The first position detecting sensor  610  may detect a displacement corresponding to movement of the lens module  200  in the direction of the optical axis C, and the second position detecting sensor  620  and the third position detecting sensor  630  may detect a displacement corresponding to movement of the lens module  200  in respective directions intersecting the optical axis C. The position detecting sensors  610 ,  620 , and  630  may be hall sensors that detect a magnitude of magnetic field generated from the driving assemblies  300 ,  400 - 2 , and  500 - 2 , respectively. The position detecting sensors  610 ,  620 , and  630  are not limited to hall sensors. The position detecting sensors  610 ,  620 , and  630  may be respectively disposed in a space respectively surrounded by the driving coils  310 ,  410 , and  510 . For example, the first position detecting sensor  610  may be disposed inside the first driving coil  310 , and the second position detecting sensor  620  and the third position detecting sensor  630  may be disposed inside the second driving coils  410  and  510 , respectively. 
     The camera module  10 - 1  may include a structure for binding the first frame  210  to the third frame  230 . For example, the camera module  10 - 1  may include the cover member  700  configured to bind the second frame  220  and the third frame  230  to the first frame  210 . The cover member  700  may be coupled to the first frame  210  in a state in which the first frame  210  to the third frame  230  are stacked, to prevent releases of the second frame  220  and the third frame  230  from the first frame  210 . The buffer member  830  may be formed in the cover member  700 . For example, a plurality of buffer members  830 , protruding in an upward direction, may be formed in an upper portion of the cover member  700 . The buffer member  830  may reduce impact due to collision between the lens module  200  and the shield can  900 . 
     The camera module  10 - 1  may include a structure for shielding electromagnetic waves. For example, the camera module  10 - 1  may include the shield can  900 . The shield can  900  may be formed to have a shape surrounding the housing  100 , the lens module  200 , and the cover member  700 . Therefore, intrusion or emission of harmful electromagnetic waves generated outside or inside the camera module  10 - 1  may be blocked by the shield can  900 . 
     Moving structures of the second frame  220  and the third frame  230  will be described below with reference to  FIGS.  6  and  7   . 
     Referring to  FIGS.  6  and  7   , the first frame  210 , the second frame  220 , and the third frame  230 , which constitute the lens module  200 , may be stacked and coupled in a direction of the optical axis. The first frame  210  may be configured to accommodate the second frame  220  and the third frame  230 . For example, the second frame  220  and the third frame  230  may be configured to move in a direction intersecting the optical axis C, while being accommodated inside the first frame  210 . 
     The second and third ball bearings  650  and  660  may be arranged between the first frame  210  to the third frame  230 . For example, the second ball bearing  650  may be disposed between the first frame  210  and the second frame  220 , and the third ball bearing  660  may be disposed between the second frame  220  and the third frame  230 . 
     Spaces for disposing the ball bearings may be formed in the first frame  210  to the third frame  230 . For example, the first groove  214  may be formed in an upper portion of the first frame  210 , the second groove  224  and the third groove  226  may be respectively formed in the upper and lower portions of the second frame  220 , and the fourth groove  234  may be formed in the lower portion of the third frame  230 . 
     Lengths of the grooves  224  and  234  respectively formed the lower portions of the second frame  220  and the third frame  230  may be formed differently, depending on moving directions of the second frame  220  and the third frame  230 . For example, a length (WY 2 ) of the groove  224  in the first direction may be greater than a length (WX 1 ) of the groove  224  in the second direction, and a length (WX 2 ) of the groove  234  in the second direction may be greater than a length (WY 1 ) of the groove  234  in the first direction. In addition, the length (WY 2 ) of the groove  224  in the first direction may be greater than a length (WY 1 ) of each of the grooves  226  and  234  in the first direction, and the length (WX 2 ) of the groove  234  in the second direction may be greater than a length (WX 1 ) of each of the grooves  214  and  224  in the second direction. 
     Since the length of the groove  224  of the second frame  220  in the first direction may be greater than a length of the groove  214  of the first frame  210  in the first direction, movement of the second frame  220  relative to the first frame  210  is possible. In addition, since the length of the grooves  234  of the third frame  230  in the second direction may be greater than a length of the grooves  226  of the second frame  220  in the second direction, movement of the third frame  230  relative to the second frame  220  is possible. 
     Next, an arrangement of the lens module  200  and the driving assemblies  300 ,  400 - 2 , and  500 - 2  will be described with reference to  FIGS.  8  and  9   . 
     Referring to  FIGS.  8  and  9   , driving assemblies  300 ,  400 - 2 , and  500 - 2  may be sequentially disposed on the first to third surfaces of the housing  100  around the lens module  200 . For example, the first driving assembly  300  may be disposed on the first surface of the housing  100  and the first surface of the first frame  210 , the second driving assembly  400 - 2  may be disposed on the second surface of the housing  100  and the second surface of the third frame  230 , and the second driving assembly  500 - 2  may be disposed on the third surface of the housing  100  and the third surface of the third frame  230 . 
     The lens module  200  may be moved in the direction of the optical axis C and in a direction intersecting the optical axis C by the driving assemblies  300 ,  400 - 2 , and  500 - 2 . For example, the lens module  200  may be moved in the direction of the optical axis C by the first driving assembly  300  (e.g., the first driving coil  310  and the first driving magnet  320 ). As another example, either one or both of the second frame  220  and the third frame  230  of the lens module  200  may move in the first and second directions intersecting the optical axis C, by combined force of the second driving assemblies  400 - 2  and  500 - 2  (e.g., the second driving coil  410 , the second driving magnet  420 - 2 , the second driving coil  510 , and the second driving magnet  520 - 2 ). 
     The camera module  10 - 1  may be configured to minimize magnetic field interference due to magnetic force generated from a driving assembly. For example, since a magnetic field generated by the driving assembly of this embodiment has a tendency to be recovered to a driving magnet through a driving coil, magnetic field interference and magnetic field effects on a neighboring driving assembly or a neighboring electronic component may be minimized. Structures of the second driving assemblies  400 - 2  and  500 - 2 , configured to minimize magnetic field interference, will be described with reference to  FIGS.  10 A to  10 C . 
     Referring to  FIGS.  10 A to  100   , the driving magnet  420 - 2  of the second driving assembly  400 - 2  may include the driving coil  410 , a driving magnet member  422 , and auxiliary magnet members  426  and  428 . The driving magnet  520 - 2  of the second driving assembly  500 - 2  may include the driving coil  510 , a driving magnet member  522 , and auxiliary magnet members  526 , and  528 . 
     The driving coil  410  may be configured to oppose the driving magnet member  422  and the auxiliary magnet members  426  and  428 . The driving coil  510  may be configured to oppose the driving magnet member  522  and the auxiliary magnet members  526  and  528 . The driving coils  410  and  510  may be generally respectively configured to allow a current to flow along a boundary between the driving magnet member  422  and each of the auxiliary magnet members  426  and  428 , and along a boundary between the driving magnet member  522  and each of the auxiliary magnet members  526  and  528 . 
     The auxiliary magnet members  426  and  428  may be disposed on opposite sides of the driving magnet member  422 , and auxiliary magnet members  526  and  528  may be disposed on opposite sides of the driving magnet member  522 . For example, the auxiliary magnet member  426 , the driving magnet member  422 , and the auxiliary magnet member  428  may be sequentially arranged in a first direction or a second direction intersecting the optical axis C. Similarly, for example the auxiliary magnet member  526 , the driving magnet member  522 , and the auxiliary magnet member  528  may be sequentially arranged in a first direction or a second direction intersecting the optical axis C. As illustrated in  FIG.  10   , the auxiliary magnet members  426  and  428  may be arranged to have polarities different from the polarity of the driving magnet member  422  the first direction, and the auxiliary magnet members  526  and  528  may be arranged to have polarities different from the polarity of the driving magnet member  522  in the first direction. For example, polarities of one surface of the auxiliary magnet member  426 , one surface of the driving magnet member  422 , and one surface of the auxiliary magnet member  428  may be an N pole, an S pole, and an N pole, respectively, as illustrated in  FIG.  10   . Similarly, polarities of one surface of the auxiliary magnet member  526 , one surface of the driving magnet member  522 , and one surface of the auxiliary magnet member  528  may be an N pole, an S pole, and an N pole, respectively. The driving magnets  422  and  522 , and the auxiliary magnet members  426 ,  428 ,  526 , and  528  may have polarities in a direction intersecting the first direction. For example, first and second polarities of the driving magnet members  422  and  522  and first and second polarities of the auxiliary magnet members  426 ,  428 ,  526 , and  528  may be formed in a direction intersecting the first direction (in a direction opposing the respective driving coils  410  and  510 ), as illustrated in  FIG.  10   . The auxiliary magnet members  426 ,  428 ,  526 , and  528  may have a predetermined size relationship with the respective driving magnets  422  and  522 . For example, a length Lm 2  of each of the auxiliary magnet members  426 ,  428 ,  526 , and  528  in the first direction may be less than a length Lm 1  of the respective driving magnet members  422  and  522  in the first direction. 
     The auxiliary magnet members  426 ,  428 ,  526 , and  528  may be integrally formed with the respective driving magnet members  422  and  522 . For example, the auxiliary magnet members  426 ,  428 ,  526 , and  528 , and the driving magnet members  422  and  522  may be formed by a series of processes that form one or more polarities in a single magnetic body, as shown in  FIGS.  10 A and  10 B . Alternatively, the auxiliary magnet members  426 ,  428 ,  526 , and  528  may be disposed at a predetermined distance from the respective driving magnet members  422  and  522 , as shown in  FIG.  100   . For example, a physical gap may be formed, or a neutral region having substantially no polarity may be formed between the auxiliary magnet members  426 ,  428 ,  526 , and  528 , and the respective driving magnet members  422  and  522 . 
     The driving coils  410  and  510  may have a predetermined size relationship with the respective driving magnet members  422  and  522 , and the respective auxiliary magnet members  426 ,  428 ,  526 , and  528 . For example, a length Lc 1  of each of the driving coils  410  and  510  in the first direction may be greater than the length Lm 1  of the respective driving magnet members  422  and  522  in the first direction, and the length Lm 2  of each of the respective auxiliary magnet members  426 ,  428 ,  526  and  528  in the first direction. As another example, the length Lc 1  of each of the driving coils  410  and  510  may be a total sum (i.e., Lm 2 +Lm 1 +Lm 2 ) of the length of the respective driving magnet members  422  and  522  and the length of the respective auxiliary magnet members  426 ,  428 ,  526 , and  528 , arranged in the first direction. As another example, a height hc of an outer circumferential surface of each of the driving coils  410  and  510  may be greater than a height hm of the respective driving magnet members  422  and  522  and the respective auxiliary magnet members  426 ,  428 ,  526  and  528 . As another example, a height hch of an inner circumferential surface of each of the driving coils  410  and  510  may be less than the height hm of the respective driving magnet members  422  and  522  and the respective auxiliary magnet members  426 ,  428 ,  526  and  528 . Since the driving coils  410  and  510 , configured as described above, may be configured to allow a current to flow along a boundary between each of the driving magnets  422  and  522  and each of the auxiliary magnets  426 ,  428 ,  526  and  528 , and an edge of each of the driving magnets  422  and  522 , a magnetic field may be formed to provide attractive force and repulsive force in a direction opposing the driving magnets  422  and  522 . 
     The second driving assemblies  400 - 2  and  500 - 2 , configured as described above, may be configured such that a magnetic field generated by the respective driving coils  410  and  510 , the respective driving magnet members  422  and  522 , and the respective auxiliary magnet members  426 ,  428 ,  526 , and  528  is focused on a central portion of winding of the driving coils  410  and  510 . Therefore, a camera module  10 - 1  may minimize magnetic field interference that may be caused by the second driving assemblies  400 - 2  and  500 - 2 . 
       FIG.  11    illustrates second driving assemblies  400 - 3  and  500 - 3 , which are modified forms of the driving assemblies  400 - 2  and  500 - 2 , according to an embodiment. 
     Referring to  FIG.  11   , the second driving assembly  400 - 3  may include driving coils  412  and  414 , driving magnet members  422  and  424 , and auxiliary magnet members  426  and  428 . The second driving assembly  500 - 3  may include driving coils  512  and  514 , driving magnet members  522  and  524 , and auxiliary magnet members  526  and  528 . 
     The driving coils  412  and  414  may be configured to oppose the driving magnet members  422  and  424 , respectively, and the auxiliary magnet members  426  and  428 , respectively. The driving coils  512  and  514  may be configured to oppose the driving magnet members  522  and  524 , respectively, and the auxiliary magnet members  526 , and  528 , respectively. The driving coils  412  and  414  may be generally configured to allow a current to flow along a boundary of each of the driving magnet members  422  and  424 . The driving coils  512  and  514  may be generally configured to allow a current to flow along a boundary of each of the driving magnet members  522  and  524 . 
     The driving magnet members  422  and  424  may be sequentially arranged in the first direction. The driving magnet members  522  and  524  may be sequentially arranged in the first direction. The auxiliary magnet members  426  and  428  may be disposed on one side of the driving magnet members  422  and  424 , respectively. The auxiliary magnet members  526  and  528  may be disposed on one side of the driving magnet members  522  and  524 , respectively. 
     For example, as illustrated in  FIG.  11   , the auxiliary magnet member  426 , the driving magnet member  422 , the driving magnet member  424 , and the auxiliary magnet member  428  may be continuously arranged in the first direction. For example, as illustrated in  FIG.  11   , the auxiliary magnet member  526 , the driving magnet member  522 , the driving magnet member  524 , and the auxiliary magnet member  528  may be continuously arranged in the first direction. 
     The auxiliary magnet members  426 ,  428 ,  526 , and  528  may be arranged to have different polarities from the driving magnet members  422 ,  424 ,  522 , and  524 , respectively, in the first direction. For example, polarities of one surface of the auxiliary magnet member  426 , one surface of the driving magnet member  422 , one surface of the driving magnet member  424 , and one surface of the auxiliary magnet member  428  may be an S pole, an N pole, an S pole, and an N pole, respectively, as illustrated in  FIG.  11   . For example, polarities of one surface of the auxiliary magnet member  526 , one surface of the driving magnet member  522 , one surface of the driving magnet member  524 , and one surface of the auxiliary magnet member  528  may be an S pole, an N pole, an S pole, and an N pole, respectively. The driving magnet members  422 ,  424 ,  522 , and  524 , and the auxiliary magnet members  426 ,  428 ,  526 , and  528  may have polarities in a direction intersecting the first direction. For example, first and second polarities of the driving magnet members  422 ,  424 ,  522 , and  524 , and first and second polarities of the auxiliary magnet members  426 ,  428 ,  526 , and  528  may be respectively formed in a direction intersecting the first direction (in a direction opposing the respective driving coils  412 ,  414 ,  512 , and  514 ), as illustrated in  FIG.  11   . The auxiliary magnet members  426 ,  428 ,  526 , and  528  may respectively have a predetermined size relationship with the driving magnet members  422 ,  424 ,  522 , and  524 . For example, a length Lm 2  of each of the auxiliary magnet members  426 ,  428 ,  526 , and  528  in the first direction may be less than a length Lm 1  of the respective driving magnet members  422 ,  424 ,  522 , and  524  in the first direction. 
     The driving coils  412 ,  414 ,  512 , and  514  may have a predetermined size relationship with the driving magnet members  422 ,  424 ,  522 , and  524 , respectively, and the auxiliary magnet members  426 ,  428 ,  526 , and  528 , respectively. For example, a length Lc 1  of each of the driving coils  412 ,  414 ,  512 , and  514  in the first direction may be greater than the length Lm 1  of the respective driving magnet members  422 ,  424 ,  522 , and  524  in the first direction, and the length Lm 2  of the respective auxiliary magnet members  426 ,  428 ,  526 , and  528  in the first direction. As another example, a height hc of an outer circumferential surface of each of the driving coils  412 ,  414 ,  512 , and  514  may be greater than a height hm of the respective driving magnet members  422 ,  424 ,  522 , and  524 , and the respective auxiliary magnet members  426 ,  428 ,  526 , and  528 . As another example, a height hch of an inner circumferential surface of each of the driving coils  412 ,  414 ,  512 , and  514  may be less than the height hm of the respective driving magnet members  422 ,  424 ,  522 , and  524 , and the respective auxiliary magnet members  426 ,  428 ,  526 , and  528 . Since the driving coils  412 ,  414 ,  512 , and  514 , configured as described above, may be configured to allow a current to flow along a boundary between each of the respective driving magnet members  422 ,  424 ,  522 , and  524  and each of the respective auxiliary magnet members  426 ,  428 ,  526 , and  528 , and an edge of each of the driving magnet members  422 ,  424 ,  522 , and  524 , a magnetic field may be formed to provide attractive force and repulsive force in a direction opposing the driving magnet members  422 ,  424 ,  522 , and  524 . 
     Since a magnetic field generated by the driving coils  412 ,  414 ,  512 , and  514 , the respective driving magnet members  422 ,  424 ,  522 , and  524 , and the respective auxiliary magnet members  426 ,  428 ,  526 , and  528  may be recovered by respective neighboring driving magnet members  422  and  522  and auxiliary magnet members  426  and  526 , the second driving assemblies  400 - 3  and  500 - 3 , configured as described above, may minimize magnetic field interference to neighboring electronic components or electronic devices. 
     The camera module  10  may be mounted in a portable terminal  20 , as illustrated in  FIG.  12   . The portable terminal  20  may further include other camera modules  12  and  14 , in addition to the camera module  10 . The camera modules  10 ,  12 , and  14  may be arranged adjacently in a direction. One or more of the camera modules  12  and  14  may include a driving assembly for a focus adjustment function or an optical image stabilization (OIS) function. The driving assembly may be provided to include a magnet and a coil. Therefore, the camera modules  10 ,  12 , and  14  may cause magnetic field interference to neighboring camera modules. Since the camera module  10  may include a driving assembly capable of minimizing the magnetic field interference as described above, it is possible to enable an accurate focus adjustment function or an accurate optical image stabilization (OIS) function of the camera modules  12  and  14 . In addition, since the camera module  10  may be disposed between the camera modules  12  and  14  to suppress magnetic field interference between the camera module  12  and the camera module  14 , a more compact arrangement of the camera modules  10 ,  12 , and  14  may be implemented. Although the foregoing description refers to the camera module  10 , the camera module  10 - 1  may also be implemented in the portable terminal  20 . 
       FIG.  13    illustrates a camera module  10 - 2 , according to an embodiment. 
     The camera module  10 - 2  may include, for example, the housing  100 , the lens barrel  160 , the lens module  200 , the first driving assembly  300 , and second driving assemblies  400 - 4  and  500 - 4 . A configuration of the camera module  10 - 2  is not limited to the above-mentioned members. For example, the camera module  10 - 2  may further include the substrate  120 , the yoke  140 , the first position detecting sensor  610 , the second position detecting sensor  620 , the third position detecting sensor  630 , the first ball bearing  640 , the second ball bearing  650 , the third ball bearing  660 , the cover member  700 , the buffer member  830 , and the shield can  900 . 
     The housing  100  may be formed as a cube having open upper and lower surfaces. For example, the housing  100  may be configured in a substantially hexahedral shape. Three (3) side surfaces of the housing  100  may be partially incised. Driving force of the first driving assembly  300  and the second driving assemblies  400 - 4  and  500 - 4  may be transmitted to the lens module  200  through the incised side surfaces. The pair of first guide grooves  102  may be formed inside the first surface of the housing  100 . The first guide groove  102  may be formed to be elongated in the height direction of the housing  100 . The first ball bearing  640  may be disposed in the first guide groove  102 . 
     The lens module  200  may be disposed inside the housing  100 . The lens module  200  may be configured to move in the direction of the optical axis C and in a direction intersecting the optical axis C within the housing  100 . The lens module  200  may include a plurality of members. For example, the lens module  200  may include the first frame  210 , the second frame  220 , and the third frame  230 . 
     The first frame  210  may be formed to be open in a vertical direction and to have two (2) closed side surfaces and two (2) open side surfaces. The pair of second guide grooves  212  may be formed on the first surface of the first frame  210 . The first ball bearing  640  may be disposed in the second guide groove  212 . The first frame  210  may be disposed inside the housing  100 . The first frame  210  may be configured to move in a direction of the optical axis C ( FIG.  1   ) with respect to the housing  100 . For example, the first frame  210  may be in point contact with or in line contact with the first ball bearing  640  to move in the direction of the optical axis C. Driving force required for driving the first frame  210  may be provided by the first driving assembly  300 . The first groove  214  may be formed in each of the four (4) internal corners of the first frame  210 . The first groove  214  may have an elongated shape. For example, the first groove  214  may be formed to be elongated in the first direction intersecting the optical axis C. The second ball bearing  650  may be disposed in the first groove  214 . 
     The second frame  220  may have a generally thin plate shape that is open in the vertical direction. The second frame  220  may be disposed on the first frame  210 , and may be configured to move in the first direction intersecting the optical axis C. For example, the second frame  220  may be enabled to move in the first direction intersecting the optical axis C by the second ball bearing  650  being disposed between the first frame  210  and the second frame  220 . Driving force required for driving the second frame  220  may be provided by the second driving assembly  400 - 4 . The second groove  224  and the third groove  226  may be formed in the second frame  220 . The second groove  224  may be formed in the lower portion of the second frame  220 , and the third groove  226  may be formed in the upper portion of the second frame  220 . The second groove  224  may be formed to be elongated in the first direction intersecting the optical axis C. The second groove  224  may form the space for accommodating the second ball bearing  650 , together with the first groove  214 . The third groove  226  may be formed to be elongated in the second direction intersecting the optical axis C and the first direction intersecting the optical axis C. 
     The third frame  230  may be formed to be open in the vertical direction and to have a predetermined height. The third frame  230  may be disposed on the second frame  220 , and may be configured to move in the second direction intersecting the optical axis C. For example, the third frame  230  may be enabled to move in the second direction intersecting the optical axis C by the third ball bearing  660  being disposed between the second frame  220  and the third frame  230 . Driving force required for driving the third frame  230  may be provided by the second driving assembly  400 - 4 . The fourth groove  234  may be formed in the lower portion of the third frame  230 . The fourth groove  234  may be formed to be elongated in the second direction intersecting the optical axis C. The fourth groove  234  may form the space for accommodating the third ball bearing  660 , together with the third groove  226 . 
     The lens barrel  160  may be combined with the third frame  230 . The lens barrel  160  may be moved by the lens module  200  in the direction of the optical axis C and in a direction intersecting the optical axis C. For example, the lens barrel  160  may be moved in the direction of the optical axis C by the first frame  210 . As another example, the lens barrel  160  may be moved in the first and second directions intersecting the optical axis C by the second frame  220  and the third frame  230 . Movement of the lens barrel  160  in the direction of the optical axis C may enable focus adjustment of the camera module  10 - 2 , and movement of the lens barrel  160  in a direction intersecting the optical axis C may perform an optical image stabilization (OIS) function of the camera module  10 - 2 . 
     The first driving assembly  300  may be configured to move the lens module  200  in the direction of the optical axis C. For example, the first driving assembly  300  may provide driving force required to move the first frame  210  in the direction of the optical axis C. The first driving assembly  300  may include the first driving coil  310  and the first driving magnet  320 . The first driving coil  310  may be disposed on the first surface of the housing  100 , and the first driving magnet  320  may be disposed on the first surface of the first frame  210 . The first surface of the housing  100  and the first surface of the first frame  210  may be arranged to oppose each other. 
     The second driving assemblies  400 - 4  and  500 - 4  may be configured to move the lens module  200  in the first and second directions intersecting the optical axis C. For example, the second driving assemblies  400 - 4  and  500 - 4  may provide driving force required for movement of the second frame  220  and the third frame  230 . The second driving assembly  400 - 4  may include second driving coils  412  and  414 , and a second driving magnet  420 - 4 . The second driving assembly  500 - 4  may include second driving coils  512  and  514 , and a second driving magnet  520 - 4 . The second driving coils  412  and  414  may be arranged on the second surface of the housing  100 , and the second driving coils  512  and  514  may be arranged on the third surface of the housing  100 . The second driving magnet  420 - 4  may be arranged on the second surface of the third frame  230 , and the second driving magnet  520 - 4  may be arranged on the third surface of the third frame  230 . For reference, the second surface of the housing  100  may be a surface opposing the second surface of the third frame  230 , and the third surface of the housing  100  may be a surface opposing the third surface of the third frame  230 . 
     The camera module  10 - 2  may include components for supplying a current to the driving assemblies  300 ,  400 - 4 , and  500 - 4 . For example, the camera module  10 - 2  may include the substrate  120 . The substrate  120  may be configured to supply a current required for driving the first driving assembly  300  and the second driving assemblies  400 - 4  and  500 - 4 . For example, the substrate  120  may supply the current to the first driving coil  310  and the second driving coils  412 ,  412 ,  114 ,  512 , and  514 . The substrate  120  may be configured to provide the space in which the first driving coil  310  and the second driving coils  412 ,  412 ,  114 ,  512 , and  514  are arranged. For example, the substrate  120  may be disposed to surround the first surface, the second surface, and the third surface of the housing  100 , to provide the space in which the first driving coil  310  and the second driving coils  412 ,  412 ,  114 ,  512 , and  514  are arranged in the housing  100 . The yoke  140  may be disposed on one side of the substrate  120 . 
     The camera module  10 - 2  may include a structure for binding the first frame  210  to the third frame  230 . For example, the camera module  10 - 2  may include the cover member  700  for binding the second frame  220  and the third frame  230  to the first frame  210 . The cover member  700  may be coupled to the first frame  210  in a state in which the first frame  210  to the third frame  230  are stacked, to prevent releases of the second frame  220  and the third frame  230  from the first frame  210 . The buffer member  830  may be formed in the cover member  700 . For example, a plurality of buffer members  830 , protruding in an upward direction, may be formed in the upper portion of the cover member  700 . The buffer member  830  may reduce impact due to collision between the lens module  200  and the shield can  900 . 
     The camera module  10 - 2  may include a structure for shielding electromagnetic waves. For example, the camera module  10 - 2  may include the shield can  900 . The shield can  900  may be formed to have a shape surrounding the housing  100 , the lens module  200 , and the cover member  700 . Therefore, intrusion or emission of harmful electromagnetic waves generated outside or inside the camera module  10  may be blocked by the shield can  900 . 
     The camera module  10 - 2  may include of the first position detecting sensor  610 , the second position detecting sensor  620 , and the third position detecting sensor  630 . The first position detecting sensor  610  may detect a displacement in movement of the lens module  200  in the direction of the optical axis C, and the second position detecting sensor  620  and the third position detecting sensor  630  may detect a displacement in movement of the lens module  200  in a direction intersecting the optical axis C. The position detecting sensors  610 ,  620 , and  630  may be hall sensors that detect a magnitude of magnetic field generated from the driving assemblies  300 ,  400 - 4 , and  500 - 4 , respectively. The position detecting sensors  610 ,  620 , and  630  are not limited to hall sensors. The position detecting sensors  610 ,  620 , and  630  may be respectively disposed in a space respectively surrounded by the driving coils  310 ,  412 / 414 , and  512 / 514 . For example, the first position detecting sensor  610  may be disposed inside the first driving coil  310 , the second position detecting sensor  620  may be disposed inside of the second driving coil  412  or the second driving coil  414 , and the third position detecting sensor  630  may be disposed inside of the second driving coil  512  or  514 . 
     Structures of second driving assemblies  400 - 4  and  500 - 4  configured to minimize magnetic field interference will be described with reference to  FIGS.  14 A to  14 C . 
     Referring to  FIGS.  14 A to  14 C , the second driving assemblies  400 - 4  and  500 - 4  may include of the second driving coils  412 ,  414 ,  512 , and  514 , driving magnet members  422  and  424  constituting the second driving magnet  420 - 4 , and driving magnet members  522  and  524  constituting the second driving magnet  520 - 4 , such that the second driving coils  412 ,  414 ,  512 , and  514  and the driving magnet members  422 ,  424 ,  522 , and  524  are the same in number. The second driving coils  412  and  414  and the second driving coils  512  and  514  may be respectively arranged side-by-side in the first direction. The driving magnet members  422  and  424  and the driving magnet members  522  and  524  may be respectively arranged side-by-side in the first direction. For example, the second driving coils  412  and  512  may be arranged to oppose the driving magnet members  422  and  522 , respectively, and the driving coils  414  and  514  may be arranged to oppose the driving magnet members  424  and  524 , respectively. 
     The driving coils  412 ,  414 ,  512 , and  514  may be generally configured to allow a current to flow along a boundary between and edges of the respective driving magnet members  422  and  522 ,  424 , and  524 . For example, the driving coils  412  and  512  may be arranged to flow a current along edges of the respective driving magnet members  422  and  522  and a boundary between the respective driving magnet members  422  and  522  and the respective driving magnet members  424  and  524 , and the driving coils  414  and  514  may be arranged to flow a current along a boundary between the respective driving magnet members  422  and  522  and the respective driving magnet members  424  and  524  and along edges of the respective driving magnet members  424  and  524 . The driving coils  412  and  512  may be arranged at intervals from the driving coils  414  and  514 , respectively. For example, the driving coils  412  and  512  and the driving coils  414  and  514  may be arranged at intervals, based on the boundary between the respective driving magnet members  422  and  522  and the respective driving magnet members  424  and  524 . The driving coils  412 ,  414 ,  512 , and  514  may be configured to allow a current to flow in the same direction at the boundary between the respective driving magnet members  422  and  522  and the respective driving mag magnet members nets  424  and  524 . 
     The driving coils  412 ,  414 ,  512 , and  514  may have a predetermined size relationship with the driving magnet members  422 ,  424 ,  522 , and  524 , respectively. For example, a length Lc 1  of each of the driving coils  412 ,  414 ,  512 , and  514  in the first direction may be greater than a length (Lm 1 ) of the driving magnet members  422 ,  424 ,  522 , and  524 , respectively, in the first direction. As another example, a height hc of an outer circumferential surface of each of the driving coils  412 ,  414 ,  512 , and  514  may be greater than a height hm of the driving magnet members  422 ,  424 ,  522 , and  524 , respectively, and a height hch of an inner circumferential surface of each of the driving coils  412 ,  414 ,  512 , and  514  may be less than a height hm of the driving magnet members  422 ,  424 ,  522 , and  524 , respectively. 
     A camera module according to embodiments disclosed herein may reduce magnetic field interference between driving assemblies of the camera module, and magnetic field interference between a driving assembly of the camera module and an electronic device disposed around the camera module. 
     While this disclosure includes specific examples, it will be apparent after an understanding of the disclosure of this application that various changes in form and details may be made in these examples without departing from the spirit and scope of the claims and their equivalents. The examples described herein are to be considered in a descriptive sense only, and not for purposes of limitation. Descriptions of features or aspects in each example are to be considered as being applicable to similar features or aspects in other examples. Suitable results may be achieved if the described techniques are performed in a different order, and/or if components in a described system, architecture, device, or circuit are combined in a different manner, and/or replaced or supplemented by other components or their equivalents. Therefore, the scope of the disclosure is defined not by the detailed description, but by the claims and their equivalents, and all variations within the scope of the claims and their equivalents are to be construed as being included in the disclosure.