Camera Module

Abstract

A camera module comprises: a housing, a lens barrel configured to be movable in an optical axis direction, a barrel bracket connected to the lens barrel and disposed in the housing, a lens barrel driving unit configured to drive the lens barrel in the optical axis direction and comprising a driving magnet and a driving coil, and a position recovery member configured to face the driving magnet in a direction intersecting the optical axis, wherein the total length of the position recovery member in the optical axis direction is less than the total length of the position recovery member in the optical axis direction to limit the displacement of the lens barrel in the optical axis direction.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of priority from Korean Patent Application No. 10-2020-0115537 filed on September 9, 2020, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein in its entirety for all purposes by reference. Technical Field

[0003] The following description relates to a camera module. Background Art

[0004] The camera module may include a lens barrel that accommodates the lens. Such a lens barrel may be configured to be movable within the camera module when realizing autofocus or optical image stabilization (OIS) of the camera module. For example, the lens barrel may be movable in the housing of the camera module in the direction of the optical axis or in a direction intersecting the optical axis. Typically, the controlled movement of the lens barrel is realized by the camera module. However, other movements of this lens barrel, for example, due to external influences (e.g., when a user walks or runs fast while holding a corresponding mobile terminal equipped with a camera module), may also typically occur. This movement may further result in collisions between the lens barrel and other components of a typical camera module. Summary of the invention

[0005] The purpose of providing this summary is to introduce a selection of inventive concepts in a concise form, and these inventive concepts will be further described in the following detailed description. This summary is not intended to identify the key features or essential features of the claimed subject matter, nor is it intended to be used to help determine the scope of the claimed subject matter.

[0006] In a general aspect, a camera module includes: a housing; a lens barrel disposed in the housing; a lens barrel driving unit including a driving magnet and a driving coil configured to drive the lens barrel along an optical axis direction; and a position recovery member disposed to face the driving magnet, wherein a conditional expression Yh<(Mh-AFL / 2) is satisfied, wherein Yh is the total length of the position recovery member in the optical axis direction, Mh is the total length of the driving magnet in the optical axis direction, and AFL is the maximum displacement of the lens barrel in the optical axis direction.

[0007] The camera module may also include one or more ball bearings disposed between the lens barrel and the housing.

[0008] The lens barrel driving unit may include a first driving magnet and a first driving coil configured to provide a driving force to one side of the lens barrel, and a second driving magnet and a second driving coil configured to provide another driving force to the other side of the lens barrel.

[0009] The first drive magnet may be configured to have an overall length (ML1) that is different from an overall length (ML2) of the second drive magnet.

[0010] A ratio (ML1 / ML2) between a total length (ML1) of the first driving magnet and a total length (ML2) of the second driving magnet may be 0.3 to 0.7.

[0011] The position restoration member may be disposed to face the first driving magnet, and Mh may be a total length of the first driving magnet in the optical axis direction, and the camera module may further include another position restoration member disposed to face the second driving magnet.

[0012] Another conditional expression Yh2<(Mh2-AFL / 2) may be satisfied, where Yh2 may be the total length of the other position restoration member in the optical axis direction, and Mh2 may be the total length of the second driving magnet in the optical axis direction.

[0013] The total length (Yh) of the position restoration member in the optical axis direction may be smaller than the total length (Mh) of the driving magnet in the optical axis direction.

[0014] In a general aspect, a camera module includes: a housing; a lens barrel configured to be movable along an optical axis; a barrel holder connected to the lens barrel and disposed in the housing; a lens barrel driving unit configured to drive the lens barrel along the optical axis and including a driving magnet and a driving coil; and a position recovery member configured to face the driving magnet along a direction intersecting the optical axis, wherein a total length of the position recovery member in the optical axis direction is less than a total length of the driving magnet in the optical axis direction to limit the displacement of the lens barrel in the optical axis direction.

[0015] The position restoration member may apply a passive attractive force to the driving magnet to restrict displacement of the lens barrel in the optical axis direction.

[0016] The camera module may further include one or more ball bearings disposed between the guide groove of the housing and the guide groove of the barrel bracket.

[0017] The one or more ball bearings may include two or more ball bearings, wherein the two or more ball bearings may be disposed at diagonal portions of the housing and the barrel bracket, respectively.

[0018] The one or more ball bearings may include two or more ball bearings, wherein the two or more ball bearings may be disposed between a surface of the housing and a surface of the barrel bracket.

[0019] The lens barrel driving unit may include a first driving magnet and a first driving coil, which are configured to provide a driving force to one side of the lens barrel, and may include a second driving magnet and a second driving coil, which are configured to provide another driving force to the other side of the lens barrel.

[0020] The first drive magnet may be configured to have an overall length (ML1) that is different from an overall length (ML2) of the second drive magnet.

[0021] A ratio (ML1 / ML2) between a total length (ML1) of the first driving magnet and a total length (ML2) of the second driving magnet may be 0.3 to 0.7.

[0022] The position recovery member may be arranged to face the first driving magnet, Yh1 may be the total length of the position recovery member in the optical axis direction, Mh1 may be the total length of the first driving magnet in the optical axis direction, AFL is the maximum displacement of the lens barrel in the optical axis direction, and the conditional expression Yh1<(Mh1-AFL / 2) may be satisfied, and the camera module may further include another position recovery member arranged to face the second driving magnet, wherein Yh2 may be the total length of the other position recovery member in the optical axis direction, Mh2 may be the total length of the second driving magnet in the optical axis direction, and another conditional expression Yh2<(Mh2-AFL / 2) may be satisfied.

[0023] The camera module may further include a circuit board disposed around the opening portion of the housing and electrically connected to the driving coil.

[0024] The camera module may further include a shield case coupled to the housing and configured to block external electromagnetic waves.

[0025] The camera module may further include a clamp member coupled to the barrel mount, and a buffer member disposed on the clamp member.

[0026] Other features and aspects will become apparent from the following detailed description, the accompanying drawings, and the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is an exploded perspective view of an exemplary camera module according to one or more embodiments.

[0028] Figure 2 is a perspective view of an exemplary camera module according to one or more embodiments.

[0029] Figure 3 is a cross-sectional view of an exemplary camera module according to one or more embodiments.

[0030] Figure 4 is an exploded perspective view of an exemplary camera module according to one or more embodiments.

[0031] Figure 5 is a perspective view of an exemplary camera module according to one or more embodiments.

[0032] Figure 6 is a cross-sectional view of an exemplary camera module according to one or more embodiments.

[0033] Figure 7 is an exploded perspective view of an exemplary camera module according to one or more embodiments.

[0034] Figure 8 is a perspective view of an exemplary camera module according to one or more embodiments.

[0035] Fig. 9 is a cross-sectional view of an exemplary camera module according to one or more embodiments.

[0036] Fig.10 is an exploded perspective view of an example camera module according to one or more embodiments.

[0037] Fig.11 is a combined perspective view of an exemplary camera module according to one or more embodiments.

[0038] Fig.12 is a cross-sectional view of an exemplary camera module according to one or more embodiments.

[0039] In all drawings and detailed descriptions, unless otherwise described or provided, the same reference numerals will be understood to refer to the same elements, features and structures. For the purpose of clarity, illustration and convenience, the drawings may not be drawn to scale, and the relative sizes, proportions and depictions of the elements in the drawings may be exaggerated. DETAILED DESCRIPTION

[0040] The following specific embodiments are provided to help the reader obtain a comprehensive understanding of the method, device and / or system described herein. However, after understanding the disclosure of the application, various changes, modifications and equivalences of the method, device and / or system described herein will be apparent. For example, except for the operations that must occur in a specific order, the order of the operations described herein is merely an example, and is not limited to the order set forth in this article, but changes that will be apparent after understanding the disclosure of the application can be made. In addition, in order to increase clarity and brevity, the description of features known after understanding the disclosure of the application can be omitted, and it should be noted that the purpose of omitting features and their description is not to admit that they are general knowledge.

[0041] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein are provided merely to illustrate some of the many possible ways of implementing the methods, devices, and / or systems described herein, which will be apparent after understanding the disclosure of the present application.

[0042] Herein, it should be noted that use of the word “may” with respect to an embodiment or example (e.g., with respect to what an embodiment or example may include or implement) means that there is at least one embodiment or example that includes or implements such feature, and all embodiments and examples are not limited thereto.

[0043] Throughout the specification, when an element such as a layer, a region, or a substrate is described as being “on,” “connected to,” or “coupled to” another element, the element may be directly “on,” “connected to,” or “coupled to” another element, or one or more other elements may be present between the element and the other element. Conversely, when an element is described as being “directly on,” “directly connected to,” or “directly coupled to” another element, no other elements may be present between the element and the other element.

[0044] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.

[0045] Although the terms "first", "second" and "third" may be used herein to describe various members, components, regions, layers or parts, these members, components, regions, layers or parts are not limited by these terms. More specifically, these terms are only used to distinguish one member, component, region, layer or part from another member, component, region, layer or part. Therefore, without departing from the teachings of the examples described herein, the first member, first component, first region, first layer or first part mentioned in the examples may also be referred to as the second member, second component, second region, second layer or second part.

[0046] Spatially relative terms such as "above", "higher", "below", and "lower" may be used herein for descriptive convenience to describe the relationship of one element relative to another element as shown in the accompanying drawings. In addition to covering the orientations depicted in the accompanying drawings, these spatially relative terms are intended to also cover different orientations of the device in use or operation. For example, if the device in the accompanying drawings is flipped, an element described as being "above" or "higher" relative to another element will be "below" or "lower" relative to the other element. Therefore, depending on the spatial orientation of the device, the term "above" covers both "above" and "below" orientations. The device may also be oriented in other ways (e.g., rotated 90 degrees or in other orientations), and the spatially relative terms used herein should be interpreted accordingly.

[0047] The terms used herein are only used to describe various examples and are not intended to limit the present disclosure. Unless the context clearly indicates otherwise, the articles "a", "an" and "the" are intended to include plural forms as well. The words "include", "comprise" and "have" illustrate the presence of stated features, numbers, operations, components, elements and / or combinations thereof, but do not exclude the presence or addition of one or more other features, numbers, operations, components, elements and / or combinations thereof.

[0048] Due to manufacturing techniques and / or tolerances, the shapes shown in the drawings may vary. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include shape variations that occur during manufacturing.

[0049] The features of the embodiments described herein can be combined in various ways, which will be apparent after obtaining an understanding of the disclosure of the present application. In addition, although the examples described herein have multiple configurations, other configurations that will be apparent after obtaining an understanding of the disclosure of the present application are also possible.

[0050] As described above, in a typical camera module, the lens barrel may be actively moved to perform the intended function of the camera module, but may also be passively moved due to external impact. For example, depending on the type of activity of the mobile terminal user, such a lens barrel in a typical camera module may shake along the optical axis direction within the camera module. Such shaking of the lens barrel may cause noise and camera module malfunction.

[0051] Figure 1 is an exploded perspective view of an exemplary camera module according to one or more embodiments. Figure 2 is a perspective view of an exemplary camera module according to one or more embodiments.

[0052] For example, one or more embodiments may include a portable electronic product that includes a camera module. For example, the portable or mobile electronic product or device may be a mobile phone, a notebook computer, etc. However, other embodiments other than such electronic products also exist in the example camera module. Therefore, the examples are not limited to such portable or mobile electronic products, and embodiments exist in all electronic devices that include a camera module, including examples having one or more camera modules on one or more surfaces of the electronic product.

[0053] The camera module includes a lens barrel. The lens barrel can move within the camera module to perform unique functions of the camera module. For example, the lens barrel can move in the direction of the optical axis.

[0054] One or more embodiments can reduce or prevent passive movement of a lens barrel within a camera module. In an example, the camera module includes a drive magnet and a position recovery member, and is configured to significantly reduce shake of the lens barrel due to, for example, external impact.

[0055] For example, the camera module 10 according to the example includes a housing 100, a lens barrel 200, a driving unit 400, and a position recovery member 500. However, the configuration of the camera module 10 is not limited to the above configuration. For example, the camera module 10 may further include a substrate 700 to be connected to some components of the driving unit 400, and may include an image sensor.

[0056] The housing 100 may be configured to have a polyhedron shape with a substantially quadrilateral cross section and a predetermined height. However, the shape of the housing 100 is not limited to a polyhedron shape with a quadrilateral cross section. The housing 100 is configured to accommodate the lens barrel 200. For example, a space capable of accommodating at least a portion of the lens barrel 200 may be formed inside the housing 100. The housing 100 is configured to allow the lens barrel 200 to move in the optical axis C direction. For example, the upper surface and the lower surface of the housing 100 may be open. The housing 100 may be configured to be able to set the drive unit 400. For example, the opening 106 may be formed on one side of the housing 100 so that different components of the drive unit 400 may be arranged to directly face each other.

[0057] The lens barrel 200 includes one or more lenses. For example, the lens barrel 200 may include four or more lenses. However, the number of lenses accommodated in the lens barrel 200 is not limited to four. For example, the lens barrel 200 may be configured to accommodate 3 or less or 5 or more lenses. The lens barrel 200 is configured to be accommodated in the housing 100. For example, the cross-sectional dimensions of the lens barrel 200 may be smaller than the inner cross-sectional dimensions of the housing 100. The lens barrel 200 may move in the optical axis C direction. For example, the lens barrel 200 may be moved in the optical axis C direction by the driving force of the driving unit 400 while being accommodated in the housing 100.

[0058] The driving unit 400 may provide a driving force required to drive the lens barrel 200. For example, the driving unit 400 may drive the lens barrel 200 in the direction of the optical axis C by magnetic force. The driving unit 400 may include a driving magnet 410 and a driving coil 420. The driving magnet 410 may be disposed on the lens barrel 200. For example, the driving magnet 410 may be disposed on one side of the lens barrel 200. The driving magnet 410 may be disposed to substantially face the driving coil 420. For example, the driving magnet 410 and the driving coil 420 may be disposed to face each other through the opening 106 of the housing 100. The driving coil 420 may be disposed in the opening 106 of the housing 100. For example, the driving coil 420 may be disposed in the opening 106 using a substrate 700 connected to a side surface of the housing 100.

[0059] The position recovery member 500 may be arranged to directly or indirectly face the driving magnet 410 of the driving unit 400. For example, the position recovery member 500 may be arranged outside the opening 106 using the substrate 700. The position recovery member 500 may be configured to generate an attractive force of a predetermined size by interacting with the driving magnet 410. For example, the position recovery member 500 may be formed of a magnetic material. However, one or more embodiments may also include a position recovery member 500 formed of a material other than a magnetic material. For example, the position recovery member 500 may be formed of a mixture or a composite of a magnetic material and another material. The position recovery member 500 may have a predetermined size. For example, the total height Yh of the position recovery member 500 may be less than the total height Mh of the driving magnet 410. The center Yc of the position recovery member 500 may be arranged to be substantially consistent with the winding center Wc of the driving coil 420. However, one or more embodiments also include that the center Yc of the position recovery member 500 is not arranged to be consistent with the winding center Wc of the driving coil 420. For example, the center Yc of the position restoration member 500 may be disposed to be offset in the direction of the optical axis C from the winding center Wc of the driving coil 420 .

[0060] The substrate 700 may be electrically connected to the drive unit 400. For example, the substrate 700 may be electrically connected to the drive coil 420 of the drive unit 400. The substrate 700 may include a configuration for directly or indirectly controlling the drive unit 400. For example, the substrate 700 may include a circuit or an electronic component for changing, controlling, or transmitting the amount of current provided to the drive coil 420 or the direction of the current provided. The substrate 700 may be configured in a form that can be bent and deformed. For example, the substrate 700 may be configured in the form of an FPCB.

[0061] For example, Figure 3 As shown, the lens barrel 200 may be moved in the direction of the optical axis C as described above. For example, the lens barrel 200 may be moved by a predetermined maximum or total displacement AFL by the driving force of the driving magnet 410 and the driving coil 420 .

[0062] The position recovery member 500 may be configured to partially limit the movement of the lens barrel 200. For example, the position recovery member 500 may be configured to reduce the phenomenon that the lens barrel 200 moves the displacement AFL or more due to an external impact, or the lens barrel 200 shakes regularly or irregularly due to an external impact. For example, the position recovery member 500 may be used to suppress the movement of the lens barrel 200 by interaction (attractive force) with the drive magnet 410 fixed to the lens barrel 200, or gradually reduce the width of the movement. The attractive force generated between the position recovery member 500 and the drive magnet 410 is less than the attractive force generated between the drive magnet 410 and the drive coil 420 in the driving state of the lens barrel 200, and may be greater than the attractive force generated between the drive magnet 410 and the drive coil 420 in the non-driving state of the lens barrel 200. The position recovery member 500 may form a predetermined size relationship with the displacement AFL of the lens barrel 200 and the drive magnet 410. For example, the total height Yh of the position recovery member 500 may be smaller than the size (Mh-AFL / 2) obtained by subtracting 1 / 2 of the displacement AFL from the total height Mh of the driving magnet 410. In addition, the total height Yh of the position recovery member 500 may be smaller than the total height Mh of the driving magnet 410. The position recovery member 500 may be arranged to always face an area of ​​the driving magnet 410 having a relatively large size. For example, the position recovery member 500 may be arranged to always face an area of ​​1 / 2 or more of the driving magnet 410.

[0063] In addition, the position recovery component 500 may satisfy the following relational expression:

[0064] Yh / 2 <Mh-AFL / 2

[0065] In detail, the height (Yh / 2) from the center of the position restoration member 500 to one end (upper end or lower end) of the position restoration member 500 is less than the dimension provided by excluding the displacement of the lens barrel 200 in one direction (half of the total displacement AFL) from the height Mh of the driving magnet 410.

[0066] The camera module 10 configured as described above can reduce or suppress the shaking of the lens barrel 200 due to external impact. For example, when the lens barrel 200 moves upward or vibrates due to external impact, the position recovery member 500 can pull the lens barrel 200 downward by interacting (attractive force) with the driving magnet 410. On the contrary, when the lens barrel 200 moves downward or vibrates due to external impact, the position recovery member 500 can lift the lens barrel 200 upward by interacting (attractive force) with the driving magnet 410.

[0067] Therefore, the camera module according to one or more embodiments may reduce noise due to rapid movement or vibration of the lens barrel 200 and reduce sudden movement or vibration of the lens barrel 200 due to external impact.

[0068] Figure 4 is an exploded perspective view of an exemplary camera module according to one or more embodiments. Figure 5 is a perspective view of an exemplary camera module according to one or more embodiments. Figure 6 is a cross-sectional view of an exemplary camera module according to one or more embodiments.

[0069] For example, Figures 4 to 6 As shown, the camera module 12 according to one or more embodiments includes a housing 100, a lens barrel 200, drive units 402 and 404, position recovery members 510 and 520, and a substrate 700. However, the configuration of the camera module 12 is not limited to the above configuration. For example, the camera module 12 may further include a ball bearing 600 and an image sensor.

[0070] The housing 100 may be configured to have a polyhedron shape with a substantially quadrilateral cross section and a predetermined height. However, the shape of the housing 100 is not limited to a polyhedron shape with a quadrilateral cross section. The housing 100 is configured to accommodate the lens barrel 200. For example, a space capable of accommodating at least a portion of the lens barrel 200 may be formed inside the housing 100. The housing 100 is configured to allow the lens barrel 200 to move in the optical axis (C) direction. For example, the upper and lower surfaces of the housing 100 may be open. The housing 100 may be configured to be able to set the drive units 402 and 404. For example, openings 106 and 108 may be formed on one side of the housing 100, respectively, so that different components of the drive units 402 and 404 may be arranged to directly face each other.

[0071] The lens barrel 200 includes one or more lenses. For example, the lens barrel 200 may include four or more lenses. However, the number of lenses accommodated in the lens barrel 200 is not limited to four. For example, the lens barrel 200 may be configured to accommodate 3 or less or 5 or more lenses. The lens barrel 200 is configured to be accommodated in the housing 100. For example, the cross-sectional dimension of the lens barrel 200 may be smaller than the inner cross-sectional dimension of the housing 100. The lens barrel 200 may move in the direction of the optical axis C. For example, the lens barrel 200 may be accommodated in the housing 100 while being moved in the direction of the optical axis C by the driving force of the driving units 402 and 404.

[0072] The driving units 402 and 404 may provide a driving force required to drive the lens barrel 200. For example, the driving units 402 and 404 may drive the lens barrel 200 in the direction of the optical axis C by magnetic force. The driving units 402 and 404 may include driving magnets 410 and 412 and driving coils 420 and 422. The driving magnets 410 and 412 may be disposed on the lens barrel 200. For example, the driving magnets 410 and 412 may be disposed on multiple sides of the lens barrel 200. The driving magnets 410 and 412 may be disposed to substantially face the driving coils 420 and 422. For example, the driving magnets 410 and 412 and the driving coils 420 and 422 may be disposed to face each other through the openings 106 and 108 of the housing 100. The driving coils 420 and 422 may be disposed in the openings 106 and 108 of the housing 100, respectively. For example, the drive coils 420 and 422 can be set in the openings 106 and 108, respectively, using the plate 700 surrounding the openings 106 and 108 of the housing 100. The first drive magnet 410 and the second drive magnet 412 can have different sizes. For example, the total length ML1 of the first drive magnet 410 can be greater than the total length ML2 of the second drive magnet 412. As another example, the length ML2 of the second drive magnet 412 can be approximately 0.3 to 0.7 of the length ML1 of the first drive magnet 410. For reference, the first drive coil 420 and the second drive coil 422 can also have a dimensional relationship that is the same as or similar to the dimensional relationship of the first drive magnet 410 and the second drive magnet 412.

[0073] The position recovery members 510 and 520 may be arranged to directly or indirectly face the drive magnets 410 and 412 of the drive units 402 and 404. For example, the position recovery members 510 and 520 may be arranged outside the openings 106 and 108 using the substrate 700. The position recovery members 510 and 520 may be configured to generate a predetermined size of attraction by interacting with the drive magnets 410 and 412. For example, the position recovery members 510 and 520 may be formed of a magnetic material. However, one or more embodiments also include position recovery members 510 and 520 that are only partially formed of a magnetic material, that is, formed of a material other than a magnetic material. For example, the position recovery members 510 and 520 may be formed of a mixture or a composite of a magnetic material and another material. The position recovery members 510 and 520 may have a predetermined size. For example, the corresponding total heights Yh1 and Yh2 of the position recovery members 510 and 520 may be less than the corresponding total heights Mh1 and Mh2 of the corresponding drive magnets 410 and 412. For example, the height Yh1 of the first position restoration member 510 is smaller than the height Mh1 of the first drive magnet 410, and the height Yh2 of the second position restoration member 520 is smaller than the height Mh2 of the second drive magnet 412. The centers Yc1 and Yc2 of the position restoration members 510 and 520 may be arranged to substantially coincide with the winding centers Wc1 and Wc2 of the corresponding drive coils 420 and 422. For example, the center Yc1 of the first position restoration member 510 is arranged to coincide with the winding center Wc1 of the first drive coil 420, and the center Yc2 of the second position restoration member 520 is arranged to coincide with the winding center Wc2 of the second drive coil 422. However, one or more embodiments also include examples in which the centers Yc1 and Yc2 of the position restoration members 510 and 520 are not arranged to match the winding centers Wc1 and Wc2 of the corresponding drive coils 420 and 422. For example, the centers Yc1 and Yc2 of the position restoration members 510 and 520 may be disposed to be offset in the direction of the optical axis C from the winding centers Wc1 and Wc2 of the driving coils 420 and 422 .

[0074] The ball bearing 600 may be disposed between the housing 100 and the lens barrel 200. For example, the ball bearing 600 may be disposed between the guide groove 120 of the housing 100 and the guide groove 220 of the lens barrel 200. The ball bearing 600 is configured so that the lens barrel 200 can be driven smoothly. For example, the ball bearing 600 may be in point contact with the lens barrel 200 while preventing direct contact between the lens barrel 200 and the housing 100. Therefore, the lens barrel 200 may be moved smoothly in the direction of the optical axis C while in point contact with the ball bearing 600. The ball bearing 600 may be configured in plurality. For example, three ball bearings 600 may be sequentially disposed between the guide groove 120 of the housing 100 and the guide groove 220 of the lens barrel 200. However, the number of the ball bearings 600 is not limited to three. For example, two or four ball bearings 600 may be disposed between the guide groove 120 of the housing 100 and the guide groove 220 of the lens barrel 200 .

[0075] The substrate 700 may be electrically connected to the drive units 402 and 404. For example, the substrate 700 may be electrically connected to the drive coils 420 and 422 of the drive units 402 and 404. The substrate 700 may include components for directly or indirectly controlling the drive units 402 and 404. For example, the substrate 700 may include circuits or electronic components for changing, controlling, or transmitting the amount of current provided to the drive coils 420 and 422 or the direction of the current provided. The substrate 700 may be configured in a form that can be bent and deformed. For example, the substrate 700 may be configured in the form of an FPCB.

[0076] In addition, if Figure 6 As shown, the lens barrel 200 may be moved in the direction of the optical axis C as described above. For example, the lens barrel 200 may be moved by a predetermined maximum or total displacement AFL through the driving forces of the driving magnets 410 and 412 and the driving coils 420 and 422 .

[0077] The position recovery members 510 and 520 may be configured to partially limit the movement of the lens barrel 200. For example, the position recovery members 510 and 520 may be configured to reduce the phenomenon that the lens barrel 200 moves by a displacement of AFL or more due to an external impact or that the lens barrel 200 shakes regularly or irregularly due to an external impact. For example, the position recovery members 510 and 520 may be used to suppress the movement of the lens barrel 200 by interaction (attractive force) with the drive magnets 410 and 412 fixed to the lens barrel 200, or gradually reduce the width of the movement. The attractive force generated between the position recovery members 510 and 520 and the drive magnets 410 and 412 is less than the attractive force generated between the drive magnets 410 and 412 and the drive coils 420 and 422 in the driving state of the lens barrel 200, and may be greater than the attractive force generated between the drive magnets 410 and 412 and the drive coils 420 and 422 in the non-driving state of the lens barrel 200. The position recovery members 510 and 520 may form a predetermined dimensional relationship with the lens barrel 200 and the displacement AFL of the drive magnets 410 and 412. For example, the total height Yh1 of the first position recovery member 510 may be less than the total height Mh1 of the first drive magnet 410 and the sum of half of the displacement AFL (Mh1+AFL / 2), and the total height Yh2 of the second position recovery member 520 may be less than the total height Mh2 of the second drive magnet 412 and the sum of half of the displacement AFL (Mh2+AFL / 2). In addition, the total heights Yh1 and Yh2 of the position recovery members 510 and 520 may be respectively less than the total heights Mh1 and Mh2 of the drive magnets 410 and 412 facing each other.

[0078] The camera module 12 configured as described above can reduce or suppress the shaking of the lens barrel 200 due to external impact. For example, when the lens barrel 200 moves upward or vibrates due to external impact, the position recovery members 510 and 520 can interact with the driving magnets 410 and 412 to pull the lens barrel 200 downward by attraction. On the contrary, when the lens barrel 200 moves downward or vibrates due to external impact, the position recovery members 510 and 520 pull the lens barrel 200 upward by interaction (attraction) with the driving magnets 410 and 412. Therefore, the camera module according to one or more embodiments can not only reduce the sudden movement or vibration of the lens barrel 200 due to external impact, but also reduce the noise caused by the sudden movement or vibration of the lens barrel 200.

[0079] In addition, the camera module according to one or more embodiments can ensure the horizontal stability of the lens barrel 200. For example, the driving magnets 410 and 412 provided on one side and the other side of the lens barrel 200 can reduce the phenomenon that the lens barrel 200 shakes or tilts in a direction tilted relative to the optical axis C. Therefore, the camera module according to one or more embodiments can improve the reliability of the movement of the lens barrel 200 in the direction of the optical axis C.

[0080] Figure 7 is an exploded perspective view of an exemplary camera module according to one or more embodiments. Figure 8 is a perspective view of an exemplary camera module according to one or more embodiments. Fig. 9 is a cross-sectional view of an exemplary camera module according to one or more embodiments.

[0081] For example, Figures 7 to 9 As shown, the camera module 14 according to one or more embodiments includes a housing 100, a lens barrel 200, a barrel bracket 300, drive units 402 and 404, position recovery members 510 and 520, and a substrate 700. However, the configuration of the camera module 14 is not limited to the above configuration. For example, the camera module 14 may also include a ball bearing 600, yoke members 512 and 522, a shielding cover 900, and an image sensor.

[0082] The housing 100 may be configured to have a polyhedron shape with a substantially quadrilateral cross section and a predetermined height. However, the shape of the housing 100 is not limited to a polyhedron shape with a quadrilateral cross section. The housing 100 is configured to accommodate the lens barrel 200. For example, a space capable of accommodating at least a portion of the lens barrel 200 may be formed inside the housing 100. The housing 100 is configured to allow the lens barrel 200 to move in the optical axis C direction. For example, the upper surface and the lower surface of the housing 100 may be open. The housing 100 may be configured to be able to set the drive units 402 and 404. For example, the openings 106 and 108 may be respectively formed on one side of the housing 100 so that the different components of the drive units 402 and 404 may be arranged to directly face each other.

[0083] The lens barrel 200 may be formed in a generally cylindrical shape. However, the shape of the lens barrel 200 is not limited to a cylindrical shape. The lens barrel 200 includes one or more lenses. For example, the lens barrel 200 may include four or more lenses. However, the number of lenses accommodated in the lens barrel 200 is not limited to four. For example, the lens barrel 200 may be configured to accommodate 3 or less or 5 or more lenses. The lens barrel 200 is configured to be accommodated in the housing 100. For example, the cross-sectional dimensions of the lens barrel 200 may be smaller than the inner cross-sectional dimensions of the housing 100. The lens barrel 200 may move in the direction of the optical axis C. For example, the lens barrel 200 may be moved in the direction of the optical axis C by the driving force of the driving units 402 and 404 while being accommodated in the housing 100.

[0084] The barrel holder 300 may be coupled to the lens barrel 200. The barrel holder 300 may support the lens barrel 200 so that the lens barrel 200 may stably move in the internal space of the housing 100. The lens barrel 200 may be formed in a shape substantially similar to the internal space of the barrel holder 300. For example, the cross-sectional shape of the lens barrel 200 may have a circular shape that is the same as or similar to the shape of the internal space of the barrel holder 300. The barrel holder 300 may provide a space for supporting some components of the drive units 402 and 404. For example, mounting grooves 312 and 314 in which the drive magnets 410 and 412 are to be disposed may be formed in the side of the barrel holder 300.

[0085] The driving units 402 and 404 can provide the driving force required to drive the lens barrel 200. For example, the driving units 402 and 404 can drive the lens barrel 200 in the direction of the optical axis C by magnetic force. The driving units 402 and 404 may include a first driving unit 402 and a second driving unit 404, the first driving unit 402 is configured to provide a driving force to one side of the lens barrel 200 and the barrel holder 300, and the second driving unit 404 is configured to provide a driving force to the other side of the lens barrel 200 and the barrel holder 300. The driving units 402 and 404 may include driving magnets 410 and 412 and driving coils 420 and 422. The driving magnets 410 and 412 may be disposed on the barrel holder 300. For example, the driving magnets 410 and 412 may be disposed in the mounting grooves 312 and 314 of the barrel holder 300, respectively. The driving magnets 410 and 412 may be disposed to substantially face the driving coils 420 and 422. For example, the drive magnets 410 and 412 and the drive coils 420 and 422 can be arranged to face each other through the openings 106 and 108 of the housing 100. The drive coils 420 and 422 can be respectively arranged in the openings 106 and 108 of the housing 100. For example, the drive coils 420 and 422 can be arranged in the openings 106 and 108 using a substrate 700 surrounding the openings 106 and 106 of the housing 100. The first drive magnet 410 and the second drive magnet 412 can have different sizes. For example, the total length ML1 of the first drive magnet 410 can be greater than the total length ML2 of the second drive magnet 412. As another example, the total length ML2 of the second drive magnet 412 can be approximately 0.3 to 0.7 of the total length ML1 of the first drive magnet 410.

[0086] As another example, the total length ML1 of the first driving magnet 410 and the total length ML2 of the second driving magnet 412 may satisfy the following relationship:

[0087] 0.3≤(ML1 / G1) / (ML2 / G2)≤0.7

[0088] For reference, G1 is the shortest distance between the first drive magnet 410 and the first position restoration member 510, G2 is the shortest distance between the second drive magnet 412 and the second position restoration member 520, and the first drive coil 420 and the second drive coil 422 may also have a dimensional relationship that is the same as or similar to the dimensional relationship between the first drive magnet 410 and the second drive magnet 412.

[0089] The position recovery members 510 and 520 may be arranged to directly or indirectly face the drive magnets 410 and 412 of the drive units 402 and 404. For example, the position recovery members 510 and 520 may be arranged outside the openings 106 and 108 using the substrate 700. The position recovery members 510 and 520 may be configured to generate an attractive force of a predetermined size by interacting with the drive magnets 410 and 412. For example, the position recovery member 500 may be formed of a magnetic material. However, one or more exemplary embodiments also include position recovery members 510 and 520 formed of materials other than magnetic materials. For example, the position recovery members 510 and 520 may be formed of a mixture or composite of a magnetic material and another material. The position recovery members 510 and 520 may have a predetermined size. For example, the total heights Yh1 and Yh2 of the position recovery members 510 and 520 may be less than the total heights Mh1 and Mh2 of the corresponding drive magnets 410 and 412, respectively. For example, the total height Yh1 of the first position restoration member 510 is less than the total height Mh1 of the first drive magnet 410, and the total height Yh2 of the second position restoration member 520 is less than the total height Mh2 of the second drive magnet 412. The centers Yc1 and Yc2 of the position restoration members 510 and 520 may be arranged to substantially coincide with the winding centers Wc1 and Wc2 of the corresponding drive coils 420 and 422. For example, the center Yc1 of the first position restoration member 510 is arranged to coincide with the winding center Wc1 of the first drive coil 420, and the center Yc2 of the second position restoration member 520 is arranged to coincide with the winding center Wc2 of the second drive coil 422. However, one or more embodiments also include that the centers Yc1 and Yc2 of the position restoration members 510 and 520 are not arranged to match the winding centers Wc1 and Wc2 of the corresponding drive coils 420 and 422. For example, the centers Yc1 and Yc2 of the position restoration members 510 and 520 may be disposed to be offset in the direction of the optical axis C from the winding centers Wc1 and Wc2 of the driving coils 420 and 422 .

[0090] Ball bearings 610 and 620 may be disposed between the housing 100 and the lens barrel holder 300. For example, ball bearings 610 and 620 may be disposed between the guide grooves 122 and 124 of the housing 100 and the guide grooves 322 and 324 of the lens barrel holder 300. Ball bearings 610 and 620 are configured to enable the lens barrel 200 to be driven smoothly. For example, ball bearings 610 and 620 may be in point contact with the lens barrel holder 300 in a state where the direct contact between the lens barrel holder 300 and the housing 100 is blocked. Therefore, the lens barrel 200 may be moved smoothly in point contact with ball bearings 610 and 620 along the lens barrel holder 300 in the direction of the optical axis C. Ball bearings 610 and 620 may be configured in plurality. For example, two pairs of ball bearings 610 and 620 may be sequentially arranged between the guide grooves 122 and 124 of the housing 100 and the guide grooves 322 and 324 of the barrel support 300. However, the number of ball bearings 610 and 620 is not limited to two pairs. For example, three or more pairs of ball bearings 610 and 620 may be arranged between the guide grooves 122 and 124 of the housing 100 and the guide grooves 322 and 324 of the barrel support 300. Ball bearings 610 and 620 may be arranged to stably support the lens barrel 200 and the barrel support 300. For example, ball bearings 610 and 620 may be arranged at the diagonal portions of the housing 100 and the barrel support 300, respectively.

[0091] The substrate 700 may be arranged to surround the openings 106 and 108 of the housing 100. The substrate 700 may be electrically connected to the drive units 402 and 404. For example, the substrate 700 may be electrically connected to the drive coils 420 and 422 of the drive units 402 and 404. The substrate 700 may include components for directly or indirectly controlling the drive units 402 and 404. For example, the substrate 700 may include circuits or electronic components for changing, controlling or transmitting the amount of current provided to the drive coils 420 and 422 or the direction of the current provided. The substrate 700 may be configured in a form that can be bent and deformed. For example, the substrate 700 may be configured in the form of an FPCB.

[0092] The shielding cover 900 may be configured to protect the main components of the camera module 14 from external electromagnetic waves. For example, the shielding cover 900 may be formed of a metal material to prevent electromagnetic waves from penetrating into the camera module 14.

[0093] The camera module 14 may further include yoke members 512 and 522. The yoke members 512 and 522 may be disposed on the barrel bracket 300. The yoke members 512 and 522 may be disposed at a position overlapping with the drive magnets 410 and 412. For example, the first yoke member 512 may be disposed in the mounting groove 312, and the second yoke member 514 may be disposed in the mounting groove 314. The yoke members 512 and 522 may increase the magnetic force of the drive magnets 410 and 412. For example, the yoke members 512 and 522 may increase the magnetic force generated between the drive magnets 410 and 412 and the drive coils 420 and 422, or may increase the attractive force generated between the drive magnets 410 and 412 and the position recovery members 510 and 520.

[0094] In addition, if Fig. 9 As shown, the lens barrel 200 and the barrel holder 300 can move in the direction of the optical axis C. For example, the lens barrel 200 and the barrel holder 300 can move up or down by a predetermined amplitude (AFL / 2) by the driving force of the driving magnets 410 and 412 and the driving coils 420 and 422. For reference, AFL is the maximum or total displacement of the lens barrel 200.

[0095] The position recovery members 510 and 520 may be configured to partially limit the movement of the lens barrel 200. For example, the position recovery members 510 and 520 may be configured to reduce the phenomenon that the lens barrel 200 moves by a displacement of AFL or more due to an external impact or that the lens barrel 200 shakes regularly or irregularly due to an external impact. For example, the position recovery members 510 and 520 may suppress the movement of the lens barrel 200 and the lens barrel holder 300 or gradually reduce the width of the movement by interacting (attractive force) with the driving magnets 410 and 412 fixed to the lens barrel holder 300. The attractive force generated between the position recovery members 510 and 520 and the driving magnets 410 and 412 may be less than the attractive force generated between the driving magnets 410 and 412 and the driving coils 420 and 422 in the driving state of the lens barrel 200, and may be greater than the attractive force generated between the driving magnets 410 and 412 and the driving coils 420 and 422 in the non-driving state of the lens barrel 200. The position recovery members 510 and 520 may form a predetermined dimensional relationship with the lens barrel 200 and the displacement AFL of the drive magnets 410 and 412. For example, the total height Yh1 of the first position recovery member 510 may be less than the sum of the total height Mh1 of the first drive magnet 410 and half of the displacement AFL (Mh1+AFL / 2), and the total height Yh2 of the second position recovery member 520 may be less than the sum of the total height Mh2 of the second drive magnet 412 and half of the displacement AFL (Mh2+AFL / 2). In addition, the total heights Yh1 and Yh2 of the position recovery members 510 and 520 may be respectively less than the total heights Mh1 and Mh2 of the drive magnets 410 and 412 facing each other.

[0096] The camera module 14 configured as described above can reduce or suppress the shaking of the lens barrel 200 and the barrel bracket 300 due to external impact. For example, when the lens barrel 200 and the barrel bracket 300 move upward or vibrate due to external impact, the position recovery members 510 and 520 interact with the driving magnets 410 and 412, and can pull the lens barrel 200 and the barrel bracket 300 downward by the generated attraction. On the contrary, when the lens barrel 200 and the barrel bracket 300 move downward or vibrate due to external impact, the position recovery members 510 and 520 can interact with the driving magnets 410 and 412, and can pull the lens barrel 200 and the barrel bracket 300 upward by the generated attraction. Therefore, the camera module according to one or more embodiments can reduce the sudden movement or vibration of the lens barrel 200 and the barrel bracket 300 due to external impact, and the lens barrel 200 and the barrel bracket 300 can also reduce the noise caused by the sudden movement or vibration.

[0097] In addition, the camera module according to one or more embodiments can ensure the horizontal stability of the lens barrel 200 and the barrel support 300. For example, the driving magnets 410 and 412 arranged on one side and the other side of the lens barrel 200 can alleviate the phenomenon that the lens barrel 200 and the barrel support 300 shake or tilt in the direction inclined to the optical axis C. In addition, the ball bearings 610 and 620 arranged at the diagonal position of the housing 100 can enable the lens barrel 200 and the barrel support 300 to be stably driven in the optical axis direction. Therefore, the camera module according to one or more embodiments can improve the reliability of the movement of the lens barrel 200 and the barrel support 300 in the optical axis direction.

[0098] Fig.10 is an exploded perspective view of an example camera module according to one or more embodiments. Fig.11 is a combined perspective view of an exemplary camera module according to one or more embodiments. Fig.12 is a cross-sectional view of an exemplary camera module according to one or more embodiments.

[0099] For example, Figures 10 to 12 As shown, the camera module 16 according to one or more embodiments includes a housing 100, a lens barrel 200, a barrel bracket 300, drive units 402 and 404, position recovery members 510 and 520, and a substrate 700. However, the configuration of the camera module 16 is not limited to the above configuration. For example, the camera module 16 may also include a ball bearing 600, a clamping member 800, a shielding cover 900, and an image sensor.

[0100] The housing 100 may be configured to have a polyhedron shape with a substantially quadrilateral cross section and a predetermined height. However, the shape of the housing 100 is not limited to a polyhedron shape with a quadrilateral cross section. The housing 100 is configured to accommodate the lens barrel 200. For example, a space capable of accommodating at least a portion of the lens barrel 200 may be formed inside the housing 100. The housing 100 is configured to allow the lens barrel 200 to move in the optical axis C direction. For example, the upper and lower surfaces of the housing 100 may be open. The housing 100 may be configured to enable the drive units 402 and 404 to be set. For example, openings 106 and 108 may be formed on one side of the housing 100, respectively, so that different components of the drive units 402 and 404 may be arranged to directly face each other.

[0101] The lens barrel 200 may be formed to have a substantially cylindrical shape. However, the shape of the lens barrel 200 is not limited to a cylindrical shape. The lens barrel 200 includes one or more lenses. For example, the lens barrel 200 may include four or more lenses. However, the number of lenses accommodated in the lens barrel 200 is not limited to four. For example, the lens barrel 200 may be configured to accommodate 3 or less or 5 or more lenses. The lens barrel 200 is configured to be accommodated in the housing 100. For example, the cross-sectional dimension of the lens barrel 200 may be smaller than the inner cross-sectional dimension of the housing 100. The lens barrel 200 may move in the direction of the optical axis C. For example, the lens barrel 200 may be accommodated in the housing 100 while being moved in the direction of the optical axis C by the driving force of the driving units 402 and 404.

[0102] The barrel holder 300 may be connected to the lens barrel 200. The barrel holder 300 may support the lens barrel 200 so that the lens barrel 200 may stably move in the internal space of the housing 100. The lens barrel 200 may be formed in a shape substantially similar to the internal space of the barrel holder 300. For example, the cross-sectional shape of the lens barrel 200 may have a circular shape that is the same as or similar to the internal space of the barrel holder 300. The barrel holder 300 may provide a space for supporting some components of the drive units 402 and 404. For example, mounting grooves 312 and 314 in which the drive magnets 410 and 412 are to be disposed may be formed in the side of the barrel holder 300.

[0103] The driving units 402 and 404 can provide the driving force required to drive the lens barrel 200. For example, the driving units 402 and 404 can drive the lens barrel 200 in the direction of the optical axis C by magnetic force. The driving units 402 and 404 may include a first driving unit 402 and a second driving unit 404, the first driving unit 402 is configured to provide a driving force to one side of the lens barrel 200 and the barrel holder 300, and the second driving unit 404 is configured to provide a driving force to the other side of the lens barrel 200 and the barrel holder 300. The driving units 402 and 404 may include driving magnets 410 and 412 and driving coils 420 and 422. The driving magnets 410 and 412 may be disposed on the barrel holder 300. For example, the driving magnets 410 and 412 may be disposed in the mounting grooves 312 and 314 of the barrel holder 300, respectively. The driving magnets 410 and 412 may be disposed to substantially face the driving coils 420 and 422. For example, the drive magnets 410 and 412 and the drive coils 420 and 422 can be arranged to face each other through the openings 106 and 108 of the housing 100. The drive coils 420 and 422 can be respectively arranged in the openings 106 and 108 of the housing 100. For example, the drive coils 420 and 422 can be respectively arranged in the openings 106 and 108 using a substrate 700 surrounding the openings 106 and 106 of the housing 100. The first drive magnet 410 and the second drive magnet 412 can have different sizes. For example, the total length ML1 of the first drive magnet 410 can be greater than the total length ML2 of the second drive magnet 412. As another example, the total length ML2 of the second drive magnet 412 can be approximately 0.3 to 0.7 of the total length ML1 of the first drive magnet 410.

[0104] As another example, the total length ML1 of the first driving magnet 410 and the total length ML2 of the second driving magnet 412 may satisfy the following relationship:

[0105] 0.3≤(ML1 / G1) / (ML2 / G2)≤0.7

[0106] For reference, G1 is the shortest distance between the first drive magnet 410 and the first position restoration member 510, G2 is the shortest distance between the second drive magnet 412 and the second position restoration member 520, and the first drive coil 420 and the second drive coil 422 may also have a dimensional relationship that is the same as or similar to the dimensional relationship between the first drive magnet 410 and the second drive magnet 412.

[0107] The position recovery members 510 and 520 may be arranged to directly or indirectly face the drive magnets 410 and 412 of the drive units 402 and 404. For example, the position recovery members 510 and 520 may be arranged outside the openings 106 and 108 using the substrate 700. The position recovery members 510 and 520 may be configured to generate an attractive force of a predetermined size by interacting with the drive magnets 410 and 412. For example, the position recovery member 500 may be formed of a magnetic material. However, one or more embodiments also include position recovery members 510 and 520 formed of materials other than magnetic materials. For example, the position recovery members 510 and 520 may be formed of a mixture or a composite of a magnetic material and another material. The position recovery members 510 and 520 may have a predetermined size. For example, the total heights Yh1 and Yh2 of the position recovery members 510 and 520 may be respectively less than the total heights Mh1 and Mh2 of the corresponding drive magnets 410 and 412. For example, the total height Yh1 of the first position restoration member 510 is less than the total height Mh1 of the first drive magnet 410, and the total height Yh2 of the second position restoration member 520 is less than the total height Mh2 of the second drive magnet 412. The centers Yc1 and Yc2 of the position restoration members 510 and 520 may be arranged to substantially coincide with the winding centers Wc1 and Wc2 of the corresponding drive coils 420 and 422. For example, the center Yc1 of the first position restoration member 510 is arranged to coincide with the winding center Wc1 of the first drive coil 420, and the center Yc2 of the second position restoration member 520 is arranged to coincide with the winding center Wc2 of the second drive coil 422. However, one or more embodiments also include that the centers Yc1 and Yc2 of the position restoration members 510 and 520 are not arranged to match the winding centers Wc1 and Wc2 of the corresponding drive coils 420 and 422. For example, the centers Yc1 and Yc2 of the position restoration members 510 and 520 may be disposed to be offset in the direction of the optical axis C from the winding centers Wc1 and Wc2 of the driving coils 420 and 422 .

[0108] Ball bearings 610 and 620 may be disposed between the housing 100 and the barrel holder 300. For example, the ball bearings 610 and 620 may be disposed between guide grooves 122 and 124 formed in one surface of the housing 100 and guide grooves 322 and 324 formed in one surface of the barrel holder 300. The ball bearings 610 and 620 are configured to enable the lens barrel 200 to be driven smoothly. For example, the ball bearings 610 and 620 may be in point contact with the barrel holder 300 in a state where direct contact between the barrel holder 300 and the housing 100 is blocked. Therefore, the lens barrel 200 may be moved smoothly in point contact with the ball bearings 610 and 620 along the barrel holder 300 in the direction of the optical axis C. The ball bearings 610 and 620 may be configured in plurality. For example, two ball bearings 610 and two ball bearings 620 may be sequentially disposed between the guide grooves 122 and 124 of the housing 100 and the guide grooves 322 and 324 of the barrel holder 300. However, the number of the ball bearings 610 and 620 is not limited thereto. For example, three or more pairs of ball bearings 610 and 620 may be disposed between the guide grooves 122 and 124 of the housing 100 and the guide grooves 322 and 324 of the barrel holder 300.

[0109] The substrate 700 may be arranged to surround the openings 106 and 108 of the housing 100. The substrate 700 may be electrically connected to the drive units 402 and 404. For example, the substrate 700 may be electrically connected to the drive coils 420 and 422 of the drive units 402 and 404. The substrate 700 may include components for directly or indirectly controlling the drive units 402 and 404. For example, the substrate 700 may include circuits or electronic components for changing, controlling or transmitting the amount of current provided to the drive coils 420 and 422 or the direction of the current provided. The substrate 700 may be configured in a form that can be bent and deformed. For example, the substrate 700 may be configured in the form of an FPCB. The substrate 700 may be formed to surround the side surface of the housing 100. For example, the substrate 700 according to one or more embodiments may be formed to surround all four sides of the housing 100.

[0110] The clamp member 800 is configured to be coupled to the lens barrel bracket 300. For example, the clamp member 800 may be coupled to the lens barrel bracket 300 by a protrusion and groove structure. For reference, Fig.10It is shown that a projection is formed on the lens barrel support 300 and a coupling groove is formed in the clamping member 800, but a coupling groove may also be formed in the lens barrel support 300 and a projection may also be formed on the clamping member 800. A buffer member 820 may be formed on the clamping member 800. The buffer member 820 may be formed by a material capable of elastic deformation. For example, the buffer member 820 may be formed by polyurethane foam, epoxy resin, natural rubber, synthetic rubber, etc. The buffer member 820 may reduce the collision energy between the lens barrel support 300 and the shielding cover 900. For example, the buffer member 820 may absorb or reduce the energy generated during the collision between the lens barrel support 300 and the shielding cover 900 by elastic deformation.

[0111] The shielding cover 900 may be configured to protect the main components of the camera module 16 from external electromagnetic waves. For example, the shielding cover 900 may be formed of a metal material to prevent electromagnetic waves from penetrating into the camera module 16.

[0112] In addition, if Fig.12 As shown, the lens barrel 200 and the barrel holder 300 can move in the direction of the optical axis C. For example, the lens barrel 200 and the barrel holder 300 can move up or down by a predetermined amplitude (AFL / 2) by the driving force of the driving magnets 410 and 412 and the driving coils 420 and 422. For reference, AFL is the maximum displacement of the lens barrel 200.

[0113] The position recovery members 510 and 520 may be configured to partially limit the movement of the lens barrel 200. For example, the position recovery members 510 and 520 may be configured to reduce the phenomenon that the lens barrel 200 moves by a displacement of AFL or more due to an external impact or that the lens barrel 200 shakes regularly or irregularly due to an external impact. For example, the position recovery members 510 and 520 may be used to suppress the movement of the lens barrel 200 and the lens barrel holder 300 or gradually reduce the width of the movement by interacting (attractive force) with the driving magnets 410 and 412 fixed to the lens barrel holder 300. The attractive force generated between the position recovery members 510 and 520 and the driving magnets 410 and 412 may be less than the attractive force generated between the driving magnets 410 and 412 and the driving coils 420 and 422 in the driving state of the lens barrel 200, and may be greater than the attractive force generated between the driving magnets 410 and 412 and the driving coils 420 and 422 in the non-driving state of the lens barrel 200. The position recovery members 510 and 520 may form a predetermined dimensional relationship with the lens barrel 200 and the displacement AFL of the drive magnets 410 and 412. For example, the total height Yh1 of the first position recovery member 510 may be less than the total height Mh1 of the first drive magnet 410 and the sum of half of the displacement AFL (Mh1+AFL / 2), and the total height Yh2 of the second position recovery member 520 may be less than the total height Mh2 of the second drive magnet 412 and the sum of half of the displacement AFL (Mh2+AFL / 2). In addition, the total heights Yh1 and Yh2 of the position recovery members 510 and 520 may be respectively less than the total heights Mh1 and Mh2 of the drive magnets 410 and 412 facing each other.

[0114] The camera module 16 configured as described above can reduce or suppress the shaking of the lens barrel 200 and the barrel bracket 300 due to external impact. For example, when the lens barrel 200 and the barrel bracket 300 move upward or vibrate due to external impact, the position recovery members 510 and 520 can pull the lens barrel 200 and the barrel bracket 300 downward by interacting (attractive force) with the driving magnets 410 and 412. On the contrary, when the lens barrel 200 and the barrel bracket 300 move downward or vibrate due to external impact, the position recovery members 510 and 520 can pull the lens barrel 200 and the barrel bracket 300 upward by interacting (attractive force) with the driving magnets 410 and 412. Therefore, the camera module according to one or more embodiments can reduce the noise caused by the sudden movement or vibration of the lens barrel 200 and the barrel bracket 300, and reduce the rapid movement or vibration of the lens barrel 200 and the barrel bracket 300 due to external impact.

[0115] In addition, the camera module according to one or more embodiments can ensure the horizontal stability of the lens barrel 200 and the barrel support 300. For example, the driving magnets 410 and 412 arranged on one side and the other side of the lens barrel 200 can alleviate the phenomenon that the lens barrel 200 and the barrel support 300 shake or tilt in the direction tilted relative to the optical axis C. In addition, the ball bearings 610 and 620 arranged on the diagonal position of the housing 100 can enable the lens barrel 200 and the barrel support 300 to be stably driven in the optical axis direction. Therefore, the camera module according to one or more embodiments can improve the reliability of the movement of the lens barrel 200 and the barrel support 300 in the optical axis direction.

[0116] Therefore, as mentioned above Figures 1 to 12 As described, according to one or more embodiments, the shaking effect (e.g., due to external impact) of the lens barrel of one or more camera modules of the electronic device can be significantly reduced. As described above, in one or more examples, the electronic device is a mobile or portable electronic device, such as a mobile phone or a computer.

[0117] Although the present disclosure includes specific examples, it will be apparent after understanding the disclosure of the present application that various changes in form and detail may be made to these examples without departing from the spirit and scope of the claims and their equivalents. The examples described herein should be interpreted in a descriptive sense only, and not for limiting purposes. The description of the features or aspects in each example should be considered applicable to similar features or aspects in other examples. Suitable results may also be obtained if the described techniques are performed in a different order, and / or if the components in the described systems, architectures, devices, or circuits are replaced or supplemented in different ways and / or with other components or their equivalents. Therefore, the scope of the present disclosure is not limited by specific embodiments, but by the appended claims and their equivalents, and all variations within the scope of the appended claims and their equivalents should be understood to be included in the present disclosure.

Claims

1. A camera module, comprising: case; A lens barrel, disposed in the housing; a lens barrel driving unit, comprising a driving magnet and a driving coil, configured to drive the lens barrel along an optical axis direction; a position recovery member disposed to face the driving magnet; as well as Image sensor, Among them, the conditional expression Yh<(Mh-AFL / 2) is satisfied. Here, Yh is the total length of the position restoration member in the optical axis direction, Mh is the total length of the driving magnet in the optical axis direction, and AFL is the maximum displacement of the lens barrel in the optical axis direction.

2. The camera module according to claim 1, further comprising: One or more ball bearings are disposed between the lens barrel and the housing.

3. The camera module according to claim 1, wherein: The lens barrel driving unit comprises: a first driving magnet and a first driving coil configured to provide a driving force to one side of the lens barrel; and The second driving magnet and the second driving coil are configured to provide another driving force to the other side of the lens barrel.

4. The camera module according to claim 3, wherein: The first drive magnet is configured to have an overall length that is different from an overall length of the second drive magnet.

5. The camera module according to claim 4, wherein: A ratio between a total length of the first drive magnet and a total length of the second drive magnet is 0.3 to 0.

7.

6. The camera module according to claim 3, in, The position recovery member is disposed to face the first driving magnet, and The camera module further includes another position restoring member, and the another position restoring member is arranged to face the second driving magnet.

7. The camera module according to claim 6, wherein: Another conditional expression Yh2<(Mh2-AFL / 2) is satisfied, Here, Yh2 is the total length of the other position restoration member in the optical axis direction, and Mh2 is the total length of the second driving magnet in the optical axis direction.

8. The camera module according to claim 1, wherein: The total length of the position restoration member in the optical axis direction is smaller than the total length of the driving magnet in the optical axis direction.

9. A camera module, comprising: case; A lens barrel configured to be movable in the direction of the optical axis; A lens barrel bracket, connected to the lens barrel and disposed in the housing; a lens barrel driving unit configured to drive the lens barrel in the optical axis direction and comprising a driving magnet and a driving coil; a position recovery member configured to face the drive magnet in a direction intersecting the optical axis; as well as Image sensor, wherein the total length of the position recovery member in the direction of the optical axis is smaller than the total length of the drive magnet in the direction of the optical axis to limit the displacement of the lens barrel in the direction of the optical axis, and Satisfy the conditional expression Yh<(Mh-AFL / 2), Here, Yh is the total length of the position restoration member in the optical axis direction, Mh is the total length of the driving magnet in the optical axis direction, and AFL is the maximum displacement of the lens barrel in the optical axis direction.

10. The camera module according to claim 9, wherein: The position restoration member applies a passive attractive force to the driving magnet to restrict displacement of the lens barrel in the optical axis direction.

11. The camera module according to claim 9, further comprising: One or more ball bearings are arranged between the guide groove of the housing and the guide groove of the lens barrel bracket.

12. The camera module according to claim 11, wherein: The one or more ball bearings include two or more ball bearings, and the two or more ball bearings are respectively disposed at diagonal portions of the housing and the barrel holder.

13. The camera module according to claim 11, wherein: The one or more ball bearings include two or more ball bearings, and the two or more ball bearings are disposed between one surface of the housing and one surface of the barrel holder.

14. The camera module according to claim 9, wherein: The lens barrel driving unit comprises: a first driving magnet and a first driving coil configured to provide a driving force to one side of the lens barrel; and The second driving magnet and the second driving coil are configured to provide another driving force to the other side of the lens barrel.

15. The camera module according to claim 14, wherein: The first drive magnet is configured to have an overall length that is different from an overall length of the second drive magnet.

16. The camera module according to claim 15, wherein: A ratio between a total length of the first drive magnet and a total length of the second drive magnet is 0.3 to 0.

7.

17. The camera module according to claim 14, in, The position recovery member is disposed to face the first driving magnet, and In which, the camera module also includes another position recovery component, which is arranged to face the second driving magnet, wherein Yh2 is the total length of the other position recovery component in the direction of the optical axis, Mh2 is the total length of the second driving magnet in the direction of the optical axis, and satisfies another conditional expression Yh2<(Mh2-AFL / 2).

18. The camera module according to claim 9, further comprising: A circuit board is disposed around the opening portion of the housing and is electrically connected to the driving coil.

19. The camera module according to claim 9, further comprising: A shield case is coupled to the housing and is configured to block external electromagnetic waves.

20. The camera module of claim 19, further comprising: A clamping member coupled to the lens barrel support; as well as The buffer member is arranged on the clamp member.

Images