Folding module and camera module including same

Abstract

The folding module includes: a housing; a rotating bracket supported on the housing together with the reflecting member so as to be rotatable about a first axis; a first ball group disposed between the housing and the rotation bracket and including one rotation shaft ball forming a first shaft and two guide balls spaced apart from the rotation shaft ball; and a first driving unit including a first driving magnet and a first driving coil, and configured to generate a driving force to rotate the rotating bracket about the first axis. The first driving magnet and the first driving coil are disposed in a space between the rotating shaft ball and the two guide balls so as to be closer to the two guide balls than the rotating shaft ball.

Description

[0001] Cross-reference to related applications

[0002] This application claims the benefit of priority to Korean Patent Application No. 10-2024-0012394, filed on January 26, 2024, with the Korean Intellectual Property Office, the entire disclosure of which is incorporated herein by reference for all purposes. Technical Field

[0003] This disclosure relates to a folding module and a camera module including the folding module. Background Technology

[0004] Camera modules installed in mobile devices can be manufactured to have performance comparable to that of conventional cameras. For example, mobile devices can use camera modules with all the features added, such as autofocus (AF), optical image stabilization (OIS), and zoom capabilities.

[0005] Camera modules in mobile devices can use reflectors to alter the path of incident light to achieve a desired total length (or total track length). This folded structure can increase the optical path without increasing or decreasing the overall length of the camera module, thus enabling high zoom magnification.

[0006] A camera module that includes a reflector can rotate the reflector during its optical image stabilization. However, the components that provide the driving force to the reflector and support its operation may be arranged around the reflector, which has a relatively small size, making it difficult to ensure sufficient driving force.

[0007] The above information is presented as background information and is intended to aid in understanding this disclosure. No determination or assertion is made as to whether any of the above content can be used as prior art with respect to this disclosure. Utility Model Content

[0008] This summary portion is provided to briefly introduce the selection of concepts, which will be further described in the detailed description portion below. This summary portion is not intended to identify key or essential features of the claimed subject matter, nor is it intended to help determine the scope of the claimed subject matter.

[0009] In one general aspect, a folding module includes a housing; a rotation support supporting a reflection member on the housing so as to be rotatable about a first axis; a first ball group disposed between the housing and the rotation support and including a rotation axis ball forming the first axis and two guide balls spaced apart from the rotation axis ball; and a first driving unit including a first driving magnet and a first driving coil and configured to generate a driving force to rotate the rotation support about the first axis. The first driving magnet and the first driving coil are disposed in a space between the rotation axis ball and the two guide balls to be closer to the two guide balls than to the rotation axis ball.

[0010] The first driving coil can include a first coil facing the first driving magnet and a second coil.

[0011] The first driving magnet can include a first magnet facing the first coil and including two polarity regions on a surface facing the first coil, and a second magnet facing the second coil and including three polarity regions on a surface facing the second coil.

[0012] The first driving unit can further include a first position sensor facing the second magnet.

[0013] The first driving magnet can include a third magnet facing the first coil and the second coil, and the third magnet can include four polarity regions on a surface facing the first coil and the second coil.

[0014] The third magnet can include a first polarity region, a second polarity region, a third polarity region, and a fourth polarity region sequentially disposed in a length direction of the third magnet. The first coil can face the first polarity region and the second polarity region, and the second coil can face the third polarity region and the fourth polarity region.

[0015] The first driving unit can further include a first position sensor facing the third magnet, and the first position sensor can be disposed between the first coil and the second coil.

[0016] The first driving magnet can be disposed on the rotation support, and the first driving coil can be disposed in the housing and face the first driving magnet. The folding module can further include a first yoke facing the first driving magnet while the first driving coil is interposed between the first yoke and the first driving magnet, and generating a magnetic attraction with the first driving magnet.

[0017] The folding module can further include a reflection support coupled with the reflection member and supported on the rotation support so as to be rotatable about a second axis perpendicular to the first axis; a second ball group disposed between the rotation support and the reflection support and forming the second axis; and a second driving unit including a second driving magnet and a second driving coil and configured to generate a driving force to rotate the reflection support about the second axis.

[0018] The second driving magnet can be disposed on the reflection bracket, and a second driving coil disposed on the housing can face the second driving magnet.

[0019] The folding module can further include a first magnetic material disposed on the reflection bracket, and a second magnetic material disposed on the rotation bracket and facing the first magnetic material. The first magnetic material and the second magnetic material can generate magnetic attraction therebetween.

[0020] In another general aspect, a camera module includes a housing, one or more lens modules disposed in the housing and including at least one lens, and a folding module disposed in the housing. The folding module includes a rotation bracket supported on the housing with a reflection member configured to change an incident light path to be rotatable about a first axis, a first ball group disposed between the housing and the rotation bracket and including one rotation axis ball forming the first axis and two guide balls spaced apart from the rotation axis ball, and a first driving unit including a first driving magnet, a first driving coil, and a first position sensor, the first driving unit configured to generate a driving force to rotate the rotation bracket about the first axis. The first driving magnet includes a magnet having three or more polarity zones and two or more neutral zones disposed between the polarity zones, respectively, and a subset of the two or more neutral zones of the magnet faces the first driving coil, and a remaining portion of the two or more neutral zones faces the first position sensor.

[0021] The first driving magnet can include a first magnet including two polarity zones on a surface facing the first driving coil, and a second magnet including three polarity zones on a surface facing the first driving coil. The first driving coil can include a first coil facing the first magnet and a second coil facing the second magnet.

[0022] The first driving magnet can include a third magnet including four polarity zones on a surface facing the first driving coil, and the first driving coil can include a first coil and a second coil facing different polarity zones among the four polarity zones of the third magnet.

[0023] The first position sensor can be disposed between the first coil and the second coil.

[0024] The folding module can further include a reflection bracket coupled to the reflection member and supported on the rotation bracket to be rotatable about a second axis perpendicular to the first axis, a second ball group disposed between the rotation bracket and the reflection bracket and forming the second axis, and a second driving unit including a second driving magnet and a second driving coil and configured to generate a driving force to rotate the reflection bracket about the second axis.

[0025] The lens module can include a first lens module disposed in front of the folding module based on an incident light path and a second lens module disposed behind the folding module based on the incident light path.

[0026] Other features and aspects will become apparent from the following detailed description, taken in conjunction with the accompanying drawings, which illustrate, by way of example, the principles of the application. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a perspective view of a camera module according to an embodiment of the present disclosure.

[0028] Figure 2 is an exploded perspective view of a camera module according to an embodiment of the present disclosure.

[0029] Figure 3 is a view illustrating an arrangement relationship of a first lens module, a folding module, and a second lens module according to an embodiment of the present disclosure.

[0030] Figure 4 is an exploded perspective view of a first lens module according to an embodiment of the present disclosure.

[0031] Figure 5 is a perspective view of a folding module according to an embodiment of the present disclosure.

[0032] Figure 6 is an exploded perspective view of a folding module including a housing according to an embodiment of the present disclosure.

[0033] Figure 7 is an exploded perspective view of a folding module viewed from a different angle than Figure 6 .

[0034] Figures 8 to 11 is a view for explaining a first driving unit according to an embodiment of the present disclosure.

[0035] Figure 12 is a cross-sectional view taken along line I-I' of Figure 5 .

[0036] Figure 13 is an exploded perspective view of a second lens module according to an embodiment of the present disclosure.

[0037] Figure 14 is an exploded perspective view of a second lens module including a housing according to an embodiment of the present disclosure.

[0038] Throughout the drawings and the detailed description, unless otherwise described, the same drawing reference numbers will be used to refer to the same elements. The drawings can not be to scale and the relative dimensions, proportions, and depiction of elements in the drawings can be exaggerated for purpose of clarity, illustration, and convenience. DETAILED DESCRIPTION

[0039] Hereinafter, although examples of the disclosure will be described in detail with reference to the accompanying drawings, it should be noted that the examples are not limited thereto.

[0040] The following detailed description is presented in order to provide a thorough understanding of the methods, apparatuses, and / or systems described herein. However, various changes, modifications, and equivalents will become apparent to those skilled in the art after an understanding of the present disclosure. For example, the sequence of the operations described herein is merely examples and is not limited to the order presented herein, except where otherwise mandated by the operations, and can be changed, which will become apparent after an understanding of the present disclosure. Also, descriptions of features that are well known in the art are omitted for more clarity and conciseness.

[0041] The features described herein can be implemented in different forms and should not be construed as limited to the examples described herein. Rather, these examples are provided so that this disclosure will be thorough and complete, and will fully convey the concept of implementing the methods, apparatuses, and / or systems described herein to those skilled in the art after an understanding of the present disclosure. The examples described herein are to be considered in a sense of enabling a broad number of ways to implement the methods, apparatuses, and / or systems described herein.

[0042] Throughout the specification, when an element such as a layer, region, or substrate is referred to as being "on", "connected to", or "coupled to" another element, it can be directly on, directly connected to, or directly coupled to the other element, or one or more other elements can be interposed therebetween. Conversely, when an element is referred to as being "directly on", "directly connected to", or "directly coupled to" another element, there are no other elements interposed therebetween.

[0043] As used herein, the phrase "and / or" includes any one of the associated listed items, as well as any combination of any two or more of the associated listed items; likewise, "at least one of" includes any one of the associated listed items, as well as any combination of any two or more of the associated listed items.

[0044] Although terms such as "first", "second", and "third" can be used in this document to describe various components, parts, regions, layers, or portions, these components, parts, regions, layers, or portions are not limited by the terms. Rather, the terms are used only to distinguish one component, part, region, layer, or portion from another component, part, region, layer, or portion. Therefore, a first component, a first part, a first region, a first layer, or a first portion mentioned in the examples can also be referred to as a second component, a second part, a second region, a second layer, or a second portion without departing from the teachings of the examples described herein.

[0045] Spatially relative terms, such as "on", "above", "below", "below", "lower", "upper", and the like, can be used herein for ease of description to describe one element's relationship to another element as illustrated in the figures. Such spatially relative terms are in

[0046] The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of the present disclosure. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art. The singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "includes", "including" and the like are in

[0047] The shapes shown in the drawings can vary due to manufacturing techniques and / or tolerances. Thus, the examples described herein are not limited to the precise shapes shown in the drawings, but include variations in shapes that occur during manufacturing.

[0048] It should be noted that, in this document, the phrase "may" is used in relation to examples, for example, with respect to what an example can include or implement, means that at least one example includes or implements such feature, and all examples are not limited to this.

[0049] Features of the examples described herein can be combined in various ways without departing from the present disclosure. In addition, although examples described herein have a variety of configurations, other configurations are possible in accordance with the present disclosure.

[0050] In the specification, a first axis or a first axis direction can refer to an X axis or an X axis direction in the drawings, a second axis or a second axis direction can refer to a Y axis or a Y axis direction in the drawings, and an optical axis (third axis) or an optical axis direction (third axis direction) can refer to a Z axis or a Z axis direction in the drawings. In addition, the first axis can be perpendicular to the optical axis, and the second axis can be perpendicular to both the optical axis and the first axis.

[0051] One or more embodiments of the disclosure disclose a folded module having an increased driving force and an increased yaw rotation driving force during optical image stabilization and a camera module including the same.

[0052] Figure 1 is a perspective view of a camera module 100 according to an embodiment of the disclosure.

[0053] The camera module 100 according to an embodiment of the disclosure can convert a path of light incident on the camera module 100 at least once.

[0054] The camera module 100 according to an embodiment of the disclosure can have a relatively long total length.

[0055] Figure 2 is an exploded perspective view of a camera module 100 according to an embodiment of the disclosure.

[0056] According to an embodiment of the disclosure, the camera module 100 can include a housing 1100, a case 1200, a first lens module 2000, a folded module 3000, a second lens module 4000, an image sensor 5000, a filter unit 6000, and a circuit board 7000. However, the camera module 100 can selectively omit the first lens module 2000.

[0057] The housing 1100 can be a box-shaped member having an open top and an internal space.

[0058] Either one or both of the folded module 3000 and the second lens module 4000 can be accommodated in the internal space of the housing 1100. In an embodiment, the folded module 3000 and the second lens module 4000 can be accommodated together in the internal space of the housing 1100. Alternatively, the folded module 3000 and the second lens module 4000 can be accommodated in different housings 1100. That is, the housing 1100 can individually accommodate the folded module 3000 and the second lens module 4000.

[0059] The first lens module 2000 can be disposed outside the housing 1100. In an embodiment, the first lens module 2000 can be disposed on the open top of the housing 1100.

[0060] The case 1200, the image sensor 5000, the filter unit 6000, and the circuit board 7000 can be coupled to the outside of the housing 1100.

[0061] The image sensor 5000 and the filter unit 6000 can be coupled to one surface of the housing 1100 in a length direction.

[0062] The circuit board 7000 can be coupled to other surfaces of the housing 1100, other than the surfaces to which the image sensor 5000 and the filter unit 6000 are coupled, and to a portion of the bottom surface of the housing 1100.

[0063] The case 1200 can be coupled to the housing 1100 and cover the open top of the housing 1100 and other surfaces of the housing 1100, other than the surfaces to which the image sensor 5000 and the filter unit 6000 are coupled and the bottom surface of the housing 1100. The internal space of the housing 1100 can be separated from the outside of the camera module 100 by the case 1200 coupled to the housing 1100.

[0064] The case 1200 can include an opening 1210, and a portion of the first lens module 2000 can be disposed in the opening 1210.

[0065] Figure 3 Arrangement relationships of the first lens module 2000, the folding module 3000, and the second lens module 4000 according to an embodiment of the disclosure are illustrated.

[0066] According to an embodiment of the disclosure, the first lens module 2000, the folding module 3000, and the second lens module 4000 can be sequentially arranged on a path of light incident on the camera module 100.

[0067] The folding module 3000 can be disposed between the first lens module 2000 and the second lens module 4000 to change the incident light path. In an embodiment, the folding module 3000 can change a travel path of incident light in a first axis direction (X-axis direction) to an optical axis direction (Z-axis direction) based on the accompanying drawings.

[0068] The first lens module 2000 and the folding module 3000 can be disposed in a first axis direction (X-axis direction), and the folding module 3000 and the second lens module 4000 can be disposed in an optical axis direction (Z-axis direction).

[0069] The image sensor 5000 can be disposed behind the second lens module 4000.

[0070] Light emitted from the second lens module 4000 can be incident on the image sensor 5000. In an embodiment, the light emitted from the second lens module 4000 can pass through the filter unit 6000 to be incident on the image sensor 5000.

[0071] The housing 1100 can include an opening on one surface that couples the filter unit 6000 and the image sensor 5000. Accordingly, light emitted from the second lens module 4000 can be incident to the filter unit 6000 and the image sensor 5000 coupled to one surface of the housing 1100 in a length direction from the outside of the housing 1100.

[0072] The image sensor 5000 can generate an electrical signal corresponding to light incident on the image sensor 5000.

[0073] Figure 4 is an exploded perspective view of a first lens module 2000 according to an embodiment of the disclosure.

[0074] According to an embodiment of the disclosure, the first lens module 2000 can include a first lens barrel 2100.

[0075] The first lens barrel 2100 can have one or more lenses disposed thereon in a first axis direction (X-axis direction).

[0076] The first lens barrel 2100 can be disposed in the opening 1210 of the housing 1200 and exposed from the outside of the camera module 100. Accordingly, light reflected from an external object can be incident on the first lens module 2000.

[0077] The first lens barrel 2100 can be seated on and coupled to the top of the folding module 3000. In an embodiment, the folding module 3000 can include a reflection bracket 3200 (see Figure 6 ) and a seating portion 3250 disposed on the top of the reflection bracket 3200, the reflection member 3100 (see Figure 5 ) is seated on the reflection bracket 3200, and the first lens barrel 2100 is seated on the seating portion 3250.

[0078] The seating portion 3250 can be formed in the shape of a guide protrusion that guides a seating position of the first lens barrel 2100, and the first lens barrel 2100 can be aligned by the guide protrusion to be seated on and coupled to the seating portion 3250. For example, the first lens barrel 2100 can be seated and coupled to the top of the folding module 3000 by the guide protrusion for aligning the first axis of the reflection member 3100 and the first axis of the first lens barrel 2100.

[0079] A spacer (not shown) can be further disposed between the first lens barrel 2100 and the seating portion 3250.

[0080] The spacer can include an opening through which light incident from the first lens barrel 2100 passes and a light blocking portion that blocks a portion of the light incident from the first lens barrel 2100. The light blocking portion can be disposed in a peripheral area of the opening.

[0081] According to the above-described structure, the first lens module 2000 can be coupled to the folding module 3000 and rotate together with the folding module 3000 about the first axis (X-axis) and the second axis (Y-axis).

[0082] Figure 5 is a perspective view of a folding module 3000 according to an embodiment of the disclosure.

[0083] According to an embodiment of the disclosure, the folding module 3000 can be disposed below the first lens module 2000 in the first axis direction (X-axis direction).

[0084] The folding module 3000 can include a reflection member 3100 that converts a path of light incident onto the camera module 100. The reflection member 3100 can convert a travel path of light incident in the approximate first axis direction (X-axis direction) to the approximate optical axis direction (Z-axis direction).

[0085] In an embodiment, the reflection member 3100 can be a prism including an incident surface, a reflection surface, and an exit surface. The prism can have the incident surface facing the first lens module 2000 and the exit surface facing the second lens module 4000.

[0086] The camera module 100 according to an embodiment of the disclosure can correct an unstable image that occurs during image capturing by rotating the folding module 3000.

[0087] The folding module 3000 can rotate with respect to the housing 1100 that accommodates the folding module 3000. The folding module 3000 can rotate with respect to the housing 1100 by using the first axis (X-axis) and the second axis (Y-axis) as its rotation axes.

[0088] Hereinafter, a detailed description will be given of the folding module 3000 according to an embodiment of the disclosure. Figure 6 and Figure 7 The components of the folding module 3000 according to an embodiment of the disclosure are described in detail.

[0089] Figure 6 is an exploded perspective view of a folding module including a housing according to an embodiment of the disclosure; and Figure 7 is an exploded perspective view of a folding module viewed from a different angle than Figure 6 .

[0090] According to embodiments of the disclosure, the folding module 3000 can include a reflection member 3100, a reflection bracket 3200, and a rotation bracket 3300. Also, the housing 1100 can also be a component of the folding module 3000.

[0091] In an embodiment, the reflection member 3100 can be a prism as described above, and can convert a traveling path of incident light to approximately the optical axis direction (Z-axis direction). The reflection member 3100 can be mounted on the reflection bracket 3200.

[0092] The reflection bracket 3200 can be rotatably supported by the rotation bracket 3300. In an embodiment, the reflection bracket 3200 can be rotated (pitched) with respect to the rotation bracket 3300 while being supported on the rotation bracket 3300 by using the second axis (Y-axis) as a rotation axis thereof.

[0093] The rotation bracket 3300 can be rotatably supported by the housing 1100. In an embodiment, the rotation bracket 3300 can be rotated (yawed) with respect to the housing 1100 while being supported by the housing 1100 by using the first axis (X-axis) as a rotation axis thereof.

[0094] The reflection member 3100 can be mounted on the reflection bracket 3200 and rotated with the reflection bracket 3200 by using the second axis (Y-axis) as a rotation axis thereof. Also, the reflection member 3100 and the reflection bracket 3200 can be rotated with the rotation bracket 3300 by using the first axis (X-axis) as a rotation axis thereof.

[0095] That is, the reflection member 3100 can be rotated by using the first axis (X-axis) and the second axis (Y-axis) as rotation axes thereof, and an optical image stabilization function of the camera module 100 can be implemented by the rotation of the reflection member 3100.

[0096] The folding module 3000 can include a first driving unit 3330 that generates a driving force to rotate the rotation bracket 3300 about the first axis (X-axis).

[0097] The first driving unit 3330 can be a voice coil motor including a first driving magnet 3331 and a first driving coil 3332.

[0098] The first driving unit 3330 can be separately provided in the rotation bracket 3300 and the housing 1100. For example, the first driving magnet 3331 can be provided on a bottom surface of the rotation bracket 3300, and the first driving coil 3332 can be provided in the housing 1100 and face the first driving magnet 3331. In an embodiment, the first driving coil 3332 can be mounted on the circuit board 7000 and provided in the housing 1100.

[0099] The first driving magnet 3331 and the first driving coil 3332 can face each other in the first axis direction (X-axis direction).

[0100] According to an embodiment of the present disclosure, at least one first driving magnet 3331 can be provided. The first driving magnet 3331 can have a surface facing the first driving coil 3332 and magnetized to a North (N) pole (or a South (S) pole), a neutral zone, and an S pole (or an N pole) in a rotation direction of the rotation bracket 3300. However, such a configuration is merely an embodiment, and details thereof will be described below.

[0101] The first driving coil 3332 can include a plurality of coils facing the first driving magnet 3331. In an embodiment, the first driving coil 3332 can include two coils. According to an embodiment of the present disclosure, the first driving unit 3330 can include two coils, thereby increasing a driving force for rotating the rotation bracket 3300 about the first axis (X-axis).

[0102] The first driving magnet 3331 and the first driving coil 3332 can generate a driving force for rotating the rotation bracket 3300 about the first axis (X-axis) through electromagnetic interaction.

[0103] The first driving unit 3330 can include a first position sensor 3333. The first position sensor 3333 can detect a position of the first driving magnet 3331. One or more first position sensors 3333 can be provided.

[0104] The first position sensor 3333 can be installed on the circuit board 7000 together with the first driving coil 3332 and provided in the housing 1100. When the folding module 3000 is in the middle position thereof, the first position sensor 3333 can face the neutral zone of the first driving magnet 3331.

[0105] The first position sensor 3333 can be a magnetic sensor. For example, the first position sensor 3333 can be a Hall sensor.

[0106] The first yoke 3334 can be provided on a surface of the circuit board 7000 opposite to a surface thereof on which the first driving coil 3332 and the first position sensor 3333 are provided.

[0107] The first yoke 3334 can face the first driving magnet 3331, with the first driving coil 3332 and the first position sensor 3333 interposed between the first yoke 3334 and the first driving magnet 3331.

[0108] The first yoke 3334 can be a magnetic material and can focus magnetic lines of force generated in the first driving magnet 3331.

[0109] Further, the first yoke 3334 can generate magnetic attraction in a direction in which the first yoke 3334 faces the first driving magnet 3331. Details thereof will be described below.

[0110] A plurality of ball members (hereinafter referred to as a first ball group) 3410 and 3420 can be disposed between the rotation support 3300 and the housing 1100 to rotate the rotation support 3300 with respect to the housing 1100 about a first axis (X-axis).

[0111] The first ball group 3410 and 3420 can separate the rotation support 3300 and the housing 1100 from each other and support the rotation of the rotation support 3300 while rotating in place or performing a rolling motion.

[0112] The first ball group 3410 and 3420 can include one rotation axis ball 3410 and two guide balls 3420. The number of the rotation axis ball 3410 and the guide ball 3420 described in this specification is merely an example, and a different number of the rotation axis ball 3410 and the guide ball 3420 can be provided.

[0113] The rotation axis ball 3410 can provide a rotation axis of the rotation support 3300. That is, the first axis (X-axis) can pass through the rotation axis ball 3410.

[0114] The rotation axis ball 3410 can be accommodated in a first accommodation groove 1120 formed in the housing 1100 and a second accommodation groove 3320 formed in the rotation support 3300. The first accommodation groove 1120 and the second accommodation groove 3320 can face each other in a first axis direction (X-axis direction).

[0115] Each of the first accommodation groove 1120 and the second accommodation groove 3320 can have at least three inclined surfaces, and the rotation axis ball 3410 can be supported at three or more points in each of the first accommodation groove 1120 and the second accommodation groove 3320. Accordingly, the rotation axis ball 3410 can form a rotation axis of the rotation support 3300 while being sandwiched in the first accommodation groove 1120 and the second accommodation groove 3320 and rotating in place.

[0116] The guide balls 3420 can be spaced apart from the rotation axis ball 3410.

[0117] The guide balls 3420 can be accommodated in a first guide groove 1130 formed in the housing 1100 and a second guide groove 3322 formed in the rotation support 3300. The number of the first guide groove 1130 and the second guide groove 3322 can correspond to the number of the guide balls 3420, and the first guide groove 1130 and the second guide groove 3322 can face each other in the first axis direction (X-axis direction).

[0118] The first guide groove 1130 or the second guide groove 3322 can be formed as a curved line or a straight line extending in a circumferential direction centered on the first axis (X axis).

[0119] The guide ball 3420 can be supported at two points in either one of the first guide groove 1130 and the second guide groove 3322, and can be supported at one point in the other one of the first guide groove 1130 and the second guide groove 3322. For example, the guide ball 3420 can be supported at two points in the first guide groove 1130 and at one point in the second guide groove 3322 (or vice versa). Accordingly, the guide ball 3420 can support the rotation of the rotation support 3300 while being accommodated in the first guide groove 1130 and the second guide groove 3322 and performing a rolling motion.

[0120] The folding module 3000 can include a second driving unit 3230 that generates a driving force to rotate the reflection support 3200 about the second axis (Y axis).

[0121] The second driving unit 3230 can be a voice coil motor including a second driving magnet 3231 and a second driving coil 3232.

[0122] The second driving unit 3230 can be separately disposed in the reflection support 3200 and the housing 1100. For example, the second driving magnet 3231 can be disposed on the reflection support 3200, and the second driving coil 3232 can be disposed in the housing 1100 and face the second driving magnet 3231.

[0123] In an embodiment, the reflection support 3200 can include an extension 3210 extending between the rotation support 3300 and the housing 1100, and the second driving magnet 3231 can be disposed in the extension 3210. Also, in an embodiment, the second driving coil 3232 can be mounted on the circuit board 7000 and disposed in the housing 1100.

[0124] The second driving magnet 3231 and the second driving coil 3232 can face each other in the optical axis direction (Z axis direction).

[0125] The second driving magnet 3231 can have a surface facing the second driving coil 3232 and magnetized into a North (N) pole (or a South (S) pole), a neutral zone, and an S pole (or an N pole) in the first axis direction (X axis direction).

[0126] The second driving coil 3232 can include one or more coils, for example, two coils, facing the second driving magnet 3231.

[0127] The second driving magnet 3231 and the second driving coil 3232 can generate a driving force for rotating the reflection bracket 3200 about a second axis (Y-axis) through electromagnetic interaction.

[0128] The second driving unit 3230 can include a second position sensor 3233. The second position sensor 3233 can detect a position of the second driving magnet 3231. One or more second position sensors 3233 can be provided.

[0129] The second position sensor 3233 can be installed with the second driving coil 3232 on the circuit board 7000 and disposed in the housing 1100. The second position sensor 3233 can face a neutral zone of the second driving magnet 3231 when the folding module 3000 is in the middle position thereof.

[0130] The second position sensor 3233 can be a magnetic sensor. For example, the second position sensor 3233 can be a Hall sensor.

[0131] The second yoke 3234 can be disposed on a surface of the circuit board 7000 opposite to a surface thereof on which the second driving coil 3232 and the second position sensor 3233 are disposed.

[0132] The second yoke 3234 can face the second driving magnet 3231 while interposing the second driving coil 3232 and the second position sensor 3233 between the second yoke 3234 and the second driving magnet 3231.

[0133] The second yoke 3234 can be a magnetic material and can focus magnetic lines of force generated in the second driving magnet 3231.

[0134] A plurality of ball members (hereinafter referred to as a second ball group) 3430 can be disposed between the reflection bracket 3200 and the rotation bracket 3300 to rotate the reflection bracket 3200 about a second axis (Y-axis) with respect to the rotation bracket 3300.

[0135] The second ball group 3430 can separate the reflection bracket 3200 and the rotation bracket 3300 from each other and can support rotation of the reflection bracket 3200 while rotating in place.

[0136] The second ball group 3430 can include a plurality of ball members spaced apart from each other in a second axis direction (Y-axis direction). For example, the second ball group 3430 can include two ball members. The number of ball members 3430 described in this specification is merely an example, and a different number of ball members 3430 can be provided.

[0137] The plurality of ball members 3430 can provide a rotation axis of the reflection bracket 3200. That is, the second axis (Y-axis) can pass through the plurality of ball members 3430.

[0138] The plurality of ball members 3430 can be accommodated in third accommodation grooves 3310 formed in the rotation bracket 3300 and fourth accommodation grooves 3220 formed in the reflection bracket 3200. The number of the third accommodation grooves 3310 and the fourth accommodation grooves 3220 can correspond to the number of the plurality of ball members 3430, and the third accommodation grooves 3310 and the fourth accommodation grooves 3220 can face each other in the optical axis direction.

[0139] At least one of the third accommodation grooves 3310 and the fourth accommodation grooves 3220 can have three inclined surfaces, and the other of the third accommodation grooves 3310 and the fourth accommodation grooves 3220 can have at least two inclined surfaces. Accordingly, the plurality of ball members 3430 can be supported at three points in at least one of the third accommodation grooves 3310 and the fourth accommodation grooves 3220, and can be supported at two points in the other of the third accommodation grooves 3310 and the fourth accommodation grooves 3220. The plurality of ball members 3430 can form a rotation axis of the reflection bracket 3200 while being pinched in the third accommodation grooves 3310 and the fourth accommodation grooves 3220 and rotating in place, and some portions can have degrees of freedom in one direction at the same time, thereby also overcoming defects caused by tolerances.

[0140] Hereinafter, the specification describes various embodiments related to a first driving unit 3330 that rotates the rotation bracket 3300 about a first axis (X-axis).

[0141] Figures 8 to 11 is a view for explaining a first driving unit according to an embodiment of the disclosure.

[0142] The first driving unit 3330 can include one or more first driving magnets 3331 and a plurality of first driving coils 3332. In an embodiment, the first driving magnets 3331 can include one or two magnets, and the first driving coils 3332 can include two coils.

[0143] Referring to Figure 8 , the first driving magnets 3331 can include two magnets (hereinafter referred to as a first magnet 3331a and a second magnet 3331b), and the first driving coils 3332 can include two coils (hereinafter referred to as a first coil 3332a and a second coil 3332b) that face these magnets, respectively. For example, the first magnet 3331a can face the first coil 3332a, and the second magnet 3331b can face the second coil 3332b.

[0144] The first driving magnets 3331 can be disposed in the first ball groups 3410 and 3420. For example, the first magnet 3331a and the second magnet 3331b can be disposed in a space between the rotation shaft ball 3410 and the guide ball 3420 while being spaced apart from each other. The first magnet 3331a and the second magnet 3331b can be spaced apart from each other in a rotation direction of the rotation support 3300.

[0145] The first magnet 3331a can have a surface facing the first coil 3332a and magnetized into a first polarity region P1, a neutral region N, and a second polarity region P2. The first polarity region P1 and the second polarity region P2 can have different polarities. For example, the first polarity region P1 can be an N-pole (or an S-pole), and the second polarity region P2 can be an S-pole (or an N-pole). The neutral region N can be a boundary region therebetween. The first polarity region P1, the neutral region N, and the second polarity region P2 can be disposed in a length direction of the first magnet 3331a.

[0146] The second magnet 3331b can have a surface facing the second coil 3332b and magnetized into a first polarity region P1, a first neutral region N1, a second polarity region P2, a second neutral region N2, and a third polarity region P3. The first polarity region P1 or the third polarity region P3 can have a different polarity from the second polarity region P2. For example, the first polarity region P1 or the third polarity region P3 can be an N-pole (or an S-pole), and the second polarity region P2 can be an S-pole (or an N-pole). The first neutral region N1 or the second neutral region N2 can be a boundary region therebetween. The second magnet 3331b can be longer than the first magnet 3331a, and the first polarity region P1, the first neutral region N1, the second polarity region P2, the second neutral region N2, and the third polarity region P3 can be arranged in a length direction of the second magnet 3331b.

[0147] Further, the second magnet 3331b can face the first position sensor 3333. In an embodiment, when the folding module 3000 is in the middle position thereof, the second coil 3332b can face the first polarity region P1, the first neutral region N1, and the second polarity region P2 of the second magnet 3331b, and the first position sensor 3333 can face the second neutral region N2 of the second magnet 3331b. When the rotation support 3300 rotates about the first axis (X-axis), the first position sensor 3333 can face the second polarity region P2 or the third polarity region P3, and can detect a change in magnetic flux in the process, thereby measuring an amount of movement of the rotation support 3300.

[0148] That is, the first and second polarity regions P1 and P2 disposed on both sides of the first neutral region N1 can be used for driving force formation, and the second and third polarity regions P2 and P3 disposed on both sides of the second neutral region N2 can be used for position sensing. The second polarity region P2 can be used for both driving force formation and position sensing.

[0149] According to Figure 9 According to the embodiment shown in FIG. 33, the first driving magnet 3331 or the first driving coil 3332 can be disposed between the rotation shaft ball 3410 and the guide ball 3420 and be biased toward the guide ball 3420. Such a structure can provide improved driving efficiency by disposing the center of driving force for rotating the rotation support 3300 away from the first axis (X axis) as a rotation center.

[0150] In detail, the first driving unit 3330 can be disposed to satisfy r / 2 < d < r, where r denotes the radius of a circle passing through both guide balls 3420 while using the first axis (X axis) as a rotation center (or the approximate distance between the rotation shaft ball 3410 and the guide ball 3420), and d denotes the distance between the first axis (X axis) and the center of driving force of the first driving unit 3330. If there are a plurality of driving force centers, the first driving unit 3330 can be disposed so that all of the plurality of driving force centers satisfy the above expression.

[0151] Referring to Figure 10 , the first driving magnet 3331 can include one magnet (hereinafter referred to as a third magnet 3331c), and the first driving coil 3332 can include a first coil 3332a and a second coil 3332b facing the third magnet 3331c.

[0152] The third magnet 3331c can be disposed in a space between the rotation shaft ball 3410 and the guide ball 3420. In an embodiment, the third magnet 3331c can be disposed between the rotation shaft ball 3410 and the guide ball 3420 and be biased toward the guide ball 3420 to have a portion disposed between both guide balls 3420.

[0153] The third magnet 3331c can have a surface facing the first coil 3332a and the second coil 3332b and magnetized into the first polarity region P1, the first neutral region N1, the second polarity region P2, the second neutral region N2, the third polarity region P3, the third neutral region N3, and the fourth polarity region P4. For example, the first polarity region P1 can be an N-pole (or an S-pole), the second polarity region P2 can be an S-pole (or an N-pole), the third polarity region P3 can be an N-pole (or an S-pole), and the fourth polarity region P4 can be an S-pole (or an N-pole). The first neutral region N1, the second neutral region N2, and the third neutral region N3 can be their boundary regions. The polarity regions and the neutral regions can be sequentially disposed in a length direction of the third magnet 3331c. In an embodiment, the length direction of the third magnet 3331c can be parallel to the second axis direction (Y-axis direction).

[0154] In addition, the third magnet 3331c can face the first position sensor 3333. The first position sensor 3333 can be disposed between the first coil 3332a and the second coil 3332b and face the second neutral region N2. Accordingly, the second polarity region P2 and the third polarity region P3 disposed on both sides of the second neutral region N2 can be used for both driving force formation and position sensing.

[0155] Referring to Figure 11 , the first driving magnet 3331 can include one magnet having a circular arc shape (hereinafter referred to as a fourth magnet 3331d), and the first driving coil 3332 can include the first coil 3332a and the second coil 3332b facing the fourth magnet 3331d.

[0156] The fourth magnet 3331d can have a circular arc shape centered on the first axis (X-axis).

[0157] The fourth magnet 3331d can have a surface facing the first coil 3332a and the second coil 3332b and magnetized into the first polarity region P1, the first neutral region N1, the second polarity region P2, the second neutral region N2, the third polarity region P3, the third neutral region N3, and the fourth polarity region P4 in the circular arc direction.

[0158] The description omits other descriptions of the embodiments shown in Figure 11 , and these are replaced with the above-described description of the embodiments of Figure 10 .

[0159] Figure 12 is a cross-sectional view taken along the line I-I' of Figure 5 .

[0160] Figure 12 A support structure of the folding module 3000 according to an embodiment of the disclosure is illustrated.

[0161] According to embodiments of the present disclosure, the rotation holder 3300 can be supported by the housing 1100, and the reflection holder 3200 can be supported by the rotation holder 3300.

[0162] Referring to Figure 12 , the rotation holder 3300 can be supported by the housing 1100 in the first axis direction (X-axis direction). In embodiments, the first driving magnet 3331 disposed on the rotation holder 3300 and the first yoke 3334 disposed on the housing 1100 can generate magnetic attraction in a direction in which the first driving magnet 3331 and the first yoke 3334 face each other, that is, the first axis direction (X-axis direction). The rotation holder 3300 can be supported by the housing 1100 in the first axis direction (X-axis direction) by the magnetic attraction formed by the first driving magnet 3331 and the first yoke 3334, while the first ball sets 3410 and 3420 are interposed between the rotation holder 3300 and the housing 1100.

[0163] Meanwhile, the reflection holder 3200 can be supported by the rotation holder 3300 in the optical axis direction (Z-axis direction). The reflection holder 3200 and the rotation holder 3300 can include a pair of magnetic materials 3240 and 3340 disposed on surfaces of the reflection holder 3200 and the rotation holder 3300 facing each other in the optical axis direction (Z-axis direction).

[0164] The pair of magnetic materials 3240 and 3340 can be a first magnetic material 3240 disposed on the reflection holder 3200 and a second magnetic material 3340 disposed on the rotation holder 3300.

[0165] The first magnetic material 3240 or the second magnetic material 3340 can be a traction magnet or a traction yoke. The first magnetic material 3240 and the second magnetic material 3340 can face each other in the optical axis direction (Z-axis direction), thereby generating magnetic attraction in a direction in which the first magnetic material 3240 and the second magnetic material 3340 face each other. The reflection holder 3200 can be supported by the rotation holder 3300 in the optical axis direction (Z-axis direction) by the magnetic attraction formed by the first magnetic material 3240 and the second magnetic material 3340, while the second ball set 3430 is interposed between the reflection holder 3200 and the rotation holder 3300.

[0166] Figure 13 is an exploded perspective view of a second lens module according to embodiments of the present disclosure.

[0167] According to embodiments of the present disclosure, the second lens module 4000 can include a second lens barrel 4100 and a lens holder 4200. In addition, the housing 1100 can also be a component of the second lens module 4000.

[0168] The second lens barrel 4100 can accommodate one or more lenses arranged along the optical axis, and the second lens barrel 4100 can be disposed in the lens holder 4200.

[0169] The lens holder 4200 can be supported by the housing 1100 to be movable in the optical axis direction. The second lens barrel 4100 can be accommodated in the lens holder 4200 and can be moved together with the lens holder 4200 in the optical axis direction. Also, one or more lenses can be moved together with the second lens barrel 4100 and the lens holder 4200 in the optical axis direction.

[0170] That is, one or more lenses can be moved in the optical axis direction, and an auto focus function of the camera module 100 can be implemented by moving the one or more lenses.

[0171] The second lens module 4000 can include a third driving unit 4300 that generates a driving force to move the lens holder 4200 in the optical axis direction.

[0172] The third driving unit 4300 can be a voice coil motor including a third driving magnet 4310 and a third driving coil 4320.

[0173] The third driving unit 4300 can be separately disposed in the lens holder 4200 and the housing 1100. For example, the third driving magnet 4310 can be disposed on one surface or each of two surfaces of the lens holder 4200, and the third driving coil 4320 can be disposed in the housing 1100 and face the third driving magnet 4310. In an embodiment, the third driving coil 4320 can be mounted on the circuit board 7000 and disposed in the housing 1100.

[0174] The third driving magnet 4310 and the third driving coil 4320 can face each other in a direction perpendicular to the optical axis, for example, a second axis direction (Y axis direction).

[0175] The third driving magnet 4310 can have a surface facing the third driving coil 4320 and magnetized into an N pole (or an S pole), a neutral zone, and an S pole (or an N pole) in the optical axis direction (Z axis direction).

[0176] The third driving magnet 4310 and the third driving coil 4320 can use electromagnetic interaction to thereby generate a driving force for moving the lens holder 4200 in the optical axis direction.

[0177] The third driving unit 4300 can include a third position sensor 4330. The third position sensor 4330 can detect a position of the third driving magnet 4310 in the optical axis direction. One or more third position sensors 4330 can be disposed.

[0178] The third position sensor 4330 can be installed on the circuit board 7000 together with the third driving coil 4320 and disposed in the housing 1100. The third position sensor 4330 can face the neutral zone of the third driving magnet 4310 when the second lens module 4000 is in its initial position.

[0179] The third position sensor 4330 can be a magnetic sensor. For example, the third position sensor 4330 can be a Hall sensor.

[0180] A third yoke (not shown) can be disposed on a surface of the circuit board 7000 opposite to a surface on which the third driving coil 4320 and the third position sensor 4330 are disposed.

[0181] The third yoke can face the third driving magnet 4310 while the third driving coil 4320 and the third position sensor 4330 are interposed between the third yoke and the third driving magnet 4310.

[0182] The third yoke can be a magnetic material and can focus on magnetic lines of force generated in the third driving magnet 4310.

[0183] Figure 14 is an exploded perspective view of a second lens module including a housing according to an embodiment of the disclosure.

[0184] The third ball group 4600 can separate the lens holder 4200 and the housing 1100 from each other and perform a rolling motion to support a motion of the lens holder 4200.

[0185] The third ball group 4600 can include at least three ball members. In an embodiment, the third ball group 4600 can include four ball members 4610, 4620, 4630, and 4640.

[0186] Among the four ball members 4610, 4620, 4630, and 4640, two ball members can support one side of the lens holder 4200, and the other two ball members can support the other side of the lens holder 4200. The one side and the other side of the lens holder 4200 can be opposite to each other based on the optical axis.

[0187] The four ball members 4610, 4620, 4630, and 4640 can be accommodated in third guide grooves 1140 formed in the housing 1100 and fourth guide grooves 4230 formed in the lens holder 4200. The number of the third guide grooves 1140 and the fourth guide grooves 4230 can correspond to the number of the third ball group 4600, and the third guide grooves 1140 and the fourth guide grooves 4230 can face each other in the first axis direction (X-axis direction).

[0188] The third guide groove 1140 or the fourth guide groove 4230 can be formed in a straight line extending in the approximate optical axis direction.

[0189] The four ball members 4610, 4620, 4630, and 4640 can be supported at two points in at least some of the third guide grooves 1140 and the fourth guide grooves 4230, and can be supported at one point in the remaining grooves of the third guide grooves 1140 and the fourth guide grooves 4230. Accordingly, the four ball members 4610, 4620, 4630, and 4640 can perform a rolling motion while being accommodated in the third guide grooves 1140 and the fourth guide grooves 4230, thereby supporting the movement of the lens holder 4200.

[0190] The lens holder 4200 can be supported by the housing 1100 in the first axis direction (X-axis direction). The lens holder 4200 and the housing 1100 can include a pair of magnetic materials 4510 and 4520 disposed on surfaces of the lens holder 4200 and the housing 1100 facing each other in the first axis direction (X-axis direction).

[0191] The pair of magnetic materials 4510 and 4520 can be a third magnetic material 4510 disposed on the lens holder 4200 and a fourth magnetic material 4520 disposed on the housing 1100.

[0192] The third magnetic material 4510 or the fourth magnetic material 4520 can be a traction magnet or a traction yoke. The third magnetic material 4510 and the fourth magnetic material 4520 can face each other in the first axis direction (X-axis direction), thereby generating magnetic attraction in a direction in which the third magnetic material 4510 and the fourth magnetic material 4520 face each other. The lens holder 4200 can be supported by the housing 1100 in the first axis direction (X-axis direction) by the magnetic attraction formed by the third magnetic material 4510 and the fourth magnetic material 4520, while the four ball members 4610, 4620, 4630, and 4640 are interposed between the lens holder 4200 and the housing 1100 and move in the optical axis direction (Z-axis direction).

[0193] To more stably support the movement of the lens holder 4200 in the optical axis direction (Z-axis direction), the third magnetic material 4510 disposed on the lens holder 4200 can be located in a quadrangular support area having the four ball members 4610, 4620, 4630, and 4640 as its vertices.

[0194] As described above, according to the embodiment of the disclosure, the folded module can have an increased yaw rotation driving force, and the camera module can thus have improved optical image stabilization operation performance.

[0195] While specific examples have been shown and described, it will be apparent to those skilled in the art, upon understanding the disclosure, that various changes in form and details can be made without departing from the spirit and scope of the claims and their equivalents. The examples described herein are to be understood as being descriptive in nature and not as being limiting in purpose. Descriptions of features or aspects within each example are to be considered as applicable to similar features or aspects within other examples. Proper results can be achieved if the described techniques are performed in a different order, and / or if components in the described systems, architectures, devices, or circuits are combined or substituted for one another or are supplemented, regardless of whether any such design choices are expressly described. Accordingly, the scope of the disclosure is not limited by the specific implementations described above, but only by the claims and their equivalents, and any variations that would be apparent to one of skill in the art upon reading the disclosure will be considered to fall within the scope of the disclosure as defined by the claims and their equivalents.

Claims

1. Folded module, characterized in that, The folding module includes: a housing; a rotation support which supports the reflection member on the housing to be rotatable about a first axis; a first ball group which is disposed between the housing and the rotation support and includes a rotation axis ball forming the first axis and two guide balls spaced apart from the rotation axis ball; and a first driving unit including a first driving magnet and a first driving coil and configured to generate a driving force to rotate the rotation support about the first axis, wherein the first driving magnet and the first driving coil are disposed in a space between the rotation axis ball and the two guide balls to be closer to the two guide balls than to the rotation axis ball. 2.The folding module of claim 1, wherein the first driving coil includes a first coil facing the first driving magnet and a second coil.

3. The folding module of claim 2, wherein, the first driving magnet includes: a first magnet facing the first coil and including two polarity zones on a surface facing the first coil; and a second magnet facing the second coil and including three polarity zones on a surface facing the second coil.

4. The folding module of claim 3, wherein, the first driving unit further includes a first position sensor facing the second magnet.

5. The folding module of claim 2, wherein, the first driving magnet includes a third magnet facing the first coil and the second coil, and the third magnet includes four polarity zones on a surface facing the first coil and the second coil.

6. The folding module of claim 5, wherein, the third magnet includes a first polarity zone, a second polarity zone, a third polarity zone, and a fourth polarity zone sequentially disposed in a length direction of the third magnet, and the first coil faces the first polarity zone and the second polarity zone, and the second coil faces the third polarity zone and the fourth polarity zone.

7. The folding module of claim 5, wherein, the first driving unit further includes a first position sensor facing the third magnet, and the first position sensor is disposed between the first coil and the second coil.

8. The foldable module of claim 1, wherein, the first driving magnet is disposed in the rotation support, and the first driving coil is disposed on the housing and faces the first driving magnet, and wherein the folding module further includes a first yoke facing the first driving magnet while the first driving coil is interposed between the first yoke and the first driving magnet, and generates magnetic attraction with the first driving magnet.

9. The folding module of claim 1, wherein, The folding module further includes: a reflection support coupled to the reflection member and supported on the rotation support to be rotatable about a second axis perpendicular to the first axis; a second ball group disposed between the rotation support and the reflection support and forming the second axis; and a second driving unit including a second driving magnet and a second driving coil and configured to generate a driving force to rotate the reflection support about the second axis.

10. The folding module of claim 9, wherein, the second driving magnet is disposed on the reflection support, and the second driving coil disposed on the housing faces the second driving magnet.

11. The folding module of claim 10, wherein, The folding module further includes: a first magnetic material disposed on the reflection support; and a second magnetic material disposed on the rotation support and facing the first magnetic material, wherein the first magnetic material and the second magnetic material generate magnetic attraction therebetween.

12. A camera module characterized by, The camera module includes: a housing; one or more lens modules disposed in the housing and including at least one lens; and a folding module disposed in the housing, the folding module including: a rotation support supported on the housing with a reflection member configured to change an incident light path so as to be rotatable about a first axis, a first ball group disposed between the housing and the rotation support and including one rotation axis ball forming the first axis and two guide balls spaced apart from the rotation axis ball, and a first driving unit including a first driving magnet, a first driving coil, and a first position sensor, the first driving unit configured to generate a driving force to rotate the rotation support about the first axis, wherein the first driving magnet includes a magnet having three or more polarity zones and two or more neutral zones respectively disposed between the polarity zones, and a subset of the two or more neutral zones of the magnet faces the first driving coil, and a remaining portion of the two or more neutral zones faces the first position sensor.

13. The camera module of claim 12, wherein, The first driving magnet includes: a first magnet including two polarity zones on a surface facing the first driving coil; and a second magnet including three polarity zones on a surface facing the first driving coil, and wherein the first driving coil includes a first coil facing the first magnet and a second coil facing the second magnet.

14. The camera module of claim 12, wherein, The first driving magnet includes a third magnet including four polarity zones on a surface facing the first driving coil, and the first driving coil includes a first coil facing different polarity zones among the four polarity zones of the third magnet and a second coil.

15. The camera module of claim 14, wherein, The first position sensor is disposed between the first coil and the second coil.

16. The camera module of claim 12, wherein, The folding module further includes: a reflection support coupled to the reflection member and supported on the rotation support so as to be rotatable about a second axis perpendicular to the first axis; a second ball group disposed between the rotation support and the reflection support and forming the second axis; and a second driving unit including a second driving magnet and a second driving coil and configured to generate a driving force to rotate the reflection support about the second axis.

17. The camera module of claim 12, wherein, The lens module includes: a first lens module disposed in front of the folding module based on the incident light path, and a second lens module disposed behind the folding module based on the incident light path.

Images