Reflection module and camera module

Abstract

A reflective module and a camera module are provided. The reflection module includes: a housing; a rotation holder accommodated in the housing; a reflection holder disposed on the rotation holder and on which a first magnetic material and a reflection member configured to change a path of incident light are disposed; and a driving unit configured to generate a driving force to rotate the reflecting member, in which the driving unit includes a first driving magnet provided on the rotating holder and a first driving coil provided on the housing, and in which the first driving magnet faces the first driving coil in a first direction and the second driving magnet faces the second driving coil in a second direction. And faces the first magnetic material in a second direction different from the first direction.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority from Korean Patent Application No. 10-2023-0148862 filed in the Korean Intellectual Property Office on November 1, 2023, the disclosure of which is incorporated herein in its entirety for all purposes by reference. Technical Field

[0003] The following description relates to a reflective module and a camera module including the reflective module. Background Art

[0004] The camera module provided in the mobile device is manufactured to have a performance comparable to that of a conventional camera. For example, the mobile device may implement a camera module in which an auto focus function, an optical image stabilization function, a zoom function, etc. are provided.

[0005] In addition, recent mobile camera modules use reflectors to fully secure the total length (or total track length). This structure has the advantage of increasing the optical path without increasing or decreasing the length of the camera module, thereby enabling high zoom magnification.

[0006] A camera module including a reflector may generally be configured to rotate the reflector during shake compensation. However, since components providing a rotational driving force to the reflector and components stably supporting the reflector should be disposed around a relatively small reflector, there may be space limitations.

[0007] The above information is presented as background information only to assist in understanding the present disclosure. No determination has been made, and no assertion is made, as to whether any of the above may be applicable as prior art with respect to the present disclosure. Summary of the invention

[0008] This Summary is provided to introduce a selection of concepts in a simplified form that are further described in the Detailed Description below. This Summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

[0009] In general, the reflection module includes: a shell; a rotating holder accommodated in the shell; the reflection holder on which a first magnetic material and a reflection member are disposed, the reflection member being configured to change a path of incident light; and a driving unit configured to generate a driving force to rotate the reflection member, wherein the driving unit includes a first driving magnet disposed on the rotating holder and a first driving coil disposed on the shell, and wherein the first driving magnet faces the first driving coil in a first direction and faces the first magnetic material in a second direction different from the first direction.

[0010] The reflective holder may be arranged on the rotating holder.

[0011] A first direction in which the first driving magnet and the first driving coil face each other and a second direction in which the first driving magnet and the first magnetic material face each other may be perpendicular to each other.

[0012] The first driving coil may include two coils spaced apart in a length direction of the first driving magnet.

[0013] The reflection module may also include a first ball group arranged between the shell and the rotation holder, wherein the first ball group may include a rotation axis ball and a plurality of guide balls, the rotation axis ball forming a first axis which is the rotation axis of the rotation holder, and the plurality of guide balls are spaced apart from the rotation axis ball and configured to support the rotation of the rotation holder.

[0014] The first driving magnet and the first driving coil may be disposed between the rotating shaft ball and the plurality of guide balls to be biased toward the rotating shaft ball.

[0015] The driving unit may further include a second driving magnet disposed on the reflection holder and a second driving coil disposed on the housing.

[0016] The reflection holder may include an extending portion extending between the rotation holder and the housing, and the second driving magnet is provided on the extending portion.

[0017] The reflection module may further include a second ball group disposed between the rotation holder and the reflection holder, wherein the second ball group includes two ball members spaced apart in a direction of a second axis, the second axis being a rotation axis of the reflection holder.

[0018] The rotation holder may be supported by the housing in a first direction, and the reflection holder may be supported by the rotation holder in a second direction.

[0019] In general, a camera module includes: a housing; a reflection module, housed in the housing and including a reflection member configured to change the path of incident light; and a lens module, housed in the housing and including at least one lens arranged in a direction parallel to the optical axis, wherein the reflection module also includes a reflection holder and a rotating holder, the reflection member is arranged on the reflection holder, the reflection holder is arranged on the rotating holder, and wherein a magnet is arranged on the rotating holder, the magnet is configured to generate an attraction force relative to the reflection holder in a first direction parallel to the optical axis, and is configured to generate an attraction force relative to the housing in a second direction, the second direction being parallel to a first axis perpendicular to the optical axis.

[0020] The magnet may face the first magnetic material in the first direction and face the first yoke in the second direction.

[0021] The first magnetic material may be a pulling yoke disposed on the reflective holder.

[0022] The magnet may face the coil in the second direction.

[0023] The rotating holder can be configured to rotate around a first axis, wherein a rotating shaft ball forming the first axis and a plurality of guide balls spaced apart from the rotating shaft ball can be arranged between the rotating holder and the housing, and wherein a magnet can be arranged between the rotating shaft ball and the plurality of guide balls to be biased toward the rotating shaft ball in the direction of the optical axis.

[0024] The reflection holder may be configured to rotate about a second axis perpendicular to the optical axis and the first axis, and wherein a plurality of ball members spaced apart in the direction of the second axis may be provided between the reflection holder and the rotation holder.

[0025] The lens module may be configured to move in a direction of an optical axis, and a plurality of ball members supporting movement of the lens module in the direction of the optical axis may be provided between the lens module and the housing.

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

[0027] Figure 1 A perspective view of an exemplary camera module is shown in accordance with one or more implementations.

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

[0029] Figure 3 A perspective view of an exemplary camera module with a housing separated therefrom is shown in accordance with one or more embodiments.

[0030] Figure 4 An exploded perspective view of an exemplary reflective module according to one or more implementations is shown.

[0031] Figure 5 Shown is a view taken along line II' Figure 1 sectional view of .

[0032] Figure 6 Shown is a view taken along line II-II' Figure 1 sectional view of .

[0033] Figure 7 A bottom view of a rotation holder is shown in accordance with one or more embodiments.

[0034] Figure 8An exploded perspective view of a housing and a lens module according to one or more embodiments is shown.

[0035] Fig. 9 An exploded perspective view of a lens module according to one or more embodiments is shown.

[0036] Fig.10 An exploded perspective view of a housing and an exemplary circuit board is shown in accordance with one or more embodiments.

[0037] Throughout the drawings and detailed description, unless otherwise described, the same reference numerals refer to the same elements. For clarity, illustration, and convenience, the drawings may not be drawn to scale, and the relative sizes, proportions, and depictions of elements in the drawings may be exaggerated. DETAILED DESCRIPTION

[0038] Hereinafter, although examples of the present disclosure will be described in detail with reference to the accompanying drawings, it should be noted that the examples are not limited thereto.

[0039] The following specific embodiments are provided to help the reader gain a comprehensive understanding of the methods, devices, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, devices, and / or systems described herein will be apparent after understanding the present disclosure. For example, the order of operations described herein is merely an example and is not limited to the order set forth herein, but may be changed as will be apparent after understanding the present disclosure, except for operations that must occur in a certain order. In addition, descriptions of features known in the art may be omitted for clarity and brevity.

[0040] The features described herein may be implemented in different forms and are not to be construed as being limited to the examples described herein. Rather, the examples described herein are provided only to illustrate some of the many possible ways to implement the methods, devices, and / or systems described herein that will be apparent after understanding the present disclosure.

[0041] 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, it may be directly “on”, directly “connected to”, or directly “coupled to” the other element, or one or more other elements may be present between them. Conversely, when an element is described as being “directly” “on”, “directly connected to”, or “directly coupled to” another element, there are no other elements present between them.

[0042] In addition, in the following description, expressions such as upward, up, upper, downward, below, lower, lateral, side surface, forward, front, backward, rear, etc. can be expressed based on the directions shown in the accompanying drawings, and it should be noted in advance that when the direction of the object changes, it can be expressed differently.

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

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

[0045] For ease of description, spatially relative terms such as "above", "upper", "below", "lower", etc. may be used herein to describe the relationship of one element to another element as shown in the drawings. In addition to the orientation depicted in the drawings, such spatially relative terms are intended to also include different orientations of the device in use or operation. For example, if the device in the drawings is turned over, an element described as being "above" or "upper" relative to another element will then be "below" or "lower" relative to the other element. Therefore, the term "above" includes both the orientation of the above and below, depending on the spatial orientation of the device. 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 will be interpreted accordingly.

[0046] The terms used herein are only used to describe various examples and are not used to limit the present disclosure. The words "a", "an" and "the" are intended to include plural forms as well, unless the context clearly indicates otherwise. The terms "include", "comprises" and "have" specify the presence of stated features, quantities, operations, components, elements and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements and / or combinations thereof.

[0047] 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.

[0048] Herein, it is noted that the use of the term “may” with respect to an example, for example with respect to what an example may include or implement, means that there is at least one example or including or implementing this feature, and all examples are not limited thereto.

[0049] As will be apparent after understanding the present disclosure, the features of the examples described herein may be combined in various ways. In addition, although the examples described herein have multiple configurations, other configurations are also possible, as will be apparent after understanding the present disclosure.

[0050] One or more examples may provide a camera module having a structure with improved implementation freedom.

[0051] In one or more examples, the first axis or the first axis direction refers to the X axis or the X axis direction of the drawing, the second axis or the second axis direction refers to the Y axis or the Y axis direction of the drawing, and the optical axis (third axis) or the optical axis direction (third axis direction) may refer to the Z axis or the Z axis direction of the drawing. In addition, the first axis may be a direction perpendicular to the optical axis, and the second axis may be a direction perpendicular to both the optical axis and the first axis.

[0052] Figure 1 shows a perspective view of an exemplary camera module according to one or more embodiments, Figure 2 is an exploded perspective view of an exemplary camera module according to one or more embodiments, and Figure 3 is a perspective view of a camera module with a housing separated therefrom according to one or more embodiments.

[0053] According to one or more embodiments, the camera module 100 may be a folding (or foldable) camera module configured to change a path of incident light at least once. The camera module 100 according to one or more embodiments may have a relatively long total optical path length.

[0054] Reference Figure 1 , Figure 2 and Figure 3 , the camera module 100 may include a housing 1100 , a casing 1200 , a reflection module 2000 , a lens module 3000 , and an image sensor 4000 .

[0055] The housing 1100 may be a box-shaped member opened in an upward direction, and may have an internal space.

[0056] At least one of the reflection module 2000 and the lens module 3000 may be accommodated in the internal space of the housing 1100. In an embodiment, the reflection module 2000 and the lens module 3000 may be accommodated together in the internal space of the housing 1100. In another embodiment, the reflection module 2000 and the lens module 3000 may be accommodated in an additionally provided internal space of the housing 1100.

[0057] The reflection module 2000 and the lens module 3000 may move relative to the housing 1100 while being accommodated in the inner space of the housing 1100. Therefore, a plurality of ball members may be provided between the reflection module 2000 and the housing 1100 and between the lens module 3000 and the housing 1100. Details related thereto will be provided later.

[0058] The image sensor 4000 and the housing 1200 may be coupled to the outside of the housing 1100 .

[0059] The image sensor 4000 may be coupled to one side surface of the housing 1100 in the length direction. Although not shown in the drawings, the image sensor 4000 may be coupled to the housing 1100 while being mounted on a substrate.

[0060] The housing 1200 may be coupled to the housing 1100 to cover the internal space of the housing 1100. In an embodiment, the housing 1200 may cover the opened upper portion and three side surfaces of the housing 1100 except for the bottom surface of the housing 1100 and one side surface of the housing 1100 coupled to the image sensor 4000. The circuit board 6000 on which some of the driving units of the reflection module 2000 and some of the driving units of the lens module 3000 are arranged may be coupled to the remaining three side surfaces of the housing 1100 except for one side surface coupled to the image sensor 4000, and the circuit board 6000 may also be covered by the housing 1200. The components accommodated in the internal space of the housing 1100 may be separated from the outside by the housing 1200.

[0061] The housing 1200 may include an opening 1210 through which light is incident. Light reflected from an external object may be incident on the camera module 100 through the opening 1210. In an embodiment, the opening 1210 may overlap with the reflection module 2000. Therefore, light passing through the opening 1210 may be incident on the reflection module 2000.

[0062] Reference Figure 4, the reflection module 2000 may include a reflection member 2100 that reflects or refracts light to change its path. In an embodiment, the opening 1210 may overlap the reflection member 2100. The reflection member 2100 may change the path of the incident light by about 90 degrees. The incident light may enter the lens module 3000 through the reflection member 2100.

[0063] The lens module 3000 may include one or more lenses arranged in an optical axis direction (Z-axis direction). Light incident on the lens module 3000 may be refracted while passing through the one or more lenses, and may eventually reach the image sensor 4000.

[0064] The opening 1151 may be formed on one side surface of the housing 1100 in the length direction, to which the image sensor 4000 is coupled. The image sensor 4000 may be exposed to the inner space of the housing 1100 through the opening 1151 to directly face the lens module 3000. Therefore, light passing through the lens module 3000 may be incident on the image sensor 4000.

[0065] The image sensor 4000 may generate an electrical signal corresponding to light incident on the image sensor 4000 to convert the incident light into image information.

[0066] like Figure 2 As shown in FIG. 5 , the optical filter 5000 may be disposed between the lens module 3000 and the image sensor 4000. In an embodiment, the optical filter 5000 may be an infrared cut filter that blocks light in an infrared wavelength range.

[0067] The camera module 100 according to one or more embodiments may have an optical image stabilization function and an auto focus function.

[0068] The optical image stabilization function of the camera module 100 can be realized by the relative movement of the reflective member 2100 relative to the housing 1100. When performing optical image stabilization, the reflective member 2100 can be rotated by a predetermined angle based on multiple rotation axes. The multiple rotation axes can be a first axis (X axis) perpendicular to the optical axis and a second axis (Y axis) perpendicular to both the optical axis and the first axis.

[0069] The auto focus function of the camera module 100 may be implemented by relative movement of at least one lens with respect to the housing 1100. When performing the auto focus operation, the at least one lens may move in the optical axis direction.

[0070] In another embodiment, in addition to the above functions, the camera module 100 may further have a zoom function.

[0071] Hereinafter, detailed configurations of the reflection module 2000 and the lens module 3000 of the camera module 100 according to one or more embodiments will be described in detail.

[0072] Figure 4 is an exploded perspective view of a reflective module according to one or more embodiments, Figure 5 It is taken along the line I-I' Figure 1 A cross-sectional view of Figure 6 It is taken along the line II-II' Figure 1 A cross-sectional view of Figure 7 is a bottom view of a rotation holder according to one or more embodiments.

[0073] The reflection module 2000 according to one or more embodiments may include a reflection member 2100, a reflection holder 2200, and a rotation holder 2300. The reflection member 2100 may be accommodated in the reflection holder 2200, and the reflection holder 2200 may be disposed on the rotation holder 2300, and the reflection member 2100 is mounted on the reflection holder 2200. The rotation holder 2300 may be accommodated in the internal space of the housing 1100, and the reflection holder 2200 is accommodated in the rotation holder 2300.

[0074] In addition, the reflection module 2000 may include a support member 2700 which is coupled to the rotation holder 2300 and in which the reflection holder 2200 is accommodated. The support member 2700 may function as a stopper to prevent the reflection holder 2200 from being separated from the rotation holder 2300.

[0075] The support member 2700 may be coupled to both sides in the length direction of the rotating holder 2300. The support member 2700 may be formed in a "c" shape and may be coupled to the rotating holder 2300 while surrounding a portion of the reflecting holder 2200. The support member 2700 may be disposed at a certain interval from a portion of the reflecting holder 2200 surrounded by the support member 2700 so as not to interfere with the rotation of the reflecting holder 2200.

[0076] In addition, the support member 2700 may be provided in a configuration coupled with a damping member. When the reflection holder 2200 and the rotation holder 2300 rotate, the damping member may absorb vibration and reduce noise caused by collision with a corresponding member.

[0077] The reflection module 2000 may include a driving unit 2500 which generates a driving force to rotate the reflection member 2100 .

[0078] The driving unit 2500 may include a first driving unit 2510 that rotates the reflective member 2100 around a first axis (X axis) and a second driving unit 2520 that rotates the reflective member 2100 around a second axis (Y axis).

[0079] In an embodiment, the first driving unit 2510 may generate a driving force to rotate the rotating holder 2300 around a first axis (X axis). Since the reflection holder 2200 may be accommodated in the rotating holder 2300, when the rotating holder 2300 rotates, the reflection holder 2200 may rotate together with the rotating holder 2300. In addition, since the reflection member 2100 may be accommodated in the reflection holder 2200, when the rotating holder 2300 rotates, the reflection member 2100 may also rotate together with the rotating holder 2300. The second driving unit 2520 may generate a driving force to rotate the reflection holder 2200 around a second axis (Y axis). Since the reflection member 2100 may be accommodated in the reflection holder 2200, when the reflection holder 2200 rotates, the reflection member 2100 may rotate together with the reflection holder 2200.

[0080] The first driving unit 2510 may include a first driving magnet 2511 and a first driving coil 2512 arranged to face each other. In an embodiment, the first driving magnet 2511 may be provided on the rotating holder 2300, and the first driving coil 2512 may be mounted on the circuit board 6000, and may be provided on the bottom surface of the housing 1100. In a state of being provided on the rotating holder 2300, the first driving magnet 2511 may partially face the first driving coil 2512. For example, a portion of the first driving magnet 2511 may be exposed through the bottom surface of the rotating holder 2300 to face the first driving coil 2512, and the first driving magnet 2511 and the first driving coil 2512 may face each other in the first axis direction (X-axis direction).

[0081] In an example, a portion of the first driving magnet 2511 facing the first driving coil 2512 may be magnetized to sequentially have an N pole (or S pole), a neutral region, and an S pole (or N pole).

[0082] In an example, the first driving magnet 2511 may face the two first driving coils 2512. In an embodiment, the first driving magnet 2511 may have a rod shape, and the two first driving coils 2512 may be spaced apart in a length direction of the first driving magnet 2511.

[0083] The first driving magnet 2511 and the two first driving coils 2512 can generate a driving force in a direction perpendicular to the direction facing each other through electromagnetic interaction. In this example, the directions of the driving forces generated by the two first driving coils 2512 and the first driving magnet 2511 can be opposite to each other. The rotating holder 2300 can rotate around the first axis (X axis) through its combined force.

[0084] The first ball set 2410 and 2420 may be disposed between the rotation holder 2300 and the housing 1100. The first ball set 2410 and 2420 may include one rotation shaft ball 2410 and two guide balls 2420.

[0085] The rotation axis ball 2410 may provide a rotation axis of the rotation holder 2300. In an example, the rotation axis ball 2410 may form a first axis (X axis), and the first axis (X axis) may pass through the rotation axis ball 2410.

[0086] The rotating shaft ball 2410 may be received in a first guide groove G11 (see FIG. 11 ) provided in the rotating holder 2300 and the housing 1100. Figure 7 ) and the second guide groove G12 (see Fig.10 ). The rotation axis ball 2410 may be supported by at least three points in any one of the first guide groove G11 and the second guide groove G12 so that its position is fixed. The rotation axis ball 2410 may form a rotation axis while rotating at an appropriate position while being accommodated in the first guide groove G11 and the second guide groove G12.

[0087] The guide ball 2420 may be spaced apart from the rotation shaft ball 2410. The guide ball 2420 may be received in a third guide groove G21 (see FIG. 21 ) provided in the rotation holder 2300 and the housing 1100. Figure 7 ) and the fourth guide groove G22 (see Fig.10 ). One of the third guide groove G21 and the fourth guide groove G22 may have a curve or a straight line extending in the circumferential direction of a circle approximately centered on the first axis (X axis) (for example, in the rotation direction of the rotating retainer 2300). The guide ball 2420 may be supported by at least two points in one of the third guide groove G21 and the fourth guide groove G22, and may be supported by one point in the other. The guide ball 2420 may support the rotating retainer 2300 while rolling in a state accommodated in the third guide groove G21 and the fourth guide groove G22.

[0088] The first driving magnet 2511 may be disposed between the rotating shaft ball 2410 and the guide ball 2420. In an embodiment, the first driving magnet 2511 may be disposed between the rotating shaft ball 2410 and the guide ball 2420 close to the rotating shaft ball 2410 in the optical axis direction (or offset toward the rotating shaft ball 2410), and the first driving coil 2512 may also be disposed closer to the rotating shaft ball 2410 to face the first driving magnet 2511. According to this structure, as the generation point of the driving force formed by the first driving magnet 2511 and the first driving coil 2512 moves near the first axis (X axis) serving as the rotating axis, since the rolling friction of the guide ball 2420 can be relatively reduced, this may be advantageous for smooth rotation of the rotating holder 2300.

[0089] The first driving unit 2510 may include a first position sensor 2513 disposed to face the first driving magnet 2511. The first position sensor 2513 may be mounted on the circuit board 6000 together with the first driving coil 2512, and may be disposed on the bottom surface of the housing 1100.

[0090] The first position sensor 2513 may be a magnetic sensor that detects a change in magnetic flux passing through the first position sensor 2513 to sense the position of the first driving magnet 2511 .

[0091] The first position sensor 2513 may face the neutral region of the first driving magnet 2511. When the first position sensor 2513 is provided as a plurality of first position sensors 2513, at least a portion of the plurality of first position sensors 2513 may face the neutral region of the first driving magnet 2511.

[0092] In addition, the first driving unit 2510 may include a first yoke 2515 disposed to face the first driving magnet 2511. The first yoke 2515 may be disposed to cover the outer side of the circuit board 6000. Specifically, the first yoke 2515 may be disposed to cover a surface of the circuit board 6000 opposite to a surface on which the first driving coil 2512 and the first position sensor 2513 are mounted.

[0093] The first yoke 2515 may be formed of a magnetic material. The first yoke 2515 may gather the magnetic flux of the first drive magnet 2511, and the first yoke 2515 may generate a magnetic attraction force together with the first drive magnet 2511. In an example, the first yoke 2515 may have a function of pulling the yoke. Due to the magnetic attraction force of the first yoke 2515 and the first drive magnet 2511, the rotating retainer 2300 may be supported in close contact with the housing 1100. The magnetic attraction force may be generated in the first axial direction, which may be the direction in which the first yoke 2515 and the first drive magnet 2511 face each other, and the rotating retainer 2300 may be supported by the housing 1100 in the first axial direction.

[0094] The second driving unit 2520 may include a second driving magnet 2521 and a second driving coil 2522 arranged to face each other. In an embodiment, the second driving magnet 2521 may be provided on the reflection holder 2200, and the second driving coil 2522 may be mounted on the circuit board 6000, and may be provided on one side surface of the housing 1100. The second driving magnet 2521 may face the second driving coil 2522 in a state of being provided on the reflection holder 2200. Therefore, the reflection holder 2200 may include a portion (hereinafter referred to as an extension portion 2210) extending between the rotation holder 2300 and one side surface of the housing 1100. The second driving magnet 2521 may be provided in the extension portion 2210, and the second driving magnet 2521 and the second driving coil 2522 may face each other in the optical axis direction (Z-axis direction).

[0095] The second driving magnet 2521 may be magnetized so that a surface thereof facing the second driving coil 2522 has an N pole (or S pole), a neutral region, and an S pole (or N pole) in sequence.

[0096] The second driving magnet 2521 may face the two second driving coils 2522. In an embodiment, the second driving magnet 2521 may have a rod shape, and the two second driving coils 2522 may be spaced apart in a length direction of the second driving magnet 2521.

[0097] The second driving magnet 2521 and the two second driving coils 2522 can generate a driving force in a direction perpendicular to the direction facing each other through electromagnetic interaction. In this example, the directions of the driving forces formed by the two second driving coils 2522 and the second driving magnet 2521 can be opposite to each other. The reflection holder 2200 can rotate around the second axis (Y axis) based on its combined force.

[0098] In another embodiment, the position of the second drive unit 2520 can be changed. For example, the second drive magnet 2521 and the second drive coil 2522 can be arranged to face each other in the second axis (Y axis) direction. In this example, the position of the second drive magnet 2521 and the second drive coil 2522 and the position of the second position sensor 2523 and the position of the second yoke 2525 to be described later can also be changed.

[0099] The second ball group 2430 may be disposed between the reflection holder 2200 and the rotation holder 2300. The second ball group 2430 may include two ball members 2430 spaced apart in the second axis (Y-axis) direction.

[0100] The two ball members 2430 may provide a rotation axis of the reflection holder 2200. For example, the two ball members 2430 may form a second axis (Y axis), and the second axis (Y axis) may pass through the two ball members 2430.

[0101] The two ball members 2430 may be accommodated in the fifth guide groove G31 and the sixth guide groove G32 provided in the reflection holder 2200 and the rotation holder 2300. The two ball members 2430 may be supported by at least three points in any one of the fifth guide groove G31 and the sixth guide groove G32 so that their positions are fixed. The two ball members 2430 may form a rotation axis while rotating in an appropriate position in a state of being accommodated in the fifth guide groove G31 and the sixth guide groove G32.

[0102] The second driving unit 2520 may include a second position sensor 2523 disposed to face the second driving magnet 2521. The second position sensor 2523 may be mounted on the circuit board 6000 together with the second driving coil 2522, and may be disposed on one side surface of the housing 1100.

[0103] The second position sensor 2523 may be a magnetic sensor that detects a change in magnetic flux passing through the second position sensor 2523 to sense the position of the second driving magnet 2521 .

[0104] The second position sensor 2523 may face the neutral region of the second driving magnet 2521. When the second position sensor 2523 is provided as a plurality of second position sensors 2523, at least a portion of the plurality of second position sensors 2523 may face the neutral region of the second driving magnet 2521.

[0105] In addition, the second driving unit 2520 may include a second yoke 2525 disposed to face the second driving magnet 2521. The second yoke 2525 may be disposed to cover the outer side of the circuit board 6000. Specifically, the second yoke 2525 may be disposed to cover the surface of the circuit board 6000 opposite to the surface on which the second driving coil 2522 and the second position sensor 2523 are mounted.

[0106] The second yoke 2525 may be formed of a magnetic material, and may concentrate the magnetic flux of the second driving magnet 2521 .

[0107] The reflection holder 2200 may be supported on the rotation holder 2300. In an embodiment, the reflection holder 2200 may include a traction yoke (or a first magnetic material) 2550. The traction yoke 2550 may be disposed to face the first drive magnet 2511 disposed on the rotation holder 2300. The traction yoke 2550 may generate a magnetic attraction force together with the first drive magnet 2511. Due to the magnetic attraction force of the traction yoke 2550 and the first drive magnet 2511, the reflection holder 2200 may be supported in close contact with the rotation holder 2300. The magnetic attraction force may be generated in the optical axis direction, which may be the direction in which the traction yoke 2550 and the first drive magnet 2511 face each other, and the reflection holder 2200 may be supported on the rotation holder 2300 in the optical axis direction.

[0108] Figure 8 is an exploded perspective view of a housing and a lens module according to one or more embodiments, and Fig. 9 is an exploded perspective view of a lens module according to one or more embodiments.

[0109] The lens module 3000 according to one or more embodiments may include at least one lens, a lens barrel 3100, and a lens holder 3200. The at least one lens may be accommodated in the lens barrel 3100 in the optical axis direction, and the lens barrel 3100 may be accommodated in the lens holder 3200, wherein the at least one lens is accommodated in the lens barrel 3100. The lens holder 3200 may be accommodated in the internal space of the housing 1100, wherein the lens barrel 3100 is accommodated in the lens holder 3200. In an embodiment, the lens barrel 3100 and the lens holder 3200 may be separate components. In another embodiment, the lens barrel 3100 and the lens holder 3200 may be integrally formed.

[0110] The lens module 3000 may include a third driving unit 3500 that generates a driving force to move the lens holder 3200 in the optical axis (Z axis) direction. Since the lens barrel 3100 may be accommodated in the lens holder 3200, the lens barrel 3100 may move together with the lens holder 3200. In addition, since at least one lens may be accommodated in the lens barrel 3100, when the lens holder 3200 moves, the at least one lens may also move together with the lens holder 3200.

[0111] The third driving unit 3500 may include a third driving magnet 3510 and a third driving coil 3520 arranged to face each other. In an embodiment, the third driving magnet 3510 may be provided on one side surface or both side surfaces of the lens holder 3200, and the third driving coil 3520 may be mounted on the circuit board 6000 to be provided on one side surface or both side surfaces of the housing 1100. The third driving magnet 3510 and the third driving coil 3520 may face each other in the second axis (Y axis) direction.

[0112] The third driving magnet 3510 may be magnetized such that a surface thereof facing the third driving coil 3520 has an N pole (or an S pole), a neutral region, and an S pole (or an N pole) in sequence.

[0113] The third driving magnet 3510 may face one third driving coil 3520. The third driving magnet 3510 and the third driving coil 3520 may generate a driving force in a direction (optical axis direction) perpendicular to the direction facing each other through electromagnetic interaction.

[0114] The third ball group 3400 may be disposed between the lens holder 3200 and the housing 1100. The third ball group 3400 may include at least three ball members. In an embodiment, the third ball group 3400 may include four ball members.

[0115] Four ball members may be spaced apart in the width direction of the lens holder 3200 to support both sides of the lens holder 3200. In an embodiment, the first side and the second side of the lens holder 3200 may be supported by two ball members, respectively. In addition, in an example, two ball members provided on one side or the other side of the lens holder 3200 may be spaced apart in the optical axis direction.

[0116] The four ball members may be accommodated in the seventh guide groove G41 and the eighth guide groove G42 provided in the lens holder 3200 and the housing 1100. The seventh guide groove G41 and the eighth guide groove G42 may have a straight line extending in the optical axis direction. At least one of the four ball members may be supported by at least two points in any one of the seventh guide groove G41 and the eighth guide groove G42. The remaining ball members may be supported by at least one point in the seventh guide groove G41 and the eighth guide groove G42. The four ball members may roll while being accommodated in the seventh guide groove G41 and the eighth guide groove G42, while guiding the movement of the lens holder 3200 in the optical axis direction.

[0117] The third driving unit 3500 may include a third position sensor 3530 disposed to face the third driving magnet 3510. The third position sensor 3530 may be mounted on the circuit board 6000 together with the third driving coil 3520 and disposed on one or both side surfaces of the housing 1100.

[0118] The third position sensor 3530 may be a magnetic sensor that detects a change in magnetic flux passing through the third position sensor 3530 to sense the position of the third driving magnet 3510 .

[0119] The third position sensor 3530 may face the neutral region of the third driving magnet 3510. When the third position sensor 3530 is provided as a plurality of third position sensors 3530, at least a portion of the plurality of third position sensors 3530 may face the neutral region of the third driving magnet 3510.

[0120] In addition, the third driving unit 3500 may include a third yoke 3550 disposed to face the third driving magnet 3510. The third yoke 3550 may be disposed to cover the outer side of the circuit board 6000. Specifically, the third yoke 3550 may be disposed to cover the surface of the circuit board 6000 opposite to the surface on which the third driving coil 3520 and the third position sensor 3530 are mounted.

[0121] The third yoke 3550 may be formed of a magnetic material, and may concentrate the magnetic flux of the third driving magnet 3510 .

[0122] The lens holder 3200 may be supported on the housing 1100 . In an embodiment, the lens holder 3200 may include a pulling magnet (or a second magnetic material) 3610 , and the housing 1100 may include a pulling yoke (or a third magnetic material) 3620 .

[0123] The traction magnet 3610 and the traction yoke 3620 may be arranged to face each other. The traction magnet 3610 and the traction yoke 3620 may generate a magnetic attraction force. Due to the magnetic attraction force of the traction magnet 3610 and the traction yoke 3620, the lens holder 3200 may be supported in close contact with the housing 1100. The magnetic attraction force may be generated in a first axial direction in which the traction magnet 3610 and the traction yoke 3620 face each other, and the lens holder 3200 may be supported by the housing 1100 in the first axial direction. In another embodiment, the positions of the traction magnet 3610 and the traction yoke 3620 may be changed.

[0124] Fig.10 is an exploded perspective view of a housing and a circuit board according to one or more embodiments.

[0125] The circuit board 6000 on which the first driving unit 2510, the second driving unit 2520, and the third driving unit 3500 are partially arranged may be coupled to the housing 1100. In an example, the circuit board 6000 may be disposed on a portion of the bottom surface and three side surfaces of the housing 1100.

[0126] The first drive unit 2510, the second drive unit 2520, and the third drive unit 3500, which respectively include the first drive coil 2512, the second drive coil 2522, and the third drive coil 3520, may be partially arranged on the circuit board 6000. The housing 1100 may include openings 1152, 1153, and 1154 on a surface coupled to the circuit board 6000, so that the first drive coil 2512, the second drive coil 2522, and the third drive coil 3520 are exposed to the inner space of the housing 1100. Therefore, the first drive coil 2512, the second drive coil 2522, and the third drive coil 3520 may directly face the first drive magnet 2511, the second drive magnet 2521, and the third drive magnet 3510 arranged in the inner space of the housing 1100, respectively.

[0127] In an embodiment, the first drive coil 2512, the second drive coil 2522, and the third drive coil 3520 may be arranged on one circuit board 6000, and the circuit board 6000 may be formed of a flexible material so that at least a portion thereof may be bent. In another embodiment, the first drive coil 2512, the second drive coil 2522, and the third drive coil 3520 may be arranged on different circuit boards and may be coupled to the housing 1100.

[0128] In the example, a space for arranging components involved in driving the reflection module can be ensured to improve the degree of freedom of implementation. In particular, when a space for arranging components is ensured, the components can be arranged to achieve the advantage of smooth operation of the reflection module. In addition, it can also have the effect of reducing the size of the camera module, simplifying its process, and reducing its cost.

[0129] Although specific examples have been shown and described above, it will be apparent after understanding the present disclosure that various changes in form and detail may be made in these examples without departing from the spirit and scope of the claims and their equivalents. The examples described herein are considered to be illustrative only and not for limiting purposes. The description of the features or aspects in each example is considered to be 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 combined in different ways and / or replaced or supplemented by other components or their equivalents. Therefore, the scope of the present disclosure is not limited by specific embodiments, but by the claims and their equivalents, and all changes within the scope of the claims and their equivalents will be interpreted as included in the present disclosure.

Claims

1. A reflection module, comprising: A housing having an internal space; a rotating holder accommodated in the inner space of the housing; a reflective holder on which a first magnetic material and a reflective member are disposed, the reflective member being configured to change a path of incident light; as well as a driving unit configured to generate a driving force to rotate the reflecting member, The driving unit includes a first driving magnet disposed on the rotation holder and a first driving coil disposed on the housing, and The first driving magnet faces the first driving coil in a first direction, and faces the first magnetic material in a second direction different from the first direction.

2. The reflection module according to claim 1, wherein: The reflection holder is arranged on the rotation holder.

3. The reflection module according to claim 1, wherein: The first direction in which the first driving magnet and the first driving coil face each other and the second direction in which the first driving magnet and the first magnetic material face each other are perpendicular to each other.

4. The reflection module according to claim 1, wherein: The first driving coil includes two coils spaced apart in a length direction of the first driving magnet.

5. The reflection module according to claim 1, further comprising a first ball group disposed between the housing and the rotation holder, in, The first ball group includes a rotation axis ball forming a first axis which is a rotation axis of the rotation holder, and a plurality of guide balls spaced apart from the rotation axis ball and configured to support rotation of the rotation holder.

6. The reflection module according to claim 5, wherein: The first drive magnet and the first drive coil are disposed between the rotation shaft ball and the plurality of guide balls to be biased toward the rotation shaft ball.

7. The reflection module according to claim 1, wherein: The driving unit further includes a second driving magnet disposed on the reflection holder and a second driving coil disposed on the housing.

8. The reflection module according to claim 7, wherein: The reflection holder includes an extending portion extending between the rotation holder and the housing, and the second driving magnet is provided on the extending portion.

9. The reflection module according to claim 1, further comprising a second ball group disposed between the rotation holder and the reflection holder, in, The second ball set includes two ball members spaced apart in the direction of a second axis, which is a rotation axis of the reflector holder.

10. The reflection module according to claim 1, wherein: The rotating holder is supported by the housing in the first direction, and the reflecting holder is supported by the rotating holder in the second direction.

11. A camera module, comprising: A housing having an internal space; a reflection module accommodated in the internal space of the housing and including a reflection member configured to change a path of incident light; as well as a lens module, housed in the inner space of the housing and comprising at least one lens arranged in a direction parallel to the optical axis, The reflection module further comprises a reflection holder and a rotation holder, the reflection component is arranged on the reflection holder, the reflection holder is arranged on the rotation holder, and A magnet is provided on the rotating holder, and the magnet is configured to generate an attractive force relative to the reflecting holder in a first direction parallel to the optical axis, and configured to generate an attractive force relative to the shell in a second direction, and the second direction is parallel to a first axis perpendicular to the optical axis.

12. The camera module according to claim 11, wherein: The magnet faces the first magnetic material in the first direction and faces the first yoke in the second direction.

13. The camera module according to claim 12, wherein: The first magnetic material is a pulling yoke disposed on the reflective holder.

14. The camera module according to claim 12, wherein: The magnet faces the coil in the second direction.

15. The camera module according to claim 11, wherein: The rotation holder is configured to rotate about the first axis, wherein a rotation shaft ball forming the first shaft and a plurality of guide balls spaced apart from the rotation shaft ball are provided between the rotation holder and the housing, and The magnet is disposed between the rotation axis ball and the plurality of guide balls so as to be biased toward the rotation axis ball in the direction of the optical axis.

16. The camera module according to claim 11, wherein: The reflective holder is configured to rotate about a second axis that is perpendicular to the optical axis and the first axis, and A plurality of ball members spaced apart in the direction of the second axis are provided between the reflection holder and the rotation holder.

17. The camera module according to claim 11, wherein: The lens module is configured to move in the direction of the optical axis, and A plurality of ball members are provided between the lens module and the housing to support movement of the lens module in the direction of the optical axis.

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