Reflection module and camera module including same

Abstract

The reflection module includes: a housing having an internal space; a rotation guide portion provided in the internal space and configured to rotate about a first axis with respect to the housing; a reflecting member holder including a reflecting member and supported by the rotation guide portion; and a damper protruding from a bottom surface of the housing toward the interior space, in which the damper includes a first damper disposed adjacent to the first shaft and a second damper disposed in a position spaced apart from the first damper.

Description

[0001] Cross Reference to Related Applications

[0002] This application claims the benefit of priority to Korean Patent Application No. 10-2024-0073891, filed on June 5, 2024, Korean Patent Application No. 10-2024-0138443, filed on October 11, 2024, and Korean Patent Application No. 10-2025-0060356, filed on May 9, 2025, in the Korean Intellectual Property Office, the disclosures of which are incorporated herein by reference in their entireties for all purposes. TECHNICAL FIELD

[0003] The following disclosure relates to a reflection module and a camera module including the same. BACKGROUND

[0004] Camera modules used in mobile devices have been manufactured to have performance comparable to that of typical cameras.

[0005] For example, a camera module used in a mobile device can include a reflection member. Since the reflection member bends the path of light, it is possible to sufficiently lengthen the optical path without increasing the thickness of the mobile device, thereby improving the performance of the camera module.

[0006] The reflection member can be provided to be rotatable when optical image stabilization (OIS) is performed on the camera module. For example, the rotation of the reflection member can be supported by a ball support. The ball support functions essentially like a wheel and can assist the movement of the reflection member with a relatively small force, but depending on the position in which the ball support is located, the ball support can hinder the driving.

[0007] Meanwhile, components constituting the camera module can generate noise while moving due to internal and external factors.

[0008] The above information is presented as background information only to assist with an understanding of the present disclosure. No determination has been made, and no assertion is made, as to whether any of the above might be applicable as prior art with regard to the present disclosure. SUMMARY

[0009] The Summary is presented to introduce a selection of concepts in a simplified form. The concepts described in this Summary are further described below in the DETAILED DESCRIPTION. This Summary is not intended to identify key or essential features of the claimed subject matter, nor is it intended to be used to determine the scope of the claimed subject matter.

[0010] In general aspects, a reflection module includes a housing having an internal space, a rotation guide disposed in the internal space and configured to rotate with respect to the housing about a first axis, a reflection member support including a reflection member and supported by the rotation guide, and a damper protruding from a bottom surface of the housing toward the internal space, wherein the damper includes a first damper disposed adjacent to the first axis and a second damper disposed in a position spaced apart from the first damper.

[0011] The reflection module can further include a pivot ball disposed between the housing and the rotation guide, the first axis passing through the pivot ball, and a plurality of guide balls disposed in positions between the housing and the rotation guide spaced apart from the pivot ball. A distance between the pivot ball and the first damper can be less than a distance between the pivot ball and the plurality of guide balls, and a distance between the pivot ball and the second damper can be greater than the distance between the pivot ball and the plurality of guide balls.

[0012] The rotation guide can include a damper accommodation portion passing through the rotation guide in a direction parallel to the first axis, and the first damper can be disposed in the damper accommodation portion.

[0013] The damper accommodation portion can have a width that increases away from the first axis at least in a portion.

[0014] The damper accommodation portion can include a first side surface facing the first damper in a first direction, and a second side surface facing the first damper in a second direction perpendicular to the first direction, wherein the first direction and the second direction are directions perpendicular to the first axis.

[0015] The first side surface can include a stepped portion formed to protrude toward the first damper, and the damper accommodation portion can have a width that narrows once in the stepped portion.

[0016] The first damper can contact the first side surface on an outer side of the stepped portion in a radial direction of a circle centered on the first axis when the rotation guide rotates based on the first axis.

[0017] The first damper can face the reflection member support in a direction of the first axis.

[0018] The rotation guide can protrude toward the housing and include a first protrusion facing the second damper in a radial direction of a circle centered on the first axis.

[0019] Opposing surfaces of the second damper and the first protrusion can be curved.

[0020] The opposing surfaces of the second damper and the first protrusion can each include a portion of a circle having an arbitrary radius centered on the first axis.

[0021] The first damper and the second damper can each include a plurality of dampers spaced apart from each other in a direction perpendicular to the first axis.

[0022] The reflection module can further include an auxiliary damper disposed between the second dampers and facing the rotation guide portion, wherein the rotation guide portion can include a second protrusion facing the auxiliary damper in a radial direction of a circle centered on the first axis.

[0023] Opposite surfaces of the auxiliary damper and the second protrusion can be curved.

[0024] The camera module can include a reflection module; and a lens module including a plurality of lenses disposed in an optical axis direction and configured to be movable in the optical axis direction.

[0025] The reflection module can be configured to be rotatable about a first axis and a second axis perpendicular to the first axis, and both the first axis and the second axis can be perpendicular to the optical axis direction.

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

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

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

[0029] Figure 3 is a schematic exploded perspective view of an exemplary camera module according to one or more embodiments.

[0030] Figure 4A is a cross-sectional view taken along line I-I' of Figure 1

[0031] Figure 4B is a cross-sectional view taken along line II-II' of Figure 1

[0032] Figure 5 is a fully exploded perspective view of a camera module according to an embodiment of the disclosure.

[0033] Figure 6 is a perspective view of a housing according to an embodiment of the disclosure.

[0034] Figure 7 is a perspective view of a main substrate according to an embodiment of the disclosure.

[0035] Figure 8 is a perspective view showing a main substrate coupled to a housing according to an embodiment of the disclosure.​​

[0036] Figure 9 is a perspective view of a reflection module according to an embodiment of the present disclosure.

[0037] Figure 10A is an exploded perspective view of a reflection module according to an embodiment of the present disclosure.

[0038] Figure 10B is a bottom exploded perspective view of a reflection module according to an embodiment of the present disclosure.

[0039] Figure 11 is a sectional view taken along line III-III' of Figure 9

[0040] Figure 12 is a bottom perspective view of a reflection module according to an embodiment of the present disclosure.

[0041] Figure 13 shows an arrangement of a second ball member supporting rotation of a rotation guide portion.

[0042] Figure 14 is a plan view showing an appearance of a rotation guide portion arranged in a housing.

[0043] Figure 15 is an enlarged view of a region A (first damper) of Figure 14

[0044] Figure 16 is an enlarged view of a region B (second damper) of Figure 14

[0045] Figure 17A and Figure 17B is a view showing a rotation state of a rotation guide portion.

[0046] Figure 18 is a view showing a configuration in which an auxiliary damper is additionally provided.

[0047] Figure 19 is a sectional view taken along line IV-IV' of Figure 9

[0048] Figure 20 is an exploded perspective view of a lens module according to an embodiment of the present disclosure.

[0049] Figure 21 is a bottom exploded perspective view of a lens module according to an embodiment of the present disclosure.

[0050] ​​​​Throughout the drawings and specification, like reference numerals will be used to refer to like elements throughout the specification and figures. 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

[0051] Hereinafter, while 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.

[0052] The following detailed description is provided to help the reader obtain a thorough 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 an understanding of the present disclosure. For example, the order or sequence of the operations within the methods described herein is merely illustrative and not limited to the order or sequence described herein, except where the order or sequence is essential to the operation of the methods, and can be changed, which will be apparent to those skilled in the art after an understanding of the present disclosure. Also, descriptions of features that are well known in the art can be omitted for the sake of clarity and conciseness.

[0053] 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 scope of the methods, devices, and / or systems described herein to those skilled in the art after an understanding of the present disclosure. Accordingly, the examples described herein are not intended to limit the scope of the methods, devices, and / or systems described herein, but rather are intended to provide an example of the many possible ways of implementing the methods, devices, and / or systems described herein.

[0054] Throughout the specification, when an element such as a layer, region, or substrate is referred to as being "on" or "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, no other elements are interposed therebetween.

[0055] As used herein, the term "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.

[0056] Although terms such as "first," "second," and "third" can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. Rather, these terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, terms referring to a first element, a first component, a first region, a first layer or a first section in examples can also be referred to as a second element, a second component, a second region, a second layer or a second section.

[0057] Spatially relative terms, such as "on", "above", "below", "bottom", "top", "side", "upper", "lower", and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. Spatially relative terms can be intended to encompass different orientations of a device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, elements described as "above" or "on" other elements or features would then be oriented "below" or "on" the other elements or features. Thus, the term "above" can encompass both an orientation of above and below. The device can be otherwise oriented (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0058] 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 specifically intended to be open-ended. These terms mean that a process, method, article, composition or apparatus that "comprises", "comprising", "includes" or "including" something is not limited to the features, articles, components or steps enumerated, but can include other features, articles, components, steps and the like.

[0059] 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.

[0060] It should be noted that, in this document, the term "may" is used to mean that one or more examples include something. The term "may" is used in conjunction with, for example, examples that "may include" or "may implement" something to indicate that one or more examples of the example include the described feature but the example does not necessarily include the described feature. By contrast, in some examples, the term "can" is used to mean that one or more examples optionally include something that can or cannot be present.

[0061] Features of the examples described herein can be combined in a variety of ways as will be apparent following the disclosure. Also, although examples described herein have a variety of configurations, other configurations are possible in light of the disclosure.

[0062] One or more examples relate to a reflection module and a camera module including the same, and can be applied to a mobile device. For example, the mobile device can be a portable electronic device such as a smart phone, a tablet personal computer (PC), or the like.

[0063] The present disclosure aims to solve the above-described problems in a camera module having a reflection member. Specifically, the present disclosure aims to provide a reflection module having improved driving stability and noise reduction, and a camera module including the same.

[0064] According to embodiments of the present disclosure, driving stability of a reflection module and shake correction performance (or optical image stabilization) of a camera module can be improved.

[0065] Figure 1 is a perspective view of an exemplary camera module according to one or more embodiments, Figure 2 is an internal perspective view of an exemplary camera module according to one or more embodiments, Figure 3 is a schematic exploded perspective view of an exemplary camera module according to one or more embodiments, Figure 4A is a cross-sectional view taken along Figure 1 line I-I' of Figure 4B is a cross-sectional view taken along Figure 1 line II-II' of Figure 5 is a fully exploded perspective view of an exemplary camera module according to one or more embodiments.

[0066] The camera module 100 according to one or more embodiments can include a reflection module 2000, a lens module 3000, and an image sensor module 4000.

[0067] The reflection module 2000, the lens module 3000, and the image sensor module 4000 are disposed in the housing 1100, and the outer case 1300 is coupled to the housing 1100 to cover a portion of the housing 1100.

[0068] Light incident on the camera module 100 can change a traveling direction in the reflection module 2000. The reflection module 2000 includes a reflection member 2100 that reflects light, thereby changing a path of the light.

[0069] Referring to Figure 2 and Figure 4AThe reflection member 2100 can be configured to change light incident in the thickness direction (Y-axis direction) of the camera module 100 to the length direction (Z-axis direction) of the camera module 100.

[0070] The lens module 3000 can include a plurality of lenses that refract light. The plurality of lenses can be disposed in the length direction (Z-axis direction) of the camera module 100. That is, the optical axis (Z-axis) is formed in parallel to the length direction (Z-axis direction) of the camera module 100.

[0071] Referring to Figure 3 The image sensor module 4000 can include an image sensor 4100 and a printed circuit board 4200 on which the image sensor 4100 is mounted.

[0072] Light incident on the camera module 100 can pass through the lens module 3000 to be incident on the image sensor 4100, and then be converted into a corresponding electrical signal in the image sensor 4100.

[0073] One or more baffles (not shown) can be disposed between the lens module 3000 and the image sensor 4100 to reduce flare phenomena. The baffles can be arranged in the internal space of the housing 1100 described below.

[0074] In addition, the image sensor module 4000 can further include a filter 4300 disposed between the lens module 3000 and the image sensor 4100 and filtering light in a specific wavelength range. In an example, the filter 4300 can be an infrared cut filter that filters light in an infrared wavelength range.

[0075] Figure 6 is a perspective view of a housing according to one or more embodiments.

[0076] Referring to Figure 6 The housing 1100 has a rectangular box shape having an open top and an internal space. As described above, the reflection module 2000, the lens module 3000, and the image sensor module 4000 can be sequentially arranged in the traveling direction of incident light.

[0077] For example, the reflection module 2000 and the lens module 3000 can be accommodated in the internal space of the housing 1100, and the image sensor module 4000 can be disposed on the outer surface of the housing 1100 such that the imaging surface of the image sensor 4100 faces the internal space.

[0078] The structure in which the optical modules constituting the camera module 100 are arranged together in one housing 1100 has the advantage of facilitating assembly and facilitating optical axis (Z-axis) alignment.

[0079] Meanwhile, the reflection module 2000, the lens module 3000, and the image sensor module 4000 can each be accommodated in a separate housing, and the housings can also be connected to each other.

[0080] The reflection module 2000 and the lens module 3000 are disposed to be movable in the housing 1100. For example, in the internal space of the housing 1100, the lens module 3000 moves in the optical axis direction (Z-axis direction), and the reflection module 2000 rotates with two axes (X-axis and Y-axis) perpendicular to the optical axis (Z-axis) as a rotation axis.

[0081] The camera module 100 includes a driving unit that provides a driving force to move the reflection module 2000 and the lens module 3000.

[0082] The driving unit includes a magnet and a coil, and the coil can be mounted and disposed on a printed circuit board (hereinafter referred to as a main substrate) 5000.

[0083] Figure 7 is a perspective view of a main substrate according to one or more embodiments, and Figure 8 is a perspective view illustrating a main substrate coupled to a housing according to one or more embodiments.

[0084] According to an embodiment, the main substrate 5000 can be disposed on a plurality of surfaces of the housing 1100. Referring to Figure 8 , the main substrate 5000 can be disposed to cover a side surface of the housing 1100.

[0085] The housing 1100 can include through holes 1101, 1103, 1105, and 1107, and the driving coil mounted on the main substrate 5000 can be exposed to the internal space through the through holes 1101, 1103, and 1105. Also, the imaging surface of the image sensor 4100 can also be exposed to the internal space through the through hole 1107.

[0086] The case 1300 can be coupled to the housing 1100 to cover the open upper portion of the housing 1100. In an embodiment, the case 1300 can include a metal material that serves as a shield.

[0087] The case 1300 can have a function of protecting components disposed in the internal space of the housing 1100. Also, the case 1300 is formed of a material including a metal and serves to shield electromagnetic waves.

[0088] The case 1300 can include an opening 1310.

[0089] The reflection module 2000 can be disposed to overlap the opening 1310 and be exposed to the outside through the opening 1310. Thus, light can be incident on the reflection module 2000 through the opening 1310.

[0090] The camera module 100 according to one or more embodiments can have an optical image stabilization (OIS) function and an auto focus (AF) function.

[0091] In an embodiment, the reflection module 2000 can be disposed to be rotatable when compensating for shaking, and the lens module 3000 can be disposed to be movable when adjusting a focus. The movements of the reflection module 2000 and the lens module 3000 can both be relative movements with respect to the housing 1100.

[0092] The camera module 100 according to one or more embodiments can also have a zoom function. For the zoom function, the lens module 3000 can include a plurality of lens barrels on which one or more lenses are mounted.

[0093] Figure 9 is a perspective view of a reflection module according to an embodiment of the disclosure, Figure 10A is an exploded perspective view of a reflection module according to an embodiment of the disclosure, Figure 10B is a bottom exploded perspective view of a reflection module according to an embodiment of the disclosure, and Figure 11 is a sectional view taken along Figure 9 line III-III' of FIG. 3.

[0094] According to an embodiment, the reflection module 2000 can include a reflection member support 2200 on which a reflection member 2100 is disposed, and a rotation guide portion 2300 on which the reflection member support 2200 is supported.

[0095] The reflection member support 2200 can be rotatably supported by the rotation guide portion 2300, and the rotation guide portion 2300 can be rotatably supported by the housing 1100.

[0096] According to an embodiment, the reflection member 2100 can be disposed as a prism including an incident surface 2110, a reflection surface 2120, and an exit surface 2130. However, this is merely an example, and in another example, the reflection member 2100 can be disposed as a mirror.

[0097] When a direction in which light is incident is defined as a first optical axis OAl direction, the first optical axis OAl can pass through a center of the incident surface 2110. Also, when a direction of an optical axis (Z-axis direction) formed by the lens module 3000 is defined as a second optical axis OA2 direction, the second optical axis OA2 can pass through a center of the exit surface 2130.

[0098] The reflection surface 2120 can be disposed obliquely with respect to the incidence surface 2110 and the exit surface 2130. In an example, the first optical axis OA1 and the second optical axis OA2 can intersect substantially at the center of the reflection surface 2120. The reflection surface 2120 can change the traveling direction of light incident in the direction of the first optical axis OA1 to the direction of the second optical axis OA2.

[0099] According to an embodiment, the incidence surface 2110 and the exit surface 2130 of the reflection member 2100 can have a curvature. For example, referring to Figure 11 The incidence surface 2110 of the reflection member 2100 can have a convex shape toward the object side, and the exit surface 2130 of the reflection member 2100 can have a concave shape toward the image side. The incidence surface 2110 and the exit surface 2130 can have shapes different from the shapes presented.

[0100] Since the incidence surface 2110 and the exit surface 2130 can have a curvature, the reflection member 2100 can operate as a lens.

[0101] The spacers SP1 and SP2 can be disposed on the object side of the incidence surface 2110 and the image side of the exit surface 2130, respectively.

[0102] The spacers SP1 and SP2 can include an opening through which light passes and a light-blocking portion coated in black along the periphery of the opening. The light-blocking portion can block light from passing through the respective regions by covering the periphery of the effective regions of the incidence surface 2110 and the exit surface 2130.

[0103] According to an embodiment, the reflection module 2000 can be disposed rotatable about two axes (X-axis and Y-axis) perpendicular to the optical axis (Z-axis).

[0104] In an embodiment, the reflection member support 2200 can be rotated about the first axis (X-axis) while being supported by the rotation guide 2300, and the rotation guide 2300 can be rotated about the second axis (Y-axis) together with the reflection member support 2200 while being supported by the housing 1100.

[0105] The two rotation axes (X-axis and Y-axis) can be perpendicular to each other.

[0106] The first ball member 2410 can be disposed between the reflection member support 2200 and the rotation guide 2300.

[0107] The first ball member 2410 can separate the reflection member support 2200 and the rotation guide 2300, and support the rotation of the reflection member support 2200 with respect to the rotation guide 2300.

[0108] In an embodiment, the first ball member 2410 can include a plurality of balls, e.g., two balls, spaced apart from each other in the first axis direction (X axis direction) with the reflection member 2100 interposed therebetween.

[0109] The first ball member 2410 can form a first axis (X axis). For example, a virtual line connecting the two balls can be the first axis (X axis).

[0110] The first ball member 2410 can rotate while being fixed in place with respect to the reflection member bracket 2200 and the rotation guide 2300.

[0111] Accommodation recesses can be provided in the reflection member bracket 2200 and the rotation guide 2300 to accommodate the first ball member 2410.

[0112] The reflection member bracket 2200 can be provided with first accommodation recesses 2221 spaced apart in the first axis direction (X axis direction), and the rotation guide 2300 can be provided with second accommodation recesses 2321 at positions facing the first accommodation recesses 2221. The first accommodation recesses 2221 and the second accommodation recesses 2321 can face each other in the optical axis direction (Z axis direction).

[0113] The first ball member 2410 can be accommodated between the first accommodation recesses 2221 and the second accommodation recesses 2321, respectively.

[0114] A portion of the first ball member 2410 can be accommodated in the first accommodation recesses 2221, and another portion of the first ball member 2410 can be accommodated in the second accommodation recesses 2321.

[0115] The first ball member 2410 can be supported at three points or two points by the first accommodation recesses 2221 and the second accommodation recesses 2321.

[0116] In an embodiment, the first accommodation recesses 2221 and the second accommodation recesses 2321 can include three inclined surfaces so that the first ball member 2410 can rotate in place. In addition, the first accommodation recesses 2221 or the second accommodation recesses 2321 can include two inclined surfaces to overcome defects due to tolerances.

[0117] The reflection member bracket 2200 can be closely supported on the rotation guide 2300 by magnetic force (magnetic attraction).

[0118] The reflection module 2000 can include a pair of magnetic members provided in the reflection member bracket 2200 and the rotation guide 2300. Referring to Figure 11A pair of magnetic members can include a traction magnet 2340 disposed in the rotation guide portion 2300 and a traction yoke 2240 disposed in the reflection member support 2200. The traction yoke 2240 can be inserted into the reflection member support 2200 and disposed integrally with the reflection member support 2200.

[0119] The traction magnet 2340 and the traction yoke 2240 can be disposed to face each other and generate magnetic attraction in a direction in which they face each other. The traction magnet 2340 and the traction yoke 2240 can face the optical axis direction (Z-axis direction) and generate magnetic attraction in the optical axis direction (Z-axis direction). By the magnetic attraction, the reflection member support 2200 can be closely supported on the rotation guide portion 2300 in the optical axis direction (Z-axis direction).

[0120] In an example, a direction in which the reflection member support 2200 is supported by the rotation guide portion 2300 can match a direction in which the reflection member support 2200 and the rotation guide portion 2300 face each other, with the first ball member 2410 interposed therebetween. Accordingly, by the magnetic attraction, the first ball member 2410 can not be detached from between the reflection member support 2200 and the rotation guide portion 2300.

[0121] The reflection module 2000 can include a first driving unit that provides a driving force to rotate the reflection member support 2200.

[0122] The first driving unit can include a first driving magnet 2231 and a first driving coil 2232 arranged to face each other.

[0123] The first driving magnet 2231 can be disposed in the reflection member support 2200, and the first driving coil 2232 can be disposed in the housing 1100.

[0124] In an embodiment, the reflection member support 2200 can include an extension 2210 extending to a rear portion of the reflection member 2100 and disposed between the rotation guide portion 2300 and the housing 1100, and the first driving magnet 2231 can be disposed on the extension 2210. The first driving coil 2232 can be disposed on one surface of the housing 1100 facing the extension 2210. The first driving magnet 2231 can correspond one-to-one to the first driving coil 2232. In another embodiment, the positions of the first driving magnet 2231 and the first driving coil 2232 can be interchanged.

[0125] The first driving coil 2232 can be mounted on the main substrate 5000 and can be disposed in the housing 1100. The first driving coil 2232 can be exposed to the inner space of the housing 1100 through the through-hole 1101 and thus can directly face the first driving magnet 2231.

[0126] In an embodiment, the first driving magnet 2231 and the first driving coil 2232 can face each other in the optical axis direction (Z-axis direction), and generate a driving force in a direction (e.g., the second axis direction (Y-axis direction)) perpendicular to the optical axis (Z-axis) at a position spaced apart from the first axis (X-axis) (or the first ball member 2410). By the driving force, the reflection member support 2200 can be rotated about the first axis (X-axis).

[0127] A surface (e.g., a surface facing the first driving coil 2232) of the first driving magnet 2231 can include an N-pole and an S-pole. In an example, the surface of the first driving magnet 2231 can include an N-pole (S-pole) region, a neutral region, and an S-pole (N-pole) region in the second axis direction (Y-axis direction).

[0128] The reflection module 2000 can include a first position sensing unit (or sensor) detecting a position of the reflection member support 2200.

[0129] The first position sensing unit can include a first sensing magnet 2235 and a first position sensor 2233 arranged to face each other.

[0130] The first sensing magnet 2235 can be disposed in the reflection member support 2200, and the first position sensor 2233 can be disposed in the housing 1100.

[0131] In an example, the first sensing magnet 2235 can be disposed together with the first driving magnet 2231 in the extension 2210 of the reflection member support 2200. The first sensing magnet 2235 can be spaced apart from the first driving magnet 2231 in the second axis direction (Y-axis direction).

[0132] A surface of the first sensing magnet 2235 facing the first position sensor 2233 can include an S-pole (N-pole) region, a neutral region, and an N-pole (S-pole) region in the second axis direction (Y-axis direction). In an example, the first sensing magnet 2235 and the first driving magnet 2231 can be arranged such that the same polarity regions (N-pole and N-pole or S-pole and S-pole) are adjacent to each other.

[0133] The first position sensor 2233 can be mounted on the main substrate 5000 together with the first driving coil 2232, and disposed in the housing 1100.

[0134] The first position sensor 2233 can be disposed to face the neutral region of the first sensing magnet 2235.

[0135] The first driving magnet 2231 and the first sensing magnet 2235 can be disposed in the reflection member bracket 2200 and rotate together with the reflection member bracket 2200. On the other hand, the first driving coil 2232 and the first position sensor 2233 can be fixedly disposed in the housing 1100.

[0136] The first position sensor 2233 can detect a change in magnetic flux to detect an amount of movement of the reflection member bracket 2200. In an example, the first position sensor 2233 can be disposed as a Hall sensor.

[0137] The first position sensor 2233 can be spaced apart from the first driving coil 2232 in the second axis direction (Y-axis direction). The first position sensor 2233 can be less affected by a magnetic field of the first driving coil 2232, and thus sensing accuracy can be improved.

[0138] Figure 12 is a bottom perspective view of a reflection module according to an embodiment of the disclosure, Figure 13 is a view showing an arrangement of a second ball member that supports rotation of a rotation guide portion, and Figure 14 is a plan view showing a rotation guide portion disposed in a housing.

[0139] The second ball member 2420 can be disposed between the rotation guide portion 2300 and the housing 1100.

[0140] The second ball member 2420 can separate the rotation guide portion 2300 and the housing 1100 and support rotation of the rotation guide portion 2300 with respect to the housing 1100.

[0141] In an embodiment, the second ball member 2420 can include a single pivot ball 2421 and a plurality of guide balls 2422, e.g., two guide balls 2422, spaced apart from the pivot ball 2421.

[0142] The pivot ball 2421 can form a second axis (Y-axis). In an example, the second axis (Y-axis) can pass through the pivot ball 2421.

[0143] The pivot ball 2421 can rotate while being fixed in place with respect to the rotation guide portion 2300 and the housing 1100.

[0144] Accommodation recesses can be provided in the rotation guide portion 2300 and the housing 1100 to accommodate the second ball member 2420.

[0145] The rotation guide portion 2300 can be provided with a third accommodation recess 2322 in a bottom surface, and the housing 1100 can be provided with a fourth accommodation recess 1122 in a bottom surface. The third accommodation recess 2322 and the fourth accommodation recess 1122 can face each other in the second axis direction (Y-axis direction).

[0146] A portion of the pivot ball 2421 can be accommodated in the third accommodation recess 2322, and another portion of the pivot ball 2421 can be accommodated in the fourth accommodation recess 1122.

[0147] The pivot ball 2421 can be supported at three points by the third accommodation recess 2322 and the fourth accommodation recess 1122. The third accommodation recess 2322 and the fourth accommodation recess 1122 can each include three inclined surfaces so that the pivot ball 2421 can be rotated in place.

[0148] The plurality of guide balls 2422 can support rotation of the rotation guide 2300 with respect to the second axis (Y-axis) while rolling in a direction in which the rotation guide 2300 rotates.

[0149] The rotation guide 2300 and the housing 1100 can include guide rails that accommodate the plurality of guide balls 2422.

[0150] A first guide rail 2323 is provided on a bottom surface of the rotation guide 2300, and has a length in a rotation direction (X-axis direction) of the rotation guide 2300 and is spaced apart in a first axis direction (X-axis direction). On a bottom surface of the housing 1100, a second guide rail 1123 is provided at a position facing the first guide rail 2323, and has a length in the rotation direction of the rotation guide 2300.

[0151] For example, the first guide rail 2323 and the second guide rail 1123 can have a curved shape that can correspond to a portion of a circle centered on the rotation axis (i.e., the second axis (Y-axis)) of the rotation guide 2300. Alternatively, the first guide rail 2323 and the second guide rail 1123 can have a straight shape that can correspond to a tangent line that contacts a circle centered on the second axis (Y-axis).

[0152] The plurality of guide balls 2422 can be accommodated between the first guide rail 2323 and the second guide rail 1123, respectively.

[0153] A portion of the plurality of guide balls 2422 can be accommodated in the first guide rail 2323, and another portion of the plurality of guide balls 2422 can be accommodated in the second guide rail 1123.

[0154] The first guide rail 2323 and the second guide rail 1123 can have a width greater than a diameter of the plurality of guide balls 2422, and have a flat bottom surface.

[0155] The plurality of guide balls 2422 can be in contact with the bottom surfaces of the first guide rail 2323 and the second guide rail 1123. That is, the plurality of guide balls 2422 can be supported at one point on each of the first guide rail 2323 and the second guide rail 1123 and roll along the longitudinal direction of the first guide rail 2323 and the second guide rail 1123. In this example, since the plurality of guide balls 2422 do not contact the side surfaces that define the width of the first guide rail 2323 and the second guide rail 1123, they can roll relatively freely. However, as the positions of the plurality of guide balls 2422 change due to the rotation of the rotational guide portion 2300, the plurality of guide balls 2422 can be supported at two points on the first guide rail 2323 and / or the second guide rail 1123.

[0156] The rotational guide portion 2300 and the housing 1100 can further include a support frame 2310 and a support frame 1110 inserted into positions corresponding to the first guide rail 2323 and the second guide rail 1123, respectively.

[0157] The support frame 2310 and the support frame 1110 are formed of a material having more excellent rigidity with respect to the main material of the rotational guide portion 2300 and the housing 1100. For example, the rotational guide portion 2300 and the housing 1100 can be injection-molded products, and the support frame 2310 and the support frame 1110 can be metal.

[0158] The support frame 2310 and the support frame 1110 can be exposed through the bottom surfaces of the first guide rail 2323 and the second guide rail 1123, and the guide balls 2422 can roll on the support frame 2310 and the support frame 1110.

[0159] According to embodiments of the disclosure, an angle (hereinafter referred to as a first angle) θ formed by two virtual lines passing through the center of the pivot ball 2421 and the centers of the two guide balls 2422 can always be 90° or less, preferably, can be an acute angle.

[0160] That is, the first angle θ can satisfy the following conditional expression. In the conditional expression, θ max is the maximum first angle. When this condition is satisfied, the load applied to the guide balls 2422 can be reduced, thereby improving the driving efficiency.

[0161] θ max ≤ 90 (unit: degree)

[0162] Since the position of the pivot ball 2421 is fixed, the first angle θ can change depending on the positions of the plurality of guide balls 2422. In the example, the plurality of guide balls 2422 can be disposed at any point within the space defined by the first guide rail 2323 and the second guide rail 1123.

[0163] AsFigure 13 The maximum first angle θ max The maximum first angle θ max The maximum first angle θ

[0164] The rotation guide portion 2300 can be closely supported in the housing 1100 by magnetic force (magnetic attraction).

[0165] The reflection module 2000 can include a pair of magnetic members disposed in the rotation guide portion 2300 and the housing 1100. The pair of magnetic members can include a traction magnet 2350 disposed in the rotation guide portion 2300 and a traction yoke 1150 disposed in the housing 1100. The traction yoke 1150 can be inserted into the housing 1100 and disposed as an integral part with the housing 1100.

[0166] The traction magnet 2350 and the traction yoke 1150 can be disposed to face each other and generate magnetic attraction in a direction in which they face each other. The traction magnet 2350 and the traction yoke 1150 can face the second axis direction (Y-axis direction) and generate magnetic attraction in the second axis direction (Y-axis direction). By the magnetic attraction, the rotation guide portion 2300 can be closely supported in the housing 1100 in the second axis direction (Y-axis direction).

[0167] In an example, a direction in which the rotation guide portion 2300 is supported in the housing 1100 can match a direction in which the rotation guide portion 2300 and the housing 1100 face each other, and the second ball member 2420 is interposed between the rotation guide portion 2300 and the housing 1100. Accordingly, the second ball member 2420 can not be detached from between the rotation guide portion 2300 and the housing 1100.

[0168] Referring to Figure 13 The traction magnet 2350 disposed on the rotation guide portion 2300 can be disposed within a support region T having a substantially triangular shape defined by the second ball member 2420. Similarly, the traction yoke 1150 facing the traction magnet 2350 can also be disposed within the support region T.

[0169] At least a portion of the traction magnet 2350 and the traction yoke 1150 can be continuously disposed within the support region T as the rotation guide portion 2300 rotates with respect to the housing 1100.

[0170] In an example, a geometric center CP of the traction magnet 2350 can be continuously disposed within the support region T as the rotation guide portion 2300 rotates with respect to the housing 1100.

[0171] A geometric center CP of the traction magnet 2350 can be substantially identical to a center of magnetic attraction formed by the traction magnet 2350 and the traction yoke 1150. Accordingly, when the geometric center CP of the traction magnet 2350 is continuously disposed within the support area T, the rotation guide 2300 can stably rotate with respect to the housing 1100.

[0172] Further, the geometric center CP of the traction magnet 2350 can be disposed closer to the pivot ball 2421 than the plurality of guide balls 2422 within the support area T.

[0173] When the rotation guide 2300 rotates with respect to the housing 1100, the position of the pivot ball 2421 is fixed, while the positions of the guide balls 2422 can change, and the shape of the support area T also changes according to the positions of the guide balls 2422.

[0174] Accordingly, since the geometric center CP of the traction magnet 2350 is disposed close to the pivot ball 2421 within the support area T, the geometric center CP of the traction magnet 2350 can always be located within the support area T even though the shape of the support area T changes.

[0175] The reflection module 2000 can include a second driving unit that provides a driving force to rotate the rotation guide 2300.

[0176] The second driving unit can include a second driving magnet 2331 and a second driving coil 2332 arranged to face each other.

[0177] The second driving magnet 2331 can be disposed in the rotation guide 2300, and the second driving coil 2332 can be disposed in the housing 1100.

[0178] In an example, the second driving magnet 2331 includes two magnets, and the two magnets can be disposed on either side surface of the rotation guide 2300. The second driving coil 2332 can be disposed on the side surface of the housing 1100 facing either side surface of the rotation guide 2300, respectively. The second driving magnet 2331 can correspond one-to-one to the second driving coil 2332. In another embodiment, the positions of the second driving magnet 2331 and the second driving coil 2332 can be interchanged.

[0179] The second driving coil 2332 can be mounted on the main substrate 5000 and can be disposed in the housing 1100. The second driving coil 2332 can be exposed to the inner space of the housing 1100 through the through-hole 1103 and thus can directly face the second driving magnet 2331.

[0180] In an embodiment, the second driving magnet 2331 and the second driving coil 2332 can face each other in the first axis direction (X-axis direction) and generate a driving force in the optical axis direction (Z-axis direction) in a position spaced apart from the second axis (Y-axis) (or the pivot ball 2421). By the driving force, the rotation guide 2300 can rotate about the second axis (Y-axis).

[0181] A surface (e.g., a surface facing the second driving coil 2332) of the second driving magnet 2331 can include an N-pole and an S-pole. In an example, the surface of the second driving magnet 2331 can include an N-pole (S-pole) region, a neutral region, and an S-pole (N-pole) region in the optical axis direction (Z-axis direction).

[0182] The reflection module 2000 can include a second position sensing unit (or sensor) detecting a position of the rotation guide 2300.

[0183] The second position sensing unit can include a second sensing magnet 2335 and a second position sensor 2333 arranged to face each other.

[0184] The second sensing magnet 2335 can be disposed in the rotation guide 2300, and the second position sensor 2333 can be disposed in the housing 1100.

[0185] In an example, the second sensing magnet 2335 can be disposed on either side surface of the rotation guide 2300 together with the second driving magnet 2331. The second sensing magnet 2335 can be spaced apart from the second driving magnet 2331 in the optical axis direction (Z-axis direction).

[0186] A surface of the second sensing magnet 2335 facing the second position sensor 2333 can include an S-pole (N-pole) region, a neutral region, and an N-pole (S-pole) region in the optical axis direction (Z-axis direction). In an example, the second sensing magnet 2335 and the second driving magnet 2331 can be arranged such that the same polarity regions (S-pole and S-pole or N-pole and N-pole) are adjacent to each other.

[0187] The second position sensor 2333 can be mounted on the main substrate 5000 together with the second driving coil 2332 and disposed in the housing 1100.

[0188] The second position sensor 2333 can be disposed to face the neutral region of the second sensing magnet 2335.

[0189] The second driving magnet 2331 and the second sensing magnet 2335 can be disposed in the rotation guide 2300 and rotate together with the rotation guide 2300. On the other hand, the second driving coil 2332 and the second position sensor 2333 can be fixedly disposed in the housing 1100.

[0190] The second position sensor 2333 can detect a change in magnetic flux to detect an amount of movement of the rotation guide 2300. In an example, the second position sensor 2333 can be provided as a Hall sensor.

[0191] The second position sensor 2333 can be spaced apart from the second driving coil 2332 in the optical axis direction (Z-axis direction). The second position sensor 2333 can be less affected by a magnetic field of the second driving coil 2332, and thus can improve sensing accuracy.

[0192] Figure 15 is an enlarged view of a region A (first damper) of Figure 14 is an enlarged view of a region B (second damper) of Figure 16 and Figure 14 is a diagram showing a rotation state of the rotation guide, Figure 17A is a diagram showing an additionally arranged auxiliary damper, and Figure 17B is a cross-sectional view taken along line IV-IV' of Figure 18 Figure 19 Figure 9

[0193] According to an embodiment of the disclosure, the camera module 100 includes dampers 1500 and 1600 for reducing noise occurring in the camera module 100.

[0194] The dampers 1500 and 1600 can be formed of a material including an elastic material such as a polyurethane series, rubber, silicone, sponge, etc. Alternatively, the dampers 1500 and 1600 can be formed of a plastic material such as a material of the housing 1100.

[0195] The dampers 1500 and 1600 can absorb impact and noise by preventing direct collision between adjacent structures due to driving of the reflection module 2000 or external impact. In addition, the dampers 1500 and 1600 can also be used to control movement of the reflection module 2000 according to a position at which the dampers 1500 and 1600 are disposed.

[0196] The dampers 1500 and 1600 can be integrally formed with the housing 1100. For example, the dampers 1500 and 1600 can be attached to a support frame 1160 that is inserted into the housing 1100 and disposed integrally with the housing 1100. However, the dampers 1500 and 1600 can also be disposed in different forms.

[0197] Referring to Figure 14 ​​​The dampers 1500 and 1600 include a first damper 1500 and a second damper 1600 arranged in positions spaced apart from each other on the bottom surface of the housing 1100.

[0198] The first damper 1500 and the second damper 1600 are formed to protrude from the bottom surface of the housing 1100 toward the internal space of the housing 1100. For example, the first damper 1500 and the second damper 1600 are formed to protrude in the second axis direction (Y-axis direction) from the bottom surface of the housing 1100.

[0199] The first damper 1500 is disposed parallel to the second axis (Y-axis), which is the rotation axis of the rotation guide 2300. For example, the first damper 1500 is disposed parallel to the second axis (Y-axis) in the first axis direction (X-axis direction). The first damper 1500 includes a plurality of dampers, for example, two dampers, and the two dampers are arranged to be spaced apart from each other in the first axis direction (X-axis direction) with the pivot ball 2421 forming the second axis (Y-axis) therebetween.

[0200] The rotation guide 2300 includes a damper accommodation portion 2324 that accommodates the first damper 1500. A portion of the first damper 1500 is accommodated in the damper accommodation portion 2324.

[0201] For example, the damper accommodation portion 2324 can have a hole shape that passes through the rotation guide 2300 in the thickness direction (for example, in the second axis direction (Y-axis direction)).

[0202] One end of the first damper 1500 can protrude toward the reflection member support 2200 disposed on the rotation guide 2300 through the hole-shaped damper accommodation portion 2324.

[0203] One end of the first damper 1500 is disposed to directly face the reflection member support 2200 in the second axis direction (Y-axis direction).

[0204] When an impact is applied to the camera module 100 in the second axis direction (Y-axis direction), the reflection member support 2200 first collides with the first damper 1500 (first impact). That is, a direct collision between the reflection member support 2200 and the rotation guide 2300 or between the reflection member support 2200 and the housing 1100 can be prevented by the first damper 1500, and thus an impact and noise can be reduced.

[0205] In addition, when the reflection member support 2200 rotates around the first axis (X-axis), the first damper 1500 can also function as a stopper that controls the movement of the reflection member support 2200.

[0206] Referring toFigure 14 The first damper 1500 is housed in the damper housing portion 2324 at a distance from the damper housing portion 2324.

[0207] The damper housing portion 2324 includes a side surface that defines the damper housing portion 2324, and the first damper 1500 is disposed on the inner side of the side surface that defines the damper housing portion 2324 at a distance from the inner side of the side surface that defines the damper housing portion 2324.

[0208] The first damper 1500 and the side surface that defines the damper housing portion 2324 have a gap in the optical axis direction (Z-axis direction) and the first axis direction (X-axis direction).

[0209] The damper housing portion 2324 has a side surface (hereinafter referred to as a first side surface) 2324a that has a length in the first axis direction (X-axis direction) and faces the first damper 1500 with a gap in the optical axis direction (Z-axis direction), and a side surface (hereinafter referred to as a second side surface) 2324b that has a length in the optical axis direction (Z-axis direction) and faces the first damper 1500 with a gap in the first axis direction (X-axis direction).

[0210] There can be a gap from the first side surface 2324a of the damper housing portion 2324 to the first damper 1500 in the optical axis direction (Z-axis direction), and there can be a gap from the second side surface 2324b of the damper housing portion 2324 to the first damper 1500 in the first axis direction (X-axis direction).

[0211] The gap between the first damper 1500 and the first side surface 2324a and the second side surface 2324b limits the linear motion of the rotation guide portion 2300.

[0212] For example, the damper housing portion 2324 is formed to have a minimum gap Ga in the optical axis direction (Z-axis direction) and a minimum gap Gb in the first axis direction (X-axis direction), and the first damper 1500 is close to the rotation center. Therefore, it is possible to reduce the motion of the rotation guide portion 2300 in the respective directions.

[0213] The gap between the first damper 1500 and the first side surface 2324a can vary when the rotation guide portion 2300 rotates.

[0214] For example, when the rotation guide 2300 rotates around the second axis (Y axis), the rotation guide 2300 moves in the circumferential direction of a circle that has the second axis (Y axis) as a center and has a distance from the second axis (Y axis) (i.e., the rotation center) as a radius. This movement generates a displacement in the optical axis direction (Z axis direction), and the magnitude of the displacement is proportional to the distance from the rotation center.

[0215] Accordingly, the first side surface 2324a can be formed in a form in which the width of the damper accommodation portion 2324 is substantially enlarged away from the second axis (Y axis) (i.e., the rotation center). For example, the gap between the first side surfaces 2324a substantially increases away from the rotation center, and the gap between the first side surface 2324a and the first damper 1500 also substantially increases away from the rotation center.

[0216] The first side surface 2324a is provided with a stepped portion 2325. The stepped portion 2325 is formed so as to narrow the width of the damper accommodation portion 2324. For example, as the damper accommodation portion 2324 extends away from the rotation center, the width of the damper accommodation portion 2324 can be enlarged, narrowed once at the stepped portion 2325, and then enlarged again.

[0217] The first damper 1500 is disposed so that one end thereof in the length direction is closest to the rotation center, and the other end thereof is farthest from the rotation center. The stepped portion 2325 is disposed so as to face a portion closer to the other end than to one end of the first damper 1500. In other words, the damper accommodation portion 2324 can be narrowed in width once in a portion in which the moving distance is relatively large due to the stepped portion 2325.

[0218] When the rotation guide 2300 rotates, the first damper 1500 can function as a stopper that controls the movement of the rotation guide 2300 by colliding with the first side surface 2324a of the damper accommodation portion 2324.

[0219] For example, when the rotation guide 2300 rotates around the second axis (Y axis), the first damper 1500 first collides with the first side surface 2324a in the stepped portion 2325, and then a portion (an outer portion) 1500-1 having a larger moving distance than the portion that collides with the stepped portion 2325 collides with the first side surface 2324a.

[0220] When the rotation guide 2300 rotates around the second axis (Y axis), the first damper 1500 disposed on one side with respect to the second axis (Y axis) and the first damper 1500 disposed on the opposite side have opposite directions of movement, and thus they collide with the first side surface 2324a in opposite directions, respectively.

[0221] For example, with reference to Figure 17AWhen the rotation guide portion 2300 is rotated counterclockwise with respect to the second axis (Y-axis), the first damper 1500 disposed on one side with respect to the second axis (Y-axis) collides with the first side surface 2324a facing the -Z direction, and the first damper 1500 disposed on the opposite side collides with the first side surface 2324a facing the +Z direction. Similarly, as shown in FIG. 25B, when the rotation guide portion 2300 is rotated clockwise with respect to the second axis (Y-axis), the first damper 1500 disposed on one side with respect to the second axis (Y-axis) collides with the first side surface 2324a facing the +Z direction, and the first damper 1500 disposed on the opposite side collides with the first side surface 2324a facing the -Z direction. Figure 17B

[0222] Meanwhile, in the maximum rotation state of the rotation guide portion 2300, a portion (inner portion) 1500-2 of the first damper 1500 having a shorter moving distance than the moving distance of the portion colliding with the stepped portion 2325 can be spaced apart from the first side surface 2324a by a certain gap.

[0223] The second damper 1600 is disposed to be spaced apart from the first damper 1500 in the optical axis direction (Z-axis direction) on the bottom surface of the housing 1100.

[0224] The second damper 1600 includes a plurality of dampers, for example, two or more dampers, and the two dampers are spaced apart from each other in the first axis direction (X-axis direction).

[0225] The second damper 1600 is disposed not to overlap the rotation guide portion 2300. The second damper 1600 is disposed at a position spaced apart from the rotation guide portion 2300 in the radial direction of a circle having the second axis (Y-axis) as the center of rotation.

[0226] Referring to FIGS. 24A and 24B, Figure 14 The rotation guide portion 2300 includes protrusions 2320 protruding toward the housing 1100 from the rear portion of the reflection member 2100. The protrusions 2320 are spaced apart in the first axis direction (X-axis direction) on the rotation guide portion 2300. The second dampers 1600 are spaced apart in the first axis direction (X-axis direction), and the protrusions 2320 are located therebetween.

[0227] Referring to FIGS. 24A and 24B, Figure 16 The second dampers 1600 are spaced apart from the protrusions 2320, and the second dampers 1600 and the protrusions 2320 are disposed to face each other. The second dampers 1600 and the protrusions 2320 are disposed to face each other in the radial direction of a circle having the second axis (Y-axis) as the center of rotation.

[0228] The facing surfaces of the second dampers 1600 and the protrusions 2320 can be curved. ​

[0229] For example, the opposing surfaces 1610 and 2326 of the second damper 1600 and the protrusion 2320 can be surfaces including a portion of a circle having the second axis (Y-axis) as a center of rotation and a distance from the center of rotation to between the opposing surfaces 1610 and 2326 as a radius.

[0230] In addition, an area of one surface 2326 of the protrusion 2320 facing the second damper 1600 is set to be wider than an area of one surface 1610 of the second damper 1600 facing the protrusion 2320.

[0231] When the rotation guide 2300 rotates, the second damper 1600 and the protrusion 2320 do not contact each other. In contrast, when the rotation guide 2300 moves in a direction other than the rotation direction, for example, in the optical axis direction (Z-axis direction) and / or the first axis direction (X-axis direction), the second damper 1600 and the protrusion 2320 can contact each other.

[0232] In detail, since the second damper 1600 and the protrusion 2320 face each other in a direction approximately diagonal to the optical axis direction (Z-axis direction) and the first axis direction (X-axis direction), a gap between the second damper 1600 and the protrusion 2320 in the optical axis direction (Z-axis direction) and the first axis direction (X-axis direction) can be minimized. That is, the second damper 1600 can limit linear motion of the rotation guide 2300 together with the first damper 1500.

[0233] In an embodiment, the camera module 100 can further include an auxiliary damper 1700.

[0234] The auxiliary damper 1700 is formed to protrude from a bottom surface of the housing 1100 in the second axis direction (Y-axis direction).

[0235] The auxiliary damper 1700 is disposed between the second dampers 1600 spaced apart in the first axis direction (X-axis direction).

[0236] Referring to Figure 18 The auxiliary damper 1700 can be disposed as one damper having a length in the first axis direction (X-axis direction). However, the auxiliary damper 1700 can be disposed by being divided into a plurality of portions.

[0237] The rotation guide 2300 can further include a protrusion 2330 in a position corresponding to the auxiliary damper 1700.

[0238] For example, the rotation guide 2300 can include a first protrusion 2320 facing the second damper 1600 and a second protrusion 2330 facing the auxiliary damper 1700.

[0239] The auxiliary damper 1700 and the second protrusion 2330 are arranged to face each other and have a gap in a radial direction of a circle having the second axis (Y axis) as a center of rotation.

[0240] The facing surfaces of the auxiliary damper 1700 and the second protrusion 2330 can be curved, and the area of one surface of the second protrusion 2330 facing the auxiliary damper 1700 can be provided to be wider than the area of one surface of the auxiliary damper 1700 facing the second protrusion 2330.

[0241] The auxiliary damper 1700 restricts movement of the rotation guide 2300 in a direction other than a rotational direction. For example, the auxiliary damper 1700 can not be in contact with the second protrusion 2330 when the rotation guide 2300 rotates, but the auxiliary damper 1700 can be in contact with the second protrusion 2330 when the rotation guide 2300 moves in a straight line direction.

[0242] Further, the description regarding the second damper 1600 can be equally applied to the auxiliary damper 1700.

[0243] The reflection module 2000 can include an auxiliary member 2500 having a function similar to the functions of the above-described dampers 1500 and 1600.

[0244] The auxiliary member 2500 can be coupled to the rotation guide 2300 to surround a portion of the reflection member bracket 2200. In an example, the auxiliary member 2500 can be provided to surround a portion of the reflection member bracket 2200 supported on the rotation guide 2300, and the first ball member 2410 is interposed between the reflection member bracket 2200 and the rotation guide 2300.

[0245] Further, the auxiliary member 2500 can be spaced apart from the reflection member bracket 2200 by a certain gap in a state of being coupled to the rotation guide 2300 so as not to interfere with rotation of the reflection member bracket 2200.

[0246] Upper and lower edges of the auxiliary member 2500 are provided with elastic material members. The elastic material members are provided to be wound around the auxiliary member 2500.

[0247] When the reflection member bracket 2200 rotates around the first axis (X axis), the elastic members covering the upper and lower edges of the auxiliary member 2500 can collide with the housing 1100 and the cover 1300.

[0248] Figure 20 is an exploded perspective view of a lens module according to an embodiment of the disclosure, and Figure 21 is a bottom exploded perspective view of a lens module according to an embodiment of the disclosure.

[0249] The lens module 3000 can include a plurality of lens barrels. The plurality of lens barrels can each include at least one lens arranged in an optical axis direction (Z-axis direction).

[0250] In an embodiment, the plurality of lens barrels can include a first lens barrel 3110 and a second lens barrel 3120. The first lens barrel 3110 can be disposed on an object side of the second lens barrel 3120. In an example, light reflected from the reflection module 2000 can be incident on the image sensor 4100 after sequentially passing through the first lens barrel 3110 and the second lens barrel 3120.

[0251] The first lens barrel 3110 can be fixedly disposed in the housing 1100, and the second lens barrel 3120 can be disposed to be relatively movable with respect to the housing 1100.

[0252] The lens module 3000 can include a lens holder 3200 to which the second lens barrel 3120 is coupled. The second lens barrel 3120 can move together with the lens holder 3200 in the optical axis direction (Z-axis direction).

[0253] When the second lens barrel 3120 moves in the optical axis direction (Z-axis direction), a gap between the second lens barrel 3120, the first lens barrel 3110, and the image sensor 4100 in the optical axis direction (Z-axis direction) changes, thereby implementing an auto focus adjustment function and a zoom function of the camera module 100.

[0254] The lens holder 3200 can include a first side wall 3210 and a second side wall 3220 disposed opposite each other with respect to the optical axis (Z-axis). The second lens barrel 3120 can be disposed between the first side wall 3210 and the second side wall 3220.

[0255] The first side wall 3210 can extend from one side of the second lens barrel 3120 in the optical axis direction (Z-axis direction), and the second side wall 3220 can extend from the other side of the second lens barrel 3120 in the optical axis direction (Z-axis direction) in parallel with the first side wall 3210. In an example, end portions of the first side wall 3210 and the second side wall 3220 can be disposed between the housing 1100 and the first lens barrel 3110, and the first lens barrel 3110 can be disposed between the first side wall 3210 and the second side wall 3220.

[0256] A third ball member 3430 can be disposed between the lens holder 3200 and the housing 1100 to support the movement of the lens holder 3200.

[0257] The third ball member 3430 can include three or more balls. In an example, the third ball member 3430 can include four balls.

[0258] In an embodiment, four balls can support one side and the other side of the lens holder 3200, respectively. In an example, two balls among the four balls can be disposed between the first side wall 3210 of the lens holder 3200 and the housing 1100, and the remaining two balls can be disposed between the second side wall 3220 of the lens holder 3200 and the housing 1100.

[0259] The first side wall 3210 and the second side wall 3220 of the lens holder 3200 and one surface of the housing 1100 can be provided with guide recesses that accommodate the third ball member 3430.

[0260] Third guide recesses 3211 and 3221 having a length in the optical axis direction (Z-axis direction) can be disposed on the bottom surfaces of the first side wall 3210 and the second side wall 3220 of the lens holder 3200. In addition, fourth guide recesses 1124 having a length in the optical axis direction (Z-axis direction) can be disposed on the bottom surface of the housing 1100 at positions facing the third guide recesses 3211 and 3221.

[0261] For example, one third guide recess 3211 and one third guide recess 3221 are disposed in the first side wall 3210 and the second side wall 3220, respectively, and the third guide recess 3211 disposed in the first side wall 3210 of the lens holder 3200 and the third guide recess 3221 disposed in the second side wall 3220 of the lens holder 3200 can face two fourth guide recesses 1124, respectively. The two fourth guide recesses 1124 facing the third guide recess 3211 or 3221 disposed in the first side wall 3210 or the second side wall 3220 of the lens holder 3200 are disposed apart from each other in the optical axis direction (Z-axis direction), and can have a length shorter than the length of the third guide recesses 3211 and 3221 in the optical axis direction (Z-axis direction).

[0262] Two balls are accommodated in each of the third guide recess 3211 disposed on the first side wall 3210 and the third guide recess 3221 disposed on the second side wall 3220, and one ball can be individually accommodated in the fourth guide recess 1124.

[0263] The third ball member 3430 is inserted between the third guide recesses 3211 and 3221 and the fourth guide recess 1124 and rolls in the optical axis direction (Z-axis direction) to support the movement of the lens holder 3200 in the optical axis direction (Z-axis direction).

[0264] The third guide recess 3211 disposed on the first side wall 3210 of the lens holder 3200 and the third guide recess 3221 disposed on the second side wall 3220 of the lens holder 3200 can have different cross-sectional shapes.

[0265] The ball disposed between the third guide recess 3211 disposed on the first side wall 3210 of the lens holder 3200 and the fourth guide recess 1124 facing the third guide recess 3211 makes two-point contact with each of the third guide recess 3211 and the fourth guide recess 1124. Meanwhile, the ball disposed between the third guide recess 3221 disposed on the second side wall 3220 of the lens holder 3200 and the fourth guide recess 1124 facing the third guide recess 3221 makes one-point contact with the third guide recess 3221 and two-point contact with the fourth guide recess 1124.

[0266] The ball disposed between the first side wall 3210 of the lens holder 3200 and the housing 1100 serves as a main guide portion, and the ball disposed between the second side wall 3220 of the lens holder 3200 and the housing 1100 serves as an auxiliary guide portion.

[0267] The lens holder 3200 can be closely supported by the housing 1100 by magnetic force (magnetic attraction).

[0268] The lens module 3000 can include a pair of magnetic members disposed in the lens holder 3200 and the housing 1100. The pair of magnetic members can include a traction magnet 3240 disposed in the lens holder 3200 and a traction yoke 1126 disposed in the housing 1100.

[0269] The traction magnet 3240 and the traction yoke 1126 can be disposed to face each other and generate magnetic attraction in a direction in which they face each other. The traction magnet 3240 and the traction yoke 1126 can face each other in the second axis direction (Y-axis direction) and generate magnetic attraction in the second axis direction (Y-axis direction). By the magnetic attraction, the lens holder 3200 can be closely supported in the housing 1100 in the second axis direction (Y-axis direction).

[0270] The direction in which the lens holder 3200 is supported by the housing 1100 can match the direction in which the lens holder 3200 and the housing 1100 face each other, and a third ball member 3430 is interposed between the lens holder 3200 and the housing 1100. Accordingly, by the magnetic attraction, the third ball member 3430 can not be detached from between the lens holder 3200 and the housing 1100.

[0271] The pair of magnetic members can be disposed to be inclined toward the main guide portion. For example, the pair of magnetic members is disposed between the optical axis (Z-axis) and the first side wall 3210. Accordingly, the attraction force generated by the pair of magnetic members acts more strongly on the main guide portion than on the auxiliary guide portion.

[0272] The lens module 3000 can include a third driving unit that provides a driving force to move the lens holder 3200.

[0273] The third driving unit can include a third driving magnet 3231 and a third driving coil 3232 arranged to face each other.

[0274] The third driving magnet 3231 can be disposed in the lens holder 3200, and the third driving coil 3232 can be disposed in the housing 1100.

[0275] In an example, the third driving magnet 3231 can be disposed on at least one of the first side wall 3210 and the second side wall 3220 of the lens holder 3200, and the third driving coil 3232 can be disposed on a side surface of the housing 1100 facing at least one of the first side wall 3210 and the second side wall 3220. The third driving magnet 3231 can correspond one-to-one to the third driving coil 3232.

[0276] The third driving coil 3232 can be mounted on the main substrate 5000 and can be disposed in the housing 1100. The third driving coil 3232 can be exposed to the inner space of the housing 1100 through the through-hole 1105 and thus can directly face the third driving magnet 3231.

[0277] In an embodiment, the third driving magnet 3231 and the third driving coil 3232 can face each other in the first axis direction (X-axis direction) and generate a driving force in the optical axis direction (Z-axis direction). By the driving force, the lens holder 3200 or the like can move in the optical axis direction (Z-axis direction).

[0278] A surface (e.g., a surface facing the third driving coil 3232) of the third driving magnet 3231 can include an N pole and an S pole. In an example, the surface of the third driving magnet 3231 can include an N pole (S pole) region, a neutral region, and an S pole (N pole) region in the optical axis direction (Z-axis direction).

[0279] The lens module 3000 can include a third position sensor 3233 detecting a position of the lens holder 3200.

[0280] The third position sensor 3233 can be mounted on the main substrate 5000 together with the third driving coil 3232 and disposed in the housing 1100.

[0281] The third position sensor 3233 can face the third driving magnet 3231 through the through-hole 1105. In an example, the third position sensor 3233 can be disposed to face the neutral region of the third driving magnet 3231.

[0282] The third position sensor 3233 can detect a change in magnetic flux to detect an amount of movement of the lens holder 3200. In an example, the third position sensor 3233 can be disposed as a Hall sensor.

[0283] The stopper 1400 can be disposed to face the lens module 3000 in the optical axis direction (Z-axis direction) in the housing 1100. For example, the stopper 1400 can be disposed to fit into a wall of the housing 1100.

[0284] The stopper 1400 can include a deformable elastic member. The elastic member can protrude toward the lens module 3000. For example, the elastic member can face the first side wall 3210 and the second side wall 3220 of the lens holder 3200 in the optical axis direction (Z-axis direction), respectively.

[0285] The lens holder 3200 can first come into contact with the elastic member by moving in the optical axis direction (Z-axis direction).

[0286] The elastic member can prevent direct collision between the lens module 3000 and the housing 1100, and absorb impact and noise caused by the collision. In addition, the elastic member can limit the amount of movement of the lens holder 3200.

[0287] While specific examples have been shown and described, it will be apparent to those of ordinary skill in the art having the benefit of this 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 to offer description rather than limitation, as to the scope of the disclosure. A description of features or aspects within each example should be considered to apply to similar features or aspects within other examples. Proper results can still be achieved if the described techniques are performed in a different order, and / or if the described systems, architectures, devices, or circuits are combined or substituted with other components or their equivalents, or if other components are used instead of, or in addition to, the described ones. Accordingly, the scope of the disclosure is not limited to the specific embodiments described, but only by the claims and their equivalents. All variations within the scope of the claims and their equivalents are to be construed as included in the disclosure.

Claims

1. A reflection module, including: The shell has an internal space; A rotating guide is disposed in the internal space and configured to rotate about a first axis relative to the housing; A reflective member support, comprising a reflective member and supported by the rotation guide; as well as The damper protrudes from the bottom surface of the housing toward the interior space. The damper includes: A first damper is disposed adjacent to the first shaft; and The second damper is positioned at a distance from the first damper.

2. The reflection module according to claim 1 further includes: A pivot ball is disposed between the housing and the rotation guide, and the first shaft passes through the pivot ball; as well as Multiple guide balls are disposed at positions spaced apart from the pivot ball between the housing and the rotation guide portion. Wherein, the distance between the pivot ball and the first damper is less than the distance between the pivot ball and the plurality of guide balls, and the distance between the pivot ball and the second damper is greater than the distance between the pivot ball and the plurality of guide balls.

3. The reflection module according to claim 2, wherein, The rotation guide includes a damper receiving portion that passes through the rotation guide in a direction parallel to the first axis, and The first damper is disposed in the damper housing portion.

4. The reflection module according to claim 3, wherein, The damper housing portion has, at least in a portion, an increased width away from the first axis.

5. The reflection module according to claim 4, wherein, The damper housing includes: A first side surface, facing the first damper in a first direction; and The second side surface faces the first damper in a second direction perpendicular to the first direction. Wherein, the first direction and the second direction are directions perpendicular to the first axis.

6. The reflection module according to claim 5, wherein, The first side surface includes a stepped portion formed to project toward the first damper, and The damper housing portion includes a section whose width narrows once within the stepped portion.

7. The reflection module according to claim 6, wherein, When the rotation guide rotates based on the first axis, the first damper contacts the first side surface on the outer side of the stepped portion in the radial direction of a circle centered on the first axis.

8. The reflection module according to claim 3, wherein, The first damper faces the reflective member support in the direction of the first axis.

9. The reflection module according to claim 2, wherein, The rotation guide protrudes toward the housing and includes a first protrusion facing the second damper in the radial direction of a circle centered on the first axis.

10. The reflection module according to claim 9, wherein, The opposing surfaces of the second damper and the first protrusion are curved.

11. The reflection module according to claim 10, wherein, The opposing surfaces of the second damper and the first protrusion each comprise a portion of a circle with an arbitrary radius centered on the first axis.

12. The reflection module according to claim 2, wherein, The first damper and the second damper each include a plurality of dampers spaced apart from each other in a direction perpendicular to the first axis.

13. The reflection module according to claim 12, further comprising an auxiliary damper disposed between the second dampers and facing the rotation guide. in, The rotation guide includes a second protrusion facing the auxiliary damper in the radial direction of a circle centered on the first axis.

14. The reflection module according to claim 13, wherein, The opposing surfaces of the auxiliary damper and the second protrusion are curved.

15. A camera module, including: The reflection module according to any one of claims 1 to 14; as well as A lens module includes a plurality of lenses arranged in the optical axis direction and configured to be movable in the optical axis direction.

16. The camera module according to claim 15, wherein, The reflection module is configured to rotate about the first axis and a second axis perpendicular to the first axis, and Wherein, both the first axis and the second axis are perpendicular to the optical axis direction.

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