Reflection module and camera module including same

Abstract

The present disclosure relates to a reflective module comprising: a reflective member configured to convert an incident light path; a bracket mounted together with the reflective member and configured to rotate about a first rotation axis and a second rotation axis perpendicular to the first rotation axis; a housing accommodating the holder; and a first auxiliary member coupled to the bracket, where the first auxiliary member includes a frame and a plurality of buffer members disposed on the frame, and the frame includes an inclined portion having at least a portion extending obliquely with respect to the first rotation axis or the second rotation axis. The present disclosure also relates to a camera module comprising the reflective module.

Description

[0001] Cross-references to related applications

[0002] This application claims the benefit of priority to Korean Patent Application No. 10-2024-0039642, filed on March 22, 2024, with the Korean Intellectual Property Office, the entire disclosure of which is incorporated herein by reference for all purposes. Technical Field

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

[0004] Camera modules can be used in portable electronic devices such as tablets, personal computers (PCs), laptops, or smartphones.

[0005] The camera module has autofocus (AF) and optical image stabilization (OIS) functions, and there is a trend to add zoom functionality to the camera module.

[0006] The camera module can achieve autofocus and zoom functions by moving the lens module along the optical axis, and can achieve optical image stabilization by moving the lens module or reflection module in a direction intersecting the optical axis.

[0007] When the camera module performs the above functions, interference may occur between the components included in the camera module.

[0008] The above information is presented as background information and is intended to aid in understanding this disclosure. No determination or assertion is made as to whether any of the above content can be used as prior art with respect to this disclosure. Utility Model Content

[0009] This summary portion is provided to briefly introduce the selection of concepts, which will be further described in the detailed description portion below. This summary portion is not intended to identify key or essential features of the claimed subject matter, nor is it intended to help determine the scope of the claimed subject matter.

[0010] In one general aspect, the reflection module includes: a reflection member configured to convert the incident light path; a bracket mounted to the reflection member and configured to rotate about a first rotation axis and a second rotation axis perpendicular to the first rotation axis; a housing housing the bracket; and a first auxiliary member coupled to the bracket, wherein the first auxiliary member includes a frame and a plurality of buffer members disposed on the frame, and the frame includes an inclined portion having at least a portion extending obliquely relative to the first rotation axis or the second rotation axis.

[0011] The plurality of buffering members can include a first buffering member disposed on the inclined portion and a second buffering member spaced apart from the first buffering member.

[0012] The second buffering member can be spaced apart from the first buffering member in the second rotational axis direction.

[0013] Each of the first buffering member and the second buffering member can include a portion facing the housing, and at least a portion of the portion facing the housing has a curved profile.

[0014] Each of the first buffering member and the second buffering member can include one or more damping holes passing therethrough in a thickness direction.

[0015] The first buffering member can protrude toward a side surface of the housing to make a distance between the housing and the first buffering member closer than a distance between the housing and the bracket.

[0016] The second buffering member can protrude toward a bottom surface of the housing to make a distance between the housing and the second buffering member closer than a distance between the housing and the bracket.

[0017] The bracket can include a reflection bracket mounted with the reflection member and configured to rotate about the first rotational axis, and a rotation bracket supporting the reflection bracket and configured to rotate about the second rotational axis. The first auxiliary member can be coupled to the rotation bracket to surround a portion of the reflection bracket.

[0018] The reflection bracket can include a protrusion extending in the first rotational axis direction, and the first auxiliary member surrounds the protrusion.

[0019] The first auxiliary member can be configured to make at least a portion of the inclined portion face the protrusion, and a portion of the protrusion facing the first auxiliary member can extend to be parallel to the inclined portion.

[0020] The first auxiliary member can be coupled to the rotation bracket to be spaced apart from the housing and the reflection bracket.

[0021] In another general aspect, a camera module includes a housing, a reflection module disposed in the housing and including a reflection member, a lens module disposed in the housing and including at least one lens, and a first auxiliary member disposed on at least one side of the reflection module and including a frame and a plurality of buffering members disposed on the frame, wherein the frame has an inclined portion coupling at least one of the plurality of buffering members.

[0022] The reflection module can further include a bracket mounted with the reflection member and configured to rotate about a first rotational axis and a second rotational axis perpendicular to the first rotational axis. The first auxiliary member can be coupled to the bracket.

[0023] The plurality of cushioning members can include a first cushioning member disposed on the inclined portion and a second cushioning member spaced apart from the first cushioning member.

[0024] At least a portion of the plurality of cushioning members can have a curved profile.

[0025] The plurality of cushioning members can include one or more damping holes therethrough in a thickness direction.

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

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

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

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

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

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

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

[0033] Figure 7 is an exploded bottom perspective view of a reflection module according to an embodiment of the present disclosure.

[0034] Figure 8 is a perspective view of a first auxiliary member according to an embodiment of the present disclosure.

[0035] Figures 9A to 9C is a view showing a reflection holder rotated about a first rotation axis according to an embodiment of the present disclosure.

[0036] Figures 10A to 10C is a view showing a rotation holder rotated about a second rotation axis according to an embodiment of the present disclosure.

[0037] Figure 11 is an exploded perspective view of a second lens module according to an embodiment of the present disclosure.

[0038] Figure 12is a bottom perspective view of a second lens module according to an embodiment of the disclosure.

[0039] Figure 13 is a side view of a reflection module according to an embodiment of the disclosure.

[0040] Figure 14 is a side view of a reflection module according to another embodiment of the disclosure.

[0041] Throughout the drawings and detailed description, unless otherwise described, like reference characters refer to like elements. The drawings can not be to scale and the relative dimensions, proportions, and depiction of elements in the drawings can be exaggerated for purpose of clarity, illustration and convenience. DETAILED DESCRIPTION

[0042] Hereinafter, while examples of the disclosure will be described in detail with reference to the accompanying drawings, it should be noted that the examples are not limited thereto.

[0043] 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 become apparent to those skilled in the art after understanding the present disclosure. For example, the order of the operations described herein is merely an example and is not limited to the order set forth herein, except where the order of operations must be specific, and can be changed, which will be apparent to one of ordinary skill in the art after understanding the present disclosure. Also, descriptions of features that are well known in the art can be omitted for more clarity and conciseness.

[0044] The features described herein can be implemented in different forms and should not be construed as limited to the examples described herein. Rather, these examples are provided so that this disclosure will be thorough and complete, and will fully convey the concept of implementing the methods, devices, and / or systems described herein to those skilled in the art after understanding the present disclosure. Accordingly, known methods, devices, and materials are described in terms of their functionality and effects, rather than specific details of their structure and implementation.

[0045] Throughout the specification, when an element such as a layer, region, or substrate is referred to as being "on", "connected to", or "coupled to" another element, it can be directly on, directly connected to, or directly coupled to the other element, or one or more other elements can be interposed therebetween. Conversely, when an element is referred to as being "directly on", "directly connected to", or "directly coupled to" another element, there are no other elements interposed therebetween.

[0046] As used herein, the term "and / or," includes any one, and any combination, of the associated listed items; similarly "at least one of' includes any one of the associated listed items, and any combination of two or more of the associated listed items.

[0047] Although the terms such as "first," "second," and "third" can be used herein to describe various components, parts, regions, layers, or sections, these components, parts, regions, layers, or sections are not limited by the terms. Rather, the terms are only used to distinguish one component, part, region, layer, or section from another component, part, region, layer, or section. Thus, the first component, the first part, the first region, the first layer, or the first section mentioned in the examples described herein can also be called the second component, the second part, the second region, the second layer, or the second section without departing from the teachings of the examples described herein.

[0048] Spatially relative terms such as "on," "above," "below," "bottom," "top," and the like can be used herein for ease of description to describe one element's relationship to another element as illustrated in the figures. Such spatially relative terms are not intended to limit the scope of the examples described herein to the positions of the examples described in the figures. Rather, such spatially relative terms are intended to encompass different positions of the examples described herein, including positions that are opposite to those depicted in the figures. For example, if the device in the figures is turned over, elements described as being "above" or "on" other elements would then be oriented "below" or "on" the other elements. Accordingly, the term "above" encompasses both "above" and "below" as the device is oriented in the figures. The device can be oriented in other ways (e.g., rotated 90 degrees or at other orientations) and the spatially relative terms used herein are to be interpreted accordingly.

[0049] 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, the terms "a," "one," and "the" are intended to include both singular and plural forms. The terms "including," "comprising," and "having" are meant to be inclusive and mean that there can be additional features, quantities, operations, components, elements, and / or combinations thereof, but not excluding the presence of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0050] 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.

[0051] It should be noted that, in this document, the use of the word "may" in relation to examples, e.g., with respect to what examples can include or implement, means that at least one example includes or implements such feature, and that all examples are not limited to this.

[0052] Features of the examples described herein can be combined in a variety of ways as will be apparent after the disclosure is understood. Also, although examples described herein have a variety of configurations, other configurations are possible in light of the disclosure.

[0053] An aspect of the disclosure is to provide a reflective module having improved structural reliability against external impact and a camera module including the same.

[0054] Figure 1 is a perspective view of a camera module according to an embodiment of the disclosure.

[0055] Referring to Figure 1 , the camera module 100 according to an embodiment of the disclosure can convert the path of incident light at least once. In an embodiment, the camera module 100 can convert the incident light path from a first optical axis direction (X-axis direction) to a second optical axis direction (Z-axis direction). The camera module 100 can be elongated in the second optical axis direction (Z-axis direction).

[0056] Figure 2 is a schematic exploded perspective view of a camera module according to an embodiment of the disclosure.

[0057] Referring to Figure 2 , the camera module 100 according to an embodiment of the disclosure can include a housing 1100 and a case 1200 forming an appearance thereof, a first lens module 2000, a reflective module 3000, a second lens module 4000, and an image sensor 5000.

[0058] The housing 1100 can be a box-shaped member having an internal space. For example, the housing 1100 can be a box-shaped member elongated in the second optical axis direction (Z-axis direction), and the first lens module 2000, the reflective module 3000, the second lens module 4000, and the image sensor 5000 can be disposed in the housing 1100 in the second optical axis direction (Z-axis direction) in general. Alternatively, instead of being as shown in the drawings, a plurality of housings can be provided, and components can be disposed in the plurality of housings, alone or together with other components.

[0059] The case 1200 can be coupled to the top of the housing 1100 to cover the internal space of the housing 1100. The case 1200 can serve to protect components disposed in the housing 1100. Also, the case 1200 can serve to shield electromagnetic waves, and for this purpose, the case 1200 can be formed of a metal material.

[0060] The housing 1200 can include an opening 1210, and the first lens module 2000 can be disposed in the opening 1210. Accordingly, light reflected from an external object can be incident on the first lens module 2000.

[0061] The first lens module 2000, the reflection module 3000, the second lens module 4000, and the image sensor 5000 can be sequentially disposed in the case 1100 along an incident light path. That is, light reflected from an external object can be incident on the first lens module 2000, can sequentially pass through the reflection module 3000 and the second lens module 4000, and then reach the image sensor 5000.

[0062] The image sensor 5000 can be coupled to one side surface of the case 1100. One side surface of the case 1100 can include an opening 1151, the image sensor 5000 has an imaging surface, and the image sensor 5000 can be coupled to the case 1100 to expose the imaging surface to the inside space of the case 1100 through the opening 1151.

[0063] The image sensor 5000 can convert incident light into an electrical signal. The electrical signal generated from the image sensor 5000 can be output as an image through a display of the portable electronic device.

[0064] A filter unit 6000 can also be disposed in front of the image sensor 5000. The filter unit 6000 can function to block light of a specific wavelength region among light passing through the second lens module 4000 and incident on the image sensor 5000. For example, the filter unit 6000 can include an infrared (IR) cut filter to block light in an infrared wavelength region.

[0065] Further, a board 7000 on which a coil or the like is mounted can be disposed in the case 1100 or coupled to the case 1100 outside the case 1100.

[0066] The case 1100 can include a through-hole in a portion in which the board 7000 is disposed. The board 7000 can be coupled to the case 1100 to expose one surface of the board 7000 on which a coil or the like is mounted to the inside space of the case 1100 through the through-hole.

[0067] Figure 3 is a view illustrating an arrangement relationship of a first lens module, a reflection module, and a second lens module of a camera module according to an embodiment of the disclosure.

[0068] Referring to Figure 3The first lens module 2000 and the reflection module 3000 can be disposed in a first optical axis direction (X-axis direction), and the reflection module 3000 and the second lens module 4000 can be disposed in a second optical axis direction (Z-axis direction).

[0069] The present specification describes an embodiment in which the camera module 100 includes the first lens module 2000. However, in another embodiment, the camera module 100 can not include the first lens module 2000.

[0070] The first lens module 2000 or the second lens module 4000 can include one or more lenses that refract incident light.

[0071] The reflection module 3000 can include a reflection member 3100 that converts a path of incident light (see FIG. 2B). Figure 5 For example, the reflection member 3100 can be a prism, and the reflection member 3100 can not necessarily be a prism.

[0072] The reflection member 3100 can convert the path of the incident light from the substantially first optical axis direction (X-axis direction) to the substantially second optical axis direction (Z-axis direction). That is, the path of the incident light incident in the first optical axis direction (X-axis direction) can be changed on a reflection surface of the reflection member 3100 to the second optical axis direction (Z-axis direction). The first optical axis (X-axis) and the second optical axis (Z-axis) can intersect each other at the reflection surface of the reflection member 3100, and the intersection of the first optical axis (X-axis) and the second optical axis (Z-axis) can substantially coincide with the center of the reflection surface.

[0073] According to an embodiment of the disclosure, the camera module 100 can stabilize an optical image by moving the reflection module 3000, and can adjust a focus by moving the second lens module 4000.

[0074] Hereinafter, the first lens module 2000, the reflection module 3000, and the second lens module 4000 accommodated in the internal space of the housing 1100 are described in detail.

[0075] Figure 4 is an exploded perspective view of a first lens module according to an embodiment of the disclosure.

[0076] Referring to Figure 4 , the first lens module 2000 can include a first lens barrel 2100 that accommodates one or more lenses, a first lens holder 2300 mounted with the first lens barrel 2100, and a spacer 2200 disposed between the first lens barrel 2100 and the first lens holder 2300.

[0077] The first lens barrel 2100 can be disposed in the opening 1210 of the housing 1200. Accordingly, light reflected from an external object can be incident on a lens accommodated in the first lens barrel 2100, and the incident light can be incident as being substantially parallel to the first optical axis (X-axis).

[0078] The first lens module 2000 can be disposed together with the reflection module 3000 in the first optical axis direction (X-axis direction). Incident light incident on the first lens module 2000 can pass through the first lens module 2000 and then be incident on the reflection module 3000. To this end, the first lens holder 2300 and the spacer 2200 can each include an opening to allow the incident light to pass through.

[0079] An opening area of the spacer 2200 can be smaller than an opening area of the first lens holder 2300. In addition, the spacer 2200 can include a light blocking portion disposed along a periphery of the opening and block unnecessary light.

[0080] In an embodiment, the first lens module 2000 can be coupled to the case 1100 through the first lens holder 2300. In this case, the first lens module 2000 can be a fixed component that does not move when the camera module 100 performs an optical image stabilization function or an auto focus function. However, in another embodiment, the first lens module 2000 can be coupled to the reflection module 3000 and move together with the reflection module 3000 when the camera module 100 performs the optical image stabilization function.

[0081] Figure 5 is a perspective view of a reflection module according to an embodiment of the disclosure; Figure 6 is an exploded perspective view of a reflection module according to an embodiment of the disclosure; and Figure 7 is an exploded bottom perspective view of a reflection module according to an embodiment of the disclosure.

[0082] The reflection module 3000 can include a reflection member 3100 that converts a path of incident light passing through the first lens module 2000, a reflection holder 3200 on which the reflection member 3100 is mounted, and a rotation holder 3300 that supports the reflection holder 3200. The rotation holder 3300 can be supported by the case 1100.

[0083] The reflection member 3100 can be mounted on the reflection holder 3200 for disposing a reflection surface on a mounting surface of the reflection holder 3200.

[0084] The reflection bracket 3200 can be moved with respect to the rotation bracket 3300 while being mounted with the reflection member 3100. For example, the reflection bracket 3200 can be rotated with respect to the rotation bracket 3300 about a first rotation axis (Y axis). The first rotation axis (Y axis) can be substantially perpendicular to both the first optical axis (X axis) and the second optical axis (Z axis).

[0085] The first ball group 3430 can be disposed between the reflection bracket 3200 and the rotation bracket 3300. The reflection bracket 3200 can be rotatably supported by the rotation bracket 3300 via the first ball group 3430.

[0086] The first ball group 3430 can form a first rotation axis (Y axis), that is, a rotation axis of the reflection bracket 3200. For example, the first ball group 3430 can include two ball members spaced apart from each other in a first rotation axis direction (Y axis direction). The number of ball members included in the first ball group 3430 can be changed.

[0087] In an embodiment, the first ball group 3430 can be disposed between a plurality of first accommodation grooves 3220 disposed in the reflection bracket 3200 and a plurality of second accommodation grooves 3310 disposed in the rotation bracket 3300. The number of the first accommodation grooves 3220 and the second accommodation grooves 3310 can correspond to the number of ball members included in the first ball group 3430.

[0088] The first accommodation grooves 3220 and the second accommodation grooves 3310 can face each other in a second optical axis direction (Z axis direction), and the first ball group 3430 can be disposed between the first accommodation grooves 3220 and the second accommodation grooves 3310 facing each other. The first ball group 3430 can form the first rotation axis (Y axis) by being rotated in place while being accommodated in the first accommodation grooves 3220 and the second accommodation grooves 3310, respectively, at different portions thereof. To this end, at least one of the plurality of first accommodation grooves 3220 and the plurality of second accommodation grooves 3310 can include three inclined surfaces for supporting the ball members included in the first ball group 3430 by at least three points.

[0089] A magnetic material generating a magnetic force (e.g., magnetic attraction) can be disposed on each of the reflection bracket 3200 and the rotation bracket 3300 for stably supporting the reflection bracket 3200 by the rotation bracket 3300 while the first ball group 3430 is interposed between the reflection bracket 3200 and the rotation bracket 3300.

[0090] In an embodiment, a first magnetic material 3240 can be disposed in the reflection bracket 3200, and a second magnetic material 3340 can be disposed at the rotation bracket 3300. For example, the first magnetic material 3240 can be a traction magnet yoke, and the second magnetic material 3340 can be a traction magnet.

[0091] The first magnetic material 3240 and the second magnetic material 3340 can face each other in the second optical axis direction (Z-axis direction), and the magnetic attraction force can act in the second optical axis direction (Z-axis direction) in which the first magnetic material 3240 and the second magnetic material 3340 face each other. Accordingly, the reflection bracket 3200 can be supported by the rotation bracket 3300 in the second optical axis direction (Z-axis direction).

[0092] The reflection bracket 3200 can be supported by the rotation bracket 3300 while the first ball group 3430 is interposed between the reflection bracket 3200 and the rotation bracket 3300. In this state, the first auxiliary member 3500 can be coupled to the rotation bracket 3300. For example, the first auxiliary member 3500 can be coupled to the rotation bracket 3300 to surround a portion of the reflection bracket 3200, thereby preventing the reflection bracket 3200 from being separated from the rotation bracket 3300. Details of the first auxiliary member 3500 will be provided below.

[0093] The rotation bracket 3300 can move with the reflection bracket 3200 supported thereby with respect to the housing 1100. For example, the rotation bracket 3300 can rotate with respect to the housing 1100 about a second rotation axis (X-axis). The second rotation axis (X-axis) can be substantially parallel to the first optical axis.

[0094] The second ball group 3400 can be disposed between the rotation bracket 3300 and the housing 1100. The rotation bracket 3300 can be rotatably supported by the housing 1100 via the second ball group 3400.

[0095] The second ball group 3400 can include one rotation axis ball 3410 and a plurality of guide balls 3420. The rotation axis ball 3410 can form the second rotation axis (X-axis), and the plurality of guide balls 3420 can assist the rotation bracket 3300 to rotate about the second rotation axis (X-axis). For example, the plurality of guide balls 3420 can include two ball members spaced apart from the rotation axis ball 3410. The number of ball members included in the guide balls 3420 can vary.

[0096] In an embodiment, the rotation axis ball 3410 can be disposed between a third accommodation groove 3350 provided in the rotation bracket 3300 and a fourth accommodation groove 1120 provided in the housing 1100.

[0097] The third accommodation groove 3350 and the fourth accommodation groove 1120 can face each other in the first optical axis direction (X-axis direction), and the rotation shaft ball 3410 can be disposed between the third accommodation groove 3350 and the fourth accommodation groove 1120 facing each other. The rotation shaft ball 3410 can form the second rotation axis (X-axis) by rotating in place while being accommodated in the third accommodation groove 3350 and the fourth accommodation groove 1120 in different portions thereof, respectively. To this end, at least one of the third accommodation groove 3350 and the fourth accommodation groove 1120 can include three inclined surfaces for supporting the rotation shaft ball 3410 by at least three points.

[0098] Further, in an embodiment, a plurality of guide balls 3420 can be disposed between a plurality of first guide grooves 3320 disposed in the rotation support 3300 and a plurality of second guide grooves 1130 disposed in the housing 1100. The number of the first guide grooves 3320 and the second guide grooves 1130 can correspond to the number of the plurality of guide balls 3420.

[0099] The first guide groove 3320 and the second guide groove 1130 can face each other in the first optical axis direction (X-axis direction), and the plurality of guide balls 3420 can be disposed between the first guide groove 3320 and the second guide groove 1130 facing each other. The guide balls 3420 can perform a rolling motion while being accommodated in the first guide groove 3320 and the second guide groove 1130 in different portions thereof, respectively, to support the rotation of the rotation support 3300. The first guide groove 3320 and the second guide groove 1130 can extend substantially in the rotation direction of the rotation support 3300.

[0100] The reflection module 3000 can include a driving unit that generates a driving force for rotating the reflection support 3200 and the rotation support 3300. The reflection module 3000 can include a first driving unit 3230 that generates a driving force for rotating the reflection support 3200 about the first rotation axis (Y-axis) and a second driving unit 3330 that generates a driving force for rotating the rotation support 3300 about the second rotation axis (X-axis).

[0101] The first driving unit 3230 can include a first driving magnet 3231 and a first driving coil 3232. The first driving magnet 3231 and the first driving coil 3232 can face each other in the second optical axis direction (Z-axis direction).

[0102] The first driving magnet 3231 can be disposed on the reflection support 3200. For example, the reflection support 3200 can include an extension 3210 disposed between the housing 1100 and the rotation support 3300, and the first driving magnet 3231 can be disposed on the extension 3210 of the reflection support 3200.

[0103] The first driving coil 3232 can be disposed in the housing 1100. For example, the first driving coil 3232 can be mounted on one surface of the plate 7000 and coupled to the housing 1100 via the plate 7000.

[0104] The first driving magnet 3231 can be sequentially magnetized into a North (N) pole (or a South (S) pole), a neutral region, and an S pole (or an N pole) in the first optical axis direction (X-axis direction). The first driving coil 3232 can include one or more coils facing the first driving magnet 3231. The first driving magnet 3231 and the first driving coil 3232 can generate a driving force in a direction perpendicular to a direction in which the first driving magnet 3231 and the first driving coil 3232 face each other, and by the driving force, the reflection bracket 3200 can rotate about the first rotation axis (Y-axis).

[0105] The first driving unit 3230 can include a first position sensor 3233 that detects a position of the first driving magnet 3231. One or more first position sensors 3233 can be disposed, and the one or more first position sensors 3233 can be mounted on one surface of the plate 7000 to face the first driving magnet 3231 together with the first driving coil 3232.

[0106] The first position sensor 3233 can be a magnetic sensor that detects a position (amount of movement) of the first driving magnet 3231 by detecting a change in magnetic flux. In an embodiment, the first position sensor 3233 can face the neutral region of the first driving magnet 3231 and effectively detect a change in magnetic flux.

[0107] The first driving unit 3230 can include a first magnetic yoke 3234 disposed on a back surface of the first driving coil 3232. That is, the first magnetic yoke 3234 can be disposed on a surface of the plate 7000 opposite to one surface on which the first driving coil 3232 or the like is mounted. The first magnetic yoke 3234 can be a magnetic material and can focus magnetic lines of force generated in the first driving magnet 3231. Accordingly, the magnetic lines of force generated in the first driving magnet 3231 can pass through the first driving coil 3232 more strongly.

[0108] The second driving unit 3330 can include a second driving magnet 3331 and a second driving coil 3332. The second driving magnet 3331 and the second driving coil 3332 can face each other in the first optical axis direction (X-axis direction).

[0109] The second driving magnet 3331 can be disposed on the rotation bracket 3300. For example, the second driving magnet 3331 can be disposed on a bottom surface of the rotation bracket 3300.

[0110] The second driving coil 3332 can be disposed in the housing 1100. For example, the second driving coil 3332 can be mounted on one surface of the plate 7000 and coupled to the housing 1100 via the plate 7000.

[0111] The second driving magnet 3331 can include two magnets magnetized sequentially in an N pole (or an S pole), a neutral area, and an S pole (or an N pole) in a rotation direction of the rotation support 3300. One or more second driving coils 3332 can be disposed and the one or more second driving coils 3332 can face at least one of the magnets included in the second driving magnet 3331. The second driving magnet 3331 and the second driving coil 3332 can generate a driving force in a direction perpendicular to a direction in which the second driving magnet 3331 and the second driving coil 3332 face each other, and by the driving force, the rotation support 3300 can rotate about a second rotation axis (X axis).

[0112] The second driving unit 3330 can include a second position sensor 3333 that detects a position of the second driving magnet 3331. One or more second position sensors 3333 can be disposed and the one or more second position sensors 3333 can be mounted on one surface of the plate 7000 together with the second driving coil 3332 to face at least one of the magnets included in the second driving magnet 3331.

[0113] The second position sensor 3333 can be a magnetic sensor that detects a position (an amount of movement) of the second driving magnet 3331 by detecting a change in magnetic flux. In an embodiment, the second position sensor 3333 can face the neutral area of the second driving magnet 3331 and effectively detect a change in magnetic flux.

[0114] The second driving unit 3330 can include a second yoke 3334 disposed on a back surface of the second driving coil 3332. That is, the second yoke 3334 can be disposed on a surface of the plate 7000 opposite to one surface on which the second driving coil 3332 or the like is mounted.

[0115] In an embodiment, the second yoke 3334 can be a magnetic material. The second yoke 3334 can focus magnetic force lines generated in the second driving magnet 3331. Accordingly, the magnetic force lines generated in the second driving magnet 3331 can pass through the second driving coil 3332 more strongly.

[0116] Further, a magnetic force (e.g., magnetic attraction) can be generated between the second yoke 3334 and the second driving magnet 3331. For example, the second yoke 3334 can be attracted to the first optical axis direction (X-axis direction) in which the second yoke 3334 faces the second driving magnet 3331. That is, the second yoke 3334 can function as a traction yoke, and the rotation support 3300 can be supported by the case 1100 in the first optical axis direction (X-axis direction) by the magnetic force between the second yoke 3334 and the second driving magnet 3331.

[0117] Figure 8 FIG. 17 is a perspective view of a first auxiliary member according to an embodiment of the disclosure. Figures 9A to 9C FIG. 18 is a view illustrating a reflection support rotating about a first rotation axis according to an embodiment of the disclosure. Figures 10A to 10C FIG. 19 is a view illustrating a rotation support rotating about a second rotation axis according to an embodiment of the disclosure.

[0118] According to an embodiment of the disclosure, the reflection module 3000 can include a first auxiliary member 3500 to adjust a rotation range of the reflection module 3000 and to protect components thereof when an external impact is applied thereto.

[0119] The reflection support 3200 can be supported by the rotation support 3300 while the first ball group 3430 is interposed between the reflection support 3200 and the rotation support 3300. The rotation support 3300 can be supported by the case 1100 while the second ball group 3400 is interposed between the rotation support 3300 and the case 1100. In this state, the first auxiliary member 3500 can be coupled to the rotation support 3300 to surround the reflection support 3200.

[0120] The reflection support 3200 can include protrusions 3250 on both sides of the first rotation axis direction (Y-axis direction). The protrusions 3250 can extend in the first rotation axis direction (Y-axis direction). The protrusions 3250 can include first accommodation grooves 3220, and the first ball group 3430 can be disposed in the first accommodation grooves 3220.

[0121] The first auxiliary member 3500 can be coupled to the rotation support 3300 to surround the protrusions 3250 of the reflection support 3200. The first auxiliary member 3500 can be coupled to the rotation support 3300 while having a distance 3600 from the reflection support 3200 so as not to interfere with the rotation of the reflection support 3200 with respect to the rotation support 3300.

[0122] The first auxiliary member 3500 can include a frame 3510, and a first buffer member 3520 and a second buffer member 3530 disposed on the frame 3510.

[0123] The frame 3510 can be made of a material having structural rigidity, for example, stainless steel. However, the material of the frame 3510 is not limited thereto. The frame 3510 can be substantially "C" shaped, and one end and the other end are coupled to the rotation support 3300, respectively.

[0124] Referring to the drawings, the frame 3510 can include an inclined portion 3512 that is cut obliquely to be diagonal to a corner (hereinafter referred to as an upper corner) of the reflection support 3200 located at an upper side thereof. In an embodiment, the inclined portion 3512 can extend obliquely with respect to the first rotation axis (Y-axis) or the second rotation axis (X-axis). When an impact is applied to the frame 3510, the inclined portion 3512 can improve the structural rigidity of the frame 3510 by dispersing stress concentrated on the corner.

[0125] The inclined portion 3512 of the frame 3510 can face the protrusion 3250 of the reflection support 3200. The upper corner of the protrusion 3250 can be inclined to correspond to the inclined portion 3512. In detail, the protrusion 3250 can face a first buffer member 3520 to be described below around the inclined portion 3512, and the first buffer member 3520 can have a surface facing the protrusion 3250 and be inclined like the inclined portion 3512.

[0126] The first buffer member 3520 and the second buffer member 3530 can be disposed on the frame 3510. The first buffer member 3520 and the second buffer member 3530 can be coupled to the corners of the frame 3510. For example, the first buffer member 3520 can be disposed at the upper corner (i.e., the inclined portion 3512) of the frame 3510, and the second buffer member 3530 can be disposed at the lower corner of the frame 3510. That is, the first buffer member 3520 and the second buffer member 3530 can be disposed on the frame 3510 and spaced apart from each other in the first optical axis direction (X-axis direction or second rotation axis direction).

[0127] The first buffer member 3520 or the second buffer member 3530 can completely surround the upper corner or the lower corner of the frame 3510 and protrude toward the corresponding member (for example, the housing 1100). Accordingly, when an external impact is applied thereto, the first buffer member 3520 or the second buffer member 3530 can prevent direct collision between the housing 1100 and the rotation support 3300.

[0128] The first buffer member 3520 can form an upper corner of the first auxiliary member 3500 by replacing the inclined portion 3512 of the frame 3510. For example, the first buffer member 3520 can protrude substantially perpendicular to the inclined portion 3512.

[0129] A distance between the first buffering member 3520 and the housing 1100 in the second optical axis direction (Z-axis direction) can be closer than a distance between the rotation support 3300 and the housing 1100 in the second optical axis direction (Z-axis direction).

[0130] The second buffering member 3530 can protrude around a lower corner of the frame 3510 and toward a bottom surface of the housing 1100. For example, a distance between the second buffering member 3530 and the housing 1100 in the first optical axis direction (X-axis direction) can be closer than a distance between the rotation support 3300 and the housing 1100 in the first optical axis direction (X-axis direction). The second buffering member 3530 can prevent a direct collision between the rotation support 3300 facing in the first optical axis direction (X-axis direction) and the housing 1100 when an impact is applied thereto in the first optical axis direction (X-axis direction) and absorb the impact.

[0131] The first buffering member 3520 or the second buffering member 3530 can be made of an elastic material to continuously absorb an impact. However, a material of the first buffering member 3520 or the second buffering member 3530 is not limited thereto.

[0132] The first buffering member 3520 or the second buffering member 3530 can include a curved profile or a curved surface. For example, the first buffering member 3520 or the second buffering member 3530 can have an area facing a corresponding member, and at least a portion of the area can have a curved profile or a curved surface. Accordingly, the first buffering member 3520 or the second buffering member 3530 can effectively absorb an impact with the corresponding member caused by a rotation operation of the reflection module 3000.

[0133] Further, the first buffering member 3520 can include a damping hole 3525 passing through a thickness thereof, or the second buffering member 3530 can include a damping hole 3535 passing through a thickness thereof. The damping hole 3525 or 3535 can be formed in a portion of the first buffering member 3520 or the second buffering member 3530 other than a portion surrounding the frame 3510. The damping hole 3525 or 3535 can reduce noise occurring during an operation of the reflection module 3000.

[0134] Referring to Figures 9A to 9C, the reflection bracket 3200 can rotate with respect to the rotation bracket 3300 about a first rotation axis (Y axis). When the reflection bracket 3200 rotates, a distance 3600 between the reflection bracket 3200 and the first auxiliary member 3500 can change. When the reflection bracket 3200 rotates by a predetermined angle or more, the protrusion 3250 of the reflection bracket 3200 can come into contact with the first buffer member 3520 of the first auxiliary member 3500 facing the protrusion 3250. Accordingly, a rotation range of the reflection bracket 3200 can be limited. The reflection bracket 3200 can first come into contact with the first buffer member 3520, thereby preventing or mitigating a collision between the reflection bracket 3200 and the rotation bracket 3300 as a corresponding member.

[0135] Referring to Figures 10A to 10C , the rotation bracket 3300 can rotate with respect to the housing 1100 about a second rotation axis (X axis).

[0136] In an embodiment, a maximum rotation angle of the rotation bracket 3300 about the second rotation axis (X axis) can be greater than a maximum rotation angle of the above-described reflection bracket 3200 about the first rotation axis (Y axis). That is, the rotation bracket 3300 can rotate while having a greater rotation range than a rotation range of the reflection bracket 3200.

[0137] Meanwhile, another embodiment of the present disclosure can omit the rotation bracket 3300 of the reflection module 3000.

[0138] Figure 13 is a side view of a reflection module according to an embodiment of the present disclosure. Figure 14 is a side view of a reflection module according to another embodiment of the present disclosure.

[0139] Referring to Figure 13 , the reflection module 3000 according to an embodiment of the present disclosure can include a reflection bracket 3200 in which the reflection member 3100 is installed, and a rotation bracket 3300 that supports the reflection bracket 3200.

[0140] On the other hand, the reflection module 3000' according to another embodiment of the present disclosure can include a reflection member and a bracket 3200' in which the reflection member is installed. That is, the reflection module 3000' can omit the rotation bracket 3300.

[0141] In another embodiment of the present disclosure, the first auxiliary member 3500 can be coupled to the bracket 3200'. Except that the first auxiliary member 3500 is coupled to the bracket 3200' instead of the rotation bracket 3300, other features related to the first auxiliary member 3500 can be the same as described above.

[0142] In another embodiment of the disclosure, the bracket 3200' can rotate with respect to the housing 1100 about the first rotation axis (Y axis) or the second rotation axis (X axis).

[0143] Meanwhile, since the rotation bracket 3300 is omitted, according to the embodiment of the disclosure, components disposed at the rotation bracket 3300 provided in the reflection module 3000 can be disposed at the bracket 3200', and some components can have a changed position.

[0144] Figure 11 is an exploded perspective view of a second lens module according to an embodiment of the disclosure. Figure 12 is a bottom perspective view of a second lens module according to an embodiment of the disclosure.

[0145] Referring to Figure 11 and the like, the second lens module 4000 can include a second lens barrel 4100 accommodating one or more lenses and a second lens bracket 4200 mounted with the second lens barrel 4100.

[0146] The second lens barrel 4100 can include one or more lenses arranged in a second optical axis direction (Z axis direction). The second lens bracket 4200 can be supported by the housing 1100 while being mounted with the second lens barrel 4100.

[0147] A third ball group 4600 can be disposed between the second lens bracket 4200 and the housing 1100. The second lens bracket 4200 can be movably supported by the housing 1100 via the third ball group 4600.

[0148] The third ball group 4600 can include three ball members spaced apart from each other in the second optical axis direction (Z axis direction). The third ball group 4600 can include three or more ball members, and the number of ball members included in the third ball group 4600 can be changed.

[0149] The three ball members included in the third ball group 4600 can support one side or the other side of the second lens bracket 4200. That is, one side and the other side of the second lens bracket 4200 can be supported by at least one of the ball members.

[0150] The third ball group 4600 can be disposed between a plurality of third guide grooves 4230 provided in the second lens bracket 4200 and a plurality of fourth guide grooves 1140 provided in the housing 1100. The number of the third guide grooves 4230 and the fourth guide grooves 1140 can correspond to the number of ball members included in the third ball group 4600.

[0151] The third guide groove 4230 and the fourth guide groove 1140 can face each other in the first optical axis direction (X-axis direction), and the third ball group 4600 can be disposed between the third guide groove 4230 and the fourth guide groove 1140. The plurality of ball members included in the third ball group 4600 can each perform a rolling motion to support the movement of the second lens holder 4200 while being respectively accommodated in different portions of the third guide groove 4230 and the fourth guide groove 1140. The third guide groove 4230 and the fourth guide groove 1140 can each extend substantially in the movement direction of the second lens holder 4200, i.e., the second optical axis direction (Z-axis direction).

[0152] A magnetic material generating a magnetic force (e.g., magnetic attraction) can be disposed on each of the second lens holder 4200 and the housing 1100 for stably supporting the second lens holder 4200 by the housing 1100 while the third ball group 4600 is interposed between the second lens holder 4200 and the housing 1100.

[0153] In an embodiment, a third magnetic material 4510 can be disposed on the second lens holder 4200, and a fourth magnetic material 4520 can be disposed in the housing 1100. For example, the third magnetic material 4510 can be a traction magnet, and the fourth magnetic material 4520 can be a traction yoke.

[0154] The third magnetic material 4510 and the fourth magnetic material 4520 can face each other in the first optical axis direction (X-axis direction). The magnetic attraction can act in the first optical axis direction (X-axis direction) which is the direction in which the third magnetic material 4510 and the fourth magnetic material 4520 face each other. Accordingly, the second lens holder 4200 can be supported by the housing 1100 in the first optical axis direction (X-axis direction).

[0155] To support the stable movement of the second lens holder 4200, the third magnetic material 4510 can be disposed in a support area formed by the third ball group 4600. For example, the third ball group 4600 can include three ball members, and the third magnetic material 4510 can be disposed in a triangular support area having the three ball members as its vertices.

[0156] Meanwhile, when the second lens holder 4200 moves in the second optical axis direction (Z-axis direction), the third ball group 4600 can perform a rolling motion in the second optical axis direction (Z-axis direction), thereby continuously changing the support area formed by the three ball members. In an embodiment, the third magnetic material 4510 can be biased to one side of the second lens holder 4200 for continuously locating the third magnetic material 4510 in the support area formed by the third ball group 4600 during the movement of the second lens holder 4200.

[0157] Referring to Figure 12 The second lens holder 4200 can have one side supported at two points by two ball members of the third ball group 4600 and the other side supported at one point by one ball member. The third magnetic material 4510 can be biased toward one side of the second lens holder 4200. That is, the distance between the third magnetic material 4510 and one side of the second lens holder 4200 can be less than the distance between the third magnetic material 4510 and the other side of the second lens holder 4200. Accordingly, even when the second lens holder 4200 moves with a long stroke, the point of action of magnetic force acting between the third magnetic material 4510 and the fourth magnetic material 4520 can be stably positioned in the changed support area of the third ball group 4600.

[0158] Meanwhile, the second lens holder 4200 can be supported by the housing 1100 while the third ball group 4600 is interposed between the second lens holder 4200 and the housing 1100. In this state, the second auxiliary member 1700 can be coupled to the second lens holder 4200.

[0159] The second auxiliary member 1700 can be coupled to the housing 1100 to surround both sides of the second lens holder 4200, thereby preventing the second lens holder 4200 from being separated from the housing 1100 due to external impact. In addition, the second auxiliary member 1700 can include a buffer member protruding in a second optical axis direction (Z-axis direction) that is a moving direction of the second lens holder 4200. The buffer member can be provided on one surface of the second auxiliary member 1700 facing the housing 1100 and the other surface of the second auxiliary member 1700 facing the second lens holder 4200, thereby serving to adjust a moving range of the second lens holder 4200 and absorb impact.

[0160] The second lens module 4000 can include a third driving unit 4300 that generates a driving force to move the second lens holder 4200.

[0161] The third driving unit 4300 can include a third driving magnet 4310 and a third driving coil 4320. The third driving magnet 4310 and the third driving coil 4320 can face each other in a direction (Y-axis direction) perpendicular to both the first optical axis and the second optical axis.

[0162] The third driving magnet 4310 can be disposed on the second lens holder 4200. For example, the third driving magnet 4310 can include two magnets, and the two magnets can be disposed on both surfaces of the second lens holder 4200.

[0163] The third driving coil 4320 can be disposed in the housing 1100. For example, the third driving coil 4320 can be mounted on one surface of the plate 7000 and coupled to the housing 1100 via the plate 7000.

[0164] The third driving magnet 4310 can include two magnets sequentially magnetized into an N-pole (or an S-pole), a neutral region, and an S-pole (or an N-pole) in a moving direction of the second lens holder 4200. The third driving coil 4320 can include two coils respectively facing the two magnets. The third driving magnet 4310 and the third driving coil 4320 can generate a driving force in a direction perpendicular to a direction in which the third driving magnet 4310 and the third driving coil 4320 face each other. Through the driving force, the second lens holder 4200 can move in a second optical axis direction (Z-axis direction).

[0165] The third driving unit 4300 can include a third position sensor 4330 detecting a position of the third driving magnet 4310. One or more third position sensors 4330 can be disposed and mounted on one surface of the plate 7000 together with the third driving coil 4320 to face at least one of the magnets included in the third driving magnet 4310.

[0166] The third position sensor 4330 can be a magnetic sensor detecting a position (an amount of movement) of the third driving magnet 4310 by detecting a change in magnetic flux. In an embodiment, the third position sensor 4330 can face the neutral region of the third driving magnet 4310 and effectively detect a change in magnetic flux.

[0167] The third driving unit 4300 can include a third yoke 4340 disposed on a back surface of the third driving coil 4320. That is, the third yoke 4340 can be disposed on a surface of the plate 7000 opposite to one surface on which the third driving coil 4320 or the like is mounted. The third yoke 4340 can include a magnetic material and can focus magnetic force lines generated in the third driving magnet 4310. Accordingly, the magnetic force lines generated in the third driving magnet 4310 can pass through the third driving coil 4320 more strongly.

[0168] As described above, according to an embodiment of the disclosure, a camera module can improve its structural reliability against external impact, thereby securing improved optical image stabilization performance.

[0169] In addition, according to the present embodiment, a camera module can reduce noise generated when the camera module is impacted or driven.

[0170] While specific examples have been shown and described, it will be apparent to those skilled in the art, upon understanding the disclosure, that various changes in form and details can be made without departing from the spirit and scope of the claims and their equivalents. The examples described herein are to be understood as being descriptive in nature and not as being limiting in purpose. Descriptions of features or aspects within each example are to be considered as applicable to similar features or aspects within other examples. Proper results can be achieved if the described techniques are performed in a different order, and / or if components in the described systems, architectures, devices, or circuits are combined or substituted for one another or are supplemented, regardless of whether any such design choices are expressly described. Accordingly, the scope of the disclosure is not limited by the specific implementations described above, but only by the claims and their equivalents, and any variations that would be apparent to one of skill in the art upon reading the disclosure will be considered to fall within the scope of the disclosure as defined by the claims and their equivalents.

Claims

1. A reflective module, characterized in that The reflection module includes: a reflection member configured to convert an incident light path; a bracket on which the reflection member is disposed, and the bracket is configured to rotate about a first rotation axis and a second rotation axis perpendicular to the first rotation axis; a housing accommodating the bracket; and a first auxiliary member coupled to the bracket, and the first auxiliary member includes a frame and a plurality of buffer members disposed on the frame, wherein the frame includes an inclined portion having at least a portion extending obliquely with respect to the first rotation axis or the second rotation axis.

2. The reflective module of claim 1, wherein, The plurality of buffer members includes: a first buffer member disposed on the inclined portion; and a second buffer member spaced apart from the first buffer member.

3. The reflective module of claim 2, wherein, The second buffer member is spaced apart from the first buffer member in a second rotation axis direction.

4. The reflective module of claim 2, wherein, Each of the first buffer member and the second buffer member includes a portion facing the housing, and at least a portion of the portion facing the housing has a curved profile.

5. The reflective module of claim 2, wherein, Each of the first buffer member and the second buffer member includes one or more damping holes therethrough in a thickness direction.

6. The reflective module of claim 2, wherein, The first buffer member protrudes toward a side surface of the housing such that a distance between the housing and the first buffer member is closer than a distance between the housing and the bracket.

7. The reflective module of claim 2, wherein, The second buffer member protrudes toward a bottom surface of the housing such that a distance between the housing and the second buffer member is closer than a distance between the housing and the bracket.

8. The reflective module of claim 1, wherein, The bracket includes: a reflection bracket mounted with the reflection member and configured to rotate about the first rotation axis; and a rotation bracket supporting the reflection bracket and configured to rotate about the second rotation axis, and wherein the first auxiliary member is coupled to the rotation bracket to surround a portion of the reflection bracket.

9. The reflective module of claim 8, wherein, The reflection bracket includes a protrusion extending in a first rotation axis direction, and the first auxiliary member surrounds the protrusion.

10. The reflective module of claim 9, wherein, The first auxiliary member is configured to have at least a portion of the inclined portion face the protrusion, and a portion of the protrusion facing the first auxiliary member extends to be parallel to the inclined portion.

11. The reflective module of claim 8, wherein, The first auxiliary member is coupled to the rotation bracket to be spaced apart from the housing and the reflection bracket.

12. A camera module characterized by, The camera module includes: a housing; a reflection module disposed in the housing and including a reflection member; a lens module disposed in the housing and including at least one lens; and a first auxiliary member disposed on at least one side of the reflection module and including a frame and a plurality of buffer members disposed on the frame, wherein the frame has an inclined portion coupling at least one of the plurality of buffer members.

13. The camera module of claim 12, wherein, The reflection module further includes a bracket mounted with the reflection member and configured to rotate about a first rotation axis and a second rotation axis perpendicular to the first rotation axis, and wherein the first auxiliary member is coupled to the bracket.

14. The camera module of claim 12, wherein, The plurality of buffer members includes: a first buffer member disposed on the inclined portion; and a second buffer member spaced apart from the first buffer member. A second cushioning member spaced apart from the first cushioning member.

15. The camera module of claim 12, wherein, At least a portion of the plurality of cushioning members has a curved profile.

16. The camera module of claim 12, wherein, The plurality of cushioning members includes one or more dampening holes therethrough in a thickness direction.

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