Optical module and camera module

Abstract

An optical module and a camera module are provided. The optical module includes: a housing; a rotation bracket disposed in the housing and configured to rotate about a first rotation axis; a reflection bracket on which an optical member is mounted, the reflection bracket being supported by the rotation bracket, and configured to rotate about a second rotation axis perpendicular to the first rotation axis; the rotating shaft ball is arranged between the shell and the rotating bracket and forms a first rotating shaft; a first sensing magnet disposed on the rotation bracket at a position spaced apart from the rotation shaft ball in a direction perpendicular to both the first rotation shaft and the second rotation shaft; and a first position sensor disposed on the housing at a position spaced apart from the rotation shaft ball in a direction perpendicular to both the first rotation shaft and the second rotation shaft.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of priority from Korean Patent Application No. 10-2024-0046835 filed on April 5, 2024, in the Korean Intellectual Property Office, and Korean Patent Application No. 10-2024-0092981 filed on July 15, 2024, in the Korean Intellectual Property Office, the disclosures of which are incorporated herein by reference in their entirety for all purposes. Technical Field

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

[0004] Recently, most mobile devices including smartphones are equipped with a camera module.

[0005] Despite their small size, camera modules implemented in mobile devices are manufactured to perform operations such as, but not limited to, autofocus operations and shake correction operations.

[0006] The autofocus operation and the shake correction operation are achieved by driving the optical elements, and in the camera module, the actuator provides a force to drive the optical elements.

[0007] Among various actuators, VCM actuators, which consist of permanent magnets and coils, have the advantages of miniaturization and can achieve precise control, and are therefore commonly adopted in camera modules of many mobile devices.

[0008] However, due to space limitations of mobile devices, there is a problem in that it may be difficult to increase driving force and magnetic interference cannot be avoided because the coil and the position sensing element share a single permanent magnet. Summary of the Invention

[0009] This summary is provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

[0010] In general aspects, an optical module includes: a housing; a rotation support provided in the housing and configured to rotate about a first rotation axis; a reflection support on which an optical member is mounted and which is supported by the rotation support, the reflection support being configured to rotate about a second rotation axis perpendicular to the first rotation axis; a rotation axis ball provided between the housing and the rotation support and forming the first rotation axis; a first sensing magnet provided on the rotation support at a position spaced apart from the rotation axis ball in a direction perpendicular to both the first rotation axis and the second rotation axis; and a first position sensor provided on the housing at a position spaced apart from the rotation axis ball in the direction perpendicular to both the first rotation axis and the second rotation axis.

[0011] The optical module can further include: a first driving magnet provided on the rotation support; and a first driving coil provided in the housing to face the first driving magnet, wherein the first driving magnet is magnetized such that a surface of the first driving magnet facing the first driving coil includes a first polarity region having a first polarity and a second polarity region having a second polarity different from the first polarity.

[0012] The first sensing magnet can be magnetized such that a surface of the first sensing magnet facing the housing includes a first polarity region having a first polarity and a second polarity region having a second polarity different from the first polarity.

[0013] The first driving magnet can include two magnets, and wherein one of the two magnets of the first driving magnet is provided such that the first polarity region of the one magnet is adjacent to the first sensing magnet, and the other of the two magnets of the first driving magnet is provided such that the second polarity region of the other magnet is adjacent to the first sensing magnet.

[0014] The first sensing magnet can be provided such that the first polarity region of the first sensing magnet is adjacent to the one of the two magnets whose first polarity region is adjacent to the first sensing magnet, and the second polarity region of the first sensing magnet is adjacent to the other of the two magnets whose second polarity region is adjacent to the first sensing magnet.

[0015] The first position sensor can be provided to face the first sensing magnet.

[0016] The first sensing magnet can be magnetized such that a surface of the first sensing magnet facing the first position sensor includes a first polarity region and a second polarity region, wherein a neutral region can be provided between the first polarity region and the second polarity region, and wherein the first position sensor can be provided to face the neutral region.

[0017] The first position sensor can be spaced apart from the first sensing magnet in a direction perpendicular to both the first rotation axis and the second rotation axis.

[0018] In general aspects, an optical module includes: a housing; a rotation bracket disposed in the housing and configured to rotate about a first rotation axis; a reflection bracket on which an optical member is mounted, the reflection bracket being supported on the rotation bracket and configured to rotate about a second rotation axis perpendicular to the first rotation axis; a plurality of first driving magnets disposed on the rotation bracket; and a first sensing magnet disposed between the plurality of first driving magnets with a gap from the plurality of first driving magnets in a direction of the second rotation axis.

[0019] The plurality of first driving magnets and the first sensing magnet can be magnetized such that surfaces of the plurality of first driving magnets and the first sensing magnet facing the housing include a first polarity region having a first polarity and a second polarity region having a second polarity different from the first polarity.

[0020] The plurality of first driving magnets and the first sensing magnet can be disposed such that the same polarity regions of the first driving magnets and the first sensing magnet can be adjacent to each other.

[0021] A plurality of first driving coils can be disposed in the housing to face each of the plurality of first driving magnets.

[0022] A first position sensor can be disposed in the housing to face the first sensing magnet.

[0023] The optical module can further include a first position sensor disposed in the housing to be spaced apart from the first sensing magnet in a direction perpendicular to both the first rotation axis and the second rotation axis.

[0024] The plurality of first driving magnets can be disposed obliquely to each other such that a distance between first end portions of the plurality of first driving magnets adjacent to the first sensing magnet is closer than a distance between second end portions of the plurality of first driving magnets disposed away from the first sensing magnet.

[0025] The camera module can include the optical module and a lens module including one or more lenses disposed in an optical axis direction and configured to move in the optical axis direction.

[0026] In a general aspect, an optical module includes: a housing; a rotation support disposed in the housing and configured to rotate about a first rotation axis; a reflection support on which an optical member is mounted, the reflection support being supported by the rotation support and configured to rotate about a second rotation axis perpendicular to the first rotation axis; a rotation axis ball disposed between the housing and the rotation support and forming the first rotation axis; a first sensing magnet disposed on the rotation support at a position spaced apart from the rotation axis ball in a direction perpendicular to both the first rotation axis and the second rotation axis; and a driving magnet including a first driving magnet and a second driving magnet, wherein the first driving magnet, the first sensing magnet, and the second driving magnet are disposed in order along an axis perpendicular to the first rotation axis.

[0027] Other features and aspects will become apparent from the following detailed description, drawings and claims. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a perspective view of an exemplary camera module according to one or more embodiments.

[0029] Figure 2 is a schematic exploded perspective view of an exemplary camera module according to one or more embodiments.

[0030] Figure 3 is a perspective view showing an arrangement relationship of a first lens module, a folding module, and a second lens module according to one or more embodiments.

[0031] Figure 4 is a perspective view of an exemplary first lens module according to one or more embodiments.

[0032] Figure 5 is a perspective view of an exemplary folding module according to one or more embodiments.

[0033] Figure 6 is an exploded perspective view of an exemplary folding module according to one or more embodiments.

[0034] Figure 7 is an exploded perspective view of the folding module viewed from a different angle than Figure 6 .

[0035] Figure 8 is a plan view showing a first driving portion and a first position sensing portion according to one or more embodiments.

[0036] Figure 9 , Figure 10 and Figure 11 are plan views showing a second driving portion and a second position sensing portion according to one or more embodiments.

[0037] Figure 12 is an exploded perspective view of an exemplary second lens module according to one or more embodiments.

[0038] Figure 13 is a bottom perspective view of an exemplary second lens module according to one or more embodiments.

[0039] Throughout the drawings and specific embodiments, identical reference numerals designate identical elements, unless otherwise described. The drawings can not be to scale and the dimensions, proportions, and details of the components in the drawings can be exaggerated for clarity and convenience only. Thus, the drawings and detailed description are to be regarded as illustrative and not restrictive. DETAILED DESCRIPTION

[0040] The following detailed description is presented to aid the reader in gaining a thorough understanding of the methods, apparatuses, and / or systems described herein. However, various changes, modifications, and equivalents can be used, and the

[0041] Although terms such as "first," "second," and "third" or A, B, (a), (b), etc. can be used herein to describe various elements, components, regions, layers or sections, these elements, components, regions, layers or sections are not limited by these terms. Each of these terms is not used to define the nature, order or sequence of, for example, a corresponding element, component, region, layer or section, but is only used to distinguish a corresponding element, component, region, layer or section from another element, component, region, layer or section. Therefore, a first element, component, region, layer or section mentioned in examples described herein can also be referred to as a second element, component, region, layer or section without departing from the teachings of the examples.

[0042] Throughout this specification, when a component, element, or layer is described as being “on,” “connected to,” “coupled to,” or “engaged to” another component, element, or layer, it may be directly “on” (e.g., in contact with), directly “connected to,” directly “coupled to,” or directly “engaged to” the other component, element, or layer, or one or more other components, elements, or layers may reasonably be present between them. When a component, element, or layer is described as being “directly on,” “directly connected to,” “directly coupled to,” or “directly engaged to” another component, element, or layer, there are no other components, elements, or layers between them. Similarly, expressions such as “between” and “immediately between,” as well as “adjacent to” and “immediately adjacent to,” may also be interpreted as described above.

[0043] The terms used herein are only used to describe various examples and are not used to limit the present disclosure. The terms "one", "a kind of" and "the" are intended to also include plural meanings, unless the context clearly indicates otherwise. As non-limiting examples, the terms "include", "comprising" and "having" specify the existence of the stated features, quantities, operations, components, elements and / or their combinations, but do not exclude the existence or addition of one or more other features, quantities, operations, components, elements and / or their combinations, nor exclude the existence of alternatives that replace the features, quantities, operations, components, elements and / or their combinations. In addition, although an embodiment can set forth such terms "include", "comprising" and "having" specify the existence of the features, quantities, operations, components, elements and / or their combinations, there can be other embodiments in which one or more of the features, quantities, operations, components, elements and / or their combinations are not present.

[0044] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more of the associated listed items. The phrases "at least one of A, B, and C," etc. are intended to have separate meanings, and these phrases "at least one of A, B, and C," etc. also include examples in which one or more of A, B, and C can be present (e.g., any combination of one or more of A, B, and C), unless the corresponding description and implementation require that such a list (e.g., "at least one of A, B, and C") be interpreted as having a combined meaning.

[0045] The features described herein can be implemented in different ways and are not to be construed as limited to the examples described herein. Rather, these examples are provided as a description of implementations of the methods, apparatuses, and / or systems described herein and are not intended to be limiting. In the description herein, the use of "may" (e.g., about an example or implementation can include or implement what) means that there is at least one example or implementation that includes or implements the feature, and that not all examples and implementations are so limited. The terms "example" or "implementation" used herein have the same meaning (e.g., the phrase "in one example" has the same meaning as "in one implementation," and "in one or more examples" has the same meaning as "in one or more implementations").

[0046] In one or more examples, the X-direction, the Y-direction, and the Z-direction mean a direction parallel to the X-axis, a direction parallel to the Y-axis, and a direction parallel to the Z-axis, respectively, as shown in the drawings. In addition, unless otherwise stated, the X-direction is a concept including the +X-axis direction and the -X-axis direction, and the concept also applies to the Y-direction and the Z-direction.

[0047] In one or more examples, two directions (or axes) parallel or perpendicular to each other also include an example in which the two directions (or axes) are substantially parallel or substantially perpendicular. For example, if a first axis and a second axis are perpendicular to each other, it means that the first axis and the second axis form an angle of 90 degrees or close to 90 degrees.

[0048] Hereinafter, one or more embodiments will be described in detail with reference to the accompanying drawings. However, the spirit of one or more embodiments is not limited to the presented embodiments. For example, a person skilled in the art who understands the spirit of one or more embodiments can suggest other embodiments included in the scope of examples by adding, changing, or deleting components, etc., and the other embodiments will also be included in the scope of the present disclosure.

[0049] One or more embodiments relate to an optical module and a camera module, and the camera module can be mounted on a portable electronic device such as, but not limited to, a mobile communication terminal, a smart phone, a tablet personal computer (PC), etc.

[0050] The optical module can be a configuration including an optical member. In one or more examples, the optical module can be understood to include one or more of a lens module, a folding module (a reflection module), and an image sensor module. In addition, the optical member can be understood to refer to one or more of a lens, a reflection element, and an image sensor.

[0051] One or more examples can provide a camera module having improved shake correction performance. Specifically, one or more examples can provide a camera module having increased driving force and reduced magnetic interference.

[0052] Figure 1 is a perspective view of an exemplary camera module 100 according to one or more embodiments.

[0053] A camera module 100 according to one or more embodiments can have a length in a direction (Z direction) perpendicular to a direction (X direction) in which light is incident.

[0054] The direction (X direction) in which light is incident can be parallel to a thickness direction (X direction) of the camera module 100. In addition, the thickness direction (X direction) of the camera module 100 can be parallel to a thickness direction of a mobile device in which the camera module 100 is employed. That is, according to one or more embodiments, even if the length of the camera module 100 increases, the thickness of the mobile device does not increase.

[0055] Figure 2 is a perspective view of an exemplary camera module 100 according to one or more embodiments, and Figure 3 is a perspective view illustrating an arrangement relationship of a first lens module 2000, a folding module 3000, and a second lens module 4000 according to one or more embodiments.

[0056] According to one or more embodiments, the camera module 100 can be configured to change a travel path of light. For example, light incident into the camera module 100 can be changed within the camera module 100 to a direction (Z direction) perpendicular to an incident direction (X direction).

[0057] Referring to Figure 2 , the camera module 100 can include a folding module 3000 that changes a travel path of light incident onto the camera module 100 by about 90 degrees.

[0058] The folding module 3000 can be provided with a reflection member 3100 Figure 6 to change the travel path of light.

[0059] In addition, the camera module 100 can include a plurality of lens modules 2000 and 4000 having one or more lenses L (see Figure 4 ).

[0060] The plurality of lens modules 2000 and 4000 can include a first lens module 2000 disposed in front of the folding module 3000 based on a travel path of light and a second lens module 4000 disposed behind the folding module 3000.

[0061] In an embodiment, an optical axis (X-axis) of the first lens module 2000 and an optical axis (Z-axis) of the second lens module 4000 can be different from each other. For example, the optical axis (X-axis) of the first lens module 2000 and the optical axis (Z-axis) of the second lens module 4000 can be perpendicular to each other.

[0062] In an embodiment, the camera module 100 can perform an auto focus operation and a shake correction operation. The auto focus operation can be implemented in a manner of driving the second lens module 4000, and the shake correction operation can be implemented in a manner of driving the first lens module 2000 and the folding module 3000.

[0063] The first lens module 2000, the folding module 3000, and the second lens module 4000 can be accommodated in the housing 1100, individually or together.

[0064] Referring to Figure 2 The camera module 100 can include a housing 1100 that accommodates the first lens module 2000, the folding module 3000, and the second lens module 4000.

[0065] The housing 1100 can be a box-shaped member having an open upper portion. The first lens module 2000, the folding module 3000, and the second lens module 4000 can be disposed in the housing 1100.

[0066] The camera module 100 can include an image sensor 5000 that converts light incident on the camera module 100 into an electrical signal.

[0067] In an example, the image sensor 5000 can be mounted on a printed circuit board and disposed in the housing 1100.

[0068] Light incident on the camera module 100 can pass through the first lens module 2000, the folding module 3000, and the second lens module 4000 in sequence, and then can be received by the image sensor 5000. The image sensor 5000 can generate an electrical signal corresponding to light incident on the image sensor 5000.

[0069] A filter part 6000 can be additionally disposed between the second lens module 4000 and the image sensor 5000.

[0070] The filter part 6000 can have a function of blocking light in an infrared region among light passing through the second lens module 4000 and incident on the image sensor 5000.

[0071] The camera module 100 can include a cover 1200 that covers the open upper portion of the housing 1100.

[0072] Since the housing 1200 is coupled to the case 1100, components disposed in the case 1100 can be protected from the external environment.

[0073] In an example, the housing 1200 can include an opening 1210 through which light is incident from the outside.

[0074] In an embodiment, the first lens module 2000 can be disposed in the opening 1210, and external light can be incident on the first lens module 2000.

[0075] Figure 4 is a perspective view of an example first lens module 2000 according to one or more embodiments.

[0076] The first lens module 2000 can include a first lens barrel 2100.

[0077] One or more lenses L can be mounted within the first lens barrel 2100 in a first optical axis direction (X-axis direction).

[0078] The first lens barrel 2100 can be coupled to the folding module 3000 and can be integrally driven with the folding module 3000 during shake correction.

[0079] Figure 5 is a perspective view of a folding module 3000 according to one or more embodiments, Figure 6 is an exploded perspective view of the folding module 3000 according to one or more embodiments, and Figure 7 is an exploded perspective view of the folding module 3000 viewed from a different angle than Figure 6

[0080] The folding module 3000 can include a reflection member 3100, a reflection bracket 3200 to which the reflection member 3100 is coupled, and a rotation bracket 3300 that supports the reflection bracket 3200.

[0081] In an example, the reflection member 3100 can be a mirror or a prism.

[0082] The reflection member 3100 can include a reflection surface 3110 that reflects light incident in a first optical axis direction (X-axis direction) to a second optical axis direction (Z-axis direction). The reflection surface 3110 can be disposed obliquely with respect to the first optical axis direction (X-axis direction) and the second optical axis direction (Z-axis direction). If the reflection member 3100 is a prism, it can also include an incident surface 3120 and an exit surface 3130.

[0083] Although not shown in the drawings, at least one lens having positive refractive power (hereinafter referred to as a correction lens) can be coupled with the reflection member 3100.​

[0084] In an example, a correction lens can be attached to the exit surface 3130 of the reflection member 3100 and can rotate together with the reflection member 3100. In this example, an error occurring in the optical path during shake correction can be compensated for.

[0085] The reflection member 3100 and the first lens module 2000 can be coupled in the reflection bracket 3200.

[0086] The first lens module 2000 and the reflection member 3100 can be disposed in a first optical axis direction (X-axis direction), and a center of the lens L and a center of the reflection surface 3110 can be disposed on the first optical axis (X-axis).

[0087] The reflection bracket 3200 can be supported by the rotation bracket 3300 to be rotated.

[0088] In an embodiment, the reflection bracket 3200 can rotate about a first rotation axis (Y-axis) with respect to the rotation bracket 3300. At this time, the reflection member 3100 and the first lens module 2000 can rotate about the first rotation axis (Y-axis) together with the reflection bracket 3200.

[0089] The folding module 3000 can include a driving portion (hereinafter referred to as a "first driving portion") that drives the reflection bracket 3200.

[0090] The first driving portion can include a first driving magnet 3231 and a first driving coil 3232.

[0091] The first driving magnet 3231 can be disposed in the reflection bracket 3200, and the first driving coil 3232 can be disposed in the housing 1100 through the main substrate 7000.

[0092] The first driving magnet 3231 and the first driving coil 3232 can be disposed to face each other in a second optical axis direction (Z-axis direction). The reflection bracket 3200 can include an extension portion 3210 extending to a rear portion of the rotation bracket 3300 to face the housing 1100, and the first driving magnet 3231 can be disposed in the extension portion 3210.

[0093] Referring to Figure 8 , the first driving magnet 3231 can be magnetized such that one surface facing the first driving coil 3232 can have both N and S poles. For example, the one surface of the first driving magnet 3231 can be provided with an N pole (or a first polarity region) P1, a neutral region N1, and an S pole (or a second polarity region) P2 in the first optical axis direction (X-axis direction).

[0094] The first driving coil 3232 can be disposed in the housing 1100 to face the first driving magnet 3231 while being disposed on the main substrate 7000. The housing 1100 can include a through-hole, and the first driving coil 3232 can be disposed in the through-hole to directly face the first driving magnet 3231.

[0095] When power is supplied to the first driving coil 3232, the first driving coil 3232 and the first driving magnet 3231 can generate a driving force in a direction perpendicular to a direction in which they face each other, for example, in the first optical axis direction (X-axis direction), and the reflection bracket 3200 can be rotated about the first rotation axis (Y-axis) by the driving force.

[0096] Since the first driving magnet 3231 is disposed in the reflection bracket 3200, it can become a moving member that rotates together with the reflection bracket 3200, and the first driving coil 3232 can become a fixed member that does not move.

[0097] The first ball member 3430 that supports the rotation of the reflection bracket 3200 can be disposed between the reflection bracket 3200 and the rotation bracket 3300.

[0098] The first ball member 3430 can form the first rotation axis (Y-axis). For example, the first ball member 3430 can include a plurality of balls spaced apart in the first rotation axis direction (Y-axis direction).

[0099] A portion of the reflection member 3100 can overlap the first ball member 3430 when viewed in the first rotation axis direction (Y-axis direction). For example, a virtual line connecting the first ball member 3430 in the first rotation axis direction (Y-axis direction) can overlap the reflection surface 3110.

[0100] The reflection bracket 3200 and the rotation bracket 3300 can be respectively provided with receiving grooves to receive different portions of the first ball member 3430. In an embodiment, the reflection bracket 3200 can be provided with a first receiving groove 3220, and the rotation bracket 3300 can be provided with a second receiving groove 3310 facing the first receiving groove 3220.

[0101] The first ball member 3430 can form a rotation axis of the reflection bracket 3200 while being rotated in place, the first ball member 3430 being accommodated in the first receiving groove 3220 and the second receiving groove 3310.

[0102] In order to prevent separation of the first ball member 3430, an attractive force can be applied between the reflection bracket 3200 and the rotation bracket 3300. To this end, a first magnetic material 3240 and a second magnetic material 3340 can be disposed to face each other in the reflection bracket 3200 and the rotation bracket 3300, respectively.

[0103] In an embodiment, the first magnetic material 3240 disposed in the reflection bracket 3200 can be a traction magnet yoke, and the second magnetic material 3340 disposed in the rotation bracket 3300 can be a traction magnet. However, in another embodiment, both the first magnetic material 3240 and the second magnetic material 3340 can be traction magnets.

[0104] 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 can generate an attractive force in the direction in which they face each other.

[0105] Due to the attractive force acting between the first magnetic material 3240 and the second magnetic material 3340, the reflection bracket 3200 can be supported on the rotation bracket 3300 in the second optical axis direction (Z-axis direction). In addition, the first ball member 3430 can remain in contact with the reflection bracket 3200 and the rotation bracket 3300.

[0106] Figure 8 FIG. 1B is a plan view illustrating a first driving part and a first position sensing part according to one or more embodiments.

[0107] The folding module 3000 can include a position sensing part (hereinafter referred to as a first position sensing part) that detects a position of the reflection bracket 3200.

[0108] The first position sensing part can include a first sensing magnet 3234 and a first position sensor 3233. In a non-limiting example, the first position sensor 3233 can be a Hall sensor.

[0109] The first sensing magnet 3234 can be disposed on the extension part 3210 of the reflection bracket 3200. For example, the first sensing magnet 3234 can be disposed at a position spaced apart from the first driving magnet 3231 in the first optical axis direction (X-axis direction).

[0110] The first position sensor 3233 can be disposed in the housing 1100 through the main substrate 7000. For example, the first position sensor 3233 can be disposed at a position spaced apart from the first driving coil 3232 in the first optical axis direction (X-axis direction).

[0111] The first sensing magnet 3234 can be magnetized such that one surface facing the first position sensor 3233 can have an N-pole or an S-pole.

[0112] In an embodiment, one surface of the first sensing magnet 3234 can have a polarity opposite to a polarity of a polarity region of the first driving magnet 3231 adjacent to the first sensing magnet 3234.

[0113] In an example, when the first sensing magnet 3234 is disposed at the lower side of the first driving magnet 3231 based on the drawing, one surface of the first sensing magnet 3234 can have an N-pole (or a first polarity region) P1. As another example, when the first sensing magnet 3234 is disposed at the upper side of the first driving magnet 3231 based on the drawing, one surface of the first sensing magnet 3234 can have an S-pole (or a second polarity region) P2.

[0114] The camera module 100 according to one or more embodiments can sufficiently increase the size of the first driving coil 3232 facing the first driving magnet 3231 and increase the driving force by separately providing the first sensing magnet 3234 sensing the position of the reflection bracket 3200.

[0115] The first position sensor 3233 can be disposed at a position detecting a change in the position of the first sensing magnet 3234.

[0116] In an embodiment, the first position sensor 3233 can be disposed to face a gap between the first driving magnet 3231 and the first sensing magnet 3234. In this example, the gap between the first driving magnet 3231 and the first sensing magnet 3234 can function as a neutral region N1.

[0117] When power is supplied to the first driving coil 3232, the position of the reflection bracket 3200 detected by the first position sensor 3233 can be different from the actual position of the reflection bracket 3200 due to a magnetic field generated from the first driving coil 3232.

[0118] However, according to one or more embodiments, the first position sensor 3233 can be spaced apart from the first driving coil 3232 so that it can be less affected by the magnetic field of the first driving coil 3232, and thus the sensing accuracy of the first position sensor 3233 can be improved.

[0119] In an example, although not shown in the drawing, the first sensing magnet 3234 can be integrally formed with the first driving magnet 3231. In an example, the first driving magnet 3231 can further include a neutral region N1 and an N-pole (or a first polarity region) P1 or an S-pole (or a second polarity region) P2 in the first optical axis direction (X-axis direction).

[0120] In this example, the first position sensor 3233 can be disposed to face the neutral region disposed when the first driving magnet 3231 extends in the first optical axis direction (X-axis direction).

[0121] Referring again to Figure 6The rotation bracket 3300 on which the reflection bracket 3200 is supported can be supported on the housing 1100 to be rotatable. In an embodiment, the rotation bracket 3300 can rotate with respect to the housing 1100 about a second rotation axis (X axis) perpendicular to the first rotation axis (Y axis). In this example, the reflection bracket 3200, the reflection member 3100 coupled to the reflection bracket 3200, and the first lens module 2000 can rotate with the rotation bracket 3300 about the second rotation axis (X axis).

[0122] The folding module 3000 can include a driving portion (hereinafter referred to as a second driving portion) that drives the rotation bracket 3300.

[0123] The second driving portion can include second driving magnets 3331 (for example, 3331a and 3331b) and a second driving coil 3332 (for example, 3332a and 3332b). Figure 9 Figure 9 The second driving magnets 3331 and the second driving coil 3332 can be provided in various numbers.

[0124] In a non-limiting example, each of the second driving magnets 3331 and the second driving coil 3332 can be provided. However, this is merely an example, and the second driving magnets 3331 and the second driving coil 3332 can be provided in various numbers.

[0125] The second driving magnets 3331 can be disposed in the rotation bracket 3300, and the second driving coil 3332 can be disposed in the housing 1100 through the main substrate 7000.

[0126] The second driving magnets 3331 and the second driving coil 3332 can be disposed to face each other in the first optical axis direction (X axis direction).

[0127] The second driving magnets 3331 can be disposed on a bottom surface of the rotation bracket 3300. In an embodiment, the two magnets 3331a and 3331b constituting the second driving magnets 3331 can be disposed obliquely with respect to each other. In an example, a first distance between first end portions of the two magnets 3331a and 3331b can be closer than a second distance between second end portions of the two magnets 3331a and 3331b.

[0128] The second driving coil 3332 can be disposed in the housing 1100 to face the second driving magnets 3331 while being disposed on the main substrate 7000. The housing 1100 can include a through-hole, and the second driving coil 3332 can be disposed in the through-hole to directly face the second driving magnets 3331. In this example, the second driving magnets 3331 and the second driving coil 3332 can face each other one-to-one.

[0129] ​The second driving magnet 3331 can be magnetized such that one surface facing the second driving coil 3332 can have both N and S poles. In an example, the one surface of the second driving magnet 3331 can be provided with an N pole (or a first polarity region) P1, a neutral region N1, and an S pole (or a second polarity region) P2 in a length direction of the magnet.

[0130] In an embodiment, one of the two magnets 3331a and 3331b constituting the second driving magnet 3331 can be provided with an N pole (or a first polarity region) P1, a neutral region N1, and an S pole (or a second polarity region) P2 in a length direction from one end to the other, and the other can be provided with an S pole (or a second polarity region) P2, a neutral region N1, and an N pole (or a first polarity region) P1 in a length direction from one end to the other.

[0131] When power is supplied to the second driving coil 3332, the second driving coil 3332 and the second driving magnet 3331 can generate a driving force in a direction perpendicular to the direction in which they face each other, and the rotation support 3300 can be rotated about the second rotation axis (X axis) by the driving force.

[0132] Since the second driving magnet 3331 can be disposed in the rotation support 3300, it can become a moving member that rotates together with the rotation support 3300, and the second driving coil 3332 can become a fixed member that cannot move.

[0133] A second ball member supporting rotation of the rotation support 3300 can be disposed between the rotation support 3300 and the housing 1100.

[0134] The second ball member can include one rotation axis ball 3410 forming the second rotation axis (X axis). The second rotation axis (X axis) can pass through the rotation axis ball 3410. In addition, the second ball member can include a plurality of guide balls 3420 spaced apart from the rotation axis ball 3410.

[0135] The rotation support 3300 and the housing 1100 can be respectively provided with receiving grooves receiving different portions of the rotation axis ball 3410. In an embodiment, the rotation support 3300 can be provided with a third receiving groove 3321, and the housing 1100 can be provided with a fourth receiving groove 1121 facing the third receiving groove 3321.

[0136] The rotation axis ball 3410 can form a rotation axis of the rotation support 3300 by rotating in place while being accommodated in the third receiving groove 3321 and the fourth receiving groove 1121.

[0137] Also, the rotation support 3300 and the housing 1100 can be respectively provided with a plurality of guide grooves which accommodate different portions of the plurality of guide balls 3420. In an embodiment, the rotation support 3300 can be provided with a first guide groove 3323, and the housing 1100 can be provided with a second guide groove 1123 which faces the first guide groove 3323.

[0138] The first guide groove 3323 and the second guide groove 1123 can be straight or curved in shape, and have a length in a rotation direction of the rotation support 3300.

[0139] The plurality of guide balls 3420 can support the rotation of the rotation support 3300 by rolling in the first guide groove 3323 and the second guide groove 1123 in the rotation direction of the rotation support 3300.

[0140] In order to prevent separation of the second ball member, an attractive force can be applied between the rotation support 3300 and the housing 1100. For this purpose, a third magnetic material 3335 can be disposed in the housing 1100 to face the second driving magnet 3331.

[0141] In an embodiment, the third magnetic material 3335 disposed in the housing 1100 can be a traction yoke.

[0142] The third magnetic material 3335 can be disposed to cover the outer side surface of the main substrate 7000. That is, the third magnetic material 3335 can face the second driving magnet 3331 with the second driving coil 3332 therebetween.

[0143] The second driving magnet 3331 and the third magnetic material 3335 can face each other in the first optical axis direction (X-axis direction), and can generate an attractive force in the direction in which they face each other.

[0144] Due to the attractive force acting between the second driving magnet 3331 and the third magnetic material 3335, the rotation support 3300 can be supported on the housing 1100 in the first optical axis direction (X-axis direction). Also, the second ball member can maintain a state of being in contact with the rotation support 3300 and the housing 1100.

[0145] Also, the third magnetic material 3335 can form a magnetic circuit with the second driving magnet 3331. The third magnetic material 3335 can concentrate the magnetic flux generated from the second driving magnet 3331.

[0146] Figures 9 to 11 FIG. 17 is a plan view illustrating a second driving part and a second position sensing part according to one or more embodiments.

[0147] The folding module 3000 can include a position sensing portion (hereinafter referred to as a second position sensing portion) that detects a position of the rotation support 3300.

[0148] The second position sensing portion can include a second sensing magnet 3334 and a second position sensor 3333. In an example, the second position sensor 3333 can be a Hall sensor.

[0149] The second sensing magnet 3334 can be disposed on a bottom surface of the rotation support 3300 at a position spaced apart from the rotation shaft ball 3410 in the second optical axis direction (Z-axis direction). Accordingly, the second sensing magnet 3334 can be disposed substantially between the two second driving magnets 3331a and 3331b to have a gap from the two second driving magnets 3331a and 3331b in the first rotation axis (Y-axis) direction.

[0150] The second position sensor 3333 can be disposed in the housing 1100 through the main substrate 7000. In an example, the second position sensor 3333 can be disposed at a position spaced apart from the rotation shaft ball 3410 in the second optical axis direction (Z-axis direction). Accordingly, the second position sensor 3333 can be disposed substantially between the two second driving coils 3332a and 3332b.

[0151] The second sensing magnet 3334 can be magnetized such that one surface facing the second position sensor 3333 or the housing 1100 can have an N-pole and an S-pole. In an example, the one surface of the second sensing magnet 3334 can not necessarily face the second position sensor 3333.

[0152] In an embodiment, the one surface of the second sensing magnet 3334 can be provided with an N-pole (or a first polarity region) P1, a neutral region N1, and an S-pole (or a second polarity region) P2 in a length direction of the magnet.

[0153] The neutral region N1 of the second sensing magnet 3334 can be disposed at a position spaced apart from the rotation shaft ball 3410 in the second optical axis direction (Z-axis direction).

[0154] In an embodiment, the second sensing magnet 3334 and the second driving magnet 3331 can be disposed such that each of adjacent polarity regions has the same polarity.

[0155] Referring to Figure 9 , the first polarity region P1 of the second sensing magnet 3334 can be disposed adjacent to the first polarity region P1 of the driving magnet 3331b of the second driving magnet 3331, and the second polarity region P2 of the second sensing magnet 3334 can be disposed adjacent to the second polarity region P2 of the driving magnet 3331a of the second driving magnet 3331.

[0156] In another embodiment, the second sensing magnet 3334 and the second driving magnet 3331 can be disposed such that adjacent polarity regions have opposite polarities.

[0157] Referring to Figure 10 The first polarity region P1 of the second sensing magnet 3334 can be disposed adjacent to the second polarity region P2 of the driving magnet 3331a of the second driving magnet 3331, and the second polarity region P2 of the second sensing magnet 3334 can be disposed adjacent to the first polarity region P1 of the driving magnet 3331b of the second driving magnet 3331.

[0158] The camera module 100 according to one or more embodiments can increase the size and number of the second driving coils 3332 facing the second driving magnet 3331 by separately providing the second sensing magnet 3334 to sense the position of the rotation holder 3300, and since the second driving magnet 3331, which is disposed in multiple pieces, can be fully used to form a driving force, the driving force can be increased.

[0159] The second position sensor 3333 can be disposed at a position at which a change in the position of the second sensing magnet 3334 is detected.

[0160] The second position sensor 3333 can be disposed in the housing 1100 at a position spaced apart from the rotation shaft ball 3410 in the second optical axis direction (Z-axis direction).

[0161] In an embodiment, the second position sensor 3333 can be disposed to face the neutral region N1 of the second sensing magnet 3334. In another embodiment, the second position sensor 3333 can be spaced apart from the second sensing magnet 3334 in the second optical axis direction (Z-axis direction).

[0162] When power is supplied to the second driving coil 3332, the position of the rotation holder 3300 detected by the second position sensor 3333 can be different from the actual position of the rotation holder 3300 due to a magnetic field generated from the second driving coil 3332.

[0163] However, according to one or more embodiments, the second position sensor 3333 is spaced apart from the second driving coil 3332 such that it can be less affected by the magnetic field of the second driving coil 3332, and thus, the sensing accuracy of the second position sensor 3333 can be improved.

[0164] Figure 12 FIG. 17 is an exploded perspective view of a second lens module 4000 according to one or more embodiments, and Figure 13 FIG. 18 is an exploded perspective view of the second lens module 4000 according to one or more embodiments, viewed from below.

[0165] The second lens module 4000 can be disposed between the folding module 3000 and the image sensor 5000.

[0166] The second lens module 4000 can include a second lens barrel 4100.

[0167] A plurality of lenses L can be mounted within the second lens barrel 4100 along a second optical axis direction (Z-axis direction).

[0168] The second lens barrel 4100 can be coupled to a lens bearing portion 4200.

[0169] The lens bearing portion 4200 can be supported on the housing 1100 to be movable.

[0170] In an embodiment, the lens bearing portion 4200 can move in the second optical axis direction (Z-axis direction) with respect to the housing 1100. In this example, the second lens barrel 4100 can move in the second optical axis direction (Z-axis direction) together with the lens bearing portion 4200.

[0171] The second lens module 4000 can include a driving portion (hereinafter referred to as a third driving portion) that drives the lens bearing portion 4200.

[0172] The third driving portion can include a third driving magnet 4310 and a third driving coil 4320.

[0173] The third driving magnet 4310 can be disposed in the lens bearing portion 4200, and the third driving coil 4320 can be disposed in the housing 1100 through the main substrate 7000.

[0174] The third driving magnet 4310 and the third driving coil 4320 can be disposed to face each other in a direction (Y-axis direction) perpendicular to both the first optical axis (X-axis) and the second optical axis (Z-axis).

[0175] The third driving magnet 4310 can be disposed on one or both side surfaces of the lens bearing portion 4200.

[0176] The third driving coil 4320 can be disposed in the housing 1100 to face the third driving magnet 4310 while being disposed on the main substrate 7000. The housing 1100 can include a through-hole, and the third driving coil 4320 can be disposed in the through-hole to directly face the third driving magnet 4310.

[0177] The third driving magnet 4310 can be magnetized such that one surface facing the third driving coil 4320 can have both N and S poles. For example, the one surface of the third driving magnet 4310 can be provided with an N pole (or a first polarity region), a neutral region, and an S pole (or a second polarity region) in the second optical axis direction (Z-axis direction).

[0178] When power is supplied to the third driving coil 4320, the third driving coil 4320 and the third driving magnet 4310 can generate a driving force in a direction perpendicular to the direction in which they face each other, for example, can generate a driving force in the second optical axis direction (Z-axis direction), and the lens carrying part 4200 can move in the second optical axis direction (Z-axis direction) by the driving force.

[0179] Since the third driving magnet 4310 can be disposed in the lens carrying part 4200, it can become a moving member that moves together with the lens carrying part 4200, and the third driving coil 4320 can become a fixed member that does not move.

[0180] A third ball member supporting the movement of the lens carrying part 4200 can be disposed between the lens carrying part 4200 and the housing 1100.

[0181] The third ball member can include three or more guide balls 4600 (4610, 4620, and 4630). In an embodiment, the third ball member can include three guide balls 4610, 4620, and 4630.

[0182] The three guide balls 4610, 4620, and 4630 can be disposed on one side and the other side of the lens carrying part 4200, respectively. For example, among the three guide balls 4610, 4620, and 4630, two guide balls 4620 and 4630 can support one side (preferably, a portion closer to the third driving portion) of the lens carrying part 4200, and one guide ball 4610 can support the other side of the lens carrying part 4200. The one side and the other side of the lens carrying part 4200 can be disposed opposite each other with respect to the second optical axis (Z-axis).

[0183] The two guide balls 4620 and 4630 disposed on one side of the lens carrying part 4200 can be spaced apart in the second optical axis direction (Z-axis direction).

[0184] The lens carrying part 4200 and the housing 1100 can be respectively provided with a plurality of guide grooves that accommodate different portions of the three guide balls 4610, 4620, and 4630. In an embodiment, the lens carrying part 4200 can be provided with a third guide groove 4230, and the housing 1100 can be provided with a fourth guide groove 1130 facing the third guide groove 4230.

[0185] The third guide groove 4230 and the fourth guide groove 1130 can be straight lines having a length in the moving direction of the lens carrying part 4200, that is, in the second optical axis direction (Z-axis direction).

[0186] The plurality of guide balls 4610, 4620, and 4630 can support the movement of the lens carrying part 4200 by rolling in the third guide groove 4230 and the fourth guide groove 1130 in the moving direction of the lens carrying part 4200.

[0187] In an embodiment, the number of contact points of at least one of the two guide balls 4620 and 4630 supporting one side of the lens carrying part 4200 with the guide groove can be greater than the number of contact points of the remaining guide ball 4610 with the guide groove. In an example, at least one of the two guide balls 4620 and 4630 supporting one side of the lens carrying part 4200 can be in two-point contact with the third guide groove 4230 and / or the fourth guide groove 1130. In this example, the cross-section of the third guide groove 4230 and / or the fourth guide groove 1130 can be "v" shaped.

[0188] In order to prevent separation of the third ball member, an attractive force can be applied between the lens carrying part 4200 and the housing 1100. For this purpose, the fourth magnetic material 4510 and the fifth magnetic material 4520 can be disposed to face each other in the lens carrying part 4200 and the housing 1100, respectively.

[0189] In an embodiment, the fourth magnetic material 4510 disposed in the lens carrying part 4200 can be a traction magnet, and the fifth magnetic material 4520 disposed in the housing 1100 can be a traction yoke. However, in another embodiment, both the fourth magnetic material 4510 and the fifth magnetic material 4520 can be traction magnets.

[0190] The fourth magnetic material 4510 and the fifth magnetic material 4520 can face each other in the first optical axis direction (X-axis direction), and can generate an attractive force in the direction in which they face each other.

[0191] Due to the attractive force acting between the fourth magnetic material 4510 and the fifth magnetic material 4520, the lens carrying part 4200 can be supported in the housing 1100 in the first optical axis direction (X-axis direction). In addition, the third ball member can remain in contact with the lens carrying part 4200 and the housing 1100.

[0192] In an embodiment, it can be desirable to dispose the fourth magnetic material 4510 closer to one side of the lens carrying part 4200 than the other side of the lens carrying part 4200.

[0193] The second lens module 4000 can include a third position sensor 4330 detecting a position of the lens bearing portion 4200. In an example, the third position sensor 4330 can be a Hall sensor.

[0194] The third position sensor 4330 can be disposed in the housing 1100 through the main substrate 7000. In an example, the third position sensor 4330 can be disposed inside or outside the third driving coil 4320.

[0195] The third position sensor 4330 can be disposed to face the neutral region of the third driving magnet 4310.

[0196] One or more embodiments can increase a driving force and reduce magnetic interference.

[0197] While the disclosure includes certain examples, it is to be understood that various changes in form and details can be made to these examples without departing from the spirit and scope of the claims and their equivalents. The examples described herein are to be considered in a descriptive sense only and not for purposes of limitation. Descriptions of features or aspects within each example should be considered to apply to other examples as well. Suitable 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 in a different manner, and / or replaced or supplemented by other components or their equivalents.

[0198] Therefore, the scope of the disclosure is not limited to the above and all the disclosure of the drawings, but includes the claims and their equivalents, i.e., all variations within the scope of the claims and their equivalents should be interpreted as included in the disclosure.

Claims

1. An optical module, comprising: a housing having an open upper portion; a rotating bracket disposed in the housing and configured to rotate about a first rotation axis; a reflective bracket on which an optical member is mounted, the reflective bracket being supported by the rotating bracket and configured to rotate about a second rotation axis perpendicular to the first rotation axis; a rotating shaft ball, disposed between the housing and the rotating bracket and forming the first rotating shaft; a first sensing magnet provided on the rotating bracket at a position spaced apart from the rotating shaft sphere in a direction perpendicular to both the first rotating shaft and the second rotating shaft; and A first position sensor is provided on the housing at a position spaced apart from the rotation axis ball in a direction perpendicular to both the first rotation axis and the second rotation axis.

2. The optical module according to claim 1, further comprising: A first driving magnet is provided on the rotating bracket; as well as a first driving coil disposed in the housing so as to face the first driving magnet; The first driving magnet is magnetized so that a surface of the first driving magnet facing the first driving coil includes a first polarity region having a first polarity and a second polarity region having a second polarity different from the first polarity.

3. The optical module according to claim 2, wherein: The first sensing magnet is magnetized such that a surface of the first sensing magnet facing the housing includes a first polarity region having a first polarity and a second polarity region having a second polarity different from the first polarity.

4. The optical module according to claim 3, wherein: The first driving magnet includes two magnets, and wherein one of the two magnets of the first driving magnet is arranged so that the first polarity region of the one magnet is adjacent to the first sensing magnet, and the other of the two magnets of the first driving magnet is arranged so that the second polarity region of the other magnet is adjacent to the first sensing magnet.

5. The optical module according to claim 4, wherein: The first sensing magnet is arranged so that the first polarity region of the first sensing magnet is adjacent to the magnet of the two magnets whose first polarity region is adjacent to the first sensing magnet, and the second polarity region of the first sensing magnet is adjacent to the magnet of the two magnets whose second polarity region is adjacent to the first sensing magnet. The optical module according to claim 1 , wherein: The first position sensor is disposed to face the first sensing magnet.

7. The optical module according to claim 6, wherein: The first sensing magnet is magnetized so that a surface of the first sensing magnet facing the first position sensor includes a first polarity region and a second polarity region, wherein the neutral region is provided between the first polarity region and the second polarity region, and Wherein, the first position sensor is arranged to face the neutral area.

8. The optical module according to claim 1, wherein The first position sensor is spaced apart from the first sensing magnet in a direction perpendicular to both the first rotation axis and the second rotation axis.

9. An optical module, comprising: a housing having an open upper portion; a rotating bracket disposed in the housing and configured to rotate about a first rotation axis; a reflective support on which an optical member is mounted, the reflective support being supported on the rotating support and configured to rotate about a second rotation axis perpendicular to the first rotation axis; a plurality of first driving magnets, disposed on the rotating bracket; as well as The first sensing magnet is provided between the plurality of first driving magnets with a gap therebetween in the second rotation axis direction.

10. The optical module according to claim 9, wherein: The plurality of first driving magnets and the first sensing magnet are magnetized so that the surface of the plurality of first driving magnets facing the shell and the surface of the first sensing magnet facing the shell include a first polarity region having a first polarity and a second polarity region having a second polarity different from the first polarity.

11. The optical module according to claim 10, wherein: The plurality of first driving magnets and the first sensing magnets are arranged such that regions of the first driving magnets and the first sensing magnets having the same polarity are adjacent to each other. 12 . The optical module according to claim 10 , further comprising a plurality of first driving coils provided in the housing to face each of the plurality of first driving magnets. 13 . The optical module according to claim 10 , further comprising a first position sensor provided in the housing to face the first sensing magnet. 14 . The optical module according to claim 10 , further comprising a first position sensor provided in the housing to be spaced apart from the first sensing magnet in a direction perpendicular to both the first rotation axis and the second rotation axis.

15. The optical module according to claim 10, wherein The plurality of first driving magnets are arranged obliquely to each other so that a distance between first ends of the plurality of first driving magnets adjacent to the first sensing magnet is closer than a distance between second ends of the plurality of first driving magnets disposed away from the first sensing magnet.

16. A camera module comprising: An optical module according to any one of claims 1 to 8 or any one of claims 9 to 15; as well as The lens module includes one or more lenses arranged in the optical axis direction and is configured to move in the optical axis direction.

17. An optical module, comprising: a housing having an open upper portion; a rotating bracket disposed in the housing and configured to rotate about a first rotation axis; a reflective bracket on which an optical member is mounted, the reflective bracket being supported by the rotating bracket and configured to rotate about a second rotation axis perpendicular to the first rotation axis; a rotating shaft ball, disposed between the housing and the rotating bracket, and forming the first rotating shaft; a first sensing magnet provided on the rotating bracket at a position spaced apart from the rotating shaft ball in a direction perpendicular to both the first rotating shaft and the second rotating shaft; as well as A driving magnet including a first driving magnet and a second driving magnet, The first driving magnet, the first sensing magnet and the second driving magnet are sequentially arranged along an axis perpendicular to the first rotation axis.

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