CN212658926U - Camera module - Google Patents

Abstract

The present application relates to a camera module, which includes: a housing accommodating the lens module and the carrier; a focusing unit including a first magnet disposed in the bearing portion and a first coil disposed on a first substrate on the housing; and a shake correction unit including second and third magnets provided in the lens module and second and third coils provided on the second substrate on the bearing part. The first magnet and the first coil face each other in a first direction. The second magnet and the second coil face each other in the first direction, and the third magnet and the third coil face each other in the second direction. The second magnet and the second coil and the third magnet and the third coil are moved together in the optical axis direction by the driving force generated by the first magnet and the first coil. The camera module according to the example of the present application may improve the shake correction performance and the focusing performance.

Description

Camera module

Cross Reference to Related Applications

This application claims priority rights to korean patent application No. 10-2019-0100296, filed on 16.8.2019 and korean patent application No. 10-2019-01696, filed on 17.12.12.2019, and incorporated by reference in its entirety for all purposes.

Technical Field

The following description relates to a camera module.

Background

Camera modules have been used in mobile communication terminals such as tablet Personal Computers (PCs), laptop computers, and the like, and in smart phones.

The camera module is provided with an actuator that moves the lens module to perform a focusing function and a shake correction function. The actuator moves the lens module in the optical axis direction and a direction perpendicular to the optical axis using the driving force generated by the magnet and the coil.

However, since the lens module moves in the optical axis direction during the focusing operation, the relative positions of the magnet and the coil for shake correction (the positions of the magnet and the coil in the optical axis direction) may also vary.

When the relative positions of the magnet and the coil for shake correction (the positions of the magnet and the coil in the optical axis direction) vary, it may be difficult to accurately control the driving force (the driving force in the direction perpendicular to the optical axis) generated by the magnet and the coil for shake correction.

SUMMERY OF THE UTILITY MODEL

The summary of the invention 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.

A camera module capable of improving shake correction performance and focusing performance.

In one general aspect, a camera module includes: a carrier in which the lens module is accommodated; a housing in which the lens module and the carrier are accommodated; a focusing unit including a first magnet disposed in the bearing portion and a first coil disposed on a first substrate disposed on the housing; and a shake correction unit including second and third magnets provided in the lens module and second and third coils provided on a second substrate provided on the bearing portion. The first magnet and the first coil are disposed to face each other in a first direction perpendicular to the optical axis. The second magnet and the second coil are disposed to face each other in a first direction perpendicular to the optical axis, and the third magnet and the third coil are disposed to face each other in a second direction perpendicular to the optical axis. The second magnet and the second coil and the third magnet and the third coil are moved together in the optical axis direction by the driving force generated by the first magnet and the first coil.

The second substrate may include an extension portion movable in the optical axis direction by a driving force generated by the first magnet and the first coil.

At least a portion of the extension may be curved.

The second substrate may include a body portion, the second coil and the third coil being disposed on the body portion, and the extension portion extending from the body portion.

The body portion may be disposed on a side surface of the carrier, and the extension portion may be disposed between the carrier and the housing.

The carrier may define a through hole through which light passes, and at least a portion of the extension may be bent along a circumference of the through hole.

The extension portion may have a first end connected to the body portion and a second end connected to the housing, and the second end of the extension portion may include a connection portion that receives an electrical signal.

The connection portion may be exposed to the outside of the housing through an opening provided in a side surface of the housing.

The first substrate may be disposed on a side surface of the case.

Both the second coil and the third coil may be disposed closer to the optical axis than the first coil.

The shake correction unit may include a frame that guides movement of the lens module, and the frame and the lens module may be moved together in the first direction by a driving force generated by the second magnet and the second coil.

The reinforcing plate may be disposed inside the frame, and a portion of the reinforcing plate may be exposed outside the frame.

The lens module may be moved in the second direction by the driving force generated by the third magnet and the third coil.

In another general aspect, a camera module includes: a carrier in which the lens module is accommodated; a housing in which the lens module and the carrier are accommodated; a focusing unit including a first magnet disposed on the bearing portion and a first coil disposed to face the first magnet in a first direction perpendicular to the optical axis; a shake correction unit including a second magnet and a second coil disposed to face each other in a first direction perpendicular to the optical axis, and a third magnet and a third coil disposed to face each other in a second direction perpendicular to the optical axis, wherein the second magnet and the third magnet are disposed on the lens module; and a substrate disposed on the carrying part, the second coil and the third coil being disposed on the substrate. The lens module, the carrier, the second and third magnets, the second and third coils, and the substrate are moved together in the optical axis direction by the driving force generated by the first magnet and the first coil. A portion of the substrate is disposed on the housing.

The substrate may include a first body portion at which the second coil is disposed, a second body portion at which the third coil is disposed, and an extension portion extending from one of the first and second body portions and disposed between the carrier and the case.

The extension portion may include a connection portion that receives an electrical signal, and the connection portion may be fixed to the housing.

The first direction may be perpendicular to the second direction.

The first body portion may be elongated in a first direction, the second body portion may be elongated in a second direction, and the extension portion is elongated in the first direction or the second direction and curved around the optical axis direction.

Other features and aspects will become apparent from the following detailed description, the accompanying drawings, and the appended claims.

Drawings

Fig. 1 is a perspective view of a camera module according to an example.

Fig. 2 is a schematic exploded perspective view of a camera module according to an example.

Fig. 3 is a perspective view of the frame.

Fig. 4 is a bottom perspective view of the frame.

Fig. 5 is a perspective view of the second substrate.

Fig. 6 is a side view of the second substrate.

Fig. 7 and 8 show the movement of the second substrate in the optical axis direction.

Fig. 9 is a bottom perspective view in a state where the second substrate is mounted on the carrier.

Fig. 10 is a side view in a state where a housing is removed from a camera module according to an example.

Like reference numerals refer to like elements throughout the drawings and detailed description. The figures may not be drawn to scale and the relative sizes, proportions and depictions of the elements in the figures may be exaggerated for clarity, illustration and convenience.

Detailed Description

The following detailed description is provided to assist the reader in obtaining a thorough understanding of the methods, apparatuses, and/or systems described herein. Various changes, modifications, and equivalents of the methods, devices, and/or systems described herein will, however, be apparent to those of ordinary skill in the art. The order of operations described in this application is merely an example and is not limited to the order set forth in this application except for operations that must occur in a particular order, but may be varied as would be apparent to one of ordinary skill in the art. In addition, descriptions of functions and configurations that will be well known to those of ordinary skill in the art may be omitted for clarity and conciseness.

The features described in this application may be embodied in different forms and should not be construed as limited to the examples described in this application. Rather, the examples described herein are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It should be noted that in this application, the use of the word "may" with respect to an example or embodiment, such as with respect to what the example or embodiment may comprise or implement, means that there is at least one example or embodiment in which such features are comprised or implemented, and that all examples and embodiments are not limited thereto.

Throughout the specification, when an element such as a layer, region or substrate is described as being "on," "connected to" or "coupled to" another element, it can be directly on, "connected to" or "coupled to" the other element or one or more other elements may be present between the element and the other element. In contrast, when an element is referred to as being "directly on," "directly connected to" or "directly coupled to" another element, there may be no other elements intervening between the element and the other element.

As used in this application, the term "and/or" includes any one of the associated listed items as well as any combination of any two or more items.

Although terms such as "first", "second", and "third" may 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. Rather, these terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first member, first component, first region, first layer, or first portion referred to in these examples may also be referred to as a second member, second component, second region, second layer, or second portion without departing from the teachings of the examples described in this application.

Spatially relative terms such as "above … …", "above", "below … …" and "below" may be used herein for descriptive convenience to describe one element's relationship to another element as illustrated in the figures. These spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "upper" relative to other elements would then be oriented "below" or "lower" relative to the other elements. Thus, the term "above … …" encompasses both orientations of "above and" below. The device may also be otherwise oriented (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used in this application should be interpreted accordingly.

The terminology used in the present application is for the purpose of describing various examples only and is not intended to be limiting of the disclosure. The articles "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," and "having" specify the presence of stated features, integers, operations, elements, and/or groups thereof, but do not preclude the presence or addition of one or more other features, integers, operations, elements, components, and/or groups thereof.

Variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, may be expected. Accordingly, examples described in this application are not limited to the specific shapes shown in the drawings, but include shape changes that occur during manufacturing.

The features of the examples described in this application may be combined in various ways that will be apparent after understanding the disclosure of this application. Further, while the examples described in this application have a variety of configurations, other configurations are possible as will be apparent after understanding the disclosure of this application.

Hereinafter, examples will be described with reference to the drawings.

Examples relate to a camera module that may be used in a portable electronic device such as a mobile communication terminal, a smart phone, or a tablet Personal Computer (PC).

Fig. 1 is a perspective view of a camera module according to an example, and fig. 2 is a schematic exploded perspective view of the camera module according to the example.

Fig. 3 is a perspective view of the frame, and fig. 4 is a bottom perspective view of the frame.

Referring to fig. 1 and 2, the camera module 1 may include a lens module 200, a lens driving device for moving the lens module 200, an image sensor module 600 for converting light incident to the image sensor module 600 through the lens module 200 into an electrical signal, a housing 110 accommodating the lens module 200 and the lens driving device therein, and a housing 130 coupled to the housing 110.

The lens module 200 may include a lens barrel 210 and a lens holder 230.

The lens barrel 210 may accommodate at least one lens configured to photograph a subject. When a plurality of lenses are arranged in the lens barrel 210, the plurality of lenses are mounted inside the lens barrel 210 along the optical axis. The lens barrel 210 has a hollow cylindrical shape, and is coupled to the lens holder 230.

The lens driving apparatus moves the lens module 200.

As an example, the lens driving apparatus moves the lens module 200 in the optical axis (Z axis) direction to bring the lens into focus, and moves the lens module 200 in a direction perpendicular to the optical axis (Z axis) to correct a shake when capturing an image.

The lens driving apparatus may include a focusing unit 400 for focusing a lens and a shake correction unit 500 for correcting shake.

The image sensor module 600 is a device for converting light incident through the lens module 200 into an electrical signal.

As an example, the image sensor module 600 may include an image sensor 610 and a Printed Circuit Board (PCB)630 connected to the image sensor 610, and may further include an infrared filter.

The infrared filter cuts light in an infrared region among light incident to the infrared filter through the lens module 200.

The image sensor 610 converts light incident to the image sensor 610 through the lens module 200 into an electrical signal. As an example, the image sensor 610 may be a Charge Coupled Device (CCD) or a complementary metal oxide semiconductor device (CMOS).

The electrical signal converted by the image sensor 610 is output as an image through a display unit of the portable electronic device.

The image sensor 610 is fixed to the printed circuit board 630 and is electrically connected to the printed circuit board 630 by wire bonding.

The lens module 200 is accommodated in the housing 110. As an example, the housing 110 has an open top and an open bottom, and the lens module 200 is accommodated in the inner space of the housing 110.

The image sensor module 600 is disposed on the bottom of the case 110.

The outer case 130 is coupled to the case 110 to cover an outer surface of the case 110, and serves to protect internal components of the camera module 1.

Hereinafter, the focusing unit 400 of the lens driving apparatus will be described with reference to fig. 2.

The lens driving apparatus moves the lens module 200 to bring the lens into focus on the subject.

As an example, the camera module 1 includes a focusing unit 400, and the focusing unit 400 is used to move the lens module 200 in the optical axis direction (Z-axis direction).

The focusing unit 400 includes a carrier 300 in which the lens module 200 is accommodated, and a first magnet 410 and a first coil 430 for generating a driving force to move the lens module 200 and the carrier 300 in an optical axis direction (Z-axis direction).

The first magnet 410 is mounted on the carrier 300. As an example, the first magnet 410 may be mounted on a side surface of the carrier 300.

The first coil 430 is disposed on the first substrate 470. As an example, the first coil 430 is disposed on a surface of the first substrate 470. The first substrate 470 is mounted on a side surface of the case 110 such that the first magnet 410 and the first coil 430 face each other in a direction perpendicular to the optical axis (Z-axis).

The housing 110 has four side surfaces. Of the four side surfaces, one side surface is provided with an opening 111. The first substrate 470 is mounted on a side surface of the case 110 where the opening 111 is provided. The connection part 471 is disposed on a lower portion of the first substrate 470, and the first substrate 470 is connected to the printed circuit board 630.

The first magnet 410 is a movable member that is mounted on the carrier part 300 and moves in the optical axis direction (Z-axis direction) together with the carrier part 300, and the first coil 430 is a fixed member that is fixed to the housing 110.

When power is applied to the first coil 430, the carrier 300 moves in the optical axis direction (Z-axis direction) by electromagnetic interaction between the first magnet 410 and the first coil 430.

Since the lens module 200 is accommodated in the carrier 300, the lens module 200 is also moved in the optical axis direction (Z-axis direction) by the movement of the carrier 300. As will be described below with reference to fig. 2, since the frame 310 and the lens module 200 are sequentially accommodated in the carrier 300, the frame 310 and the lens module 200 are also moved in the optical axis direction (Z-axis direction) by the movement of the carrier 300.

Since the first magnet 410 is mounted on the carrier part 300, the first magnet 410 also moves in the optical axis (Z-axis) direction together with the carrier part 300.

As will be described below, since the second and third magnets 510a and 530a are mounted on the lens module 200, the second and third magnets 510a and 530a also move in the optical axis direction (Z-axis direction) together with the lens module 200.

The second and third coils 510b and 530b disposed facing the second and third magnets 510a and 530a are also moved in the optical axis direction (Z-axis direction) by the driving force generated by the first magnet 410 and the first coil 430.

The rolling members B1 are provided between the carrier 300 and the housing 110 to reduce friction between the carrier 300 and the housing 110 when the carrier 300 moves. The rolling member B1 may have a spherical shape.

The rolling members B1 are provided on opposite sides of the first magnet 410.

The yoke 440 is disposed to face the first magnet 410 in a direction perpendicular to the optical axis (Z-axis). As an example, the yoke 440 is mounted on the other surface of the first substrate 470 opposite to the first coil 430. Accordingly, the yoke 440 is disposed to face the first magnet 410 with the first coil 430 interposed between the yoke 440 and the first magnet 410.

An attractive force acts between the yoke 440 and the first magnet 410 in a direction perpendicular to the optical axis (Z-axis).

Therefore, the rolling member B1 maintains a state of contact with the carrier part 300 and the housing 110 by the attractive force between the yoke 440 and the first magnet 410.

The yoke 440 serves to gather the magnetic force of the first magnet 410. Therefore, generation of leakage magnetic flux can be prevented.

As an example, the yoke 440 and the first magnet 410 form a magnetic circuit.

In various examples, a closed loop control approach is used that detects and feeds back the position of the lens module 200.

Therefore, the position sensor 450 is provided to perform closed-loop control. The position sensor 450 is disposed in a hollow portion formed in the center of the first coil 430 to face the first magnet 410. The position sensor 450 may be a hall sensor.

Hereinafter, a shake correction unit 500 of the lens driving apparatus according to an example will be described with reference to fig. 2.

When an image or a moving image is photographed, the shake correction unit 500 is used to correct image blur or moving image shake due to hand shake of a user or the like.

For example, when a shake occurs at the time of photographing an image due to hand shake of a user or the like, the shake correction unit 500 compensates for the shake by shifting the lens module 200 by a relative displacement corresponding to the shake.

As an example, the shake correction unit 500 moves the lens module 200 in a direction perpendicular to the optical axis (Z axis) to correct shake.

The shake correction unit 500 includes a frame 310 guiding the movement of the lens module 200, and second and third magnets 510a and 510b and third coils 530a and 530b generating a driving force in a direction perpendicular to the optical axis (Z-axis).

The frame 310 and the lens holder 230 are sequentially arranged in the carrying section 300 in the optical axis direction (Z-axis direction), and serve to guide the movement of the lens barrel 210.

The frame 310 and the lens holder 230 are provided with a space into which the lens barrel 210 is inserted. The lens barrel 210 is inserted into the lens holder 230 to be fixed.

Since the frame 310 is disposed between the carrier 300 and the lens holder 230, the thickness of the frame 310 needs to be reduced to reduce the height of the camera module 1 in the optical axis direction. However, when the thickness of the frame 310 is reduced, the rigidity of the frame 310 may be reduced, thereby deteriorating reliability to external impact and the like.

Therefore, as shown in fig. 3 and 4, the frame 310 of the camera module 1 may be provided with a reinforcement plate 330 to reinforce the rigidity of the frame 310.

As an example, the reinforcing plate 330 is integrated with the frame 310 by insert molding. In this case, the reinforcing plate 330 may be manufactured to be integrated with the frame 310 by injecting a resin material into a mold in a state where the reinforcing plate 330 is fixed in the mold.

The reinforcing plate 330 is disposed inside the frame 310, and a portion of the reinforcing plate 330 is exposed outside the frame 310.

As an example, a portion 331 of the upper surface of the reinforcing plate 330 is exposed from the upper surface of the frame 310, and a portion 333 of the lower surface of the reinforcing plate 330 is exposed from the lower surface of the frame 310. The side surface of the reinforcing plate 330 is provided with a protrusion 335 exposed from the side surface of the frame 310.

As described above, a portion of the reinforcing plate 330 is exposed to various portions of the frame 310 while the reinforcing plate 330 is integrated with the inside of the frame 310. Accordingly, the coupling force of the reinforcing plate 330 and the frame 310 is improved, and the reinforcing plate 330 is prevented from being separated from the frame 310.

The second and third magnets 510a and 530a are disposed in positions close to the frame 310. Accordingly, the reinforcing plate 330 may be formed of a non-magnetic metal to prevent the movement of the second and third magnets 510a and 530a from being disturbed during the shake correction.

The frame 310 and the lens holder 230 are moved in a direction perpendicular to the optical axis (Z-axis) with respect to the carrying part 300 by the driving force generated by the second and third magnets 510a and 530a and the second and third coils 510b and 530 b.

The second magnetic body 510a and the second coil 510b generate a driving force in a first axis direction (X-axis direction) perpendicular to the optical axis (Z-axis), and the third magnetic body 530a and the third coil 530b generate a driving force in a second axis direction (Y-axis direction) perpendicular to the first axis (X-axis). For example, the second magnetic body 510a and the second coil 510b generate a driving force in a direction in which the second magnetic body 510a and the second coil 510b face each other, and the third magnetic body 530a and the third coil 530b also generate a driving force in a direction in which the third magnetic body 530a and the third coil 530b face each other.

The second axis (Y-axis) is perpendicular to both the optical axis (Z-axis) and the first axis (X-axis).

The second and third magnetic bodies 510a and 530a are disposed to be orthogonal to each other in a plane perpendicular to the optical axis (Z-axis), and the second and third coils 510b and 530b are also disposed to be orthogonal to each other in a plane perpendicular to the optical axis (Z-axis).

The second and third magnets 510a and 530a are mounted on the lens holder 230.

The side surface of the lens holder 230 includes a first surface and a second surface perpendicular to each other. The second magnet 510a is disposed on the first surface of the lens holder 230, and the third magnet 530a is disposed on the second surface of the lens holder 230.

The second and third coils 510b and 530b may be disposed on the second substrate 550. As an example, the second and third coils 510b and 530b may be disposed on the surface of the second substrate 550 to face the second and third magnetic bodies 510a and 530 a. Meanwhile, the mounting positions of the second magnet 510a and the second coil 510b may be interchangeable. In addition, the mounting positions of the third magnetic body 530a and the third coil 530b may be interchangeable.

The second substrate 550 is mounted on the housing 110.

As an example, the second substrate 550 may be mounted on both side surfaces of the carrier 300.

The carrier 300 has four side surfaces, and of the four side surfaces, at least two side surfaces are provided with openings 302 and 303. The second substrate 550 is mounted on both side surfaces of the carrier 300 provided with the openings 302 and 303.

Since the first coil 430 is disposed on the first substrate 470 mounted on the side surface of the housing 110 and the second and third coils 510b and 530b are disposed on the second substrate 550 mounted on the side surface of the carrier 300, the second and third coils 510b and 530b may be disposed closer to the optical axis of the lens module 200 than the first coil 430.

During shake correction, the second and third magnets 510a and 530a are movable members that move together with the lens holder 230 in a direction perpendicular to the optical axis (Z-axis), and the second and third coils 510b and 530b are fixed members that are fixed to the carrier 300.

Since the carrying part 300 can move in the optical axis (Z-axis) direction, the second substrate 550 and the second and third coils 510b and 530b can also move in the optical axis direction (Z-axis) together with the carrying part 300. For example, during focusing, the second substrate 550 and the second and third coils 510b and 530b move in the optical axis direction (Z-axis direction) together with the carrier part 300.

The camera module 1 is provided with a plurality of spherical members for supporting the frame 310 and the lens holder 230. The plurality of spherical members serve to guide the movement of the frame 310, the lens holder 230, and the lens barrel 210 during the shake correction process. The plurality of ball members also serve to maintain the spacing between the carrier 300 and the frame 310 and the lens holder 230.

The plurality of ball members includes a first ball member B2 and a second ball member B3.

The first spherical member B2 guides the movement of the frame 310, the lens holder 230, and the lens barrel 210 in the first axial direction (X-axis direction), and the second spherical member B3 guides the movement of the lens holder 230 and the lens barrel 210 in the second axial direction (Y-axis direction).

As an example, when the driving force is generated in the first axis direction (X axis direction), the first spherical member B2 moves in a rolling motion in the first axis direction (X axis direction). Accordingly, the first spherical member B2 guides the movement of the frame 300, the lens holder 230, and the lens barrel 210 in the first axial direction (X-axis direction).

When the driving force is generated in the second shaft direction (Y-axis direction), the second spherical member B3 moves in a rolling motion in the second shaft direction (Y-axis direction). Therefore, the second spherical member B3 guides the movement of the lens holder 230 and the lens barrel 210 in the second axis direction (Y axis direction).

The first spherical member B2 includes a plurality of spherical members provided between the carrier 300 and the frame 310, and the second spherical member B3 includes a plurality of spherical members provided between the frame 310 and the lens holder 230.

The first guide groove portion 301 is formed in at least one of the surfaces of the carrier portion 300 and the frame 310 facing each other in the optical axis direction (Z-axis direction), and the first spherical member B2 is accommodated in the first guide groove portion 301. The first guide groove portion 301 includes a plurality of guide grooves corresponding to the plurality of ball members of the first ball member B2, respectively.

The first ball member B2 is received in the first guide groove portion 301, and is fitted between the bearing 300 and the frame 310.

In a state where the first ball member B2 is accommodated in the first guide groove portion 301, the movement of the first ball member B2 is restricted in the optical axis direction (Z-axis direction) and the second axis direction (Y-axis direction), and the first ball member B2 can move only in the first axis direction (X-axis direction). As an example, the first ball member B2 may move in a rolling motion only in the first axis direction (X axis direction).

For this reason, the planar shape of each of the plurality of guide grooves of the first guide groove portion 301 is a rectangular shape having a length in the first axis direction (X-axis direction).

A second guide groove portion 311 is formed in at least one of surfaces of the frame 310 and the lens holder 230 facing each other in the optical axis direction (Z-axis direction), and the second ball member B3 is received in the second guide groove portion 311. The second guide groove portion 311 includes a plurality of guide grooves corresponding to the plurality of ball members of the second ball member B3, respectively.

The second ball member B3 is received in the second guide groove portion 311, and is fitted between the frame 310 and the lens holder 230.

In a state where the second ball member B3 is accommodated in the second guide groove portion 311, the movement of the second ball member B3 is restricted in the optical axis direction (Z-axis direction) and the first axis direction (X-axis direction), and the second ball member B3 can move only in the second axis direction (Y-axis direction). As an example, the second spherical member B3 may move in a rolling motion only in the second axial direction (Y-axis direction).

For this reason, the planar shape of each of the plurality of guide grooves of the second guide groove portion 311 is a rectangular shape having a length in the second axis direction (Y-axis direction).

When the driving force is generated in the first axis direction (X-axis direction), the frame 310, the lens holder 230, and the lens barrel 210 move together in the first axis direction (X-axis direction).

The first spherical member B2 moves in a rolling motion in the first axis direction (X axis direction). In this case, the movement of the second ball member B3 is restricted.

When the driving force is generated in the second axis direction (Y axis direction), the lens holder 230 and the lens barrel 210 move in the second axis direction (Y axis direction).

The second spherical member B3 moves in a rolling motion in the second axial direction (Y-axis direction). In this case, the movement of the first spherical member B2 is restricted.

In various examples, a closed-loop control manner of detecting and feeding back the position of the lens barrel 210 is used in the shake correction process.

Accordingly, position sensors 510c and 530c are provided to perform closed-loop control. Two position sensors 510c and 530c are provided, and the two position sensors 510c and 530c are respectively provided in hollow portions formed at the centers of the second and third coils 510b and 530b to face the second and third magnets 510a and 530 a. The position sensors 510c and 530c may be hall sensors.

The first yoke 710 and the second yoke 730 are provided to keep the shake correction unit 500 and the first spherical member B2 and the second spherical member B3 in contact with each other.

The first yoke 710 and the second yoke 730 are fixed to the carrier part 300 and are disposed to face the second magnet 510a and the third magnet 530a, respectively, in the optical axis direction (Z-axis direction).

Therefore, attractive forces are generated in the optical axis direction (Z-axis direction) between the first yoke 710 and the second magnet 510a and between the second yoke 730 and the third magnet 530 a.

Since the lens holder 230 and the frame 310 are pressed toward the first yoke 710 and the second yoke 730 by the attractive forces between the first yoke 710 and the second magnet 510a and between the second yoke 730 and the third magnet 530a, the frame 310 and the lens holder 230 maintain a state of being in contact with the first ball member B2 and the second ball member B3.

The first and second yokes 710 and 730 are formed of a material that generates attractive force between the first yoke 710 and the second magnet 510a and between the second yoke 730 and the third magnet 530 a. As an example, the first and second yokes 710 and 730 may be formed of a magnetic material.

The stopper 320 is coupled to the carrier 300 to cover at least a portion of the upper portion of the lens holder 230.

The stopper 320 prevents the frame 310 and the lens holder 230 from being separated outward from the carrier 300.

Fig. 5 is a perspective view of the second substrate, fig. 6 is a side view of the second substrate, and fig. 7 and 8 show the movement of the second substrate in the optical axis direction.

Fig. 9 is a bottom perspective view in a state where the second substrate is mounted on the carrier, and fig. 10 is a side view in a state where the housing is removed from the camera module according to an example.

Referring to fig. 5, the second substrate 550 may be a flexible circuit board, and includes a body portion, an extension portion 553, and a connection portion 554. The body portion may include a first body portion 551 and a second body portion 552.

The surface of the first body portion 551 is provided with the second coil 510b, and the surface of the second body portion 552 is provided with the third coil 530 b. The first and second body portions 551 and 552 are mounted on the side surfaces of the carrier 300, on which the openings 302 and 303 are provided, in the side surfaces of the carrier 300.

The first body portion 551 and the second body portion 552 may be connected to each other to have

A plane is formed. For example, the first body portion 551 and the second body portion 552 may have, when viewed in the optical axis direction

And (4) shape.

An extension portion 553 extends from one of the first body portion 551 and the second body portion 552. As an example, the extension portion 553 may extend from the first body portion 551.

The extension portion 553 is disposed between the case 110 and the carrier 300. At least one surface on which the housing 110 and the bearing part 300 face each other in the optical axis direction (Z-axis direction) is provided with a groove portion into which the extension portion 553 is inserted.

One side of the extension portion 553 extends from one of the first and second body portions 551 and 552, and the other side of the extension portion 553 is mounted on the case 110.

A connection portion 554 is provided on an end of the extension portion 553. As an example, one side end of the extension portion 553 may be connected to the first body portion 551, and the other side end of the extension portion 553 may be connected to the connection portion 554. A connection portion 554 provided on the other side end of the extension portion 553 may be mounted on the case 110.

The connection portion 554 is configured to receive electrical signals from an external entity (e.g., the printed circuit board 630).

The connection portion 554 is introduced to the outside of the case 110 through the opening 111 provided in the side surface of the case 110, and the second substrate 550 is connected to the printed circuit board 630 through the connection portion 554.

For example, the connection portion 471 of the first substrate 470 and the connection portion 554 of the second substrate 550 are disposed on the side surface of the case 110 having the opening 111.

When the lens is in focus, the second substrate 550 may move in the optical axis direction (Z-axis direction) together with the carrier 300.

For example, as shown in fig. 7 and 8, when the carrier part 300 is moved in the optical axis direction (Z-axis direction) by the driving force of the first magnet 410 and the first coil 430, the second substrate 550 may be moved in the optical axis direction (Z-axis direction) in a state where the connection portion 554 is connected to the printed circuit board 630.

When the carrier 300 moves in the optical axis direction (Z-axis direction), the extension portion 553 may move in the optical axis direction (Z-axis direction) with respect to the first body portion 551 to significantly reduce the influence of the tension applied to the second substrate 550.

At least a portion of the extension portion 553 may be bent to significantly reduce the influence of tension generated when the second substrate 550 moves in the optical axis direction (Z-axis direction).

For example, at least a part of the extension portion 553 may have a curved or folded shape in a direction perpendicular to the optical axis (Z-axis) and/or in the optical axis direction (Z-axis direction).

The carrier 300 has a through hole 304 (see fig. 2), and light incident on the lens module 200 passes through the through hole 304 such that the image sensor 610 receives the light. The extension portion 553 has a shape curved along the circumference of the through-hole 304.

The camera module 1 according to the example is configured such that even when the lens module 200 moves in the optical axis direction (Z-axis direction) during the focusing operation, the relative positions of the second magnet 510a and the second coil 510b (the positions of the second magnet 510a and the second coil 510b in the optical axis direction (Z-axis direction)) and the relative positions of the third magnet 530a and the third coil 530b (the positions of the third magnet 530a and the third coil 530b in the direction of the optical axis (Z-axis direction)) do not change. Therefore, the driving force for shake correction can be accurately controlled.

Further, during the shake correction operation, even when the lens module 200 is moved in the direction perpendicular to the optical axis (Z-axis), the relative positions of the first magnet 410 and the first coil 430 (the positions of the first magnet 410 and the first coil 430 in the direction perpendicular to the optical axis (Z-axis)) are not changed. Therefore, the driving force for shake correction can be accurately controlled.

As described above, the camera module according to the example can improve the shake correction performance and the focusing performance.

While the present disclosure includes specific examples, it will be apparent upon an understanding of the present disclosure that various changes in form and detail may be made to these examples without departing from the spirit and scope of the claims and their equivalents. The examples described in this application are to be considered in a descriptive sense only and not for purposes of limitation. The description of features or aspects in each example should be considered applicable to similar features or aspects in other examples. Suitable results may still 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. Therefore, the scope of the present disclosure is defined not by the specific embodiments but by the claims and their equivalents, and all modifications within the scope of the claims and their equivalents should be understood as being included in the present disclosure.

Claims (18)

1. A camera module, characterized in that the camera module comprises:

a carrier configured to accommodate a lens module therein;

a housing configured to accommodate the lens module and the carrier in the housing;

a focusing unit including a first magnet disposed in the bearing portion and a first coil disposed on a first substrate disposed on the housing; and

a shake correction unit including second and third magnetic bodies provided in the lens module, and second and third coils provided on a second substrate provided on the carrier part,

wherein the first magnet and the first coil are disposed to face each other in a first direction perpendicular to an optical axis,

the second magnet and the second coil are disposed to face each other in the first direction perpendicular to the optical axis, and the third magnet and the third coil are disposed to face each other in the second direction perpendicular to the optical axis, an

The second magnet and the second coil and the third magnet and the third coil move together in the optical axis direction by the driving force generated by the first magnet and the first coil.

2. The camera module according to claim 1, wherein the second substrate includes an extended portion configured to be movable in the optical axis direction by a driving force generated by the first magnet and the first coil.

3. The camera module of claim 2, wherein at least a portion of the extension portion is curved.

4. The camera module according to claim 2, wherein the second substrate includes a main body portion, the second coil and the third coil are disposed on the main body portion, and the extension portion extends from the main body portion.

5. The camera module according to claim 4, wherein the main body portion is provided on a side surface of the carrying portion, and the extending portion is provided between the carrying portion and the housing.

6. The camera module of claim 5, wherein the carrier defines a through hole through which light passes, and at least a portion of the extension portion is curved along a circumference of the through hole.

7. The camera module of claim 4, wherein the extension portion has a first end connected to the body portion and a second end connected to the housing, and

the second end of the extension portion includes a connection portion configured to receive an electrical signal.

8. The camera module according to claim 7, wherein the connection portion is exposed to an outside of the housing through an opening provided in a side surface of the housing.

9. The camera module according to claim 8, wherein the first substrate is disposed on the side surface of the housing.

10. The camera module according to claim 1, wherein both the second coil and the third coil are disposed closer to the optical axis than the first coil.

11. The camera module according to claim 1, characterized in that the shake correction unit includes a frame configured to guide movement of the lens module, and

the frame and the lens module are configured to move together in the first direction by a driving force generated by the second magnet and the second coil.

12. The camera module according to claim 11, wherein a reinforcing plate is provided inside the frame, and a part of the reinforcing plate is exposed outside the frame.

13. The camera module according to claim 11, wherein the lens module is configured to move in the second direction by a driving force generated by the third magnet and the third coil.

14. A camera module, characterized in that the camera module comprises:

a carrier configured to accommodate a lens module therein;

a housing configured to accommodate the lens module and the carrier in the housing;

a focusing unit including a first magnet disposed on the bearing portion and a first coil disposed to face the first magnet in a first direction perpendicular to an optical axis;

a shake correction unit including a second magnet and a second coil disposed to face each other in the first direction perpendicular to the optical axis, and a third magnet and a third coil disposed to face each other in a second direction perpendicular to the optical axis, wherein the second magnet and the third magnet are disposed on the lens module; and

a substrate disposed on the carrier, the second and third coils being disposed on the substrate,

wherein the lens module, the carrying section, the second and third magnets, the second and third coils, and the substrate are configured to move together in the optical axis direction by a driving force generated by the first magnet and the first coil, and

a portion of the substrate is disposed on the housing.

15. The camera module of claim 14, wherein the substrate includes a first body portion, a second body portion, and an extension portion, the second coil being disposed on the first body portion, the third coil being disposed on the second body portion, the extension portion extending from one of the first and second body portions and being disposed between the carrier and the housing.

16. The camera module of claim 15, wherein the extension portion includes a connection portion configured to receive an electrical signal, and wherein the connection portion is secured to the housing.

17. The camera module of claim 15, wherein the first direction is perpendicular to the second direction.

18. The camera module according to claim 17, characterized in that the first body portion is elongated in the first direction, the second body portion is elongated in the second direction, and the extending portion is elongated in the first direction or the second direction and curved around the optical axis direction.

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