KR20190036372A - Camera module - Google Patents

Abstract

According to an embodiment of the present invention, provided is a camera module which comprises: a base having a guide groove formed along a longitudinal direction thereof; a fixing unit accommodating a lens inside, and including a carrier disposed in a fixed state in the guide groove and installed in the guide groove so that the axial direction of the lens corresponds with the longitudinal direction of the base; and a moving unit disposed on one side and the other side of the fixing part, respectively, and individually moving along the guide groove to change a position of the lens. According to an embodiment of the present invention, by providing a fixing unit fixed to the inside of the base, a first moving unit disposed on one side of the fixing unit, and a second moving unit disposed on the other side of the fixing unit and implementing a focusing function, thereby implementing fast optical zoom and an automatic focus adjustment function.

Description

Camera module {CAMERA MODULE}

The present invention relates to a camera module, and more particularly, to a camera module that performs a zooming and focusing function.

2. Description of the Related Art [0002] With the recent development of compact and lightweight digital cameras, mobile communication terminals equipped with optical lenses and camera elements have become popular.

Here, the camera module mounted on the mobile communication terminal is made compact so as not to increase the size of a portable device, and various functions such as an optical zoom function, an automatic focus adjustment function, a shake correction function, and a light amount adjustment function are applied.

The camera module includes a lens barrel in which a plurality of lenses are accommodated, a carrier having a lens barrel inserted therein and movable in an optical axis direction, a base for supporting the carrier, And an actuator that moves from one side to the other side or the like.

However, since the above-described conventional camera module is required to perform the optical zooming and the auto-focusing function together by using one lens barrel, the movement time of the carrier is long and therefore the implementation of each function is long, There is a problem that the probability of occurrence of a failure or a functional error increases with frequent movement. In addition, when any one of the plurality of lenses needs to be replaced, there is a problem that the lens barrel must be integrally replaced.

Also, in the conventional camera module, there is a problem that a flow occurs in the carrier due to a manufacturing tolerance between the carrier and the base supporting the carrier, whereby the direction of the lens may be distorted or the automatic focus adjustment can not be performed.

Korean Patent Registration No. 10-1431182

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a camera module capable of independently performing zooming and focusing functions through a plurality of independently operable carriers, .

According to an aspect of the present invention, there is provided a camera module including: a base having a guide groove formed along a longitudinal direction thereof; And a carrier installed in the guide groove such that the axial direction of the lens accommodates the lens in the inner side and coincides with the longitudinal direction of the base, ; And a moving part which is disposed on one side and the other side of the fixing part, and which moves individually along the guide groove to change the position of the lens.

A coil installed in the base and disposed in a moving section of the moving section; And a moving magnet installed on the moving part and moving the moving part by a magnetic force generated in the coil.

And a ball member for supporting the moving part and performing rolling motion to move the moving part.

The moving member may be formed with a ball member receiving groove in which the ball member is received.

And a guide pin installed on the base and contacting the ball member to guide movement of the ball member.

The ball member may be received in the ball member receiving groove in a state where the ball member is opposed to one side and the other side of the guide pin with respect to the guide pin and restrict movement of the moving part with respect to the width direction of the base .

The plurality of ball members opposed to one side and the other side of the guide pin each have one contact point on the guide pin and at least one further contact point on the inner surface of the moving part.

Wherein the ball member is received in the ball member receiving groove in a state of being in contact with a plurality of guide pins disposed opposite to one side and the other side of the ball member about the ball member, It is possible to limit the movement of the negative.

The ball member may have one contact point on each of the plurality of guide pins and at least one further contact point on the inner surface of the moving part.

A sensing magnet installed in the moving unit; And a Hall sensor disposed at a position opposite to the sensing magnet and sensing a position of the moving unit by sensing a magnetic force of the sensing magnet.

A sensing magnet provided on a moving part disposed on one side of the fixing part and a sensing magnet provided on a moving part disposed on the other side of the fixing part are arranged so that the width direction of the base And can be disposed at positions opposite to each other.

The moving unit may include a first moving unit which is disposed on one side of the fixing unit and linearly moves along the guide groove to implement a zoom function; And a second moving unit which is disposed on the other side of the fixing unit and moves linearly along the guide groove to realize a focusing function.

And a retainer provided in the ball member receiving groove for supporting the ball member so that the ball member can perform rolling motion at a predetermined position.

The Hall sensor may be disposed in front of and behind the sensing magnet along the moving direction of the sensing magnet.

As described above, according to the embodiment of the present invention, it is possible to provide a portable terminal which is provided with a fixing part fixed to the base inside the base, a first moving part arranged on one side of the fixing part and realizing a zoom function, And a second moving unit that implements a focusing function, thereby realizing a quick optical zoom and an automatic focusing function.

In addition, the present invention enables each of the moving units to be individually driven, and each moving unit realizes one function through individual driving, so that the driving time can be shortened and the probability of failure or malfunction can be lowered. So that it can be easily maintained and managed.

Further, the present invention is characterized in that the ball member received in the receiving groove of the moving part is opposed to one side and the other side of the guide pin with the guide pin as a center, thereby restricting the movement of the moving part with respect to the width direction of the base, So that it is possible to stably drive the moving part, thereby obtaining a high-quality image at the time of photographing.

1 is a perspective view illustrating a camera module according to an embodiment of the present invention.
2 is an exploded perspective view illustrating a camera module according to an embodiment of the present invention.
3 is a cross-sectional view taken along the line III-III in FIG.
4 is a cross-sectional view taken along the line IV-IV in Fig.
5 is a cross-sectional view taken along the line VV in Fig.
Fig. 6 is an enlarged view of the portion "A" in Fig. 5 enlarged.
7 is an enlarged view showing a modified embodiment of the "A" portion of Fig. 5. Fig.
8 is a perspective view illustrating a camera module according to another embodiment of the present invention.
9 is an exploded perspective view showing a camera module according to another embodiment of the present invention.
10 is a cross-sectional view taken along line XX in Fig.
11 is a cross-sectional view taken along the line XI-XI in Fig.
12 is a cross-sectional view taken along line XII-XII of FIG.

Various embodiments will now be described in detail with reference to the accompanying drawings. The embodiments described herein can be variously modified. Specific embodiments are described in the drawings and may be described in detail in the detailed description. It should be understood, however, that the specific embodiments disclosed in the accompanying drawings are intended only to facilitate understanding of various embodiments. Accordingly, it is to be understood that the technical idea is not limited by the specific embodiments disclosed in the accompanying drawings, but includes all equivalents or alternatives falling within the spirit and scope of the invention.

Terms including ordinals, such as first, second, etc., may be used to describe various elements, but such elements are not limited to the above terms. The above terms are used only for the purpose of distinguishing one component from another.

In this specification, the terms "comprises" or "having ", and the like, are intended to specify the presence of stated features, integers, steps, operations, elements, parts, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof. It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

In the meantime, "module" or "part" for components used in the present specification performs at least one function or operation. Also, "module" or "part" may perform functions or operations by hardware, software, or a combination of hardware and software. Also, a plurality of "modules" or a plurality of "parts ", other than a" module "or" part ", to be performed in a specific hardware or performed in at least one processor may be integrated into at least one module. The singular expressions include plural expressions unless the context clearly dictates otherwise.

In addition, in the description of the present invention, when it is judged that the detailed description of known functions or constructions related thereto may unnecessarily obscure the gist of the present invention, the detailed description thereof will be abbreviated or omitted.

1 is a perspective view illustrating a camera module according to an exemplary embodiment of the present invention, FIG. 2 is an exploded perspective view illustrating a camera module according to an exemplary embodiment of the present invention, FIG. 3 is a cross- Fig. 4 is a sectional view taken along the line IV-IV in Fig. 1, Fig. 5 is a sectional view taken along the line VV in Fig. 1, Fig. 6 is an enlarged view of the portion "A" , And Fig. 7 is an enlarged view showing a modified embodiment of the "A" portion of Fig.

1 and 2, a camera module (hereinafter, referred to as 'camera module') according to an embodiment of the present invention is a micro camera module applicable to a mobile device such as a smart phone and includes a base 10.

The base 10 is formed in a quadrangle structure having a predetermined height and the carrier 20 to be described later is accommodated inside the base 10. More specifically, inside the base 10, a guide groove 11 is formed in which the carrier 20 is received along the longitudinal direction (X-axis direction). The guide groove 11 may be formed to be recessed at a predetermined depth along the height direction (Z-axis direction) of the base 10 from the upper surface of the base 10.

3, a base 10 on which the guide groove 11 is formed is provided at one surface thereof with a fixing portion 21 for supporting the outer surface of the fixing portion 21 to restrict the movement of the fixing portion 21 May be formed. The fixing portion 13 is formed in a shape corresponding to the outer surface of the fixing portion 21 so as to cover the outer surface of the fixing portion 21. The fixing portion 21 is formed in a shape corresponding to the height direction of the base 10 from one surface of the base 10. [ And may be recessed to a predetermined depth.

Further, the base 10 can accommodate a coil 40 to be described later on the inside.

2 and 3, a coil receiving groove 15 in which a coil 40 is received may be formed on a lower surface of the base 10, which is opposite to the guide groove 11. As shown in FIG. The coil receiving groove 15 is formed to have a size corresponding to the coil 40 and may be formed through the base 10 along the height direction of the base 10 from the lower surface of the base 10. The coil receiving grooves 15 may be formed along the longitudinal direction of the base 10 so that a plurality of coils 40 may be installed. 3, a step 17 may be formed on the inner side of the base 10 in which both ends of the yoke 40a provided at the center of the coil 40 are hooked.

The camera module also includes a carrier 20.

1, the carrier 20 accommodates the lens 30 on the inner side, and the lens 30 is mounted on the guide groove 11 of the base 10 so that the axial direction of the lens 30 is aligned with the longitudinal direction of the base 10. [ Respectively. Here, the lens 30 may have a single structure or a barrel structure in which a plurality of lenses are accommodated.

The carrier 20 includes a fixed portion 21 fixed to the base 10 and a movable portion 23 movable along the guide groove 11. The fixed portion 21 is fixed to the base 10,

3 and 4, the fixing portion 21 is fixed to the guide groove 11 of the base 10. More specifically, the fixing portion 21 accommodates the lens 30 on the inner side, is placed in the fixed state in the middle of the guide groove 11, and is seated in the fixing portion supporting groove 13 formed in the base 10 . A guide pin seating groove 211 may be formed on the lower surface of the fixing portion 21 to be mounted on the outer surface of the guide pin 70 to be described later.

3 and 5, the moving part 23 is disposed on one side and the other side of the fixing part 21 along the longitudinal direction of the base 10 and is moved individually along the guide groove 11 The position of the lens 30 is changed. Here, the moving parts 23 individually moved along the guide grooves 11 play different roles. More specifically, the first moving part 23a disposed on one side of the fixing part 21 may linearly move along the guide groove 11 to implement a zoom function. The second moving part 23b disposed on the other side of the fixing part 21 may linearly move along the guide groove 11 to realize a focusing function. That is, the camera module includes a fixing part 21 fixed to the guide groove 11, and a first fixing part 21 which is moved away from or closer to the fixing part 21 by sliding on one side and the other side of the fixing part 21, The zooming function and the focusing function can be simultaneously implemented through the moving unit 23a and the second moving unit 23b.

Further, the moving part 23 can be formed in a structure in which the width of the cross section is gradually widened from the upper side to the lower side. More specifically, the moving part 23 has a length of the lower structure 231 contacting the one surface of the base 10 so that the stable movement of the moving structure 23 can be achieved when the slide structure is moved. Can be formed larger than the length.

Further, the moving part 23 can receive the movable magnet 50 to be described later. More specifically, the lower structure 231 of the moving unit 23 may be provided with a first magnet receiving groove 2311 in which the moving magnet 50 is received. The first magnet receiving groove 2311 may be formed through the lower surface of the moving part 23 or may be formed at a position adjacent to the lower surface of the moving part 23 so that the moving magnet 50 may be spaced apart from the coil 40 by a predetermined distance . For example, the first magnet receiving groove 2311 may be formed in a slot shape.

Further, a ball member 60 to be described later can be accommodated in the moving part 23. [ More specifically, a ball member receiving groove 2313 in which the ball member 60 is accommodated may be formed in the lower structure 231 of the moving unit 23. The ball member receiving groove 2313 is formed by being recessed to a predetermined depth from the lower surface of the moving part 23 and is provided with a moving part 23 so as to prevent the ball member 60 from coming off when the moving part 23 moves. (X-axis direction). The depth of the ball member receiving groove 2313 is set to be smaller than the outer diameter of the ball member 60 so that the moving part 23 can be moved through the ball member 60 while being supported by the ball member 60 . Also, a plurality of ball member receiving grooves 2313 may be formed. More specifically, the ball member receiving grooves 2313 are formed on one side and the other side of the first magnet receiving grooves 2311 along the width direction of the base 10 about the first magnet receiving grooves 2311 . A plurality of ball members 60 are accommodated along the width direction of the base 10 so that the ball member receiving grooves 2313 disposed at the positions where the guide pins 70 are installed among the plurality of ball member receiving grooves 2313 As shown in FIG.

Further, the moving magnet 23 can receive the detecting magnet 80 to be described later. More specifically, a protruding piece 2331 protruding in the width direction of the base 10 from the outer surface is formed in the upper structure 233 of the moving part 23, A second magnet receiving groove 2333 capable of inserting the sensing magnet 80 in the width direction can be formed.

In addition, the camera module may further include a coil 40 and a movable magnet 50.

3 and 5, the coil 40 is installed in the coil receiving groove 15 formed in the base 10 and is disposed below the first moving part 23a and the second moving part 23b, respectively . Further, the coil 40 may be formed to have a predetermined length and be disposed in a moving section of the moving section 23. The distance between the moving part 23 and the coil 40 is limited by the stepped portion 17 of the base 10 on the inner side of the coil 40. When a current is applied to the coil 40, And a yoke 40a serving as a magnetic path may be provided.

The movable magnet 50 is installed in the first magnet accommodating groove 2311 provided in the first moving part 23a and the second moving part 23b and when the current is applied to the coil 40, The first moving part 23a and the second moving part 23b can be moved by the magnetic force generated in the first moving part 23a.

In addition, the camera module may further include a ball member 60 and a guide pin 70.

2 and 5, the ball member 60 can be received in the ball member receiving groove 2313 of the moving part 23 and can support the moving part 23. The ball member 60 is kept in contact with the base 10 and the guide pin 70 by the attraction force acting on the yoke 40a and the magnet 50, (23) is moved, it is possible to smoothly move the moving part (23) by performing rolling motion. Here, the magnet 50 can be moved by the interaction between the magnetic field of the magnet 50 and the current flowing through the coil 40. For example, the ball member 60 includes a first ball member 60 received in a ball member receiving groove 2313 formed on one side of the first magnet receiving groove 2311 and contacting the base 10, And a second ball member 60 received in the ball receiving groove 2313 formed on the other side of the receiving groove 2311 and contacting the guide pin 70. The ball member 60 may be formed of any one of steel, stainless steel, and ceramics.

The guide pin 70 is provided in the guide groove 11 and contacts the ball member 60 received in the ball member receiving groove 2313 to support the ball member 60 and move the ball member 60 Can guide. The guide pin 70 is formed to have a length corresponding to the length of the guide groove 11 and can be fixed to the guide pin receiving groove 19 formed in the base 10. For example, the guide pin 70 may be formed as a columnar structure having a circular cross section, and may be formed of any one of steel, stainless steel, and ceramics. The guide pin receiving groove 19 may be formed in a shape corresponding to the outer surface of the guide pin 70 and may be formed in an arc shape that surrounds the outer surface of the guide pin 70 by half or more than 1/3 .

On the other hand, the ball member 60 can limit the movement of the moving part 23. [

6, a plurality of ball members 60 are accommodated in the ball member receiving grooves 2313 to guide the guide pins 70 along the width direction of the base 10 about the guide pins 70 And may be disposed opposite to the one side and the other side. Here, the plurality of ball members 60 may each have one contact point CP1 on the guide pin 70 and at least one further contact point CP2 on the inner surface of the moving unit 23. Thus, the ball member 60 can limit the movement of the moving part 23 with respect to the width direction of the base 10. For example, each of the ball members 60 may have two contact points CP2 on the inner surface of the moving portion 23.

In addition, the ball member 60 is supported by the plurality of guide pins 70 to limit the movement of the moving part 23. [

7, the ball member 60 is accommodated in the ball member receiving groove 2313, and is disposed along one side of the ball member 60 along the width direction of the base 10 with respect to the ball member 60, And can be supported by a plurality of guide pins 70 disposed opposite to each other. The ball member 60 accommodated in the ball member receiving groove 2313 is inserted into a plurality of guide pins 70 disposed opposite to one side and the other side of the ball member 60 along the width direction of the base 10 It may have one contact point CP1 and at least one further contact point CP2 on the inner surface of the moving part 23. [ Thus, the ball member 60 can limit the movement of the moving part 23 with respect to the width direction of the base 10. For example, the ball member 60 may have three contact points CP2 on the inner surface of the moving part 23. [

The camera module may further include a sensing magnet 80 and a hall sensor 90.

Referring to FIGS. 1 and 2, the sensing magnet 80 may be installed in the second magnet receiving groove 2333 formed in the protruding piece 2331 of each moving part 23.

The hall sensor 90 is disposed at a position opposite to the sensing magnet 80 along the moving direction of the moving unit 23 and senses the magnetic force of the sensing magnet 80 when the moving unit 23 moves, The position of the portion 23 can be detected. For example, the Hall sensor 90 may be attached to a printed circuit board (not shown) and installed in the base 10.

Meanwhile, the sensing magnets 80 provided on each of the moving parts 23 may be disposed at different positions along the width direction of the base 10. More specifically, the detecting magnet 80 is provided on a moving part 23 disposed on one side of the fixing part 21 along the longitudinal direction of the base 10, The sensing magnet 80 provided on the moving part 23 disposed on the other side of the housing 21 is disposed at a position facing each other along the width direction of the base 10 with respect to the center axis of the lens 30 . Accordingly, it is possible to precisely detect the position of each moving part 23 by preventing the magnetic forces of the plurality of sensing magnets 80 superimposed on one hall sensor 90 from being sensed. In addition, a plurality of sensing magnets 80 may be provided on the moving part 23. [ Thus, the position of the moving part 23 can be detected more accurately.

Hereinafter, a camera module according to another embodiment of the present invention will be described.

For the sake of descriptive convenience, the same reference numerals are used for explaining the camera module according to another embodiment of the present invention, and the same or a duplicated description will be omitted.

9 is an exploded perspective view illustrating a camera module according to another embodiment of the present invention. FIG. 10 is a cross-sectional view taken along line XX of FIG. 8. FIG. to be. 11 is a cross-sectional view taken along line XI-XI of FIG. 8, and FIG. 12 is a cross-sectional view taken along line XII-XII of FIG.

8 and 9, a camera module according to another embodiment of the present invention includes a base 10.

The base 10 is formed in a rectangular shape having a predetermined height, and a carrier 20 to be described later is accommodated inside the base 10. A guide groove 11 is formed in the base 10 to accommodate the carrier 20 along the longitudinal direction (X-axis direction).

Further, the base 10 can accommodate the coil 40 inside.

9 and 11, a coil receiving groove 15 in which a coil 40 is received may be formed on the upper surface of the base 10. The coil receiving groove 15 may be formed to have a size corresponding to the coil 40 and may be formed to be recessed at a predetermined depth along the height direction of the base 10 from the upper surface of the base 10. The coil receiving grooves 15 may be formed along the longitudinal direction of the base 10 so that a plurality of coils 40 may be installed.

In addition, the camera module according to another embodiment of the present invention includes a carrier 20.

8, the carrier 20 accommodates the lens 30 on the inner side, and the lens 30 is inserted into the guide groove 11 of the base 10 so that the axial direction of the lens 30 is aligned with the longitudinal direction of the base 10. [ Respectively.

The carrier 20 includes a fixed portion 21 integrally formed with the base 10 and a movable portion 23 movable along the guide groove 11. As shown in Fig.

10 and 11, the fixing portion 21 is integrally formed on the base 10 and is fixed to the guide groove 11. As shown in FIG. More specifically, the fixing portion 21 accommodates the lens 30 on the inner side, is integrally formed on the base 10, and is fixed in the middle of the guide groove 11.

10 and 12, the moving part 23 is disposed on one side and the other side of the fixing part 21 along the longitudinal direction of the base 10, and is moved individually along the guide groove 11 The position of the lens 30 is changed. Here, the moving parts 23 individually moved along the guide grooves 11 play different roles. More specifically, the first moving part 23a disposed on one side of the fixing part 21 may linearly move along the guide groove 11 to implement a zoom function. The second moving part 23b disposed on the other side of the fixing part 21 may linearly move along the guide groove 11 to realize a focusing function.

Further, the moving part 23 may be formed in a shape corresponding to the guide groove 11. For example, the moving part 23 may be formed in a circular ring shape in which a lens is housed inside.

11 and 12, a moving magnet 50, which will be described later, can be accommodated in the moving part 23. [ More specifically, one side and the other side of the moving part 23 are provided with a wing part 234 extending outward from the outer surface of the moving part 23 to receive the moving magnet 50, and the wing part 234 And a first magnet receiving groove 2311 in which the movable magnet 50 is received may be formed on the inner side.

Further, a ball member 60 to be described later can be accommodated in the moving part 23. [ More specifically, the wing portion 234 of the moving portion 23 may be formed with a ball member receiving groove 2313 in which the ball member 60 is received. The ball member receiving groove 2313 is formed by being recessed to a predetermined depth from the lower surface of the wing portion 234 and is provided with a moving portion 23 so as to prevent the ball member 60 from being separated when the moving portion 23 moves. (X-axis direction). The depth of the ball member receiving groove 2313 is set to be smaller than the outer diameter of the ball member 60 so that the moving part 23 can be moved through the ball member 60 while being supported by the ball member 60 . Also, a plurality of ball member receiving grooves 2313 may be formed.

10 and 12, the moving magnet 23 may receive a detecting magnet 80 to be described later. More specifically, a protruding piece 2331 protruding outward from the outer surface of the moving part 23 is formed on the lower side of the moving part 23, and insertion of the sensing magnet 80 into the protruding piece 2331 The second magnet receiving groove 2333 can be formed.

In addition, the camera module according to another embodiment of the present invention may further include a coil 40 and a movable magnet 50.

9 and 12, the coil 40 is installed in the coil receiving groove 15 formed in the base 10 and is disposed below the first moving part 23a and the second moving part 23b, respectively . Further, the coil 40 may be formed to have a predetermined length and be disposed in a moving section of the moving section 23. Meanwhile, a yoke 40a, which acts as a magnetic path, may be provided inside the coil 40 when a current is applied to the coil 40. [

9 and 11, the movable magnet 50 is installed in the first magnet receiving groove 2311 provided in the first moving part 23a and the second moving part 23b, The first moving part 23a and the second moving part 23b can be moved by the magnetic force generated in the coil 40. [

In addition, the camera module according to another embodiment of the present invention may further include a ball member 60 and a guide pin 70.

9 and 11, the ball member 60 can be received in the ball member receiving groove 2313 of the moving part 23 and can support the moving part 23. The ball member 60 is always kept in contact with the base 10 and the guide pin 70 to be described later by the attraction force acting on the yoke 40a and the magnet 50, When the moving unit 23 is moved, the moving unit 23 can be smoothly moved by performing rolling motion. Here, the magnet 50 can be moved by the interaction between the magnetic field of the magnet 50 and the current flowing through the coil 40. For example, the ball member 60 includes a first ball member 60 accommodated in a ball member receiving groove 2313 formed on one side of the first magnet receiving groove 2311 and contacting the guide pin 70, And a second ball member 60 received in the ball receiving groove 2313 formed on the other side of the magnet receiving groove 2311 and contacting another guide pin 70.

9 and 11, a plurality of guide pins 70 are provided on one side and the other side of the base 10 about a moving part 23 accommodated in the guide groove 11, It is possible to contact the ball member 60 accommodated in the ball member receiving groove 2313 of the wing portion 234 to guide the movement of the ball member 60 while supporting the ball member 60. The guide pin 70 is formed to have a length corresponding to the length of the guide groove 11 and may be fixed to a plurality of guide pin receiving grooves 19 formed in the base 10.

On the other hand, the ball member 60 can limit the movement of the moving part 23. [

6, a plurality of ball members 60 are accommodated in the ball member receiving grooves 2313 to guide the guide pins 70 along the width direction of the base 10 about the guide pins 70 And may be disposed opposite to the one side and the other side. Here, the plurality of ball members 60 may each have one contact point CP1 on the guide pin 70 and at least one further contact point CP2 on the inner surface of the moving unit 23. Thus, the ball member 60 can limit the movement of the moving part 23 with respect to the width direction of the base 10.

On the other hand, the ball member receiving groove 2313 may be provided with a retainer 61.

9 and 12, the retainer 61 is provided in the ball member receiving groove 2313, and a plurality of support grooves (not shown) formed on the inner side so that the ball member 60 can perform rolling motion at a predetermined position, It is possible to support the ball member 60 through the through hole 61a. For example, the plurality of support grooves 61a may be formed to have a size capable of performing one ball member 60 or a plurality of ball members 60 at the same time.

In addition, the camera module according to another embodiment of the present invention may further include a sensing magnet 80 and a hall sensor 90.

9 and 10, the sensing magnet 80 may be installed in the second magnet receiving groove 2333 formed in the protruding piece 2331 of each moving part 23.

The hall sensor 90 is disposed at a position opposite to the sensing magnet 80 along the moving direction of the moving unit 23 and senses the magnetic force of the sensing magnet 80 when the moving unit 23 moves, The position of the portion 23 can be detected. For example, the Hall sensor 90 may be attached to a printed circuit board (not shown) and installed in the base 10.

Also, a plurality of hall sensors 90 may be provided.

That is, when the distance to which the moving unit 23 is to move is longer than a predetermined distance (for example, a distance at which the sensing magnet 80 can be detected by the hall sensor 90) And may be disposed in front of and behind the sensing magnet 80 along the moving direction of the magnet 80. [

Referring to FIG. 11, a space may be formed at the lower end of the guide pin receiving groove 19. The sensing magnet 80 is installed in the second magnet receiving groove 233 and the hall sensor 90 is installed in the base 10. The present invention is not limited to this, (90) may be provided in a space formed at a lower end of the guide pin receiving groove (19). Since the sensing magnet 80 and the hall sensor 90 are installed in the space, the height of the base 10 can be lowered, thereby minimizing the overall height of the camera module.

Further, the base 10 may be formed at a height that does not disturb the movement of the moving part 23. [ Specifically, the lower end of the base 10 is formed to be spaced apart from the magnet 80 inserted in the protruding piece 2331 of the moving part 23 by a predetermined distance. The distance between the lower end of the base 10 and the magnet 80 can be minimized to minimize the height of the base 10.

The camera module according to an embodiment of the present invention may further include a cover (not shown) for preventing the carrier 20 from coming off. The cover may be provided at a predetermined distance from the carrier 20.

As described above, according to the embodiment of the present invention, the fixing part 21 fixed to the base 10 inside the base 10, the first moving part 12 disposed on one side of the fixing part 21, And the second moving part 23b which is disposed on the other side of the fixing part 21 and implements the focusing function, thereby realizing a quick optical zoom and an automatic focusing function.

In addition, since each moving unit 23 can be driven independently and each moving unit 23 can perform one function through individual driving, the driving time can be shortened and the probability of failure or malfunction can be reduced And can be separately attached and detached even when parts are replaced, so that maintenance and management can be facilitated.

The present invention is characterized in that the ball member 60 accommodated in the receiving groove of the moving part 23 is disposed opposite to one side and the other side of the guide pin 70 about the guide pin 70, It is possible to prevent the moving part 23 from being displaced from the set position, thereby enabling stable driving of the moving part 23. As a result, it is possible to stably drive the moving part 23, Images can be acquired.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the invention as defined by the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

10. Base
11. Guide groove 13. Fixing support groove
15. Coil receiving groove 17. Step
19. Guide pin receiving groove
20. Carrier
21. Fixed part 211. Guide pin seating groove
23. Moving part
23a. The first moving part 23b. The second moving part
231. Substructure
2311. First magnet receiving groove 2313. Ball member receiving groove
233. Superstructure
2331. Projection piece 2333. Second magnet receiving groove
234. Wing
30. Lens
40. Coil
40a. York
50. Movable Magnet
60. Ball member
61. Retainer
61a. Support groove
70. Guide pin
80. Detection magnet
90. Hall sensor

Claims (14)

A base on which a guide groove is formed along the longitudinal direction; And
And a carrier which is installed in the guide groove such that an axial direction of the lens accommodates a lens inside and coincides with a longitudinal direction of the base,
The carrier
A fixing part arranged to be fixed to the guide groove; And
And a moving unit which is disposed on one side and the other side of the fixing unit and moves individually along the guide groove to change the position of the lens. The method according to claim 1,
A coil installed in the base and disposed in a moving section of the moving section; And
And a movable magnet installed on the moving part to move the moving part by a magnetic force generated in the coil. The method according to claim 1,
And a ball member for supporting the moving part and performing rolling motion to move the moving part. The method of claim 3,
And a ball member receiving groove in which the ball member is received is formed in the moving unit. 5. The method of claim 4,
And a guide pin installed on the base and contacting with the ball member to guide movement of the ball member. 6. The method of claim 5,
The ball-
And is accommodated in the ball member receiving groove so as to be opposed to one side and the other side of the guide pin with respect to the guide pin, thereby restricting movement of the moving part with respect to a width direction of the base. The method according to claim 6,
Wherein the plurality of ball members opposed to one side and the other side of the guide pin each have one contact point on the guide pin and at least one further contact point on the inner surface of the moving part. 6. The method of claim 5,
The ball-
The ball member is received in the ball member receiving groove in a state of being in contact with a plurality of guide pins disposed opposite to one side and the other side of the ball member with respect to the ball member to limit the movement of the moving portion with respect to the width direction of the base Camera module. 9. The method of claim 8,
Wherein the ball member has one contact point at each of the plurality of guide pins and at least one further contact point on the inner surface of the moving part. The method according to claim 1,
A sensing magnet installed in the moving unit; And
And a Hall sensor disposed at a position opposite to the sensing magnet and sensing a position of the moving unit by sensing a magnetic force of the sensing magnet. 11. The method of claim 10,
A sensing magnet provided on a moving part disposed on one side of the fixing part and a sensing magnet provided on a moving part disposed on the other side of the fixing part are arranged so that the width direction of the base And are disposed at positions facing each other. The method according to claim 1,
The moving unit includes:
A first moving unit which is disposed on one side of the fixing unit and linearly moves along the guide groove to implement a zoom function; And
And a second moving unit which is disposed on the other side of the fixing unit and linearly moves along the guide groove to implement a focusing function. 8. The method of claim 7,
And a retainer installed in the ball member receiving groove for supporting the ball member so that the ball member can perform rolling motion at a predetermined position. 11. The method of claim 10,
Wherein the hall sensor is disposed in front of and behind the sensing magnet along a moving direction of the sensing magnet.

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