KR20220045276A - Camera module and potable device - Google Patents

Abstract

The present invention relates to a camera module to separately operated lens holders and a moving device thereof. According to an embodiment of the present invention, the camera module comprises: a sensor board; an image sensor disposed on the sensor board; a first lens holder having a first lens disposed on an object side; a cylindrical guide member disposed around the first lens holder; covers disposed on both sides of the outer periphery of the guide member; a first driving member having an end part coupled to the guide member; a second lens holder having a second lens disposed between the image sensor and the first lens holder; a second driving member disposed on the outer periphery of the second lens holder; and a plurality of first elastic springs having one end part connected to the outside of the first lens holder and having the other end part connected to the cover. The image sensor and the first and second lenses are aligned in an optical axis direction and the guide member is rotated by the first driving member to move the first lens holder up or down in the optical axis direction.

Description

Camera module and mobile device {CAMERA MODULE AND POTABLE DEVICE}

An embodiment of the invention relates to a camera module and a mobile device having the same.

As smartphones or tablet PCs become popular, camera modules mounted on portable terminals such as smartphones or tablet PCs are replacing portable cameras (digital cameras, etc.). Accordingly, users take it for granted that a high-spec camera is mounted on a portable terminal.

As the development of camera modules to which high-definition sensors are applied has rapidly increased and multi-functional smart phones such as high-magnification phones and foldable phones have been developed, a part of the camera module is protruding, so the height of the camera module with high magnification has been increased. There is a demand to reduce. Recently, the camera module is being applied to mobile devices such as smart phones and double-air vehicles. In addition, an auto focus (AF) function of a camera module of a portable terminal and functions capable of shifting or tilting a lens holder are required.

An embodiment of the invention may provide a camera module capable of driving by separating the lens holders.

An embodiment of the present invention can provide a camera module that has a lens holder for a pop-up and can be adjusted with AF and OIS functions using an internal lens holder.

An embodiment of the invention may provide a mobile terminal having the camera module or a mobile device such as a car.

A camera module according to an embodiment of the present invention includes a sensor board; an image sensor on the sensor board; a first lens holder having a first lens on the object side; a cylindrical guide member around the first lens holder; Covers disposed on both sides of the outer periphery of the guide member; a first driving member having an end coupled to the guide member; a second lens holder having a second lens between the image sensor and the first lens holder; and a second driving member on an outer periphery of the second lens holder, one end connected to the outside of the first lens holder and a plurality of first elastic springs connected to the cover at the other end, the image sensor; The first and second lenses may be aligned in an optical axis direction, and the guide member may be rotated by the first driving member to raise or lower the first lens holder in the optical axis direction.

According to an embodiment of the invention, a main board disposed on the periphery between the first lens holder and the second lens holder; a main case under the main board; a moving bracket to which the second lens holder is coupled to the inside of the main case; and a suspension wire connecting the main board and the sensor board.

According to an embodiment of the present invention, the second driving member may include a first driving unit for moving the second lens holder and the sensor board in a direction perpendicular to an optical axis.

According to an embodiment of the invention, the first driving unit includes a first stator disposed under the main board and a first mover facing the first stator and fixed to the moving bracket, wherein the first stator is a coil. , the first mover may be a coil, and the moving bracket may be moved in a direction perpendicular to the optical axis by the first driving unit.

According to an embodiment of the present invention, the second driving member includes a second driving unit, and the second driving unit faces a second mover that is a coil wound around the second lens holder and the second mover, and a second stator coupled to the moving bracket, and the second driving unit may move the second lens holder up or down in an optical axis direction.

According to an embodiment of the present invention, the guide member has a plurality of cylindrical portions, and the plurality of cylindrical portions include a plurality of rotation grooves to which an end of the first driving member is respectively coupled, and a second rotation groove disposed between the plurality of rotation grooves, respectively. a first cylindrical portion having a one inclined groove; A second cylindrical portion disposed between the first cylindrical portion and the first lens holder and having a plurality of first protrusions coupled to the first inclined grooves, and a plurality of second inclined grooves between the first protrusions. ; a third cylindrical portion disposed between the second cylindrical portion and the first lens holder, the third cylindrical portion having second protrusions coupled to the second inclined grooves, respectively, and a plurality of circumferential grooves penetrating in the circumferential direction; and a fourth cylindrical part disposed between the third cylindrical part and the first lens holder and including a third protrusion coupled to the circumferential groove, wherein the fourth cylindrical part rotates the first to third cylindrical parts. may move the first lens holder in the optical axis direction.

According to an embodiment of the present invention, the fourth cylindrical portion includes a plurality of guide protrusions on the inner periphery, and the guide protrusions are coupled to the outer guide grooves of the first lens holder to be connected to one end of the first elastic spring. there is.

According to an embodiment of the invention, the cover is disposed on both sides of the outer periphery of the first cylindrical portion, a first cover connected to the other end of the first elastic spring; and a second cover disposed outside the first cover, wherein at least one of the first and second covers is moved in the optical axis direction along the first elastic spring to limit the movement of the first lens holder. can

According to an embodiment of the invention, the plurality of first elastic springs may be three or four.

According to an embodiment of the present invention, the second driving member may drive the second lens holder for AF and OIS.

The camera module according to the embodiment of the present invention has a lens holder for pop-up and a lens holder for AF and OIS, so mode control is easy and there is an effect that it is not necessary to move the entire module at the same time.

The camera module according to the embodiment of the present invention can reduce the weight of the actuator by disposing the lens holder for AF and OIS therein.

The camera module according to the embodiment of the present invention may reduce the weight of a moving lens, thereby improving performance.

It is possible to improve the reliability of the camera module and the mobile device having the same according to an embodiment of the present invention.

1 is an exploded perspective view of a camera module according to an embodiment of the present invention.
FIG. 2 is a combined perspective view of the camera module of FIG. 1 .
3 is a perspective view showing a pop-up state of the lens holder in the camera module of FIG.
4 is an example of a cross-sectional side view of the camera module of FIG.
FIG. 5 is a diagram illustrating an example of movement of a substrate having an image sensor in FIG. 4 .
6 is a perspective view of a moving bracket for driving a second lens holder of the camera module in FIG. 1 .
7A and 7B are examples of AF of the second lens holder in the camera module of the present invention.
8 is an example of an exploded perspective view illustrating a guide member for movement of the first lens holder in the camera module of FIG. 1 .
9 is a perspective view illustrating a sliding structure of the guide member around the first lens holder in FIG. 8 .
10 to 12 are side cross-sectional views of the camera module of FIG. 2 , illustrating a coupling relationship of a guide member for movement of the first lens holder.
13 is an example of a mobile device having the camera module of FIG. 2 .

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The technical spirit of the present invention is not limited to some embodiments described, but may be implemented in various different forms, and within the scope of the technical spirit of the present invention, one or more of the components between the embodiments are selectively combined , can be used as a substitute. In addition, terms (including technical and scientific terms) used in the embodiments of the present invention may be generally understood by those of ordinary skill in the art to which the present invention pertains, unless specifically defined and described explicitly. It may be interpreted as a meaning, and generally used terms such as terms defined in advance may be interpreted in consideration of the contextual meaning of the related art. In addition, the terminology used in the embodiments of the present invention is for describing the embodiments and is not intended to limit the present invention. In the present specification, the singular form may also include the plural form unless otherwise specified in the phrase, and when it is described as "at least one (or more than one) of A and (and) B, C", it is combined as A, B, C It can contain one or more of all possible combinations. In addition, in describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only used to distinguish the component from other components, and the essence, order, or order of the component is not determined by the term. And, when it is described that a component is 'connected', 'coupled' or 'connected' to another component, the component is not only directly connected, coupled or connected to the other component, but also with the component It may also include a case of 'connected', 'coupled' or 'connected' due to another element between the other elements. In addition, when it is described as being formed or disposed on "above (above) or below (below)" of each component, the top (above) or bottom (below) is one as well as when two components are in direct contact with each other. Also includes a case in which another component as described above is formed or disposed between two components. In addition, when expressed as "upper (upper) or lower (lower)", a meaning of not only an upper direction but also a lower direction based on one component may be included.

The 'optical axis direction' used below is defined as the optical axis direction of the lens of the camera device. In this case, the optical axis of the lens may correspond to the optical axis of the image sensor. Meanwhile, the 'optical axis direction' may correspond to a 'vertical direction' or a 'z-axis direction'.

The 'autofocus function' used below is to automatically focus on the subject by adjusting the distance from the image sensor by moving the lens in the optical axis direction according to the distance of the subject so that a clear image of the subject can be obtained on the image sensor. defined as a function. Meanwhile, 'auto focus' may be used interchangeably with 'AF (Auto Focus)'.

The 'shake correction function' used below is defined as a function of moving or tilting the lens in a direction perpendicular to the optical axis direction to cancel vibration (movement) generated in the image sensor by an external force. Meanwhile, 'hand shake correction' may be used interchangeably with 'Optical Image Stabilization (OIS)'.

Hereinafter, "dual or triple camera" and "camera device" may be used interchangeably. That is, the camera device may be described as including two or three or more lens modules.

Optical devices include cell phones, mobile phones, smart phones, portable smart devices, digital cameras, laptop computers, digital broadcasting terminals, PDA (Personal Digital Assistants), PMP (Portable Multimedia Player), vehicle camera devices and It may be any one of navigation. However, the type of optical device is not limited thereto, and any device for taking an image or photo may be included in the optical device.

The optical device may include a body. The body may form the appearance of the optical device. The body can accommodate the camera device. A display unit may be disposed on one surface of the body. For example, the display unit and the camera device may be disposed on one surface of the main body, and the camera device may be additionally disposed on the other surface (a surface positioned opposite to the one surface) of the body. The optical device may include a display unit. The display unit may be disposed on one surface of the body. The display unit may output an image captured by the camera device. The optical device may include a camera device. The camera device may be disposed on the body. At least a part of the camera device may be accommodated in the body. A plurality of camera devices may be provided. The camera device may be disposed on one surface of the main body and the other surface of the main body, respectively. The camera device may capture an image of the subject. The camera device may include a lens driving device. The lens driving device may be a lens driving motor or a voice coil motor. The camera device may include at least one or both of an AF actuator and an OIS actuator.

<Example>

Figure 1 is an exploded perspective view of a camera module according to an embodiment of the invention, Figure 2 is a combined perspective view of the camera module of Figure 1, Figure 3 is a perspective view showing a pop-up state of the lens holder in the camera module of Figure 2, Figure 4 is an example of a cross-sectional side view of the camera module of FIG. 2 , FIG. 5 is a diagram illustrating an example of movement of the substrate having an image sensor in FIG. 4 , and FIG. 6 is a bracket for driving the second lens holder of the camera module in FIG. 1 . is a perspective view of, (A) (B) of FIG. 7 is an AF example of the second lens holder in the camera module of the present invention, and FIG. 8 is an exploded view showing cylindrical parts for movement of the first lens holder in the camera module of FIG. It is an example of a perspective view, and FIG. 9 is a perspective view illustrating the sliding structure of the inner cylindrical part around the first lens holder in FIG. 8, and FIGS. 10 to 12 are side cross-sectional views of the camera module of FIG. It is a view for explaining the coupling relationship of the cylindrical parts for.

1 to 4 , a camera module according to an embodiment of the present invention includes a first lens holder 110 having at least one first lens 112 , and a guide member on the outside of the first lens holder 110 . (102), the first driving member 220, the covers 130 and 140, the middle bracket 150, the main board 160, the second driving member 250, the main case 170 on the outside of the guide member 102 ), a moving bracket 180 , a second lens holder 310 having at least one second lens 312 , a substrate 190 and an image sensor 192 .

The first lens holder 110 has a cylindrical shape, includes at least one first lens 112 therein, and has a plurality of guide grooves 115 formed in the optical axis direction on the outer periphery. The first lens 112 may be one or two or more.

The guide member 102 has a cylindrical shape and may include a through hole 61 larger than a diameter of the first lens holder 110 . The first lens holder 110 may be inserted and coupled to the through hole 61 of the first lens holder 110 . Guide protrusions 51 protruding in a vertical direction are disposed on the inner periphery of the guide member 102 , and the guide protrusions 51 are fitted into the guide grooves 115 of the first lens holder 110 to be coupled. there is.

The guide member 102 is rotated in the circumferential direction by the first driving member 220, and by the rotation, the first lens holder 110 is moved in the optical axis direction. As shown in FIG. 3 , the guide member 102 may pop-up or restore the first lens holder 110 to its original position in the optical axis Z direction by the first driving member 220 .

The guide member 102 may be rotated by a driving force of the first driving member 220 transmitted to the outside. The first driving member 220 is coupled to the outer groove 127 of the guide member 102, and may be implemented as a piezoelectric element. When a voltage is applied to the first driving member 220 , mechanical deformation is transferred to the outer groove 127 of the guide member 102 , so that the outer cylindrical portion of the guide member 102 is rotated. When the first lens holder 110 is exposed to the outside of the portable device, by installing a piezoelectric element rather than a large driving member such as a VCM, the first driving member 220 and the guide member 102 are 1 By controlling the pop-up of the lens holder 110, it is possible to adjust the focusing and zooming magnification.

The covers 130 and 140 may include a plurality of first covers 130 disposed around the guide member 102 and a plurality of second covers 140 disposed outside each of the first covers 130 . there is.

The plurality of first covers 130 are respectively disposed on opposite sides of the guide member 102 , have a curved shape, and face along the outer curved surface of the guide member 102 . Each of the first cover 130 may have a length of less than 1/2 of the circumferential length of the guide member 102, for example, 1/3 to 1/5. The plurality of first covers 130 may face each other in the second axis (Y) direction.

The second cover 140 has the same shape as the outer shape of the first cover 130 , and supports the outside of the first cover 130 . Each of the second covers 140 may have a length of less than 1/2 of the circumferential length of the guide member 102, for example, 1/3 to 1/5. The plurality of second covers 140 may face each other in the second axis (Y) direction.

2 and 3 , one end of the first elastic spring 210 may be connected to the upper portion of the first lens holder 110 , and the other end may be connected to the first cover 130 . The first elastic spring 210 may be implemented as a coil spring or a leaf spring, and may include a buffer structure that is bent or bent in multiple stages therein. The first elastic spring 210 provides and supports a predetermined elasticity when the first lens holder 110 is moved up or down in the optical axis direction.

1 and 10 , when the first cover 130 moves more than a predetermined distance when the first lens holder 110 moves in the optical axis direction (ie, pops up), the guide member 102 ) along the outer surface of the optical axis. The first cover 130 may be moved together with the first elastic spring 210 , and the lower outer stop protrusion 137 may be moved along the stop groove 147 of the second cover 140 , , after being moved a predetermined distance, the movement may be restricted by the stopper 148 .

The second cover 140 may be moved from the outside of the first cover 130 in the optical axis direction when the first cover 130 is moved more than a predetermined distance in the optical axis direction. In this case, the stop protrusion 149 disposed on the lower outer side of the second cover 140 may move along the inner groove 159 of the support protrusion 155 , and the movement may be restricted on the inner groove 159 .

1 and 8 to 12 , the guide member 102 may include a plurality of cylindrical portions 120 , 121 , 122 , and 123 . The guide member 102 includes a first cylindrical part 120 on the outside, a second cylindrical part 121 on the inside of the first cylindrical part 120 , and a third cylindrical part on the inside of the second cylindrical part 121 . A fourth cylindrical part 123 may be included inside the part 122 and the third cylindrical part 122 .

The first cylindrical part 120 may be disposed between the first cover 130 and the second cylindrical part 121 . The second cylindrical part 121 may be disposed between the first cylindrical part 120 and the third cylindrical part 122 . The third cylindrical part 122 may be disposed between the second cylindrical part 121 and the fourth cylindrical part 123 . The fourth cylindrical part 123 may be disposed between the third cylindrical part 122 and the first lens holder 110 .

8 and 9 , the first cylindrical part 120 has a plurality of rotation grooves 127 disposed on its outer periphery, and an end of the first driving member 220 is coupled to each of the rotation grooves 127 . can be Each of the rotation grooves 127 is formed to be concave in the circumferential direction of the first cylindrical part 120 , and an end of the first driving member 220 may be fitted and coupled thereto. The first cylindrical part 120 may rotate in a forward direction or in a reverse direction about the optical axis by the driving force of the first driving member 220 .

A plurality of first inclined grooves 125 are included in a region between the rotation grooves 127 of the first cylindrical part 120, and each of the plurality of first inclined grooves 125 penetrates from the inside to the outside. , may extend obliquely from the top to the bottom.

The first protrusion 32 protruding from the lower portion of the outer periphery of the second cylindrical portion 121 may be inserted into the first inclined groove 125 of the first cylindrical portion 120 . The first cylindrical part 121 is moved in the optical axis direction along the first inclined groove 125 and the first protrusion 32 by the rotation of the first cylindrical part 120 . The plurality of first inclined grooves 125 may be disposed opposite to each other. The plurality of first protrusions 32 may protrude from opposite sides to each other in opposite directions.

A plurality of second inclined grooves 31 are formed in the second cylindrical part 121 to penetrate from the inside to the outside, and the second inclined grooves 31 may extend obliquely from the top to the bottom.

The third cylindrical portion 122 may have a plurality of second protrusions 33 protruding from the lower portion of the outer periphery. The plurality of second inclined grooves 31 may be opposed to each other on opposite sides, and may be respectively disposed in a region between the first inclined grooves 125 . The plurality of second protrusions 33 may correspond to the second inclined grooves 31 and may protrude from opposite sides in opposite directions. The third cylindrical portion 122 may be moved in the optical axis direction together with the rotation when the second cylindrical portion 121 is moved in the optical axis direction with rotation.

11 and 12 , the third cylindrical portion 122 may include a plurality of circumferential grooves 34 penetrating in the circumferential direction at the center thereof. The plurality of circumferential grooves 34 may be formed to have a length of less than 1/2 of the circumferential length of the third cylindrical part 122 , for example, 1/3 to 1/5.

The fourth cylindrical portion 123 may include a third protrusion 41 coupled to the circumferential groove 34 at an outer central portion. The third protrusion 41 may be coupled to the circumferential groove 34 of the third cylindrical part 122 . When the third cylindrical portion 122 is rotated and moved in the optical axis direction, the third protrusion 41 is not moved in the circumferential direction in the circumferential groove 34 and is positioned properly. Accordingly, the fourth cylindrical portion 123 is not rotated within the third cylindrical portion 122 but moves only in the optical axis direction.

The fourth cylindrical part 123 includes a guide protrusion 51 coupled to the guide groove 115 on the outside of the first lens holder 110, and the fourth cylindrical part 123 moves in the optical axis direction. In this case, the guide protrusion 51 may raise or lower the first lens holder 110 in the optical axis direction through the guide groove 115 .

That is, when the first to third cylindrical parts 120 , 121 , and 122 are moved in the optical axis direction together with the rotation, the fourth cylindrical part 123 moves only in the optical axis direction to move the first lens holder 110 in the optical axis direction. can make it move

Here, as shown in FIGS. 1, 2 and 3 , one end of the first elastic spring 210 is fixed on the guide protrusion 51 of the fourth cylindrical part 123 , and the other end is the first cover 130 . ) can be coupled to the top. Accordingly, when the first lens holder 110 and the optical axis direction up or down, the first elastic spring 210 supports and enables the movement of the first lens holder 110 in the optical axis direction.

Also, when the first lens holder 110 and the optical axis direction are up, the first cover 130 is moved in the Up direction (ie, the object direction), and the moving distance of the first elastic spring 210 is increased. can increase In addition, the second cover 140 can be moved when the first cover 130 is moved in the optical axis direction, thereby increasing the moving distance of the first elastic spring 210 . Accordingly, the first lens holder 110 maximizes the moving distance in the up direction, and can be stably supported.

The covers 130 and 140 and the guide member 102 are disposed on a middle bracket 150 , and the middle bracket 150 may correspond to the first lens holder 110 through an internal through hole 62 . . Here, the middle bracket 150 may include a sub spring 215 connected to the lower end of the first cover 130 and supporting the lower end of the first cover 130 . The sub springs 215 are arranged in plurality, and may be respectively coupled to opposite sides of a portion to which the other end of the first elastic spring 210 is connected at the lower end of the first cover 130 .

The middle bracket 150 supports the support protrusion 155 , and the support protrusion 155 supports and guides the outside of the covers 130 and 140 .

The main board 160 is disposed under the middle bracket 150 , and the main board 160 has a through hole 62 therein, and may be disposed between the middle bracket 150 and the main case 170 . there is. The main board 160 may have a size smaller than that of the middle bracket 150 and the main case 170 and may not be exposed to the outside.

The main case 170 may extend to the floor through the sidewall to accommodate the main board 160 , the second lens holder 310 , the moving bracket 180 , and the sensor board 192 therein.

1 , the main board 160 may be spaced apart from the sensor board 190 having the image sensor 192 . The main board 170 and the sensor board 190 may be supported and electrically connected by an interposer 185 and a suspension wire 182 .

The second lens holder 310 may be coupled between the main board 170 and the sensor board 190 . The second lens holder 310 may include at least one or a plurality of second lenses 312 . The second lens 312 of the second lens holder 310 may be aligned with the first lens 112 of the first lens holder 110 in the optical axis direction. The first and second lenses 112 and 312 may be aligned with the image sensor 192 in the optical axis direction.

1 and 6 , the moving bracket 180 may include a plurality of receiving grooves 81 . A first driving unit 250 and a second driving unit 255 may be disposed between the moving bracket 180 and the main board 160 . The first driving unit 250 and the second driving unit 255 may be defined as a second driving member. A plurality of the second driving members may be disposed on the outer periphery of the second lens holder 310 .

The first driving unit 250 may include a plurality of first stators 252 and a plurality of first movers 254 opposed to the plurality of first movers 254 . The first stator 252 includes a coil, and may be respectively disposed in a lower corner region of the main board 160 . The first mover 254 includes a receiving groove 81 of the moving bracket 180 . Each of them may be fitted and coupled to each other, and may include a magnet opposite to the first stator 252 . The first driving unit 250 may include an actuator for OIS.

The second driving unit 255 may include a second mover 256 and a plurality of second stators 258 . The second mover 256 includes a coil, and may be wound along an outer periphery of the second lens holder 310 . The plurality of second stators 258 may include magnets, face the second movers 256 and may be respectively disposed between the first movers 254 . The second stator 258 may be coupled to the receiving groove 81 of the moving bracket 180, but is not limited thereto. A first mover 252 and a second stator 258 may be respectively coupled to different regions of the plurality of receiving grooves 81 of the moving bracket 180 . The second driving unit 255 may include an actuator for AF.

The moving bracket 180 may be moved in a direction perpendicular to the optical axis (horizontal direction) by the first driving unit 250 , and at this time, the moving bracket 180 is moved by the horizontal movement of the moving bracket 180 . It moves the suspension wire 182 extending through the , and the sensor board 190 may be moved in the horizontal direction by the movement of the suspension wire 182 . That is, it may be moved from the position of the sensor board 190 of FIG. 4 to the position shown in FIG. 5 , and accordingly, the image sensor 192 may be moved for the OIS function by the first driving unit 250 .

When power is supplied to the second driving unit 255 , electromagnetic force is generated by the second mover 256 disposed around the second lens holder 310 and the second stator 258 opposing it. The lens holder 310 may be raised or lowered in the optical axis direction. That is, the position of the second lens holder 310 as shown in (A) of FIG. 7 is up, and may be moved to a position adjacent to the first lens holder 110 as shown in (B) of FIG. 7 . Accordingly, the second lens holder 310 may be operated for AF by the second driver 255 .

These first and second driving units 250 and 255 may be coupled on the moving bracket 180 to move together with the sensor board 190 for OIS control or by moving the second lens holder 310 in the optical axis direction. can give The second lens holder 310 can be used for AF and OIS, and a coil is wound around it, so that the weight of the second lens holder 310 can be reduced, and movement in the horizontal direction and the optical axis direction is more It can be easy.

Here, as shown in 6, a plurality of second elastic springs 240 supporting the movement of the second lens holder 310 are included, and one end of the plurality of second elastic springs 240 is attached to the movement bracket 180 . connected, and the other end may be connected to the second lens holder 310 . The plurality of second elastic springs 240 may support movement and restoration of the second lens holder 310 .

The first and second driving units 250 and 255 may include Hall sensors for positions of the first and second stators 252 and 258 . The Hall sensor may provide position information so that the positions of the second lens holder 310 and the moving bracket 180 can be moved to their regular positions.

13 is a perspective view illustrating an example of a mobile device to which a camera module according to an embodiment of the present invention is applied.

As shown in FIG. 13 , the mobile terminal 1500 may include a camera module 1520 , a flash module 1530 , and an auto-focus device 1510 provided on one side or the rear side. Here, the autofocus device 1510 may include a surface light emitting laser device and a light receiving unit as a light emitting layer.

The flash module 1530 may include an emitter emitting light therein. The flash module 1530 may be operated by a camera operation of a mobile terminal or a user's control. The camera module 1520 may include an image capturing function and an auto focus function. For example, the camera module 1520 may include an auto-focus function using an image.

The auto-focus device 1510 may include an auto-focus function using a laser. The autofocus device 1510 may be mainly used in a condition in which the autofocus function using the image of the camera module 1520 is deteriorated, for example, in proximity of 10 m or less or in a dark environment.

The above detailed description should not be construed as restrictive in all respects and should be considered as exemplary. The scope of the embodiments should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the embodiments are included in the scope of the embodiments.

Claims (11)

sensor board;
an image sensor on the sensor board;
a first lens holder having a first lens on the object side;
a cylindrical guide member around the first lens holder;
Covers disposed on both sides of the outer periphery of the guide member;
a first driving member having an end coupled to the guide member;
a second lens holder having a second lens between the image sensor and the first lens holder; and
and a second driving member on the outer periphery of the second lens holder,
and a plurality of first elastic springs having one end connected to the outside of the first lens holder and the other end connected to the cover,
The image sensor, the first and second lenses are aligned in the optical axis direction,
The guide member is rotated by the first driving member to up or down the first lens holder in the optical axis direction, the camera module. According to claim 1,
a main board disposed around the first lens holder and the second lens holder;
a main case under the main board;
a moving bracket to which the second lens holder is coupled to the inside of the main case; and
A camera module comprising a suspension wire connecting the main board and the sensor board. 3. The method of claim 2,
The second driving member includes a first driving unit for moving the second lens holder and the sensor board in a direction perpendicular to the optical axis, the camera module. 4. The method of claim 3,
The first driving unit includes a first stator disposed under the main board and a first mover facing the first stator and fixed to the moving bracket,
The first stator is a coil,
The first mover is a coil,
The moving bracket is moved in a direction perpendicular to the optical axis by the first driving unit, the camera module. 4. The method of claim 3,
The second driving member includes a second driving unit,
The second driving unit includes a second mover that is a coil wound around the second lens holder, and a second stator facing the second mover and coupled to the moving bracket,
The second driving unit up or down the second lens holder in the optical axis direction, the camera module. 6. The method according to any one of claims 1 to 5,
The guide member has a plurality of cylindrical parts,
The plurality of cylindrical parts,
a first cylindrical portion having a plurality of rotation grooves to which ends of the first driving member are respectively coupled, and first inclined grooves respectively disposed between the plurality of rotation grooves;
A second cylindrical part disposed between the first cylindrical part and the first lens holder, the second cylindrical part having a plurality of first protrusions coupled to the first inclined grooves, and a plurality of second inclined grooves between the first protrusions. ;
a third cylindrical portion disposed between the second cylindrical portion and the first lens holder, the third cylindrical portion having second protrusions coupled to the second inclined grooves, respectively, and a plurality of circumferential grooves penetrating in the circumferential direction; and
and a fourth cylindrical portion disposed between the third cylindrical portion and the first lens holder and including a third protrusion coupled to the circumferential groove,
The fourth cylindrical portion moves the first lens holder in an optical axis direction by rotating the first to third cylindrical portions. 7. The method of claim 6,
The fourth cylindrical portion includes a plurality of guide protrusions on an inner periphery, the guide protrusions are coupled to the outer guide grooves of the first lens holder, and are connected to one end of the first elastic spring. 7. The method of claim 6,
The cover is disposed on both sides of the outer periphery of the first cylindrical portion, a first cover connected to the other end of the first elastic spring; and a second cover disposed outside the first cover,
At least one of the first and second covers is moved in the optical axis direction along the first elastic spring and limits the movement of the first lens holder, the camera module. 6. The method according to any one of claims 1 to 5,
The plurality of first elastic springs are three or four, the camera module. 6. The method according to any one of claims 1 to 5,
The second driving member drives the second lens holder for AF and OIS, a camera module. A mobile device having the camera module according to claim 5 .

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