KR20230089533A - Camera Module - Google Patents

Abstract

A camera module is provided. The camera module includes: a lens part including one or more lenses disposed along an optical axis direction; an image sensor which light passing through the lens part enters; a first module including a first driving part capable of moving the lens part in the optical axis direction; and a second module including a second driving part capable of moving the image sensor in a direction perpendicular to the optical axis direction. The first module includes: a lens holder that supports the lens part and at least partly overlaps the second module in a first direction perpendicular to the optical axis direction; and a housing in which the lens holder is accommodated. Therefore, it is possible to provide a camera module that has enough space to secure driving force but does not increase the total height.

Description

Camera Module {Camera Module}

The present invention relates to a camera module.

Recently, camera modules have been employed in mobile communication terminals such as smart phones, tablet PCs, and laptop computers.

In addition, the camera module is provided with an actuator having a focus adjustment function and a shake correction function in order to generate a high-resolution image. For example, the focus is adjusted by moving the lens module in the direction of an optical axis (Z-axis), or shaking is corrected by moving the lens module in a direction perpendicular to the optical axis (Z-axis).

In order to further improve the performance of the camera module, the weight of the lens module may increase, and a large driving unit may be required to move the heavy lens module. Meanwhile, in a camera module applied to various devices such as a mobile device, the size of the camera module needs to be slim due to the limitation of the internal space of the device. Accordingly, there is a demand for a camera module having a structure capable of stably controlling a high-performance lens module and having a slim size.

The present invention has been made to solve at least some of the problems of the prior art as described above, and to provide a camera module that can have a sufficient space for securing driving force without increasing the overall height.

In order to achieve the above object, in embodiments of the present invention, a lens unit including one or more lenses disposed along the optical axis direction; an image sensor into which light passing through the lens unit is incident; A first module including a first driver capable of moving the lens unit in the optical axis direction; and a second module including a second driver capable of moving the image sensor in a direction perpendicular to the optical axis direction, wherein the first module supports the lens unit and at least a portion thereof is perpendicular to the second module and the optical axis direction. a lens holder overlapping in a direction; and a housing in which the lens holder is accommodated.

In embodiments, the lens holder may include a body part to which the lens part is coupled; and an extension portion protruding from the body portion in the optical axis direction, and a virtual first extension line extending in a first direction from an end portion of the extension portion in the optical axis direction may pass through the second module.

In embodiments, the first driving unit may include a first driving coil; a first drive magnet facing the first drive coil; and a first position sensor capable of detecting the position of the first driving magnet.

In embodiments, the first drive magnet may be disposed on the extension and the first drive coil may be fixed relative to the housing.

In embodiments, the first module further includes a plurality of first ball members disposed between the housing and the lens holder, and the plurality of first ball members form a first column in which the plurality of balls are parallel to the optical axis direction. forming a first ball group; and a second ball group in which a plurality of balls form a second column parallel to the optical axis direction and spaced apart from the first column.

In embodiments, the number of balls constituting the first ball group and the number of balls constituting the second ball group may be different from each other.

In embodiments, the first ball group includes a plurality of first main balls and one or more first sub balls disposed between the plurality of first main balls, and the diameter of the first sub ball is the diameter of the first main ball. may be smaller than

In embodiments, the second ball group includes a plurality of second main balls and one or more second sub balls, and the distance between the first main balls may be greater than the distance between the second main balls.

In embodiments, the first module further includes a first yoke disposed spaced apart from the first driving magnet in a first direction, and the point of application of the magnetic force received by the first yoke by the first driving magnet is greater than that of the second ball group. It may be arranged close to the first ball group.

In embodiments, the housing or lens holder may include a first guide groove in which a first ball group is accommodated; and a second guide groove in which the second ball group is accommodated, and a length of the first guide groove in an optical axis direction may be greater than or equal to a length of the second guide groove in an optical axis direction.

In embodiments, the camera module further includes a reinforcing member disposed in at least one of the first guide groove and the second guide groove, and the reinforcing member is a material having a stiffness higher than that of a material constituting at least a part of the lens holder. can include

In embodiments, the second module may include a moving frame movable in a direction perpendicular to the optical axis direction together with the image sensor; a fixed frame in which a moving frame is accommodated; And it may include a plurality of second ball members disposed between the moving frame and the fixed frame.

In embodiments, the first extension line may pass through at least one of the plurality of second ball members.

In embodiments, the housing includes a first accommodating part having a space in which the extension part is accommodated, and the fixing frame includes: a seating part in which the housing is seated and an opening through which light passes; a second accommodating portion on which the first accommodating portion is seated; and a stepped portion disposed between the seating portion and the second accommodating portion.

In embodiments, at least some of the first accommodating portions may be disposed to face the stepped portions in the first direction.

In embodiments, at least some of the extensions may be disposed to face each other in a direction perpendicular to the optical axis direction and the stepped portion with the first accommodating portion interposed therebetween.

In embodiments, the second module may further include a sensor substrate including a movable part coupled to the movable frame and supporting the image sensor, a fixed part coupled to the fixed frame, and a connection part connecting the movable part and the fixed part. there is.

In embodiments, the second driving unit may include a second driving coil disposed on one of a moving frame and a fixed frame; a second drive magnet facing the second drive coil; and a second position sensor capable of detecting the position of the second driving magnet.

In embodiments, the second driving unit may include a third driving coil disposed such that an angle between the second driving coil and the second driving coil is a right angle; a third drive magnet facing the third drive coil; and a third position sensor capable of detecting the position of the third driving magnet.

In embodiments, a lens unit including one or more lenses disposed along an optical axis direction; a lens holder that supports the lens unit and is movable in an optical axis direction; a first housing having an inner space in which a lens holder is accommodated; a second housing that is coupled to the first housing and accommodates an optical member into which light passing through the lens unit is incident; and a plurality of ball members disposed between the lens holder and the first housing to form a first column and a second column parallel to an optical axis direction, wherein the ball members constituting the first column and the second column The ball members constituting a row are arranged asymmetrically with each other, and at least a portion of the first housing is provided with a camera module disposed to face the second housing in a direction perpendicular to the optical axis direction.

In embodiments, the ball members constituting the first row include a plurality of first main balls and one or more first sub balls disposed between the plurality of first main balls, and the diameter of the first main ball is the first sub ball. It can be larger than the diameter of the ball.

In embodiments, the ball members constituting the second row include one or more second main balls and one or more second sub balls, the first main balls being disposed on the outermost sides of the first row, respectively, and the second sub balls. has a smaller diameter than the diameter of the second main ball, and may be disposed on the outermost side of the second row.

In embodiments, the number of ball members constituting the first row and the number of ball members constituting the second row may be different from each other.

In embodiments, the camera module may further include a case covering an upper portion of the first housing, and the case may include a protrusion protruding in a direction toward the plurality of ball members.

In embodiments, the camera module may include a first driving unit for moving the lens holder in an optical axis direction; and a second driving unit for moving the optical member in a direction perpendicular to the optical axis direction, the first driving unit may be disposed in the inner space of the first housing, and the second driving unit may be disposed outside the first housing.

In embodiments, the lens holder may include a body portion supporting a lens portion; and an extension portion protruding from the body portion in the optical axis direction, and the first housing may include a first accommodating portion disposed to face the second housing in a direction perpendicular to the optical axis direction and accommodating the extension portion.

In embodiments, the first accommodating part may protrude from the lower surface of the first housing in the optical axis direction.

In embodiments, the second housing may include a seating portion in which the first housing is seated and having an opening through which light passes; a second accommodating portion on which the first accommodating portion is seated; and a stepped portion extending in the optical axis direction and connecting the seating portion and the second accommodating portion.

In embodiments, the camera module may further include a movable frame disposed to be movable with respect to the second housing together with the optical member, and at least a portion of the movable frame may face the stepped portion in a direction perpendicular to the optical axis direction.

According to embodiments, a camera module having a sufficient space for securing a driving force and not increasing an overall height may be implemented through a lens holder having a portion extending in an optical axis direction and a housing structure capable of accommodating the lens holder.

1 is a perspective view of a camera module.
2 is a reference diagram for explaining the coupling of a first module and a second module included in a camera module.
3 is an exploded perspective view of the first module.
4 is an exploded perspective view of the first module.
5 is a side view of a lens holder and a housing included in a first module.
6 is a cross-sectional view of part II-II' of FIG. 2 .
FIG. 7 is an exemplary cross-sectional view taken along line III-III′ of FIG. 2 .
FIG. 8 is an exemplary cross-sectional view along the line III-III′ of FIG. 2 .
9 is a view for explaining a guide groove according to other embodiments.
10 shows an exemplary shape of an extension of a lens holder according to other embodiments.
11 is an exploded perspective view of the second module.
12 is a perspective view of a fixed frame included in a second module.
13 is an exploded bottom perspective view of a fixing frame included in a second module.
14 is a perspective view for explaining a wiring pattern, a support pad, and a yoke part disposed inside the fixing frame.
15 is an exploded perspective view of a moving frame included in a second module.
16 is a plan view of a sensor substrate included in a second module.
17 is an exemplary layout view of a second driving unit included in a second module.
18 is an exploded perspective view of a second module according to other embodiments.
FIG. 19 is a cross-sectional view along line II′ of FIG. 1 .
FIG. 20 is an enlarged view of the dotted line portion of FIG. 19 .

Prior to the detailed description of the present invention, the terms or words used in this specification and claims should not be construed as being limited to the usual or dictionary meaning, and the inventors use the term to describe their invention in the best way. Based on the principle that it can be properly defined as the concept of, it should be interpreted as meaning and concept consistent with the technical idea of the present invention. Therefore, the embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention, and do not represent all of the technical ideas of the present invention, so various equivalents that can replace them at the time of the present application. It should be understood that there may be water and variations.

The same reference number or numeral in each drawing attached to this specification indicates parts or components that perform substantially the same function. For convenience of description and understanding, the same reference numerals or symbols may be used in different embodiments. That is, even if components having the same reference numerals are shown in a plurality of drawings, the plurality of drawings do not all mean one embodiment.

In the following description, singular expressions include plural expressions unless the context clearly dictates otherwise. The terms "comprise" or "comprise" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features or numbers, It should be understood that the presence or addition of steps, operations, components, parts, or combinations thereof is not precluded.

In addition, in the following description, expressions such as upper, upper, lower, lower, side, front, rear, etc. are expressed based on the direction shown in the drawing, and if the direction of the object is changed, it is stated in advance that it may be expressed differently. .

Also, in the present specification and claims, terms including ordinal numbers such as “first” and “second” may be used to distinguish between elements. These ordinal numbers are used to distinguish the same or similar components from each other, and the meaning of the term should not be limitedly interpreted due to the use of these ordinal numbers. For example, elements combined with such ordinal numbers should not be construed as limiting the use order or arrangement order by the number. If necessary, each ordinal number may be used interchangeably.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, the spirit of the present invention is not limited to the presented examples. For example, a person skilled in the art who understands the spirit of the present invention may suggest other embodiments included within the scope of the spirit of the present invention through the addition, change, or deletion of components, but this is also the scope of the present invention. It will be said that it is included within the scope of thought. The shapes and sizes of elements in the drawings may be exaggerated for clarity.

1 is a perspective view of a camera module 1 . 2 is a reference diagram for explaining the coupling of the first module 10 and the second module 20 included in the camera module.

The camera module 1 according to the embodiments may be mounted on a portable electronic device. The portable electronic device may be a portable electronic device such as a mobile communication terminal, a smart phone, or a tablet PC.

Referring to FIGS. 1 and 2 , a camera module 1 according to embodiments may include a first module 10 capable of moving a lens unit 30 . In addition, the camera module 1 may further include a second module 20 capable of moving the image sensor S. For example, the first module 10 may be an actuator module for focus adjustment, and the second module 20 may be an actuator module for shake correction.

The lens unit 30 includes at least one lens L and a lens barrel 31 . At least one lens is disposed inside the lens barrel 31 . When a plurality of lenses (L) are provided, the plurality of lenses (L) are mounted inside the lens barrel 31 along the optical axis (O).

In embodiments, the lens unit 30 may be moved in an optical axis direction (Z axis direction) during auto focus adjustment (AF). To this end, the camera module 1 according to the embodiments includes a first module 10 capable of moving the lens unit 30 .

The lens unit 30 is moved in the optical axis direction (Z-axis direction) by the first module 10 to adjust the focus. Meanwhile, the lens unit 30 may be fixed so as not to move while the shake correction function is being performed.

An optical member through which light passing through the lens unit can be incident may be disposed behind the first module 10 . For example, the camera module may include the lens unit 30 , the first module 10 , and an optical member disposed outside the first module 10 .

Here, the optical member may be an additional lens module, a reflective module, or an image sensor S, or an optical module in which they are combined. For example, the optical member disposed behind the first module 10 may be an image sensor S capable of relative movement with respect to the lens unit 30 .

The camera module 1 according to the embodiments may perform OIS by moving the image sensor S instead of the lens unit 30 . Since the relatively light image sensor S is moved, the image sensor S can be moved with a smaller driving force. Therefore, shake correction can be performed more precisely.

To this end, the camera module 1 according to the embodiments includes a second module 20 .

The image sensor S may be moved in a direction perpendicular to the optical axis O by the second module 20 or rotated about the optical axis O as a rotational axis to compensate for shaking. That is, the image sensor S may be moved in a direction perpendicular to the direction in which the imaging surface of the image sensor S is directed by the second module 20 .

In this specification, the direction in which the imaging surface of the image sensor S faces may be referred to as an optical axis direction (Z-axis direction). That is, the image sensor S may move in a direction perpendicular to the optical axis direction (Z-axis direction).

In the drawings of this specification, moving the image sensor S in a direction parallel to the imaging plane may be understood as moving the image sensor S in a direction perpendicular to the optical axis direction (Z-axis direction).

In addition, moving the image sensor S in the first direction (Y-axis direction) or the second direction (X-axis direction) means that the image sensor S moves in a direction perpendicular to the optical axis direction (Z-axis direction). can be understood

Also, for convenience, it has been described that the image sensor S is rotated around the optical axis O as a rotational axis, but when the image sensor S is rotated, the rotational axis may not coincide with the optical axis O. For example, the image sensor S may be rotated about an axis perpendicular to a direction in which an imaging surface of the image sensor S faces as a rotation axis.

In addition, the first direction (Y direction) and the second direction (X-axis direction) are examples of two directions that are perpendicular to the optical axis direction (Z-axis direction) and cross each other, and in the present specification, the first direction (Y-axis direction) and The second direction (X-axis direction) may be understood as two directions that are perpendicular to the optical axis O and cross each other.

3 and 4 are exploded perspective views of the first module. 5 is a side view of a lens holder and a housing included in a first module. 6 is a cross-sectional view of part II′ of FIG. 2 . Since the lens unit and the first module described in FIGS. 3 to 6 correspond to the lens unit and the first module previously described in FIGS. 1 and 2 , overlapping descriptions may be omitted.

The first module 10 includes a lens holder 200 supporting the lens barrel 31 , a housing 100 and a first driving unit 300 , and may further include a case 500 .

A hollow formed through the lens holder 200 in an optical axis direction (eg, a Z-axis direction) may be disposed. The lens barrel 31 may be inserted into the hollow part and fixed to the lens holder 200 . Accordingly, the lens barrel 31 and the lens holder 200 may move together in the direction of the optical axis O.

The housing 100 has an inner space in which the lens holder 200 can be accommodated, and may have an open top and bottom shape.

For example, the housing 100 may be configured such that an upper portion of the housing 100 is open while a portion of the lower surface 110 is open in the optical axis direction, and the light passing through the lens unit 30 is opened in the lower surface 110. It can go out of the housing 100 through the space.

The case 500 may be combined with the housing 100 to cover the upper portion of the housing 100 and protect the internal components of the first module 10 .

Case 500 may be provided with a protrusion 510 protruding toward the first ball member 400 to be described later. The protrusion 510 may serve as a stopper and a buffer member for regulating the movement range of the first ball member 400 .

The first driver 300 may generate a driving force in the optical axis direction (Z-axis direction) to move the lens holder 200 in the optical axis direction (Z-axis direction).

The first driving unit 300 includes a first driving magnet 320 and a first driving coil 310 that electromagnetically interact with each other to generate a driving force. The first driving magnet 320 and the first driving coil 310 may be disposed to face each other in a direction (eg, a Y-axis direction) perpendicular to an optical axis direction (Z-axis direction).

The first driving magnet 320 is disposed on the lens holder 200 . For example, the first driving magnet 320 may be disposed on one side of the lens holder 200 .

One side of the lens holder 200 may protrude more in the optical axis direction (Z-axis direction) than other parts of the lens holder 200 . For example, the lens holder 200 may include a body portion 210 on which the lens barrel 31 is supported, and an extension portion 220 protruding from the body portion 210 in an optical axis direction (Z-axis direction).

The first driving magnet 320 may be disposed on the extension part 220 . Accordingly, while securing an installation space for the first driving unit 300 to secure a driving force, the height of the first module 10 may be configured to be slim by reducing the height of other parts of the lens holder 200 .

A back yoke may be disposed between the lens holder 200 and the first driving magnet 320 . The back yoke can improve driving force by preventing leakage of magnetic flux of the first driving magnet 320 .

One surface of the first driving magnet 320 (eg, a surface facing the first driving coil 310) may be magnetized to have both an N pole and an S pole. For example, an N pole, a neutral region, and an S pole may be sequentially provided on one surface of the first driving magnet 320 facing the first driving coil 310 along the optical axis direction (Z axis direction).

The other surface (eg, the opposite surface of one surface) of the first driving magnet 320 may be magnetized to have a polarity opposite to that of one surface. For example, an S pole, a neutral region, and an N pole may be sequentially provided on the other surface of the first driving magnet 320 along the optical axis direction (Z-axis direction).

The first driving coil 310 is disposed to face the first driving magnet 320 . For example, the first driving coil 310 may be disposed to face the first driving magnet 320 in a first direction perpendicular to the optical axis O (Y-axis direction).

The first driving coil 310 is disposed on a substrate 350, and the substrate 350 has a housing (so that the first driving magnet 320 and the first driving coil 310 face each other in a direction perpendicular to the optical axis O). 100) can be installed.

The first driving magnet 320 is a moving member that is mounted on the lens holder 200 and moves in the optical axis direction (Z-axis direction) together with the lens holder 200, and the first driving coil 310 is attached to the substrate 350. It may be a fixed fixing member.

When power is applied to the first drive coil 310, the lens holder 200 can be moved in the optical axis direction (Z-axis direction) by the electromagnetic force between the first drive magnet 320 and the first drive coil 310. there is. As the lens holder 200 moves, the lens barrel 31 disposed in the lens holder 200 may also move in the optical axis direction (Z axis direction).

The first driving unit 300 may further include a first yoke unit 340 generating a supporting force for supporting the lens holder 200 to the housing 100 . For example, the first driving unit 300 further includes a first yoke unit 340 facing the first driving magnet 320 in a first direction (Y-axis direction) with the first driving coil 310 interposed therebetween. can include However, components other than the first driving coil 310 may be further disposed between the first driving magnet 320 and the first yoke part 340 .

The first yoke part 340 may be disposed at a position facing the first driving magnet 320 . For example, the first driving coil 310 may be disposed on one surface of the substrate 350 and the first yoke part 340 may be disposed on the other surface of the substrate 350 .

The first yoke part 340 may be a magnetic material to which the magnetic force of the first driving magnet 320 acts. For example, since the first yoke part 340 includes a metal material, magnetic attraction may be generated between the first driving magnet 320 and the first yoke part 340 .

The lens holder 200 may be supported by the housing 100 in the first direction (Y-axis direction) by the magnetic force generated between the first yoke part 340 and the first driving magnet 320 .

Meanwhile, the first yoke part 340 may also perform a role of concentrating the lines of magnetic force generated from the first driving magnet 320 to pass through the first driving coil 310 intensively.

However, the arrangement of the first driving unit 300 according to the embodiments is not limited to the above. For example, the first driving magnet included in the first driving unit 300 may be disposed on the housing 100 and the first driving coil may be disposed on the extension part 220 of the lens holder 200 . In this case, the first yoke may be disposed between the first driving coil and the lens holder 200 .

As one part of the lens holder 200 protrudes further in the optical axis direction (Z-axis direction), correspondingly, one side of the housing 100 is more protruded in the optical axis direction (Z-axis direction) than the other part of the housing 100. It may have a protruding shape. For example, the housing 100 has a lower surface 110 opposing the body portion 210 of the lens holder 200 in the optical axis direction (Z-axis direction) and the lower surface 110 in the optical axis direction (Z-axis direction). It may include a first accommodating portion 120 protruding into.

An accommodating space RS may be formed in the first accommodating part 120 , and the extension part 220 of the lens holder 200 may be accommodated in the accommodating space RS.

Since the first accommodating portion 120 protrudes more downward in the optical axis direction (Z-axis direction) than the lower surface 110 of the housing 100, the lower surface 110 and the first accommodating portion 120 have a stepped structure. can form Accordingly, while securing an installation space for the first driving unit 300 to secure driving force, the height of the first module 10 can be configured to be slim by reducing the height of other parts of the housing 100 . Here, 'protruding downward' may mean protruding in a traveling direction of light passing through the lens unit.

A first ball member 400 may be disposed between the lens holder 200 and the housing 100 . For example, the first ball member 400 may be disposed in the extension 220 of the lens holder 200 and the guide grooves 131 , 132 , 231 , and 232 of the housing 100 . The first ball member 400 includes a plurality of balls disposed along the optical axis direction (Z-axis direction). The plurality of balls may roll in the optical axis direction (Z-axis direction) or rotate in place when the lens holder 200 is moved in the optical axis direction (Z-axis direction).

The first ball member 400 may come into contact with the lens holder 200 and the housing 100 due to magnetic force between the first driving magnet 320 and the first yoke part 340 .

The guide grooves 131 , 132 , 231 , and 232 may be respectively disposed on surfaces of the lens holder 200 and the housing 100 facing each other. For example, the extension part 220 of the lens holder 200 is provided with a first guide groove 231 and a second guide groove 232, and the housing 100 has a third guide groove 131 and a fourth guide groove. (132) may be provided. The first guide groove 231 and the second guide groove 232 may be disposed to face the third guide groove 131 and the fourth guide groove 132 , respectively.

The guide grooves 131, 132, 231, and 232 may have a shape of a groove extending in an optical axis direction (Z-axis direction). The first ball member 400 may be disposed between the first guide groove 231 and the third guide groove 131 or/and between the second guide groove 232 and the fourth guide groove 132 .

The first ball member 400 may be arranged to form a plurality of columns having a direction parallel to the optical axis direction (Z-axis direction). For example, at least some of the balls of the first ball member 400 are aligned along the optical axis The first ball group BG1 may be formed by being arranged in a direction parallel to the direction (Z-axis direction). The balls of the first ball group BG1 may form a first row. In addition, at least some balls of the first ball member 400 may be spaced apart from the first ball group BG1 and arranged in a direction parallel to the optical axis direction (Z-axis direction) to form a second ball group BG2. The balls BG2 of the second ball group may form a second row.

In the ball groups BG1 and BG2 forming two parallel rows, the ball members forming the first row and the ball members forming the second row may be asymmetrically arranged. This ball arrangement will be described later in detail with reference to FIGS. 7 to 9 .

Continuing to refer to FIGS. 3 and 4 , each of the ball groups BG1 and BG2 may be disposed in different guide grooves. For example, the first ball group BG1 may be disposed in the first guide groove 231 and the second ball group BG2 may be disposed in the second guide groove 232 .

When an impact is applied to the first module 10, a phenomenon in which the shape of the part in contact with the first ball member 400 in the guide grooves 131, 132, 231, 232 is deformed (so-called dent phenomenon) occurs There is a risk of becoming For example, the external impact is concentrated on the narrow contact surface between the first ball member 400 and the guide grooves 131, 132, 231, 232, so that the guide grooves 131, 132, 231, 232 are dented. may occur. When a dent phenomenon occurs, there is a fear that the relative position between the lens holder 200 and the housing 100 may be changed, which makes precise position control of the lens holder 200 difficult.

In order to prevent such a dent phenomenon, the first module 10 may further include a reinforcing member disposed in at least one of the guide grooves 131 , 132 , 231 , and 232 .

The reinforcing member may have a shape corresponding to the shape of the guide grooves 131 , 132 , 231 , and 232 . For example, when the guide grooves 131, 132, 231, and 232 have the shape of a V-shaped groove extending in the optical axis direction (Z-axis direction), the reinforcing member of the guide grooves 131, 132, 231, and 232 It can be provided as a V-shaped member that fits snugly on the inclined surface.

The reinforcing member may include a material having higher rigidity than a material constituting at least a part of the housing 100 or the lens holder 200 . For example, when the guide grooves 131, 132, 231, and 232 of the housing 100 or the lens holder 200 are formed of a plastic material, the reinforcing member is a material having higher rigidity than plastic (eg, non-conductive metal material).

The reinforcing member may be provided as a separate part and coupled to the guide grooves 131, 132, 231, and 232. For example, the reinforcing member may be adhered to the guide grooves 131, 132, 231, and 232 using an adhesive. Alternatively, the guide grooves 131, 132, 231, and 232 and the reinforcing member may be integrally formed by insert-injecting the reinforcing member in the process of manufacturing the housing 100 or the lens holder 200.

As the reinforcing member is disposed in the guide grooves 131, 132, 231, and 232, resistance to impact of the guide grooves 131, 132, 231, and 232 may be increased.

Meanwhile, the first module 10 may detect the position of the lens holder 200 in the optical axis direction (Z-axis direction). For this purpose, a first position sensor 330 may be disposed. The first position sensor 330 may be disposed on the substrate 350 to face the first driving magnet 320 . For example, the first position sensor 330 may be a Hall sensor.

Hereinafter, with reference to FIGS. 7 to 10 , the arrangement structure of the first driving unit and the first ball member included in the first module 10 will be described in detail.

7 and 8 are exemplary cross-sectional views taken along line II-II′ of FIG. 2 . 9 is a view for explaining a guide groove according to other embodiments. 10 shows an exemplary shape of an extension of a lens holder according to other embodiments.

Since the first module 10 and its components described in FIGS. 7 and 8 correspond to the first module 10 and its components previously described in FIGS. 1 to 6 , overlapping descriptions will be omitted.

The first module 10 may include a plurality of first ball members 400 disposed between the lens holder 200 and the housing 100 .

The first module 10 according to embodiments may form a size (eg, diameter) of some of the plurality of balls of the first ball member 400 smaller than the size (eg, diameter) of the remaining balls. . In this case, larger balls among the plurality of balls may be intentionally brought into contact with the lens holder 200 and the housing 100 .

For example, referring to FIG. 7 , some of the plurality of balls forming the first ball group BG1 may be relatively large balls BG1A, and others may be relatively small balls BG1B. ) can be. In the following description, a relatively large ball is defined as a 'main ball' and a relatively small ball is defined as a 'sub ball'.

Between the lens holder 200 and the housing 100, the large diameter main balls BG1A and BG2A contact the lens holder 200, and the small diameter sub balls BG1B and BG2B contact the lens holder 200. may not come into contact. That is, the lens holder 200 may come into contact with the main balls BG1A and BG2A and be supported on the inner wall of the housing. In this case, the sub balls BG1B and BG2B maintain a distance between the main balls BG1A and BG2A, prevent the main balls BG1A and BG2A from leaving their places, and the lens holder 200 is installed in the housing ( 100) can play a role of assisting being supported.

The first ball group BG1 may include a plurality of first main balls BG1A and a first sub ball BG1B disposed therebetween.

The second ball group BG2 may include one or more second main balls BG2A and second sub balls BG2B disposed side by side with the second main ball BG2A in the optical axis direction.

Referring to FIG. 7 , the distance between the two first main balls BG1A in the first ball group BG1 may be greater than the distance between the two second main balls BG2A in the second ball group BG2. there is.

For example, in the first ball group BG1 forming the first column, the two first main balls BG1A may be disposed on the outermost sides of the first column, respectively. In addition, in the second ball group BG2 forming the second row, a second sub ball BG2B is disposed on the outermost side of one side of the second row, and a second main ball BG2A is disposed on the outermost side of the other side of the second row. In the meantime, another second main ball BG2A may be placed.

The lens holder may come into contact with the main balls BG1A and BG2A and be supported by the housing. In this case, when the centers of the main balls BG1A and BG2A supporting the lens holder (this is defined as a contact point) are interconnected, a virtual area having a predetermined area may be formed. This virtual area is defined as a 'support area'. For example, in FIG. 7 , the support area may be formed in the shape of a trapezoid having a line connecting the center of the first ball group BG1 as a long side and a line connecting the center of the second ball group BG2 as a short side. .

In embodiments, the point of action of the magnetic force applied between the first drive magnet 320 and the first yoke part 340 (hereinafter, defined as 'support center point') may be configured to be located inside the support area. .

As the center of support is located inside the support area, the first driving magnet 320 and the lens holder 200 can be stably supported on the inner wall of the housing by the main balls BG1A and BG2A. Accordingly, the lens holder 200 may move in parallel to the optical axis direction (Z-axis direction) as much as possible without tilting with respect to the housing 100 .

Meanwhile, as the lens holder 200 moves in the optical axis direction, the first driving magnet 320 also moves in the optical axis direction, and there is a possibility that the support center point may deviate from the support area. To prevent this, the support center point can be configured to be biased to one side of the support area.

For example, referring to FIG. 7 , the first yoke part 340 may further include a protrusion part 341 protruding toward the first driving magnet 320 . Like other parts of the first yoke part 340 , the protrusion 341 may be formed of a conductive material to which the magnetic force of the first driving magnet can act. For example, the protrusion 341 may be a part of the first yoke part 340 integrally formed. As the protrusion 341 is additionally disposed in the first yoke part 340, the center point of the magnetic attraction acting between the first drive magnet 320 and the first yoke part 340 (ie, the center point of support) is the protrusion part. (341) may be formed biased toward the disposed side.

In embodiments, the protrusion 341 of the first yoke portion 340 may be disposed closer to the first ball group BG1 than to the second ball group BG2. Referring to FIG. 7 , the first main balls BG1A of the first ball group BG1 may be disposed at relatively wider intervals than the second main balls BG2A of the second ball group BG2. In this case, the support area may be formed in a trapezoidal shape with a long side disposed on a side corresponding to the position of the first ball group BG1.

Since the support center point is positioned close to the long side of the trapezoidal rim by the protrusion 341 of the first yoke portion 340, even if the support center point moves a long distance, it may not deviate from the trapezoidal rim. Accordingly, while the lens holder 200 moves a long distance in the optical axis direction, it can move in parallel to the optical axis direction (Z-axis direction) as much as possible without being tilted with respect to the housing 100 .

In the first module 10, the length of the first guide groove 231 serving as a main guide and the length of the second guide groove 232 serving as an auxiliary guide may be formed to be different from each other. Hereinafter, lens holders having guide grooves of different lengths will be described with reference to FIGS. 9 and 10 .

9 is a view for explaining a guide groove according to other embodiments. 10 shows an exemplary shape of an extension of a lens holder according to other embodiments.

In embodiments, the lengths of the first guide groove 231 and the second guide groove 232 may be different from each other. For example, referring to FIGS. 9 and 10 , the length of the first guide groove 231 in the optical axis direction (Z-axis direction) is greater than the length of the second guide groove 232 in the optical axis direction (Z-axis direction). can be long

The first guide groove 231 may protrude in the optical axis direction (Z-axis direction) from the lower surface of the lens holder 200 . For example, one part of the extension part 220 of the lens holder 200 may protrude further down the optical axis direction (eg, in the negative Z-axis direction) compared to other parts, and the protruding part may have a first guide. A groove 231 may be disposed.

For example, of the extension part 220 of the lens holder 200, the portion where the first guide groove 231 is disposed is lower in the optical axis direction than the portion where the second guide groove 232 is disposed (in the negative direction of the Z axis). ) can be further protruded. Accordingly, the length of the first guide groove 231 may be longer than the length of the second guide groove 232 .

In addition, the length of the third guide groove (eg, 131 in FIG. 4 ) facing the first guide groove 231 is the fourth guide groove (eg, 131 in FIG. 4 ) facing the second guide groove 232 . 132) of the length.

The length of the second guide groove 232 in the optical axis direction (Z-axis direction) may be substantially the same as the length of the body portion 210 of the lens holder 200 in the optical axis direction (Z-axis direction). However, the specific shape of the second guide groove 232 is not limited thereto. For example, the length of the second guide groove 232 in the optical axis direction (Z-axis direction) is longer than the length of the body portion 210 in the optical axis direction (Z-axis direction), and the optical axis direction of the first guide groove 231 It may be shorter than the length of (Z-axis direction).

In embodiments, the number of balls of the first ball group BG1 accommodated in the first guide groove 231 and the number of balls of the second ball group BG2 accommodated in the second guide groove 232 may be different from each other. can

For example, referring to FIG. 9 , the first ball group BG1 may include three balls BG1A and BG1B, and the second ball group BG2 may include two balls BG2A. there is. Here, the two balls BG2A of the second ball group BG2 may have the same diameter. For example, the two balls BG2A of the second ball group BG2 both have a first diameter. In the first ball group BG1, the two balls BG1A disposed at the outermost in the optical axis direction (Z-axis direction) have the same diameter, and the balls BG1B disposed between them are disposed at the outermost may be smaller in diameter than the For example, in the second ball group BG1, two balls BG1A disposed at the outermost part in the optical axis direction (Z-axis direction) have a second diameter, and one ball BG1B disposed therebetween has a second diameter. It has 3 diameters, and the second diameter may be larger than the third diameter. Also, the first diameter and the second diameter may be the same. Here, the fact that the diameters are the same may mean not only physically the same case, but also include errors in manufacturing.

In the case of the ball arrangement as above, even if the second guide groove 232 is formed shorter than the first guide groove 231, it is possible to secure the support area A having a sufficient width. Accordingly, the lens holder 200 having a slimmer and lighter weight can be implemented.

On the other hand, as the lens holder 200 and the first driving magnet 320 move in the optical axis direction (Z-axis direction), the support center point CP deviates from the support area A and the lens holder 200 is tilted. there is

To prevent this, the support center point CP of the lens holder 200 may be disposed closer to the first guide groove 231 having a relatively longer length than the second guide groove 232 .

For example, referring to FIG. 9 , as the protrusion 341 is disposed on the first yoke part 340, the support center point CP formed by the first driving magnet 320 and the first yoke part 340 ) may be formed by being biased toward the side where the protrusion 341 is disposed. Accordingly, the support center point CP may be located closer to the first guide groove 231 than to the second guide groove 232 .

Alternatively, regardless of the structure of the first yoke part 340 described above, the support center point CP is set higher than the second guide groove 232 by using the arrangement position of the first driving magnet 320 . ) can be placed closer to

For example, as shown in FIG. 10 , with respect to the center 201 of one side of the lens holder 200, the first driving magnet 320 extends in the longitudinal direction of the first driving magnet 320 (eg, X-axis direction) may be disposed biased to one side.

The center 201 of one side of the lens holder 200 and the center 321 of the first driving magnet 320 may be misaligned. The direction in which the first driving magnet 320 is eccentric may be toward the first guide groove 231 . That is, the first driving magnet 320 may be disposed closer to the first guide groove 231 than to the second guide groove 232 .

Since the support area (A) is formed longer in the optical axis direction (Z-axis direction) as it is closer to the first guide groove 231, by disposing the first driving magnet 320 closer to the first guide groove 231 It is possible to more stably position the support center point CP within the support area A.

Meanwhile, in the first module described with reference to FIGS. 9 and 10 , all features other than those described above may be applied to the features of the first module described in FIGS. 7 and 8 .

Hereinafter, the second module 20 included in the camera module will be described in detail with reference to FIGS. 11 to 17 .

11 is an exploded perspective view of the second module 20. 12 is a perspective view of a fixed frame included in the second module 20 . 13 is an exploded bottom perspective view of the fixing frame included in the second module 20 . 14 is a perspective view for explaining a wiring pattern, a support pad, and a yoke part disposed inside the fixing frame. 15 is an exploded perspective view of a moving frame included in the second module 20 . 16 is a plan view of the sensor substrate included in the second module 20. 17 is an exemplary layout view of the second driving unit included in the second module 20 .

Since the camera module 10 described in FIGS. 11 to 17 includes all of the features of the camera module 10 described above with reference to FIGS. 1 to 10 , overlapping descriptions may be omitted.

The second module 20 is an image sensor S into which light passing through a lens unit (eg, 30 in FIG. 2 ) supported by the first module (eg, 10 of FIGS. 2 to 10 ) is incident can include The second module 20 may perform a hand shake correction function by moving the image sensor S in a direction different from an optical axis direction (eg, a Z-axis direction).

The second module 20 includes a fixed frame 1000, a moving frame 2000, a first driving unit 3000, and a sensor substrate 4000, and may further include a base 5000.

The fixed frame 1000 may be combined with the first module 10 . For example, the fixed frame 1000 may be coupled to the housing 100 of the first module 10 . The housing 100 of the first module 10 may be seated and coupled to the upper surface of the fixing frame 1000 .

Since the extension part 220 of the lens holder 200 and the first accommodating part 120 of the housing 200 protrude in the optical axis direction (Z-axis direction), the extension part 220 and the first accommodating part In order to secure an installation space for the 120, an escape area may be provided in the fixed frame 1000.

For example, as shown in FIGS. 11 and 12, the second accommodating part 1110 is disposed on one side of the fixing frame 1000, and the fixing frame 1000 is moved to the housing by the second accommodating part 1110. It may have an accommodation space in which the first accommodating part 120 of (200) can be disposed.

The second accommodating part 1110 may be positioned further down in the optical axis direction than other parts of the fixing frame 1000 . For example, the second accommodating part 1110 may be positioned further down in the optical axis direction than the seating part 1210 on which the lower surface 110 of the housing 100 is seated in the fixing frame 1000 . That is, the distance between the second accommodating part 1110 and the base 5000 in the optical axis direction may be shorter than the distance between the seating part 1210 and the base 5000 in the optical axis direction. In this structure, a stepped portion 1120 may be formed between the second accommodating portion 1110 and the seating portion 1210 .

The extension part 220 of the lens holder 200 and the first accommodating part 120 of the housing 200 are formed in a direction perpendicular to the stepped part 1120 and the optical axis direction (Z-axis direction) (eg, the Y-axis direction). ) can be encountered.

Installation spaces for the extension part 220 of the lens holder 200 and the first accommodation part 120 of the housing 200 may be secured by the second accommodating part 1110 . Therefore, even if the extension part 220 of the lens holder 200 and the first accommodating part 120 of the housing 200 protrude in the optical axis direction (Z-axis direction), the protruding part is the fixing frame 1000. As a result, the height of the entire camera module 1 can be kept slim.

The fixed frame 1000 may be a fixed member that does not move during focus adjustment and shake correction. The moving frame 2000 may be a moving member that moves during shake correction.

The moving frame 2000 may be accommodated in the fixed frame 1000 . The fixed frame 1000 has a sidewall extending downward in the optical axis direction (Z-axis direction), and thus the fixed frame 1000 may have an accommodation space for accommodating the movable frame 2000 .

In the second module 20, the fixed frame 1000 may be a housing providing an internal space in which the moving frame 2000, the first driving unit 3000, and the sensor substrate 4000 are accommodated. To be distinguished from the housing 100 of the first module 10, in the following description, the housing 100 of the first module 10 is referred to as the first housing, and the fixing frame 1000 of the second module 20 is It may be referred to as a second housing.

The moving frame 2000 may be moved relative to the fixed frame 1000 in a direction perpendicular to the optical axis direction (Z-axis direction) or may be rotated with respect to the optical axis direction (Z-axis direction) as a rotation axis.

For example, the moving frame 2000 is configured to be movable in a first direction (Y-axis direction) and a second direction (X-axis direction), and can be rotated around a rotation axis parallel to an optical axis direction (Z-axis direction).

Here, the first direction (Y-axis direction) may mean a direction perpendicular to the optical axis direction (Z-axis direction), and the second direction (X-axis direction) is the optical axis direction (Z-axis direction) and the first direction ( Y-axis direction) may mean directions perpendicular to both.

The fixed frame 1000 and the movable frame 2000 may each have an opening penetrating in an optical axis direction (Z-axis direction), and light passing through the lens unit 30 is incident to the image sensor S through the opening. It can be.

An optical filter F may be disposed on an upper surface of the moving frame 2000 . For example, the optical filter may be an infrared cut filter. A first mounting groove 2400 in which an optical filter F is mounted may be provided on an upper surface of the moving frame 2000 . A sensor substrate 4000 may be mounted on a lower surface of the moving frame 2000 .

A second ball member 3500 may be disposed between the fixed frame 1000 and the movable frame 2000 .

The second ball member 3500 may be disposed to contact the fixed frame 1000 and the movable frame 2000, respectively.

When the movable frame 2000 is relatively moved or rotated with respect to the fixed frame 1000, the second ball member 3500 rolls between the fixed frame 1000 and the movable frame 2000 to move the movable frame 2000. can support the movement of

As the second ball member 3500 is disposed, the moving frame 2000 is easily moved in the first direction (Y-axis direction) and the second direction (X-axis direction) while maintaining a predetermined distance from the fixed frame 1000. can be moved

Meanwhile, since the movable frame 2000 is accommodated in the fixed frame 1000, in order to reduce the height of the second module 20 in the direction of the optical axis (Z-axis direction), it is necessary to reduce the thickness of the movable frame 2000. . However, when the thickness of the movable frame 2000 is reduced, the rigidity of the movable frame 2000 is weakened, and thus reliability against external impact may deteriorate.

Therefore, in order to reinforce the rigidity of the moving frame 2000, the moving frame 2000 may be provided with a reinforcing plate 2300. The reinforcing plate 2300 may be formed of a material having higher rigidity than the material constituting the moving frame 2000 . For example, the reinforcing plate 2300 may be made of stainless material.

For example, referring to FIG. 15 , the reinforcing plate 2300 may be integrally coupled to the moving frame 2000 by insert injection. In this case, the reinforcing plate 2300 may be manufactured to be integrated with the moving frame 2000 by injecting a resin material into the mold while the reinforcing plate 2300 is fixed in the mold.

The reinforcing plate 2300 may be disposed inside the moving frame 2000 . A portion of the reinforcing plate 2300 may be exposed to the outside of the moving frame 2000 . In this way, while integrally forming the reinforcing plate 2300 inside the moving frame 2000, by exposing a part of the reinforcing plate 2300 to the outside of the moving frame 2000, the reinforcing plate 2300 and the moving frame ( 2000 can be improved, and the reinforcing plate 2300 can be prevented from being separated from the moving frame 2000 .

An image sensor S is mounted on the sensor substrate 4000 . A part of the sensor substrate 4000 may be coupled to the movable frame 2000, and another part of the sensor substrate 4000 may be coupled to the fixed frame 1000.

An image sensor (S) is mounted on a part of the sensor substrate 4000 coupled to the moving frame 2000.

Since a part of the sensor substrate 4000 is coupled to the movable frame 2000, as the movable frame 2000 is moved or rotated, a part of the sensor substrate 4000 may also be moved or rotated together with the movable frame 2000. That is, since a part of the sensor substrate 4000 is coupled to the moving frame 2000 and the image sensor S is disposed on the sensor substrate 4000, eventually, as the moving frame 2000 moves, the image sensor S It can also be moved or rotated.

Accordingly, the image sensor S may be moved or rotated in a plane perpendicular to the optical axis direction (Z-axis direction) to compensate for shaking during photographing.

The second driver 3000 generates a driving force in a direction perpendicular to the optical axis direction (Z-axis direction) to move the moving frame 2000 in a direction perpendicular to the optical axis direction (Z-axis direction) or in the optical axis direction (Z-axis direction). ) can be rotated using the rotation axis.

The second driving unit 3000 includes a first sub driving unit and a second sub driving unit. The first sub-driver may generate driving force in a second direction (X-axis direction), and the second sub-driver may generate driving force in a first direction (Y-axis direction).

The first sub driver may include a second driving magnet 3210 and a second driving coil 3110 . The second driving magnet 3210 and the second driving coil 3110 may be disposed to face each other in an optical axis direction (Z axis direction).

The second driving magnet 3210 may be arranged to be fixed to the moving frame 2000 . The second driving magnet 3210 may include a plurality of magnets. For example, the second driving magnet 3210 may include a set of magnets spaced apart from each other in a direction (Y-axis direction) perpendicular to the direction (X-axis direction) of the driving force generated by the second driving magnet 3210. there is. The second driving magnet 3210 may include a plurality of sets of magnets, and each set may include at least two magnets.

It is also possible to use one magnet having a long shape in the first direction (Y-axis direction), but if it has a shape that is too long in one direction, there may be a risk of breakage during manufacture. Accordingly, reliability during manufacturing may be improved by arranging a plurality of magnets spaced apart along the longitudinal direction as a set.

A second mounting groove 2200 in which a second driving magnet 3210 is disposed may be disposed on an upper surface of the moving frame 2000 . By inserting and disposing the second driving magnet 3210 into the second mounting groove 2200, the overall height of the second module 20 and the camera module 1 is prevented from increasing due to the thickness of the second driving magnet 3210. can do.

One surface of the second driving magnet 3210 (eg, a surface facing the second driving coil 3110) may be magnetized to have both an N pole and an S pole. For example, an N pole, a neutral region, and an S pole may be sequentially provided on one surface of the second driving magnet 3210 facing the second driving coil 3110 along the second direction (X-axis direction). Also, the other surface (eg, the surface opposite to one surface) of the second driving magnet 3210 may be magnetized to have a polarity opposite to that of the other surface. For example, an S pole, a neutral region, and an N pole may be sequentially provided on the other surface of the second driving magnet 3210 along the second direction (X-axis direction).

All magnetization directions of polarities of one set of magnets included in the second driving magnet 3210 may be the same.

The second driving coil 3110 is disposed to face the second driving magnet 3210 . For example, the second driving coil 3110 may be disposed to face the second driving magnet 3210 in the optical axis direction (Z-axis direction).

The second drive coil 3110 may have a donut shape having a hollow shape, and at least a portion may have a shape extending in the first direction (Y-axis direction). The second drive coil 3110 may include a smaller number of coils than the number of magnets included in the second drive magnet 3210 . For example, the second driving coil 3110 may include two coils spaced apart from each other in a direction in which driving force is generated (second direction (X-axis direction)), and each coil is of the second driving magnet 3210. It can be arranged facing each set of magnets.

The second driving magnet 3210 is a moving member mounted on the moving frame 2000 and moving together with the moving frame 2000, and the second driving coil 3110 may be a fixed member fixed to the fixed frame 1000. .

When power is applied to the second drive coil 3110, the moving frame 2000 is moved in the second direction (X-axis direction) by the electromagnetic force between the second drive magnet 3210 and the second drive coil 3110. A driving force may be generated.

The second sub driver includes a third driving magnet 3220 and a third driving coil 3120 . The third driving magnet 3220 and the third driving coil 3120 may be disposed to face each other in an optical axis direction (Z axis direction).

The third driving magnet 3220 is disposed on the moving frame 2000 . The third driving magnet 3220 may include a plurality of magnets. For example, the third driving magnet 3220 may include two magnets, and the two magnets may be spaced apart from each other along the second direction (X-axis direction). For example, the third driving magnet 3220 may include two magnets spaced apart from each other in a direction perpendicular to a direction in which a driving force is generated by the third driving magnet 3220 (a first direction (Y-axis direction)). .

A second mounting groove 2200 in which a third driving magnet 3220 is disposed may be provided on an upper surface of the moving frame 2000 . By inserting and disposing the third driving magnet 3220 into the second mounting groove 2200, the overall height of the second module 20 and the camera module 1 is prevented from increasing due to the thickness of the third driving magnet 3220. can do.

One surface of the third driving magnet 3220 (eg, a surface facing the third driving coil 3120) may be magnetized to have both an S pole and an N pole. For example, an S pole, a neutral region, and an N pole may be sequentially provided on one surface of the third driving magnet 3220 facing the third driving coil 3120 along the first direction (Y-axis direction). The other surface (eg, a surface opposite to one surface) of the third driving magnet 3220 may be magnetized to have a polarity opposite to that of the other surface. For example, an N pole, a neutral region, and an S pole may be sequentially provided on the other surface of the third driving magnet 3220 along the first direction (Y-axis direction).

The magnetization directions of the two magnets of the third drive magnet 3220 may be opposite to each other.

The third driving coil 3120 is disposed to face the third driving magnet 3220 . For example, the third driving coil 3120 may be disposed to face the third driving magnet 3220 in the optical axis direction (Z-axis direction).

The third drive coil 3120 may have a donut shape having a hollow shape, and may have a shape in which at least a portion extends in the second direction (X-axis direction). The third driving coil 3120 may include a number of coils corresponding to the number of magnets included in the third driving magnet 3220 .

The third driving magnet 3220 is a moving member mounted on the moving frame 2000 and moving together with the moving frame 2000, and the third driving coil 3120 may be a fixed member fixed to the fixed frame 1000. .

When power is applied to the third driving coil 3120, the moving frame 2000 is moved in the first direction (Y-axis direction) by the electromagnetic force between the third driving magnet 3220 and the third driving coil 3120. A driving force may be generated.

Meanwhile, the driving force generated by the first sub-driver and the second sub-driver may be combined to rotate the moving frame 2000 . For example, by controlling the driving force of the first sub-driver and the driving force of the second sub-driver, a rotational force centered on a rotational axis parallel to the optical axis may be generated, and thus the moving frame 2000 may be rotated.

The second driving magnet 3210 and the third driving magnet 3220 are disposed perpendicular to each other in a plane perpendicular to the optical axis direction (Z-axis direction), and the second driving coil 3110 and the third driving coil 3120 are also They are arranged perpendicular to each other in a plane perpendicular to the optical axis direction (Z-axis direction). That is, the angle between the second drive magnet 3210 and the third drive magnet 3220 may be approximately 90 degrees, and the angle between the second drive coil 3110 and the third drive coil 3120 may be approximately 90 degrees.

A second ball member 3500 is disposed between the fixed frame 1000 and the moving frame 2000 . The second ball member 3500 includes a plurality of balls disposed between the fixed frame 1000 and the moving frame 2000 .

The second ball member 3500 is disposed to contact the fixed frame 1000 and the moving frame 2000, respectively. The second ball member 3500 serves to guide the movement of the moving frame 2000 in the shake correction process. In addition, it also functions to maintain a distance between the fixed frame 1000 and the moving frame 2000.

The second ball member 3500 rolls in the first direction (Y-axis direction) when a driving force is generated in the first direction (Y-axis direction). Accordingly, the second ball member 3500 guides the movement of the moving frame 2000 in the first direction (Y-axis direction).

In addition, the second ball member 3500 rolls in the second direction (X-axis direction) when a driving force is generated in the second direction (X-axis direction). Accordingly, the second ball member 3500 guides the movement of the moving frame 2000 in the second direction (X-axis direction).

At least one of the surfaces of the fixed frame 1000 and the moving frame 2000 facing each other in the optical axis direction (Z-axis direction) is provided with guide grooves 1220 and 2100 in which the second ball member 3500 is disposed. A plurality of guide grooves 1220 and 2100 may be provided to correspond to the plurality of balls of the second ball member 3500 .

For example, a fifth guide groove 1220 may be disposed on the lower surface of the fixed frame 1000, and a sixth guide groove 2100 may be disposed on the upper surface of the moving frame 2000.

The second ball member 3500 may be disposed in the fifth guide groove 1220 and the sixth guide groove 2100 and inserted between the fixed frame 1000 and the moving frame 2000 .

Each of the fifth guide groove 1220 and the sixth guide groove 2100 may have a polygonal or circular planar shape. The size of the fifth guide groove 1220 and the sixth guide groove 2100 may be larger than the diameter of the second ball member 3500 . For example, cross sections of the fifth guide groove 1220 and the sixth guide groove 2100 on a plane perpendicular to the optical axis direction (Z-axis direction) may have a size larger than the diameter of the second ball member 3500 . A specific shape of the fifth guide groove 1220 and the sixth guide groove 2100 is not limited as long as its size is greater than the diameter of the second ball member 3500. Accordingly, the second ball member 3500 may roll in a direction perpendicular to the optical axis direction (Z-axis direction) while being accommodated in the fifth guide groove 1220 and the sixth guide groove 2100 .

Meanwhile, a portion of the reinforcing plate 2300 may be exposed to the outside through the upper surface of the moving frame 2000 . The reinforcing plate 2300 exposed to the outside may form the bottom surface of the sixth guide groove 2100 . Accordingly, the second ball member 3500 may roll in contact with the reinforcing plate 2300 .

The second module 20 may include position sensors 3310 and 3320 capable of detecting a position in a direction perpendicular to the optical axis direction (Z-axis direction) of the moving frame 2000 .

To this end, a second position sensor 3310 and a third position sensor 3320 are provided. The second position sensor 3310 is disposed on the fixed frame 1000 to face the second driving magnet 3210, and the third position sensor 3320 is disposed on the fixed frame 1000 to face the third driving magnet 3220. is placed on The second position sensor 3310 and the third position sensor 3320 may be hall sensors.

Here, the third position sensor 3320 may include two hall sensors. For example, the third driving magnets 3220 are spaced apart in a direction (first direction (Y-axis direction)) perpendicular to a direction (second direction (X-axis direction)) in which driving force is generated by the third driving magnet 3220. Two magnets are disposed, and the third position sensor 3320 includes two Hall sensors disposed facing the two magnets.

It is possible to detect whether the moving frame 2000 is rotated through two hall sensors facing the third driving magnet 3220 .

Meanwhile, a difference is generated between the driving force of the first sub-driver and the driving force of the second sub-driver, the resultant force of the first and second sub-drivers is used, or two magnets and two magnets included in the second sub-driver are used. Rotational force may be intentionally generated in a manner such as using a coil.

Since the fifth guide groove 1220 and the sixth guide groove 2100 have a polygonal or circular shape that is larger than the diameter of the second ball member 3500, the fifth guide groove 1220 and the sixth guide groove 2100 ) The second ball member 3500 disposed between the two is capable of rolling without limitation in a direction perpendicular to the optical axis direction (Z-axis direction).

Accordingly, the moving frame 2000 may be rotated based on the Z axis while being supported by the second ball member 3500 .

In addition, when rotation is not required and linear movement is required, the driving force of the first sub-driver and/or the driving force of the second sub-driver may be controlled to cancel unintentionally generated rotational force.

13 and 14, the fixed frame 1000 has a wiring pattern 1300 therein, and the wiring pattern 1300 can be connected to the second driving coil 3110 and the third driving coil 3120. there is. Also, the wiring pattern 1300 of the fixed frame 1000 may be connected to the sensor substrate 4000. Accordingly, the second driving coil 3110 and the third driving coil 3120 may receive power through the wiring pattern 1300 disposed on the fixed frame 1000 .

That is, the camera module 1 has a wiring pattern 1300 on the fixing frame 1000 itself without a separate printed circuit board for supplying power to the second driving unit 3000 so as to provide power to the second driving unit 3000. It can be configured to supply.

The wiring pattern 1300 may be integrally coupled to the fixed frame 1000 by insert injection molding. For example, the wiring pattern 1300 may be integrated with the fixing frame 1000 by injecting a resin material into the mold while the wiring pattern 1300 is disposed in the mold.

The camera module 1 according to the embodiments may undergo injection molding at least twice in the process of manufacturing the fixing frame 1000 .

When the pattern width of the wiring pattern 1300 is minimized to reduce the size, since the rigidity of the wiring pattern 1300 is not sufficient, it may be difficult to fix the position of the wiring pattern 1300 during insert injection molding. Therefore, a first injection-molded product integrated with the wiring pattern 1300 (eg, the first frame 1200) is manufactured by insert injection, and then the first injection-molded product is insert-injected to form a second injection-molded product integrated with the first injection-molded product ( For example, the fixed frame 1000 having the wiring pattern 1300 therein may be manufactured by manufacturing the second frame 1100 .

The wiring pattern 1300 includes a wiring part 1310 and a terminal part 1320, the wiring part 1310 is located inside the first frame 1200, and the terminal part 1320 is located outside the first frame 1200. arranged so as to be exposed to Also, the terminal unit 1320 is disposed to be exposed to the outside of the second frame 1100 . Since the terminal 1320 of the wiring pattern 1300 is connected to the sensor substrate 4000, power can be applied to the second driving coil 3110 and the third driving coil 3120 through the wiring pattern 1300.

Meanwhile, a fifth guide groove 1220 in which the second ball member 3500 is disposed is formed in the first frame 1200 . Since the material of the second ball member 3500 may be ceramic and the material of the first frame 1200 is plastic, the fifth guide groove 1220 may be damaged due to a difference in stiffness.

Therefore, in order to prevent the fifth guide groove 1220 from being damaged, a support pad 1200 is disposed on the bottom surface of the fifth guide groove 1220, and the support pad 1200 is attached to the wiring pattern 1300 in the first injection process. ), it may be insert-injected and integrated with the first frame 1200. The support pad 1200 may be made of stainless material.

One part of the support pad 1200 may be disposed inside the first frame 1200 and another part of the support pad 1200 may be disposed to be exposed to the outside of the first frame 1200 .

The support pad 1200 exposed to the outside of the first frame 1200 may form a bottom surface of the fifth guide groove 1220 . Accordingly, the second ball member 3500 may roll while contacting the support pad 1200 .

A second yoke part 3400 is disposed inside the fixing frame 1000 . The second yoke part 3400 provides magnetic force so that the fixed frame 1000 and the moving frame 2000 can maintain contact with the second ball member 3500 .

The second yoke part 3400 may be integrated with the first frame 1200 by being insert-injected in the same way as the wiring pattern 1300 in the first injection molding process.

The second yoke part 3400 is disposed to face the second driving magnet 3210 and the third driving magnet 3220 in the optical axis direction (Z axis direction). The second yoke part 3400 includes a plurality of yokes. For example, the yoke unit may include two yokes facing the two magnets included in the third driving magnet 3220 and two yokes facing the two sets of magnets of the first magnet.

The number of second yoke parts 3400 is not particularly limited, but the center of action of the magnetic attraction acting between the second driving magnet 3210 and the third driving magnet 3220 and the second yoke part 3400 is the first It may be provided to be located in a support area in which a plurality of balls included in the two-ball member 3500 are connected to each other.

An attractive force acts between the second yoke part 3400 and the second driving magnet 3210 and between the second yoke part 3400 and the third driving magnet 3220 in the direction of the optical axis (Z-axis direction), respectively.

Therefore, since the movable frame 2000 is pressed in a direction toward the fixed frame 1000, the fixed frame 1000 and the movable frame 2000 can maintain contact with the second ball member 3500.

The second yoke part 3400 may be made of a material capable of generating magnetic attraction between the second driving magnet 3210 and the third driving magnet 3220 . For example, the second yoke part 3400 is provided as a magnetic material.

Meanwhile, the fixed frame 1000 may further include a shield can 1400 . The shield can 1400 may cover at least a portion of the top surface and side surface of the second frame 1100, which is a secondary injection molding product. The shield can 1400 may serve to shield electromagnetic waves.

Referring to FIG. 16 , a sensor substrate 4000 may include a moving part 4100, a fixed part 4200, and a connecting part 4300. The sensor substrate 4000 may be an RF PCB.

An image sensor (S) is mounted on the moving unit 4100 . The moving unit 4100 is coupled to the lower surface of the moving frame 2000. For example, the area of the moving part 4100 is larger than the area of the image sensor S, and the outer part of the moving part 4100 of the image sensor S may be coupled to the lower surface of the moving frame 2000.

The moving unit 4100 is a moving member that moves along with the moving frame 2000 during shake correction. The moving unit 4100 may be a rigid PCB.

The fixing part 4200 is coupled to the lower surface of the fixing frame 1000 . The fixing part 4200 is a fixing member that does not move during shake correction. The fixing part 4200 may be a rigid circuit board (Rigid PCB).

The connection unit 4300 is disposed between the moving unit 4100 and the fixed unit 4200, and may connect the moving unit 4100 and the fixed unit 4200. The connection unit 4300 may be a flexible printed circuit board (PCB). When the moving unit 4100 is moved, at least a portion of the connecting unit 4300 disposed between the moving unit 4100 and the fixed unit 4200 may be bent.

The connection part 4300 extends along the circumference of the moving part 4100 . The connection part 4300 is provided with a plurality of slits penetrating the connection part 4300 in the optical axis direction. A plurality of slits are disposed at intervals between the moving part 4100 and the fixed part 4200 . Accordingly, the connecting portion 4300 may include a plurality of bridge elements 4330 spaced apart by a plurality of slits. A plurality of bridge elements 4330 extend along the circumference of the moving unit 4100 .

The connection part 4300 includes a first support part 4310 and a second support part 4320 . The connection part 4300 is connected to the fixing part 4200 through the first support part 4310 . And, the connection part 4300 is connected to the moving part 4100 through the second support part 4320 .

For example, the first support part 4310 is contact-connected with the fixed part 4200 and spaced apart from the moving part 4100 . Also, the second support part 4320 is connected to the moving part 4100 and is spaced apart from the fixed part 4200 .

For example, the first support part 4310 may extend in the second direction (X-axis direction) to connect the plurality of bridge elements 4330 of the connecting part 4300 and the fixing part 4200 . In one embodiment, the first support part 4310 may include two support parts disposed opposite to each other in the second direction (X-axis direction).

The second support part 4320 may extend in the first direction (Y-axis direction) to connect the plurality of bridge elements 4330 of the connection part 4300 and the moving part 4100 . In one embodiment, the second support part 4320 may include two support parts disposed opposite to each other in the first direction (Y-axis direction).

Accordingly, the moving unit 4100 may be moved in a direction perpendicular to the optical axis direction (Z-axis direction) or rotated based on the optical axis direction (Z-axis direction) while being supported by the connection unit 4300 .

In one embodiment, when the image sensor S is moved in the first direction (Y-axis direction), the plurality of bridge elements 4330 connected to the first support part 4310 may be bent. Also, when the image sensor S is moved in the second direction (Y-axis direction), the plurality of bridge elements 4330 connected to the second support part 4320 may be bent. Also, when the image sensor S is rotated, the plurality of bridge elements 4330 connected to the first support part 4310 and the plurality of bridge elements 4330 connected to the second support part 4320 may be bent together.

In embodiments, a length of the fixing part 4200 in the first direction (Y-axis direction) and a length in the second direction (X-axis direction) may be different. For example, the length of the fixing part 4200 in the second direction (X-axis direction) may be shorter than the length in the first direction (Y-axis direction).

In embodiments, the sensor substrate 4000 may have a rectangular shape as a whole. In this type of sensor substrate 4000, when the length of the first support part 4310 and the length of the second support part 4320 are the same, the applied to the plurality of bridge elements 4330 connected to the first support part 4310 The load being carried differs from the load of the plurality of bridge elements 4330 connected to the second support part 4320, and thus, driving control may be difficult.

Therefore, by making the length of the first support part 4310 and the length of the second support part 4320 different, the plurality of bridge elements 4330 extending from the first support part 4310 in the first direction (Y-axis direction) The length of the plurality of bridge elements 4330 extending from the second support part 4320 in the second direction (X-axis direction) may be substantially the same. Here, the length of the first support part 4310 may mean the length in the first direction (Y-axis direction), and the length of the second support part 4320 means the length in the second direction (X-axis direction). can do.

A driver IC (C3) for driving control of the second driver 3000 may be disposed on the sensor substrate 4000. The driver IC (C3) is disposed on the connection board (C2), and the connection board (C2) can be connected to the fixing part 4200 by a flexible circuit board (Flexible PCB, C4).

The driver IC (C3) may be fixed to the upper surface of the fixing frame 1000 (eg, the upper surface of the shield can 1400). That is, since the flexible printed circuit board (C4) can be bent, the connection board (C2) on which the driver IC (C3) is disposed can be disposed on the upper surface of the fixed frame (1000). Therefore, since there is no need to secure a separate installation space, the overall size of the camera module 1 can be reduced.

In addition, a first connector C1 to be connected to an external power source (eg, a portable electronic device in which the camera module 1 is mounted) may be extended and disposed at the fixing part 4200 of the sensor substrate 4000 .

A base 5000 may be coupled to a lower portion of the sensor substrate 4000 . The base 5000 may be coupled to the sensor substrate 4000 to cover a lower portion of the sensor substrate 4000 . The base 5000 may play a role of preventing external foreign substances from entering through a gap between the moving part 4100 and the fixed part 4200 of the sensor substrate 4000 .

A heat dissipation film 5100 may be disposed under the base 5000 , and the heat dissipation film 5100 may cover the lower portion of the base 5000 and the side surface of the second module 20 . For example, the heat dissipation film 5100 may cover the lower surface of the base 5000, and may further cover at least one of the side surface of the sensor substrate 4000 and the side surface of the fixing frame 1000, if necessary. Therefore, heat generated from the image sensor S can be effectively dissipated.

Meanwhile, in the second module 20, the positions where the driving coils 3110 and 3120 and the driving magnets 3210 and 3220 are disposed are not limited to those described above. For example, as shown in FIG. 18 , the driving magnets 3210 and 3220 may be disposed on a fixed body, and the driving coils 3110 and 3120 may be disposed on a moving body.

18 is an exploded perspective view of a second module 20' according to other embodiments. Referring to FIG. 18 , a second driving magnet 3210 and a third driving magnet 3220 are disposed on a fixed frame 1000, and a second driving coil is disposed on a movable frame 2000 movable relative to the fixed frame 1000. 3110 and a third driving coil 3120 may be disposed.

The second driving magnet 3210 and the third driving magnet 3220 may be disposed to face the second driving coil 3110 and the third driving coil 3120 in an optical axis direction (Z axis direction), respectively.

Due to electromagnetic interaction between the driving magnets 3210 and 3220 and the driving coils 3110 and 3120, the moving frame 2000 may move relative to the fixed frame 1000. As the moving frame 2000 moves, the image sensor S connected to the moving frame 2000 may also move together.

Driving coils 3110 and 3120 may be disposed on an upper surface of the moving frame 2000 facing the fixed frame 1000 . Driving magnets 3210 and 3220 may be disposed on a surface of the fixed frame 1000 facing the movable frame 2000 .

As the driving coils 3110 and 3120 are disposed on the moving frame 2000, power may be supplied to the driving coils 3110 and 3120 through a wiring configuration connected to the image sensor S. Therefore, since it is not necessary to configure a separate wiring pattern in the fixed frame 1000, the wiring structure of the second module 20 can be configured more simply.

In the second module 20' described in FIG. 18, all features other than those described above can be applied to the features of the second module 20 described in FIGS. 11 to 17.

Hereinafter, the arrangement relationship between the first module 10 and the second module 20 will be described in detail with reference to FIGS. 19 and 20 . FIG. 19 is a cross-sectional view taken along line II′ of FIG. 1 . FIG. 20 is an enlarged view of the dotted line portion of FIG. 19 . The first module 10 and the second module 20 described in FIGS. 19 and 20 and the camera module 1 including them include the first module 10 and the second module previously described in FIGS. 1 to 18 Since it corresponds to (20 or 20') and the camera module 1 including them, redundant descriptions may be omitted.

The lens holder 200 has an extension part 220 protruding in the optical axis direction (Z-axis direction), and the housing 100 also has a first accommodating part 120 protruding in the optical axis direction (Z-axis direction). The extension part 220 is accommodated in the accommodating space RS of the first accommodating part 120, and the first accommodating part 120 is disposed in the second accommodating part 1110 of the fixing frame 1000.

Since the second accommodating part 1110 of the fixed frame 1000 has a stepped shape on the top surface of the fixed frame 1000 (that is, the seating part 1210), the second accommodating part 1110 disposed thereon has a stepped shape. 1 At least a portion of the accommodating portion 120 and at least a portion of the extension portion 220 disposed in the first accommodating portion 120 are lower than the seating portion 1210 of the fixing frame 1000 in the optical axis direction (Z-axis direction). can be located in

Accordingly, the extension part 220 of the lens holder 200 and the first accommodating part 120 of the housing 100 are formed in a first direction perpendicular to the optical axis direction (Z-axis direction) (eg, Y-axis direction). may overlap with the second module 20.

Here, that any two components 'overlap in the first direction' may mean that the two components may be disposed at overlapping positions when viewed in the first direction. For example, if the first member and the second member are disposed to overlap each other in the first direction, an imaginary line extending along the first direction will pass through both the first member and the second member.

19 and 20, from the end of the extension 220 in the optical axis direction (Z-axis direction) of the lens holder 200 in a first direction (Y-axis direction) perpendicular to the optical axis direction (Z-axis direction). An extended imaginary first extension line L1 may pass through the second module 20 . For example, the first extension line L1 may pass through any one of the stepped portion 1120 of the fixed frame 1000, the second ball member 3500, and the moving frame 2000. Alternatively, the first extension line L1 may be located further downward in the optical axis direction (Z-axis direction) than the seating portion 1210 of the fixing frame 1000 . Alternatively, the distance from the first extension line L1 to the image sensor S may be shorter than the distance from the contact point P between the second ball member 3500 and the fixed frame 1000 to the image sensor S.

A virtual second extension line extending from the end of the first accommodating portion 120 of the housing 100 in the optical axis direction (Z-axis direction) in a first direction (Y-axis direction) perpendicular to the optical axis direction (Z-axis direction) ( L2) may be formed below the first extension line L1 in the optical axis direction (Z-axis direction).

The second extension line L2 may pass through the second module 20 . For example, the second extension line L2 may pass through any one of the stepped portion 1120 of the fixed frame 1000 and the movable frame 2000 . In addition, the first extension line (L1) may be positioned lower in the optical axis direction (Z-axis direction) than the seating portion 1210 of the fixing frame 1000 and the second ball member 3500. That is, the lower surface of the first accommodating part 120 of the housing 100 may be located lower than the second ball member 3500 included in the second module 20 in the optical axis direction (Z-axis direction).

On the other hand, since the first ball member 400 is disposed between the extension part 220 and the first accommodating part 120, the optical axis direction (Z-axis direction) of the plurality of balls included in the first ball member 400 The center of the ball (eg, BG1A) disposed at the bottom may be located lower in the optical axis direction (Z-axis direction) than the upper surface (ie, seating portion 1210) of the fixed frame 1000.

For example, referring to FIG. 20, the ball BG1A disposed at the bottom in the optical axis direction (Z-axis direction) among the plurality of balls included in the first ball member 400 has at least a portion of the second ball member ( 3500) and the first direction (Y-axis direction) perpendicular to the optical axis direction (Z-axis direction).

In the camera module 1, a portion of the first module 10 and a portion of the second module 20 may be configured to overlap each other in a direction perpendicular to the optical axis direction (Z-axis direction), and thus the camera module 1 ), it is possible to improve the optical performance and driving performance of the camera module 1 without increasing the overall height.

In addition, the extension part 220 of the lens holder 200 is disposed in the escape space provided in the housing 200 (ie, the first accommodating part 120), and the first accommodating part 120 of the housing 200 is fixed. Since it can be disposed in the escape space (ie, the second accommodating part 1110) provided in the frame 1000, the extension part 220 of the lens holder 200 and the first accommodating part 120 of the housing 200 Even if it has a form protruding in the optical axis direction (Z-axis direction), it is possible to keep the height of the entire camera module 1 slim.

In addition, since the first accommodating part 120 protrudes more downward in the optical axis direction (Z-axis direction) than the lower surface 110 of the housing 100, the installation space of the first driving part 300 is reduced in order to secure driving force. While securing, the height of the first module 10 for the focus control function may be configured to be slim.

Meanwhile, in the camera module 1, the lens unit 30 is configured to move in the optical axis direction (Z-axis direction) during auto-focusing, and the image sensor S moves in the optical axis direction (Z-axis direction) during shake correction. It is configured to move in a direction perpendicular to. Therefore, even if the lens unit 30 is moved in the optical axis direction (Z-axis direction) during focus adjustment, the relative positions of the driving magnets and the driving coils of the second driving unit 3000 do not change, so that the driving force for shaking correction can be precisely adjusted. You can control it. In addition, even if the image sensor S is moved in a direction perpendicular to the optical axis direction (Z-axis direction) during shake correction, the relative position of the driving magnet and the driving coil of the first driving unit 300 does not change, so the driving force for adjusting the focus can be precisely controlled.

Although various embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and variations are possible within the scope without departing from the technical spirit of the present invention described in the claims. It will be obvious to those of average knowledge in the art. In addition, it may be implemented by deleting some components from the above-described embodiments, and each embodiment may be implemented in combination with each other.

1 ... camera module 10 ... first module
20... second module 30... lens unit
100 ... housing 120 ... first receiving part
200 ... lens holder 210 ... body part
220... extension part 300... first driving part
400 ... first ball member 500 ... case
1000... fixed frame 1100... second frame
1110... second accommodating portion 1120... stepped portion
1100... second frame 1210... seat
1400... shield can 2000... movement frame
3000... second driving unit 4000... sensor substrate
5000... base S... image sensor

Claims (29)

a lens unit including one or more lenses disposed along an optical axis direction;
an image sensor into which light passing through the lens unit is incident;
a first module including a first driver capable of moving the lens unit in the direction of the optical axis; and
A second module including a second driving unit capable of moving the image sensor in a direction perpendicular to the optical axis direction;
The first module is
a lens holder supporting the lens unit and at least partially overlapping the second module in a first direction perpendicular to the optical axis direction; and
A camera module including a housing in which the lens holder is accommodated. According to claim 1,
the lens holder
a body part to which the lens part is coupled; and
An extension portion protruding from the body portion in the direction of the optical axis,
A first imaginary extension line extending in the first direction from an end of the extension portion in the optical axis direction passes through the second module. According to claim 2,
The first driving unit
a first drive coil;
a first drive magnet facing the first drive coil; and
The camera module further includes a first position sensor capable of detecting a position of the first driving magnet. According to claim 3,
The first driving magnet is disposed in the extension part,
The first drive coil is fixed to the housing camera module. According to claim 3,
The first module further includes a plurality of first ball members disposed between the housing and the lens holder,
The plurality of first ball members
a first ball group in which a plurality of balls form a first column parallel to the optical axis direction; and
A camera module including a second ball group in which a plurality of balls form a second column parallel to the optical axis direction and spaced apart from the first column. According to claim 5,
The number of balls constituting the first ball group and the number of balls constituting the second ball group are different from each other. According to claim 5,
The first ball group includes a plurality of first main balls and one or more first sub balls disposed between the plurality of first main balls,
The camera module wherein the diameter of the first sub ball is smaller than the diameter of the first main ball. According to claim 7,
The second ball group includes a plurality of second main balls and one or more second sub balls,
The distance between the first main balls is greater than the distance between the second main balls camera module. According to claim 8,
The first module further includes a first yoke disposed spaced apart from the first driving magnet in the first direction,
The camera module wherein the point of application of the magnetic force received by the first yoke by the first driving magnet is disposed closer to the first ball group than to the second ball group. According to claim 5,
The housing or the lens holder
a first guide groove in which the first ball group is accommodated; and
It includes a second guide groove in which the second ball group is accommodated,
A length of the first guide groove in the optical axis direction is greater than or equal to a length of the second guide groove in the optical axis direction. According to claim 10,
Further comprising a reinforcing member disposed in at least one of the first guide groove and the second guide groove,
The camera module of claim 1 , wherein the reinforcing member includes a material having rigidity higher than rigidity of a material constituting at least a part of the lens holder. According to claim 2,
The second module is
a moving frame movable together with the image sensor in a direction perpendicular to the direction of the optical axis;
a fixed frame accommodating the moving frame; and
A camera module including a plurality of second ball members disposed between the moving frame and the fixed frame. According to claim 12,
The first extension line is a camera module passing through at least one of the plurality of second ball members. According to claim 12,
The housing includes a first accommodating portion having a space in which the extension portion is accommodated,
The fixed frame
a seating portion on which the housing is seated and having an opening through which the light passes;
a second accommodating portion in which the first accommodating portion is seated; and
A camera module comprising a stepped portion disposed between the seating portion and the second accommodating portion. According to claim 14,
At least a portion of the first accommodating portion is disposed to face the stepped portion in the first direction. According to claim 14,
At least a portion of the extension portion is disposed to face the step portion and a direction perpendicular to the optical axis direction with the first accommodating portion interposed therebetween. According to claim 12,
The second module is
The camera module further includes a sensor substrate including a movable part coupled to the movable frame and supporting the image sensor, a fixed part coupled to the fixed frame, and a connection part connecting the movable part and the fixed part. According to claim 12,
The second driving unit
a second drive coil disposed on one of the moving frame and the fixed frame;
a second drive magnet facing the second drive coil; and
A camera module including a second position sensor capable of detecting a position of the second driving magnet. According to claim 18,
The second driving unit
a third drive coil disposed such that an angle between the second drive coil and the second drive coil forms a right angle;
a third drive magnet facing the third drive coil; and
The camera module further includes a third position sensor capable of detecting a position of the third driving magnet. a lens unit including one or more lenses disposed along an optical axis direction;
a lens holder that supports the lens unit and is movable in the optical axis direction;
a first housing having an inner space in which the lens holder is accommodated;
a second housing coupled to the first housing and housing an optical member into which light passing through the lens unit is incident; and
It includes a plurality of ball members arranged to form a first column and a second column parallel to the optical axis direction between the lens holder and the first housing,
The ball members constituting the first row and the ball members constituting the second row are arranged asymmetrically with each other,
At least a portion of the first housing is disposed to face the second housing in a direction perpendicular to the optical axis direction. According to claim 20,
The ball members constituting the first row include a plurality of first main balls and one or more first sub balls disposed between the plurality of first main balls,
The camera module having a diameter of the first main ball larger than a diameter of the first sub ball. According to claim 21,
The ball members constituting the second row include one or more second main balls and one or more second sub balls,
The first main ball is disposed on the outermost sides of the first row, respectively,
The second sub-ball has a smaller diameter than the diameter of the second main ball, and is disposed on the outermost side of the second row. According to claim 20,
The number of ball members constituting the first row and the number of ball members constituting the second row are different from each other. According to claim 20,
Further comprising a case covering the upper portion of the first housing,
The camera module including a protrusion protruding in a direction toward the plurality of ball members. According to claim 20,
a first driving unit moving the lens holder in the direction of the optical axis; and
Further comprising a second driving unit for moving the optical member in a direction perpendicular to the optical axis direction,
The first driving unit is disposed in the inner space of the first housing,
The second driving unit is disposed outside the first housing, the camera module. According to claim 20,
the lens holder
a body portion supporting the lens portion; and
An extension portion protruding from the body portion in the direction of the optical axis,
The first housing is
A camera module including a first accommodating portion disposed to face the second housing in a direction perpendicular to the optical axis direction and accommodating the extension portion. 27. The method of claim 26,
The camera module of claim 1 , wherein the first accommodating part protrudes from the lower surface of the first housing in the direction of the optical axis. 27. The method of claim 26,
the second housing
a seating portion on which the first housing is seated and having an opening through which the light passes;
a second accommodating portion in which the first accommodating portion is seated; and
A camera module including a stepped portion extending in the direction of the optical axis and connecting the seating portion and the second accommodating portion. 29. The method of claim 28,
Further comprising a moving frame movably disposed with respect to the second housing together with the optical member,
At least a portion of the moving frame faces the stepped portion in a direction perpendicular to the optical axis direction.

Images