KR20180092251A - Camera module and portable electronic device including the same - Google Patents

Abstract

The present invention relates to a camera module and a portable electronic device having the same. The camera module comprises: a lens module having a plurality of lenses; and a reflection module arranged in front of the lens module, and changing a path of light incident to the inside to face the lens module. The reflection module includes a holder having a reflection member for changing the path of the light installed therein, and supported by a housing to be able to rotate around first and second axes. According to the present invention, the camera module can reduce a size and can minimize power consumption while having a simple structure and realizing an auto focusing (AF) function, a zoom function, an optical image stabilizer (OIS) function, etc.

Description

The present invention relates to a camera module and a portable electronic device including the camera module.

The present invention relates to a camera module and a portable electronic device including the camera module.

In recent years, cameras have been basically adopted for portable electronic devices such as smart phones, tablet PCs, and notebooks, and cameras for mobile terminals are provided with an auto focus function, an image stabilization function, and a zoom function.

However, in order to implement various functions, the structure of the camera module becomes complicated, and the size of the camera module increases. As a result, the size of the portable electronic device on which the camera module is mounted increases.

When the lens or the image sensor is directly moved for the purpose of image stabilization, both the weight of the lens or the image sensor itself and the weight of the other members to which the lens or the image sensor is attached must be considered. , There is a problem that power consumption is increased.

An object of an embodiment of the present invention is to provide a camera module and a portable electronic device including the camera module that are simple in structure and can be reduced in size while implementing functions such as auto focus adjustment, zooming, and correction of camera shake.

It is another object of the present invention to provide a camera module and a portable electronic device including the same that can minimize power consumption.

A camera module according to an embodiment of the present invention includes: a lens module having a plurality of lenses; And a reflection module disposed in front of the lens module and changing a path of the light so that the light incident into the lens module is directed toward the lens module, wherein the reflection module includes a reflection member for changing a path of the light, The holder may be supported on the housing such that the holder is rotatable with respect to the first axis and the second axis.

The camera module and the portable electronic device including the camera module according to an embodiment of the present invention can be simplified in structure and reduced in size while implementing functions such as auto focus adjustment, zooming, and camera shake correction. In addition, power consumption can be minimized.

1 is a perspective view of a portable electronic device according to an embodiment of the present invention,
2 is a perspective view of a camera module according to a first embodiment of the present invention,
3A and 3B are sectional views of a camera module according to a first embodiment of the present invention,
4 is an exploded perspective view of a camera module according to a first embodiment of the present invention,
5 is a perspective view of a housing of a camera module according to a first embodiment of the present invention,
6A and 6B are exploded perspective views of a rotating plate and a rotating holder of a camera module according to a first embodiment of the present invention,
7 is a perspective view of a lens holder of a camera module according to a first embodiment of the present invention,
8 is a perspective view of the camera module according to the first embodiment of the present invention,
9 is a perspective view illustrating a housing and a substrate coupled to each other in a camera module according to a first embodiment of the present invention,
10 is an exploded perspective view of a housing and a rotation holder in a camera module according to the first embodiment of the present invention,
FIGS. 11A to 11C are views schematically showing a rotation holder according to a first embodiment of the present invention rotated about a first axis,
FIGS. 12A to 12C are views schematically showing a rotation holder according to a first embodiment of the present invention rotated about a second axis,
13 is an exploded perspective view of a camera module according to a second embodiment of the present invention,
FIG. 14 is an exploded perspective view showing a coupling relation between the housing and the rotation holder of the camera module according to the second embodiment of the present invention, and FIG.
15A to 15C are views schematically showing a rotation holder according to a second embodiment of the present invention rotated about a first axis,
FIGS. 16A to 16C are views schematically showing a rotation holder according to a second embodiment of the present invention rotated about a second axis,
17 is an exploded perspective view of a camera module according to a third embodiment of the present invention,
18 is an exploded perspective view showing a coupling relation between a housing and a rotation holder of a camera module according to a third embodiment of the present invention,
19A to 19C are views schematically showing a rotation holder according to a third embodiment of the present invention rotated about a first axis,
20A to 20C are views schematically showing a rotation holder according to a third embodiment of the present invention rotated about a second axis,
21 is an exploded perspective view of a camera module according to a fourth embodiment of the present invention,
22 is an exploded perspective view showing a coupling relation between the housing and the rotation holder of the camera module according to the fourth embodiment of the present invention,
23 is an exploded perspective view of a camera module according to a fifth embodiment of the present invention,
24 is an exploded perspective view showing a coupling relationship between the housing and the rotation holder of the camera module according to the fifth embodiment of the present invention,
25 is a perspective view of a portable electronic device according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, the spirit of the present invention is not limited to the embodiments shown.

For example, those skilled in the art of the present invention will be able to suggest other embodiments included in the spirit of the present invention by adding, changing or deleting components, etc., Range. ≪ / RTI >

1 is a perspective view of a portable electronic device according to an embodiment of the present invention.

1, a portable electronic device 1 according to an exemplary embodiment of the present invention includes a mobile communication terminal, a smart phone, a tablet PC, and the like equipped with the camera modules 1000-1001, 1002, 1003, 1004, It may be a portable electronic device.

As shown in Fig. 1, a camera module 1000 is mounted on the portable electronic device 1 so that a subject can be photographed.

In this embodiment, the camera modules 1000-1001, 1002,1003, 1004, and 1005 include a plurality of lenses, and the optical axis (Z axis) of the lens is parallel to the thickness direction of the portable electronic device 1 It may be directed in a direction perpendicular to the front surface of the portable electronic device from the rear surface toward the rear surface or vice versa).

For example, the optical axis (Z-axis) of the plurality of lenses provided in the camera module 1000 may be formed in the width direction or longitudinal direction of the portable electronic device 1 (X-axis direction or Z-axis direction).

Accordingly, even if the camera module 1000 has functions such as auto focus (AF), zoom, and optical image stabilization (OIS), the thickness of the portable electronic device 1 increases . Thus, the portable electronic device 1 can be downsized.

The camera module 1000 according to an exemplary embodiment of the present invention may include at least one of AF, Zoom, and OIS functions.

The camera module 1000 having AF, Zoom, and OIS functions needs to have various components, so that the size of the camera module increases as compared with a general camera module.

As the size of the camera module 1000 increases, it may become a problem in downsizing the portable electronic device 1 on which the camera module 1000 is mounted.

For example, when a plurality of stacked lenses are formed in the thickness direction of the portable electronic device, the thickness of the portable electronic device increases according to the number of stacked lenses do. Accordingly, if the thickness of the portable electronic device is not increased, the number of the laminated lenses can not be sufficiently secured, and the zoom performance is weakened.

In order to implement the AF and OIS functions, an actuator for moving the lens group in the optical axis direction or in the direction perpendicular to the optical axis should be provided. In a case where the optical axis (Z axis) of the lens group is formed in the thickness direction of the portable electronic device The actuator for moving the lens group must be installed in the thickness direction of the portable electronic device. Therefore, the thickness of the portable electronic device is increased.

However, since the camera module 1000 according to the embodiment of the present invention is arranged such that the optical axis (Z-axis) of the plurality of lenses is perpendicular to the thickness direction of the portable electronic device 1, The portable electronic device 1 can be downsized even if the camera module 1000 is mounted.

FIG. 2 is a perspective view of a camera module according to a first embodiment of the present invention, and FIGS. 3a and 3b are sectional views of a camera module according to a first embodiment of the present invention.

The camera module 1001 according to the first embodiment of the present invention includes a reflection module 1100, a lens module 1200, and an image sensor module (not shown) provided in the housing 1010, 1300).

The reflection module 1100 is configured to change the traveling direction of the light. 3A) of the lid 1030 for covering the camera module 1001 from the upper side to the lens module 1200 through the reflection module 1100, Can be changed. For this purpose, the reflection module 1100 may include a reflection member 1110 for reflecting light.

The light incident through the opening 1031 is changed in the path toward the lens module 1200 by the reflection module 1100. For example, the light incident on the thickness direction (Y-axis direction) of the camera module 1001 is changed by the reflection module 1100 so that the light substantially coincides with the optical axis (Z-axis) direction.

The lens module 1200 includes a plurality of lenses through which light having a changed traveling direction is transmitted by the reflection module 1100. The image sensor module 1300 includes an image sensor 1300 that converts light passing through the plurality of lenses into an electric signal, And a printed circuit board 1320 on which the image sensor 1310 and the image sensor 1310 are mounted. The image sensor module 1300 may include an optical filter 1340 for filtering light incident on the lens module 1200. The optical filter 1340 may be an infrared cut filter.

A reflection module 1100 is provided in front of the lens module 1200 in the inner space of the housing 1010 and an image sensor module 1300 is provided in the rear of the lens module 1200.

2 to 10, a camera module 1001 according to the first embodiment of the present invention includes a reflection module 1100, a lens module 1200, and an image sensor module 1300 provided in a housing 1010, .

In the interior of the housing 1010, a reflection module 1100, a lens module 1200, and an image sensor module 1300 are sequentially provided from one side to the other side. Of course, the reflection module 1100, the lens module 1200, and the image sensor module 1300 are provided with an internal space to be interpolated. Here, the printed circuit board 1320 having the image sensor module 1300 is housed in the housing 1010 ). ≪ / RTI > For example, as shown in the figure, the housing 1010 may be integrally provided so that both the reflection module 1100 and the lens module 1200 are inserted into the internal space. However, the present invention is not limited thereto. For example, separate housings for interpolating the reflection module 1100 and the lens module 1200 may be mutually connected.

 The housing 1010 is covered with the lid 1030 so that the inner space is not visible.

The cover 1030 has an opening 1031 through which the light is incident and the light incident through the opening 1031 is changed in the traveling direction by the reflection module 1100 and is incident on the lens module 1200. The cover 1030 may be integrally provided to cover the whole of the housing 1010 or may be divided into separate members that cover the reflection module 1100 and the lens module 1200, respectively.

To this end, the reflection module 1100 includes a reflective member 1110 that reflects light. The light incident on the lens module 1200 passes through the plurality of lenses and is converted into an electric signal by the image sensor 1310 and is stored.

The housing 1010 includes a reflection module 1100 and a lens module 1200 in an inner space. The inner space of the housing 1010 can be distinguished from the space in which the reflection module 1100 is disposed and the space in which the lens module 1200 is disposed by the projection wall 1007. A reflective module 1100 may be provided on the front side of the protrusion wall 1007, and a lens module 1200 may be provided on the rear side of the protrusion wall 1007. The protruding wall 1007 may be formed to protrude from the side wall of the housing 1010 to the inner space.

The reflection module 1100 provided on the front side is rotated by the attraction of the pulling yoke 1153 provided on the inner wall surface of the housing 1010 and the pulling magnet 1151 provided on the rotation holder 1120, Is closely supported on the inner wall surface of the housing 1010. As shown in Fig. Although not shown in the drawing, a pulling magnet may be provided in the housing 1010 and a pulling yoke may be provided in the rotary folder 1120. The structure shown in the drawings will be described below for convenience of explanation.

A first ball bearing 1131, a rotating plate 1130 and a second ball bearing 1133 are provided between the inner wall surface of the housing 1010 and the rotation holder 1120. The first ball bearing 1131 and the second ball bearing 1130, The second ball bearing 1133 is in close contact with the seating grooves 1132, 1133, 1021 and 1121 while being partially inserted into the seating recesses 1132 and 1133. Therefore, when the rotation holder 1120 and the rotation plate 1130 are inserted into the inner space of the housing 1010, After the rotation holder 1120 is mounted on the housing 1010, the rotating holder 1120 is rotated by the attraction of the pulling yoke and the pulling magnet to the housing 1020, A slight space is left between the rotation holder 1120 and the protruding wall 1007 because it is in close contact with the inner wall surface of the protruding wall 1010.

Thus, in the present embodiment, a hook-shaped stopper 1050 can be provided to be fitted to the protruding wall 1007 while supporting the rotation holder 1120. (Of course, even if the stopper 1050 is not provided, the pulling magnet 1151 and the pulling- It can be fixed by the attraction force by the yoke 1153). The stopper 1050 is provided in a hook shape and can support the rotation holder 1120 in a state where the hook portion is hooked on the top of the projection wall 1007. The stopper 1050 may serve as a bracket for supporting the rotation holder 1120 when the reflection module 1100 is not driven and may further serve as a bracket for supporting the rotation holder 1120 when the reflection module 1100 is driven. As a stopper 1050 for adjusting the movement of the stopper 1050. The stopper 1050 may be provided on each of the projecting walls 1007 projecting from both sides. Of course, a space may be provided between the stopper 1050 and the rotation holder 1120 so that rotation of the rotation holder 1120 is smooth. Alternatively, the stopper 1050 may be made of an elastic material so that the rotation holder 1120 can move smoothly while being supported by the stopper 1050.

The housing 1010 includes a first driving unit 1140 and a second driving unit 1240 for driving the reflection module 1100 and the lens module 1200, respectively. The first driving unit 1140 includes a plurality of coils 1141b, 1143b and 1145b for driving the reflection module 1100 and the second driving unit 1240 includes a plurality of coils for driving the lens module 1200 1241b, and 1243b. The plurality of coils 1141b, 1143b, 1145b, and 1243b are mounted on the housing 1010 while being mounted on the main board 1070, 1016, 1017, 1018, 1019 may be provided to expose the inner space of the housing 1010. The through holes 1015, 1016, 1017, 1018,

Here, the main board 1070 on which the plurality of coils 1141b, 1143b, 1145b, 1241b, and 1243b are mounted may be integrally connected as shown in the figure. In this case, since one terminal is provided, it is easy to connect external power and signal. However, the present invention is not limited thereto. The main substrate 1070 may be formed of a plurality of substrates, for example, by separating a substrate on which a coil for a reflection module 1100 is mounted and a substrate on which a coil for a lens module 1200 is mounted It is possible.

The reflection module 1100 can change the path of the light incident through the opening 1031. [ In this case, the reflection module 1100 moves the rotation holder 1120 on which the reflection member 1110 is mounted to correct the camera shake or the like of the user . For example, when image shake or motion picture shake occurs due to user's hand shake or the like, relative displacement corresponding to shake is given to the rotation holder 1120 to compensate for the shake.

In this embodiment, since the OIS function is implemented by the movement of the rotation holder 1120 which does not include a lens or the like and is relatively light in weight, power consumption can be minimized.

That is, in this embodiment, the rotation holder 1120 provided with the reflection member 1110, without moving the lens barrel or the image sensor provided with a plurality of lenses, for realizing the OIS (Optical Image Stabilizer) So as to change the traveling direction of the light so that the light with the camera-shake or the like is made incident on the lens module 1200.

The reflection module 1100 includes a rotation holder 1020 supported on the housing 1010, a reflection member 1110 mounted on the rotation holder 1020, a first driving unit 1140 for moving the rotation holder 1120, .

The reflecting member 1110 can change the traveling direction of the light. For example, the reflective member 1110 may be a mirror or a prism that reflects light (for convenience of illustration, the reflective member 1110 is shown as a prism in the illustration of the first embodiment, do).

The reflection member 1110 is fixed to the rotation holder 1120. The rotation holder 1120 is provided with a mounting surface 1123 on which the reflection member 1110 is mounted.

The mounting surface 1123 of the rotation holder 1120 may be configured as an inclined surface so that the path of the light is changed. For example, the mounting surface 1123 may be an inclined surface inclined by 30 to 60 degrees with respect to the optical axis (Z-axis) of the plurality of lenses. The inclined surface of the rotation holder 1120 can be directed to the opening 1031 of the lid 1030 through which the light is incident.

The rotation holder 1120 on which the reflection member 1110 is mounted is movably accommodated in the inner space of the housing 1010. For example, the rotation holder 1120 can be rotatably received in the housing 1010 with respect to the first axis (X axis) and the second axis (Y axis). Here, the first axis (X axis) and the second axis (Y axis) may mean an axis perpendicular to the optical axis (Z axis), and the first axis (X axis) and the second axis It can be one axis.

The rotation holder 1120 includes a first ball bearing 1131 aligned along a first axis (X axis) and a second ball bearing 1132 aligned along a first axis (X axis) to facilitate rotational movement with reference to a first axis (X axis) And is supported on the housing 1010 by a second ball bearing 1133 aligned along the Y axis. In the drawing, for example, two first ball bearings 1131 aligned along a first axis (X axis) and two second ball bearings 1133 aligned along a second axis (Y axis) are disclosed. The first driving unit 1140 described below can rotate about the first axis (X axis) and the second axis (Y axis).

Here, unlike the second to fifth embodiments described below, the first embodiment is provided with the ball bearings that respectively take the first axis (X axis) and the second axis (Y axis) The two first ball bearings 1131 arranged along the first axis (Y axis) may be provided in a cylindrical shape extending in the first axis (X axis) and two second ball bearings 1133 May be provided in a cylindrical shape extending along the second axis (Y axis). In this case, the shape of the seating grooves 1132, 1133, 1021, and 1121 may also be provided in a semicircular shape corresponding to the shape of the first and second ball bearings (see FIG. 6B). 6B, two first and second ball bearings 1131 and 1133 are provided. However, the first ball bearing 1131 and the second ball bearing 1133 are provided on the first axis ) Or a second axis (Y axis) direction.

The first ball bearing 1131 and the second ball bearing 1133 are respectively provided on the front and rear surfaces of the rotating plate 1130 (or the first ball bearing 1131 and the second ball bearing 1133 are disposed on the opposite sides of the rotating plate 1130) The first ball bearing 1131 can be aligned with the second axis (Y axis), the second ball bearing 1133 can be aligned along the first axis (X axis), and the second ball bearing The rotation plate 1130 may be provided between the rotation holder 1120 and the inner surface of the housing 1010. [ The rotation holder 1120 is rotated by the attraction of the pulling magnet 1151 or the pulling yoke provided in the rotation holder 1120 and the pulling yoke 1153 or the pulling magnet provided in the housing 1010, The first ball bearing 1131 and the second ball bearing 1133 are also provided between the rotary holder 1120 and the housing 1010).

The first and second ball bearings 1131 and 1133 may be provided on the front and rear surfaces of the rotary plate 1130. The seating grooves 1132 and 1134 may be formed in the first and second ball bearings 1132 and 1134, And a second seating groove 1134 into which the second ball bearing 1133 is partially inserted.

A third seating groove 1021 may be formed in the housing 1010 to partially insert the first ball bearing 1131 and a fourth seating groove 1021 may be formed in the rotation holder 1120 to partially insert the second ball bearing 1133. [ (Not shown).

The first seating groove 1132, the second seating groove 1134, the third seating groove 1021 and the fourth seating groove 1121 described above are formed by the rotation of the first ball bearing 1131 and the second ball bearing 1133 (Of course, the depth of the groove may be smaller than the radius for ease of rotation of the first ball bearing 1131 and the second ball bearing 1133) The first ball bearing 1131 and the second ball bearing 1133 are not entirely immersed in the grooves and a part thereof is exposed to facilitate rotation of the turntable 1130 and the rotation holder 1120). The first seating groove 1132, the second seating groove 1134, the third seating groove 1021 and the fourth seating groove 1121 are formed by a first ball bearing (not shown) aligned along the first axis 1131 and the second ball bearing 1133 aligned along the second axis (Y axis).

Here, the first ball bearing 1131 and the second ball bearing 1133 are disposed in the first, second, and third seating grooves 1132, 1134, 1021, And can act as a bearing while moving or sliding.

The first ball bearing 1131 and the second ball bearing 1133 may be fixed to at least one of the housing 1010, the rotary plate 1130 and the rotary holder 1120. For example, the first ball bearing 1131 may be fixed to the housing 1010 or the rotation plate 1130, and the second ball bearing 1133 may be fixed to the rotation plate 1130 or the rotation holder 1120. In this case, the seating groove may be provided only in the member facing the first ball bearing 1131 or the second ball bearing 1133. In this case, the ball bearing may serve as a friction bearing by sliding movement, Can be performed.

When the first ball bearing 1131 and the second ball bearing 1133 are fixed to one of the housing 1010, the rotary plate 1130 and the rotary holder 1120, the first ball bearing 1131 and the second ball bearing 1130 The two-ball bearing 1133 may be provided in a spherical or hemispherical shape (of course, the hemispherical shape is an example, and may be provided to have a projection length larger than the hemisphere or smaller than the hemisphere). Of course, the same applies to the case where the ball bearings 1131 and 1133 are provided in the shape of a cylinder extending along the first axis (X axis) and the second axis (Y axis) as described above.

The first ball bearing 1131 and the second ball bearing 1133 may be attached to any one of the housing 1010, the rotating plate 1130 and the rotation holder 1120. Alternatively, the first ball bearing 1131 and the second ball bearing 1133 may be integrally formed at the time of manufacturing the housing 1010, the rotating plate 1130, and the rotating holder 1120.

The first driving unit 1140 generates a driving force such that the rotation holder 1120 can rotate about two axes.

For example, the first driving unit 1140 includes a plurality of coils 1141b, 1143b, and 1145b disposed to face a plurality of magnets 1141a, 1143a, and 1145a and a plurality of magnets 1141a, 1143a and 1145a.

When a power is applied to the plurality of coils 1141b, 1143b and 1145b, the plurality of magnets 1141a, 1143a and 1145a and the plurality of coils 1141b, 1143b and 1145b are electromagnetically influenced, 1143a and 1145a can be rotated with respect to the first axis (X axis) and the second axis (Y axis).

A plurality of magnets 1141a, 1143a, and 1145a are mounted on the rotation holder 1120. [ A portion 1141a of the plurality of magnets 1141a, 1143a and 1145a may be mounted on the lower surface of the rotation holder 1120 and the rest 1143a and 1145a may be mounted on the side surface of the rotation holder 1120 .

A plurality of coils 1141b, 1143b, and 1145b are mounted on the housing 1010. [ For example, the plurality of coils 1141b, 1143b, and 1145b may be mounted on the housing 1010 via the main board 1070. That is, the plurality of coils 1141b, 1143b, and 1145b are provided on the main board 1070, and the main board 1070 is mounted on the housing 1010. Here, in the drawing, the main substrate 1070 is an example in which the coils for the reflection module 1100 and the coils for the lens module 1200 are all integrally formed, but the main substrate 1070 includes a reflection module 1100) and the coil for the lens module 1200 may be separately mounted on two or more substrates.

A reinforcing plate (not shown) may be mounted on the bottom of the main board 1070 to reinforce the strength.

In the present embodiment, a closed loop control scheme is used in which the position of the rotation holder 1120 is sensed and fed back when the rotation holder 1120 is rotated.

Therefore, position sensors 1141c and 1143c are required for closed loop control. The position sensors 1141c and 1143c may be hole sensors.

The position sensors 1141c and 1143c are disposed inside or outside the coils 1141b and 1143b and position sensors 1141c and 1143c may be mounted on the main board 1070 on which the coils 1141b and 1143b are mounted have.

The main board 1070 may be provided with a gyro sensor (not shown) for detecting a shaking factor such as a user's hand motion and may include a driving circuit element (not shown) for providing a driving signal to the plurality of coils 1141b, 1143b, Driver IC, not shown) may be provided.

FIGS. 11A to 11C are views schematically showing a rotation holder according to a first embodiment of the present invention rotated about a first axis. FIGS. 12A to 12C are cross- Is rotated about the second axis.

11A to 11C, when rotating about the first axis (X axis), the first ball bearing 1131 having the ball bearings arranged along the first axis (X axis) (In this case, the rotation holder 1120 does not move relative to the rotary plate 1130). 12A to 12C, when rotating about a second axis (Y axis), a second ball bearing 1133 having a ball bearing arranged along a second axis (Y axis) (In this case, since the rotary plate 1130 does not rotate, the rotary holder 1120 moves relative to the rotary plate 1130).

That is, the first ball bearing 1131 acts on the first axis (X axis) and the second ball bearing 1133 acts on the second axis (Y axis). As shown in the drawing, when rotating about the first axis (X axis), the second ball bearing 1133 aligned with respect to the second axis (Y axis) (Y axis), the first ball bearing 1131 aligned with respect to the first axis (X axis) can not move in a state of being fitted in the seating groove.

Light whose path is changed by the reflection module 1100 is incident on the lens module 1200. Therefore, the plurality of stacked lenses provided in the lens module 1200 are aligned in the Z axis, in which the optical axis is the direction in which the light is emitted from the reflection module 1100. The lens module 1200 includes a second driving unit 1240 for implementing AF and zoom functions. In addition, since the lens module 1200, which is relatively light, does not include any other components for the correction of camera shake for implementing the AF and zoom functions, the lens module 1200 is moved in the optical axis direction, so that power consumption can be minimized.

The lens module 1200 includes a lens holder 1220 provided in an inner space of the housing 1010, a lens holder 1220 including a laminated lens therein, and a second driver 1240 for moving the lens holder 1220. [ .

The lens holder 1220 accommodates a plurality of lenses for capturing an object, and the plurality of lenses are mounted on the lens holder 1220 along the optical axis.

The light whose traveling direction is changed by the reflection module 1100 passes through the plurality of lenses and is refracted. The optical axes (Z-axis) of the plurality of lenses are formed perpendicular to the thickness direction (Y-axis direction) of the lens module 1100.

The lens holder 1220 is configured to move in the optical axis (Z-axis) direction for AF (autofocus). In one example, the lens holder 1220 can be configured to be movable in a direction (including the opposite direction) in which light whose traveling direction is changed by the reflection module 1100 passes through the plurality of lenses.

The second driving unit 1240 generates driving force such that the lens holder 1220 can move in the optical axis (Z-axis) direction. That is, the second driving unit 1240 can move the lens holder 1220 to change the distance between the lens holder 1220 and the reflection module 1100.

For example, the second driving unit 1240 includes a plurality of coils 1241b and 1243b disposed to face a plurality of magnets 1241a and 1243a and a plurality of magnets 1241a and 1243a.

When power is applied to the plurality of coils 1241b and 1243b, the electromagnetic force applied between the plurality of magnets 1241a and 1243a and the plurality of coils 1241b and 1243b causes the plurality of magnets 1241a and 1243a, The holder 1220 can be moved in the optical axis (Z-axis) direction.

A plurality of magnets 1241a and 1243a are mounted on the lens holder 1220. [ As an example, a plurality of magnets 1241a and 1243a may be mounted on the side surface of the lens holder 1220.

The plurality of coils 1241b and 1243b are mounted on the housing 1010. [ For example, the plurality of coils 1241b and 1243b may be mounted on the main board 1070, and the main board 1070 may be mounted on the housing 1010. Here, for the sake of convenience of explanation, in the drawing, the coil for the reflection module 1100 and the coil for the lens module 1200 are all mounted on the main board 1070, but the present invention is not limited thereto, The reflection module 1070 may be provided as a separate substrate on which the coil for the reflection module 1100 and the coil for the lens module 1200 are mounted.

In the present embodiment, a closed loop control method is used in which the position of the lens holder 1220 is sensed and fed back when the lens holder 1220 is moved. Therefore, a position sensor 1243c is required for closed loop control. The position sensor 1243c may be a hall sensor.

The position sensor 1243c is disposed inside or outside the coil 1243b and a position sensor 1243c may be mounted on the main board 1070 on which the coil 1243b is mounted.

The lens holder 1220 is provided in the housing 1010 so as to be movable in the optical axis (Z-axis) direction. For example, a plurality of ball members 1250 are disposed between the lens holder 1220 and the housing 1010.

The plurality of ball members 1250 serve as bearings for guiding the movement of the lens holder 1220 in the AF process. It also serves to maintain the gap between the lens holder 1220 and the housing 1010.

The plurality of ball members 1250 are configured to roll in the optical axis (Z-axis) direction when a driving force is generated in the optical axis (Z-axis) direction. Accordingly, the plurality of ball members 1250 guide the movement of the lens holder 1220 in the optical axis (Z-axis) direction.

At least one of the surfaces of the lens holder 1220 and the housing 1010 facing each other is provided with a plurality of guide grooves 1221 and 1231 for accommodating the plurality of ball members 1250.

The plurality of ball members 1250 are accommodated in the plurality of guide grooves 1221 and 1231 and sandwiched between the lens holder 1220 and the housing 1010.

The plurality of guide grooves 1221 and 1231 may have a shape having a length in the optical axis (Z-axis) direction.

The movement of the plurality of ball members 1250 in the directions of the first axis (X axis) and the second axis (Y axis) is restricted while the plurality of ball members 1250 are accommodated in the plurality of guide grooves 1221 and 1231, Lt; / RTI > direction. For example, the plurality of ball members 1250 can roll only in the optical axis (Z-axis) direction.

To this end, each of the plurality of guide grooves 1221 and 1231 may be elongated in the optical axis (Z-axis) direction. The end faces of the plurality of guide grooves 1221 and 1231 may have various shapes such as a round shape, a polygonal shape, and the like.

Here, the lens holder 1220 is pressed toward the housing 1010 so that the plurality of ball members 1250 can be kept in contact with the lens holder 1220 and the housing 1010.

To this end, a yoke 1260 may be mounted on the housing 1010 so as to face a plurality of magnets 1241a and 1243a mounted on a lens holder 1220. [ The yoke 1260 may be a magnetic body.

Attraction is exerted between the yoke 1260 and the plurality of magnets 1241a and 1243a. Accordingly, the lens holder 1220 can be moved in the direction of the optical axis (Z-axis) by the driving force of the second driving unit 1240 in a state of being in contact with the plurality of ball members 1250.

FIG. 13 is an exploded perspective view of a camera module according to a second embodiment of the present invention, and FIG. 14 is an exploded perspective view showing a coupling relationship between a housing and a rotation holder of a camera module according to a second embodiment of the present invention.

13 and 14, the camera module 1002 according to the second embodiment differs from the camera module 1000 according to the first embodiment only in the configuration of the reflection module, and the remaining configurations are the same. In the following description, the same reference numerals are used for the components of the reflection module having the same configuration, and the detailed description thereof is omitted.

The camera module 1002 according to the second embodiment of the present invention includes a reflection module 1100-2, a lens module 1200, and an image sensor module 1300 provided in the housing 1010-2.

The reflection module 1100-2 according to the second embodiment differs from the first embodiment in that the rotation holder 1120-2 is rotatably supported by the housing 1010-2 via the third ball bearing 1142, (I.e., no corresponding configuration of the rotary plate 1130 of the first embodiment).

To this end, the housing 1010-2 is provided with a rotation groove 1041 in a portion opposed to the rotation holder 1120-2, and a rotation protrusion (not shown) inserted into the rotation groove 1041 is formed in the rotation holder 1120-2 1025). In this case, the rotation holder 1041 and the rotation protrusion 1025 are provided in the rotation holder 1120-2 so that only rotation having two degrees of freedom is performed with respect to a predetermined axis (e.g., X axis, Y axis) It can be a polygonal shape such as a triangle, a quadrangle, etc. when viewed in the Z-axis direction (except that the circle can be added with rotational degrees of freedom). This is because when the rotation grooves 1041 and the rotation protrusions 1025 are provided in a polygonal shape, the rotation protrusions 1025 can not rotate with respect to the Z axis after the rotation protrusions 1025 are inserted into the rotation grooves 1041, .

The rims of the rotation grooves 1041 and the rotation protrusions 1025 may be inclined or rounded to facilitate rotation about a predetermined axis (X axis, Y axis).

In addition, a third ball bearing 1142 is arranged along the first axis (X axis) at the rim of the rotation groove 1041 (two ridges may be provided on both sides of the rotation groove 1041). A seating groove 1042 may be formed in the rim of the rotation groove 1041 so that the third ball bearing 1142 is inserted. Here, the seating groove 1042 may be formed in a straight or curved shape along the first axis in the direction of the first axis (X axis). The end surface of the seating groove 1042 may have various shapes such as a round shape and a polygonal shape.

The third ball bearing 1142 may be freely rotatable or fixed to the housing 1010-2 or the rotation holder 1120-2. When the third ball bearing 1142 is fixed to the housing 1010-2 or the rotation holder 1120-2, the third ball bearing 1142 may be spherical or hemispherical (may be smaller or larger than a hemisphere). When the third ball bearing 1142 is fixed to the housing 1010-2 or the rotation holder 1120-2, the third ball bearing 1142 may be integrally formed as a whole, or the third ball bearing 1142 may be manufactured separately, 1010-2 or the rotation holder 1120-2.

Since the reflection module 1100-2 of the present embodiment includes the third ball bearing 1142 aligned along the first axis (X axis), the rotation holder 1120-2 is rotatably supported by the housing through the third ball bearing 1142, (X axis) in the state of being supported by the attracting force of the pulling magnet 1151 and the pulling yoke 1153 to the second axis 1010-2 or the second axis perpendicular to the first axis And can rotate about the axis (Y axis).

In this case, since only the third ball bearing 1142 aligned along the first axis (X axis) is provided, when the rotation is based on the first axis (X axis), the rotation axis of the rotation holder 1120-2 is approximately (X axis) connecting the third ball bearing 1142 and the third ball bearing 1142 when the second ball bearing 1142 rotates about the second axis (Y axis) A rotation axis of the rotation holder 1120-2, which is substantially parallel to the second axis (Y axis), may be formed at a virtual point which is moved a predetermined distance in the direction of the rotation holder 1120-2. However, the position of the rotary shaft can be changed variously according to the design shape. This will be described later in detail with reference to Figs. 15A to 16C.

The reflection module 1100-2 includes a reflection member 1110-2, a rotation holder 1120-2 to which the reflection member 1110-2 is mounted, a housing 1010-2 that supports the rotation holder 1120-2, And a first driving unit 1140 that generates a driving force to move the rotation holder 1120-2.

The reflecting member 1110-2 is configured to change the traveling direction of light. As an example, the reflecting member 1110-2 may be a mirror or a prism that reflects light. The reflecting member 1110-2 is fixed to the rotation holder 1120-2.

The first driving unit 1140 generates a driving force so that the rotation holder 1120-2 can rotate based on two directions. For example, the first driving unit 1140 includes a plurality of coils 1141b, 1143b, and 1145b disposed to face a plurality of magnets 1141a, 1143a, and 1145a and a plurality of magnets 1141a, 1143a and 1145a, Position sensors 1141c and 1143c may be provided to sense the position of the holder 1120-2. Since the driving and the position of the driving device are the same as those described in the first embodiment, the detailed description is omitted.

FIGS. 15A to 15C are views schematically showing a rotation holder according to a second embodiment of the present invention rotated about a first axis, and FIGS. 16A to 16C are views for explaining a rotation according to the second embodiment of the present invention Fig. 3 is a view schematically showing the holder rotated about the second axis; Fig.

15A to 15C, when the rotation holder 1120-2 rotates with respect to the first axis (X axis), the first axis (X axis) on which the third ball bearings 1142 are arranged . In this case, since only the third ball bearing 1142 aligned along the first axis (X axis) is provided, when the rotation is based on the first axis (X axis), the rotation axis of the rotation holder 1120-2 is approximately Is an extension line connecting the ball bearing 1142 and is an axis parallel to the first axis (X axis).

16A to 16C, when the rotation holder 1120-2 rotates with respect to the second axis (Y axis), the rotation of the inner surface of the housing 1010-2, in which the third ball bearing 1142 is provided, A rotation axis of the rotation holder 1120-2 which is substantially parallel to the second axis (Y axis) may be formed at a virtual point shifted a predetermined distance in the direction of the holder 1120-2. In this case, since the rotating shaft is provided at a portion spaced apart from the contact portion between the third ball bearing 1142 and the rotating holder 1120-2, the amount of sliding movement of the rotating holder 1120-2 is set with respect to the first axis It may be more than moving.

FIG. 17 is an exploded perspective view of a camera module according to a third embodiment of the present invention, and FIG. 17 is an exploded perspective view showing a coupling relation between a housing and a rotation holder of a camera module according to a third embodiment of the present invention.

17 and 18, the camera module 1003 according to the third embodiment differs from the camera module 1000 according to the first embodiment only in the configuration of the reflection module, and the remaining configurations are the same. In the following description, the same reference numerals are used for the components of the reflection module having the same configuration, and the detailed description thereof is omitted.

The camera module 1003 according to the third embodiment of the present invention includes a reflection module 1100-3, a lens module 1200, and an image sensor module 1300 provided in the housing 1010-3.

The reflection module 1100-3 according to the third embodiment differs from the first embodiment in that the rotation holder 1120-3 is rotatably supported by the housing 1010-3 via the fourth ball bearing 1143, (I.e., no corresponding configuration of the rotary plate 1130 of the first embodiment).

To this end, the housing 1010-3 is provided with a rotation groove 1043 in a portion opposed to the rotation holder 1120-3, and a rotation projection 1043 inserted in the rotation groove 1043 is formed in the rotation holder 1120-3 1026, respectively. However, in order to make the rotation holder 1120-3 have only rotation having two degrees of freedom with respect to a predetermined axis (for example, the X axis and the Y axis), the rotation groove 1043 and the rotation projection 1026, Viewed in the direction, it can be, for example, a polygonal shape, such as a triangle, a square or the like (except that the circle can be added with rotational degrees of freedom). This is because when the rotation grooves 1043 and the rotation protrusions 1026 are provided in a polygonal shape, the rotation protrusions 1026 can not rotate about the Z axis after the rotation protrusions 1026 are inserted into the rotation grooves 1043, .

The rims of the rotation grooves 1043 and the rotation protrusions 1026 may be inclined or rounded to facilitate rotation about a predetermined axis (X axis, Y axis).

In addition, a fourth ball bearing 1143 arranged along the second axis (Y axis) is provided on the rim of the rotation groove 1043 (two rims are provided on both sides of the rotation groove 1043 so as to be aligned in the Y axis direction) . A seating groove 1044 may be formed in the rim of the rotation groove 1043 so that the fourth ball bearing 1143 is inserted. Here, the seating groove 1044 may be provided along the rim in a straight or curved shape in the direction of the second axis (Y axis). The end surface of the seating groove 1044 may have various shapes such as a round shape and a polygonal shape.

The fourth ball bearing 1143 may be freely rotatable or fixed to the housing 1010-3 or the rotation holder 1120-3. When the fourth ball bearing 1143 is fixed to the housing 1010-3 or the rotation holder 1120-3, the fourth ball bearing 1143 may be spherical or hemispherical (may be smaller or larger than a hemisphere). When the fourth ball bearing 1143 is fixed to the housing 1010-3 or the rotation holder 1120-3, the fourth ball bearing 1143 may be integrally formed as a whole or the fourth ball bearing 1143 may be separately manufactured and housed in the housing 1010-3 or the rotation holder 1120-3.

Since the reflection module 1100-3 of the present embodiment includes the fourth ball bearing 1143 aligned along the second axis (Y axis), the rotation holder 1120-3 can be rotated by the fourth ball bearing 1143 via the housing (Y axis) in a state of being supported by the attracting force of the pulling magnet 1151 and the pulling yoke 1153 to the first axis 1010-3 or the first axis perpendicular to the second axis It can rotate about the axis (X axis).

In this case, since only the fourth ball bearing 1143 aligned along the second axis (Y axis) is provided, when the rotation is based on the second axis (Y axis), the rotation axis of the rotation holder 1120-3 is approximately (Y axis) connecting the four ball bearings 1143 and the inner surface of the housing 1010-3 provided with the fourth ball bearings 1143 when rotating about the first axis (X axis) A rotation axis of the rotation holder 1120-3 which is substantially parallel to the first axis (X axis) may be formed at a virtual point moved a predetermined distance in the direction of the holder 1120-3. This will be described later in detail with reference to FIGS. 19A to 20C.

The reflection module 1100-3 includes a reflection member 1110-3, a rotation holder 1120-3 to which the reflection member 1110-3 is mounted, a housing 1010-3 that supports the rotation holder 1120-3, And a first driving unit 1140 that generates a driving force to move the rotation holder 1120-3.

The reflecting member 1110-3 is configured to change the traveling direction of the light. In one example, the reflecting member 1110-3 may be a mirror or a prism that reflects light. The reflecting member 1110-3 is fixed to the rotation holder 1120-3.

The first driving unit 1140 generates a driving force so that the rotation holder 1120-3 can rotate about two directions. For example, the first driving unit 1140 includes a plurality of coils 1141b, 1143b, and 1145b disposed to face a plurality of magnets 1141a, 1143a, and 1145a and a plurality of magnets 1141a, 1143a and 1145a, Position sensors 1141c and 1143c may be provided to sense the position of the holder 1120-3. Since the driving and the position of the driving device are the same as those described in the first embodiment, the detailed description is omitted.

FIGS. 19A to 19C are views schematically showing the rotation holder according to the third embodiment of the present invention being rotated with respect to the first axis. FIGS. 20A to 20C are views showing a rotation according to the third embodiment of the present invention FIG. 3 is a view schematically showing a holder rotated about a second axis, FIG.

19A to 19C, when the rotation holder 1120-3 rotates with respect to the first axis (X axis), rotation is performed on the inner surface of the housing 1010-3 provided with the fourth ball bearing 1143 A rotation axis of the rotation holder 1120-3 which is substantially parallel to the first axis (X axis) may be formed at a virtual point shifted a predetermined distance in the direction of the holder 1120-3. In this case, since the rotary shaft is provided at a portion spaced apart from the contact portion between the fourth ball bearing 1143 and the rotary holder 1120-3, the amount of sliding movement of the rotary holder 1120-3 is determined based on the second axis It may be more than moving.

20A to 20C, when the rotation holder 1120-3 rotates about the second axis (Y axis), the second axis (Y axis) on which the fourth ball bearings 1143 are arranged . In this case, since only the fourth ball bearing 1143 aligned along the second axis (Y axis) is provided, when the rotation is based on the second axis (Y axis), the rotation axis of the rotation holder 1120-3 is approximately Is an extension line connecting the ball bearing 1143, which is approximately parallel to the second axis (Y axis).

FIG. 21 is an exploded perspective view of a camera module according to a fourth embodiment of the present invention, and FIG. 22 is an exploded perspective view showing a coupling relationship between a housing and a rotation holder of a camera module according to a fourth embodiment of the present invention.

21 and 22, the camera module 1004 according to the fourth embodiment is different from the camera module 1002 according to the second embodiment in that the seating groove on which the third ball bearing 1142 is seated is the rotation holder 1120-2, and the rest of the configuration is the same. Hereinafter, only the structure of the seating groove having a difference will be briefly described, and the same reference numerals will be used for the same components and the detailed description will be omitted.

The camera module 1004 according to the fourth embodiment of the present invention includes a reflection module 1100-2, a lens module 1200 and an image sensor module 1300 provided in the housing 1010-2.

Unlike the second embodiment, the reflection module 1100-2 according to the fourth embodiment is provided with a mounting groove 1027 on which the third ball bearing 1142 is mounted, in the rotation holder 1120-2. In this case, the seating groove 1027 may be formed in a straight or curved shape in the direction of the first axis (X axis) at the edge of the rotation projection 1025. The end surface of the seating groove 1027 may have various shapes such as a round shape and a polygonal shape. Other configurations are the same as those of the second embodiment, and therefore, detailed description thereof will be omitted.

According to the structure in which the seating groove 1027 is provided in the rotation holder 1120-2, only the position where the third ball bearing 1142 is provided is slightly different from that of the rotation holder 1120-2, Axis) or the second axis (Y axis) is the same as that of the second embodiment, and the related drawings are replaced with Figs. 15A to 15C and Figs. 16A to 16C.

FIG. 23 is an exploded perspective view of a camera module according to a fifth embodiment of the present invention, and FIG. 24 is an exploded perspective view showing a coupling relationship between a housing and a rotation holder of a camera module according to a fifth embodiment of the present invention.

23 and 24, the camera module 1005 according to the fifth embodiment is different from the camera module 1003 according to the third embodiment in that the seating groove on which the fourth ball bearing 1143 is seated is a rotary holder 1120-3), and the remaining configurations are the same. Hereinafter, only the structure of the seating groove having a difference will be briefly described, and the same reference numerals will be used for the same components and the detailed description will be omitted.

The camera module 1005 according to the fifth embodiment of the present invention includes a reflection module 1100-3, a lens module 1200, and an image sensor module 1300 provided in the housing 1010-3.

Unlike the third embodiment, the reflection module 1100-3 according to the fifth embodiment is provided with a seating groove 1028 in which the fourth ball bearing 1143 is seated, in the rotation holder 1120-3. Here, the seating groove 1028 may be formed in a straight or curved shape in the direction of the second axis (Y axis) at the rim of the rotation projection 1025. The end surface of the seating groove 1028 may have various shapes such as a round shape, a polygonal shape, and the like. Other configurations are the same as those of the third embodiment, and therefore, detailed description thereof will be omitted.

According to the structure in which the seating groove 1028 is provided in the rotation holder 1120-3, only the position where the fourth ball bearing 1143 is provided is slightly different from that of the rotation holder 1120-3, Axis or the second axis (Y-axis) is substantially the same as that of the third embodiment, the related drawings are replaced with Figs. 19A to 19C and Figs. 20A to 20C.

25 is a perspective view of a portable electronic device according to another embodiment of the present invention.

25, the portable electronic device 2 according to an embodiment of the present invention may be a portable electronic device such as a mobile communication terminal equipped with a plurality of camera modules 500 and 1000, a smart phone, a tablet PC, have.

In the present embodiment, a plurality of camera modules 500 and 1000 may be mounted on the portable electronic device 2. [

At least one camera module among the plurality of camera modules 500 and 1000 includes camera modules 1000-1001, 1002, 1003, 1004, and 1005 according to the first to fifth embodiments described with reference to FIGS. ).

That is, in the case of the portable electronic device having the dual camera module, at least one of the two camera modules may be provided as the camera modules 1000-1001, 1002, 1003, 1004, and 1005 according to the embodiment of the present invention .

Through these embodiments, the camera module and the portable electronic device including the camera module according to an embodiment of the present invention can be simplified in structure and size while implementing functions such as auto-focus adjustment, zooming, and camera shake correction. In addition, power consumption can be minimized.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be apparent to those skilled in the art that changes or modifications may fall within the scope of the appended claims.

1, 2: Portable electronic devices
1000 (1001, 1002, 1003, 1004, 1005): Camera module
1100, 1100-2, 1100-3: reflection module
1110, 1110-2, 1110-3: reflection member
1120, 1120-2, 1120-3: rotation holder
1010, 1010-2, 1010-3: housing
1140:
1200: Lens module
1220: Lens holder
1240:
1300: Image sensor module

Claims (22)

A housing having an inner space;
A rotating holder having a reflecting member and being supported on an inner wall of the housing so as to be provided in the inner space with a rotating plate sandwiched therebetween; And
And a driving unit for providing a driving force to cause the rotation holder to flow. The method according to claim 1,
Wherein the rotation plate is rotatable with respect to the housing with respect to a first axis substantially perpendicular to the optical axis,
Wherein the rotation holder is rotatable about an optical axis with respect to the rotation plate and a second axis substantially perpendicular to the first axis. 3. The method of claim 2,
The rotation plate moves together with the rotation holder when the rotation plate rotates about the first axis,
And the rotation holder rotates relative to the rotation plate when the rotation holder rotates about the second axis. The method according to claim 1,
Wherein the rotation plate includes a first shaft and a plurality of ball bearing sets aligned in a second axis direction perpendicular to the first axis, the first axis being opposed to the housing and the second axis being opposed to the rotation holder. The method according to claim 1,
At least two first ball bearings arranged along a first axis substantially perpendicular to an optical axis are provided between the rotating plate and the housing,
And at least two second ball bearings arranged along an optical axis and a second axis substantially perpendicular to the first axis are provided between the rotation holder and the rotation plate. 6. The method of claim 5,
Wherein the rotation plate is rotatable with respect to the first axis,
And the rotation holder is rotatable about the second axis. 6. The method of claim 5,
Wherein the first ball bearing is fixed to the rotating plate or the housing or is freely rotatable,
And the second ball bearing is fixed to the rotation plate or the rotation holder or freely rotatable. 6. The method of claim 5,
Wherein the first ball bearing and the second ball bearing are spherical or spherical partially cut shapes. The method according to claim 1,
Wherein at least one cylindrical or semi-cylindrical first ball bearing is provided between the rotating plate and the housing along a first axis substantially perpendicular to the optical axis,
And at least one cylindrical or semi-cylindrical second ball bearing extending along an optical axis and a second axis substantially perpendicular to the first axis, between the rotation holder and the rotation plate. The method according to claim 1,
Wherein the housing and the rotation holder are selectively provided with a pulling magnet or a pulling yoke, respectively, and the rotation holder is supported by an inner wall of the housing by attraction of the pulling magnet and the pulling yoke. A housing having an inner space;
A rotation holder having a reflection member and supported by an inner wall of the housing to be provided in the inner space;
At least two ball bearings arranged in a first axial direction substantially perpendicular to the optical axis direction between the housing and the rotation holder; And
And a driving unit for providing a driving force to cause the rotation holder to flow. 12. The method of claim 11,
Wherein the rotation holder is rotatable about the first axis,
Wherein the rotation holder is rotatable about an optical axis and a second axis perpendicular to the first axis. 13. The method of claim 12,
And the rotation holder slides on the surface of the ball bearing when the rotation holder rotates about the second axis. 13. The method of claim 12,
Wherein the rotation axis of the rotation holder is formed at a portion of the ball holder spaced a predetermined distance from the ball holder in a direction of the rotation holder when the rotation holder rotates about the second axis. 13. The method of claim 12,
And the rotation holder moves in the first axis direction at a portion in contact with the ball bearing when the rotation holder rotates about the second axis. 12. The method of claim 11,
Wherein the housing and the rotation holder are selectively provided with a pulling magnet or a pulling yoke, respectively, and the rotation holder is supported by an inner wall of the housing by attraction of the pulling magnet and the pulling yoke. 12. The method of claim 11,
Wherein one of the housing and the rotation holder is provided with a seating groove,
Wherein the ball bearing is fixed to the housing or the rotation holder or freely rotatable. 12. The method of claim 11,
The housing or the rotation holder may be provided with rotation projections or rotation grooves selectively on opposite sides thereof,
And the ball bearing is provided between the rotation protrusion and the rotation groove. 19. The method of claim 18,
Wherein the rotation protrusions and the rotation grooves are provided in an oblique or rounded rim. 19. The method of claim 18,
Wherein the rotation protrusions or the rotation grooves have guide grooves formed along a direction in which the ball bearings are aligned. 21. The method of claim 20,
Wherein a cross section of the guide groove has a round or polygonal cross-section. A lens module having a plurality of lenses; And
The camera module according to claim 1 or 11, wherein the camera module is disposed in front of the lens module and changes the light path so that the light incident on the lens module faces the lens module.

Images