KR20190059444A - Dual Camera module - Google Patents

Abstract

According to an embodiment of the present invention, a dual camera module comprises: a first camera module; a second camera module having a reflection member changing a path of incident light and having an optical axis generally perpendicular to the first camera module; and a bracket receiving the first and second camera modules therein and having a plurality of conductive patterns. The second camera module can only have one outer connection connector.

Description

A dual camera module

The present invention relates to a camera module.

In recent years, cameras have been basically adopted for portable electronic devices such as smartphones, tablet PCs, and notebooks. The camera for mobile terminals includes an auto focus function (AF), an image stabilization function (OIS) 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.

In order to realize the autofocus function (AF) and the zoom function (Zoom), a predetermined length or more must be secured in the direction of the optical axis. However, such a structure is difficult to implement due to the thinness of the camera module.

In recent years, a dual camera module having two lens modules has been adopted.

Accordingly, the conventional dual camera module has a problem that the structure is further complicated because a plurality of connectors must be provided for implementing a plurality of functions.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a dual camera module in which the structure is simplified while assuring the maximum performance of the camera and the assembly is very easy.

A dual camera module according to an embodiment of the present invention includes a first camera module; A second camera module having a reflecting member for changing the path of light to be incident, the optical axis of which is substantially perpendicular to the first camera module; And a bracket that houses the first camera module and the second camera module and includes a plurality of conductive patterns, and the second camera module may include only one external connection connector.

According to another aspect of the present invention, there is provided a camera module including: a housing having an inner space; A reflecting member provided in the inner space and changing a path of incident light; A lens module disposed in the inner space so as to be disposed behind the reflective member and including a plurality of lenses arranged in an optical axis direction; A driving unit including a plurality of coils for providing a camera shake correction and an auto focus adjustment drive of the lens module; An image sensor for sensing light passing through the lens module; A driving board on which a plurality of the coils are mounted; And a sensor substrate on which the image sensor is mounted, and an external connection connector may be provided on only one of the driving substrate and the sensor substrate.

According to the present invention, it is possible to provide a dual camera module in which the structure is further simplified while ensuring the maximum performance of the camera, and the assembly is very easy.

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 dual camera module according to an exemplary embodiment of the present invention,
3 is a partially exploded perspective view of a dual camera module according to an embodiment of the present invention,
FIG. 4 is a perspective view of a second camera module according to an embodiment of the present invention,
5 is an exploded perspective view of a second camera module according to an embodiment of the present invention,
6 is a perspective view illustrating a structure in which a substrate is coupled to a housing in a second camera module according to an embodiment of the present invention,
7 to 9 are perspective views illustrating a shape of a bracket having a conductive pattern according to an 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.

Referring to FIG. 1, the portable electronic device 1 according to an exemplary embodiment of the present invention may be a portable electronic device including a mobile communication terminal, a smart phone, a tablet PC, and the like equipped with the dual camera module 2000.

As shown in Fig. 1, the portable electronic device 1 is equipped with a dual camera module 2000 so that a subject can be photographed.

In this embodiment, the camera module 2000 includes a first camera module 500 and a second camera module 1000, and at least one of them includes a second camera module 1000 (refer to the second camera module 1000 shown in the drawing) ), And 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 (Y axis direction, the direction from the front surface to the rear surface of the portable electronic device In the opposite direction).

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

Therefore, even if the second camera module 1000 has functions such as Auto Focusing (AF), Zoom, and Optical Image Stabilization (OIS), the thickness of the portable electronic device 1 Can be prevented from increasing. Thus, the portable electronic device 1 can be downsized.

The dual camera module 2000 according to an embodiment of the present invention includes a first camera module 500 and a second camera module 1000. The first camera module 500 and the second camera module 1000 may have AF, Zoom and OIS functions.

Since the camera modules 500 and 1000 having AF, Zoom, and OIS functions must have various components, the size of the camera module increases as compared with a general camera module.

If the sizes of the camera modules 500 and 1000 are increased, the portable electronic device 1 on which the camera module 1000 is mounted may become a problem in miniaturization.

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 a plurality of lens groups in the optical axis direction or in the direction perpendicular to the optical axis should be provided. 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, in the dual camera module 2000 according to an embodiment of the present invention, for example, the optical axis (Z-axis) of a plurality of lenses as in the second camera module 1000 is perpendicular to the thickness direction of the portable electronic device 1 It is possible to miniaturize the portable electronic device 1 even if the camera module 2000 having the AF, Zoom and OIS functions is mounted (the first camera module 500 is similar to the second camera module 1000) An optical axis structure may be provided or an optical axis may be vertically provided in the second camera module 1000).

FIG. 2 is a side view of a dual camera module according to an embodiment of the present invention, and FIG. 3 is a partially exploded perspective view of a dual camera module according to an embodiment of the present invention.

Referring to FIGS. 2 and 3, the dual camera module 2000 according to an embodiment of the present invention includes a first camera module 500 and a second camera module 1000. At least one of the first camera module 500 and the second camera module 1000 includes a mirror (prism), so that the direction of the incident light and the direction of the optical axis (Z-axis) can be substantially perpendicular. In the following description, for example, the second camera module 1000 is shown in such a structure and the first camera module 500 is structured without a mirror (prism).

The second camera module 1000 includes a reflection member 1110 and the optical axis of the first camera module 500 can be substantially perpendicular. In the drawing, the optical axis of the first camera module 500 may be the Y axis direction, and the second camera module 1000 may be the Z axis direction.

The first camera module 500 and the second camera module 1000 may be accommodated in the bracket 1500.

The bracket 1500 includes the spaces 1510 and 1520 in which the first camera module 500 and the second camera module 1000 are accommodated, A plurality of conductive patterns 1530 may be provided. The conductive pattern 1530 can be printed on the inner surface or the outer surface of the bracket 1500 in a pattern shape in various ways. For example, by Laser Direct Structuring (LDS). The conductive pattern 1530 may be coated or coated with an insulating material for external insulation.

The driving substrate 1070 and the sensor substrate 1320 of the second camera module 1000 can be electrically connected to each other by the plurality of conductive patterns 1530. Accordingly, the second camera module 1000 may include only one external connection connector 1327 or 1077 connected to the driving substrate 1070 or the sensor substrate 1320 and extended to be exposed to the outside. In the drawing, the first external connection connector 1327 is denoted by a solid line and the second external connection connector 1077 is denoted by a dotted line. In the embodiment of the present invention, the first external connection connector 1327 and the second external connection connector Only one of the connectors 1077 may be provided.

FIG. 4 is an exploded perspective view of a second camera module according to an embodiment of the present invention, FIG. 5 is an exploded perspective view of a second camera module according to an embodiment of the present invention, FIG. FIG. 2 is a perspective view illustrating a structure in which a substrate is coupled to a housing in a second camera module according to an embodiment of the present invention;

Referring to Figs. 4 to 6, a second camera module 1000 according to the present embodiment is disclosed.

The second camera module 1000 according to the present embodiment includes a reflection module 1100, a lens module 1200, and an image sensor module 1300 provided in the housing 1010.

The reflection module 1100 is configured to change the traveling direction of the light. For example, the light incident through the opening 1031 of the cover 1030 covering the camera module 1000 may be changed in the direction of the light toward the lens module 1200 through the reflection module 1100. For this purpose, the reflection module 1100 may include a reflection member 1110 for reflecting light.

For example, the light incident on the thickness direction (Y-axis direction) of the camera module 1000 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 whose direction of travel is changed by the reflection module 1100 is passed. The lens module 1200 includes at least two lens barrels 1210 and 1220. An auto focus (AF) and a zoom function (Zoom) can be implemented in accordance with the movement of the at least two lens barrels 1210 and 1220 in the optical axis direction (Z axis). In this embodiment, two lens barrels 1210 and 1220 are provided, but the present invention is not limited thereto, and one or more lens barrels may be provided.

The image sensor module 1300 includes an image sensor 1310 that converts light having passed through a plurality of lenses into an electric signal and a sensor substrate 1320 on which the image sensor 1310 is mounted. The image sensor module 1300 may include an optical filter 1340 that filters light incident through 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.

In other words, the reflection module 1100, the lens module 1200, and the image sensor module 1300 are sequentially disposed in the housing 1010 from one side to the other side. The sensor substrate 1320 having the image sensor module 1300 includes a housing 1010 and a sensor module 1320. The sensor module 1320 includes an internal space for interpolating the reflection module 1100, the lens module 1200, and the image sensor module 1300, As shown in FIG.

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 a plurality of lens groups (at least two lens barrels 1210 and 1220), 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. Accordingly, 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.

The housing 1010 is provided with a first driving part 1140 and a second driving part 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 lens modules 1200, And includes a plurality of coils 1241b and 1243b for driving the lens barrel 1210 and the second lens barrel 1220.

The plurality of coils 1141b, 1143b, 1145b, 1241b, and 1243b may be mounted on the housing 1010 while being mounted on the driving substrate 1070.

Here, the driving substrate 1070 on which the plurality of coils 1141b, 1143b, 1145b, 1241b, and 1243b are mounted may be integrally connected as shown in the figure. However, the present invention is not limited thereto, and the driving substrate 1070 may be formed of a plurality of substrates, for example, by separating the substrate on which the coil for the reflection module 1100 is mounted and the substrate on which the coil for the lens module 1200 is mounted Or may be interconnected.

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.

The reflection module 1100 includes a first driving part 1140 supported by the housing 1010 and driving the reflection module 1100.

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

The first driving unit 1140 generates a driving force so that the rotation holder 1120 is rotatable about two axes including a first axis perpendicular to the optical axis and a second axis including an optical axis and a first axis.

For example, the first driving unit 1140 may include 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. have.

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 to the housing 1010 via the driving substrate 1070. [ That is, the plurality of coils 1141b, 1143b, and 1145b are provided on the driving substrate 1070, and the driving substrate 1070 is mounted on the housing 1010.

The drive substrate 1070 is integrally formed so that the coil for the reflection module 1100 and the coil for the lens module 1200 are both mounted on the drive substrate 1070. The drive substrate 1070 includes a reflection module 1100, And a coil for the lens module 1200 may be separately mounted on two or more substrates.

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. Accordingly, position sensors 1141c and 1143c are required. The position sensors 1141c and 1143c may be hole sensors.

Light reflected by the reflection module 1100 may be incident on the lens module 1200. The incident light can be implemented by an automatic focus adjustment (AF) or a zoom function by moving the optical axis direction (Z axis) of at least two lens barrels 1210 and 1220 provided in the lens module 1200 have.

The plurality of stacked lens groups included in the lens module 1200 may be divided into at least two lens barrels 1210 and 1220, respectively. Although the plurality of laminated lens groups are divided into at least two lens barrels 1210 and 1220, the optical axis is aligned with the Z axis, which is the direction in which the light is emitted from the reflection module 1100.

The lens module 1200 includes a second driver 1240 for implementing an auto focus (AF) function and a zoom function.

The lens module 1200 includes at least two lens barrels-a first lens barrel 1210 and a second lens barrel 1220, which are movably disposed in an inner space of the housing 1010 in the optical axis direction (Z-axis direction) do. And a second driving unit 1240 for moving the first lens barrel 1210 and the second lens barrel 1220 in the optical axis (Z-axis) direction with respect to the housing 1010. [

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 a power is applied to the plurality of coils 1241b and 1243b, a plurality of magnets 1241a and 1243a are divided and mounted by electromagnetic effects between the plurality of magnets 1241a and 1243a and the plurality of coils 1241b and 1243b The first and second lens barrels 1210 and 1220 can be moved in the optical axis (Z-axis) direction, respectively.

A part 1241a of the plurality of magnets 1241a and 1243a is mounted on the first lens barrel 1210. [ In one example, a plurality of magnets 1241a may be mounted on the side of the first lens barrel 1210. [ Further, the remaining magnet 1243a is mounted on the second lens barrel 1220. As an example, the remaining magnet 1243a may be mounted on the side of the second lens barrel 1220. [

A part 1241b of the plurality of coils 1241b and 1243b is mounted on the housing 1010 so as to face a part 1241a of the plurality of magnets. Further, the remaining coil 1243b is mounted on the housing 1010 so as to face the remaining magnets 1243a.

For example, the plurality of coils 1241b and 1243b may be mounted on the driving substrate 1070, and the driving substrate 1070 may be mounted on the housing 1010.

In this embodiment, a closed loop control method is used in which the positions of the first and second lens barrels 1210 and 1220 are detected and fed back when the first and second lens barrels 1210 and 1220 are moved. Therefore, position sensors 1241c and 1243c are required for closed loop control. The position sensors 1241c and 1243c may be Hall sensors.

The driving substrate 1070 includes a first connection terminal 1075 for electrical connection with the sensor substrate 1320. Of course, the sensor substrate 1320 may also include a second connection terminal 1325 in a corresponding number (e.g., the same number as the first connection terminal 1075). The plurality of first connection terminals 1075 and the second connection terminals 1325 may be electrically connected to each other by a conductive pattern 1530 provided on the bracket 1500. For example, one end of the conductive pattern 1530 may be connected to the first connection terminal 1075, and the other end of the conductive pattern 1530 may be connected to the second connection terminal 1325.

And may include only one external connection connector 1327 or 1077 connected to the driving substrate 1070 or the sensor substrate 1320 so as to be extended to be exposed to the outside. In the drawing, the first external connection connector 1327 is denoted by a solid line and the second external connection connector 1077 is denoted by a dotted line. In the embodiment of the present invention, the first external connection connector 1327 and the second external connection connector Only one of the connectors 1077 may be provided.

7 to 9 are perspective views illustrating a shape of a bracket having a conductive pattern according to an embodiment of the present invention.

Referring to FIG. 7, the second camera module 1000 according to the present embodiment may be inserted into the second internal space 1520 of the bracket 1501.

A plurality of conductive patterns 1531 may be provided on the outer surface of the bracket 1501. The plurality of conductive patterns 1531 can electrically connect the first connection terminal 1075 of the driving substrate 1070 and the second connection terminal 1325 of the sensor substrate 1320 to each other.

One end of the conductive pattern 1531 is connected to the first connection terminal 1075 of the driving substrate 1070 and the other end of the conductive pattern 1531 is connected to the second connection terminal 1325 of the sensor substrate 1320 Can be connected.

Referring to FIGS. 8A and 8B, the second camera module 1000 according to the present embodiment can be inserted into the second inner space 1520 of the bracket 1502. [0156] FIG.

A plurality of conductive patterns 1532 may be provided on the inner surface of the bracket 1502. The plurality of conductive patterns 1532 can electrically connect the first connection terminal 1075 of the driving substrate 1070 and the second connection terminal 1325 of the sensor substrate 1320 to each other.

One end of the conductive pattern 1532 is connected to the first connection terminal 1075 of the driving substrate 1070 and the other end of the conductive pattern 1532 is connected to the second connection terminal 1325 of the sensor substrate 1320 Can be connected.

The present embodiment also includes shapes in which the conductive patterns 1531 and 1532 shown in FIG. 7 and FIG. 8A are combined with each other. For example, a structure in which the conductive pattern is provided on both the inner and outer surfaces of the bracket is also included.

Referring to FIG. 9, the second camera module 1000 according to the present embodiment may be inserted into the second internal space 1520 of the bracket 1503. [

In addition, a plurality of conductive patterns 1533 may be provided on the outer surface of the bracket 1503. The plurality of conductive patterns 1533 can electrically connect the first connection terminal 1075 of the driving substrate 1070 and the second connection terminal 1325 of the sensor substrate 1320 to each other.

One end of the conductive pattern 1532 is connected to the first connection terminal 1075 of the driving substrate 1070 and the other end of the conductive pattern 1532 is connected to the second connection terminal 1325 of the sensor substrate 1320 Can be connected.

Some of the conductive patterns 1533 of the present embodiment connect the first connection terminal 1075 provided on the upper portion of the driving substrate 1070 and the second connection terminal 1325 provided on the upper portion of the sensor substrate 1320 And the other part may connect the first connection terminal 1075 provided at the lower part of the driving substrate 1070 and the second connection terminal 1325 provided at the lower part of the sensor substrate 1320. [ Some of the conductive patterns 1533 may include a first connection terminal 1075 provided on the upper portion (or the lower portion) of the driving substrate 1070 and a second connection terminal 1075 provided on the lower (or upper) (1325).

Through such embodiments, the dual camera module and the portable electronic device including the same according to the embodiment of the present invention can realize a simple structure and a reduced 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: Portable electronic devices
500: first camera module
1000: Second camera module
1010: Housing
1100: Reflection module
1110: reflective member
1120: Rotary holder
1140:
1200: Lens module
1210: First lens barrel
1220: Second lens barrel
1240:
1300: Image sensor module
2000: Dual camera module

Claims (16)

A first camera module;
A second camera module having a reflecting member for changing the path of light to be incident, the optical axis of which is substantially perpendicular to the first camera module; And
And a bracket for receiving the first camera module and the second camera module therein and having a plurality of conductive patterns,
Wherein the second camera module includes only one external connection connector.
The apparatus of claim 1, wherein the second camera module comprises:
A driving board on which a plurality of coils for driving a camera module of the lens module are mounted; And
And a sensor substrate on which an image sensor for sensing light passing through the lens module is mounted,
Wherein the external connection connector is provided only on one of the driving substrate and the sensor substrate.
3. The method of claim 2,
Wherein the driving substrate and the sensor substrate are provided with a plurality of first and second connection terminals, respectively.
The method of claim 3,
Wherein the first connection terminal and the second connection terminal are mutually connected by the conductive pattern provided on the bracket.
5. The method of claim 4,
Wherein the number of the first connection terminals provided on the driving substrate and the number of the second connection terminals provided on the sensor substrate are the same.
The method according to claim 1,
Wherein the conductive pattern is provided on an outer surface of the bracket.
The method according to claim 1,
Wherein the conductive pattern is provided on the inner surface of the bracket.
The method according to claim 1,
Wherein the conductive pattern is provided on an outer surface and an inner surface of the bracket.
The method according to claim 1,
Wherein the conductive pattern is formed by LDS (Laser Direct Structuring).
The method according to claim 1,
Wherein the sensor substrate is provided on one surface of the second camera module.
The method according to claim 1,
Wherein the driving substrate is provided so as to surround two side surfaces and a bottom surface of the second camera module.
The method according to claim 1,
Wherein the conductive pattern is coated with an insulating material.
The method according to claim 1,
Wherein the reflective member changes the path of incident light by approximately 90 degrees.
A housing having an inner space;
A reflecting member provided in the inner space and changing a path of incident light;
A lens module disposed in the inner space so as to be disposed behind the reflective member and including a plurality of lenses arranged in an optical axis direction;
A driving unit including a plurality of coils for providing a camera shake correction and an auto focus adjustment drive of the lens module;
An image sensor for sensing light passing through the lens module;
A driving board on which a plurality of the coils are mounted; And
And a sensor substrate on which the image sensor is mounted,
Wherein the external connection connector is provided only on one of the driving board and the sensor board.
14. The method of claim 13,
And a plurality of first and second connection terminals are provided on the driving substrate and the sensor substrate, respectively.
15. The method of claim 14,
Wherein the number of the first connection terminals provided on the driving substrate and the number of the second connection terminals provided on the sensor substrate are the same.

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