KR20140003022A - Camera module - Google Patents

Abstract

Disclosed is a camera module. The camera module includes a housing; a lens barrel disposed in the housing to receive a lens; and a driving unit moving the lens barrel relative to the housing. The driving unit includes a first driving unit in the lens barrel; and a second driving unit in the housing, and the first driving unit applies attraction or repulsion force to the second driving unit in an inclined direction of a standard horizontal surface perpendicular to an optical axis of the lens.

Description

Camera module {CAMERA MODULE}

Embodiments relate to a camera module.

Currently, camera modules are installed in the production of automobiles and endoscopes, including mobile communication terminals, IT devices such as PDAs and MP3 players. At the same time, miniaturization and thinning are being progressed according to the mounting target, and various additional functions such as auto focusing (AF) and optical zoom (OPTICAL ZOOM) are being implemented at low cost.

In addition, the current camera module is equipped with an image sensor module manufactured in a wire bonding method (COB; Chip Of Board), flip chip method (COF; Chip Of Flexible) and chip scale package (CSP) It is mainly manufactured in the form of being connected to the main board through electrical connection means such as a printed circuit board (PCB) or a flexible printed circuit board (FPCB).

In recent years, however, a camera module has been demanded from a user that can be directly mounted on a main board as in a general passive device, thereby simplifying a manufacturing process and reducing manufacturing cost.

In such a camera module, an image sensor such as a CCD or a CMOS is mainly manufactured in a state of being attached to a substrate by a wire bonding or flip chip method. The data is stored on the image, and the stored data is converted into an electrical signal and displayed as an image on a display medium such as an LCD or a PC monitor in the device.

The conventional camera module includes a housing in which an image sensor for converting an image signal input through a lens into an electrical signal is supported on the bottom, a lens group for collecting an image signal of a subject in the image sensor, and the lens group stacked therein. It is constructed by the sequential joining of the barrels.

At this time, the lower part of the housing is electrically coupled to the mounting substrate (FPCB) attached to the capacitor and the chip component of the resistor for the electrical component for driving the image sensor consisting of CCD or CMOS.

In the conventional camera module configured as described above, an anisotropic conductive film (ACF) is inserted between the substrate and the image sensor in a state in which a plurality of circuit components are mounted on the mounting substrate (FPCB), and energized by applying heat and pressure. Adhesively fix and attach the infrared cut filter unit on the opposite side.

In addition, in the state where the barrel and the housing in which the plurality of lens groups are built are temporarily coupled by screwing, the previously assembled mounting substrate is adhesively fixed to the bottom of the housing by a separate adhesive agent.

On the other hand, after the adhesive fixing of the housing to which the mounting substrate and the barrel to which the image sensor is attached is fixed, the focus adjustment is performed by setting a subject (resolution chart) at a predetermined distance in front of the barrel. As the vertical feed amount by the rotation of the barrel screwed to the housing is adjusted, the focus is adjusted between the lens group and the image sensor.

Embodiments provide a camera module that effectively prevents camera shake.

Camera module according to an embodiment includes a housing; A lens barrel disposed within the housing and containing one or more lenses; A drive unit for moving the housing and the lens barrel relative to the housing, the drive unit being fixed to the lens barrel; And a second driving part fixed to the housing, wherein the first driving part applies an attractive force or repulsive force to the second driving part in a direction inclined with respect to a reference horizontal plane perpendicular to the optical axis of the lens.

Camera module according to an embodiment includes a housing; A lens barrel disposed within the housing and containing one or more lenses; An elastic member fixed to the housing and the lens barrel; A first driver fixed to one outer side of the lens barrel; And a second driving part fixed to the inside of the housing, opposed to the first driving part, and applying a magnetic force to the first driving part.

Camera module according to an embodiment includes a housing; A lens barrel disposed within the housing and containing one or more lenses; An elastic member fixed to the housing and the lens barrel; And a driving unit which relatively moves the lens barrel with respect to the housing, wherein the driving unit includes a magnetic material magnetized in a direction inclined with respect to the optical axis of the lens.

The camera module according to the embodiment may compensate for shaking by driving the lens barrel with respect to the housing. That is, the driving unit may compensate for shaking by relatively moving the lens barrel with respect to the housing.

In particular, the camera module according to the embodiment moves the lens barrel by applying a magnetic force in a direction inclined with respect to the reference horizontal plane. Accordingly, the camera module according to the embodiment may move the lens barrel in the three axis direction. Accordingly, the camera module according to the embodiment can correct the left and right shake, and at the same time, adjust the focus.

1 is an exploded perspective view showing a camera module according to an embodiment.
2 is a perspective view illustrating the camera module according to the embodiment.
3 is a view showing an elastic member.
4 is a perspective view illustrating the lens barrel and the driving unit.
5 is a cross-sectional view showing a cross-sectional view of the camera module according to the embodiment.
6 is a cross-sectional view showing a longitudinal section of the camera module according to the embodiment.
7 is a view showing a part of the drive unit.
8 is a view showing another part of the drive unit.

In the description of the embodiments, each lens, unit, part, hole, protrusion, groove or layer, etc., is placed on or under the "on" of each lens, unit, part, hole, protrusion, groove, or layer, etc. And " under " include both " directly " or " indirectly " through other components. . In addition, the upper or lower reference of each component is described with reference to the drawings. The size of each component in the drawings may be exaggerated for the sake of explanation and does not mean the size actually applied.

1 is an exploded perspective view showing a camera module according to an embodiment. 2 is a perspective view illustrating the camera module according to the embodiment. 3 is a view showing an elastic member. 4 is a perspective view illustrating the lens barrel and the driving unit. 5 is a cross-sectional view showing a cross-sectional view of the camera module according to the embodiment. 6 is a cross-sectional view showing a longitudinal section of the camera module according to the embodiment. 7 is a view showing a part of the drive unit. 8 is a view showing another part of the drive unit.

1 to 8, the camera module according to the embodiment includes a lens barrel 100, a lens assembly 200, an elastic member 300, a housing 400, an infrared cut filter unit 500, and a sensor unit ( 600, a circuit board 800, and drivers 710, 720.

The lens barrel 100 receives the lens assembly 200.

The lens barrel 100 includes a receiving groove 110 for accommodating the lens assembly 200. The receiving groove 110 may have a shape corresponding to the lens assembly 200. The receiving groove 110 may have a circular shape when viewed from the bottom side. In more detail, the receiving groove 110 may have a circular shape when viewed from the bottom side. That is, the outer periphery of the receiving groove 110 may have a circular shape. Unlike this, the outer periphery of the receiving groove 110 may have a square shape.

The lens barrel 100 may have a rectangular cylindrical shape. That is, the outside of the lens barrel 100 may have a rectangular shape.

The lens barrel 100 is connected to the housing 400. In more detail, the lens barrel 100 is connected to the housing 400 through the elastic member 300. That is, the lens barrel 100 may be connected to the housing 400 by the elastic member 300 to be movable.

In addition, the lens barrel 100 includes a light receiving groove opened upward (object side). The light incident groove exposes the lens assembly 200. An image is incident on the lens assembly 200 through the light incident groove.

The lens assembly 200 is disposed in the lens barrel 100. In more detail, the lens assembly 200 is disposed in the receiving groove 110. The lens assembly 200 is inserted into the receiving groove 110. The lens assembly 200 has a first outer shape. In more detail, the lens assembly 200 may have a circular outer shape. In more detail, the lens assembly 200 may have a circular shape when viewed from the top side. Alternatively, the lens assembly 200 may have a rectangular shape when viewed from the top side.

The lens assembly 200 includes a plurality of lenses 210, 220, and 230. For example, the lens assembly 200 may include a first lens 210, a second lens 220, and a third lens 230. The third lens 230, the second lens 230, and the first lens 210 may be sequentially stacked.

In addition, a first spacer 221 and a second spacer 222 may be interposed between the lenses 210, 220, and 230. The first spacer 221 and the second spacer 222 may be spaced apart from each other between the lenses (210, 220, 230).

In the above, the lens assembly 200 has been described as including three lenses, but is not limited thereto. That is, the lens assembly 200 may include one or two lenses, or may include four or more lenses.

The elastic member 300 is disposed in the housing 400. The elastic member 300 is fixed to the housing 400. In addition, the elastic member 300 is fixed to the lens barrel 100. The elastic member 300 fixes the lens barrel 100 to the housing 400 so as to be movable.

The elastic member 300 may include a spring or the like. In more detail, the elastic member 300 may include a plate-shaped spring. The elastic member 300 may include four elastic parts 310, 320, 330, and 340. For example, the elastic member 300 may include a first elastic portion 310, a second elastic portion 320, a third elastic portion 330, and a fourth elastic portion 340.

One end of the first elastic portion 310 is fixed to the lens barrel 100, and the other end of the first elastic portion 310 is fixed to the housing 400.

In addition, one end of the second elastic portion 320 is fixed to the lens barrel 100, the other end of the second elastic portion 320 is fixed to the housing 400.

In addition, one end of the third elastic portion 330 is fixed to the lens barrel 100, the other end of the third elastic portion 330 is fixed to the housing 400.

In addition, one end of the fourth elastic portion 340 is fixed to the lens barrel 100, the other end of the fourth elastic portion 340 is fixed to the housing 400.

In addition, the elastic member 300 may further include a first fixing ring 350 and the second fixing ring 360.

The first fixing ring 350 surrounds the accommodating groove 110 of the lens barrel 100. The first fixing ring 350 is one end of the first elastic portion 310, one end of the second elastic portion 320, one end of the third elastic portion 330 and the fourth elastic portion Is connected to one end of 340.

The first fixing ring 350 may be fixed to the lens barrel 100. In addition, the first fixing ring 350 fixes positions of the first elastic portion 310, the second elastic portion 320, the third elastic portion 330, and the fourth elastic portion 340. You can.

The second fixing ring 360 is disposed along sidewalls 410, 420, 430, and 440 of the housing 400. The second fixing ring 360 is the other end of the first elastic portion 310, the other end of the second elastic portion 320, the other end of the third elastic portion 330 and the fourth elastic portion Is connected to the other end of 340.

The second fixing ring 360 may be fixed to the housing 400. In addition, the second fixing ring 360 fixes the positions of the first elastic part 310, the second elastic part 320, the third elastic part 330, and the fourth elastic part 340. You can.

The housing 400 accommodates the lens barrel 100, the sensor unit 600, and the infrared cut filter unit 500. The housing 400 is connected through the lens barrel 100 and the elastic member 300.

The housing 400 may be formed of plastic or metal. The housing 400 may have a rectangular cylindrical shape. For example, the housing 400 may include four sidewalls 410, 420, 430, and 440. The sidewalls 410, 420, 430, and 440 may surround the lens barrel 100.

The sidewalls 410, 420, 430, and 440 may be integrally formed with each other. The sidewalls 410, 420, 430, and 440 may face outer surfaces of the lens barrel 100, respectively. The sidewalls 410, 420, 430, and 440 may be a first sidewall 410, a second sidewall 420, a third sidewall 430, and a fourth sidewall 440.

In addition, although not shown in the drawings, the lens barrel 100 may further include a cover part extending from the sidewalls 410, 420, 430, and 440. The cover part may include an opening area for partially exposing the lenses 210, 220, and 230.

The housing 400 is fixed to the circuit board 800. The housing 400 may be fastened to the circuit board 800.

The infrared cut filter 500 is disposed in the housing 400. The infrared cut filter 500 may be fixed to the circuit board 800 and may be fixed to the housing 400. The infrared cut filter 500 filters the incident infrared light. The infrared cut filter 500 may block excessive long wavelengths of light flowing into the sensor 600.

The infrared cut filter 500 may be formed by alternately depositing titanium oxide and silicon oxide on the optical glass. In order to block infrared rays, the thickness of the titanium oxide and the silicon oxide may be appropriately adjusted.

The sensor unit 600 is accommodated in the housing 400. The sensor unit 600 includes a CCD image sensor or a CMOS image sensor. In addition, the sensor unit 600 further includes a circuit board 800 connected to the image sensor. The sensor unit 600 converts an incident image into an electrical signal.

The sensor unit 600 is fixed to the circuit board 800. The sensor unit 600 may be mounted on the circuit board 800. The sensor unit 600 is electrically connected to the circuit board 800.

The circuit board 800 covers the bottom of the housing 400. The circuit board 800 is coupled to the housing 400. The circuit board 800 may be a printed circuit board 800. The circuit board 800 may be electrically connected to the sensor unit 600. The circuit board 800 may apply a signal for driving the sensor unit 600. In addition, the circuit board 800 may receive a signal from the sensor unit 600.

The sensor unit 600 is mounted on the circuit board 800. In more detail, the sensor unit 600 may be fixed to the circuit board 800. That is, the sensor unit 600 may be fixed to the housing 400 through the circuit board 800.

In addition, the circuit board 800 may be electrically connected to the driving units 710 and 720. That is, a signal for driving the drivers 710, 720... May be applied to the drivers 710, 720 .. through the circuit board 800.

The driving units 710, 720... Drive the lens barrel 100 with respect to the housing 400. The driving units 710, 720... Relatively move the lens barrel 100 with respect to the housing 400. In more detail, the driving units 710 and 720 may move the lens barrel 100 relative to the housing 400 in three axis directions.

The driving units 710 and 720 may move the lens barrel 100 relative to the housing 400 by a magnetic force. In this case, the magnetic force may act in a direction inclined with respect to the optical axis OA of the lens assembly 200.

The driving units 710, 720..., The first driving unit 710, the second driving unit 720, the third driving unit 730, the fourth driving unit 740, the fifth driving unit 750, and the sixth driving unit ( 760, a seventh driver 770, and an eighth driver 780.

A reference horizontal plane R perpendicular to the optical axis OA of the lens assembly 200 may be defined. The reference horizontal plane R may pass through the center of the first driver 710. The reference horizontal plane R may bisect the first driver 710.

In addition, an object-side direction may be defined in the direction of the optical axis OA, toward the object side of the lens assembly 200, that is, upwardly based on the drawing. In addition, in the direction in which the optical axis OA extends, to the image side of the lens assembly 200, that is, in the direction toward the sensor unit 600, downward, based on the drawing, an image side direction may be defined. Can be.

In addition, a first direction may be defined in a direction perpendicular to the optical axis OA and in a direction perpendicular to the first driver 710 and the fifth driver 750. In addition, a second direction may be defined in a direction perpendicular to the optical axis OA and in a direction perpendicular to the third driver 730 and the seventh driver 770.

The first direction and the second direction may be perpendicular to each other.

In addition, based on the reference horizontal plane (R), the object side direction is defined as a positive angle, the upper direction is defined as a negative angle. That is, when the direction vector is biased in the object side direction with respect to the reference horizontal plane R, it is defined as a positive angle, and when it is biased in the upward direction, it is defined as a negative angle.

The first driver 710 is fixed to the lens barrel 100. In more detail, the first driver 710 is fixed to the outside of the lens barrel 100. In more detail, the first driver 710 may be attached to an outer surface of the lens barrel 100. The first driver 710 may be attached to a central portion of one outer surface of the lens barrel 100.

The first driver 710 may include a magnetic material. The first driver 710 may be made of a magnetic material. The first driver 710 may include iron oxide, cobalt ferrite or ferrite. The first driver 710 may have a plate shape. The first driver 710 may have a rectangular plate shape.

The magnetization direction of the first driver 710 may be inclined with respect to the optical axis OA. In addition, the magnetization direction of the first driver 710 may be inclined with respect to the first direction. In addition, the magnetization direction of the first driver 710 may be inclined with respect to the reference horizontal plane (R). In more detail, the magnetization direction of the first driver 710 may be between the first direction and the upper side direction. That is, the magnetization direction of the first driver 710 may be located on a plane formed by the first direction and the upper direction.

An angle θ1 between the magnetization direction of the first driver 710 and the reference horizontal plane R may be about −20 ° to about −70 °. In more detail, the angle θ1 between the magnetization direction of the first driver 710 and the reference horizontal plane R may be about −30 ° to about −50 °.

The second driver 720 is fixed to the housing 400. In more detail, the second driver 720 may be disposed inside one of the housing 400. Alternatively, the second driver 720 may be disposed on one outer side of the housing 400. The second driver 720 may be disposed on the first sidewall 410.

The second driver 720 faces the first driver 710. In addition, the second driver 720 is spaced apart from each other and opposed to the first driver 710. The second driver 720 may be parallel to the first driver 710. An interval d1 between the first driver 710 and the second driver 720 may be about 50 μm to about 1000 μm, more specifically, about 100 μm to about 500 μm.

The second driver 720 may include a coil. The second driver 720 may be formed of a coil. In this case, the coil of the second driving unit 720 may be formed by winding about an axis extending in the first direction. In addition, the coil of the second driver 720 may be electrically connected to the circuit board 800.

In the above description, the first driving unit 710 includes a magnetic material magnetized in an inclined direction, and the second driving unit 720 is described as including a coil. On the contrary, the second driving unit 720 is inclined. May include a magnetic material magnetized in a direction, and the first driver 710 may include a coil.

Repulsive force or attractive force may act between the first driver 710 and the second driver 720. The second driver 720 may apply repulsive force or attraction force to the first driver 710. In this case, it is a relative concept that the force is applied, and the second driver 720 applies the force to the first driver 710 so that the first driver 710 applies the force to the second driver 720. It is substantially the same as applying.

The second driver 720 may apply an attractive force or repulsive force to the first driver 710 in a direction inclined with respect to the reference horizontal plane R. FIG. In this case, the second driver 720 may apply a magnetic force to the first driver 710 at an angle of about + 20 ° to about + 70 ° with respect to the reference horizontal plane R. In more detail, the second driver 720 may apply a magnetic force to the first driver 710 at an angle of about + 30 ° to about + 50 ° with respect to the reference horizontal plane R.

In addition, the second driver 720 may apply a magnetic force to the first driver 710 simultaneously in the first direction and the object side direction. That is, the second driver 720 may apply a magnetic force to the first driver 710 laterally.

The third driver 730 is fixed to the lens barrel 100. In more detail, the third driver 730 is fixed to the other outer side of the lens barrel 100. In more detail, the third driver 730 may be attached to the other outer surface of the lens barrel 100. The third driver 730 may be attached to a central portion of the other outer surface of the lens barrel 100.

The third driver 730 may include a magnetic material. The third driver 730 may be made of a magnetic material. The third driving unit 730 may be iron oxide, cobalt ferrite or ferrite. The third driver 730 may have a plate shape. The third driver 730 may have a rectangular plate shape.

The magnetization direction of the third driver 730 may be inclined with respect to the optical axis OA. In addition, the magnetization direction of the third driver 730 may be inclined with respect to the second direction. In addition, the magnetization direction of the third driver 730 may be inclined with respect to the reference horizontal plane (R). In more detail, the magnetization direction of the third driver 730 may be between the second direction and the object side direction. That is, the magnetization direction of the third driver 730 may be located on a plane formed by the second direction and the object side direction.

An angle θ2 between the magnetization direction of the third driver 730 and the reference horizontal plane R may be about + 20 ° to about + 70 °. In more detail, the angle θ2 between the magnetization direction of the third driver 730 and the reference horizontal plane R may be about + 30 ° to about + 50 °.

The fourth driver 740 is fixed to the housing 400. In more detail, the fourth driving unit 740 may be disposed inside the housing 400. Alternatively, the fourth driver 740 may be disposed on the other outer side of the housing 400. The fourth driver 740 may be disposed on the second sidewall 420.

The fourth driver 740 faces the third driver 730. In addition, the fourth driver 740 is spaced apart from and opposed to the third driver 730. The fourth driver 740 may be parallel to the third driver 730. An interval d2 between the third driver 730 and the fourth driver 740 may be about 50 μm to about 1000 μm, more specifically, about 100 μm to about 500 μm.

The fourth driver 740 may include a coil. The fourth driver 740 may be formed of a coil. In this case, the coil of the fourth driving unit 740 may be formed by winding the axis extending in the second direction. In addition, the coil of the fourth driver 740 may be electrically connected to the circuit board 800.

In the above description, the third driving unit 730 includes a magnetic material magnetized in an inclined direction, and the fourth driving unit 740 includes a coil, but on the contrary, the fourth driving unit 740 is inclined. May include a magnetic material magnetized in a direction, and the third driver 730 may include a coil.

Repulsive force or attractive force may act between the third driver 730 and the fourth driver 740. The fourth driver 740 may apply repulsive force or attraction force to the third driver 730.

The fourth driving unit 740 may apply an attractive force or repulsive force to the third driving unit 730 in a direction inclined with respect to the reference horizontal plane R. In this case, the fourth driver 740 may apply a magnetic force to the third driver 730 at an angle of about −20 ° to about −70 ° with respect to the reference horizontal plane R. In detail, the fourth driving unit 740 may apply a magnetic force to the third driving unit 730 at an angle of about −30 ° to about −50 ° with respect to the reference horizontal plane R.

In addition, the fourth driver 740 may apply a magnetic force to the third driver 730 simultaneously in the second direction and the upward direction. That is, the fourth driver 740 may apply a magnetic force to the third driver 730 in the side downward.

The fifth driver 750 is fixed to the lens barrel 100. In more detail, the fifth driver 750 is fixed to another outer side of the lens barrel 100. In more detail, the fifth driver 750 may be attached to another outer surface of the lens barrel 100. The fifth driver 750 may be attached to a central portion of another outer surface of the lens barrel 100.

In addition, the fifth driver 750 is opposite to the first driver 710. The fifth driver 750 sandwiches the lens barrel 100 together with the first driver 710. That is, the first driver 710 and the fifth driver 750 face each other with the lens barrel 100 interposed therebetween.

The fifth driver 750 may include a magnetic material. The fifth driver 750 may be made of a magnetic material. The fifth driver 750 may include iron oxide, cobalt ferrite or ferrite. The fifth driver 750 may have a plate shape. The fifth driver 750 may have a rectangular plate shape.

The magnetization direction of the fifth driver 750 may be inclined with respect to the optical axis OA. In addition, the magnetization direction of the fifth driver 750 may be inclined with respect to the first direction. In addition, the magnetization direction of the fifth driving unit 750 may be inclined with respect to the reference horizontal plane (R). In more detail, the magnetization direction of the fifth driver 750 may be between the first direction and the upper direction. That is, the magnetization direction of the fifth driver 750 may be located on a plane formed by the first direction and the upper direction.

An angle θ3 between the magnetization direction of the fifth driving unit 750 and the reference horizontal plane R may be about −20 ° to about −70 °. In more detail, the angle θ3 between the magnetization direction of the fifth driver 750 and the reference horizontal plane R may be about −30 ° to about −50 °.

The sixth driver 760 is fixed to the housing 400. In more detail, the sixth driving part 760 may be disposed inside another of the housing 400. Alternatively, the sixth driving unit 760 may be disposed on the outer side of the housing 400. The sixth driver 760 may be disposed on the first sidewall 410.

The sixth driver 760 faces the fifth driver 750. In addition, the sixth driving unit 760 is spaced apart from and opposed to the fifth driving unit 750. The sixth driver 760 may be parallel to the fifth driver 750. An interval d3 between the fifth driver 750 and the sixth driver 760 may be about 50 μm to about 1000 μm, more specifically, about 100 μm to about 500 μm.

The sixth driver 760 may include a coil. The sixth driver 760 may be formed of a coil. In this case, the coil of the sixth driving unit 760 may be formed by winding about an axis extending in the first direction. In addition, the coil of the sixth driving unit 760 may be electrically connected to the circuit board 800.

In the above description, the fifth driving unit 750 includes a magnetic material magnetized in an inclined direction, and the sixth driving unit 760 includes a coil. However, the sixth driving unit 760 is inclined. May include a magnetic material magnetized in a direction, and the fifth driver 750 may include a coil.

Repulsive force or attractive force may act between the fifth driver 750 and the sixth driver 760. The sixth driver 760 may apply repulsive force or attraction to the fifth driver 750.

The sixth driver 760 may apply an attractive force or repulsive force to the fifth driver 750 in a direction inclined with respect to the reference horizontal plane R. In this case, the sixth driving unit 760 may apply a magnetic force to the fifth driving unit 750 at an angle of about + 20 ° to about + 70 ° with respect to the reference horizontal plane R. In detail, the sixth driving unit 760 may apply a magnetic force to the fifth driving unit 750 at an angle of about + 30 ° to about + 50 ° with respect to the reference horizontal plane R.

In addition, the sixth driver 760 may apply a magnetic force to the fifth driver 750 simultaneously in the first direction and the object side direction. That is, the sixth driver 760 may apply a magnetic force to the fifth driver 750 laterally.

The seventh driving part 770 is fixed to the lens barrel 100. In more detail, the seventh driving part 770 is fixed to another outer side of the lens barrel 100. In more detail, the seventh driving unit 770 may be attached to another outer surface of the lens barrel 100. The seventh driving unit 770 may be attached to a central portion of another outer surface of the lens barrel 100.

In addition, the seventh driving unit 770 is opposite to the third driving unit 730. The seventh driving unit 770 sandwiches the lens barrel 100 together with the third driving unit 730. That is, the third driver 730 and the seventh driver 770 face each other with the lens barrel 100 interposed therebetween.

The seventh driving unit 770 may include a magnetic material. The seventh driving unit 770 may be made of a magnetic material. The seventh driving unit 770 may include iron oxide, cobalt ferrite or ferrite. The seventh driving part 770 may have a plate shape. The seventh driving part 770 may have a rectangular plate shape.

The magnetization direction of the seventh driver 770 may be inclined with respect to the optical axis OA. In addition, the magnetization direction of the seventh driving unit 770 may be inclined with respect to the second direction. In addition, the magnetization direction of the seventh driving unit 770 may be inclined with respect to the reference horizontal plane (R). In more detail, the magnetization direction of the seventh driver 770 may be between the second direction and the object side direction. That is, the magnetization direction of the seventh driving unit 770 may be located on a plane formed by the second direction and the object side direction.

An angle θ4 between the magnetization direction of the seventh driving unit 770 and the reference horizontal plane R may be about + 20 ° to about + 70 °. In more detail, the angle θ4 between the magnetization direction of the seventh driving unit 770 and the reference horizontal plane R may be about + 30 ° to about + 50 °.

The eighth driver 780 is fixed to the housing 400. In more detail, the eighth driving part 780 may be disposed at another inner side of the housing 400. Unlike this, the eighth driving part 780 may be disposed at another outer side of the housing 400. The eighth driver 780 may be disposed on the second sidewall 420.

The eighth driver 780 faces the seventh driver 770. In addition, the eighth driving unit 780 is spaced apart from and opposed to the seventh driving unit 770. The eighth driver 780 may be parallel to the seventh driver 770. An interval d4 between the seventh driver 770 and the eighth driver 780 may be about 50 μm to about 1000 μm, more specifically, about 100 μm to about 500 μm.

The eighth driver 780 may include a coil. The eighth driver 780 may be formed of a coil. In this case, the coil of the eighth driving unit 780 may be formed by winding the axis extending in the second direction. In addition, the coil of the eighth driving unit 780 may be electrically connected to the circuit board 800.

In the above description, the seventh driving unit 770 includes a magnetic material magnetized in an inclined direction, and the eighth driving unit 780 includes a coil. On the contrary, the eighth driving unit 780 is inclined. May include a magnetic material magnetized in a direction, and the seventh driving part 770 may include a coil.

Repulsive force or attractive force may act between the seventh driver 770 and the eighth driver 780. The eighth driver 780 may apply repulsive force or attractive force to the seventh driver 770.

The eighth driver 780 may apply an attractive force or a repulsive force to the seventh driver 770 in a direction inclined with respect to the reference horizontal plane R. FIG. In this case, the eighth driving unit 780 may apply a magnetic force to the seventh driving unit 770 at an angle of about −20 ° to about −70 ° with respect to the reference horizontal plane R. In more detail, the eighth driver 780 may apply a magnetic force to the seventh driver 770 at an angle of about −30 ° to about −50 ° with respect to the reference horizontal plane R.

In addition, the eighth driver 780 may apply a magnetic force to the seventh driver 770 simultaneously in the second direction and the upper direction. That is, the eighth driver 780 may apply a magnetic force to the seventh driver 770 in the side downward.

The elastic member 300 may have elasticity with respect to the object side direction, the image side direction, the first direction, and the second direction. That is, the elastic member 300 may have an elastic modulus with respect to the object side direction, the image side direction, the first direction, and the second direction, respectively. Accordingly, the lens barrel 100 may be moved by the elastic member 300 in the object side direction, the image side direction, the first direction, and the second direction, and then restored.

The camera module according to the embodiment may be driven by the following method.

First, when the camera module according to the embodiment shakes, the shake is sensed by the shake detection sensor. In this case, in response to the sensed shaking, the driving units 710, 720... Move the lens barrel 100 according to the signal of the controller.

In this case, the voltages applied to the second driver 720 and the sixth driver 760 may be adjusted so that the first direction component may be corrected during the shaking. In addition, the voltages applied to the fourth driver 740 and the eighth driver 780 may be adjusted to compensate for the second direction component during the shaking.

For example, when the subject is moved in the first direction by shaking, the first driving unit 710, the second driving unit 720, the fifth driving unit 750, and the sixth driving unit 760. As a result, the lens barrel 100 may be tilted in a direction in which the subject moves.

In addition, when the subject is moved in the second direction due to shaking, by the third driving unit 730, the fourth driving unit 740, the seventh driving unit 770, and the eighth driving unit 780, The lens barrel 100 may be tilted in a direction in which the subject moves.

In addition, the camera module according to the embodiment may automatically adjust the focus of the lens assembly 200. That is, the camera module according to the embodiment applies the repulsive force to the first driving unit 710, the second driving unit 720, the fifth driving unit 750 and the sixth driving unit 760, respectively, the lens assembly ( The distance between the sensor 200 and the sensor 600 may be increased.

In addition, the camera module according to the embodiment applies the repulsive force to the third driving unit 730, the fourth driving unit 740, the seventh driving unit 770 and the eighth driving unit 780, respectively, the lens assembly The distance between the sensor 200 and the sensor unit 600 may be reduced.

As described above, the camera module according to the embodiment may incline the magnetization direction and perform shake correction and focus adjustment by using eight drivers 710 and 720.

As described above, the camera module according to the embodiment may compensate for shaking by driving the lens barrel 100 with respect to the housing 400. That is, the driving units 710 and 720 may move the lens barrel 100 relative to the housing 400 to compensate for shaking.

In particular, the camera module according to the embodiment moves the lens barrel 100 by applying a magnetic force to a direction inclined with respect to the reference horizontal plane (R). Accordingly, the camera module according to the embodiment may move the lens barrel 100 in three axis directions. Accordingly, the camera module according to the embodiment can correct the left and right shake, and at the same time, adjust the focus.

Accordingly, the camera module according to the embodiment can perform various functions using fewer components, and can reduce the size as a whole.

9 is a cross-sectional view illustrating a longitudinal cross section of a camera module according to another exemplary embodiment. 10 is a view showing a portion of a driving unit according to another embodiment. 11 is a view showing a portion of a driving unit according to another embodiment. In this embodiment, reference is made to a camera module according to the previous embodiment. That is, the description of the camera module in the foregoing embodiment may be essentially combined with the description of the camera module in the present embodiment, except for the changed part.

9 to 11, the first driving unit 710, the third driving unit 730, the fifth driving unit 750, and the seventh driving unit 770 include coils, and the second driving unit 720, the first driving unit 710. The fourth driver 740, the sixth driver 760, and the eighth driver 780 may include a magnetic material.

In this case, the second driver 720, the fourth driver 740, the sixth driver 760, and the eighth driver 780 may be made of a magnetic material. The second driver 720, the fourth driver 740, the sixth driver 760, and the eighth driver 780 may include iron oxide, cobalt ferrite or ferrite. The second driver 720, the fourth driver 740, the sixth driver 760, and the eighth driver 780 may have a plate shape. The second driver 720, the fourth driver 740, the sixth driver 760, and the eighth driver 780 may have a rectangular plate shape.

The magnetization directions of the second driver 720 and the sixth driver 760 may be inclined with respect to the optical axis OA. In addition, the magnetization directions of the second driver 720 and the sixth driver 760 may be inclined with respect to the first direction. In addition, the magnetization directions of the second driver 720 and the sixth driver 760 may be inclined with respect to the reference horizontal plane R. FIG. In more detail, the magnetization directions of the second driver 720 and the sixth driver 760 may be between the first direction and the upper direction. That is, the magnetization directions of the second driver 720 and the sixth driver 760 may be located on a plane formed by the first direction and the upper direction.

An angle θ1 between the magnetization direction of the second driver 720 and the sixth driver 760 and the reference horizontal plane R may be about −20 ° to about −70 °. In more detail, the angle θ1 between the magnetization direction of the second driver 720 and the sixth driver 760 and the reference horizontal plane R may be about −30 ° to about −50 °.

Accordingly, the first driver 710 and the fifth driver 750 are inclined with respect to the reference horizontal plane R, respectively, to the second driver 720 and the sixth driver 760. In this case, it can apply manpower or repulsive force. In this case, the first driving unit 710 and the fifth driving unit 750 are each at an angle of about + 20 ° to about + 70 ° with respect to the reference horizontal plane R, and the second driving unit 720 and the first driving unit 710. Magnetic force can be applied to each of the six driving units 760, respectively. In more detail, the first driving unit 710 and the fifth driving unit 750 are about + 30 ° to about + 50 ° with respect to the reference horizontal plane R, and the second driving unit 720 and the A magnetic force can be applied to the sixth driver 760, respectively.

The magnetization directions of the fourth driver 740 and the eighth driver 780 may be inclined with respect to the optical axis OA. In addition, the magnetization directions of the fourth driver 740 and the eighth driver 780 may be inclined with respect to the second direction. In addition, the magnetization directions of the fourth driver 740 and the eighth driver 780 may be inclined with respect to the reference horizontal plane R. In more detail, the magnetization directions of the fourth driver 740 and the eighth driver 780 may be between the second direction and the object side direction. That is, the magnetization directions of the fourth driver 740 and the eighth driver 780 may be located on a plane formed by the second direction and the object side direction.

An angle θ1 between the magnetization direction of the fourth driver 740 and the eighth driver 780 and the reference horizontal plane R may be about + 20 ° to about + 70 °. In more detail, the angle θ1 between the magnetization direction of the fourth driving unit 740 and the eighth driving unit 780 and the reference horizontal plane R may be about + 30 ° to about + 50 °.

Accordingly, the third driving part 730 and the seventh driving part 770 are inclined with respect to the reference horizontal plane R, respectively, to the fourth driving part 740 and the eighth driving part 780. At the same time, it may apply manpower or repulsive force. In this case, the third driving unit 730 and the seventh driving unit 770 may be formed at an angle of about −20 ° to about −70 ° with respect to the reference horizontal plane R, and the fourth driving unit 740 and the fourth driving unit 730. 8 The magnetic force can be applied to the drive part 780, respectively. In detail, the third driving unit 730 and the seventh driving unit 770 may be formed at an angle of about −30 ° to about −50 ° with respect to the reference horizontal plane R, and the fourth driving unit 740 and the A magnetic force can be applied to the eighth drive unit 780, respectively.

The camera module according to the present embodiment moves the lens barrel 100 by applying a magnetic force or the like in a direction inclined with respect to the reference horizontal plane (R). Accordingly, the camera module according to the embodiment may move the lens barrel 100 in three axis directions. Accordingly, the camera module according to the embodiment can correct the left and right shake, and at the same time, adjust the focus.

Accordingly, the camera module according to the embodiment can perform various functions using fewer components, and can reduce the size as a whole.

12 is a cross-sectional view illustrating a longitudinal cross section of a camera module according to another embodiment. 13 is a view showing a portion of a driving unit according to another embodiment. 14 is a view showing a portion of a driving unit according to another embodiment. In this embodiment, reference is made to a camera module according to the previous embodiment. That is, the description of the camera module in the foregoing embodiment may be essentially combined with the description of the camera module in the present embodiment, except for the changed part.

12 to 14, the first driving unit 710, the third driving unit 730, the fifth driving unit 750, and the seventh driving unit 770 are respectively the second driving unit 720 and the fourth driving unit 740. ) And the sixth driver 760 and the eighth driver 780 are disposed to be offset from each other.

The center C1 of the second driver 720 is closer to the upper side than the center of the first driver 710. That is, the center C1 of the second driver 720 is disposed at a lower position than the reference horizontal plane R. Accordingly, the second driver 720 may apply repulsive force or attraction force to the first driver 710 in the object side direction and the first direction, regardless of the magnetization direction of the first driver 710. .

For example, the second driver 720 may be positioned at the angle of about + 20 ° to about + 70 ° with respect to the reference horizontal plane R at the first driver 710. Magnetic force can be applied, respectively. In more detail, the second driver 720 may apply a magnetic force to the first driver 710 at an angle of about + 30 ° to about + 50 ° with respect to the reference horizontal plane R, respectively. .

The center C3 of the sixth driver 760 is closer to the upper side than the center of the fifth driver 750. That is, the center C3 of the sixth driver 760 is disposed at a lower position than the reference horizontal plane R. Accordingly, the sixth driver 760 may apply a repulsive force or attraction force to the fifth driver 750 in the object side direction and the first direction, regardless of the magnetization direction of the fifth driver 750. .

For example, the sixth driving unit 760 may be disposed at the sixth driving unit 760 at an angle of about + 20 ° to about + 70 ° with respect to the reference horizontal plane R in the fifth driving unit 750. Magnetic force can be applied, respectively. In more detail, the sixth driving unit 760 may apply a magnetic force to the fifth driving unit 750 at an angle of about + 30 ° to about + 50 ° with respect to the reference horizontal plane R, respectively. .

The center C2 of the fourth driver 740 is closer to the object side than the center of the third driver 730. That is, the center C2 of the fourth driver 740 is disposed at a position higher than the reference horizontal plane R. Accordingly, the fourth driver 740 may apply a repulsive force or attraction force to the third driver 730 in the upper direction and the second direction, regardless of the magnetization direction of the third driver 730. .

For example, the fourth driver 740 may be disposed at the angle of about −20 ° to about −70 ° with respect to the reference horizontal plane R at the third driver 730. Magnetic force can be applied, respectively. In detail, the fourth driving unit 740 may apply a magnetic force to the third driving unit 730 at an angle of about −30 ° to about −50 ° with respect to the reference horizontal plane R, respectively. .

The center C4 of the eighth driver 780 is closer to the object side than the center of the seventh driver 770. That is, the center C4 of the eighth driving part 780 is disposed at a position higher than the reference horizontal plane R. Accordingly, the eighth driver 780 may apply a repulsive force or attractive force to the seventh driver 770 in the upward direction and the second direction, regardless of the magnetization direction of the seventh driver 770. .

For example, the eighth driver 780 may be disposed at the angle of about −20 ° to about −70 ° with respect to the reference horizontal plane R at the seventh driver 770. Magnetic force can be applied, respectively. In more detail, the eighth driver 780 may apply a magnetic force to the seventh driver 770 at an angle of about −30 ° to about −50 ° with respect to the reference horizontal plane R, respectively. .

As described above, the camera module according to the present exemplary embodiment may be formed in three axis directions regardless of the magnetization directions of the first driver 710, the third driver 730, the fifth driver 750, and the seventh driver 770. The lens barrel 100 may be moved. Accordingly, the camera module according to the embodiment can correct the left and right shake, and at the same time, adjust the focus.

Accordingly, the camera module according to the embodiment can perform various functions using fewer components, and can reduce the size as a whole.

In addition, the features, structures, effects and the like described in the embodiments are included in at least one embodiment of the present invention, and are not necessarily limited to only one embodiment. Furthermore, the features, structures, effects and the like illustrated in the embodiments can be combined and modified by other persons skilled in the art to which the embodiments belong. Therefore, it should be understood that the present invention is not limited to these combinations and modifications.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood that various modifications and applications are possible. For example, each component specifically shown in the embodiments can be modified and implemented. It is to be understood that all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims (21)

A lens barrel disposed within the housing and containing the lens; And
A driving unit for moving the lens barrel relative to the housing,
The driving unit
A first driver formed in the lens barrel; And
A second driving part formed in the housing,
And the first driving unit applies attraction or repulsive force to the second driving unit in a direction inclined with respect to a reference horizontal plane perpendicular to the optical axis of the lens. The camera module of claim 1, wherein the first driving unit applies a magnetic force to the second driving unit. The camera module of claim 2, wherein the magnetization direction of the first driver is inclined with respect to the reference horizontal plane. The camera module of claim 1, wherein the second driving unit applies a magnetic force to the first driving unit in a direction inclined with respect to the reference horizontal plane. The camera module of claim 1, wherein the first driver is disposed between the lens barrel and the second driver. The camera module of claim 5, wherein the first driver and the second driver are spaced apart from each other at intervals of 50 μm to 1000 μm. The camera module of claim 1, wherein an angle between a direction in which the second driving unit applies attraction or repulsive force to the first driving unit and the reference horizontal plane is 20 ° to 70 °. housing;
A lens barrel disposed within the housing and containing one or more lenses;
An elastic member formed in the housing and the lens barrel; And
A first driver formed on one surface of the lens barrel; And
And a second driving part formed on one surface of the housing and applying a magnetic force to the first driving part. 9. The apparatus of claim 8, further comprising: a third driver formed on the other surface of the lens barrel; And
And a fourth driving unit formed on the other surface of the housing and applying magnetic force to the third driving unit. 10. The display device of claim 9, further comprising: a fifth driving unit sandwiching the lens barrel together with the first driving unit and formed on another surface of the lens barrel; And
And a sixth driving unit formed on another surface of the housing and applying magnetic force to the fifth driving unit. 11. The apparatus of claim 10, further comprising: a seventh driving unit sandwiching the lens barrel together with the third driving unit and formed on another surface of the lens barrel; And
And an eighth driving part formed on another surface of the housing and applying magnetic force to the seventh driving part. The apparatus of claim 9, wherein a reference horizontal plane perpendicular to the optical axis of the lens and passing through the center of the first driving unit is defined.
The second driving unit applies a magnetic force in the object side direction with respect to the first driving unit,
The fourth driving unit is a camera module for applying a magnetic force in an upward direction with respect to the third driving unit. 12. The apparatus of claim 11, wherein a reference horizontal plane perpendicular to the optical axis of the lens and passing through the center of the first driver is defined.
The second driving unit applies a magnetic force in the object side direction with respect to the first driving unit,
The fourth driving unit applies a magnetic force in an upward direction with respect to the third driving unit,
The sixth driving unit applies a magnetic force in an object side direction with respect to the fifth driving unit,
The eighth driving unit applies a magnetic force in an upward direction with respect to the seventh driving unit. 12. The apparatus of claim 11, wherein a reference horizontal plane perpendicular to the optical axis of the lens and passing through the center of the first driver is defined.
The object side direction of the magnetic force with respect to the reference horizontal plane is defined as a positive angle,
The upward direction of the magnetic force with respect to the reference horizontal plane is defined as a negative angle,
The second driving unit applies a magnetic force in a direction inclined to +20 ° to +70 ° with respect to the first driving unit,
The fourth driving unit is a camera module for applying a magnetic force in a direction inclined to -20 ° to -70 ° with respect to the third driving unit. The method of claim 8, wherein the first drive unit comprises a magnetic material,
The magnetization direction of the first driving unit is a direction inclined with respect to the optical axis of the lens. housing;
A lens barrel disposed within the housing and containing one or more lenses;
An elastic member fixed to the housing and the lens barrel; And
A driving unit for moving the lens barrel relative to the housing,
The driving unit includes a magnetic body magnetized in a direction inclined with respect to the optical axis of the lens. The camera module of claim 16, wherein the magnetic material is fixed to the lens barrel. The camera module of claim 16, wherein the magnetic material is fixed to the housing. The camera module of claim 16, wherein the driving unit comprises a coil facing the magnetic material. The camera module of claim 1, wherein a center of the first driver is closer to an object side than a center of the second driver. The camera module of claim 1, wherein a center of the second driver is closer to an object side than a center of the first driver.

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