KR102069631B1 - Camera module - Google Patents

Abstract

The present invention relates to a camera module, comprising: a housing accommodating a lens module; And an aperture module coupled to an upper portion of the lens module, wherein the aperture module includes: a base fixed to an upper portion of the lens module and including a protrusion extending along an outer side of the lens module in an optical axis direction; At least one plate provided on an upper portion of the base and having an entrance hole to change an amount of light incident on the lens module; And a magnet part movable in a direction perpendicular to the optical axis direction and having a driving magnet, wherein the housing may include a coil for driving the aperture module by interacting with the magnet.

Description

Camera module

The present invention relates to a camera module.

Recently, camera modules are basically employed in portable electronic devices such as smartphones, tablet PCs, and notebook computers. In general, a digital camera has a mechanical aperture to change an incident amount of light according to a shooting environment, but a camera module used for a small product such as a portable electronic device has a separate aperture due to structural features and space limitations. Difficult to do

For example, the weight of the camera module may be heavy due to various components for driving the aperture, thereby degrading the auto focus function. In addition, when the aperture itself is provided with a power connection part such as a coil for driving the aperture, a problem may occur such that the power connection part is caught by the vertical movement of the lens during auto focus adjustment.

An object according to an embodiment of the present invention is to provide a camera module configured to selectively change the incident amount of light through the aperture module, and to not degrade the performance of the auto focusing function even when the aperture module is mounted.

In addition, to provide a camera module that can minimize the increase in weight due to the adoption of the aperture module.

The present invention relates to a camera module, comprising: a housing accommodating a lens module; And an aperture module coupled to an upper portion of the lens module, wherein the aperture module includes: a base fixed to an upper portion of the lens module and including a protrusion extending along an outer side of the lens module in an optical axis direction; At least one plate provided on an upper portion of the base and having an entrance hole to change an amount of light incident on the lens module; And a magnet part movable in a direction perpendicular to the optical axis direction and having a driving magnet, wherein the housing may include a coil for driving the aperture module by interacting with the magnet.

The camera module according to an embodiment of the present invention may maintain the performance of the auto focus and image stabilization function by minimizing the weight increase of the driving unit even when the aperture module is mounted.

1 is a perspective view of a camera module according to an embodiment of the present invention,
2 is an exploded perspective view of a camera module according to an embodiment of the present invention;
3A is a partial perspective view of a camera module according to an embodiment of the present invention;
3B is a side view of FIG. 3A,
4 is an exploded perspective view of an aperture module according to an embodiment of the present invention;
5 is a plan view of the first plate provided in the aperture module;
6 is a plan view of a second plate provided in the aperture module;
7a and 7b is a plan view showing a state that the aperture module is driven to change the diameter of the incident hole,
8 is a perspective view of an aperture module according to an embodiment of the present invention;
9 is an exploded perspective view of a base and a magnet of an aperture module according to an embodiment of the present invention;
10a and 10b is a side view of the aperture module according to an embodiment of the present invention,
11 is a perspective view of a magnet according to another embodiment of the present invention;
12A to 12D are reference views illustrating various positional relations between a first yoke and a magnet, according to an exemplary embodiment.
12E is a reference diagram illustrating a positional relationship between a holding yoke and a magnet, according to an exemplary embodiment.

Hereinafter, with reference to the drawings will be described an embodiment of the present invention; However, the spirit of the present invention is not limited to the embodiments presented.

For example, those skilled in the art that understand the spirit of the present invention may suggest other embodiments that fall within the spirit of the present invention through the addition, modification, or deletion of the elements. It is said to be included in the range.

Camera module according to an embodiment of the present invention can be mounted on a portable electronic device, such as a mobile communication terminal, a smart phone, a tablet PC.

1 is a perspective view of a camera module according to an embodiment of the present invention, Figure 2 is an exploded perspective view of the camera module according to an embodiment of the present invention.

3A is a perspective view of a part of a camera module according to an embodiment of the present invention, and FIG. 3B is a side view of FIG. 3A.

1 to 3B, the camera module 1000 according to an embodiment of the present invention includes a lens module 200, a carrier 300, a guide part 400, an aperture module 500, and a housing 110. And a case 120.

The lens module 200 may include a lens barrel 210 including a plurality of lenses for photographing a subject, and a holder 220 to accommodate the lens barrel 210. The plurality of lenses is disposed inside the lens barrel 210 along the optical axis. The lens module 200 is accommodated in the carrier 300.

The lens module 200 is configured to be movable in the optical axis direction for focus adjustment. For example, the lens module 200 may be moved along the carrier 300 in the optical axis direction by the focus adjuster.

The focus controller includes a magnet 710 and a coil 730 that generate a driving force in the optical axis direction. In addition, a position sensor 750, for example, a hall sensor, may be provided to sense the position of the lens module 200, that is, the optical axis in the carrier 300.

The magnet 710 is mounted to the carrier 300. For example, the magnet 710 may be mounted on one surface of the carrier 300.

The coil 730 and the position sensor 750 are mounted to the housing 110. For example, the coil 730 and the position sensor 750 may be fixed to the housing 110 to face the magnet 710. The coil 730 and the position sensor 750 may be provided on the substrate 900, and the substrate 900 may be mounted on the housing 110.

The magnet 710 is a moving member mounted to the carrier 300 to move in the optical axis direction together with the carrier 300, and the coil 730 and the position sensor 750 are fixed members fixed to the housing 110.

When power is applied to the coil 730, the carrier 300 may be moved in the optical axis direction by the electromagnetic influence between the magnet 710 and the coil 730. The position sensor 750 may sense the position in the optical axis direction of the carrier 300.

Since the lens module 200 is accommodated in the carrier 300, the lens module 200 is also moved along the carrier 300 in the optical axis direction by the movement of the carrier 300.

When the carrier 300 is moved, a rolling member B is disposed between the carrier 300 and the housing 110 to reduce friction between the carrier 300 and the housing 110. The rolling member B may have a ball shape.

The rolling member B is disposed on both sides of the magnet 710 (or coil 730).

A yoke may be mounted on the substrate 900. For example, the yoke may be disposed to face the magnet 710 with the coil 730 interposed therebetween.

The attractive force acts in the direction perpendicular to the optical axis direction between the yoke and the magnet 710.

Therefore, the rolling member B may be in contact with the carrier 300 and the housing 110 by the attraction force between the yoke and the magnet 710.

In addition, the yoke also functions to focus the magnetic force of the magnet 710. This can prevent the leakage magnetic flux from occurring.

For example, the yoke and the magnet 710 form a magnetic circuit.

On the other hand, in order to correct the shaking of the image due to the user's hand shake, the lens module 200 may be moved in a first direction perpendicular to the optical axis, and a second direction perpendicular to the optical axis and the first direction.

For example, the shake correction unit compensates for the shake by applying a relative displacement corresponding to the shake to the lens module 200 when a shake occurs during image capturing by a user's hand shake.

The guide part 400 is accommodated in the carrier 300 so as to be mounted on the upper portion in the optical axis direction. The holder 220 is mounted on the guide part 400. The ball member C serving as a rolling bearing may be provided between the carrier 300 and the optical axis direction of the guide part 400 and between the guide part 400 and the optical axis direction of the holder 220.

When the lens module 200 is moved in the first direction and the second direction perpendicular to the optical axis, the guide part 400 is configured to guide the lens module 200.

For example, the lens module 200 moves relative to the guide unit 400 in the first direction, and the guide unit 400 and the lens module 200 are configured to move together in the second direction in the carrier 300. Can be.

The shake correction unit includes a plurality of magnets 810a and 830a and a plurality of coils 810b and 830b that generate a driving force for shake correction. In addition, a plurality of position sensors 810c and 830c, for example, a hall sensor, may be provided to sense the positions of the first and second directions of the lens module 200.

Among the plurality of magnets 810a and 830a and the plurality of coils 810b and 830b, some of the magnets 810a and some of the coils 810b are disposed to face each other in the first direction to generate a driving force in the first direction. The remaining magnets 830a and the remaining coils 830b are disposed to face each other in the second direction to generate a driving force in the second direction.

The plurality of magnets 810a and 830a may be mounted on the lens module 200, and the plurality of coils 810b and 830b facing the plurality of magnets 810a and 830a and the plurality of position sensors 810c and 830c may include a housing ( 110). For example, the plurality of coils 810b and 830b and the plurality of position sensors 810c and 830c are provided in the substrate 900, and the substrate 900 is mounted in the housing 110.

The plurality of magnets 810a and 830a are moving members that move in the first direction and the second direction together with the lens module 200, and the plurality of coils 810b and 830b and the plurality of position sensors 810c and 830c are housings. It is a fixed member fixed to (110).

On the other hand, the present invention is provided with a ball member (c) for supporting the guide portion 400 and the lens module 200. The ball member c serves to guide the guide part 400 and the lens module 200 in the shake correction process.

The ball member c may be provided between the carrier 300 and the guide part 400, between the carrier 300 and the lens module 200, and between the guide part 400 and the lens module 200.

When the driving force in the first direction occurs, the ball member (c) disposed between the carrier 300 and the guide portion 400, and between the carrier 300 and the lens module 200 is rolling motion in the first direction. do. Accordingly, the ball member c guides the movement of the guide part 400 and the lens module 200 in the first direction.

In addition, when the driving force in the second direction occurs, the ball member c disposed between the guide portion 400 and the lens module 200 and between the carrier 300 and the lens module 200 is the second direction. Cloud movement. Accordingly, the ball member c guides the movement of the lens module 200 in the second direction.

The lens module 200 and the carrier 300 are accommodated in the housing 110. For example, the housing 110 has an open top and bottom shape, and the lens module 200 and the carrier 300 are accommodated in the inner space of the housing 110.

A printed circuit board on which an image sensor is mounted may be disposed below the housing 110.

The case 120 is coupled to the housing 110 to surround the outer surface of the housing 110, and serves to protect the internal components of the camera module. In addition, the case 120 may function to shield electromagnetic waves.

For example, the case 120 may shield the electromagnetic waves so that the electromagnetic waves generated from the camera module do not affect other electronic components in the portable electronic device.

In addition, since the portable electronic device is equipped with various electronic components in addition to the camera module, the case 120 may shield the electromagnetic waves so that electromagnetic waves generated from the electronic components do not affect the camera module.

The case 120 may be provided with a metal material and grounded to a ground pad provided in the printed circuit board, thereby shielding electromagnetic waves.

The aperture module 500 is a device configured to selectively change the incident amount of light incident on the lens module 200.

For example, the aperture module 500 may be provided with a plurality of incident holes having different sizes. Light may be incident through any one of the plurality of incident holes according to the photographing environment.

4 is an exploded perspective view of an aperture module according to an embodiment of the present invention, FIG. 5 is a plan view of a first plate provided in the aperture module, and FIG. 6 is a plan view of a second plate provided in the aperture module. 7A and 7B are plan views of the diaphragm module showing how the diameter of an incident hole into which light is incident changes. In addition, Figure 8 is a perspective view of the aperture module according to an embodiment of the present invention, Figure 9 is an exploded perspective view of the base and the magnet of the aperture module according to an embodiment of the present invention, Figure 10 is an embodiment of the present invention Side view of the aperture module according to.

The aperture module 500 is coupled to the lens module 200 and configured to selectively change the incident amount of light incident on the lens module 200.

In a high illuminance environment, a relatively small amount of light may be incident on the lens module 200. In a low illuminance environment, a relatively large amount of light may be incident on the lens module 200. Can keep the quality of

The aperture module 500 is coupled to the lens module 200 and configured to be movable along the lens module 200 in the optical axis direction, the first direction, and the second direction. That is, the lens module 200 and the aperture module 500 move together during focusing and shake correction so that the distance between them does not change.

Referring to FIG. 4, the aperture module 500 includes a base 510, a first plate 530, a second plate 540, and an aperture driver (including a magnet 520 and a coil 521b). In addition, the cover 550 may include a cover 550 that covers the base 510, the first plate 530, and the second plate 540 and includes a through hole 551 through which light is incident.

5 and 6, a first through hole 531 is provided in the first plate 530, and a second through hole 541 is provided in the second plate 540. In addition, since the first plate 530 and the second plate 540 slide in contact with each other, the first plate 530 and the second plate 540 may be antistatically treated so as not to generate triboelectricity.

In addition, a first guide hole 533 and a third guide hole 535 are provided in the first plate 530, and a second guide hole 543 and a fourth guide hole 545 are provided in the second plate 540. Is provided.

The first guide hole 533 and the second guide hole 543 are provided in a round shape, and the third guide hole 535 and the fourth guide hole 545 are provided to be inclined in one direction in a long shape in one direction. Can be. The inclined directions of the third guide hole 535 and the fourth guide hole 545 may be opposite to each other.

The first through hole 531 and the second through hole 541 may have a shape in which a plurality of through holes 531a and 531b and 541a and 541b having different diameters are connected to each other. The first through hole 531 and the second through hole 541 may have a shape in which the relatively large through holes 531a and 541a and the relatively small through holes 531b and 541b are connected to each other. For example, the first through hole 531 may have a squirrel (or locust) shape as a whole, and the through holes 531 a, 531 b, 541 a, and 541 b may have a round shape or a polygonal shape.

In addition, the shapes of the first through hole 531 and the second through hole 541 may be opposite to each other. That is, the first plate 530 and the second plate 540 may move the first protrusion 513 in a state in which both the first guide hole 533 and the second guide hole 543 are fitted into the first protrusion 513. The rotational movement is performed in the central axis. In consideration of this, the first through hole 531 and the second through hole 541 may be provided in a symmetrical shape in the circumferential direction.

The first plate 530 and the second plate 540 are coupled to the base 510 such that portions of the first plate 530 and the second plate 540 overlap each other, and are configured to be movable by the aperture driver. For example, the first plate 530 and the second plate 540 may be configured to be rotatable in opposite directions.

In addition, a portion of the first through hole 531 and the second through hole 541 may be configured to overlap each other in the optical axis direction. A portion of the first through hole 531 and the second through hole 541 may overlap each other in the optical axis direction to form an incident hole through which light passes.

A portion of the first through hole 531 and the second through hole 541 may overlap to form a plurality of incident holes having different diameters. For example, a portion of the first through hole 531 and the second through hole 541 may overlap to form an incident hole having a relatively large diameter. The first through hole 531 and the second through hole 541 may be formed. ) May overlap to form an entrance hole having a relatively small diameter (the entrance hole may have a round shape or a polygonal shape according to the shape of the first through hole 531 and the second through hole 541). ).

Accordingly, light may be incident through one of the plurality of incident holes according to the photographing environment.

Referring to FIG. 7A, the first plate 530 and the second plate 540 are rotated around the first protrusion 513 by the aperture driving unit, and the first through hole 531 and the second through hole are rotated. A portion of the 541 may overlap each other to form an entrance hole having a relatively large diameter.

Referring to FIG. 7B, the first plate 530 and the second plate 540 are rotated about the first protrusion 513 by the aperture driving unit, and the first through hole 531 and the second through hole are rotated. Portions of 541 may overlap each other to form an entrance hole having a relatively small diameter.

8 to 10, the aperture driver is fixed to the housing 110 so as to face the magnet 520 and the magnet 520 disposed on the base 510 so as to be movable along one axis. It includes.

The coil 521b is provided on the substrate 900, and the substrate 900 is fixed to the housing 110. The substrate 900 may be electrically connected to a printed circuit board attached to the bottom of the camera module 1000.

The magnet 520 is a moving member that moves in the optical axis direction, the first direction, and the second direction together with the base 510, and the coil 521b is a fixing member fixed to the housing 110.

Since the coil 521b for providing the driving force to the aperture module 500 is disposed outside the aperture module 500, that is, the housing 110 of the camera module, the weight of the aperture module 500 may be reduced.

In other words, since the coil 521b that provides the driving force to the aperture module 500 is provided as a fixing member, the coil 521b does not move during the auto focus adjustment or the image stabilization driving, and accordingly, the aperture module 500 Increasing the weight of the lens module 200 according to the adoption of can be minimized.

In addition, since the coil 521b for providing the driving force to the aperture module 500 is disposed in the housing 110 which is a fixed member and electrically connected to the printed circuit board 600, the lens module (when autofocusing and shaking correction is performed). Even if the 200 and the aperture module 500 move, the aperture 510b does not affect the coil 521b.

Therefore, the auto focus adjustment function can be prevented from deteriorating.

The base 510 is provided with a protrusion 512 in which the magnet 520 is disposed. The protrusion 512 may have a shape extending from the base 510 in the optical axis direction.

The magnet part 520 includes a magnet 521a disposed to face the coil 521b and a magnet holder 522 to which the magnet 521a is attached. The magnet 521a is provided to face the coil 521b in a direction perpendicular to the optical axis direction.

The magnet 520 is coupled to the protrusion 512 of the base 510. In addition, the holder 220 of the lens module 200 may be provided with a first yoke 225 at a position opposite to the magnet part 520. The magnet 520 may slide while maintaining the state in which the magnet 520 is in close contact with the protrusion 512 by the attraction force between the first yoke 225 and the magnet 521a.

Meanwhile, referring to FIG. 10B, the first yoke 225 may be provided in the base 510. For example, in the base 510 or the protrusion 512 protruding from the base 510, the first yoke 225 is provided to face the magnet 520, and the magnet 521a is provided in the magnet 520. The magnet 520 may be supported in close contact with the protrusion 512 by the attraction force with the first yoke 225.

In addition, the magnet 520 according to the present exemplary embodiment may move in a direction perpendicular to the optical axis direction, and change the size of the incident hole by the movement of the first and second plates 530 and 540. Thus, when the magnet 520 moves to one end of the protrusion 512 in a direction perpendicular to the optical axis direction, the size of the incident hole is changed to be large or small, and in this state, the magnet 520 is the protrusion 512. It should remain fixed at one end of the.

Thus, in the present embodiment, the positional relationship between the first yoke and the magnet according to FIGS. 12A to 12D is implemented to maintain the magnet part 520 fixed to one end of the protrusion 512.

Referring to FIG. 12A, two first yokes 225 may be provided 225a and 225b at both sides in a direction in which the magnet 520 moves. In addition, before the driving force is applied to the magnet part 520, the magnets 521a may be disposed in the center of the first yokes 225a and 225b provided in two. When the power is supplied to the coil 521b, the magnet part 520 moves to one end of the protruding part 512 by the interaction with the magnet 521a. In this state, the two first yokes 225a and 225b are provided. Since it is in a state closer to any one of, the attraction force acting between the first yoke 225a located on one end side is formed larger than the attraction force acting between the first yoke 225b located on the other end side and the coil ( Even when the power supply is stopped at 521b, the magnet 520 may be fixed to one end of the protrusion 512.

In addition, referring to FIG. 12B, the first yoke 225 according to the exemplary embodiment is provided with a hole 225c in the center thereof, and thus both ends of the first yoke 225 may have a larger area than the center portion. have. In addition, before the driving force is applied to the magnet 520, the magnet 521a may be disposed at the center of the first yoke 225. When the power is supplied to the coil 521b, the magnet 520 moves to one end of the protruding portion 512 by the interaction with the magnet 521a, and in this state, any one of the first yokes 225 Since the force is closer to the one end portion of the first yoke 225, the attraction force is greater than the attraction force acting between the other end side, even if the power supply to the coil 521b stops the magnet portion ( 520 may remain fixed to one end of the protrusion 512.

On the other hand, as shown in Figure 12b, the first yoke 225 is bent in the direction of the magnet 521a at both ends may be provided with a bent portion (225d) facing both end surfaces of the magnet (521a), such In the structure, the magnet 520 may be more easily fixed to one or the other end of the protrusion 512.

In addition, referring to FIG. 12C, the first yoke 225 according to the exemplary embodiment has a central portion that is narrower than both ends, and thus both ends of the first yoke 225 may have a larger area than the central portion. Can be. In addition, before the driving force is applied to the magnet 520, the magnet 521a may be disposed at the center of the first yoke 225. When the power is supplied to the coil 521b, the magnet 520 moves to one end of the protruding portion 512 by the interaction with the magnet 521a, and in this state, any one of the first yokes 225 Since the force is closer to the one end portion of the first yoke 225, the attraction force is greater than the attraction force acting between the other end side, even if the power supply to the coil 521b stops the magnet portion ( 520 may remain fixed to one end of the protrusion 512.

In addition, referring to FIG. 12D, the first yoke 225 according to the exemplary embodiment includes extensions 225e extending in the optical axis direction at both ends, and are bent in the direction of the magnets 521a at the extensions 225e. Thus, the convex portions 225e may be provided to face both end surfaces of the magnet 521a. In addition, before the driving force is applied to the magnet 520, the magnet 521a may be disposed at the center of the first yoke 225. When the power is supplied to the coil 521b, the magnet 520 moves to one end of the protruding portion 512 by the interaction with the magnet 521a, and in this state, any one of the first yokes 225 Since the state becomes closer, the attraction force acting between the folding portions 225e at one end of the first yoke 225 is greater than the attraction force acting between the folding portions 225e at the other end to supply power to the coil 521b. Even if the magnet part 520 is stopped, the magnet part 520 may remain fixed at one end of the protrusion part 512.

12E, when the aperture module 500 according to an embodiment is provided separately from the first yoke 225 or the first yoke 225 is provided in the base 510 or the protrusion 512. To extend from or separately from the first yoke 225, a holding yoke 519 may be provided to fix the magnet 520 to one side or the other end of the protrusion 512. The holding yoke 519 may be provided at the protruding portions 512 opposite to both ends of the magnet 521a provided at the magnet portion 520. In more detail, both end surfaces of the magnet 521a may be provided on one surface of the opposing protrusion 512, respectively.

In addition, the base 510 may be provided with a rod member 516 supporting the magnet 520 so as to easily slide the magnet 520. In addition, the magnet 520 may be provided with an insertion groove 525 so that the rod member 516 is fitted.

The rod member 516 may have a round rod shape to facilitate sliding, and the insertion groove 525 may have a cylindrical shape having a diameter smaller than that of the rod member 516 to be in linear contact with the rod member 516 to reduce frictional force. Or, not shown, but may be provided in a polygonal shape.

For example, as shown in FIG. 10, the rod member 516 and the insertion groove 525 may be provided to be in linear contact with each other in the sliding direction in two points P1 and P2. Of course, the insertion groove 525 may be a structure provided with at least two spaced apart a predetermined interval in the extending direction of the rod member 516. In this case, the insertion groove 525 and the rod member 516 can slide while maintaining contact in the form of nearly point contact.

In addition, when only the rod member 516 is in contact with the magnet part 520, the fixing of the magnet part 520 may be unstable, such that tilting may occur. In addition, the part further spaced apart from the rod member 516. The support may be provided.

That is, the guide plate 517 is provided at an end portion of the protrusion 512 substantially in parallel with the rod member 516, and the guide boss is formed at the magnet holder 522 of the magnet part 520 facing the guide plate 517. 527, the guide boss 527 can be in sliding contact with the guide plate 517.

At least two guide bosses 527 may be provided in the extending direction of the rod member 516 to stably support the magnet part 520. In addition, an end portion of the guide boss 527 may have a round shape and may be in point contact with the magnet holder 522. For example, as illustrated in FIGS. 9 and 10, two guide bosses 527 may be provided at predetermined intervals.

Meanwhile, only one guide boss 527 may be provided, and in this case, the guide boss 527 may be provided at the center portion in the extending direction of the rod member 516.

When only one guide boss 527 is provided, for example, as illustrated in FIG. 11, an additional member 529 may be provided in the magnet holder 522 to install the guide boss 528. The guide boss 528 may be provided in a shape extending in a direction perpendicular to the extending direction of the rod member 516 to stably support the magnet holder 522. The guide boss 528 may be in line contact with the magnet holder 522.

When power is applied to the coil 521b, the magnet part 520 may move along the direction in which the rod member 516 extends due to the electromagnetic influence between the magnet 521a and the coil 521b.

The magnet 520 may be moved along one axis while being supported by the rod member 516 and the guide bosses 527 and 528.

The base 510 is provided with a first protrusion 513 that simultaneously passes through the first guide hole 533 of the first plate 530 and the second guide hole 543 of the second plate 540. In addition, the first plate 530 and the second plate 540 rotate around the first protrusion 513.

In addition, the magnet holder 522 is provided with a second protrusion 523 penetrating the first plate 530 and the second plate 540.

The second protrusion 523 may be configured to pass through the third guide hole 535 of the first plate 530 and the fourth guide hole 545 of the second plate 540.

Meanwhile, the third guide hole 535 and the fourth guide hole 545 may be formed to be inclined with respect to the moving direction of the magnet 520, and the third guide hole 535 and the fourth guide hole 545 may be formed. The inclined directions of may be opposite to each other.

Accordingly, when the magnet 520 is moved along one axis, the second protrusion 523 may be moved in the third guide hole 535 and the fourth guide hole 545, and the second protrusion 523 may be moved. According to the movement of the first plate 530 and the second plate 540 may be moved toward the magnet portion 520 or away from the magnet portion 520 (see FIGS. 7A and 7B).

Through the above embodiments, the camera module according to an embodiment of the present invention may selectively change the incident amount of light through the aperture module, and may prevent the performance of the auto focusing function from being degraded even when the aperture module is mounted. In addition, the weight increase due to the adoption of the aperture module can be minimized.

In the above description of the configuration and features of the present invention based on the embodiment according to the present invention, the present invention is not limited thereto, and various changes or modifications can be made within the spirit and scope of the present invention. As will be apparent to those skilled in the art, such changes or modifications are intended to fall within the scope of the appended claims.

110: housing
120: case
200: lens module
300: carrier
400: guide part
500: aperture module

Claims (16)

A housing accommodating the lens module; And
And an aperture module coupled to an upper portion of the lens module.
The aperture module may include: a base fixed to an upper portion of the lens module and including a protrusion extending along an outer side of the lens module in an optical axis direction; At least one plate provided on an upper portion of the base and having an entrance hole to change an amount of light incident on the lens module; And a magnet part movable in a direction perpendicular to the direction of the optical axis to the protrusion and having a driving magnet.
The housing module is provided with a coil for interacting with the magnet to drive the aperture module.
The method of claim 1,
The lens module is provided with a yoke on a surface facing the magnet portion,
The camera module is supported in close contact with the projecting portion by the attraction force between the magnet and the yoke provided in the magnet portion.
The method of claim 2,
The yoke is a camera module provided with the magnet portion separated from each other by a predetermined interval along the moving direction.
The method of claim 2,
The yoke is formed to be wider than the magnet in the direction of movement of the magnet,
The yoke has a camera module having a larger end area at both ends than the middle portion.
The method of claim 4, wherein
The yoke is provided with a hole in the middle of the camera module.
The method of claim 2,
The yoke is a camera module that is bent in the direction of the magnet at both ends is provided with a bending portion facing both end surfaces of the magnet.
The method of claim 1,
The protrusion has a rod member extending in the moving direction of the magnet,
The magnet module is provided with an insertion groove into which the rod member is inserted.
The method of claim 1,
The lower end of the magnet portion is provided with a guide boss protruding toward the protrusion,
The camera module is provided with a guide plate on the lower end in the optical axis direction of the protrusion so as to slide the guide boss.
The method of claim 1,
The base has a first projection protruding in the optical axis direction, at least one of the plate is a camera module to be fitted at the same time rotatably on the first projection to the axis of the first projection.
The method of claim 9,
The magnet part has a second projection projecting in the optical axis direction, the second projection is a camera module that is simultaneously fitted into the guide hole of the long hole shape provided in the at least one plate.
The method of claim 10,
And a guide hole provided in at least one of the plates such that the second protrusion is fitted into a long hole inclined in a moving direction of the driving unit.
The method of claim 11,
At least one said plate is two,
The guide hole includes a first and second guide holes, the first and second guide holes are provided with the camera module inclined mutually.
The method of claim 1,
A carrier for movably receiving the lens module in a first direction perpendicular to the optical axis direction and in a second direction perpendicular to the optical axis and the first direction,
The carrier module is accommodated in the housing to be movable in the optical axis direction.
The method of claim 13,
The housing is provided in a box shape,
On the surface parallel to the optical axis direction of the housing, two drive coils for providing a driving force to move the lens module in the first direction and the second direction, a drive coil for providing a driving force to move the carrier in the optical axis direction 1 And a coil for driving a dog and a plate of the aperture module.
The method of claim 1,
The magnet module and the coil are provided to face in a direction perpendicular to the optical axis direction.
The method of claim 1,
The base is provided with a yoke on a surface facing the magnet portion,
The camera module is supported in close contact with the projecting portion by the attraction force between the magnet and the yoke provided in the magnet portion.

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