KR20190129656A - Iris module and camera module including the same - Google Patents

Abstract

The present invention relates to an iris module and a camera module including the same. According to an embodiment, the iris module includes: a base; a plurality of blades which are provided on the upper part of the base in order to overlap each other in sequence and are rotated around individual rotation axes to form a plurality of incident holes of different sizes by mutual combination; and a driving part having a magnet part. Any one of the plurality of blades may be a driving blade directly interlocked with the magnet part. The remaining blades other than the driving blade may be driven directly or indirectly with the driving blade. It is possible to minimize the increase of weight.

Description

Aperture module and camera module including same {IRIS MODULE AND CAMERA MODULE INCLUDING THE SAME}

The present invention relates to an aperture module and a camera module including the same.

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. However, 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 or the image stabilization 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.

In addition, since the aperture module having various apertures must be installed in a small space, accurate apertures may not be realized due to space constraints.

The present invention is to solve the above problems, to minimize the increase in weight according to the adoption of the aperture module, to provide an aperture module and a camera module including the same that can accurately implement a variety of apertures.

In one embodiment, an aperture module includes: a base; A plurality of blades which are provided on the upper part of the base in order to overlap each other and are rotated based on respective rotation axes to form a plurality of incident holes having different sizes by mutual combination; And a driving unit having a magnet part, wherein any one of the plurality of blades is a driving blade which is directly linked to the magnet part, and the remaining blades except the driving blade are driven to be directly or indirectly connected to the driving blade. Can be.

In addition, the aperture module of one embodiment, the base; And a plurality of blades provided on the upper portion of the base in order to overlap each other, and each of the plurality of blades rotates with respect to an individual rotational axis to form a plurality of incident holes of different sizes by mutual combination. Has an opening that is a part of a regular N-square (N: natural number), and is centered on a position spaced apart by a distance L between the rotation axis and the optical axis in a direction opposite to the optical axis from any one of the plurality of blades; The position of the opening can be formed so as to meet any one of the vertices of the opening whose radius is the distance 2L between the center and the optical axis and at least a part of which is a square.

In addition, the camera module of one embodiment, the lens module accommodated in the housing; And an aperture module configured to continuously form entrance holes of various sizes by a plurality of blades, wherein the aperture module includes: a magnet unit interlocked with the plurality of blades to provide driving force; and the magnet unit is opposite to the magnet unit. It may include a; coil provided in the lens module.

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

In addition, the aperture module according to the present invention can accurately implement various apertures.

In addition, the aperture module according to the present invention can accurately implement not only the aperture aperture change of the multi-stage structure but also the continuous aperture change.

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;
5a to 5c is a plan view showing a state that the aperture module is driven to change the diameter of the incident hole,
Figure 6 is an exploded perspective view of the blades provided in the aperture module according to an embodiment of the present invention,
FIG. 7 is a reference diagram for explaining a mechanism for specifying a location of an entrance hole (opening) provided in blades of an aperture module according to an embodiment of the present invention;
8 is an exploded perspective view of an aperture module according to another embodiment of the present invention;
9A to 9C are plan views illustrating a case in which an aperture module is driven to change an incident hole diameter of the aperture module of FIG. 8;
10 is an exploded perspective view of blades provided in the aperture module shown in FIG. 8;
FIG. 11 is a reference diagram for explaining a mechanism for specifying a location of an entrance hole (opening) provided in the blades of the aperture module illustrated in FIG. 8;
12 is an exploded perspective view of an aperture module according to another embodiment of the present invention;
13A to 13C are plan views illustrating a case in which an aperture module is driven to change an incident hole diameter of the aperture module of FIG. 12.
14 is an exploded perspective view of blades provided in the aperture module shown in FIG. 12;
FIG. 15 is a reference diagram for describing a mechanism for specifying a location of an entrance hole (opening) provided in the blades of the aperture module illustrated in FIG. 12.
16 is an exploded perspective view of an aperture module according to another embodiment of the present invention;
17A to 17C are plan views illustrating a case in which an aperture module is driven to change an incident hole diameter of the aperture module of FIG. 16.
18 is an exploded perspective view of the blades provided in the aperture module shown in FIG. 16,
FIG. 19 is a reference diagram for explaining a mechanism for specifying a location of an entrance hole (opening) provided in the blades of the aperture module illustrated in FIG. 16.

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 falling within the scope of the spirit of the present invention through the addition, modification, or deletion of the elements, but also the spirit of the spirit of the present invention. 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, and an aperture module 500, 600, 700, and 800. ), The housing 110 and the case 120.

The lens module 200 may include a lens barrel 210 having a plurality of lenses for photographing a subject and a holder 220 for receiving 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 may move in the optical axis direction to adjust the focus. 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 lens module 200, that is, the position in the optical axis direction of 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. In addition, 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 between the yoke and the magnet 710 in a direction perpendicular to the optical axis direction.

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, etc., the lens module 200 is a first direction (X axis) perpendicular to the optical axis (Z axis), and the first to the optical axis and the first direction perpendicular to the first direction It can be moved in two directions (Y-axis).

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 part 400 in the first direction, and the guide part 400 and the lens module 200 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 for generating 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 coils 810b are disposed to face each other in the first direction to generate 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, 600, 700, or 800 is a device configured to selectively change the incident amount of light incident on the lens module 200.

For example, the aperture modules 500, 600, 700, and 800 have different sizes of entrance holes 590-591, 592, 593, 690-691, 692, 693, 790-791, 792, 793, 890-891, A plurality of blades capable of implementing 892, 893 is provided. The amount of light incident may be adjusted by implementing any one of a plurality of sized entrance holes using a plurality of blades according to a shooting environment.

The diaphragm modules 500, 600, 700, and 800 are coupled to the lens module 200 and are configured to selectively change an 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, 600, 700, and 800 may be combined with the lens module 200 together with the lens module 200 in the optical axis direction (Z-axis direction), first direction (X-axis direction), and second direction (Y-axis). Direction) is configured to be movable. That is, the distance between them does not change by allowing the lens module 200 and the aperture module 500, 600, 700, and 800 to move together during focusing and shake correction.

4 to 7 are views illustrating an aperture module 500 according to an embodiment of the present invention, the aperture module 500 according to an embodiment will be described in detail with reference to these.

Referring to FIG. 4, the aperture module 500 includes a base 510, first to third blades 540, 560, and 580, and an aperture driving unit (magnet unit 520 and a housing 110 of the camera module 1000). It includes a coil (521b) provided in). The cover 530 may include a base 510 and a cover 530 that covers the first to third blades 540, 560, and 580 and has an opening 531 through which light is incident.

In the present embodiment, three blades 540, 560, and 580 are provided for the purpose of describing the embodiment, and the blades 540, 560, and 580 have openings of circular or regular polygons (N, where N is a natural number). The circular and regular polygons may have openings of a shape in which the circular and regular polygons are combined with each other, or the openings of different sizes may have openings of the interconnecting shape.

The magnet part 520 may interact with the coil 521b provided in the housing 110 to reciprocate in a direction perpendicular to the optical axis (Z axis). In the drawing, the magnet 520 may move in the first direction (X-axis direction).

Referring to the drawings, for example, the magnet part 520 may reciprocate in the X-axis direction, and interlocked with the magnet part 520 to be rotated relative to the rotation shafts 514, 516, and 518, respectively. As the three blades 540, 560, and 580 rotate, the sizes of the entrance holes 590-591, 592, and 593 may be changed.

The aperture driver may include a coil fixed to the housing 110 to face the magnet 520 and the magnet 520 disposed on the base 510 so as to be movable along one axis perpendicular to the optical axis (the X axis in the drawing). 521b).

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.

In addition, the present embodiment may use a closed loop control method that detects and feeds back the position of the magnet 520 when the magnet 520 is linearly moved. Therefore, the position sensor 521c may be provided for the closed loop control. The position sensor 521c may be installed adjacent to the center or the side of the coil 521b to face the magnet 521a. The position sensor 521c may be installed on the substrate 900.

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 for providing the driving force to the aperture module 500 is provided as the 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 may be used during auto focusing and shake correction. Even if the aperture 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 movement guide part 512 on which the magnet part 520 is disposed. The movement guide part 512 may extend in the optical axis direction from the base 510 to face the lens module 200.

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 part 520 is coupled to the movement guide part 512 of the base 510. In addition, the holder 220 of the lens module 200 may be provided with a 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 movement guide 512 by the attraction force between the yoke 225 and the magnet 521a. The yoke (not shown) may be provided in the base 510. For example, the yoke (not shown) is provided to face the magnet 520 in the base 510 or the movement guide 512 protruding from the base 510, and the magnet 521a provided in the magnet 520. ) And the magnet 520 by the attraction force of the yoke (not shown) may be supported in close contact with the movement guide part 512. This embodiment may be provided with a yoke in the lens module 200 or the base 510, the detailed illustration is omitted, but the Republic of Korea Patent Application No. 10-2018- filed by Samsung Electro-Mechanics Co., Ltd., the same applicant as the present application Yokes of various structures disclosed in 0074710 (Fig. Nos. 225, 226, 227 + 519, 515, 518) and the like can be applied.

In addition, the magnet part 520 according to the present exemplary embodiment may move in a direction perpendicular to the optical axis direction, and the first to third parts provided to them by the rotation of the first to third blades 540, 560, and 580. The overlapping positions of the openings 541, 561, and 581 may be changed to change the size of the incident hole. Thus, when the magnet part 520 moves to one end of the movement guide part 512 in a direction perpendicular to the optical axis direction, the size of the incident hole may be changed to be larger or smaller.

First to third blades 540, 560 and 580 are sequentially stacked on the base 510 in the optical axis direction-the first blade 540 and the second blade 560 in order from the object side to the image side. And the third blades 580 are stacked. The first to third holes 543, 563, and 583 of the first to third blades 540, 560, and 580 are fitted on the top surface of the base 510, respectively. First to third shaft protrusions (514, 516, 518) may be provided. In addition, the first to third blades 540, 560, and 580 may rotate about the first to third shafts 514, 516, and 518, and thus, the first to third blades 540, 560. The size of the incident hole may be changed while the overlapping positions of the first to third openings 541, 561, and 581 of 580 are changed.

The magnet part 520 is interlocked with the first to third blades 540, 560, and 580 so that the first to third blades 540, 560, and 580 are the first to third shaft protrusions 514, 516, and 518. It provides a driving force that can rotate around.

The magnet holder 522 of the magnet part 520 is provided with a first driving protrusion 523 fitted into a guide hole provided in one direction in one of the first to third blades 540, 560, and 580. Then, the remaining blades that are not directly connected to the first driving protrusion 523 are directly or indirectly interlocked with the blades that are directly linked to the first driving protrusion 523, according to the movement of the magnet part 520. The third blades 540, 560, and 580 may rotate in conjunction with each other.

For example, in the present exemplary embodiment, the first driving protrusion 523 is inserted into the first guide hole 565 of the second blade 560 positioned in the optical axis direction among the three blades to move the magnet part 520. Accordingly, the second blade 560 may rotate about the second shaft protrusion 516 as a central axis. In addition, when the second blade 560 rotates by inserting the second driving protrusion 589 provided in the third blade 580 into the second guide hole 567 of the second blade 560, the third blade 580. ) May rotate with the third shaft 518 as a central axis. Furthermore, the second driving protrusion 589 of the third blade 580 is also fitted into the third guide hole 547 of the first blade, so that the first blade 540 has the first shaft protrusion 514 as the central axis. Can rotate As a result, the three first to third blades 540, 560, and 580 may rotate around the first to third shafts 514, 516, and 518, respectively. Of course, this is only an example, and a guide hole directly connected to the first driving protrusion 523 of the magnet part 520 may be provided in the first or second blade, and the second driving protrusion may also be provided in the first or second blade. Various design changes are possible, such as can be provided in the blade.

Here, the first to third shaft protrusions 514, 516, and 518 and the first to third holes 543, 563, and 683 to which they are inserted may have a rounded cross section, and after the protrusions are inserted into the holes, It is desirable to minimize the tolerance of projections and holes so that only blade rotation is possible.

In addition, the first to third guide holes 565, 567, and 547 in which the first or second driving protrusions 523 and 589 are fitted, are moved according to the movement of the first or second driving protrusions 523 and 589. Since the third blades 540, 560, and 580 should be rotatable, they may be provided long in one direction. In addition, since the first guide hole 565 needs to be rotated according to the movement of the magnet part 520, the first guide hole 565 may be provided to be elongated in a direction inclined in the moving direction of the magnet part 520, that is, the first driving protrusion 523. Can be. In addition, the second guide hole 567 and the third guide hole 547 are rotated by the second driving protrusion 589 is inserted into the second guide hole 567 and the third guide hole 547 is a second drive. The protrusion 589 may be provided to be elongated in the inclined direction.

  The first to third guide holes 565, 567, and 547 may be provided in a straight line or a curve extending in one direction. In addition, when the first to third guide holes 565, 567, and 547 are curved in one direction, they may have the same curvature as the arc of a predetermined circle.

The first guide hole 565 is directly connected to the magnet part 520 reciprocating in one direction (X-axis direction), and since the first driving protrusion 523 of the magnet part 520 moves linearly, the first guide hole 565. When the 565 is curved in one direction, the rotation amount (rotation angle) of the second blade 560 may be substantially proportional to the movement amount of the magnet part 520 (the first guide hole 565 is a straight line). In the case of the entrance angle according to the position of the first guide hole 565-The entry angle means the angle formed by the inner wall of the guide hole and the driving direction of the driving protrusion when the driving protrusion is pushed the inner wall of the guide hole- Is changed from time to time, so the amount of rotation (rotation angle) of the second blade 560 cannot be proportional to the amount of movement of the magnet portion 520). Accordingly, when the first guide hole 565 is curved, control of the driving unit may be more simple.

In addition, since the third blade 580, which rotates the third shaft protrusion 518 as the rotation axis, is fitted into the second and third guide holes 567 and 547, the third blade 580 is the second blade 560. In accordance with the rotation of the), the first blade 540 is rotated in conjunction with the rotation of the third blade (580).

When the second and third guide holes 567 and 547 are provided in a curved shape, the inner walls of the second driving protrusions 589 and the curved second and third guide holes 567 and 547 that rotate in rotation are formed. Since it is mutually pushed, it is possible to design such that the entry angle is always kept constant-especially when the second and third guide holes 567 and 547 have an arc shape of a predetermined circle. Accordingly, the force required when the second driving protrusion 589 rotates in one direction or another direction opposite to one direction may be substantially the same. Accordingly, when the second and third guide holes 547 and 567 are curved, control of the driving unit may be more simple.

The first to third blades 540, 560, and 580 are provided with first to third openings 541, 561, and 581, respectively. In addition, since the first to third blades 540, 560, and 580 slide in contact with each other, antistatic treatment may be performed to prevent friction electricity.

The center of the incident holes formed by the first to third openings 541, 561, and 581 of the first to third blades 540, 560, and 580 may coincide with the optical axis. That is, the first to third blades 540, 560, and 580 are rotated about the first to third shaft protrusions 514, 516, and 518, respectively, based on the rotational axes thereof, and the first to third blades 540, 560, and 580 are provided to them according to their rotational driving. The center of the incident hole formed by overlapping the first to third openings 541, 561, and 581 may be coupled to the base 510 such that the center of the incident hole is substantially coincident with the optical axis.

In this case, the first to third spinnerets 514, 516, and 518 may be positioned to correspond to vertices of the equilateral triangle. Accordingly, the centers of the triangles formed by the first to third shafts 514, 516, and 518 may substantially coincide with the optical axis.

The first to third openings 541, 561, and 581 of the first to third blades 540, 560, and 580 may have a regular hexagonal shape. Accordingly, the incident holes formed by overlapping the first to third openings 541, 561, and 581 according to the rotation of the first to third blades 540, 560, and 580 may be hexagons or regular hexagons.

Here, the incident holes formed by the plurality of blades overlapping each other may be a regular N-square. In this case, in the first embodiment, a plurality of blades may be provided with N or N / 2, and the blades may be provided with at least one or two straight parts inside the boomerang shape having no opening. In a second embodiment, the plurality of blades may be provided with N or N / 2 pieces, and the plurality of openings provided in the plurality of blades may be regular N-squares having the same size.

The first to third blades 540, 560, and 580 are coupled to the base 510 such that at least one portion thereof overlaps each other in the optical axis direction, and are configured to be movable by the aperture driver. For example, the first to third blades 540, 560, and 580 may be configured to be rotatable in the same direction according to one direction movement of the magnet 520. Accordingly, when the size of the entrance hole increases when the magnet 520 moves in one direction, the size of the entrance hole may decrease when moving in the other direction opposite to the one direction.

In addition, some of the first to third openings 541, 561, and 581 may be configured to overlap each other in the optical axis direction. Portions of the first to third openings 541, 561, and 581 may overlap each other in the optical axis direction to form an entrance hole through which light passes.

At least a portion of the first to third openings 541, 561, and 581 may overlap each other to form a plurality of incident holes having different diameters. For example, the entirety of the first to third openings 541, 561, and 581 may overlap to form an entrance hole having a relatively large diameter, and a part of the first to third openings 541, 561, and 581 may be formed. They can overlap to form relatively small incident holes. The entrance hole may have a round shape or a polygonal shape according to the shape of the first to third openings 541, 561, and 581.

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

5A to 5C, in order to distinguish the first to third blades from each other, the first blade 540 is indicated by a solid line, the second blade 560 is indicated by a dashed dashed line, and the third blade 580 is indicated by a dotted line. do.)

Referring to FIG. 5A, when the magnet part 520 is located at one end portion, the first to third openings 541, 561, of the first to third blades 540, 560, and 580 are provided by the aperture driver. 581 can all overlap precisely to form the largest entrance hole 590-591 in diameter.

Referring to FIG. 5B, when the magnet part 520 is located between one side and the other end part, the first to third blades 540, 560, and 580 are first to third shaft protrusions by the aperture driving part. 514, 516, and 518 are rotated about an axis, and the first to third openings 541, 561, and 581 may be partially overlapped to form entrance holes 590-592 having a medium diameter.

Referring to FIG. 5C, when the magnet part 520 is located at the other end portion opposite to one side, the first to third blades 540, 560, and 580 are first to third shaft protrusions by the aperture driver. The first and third openings 541, 561, and 581 may be partially overlapped with each other to form the incident holes 590-593 having the smallest diameter.

In addition, although not shown, the magnet 520 may be moved to a position other than those shown in FIGS. 5A, 5B, and 5C, and accordingly, the aperture module 500 according to the present embodiment may have various sizes. The incident hole can be implemented continuously.

5A to 5C, the magnet part 520 is configured such that the size of the entrance hole becomes smaller or larger from one end portion to the other end portion, but the size of the entrance hole may be implemented in another manner. Do. For example, when the magnet part 520 is approximately in the middle part, the size of the entrance hole is the largest, and when the magnet part 520 moves to one end, the entrance hole of the smallest size is realized, and the magnet part 520 is the other side. When moved to the end, it can be designed to realize a medium sized entrance hole.

Referring to FIG. 7, the aperture module 500 according to the present embodiment may implement the entrance holes of various sizes continuously while allowing the shape of the entrance holes to be exactly square in all sizes. For example, as illustrated in FIGS. 5A to 5C, the first to third openings 541, 561, and 581 may be provided as regular hexagons, and incident holes of all sizes formed by the hexagons may be implemented as regular hexagons.

It is assumed that the magnet part 520 is located at one end, and thus the case where the size of the incident holes formed in the state where the first to third blades 540, 560, and 580 overlap with each other is the largest is the case. In the first to third spinnerets 514, 516, and 518 which are rotation axes of any one of the first to third blades 540, 560, and 580, the first to third spinnerets in a direction opposite to the optical axis OX. 514, 516, 518 and a circle (OL) having a center (O) spaced apart by the distance (L) between the optical axis and a radius (2L) between the center (O) and the optical axis (R) and a regular hexagon If the positions of the first to third openings 541, 561 and 581 are designed so that one vertex of the first to third openings 541, 561 and 581 meet (of course, the first to third openings 541, 561). 581), the center of the regular hexagon is always coincident with the optical axis OX. The entrance holes of all sizes formed by overlapping the first to third openings 541, 561, and 581 may be implemented as regular hexagons.

8 to 11 are views for explaining the aperture module according to another embodiment of the present invention. The aperture module 600 according to another embodiment of FIG. 8 to FIG. 11 has the same configuration as that of the embodiment 500 described with reference to FIGS. 4 to 7, and the first to third blades are the same. Since only the shapes of the first to third openings are different, other configurations than the first to third blades use the same reference numerals, and descriptions of the other configurations are replaced with those described in FIGS. 4 to 7, and the first to third configurations. Only the three blades will be described.

The first to third blades 640, 660, and 680 are coupled to the base 510 such that at least one portion thereof overlaps each other in the optical axis direction, and are configured to be movable by the aperture driver. For example, the first to third blades 640, 660, and 680 may be configured to be rotatable in the same direction as the magnet part 520 moves in one direction. Accordingly, when the size of the entrance hole increases when the magnet 520 moves in one direction, the size of the entrance hole may decrease when moving in the other direction opposite to the one direction.

In addition, at least some of the first to third openings 641, 661, and 681 may be configured to overlap each other in the optical axis direction. Portions of the first to third openings 641, 661, and 681 may overlap each other in the optical axis direction to form an entrance hole through which light passes.

At least a portion of the first to third openings 641, 661, and 681 may overlap each other to form a plurality of incident holes having different diameters. For example, the entirety of the first to third openings 641, 661, and 681 may overlap to form an entrance hole having a relatively large diameter, and a part of the first to third openings 641, 661, and 681 may be formed. They can overlap to form relatively small incident holes. The entrance hole may have a round shape or a polygonal shape according to the shape of the first to third openings 641, 661, and 681.

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

Referring to FIG. 9A, when the magnet part 520 is located at one end portion, the first to third openings 641, 661, of the first to third blades 640, 660, and 680 are provided by the aperture driver. 681 can all overlap precisely to form the largest entrance hole 690-691 in diameter.

Referring to FIG. 9B, when the magnet part 520 is positioned between one side and the other end part, the first to third blades 640, 660, and 680 are first to third shaft protrusions by the aperture driver. 514, 516, and 518 may be rotated about an axis, and the first to third openings 641, 661, and 681 may partially overlap to form an entrance hole 690-692 having a diameter of about a middle.

Referring to FIG. 9C, when the magnet part 520 is located at the other end portion opposite to one side, the first to third blades 640, 660, and 680 are first to third shaft protrusions by the aperture driver. The first and third openings 641, 661, and 681 may be partially overlapped with each other to form the incident holes 690-693 having the smallest diameter.

In addition, although not shown, the magnet part 520 may be moved to a position other than those shown in FIGS. 9A, 9B, and 9C. The size may be changed to three stages, or the entrance holes of various sizes may be continuously implemented.

9A to 9C, the magnet part 520 is configured such that the size of the entrance hole becomes smaller or larger from one end portion to the other end portion, but the size of the entrance hole may be implemented in another manner. Do. For example, when the magnet part 520 is approximately in the middle part, the size of the entrance hole is the largest, and when the magnet part 520 moves to one end, the entrance hole of the smallest size is realized, and the magnet part 520 is the other side. When moved to the end, it can be designed to realize a medium sized entrance hole.

Meanwhile, in the aperture module 600 of the present embodiment, the first to third holes 643, 663, and 683 and the first to third guide holes 665, 667, and 647 are the apertures of the embodiment of FIGS. 4 to 7. Since the shapes, functions, and the like of the first to third holes 543, 563, and 583 and the first to third guide holes 565, 567, and 547 of the module 500 are all the same, detailed description thereof will be omitted.

Referring to FIG. 11, the aperture module 600 according to the present exemplary embodiment may implement the entrance holes of various sizes continuously while making the shape of the entrance holes at a specific position square. For example, as illustrated in FIGS. 9A to 9C, the first to third openings 641, 661, and 681 may be almost circular, and the smallest or largest sized entrance holes they form may be circular. .

First, it is assumed that the magnet part 520 is located at one end and the first to third blades 640, 660, and 680 have the largest size of the incident holes formed in the overlapping state. The size of the circular opening of the same size (circle having a radius 'R', hereinafter referred to as 'large diameter') is determined for the three blades 640, 660, and 680. Here, the center of the large-diameter circle coincides with the optical axis OX.

The first to third axes of the first to third shafts 514, 516, and 518 which are rotation axes of any one of the first to third blades 640, 660, and 680 in the opposite direction to the optical axis OX. A circle (OL) having a center (O) spaced apart by the distance (L) between the projections (514, 516, 518) and the optical axis, and a circle (OL) having a radius of the distance (2L) between the center (O) and the optical axis The sum point MP where the first to third openings 641, 661, and 681 meet is determined.

Next, the radius r in the case where the size of the incident holes formed in the state where the first to third blades 640, 660, and 680 are all overlapped is the smallest is checked, and the optical axis OX and the summation point MP are determined. Drawing a circle having a center (O ') and a radius' r' (hereinafter referred to as' small diameter ') on the connecting line, the first to the second small diameters extend outwardly to the outside of the large diameter. Three openings 641, 661, 681 may be provided, and the largest size (incident hole of radius R) and the smallest size (radius r of incidence) formed by the first to third openings 641, 661, 681. The entrance hole of the ball) may be implemented in a circular shape.

Here, the portion protruding to the outside of the large diameter may correspond to 1/3 of the circumference of the small diameter. Accordingly, when the first to third blades 840, 860, and 880 overlap at predetermined positions, a small diameter circular incident hole having a center of the optical axis OX may be accurately formed.

12 to 15 are views for explaining the aperture module according to another embodiment of the present invention. 12 to 15 are the same as those of the embodiment 500 described with reference to FIGS. 4 to 7 in other embodiments of the aperture module 700 according to FIGS. 4 to 7, and are provided on the first to third blades. Since only the shapes of the first to third openings are different, other configurations than the first to third blades use the same reference numerals, and descriptions of the other configurations are replaced with those described in FIGS. 4 to 7, and the first to third configurations. Only the three blades will be described.

The first to third blades 740, 760, and 780 are coupled to the base 510 such that at least one portion thereof overlaps each other in the optical axis direction, and are configured to be movable by the aperture driver. For example, the first to third blades 740, 760, and 780 may be configured to be rotatable in the same direction according to one direction movement of the magnet 520. Accordingly, when the size of the entrance hole increases when the magnet 520 moves in one direction, the size of the entrance hole may decrease when moving in the other direction opposite to the one direction.

In addition, at least some of the first to third openings 741, 761, and 781 may be configured to overlap each other in the optical axis direction. Portions of the first to third openings 741, 761, and 781 may overlap each other in the optical axis direction to form an incident hole through which light passes.

At least a portion of the first to third openings 741, 761, and 781 may overlap each other to form a plurality of incident holes having different diameters. For example, the entirety of the first to third openings 741, 761, and 681 may overlap to form an entrance hole having a relatively large diameter, and a part of the first to third openings 741, 761, and 781 may be formed. They can overlap to form relatively small incident holes. The incident hole may have a round shape or a polygonal shape according to the shape of the first to third openings 741, 761, and 781.

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

Referring to FIG. 13A, when the magnet part 520 is positioned at one end portion, the first to third openings 741, 761, of the first to third blades 740, 760, and 780 are provided by the aperture driver. 781 may all overlap to form a circular incident hole 790-791 having the largest diameter.

Referring to FIG. 13B, when the magnet part 520 is located between one side and the other end part, the first to third blades 740, 760, and 780 are first to third shaft protrusions by the aperture driver. 514, 516 and 518 are rotated about the axis, and the first to third openings 741, 761 and 781 are partially overlapped to form hexagonal or regular hexagonal incidence holes 790-792 having a medium diameter. Can be formed.

Referring to FIG. 13C, when the magnet part 520 is located at the other end portion opposite to one side, the first to third blades 740, 760, and 780 are first to third shaft protrusions by the aperture driver. 514, 516, and 518 are rotated about the axis, and the first to third openings 741, 761, and 781 are partially overlapped to form incident holes 790-793 having the smallest hexahedron or regular hexagon shape. can do.

In addition, although not shown, the magnet part 520 may move to a position other than those shown in FIGS. 13A, 13B, and 13C, and accordingly, the aperture module 700 according to the present embodiment may be configured as an entrance hole. The size may be changed to three stages, or the entrance holes of various sizes may be continuously implemented.

13A to 13C, the magnet part 520 is configured such that the size of the entrance hole becomes smaller or larger from one end portion to the other end portion, but the size change of the entrance hole may be implemented in other ways. Do. For example, when the magnet part 520 is approximately in the middle part, the size of the entrance hole is the largest, and when the magnet part 520 moves to one end, the entrance hole of the smallest size is realized, and the magnet part 520 is the other side. When moved to the end, it can be designed to realize a medium sized entrance hole.

Meanwhile, in the aperture module 700 of the present embodiment, the first to third holes 743, 763, and 783 and the first to third guide holes 765, 767, and 747 are the apertures of the embodiment of FIGS. 4 to 7. Since the shapes, functions, and the like of the first to third holes 543, 563, and 583 and the first to third guide holes 565, 567, and 547 of the module 500 are all the same, detailed description thereof will be omitted.

Referring to FIG. 15, the aperture module 700 according to the present exemplary embodiment may implement an entrance hole of various sizes continuously while making the shape of the entrance hole at most positions square. For example, as shown in FIGS. 13A-13C, the first to third openings 741, 761, and 781 are partially provided with arcs of a circle (radius R) and the remainder are regular hexagons, the largest of which are formed. The incident holes of the size may be implemented in a circular shape, and the incident holes below a predetermined size may be implemented in a regular hexagon, and the incident holes therebetween may be implemented in a shape in which the circular and regular hexagons are mixed.

The implementation method thereof is almost the same as the design method for 'having the first to third openings 541, 561, and 581 having a regular hexagon and implementing incident holes of all sizes formed by the regular hexagon' described with reference to FIG. 7. However, since the first to third openings 741, 761, and 781 are partially provided as arcs and the remaining parts as regular hexagons, detailed descriptions are omitted.

Meanwhile, in FIG. 15, the corner portion CP forming part of the first to third openings 741, 761, and 781 may maintain a partial shape of the regular hexagon or may be deformed to a somewhat rounded shape.

16 to 19 are views for explaining an aperture module according to another embodiment of the present invention. The aperture module 800 according to another embodiment according to FIGS. 16 to 19 has the same configuration as that of the embodiment 500 described with reference to FIGS. 4 to 7, and the first driving is provided in the magnet part 520. The position of the protrusion 523 'is shifted to the opposite side to change the position of the first guide hole 865 of the second blade 860 into which the first driving protrusion 523' is inserted. The positions and shapes of the second and third guide holes 867 and 847 provided in the second blades 840 and 860 are somewhat changed, and the shapes of the first to third openings provided in the first to third blades. Since this is different, other configurations than the first to third blades use the same reference numerals, and the description of the other configuration is replaced with that described in FIGS. 4 to 7, and only the first to third blades are described. do.

The first to third blades 840, 860, and 880 are coupled to the base 510 such that at least one portion thereof overlaps each other in the optical axis direction, and are configured to be movable by the aperture driver. For example, the first to third blades 840, 860, and 880 may be configured to be rotatable in the same direction according to one direction movement of the magnet 520. Accordingly, if the size of the incident hole increases when the magnet part 520 moves in one direction, as in the three embodiments 500, 600, and 700 described above with reference to FIGS. 4 to 15, the other direction opposite to one direction When moving to, the size of the incident hole may be reduced.

However, the present invention is not limited to this driving structure, and the present invention is implemented so that the size of the incident hole is formed to be the largest when the magnet part 520 is approximately in the middle of the actuator's moving section. When moving to the negative, the size of the entrance hole is about the middle, and when the magnet 520 moves to the other end of the opposite side of the one side may be implemented as the smallest size, in this case, the magnet 520 Even when moving in one direction, the size of the incident hole may increase and decrease.

As such, the size of the incident holes may be changed to be larger or smaller in sequence according to the one-way movement of the magnet part 520, or the sizes of the incident holes may be variously selected according to the design structure. Hereinafter, according to another embodiment 800 of the present invention, the size of the incident hole increases and decreases according to one direction movement of the magnet part 520-from one end portion to the other end direction or from the other end portion to the one end portion direction. Explain.

In addition, at least some of the first to third openings 841, 861, and 881 may be configured to overlap each other in the optical axis direction. Portions of the first to third openings 841, 861, and 881 may overlap each other in the optical axis direction to form incident holes through which light passes.

At least a portion of the first to third openings 841, 861, and 881 may overlap each other to form a plurality of incident holes having different diameters. For example, the entirety of the first to third openings 841, 861, and 881 may overlap to form an incident hole having a relatively large diameter, and a part of the first to third openings 841, 861, and 881 may be formed. They can overlap to form relatively small incident holes. The incident hole may have a round shape or a polygonal shape according to the shape of the first to third openings 841, 861, and 881.

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

Referring to FIG. 17A, when the magnet part 520 is located approximately in the middle of a driving path of the driving part, the first to third openings of the first to third blades 840, 860, and 880 may be formed by the aperture driving part. Almost all of the 841, 861, and 881 may overlap to form the entrance hole 890-891 having the largest diameter.

Referring to FIG. 17B, when the magnet part 520 is located at one end portion, the first to third blades 840, 860, and 880 may be the first to third shaft protrusions 514 and 516 by the aperture driver. , 518 may be rotated about an axis, and the first to third openings 641, 661, and 681 may partially overlap to form an entrance hole 890-892 having a diameter of about a middle.

Referring to FIG. 17C, when the magnet part 520 is located at the other end portion opposite to one side, the first to third blades 840, 860, and 880 are first to third shaft protrusions by the aperture driver. 514, 516, and 518 are rotated about the axis, and the first to third openings 841, 861, and 881 may partially overlap to form the incident holes 890-893 having the smallest diameter.

In addition, although not shown, the magnet part 520 may be moved to a position other than those shown in FIGS. 17A, 17B, and 17C, and accordingly, the aperture module 800 according to the present embodiment may be configured as an entrance hole. The size may be changed to three stages, or the entrance holes of various sizes may be continuously implemented.

In addition, in FIGS. 17A to 17C, when the magnet part 520 is approximately in the middle, the size of the entrance hole is the largest, and when the magnet part 520 moves to one end, the smallest sized entrance hole is realized. And, if the magnet 520 is moved to the other end portion is designed to implement a medium sized entrance hole, it is also possible to change the size of the entrance hole in other ways. For example, the magnet 520 may be configured such that the size of the entrance hole becomes smaller or larger as it goes from one end to the other end.

Meanwhile, the first to third holes 843, 863, and 883 of the aperture module 800 of the present embodiment are the first to third holes 543 and 563 of the aperture module 500 of FIGS. 4 to 7. 583) and the shape and function are the same, detailed description thereof will be omitted. In addition, the first to third guide holes 865, 867, and 847 in the aperture module 800 of the present embodiment are the first to third guide holes 565 of the aperture module 500 of FIGS. 4 to 7. , 567, 547 and the shape and location are somewhat different, but since the functions are all the same, detailed description thereof will be omitted.

Referring to FIG. 19, the aperture module 800 according to the present exemplary embodiment may implement the entrance holes of various sizes continuously while making the shape of the entrance holes at a specific position square. For example, as shown in FIGS. 18A-18C, the smallest, medium, and largest sized entrance holes having first to third openings 841, 861, and 881 are nearly circular and they form are circular. Can be implemented. Accordingly, in the case of the individual aperture of the three-stage aperture deformation structure, the apertures of all apertures may be circular.

First, it is assumed that the magnet part 520 is located approximately in the middle, and the case where the first and third blades 840, 860, and 880 are formed to have the largest size of the incident holes formed in the overlapping state is assumed to be the first to third. The blades 840, 860, and 880 have the same size of circular openings (circles with radius 'R', hereinafter referred to as 'large diameter'). Here, the center of the large-diameter circle coincides with the optical axis OX.

The first to third axes of the first to third shafts 514, 516, and 518, which are rotation axes of any one of the first to third blades 840, 860, and 880, are opposite to the optical axis OX. A circle (OL, hereinafter, ') having a center (O) at a position separated by the distance (L) between the protrusions (514, 516, 518) and the optical axis and a radius (2L) between the center (O) and the optical axis. And the summation point MP where the first to third openings 841, 861, and 881, which are circular, meet.

Next, the radius r in the case where the size of the incident holes formed in the state where the first to third blades 840, 860, and 880 are all overlapped is the smallest is checked, and the optical axis OX and the summation point MP are determined. Drawing a circle having a first center (O1) and a radius 'r' (hereinafter, referred to as 'small diameter') on a connecting line may realize a shape in which a small diameter slightly protrudes to the outside of the large diameter. In this case, the portion protruding to the outside of the large diameter may correspond to 1/3 of the circumference of the small diameter. Accordingly, when the first to third blades 840, 860, and 880 overlap at predetermined positions, a small diameter circular incident hole having a center of the optical axis OX may be accurately formed.

In addition, the radius r2 in the case where the size of the incident holes formed by overlapping the first to third blades 840, 860, and 880 is medium is checked, and the center is positioned on the arc of the imaginary circle having a radius of 2L. Drawing a circle having a radius of 'r2' (hereinafter, referred to as 'middle diameter') may implement a shape in which the medium diameter slightly protrudes to the outside of the large diameter. In this case, the portion protruding outward of the large diameter may correspond to 1/3 of the circumference of the medium diameter. Accordingly, when the first to third blades 840, 860, and 880 overlap at a predetermined position, an incident hole of a medium-diameter circular circle having an optical axis OX may be accurately formed.

Accordingly, the first to third openings 841, 861, and 881 may be provided to extend to the outside of the large diameter in small and medium diameters, respectively, and the first to third openings 841, 861, The largest, middle and smallest sized entrance holes formed by 881 may be circular.

Through the above embodiment, the camera module according to an embodiment of the present invention, it is possible to selectively change the incident amount of light through the aperture module, it is possible to prevent the performance of the auto focus adjustment function even if the aperture module is mounted In addition, the weight increase due to the adoption of the aperture module can be minimized. In addition, while changing the size of the entrance hole of the lap module in three stages or continuously, in most cases it can be implemented to form a square (square polygon or circle).

In addition, for the purpose of description of the present invention, the description has been made with respect to the entrance hole implemented by three blades having hexagonal (ordinary hexagonal) or circular openings, but is not limited thereto. The shape of the opening is polygonal (triangular, pentagonal, Octagon, etc.), and the number of blades may be three or more.

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 present invention.

110: housing
120: case
200: lens module
300: carrier
400: guide part
500, 600, 700, 800: Aperture module
1000: camera module

Claims (17)

Base;
A plurality of blades which are provided on the upper part of the base in order to overlap each other and are rotated based on respective rotation axes to form a plurality of incident holes having different sizes by mutual combination; And
It includes; a drive unit having a magnet;
Any one of the plurality of blades is a drive blade that is directly linked to the magnet portion, the remaining blades other than the drive blade is driven directly or indirectly interlocked with the drive blade driven module.
The method of claim 1,
Aperture module having a regular polygonal shape when the individual rotary shafts of the plurality of blades are connected to each other.
The method of claim 2,
The center of gravity of the regular polygon formed by the connection of the individual rotating shaft of the plurality of blades is approximately the aperture module and the optical axis.
The method of claim 1,
The rotation angle of the plurality of blades is approximately the same aperture module.
The method of claim 1,
The plurality of blades each have a plurality of openings of the same size and shape,
The aperture module of the plurality of openings are combined with each other to form the plurality of incident holes of different sizes.
The method of claim 5,
The aperture provided in the plurality of blades is at least part of the diaphragm (N: natural number) of the aperture module.
The method of claim 6,
A circle having a radius of a distance 2L between the center and the optical axis, the center of which is spaced apart by the distance L between the rotational axis and the optical axis in the opposite direction of the optical axis from any one of the plurality of blades; The aperture module is formed in the position of the opening so as to meet any one of the vertices of the opening is a part of a square.
The method of claim 7, wherein
The aperture provided in the plurality of blades is an aperture module (N: natural number) of the aperture module.
The method of claim 7, wherein
The aperture provided in the plurality of blades is part of the circular arc and the rest of the diaphragm (N: natural number) of the aperture module.
The method of claim 7, wherein
The plurality of blades are three pieces aperture module.
The method of claim 7, wherein
The plurality of incident holes formed by overlapping the plurality of blades are all diaphragm or regular N-square aperture module.
The method of claim 11,
And a position sensor provided to face the magnet of the magnet so as to sense the position of the magnet.
The method of claim 5,
The aperture provided in the plurality of blades is a diaphragm module having a shape in which at least two circular holes of different sizes are interconnected.
The method of claim 13,
The circular hole includes a large diameter and at least one small diameter smaller than the large diameter,
The large diameter is the same size as the incidence hole size when the incidence holes formed by the plurality of blades overlap each other are the largest,
At least one of the small diameter, the diaphragm module having a center on a straight line connecting the summation point and the optical axis and the radius 'r'.
(Summer point: a circle centered on a position spaced apart by the distance L between the rotation axis and the optical axis in the opposite direction of the optical axis from one of the plurality of blades, and a circle having a radius 2L between the center and the optical axis And the opening where the opening meets)
The method of claim 1,
The magnet module linearly moves in a direction substantially perpendicular to the optical axis direction.
Base; And
And a plurality of blades which are sequentially provided on the upper portion of the base and rotated based on respective rotation axes to form a plurality of incident holes of different sizes by mutual combination.
Each of the plurality of blades has an opening at least a portion of which is part of a regular N-square (N: natural number),
A circle having a radius of a distance 2L between the center and the optical axis, the center of which is spaced apart by the distance L between the rotational axis and the optical axis in the opposite direction of the optical axis from any one of the plurality of blades; The aperture module is formed in the position of the opening so as to meet any one of the vertices of the opening is a part of a square.
A lens module accommodated in the housing; And
And a diaphragm module of claim 1 to 16, which continuously forms incident holes of various sizes by a plurality of blades.
The aperture module,
And a magnet unit interlocked with the plurality of blades to provide driving force; and a coil provided in the lens module to face the magnet unit.

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