WO2017135789A1 - Camera lens assembly - Google Patents

Abstract

Disclosed is a camera lens assembly having a lens part and a lens carrier for moving the lens part such that the same moves forward and backward in the direction of an optical axis. The disclosed camera lens assembly comprises: a base part; a lens carrier disposed to be slidable along a direction of an optical axis in the base part; and an automatic focal point adjustment driving part having one portion installed to the base part and the remaining portion installed to the lens carrier, to drive the lens carrier to move forward and backward along the direction of the optical axis by means of an electromagnetic force, wherein a part of the lens carrier and a part of the base part are convex-concave-coupled to each other, and a plurality of bearings are arranged on the convex-concave-coupled portion.

Description

Camera lens assembly

TECHNICAL FIELD The present invention relates to a camera lens assembly, and more particularly, to a micro camera lens assembly capable of auto focusing.

Nowadays, a camera lens assembly provided in a small mobile device such as a mobile communication terminal can express 13 million pixels as in a conventional digital camera, thereby realizing high resolution. In this way, as the camera lens assembly mounted on the mobile communication terminal becomes high performance, various various functions such as an optical zoom function, an autofocus control function, and a camera shake correction function are applied.

Among these functions, the autofocus control function allows you to capture clear and clear images according to the distance between the camera and the subject.

However, a conventional camera lens assembly having an auto focusing function may not move accurately due to manufacturing tolerances of each component of the camera lens assembly when the lens carrier is moved forward or backward in the optical axis direction for auto focusing. Problems may arise.

In order to solve the above problems, the present invention provides a stable forward and backward movement of the lens carrier by arranging a plurality of needle bearings between the base and the lens carrier together with a structure in which a part of the base and a part of the lens carrier are unevenly coupled to each other. The object is to provide a camera lens assembly.

In order to achieve the above object, the present invention provides a camera lens assembly having a lens unit and a lens carrier for moving the lens unit forward and backward in the optical axis direction, the base unit; A lens carrier slidably disposed along the optical axis in the base part; And a part of which is installed in the base part, and the other part of which is installed in the lens carrier, an auto focus driver for driving the lens carrier forward and backward along the optical axis direction through an electromagnetic force. A portion of the base part is unevenly coupled to each other, and the unevenly coupled portion provides a camera lens assembly, characterized in that a plurality of bearings are arranged.

The plurality of bearings may be needle bearings.

The base unit may include a main body having a space in which a lens carrier is installed; And a side part detachably coupled to one side of the main body.

The main body of the base portion may be snap-coupled with the side portion of the base portion.

The lens carrier is disposed symmetrically on one side and forms a pair of mounting surfaces to which the plurality of needle bearings contact, and forms a pair of inclined surfaces opposite to the pair of mounting surfaces of the lens carrier on both sides of the side. can do.

The angle between the pair of mounting surfaces formed on the lens carrier may be an obtuse angle.

The angle between the pair of mounting surfaces formed on the lens carrier may be a right angle.

The base portion may form a plurality of protrusions, and the lens carrier may form a plurality of grooves in which the plurality of protrusions are slidably inserted to be movable along the optical axis direction.

The lens carrier guide part may further include a lens carrier guide part supporting the plurality of needle bearings, and the lens carrier guide part may include a pair of retainers respectively mounted on the pair of mounting surfaces of the lens carrier.

The plurality of needle bearings are partially inserted into a plurality of grooves formed in the pair of mounting surfaces of the lens carrier, and the remaining portions are slidably contacted with the pair of inclined surfaces of the side through the through holes formed in the respective retainers. Can be.

The auto focus driver includes: a first magnet disposed on one side of the lens carrier; A first coil disposed inside the base part so as to face the first magnet; And a first yoke disposed behind the first coil.

A plurality of blades partially overlapping each other and disposed in the lens carrier; And a light amount adjusting driver installed at one edge of the lens carrier to drive the plurality of blades so that the plurality of blades rotate simultaneously to adjust the degree of opening of the light passing holes.

The light amount control unit, the drive arm is provided in the lens carrier and the plurality of blades are hinged at both ends; A second magnet fixed to the driving arm and rotating together with the driving arm; And a second coil installed at the lens carrier and rotating the second magnet.

The second magnet is a circular magnet, one end of the yoke is disposed adjacent to the circular magnet; includes, the circular magnet can be rotated clockwise or counterclockwise according to the direction of the current flowing in the second coil have.

The plurality of bearings may be ball bearings.

The lens carrier may include a guide protrusion having a pair of inclined surfaces to which some of the plurality of bearings come into contact with each other; And a guide surface to which the rest of the plurality of bearings come into contact with each other.

The lens carrier may include first and second guide grooves in which the plurality of bearings are slidably seated, the first guide grooves corresponding to the guide protrusions, and the second guide grooves corresponding to the guide surfaces. have.

The guide protrusion may be unevenly coupled to the first guide groove.

The first guide groove may be formed with an extension for partitioning the space of the first guide groove up and down.

A pair of mounting surfaces for inserting the guide protrusions may be formed in the center of the extension, and the pair of mounting surfaces may be formed to face the inclined surface of the guide protrusion.

Portions may further include a plurality of blades overlapping each other and disposed on the lens carrier.

Is installed at one corner of the lens carrier, the plurality of blades may be further rotated at the same time may further include a light amount adjusting drive unit for driving the plurality of blades to adjust the opening degree of the light passing hole.

The auto focus driver and the light amount driver may be disposed to face each other.

The plurality of ball bearings inserted into the first guide groove may be in point contact at three points.

The lens unit may include a plurality of lenses, and an aperture may be disposed between any two lenses of the plurality of lenses.

The distance between the two lenses in which the iris is disposed may be set wider than the distance between the lenses adjacent to each other.

As described above, in the present invention, since a part of the lens carrier and a part of the base have mutually uneven coupling structure, when the lens carrier moves along the optical axis (Z axis), the perpendicular direction of the optical axis (Z axis) (X axis, Y axis) To prevent shaking. In addition, according to the present invention, as the plurality of needle bearings are disposed between the base and the lens carrier to support the lens carrier, the lens carrier may move forward and backward along the optical axis (Z axis) in a structurally stabilized state.

1 is a perspective perspective view showing a camera lens assembly according to an embodiment of the present invention.

2 is an exploded perspective view showing a camera lens assembly according to an embodiment of the present invention.

3 is a plan view of the camera lens assembly with the shield can shown in FIG. 1 omitted.

4 is a cross-sectional view taken along line IV-IV shown in FIG. 3.

5 is a plan view of the camera lens assembly with the shield can and aperture shown in FIG. 1 omitted.

6A and 6B are cross-sectional views taken along the line VI-VI shown in FIG. 5 and show the forward and backward states of the lens carrier, respectively.

7A and 7B are plan views of the camera lens assembly with the shield can shown in FIG. 1 omitted, showing the driving state of the aperture, respectively.

8 is a perspective view showing a camera lens assembly according to another embodiment of the present invention.

9 is an exploded perspective view showing a camera lens assembly according to another embodiment of the present invention.

10 is a side cross-sectional view schematically illustrating an internal structure and an aperture of a lens unit of a camera lens assembly according to another exemplary embodiment of the present invention.

FIG. 11A is a perspective view of the camera lens assembly with the shield can and carrier cover shown in FIG. 8 omitted. FIG.

FIG. 11B is an enlarged view of the portion VII shown in FIG. 11A.

12A is a top view of the camera lens assembly with the shield can and carrier cover shown in FIG. 8 omitted.

FIG. 12B is an enlarged view of a portion XI shown in FIG. 12A.

13A and 13B are cross-sectional views taken along the line XII-XII shown in Fig. 12A, showing the forward and backward states of the lens carrier, respectively.

14 is a view showing a modification of the base portion according to another embodiment of the present invention shown in FIG.

15 is a cross-sectional view illustrating a forward and backward state of the lens carrier shown in FIG. 14, respectively.

Hereinafter, with reference to the accompanying drawings will be described in detail an embodiment of the present invention. Embodiments described below are shown by way of example in order to help understanding of the invention, it should be understood that the present invention may be modified in various ways different from the embodiments described herein. However, in the following description of the present invention, if it is determined that the detailed description of the related known functions or components may unnecessarily obscure the gist of the present invention, the detailed description and the detailed illustration will be omitted. In addition, the accompanying drawings may be exaggerated in some of the dimensions of the components rather than being drawn to scale to facilitate understanding of the invention.

In addition, as described below, the 'forward direction' of the lens carrier is defined as the direction in which the lens carrier moves in a direction in which the distance between one surface of the base and one surface of the lens carrier opposite thereto is increased, and the 'reverse direction' of the lens carrier is It is defined as a direction in which the lens carrier moves in a direction in which the distance between one surface of the base and one surface of the lens carrier opposite thereto is reduced.

 1 and 2 are a combined perspective view and an exploded perspective view showing a camera lens assembly according to an embodiment of the present invention.

1 and 2, a camera lens assembly 100 according to an embodiment of the present invention includes a base unit 110, a lens carrier 130 installed on the base unit 110 to move back and forth, The auto focus adjustment driving unit 150, the light amount adjusting driving unit 170, the lens unit 180, the shield can 190 covering one side of the base unit 110, and the lens carrier 130 are provided with an optical axis ( It may include a lens carrier guide portion 200 for supporting forward and backward along the (Z-axis).

The base part 110 may include a main body 111 and a side part 120 detachably coupled to one side of the main body 111.

The main body 111 may have a space S in which the lens carrier 130 is installed, and a third light passing hole 101 through which light may pass may be formed. A pair of protrusions 116a and 116b protrude along the circumference of the main body 111 in the space S of the main body. As shown in FIG. 2, the protrusions 116a and 116b may be formed to be symmetrical with respect to the optical axis. However, the protrusions 116a and 116b may be formed to protrude at a predetermined interval around the main body 111. The protrusion 116 may prevent rotation of the lens carrier 130 together with the groove 136 of the lens carrier 130, which will be described later, and prevent separation of the lens carrier 130. The protrusions 116a and 116b may guide the lens carrier 130 to move forward and backward in the optical axis (Z-axis) direction, but do not directly contact the lens carrier 130. The flexible printed circuit board (FPCB) 112 for the light amount control unit 170 is first adhered to the lens carrier 130, and then the lens carrier 130 to which the FPCB 112 is adhered is installed on the main body 111. The FPCB 112 is bonded to the main body 111. The FPCB 112 is mounted with a light sensor for adjusting the amount of light. In addition, the main body 111 has a pair of coupling protrusions 115a and 115b that are snap-coupled to the pair of coupling grooves 125a and 125b of the side portion 120. A portion of the FPCB 112 is adhered to the lens carrier 130 and the other portion is adhered to the body 111. This is to send a driving signal for driving the aperture 179 moving with the lens carrier 130. In this case, since the lens carrier 130 is moved forward and backward along the axis (Z axis), the FPCB 112 is not bonded anywhere between the regions bonded to each component, that is, the middle portion of the FPCB 112, and at the same time the FPCB The intermediate portion of 112 is formed to be bent to have a margin length. This is to prevent the self-elasticity of the FPCB 112 from affecting forward and backward of the lens carrier 130.

The side part 120 is combined with the main body 111 to form one side of the base part 110. Between both sides 121 and 122 of the side part 120, a first yoke receiving groove 123 in which a part of the auto focus driver 150 to be described later is mounted is formed. The pair of coupling grooves 125a and 125b are formed at both sides 121 and 122 of the side portion 120, and the pair of coupling grooves 125a and 125b are contacted with the needle bearings 211a and 211b of the lens carrier guide part 200 to be described later. Inclined surfaces 121a and 122a are formed. The side part 120 is concave by a pair of inclined surfaces 121a and 122a, and the lens carrier 130 is convexly formed by a pair of mounting surfaces 131a and 131b to correspond to each other to form an interlocking structure. Achieve. A portion of the lens carrier 130 and a portion of the base portion 110 are unevenly coupled to each other.

The lens carrier 130 is installed in the space S of the base 110 so as to move forward and backward along the direction of the optical axis (Z axis), and is formed of a frame having a substantially closed loop to surround the lens unit 180. A second light passing hole 141 through which light may be incident may be formed at the center of the lens carrier 130. The light quantity adjusting driver 170 may be mounted on one side of the lens carrier 130, and the first lens module 181 and the second lens module 183 may be disposed along an optical axis that is the center of the lens carrier 130. Can be mounted.

The lens carrier 130 moves the first lens module 181 and the second lens module 183 of the lens unit 180 forward and backward by the auto focus adjusting driver 150 in the optical axis direction. A plurality of grooves 136a and 136b through which the protrusions 116a and 116b of the base unit 110 slidably extend are formed on the outer circumference of the lens carrier 130, respectively. In this case, the grooves 136a and 136b preferably have positions and shapes respectively corresponding to the protrusions 116a and 116b of the base 110. This roughly holds the coupling position of the lens carrier 130 and the base portion 110.

On the other side of the lens carrier 130, a pair of mounting surfaces 131a and 131b on which the lens carrier guide part 200 is installed are symmetrically disposed with respect to the optical axis. A pair of grooves 133a and 133b are formed on the mounting surfaces 131a and 131b. In this case, the plurality of grooves 133a and 133b are formed at the same direction and at the same angle, and the plurality of needle bearings 211a and 211b are partially inserted to be slidable, respectively.

As the pair of mounting surfaces 131a and 131b are formed to be inclined in the lens carrier 130, a portion of the lens carrier 130, that is, a portion in which the pair of mounting surfaces 131a and 131b are formed, is formed on the side part 120. Can be inserted. As such, the structure in which a part of the lens carrier 130 is inserted into the side portion 120 forms an approximately uneven structure. In this case, a pair of inclined surfaces 121a and 122b inclined to face the pair of mounting surfaces 131a and 131b of the lens carrier 130 are formed on both sides 121 and 122 of the side part 120, respectively.

A coupling groove 134 is provided between the pair of mounting surfaces 131a and 131b of the lens carrier 130 to which the first magnet 151 described later is installed.

The auto focus driver 150 is disposed between the lens carrier 130 and the side part 120 of the base part 110 and moves the lens carrier 130 a predetermined distance in the forward direction and the backward direction through an electromagnetic force. The auto focus driver 150 includes a first magnet 151, a first coil 153, and a first yoke 155.

The first magnet 151 is disposed on one side of the lens carrier 130 and is formed to correspond to the outer circumference of the lens carrier 130 between the pair of mounting surfaces 131a and 131b. In this case, the first magnet 151 has a predetermined length and the N pole and the S pole are magnetized on inner and outer peripheral surfaces of one side and the other side, respectively. That is, the first magnet 151 magnetizes the N pole on one side and the S pole on the other side on the surface facing the coil, and the S pole on the one side and the N pole on the other side, respectively. As such, the magnetic field section in which the magnetic force sensed by the auto-focusing hall sensor 163 increases or decreases substantially uniformly by magnetizing the N pole and the S pole into four poles on the inner / outer peripheral surfaces of both sides of the first magnet 151 as described above. This is to form.

The first coil 153 is disposed inside the side part 120 to face the first magnet 151, and is electrically connected to the FPCB 162 for the auto focus driver 150 and fixedly installed.

The first yoke 155 is disposed behind the first coil 153 and is fixed to the first yoke receiving groove 123 of the side part 120. The first yoke 155 is formed to have a width slightly wider than the width of the first coil 153, thereby increasing the intensity of the magnetic field formed between the first coil 153 and the first magnet 151. At the same time, the magnetic field can be expanded.

On the other hand, the FPCB 162 is mounted with a hall sensor 163 for auto focusing. The auto focus adjusting hall sensor 163 is spaced apart from the outer circumferential surface of the first magnet 151 and electrically connected to the FPCB 162.

The light amount adjusting driver 170 is disposed on the lens carrier 130, and includes a second magnet 173 having a circular shape, second coils 175a and 175b disposed on both sides of the second magnet 173, and The driving arm 171 is coupled to one surface of the second magnet 173 while forming a concentric axis on the second magnet 173. In this case, the second coils 175a and 175b are wound around yokes (not shown), respectively.

The aperture 179 includes a first blade 179a and a second blade 179b, and the first and second blades 179a and 179b are hingedly connected to the driving arm 171, respectively. Accordingly, the first and second blades 179a and 179b may be configured to move in a region in which light passes while the driving arm 171 rotates clockwise and counterclockwise in a straight line along the optical axis (Y-axis direction). Adjust big or small. The aperture 179 may be slidably supported by a cover (not shown) coupled to the lens carrier 130.

The lens unit 180 includes a first lens module 181 and a second lens module 183 installed in the lens carrier 130 to move forward and backward along the optical axis (Z-axis) direction along with the lens carrier 130. can do.

The shield can 190 may have a first light passing hole 191 through which light may be incident on the lens unit 180.

The lens carrier guide portion 200 includes a pair of retainers 210a and 210b mounted on the pair of mounting surfaces 131a and 131b of the lens carrier 130 and lens carriers by the retainers 210a and 210b, respectively. A plurality of needle bearings 211a and 211b rotatably installed on the pair of mounting surfaces 131a and 131b of the 130 may be included. A plurality of needle bearings 211a and 211b are inserted into a plurality of grooves 133a and 133b formed in the respective mounting surfaces 131a and 131b, and the remaining portions are provided through the through holes of the retainers 210a and 210b. Each inclined surface 121a, 122a of 120 is slidably contacted. When the lens carrier 130 is driven up and down with respect to the base part 110, the lens carrier guide part 200 may have a plurality of needle bearings 211a and 211b uniformly formed on the entire inclined surfaces 121a and 122a of the side part 120. It is slidably contacted with the side portion 120 at positions symmetrical with each other in the center of the lens carrier 130 to act to be supported.

3 is a plan view of the camera lens assembly with the shield can shown in FIG. 1 omitted, and FIG. 4 is a cross-sectional view taken along line IV-IV shown in FIG. 3.

Referring to FIG. 3, a portion of the lens carrier 130 and a side portion 120 that is part of the base portion 110 are unevenly coupled to each other, and a plurality of needle bearings 211a and 211b are disposed at the uneven portion. The pair of mounting surfaces 131a and 131b of the lens carrier 130 are inclined and are disposed symmetrically with respect to the optical axis. On the other hand, a pair of inclined surfaces inclined to face the pair of mounting surfaces 131a and 131b of the lens carrier 130 on both sides of the side portion 120 of the base portion 110 which is unevenly coupled to the lens carrier 130. 121a and 122a are disposed.

The lens carrier guide part 200 is disposed at a portion to which the unevenness is coupled, and guides the lens carrier 130 to drive forward and backward along the optical axis direction. The lens carrier guide part 200 is symmetrically disposed with respect to the optical axis such that an angle θ formed by the pair of inclined surfaces 121a and 122a of the side part 120 forms an obtuse angle of 90 ° or more on the same plane. Preferably, the angle θ formed by the pair of inclined surfaces 121a and 122a of the side portion 120 forms a right angle. Although the angle θ formed by the pair of inclined surfaces 121a and 122a of the side portion 120 has been described as forming an obtuse angle, the angle formed by the pair of inclined surfaces 121a and 122a of the side portion 120 is not limited thereto. (θ) can form an acute angle.

Similarly, the pair of mounting surfaces 131a and 131b of the lens carrier 130 are formed to have an obtuse angle of 90 ° or more.

As described above, the lens carrier 130 is formed on the optical axis by the structure in which the pair of inclined surfaces 121a and 122a of the side portion 120 and the pair of mounting surfaces 131a and 131b of the lens carrier 130 are formed to be inclined with each other. It can drive along a preset path without shaking with respect to the perpendicular direction (X-axis, Y-axis direction). Accordingly, despite the manufacturing tolerances of each component, the lens carrier 130 can accurately and stably drive the forward and backward directions.

In addition, when the lens carrier 130 is driven forward and backward, the projections 116a and 116b formed on the base 110 are slidably inserted into the plurality of grooves 136a and 136b formed on the outer circumference of the lens carrier 130. Can be.

Referring to FIG. 4, the plurality of needle bearings 211a and 211b are positioned between the lens carrier 130 and the base part 110 to guide forward and backward movement of the lens carrier 130. In detail, the needle bearings 211a and 211b of the plurality of needle bearings 211a and 211b are slidably disposed in the plurality of grooves 133a and 133b formed on the respective mounting surfaces 131a and 131b of the lens carrier 130, and the other side thereof is the base portion ( The inclined surfaces 121a and 122a formed on the side portion 120 of the 110 are slidably contacted, respectively. In this case, one side of the plurality of needle bearings 211a and 211b may be in surface contact or line contact with the plurality of grooves 133a and 133b, and the other side may maintain a line contact state on each of the inclined surfaces 121a and 122a. .

Accordingly, the lens carrier 130 may be smoothly driven in the forward direction and the backward direction by the plurality of needle bearings 211a and 211b in the space S of the base part 110.

5 to 6B, the forward and backward operations of the lens carrier by the auto focus controller of the camera lens assembly according to the exemplary embodiment of the present invention configured as described above will be described.

FIG. 5 is a plan view of the camera lens assembly with the shield can and blade shown in FIG. 1 omitted, and FIGS. 6A and 6B are cross-sectional views taken along the line VI-VI shown in FIG. 5 to drive the lens carrier forward and backward. Indicates the state.

First, referring to FIG. 6A, when a current is applied to the first coil 153 of the auto focus driver 150 in one direction, the lens carrier may move between the first magnet 151 and the first coil 153. As the electromagnetic force is generated, the first magnet 151 is pushed in the forward direction. Accordingly, the lens carrier 130 drives forward in the optical axis direction. The lens carrier is driven forward to increase the distance d1 between one surface of the base and one surface of the lens carrier opposite thereto. In this case, the plurality of needle bearings 211a and 211b support the lens carrier 130 so as to be slidable to guide the lens carrier 130 to stably move forward. At this time, the auto-focus adjusting hall sensor 163 detects the magnetic strength of the first magnet 151 that changes as the position of the first magnet 151 is changed, and the detection signal is portable when the camera lens assembly 100 is installed. Transmission to a control unit (not shown) of the device (not shown).

The controller may control the advance distance d of the lens carrier 130 through the detection signal of the auto focus adjusting hall sensor 163. For example, when the forward movement distance of the lens carrier 130 is set, the current is controlled in the first coil 153 of the auto focus driver 150. In this case, the lens carrier 130 stops in place and does not move forward or backward.

Meanwhile, referring to FIG. 6B, in the reverse operation of the lens carrier, since the current applied to the first coil 153 is applied in the opposite direction to the direction applied during the forward operation of the lens carrier, the first coil 153 and the first coil may be used. Electromagnetic force in the opposite direction when the lens carrier is moved between the magnets 151 is generated, and the first magnet 151 is pushed in the reverse direction as opposed to the forward operation of the lens carrier. Accordingly, the lens carrier 130 drives backward. The lens carrier is driven backward to reduce the distance d2 between one surface of the base and one surface of the lens carrier opposite thereto. In this case as well, it is slidably supported by the plurality of needle bearings 211a and 211b, so that stable backward driving can be performed. Even when the lens carrier 130 is reversed, when the current is controlled in the first coil 153, the lens carrier 130 may stop in place.

As described above, the lens carrier 130 is slidably guided with respect to the base 110 by the plurality of needle bearings 211a and 211b when the lens carrier 130 is driven for near and far focus. As such, the plurality of needle bearings 211a and 211b are supported in a line contact state with the pair of inclined surfaces 121a and 122a of the base 110 to prevent shaking due to external impact or various vibrations. In addition, due to the line contact structure of the needle bearing (211a, 211b) there is an advantage that the management point to manage the tolerance of the manufacturing process is reduced, the dimension management is easy.

It describes the operation of the aperture of the camera lens assembly according to an embodiment of the present invention configured as described above.

7A and 7B show the driving state of the aperture as the shield can shown in FIG. 1 is removed.

When the diaphragm 179 is in the fully open state as illustrated in FIG. 7A, the controller (not shown) flows current through the second coils 175a and 175b disposed on both sides of the second magnet 173, respectively. 173 is to be attracted to one end of both sides facing. Then, the second magnet 173 does not rotate, and the driving arm 171 coupled to one surface of the second magnet 173 does not rotate, but the first and second blades partially coupled to the driving arm 171. 179a and 179b completely open the second and third light passing holes 141 and 101 while moving in directions opposite to each other along the direction perpendicular to the optical axis (the Y-axis direction).

As described above, when the second and third light passing holes 141 and 101 are completely open, as shown in FIG. 7B, the controller controls the current flowing through the second coils 175a and 175b. Rotate the second magnet 173 at a predetermined angle (about 45 degrees) in a clockwise direction so that the first and second blades 179a and 179b block a part of the second and third light passing holes 141 and 101. The area through which light passes can be adjusted to be small or minimized.

Specifically, the controller flows current in a direction opposite to the open state to the second coils 175a and 175b. Then, the second magnet 173 rotates a predetermined angle (about 45 degrees) in the clockwise direction, and the driving arm 171 coupled to one surface of the second magnet 173 while forming a concentric axis with the second magnet 173 is also clockwise. Direction at the same rotation angle of the second magnet 173. Due to the rotation of the driving arm 171, the first and second blades 179a and 179b, which are partially coupled to the driving arm 171, move in opposite directions along the direction perpendicular to the optical axis (the Y-axis direction), and FIG. 7B. As described above, the degree of opening of the second and third light passing holes 141 and 101 is reduced or minimized.

In this case, the first and second blades 179a and 179b of the aperture 179 may be slidably supported by a cover (not shown) coupled to the lens carrier 130.

The camera lens assembly 100 according to the exemplary embodiment of the present invention as described above includes the driving unit 170 for adjusting the light amount and the aperture 179 linked thereto, and thus may adjust the aperture in a plurality of steps. Therefore, the camera lens assembly 100 according to the exemplary embodiment of the present invention has an advantage of controlling shooting conditions in various stages according to the amount of external light.

8 and 9 are combined perspective and exploded perspective views showing a camera lens assembly according to another embodiment of the present invention.

8 and 9, a camera lens assembly 1000 according to another exemplary embodiment of the present invention may include a base part 1110, a lens carrier 1130 installed on the base part 1110 so as to be movable back and forth, and One side of the auto focus adjusting driver 1150, the light amount adjusting driver 1170, the lens unit 1180, one side of the lens cover 1130, and a carrier cover 1195 and the base 1110. The shield can may include a shield can 1190 and a lens carrier guide portion 1200 (see FIG. 12A) supporting the lens carrier 1130 in a forward and backward direction along an optical axis (Z axis).

The base part 1110 may include a main body 1111 and a side part 1120 detachably coupled to one side of the main body 1111.

The main body 1111 may have a space S in which the lens carrier 1130 is installed, and a third light passing hole 1101 through which light may pass may be formed. The flexible printed circuit board (FPCB) 1118 for the light amount adjusting driver 1170 is first attached to the lens carrier 1130. As the lens carrier 1130 to which the FPCB 1118 is attached is installed in the main body 1111, the FPCB 1118 is disposed in the main body 1111, and the Hall sensor 1119 for adjusting the light amount is mounted in the FPCB 1118. In addition, the body 1111 is provided with a pair of coupling protrusions 1115a and 1115b that are snap-coupled to the pair of coupling grooves 1125a and 1125b of the side 1120. A portion of the FPCB 1118 is bonded to the lens carrier 1130, and the other portion is attached to the body 1111. This is to send a driving signal for driving the aperture 1179 moving together with the lens carrier 1130. In this case, since the lens carrier 1130 is moved forward and backward along the axis (Z axis), the FPCB 1118 is not bonded anywhere in the region between the portions bonded to each component, that is, the middle portion of the FPCB 1118, and at the same time the FPCB The middle portion of 1118 is formed to be bent to have a clearance length. This is to prevent the self-elasticity of the FPCB 1118 from affecting forward and backward of the lens carrier 1130.

A pair of guide grooves 1210 and 1220 of the lens carrier guide part 1200 are formed to contact the ball bearings 1251 and 1252 described later. The first guide groove 1210 and the second guide groove 1220 are formed at both sides 1112 and 1113 of the body 1111, respectively.

The first guide groove 1210 includes a first extension part 1215 that divides the first guide groove 1210 up and down in the center thereof. The space may be partitioned into the first upper guide groove 1211 and the first lower guide groove 1213 by the first extension part 1215. The first extension part 1215 has an opening formed at the center thereof so that the first upper guide groove 1211 and the first lower guide groove 1213 communicate with each other, and the opening has a first installation of the first extension part 1215. It is formed by the surface 1212a and the 2nd mounting surface 1212b. The first mounting surface 1212a and the second mounting surface 1212b are formed to be concave to correspond to the pair of inclined surfaces 1231 and 1233 of the guide protrusion 1230, and the guide protrusion which is one side of the lens carrier 1130 ( 1230 is convexly formed by a pair of inclined surfaces 1231 and 1233 such that the base portion 1110 and the lens carrier 1130 form an interlocking structure. Accordingly, a portion of the lens carrier 1130 and a portion of the base portion 1110 are unevenly coupled to each other. The lens carrier guide part 1200 to which the ball bearings 1251 and 1252, which will be described later, may be driven by combining the base part 1110 and the lens carrier 1130 is formed.

The second guide groove 1220 includes a second extension part 1225 at the center thereof, and the second guide groove 1220 is partitioned upward and downward by the second extension part 1225, so that the second upper guide groove 1222 is provided. And the second lower guide groove 1223.

The side portion 1120 is combined with the main body 1111 to form one side surface of the base portion 1110. The pair of coupling grooves 1125a and 1125b are formed at both sides of the side portion 1120. Between the coupling grooves 1125a and 1125b of the side portion 1120, a first yoke 1153 which is a part of the auto focus driver 1150 to be described later is mounted.

The lens carrier 1130 is installed in the space S of the base 1110 so as to move forward and backward along the direction of the optical axis (Z axis), and is formed of a frame having a substantially closed loop to surround the lens unit 1180. A second light passing hole 1141 may be formed at the center of the lens carrier 1130 to allow light to enter. The light amount adjusting driver 1170 may be mounted on one side of the lens carrier 1130, and the first lens module 1181 and the second lens module 1183 may be along an optical axis that is the center of the lens carrier 1130. Can be mounted.

The lens carrier 1130 moves the first lens module 1181 and the second lens module 1183 of the lens unit 1180 forward and backward in the optical axis direction by the auto focus driver 1150.

On one side of the lens carrier 1130, the guide protrusion 1230 and the guide surface 1240 of the lens carrier guide part 1200 are symmetrically disposed with respect to the optical axis. The guide protrusion 1230 may be formed in a wedge shape, and a pair of inclined surfaces 1231 and 1233 are formed to contact the ball bearing 1251 of the lens carrier guide part 200 to be described later. The guide surface 1240 is formed in a plane such that the guide surface 1240 is in contact with the ball bearing 1252 of the lens carrier guide portion 1200 described later. The lens carrier 1130 is coupled to the main body 1111, and the guide protrusion 1230 divides the space of the first guide groove 1210 into four, and the guide surface 1240 of the space of the second guide groove 1220. Partition into two. In this case, the plurality of ball bearings 1251 and 1252 are slidable in the first guide groove 1210 and the second guide groove 1220 so as to contact the guide protrusion 1230 or the guide surface 1240 in the partitioned space, respectively. Is inserted.

As the guide protrusion 1230 is formed to be inclined in the lens carrier 1130, a portion of the lens carrier 1130, that is, a portion in which the guide protrusion 1230 is formed, is inserted into the first guide groove 1210 of the base portion 1110. Can be. As such, the structure in which a part of the lens carrier 1130 is inserted into the base portion 1110 has an approximately uneven structure. In this case, the pair of mounting surfaces 1212a inclined to face the pair of inclined surfaces 1231 and 1233 of the guide protrusion 1230 of the lens carrier 1130 in the first guide groove 1210 of the base 1110. 1212b).

A coupling groove 1134 is provided between the guide protrusion 1230 and the guide surface 1240 of the lens carrier 1130 to which the first magnet 1151 to be described later is installed.

The auto focus driver 1150 is disposed between the lens carrier 1130 and the side portion 1120 of the base 1110, and moves the lens carrier 1130 in a forward direction and a backward direction by an electromagnetic force. The auto focus driver 1150 includes a first magnet 1151, a first coil 1153, and a first yoke 1155.

The first magnet 1151 is disposed on one side of the lens carrier 1130 and is formed to correspond to the outer circumference of the lens carrier 1130 between the guide protrusion 1230 and the guide surface 1240. In this case, the first magnet 1151 has a predetermined length and the N pole and the S pole are magnetized on inner and outer peripheral surfaces of one side and the other side, respectively. That is, in the first magnet 1151, the N pole is magnetized on one side and the S pole is magnetized on the other side of the first magnet 1151, and the N pole is magnetized on the other side. As such, the magnetic poles of the magnetic force detected by the autofocus control Hall sensor 1163 (see FIG. 11A) are approximately uniform by magnetizing the N pole and the S pole into four poles on the inner and outer circumferential surfaces of both sides of the first magnet 1151, respectively. This is to form a magnetic field section that increases or decreases.

The first coil 1153 is disposed inside the side 1120 so as to face the first magnet 1151, and is electrically connected to an FPCB (not shown) for the auto focus driver 1150 and fixedly installed.

The first yoke 1155 is disposed behind the first coil 1153 and is fixed to the side 1120. The first yoke 1155 is formed to have a width slightly wider than the width of the first coil 1153, thereby increasing the strength of the magnetic field formed between the first coil 1153 and the first magnet 1151. At the same time, the magnetic field can be expanded.

On the other hand, the FPCB (not shown) is equipped with a hall sensor 1163 for adjusting the auto focus. The auto focus adjusting hall sensor 1163 is spaced apart from an outer circumferential surface of the first magnet 1151 and electrically connected to an FPCB (not shown).

The light quantity adjusting driver 1170 is disposed on the lens carrier 1130, and includes a second magnet 1173 having a circular shape, second coils 1175a and 1175b disposed on both sides of the second magnet 1173, and a first one. The driving arm 1171 is coupled to one surface of the second magnet 1 173 while being concentric with the second magnet 1 173. In this case, the second coils 1175a and 1175b are wound around the yokes 1176a and 1176b, respectively.

Camera lens assembly according to another embodiment of the present invention is provided with a separate auto-focus control unit 1150 for the auto-focus control and the light control unit 1170 for adjusting the amount of light. The auto focus driver 1150 and the driver for adjusting the light amount 1170 may be included as separate components to prevent magnetic field interference between the drivers. The auto focus driver 1150 may be disposed at one side of the camera lens assembly, and the light amount driver 1170 may be disposed at the other side opposite to one side of the camera lens assembly. Preferably, in order to prevent magnetic field interference between the driving units, the auto focus driver 1150 and the light amount driver 1170 may be disposed to face each other.

The iris 1179 includes a first blade 1179a and a second blade 1179b, and the first and second blades 1179a and 1179b are hingedly connected to the driving arm 1171, respectively. As a result, the first and second blades 1179a and 1179b may be configured to move in a region in which light passes while the driving arm 1171 rotates clockwise and counterclockwise in a straight line along the direction perpendicular to the optical axis (Y-axis direction). Adjust big or small. The aperture 1179 may be slidably supported by a cover (not shown) coupled to the lens carrier 1130. The aperture 1179 may be disposed between the first lens module 1181 and the second lens module 1183 and disposed in the lens carrier 1130.

The lens unit 1180 is fixedly installed in the lens carrier 1130 and moves forward and backward along the optical axis (Z-axis) direction along with the lens carrier 1130 and the second lens module 1183. It may include. The lens unit 1180 may be formed such that the first and second blades 179a and 179b are disposed between the first lens module 1181 and the second lens module 1183.

The carrier cover 1195 covers one side surface of the lens carrier 1130, and a light passing hole through which light may be incident on the lens unit 1180 may be formed on one surface of the carrier cover 1195.

The shield can 1190 may have a first light passing hole 1191 through which light may be incident to the lens unit 1180.

The lens carrier guide portion 1200 is a lens coupled to the first guide groove 1210 and the second guide groove 1220 and the first guide groove 1210 and the second guide groove 1220 of the base portion 1110. The guide protrusion 1230 and the guide surface 1240 of the carrier 1130, and a plurality of ball bearings (1251, 1252) rotatably installed between the base portion 1110 and the lens carrier 1130. have.

A plurality of ball bearings 1251 are inserted into a space partitioned by the coupling of the first guide groove 1210 and the guide protrusion 1230, and the space partitioned by the coupling of the second guide groove 1220 and the guide surface 1240. A plurality of ball bearings 1252 are inserted into the grooves. The plurality of ball bearings 1251 and 1252 are slidably contacted with the first guide groove 1210 and the second guide groove 1220 of the body 1111. The lens carrier guide part 1200 includes a plurality of ball bearings 1251 and 1252 having the first and second guide grooves 1210 and 1220 and the guide protrusion when the lens carrier 1130 is driven up and down with respect to the base part 1110. The base portion 1110 is slidably contacted with the base 1110 at positions symmetrical with each other in the center of the lens carrier 1130 to act uniformly on the entire surface 1230 and the guide surface 1240.

10 is a side cross-sectional view schematically illustrating an internal structure and an aperture of a lens unit of a camera lens assembly according to another exemplary embodiment of the present invention.

Referring to FIG. 10, the first and second lens modules 1181 and 1183 of the lens unit 1180 may be formed of a plurality of lenses. For example, the lens unit 1180 may be formed of five lenses. The lens unit 1180 includes a first lens 1183a, a second lens 1183b, a third lens 1181a, a fourth lens 1181b, and a fifth lens 1181c arranged in order from the shield can 1190 side. ). Specifically, the second lens module 1183 may have a configuration in which the first lens 1183a and the second lens 1183b are disposed at regular intervals, and the first lens module 1181 may include the third lens 1181a. ), The fourth lens 1181b and the fifth lens 1181c may be arranged at regular intervals. The aperture 1179 may be disposed between the first lens module 1181 and the second lens module 1183, and specifically, may be disposed between the second lens 1183b and the third lens 1181a. In FIG. 10, the first and second lens modules 1181 and 1183 are described as being composed of two and three lenses, respectively, but are not limited thereto. The number of lenses may be variously set.

The distance from the center of the first lens 1183a to the center of the second lens 1183b is a1, the distance from the center of the second lens 1183b to the center of the third lens 1181a is b, and the third lens ( The distance from the center of 1181a to the center of the fourth lens 1181b is a2, and the distance from the center of the fourth lens 1181b to the center of the fifth lens 1181c is a3. A1, a2, and a3, which are optical axis direction intervals between the lenses, may be formed to be the same or different from each other. In this case, the distance b from the center of the second lens 1183b to the center of the third lens 1181a may be disposed between the second lens 1183b and the third lens 1181a. It can be set to be wider than the interval (a1, a2, a3) between the remaining lenses. The interval b between the second and third lenses 1183a and 1181a in which the aperture 179 is disposed may be set wider than the intervals a1, a2, and a3 of the remaining adjacent lenses. In FIG. 10, the first and second lenses 1183a and 1183b and the third, fourth and fifth lenses 1181a, 1181b and 1181c have the same shape, but the shape of the lens is not limited thereto and each lens is disposed. It may be formed in various shapes to suit the function to perform according to the position.

FIG. 11A is a perspective view of the camera lens assembly with the shield can and lens carrier shown in FIG. 8 omitted, and FIG. 11B is an enlarged view of the portion shown in FIG. 11A.

Referring to FIG. 11A, a first guide groove 1210 and a second guide groove 1220 into which the ball bearings 1125 and 1252 are slidably inserted are formed at one side of the base portion 1110. The first and second guide grooves 1210 and 1220 and the guide protrusion 1230 and the guide surface 1240 of the lens carrier 1130 are coupled to each other. The plurality of ball bearings 1251 and 1252 respectively disposed in the space formed by the coupling support the lens carrier 1130 slidably to guide the lens carrier 1130 to stably move forward.

The second guide groove 1220 may have a space divided up and down by the second extension part 1225 formed at the center thereof. The upper space may be referred to as the second upper guide groove 1221, and the lower space may be referred to as the second lower guide groove 1223. The partitioned second upper and lower guide grooves 1221 and 1223 may include a front surface 1220a and both side surfaces 1220b and an extension 1225 of the second guide groove 1220, and a guide surface of the lens carrier 1130. 1240).

The lower surface 1225a of the second extension part 1225 may be formed to have an inclination. Accordingly, when the ball bearing 1252b sliding in the second lower guide groove 1223 moves to the upper end in the direction of the optical axis (Z axis), the ball bearing 1252b is stopped from being moved upward by the lower surface 1225a. The lower side 1225a may fix the ball bearing 1252b.

Referring to FIG. 11B, the first guide groove 1210 is divided into upper and lower portions by the first extension part 1215 formed at the center of the first guide groove 1210. 1 Lower guide groove 1213 may be formed. In this case, the centers of the first extension part 1215 are formed so that both sides 1215a and 1215b of the extension part are spaced apart from each other so that the first upper guide groove 1211 and the first lower guide groove 1213 communicate with each other. In order to insert the guide protrusion 1230 of the lens carrier 1130 into the first guide groove 1210 of the base portion 1110, the space between the one side 1215a and the other side 1215b of the first extension part is spaced apart. First and second mounting surfaces 1212a and 1212b are formed at the spaced portions to correspond to the pair of inclined surfaces 1231 and 1233 of the guide protrusion 1230 of the lens carrier 1130. Specifically, a first installation surface 1212a is formed at one side 1215a of the first extension part 1215, and a second installation surface 1212b is formed at the other side 1215b, and both sides 1215a of the first extension part 1215a are formed. The guide protrusion 1230 may be inserted between the portions 1215b. The first and second mounting surfaces 1212a and 1212b are recessed to correspond to the first and second inclined surfaces 1231 and 1233. The first and second installation surfaces 1212a and 1212b and the first and second inclined surfaces 1231 and 1233 form an interlocking structure. A portion of the lens carrier 1130 and a portion of the base portion 1110 are unevenly coupled to each other. The uneven coupling enables stable driving in the X-axis and Y-axis directions when the lens carrier 1130 is driven.

The partitioned first upper and lower guide grooves 1211 and 1213 may include a front surface 1210a and both side surfaces 1210b and an extension part 1225 of the second guide groove 1210, and guide protrusions of the lens carrier 1130. It may be formed by the inclined surfaces (1231, 1233) of 1230.

Third and fourth mounting surfaces 1214a and 1214b may be formed below the first guide groove 1210. Similar to the first and second mounting surfaces 1212a and 1212b, the third and fourth mounting surfaces 1214a and 1214b may be guide protrusions so that the guide protrusions 1230 may be inserted into the first guide grooves 1210. A recess is formed to correspond to the pair of inclined surfaces 1231 and 1233 of 1230. The third and fourth mounting surfaces 1214a and 1214b form an interlocking structure with the first and second inclined surfaces 1231 and 1233. Accordingly, a part of the base 1110 and a part of the lens carrier 1130 are unevenly coupled to each other.

The lens carrier 1130 is formed by the first to fourth mounting surfaces 1212a, 1212b, 1214a, and 1214b of the main body 1111 and the pair of inclined surfaces 1231 and 1233 of the lens carrier 1130 formed to be inclined with each other. ) Can be driven along a preset path without shaking with respect to the perpendicular direction (X-axis, Y-axis direction) of the optical axis.

Like the second extension part 1225 of the second guide groove 1220, the lower surface 1215c of the first extension part 1215 may be formed to have an inclination. Accordingly, when the ball bearings 1251c and 1251d sliding in the first lower guide groove 1213 move to the uppermost end in the optical axis (Z-axis) direction, the ball bearings 1215c stop moving upward by being caught by the lower surface 1215c. The lower side 1215c can fix the ball bearings 1251c and 1251d.

FIG. 12A is a plan view of the camera lens assembly with the shield can and carrier cover shown in FIG. 8 omitted, and FIG. 12B is an enlarged view of part XI shown in FIG. 12A.

By combining the lens carrier 1130 and the base 1110, a space in which the ball bearings 1125 and 1252 are accommodated is defined. The first guide groove 1210 and the guide protrusion 1230 are unevenly coupled in a mutually engaging structure, the second guide groove 1220 is a structure that is coupled to the guide surface 1240 planar.

Referring to FIG. 12A, the ball bearings 1251 and 1252 are disposed at a portion that is flatly coupled with the uneven portion, and guides the lens carrier 1130 to move forward and backward along the optical axis direction. The ball bearings 1252a and 1252b are slidably inserted into the second upper and lower guide grooves 1222 and 1223, respectively. In the forward and backward driving of the lens carrier 1130, the ball bearings 1252a and 1252b contact the guide surface 1240 of the lens carrier 1130 and move up and down with respect to the front surface 1220a of the second guide groove 1220. Sliding in the direction.

In addition, the ball bearings 1252 of the plurality of ball bearings 1252 inserted into the second guide grooves 1220 may be slidably disposed on the guide surface 1240 of the lens carrier 1130, and the other side thereof may be the second of the base 1110. The front surface 1220a of the guide groove 1220 is slidably contacted.

In addition, when the lens carrier 1130 is driven forward and backward, a plurality of ball bearings 1252a and 1252b are formed in the second guide groove 1220 of the base 1110 and the guide surface 1240 of the lens carrier 1130. As it is slidably inserted, the lens carrier 1130 is guided to accurately move forward and backward in the optical axis direction.

Referring to FIG. 12B, a part of the lens carrier 1130 and a main body 1111 which is a part of the base part 1110 are unevenly coupled to each other, and a plurality of ball bearings 1251 are disposed at the uneven part. The first guide groove 1210 may be divided into four spaces by the uneven coupling of the lens carrier 1130 and the base 1110. The guide protrusions 1230 of the lens carrier 1130 are coupled between one side 1215a and the other side 1215b of the first extension part 1215, which is the center of the first guide groove 1210, so that the first upper and lower guides are coupled to each other. The spaces of the grooves 1211 and 1213 are respectively divided into left and right sides. The ball bearings 1251a, 1251b, 1251c, and 1251d are slidably inserted into the four upper and lower guide grooves 1211 and 1213, respectively. In the forward and reverse driving of the lens carrier 1130, the ball bearings 1251 a, 1251 b, 1251 c, and 1251 d contact the inclined surfaces 1231 and 1233 of the guide protrusion 1230 of the lens carrier 1130 to allow the first guide groove 1210 to be moved. It slides in the up-down direction (Z-axis direction) with respect to the front surface 1210a and the side surface 1210b of ().

The lens carrier 1130 slides in the optical axis direction by the structure in which the inclined surfaces 1231 and 1233 of the guide protrusion 1230 and the pair of mounting surfaces 1212a and 1212b of the first guide groove 1210 are formed to be inclined with each other. Since the ball bearing 1251 is in contact with the guide protrusion 1230 to guide the lens carrier 1130, it may prevent sliding that may occur in the perpendicular direction (X-axis, Y-axis direction) of the optical axis.

The pair of inclined surfaces 1231 and 1233 of the guide protrusion 1230 of the lens carrier 1130 are formed to be inclined, and are arranged symmetrically with respect to the optical axis. On the other hand, the first guide groove 1210 of the main body 1111 of the base portion 1110, which is unevenly coupled with the lens carrier 1130, is inclined to face the pair of inclined surfaces 1231 and 1233 of the lens carrier 1130. A pair of photographing surfaces 1212a and 1212b are arranged. In this manner, the pair of mounting surfaces 1212a and 1212b of the base 1110 and the pair of inclined surfaces 1231 and 1233 of the guide protrusion 1230 of the lens carrier 1130 are formed to be inclined with each other. The carrier 1130 may be driven along a preset path without shaking with respect to the perpendicular direction (X-axis, Y-axis direction) of the optical axis. Accordingly, despite the manufacturing tolerances of each component, the lens carrier 1130 can accurately and stably drive the forward and backward directions.

The plurality of ball bearings 1251 and 1252 are positioned between the lens carrier 1130 and the base portion 1110 to guide forward and backward movement of the lens carrier 1130.

The plurality of ball bearings 1251 inserted into the first guide groove 1210 may be in point contact at three points. Specifically, one side of the ball bearing 1251a is slidably disposed on each inclined surface 1231 of the guide protrusion 1230 of the lens carrier 1130, and the other side of the ball bearing 1251a of the first guide groove 1210 of the base portion 1110. The side surfaces 1210b and the front surface 1210a of the slidable contact respectively. In this case, one side of the plurality of ball bearings 1251 may be in point contact with the inclined surfaces 1231 and 1233 of the guide protrusion 1230, and the other side thereof may be in contact with the front surface 1210a of the first guide groove 1210. The side may maintain a point contact state on the side surface 1210b of the first guide groove 1210, respectively.

In addition, the plurality of ball bearings 1252 inserted into the second guide grooves 1220 may be in point contact at two points. In detail, one side of the ball bearing 1252a may be in point contact with the guide surface 1240 of the lens carrier 1130, and the other side may be in point contact with the front surface 1220a of the second guide groove 1220. have.

Accordingly, the lens carrier 1130 may be smoothly driven in the forward direction and the backward direction by the plurality of ball bearings 1251 and 1252 in the space S of the base portion 1110, and the lens carrier 1130 When driving, stable driving is possible without shaking with respect to the perpendicular direction (X-axis, Y-axis direction) of the optical axis.

13A and 13B, the forward and backward operations of the lens carrier by the auto focus control unit of the camera lens assembly according to another exemplary embodiment of the present invention configured as described above will be described. 13A and 13B are cross-sectional views taken along the line XII-XII shown in Fig. 12A, showing the forward and backward states of the lens carrier, respectively.

First, referring to FIG. 13A, when a current is applied to the first coil 1153 of the auto focus driver 1150 in one direction in the forward operation of the lens carrier, the first magnet 1151 and the first coil 1153 may be disposed between the first and second coils 1153. As the electromagnetic force is generated, the first magnet 1151 is pushed in the forward direction. Accordingly, the lens carrier 1130 is driven forward in the optical axis direction. The lens carrier 1130 is driven forward to increase the distance d1 between one surface of the base portion 1110 and one surface of the lens carrier opposite thereto. In this case, the plurality of ball bearings 1251 and 1252 support the lens carrier 1130 so as to be slidable to guide the lens carrier 1130 to stably move forward. At this time, the auto focusing hall sensor 1163 detects the magnetic force of the first magnet 1151 that changes as the position of the first magnet 1151 is changed, and the detection signal is portable when the camera lens assembly 1000 is installed. Transmission to a control unit (not shown) of the device (not shown).

The controller may control the advance distance d of the lens carrier 1130 through the detection signal of the auto focus adjusting hall sensor 1163. For example, when the forward movement distance of the lens carrier 1130 is set, the current is controlled in the first coil 1153 of the auto focus driver 1150. At this time, the lens carrier 1130 stops in place and does not move forward or backward.

Meanwhile, referring to FIG. 13B, in the reverse operation of the lens carrier, since the current applied to the first coil 1153 is applied in the opposite direction to the direction applied during the forward operation of the lens carrier, the first coil 1153 and the first coil 1153 are reversed. Electromagnetic force in the opposite direction when the lens carrier is moved between the magnets 1151 is generated, and the first magnet 1151 is pushed in the reverse direction as opposed to the forward operation of the lens carrier. Accordingly, the lens carrier 1130 is driven backward. The lens carrier 1130 is driven backward so that the distance d2 between one surface of the base 1110 and one surface of the lens carrier 1130 opposite thereto is reduced. Also in this case, as it is slidably supported by the plurality of ball bearings 1251 and 1252, stable backward driving can be performed. Even when the lens carrier 1130 is reversed, when the current is controlled in the first coil 1153, the lens carrier 1130 may stop in place.

As described above, the lens carrier 1130 is slidably guided to the base portion 1110 by a plurality of ball bearings 1251 and 1252 when the lens carrier 1130 is driven forward and backward for near and far focus. . As such, the plurality of ball bearings 1251 are supported in contact with the pair of inclined surfaces 1231 and 1233 of the guide protrusion 1230 to prevent shaking due to external impact or various vibrations. In addition, due to the structure in which the ball bearings 1251 and 1252 are in contact with each other, the lens carrier 1130 may be guided to stably move forward and backward.

Aperture operation of the camera lens assembly according to another embodiment of the present invention configured as described above is the same as the embodiment of the present invention described above.

14 is a view showing a modification of the base portion according to another embodiment of the present invention shown in FIG. Hereinafter, for convenience of description, a description will be given focusing on differences from the camera lens assembly according to another embodiment of the present invention described with reference to FIGS. 8 to 13. Omitted description and reference numerals may be replaced by the contents of the camera lens assembly according to another embodiment of the present invention described above.

Referring to FIG. 14, the base part 2110 according to another embodiment of the present invention may include a first guide groove 2210 and a second guide groove 2220 in which ball bearings 1251 and 1252 are slidably inserted at one side thereof. Is formed.

Although not shown, as described above, the first and second guide grooves 2210 and 2220 and the guide protrusion 1230 and the guide surface 1240 of the lens carrier 1130 may be coupled to each other. The plurality of ball bearings 1251 and 1252 respectively disposed in the space formed by the coupling support the lens carrier 1130 slidably to guide the lens carrier 1130 to stably move forward.

Third and fourth mounting surfaces 1214a and 1214b may be formed below the first guide groove 2210. The third and fourth installation surfaces 1214a and 1214b may correspond to the pair of inclined surfaces 1231 and 1233 of the guide protrusion 1230 so that the guide protrusions 1230 may be inserted into the first guide grooves 2210. It is formed concave. The third and fourth mounting surfaces 1214a and 1214b form an interlocking structure with the first and second inclined surfaces 1231 and 1233. Accordingly, a part of the base part 2110 and a part of the lens carrier 1130 are unevenly coupled to each other.

That is, due to the structure in which the third to fourth mounting surfaces 1214a and 1214b and the pair of inclined surfaces 1231 and 1233 of the lens carrier 1130 are formed to be inclined with each other, the lens carrier 1130 is perpendicular to the optical axis ( It can drive along a preset path without shaking about X-axis, Y-axis direction).

In this case, a part of the lens carrier 1130 and a main body 2111 which is a part of the base part 2110 are unevenly coupled to each other, and a plurality of ball bearings 1251 are disposed at the uneven part. Concavities and convexities are coupled, and a plurality of ball bearings 1251 are disposed at the concave and convex portions. The first guide groove 2210 may be divided into left and right sides by the uneven coupling of the lens carrier 1130 and the base part 2110. The ball bearings 1251 are slidably inserted into the first guide grooves 2210 respectively partitioned left and right.

Three ball bearings 1251a, 1251b, 1251c, 1251d, 1251e, and 1251f may be mounted in the first guide grooves 2210 divided by the lens carrier 1130, respectively. That is, a plurality of ball bearings 1251 are inserted into a space partitioned by the coupling of the first guide groove 2210 and the guide protrusion 1230.

In addition, a plurality of ball bearings 1252 are inserted into a space partitioned by the coupling of the second guide groove 2220 and the guide surface 1240. Three ball bearings 1252a, 1252b, and 1252c may be mounted in the second guide groove 2220.

The plurality of ball bearings 1251 and 1252 are slidably contacted with the first guide groove 2210 and the second guide groove 2220 of the main body 2111. The lens carrier guide part 1200 includes a plurality of ball bearings 1251 and 1252 having the first and second guide grooves 2210 and 2220 and the guide protrusion when the lens carrier 1130 is driven up and down with respect to the base part 2110. The base portion 2110 is slidably contacted with the base 2110 at positions symmetrical with each other in the center of the lens carrier 1130 to act uniformly on the entire surface 1230 and the guide surface 1240.

That is, the base part 2110 according to another embodiment of the present invention omits the first and second extension parts 1215 and 1225 for partitioning the space between the ball bearings 1251 and 1252 up and down, and the ball bearing ( 1251e, 1251f, and 1252c) may be further provided. Through this, the structure of the component can be simplified to improve the precision of the guide surface 1240, and the ball bearings 1251 and 1252 can be easily inserted in the assembling process.

15 is a cross-sectional view illustrating a forward and backward state of the lens carrier shown in FIG. 14, respectively. First, FIG. 15A is a sectional view showing a forward state of the lens carrier, and FIG. 15B is a sectional view showing a reverse state of the lens carrier.

Referring to FIG. 15A, when a current is applied to the first coil 1153 of the auto focus driver 1150 in one direction in the forward operation of the lens carrier, the first magnet 1151 and the first coil 1153 may be disposed between the first and second coils 1153. As the electromagnetic force is generated, the first magnet 1151 is pushed in the forward direction. Accordingly, the lens carrier 1130 is driven forward in the optical axis direction. The lens carrier 1130 is driven forward to increase the distance d1 between one surface of the base portion 2110 and one surface of the lens carrier opposite thereto. In this case, the plurality of ball bearings 1251 and 1252 support the lens carrier 1130 so as to be slidable to guide the lens carrier 1130 to stably move forward. At this time, the auto focusing hall sensor 1163 detects the magnetic force of the first magnet 1151 that changes as the position of the first magnet 1151 is changed, and the detection signal is portable when the camera lens assembly 1000 is installed. Transmission to a control unit (not shown) of the device (not shown).

The controller may control the advance distance d of the lens carrier 1130 through the detection signal of the auto focus adjusting hall sensor 1163. For example, when the forward movement distance of the lens carrier 1130 is set, the current is controlled in the first coil 1153 of the auto focus driver 1150. At this time, the lens carrier 1130 stops in place and does not move forward or backward.

Meanwhile, referring to FIG. 15B, in the reverse operation of the lens carrier, the current applied to the first coil 1153 is applied in the opposite direction to the direction in which the lens carrier is applied during the forward operation of the lens carrier. Electromagnetic force in the opposite direction when the lens carrier is moved between the magnets 1151 is generated, and the first magnet 1151 is pushed in the reverse direction as opposed to the forward operation of the lens carrier. Accordingly, the lens carrier 1130 is driven backward. The lens carrier 1130 is driven backward to reduce the distance d2 between one surface of the base portion 2110 and one surface of the lens carrier 1130 opposite thereto. Also in this case, as it is slidably supported by the plurality of ball bearings 1251 and 1252, stable backward driving can be performed. Even when the lens carrier 1130 is reversed, when the current is controlled in the first coil 1153, the lens carrier 1130 may stop in place.

As described above, when the lens carrier 1130 is driven forward and backward for near and far focus, the lens carrier 1130 is slidably guided to the base portion 2110 by a plurality of ball bearings 1251 and 1252. . As such, the plurality of ball bearings 1251 are supported in contact with the pair of inclined surfaces 1231 and 1233 of the guide protrusion 1230 to prevent shaking due to external impact or various vibrations. In addition, due to the structure in which the ball bearings 1251 and 1252 are in contact with each other, the lens carrier 1130 may be guided to stably move forward and backward.

The aperture operation of the camera lens assembly according to the modification of the present invention configured as described above is the same as the above-described embodiment.

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited thereto, and the technical idea of the present invention and the following by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of equivalents of the claims to be described.

Claims (27)

1. A camera lens assembly having a lens portion and a lens carrier moving forward and backward in the optical axis direction so that the lens portion is movable.

   A base portion;

   A lens carrier slidably disposed along the optical axis in the base part; And

   One portion is installed in the base portion, the other portion is installed in the lens carrier includes an auto focus adjusting drive unit for driving the lens carrier forward and backward along the optical axis direction through the electromagnetic force,

   A portion of the lens carrier and a portion of the base portion are unevenly coupled to each other, the camera lens assembly, characterized in that a plurality of bearings are disposed in the uneven portion.
2. The method of claim 1,

   And the plurality of bearings are needle bearings.
3. The method of claim 2,

   The base portion,

   A main body having a space part in which a lens carrier is installed; And

   And a side part detachably coupled to one side of the main body.
4. The method of claim 3, wherein

   The body of the base portion is a camera lens assembly, characterized in that snap coupled with the side of the base portion.
5. The method of claim 3, wherein

   The lens carrier is disposed symmetrically on one side and forms a pair of mounting surfaces to contact the plurality of needle bearings,

   And a pair of inclined surfaces on both sides of the side portion facing the pair of mounting surfaces of the lens carrier.
6. The method of claim 5,

   And the angle between the pair of mounting surfaces formed on the lens carrier is an obtuse angle.
7. The method of claim 5,

   And an angle between the pair of mounting surfaces formed on the lens carrier is perpendicular.
8. The method of claim 1,

   The base portion forms a plurality of protrusions,

   And the lens carrier defines a plurality of grooves into which the plurality of protrusions are slidably inserted to move along the optical axis direction.
9. The method of claim 5,

   Further comprising a lens carrier guide for supporting the plurality of needle bearings,

   And the lens carrier guide portion includes a pair of retainers respectively mounted on the pair of mounting surfaces of the lens carrier.
10. The method of claim 9,

    The plurality of needle bearings are partially inserted into a plurality of grooves formed in the pair of mounting surfaces of the lens carrier, and the remaining portions are slidably contacted with the pair of inclined surfaces of the side through the through holes formed in the respective retainers. Camera lens assembly, characterized in that.
11. The method of claim 1,

    The auto focus drive unit,

    A first magnet disposed on one side of the lens carrier;

    A first coil disposed inside the base part so as to face the first magnet; And

    And a first yoke disposed behind the first coil.
12. The method of claim 11,

    A plurality of blades partially overlapping each other and disposed in the lens carrier; And

    And a light amount adjusting driver installed at one edge of the lens carrier to drive the plurality of blades so that the plurality of blades rotate at the same time to adjust the degree of opening of the light passing holes.
13. The method of claim 12,

    The light amount adjusting drive unit,

    A driving arm installed at the lens carrier and connected to the plurality of blades at both ends;

    A second magnet fixed to the driving arm and rotating together with the driving arm; And

    And a second coil installed in the lens carrier and rotating the second magnet.
14. The method of claim 13,

    The second magnet is a circular magnet,

    Yoke is disposed so that one end is adjacent to the circular magnet;

    And the circular magnet is rotated clockwise or counterclockwise according to the direction of the current flowing in the second coil.
15. The method of claim 12,

    The light amount adjusting drive unit,

    And a first portion adhered to the lens carrier, a second portion adhered to the base portion, and a third portion between the first and second portions bent to have a length. Camera lens assembly.
16. The method of claim 1,

    And the plurality of bearings are ball bearings.
17. The method of claim 16,

    The lens carrier,

    A guide protrusion having a pair of inclined surfaces to which some of the plurality of bearings come into contact with each other; And

    And a guide surface on which the rest of the plurality of bearings come into contact with each other.
18. The method of claim 17,

    The base portion is formed with a first and a second guide groove in which the bearing is slidably seated

    And the first guide groove corresponds to the guide protrusion, and the second guide groove corresponds to the guide surface.
19. The method of claim 18,

    The guide protrusion is a camera lens assembly, characterized in that the mutual coupling with the first guide groove.
20. The method of claim 19,

    The first guide groove is a camera lens assembly, characterized in that the extension is formed to partition the space of the first guide groove up and down.
21. The method of claim 20,

    In the center of the extension portion is provided with a pair of installation surface into which the guide protrusion can be inserted,

    And the pair of mounting surfaces are formed to face the inclined surface of the guide protrusion.
22. The method of claim 16,

    And a plurality of blades, the portions of which overlap each other and are disposed in the lens carrier.
23. The method of claim 22,

    And a light amount adjusting driver installed at one edge of the lens carrier to drive the plurality of blades so that the plurality of blades rotate simultaneously to adjust the opening degree of the light passing holes.
24. The method of claim 23,

    And the auto focus driver and the light amount driver are arranged to face each other.
25. The method of claim 18,

    And a plurality of ball bearings inserted into the first guide groove are in point contact at three points.
26. The method of claim 1,

    The lens unit includes a plurality of lenses,

    A camera lens assembly, characterized in that the aperture is disposed between any two lenses of the plurality of lenses.
27. The method of claim 26,

    And the distance between the two lenses in which the aperture is disposed is set wider than the distance between the remaining adjacent lenses.

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