KR20160120472A - Optical integral actuator - Google Patents

Optical integral actuator Download PDF

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Publication number
KR20160120472A
KR20160120472A KR1020150049529A KR20150049529A KR20160120472A KR 20160120472 A KR20160120472 A KR 20160120472A KR 1020150049529 A KR1020150049529 A KR 1020150049529A KR 20150049529 A KR20150049529 A KR 20150049529A KR 20160120472 A KR20160120472 A KR 20160120472A
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KR
South Korea
Prior art keywords
ball
carrier
ois
connector
coil
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KR1020150049529A
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Korean (ko)
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KR101679785B1 (en
Inventor
김희승
전기훈
이환휘
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자화전자(주)
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Priority to KR1020150049529A priority Critical patent/KR101679785B1/en
Publication of KR20160120472A publication Critical patent/KR20160120472A/en
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G02B7/09—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B3/00—Focusing arrangements of general interest for cameras, projectors or printers
    • G03B3/10—Power-operated focusing
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/18—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets
    • H04N5/23287—

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Lens Barrels (AREA)

Abstract

The present invention relates to an optical integrated actuator which comprises: an OIS carrier moving in a first and a second direction, vertical to an optical axis, and including a magnet; an OIS coil installed in a direction, facing a magnet, to generate an electromagnetic force to the magnet; an AF carrier stored in the OIS carrier, moving in an optical axis direction, and including an AF coil; a conductive ball interposed between a bottom of a housing and a bottom of the OIS carrier; a conductive lower ball plate electrically connected with an external power supply, and touching the ball; and a conductive upper ball plate electrically connected with the AF coil, and touching the ball. As such, the present invention is capable of improving a usage of space.

Description

[0001] OPTICAL INTEGRAL ACTUATOR [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an actuator for a camera module mounted on a portable terminal, and more particularly, to an integral actuator for an optical system that implements an autofocus function and a camera shake correction function with a single actuator.

As hardware technology for image processing has developed and user needs for image shooting have increased, autofocus (AF) has been applied to camera modules mounted on mobile terminals such as mobile phones, smart phones, PDAs, tablets, , Auto Focus), and stabilization.

The autofocus function refers to a function of linearly moving the lens assembly in the direction of the optical axis to adjust the focal distance with respect to the subject, thereby generating a clear image in the image sensor provided at the rear end of the lens.

In addition, the camera-shake correction function refers to a function of correcting a phenomenon in which an image such as an image of a user's hand shake affects the sharpness of the image and thereby the image is disturbed or blurred. Is called Optical Image Stabilization (OIS) technology.

In the case of a camera module mounted on a smart phone or the like, the fluidity of the terminal itself is large, the hand and arm vibration occurring in the human body can easily be transmitted to the camera module, Since the length of the wrist bar is extended to the arm length of the user supporting the mobile terminal, the phenomenon of image blurring due to tremor or vibration is further increased Therefore, the necessity of image correction is more significant.

Korean Unexamined Patent Application Publication No. 10-2014-0144126 discloses an actuator having both an autofocus function and an autofocus function.

In this prior art, a method of moving a magnet provided on a carrier using an electromagnetic force generated from a coil is applied. A driving unit for moving the lens assembly in the optical axis direction to realize an auto focus function, The drive unit for implementing the camera shake correction function by moving the carrier to the XY plane is separately implemented, so that the two magnets are provided, and the PCB for power supply is also divided into two.

In particular, in order to realize both the OIS and the AF function, a structure for supplying power to each of a carrier provided in the outside and a carrier provided in the inside must be implemented. In this case, Are merely merged without a mutual sharing or organically coupled structure, which complicates the apparatus, and the behavior characteristics of the OIS and AF functions are precisely independent and precise. Furthermore, the complexity of such a structure can not be optimized for miniaturization or lightening of the device.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems in the background as described above, and it is an object of the present invention to provide an image forming apparatus, An object of the present invention is to provide an integrated actuator for an optical system capable of further improving the efficiency of each function by innovating the structure and further dramatically optimizing the space utilization in the apparatus.

Other objects and advantages of the present invention will become apparent from the following description, and it will be apparent from the description of the embodiments of the present invention. Further, the objects and advantages of the present invention can be realized by a combination of the constitution shown in the claims and the constitution thereof.

According to an aspect of the present invention, there is provided an integrated actuator for an optical system, including: an OIS carrier moving in first and second directions perpendicular to an optical axis and having a magnet; An OIS coil provided in a direction opposite to the magnet to generate an electromagnetic force in the magnet; An AF carrier accommodated in the OIS carrier and moving in the optical axis direction and having an AF coil on the outer periphery; A conductive ball interposed between a lower portion of the OIS carrier and a lower portion of the housing; A lower ball plate of a conductive material electrically connected to the external power source and being in contact with the ball; And an upper ball plate of a conductive material, which is in contact with the ball and is electrically connected to the AF coil.

In addition, the present invention may further comprise at least one leaf spring connected to the AF carrier and the OIS carrier to elastically support the AF carrier. In this case, the leaf spring of the present invention may be configured to be electrically connected to the AF coil, and the upper ball plate may be electrically connected to the leaf spring.

Further, the present invention may further comprise a connector for electrically connecting the ball plate and the leaf spring. In this case, the connector of the present invention includes: a body portion electrically connected to the leaf spring; And a connection portion extending from the both ends of the body portion and electrically connected to a plurality of the upper ball plates.

Preferably, the upper ball plate of the present invention comprises: a connecting portion to be in contact with the ball; And a connection extension portion extending upward. In this case, the connection connection portion of the connector of the present invention may be configured to be electrically connected to the connection extension portion.

For the implementation of the more preferred embodiment, the connector of the present invention can be composed of first and second connectors, in which case the first connector is connected to two upper ball plates having the same first polarity, The connector may be configured to couple with two upper ball plates having the same second polarity.

In addition, the magnet of the present invention may be provided at four positions on the outer circumferential portion of the OIS carrier so as to be mutually symmetrical with respect to the first direction and the second direction. In this case, the magnet may be provided under the housing corresponding to each of the four magnets. And four yokes for generating attraction force in each of the four magnets.

Furthermore, the present invention may further comprise a conductive lubricating member applied between the ball and the lower ball plate or between the ball and the upper ball plate.

INDUSTRIAL APPLICABILITY The integrated actuator for an optical system according to the present invention can further improve the space utilization of the apparatus by organically arranging the configuration for implementing the autofocus function and the configuration for compensating for the shaking motion and further optimizing the weight and size of the apparatus .

According to a preferred embodiment of the present invention, the structure of the device can be further simplified by implementing the magnet to be shared by the driving force by the electromagnetic force.

According to another preferred embodiment of the present invention, the OIS carrier is configured to be in point contact with the ball means, and the point contact can be maintained through attraction between the magnet and the yoke, so that the XY plane of the OIS carrier The phase movement and the position control can be realized more accurately and effectively and the carrier on which the lens is mounted can be more effectively guided to return to the original position by arranging the magnet and the yoke to be exactly symmetrical

Further, according to another preferred embodiment of the present invention, a structure for applying external power to the AF carrier provided in the OIS carrier is implemented by using a ball means for the function of the OIS, It is possible to provide an actuator having a structure optimized for miniaturization and weight reduction of the device.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the detailed description of the invention given below, serve to better understand the technical idea of the invention, And shall not be construed as limited to such matters.
BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an exploded view showing a detailed configuration and a coupling relationship of an optical integrated actuator according to a preferred embodiment of the present invention; Fig.
FIG. 2 is a diagram illustrating the coupling relationship of the OIS carrier 120 and adjacent configurations shown in FIG. 1,
3 is a view showing the coupling relationship of the housing 190 and the adjacent structure shown in FIG. 1,
FIG. 4 is a plan view and a sectional view showing the structure of an optical integrated actuator according to a preferred embodiment of the present invention,
5 and 6 show a structure in which an external power source is electrically connected to a coil of the AF carrier 130,
7 is a view showing the structure of an optical integrated actuator according to a preferred embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and are not intended to represent all of the technical ideas of the present invention. Therefore, various equivalents It should be understood that water and variations may be present.

The optical integrated actuator (hereinafter referred to as 'actuator') 100 of the present invention includes an OIS coil 110, an OIS carrier 120, The AF carrier 130, the ball 140, the lower ball plate 150, the upper ball plate 160, the leaf spring 170, the connector 180, the housing 190, the yoke 195, As shown in FIG.

The actuator 100 of the present invention includes a housing 190 having an inner space formed therein to accommodate the structure of the present invention to be described later, and a shield can 210, which is coupled to the upper portion of the housing 190, (60).

As described later, the actuator 100 of the present invention is applied to power from the outside for the OIS driving, and can be connected to other components of the device (smart phone or the like) to which the actuator 100 of the present invention is mounted, The terminals 186 of the (flexible) circuit board 185 are exposed to the outside of the housing 190 for efficient interfacing of power, signals, data, etc., since signals and data input / It is preferable to implement it in the form of

As shown in the drawing, the Z axis is an axial direction indicating an optical axis, and a direction in which a lens moves linearly for focus adjustment or the like, and the X axis and Y axis mean both axial directions of a plane perpendicular to the optical axis. In the following description, the first direction and the second direction are directions orthogonal to each other as the directions of both axes on the X-Y plane perpendicular to the optical axis.

As shown in FIG. 1, the AF carrier 130 of the present invention is provided with a mounting space 133 at the center thereof. The lens assembly 50 is coupled to the mounting space 133, The AF carrier 130 of the present invention cooperates with the lens assembly 50 in its physical movement.

When an external power source is applied to the AF coil 131, a driving force is generated by an electromagnetic force due to an interaction with the magnet 122, which will be described later, when the external power source is applied to the AF coil 131. [ And the AF carrier 130 linearly moves forward or backward with respect to the optical axis Z direction.

The OIS carrier 120 of the present invention has a coupling space 121 formed at the center thereof and the AF carrier 130 is accommodated in the OIS carrier 120 through the coupling space 121. That is, the present invention has a structure in which an OIS carrier 120 is provided on the outside and an AF carrier 130 is provided on the inside thereof.

FIG. 2 is a view showing a coupling relationship between the OIS carrier 120 and adjacent structures shown in FIG. 1, and FIG. 3 is a view showing a coupling relationship between the housing 190 and related configurations of the present invention.

The AF carrier 130 and the OIS carrier 120 are provided on the upper portion and / or the lower portion of the AF carrier 130 such that the AF carrier 130 is physically resiliently supported with respect to the OIS carrier 120, And at least one leaf spring 170 for elastically supporting the AF carrier 130 is provided.

The leaf spring 170 having a shape as illustrated in FIG. 2 can be detachably coupled to the AF carrier 130 through a first coupling hole 171 provided inside, and a second coupling And can be detachably coupled to the OIS carrier 120 through the hole 173.

The AF carrier 130 moves forward and backward in the optical axis direction when power of a predetermined magnitude and direction for automatic focus adjustment is applied to the AF coil 131. When the supply of power to the AF coil 131 is stopped, Is restored to its original reference position by the resilient restoring force of the leaf spring (170).

Since the OIS carrier 120 according to the present invention may have various shapes, the OIS carrier 120 may have a rectangular shape as a whole because the positional movement due to the camera-shake and the positional correction thereof are performed in both directions orthogonal to each other with reference to the XY plane. .

The magnet 122 of the present invention is provided in the OIS carrier 120 and when an appropriately sized power source is applied to the OIS coil 110 by feedback control corresponding to the position correction, an electromagnetic force is generated in the OIS coil 110 And this electromagnetic force is transmitted to the magnet 122, thereby causing the OIS carrier 120 to move.

Since the movement of the OIS carrier 120 can be defined as a combination of the first direction and the second direction, the magnet 122 of the present invention can also be provided in the OIS carrier 120 in the first direction and the second direction, do.

Since the OIS carrier 120 may move in the first and second directions, the magnets 122 may be provided in the first direction and the second direction, but the load and the volume of the actuator 100 may be balanced. In order to improve the accuracy of the position control and to realize the feedback control more precisely in relation to the OIS coil 110, the magnet 122 has a first direction and a second direction as reference As shown in Fig. Meanwhile, a back yoke 124 may be further provided on the back surface of the magnet 122, that is, in a direction opposite to the coil, in order to prevent external leakage of magnetic force and to concentrate the magnetic leakage.

Since the electromagnetic force for moving the AF carrier 130 in the optical axis direction and the electromagnetic force for moving the OIS carrier 120 in the first or second direction are made through the common magnet 122, The individual magnets for the OIS do not need to be provided individually, and the efficiency of device implementation can be further improved.

Since the OIS coil 110 of the present invention corresponds to a driving unit that transmits a force to the magnet 122 described above, the OIS coil 110 is provided in a direction opposite to each of the magnets 122. When four magnets 122 are implemented, The OIS coil 110 may also be implemented in four to transmit the driving force to each magnet.

The sensor 197 (see FIG. 4) of the present invention can detect the position of each of the first and second directions of the OIS carrier 120 on the basis of the first and second directions The angular position of the magnet in the first direction and the second direction), and outputs the sensed value.

A drive module or chip (not shown), which may be provided externally, measures the size of a power source applied to each OIS coil 110 provided in the first direction and the second direction according to the sensing value of each hall sensor 197, Or direction of the vehicle.

Since the magnitude and direction of the power applied to the OIS coil 110 provided in each direction are determined by the value output from the sensor 197 and the corresponding electromagnetic force is generated, The carrier 120 moves in the first direction and the second direction, respectively, or in a combined direction.

Since the sensing of the position of the sensor 197 in the direction of the sensor 197, the applied power control according to the sensed result, and the generation of the electromagnetic force and accordingly the movement of the OIS carrier 120 can be performed through cyclic processing, The position is precisely feedback controlled.

The actuator 100 according to the present invention includes a ball 140 as shown in the figure and the like and the ball 140 is interposed between the lower portion of the OIS carrier 120 and the lower portion of the housing 190 .

That is, the OIS carrier 120 of the present invention is placed on the ball 140 while making point contact at the top of the ball 140, and moves in the X-Y plane direction on the ball 140. Since the OIS carrier 120 is in point contact with the ball 140 as described above, the OIS carrier 120 can move with minimal frictional force.

As described above, in the case where four magnets 122 are formed, it is preferable that the balls 140 are positioned between each of the four magnets 122 so as to increase the space utilization and minimize the physical disturbance of the magnetic force The OIS carrier 120 of the present invention may be provided with a ball support 123 at the corner of the OIS carrier 120 with the lower bottom surface of the ball supporting the ball 140. Considering the distance between the OIS carrier 120 and the lower surface of the housing 190 and the attractive force between the magnet 122 and the yoke 1950 and the like, the ball support 123 is supported by the OIS carrier 120 at a position higher than the lowermost end thereof.

In order to more precisely control the position of the OIS carrier 120, it is more preferable that the OIS carrier 120 keeps the point contact with the ball 140 continuously and not from the ball 140.

The yoke 195 according to the present invention is provided in a coupling groove portion 194 formed in a lower portion of the housing 110 as shown in the figure and is provided at a position corresponding to the position where the magnet 122 is provided. The yoke 195 generates magnetic attraction with the magnet 122 provided in the OIS carrier 120 separated by the ball 140 as a magnetic body such as a metal so that the OIS carrier 120 is separated from the ball 140 So that the ball 140 is continuously brought into point contact with the ball 140.

In order to increase the precision of balance and position control of the load and the like, when the magnet 122 is composed of four as described above, the yoke 195 is also provided with four yokes .

When the yokes 195 are formed to correspond to the magnets 122, the force for pulling down the OIS carrier 120 is uniformly generated, so that the OIS carrier 120 is inclined or tilted It is possible to effectively prevent the phenomenon of < RTI ID = 0.0 >

The present invention can be applied to the AF coil 130 of the AF carrier 130 accommodated in the OIS carrier 120 such as a ball 140 which is in contact with the OIS carrier 120 and induces the OIS carrier 120 to move in the XY plane, The structure and the space utilization of the device are further optimized.

To this end, the ball 140 of the present invention described above is implemented with a conductive material that conducts electricity. In this regard, a lower ball plate 150, which is made of a plate-like conductive material and is electrically connected to an external power source and is in contact with the ball 140, is provided below the ball 140. The lower ball plate 150 may be electrically connected to the FPCB 185 and external power may be supplied through the FPCB 185.

3, a portion of the ball 140 is received in the lower portion of the housing 190 of the present invention at a position corresponding to the ball 140 or the ball support 123, A receiving groove 191 for preventing the receiving groove 191 is provided.

When the lower ball plate 150 electrically coupled to the FPCB 185 is coupled through the fitting hole 193, the lower ball plate 150 is inserted into the lower ball plate 150, (150) is positioned on the bottom surface of the receiving groove (191).

The lower ball plate 150 of the present invention is brought into point contact with the ball 140 at the lower side of the ball 140 located in the receiving groove 191 and thus the electrical connection between the external power supply and the ball 140 .

In addition, a plate-shaped upper ball plate 160 having a conductive material, which is electrically connected to the above-described AF coil 131, is provided in the upper direction of the ball 140 in correspondence with the ball 140. As long as the upper ball plate 160 and the AF coil 131 can be electrically connected to each other, various embodiments including mutual connection by wires as well as embodiments of the present invention to be described later are of course possible.

The external power is applied to the AF coil 131 through the path of the FPCB 185 → the lower ball plate 150 → the ball 140 → the upper ball plate 160 → the AF coil 131.

In order to more effectively realize the structure in which the external power source is applied to the AF coil 131, the leaf spring 170 of the present invention is configured to be electrically connected to the AF coil 131, And may be electrically connected to the leaf spring 170.

The leaf spring 170 can be easily connected to the AF coil 131 wound around the AF carrier 130 because it is coupled with the AF carrier 130 to elastically support the AF carrier 130 as described above. The ends of the AF coil 131 and the leaf spring 170 may be electrically connected to each other by soldering, adhesion with a conductive adhesive, or the like.

As shown in FIG. 2, the upper ball plate 160 of the present invention includes a plate-shaped connection portion 161 which is in point contact with the ball 140 and a connection extension portion (not shown) extending upwardly from the connection portion 161 163).

The upper ball plate 160 is coupled to the bottom of the ball support 123 and the connection extension portion 163 of the upper ball plate 160 is configured to pass through a through hole (not shown) formed in the ball support 123 5 and 6, the ball support 123 may have a bent shape corresponding to the outer periphery thereof.

The connector 180 of the present invention corresponds to a member for electrically connecting the upper ball plate 160, particularly, the connection extension portion 163 and the leaf spring 170. Since the upper ball plate 160 and the leaf spring 170 are electrically connected to each other by the connector 180, the external power is supplied through the FPCB 185, the lower ball plate 150, the ball 140, 160 to the connector 180 through the plate spring 170 and the AF coil 131. [

The connector 180 of the present invention includes a body portion 80 electrically connected to the leaf spring 170 and a plurality of upper ball plates 170 extending from both ends of the body portion 80. [ And a connection connection portion 81 electrically connected to the first and second connection portions 160 and 160.

When the connector 180 is constructed as described above, the connector 180 is electrically connected to the leaf spring 170 while being electrically connected to the two upper ball plates 160, Even if the electric connection is unstable due to a phenomenon that the electric contact 160 is separated from the ball 140, power can be supplied by the upper ball plate 160 on the other side, thereby realizing a more reliable electrical connection relationship .

Further, the connector 180 is divided into a first connector 180-1 and a second connector 180-2, and the first connector 180-1 is divided into two upper portions having the same first polarity (for example, an anode) The second connector 180-2 is electrically connected to the ball plate 160 and the two upper ball plates 160 having the same second polarity (for example, a negative polarity) opposite to the first polarity, As shown in FIG.

4 is a plan view and a cross-sectional view showing the structure of the actuator 100 according to the preferred embodiment of the present invention.

4, the actuator 100 of the present invention has an OIS coil 110 located at the outermost position, a magnet 122 provided in the OIS carrier 120 is placed inside the actuator 100, The coil 131 is located at the innermost position.

As described above, the driving force in the direction of the optical axis for AF, i.e., automatic focusing, is generated by the electromagnetic force between the AF coil 131 and the magnet 122, and the driving force in the first and / Is generated by the electromagnetic force between the OIS coil 110 and the magnet 122.

The present invention can be applied to a structure in which the magnets 122 are positioned between the OIS coil 110 and the AF carrier 130 so that the magnets 122 are shared by the OIS coil 110 and the AF carrier 130, It is possible to further increase the space utilization.

5 and 6 are views showing a structure in which an external power source is electrically connected to a coil of the AF carrier 130. FIG. As shown in the drawing, the present invention can be applied to an AF coil 131 (not shown) of an AF carrier 130 positioned inside an OIS carrier 120 by organically using a configuration for driving an OIS carrier 120 without additional PCB or other complicated configuration. So that the power is effectively applied.

As described above, the first connector 180-1 and the second connector 180-2 are electrically connected to the two balls 140 and the related structure, respectively, so that stable power supply and circuit loop formation are possible.

As shown in the drawing, the first connector 180-1 electrically connected to one end of the AF coil 131 through the leaf spring 170 is electrically connected to the two upper ball plates 160 in the downward direction . The two upper ball plates 160 are electrically connected to the two balls 140. The two balls 140 are electrically connected to the FPCB 185 by an external power source, And comes into electrical contact with the ball plate 150.

The second connector 180-2 also has a corresponding electrical connection structure, and the power source of the electrode opposite to the first connector 180-1 is connected to the second connector 180-2 so that a circuit loop for supplying power to the AF coil 131 .

A conductive lubricant such as grease is applied between the upper ball plate 160 and the ball 140 and / or between the lower ball plate 150 and the ball 140 in order to maintain the electrical connection and minimize frictional force. Is more preferable.

The plate spring 170 and the connector 180 may be electrically connected to each other using a conductive epoxy or the like and the lower ball plate 150 and the FPCB 185 may be electrically connected to each other. Conductive epoxy, soldering, or the like.

7 is a view showing a configuration of an optical integrated actuator according to a preferred embodiment of the present invention.

As described above, a magnetic force is generated between the yoke 195 provided under the housing 190 and the magnet 122 provided in the OIS carrier 120, so that the OIS carrier 120 is housed in the housing 190 As shown in FIG.

Since the ball 140 is interposed between the lower portion of the housing 190 of the OIS carrier 120, the OIS carrier 120 closely contacts the housing 190 while maintaining a distance corresponding to the diameter of the ball 140 The upper ball plate 160 and the balls 140 and the balls 140 and the lower ball plate 150 provided in the OIS carrier 120 also effectively maintain their electrical contact.

Although not shown in the drawing, under the actuator 100 of the present invention, there is provided an image sensor and an image processor such as a CMOS or a CCD for converting a light signal input through a lens into an electrical signal And a filter 70 for filtering the light signal may further be provided between the lens and the image sensor (processor).

In the above description of the present invention, the first and second modifiers are merely terms of a tool concept used for relatively separating the components of each other, so that they are used to indicate a specific order, priority, etc. It should be interpreted that it is not a terminology.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not to be limited to the details thereof and that various changes and modifications will be apparent to those skilled in the art. And various modifications and variations are possible within the scope of the appended claims.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. It should be understood that various modifications may be made in the ordinary skill in the art.

100: Actuator
110: OIS coil 120: OIS carrier
122: Magnet 123: Ball support
130: AF carrier 131: AF coil
140: ball 150: lower ball plate
160: upper ball plate 161:
163: connection extension part 170: leaf spring
180: Connector 185: FPCB
190: housing 191: accommodating groove
195: yoke 197: sensor

Claims (9)

An OIS carrier moving in first and second directions perpendicular to the optical axis and having a magnet;
An OIS coil provided in a direction opposite to the magnet to generate an electromagnetic force in the magnet;
An AF carrier accommodated in the OIS carrier and moving in the optical axis direction and having an AF coil on the outer periphery;
A conductive ball interposed between a lower portion of the OIS carrier and a lower portion of the housing;
A lower ball plate of a conductive material electrically connected to the external power source and being in contact with the ball; And
And an upper ball plate of a conductive material that is in contact with the ball and is electrically connected to the AF coil. The method according to claim 1,
Further comprising at least one leaf spring connected to the AF carrier and the OIS carrier to elastically support the AF carrier. 3. The apparatus according to claim 2,
An AF coil,
And the upper ball plate is electrically connected to the leaf spring. The method of claim 3,
Further comprising a connector for electrically connecting the upper ball plate and the leaf spring. 5. The connector according to claim 4,
A body portion electrically connected to the leaf spring; And
And a connecting connection portion extending from each end of the body portion and electrically connected to a plurality of the upper ball plates. [6] The apparatus of claim 5,
A connecting portion to be in contact with the ball; And
And a connection extension portion extending upward from the connection portion,
And the connector connection portion of the connector is electrically connected to the connection extension portion. 6. The connector according to claim 5, wherein the connector comprises a first connector and a second connector,
The first connector is connected to two upper ball plates having the same first polarity,
And the second connector is connected to two upper ball plates having the same second polarity. The magnetron according to claim 1,
The OIS carrier includes four OIS carriers arranged symmetrically with respect to the first direction and the second direction on the outer circumferential portion of the OIS carrier. The OIS carrier is provided under the housing corresponding to each of the four magnets, Further comprising four yokes. ≪ RTI ID = 0.0 > 11. < / RTI > The method according to claim 1,
Further comprising a conductive lubrication member applied between the ball and the lower ball plate or between the ball and the upper ball plate.
KR1020150049529A 2015-04-08 2015-04-08 Optical integral actuator KR101679785B1 (en)

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KR101679785B1 KR101679785B1 (en) 2016-11-28

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110998433A (en) * 2017-08-07 2020-04-10 Lg伊诺特有限公司 Lens driving device, camera module, and optical apparatus
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CN110998433A (en) * 2017-08-07 2020-04-10 Lg伊诺特有限公司 Lens driving device, camera module, and optical apparatus
CN110998433B (en) * 2017-08-07 2022-11-25 Lg伊诺特有限公司 Lens driving device, camera module, and optical apparatus
US11543622B2 (en) 2017-08-07 2023-01-03 Lg Innotek Co., Ltd. Lens driving apparatus, camera module, and optical device
CN110998433B9 (en) * 2017-08-07 2023-01-31 Lg伊诺特有限公司 Lens driving device, camera module, and optical apparatus
KR20220105759A (en) * 2021-01-21 2022-07-28 자화전자(주) Actuator for reflector

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