WO2017105010A1 - Actionneur optique - Google Patents

Actionneur optique Download PDF

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Publication number
WO2017105010A1
WO2017105010A1 PCT/KR2016/014023 KR2016014023W WO2017105010A1 WO 2017105010 A1 WO2017105010 A1 WO 2017105010A1 KR 2016014023 W KR2016014023 W KR 2016014023W WO 2017105010 A1 WO2017105010 A1 WO 2017105010A1
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WO
WIPO (PCT)
Prior art keywords
ois
carrier
housing
ois carrier
coil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2016/014023
Other languages
English (en)
Korean (ko)
Inventor
설진수
이병철
고재용
박병찬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jahwa Electronics Co Ltd
Original Assignee
Jahwa Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jahwa Electronics Co Ltd filed Critical Jahwa Electronics Co Ltd
Publication of WO2017105010A1 publication Critical patent/WO2017105010A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/64—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image
    • 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
    • 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
    • G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • 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
    • H02K33/02—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs

Definitions

  • the present invention relates to an actuator for a camera module mounted on a portable terminal, and more particularly, to an integrated actuator for optics that implements an autofocus function and a hand shake correction function as a single actuator.
  • the autofocusing function refers to a function of generating a clear image in the image sensor provided at the rear end of the lens by adjusting the focal length with the subject by linearly moving the lens assembly in the optical axis direction.
  • the image stabilization function refers to a function of correcting a phenomenon in which an image is disturbed or blurred due to an environment such as vibration or shake, such as a user's hand shake, affecting the sharpness (sharpness) of an image.
  • the technique of physically correcting the position is called Optical Image Stabilization (OIS).
  • the mobility of the terminal itself is large, and hand and arm tremors generated in the human body can be easily transmitted to the camera module. It can be said that it is relatively more frequent when the shooting environment is not fixed, such as photographing the image of the holder himself / herself.
  • the moving body and the high body are used to implement the flow of the moving body and restore the moving body to its original reference position.
  • a method of connecting stagnation with a suspension wire is used.
  • the suspension wire may cause problems such as bending or breaking due to external shock or vibration, and since the suspension wire is formed in the form of a thin wire, there is a problem in that the stiffness is easily changed when used for a long period of time.
  • the movable body in the assembling process of connecting the stationary body and the movable body with the suspension wire, the movable body must be spaced apart or floated from the fixed body, and thus, a separate dedicated jig for maintaining the state and performing the assembly process. May have the disadvantage that the process efficiency is low and the assembly process takes considerable time.
  • Patent Document 1 Korea Patent Publication No. 2015-0054719 (2015.05.20)
  • Patent Document 2 Korean Patent Publication No. 2012-0097122 (2012.09.03)
  • the present invention was devised to solve the above problems in the background as described above, by implementing a structure for the flow of the OIS carrier (removable body) and the restoration to the original position in the shape of the elastic form, as well as improving the efficiency of the assembly process
  • the aim is to provide an optical actuator that can more effectively implement OIS driving and further improve product reliability and durability.
  • Optical actuator of the present invention for achieving the above object is an AF carrier moving in the optical axis direction; An OIS carrier moving in the vertical direction of the optical axis and mounted with the AF carrier; A housing in which the OIS carrier is accommodated; And one end is connected to the OIS carrier, the other end may be configured to include a standing-type elastic body connected to the base of the housing.
  • the elastic body of the present invention is more preferably implemented as a coil spring.
  • the OIS carrier or the base of the housing of the present invention may be configured to include a protrusion support to which the coil spring is fitted, in this case is provided inside the coil spring, the first protrusion provided in the OIS carrier It is preferable to comprise so that the lower surface of the support and the ball facing the upper surface of the second protrusion support provided on the base of the housing.
  • the first protrusion support provided in the OIS carrier and the second protrusion support provided in the base of the housing may be configured to face each other, the first and second protrusion support It is more preferable that one end of each of the ends to be treated has a rounded shape.
  • the OIS carrier of the present invention is provided with an OIS magnet, in which case the housing of the present invention is provided in a direction opposite to the OIS magnet OIS coil for generating an electromagnetic force on the OIS magnet; And it may be configured to include a sensor for sensing the position of the OIS carrier.
  • the AF carrier of the present invention may be provided with an AF magnet, and in this case, the OIS carrier may be provided in a direction opposite to the AF magnet, and may be provided with an AF coil for generating electromagnetic force in the AF magnet.
  • the housing of the present invention may further include a first plate provided on the base and electrically connected to an external power source, in which case the OIS carrier of the present invention is electrically connected with the AF coil. Further comprising a second plate, wherein the coil spring is made of a conductive material and is configured to electrically connect the first plate and the second plate.
  • the housing of the present invention may further include a first plate provided on the base and electrically connected to an external power source or an external AF control unit, in which case the OIS carrier senses the position of the AF carrier.
  • a second plate electrically connected to the AF coil or the hall sensor, and the coil spring made of the conductive material may be configured to electrically connect the first plate and the second plate.
  • the optical actuator of the present invention comprises: an AF carrier moving in the optical axis direction; An OIS carrier moving in the vertical direction of the optical axis and mounted with the AF carrier; A housing in which the OIS carrier is accommodated; A protruding support provided on at least one of the OIS carrier or the base of the housing and protruding in the optical axis direction; And a coil spring coupled to the protruding support and connected to the base of the OIS carrier and the housing.
  • Optical actuator according to an embodiment of the present invention by using the elastic body having a shape that can be installed in itself to physically support the relative flow due to vibration, shaking, etc. of the OIS carrier (moving body), as well as restore to the original position Since the alignment is elastically implemented, it can have more robust characteristics such as dropping and impact, thereby creating an effect of dramatically increasing durability and reliability.
  • the OIS carrier can be directly coupled or seated on the housing (fixed body) in parts-to-parts, which eliminates the need for a dedicated jig or the like, thereby increasing process efficiency and horizontally aligning the OIS carrier. It can be implemented more effectively can provide an advantage that can dramatically lower the tilt failure rate of the moving object.
  • a structure or a hole for applying an external power source to the AF coil provided inside the OIS carrier using only a simple structure that is organically coupled with the elastic material of the conductive material for the function of the OIS.
  • the OIS carrier can be configured to be point-contacted with the ball means and the point contact can be maintained through the attraction between the magnet and the yoke.
  • In-plane movement and position control of the OIS carrier can be implemented more accurately and effectively, and the carrier on which the lens is mounted can be more effectively induced to return to the original position.
  • FIG. 1 is an exploded coupling diagram showing a detailed configuration and coupling relationship of an optical actuator according to a preferred embodiment of the present invention
  • FIG. 2 is a view showing a detailed configuration of the OIS carrier and the housing and their coupling relationship
  • FIG. 3 is a view illustrating an elastic body of a standing-type form of the present invention and an OIS carrier coupled thereto;
  • Figure 4 is a view showing various embodiments of the standing body of the elastic body and the protrusion support of the present invention
  • FIG. 5 illustrates an AF carrier and related configuration according to an embodiment of the present invention
  • Fig. 6 is a diagram showing a preferred embodiment of the present invention showing an application structure of a power supply for AF driving.
  • the optical actuator (hereinafter, referred to as 'actuator') 1000 of the present invention is an actuator in which the auto focus function and the image stabilization function are implemented.
  • the AF carrier 100 and the OIS carrier 200 are shown.
  • the housing 300 and the elastic body 400 and may include a shield can 500 coupled to an upper portion of the housing 300 in which the inner space is formed to perform a function such as insulation between the case and the outside. have.
  • the actuator 1000 of the present invention is provided with a circuit board (flexible circuit board (FPCB)) 350 on the side of the housing 300, as shown in Figure 1, etc., the power for driving the OIS from the outside is applied, Since a signal or data input / output or the like is performed with another configuration of a device (such as a smartphone) on which the actuator 1000 of the present invention is mounted or with a drive chip for position feedback control by the hall sensor 197, power, signal, data, etc.
  • the terminal 351 of the FPCB 350 is preferably implemented to be exposed to the outside of the housing 300 for effective interfacing.
  • the Z axis refers to the direction in which the lens is moved forward or backward for focusing, etc.
  • the X axis and the Y axis are in the plane perpendicular to the optical axis.
  • the first direction and the second direction mean directions perpendicular to each other as both axis directions on the X-Y plane perpendicular to the optical axis.
  • the AF carrier 100 of the present invention linearly moving in the optical axis direction is provided with a mounting space 110 in the center portion, the lens assembly (not shown) is coupled to the mounting space 110, as seen by such a combination
  • the AF carrier 100 of the present invention is to move the lens assembly and the physical movement together.
  • the AF carrier 100 and the AF driving will be described later.
  • the OIS carrier 200 accommodates the AF carrier 100 and has a first direction (X axis direction) or a second direction (a plane formed by the X axis and the Y axis) perpendicular to the optical axis. In the direction of a combination of the Y-axis direction).
  • the OIS carrier 200 may form various shapes as a whole, but the movement of the position due to the shaking and the position correction thereof are made in both directions perpendicular to each other on the basis of the XY plane, so that the OIS carrier 200 has a rectangular shape as a whole. desirable.
  • an inner space is formed at a center portion, and the inner space is a space in which the OIS carrier 200 is mounted and the OIS carrier 200 is shaken or vibrated in a first direction or a second direction. It provides a moving space to move in the direction.
  • the elastic body 400 of the present invention is connected to the base 370 side of the housing 300 and the other end is connected to the OIS carrier 200 to fix the housing 300.
  • the point is to elastically support the flow, movement, correction movement, home position restoration movement, etc. of the OIS carrier 200.
  • the base 370 of the housing 300 means an inner bottom portion of the housing.
  • the housing 300 includes an OIS coil 320 and a hall sensor 330.
  • the OIS coil 320 generates an electromagnetic force corresponding to the magnitude and direction of the power applied from the outside, and when the electromagnetic force is transmitted to the OIS magnet 220 provided in the OIS carrier 200, the OIS coil 320 is applied to the magnitude and direction of the generated electromagnetic force.
  • the OIS carrier 200 is moved by this.
  • the hall sensor 330 senses the position of the OIS carrier 200 based on the first and second directions using a hall effect and outputs the sensing value.
  • the Hall sensor 330 is located in the center portion of the OIS coil 320 in the drawing, it may be located in the base portion of the housing 300 according to the embodiment, and the yoke 340 to be described below is dualized. It may be configured to be located in the portion in between.
  • the drive module or chip (not shown), which may be provided externally, controls the power supply (size and direction) to be applied to the OIS coil 320 when a sensing value is input from the hall sensor 330.
  • the actuator 1000 of the present invention recognizes the position value of the Hall sensor 330, applies power corresponding to the position value, generates electromagnetic force by the applied power, and generates a magnet (OIS carrier) 200 by the generated electromagnetic force. Since the movement process is configured to be feedback-controlled through the cyclic processing, the correction due to the shaking of the OIS carrier 200 can be accurately and precisely performed.
  • the Hall sensor 330 is provided in each of the first and second directions as shown in FIGS. 1 and 2.
  • the OIS coil 320 and the OIS magnet 220 are also preferably provided in each of the first and second directions.
  • the OIS coil 320 and the OIS magnet 220 may be provided one by one in the first and second directions.
  • the OIS magnet 220 and the OIS coil 320 may be provided in plurality so as to be symmetrical with respect to each of the first direction and the second direction in order to implement load balance and position control more quickly and precisely.
  • the OIS coil 320 corresponding to one OIS magnet 220 may be divided into plural, and correspondingly, the OIS magnet 220 corresponding to one OIS coil 320 may be divided into plural.
  • a back yoke (not shown) may be further provided on the rear surface of the OIS magnet 220, that is, in the opposite direction of the coil, to prevent external leakage of magnetic force and to concentrate magnetic force.
  • the elastic body 400 of the present invention has one end connected to the housing 300 base 370 side, and the other end connected to the OIS carrier 200 side to fix the housing 300 to the fixed end.
  • the OIS carrier 200 elastically supports movement, correction movement, and position restoration movement.
  • the elastic body 400 of the present invention has a shape of being vertically placed in the vertical direction (optical axis direction), the lower part of which is on the base 370 side of the housing 300, and the upper part of the OIS carrier 200. It is connected to the lower part or the side lower part.
  • the elastic body 400 of the present invention is embodied in a form (such as a cylinder) in which the elastic body can be placed.
  • the elastic body 400 of the present invention is vertically placed, that is, has a standing shape, the elastic body 400 is coupled to the housing 300 side, and then the OIS carrier 200 is lowered from the top of the housing 300. Since the assembly process can be performed by only a simple operation of seating on the upper portion of the elastic body 400 in the direction, there is no need for a special dedicated jig for maintaining the floating of the OIS carrier 200 like the conventional wire type actuator. The assembly process can be made simpler.
  • the OIS carrier may be simply mounted on the elastic body 400 having the same height as it is. It is possible to accurately implement the horizontal balance of the (200) can minimize the defect rate of tilt (tilt) of the OIS carrier 200.
  • the elastic body 400 of the present invention is an elastic body having a shape in which the movement, correction movement, restoration movement, etc. of the OIS carrier 200 can be elastically supported based on the housing 300. It can be implemented in shape and material.
  • the elastic body 400 of the present invention may be implemented in the form of connecting the lower surface of the OIS carrier 200 and the upper portion of the base (bottom) of the housing 300, further increases the space utilization of the actuator 1000, the actuator 1000 As shown in the figure, the space of the lower part is opened in the corner portion of the OIS carrier 200 to realize the miniaturization of the volume to the height) and the more flexible movement of the OIS carrier 200. It is preferable to configure so that the elastic body 400 is located in this space.
  • the lower surface of the OIS carrier 200 and the bottom surface of the housing 300 so as not to be in contact with the housing 300 in order to allow the movement, correction movement, restoring movement, etc. due to vibration of the OIS carrier 200 to be made flexibly without friction. It may be said that it is desirable to maintain a state spaced a predetermined distance.
  • the height of the OIS carrier 200 the height of the edge portion of the OIS carrier 200 to which the elastic body 400 is connected, the separation distance between the housing 300 base 370 and the OIS carrier 200, the maximum shrinkage of the elastic body It is preferable to implement the elastic body 400 in consideration of the height of the city comprehensively.
  • the elastic body 400 of the present invention can be maintained in a standing state and can be implemented as a polymer material if compression / extension is possible, as well as in the form of a coil spring.
  • the elastic body 400 When the elastic body 400 is implemented as an elastic polymer material, it is preferable to implement the structure having a columnar shape or a hollow columnar shape having a hollow part in the middle so that the shape of the standing can be effectively maintained. It is preferable to implement the diameter of the center portion smaller than the end so that the movement of the carrier 200 is made more flexible.
  • the elastic body 400 of the present invention be implemented as a coil spring.
  • the elastic spring 400 when the coil spring is fully contracted, the elastic spring 400 will have the height of the coil spring itself, which is no longer contracted.
  • the coil spring having characteristics (length, size, etc.) in which the gap size between the OIS carrier 200 and the housing is considered.
  • the coil spring may be made of a metal material, of course, may also be implemented in a material such as plastic, and to implement a coil spring made of a conductive metal material to implement a structure for the internal application of an external power source, as described below. desirable.
  • the base of the OIS carrier 200 and the housing 300 according to the present invention includes an elastic body 400 as described above, that is, a protrusion support 210 into which the coil spring 400 is fitted. 310 may be provided.
  • the protruding support part provided in the OIS carrier 200 is provided by the first protruding support part 210, and the protruding support part provided in the lower part (base) of the housing 300 is supported by the second protruding support part 310.
  • the protrusion support (210, 310) is basically an elastic body, that is, when the coil spring 400 is connected to the OIS carrier 200 and the housing 300 performs a guiding function to facilitate the connection is made to the coil The assembly process of the spring 400 can be guided more easily and accurately.
  • the protruding supports 210 and 310 have the diameter of the coil spring 400 at the end as shown in the drawing so as to effectively maintain the fitted state of the coil spring 400 and to easily induce elastic deformation of the coil spring.
  • the middle portion is preferably implemented to be smaller than the diameter of the coil spring (400).
  • the housing 300 and the base 370 are provided at positions corresponding to the OIS magnet 220 provided in the OIS carrier 200 to generate an attraction force with the OIS magnet 220.
  • a yoke 340 may be provided.
  • the yoke 340 is made of a magnetic material such as a metal to generate an attraction between the OIS magnet 220 and the OIS carrier 200 is not separated to the outside by the generated attraction, and the movement, correction of the OIS carrier 200 After the movement, etc., the OIS carrier 200 is induced to be restored to its original position.
  • the required number of yokes 340 and OIS magnets 220 may be provided, and the shape is structurally symmetrical.
  • the yoke 340 also corresponds to each OIS magnet 220 so as to correspond thereto. It is preferred to have four in position.
  • the OIS carriers 200 are inclined or tilted since the force to pull the OIS carriers 200 downward is evenly generated. This phenomenon can be prevented more effectively.
  • the elastic body 400 is more preferably coupled in a state that is not the maximum shrinkage.
  • the elastic force of the elastic body 400 that is, the coil spring 400 is smaller than the attraction force of the yoke 340 and the OIS magnet 220 described above, the OIS carrier 200 comes into contact with the housing 300, thereby providing frictional force. Since this occurs, the movement of the OIS carrier 200 cannot be made flexibly.
  • the present invention may further include a ball 600, the ball 600 of the present invention, the first protrusion support 210, the second protrusion support 310 of the present invention described above
  • the attraction between the yoke 340 and the OIS magnet 220 corresponds to a configuration for preventing the OIS carrier 200 from contacting the housing 300.
  • the ball 600 of the present invention performs rolling movement (point) to the point contact (rolling) while maintaining the separation distance as much as the diameter of the ball 600 (movement, correction movement of the OIS carrier 200) Restoration movement is made more flexible and stable.
  • the sum E of the height A of the first protrusion support 210, the height B of the ball 600, and the height C of the second protrusion support 310 are OIS carriers. (200) When designed to be greater than the height (D) except the separation distance between the bottom surface and the housing 300 base top surface, even if the attraction force acting between the yoke 340 and OIS magnet 220 is no longer reduced It is possible to provide a physical support structure so that the OIS carrier 200 does not touch the base of the housing 300.
  • the ball 600 is provided on the base (bottom surface) of the housing 300 as well as the bottom surface of the first protrusion support 210. Since the point contact with the upper surface of the second protrusion support 310 to be maintained can be continued, when the OIS carrier 200 moves, corrected movement, restoring movement, the minimum frictional force by the point contact rolling motion of the ball 600 Of course, since the separation distance as much as the diameter of the ball 600 is maintained, the equilibrium state of the OIS carrier 200 is maintained as it is.
  • the ball 600 is preferably provided inside the coil spring 400 so as to prevent the departure to the outside as shown in the figure and according to the embodiment end of the first and second protrusion support (210, 310)
  • a stepped structure, a groove structure, and the like, may be formed in the ball 600 to prevent the ball 600 from being separated.
  • the first protrusion support part 210, the second protrusion support part 310, and the ball 600 may be implemented in various forms.
  • FIG. 4 illustrate a form in which the ball 600 is interposed between the first and second protrusion support portions 210 and 310, in which case the overall height can be maintained.
  • the height of each of the first and second protrusion support parts 210 and 310 may be changed in various ways.
  • a means such as a roller may be interposed between the first and second protrusion support parts 210 and 310 instead of a spherical ball.
  • (d) to (g) of FIG. 4 shows a form in which the ball 600 is not interposed, but since the ball 600 is not interposed, the friction force may be partially disadvantageous, but the first and second protrusion support parts may be used.
  • the OIS carrier 200 can be moved, corrected, restored, etc. in a state in which the lower surface of the OIS carrier 200 and the upper surface of the housing 300 are not in contact with each other. Can be implemented.
  • one end of each of the end portions of the first projecting support portion 210 and the second projecting support portion 310 is rounded (1 rod hemispherical shape, 2 rod hemispherical shape, etc.). ) So that the friction force can be effectively reduced.
  • the protrusion support may be provided on only one side of the OIS carrier 200 and the housing.
  • FIG. 5 is a diagram illustrating an AF carrier 100 and related configurations according to a preferred embodiment of the present invention.
  • the AF (Auto Focus) function corresponds to a function of linearly moving the lens in the optical axis direction so that a clearer image of the subject is generated by accurately matching a focal length with the subject.
  • the AF carrier 100 of the present invention is configured to move forward and backward in the optical axis (Z-axis direction in the drawing). As shown in the figure, the optical axis direction in the OIS carrier 200 based on the OIS carrier 200 is shown. And to move forward and backward.
  • the AF drive is provided with a coil on the stator side and a magnet on the mover side moving in the optical axis direction, and the moving body is moved by the direction of the electromagnetic force and the magnitude of the force generated between the coil and the magnet. And move forward or backward in the optical axis direction.
  • an AF control unit (driving drive chip) is installed on the side of the fixed body for sensing the position of the moving object (AF carrier) and controls the power of the required size and direction to be applied to the AF coil by receiving the sensing information or signal of the sensor.
  • AF controller driving drive chip
  • the AF controller may be installed inside the actuator as in the present invention, but may be generally installed outside the actuator, that is, the device on which the actuator is mounted (smartphone).
  • FIG. 5 illustrates a form in which a magnet is installed on the AF carrier 100 side and a coil is installed on the OIS carrier (fixing body) 200 side among the various AF driving forms described above, and is feedback-controlled by a hall sensor or the like. Since the other forms of AF driving described above are well known to those skilled in the art, the embodiment of the present invention described with reference to FIG. 5 may also be applied to other forms of AF driving.
  • the AF carrier 100 of the present invention is accommodated in the OIS carrier 200 and moves forward and backward in the optical axis direction (Z-axis direction) based on the OIS carrier 200 in the state.
  • An AF magnet 120 for AF driving is provided on the side of the AF carrier 100 of the present invention, and the AF coil 230 for AF driving in a direction opposite to the AF magnet 120 on the OIS carrier 200 side.
  • a second sensor 240 that is a hall sensor that senses the position of the AF carrier 100.
  • the AF carrier 100 is guided so that the vertical movement of the AF carrier 100 can be made smoothly, and the distance between the AF carrier 100 and the OIS carrier 200 can be kept constant.
  • Ball bearing 250 is provided between the), the AF carrier 100 or the OIS carrier 200 may be provided with a ball guide portion 130 to which the ball bearing 250 is guided.
  • the OIS carrier 200 is provided with an AF yoke that generates an attraction force in the AF magnet 120 so that the AF carrier 100 continuously maintains a constant height position while being in point contact with the ball bearing 250. Can be. By the attraction force generated between the AF yoke and the AF magnet 120, the AF carrier 100 does not fall to the bottom surface by gravity and maintains the current position.
  • the OIS magnet 220 for driving OIS is provided on the outer circumferential side of the OIS carrier 200, mutual attraction is generated by adjusting the polarity between the OIS magnet 220 and the AF magnet 120.
  • the OIS magnet 220 may perform the above-described AF yoke function so that the AF yoke may be omitted.
  • the base 370 of the housing 300 is provided with a circuit board (FPCB) 350 for electrical connection with an external power source or a driving drive chip (AF controller) as described above.
  • FPCB circuit board
  • AF controller driving drive chip
  • the first plate 360 shown in the drawing is made of a conductive material and is electrically connected to the circuit board 350.
  • the coil spring of the present invention (resilient form of the shape of the present invention) previously described above the first plate 360. 400 is electrically connected.
  • the first plate 360 and the circuit board may be formed by various methods, including a method in which the protrusion 361 of the first plate 360 is coupled to the connection part 352 of the circuit board 350. 350 can be electrically connected.
  • the coil spring may be connected to the first plate 360 through a method such as conductive epoxy or soldering, and the coil spring may be made of a metal of conductive material, or a conductive resin, fluid, or the like may be applied to transmit an electrical signal. have.
  • OIS carrier 200 of the present invention is provided with a second circuit board (FPCB) (270), the second circuit board 270 is a second sensing circuit for sensing the position of the AF carrier 100 through the patterning (patterning), etc. It is electrically connected to the two sensors 240 or / and the AF coil 230.
  • FPCB second circuit board
  • a second plate 260 electrically connected to the second circuit board 270 is provided below the second circuit board 270, and a coil spring of the present invention is placed below the second plate 260.
  • the elastic body 400 of the top is electrically connected.
  • the external power is supplied to the AF coil 230 through the path of the circuit board 350 ⁇ the first plate 360 ⁇ the coil spring 400 ⁇ the second plate 260 ⁇ the second circuit board 270. Is applied to.
  • the signal of the second sensor 240 is transmitted through the path of the second circuit board 270 ⁇ the second plate 260 ⁇ the coil spring 400 ⁇ the first plate 360 ⁇ the circuit board 350. It is delivered to the AF control unit (drive drive chip) that can be provided externally.
  • four coil springs and a corresponding number of first and second plates 360 and 260 may be provided, so that the coil springs may be electrically divided and correspond to the circuit board 350 and the second circuit board 270.
  • the patterning may be implemented so that power is applied through two paths, and the signal of the hall sensor may be interfaced through the two paths.
  • the wiring path for power supply using only the four coil springs and the first and second plates 360 and 260 described above may be used.
  • the wiring path may be implemented by dividing four coil springs and two first and second plates.
  • the second circuit board 270 electrically connected to the AF coil 230 and / or the second sensor 240 may be embedded in the OIS carrier 200.
  • the two plates 260 are coupled upwardly from the bottom of the OIS carrier 200, but the grooves 271 formed on the second circuit board 270 are formed by protruding portions 261 which are bent upwards as shown in FIG. 6. ) Can be configured to fit.
  • CMOS complementary metal-oxide-semiconductor
  • CD CD
  • the filter may further include a filter for filtering the light signal between the lens and the image sensor (processor).
  • first and second are only terms of a tool concept used to relatively distinguish the components from each other, and thus are used to indicate a specific order, priority, and the like. It should not be interpreted as being a term.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Adjustment Of Camera Lenses (AREA)

Abstract

L'invention concerne un actionneur optique qui comprend : un support d'autofocus (AF) qui se déplace dans la direction d'un axe optique; un support de stabilisation d'image optique (OIS) qui se déplace dans une direction perpendiculaire à l'axe optique et sur lequel est monté le support AF; un boîtier dans lequel est logé le support OIS; et un corps élastique de type montage dont une extrémité est reliée au support OIS et l'autre extrémité est reliée à une base du boîtier.
PCT/KR2016/014023 2015-12-15 2016-12-01 Actionneur optique Ceased WO2017105010A1 (fr)

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KR1020150179036A KR20170071097A (ko) 2015-12-15 2015-12-15 광학용 액추에이터
KR10-2015-0179036 2015-12-15

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WO2017105010A1 true WO2017105010A1 (fr) 2017-06-22

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WO2019008522A1 (fr) * 2017-07-04 2019-01-10 Actuator Solutions GmbH Actionneur de mise au point automatique pour module de caméra
KR20190035114A (ko) * 2017-09-26 2019-04-03 엘지이노텍 주식회사 렌즈 구동 장치, 및 이를 포함하는 카메라 모듈 및 광학 기기
EP3677941A4 (fr) * 2017-08-30 2021-06-02 LG Innotek Co., Ltd. Dispositif d'entraînement de lentille, et module de caméra et dispositif optique le comprenant
CN113194602A (zh) * 2021-05-10 2021-07-30 中山联合光电科技股份有限公司 一种柔性电路板、光学变焦镜头及电子设备
CN113452233A (zh) * 2021-07-21 2021-09-28 上海比路电子股份有限公司 一种大推力中置自动对焦马达
CN114080797A (zh) * 2019-07-17 2022-02-22 磁化电子株式会社 阻尼器和包括该阻尼器的相机用致动器
CN115037868A (zh) * 2021-03-04 2022-09-09 宁波舜宇光电信息有限公司 光学防抖感光组件及其组装方法
CN115085506A (zh) * 2021-03-12 2022-09-20 日本电产株式会社 线性致动器

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JP7039612B2 (ja) 2017-04-06 2022-03-22 エルジー イノテック カンパニー リミテッド レンズ駆動装置、これを含むカメラモジュール及び光学機器
KR102407675B1 (ko) * 2017-08-02 2022-06-13 엘지이노텍 주식회사 렌즈 구동 장치 및 이를 포함하는 카메라 모듈 및 광학 기기
KR102467391B1 (ko) * 2017-11-10 2022-11-14 엘지이노텍 주식회사 렌즈 구동 장치 및 이를 포함하는 카메라 모듈 및 광학 기기
KR102133280B1 (ko) * 2017-08-31 2020-07-13 자화전자(주) 광학용 액추에이터
KR102316053B1 (ko) * 2017-08-31 2021-10-22 자화전자(주) 광학용 액추에이터
EP4231092A4 (fr) 2020-10-15 2024-09-04 LG Innotek Co., Ltd. Appareil d'entraînement de lentille, et module d'appareil photo et dispositif optique le comprenant
KR102425123B1 (ko) * 2021-09-17 2022-07-27 자화전자(주) 센서 구동 액추에이터
CN121079986A (zh) * 2023-04-06 2025-12-05 Lg伊诺特有限公司 透镜致动器、摄像装置和光学仪器

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US10901173B2 (en) 2017-07-04 2021-01-26 Actuator Solutions GmbH Camera module autofocus actuator
WO2019008522A1 (fr) * 2017-07-04 2019-01-10 Actuator Solutions GmbH Actionneur de mise au point automatique pour module de caméra
US11467368B2 (en) 2017-08-30 2022-10-11 Lg Innotek Co., Ltd. Lens driving device, and camera module and optical device including same
EP3677941A4 (fr) * 2017-08-30 2021-06-02 LG Innotek Co., Ltd. Dispositif d'entraînement de lentille, et module de caméra et dispositif optique le comprenant
US11841546B2 (en) 2017-08-30 2023-12-12 Lg Innotek Co., Ltd. Lens driving device, and camera module and optical device including same
KR102686702B1 (ko) 2017-09-26 2024-07-22 엘지이노텍 주식회사 렌즈 구동 장치, 및 이를 포함하는 카메라 모듈 및 광학 기기
KR20190035114A (ko) * 2017-09-26 2019-04-03 엘지이노텍 주식회사 렌즈 구동 장치, 및 이를 포함하는 카메라 모듈 및 광학 기기
KR102498277B1 (ko) 2017-09-26 2023-02-09 엘지이노텍 주식회사 렌즈 구동 장치, 및 이를 포함하는 카메라 모듈 및 광학 기기
KR20230025813A (ko) * 2017-09-26 2023-02-23 엘지이노텍 주식회사 렌즈 구동 장치, 및 이를 포함하는 카메라 모듈 및 광학 기기
CN114080797A (zh) * 2019-07-17 2022-02-22 磁化电子株式会社 阻尼器和包括该阻尼器的相机用致动器
CN114080797B (zh) * 2019-07-17 2022-10-28 磁化电子株式会社 阻尼器和包括该阻尼器的相机用致动器
US11630322B2 (en) 2019-07-17 2023-04-18 Jahwa Electronics Co., Ltd. Damper and actuator for camera including same
CN115037868A (zh) * 2021-03-04 2022-09-09 宁波舜宇光电信息有限公司 光学防抖感光组件及其组装方法
CN115037868B (zh) * 2021-03-04 2023-08-11 宁波舜宇光电信息有限公司 光学防抖感光组件及其组装方法
CN115085506A (zh) * 2021-03-12 2022-09-20 日本电产株式会社 线性致动器
CN113194602A (zh) * 2021-05-10 2021-07-30 中山联合光电科技股份有限公司 一种柔性电路板、光学变焦镜头及电子设备
CN113452233A (zh) * 2021-07-21 2021-09-28 上海比路电子股份有限公司 一种大推力中置自动对焦马达

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