[go: up one dir, main page]

WO2021066272A1 - Actionneur de caméra et module de caméra le comprenant - Google Patents

Actionneur de caméra et module de caméra le comprenant Download PDF

Info

Publication number
WO2021066272A1
WO2021066272A1 PCT/KR2020/005556 KR2020005556W WO2021066272A1 WO 2021066272 A1 WO2021066272 A1 WO 2021066272A1 KR 2020005556 W KR2020005556 W KR 2020005556W WO 2021066272 A1 WO2021066272 A1 WO 2021066272A1
Authority
WO
WIPO (PCT)
Prior art keywords
sma wire
rotating plate
movable frame
camera actuator
rotation
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/KR2020/005556
Other languages
English (en)
Korean (ko)
Inventor
신두식
이덕열
김인수
김희승
변건형
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
Priority claimed from KR1020190121043A external-priority patent/KR102106525B1/ko
Priority claimed from KR1020200040394A external-priority patent/KR20210123091A/ko
Application filed by Jahwa Electronics Co Ltd filed Critical Jahwa Electronics Co Ltd
Publication of WO2021066272A1 publication Critical patent/WO2021066272A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • 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
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules

Definitions

  • the present invention relates to a camera actuator, and a camera actuator for vibration correction of a new driving method that generates a driving force for vibration correction by using the characteristics of a shape memory alloy that is restored to its original shape when the temperature changes, and includes the same. It relates to a camera module.
  • Portable terminals such as recent smartphones (hereinafter referred to as'mobile') are in line with the advancement of the technology, moving away from the traditional simple phone function, and with multi-convergence that can execute various functions such as music, movies, TV, and games.
  • One of the elements that is evolving and leading the development of multi-convergence is the camera module.
  • the camera module mounted on the mobile is changed to a structure with various additional functions such as an auto focus function and an optical zoom function in order to meet the recent trend focusing on high pixels and high functions according to the user's demand. I'm doing it.
  • attempts to implement an Optical Image Stabilizer technology on a mobile size have recently been conducted from various angles.
  • the shake correction technology is a technology that maintains the optimal resolution of a captured image by automatically controlling the focus of a lens assembly constituting a camera module to move in a direction against camera shake.
  • a camera module applied to a mobile or camcorder is equipped with an actuator for vibration correction.
  • VCM Voice Coil Motor
  • the VCM type usually composes a magnetic circuit with a coil and a permanent magnet arranged face-to-face, and the driving part mounted with a lens is horizontally moved on a plane perpendicular to the optical axis by electromagnetic force generated by the magnetic circuit to compensate for camera shake. Has a mechanism to implement it.
  • VCM Vehicle Coil Motor
  • the responsiveness or responsiveness to hand shake is poor. It takes time. Therefore, there is no problem in photographing a still image, but there is a disadvantage that it is not suitable for a camera module for video recording that requires a large number of images per minute.
  • the tension of the FPCB (Flexible PCB) attached to the camera module may be reduced in order to compensate for the insufficient force (driving force).
  • the length of the FPCB needs to be three times longer than the existing one, the manufacturing cost increases, and as the FPCB becomes longer, a larger mounting space is required, thereby failing to meet the trend of slimming to implement a thinner mobile thickness.
  • this rotation method also uses the electromagnetic force of the permanent magnet and the coil, the structure is complex and manufacturing is as difficult as the complex structure, so manufacturing cost is inevitably high.
  • this method of using electromagnetic force has a problem that the angle of tilting the driving part is small due to insufficient force as mentioned above, and therefore, it is not possible to respond properly when the hand shake is large.
  • the technical problem to be solved by the present invention is to provide a camera actuator for correcting vibration in a form suitable for a camera module having a large space limitation, such as a mobile, and a camera module including the same.
  • Another technical problem to be solved by the present invention is a camera actuator for vibration correction of a new driving method that generates a driving force for vibration correction using the characteristics of a shape memory alloy that is restored to its original shape when the temperature changes, and It is intended to provide a camera module including this.
  • Another technical problem to be solved by the present invention is a camera actuator for vibration correction capable of meeting the demands for miniaturization, weight reduction, and thinning of a camera module in the trend of slimming in order to implement a thinner mobile thickness and thus a simple structure, and a camera including the same.
  • a camera actuator for vibration correction capable of meeting the demands for miniaturization, weight reduction, and thinning of a camera module in the trend of slimming in order to implement a thinner mobile thickness and thus a simple structure, and a camera including the same.
  • Another technical problem to be solved by the present invention is a method of tilting an optical module equipped with an optical system using a thin and long fine wire composed of a shape memory alloy, which has a simple configuration and a large drive force. It is intended to provide a camera actuator capable of producing the same and a camera module including the same.
  • Another technical problem to be solved by the present invention is a camera actuator with a short SMA driving unit and a simple terminal configuration to solve a long restoration time or an actuator driving problem due to restoration when a shape memory alloy is applied, and a camera module including the same. Is to provide.
  • the rotating plate is coupled to the rotating shaft of the tilt unit accommodating the optical module, and a pair of long and thin SMA wires (Shape Memory Alloy Wire) having the property of contracting when current is applied are connected from one side and the other side of the rotating plate, It provides a camera actuator, characterized in that the tilt unit is operated as the side SMA wire to which the current is applied is contracted by a current alternatively applied to the pair of SMA wires.
  • SMA wires Shape Memory Alloy Wire
  • the first input piece and the second are spaced a certain distance from the center of the rotating plate and formed vertically symmetrically with respect to the center of the rotating plate or symmetrically formed horizontally with respect to a vertical axis passing through the center of the rotating plate.
  • the pair of SMA wires may be respectively connected to each of the input pieces.
  • the rotating plate coupled to the rotating shaft is a conductive member capable of energizing, and is formed integrally with the rotating plate and is symmetrical to one input piece spaced a certain distance from the center of the rotating plate. It can be connected so that it can be energized.
  • Camera actuator preferably,
  • a tilt unit in which an optical module mounted with an optical system is accommodated
  • a rotation driving unit that generates a driving force for rotating the tilt unit about a specific axis in the horizontal direction
  • the rotation drive unit The rotation drive unit,
  • a first SMA wire connected to the rotating plate at one side of the rotating plate so as to apply a one-way rotation moment to the rotating shaft through a rotating plate coupled to the rotating shaft of the tilt unit;
  • a current is alternatively applied to the first SMA wire and the second SMA wire, and the SMA wire to which the current is applied is contracted by the alternatively applied current, and a rotation moment may be applied to the rotation shaft.
  • the tilt unit includes a fixed frame having a circular or triangular or more polygonal ring shape, and a circular or triangular or more polygonal ring shape that is tiltably coupled to the inside of the fixed frame around a first direction axis perpendicular to the optical axis of the optical system.
  • a first direction axis perpendicular to the optical axis of the optical system a first direction axis perpendicular to the optical axis of the optical system.
  • the first movable frame and a circle or triangular or more polygonal ring shape coupled to the outside of the optical module and tiltably coupled to the inside of the first movable frame about a second direction axis orthogonal to the first direction. It may be a configuration including a second movable frame.
  • a first coupling groove is formed on one side portion of the fixed frame and the other side portion of the opposite portion, and a pair of first direction rotation shafts coupled to the first coupling grooves are formed in the first movable frame, and the first direction rotation shaft and A pair of second binding grooves may be formed in an orthogonal direction, and a pair of second direction rotation shafts coupled to the second binding grooves may be formed in the second movable frame.
  • the rotation driving unit for each of the first movable frame and the second movable frame so that the rotation of the first movable frame with respect to the fixed frame and the rotation of the second movable frame with respect to the first movable frame are independently implemented. It can be configured one by one.
  • a first input piece and a second input piece are formed at a position spaced apart from the center of the rotating plate by a predetermined distance, and the first SMA wire and the second SMA are respectively provided on the first and second input pieces.
  • a wire is connected, and a power terminal and a ground terminal may be connected to both ends of each of the first SMA wire and the second SMA wire.
  • the first and second input pieces may be symmetrically formed vertically with respect to the center of the rotating plate, or symmetrically formed with respect to a vertical axis passing through the center of the rotating plate.
  • the rotating plate is a conductive member capable of being energized and becomes a ground terminal, and one input piece is formed at a position spaced apart from the center of the rotating plate serving as the ground terminal by a predetermined distance, and the first One end of the SMA wire and the second SMA wire may be electrically connected to each other, and a power terminal may be connected to the other end of each of the first SMA wire and the second SMA wire.
  • It provides a camera module including; an optical module coupled to the inside of the tilt unit of the camera actuator and mounting an optical system and an image sensor.
  • the configuration is considerably simpler than that of the conventional VCM type.
  • the terminal configuration is very simple, and the method uses the physical characteristics of the shape memory alloy and the elastic properties of the spring, it is a long restoration that is a problem in the application of shape memory alloy (SMA).
  • SMA shape memory alloy
  • FIG. 1 is a conceptual diagram of a camera actuator for a rotation type VCM type shake correction according to the prior art.
  • FIG. 2 is a perspective view of a camera module including a camera actuator according to a first embodiment of the present invention.
  • FIG. 3 is an exploded perspective view showing the camera module shown in FIG. 2 in an exploded view.
  • FIG. 4 is a combined perspective view of a camera actuator in which the shield can and the optical module are omitted in FIG. 2.
  • FIG. 5 is a front view of the camera actuator shown in FIG. 4 in the direction of the arrow in FIG. 4;
  • FIG. 6 is a plan view of the camera actuator shown in FIG. 4 as viewed from above.
  • Figure 7 is an enlarged view of the main part of the present invention showing an enlarged portion of the rotating plate of Figure 6;
  • FIG. 8 is a view showing an operating state of a camera actuator according to the first embodiment of the present invention when correcting for a first direction shake.
  • FIG. 9 is an exploded perspective view of a camera module including a camera actuator according to a second embodiment of the present invention.
  • FIG. 10 is a perspective view of a camera actuator in which a shield can and an optical module are omitted from FIG. 9;
  • FIG. 11 is a front view of the camera actuator according to the second embodiment shown in FIG. 10 as viewed from a first direction.
  • FIG. 12 is a combined perspective view showing only the first movable frame and the second movable frame from FIG. 10;
  • FIG. 13 is a view of a partial configuration of the camera actuator shown in FIG. 12 as viewed from a second direction.
  • FIG. 14 is a view showing an operating state of a camera actuator according to a second exemplary embodiment of the present invention when correcting a first-direction image stabilization.
  • first and second may be used to describe various components, but the components should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another component.
  • ... unit ... unit
  • ... module a unit that processes at least one function or operation, which can be implemented by hardware or software or a combination of hardware and software. I can.
  • a portable user device refers to a portable user device.
  • mobile refers to a portable user device.
  • this is just a general term, and the present embodiment includes a mobile phone, a palm sized personal computer (PC), a personal communication system (PCS), a personal digital assistant (PDA), and a portable PC.
  • PC palm sized personal computer
  • PCS personal communication system
  • PDA personal digital assistant
  • HPC Hand-held PC
  • smart phone wireless LAN (Local Area Network) terminal
  • laptop computer netbook
  • tablet personal computer non-mobile game console
  • VR device Virtual Reality
  • vehicles etc.
  • the Z axis is a vertical direction in the drawings (Figs. 2 to 5), which means the direction of the optical axis in which light is input or a direction parallel to the optical axis
  • the X axis is a direction perpendicular to the Z axis. It will be described using the term'direction'.
  • the Y-axis is a direction orthogonal to the X-axis on the coplanar plane, and will be described below using the term “second direction”.
  • FIG. 2 is a perspective view illustrating a camera module including a camera actuator according to a first embodiment of the present invention
  • FIG. 3 is an exploded perspective view illustrating the camera module shown in FIG. 2.
  • the camera module 1 according to the present invention is largely composed of a camera actuator 2 and an optical module 5.
  • the camera actuator 2 includes a tilt unit 20 having a structure capable of tilting in a biaxial direction and a rotation driving unit 30 that rotates the same, and the optical module 5 is coupled to the inside of the tilt unit 20 to rotate.
  • the driving unit 30 is tilted in two directions (first direction and second direction) by a drive force generated.
  • the optical module 5 includes, for example, a carrier disposed to be movable in the optical axis direction in a housing (not shown), a magnetic circuit (not shown) that generates a force for moving it in the optical axis direction, and an optical system mounted on the carrier. It may be a configuration including (not shown) and an image sensor (not shown) coupled under the housing so as to be coaxially aligned with the rear of the optical system based on the traveling direction of light.
  • the optical system mounted on the carrier preferably includes a lens barrel (not shown).
  • the lens barrel is configured to pass light incident through the opening in the upper surface of the housing in the direction of the optical axis.
  • the lens barrel may accommodate a lens group composed of a plurality of lenses, and each of the lenses may have optical characteristics such as the same or different focal length and refractive index.
  • the light passing through the optical system is captured by an image sensor disposed behind the optical system based on the moving direction of the light.
  • the image sensor is mounted on a dedicated substrate to make an electrical connection and collects corresponding image information from light that has passed through the optical system. And the image information collected through the image sensor is output to the outside through the dedicated substrate.
  • the optical module 5 having this configuration is a preferred embodiment for describing the camera module 1 according to the embodiment of the present invention, and does not mean that it is limited to such a configuration. Since it can be replaced with a module composed of only a simple optical system and various types of previously known AF modules equipped with an AF (Auto Focus) function, a detailed description thereof will be omitted.
  • the optical module 5 is mounted on the camera actuator 2 and is driven in a direction that cancels shaking (hand shake) in a two-axis direction perpendicular to the optical axis (first Direction and second direction) Tilt movement is performed in a clockwise or counterclockwise direction within a predetermined angular range around a specific axis, and accordingly, vibration correction is implemented to optimally maintain the resolution of the captured image.
  • the camera actuator 2 uses a thin and long fine wire type SMA wire made of a shape memory alloy to drive the optical module 5 in a direction corresponding to hand shake. It is a concept actuator. That is, the camera actuator 2 has an operation mechanism using physical characteristics peculiar to the shape memory alloy to return to its original shape when the temperature changes.
  • the camera actuator 2 preferably includes a rotating plate 300 coupled to the rotating shafts 240 and 260 of the tilt unit 20.
  • a pair of long and thin SMA wires 310a and 310b that contract when a current is applied are connected at one side and the other side of the rotating plate 300.
  • a current may be alternatively applied to the pair of SMA wires 310a and 310b, and the tilt unit 20 may be operated by contraction of the SMA wire to which the current is applied.
  • First and second input pieces 302a and 302b to which a pair of SMA wires 310a and 310b are respectively connected are formed on the rotating plate 300 coupled to the rotating shafts 240 and 260.
  • the first and second input pieces 302a and 302b are formed symmetrically with respect to a vertical axis (axis in the optical axis direction) passing through the center of the rotating plate 300, or are spaced apart from the center of the rotating plate 300 by a predetermined distance.
  • On the basis of the center of the rotating plate 300 may be formed in a vertical symmetrical.
  • reference numeral 45 denotes a shield can.
  • the shield can 45 is a structure surrounding the outer surface of the tilt unit 20 to which the FPCB (not shown) is coupled, and to accommodate the tilt unit 20, the shape when viewed from a plane is a circle or a triangular or more polygonal ring. It may have a shape, and may be made of a magnetic material that blocks an external magnetic field from affecting the camera actuator 2.
  • FIG. 4 is a perspective view of a camera actuator in which the shield can and the optical module are omitted in FIG. 2, and FIG. 5 is a front view of the camera actuator shown in FIG. 4 in the direction of the arrow of FIG. 4. And FIG. 6 is a plan view of the camera actuator shown in FIG. 4 as viewed from above.
  • the camera actuator 2 includes a tilt unit 20 and a rotation driving unit 30.
  • the above-described optical module 5 including an optical system is mounted on the tilt unit 20, and the rotation driving unit 30 moves the tilt unit 20 on which the optical module 5 is mounted in a horizontal direction. It is provided by generating a driving force for rotation about the axis line and the second direction axis line).
  • the tilt unit 20 is arranged in a form superimposed on the inside of the square ring-shaped fixed frame 22 and the fixed frame 22 as illustrated in the drawings (Figs. 3 and 4), and has a relative motion with respect to the neighboring frames. It may include two movable frames (24, 26). Hereinafter, for convenience of description, descriptions will be made by dividing them into “first movable frame 24” and “second movable frame 26” in the order closest to the fixed frame 22.
  • the fixing frame 22 may be, for example, a rectangular ring shape viewed from a planar direction, but is not limited thereto.
  • the plan view may be a circle or a triangular or more polygonal ring shape, and the first and second movable frames 24 and 26 arranged sequentially on the inner side thereof have a planar shape of the fixed frame 22 and It can be of the same ring shape.
  • the first movable frame 24 is arranged concentrically in a structure superimposed on the inside of the fixed frame 22.
  • the first movable frame 24 moves relative to the fixed frame 22 within a predetermined angular range around the first direction axis a1 perpendicular to the optical axis (Z axis in the drawing) of the optical module 5 described above. , More specifically, it is coupled to the fixing frame 22 so as to perform a rotational motion.
  • the relative motion of the first movable frame 24 with respect to the fixed frame 22 is a pair of first movable frames formed at the center of one side of the fixed frame 22 and the other side of the opposite side. 1 binding groove 220 and a pair of first directions provided in the first movable frame 24 corresponding to each of the first binding grooves 220 so as to be rotatable in a state coupled to the first binding groove 220 It may be implemented by the rotation shaft 240.
  • a second movable frame 26 is concentrically disposed inside the first movable frame 24.
  • the optical module 5 is coupled to the inside of the second movable frame 26, and the second movable frame 26 to which the optical module 5 is coupled has a second direction axis a2 orthogonal to the first direction. It is coupled to the first movable frame 24 so as to perform a relative motion, more specifically, a rotational motion with respect to the first movable frame 24 within the angular range defined as the center.
  • the relative motion of the second movable frame 26 with respect to the first movable frame 24 is formed in the center of the upper end of one side portion and the other side portion of the first movable frame 24 oppositely disposed with respect to the second direction.
  • the first movable frame 24 is concentrically disposed inside the fixed frame 22 so as to be rotatable about the first direction axis a1.
  • a configuration in which the second movable frame 26 is disposed concentrically around the second direction axis a2 inside the first movable frame 24 is illustrated and described as an example, but is not limited thereto.
  • only one movable frame is installed inside the fixed frame 22 so that the movable frame rotates (tilt) in only one direction.
  • two or more movable frames may be configured so as to cope with multi-directional hand shake.
  • reference numeral 25 denotes a first direction rotation guide that supports a pair of first direction rotation shafts 240 so that they can stably rotate on the corresponding first coupling groove 220.
  • the direction rotation guide 25 may be coupled to the first movable frame 24 around the first fastening groove 220 by welding or a hook fastening method.
  • reference numeral 27 is a second direction rotation guide that supports a pair of second direction rotation shafts 260 so that they can stably rotate on the corresponding second coupling groove 242, and the second direction rotation guide ( 27) It may also be coupled to the second movable frame 26 around the second fastening groove 242 by welding or a hook fastening method.
  • the rotation driving unit 30 serves to generate a driving force for tilting the tilt unit 20 in the two-axis directions (first and second directions) to provide the tilt unit 20 to the tilt unit 20.
  • the rotation driving unit 30 includes a pair of SMA wires 310a and 310b provided to apply a rotational moment in a clockwise direction and a counterclockwise direction to the rotation shafts 240 and 260 of the tilt unit 20.
  • the rotation driving unit 30 includes a first SMA wire 310a of a thin and long fine wire type composed of a shape memory alloy having unique physical properties that are restored to an original shape when the temperature changes. And a second SMA wire 310b.
  • the first SMA wire 310a is one side of the rotating plate 300 to apply a one-way rotation moment to the rotating shafts 240 and 260 through the rotating plate 300 coupled to the rotating shafts 240 and 260 of the tilt unit 20.
  • the second SMA wire 310b is connected to the other side of the rotating plate 300 to apply a rotation moment in the opposite direction to the first SMA wire 310a to the rotating shafts 240 and 260 through the rotating plate 300. Is connected in.
  • Each of the first SMA wire 310a and the second SMA wire 310b is approximately the center of each of the SMA wires, while one end and the other end are located at different heights on one side and the other side of the tilt unit 20 as illustrated in FIG. 5.
  • Power terminals 320a and 320b and ground terminals 330a are provided at one end and the other end of each of the first SMA wire 310a and the second SMA wire 310b located at different heights on one side and the other side of the tilt unit 20. , 330b) is electrically connected. At this time, the power terminal 320a or 320b and the ground terminal 330a or 330b located in the same direction are electrically insulated from each other.
  • the power terminal 320a or 320b and the ground terminal 330a or 330b are electrically connected to each of a predetermined contact point of one FPCB so that current can be applied to the power terminals 320a and 320b through the FPCB.
  • the current applied to the first or second SMA wire 310a or 310b through the power terminals 320a and 320b is used as an energy source to deform (contract) the corresponding SMA wire.
  • a first input piece 302a and a second input piece 302b are formed at a position spaced apart from the center of the rotating plate 300 by a predetermined distance, and each of the first input piece 302a and the second input piece 302b
  • the first SMA wire 310a and the second SMA wire 310b are respectively connected. More specifically, each of the first and second input pieces 302a and 302b may be connected in a form in which the directions of the first and second SMA wires 310a and 310b are changed as a return point.
  • FIG. 7 is an enlarged view of the main part showing an enlarged view of the rotating plate portion of FIG. 6 in which a pair of input pieces is formed corresponding to a pair of SMA wires.
  • the first input piece 302a and the second input piece 302b are the rotating plate 300 It is formed symmetrically on the upper end (the lower end is also possible) of the rotating plate 300 based on the vertical axis passing through the center of (Fig. 7 (a)), or based on the center of the rotating plate 300 It can be formed in a vertical symmetrical (Fig. 7 (b)).
  • the shape memory alloy constituting the first and second SMA wires 310a and 310b may be a nickel-titanium (Ni-Ti) or a copper-titanium (Cu-Ti) alloy. These shape memory alloys have good tensile properties of about 3% elongation among various physical properties. In other words, it can be increased up to 3% compared to the initial length during tensioning. For example, if the initial length is 3mm, it can be stretched up to 3.09mm when tensioned.
  • the first and second input pieces 302a and 302b and the corresponding power supply are in a state in which the first and second SMA wires 310a and 310b are stretched by 1.5% of the initial length.
  • the opposite SMA wire can increase to 3%, the maximum elongation compared to the initial length. .
  • the SMA wire 310 is composed of a thin and long shape memory alloy. Shape memory alloys have a physical property of returning to their original state (or length) when the temperature changes. Therefore, when a current is applied to any one SMA wire 310a or 310b, the corresponding SMA wire 310a or 310b contracts with heat generated by resistance, and accordingly, the operating point of the rotating plate 300 (input piece 302a or 302b) A rotational moment acts on.
  • the rotating shaft 240 or 260 of the tilt unit 20 to which the rotating plate 300 and the rotating plate 300 are coupled rotates by a predetermined angle in the direction in which the corresponding SMA wire 310a or 310b is contracted, and eventually the tilt unit ( The optical module mounted on 20) rotates at a predetermined angle in a direction that cancels the vibration due to the contraction of the SMA wire 310a or 310b, thereby correcting the vibration.
  • the angle at which the rotating plate 300 and the rotating shaft 240 or 260 rotate in one direction is an action point, that is, an input piece, from the length and strain of the pair of SMA wires 310a and 310b and the rotation center of the rotating shaft 240 or 260. It is determined by the distance to (302a, 302b). Therefore, the rotation angle of the rotation shaft 240 or 260 can be determined by appropriately designing the above elements according to the specifications of the camera module.
  • one rotation driving unit 30 may be configured for each of the two-axis directions. That is, the first movable frame 24 so that the rotation of the first movable frame 24 with respect to the fixed frame 22 and the rotation of the second movable frame 26 with respect to the first movable frame 24 are independently implemented. And one for each of the second movable frame 26 may be configured.
  • the rotation driving unit 30 may be provided in a number corresponding to the movable frame.
  • the vibration correction performed by the camera module according to the first embodiment of the present invention will be described in connection with the operation of the camera actuator.
  • the configurations of the tilt unit 20 described above a case in which the second movable frame 26 is rotated with respect to the first movable frame 24 to respond to the first directional vibration will be described as an example.
  • Figure 8 is a view showing the operating state of the present invention for canceling the first direction vibration
  • Figure 8 (a) is an operating state when a current is applied to the first SMA wire is contracted and the second SMA wire is elongated
  • 8B is a view showing an operating state when a current is applied to the second SMA wire and contracted and the first SMA wire is elongated.
  • the second movable frame 26 is controlled through the FPCB through the control of the driving element.
  • Current is applied to the SMA wire 310b. More specifically, current is applied only to the second SMA wire 310b through the power terminal 320b electrically connected to the FPCB.
  • the second SMA wire 310b when the second SMA wire 310b is contracted by the applied current, the opposite first SMA wire 310a is elongated, and the contraction of the second SMA wire 310b is performed through the second input piece 302b. 300) generates a moment to rotate it in one direction (force to rotate clockwise in the drawing (F2)). As a result, the second movable frame 26 and the optical module 5 inside the second movable frame 26 rotate clockwise (Tilt) to cancel the vibration.
  • the camera actuator 2 is the tilt unit 20 by contraction of the first SMA wire 310a or contraction of the second SMA wire 310b by an alternatively applied current.
  • the optical module 5 mounted on is rotated in a clockwise or counterclockwise direction, and accordingly, the vibration is canceled, so that the resolution of the captured image can be optimally maintained even with the vibration.
  • a sensor At or around the rotating shaft 260 senses the amount of rotation of the second movable frame 26, and the driving element is based on the output of the sensor.
  • the position value of the second movable frame 26 is recognized in real time, and the vibration correction may be more accurately implemented by controlling the rotation driving unit 30 with feedback based on the recognized position value compared to the initial position.
  • the second direction vibration correction implemented through another rotation driving unit (a rotation driving unit that tilts the first movable frame with respect to the fixed frame) is also the aforementioned rotation driving unit 30, the first movable frame. It is implemented in the same principle as the vibration correction by (a rotation driving unit that tilts the second movable frame). Therefore, a redundant description of this will be omitted.
  • FIG. 9 is an exploded perspective view of a camera module including a camera actuator according to a second embodiment of the present invention.
  • the same configuration as the first embodiment described above is used. It will be described by denoting the same reference numerals for the drawings.
  • the camera module 1 is largely composed of a camera actuator 2 and an optical module 5.
  • the camera actuator 2 includes a tilt unit 20 having a structure capable of tilting in a biaxial direction and a rotation driving unit 30 that rotates the same, and the optical module 5 is coupled to the inside of the tilt unit 20 to rotate.
  • the driving unit 30 is tilted in two directions (first direction and second direction) by a drive force generated.
  • the optical module 5 includes, for example, a carrier disposed to be movable in the optical axis direction in a housing (not shown), a magnetic circuit (not shown) that generates a force for moving it in the optical axis direction, and an optical system mounted on the carrier. It may be a configuration including (not shown) and an image sensor (not shown) coupled under the housing so as to be coaxially aligned with the rear of the optical system based on the traveling direction of light.
  • the optical system mounted on the carrier preferably includes a lens barrel (not shown).
  • the lens barrel is configured to pass light incident through the opening in the upper surface of the housing in the direction of the optical axis.
  • the lens barrel may accommodate a lens group composed of a plurality of lenses, and each of the lenses may have optical characteristics such as the same or different focal length and refractive index.
  • the light passing through the optical system is captured by an image sensor disposed behind the optical system based on the moving direction of the light.
  • the image sensor is mounted on a dedicated substrate to make an electrical connection and collects corresponding image information from light that has passed through the optical system. And the image information collected through the image sensor is output to the outside through the dedicated substrate.
  • the optical module 5 having this configuration is a preferred embodiment for describing the camera module 1 according to the embodiment of the present invention, and does not mean that it is limited to such a configuration. Since it can be replaced with a module composed of only a simple optical system and various types of previously known AF modules equipped with an AF (Auto Focus) function, a detailed description thereof will be omitted.
  • the optical module 5 is mounted on the camera actuator 2 and is driven in a direction that cancels shaking (hand shake) in a two-axis direction perpendicular to the optical axis (first Direction and second direction) Tilt movement is performed in a clockwise or counterclockwise direction within a predetermined angular range around a specific axis, and accordingly, vibration correction is implemented to optimally maintain the resolution of the captured image.
  • the camera actuator 2 uses a thin and long fine wire type SMA wire made of a shape memory alloy to drive the optical module 5 in a direction corresponding to hand shake. It is a concept actuator. That is, the camera actuator 2 has an operation mechanism using physical characteristics peculiar to the shape memory alloy to return to its original shape when the temperature changes.
  • the camera actuator 2 preferably includes a rotating plate 300 coupled to the rotating shafts 240 and 260 of the tilt unit 20.
  • a pair of long and thin SMA wires 310a and 310b that contract when a current is applied are connected at one side and the other side of the rotating plate 300.
  • Current is alternatively applied to the pair of SMA wires 310a and 310b, and the tilt unit 20 may be operated by contraction of the SMA wire on the side to which the current is applied.
  • the rotating plate 300 coupled to the rotating shafts 240 and 260 is a conductive member capable of energizing and serves as a ground terminal.
  • one input piece 302 is formed at a point spaced a certain distance from its center (a point coincident with the center of the rotating shafts 240, 260), and in one input piece 302 formed as such.
  • a pair of SMA wires 302a and 302b are electrically connected to each other in a symmetrical form.
  • the rotating plate 300 serving as a ground terminal as a conductive member is coupled to the rotating shafts 240 and 260 of the tilt unit 20, and the horizontal axis lines a1 and a2 passing through the center of the rotating shafts 240 and 260 are A pair of SMA wires 302a and 302b can be electrically energized in a symmetrical left-right with respect to one input piece 302 integrally provided with the rotating plate 300 at a position spaced a certain distance from the point where the rotating plate 300 meets. Connected to each other.
  • reference numeral 45 denotes a shield can.
  • the shield can 45 has a structure surrounding the outer surface of the tilt unit 20 to which the FPCB is coupled, and to accommodate the tilt unit 20, the shape when viewed from a plane may be a circle or a polygonal ring shape of a triangle or more. , It may be composed of a magnetic material that blocks the external magnetic field from affecting the camera actuator (2).
  • FIG. 10 is a combined perspective view of a camera actuator in which the shield can and the optical module are omitted in FIG. 9, and FIG. 11 is a camera actuator according to the second embodiment shown in FIG. 10 in a first direction (direction of an arrow in FIG. 10). This is a front view.
  • FIG. 12 is a combined perspective view showing only the first movable frame and the second movable frame from FIG. 10, and FIG. 13 is a partial configuration of the camera actuator shown in FIG. 12 as viewed from a second direction (arrow direction of FIG. 12). It is a drawing.
  • the camera actuator 2 includes a tilt unit 20 and a rotation driving unit 30.
  • the above-described optical module 5 including an optical system is mounted on the tilt unit 20, and the rotation driving unit 30 moves the tilt unit 20 on which the optical module 5 is mounted in a horizontal direction. It is provided by generating a driving force for rotation about the axis line and the second direction axis line).
  • the tilt unit 20 is arranged in a form superimposed on the inside of the rectangular ring-shaped fixed frame 22 and the fixed frame 22 as illustrated in the drawings (Figs. 9 and 10), and has a relative motion with respect to the neighboring frames. It may include two movable frames (24, 26). Hereinafter, for convenience of description, descriptions will be made by dividing them into “first movable frame 24” and “second movable frame 26” in the order closest to the fixed frame 22.
  • the fixing frame 22 may be, for example, a rectangular ring shape viewed from a planar direction, but is not limited thereto.
  • the plan view may be a circle or a triangular or more polygonal ring shape, and the first and second movable frames 24 and 26 arranged sequentially on the inner side thereof have a planar shape of the fixed frame 22 and It can be of the same ring shape.
  • the first movable frame 24 is arranged concentrically in a structure superimposed on the inside of the fixed frame 22.
  • the first movable frame 24 moves relative to the fixed frame 22 within a predetermined angular range around the first direction axis a1 perpendicular to the optical axis (Z axis in the drawing) of the optical module 5 described above. , More specifically, it is coupled to the fixing frame 22 so as to perform a rotational motion.
  • the relative motion of the first movable frame 24 with respect to the fixed frame 22 is a pair of first movable frames formed at the center of one side of the fixed frame 22 and the other side of the opposite side. 1 binding groove 220 and a pair of first directions provided in the first movable frame 24 corresponding to each of the first binding grooves 220 so as to be rotatable in a state coupled to the first binding groove 220 It may be implemented by the rotation shaft 240.
  • a second movable frame 26 is concentrically disposed inside the first movable frame 24.
  • the optical module 5 is coupled to the inside of the second movable frame 26, and the second movable frame 26 to which the optical module 5 is coupled has a second direction axis a2 orthogonal to the first direction. It is coupled to the first movable frame 24 so as to perform a relative motion, more specifically, a rotational motion with respect to the first movable frame 24 within the angular range defined as the center.
  • the relative motion of the second movable frame 26 with respect to the first movable frame 24 is formed in the center of the upper end of one side portion and the other side portion of the first movable frame 24 oppositely disposed with respect to the second direction.
  • the first movable frame 24 is concentrically disposed inside the fixed frame 22 so as to be rotatable about the first direction axis a1.
  • a configuration in which the second movable frame 26 is disposed concentrically around the second direction axis a2 inside the first movable frame 24 is illustrated and described as an example, but is not limited thereto.
  • only one movable frame is installed inside the fixed frame 22 so that the movable frame rotates (tilt) in only one direction.
  • two or more movable frames may be configured so as to cope with multi-directional hand shake.
  • reference numeral 25 denotes another first-direction rotating shaft 240 located opposite the first-direction rotating shaft 240 to which the first driving unit 32 to be described later is connected among the pair of first-direction rotating shafts 240. It refers to a first direction guide pin that supports the first tilt groove 220 corresponding to this so as to stably rotate.
  • the first direction guide pin 25 may be coupled to the first movable frame 24 around the first tilt groove 220 by welding or a hook fastening method.
  • reference numeral 27 denotes another second direction rotation shaft 260 located opposite the second direction rotation shaft 260 to which the second driving unit 34 to be described later is connected among the pair of second direction rotation shafts 260.
  • the second direction guide pin 27 and the second movable frame 26 around the second tilt groove 242 Can be coupled by welding or a hook fastening method.
  • the rotation driving unit 30 serves to generate a driving force for tilting the tilt unit 20 in the two-axis directions (first and second directions) to provide the tilt unit 20 to the tilt unit 20.
  • the rotation driving unit 30 includes a pair of SMA wires 310a and 310b provided to apply a rotational moment in a clockwise direction and a counterclockwise direction to the rotation shafts 240 and 260 of the tilt unit 20.
  • the rotation driving unit 30 includes a first SMA wire 310a of a thin and long fine wire type composed of a shape memory alloy having unique physical properties that are restored to an original shape when the temperature changes. And a second SMA wire 310b.
  • the first SMA wire 310a is one side of the rotating plate 300 to apply a one-way rotation moment to the rotating shafts 240 and 260 through the rotating plate 300 coupled to the rotating shafts 240 and 260 of the tilt unit 20.
  • the second SMA wire 310b is connected to the other side of the rotating plate 300 to apply a rotation moment in the opposite direction to the first SMA wire 310a to the rotating shafts 240 and 260 through the rotating plate 300. Is connected in.
  • the first and second SMA wires 310a and 310b are electrically energized so that one end thereof is symmetrical to the input piece 302 of the rotating plate 300 described above, and the opposite side, that is, the first and second SMA wires.
  • the other ends of each of the wires 310a and 310b are electrically connected to the power terminals 320a and 320b mounted on the FPCB 40 so as to form a symmetrical arrangement around the rotating plate 300.
  • the power terminals 320a and 320b and the rotating plate 300 functioning as a ground terminal are electrically connected to each of the predetermined contact points of one FPCB 40 so as to be energized. Accordingly, current may be selectively applied to the power terminals 320a and 320b through the FPCB 40.
  • the current applied to the first or second SMA wire 310a or 310b through the power terminals 320a and 320b is used as an energy source to deform (contract) the corresponding SMA wire.
  • a coupling structure in which the rotation shafts 240 and 260 can be rotated with a rotation moment input to the rotation plate 300 through a hole (not shown) formed in a structure capable of coupling with the protrusion in) is preferable, but is limited thereto. It is not.
  • the first and second SMA wires 310a and 310b may be separated from each other so that one end of the first and second SMA wires 310a and 310b are respectively connected to one input pin 302, but are not limited thereto.
  • the power terminal 320a and the input piece 302 of one side, and the power terminal 320b of the other side may be connected to each other in a thin and long strand.
  • the first and second SMA wires 320a and 320b are symmetrical on the left and right with respect to the rotating plate 300, and are electrically connected to one input piece 302 formed on the rotating plate 300.
  • a configuration that is connected so as to be energized is illustrated as an example, but is not limited thereto. This is because even in the form in which the input piece 302 is omitted, a configuration having the same operating mechanism can be implemented.
  • the first and second SMA wires 320a and 320b need only be connected to the rotating plate 300 so as to be energized in a structure that is symmetrical with respect to the center line in the direction (third direction).
  • the shape memory alloy constituting the first and second SMA wires 310a and 310b may be a nickel-titanium (Ni-Ti) or a copper-titanium (Cu-Ti) alloy. These shape memory alloys have good tensile properties of about 3% elongation among various physical properties. In other words, it can be increased up to 3% compared to the initial length during tensioning. For example, if the initial length is 3mm, it can be stretched up to 3.09mm when tensioned.
  • the first and second input pieces 302a and 302b and the corresponding power supply are in a state in which the first and second SMA wires 310a and 310b are stretched by 1.5% of the initial length.
  • the opposite SMA wire can increase to 3%, the maximum elongation compared to the initial length. .
  • the SMA wire 310 is composed of a thin and long shape memory alloy. Shape memory alloys have a physical property of returning to their original state (or length) when the temperature changes. Therefore, when a current is applied to any one SMA wire 310a or 310b, the corresponding SMA wire 310a or 310b contracts with heat generated by resistance, and accordingly, the operating point of the rotating plate 300 (input piece 302a or 302b) A rotational moment acts on.
  • the rotating shaft 240 or 260 of the tilt unit 20 to which the rotating plate 300 and the rotating plate 300 are coupled rotates by a predetermined angle in the direction in which the corresponding SMA wire 310a or 310b is contracted, and eventually the tilt unit ( The optical module mounted on 20) rotates at a predetermined angle in a direction that cancels the vibration due to the contraction of the SMA wire 310a or 310b, thereby correcting the vibration.
  • the angle at which the rotating plate 300 and the rotating shaft 240 or 260 rotate in one direction is an action point, that is, an input piece, from the length and strain of the pair of SMA wires 310a and 310b and the rotation center of the rotating shaft 240 or 260. It is determined by the distance to (302a, 302b). Therefore, the rotation angle of the rotation shaft 240 or 260 can be determined by appropriately designing the above elements according to the specifications of the camera module.
  • one for each of the two-axis directions may be configured. That is, the first movable frame 24 so that the rotation of the first movable frame 24 with respect to the fixed frame 22 and the rotation of the second movable frame 26 with respect to the first movable frame 24 are independently implemented. And one for each of the second movable frame 26 may be configured.
  • the rotation driving unit 30 may be provided in a number corresponding to the movable frame.
  • FIG. 14 is a partial excerpt showing an operating state according to an embodiment of the present invention when correcting the first-direction image stabilization.
  • FIG. 14(a) is a current applied to the first SMA wire and contracted, and the second SMA wire is extended. In this case, it is a view showing an operating state
  • FIG. 14B is a view showing an operating state when a current is applied to the second SMA wire and contracted and the first SMA wire is extended.
  • the vibration in the first direction When the vibration in the first direction is sensed, current is supplied to the rotation driving unit 30 through the FPCB under the control of a driving element (not shown) so that the second movable frame 26 can be operated in a direction that cancels it. For example, if it is necessary to rotate the second movable frame 26 counterclockwise in order to cancel the vibration in the first direction as shown in FIG. 14A, the first movable frame 26 is controlled by the FPCB through the control of the driving element. Current is applied to the SMA wire 310a.
  • the opposite second SMA wire 310b is extended, and the contraction of the first SMA wire 310a is caused by the input piece 302 and the rotating plate 300 It generates a moment to rotate it in one direction (a force to rotate it counterclockwise in the drawing (F1)).
  • the second movable frame 26 and the optical module 5 inside the second movable frame 26 are rotated counterclockwise (Tilt) to cancel the vibration.
  • the second movable frame 26 is controlled through the FPCB through the control of the driving element.
  • Current is applied to the SMA wire 310b. More specifically, current is applied only to the second SMA wire 310b through the power terminal 320b electrically connected to the FPCB.
  • the second SMA wire 310b when the second SMA wire 310b is contracted by the applied current, the opposite first SMA wire 310a is elongated, and the contraction of the second SMA wire 310b is performed through the second input piece 302b. 300) generates a moment to rotate it in one direction (force to rotate clockwise in the drawing (F2)). As a result, the second movable frame 26 and the optical module 5 inside the second movable frame 26 rotate clockwise (Tilt) to cancel the vibration.
  • the camera actuator 2 is the tilt unit 20 by contraction of the first SMA wire 310a or contraction of the second SMA wire 310b by an alternatively applied current.
  • the optical module 5 mounted on is rotated in a clockwise or counterclockwise direction, and accordingly, the vibration is canceled, so that the resolution of the captured image can be optimally maintained even with the vibration.
  • a sensor At or around the rotating shaft 260 senses the amount of rotation of the second movable frame 26, and the driving element is based on the output of the sensor.
  • the position value of the second movable frame 26 is recognized in real time.
  • vibration correction may be more accurately implemented.
  • the second direction vibration correction implemented through another rotation driving unit (a rotation driving unit that tilts the first movable frame with respect to the fixed frame) is also the aforementioned rotation driving unit 30, the first movable frame. It is implemented in the same principle as the vibration correction by (a rotation driving unit that tilts the second movable frame). Therefore, a redundant description of this will be omitted.
  • a conventional VCM-type camera actuator that compensates for camera shake by driving a driving part mounted with an optical system in a horizontal direction or rotating around an axis in a horizontal direction with a force (electromagnetic force) generated by the interaction between a coil and a permanent magnet,
  • the configuration is quite complex, the overall volume is as large as the complex configuration, so it is difficult to implement a product in a compact size, and it has the disadvantages of lack of drive force.
  • the present invention is a structure that responds to hand shake by using the physical characteristics of a shape memory alloy of a fine wire type (a characteristic that tries to return to its original length when the temperature changes).
  • a shape memory alloy of a fine wire type a characteristic that tries to return to its original length when the temperature changes.
  • It can be used as an actuator to implement vibration correction in a camera module mounted on a mobile or the like.
  • optical module 20 tilt unit
  • first direction guide pin 26 second movable frame
  • first coupling groove 240 first direction rotation shaft

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Studio Devices (AREA)
  • Adjustment Of Camera Lenses (AREA)

Abstract

L'invention concerne : un actionneur de caméra pour la correction du tremblement au moyen d'un nouveau procédé d'entraînement utilisant un alliage à mémoire de forme ayant la propriété physique d'être restauré à sa forme originale lorsque la température change ; et un module de caméra le comprenant. Un actionneur de caméra selon la présente invention comprend : une unité d'inclinaison servant à recevoir un module optique sur lequel est monté un système optique ; et une partie d'entraînement en rotation qui génère et fournit une force d'entraînement servant à faire tourner l'unité d'inclinaison autour d'un axe horizontal spécifique. L'unité d'entraînement en rotation comprend : un premier fil SMA qui est connecté sur un côté d'une plaque rotative de façon à appliquer un moment de rotation unidirectionnel à un arbre rotatif de l'unité d'inclinaison à travers la plaque rotative couplée à l'arbre rotatif ; et un second fil SMA qui est connecté sur l'autre côté de la plaque rotative de façon à appliquer un moment de rotation à l'arbre rotatif à travers la plaque rotative dans la direction opposée à celle du premier fil SMA. Un courant électrique est alternativement appliqué au premier fil SMA et au second fil SMA, et le fil SMA auquel le courant électrique a été alternativement appliqué se contracte en raison du courant électrique qui lui est appliqué, ce qui amène l'arbre rotatif à tourner de telle sorte que l'unité d'inclinaison équipée d'un module optique peut s'incliner dans le sens des aiguilles d'une montre ou dans le sens inverse des aiguilles d'une montre pour contrebalancer le tremblement des mains.
PCT/KR2020/005556 2019-09-30 2020-04-28 Actionneur de caméra et module de caméra le comprenant Ceased WO2021066272A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR1020190121043A KR102106525B1 (ko) 2019-09-30 2019-09-30 카메라 액추에이터 및 이를 포함하는 카메라 모듈
KR10-2019-0121043 2019-09-30
KR1020200040394A KR20210123091A (ko) 2020-04-02 2020-04-02 카메라 액추에이터 및 이를 포함하는 카메라 모듈
KR10-2020-0040394 2020-04-02

Publications (1)

Publication Number Publication Date
WO2021066272A1 true WO2021066272A1 (fr) 2021-04-08

Family

ID=75338158

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2020/005556 Ceased WO2021066272A1 (fr) 2019-09-30 2020-04-28 Actionneur de caméra et module de caméra le comprenant

Country Status (1)

Country Link
WO (1) WO2021066272A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230004065A1 (en) * 2021-07-02 2023-01-05 Alps Alpine Co., Ltd. Optical module drive device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007041455A (ja) * 2005-08-05 2007-02-15 Matsushita Electric Ind Co Ltd 光学装置の像振れ補正装置
JP2013242426A (ja) * 2012-05-21 2013-12-05 Konica Minolta Inc 駆動機構およびレンズ移動機構
KR20140117033A (ko) * 2013-03-26 2014-10-07 엘지이노텍 주식회사 카메라 모듈의 손떨림 보정장치
KR101893229B1 (ko) * 2010-08-09 2018-08-29 캠브리지 메카트로닉스 리미티드 카메라 장치
KR101938273B1 (ko) * 2016-07-01 2019-01-15 자화전자(주) 광학기기용 회동 구동장치 및 이를 구비하는 카메라 모듈

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007041455A (ja) * 2005-08-05 2007-02-15 Matsushita Electric Ind Co Ltd 光学装置の像振れ補正装置
KR101893229B1 (ko) * 2010-08-09 2018-08-29 캠브리지 메카트로닉스 리미티드 카메라 장치
JP2013242426A (ja) * 2012-05-21 2013-12-05 Konica Minolta Inc 駆動機構およびレンズ移動機構
KR20140117033A (ko) * 2013-03-26 2014-10-07 엘지이노텍 주식회사 카메라 모듈의 손떨림 보정장치
KR101938273B1 (ko) * 2016-07-01 2019-01-15 자화전자(주) 광학기기용 회동 구동장치 및 이를 구비하는 카메라 모듈

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230004065A1 (en) * 2021-07-02 2023-01-05 Alps Alpine Co., Ltd. Optical module drive device
CN115576147A (zh) * 2021-07-02 2023-01-06 阿尔卑斯阿尔派株式会社 光学模块驱动装置
US12416843B2 (en) * 2021-07-02 2025-09-16 Alps Alpine Co., Ltd. Optical module drive device

Similar Documents

Publication Publication Date Title
WO2020050650A1 (fr) Module appareil de prise de vue
WO2020004975A1 (fr) Dispositif de caméra et instrument optique
WO2020027588A1 (fr) Dispositif d'entraînement de lentille et module de prise de vues incluant ce dispositif d'entraînement
WO2020242202A1 (fr) Module de caméra
WO2017010745A1 (fr) Dispositif d'entraînement de lentille, module d'appareil de prise de vue, et dispositif optique
WO2019221541A1 (fr) Module appareil photographique
WO2017188771A1 (fr) Mécanisme d'entraînement de lentille, module d'appareil de prise de vues, et dispositif optique
WO2021246708A1 (fr) Actionneur pour module de caméra dioptrique et module de caméra le comprenant
WO2021158031A1 (fr) Dispositif de caméra
WO2020122594A1 (fr) Ensemble lentilles et module de caméra le comprenant
WO2019147004A1 (fr) Module de caméra
WO2018182239A1 (fr) Appareil d'entraînement de lentille, et module d'appareil photo et dispositif optique comprenant ledit appareil d'entraînement
WO2022245055A1 (fr) Dispositif actionneur
WO2022124834A1 (fr) Dispositif de commande de capteur
WO2014171799A1 (fr) Dispositif mems
WO2021242079A1 (fr) Actionneur de caméra et dispositif de caméra le comprenant
WO2019199130A1 (fr) Dispositif d'entraînement de lentille et module de prise de vues incluant ce dispositif d'entraînement
WO2021230719A1 (fr) Module de caméra
WO2022145954A1 (fr) Module de caméra
WO2022245056A1 (fr) Appareil de caméra
WO2021020868A1 (fr) Dispositif d'entraînement, module de caméra et dispositif terminal portable
WO2022059949A1 (fr) Dispositif de caméra et instrument optique
WO2021066272A1 (fr) Actionneur de caméra et module de caméra le comprenant
WO2022245054A1 (fr) Dispositif de caméra
WO2021215796A1 (fr) Module de caméra

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20872508

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20872508

Country of ref document: EP

Kind code of ref document: A1