WO2023204428A1 - Actionneur de commande de zoom - Google Patents

Actionneur de commande de zoom Download PDF

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Publication number
WO2023204428A1
WO2023204428A1 PCT/KR2023/002741 KR2023002741W WO2023204428A1 WO 2023204428 A1 WO2023204428 A1 WO 2023204428A1 KR 2023002741 W KR2023002741 W KR 2023002741W WO 2023204428 A1 WO2023204428 A1 WO 2023204428A1
Authority
WO
WIPO (PCT)
Prior art keywords
carrier
optical axis
support member
guiding space
actuator
Prior art date
Application number
PCT/KR2023/002741
Other languages
English (en)
Korean (ko)
Inventor
박철순
연제승
Original Assignee
자화전자 주식회사
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 자화전자 주식회사 filed Critical 자화전자 주식회사
Publication of WO2023204428A1 publication Critical patent/WO2023204428A1/fr

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    • 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
    • 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
    • G02B27/646—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image compensating for small deviations, e.g. due to vibration or shake
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G02B7/09—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
    • G—PHYSICS
    • 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
    • G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens

Definitions

  • the present invention relates to an actuator for zoom driving, and more specifically, to a zoom driving actuator that can further improve space utilization according to the extended moving distance of the lens.
  • AF autofocus
  • camera modules mounted on mobile terminals such as mobile phones and smartphones, as well as independent camera devices, prevent camera shake.
  • Functions such as OIS (Optical Image Stabilization) are being implemented.
  • an actuator for driving a zoom that can vary the size of the subject through zoom-in and zoom-out functions has been disclosed, and depending on the embodiment, a plurality of lenses (lens assembly) have been disclosed.
  • An actuator that implements more diverse AF or/and zoom functions by applying the mutual positional relationship in combination has also been disclosed.
  • the moving distance (also referred to as stroke) of the zoom lens moving in the direction of the optical axis is longer or longer than that of a general lens, and multiple carriers may be applied depending on the embodiment, so when compared to a general actuator This is accompanied by a relative increase in volume such as length and width.
  • the present invention was created to solve the above-described problems against the above background, and its purpose is to provide an actuator for zoom driving that not only maintains the drive of the carrier more stably but also realizes more effective spatial utilization of the actuator. there is.
  • the actuator for zoom driving of the present invention for achieving the above object includes a first support member, a first body portion into which the first support member is inserted and molded so that the first part, which is a part of the first support member, is exposed, and an optical axis.
  • a first carrier that includes a first guiding space formed on the opposite side of the first part and moves in the optical axis direction with respect to the housing; and a second support member, a second body portion formed by inserting the second support member so that the second part, which is a part of the second support member, is exposed, and a second body portion formed on the opposite side of the second part based on the optical axis.
  • It includes a second carrier including two guiding spaces, and in this case, the first part is guided by the second guiding space, and the second part is configured to be guided by the first guiding space. do.
  • the first carrier of the present invention may include a plurality of first mounters on which a plurality of lenses are each mounted and are spaced apart from each other based on the optical axis direction
  • the second carrier of the present invention may include m pieces on which lenses are mounted. (m is a natural number of 1 or more) It may include a second mounter, and at least one of the second mounters may be configured to be located between the plurality of first mounters.
  • the first carrier of the present invention is formed on a side opposite to the first part with respect to the optical axis and may include a first mounting portion on which a first magnet facing the first coil provided in the housing is mounted.
  • the first guiding space may be formed between the first mounter and the first mounting part.
  • the second carrier of the present invention is formed on a side opposite to the second part with respect to the optical axis, and may include a second mounting portion on which a second magnet facing the second coil provided in the housing is mounted.
  • the second guiding space may be formed between the second mounter and the second mounting unit.
  • first and second guiding spaces of the present invention may be configured so that the directions of the open portions are opposite to each other with respect to the upper and lower portions.
  • the present invention may further include a ball disposed between one or more of the first carrier and the housing or the second carrier and the housing.
  • first and second carriers of the present invention overlap with some of the movement sections through mutual guiding between the first part and the second guiding space and between the second part and the first guiding space. It can be configured as follows.
  • a structure is formed on each of a plurality of carriers so that a portion of the inserted support member is exposed to the outside, and the exposed structure formed on one carrier is formed on another carrier.
  • the guiding space of each carrier is formed between the mounter on which the lens is mounted and the mounting portion on which the magnet is mounted.
  • FIG. 1 is a diagram showing the overall configuration of a zoom actuator and a camera module according to a preferred embodiment of the present invention
  • Figure 2 is a diagram showing the overall configuration of an actuator for zoom driving according to a preferred embodiment of the present invention
  • Figure 3 is a diagram showing a carrier and its related configuration according to an embodiment of the present invention.
  • FIG. 4 is a diagram showing the detailed configuration of a first carrier, etc. according to an embodiment of the present invention.
  • FIG. 5 is a diagram showing the detailed configuration of a second carrier, etc. according to an embodiment of the present invention.
  • Figure 6 is a diagram showing the first and second carriers combined
  • Figures 7 and 8 are diagrams showing the relationship in which a first carrier and a second carrier are combined.
  • Figure 1 is a diagram showing the overall configuration of a zoom driving actuator (hereinafter referred to as 'actuator') 100 and a camera module 1000 according to a preferred embodiment of the present invention.
  • the actuator 100 of the present invention can be implemented as a single device itself, and can also be implemented as a camera module 1000 that includes a reflectometer module 200, etc., as shown in FIG. 1.
  • the actuator 100 of the present invention performs functions such as auto focus (AF) or continuous zoom (Zoom) by linearly moving one or more carriers on which lenses (lens assemblies) are mounted in the optical axis direction. Corresponds to the actuator being implemented.
  • AF auto focus
  • Zoom continuous zoom
  • the reflectometer module 200 which may be provided in front or above the actuator 100 (optical axis direction, based on the Z-axis direction in the drawing), converts the light path (Z1) of the subject into the path (Z) in the lens direction. It performs the function of reflection or refraction. In this way, the light reflected or refracted in the optical axis direction flows into the image sensor 30, such as CMOS or CCD, through a lens (lens assembly) provided on the carriers 120 and 130.
  • the image sensor 30 such as CMOS or CCD
  • the reflectometer module 200 that changes the path of light may include a reflectometer 210 that may be made of one selected from a mirror or a prism or a combination thereof.
  • This reflection system 210 can be implemented by various members that can change the direction of the optical axis of light coming from the outside world, but it is preferable to implement it with a glass material to improve optical performance.
  • the camera module 1000 of the present invention which includes the reflectometer module 200, etc., is configured to refract the light path and allow light to flow in the direction of the lens, so the device itself can be installed in the thickness direction of the portable terminal (smartphone, etc.) Since it can be installed in the longitudinal direction without increasing the thickness of the mobile terminal, it can be optimized for miniaturization or slimming of the mobile terminal.
  • the reflectometer 210 may be configured to rotate and move by a driving means that generates magnetic force, such as a magnet and a coil (C3, see FIG. 2), and a position sensor.
  • a driving means that generates magnetic force, such as a magnet and a coil (C3, see FIG. 2), and a position sensor.
  • the reflector 210 moves or rotates, the light of the subject reflected (refracted) through the reflector 210 moves in the ⁇ Y direction and/or ⁇ X direction, so that the Alternatively, Y-axis direction correction may be implemented.
  • the light of the subject reflected through the reflectometer module 200 is transmitted through one or more lenses (R2-1, R1-1, R2) mounted on one or more carriers (120, 130) that move linearly based on the optical axis direction (Z-axis). -2, R1-2, etc.), and functions such as zoom or AF are implemented by adjusting the position of one or more lenses (based on the optical axis direction) in combination by the actuator 100 of the present invention.
  • two carriers 120 and 130 are shown that move the housing 110 in the optical axis direction as a relative fixture.
  • this is an example, and of course, a different number of carriers may be provided, and optical specifications or Depending on performance, etc., a fixed lens may be provided in the housing 110, etc.
  • the direction axis corresponding to the path through which light flows into a lens, etc. is defined as the optical axis (Z-axis), and the two axes perpendicular to this optical axis (Z-axis) are defined as the X-axis and Y-axis.
  • FIG. 2 is a diagram showing the overall configuration of the actuator 100 according to a preferred embodiment of the present invention
  • FIG. 3 is a diagram showing the carriers 120 and 130 and configurations related thereto according to an embodiment of the present invention. am.
  • the actuator 100 of the present invention corresponds to the basic frame structure of the actuator 100 and includes a housing 110, a first carrier 120, and a second carrier 130 that accommodate the internal structure.
  • the first carrier 120 and/or the second carrier 130 corresponds to a moving body that moves linearly based on the optical axis direction (Z-axis direction), and the housing 110 corresponds to a fixed body from a corresponding relative perspective. .
  • both the first carrier 120 and the second carrier 130 may move in an independent manner in the optical axis direction, or only one of them may be configured to move in the optical axis direction.
  • the first carrier 120 is equipped with a first magnet (M1) for driving in the optical axis direction, and the first mounters (123, 124, FIG. 4) can be formed.
  • a first coil (C1) is disposed in the housing 110 to face the first magnet (M1) and provide driving force to the first magnet (M1).
  • the first coil C1 includes a plurality of coils arranged up and down along the optical axis direction as illustrated in the drawing ( It is desirable to implement it as C11, C12).
  • the first lenses (R1-1, R1-2) mounted on the first carrier also move linearly in the optical axis direction, so that the relative positional relationship of the lenses AF or zoom functions are implemented.
  • a metal material is used in the opposite reflection of the first coil (C1) facing the first magnet (M1).
  • a yoke plate may be provided.
  • the first Hall sensor (H1) uses the Hall effect to detect the size and direction of the magnetic field generated from the first magnet (M1) in the opposite direction and outputs a corresponding signal to the driving driver.
  • the driving driver calculates and processes the signal input from the first Hall sensor (H1) and controls the result so that power of a magnitude and direction corresponding to the result is applied to the first coil (C1).
  • the detection of the first Hall sensor H1 and the control processing of the driving driver are preferably configured to be applied cyclically through feedback control so that driving precision can be further improved through time-series and continuous control.
  • the driving driver may be implemented as an independent electronic component or device, but may also be implemented as a single electronic component (chip) integrated with the first Hall sensor (H1) through SOC (System On Chip). Of course.
  • first coil (C1), the first Hall sensor (H1), etc. may be mounted on the circuit board (FPCB) 150 (FPCB) that is electrically/signally interfaced with external modules, power supplies, external devices, etc.
  • FPCB circuit board
  • a plurality of carriers 120 and 130 that linearly move along the optical axis may be provided.
  • the configurations described above in relation to the linear movement of the first carrier 120 are configurations related to the linear movement of the second carrier 130, which is another carrier (second coil (C2), second Hall sensor (H2), Since it can also be applied to 2 magnets (M2), etc., detailed descriptions of these are omitted.
  • a ball B is placed between the first carrier 120 and the housing 110 so that the first carrier 120 can move linearly more flexibly with minimized friction.
  • a first guiding rail (126, see FIG. 4) provided on the lower part of the first carrier 120 and a groove rail provided on the bottom of the housing 110 to effectively guide the linear movement of the first carrier 120. It is preferable that the ball B is placed between (111).
  • the ball B is configured so that a portion of it is accommodated in one or more of the groove rail 111 and/or the first guiding rail 126 so that effective guiding for linear movement is implemented. It is desirable.
  • the first carrier 120 can move linearly more flexibly and have the advantage of reducing noise and minimizing driving force, as well as improving driving precision.
  • the ball B can also be placed between the second guiding rail 136 (see FIG. 4) provided at the lower part of the second carrier 130 and the groove rail 111 of the housing 110.
  • the second guiding rail 136 see FIG. 4
  • both the first carrier 120 and the second carrier 130 are driven independently, based on the embodiment shown in FIG. 3, when the first carrier 120 moves linearly in the optical axis direction, the first carrier 120 ) moves in the optical axis direction, and when the second carrier 130 moves, the second lens (R2-1) mounted on the second carrier 130 moves accordingly. , R2-2) moves in the direction of the optical axis.
  • the second lens (R2-2) located between the first lenses (R1-1, R1-2) mounted on the first carrier 120 (based on the optical axis direction) is provided on the second carrier 130.
  • the number of lenses mounted on the first carrier 120 or the second carrier 130 may be different from the number illustrated in the drawing.
  • Figure 4 is a diagram showing the detailed configuration of the first carrier 120 according to an embodiment of the present invention.
  • the first carrier 120 of the present invention includes a first support member 121 made of a high-strength material such as metal to enhance the durability of the first carrier 120, and this first support member. (121) may be configured to include a first body portion 122 that is inserted and molded (injection molded, etc.).
  • the first support member 121 may be formed in a form including a plurality of units depending on the embodiment, but is preferably formed in an integrated form as shown in the drawing in order to increase durability and increase the efficiency of assembly molding.
  • the first carrier 120 is implemented by a method such as injection molding into which the first support member 121 is inserted. It can be configured so that the first part 121a, which is a part of the first support member 121, is exposed as shown in the drawing. Depending on the embodiment, the first carrier 120 may have a first space 125 where the first part 121a is exposed.
  • the first part 121a is a part facing the second carrier 130, and is a part of the first support member 121 that is exposed to the outside, so it can reduce the thickness or volume of the part facing the second carrier 130. You can.
  • the first carrier 120 includes a first guiding space 120A formed on the opposite side of the first part 121a or the first space 125 based on the optical axis.
  • this first guiding space (120A) is a space corresponding to the second part (131a) of the second support member 131 belonging to the second carrier 130 and guides the second part (131a). do.
  • the first carrier 120 is equipped with first lenses (R1-1, R1-2) so that a single or multiple first lenses (R1-1, R1-2) are installed spaced apart from each other, and based on the optical axis direction, It includes one or more first mounters 123 and 124 that are spaced apart from each other.
  • the first mounters 123 and 124 may be composed of a space formed by the first body portion 122, and depending on the embodiment, the first support member 121 together with the parts formed by the first body portion 122. It may be composed of a space formed by exposed parts.
  • a first guiding rail 126 on which balls B are disposed is formed in the lower part (based on the A yoke plate (not shown) made of material and a suction magnet (Ma) that generates attractive force may be provided.
  • the first carrier 120 is formed on the side opposite to the first part 121a based on the optical axis, and is equipped with a first magnet M1 facing the first coil C1 provided in the housing 110. It may include a first mounting unit 127.
  • the first guiding space 120A is preferably formed between the first mounting part 127 and the first mounter 123.
  • first carrier 120 and the second carrier 130 move independently, but also some parts of each can cross or overlap/intersect with each other without applying additional physical structures for guiding. It can be implemented as a stacked physical structure, which can further increase space utilization.
  • Figure 5 is a diagram showing the detailed configuration of the second carrier 130 according to an embodiment of the present invention.
  • the second carrier 130 has an overall structure that corresponds to the above-described first carrier 120, and is configured to have a structure or shape that is generally symmetrical to the first carrier 120.
  • the second carrier 130 is formed by inserting the second support member 131 so that the second support member 131 and the second part 131a, which is a part of the second support member 131, are exposed. Includes a second body portion 132.
  • the second part 131a of the second support member 131 exposed through the second space 135, etc. is a part that faces the above-described first carrier 120, and the second support member 131 is exposed to the outside as is. Since it is configured to be exposed, the thickness or volume of the portion facing the first carrier 120 can be reduced.
  • the second carrier 130 is formed in the opposite direction (based on the Y axis) of the second part 131a and is a second guiding space 130A that guides the first part 121a of the first carrier 120. ) includes.
  • the second part (131a) and the second guiding space (130A) of the second carrier 130 are the first part (121a) and the first guiding space (120A) of the previously described first carrier 120, respectively. It is located in the opposite direction.
  • the first part 121a of the first carrier 120 is located on the left side (based on the Y-axis direction) of the first carrier 120, the first part 121a exposed through the first space 125, etc.
  • the second guiding space 130A of the second carrier 130 that guides the first part 121a is also located in the left direction.
  • the first guiding space 120A of the first carrier 120 that is, the second support member 131 that belongs to the second carrier 130 and is exposed through the second space 135, etc.
  • the first guiding space 120A for guiding the second part 131a is located on the right side (based on the Y-axis direction) of the first carrier 120.
  • the second carrier 130 includes m second mounters 133 and 134 on which lenses are mounted (m is a natural number of 1 or more), and at least one of the second mounters 133 and 134 is one of the plurality of second mounters 133 and 134. It is configured to be located between 1 mounters 123 and 124 (based on the optical axis direction (Z axis)).
  • one of the second lenses (R2-1, R2-2) is provided between the plurality of first lenses (e.g., R1-1, R1-2) that move together while maintaining the same spacing. Since the above is located, various combinatorial applications are possible according to the movement of a plurality of lenses.
  • the second mounters 133 and 134 may be composed of a space formed by the second body 132, and depending on the embodiment, the second support member 131 together with the parts formed by the second body 132. It may be composed of a space formed by exposed parts.
  • a second guiding rail 136 on which balls B are disposed is formed at the lower part of the second carrier 120 (based on the (not shown) and a suction magnet (Ma) that generates attractive force may be provided.
  • the second carrier 130 is formed on the side in the opposite direction (based on the Y axis) of the second part 131a and is equipped with a second magnet (M2) facing the second coil (C2) provided in the housing 110. It may include a second mounting unit 137. In this case, as shown in FIG. 5, the second guiding space 130A is preferably formed between the second mounting part 137 and the second mounter 134.
  • Figure 6 is a diagram showing the first and second carriers 120 and 130 combined, and Figures 7 and 8 show the relationship in which the first carrier 120 and the second carrier 130 are combined. It is a drawing.
  • Figure 6 shows an embodiment of the actuator 100 in which both the first carrier 120 and the second carrier 130 move independently in the optical axis direction and a plurality of lenses are installed on each carrier 120 and 130.
  • a plurality of second lenses (R2-1, R2-2) spaced apart by an appropriate distance move in the direction of the optical axis.
  • various combinations are applied according to the relative distances of the first lens (R1-1, R1-2) and the second lens (R2-1, R2-2), and the magnification is continuously changed through this.
  • the zoom function is implemented.
  • the first carrier 120 and the second carrier 130 do not occupy their own separate spaces, but are configured so that a significant portion of the space overlaps or intersects each other through the structural application of the present invention described above.
  • first carrier 120 and the second carrier 130 are between the first part (121a) and the second guiding space (130A) and between the second part (131a) and the first guiding space ( 120A), some of the movement sections overlap through mutual guiding.
  • first carrier 120 and the second carrier 130 are structures in which objects that are relatively thinner than the injection structure, such as the first part 121a and the second part 131a, and the corresponding components face each other. Therefore, space efficiency can be further increased.
  • the first part 121a of the first support member 121 belonging to the first carrier 120 is the second guiding space 130A of the second carrier 130. ), and in this process, the second part (131a) of the second support member (131) belonging to the second carrier (130) may flow into the first guiding space (120A) of the first carrier (120). there is.
  • one of the first guiding space (120A) or the second guiding space (130A) has a shape in which the upper part (based on the On the contrary, one may be configured to have a shape in which the upper part is open and the lower part is blocked.
  • the drawing shows an embodiment in which the first carrier 120 is located on top of the second carrier 130.
  • the first part 121a of the first carrier 120 is in the second guiding space 130A of the second carrier 130
  • the first guiding space 120A of the first carrier 120 is in the second guiding space 130A of the second carrier 130.
  • Both carriers can be assembled by a simple method of positioning the second part (131a) of the second carrier (130) and combining the first carrier (120) in the direction of the second carrier (130), thereby increasing the efficiency of the assembly process. there is.
  • the first part (121a) and the second part (131a), which are parts of the inserted structure and are considerably thinner than the injection molded product, are connected to the corresponding second guiding space (130A) and first guiding space of different carriers. Since they face each other through (120A), the length in the width direction (Y-axis direction) can also be reduced, further improving spatial adaptability.
  • first carrier 120 and/or the second carrier 130 has high rigidity, such as a metal material, and is physically supported by an inserted support member, the rigidity of the carrier itself increases as well as the physical deformation of each carrier. or tilting on the optical axis can be suppressed more effectively.
  • first and second are merely instrumental terms used to relatively distinguish components from each other, and are therefore used to indicate a specific order, priority, etc. It should be interpreted that it is not a valid term.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lens Barrels (AREA)

Abstract

Un actionneur de commande de zoom selon la présente invention comprend : un premier support comprenant un premier élément de support, une première partie de corps dans laquelle le premier élément de support est inséré et moulé de telle sorte qu'une première partie, qui est une partie du premier élément de support, est exposée, et un premier espace de guidage formé sur le côté opposé de la première partie par rapport à un axe optique, et se déplaçant dans la direction d'axe optique par rapport à un boîtier; et un second support comprenant un second élément de support, une seconde partie de corps dans laquelle un second élément de support est inséré et moulé de telle sorte qu'une seconde partie, qui est une partie du second élément de support, est exposée, et un second espace de guidage formé dans la direction opposée de la seconde partie par rapport à l'axe optique, la première partie étant guidée au moyen du second espace de guidage et la seconde partie étant guidée au moyen du premier espace de guidage.
PCT/KR2023/002741 2022-04-19 2023-02-27 Actionneur de commande de zoom WO2023204428A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020220047917A KR20230148928A (ko) 2022-04-19 2022-04-19 줌 구동용 액추에이터
KR10-2022-0047917 2022-04-19

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WO2023204428A1 true WO2023204428A1 (fr) 2023-10-26

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PCT/KR2023/002741 WO2023204428A1 (fr) 2022-04-19 2023-02-27 Actionneur de commande de zoom

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KR (1) KR20230148928A (fr)
WO (1) WO2023204428A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080075641A (ko) * 2007-02-13 2008-08-19 파워옵틱스 주식회사 줌렌즈 배럴
KR20190106145A (ko) * 2018-03-08 2019-09-18 자화전자(주) 카메라용 액추에이터
KR20200110662A (ko) * 2019-01-03 2020-09-24 코어포토닉스 리미티드 적어도 하나의 2 상태 줌 카메라를 갖는 멀티-애퍼처 카메라
KR20200125221A (ko) * 2019-04-26 2020-11-04 엘지이노텍 주식회사 카메라 모듈 및 이를 포함하는 카메라 장치
CN215682428U (zh) * 2020-11-12 2022-01-28 磁化电子公司 变焦驱动致动器

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080075641A (ko) * 2007-02-13 2008-08-19 파워옵틱스 주식회사 줌렌즈 배럴
KR20190106145A (ko) * 2018-03-08 2019-09-18 자화전자(주) 카메라용 액추에이터
KR20200110662A (ko) * 2019-01-03 2020-09-24 코어포토닉스 리미티드 적어도 하나의 2 상태 줌 카메라를 갖는 멀티-애퍼처 카메라
KR20200125221A (ko) * 2019-04-26 2020-11-04 엘지이노텍 주식회사 카메라 모듈 및 이를 포함하는 카메라 장치
CN215682428U (zh) * 2020-11-12 2022-01-28 磁化电子公司 变焦驱动致动器

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