KR100824935B1 - Device for adjusting the focus of rense module - Google Patents

Device for adjusting the focus of rense module Download PDF

Info

Publication number
KR100824935B1
KR100824935B1 KR1020080015422A KR20080015422A KR100824935B1 KR 100824935 B1 KR100824935 B1 KR 100824935B1 KR 1020080015422 A KR1020080015422 A KR 1020080015422A KR 20080015422 A KR20080015422 A KR 20080015422A KR 100824935 B1 KR100824935 B1 KR 100824935B1
Authority
KR
South Korea
Prior art keywords
spring
coil
holder
lens module
focusing
Prior art date
Application number
KR1020080015422A
Other languages
Korean (ko)
Other versions
KR20080020662A (en
Inventor
김학권
Original Assignee
재영솔루텍 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 재영솔루텍 주식회사 filed Critical 재영솔루텍 주식회사
Priority to KR1020080015422A priority Critical patent/KR100824935B1/en
Publication of KR20080020662A publication Critical patent/KR20080020662A/en
Application granted granted Critical
Publication of KR100824935B1 publication Critical patent/KR100824935B1/en

Links

Images

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B3/00Focusing arrangements of general interest for cameras, projectors or printers
    • G03B3/02Focusing arrangements of general interest for cameras, projectors or printers moving lens along baseboard
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B7/00Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G02B7/10Mountings, 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
    • G02B7/102Mountings, 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 controlled by a microcomputer
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B13/00Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/32Means for focusing
    • G03B13/34Power focusing
    • G03B13/36Autofocus systems
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B3/00Focusing arrangements of general interest for cameras, projectors or printers
    • G03B3/10Power-operated focusing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/222Studio circuitry; Studio devices; Studio equipment ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, TV cameras, video cameras, camcorders, webcams, camera modules for embedding in other devices, e.g. mobile phones, computers or vehicles
    • H04N5/225Television cameras ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, camcorders, webcams, camera modules specially adapted for being embedded in other devices, e.g. mobile phones, computers or vehicles
    • H04N5/2257Mechanical and electrical details of cameras or camera modules for embedding in other devices

Abstract

본 발명은 디지털카메라 등에 장착되는 렌즈모듈의 초점을 자동으로 맞추는 초점조절장치에 관한 것으로;The present invention relates to a focus adjusting apparatus for automatically focusing a lens module mounted on a digital camera or the like;
홀더(11)와 커버(12)가 상호 결합되어 공간부(13)를 형성함은 물론 그 상/하부측에 상/하부스프링(21,22)이 각각 배치된 몸체부와; 상기 홀더(11)의 각모서리부에 장착되면서 상기 하부스프링(22)을 고정하는 스페이서(26)에 안착되는 영구자석(25)들을 통해 자기회로를 형성하는 자기회로부; 상기 영구자석(25)의 내주면에 위치함은 물론 상기 하부스프링(22)과 연결된 코일(31)의 인가전압에 따라 작동하는 캐리어(32)를 통해 렌즈모듈(35)을 직선이동시키는 구동부 및; 상기 코일(31)에 상기 하부스프링(22)을 통해 연결된 회로기판(37)을 통해 외부전원을 공급받는 전원부로 이루어져; A holder 11 and a cover 12 are coupled to each other to form a space 13, as well as a body part having upper and lower springs 21 and 22 disposed on upper and lower sides thereof; A magnetic circuit unit mounted to each corner of the holder 11 to form a magnetic circuit through permanent magnets 25 mounted on a spacer 26 fixing the lower spring 22; A driving unit for linearly moving the lens module 35 through a carrier 32 positioned on an inner circumferential surface of the permanent magnet 25 and operating according to an applied voltage of a coil 31 connected to the lower spring 22; A power unit receiving external power through a circuit board 37 connected to the coil 31 through the lower spring 22;
상기 초점조절장치의 요크를 배제한 상태에서 커버와 홀더를 이용하여 다수개의 영구자석을 고정함으로써, 영구자석 또는 코일의 전체 높이가 상대적으로 낮아짐으로써 장치의 전체높이를 줄일 수 있어 장치의 소형화가 가능해진다.By fixing a plurality of permanent magnets by using a cover and a holder in a state where the yoke of the focusing device is removed, the total height of the permanent magnet or coil is relatively low, so that the overall height of the device can be reduced, thereby miniaturizing the device. .
디지털카메라, 홀더, 커버, 스프링, 영구자석, 코일, 캐리어, 렌즈모듈 Digital Camera, Holder, Cover, Spring, Permanent Magnet, Coil, Carrier, Lens Module

Description

소형 렌즈모듈의 자동 초점조절 장치 {Device for adjusting the focus of rense module}Device for adjusting the focus of the small lens module {Device for adjusting the focus of rense module}
본 발명은 디지털카메라 등에 장착되는 렌즈모듈의 초점을 자동으로 맞추는 초점조절장치에 관한 것으로, 특히 초점조절장치에 구성된 구성부품의 결합구조 및 배치구조를 변경하여 렌즈모듈의 전체적인 높이를 줄일 수 있도록 한 소형 렌즈모듈의 자동 초점조절 장치에 관한 것이다. The present invention relates to a focusing apparatus for automatically focusing a lens module mounted on a digital camera, and more particularly, to reduce the overall height of a lens module by changing a coupling structure and an arrangement structure of components included in the focusing apparatus. It relates to an auto focusing device of a small lens module.
일반적으로, 디지털카메라 등과 같이 고화질 고화소를 요구하는 제품일수록 자동으로 화상의 초점을 맞추는 장치가 필요하며, 특히 화상의 초점을 자동으로 맞추기 위해서는 렌즈모듈을 직선운동시킬 수 있는 장치 예컨대, 디지털카메라의 경우 스텝모터나 디씨모터 등이 필요하다. In general, a product that requires high-resolution high pixels, such as a digital camera, requires an apparatus for automatically focusing an image. In particular, an apparatus capable of linearly moving a lens module to automatically focus an image, for example, a digital camera A step motor or DC motor is required.
그러나, 초점조절장치의 소형화가 힘들기 때문에 카메라 폰 등과 같은 소형 렌즈모듈에 대해서는 도 1 및 도 2에서와 같은 브이.씨.엠(Voice Coil Motor) 방식의 액츄에이터를 사용하고 있다. However, since miniaturization of the focusing device is difficult, a small coil module such as a camera phone is used with a V.C. (Voice Coil Motor) actuator as shown in FIGS. 1 and 2.
즉, 도 1 및 도 2에서와 같이, 초점조절장치는 커버(51)와 홀더(59)가 상호 결합되어 공간부(70)를 형성하되, 상기 공간부(70)의 내벽면에 요크(54)를 통해 자기회로를 구성하는 다수개의 영구자석(55)이 장착되며, 상기 영구자석(55)의 내주면에 코일(57)의 인가전류에 따라 렌즈모듈(60)을 직선운동시키는 캐리어(52)가 장착되는 한편, 상기 홀더(59)와 커버(51)에 캐리어(52)를 체결함과 더불어 외부전원이 입력되는 상/하부스프링(53,58)이 각각 장착된다. That is, as shown in Figures 1 and 2, the focusing device is coupled to the cover 51 and the holder 59 to form a space portion 70, but the yoke 54 on the inner wall surface of the space portion 70 A plurality of permanent magnets 55 constituting the magnetic circuit is mounted through the carrier, the carrier 52 for linearly moving the lens module 60 in accordance with the applied current of the coil 57 on the inner peripheral surface of the permanent magnet (55) The upper and lower springs 53 and 58 to which the carrier 52 is fastened to the holder 59 and the cover 51 and to which external power is input are mounted.
또한, 초점조절장치의 하부스프링(58)은 두 부분으로 나누어져 있으면서 코일(57)의 양 끝단과 전기적으로 연결되어 있는 상태이므로 전류를 입력받는 매개체로 이용되며, 초점조절장치의 상부스프링(53)은 코일의 전원이 해제되는 경우 캐리어(52)를 리턴시키는 기능을 수행한다.In addition, since the lower spring 58 of the focusing apparatus is divided into two parts and is electrically connected to both ends of the coil 57, the lower spring 58 is used as a medium for receiving current, and the upper spring 53 of the focusing apparatus is provided. ) Returns the carrier 52 when the coil is powered off.
따라서, 초점조절장치를 작동하기 위해 코일(57)에 전류를 공급하는 경우 코일(54)과 영구자석(55)의 상호 작용에 의해 상기 코일(54)과 결합된 캐리어(52)가 직선운동하므로 상기 렌즈(50)가 커버(51)의 외부로 돌출된다.Accordingly, when the current is supplied to the coil 57 to operate the focusing device, the carrier 52 coupled to the coil 54 is linearly moved by the interaction of the coil 54 and the permanent magnet 55. The lens 50 protrudes out of the cover 51.
반면에, 초점조절장치의 작동을 해제하기 위해 코일(57)에 인가된 전류를 차단하는 경우 상부스프링(53)의 탄성력에 의해 상기 렌즈(60)가 리턴되므로, 렌즈초점장치의 사용이 제한되는 것이다. On the other hand, when the current applied to the coil 57 to block the operation of the focusing device to block the lens 60 by the elastic force of the upper spring 53, the use of the lens focusing device is limited will be.
그런데, 렌즈초점장치들은 대부분 상기 요크(54)를 통해 영구자석(55)을 부착하여 자기회로를 형성하는 구성이므로, 상기 영구자석(55)과 요크(54)의 높이 및 코일(57)의 높이로 인하여 렌즈초점장치의 높이를 줄이는 데에 한계가 있어 소형화가 어려운 문제점이 있었다. However, since most lens focusing devices are configured to form a magnetic circuit by attaching the permanent magnet 55 through the yoke 54, the height of the permanent magnet 55 and the yoke 54 and the height of the coil 57 are increased. Due to this, there is a limit in reducing the height of the lens focusing device, which makes it difficult to miniaturize.
이에, 본 발명은 상기한 바와 같은 제문제점을 해결하기 위하여 안출된 것으로서, 초점조절장치에 구성된 각종 구성부품의 결합구조 및 배치구조를 변경하여 렌즈모듈의 전체적인 높이를 줄일 수 있도록 한 소형 렌즈모듈의 자동 초점조절 장치를 제공하는 데에 그 목적이 있다.Accordingly, the present invention has been made to solve the problems described above, by changing the coupling structure and arrangement of the various components of the focusing device to reduce the overall height of the lens module of the lens module The purpose is to provide an auto focusing device.
상기한 목적을 달성하기 위한 본 발명은; 각모서리부에 각각의 안착돌기가 형성된 홀더와 커버가 상호 결합되어 공간부를 형성함은 물론 그 상/하부측에 상/하부스프링이 배치된 몸체부와; 상기 홀더의 각모서리부에 장착됨은 물론 상기 하부스프링을 고정하는 스페이서의 상면에 안착되는 다수개의 영구자석을 통해 자기회로를 형성하는 자기회로부; 상기 영구자석의 내주면에 위치함은 물론 상기 하부스프링과 전기적으로 연결된 코일의 인가전압에 따라 작동하는 캐리어를 통해 렌즈모듈을 직선이동시키는 구동부 및; 상기 코일에 상기 하부스프링을 매개로 전기적으로 연결된 회로기판을 통해 외부전원을 공급받는 전원부로 구성된다.The present invention for achieving the above object; A body part having upper and lower springs disposed on upper and lower sides thereof, as well as a space formed by coupling the holder and the cover, each of which has a seating protrusion formed at each corner, to each other; A magnetic circuit unit mounted to each corner of the holder as well as forming a magnetic circuit through a plurality of permanent magnets seated on an upper surface of a spacer for fixing the lower spring; A driving unit which is positioned on the inner circumferential surface of the permanent magnet and linearly moves the lens module through a carrier operated according to an applied voltage of a coil electrically connected to the lower spring; The power supply unit receives external power through a circuit board electrically connected to the coil via the lower spring.
이상에서 설명한 바와 같이 본 발명에 따른 소형 렌즈모듈의 자동 초점조절 장치에 의하면, 초점조절장치에 구성되는 요크를 배제한 상태에서 커버와 홀더를 이용하여 다수개의 영구자석을 고정함으로써, 영구자석 또는 코일의 전체 높이가 상대적으로 낮아져 장치의 전체높이를 줄일 수 있으므로 카메라장치의 소형화가 가능해지는 효과가 있는 것이다. As described above, according to the automatic focusing apparatus of the small lens module according to the present invention, by fixing a plurality of permanent magnets by using a cover and a holder in a state in which the yoke configured in the focusing apparatus is excluded, Since the overall height is relatively low, the overall height of the device can be reduced, thereby miniaturizing the camera device.
이하, 본 발명에 따른 실시예를 설명하면 다음과 같다. Hereinafter, an embodiment according to the present invention will be described.
도 3은 본 발명에 따른 자동초점조절장치로서, 도 3a 내지 도 3d는 자동초점조절장치의 분해사시도와 결합단면도와 조립도와 자기회로도이다.Figure 3 is an automatic focusing apparatus according to the present invention, Figures 3a to 3d is an exploded perspective view, a combined sectional view, an assembly view and a magnetic circuit diagram of the automatic focus control device.
각모서리부에 각각의 안착돌기(11-1,12-1)가 형성된 홀더(11)와 커버(12)가 상호 결합되어 공간부(13)를 형성함은 물론 그 상/하부측에 상부스프링(21)과 하부스프링(22)이 각각 배치된 몸체부와; 상기 홀더(11)의 각모서리부에 장착됨은 물론 상기 하부스프링(22)을 고정하는 스페이서(26)의 상면에 안착되는 다수개의 영구자석(25)을 통해 자기회로를 형성하는 자기회로부; 상기 영구자석(25)의 내주면에 위치함은 물론 상기 하부스프링(22)과 전기적으로 연결된 코일(31)의 인가전압에 따라 작동하는 캐리어(32)를 통해 렌즈모듈(35)을 직선이동시키는 구동부 및; 상기 코일(31)에 상기 하부스프링(22)을 매개로 전기적으로 연결된 회로기판(37)을 통해 외부전원을 공급받는 전원부로 이루어진다. The holder 11 and the cover 12 having the respective seating protrusions 11-1 and 12-1 formed on the corners thereof are coupled to each other to form a space 13, as well as an upper spring on the upper and lower sides thereof. A body portion having 21 and lower springs 22 disposed thereon; A magnetic circuit unit mounted to each corner of the holder 11 to form a magnetic circuit through a plurality of permanent magnets 25 mounted on an upper surface of the spacer 26 fixing the lower spring 22; The driving unit for linearly moving the lens module 35 through the carrier 32 which is located on the inner circumferential surface of the permanent magnet 25 and operates according to the applied voltage of the coil 31 electrically connected to the lower spring 22. And; The coil 31 includes a power supply unit that receives external power through a circuit board 37 electrically connected to the lower spring 22.
먼저, 몸체부는, 소형렌즈모듈의 외관을 이룸과 더불어 구성부품을 수용하는 것으로서, 홀더(11)와 커버(12)가 상호 결합되어 이후에 설명하는 각종 구성부품을 수용하기 위한 공간부(13)를 형성한다.First, the body part, as well as the appearance of the compact lens module to accommodate the components, the holder 11 and the cover 12 are coupled to each other, the space portion 13 for accommodating various components described later To form.
또한, 홀더(11)의 상면 각모서리부에 안착돌기(11-1)가 형성되면서, 커버(12)의 하면 각모서리부에 안착돌기(12-1)가 형성된다. In addition, while the seating protrusions 11-1 are formed at the upper corners of the holder 11, the seating protrusions 12-1 are formed at the corners of the lower surface of the cover 12.
이때, 홀더(11)와 커버(12)의 형상을 가능한 사각형상으로 형성하여 4모서리부에 각각의 안착돌기를 형성하는 것이 바람직하기는 하지만, 그 밖에도 원형 또는 다각형으로 형성할 수도 있다.At this time, the shape of the holder 11 and the cover 12 is preferably formed in a quadrangular shape to form the respective seating projections on the four corners, but may also be formed in a circular or polygonal.
또한, 상기 커버(12)의 천정면에 상부스프링(21)이 배치되면서, 상기 홀더(11)의 바닥면에 하부스프링(22)이 배치되며, 특히 상/하부스프링(21,22)은 그 모서리부분에 상기 홀더(11) 또는 커버(12)에 기둥(미도시)을 통해 각각 고정되는 각각의 홀(21-1,22-1)이 형성된다.In addition, while the upper spring 21 is disposed on the ceiling surface of the cover 12, the lower spring 22 is disposed on the bottom surface of the holder 11, in particular the upper / lower springs (21, 22) Holes 21-1 and 22-1 are formed at corners of the holder 11 or the cover 12, respectively, which are fixed through pillars (not shown).
그리고, 자기회로부는, 영구자석을 이용하여 전류와 직교하는 방향으로 자속을 발생시키는 것으로서, 상기 홀더(11)의 각모서리부에 형성된 안착돌기(11-1)에 장착된 다수개의 영구자석(25)으로 구성되며, 특히 상기 영구자석(25)을 가능한 삼각형 형태로 성형함이 바람직하다. In addition, the magnetic circuit unit generates magnetic flux in a direction orthogonal to the current by using the permanent magnet, and the plurality of permanent magnets 25 mounted on the mounting protrusions 11-1 formed at each corner of the holder 11. It is preferable that the permanent magnet 25 is formed in a triangle shape as possible.
이때, 홀더(11)의 각모서리부에 영구자석(25)이 고정됨으로 인해, 종래 기술에서와 같은 요크가 배제된 것임은 당연하다. 또한, 영구자석(25)이 상기 코일(31)의 축 방향으로 N극이 되도록 착자된 것임은 당연하다.At this time, since the permanent magnet 25 is fixed to each corner portion of the holder 11, it is natural that the yoke as in the prior art is excluded. In addition, it is obvious that the permanent magnet 25 is magnetized so as to be the N pole in the axial direction of the coil 31.
또한, 홀더(11)의 바닥면에 안착되는 하부스프링(22)은 스페이서(26)를 통해 고정되며, 특히 스페이서(26)는 영구자석(25)과 접촉된다. In addition, the lower spring 22 seated on the bottom surface of the holder 11 is fixed through the spacer 26, in particular the spacer 26 is in contact with the permanent magnet 25.
그리고, 구동부는, 상기 공간부(13)에 수용되면서 자기회로부와 직교하는 방향으로 구동력을 발생하여 렌즈모듈(35)을 왕복이동시키는 것으로서, 상기 자기회 로부의 측부에 장착되면서 그 하부측의 돌기에 하부스프링(22)이 열융착된 캐리어(32)와, 이 캐리어(32)에 접촉된 코일(31)로 이루어진다. In addition, the driving unit, which is accommodated in the space 13 and generates a driving force in a direction orthogonal to the magnetic circuit unit to reciprocate the lens module 35, is mounted on the side of the magnetic circuit unit while the projection of the lower side The lower spring 22 is formed of a carrier 32 heat-sealed and a coil 31 in contact with the carrier 32.
그리고, 전원부는, 구동부의 작동에 필요한 전원을 공급하는 것으로서, 코일(31)에 납땜을 통해 연결된 하부스프링(22)과, 이 하부스프링(22)에 납땜을 통해 연결된 회로기판(37)으로 이루어진다. The power supply unit supplies power required for operation of the driving unit, and includes a lower spring 22 connected to the coil 31 by soldering and a circuit board 37 connected to the lower spring 22 by soldering. .
이하, 본 실시예에 따른 작용을 설명하면 다음과 같다.Hereinafter, the operation according to the present embodiment will be described.
먼저, 자동초점장치를 구성하려는 경우, 일단 렌즈모듈(35)이 장착된 캐리어(32)에 코일(31)을 결합한 다음, 캐리어(32)의 하부에 형성된 돌기에 하부스프링(24)을 열융착시킨 다음, 코일(31)의 양끝단에 하부스프링(22)에 각각 납땜하여 홀더(11)에 안착시킨다. First, in order to configure the autofocusing device, once the coil 31 is coupled to the carrier 32 on which the lens module 35 is mounted, and then the lower spring 24 is thermally fused to the protrusion formed at the lower portion of the carrier 32. Then, soldered to the lower spring 22 at both ends of the coil 31 to be seated on the holder (11).
그런 다음, 스페이서(26)을 이용해 하부스프링(22)을 홀더(11)에 결합시킨 다음 영구자석(25)을 안착시킨 후 상부스프링(21)을 캐리어(32)의 상측에 결합한 뒤 커버(12)을 조립하여 결합한다. Then, the lower spring 22 is coupled to the holder 11 by using the spacer 26, and then the permanent magnet 25 is seated, the upper spring 21 is coupled to the upper side of the carrier 32, and then the cover 12 is attached. ) Assemble and combine.
이어서, 하부스프링(22)의 외부로 튀어나온 방향으로 회로기판(37)를 부착하고 납땜시켜 외부로부터 전류를 공급받을 수 있게 한다.Subsequently, the circuit board 37 is attached and soldered in a direction protruding to the outside of the lower spring 22 to receive current from the outside.
이렇게 하면, 구동부의 직선운동은 플레밍의 왼손법칙에 의해 자속과 직교하게 전류가 흐를 때 전류의 직교하는 방향으로 힘이 발생한다.In this way, the linear motion of the drive unit generates a force in the direction perpendicular to the current when the current flows perpendicularly to the magnetic flux by the Fleming's left-hand law.
이로 인해, 커버(12)와 홀더(11)의 결합부분에 위치한 다수개의 영구자속(25)에 의해 자속이 발생한다.For this reason, magnetic flux is generated by the plurality of permanent magnetic fluxes 25 located at the engaging portion of the cover 12 and the holder 11.
즉, 영구자석(25)의 착자 방향은 도 4d에서와 같이 홀더(11)의 코너부에 위 치하면서 코일(31)의 중심방향이 N극이 되도록 착자된 다수개의 영구자석(25)에 의해 발생하는 것이다.That is, the magnetization direction of the permanent magnet 25 is located by the corner portion of the holder 11, as shown in Figure 4d by a plurality of permanent magnets 25 magnetized so that the central direction of the coil 31 is the N pole It happens.
이때, 코일(31)에 전압을 인가하여 전류를 점점 증가하게 하면 발생된 전자기력이 구동부를 초기위치에 고정시키고있는 상/하부스프링(21,22)의 탄성복원력보다 크게 되는 시점에서 구동부가 움직이기 시작한다. At this time, if the current is gradually increased by applying a voltage to the coil 31, the driving unit is moved when the generated electromagnetic force is greater than the elastic restoring force of the upper / lower springs 21 and 22 which fix the driving unit to the initial position. To start.
점점 전압을 높이면 구동부는 선형직선운동을 하며 이동하며 전압을 낮추게 되면 그 반대방향으로 선형직선운동을 하게 된다. 또한 전류공급을 차단하면 상/하부스프링(21,22)의 탄성복원력에 의해 구동부는 본래의 위치로 돌아오게 된다.As the voltage increases, the driving unit moves in a linear linear motion. When the voltage decreases, the driving linear motion moves in the opposite direction. In addition, when the current supply is cut off, the driving unit returns to its original position by the elastic restoring force of the upper and lower springs 21 and 22.
도 1은 종래 기술에 따른 자동초점조절장치의 분해사시도,1 is an exploded perspective view of an automatic focusing apparatus according to the prior art,
도 2는 종래 기술에 따른 자동초점조절장치의 결합단면도,2 is a cross-sectional view of the combination of the automatic focusing apparatus according to the prior art,
도 3은 본 발명에 따른 자동초점조절장치로서, 3a는 자동초점조절장치의 분해사시도이며, 3b는 자동초점조절장치의 결합단면도이고, 3c은 자동초점조절장치의 조립도이며, 도 3d는 자동초점조절장치의 자기회로도이다.3 is an automatic focusing apparatus according to the present invention, 3a is an exploded perspective view of the automatic focusing apparatus, 3b is a combined cross-sectional view of the automatic focusing apparatus, 3c is an assembly view of the automatic focusing apparatus, Figure 3d is an automatic Magnetic circuit diagram of focusing device.
도 4는 본 발명에 따른 자동초점조절장치의 타실시예로서, 4a는 자동초점조절장치의 분해사시도이며, 4b는 자동초점조절장치의 결합단면도이고, 4c은 자동초점조절장치의 조립도이며, 도 4d는 자동초점조절장치의 자기회로도이다.Figure 4 is another embodiment of the automatic focusing apparatus according to the present invention, 4a is an exploded perspective view of the automatic focusing apparatus, 4b is a combined cross-sectional view of the automatic focusing apparatus, 4c is an assembly view of the automatic focusing apparatus, 4D is a magnetic circuit diagram of the autofocus control device.
도 4는 본 발명에 따다. 4 is in accordance with the present invention.
* 도면 중 주요부분에 대한 부호의 설명* * Explanation of symbols for main parts of the drawings *
11 : 홀더 12 : 커버11: holder 12: cover
21,22 : 상/하부스프링 25 : 영구자석21,22: Upper / lower spring 25: Permanent magnet
31 : 코일 32 : 캐리어31 coil 32 carrier
35 : 렌즈모듈 37 : 회로기판 35 lens module 37 circuit board

Claims (4)

  1. 각모서리부에 각각의 안착돌기(11-1,12-1)가 형성된 홀더(11)와 커버(12)가 상호 결합되어 공간부(13)를 형성함은 물론 그 상/하부측에 상부스프링(21)과 하부스프링(22)이 각각 배치된 몸체부와; The holder 11 and the cover 12 having the respective seating protrusions 11-1 and 12-1 formed on the corners thereof are coupled to each other to form a space 13, as well as an upper spring on the upper and lower sides thereof. A body portion having 21 and lower springs 22 disposed thereon;
    상기 홀더(11)의 각모서리부에 장착됨은 물론 상기 하부스프링(22)을 고정하는 스페이서(26)의 상면에 안착되는 다수개의 영구자석(25)을 통해 자기회로를 형성하는 자기회로부; A magnetic circuit unit mounted to each corner of the holder 11 to form a magnetic circuit through a plurality of permanent magnets 25 mounted on an upper surface of the spacer 26 fixing the lower spring 22;
    상기 영구자석(25)의 내주면에 위치함은 물론 상기 하부스프링(22)과 전기적으로 연결된 코일(31)의 인가전압에 따라 작동하는 캐리어(32)를 통해 렌즈모듈(35)을 직선이동시키는 구동부 및; The driving unit for linearly moving the lens module 35 through the carrier 32 which is located on the inner circumferential surface of the permanent magnet 25 and operates according to the applied voltage of the coil 31 electrically connected to the lower spring 22. And;
    상기 코일(31)에 상기 하부스프링(22)을 매개로 전기적으로 연결된 회로기판(37)을 통해 외부전원을 공급받는 전원부로; A power supply unit that receives external power through a circuit board 37 electrically connected to the coil 31 via the lower spring 22;
    이루어진 것을 특징으로 하는 소형 렌즈모듈의 자동 초점조절 장치.Automatic focusing device of a small lens module, characterized in that made.
  2. 제 1항에 있어서, 상기 자기회로부는, The method of claim 1, wherein the magnetic circuit unit,
    상기 영구자석(25)이 상기 코일(31)의 축 방향으로 N극이 되도록 착자된 것을 특징으로 하는 소형 렌즈모듈의 자동 초점조절 장치. The permanent magnet 25 is a magnetized auto focusing device of the small lens module, characterized in that the magnetized so that the N pole in the axial direction of the coil (31).
  3. 제 1항에 있어서, 상기 상/하부스프링(21,22)은,The method of claim 1, wherein the upper and lower springs (21, 22),
    그 모서리부분에 상기 홀더(11) 또는 커버(12)에 기둥을 통해 고정되는 각각의 홀(21-1,22-1)이 형성된 것을 특징으로 하는 소형 렌즈모듈의 자동 초점조절 장치. Auto-focusing device of a small lens module, characterized in that each of the holes (21-1, 22-1) is fixed to the holder (11) or the cover 12 through the pillar at its corners.
  4. 제 1항에 있어서, 상기 하부스프링(22)과 회로기판(37)은 납땜을 통해 연결되어 외부로부터 전류를 인가받는 것을 특징으로 하는 소형 렌즈모듈의 자동 초점조절 장치. The apparatus of claim 1, wherein the lower springs (22) and the circuit board (37) are connected by soldering to receive a current from the outside.
KR1020080015422A 2008-02-20 2008-02-20 Device for adjusting the focus of rense module KR100824935B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020080015422A KR100824935B1 (en) 2008-02-20 2008-02-20 Device for adjusting the focus of rense module

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020080015422A KR100824935B1 (en) 2008-02-20 2008-02-20 Device for adjusting the focus of rense module

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
KR1020060071502A Division KR20080010861A (en) 2006-07-28 2006-07-28 Device for adjusting the focus of rense module

Publications (2)

Publication Number Publication Date
KR20080020662A KR20080020662A (en) 2008-03-05
KR100824935B1 true KR100824935B1 (en) 2008-04-28

Family

ID=39395480

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020080015422A KR100824935B1 (en) 2008-02-20 2008-02-20 Device for adjusting the focus of rense module

Country Status (1)

Country Link
KR (1) KR100824935B1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101072404B1 (en) * 2010-07-22 2011-10-11 넥스타테크놀로지 주식회사 Yoke-free automatic focus control device for a camera
WO2012115357A2 (en) * 2011-02-24 2012-08-30 (주)하이소닉 Autofocus and image stabilization apparatus for a camera, and miniature camera including same
KR101197077B1 (en) * 2011-02-24 2012-11-07 주식회사 하이소닉 Autofocusing and optical image stabilizing apparutus for camera, and the camera with the same
KR101343197B1 (en) 2012-09-07 2013-12-19 삼성전기주식회사 Camera module
KR101499841B1 (en) * 2013-10-25 2015-03-10 주식회사 하이소닉 Camera actuator with auto focusing and optical image stabilizer for portable device
WO2015046761A1 (en) * 2013-09-30 2015-04-02 (주)하이소닉 Camera actuator for portable terminal having autofocusing and image stabilization functions

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101645640B (en) * 2008-08-05 2012-03-28 鸿富锦精密工业(深圳)有限公司 Voice coil motor
KR100964543B1 (en) * 2008-10-31 2010-06-21 주식회사 하이소닉 Cover for compact image photographing device and making methode of the same and compact image photographing device with the same
KR101220713B1 (en) * 2009-12-31 2013-01-10 엘지이노텍 주식회사 Voice coil motor
KR101889017B1 (en) * 2011-09-22 2018-08-21 엘지이노텍 주식회사 Voice coil motor
KR102144490B1 (en) * 2013-07-17 2020-08-14 엘지이노텍 주식회사 Camera module
KR102015832B1 (en) * 2018-08-09 2019-08-29 엘지이노텍 주식회사 Voice coil motor
CN111212199A (en) * 2018-11-21 2020-05-29 北京小米移动软件有限公司 Driving mechanism, camera module and electronic equipment

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101072404B1 (en) * 2010-07-22 2011-10-11 넥스타테크놀로지 주식회사 Yoke-free automatic focus control device for a camera
WO2012115357A2 (en) * 2011-02-24 2012-08-30 (주)하이소닉 Autofocus and image stabilization apparatus for a camera, and miniature camera including same
KR101197077B1 (en) * 2011-02-24 2012-11-07 주식회사 하이소닉 Autofocusing and optical image stabilizing apparutus for camera, and the camera with the same
WO2012115357A3 (en) * 2011-02-24 2012-12-06 (주)하이소닉 Autofocus and image stabilization apparatus for a camera, and miniature camera including same
KR101343197B1 (en) 2012-09-07 2013-12-19 삼성전기주식회사 Camera module
WO2015046761A1 (en) * 2013-09-30 2015-04-02 (주)하이소닉 Camera actuator for portable terminal having autofocusing and image stabilization functions
CN104995556A (en) * 2013-09-30 2015-10-21 爱斯尼克电子有限公司 Camera actuator for portable terminal having autofocusing and image stabilization functions
US10185155B2 (en) 2013-09-30 2019-01-22 G2Hysonic Co., Ltd. Camera actuator for portable terminal having autofocusing and image stabilization functions
KR101499841B1 (en) * 2013-10-25 2015-03-10 주식회사 하이소닉 Camera actuator with auto focusing and optical image stabilizer for portable device

Also Published As

Publication number Publication date
KR20080020662A (en) 2008-03-05

Similar Documents

Publication Publication Date Title
KR100824935B1 (en) Device for adjusting the focus of rense module
KR101825731B1 (en) Camera lens module with structure for optical image stabilization
KR100490253B1 (en) A device to focus automatically in optical lens
US8009373B2 (en) Lens actuator
JP2008197671A (en) Voice coil motor
JP2008299103A (en) Camera module
JP5880816B2 (en) Lens drive device
KR101221316B1 (en) Camera module with function of autofocus
JP2008233847A (en) Switching device for photographic lens
JP2007155801A (en) Camera module
TW201109810A (en) Photographing module
KR20080010861A (en) Device for adjusting the focus of rense module
KR20110068504A (en) Lens actuators fabricated with low cost and small size
JP2014052544A (en) Lens drive device
KR20070062440A (en) Device for controlling auto convergence of small optical lens
KR20130055288A (en) Voice coil motor and driving method thereof
KR20080076364A (en) Actuator for miniature optical lens
KR101206716B1 (en) Camera module with function of autofocus
KR100817033B1 (en) Device for adjusting the focus of camera lens module
KR20100124135A (en) Lens actuator for image pickup apparatus
JP5985259B2 (en) Electronic devices equipped with camera modules with image stabilization
KR20100062657A (en) Lens actuator for image pickup apparatus
KR101079026B1 (en) Auto-focus optical device and imaging apparatus adopting the device
KR20180082384A (en) Voice coil motor and driving method thereof
JP3130818U (en) Micro lens multi-stage focusing structure

Legal Events

Date Code Title Description
A107 Divisional application of patent
A201 Request for examination
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20130408

Year of fee payment: 6

FPAY Annual fee payment

Payment date: 20140408

Year of fee payment: 7

FPAY Annual fee payment

Payment date: 20150421

Year of fee payment: 8

FPAY Annual fee payment

Payment date: 20160419

Year of fee payment: 9

FPAY Annual fee payment

Payment date: 20170306

Year of fee payment: 10

FPAY Annual fee payment

Payment date: 20180417

Year of fee payment: 11

FPAY Annual fee payment

Payment date: 20190320

Year of fee payment: 12