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WO2019004583A1 - Mobile terminal camera module - Google Patents

Mobile terminal camera module Download PDF

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Publication number
WO2019004583A1
WO2019004583A1 PCT/KR2018/004990 KR2018004990W WO2019004583A1 WO 2019004583 A1 WO2019004583 A1 WO 2019004583A1 KR 2018004990 W KR2018004990 W KR 2018004990W WO 2019004583 A1 WO2019004583 A1 WO 2019004583A1
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WO
WIPO (PCT)
Prior art keywords
carrier
ball guide
magnet
camera module
base
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/KR2018/004990
Other languages
French (fr)
Korean (ko)
Inventor
한민석
양시우
손원민
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.)
Rbk Emd Co ltd
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Rbk Emd Co ltd
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Filing date
Publication date
Application filed by Rbk Emd Co ltd filed Critical Rbk Emd Co ltd
Publication of WO2019004583A1 publication Critical patent/WO2019004583A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/32—Means for focusing
    • G03B13/34—Power focusing
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/02—Bodies
    • G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
    • 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
    • G03B5/02—Lateral adjustment of lens
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices

Definitions

  • the present invention relates to a camera module for a portable terminal, and more particularly, to a camera module for a portable terminal having a ball guide structure for adjusting a focus of the camera.
  • a camera module is manufactured in a small size and is applied to a portable terminal such as a smart phone or an IT device.
  • Such a camera module is manufactured by using an image sensor such as a CCD or a CMOS as a main component.
  • the camera module condenses an image of an object through the image sensor and is stored as data on a memory in a device such as a portable terminal. And outputted as an image through a display medium.
  • a high-resolution camera module capable of performing automatic focus adjustment, zooming, and the like is mounted on a small electronic device such as a portable terminal.
  • the auto-focusing or zooming function is performed while moving the lens barrel including one or more lenses along the optical axis by a predetermined distance.
  • the housing and the lens barrel are connected to each other by an elastic means such as a leaf spring or an elastic wire, and the lens barrel is supported by the elastic means.
  • an elastic means such as a leaf spring or an elastic wire
  • the camera module is miniaturized and increased in size, it is required to realize a longer driving distance with a smaller current input, and the strength of the elastic means is required to be designed in a decreasing direction.
  • Patent Document 10-0961127 is disclosed in Patent Document 10-0961127. 1 is a view schematically showing the structure of a conventional camera module.
  • the conventional camera module includes a housing, a fixed unit fixed in the housing, a lens barrel accommodated in the housing and accommodating at least one lens, a lens barrel supported to the fixed unit by a predetermined magnetic force, And a moving unit for moving the barrel along the optical axis.
  • the conventional camera module has two rows of ball members disposed on either side, the size of the magnet member 33 that can be mounted between the two rows of ball members is limited. Accordingly, it is difficult to increase the size of the ball member for stable movement of the lens barrel, and since the space for mounting the magnet member is narrow, the magnetic force efficiency is lowered due to the restriction of the size of the magnet member.
  • Patent Document 1 Korean Patent Registration No. 10-0961127 (Jun. 2010)
  • the present invention has been made to solve the above problems, and it is an object of the present invention to provide a zoom lens capable of effectively using an internal space, moving a lens position to raise a driving force for adjusting a focus of a camera, And a camera module for a portable terminal.
  • a camera module for a portable terminal comprising: a base having a receiving space therein; A carrier inserted in the accommodation space and moving in a direction parallel to the optical axis of the lens; A coil and a magnet for generating a driving force to move the carrier; A first yoke mounted on the base or the carrier and generating attraction between the magnet and the base; And a first ball guide portion and a second ball guide portion formed of a plurality of ball members for guiding the movement of the carrier between the base and the carrier, and attraction force generated between the magnet and the first yoke is transmitted to the first ball guide And the second ball guide portion supports the carrier against the rotational force.
  • the first guide groove is formed on one side of the carrier, and the first guide groove is formed on either side of the mounting portion.
  • the present invention relates to a camera module for a portable terminal having a ball guide structure, in which a carrier moving in a direction parallel to an optical axis generates a rotational force about a first ball guide portion as a central axis, thereby preventing sagging and tilting of the carrier, can do.
  • the camera module for a portable terminal of the present invention can increase the size of the magnet and increase the driving force for moving the carrier by extending the remaining space to the mounting space of the magnet by arranging the ball guide portion on either side of the magnet. .
  • the camera module for a portable tamer according to the present invention can utilize the internal space efficiently by applying the structure in which the position of the second ball guide portion is changed, the size of the ball member can be increased, It is possible to prevent the ball member from being picked up and released when it occurs.
  • Fig. 1 is a schematic view showing a structure of a conventional camera module.
  • FIG. 2 is a perspective view of a camera module for a portable terminal according to an embodiment of the present invention
  • FIG 3 is an exploded perspective view of a camera module for a portable terminal according to an embodiment of the present invention.
  • FIG. 4 is a sectional view of a camera module for a portable terminal according to an embodiment of the present invention.
  • the present invention relates to a camera module for a portable terminal having a ball guide structure for adjusting a focus of a camera, and more particularly, to a camera module for generating a rotational force with a first ball guide portion as a central axis in a carrier moving in a direction parallel to an optical axis, It is possible to prevent sagging and tilting of the motor and ensure stable vertical driving.
  • a camera module for a portable terminal includes a base 100, a carrier 200, a first ball guide 310, a second ball guide 320 And a cover (not shown) covering the upper portion of the base 100.
  • the base 100 is formed in a substantially hexahedral shape, and a receiving space 101 into which the carrier 200 is inserted is formed.
  • a through hole 102 is formed on one surface of the base 100 and the circuit board 110 is mounted on the outer surface of the base 100 so as to cover the through hole 102.
  • a coil 120, a sensor 130, and a first yoke 140 are mounted on the circuit board 110.
  • the coil 120 is mounted on the inner surface of the circuit board 110 facing the receiving space 101 and is disposed in the through hole 102.
  • a sensor 130 for sensing the displacement of the carrier 200 is mounted on the inner surface of the circuit board 110.
  • the first yoke 140 is mounted on the outer surface of the circuit board 110. That is, the coil 120 and the first yoke 140 are mounted at the same positions on both sides of the circuit board 110 with the circuit board 110 as the center.
  • a vertical groove 103 is formed on one side of the base 100 on which the through hole 102 is formed, on the inner side facing the accommodation space 101. These vertical grooves 103 are formed near the front right edge of the base 100 as shown in Figs. Vertical protrusions 104 are protruded from the inner surface of the base 100. Vertical protrusions 104 are formed near the rear left edge of base 100.
  • the carrier 200 is equipped with one or more lenses (not shown).
  • the carrier 200 is inserted into the accommodation space 101 and can move in a direction parallel to the optical axis of the lens.
  • a mounting portion 201 is formed on one side of the carrier 200.
  • a second yoke 210 and a magnet 220 are mounted on the mounting portion 201. That is, the second yoke 210 is mounted on the mounting portion 201 and the magnet 220 is mounted on the second yoke 210.
  • the magnet 220 is divided into two parts. The magnet 220 forms a magnetic field around the coil 120 facing the coil 120 mounted on the base 100 and generates attraction between the magnet 220 and the first yoke 140.
  • a first guide groove 202 is formed on one side of the carrier 200. As shown in FIG. 4, the first guide groove 202 is formed on the right side of the mounting portion 201 so as to face the vertical groove 103. Further, the carrier 200 is provided with a second guide groove 203 at a position facing the vertical projection 104.
  • the first ball guide 310 is disposed between the first guide groove 202 and the vertical groove 103.
  • the first ball guide 310 is formed of three ball members, and one ball member located between the two ball members is smaller in diameter than the other two ball members.
  • the second ball guide is disposed between the second guide groove (203) and the vertical projection (104).
  • the second ball guide 320 is also formed of three ball members and is the same as the first ball guide 310.
  • the carrier 200 is pulled toward the front where the first yoke 140 is located by the attraction force N generated between the magnet 220 and the first yoke 140.
  • a rotational force T is generated in the carrier 200 about the first ball guide 310 as a center axis by the first ball guide 310 at one side (right side in the drawing) of the magnet 220.
  • the second ball guide 320 inserted into the second guide groove 203 and in contact with the vertical protrusion 104 supports the carrier 200 against the rotational force T.
  • the carrier 200 is supported by the first ball guide portion 310 and the second ball guide portion 320 in the receiving space 101 by using the rotational force acting in this way.
  • a current flows through the coil 120 The carrier 200 moves in a direction parallel to the optical axis.
  • the sensor 130 senses a change in a magnetic field generated by the magnet 220 and provides feedback information on the driving of the carrier 200.
  • the second ball guide portion 320 includes a first ball guide portion 310 and driving sources (coil 120 and magnet 220) It is possible to minimize the deflection and tilting of the carrier 200 and to perform the stable up-and-down driving because the carrier 200 is not concentrated on either side of the carrier 200 but is spaced apart.
  • the magnet 220 can be increased in size by increasing the mounting space of the magnet 220, and the driving force for moving the carrier 200 can be increased.
  • the inner space can be efficiently used and the size of the ball member can be increased, it is possible to prevent the ball member from being struck and released when a large impact is generated from the outside such as a drop.
  • the camera module for a portable terminal according to the present invention is not limited to the above-described embodiments and can be variously modified within the scope of the technical idea of the present invention.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Lens Barrels (AREA)
  • Studio Devices (AREA)

Abstract

The present invention relates to a mobile terminal camera module and, more specifically, to a mobile terminal camera module having a ball guide structure in order to adjust the focus of a camera. The mobile terminal camera module of the present invention comprises: a base having an accommodating space formed therein; a carrier inserted into the accommodating space so as to move in parallel direction to an optical axis of a lens; a coil and a magnet for generating driving power so as to enable the carrier to move; a first yoke mounted on the base or the carrier such that attraction is generated between the first yoke and the magnet; and a first ball guide part and a second ball guide part, each comprising a plurality of ball members for guiding movement of the carrier between the base and the carrier, wherein the attraction generated between the magnet and the first yoke generates rotational force on the carrier around the first ball guide part, and the second ball guide part supports the carrier against the rotational force.

Description

휴대단말기용 카메라 모듈Camera module for portable terminal

본 발명은 휴대단말기용 카메라 모듈에 관한 것으로서, 보다 상세하게는 카메라의 초점을 조절하기 위하여 볼(ball) 가이드 구조를 갖는 휴대단말기용 카메라 모듈에 관한 것이다.The present invention relates to a camera module for a portable terminal, and more particularly, to a camera module for a portable terminal having a ball guide structure for adjusting a focus of the camera.

일반적으로 카메라 모듈은 소형으로 제작되어 스마트폰 등의 휴대단말기나 IT기기 등에 적용되고 있다.Generally, a camera module is manufactured in a small size and is applied to a portable terminal such as a smart phone or an IT device.

이러한 카메라 모듈은 CCD, CMOS 등의 이미지센서를 주요 부품으로 하여 제작되고 있으며, 상기 이미지센서를 통하여 사물의 이미지를 집광시켜 휴대단말기와 같은 기기내의 메모리상에 데이터로 저장되고, 저장된 데이터는 기기내의 디스플레이 매체를 통해 영상으로 출력된다.Such a camera module is manufactured by using an image sensor such as a CCD or a CMOS as a main component. The camera module condenses an image of an object through the image sensor and is stored as data on a memory in a device such as a portable terminal. And outputted as an image through a display medium.

그리고 최근에는 휴대단말기 등과 같은 소형 전자장치 등에 자동초점조절이나 줌 기능 등을 수행할 수 있는 고사향 카메라 모듈이 장착되고 있다.In recent years, a high-resolution camera module capable of performing automatic focus adjustment, zooming, and the like is mounted on a small electronic device such as a portable terminal.

카메라 모듈에 있어서 자동초점조절이나 줌 기능은 하나 또는 그 이상의 렌즈를 포함하는 렌즈배럴을 광축을 따라 소정 거리 이동시키면서 이루어진다.In the camera module, the auto-focusing or zooming function is performed while moving the lens barrel including one or more lenses along the optical axis by a predetermined distance.

이와 같이 렌즈배럴을 이동시킬 때 하우징과 렌즈배럴은 판스프링이나 탄성와이어 등의 탄성수단에 의해 서로 연결되며, 상기 렌즈배럴은 상기 탄성수단에 의해 지지된다.When the lens barrel is moved as described above, the housing and the lens barrel are connected to each other by an elastic means such as a leaf spring or an elastic wire, and the lens barrel is supported by the elastic means.

그러나 카메라 모듈이 소형화 및 고화소화 됨에 따라 보다 적은 전류 입력으로 길어진 구동거리를 구현할 필요가 있고, 탄성수단의 강도는 점점 작아지는 방향으로 설계되도록 요구되고 있다.However, as the camera module is miniaturized and increased in size, it is required to realize a longer driving distance with a smaller current input, and the strength of the elastic means is required to be designed in a decreasing direction.

이와 같이 탄성수단의 강도가 약해지는 경우 렌즈배럴의 처짐과 광축 어긋남 등과 같은 치명적인 문제가 발생하게 된다.When the strength of the elastic means is weakened as described above, a fatal problem such as deflection of the lens barrel and shift of the optical axis occurs.

이러한 문제점을 해결하기 위하여 등록특허공보 제10-0961127호에는 카메라 모듈이 개시되어 있다. 도 1은 종래의 카메라 모듈의 구조를 개략적으로 나타낸 도면이다.In order to solve such a problem, a camera module is disclosed in Patent Document 10-0961127. 1 is a view schematically showing the structure of a conventional camera module.

종래의 카메라 모듈은 하우징, 상기 하우징 내에 고정되어 구비되는 고정유닛, 상기 하우징 내에 구비되며 적어도 하나의 렌즈가 수용되는 렌즈배럴, 상기 고정유닛에 대해 소정의 자기력에 의해 지지되어 이동하도록 구비되어 상기 렌즈배럴을 광축을 따라 이동시키는 이동유닛을 포함하여 이루어진다.The conventional camera module includes a housing, a fixed unit fixed in the housing, a lens barrel accommodated in the housing and accommodating at least one lens, a lens barrel supported to the fixed unit by a predetermined magnetic force, And a moving unit for moving the barrel along the optical axis.

그러나 종래의 카메라 모듈은 마그네트 부재(33), 코일부재(24) 및 볼 부재(35)가 렌즈배럴(31)의 어느 일측에 편중되어 있기 때문에 렌즈배럴이 광축과 나란히 이동할 때 반대편 측면으로 처점이 발생할 우려가 있기 때문에 렌즈배럴의 틸팅에 취약한 구조이다.However, in the conventional camera module, since the magnet member 33, the coil member 24, and the ball member 35 are disposed on either side of the lens barrel 31, when the lens barrel moves side by side with the optical axis, It is vulnerable to tilting of the lens barrel.

또한, 종래의 카메라 모듈은 어느 일측에 두 줄의 볼 부재가 배치되기 때문에 두 줄의 볼 부재 사이에 장착할 수 있는 마그네트 부재(33)의 크기에 제약이 있다. 이에 따라 렌즈배럴의 안정적인 이동을 위하여 볼 부재의 크기를 증가시키기 어렵고, 마그네트 부재를 장착할 공간이 좁기 때문에 마그네트 부재의 크기의 제약으로 자력효율이 떨어진다.In addition, since the conventional camera module has two rows of ball members disposed on either side, the size of the magnet member 33 that can be mounted between the two rows of ball members is limited. Accordingly, it is difficult to increase the size of the ball member for stable movement of the lens barrel, and since the space for mounting the magnet member is narrow, the magnetic force efficiency is lowered due to the restriction of the size of the magnet member.

(선행기술문헌)(Prior art document)

(특허문헌 1) 대한민국 등록특허공보 제10-0961127호(2010.06.07.)(Patent Document 1) Korean Patent Registration No. 10-0961127 (Jun. 2010)

본 발명은 전술한 문제점을 해결하기 위한 것으로서, 내부 공간을 효율적으로 이용할 수 있고, 렌즈의 위치를 이동시켜 카메라의 초점을 조절하기 위한 구동력을 상승시킬 수 있으며, 안정적으로 렌즈의 구동이 이루어질 수 있는 휴대단말기용 카메라 모듈을 제공하는데 그 목적이 있다.SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a zoom lens capable of effectively using an internal space, moving a lens position to raise a driving force for adjusting a focus of a camera, And a camera module for a portable terminal.

상기 목적을 달성하기 위하여 본 발명의 휴대단말기용 카메라 모듈은, 내부에 수용공간이 형성되는 베이스; 상기 수용공간에 삽입되어 렌즈의 광축과 나란한 방향으로 이동하는 캐리어; 상기 캐리어가 이동할 수 있도록 구동력을 발생시키는 코일과 마그네트; 상기 베이스 또는 캐리어에 장착되어 상기 마그네트와의 사이에 인력이 발생하는 제1 요크; 상기 베이스와 캐리어 사이에서 상기 캐리어의 이동을 안내하는 복수의 볼부재로 이루어지는 제1 볼안내부 및 제2 볼안내부를 포함하며, 상기 마그네트와 제1 요크 사이에 발생하는 인력은 상기 제1 볼안내부를 중심축으로 상기 캐리어에 회전력을 발생시키고, 상기 제2 볼안내부는 상기 회전력에 대항하여 상기 캐리어를 지지한다.According to an aspect of the present invention, there is provided a camera module for a portable terminal comprising: a base having a receiving space therein; A carrier inserted in the accommodation space and moving in a direction parallel to the optical axis of the lens; A coil and a magnet for generating a driving force to move the carrier; A first yoke mounted on the base or the carrier and generating attraction between the magnet and the base; And a first ball guide portion and a second ball guide portion formed of a plurality of ball members for guiding the movement of the carrier between the base and the carrier, and attraction force generated between the magnet and the first yoke is transmitted to the first ball guide And the second ball guide portion supports the carrier against the rotational force.

그리고 상기 캐리어의 일면에는 상기 마그네트가 장착되는 장착부와 상기 제1 볼안내부가 배치되는 제1 안내홈이 형성되고, 상기 제1 안내홈은 상기 장착부의 양측 중 어느 일측에 형성된다.The first guide groove is formed on one side of the carrier, and the first guide groove is formed on either side of the mounting portion.

본 발명은 볼 가이드 구조를 갖는 휴대단말기용 카메라 모듈로서 광축과 나란한 방향으로 이동하는 캐리어에 제1 볼안내부를 중심축으로 하는 회전력을 발생시킴으로써 캐리어의 처짐 및 틸팅을 방지하고 안정적인 상하 구동이 이루어지도록 할 수 있다.The present invention relates to a camera module for a portable terminal having a ball guide structure, in which a carrier moving in a direction parallel to an optical axis generates a rotational force about a first ball guide portion as a central axis, thereby preventing sagging and tilting of the carrier, can do.

또한, 본 발명의 휴대단말기용 카메라 모듈은 마그네트의 양측 중 어느 일측에만 볼안내부가 배치되도록 하여 나머지 공간을 마그네트의 장착공간으로 확장함으로써 마그네트의 크기를 증가시킬 수 있고 캐리어를 이동시키기 위한 구동력을 증가시킬 수 있다.In addition, the camera module for a portable terminal of the present invention can increase the size of the magnet and increase the driving force for moving the carrier by extending the remaining space to the mounting space of the magnet by arranging the ball guide portion on either side of the magnet. .

또한, 본 발명의 휴대다말기용 카메라 모듈은 제2 볼안내부의 위치가 변경된 구조를 적용함으로써 내부 공간을 효율적으로 이용할 수 있고, 이에 따라 볼부재의 크기를 증가시킬 수 있으므로 낙하 등 외부로부터 큰 충격이 발생할 때 볼부재의 찍힘 및 이탈 현상을 방지할 수 있다.In addition, since the camera module for a portable tamer according to the present invention can utilize the internal space efficiently by applying the structure in which the position of the second ball guide portion is changed, the size of the ball member can be increased, It is possible to prevent the ball member from being picked up and released when it occurs.

도 1은 종래의 카메라 모듈의 구조를 개략적으로 나타낸 도면.BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing a structure of a conventional camera module. Fig.

도 2는 본 발명의 실시예에 따른 휴대단말기용 카메라 모듈의 사시도.2 is a perspective view of a camera module for a portable terminal according to an embodiment of the present invention;

도 3은 본 발명의 실시예에 따른 휴대단말기용 카메라 모듈의 분해사시도.3 is an exploded perspective view of a camera module for a portable terminal according to an embodiment of the present invention.

도 4는 본 발명의 실시예에 따른 휴대단말기용 카메라 모듈의 단면도.4 is a sectional view of a camera module for a portable terminal according to an embodiment of the present invention.

본 발명은 카메라의 초점을 조절하기 위하여 볼(ball) 가이드 구조를 갖는 휴대단말기용 카메라 모듈에 관한 것으로, 광축과 나란한 방향으로 이동하는 캐리어에 제1 볼안내부를 중심축으로 하는 회전력을 발생시킴으로써 캐리어의 처짐 및 틸팅을 방지하고 안정적인 상하 구동이 이루어지도록 할 수 있다.The present invention relates to a camera module for a portable terminal having a ball guide structure for adjusting a focus of a camera, and more particularly, to a camera module for generating a rotational force with a first ball guide portion as a central axis in a carrier moving in a direction parallel to an optical axis, It is possible to prevent sagging and tilting of the motor and ensure stable vertical driving.

이하, 첨부된 도면을 참조하여 본 발명을 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

본 발명의 실시예에 따른 휴대단말기용 카메라 모듈은 도 2 내지 도 4에 도시된 바와 같이, 베이스(100), 캐리어(200), 제1 볼안내부(310), 제2 볼안내부(320) 및 베이스(100)의 상부를 덮는 커버(미도시)로 구분할 수 있다.2 to 4, a camera module for a portable terminal according to an exemplary embodiment of the present invention includes a base 100, a carrier 200, a first ball guide 310, a second ball guide 320 And a cover (not shown) covering the upper portion of the base 100.

도 2 및 도 3에 도시된 바와 같이, 베이스(100)는 대략 육면체 형상으로 형성되고, 내부에 캐리어(200)가 삽입되는 수용공간(101)이 형성된다. 그리고 베이스(100)의 일면에는 관통구(102)가 형성되고, 회로기판(110)이 관통구(102)를 덮도록 베이스(100)의 외측면에 장착된다.2 and 3, the base 100 is formed in a substantially hexahedral shape, and a receiving space 101 into which the carrier 200 is inserted is formed. A through hole 102 is formed on one surface of the base 100 and the circuit board 110 is mounted on the outer surface of the base 100 so as to cover the through hole 102.

이러한 회로기판(110)에는 코일(120), 센서(130) 및 제1 요크(140)가 장착된다. 코일(120)은 수용공간(101)을 향하는 회로기판(110)의 내측면에 장착되어 관통구(102)에 배치된다. 또한, 회로기판(110)의 내측면에는 캐리어(200)의 변위를 감지하는 센서(130)가 장착된다. 그리고 제1 요크(140)는 회로기판(110)의 외측면에 장착된다. 즉 코일(120)과 제1 요크(140)는 회로기판(110)을 중심으로 회로기판(110)의 양면의 동일한 위치에 장착된다.A coil 120, a sensor 130, and a first yoke 140 are mounted on the circuit board 110. The coil 120 is mounted on the inner surface of the circuit board 110 facing the receiving space 101 and is disposed in the through hole 102. A sensor 130 for sensing the displacement of the carrier 200 is mounted on the inner surface of the circuit board 110. The first yoke 140 is mounted on the outer surface of the circuit board 110. That is, the coil 120 and the first yoke 140 are mounted at the same positions on both sides of the circuit board 110 with the circuit board 110 as the center.

그리고 관통구(102)가 형성되어 있는 베이스(100)의 일면에는 수용공간(101)을 향하는 내측에 수직홈(103)이 형성된다. 이러한 수직홈(103)은 도 3 및 도 4에 도시된 바와 같이 베이스(100)의 전방 우측 모서리 가까이에 형성된다. 또한, 베이스(100)에의 내측면에는 수직돌기(104)가 돌출형성된다. 수직돌기(104)는 베이스(100)의 후방 좌측 모서리 가까이에 형성된다.A vertical groove 103 is formed on one side of the base 100 on which the through hole 102 is formed, on the inner side facing the accommodation space 101. These vertical grooves 103 are formed near the front right edge of the base 100 as shown in Figs. Vertical protrusions 104 are protruded from the inner surface of the base 100. Vertical protrusions 104 are formed near the rear left edge of base 100.

캐리어(200)에는 하나 이상의 렌즈(미도시)가 장착된다. 그리고 캐리어(200)는 수용공간(101)에 삽입되어 렌즈의 광축과 나란한 방향으로 이동할 수 있다. 이러한 캐리어(200)의 일면에는 장착부(201)가 형성된다.The carrier 200 is equipped with one or more lenses (not shown). The carrier 200 is inserted into the accommodation space 101 and can move in a direction parallel to the optical axis of the lens. A mounting portion 201 is formed on one side of the carrier 200.

장착부(201)에는 제2 요크(210) 및 마그네트(220)가 장착된다. 즉 장착부(201)에 제2 요크(210)가 장착되고, 제2 요크(210)에 마그네트(220)가 장착된다. 마그네트(220)는 두 개로 분리되어 있다. 이러한 마그네트(220)는 베이스(100)에 장착되어 있는 코일(120)과 마주하여 코일(120) 주위에 자기장을 형성하고, 마그네트(220)와 제1 요크(140) 사이에 인력이 발생한다.A second yoke 210 and a magnet 220 are mounted on the mounting portion 201. That is, the second yoke 210 is mounted on the mounting portion 201 and the magnet 220 is mounted on the second yoke 210. The magnet 220 is divided into two parts. The magnet 220 forms a magnetic field around the coil 120 facing the coil 120 mounted on the base 100 and generates attraction between the magnet 220 and the first yoke 140.

그리고 캐리어(200)의 일면에는 제1 안내홈(202)이 형성된다. 도 4에 도시된 바와 같이 제1 안내홈(202)은 수직홈(103)과 마주하도록 장착부(201)의 우측에 형성된다. 또한, 캐리어(200)에는 수직돌기(104)와 마주하는 위치에 제2 안내홈(203)이 형성된다.A first guide groove 202 is formed on one side of the carrier 200. As shown in FIG. 4, the first guide groove 202 is formed on the right side of the mounting portion 201 so as to face the vertical groove 103. Further, the carrier 200 is provided with a second guide groove 203 at a position facing the vertical projection 104.

제1 볼안내부(310)는 제1 안내홈(202)과 수직홈(103) 사이에 배치된다. 구체적으로 제1 볼안내부(310)는 세 개의 볼부재로 이루어지며, 두 개의 볼부재 사이에 위치하는 하나의 볼부재는 다른 두 개의 볼부재보다 지름이 작다.The first ball guide 310 is disposed between the first guide groove 202 and the vertical groove 103. Specifically, the first ball guide 310 is formed of three ball members, and one ball member located between the two ball members is smaller in diameter than the other two ball members.

재2 볼안내부는 제2 안내홈(203)과 수직돌기(104) 사이에 배치된다. 제2 볼안내부(320) 역시 세 개의 볼부재로 이루어지며 제1 볼안내부(310)와 동일하다.The second ball guide is disposed between the second guide groove (203) and the vertical projection (104). The second ball guide 320 is also formed of three ball members and is the same as the first ball guide 310.

다음은 도 4를 참조하여 본 발명의 실시예에 따른 캐리어(200) 지지구조에 대하여 설명한다.Next, a structure for supporting the carrier 200 according to an embodiment of the present invention will be described with reference to FIG.

먼저, 마그네트(220)와 제1 요크(140) 사이에 발생하는 인력(N)에 의해 캐리어(200)가 제1 요크(140)가 위치한 전방으로 당겨진다. 이때, 마그네트(220)의 일측(도면에서 우측)에 있는 제1 볼안내부(310)에 의해 제1 볼안내부(310)를 중심축으로 캐리어(200)에 회전력(T)이 발생한다. 그리고 제2 안내홈(203)에 삽입되어 수직돌기(104)와 접촉하고 있는 제2 볼안내부(320)가 회전력(T)에 대항하여 캐리어(200)를 지지한다. 이와 같이 작용하는 회전력을 이용하여 캐리어(200)는 제1 볼안내부(310)와 제2 볼안내부(320)에 의해 수용공간(101)에서 지지되고, 코일(120)에 전류가 흐르면 발생하는 전자기력이 구동력이 되어 캐리어(200)가 광축과 나란한 방향으로 이동하게 된다. 이때, 베이스(100)와 캐리어(200) 사이에 배치되어 캐리어(200)를 지지하는 제1 볼안내부(310)와 제2 볼안내부(320)에 의해 캐리어(200)의 이동이 안내되어 원활한 구동이 이루어진다. 그리고 센서(130)가 마그네트(220)에 의해 발생하는 자기장의 변화를 감지하여 캐리어(200)의 구동에 대한 피드백 정보를 제공한다.The carrier 200 is pulled toward the front where the first yoke 140 is located by the attraction force N generated between the magnet 220 and the first yoke 140. At this time, a rotational force T is generated in the carrier 200 about the first ball guide 310 as a center axis by the first ball guide 310 at one side (right side in the drawing) of the magnet 220. The second ball guide 320 inserted into the second guide groove 203 and in contact with the vertical protrusion 104 supports the carrier 200 against the rotational force T. [ The carrier 200 is supported by the first ball guide portion 310 and the second ball guide portion 320 in the receiving space 101 by using the rotational force acting in this way. When a current flows through the coil 120, The carrier 200 moves in a direction parallel to the optical axis. At this time, the movement of the carrier 200 is guided by the first ball guide 310 and the second ball guide 320 disposed between the base 100 and the carrier 200 to support the carrier 200 Smooth drive is achieved. The sensor 130 senses a change in a magnetic field generated by the magnet 220 and provides feedback information on the driving of the carrier 200.

상술한 지지구조를 갖는 본 발명의 휴대단말기용 카메라 모듈은 제2 볼안내부(320)가 제1 볼안내부(310) 및 구동력을 발생시키는 구동원(코일(120), 마그네트(220))과 함께 캐리어(200)의 어느 한쪽에 편중되어 있지 않고 이격되어 있기 때문에, 캐리어(200)의 처짐 및 틸팅을 최소화하고 안정적인 상하 구동이 이루어지도록 할 수 있다.In the camera module for a portable terminal of the present invention having the above-described supporting structure, the second ball guide portion 320 includes a first ball guide portion 310 and driving sources (coil 120 and magnet 220) It is possible to minimize the deflection and tilting of the carrier 200 and to perform the stable up-and-down driving because the carrier 200 is not concentrated on either side of the carrier 200 but is spaced apart.

그리고 마그네트(220)의 장착공간을 확장하여 마그네트(220)의 크기를 증가시킬 수 있고 캐리어(200)를 이동시키기 위한 구동력을 증가시킬 수 있다.Also, the magnet 220 can be increased in size by increasing the mounting space of the magnet 220, and the driving force for moving the carrier 200 can be increased.

또한, 내부 공간을 효율적으로 이용할 수 있고, 이에 따라 볼부재의 크기를 증가시킬 수 있으므로 낙하 등 외부로부터 큰 충격이 발생할 때 볼부재의 찍힘 및 이탈 현상을 방지할 수 있다.Further, since the inner space can be efficiently used and the size of the ball member can be increased, it is possible to prevent the ball member from being struck and released when a large impact is generated from the outside such as a drop.

본 발명에 따른 휴대단말기용 카메라 모듈은 전술한 실시예에 국한되지 않고 본 발명의 기술사상이 허용되는 범위 내에서 다양하게 변형하여 실시할 수 있다.The camera module for a portable terminal according to the present invention is not limited to the above-described embodiments and can be variously modified within the scope of the technical idea of the present invention.

Claims (2)

내부에 수용공간이 형성되는 베이스;A base having a receiving space formed therein; 상기 수용공간에 삽입되어 렌즈의 광축과 나란한 방향으로 이동하는 캐리어;A carrier inserted in the accommodation space and moving in a direction parallel to the optical axis of the lens; 상기 캐리어가 이동할 수 있도록 구동력을 발생시키는 코일과 마그네트;A coil and a magnet for generating a driving force to move the carrier; 상기 베이스 또는 캐리어에 장착되어 상기 마그네트와의 사이에 인력이 발생하는 제1 요크;A first yoke mounted on the base or the carrier and generating attraction between the magnet and the base; 상기 베이스와 캐리어 사이에서 상기 캐리어의 이동을 안내하는 복수의 볼부재로 이루어지는 제1 볼안내부 및 제2 볼안내부를 포함하며,And a first ball guide portion and a second ball guide portion formed of a plurality of ball members for guiding movement of the carrier between the base and the carrier, 상기 마그네트와 제1 요크 사이에 발생하는 인력은 상기 제1 볼안내부를 중심축으로 상기 캐리어에 회전력을 발생시키고,Wherein attraction force generated between the magnet and the first yoke generates a rotational force on the carrier with the first ball guide portion as a center axis, 상기 제2 볼안내부는 상기 회전력에 대항하여 상기 캐리어를 지지하는 것을 특징으로 하는 휴대단말기용 카메라 모듈.And the second ball guide unit supports the carrier against the rotational force. 청구항 1에 있어서,The method according to claim 1, 상기 캐리어의 일면에는 상기 마그네트가 장착되는 장착부와 상기 제1 볼안내부가 배치되는 제1 안내홈이 형성되고,Wherein a mounting portion on which the magnet is mounted and a first guide groove in which the first ball guide portion is disposed are formed on one side of the carrier, 상기 제1 안내홈은 상기 장착부의 양측 중 어느 일측에 형성되는 것을 특징으로 하는 휴대단말기용 카멜라 모듈.Wherein the first guide groove is formed on one side of the mounting portion.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110794547A (en) * 2019-08-31 2020-02-14 东莞睿恩科技有限公司 Lens driving device of ball type voice coil motor, camera device and electronic apparatus
WO2022017159A1 (en) * 2020-07-21 2022-01-27 宁波舜宇光电信息有限公司 Gimbal driving apparatus for camera module, camera module, and terminal device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11570345B2 (en) 2020-09-25 2023-01-31 Samsung Electro-Mechanics Co., Ltd. Camera module
CN115473974B (en) * 2021-06-10 2024-08-09 宁波舜宇光电信息有限公司 Photosensitive chip driving device and camera module

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150085426A (en) * 2014-01-15 2015-07-23 자화전자(주) Camera lens module
KR101555904B1 (en) * 2015-02-17 2015-09-30 (주) 엠디펄스 Camera moudule
KR20150124036A (en) * 2014-04-25 2015-11-05 주식회사 하이소닉 Apparatus for moving lens in camera module for portable device
KR101640565B1 (en) * 2015-08-12 2016-07-18 주식회사 엠씨넥스 Camera module with optical image stabilization function
KR20170056387A (en) * 2015-11-13 2017-05-23 삼성전기주식회사 Lens driving apparatus and camera module including the same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150085426A (en) * 2014-01-15 2015-07-23 자화전자(주) Camera lens module
KR20150124036A (en) * 2014-04-25 2015-11-05 주식회사 하이소닉 Apparatus for moving lens in camera module for portable device
KR101555904B1 (en) * 2015-02-17 2015-09-30 (주) 엠디펄스 Camera moudule
KR101640565B1 (en) * 2015-08-12 2016-07-18 주식회사 엠씨넥스 Camera module with optical image stabilization function
KR20170056387A (en) * 2015-11-13 2017-05-23 삼성전기주식회사 Lens driving apparatus and camera module including the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110794547A (en) * 2019-08-31 2020-02-14 东莞睿恩科技有限公司 Lens driving device of ball type voice coil motor, camera device and electronic apparatus
CN110794547B (en) * 2019-08-31 2022-06-24 东莞睿恩科技有限公司 Lens driving device of ball type voice coil motor, camera device and electronic apparatus
WO2022017159A1 (en) * 2020-07-21 2022-01-27 宁波舜宇光电信息有限公司 Gimbal driving apparatus for camera module, camera module, and terminal device

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