WO2018012733A1 - Portable terminal camera module - Google Patents

Portable terminal camera module Download PDF

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Publication number
WO2018012733A1
WO2018012733A1 PCT/KR2017/005517 KR2017005517W WO2018012733A1 WO 2018012733 A1 WO2018012733 A1 WO 2018012733A1 KR 2017005517 W KR2017005517 W KR 2017005517W WO 2018012733 A1 WO2018012733 A1 WO 2018012733A1
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WO
WIPO (PCT)
Prior art keywords
guide
moving
guide roller
lens
rail
Prior art date
Application number
PCT/KR2017/005517
Other languages
French (fr)
Korean (ko)
Inventor
서종식
김용규
박상욱
Original Assignee
(주)알비케이이엠디
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020160089258A external-priority patent/KR101889835B1/en
Priority claimed from KR1020160089249A external-priority patent/KR101779817B1/en
Application filed by (주)알비케이이엠디 filed Critical (주)알비케이이엠디
Publication of WO2018012733A1 publication Critical patent/WO2018012733A1/en

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • 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
    • 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
    • G02B7/105—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 with movable lens means specially adapted for focusing at close distances
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B3/00—Focusing arrangements of general interest for cameras, projectors or printers
    • G03B3/10—Power-operated focusing
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules

Definitions

  • the present invention relates to a camera module for a portable terminal having a focus adjustment function, and to a camera module for a portable terminal capable of minimizing lens shake and distortion of the lens optical axis when adjusting the focus of the camera.
  • Such a camera module for a mobile terminal is composed of a lens system, a lens driver for providing a driving force to adjust the focus by moving the lens system in the optical axis direction, and an image sensor for capturing light incident through the lens system and converting the light into an image signal. It is common.
  • the camera module applied to the portable terminal is provided with an auto focusing function, a zooming function, a camera shake correction function, and the like.
  • Korean Unexamined Patent Publication No. 10-2015-0083053 discloses a high performance and miniaturized camera module.
  • 1 is a cutaway perspective view of a conventional camera module cut diagonally
  • Figure 2 is a cross-sectional view of a conventional camera module.
  • the conventional camera module includes a lens barrel 13, a lens disposed in the lens barrel 13, and a lens barrel carrier 14 having the lens barrel 13.
  • the lens barrel carrier 14 of the conventional camera module is guided along the optical axis by a pair of guide devices, and the lens barrel 13 is moved along the optical axis by the autofocus driver to adjust the lens focus.
  • the pair of guide devices includes a plurality of ball bearings b1.
  • the lens barrel carrier 14 of the conventional camera module is guided by the ball bearing b1, so that when the lens barrel 13 and the lens barrel carrier 14 move along the optical axis by the autofocus driver, the ball bearing ( Due to the shape characteristic of b1), since the rotational direction is not limited to a constant and the ball bearing b1 can flow in the vertical direction of the optical axis, there is a possibility that the optical axis is distorted to deviate from the center of the image sensor. For this reason, the conventional camera module has a problem that it is difficult to implement a high-performance and high-performance camera.
  • the present invention is to solve the above problems, to provide a camera module for a mobile terminal that can be precisely driven and improve the focusing performance by minimizing the lens shake and the lens optical axis when adjusting the focus of the camera.
  • the purpose is.
  • the camera module for a mobile terminal of the present invention comprises: a fixing part in which a receiving space is formed; A moving part mounted on the lens and moving along the optical axis direction of the lens in the accommodation space; A guide roller disposed between the fixed part and the moving part to guide the movement of the moving part; And a driving unit generating power for moving the moving unit, wherein the guide roller is formed in a shape in which the diameter gradually decreases from both ends to the center, and a guide groove is formed around the center.
  • the fixing part is provided with a fixed rail part parallel to the optical axis direction of the lens
  • the moving part is formed with a moving rail part parallel to the optical axis direction of the lens
  • the fixing rail part and the moving rail part are mutually centered around the guide roller. Positioned to face each other is inserted into the guide groove.
  • the guide roller may include a first guide roller and a second guide roller disposed up and down along the optical axis direction of the lens, and a ball guide is disposed between the first guide roller and the second guide roller.
  • the ball guide is inserted into the guide groove formed in the first guide roller and the lower part is inserted into the guide groove formed in the second guide roller and rotates in the opposite direction to the rotational direction of the first guide roller and the second guide roller.
  • the ball guide has a radius longer than a depth of the guide groove and a diameter shorter than a distance between the fixed rail part and the moving rail part.
  • the guide roller further includes a third guide roller, wherein the fixed rail parts are formed on both sides of the driving part, respectively, and the moving rail parts are formed on both sides of the driving part, respectively, and the first guide.
  • the roller and the second guide roller are positioned between the fixed rail part and the moving rail part formed on one side of the driving part, and the third guide roller is located between the fixed rail part and the moving rail part formed on the other side of the driving part.
  • the camera module for a mobile terminal of the present invention may include a ball guide which is disposed between the fixed part and the moving part to guide the movement of the moving part, wherein the fixed rail part and the moving rail part are mainly driven by the driving part. It is formed on one side, the ball guide is disposed on the other side around the drive unit, at least one of the fixed portion and the moving portion is formed with a rail groove parallel to the optical axis direction of the lens is inserted into the ball guide.
  • the ball guide may include a first ball guide, a second ball guide, and a third ball guide disposed up and down along the optical axis direction of the lens, and the third ball guide may include the first ball guide and the second ball guide. Located between the diameter of the third ball guide is shorter than the diameter of the first ball guide and the second ball guide.
  • the camera module for a mobile terminal of the present invention can precisely drive and improve focusing performance by minimizing lens shake and distortion of the lens optical axis when adjusting the focus of the camera.
  • FIG. 1 is a perspective view showing a cutting by cutting a conventional camera module in a diagonal direction.
  • FIG. 2 is a cross-sectional view of a conventional camera module.
  • FIG 3 is a perspective view of a camera module for a portable terminal according to a first embodiment of the present invention.
  • Figure 4 is an exploded perspective view of a camera module for a portable terminal according to a first embodiment of the present invention.
  • FIG 5 is an exploded perspective view of another direction of the camera module for a mobile terminal according to the first embodiment of the present invention.
  • FIG. 6 is a plan view of a camera module for a mobile terminal according to a first embodiment of the present invention.
  • FIG. 7 is a perspective view of a guide roller according to the first embodiment of the present invention.
  • FIG. 8 is a cross-sectional view taken along line A-A of FIG.
  • FIG. 9 is a perspective view of a camera module for a mobile terminal according to a second embodiment of the present invention.
  • FIG. 10 is an exploded perspective view of a camera module for a portable terminal according to a second embodiment of the present invention.
  • FIG. 11 is an exploded perspective view of another direction of a camera module for a portable terminal according to a second embodiment of the present invention.
  • FIG. 12 is a plan view of a camera module for a mobile terminal according to a second embodiment of the present invention.
  • FIG. 13 is a perspective view of a guide roller according to a second embodiment of the present invention.
  • FIG. 14 is a cross-sectional view of a camera module for a portable terminal according to a second embodiment of the present invention.
  • 15 is a cross-sectional view of a camera module for a mobile terminal according to another embodiment of the present invention.
  • the present invention relates to a camera module for a mobile terminal having a focus adjustment function, and to precisely drive and focus by minimizing lens shake and distortion of the lens optical axis when adjusting the focus of the camera by adjusting the distance between the image sensor and the lens. It can improve the regulation performance.
  • the camera module for a mobile terminal includes a fixing part 100, a moving part 200, a guide roller 300, and a driving part 400. .
  • the fixing part 100 is mounted to the portable terminal, and as shown in FIGS. 3 and 4, an accommodation space 110 into which the moving part 200 is inserted is formed.
  • the yoke 120 is mounted at the front of the fixing unit 100, and the coil unit 410, which is one of the components of the driving unit 400, is mounted on the inner surface of the yoke 120 facing the receiving space 110.
  • fixed rail parts 130a and 130b are formed at both sides of the coil part 410.
  • the fixing rail parts 130a and 130b are formed in parallel with the optical axis direction O of the lens (not shown) inside the fixing part 100 in which the accommodation space 110 is formed.
  • a cover (not shown) is mounted on the fixing part 100 to cover the upper part of the fixing part 100.
  • the moving unit 200 moves along the optical axis direction O of the lens in the accommodation space 110 to adjust the distance between the image sensor (not shown) and the lens (not shown).
  • the magnet 200 is mounted to the moving part 200 in front of the coil part 410 to form a magnetic field around the coil part 410.
  • the magnet part 420 is a component constituting the driving part 400 together with the coil part 410.
  • the moving parts 200 are provided with moving rail parts 210a and 210b parallel to the optical axis direction O of the lens on both sides of the magnet part 420.
  • the fixed rail parts 130a and 130b and the moving rail parts 210a and 210b are positioned to face each other with respect to the guide roller 300.
  • the fixed rail part and the moving rail part which are formed to face each other on one side of the driving part 400 are referred to as the first fixed rail part 130a and the first moving rail part 210a.
  • the fixed rail part and the moving rail part which are formed to face each other on the other side of the driving part 400 are referred to as the second fixed rail part 130b and the second moving rail part 210b.
  • the guide roller 300 is disposed between the fixing part 100 and the moving part 200 to guide the movement of the moving part 200. Specifically, as illustrated in FIG. 7, the guide roller 300 is formed in a shape in which the diameter gradually decreases from both ends to the center, and the guide groove 310 is formed around the center.
  • the guide roller 300 is composed of three guide rollers 300 of the same shape. Each guide roller 300 is divided into a first guide roller 300a, a second guide roller 300b and a third guide roller 300c for convenience of description.
  • the first guide roller 300a and the second guide roller 300b have an optical axis direction O of the lens between the first fixed rail part 130a and the first moving rail part 210a.
  • the upper and lower sides are disposed along the ball guide 320 between the first guide roller 300a and the second guide roller 300b.
  • the first fixed rail part 130a and the first moving rail part 210a which are disposed to face each other around the first guide roller 300a and the second guide roller 300b are opposite to each other. It is inserted into the guide grooves 310a and 310b respectively formed in the 300a) and the second guide roller 300b.
  • the ball guide 320 is inserted into the guide groove 310a formed in the upper portion of the first guide roller 300a and the lower portion is inserted into the guide groove 310b formed in the second guide roller 300b. Rotates in a direction opposite to the rotation direction of the first guide roller 300a and the second guide roller 300b.
  • the spherical ball guide 320 has a radius longer than the depth of the guide groove 310 and the diameter is shorter than the distance between the first fixed rail portion 130a and the first moving rail portion 210a.
  • the third guide roller 300c is positioned between the second fixed rail part 120b and the second moving rail part 210b.
  • the second fixed rail 130b and the second movable rail 210b disposed to face each other with respect to the third guide roller 300c are guided on the third guide roller 300c in opposite directions. It is inserted into the groove 310c.
  • the first guide roller 300a and the second guide roller 300b are the same on both sides.
  • the ball guide 320 may be applied or only the third guide roller 300c may be applied to both sides.
  • the single or plural guide rollers 300 may be arranged in various structures and applied.
  • the driver 400 generates power for moving the moving part 200.
  • the driving unit 400 includes a coil unit 410 and a magnet unit 420 forming a magnetic field around the coil unit 410. Accordingly, when a current is formed in the coil unit 410, a driving force for moving the moving unit 200 is generated.
  • the fixed part 100, the guide roller 300, and the moving part 200 are maintained in close contact with each other by an attraction force generated between the magnet part 420 and the yoke 120.
  • the coil part 410 is mounted on the fixing part 100 and the magnet part 420 is mounted on the moving part 200, but the magnet part 420 is fixed to the fixing part 100 according to various embodiments.
  • Mount the coil unit 410 to the moving unit 200 may be mounted.
  • the moving part 200 is disposed in the accommodation space 110 of the fixing part 100, and the first to third guide rollers 300a, 300b, and 300c between the fixing part 100 and the moving part 200. Is placed. In addition, the moving part 200 presses the first to third guide rollers 300a, 300b, and 300c toward the fixing part 100 by the attraction force generated between the magnet part 420 and the yoke 120, thereby closely contacting each other. Will remain intact.
  • the first fixed rail portion 130a is inserted into the guide grooves 310a and 310b formed in the first guide roller 300a and the second guide roller 300b
  • the first moving rail portion 210a is It is inserted into the guide grooves 310a and 310b formed in the first guide roller 300a and the second guide roller 300b on the opposite side of the first fixed rail portion 130a.
  • the ball guide 320 is disposed between the first guide roller 300a and the second guide roller 300b to separate the first guide roller 300a and the second guide roller 300b in the vertical direction.
  • the upper portion of the ball guide 320 is inserted into the guide groove 310a formed in the first guide roller 300a
  • the lower portion of the ball guide 320 is the second It is inserted into the guide groove 310b formed in the guide roller 300b.
  • the first guide roller 300a and the second guide roller 300b rotate in the same direction when the moving part 200 moves
  • the ball guide 320 has the first guide roller 300a and the second guide roller. It is rotated in the direction opposite to the rotation direction of (300b).
  • the second fixed rail portion 130b and the second moving rail portion 210b may be formed in the guide groove 310c formed in the third guide roller 300c on the opposite side with respect to the third guide roller 300c. Is inserted.
  • the camera module can be precisely driven and the focusing performance can be improved by minimizing lens shake and distortion of the lens optical axis when adjusting the focus of the camera.
  • the camera module for a portable terminal includes a fixing part 1100, a moving part 1200, a guide roller 1300, a ball guide 1400, The driving unit 1500 is formed.
  • the fixing unit 1100 is mounted on the portable terminal, and as shown in FIGS. 9 and 10, an accommodation space 1110 into which the moving unit 1200 is inserted is formed.
  • the yoke 1130 is mounted at the front of the fixing unit 1100, and the coil unit 1510, which is one of the components of the driving unit 1500, is mounted on the inner surface of the yoke 1130 facing the receiving space 1110. .
  • a fixed rail unit 1130 and a first rail groove 1140 are formed at both sides of the coil unit 1510. As shown in FIG. 11, the fixed rail unit 1130 is formed in parallel with the optical axis direction O of the lens (not shown) inside the fixing unit 1100 in which the accommodation space 1110 is formed.
  • first rail groove 1140 is formed in parallel with the optical axis direction O of the lens in the inner side of the fixing part 1100 in which the accommodation space 1110 is formed.
  • a cover (not shown) is mounted on the fixing part 1100 to cover an upper portion of the fixing part 1100.
  • the moving unit 1200 moves along the optical axis direction O of the lens in the accommodation space 1110 and adjusts the distance between the image sensor (not shown) and the lens (not shown).
  • the magnet part 1520 is mounted to the moving part 1200 in front of the coil part 1510 to form a magnetic field around the coil part 1510.
  • the magnet unit 1520 is a component constituting the driving unit 1500 together with the coil unit 1510.
  • the moving part 1200 includes a moving rail part 1210 and a second rail groove 1220 parallel to the optical axis direction O of the lens with respect to the magnet part 1520.
  • the fixed rail unit 1130 and the moving rail unit 1210 are positioned to face each other with respect to the guide roller 1300.
  • the first rail groove 1140 and the second rail groove 1220 are positioned to face each other with respect to the ball guide 1400.
  • the rail groove may be divided into a first rail groove 1140 formed in the fixing part 1100 and a second rail groove 1220 formed in the moving part 1200. Only one of the rail grooves 1140 and the second rail groove 1220 may be formed.
  • the guide roller 1300 is disposed between the fixed part 1100 and the moving part 1200 to guide the movement of the moving part 1200. Specifically, as shown in FIG. 13, the guide roller 1300 is formed in a shape in which the diameter gradually decreases from both ends toward the center, and the guide groove 1310 is formed around the center.
  • the guide roller 1300 is positioned between the fixed rail part 1130 and the moving rail part 1210.
  • the fixed rail unit 1130 and the movable rail unit 1210 disposed to face each other with respect to the guide roller 1300 are inserted into the guide groove 1310 formed in the guide roller 1300 in opposite directions.
  • the guide structure by the guide roller 1300 of the present invention may be disposed between the ball member 1320 between the two guide rollers 1300.
  • the ball guide 1400 may be divided into a first ball guide 1410, a second ball guide 1420, and a third ball guide 1430.
  • the first ball guide 1410 and the second ball guide 1420 are disposed vertically along the optical axis direction O of the lens between the first rail groove 1140 and the second rail groove 1220, and the first ball
  • the third ball guide 1430 is disposed between the guide 1410 and the second ball guide 1420.
  • the first ball guide 1410 is disposed in the first rail groove 1140 and the second rail groove 1220 which are disposed to face each other in opposite directions with respect to the first ball guide 1410 and the second ball guide 1420. And a part of the second ball guide 1420 is inserted.
  • the third ball guide 1430 is disposed between the first ball guide 1410 and the second ball guide 1420 to separate the first ball guide 1410 and the second ball guide 1420, the moving part 1200 ) Rotates in a direction opposite to the rotation direction of the first ball guide 1410 and the second ball guide 1420.
  • the diameter of the third ball guide 1430 is shorter than the diameter of the first ball guide 1410 and the second ball guide 1420.
  • the driving unit 1500 generates power for moving the moving unit 1200.
  • the driving unit 1500 includes a coil unit 1510 and a magnet unit 1520 that forms a magnetic field around the coil unit 1510. Accordingly, when a current is formed in the coil unit 1510, a driving force for moving the moving unit 1200 is generated.
  • the fixed part 1100, the guide roller 1300, the ball guide 1400, and the moving part 1200 are maintained in close contact with each other by the force generated between the magnet part 1520 and the yoke 1130. .
  • the magnet unit 1510 is mounted on the fixing unit 1100 and the magnet unit 1520 is mounted on the moving unit 1200, the magnet unit is mounted on the fixing unit 1100 according to various embodiments of the present disclosure.
  • the coil 1520 may be mounted and the coil unit 1510 may be mounted on the moving unit 1200.
  • the moving part 1200 is disposed in the accommodation space 1110 of the fixing part 1100, and the guide roller 1300 and the ball guide 1400 are disposed between the fixing part 1100 and the moving part 1200. .
  • the moving part 1200 presses the guide roller 1300 and the ball guide 1400 in the direction of the fixing part 1100 by the attraction force generated between the magnet part 1520 and the yoke 1130. maintain.
  • the fixed rail portion 1130 is inserted into the guide groove 1310 formed in the guide roller 1300, and the moving rail portion 1210 is formed in the guide roller 1300 on the opposite side of the fixed rail portion 1130 It is inserted into the guide groove 1310.
  • the first to third ball guides 1410, 1420, and 1430 are disposed between the first rail groove 1140 and the second rail groove 1220.
  • the moving part 1200 moves along the optical axis direction O of the lens while the fixed rail part 1130 and the moving rail part 1210 are inserted into the guide groove 1310 formed in the guide roller 1300.
  • the shaking of the moving unit 1200 may be minimized and the optical axis of the lens may be minimized. That is, the optical axis of the lens is shifted while the moving unit 1200 on which the lens is mounted is shaken or the moving unit 1200 moves, thereby preventing the optical axis of the lens from being shifted from the center of the image sensor of the camera.
  • the camera module can be precisely driven and the focusing performance can be improved by minimizing lens shake and distortion of the lens optical axis when adjusting the focus of the camera.
  • the camera module for a mobile terminal according to the present invention is not limited to the above-described embodiments and can be modified in various ways within the scope of the technical idea of the present invention.
  • the camera module for a mobile terminal of the present invention is installed in a mobile terminal such as a smart phone to perform a camera function, and when the focus of the camera is adjusted by minimizing lens shake and distortion of the lens optical axis, precise driving is possible and focus adjustment performance is improved. By improving, it is possible to implement a high performance camera function in a portable terminal.

Abstract

The present invention relates to portable terminal camera module having a focus adjustment function and capable of minimizing shaking of a lens and tilting of a lens optical axis when the focus of a camera is adjusted. The portable terminal camera module according to the present invention comprises: a fixed part having an accommodation space; a mobile part having a lens mounted thereon and moving along an optical axis direction of the lens in the accommodation space; a guide roller disposed between the fixed part and the mobile part and guiding the movement of the mobile part; and a driving unit for generating power for moving the mobile part, wherein the guide roller is formed in a shape in which the diameter gradually decreases from both ends to a central part, and has a guide groove formed on the circumference of the central part.

Description

휴대단말기용 카메라 모듈Camera module for mobile terminal
본 발명은 초점 조절기능을 갖는 휴대단말기용 카메라 모듈로서, 카메라의 초점을 조절할 때 렌즈의 흔들림과 렌즈 광축의 틀어짐을 최소화할 수 있는 휴대단말기용 카메라 모듈에 관한 것이다.The present invention relates to a camera module for a portable terminal having a focus adjustment function, and to a camera module for a portable terminal capable of minimizing lens shake and distortion of the lens optical axis when adjusting the focus of the camera.
최근 이동통신기술이 발전함에 따라 스마트폰 등과 같은 휴대단말기에는 소형 및 경량화된 카메라 모듈이 개발되어 적용되고 있다.Recently, with the development of mobile communication technology, small and light weight camera modules have been developed and applied to portable terminals such as smartphones.
이러한 휴대단말기용 카메라 모듈은 렌즈계와, 렌즈계를 광축방향으로 이동시켜 초점을 조절하는 구동력을 제공하는 렌즈 구동부와, 렌즈계를 통해 입사되는 광을 촬상하여 화상신호로 변환하는 이미지 센서 등으로 구성되는 것이 일반적이다. 그리고 휴대단말기에 적용되는 카메라 모듈은 자동 초점 조절기능, 줌 기능, 손떨림 보정기능 등이 구비되고 있다.Such a camera module for a mobile terminal is composed of a lens system, a lens driver for providing a driving force to adjust the focus by moving the lens system in the optical axis direction, and an image sensor for capturing light incident through the lens system and converting the light into an image signal. It is common. The camera module applied to the portable terminal is provided with an auto focusing function, a zooming function, a camera shake correction function, and the like.
대한민국 공개특허공보 제10-2015-0083053호에는 고성능 및 소형화된 카메라 모듈이 개시되어 있다. 도 1은 종래의 카메라 모듈을 대각선 방향으로 절단하여 나타낸 절개 사시도이고, 도 2는 종래의 카메라 모듈의 단면도이다.Korean Unexamined Patent Publication No. 10-2015-0083053 discloses a high performance and miniaturized camera module. 1 is a cutaway perspective view of a conventional camera module cut diagonally, Figure 2 is a cross-sectional view of a conventional camera module.
종래의 카메라 모듈은 렌즈 배럴(13)과, 상기 렌즈 배럴(13) 내에 배치되는 렌즈와, 상기 렌즈 배럴(13)을 구비한 렌즈 배럴 캐리어(14)를 포함한다.The conventional camera module includes a lens barrel 13, a lens disposed in the lens barrel 13, and a lens barrel carrier 14 having the lens barrel 13.
종래의 카메라 모듈의 렌즈 배럴 캐리어(14)는 한 쌍의 가이드 장치에 의해 광축을 따라서 가이드되고, 렌즈 배럴(13)은 자동초점 구동부에 의해 광축을 따라서 이동하여 렌즈 초점을 조절한다. 그리고 한 쌍의 가이드 장치는 다수개의 볼 베어링(b1)을 포함한다.The lens barrel carrier 14 of the conventional camera module is guided along the optical axis by a pair of guide devices, and the lens barrel 13 is moved along the optical axis by the autofocus driver to adjust the lens focus. And the pair of guide devices includes a plurality of ball bearings b1.
그러나 종래의 카메라 모듈의 렌즈 배럴 캐리어(14)는 볼 베어링(b1)에 의해 가이드됨으로써, 렌즈 배럴(13) 및 렌즈 배럴 캐리어(14)가 자동초점 구동부에 의해 광축을 따라 이동할 때, 볼 베어링(b1)의 형상적 특성에 의해 회전방향이 일정하게 제한되지 않고 볼 베어링(b1)이 광축의 수직방향으로 유동할 수 있기 때문에 광축이 틀어져 이미지 센서의 중심과 어긋날 우려가 있다. 이러한 이유로 종래의 카메라 모듈은 고기능 및 고성능 카메라의 구현이 어려운 문제점이 있다.However, the lens barrel carrier 14 of the conventional camera module is guided by the ball bearing b1, so that when the lens barrel 13 and the lens barrel carrier 14 move along the optical axis by the autofocus driver, the ball bearing ( Due to the shape characteristic of b1), since the rotational direction is not limited to a constant and the ball bearing b1 can flow in the vertical direction of the optical axis, there is a possibility that the optical axis is distorted to deviate from the center of the image sensor. For this reason, the conventional camera module has a problem that it is difficult to implement a high-performance and high-performance camera.
본 발명은 전술한 문제점을 해결하기 위한 것으로서, 카메라의 초점을 조절할 때 렌즈의 흔들림과 렌즈 광축의 틀어짐을 최소화하여 정밀한 구동이 가능하고 초점 조절 성능을 향상시킬 수 있는 휴대단말기용 카메라 모듈을 제공하는데 그 목적이 있다.The present invention is to solve the above problems, to provide a camera module for a mobile terminal that can be precisely driven and improve the focusing performance by minimizing the lens shake and the lens optical axis when adjusting the focus of the camera. The purpose is.
상기 목적을 달성하기 위하여 본 발명의 휴대단말기용 카메라 모듈은, 수용공간이 형성되는 고정부; 렌즈가 장착되고 상기 수용공간에서 상기 렌즈의 광축방향을 따라 이동하는 이동부; 상기 고정부와 이동부 사이에 배치되어 상기 이동부의 이동을 안내하는 가이드롤러; 및 상기 이동부를 이동시키기 위한 동력을 발생시키는 구동부를 포함하고, 상기 가이드롤러는 양단으로부터 중심부로 갈수록 지름이 점점 작아지는 형상으로 형성되어 중심부의 둘레에 안내홈이 형성된다.In order to achieve the above object, the camera module for a mobile terminal of the present invention comprises: a fixing part in which a receiving space is formed; A moving part mounted on the lens and moving along the optical axis direction of the lens in the accommodation space; A guide roller disposed between the fixed part and the moving part to guide the movement of the moving part; And a driving unit generating power for moving the moving unit, wherein the guide roller is formed in a shape in which the diameter gradually decreases from both ends to the center, and a guide groove is formed around the center.
그리고 상기 고정부에는 상기 렌즈의 광축방향과 나란한 고정레일부가 형성되고, 상기 이동부에는 상기 렌즈의 광축방향과 나란한 이동레일부가 형성되며, 상기 고정레일부와 이동레일부는 상기 가이드롤러를 중심으로 서로 마주하도록 위치하여 각각 상기 안내홈에 삽입된다.The fixing part is provided with a fixed rail part parallel to the optical axis direction of the lens, the moving part is formed with a moving rail part parallel to the optical axis direction of the lens, and the fixing rail part and the moving rail part are mutually centered around the guide roller. Positioned to face each other is inserted into the guide groove.
그리고 상기 가이드롤러는 상기 렌즈의 광축방향을 따라 상하로 배치되는 제1 가이드롤러와 제2 가이드롤러를 포함하여 이루어지고, 상기 제1 가이드롤러와 제2 가이드롤러 사이에는 볼가이드가 배치되며, 상기 볼가이드는 상부가 상기 제1 가이드롤러에 형성된 안내홈에 삽입되고 하부가 상기 제2 가이드롤러에 형성된 안내홈에 삽입되어 상기 제1 가이드롤러 및 제2 가이드롤러의 회전방향과 반대방향으로 회전한다.The guide roller may include a first guide roller and a second guide roller disposed up and down along the optical axis direction of the lens, and a ball guide is disposed between the first guide roller and the second guide roller. The ball guide is inserted into the guide groove formed in the first guide roller and the lower part is inserted into the guide groove formed in the second guide roller and rotates in the opposite direction to the rotational direction of the first guide roller and the second guide roller. .
그리고 상기 볼가이드는 반지름이 상기 안내홈의 깊이보다 길고 지름이 상기 고정레일부와 이동레일부 사이의 거리보다 짧다.The ball guide has a radius longer than a depth of the guide groove and a diameter shorter than a distance between the fixed rail part and the moving rail part.
그리고 상기 가이드롤러는 제3 가이드롤러를 더 포함하여 이루어지며, 상기 고정레일부는 상기 구동부를 중심으로 양측에 각각 형성되고, 상기 이동레일부는 상기 구동부를 중심으로 양측에 각각 형성되며, 상기 제1 가이드롤러와 제2 가이드롤러는 상기 구동부를 중심으로 어느 일측에 형성된 고정레일부와 이동레일부 사이에 위치하고, 상기 제3 가이드롤러는 상기 구동부를 중심으로 다른 일측에 형성된 고정레일부와 이동레일부 사이에 위치한다.The guide roller further includes a third guide roller, wherein the fixed rail parts are formed on both sides of the driving part, respectively, and the moving rail parts are formed on both sides of the driving part, respectively, and the first guide. The roller and the second guide roller are positioned between the fixed rail part and the moving rail part formed on one side of the driving part, and the third guide roller is located between the fixed rail part and the moving rail part formed on the other side of the driving part. Located in
또한, 본 발명의 휴대단말기용 카메라 모듈은 상기 고정부와 이동부 사이에 배치되어 상기 이동부의 이동을 안내하는 볼가이드를 포함할 수 있으며, 상기 고정레일부와 이동레일부는 상기 구동부를 중심으로 어느 일측에 형성되고, 상기 볼가이드는 상기 구동부를 중심으로 다른 일측에 배치되며, 상기 고정부와 이동부 중 적어도 어느 하나에는 상기 렌즈의 광축방향과 나란한 레일홈이 형성되어 상기 볼가이드가 삽입된다.In addition, the camera module for a mobile terminal of the present invention may include a ball guide which is disposed between the fixed part and the moving part to guide the movement of the moving part, wherein the fixed rail part and the moving rail part are mainly driven by the driving part. It is formed on one side, the ball guide is disposed on the other side around the drive unit, at least one of the fixed portion and the moving portion is formed with a rail groove parallel to the optical axis direction of the lens is inserted into the ball guide.
그리고 상기 볼가이드는 상기 렌즈의 광축방향을 따라 상하로 배치되는 제1 볼가이드, 제2 볼가이드 및 제3 볼가이드로 이루어지고, 상기 제3 볼가이드는 상기 제1 볼가이드와 제2 볼가이드 사이에 위치하며, 상기 제3 볼가이드의 지름은 상기 제1 볼가이드 및 제2 볼가이드의 지름보다 짧다.The ball guide may include a first ball guide, a second ball guide, and a third ball guide disposed up and down along the optical axis direction of the lens, and the third ball guide may include the first ball guide and the second ball guide. Located between the diameter of the third ball guide is shorter than the diameter of the first ball guide and the second ball guide.
본 발명의 휴대단말기용 카메라 모듈은 카메라의 초점을 조절할 때 렌즈의 흔들림과 렌즈 광축의 틀어짐을 최소화하여 정밀한 구동이 가능하고 초점 조절 성능을 향상시킬 수 있다.The camera module for a mobile terminal of the present invention can precisely drive and improve focusing performance by minimizing lens shake and distortion of the lens optical axis when adjusting the focus of the camera.
도 1은 종래의 카메라 모듈을 대각선 방향으로 절단하여 나타낸 절개 사시도.1 is a perspective view showing a cutting by cutting a conventional camera module in a diagonal direction.
도 2는 종래의 카메라 모듈의 단면도.2 is a cross-sectional view of a conventional camera module.
도 3은 본 발명의 제1 실시예에 따른 휴대단말기용 카메라모듈의 사시도.3 is a perspective view of a camera module for a portable terminal according to a first embodiment of the present invention.
도 4는 본 발명의 제1 실시예에 따른 휴대단말기용 카메라 모듈의 일방향 분해사시도.Figure 4 is an exploded perspective view of a camera module for a portable terminal according to a first embodiment of the present invention.
도 5는 본 발명의 제1 실시예에 따른 휴대단말기용 카메라 모듈의 타방향 분해사시도.5 is an exploded perspective view of another direction of the camera module for a mobile terminal according to the first embodiment of the present invention.
도 6은 본 발명의 제1 실시예에 따른 휴대단말기용 카메라 모듈의 평면도.6 is a plan view of a camera module for a mobile terminal according to a first embodiment of the present invention.
도 7은 본 발명의 제1 실시예에 따른 가이드롤러의 사시도.7 is a perspective view of a guide roller according to the first embodiment of the present invention.
도 8은 도 3의 A-A선을 취하여 본 단면도.8 is a cross-sectional view taken along line A-A of FIG.
도 9는 본 발명의 제2 실시예에 따른 휴대단말기용 카메라모듈의 사시도.9 is a perspective view of a camera module for a mobile terminal according to a second embodiment of the present invention.
도 10은 본 발명의 제2 실시예에 따른 휴대단말기용 카메라 모듈의 일방향 분해사시도.10 is an exploded perspective view of a camera module for a portable terminal according to a second embodiment of the present invention.
도 11은 본 발명의 제2 실시예에 따른 휴대단말기용 카메라 모듈의 타방향 분해사시도.11 is an exploded perspective view of another direction of a camera module for a portable terminal according to a second embodiment of the present invention.
도 12는 본 발명의 제2 실시예에 따른 휴대단말기용 카메라 모듈의 평면도.12 is a plan view of a camera module for a mobile terminal according to a second embodiment of the present invention.
도 13은 본 발명의 제2 실시예에 따른 가이드롤러의 사시도.13 is a perspective view of a guide roller according to a second embodiment of the present invention.
도 14는 본 발명의 제2 실시예에 따른 휴대단말기용 카메라 모듈의 단면도.14 is a cross-sectional view of a camera module for a portable terminal according to a second embodiment of the present invention.
도 15는 본 발명의 다른 실시예에 따른 휴대단말기용 카메라 모듈의 단면도.15 is a cross-sectional view of a camera module for a mobile terminal according to another embodiment of the present invention.
본 발명은 초점 조절기능을 갖는 휴대단말기용 카메라 모듈에 관한 것으로서, 이미지 센서와 렌즈 사이의 거리를 조절하여 카메라의 초점을 조절할 때 렌즈의 흔들림과 렌즈 광축의 틀어짐을 최소화하여 정밀한 구동이 가능하고 초점 조절 성능을 향상시킬 수 있다.The present invention relates to a camera module for a mobile terminal having a focus adjustment function, and to precisely drive and focus by minimizing lens shake and distortion of the lens optical axis when adjusting the focus of the camera by adjusting the distance between the image sensor and the lens. It can improve the regulation performance.
제1 First 실시예Example
본 발명의 제1 실시예에 따른 휴대단말기용 카메라 모듈은 도 3 내지 도 8에 도시된 바와 같이, 고정부(100), 이동부(200), 가이드롤러(300), 구동부(400)로 이루어진다.3 to 8, the camera module for a mobile terminal according to the first embodiment of the present invention includes a fixing part 100, a moving part 200, a guide roller 300, and a driving part 400. .
고정부(100)는 휴대단말기에 장착되고, 도 3 및 도 4에 도시된 바와 같이 이동부(200)가 삽입 배치되는 수용공간(110)이 형성된다. 이러한 고정부(100)에는 전방에 요크(120)가 장착되고, 수용공간(110)을 향하는 요크(120)의 내측면에는 구동부(400)의 구성요소 중 하나인 코일부(410)가 장착된다. 그리고 코일부(410)를 중심으로 양측에는 고정레일부(130a,130b)가 형성된다. 도 5에 도시된 바와 같이, 고정레일부(130a,130b)는 수용공간(110)이 형성되어 있는 고정부(100)의 내측에서 렌즈(미도시)의 광축방향(O)과 나란하게 형성된다. 그리고 고정부(100)에는 커버(미도시)가 장착되어 고정부(100)의 상부를 덮는다.The fixing part 100 is mounted to the portable terminal, and as shown in FIGS. 3 and 4, an accommodation space 110 into which the moving part 200 is inserted is formed. The yoke 120 is mounted at the front of the fixing unit 100, and the coil unit 410, which is one of the components of the driving unit 400, is mounted on the inner surface of the yoke 120 facing the receiving space 110. . In addition, fixed rail parts 130a and 130b are formed at both sides of the coil part 410. As shown in FIG. 5, the fixing rail parts 130a and 130b are formed in parallel with the optical axis direction O of the lens (not shown) inside the fixing part 100 in which the accommodation space 110 is formed. . A cover (not shown) is mounted on the fixing part 100 to cover the upper part of the fixing part 100.
이동부(200)는 수용공간(110)에서 렌즈의 광축방향(O)을 따라 이동하여 이미지 센서(미도시)와 렌즈(미도시) 사이의 거리를 조절한다. 그리고 이동부(200)에는 코일부(410)와 마주하는 전방에 마그네트부(420)가 장착되어 코일부(410)의 주위에 자기장을 형성한다. 마그네트부(420)는 코일부(410)와 함께 구동부(400)를 구성하는 구성요소이다. 그리고 도 4에 도시된 바와 같이, 이동부(200)에는 마그네트부(420)를 중심으로 양측에 렌즈의 광축방향(O)과 나란한 이동레일부(210a,210b)가 형성된다. 그리고 도 6에 도시된 바와 같이 고정레일부(130a,130b)와 이동레일부(210a,210b)는 가이드롤러(300)를 중심으로 서로 마주하도록 위치한다.The moving unit 200 moves along the optical axis direction O of the lens in the accommodation space 110 to adjust the distance between the image sensor (not shown) and the lens (not shown). The magnet 200 is mounted to the moving part 200 in front of the coil part 410 to form a magnetic field around the coil part 410. The magnet part 420 is a component constituting the driving part 400 together with the coil part 410. As shown in FIG. 4, the moving parts 200 are provided with moving rail parts 210a and 210b parallel to the optical axis direction O of the lens on both sides of the magnet part 420. As shown in FIG. 6, the fixed rail parts 130a and 130b and the moving rail parts 210a and 210b are positioned to face each other with respect to the guide roller 300.
이하, 설명의 편의를 위하여, 구동부(400)를 중심으로 어느 일측에 서로 마주하도록 형성되어 있는 고정레일부와 이동레일부를 제1 고정레일부(130a) 및 제1 이동레일부(210a)라 하고, 구동부(400)를 중심으로 다른 일측에 서로 마주하도록 형성되어 있는 고정레일부와 이동레일부를 제2 고정레일부(130b) 및 제2 이동레일부(210b)라 한다.Hereinafter, for convenience of description, the fixed rail part and the moving rail part which are formed to face each other on one side of the driving part 400 are referred to as the first fixed rail part 130a and the first moving rail part 210a. The fixed rail part and the moving rail part which are formed to face each other on the other side of the driving part 400 are referred to as the second fixed rail part 130b and the second moving rail part 210b.
가이드롤러(300)는 고정부(100)와 이동부(200) 사이에 배치되어 이동부(200)의 이동을 안내한다. 구체적으로 도 7에 도시된 바와 같이 가이드롤러(300)는 양단으로부터 중심부로 갈수로 지름이 점점 작아지는 형상으로 형성되어 중심부의 둘레에 안내홈(310)이 형성된다.The guide roller 300 is disposed between the fixing part 100 and the moving part 200 to guide the movement of the moving part 200. Specifically, as illustrated in FIG. 7, the guide roller 300 is formed in a shape in which the diameter gradually decreases from both ends to the center, and the guide groove 310 is formed around the center.
이러한 가이드롤러(300)는 동일한 형상의 세 개의 가이드롤러(300)로 이루어진다. 각각의 가이드롤러(300)는 설명의 편의를 위하여 제1 가이드롤러(300a), 제2 가이드롤러(300b) 및 제3 가이드롤러(300c)로 구분한다.The guide roller 300 is composed of three guide rollers 300 of the same shape. Each guide roller 300 is divided into a first guide roller 300a, a second guide roller 300b and a third guide roller 300c for convenience of description.
도 8에 도시된 바와 같이, 제1 가이드롤러(300a)와 제2 가이드롤러(300b)는 제1 고정레일부(130a)와 제1 이동레일부(210a) 사이에서 렌즈의 광축방향(O)을 따라 상하로 배치되고, 제1 가이드롤러(300a)와 제2 가이드롤러(300b) 사이에는 볼가이드(320)가 배치된다. 제1 가이드롤러(300a) 및 제2 가이드롤러(300b)를 중심으로 서로 마주하도록 배치된 제1 고정레일부(130a)와 제1 이동레일부(210a)는 서로 반대방향에서 제1 가이드롤러(300a) 및 제2 가이드롤러(300b)에 각각 형성되어 있는 안내홈(310a,310b)에 삽입된다.As shown in FIG. 8, the first guide roller 300a and the second guide roller 300b have an optical axis direction O of the lens between the first fixed rail part 130a and the first moving rail part 210a. The upper and lower sides are disposed along the ball guide 320 between the first guide roller 300a and the second guide roller 300b. The first fixed rail part 130a and the first moving rail part 210a which are disposed to face each other around the first guide roller 300a and the second guide roller 300b are opposite to each other. It is inserted into the guide grooves 310a and 310b respectively formed in the 300a) and the second guide roller 300b.
볼가이드(320)는 상부가 제1 가이드롤러(300a)에 형성된 안내홈(310a)에 삽입되고 하부가 제2 가이드롤러(300b)에 형성된 안내홈(310b)에 삽입되어, 이동부(200)의 이동시에 제1 가이드롤러(300a) 및 제2 가이드롤러(300b)의 회전방향과 반대방향으로 회전한다. 구체적으로 구 형태의 볼가이드(320)는 반지름이 안내홈(310)의 깊이보다 길고 지름이 제1 고정레일부(130a)와 제1 이동레일부(210a) 사이의 거리보다 짧다.The ball guide 320 is inserted into the guide groove 310a formed in the upper portion of the first guide roller 300a and the lower portion is inserted into the guide groove 310b formed in the second guide roller 300b. Rotates in a direction opposite to the rotation direction of the first guide roller 300a and the second guide roller 300b. Specifically, the spherical ball guide 320 has a radius longer than the depth of the guide groove 310 and the diameter is shorter than the distance between the first fixed rail portion 130a and the first moving rail portion 210a.
제3 가이드롤러(300c)는 제2 고정레일부(120b)와 제2 이동레일부(210b) 사이에 위치한다. 그리고 제3 가이드롤러(300c)를 중심으로 서로 마주하도록 배치된 제2 고정레일부(130b)와 제2 이동레일부(210b)는 서로 반대방향에서 제3 가이드롤러(300c)에 형성되어 있는 안내홈(310c)에 삽입된다.The third guide roller 300c is positioned between the second fixed rail part 120b and the second moving rail part 210b. The second fixed rail 130b and the second movable rail 210b disposed to face each other with respect to the third guide roller 300c are guided on the third guide roller 300c in opposite directions. It is inserted into the groove 310c.
상술한 바와 같이 본 실시예에서는 구동부(400)를 중심으로 양측의 가이드롤러(300a,300b,300c)의 구조를 달리하였지만, 양측에 동일하게 제1 가이드롤러(300a), 제2 가이드롤러(300b), 볼가이드(320) 구조를 적용하거나 또는 양측에 동일하게 제3 가이드롤러(300c)만을 적용할 수도 있다. 이와 같이 단일 또는 복수의 가이드롤러(300)를 다양한 구조로 배열하여 적용할 수 있다.As described above, although the structure of the guide rollers 300a, 300b, and 300c on both sides of the driving unit 400 is different from each other, the first guide roller 300a and the second guide roller 300b are the same on both sides. ), The ball guide 320 may be applied or only the third guide roller 300c may be applied to both sides. As such, the single or plural guide rollers 300 may be arranged in various structures and applied.
구동부(400)는 이동부(200)를 이동시키기 위한 동력을 발생시킨다. 전술한 바와 같이 구동부(400)는 코일부(410)와 코일부(410) 주위에 자기장을 형성하는 마그네트부(420)로 이루어진다. 이에 따라 코일부(410)에 전류가 형성되면 이동부(200)를 이동시키기 위한 구동력이 발생한다. 그리고 마그네트부(420)와 요크(120) 사이에 발생하는 인력에 의해 고정부(100), 가이드롤러(300), 이동부(200)가 서로 밀착된 상태로 유지된다.The driver 400 generates power for moving the moving part 200. As described above, the driving unit 400 includes a coil unit 410 and a magnet unit 420 forming a magnetic field around the coil unit 410. Accordingly, when a current is formed in the coil unit 410, a driving force for moving the moving unit 200 is generated. The fixed part 100, the guide roller 300, and the moving part 200 are maintained in close contact with each other by an attraction force generated between the magnet part 420 and the yoke 120.
제1 실시예에서는 고정부(100)에 코일부(410)를 장착하고 이동부(200)에 마그네트부(420)를 장착하였지만, 다양한 실시예에 따라 고정부(100)에 마그네트부(420)를 장착하고 이동부(200)에 코일부(410)를 장착할 수도 있다.In the first exemplary embodiment, the coil part 410 is mounted on the fixing part 100 and the magnet part 420 is mounted on the moving part 200, but the magnet part 420 is fixed to the fixing part 100 according to various embodiments. Mount the coil unit 410 to the moving unit 200 may be mounted.
다음은 상술한 구성으로 이루어진 본 발명의 휴대단말기용 카메라 모듈의 작동구조에 대하여 자세히 설명한다.Next, the operation structure of the camera module for a mobile terminal of the present invention having the above-described configuration will be described in detail.
먼저, 고정부(100)의 수용공간(110)에 이동부(200)가 배치되고, 고정부(100)와 이동부(200) 사이에 제1 내지 제3 가이드롤러(300a,300b,300c)가 배치된다. 그리고 마그네트부(420)와 요크(120) 사이에 발생하는 인력에 의해 이동부(200)가 제1 내지 제3 가이드롤러(300a,300b,300c)를 고정부(100) 방향으로 가압함으로써 서로 밀착된 상태로 유지된다.First, the moving part 200 is disposed in the accommodation space 110 of the fixing part 100, and the first to third guide rollers 300a, 300b, and 300c between the fixing part 100 and the moving part 200. Is placed. In addition, the moving part 200 presses the first to third guide rollers 300a, 300b, and 300c toward the fixing part 100 by the attraction force generated between the magnet part 420 and the yoke 120, thereby closely contacting each other. Will remain intact.
이에 따라 제1 고정레일부(130a)는 제1 가이드롤러(300a)와 제2 가이드롤러(300b)에 형성되어 있는 안내홈(310a,310b)에 삽입되고, 제1 이동레일부(210a)는 제1 고정레일부(130a)의 반대편에서 제1 가이드롤러(300a)와 제2 가이드롤러(300b)에 형성되어 있는 안내홈(310a,310b)에 삽입된다. 그리고 볼가이드(320)는 제1 가이드롤러(300a)와 제2 가이드롤러(300b) 사이에 배치되어 제1 가이드롤러(300a)와 제2 가이드롤러(300b)를 상하방향으로 이격시킨다. 이때, 도 8에 도시된 바와 같이, 볼가이드(320)의 상부 일부는 제1 가이드롤러(300a)에 형성되어 있는 안내홈(310a)에 삽입되며, 볼가이드(320)의 하부 일부는 제2 가이드롤러(300b)에 형성되어 있는 안내홈(310b)에 삽입된다. 이에 따라 제1 가이드롤러(300a)와 제2 가이드롤러(300b)는 이동부(200)의 이동시에 동일한 방향으로 회전하고, 볼가이드(320)는 제1 가이드롤러(300a) 및 제2 가이드롤러(300b)의 회전방향과 반대방향으로 회전하게 된다.Accordingly, the first fixed rail portion 130a is inserted into the guide grooves 310a and 310b formed in the first guide roller 300a and the second guide roller 300b, and the first moving rail portion 210a is It is inserted into the guide grooves 310a and 310b formed in the first guide roller 300a and the second guide roller 300b on the opposite side of the first fixed rail portion 130a. The ball guide 320 is disposed between the first guide roller 300a and the second guide roller 300b to separate the first guide roller 300a and the second guide roller 300b in the vertical direction. At this time, as shown in Figure 8, the upper portion of the ball guide 320 is inserted into the guide groove 310a formed in the first guide roller 300a, the lower portion of the ball guide 320 is the second It is inserted into the guide groove 310b formed in the guide roller 300b. Accordingly, the first guide roller 300a and the second guide roller 300b rotate in the same direction when the moving part 200 moves, and the ball guide 320 has the first guide roller 300a and the second guide roller. It is rotated in the direction opposite to the rotation direction of (300b).
또한, 제2 고정레일부(130b)와 제2 이동레일부(210b)는 제3 가이드롤러(300c)를 중심으로 서로 반대편에서 제3 가이드롤러(300c)에 형성되어 있는 안내홈(310c)에 삽입된다.In addition, the second fixed rail portion 130b and the second moving rail portion 210b may be formed in the guide groove 310c formed in the third guide roller 300c on the opposite side with respect to the third guide roller 300c. Is inserted.
이후, 코일부(410)에 전류가 형성되면 구동력이 발생하여 이동부(200)가 렌즈의 광축방향(O)을 따라 이동하게 된다. 이동부(200)가 이동함에 따라 제1 및 제2 이동레일부(210a,210b)에 의해 제1 내지 제3 가이드롤러(300a,300b,300c)가 회전하면서 제1 및 제2 고정레일부(130a,130b)를 따라 이동하게 된다.Subsequently, when a current is formed in the coil unit 410, a driving force is generated to move the moving unit 200 along the optical axis direction O of the lens. As the moving part 200 moves, the first to second guide rollers 300a, 300b, and 300c rotate by the first and second moving rail parts 210a and 210b, respectively. And move along 130a and 130b.
이와 같이 제1, 제2, 제3 가이드롤러(300a,300b,300c)에 형성된 안내홈(310a,310b,310c)에 제1 및 제2 고정레일부(130a,130b), 제1 및 제2 이동레일부(210a,210b)가 삽입된 상태로 이동부(200)가 렌즈의 광축방향(O)을 따라 이동함으로써, 이동부(200)가 이동할 때 이동부(200)의 흔들림을 최소화하고 렌즈의 광축이 틀어지는 것을 최소화할 수 있다. 즉 렌즈가 장착된 이동부(200)가 흔들리거나 이동부(200)가 이동하면서 렌즈의 광축이 틀어져 렌즈의 광축이 카메라의 이미지 센서의 중심과 어긋나는 것을 방지할 수 있다.Thus, the first and second fixed rail portions 130a, 130b, first and second in the guide grooves 310a, 310b and 310c formed in the first, second and third guide rollers 300a, 300b and 300c. By moving the moving part 200 along the optical axis direction O of the lens with the moving rail parts 210a and 210b inserted, the moving part 200 is minimized when the moving part 200 moves and the lens is minimized. The optical axis of can be minimized. That is, the optical unit of the lens is shifted while the moving unit 200 mounted with the lens is shaken or the moving unit 200 moves, thereby preventing the optical axis of the lens from being shifted from the center of the image sensor of the camera.
이에 따라 카메라의 초점을 조절할 때 렌즈의 흔들림과 렌즈 광축의 틀어짐을 최소화하여 카메라 모듈의 정밀한 구동이 가능하고 초점 조절 성능을 향상시킬 수 있다.Accordingly, the camera module can be precisely driven and the focusing performance can be improved by minimizing lens shake and distortion of the lens optical axis when adjusting the focus of the camera.
제2 2nd 실시예Example
본 발명의 제2 실시예에 따른 휴대단말기용 카메라 모듈은 도 9 내지 도 15에 도시된 바와 같이, 고정부(1100), 이동부(1200), 가이드롤러(1300), 볼가이드(1400), 구동부(1500)로 이루어진다.As illustrated in FIGS. 9 to 15, the camera module for a portable terminal according to the second embodiment of the present invention includes a fixing part 1100, a moving part 1200, a guide roller 1300, a ball guide 1400, The driving unit 1500 is formed.
고정부(1100)는 휴대단말기에 장착되고, 도 9 및 도 10에 도시된 바와 같이 이동부(1200)가 삽입 배치되는 수용공간(1110)이 형성된다. 이러한 고정부(1100)에는 전방에 요크(1130)가 장착되고, 수용공간(1110)을 향하는 요크(1130)의 내측면에는 구동부(1500)의 구성요소 중 하나인 코일부(1510)가 장착된다. 그리고 코일부(1510)를 중심으로 양측에는 고정레일부(1130)와 제1 레일홈(1140)이 형성된다. 도 11에 도시된 바와 같이 고정레일부(1130)는 수용공간(1110)이 형성되어 있는 고정부(1100)의 내측에서 렌즈(미도시)의 광축방향(O)과 나란하게 형성된다. 또한, 제1 레일홈(1140)은 수용공간(1110)이 형성되어 있는 고정부(1100)의 내측에서 렌즈의 광축방향(O)과 나란하게 형성된다. 그리고 고정부(1100)에는 커버(미도시)가 장착되어 고정부(1100)의 상부를 덮는다.The fixing unit 1100 is mounted on the portable terminal, and as shown in FIGS. 9 and 10, an accommodation space 1110 into which the moving unit 1200 is inserted is formed. The yoke 1130 is mounted at the front of the fixing unit 1100, and the coil unit 1510, which is one of the components of the driving unit 1500, is mounted on the inner surface of the yoke 1130 facing the receiving space 1110. . A fixed rail unit 1130 and a first rail groove 1140 are formed at both sides of the coil unit 1510. As shown in FIG. 11, the fixed rail unit 1130 is formed in parallel with the optical axis direction O of the lens (not shown) inside the fixing unit 1100 in which the accommodation space 1110 is formed. In addition, the first rail groove 1140 is formed in parallel with the optical axis direction O of the lens in the inner side of the fixing part 1100 in which the accommodation space 1110 is formed. A cover (not shown) is mounted on the fixing part 1100 to cover an upper portion of the fixing part 1100.
이동부(1200)는 수용공간(1110)에서 렌즈의 광축방향(O)을 따라 이동하며 이미지 센서(미도시)와 렌즈(미도시) 사이의 거리를 조절한다. 그리고 이동부(1200)에는 코일부(1510)와 마주하는 전방에 마그네트부(1520)가 장착되어 코일부(1510)의 주위에 자기장을 형성한다. 마그네트부(1520)는 코일부(1510)와 함께 구동부(1500)를 구성하는 구성요소이다. 그리고 도 10에 도시된 바와 같이, 이동부(1200)에는 마그네트부(1520)를 중심으로 렌즈의 광축방향(O)과 나란한 이동레일부(1210)와 제2 레일홈(1220)이 형성된다. 그리고 도 12에 도시된 바와 같이 고정레일부(1130)와 이동레일부(1210)는 가이드롤러(1300)를 중심으로 서로 마주하도록 위치한다. 또한, 제1 레일홈(1140)과 제2 레일홈(1220)은 볼가이드(1400)를 중심으로 서로 마주하도록 위치한다.The moving unit 1200 moves along the optical axis direction O of the lens in the accommodation space 1110 and adjusts the distance between the image sensor (not shown) and the lens (not shown). In addition, the magnet part 1520 is mounted to the moving part 1200 in front of the coil part 1510 to form a magnetic field around the coil part 1510. The magnet unit 1520 is a component constituting the driving unit 1500 together with the coil unit 1510. As shown in FIG. 10, the moving part 1200 includes a moving rail part 1210 and a second rail groove 1220 parallel to the optical axis direction O of the lens with respect to the magnet part 1520. As shown in FIG. 12, the fixed rail unit 1130 and the moving rail unit 1210 are positioned to face each other with respect to the guide roller 1300. In addition, the first rail groove 1140 and the second rail groove 1220 are positioned to face each other with respect to the ball guide 1400.
전술한 바와 같이 레일홈은 고정부(1100)에 형성되어 있는 제1 레일홈(1140)과 이동부(1200)에 형성되어 있는 제2 레일홈(1220)으로 구분할 수 있으며, 제1 레일홈(1140)과 제2 레일홈(1220) 중 어느 하나의 레일홈만 형성할 수도 있다.As described above, the rail groove may be divided into a first rail groove 1140 formed in the fixing part 1100 and a second rail groove 1220 formed in the moving part 1200. Only one of the rail grooves 1140 and the second rail groove 1220 may be formed.
가이드롤러(1300)는 고정부(1100)와 이동부(1200) 사이에 배치되어 이동부(1200)의 이동을 안내한다. 구체적으로 도 13에 도시된 바와 같이 가이드롤러(1300)는 양단으로부터 중심부로 갈수록 지름이 점점 작아지는 형상으로 형성되어 중심부의 둘레에 안내홈(1310)이 형성된다.The guide roller 1300 is disposed between the fixed part 1100 and the moving part 1200 to guide the movement of the moving part 1200. Specifically, as shown in FIG. 13, the guide roller 1300 is formed in a shape in which the diameter gradually decreases from both ends toward the center, and the guide groove 1310 is formed around the center.
도 12에 도시된 바와 같이, 가이드롤러(1300)는 고정레일부(1130)와 이동레일부(1210) 사이에 위치한다. 그리고 가이드롤러(1300)를 중심으로 서로 마주하도록 배치된 고정레일부(1130)와 이동레일부(1210)는 서로 반대방향에서 가이드롤러(1300)에 형성되어 있는 안내홈(1310)에 삽입된다.As shown in FIG. 12, the guide roller 1300 is positioned between the fixed rail part 1130 and the moving rail part 1210. In addition, the fixed rail unit 1130 and the movable rail unit 1210 disposed to face each other with respect to the guide roller 1300 are inserted into the guide groove 1310 formed in the guide roller 1300 in opposite directions.
한편, 본 발명의 가이드롤러(1300)에 의한 가이드구조는 도 15에 도시된 바와 같이, 두 개의 가이드롤러(1300) 사이에 볼부재(1320)를 배치할 수도 있다.On the other hand, the guide structure by the guide roller 1300 of the present invention, as shown in Figure 15, may be disposed between the ball member 1320 between the two guide rollers 1300.
볼가이드(1400)는 도 14에 도시된 바와 같이 제1 볼가이드(1410), 제2 볼가이드(1420) 및 제3 볼가이드(1430)로 구분할 수 있다. 제1 볼가이드(1410)와 제2 볼가이드(1420)는 제1 레일홈(1140)과 제2 레일홈(1220) 사이에서 렌즈의 광축방향(O)을 따라 상하로 배치되고, 제1 볼가이드(1410)와 제2 볼가이드(1420) 사이에는 제3 볼가이드(1430)가 배치된다. 제1 볼가이드(1410) 및 제2 볼가이드(1420)를 중심으로 서로 반대방향에서 마주하도록 배치된 제1 레일홈(1140)과 제2 레일홈(1220)에는 각각 제1 볼가이드(1410) 및 제2 볼가이드(1420)의 일부가 삽입된다. 제3 볼가이드(1430)는 제1 볼가이드(1410)와 제2 볼가이드(1420) 사이에 배치되어 제1 볼가이드(1410)와 제2 볼가이드(1420)를 이격시키고, 이동부(1200)의 이동시에 제1 볼가이드(1410) 및 제2 볼가이드(1420)의 회전방향과 반대방향으로 회전한다. 제3 볼가이드(1430)의 지름은 제1 볼가이드(1410) 및 제2 볼가이드(1420)의 지름보다 짧다.As illustrated in FIG. 14, the ball guide 1400 may be divided into a first ball guide 1410, a second ball guide 1420, and a third ball guide 1430. The first ball guide 1410 and the second ball guide 1420 are disposed vertically along the optical axis direction O of the lens between the first rail groove 1140 and the second rail groove 1220, and the first ball The third ball guide 1430 is disposed between the guide 1410 and the second ball guide 1420. The first ball guide 1410 is disposed in the first rail groove 1140 and the second rail groove 1220 which are disposed to face each other in opposite directions with respect to the first ball guide 1410 and the second ball guide 1420. And a part of the second ball guide 1420 is inserted. The third ball guide 1430 is disposed between the first ball guide 1410 and the second ball guide 1420 to separate the first ball guide 1410 and the second ball guide 1420, the moving part 1200 ) Rotates in a direction opposite to the rotation direction of the first ball guide 1410 and the second ball guide 1420. The diameter of the third ball guide 1430 is shorter than the diameter of the first ball guide 1410 and the second ball guide 1420.
구동부(1500)는 이동부(1200)를 이동시키기 위한 동력을 발생시킨다. 전술한 바와 같이 구동부(1500)는 코일부(1510)와 코일부(1510) 주위에 자기장을 형성하는 마그네트부(1520)로 이루어진다. 이에 따라 코일부(1510)에 전류가 형성되면 이동부(1200)를 이동시키기 위한 구동력이 발생한다. 그리고 마그네트부(1520)와 요크(1130) 사이에 발생하는 인력에 의해 고정부(1100), 가이드롤러(1300), 볼가이드(1400), 이동부(1200)가 각각 서로 밀착된 상태로 유지된다.The driving unit 1500 generates power for moving the moving unit 1200. As described above, the driving unit 1500 includes a coil unit 1510 and a magnet unit 1520 that forms a magnetic field around the coil unit 1510. Accordingly, when a current is formed in the coil unit 1510, a driving force for moving the moving unit 1200 is generated. In addition, the fixed part 1100, the guide roller 1300, the ball guide 1400, and the moving part 1200 are maintained in close contact with each other by the force generated between the magnet part 1520 and the yoke 1130. .
제2 실시예에서는 고정부(1100)에 코일부(1510)를 장착하고 이동부(1200)에 마그네트부(1520)를 장착하였지만, 본 발명의 다양한 실시예에 따라 고정부(1100)에 마그네트부(1520)를 장착하고 이동부(1200)에 코일부(1510)를 장착할 수도 있다.In the second embodiment, although the coil unit 1510 is mounted on the fixing unit 1100 and the magnet unit 1520 is mounted on the moving unit 1200, the magnet unit is mounted on the fixing unit 1100 according to various embodiments of the present disclosure. The coil 1520 may be mounted and the coil unit 1510 may be mounted on the moving unit 1200.
다음은 상술한 구성으로 이루어진 본 발명의 휴대단말기용 카메라 모듈의 작동구조에 대하여 자세히 설명한다.Next, the operation structure of the camera module for a mobile terminal of the present invention having the above-described configuration will be described in detail.
먼저, 고정부(1100)의 수용공간(1110)에 이동부(1200)가 배치되고, 고정부(1100)와 이동부(1200) 사이에 가이드롤러(1300) 및 볼가이드(1400)가 배치된다. 그리고 마그네트부(1520)와 요크(1130) 사이에 발생하는 인력에 의해 이동부(1200)가 가이드롤러(1300)와 볼가이드(1400)를 고정부(1100) 방향으로 가압함으로써 서로 밀착된 상태로 유지된다.First, the moving part 1200 is disposed in the accommodation space 1110 of the fixing part 1100, and the guide roller 1300 and the ball guide 1400 are disposed between the fixing part 1100 and the moving part 1200. . In addition, the moving part 1200 presses the guide roller 1300 and the ball guide 1400 in the direction of the fixing part 1100 by the attraction force generated between the magnet part 1520 and the yoke 1130. maintain.
이에 따라 고정레일부(1130)는 가이드롤러(1300)에 형성되어 있는 안내홈(1310)에 삽입되고, 이동레일부(1210)는 고정레일부(1130)의 반대편에서 가이드롤러(1300)에 형성되어 있는 안내홈(1310)에 삽입된다. 그리고 제1 내지 제3 볼가이드(1410,1420,1430)는 제1 레일홈(1140)과 제2 레일홈(1220) 사이에 배치된다.Accordingly, the fixed rail portion 1130 is inserted into the guide groove 1310 formed in the guide roller 1300, and the moving rail portion 1210 is formed in the guide roller 1300 on the opposite side of the fixed rail portion 1130 It is inserted into the guide groove 1310. The first to third ball guides 1410, 1420, and 1430 are disposed between the first rail groove 1140 and the second rail groove 1220.
이후, 코일부(1510)에 전류가 형성되면 구동력이 발생하여 이동부(1200)가 렌즈의 광축방향(O)을 따라 이동하게 된다. 이동부(1200)가 이동함에 따라 이동레일부(1210)에 의해 가이드롤러(1300)가 회전하면서 고정레일부(1130)를 따라 이동하게 된다.Thereafter, when a current is formed in the coil unit 1510, a driving force is generated to move the moving unit 1200 along the optical axis direction O of the lens. As the moving part 1200 moves, the guide roller 1300 is rotated by the moving rail part 1210 to move along the fixed rail part 1130.
이와 같이 가이드롤러(1300)에 형성된 안내홈(1310)에 고정레일부(1130) 및 이동레일부(1210)가 삽입된 상태로 이동부(1200)가 렌즈의 광축방향(O)을 따라 이동함으로써, 이동부(1200)가 이동할 때 이동부(1200)의 흔들림을 최소화하고 렌즈의 광축이 틀어지는 것을 최소화할 수 있다. 즉 렌즈가 장착된 이동부(1200)가 흔들리거나 이동부(1200)가 이동하면서 렌즈의 광축이 틀어져 렌즈의 광축이 카메라의 이미지센서의 중심과 어긋나는 것을 방지할 수 있다.As such, the moving part 1200 moves along the optical axis direction O of the lens while the fixed rail part 1130 and the moving rail part 1210 are inserted into the guide groove 1310 formed in the guide roller 1300. When the moving unit 1200 moves, the shaking of the moving unit 1200 may be minimized and the optical axis of the lens may be minimized. That is, the optical axis of the lens is shifted while the moving unit 1200 on which the lens is mounted is shaken or the moving unit 1200 moves, thereby preventing the optical axis of the lens from being shifted from the center of the image sensor of the camera.
이에 따라 카메라의 초점을 조절할 때 렌즈의 흔들림과 렌즈 광축의 틀어짐을 최소화하여 카메라 모듈의 정밀한 구동이 가능하고 초점 조절 성능을 향상시킬 수 있다.Accordingly, the camera module can be precisely driven and the focusing performance can be improved by minimizing lens shake and distortion of the lens optical axis when adjusting the focus of the camera.
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 mobile terminal according to the present invention is not limited to the above-described embodiments and can be modified in various ways within the scope of the technical idea of the present invention.
본 발명의 휴대단말기용 카메라 모듈은 스마트폰 등과 같은 휴대단말기에 설치되어 카메라 기능을 수행하며, 카메라의 초점을 조절할 때 렌즈의 흔들림과 렌즈 광축의 틀어짐을 최소화하여 정밀한 구동이 가능하고 초점 조절 성능을 향상시킴으로써 휴대단말기에서 고성능 카메라 기능의 구현이 가능하다.The camera module for a mobile terminal of the present invention is installed in a mobile terminal such as a smart phone to perform a camera function, and when the focus of the camera is adjusted by minimizing lens shake and distortion of the lens optical axis, precise driving is possible and focus adjustment performance is improved. By improving, it is possible to implement a high performance camera function in a portable terminal.

Claims (8)

  1. 수용공간이 형성되는 고정부;A fixing part in which a receiving space is formed;
    렌즈가 장착되고 상기 수용공간에서 상기 렌즈의 광축방향을 따라 이동하는 이동부;A moving part mounted on the lens and moving along the optical axis direction of the lens in the accommodation space;
    상기 고정부와 이동부 사이에 배치되어 상기 이동부의 이동을 안내하는 가이드롤러; 및A guide roller disposed between the fixed part and the moving part to guide the movement of the moving part; And
    상기 이동부를 이동시키기 위한 동력을 발생시키는 구동부를 포함하고,It includes a drive unit for generating power for moving the moving unit,
    상기 가이드롤러는 양단으로부터 중심부로 갈수록 지름이 점점 작아지는 형상으로 형성되어 중심부의 둘레에 안내홈이 형성되는 것을 특징으로 하는 휴대단말기용 카메라 모듈.The guide roller is a camera module for a mobile terminal, characterized in that the guide groove is formed in the shape of the diameter gradually decreases toward both ends from the center to the center.
  2. 청구항 1에 있어서,The method according to claim 1,
    상기 고정부에는 상기 렌즈의 광축방향과 나란한 고정레일부가 형성되고,The fixing portion is provided with a fixing rail portion parallel to the optical axis direction of the lens,
    상기 이동부에는 상기 렌즈의 광축방향과 나란한 이동레일부가 형성되며,The moving part is provided with a moving rail part parallel to the optical axis direction of the lens,
    상기 고정레일부와 이동레일부는 상기 가이드롤러를 중심으로 서로 마주하도록 위치하여 각각 상기 안내홈에 삽입되는 것을 특징으로 하는 휴대단말기용 카메라 모듈.The fixed rail unit and the moving rail unit are positioned so as to face each other with respect to the guide roller is inserted into the guide groove, respectively, characterized in that the camera module for a mobile terminal.
  3. 청구항 1에 있어서,The method according to claim 1,
    상기 가이드롤러는 상기 렌즈의 광축방향을 따라 상하로 배치되는 제1 가이드롤러와 제2 가이드롤러를 포함하여 이루어지고,The guide roller comprises a first guide roller and a second guide roller disposed vertically along the optical axis direction of the lens,
    상기 제1 가이드롤러와 제2 가이드롤러 사이에는 볼가이드가 배치되며,A ball guide is disposed between the first guide roller and the second guide roller,
    상기 볼가이드는 상부가 상기 제1 가이드롤러에 형성된 안내홈에 삽입되고 하부가 상기 제2 가이드롤러에 형성된 안내홈에 삽입되어 상기 제1 가이드롤러 및 제2 가이드롤러의 회전방향과 반대방향으로 회전하는 것을 특징으로 하는 휴대단말기용 카메라 모듈.The ball guide is inserted into the guide groove formed in the first guide roller and the lower portion is inserted into the guide groove formed in the second guide roller and rotated in a direction opposite to the rotation direction of the first guide roller and the second guide roller. Camera module for a mobile terminal, characterized in that.
  4. 청구항 3에 있어서,The method according to claim 3,
    상기 볼가이드는 반지름이 상기 안내홈의 깊이보다 길고 지름이 상기 고정레일부와 이동레일부 사이의 거리보다 짧은 것을 특징으로 하는 휴대단말기용 카메라 모듈.The ball guide is a camera module for a mobile terminal, characterized in that the radius is longer than the depth of the guide groove and the diameter is shorter than the distance between the fixed rail and the moving rail.
  5. 청구항 3에 있어서,The method according to claim 3,
    상기 가이드롤러는 제3 가이드롤러를 더 포함하여 이루어지며,The guide roller further comprises a third guide roller,
    상기 고정레일부는 상기 구동부를 중심으로 양측에 각각 형성되고,The fixed rail parts are respectively formed on both sides of the driving part,
    상기 이동레일부는 상기 구동부를 중심으로 양측에 각각 형성되며,The moving rails are formed on both sides of the driving unit, respectively.
    상기 제1 가이드롤러와 제2 가이드롤러는 상기 구동부를 중심으로 어느 일측에 형성된 고정레일부와 이동레일부 사이에 위치하고,The first guide roller and the second guide roller are located between the fixed rail and the moving rail formed on any one side of the driving unit,
    상기 제3 가이드롤러는 상기 구동부를 중심으로 다른 일측에 형성된 고정레일부와 이동레일부 사이에 위치하는 것을 특징으로 하는 휴대단말기용 카메라 모듈.The third guide roller is a camera module for a mobile terminal, characterized in that located between the fixed rail portion and the moving rail formed on the other side with respect to the drive unit.
  6. 청구항 1에 있어서,The method according to claim 1,
    상기 고정부와 이동부 사이에 배치되어 상기 이동부의 이동을 안내하는 볼가이드를 더 포함하는 것을 특징으로 하는 휴대단말기용 카메라 모듈.And a ball guide disposed between the fixed part and the moving part to guide the movement of the moving part.
  7. 청구항 6에 있어서,The method according to claim 6,
    상기 고정부에는 상기 렌즈의 광축방향과 나란한 고정레일부가 형성되고,The fixing portion is provided with a fixing rail portion parallel to the optical axis direction of the lens,
    상기 이동부에는 상기 렌즈의 광축방향과 나란한 이동레일부가 형성되며,The moving part is provided with a moving rail part parallel to the optical axis direction of the lens,
    상기 고정레일부와 이동레일부는 상기 가이드롤러를 중심으로 서로 마주하도록 위치하여 각각 상기 안내홈에 삽입되고,The fixed rail part and the moving rail part are positioned to face each other with respect to the guide roller and are respectively inserted into the guide grooves.
    상기 고정레일부와 이동레일부는 상기 구동부를 중심으로 어느 일측에 형성되며,The fixed rail part and the moving rail part are formed on any one side of the driving part,
    상기 볼가이드는 상기 구동부를 중심으로 다른 일측에 배치되고,The ball guide is disposed on the other side of the driving unit,
    상기 고정부와 이동부 중 적어도 어느 하나에는 상기 렌즈의 광축방향과 나란한 레일홈이 형성되어 상기 볼가이드가 삽입되는 것을 특징으로 하는 휴대단말기용 카메라 모듈.At least one of the fixing part and the moving part is formed with a rail groove parallel to the optical axis direction of the lens is a camera module for a mobile terminal, characterized in that the ball guide is inserted.
  8. 청구항 6에 있어서,The method according to claim 6,
    상기 볼가이드는 상기 렌즈의 광축방향을 따라 상하로 배치되는 제1 볼가이드, 제2 볼가이드 및 제3 볼가이드로 이루어지고,The ball guide is composed of a first ball guide, a second ball guide and a third ball guide disposed up and down along the optical axis direction of the lens,
    상기 제3 볼가이드는 상기 제1 볼가이드와 제2 볼가이드 사이에 위치하며,The third ball guide is located between the first ball guide and the second ball guide,
    상기 제3 볼가이드의 지름은 상기 제1 볼가이드 및 제2 볼가이드의 지름보다 짧은 것을 특징으로 하는 휴대단말기용 카메라 모듈.The diameter of the third ball guide is a camera module for a mobile terminal, characterized in that shorter than the diameter of the first ball guide and the second ball guide.
PCT/KR2017/005517 2016-07-14 2017-05-26 Portable terminal camera module WO2018012733A1 (en)

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KR1020160089258A KR101889835B1 (en) 2016-07-14 2016-07-14 Camera module for portable device
KR1020160089249A KR101779817B1 (en) 2016-07-14 2016-07-14 Camera module for portable device
KR10-2016-0089249 2016-07-14

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