KR20110060620A - Camera module - Google Patents

Camera module Download PDF

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Publication number
KR20110060620A
KR20110060620A KR1020090117249A KR20090117249A KR20110060620A KR 20110060620 A KR20110060620 A KR 20110060620A KR 1020090117249 A KR1020090117249 A KR 1020090117249A KR 20090117249 A KR20090117249 A KR 20090117249A KR 20110060620 A KR20110060620 A KR 20110060620A
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KR
South Korea
Prior art keywords
lens
lens unit
unit
camera module
housing
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KR1020090117249A
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Korean (ko)
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KR101061249B1 (en
Inventor
이중석
박재혁
황정욱
고현필
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삼성전기주식회사
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Priority to KR1020090117249A priority Critical patent/KR101061249B1/en
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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
    • G03B13/36—Autofocus systems
    • 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
    • G02B7/08—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted to co-operate with a remote control mechanism
    • 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
    • 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
    • G03B30/00—Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles
    • 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
    • G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G03B2205/0053—Driving means for the movement of one or more optical element
    • G03B2205/0061—Driving means for the movement of one or more optical element using piezoelectric actuators
    • 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
    • G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G03B2205/0053—Driving means for the movement of one or more optical element
    • G03B2205/0069—Driving means for the movement of one or more optical element using electromagnetic actuators, e.g. voice coils

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

Abstract

PURPOSE: A camera module is provided to make an AF(Auto Focusing) structure slim through the reduction of the moving distance of a lens barrel required for focusing adjustment. CONSTITUTION: A hollow part(12) is formed in a housing(10). A first lens part(20) is mounted to the hollow part of the housing. A lens barrel(30) is arranged in one side of the first lens part. The lens barrel supports a second lens part(32). A driving part(40) moves the lens barrel along an optical axis. An imaging part(50) is arranged in the other side of the first lens part. The imaging unit picks up receiving light.

Description

카메라 모듈{camera module}Camera module

본 발명은 카메라 모듈에 관한 것이다.The present invention relates to a camera module.

휴대폰, PDA, 휴대용 PC 등과 같은 휴대 통신단말기는 최근 문자 또는 음성 데이터를 전송하는 것뿐만 아니라 사진촬영과 화상 데이터 전송까지 수행하는 것이 일반화되어 가고 있다. 이러한 추세에 부응하여, 사진을 촬영하고 화상 데이터 전송, 화상 채팅을 할 수 있기 위해서 최근에 휴대 통신단말기에 카메라 모듈이 기본적으로 설치되고 있다.BACKGROUND OF THE INVENTION In recent years, portable communication terminals such as mobile phones, PDAs, portable PCs, and the like, have not only transmitted text or voice data but also taking pictures and transmitting image data. In response to this trend, in order to be able to take pictures, transfer image data and video chat, a camera module is basically installed in a portable communication terminal recently.

이러한 카메라　모듈은　점차 부가기능을 탑재하는 고사양의 형태로 변화하고 있어서 오토포커스 기능은 필수가 되어 가고 있는데, 종래의 오토포커스 구조는 카메라모듈의 슬림화에 장애가 되고 있다.Such a camera module is changing to a high specification type equipped with an incremental difference adding function, and thus an auto focus function is required. However, a conventional auto focus structure is an obstacle to slimming of a camera module.

또한, 카메라 화질의 고화소화 경향에 따라 이물질에 대한 관리가 중요한 문제로 대두되고 있다.In addition, the management of the foreign matter has emerged as an important problem due to the tendency of high pixel quality of the camera.

본 발명은 슬림화에 적합한 오토포커스 구조를 가지는 카메라 모듈을 제공하는 것이다.The present invention provides a camera module having an autofocus structure suitable for slimming.

또한, 본 발명은 이물질에 의한 영향을 최소화하는 카메라 모듈을 제공하는 것이다.In addition, the present invention is to provide a camera module that minimizes the influence of foreign matter.

본 발명의 일 측면에 따르면, 중공부가 형성된 하우징, 상기 하우징의 중공부에 장착된 제1렌즈부, 상기 제1렌즈부의 일측에 배치되어 있으며, 제2렌즈부를 지지하고 있는 렌즈배럴, 상기 렌즈배럴을 광축을 따라 이동시키는 구동부, 상기 제1렌즈부의 타측에 배치되어 있으며, 입사되는 빛을 결상하는 결상부를 포함하는 카메라 모듈이 제공된다.According to an aspect of the present invention, a housing having a hollow portion, a first lens portion mounted on the hollow portion of the housing, a lens barrel disposed on one side of the first lens portion and supporting a second lens portion, the lens barrel Is provided on the other side of the drive unit for moving the optical axis, the first lens unit, and a camera module including an imaging unit for forming the incident light.

상기 제1렌즈부는, 상기 제1렌즈부를 기준으로, 상기 하우징의 중공부의 일측과 타측을 차단할 수 있다.The first lens unit may block one side and the other side of the hollow part of the housing based on the first lens unit.

상기 하우징 및 상기 렌즈배럴을 커버하고 있으며, 상기 제2렌즈부를 노출시키는 개구부가 형성된 케이스, 상기 케이스의 개구부를 커버하는 적외선 필터를 더 포함할 수 있다.The display device may further include a case covering the housing and the lens barrel, the case having an opening exposing the second lens unit, and an infrared filter covering the opening of the case.

상기 제1렌즈부 및 상기 제2렌즈부 중 적어도 어느 하나는 복수의 렌즈를 포함할 수 있다.At least one of the first lens unit and the second lens unit may include a plurality of lenses.

상기 결상부는 이미지센서를 포함할 수 있다.The imaging unit may include an image sensor.

상기 구동부는 압전 액추에이터(Piezo actuator), 보이스 코일모터(Voice coil motor) 및 스텝모터(Step motor) 중 적어도 어느 하나를 포함할 수 있다.The driving unit may include at least one of a piezo actuator, a voice coil motor, and a step motor.

본 발명에 따르면, 초점 조절에 필요한 렌즈배럴의 이동거리를 단축시켜, 오토포커스 구조를 슬림화할 수 있다. According to the present invention, it is possible to shorten the moving distance of the lens barrel required for focusing and to make the autofocus structure slim.

또한, 침투한 이물질이 이미지 결상에 미치는 영향을 최소화할 수 있다.In addition, it is possible to minimize the effect of the foreign matter penetrating the image image.

이하에서 본 발명의 실시예를 첨부도면을 참조하여 상세하게 설명한다. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명의 일 실시예에 따른 카메라 모듈을 나타낸 단면도이다.1 is a cross-sectional view showing a camera module according to an embodiment of the present invention.

본 발명의 일 실시예에 따른 카메라 모듈은 하우징(10), 제1렌즈부(20), 제2렌즈부(32)를 구비한 렌즈배럴(30), 구동부(40) 및 결상부(50)를 포함한다.The camera module according to an embodiment of the present invention includes a lens barrel 30 having a housing 10, a first lens unit 20, a second lens unit 32, a driver 40, and an imaging unit 50. It includes.

하우징(10)은 후술한 제1렌즈부(20) 및 렌즈배럴(30)이 장착되는 공간을 형성하는 부분으로, 제1렌즈부(20) 및 렌즈배럴(30)을 수용하기 위하여 하우징(10)에는 중공부(12)가 형성된다.The housing 10 is a portion that forms a space in which the first lens unit 20 and the lens barrel 30 are to be described later. The housing 10 is configured to accommodate the first lens unit 20 and the lens barrel 30. ), The hollow part 12 is formed.

제1렌즈부(20)는 후술할 제2렌즈부(32)와 더불어 카메라 모듈에 입사된 빛 을 후술할 결상부(50)로 모아주는 부분이다. 특히, 본 실시예의 제1렌즈부(20)는 하우징(10) 중공부(12)에 결합됨으로써 제2렌즈부(32)와의 거리조절이 가능하여 오토포커스 구조를 슬림화시킬 수 있는 것을 특징으로 한다. 구체적 내용은 후술한다.The first lens unit 20 collects the light incident on the camera module together with the second lens unit 32 to be described later to the image forming unit 50 to be described later. In particular, the first lens unit 20 of the present embodiment is coupled to the hollow part 12 of the housing 10 to adjust the distance to the second lens unit 32, thereby reducing the autofocus structure. . Details will be described later.

한편, 제1렌즈부(20)는 카메라 모듈에 침투한 이물질이 후술할 결상부(50)에 근접하는 것을 방지할 수 있다. 이를 위해, 제1렌즈부(20)를 기준으로 하우징(10)의 중공부(12)의 일측과 타측이 차단되도록, 하우징(10)의 중공부(12)에 제1렌즈부(20)가 설치될 수 있다. 이에 따라, 카메라 모듈에 침투한 이물질이 제1렌즈부(20)에 의해 차단되어 결상부(50)에 접근할 수 없게 된다. 따라서, 침투한 이물질이 이미지 결상에 미치는 영향을 최소화할 수 있다.On the other hand, the first lens unit 20 can prevent the foreign matter penetrating the camera module close to the imaging unit 50 to be described later. To this end, the first lens unit 20 is disposed in the hollow part 12 of the housing 10 so that one side and the other side of the hollow part 12 of the housing 10 are blocked based on the first lens part 20. Can be installed. As a result, foreign matter penetrating the camera module is blocked by the first lens unit 20, thereby preventing access to the image forming unit 50. Therefore, the influence of the penetrating foreign matter on the image can be minimized.

이 때, 제1렌즈부(20)는 복수의 렌즈를 포함하는 렌즈군으로 형성될 수 있다.In this case, the first lens unit 20 may be formed of a lens group including a plurality of lenses.

렌즈배럴(30)은 후술할 결상부(50)에 빛을 입사시키는 제2렌즈부(32)를 지지하는 부분으로, 결상부(50)에 초점을 맞추기 위하여 광축을 따라 이동이 가능하게 형성된다. 이 때, 제2렌즈부(32)는 복수의 렌즈를 포함하는 렌즈군으로 형성될 수 있다.The lens barrel 30 is a portion for supporting the second lens unit 32 for injecting light into the imaging unit 50, which will be described later, and is formed to be movable along the optical axis to focus the imaging unit 50. . In this case, the second lens unit 32 may be formed of a lens group including a plurality of lenses.

특히, 본 실시예의 렌즈배럴(30)은 하우징(10)에 결합된 제1렌즈부(20)에 대하여 제2렌즈부(32)의 거리를 조절하는 역할을 한다. 즉, 렌즈 간의 거리를 조절함으로써 초점거리를 조절할 수 있다. 이에 따라, 렌즈 전체를 이동시켜 초점거리 를 조절할 때보다, 적은 거리를 이동하고도 초점거리를 맞출 수 있다. 따라서, 초점 조절에 필요한 렌즈배럴(30)의 이동거리가 단축되어, 오토포커스 구조가 슬림화될 수 있다.In particular, the lens barrel 30 of the present embodiment serves to adjust the distance of the second lens unit 32 with respect to the first lens unit 20 coupled to the housing 10. That is, the focal length can be adjusted by adjusting the distance between the lenses. Accordingly, the focal length can be adjusted even by moving a smaller distance than when adjusting the focal length by moving the entire lens. Therefore, the moving distance of the lens barrel 30 necessary for focusing is shortened, so that the autofocus structure can be slimmed.

구동부(40)는 초점조절을 위해 렌즈배럴(30)을 광축을 따라 이동시키는 부분이다.The driving unit 40 is a part for moving the lens barrel 30 along the optical axis to adjust the focus.

본 실시예에서는 렌즈배럴(30)의 측면에서 렌즈배럴(30)을 밀어서 이송하는 압전 액추에이터(Piezo actuator)가 구동부(40)로 사용된다. 한편, 구동부(40)로는 보이스 코일모터(Voice coil motor) 및 스텝모터(Step motor) 등과 같은 공지의 다양한 액추에이터가 사용될 수 있다.In this embodiment, a piezoelectric actuator (Piezo actuator) for pushing and transferring the lens barrel 30 from the side of the lens barrel 30 is used as the drive unit 40. Meanwhile, as the driving unit 40, various known actuators such as a voice coil motor and a step motor may be used.

결상부(50)는 제1렌즈부(20) 및 제2렌즈부(32)를 통하여 입사되는 빛이 결상되도록 이미지 결상영역을 구비하는 촬상소자이다. 입사된 빛의 결상을 위해 본 실시예의 결상부(50)는 제1렌즈의 타측에 배치되어 있다. The imaging unit 50 is an imaging device having an image imaging region to form light incident through the first lens unit 20 and the second lens unit 32. In order to form incident light, the imaging unit 50 of the present exemplary embodiment is disposed on the other side of the first lens.

본 실시예의 결상부(50)로는 입사된 빛을 전기적 신호로 바꾸는 이미지센서가 사용될 수 있다.As the image forming unit 50 of the present embodiment, an image sensor for converting incident light into an electrical signal may be used.

한편, 본 실시예에 따른 카메라 모듈은 이물질의 유입을 효과적으로 차단하기 위하여 하우징(10) 및 렌즈배럴(30)을 커버하고 있으면서, 빛의 유입을 위해서 제2렌즈부(32)를 노출시키는 개구부(62)가 형성된 케이스(60)를 구비할 수 있다. On the other hand, the camera module according to the embodiment covers the housing 10 and the lens barrel 30 in order to effectively block the inflow of foreign matter, while opening the opening (2) to expose the second lens unit 32 for the inflow of light ( 62 may be provided with a case 60 formed therein.

이 때, 케이스(60)의 개구부(62)를 커버하는 적외선 필터(70)가 추가로 설치될 수 있다. 종래에는 적외선 필터(70)가 결상부(50)에 인접하여 배치되었으나, 본 실시예의 카메라 모듈에서는 적외선 필터(70)가 케이스(60)의 개구부(62)에 설치됨으로써 이물질의 유입을 방지하는 역할을 겸할 수 있다.In this case, an infrared filter 70 covering the opening 62 of the case 60 may be additionally installed. Conventionally, the infrared filter 70 is disposed adjacent to the image forming unit 50, but in the camera module of the present embodiment, the infrared filter 70 is installed in the opening 62 of the case 60 to prevent the inflow of foreign substances. Can also serve as

상기에서는 본 발명의 실시예를 참조하여 설명하였지만, 해당 기술 분야에서 통상의 지식을 가진 자라면 하기의 특허 청구의 범위에 기재된 본 발명의 사상 및 영역으로부터 벗어나지 않는 범위 내에서 본 발명을 다양하게 수정 및 변경시킬 수 있음을 이해할 수 있을 것이다.Although the above has been described with reference to embodiments of the present invention, those skilled in the art may variously modify the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. And can be changed.

전술한 실시예 외의 많은 실시예들이 본 발명의 특허청구범위 내에 존재한다.Many embodiments other than the above-described embodiments are within the scope of the claims of the present invention.

도 1은 본 발명의 일 실시예에 따른 카메라 모듈을 나타낸 단면도.1 is a cross-sectional view showing a camera module according to an embodiment of the present invention.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

10: 하우징10: housing

12: 중공부12: hollow part

20: 제1렌즈부20: first lens unit

30: 렌즈배럴30: lens barrel

32: 제2렌즈부32: second lens unit

40: 구동부40: drive unit

50: 결상부50: imaging section

60: 케이스60: case

70: 적외선 필터70: infrared filter

Claims (6)

중공부가 형성된 하우징;A housing in which the hollow part is formed; 상기 하우징의 중공부에 장착된 제1렌즈부;A first lens unit mounted to the hollow part of the housing; 상기 제1렌즈부의 일측에 배치되어 있으며, 제2렌즈부를 지지하고 있는 렌즈배럴;A lens barrel disposed on one side of the first lens unit and supporting the second lens unit; 상기 렌즈배럴을 광축을 따라 이동시키는 구동부; 및A driving unit for moving the lens barrel along an optical axis; And 상기 제1렌즈부의 타측에 배치되어 있으며, 입사되는 빛을 결상하는 결상부를 포함하는 카메라 모듈.The camera module is disposed on the other side of the first lens unit, and comprises an imaging unit for forming the incident light. 제1항에 있어서,The method of claim 1, 상기 제1렌즈부는, The first lens unit, 상기 제1렌즈부를 기준으로, 상기 하우징의 중공부의 일측과 타측을 차단하는 것을 특징으로 하는 카메라 모듈.The camera module, characterized in that to block one side and the other side of the hollow portion of the housing based on the first lens unit. 제1항에 있어서,The method of claim 1, 상기 하우징 및 상기 렌즈배럴을 커버하고 있으며, 상기 제2렌즈부를 노출시키는 개구부가 형성된 케이스; 및A case covering the housing and the lens barrel and having an opening exposing the second lens portion; And 상기 케이스의 개구부를 커버하는 적외선 필터를 더 포함하는 카메라 모듈.And an infrared filter covering the opening of the case. 제1항에 있어서,The method of claim 1, 상기 제1렌즈부 및 상기 제2렌즈부 중 적어도 어느 하나는 복수의 렌즈를 포함하는 것을 특징으로 하는 카메라 모듈.At least one of the first lens unit and the second lens unit comprises a plurality of lenses. 제1항에 있어서,The method of claim 1, 상기 결상부는 이미지센서를 포함하는 것을 특징으로 하는 카메라 모듈.The imaging unit camera module, characterized in that it comprises an image sensor. 제1항에 있어서,The method of claim 1, 상기 구동부는 압전 액추에이터(Piezo actuator), 보이스 코일모터(Voice coil motor) 및 스텝모터(Step motor) 중 적어도 어느 하나를 포함하는 것을 특징으로 하는 카메라 모듈.The driving unit includes at least one of a piezo actuator (Piezo actuator), a voice coil motor (Step Voice) and a step motor (Step motor).
KR1020090117249A 2009-11-30 2009-11-30 Camera module KR101061249B1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105487191A (en) * 2015-12-29 2016-04-13 宁波舜宇光电信息有限公司 Camera module group lens, camera module group, assembly method of camera module group lens and assembly method of camera module group
CN107483795A (en) * 2017-09-22 2017-12-15 努比亚技术有限公司 A kind of camera structure and mobile terminal
US11835784B2 (en) 2015-12-21 2023-12-05 Ningbo Sunny Opotech Co., Ltd. Adjustable optical lens and camera module and aligning method thereof
US12105350B2 (en) 2015-10-30 2024-10-01 Ningbo Sunny Opotech Co., Ltd. Adjustable optical lens and camera module and manufacturing method and applications thereof

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100562720B1 (en) * 2004-05-19 2006-03-20 주식회사 포엠 Camera device for communication machine and communication machine having the same
KR100746714B1 (en) 2005-01-17 2007-08-06 동인하이텍주식회사 Small camera device for communication machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12105350B2 (en) 2015-10-30 2024-10-01 Ningbo Sunny Opotech Co., Ltd. Adjustable optical lens and camera module and manufacturing method and applications thereof
US11835784B2 (en) 2015-12-21 2023-12-05 Ningbo Sunny Opotech Co., Ltd. Adjustable optical lens and camera module and aligning method thereof
CN105487191A (en) * 2015-12-29 2016-04-13 宁波舜宇光电信息有限公司 Camera module group lens, camera module group, assembly method of camera module group lens and assembly method of camera module group
CN107483795A (en) * 2017-09-22 2017-12-15 努比亚技术有限公司 A kind of camera structure and mobile terminal

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