WO2005101083A1 - カメラモジュール - Google Patents
カメラモジュール Download PDFInfo
- Publication number
- WO2005101083A1 WO2005101083A1 PCT/JP2005/007128 JP2005007128W WO2005101083A1 WO 2005101083 A1 WO2005101083 A1 WO 2005101083A1 JP 2005007128 W JP2005007128 W JP 2005007128W WO 2005101083 A1 WO2005101083 A1 WO 2005101083A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lens
- elastic body
- camera module
- coil
- spring
- Prior art date
Links
Classifications
-
- 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
-
- 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
- G02B7/026—Mountings, adjusting means, or light-tight connections, for optical elements for lenses using retaining rings or springs
-
- 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
-
- 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
Definitions
- the present invention relates to a camera module having a small size, a small thickness, low power consumption, and an autofocus function.
- FIG. 5A is a plan view showing a configuration of a lens module according to Embodiment 1 of the present invention.
- FIG. 13A is a plan view showing a configuration of a lens module according to Embodiment 5 of the present invention.
- FIG. 16 is a plan view showing a configuration of another upper spring (lower spring) according to Embodiment 6 of the present invention.
- FIG. 17B is a sectional view of the lens module according to Embodiment 7 of the present invention.
- the lens includes a plurality of lenses, and the first elastic body and the second elastic body are respectively connected to the outer side connected to the fixing portion. Having an annular portion, an inner annular portion disposed inside the outer annular portion, and at least one arm connecting the outer annular portion and the inner annular portion!
- the inner annular portion is supported at a substantially central position of the lens portion. Therefore, the camera module does not spread in the radial direction of the lens module, and can be reduced in size. Also, when the relative distance between the lens and the image sensor is changed, little friction occurs. This makes it possible to provide a camera module that is thin, has low power consumption, and has a focus control function.
- the permanent magnet portion and the coil are arranged inside the yoke and between the first elastic body and the second elastic body. Have been. Therefore, the camera module can be reduced in size and thickness without expanding in the radial direction and the optical axis direction of the lens.
- the lens unit 10 has a lens 11 and a lens holder 12.
- the lens 11 is formed by subjecting glass or resin to injection molding or cutting, and serves to bend light. It is desirable that the lens 11 be made of a material having a high refractive index and a low dispersion.
- the lens holder 12 is manufactured by injection molding using a resin or the like.
- the lens holder 12 is substantially cylindrical and has an opening 12b having a constant diameter and an opening 12a having a tapered shape and a gradually increasing diameter.
- the lens 11 is disposed in the opening 12b by press fitting or the like.
- the opening 12a is provided on a side far from the image sensor 4, and the opening 12b is provided on the image sensor 4 side. The incident light is restricted by the opening 12a, enters the lens 11, passes through the lens 11, and is emitted from the opening 12b to the image sensor 4.
- the connecting portion 40 has an upper spring 41a and a lower spring 41b, and an upper insulating sheet 45a and a lower insulating sheet 45b provided at upper and lower ends of the permanent magnet portion 31, respectively.
- the upper spring 41a is made of a material such as a metal having high conductivity and being resistant to metal fatigue, and is formed by punching a plate-shaped member by a press or the like. The shape of the upper spring 41a will be described later.
- the inner peripheral side of the upper spring 41a is connected to the upper part of the movable base holder 21, and the outer peripheral side of the upper spring 41a is connected to an upper insulating sheet 45a provided on the upper end of the permanent magnet unit 31.
- the lower spring 41b has the same configuration as the upper spring 41a.
- the driving element 6 since the driving element 6 has a large output current, the required power changes greatly, and the current supplied to the driving element 6 also fluctuates sharply. Therefore, for example, a voltage fluctuation occurs in the drive element 6 due to the influence of the inductance component and the resistance component of the power supply line and the response delay of the power supply.
- the image sensor 4 and the control element 5 can be affected by the power supply voltage due to the fluctuation of the supply current to the drive element 6. There is. As a result, the imaging element 4 and the control element 5 malfunction.
- the camera module 100 is provided with two power supply lines, a calculation power supply line 7a and a drive power supply line 7c.
- the movable base 20 has a movable base holder 21, an upper coil 22a and a lower coil 22b.
- the movable base holder 21 is manufactured by forming resin or the like into a substantially cylindrical shape by injection molding or the like. Inside the movable base holder 21, the lens unit 10 is arranged by press-fitting or the like.
- the movable base holder 21 has three annular projections 21a, 21b and 21c formed on the outer peripheral portion.
- a groove-shaped bobbin portion 21d is formed by the protrusion 21a, the protrusion 21b, and the outer peripheral portion of the movable base holder 21.
- the fixed base 30 has a permanent magnet part 31 and a yoke 32.
- the permanent magnet section 31 is composed of four permanent magnets 31a, 31b, 31c and 31d, for example, as shown in FIGS. 5A and 5C.
- FIG. 6 is a plan view of the lens module according to Embodiment 1 of the present invention, from which a connecting portion has been removed. This will be further described below with reference to FIG.
- the arrangement of the four permanent magnets 31a, 31b, 31c and 31d becomes easier.
- These permanent magnets 31a, 31b, 31c and 31d are arranged such that a magnetic flux is generated in the radial direction of the lens 11.
- the shape of the upper spring 41a will be described later.
- the inner peripheral side of the upper spring 41a is connected to the upper part of the movable base holder 21, and the outer peripheral side of the upper spring 41a is connected to an insulating sheet 45a provided at the upper end of the permanent magnet unit 31.
- the inner peripheral side of the upper spring 41a is connected to the upper part of the movable base holder 21, and the outer peripheral side of the upper spring 41a is connected to the upper insulating sheet 45a provided on the upper end of the permanent magnet unit 31.
- the lower spring 41b captures an image from the center of the lens 11 in the optical axis direction. It is arranged closer to the element 4.
- the inner peripheral side of the lower spring 4 lb is connected to the lower part of the movable base holder 21, and the outer peripheral side of the lower spring 41b is connected to a lower insulating sheet 45b provided at the lower end of the permanent magnet unit 31.
- the connecting section 40 connects the lens section 10 and the fixed base 30 via the movable base holder 21.
- FIG. 8 is a perspective view showing an arrangement of the upper spring and the lower spring according to Embodiment 1 of the present invention.
- FIG. 8 is a perspective view showing only the upper spring 41a and the lower spring 41b in the lens module 1 of the first embodiment.
- the lower spring 41b translates the upper spring 41a in the direction of the optical axis of the lens 11 to the position of the lower spring 41b, and moves about the axis 51 that is perpendicular to the optical axis of the lens 11. It is the same arrangement as the one that is turned 180 °.
- FIG. 9A is a plan view showing a configuration of a lens module according to Embodiment 2 of the present invention
- FIG. 9B is a cross-sectional view of the lens module according to Embodiment 2 of the present invention
- FIG. 9 is a bottom view of the lens module according to Embodiment 2.
- FIG. 9B is a sectional view taken along line 9B-9B in FIGS. 9A and 9C.
- the movable base 221 has an opening 223 at a lower portion thereof.
- the center of the coil part 222 is located below the center of the lens part 210, so that the small supporting part 3 (see FIG. 1)
- the lower part of the opening 223 can be arranged up to the vicinity of the imaging device 4, and the camera module can be manufactured at low cost.
- the fixed base 230 has a permanent magnet part 231 and a yoke 232.
- the permanent magnet section 231 is composed of four permanent magnets arranged so as to face each other with the four coils of the coil section 222, and is arranged so that magnetic flux is generated in the radial direction of the lens 211.
- Each permanent magnet is formed by cutting a surface-treated cylindrical neodymium sintered magnet by an angle slightly smaller than 90 ° (about 80 °). These permanent magnets are magnetized so that the inner side in the radial direction of the lens 211 is the N pole, and are arranged at the upper part.
- the magnet 211 is magnetized so that the inner side in the radial direction of the lens 211 becomes the S pole, and is arranged at the bottom.
- the yoke 232 is made of a ferromagnetic material such as iron whose surface has been plated and formed in a cylindrical shape.
- the inner periphery of the yoke 232 has four permanent magnets (permanent magnet parts 231) including permanent magnets 231a and 231c. It has the same curvature as the outer circumference of.
- Four permanent magnets (permanent magnet portions 231) including permanent magnets 231a and 231c are fixed inside the yoke 232, and are disposed above the support portion 3 (see FIG. 1). That is, the yoke 232 is arranged to be connected to the outside of the permanent magnet portion 231 in the magnetization direction.
- the arrangement of the upper spring 341a and the lower spring 341b is similar to that of the first embodiment.
- the lower spring 341b moves the upper spring 341a in the optical axis direction of the lens 11 to the installation position of the lower spring 341b.
- the two arms of the upper spring 341a and the lower spring 341b have the same arrangement as that obtained by inverting 180 ° about the axis perpendicular to the optical axis of the lens 11, the first embodiment differs from the first embodiment. It has a similar effect.
- the camera module according to the fourth embodiment has almost the same configuration as the camera module according to the first embodiment, and is different in the arrangement of the upper spring 41a and the lower spring 41b.
- the center axes of the upper spring 41a and the lower spring 41b are the same, and are arranged at positions shifted from each other in phase. That is, the upper spring 41a and the lower spring 41b have the same shape as each other, and are arranged so that they are not symmetric but have different phases.
- Other members, configurations, and operations are the same as those of the camera module according to the first embodiment, and a description thereof will not be repeated.
- the lens section 410 has a lens provided with four lenses 411a, 411b, 411c, and 41Id and a lens holder 412!
- the lenses 411a, 411b, 411c and 41Id are all of the same shape, are made of glass or plastic, and serve to bend light.
- the lenses 411a, 411b, 411c and 41Id are made of glass such as glass or resin having a high refractive index and low dispersion. In the case where the glass or the resin is injection-molded, a substantially rectangular parallelepiped in which four curved surfaces having substantially the same shape are formed on the upper surface and the lower surface, respectively, may be formed by cutting.
- the lens holder 412 is made of resin or the like.
- the camera module according to Embodiment 5 includes, for example, It is possible to perform length measurement and the like by stereo vision.
- one image sensor 4 is used, and a region is cut out by the control device 5, but a configuration using four image sensors may be adopted.
- four image sensors are arranged so as to substantially coincide with the centers of the respective light receiving surfaces of the four image sensors, with the respective optical axis center forces of the lenses 41 la, 411b, 411c, and 41 Id. Then, the subject images of the lenses 411a, 411b, 411c, and 41Id are received by the respective image sensors.
- the camera module according to Embodiment 6 can perform, for example, length measurement by stereo vision, in addition to the same processing as that of the camera module having one lens.
- the camera module according to the sixth embodiment uses one image sensor 4 and cuts out the area with the control device 5, it may have a configuration using four image sensors. Specifically, four image sensors are arranged so as to substantially coincide with the center of the light receiving surface of each of the lenses 51 la, 511b, 511c, and 51Id. Then, the subject images of the lenses 511a, 511b, 511c, and 5id may be received by the respective image sensors. By doing so, the same effect as in the fifth embodiment can be obtained.
- the number of arms and the number of lenses included in upper spring 541a and lower spring 54lb be the same.
- the upper spring 54 la and the lower spring 54 lb each have four arms, and the number of lenses 511a, 511b, 511c, and 51Id is approximately four.
- the upper spring 541a and the lower spring 541b can be arranged so that the arm does not block the light incident on the lenses 511a, 5 lb, 511c, and 5 lid.
- the camera module can be made thinner.
- FIG. 17A is a plan view showing a configuration of a lens module according to Embodiment 7 of the present invention
- FIG. 17B is a cross-sectional view of the lens module according to Embodiment 7 of the present invention
- FIG. FIG. 21 is a bottom view of the lens module according to Embodiment 7.
- 17B is a cross-sectional view taken along line 17B-17B in FIGS. 17A and 17C.
- the lens module 601 according to the seventh embodiment has a configuration in which a lens and a movable base holder are molded. That is, the configuration is such that the coil is provided on the outer periphery of the lens. Otherwise, the configuration is substantially the same as the lens module of the first embodiment. Therefore, in FIGS. 17A, 17B, and 17C, members having the same functions in FIGS. 5A, 5B, and 5C are denoted by the same reference numerals, and description thereof is omitted.
- the lens unit 610 includes a movable lens 615 and a lens holder 612.
- the movable lens 615 is formed by integrally molding a lens 611 and a movable base holder 621.
- the movable lens 615 is manufactured by subjecting glass or resin to injection molding or cutting. Further, since the movable lens 615 includes the lens 611, it is desirable that the movable lens 615 be made of a material having a high refractive index and a low dispersion.
- the upper electric wire 42a connecting the upper spring 41a and the driving element 6 is electrically connected to one end of each of the upper coil 622a and the lower coil 622b via the upper spring 41a and the upper electrode 626a.
- a lower wire 42b connecting the lower spring 41b and the driving element 6 is connected to the upper coil 622a and the lower coil 622b of the coil 622 via a spring 41b and a lower electrode 626b, respectively. It is electrically connected to the end.
- FIG. 19 is a plan view for explaining the arrangement of coils and permanent magnets in a lens module according to Embodiment 8 of the present invention. Specifically, FIG. 19 is a plan view of the lens module according to the eighth embodiment in which the upper spring and the upper insulating sheet have been removed.
- members having the same functions as the members shown in FIG. 5A are denoted by the same reference numerals, and description thereof will be omitted.
- FIGS. 5A, 5B, and 5C description will be made with reference to FIGS. 5A, 5B, and 5C.
- the amount of movement of the lens unit 10 and the movable base 20 is proportional to the Lorentz force, and the Lorentz force is [3inores 722a, 722b, 722c, and 722d. It is proportional to the voltage between line 42a and lower line 42b. Therefore, the control element 5 (see FIG. 1) controls the voltage between the upper wire 42a and the lower wire 42b by using the drive element 6 (see FIG. 1), so that the lens 11 and the image sensor 4 are connected. The relative distance can be controlled.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Lens Barrels (AREA)
- Studio Devices (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05730413A EP1698925A1 (en) | 2004-04-13 | 2005-04-13 | Camera module |
US10/580,926 US7590341B2 (en) | 2004-04-13 | 2005-04-13 | Camera module |
JP2006512350A JP4077497B2 (ja) | 2004-04-13 | 2005-04-13 | カメラモジュール |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-118211 | 2004-04-13 | ||
JP2004118211 | 2004-04-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005101083A1 true WO2005101083A1 (ja) | 2005-10-27 |
Family
ID=35150142
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/007128 WO2005101083A1 (ja) | 2004-04-13 | 2005-04-13 | カメラモジュール |
Country Status (5)
Country | Link |
---|---|
US (1) | US7590341B2 (ja) |
EP (1) | EP1698925A1 (ja) |
JP (1) | JP4077497B2 (ja) |
CN (1) | CN100432733C (ja) |
WO (1) | WO2005101083A1 (ja) |
Cited By (25)
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JP2007322540A (ja) * | 2006-05-30 | 2007-12-13 | Mitsumi Electric Co Ltd | カメラモジュール |
JP2008026619A (ja) * | 2006-07-21 | 2008-02-07 | Shicoh Eng Co Ltd | レンズ駆動装置 |
WO2008041469A1 (fr) * | 2006-10-03 | 2008-04-10 | Panasonic Corporation | Dispositif de formation d'image |
JP2008122470A (ja) * | 2006-11-08 | 2008-05-29 | Nidec Sankyo Corp | レンズ駆動装置、およびその製造方法 |
JP2008261937A (ja) * | 2007-04-10 | 2008-10-30 | Nidec Sankyo Corp | レンズ駆動装置 |
JP2008276143A (ja) * | 2007-05-07 | 2008-11-13 | Nidec Sankyo Corp | レンズ駆動装置 |
JP2008281863A (ja) * | 2007-05-11 | 2008-11-20 | Nidec Sankyo Corp | レンズ駆動装置 |
JP2009211076A (ja) * | 2008-02-29 | 2009-09-17 | Johnson Electric Sa | レンズ駆動装置 |
JP2009210724A (ja) * | 2008-03-03 | 2009-09-17 | Mitsumi Electric Co Ltd | レンズ駆動装置 |
JP2009251031A (ja) * | 2008-04-01 | 2009-10-29 | Mitsumi Electric Co Ltd | レンズ駆動装置 |
JP2009265675A (ja) * | 2008-04-28 | 2009-11-12 | Fuzhun Precision Industry (Shenzhen) Co Ltd | カメラ用自動焦点調節装置 |
US7932648B2 (en) * | 2005-12-02 | 2011-04-26 | Lg Innotek Co., Ltd. | Lens driving motor and elastic member of the same |
JP2012058758A (ja) * | 2004-08-05 | 2012-03-22 | Mitsumi Electric Co Ltd | レンズ駆動装置およびカメラ |
JP2012073648A (ja) * | 2011-12-27 | 2012-04-12 | Mitsumi Electric Co Ltd | レンズホルダ駆動装置 |
JP2012137789A (ja) * | 2012-04-04 | 2012-07-19 | Mitsumi Electric Co Ltd | カメラモジュール |
JP2012151954A (ja) * | 2011-01-18 | 2012-08-09 | Toshiba Mach Co Ltd | リニアモータ |
JP2013080062A (ja) * | 2011-10-03 | 2013-05-02 | Rohm Co Ltd | リニアアクチュエータの駆動回路および駆動方法ならびにそれらを用いたレンズモジュールおよび電子機器 |
US8536664B1 (en) * | 2007-04-16 | 2013-09-17 | DigitalOptics Corporation MEMS | MEMS device with integrated memory cells |
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JP2015132838A (ja) * | 2015-02-26 | 2015-07-23 | ミツミ電機株式会社 | カメラモジュールの製造方法 |
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JP4174542B2 (ja) * | 2005-05-24 | 2008-11-05 | 松下電器産業株式会社 | カメラモジュール |
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CN107222081B (zh) | 2010-07-12 | 2021-04-30 | Lg伊诺特有限公司 | 音圈电动机 |
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-
2005
- 2005-04-13 JP JP2006512350A patent/JP4077497B2/ja active Active
- 2005-04-13 US US10/580,926 patent/US7590341B2/en active Active
- 2005-04-13 EP EP05730413A patent/EP1698925A1/en not_active Withdrawn
- 2005-04-13 WO PCT/JP2005/007128 patent/WO2005101083A1/ja not_active Application Discontinuation
- 2005-04-13 CN CNB2005800024541A patent/CN100432733C/zh not_active Expired - Fee Related
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JP2012058758A (ja) * | 2004-08-05 | 2012-03-22 | Mitsumi Electric Co Ltd | レンズ駆動装置およびカメラ |
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US8629582B2 (en) | 2005-12-02 | 2014-01-14 | Lg Innotek Co., Ltd. | Lens driving motor and elastic member of the same |
JP2007322540A (ja) * | 2006-05-30 | 2007-12-13 | Mitsumi Electric Co Ltd | カメラモジュール |
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JP2014112264A (ja) * | 2006-06-30 | 2014-06-19 | New Shicoh Technology Co Ltd | レンズ駆動装置、カメラ及びカメラ付き携帯電話 |
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JP2008122470A (ja) * | 2006-11-08 | 2008-05-29 | Nidec Sankyo Corp | レンズ駆動装置、およびその製造方法 |
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JP2008276143A (ja) * | 2007-05-07 | 2008-11-13 | Nidec Sankyo Corp | レンズ駆動装置 |
JP2008281863A (ja) * | 2007-05-11 | 2008-11-20 | Nidec Sankyo Corp | レンズ駆動装置 |
JP2009211076A (ja) * | 2008-02-29 | 2009-09-17 | Johnson Electric Sa | レンズ駆動装置 |
JP2009210724A (ja) * | 2008-03-03 | 2009-09-17 | Mitsumi Electric Co Ltd | レンズ駆動装置 |
JP2009251031A (ja) * | 2008-04-01 | 2009-10-29 | Mitsumi Electric Co Ltd | レンズ駆動装置 |
JP2009265675A (ja) * | 2008-04-28 | 2009-11-12 | Fuzhun Precision Industry (Shenzhen) Co Ltd | カメラ用自動焦点調節装置 |
JP2012151954A (ja) * | 2011-01-18 | 2012-08-09 | Toshiba Mach Co Ltd | リニアモータ |
JP2013080062A (ja) * | 2011-10-03 | 2013-05-02 | Rohm Co Ltd | リニアアクチュエータの駆動回路および駆動方法ならびにそれらを用いたレンズモジュールおよび電子機器 |
JP2012073648A (ja) * | 2011-12-27 | 2012-04-12 | Mitsumi Electric Co Ltd | レンズホルダ駆動装置 |
JP2012137789A (ja) * | 2012-04-04 | 2012-07-19 | Mitsumi Electric Co Ltd | カメラモジュール |
JP2015092213A (ja) * | 2013-11-08 | 2015-05-14 | 惠州市大亜湾永昶電子工業有限公司 | レンズ駆動装置 |
JP2014078029A (ja) * | 2013-12-11 | 2014-05-01 | Mitsumi Electric Co Ltd | カメラモジュールの製造方法 |
JP2015132838A (ja) * | 2015-02-26 | 2015-07-23 | ミツミ電機株式会社 | カメラモジュールの製造方法 |
JP2017191318A (ja) * | 2016-04-08 | 2017-10-19 | 台湾東電化股▲ふん▼有限公司 | カメラモジュール |
US11656531B2 (en) | 2016-04-08 | 2023-05-23 | Tdk Taiwan Corp. | Camera module |
TWI698693B (zh) * | 2018-12-28 | 2020-07-11 | 大陽科技股份有限公司 | 鏡頭驅動模組及電子裝置 |
Also Published As
Publication number | Publication date |
---|---|
US20070110424A1 (en) | 2007-05-17 |
JPWO2005101083A1 (ja) | 2008-03-06 |
CN100432733C (zh) | 2008-11-12 |
EP1698925A1 (en) | 2006-09-06 |
JP4077497B2 (ja) | 2008-04-16 |
CN1910492A (zh) | 2007-02-07 |
US7590341B2 (en) | 2009-09-15 |
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