CN105589169A - Closed-loop AF automatic focusing lens driving device - Google Patents
Closed-loop AF automatic focusing lens driving device Download PDFInfo
- Publication number
- CN105589169A CN105589169A CN201610117448.0A CN201610117448A CN105589169A CN 105589169 A CN105589169 A CN 105589169A CN 201610117448 A CN201610117448 A CN 201610117448A CN 105589169 A CN105589169 A CN 105589169A
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- Prior art keywords
- holding tank
- wiring board
- magnet
- framework
- drive
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Classifications
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- 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
- G02B7/09—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
Abstract
The invention discloses a closed-loop AF automatic focusing lens driving device comprising a frame, two clamping slots, balls, a moving unit and a driving feedback unit; the moving unit comprises a lens supporting body, a driving magnet, and a feedback magnet; the driving feedback unit comprises a Hall element, a drive coil, and a circuit board; two clamping slots are formed between the lens supporting body and the frame; the two clamping slots are located at diagonal positions; the two clamping slots are loaded with balls therein; the circuit board has an integral forming structure and can be mounted on the frame through a slot-embedded structure. The beneficial effects of the driving device are: the device has simple structure, easy assembling, small moving frictional force, high displacement precision, and stable product quality.
Description
Technical field
The present invention relates to a kind of lens driver, particularly a kind of closed loop AF drives dress to focus lens automaticallyPut.
Background technology
Voice coil motor is that a kind of utilization is from magnetic in the magnetic field of permanent-magnet steel and the magnetic field of hot-wire coil conductor generationThe interaction of interpolar produces the device of regular motion, is widely used in mobile phone camera. Existing domesticThe lens driver that outer minisize pick-up head adopts adopts China Patent Publication No. CN1683946A institute public moreThe similar scheme of opening, this lens driver has two shell fragments, solid because of spring in mobile processSome oscillating characteristics, need just can stop on a fixing position, when response after certain stabilization timeBetween long, due to the relation of shell fragment, the precision of displacement is also poor; And this driving device structure complexity, zeroParts are more, and assembling is complicated, easily causes unstable product quality.
Summary of the invention
Object of the present invention is just to overcome above-mentioned deficiency, provides a kind of simple in structure, is easy to assembling, hasThe closed loop AF of the production lens driver of automatically focusing.
For achieving the above object, the present invention implements according to following technical scheme:
A kind of closed loop AF lens driver of automatically focusing, comprises framework, holding tank, ball, active unitWith drive feedback unit, described active unit comprises lens supports body, drive magnet and feedback magnet, described inDrive feedback unit comprises Hall element, drive coil and wiring board, and described lens supports body is placed in frameworkPortion, described drive magnet and feedback magnet are positioned over respectively on the diverse location of right flank of lens supports body,Described wiring board is placed in the right side of framework inside, and described wiring board inner side is relative with lens supports body right flank,Described drive coil and Hall element are placed in respectively the diverse location of wiring board inner side, the position of described drive coilPut corresponding with drive magnet, the position of described Hall element with feedback magnet corresponding, described lens supportsBetween body and framework, form two holding tanks, be respectively the first holding tank and the second holding tank, described the first folderHold groove and the second holding tank parallels with optical axis direction, described the second holding tank is positioned at drive magnet and feedback magneticBetween iron, described the first holding tank is positioned at the diagonal position of the second holding tank, described the first holding tank and secondBall is housed in holding tank.
Further, described framework is provided with groove structure, and described wiring board is provided with raised structures, described inWiring board can be installed on framework by raised structures and groove structure.
Further, described wiring board comprises FPC body and plastic support, and described wiring board isIntegrated formed structure.
Compared with prior art, beneficial effect of the present invention is: in two set holding tanks, ball is housed,Can make lens supports body move along the direction that is parallel to optical axis, compared with spring, adopt ball-type to moveMoving member can reduce frictional force, and ensures displacement accuracy; Two holding tanks are placed in to diagonal position, and this is excellentChange design and can make full use of space, for drive magnet reserves larger space; By the design of more optimizing,Original very complicated mechanism design number of parts is simplified to 8; Drive feedback unit adopted wiring board andPlastic support integral forming process, has avoided the follow-up laminating of assembling again, has simplified design of part, wiring boardDirectly snap into position with framework by draw-in groove embedded structure, reduced assembling difficulty, assembling is more prone to,The precision of product and the stability of product quality, uniformity are ensured. Of the present invention simple in structure, assembling is heldEasily, mobile frictional force is little, and displacement accuracy is high, constant product quality.
Brief description of the drawings
Fig. 1 is top view of the present invention;
Fig. 2 is frame structure schematic diagram of the present invention;
Fig. 3 is the structural representation of active unit of the present invention;
Fig. 4 is the structural representation of drive feedback of the present invention unit.
Detailed description of the invention
Below in conjunction with accompanying drawing and specific embodiment, the invention will be further described, this invention schematicallyEmbodiment and explanation are used for explaining the present invention, but not as a limitation of the invention.
The lens driver of automatically focusing of a kind of closed loop AF as Figure 1-4, comprise framework 1, holding tank,Ball, active unit and drive feedback unit, described active unit comprises lens supports body 2, drive magnet 4With feedback magnet 5, described drive feedback unit comprises Hall element 6, drive coil 7 and wiring board 8, instituteState lens supports body 2 and be placed in framework 1 inside, described drive magnet 4 and feedback magnet 5 are positioned over respectivelyOn the diverse location of the right flank of mirror supporter 2, described wiring board 8 is placed in the right side of framework 1 inside, instituteState wiring board 8 inner sides relative with lens supports body 2 right flanks, 6 points of described drive coil 7 and Hall elementsBe not placed in the diverse location of wiring board 8 inner sides, the position of described drive coil 7 is corresponding with drive magnet 4,The position of described Hall element 6 is corresponding with feedback magnet 5, between described lens supports body 2 and framework 1Form two holding tanks, be respectively the first holding tank 3 and the second holding tank 9, described the first holding tank 3 andTwo holding tanks 9 parallel with optical axis direction, and described the second holding tank 9 is positioned at drive magnet 4 and feedback magnet 5Between, described the first holding tank 3 is positioned at the diagonal position of the second holding tank 9, described the first holding tank 3 HesIn the second holding tank 9, ball is housed, described framework 1 is provided with groove structure 11, and described wiring board 8 arrangesHave raised structures 10, described raised structures 10 is embedded in groove structure 11, wiring board 8 and framework 1 because ofThis clamping, described wiring board 8 comprises FPC body and plastic support, described wiring board 8 is oneForming structure.
In set two holding tanks of the present invention, ball is housed, can makes lens supports body 2 along being parallel to lightThe direction of axle moves, and compared with spring, adopts ball-type mobile member can reduce frictional force, and protectsCard displacement accuracy; Two holding tanks are placed in to diagonal position, and this optimal design can make full use of space, forDrive magnet 4 reserves larger space; By the design of more optimizing, by original very complicated mechanism design zeroNumber of packages amount is simplified to 8; Drive feedback unit has adopted wiring board and plastic support integral forming process,Avoided the follow-up laminating of assembling again, simplified design of part, wiring board and framework are straight by draw-in groove embedded structureConnect and snap into position, reduced assembling difficulty, assembling is more prone to, ensured precision and the product matter of productStability, the uniformity of amount. Of the present invention simple in structure, easily, mobile frictional force is little, displacement essence in assemblingSpend high, constant product quality.
Technical scheme of the present invention is not limited to the restriction of above-mentioned specific embodiment, every according to technology of the present inventionThe technology distortion that scheme is made, within all falling into protection scope of the present invention.
Claims (3)
1. the closed loop AF lens driver of automatically focusing, is characterized in that: comprise framework, holding tank,Ball, active unit and drive feedback unit, described active unit comprise lens supports body, drive magnet andFeedback magnet, described drive feedback unit comprises Hall element, drive coil and wiring board, described lens prop upSupport body is placed in framework inside, and described drive magnet and feedback magnet are placed in respectively the right flank of lens supports bodyOn diverse location, described wiring board is placed in the right side of framework inside, described wiring board inner side and lens supports bodyRight flank is relative, and described drive coil and Hall element are placed in respectively on the diverse location of wiring board inner side, instituteThe position of stating drive coil is corresponding with drive magnet, and the position of described Hall element is corresponding with feedback magnet,Between described lens supports body and framework, form two holding tanks, be respectively the first holding tank and the second holding tank,Described the first holding tank and the second holding tank parallel with optical axis direction, and described the second holding tank is positioned at driving magneticBetween iron and feedback magnet, described the first holding tank is positioned at the diagonal position of the second holding tank, described the first folderHold in groove and the second holding tank ball is housed.
2. a kind of closed loop AF according to claim 1 lens driver of automatically focusing, its feature existsIn: described framework is provided with groove structure, and described wiring board is provided with raised structures, and described wiring board can lead toCross raised structures and groove structure is installed on framework.
3. a kind of closed loop AF according to claim 1 lens driver of automatically focusing, its feature existsIn: described wiring board comprises FPC body and plastic support, the described wiring board knot that is formed in oneStructure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610117448.0A CN105589169A (en) | 2016-02-24 | 2016-02-24 | Closed-loop AF automatic focusing lens driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610117448.0A CN105589169A (en) | 2016-02-24 | 2016-02-24 | Closed-loop AF automatic focusing lens driving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105589169A true CN105589169A (en) | 2016-05-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610117448.0A Pending CN105589169A (en) | 2016-02-24 | 2016-02-24 | Closed-loop AF automatic focusing lens driving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105589169A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111083316A (en) * | 2018-10-19 | 2020-04-28 | 北京小米移动软件有限公司 | Voice coil motor, camera module and terminal |
| CN111552050A (en) * | 2020-04-13 | 2020-08-18 | 睿恩光电有限责任公司 | Ball lens driving device for auto-focusing, camera device, and electronic apparatus |
| US10917545B2 (en) | 2017-09-06 | 2021-02-09 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Camera module and electronic device |
Citations (8)
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| TW201243412A (en) * | 2011-04-25 | 2012-11-01 | Asia Optical Co Inc | Focusing mechanism |
| CN103269414A (en) * | 2007-07-18 | 2013-08-28 | 磁化电子株式会社 | Camera system with auto-focus function and control method thereof |
| CN103728819A (en) * | 2012-10-11 | 2014-04-16 | 三星电机株式会社 | Camera module and control method thereof |
| CN104238238A (en) * | 2013-06-10 | 2014-12-24 | 三星电子株式会社 | Camera lens assembly |
| CN104423118A (en) * | 2013-08-23 | 2015-03-18 | 三星电机株式会社 | Lens Driving Device And Camera Module Including The Same |
| JP2015105988A (en) * | 2013-11-29 | 2015-06-08 | コニカミノルタ株式会社 | Actuation device, lens unit and imaging device |
| KR20150104703A (en) * | 2014-03-06 | 2015-09-16 | 주식회사 하이소닉 | Camera actuator with function of auto-focus and image stabilize |
| CN205880329U (en) * | 2016-02-24 | 2017-01-11 | 闫敏 | Closed loop AF auto focus lens drive arrangement |
-
2016
- 2016-02-24 CN CN201610117448.0A patent/CN105589169A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103269414A (en) * | 2007-07-18 | 2013-08-28 | 磁化电子株式会社 | Camera system with auto-focus function and control method thereof |
| TW201243412A (en) * | 2011-04-25 | 2012-11-01 | Asia Optical Co Inc | Focusing mechanism |
| CN103728819A (en) * | 2012-10-11 | 2014-04-16 | 三星电机株式会社 | Camera module and control method thereof |
| CN104238238A (en) * | 2013-06-10 | 2014-12-24 | 三星电子株式会社 | Camera lens assembly |
| CN104423118A (en) * | 2013-08-23 | 2015-03-18 | 三星电机株式会社 | Lens Driving Device And Camera Module Including The Same |
| JP2015105988A (en) * | 2013-11-29 | 2015-06-08 | コニカミノルタ株式会社 | Actuation device, lens unit and imaging device |
| KR20150104703A (en) * | 2014-03-06 | 2015-09-16 | 주식회사 하이소닉 | Camera actuator with function of auto-focus and image stabilize |
| CN205880329U (en) * | 2016-02-24 | 2017-01-11 | 闫敏 | Closed loop AF auto focus lens drive arrangement |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10917545B2 (en) | 2017-09-06 | 2021-02-09 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Camera module and electronic device |
| CN111083316A (en) * | 2018-10-19 | 2020-04-28 | 北京小米移动软件有限公司 | Voice coil motor, camera module and terminal |
| CN111552050A (en) * | 2020-04-13 | 2020-08-18 | 睿恩光电有限责任公司 | Ball lens driving device for auto-focusing, camera device, and electronic apparatus |
| CN111552050B (en) * | 2020-04-13 | 2021-07-30 | 睿恩光电有限责任公司 | Ball lens driving device for auto-focusing, camera device, and electronic apparatus |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Peng Kun Inventor before: Yan Min |
|
| CB03 | Change of inventor or designer information | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20171113 Address after: 454700 Henan city of Jiaozuo province Mengzhou City West Guo High-tech Zone in the courtyard Applicant after: HENAN HAOZE ELECTRONICS CO., LTD. Address before: 454700 Henan city of Jiaozuo province Mengzhou City West Guo compound High-tech Zone in Henan Province, Hao Ze Electronics Co. Ltd. Applicant before: Yan Min |
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| TA01 | Transfer of patent application right | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160518 |
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| RJ01 | Rejection of invention patent application after publication |