CN102890385B - Actuator and there is the camera module of this actuator - Google Patents
Actuator and there is the camera module of this actuator Download PDFInfo
- Publication number
- CN102890385B CN102890385B CN201110200334.XA CN201110200334A CN102890385B CN 102890385 B CN102890385 B CN 102890385B CN 201110200334 A CN201110200334 A CN 201110200334A CN 102890385 B CN102890385 B CN 102890385B
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- China
- Prior art keywords
- guide rod
- actuator
- fixedly arranged
- fixed mount
- movable frame
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Abstract
The present invention relates to a kind of actuator, it includes fixed mount, movable frame, base, flexible PCB, piezo-electric motor, follower lever, the first guide rod and the second guide rod.This fixed mount is fixedly arranged on this base.This movable frame is contained in this fixed mount and is carried on this base.This follower lever is fixedly arranged on a side of this movable frame.This piezo-electric motor is fixedly arranged on this flexible PCB.This flexible PCB is fixedly arranged on a sidewall of this fixed mount and makes this piezo-electric motor coordinate with this follower lever.This first guide rod and this second guide rod are arranged in this movable frame at intervals, and one end of this first guide rod is fixedly arranged on this fixed mount, and the other end is fixedly arranged on this base.One end of this second guide rod is fixedly arranged on this fixed mount, and the other end is fixedly arranged on this base.The invention still further relates to a kind of camera module with this actuator.
Description
Technical field
The present invention relates to imaging field, particularly relate to a kind of actuator and a kind of camera module with this actuator.
Background technology
At present, the actuator driving camera lens module to move to carry out auto-focusing in camera module generally includes fixed mount, is contained in this fixed mount and for housing the movable frame of optical glass, piezo-electric motor, follower lever, drive circuit and installing the flexible PCB of this piezo-electric motor and this drive circuit.
In order to comply with the demand of actuator miniaturization at present, typically this follower lever is fixed on a sidewall of this movable frame, then the flexible PCB being equiped with this piezo-electric motor and this drive circuit is assembled on a sidewall of this fixed mount and makes this piezo-electric motor coordinate with this follower lever.During this actuator start, this drive circuit excites this piezo-electric motor, and this piezo-electric motor drives this follower lever to make it drive this movable frame to move up and down relative to this fixed mount thus realizes automatic focusing function.But, during this movable frame moves up and down relative to this fixed mount, the active force between this piezo-electric motor with this follower lever also can make this movable frame rotate relative to this fixed mount, causes optical glass to offset relative to optical axis, so will affect the precision of auto-focusing, reduce image quality.
Summary of the invention
In view of this, it is necessary to provide a kind of and ensure that auto-focusing precision is to ensure the actuator of image quality and a kind of camera module with this actuator.
A kind of actuator, it includes fixed mount, movable frame, base, flexible PCB, piezo-electric motor, follower lever, the first guide rod and the second guide rod.This fixed mount is fixedly arranged on this base.This movable frame is contained in this fixed mount and is carried on this base.This follower lever is fixedly arranged on a side of this movable frame.This piezo-electric motor is fixedly arranged on this flexible PCB.This flexible PCB is fixedly arranged on a sidewall of this fixed mount and makes this piezo-electric motor coordinate with this follower lever.This first guide rod and this second guide rod are arranged in this movable frame at intervals, and one end of this first guide rod is fixedly arranged on this fixed mount, and the other end is fixedly arranged on this base.One end of this second guide rod is fixedly arranged on this fixed mount, and the other end is fixedly arranged on this base.
A kind of camera module, it includes actuator as above, camera lens module, substrate and image sensor.This camera lens module is contained in this movable frame.This actuator is carried on this substrate.This image sensor is positioned on this substrate and is contained in this base.The optical axis of this camera lens module is directed at this image sensor.
Compared to prior art, this actuator and this camera module utilize this first guide rod and this second guide rod jointly to limit this movable frame rotating relative to this fixed mount, this movable frame is made to move up and down only along this first guide rod and this second guide rod, so prevent the optical glass being contained in this movable frame from offseting relative to optical axis, thus ensure the precision of auto-focusing, promote image quality.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of the actuator that first embodiment of the invention provides.
Fig. 2 is the decomposing schematic representation of the actuator in Fig. 1.
Fig. 3 is the decomposing schematic representation at another visual angle of the actuator in Fig. 1.
Fig. 4 is the schematic perspective view of the camera module that second embodiment of the invention provides.
Fig. 5 is the generalized section in Fig. 4 along V-V line.
Main element symbol description
| Actuator | 100 |
| Base | 10 |
| First | 102 |
| Second | 104 |
| Light hole | 105 |
| Accommodation space | 106 |
| Projection | 107 |
| Fixing hole | 108 |
| Fixed mount | 12 |
| First receiving space | 120 |
| Upper surface | 121 |
| The first side wall | 122 |
| First accepting hole | 1220 |
| Second accepting hole | 1222 |
| Lower surface | 123 |
| Installing hole | 1230 |
| Second sidewall | 124 |
| 3rd accepting hole | 1240 |
| Flange | 125 |
| Connecting hole | 1250 |
| 3rd sidewall | 126 |
| 4th sidewall | 128 |
| Movable frame | 14 |
| Second receiving space | 140 |
| First side | 142 |
| Second side | 144 |
| 3rd side | 146 |
| 4th side | 148 |
| Through hole | 147 |
| Breach | 149 |
| Flexible PCB | 16 |
| First surface | 162 |
| Second surface | 164 |
| Piezo-electric motor | 18 |
| Follower lever | 20 |
| First guide rod | 22 |
| Second guide rod | 24 |
| Drive circuit | 26 |
| Magnet assembly | 28 |
| First Magnet | 282 |
| Second Magnet | 284 |
| Camera module | 300 |
| Camera lens module | 30 |
| Substrate | 40 |
| Image sensor | 50 |
Following detailed description of the invention will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Detailed description of the invention
Embodiment of the present invention will be described in further detail below in conjunction with the accompanying drawings.
Refer to Fig. 1 to Fig. 3, for the actuator 100 of first embodiment of the invention.This actuator 100 includes base 10, fixed mount 12, movable frame 14, flexible PCB 16, piezo-electric motor 18, follower lever the 20, first guide rod the 22, second guide rod 24, drive circuit 26 and magnet assembly 28.
This generally rectangular shaped structure of base 10.This base 10 includes the first face 102 and second face 104 opposing with this first face 102.This base 10 offers circular light hole 105 and arc accommodation space 106.This light hole 105 is positioned at the center of this base 10 and runs through this first face 102 and this second face 104.This accommodation space 106 connects with this light hole 105, and this accommodation space 106 can be accepting hole or accepting groove, and in present embodiment, this accommodation space 106 is to run through this first face 102 and the accepting hole in this second face 104.Four corners in four projection 107 these the first faces 102 vertical upwardly extend.Adjacent two corners in this first face 102 offer a fixing hole 108 respectively.Two fixing holes 108 and this light hole 105 and this accommodation space 106 are spaced mutually.
This generally rectangular shaped mount structure of fixed mount 12 and offer the first square receiving space 120 to house this movable frame 14.This fixed mount 12 includes parallel relative the first side wall 122 and the second sidewall 124, and parallel the 3rd relative sidewall 126 and the 4th sidewall 128.This first side wall the 122, the 3rd sidewall 126, this second sidewall 124 and the 4th sidewall 128 head and the tail vertical connection are to be collectively forming this first receiving space 120.The first accepting hole 1220 and the second accepting hole 1222 is offered on this first side wall 122.This first accepting hole 1220 and this second accepting hole 1222 interval are arranged.This second sidewall 124 offers the 3rd accepting hole 1240.This fixed mount 12 also includes upper surface 121 and lower surface 123, and this upper surface 121 and this lower surface 123 lay respectively at the opposite end of this fixed mount 12.Two corners of this upper surface 121 have each extended over a flange 125 to this first receiving space 120 inside, and each flange 125 all offers a connecting hole 1250, and said two connecting hole 1250 is corresponding with said two fixing hole 108 respectively.Four corners of this lower surface 123 all offer an installing hole 1230, and described four installing holes 1230 are the most corresponding with described four projections 107.
In present embodiment, two flanges 125 lay respectively at corner that this first side wall 122 intersects and the corner that this first side wall 122 intersects with the 4th sidewall 128 with the 3rd sidewall 126.It is appreciated that two flanges 125 may be located at any two corner in four corners of this upper surface 121.
This generally rectangular shaped frame of movable frame 14 and offer circle the second receiving space 140 with house camera lens module 30 (Fig. 4 shows).In this movable frame 14 is contained in this first receiving space 120 and be carried on this first face 102.This movable frame 14 includes parallel the first relative side 142 and the second side 144, and parallel the 3rd relative side 146 and the 4th side 148.This side 146, the first side the 142, the 3rd, this second side 144 and the 4th side 148 head and the tail vertical connection are to be collectively forming this second receiving space 140.This first side 142 is relative with this first side wall 122, and this second side 144 is relative with this second sidewall 124, and the 3rd side 146 is relative with the 3rd sidewall 126, and the 4th side 148 is relative with the 4th sidewall 128.The corner that this first side 142 connects with the 3rd side 146 offers a through hole 147 running through this movable frame 14, and the corner that this first side 142 connects with the 4th side 148 offers a breach 149 running through this movable frame 14.This through hole 147 is corresponding with one of them connecting hole 1250 and one of them fixing hole 108, and this breach 149 is corresponding with another connecting hole 1250 and another fixing hole 108.
This flexible PCB 16 includes a first surface 162 and the second surface 164 opposing with this first surface 162.This flexible PCB 16 is installed on this first side wall 122 and this second surface 164 is glued on this first side wall 122.
This piezo-electric motor 18 and this drive circuit 26 are installed on the second surface 164 of this flexible PCB 16 each other individually.This drive circuit 26 is electrically connected with this piezo-electric motor 18.When this flexible PCB 16 is installed on this first side wall 122, this piezo-electric motor 18 is contained in this first accepting hole 1220, and this drive circuit 26 is contained in this second accepting hole 1222.
This follower lever 20 is fixedly arranged on the corner that this first side 142 connects with the 4th side 148.This first guide rod 22 is arranged in this through hole 147, and this second guide rod 24 is arranged in this breach 149.In present embodiment, this follower lever 20, this first guide rod 22 and this second guide rod 24 are made by stainless steel material.
This magnet assembly 28 includes the first Magnet 282 and the second Magnet 284.This first Magnet 282 is fixedly arranged in the 3rd accepting hole 1240 of this second sidewall 124.This second Magnet 284 is fixedly arranged on this second side 144 and relative with this first Magnet 282 by glued mode.The magnetic pole of one end that this first Magnet 282 is adjacent with this second Magnet 284 is different so that this first Magnet 282 is mutually exclusive with this second Magnet 284.
When assembling this actuator 100, this first guide rod 22 wears interior and this first guide rod 22 one end of through hole 147 of this movable frame 14 and is fixed in a fixing hole 108 of this base 10, this second guide rod 24 wears interior and this second guide rod 24 one end of breach 149 of this movable frame 14 and is fixed in another fixing hole 108 of this base 10, thus this movable frame 14 is carried on the first face 102 of this base 10.This follower lever 20 is fixedly arranged on this first side 142 by glued mode, and this accommodation space 106 provides certain installing space for this follower lever 20.This second Magnet 284 is fixedly arranged on this second side 144 by glued mode.This flexible PCB 16 is fixedly arranged on this first side wall 122 by glued mode, and now, this piezo-electric motor 18 is contained in this first accepting hole 1220, and this drive circuit 26 is contained in this second accepting hole 1222.This first Magnet 282 is installed in the 3rd accepting hole 1240.Fix this fixed mount 12 is fixed on this first face 102 and houses this movable frame 14 in these four projections 107 are arranged in these four installing holes 1230 respectively and by fixing glue gluing.Now, this piezo-electric motor 18 and this follower lever 20 accurate contraposition and cooperate.This first Magnet 282 is relative with this second Magnet 284, and the other end of this first guide rod 22 is fixedly arranged in a connecting hole 1250 of this fixed mount 12, and the other end of this second guide rod 24 is fixedly arranged in another connecting hole 1250 of this fixed mount 12.
When driving this actuator 100, this drive circuit 26 excites this piezo-electric motor 18.This piezo-electric motor 18 drives this follower lever 20 to make it drive this movable frame 14 to move up and down along this first guide rod 22 and this second guide rod 24 thus realizes automatic focusing function.Meanwhile, produce repulsive force between this first Magnet 282 and this second Magnet 284 and promote this movable frame 14 with the direction towards this piezo-electric motor 18, thus force this piezo-electric motor 18 and this follower lever 20 no-float.During above-mentioned auto-focusing, this first guide rod 22 and this second guide rod 24 limit this movable frame 14 rotating relative to this fixed mount 12 jointly, therefore, this movable frame 14 moves up and down only along this first guide rod 22 and this second guide rod 24, so prevent the optical glass being contained in movable frame 14 from offseting relative to optical axis, thus ensure the precision of auto-focusing, promote image quality.
The actuator 100 of the present invention utilizes the first guide rod 22 and the second guide rod 24 jointly to limit this movable frame 14 rotating relative to this fixed mount 12, movable frame 14 is made to move up and down only along the first guide rod 22 and this second guide rod 24, so prevent the optical glass being contained in movable frame 14 from offseting relative to optical axis, thus ensure the precision of auto-focusing, promote image quality.
Refer to Fig. 4 and Fig. 5, the camera module 300 provided for second embodiment of the invention.This camera module 300 includes the actuator 100 in the first embodiment, camera lens module 30, substrate 40 and image sensor 50.This camera lens module 30 is contained in this second receiving space 140.This actuator 100 is carried on this substrate 40.This image sensor 50 is positioned on this substrate 40 and is contained in this light hole 105.The optical axis OO ' of this camera lens module 30 is directed at the center of this image sensor 50, and is directed at the center of this light hole 105.When this camera module 300 shoots, the movable frame 14 of actuator 100 drives camera lens module 30 to move and realize auto-focusing.
Beneficial effect that the camera module 300 of second embodiment of the invention possesses and the beneficial effect that the actuator 100 of the first embodiment possesses are similar, do not repeat them here.
It is understood that for the person of ordinary skill of the art, can conceive according to the technology of the present invention and make other various corresponding changes and deformation, and all these change all should belong to the protection domain of the claims in the present invention with deformation.
Claims (8)
1. an actuator, it include fixed mount, movable frame, base, flexible PCB,
Piezo-electric motor and follower lever, this fixed mount is fixedly arranged on this base, and this movable frame houses
In this fixed mount and be carried on this base, this follower lever is fixedly arranged on the one of this movable frame
On individual side, this piezo-electric motor is fixedly arranged on this flexible PCB, and this flexible PCB is solid
It is located on a sidewall of this fixed mount and makes this piezo-electric motor coordinate with this follower lever, its
Be characterised by, this actuator also include the first guide rod and with this first guide rod separately
Two guide rods, this first guide rod and this second guide rod are arranged in this movable frame, this first guide rod
One end be fixedly arranged on this fixed mount, the other end is fixedly arranged on this base, this second guide rod
One end be fixedly arranged on this fixed mount, the other end is fixedly arranged on this base, this movable frame in
Cube structure and include the first side and the second side being parallel to each other, this follower lever is solid
Being located on this first side, this fixed mount is cube structure and includes be parallel to each other
One sidewall and the second sidewall, this flexible PCB is fixedly arranged on this first side wall, and this is first years old
Sidewall is relative with this first side, and this second sidewall is relative with this second side, and this is fixed
Frame offers receiving space to house this movable frame, and two corners of this fixed mount are to this
Having each extended over flange inside receiving space, each flange all offers a connecting hole, should
Base offers two fixing holes corresponding with two these connecting holes, being somebody's turn to do of this first guide rod
This one end of one end and this second guide rod is sticked in connecting hole respectively, this first guide rod
This other end is individually fixed in this fixing hole with this other end of this second guide rod.
2. actuator as claimed in claim 1, it is characterised in that this first guide rod,
This second guide rod and this follower lever are made by stainless steel material.
3. actuator as claimed in claim 1, it is characterised in that this fixed mount passes through
Snap fit is fixedly arranged on this base.
4. actuator as claimed in claim 1, it is characterised in that this fixed mount passes through
Glued mode is fixedly arranged on this base.
5. actuator as claimed in claim 1, it is characterised in that this actuator also wraps
Including magnet assembly, this magnet assembly includes the first Magnet and the second Magnet, this first Magnet
Be fixedly arranged on this second sidewall, this second Magnet be fixedly arranged on this second side and with this
One Magnet interacts.
6. actuator as claimed in claim 1, it is characterised in that the two of this movable frame
Individual corner offer a through hole running through this movable frame respectively and one to run through this movable
The breach of frame, this first guide rod is arranged in this through hole, and this second guide rod is arranged in this and lacks
In mouthful.
7. actuator as claimed in claim 5, it is characterised in that this actuator also wraps
Including the drive circuit being electrically connected with this piezo-electric motor, this drive circuit is installed in this flexibility
On circuit board and with this piezo-electric motor separately, this first side wall offers spaced
First accepting hole and the second accepting hole, this second sidewall offers the 3rd accepting hole, this pressure
Electric notor is contained in this first accepting hole, and this drive circuit is contained in this second accepting hole
In, this first Magnet is contained in the 3rd accepting hole.
8. a camera module, it includes camera lens module, substrate, image sensor and such as
Actuator described in claim 1, this camera lens module is contained in this movable frame, this cause
Dynamic device is carried on this substrate, and this image sensor is positioned on this substrate and is contained in this end
In seat, the optical axis of this camera lens module is directed at the center of this image sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110200334.XA CN102890385B (en) | 2011-07-18 | 2011-07-18 | Actuator and there is the camera module of this actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110200334.XA CN102890385B (en) | 2011-07-18 | 2011-07-18 | Actuator and there is the camera module of this actuator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102890385A CN102890385A (en) | 2013-01-23 |
| CN102890385B true CN102890385B (en) | 2016-08-31 |
Family
ID=47533930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110200334.XA Expired - Fee Related CN102890385B (en) | 2011-07-18 | 2011-07-18 | Actuator and there is the camera module of this actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102890385B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108241197B (en) * | 2016-12-23 | 2021-08-31 | 台湾东电化股份有限公司 | Drive mechanism |
| JP6981376B2 (en) * | 2018-07-20 | 2021-12-15 | Tdk株式会社 | Lens drive device |
| WO2019244852A1 (en) * | 2018-06-21 | 2019-12-26 | Tdk株式会社 | Lens drive device |
| JP6852715B2 (en) * | 2018-06-21 | 2021-03-31 | Tdk株式会社 | Lens drive device |
| CN112492130B (en) | 2019-09-12 | 2021-10-01 | 华为技术有限公司 | Camera module and mobile terminal |
| CN116320289B (en) * | 2023-01-31 | 2023-10-31 | 宇超电力股份有限公司 | Intelligent comprehensive monitoring device for power distribution room environment and application method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1659465A (en) * | 2002-06-05 | 2005-08-24 | 诺基亚有限公司 | Digital camera system with piezoelectric actuator |
| CN1811513A (en) * | 2005-01-27 | 2006-08-02 | 柯尼卡美能达精密光学株式会社 | Lens unit and image pickup unit |
| CN1912665A (en) * | 2005-08-12 | 2007-02-14 | 富士能株式会社 | Actuator |
| CN101416090A (en) * | 2006-03-30 | 2009-04-22 | 1...有限公司 | Camera lens actuation apparatus |
| CN101431609A (en) * | 2007-11-09 | 2009-05-13 | 鸿富锦精密工业（深圳）有限公司 | Imaging module group |
| TWM370109U (en) * | 2009-07-28 | 2009-12-01 | E Pin Internat Tech Co Ltd | A compact auto focus lens module with piezoelectric driving actuator |
| TWM370110U (en) * | 2009-07-28 | 2009-12-01 | E Pin Internat Tech Co Ltd | Auto focus lens module with piezoelectric driving actuator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8279541B2 (en) * | 2009-12-10 | 2012-10-02 | New Scale Technologies | Lens actuator module |
-
2011
- 2011-07-18 CN CN201110200334.XA patent/CN102890385B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1659465A (en) * | 2002-06-05 | 2005-08-24 | 诺基亚有限公司 | Digital camera system with piezoelectric actuator |
| CN1811513A (en) * | 2005-01-27 | 2006-08-02 | 柯尼卡美能达精密光学株式会社 | Lens unit and image pickup unit |
| CN1912665A (en) * | 2005-08-12 | 2007-02-14 | 富士能株式会社 | Actuator |
| CN101416090A (en) * | 2006-03-30 | 2009-04-22 | 1...有限公司 | Camera lens actuation apparatus |
| CN101431609A (en) * | 2007-11-09 | 2009-05-13 | 鸿富锦精密工业（深圳）有限公司 | Imaging module group |
| TWM370109U (en) * | 2009-07-28 | 2009-12-01 | E Pin Internat Tech Co Ltd | A compact auto focus lens module with piezoelectric driving actuator |
| TWM370110U (en) * | 2009-07-28 | 2009-12-01 | E Pin Internat Tech Co Ltd | Auto focus lens module with piezoelectric driving actuator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102890385A (en) | 2013-01-23 |
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Granted publication date: 20160831 Termination date: 20170718 |