CN102890385A - Actuator and camera module with actuator - Google Patents
Actuator and camera module with actuator Download PDFInfo
- Publication number
- CN102890385A CN102890385A CN201110200334XA CN201110200334A CN102890385A CN 102890385 A CN102890385 A CN 102890385A CN 201110200334X A CN201110200334X A CN 201110200334XA CN 201110200334 A CN201110200334 A CN 201110200334A CN 102890385 A CN102890385 A CN 102890385A
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- China
- Prior art keywords
- guide rod
- actuator
- fixedly arranged
- movable frame
- fixed mount
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Abstract
The invention relates to an actuator which comprises a fixed frame, a movable frame, a base, a flexible circuit board, a piezoelectric motor, a driven rod, a first guide rod and a second guide rod, wherein the fixed frame is fixedly arranged on the base; the movable frame is contained inside the fixed frame and loaded on the base; the driven rod is fixedly arranged at one side of the movable frame; the piezoelectric motor is fixedly arranged on the flexible circuit board; the flexible circuit board is fixedly arranged at one lateral wall of the fixed frame, so that the piezoelectric motor is matched with the driven rod; the first guide rod and the second guide rod are arranged on the movable frame at intervals in a penetrating manner; one end of the first guide rod is fixedly arranged on the fixed frame; the other end of the first guide rod is fixedly arranged on the base; one end of the second guide rod is fixedly arranged on the fixed frame, and the other end of the second guide rod is fixedly arranged on the base. The invention also relates to a camera module with the actuator.
Description
Technical field
The present invention relates to imaging field, relate in particular to a kind of actuator and a kind of camera module with this actuator.
Background technology
At present, the actuator that driving camera lens module moves automatically to focus in the camera module generally includes fixed mount, is contained in this fixed mount and is used for accommodating movable frame, piezo-electric motor, follower lever, the driving circuit of optical mirror slip and the flexible PCB of installing this piezo-electric motor and this driving circuit.
In order to comply with the demand of at present actuator miniaturization, generally this follower lever is fixed on the sidewall of this movable frame, the flexible PCB that will be equiped with again this piezo-electric motor and this driving circuit is assembled on the sidewall of this fixed mount and this piezo-electric motor is cooperated with this follower lever.During this actuator start, this driving circuit excites this piezo-electric motor, thus this piezo-electric motor drive this follower lever make its drive this movable frame relatively this fixed mount move up and down and realize automatic focusing function.Yet, in this movable frame process that relatively this fixed mount moves up and down, this piezo-electric motor also can make this movable frame rotate relative to this fixed mount with acting force between this follower lever, causes the relative optical axis of optical mirror slip to be offset, so just can affect the precision of automatic focusing, reduce image quality.
Summary of the invention
In view of this, be necessary to provide a kind of precision that can guarantee automatically to focus to guarantee actuator and a kind of camera module with this actuator of image quality.
A kind of actuator, it comprises 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 the side of this movable frame.This piezo-electric motor is fixedly arranged on this flexible PCB.This flexible PCB is fixedly arranged on the sidewall of this fixed mount and this piezo-electric motor is cooperated with this follower lever.This first guide rod and this second guide rod are arranged in this movable frame at intervals, and an 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 comprises aforesaid actuator, 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 aimed at this image sensor.
Compared to prior art, this actuator and this camera module utilize this first guide rod and the common restriction of this second guide rod to live this movable frame rotating relative to this fixed mount, this movable frame can only be moved up and down along this first guide rod and this second guide rod, prevent that so the relative optical axis of optical mirror slip that is contained in this movable frame is offset, thereby guarantee the automatically precision of focusing, promote image quality.
Description of drawings
Fig. 1 is the schematic perspective view of the actuator that provides of first embodiment of the invention.
Fig. 2 is the decomposing schematic representation of the actuator among Fig. 1.
Fig. 3 is the decomposing schematic representation at another visual angle of the actuator among Fig. 1.
Fig. 4 is the schematic perspective view of the camera module that provides of second embodiment of the invention.
Fig. 5 is along the diagrammatic cross-section of V-V line among Fig. 4.
The main element symbol description
| |
100 |
| |
10 |
| |
102 |
| Second | 104 |
| |
105 |
| |
106 |
| |
107 |
| Fixed |
108 |
| Fixed |
12 |
| The first receiving |
120 |
| |
121 |
| The |
122 |
| The first accepting |
1220 |
| The second accepting |
1222 |
| |
123 |
| |
1230 |
| The |
124 |
| The 3rd accepting |
1240 |
| |
125 |
| Connecting |
1250 |
| The |
126 |
| The |
128 |
| |
14 |
| The second receiving |
140 |
| The |
142 |
| The |
144 |
| The |
146 |
| The |
148 |
| Through |
147 |
| |
149 |
| |
16 |
| |
162 |
| |
164 |
| Piezo- |
18 |
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20 |
| The |
22 |
| The |
24 |
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26 |
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28 |
| The |
282 |
| The |
284 |
| The |
300 |
| The |
30 |
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40 |
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50 |
Following embodiment further specifies the present invention in connection with above-mentioned accompanying drawing.
Embodiment
To be described in further detail embodiment of the present invention below in conjunction with accompanying drawing.
See also Fig. 1 to Fig. 3, be the actuator 100 of first embodiment of the invention.This actuator 100 comprises base 10, fixed mount 12, movable frame 14, flexible PCB 16, piezo-electric motor 18, follower lever 20, the first guide rod 22, the second guide rod 24, driving circuit 26 and magnet assembly 28.
This base 10 is rectangular structure roughly.This base 10 comprise first surface 102 and with opposing second 104 of this first surface 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 surface 102 and this second 104.This accommodation space 106 is communicated with this light hole 105, and this accommodation space 106 can be accepting hole or accepting groove, and this accommodation space 106 is for running through this first surface 102 and this accepting hole of second 104 in the present embodiment.Four corners of four projection 107 vertical these first surfaces 102 extend upward.These first surface 102 two adjacent corners offer respectively a fixed orifice 108.Two fixed orifices 108 and this light hole 105 and this accommodation space 106 be the interval mutually.
This fixed mount 12 is rectangular mount structure and offer the first square receiving space 120 to accommodate this movable frame 14 roughly.This fixed mount 12 comprises parallel relative the first side wall 122 and the second sidewall 124, and parallel relative the 3rd sidewall 126 and the 4th sidewall 128.This first side wall 122, the 3rd sidewall 126, this second sidewall 124 and the 4th sidewall 128 head and the tail vertical connections are with this first receiving space 120 of common formation.Offer the first accepting hole 1220 and the second accepting hole 1222 on this first side wall 122.This first accepting hole 1220 arranges with these the second accepting hole 1222 intervals.This second sidewall 124 offers the 3rd accepting hole 1240.This fixed mount 12 also comprises 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 are extended with respectively a flange 125 to these the first receiving space 120 inside, all offer a connecting hole 1250 on each flange 125, and described two connecting holes 1250 are corresponding with described two fixed orifices 108 respectively.Four corners of this lower surface 123 all offer a mounting hole 1230, and described four mounting holes 1230 are corresponding with described four projections, 107 difference.
In the present embodiment, two flanges 125 lay respectively at the corner that corner that this first side wall 122 and the 3rd sidewall 126 intersect and this first side wall 122 and the 4th sidewall 128 intersect.Be appreciated that two flanges 125 can be arranged in any two corners in four corners of this upper surface 121.
This movable frame 14 is rectangular frame and offer the second circular receiving space 140 to accommodate camera lens module 30 (Fig. 4 shows) roughly.This movable frame 14 is contained in this first receiving space 120 and is carried on this first surface 102.This movable frame 14 comprises parallel relative the first side 142 and the second side 144, and parallel relative the 3rd side 146 and the 4th side 148.This first side 142, the 3rd side 146, this second side 144 and the 4th side 148 head and the tail vertical connections are with this second receiving space 140 of common formation.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.This first side 142 offers a through hole 147 that runs through this movable frame 14 with the corner that the 3rd side 146 joins, and this first side 142 offers a breach 149 that runs through this movable frame 14 with the corner that the 4th side 148 joins.This through hole 147 is corresponding with one of them connecting hole 1250 and one of them fixed orifice 108, and this breach 149 is corresponding with another connecting hole 1250 and another fixed orifice 108.
This flexible PCB 16 comprise a first surface 162 and with the opposing second surface 164 of 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 driving circuit 26 are installed on the second surface 164 of this flexible PCB 16 each other individually.This driving circuit 26 is electrically connected with this piezo-electric motor 18.When this flexible PCB 16 was installed on this first side wall 122, this piezo-electric motor 18 was contained in this first accepting hole 1220, and this driving 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 and the 4th side 148 join.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 the 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 comprises 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 by the gummed mode and is relative with this first magnet 282.Different so that this first magnet 282 of the magnetic pole of the end that this first magnet 282 and this second magnet 284 are adjacent repels mutually with this second magnet 284.
When assembling this actuator 100, through hole 147 ends interior and this first guide rod 22 that this first guide rod 22 wears this movable frame 14 are fixed in the fixed orifice 108 of this base 10, breach 149 ends interior and this second guide rod 24 that this second guide rod 24 wears this movable frame 14 are fixed in another fixed orifice 108 of this base 10, thereby this movable frame 14 are carried on the first surface 102 of this base 10.This follower lever 20 is fixedly arranged on this first side 142 by the gummed 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 the gummed mode.This flexible PCB 16 is fixedly arranged on this first side wall 122 by the gummed mode, and at this moment, this piezo-electric motor 18 is contained in this first accepting hole 1220, and this driving circuit 26 is contained in this second accepting hole 1222.This first magnet 282 is installed in the 3rd accepting hole 1240.These four projections 107 are arranged in respectively in these four mounting holes 1230 and with the fixing glue gummed and fix to be fixed in this fixed mount 12 on this first surface 102 and to accommodate this movable frame 14.At this moment, this piezo-electric motor 18 is with these follower lever 20 accurate contrapositions and cooperatively interact.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 the 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 driving circuit 26 excites this piezo-electric motor 18.Thereby these piezo-electric motor 18 these follower levers 20 of driving make it drive this movable frame 14 and move up and down the realization automatic focusing function along this first guide rod 22 and this second guide rod 24.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, thereby force this piezo-electric motor 18 and these follower lever 20 no-floats.In the process of above-mentioned automatic focusing, this movable frame 14 rotating relative to this fixed mount 12 lived in this first guide rod 22 and the 24 common restrictions of this second guide rod, therefore, this movable frame 14 can only move up and down along this first guide rod 22 and this second guide rod 24, prevent that so the relative optical axis of optical mirror slip that is contained in the movable frame 14 is offset, thereby guarantee the automatically precision of focusing, promote image quality.
See also Fig. 4 and Fig. 5, the camera module 300 that provides for second embodiment of the invention.This camera module 300 comprises actuator 100, camera lens module 30, substrate 40 and the image sensor 50 in the first embodiment.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 and the centrally aligned of this image sensor 50, and with the centrally aligned of this light hole 105.When this camera module 300 was taken, the movable frame 14 of actuator 100 drove camera lens modules 30 and moves and realize automatic focusing.
The beneficial effect that the camera module 300 of second embodiment of the invention possesses is similar to the beneficial effect that the actuator 100 of the first embodiment possesses, and does not repeat them here.
Be understandable that, for the person of ordinary skill of the art, can make other various corresponding changes and distortion by technical conceive according to the present invention, and all these change the protection domain that all should belong to claim of the present invention with distortion.
Claims (10)
1. actuator, it comprises fixed mount, movable frame, base, flexible PCB, piezo-electric motor and follower lever, 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 the side of this movable frame, this piezo-electric motor is fixedly arranged on this flexible PCB, this flexible PCB is fixedly arranged on the sidewall of this fixed mount and this piezo-electric motor is cooperated with this follower lever, it is characterized in that, this actuator comprises that also the first guide rod reaches and this first guide rod the second guide rod separately, this first guide rod and this second guide rod are arranged in this movable frame, one end of this first guide rod is fixedly arranged on this fixed mount, the other end is fixedly arranged on this base, and an end of this second guide rod is fixedly arranged on this fixed mount, and the other end is fixedly arranged on this base.
2. actuator as claimed in claim 1 is characterized 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 is characterized in that, this fixed mount is fixedly arranged on this base by the engaging mode.
4. actuator as claimed in claim 1 is characterized in that, this fixed mount is fixedly arranged on this base by the gummed mode.
5. actuator as claimed in claim 1, it is characterized in that, this movable frame is cube structure and comprises the first side and the second side that is parallel to each other, this follower lever is fixedly arranged on this first side, this fixed mount is cube structure and comprises the first side wall and the second sidewall that is parallel to each other, this flexible PCB is fixedly arranged on this first side wall, and this first side wall is relative with this first side, and this second sidewall is relative with this second side.
6. actuator as claimed in claim 5, it is characterized in that this actuator also comprises magnet assembly, this magnet assembly comprises the first magnet and the second magnet, this first magnet is fixedly arranged on this second sidewall, and this second magnet is fixedly arranged on this second side and with this first magnet and interacts.
7. actuator as claimed in claim 5, it is characterized in that, this fixed mount offers receiving space to accommodate this movable frame, two corners of this fixed mount are extended with respectively flange to this receiving space inside, each flange all offers a connecting hole, this base offers and two two fixed orifices that this connecting hole is corresponding, this end of this first guide rod and this end of this second guide rod are sticked in respectively in the connecting hole, and this other end of this first guide rod and this other end of this second guide rod are individually fixed in this fixed orifice.
8. actuator as claimed in claim 7, it is characterized in that, two corners of this movable frame offer respectively the through hole and the breach that runs through this movable frame that run through this movable frame, and this first guide rod is arranged in this through hole, and this second guide rod is arranged in this breach.
9. actuator as claimed in claim 6, it is characterized in that, this actuator also comprises the driving circuit that is electrically connected with this piezo-electric motor, this driving circuit be installed on this flexible PCB and with this piezo-electric motor separately, this the first side wall offers the first accepting hole and second accepting hole of space, this second sidewall offers the 3rd accepting hole, this piezo-electric motor is contained in this first accepting hole, this driving circuit is contained in this second accepting hole, and this first magnet is contained in the 3rd accepting hole.
10. camera module, it comprises actuator as claimed in claim 1, 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 and the centrally aligned 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 true CN102890385A (en) | 2013-01-23 |
| CN102890385B 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) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108241197A (en) * | 2016-12-23 | 2018-07-03 | 台湾东电化股份有限公司 | Driving mechanism |
| WO2019244852A1 (en) * | 2018-06-21 | 2019-12-26 | Tdk株式会社 | Lens drive device |
| JP2019219552A (en) * | 2018-06-21 | 2019-12-26 | Tdk株式会社 | Lens drive device |
| JP2020013065A (en) * | 2018-07-20 | 2020-01-23 | Tdk株式会社 | Lens drive device |
| WO2021047635A1 (en) * | 2019-09-12 | 2021-03-18 | 华为技术有限公司 | Photographing module and mobile terminal |
| CN116320289A (en) * | 2023-01-31 | 2023-06-23 | 宇超电力股份有限公司 | Intelligent comprehensive monitoring device for power distribution room environment and application method thereof |
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| CN1659465A (en) * | 2002-06-05 | 2005-08-24 | 诺基亚有限公司 | Digital camera system with piezoelectric actuators |
| 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 |
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| 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 |
| US20110141584A1 (en) * | 2009-12-10 | 2011-06-16 | New Scale Technologies | Lens actuator module |
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Patent Citations (8)
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| CN1659465A (en) * | 2002-06-05 | 2005-08-24 | 诺基亚有限公司 | Digital camera system with piezoelectric actuators |
| 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 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108241197A (en) * | 2016-12-23 | 2018-07-03 | 台湾东电化股份有限公司 | Driving mechanism |
| CN108241197B (en) * | 2016-12-23 | 2021-08-31 | 台湾东电化股份有限公司 | Driving mechanism |
| WO2019244852A1 (en) * | 2018-06-21 | 2019-12-26 | Tdk株式会社 | Lens drive device |
| JP2019219552A (en) * | 2018-06-21 | 2019-12-26 | Tdk株式会社 | Lens drive device |
| CN112334810A (en) * | 2018-06-21 | 2021-02-05 | Tdk株式会社 | Lens driving device |
| CN112334810B (en) * | 2018-06-21 | 2023-08-11 | Tdk株式会社 | Lens driving device |
| JP2020013065A (en) * | 2018-07-20 | 2020-01-23 | Tdk株式会社 | Lens drive device |
| WO2021047635A1 (en) * | 2019-09-12 | 2021-03-18 | 华为技术有限公司 | Photographing module and mobile terminal |
| US12010429B2 (en) | 2019-09-12 | 2024-06-11 | Huawei Technologies Co., Ltd. | Camera module and mobile terminal |
| CN116320289A (en) * | 2023-01-31 | 2023-06-23 | 宇超电力股份有限公司 | Intelligent comprehensive monitoring device for power distribution room environment and application method thereof |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN102890385B (en) | 2016-08-31 |
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