CN102087398B - Lens driving device, autofocus camera, and camera-equipped mobile terminal - Google Patents
Lens driving device, autofocus camera, and camera-equipped mobile terminal Download PDFInfo
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- CN102087398B CN102087398B CN201010573323.1A CN201010573323A CN102087398B CN 102087398 B CN102087398 B CN 102087398B CN 201010573323 A CN201010573323 A CN 201010573323A CN 102087398 B CN102087398 B CN 102087398B
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Abstract
The invention provides a lens driving device, an autofocus camera, and a camera-equipped mobile terminal, wherein the lens driving device, being simple in structure and easy to assemble, can move a lens carrier towards the optical axis direction and can realize manual compensation. A lens drive unit which moves the lens carrier along the optical axis direction and X-Y direction comprises a first annular coil 19 arranged on the periphery of the lens carrier 5, a second annular coil 16 arranged on the periphery of a sub-lens carrier 5 at a circumferential interval of 90 Degree, and first magnets 17 and second magnets 18 fixed on the inner surface of a casing 3, The second magnets 18 are arranged between adjacent first magnets 17 and correspond to the periphery of the second annular coil 16a-16d. When the lens carrier 5 moves to the optical axis direction, the first annular coil 19 is powered on. And, when the lens carrier 5 moves to the X-Y direction, the second annular coil is powered on.
Description
Technical field
The invention relates to lens driving apparatus, autofocus camera and the mobile phone with camera.
Background technology
On the one hand, be mounted in the minicam on the objects such as mobile phone, camera lens carrier only moves to optical axis direction, while manually making it be moved by X-Y direction, will rely on optical axis to supplement motor for supplementing, directions X CD-ROM drive motor, and Y-direction CD-ROM drive motor moves whole drive unit.
But, about minicam lens driving apparatus used, never crossed in the past a moving lens carrier and completed the movement of the optical axis direction (Z direction) to camera lens carrier and the movement by X-Y direction.
In addition, even if can carry out the movement of camera lens carrier to optical axis direction by the technology of patent documentation 1, also can only complete the movement of directions X, manually supplement (X-Y direction (with the direct cross facet of optical axis) is mobile) and cannot realize.
Summary of the invention
Therefore, the object of the present invention is to provide easy assembling simple in structure and can supplement to optical axis direction and manually mobile lens driving apparatus, autofocus camera and the mobile phone with camera with camera lens carrier.
Lens driving apparatus of the present invention, be characterized in being arranged on the annulus inner side of ring-shaped shell and shell, there are the camera lens carrier of supporting camera lens and the 1st annulus that is arranged on camera lens carrier periphery in inner side, camera lens carrier has been installed the 2nd annulus of plural number outward every 90 degree by all veers, the base of supporting outer, one end is fixed on the base other end and is fixed on the spring on camera lens carrier, be fixed on multiple the first magnetites and multiple the 2nd magnetite of shell surrounding, control the control part of each coil electricity, the first magnetite equidistantly distributes in shell surrounding and relative with the outer ring surface of the 2nd annulus while installation, control part moves camera lens carrier during to optical axis direction, the first ring-type coil electricity, the 2nd annulus energising of specifying when camera lens carrier is shifted to the X-Y direction directly crossing with optical axis.
Camera lens carrier is to be the 2nd annulus energising by circumferentially interval 90 degree are installed by camera lens carrier being moved to the 1st annulus energising to optical axis direction, manually supplementing to the movement of optical axis direction, is that camera lens carrier is moved by X-Y direction.Therefore, camera lens carrier can focus on mobile and manually supplement.
The the 1st and the 2nd annulus is fixed on camera lens carrier, and the 1st and the 2nd magnetite is fixed on the inner circumferential side face of shell.And camera lens carrier has been installed, and it is fixed on the 1st and the 2nd annulus in ring-shaped shell and encircles in side, and base and camera lens carrier are fixed with spring, assemble so form simply and easily.
Particularly, inserting the camera lens carrier of having fixed the 1st and the 2nd annulus assembles after the shell internal perisporium of inner circumferential side face to having fixed the 1st and the 2nd magnetite, so can assemble according to existing (only focusing on mobile) running program that lens driving apparatus is identical only moving in Z direction, operate fairly simple easy.
Described lens driving apparatus, its further feature is, and orthogonal ring is seen in the 2nd annulus side, and each the 2nd magnetite is established in opposite directions in 2 limit portions along camera lens optical axis direction, and the 2nd annulus is arranged on the space between the 2nd relative magnetite.As the 2nd annulus on camera lens carrier being installed to the space between the 2nd magnetite in opposite directions, camera lens carrier from inserting shell, can be assembled optical axis direction, so in the time of shell and the assembling of camera lens carrier, be easy to determine position.
Autofocus camera of the present invention, is characterized in that feature is to have aforesaid lens driving apparatus, the imaging sensor that the camera lens knot phase side of camera lens carrier arranges.
Invention of the present invention is the mobile phone with camera, is characterized in having carried aforementioned autofocus camera.
Accompanying drawing explanation
Fig. 1 is installed on the axle of extracting out after the 1st and the 2nd annulus in the shell of relevant the 1st, the 2nd magnetite in the 1st embodiment to survey view in drive unit.
Fig. 2 is the exploded isometric view of the lens driving apparatus relevant to the 1st embodiment.
Fig. 3 is in the 1st embodiment, install the 1st and the axle of the shell of the 2nd magnetite and the 2nd annulus part that is installed on shell after cutting off survey view.
Fig. 4 is the horizontal sectional drawing of the lens driving apparatus relevant to the 1st embodiment.
Fig. 5 is the A-A sectional view of the shown lens driving apparatus of Fig. 6.
Fig. 6 shows the axle survey view of the lens driving apparatus outward appearance relevant to the 1st embodiment.
Fig. 7 shows in the lens driving apparatus relevant to the 1st embodiment, the block diagram of camera lens carrier and drive division relation.
Fig. 8 shows in the lens driving apparatus relevant to the 1st embodiment, the block diagram of the relation between imaging sensor and control part.
Fig. 9 is in the 2nd embodiment, and the axle after the shell of installation the 1st and the 2nd magnetite and the 2nd coil configuration part after shell is cut off is surveyed view.
The explanation of symbol
1. lens driving apparatus
3. shell
5. camera lens carrier
9. front side spring (spring)
16a～16d the 2nd annulus
19. the 1st annuluses
17. the 1st magnetites
18. the 2nd magnetites
25. control parts
29. auxiliaring shells
32.Z drive division
33.X-Y drive division
Embodiment
Describe the present invention the 1st embodiment in detail referring to accompanying drawing 1-8.The drive unit 1 relevant to the present embodiment is the lens driving apparatus that is assembled in the autofocus camera in mobile phone.
This lens driving apparatus 1, as shown in Figure 2, there are ring-shaped shell 3, camera lens carrier 5, are configured in framework 7 and the front side spring 9 of the optical axis direction front side of shell 3, the base 8 that is configured in shell 3 rear sides and rear side spring 11, between rear side spring 11 and shell 3, configured pad (insulating material) 15.
As shown in Figures 2 and 4, shell 3 forms roughly quadrangular barrel shape, and the 1st magnetite 17 is fixed on 4 jiaos of inner sides of shell 3.Shell 3 has outer peripheral sidewall 3a, in shell bight, shell 3 has the inner circumferential side wall 3c that outer peripheral sidewall 3a extends out with almost parallel and is connected outer peripheral sidewall 3a and the connecting portion 3b of inner circumferential side wall 3c, and outer peripheral sidewall 3a and connecting portion 3b and inner circumferential side wall 3c have formed section and become the structure of コ font together.
The plane that the 1st magnetite 17 presents from each angle front side forms general triangular, and inner side forms circular-arc along the periphery of camera lens carrier 5.Inner periphery and the outer periphery magnetic pole difference, for example: medial surface is the N utmost point, lateral surface is the S utmost point.
The inner side, 4 sides of 4 jiaos of cylindrical cases 3 is fixed with respectively the 2nd magnetite 18.The 2nd magnetite 18 as shown in Figure 3, Figure 4, adjacent and establish at circumferentially each end of the 1st magnetite 17, and seeing that from front side every two of the each limit portion that slightly presents dimetric shell 3 establishes in opposite directions.
Between the 2nd magnetite 18 of establishing in opposite directions, form space 12, space 12 becomes the space that holds the 2nd annulus 16a, 16b, 16c, 16d.2 the 2nd magnetites 18 establishing in opposite directions, 2 utmost points heteropole each other in opposite directions, for example one end is the N utmost point, one end is the S utmost point.(with reference to Fig. 4).
5 one-tenth, camera lens carrier is roughly cylindric, and its inner side is fixed wtih camera lens (not showing in figure).
As shown in Figures 1 and 2, the outer circumferential side of the 1st annulus 19 is provided with 4 the 2nd annulus 16a, 16b, 16c, 16d according to circumferentially equidistant (90 degree interval).Each the 2nd annulus 16a～16d is each forms rectangle from the side, at the outside of straight-flanked ring configuration the 2nd magnetite 18.As shown in Figures 3 and 4, the each limit portion 24,26 along optical axis direction of each the 2nd annulus 16a～16d is relative with the 2nd magnetite 18.
As shown in Figure 7, the 1st annulus 19 is connected with Z drive division 32, and each the 2nd annulus 16a～16d is connected with X-Y drive division 33, and each drive division 32,33 leads to determined electric current.Each drive division 32,33 is accepted the control signal of sending from the control part 25 of next speaking of, and leads to determine electric current to each coil.
In addition, according to the present embodiment, the 2nd annulus 16a and 16c, 16b and 16d directly connect, and at X and Y-direction totally 2 annulus 16a and 16c, 16b and 16d start to drive to same direction.
For example, from control part 25 acknowledge(ment) signals, Z drive division 32 in the time camera lens carrier 5 being shifted to focal position (moving to Z direction), the 1st annulus 19 galvanization A.
Equally, while manually supplementing, X-Y drive division 33 makes camera lens carrier 5 move to directions X after switching on to the 2nd annulus 16a and 16c, and the 2nd annulus 16b and 16d galvanization F make camera lens carrier 5 move to Y-direction.Therefore camera lens carrier will manually supplement after being moved by X-Y direction.
In addition, what Fig. 7 showed is to meet A, E, thrust direction and size that F produces according to the electric current flowing out.
Secondly,, with reference to Fig. 8, the formation of control part 25 is described.The e of approximate centre portion of imaging sensor 31, a group of directions X sensor 38a, the 38b establishing in opposite directions together with the Y-direction of the periphery at imaging sensor 31 and imaging sensor 31, and be connected to control part 25 with one group of Y-direction sensor 39a, 39b that directions X is established in opposite directions.Control part 25 is provided with focal point control portion 41 and manual control part 43, each contrast storage part 45 and compares portion 46 and calculating part 47.Then, compare portion 46, compare with timeliness deviation memory contrast peak in present contrast peak (high regional part), after the calculating part 47 calculation contrast peak position deviation amount that the high peak positions of contrast and storage part are remembered now, send and drive signals to each drive division 32,33 of correspondence.
Specifically realize in the time that lens supports body 5 moves to focal position by focal point control portion 41, lens supports body 5 is mobile so that the maximum peak position in central part e (with reference to Fig. 8) to optical axis direction (Z direction).
On the other hand, by manual auxiliary positive portion 43, be respectively in directions X sensor 38a, 38b at 2, after the comparison peak that each storage part 45 is remembered and present comparison peak are compared by comparing section 46, then by calculating part 47 its departures of calculation.Further calculating the mean value of 2 directions X sensor 38a, 38b, is the departure of auxiliary positive directions X, and the drive control signal that is connected with specified current flow E on the 2nd annulus 16a and 16c is sent to X-Y drive division 33.
Equally, about 2 Y-direction sensor 39a, 39b, after comparing, carry out identical calculation, on the 2nd annulus 16b and 16d, on logical, determine electric current F, drive control signal is sent to X-Y drive division 33.
As shown in Figure 2, tabular when state of nature before front side spring 9 assembling, forms the ring-type 9a of planar rectangular, interior all 9b of the flat circle arcuation that in periphery sidepiece 9a, week installs, form with 4 wrist 9c that are connected peripheral part 9a and interior perimembranous 9b, the distortion of Z direction and X-Y direction is easy to.
In addition, the periphery sidepiece 9a of front side spring 9 is sandwiched between framework 7 and shell 3, and the 9b of inner circumferential side portion is fixed on the front end of camera lens carrier 5.The peripheral part 11a of rear side spring 11 is sandwiched between base 8 and rear pad 15, and the 11b of inner circumferential side portion is fixed on the rear end of camera lens carrier 5.Therefore, camera lens carrier 5 can be able to move freely in Z direction (fore-and-aft direction) and X-Y direction by front side spring 9 and rear spring 11.
Then, when camera lens carrier 5 is shifted to front, the fore-and-aft direction comprehensive strength of camera lens carrier 5 front side springs 9 and rear spring 11, the magnetic force producing between the 1st annulus 19 and the 1st magnetite 17 stops in balanced mutually position.
When camera lens carrier 5 is moved by X-Y direction, front side spring 9 and rear spring 11 by the comprehensive strength of X-Y direction spring and, and the position that the electromagnetic force producing between each self-corresponding the 2nd magnetite 18 of the 2nd annulus 16a～16d checks and balance stops.
Next, the just assembling of the lens driving apparatus 1 relevant to the embodiment of the present invention, effect and effect describe.
The 1st annulus 19 is connected with Z drive division 32 with leading-out terminal and rear side spring 11 between each lead-in wire terminal, and the 2nd annulus 16a～16d coil 16a respect to one another and 16c, after 16b connects with 16d, are connected to X-Y driving 33 by lead-in wire terminal and leading-out terminal.
The driving of the lens driving apparatus 1 relevant to the present embodiment as shown in Figures 7 and 8, about control part 25, focal point control portion 41 relatively, from drawing a portrait 31 high territory composition (contrast) peak values that receive simultaneously, to focus position, moves linearly camera lens carrier 5 to Z direction.
When camera lens carrier 5 moves linearly to Z direction, by focal point control portion 41 give electromagnetic force between that the 1st annulus 19 input current value A produce and magnetite 17 and, front side spring 9, the comprehensive strength that spring assisted parts material 14 and rear spring 11 have stops in balanced mutually position.
In addition, control part 25 carries out the control of camera lens carrier 5 by X-Y direction by manual control part 43.Manually assisted parts 43 is by directions X sensor 38a, 38b, at each directions X contrast peak value, the contrast peak that comparing section 46 stores with reservoir 45 with different time sections is compared, find different storage capacitys at calculating part 47, calculate at 2 directions X sensor 38a, the mean value of the peak departure of 38b, sends to X-Y drive division 33 and drives signal.X-Y drive division 33, based on coming from the driving signal that manually supplements 43, is given the 2nd annulus 16a, the 16c energising of directions X, and camera lens carrier 5 is moved towards directions X.
Equally in Y-direction, manually supplement 43 by Y-direction sensor 39a, 39b respectively at the contrast peak value of Y-direction, follow with now free deviation storage comparison peak and compare and find its departure, calculate 2 Y-direction sensor 38a, the mean value of the peak departure of 38b, sends a signal to X-Y drive division 33.X-Y drive division 33, based on manually supplementing the 43 driving signals of sending, is given after the 2nd annulus 16b, the 16d energising of Y-direction, and camera lens carrier 5 is moved towards Y-direction.
In the 2nd annulus 16a～16d, the contrary direction energising each other of right edge portion 24 and back, left side portion 26, as shown in Figure 4, so the right side magnetite 18a left side magnetite 18b magnetic pole each other opposite sex relative with left side portion 26 that right edge portion 24 is relative, thereby the thrust that can make left side portion 24 and right edge portion 26 produce equidirectional obtains larger thrust.
By the present embodiment, can make camera lens carrier 5 focus on mobile (moving to Z direction) and manually supplement (by the movement of X-Y direction).The outer peripheral face of camera lens carrier 5 arranges the 1st annulus 19 Hes according to circumferential certain interval, the 2nd annulus 16a～16d, 3, shell (base) is arranged at the magnetite 17,18 that each annulus is relative, so can seek the feature of miniaturization simple in structure.
Particularly, so the camera lens carrier 5 of having fixed the 1st annulus 19 and the 2nd annulus 16a～16d is inserted the 1st magnetite 17 and the 2nd magnetite 18 is fixed on to rear flank assembling in the shell of inner circumferential side face, just can assemble according to the same operation steps of lens driving program only moving to Z direction in the past, therefore assembling is than being easier to.
For the 2nd annulus 16a～16d being fixed on camera lens carrier 5 being set to 12 places, space between the 2nd relative magnetite 18,18, camera lens carrier 5 can be assembled from optical axis direction inserts shell 3, so location positioning when shell 3 and carrier 5 are assembled is very easy to.
Next, explain other embodiment of the present invention, in explanation embodiment once, there iing the part of same action effect with the 1st above-mentioned embodiment, the detailed description of omitting its part according to the prosign of mark, the following describes the main place different from the first embodiment in other embodiment of next explanation.
With reference to Fig. 9, the present invention the 2nd embodiment is described.In the 2nd embodiment, between the 1st magnetite 17 and the 2nd magnetite 18, be provided with auxiliaring shell 29.Auxiliaring shell 29 roles are to support the 2nd magnetite 18, can improve the magnetic circle density of the 2nd magnetite 18.
Other structure is identical with above-mentioned the 1st embodiment.
The present invention, is not limited to above-described embodiment, may realize without departing from the spirit and scope of the present invention all distortion.For example: in the above-described embodiments, manual examination (check) also can be undertaken by acceleration sensor helix sensors.
The 2nd annulus 16a～16d is not limited only to repeat to be arranged on a kind of this method of outer peripheral face of the 1st annulus 19, also can configure with optical axis direction inconsistent.
The 2nd annulus 16a～16d respectively arranges 2 at X and Y-direction, can be also 1 of directions X, 1 of Y-direction.
According to contrary 2 the 2nd magnetites 18 that are circumferentially with, but in each the 2nd annulus 16a～16d, also can establish the 2nd magnetite at a 2nd annulus 16a～16d.
Claims (5)
1. lens driving apparatus, it is characterized in that, comprise ring-shaped shell, be located at the camera lens carrier at interior week support camera lens of ring-shaped shell ring inner side, be configured in the 1st annulus of camera lens carrier periphery, camera lens carrier has been installed the 2nd annulus of plural number outward every 90 degree by all veers, keep the base of ring-shaped shell, one end is fixed on the base other end and is fixed on the spring on camera lens carrier, be fixed on multiple the 1st magnetites and multiple the 2nd magnetite of ring-shaped shell inner peripheral surface, and control the control part of each coil electricity; The 1st magnetite is equidistant is located at ring-shaped shell circumferentially and the position configuration relative with the 1st annulus outer peripheral face, the 2nd magnetite is located between the 1st adjacent magnetite and is configured in the opposite of the outer peripheral face of the ring of each the 2nd annulus, control part moves camera lens carrier to optical axis direction time, give the 1st annulus energising, when moving as for optical axis, camera lens carrier directly when crossing X-Y direction, gives the 2nd fixed annulus energising.
2. lens driving apparatus as claimed in claim 1, is characterized in that, the 2nd annulus is orthogonal from the side, and each the 2nd magnetite is oppositely arranged in 2 limit portions along camera lens optical axis direction, and the 2nd annulus is configured in the space between the 2nd relative magnetite.
3. lens driving apparatus as claimed in claim 1, is characterized in that, ring-shaped shell squarely is provided with the 1st magnetite in each bight of ring-shaped shell.
4. autofocus camera, is characterized in that possessing the imaging sensor that the lens driving apparatus described in claim 1 or 2 and camera lens carrier arrange in lens imaging side.
5. the mobile phone with camera, is characterized in that carrying the autofocus camera described in claim 4.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009275025A JP2011118131A (en) | 2009-12-03 | 2009-12-03 | Lens driving device, autofocus camera, and camera-equipped cellphone |
| JP2009-275025 | 2009-12-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102087398A CN102087398A (en) | 2011-06-08 |
| CN102087398B true CN102087398B (en) | 2014-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010573323.1A Active CN102087398B (en) | 2009-12-03 | 2010-12-03 | Lens driving device, autofocus camera, and camera-equipped mobile terminal |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2011118131A (en) |
| CN (1) | CN102087398B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2816403A4 (en) * | 2012-02-14 | 2015-11-04 | Mitsumi Electric Co Ltd | Lens driving device and camera |
| CN102798959B (en) * | 2012-08-20 | 2014-10-29 | 爱佩仪光电技术（深圳）有限公司 | Voice coil motor structure capable of realizing camera lens controlled tilt |
| CN103869443B (en) * | 2012-12-11 | 2017-10-17 | 新思考电机有限公司 | Lens driver, auto-focusing camera and mobile terminal device |
| JP6229187B2 (en) * | 2013-05-27 | 2017-11-15 | 新シコー科技株式会社 | Autofocus camera and electronic device with camera |
| JP6909712B2 (en) * | 2017-11-16 | 2021-07-28 | 新思考電機有限公司 | Support mechanism, optical member drive device, camera device and electronic device |
| JP6728122B2 (en) * | 2017-11-20 | 2020-07-22 | 株式会社タムロン | Actuator, lens unit including the same, camera |
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|---|---|---|---|---|
| JP4774873B2 (en) * | 2005-08-30 | 2011-09-14 | 日立金属株式会社 | Actuator |
| JP2008197388A (en) * | 2007-02-13 | 2008-08-28 | Nikon Corp | Image shake correction device, lens barrel, and optical apparatus |
| JP4919422B2 (en) * | 2007-07-03 | 2012-04-18 | シコー株式会社 | Lens driving device manufacturing method, lens driving device, camera and camera-equipped mobile phone |
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- 2009-12-03 JP JP2009275025A patent/JP2011118131A/en active Pending
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| CN1185635C (en) * | 2001-06-08 | 2005-01-19 | 三星电子株式会社 | Actuator for optical pickup device |
| CN2862066Y (en) * | 2005-12-31 | 2007-01-24 | 一品国际科技股份有限公司 | Automatic focusing scene module |
| CN101178470A (en) * | 2006-11-08 | 2008-05-14 | 日本电产三协株式会社 | Lens driving apparatus and its manufacturing method |
| CN101520534A (en) * | 2008-02-29 | 2009-09-02 | 德昌电机(深圳)有限公司 | Lens driving device |
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Also Published As
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| CN102087398A (en) | 2011-06-08 |
| JP2011118131A (en) | 2011-06-16 |
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Owner name: XINSIKAO ELECTRIC MOTOR CO., LTD. Free format text: FORMER OWNER: SIKAO ELECTRIC MOTOR (SHANGHAI) CO., LTD. Effective date: 20150626 |
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Effective date of registration: 20150626 Address after: 314112 Jiashan City, Jiaxing province Huimin County Street, No., Jia Jia Road, building 3, 1 floor, 58 Patentee after: New math courses Electric Machine Co., Ltd Address before: 201613 No. 38 Teng Teng Road, Shanghai, Songjiang District Patentee before: Shicoh Motor (Shanghai) Co., Ltd. |