CN101512408A - Lens drive device, camera, and mobile phone with camera - Google Patents
Lens drive device, camera, and mobile phone with camera Download PDFInfo
- Publication number
- CN101512408A CN101512408A CNA2007800005342A CN200780000534A CN101512408A CN 101512408 A CN101512408 A CN 101512408A CN A2007800005342 A CNA2007800005342 A CN A2007800005342A CN 200780000534 A CN200780000534 A CN 200780000534A CN 101512408 A CN101512408 A CN 101512408A
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- China
- Prior art keywords
- driving shaft
- optical axis
- camera
- zoom lens
- drive shaft
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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
- G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
- G02B7/102—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens controlled by a microcomputer
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
- Studio Devices (AREA)
Abstract
Provided are a lens drive device having a zooming function and a focus function, using a reduced number of parts, and having a reduced size, a camera, and a mobile phone with a camera. The lens drive device has a first drive shaft (21) installed along the optical axis, a first vibrating member (17) to which the base end of the first drive shaft (21) is fixed, a second drive shaft (22) installed along the optical axis, and a second vibrating member (18) fixed to the base end of the second drive shaft (22). The first and second vibrating members (17, 18) vibrate the respective drive shafts in the optical axis direction. One end of a zoom lens holder (3) is pressed against the first drive shaft (21) and is moved along the first drive shaft (21) when first drive shaft (21) is vibrated. The other end of the zoom lens holder (3) is engaged with the second drive shaft (22) and guided for movement. One end of a focus lens holder (5) is pressed against the second drive shaft (22) and is moved along the second drive shaft (22) when the second drive shaft (22) is vibrated. The other end of the focus lens holder is engaged with the first drive shaft (21) and guide for movement.
Description
Technical field
The present invention relates to possess the lens driver and the camera thereof of camera of auto-focus function of band optical zoom and the mobile phone that is equipped with the band camera of camera.
Background technology
Structure below in patent documentation 1, disclosing, promptly possess lens sleeve and drive the driving shaft of lens sleeve and the guide member that the guiding lens sleeve moves on optical axis direction in framework, driving shaft vibrates on optical axis direction and lens sleeve is moved along optical axis direction.In this patent documentation 1 disclosed technology, for a lens sleeve, together dispose its driving shaft and guide member along optical axis direction.
Patent documentation 1: the Jap.P. spy opens the 2006-214736 communique
On the other hand, demand is carried the camera of the auto-focus function with band optical zoom in mobile phone.Be used for the lens driver of this camera, if desire is used the technology of patent documentation 1, then the driving shaft that driving shaft of using except the zoom lens sleeve and condenser lens sleeve are used, the guide member of zoom lens sleeve and the guide member of condenser lens sleeve also must be arranged, therefore cause the problem that increases parts number of packages and lens driver maximization.
Summary of the invention
Therefore, the objective of the invention is to, provide to have zoom function and focusing function, and can realize reducing the lens driver of parts number of packages and miniaturization and the mobile phone of camera and band camera.
According to technical scheme 1 described invention, the zoom lens sleeve, by being crimped on first driving shaft, an end utilize the vibration of first driving shaft to move, and guide mobile by the other end being incorporated into second driving shaft, similarly, the condenser lens sleeve utilizes the vibration of second driving shaft to move by an end is crimped on second driving shaft, and moves by the other end being incorporated into the guiding of first driving shaft.That is, utilize the guide member of the driving shaft of side's lens sleeve, thereby do not need other guide member as the opposing party's lens sleeve.Therefore, in lens driver, can omit guide member, thereby can reduce the parts number of packages, the miniaturization of implement device with respect to each lens sleeve with zoom function and focusing function.
According to technical scheme 2 described inventions, acquisition of technology scheme 1 described action effect, and when lens driver is installed, only to a sidewall insert logical from another sidewall of framework the front end of each driving shaft, just can be with the chimeric chimeric recess that is fixed in the framework inner face of front end, assembling easily.And two driving shafts all can insert logically from the homonymy of framework, thereby install and are more prone to.
Because vibrating mass is disposed at the outside surface of framework, therefore can reduce vibrating mass to being disposed at the vibration effect of inner parts, for example give influence with position probing and position control signal.
According to technical scheme 3 described inventions, can provide the camera of a kind of acquisition of technology scheme 1 or 2 described action effects.
According to technical scheme 4 described inventions, can provide a kind of mobile phone of band camera of acquisition of technology scheme 3 described action effects.
Description of drawings
Fig. 1 is the sectional view that the lens driver that present embodiment relates to is blocked in A-A position shown in Figure 3.
Fig. 2 is the sectional view at the B-B place of Fig. 1.
Fig. 3 is the front view of the lens driver shown in Figure 1 seen from the reference object side.
Fig. 4 is a sectional view of schematically representing the structure of driving shaft and vibrating mass.
Symbol description: 1... lens driver; 3... zoom lens sleeve; 5... condenser lens sleeve; 7... zoom lens sleeve drive unit; 9... condenser lens sleeve drive unit; 17... first vibrating mass; 18... second vibrating mass; 21... first driving shaft (driving shaft of zoom lens sleeve); 22... second driving shaft (driving shaft of condenser lens sleeve); 31... pressure contact portion (pressure contact portion of zoom lens sleeve); 33... guide portion (guide portion of zoom lens sleeve); 35... pressure contact portion (pressure contact portion of condenser lens sleeve); 37... guide portion (guide portion of condenser lens sleeve).
Embodiment
Below, embodiments of the present invention are described with reference to the accompanying drawings.Fig. 1 is the sectional view that the lens driver that present embodiment relates to is blocked in A-A position shown in Figure 3.Fig. 2 is the sectional view at the B-B place of Fig. 1.Fig. 3 is the front view of the lens driver shown in Figure 1 seen from the reference object side.Fig. 4 is a sectional view of schematically representing the structure of driving shaft and vibrating mass.
The lens driver 1 that present embodiment relates to is the lens driver 1 of autofocus camera that is loaded into the band optical zoom of mobile phone.
As shown in Figure 1, zoom lens sleeve 3 keeps optical zoom lens 14, and condenser lens sleeve 5 keeps condenser lens 16, and optical zoom lens 14 and condenser lens 16 are set to same optical axis, and image space is provided with imageing sensor 11 on optical axis.
Zoom lens sleeve drive unit 7 comprises along first driving shaft 21 of the optical axis configuration of zoom lens 14; Constitute with first vibrating mass 17 of the cardinal extremity of fixing first driving shaft 21.First vibrating mass 17 forms vibration first driving shaft 21 on optical axis direction.
Condenser lens sleeve drive unit 9 comprises along second driving shaft 22 of optical axis setting and fixes second vibrating mass 18 of the cardinal extremity of second driving shaft 22.Second vibrating mass 18 forms vibration second driving shaft 22 on optical axis direction.
As shown in Figure 2, condenser lens sleeve 5, at one end portion has the pressure contact portion 35 with 22 crimping of second driving shaft, has with the 1st driving shaft 21 in the other end to combine the guide portion 37 that moves with guided focused lens sleeve 5.With zoom lens sleeve 3 similarly, at the pressure contact portion 35 of condenser lens sleeve 5, in through hole, be pressed into second driving shaft 22, guide portion 37 forms the U word shapes, disposes first driving shaft 21 in the U word.
First driving shaft 21 and second driving shaft 22 are configured in to clip on each opposed position, sleeve 3,5 ground and form.
As shown in Figure 1, on framework 2, on a sidewall 2a who is positioned at optical axis direction one side (imaging side), be formed with first chimeric recess 38 of chimeric first driving shaft, 21 front ends and the second chimeric recess 39 of chimeric second driving shaft, 22 front ends, and on another sidewall 2b that is positioned at optical axis direction opposite side (reference object side), with the first chimeric recess, 38 opposed positions on be formed with the through hole 40 of first driving shaft, with the second chimeric recess, 39 opposed positions on be formed with the through hole 42 of second driving shaft 22.
First driving shaft 21 is in the reference object side, from the outside of framework 2 front end inserted and to pass to through hole 40, embed and remain in the base end side of first chimeric recess 38, the first driving shafts 21, remain in another sidewall 2b of framework across the rubber system sleeve (not shown) that is arranged at through hole 40.Second driving shaft 22 is inserted front end from the outside of framework 2 and to be passed to through hole 42 similarly, embeds and remain in the second chimeric recess 39, and base end part remains in framework 2 across the rubber system sleeve that is arranged at through hole 42.
First and second vibrating mass 18,19 is disposed at the outside surface (outside surface of framework 2) of another sidewall 2b respectively.First and second vibrating mass 17,18 is respectively identical construction, as shown in Figure 4, has opposed piezoelectric element of imaging side (a side opposite electrode) 23 and the opposed piezoelectric element of reference object side (opposite side opposite electrode) 25; And the oscillator 19 between these opposed piezoelectric elements 23,25, the cardinal extremity of driving shaft 21,22 is fixed in oscillator 19.Oscillator 19 is leaf springs of copper coin etc.In addition, in the present embodiment, the reference object side is the side of looking in the distance of optical zoom, and the imaging side is the Zoom Side of optical zoom.
On opposed piezoelectric element 23 of imaging side and the opposed piezoelectric element 25 of reference object side, be connected with the power control part 27 of supplying with pulsating current, when pulsating current is supplied with the opposed piezoelectric element 25 of reference object side, oscillator 19 vibrates on repeated deformation ground by utilizing reacting force to return the original position thus to the imaging side shifting.Equally, when pulsating current was supplied with the opposed piezoelectric element 23 of imaging side, oscillator 19 carried out the shifting ground vibration to the reference object side shifting repeatedly by utilizing returning of reacting force.
Below, describe at the zoom lens position detecting device 43 that detects zoom lens sleeve 3 positions and the condenser lens position detecting device 45 of detection optical condenser lens sleeve 5 positions with reference to Fig. 2.Zoom lens position detecting device 43 and condenser lens position detecting device 45 are same structure, are respectively alternately to dispose the magnetic scale 57 of different magnetic pole (the S utmost point and the N utmost point) and MR sensor 59 formations that detect magnetic field intensity by the optical axis direction along lens.Magnetic scale 57 is fixed in framework 2 along optical axis direction, MR sensor 59 is individually fixed in each sleeve 3,5, and together move with each sleeve 3,5.
Below, will the effect and the effect of first embodiment be described.Present embodiment is that mobile zoom lens sleeve 3 cause optical zooms change multiplying power, and mobile focusing lens sleeve 5 is adjusted focal length.
When zoom lens sleeve 3 is moved to the side of looking in the distance (reference object side), with the opposed piezoelectric element 23 of imaging side of current supply vibrating mass 17 of pulsation necessarily, so that oscillator 19 vibrations.To be out of shape to the side-prominent mode of reference object, first driving shaft 21 is to the reference object side shifting when supplying with pulsating current for oscillator 19, and zoom lens sleeve 3 has friction force between pressure contact portion 31 places and driving shaft 21, therefore moves to the reference object side.Then, when oscillator 19 promptly turns back to original position by reacting force, then since inertial force only first driving shaft 21 return initial position simultaneously with oscillator 19.By carrying out this action repeatedly, zoom lens sleeve 3 moves to the reference object side along first driving shaft 21.Similarly, when pulsating current was supplied with the opposed piezoelectric element 25 of reference object side, then zoom lens sleeve 3 moved to the imaging side.In addition, in condenser lens sleeve 5, by pulsating current being supplied with opposed piezoelectric element 23 of imaging side or the opposed piezoelectric element 25 of reference object side, can with the zoom lens sleeve equally to reference object side or imaging side shifting.
For the electric current of supplying with each piezoelectric element 23,25, its voltage V is tens of V, and its frequency H is tens of KHz, can realize moving smoothly.In addition, pulsating current can change the translational speed of zoom lens sleeve 3 by changing frequency H.
Similarly, in condenser lens sleeve 5, because guide portion 37 also combines with first driving shaft 21, what therefore can prevent from will to take place when mobile waving or rotating, and guided focused smoothly lens sleeve 5 is mobile simultaneously.
In the present embodiment, zoom lens sleeve 3 combine with the driving shaft (second driving shaft) 22 of condenser lens sleeve 5 guide mobile, condenser lens sleeve 5 combine with the driving shaft (first driving shaft) 21 of zoom lens sleeve 3 guide mobile, driving shaft 21,22 is utilized as guide member mutually, do not need to be provided with in addition guide member, owing to can omit guide member, thereby can reduce the parts number of packages, the miniaturization of implement device.
When assembling lens driving device 1, only logical, just can be chimeric and be fixed in the chimeric recess 38,39 of framework inner face with front end by the front end of each driving shaft 21,22 is inserted to a sidewall 2a from another sidewall 2b of framework 2, assemble easily.And 2 driving shafts 21,22 all can be inserted from the homonymy (reference object side) of framework 2 and lead to, thereby installation is more prone to.
Vibrating mass 17,18 is disposed at the outside surface of framework 2 respectively, therefore can reduces the vibration effect that 17,18 pairs of vibrating mass are disposed at inner parts, for example to the influence of communicating by letter of position probing and position control.
First and second vibrating mass 17,18 is respectively oscillator 19 is disposed at structure between the opposed piezoelectric element 23,25, therefore adopts the vibrating mass of thinner thickness, also can realize the reliable driving of each lens sleeve 3,5.
Claims (according to the modification of the 19th of treaty)
1. a lens driver possesses: the zoom lens sleeve that keeps zoom lens; Keep being configured in the condenser lens sleeve of the condenser lens on the zoom lens optical axis; First driving shaft along the optical axis setting; Fix first vibrating mass of the cardinal extremity of first driving shaft; Second driving shaft along the optical axis setting; Be fixed in second vibrating mass of the cardinal extremity of second driving shaft, first and second vibrating mass vibrates driving shaft along optical axis direction separately, the zoom lens sleeve, utilize the vibration of first driving shaft to move by an end being crimped on first driving shaft, and be directed moving by the other end being incorporated into second driving shaft along first driving shaft; The condenser lens sleeve, utilize the vibration of second driving shaft to move by an end being crimped on second driving shaft along second driving shaft, and be directed moving by the other end being incorporated into first driving shaft, it is characterized in that, on the framework of lens driver, and on a sidewall that is positioned at optical axis direction one side, be formed with the first chimeric recess chimeric with the first driving shaft front end, with the second chimeric recess chimeric with the second driving shaft front end, be positioned on another sidewall of optical axis direction opposite side, and with each opposed position of chimeric recess on be formed with the through hole of each driving shaft, first driving shaft is to be installed on the first chimeric recess by inserting logical first through hole from the outside of framework, second driving shaft is to be installed on the second chimeric recess by inserting logical second through hole from the outside of framework, and first and second vibrating mass is disposed at the outside surface of framework.
2. (deletion)
3. a camera is characterized in that, has described lens driver of claim 1 and the imageing sensor that is arranged on the optical axis.
4. the mobile phone with camera is characterized in that, is equipped with the described camera of claim 3.
Claims (4)
1. a lens driver possesses: the zoom lens sleeve that keeps zoom lens; Keep being configured in the condenser lens sleeve of the condenser lens on the zoom lens optical axis; First driving shaft along the optical axis setting; Fix first vibrating mass of the cardinal extremity of first driving shaft; Second driving shaft along the optical axis setting; Be fixed in second vibrating mass of the cardinal extremity of second driving shaft, first and second vibrating mass vibrates driving shaft along optical axis direction separately, it is characterized in that, the zoom lens sleeve, utilize the vibration of first driving shaft to move by an end being crimped on first driving shaft, and be directed moving by the other end being incorporated into second driving shaft along first driving shaft; The condenser lens sleeve utilizes the vibration of second driving shaft to move along second driving shaft by an end being crimped on second driving shaft, and is directed moving by the other end being incorporated into first driving shaft.
2. lens driver according to claim 1, it is characterized in that, on the framework of lens driver, and on a sidewall that is positioned at optical axis direction one side, be formed with the first chimeric recess chimeric with the first driving shaft front end, with the second chimeric recess chimeric with the second driving shaft front end, be positioned on another sidewall of optical axis direction opposite side, and with each opposed position of chimeric recess on be formed with the through hole of each driving shaft, first driving shaft is to be installed on the first chimeric recess by inserting logical first through hole from the outside of framework, second driving shaft is to be installed on the second chimeric recess by inserting logical second through hole from the outside of framework, and first and second vibrating mass is disposed at the outside surface of framework.
3. a camera is characterized in that, has claim 1 or 2 described lens drivers and the imageing sensor that is arranged on the optical axis.
4. the mobile phone with camera is characterized in that, is equipped with the described camera of claim 3.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP023759/2007 | 2007-02-02 | ||
| JP2007023759 | 2007-02-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101512408A true CN101512408A (en) | 2009-08-19 |
Family
ID=39681374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007800005342A Pending CN101512408A (en) | 2007-02-02 | 2007-04-12 | Lens drive device, camera, and mobile phone with camera |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101512408A (en) |
| WO (1) | WO2008096455A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111897084A (en) * | 2014-10-29 | 2020-11-06 | 新思考电机有限公司 | Lens driving device, camera device and electronic equipment |
| US11067769B2 (en) | 2018-02-16 | 2021-07-20 | Canon Kabushiki Kaisha | Lens barrel and image capturing apparatus |
| CN115268006A (en) * | 2021-04-14 | 2022-11-01 | 新思考电机有限公司 | Lens driving device, camera device, and electronic apparatus |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101940478B1 (en) * | 2012-05-07 | 2019-01-21 | 엘지이노텍 주식회사 | Camera Module |
| EP3731389B1 (en) | 2012-05-09 | 2023-07-19 | LG Innotek Co., Ltd. | Voice coil motor |
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| JPH04147107A (en) * | 1990-10-09 | 1992-05-20 | Canon Inc | Equipment with driving mechanism |
| JPH0894905A (en) * | 1994-09-26 | 1996-04-12 | Sony Corp | Lens barrel |
| JP3417390B2 (en) * | 2000-08-01 | 2003-06-16 | ミノルタ株式会社 | Actuator using electromechanical transducer |
| JP4144171B2 (en) * | 2000-09-14 | 2008-09-03 | コニカミノルタホールディングス株式会社 | Drive device using electro-mechanical transducer |
| JP2002131611A (en) * | 2000-10-30 | 2002-05-09 | Minolta Co Ltd | Lens driving mechanism |
| JP4276914B2 (en) * | 2003-09-18 | 2009-06-10 | オリンパス株式会社 | Vibration wave linear motor and driving method thereof |
| JP2006121886A (en) * | 2004-09-22 | 2006-05-11 | Fuji Photo Film Co Ltd | Driver, lens unit, light quantity controller, and imaging apparatus |
| JP2006171172A (en) * | 2004-12-14 | 2006-06-29 | Fuji Photo Film Co Ltd | Method of detecting displacement quantity |
| JP2006303955A (en) * | 2005-04-21 | 2006-11-02 | Konica Minolta Opto Inc | Image-taking device and electronic equipment |
| JP3854302B2 (en) * | 2006-04-04 | 2006-12-06 | 京セラ株式会社 | Camera module and portable terminal using the camera module |
-
2007
- 2007-04-12 CN CNA2007800005342A patent/CN101512408A/en active Pending
- 2007-04-12 WO PCT/JP2007/058029 patent/WO2008096455A1/en active Application Filing
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111897084A (en) * | 2014-10-29 | 2020-11-06 | 新思考电机有限公司 | Lens driving device, camera device and electronic equipment |
| CN111897084B (en) * | 2014-10-29 | 2022-04-19 | 新思考电机有限公司 | Lens driving device, camera device and electronic equipment |
| US11067769B2 (en) | 2018-02-16 | 2021-07-20 | Canon Kabushiki Kaisha | Lens barrel and image capturing apparatus |
| CN110161647B (en) * | 2018-02-16 | 2022-04-26 | 佳能株式会社 | Lens barrel and image pickup apparatus |
| CN115268006A (en) * | 2021-04-14 | 2022-11-01 | 新思考电机有限公司 | Lens driving device, camera device, and electronic apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008096455A1 (en) | 2008-08-14 |
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Open date: 20090819 |