CN103018872B - Lens driver, camera apparatus and the mobile terminal apparatus with camera - Google Patents
Lens driver, camera apparatus and the mobile terminal apparatus with camera Download PDFInfo
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- CN103018872B CN103018872B CN201110297966.2A CN201110297966A CN103018872B CN 103018872 B CN103018872 B CN 103018872B CN 201110297966 A CN201110297966 A CN 201110297966A CN 103018872 B CN103018872 B CN 103018872B
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- 238000001514 detection method Methods 0.000 claims description 23
- 230000000694 effects Effects 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000005489 elastic deformation Effects 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
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- 238000000034 method Methods 0.000 description 3
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Abstract
The invention provides the lens driver making framework miniaturization, camera apparatus and the mobile terminal apparatus with camera, it comprises support lens supports body 3 driving shaft 5 with moving freely; Be configured in an end of driving shaft 5, and make driving shaft 5 that the vibrating mass 7 of vibration occur; The foursquare framework 9 of collecting Lens supporter 3, driving shaft 5 and vibrating mass 7; And on rear side of the optical axis direction being configured in lens supports body 3, and be rectangular imageing sensor 11.Imageing sensor 11 be configured in framework 9 central portion to make two foursquare adjacent limit 9a of a rectangular limit 11a and framework 9,9b is relative; Vibrating mass 7 is 2 Rotational Symmetries, and it has: two the limit 7as close abreast with two limit 9a, 9b, 7b, and, and the limit 7c that a limit 11a is close abreast.Driving shaft 5 is arranged on the rotation axes of symmetry 7d of vibrating mass 7.
Description
Technical field
The invention relates to lens driver, there is the camera apparatus of this lens driver, and there is the mobile terminal apparatus with camera of this camera apparatus.
Background technology
Be mounted in in the lens driver in the camera apparatus in the mobile terminal apparatus of camera, driving shaft fixed on the piezoelectric element and makes it vibration, the lens supporter be frictionally engaged with driving shaft is moved along lens axis direction.Such as, so a kind of device is disclosed in patent documentation 1 (the open JP 2008-233231 publication of patent), that is: being that dimetric framework and dimetric imageing sensor are configured to each limit respectively and parallel from shape during optical axis direction, and dimetric piezoelectric element is configured in the bight of framework.
Summary of the invention
With the lens driver in the camera apparatus that the mobile terminal apparatus of camera is built-in, the requirement of its miniaturization is stronger.But, as the formation in patent documentation 1, even if want that the size by reducing framework reduces lens driver, still there is unnecessary space more, the more difficult such problem of miniaturization.
The present invention, in order to solve above-mentioned problem, its objective is: provide the size reducing framework to carry out the lens driver of miniaturization, camera apparatus and the mobile terminal apparatus with camera.
1st invention is a kind of lens driver, comprising: driving shaft, and it supports the lens supports body of support of lens at optical axis direction with moving freely; Vibrating mass, it is configured in an end of described driving shaft, and described driving shaft is vibrated at optical axis direction; Framework, it is square from optical axis direction, and accommodates described lens supports body, described driving shaft and described vibrating mass; And image sensor, it is rectangle from optical axis direction, and on rear side of the optical axis direction being configured in described lens supports body.Described image sensor is configured in the central portion of described framework to make a rectangular limit relative with two foursquare adjacent limits of described framework.Described vibrating mass is 2 non-rotational symmetric shape, and from optical axis direction, it comprises: two limits, and it is abreast close to two foursquare described adjacent limits of described framework; And a limit, it is abreast close to a rectangular described limit of described image sensor.Described driving shaft is arranged on the rotationally symmetric axis of described vibrating mass.
If each limit of framework and imageing sensor is configured with paralleling respectively, compared with preceding solution, adopt onesize vibration section material, imageing sensor just and vibrating mass can overlap.Therefore, the larger vibrating mass of area cannot be configured.Further, even if configuration image sensor is rectangular relative with two foursquare adjacent limits of framework to make, once configure dimetric vibrating mass, the bight of vibrating mass just and imageing sensor coincide.Therefore, from result, still the larger vibrating mass of area cannot be configured.1st invention is owing to adopting preceding solution, less from the redundant space inside framework during optical axis direction.Therefore, it is possible to reduction framework, make lens driver miniaturization.
Described lens driver, further, described vibrating mass is 4 Rotational Symmetries.
The symmetrical feature of vibration section material is stronger, and the displacement of its driving shaft obtained is larger, thus vibrating mass can be done little, therefore, can make lens driver miniaturization further.
Described lens driver, comprises further: driving shaft and described vibrating mass described in two groups that support described lens supports body, and driving shaft described in a group and described vibrating mass support a described lens supports body; Described in these two groups, driving shaft and described vibrating mass are configured in the two opposite sides of described imageing sensor respectively, and described imageing sensor is positioned on the diagonal line of foursquare described framework.
The contrary both sides of these two groups difference configuration image sensors.Therefore, two assembly are set to the space be of similar shape with area, all have redundant space less in framework during optical axis direction and between the described both sides of imageing sensor.Therefore, it is possible to reduction framework, make lens driver miniaturization.
Described lens driver, further, another diagonal line of described framework arranges the position detection unit detecting the position of lens supports body described in each.
Another diagonal line of framework configures the position detection unit detecting the position of each lens supports body, position detection unit is configured in rather spacious the diagonal line side of framework, even if so configure the size that position detection unit also can reduce framework.Therefore, it is possible to make lens driver miniaturization.
2nd invention is a kind of camera apparatus, it is characterized in that comprising: as described in lens driver.2nd invention can obtain the technique effect identical with the 1st invention.
3rd invention is a kind of mobile terminal apparatus with camera, it is characterized in that comprising: as described in camera apparatus.3rd invention can obtain the technique effect identical with the 2nd invention.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of a part for lens driver in the present invention the 1st example, which omits the part in cross section when cutting off along C-C in Fig. 2.
Fig. 2 is the longitudinal section of the lens driver in the present invention the 1st example, and it is along the cross section in Fig. 3 during A-A cut-out.
Fig. 3 is the cross-sectional view of other parts in the present invention the 1st example, and it is along the cross section in Fig. 2 during D-D cut-out.
Fig. 4 is the cross-sectional view of a part for lens driver in the present invention the 1st example, and it is cross section when cutting off along C-C in Fig. 2.
Fig. 5 is the cross-sectional view of a part for lens driver in the present invention the 2nd example, and it is equivalent to the Fig. 1 in the 1st example.
1 lens driver
3,13 lens supports bodies
3a, 13a pressure contact portion
3b, 13b spring
3c, 13c junction surface
4 zoom lens
5,25 driving shafts
5a, 25a cardinal extremity
5b, 25b front end
7 vibrating mass
7a, 7b, 7c limit
7d rotation axes of symmetry
7e bight
9 frameworks
9a, 9b limit
11 imageing sensors
11a limit
14 condenser lenses
15,17 driver elements
18 photograph subject side lens
19 substrates
26,27 parts of bearingss
28 piezoelectric elements
29 tickers
31,33 position detection unit
35 pole piece
37 MR sensors
Embodiment
(the 1st example)
Below, with reference to the accompanying drawings, just the 1st example of the present invention is described.
First, the summary of the lens driver in this example 1 is described.Lens driver in this example 1 is mounted in the lens driver with on the built-in camera apparatus (not shown) of the mobile terminal apparatus (not shown) of camera.Here, mobile terminal apparatus refers to, portable phone, personal digital assistant (PDA), the moveable end device such as PC.
As shown in Figure 1, the lens driver 1 in this example 1 comprises: driving shaft 5, and it freely movably supports lens supports body 3 at optical axis direction, and lens supports body 3 supports lens (not shown); Vibrating mass 7, it is configured in an end of driving shaft 5, and at optical axis direction, driving shaft 5 is vibrated; Framework 9, its collecting lens supports body 3, driving shaft 5 and vibrating mass 7, and from optical axis direction in square; And imageing sensor 11, it is configured on rear side of the optical axis direction of lens supports body 3, and is rectangle from optical axis direction.Here, optical axis direction in FIG refers to the direction of side-inner side in front of paper.Imageing sensor 11 is configured in the central portion of framework 9 to make two foursquare adjacent limit 9a of its rectangular limit 11a and framework 9, and 9b is relative.From optical axis direction, vibrating mass 7 comprises two limit 7a, the secondary rotating symmetric figure of a 7b and limit 7c.Described two limit 7a, 7b, it is abreast near two foursquare adjacent limit 9a of framework 9,9b; A described limit 7c, it is abreast near a rectangular limit 11a of imageing sensor 11.Driving shaft 5 is arranged on the rotation axes of symmetry 7d of vibrating mass 7.
Such as, as shown by dashed lines imageing sensor 11 is such in FIG, if each limit of framework 9 and imageing sensor 11 is configured with paralleling respectively, imageing sensor 11 just and vibrating mass 7 overlap.Therefore, the larger vibrating mass of area 7 cannot be configured.Also have, even if configuration image sensor 11 is to make two foursquare adjacent limit 9a of rectangular one side 11a and framework 9,9b is relative, once configure dimetric vibrating mass 7 as shown by dashed lines, the bight 7e of vibrating mass 7 just and imageing sensor 11 coincide.Therefore, from result, still the larger vibrating mass of area 7 cannot be configured.
But, if imageing sensor 11 is configured like this at the central portion of framework 9, to make the foursquare adjacent both sides 9a of rectangular one side 11a and framework 9, the words that 9b is relative, the foursquare adjacent both sides 9a of framework 9, just forms larger space between the limit 11a of 9b and imageing sensor 11.In this space, make the limit 7a of the limit 9a of framework 9 and vibrating mass 7 close abreast, make the limit 7c of the limit 11a of imageing sensor 11 and vibrating mass 7 close abreast, just can configure the larger vibrating mass of area 7.Therefore, vibrating mass 7 just produces larger vibration.Further, by making the shape of vibrating mass 7 be 2 Rotational Symmetries, and driving shaft 5 being arranged on its rotation axes of symmetry 7d, even the area of identical vibrating mass 7, also can producing larger vibration.
Like this, the lens driver 1 in this example 1, just less from the unnecessary space of the inner side of the framework 9 when optical axis direction, the larger vibrating mass of area 7 can be configured, so the vibratory output of vibrating mass 7 is larger.Therefore, even if reduce framework 9, also can guarantee the vibratory output of vibrating mass 7, thus lens driver 1 miniaturization can be made.
Below, the formation with regard to lens driver 1 is described in detail.
As shown in Figure 2, lens driver 1 comprises: lens supports body 3, and it zoom lens 4 in framework inner support; Driver element 15, it drives lens supports body 3; Lens supports body 13, which support condenser lens 14; And driver element 17, it drives lens supports body 13.In this lens driver 1, be also provided with and the substrate 19 of imageing sensor 11 is set.Further, as shown in Figure 3, framework 9 li is provided with: position detection unit 31, and it detects the position of the lens supports body 3 supporting zoom lens 4; And position detection unit 33, it detects the position of the lens supporter 13 supporting condenser lens 14.
As shown in Figure 2, in framework 9, configure zoom lens 4 and condenser lens 14, zoom lens 4 support by lens supports body 3, condenser lens 14 the rear side of zoom lens 4 keep by lens supports body 13.Image space on rear side of condenser lens 14 is arranged imageing sensor 11.Further, the framework 9 on front side of zoom lens 4 arranges photograph subject side lens 18.Photograph subject side lens 18 are consistent with the optical axis of zoom lens 4 and condenser lens 14, and this optical axis configures the center of imageing sensor 11.Zoom lens 4 and condenser lens 14 support at optical axis direction with being freely shifted in the horizontal direction, and photograph subject side lens 18 and imageing sensor 11 are fixed.Further, imageing sensor 11 is configured in the central portion of framework 9.
As shown in Figures 3 and 4, from optical axis direction, framework 9 is in square, and the inside of global shape is the lineal hexahedral in cavity.Driver element 15,17 and position detection unit 31,33 is accommodated in the inside of framework 9.Face on front side of the optical axis direction of framework 9 is arranged the opening in order to configure photograph subject side lens 18; Being opened on rear side of the optical axis direction of framework 9, is to configure the substrate 19 being installed with imageing sensor 11 like this.
Now with regard to driver element 15,17 are described.Driver element 15 and driver element 17 have identical formation, so be only described driver element 15, and the part that driver element 17 has an identical action effect pays identical symbol, thus their description is omitted.
As shown in Figures 2 and 4, driver element 15 (17) is formed by vibrating mass 7 and at the driving shaft 5 (25) that optical axis direction configures.The cardinal extremity 5a (25a) of driving shaft 5 (25) is fixed on vibrating mass 7 by bonding etc.As shown in Figures 3 and 4, driver element 15,17 be configured in respectively from optical axis direction be the diagonal line A of foursquare framework 9.
As shown in Figure 2, the front end 5b (25b) of driving shaft 5 (25) is maintained in framework 9 by parts of bearings 27, and parts of bearings 27 slidably supports driving shaft 5 (25).In the cardinal extremity 5a side of driving shaft 5 (25), parts of bearings 26 is arranged in framework 9, and parts of bearings 26 slidably supports driving shaft 5 (25).Parts of bearings 26,27 are made by the material of the elastically deformable resemble silicon rubber.
Vibrating mass 7 is by piezoelectric element 28, and ticker 29 is formed.Ticker 29 by being bonded and fixed at the surface of piezoelectric element 28, and has elasticity.The surface of ticker 29 is fixed wtih the cardinal extremity 5a (25a) of driving shaft 5 (25) by bonding, contrary one side is then fixed wtih piezoelectric element 28.
Vibrating mass 7 is only fixed on driving shaft 5 (25), and empty gap and being configured between the wall of framework 9.As shown in Figure 4, vibrating mass 7 comprises: two limit 7a, 7b, and a limit 7c.From optical axis direction, described two limit 7a, 7b abreast near two foursquare adjacent limit 9a of framework 9,9b, a described limit 7c then abreast near a rectangular limit 11a of imageing sensor 11.Further, vibrating mass 7 is 2 Rotational Symmetry proterties.That is, two bights on foursquare diagonal line, excise the shape of onesize right-angle triangle.Driving shaft 5 (25) is arranged on the rotationally symmetric axis 7d of vibrating mass 7.
As shown in Figure 3, arrange the pressure contact portion 3a (13a) of crimping driving shaft 5 (25) in an end of lens supports body 3 (13), pressure contact portion 3a (13a) crimped by the side of spring 3b (13b) driven shaft 5 (25).
His end of lens supports body 3 (13) arranges the junction surface 3c (13c) engaging (engage) with driving shaft 25 (5), junction surface 3c (13c) and driving shaft 25 (5) engage and are supported, and guide the movement of lens supports body 3 (13).The xsect of junction surface 3c (13c), in the summary U-shaped taking the central side of lens supports body 3 (13) end of as, is inserted with driving shaft 25 (5) in U-shaped.
Below, with regard to position detection unit 31,33 are described.Position detection unit 31 detects the position of the optical axis direction of the lens supports body 3 that support zoom lens 4, and position detection unit 33 detects the position of the optical axis direction of the lens supports body 13 that support condenser lens 14.Position detection unit 31 and 33 forms identical, is described below with regard to position detection unit 31, and the part that position detection unit 33 has an identical action effect pays identical symbol, thus their description is omitted.
As shown in Figure 3, driver element 15 is being installed, the square framework 9 of 17 be not diagonal line A other diagonal line B on configure the position detection unit 31,33 of the position of the optical axis direction of detection lens supports body 3,13 respectively.
Position detection unit 31 (33) is made up of pole piece 35 and MR sensor 37.Pole piece 35 is the different magnetites of the magnetic pole (S pole and N pole) that configures alternately along the optical axis direction of lens, and it is fixed on the inside of framework 9.MR sensor 37 is the sensors detecting the magnetic field intensity caused due to pole piece 35, and it is fixed on lens supports body 3 (13).MR sensor 37 moves under the state relative with pole piece 35 together with lens supports body 3 (13), detect the magnetic field intensity caused due to pole piece 35, and then detect the position of optical axis direction of the reference position (or primary position) leaving lens supports body 3 (13).
Imageing sensor 11 detects from photograph subject and passes photograph subject side lens 18, zoom lens 4, the sensor of the light of condenser lens 14, and its part receiving light is rectangle.The light detected by imageing sensor 11 is transformed to electric signal, then outputs to camera body from substrate 19.
As shown in Figure 2, imageing sensor 11 is so configured to make it to be centrally located at rear side on the optical axis of photograph subject side lens 18 and zoom lens 4 and condenser lens 14.Further, as shown in Figure 4, imageing sensor 11 is so configured two the foursquare adjacent limit 9a making its rectangular limit 11a and framework 9, and 9b is relative.
Below, the functions and effects with regard to this example 1 are described.As shown in Figure 2, the lens driver 1 in this example 1, optical axis direction movable support zoom lens 4 lens supports body 3 thus change multiplying power, optical axis direction movable support condenser lens 14 lens supports body 13 and focus.
In order to the lens supports body 3 of zoom lens 4 at optical axis direction movable support, vibrating mass 7 is vibrated at the optical axis direction of the axis direction as driving shaft 5.This vibration is the elastic deformation of the flexible of the piezoelectric element 28 caused by supplying predetermined pulse current to the piezoelectric element 28 of vibrating mass 7 and ticker 29 and elasticity involution and produces.
By under the occasion of lens supports body 3 side movement forward, first, front side vibration deformation is given to make ticker 29 by elastic deformation by electric current to piezoelectric unit 28.So driving shaft 5 just moves on front side of optical axis direction, lens supports body 3 is because have friction force at pressure contact portion 3a and driving shaft 5, so move on front side of optical axis direction together with driving shaft 5.Next, when cut-out supplies electric current to piezoelectric element 28, or supply the electric current of reverse direction to piezoelectric element, ticker 29 just gets back to suddenly original position due to the reacting force of elastic deformation, or further to reverse direction elastic deformation.So driving shaft 5 just gets back to original position, or move on rear side of optical axis direction further.But due to inertia, lens supports body 3 is just parked in the position of the initial movement by electric current.As a result, lens supports body 3 just only moves the distance being equivalent to the deflection of ticker 29 on front side of optical axis direction.By vibrating mass 7 in optical axis direction vibration repeatedly, the lens supports body 3 supporting zoom lens 4 just advances along driving shaft 5 to optical axis direction.Therefore, the vibratory output of vibrating mass 7 is larger, and lens supports body 3 moves more effectively at optical axis direction.
By changing the sense of current of the piezoelectric element 28 of supply vibrating mass 7, pulse waveform, the dutycycle of pulse, just can change the method for the distortion of ticker 29, and then can change the forward travel state of lens supports body 3.Also can make it to retreat.The driving supporting the lens supports body 13 of condenser lens 14 can be the same with lens supports body 3.
Correctly can be detected the position of the optical axis direction of lens supports body 3 by position detection unit 31, thus correctly set multiplying power.Further, correctly can be detected the position of the optical axis direction of lens supports body 13 by position detection unit 33, thus can correctly focus.And, the relative position of the optical axis direction between lens supports body 3 and lens supports body 5 can be detected, so, can control with regard to the collision avoiding lens supports body 3 and lens supports body 5.
In time passing through identical electric current to the piezoelectric element 28 of vibrating mass 7, preferably, the vibration that the deflection of the optical axis direction of ticker 29 is larger can make the amount of movement of lens supports body 3 in 1 vibration larger.For this reason, strengthen as far as possible vibrating mass 7 from area during optical axis direction, and driving shaft 5 is configured in the centre of oscillation.Further, the shape of vibrating mass 7, if the shape of symmetry, can strengthen vibratory output.
In this example 1, as shown in Figure 4, at the central portion of framework 9, make a rectangular limit 11a of imageing sensor 11 and two foursquare adjacent limit 9a of framework 9,9b is relative.Like this, at the limit 11a of the imageing sensor 11 and limit 9a of framework 9, between 9b, just can guarantee to configure larger vibrating mass 7.And vibrating mass 7, from optical axis direction, has: two limit 7a, 7b, it is abreast near two foursquare adjacent limit 9a of framework 9,9b; And a limit 7c, it is abreast near a rectangular limit 11a of image sensor 11.Therefore, larger area can be guaranteed in above-mentioned space.Further, vibrating mass 7 with limit 7a, the position that 7b, 7c are relative is respectively arranged with parallel and that length is identical limit, makes it to become 2 rotational symmetric shapes.Further, driving shaft 5 (25) is arranged on the rotation axes of symmetry 7d of vibrating mass 7.
Therefore, the area of vibrating mass 7 is comparatively large, and is 2 non-rotational symmetric shape, and on its rotation axes of symmetry 7d, arrange driving shaft 5 (25), so even if to piezoelectric element 28 by identical electric current, the amount of movement of lens supports body 3 is also larger.Contrary, if expect the predetermined amount of movement of lens supports body 3, can by reducing the area of vibrating mass 7.The part that the area of vibrating mass 7 reduces just can be used for reducing the size from the framework 9 during optical axis direction.Therefore, it is possible to reduce framework 9, make lens driver 1 miniaturization.
Further, the periphery of vibrating mass 7 is all be made up of straight line, so manufacture vibrating mass 7 by cutting off processing.Therefore, it is possible to can manufacture at an easy rate.
In this 1st example, as shown in Figures 3 and 4, lens driver 1 comprises two groups below: the driving shaft 5 of support of lens supporter 3 and such one group of vibrating mass 7; And the driving shaft 25 of support of lens supporter 13 and such one group of vibrating mass 7.Further, these two groups are configured in respectively the contrary both sides of the imageing sensor 11 on the diagonal line A clipping foursquare framework 9.Therefore, driving shaft 25 and this group of vibrating mass 7 thereof and, driving shaft 5 and this assembly of vibrating mass 7 thereof are set to the space be of similar shape with area.Therefore, and driving shaft 25 to become the vibratory output of the vibrating mass 7 of a group just enough large.So in order to obtain the predetermined amount of movement of lens supports body 13, otherwise obtain by the area reducing vibrating mass 7, the part that vibrating mass 7 reduces just can be used to the size reducing framework 9, thus can make lens driver 1 miniaturization.
Further, in this example 1, as shown in Figure 3, other diagonal line B of framework 9 configures the position detection unit 31,33 detecting the position of each lens supports body 3,13.Position detection unit 31,33 rather spacious diagonal line B sides being configured in framework 9, even if so configure the size that position detection unit 31,33 also can reduce framework 9.Therefore, it is possible to make lens driver miniaturization.
Because lens driver 1 miniaturization can be made, so the camera apparatus miniaturization with lens driver 1 also can be made.So the mobile terminal apparatus with above-mentioned camera apparatus just can miniaturization.
(the 2nd example)
Below, be described with regard to the 2nd example of the present invention with reference to accompanying drawing.As shown in Figure 5, the shape of the vibrating mass 7 of the lens driver 1 in this example 2 is not identical with the shape in the 1st example.Formation beyond vibrating mass 7 is identical with the 1st example 1, quotes its explanation.
Vibrating mass 7 in this example 2 has: the bight that limit vertical with limit 7a for the limit 7a of the vibrating mass 7 in the 1st example is formed is excised with the angle of 45 °, forms limit 7f; And the bight that the limit that limit 7b is vertical with limit 7b is formed is excised with the angle of 45 °, form limit 7g.Limit 7c, the limit relative with limit 7c, limit 7f, and limit 7g, the length on these four limits is all identical, limit 7a, the limit relative with limit 7a, limit 7b, and the limit relative with limit 7b, and the length on these four limits is all identical.So the vibrating mass 7 in this example 2 is 4 Rotational Symmetries.
Although the area of the vibrating mass 7 in area ratio the 1st example of the vibrating mass 7 in this example 2 is little, symmetry is good, even if to piezoelectric element 28 by identical electric current, the amount of movement of lens supports body 3 is also larger.Otherwise, if expect the predetermined amount of movement of lens supports body 3, as long as the area reducing vibrating mass 7 is just passable.So that part that the area of vibrating mass 7 reduces, can be used for the size of the optical axis direction reducing framework 9 further.Therefore, it is possible to the size of the framework 9 in this example is reduced to also less than the framework 9 in the 1st example, and then just can realize the further miniaturization of lens driver 1.
The present invention is not limited to above-mentioned example, can do all distortion without departing from the scope of the gist of the present invention.
Such as, vibrating mass 7 can be 6 Rotational Symmetries or 8 Rotational Symmetries.Symmetry improves, and vibratory output just becomes large, certainly with regard to Miniaturizable.Lens supports body 3 (13) is not limited to engage (engage) with driving shaft 25 (5) respectively and supported, and also can arrange the back shaft guiding movement in addition.Further, pole piece 35 can be arranged on lens supports body 3, and on 13, MR sensor 37 can be arranged in framework 9.
Claims (6)
1. a lens driver, comprising:
Driving shaft, it supports the lens supports body of support of lens at optical axis direction with moving freely;
Vibrating mass, it is configured in an end of described driving shaft, and described driving shaft is vibrated at optical axis direction;
Framework, it is square from optical axis direction, and accommodates described lens supports body, described driving shaft and described vibrating mass; And
Image sensor, it is rectangle from optical axis direction, and on rear side of the optical axis direction being configured in described lens supports body;
It is characterized in that,
Described image sensor is configured in the central portion of described framework to make a rectangular limit relative with two foursquare adjacent limits of described framework;
Described vibrating mass is 2 non-rotational symmetric shape, and from optical axis direction, it comprises:
Two limits, it is abreast close to two foursquare described adjacent limits of described framework; And
A limit, it is abreast close to a rectangular described limit of described image sensor; Described driving shaft is arranged on the rotationally symmetric axis of described vibrating mass.
2. lens driver as claimed in claim 1, is characterized in that,
Described vibrating mass is 4 Rotational Symmetries.
3. lens driver as claimed in claim 1, is characterized in that,
Comprise further: driving shaft and described vibrating mass described in two groups that support described lens supports body, driving shaft described in a group and described vibrating mass support a described lens supports body;
Described in these two groups, driving shaft and described vibrating mass are configured in the two opposite sides of described imageing sensor respectively, and described imageing sensor is positioned on the diagonal line of foursquare described framework.
4. lens driver as claimed in claim 3, is characterized in that,
Another diagonal line of described framework arranges the position detection unit detecting the position of lens supports body described in each.
5. a camera apparatus, is characterized in that comprising:
Lens driver as described in claim 1,2,3 or 4.
6., with a mobile terminal apparatus for camera, it is characterized in that comprising:
Camera apparatus as claimed in claim 5.
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| CN201110297966.2A CN103018872B (en) | 2011-09-28 | 2011-09-28 | Lens driver, camera apparatus and the mobile terminal apparatus with camera |
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| CN201110297966.2A CN103018872B (en) | 2011-09-28 | 2011-09-28 | Lens driver, camera apparatus and the mobile terminal apparatus with camera |
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| CN110456474B (en) * | 2019-08-12 | 2024-12-31 | 睿恩光电有限责任公司 | Lens drive device and camera device for piezoelectric USM for autofocus |
| CN112835172A (en) * | 2020-12-31 | 2021-05-25 | 华兴源创(成都)科技有限公司 | Automatic focusing method and system for constant-magnification imaging |
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| JP2008122465A (en) * | 2006-11-08 | 2008-05-29 | Shicoh Eng Co Ltd | Lens drive unit and imaging apparatus |
| JP2008224915A (en) * | 2007-03-12 | 2008-09-25 | Shicoh Engineering Co Ltd | Lens drive device, camera, and mobile phone with camera |
| CN102062927A (en) * | 2009-10-29 | 2011-05-18 | 思考电机（上海）有限公司 | Linear driving device |
| CN202256834U (en) * | 2011-09-28 | 2012-05-30 | 思考电机（上海）有限公司 | Lens driving device, camera device and mobile terminal device with camera |
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|---|---|
| CN103018872A (en) | 2013-04-03 |
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