CN103018872A - Lens driving device, camera device and mobile terminal device with camera - Google Patents
Lens driving device, camera device and mobile terminal device with camera Download PDFInfo
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- CN103018872A CN103018872A CN2011102979662A CN201110297966A CN103018872A CN 103018872 A CN103018872 A CN 103018872A CN 2011102979662 A CN2011102979662 A CN 2011102979662A CN 201110297966 A CN201110297966 A CN 201110297966A CN 103018872 A CN103018872 A CN 103018872A
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Abstract
The invention provides a lens driving device which miniaturizes a basket body, a camera device and a mobile terminal device with the camera. The lens driving device comprises a driving shaft 5 for freely and movably supporting a lens supporting body 3, a vibration part 7 which is arranged at one end of the driving shaft 5 and used for enabling the driving shaft 5 to vibrate, a square basket body 9 for accommodating the lens supporting body 3, the driving shaft 5 and the vibration part 7, and a rectangular image sensor 11 arranged on the rear side of the optical axis direction of the lens supporting body 3. The image sensor 11 is arranged in the center part of the basket body 9, and one side 11a of the rectangle is opposite to two adjacent sides 9a and 9b of the square basket body 9; the vibration part 7 is twice-rotation-symmetric, and has two sides 7a and 7b which are close to the two sides 9a and 9b in parallel and a side 7c close to the side 11a in parallel. The driving shaft 5 is arranged on a rotation symmetric shaft 7d of the vibration part 7.
Description
Technical field
The invention relates to lens driver, have the camera apparatus of this lens driver, and the mobile terminal apparatus with camera with this camera apparatus.
Background technology
Lift-launch is fixed on driving shaft on the piezoelectric element and makes it and vibrate in the lens driver in the camera apparatus in the mobile terminal apparatus of camera, and the lens support that is frictionally engaged with driving shaft is moved along the lens axis direction.For example, disclose a kind of like this device in the patent documentation 1 (the open JP 2008-233231 communique of patent), that is: be shaped as dimetric basket and dimetric imageing sensor from optical axis direction the time and be configured to respectively each limit and parallel, and dimetric piezoelectric element is configured in the bight of basket.
Summary of the invention
With the lens driver in the built-in camera apparatus of the mobile terminal apparatus of camera, requiring of its miniaturization is more intense.But, as the formation in the patent documentation 1, even want to reduce lens driver by the size that reduces basket, still exist unnecessary space more, the more difficult such problem of miniaturization.
The present invention its objective is in order to have solved above-mentioned problem: the lens driver that provides the size that reduces basket to come miniaturization, camera apparatus and the mobile terminal apparatus of having camera.
The 1st invention comprises for a kind of lens driver: 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; Basket, it is square from optical axis direction, and accommodates described lens supports body, described driving shaft and described vibrating mass; And the graphical sensory device, it is rectangle from optical axis direction, and is configured in the optical axis direction rear side of described lens supports body.Described graphical sensory device is configured in the central portion of described basket so that two limits of the foursquare adjacency of a rectangular limit and described basket are relative.Described vibrating mass is 2 Rotational Symmetry shapes, and from optical axis direction, it comprises: two limits, and it is abreast near two limits of the foursquare described adjacency of described basket; And a limit, it is abreast near the rectangular described limit of described graphical sensory device.Described driving shaft is arranged on the rotationally symmetric axis of described vibrating mass.
If each limit of basket and imageing sensor is configured with paralleling respectively, compare with the aforementioned techniques scheme, adopt onesize vibration section material, imageing sensor just and vibrating mass can overlap.Therefore, can't configure the larger vibrating mass of area.Also have, even the configuration image sensor is so that two limits of the foursquare adjacency of rectangular one side and basket are relative, in case configure dimetric vibrating mass, the bight of vibrating mass just and imageing sensor coincide.Therefore, from the result, still can't configure the larger vibrating mass of area.The 1st invention is owing to adopting the aforementioned techniques scheme, and the redundant space of the basket inboard during from optical axis direction is less.Therefore, can reduce basket, make the 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 the driving shaft of its acquisition is just larger, thereby vibrating mass can be done littlely, therefore, can make further the lens driver miniaturization.
Described lens driver further comprises: support two groups of described driving shafts and the described vibrating mass of described lens supports body, one group of described driving shaft and described vibrating mass support a described lens supports body; These two groups of described driving shafts and described vibrating mass are configured in respectively the two opposite sides of described imageing sensor, and described imageing sensor is positioned on the diagonal line of foursquare described basket.
The opposite both sides of these two groups difference configuration image sensors.Therefore, two assembly are set to the space that is of similar shape with area, all have redundant space less in the basket during from optical axis direction and between the described both sides of imageing sensor.Therefore, can reduce basket, make the lens driver miniaturization.
Described lens driver further, is arranging the position detection unit of the position of detecting each described lens supports body at another diagonal line of described basket.
Configuring the position detection unit of the position of detecting each lens supports body on the diagonal line of another of basket, position detection unit is configured in the rather spacious diagonal line side that gets of basket, so even configuring the size that position detection unit also can reduce basket.Therefore, can make the lens driver miniaturization.
The 2nd invention is characterized in that comprising: lens driver as described for a kind of camera apparatus.The 2nd invention can obtain the technique effect identical with the 1st invention.
The 3rd invention is characterized in that comprising: camera apparatus as described for a kind of mobile terminal apparatus with camera.The 3rd invention can obtain the technique effect identical with the 2nd invention.
Description of drawings
Fig. 1 is the cross-sectional view of the part of the lens driver in the present invention's the 1st example, the part in the cross section when it has omitted among Fig. 2 and to have cut off along C-C.
Fig. 2 is the longitudinal section of the lens driver in the present invention's the 1st example, and it is the cross section when cutting off along A-A among Fig. 3.
Fig. 3 is the cross-sectional view of other parts in the present invention's the 1st example, and it is the cross section when cutting off along D-D among Fig. 2.
Fig. 4 is the cross-sectional view of the part of the lens driver in the present invention's the 1st example, and it is the cross section when cutting off along C-C among Fig. 2.
Fig. 5 is the cross-sectional view of the part of the lens driver in the present invention's the 2nd example, and it is equivalent to the Fig. 1 in the 1st example.
1 lens driver
3,13 lens supports bodies
3a, the 13a pressure contact portion
3b, the 13b spring
3c, the 13c junction surface
4 zoom lens
5,25 driving shafts
5a, the 25a cardinal extremity
5b, the 25b front end
7 vibrating mass
7a, 7b, 7c limit
The 7d rotation axes of symmetry
The 7e bight
9 baskets
9a, the 9b limit
11 imageing sensors
The 11a limit
14 condenser lenses
15,17 driver elements
The 18 subject side lens of taking pictures
19 substrates
26,27 parts of bearingss
28 piezoelectric elements
29 tickers
31,33 position detection unit
35 pole piece
The 37MR sensor
Embodiment
(the 1st example)
Below, with reference to the accompanying drawings, describe with regard to the 1st example of the present invention.
The summary of the lens driver in this example 1 at first, is described.Lens driver in this example 1 is the lens driver that carries on the camera apparatus (not shown) built-in with the mobile terminal apparatus (not shown) of camera.Here, mobile terminal apparatus refers to, portable phone, and personal digital assistant (PDA), PC etc. are end device movably.
As shown in Figure 1, the lens driver 1 in this example 1 comprises: driving shaft 5, and it is supporting lens supports body 3 at optical axis direction with can move freely, and lens supports body 3 is supporting lens (not shown); Vibrating mass 7, it is configured in an end of driving shaft 5, and makes driving shaft 5 vibrations at optical axis direction; Basket 9, it accommodates lens supports body 3, driving shaft 5 and vibrating mass 7, and is square from optical axis direction; And imageing sensor 11, it is configured in the optical axis direction rear side of lens supports body 3, and is rectangle from optical axis direction.Here, the optical axis direction in Fig. 1 refers to the direction of side-inboard, paper front.Imageing sensor 11 is configured in the central portion of basket 9 so that two limit 9a of the foursquare adjacency of its rectangular limit 11a and basket 9, and 9b is relative.From optical axis direction, vibrating mass 7 is to comprise two limit 7a, the secondary rotating symmetric figure of 7b and a limit 7c.Described two limit 7a, 7b, it is two limit 9a of the foursquare adjacency of close basket 9 abreast, 9b; A described limit 7c, it is a rectangular limit 11a of close imageing sensor 11 abreast.Driving shaft 5 is arranged on the rotation axes of symmetry 7d of vibrating mass 7.
For example, imageing sensor 11 shown in dotted line in Fig. 1 is such, if each limit of basket 9 and imageing sensor 11 is configured with paralleling respectively, imageing sensor 11 just and vibrating mass 7 coincidences.Therefore, can't configure the larger vibrating mass of area 7.Also have, even configuration image sensor 11 is so that two limit 9a of the foursquare adjacency of rectangular one side 11a and basket 9,9b is relative, in case configure dimetric vibrating mass 7 shown in dotted line, the bight 7e of vibrating mass 7 just and imageing sensor 11 coincide.Therefore, from the result, still can't configure the larger vibrating mass of area 7.
But, if the central portion at basket 9 configures imageing sensor 11 like this, so that the both sides 9a of the foursquare adjacency of rectangular one side 11a and basket 9, the words that 9b is relative, the both sides 9a of the foursquare adjacency of basket 9 just forms larger space between the limit 11a of 9b and imageing sensor 11.In this space, the limit 9a of basket 9 and the limit 7a of vibrating mass 7 are approached abreast, the limit 11a of imageing sensor 11 and the limit 7c of vibrating mass 7 are approached abreast, just can configure the larger vibrating mass of area 7.Therefore, vibrating mass 7 just produces larger vibration.And, by making the Rotational Symmetry that is shaped as 2 times of vibrating mass 7, and driving shaft 5 is arranged on its rotation axes of symmetry 7d, even the area of identical vibrating mass 7 also can produce larger vibration.
Like this, the lens driver 1 in this example 1, the unnecessary space of the inboard of the basket 9 in the time of from optical axis direction is just less, can configure the larger vibrating mass of area 7, so the vibratory output of vibrating mass 7 is larger.Therefore, even reduce basket 9, also can guarantee the vibratory output of vibrating mass 7, thereby can make lens driver 1 miniaturization.
Below, be elaborated with regard to the formation of lens driver 1.
As shown in Figure 2, lens driver 1 comprises: lens supports body 3, and it zoom lens 4 in the basket inner support; Driver element 15, it drives lens supports body 3; Lens supports body 13, it is supporting condenser lens 14; And driver element 17, it drives lens supports body 13.In this lens driver 1, the substrate 19 that imageing sensor 11 is being set is installed also.And as shown in Figure 3,9 li of baskets are provided with: position detection unit 31, and it detects the position of the lens supports body 3 that supports zoom lens 4; And position detection unit 33, it detects the position of the lens support 13 that supports condenser lens 14.
As shown in Figure 2, at basket 9 interior zoom lens 4 and the condenser lenses 14 of configuring, zoom lens 4 are supported by lens supports body 3, and condenser lens 14 is kept by lens supports body 13 at the rear side of zoom lens 4.Image space at condenser lens 14 rear sides is arranging imageing sensor 11.Also have, the basket 9 in zoom lens 4 front sides is arranging the subject side lens 18 of taking pictures.The subject side of taking pictures lens 18 are consistent with the optical axis of zoom lens 4 and condenser lens 14, are configuring the center of imageing sensor 11 at this optical axis.Zoom lens 4 and condenser lens 14 are supporting at optical axis direction with being moved freely, and the subject side of taking pictures lens 18 and imageing sensor 11 are being fixed.Also have, imageing sensor 11 is configured in the central portion of basket 9.
As shown in Figures 3 and 4, from optical axis direction, basket 9 is square, and the inside of global shape is the lineal hexahedral in cavity.Accommodating driver element 15,17 and position detection unit 31,33 in the inside of basket 9.Arranging on the face of the optical axis direction front side of basket 9 in order to configure the opening of the subject side lens 18 of taking pictures; The optical axis direction rear side of basket 9 is being opened, and is the substrate 19 that imageing sensor 11 is installed in order to configure like this.
Describe with regard to driver element 15,17 now.Driver element 15 has identical formation with driver element 17, so only driver element 15 is described, the part that has the same function effect with driver element 17 is paid identical symbol, thereby their description is omitted.
Such as Fig. 2 and shown in Figure 4, driver element 15 (17) consists of by vibrating mass 7 and at the driving shaft 5 (25) that optical axis direction is configuring.The cardinal extremity 5a (25a) of driving shaft 5 (25) waits by bonding and is fixed on the vibrating mass 7.As shown in Figures 3 and 4, driver element 15,17 is configured in respectively from optical axis direction and is on the diagonal line A of foursquare basket 9.
As shown in Figure 2, the front end 5b (25b) of driving shaft 5 (25) is maintained on the basket 9 by parts of bearings 27, and parts of bearings 27 is supporting driving shaft 5 (25) with being free to slide.In the cardinal extremity 5a of driving shaft 5 (25) side, parts of bearings 26 is installed on the basket 9, and parts of bearings 26 is supporting driving shaft 5 (25) with being free to slide.Parts of bearings 26,27 is made by the material of the elastically deformable resemble silicon rubber.
Vibrating mass 7 is by piezoelectric element 28, and ticker 29 consists of.Ticker 29 is 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, opposite one side then is fixed wtih piezoelectric element 28.
7 of vibrating mass are fixed on the driving shaft 5 (25), and empty gap and being configured between the wall of basket 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 are abreast near two limit 9a of the foursquare adjacency of basket 9, and 9b, a described limit 7c are then abreast near the rectangular limit 11a of imageing sensor 11.And vibrating mass 7 is 2 Rotational Symmetry proterties.That is to say two bights on foursquare diagonal line, the shape of excising 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, the pressure contact portion 3a (13a) of crimping driving shaft 5 (25) is being set in an end of lens supports body 3 (13), pressure contact portion 3a (13a) is by the side institute crimping of spring 3b (13b) driven shaft 5 (25).
His end of lens supports body 3 (13) is arranging the junction surface 3c (13c) that engages (engage) with driving shaft 25 (5), junction surface 3c (13c) and driving shaft 25 (5) engage and are supported, the movement of guiding lens supports body 3 (13).The xsect of junction surface 3c (13c) is the summary U word shape take the central side of lens supports body 3 (13) end of as, is inserted with driving shaft 25 (5) in the U word.
Below, describe with regard to position detecting unit 31,33.Position detection unit 31 detects the position of the optical axis direction of the lens supports body 3 that is supporting zoom lens 4, and position detection unit 33 detects the position of the optical axis direction of the lens supports body 13 that is supporting condenser lens 14.Position detection unit 31 and 33 consists of identical, and the below describes with regard to position detecting unit 31, and the part that has the same function effect with position detection unit 33 is paid identical symbol, thereby their description is omitted.
As shown in Figure 3, not the position detection unit 31,33 of position that is configuring respectively the optical axis direction of detection lens supports body 3,13 on other the diagonal line B of diagonal line A at the square basket 9 that driver element 15,17 is installed.
Position detection unit 31 (33) is made of pole piece 35 and MR sensor 37.Pole piece 35 is different magnetites of magnetic pole (the S utmost point and the N utmost point) that the optical axis direction along lens is configuring alternately, and it is fixed on the inside of basket 9.MR sensor 37 is the sensors that detect the magnetic field intensity that causes owing to pole piece 35, and it is fixed on the lens supports body 3 (13).MR sensor 37 under the state relative with pole piece 35 and lens supports body 3 (13) mobile together, detect the magnetic field intensity that causes owing to pole piece 35, and then detect the position of the optical axis direction of the reference position (perhaps primary position) of leaving lens supports body 3 (13).
As shown in Figure 2, imageing sensor 11 is so configured so that it is centered close to the rear side on the optical axis of take pictures subject side lens 18 and zoom lens 4 and condenser lens 14.Also have, as shown in Figure 4, imageing sensor 11 is so configured so that two limit 9a of the foursquare adjacency of its rectangular limit 11a and basket 9, and 9b is relative.
Below, describe with regard to effect and the effect of this example 1.As shown in Figure 2, the lens driver 1 in this example 1, thus change multiplying powers at the lens supports body 3 of optical axis direction movable support zoom lens 4, focus at the lens supports body 13 of optical axis direction movable support condenser lens 14.
In order the lens supports body 3 of zoom lens 4 at the optical axis direction movable support, make vibrating mass 7 in the optical axis direction vibration as the axis direction of driving shaft 5.This vibration is to produce by elastic deformation from the piezoelectric element 28 that predetermined pulse current causes to the piezoelectric element 28 of vibrating mass 7 and the elasticity involution flexible and ticker 29 of supplying with.
With lens supports body 3 forward under the occasion of side shifting, at first, to piezoelectric unit 28 by electric current so that ticker 29 gives the front side vibration deformation by elastic deformation.So driving shaft 5 is side shifting before the optical axis direction just, lens supports body 3 is because have friction force at pressure contact portion 3a and driving shaft 5, so and driving shaft 5 side shifting before the optical axis direction together.Next, supply with electric current when cutting off to piezoelectric element 28, or supply with backward electric current to piezoelectric element, ticker 29 is just got back to suddenly original position owing to the reacting force of elastic deformation, or further to contrary direction elastic deformation.So driving shaft 5 is just got back to original position, or further side shifting behind the optical axis direction.But because inertia, lens supports body 3 just is parked in initial position of moving by electric current.As a result, lens supports body 3 just only moves the distance of the deflection that is equivalent to ticker 29 in the optical axis direction front side.In optical axis direction vibration repeatedly, the lens supports body 3 that supports zoom lens 4 just advances to optical axis direction along driving shaft 5 by vibrating mass 7.Therefore, the vibratory output of vibrating mass 7 is larger, and lens supports body 3 is just more mobile at optical axis direction.
Supply with the sense of current of the piezoelectric element 28 of vibrating mass 7 by change, 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 of supporting the lens supports body 13 of condenser lens 14 can be the same with lens supports body 3.
Can correctly detect the position of the optical axis direction of lens supports body 3 by position detection unit 31, thereby correctly set multiplying power.Also have, can correctly detect the position of the optical axis direction of lens supports body 13 by position detection unit 33, thereby can correctly focus.And, can detect the relative position of the optical axis direction between lens supports body 3 and the lens supports body 5, so, can control with regard to the collision of avoiding lens supports body 3 and lens supports body 5.
When the piezoelectric element 28 to vibrating mass 7 passed through identical electric current, 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 optical axis direction the time area, and driving shaft 5 is configured in the centre of oscillation.Also have, the shape of vibrating mass 7 is if symmetrical shape can strengthen vibratory output.
In this example 1, as shown in Figure 4, at the central portion of basket 9, make two limit 9a of the foursquare adjacency of the rectangular limit 11a of imageing sensor 11 and basket 9,9b is relative.Like this, at the limit 9a of the limit of imageing sensor 11 11a and basket 9, between the 9b, just can guarantee to configure larger vibrating mass 7.And vibrating mass 7 from optical axis direction, has: two limit 7a, and 7b, it is two limit 9a of the foursquare adjacency of close basket 9 abreast, 9b; And a limit 7c, it is a rectangular limit 11a of close graphical sensory device 11 abreast.Therefore, in above-mentioned space, can guarantee larger area.And, vibrating mass 7 with limit 7a, 7b, 7c is respectively arranged with limit parallel and that length is identical on the relative position, makes it to become rotational symmetric shape 2 times.Also have, 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 larger, and is 2 Rotational Symmetry shapes, and at its rotation axes of symmetry 7d driving shaft 5 (25) is being set, so even pass through identical electric current to piezoelectric element 28, the amount of movement of lens supports body 3 is also larger.Opposite, if expect the predetermined amount of movement of lens supports body 3, can be by reducing the area of vibrating mass 7.The size of the basket 9 the when part that the area of vibrating mass 7 reduces just can be used for reducing from optical axis direction.Therefore, can reduce basket 9, make lens driver 1 miniaturization.
Also have, the periphery of vibrating mass 7 is made of straight line, so can make vibrating mass 7 by cutting off processing.Therefore, can make at an easy rate.
In this 1st example, as shown in Figures 3 and 4, lens driver 1 comprises following two groups: the driving shaft 5 of support of lens supporter 3 and vibrating mass 7 such one group; And the driving shaft 25 of support of lens supporter 13 and vibrating mass 7 such one group.And, these the two groups opposite both sides that are configured in respectively the imageing sensor 11 on the diagonal line A that clips foursquare basket 9.Therefore, driving shaft 25 and vibrating mass 7 these groups thereof and, driving shaft 5 and vibrating mass 7 these assembly thereof are set to the space that is of similar shape with area.Therefore, and driving shaft 25 become one group vibrating mass 7 vibratory output just enough greatly.So, in order to obtain the predetermined amount of movement of lens supports body 13, otherwise can obtaining by the area that reduces vibrating mass 7, the part that vibrating mass 7 reduces just can be used to reduce the size of basket 9, thereby can make lens driver 1 miniaturization.
Also have, in this example 1, as shown in Figure 3, configuring the position detection unit 31,33 of the position of detecting each lens supports body 3,13 on the diagonal line B of other of basket 9.Position detection unit 31,33 is configured in the rather spacious diagonal line B side that gets of basket 9, so even configuring the size that position detection unit 31,33 also can reduce basket 9.Therefore, can make the lens driver miniaturization.
Because can make lens driver 1 miniaturization, so also can make the camera apparatus miniaturization with lens driver 1.So the mobile terminal apparatus with above-mentioned camera apparatus just can miniaturization.
(the 2nd example)
Below, describe 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 shape in the 1st example.Formation beyond the vibrating mass 7 is identical with the 1st example 1, quotes its explanation.
Vibrating mass 7 in this example 2 has: the bight that the limit 7a of the vibrating mass 7 in the 1st example limit vertical with limit 7a consists of is excised with 45 ° angle, form limit 7f; And the bight that the 7b limit vertical with limit 7b in limit consisted of forms limit 7g with 45 ° angle excision.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, 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 pass through identical electric current to piezoelectric element 28, 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 it is just passable to reduce the area of vibrating mass 7.So that part that the area of vibrating mass 7 reduces can be used for further reducing the size of the optical axis direction of basket 9.Therefore, can be reduced to the size of the basket 9 in this example also littlely than the basket 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 in the scope that does not break away from main idea of the present invention.
For example, vibrating mass 7 can be 6 Rotational Symmetries or 8 Rotational Symmetries.Symmetry has been improved, and it is large that vibratory output just becomes, certainly with regard to Miniaturizable.Lens supports body 3 (13) is not limited to also supported with driving shaft 25 (5) joints (engage) respectively, and the mobile back shaft of guiding also can be set in addition.Also have, pole piece 35 can be arranged on the lens supports body 3,13, and MR sensor 37 can be arranged on the basket 9.
Claims (6)
1. lens driver comprises:
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;
Basket, it is square from optical axis direction, and accommodates described lens supports body, described driving shaft and described vibrating mass; And
The graphical sensory device, it is rectangle from optical axis direction, and is configured in the optical axis direction rear side of described lens supports body;
It is characterized in that,
Described graphical sensory device is configured in the central portion of described basket so that two limits of the foursquare adjacency of a rectangular limit and described basket are relative;
Described vibrating mass is 2 Rotational Symmetry shapes, and from optical axis direction, it comprises:
Two limits, it is abreast near two limits of the foursquare described adjacency of described basket; And
A limit, it is abreast near the rectangular described limit of described graphical sensory device;
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,
Further comprise: support two groups of described driving shafts and the described vibrating mass of described lens supports body, one group of described driving shaft and described vibrating mass support a described lens supports body;
These two groups of described driving shafts and described vibrating mass are configured in respectively the two opposite sides of described imageing sensor, and described imageing sensor is positioned on the diagonal line of foursquare described basket.
4. lens driver as claimed in claim 3 is characterized in that,
The position detection unit of the position of detecting each described lens supports body is being set at another diagonal line of described basket.
5. camera apparatus is characterized in that comprising:
Such as claim 1,2,3 or 4 described lens drivers.
6. mobile terminal apparatus with camera 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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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110456474A (en) * | 2019-08-12 | 2019-11-15 | 重庆睿恩光电子有限责任公司 | The lens driver and camera apparatus of auto-focusing piezoelectricity USM |
| 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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| JP2008224915A (en) * | 2007-03-12 | 2008-09-25 | Shicoh Engineering Co Ltd | Lens drive device, camera, and mobile phone with camera |
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| 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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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110456474A (en) * | 2019-08-12 | 2019-11-15 | 重庆睿恩光电子有限责任公司 | The lens driver and camera apparatus of auto-focusing piezoelectricity USM |
| 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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