CN202600243U - Lens driving device, auto-focusing camera, and portable terminal device - Google Patents
Lens driving device, auto-focusing camera, and portable terminal device Download PDFInfo
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- CN202600243U CN202600243U CN 201220188012 CN201220188012U CN202600243U CN 202600243 U CN202600243 U CN 202600243U CN 201220188012 CN201220188012 CN 201220188012 CN 201220188012 U CN201220188012 U CN 201220188012U CN 202600243 U CN202600243 U CN 202600243U
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Abstract
The utility model provides a lens driving device, an auto-focusing camera, and a portable terminal device. According to the lens driving device, when a lens support body moves towards the optical axis (Z axis) direction of the lens and/or moves towards the direction orthogonal to the optical axis, possibility that the lens support body deviates from the desired movement direction can be reduced. The lens driving device comprises the lens support body extending to a longer direction, a ring opening, a magnet, a first spring and a second spring, wherein the first spring and the second spring are arranged respectively on one side of the longer direction of the lens support body and on the opposite other side for supporting the lens support body. According to the electromagnetic force generated when the coil is energized, as for one of the first spring and the second spring or both springs in the lens driving device where the lens support body moves towards the longer direction and/or towards the direction orthogonal to the longer direction, the size of the spring coefficient in the longer direction is bigger than the size of the spring coefficient in the direction orthogonal to the longer direction.
Description
Technical field
The utility model is to be relevant to a kind of lens driver, particularly be relevant to a kind of be equipped in the mobile phone, drive the lens driver of lens in the auto-focus camera and carry the auto-focus camera and the portability end device of this lens driver.
Background technology
Lens driver as being equipped on the auto-focus camera in mobile phone etc. had various motions in the past.Constituting of the common property of lens driver in the past: the tubular lens supports body that supports the lens of auto-focus camera is disposed at the inboard of collar extension; Coil configuration is on the side face of said lens supporter; Magnetite is configured in above-mentioned collar extension inner peripheral surface, disposes by the certain intervals subtend.
Generate under the situation of magnetic field according to above-mentioned magnetite, the electric current that leads to above-mentioned coil through control produces electromagnetic force, make the said lens supporter to the optical axis direction (Z-direction) of lens and/or with optical axis (Z axle) mutually the X axle/Y direction of quadrature move.
Motion in the lens driver in the past does, the front side in the optical axis direction of lens supports body (promptly having the sensitive side of being taken the photograph body), and the rear side in the optical axis direction in the lens supports body (on the side that promptly forms images) disposes the place ahead spring and rear spring respectively.Come structure (referring to patent documentation TOHKEMY 2006-58662 communique, TOHKEMY 2006-251216 communique) that the said lens supporter is supported through this place ahead spring and rear spring.
The utility model content
In lens driver in the past; As stated; Through the structure that adopts the place ahead spring and rear spring that the lens supports body is supported; Even if so make the lens supports body to the optical axis direction (Z-direction) of lens and/or in the X axle/Y direction of quadrature moves mutually, the lens supports body is remained on desirable its certain effect of position performance with optical axis (Z axle).
But, when the lens supports body to the optical axis direction (Z-direction) of lens and/or with optical axis (Z axle) when the X axle/Y direction of quadrature moves mutually, lens supports is known from experience and is departed from out desired moving direction.In a single day the lens supports body departs from, and the lens that supported by the lens supports body can depart from thereupon, is difficult to absorb distinctness like this and takes a picture clearly, can produce suchlike problem.
Therefore; The utility model will provide lens driver, auto-focus camera and carried terminal device; Wherein the lens driver of institute's motion its objective is; Lens driver adopts the place ahead spring and rear spring to come the structure that the lens supports body is supported, and makes the lens supports body to lens axis direction (Z-direction) and/or with optical axis (Z axle) when the X axle/Y direction of quadrature moves mutually, minimizing lens supports body depart from hope the possibility of moving direction.
The lens driver of the utility model is characterized as, and has: extend to the tubular lens supports body that has coil than length direction, on side face; Be configured in the collar extension in this direction outside, lens supports body footpath; And above-mentioned coil between vacate certain intervals, be configured in the magnetite on the inner peripheral surface of above-mentioned collar extension; Have above-mentioned lens supports body than the side in the length direction and with the opposite side of this side subtend on disposing first spring and second spring that supports the said lens supporter respectively.According to electromagnetic force effect to above-mentioned coil electricity produced; Make the said lens supporter to above-mentioned than length direction and/or with above-mentioned than the length direction lens driver that the direction of quadrature moves mutually in; Either or both in above-mentioned first spring or above-mentioned second spring, the size of its above-mentioned spring constant than length direction with above-mentioned than length direction mutually the spring constant of orthogonal directions compare bigger.
In above-mentioned first spring and second spring; Above-mentioned spring constant than length direction than with above-mentioned than length direction mutually the spring that is greater of the spring constant of orthogonal directions be by above-mentioned than in the length direction, the 3rd spring constitutes with the lamination structure that the 4th spring is free to slide mutually.Either party of above-mentioned the 3rd spring or the 4th spring only supports the said lens supporter on than length direction.
In above-mentioned the 3rd spring or the 4th spring; With only in the above-mentioned spring that supports the said lens supporter on than length direction be disposed at above-mentioned than length direction in away from a side of lens supports body, simultaneously this spring is compared with above-mentioned above-mentioned spring constant than length direction by the opposing party's spring of lamination at above-mentioned spring constant than length direction that do must be big.
Between above-mentioned the 3rd spring and above-mentioned the 4th spring, get involved pad is arranged.
The auto-focus camera of the utility model possesses any one described lens driver.
The carried terminal device of the utility model is equipped with described auto-focus camera.
According to the utility model; Lens driver adopts the place ahead spring and rear spring to come this structure of support of lens supporter; Make the lens supports body move to the lens supports body than the lens axis direction (Z-direction) of length direction and/or with optical axis (Z axle) mutually when the X axle/Y direction of quadrature, reduce the lens supports body depart from hope the possibility of moving direction.
Description of drawings
[Fig. 1] is the lens driver oblique view of relevant the utility model the 1st example (a).(b) be the exploded perspective view of the lens driver of Fig. 1 (a).
[Fig. 2] is the lens driver exploded perspective view of the 2nd example of relevant the utility model.
[Fig. 3] is the wherein a part of detailed oblique view of lens driver that shows correlogram 2 diagram examples (a).(b) be the A portion expanded view of Fig. 3 (a).
[Fig. 4] is the cross section mode chart of Fig. 2, Fig. 3 part of illustrating lens driver.(a) be the cross section mode chart that the lens supports body remains static.(b) be the lens supports body move to the cross section mode chart of the orthogonal thereto X axle/Y direction of optical axis.(c) be that the lens supports body moves to the cross section mode chart as the Z-direction of optical axis direction.
[Fig. 5] makes the lens supports body when lens axis direction (Z-direction) moves forward and backward, and the key diagram that the lens supports body tilts from optical axis (Z axle) is described.(a) be the key diagram that shows the summary cross section of lens driver.(b) be the expansion key diagram of displayed map 5 (a) B portion.
[explanation of symbol]
51 lens drivers
13 frameworks
15 bases
16 frameworks
17 lens supports bodies
18 coils
The 18a main coil
The 18b secondary coil
20 magnetites
21 collar extensions
22 first springs
23 pads
25 second springs
33,53 the 3rd springs
35,55 the 4th springs
Embodiment
The utility model people is in order to achieve the above object; Lens driver adopts the place ahead spring and rear spring to come this structure of support of lens supporter; Make the lens supports body to the optical axis direction (Z-direction) of lens and/or with optical axis (Z axle) when the X axle/Y direction of quadrature moves mutually, to lens supports know from experience depart from hope that this phenomenon of moving direction researchs and analyses.
Fig. 5 (a)～(c) is the related description content after the utility model people researchs and analyses.A kind of lens driver 100 general cross section situation have been shown at Fig. 5 (a).Lens driver 100 is equipped with: the tubular lens supports body 101 of on side face, being furnished with coil 102,103; On the footpath of the lens supports body 101 direction outside, is furnished with collar extension 108.On the inner peripheral surface of collar extension 108, coil 102, have certain intervals between 103 in vain, be configured in the magnetite 107 on coil 102,103 opposites.Through producing electromagnetic force, lens supports body 101 is moved to coil 102,103 energisings.
Lens (not having diagram) are provided on the lens supports body 101, along being furnished with coil on tubular lens supports body 101 side faces than length direction (above-below direction among Fig. 5 (a)) extension of its optical axis direction.In example shown in Fig. 5 (a), main coil 102 is wound on the outer peripheral face of lens supports body 101, is configured in the direction outside, footpath of main coil 102 than main coil 102 littler secondary coils 103.Main coil 102 is fixed on the lens supports body 101 firmly.After getting involved main coil 102, secondary coil 103 firmly is fixed on the lens supports body 101.
As scheme shown in the (a) and (b), the cross section of collar extension 108 is " コ " word shape.In addition, Fig. 5 (a) is from looking its plane sideways, and is identical with collar extension 21 in the example like Fig. 1, Fig. 3 (a), all is rectangle, on its four corner inner peripheral surfaces, is furnished with magnetite 107 respectively.
In addition; On the Zhou Fangxiang of lens supports body 101,4 place's secondary coils 103 are pressed the certain intervals configuration, behind selected wherein place's secondary coil 103; Only to 103 energisings of selected secondary coil; Or through to selected secondary coil 103 electric energy control, to lens supports body 101, towards X-direction (direction shown in the arrow 112) or with X-direction mutually the thrust of the Y direction of quadrature will work.
In view of the above, make lens supports body 101 to the optical axis direction (Z-direction) of lens (do not have diagram) and/or with optical axis (Z axle) mutually the X axle/Y direction of quadrature move, realize automatic focus function and rock calibration function.
Therefore; In the magnetic figure 5 (b) that magnetite 107 sends; As the magnetic line of force that sends only homogeneity ground from the right side to the left words; When secondary coil 103 energising, part shown in the symbol 103a of secondary coil 103 and part shown in the symbol 103b the thrust size that produces then identical, direction is relative and cancel each other out.
But " コ " shaped sections structure of collar extension 108 is like Fig. 5 (b) occasion, and the dotted line that the magnetic line of force that sends from magnetite 107 will become shown in Fig. 5 (b) is such.For this reason, will produce the magnetic line of force on the direction shown in Fig. 5 (b) arrow 115, the magnetic field size that respectively part shown in the symbol 103a of secondary coil 103 and part shown in the symbol 103b is impacted might be different.In case so, such shown in Fig. 5 (c) symbol 120 and 121, divide shown in the symbol 103a of secondary coil 103 and produce different thrusts on partly shown in the symbol 103b, both possibly become the direction that kind shown in arrow 123 with joint efforts.
This result, when making lens supports body 101 the X axle/Y direction of quadrature moving mutually to the optical axis direction (Z-direction) of lens and/or with optical axis (Z axle), lens supports body 101 will produce depart from hope the phenomenon of moving direction.
In lens driver in the past; Even if when making lens supports body 101 the X axle/Y direction of quadrature moving mutually to the optical axis direction (Z-direction) of lens and/or with optical axis (Z axle); Remain on the purpose on institute's desired location from lens supports body 101; Though in Fig. 5, do not show; But lens supports body 101 than the side in the length direction (such as the upside of Fig. 5 (a)) and with this side relatively to opposite side (like the downside of Fig. 5 (b)) on, first spring and second spring of support of lens supporter 101 gone up in configuration respectively.
In addition; The spring force (size of spring constant) of the spring force of first spring of occasion (size of spring constant) and second spring is made identical thus; Then lens supports body 101 will be stablized and remains on institute's desired location, just can try hard to overcome the generation of above-mentioned off-set phenomenon.
But; As stated; Owing to reasons such as lens driver structures; Part shown in the symbol 103a of secondary coil 103 and the symbol 103b as be under the situation of different magnetic field intensity each other, identical as only the spring force of first spring and the spring force of second spring being made, can conclude to want to control lens supports body 101 not produce off-set phenomenon be the comparison difficulty.
The utility model is to accomplish on based on the basis that foregoing is researched and analysed the utility model people.
In above-mentioned first spring or second spring of the utility model, do its any side or both sides' above-mentioned spring constant bigger than above-mentioned spring constant than length direction phase orthogonal directions than length direction.Thus, the above-mentioned off-set phenomenon that lens supports body 101 is produced can effectively be controlled.
In above-mentioned first spring or second spring, do its any side or both sides' above-mentioned spring constant than the above-mentioned big occasion of spring constant, for example, can take following structure than length direction phase orthogonal directions than length direction.In above-mentioned first spring and second spring; With above-mentioned spring constant than length direction with above-mentioned than length direction mutually that big spring of spring constant of orthogonal directions make: above-mentioned than length direction in, the lamination structure that is free to slide mutually with the 3rd spring and the 4th spring.Any side of above-mentioned the 3rd spring or the 4th spring is configured to: only support the said lens supporter above-mentioned on than length direction.
According to this structure; Because the 3rd spring and the ambilateral effect of the 4th spring of institute's lamination; In than length direction (Z-direction), support said lens supporter 101; On the other hand, with than length direction (Z-direction) mutually in the X axle/Y direction of quadrature, only inoperative in the power of the spring of going up support of lens supporter 101 than length direction (Z-direction).
In view of the above, the 3rd spring and the 4th spring comfortable ground storey that slides is long-pending, and its spring tectosome is: above-mentioned spring constant size than length direction with above-mentioned than length direction mutually the spring constant of orthogonal directions compare and want big.Spring constant than length direction (Z-direction) is the worthwhile value of the 3rd spring constant and the 4th spring constant.On the other hand; With than length direction (Z-direction) mutually the spring constant of the X axle/Y direction of quadrature be: in above-mentioned the 3rd spring or the 4th spring; Only beyond the spring than length direction support of lens supporter 101, only the spring constant value by the opposing party's spring constitutes.
And; In above-mentioned the 3rd spring or the 4th spring; With only the above-mentioned spring that supports the said lens supporter than length direction be disposed at above-mentioned than length direction in away from a side of said lens supporter, can accomplish simultaneously doing this spring bigger than the spring constant of length direction than the spring constant than length direction of the opposing party's spring of above-mentioned lamination.
According to this structure,, respond well on deviation preventing to lens supports body 101 through only coming the departing from of the opposing party's spring of lamination resisted at spring than length direction support of lens supporter 101.
In addition, can make this structure of between above-mentioned the 3rd spring and above-mentioned the 4th spring, getting involved pad.After getting involved pad, the friction resistance between the 3rd spring and the 4th spring is reduced between the two.Therefore, as replacing the method that gets involved pad, we also can manage the 3rd spring and the 4th spring slipping plane each other are processed into the little face of friction resistance.
Below, with reference to annex map embodiment that the utility model is hoped is described.
Lens driver in the illustrated the utility model of Fig. 1 (a) and (b) is to possess: extend to long limit (Z-direction), on side face, have the tubular lens supports body 17 of coil 18; Be configured in the collar extension 21 in the direction outside, lens supports body 17 footpath; And coil 18 between vacate certain intervals, be configured in the magnetite 20 on the inner peripheral surface of above-mentioned collar extension 21.In addition, have lens supports body 17 than the side in the length direction (Z-direction) and with the opposite side of this side subtend on disposing first spring 22 and second spring 25 of support of lens supporter 17 respectively.According to the electromagnetic force effect that is produced to coil 18 (main coil 18a, secondary coil 18b) energising, make lens supports body 17 to than length direction (Z-direction) and/or person and Z axle mutually the X axle/Y direction of quadrature move.
This lens driver is disposed in the framework 16 that is constituted according to framework 13 and base 15.Framework 16 lens supports body 17 than length direction (Z-direction) in, be positioned at object side framework 13 and with base 15 tablings of framework 13 relative positions, so it be one therein the centre be formed with the casing of the summary Nogata shape of cylindric peristome.
All sides in lens (not having diagram) the footpath direction that remains on lens supports body 17 that is fixed.The lens (not having diagram) that kept by lens supports body 17 are the central opening portions towards above-mentioned framework 16.
The magnetite 20 that is configured on the inner peripheral surface of collar extension 21 lays respectively on the circle position that 18a fix, that secondary coil 18b is relative of serving as theme, and on collar extension 21 all directions of ring-type, disposes separately with 90 degree.See that from the plane rectangular ring-type collar extension 21 is disposing magnetite 20 respectively in week in its four corners.And four corners of configuration magnetite 20 are respectively shown in Fig. 5 (a) and (b), and its cross section is " コ " word shape.
It is by perimembranous 22b in the peripheral part 22a of slightly rectangular shape, the ring-type and for connecting peripheral part 22a and interior perimembranous 22b at 4 connecting portions (elastic material) a kind of leaf spring that 22c constituted of Zhou Fangxiang with 90 degree arranged spaced for first spring 22.In illustrated example, the 1st sidepiece 22d and the 2nd sidepiece 22e that whole equalization are divided into 2 constitute.The peripheral part 22a of first spring 22 is held between collar extension 21 and the framework 13.In addition, interior perimembranous 22b is fixed on the front side of lens supports body 17.
Under situation by magnetite 20 generation magnetic fields; To main coil 18a energising, on the lens supports body 17 of fixing main coil 18a, according to electromagnetic force; Lens supports body 17 will act on than the thrust of the optical axis direction (Z-direction) of length direction, make lens supports body 17 forwards, backwards direction move.
In the present embodiment, do the spring force (size of spring constant) of the Z-direction of first spring 22 bigger than the spring force (size of spring constant) of X axle/Y direction.In view of the above, make lens supports body 17 when the X axle/Y direction of quadrature moves mutually with the optical axis direction (Z-direction) of lens (do not have diagram) and/or person and optical axis (Z axle), just can control lens supports body 17 and can not depart from and hold from hope moving direction.
For making the spring force of Z-direction bigger, for example, can adopt and do to such an extent that relatively want big method than the wide cut of connecting portion (elastic material) 22c the thickness of first spring 22 than the spring force of X axle/Y direction.In addition, also can on the X axle/Y direction of the Z-direction of thicker direction and inner face direction, adopt the method for its spring material being made anisotropy.
In addition, among this embodiment, the spring force of the Z-direction of second spring 25 (size of spring constant) is made identical with the axial spring force of X/Y (size of spring constant).Replace, also can do the spring force of the Z-direction of second spring 25 bigger, on the other hand, also can do the spring force of the Z-direction of first spring 22 to such an extent that do identically with X axle/Y direction spring force than the spring force of X axle/Y direction.In addition, also can do the spring force of any one Z-direction in first spring 22, second spring 25 bigger than the spring force of X axle/Y direction.
Whether to first spring 22, second spring 25 any one be made above-mentioned structure; This will be on the basis of the material of the shape of the structure of the lens actuating device of considering this embodiment, shape, size, magnetite 20, size, lens driver; Flow to the electric current of main coil 18a, secondary coil 18b in change after; Lens supports body 17 is to the optical axis direction (Z-direction) of lens and/or person when the X axle/Y direction of quadrature moves mutually with the Z axle, and whether lens supports body 17 can just can be confirmed after phenomenon such as hope that moving direction departs from is resolved.On the basis that can effectively suppress the 17 generation inclinations of lens supports body, derive the structure of hoping most.
According to the auto-focus camera (not having diagram) of the lens driver that adopts this embodiment, and further carry the mobile phone (not having diagram) of this auto-focus camera; On the basis of above-mentioned resolution data; According to being departed from, correction carries out the most suitably concerning first spring 22 of setting and the configuration of second spring 25; Just can be to because the lens supports body that the constructive mechanism of lens driver etc. cause depart from suppresses, hand is trembled calibration function and just can be given full play to.
With reference to figure 2, Fig. 3 other embodiment is described.And, to the 1st embodiment in the structure portion material same names explained or the part of structure, then omit its explanation with prosign.In addition, the same section of explaining among the embodiment 1 is carried out appropriateness omit, and main explanation and embodiment 1 different portions.
In the lens driver of the utility model shown in Figure 2, replace first spring 22 in embodiment 1 lens driver, adopt the slide comfortablely structure of on than length direction lamination of a kind of the 3rd spring 33 and the 4th spring 35.And; The 4th spring 35 is to support lens supports body 17 on the X axle/Y direction of quadrature mutually at the optical axis direction (Z-direction) of lens (do not have diagram) and with the Z axle; The 3rd spring 33 formed being configured to are only at optical axis direction (Z-direction) support of lens supporter 17.Then identical about other content with the lens driver of explanation among the embodiment 1.
The 3rd spring 33 is by the interior perimembranous 33b of the peripheral part 33a of slightly rectangular shape, ring-type, reaches to connecting peripheral part 33a and interior perimembranous 33b 4 connecting portions (elastic material) leaf spring that 33c was constituted with 90 degree arranged spaced on Zhou Fangxiang.In illustrated example, it is that a sidepiece 33d and the other side 33e about being divided into by integral body constitutes.
The 4th spring 35 is by the interior perimembranous 35b of the peripheral part 35a of slightly rectangular shape, ring-type, reaches to connecting 4 connecting portions (elastic material) leaf spring that 35c constituted of peripheral part 35a and interior perimembranous 35b.In illustrated example, it is the constituting of a sidepiece 35d and the other side 35e about being divided into by integral body.
The peripheral part 35a of the peripheral part 33a of the 3rd spring 33 and the 4th spring 35 is fixed on framework 13 and the pad 15 with pad 37,38 clampings therebetween.On the other hand, the interior perimembranous 33b of the 3rd spring 33 is not fixed in Anywhere.In addition, the interior perimembranous 35b of the 4th spring 35 is fixed on the lens supports body 17.In view of the above, the 4th spring 35 with lens supports body 17 through Z-direction and with the Z axle mutually the X axle/Y direction of quadrature support.
After this, the 3rd spring 33 and the 4th spring 35 both sides according to institute's lamination support lens supports body 17 on Z-direction.On the other hand, with Z-direction mutually the X axle/Y direction of quadrature only be able to support through the 4th spring 35.
In view of the above, the spring constant of Z-direction is as the aggregate value of the spring constant of the spring constant of the 3rd spring 33 and the 4th spring 35, with the spring constant of X axle/Y direction only as the spring constant value of the 4th spring 35.Carry out lamination according to sliding between the 3rd spring 33 and the 4th spring 35 comfortablely, brought up the spring constant of Z-direction and wanted big spring tectosome than the spring constant of X axle/Y direction.
And; In this embodiment; With only being disposed on the Z-direction away from a side of lens supports body 17 at the 3rd spring 33 of support of lens supporter 17 on the Z-direction, the spring constant size of the Z-direction of the 3rd spring 33 will be greater than the spring constant size of the Z-direction of the 4th spring 35.Suppress the inclination of the 4th spring 35 according to the 3rd stronger spring 33 of spring force, can prevent more effectively that lens supports body 17 from tilting.
And, in this embodiment 2, first spring 22 in the lens driver of embodiment 1 is made the structure of 2 pieces of spring laminations.But; Can be according to the result of slant correction parsing; Can be only second spring 25 in the lens driver of embodiment 1 be made above-mentioned lamination structure, or with first spring 22 of the lens driver of embodiment 1 and the hierarchy structure that second spring, 25 both sides make above-mentioned 2 pieces of springs.
Next, to adopting above-mentioned Fig. 2 illustrated example more to elaborate with Fig. 3.And, the configuration formation of lens driver in Fig. 3 (a) and (b) should be made simple and clearization, omit laggard line description to installing a part.
The 3rd spring 53 is by the interior perimembranous 53b of peripheral part 53a, ring-type, reaches to connecting peripheral part 53a and interior perimembranous 53b 4 connecting portions (elastic material) leaf spring that 53c constituted in Zhou Fangxiang 90 degree arranged spaced.The 3rd spring 53 is equivalent to the 3rd spring of talking about 33 among Fig. 2 embodiment.
The 4th spring 55 is by the interior perimembranous 55b of peripheral part 55a, ring-type, reaches 4 connecting portions (elastic material) leaf spring that 55c constituted that connects peripheral part 55a and interior perimembranous 55b.The 4th spring 35 that the 4th spring 55 is equivalent to talk about among Fig. 2 embodiment.
Lens supports body 17 shown in Fig. 4 (a)～(c), the 17b of the section of having portion on the end of front side (among the figure, upside).The 17b of section portion forms the reducing diameter part 17a that the footpath diminishes on the anterior end of lens supports body 17 in view of the above.Shown in Fig. 3 (b), the height of the 3rd spring 53 on the long direction to want high than the height of the reducing diameter part 17a on the length direction.
Interior all side end faces of the interior perimembranous 55b of the 4th spring 55 butt up against on the periphery of reducing diameter part 17a of lens supports body 17 with interior all side end faces of pad 58, support of lens supporter 17.In addition, the rear end face of interior all sides of the interior perimembranous 55b of the 4th spring 55 butts up against the front of the 17b of section portion that the reducing diameter part 17a of lens supports body 17 forms.On the other hand, shown in Fig. 3 (b), interior all side end faces of the interior perimembranous 53b of the 3rd spring 53 with interior all side end faces of pad 59 together away from the reducing diameter part 17a of lens supports body 17.
Below, describe with reference to figure 4 about the start of lens driver 51.Under common state; Shown in Fig. 4 (a); Lens supports body 17 be through with embodiment 1 in suitable second spring 25 of first spring 22 by among the 3rd spring 53 of lamination and the 4th spring 55 and the embodiment 1 that in Fig. 3, Fig. 4, do not show support, and be held on institute's desired location.
Therefore; For example after secondary coil 18b energising; Lens supports body 17 moves when X axle/Y direction (direction shown in the arrow 61), the interior perimembranous 55b of the 4th spring 55 and pad 58 will along with lens supports body 17 together, on the X/Y direction of principal axis, slide to the back of pad 59 (Fig. 4 (b)).Therefore, be directed to the moving of X axle/Y direction of lens supports body 17, the 3rd spring 53 is not brought into play restraint.To this, because interior all sides of the 4th spring 55 butt up against on the periphery of reducing diameter part 17a of lens supports body 17, so realized inhibiting effect (Fig. 4 (b)) that lens supports body 17 is moved in X axle/Y direction.
On the other hand; After main coil 18a energising; Wanting lens supports body 17 moves to Z-direction (direction shown in the arrow 63); Then behind the interior perimembranous 55b that gets involved the 4th spring 55, pad 58,59, the 3rd spring 53 will produce and suppress the effect (Fig. 4 (c)) that lens supports body 17 moves to Z-direction.In addition, simultaneously in the front of the 17b of section portion of the reducing diameter part 17a that forms lens supports body 17, the effect (Fig. 4 (c)) that the 4th spring 55 that docks with the rear end face of interior all sides of interior perimembranous 55b also has inhibition lens supports body 17 to move to Z-direction.
About to Z-direction than high thrust, the 3rd spring 53 and the 4th spring 55 are can association moving, in addition, produce effect with second spring 25 of embodiment 1 restraint together.About little thrust, only bring into play the effect of restraint through the 4th spring 55 to X axle/Y direction.
Consider the function of this 3rd spring 53, the 4th spring 55, the spring force (size of spring constant) that the spring force (spring constant size) of the 3rd spring 53 is set for than the 4th spring 55 is big.
Because higher than the height of the 3rd spring 53 than the height of the reducing diameter part 17a in the length direction, so that lens supports body 17 is wanted to carry out to X axle/Y direction is big when mobile, reducing diameter part 17a also must dock with the interior perimembranous 53b of the 3rd spring 53.Therefore, interior perimembranous 53b also can as lens supports body 17 a little less than spacingly come start.In addition; Here so-called " weak " is not to be to say after butt joint; Lens supports body 17 just has been parked in this position, but the making a concerted effort to the mobile meaning that suppress of the spring force of the spring force of the 3rd spring 53 and the 4th spring 55 from lens supports body 17 to X axle/Y direction.
In addition; In illustrated example; The 17b of section portion is arranged on the anterior end of lens supports body 17; Make interior all sides of the interior perimembranous 55b of the 4th spring 55 be docked at the periphery of the reducing diameter part 17a that the 17b of section portion thus forms, make interior all rear flank end face of the interior perimembranous 55b of this 4th spring 55 be docked at the front of the above-mentioned section 17b of portion, also can make the structure that the 17b of this type of section portion, reducing diameter part 17a are not set.The interior perimembranous 55b that for example, also can make the 4th spring 55 then is fixed on the structure of the anterior end of lens supports body 17.
More than, with reference to the annex drawing the desirable example of the utility model, embodiment are illustrated.But the utility model is not limited to above-mentioned example and embodiment, can do the change of all forms in the technical scope that from the record of Patent right requirement scope, can hold.
For example, among above-mentioned example, the embodiment, the lens driver that drives the lens supports body to Z-direction and X axle/Y direction is illustrated, and also can only on Z-direction, drive lens driver.If only be the occasion that on Z-direction, lens driver is driven, be to improve resistance to impact, preferably the spring constant of X axle/Y axle is done smaller for well.So the spring constant of Z-direction since the inclination that will prevent the lens supports body preferably more greatly.
Claims (6)
1. lens driver has extension to the tubular lens supports body that has coil than length direction, on side face; Be configured in the collar extension in this direction outside, lens supports body footpath; And said coil between vacate certain intervals, be configured in the magnetite on the inner peripheral surface of said collar extension; Have said lens supports body than the side in the length direction and with the opposite side of this side subtend on disposing first spring and second spring that supports said lens supports body respectively; According to the electromagnetic force effect that said coil electricity produced, make said lens supports body to said than length direction and/or with said than length direction mutually the direction of quadrature move, it is characterized in that,
Either or both in said first spring or said second spring, the size of its said spring constant than length direction with said than length direction mutually the spring constant of orthogonal directions compare bigger.
2. lens driver according to claim 1; It is characterized in that; In said first spring and second spring; Said spring constant than length direction than with said than length direction mutually the spring that is greater of the spring constant of orthogonal directions be by said than in the length direction, the 3rd spring constitutes with the lamination structure that the 4th spring is free to slide mutually, either party of said the 3rd spring or the 4th spring only supports said lens supports body on than length direction.
3. lens driver according to claim 2; It is characterized in that; In said the 3rd spring or the 4th spring; With only in the said spring that supports said lens supports body on than length direction be disposed at said than length direction in away from a side of lens supports body, simultaneously this spring is compared with said said spring constant than length direction by the opposing party's spring of lamination at said spring constant than length direction that do must be big.
4. lens driver according to claim 2 is characterized in that, between said the 3rd spring and said the 4th spring, getting involved has pad.
5. auto-focus camera is characterized in that, possesses any one lens driver of being put down in writing of claim 1 to claim 4.
6. the carried terminal device is characterized in that, is equipped with the described auto-focus camera of claim 5.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011114152A JP2012234136A (en) | 2011-04-28 | 2011-04-28 | Lens drive device, autofocus camera, and portable terminal device |
| JP2011-114152 | 2011-04-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202600243U true CN202600243U (en) | 2012-12-12 |
Family
ID=47054291
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220188012 Withdrawn - After Issue CN202600243U (en) | 2011-04-28 | 2012-04-27 | Lens driving device, auto-focusing camera, and portable terminal device |
| CN201210129605.1A Active CN102759787B (en) | 2011-04-28 | 2012-04-27 | A lens drive device, an automatic focusing camera and a carrying terminal device |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210129605.1A Active CN102759787B (en) | 2011-04-28 | 2012-04-27 | A lens drive device, an automatic focusing camera and a carrying terminal device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2012234136A (en) |
| CN (2) | CN202600243U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102759787A (en) * | 2011-04-28 | 2012-10-31 | 思考电机（上海）有限公司 | A lens drive device, an automatic focusing camera and a carrying terminal device |
| CN103091813A (en) * | 2013-01-23 | 2013-05-08 | 苏州久易光电科技有限公司 | Lens driving device |
| CN112198620A (en) * | 2015-04-03 | 2021-01-08 | Lg伊诺特有限公司 | Lens driving device and camera module |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103023267B (en) * | 2012-11-30 | 2015-06-10 | 深圳市光控数码光电有限公司 | Elastic assembly for miniature driving motor |
| CN102983705B (en) * | 2012-11-30 | 2015-02-11 | 深圳市光控数码光电有限公司 | Spring for micro driving motor |
| KR101552969B1 (en) * | 2014-11-21 | 2015-09-15 | 에이에이씨 어쿠스틱 테크놀로지스 (심천) 컴퍼니 리미티드 | Camera lens module with structure for optical image stabilization |
| KR101825731B1 (en) * | 2014-12-04 | 2018-03-23 | 에이에이씨 어쿠스틱 테크놀로지스(심천)컴퍼니 리미티드 | Camera lens module with structure for optical image stabilization |
| KR101717207B1 (en) * | 2015-01-19 | 2017-03-28 | 에이에이씨 어쿠스틱 테크놀로지스(심천)컴퍼니 리미티드 | Combined plate spring and camera lens module capable of optical image stabilization with the same |
| CN111130304A (en) * | 2020-01-21 | 2020-05-08 | 新思考电机有限公司 | Voice coil motor with five-axis OIS structure, photographic device and electronic equipment |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7675566B2 (en) * | 2005-05-24 | 2010-03-09 | Panasonic Corporation | Camera module |
| JP4952149B2 (en) * | 2006-08-31 | 2012-06-13 | ミツミ電機株式会社 | The camera module |
| US20110002055A1 (en) * | 2009-07-02 | 2011-01-06 | Chan Yi-Liang | Lens structure for miniature lens driving mechanism and manufacturing method thereof |
| JP2011112918A (en) * | 2009-11-27 | 2011-06-09 | Shicoh Engineering Co Ltd | Lens drive device, autofocus camera, and cellular phone having built-in camera |
| JP2012234136A (en) * | 2011-04-28 | 2012-11-29 | Shicoh Engineering Co Ltd | Lens drive device, autofocus camera, and portable terminal device |
-
2011
- 2011-04-28 JP JP2011114152A patent/JP2012234136A/en not_active Withdrawn
-
2012
- 2012-04-27 CN CN 201220188012 patent/CN202600243U/en not_active Withdrawn - After Issue
- 2012-04-27 CN CN201210129605.1A patent/CN102759787B/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102759787A (en) * | 2011-04-28 | 2012-10-31 | 思考电机（上海）有限公司 | A lens drive device, an automatic focusing camera and a carrying terminal device |
| CN102759787B (en) * | 2011-04-28 | 2015-04-22 | 思考电机（上海）有限公司 | A lens drive device, an automatic focusing camera and a carrying terminal device |
| CN103091813A (en) * | 2013-01-23 | 2013-05-08 | 苏州久易光电科技有限公司 | Lens driving device |
| CN112198620A (en) * | 2015-04-03 | 2021-01-08 | Lg伊诺特有限公司 | Lens driving device and camera module |
| US11307378B2 (en) | 2015-04-03 | 2022-04-19 | Lg Innotek Co., Ltd. | Lens driving device, camera module and optical apparatus |
| CN112198620B (en) * | 2015-04-03 | 2023-04-14 | Lg伊诺特有限公司 | Lens driving device and camera module |
| US11675158B2 (en) | 2015-04-03 | 2023-06-13 | Lg Innotek Co., Ltd. | Lens driving device, camera module and optical apparatus |
| US11940665B2 (en) | 2015-04-03 | 2024-03-26 | Lg Innotek Co., Ltd. | Lens driving device, camera module and optical apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102759787B (en) | 2015-04-22 |
| CN102759787A (en) | 2012-10-31 |
| JP2012234136A (en) | 2012-11-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121212 Effective date of abandoning: 20150422 |