CN205427287U - Small -size formation of image module and camera lens mobile device - Google Patents

Small -size formation of image module and camera lens mobile device Download PDF

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Publication number
CN205427287U
CN205427287U CN201520881283.5U CN201520881283U CN205427287U CN 205427287 U CN205427287 U CN 205427287U CN 201520881283 U CN201520881283 U CN 201520881283U CN 205427287 U CN205427287 U CN 205427287U
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coil
lens bracket
magnet
lens
group
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郑国星
范建明
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Hong Kong Applied Science and Technology Research Institute ASTRI
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Hong Kong Applied Science and Technology Research Institute ASTRI
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Abstract

The utility model discloses a small -size formation of image module and camera lens mobile device, the module that should form images includes: a lens bracket, an electromagnetism actuator, it is connected to the lens bracket, the electromagnetism actuator includes: first coil, its optical axis that can make the lens bracket be on a parallel with the lens bracket moves, two at least coil assemblies, it can make the lens bracket rotate about the axle of a perpendicular to optical axis, wherein partly being made by the arrangement of first coil is passed the hollow portion of two at least coil assemblies, and multiple magnets, it is settled to be close to first coil with two at least coil assemblies, wherein every magnet includes first portion and second portion, the second portion is close to the first portion, the first portion orientation the different polarity of lens bracket in the second portion orientation the polarity of lens bracket. The utility model discloses be favorable to realizing more small -size, more portable camera module, reduce manufacturing cost.

Description

Small-sized image-forming module and lens moving apparatus
[technical field]
This utility model relates to small-sized image-forming module and lens moving apparatus.
[background technology]
Many portable electron devices, include but not limited to portable equipment such as mobile phone, panel computer and/or personal digital assistant (PDA), all contain a small-sized camera module.This module can include that an image inductor, an imaging lens assembly and/or actuator, to be adjusted to as lens assembly is about the position of image inductor, and/or provide image stability function (stabilization).When designer releases thinner, smaller and/or lighter portable electron device, small-sized camera module manufacturer is just in the face of such challenge: need to provide smaller camera module, by reducing the manufacturing tolerance of camera module optical system, reduce manufacturing cost.
[summary of the invention]
For solving above-mentioned technical problem, this utility model provides a kind of small-sized image-forming module and a kind of lens moving apparatus.
A kind of small-sized image-forming module, including:
One lens bracket；With
One electromagnetic actuators, it is connected to described lens bracket, and described electromagnetic actuators includes:
First coil, its optical axis that lens bracket can be made to be parallel to lens bracket moves；
At least two coil groups, it can make lens bracket rotate about an axle being perpendicular to optical axis, and a part for wherein said first coil is placed so that the hollow space through described at least two coil groups；With
Multiple magnets, it is placed near described first coil and described at least two coil groups, the most each magnet includes Part I and Part II, described Part II is different from the described Part II polarity towards described lens bracket near described Part I, described Part I towards the polarity of described lens bracket；
Wherein said first coil is near the Part I of the plurality of magnet, described at least two coil groups is placed, make the Part I Part I near the plurality of magnet of described at least two coil groups, and the Part II of described at least two coil groups is near the Part II of the plurality of magnet, so that described at least two coil groups can make lens bracket produce rotary motion with the magnetic field interaction of the first and second parts of the plurality of magnet.
A kind of lens moving apparatus, including:
One lens bracket；
One electromagnetic actuators, including:
First group of magnet and second group of magnet；
First coil, it is placed near stating lens bracket, and the one or more magnets in neighbouring described first group of magnet；
First coil group, it is placed the one or more magnets in the reciprocal side near described lens bracket, and close neighbouring described first group of magnet and the one or more magnets in described second group of magnet；
Second coil groups, it is placed the one or more magnets in the reciprocal side near described lens bracket, and close neighbouring described first group of magnet and the one or more magnets in described second group of magnet；
Wherein said first coil and described first and second coil groups are placed so that the plane being perpendicular to described lens bracket optical axis intersects with described first coil and described first and second coils；
Described electromagnetic actuators can make described lens bracket be parallel to optical axis and move, or makes described lens bracket produce rotary motion about one or more axles being perpendicular to optical axis.
By using technique scheme, this utility model is advantageously implemented smaller, lighter camera module, reduces manufacturing cost.
[accompanying drawing explanation]
With reference to the following drawings, will describe the embodiment of non-limiting and Non-exhaustive, the most identical reference code represents same parts, unless stated otherwise.
Fig. 1 is the block diagram of an embodiment device.
Fig. 2 is the block diagram of the image-forming module of an embodiment.
Fig. 3 is the perspective view of the image-forming module of an embodiment.
Fig. 4 is the perspective view of the lens bracket of an embodiment.
Fig. 5 A-5C shows the different piece of an image-forming module.Fig. 5 A shows the arrangement mode of multiple magnets of an embodiment.Fig. 5 B shows the arrangement mode of multiple magnets of another embodiment.Fig. 5 C is the perspective view of the image-forming module of an embodiment.
Fig. 6 A-6B is the sectional view of the image-forming module of different embodiment.
Fig. 7 A-7E shows the different piece of the image-forming module of an embodiment.Fig. 7 A is the perspective view of lens bracket.Fig. 7 B is the side view of lens bracket.Fig. 7 C is the perspective view of multiple magnet.Fig. 7 D and Fig. 7 E shows the lens bracket of an embodiment and multiple magnet.
Fig. 8 A-8C shows the different piece of the image-forming module of an embodiment.Fig. 8 B is the top view of the lens bracket of an embodiment.Fig. 8 C is the perspective view of multiple magnets of an embodiment.Fig. 8 A is lens bracket and the perspective view of multiple magnet of an embodiment.
The various piece of the different embodiment image-forming module of Fig. 9 A-9C display.
Figure 10 A-10B shows the lens bracket of an embodiment.
Figure 11 is the perspective view of an embodiment image-forming module.
Figure 12 A-12B is the sectional view of an embodiment image-forming module.
Figure 13 shows that object rotates about an axle being perpendicular to optical axis.
Figure 14 shows that embodiment uses the right-hand rule and the interaction of current carrying conductor in the magnetic field known.
The various piece of the different embodiment image-forming module of Figure 15 A-15B display.
Figure 16 A-16B shows the spring pattern being suitable for different embodiments.
Figure 17 shows the different embodiment parts of an embodiment image-forming module.
Figure 18 is the perspective view of an embodiment image-forming module.
[detailed description of the invention]
In following detailed description, it will illustrate numerous detail so as to understand this utility model comprehensively.But, it will be apparent to those skilled in the art that sometimes need not these details can also implement this utility model.It addition, in order to not obscure this utility model, method well-known to those skilled in the art, device or system will not describe in detail.
In description, " embodiment " refer at least one embodiment of this utility model with a particular embodiment about and the special feature, structure or the characteristic that describe.Therefore, " in the embodiment " occurred in description difference place is not necessarily referring to any one specific embodiment of same embodiment or description.Addition, it will be understood that in one or more embodiments, special feature, structure or the characteristic of description can be combined in every way.Certainly, generally these problems may change along with the specific use of context.So, can be provided with effect with reference to relevant context, the specific description of context or the use of these terms and guide.
Be used for describing these embodiments term " ... on ", " ... under ", " top ", " bottom " and " in ... side ", refer to the position of optical axis relative to this small-sized image-forming module.Especially, " ... on " and " ... under " refer to the position along optical axis, wherein " ... on " refer to the side of an element, and " ... under " refer to another opposition side of this element.Relative to " ... on " and " ... under ", " in ... side " is the side of finger element, and it deviates optical axis, around camera lens.Moreover, it should be understood that these terms are not necessarily referring to by gravity or any other is specific towards defined direction.On the contrary, these terms are only used for identifying that a part is relative to another part.Therefore, " top " and " bottom " can exchange with " top " and " bottom ", " first " and " second ", " right " and " left " etc.." level " can refer to be perpendicular to the direction of optical axis, and " vertical " can refer to be parallel to the direction of optical axis.
Embodiment described herein includes an image-forming module, it provides a mechanism and/or allows a process: adjusts the coke ratio (focalratio) between one or more independent lens assembly and one or more image inductor, and/or provides image stabilizing function (stabilization).Fig. 1 is the block diagram of an embodiment equipment 100.Equipment 100 can be to be the equipment of any kind or form, and such as electronic equipment such as handheld device, such as things such as mobile phone, panel computer, PDA, camera, computers.Equipment 100 can have multiple operation and/or module that function is relevant to it.These multiple modules can include hardware, software and/or a combination thereof.In one embodiment, equipment 100 includes image-forming module 102, interface module 104, I/O module 106 and processing module 108 etc..Image-forming module 102, interface module 104, I/O module 106, processing module 108 can be in communication with each other connection, in order to can send data to any one given module easily and receive data from any one given module.
Image-forming module 102 can include any module the most relevant to imaging.Such as, image-forming module 102 can be the combination of hardware and/or software, in order to can capture the image of given scenario.Such as, in one embodiment, an assembly of the image-forming module during image-forming module 102 can be a handheld device.
Interface module 104 can be any suitably and other module interfaces of user, equipment and/or equipment 100 and relevant module.Such as, interface module 104 can be the combination of hardware and/or software, in order to be provided that an interface is mutual with user to allow.In one embodiment, interface module 104 can send and receive the data relevant to graphic user interface, and user can interact.In another embodiment, the external equipment that interface module 104 can be easy to equipment 100 is communicatively coupled.Such as, interface module 104 can be transmitted about equipment 100 a external equipment and receive communication data.
I/O module 106 can be any module the most relevant with the input/output of equipment.Such as, I/O module 106 can be the combination of hardware and/or software, it is simple to relevant equipment 100 inputs and output function.
Processing module 108 can be any suitably relevant to the process of equipment 100 and/or calculating module.Such as, in one embodiment, processing module 108 can include a processor, is arranged to send and receive data and perform associated different processes.Such as, processing module 108 is able to receive that the function command of equipment 100 module, and performs this instruction.
Operationally, according to an embodiment of equipment 100, image-forming module 102, interface module 104, I/O module 106, processing module 108 can exchange data, the part run as equipment 100.Such as, the element that user can attempt to equipment 100 interacts.This user can be represented by a signal alternately.In one embodiment, this signal can produce in I/O module 106 at first.The command signal that so later is extra is sent to processing module 108.In one example, this user alternately may be relevant to the operation of image-forming module 102, initializes such as instruction image-forming module 102 and prepares to shoot image.Then image-forming module 102 shoots image, and sends multiple associated signal to processing module 108, I/O module 106 and/or interface module 104 etc..In one exemplary embodiment, the signal relevant to shooting image is stored in the memorizer of equipment 100, and memorizer can be non-transitory computer-readable storage media.Above-mentioned introduction is one of the equipment 100 exemplary description that may run, and is not construed as restrictive.
Fig. 2 is the block diagram of the image-forming module 202 of an embodiment.Fig. 2 shows the communication connection between the different piece of image-forming module 202, it is therefore intended that be interpreted that the word of the physical arrangement of image-forming module 202 describes.In this example, image-forming module 202 can be the combination of hardware and software, includes but not limited to lens assembly 210, actuator 212, controller 218, sensing module 220 and image inductor 250.Image-forming module 202 can include bus 222, and it is easy to the data transmitting and receiving between image-forming module 202 and/or external module and equipment.These and other modules of composition image-forming module 202 can be hardware, software and/or a combination thereof.
Lens assembly 210 is just like the isostructural combination of glass, plastics and/or metal, can receive and send electromagnetic radiation constituting an element, and at least one embodiment, this electromagnetic radiation includes visible ray.Certainly, lens assembly 210 may also include other 26S Proteasome Structure and Function.In one embodiment, lens assembly 210 can include one or more lens member (not shown), and they are operated together to reflect light.In certain embodiments, image-forming module 202 can include multiple lens assembly 210.
Actuator 212 can be any appropriate format can about image inductor 250 actuator of moving lens assembly 210 (vice versa).In one embodiment, actuator 212 can be the electromagnetic actuators including at least one magnet and at least one coil, is interacted by electromagnetic force between magnet and coil.Electromagnetic actuators can cause lens assembly 210 to move in one or more directions and/or cause lens assembly 210 to rotate around one or more axles.Electromagnetic actuators can be a magnet and coil actuator, and a voice coil motor (VCM), etc..Certainly, this utility model can include but not limited to the dynamo-electric actuator relevant with piezoelectricity there to be the actuator 212 of other forms.
Controller 218 can be hardware, software and any suitable combination thereof.Controller 218 can be the module that can change lens assembly 210 characteristic (including but not limited to that time of exposure, f-number, focal length and coke ratio and lens distortion map).Such as, in one embodiment, controller 218 can determine the distance from an object, the focal length of a camera lens, and can therefore adjust camera lens height.Controller 218 can also provide mobile and Spin Control for image-forming module 202.Such as, controller 218 can control the lens assembly 210 swing (tilt) about at least two axle.In some instances, controller 218 can be integrated on the same chip with one or more image inductors 250.Certainly, the foregoing function with other of controller 218, can be arbitrarily solely or partly to perform, can more briefly think that controller 218 is the symbolic representation of the hardware and software facilitating image-forming module 202 to run.
Optional sensing module 220 can be can sense lens assembly 210 about any hardware of the position of image inductor 250, software, and combinations thereof.In one embodiment, sensing module 220 can be an element sensing lens assembly 210 position according to magnetic field intensity.In another embodiment, sensing module 220 can be sensing electric current or the sensor of resistance, etc..Certainly, this utility model can also have any other suitable device or mechanism.
Bus 222 can transmit and receive data, is to and from lens assembly 210, actuator 212, controller 218, sensing module 220, image inductor 250 and the external equipment of image-forming module 202 and module.
Operationally, signal is received at image-forming module 202 by bus 222, and is sent to corresponding module.Signal can also be sent from image-forming module 202 by bus 222.Signal can be received between the module of image-forming module 202 by bus 222 and be sent.
Fig. 3 is the perspective view of an embodiment image-forming module 302.Image-forming module 302 includes a lens bracket 314, and lens bracket 314 is placed in upper shell 316 and yoke 324.Image-forming module 302 includes one for the lens assembly (not shown) capturing image.Lens assembly may be coupled to lens bracket 314.In one embodiment, lens assembly is integral in can be incorporated into lens bracket 314.Lens bracket 314 is connected to base 326.In one embodiment, controller 328 is connected to base 326.Except controller 328, also electronic circuit and power source (not shown) help the control of actuator.Image-forming module 302 can be an image inductor (not shown), is used for collecting refraction light.In one embodiment, lens bracket 314 and lens assembly can define an optical axis, and this optical axis is perpendicular to the X-axis shown in Fig. 3 and Y-axis.It should be understood, however, that X-axis and Y-axis in Fig. 3 are for the ease of understanding discussed below, should not be construed as the assembly of image-forming module 302 physical arrangement.
Operationally, lens bracket 314 can move along optical axis defined in the lens assembly in lens bracket 314.The movement of lens bracket 314 can be caused by electromagnetic actuators.Such as, a current signal can cause one or more electromagnetic force relative to electromagnetic actuators, can cause the movement of lens bracket 314.In one example, electromagnetic actuators can include the one or more magnets being connected to yoke 324, and is connected to the one or more coil of lens bracket 314.Electromagnetic actuators can cause lens bracket 314 along the movement of at least one axle, moreover it is possible to causes lens bracket 314 around the rotation of two or more axles.Such as, the one or more electromagnetic force causes the one or more coils being connected to lens bracket 314 relative to the movement of one or more magnets.The movement of lens bracket 314 can adjust the distance between lens bracket 314 inner lens assembly and image inductor, and image inductor receives refraction light from lens assembly.Such as, lens bracket 314 moves relative to described image inductor, by light focusing on image inductor.Image-forming module 302 also includes a spring mechanism being connected to lens bracket 314, assists lens bracket 314 to return to balance or neutral position.Spring mechanism can include spring and a lower spring on one.Such as, each lower spring and upper spring are helical springs (coilspring), and its diameter is more than the diameter of lens bracket 314.Lower spring and upper spring can also be flat spring (leafspring), and one or more flat springs are disposed adjacent to the respective end of lens bracket 314.Upper spring and lower spring can also be placed in different positions.Such as, it is all located at one end of lens bracket 314, close to each other.
It addition, lens bracket 314 can rotate around other axles.Such as, lens bracket 314 can rotate around Y-axis as shown in Figure 3, with a current signal in response to electromagnetic actuators.In another example, lens bracket 314 can rotate around X-axis as shown in Figure 3, with a current signal in response to electromagnetic actuators.In one embodiment, one or more current signals are sent to electromagnetic actuators, cause lens bracket 314 about X and/or the rotation of Y-axis.Lens bracket 314 can help to the function of image stabilization around the rotary motion of X and/or Y-axis.
Fig. 4 is the perspective view of lens bracket 414.Lens bracket 414 may be coupled to lens assembly (not shown).Fig. 4 shows the electromagnetic actuators of an embodiment, and it includes first coil the 430, second coil 432 and tertiary coil 434.First, second and tertiary coil 430,432 and 434 may be coupled to an outer surface of lens bracket 414.Can dispose first, second and tertiary coil 430,432 and 434 near one or more magnets of electromagnetic actuators.As used herein, if be each arranged in an electromagnetic field and/or another magnetic field, then a coil is adjacent to a magnet.First, second and tertiary coil 430,432 and 434 can be concentrically arranged on lens bracket 414 so that the first, second, third each center of coil 430,432 and 434 is all located on the optical axis of lens bracket 414.
Operationally, a current signal is sent to first coil 430.This electric current can result in the electromagnetic field between first coil 430 and one or more magnets of electromagnetic actuators.The electromagnetic field produced can cause optical axis that lens bracket 414 defines along lens bracket 414 to move.One current signal is sent to the second coil 432.This electric current can result in the electromagnetic field between the second coil 432 and one or more magnets of electromagnetic actuators.The electromagnetic field produced can cause lens bracket 414 to rotate around an axis being perpendicular to optical axis.One current signal is sent to tertiary coil 434.This electric current can result in the electromagnetic field between tertiary coil 434 and one or more magnets of electromagnetic actuators.The electromagnetic field produced can cause lens bracket 414 to rotate around an axis being perpendicular to optical axis.
According to required Control Cooling, electromagnetic actuators can include the part of independent operating and/or be electrically connected in series.According to an embodiment, for motor control, second coil 432 and tertiary coil 434 can be with separate connection so that can be independent of any electric current flowing through tertiary coil 434 by the electric current of the second coil 432, in order to lens bracket 414 can be had around out-of-alignment independent rotational movement.This self-movement allows accurately to control different functions, such as automatic focusing function and image stabilizing function.In one embodiment, auto-focusing and image stabilizing function can independent operating or combined runnings as desired.In another embodiment, can carry out independently according to the requirement of application-specific, the control of automatic focusing function and the control of image stabilizing function.
In one embodiment, first, second and tertiary coil 430,432 and 434 can be conductive material.Some element of image-forming module 302, such as housing and lens bracket 414, can be nonmagnetic substance, such as plastics or nonmagnetic metal alloy, in order to do not disturb the magnetic field of coil and magnet.
The different piece of Fig. 5 A-5C display image-forming module 502 and embodiment.One group of multiple magnet of the electromagnetic actuators of Fig. 5 A display image-forming module 502.In the present embodiment, arrange that 12 magnets, near one or more coils, are beneficial to movement and/or the rotation of lens bracket 514.Such as, dispose magnet 536a1,536b1,536c1,536d1 near first coil 530, dispose magnet 536a2,536b2,536c2,536d2 near the second coil 532, dispose magnet 536a3,536b3,536c3,536d3 near tertiary coil 534.As shown in Figure 5A, the surface of magnet 536a1-3,536b1-3,536c1-3 and 536d1-3 can be a polarity.As used herein, each magnet face is [N] or be [S] to the polarity on that surface of coil 530,532 and/or 534, and indicating is the arctic or the South Pole.It is therefoie, for example, magnet 536a1 in the face of that surface of first coil 530 be polarity ' N'.Such as those skilled in the art it will be appreciated that, the polarity listed in fig. 5, it is intended to describe and run, and be not understood to restrictive meaning.It is true that magnet of the present utility model and coil can have various polarity and arrangement perhaps.
Fig. 5 B shows the magnet of the electromagnetic actuators of the image-forming module 502 of another embodiment.This embodiment includes magnet 536a1,536b1,536c1,536d1 near first coil 530 and magnet 536c2, the 536d2 near the second coil 532, and the magnet 536d3 near tertiary coil.
Fig. 5 C shows the image-forming module 502 of an embodiment, wherein magnet (536a1 to 536d3) be placed in lens bracket 514 and first, second and tertiary coil 530,532,534 around.Operationally, provide current to first coil 530, this can cause generation electromagnetic force between first coil 530 and at least magnet 536a1,536b1,536c1,536d1, and electromagnetic force can cause lens bracket 514 to move along or parallel to the optical axis defined by lens assembly and lens bracket 514.Such as, current signal can cause the electromagnetic force of combination, and the electromagnetic force such as combined includes captivation and the repulsive force of electromagnetic actuators, this movement that be enough to cause lens bracket 514.
Thering is provided another electric current to the second coil 532, this can cause being formed between the second coil 532 and at least magnet 536a2,536b2,536c2,536d2 electromagnetic force.The electromagnetic force formed can cause lens bracket 514 to rotate normal or orthogonal to the axis of optical axis around one.Such as, in one example, the electric current provided can cause the rotation of lens bracket 514 so that lens bracket 514 swings around an axle.The electric current being supplied to the second coil 532 can be independent of being supplied to first or arbitrary electric current of tertiary coil 530 and 534.
Thering is provided another electric current to tertiary coil 534, this can cause producing between tertiary coil 534 and at least magnet 536a3,536b3,536c3,536d3 electromagnetic force.The electromagnetic force produced can cause lens bracket 514 to rotate normal or orthogonal to the axis of optical axis around one, in one embodiment, tertiary coil 534 produces the rotation axis of rotary motion and also produces the rotation axis of rotary motion normal or orthogonal to the second coil 532.This of lens bracket 514 moves and/or rotates corresponding to focusing and/or image stabilizing function.
Should be appreciated that in description above, each coil in first, second, third coil 530,532,534 can receive a current signal causing lens bracket 514 rotary motion, and they are separate.Such as, in one embodiment, one or more current signals are sent to first coil 530, and first coil 530 is the automatic focusing function about image-forming module 502.Therefore, first coil 530 is properly termed as auto-focusing coil.In this example, the current signal to first coil 530 is independently of arbitrary current signal of second and tertiary coil 532,534.Such as, first coil 530 receives a current signal, and second and tertiary coil 532,534 do not receive any current signal.It addition, in one embodiment, image-forming module 502 is supported to receive different size and/or the current signal of polarity at first, second, third coil 530,532,534.For example, it may be desirable to receive current signal A1 in first coil 530, and receive current signal A2 at second coil 532 simultaneously, receive current signal A3 at tertiary coil 534.It is thus possible, for instance, if it is desired to use the automatic focusing function of image-forming module 502, then current signal A1 is to first coil 530 in transmission, and this can cause lens bracket 514 to move along the optical axis of lens bracket 514.In one example, desire to the image stabilizing function of image-forming module 502 can be used while use automatic focusing function, transmission current signal A2 and A3 to second and tertiary coil 532 and 534 the most respectively, this can make lens bracket 514 rotate around the axle normal or orthogonal to optical axis.
In other example, multiple current signal can be transmitted to any one in first, second, third coil 530,532,534.Such as, in one embodiment, cause movement and/or the rotation of lens bracket 514, can be transmit the first current signal A1 to produce the first power, transmit the second current signal A2 subsequently to produce the second power.It is true that this utility model can have the current signal of any quantity, size, polarity and/or persistent period.
In one embodiment, first, second and/or tertiary coil 530,532,534 could be arranged to the different piece at coil, produce different electromagnetic fields.Such as, the second coil 530 can include the first and second parts, and can produce the first electromagnetic field according to a current signal at Part I, and produces the second electromagnetic field at Part II.In one embodiment, a coil (such as the second coil 532) can receive the first electric current at Part I, receives the second electric current at Part II, it is thus possible to produce two electromagnetic fields.Certainly, these embodiments being merely exemplary, it is not understood to restrictive.
The cross section of Fig. 6 A and 6B display image-forming module 602, can be regarded as the image-forming module 302 of Fig. 3 respectively along the view that x-axis and y-axis are crosscutting.As shown in Figure 6 A and 6B, image-forming module 602 includes upper shell 616, yoke 624 and base 626.The such as circuit of controller 628, can be integrated in base 626.Upper shell 616, yoke 624 and base 626 can be any suitable materials, include but not limited to the synthetic material of plastics and other lightweight.
Lens bracket 614 is positioned in the upper shell 616 of image-forming module 602, yoke 624 and base 626.In one embodiment, one or more springs (seeing Fig. 9 A-9C) assist to provide the function of image-forming module 602.In one embodiment, multiple coils such as first coil the 630, second coil 632, tertiary coil 634 is connected to lens bracket 614.On the concentric circular of the external surface peripheral that these coils such as first, second, third coil 630,632,634 can be placed in lens bracket 614.Or, first, second, third coil 630,632,634 can be placed in and (sees Fig. 7 A) on the diverse location of lens bracket 614 external surface peripheral.In one embodiment, first coil 630 can be more than second and tertiary coil 632,634.Such as, various sizes of coil potentially contributes to the movement of lens bracket 614, it is achieved automatic focusing function.
Dispose first, second, third coil 630,632,634 near multiple permanent magnets.In one embodiment, the magnet of image-forming module 602 can be placed on the turning of yoke 624.Therefore, each coil is near one or more magnets.Such as, arrangement first coil 630 is near magnet 636a1,636b1,636c1,636d1, as shown in Figure 6 A and 6 B.In the face of the part of magnet 636a1,636b1,636c1,636d1 of first coil 630 has a polarity.And, second and tertiary coil 632,634 be the most all located proximate to one or more magnet.
Operationally, first coil 630 receives one or more current signal.According to the one or more current signals received, produce an electromagnetic field about first coil 630 sensing.The electromagnetic field of sensing generation and the magnetic field interaction of one or more magnets such as 636a1,636b1,636c1,636d1.Therefore, the electromagnetic field that sensing produces can cause one or more power, such as captivation and/or repulsive force.Such as, according to the electric current provided, captivation and/or repulsive force can cause the movement of lens bracket 614.In one example, the one or more power caused drive lens bracket 614 along the optical axis of lens bracket definition like this.Such as, lens bracket 614 can the most arbitrarily vertically move along the optical axis of lens bracket 614, as shown in Figure 6 A and 6 B.In this example, the movement of lens bracket 614 may be used for changing focal length or coke ratio.Such as, this operation logic may be used for the automatic focusing function of image-forming module 612.
Any current signal received independent of first coil 630, the second coil 632 can receive one or more current signal.According to the one or more current signals received, the electromagnetic field that sensing produces can cause the one or more power between the second coil 632 and one or more magnet (such as magnet 632a2,632b2,632c2,632d2).The one or more power can cause lens bracket 614 move about an axis and/or rotate, this orthogonal axe or be perpendicular to the optical axis defined by lens bracket 614.Such as, the rotation of lens bracket 614 may be about the rotation of the x-axis shown in Fig. 5 C and y-axis.Therefore, more generally, in one embodiment, be applied to second and/or tertiary coil 632,634 on one or more current signals lens bracket 614 can be caused to swing about the axle orthogonal with lens bracket 614 optical axis.In one example, second and tertiary coil 632,634 be properly termed as revolving coil.This operation logic can be used for the function that image stabilization (stabilization) is relevant.
In one embodiment, coil (as second and tertiary coil 632,634) can be arranged to contribute to pivoting.Such as, the second coil 632 can include at least the first and second parts, senses an electromagnetic field of generation, can be differently configured from the first and second parts of the second coil 632 on the second coil 632.A kind of situation is, the first electromagnetic field X1N/C can sense the generation Part I at the second coil 632, and the second electromagnetic field X2N/C sensing produces the Part II at the second coil 632.So that it takes up a position, for example, a captivation may produce at the second coil 632 Part I, a repulsive force may produce the Part II at the second coil 632.Discussion above is readily adaptable for use in tertiary coil 632.Certainly, description above is used to basic function is described, should not be taken in a limiting sense.It is true that this utility model can have unlimited number of different embodiment.
In one embodiment, independent current signal is sent to first, second and/or tertiary coil 630,632,634.A kind of situation is, simultaneously or part is simultaneously or at different time can transmit independent current signal.It is possible to function aspects broadly get on very well, an example of the result of this principle is that the automatic focusing function of lens bracket 614 can run independent of the image stabilizing function of lens bracket 614.Therefore, while lens bracket 614 can move along optical axis, moreover it is possible to be orthogonal to the axle of optical axis around at least one and rotate.In this example, image-forming module 602 can have automatic focusing function, the most simultaneously has stabilization function.It should be pointed out that, it will be appreciated by the skilled addressee that this is a result of aforementioned operation logic.
It addition, one or more springs may be coupled on lens bracket 614, it is possible to as desired lens bracket 614 is returned to neutrality and/or resting position.Such as, in one embodiment, apply one or more current signal to first coil 630, may result in lens bracket 614 and move along optical axis.Having shot image at certain time point, lens bracket 614 can be returned to resting position by a spring or other mechanical and/or dynamo-electric mechanism.
Fig. 7 A-7E shows each assembly and the view of an embodiment image-forming module 702.Such as, Fig. 7 A and Fig. 7 B is perspective view and the side view of lens bracket 714 respectively.Lens bracket 714 can include an electromagnetic actuators, and electromagnetic actuators includes a first coil 730 being connected on lens bracket 714 surface.Lens bracket 714 also includes at least one first coil group 732 (it includes coil 732 (1) and 732 (2)) and at least one the second coil groups 734 (it includes coil 734 (1) and 734 (2)).Such as, the first coil 732 (1) of first coil group 732 is in the primary importance of lens bracket 714, and the second coil 732 (2) is in the second position of lens bracket 714.Coil 732 (1) and 732 (2) is placed on lens bracket, and in the reciprocal side of lens bracket 714.Such as, coil 732 (1) and 732 (2) can dispose on an axis, in y-axis as shown in Figure 7 A, so that it is on the opposite side of lens bracket 714.Similarly, the second coil groups 734 includes coil 734 (1) and 734 (2), and they are also placed on the opposite side of lens bracket 714.
The electromagnetic actuators of image-forming module 702 can also include multiple magnet, as shown in figures 7 c-7e.Fig. 7 C shows a kind of possible magnetic arrangement of an embodiment.Such as, image-forming module 702 can include multiple magnet, and they dispose near coil, such as first coil 730 and first coil group 732.In one embodiment, the magnet of image-forming module 702 includes magnet 736a1,736b1,736c1, the 736d1 disposed near first coil 730.In one embodiment, magnet 736a2 and 736d2 is near first coil group 732, and magnet 736b2 and 736c2 is near the second coil groups 734.Therefore, it can arrange lens bracket 714 makes the combination of coil 732a, 732b and magnet 736a2,736d2 can result in lens bracket 714 around the x-axis rotation shown in Fig. 7 A.The combination of coil 734a, 734b and magnet 736b2,736c2 is made to can result in lens bracket 714 around the y-axis rotation shown in Fig. 7 A furthermore, it is possible to arrange lens bracket 714.Certainly, this utility model can have the electromagnetic actuators of any magnet and coil combination, and possible structure previously discussed and arrangement are not construed as restrictive.
Operationally, image-forming module 702 receives one about changing image-forming module 702 focal length or the signal of coke ratio.Such as, the signal received can be about by relative to image inductor (not shown), moving lens is increased or decreased focal length or coke ratio.In this case, first coil 730 can receive one or more current signal.According to the one or more current signal, sense one electromagnetic field of generation about first coil 730, the electromagnetic field that sensing produces can cause one or more power between first coil 730 and at least one magnet (such as magnet 736a1,736b1,736c1,736d1).The one or more power can be captivation or repulsive force.According to the one or more power, lens bracket 714 can be driven to move along optical axis relative to image inductor and/or the magnet of the electromagnetic actuators of lens bracket 714.
Image-forming module 702 can also receive about lens bracket 714 around the one or more signals being perpendicular to one or more axles of optical axis and rotate.Such as, the one or more signals received can rotate around x shown in Fig. 7 A or y-axis about lens bracket 714.In one embodiment, one or more current signal is received in the first or second coil groups 732,734.Such as, if the one or more signals received all rotate around y-axis about lens bracket 714, then coil 734a and 734b receives one or more current signals, and produces one or more power.One or more power of this generation can be captivation or repulsive force.Such as, coil 734a receives the magnetic field interaction between one or more current signal, and magnet 736c1 and magnet 736c2, produces a downward power；And coil 734b receives the magnetic field interaction between one or more current signal, and magnet 736b1 and magnet 736b2, produce a power upwards.Therefore, the combination of the power of generation can make lens bracket 714 rotate around y-axis.Those skilled in the art are it will be appreciated that the similar operation around other axles, such as x-axis can also be realized.It is true that lens bracket 714 rotates can realize to coil 732a and 732b by providing one or more current signals around x-axis.
In one embodiment, by only a coil with electric current signal in given coil groups (such as coil 732a and 732b), it is possible to achieve similar function.Such as, lens bracket 714 can be configured so that realization pivots, x-axis as shown in Figure 7 A, and one or more current signals can be sent to one in 732a and 732b.In this case, the one or more current signals transmitted can produce a power, it is sufficient to causes the rotation around x-axis.In an example of such operation, coil 732a receives one or more current signal, produces one or more power, and these power be enough to cause the rotation around x-axis.Certainly, discussion above illustrates that general operation logic, should not understand in the sense that restricted.
Fig. 8 A-8B shows another embodiment of the present utility model.It is true that Fig. 8 A and 8B display image-forming module 802 includes lens bracket 814, first coil 830, first coil group 832 (including coil 832a and 832b) and the second coil groups 834 (including coil 834a and 834b).Image-forming module 802 also includes multiple magnet, such as magnet 836a1-836d2.In one embodiment, magnet 836a2-836d2 can be with magnet 836a1-836d1 different size.The difference of size can be enough to accommodate one or more coil, such as first coil group 832 and the second coil groups 834.First coil group 832 and the second coil groups 834 can be placed in the bottom of lens bracket 814.First and second coil groups 832,834 can define one or more plane being perpendicular to optical axis.First coil group 832 and the second coil groups 834 can be partially positioned under magnet 836a1-836d1, and the polar surfaces of adjacent magnet 836a1-836d2.
Operationally, one or more current signals are sent on the coil of electromagnetic actuators, to promote the motion of lens bracket 814.Such as, as discussed above, the one or more current signals in first coil 830 can cause one or more electromagnetic force, drives lens bracket 814 to move along optical axis.Additionally, one or more current signals that first coil group 832 receives, lens bracket 814 can be promoted to rotate around the axis (x-axis as shown in Figure 8 A) being perpendicular to optical axis.Second coil groups 834 can also receive one or more current signal, also promotes the rotary motion of lens bracket 814, such as, rotates about the y-axis shown in Fig. 8 A.
Fig. 8 C shows magnet 836a, 836b, 836c and 836d.Image-forming module 802 also receives one or more signal rotated about lens bracket 814 around the one or more axles being orthogonal to optical axis.Such as, the one or more signals received, rotate around x-axis shown in Fig. 8 A or y-axis about lens bracket 814.In one embodiment, the first and/or second coil groups 832,834 receives one or more current signal.Such as, if the one or more signals received rotate around y-axis about lens bracket 814, then the second coil groups 834 can receive one or more current impulse, and produces one or more power.Such as, a coil in the second coil groups 834 receives one or more current signal, produces a downward power, and this downward power is to produce due to the interaction in the magnetic field between electromagnetic field and magnet 836c1 and 836c2 of the second coil groups 834.It addition, such as, a coil in the second coil groups 834 receives one or more current signal, produces a power upwards, and this power upwards is to produce due to the interaction in the magnetic field between electromagnetic field and magnet 836b1 and 836b2 of the second coil groups 834.Therefore, the combination of the power of generation be enough to make lens bracket 814 rotate around y-axis.It will be appreciated by the skilled addressee that and can also realize the similar operation around other axles, such as x-axis.It is true that lens bracket 814 can realize to first coil group 832 by providing one or more current signals around the rotation of x-axis.
The different embodiments of Fig. 9 A-9C display image-forming module 902.With reference to Fig. 9 A-9C, image-forming module 902 includes a upper shell 916, and upper shell is connected to pad 942 and/or upper spring 938.Pad 942 and upper spring 938 are connected to yoke 924 and/or lens bracket 914.Multiple magnets are connected to yoke 924.Such as, magnet 936a, 936b, 936c, the 936d shown in Fig. 9 A is placed in the inner surface of yoke 924.In another embodiment, magnet 936a1-936d2 can be placed in the inner surface of yoke 924.Lens bracket 914 is placed in shell body so that the multiple coils being connected to lens bracket 914 are all close with the magnet in yoke 924.Such as, in one embodiment, first coil the 930, second coil 932, tertiary coil 934 can be placed in lens bracket 914 external surface peripheral, as shown in Figure 9 A in concentric circular (or other suitable shapes, such as hexagon and octagon etc.) mode.In another embodiment, first coil group 932 (including coil 932a and 932b) and the second coil groups 934 (including coil 934a and 934b) may be coupled to lens bracket 914, and it is located proximate to magnet, as being connected to the 936a1-936d2 on yoke 924 inner surface, as shown in Figure 9 B.Lens bracket 914 may be coupled to a lower spring 940 and base 926.
In one embodiment, upper spring and lower spring 938,940 be all about one or more divide equally axisymmetric.The symmetry of upper spring and lower spring 938,940 can affect the position of center of rotation, and this can affect the oscillating motion of lens bracket 914.Such as, it is general all on optical axis that the symmetry of spring helps to maintain center of rotation, and minimizes and/or limit the translational motion of lens bracket 914.
Figure 10 A and 10B is perspective view and the side view of a lens bracket 1014 respectively.In an embodiment, lens bracket 1014 can include an electromagnetic actuators, it first coil 1030 including receiving lens bracket 1014 surface.Lens bracket 1014 also includes at least first coil group 1032 (it comprises coil 1032a and 1032b) and at least the second coil groups 1034 (it comprises coil 1034a and 1034b).
In an embodiment, first coil group 1032 is included in the coil 1032a in lens bracket 1014 primary importance and the coil 1032b in lens bracket 1014 second position.Coil 1032a and 1032b is positioned in the reciprocal side of lens bracket 1014.Such as, coil 1032a and 1032b is positioned in y-axis as shown in Figure 10 A, is positioned in the opposite sides along y-axis of lens bracket 1014.
Additionally, in an embodiment, the coil 1032a and coil 1032b of first coil group 1032 place about first coil 1030 so that a part for first coil 1030 passes coil 1032a and the opening of coil 1032b.This arrangement makes first coil 1030 and first coil group 1032 be about coplanar.It practice, as shown in Figure 10 A, a horizontal plane, such as plane A of Figure 10 A, the most parallel with x-axle and/or y-axle, and run through the central authorities of first coil 1030.It is furthermore noted that plane A is also through first coil group 1032 and the second coil groups 1034, as shown in the dotted line intersected with coil 1034a and 1032a vertical component.Therefore, it can be said that under such arrangement, first coil 1030 and first/second coil groups 1032/1034 are the most coplanar.Will be apparent to, in an embodiment, no matter first coil 1030 is in the center of first coil group 1032 opening, or first coil 1030 is positioned at the eccentric position (such as Figure 10 B) of first coil group 1032 opening, traverse the plane being parallel to x-and/or y-axle shown in Figure 10 A of first coil 1030, can intersect with first coil group 1032 all the time.Advantageously, coil such as first coil 1030 and the coplanar relation of first coil group 1032, image-forming module can be made to have a size less than traditional method.
In an embodiment, the second coil groups 1034 includes coil 1034a and 1034b, and it is also arranged in the reciprocal side of lens bracket 1014.Such as, coil 1034a and 1034b is arranged on x-axle as shown in Figure 10 A, and is positioned on the opposite flank along x-axle of lens bracket 1014.In an embodiment, first coil 1030, first coil group 1032 and/or the second coil groups 1034 are positioned on a roughly the same horizontal level of optical axis.That is, in an embodiment, first coil 1030, first coil group 1032 and the second coil groups 1034 are the most coplanar.
An embodiment, first coil 1030 can be placed so that a part for first coil 1030, through the opening of the second coil groups 1034, is similar to above-mentioned first coil 1030 and the arrangement of first coil group 1032.
Figure 10 A shows three axis: x-axle, y-axle and z-axis.In an embodiment, z-axis can approximate and/or be nearly parallel to the optical axis of image-forming module.X-axle and y-axle are perpendicular or normal to optical axis, or the z-axis shown in Figure 10 A.It addition, x-axle and y-axle are again orthogonal.At an embodiment of the present utility model, lens bracket such as lens bracket 1014, can move along optical axis, thus realize focus function.Lens bracket such as lens bracket 1014, it is also possible to rotate about one or more axles being perpendicular to lens bracket optical axis.Therefore, in one case, lens bracket 1014 can be parallel to the z-axis of Figure 10 A and move, and/or rotates about x-axle and/or the y-axle of Figure 10 A.
In order to be described, in an example, one or more electromagnetic actuators comprise first coil 1030, first coil group the 1032, second coil groups 1034 and/or one or more magnet, electromagnetic actuators can make lens bracket 1014 along and/or be parallel to its optical axis (z-axis as in Figure 10 A and Figure 10 B) and move, for focus function (such as auto-focusing).It addition, the one or more electromagnetic actuators can also make lens bracket 1014 rotate, for image stabilizing function about one or more axles being perpendicular to (or being approximately perpendicular to) lens bracket 1014 optical axis.Such as, in one case, between coil 1032a and/or coil 1032b and one or more magnet of first coil group 1032, produce an electromagnetic field, thus cause the rotary motion of the x-axle about Figure 10 A.Similarly, between first coil 1034a and/or the second coil 1034b and one or more magnet of the second coil groups 1034, produce an electromagnetic field, thus cause the rotary motion of the y-axle about Figure 10 A.In one case, about the rotary motion of one or more axles being perpendicular to optical axis (such as the z-axis of Figure 10 A), lens bracket 1014 can be allowed to keep stable, to offset its potential motion when image-forming module shooting image.
Figure 10 B is the side view of the electromagnetic actuators assembly of an embodiment image-forming module.As shown in Figure 10 B, in an embodiment, first coil 1030 is positioned at coil 1032a and first coil 1034a of the second coil groups 1034 of first coil group 1032, and position slightly offsets.As described in behind, can be based at least partially on magnet size, polarity, towards and/or the expectation of lens bracket 1014 move, select the position arrangement of coil.
Figure 11 is the perspective view of an image-forming module 1102, describes the magnet configuration consistent with an embodiment.In an embodiment, lens bracket 1114, first coil can be selected (to be obscured in fig. 11, but the first coil 1030 in Figure 10 A and Figure 10 B is visible), first coil group the 1032, second coil groups 1034 and the configuration of magnet 1036a, 1036b, 1036c and 1036d, so that lens bracket 1114 can be parallel to optical axis (such as z-axis) and move, and lens bracket 1114 is made to be rotated about one or more axles (i.e. rotating about x-axle and/or y-axle) being perpendicular to optical axis.
In an embodiment, magnet size and/or polarity can be selected, so that lens bracket 1114 moves along its optical axis and/or is rotated about one or more axles being perpendicular to optical axis.Such as, in one case, magnet 1136a can comprise some or multiple magnet.Briefly, comprise some or the magnet of opposed polarity part, and comprise the magnet of the multiple single magnet with respective polarity, be the most only referred to only as magnet.Therefore, the up or down magnet mentioned in literary composition or magnet part, it is not construed as restrictive implication.Returning to Figure 11, upper magnet such as upper magnet 1136a1 is greater than lower magnet such as lower magnet 1136a2.Such as, one or more coil such as first coil can be based at least partially on (be occluded in fig. 11, but the first coil 1030 in Figure 10 A and Figure 10 B is visible) and the size of one or more coil groups (such as first coil group 1032 and the second coil groups 1034) and configuration, and select the size of upper magnet.In one case, size and/or the configuration of upper magnet can be selected, so that it is completely or nearly adjacent to first coil (first coil 1030 in such as Figure 10 A) and part first coil group, such as first coil group 1132.It is likewise possible to select size and/or the configuration of lower magnet (such as lower magnet 1136a2), so that first coil is not adjacent to lower magnet, and part first coil group is adjacent to lower magnet.Like this, magnet and the size of coil and configuration can be selected, to isolate the interaction of electromagnetism as desired, consequently facilitating lens bracket 1114 moves.It should be understood that this utility model also has other embodiments.Such as, in discussion above, first coil is near upper magnet (such as 1136a1), and in another embodiment, in contrast, first coil can be placed a neighbouring bigger lower magnet (not shown).It addition, term "up" and "down" here is only easy for the subjective term being described.
When selecting magnet for electromagnetic actuators, another factor to be considered is polarity.Such as, in an embodiment, can be by first polar configurations of upper magnet 1136a1 on that surface of lens bracket 1114, by the second polar configurations on that surface of lens bracket 1114.As a example by the upper magnet 1136a1 of Figure 11, upper magnet 1136a1 has the first polarity S on the outer surface, has the second polarity N on the inner surface towards lens bracket 1114.In contrast, lower magnet 1136a2 has the first polarity N on the outer surface, has the second polarity S on the inner surface towards lens bracket 1114.Therefore, in an embodiment, the surface polarity of the first magnet (such as upper magnet 1136a1) likely differs from thereon, it lower and/or the surface polarity of close the second magnet (such as lower magnet 1136a2).
In an embodiment, the optical axis (such as z-axis) that one electromagnetic actuators comprising multiple coil and multiple magnet can make lens bracket 1114 be parallel to lens bracket 1114 moves, and makes lens bracket 1114 be rotated about one or more axles (such as x-axle and/or y-axle) being perpendicular to optical axis.
Figure 12 A and Figure 12 B shows the cross sectional representation of image-forming module 1202 when the image-forming module 1102 of Figure 11 is separated along x-axle and y-axle.As illustrated in figs. 12 a and 12b, image-forming module 1202 includes yoke 1224 and base 1226.Circuit such as controller (not shown) can be integrated in base 1226.Yoke 1224 and base 1226 can comprise any suitable material, including being singly not limited to plastics, metal, metal alloy and other light weight composite material.
Lens bracket 1214 can be positioned in yoke 1224 and the base 1226 of image-forming module 1202.In an embodiment, one or more springs (Figure 15 A and the 1538 of Figure 15 B and 1540) can assist in the function providing image-forming module 1202, as lens bracket 1214 is returned to resting position.In an embodiment, multiple coils such as first coil 1230, first coil group 1232 and the second coil groups 1234 may be connected to lens bracket 1214.First coil 1230 and the first and second coil groups 1232 and 1234 can be respectively positioned on the diverse location outside lens bracket 1214 (such as Figure 10).In an embodiment, first coil 1230 is more than the first and second coil groups 1232 and 1234.Such as, various sizes of coil contributes to making lens bracket 1214 move, as being used for realizing focus function (such as auto-focusing), as changed the focal length of image-forming module 1202.In an embodiment, first coil 1230 and the first and second coil groups 1232 and 1234 can be respectively disposed on same on optical axis or similar level position, can be counted as the most coplanar.In embodiment, as illustrated in figs. 12 a and 12b, if plane A of a plane such as Figure 10 A, through at least some of first coil 1230, then this plane also extends through part the first and second coil groups 1232 and 1234.Such as, the vertical component of first coil group 1232 intersects with this plane, and the vertical component of the second coil groups 1234 also intersects with this plane (be can't see at Figure 12 A and Figure 12 B, because cross section does not show those vertical components of the first and second coil groups 1232 and 1234, but it is appreciated that dotted line passes first coil 1230 and coil 1034a and 1032a with reference to Figure 10 A).Embodiment as described above, wherein first coil 1230 disposes about the first and second coil groups 1232 and 1234, make a plane that is that be perpendicular to optical axis and that intersect with first coil 1230, and at least some of first and second coil groups 1232 and 1234 are counted as the most coplanar.
In an embodiment, first coil 1230 and the first and second coil groups 1232 and 1234 are placed respectively near multiple permanent magnet 1236a-1236d.In another embodiment, magnet can be positioned in the turning of yoke 1224, as shown in fig. 15b.Therefore, each coil is near one or more magnets.Such as, first coil 1230 and (first coil group 1232) second coil 1232b can be configured near magnet 1236c, as illustrated in fig. 12.First coil 1230 and (the second coil groups 1234) second coil 1234b can be configured near magnet 1236d, as shown in Figure 12 B.First coil 1230 and (first coil group 1232) first coil 1232a can be configured near magnet 1236a, as illustrated in fig. 12.First coil 1230 and (the second coil groups 1234) first coil 1234a can be configured near magnet 1236b, as illustrated in fig. 12.
In an embodiment, it is possible to use the configuration of the most one or more magnet of one or more coils, with the operation of convenient electromagnetic actuator.Figure 12 A shows that the upper part of (first coil group 1232) first coil 1232a and a part of first coil 1230 are adjacent to upper magnet 1236a1.The lower part of (first coil group 1232) first coil 1232a is adjacent to lower magnet 1236a2.Similarly, the upper part of (first coil group 1232) second coil 1232b and a part of first coil 1230 are adjacent to lower magnet 1236c1.The lower part of (first coil group 1232) second coil 1232b is adjacent to lower magnet 1236c2.
During operation, one or more current impulses or current signal are sent to first coil 1230 and/or first coil group 1232, so as to produce one or more electromagnetic force and/or magnetic field, so that lens bracket 1214 produces mobile.Such as, electromagnetic actuators can make lens bracket 1214 its optical axis parallel move.For the ease of describing, with reference to Figure 14, its two magnets of display are near coil, and one of them is bigger upper magnet, another less lower magnet (as above with lower magnet 1236a1 and 1236a2).As it can be seen, magnetic field is produced by magnet, as shown in exemplary magnetic field wire M in figure.The same right-hand rule is described, and so contributes to the produced magnetic field of reader understanding, active force and/or the direction of movement.As it can be seen, the coil that one or more current impulses are applied on lower position (if the direction of electronics flowing is by shown in the thumb of the right-hand rule).Corresponding the one or more current impulse, electrical forces (as) and magnetic force (as) can produce a total force (as), it can make the coil of Figure 14 be moved.This is explained and is applied to the lens bracket 1214 of Figure 12 A, the one or more current impulses being applied in the primary importance (such as the latter half) of first coil group 1232 also be enough to produce a total force (as), as shown in figure 14.As in an example being similar to shown in Figure 14, a part (under first coil 1230 and adjacent to the latter half of 1232a as described in lower magnet 1236a2) for first coil group 1232 can accept one or more current impulse on a direction being similar to shown in Figure 14, and can produce an active forceIt makes coil do to be parallel to force directionMovement.
Similarly, at the upper coil of Figure 14, the one or more current impulses with lower coil different directions be enough to make upper coil also be parallel to active forceDirection move.Additionally, the coil of use one current loop as described in Figure 14, utilize same current impulse, it is possible to produce the active force of an opposed coil upper and bottom section.Such as, if the lower half-coil of Figure 14 connects and loop is to upper half-coil, the current signal advanced along thumb direction at lower half-coil is also by consistent with the right-hand rule on upper half-coil, and produces same active force upwardsAs the most as would be known to one of ordinary skill in the art, the configuration of the selection of one or more current impulses, one or more magnet, magnet size, the selection of polarity and configuration and all these assembly can form a device, and they can be in multiple directions and/or towards moving up.Such as, just as described above, in an embodiment, lens bracket can be parallel to its optical axis and move, and lens bracket also is able to rotate about one or more axles being perpendicular to its optical axis.Such as, the top half (above first coil 1230 and adjacent to the top half of 1232a as described in upper magnet 1236a1) of first coil group 1232, one or more current impulse can be received, the sense of current (because loop structure of first coil group 1232) that this sense of current is different from first coil group 1232 the latter half, can produce an active force upwards
Figure 13 shows camera lens and/or the optical axis of lens bracket and an axle (x-axle or y-axle) being perpendicular to optical axis.Consistent with the above, electromagnetic actuators is likely to make camera lens and/or lens bracket produce the rotary motion about an axle being perpendicular to optical axis.
Returning to Figure 12 A and 12B, first coil 1230 receives one or more current signal.According to received the one or more current signal, an electromagnetic field about first coil 1230 can be produced.The electromagnetic field produced and the magnetic field interaction of one or more magnets such as 1236a-1236d.As a result, the electromagnetic field of generation can produce one or more active force, such as the magnetic force attracted and/or repel.Such as, lens bracket 1214 can be made to produce according to the electric current provided, captivation and/or repulsive force mobile.In one case, produced one or more active force can promote lens bracket 1214 to move along lens bracket 1214 optical axis.Such as, lens bracket 1214 can vertically move up and down along the optical axis of lens bracket 1214, and as illustrated in figs. 10 a and 10b, the optical axis of lens bracket 1214 is parallel to z-axis.In this example, the movement of lens bracket 1214 can be used to change focal length or coke ratio.These operation logics can be used for the focus function of image-forming module 1202, such as automatic focusing function.
Any current signal received from first coil 1230 is different, and first coil group 1232 can receive other one or more current signals.According to the one or more current signals received, the magnetic field of generation can produce one or more active force between first coil group 1232 and one or more magnet such as magnet 1236a and 1236c.The one or more active force can make lens bracket 1214 produce motion about an axle being perpendicular to lens bracket 1214 optical axis and/or rotate.Such as, the rotation of lens bracket 1214 can be about the x-axle shown in Figure 10 A and any one axle in y-axle.Therefore, in an embodiment, in a general sense, the one or more current signals to the first and/or second coil groups 1232 and 1234 can make lens bracket 1214 produce shake or rotary motion about the axle being perpendicular to lens bracket 1214 optical axis.In an example, the first and second coil groups 1232 and 1234 can be counted as revolving coil.These operation logics can be used for image stabilizing function etc..
Return to Figure 12 A and magnet 1236a1 and the 1236c1 configuration relative to first coil 1230, it is also possible to send one or more current impulse or current signal to first coil 1230 to produce one or more electromagnetic force, as described in above about Figure 14.Really, an embodiment, it is possible to produce an active force and be enough to make lens bracket 1214 be parallel to its optical axis and move.
An embodiment, it is also possible to produce one or more active force relative to first coil group 1232 so that lens bracket 1214 produces rotation about an axle being perpendicular to lens bracket 1214 optical axis.Such as, consistent with Figure 14, first group of current impulse is sent to the latter half of first coil 1232a to produce the active force of a upward directionThe top half that second group of current impulse is sent to first coil 1232a produces the active force of a upward direction equallyAs a result, a part for the lens bracket 1214 being connected with first coil 1232a can be by the active force of a upward direction.Simultaneously or almost simultaneously, first group of current impulse is sent to the top half of the second coil 1232b, and second group of current impulse is sent to the latter half of the second coil 1232b.The current impulse being sent to the second coil 1232b be enough to produce a downward active forceSo that a part for the lens bracket 1214 being connected with the second coil 1232b moves down.In one case, multiple current impulses the active force produced be enough to make lens bracket 1214 be rotated about an axle (about the x-axle as described in Figure 11) being perpendicular to lens bracket optical axis.
Figure 12 B shows image-forming module 1202 sectional view from different perspectives.In an embodiment, (the second coil groups 1234) first coil 1234a can be placed near upper magnet 1236b1 and lower magnet 1236b2.(the second coil groups 1234) second coil 1234b can be placed near upper magnet 1236d1 and lower magnet 1236d2.Such coil and magnetic arrangement may be used for stabilization function, and this is consistent with the description of figure 13 above and Figure 14.An embodiment, first coil 1230 can be placed near upper magnet 1236b1 and another upper magnet 1236d1.Like this, the one or more current impulses to first coil 1230 can make lens bracket 1214 produce the movement being parallel to image-forming module 1202 optical axis.Such coil and magnetic arrangement can be used for focus function (such as auto-focusing), and this is consistent with the description of figure 14 above.
In another embodiment, coil the such as first and second coil groups 1232 and 1234 can be provided so that and rotate about axle in lens bracket.Such as, first coil group 1232 comprises at least first coil 1232a and the second coil 1232b, and the electromagnetic field produced in first coil group 1232 is possibly for being different for first coil 1232a and the second coil 1232b.In one case, the first electromagnetic field X1N/C can produce in first coil 1232a, and the second electromagnetic field X2N/C is probably on the second coil 1232b generation.Therefore, first coil 1232a produces a captivation, and on the second coil 1232b, produces a repulsive force.Above discussion is applied equally to the second coil groups 1234.Certainly, above discussion is used to basic function is described, is not intended to restrictive.Really, can there is unlimited number of different embodiment according to this utility model principle.
An embodiment, independent current signal can be respectively transmitted to first coil 1230 and/or the first and/or second coil groups 1232 and 1234.In one case, independent current signal can simultaneously, part simultaneously or the transmission of different time sections ground.According to possible function broadly, an Example results of this principle is, the focus function (such as auto-focusing) of lens bracket 1214 can be with independent operating in the picture steadiness of lens bracket 1214 or stabilization function.Therefore, lens bracket 1214 can move along optical axis, it is also possible to is orthogonal to the axle of optical axis about at least one and rotates.In an example, image-forming module 1202 can have automatic focusing function, and have image stabilizing function the most simultaneously.
Additionally, one or more springs (such as the spring 1538 and 1540 of Figure 15 A) may be connected to lens bracket 1214, it is possible to desirably lens bracket 1214 is withdrawn into neutrality and/or resting position.Such as, in an embodiment, one or more current signal can be applied to first coil 1230, make lens bracket 1214 produce along optical axis mobile.When certain time point shooting image, camera lens adds 1214 and can return to resting position by spring or other machinery and/or electromagnetism mechanism.
The different embodiments of Figure 15 A-15B display image-forming module 1502.Together with reference to Figure 15 A-15B, image-forming module 1502 comprises a pad 1542 and/or a upper spring 1538 and/or a spring shim 1544.Pad 1542, upper spring 1538 and spring shim 1544 are connected to yoke 1524 and/or lens bracket 1514.Multiple magnets are connected to yoke 1524.Such as, shown in Figure 15 A, magnet 1536a, 1536b, 1536c and 1536d are positioned in the inner surface of yoke 1524.In another embodiment, magnet 1536a, 1536b, 1536c and 1536d can be positioned on the inner surface at yoke 1524 turning, as shown in fig. 15b.Shim pack 1546 is placed between magnet 1536a, 1536b, 1536c and 1536d, as shown in fig. 15.Lens bracket 1514 is placed in yoke 1524 so that the multiple coils on lens bracket 1514 can be near the magnet in yoke 1524.Such as, in an embodiment, first coil 1530, first coil group can be respectively positioned on the same or similar horizontal level of optical axis with 1534 with the second coil groups 1532.First coil 1530 is positioned on the outer surface of lens bracket 1514.First and second coil groups 1532 and 1534 are respectively positioned on the outer surface of first coil 1530, as described in the embodiment of Figure 10 A and Figure 10 B so that a part for first coil 1530 can interfix across or through the opening of the first and second coil groups 1532 and 1534.The shape of first coil 1530 can be circular, or other suitable shape, such as hexagon, octagonal, ellipse or rectangle etc..
In an embodiment, upper spring and lower spring 1538 and 1540 can divide axial symmetry or substantially symmetric equally about one or more.The symmetry of upper spring and lower spring 1538 and 1540 can affect the position of center of rotation, and it can affect the jitter motion of lens bracket 1514.Such as, the symmetry of spring helps to maintain center of rotation on optical axis, and minimizes and/or limit the translational motion of lens bracket 1514.In an embodiment, base 1526 is connected to yoke 1524, with the element of support image-forming module 1502.Nevertheless, it should be recognized that, in an embodiment, electromagnetic actuators and lens bracket 1514 are positioned between spring and lower spring 1538 and 1540.
The upper spring of Figure 16 A and Figure 16 B display different designs embodiment and lower spring 1638 and 1640, consistent with the center of rotation of above-mentioned maintenance lens bracket such as lens bracket 1514.Different shapes can be had, as shown in Figure 16 A at an embodiment, upper spring and lower spring 1638 and 1640.In another example, upper spring and lower spring 1638 and 1640 can be similar to Figure 16 B.The design of spring is consistent with discussed above, to produce desired motion and/or rotation.
Figure 17 shows a part for the image-forming module of an embodiment.Contrary with embodiment described above (its coil is positioned on lens bracket), embodiment illustrated in fig. 17 be by multiple magnet arrangement on lens bracket 1714.Said, magnet 1736a, 1736b, 1736c (at magnet 1736b behind) and 1736d (at magnet 1736a behind) are placed directly on lens bracket 1714.Magnet 1736a-1736d can include the part of opposed polarity and/or parts and/or separate sub-magnet.An embodiment, a part for magnet can be more than or less than another part of magnet.Such as, magnet 1736a comprises Part I i.e. magnet 1736a1, and it is more than Part II i.e. magnet 1736a2.Before about as described in other embodiments, based in part on size and/or the layout of coil, it may be determined that the size between each magnet.Such as, if it is desire to magnet can be with the magnetic field interaction produced by one or more coils, so size and/or arrangement of this magnet just can carry out according to the magnetic field of the size of the one or more coil and/or arrangement and generation and arrange, so as to lens bracket (such as lens bracket 1714) also can be made to produce near magnetic field mobile.
An embodiment, coil 1730 can be positioned in around magnet 1736a-1736d or be adjacent to such that it is able to makes lens bracket 1714 produce mobile, such as moves along the direction parallel with lens bracket 1714 optical axis.In another embodiment, first coil group 1732 and the second coil groups 1734 can also be positioned near magnet 1736a-1736d, rotate so that lens bracket can produce about one or more axles being perpendicular to lens bracket 1714 optical axis.
Figure 18 shows an embodiment being similar to Figure 17, and wherein first coil 1830, first coil group 1832 (comprising coil 1832a and 1832b) and the second coil groups 1834 (comprising coil 1834a and 1834b) are positioned near magnet 1836a, 1836b, 1836c (being covered by lens bracket 1814) and 1836d (being covered by lens bracket 1814).Said, in an embodiment, a part of first coil 1830 is through the hollow space of the first and second coil groups 1832 and 1834.Such as, dispose first coil 1830 to make a part of first coil 1830 can be exposed to magnet 1836a1 through the opening of first coil 1832a of first coil group 1832, thus produce a magnetic field in first coil 1830 and interact with magnet 1836a1.
An embodiment, first coil 1830, first coil group 1832 and the second coil groups 1834 can be disposed to make it coplanar.Such as, plane A of Figure 18 shows a plane being perpendicular to lens bracket 1814 optical axis (such as z-axis).As shown in the dotted line intersected with first coil 1830, a plane (such as plane A) being perpendicular to optical axis, it intersects with first coil 1830, also will intersect with at least some of first and second coil groups 1832 and 1834.Thus as it has been described above, at the present embodiment, first coil 1830, first coil group 1832 and the second coil groups 1834 are coplanar.
In an embodiment, if magnet 1836a-1836d can be positioned on lens bracket 1814, then in first coil 1830, first coil group 1832 and the second coil groups 1834 are then positioned in yoke (such as the yoke 1524 of Figure 15 A) and/or other is adapted to hold first coil 1830, first coil group 1832 and the second coil groups 1834 in the structure of magnet 1836a-1836d.
In an embodiment, apply one or more current impulse at least one coil in first coil 1830, first coil group 1832 or the second coil groups 1834, lens bracket 1814 can be made to produce the motion on one or more direction.Such as, send one or more current signal to first coil 1830, the one or more current signal be enough to produce a magnetic field, interacts with magnet 1836a1,1836b1,1836c1 and 1836d1, so that the lens bracket 1814 being attached with magnet 1836a-1836d moves.
In an embodiment, apply one or more current signal to one or more coils of first coil group 1832 or the second coil groups 1834, lens bracket 1814 can be made to produce rotary motion about one or more axles being perpendicular to lens bracket 1814 optical axis, be similar to the discussion in Figure 10 A, Figure 10 B and Figure 11.In another embodiment, apply one or more current signal at least first coil 1830, lens bracket 1814 can be made to be parallel to lens bracket 1814 optical axis and move, be similar to the discussion in Figure 10 A, Figure 10 B and Figure 11.
It will be recognized by those skilled in the art, for above description, there may be an an infinite number of change, these examples and appended accompanying drawing and be only used for describing one or more particular implementation.They should not be construed as restrictive.
As used herein " with ", "and/or" and "or" can comprise various connotation, be at least partially dependent on the context that these terms use equally.Generally, during use, if "or" and "and/or" are associated with a list, such as A, B or C, it can be to comprise connotation, refers to A, B and C, it is also possible to be exclusive connotation, is A, B or C.It addition, " one or more " as used herein can be used to describe any feature, structure or the characteristic of odd number, or can be used to some combinations of Expressive Features, structure or characteristic.However, it should be noted that this is only one and describes example, and this utility model is not limited to this example.
It is counted as example embodiment of the present utility model although having been described above and describing, it will be apparent to those skilled in the art that and it can be variously modified and replace, without departing from spirit of the present utility model.Furthermore it is possible to make many amendment particular case to be fitted to religious doctrine of the present utility model, without departing from this utility model central concept described here.So, this utility model is not only restricted to specific embodiment disclosed here, but this utility model also includes all embodiments and the equivalent thereof that belong to this utility model scope.

Claims (13)

1. a small-sized image-forming module, it is characterised in that including:
One lens bracket；With
One electromagnetic actuators, it is connected to described lens bracket, and described electromagnetic actuators includes:
First coil, its optical axis that lens bracket can be made to be parallel to lens bracket moves；
At least two coil groups, it can make lens bracket rotate about an axle being perpendicular to optical axis, and a part for wherein said first coil is placed so that the hollow space through described at least two coil groups；With
Multiple magnets, it is placed near described first coil and described at least two coil groups, the most each magnet includes Part I and Part II, described Part II is different from the described Part II polarity towards described lens bracket adjacent to described Part I, described Part I towards the polarity of described lens bracket；
Wherein said first coil is adjacent to the Part I of the plurality of magnet, described at least two coil groups is placed, make the Part I Part I adjacent to the plurality of magnet of described at least two coil groups, and the Part II of described at least two coil groups is adjacent to the Part II of the plurality of magnet, so that described at least two coil groups can be with the magnetic field interaction of the first and second parts of the plurality of magnet, lens bracket is made to produce rotary motion, wherein said first coil is through the opening the described Part I and described Part II of described at least two coil groups.
Small-sized image-forming module the most according to claim 1, it is characterised in that the size of the Part I of described magnet is more than the size of the Part II of described magnet.
Small-sized image-forming module the most according to claim 1, it is characterized in that, when one of them coil of described at least two coil groups runs, described lens bracket is made to rotate about the first axle being perpendicular to optical axis, when another coil of described at least two coil groups runs, described lens bracket is made to rotate about the second axle being perpendicular to optical axis.
Small-sized image-forming module the most according to claim 3, it is characterised in that described first axle is perpendicular to described second axle.
Small-sized image-forming module the most according to claim 1, it is characterized in that, described first coil and described at least two coil groups are all connected to described lens bracket, described at least two coil groups includes four coils, at least two of which coil is positioned in the complimentary positions of described lens bracket, make described lens bracket produce about an axle being perpendicular to optical axis to rotate, and wherein said four coils are near the Part I of the plurality of magnet and Part II.
Small-sized image-forming module the most according to claim 1, it is characterised in that also include:
One yoke, it is connected to base, and wherein said lens bracket is positioned in described yoke and described base；
First spring, it is placed between described lens bracket and described yoke；With
Second spring, it is placed between described lens bracket and described base.
Small-sized image-forming module the most according to claim 6, it is characterised in that described electromagnetic actuators is positioned between described first spring and described second spring.
8. a lens moving apparatus, it is characterised in that including:
One lens bracket；
One electromagnetic actuators, including:
First group of magnet and second group of magnet；
First coil, it is placed near stating lens bracket, and the one or more magnets in neighbouring described first group of magnet；
First coil group, it is placed the one or more magnets in the reciprocal side near described lens bracket, and neighbouring described first group of magnet and the one or more magnets in described second group of magnet；
Second coil groups, it is placed the one or more magnets in the reciprocal side near described lens bracket, and neighbouring described first group of magnet and the one or more magnets in described second group of magnet；
Wherein said first coil and described first and second coil groups are placed so that the plane being perpendicular to described lens bracket optical axis intersects with described first coil and described first and second coils；
Described electromagnetic actuators can make described lens bracket be parallel to optical axis and move, or makes described lens bracket produce rotary motion about one or more axles being perpendicular to optical axis；
Wherein said first coil passes described first coil group and the opening of described second coil groups.
Lens moving apparatus the most according to claim 8, it is characterised in that the central opening of at least some of at least one coil through described first and second coil groups of described first coil.
Lens moving apparatus the most according to claim 9, it is characterised in that the described of described first coil is offset between coil axle center at least partially in the central opening of at least one coil of described first and second coil groups.
11. lens moving apparatus according to claim 8, it is characterized in that, in described first group of magnet, polarity towards a part for the one or more magnet of described lens bracket is different from described second group of magnet the polarity of a part for the one or more magnet towards described lens bracket.
12. lens moving apparatus according to claim 8, it is characterized in that, the one or more magnet in described first group of magnet and the one or more magnet in described second group of magnet are placed and extend to above and below described first coil and described first and second coil groups.
13. lens moving apparatus according to claim 8, it is characterized in that, also include a yoke, wherein said lens bracket is positioned in described yoke, and the one or more magnet in described first group of magnet and the one or more magnet in described second group of magnet are connected the inner surface of described yoke.
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108027494A (en) * 2015-09-17 2018-05-11 三星电子株式会社 Camera model including more camera lenses and the electronic equipment with the camera model
JP2018128589A (en) * 2017-02-09 2018-08-16 Tdk株式会社 Lens driving device and electromagnetic driving unit
CN108427166A (en) * 2017-02-15 2018-08-21 三星电子株式会社 Camera model and double camera module
CN109633850A (en) * 2017-10-09 2019-04-16 新思考电机有限公司 Lens driver, photographic means and electronic equipment
CN111758059A (en) * 2018-02-23 2020-10-09 Lg伊诺特有限公司 Lens module and camera module including the same
EP4102820A4 (en) * 2020-02-06 2023-11-22 LG Innotek Co., Ltd. Camera device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108027494A (en) * 2015-09-17 2018-05-11 三星电子株式会社 Camera model including more camera lenses and the electronic equipment with the camera model
CN108027494B (en) * 2015-09-17 2020-11-17 三星电子株式会社 Camera module including multiple lenses and electronic device having the same
JP2018128589A (en) * 2017-02-09 2018-08-16 Tdk株式会社 Lens driving device and electromagnetic driving unit
CN108427166A (en) * 2017-02-15 2018-08-21 三星电子株式会社 Camera model and double camera module
CN109633850A (en) * 2017-10-09 2019-04-16 新思考电机有限公司 Lens driver, photographic means and electronic equipment
CN111758059A (en) * 2018-02-23 2020-10-09 Lg伊诺特有限公司 Lens module and camera module including the same
US11953703B2 (en) 2018-02-23 2024-04-09 Lg Innotek Co., Ltd. Lens module and camera module including the same
EP4102820A4 (en) * 2020-02-06 2023-11-22 LG Innotek Co., Ltd. Camera device

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