CN109901347A - Optical module, camera module and the smart machine with camera module - Google Patents
Optical module, camera module and the smart machine with camera module Download PDFInfo
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- CN109901347A CN109901347A CN201711299061.2A CN201711299061A CN109901347A CN 109901347 A CN109901347 A CN 109901347A CN 201711299061 A CN201711299061 A CN 201711299061A CN 109901347 A CN109901347 A CN 109901347A
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Abstract
This application discloses a kind of optical module, the camera module with the optical module and with the smart machine of the camera module.Optical module according to one embodiment includes: lens module, has outer framework；Fixed device, is arranged in one group of diagonal zones of lens module；And SMA wire, it is set as forming four sides facing each other around the outer framework of lens module, wherein on each side, SMA wire includes the first SMA wire and the second SMA wire, and the first SMA wire and the second SMA wire are arranged to intersected with each other but do not contact.
Description
Technical field
This application involves optical module, the camera module with optical module and with the smart machine of camera module.
Background technique
Camera module on existing smart machine is essentially all to drive camera lens longitudinal movement come real by motor mechanism
Existing auto-focusing, but motor carrier, which drives camera lens to carry out longitudinal movement, needs certain movement travel, therefore in smart machine
It is middle to need to reserve reserved space for the longitudinal movement of camera lens.By taking smart phone as an example, as smart phone becomes thin, in mobile phone
The smaller and smaller using space of camera module can be left for, and motor carrier needs magnetite driving coil to generate certain thrust
Camera lens can be driven to realize longitudinal movement, wherein magnetite occupies biggish volume inside motor, and in order to which thrust can
Reach certain value, the volume of magnetite is difficult to reduce again, and therefore, it is necessary to improve motor knot under the premise of not reducing magnetite volume
Structure reduces the volume of motor, and then reduces the volume of mobile phone camera module.
Marmem, Shape Memory Alloys, abbreviation SMA.SMA wire can be eliminated after capable of heating up compared with
The deformation occurred under low temperature, the original-shape before restoring its deformation, thus can replace motor that camera lens is driven to carry out by SMA wire
Movement.SMA wire has smaller volume for traditional motor, can be effectively reduced the overall dimensions of mould group, is conducive to
The miniaturization of mould group.
Summary of the invention
The application is directed to a kind of camera module and the smart machine with the camera module, is desired to have lesser body
Product simultaneously can realize auto-focusing and optical anti-vibration under the driving of SMA wire.
According to the one aspect of the application, a kind of a kind of 1. optical modules are provided characterized by comprising camera lens mould
Block has outer framework；Fixed device, is arranged in one group of diagonal zones of lens module；And SMA wire, around lens module
Outer framework is set as forming four sides facing each other, wherein on each side, SMA wire includes the first SMA wire and
Two SMA wires, the first SMA wire and the second SMA wire are arranged to intersected with each other but do not contact.
In one embodiment, optical module further include: the lower section of lens module is arranged in pedestal, pedestal, for branch
Support lens module, and fixed device.
In one embodiment, on each side, the first SMA wire and the second SMA wire all have fixing end and activity
End, on the securing means, movable end supports another group of diagonal zones of lens module to fixing end, living when deformation occurs for SMA wire
Moved end drives lens module mobile relative to fixed device.
In one embodiment, at least one of the first SMA wire and the second SMA wire are to fold, to have two
Two fixing ends of at least one of a fixing end and a movable end, the first SMA wire and the second SMA wire are set relative to pedestal
It sets in fixed and adjacent position.
In one embodiment, the movable end of at least one of the first SMA wire and second SMA wire is supported in camera shooting
On the outer framework of mould group.
In one embodiment, at least one of the first SMA wire and the second SMA wire are folded into two SMA wire sections,
Two SMA wire sections are parallel to each other and length having the same.
In one embodiment, the SMA wire in the adjacent side of outer framework is symmetrically arranged.
In one embodiment, on each side of outer framework, the first SMA wire and the second SMA wire are arranged to that
This length symmetrical and having the same.
In one embodiment, on each side of outer framework, the movable end of the first SMA wire and the second SMA wire with
Each side is at a distance of different distances.
In one embodiment, on each side of outer framework, the fixing end of the first SMA wire and the second SMA wire with
Each side is at a distance of different distances.
In one embodiment, lens module all has the first supporting part and second on each side of outer framework
Bearing portion, the first supporting part and the second supporting part support the first SMA wire and the second SMA wire respectively.
In one embodiment, at least the first supporting part in the first supporting part and the second supporting part is winding section, the
One SMA wire is wrapped on winding section.
In one embodiment, winding section perpendicular to lens module optical axis be arranged, and have be parallel to optical axis around
Cable architecture is wrapped on winding structure so that the first SMA wire is parallel to optical axis.
In one embodiment, winding section is parallel to the optical axis setting of lens module, and have perpendicular to optical axis around
Cable architecture, so that the first SMA wire is wrapped on winding structure perpendicular to optical axis.
In one embodiment, winding section has the winding structure of T shape or work shape, and the first SMA wire is wrapped in winding section
T shape or work shape winding structure on.
In one embodiment, at least the first supporting part in the first supporting part and the second supporting part is that movable end is fixed
Portion, the first SMA wire are fixed on movable end fixed part.
In one embodiment, the first SMA wire includes the SMA wire section of two-phase seperation, and the inside of movable end fixed part is also
Including conducting element, conducting element is arranged between the SMA wire section of two-phase seperation.
According to the another aspect of the application, a kind of camera module is provided, including light described in any of the above embodiment
Learn component.
According to the another aspect of the application, a kind of smart machine is provided, including taking the photograph described in any of the above embodiment
As mould group.
According to optical module provided by the present application, camera module and smart machine, there is lesser volume, and can be easily
Realize auto-focusing and optical anti-vibration.
Detailed description of the invention
Exemplary embodiment is shown in reference attached drawing.Embodiment and attached drawing disclosed herein should be considered illustrative
, and not restrictive.
Figure 1A shows the solid according to the optical module of one illustrative embodiments of the application when providing SMA wire
Figure；
Figure 1B shows optical module the standing when providing SMA wire according to another illustrative embodiments of the application
Body figure；
Fig. 2 is the partial enlarged view of the fixation device in embodiment shown in figure 1A；
Fig. 3 A shows the schematic diagram of the winding section in embodiment shown in figure 1A；
Fig. 3 B shows the schematic diagram of the winding section in embodiment shown in Figure 1B；
Fig. 4 A shows the schematic diagram of the coiling shape according to one illustrative embodiments of the application；
Fig. 4 B shows the schematic diagram of the coiling shape according to the application another illustrative embodiments；
Fig. 5 shows the vertical view according to the optical module of one illustrative embodiments of the application when providing SMA wire
Figure；
Fig. 6 A shows optical module the standing when providing SMA wire according to another illustrative embodiments of the application
Body figure；
Fig. 6 B shows the partial enlarged view of the movable end fixing piece in embodiment shown in Fig. 6 A；
Fig. 6 C shows the schematic diagram of internal structure of the movable end fixing piece in embodiment shown in Fig. 6 A；
Fig. 7 shows optical module the standing when providing SMA wire according to another illustrative embodiments of the application
Body figure；
Fig. 8 shows optical module the standing when providing SMA wire according to another illustrative embodiments of the application
Body figure；
Fig. 9 A shows optical module the standing when providing SMA wire according to another illustrative embodiments of the application
Body figure；
Fig. 9 B shows the embodiment according to shown in 9A in the side view of a side；
Figure 10 schematically shows the perspective according to the optical module of the application embodiment when being wound with SMA wire
Figure.
Specific embodiment
Various aspects of the reference attached drawing to the application are made more detailed description by the application in order to better understand.It answers
Understand, the only description to the illustrative embodiments of the application is described in detail in these, rather than limits the application in any way
Range.In the specification, the identical element of identical reference numbers.Stating "and/or" includes associated institute
Any and all combinations of one or more of list of items.
It should be noted that in the present specification, the first, second equal statement is only used for a feature and another feature differentiation
It comes, without indicating any restrictions to feature.Therefore, discussed below without departing substantially from teachings of the present application
First main body is also known as the second main body.
In the accompanying drawings, for ease of description, thickness, the size and shape of object are slightly exaggerated.Attached drawing is merely illustrative
And it is and non-critical drawn to scale.
It will also be appreciated that term " comprising ", " including ", " having ", "comprising" and/or " including ", when in this theory
In bright book use when indicate exist stated feature, entirety, step, operations, elements, and/or components, but do not exclude the presence of or
It is attached with one or more of the other feature, entirety, step, operation, component, assembly unit and/or their combination.In addition, ought be such as
When the statement of at least one of " ... " appears in after the list of listed feature, entire listed feature is modified, rather than is modified
Individual component in list.In addition, when describing presently filed embodiment, use " can with " indicate " one of the application or
Multiple embodiments ".Also, term " illustrative " is intended to refer to example or illustration.
As it is used in the present context, term " substantially ", " about " and similar term are used as the approximate term of table, and
Be not used as the term of table degree, and be intended to illustrate by by those skilled in the art will appreciate that, measured value or calculated value
In inherent variability.
Unless otherwise defined, otherwise all terms (including technical terms and scientific words) used herein all have with
The application one skilled in the art's is generally understood identical meaning.It will also be appreciated that term (such as in everyday words
Term defined in allusion quotation) it should be interpreted as having and their consistent meanings of meaning in the context of the relevant technologies, and
It will not be explained with idealization or excessively formal sense, unless clear herein so limit.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Figure 1A shows the solid according to the optical module of one illustrative embodiments of the application when providing SMA wire
Figure.
It as shown in Figure 1A, include lens module 10, pedestal according to the optical module of one illustrative embodiments of the application
20 and fixed device 30.Before optical module is mounted to smart machine, also SMA wire 40 is installed on optical module.
Lens module 10 includes the outer framework 12 of the rectangle of camera lens 11 and encirclement camera lens 11.The outer framework 12 of rectangle has four
A side.In perspective view shown in figure 1A, it can be seen that the structure setting of two sides of outer framework 12.It should be appreciated that
In Figure 1A on other two side of unshowned outer framework 12, it may have similar structure setting.
It include two winding sections on each side of outer framework 12, that is, the first winding section 13 and the second winding section 14, often
The first winding section 13 and the second winding section 14 of a side are respectively positioned on one group of diagonal zones 12A of outer framework 12.First winding section
13 and second winding section 14 may be integrally formed on the outer framework 12 of lens module 10.
The lower section of lens module 10 is arranged in pedestal 20, is used to support lens module 10.Lens module 10 is on pedestal 20
Substantially centrally it is arranged.When being driven, lens module 10 can the optical axis under the support of pedestal 20 along camera lens 11 move, with
And it is moved in the plane perpendicular to optical axis.Hereinafter, by combine the application optical module structure it is driven and
Movement under driving is described in detail.
Another group of diagonal zones 12B of the outer framework 12 of lens module 10 is arranged in fixed device 30.Fixed device 30 is solid
It is scheduled on pedestal 20.As shown, fixed device 30 has stationary plane corresponding with each side of outer framework 12 respectively, also
It is that fixed device 30 has four stationary planes corresponding with four sides of outer framework 12.At each diagonal zones 12B
There are two stationary planes for tool.Although showing two stationary planes at each diagonal zones 12B in figure is integrally formed into L shape,
But optionally, two stationary planes at each diagonal zones 12B are also possible to completely separated or partially separated.
On stationary plane corresponding with each side of outer framework 12 respectively, fixed device 30 includes the first power supply fixing end
31, ground wire fixing end 32 and second source fixing end 33.The setting of first power supply fixed part 311 corresponding with the first winding section 13 exists
In first power supply fixing end 31, second source fixed part 331 corresponding with the second winding section 14 is arranged in second source fixing end
On 33.And the corresponding first ground wire fixed part 321 in the first winding section 13 and second ground wire corresponding with the second winding section 14 are fixed
Portion 322 is arranged in ground wire fixing end 32.Including the first power supply fixing end 31, ground wire fixing end 22, second source fixing end
33 fixation device 30 is fixed on pedestal 20, and the first power supply fixing end 31, ground wire fixing end 22 and second source fixing end
Each of 33 with pedestal 20 have be electrically connected.First power supply fixing end 31, ground wire fixing end 32 and second source fixing end 33
It separates, is electrically isolated to be formed each other, and 33 quilt of the first power supply fixing end 31 and second source fixing end each other
It powers respectively.Above-mentioned power supply fixed part and ground wire fixed part can be power supply fixing end and fixed point in ground wire fixing end or
Person is the fixing element in fixed point.
It will be appreciated that though showing first ground wire fixed part 321 corresponding with the first winding section 13 in Figure 1A and with
The corresponding second ground wire fixed part 322 in two winding section 14 is all disposed in identical ground wire fixing end 32, but the two can also divide
It is not arranged in different ground wire fixing ends.
Fig. 2 is the partial enlarged view of the fixation device 30 in embodiment shown in figure 1A, which corresponds to
One stationary plane of fixed device 30.From fig. 2 it can be seen that ground wire fixing end 32 is located at the first power supply fixing end 31 and second
Between power supply fixing end 33, thus first ground wire fixed part 321 corresponding with the first winding section 13 and right with the second winding section 14
The the second ground wire fixed part 322 answered can be arranged in sharedly in same ground wire fixing end 32.First power supply fixing end 31, ground wire are solid
Fixed end 32 and second source fixing end 33 are separated by a certain distance, to ensure mutual electric isolution.As described above, solid
Determining device 30 may also comprise two ground wire fixing ends, and first ground wire corresponding with the first winding section 13 is respectively set on it and fixes
Portion 321 and second ground wire fixed part 322 corresponding with the second winding section 14.It should be appreciated that power supply fixing end and ground wire fixing end
It may also be distinct from that the other modes setting of diagram and provide.
Figure 1A and Fig. 2 also shows the SMA wire 40 that the outside of lens module 10 and fixed device 30 is arranged in.What is shown
In embodiment, there are two fixing end and a movable ends for the every tool of SMA wire 40.Two fixing ends of every SMA wire 40 (are located at
Two ends) it is individually fixed in one group of power supply fixed part and ground wire fixed part, a movable end (being located at middle part) is wound around pair
It should be on the winding section of this group of power supply fixed part and ground wire fixed part.
First winding section 13, the first power supply fixed part 311 and the first ground wire fixed part 321 are provided so that: both ends point
It is not fixed on the first power supply fixed part 311 and the first ground wire fixed part 321, movable end is wound around SMA on the first winding section 13
Two line segments that line 40 is formed after coiling are substantially parallel.Having on first winding section 13 will be substantially parallel with two respectively
The position of SMA wire section contact, is referred to as the first winding position and the second winding position.It is, on the first winding section 13
On the first line and the first winding section 13 between fixation position on first winding position and the first power supply fixed part 311
The second line between fixation position on two winding positions and the first ground wire fixed part 321 is parallel to each other.Second winding section 14,
Second source fixed part 331 and the second ground wire fixed part 322 are provided so that: both ends are individually fixed in second source fixed part
331 and formed after coiling two of the SMA wire 40 that is wound around on the second winding section 14 of the second ground wire fixed part 322, movable end
Line segment is substantially parallel；It is, the third winding position on the second winding section 14 and the fixed bit on second source fixed part 331
The fixation position on the 4th winding position and the second ground wire fixed part 322 on third line and the second winding section 14 between setting
Between the second line be parallel to each other.Above-mentioned winding section and fixed part are also configured to so that the first line being parallel to each other and
Two lines intersect but do not contact each other with the third line and the 4th line being parallel to each other, to fix and be wound around above-mentioned two groups
Two SMA wires of winding section and fixed part are formed as intersecting but not contact each other.
For example, on each side of outer framework 12, the first winding position and the second winding position of the first winding section 13
With it is identical or approximately uniform at a distance from the corresponding side surface of outer framework 12.The third winding position of second winding section 14 and the 4th around
Line position is also identical or approximately uniform at a distance from the corresponding side surface of outer framework 12.First winding position of the first winding section 13
With the second winding position at a distance from the corresponding side surface of outer framework 12 with the third winding position and the 4th of the second winding section 14
Winding position is different at a distance from the corresponding side surface of outer framework 12.
In another example on each stationary plane of fixed device 30, fixation position on the first power supply fixed part 311 and described
Fixation position on first ground wire fixed part 321 is separated by a distance identical or approximately uniform as the stationary plane.Second source is fixed
The fixation position on fixation position and the second ground wire fixed part 322 in portion 331 is separated by a distance identical or close as the stationary plane
Patibhaga-nimitta is same.The fixation position on fixation position and the first ground wire fixed part 321 on first power supply fixed part 311 is solid with this
Determine the fixation position on the fixation position and the second ground wire fixed part 322 separated by a distance on second source fixed part 331 of face
With stationary plane difference separated by a distance.
It installs to be set to by above-mentioned winding position and/or fixed bit and be separated by a distance from different with side or stationary plane, so that
It is fixed and be wound around two groups of winding sections and two SMA wires of fixed part are formed as intersecting but not contact each other.In fixed and winding
In the case where two SMA wires of two groups of winding sections and fixed part are formed as intersecting but not contacting each other, in different SMA wire quilts
In the case where electric drive, camera lens 11 can be realized and be moved along optical axis, and be moved in the plane perpendicular to optical axis.
In the embodiment shown in Figure 1A, the first winding section 13 and the second winding section 14 are set perpendicular to the optical axis of lens 11
It sets, and there is the winding structure for being parallel to optical axis.Optionally, winding section itself can also be not orthogonal to optical axis, but after coiling
First line and the second line, which are formed by plane, will be parallel to optical axis, i.e., the first winding structure 131 and second described hereinafter
141 center of winding structure is perpendicular to optical axis.
It will be appreciated that though the outer framework 12 being shown in the accompanying drawings is rectangle, but outer framework be also possible to rectangle with
Outer any other suitable shape, as long as the position and structure of winding section and fixed part are provided so that SMA wire can be formed
For in quadrangle (preferably, being in rectangle) winding, the four edges of quadrangle correspond respectively to side of the outer framework on four direction
Face, and thus, it is possible to drive lens module to move according to mode described below.For example, outer framework is also possible to arc
Shape, winder is arranged in arc-shaped outer surface, and winder can be fixed with the power supply fixing end and ground wire for being set to fixed device
End forms quadrangle, preferably rectangle；For another example fixed device can be circular arc type, in the outer surface of circular arc, setting power supply is fixed
End and ground wire fixing end, the shape and size corresponding change of power supply fixing end and ground wire fixing end, so as to total with winder
With the quadrangle form for forming similar rectangle.
In fact, the outer framework of lens module can have four sides divided according to angular range, on each side
Winding section and corresponding fixed part are configured to form above-mentioned quadrangle.It answers four sides that angularly range divides
When being interpreted as, point (center of circle) divides four quadrants centered on the center of outer framework, and the angular range of each quadrant is corresponding
In a side.For example, four sides thus divided correspond to the four edges of rectangle for the outer framework of rectangle；For circle
The outer framework of shape, four sides thus divided correspond to four sections of quarter circular arcs.That is, the outer framework of lens module
It can be arbitrary shape, as long as according to corresponding solid on the winding section being arranged on each side of angular divisions and fixed device
Determine portion and cooperatively forms required quadrilateral structure.
It will also be understood that the pedestal in above embodiment nor is it necessary that for the optical module of the application.
For example, the bottom of fixed device can laterally extend a support portion to replace pedestal.
Fig. 3 A shows the schematic diagram of the winding section in embodiment shown in figure 1A.As shown in Figure 3A, the first winding section
13 and second winding section 14 extended vertically from the side of outer framework 12, therefore perpendicular to the optical axis of lens 11.In the first winding section
13 and second on winding section 14, are respectively set the first winding structure 131 and the second winding structure 141 for being parallel to optical axis.Example
Such as, the first winding structure 131 and the second winding structure 141 are separately positioned on the first winding section 13 and the second winding section 14
Groove structure is wound with for SMA wire.As shown, the first winding structure 131 and the second winding structure 141 are separately positioned on
With the side place separated by different distances of outer framework 12, the fixed part on fixed device 30 is arranged identical away from stationary plane as a result,
Apart from when, fixed as described above and winding two SMA wires 40 intersect without contacting.First winding section 13 shown in Fig. 3 A
There is roughly the same length with the second winding section 14, and the first winding structure 131 and the second winding structure 141 are respectively formed at
Head away from the first winding section 13 and the second winding section 14 or at the different location of distal portion.It should be appreciated that the structure of winding section
It is without being limited thereto, for example, the first winding section 13 and the second winding section 14 with different length, the first winding structure 131 can be used
The head away from the first winding section and the second winding section or the same position of distal portion are respectively formed at the second winding structure 141
Place, as long as the first winding structure and the second winding structure are respectively formed at the side of outer framework 12 place separated by different distances i.e.
It can.In various embodiments, the first winding structure 131 and the second winding structure 141 also may be formed at and outer framework 12
Side is separated by same distance, and the correspondence fixed part fixed on device be formed in it is separated by different distances with corresponding stationary plane.
Figure 1B shows optical module the standing when providing SMA wire according to another illustrative embodiments of the application
Body figure.Compared with embodiment shown in figure 1A, the main distinction of embodiment shown in Figure 1B is the structure of winding section.Figure
The first winding section 15 and the second winding section 16 in 1B, which have, is similar to L-shaped structure, the body parallel with winding structure in
The optical axis of lens 11 is arranged, and has the winding structure 151 and 161 perpendicular to the optical axis.
In the above-described embodiment, for the ease of installation SMA wire, the height of power supply fixing end and corresponding ground wire fixing end
May be configured as it is different from each other, that is, the fixation position on fixation position and the first ground wire fixed part on the first power supply fixed part
The distance of corresponding side surface apart from outer framework is different, on the fixation position and the second ground wire fixed part on second source fixed part
The distance of the corresponding side surface of fixed positional distance outer framework is different.At this point it is possible to be the whole of power supply fixing end and ground wire fixing end
Body height is different, and the fixed bit being also possible in power supply fixing end and ground wire fixing end installs at different height.
It should be appreciated that winding section itself shape and structure can also not perpendicular or parallel to optical axis, as long as thereon around
Cable architecture is as described in the embodiments above parallel or perpendicular to optical axis.It further, can also be according to actual needs by coiling
Structure setting is to have angle between optical axis, by the presence of angle, so that SMA has higher consistency when shrinking.
Fig. 3 B shows the schematic diagram of the winding section in embodiment shown in Figure 1B.As shown in Figure 3B, the first winding section
15 and second winding section 16 body parallel in the optical axis of lens 11, and the first winding section 15 and the second winding section 16 have from
Its main body extends to the connection structure of the side of outer framework 12.Optionally, be parallel to optical axis the first winding section 15 and second around
Line portion 16 can be connected to the side of outer framework 12 by additional connector.On the side of outer framework 12, it is respectively arranged with vertical
Directly in the first winding structure 151 of optical axis and the second winding structure 161.As shown, the first winding structure 151 and the second coiling
Structure 161 be separately positioned on the side of outer framework 12 place separated by different distances, the fixed part on fixed device 30 is set as a result,
It sets when away from stationary plane same distance, fixed and winding two SMA wires 40 intersect without contacting as described above.Different
In embodiment, the first winding structure and the second winding structure also may be formed at and be separated by same distance with the side of outer framework 12
Place, and the correspondence fixed part fixed on device be formed in it is separated by different distances with corresponding stationary plane.
Winding structure shown in Fig. 3 A and 3B is I-shaped, that is, both ends are wider, interphase has centainly both ends
The structure for the distance that is recessed.The recess portion that recess distance is constituted limits SMA wire and generates the not phase in driving period for accommodating SMA wire
The movement of prestige.Optionally, the winding structure that T-type can also be used, prevents SMA wire from falling off in driving period.Further, also
One can be increased on winding structure prevents SMA wire de- from winder for limiting the position of SMA wire similar to the structure of mushroom head
It falls, such structure, which is also possible to be similar into screw hole, twists screw, or positioning pin is inserted into location hole.It is screwed to last spiral shell
There can be an annular gap between hole and screw, annular gap is for installing SMA wire.Since the head of screw is bigger, thus
Enhance the limit effect to SMA wire.
Fig. 4 A and 4B show two kinds of coiling shapes according to the application illustrative embodiments.Specifically, Fig. 4 A is shown
Schematic diagram of the SMA wire 40 with U-shaped structure winding, Fig. 4 B show SMA wire with the schematic diagram of O/ α shape structure winding.
In the embodiment as shown, every SMA wire is formed as the double-deck cable architecture of U-shaped or O/ α shape after coiling, relatively
For existing single line structure, the double-deck cable architecture have better structural strength, higher stability, smaller posture difference with
And higher focusing precision etc..The structural strength of SMA wire is enhanced by the double-deck cable architecture, additionally it is possible to keep SMA wire carrying heavier
Camera lens, such as glass lens, or compared to present camera lens, the camera lens with more eyeglasses further increases entire mould group
Quality.
Fig. 5 shows the vertical view according to the optical module of one illustrative embodiments of the application when providing SMA wire
Figure.Next, the mobile progress in conjunction with Fig. 5 to the optical module according to the application under the drive of SMA wire in all directions
Description.
As shown in figure 5, being each provided with SMA wire in each side according to the optical module of the application.Although not showing in Fig. 5
Out, but it should be appreciated that according to description above and all have two SMA for intersecting but not contacting each other in each side
Line, rather than an only SMA wire.The winding section 13,14 for being set to the diagonal zones 12A of outer framework 12 is shown in Fig. 5, and
It is set to the fixation device 30 of diagonal zones 12B.Although the winding section shown in Fig. 5 is parallel to optical axis, it should be understood that winding section
It can be perpendicular to optical axis.For ease of description, four sides of the outer framework of optical module are widdershins compiled respectively as shown in Figure 5
Number be first side 1, second side 2, third side 3 and the 4th side 4.Meanwhile as shown in figure 5, it will be perpendicular to the flat of optical axis
Face right-angle coordinate representation shows x and y-axis in Fig. 5.Based on coordinate system shown in fig. 5, the side of x/y plane can be will be perpendicular to
It is the direction z+ perpendicular to the plane upwardly direction to z-axis is considered as, is the direction z- perpendicular to the plane downwardly direction.
As shown in figure 5, four sides are divided into two groups, two opposite sides are one group.Specifically, 1 He of first side
Third side 3 is one group, for controlling camera lens 11 in the movement in the direction x.Second side 2 and the 4th side 4 are one group, for controlling
Movement of the camera lens 11 processed in the direction y.
As described above, fixed device 30 is fixed on pedestal 20 in the camera module of the application, and therefore, fixed device 30
And the holding position in the motion process of camera lens 11 of fixed part thereon is constant.When needing to drive camera lens mobile to the direction x+,
Electric current is applied to two SMA wires of third side, the SMA wire of third side increases the temperature of predetermined amount after powered up, thus receives
The length of contracting predetermined amount.Because fixed device 30 is fixed at the both ends of SMA wire, the position at the both ends of SMA wire is to maintain not
Become.In two SMA wire Length Contractions, it is wound around the movable end of winding section and power to the direction x+ is applied to winding section jointly,
Make camera lens 11 to the mobile scheduled distance in the direction x+.SMA wire in third side applies the power to the direction x+ and drives camera lens to x
In the case that+direction is mobile, the SMA wire of first side is with lens module moving and be stretched to the direction x+.When camera lens mould
After block reaches desired location and keeps stable state, cool down to the SMA wire of third side, to make lens module steadily
It is maintained at desired location and realizes corresponding focusing or zoom function.
Similarly, when needing to drive lens module mobile to the direction x-, electric current is applied to the SMA wire of first side, is made
The SMA wire of first side shrinks and drives camera lens mobile to the direction x-.At this point, the SMA wire of third side with lens module to
It moves and is stretched in the direction x-.
When needing to drive camera lens mobile to the direction y+, electric current is applied to two SMA wires of the 4th side, the 4th side
SMA wire increases the temperature of predetermined amount after powered up, thus shrinks the length of predetermined amount.Because fixation is fixed at the both ends of SMA wire
Device 30, thus the position at the both ends of SMA wire be to maintain it is constant.In two SMA wire Length Contractions, it is wound around winding section
Movable end applies the power to the direction y+ to winding section jointly, makes camera lens 11 to the mobile scheduled distance in the direction y+.In the 4th side
SMA wire apply the power to the direction y+ and drive camera lens to the direction y+ it is mobile in the case where, the SMA wire of second side is with camera lens
Module is moved and is stretched to the direction y+.After lens module reaches desired location and keeps stable state, to the 4th side
SMA wire cool down, to make lens module be stably maintained at desired location and realize corresponding focusing or zoom function.
Similarly, when needing to drive lens module mobile to the direction y-, electric current is applied to the SMA wire of second side, is made
The SMA wire of second side shrinks and drives camera lens mobile to the direction y-.At this point, the SMA wire of the 4th side with lens module to
It moves and is stretched in the direction y-.
It will be appreciated that though be not shown in Fig. 5, the edge of lens module is supported on pedestal with fixed device at a distance of appropriate
Distance so that lens module can be in the mobile appropriately distance in the direction x and y, to realize that optics is anti-under the driving of SMA wire
The function of trembling.
In order to remain unchanged lens module when to the direction x and the mobile direction y in the axial position of optical axis, each side
Two SMA wires may be configured as it is substantially symmetric relative to the crossover location of the two, thus being applied roughly the same electric current
In the case of, the power applied to winding section is also roughly the same, and the axial component for the power that thus the two applies is substantially balanced out.
It is arranged to intersect two SMA wires of each side the foregoing describe winding section and fixed part but does not contact.?
That is a winding section setting corresponding to top fixed part and on the lower in two SMA wires of each side, Ling Yigen
Corresponding on the lower fixed part and the setting of top winding section, the cross reference of two SMA wires is consequently formed.
When needing that camera lens is driven to move on the direction z+, fixed part is top in two SMA wires of each side one
SMA wire is applied electric current.It is, four top SMA wires of fixed part are applied electric current altogether, the SMA wire heating of energization is simultaneously
Thus the length of predetermined amount is shunk.In four SMA wire Length Contractions, the movable end for being wound around winding section jointly applies winding section
Add the power to the direction z+, makes camera lens 11 to the mobile scheduled distance in the direction z+.When lens module reaches desired location and keeps steady
After determining state, cool down to the SMA wire of the 4th side, to make lens module be stably maintained at desired location and realize phase
The focusing answered or zoom function.
Similarly, when needing to drive lens module mobile to the direction z-, to fixed part in two SMA wires of each side
A SMA wire on the lower applies electric current, shrinks the SMA wire being powered and drives camera lens mobile to the direction z- jointly.It as a result, can be real
The automatic focusing function of existing camera lens.
In order to remain unchanged lens module when mobile to the direction z in the position in the direction x and the direction y, adjacent side
SMA wire may be configured as it is substantially symmetric relative to the boundary line of adjacent side, thus the case where being applied roughly the same electric current
Under, component of the power in the direction x and the direction y that winding section applies is substantially balanced out.
Fig. 6 A shows camera module the standing when providing SMA wire according to another illustrative embodiments of the application
Body figure.Difference with embodiment shown in figure 1A is, fixes on the outer framework 12 of lens module 10 provided with movable end
Portion replaces winding section.As shown in Figure 6A, on the outer framework of lens module 10, the first movable end fixed part 17 and are provided
The U-shaped structure of SMA wire is clamped and is fixed by two movable end fixed parts 18, thus can avoid SMA wire when camera lens is mobile with around
Line device generates friction.
Fig. 6 B shows the partial enlarged view of the movable end fixing piece in embodiment shown in Fig. 6 A；Fig. 6 C is shown
The schematic diagram of internal structure of movable end fixing piece in embodiment shown in Fig. 6 A.
Using movable end fixed part substitution winding section, two sections for being equivalent to the formation of U-shaped winding structure are parallel
Each of SMA wire section at least one point of SMA wire section near winding structure be fixed on movable end fixed part.This
In the case of, it is first solid to can be movable end fixed part for the first winding position and the second winding position of winding section described above
Positioning is set and the second fixed position.
At this point, being powered movement of the deformation occurred for camera lens due to being fixed on internal SMA wire by movable end fixed part
There is no direct or positive effect, therefore, optionally, SMA wire can be separate structure at U-shaped structure, that is, can remove SMA
Line is fixed on interior part by movable end fixed part.In fact, be equivalent to will be in the embodiment of Figure 1A to Fig. 4 for such structure
A SMA wire be divided into two SMA wires and provide, two SMA wires have one end to be connected to movable end fixed part, two SMA wires
The other end is connected to power supply fixed part corresponding with the movable end fixed part and ground wire fixed part.
In this case, be connected between two ends of movable end fixed part can be by common conduction for two SMA wires
Element realizes electrical connection, since the resistance of common conductive element is less than the resistance of SMA wire, thus, it is real by common conductive element
Now electrical connection can reduce the voltage that the SMA wire being fixed at the fixed original part of movable end is assigned to, and reduce electric energy loss, improve
Utilization rate of electrical.
It is the equal of the first SMA wire and the second SMA wire is both threads in the present embodiment, and the both ends of the first SMA wire point
It is not fixed in movable end and fixing end, the second SMA wire is also such.
In one embodiment, two SMA wires can be installed simultaneously, and reserve slightly larger length.It, can in movable end fixed part
The wire length of needs is intercepted according to actual needs.The position contacted inside movable end fixed part with SMA wire, which can be, is capable of conduction
Metal structure, to make the line being clipped in inside movable end fixed part that can directly be short-circuited, electric current is directly from movable end fixed part stream
Dynamic, to realize the electrical connection between two SMA wires, forming circuit enables SMA wire to work normally.
By U-shaped structure by the way that it is solid to be fixed on same movable end in the fixed scheme of movable end fixed part shown in Fig. 6 A
Determine two SMA wires can be enabled more preferable each other only at a distance of the distance of about line footpath between two SMA wires in portion
Ground moves synchronously.Optionally, be fixed between two SMA wires of same movable end fixed part can also it is apart it is bigger away from
From avoiding mutual friction so that being not in contact with each other each other.
As shown in Figure 6A, two movable end fixed parts of same side have different sizes, so that an activity
Hold the fixed position of movable end and the side on fixed part separated by a distance and another movable end fixed part on movable end consolidate
Positioning is set and side difference separated by a distance.
Fig. 7 shows camera module the standing when providing SMA wire according to another illustrative embodiments of the application
Body figure.It is similar with embodiment shown in Fig. 6 A, in the embodiment of Fig. 7, movable end fixed part is also used to replace coiling
Portion.Unlike the embodiment of Fig. 6 A, in the embodiment of Fig. 7, similar fixation is also used on fixed device 30
Component.As shown in fig. 7, fixed device 30 no longer includes power supply fixing end and ground wire fixing end electrically isolated from one, but solid
Determine that the first fixing piece 34 and the second fixing piece 35 are arranged on device.First power supply fixed part 311 and the first ground wire fixed part 312 that
It is fixed in the first fixing piece 34 to this electrical isolation.Second source fixed part 331 and the second ground wire fixed part 322 are electrically insulated from each other
Ground is fixed in the second fixing piece 35.It is, the both ends that movable end is fixed on every SMA wire of movable end fixed part pass through together
One insulation fixing piece be fixed, the spacing at the line both ends fixed by the fixing piece can be equal to or greater than line diameter, and will
The both ends of SMA wire are drawn outward respectively, and are electrically connected with wiring board realization, to replace directly being electrically connected with wiring board by fixing end
The mode connect.SMA wire can be made to be fixed in fixed device by the way that glue is Nian Jie between SMA wire and fixed device, it can also be by solid
Determine conducting element built in inside device, being electrically connected between SMA wire and wiring board is realized by conducting element, other can also be passed through
Mode realizes being electrically connected between SMA wire and wiring board.
In the embodiment shown in figure, two SMA wires of intersection have the length being equal or approximately equal, to avoid
The phase mutual friction of SMA wire when camera motion.When fixing end is directly electrically connected with wiring board realization by SMA wire, it is located at and fixes
The route that the SMA wire of end top extends downwardly is not limited to show situation in figure.
As a kind of selection, two SMA wires of intersection also can have different length.As shown in figure 8, two intersected
SMA wire also can have different length.In this case, the SMA wire drawn by the fixing piece on fixed device can be with
Extend directly down, and is electrically connected with wiring board realization.
In Fig. 7 and embodiment shown in Fig. 8, the SMA wire and line drawn outward by the fixing piece on fixed device
Road plate is connected, and since SMA wire has the characteristic of heat shrinkable, SMA wire needs to reserve certain length during installation, to prevent
Only line can be broken.As a kind of selection, SMA wire can also terminate in fixing piece, and pass through conventional conducting wire or insert
Molding realizes electrical connection.
Fig. 9 A shows camera module the standing when providing SMA wire according to another illustrative embodiments of the application
Body figure；And Fig. 9 B shows the embodiment according to shown in 9A in the side view of a side.
The difference of embodiment and embodiment shown in figure 1A shown in Fig. 9 A and Fig. 9 B is, the first winding section and
Two winding sections are formed by being parallel in the same shaft member 19 of optical axis two parts, the first winding section of formation and the second winding section
Shaft member is arranged in from the outwardly extending supporting element 191 of corresponding side surface of outer framework.When the first winding section and the second winding section
When being formed in this way, shaft member 19 and supporting element 191 can pass through the camera lens and outer framework 12 of Shooting Technique and camera module
It is integrally formed, to simplify manufacturing process.
It should be appreciated that the winding section and movable end fixed part in above embodiment also are embodied as other bearing parts,
As long as supporting role can be provided the movable end of SMA wire and drive camera lens in the case where SMA wire applied force due to contraction
Module is moved with the contraction of SMA wire.
There is supporting role using the movable end to SMA and can driven and mobile branch when SMA wire is shunk by SMA
In the case where bearing portion, bearing position corresponds to the winding position in embodiments described above.Therefore, in some embodiments
In, the first line and first between the fixation position on the first bearing position and the first power supply fixed part on the first supporting part
The second line between the fixation position on the second bearing position and the first ground wire fixed part on supporting part is parallel to each other, and second
The third line and the second supporting part between fixation position on third bearing position on supporting part and second source fixed part
On the 4th bearing position and the second ground wire fixed part on fixation position between the 4th line be parallel to each other, be parallel to each other
First line and the second line intersect but do not contact each other with the third line and the 4th line being parallel to each other.In some embodiment party
In formula, on each side of outer framework, what the corresponding side surface of the first bearing position and the second bearing position and outer framework was separated by
Distance is different from third bearing position and the 4th bearing position and the corresponding side surface of outer framework is separated by a distance.
Figure 10 schematically shows the perspective according to the optical module of the application embodiment when being wound with SMA wire
Figure.Specifically, Figure 10 shows and is respectively provided with two SMA wires 40 on four sides of outer framework 12, and every SMA wire is consolidated
Fixed end is fixed on fixed device 30, and movable end is supported on supporting part 13,14.
As described above and the structure that is shown in the accompanying drawings, present invention also provides the camera modules with SMA wire
Embodiment.
According to one embodiment, camera module can include: there is the lens module of outer framework, lens module is set
Lower section and the SMA wire for being used to support the pedestal of lens module and being arranged in quadrangle around the outer framework of lens module,
In, the four edges of quadrangle correspond respectively to side of the outer framework on four direction, on each side of outer framework, SMA
Line includes the first SMA wire and the second SMA wire, wherein the first SMA wire and the second SMA wire are arranged to intersected with each other but do not connect
Touching.In this embodiment, for the above embodiment in fixation device and supporting part (including winding section and movable end are fixed
Portion) structure and position can be not particularly limited, as long as the SMA that the outer framework side of lens module is arranged in is enclosed in quadrangle
Around lens module outer framework setting and two SMA wires of each edge of quadrangle can not contact intersected with each other but from
And camera lens can be driven mobile to the direction of needs under different drivings, the purpose of the application can be realized.
In one embodiment, above-mentioned quadrangle is rectangle.
In one embodiment, on each side of outer framework, the first SMA wire and the second SMA wire all have fixation
End and movable end, fixing end are arranged at position corresponding with one end of each side of outer framework, and movable end is supported on outline border
The other end of each side of frame, fixing end relative to pedestal be it is fixed, movable end relative to outer framework be it is fixed,
For SMA wire when deformation occurs, movable end drives lens module to be moved relative to pedestal.It has described in detail above in camera lens
The SMA wire of the outer framework side of module carries out which kind of contraction and movement respectively under different drive modes to realize optical anti-vibration
With the specific situation of auto-focusing, therefore it is not repeated to describe herein.Above in association in each embodiment of attached drawing description
All technical features are suitable for the camera module embodiment with SMA wire in the case where not having conflict.
For example, in one embodiment, at least one of the first SMA wire and the second SMA wire are to fold, to have
There are two fixing end and a movable end, two fixing ends of at least one of the first SMA wire and second SMA wire are the bottom of relative to
Fixed and adjacent position is arranged in seat.The both ends SMA wire folded as a result, is formed as generally parallel to each other.
In one embodiment, the movable end of at least one of the first SMA wire and second SMA wire is supported in camera lens
On the outer framework of module.As described above, movable end can be is supported on the outer of lens module by way of winding or fixing
On frame, and support pattern of the movable end on outer framework is not limited to wind and fix.
In one embodiment, at least one of the first SMA wire and the second SMA wire are folded into two SMA wire sections,
Two SMA wire sections are parallel to each other and length having the same.In various embodiments, two SMA wire sections also can have
Different length.
In one embodiment, the SMA wire in the adjacent side of outer framework is symmetrically arranged, thus in order to realize
Optical anti-vibration and in the case where being applied roughly the same electric current, the two is at the bearing on outer framework or power that supporting part applies
Component in the direction x and the direction y is substantially balanced out.In one embodiment, on each side of outer framework, the first SMA wire
It is arranged to be mutually symmetrical with the second SMA wire and length having the same, to be applied during the focusing process roughly the same
In the case where electric current, at the bearing on outer framework or power that supporting part applies is also roughly the same, the power both thus applied
Axial component is substantially balanced out.In one embodiment, on each side of outer framework, the first SMA wire and the second SMA wire quilt
It is set as at least part being mutually symmetrical.
In one embodiment, on each side of outer framework, the movable end of the first SMA wire and the second SMA wire with
Each side is at a distance of different distances.In one embodiment, on each side of outer framework, the first SMA wire and second
The fixing end of SMA wire and each side are at a distance from different.Thus, it is ensured that two SMA wires of each side are due to contraction
In mobile process, it will not occur to rub and adversely affect the position of lens module each other.
In one embodiment, lens module all has the first supporting part and second on each side of outer framework
Bearing portion, the first supporting part and the second supporting part support the first SMA wire and the second SMA wire respectively.
In one embodiment, at least the first supporting part in the first supporting part and the second supporting part is winding section, the
One SMA wire is wrapped on winding section.
In one embodiment, winding section perpendicular to lens module optical axis be arranged, and have be parallel to optical axis around
Cable architecture is wrapped on winding structure so that the first SMA wire is parallel to optical axis.In one embodiment, winding section is parallel to
The optical axis of lens module is arranged, and has the winding structure perpendicular to optical axis, thus the first SMA wire perpendicular to optical axis be wrapped in around
In cable architecture.In one embodiment, winding section has the winding structure of T shape or work shape, and the first SMA wire is wrapped in winding section
T shape or work shape winding structure on.
In one embodiment, at least the first supporting part in the first supporting part and the second supporting part is that movable end is fixed
Portion, the first SMA wire are fixed on movable end fixed part.In one embodiment, the first SMA wire includes the SMA of two-phase seperation
Line segment, the inside of movable end fixed part further include conducting element, and conducting element is arranged between the SMA wire section of two-phase seperation.By
It is greater than the resistivity of SMA in the resistivity of common conductive element, therefore SMA wire can get more voltages, improves electric energy benefit
With rate.In various embodiments, the first SMA wire may also comprise whole SMA wire, rather than the two sections of SMA wire sections separated；?
In this case, without using additional conducting element in movable end fixed part.
It should be appreciated that in the case where not having conflict, the technical characteristic described in any above embodiment
Entirely or partly it can be used in other embodiments.For example, a winding section can be replaced in embodiment described in Figure 1A
It is changed to movable end fixed part, and another winding section keeps the winding section using winding section shown in figure 1A or other structures.
Above description is only the better embodiment of the application and the explanation to institute's application technology principle.Art technology
Personnel should be appreciated that protection scope involved in the application, however it is not limited to skill made of the specific combination of above-mentioned technical characteristic
Art scheme, while should also cover in the case where not departing from the application design, it is carried out by above-mentioned technical characteristic or its equivalent feature
Any combination and the other technical solutions formed.Such as features described above has similar function with (but being not limited to) disclosed herein
Can technical characteristic replaced mutually and the technical solution that is formed.
Claims (19)
1. a kind of optical module characterized by comprising
Lens module has outer framework；Fixed device, is arranged in one group of diagonal zones of the lens module；And
SMA wire is set as forming four sides facing each other around the outer framework of the lens module,
Wherein, on each side, the SMA wire includes the first SMA wire and the second SMA wire, first SMA wire and described
Second SMA wire is arranged to intersected with each other but does not contact.
2. optical module as described in claim 1, which is characterized in that further include:
The lower section of the lens module is arranged in pedestal, the pedestal, is used to support the lens module, and the fixed fixation
Device.
3. optical module as described in claim 1, which is characterized in that on each side, first SMA wire and institute
It states the second SMA wire and all has fixing end and movable end, the fixing end is on the fixed device, described in the movable end bearing
Another group of diagonal zones of lens module, when deformation occurs for the SMA wire, the movable end drives the lens module opposite
It is mobile in the fixed device.
4. optical module as claimed in claim 3, which is characterized in that in first SMA wire and second SMA wire extremely
Few one is to fold, so that tool is there are two fixing end and a movable end, in first SMA wire and second SMA wire
At least one described two fixing ends fixed and adjacent position is set relative to the pedestal.
5. optical module as claimed in claim 4, which is characterized in that the institute in first SMA wire and second SMA wire
The movable end for stating at least one is supported on the outer framework of the camera module.
6. optical module as claimed in claim 4, which is characterized in that the institute in first SMA wire and second SMA wire
It states at least one and is folded into two SMA wire sections, described two SMA wire sections are parallel to each other and length having the same.
7. optical module as described in claim 1, which is characterized in that the SMA wire in the adjacent side of the outer framework
It is symmetrically arranged.
8. optical module as described in claim 1, which is characterized in that on each side of the outer framework, described first
SMA wire and second SMA wire are arranged to be mutually symmetrical and length having the same.
9. optical module as described in claim 1, which is characterized in that on each side of the outer framework, described first
The movable end of SMA wire and second SMA wire and each side are at a distance from different.
10. optical module as described in claim 1, which is characterized in that on each side of the outer framework, described first
The fixing end of SMA wire and second SMA wire and each side are at a distance from different.
11. optical module as described in claim 1, which is characterized in that the lens module is in each side of the outer framework
The first supporting part and the second supporting part are all had on face, first supporting part and second supporting part support described respectively
One SMA wire and second SMA wire.
12. optical module as claimed in claim 11, which is characterized in that in first supporting part and second supporting part
At least described first supporting part be winding section, first SMA wire is wrapped on the winding section.
13. optical module as claimed in claim 12, which is characterized in that light of the winding section perpendicular to the lens module
Axis setting, and there is the winding structure for being parallel to the optical axis, so that first SMA wire, which is parallel to the optical axis, is wrapped in institute
It states on winding structure.
14. optical module as claimed in claim 12, which is characterized in that the winding section is parallel to the light of the lens module
Axis setting, and there is the winding structure perpendicular to the optical axis, so that first SMA wire is wrapped in institute perpendicular to the optical axis
It states on winding structure.
15. optical module as claimed in claim 12, which is characterized in that the winding section have T shape or work shape around knot
Structure, first SMA wire are wrapped on the T shape of the winding section or the winding structure of work shape.
16. optical module as claimed in claim 11, which is characterized in that in first supporting part and second supporting part
At least described first supporting part be movable end fixed part, first SMA wire is fixed on the movable end fixed part.
17. optical module as claimed in claim 16, which is characterized in that first SMA wire includes the SMA wire of two-phase seperation
Section, the inside of the movable end fixed part further includes conducting element, and the SMA wire of the two-phase seperation is arranged in the conducting element
Between section.
18. a kind of camera module, which is characterized in that including optical module described in any one of claim 1 to 17.
19. a kind of smart machine, which is characterized in that including the camera module described in claim 18.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711299061.2A CN109901347B (en) | 2017-12-08 | 2017-12-08 | Optical assembly, camera module and intelligent equipment with camera module |
| PCT/CN2018/119287 WO2019109929A1 (en) | 2017-12-08 | 2018-12-05 | Optical assembly, image pickup module, and intelligent device provided with image pickup module |
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| CN201711299061.2A CN109901347B (en) | 2017-12-08 | 2017-12-08 | Optical assembly, camera module and intelligent equipment with camera module |
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