WO2020243852A2

WO2020243852A2 - Camera lens module

Info

Publication number: WO2020243852A2
Application number: PCT/CN2019/089715
Authority: WO
Inventors: 李刚; 张晋
Original assignee: 瑞声光学解决方案私人有限公司
Priority date: 2019-06-01
Filing date: 2019-06-01
Publication date: 2020-12-10
Also published as: WO2020244466A1; CN110275269A; CN110275269B

Description

Lens lens module

Technical field

The present invention relates to the field of optical imaging technology, and in particular to a lens module used in mobile electronic devices such as mobile phones.

Background technique

In recent years, with the development of imaging technology and the rise of electronic products with imaging functions, optical lenses have been widely used in various electronic products. Generally, light enters directly from the object side, passes through the lens assembly in a straight line along the optical axis to the image side, and images the object through the lens assembly. However, all the lens components in the prior art have an auto-focusing function. During shooting, the focus driving component can drive the lens component to move relative to the fixed frame along the optical axis direction to capture a clear image. However, in the case of camera shake, the lens assembly will move slightly in a plane perpendicular to the optical axis, which seriously affects the sharpness of the image.

technical problem

Therefore, it is necessary to provide a lens lens module to solve the problem of poor image definition when the existing lens assembly is shaking.

Technical solutions

The objective of the present invention is to provide a lens module capable of simultaneously performing focusing and anti-shake.

The technical scheme of the present invention is as follows:

In order to achieve the above objective, the present invention provides a lens lens module, which includes a fixing frame, a lens assembly arranged in the fixing frame, and connected between the fixing frame and the lens assembly to connect the lens assembly An elastic suspension assembly suspended in the fixing frame, a first magnet arranged on the lens assembly, arranged on the fixing frame and used to cooperate with the first magnet to drive the lens assembly along the light A focus coil that moves in the first direction of the shaft, a second magnet arranged on the lens assembly, and an anti-shake coil arranged on the fixing frame and matched with the second magnet, the anti-shake coil drives The lens assembly moves along a second direction perpendicular to the optical axis to compensate for the shaking of the lens assembly in a direction perpendicular to the optical axis.

As an improvement, the elastic suspension assembly includes a plurality of suspension members arranged at intervals, and each of the suspension members includes a top end and a bottom end opposed to each other, and a deformable portion connected between the top end and the bottom end. , The deformed portion extends perpendicular to the first direction and the second direction, the top end is connected to the fixing frame, the bottom end is connected to the lens assembly, and the lens assembly is connected to the deformable The lens assembly includes an object side wall and an image side wall opposing along the optical axis, a top wall and a bottom wall opposingly disposed along the extension direction of the deformation portion, and the lens assembly from the top wall toward the An extension wall extending from the bottom wall, the extension wall being connected between the object side wall and the image side wall, and the fixing frame corresponding to the object side wall is provided with a light through hole.

As an improvement, the elastic suspension assembly further includes a plurality of first fixing blocks respectively arranged at the top end and embedded in the fixing frame, and a plurality of first fixing blocks respectively arranged at the bottom end and embedded in In the second fixing block in the lens assembly, the fixing frame is provided with a receiving portion corresponding to the top end, and the top end is received in the receiving portion and fixed by the first fixing block.

As an improvement, the suspension is provided with four, and the end of the lens assembly away from the top end toward the object side and the image side of the lens assembly is protruded with two lugs, and the suspension The bottom end of the piece is embedded in the lug and fixed by the second fixing block.

As an improvement, the number of the first magnet, the focus coil, the second magnet, and the anti-shake coil are all two, and the two first magnets are respectively mounted on the two opposite extension walls of the lens assembly Above, the two second magnets are both installed on the top wall, the two focus coils are respectively arranged on both sides of the fixing frame and are arranged opposite to the two first magnets one by one. The shaking coils are all arranged on the fixing frame and arranged opposite to the two second magnets one by one.

As an improvement, the lens lens module further includes a first magnetic conductive plate, a second magnetic conductive plate, and a circuit board arranged on the fixing frame, and the focus coil and the anti-shake coil are all connected to the The circuit board is connected, and the first magnetic conductive plate is arranged on the side of the focusing coil away from the first magnet and forms a magnetic circuit with the first magnet;

The second magnetic conductive plate is arranged on a side of the anti-shake coil away from the second magnetic steel and forms a magnetic circuit with the second magnetic steel.

As an improvement, the first magnetic conductive plate is arranged between the focus coil and the circuit board or on a side of the circuit board away from the focus coil;

The second magnetic conductive plate is arranged between the anti-shake coil and the circuit board or on the side of the circuit board away from the anti-shake coil.

As an improvement, the circuit board includes a first connecting portion embedded in the fixing frame and a second connecting portion bent and extending from the first connecting portion, the first connecting portion and the extension The wall is opposite and electrically connected to the focus coil, and the second connecting portion is opposite to the top wall and electrically connected to the anti-shake coil.

As an improvement, there are two circuit boards, and the two circuit boards are respectively located on opposite sides of the lens assembly.

As an improvement, at least one of the circuit boards further includes an extension board extending from a side of the first connection portion away from the second connection portion to the outside of the fixing frame, and the extension board is electrically connected to an external circuit .

As an improvement, the first connecting portion and/or the second connecting portion are at least partially exposed to the fixing frame, and the lens lens module further includes a protective cover mounted on the fixing frame. And cover the first connecting portion and/or the second connecting portion.

Beneficial effect

The beneficial effects of the present invention are: in the present invention, an elastic suspension assembly is arranged between the fixing frame and the lens assembly to suspend the lens assembly in the fixing frame, and the focus coil and the first magnet are matched to drive the lens assembly along the optical axis. Directional movement to realize the automatic focus of the lens assembly in the fixed frame; in the case of jitter, the lens assembly will move slightly in the plane perpendicular to the optical axis, and the lens assembly is driven by the cooperation between the anti-shake coil and the second magnet Move along the vertical optical axis to realize the anti-shake compensation of the lens assembly in the fixed frame, so as to obtain a clear imaging effect. The lens assembly shares the elastic suspension assembly support and hangs in the fixed frame in the focus movement direction and the anti-shake compensation movement direction, which can save internal space.

Description of the drawings

FIG. 1 is a perspective view of a lens lens module according to an embodiment of the present invention.

Figure 2 is the first exploded schematic diagram of Figure 1.

Figure 3 is the second exploded schematic diagram of Figure 1.

4 is a perspective view of the lens module with the protective cover, the circuit board and the first magnetic conductive plate removed.

Figure 5 is an exploded schematic diagram of Figure 4.

FIG. 6 is a top view of a lens lens module according to an embodiment of the present invention.

Fig. 7 is a schematic cross-sectional view at A-A in Fig. 6.

Fig. 8 is a schematic cross-sectional view at B-B in Fig. 6.

Fig. 9 is a perspective view of a lens assembly according to an embodiment of the present invention.

In the figure: 1. Lens lens module; 10. Fixing frame; 11. Receptacle; 12. Mounting hole; 13. Light hole; 14. First perforation; 15. Second perforation; 20. Circuit board; 21. 22, second connection, 23, extension plate, 30, lens assembly, 31, lens barrel, 311, object side wall, 312, image side wall, 313, top wall, 314, bottom wall, 315 316, lugs, 317, positioning hole, 318, first accommodating groove, 319, second accommodating groove, 32, lens, 40, elastic suspension assembly, 41, suspension member, 411, top end, 412 , Bottom end; 413, deformation part; 42, first fixed block; 43, second fixed block; 50, first magnet; 60, focus coil; 70, second magnet; 80, anti-shake coil; 90, The first magnetic conductive plate; 100, the second magnetic conductive plate; 200, the imaging sensor; 300, the protective cover.

Embodiments of the invention

The present invention will be further described below with reference to the drawings and embodiments.

It should be noted that all the directional indications (such as up, down, inside, outside, top, bottom...) in the embodiments of the present invention are only used to explain the components in a specific posture (as shown in the drawings) If the specific posture changes, the relative positional relationship between them, etc., the directional indication will also change accordingly.

It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, the element may be directly on the other element or there may be a centering element at the same time. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or an intermediate element may also exist.

1-9, an embodiment of the present invention provides a lens lens module 1. The lens lens module 1 includes a fixing frame 10, a circuit board 20, a lens assembly 30, an elastic suspension assembly 40, a first magnet 50, and a focus The coil 60, the second magnet 70 and the anti-shake coil 80, wherein the circuit board 20 is mounted on the fixed frame 10, the focus coil 60 and the anti-shake coil 80 are electrically connected to the circuit board 20, and the lens assembly 30 is arranged on the fixed frame In 10, the elastic suspension assembly 40 is connected between the fixing frame 10 and the lens assembly 30 to suspend the lens assembly 30 in the fixing frame 10, so that the lens assembly 30 is in a suspended state in the fixing frame 10. The first magnet 50 is installed in On the lens assembly 30, the focus coil 60 is arranged on the fixing frame 10 and used to cooperate with the first magnet 50 to drive the lens assembly 30 to move along the first direction of the optical axis, that is, to move along the length of the fixing frame 10 to realize the lens The assembly 30 is automatically focused in the fixing frame 10; the second magnet 70 is arranged on the lens assembly 30, the anti-shake coil 80 is arranged on the fixing frame 10 and cooperates with the second magnet 70, and the anti-shake coil 80 drives the lens assembly 30 along The second direction movement perpendicular to the optical axis is to move along the width direction of the fixing frame 10 to compensate for the shaking of the lens assembly 30 in the direction perpendicular to the optical axis. In specific applications, in the case of jitter shooting, the lens assembly 30 may move slightly in a plane perpendicular to the optical axis. At this time, the anti-shake coil 80 and the second magnet 70 cooperate to drive the lens assembly 30 to make the opposite displacement. , To compensate for the amount of jitter, so as to obtain high-definition images.

Referring to FIGS. 4 to 5 and 9, the lens assembly 30 includes an object side wall 311, an image side wall 312, a top wall 313, a bottom wall 314, and an extension wall 315. The object side wall 311 and the image side wall 312 are opposite along the optical axis The top wall 313 and the bottom wall 314 are arranged opposite to each other along the height direction of the fixing frame 10. The extension wall 315 extends from the top wall 313 to the bottom wall 314, and the extension wall 315 is connected between the object side wall 311 and the image side wall 312, preferably Ground, the number of the first magnet 50, the focus coil 60, the second magnet 70 and the anti-shake coil 80 are all two, and the two first magnets 50 are respectively mounted on the extension walls 315 opposite to the lens assembly 30. The two focus coils 60 are respectively arranged on both sides of the fixed frame 10 and are arranged opposite to the two first magnets 50 one by one. The focus coil 60 cooperates with the first magnet 50 to facilitate driving the lens assembly 30 to move along the first direction of the optical axis Time is more stable.

The two second magnets 70 are both installed on the top wall 313 of the lens assembly 30. The two anti-shake coils 80 are both installed on the fixing frame 10 and are arranged opposite to the two second magnets 70 one by one. The anti-shake coil 80 and the first The two magnets 70 cooperate to make the driving lens assembly 30 move more smoothly in the second direction perpendicular to the optical axis.

Please further refer to FIG. 2, FIG. 3, and FIG. 5 to FIG. 7. In this embodiment, the elastic suspension assembly 40 includes a plurality of suspension members 41 arranged at intervals, and each suspension member 41 includes a top end 411, a bottom end 412, and a deformed portion 413. , The top end 411 and the bottom end 412 are opposed to each other, the deformed portion 413 is connected between the top end 411 and the bottom end 412, the deformed portion 413 extends perpendicular to the first direction and the second direction, the top end 411 is connected to the fixing frame 10, and the bottom end 412 Connected to the lens assembly 30 to hang the lens assembly 30 in the fixing frame 10, and the lens assembly 30 and the deformable part 413 are spaced apart. The deformable part 413 in this embodiment is made of metal material, using alloy material, preferably copper alloy Specifically, it is beryllium copper. It should be noted that when the lens assembly 30 is suspended, it can only move in a horizontal direction, and does not move in a vertical direction.

Preferably, the elastic suspension assembly 40 further includes a plurality of first fixing blocks 42 arranged at the top end 411 and embedded in the fixing frame 10 and a plurality of second fixing blocks arranged at the bottom end 412 and embedded in the lens assembly 30. The fixed block 43. In this embodiment, there are four suspension parts 41. The lens assembly 30 includes a lens barrel 31 and a number of lenses 32 located in the lens barrel 31. The lens barrel 31 has a square structure, and each suspension piece 41 corresponds to a first A fixing block 42 and a second fixing block 43. The end of the lens assembly 30 facing away from the top 411 toward the object side and the image side of the lens assembly 30 is protruding with two lugs 316, and the fixing frame 10 is provided with a corresponding top 411 There are several receiving parts 11, and the top ends 411 of each suspension member 41 are respectively received in each receiving part 11 and fixed by corresponding first fixing blocks 42. The lugs 316 are provided with corresponding positioning holes 317, and each suspension The bottom ends 412 of the members 41 are respectively embedded in the positioning holes 317 on the lugs 316 in a one-to-one correspondence and are fixed by the corresponding second fixing blocks 43, so that the suspension member 41 is fixed between the lens assembly 30 and the fixing frame 10 between. Of course, in specific applications, the number and distribution of the suspension members 41 are not limited to this.

6-8, the lens lens module 1 further includes a first magnetic conductive plate 90 and a second magnetic conductive plate 100. The first magnetic conductive plate 90 is mounted on the circuit board 20, and the first magnetic conductive plate 90 is mounted on The focusing coil 60 is away from the side of the first magnet 50. Preferably, the first magnetic conductive plate 90 is arranged between the focusing coil 60 and the circuit board 20 or on the side of the circuit board 20 away from the focusing coil 60 so as to communicate with the A magnetic steel 50 forms a magnetic circuit to enhance the magnetic strength of the first magnetic steel 50. In this embodiment, the first magnetic conductive plate 90 is disposed on the side of the circuit board 20 away from the focus coil 60.

The second magnetic conductive plate 100 is also installed on the circuit board 20. The second magnetic conductive plate 100 is arranged on the side of the anti-shake coil 80 away from the second magnetic steel 70. Preferably, the second magnetic conductive plate 100 is arranged on the anti-shake coil. Between the coil 80 and the circuit board 20 or on the side of the circuit board 20 away from the anti-shake coil 80 to form a magnetic circuit with the second magnet 70 to enhance the magnetic strength of the second magnet 70. In this embodiment, the first The two magnetic conductive plates 100 are arranged between the anti-shake coil 80 and the circuit board 20.

In this embodiment, the number of circuit boards 20 is two, the two circuit boards 20 are electrically connected, and the two circuit boards 20 are respectively located on opposite sides of the lens assembly 30, one focusing coil 60, one first magnetic conductor The board 90, an anti-shake coil 80 and a second magnetic plate 100 are all connected to one of the circuit boards 20; the other focus coil 60, the other first magnetic plate 90, the other anti-shake coil 80 and the other The two magnetic conductive plates 100 are both connected with another circuit board 20 to realize the fixation of the above-mentioned driving coils and the magnetic conductive plates.

Specifically, the circuit board 20 includes a first connecting portion 21 embedded in the fixing frame 10 and a second connecting portion 22 bent and extending from the first connecting portion 21. The first connecting portion 21 is opposed to the extension wall 315 and is in focus The coil 60 is electrically connected, and the second connecting portion 22 is opposite to the top wall 313 and electrically connected to the anti-shake coil 80. Preferably, the at least one circuit board 20 further includes an extension plate 23 extending from a side of the first connection portion 21 away from the second connection portion 22 to the outside of the fixing frame 10, and the extension board 23 is electrically connected to an external circuit.

Referring to Figures 2, 3 and 9, the fixing frame 10 has a mounting hole 12 for the lens assembly 30 to pass through and fixing, a light-passing hole 13 opened on the counterpart side wall 311 and communicating with the mounting hole 12, and The hole 12 communicates with the first perforation 14 on the side of the fixing frame 10 for the focus coil 60 to pass through, and the second perforation 15 that communicates with the mounting hole 12 and is located above the fixing frame 10 for the anti-shake coil 80 to pass through, Correspondingly, the lens barrel 31 is provided with a first accommodating groove 318 for fixing the first magnet 50 and a second accommodating groove 319 for fixing the second magnet 70. The focus coil 60 in this embodiment is fixed to the circuit On the board 20 and through the first perforation 14 and the first magnet 50 in the first accommodating groove 318, a force for driving the lens assembly 30 to move along the optical axis is generated, and the anti-shake coil 80 is fixed to the circuit board 20 and through the second perforation 15 and the second magnet 70 in the second accommodating groove 319 to generate a force for driving the lens assembly 30 to move in the direction perpendicular to the optical axis, the first connecting portion 21 and/or The second connecting portion 22 is at least partially exposed outside the fixing frame 10.

Preferably, the lens lens module 1 further includes an imaging sensor 200 and a plurality of protective covers 300. The imaging sensor 200 is detachably mounted on the end of the fixing frame 10 close to the image side of the lens assembly 30, and the light reaches the imaging sensor through the lens assembly 30 200 and imaging on the imaging sensor 200. The protective cover 300 is installed on the fixing frame 10 and covers the first connecting portion 21 and/or the second connecting portion 22 on the circuit board 20 to prevent external light from directly entering the lens assembly 30.

The above are only the embodiments of the present invention. It should be pointed out here that for those of ordinary skill in the art, improvements can be made without departing from the inventive concept of the present invention, but these all belong to the present invention. The scope of protection.

Claims

A lens prism module, which is characterized in that it includes a fixed base, a rotating base rotatably mounted on the fixed base, a prism mounted on the rotating base and rotatable with the rotating base, and Between the fixed base and the rotating base, a rotating drive assembly for driving the rotating base to rotate relative to the fixed base and a circuit board electrically connected to the rotating drive assembly, the rotating base includes a mounting position The base of the prism and the rotating connection bracket arranged on the side of the base facing the fixed seat for supporting the rotation of the base, and the rotating drive assembly is made of memory alloy for mounting on the circuit board The base is driven to rotate through deformation under the control of the transmitted electric signal.
The lens prism module of claim 1, wherein the base comprises a substrate for receiving the prism, the substrate has two first side edges spaced apart and two spaced apart opposed to each other and respectively The two first side edges are vertically connected to the second side edge, and the rotation drive assembly includes a first memory alloy and a second memory alloy that connect the substrate and the fixing seat from the two second side edges, respectively And a third memory alloy and a fourth memory alloy respectively connecting the substrate and the fixing seat from the two first side edges, the first memory alloy and the second memory alloy drive the substrate to drive the The prism rotates around a first rotation axis, the third memory alloy and the fourth memory alloy drive the substrate to drive the prism to rotate around a second rotation axis, the first rotation axis and the second rotation axis Intersect vertically.
The lens prism module according to claim 2, wherein the rotating connection bracket comprises a first elastic arm, a second elastic arm, a third elastic arm, and a fourth elastic arm, the first One ends of the elastic support arm, the second elastic support arm, the third elastic support arm and the fourth elastic support arm are converged and fixed to the fixing seat, and the first elastic support arm and the second elastic support arm The support arms respectively diverge toward the two second side edges of the substrate to support the substrate to drive the prism to rotate around the first rotation axis, and the other ends of the third elastic support arm and the fourth elastic support arm The prisms are respectively divergent and distributed toward the two first side edges of the substrate to support the substrate to drive the prism to rotate around the second rotation axis.
The lens prism module according to claim 3, wherein the base further comprises two side plates, and the two side plates respectively face back from the two second side edges of the substrate. The fixing seat extends in the direction, and the base plate and the two side plates are enclosed to form a containing groove, and the prism is installed in the containing groove.
The lens prism module according to claim 4, wherein the fixing seat comprises a horizontal support plate, a vertical support plate and a supporting boss, the vertical support plate is bent from one end of the horizontal support plate Extending and enclosing the lateral support plate to form a groove, the support boss is protrudingly provided in the groove, and the support boss has an inclined extension from the vertical support plate to the lateral support The inclined surface of the plate, the rotating connection bracket abuts against the inclined surface.
The lens prism module of claim 5, wherein both ends of the first memory alloy are fixed on one side of the supporting boss, and the middle part of the first memory alloy is hooked on a The side plate is formed in a "V" shape, both ends of the second memory alloy are fixed on the other side of the support boss, and the middle part of the second memory alloy is hooked on the other side. The side panels are formed in a "V" shape.
The lens prism module according to claim 6, wherein the lens prism module further comprises two first connection terminals installed at intervals on one side of the support boss and two first connection terminals installed at intervals on the support. For the second connection terminal on the other side of the boss, both ends of the first memory alloy are respectively connected to the two first connection terminals, and both ends of the second memory alloy are respectively connected to the two second connection terminals Terminal connection; and/or,

The sides of the two side plates facing away from the accommodating groove are protruded with first hanging posts, and the middle part of the first memory alloy is hooked on the first hanging post of one of the side plates The middle part of the second memory alloy is hooked on the first hanging post of the other side plate.
The lens prism module according to claim 7, wherein both ends of the third memory alloy are fixed on the side of the lateral support plate facing away from the groove, and the third memory alloy The middle part of the hook is set on one of the first side edges of the substrate to form a "V" shape, and both ends of the fourth memory alloy are fixed on the back of the vertical support plate to the groove On the side surface of the fourth memory alloy, the middle part of the fourth memory alloy is hooked on the other first side edge of the substrate to form a "V" shape.
8. The lens prism module according to claim 8, wherein the lens prism module further comprises two third connection terminals installed at intervals on the side of the lateral support plate facing away from the groove, and Two fourth connection terminals installed at intervals on the side of the vertical support plate facing away from the groove, two ends of the third memory alloy are respectively connected to the two third connection terminals, the Two ends of the fourth memory alloy are respectively connected to the two fourth connection terminals; and/or,

The side of the substrate facing the groove is protruded with a second hanging post at a location close to the two first side edges, and the middle of the third memory alloy is hooked on one of the second hanging posts Above, the middle part of the fourth memory alloy is hooked on the other second hanging post.
The lens prism module according to claim 9, wherein a side surface of the lateral support plate facing away from the supporting boss is provided with a first avoiding groove for avoiding the third memory alloy, and the vertical A second avoiding groove for avoiding the fourth memory alloy is provided on the side of the supporting plate opposite to the supporting boss; and/or,

The lens prism module further includes an outer frame, and the fixing base, the rotating base, the prism, the rotation drive assembly, the first connecting terminal, the second connecting terminal, the third connecting terminal, and the fourth connecting terminal are all located in the outer frame. And the first connection terminal, the second connection terminal, the third connection terminal, and the fourth connection terminal are all electrically connected to the circuit board, and the outer frame is provided with a first connection terminal for allowing light to enter the prism An opening and a second opening for refracting light from the prism, the first opening and the second opening are respectively provided on two adjacent sides of the outer frame.