CN214751042U - Actuator, lens module and electronic equipment - Google Patents

Abstract

The present disclosure provides an actuator, a lens module and an electronic apparatus, the actuator including: the lens comprises a shell (10), a magnetic assembly (30) and an adjusting assembly (50), wherein the shell (10) is used for arranging a lens group (20) with a first lens group (21) and a second lens group (22); the magnetic assembly (30) is arranged on the shell (10) and is used for forming a magnetic field; the adjusting assembly (50) is arranged on the casing (10) and used for driving the second lens group (22) to move relative to the first lens group (21) through the magnetic assembly (30). This actuator is through setting up adjusting part for it can drive the relative second lens group of first lens group and remove, thereby makes the realization to the bad optimization of nearly burnt analytic power, the promotion of image four corners analytic power, thereby improves the quality of image.

Description

Actuator, lens module and electronic equipment

Technical Field

The present disclosure relates to the field of camera shooting technologies, and in particular, to an actuator, a lens module, and an electronic apparatus.

Background

At present, the photographing technology of mobile terminals such as mobile phones is standard configuration, and with the improvement of the technology of the whole industry, the pixels of a camera are higher and higher, and the functions are diversified; one hundred million pixels, optical anti-shake, optical zoom function has also been widely used; the photo optimization of different scenes can be realized by different lenses, and the voice coil motor is used as a driving part in the camera, so that the development of more than ten years is passed, and particularly, the common automatic focusing technology is mature.

The actuator in the related art cannot adjust the inside of the lens group, and thus the resolution force at four corners of the near focus is not ideal, resulting in the difference in the resolution at the four corners of the image from that at the center.

SUMMERY OF THE UTILITY MODEL

The present disclosure is directed to solving, at least to some extent, one of the technical problems in the related art. To this end, an embodiment of the present disclosure proposes an actuator including:

the lens group comprises a shell, a first lens group and a second lens group, wherein the shell is used for arranging the lens group with the first lens group and the second lens group;

the magnetic assembly is arranged on the shell and used for forming a magnetic field;

and the adjusting component is arranged on the shell and is acted by the magnetic field of the magnetic component so as to drive the second lens group to move relative to the first lens group along the direction of the optical axis of the lens optical path.

The actuator of the present disclosure has at least the following technical effects: through setting up adjusting part for it can drive the relative second lens group of first lens group and remove, thereby makes the realization to the bad optimization of nearly burnt analytic power, the promotion of image four corners analytic power, thereby improves the quality of image.

Optionally, the actuator further includes a focusing assembly disposed in the housing, and the focusing assembly is acted by the magnetic field of the magnetic assembly to drive the lens group to move along the optical axis of the optical path of the lens.

Optionally, the magnetic assembly includes two first magnets, and the two first magnets are respectively disposed on two sides of the lens group;

the focusing assembly comprises two first coils, and the two first magnets and the two first coils are arranged in a one-to-one correspondence manner;

the adjusting component comprises a second coil, and the second coil is arranged between the two first magnets.

Optionally, the magnetic assembly further includes two second magnets, and the two second magnets are respectively disposed on two sides of the lens group;

the center line of each first coil is located at the middle position of the first magnet and the second magnet.

Optionally, each of the first coils is located outside the corresponding first magnet and the corresponding second magnet.

Optionally, the adjusting assembly further includes a carrier, the carrier has a first connecting portion for connecting the second lens group, a first elastic member is disposed on the carrier, and the first elastic member has a second connecting portion for connecting the first lens group;

the second coil is fixed to the carrier.

Optionally, a lens holder is disposed in the housing, the lens holder has a third connecting portion for connecting the lens group, and the lens holder is suspended from the housing by a second elastic member.

Optionally, a gasket is fixedly arranged in the housing, and the second elastic member is connected to the housing through the gasket.

Optionally, a circuit board is disposed in the housing, and a lead of each of the first coil and/or the second coil is connected to the circuit board.

Optionally, a position sensor is disposed on the circuit board, and the position sensor is configured to detect a position of the first lens group and/or the second lens group.

Optionally, the casing includes upper cover and base, the upper cover with the base lock is connected to form accommodation space, magnetic component focus the subassembly and the adjusting part all set up in the accommodation space, at least partial structure of lens group is located in the accommodation space.

The present disclosure further provides a lens module, including:

a lens group including a first lens group and a second lens group;

and the adjusting assembly is connected with the lens group and can drive the second lens group to move relative to the first lens group through the magnetic assembly.

The present disclosure further provides an electronic device having the lens module of the embodiment of the present disclosure.

Drawings

Fig. 1 is an exploded view of a lens module according to an embodiment of the disclosure;

fig. 2 is a schematic perspective view of a lens module according to an embodiment of the disclosure;

FIG. 3 is a top view of a lens module according to an embodiment of the disclosure;

FIG. 4 is a schematic cross-sectional view taken along A-A of FIG. 3;

FIG. 5 is a schematic diagram of relative positions of a first coil, a second coil, a first magnet, and a second magnet according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of a first elastic member according to an embodiment of the disclosure.

Reference numerals:

10-a housing; 101-upper cover; 102-a base; 11-a gasket; 12-a circuit board; 13-a position sensor;

20-a lens group; 21-a first lens group; 22-a second lens group; 23-a lens holder; 24-a second elastic member;

30-a magnetic component; 31-a first magnet; 32-a second magnet;

41-a first coil;

50-an adjustment assembly; 51-a second coil; 52-a carrier; 53-first elastic member.

Detailed Description

Reference will now be made in detail to embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the present disclosure, and should not be construed as limiting the present disclosure.

Referring to fig. 1 to 4, the present embodiment provides an actuator including: the housing 10, the magnetic assembly 30 and the adjustment assembly 50; the housing 10 is used to dispose a lens group 20 having a first lens group 21 and a second lens group 22. It is understood that the lens group 20 has at least two lens groups, and the relative position between the two lens groups can be adjusted, and one function of the actuator of the present embodiment is to adjust the relative position between the two lens groups. Further, all include at least one lens in first lens group 21 and the second lens group 22, in this embodiment, can relative movement between first lens group 21 and the second lens group 22 to can adjust the light path, realize the bad problem of nearly burnt camera lens four corners resolution. The magnetic assembly 30 is disposed on the housing 10 and fixed relative to the lens set 20, for example, the magnetic assembly 30 can be directly or indirectly fixed to the lens set 20. The magnetic assembly 30 is used to form a magnetic field, and the adjusting assembly 50 can drive the position of the first lens group 21 relative to the second lens group 22 by using the magnetic field formed by the magnetic assembly 30. The above embodiment is through setting up adjusting part 50 for it can drive the relative second lens group of first lens group and remove, and the adjustment moves the position relation of the relative second lens group 22 of first lens group 21, thereby makes the realization to the bad optimization of near focus analytic power, the promotion of image four corners analytic power, thereby improves the quality of image.

In one embodiment, the actuator further includes a focusing assembly disposed on the housing 10, and the focusing assembly is acted by the magnetic field of the magnetic assembly 30 to drive the lens group 20 to move along the optical axis of the lens optical path, so as to implement the auto-focusing function. The focusing assembly can drive the magnetic assembly 30 by changing magnetic flux through electrification and the like. The focusing assembly is to move the entire lens group 20.

Wherein the principle of the magnetic assembly 30 driven by the adjusting assembly 50 is the same as that of the magnetic assembly 30 driven by the focusing assembly. The "driving" in the above-described embodiment may be the displacement of the magnetic component 30 to be driven, or the displacement of the driving body (focusing component, adjustment component 50). It can be understood that: the "driving the second lens group 22 to move relative to the first lens group 21" may be moving the second lens group 22, leaving the first lens group 21 stationary, moving the first lens group 21, leaving the second lens group 22 stationary, or moving the first lens group 21 and the second lens group 22 simultaneously, but at different speeds.

Thus, the lens group 20 having a plurality of lens groups can be selected from the actuators of the above embodiments, and the actuator can realize not only the automatic focusing function but also the optimization of the poor near-focus resolving power and the improvement of the resolving power at four corners of the image by providing two driving bodies (the focusing assembly and the adjusting assembly 50), thereby improving the quality of the image.

Referring to fig. 5, in one embodiment, the magnetic assembly 30 includes two first magnets 31, and the two first magnets 31 are respectively disposed at two sides of the lens group 20; the focusing assembly comprises two first coils 41, and the two first magnets 31 and the two first coils 41 are arranged in a one-to-one correspondence manner; the adjustment assembly 50 includes a second coil 51, and the second coil 51 is disposed between the two first magnets 31. The two first magnets 31 are located at the beam symmetrical position of the center line of the lens group 20, and the two first magnets 31 can be directly or indirectly fixedly connected with the lens group 20. The first magnet 31 is close to the corresponding first coil 41, thereby improving the driving sensitivity.

For example, the magnetic assembly 30 may further include two second magnets 32, and the two second magnets 32 are respectively disposed at two sides of the lens group 20; the center line of each first coil 41 is located at the middle position of the first magnet 31 and the second magnet 32. By providing the first magnet 31 and the second magnet 32 at the same time, the magnitude of the driving force can be increased, and the driving sensitivity can be further improved. On the basis of this, a person skilled in the art can also provide more pairs of magnets, and all solutions based on this concept fall within the scope of protection of the present application.

In one embodiment, each first coil 41 is located outside of the corresponding first and second magnets 31, 32. Since the second coil 51 is located between the two first magnets 31, the first magnets 31 separate the second coil 51 from the first coil 41, thereby reducing interference between each other and improving the stability of the operation of the actuator.

In one embodiment, the adjustment assembly 50 further includes a carrier 52, the carrier 52 having a first connecting portion for connecting the second lens group 22, the carrier 52 having a first elastic member 53 disposed thereon, the first elastic member 53 having a second connecting portion for connecting the first lens group 21; the second coil 51 is fixed to the carrier 52. It can be seen that the carrier 52 has the function of fixing the second lens group 22, the carrier 52 can be relatively fixedly disposed with the second lens group 22, and on the other hand, the carrier has the function of connecting the first lens group 21 by disposing the first elastic element 53, and since the first lens group 21 and the second lens group 22 can move relatively, if the carrier 52 is connected to the first lens group 21 by the first elastic element 53, the connection state that can be realized is elastic connection, that is, the first lens group 21 and the second lens group 22 can move relatively under the condition of overcoming the elastic force of the first elastic element 53.

In one embodiment, a lens holder 23 is disposed in the housing 10, the lens holder 23 has a third connecting portion for connecting the lens group 20, and the lens holder 23 is suspended from the housing 10 by a second elastic member 24. "suspension" here means having a connection relationship, but not having a limitation of freedom of relative displacement. It can be seen that the lens holder 23 has the function of fixing the lens group 20, and for example, the lens holder 23 is fixedly connected with the first lens group 21, and since the lens group 20 can move as a whole, the connection form of the lens group 20 and the housing 10 through the second elastic member 24 is also elastic.

Wherein, the first elastic member 53 and the second elastic member 24 may be elastic sheets. As shown in fig. 6, which is a schematic structural view of the first elastic member 53, the first elastic member 53 includes two identical elastic sheets. Reference is made below to an exemplary structural description of the first elastic member 53 and the second elastic member 24.

In one embodiment, a gasket 11 is fixedly disposed in the housing 10, and the second elastic member 24 is connected to the housing 10 through the gasket 11. The provision of the spacer 11 improves the stability of the mounting of the internal components and facilitates the attachment of the second elastic member 24. The circuit board 12 is disposed in the casing 10, and a lead of each of the first coils 41 and/or the second coils 51 is connected to the circuit board 12, so that the current state of each of the first coils 41 and/or the second coils 51 is controlled by the circuit board 12, and of course, a lead of the second coil 51 may also be directly led out from the casing 10. As shown in fig. 1, the circuit board 12 may be C-shaped and surround the lens set 20, wherein two first coils 41 may be directly fixed on the circuit board 12, so as to shorten the length of the leads of the first coils 41 and reduce the space occupied in the housing 10. Wherein the circuit board 12 may be fixed to the inner wall of the housing 10 and one side of the circuit board 12 may rest on the spacer 11.

In one embodiment, a position sensor 13 is disposed on the circuit board 12, and the position sensor 13 is used for detecting the position of the first lens group 21 and/or the second lens group 22, so as to facilitate the control of the driving amount.

In one embodiment, the housing 10 includes an upper cover 101 and a base 102, the upper cover 101 and the base 102 are connected in a snap-fit manner and form a receiving space, the magnetic assembly 30, the focusing assembly and the adjusting assembly 50 are disposed in the receiving space, and at least a portion of the lens assembly 20 is disposed in the receiving space.

In one embodiment, referring to fig. 6, the first elastic member 53 has an outer spring frame 531, a first outer spring wire 532, an inner spring frame 533, a second outer spring wire 534, and an inner spring frame 535; the second coil 51 is fixed around the outer side of the carrier 52, and the second lens group 22 is fixedly connected to the carrier 52 through four supporting points on the outer side; the spring inner frame 533 is fixedly connected to the bottom surface of the carrier 52, the spring middle frame 535 is connected to the lens holder 23, the spring inner frame 533 is connected to the lower spring middle frame 535 by the second inner elastic thread 534, and the spring outer frame 531 is connected to the spring inner frame 533 by the first outer elastic thread 532. Thus, the second lens group 22, the second coil 51 and the carrier 52 are suspended at the lower portion of the lens holder 23 by the internal suspension structure of the first elastic element 53, and the second lens group 22, the carrier 52 and the second coil 51 can move along the optical axis direction of the optical path of the lens relative to the lens holder 23.

A lens holder 23 and a first magnet 31 fixed thereto; the second magnet 32 and the carrier 52 and the second coil 51 suspended thereunder are suspended between the base 102 and the pad 11 through the second elastic member 24 and the outer portion of the first elastic member 53. Wherein the lower spring housing 531 may be fixed to the base 102.

The second elastic member 24 also has an outer frame fixed to the spacer 11, an elastic thread, and an inner frame fixed to the upper end surface of the lens holder 23, and the outer frame is connected to the inner frame via the elastic thread. The specific structure of the first elastic member 53 and the second elastic member 24 is not limited to that shown in fig. 1, as long as the function of elastically suspending the first lens group 21 and the second lens group 22 is satisfied.

Based on the actuator of the above embodiments, the present embodiment further provides a lens module, which includes a lens group 20 having a first lens group 21 and a second lens group 22, and the actuator of any of the above embodiments; the adjusting assembly 50 is connected to the lens group 20 and can drive the second lens group 22 to move relative to the first lens group 21 through the magnetic assembly 30. Specific matching modes of the lens group 20 and the actuator can be seen in the following examples.

In one embodiment, the first lens group 21 is fixed to the lens holder 23, and the second lens group 22 is fixed to the carrier 52. The lens holder 23 is suspended on the spacer 11 in the housing 10 by the second elastic member 24 so that the entire lens group 20 can elastically move with respect to the housing 10, and the carrier 52 is suspended on the first lens group 21 by the first elastic member 53 so that the second lens group 22 can elastically move with respect to the first lens group 21.

Based on the lens module of the foregoing embodiments, the present disclosure further provides an electronic device having the lens module of any of the foregoing embodiments. The electronic equipment can be mobile phones, tablet computers and other equipment with cameras.

In the description of the present disclosure, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present disclosure and to simplify the description, but are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present disclosure.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present disclosure, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise.

In the present disclosure, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present disclosure can be understood by those of ordinary skill in the art as appropriate.

In the present disclosure, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present disclosure have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure, and that changes, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present disclosure.

Claims (12)

1. An actuator, comprising:

a housing (10), the housing (10) being configured to house a lens group (20) having a first lens group (21) and a second lens group (22);

a magnetic assembly (30), the magnetic assembly (30) being disposed on the housing (10) for forming a magnetic field;

adjusting part (50), adjusting part (50) set up in casing (10), adjusting part (50) receive magnetic component (30)'s magnetic field effect, in order to drive second lens group (22) are relative along camera lens light path place optical axis direction first lens group (21) remove.

2. The actuator of claim 1, further comprising a focusing assembly disposed on the housing (10), wherein the focusing assembly is acted on by the magnetic field of the magnetic assembly (30) to drive the lens group (20) to move along the optical axis of the optical path of the lens.

3. Actuator according to claim 2, wherein said magnetic assembly (30) comprises two first magnets (31), said two first magnets (31) being respectively arranged on either side of said lens group (20);

the focusing assembly comprises two first coils (41), and the two first magnets (31) and the two first coils (41) are arranged in a one-to-one correspondence manner;

the adjusting assembly (50) comprises a second coil (51), and the second coil (51) is arranged between the two first magnets (31).

4. Actuator according to claim 3, wherein the magnetic assembly (30) further comprises two second magnets (32), the two second magnets (32) being respectively arranged on both sides of the lens group (20);

the center line of each of the first coils (41) is located at a position intermediate the first magnet (31) and the second magnet (32).

5. Actuator according to claim 4, wherein each of said first coils (41) is located outside the corresponding first and second magnets (31, 32).

6. The actuator of claim 3, wherein the adjustment assembly (50) further comprises a carrier (52), the carrier (52) having a first connection portion for connecting the second lens group (22), the carrier (52) having a first resilient member (53) disposed thereon, the first resilient member (53) having a second connection portion for connecting the first lens group (21);

the second coil (51) is fixed to the carrier (52).

7. Actuator according to claim 6, wherein a lens holder (23) is arranged in the housing (10), the lens holder (23) having a third connecting portion for connecting the lens group (20), the lens holder (23) being suspended from the housing (10) by a second resilient member (24).

8. Actuator according to claim 7, wherein a spacer (11) is fixedly arranged in the housing (10), and the second spring element (24) is connected to the housing (10) via the spacer (11).

9. Actuator according to claim 3, wherein a circuit board (12) is arranged in the housing (10), and wherein the leads of each first coil (41) and/or second coil (51) are connected to the circuit board (12).

10. Actuator according to claim 9, wherein a position sensor (13) is provided on the circuit board (12), the position sensor (13) being adapted to detect the position of the first and/or second lens group (21, 22).

11. A lens module, comprising:

a lens group (20), the lens group (20) including a first lens group (21) and a second lens group (22);

and the actuator of any of claims 1-10, said adjustment assembly (50) being coupled to said lens group (20) and capable of driving said second lens group (22) relative to said first lens group (21) via said magnetic assembly (30).

12. An electronic apparatus having the lens module according to claim 11.

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