WO2022227715A1

WO2022227715A1 - Optical anti-shake driving assembly and lens assembly

Info

Publication number: WO2022227715A1
Application number: PCT/CN2022/072011
Authority: WO
Inventors: 刘述伦; 耿新龙; 计数标
Original assignee: 广东海德亚科技有限公司
Priority date: 2021-04-30
Filing date: 2022-01-14
Publication date: 2022-11-03
Also published as: CN113093401A

Abstract

An optical anti-shake driving assembly and a lens assembly. The optical anti-shake driving assembly comprises: a substrate (300); a first movable plate (100) movably erected on the substrate (300) and capable of moving along an X-axis direction relative to the substrate (300); a second movable plate (200) movably erected on the first movable plate (100) and capable of moving along a Y-axis direction relative to the first movable plate; a first SMA wire arranged along the X-axis direction, one end of the first SMA wire being connected to the first movable plate (100) or the second movable plate (200), and the first SMA wire (500) being energized and contracted to drive the second movable plate (200) to move along the X-axis direction; and a second SMA wire (400) arranged along the Y-axis direction, one end of the second SMA wire (400) being connected to the second movable plate (200), and the second SMA wire (400) being energized and contracted to drive the second movable plate (200) to move along the Y-axis direction. The optical anti-shake driving assembly improves the control precision by respectively controlling the movement along the X-axis direction and the movement along the Y-axis direction.

Description

Optical image stabilization drive assembly and lens assembly

This application claims the priority of the Chinese patent application with the application number 202110485563.4 and the invention titled "Optical Image Stabilization Drive Assembly and Lens Assembly" filed with the China Patent Office on April 30, 2021, the entire contents of which are incorporated herein by reference middle.

technical field

The present application relates to the technical field of optical image stabilization, and in particular, to an optical image stabilization drive assembly and a lens assembly.

Background technique

With the development of electronic equipment, the requirements for the control accuracy of the optical anti-shake drive components of cameras are getting higher and higher. Among related products, there are fixed parts, movable parts and memory alloy wires used to drive the movement of movable parts. The movable member is in the shape of a box, and the memory alloy wires are arranged around the movable member. The memory alloy wires are divided into X wires arranged along the X axis direction and Y wires arranged along the Y axis direction. The edge of the movable piece is provided with an L-shaped flexible arm, and the flexible arm is arranged along the two adjacent sides of the movable piece. When the X-ray is driven, the flexible arm will be deformed in the X-axis direction, and the The arm also deforms slightly in the Y-axis direction, which affects the control accuracy. Therefore, in related products, there is a coupling between the movement in the X-axis direction and the movement in the Y-axis direction.

SUMMARY OF THE INVENTION

The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes an optical anti-shake drive assembly, which can release the coupling relationship between the movement in the X-axis direction and the movement in the Y-axis direction in the related design, and improve the control accuracy.

Embodiments of the second aspect of the present application further provide an electronic device, including the above optical anti-shake drive assembly.

An embodiment of the first aspect of the present application provides an optical anti-shake drive assembly, including:

substrate;

a first movable plate, which is movably erected on the base plate, and the first movable plate can move relative to the base plate along the X-axis direction;

a second movable plate, which is movably erected on the first movable plate, and the second movable plate can move relative to the first movable plate along the Y-axis direction;

The first SMA wire is arranged along the X-axis direction, one end of the first SMA wire is connected with the first movable plate or the second movable plate, and the first SMA wire can be energized and contracted to drive the second movable plate along the X-axis direction sports;

A second SMA wire, arranged along the Y-axis, one end of the second SMA wire is connected to the second movable plate, and the second SMA wire can be energized and contracted to drive the second movable plate along the Y-axis directional movement.

The optical anti-shake drive assembly according to the embodiment of the first aspect of the present application has at least the following technical effects:

When the second movable plate is required to move along the Y axis, the second SMA wire is energized, and the second SMA wire is energized and contracted to drive the second movable plate to move along the Y axis; when the second movable plate is required to move along the X axis, the first movable plate is energized. When the SMA wire is energized, the first SMA wire is energized and contracted to drive the first movable plate to move along the X-axis, which in turn drives the second movable plate to move along the X-axis; the first SMA wire and the second SMA wire are independent of each other and will not interfere with each other. The movement in the X-axis direction and the decoupling of the Y-axis direction improve the control accuracy.

When the second movable plate needs to move in other directions, the first SMA wire and the second SMA wire can be energized at the same time, and the movement of the first movable plate and the movement of the second movement are combined into the required movement direction.

With the above arrangement, the movements in some directions are synthesized by the movements of the first movable plate and the movements of the second movement, which improves the control precision.

According to an embodiment of the present application, the first movable plate is provided with a first elastic arm, two ends of the first elastic arm are respectively connected to the base plate and the first movable plate, and the first elastic arm can be elastically deformed , to allow the first movable plate to move relative to the base plate along the X-axis direction;

The second movable plate is provided with a second elastic arm, two ends of the second elastic arm are respectively connected with the first movable plate and the second movable plate, and the second elastic arm can be elastically deformed to allow The second movable plate is movable relative to the first movable plate along the Y-axis direction.

According to the embodiment of the present application, the first elastic arm is arranged at the edge of the first movable plate, the second elastic arm is arranged at the edge of the second movable plate, and the swing section of the first elastic arm is the same as the There is a first gap between the first movable plates, the first elastic arm can swing in the first gap, and there is a second gap between the swing section of the second elastic arm and the second movable plate, The second elastic arm can swing within the second gap.

According to an embodiment of the present application, both the first elastic arm and the second elastic arm have a support portion, and the support portion is extended toward the substrate, or extends away from the substrate; when the support portion extends toward the substrate, The support portion of the first elastic arm is in contact with the base plate, and the support portion of the second elastic arm is in contact with the base plate or the first movable plate, so that the base plate and the first movable plate are in contact with each other. and the second movable plate are located at different heights in the Z-axis direction.

According to the embodiment of the present application, the support portion is block-shaped.

According to the embodiment of the present application, both the first swing arm and the second swing arm have a swing section, and at least a part of the swing section is bent toward the substrate, or bent away from the substrate to form a support portion, And the bent part can swing.

According to the embodiment of the present application, a support member is further included, the support member is disposed between the base plate and the first movable plate, and between the first movable plate and the second movable plate, so that the base plate, The first movable plate and the second movable plate are at different heights in the Z-axis direction.

According to the embodiment of the present application, both ends of the first SMA wire are respectively connected to the base plate and the second movable plate, and both ends of the second SMA wire are respectively connected to the base plate and the second movable plate.

According to an embodiment of the present application, the base plate includes a first conductive block, a second conductive block and a first common plate that are insulated from each other, and the second movable plate is electrically connected to the first movable plate through a second elastic arm, The first movable plate is electrically connected to the first common plate through a first elastic arm, one end of the first SMA wire is electrically connected to the first conductive block, and the other end is electrically connected to the second movable plate. One end of the second SMA wire is electrically connected to the second conductive block, and the other end is electrically connected to the second movable plate.

According to the embodiment of the present application, both ends of the first SMA wire are respectively connected to the base plate and the first movable plate, and both ends of the second SMA wire are respectively connected to the second movable plate and the first movable plate.

According to the embodiment of the present application, the substrate includes a first conductive block, a second conductive block and a first common plate that are insulated from each other;

The first movable plate includes a third conductive block and a second common plate that are insulated from each other, and a plurality of the first elastic arms are provided and are respectively connected to the third conductive block and the second common plate. The third conductive block is electrically connected to the second conductive block through the first elastic arm, the second common plate is electrically connected to the first common plate through the first elastic arm, and the second movable plate is electrically connected through the second elastic arm The arm is electrically connected to the second common plate.

One end of the first SMA wire is electrically connected to the first conductive block, the other end is electrically connected to the second common plate, one end of the second SMA wire is electrically connected to the third conductive block, and the other end is electrically connected to the first SMA wire. The two movable boards are electrically connected.

Embodiments of a second aspect of the present application provide a lens assembly, including the optical anti-shake drive assembly described in the embodiments of the first aspect.

The lens assembly according to the embodiment of the second aspect of the present application has at least the following technical effects: by using the optical anti-shake driving assembly of the embodiment of the first aspect, the control accuracy is effectively improved.

Additional aspects and advantages of the present application will be set forth, in part, from the following description, and in part will become apparent from the following description, or may be learned by practice of the present application.

Description of drawings

FIG. 1 is a schematic structural diagram of one of the optical anti-shake driving components in the embodiment of the first aspect of the present application;

FIG. 2 is an exploded schematic diagram of a part of the structure of the optical anti-shake drive assembly shown in FIG. 1;

FIG. 3 is a schematic exploded view of the structure of the optical anti-shake drive assembly shown in FIG. 1 after a part of the structure is hidden;

Fig. 4 is the enlarged schematic diagram of the part circled by dotted circle A in Fig. 1;

Fig. 5 is the enlarged schematic diagram of the part circled by the dotted circle B in Fig. 3;

6 is a schematic structural diagram of one of the design forms of a first elastic arm of an optical anti-shake drive assembly in an embodiment of the first aspect of the application;

7 is a schematic structural diagram of another optical anti-shake drive assembly in the embodiment of the first aspect of the present application;

FIG. 8 is a schematic exploded view of the structure of the optical anti-shake driving assembly shown in FIG. 7 .

Reference numerals: base plate 300; first conductive block 310; second conductive block 320; first common plate 330; first movable plate 100; first elastic arm 110; third conductive block 130; second common plate 140; Two movable plate 200; second elastic arm 210; first SMA wire 500; second SMA wire 400; extension section 111; swing section 112; first adapter piece 710; second adapter piece 720; 900 pieces.

Detailed ways

The following describes in detail the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, but should not be construed as a limitation on the present application.

In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " Back, Left, Right, Vertical, Horizontal, Top, Bottom, Inner, Outer, Axial, Radial, Circumferential The orientation or positional relationship indicated by , "front", "reverse", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the indicated device or element must be It has a specific orientation, is constructed and operates in a specific orientation, and therefore should not be construed as a limitation of the present application. Furthermore, features delimited with "first", "second" may expressly or implicitly include one or more of that feature. In the description of this application, unless stated otherwise, "plurality" means two or more.

The optical anti-shake drive assembly according to the embodiment of the first aspect of the present application will be described below with reference to FIGS. 1 to 3 , including:

substrate 300;

The first movable plate 100 is movably erected on the base plate 300, and the first movable plate 100 can move relative to the base plate 300 along the X-axis direction;

The second movable plate 200 is movably erected on the first movable plate 100, and the second movable plate 200 can move relative to the first movable plate 100 along the Y-axis direction;

The first SMA wire 500 is arranged along the X-axis direction, one end of the first SMA wire 500 is connected to the first movable plate 100 or the second movable plate 200 , and the first SMA wire 500 can be energized and contracted to drive the second movable plate The plate 200 moves along the X-axis direction;

The second SMA wire 400 is arranged along the Y-axis direction, one end of the second SMA wire 400 is connected to the second movable plate 200 , and the second SMA wire 400 can be energized and contracted to drive the second movable plate The plate 200 moves in the Y-axis direction.

Preferably, in all embodiments of the present application, the Y axis, the X axis and the Z axis are perpendicular to each other.

It is conceivable that there are many different connection forms between the first movable plate 100 and the base plate 300: for example, the first movable plate 100 is directly overlapped on the first movable plate 100, The force direction is used to limit the movement direction of the first movable plate 100; for another example, a guide rail is provided between the first movable plate 100 and the base plate 300, and the movement direction of the first movable plate 100 is restricted by the guide rail, and the first SMA wire 500 is in this example , it only plays a driving role; for another example, a guide structure is added between the first movable plate 100 and the base plate 300, and a guide structure is added between the first movable plate 100 and the base plate 300, and the guide structure includes a guide groove and a guide block. The guiding structure is used to limit the movement direction of the first movable plate 100, and the first SMA wire 500 in this example only plays a driving role;

In addition, an elastic member may also be arranged between the first movable plate 100 and the base plate 300. Referring to FIG. 1 to FIG. 3, the direction of movement of the first movable plate 100 is restricted by the direction of elastic deformation of the elastic member. In this example, it only plays a driving role, and this specific embodiment will be described in detail in subsequent embodiments, and will not be repeated here.

It can be understood that the connection form between the second movable panel 200 and the first movable panel 100 is similar to the connection form between the first movable panel 100 and the base plate 300 , and details are not repeated here.

Specifically, the working principle of the present application is as follows: when the second movable plate 200 needs to move along the Y axis, the second SMA wire 400 is energized, and the second SMA wire 400 is energized and contracted to drive the second movable plate 200 to move along the Y axis; When the second movable plate 200 needs to move along the X-axis, the first SMA wire 500 is energized, and the first SMA wire 500 is energized and contracted to drive the first movable plate 100 to move along the X-axis, thereby driving the second movable plate 200 to move along the X-axis; The first SMA wire 500 and the second SMA wire 400 are independent of each other and do not interfere with each other, which realizes the decoupling of the movement in the X-axis direction and the Y-axis direction, and improves the control progress.

When the second movable plate 200 needs to move in other directions, the first SMA wire 500 and the second SMA wire 400 can be energized at the same time, and the movement of the first movable plate 100 and the movement of the second movement are combined into the required movement direction .

With the above arrangement, the movements in some directions are synthesized by the movements of the first movable panel 100 and the movements of the second movement, which improves the control precision.

It can be understood that, the first SMA wire 500 is used to drive the first movable plate 100 to move along the X-axis direction, so one end of the first SMA wire 500 is the fixed end and the other end is the movable end. The fixed end of the first SMA wire 500 may be connected to the substrate 300, and may also be connected to the lens assembly to which the optical anti-shake driving assembly of the embodiment of the present application is applied. The movable end of the first SMA wire 500 can be connected to the first movable plate 100 or the second movable plate 200. When connected to the second movable plate 200, the first movable plate 100 can only be relative to the second movable plate 200. Moving along the Y axis, the second movable plate 200 can transmit the pulling force of the first SMA wire 500 to the first movable plate 100 .

Similarly, the second SMA wire 400 also has a movable end and a fixed end, and the movable end of the second SMA wire 400 is connected with the second movable plate 200 to drive the second movable plate 200 to move along the Y-axis direction. The fixed end of the second SMA wire 400 can be connected to the first movable plate 100 , the substrate 300 , or the lens assembly to which the optical image stabilization drive assembly of the embodiment of the present application is applied.

In depth, the SMA wire has a driving force only when it is contracted, so in order to realize driving in both directions of the X-axis, two first SMA wires 500 can be provided, and the two first SMA wires 500 are symmetrical about the Y-axis set up. Similarly, two second SMA wires 400 can also be provided, and are symmetrically arranged about the X-axis.

For ease of understanding, referring to FIG. 3 , in the form of a specific example, one of the optical anti-shake driving components according to the embodiments of the present application has a plurality of first SMA wires 500 and a plurality of second SMA wires 400 is illustrated below. kind of layout:

substrate 300;

The first movable plate 100 is quadrilateral in shape, and is movably erected on the base plate 300, and the first movable plate 100 can move relative to the base plate 300 along the X-axis direction;

The second movable plate 200 has a quadrangular shape, and is movably mounted on the first movable plate 100, and the second movable plate 200 can move relative to the first movable plate 100 along the Y-axis direction;

The first SMA wire 500 is arranged along the X-axis direction, one end of the first SMA wire 500 is connected to the first movable plate 100 or the second movable plate 200 , and the first SMA wire 500 can be energized and contracted to drive the second movable plate The plate 200 moves along the X-axis direction; the first SMA wires 500 are provided with two, which are respectively arranged on opposite sides of the first movable plate 100 in the Y-axis direction, and the distance between the two first SMA wires 500 is about Y Symmetrical setting of the axis direction;

The second SMA wire 400 is arranged along the Y-axis direction, one end of the second SMA wire 400 is connected to the second movable plate 200 , and the second SMA wire 400 can be energized and contracted to drive the second movable plate The plate 200 moves along the Y-axis direction; the second SMA wires 400 are provided with two, which are respectively arranged on opposite sides of the second movable plate 200 in the X-axis direction, and the distance between the two and the second SMA wires 400 is about X The axis is set symmetrically.

The conductive design of the first SMA wire 500 and the second SMA wire 400 will be described in detail in subsequent embodiments.

In some embodiments of the present application, referring to FIGS. 3 and 5 , the first movable plate 100 is provided with a first elastic arm 110 , the movable end of the first elastic arm 110 is connected with the base plate 300 , and the The first elastic arm 110 can be elastically deformed to allow the first movable plate 100 to move along the X-axis direction;

The second movable plate 200 is provided with a second elastic arm 210, the movable end of the second elastic arm 210 is connected with the first movable plate 100, and the second elastic arm 210 can be elastically deformed to allow all The second movable plate 200 can move along the Y-axis direction.

Specifically, the first elastic arm 110 only has elasticity in the X-axis direction, and has rigidity in other directions, thereby restricting the movement direction of the first movable plate 100 . Similarly, the second elastic arm 210 only has elasticity in the Y-axis direction, thereby restricting the movement direction of the second movable plate 200 .

In addition, the use of the first elastic arm 110 can also make the first movable plate 100 have a tendency to return to the right at any time, and the use of the second elastic arm 210 can make the second movable plate 200 have a tendency to return to the right at any time, which makes the present application The optical image stabilization drive assembly of the embodiment can be reset automatically.

Specifically, the first elastic arm 110 is arranged at the edge of the first movable plate 100 , the second elastic arm 210 is arranged at the edge of the second movable plate 200 , and the swing section 112 of the first elastic arm 110 There is a first gap between it and the first movable plate 100, the first elastic arm 110 can swing within the first gap, the swing section 112 of the second elastic arm 210 and the second movable plate There is a second gap between 200, and the second elastic arm 210 can swing within the second gap.

The first elastic arm 110 and the second elastic arm 210 have a variety of different setting forms, and the following two specific setting forms are listed to illustrate their structural features: In the first setting form, the first elastic arm 110 and the The second elastic arms 210 are all in the shape of "L"; in the second setting form, the first elastic arms 110 and the second elastic arms 210 are both in the shape of "冂".

The first arrangement form of the first elastic arm 110 and the second elastic arm 210 will be described in detail below: Referring to FIG. .

The structure of the first elastic arm 110 is used as an example below. One end of the swing section 112 is connected to the extension section 111 , and the other end of the swing section 112 is used to connect with the base plate 300 . The extension section 111 is arranged on the edge of the first movable plate 100 . And extending along the X-axis direction, the extension section 111 is connected with the first movable plate 100, and the extension section 111 is used to separate the swing section 112 from the first movable plate 100 to form a first gap, and the first gap can be used as a A part of the swinging space of the swinging section 112.

More specifically, referring to FIG. 5 , the shape of the extension section 111 of the first elastic arm 110 is a thick straight arm, and the swing section 112 of the first elastic arm 110 is an elongated straight arm, so that the extension of the first elastic arm 110 The shape formed by the segment 111 and the swinging segment 112 is an “L” shape, and the extending segment 111 is rigid and cannot swing. The upward swing forms elastic force, and in this example, the length direction of the extension section 111 of the first elastic arm 110 is parallel to the X-axis.

It is conceivable that the setting form of the second elastic arm 210 may refer to the first elastic arm 110 , which will not be repeated here.

The second arrangement form of the first elastic arm 110 and the second elastic arm 210 will be described in detail below. The first elastic arm 110 and the second elastic arm 210 each include an extension section 111 and a swing section 112 .

The structure of the first elastic arm 110 is used as an example below. Both ends of the swinging section 112 of the first elastic arm 110 are connected to the extension sections 111 . The middle of the swinging section 112 is used to connect with the base plate 300 . On the edge of the first movable plate 100 and extending in the X-axis direction, the extension section is connected to the first movable plate 100 , and the extension section 111 is used to separate the swing section 112 from the first movable plate 100 , In order to form a first gap, the first gap can be used as a part of the swing space of the swing section 112 .

More specifically, the shape of the extension section 111 is in the shape of a thick straight arm, and the swing section 112 is in the shape of an elongated straight arm, so that the shape formed by the extension section 111 and the swing section 112 is a "傂" shape. The segment 111 is rigid and cannot swing. One end of the swing segment 112 is connected to the extension segment 111 and can swing in the length direction of the extension segment 111 to form an elastic force. In this example, the length of the extension segment 111 of the first elastic arm 110 The direction is parallel to the X axis.

Inspired by the above two configuration forms of the first elastic arm 110 and the second elastic arm 210 , more specific configuration forms of the first elastic arm 110 and the second elastic arm 210 are not listed here.

In order to reduce the contact area between the first movable plate 100 and the base plate 300, and reduce the contact area between the second movable plate 200 and the first movable plate 100, so as to reduce the friction and improve the response speed, a support structure is provided so that the first movable plate 200 A movable panel 100 and the second movable panel 200 are located at different heights in the Z-axis direction. The following two different setting forms of the support structure are used to illustrate the structural features. In the first setting form, the support structure is arranged at On the first elastic arm 110 and the second elastic arm 210; in the second setting form, the support structure is an independent block-shaped component, which is arranged between the first movable plate 100 and the base plate 300, and is arranged on the second movable plate between the board 200 and the first movable board 100 .

The specific structure of the support structure in the first setting form will be described in detail below. The support structure is composed of support parts provided on the first elastic arm 110 and the second elastic arm 210 , and the support parts are extended toward the substrate 300 . , or extending away from the substrate 300 ; when the supporting portion extends toward the substrate 300 , the supporting portion of the first elastic arm 110 abuts against the substrate 300 , and the second elastic arm 210 supports The base plate 300 or the first movable plate 100 is in contact with the base plate 300 or the first movable plate 100, so that the base plate 300, the first movable plate 100 and the second movable plate 200 are located at different heights in the Z-axis direction, and all the The base plate 300 and the support portion of the first elastic arm 110 are insulated from each other, and the base plate 300 and the support portion of the second elastic arm 210 are insulated from each other; when the support portion moves away from the base plate 300 When extending in the direction, the support part is in contact with other external components. For example, when the optical anti-shake assembly of the embodiment of the present application is applied to the lens assembly, the support part is in contact with part of the structure of the lens assembly. When the optical anti-shake assembly of the embodiments of the present application is applied to an electronic device, the support portion is in contact with a part of the structure of the electronic device.

The following takes the structure of the first elastic arm 110 as an example, the distance describes the shape characteristics of the support portion, and the support portion has various setting forms:

In one of the cases, the support portion may be provided on the extension section 111 or the swing section 112, or may be provided on the extension section 111 or the swing section 112 at the same time, and is in the shape of a block.

In another case, referring to FIG. 6 , a partial area of the swinging segment 112 is bent toward the substrate 300 to form a support portion. The bent portion of the first elastic arm 110 can swing in the X-axis direction, and the bent portion of the second elastic arm 210 can swing in the Y-axis direction. Providing a support portion on the first elastic arm 110 reduces the contact area between the first movable plate 100 and the base plate 300 and reduces the frictional force, which can improve the response speed of the optical anti-shake drive assembly in the embodiment of the present application, and can also reduce the loss due to friction.

Similarly, a support portion is provided on the second elastic arm 210, and its function and effect are similar to those of the above-mentioned embodiment, and will not be described one by one here.

In order not to destroy the overall conductive effect, the support parts in the above-mentioned two types of setting forms and the areas they abut against should be insulated from each other, and the base plate 300 and the support parts of the first elastic arm 110 are mutually insulated from each other. Insulation arrangement, the base plate 300 and the support portion of the second elastic arm 210 are insulated from each other. Specifically, the support portion of the first elastic arm 110 and the support portion of the second elastic arm 210 may be made of insulating materials, or the area of the substrate 300 in contact with the support portion may be coated with insulating paint, or both may be made of insulating material. All coated with insulating material.

In addition, it can be understood that the support portion of the second elastic arm 210 may abut with the first movable plate 100 or the base plate 300 . The support portion of the second elastic arm 210 may be made of insulating material, and the area where the second movable plate 200 contacts the support portion of the second elastic arm 210 may be coated with insulating paint, or both may be coated with insulating paint.

The specific structure of the support structure in the second setting form will be described in detail below. Referring to FIG. 2 , the support structure is a support member 900 , and the support member 900 is disposed between the base plate 300 and the first movable plate 100 . , and between the first movable plate 100 and the second movable plate 200 , the base plate 300 , the first movable plate 100 and the second movable plate 200 are at different heights in the Z-axis direction.

Specifically, using the support member 900 in this embodiment can reduce the contact area between the first movable plate 100 and the base plate 300 , reduce the contact area between the second movable plate 200 and the first movable plate 100 , and reduce friction The force can improve the response speed of the optical anti-shake drive assembly in the embodiment of the present application, and can also reduce the loss caused by friction.

Further, the body of the support member 900 may be made of metal, and its surface is coated with a coating, and the coating may be DLC, so as to improve the wear resistance and reduce the friction coefficient at the same time.

It is conceivable that the area of the first movable plate 100 in contact with the support member 900 and the area of the second movable plate 200 in contact with the support member 900 are also plated with DLC coating or parylene coating.

It is conceivable that one of the above two setting forms of the support structure can be selected, or both can be selected.

In some embodiments of the present application, referring to FIG. 1 to FIG. 4 , an adapter sheet is further included, and the adapter sheet is divided into a first adapter sheet 710 and a second adapter sheet 720 , and the first adapter sheet 710 has A raised portion protruding in the Z-axis direction. The fixed end of the first SMA wire 500 is connected to the substrate 300 through the first adapter sheet 710, and the movable end is connected to the first movable plate 100 or the second movable plate 200 through the second adapter sheet 720, so that the first SMA wire Both ends of 500 are at the same height in the Z-axis direction; the movable end of the second SMA wire 400 is connected to the second movable plate 200 through the second adapter sheet 720 , and the fixed end is connected to the substrate 300 through the first adapter sheet 710 Or the first movable plate 100 is connected so that both ends of the second SMA wire 400 are at the same height in the Z-axis direction.

Specifically, using the adapter, both ends of the first SMA wire 500 are at the same height in the Z-axis direction, and both ends of the second SMA wire 400 are at the same height in the Z-axis direction, so that the first SMA wire 500 is at the same height. The component force in the Z-axis direction is less, and the second SMA wire 400 has less component force in the Z-axis direction, so that the control of the optical anti-shake drive assembly of the embodiment of the present application is more accurate.

It is conceivable that both the first movable plate 100 and the second movable plate 200 are provided with avoidance gaps 800 , referring to FIG. 4 , to prevent the first movable plate 100 from colliding with the adapter piece, and to prevent the second movable plate 200 from colliding with the adapter. slices collide.

In addition, in some application situations, the shape of the avoidance notch 800 of the first movable plate 100 is set to be the shape of the projection of the first adapter piece 710 relative to the movement path of the first movable plate 100 on the first movable plate 100 , With the above arrangement, during use, the adapter plate can also play a limiting function for the movement stroke of the first movable plate 100 .

It is conceivable that the setting form of the avoidance notch 800 of the second movable panel 200 refers to the design form of the avoidance notch 800 of the first movable panel 100 , which will not be repeated here.

In the embodiment of the present application, both ends of the first SMA wire 500 are overlapped on the substrate 300, while the second SMA wire 400 has two different overlapping forms: in the first overlapping form, the second SMA Both ends of the wire 400 are lapped onto the first movable plate 100 ; in the second lap connection form, both ends of the second SMA wire 400 are lapped onto the substrate 300 . The beneficial effects brought by the two different overlapping forms are described in detail below in the form of two specific embodiments.

In the first overlapping form of the second SMA wire 400 according to the embodiment of the present application, referring to FIGS. 1 and 3 , both ends of the first SMA wire 500 are respectively connected to the base plate 300 and the second movable plate 200 . , the two ends of the second SMA wire 400 are respectively connected with the base plate 300 and the second movable plate 200 .

It can be understood that, in the present embodiment, although the displacement of the second movable plate 200 relative to the first movable plate 100 will cause one end of the first SMA wire 500 to be offset, due to the relative movement of the second movable plate 200 The stroke is small, the offset angle is also small, and the maximum is not higher than one thousandth of a degree, and the first SMA wire 500 only plays a driving role in this embodiment. Therefore, the influence of the change in the pulling force angle caused by the offset Can be ignored.

In the first overlap connection form of the optical anti-shake drive assembly with respect to the second SMA wire 400, the conductive design of the optical anti-shake drive assembly is as follows: the substrate 300 includes a first conductive block 310 and a second conductive block that are insulated from each other 320 and a first common plate 330, the second movable plate 200 is electrically connected to the first movable plate 100 through the second elastic arm 210, and the first movable plate 100 is connected to the first movable plate 100 through the first elastic arm 110. The common board 330 is electrically connected, one end of the first SMA wire 500 is electrically connected to the first conductive block 310, and the other end is electrically connected to the second movable plate 200; one end of the second SMA wire 400 is electrically connected to the second conductive block 310 The block 320 is electrically connected, and the other end is electrically connected to the second movable plate 200 .

It can be understood that when there are multiple sets of first SMA wires 500 and multiple sets of second SMA wires, correspondingly, multiple first conductive blocks 310 and second conductive blocks 320 also need to be provided, and the first common plate 330 may be Multiple settings can be set or only one can be set.

In the second overlapping form of the second SMA wire 400 according to the embodiment of the present application, referring to FIGS. 7 and 8 , both ends of the first SMA wire 500 are respectively connected to the base plate 300 and the first movable plate 100 . , the two ends of the second SMA wire 400 are respectively connected with the second movable plate 200 and the first movable plate 100 .

Specifically, through the above design, the first SMA wire 500 and the second SMA wire 400 will not shift at any time, so that the optical anti-shake drive assembly of the embodiment of the present application has better control accuracy.

In the second overlapping form of the optical anti-shake drive assembly with respect to the second SMA wire 400, the conductive design is as follows:

The substrate 300 includes a first conductive block 310, a second conductive block 320 and a first common plate 330 which are insulated from each other;

The first movable plate 100 includes a third conductive block 130 and a second common plate 140 that are insulated from each other. The third conductive block 130 is electrically connected to the second conductive block 320 through the first elastic arm 110 . The second common board 200 is electrically connected to the first common board 100 through the first elastic arm 110 , and the second movable board 200 is electrically connected to the second common board 140 through the second elastic arm 210 .

One end of the first SMA wire 500 is electrically connected to the first conductive block 310 , the other end is electrically connected to the second common board 140 , one end of the second SMA wire 400 is electrically connected to the third conductive block 130 , and the other end is electrically connected to the third conductive block 130 . One end is electrically connected to the second movable plate 200 .

Specifically, a plurality of the second elastic arms are provided, and are respectively located on the third conductive block 130 and the second common plate 140 .

It can be understood that when there are multiple sets of the first SMA wires 500 and the second SMA wires 400 : correspondingly, multiple first conductive blocks 310 need to be set to adapt to the number of the first SMA wires 500 . Both the second conductive block 320 and the third conductive block 130 are provided in multiples to match the number of the second SMA wires 400 . It should be noted that the second conductive block 320 and the third conductive block 130 should form a plurality of mutually independent conductive units in a one-to-one correspondence. Different second SMA wires 400 are connected to different conductive units, the first common plates 330 may be provided in multiples or a single one, and the first common plates 330 and the second common plates 140 may be provided in multiples or a single one.

Through the above design, the optical anti-shake driving assembly of the embodiment of the present application has better control precision.

The anti-shake driving assembly of the embodiment of the present application is described in detail below in the form of a specific embodiment:

The substrate 300 includes a first conductive block 310, a second conductive block 320, and a first common plate 330 that are insulated from each other; two first conductive blocks 310, two second conductive blocks 320, and a first Two common plates 330 are provided.

The first movable plate 100 has a quadrangular shape, and is movably erected on the base plate 300. The first movable plate 100 can move relative to the base plate 300 along the X-axis direction. A first elastic arm 110 is provided on both sides of the direction. The first elastic arm 110 includes an extension section 111 and a swing section 112. One end of the swing section 112 of the first elastic arm The extension section 111 is connected, the extension section 111 of the first elastic arm 110 is connected with the first movable plate 100, the other end of the swing section 112 of the first elastic arm 110 forms the movable end of the first elastic arm 110, the The movable end of a spring arm 110 is electrically connected to the first common plate 330;

The second movable plate 200 has a quadrangular shape, and is movably mounted on the first movable plate 100. The second movable plate 200 can move relative to the first movable plate 100 along the Y-axis direction. The movable plate 200 is provided with a second elastic arm 210 on both sides in the Y-axis direction. The second elastic arm 210 includes an extension section 111 and a swing section 112. The extension section 111 of the second elastic arm 210 is connected, the extension section 111 of the second elastic arm 210 is connected with the second movable plate 200 , and the other end of the swing section 112 of the second elastic arm 210 forms the second elastic arm 210 the movable end, the movable end of the first elastic arm 110 is electrically connected with the first movable plate 100;

The first SMA wire 500 is arranged along the X-axis direction, one end of the first SMA wire 500 is connected to the second movable plate 200, and the first SMA wire 500 can be energized and contracted to drive the second movable plate 200 to move along the X-axis direction; The first SMA wires 500 are provided with two, which are respectively arranged on opposite sides of the first movable plate 100 in the Y-axis direction, and the two first SMA wires 500 are mirrored about the Y-axis direction; the first SMA wires One end of the wire 500 is electrically connected to the first conductive block 310 , and the other end is electrically connected to the second movable plate 200 .

The second SMA wire 400 is arranged along the Y-axis direction, one end of the second SMA wire 400 is connected to the second movable plate 200 , and the second SMA wire 400 can be energized and contracted to drive the second movable plate The plate 200 moves along the Y-axis direction; the second SMA wires 400 are provided with two pieces, which are respectively arranged on opposite sides of the second movable plate 200 in the X-axis direction, and the two second SMA wires 400 are about the X-axis direction. A mirror image arrangement; one end of the second SMA wire 400 is electrically connected to the second conductive block 320 , and the other end is electrically connected to the second movable plate 200 .

A support member 900 is provided between the base plate 300 and the first movable plate 100, and between the first movable plate 100 and the second movable plate 200, so that the base plate 300, all the The first movable plate 100 and the second movable plate 200 are at different heights in the Z-axis direction.

The principle and structure of this specific embodiment refer to the above-mentioned embodiments. Since the structure of this specific embodiment refers to the above-mentioned embodiments, it has the beneficial technical effects of the above-mentioned embodiments, and will not be repeated here.

Embodiments of the second aspect of the present application provide a lens assembly (not shown in the drawings), including an optical anti-shake drive assembly, and the optical anti-shake drive assembly is described with reference to all the above embodiments.

According to the lens assembly of the embodiment of the second aspect of the present application: by using the optical anti-shake driving assembly of the embodiment of the first aspect, the control accuracy is effectively improved.

For the principles and beneficial technical effects of this specific embodiment, reference is made to all the above embodiments, which will not be repeated here.

In the description of this specification, reference to the terms "one embodiment," "some embodiments," "exemplary embodiment," "example," "specific example," or "some examples", etc., is meant to incorporate the embodiments A particular feature, structure, material, or characteristic described by an example or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily 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.

Although the embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the present application, The scope of the application is defined by the claims and their equivalents.

Claims

An optical image stabilization drive assembly, characterized in that it includes:

substrate;

a first movable plate, which is movably erected on the base plate, and the first movable plate can move relative to the base plate along the X-axis direction;

a second movable plate, which is movably erected on the first movable plate, and the second movable plate can move relative to the first movable plate along the Y-axis direction;

The first SMA wire is arranged along the X-axis direction, one end of the first SMA wire is connected with the first movable plate or the second movable plate, and the first SMA wire can be energized and contracted to drive the second movable plate along the X-axis direction sports;

A second SMA wire, arranged along the Y-axis, one end of the second SMA wire is connected to the second movable plate, and the second SMA wire can be energized and contracted to drive the second movable plate along the Y-axis directional movement.
The optical anti-shake drive assembly according to claim 1, wherein the first movable plate is provided with a first elastic arm, and two ends of the first elastic arm are respectively connected to the base plate and the first movable plate , and the first elastic arm can be elastically deformed to allow the first movable plate to move relative to the base plate along the X-axis direction;

The second movable plate is provided with a second elastic arm, two ends of the second elastic arm are respectively connected with the first movable plate and the second movable plate, and the second elastic arm can be elastically deformed to allow The second movable plate is movable relative to the first movable plate along the Y-axis direction.
The optical anti-shake drive assembly according to claim 2, wherein the first elastic arm is arranged on the edge of the first movable plate, and the second elastic arm is arranged on the edge of the second movable plate, so There is a first gap between the swinging section of the first elastic arm and the first movable plate, the first elastic arm can swing within the first gap, and the swinging section of the second elastic arm and the There is a second gap between the second movable plates, and the second elastic arm can swing in the second gap.
The optical anti-shake drive assembly according to claim 2 or 3, wherein the first elastic arm and the second elastic arm each have a support portion, and the support portion extends toward the substrate or extends away from the substrate ; When the support portion extends toward the base plate, the support portion of the first elastic arm is in contact with the base plate, and the support portion of the second elastic arm is in contact with the base plate or the first movable plate connected, so that the base plate, the first movable plate and the second movable plate are located at different heights in the Z-axis direction.
The optical anti-shake drive assembly according to claim 4, wherein the support portion is block-shaped.
The optical anti-shake drive assembly according to claim 4, wherein the first swing arm and the second swing arm each have a swing section, and at least a part of the swing section is bent toward the substrate, or is disposed toward the substrate. It is bent and arranged in a direction away from the substrate to form a support portion, and the bent portion can swing.
The optical anti-shake drive assembly according to claim 2 or 3, further comprising a support member, the support member is disposed between the base plate and the first movable plate, and the first movable plate and the second movable plate, the base plate, the first movable plate and the second movable plate are at different heights in the Z-axis direction.
The optical anti-shake drive assembly according to claim 2, wherein both ends of the first SMA wire are respectively connected to the base plate and the second movable plate, and both ends of the second SMA wire are respectively connected to the base plate and the second movable plate is connected;

The base plate includes a first conductive block, a second conductive block and a first common plate that are insulated from each other, the second movable plate is electrically connected to the first movable plate through a second elastic arm, and the first movable plate The first elastic arm is electrically connected to the first common plate, one end of the first SMA wire is electrically connected to the first conductive block, the other end is electrically connected to the second movable plate, and one end of the second SMA wire is electrically connected to the first conductive block. The second conductive block is electrically connected, and the other end is electrically connected to the second movable plate.
The optical anti-shake drive assembly according to claim 2, wherein both ends of the first SMA wire are respectively connected to the substrate and the first movable plate, and both ends of the second SMA wire are respectively connected to the first movable plate. The second movable plate and the first movable plate are connected;

The substrate includes a first conductive block, a second conductive block and a first common plate which are insulated from each other;

The first movable plate includes a third conductive block and a second common plate that are insulated from each other, and a plurality of the first elastic arms are provided and are respectively connected to the third conductive block and the second common plate. The third conductive block is electrically connected to the second conductive block through the first elastic arm, the second common plate is electrically connected to the first common plate through the first elastic arm, and the second movable plate is electrically connected through the second elastic arm the arm is electrically connected to the second common board;

One end of the first SMA wire is electrically connected to the first conductive block, the other end is electrically connected to the second common plate, one end of the second SMA wire is electrically connected to the third conductive block, and the other end is electrically connected to the first SMA wire. The two movable boards are electrically connected.
A lens assembly, comprising the optical anti-shake drive assembly according to any one of claims 1 to 9.