CN213276094U - Lens assembly - Google Patents

Abstract

The utility model discloses a lens component, which comprises a main body part, a lens module and a first actuator component, wherein a containing cavity is arranged inside the main body part; the lens module is arranged in the accommodating cavity of the main body part; the first actuator assembly comprises a first memory alloy wire and a first actuator body; the first actuating body comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is connected with the first connecting rod, the other end of the first connecting rod is connected with the main body part, and the other end of the second connecting rod is connected with the lens module; the end part of the first memory alloy wire is connected with the joint of the first connecting rod and the second connecting rod; the first actuator assembly is arranged on the side edge of the lens module, and the first memory alloy wire is arranged along the optical axis direction of the lens module. The length of the first memory alloy wire can reach a larger driving stroke without being overlong, so that the anti-shake function of the lens is achieved, and the miniaturization of the size of the lens assembly is facilitated.

Description

Lens assembly

Technical Field

The utility model relates to a camera lens imaging optics technical field, in particular to camera lens subassembly.

Background

In recent years, high-performance lens modules are mounted in portable terminals such as smartphones and tablet personal computers. The high performance lens module generally has an auto-focusing (auto focusing) function and an Optical Image Stabilization (OIS) function.

Optical anti-shake is the most accepted anti-shake technology by the public, and compensates the light path of the hand shake through a movable component, thereby realizing the effect of reducing the blur of the photo. Usually, the gyroscope in the lens module detects a tiny movement and transmits a signal to the microprocessor to immediately calculate a displacement amount to be compensated, and then the compensation lens group compensates according to the shaking direction and the displacement amount of the lens, and the compensation lens group correspondingly adjusts the position and the angle to keep the light path stable, thereby effectively overcoming the image blur generated by the vibration of the camera. The lens assembly is connected with one end of a memory alloy wire, the other end of the memory alloy wire is connected with a fixed assembly, and the lens assembly is directly pulled through the memory alloy wire to play a role in anti-shaking.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least, for this reason, the utility model provides a lens subassembly, the stable performance of this lens subassembly, the drive stroke is bigger, does benefit to the miniaturization of lens subassembly volume.

The lens assembly comprises a main body part, a lens module and a first actuator assembly, wherein a containing cavity is arranged in the main body part; the lens module is arranged in the accommodating cavity of the main body part; the first actuator assembly comprises a first memory alloy wire and a first actuator body; the first actuating body comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is connected with the first connecting rod, the other end of the first connecting rod is connected with the main body part, and the other end of the second connecting rod is connected with the lens module; the end part of the first memory alloy wire is connected with the joint of the first connecting rod and the second connecting rod; the first actuator assembly is arranged on the side edge of the lens module, the first memory alloy wire is arranged along the optical axis direction of the lens module and can drive the lens module to move along the vertical direction perpendicular to the optical axis.

According to the utility model discloses lens subassembly can reach following beneficial effect at least: the first actuator assembly comprises a first memory alloy wire and a first actuator, the first actuator comprises a first connecting rod and a second connecting rod which are respectively positioned at two sides of the first memory alloy wire, the first connecting rod is connected with the main body part and the first memory alloy wire, the second connecting rod is connected with the lens module and the first memory alloy wire, a certain included angle is formed between the first connecting rod and the first memory alloy wire, and the first actuator assembly can drive the first connecting rod and the second connecting rod to rotate to move the lens module through contraction of the first memory alloy wire, so that the lens anti-shake effect is achieved. Because the first connecting rod and the second connecting rod have a certain included angle with the first memory alloy wire, when the first memory alloy wire has a certain expansion amount in the direction along the optical axis, the driving stroke of the first connecting rod and the second connecting rod in the vertical direction is larger than the expansion amount of the first memory alloy wire. And because the first and second links are disposed on both sides of the first memory alloy wire, the first and second links move in opposite directions to achieve a greater driving stroke. Through so setting up for the length of first memory alloy line need not the overlength can reach great drive stroke, plays anti-shake's effect to the camera lens in vertical direction, and does benefit to the miniaturization of camera lens subassembly volume.

In some embodiments of the present invention, the main body includes an upper housing and a base, a containing cavity is formed between the upper housing and the base, and the lens module is disposed in the containing cavity.

In some embodiments of the present invention, the first actuator assembly includes two first actuator bodies, and the two first actuator bodies are symmetrically disposed at two ends of the first memory alloy wire with respect to the first memory alloy wire.

In some embodiments of the present invention, a second actuator assembly is further included, the second actuator assembly including a second memory alloy wire and a second actuating body; the second actuating body comprises a third connecting rod and a fourth connecting rod, one end of the third connecting rod is connected with the main body part, and the other end of the fourth connecting rod is connected with the lens module; the end part of the second memory alloy wire is connected with the joint of the third connecting rod and the fourth connecting rod; the second actuator assembly is arranged at the top or the bottom of the lens module, and the second memory alloy wire is arranged along the optical axis direction and can drive the lens module to move along the left and right directions perpendicular to the optical axis.

In some embodiments of the present invention, the second actuator assembly is provided with a plurality of sets, and the plurality of sets of the second actuator assembly are respectively disposed on two sides of the optical axis and are both a third connecting rod or a fourth connecting rod on one side close to the optical axis.

In some embodiments of the present invention, two second actuating bodies are included in the second actuator assembly, and the two second actuating bodies are symmetrically disposed at both ends of the second memory alloy wire with respect to the second memory alloy wire.

In some embodiments of the present invention, the main body further comprises a fixing plate, and the main body is connected to the second actuator assembly through the fixing plate.

In some embodiments of the present invention, a third actuator assembly is further included, the third actuator assembly including a third memory alloy wire and a third actuating body; the third actuating body comprises a fifth connecting rod and a sixth connecting rod, one end of the fifth connecting rod is connected with the fifth connecting rod, the other end of the fifth connecting rod is connected with the main body part, and the other end of the sixth connecting rod is connected with the lens module; the end part of the third memory alloy wire is connected with the joint of the fifth connecting rod and the sixth connecting rod; the third actuator assembly is disposed at the top or bottom of the lens module, and the third memory alloy wire is disposed in a direction perpendicular to the optical axis.

In some embodiments of the present invention, the third actuator assembly is provided with a plurality of sets, the plurality of sets being provided along the optical axis direction.

In some embodiments of the present invention, two of the third actuating bodies are included in the third actuator assembly, and the two third actuating bodies are symmetrically disposed at both ends of the third memory alloy wire with respect to the third memory alloy wire.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above-mentioned additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic view of an overall structure of a lens assembly according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a structure of separating an upper housing from a base of a lens assembly according to an embodiment of the present invention;

fig. 3 is a schematic top structure diagram of a lens module according to an embodiment of the present invention;

fig. 4 is a schematic bottom structure diagram of a lens module according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a first actuator assembly state change in accordance with an embodiment of the present invention.

Reference numerals:

a main body part 100, an upper case 110, a base 120, a fixing plate 130, a lens module 200,

A first actuator assembly 310, a first memory alloy wire 311, a first link 312, a second link 313,

A second actuator assembly 320, a second memory alloy wire 321, a third link 322, a fourth link 323,

A third actuator assembly 330, a third memory alloy wire 331, a fifth link 332, a sixth link 333, a connecting block 340, and an optical axis S.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

The lens assembly according to an embodiment of the present invention is described below with reference to fig. 1 to 5.

For example, as shown in fig. 1 and fig. 2, a lens assembly according to an embodiment of the present invention includes a main body 100, a lens module 200, and a first actuator assembly 310, wherein a receiving cavity is disposed inside the main body 100; the lens module 200 is mounted in the receiving cavity of the body part 100; the first actuator assembly 310 includes a first memory alloy wire 311 and a first actuator body; the first actuator includes a first link 312 and a second link 313 having one ends connected to each other, the other end of the first link 312 being connected to the main body 100, the other end of the second link 313 being connected to the lens module 200; the end of the first memory alloy wire 311 is connected with the junction of the first link 312 and the second link 313; the first actuator assemblies 310 are disposed on two opposite sides of the lens module 200, and the first memory alloy wires 311 are disposed along the optical axis S of the lens module 200 and can drive the lens module 200 to move in the vertical direction perpendicular to the optical axis S.

For example, as shown in fig. 1 and 2, the main body 100 is provided with a receiving cavity therein; the lens module 200 is mounted in the receiving cavity of the body part 100. The first actuator assembly 310 includes a first memory alloy wire 311 and a first actuator, the first actuator includes a first link 312 and a second link 313, one end of the first link 312 is connected to the main body 100 and the first memory alloy wire 311, the second link 313 is connected to the lens module 200 and the first memory alloy wire 311, a certain angle is formed between the first link 312 and the first memory alloy wire 311 and between the second link 313 and the first memory alloy wire 311, the end of the first memory alloy wire 311 is connected to the connection between the first link 312 and the second link 313, and the first actuator assembly 310 can drive the first link 312 and the second link 313 to rotate to move the lens module 200 by contracting the first memory alloy wire 311, thereby performing a focusing function. The first actuator assemblies 310 are disposed on two opposite sides of the lens module 200, and the first memory alloy wires 311 are disposed along the direction of the optical axis S, so that the first actuator assemblies 310 can drive the lens module 200 in the vertical direction, thereby playing a role of anti-shake in the vertical direction.

The first actuating body further includes a connection block 340, and the first and second connection rods 312 and 313 are connected to the main body 100 and the lens module 200 through the connection block 340, respectively. The connection between the first link 312 and the second link 313 is more stable by the arrangement of the connection blocks 340, and further, a straight line connected between the two connection blocks 340 of the first actuator is perpendicular to the optical axis S in a vertical direction, and a direction in which the first actuator assembly 310 drives the lens module 200 to move is the same as a direction of the straight line connected between the two connection blocks 340.

Because the first and second links 312 and 313 have a certain included angle with the first memory alloy wire 311, and the first memory alloy wire 311 is disposed along the direction of the optical axis S, when the first memory alloy wire 311 has a certain amount of expansion and contraction, the driving stroke of the first and second links 312 and 313 in the vertical direction is greater than the amount of expansion and contraction of the first memory alloy wire 311. It is easy to understand that, because the first memory alloy wire 311 and the first connection rod 312 have a certain angle therebetween, the relationship between the first connection rod 312 and the first memory alloy wire 311 can be regarded as a structure that is approximately triangular, as shown in fig. 5. In the triangle formed by the first link 312 and the first memory alloy wire 311, the length of the first link 312 may be regarded as constant, and when the first memory alloy wire 311 contracts, the included angle between the first link 312 and the first memory alloy wire 311 becomes larger, so that the linear distance between the point where the first link 312 is connected with the main body 100 and the first memory alloy wire 311 becomes larger. It is easy to understand that when the amount of contraction of the first memory alloy wire 311 is the same, the smaller the angle between the first link 312 and the first memory alloy wire 311 is, the greater the distance the first link 312 moves.

Similarly, the relationship between the second link 313 and the first memory alloy wire 311 is also the same, and since the first link 312 and the second link 313 are disposed at both sides of the first memory alloy wire 311, the first link 312 is fixedly connected to the main body portion 100, and the second link 313 is fixedly connected to the lens module 200, when the first link 312 and the second link 313 move in opposite directions while the main body portion 100 remains stationary, the lens module 200 moves a greater distance with respect to the main body portion 100, thereby achieving a greater driving stroke. Through such setting, make the length of first memory alloy line 311 need not the overlength can reach great drive stroke, play the effect of camera lens anti-shake, thereby do benefit to the miniaturization of camera lens subassembly volume.

For example, as shown in fig. 3, the lens module 200 is provided with first actuator assemblies 310 on two opposite sides, the first actuator assemblies 310 on the two opposite sides may be oriented in the same direction or in opposite directions, but the first actuator assemblies 310 on the same side are oriented in the same direction.

The first actuator assemblies 310 facing one direction means that the first link 312 and the second link 313 are both located above or below the first memory alloy wire 311, and by arranging such that the driving forces of the first actuator assemblies 310 located on the same side are the same, a resultant force can be formed, and by arranging the first actuator assemblies 310 located on both sides to be opposite, the first actuator assemblies 310 located on both sides of the lens module 200 can drive the lens module 200 in opposite directions.

Further, the first actuator assembly 310 also serves to support the lens module 200, the first link 312 of the first actuator is connected to the body portion 100, and the second link 313 is connected to the lens module 200, so that the first actuator assembly 310 can serve to support the lens module 200. It should be noted that the number of the first actuator assemblies 310 is not limited to two, and the number of the first actuator assemblies 310 may be three, four, etc.

In some embodiments of the present invention, the main body 100 includes an upper housing 110 and a base 120, a receiving cavity is formed between the upper housing 110 and the base 120, and the lens module 200 is disposed in the receiving cavity.

For example, as shown in fig. 1 and 2, the main body 100 includes an upper housing 110 and a base 120, a receiving cavity is formed between the upper housing 110 and the base 120, and the lens module 200 is located in the receiving cavity of the main body 100. Of course, the main body 100 may be integrally molded without providing the upper case 110 and the base 120.

In some embodiments of the present invention, two first actuating bodies are included in the first actuator assembly 310, and the two first actuating bodies are symmetrically disposed at both ends of the first memory alloy wire 311 with respect to the first memory alloy wire 311.

For example, as shown in fig. 2 and 5, the first actuator assembly 310 includes two first actuating bodies symmetrically disposed at two ends of the first memory alloy wire 311 with respect to the first memory alloy wire 311, wherein two first connecting rods 312 are disposed at the same side of the first memory alloy wire 311 and disposed at two ends of the first memory alloy wire 311, respectively, and two second connecting rods 313 are disposed at the other side of the first memory alloy wire 311 and disposed at two ends of the first memory alloy wire 311, respectively.

The second connecting rods 313 are located on the same side of the first memory alloy wire 311 and are fixedly connected with the lens module 200, so that when the first memory alloy wire 311 contracts, the two second connecting rods 313 can drive the lens module 200 in the same direction, and the effect that the two second connecting rods 313 drive the lens module 200 in opposite directions to drive the lens module 200 to move cannot be achieved. The first connection rod 312 and the first memory alloy line 311 are arranged in the same way.

And the two first links 312 located on the same side of the memory alloy wire have the same length and the same included angle with the first memory alloy wire 311, so that the two first links 312 can move in the same direction and the same moving distance when the first memory alloy wire 311 extends and contracts, and the lens module 200 and the main body 100 can be driven to move in the horizontal direction without relative rotation. The second link 313 is provided in the same manner as the first link 312.

In some embodiments of the present invention, a second actuator assembly 320 is further included, the second actuator assembly 320 includes a second memory alloy wire 321 and a second actuating body; the second actuator comprises a third connecting rod 322 and a fourth connecting rod 323, one end of the third connecting rod 322 is connected with the main body part 100, and the other end of the fourth connecting rod 323 is connected with the lens module 200; the end of the second memory alloy wire 321 is connected with the junction of the third link 322 and the fourth link 323; the second actuator assembly 320 is disposed at the top or bottom of the lens module 200, and the second memory alloy wire 321 is disposed along the optical axis S direction and can drive the lens module 200 to move in the left and right direction perpendicular to the optical axis S.

For example, as shown in fig. 3, the second actuator assembly 320 is located above the lens module 200, and is connected to the main body 100 and the lens module 200 through a third link 322 and a fourth link 323, respectively, and the second memory alloy wire 321 of the second actuator assembly 320 is arranged along the optical axis S direction of the lens module 200, so that the second actuator assembly 320 can drive the lens module 200 to move along a direction perpendicular to the optical axis S by contracting the second memory alloy wire 321, and play a role in preventing shake in the horizontal direction. The principle by which the second actuator assembly 320 drives the lens module 200 is the same as the first actuator assembly 310.

The second actuating body further includes a connecting block 340, and the third link 322 and the fourth link 323 are connected to the main body 100 and the lens module 200 through the connecting block 340, respectively. The connection between the third link 322 and the fourth link 323 is more stable by the connection block 340. Further, a straight line connecting between the two connecting blocks 340 of the second actuating body is perpendicular to the optical axis S in the vertical direction, and is perpendicular to a straight line connecting between the two connecting blocks 340 of the first actuating body. The direction in which the second actuator assembly 320 drives the lens module 200 to move is the same as the direction of the line connecting between the two connecting blocks 340 of the second actuating body.

In some embodiments of the present invention, the second actuator assembly 320 is provided with a plurality of sets, and the plurality of sets of second actuator assemblies 320 are respectively disposed on two sides of the optical axis S and are also the third connecting rod 322 or the fourth connecting rod 323 on the side close to the optical axis S.

The second actuator assembly 320 may be provided with a plurality of groups, and may be respectively disposed on two sides of the optical axis S of the lens module 200 and also be a third link 322 or a fourth link 323 on a side close to the optical axis S. For example, as shown in fig. 3, two sets of second actuator assemblies 320 are provided, and the two sets of second actuator assemblies 320 are respectively located at two sides of the lens module 200.

The second actuator assemblies 320 on the same side of the optical axis S are the third connecting rod 322 or the fourth connecting rod 323 on the same side close to the optical axis S, so that the second actuator assemblies 320 on the same side of the optical axis S can drive the lens module 200 in the same direction, and the second actuator assemblies 320 cannot drive the lens module 200 normally.

The two sets of second actuator assemblies 320 are the same as the fourth connecting rod 323 on the side close to the optical axis S, so that the second actuator assemblies 320 on the two sides of the optical axis S of the lens module 200 can drive the lens module 200 in opposite directions, and when the lens module 200 needs to be driven to the right side, the second actuator assemblies 320 on the left side of the optical axis S can be started; the second actuator assembly 320 located at the right side of the optical axis S can be activated when it is required to drive the lens module 200 to the left side, thereby driving the lens module 200 from different directions to achieve the lens anti-shake effect.

In some embodiments of the present invention, two second actuating bodies are included in the second actuator assembly 320, and the two second actuating bodies are symmetrically disposed about the second memory alloy wire 321 at two ends of the second memory alloy wire 321.

For example, as shown in fig. 3, the second actuator assembly 320 includes two second actuating bodies symmetrically disposed at two ends of the second memory alloy wire 321 with respect to the second memory alloy wire 321, wherein two third connecting rods 322 are located at the same side of the second memory alloy wire 321 and disposed at two ends of the second memory alloy wire 321, respectively, and two fourth connecting rods 323 are located at the other side of the second memory alloy wire 321 and disposed at two ends of the second memory alloy wire 321, respectively.

The second actuator assembly 320 is provided in a similar principle and advantageous effects to the first actuator assembly 310, but the first actuator assembly 310 plays a role of anti-shaking and supporting the lens module 200 in a vertical direction, and the second actuator assembly 320 plays a role of anti-shaking of the lens module 200 in a horizontal direction.

In some embodiments of the present invention, the main body 100 further includes a fixing plate 130, and the main body 100 is connected to the second actuator assembly 320 through the fixing plate 130.

For example, as shown in fig. 2, the main body 100 further includes a fixing plate 130, and the main body 100 is connected to the second actuator assembly 320 through the fixing plate 130. The main body 100 includes an upper housing 110, a base 120, and a fixing plate 130, a receiving cavity is formed between the upper housing 110 and the base 120, the receiving cavity is used for placing the lens module 200, the fixing plate 130 is fixedly connected to the upper housing 110, and the main body 100 is connected to the second actuator assembly 320 through the fixing plate 130.

The lens assembly is more conveniently attached by the provision of the mounting plate 130 such that the body portion 100 is connected to the second actuator assembly 320 via the mounting plate 130 rather than the second actuator assembly 320 being directly connected to the body portion 100. When mounting, the lens module 200 may be mounted on the base 120, the second actuator assembly 320 and the fixing plate 130 are coupled with the lens module 200, and the upper case 110 is mounted. Instead of providing the base 120 and the upper housing 110, the lens module 200, the second actuator assembly 320 and the fixing plate 130 may be connected and then installed in the receiving cavity of the main body 100. This is more convenient than mounting directly in the receiving cavity of the main body part 100 without providing the fixing plate 130.

In some embodiments of the present invention, a third actuator assembly 330 is further included, the third actuator assembly 330 including a third memory alloy wire 331 and a third actuating body; the third actuator includes a fifth link 332 and a sixth link 333, one end of which is connected to each other, the other end of the fifth link 332 is connected to the main body 100, and the other end of the sixth link 333 is connected to the lens module 200; the end of the third memory alloy wire 331 is connected to the connection of the fifth link 332 and the sixth link 333; the third actuator assembly 330 is disposed at the top or bottom of the lens module 200, and the third memory alloy wire 331 is disposed in a direction perpendicular to the optical axis S.

For example, as shown in fig. 3 and 4, the third actuator assembly 330 is disposed at the bottom of the lens module 200, and includes a third memory alloy wire 331 and a third actuator, the third actuator includes a fifth link 332 and a sixth link 333, one end of which is connected to each other, the fifth link 332 is connected to the main body 100 and the third memory alloy wire 331, the sixth link 333 is connected to the lens module 200 and the third memory alloy wire 331, an included angle is formed between the fifth link 332 and the sixth link 333 and the third memory alloy wire 331, an end of the third memory alloy wire 331 is connected to a connection point of the fifth link 332 and the sixth link 333, and the third actuator assembly 330 can drive the fifth link 332 and the sixth link 333 to rotate to move the lens module 200 back and forth by contraction of the third memory alloy wire 331, thereby performing a focusing function.

In some embodiments of the present invention, the third actuator assembly 330 is provided with a plurality of sets, and the plurality of sets of third actuator assemblies 330 are provided along the optical axis S direction.

For example, as shown in fig. 4, two sets of the third actuator assemblies 330 are disposed at the bottom of the lens module 200, the two sets of the third actuator assemblies 330 are disposed along the direction of the optical axis S, and the second connecting rods 313 of the two sets of the third actuator assemblies 330 are close to each other, so that the driving directions of the two sets of the third actuator assemblies 330 are opposite, and the two sets of the third actuator assemblies 330 can drive the lens module 200 in opposite directions, thereby controlling the movement of the lens module 200 more accurately and facilitating focusing. The number of third actuator assemblies 330 is not limited to two, and the number of third actuator assemblies 330 may be three, four, etc.

In some embodiments of the present invention, two third actuating bodies are included in the third actuator assembly 330, and the two third actuating bodies are symmetrically disposed about the third memory alloy wire 331 at both ends of the third memory alloy wire 331.

For example, as shown in fig. 4, the third actuator assembly 330 includes two third actuating bodies symmetrically disposed at two ends of the third memory alloy wire 331 with respect to the third memory alloy wire 331, wherein two fifth links 332 are located at the same side of the third memory alloy wire 331 and are respectively disposed at two ends of the third memory alloy wire 331, and two sixth links 333 are located at the other side of the third memory alloy wire 331 and are respectively disposed at two ends of the third memory alloy wire 331.

The third actuator assembly 330 is similar in principle and advantageous effects to the first actuator assembly 310 and the second actuator assembly 320, but the first actuator assembly 310 and the second actuator assembly 320 perform an anti-shake function with respect to the lens module 200, and the third actuator assembly 330 performs a focusing function with respect to the lens module 200 by driving the lens module 200 to move back and forth in the direction of the optical axis S.

The lens assembly according to an embodiment of the present invention is described in detail below with reference to fig. 1 to 5 as a specific embodiment. It is to be understood that the following description is illustrative only and is not intended as a specific limitation on the invention.

The lens assembly according to the embodiment of the present invention comprises a main body 100, a lens module 200, a first actuator assembly 310, a second actuator assembly 320 and a third actuator assembly 330, wherein the main body 100 is provided with a receiving cavity therein; the lens module 200 is mounted in the receiving cavity of the body part 100; the first actuator assembly 310 includes a first memory alloy wire 311 and a first actuator body; the first actuator includes a first link 312 and a second link 313 having one ends connected to each other, the other end of the first link 312 being connected to the main body 100, the other end of the second link 313 being connected to the lens module 200; the end of the first memory alloy wire 311 is connected with the junction of the first link 312 and the second link 313; the first actuator assembly 310 is disposed at a side of the lens module 200, the first memory alloy wire 311 is disposed along the optical axis S direction of the lens module 200, and the first actuator assembly 310 can drive the lens module 200 to move in the vertical direction by the electrified contraction of the first memory alloy wire 311, thereby playing a role of anti-shake in the vertical direction.

The second actuator assembly 320 is located above the lens module 200, and is connected to the main body 100 and the lens module 200 through a third link 322 and a fourth link 323, respectively, and the second memory alloy wire 321 of the second actuator assembly 320 is disposed along the optical axis S direction of the lens module 200, so that the second actuator assembly 320 can drive the lens module 200 to move along the horizontal direction perpendicular to the optical axis S by contracting the second memory alloy wire 321, and play a role in preventing shake in the horizontal direction.

The third actuator assembly 330 is located below the lens module 200, and is connected to the main body 100 and the lens module 200 through a fifth link 332 and a sixth link 333, respectively, and a third memory alloy wire 331 of the third actuator assembly 330 is arranged in a direction perpendicular to the optical axis S of the lens module 200, so that the third actuator assembly 330 can drive the lens module 200 to move in the optical axis S direction by contraction of the third memory alloy wire 331, and a lens focusing effect is achieved.

The first actuator assemblies 310 are respectively disposed on the sides of the lens module 200 in a group, and can play a role in preventing the lens module 200 from shaking and also can play a role in supporting the lens module 200. The two sets of second actuator assemblies 320 are the same as the fourth connecting rod 323 on the side close to the optical axis S, so that the second actuator assemblies 320 on the two sides of the optical axis S of the lens module 200 can drive the lens module 200 in opposite directions, and when the lens module 200 needs to be driven to the right side, the second actuator assemblies 320 on the left side of the optical axis S can be started; the second actuator assembly 320 located at the right side of the optical axis S can be activated when it is required to drive the lens module 200 to the left side, thereby driving the lens module 200 from different directions to achieve the lens anti-shake effect. The two sets of the third actuator assemblies 330 are disposed at the bottom of the lens module 200, the two sets of the third actuator assemblies 330 are disposed along the optical axis S, and the sixth connecting rods 333 of the two sets of the third actuator assemblies 330 are close to each other, so that the driving directions of the two sets of the third actuator assemblies 330 are opposite, and the two sets of the third actuator assemblies 330 can drive the lens module 200 in the opposite directions, so that the movement of the lens module 200 can be more accurately controlled, and focusing is facilitated.

Further, the second actuating body further includes a connecting block 340, and the third link 322 and the fourth link 323 are connected to the main body 100 and the lens module 200 through the connecting block 340, respectively. The third link 322 and the fourth link 323 are connected more stably by the connection block 340, and the first actuating body and the third actuating body are provided similarly. Further, a line connecting between the two connecting blocks 340 of the first actuating body is perpendicular to the optical axis S in the vertical direction, a line connecting between the two connecting blocks 340 of the second actuating body is perpendicular to the optical axis S in the horizontal direction, and a line connecting between the two connecting blocks 340 of the third actuating body is parallel to the optical axis S.

According to the utility model discloses lens subassembly, through so setting up, can reach some following beneficial effects at least: the first actuator assembly 310 is disposed at a side of the lens module 200 to achieve an anti-shake and supporting effect on the lens module 200, the second actuator assembly 320 is disposed at a top of the lens module 200 to achieve an anti-shake function of the lens module 200, and the third actuator assembly 330 is disposed at a bottom of the lens module 200 to achieve a focusing function of the lens module 200. Meanwhile, the first link 312 is connected with the main body 100 and the first memory alloy wire 311, the second link 313 is connected with the lens module 200 and the first memory alloy wire 311, and a certain included angle is formed between the first link 312 and the first memory alloy wire 311 and between the second link 313 and the first link 312, and the first actuator assembly 310 can drive the first link 312 and the second link 313 to rotate to move the lens module 200 by contraction of the memory alloy wire, thereby playing a role of anti-shake. Because the first and second links 312 and 313 have a certain angle with the first memory alloy wire 311, when the first memory alloy wire 311 has a certain amount of expansion, the driving stroke of the first and second links 312 and 313 is greater than the amount of expansion of the first memory alloy wire 311. And since the first and second links 312 and 313 are disposed at both sides of the first memory alloy wire 311, the first and second links 312 and 313 move in opposite directions to achieve a greater driving stroke. The second actuator assembly 320 and the third actuator assembly 330 are similarly treated. Through such setting for the length of memory alloy line need not the overlength can reach great drive stroke, plays the effect of camera lens anti-shake, thereby does benefit to the miniaturization of camera lens subassembly volume.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular 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 invention. In this specification, the schematic representations of the terms used above 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.

While embodiments of the present invention 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 to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A lens assembly, comprising:

the body part is internally provided with an accommodating cavity;

a lens module mounted in the accommodating cavity of the main body part;

a first actuator assembly including a first memory alloy wire and a first actuator body; the first actuating body comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is connected with the first connecting rod, the other end of the first connecting rod is connected with the main body part, and the other end of the second connecting rod is connected with the lens module; the end part of the first memory alloy wire is connected with the joint of the first connecting rod and the second connecting rod; the first actuator assemblies are arranged on two opposite sides of the lens module, the first memory alloy wires are arranged along the optical axis direction of the lens module, and the first memory alloy wires can drive the lens module to move along the vertical direction perpendicular to the optical axis.

2. The lens assembly of claim 1, wherein the body portion comprises an upper housing and a base, a receiving cavity is formed between the upper housing and the base, and the lens module is disposed in the receiving cavity.

3. The lens assembly of claim 1, wherein the first actuator assembly comprises two first actuating bodies, and the two first actuating bodies are symmetrically arranged at two ends of the first memory alloy wire relative to the first memory alloy wire.

4. The lens assembly of claim 1, further comprising a second actuator assembly, the second actuator assembly comprising a second memory alloy wire and a second actuating body; the second actuating body comprises a third connecting rod and a fourth connecting rod, one end of the third connecting rod is connected with the main body part, and the other end of the fourth connecting rod is connected with the lens module; the end part of the second memory alloy wire is connected with the joint of the third connecting rod and the fourth connecting rod; the second actuator assembly is arranged at the top or the bottom of the lens module, and the second memory alloy wire is arranged along the optical axis direction and can drive the lens module to move along the left and right directions perpendicular to the optical axis.

5. The lens assembly of claim 4, wherein the second actuator assemblies are provided in a plurality of sets, and the plurality of sets of second actuator assemblies are respectively provided on two sides of the optical axis and are the third link or the fourth link on a side close to the optical axis.

6. The lens assembly of claim 4, wherein the second actuator assembly comprises two second actuating bodies therein, and the two second actuating bodies are symmetrically arranged at two ends of the second memory alloy wire with respect to the second memory alloy wire.

7. The lens assembly of claim 4, wherein the body portion further comprises a retaining plate, and the body portion is coupled to the second actuator assembly via the retaining plate.

8. The lens assembly of claim 1, further comprising a third actuator assembly, wherein the third actuator assembly comprises a third memory alloy wire and a third actuating body; the third actuating body comprises a fifth connecting rod and a sixth connecting rod, one end of the fifth connecting rod is connected with the fifth connecting rod, the other end of the fifth connecting rod is connected with the main body part, and the other end of the sixth connecting rod is connected with the lens module; the end part of the third memory alloy wire is connected with the joint of the fifth connecting rod and the sixth connecting rod; the third actuator assembly is disposed at the top or bottom of the lens module, and the third memory alloy wire is disposed in a direction perpendicular to the optical axis.

9. The lens assembly of claim 8, wherein the third actuator assembly is provided in a plurality of sets, the plurality of sets being disposed along the optical axis direction.

10. The lens assembly of claim 8, wherein the third actuator assembly comprises two third actuating bodies, and the two third actuating bodies are symmetrically arranged at two ends of the third memory alloy wire relative to the third memory alloy wire.

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