CN214252695U

CN214252695U - Lens module and camera equipment with same

Info

Publication number: CN214252695U
Application number: CN202120102001.2U
Authority: CN
Inventors: 夏念明; 陈洪; 刘述伦
Original assignee: Guangdong Haideya Technology Co ltd
Current assignee: Guangdong Haideya Technology Co ltd
Priority date: 2021-01-14
Filing date: 2021-01-14
Publication date: 2021-09-21
Anticipated expiration: 2031-01-14

Abstract

The invention discloses a lens module and camera equipment with the same, wherein the lens module comprises a lens cone, a movable part and a driving assembly, and an accommodating space is arranged in the lens cone; the movable part is used for bearing an image sensor, and the part of the movable part for bearing the image sensor is positioned below the accommodating space; the driving assembly comprises an elastic arm and a memory alloy wire, the elastic arm comprises a fixed end and a free end, the free end is abutted to the movable part, one end of the memory alloy wire is fixedly arranged, the other end of the memory alloy wire is connected with the elastic arm, and the memory alloy wire is electrified and contracted to drive the elastic arm to rotate so that the free end drives the movable part to move. The lens module provided by the embodiment of the invention has the advantages of low cost, simple structure and small occupied space, and is beneficial to reducing the volume of the camera equipment.

Description

Lens module and camera equipment with same

Technical Field

The invention relates to the technical field of camera shooting, in particular to a lens module and camera shooting equipment with the same.

Background

With the rapid development of multimedia technology, digital cameras, video cameras, tablet computers and mobile phones with cameras are more and more favored by consumers, and in the digital cameras, video cameras, mobile phone cameras and other photographic devices, the lens module is an indispensable component. A camera module generally includes a lens barrel, a lens mount, a lens, and an image sensor. The lens is accommodated in the lens barrel, and the image sensor is arranged on the lens base.

In the conventional focusing lens module, a driving motor or a voice coil motor is used to drive a lens barrel or a lens base to displace, so that the distance between the lens barrel and the lens base of the lens module is changed to realize focusing or anti-shake. However, the lens module is not only costly, but also has a large volume and a complicated structure due to the presence of the driving motor or the voice coil motor, and cannot meet the requirements of people for the lightness, thinness, shortness and shortness of the camera module. Therefore, it is desirable to provide a lens module with low cost, simple structure and small space occupation.

Disclosure of Invention

The invention aims to at least solve one of the technical problems in the prior art, and therefore the invention provides a lens module which is low in cost, simple in structure, small in occupied space and beneficial to reduction of the volume of camera equipment.

The invention also provides a camera device with the lens module.

The lens module according to the embodiment of the first aspect of the invention comprises a lens barrel, a movable part and a driving assembly, wherein an accommodating space is arranged in the lens barrel; the movable part is used for bearing an image sensor, and the part of the movable part for bearing the image sensor is positioned below the accommodating space; the driving assembly comprises an elastic arm and a memory alloy wire, the elastic arm comprises a fixed end and a free end, the free end is abutted to the movable part, one end of the memory alloy wire is fixedly arranged, the other end of the memory alloy wire is connected with the elastic arm, and the memory alloy wire is electrified and contracted to drive the elastic arm to rotate so that the free end drives the movable part to move.

According to the lens module provided by the embodiment of the invention, at least the following technical effects can be achieved by the arrangement: be provided with accommodation space in the lens cone, can be used for placing the lens subassembly, the movable part is used for bearing image sensor to the part that is used for bearing image sensor is located the accommodation space below, makes image sensor can be located the bottom of lens subassembly, thereby drives the movable part through drive assembly and removes the distance that can adjust between image sensor and the lens subassembly and realize focusing or anti-shake. The driving force required by the lens module is smaller and the driving is more convenient by driving the image sensor to move instead of driving the lens assembly to move. Meanwhile, the size of the image sensor is small, so that the space reserved for the image sensor by the lens module is small, and the thickness of the lens module in the axial direction can be saved. Meanwhile, the driving assembly comprises an elastic arm and a memory alloy wire, the free end of the elastic arm drives the movable part by driving the memory alloy wire to be electrified and contracted, the volume of the lens module can be further reduced by driving the memory alloy wire, and a lever effect can be formed by connecting the memory alloy wire and the elastic arm, so that the driving force can be further amplified, and the driving is easier.

According to some embodiments of the present invention, the movable portion includes a side plate and a bearing plate, the side plate is disposed on a side surface of the lens barrel, the bearing plate is connected to the side plate and located at a bottom of the accommodating space, and the bearing plate is used for bearing the image sensor.

According to some embodiments of the invention, the side plate is provided with an abutting block, the free end of the elastic arm abuts against the abutting block, and the driving component drives the movable portion to move by driving the abutting block.

According to some embodiments of the invention, the resilient arm comprises a first resilient arm and a second resilient arm, a free end of the first resilient arm abutting a top of the abutment block, and a free end of the second resilient arm abutting a bottom of the abutment block.

According to some embodiments of the present invention, the side plate and the side wall of the lens barrel are provided with sliding grooves which are oppositely arranged, the sliding grooves are enclosed to form a sliding way, and balls and/or rollers are arranged in the sliding way.

According to some embodiments of the present invention, the lens barrel further comprises a bearing, the bearing is disposed between the barrel sidewall and the side plate, and the side plate abuts against the barrel sidewall through the bearing.

According to some embodiments of the present invention, a magnetic member is embedded in the side plate and the side wall of the lens barrel, and the side plate and the side wall of the lens barrel are abutted by a magnetic force of the magnetic member.

According to some embodiments of the present invention, the elastic arm further includes a bending portion, and the elastic arm is connected to the fixing end through the bending portion; one end of the memory alloy wire connected with the elastic arm is located between the bending part and the free end, and the elastic arm bends through the bending part to enable the free end to move so as to drive the movable part.

According to some embodiments of the invention, the distance from the end of the memory alloy wire connected to the elastic arm to the bent portion is smaller than the distance from the end to the free end.

An image pickup apparatus according to an embodiment of a second aspect of the present invention includes the lens module according to the above-described embodiment of the first aspect of the present invention.

According to the image pickup apparatus of the embodiment of the present invention, at least the following advantageous effects are obtained: through adopting foretell lens module, effectively reduced camera equipment's volume to with low costs, simple structure.

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 appearance structure of a lens module according to an embodiment of the invention;

FIG. 2 is a schematic diagram of an internal structure of a lens module according to an embodiment of the invention;

FIG. 3 is a schematic view of a driving assembly of a lens module according to an embodiment of the invention;

FIG. 4 is a top view of an internal structure of a first embodiment of a lens module according to the present invention;

FIG. 5 is a top view of an internal structure of a lens module according to a second embodiment of the present invention;

fig. 6 is a schematic view of an overall structure of a lens module according to an embodiment of the invention.

Reference numerals:

lens barrel 100, lens assembly 110, slide groove 120, ball 130, bearing 140,

A movable part 200, a side plate 210, an abutting block 211, a bearing plate 220,

The elastic arm 310, the first elastic arm 310a, the second elastic arm 320b, the fixed end 311, the free end 312, the bent portion 313, the memory alloy wire 320, the flexible circuit board 400, the baffle 500, and the housing 600.

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 or similar 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 accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, 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, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, 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 otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

A lens module, i.e., an image pickup apparatus according to an embodiment of the present invention is described below with reference to fig. 1 to 6.

For example, as shown in fig. 2, 3 and 6, a lens module according to an embodiment of the present invention includes a lens barrel 100, a movable portion 200 and a driving assembly, wherein an accommodating space is provided in the lens barrel 100; the movable part 200 is used for bearing the image sensor, and the part of the movable part 200 for bearing the image sensor is positioned below the accommodating space; the driving assembly comprises an elastic arm 310 and a memory alloy wire 320, the elastic arm 310 comprises a fixed end 311 and a free end 312, the free end 312 is abutted against the movable part 200, one end of the memory alloy wire 320 is fixedly arranged, the other end of the memory alloy wire is connected with the elastic arm 310, and the memory alloy wire 320 is electrified and contracted to drive the elastic arm 310 to rotate so that the free end 312 drives the movable part 200 to move.

For example, as shown in fig. 2, 3 and 6, the lens module includes a lens barrel 100, a movable portion 200 and a driving assembly, and a receiving space is provided in the lens barrel 100, and the receiving space can be used for placing the lens assembly 110, for example, as shown in fig. 2 and 4. The movable portion 200 is used for carrying the image sensor, and a portion of the movable portion 200 for carrying the image sensor is located below the accommodating space, as shown in fig. 6, for example. By such an arrangement, the image sensor can be located at the bottom of the lens assembly 110, and can receive the image signal transmitted by the lens assembly 110. The movable portion 200 can be driven to move by the driving of the driving assembly, and the movable portion 200 drives the image sensor to move so as to adjust the position relationship between the image sensor and the lens assembly 110 to realize the lens focusing or anti-shake function. Because the image sensor is small in size and light in weight, focusing or anti-shaking is realized by moving the image sensor instead of driving the lens assembly 110, the requirement on the driving force can be reduced, and the space reserved for the image sensor by the lens module is small, so that the thickness of the lens module in the axial direction can be saved.

The driving assembly comprises an elastic arm 310 and a memory alloy wire 320, the elastic arm 310 comprises a fixed end 311 and a free end 312, the free end 312 is abutted against the movable part 200, one end of the memory alloy wire 320 is fixedly arranged, the other end of the memory alloy wire is connected with the elastic arm 310, and the memory alloy wire 320 is electrified and contracted to drive the elastic arm 310 to rotate so that the free end 312 drives the movable part 200 to move.

For example, as shown in fig. 2 and 3, the driving assembly includes a flexible arm 310 and a memory alloy wire 320, the flexible arm 310 includes a fixed end 311 and a free end 312, the fixed end 311 is fixedly disposed, and the free end 312 abuts against the movable portion 200, such as the abutting block 211 of the movable portion 200. One end of the memory alloy wire 320 is fixedly disposed, and the other end is connected to the elastic arm 310, when the memory alloy wire 320 is electrified and contracted, the memory alloy wire 320 can pull the elastic arm 310 to rotate, so that the free end 312 of the elastic arm 310 pushes the movable portion 200 to move, thereby adjusting the position relationship between the image sensor and the lens assembly 110, and achieving focusing or anti-shake. For example, the elastic arm 310 drives the movable portion 200 to move up so that the image sensor and the lens assembly 110 approach each other to achieve focusing. It will be readily appreciated that the memory alloy wire 320 is attached to the middle of the spring arm 310 and acts as a lever to amplify the stroke, i.e., the free end 312 of the spring arm 310 moves a greater distance than the memory alloy wire 320 contracts, and the amount of stroke amplification can be varied depending on where the memory alloy wire 320 is attached to the spring arm 310.

According to the lens module provided by the embodiment of the invention, at least the following beneficial effects can be achieved by the arrangement: the distance between the image sensor and the lens assembly 110 can be adjusted by driving the movable portion 200 to move through the driving assembly, so as to achieve focusing or anti-shake. By driving the image sensor to move instead of driving the lens assembly 110 to move, the driving force required for the lens module is smaller and the driving is more convenient. Meanwhile, the size of the image sensor is small, so that the space reserved for the image sensor by the lens module is small, and the thickness of the lens module in the axial direction can be saved. Meanwhile, the driving assembly comprises an elastic arm 310 and a memory alloy wire 320, the free end 312 of the elastic arm 310 drives the movable part 200 by driving the memory alloy wire 320 to be electrified and contracted, the volume of the lens module can be further reduced by driving through the memory alloy wire 320, and the lever effect can be formed by the connection of the memory alloy wire 320 and the elastic arm 310, so that the driving force can be further amplified, and the driving is easier.

In some embodiments of the invention, the movable portion 200 includes a side plate 210 and a bearing plate 220, the side plate 210 is disposed on a side surface of the lens barrel 100, the bearing plate 220 is connected to the side plate 210 and located at a bottom of the accommodating space, and the bearing plate 220 is used for bearing the image sensor.

For example, as shown in fig. 3 and 6, the movable portion 200 includes a side plate 210 and a bearing plate 220, the side plate 210 is disposed at a side of the lens, and is in contact with the driving assembly, and is driven by the driving assembly so that the movable portion 200 can drive the image sensor to move. The carrying plate 220 is connected to the side plate 210 and located at the bottom of the accommodating space, the carrying plate 220 is used for carrying an image sensor, and the carrying plate 220 is located at the bottom of the accommodating space, so that the image sensor is located below the lens assembly 110 and can be used for receiving an image signal transmitted by the lens assembly 110.

The movable portion 200 includes a side plate 210 and a bearing plate 220, the side plate 210 and the bearing plate 220 are connected to each other in a T-shape, the bearing plate 220 bears an image sensor, the side plate 210 is driven by a driving assembly to move so as to drive the bearing plate 220 to drive the image sensor to move, and therefore the position relationship between the image sensor and the lens assembly 110 is adjusted to realize focusing or anti-shaking functions.

In some embodiments of the present invention, the side plate 210 is provided with an abutting block 211, the free end 312 of the elastic arm 310 abuts against the abutting block 211, and the driving assembly drives the movable portion 200 to move by driving the abutting block 211.

For example, as shown in fig. 3 and fig. 6, the side plate 210 is provided with an abutting block 211, the free end 312 of the elastic arm 310 abuts against the abutting block 211, and the driving assembly drives the side plate 210 to move by driving the abutting block 211, so as to drive the whole movable portion 200 to move. The driving assembly is installed on the outer side wall of the lens, the bearing plate 220 is disposed in the accommodating space inside the lens barrel 100, and a notch is formed in the side wall of the lens barrel 100, so that the abutting block 211 of the movable portion 200 can extend out of the notch to abut against the free end 312 of the elastic arm 310 of the driving assembly.

In some embodiments of the present invention, the elastic arm 310 includes a first elastic arm 310a and a second elastic arm 310b, the free end 312 of the first elastic arm 310a abuts against the top of the abutting block 211, and the free end 312 of the second elastic arm 310b abuts against the bottom of the abutting block 211.

For example, as shown in fig. 2 and 3, the elastic arm 310 includes a first elastic arm 310a and a second elastic arm 310b, a free end 312 of the first elastic arm 310a abuts against a top of the abutment block 211 so that the driving assembly can drive the movable portion 200 downward, and a free end 312 of the second elastic arm 310b abuts against a bottom of the abutment block 211 so that the driving assembly can drive the movable portion 200 upward.

Through the arrangement of the first elastic arm 310a and the second elastic arm 310b, the driving assembly can drive the movable portion 200 to move up and down, so that the image sensor can approach or move away from the lens assembly 110 to achieve the focusing function.

In some embodiments of the present invention, the side plate 210 and the side wall of the lens barrel 100 are provided with opposite sliding grooves 120, the sliding grooves 120 enclose to form a sliding track, and the sliding track is provided with balls 130 and/or rollers.

For example, as shown in fig. 4, the side plate 210 and the side wall of the lens barrel 100 are provided with the sliding grooves 120 which are oppositely arranged, the sliding grooves 120 are enclosed to form a sliding way, and the sliding way is provided with the balls 130 and/or the rollers, so that the mutual movement between the movable portion 200 and the lens is changed from static friction to dynamic friction, the friction force can be effectively reduced, the movable portion 200 is easier to drive and is less prone to wear, and the service life and the precision are increased. And the arrangement of the slide way, the balls 130 and the rollers provides a guide for the movement of the movable part 200, which limits the direction of the movement of the movable part 200, so that the movement of the movable part 200 can be more accurately and easily controlled.

More closely, can also set up baffle 500 on the lens module, baffle 500 sets up in the slide top, prevents that ball 130 or roller from following the slide roll-off, and baffle 500 can carry out certain limiting action to the removal of movable part 200 simultaneously, prevents that the displacement of movable part 200 is too big, plays certain limiting action.

In some embodiments of the present invention, the lens barrel further includes a bearing 140, the bearing 140 is disposed between the side wall of the lens barrel 100 and the side plate 210, and the side plate 210 abuts against the side wall of the lens barrel 100 through the bearing 140.

For example, as shown in fig. 5, the lens module further includes a bearing 140, the bearing 140 is disposed between the side wall of the lens barrel 100 and the side plate 210, the side plate 210 is abutted against the side wall of the lens barrel 100 through the bearing 140, and the bearing 140 may be a flat rolling bearing 140.

Through the setting of bearing 140 for the mutual displacement between curb plate 210 and the camera lens lateral wall becomes the kinetic friction by the static friction, can effectively reduce frictional force, makes movable part 200 drive more easily, and the setting of bearing 140 is simpler, need not process again to the lens barrel 100 or curb plate 210 and offers spout 120. And the width of the bearing 140 is smaller, the distance between the side wall of the lens barrel 100 and the side plate 210 is not increased, the volume of the image pickup apparatus is not increased, and the cost is further reduced.

The embodiment of the present invention shown in fig. 4 provides an embodiment of opening a sliding way 120, and using the balls 130 and/or the balls 130 to change the mutual movement between the side plate 210 and the side wall of the lens barrel 100 from static friction to dynamic friction, and fig. 5 provides an embodiment of arranging the bearings 140 between the side plate 210 and the side wall of the lens barrel 100 to change the mutual movement between the side plate 210 and the side wall of the lens barrel 100 from static friction to dynamic friction, and in both embodiments, two rows of sliding ways and two rows of bearings 140 are provided, and in fact, the two ways may be used alternatively or simultaneously, and both ways are within the protection scope of the present invention. I.e., a manner of using both the ball 130 and the bearing 140 in the slide way, a manner of using the ball 130 and/or the ball 130 in the slide way on one side of the side plate 210 and using the bearing 140 on the other side. Through the arrangement mode, the cost can be reduced, the structure is simplified, and a moving track is provided for the mutual movement between the side plate 210 and the side wall of the lens, so that the movable part 200 has a certain moving track, the movement is more accurate, and the control is more convenient.

In some embodiments of the present invention, magnetic members are embedded in the side plates 210 and the side walls of the lens barrel 100, and the side plates 210 and the side walls of the lens barrel 100 are abutted by magnetic force of the magnetic members.

Magnetic members are embedded in the side plates 210 and the side walls of the lens barrel 100, the side plates 210 and the side walls of the lens barrel 100 can be abutted against each other by the magnetic force of the magnetic members, and then the side plates 210 and the side walls of the lens barrel 100 can move relative to each other by the balls 130, the balls 130 or the bearings 140.

The side plate 210 is tightly attached to the side wall of the lens barrel 100 by the magnetic force of the magnetic member, and the driving assembly is mounted on the outer side wall of the lens barrel 100, so that the driving assembly can conveniently drive the movable portion 200, thereby adjusting the position relationship between the image sensor and the lens assembly 110, and realizing focusing or anti-shaking.

In some embodiments of the present invention, the elastic arm 310 further includes a bending portion 313, and the elastic arm 310 is connected to the fixed end 311 through the bending portion 313; one end of the memory alloy wire 320 connected to the elastic arm 310 is located between the bending part 313 and the free end 312, and the elastic arm 310 bends through the bending part 313 to move the free end 312 to drive the movable part 200.

For example, as shown in fig. 2 and fig. 3, the elastic arm 310 further includes a bending portion 313, the elastic arm 310 is connected to the fixed end 311 through the bending portion 313, one end of the memory alloy wire 320 connected to the elastic arm 310 is located between the bending portion 313 and the free end 312, and the elastic arm 310 bends through the bending portion 313 to move the free end 312, so as to drive the abutting block 211 to drive the movable portion 200 to move, thereby adjusting the position of the image sensor. The bent portion 313 of the elastic arm 310 is sheet-shaped and disposed toward the memory alloy wire 320, so that the bent portion 313 is easily bent in a direction in which the memory alloy wire 320 is stretched, and the elastic arm 310 is easily bent.

When the memory alloy wire 320 is electrified and contracted, the memory alloy wire 320 can pull the free end 312 of the elastic arm 310 to bend around the bending part 313 to drive the movable part 200 upwards or downwards.

In some embodiments of the present invention, the distance from the end of the memory alloy wire 320 connected to the elastic arm 310 to the bent portion 313 is smaller than the distance to the free end 312.

For example, as shown in fig. 2 and 3, the distance from the end of the memory alloy wire 320 connected with the elastic arm 310 to the bent part 313 is smaller than the distance from the end of the memory alloy wire 320 to the free end 312, so that the driving stroke of the memory alloy wire 320 can be further enlarged, the distance from the end of the memory alloy wire 320 connected with the elastic arm 310 to the bent part 313 is smaller than the distance from the end of the memory alloy wire 320 to the free end 312, a lever effect can be formed, the stroke of the memory alloy wire 320 can be enlarged to more than two times, and the driving of the movable part 200 is facilitated.

According to the camera shooting device provided by the embodiment of the invention, the volume of the device is reduced by adopting the lens module, the cost is lower, and the structure is simple. Furthermore, the image capturing apparatus further includes a flexible circuit board 400, for example, as shown in fig. 2, 5 and 6, the flexible circuit board 400 is connected to the image sensor and a main board of the image capturing apparatus, and converts information collected by the image sensor into an electrical signal to be transmitted to the main board of the image capturing apparatus. Furthermore, the part that flexible circuit board 400 is connected with image sensor is the folding setting of Z shape, through so setting up, makes things convenient for movable part 200 to drive image sensor and removes, and when image sensor removed, flexible circuit board 400 was the setting of Z type and makes the part that flexible circuit board 400 is connected with image sensor easily remove with image sensor together, reserves some length for image sensor's removal for flexible circuit board 400 is more stable with image sensor's connection. Further, the image capturing apparatus further includes a housing 600, for example, as shown in fig. 1, the lens module, the lens assembly 110 and the image sensor are all mounted in the housing 600, and the housing 600 protects the lens module, the lens assembly 110 and the image sensor.

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 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 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

1. A lens module, comprising:

a lens barrel (100), wherein an accommodating space is arranged in the lens barrel (100);

a movable part (200), wherein the movable part (200) is used for bearing an image sensor, and the part of the movable part (200) for bearing the image sensor is positioned below the accommodating space;

drive assembly, drive assembly is including elasticity arm (310) and memory alloy line (320), elasticity arm (310) are including stiff end (311) and free end (312), free end (312) with movable part (200) looks butt, memory alloy line (320) one end is fixed to be set up, the other end with elasticity arm (310) are connected, memory alloy line (320) circular telegram shrink drive elasticity arm (310) rotate and make free end (312) drive movable part (200) remove.

2. The lens module as claimed in claim 1, wherein the movable portion (200) includes a side plate (210) and a bearing plate (220), the side plate (210) is disposed at a side of the lens barrel (100), the bearing plate (220) is connected to the side plate (210) and located at a bottom of the accommodating space, and the bearing plate (220) is used for bearing the image sensor.

3. The lens module as claimed in claim 2, wherein the side plate (210) is provided with a contact block (211), a free end (312) of the elastic arm (310) contacts the contact block (211), and the driving assembly drives the movable portion (200) to move by driving the contact block (211).

4. The lens module as claimed in claim 3, wherein the resilient arm (310) comprises a first resilient arm (310a) and a second resilient arm (310b), a free end (312) of the first resilient arm (310a) abuts against a top of the abutting block (211), and a free end (312) of the second resilient arm (310b) abuts against a bottom of the abutting block (211).

5. The lens module as claimed in claim 2, wherein the side plate (210) and the side wall of the lens barrel (100) are provided with oppositely arranged sliding grooves (120), the sliding grooves (120) are enclosed to form a slideway, and the slideway is provided with balls (130) and/or rollers.

6. The lens module as claimed in claim 2, further comprising a bearing (140), wherein the bearing (140) is disposed between the side wall of the lens barrel (100) and the side plate (210), and the side plate (210) abuts against the side wall of the lens barrel (100) through the bearing (140).

7. The lens module as claimed in claim 2, wherein a magnetic member is embedded in the side plate (210) and the side wall of the lens barrel (100), and the side plate (210) and the side wall of the lens barrel (100) are abutted by the magnetic force of the magnetic member.

8. The lens module as claimed in claim 1, wherein the resilient arm (310) further comprises a bending portion (313), and the resilient arm (310) is connected to the fixed end (311) through the bending portion (313); one end of the memory alloy wire (320) connected with the elastic arm (310) is located between the bent part (313) and the free end (312), and the elastic arm (310) is bent through the bent part (313) to enable the free end (312) to move so as to drive the movable part (200).

9. The lens module as claimed in claim 8, wherein a distance from an end of the memory alloy wire (320) connected to the elastic arm (310) to the bent portion (313) is smaller than a distance from the free end (312).

10. An image pickup apparatus characterized by comprising the lens module according to any one of claims 1 to 9.