CN108227107B

CN108227107B - Lens assembly and photographic device using same

Info

Publication number: CN108227107B
Application number: CN201710883065.9A
Authority: CN
Inventors: 吴富源; 陈怡和
Original assignee: TDK Taiwan Corp
Current assignee: TDK Taiwan Corp
Priority date: 2016-12-12
Filing date: 2017-09-26
Publication date: 2022-01-18
Anticipated expiration: 2037-09-26
Also published as: TWI647502B; CN108227107A; TW201821847A; CN207336892U

Abstract

The invention provides a lens assembly and a photographing device using the lens assembly. The lens assembly includes a lens holder, a lens and a clamping part. The lens holder includes a front cover and a side cover extending from the edge of the front cover. An opening is defined in the front cover. The lens is arranged on the lens holder so that the optical axis of the lens is aligned with the opening. The engaging portion protrudes outward from the side cover, and the projection of the engaging portion in a direction parallel to the optical axis is located on the lens.

Description

Lens assembly and photographic device using same

Technical Field

The present invention relates to a lens assembly and a photographing apparatus using the same, and more particularly, to a lens assembly having a small size and a photographing apparatus using the same.

Background

With the development of technology, camera technology is continuously enhanced and the price is reduced, and the photographing function has become the basic function of portable electronic products, so that various portable electronic products such as mobile phones, Personal Digital Assistants (PDAs), notebook computers, tablet computers and the like are generally equipped with a small-scale camera for users to take images of daily life.

Generally, a small-scale camera includes an image sensor and a lens assembly. The image sensor is, for example, a Charge Coupled Device (CCD) or a Complementary Metal Oxide Semiconductor (CMOS) sensor.

The lens assembly comprises a lens barrel and a lens base, wherein the thread part is arranged on the lens barrel and the lens base. In the process of assembling the lens cone and the lens base through the thread part, the position of the lens cone relative to the lens base can be adjusted through the rotation of the lens cone, so that an image is projected onto an image plane of the image sensor. The screw portion inevitably increases the volume of the lens assembly and reduces portability, which is not in line with the trend of light weight and thin profile of electronic devices. Therefore, a lens module overcoming the structural limitations of the prior art is needed.

On the other hand, japanese patent laid-open No. 2012-256040 discloses a lens module in which a lens is coupled to a lens holder by an adhesive. Such a combination method has a weak structural strength, and due to the limitation of assembly, the lens may be tilted relative to the lens holder, which is not favorable for improving the image quality.

Disclosure of Invention

It is a primary objective of the present invention to provide a miniaturized lens assembly, which includes a locking portion for engaging with a corresponding groove on a lens holder. The clamping part is arranged under the condition of not influencing the set optical efficacy of the lens component, and has smaller volume and lighter weight compared with the traditional lens component without a thread structure.

Another object of the present invention is to provide a photographing apparatus using the miniaturized lens assembly to have a smaller volume and a lighter weight.

According to some embodiments of the present invention, the lens assembly includes a lens holder, a lens and a locking portion. The lens clamping piece comprises a front cover and a side cover extending out from the edge of the front cover. An opening is defined in the front cover. The lens is arranged on the lens clamping piece, so that the optical axis of the lens is aligned with the opening. The clamping part protrudes outwards from the side cover, and the projection of the clamping part in the direction parallel to the optical axis is positioned on the lens.

In the above embodiment, the engaging portion is closer to the light incident surface of the lens assembly than the lens, and the engaging portion is adjacent to the front cover. Or, the clamping part is far away from the light incident surface of the lens component compared with the lens.

In the above embodiments, the side cover includes a first annular portion, a connecting portion and a second annular portion. The connecting part is connected with one side of the first annular part close to the front cover. The second annular part is connected with the first annular part through the connecting part. The width of the second annular part is smaller than that of the first annular part in the direction perpendicular to the optical axis. The clamping part is arranged on the second annular part and is separated from the connecting part by a distance.

Alternatively, the side cover includes a first annular portion, a connecting portion and a second annular portion. The connecting part is connected with one side of the first annular part far away from the front cover. The second annular part is connected with the first annular part through the connecting part, wherein the width of the second annular part is smaller than that of the first annular part in the direction vertical to the optical axis. The clamping part is arranged on the second annular part and is separated from the connecting part by a distance.

In the above embodiment, the lens assembly includes a plurality of fastening portions, and the fastening portions are circumferentially disposed at intervals on the side cover.

In the above embodiment, the projection of the engaging portion in the direction parallel to the optical axis is located on the optically effective surface of the lens.

Another object of the present invention is to provide an image capturing apparatus. The camera device includes the lens assembly and an image sensor according to any of the above embodiments. The image sensing element is arranged along the optical axis of the lens and is configured to receive the light passing through the lens.

In the above embodiment, the photographing device further includes a lens holder, a driving coil and a driving magnet. The lens base comprises a body arranged around the side cover and a convex structure formed on the inner wall surface of the body. The clamping part is abutted against the convex structure so as to fix the lens component on the lens base. The driving coil is arranged on the body of the microscope base, and the driving magnet is arranged opposite to the driving coil.

The lens assembly and the photographic device applying the lens assembly provided by the invention have the advantages and beneficial effects that: the clamping part is arranged under the condition of not influencing the established optical efficacy of the lens component, and has smaller volume and lighter weight compared with the traditional lens component without a thread structure.

Drawings

The disclosure is fully disclosed in the following detailed description in conjunction with the accompanying drawings. It should be noted that in accordance with the general practice of the industry, the drawings are not necessarily drawn to scale. In fact, the dimensions of the elements may be arbitrarily increased or reduced for clarity of illustration.

Fig. 1 is an exploded view of a structure of a photographing apparatus according to a part of an embodiment of the present invention.

Fig. 2 is a partial structural schematic diagram of a lens holder according to a partial embodiment of the invention.

Fig. 3A is a perspective view of a lens assembly according to some embodiments of the invention.

Fig. 3B is a side view of a lens assembly according to some embodiments of the invention.

Fig. 4 is a cross-sectional schematic view of a lens assembly according to some embodiments of the invention.

Fig. 5 is a schematic view illustrating an assembly method of a lens assembly and a lens holder according to some embodiments of the invention, wherein the engaging portion is not coupled to the protruding structure.

Fig. 6 is a schematic view illustrating an assembly method of a lens assembly and a lens holder according to some embodiments of the invention, wherein the engaging portion is engaged with the protrusion structure.

Fig. 7A is a perspective view of a lens assembly according to some embodiments of the invention.

Fig. 7B is a side view of a lens assembly according to some embodiments of the invention.

Fig. 8 is a cross-sectional schematic view of a lens assembly according to some embodiments of the invention.

Fig. 9A is a perspective view of a lens assembly according to some embodiments of the invention.

Fig. 9B is a side view of a lens assembly according to some embodiments of the invention.

Fig. 10 is a cross-sectional schematic view of a lens assembly according to some embodiments of the invention.

Description of reference numerals:

1-lens driving module

2-electromagnetic drive assembly

3. 3a, 3 b-lens assembly

5-Circuit Board

7-light sensing element

10-shell

101-upper casing part

102-side housing

12 to the base

14-Circuit Board

16-coil substrate

162-OIS drive coil

164-OIS drive coil

166-concave

20-frame body

201-side frame body

202-containing groove

22-upper spring plate

24-lower spring plate

26-mirror base

261 to main body

2611-inner side wall

2612 to lower edge

2613 to upper edge

263-convex structure

2631 to first part

2632 to the second part

265-channel

28-drive coil

29 magnetic element

31. 31 b-lens holder

32-front cover

33. 33 b-side cover

331 to annular portion (first annular portion) (second annular portion)

332 to connecting part

333 annular portion (first annular portion) (second annular portion)

334 to connecting part

335 annular portion (second annular portion) (third annular portion)

336-connecting part

337 annular portion (second annular portion)

34 lens unit

341. 342, 343, 344. lens

36. 36a, 36b to engaging part

40-lifting ring line

a-arrow head

H1-height

H2-height

Distance D1-

Distance D2-

R1-line segment

O-optical axis

Detailed Description

Reference will now be made in detail to the present preferred embodiments, examples of which are illustrated in the accompanying drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as possible, and will be fully understood by those skilled in the art.

It is to be understood that the elements specifically described and illustrated in the figures may exist in various forms well known to those skilled in the art. When an element is "on" another element or a substrate, it may be directly on the other element or the substrate, or may be sandwiched between the other elements or the substrates.

Furthermore, relative terms, such as "lower" or "bottom" and "upper" or "top," may be used in embodiments to describe one element's relative relationship to another element of the figures. It will be understood that if the device of the drawings is turned over and upside down, elements described as being on the "lower" side will be elements on the "upper" side.

As used herein, terms such as "about", "about" and the like generally mean within 20%, preferably within 10%, and more preferably within 5% of a given value or range. The amounts given herein are approximate, meaning that the meaning of "about" or "approximately" may still be implied without particular recitation.

Fig. 1 is an exploded view of a structure of a photographing device 1 according to a part of the embodiment of the present invention. The photographing device 1 includes an electromagnetic driving assembly 2, a lens assembly 3, a main circuit board 5 and an image sensing device 7. The electromagnetic drive assembly 2 is configured to carry the lens assembly 3 and control displacement of the lens assembly 3. The image sensor 7 is disposed on the main circuit board 5 and faces the last lens of the lens assembly 3. The image sensor 7 may include an image sensor composed of a photosensitive device such as a Charge Coupled Device (CCD) or a Complementary Metal Oxide Semiconductor (CMOS). When the image capturing device 1 captures an image, the light travels along the optical axis O of the lens assembly 3 and then is emitted to the image sensor 7. The image sensor 7 emits an electronic signal to generate an image after sensing the light.

The structural features of the electromagnetic drive assembly 2 according to some embodiments of the present invention are described below.

Referring to fig. 1, in some embodiments, the electromagnetic driving assembly 2 includes a housing 10, a base 12, a circuit board 14, a coil substrate 16, a frame 20, an upper spring 22, a lower spring 24, a carrier 26, a focus driving coil 28, a plurality of magnetic elements (e.g., four magnetic elements 29), and a plurality of suspension loops (e.g., four suspension loops 40) on an optical axis O. The number of components of the electromagnetic driving assembly 2 can be increased or decreased according to the requirement, and is not limited to this embodiment.

The housing 10 includes an upper housing 101 and a side housing 102. The upper case member 101 has a rectangular shape, and the side case member 102 extends from the edge of the upper case member 101 toward the base 12 and is coupled to the base 12. The housing 10 and the base 12 define an inner space for accommodating the rest of the components of the electromagnetic driving assembly 2.

The circuit board 14 is disposed on the base 12 and configured to electrically connect a control module (not shown) and internal electronic components of the electromagnetic driving module 2. The coil substrate 16 is disposed on the circuit board 14 and includes a plurality of OIS driving coils, such as: two OIS (optical image stabilization) drive coils 162 and two OIS drive coils 164.

The frame 20 includes four side frame members 201 connected in sequence around the optical axis O, and each side frame member 201 includes a receiving groove 202 formed thereon. The lens holder 26 is surrounded by the frame body 20. The upper spring plate 22 and the lower spring plate 24 are respectively disposed on two opposite sides of the frame 20 and the mirror base 26 in a direction parallel to the optical axis O, so that the mirror base 26 can move along a vertical direction (Z direction) relative to the frame 20. Each suspension loop wire 40 is connected between the upper spring plate 22 and the base 12, so that the frame 20 can move relative to the base 12 in a direction perpendicular to the optical axis O.

The driving coil 28 is an annular structure surrounding the outer side of the lens holder 26 and configured to pass a current to generate a magnetic field to move the lens holder 26 relative to the base 12. The four magnetic elements 29 are respectively disposed on the four side frame members 201. The positioning is performed by the frame 20, four magnetic elements 29 are provided corresponding to the focus driving coils 28, and four magnetic elements 29 are provided corresponding to the OIS driving coils 162, 164.

Fig. 2 shows a schematic partial structure diagram of the mirror base 26 according to some embodiments of the present invention. In some embodiments, the lens holder 26 includes an annular body 261 and a plurality of protruding structures (e.g., four protruding structures 263, as shown more clearly in FIG. 1). The four protrusion structures 263 are disposed on the inner sidewall 2611 of the body 261 and each extend a predetermined length in the circumferential direction of the body 261, wherein the four protrusion structures 263 are equally spaced apart, and four channels 265 are defined between two adjacent protrusion structures 263.

In some embodiments, each protruding structure 263 includes a first portion 2631 and a second portion 2632 connected to the first portion 2631. In a direction perpendicular to the optical axis O (fig. 1), the height of the first portion 2631 is greater than the height of the second portion 2633. For example, first portion 2631 has a height H1, second portion 2633 has a height H2, and height H1 is greater than height H2.

Also, in a direction perpendicular to the optical axis O, a distance between the top surface of the first portion 2631 and the upper edge 2613 of the body 261 is smaller than a distance between the top surface of the second portion 2632 and the upper edge 2613 of the body 261. For example, the first portion 2631 is aligned with the upper edge 2613 of the body 261, and the second portion 2632 is spaced apart from the upper edge 2613 of the body 261 by a distance D1. Additionally, the bottom surface of the first portion 2631 is aligned with the bottom surface of the second portion 2632 and is spaced apart from the lower edge 2612 of the body 261.

The structural features of the lens assembly 3 according to some embodiments of the invention are described below.

Fig. 3A shows a perspective view of the lens assembly 3, and fig. 3B shows a side view of the lens assembly 3. In some embodiments, the lens assembly 3 includes a lens holder 31, a lens unit 34, and a plurality of engaging portions (e.g., four engaging portions 36). The lens holder 31 is used for accommodating the lens unit 34 and includes a front cover 32 and a side cover 33. An opening 320 is defined in the center of the front cover 32. The side cover 33 extends from the edge of the front cover 32 in a direction away from the front cover 32.

As shown in fig. 3B, the side cover 33 includes a plurality of annular portions, for example,

annular portions

331, 333, and 335, and a plurality of coupling portions, for example,

coupling portions

332 and 334. The

annular portions

331, 333, and 335 are each disposed around the optical axis O of the lens unit 34 and extend substantially in a direction parallel to the optical axis. For convenience of explanation, in this embodiment, the annular portion 331 is referred to as a "first annular portion", the annular portion 333 is referred to as a "second annular portion", and the annular portion 335 is referred to as a "third annular portion".

In the direction perpendicular to the optical axis O, the width of the first annular portion 331 is larger than the width of the second annular portion 333, and the width of the second annular portion 333 is larger than the width of the third annular portion 331. The connecting portion 332 is connected between the first annular portion 331 and the second annular portion 333, and forms an included angle larger than 0, for example, 90 degrees with the first annular portion 331 and the second annular portion 333. The connecting portion 334 is connected between the second annular portion 333 and the third annular portion 335, and forms an included angle greater than 0, for example, 45 degrees with the second annular portion 333 and the third annular portion 335.

Fig. 4 shows a cross-sectional view of the lens assembly 3 according to some embodiments of the present invention. In some embodiments, the lens unit 34 is disposed in the lens holder 31 and includes a plurality of lenses, such as

lenses

341, 342, 343, and 344, sequentially disposed in a direction away from the front cover 32. The optical axes of the

lenses

341, 342, 343, 344 are respectively disposed through the openings 320 of the front cover 32, and the lenses farther from the front cover 32 have a larger width in the direction perpendicular to the optical axis O.

With reference to fig. 4 and fig. 2, 3A and 3B, the four engaging portions 36 respectively extend from the side cover 33 toward a direction perpendicular to the optical axis O, wherein the four engaging portions 36 are spaced from the front cover 32 by the same distance, and the four engaging portions 36 are circumferentially spaced at equal intervals. In some embodiments, four engaging portions 36 are disposed at positions of the second annular portion 333 closer to the connecting portion 334. In the embodiment shown in fig. 3A and 3B, the four engaging portions 36 are disposed adjacent to the connecting portion 334 and separated from the connecting portion 332 by a distance D2. Spacing D2 may be greater than or equal to height H2 of second portion 2633 of raised structure 263 (FIG. 2).

In some embodiments, the extending length of the four engaging portions 36 in the direction perpendicular to the optical axis O is equal to or less than the difference between the widths of the first annular portion 331 and the second annular portion 333. That is, the ends of the four engaging portions 36 are disposed at positions that do not exceed the extension line segment R1 of the first annular portion 331 in the direction parallel to the optical axis O, as shown in fig. 4.

In some embodiments, the extending length of the four engaging portions 36 in the direction perpendicular to the optical axis O is equal to or less than the thickness of the protruding structure 2633 (fig. 2). In addition, in the direction parallel to the optical axis O, the heights of the four engaging portions 36 are equal to or less than the distance D1 between the second portion 2632 of the protrusion structure 2633 (fig. 2) and the upper edge 2613 of the main body 261.

In some embodiments, at least a portion of the projection of the four engaging portions 36 in the direction parallel to the optical axis O is located on at least one lens of the lens unit 34. For example, in the embodiment shown in fig. 4, the projection of the four engaging portions 36 in the direction parallel to the optical axis O completely falls on the lens 344, and the four engaging portions 36 are closer to the front cover 32 than the lens 344. In some non-limiting embodiments, a portion of the projection of the four engaging portions 36 in the direction parallel to the optical axis O falls on the optically effective surface of the lens 344 (the curved surface of the lens 344).

Referring to fig. 5 and 6, the steps of combining the lens assembly 3 with the lens holder 26 are described as follows. First, the engaging portion 36 of the lens module 3 is inserted into the channel 265 defined between the adjacent protruding structures 263 until the connecting portion 332 of the lens module 3 abuts against the lower side edge 2612 of the protruding structure 263. Next, the lens assembly 3 is rotated in the direction indicated by the arrow a in fig. 5, so that the engaging portion 36 enters between the second portion 2632 of the protruding structure 263 and the upper edge 2613 of the body 261, until the engaging portion 36 abuts against the first portion 2631 of the protruding structure 263, as shown in fig. 6.

In some embodiments, since the distance D2 (fig. 3B) is equal to the height H2 (fig. 2) of the second portion 2633 of the protruding structure 2633, the second portion 2632 of the protruding structure 263 is tightly fitted between the connecting portion 332 and the engaging portion 36, so that the lens assembly 3 is firmly disposed on the lens holder 26.

It should be understood that the present invention is not limited to the above-described embodiments. In other embodiments, the distance D2 (fig. 3B) is greater than the height H2 (fig. 2) of the second portion 2633 of the projection structure 2633. When the engaging portion 36 enters between the second portion 2632 of the protruding structure 263 and the upper edge 2613 of the body 261, a glue may be coated in the channel 265 to limit the movement of the lens assembly 3 relative to the lens holder 26, thereby fixing the lens assembly 3 in position.

Referring to fig. 4, in the above embodiment, the lens assembly 3 is coupled to the lens holder 26 through the engaging portion 36. The distance between the end of the engaging portion 36 and the optical axis O is smaller than half of the maximum width of the lens holder 31 perpendicular to the optical axis O. Thus, the width of the lens block 3 is smaller than that of the lens block in the related art in which the screw part is formed. On the other hand, since the engaging portion 36 is supported by the protruding structure 263, the lens assembly 3 will not tilt relative to the lens holder 26, thereby improving the image quality of the photographing device 1.

It should be understood that the form of the lens assembly 3 of the present invention is not limited to the above-described embodiments, and various exemplary embodiments of the lens assembly of the present invention are set forth below.

Fig. 7A shows a perspective view of the lens assembly 3a, fig. 7B shows a side view of the lens assembly 3a, and fig. 8 shows a cross-sectional schematic view of the lens assembly 3 a. In the embodiments shown in fig. 7A, 7B and 8, the same or similar features as those of the embodiments shown in fig. 3A, 3B and 4 will be given the same reference numerals, and the features will not be described again to simplify the description.

In this embodiment, the lens assembly 3a includes a lens holder 31, a lens unit 34 and a plurality of engaging portions (e.g., four engaging portions 36 a). For convenience of explanation, in this embodiment, the annular portion 333 is referred to as a "first annular portion", and the annular portion 335 is referred to as a "second annular portion".

The four engaging portions 36a extend from the side cover 33 in a direction perpendicular to the optical axis O, wherein the four engaging portions 36a are spaced from the front cover 32 by the same distance, and the four engaging portions 36a are circumferentially spaced at equal intervals. In some embodiments, four engaging portions 36a are disposed on the second annular portion 335 closer to the front cover 32. In the embodiment shown in fig. 7-8, four engaging portions 36a are disposed adjacent to the front cover 32 and are spaced apart from the connecting portions 334.

In some embodiments, the extending length of the four engaging portions 36a in the direction perpendicular to the optical axis O is equal to or less than the difference between the widths of the first annular portion 333 and the second annular portion 335. That is, the ends of the four engaging portions 36a are disposed at positions that do not exceed the extension line segment R2 of the first annular portion 333 in the direction parallel to the optical axis O, as shown in fig. 8.

In some embodiments, at least a portion of the projection of the four engaging portions 36a in the direction parallel to the optical axis O is located on at least one lens of the lens unit 34. For example, in the embodiment shown in fig. 8, the projection of the four engaging portions 36a in the direction parallel to the optical axis O completely falls on the lens 344, wherein the four engaging portions 36a are closer to the front cover 32 than the lens 344. The projection of the four engaging portions 36a in the direction parallel to the optical axis O falls on the lens 343, wherein the four engaging portions 36a are closer to the front cover 32 than the lens 343. In some non-limiting embodiments, a portion of the projection of the four engaging portions 36a in the direction parallel to the optical axis O completely falls on the optically effective surface of the lens 344 (the curved surface of the lens 344).

Fig. 9A shows a perspective view of the lens assembly 3B, fig. 9B shows a side view of the lens assembly 3B, and fig. 10 shows a cross-sectional schematic view of the lens assembly 3B. In the embodiments shown in fig. 9A, 9B, 10, the same or similar features as those of the embodiments shown in fig. 3A, 3B, 4 will be given the same reference numerals, and the features thereof will not be described again to simplify the description.

The lens assembly 3b includes a lens holder 31b, a lens unit 34, and a plurality of engaging portions (e.g., four engaging portions 36 b). The lens holder 31b further includes a connecting portion 336 and an annular portion 337, compared to the lens holder 31. The annular portion 337 is disposed around the optical axis O of the lens unit 34 and extends substantially in a direction parallel to the optical axis. The width of the annular portion 331 is larger than the width of the annular portion 337, and the annular portion 337 is joined to a side of the annular portion 331 away from the front cover 32 by a joining portion 336. The connecting portion 336 and the

annular portion

331 and 337 respectively form an included angle larger than 0, for example, 90 degrees. For convenience of explanation, in this embodiment, the annular portion 331 is referred to as a "first annular portion", and the annular portion 337 is referred to as a "second annular portion".

The four engaging portions 36b extend from the side cover 33b in a direction perpendicular to the optical axis O, wherein the four engaging portions 36b are spaced apart from the front cover 32 by the same distance, and the four engaging portions 36b are circumferentially spaced apart at equal intervals. Specifically, the four engaging portions 36b are provided at positions of the second annular portion 337 distant from the front cover 32. In the embodiment shown in fig. 9-10, four engaging portions 36b are disposed adjacent to one end of the side cover 33b away from the front cover 32 and are spaced apart from the connecting portion 336.

In some embodiments, the extending length of the four engaging portions 36b in the direction perpendicular to the optical axis O is equal to or less than the difference between the widths of the first annular portion 331 and the second annular portion 337. That is, the ends of the four engaging portions 36b are disposed at positions that do not exceed the extension line segment R3 of the first annular portion 331 in the direction parallel to the optical axis O, as shown in fig. 10.

In some embodiments, at least a portion of the projection of the four engaging portions 36b in the direction parallel to the optical axis O is located on at least one lens of the lens unit 34. For example, in the embodiment shown in fig. 10, the projection portions of the four engaging portions 36b in the direction parallel to the optical axis O fall on the lens 344, wherein the four engaging portions 36b are farther from the front cover 32 than the lens 344.

Although the present invention has been described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A photographing apparatus, characterized by comprising:

a lens holding member including a front cover and a side cover extending from an edge of the front cover, wherein an opening is defined in the front cover;

a lens, which is arranged on the lens clamping piece and enables the optical axis of the lens to align with the opening;

a clamping part which protrudes outwards from the side cover, wherein the clamping part does not exceed the lens clamping piece, and the clamping part is at least partially overlapped with the lens when being observed from the optical axis direction;

an image sensing element arranged along the optical axis of the lens and configured to receive light passing through the lens; and

a lens base, including a body surrounding the side cover and a convex structure formed on the inner wall surface of the body, wherein the clamping part is abutted against the convex structure to fix the lens component on the lens base, and the clamping part is inserted into a channel defined between the adjacent convex structures;

wherein, this lens subassembly includes this camera lens holder, this lens and this block portion.

2. The camera device as claimed in claim 1, wherein the engaging portion is closer to the light incident surface of the lens assembly than the lens.

3. The camera device as claimed in claim 2, wherein the engaging portion is adjacent to the front cover.

4. The camera device as claimed in claim 1, wherein the engaging portion is further away from the light incident surface of the lens assembly than the lens.

5. The photographing device according to any one of claims 1 to 4, wherein the side cover includes:

a first annular portion;

a connecting part connecting one side of the first annular part close to the front cover; and

a second annular portion connected to the first annular portion via the connecting portion, wherein the second annular portion has a width smaller than that of the first annular portion in a direction perpendicular to the optical axis;

the clamping part is arranged on the second annular part and is separated from the connecting part by a distance.

6. The photographing device according to any one of claims 1 to 4, wherein the side cover includes:

a first annular portion;

a connecting part connecting one side of the first annular part far away from the front cover; and

7. The imaging device according to any one of claims 1 to 4, comprising a plurality of engaging portions provided at the side cover at intervals in a circumferential direction.

8. The camera device as claimed in any one of claims 1 to 4, wherein a projection of the engaging portion in a direction parallel to the optical axis is located on an optically effective surface of the lens.

9. The camera apparatus of claim 1, further comprising:

a driving coil arranged on the body of the lens base; and

and the driving magnet is arranged opposite to the driving coil.