CN113467025A

CN113467025A - Lens barrel, lens, camera module and electronic equipment

Info

Publication number: CN113467025A
Application number: CN202010238548.5A
Authority: CN
Inventors: 胡德忠; 吴俊甫; 邹海荣
Original assignee: Jiangxi Jingchao Optical Co Ltd
Current assignee: Jiangxi Jingchao Optical Co Ltd
Priority date: 2020-03-30
Filing date: 2020-03-30
Publication date: 2021-10-01

Abstract

The application discloses a lens cone for a lens, a camera module and electronic equipment, wherein an expansion groove is formed in the outer peripheral wall of the lens cone and is communicated with an accommodating cavity in the lens cone, one end of the expansion groove extends to the image side end face of the lens cone, and the other end of the expansion groove extends towards the object side end face of the lens cone; because the dilatation groove is formed in the lens barrel, when the lens group is installed in the lens barrel, the lens barrel expands, the width of the dilatation groove in the lens barrel is increased, so that the pressure of the lens barrel on the lens group is reduced, the deformation of the lens group is effectively prevented, and the yield of the lens is improved. The expanded groove after the width is expanded has the variation trend of width reduction, so that the lens barrel can provide proper pre-pressure for the inner lens group, and the positioning effect of the lens group is enhanced.

Description

Lens barrel, lens, camera module and electronic equipment

Technical Field

The application relates to the technical field of camera shooting, in particular to a lens cone, a lens, a camera module and electronic equipment.

Background

The lens comprises a lens barrel, a lens group and a pressing ring. The lens cone is internally provided with an accommodating cavity, the lens group is arranged in the accommodating cavity, and the pressing ring is used for abutting against the image side face of the lens closest to the image side in the lens group so as to enable the lens group to be stably positioned. In recent years, the requirement of the imaging pixels of the lens is higher, and in order to improve the pixels, the aspheric imaging area of the lens is larger, and the requirements of the size and the surface type of the lens are higher while the lens is made larger and thinner. The lens barrel and the lens group in the prior art are in interference fit, and after the lens group is installed in the lens, the lens group is easily extruded by the lens barrel to deform, so that the yield of the lens is reduced.

Disclosure of Invention

The application provides a lens cone, camera lens, module and electronic equipment make a video recording can reduce the extrusion to the lens group in the lens cone, prevents that the lens group from warping, promotes the yields of camera lens.

According to an aspect of the present application, a lens barrel for a lens is provided, wherein an expansion groove is formed in an outer peripheral wall of the lens barrel, the expansion groove is communicated with an accommodating cavity in the lens barrel, one end of the expansion groove extends to an image side end face of the lens barrel, and the other end of the expansion groove extends towards an object side end face of the lens barrel.

In the above scheme, the lens barrel is provided with the expansion groove, so that after the lens group is installed in the lens barrel, the lens barrel is easy to deform due to the expansion groove, the width of the expansion groove is enlarged after the lens barrel deforms, and meanwhile, the pressure of the lens barrel on the inner lens group is reduced (relative to the lens barrel in the prior art), so that the deformation of the lens group is effectively prevented, and the yield of the lens is improved.

According to some embodiments, the receiving cavity includes a lens mounting area for receiving a lens of the lens, and the expansion groove extends at least to communicate with the lens mounting area.

In the scheme, the part of the lens barrel connected with the lens is easier to deform, so that the pressure of the lens barrel on the lens is easier to reduce.

According to some embodiments, the barrel defines an optical axis, and the expansion groove extends in a direction parallel to the optical axis.

In the above scheme, the expansion tank is more convenient to process.

According to some embodiments, the size of the expansion slot is between one sixth and seven eighth of the size of the lens barrel in a direction parallel to the optical axis.

In the above scheme, when the expansion groove meets the above conditions, the lens barrel can generate appropriate pre-pressure on the lens group, and the situation that the pre-pressure is not too large to deform the lenses in the lens group can be avoided.

According to some embodiments, a dimension of the accommodation groove in a direction parallel to the optical axis is between one half and seven eighths of a dimension of the lens barrel in a direction parallel to the optical axis.

In the above scheme, when the expansion groove meets the above conditions, the risk that the pre-pressure of the lens group is still large after the lens barrel deforms due to insufficient length of the expansion groove can be avoided.

According to some embodiments, the expansion groove includes a first side wall and a second side wall disposed opposite to each other, a plane where the first side wall is located and a plane where the second side wall is located intersect at a boundary line, and the boundary line passes through the accommodation cavity in the lens barrel.

In the above scheme, the area of the inner circumferential wall of the lens barrel is as large as possible under the condition of the same grooving size of the lens barrel, the contact area of the inner circumferential wall of the lens barrel and the lens group in the lens barrel is as large as possible, and the stability of the lens group connected with the lens barrel is improved.

According to some embodiments, the line of intersection is parallel to the optical axis.

In the above scheme, the interval between the first side wall and the second side wall can not change along the direction parallel to the optical axis, so that when the expansion groove is processed, the expansion groove can be formed at one time by cutting the lens barrel along the direction parallel to the optical axis by using the cutter, and the expansion groove is conveniently processed.

According to some embodiments, the angle between the plane of the first side wall and the plane of the second side wall is between twenty and one hundred twenty degrees.

Due to the size design, the size of the expansion groove can ensure that the connection between the lens barrel and the lens group is firmer, and the lens barrel can generate enough deformation, so that the extrusion force on the lens group is reduced, and the lens group is prevented from being extruded and deformed.

According to some embodiments, the line of intersection coincides with the optical axis.

In the scheme, the structural design of the expansion slot is more convenient.

According to some embodiments, the lens barrel is provided with a plurality of accommodating grooves, and the accommodating grooves are arranged in a circular array by taking the optical axis as a central axis.

In the above scheme, the positioning effect of the pressure ring is better.

A second aspect of the present application also provides a lens barrel, including:

the lens barrel of any one of the above;

the pressing ring comprises a pressing ring and a gluing part, the pressing ring is annular and is used for pressing the lens group in the accommodating cavity, and the gluing part is connected with the pressing ring and extends towards the direction far away from the center of the pressing ring;

wherein, support the clamping ring and be located and hold the intracavity, the portion that glues extends through the dilatation groove and holds the chamber, and the portion that glues is used for gluing with the lens cone to make the clamping ring be fixed in the lens cone.

In the above scheme, the glue between the press ring and the lens barrel is completely positioned outside the accommodating cavity of the lens barrel, so that the glue can not reflect stray light in the lens barrel, and the imaging quality of the lens is improved.

According to some embodiments, the glue joint part comprises a first connecting piece and a second connecting piece, one end of the first connecting piece is connected with the pressing ring, and the other end of the first connecting piece is connected with the second connecting piece;

the first connecting piece penetrates through the containing slot, and the second connecting piece is positioned outside the side wall of the lens cone and is glued with the peripheral wall of the lens cone.

In the above scheme, on the one hand, because the process of gluing can be gone on in the outside of lens cone, it is more convenient to operate, has promoted the efficiency of gluing. On the other hand, when the dispensing amount is too large, redundant glue cannot overflow into the lens cone, so that the dispensing difficulty can be reduced.

According to some embodiments, the surface of the second connecting piece facing the pressing ring is a fitting surface, the first connecting piece is connected with the fitting surface, the fitting surface is a cambered surface arranged around a central axis of the pressing ring, and the fitting surface fits the peripheral wall of the lens barrel.

In the above scheme, the attaching surface can be better attached to the outer wall surface of the lens barrel.

According to some embodiments, the second connecting member includes a first extending portion and a second extending portion, the first extending portion extends from the end of the first connecting member away from the pressing ring toward the first side wall, the second extending portion extends from the end of the first connecting member away from the pressing ring toward the second side wall, and the first extending portion and the second extending portion are attached to the outer wall surface of the lens barrel.

In the above scheme, after the two extending parts are respectively glued with the peripheral wall of the lens barrel, the width of the expansion groove can be fixed, and the lens barrel is prevented from continuously deforming in the subsequent use process.

According to some embodiments, the first connector includes a sealing section located within the containment trough, the sealing section including a third sidewall disposed parallel to the first sidewall and a fourth sidewall disposed parallel to the second sidewall.

In the above scheme, when the structure of the sealing section is designed, the gap between the sealing section and the groove wall of the expansion groove is conveniently adjusted, and meanwhile, the sealing section and the groove wall of the expansion groove are in surface contact with each other, so that the positioning effect on the compression ring is enhanced.

According to some embodiments, the third sidewall is attached to the first sidewall and the fourth sidewall is attached to the second sidewall.

In the above scheme, after the compression ring and the lens barrel are assembled, no gap exists between the sealing section and the first side wall and the second side wall of the expansion groove, and the amount of stray light entering the lens barrel is reduced.

According to some embodiments, a dispensing space is defined between the expansion groove, the lens group and the sealing section;

the lens further comprises a sealant, and the sealant is filled in the dispensing space.

In the above scheme, the sealant can also enable the lens barrel, the lens group and the pressure ring to be simultaneously glued to form a whole, so that the lens is more stable and firmer.

According to some embodiments, the sealant is opaque.

In the scheme, the sealant can prevent stray light from entering the lens cone, and the imaging performance of the lens cone is improved.

According to some embodiments, the number of the expansion slots is plural, and each of the expansion slots is arranged in a circular array with the optical axis as a central axis;

the quantity of the gluing parts is a plurality of and is the same as the quantity of the expansion grooves, and the gluing parts are matched with the expansion grooves in a one-to-one correspondence manner.

In the above scheme, the connection of the pressure ring is more reliable.

A third aspect of the present application further provides a camera module, including;

a lens barrel of any one of the above;

the photosensitive chip is arranged at the image side end of the lens and used for receiving the light rays penetrating through the lens group.

The yields when the camera lens in the above-mentioned scheme is produced is higher.

The fourth aspect of the present application further provides an electronic device, which includes the above-mentioned camera module.

The yield is higher when the lens in the module of making a video recording in the above-mentioned scheme is produced.

The lens cone in this application, because seted up on the lens cone and enlarged the appearance groove, when the dilatation groove made installation lens group in the lens cone, the lens cone produced the inflation, thereby the width grow in the dilatation groove on the lens cone this moment reduces the pressure of lens cone to its interior lens group, has prevented effectively that the lens group from appearing warping, has promoted the yields of camera lens. The expanded groove after the width is expanded has the variation trend of width reduction, so that the lens barrel can provide proper pre-pressure for the inner lens group, and the positioning effect of the lens group is enhanced.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a perspective view of a lens barrel according to an embodiment of the present application;

fig. 2 is a perspective view of a lens barrel according to another embodiment of the present application;

FIG. 3 is a perspective view of a lens barrel according to an embodiment of the present application;

FIG. 4 is a schematic rear view of a lens barrel according to an embodiment of the present application;

FIG. 5 is a schematic full-section view of a lens barrel according to a first embodiment of the present application;

FIG. 6 is a schematic rear view of a pressure ring according to an embodiment of the present application;

FIG. 7 is an enlarged partial schematic view of FIG. 6;

FIG. 8 is a schematic rear view of a lens barrel according to another embodiment of the present application;

FIG. 9 is a schematic side view of a lens barrel according to an embodiment of the present application;

fig. 10 is a schematic side view of a lens barrel according to another embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

In order to solve the above problem, as shown in fig. 1 and 5, the present embodiment provides a lens barrel 100 for a lens barrel 10, the lens barrel 100 including a barrel side wall disposed around an optical axis 600, the barrel side wall being annular and including an outer circumferential wall 110 and an inner circumferential wall 120, the outer circumferential wall 110 being an outer wall surface of the barrel side wall, the inner circumferential wall 120 being an inner wall surface of the barrel side wall. In this embodiment, the side wall of the barrel is provided with an expansion groove 130, and the expansion groove 130 is communicated with the outer circumferential wall 110 and the inner circumferential wall 120, so that the expansion groove 130 is communicated with the accommodating cavity 140 in the lens barrel 100. Specifically, one end of the expansion groove 130 extends to the image side end surface of the lens barrel 100, and the other end extends toward the object side end surface of the lens barrel 100.

The lens group 300 of the lens 10 is mounted in the accommodating cavity 140 of the lens barrel 100. In the prior art, the lens barrel has a complete circumferential wall, and no opening is formed on the circumferential wall, so that after the lens group 300 is assembled with the lens barrel 100, there is an interactive pressing force between the lens barrel 100 and the lens group 300 in order to fix the lens group 300. When the pressing force is too large, the lenses in the lens group 300 are easily deformed. In the present embodiment, the lens barrel 100 is provided with the expansion groove 130, so that after the lens group 300 is installed in the lens barrel 100, the lens barrel 100 is more easily deformed due to the expansion groove 130, the width dimension (e.g., the distance between the first sidewall 131 and the second sidewall 132 shown in fig. 1) of the expansion groove 130 after the lens barrel 100 is deformed is increased, and meanwhile, the pressure applied to the lens group 300 inside the lens barrel 100 is decreased (compared with the lens barrel in the prior art), thereby effectively preventing the deformation of the lens group 300, and improving the yield of the lens.

On the other hand, when the lens barrel 100 is provided with the expansion slot 130, the matching precision between the lens barrel 100 and the lens group 300 can be reduced. That is, when the dimensional tolerance of the lens barrel 100 or the lens group 300 is large, the lens barrel 100 and the lens group can be well fitted. When the size of the lens barrel 100 is small (small within the range of the dimensional tolerance), after the lens group 300 is mounted, the deformation of the expansion groove 130 is increased to offset the dimensional error of the lens barrel 100; when the size of the lens barrel 100 is large (large within the range of the above dimensional tolerance), the deformation of the expansion groove 130 is reduced to cancel out the dimensional error of the lens barrel 100. Similarly, when the size of each lens in the lens group 300 is large (large within the above dimensional tolerance), the deformation of the expansion groove 130 increases after the lens group 300 is mounted in the lens barrel 100, so as to offset the dimensional error of the lens group 300; when the size of each lens in the lens group 300 is small (smaller within the above dimensional tolerance), the deformation of the expansion groove 130 is reduced after the lens group 300 is mounted in the lens barrel 100, so as to offset the dimensional error of the lens group 300. As can be seen from the above, the structure of the expansion groove 130 reduces the processing difficulty of the lens barrel 100 and the lens assembly 300.

The expansion groove 130 on the lens barrel 100 may extend along a straight line or along a curved line, and when the expansion groove 130 extends along a straight line, it may extend along a direction parallel to the optical axis 600 of the lens barrel 100 or along a direction inclined to the optical axis 600 of the lens barrel 100. In this embodiment, as shown in fig. 5 or fig. 9, the expansion groove 130 extends in a direction parallel to the optical axis 600 of the lens barrel 100, so that the expansion groove 130 can be easily processed.

The function of the accommodating groove 130 is to reduce the pressure of the lens barrel 100 on the lens group 300 therein by deforming, and obviously, the longer the length dimension of the accommodating groove 130 is, the greater the deformation amount thereof can be generated, and the stronger the capability of absorbing the pressing force between the lens barrel 100 and the lens group 300 is. In an embodiment, the accommodation groove 130 may extend to a position intersecting with the lens group 300, that is, the accommodation cavity 140 of the lens barrel 100 includes a lens mounting area for accommodating the lens group 300, and the accommodation groove 130 at least extends to be communicated with the lens mounting area, at this time, after the lens group 300 is mounted in the lens barrel 100, at least a part of the lens is exposed to the accommodation groove 130, and the deformation of the accommodation groove 130 may also directly affect the arrangement space of the exposed lens, so that the deformation of the accommodation groove 130 can more directly absorb the pressing force of the lens from the lens barrel 100.

Of course, the length of the expansion groove 130 relative to the lens barrel 100 cannot be too long, and when the expansion groove 130 is too long, the pre-pressure of the lens barrel 100 on the lens group 300 will be small, and the positioning effect on the lens group 300 will be reduced. In view of the above, in the present embodiment, preferably, when the expansion groove 130 extends in the direction parallel to the optical axis 600 of the lens barrel 100, the size of the expansion groove 130 in the optical axis 600 direction of the lens barrel 100 may be between one sixth and seven eighths of the size of the entire lens barrel 100 in the optical axis 600 direction, for example, the size of the expansion groove 130 in the optical axis 600 direction of the lens barrel 100 may be 1/6, 1/3, 1/2, 2/3, 7/8, or the like of the size of the entire lens barrel 100 in the optical axis 600 direction. When the accommodation groove 130 satisfies the above condition, the lens barrel 100 can generate a proper pre-pressure on the lens group 300, and the pre-pressure is not too large to deform the lenses in the lens group 300. Further, the size of the expansion groove 130 in the optical axis 600 direction of the lens barrel 100 may be between one-half and seven-eighths of the size of the entire lens barrel 100 in the optical axis 600 direction, for example, the size of the expansion groove 130 in the optical axis 600 direction of the lens barrel 100 may be 1/2, 2/3, 7/8, or the like of the size of the entire lens barrel 100 in the optical axis 600 direction. When the expansion groove 130 satisfies the above condition, the risk that the pre-pressure of the lens group 300 is still large after the lens barrel 100 is deformed due to the insufficient length of the expansion groove 130 can be avoided.

In particular, when the expansion groove 130 extends along a curve or extends along a direction inclined from the optical axis 600 of the lens barrel 100, the size of the expansion groove 130 may also be defined as a size parallel to the optical axis 600 direction of the lens barrel 100, that is, the size of the expansion groove 130 may be between one sixth and seven eighths of the size of the lens barrel 100 in the direction parallel to the optical axis 600 of the lens barrel 100 regardless of the extending direction of the expansion groove 130.

The shape of the containing slot 130 may depend on practical requirements, and a cross section perpendicular to the optical axis 600 of the lens barrel 100 may be a regular pattern, such as a rectangle, a sector, a trapezoid, etc. Of course, in other embodiments, the cross-section of the expansion slot 130 perpendicular to the optical axis 600 may be irregular. Specifically, in the present embodiment, the expansion groove 130 includes a first sidewall 131, a second sidewall 132, and a bottom wall, wherein the first sidewall 131 and the second sidewall 132 are disposed opposite to each other, the bottom wall is disposed between the first sidewall 131 and the second sidewall 132, and the first sidewall 131 and the second sidewall 132 extend along a direction parallel to the optical axis 600 of the lens barrel 100. For convenience of processing, the first sidewall 131 and the second sidewall 132 are planar, and a plane of the first sidewall 131 intersects a plane of the second sidewall 132 at a boundary line, which passes through the accommodating cavity 140 in the lens barrel 100. In other words, in the direction in which the inner circumferential wall 120 of the lens barrel 100 points to the outer circumferential wall 110, the distance between the first side wall 131 and the second side wall 132 of the expansion groove 130 is larger, the distance between the boundary of the first side wall 131 and the inner circumferential wall 120 of the lens barrel 100 and the boundary of the second side wall 132 and the inner circumferential wall 120 of the lens barrel 100 is smallest, and the distance between the boundary of the first side wall 131 and the outer circumferential wall 110 of the lens barrel 100 and the distance between the boundary of the second side wall 132 and the outer circumferential wall 110 of the lens barrel 100 are largest. With the structure, under the condition of the same size of the slot, the area of the inner circumferential wall 120 in the lens barrel 100 is as large as possible, and the contact area between the inner circumferential wall 120 of the lens barrel 100 and the lens group 300 in the lens barrel 100 is as large as possible, so that the stability of connecting the lens group 300 and the lens barrel 100 is improved.

In an embodiment, an intersection line of a plane where the first sidewall 131 of the expansion groove 130 and a plane where the second sidewall 132 is located is parallel to the optical axis 600, so that a distance between the first sidewall 131 and the second sidewall 132 is not changed along a direction parallel to the optical axis 600, when the expansion groove 130 is processed, the expansion groove 130 can be formed at one time by cutting the lens barrel 100 along the direction parallel to the optical axis 600 by using a cutter, which facilitates processing the expansion groove 130. Specifically, the boundary line may completely coincide with the optical axis 600 of the lens barrel 100, and such a structure may make the deformation amount of each position of the lens barrel 100 more uniform along the direction perpendicular to the wall thickness of the lens barrel 100 when the lens barrel 100 is deformed, thereby preventing the problems of large deformation amount of some parts and small deformation amount of some parts of the lens barrel 100.

When the width dimension of the accommodating groove 130 is larger, the possibility that the lens group 300 in the lens barrel 100 is deformed by being pressed is smaller, and the fitting relationship between the lens barrel 100 and the lens group 300 is weaker. When the width dimension of the accommodating groove 130 is smaller, the possibility that the lens group 300 in the lens barrel 100 is crushed and deformed is higher, but the fitting relationship between the lens barrel 100 and the lens group 300 is more secure. In view of the above, in the present embodiment, the size of the included angle between the plane of the first sidewall 131 and the plane of the second sidewall 132 is twenty degrees to one hundred twenty degrees, such a size design can enable the size of the accommodation groove 130 to both enable the connection between the lens barrel 100 and the lens group 300 to be firmer, and enable the lens barrel 100 to generate enough deformation, so as to reduce the pressing force on the lens group 300 and prevent the lens group 300 from being deformed due to the pressing.

The number of the expansion slots 130 may be one or more, and when the number of the expansion slots 130 is more than one, the shape and structure of each of the expansion slots 130 may be the same or different. Preferably, as shown in fig. 2, the number of the accommodating grooves 130 in the present embodiment is two, and the two accommodating grooves 130 have the same shape and structure, and the two accommodating grooves 130 are symmetrically arranged about the optical axis 600 of the lens barrel 100. Of course, in other embodiments, the number of the expansion slots 130 may also be three or more, and when the number of the expansion slots 130 is more than two, each expansion slot 130 may be arranged in a circular array with respect to the optical axis 600 of the lens barrel 100.

As shown in fig. 3 to 10, a second aspect of the present application further provides a lens barrel 10, where the lens barrel 10 includes the lens barrel 100 in any of the embodiments, and the lens barrel 10 further includes a lens group 300 located in the lens barrel 100 and a pressing ring 200 connected to the lens barrel 100.

As shown in fig. 6, the pressing ring 200 includes a pressing ring 210 and a glue portion 220, wherein the pressing ring 210 is annular and is used for pressing the lens group 300 located in the accommodating cavity 140 of the lens barrel 100. That is, the pressing ring 210 in the present embodiment functions as the pressing ring 200 of the pressing lens set 300 in the prior art, but the pressing ring 210 in the present embodiment is not glued to the inner peripheral wall 120 of the lens barrel 100. The adhesive portion 220 is connected to the pressing ring 210 and extends in a direction away from the center of the pressing ring 210. Specifically, the adhesive portion 220 may be connected to the outer peripheral wall 110 of the lens barrel 100, and the adhesive portion 220 may extend in a direction perpendicular to the optical axis 600 of the lens barrel 100, may extend in a direction inclined to the optical axis 600, or may extend in a direction parallel to the optical axis and then extend in a direction inclined to the optical axis.

After the pressing ring 200 is assembled to the lens barrel 100, the pressing ring 210 is located in the accommodating cavity 140 and abuts against the lens group 300 located in the lens barrel 100 (specifically, abuts against a lens of the lens group 300 closest to the image side end of the lens barrel 100). The adhesive portion 220 extends to the outside of the accommodating cavity 140 of the lens barrel 100 through the accommodating slot 130, and the adhesive portion 220 is used for adhering to the lens barrel 100 outside the accommodating cavity 140 of the lens barrel 100, so that the pressing ring 200 is fixed to the lens barrel 100. The adhesive portion 220 may be completely accommodated in the expansion slot 130, and the adhesive portion 220 is adhered to the slot wall of the expansion slot 130. The space of the expansion slot 130 is not defined as the accommodation cavity 140 of the lens barrel 100, and therefore the glue joint portion 220 is glued to the lens barrel 100 in the expansion slot 130, which may be called that the glue joint portion 220 is glued to the lens barrel 100 outside the accommodation cavity 140. Of course, the adhesive part 220 may also pass through the accommodating groove 130 and be adhered to the outer circumferential wall 110 of the lens barrel 100. When the bonding portion 220 of the pressing ring 200 extends out of the accommodating cavity 140 to bond with the lens barrel 100, the glue between the pressing ring 200 and the lens barrel 100 is completely located outside the accommodating cavity 140 of the lens barrel 100, so that the glue does not reflect stray light in the lens barrel 100, thereby improving the imaging quality of the lens 10.

When the adhesive portion 220 of the pressing ring 200 extends out of the expansion slot 130, specifically, as shown in fig. 6 to 7, the adhesive portion 220 may include a first connecting member 221 and a second connecting member 222, wherein one end of the first connecting member 221 is connected to the pressing ring 210, and the other end is connected to the second connecting member 222. The first connector 221 passes through the expansion slot 130, and the second connector 222 is located outside the sidewall of the lens barrel 100 and is glued to the outer peripheral wall 110 of the lens barrel 100. That is, the portion of the glue joint portion 220 extending out of the expansion slot 130 is glued to the outer peripheral wall 110 of the lens barrel 100, on one hand, since the glue dispensing process can be performed outside the lens barrel 100, the operation is more convenient, and the glue dispensing efficiency is improved. On the other hand, when the dispensing amount is too large, the redundant glue does not overflow into the lens barrel 100, so that the difficulty of dispensing can be reduced.

In one embodiment, the surface of the second connecting member 222 facing the pressing ring 210 is an abutting surface, and the first connecting member 221 is connected to the abutting surface, specifically, the abutting surface may be an arc surface arranged around a central axis of the pressing ring 210, and a diameter of the arc surface may be the same as a diameter of the outer peripheral wall 110 of the lens barrel 100. When the binding surface is an arc surface, after the compression ring 200 and the lens barrel 100 are assembled, the binding surface can be completely bound to the arc-shaped outer peripheral wall 110 of the lens barrel 100, so that the assembly relationship between the compression ring 200 and the lens barrel 100 is more compact.

As shown in fig. 6 to 7, the second connector 222 may include a first extending portion 2221 and a second extending portion 2222, the first extending portion 2221 extends from the end of the first connector 221 away from the pressing ring 210 toward the first sidewall 131, the second extending portion 2222 extends from the end of the first connector 221 away from the pressing ring 210 toward the second sidewall 132, and the first extending portion 2221 and the second extending portion 2222 are both attached to the outer wall surface of the lens barrel 100. That is, the first connection member 221 and the second connection member 222 are similar in structure to a "T" shape. When the second connecting member 222 extends towards two sides of the first connecting member 221, the two sides of the first connecting member 221 are stressed more uniformly, and the adhesive portion 220 may also have two adhesive dispensing portions, so that the connection relationship between the pressing ring 200 and the lens barrel 100 is more reliable. Further, after the two extending portions are respectively glued to the outer peripheral wall 110 of the lens barrel 100, the width of the accommodating groove 130 can be fixed, so that the lens barrel 100 is prevented from being deformed in the subsequent use process.

In one embodiment, the first connector 221 includes a sealing segment 2211, and the sealing segment 2211 is located in the expansion slot 130, that is, it is to be understood that after the pressing ring 200 is assembled with the lens barrel 100, the portion of the first connector 221 located in the expansion slot 130 is the sealing segment 2211. The sealing segment 2211 has two oppositely disposed exterior walls, a third side wall 22111 and a fourth side wall 22112, wherein the third side wall 22111 faces the first side wall 131 and the fourth side wall 22112 faces the second side wall 132. Specifically, the third side wall 22111 may be disposed parallel to the first side wall 131, and the fourth side wall 22112 may be disposed parallel to the second side wall 132, so that when the structure of the sealing segment 2211 is designed, the gap between the sealing segment 2211 and the groove wall of the expansion groove 130 is conveniently adjusted, and meanwhile, the sealing segment 2211 and the groove wall of the expansion groove 130 can be in surface contact, so as to enhance the positioning effect on the pressing ring 200.

When the pressing ring 200 is assembled with the lens barrel 100, the sealing segment 2211 is located in the expansion groove 130, and if a gap exists between the sealing segment 2211 and the expansion groove 130, stray light outside the lens barrel 100 enters the lens barrel 100 through the gap, thereby affecting the imaging effect of the lens 10. Therefore, in order to improve the imaging quality of the lens barrel 10, in an embodiment, the third side wall 22111 is attached to the first side wall 131, and the fourth side wall 22112 is attached to the second side wall 132, that is, when the pressing ring 200 is assembled with the lens barrel 100, there is no gap between the sealing segment 2211 and the first side wall 131 and the second side wall 132 of the expansion groove 130, so that the amount of the stray light entering the lens barrel 100 is reduced.

When the length (the dimension in the direction parallel to the optical axis 600) of the expansion groove 130 of the lens barrel 100 is short, after the pressing ring 200 is connected with the lens barrel 100, the sealing section 2211 of the pressing ring 200 can abut against the bottom wall of the expansion groove 130, so that no gap is left between the sealing section 2211 and the bottom wall of the expansion groove 130, and external light is prevented from entering the lens barrel 100 through the gap between the sealing section 2211 and the bottom wall of the expansion groove 130. However, when the pressing ring 200 abuts against the accommodating groove 130, the difficulty in processing the accommodating groove 130 is increased, because the accommodating groove 130 is just formed at the image side surface of the lens closest to the image side end of the lens barrel 100 of the lens group 300, so that the pressing ring 200 can abut against the bottom wall of the accommodating groove 130 while abutting against the lens group 300.

In order to solve the above problem, in the present embodiment, a dispensing space 400 is defined between the expansion slot 130, the lens assembly 300 and the sealing section 2211, and the lens 10 further includes a sealant 500, wherein the dispensing space 400 is filled with the sealant 500 (shown in fig. 9). That is, the sealing section 2211 does not abut against the bottom wall of the expansion groove 130, but a gap is formed between the sealing member and the bottom wall of the expansion groove 130, and the gap is filled with the sealant 500, and preferably, the sealant 500 may be made of an opaque material. Thus, the sealant 500 can prevent the gap between the sealing segment 2211 and the bottom wall of the expansion groove 130 from passing stray light, and the sealant 500 can also glue the lens barrel 100, the lens set 300 and the press ring 200 at the same time to form a whole, so that the lens 10 is more stable and firmer.

When the number of the expansion slots 130 on the lens barrel 100 is multiple (two or more), the number of the glue joint portions 220 may also be multiple, and the number of the glue joint portions 220 is the same as the number of the expansion slots 130. The glue joints 220 are matched with the expansion slots 130 in a one-to-one correspondence. In this embodiment, as shown in fig. 8, the number of the expansion grooves 130 of the lens barrel 100 is two, and the two expansion grooves 130 are symmetrically arranged with respect to the optical axis 600 of the lens barrel 100. At this time, the number of the glue joint portions 220 of the pressing ring 200 is also two, the two glue joint portions 220 are symmetrically distributed about the center of the pressing ring 200, and the two glue joint portions 220 are matched with the two accommodating grooves 130 in a one-to-one correspondence manner.

The third aspect of the present application further provides a camera module, which includes the lens 10 and the photosensitive chip in any of the above embodiments. The photo sensor is disposed at an image side end of the lens assembly 10 for receiving light passing through the lens assembly 300.

The fourth aspect of the present application also provides an electronic device, which includes the camera module in any of the above embodiments. The electronic device may be any device capable of taking a picture by using a camera module, such as a mobile phone, a tablet, a notebook, and the like.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present application, it is to be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and specific meanings of the above terms may be understood by those skilled in the art according to specific situations.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. The lens barrel for the lens is characterized in that an expansion groove is formed in the peripheral wall of the lens barrel and communicated with an accommodating cavity in the lens barrel, one end of the expansion groove extends to the image side end face of the lens barrel, and the other end of the expansion groove extends towards the object side end face of the lens barrel.

2. The lens barrel according to claim 1,

the accommodating cavity comprises an accommodating lens mounting area for accommodating the lens, and the expansion groove at least extends to and is communicated with the lens mounting area.

3. The lens barrel according to claim 1,

the lens barrel defines an optical axis, and the expansion groove extends in a direction parallel to the optical axis.

4. The lens barrel according to claim 1,

the size of the containing groove along the direction parallel to the optical axis is between one sixth and seven eighth of the size of the lens barrel along the direction parallel to the optical axis.

5. The lens barrel according to claim 1,

the size of the containing groove along the direction parallel to the optical axis is between one half and seven eighths of the size of the lens barrel along the direction parallel to the optical axis.

6. The lens barrel according to claim 1,

the containing groove comprises a first side wall and a second side wall which are oppositely arranged, a plane where the first side wall is located and a plane where the second side wall is located are intersected on a boundary line, and the boundary line penetrates through the containing cavity in the lens barrel.

7. The lens barrel according to claim 6,

the boundary line is parallel to the optical axis.

8. The lens barrel according to claim 7,

the size of an included angle between a plane where the first side wall is located and a plane where the second side wall is located is between twenty degrees and one hundred twenty degrees.

9. The lens barrel according to claim 8,

the boundary line coincides with the optical axis.

10. The lens barrel according to claim 1,

the lens barrel is provided with a plurality of the expansion grooves, and the expansion grooves are arranged in a circular array by taking the optical axis as a central axis.

11. A lens barrel characterized by comprising:

the lens barrel of one of claims 1 to 9;

wherein, it is located to support the clamping ring hold the intracavity, the portion of gluing passes through it extends to expand to hold the chamber to glue the portion, just glue the portion be used for with the lens cone splices, thereby makes the clamping ring is fixed in the lens cone.

12. The lens barrel as recited in claim 11,

the glue joint part comprises a first connecting piece and a second connecting piece, one end of the first connecting piece is connected with the pressing ring, and the other end of the first connecting piece is connected with the second connecting piece;

the first connecting piece penetrates through the containing expansion groove, and the second connecting piece is located outside the side wall of the lens barrel and is glued with the peripheral wall of the lens barrel.

13. The lens barrel as recited in claim 12,

the second connecting piece face to the surface that supports the clamping ring is the binding face, first connecting piece with the binding face is connected, just the binding face is for winding the cambered surface that the central axis of supporting the clamping ring arranged, the binding face laminate in the periphery wall of lens cone.

14. The lens barrel as recited in claim 12,

the second connecting piece comprises a first extending portion and a second extending portion, the first extending portion extends from the end portion, deviating from the pressing ring, of the first connecting piece towards the direction of the first side wall, the second extending portion extends from the end portion, deviating from the pressing ring, of the first connecting piece towards the direction of the second side wall, and the first extending portion and the second extending portion are attached to the outer wall surface of the lens barrel.

15. The lens barrel as recited in claim 12,

the first connecting piece comprises a sealing section, the sealing section is located in the expansion groove, and the sealing section comprises a third side wall and a fourth side wall, the third side wall is parallel to the first side wall, and the fourth side wall is parallel to the second side wall.

16. The lens barrel as recited in claim 15,

the third side wall is attached to the first side wall, and the fourth side wall is attached to the second side wall.

17. The lens barrel as recited in claim 15,

a dispensing space is defined among the expansion groove, the lens group and the sealing section;

18. The lens barrel as recited in claim 17,

the sealant is made of opaque materials.

19. The lens barrel as recited in claim 17,

the number of the expansion slots is multiple, and the expansion slots are arranged in a circular array by taking the optical axis as a central axis;

the number of the gluing parts is multiple and is the same as that of the accommodating grooves, and the gluing parts are matched with the accommodating grooves in a one-to-one correspondence mode.

20. A camera module is characterized by comprising;

a lens barrel as claimed in any one of claims 11 to 19;

and the photosensitive chip is arranged at the image side end of the lens and used for receiving the light rays penetrating through the lens group.

21. An electronic device comprising the camera module of claim 20.