CN219811074U - Lens assembly and electronic equipment - Google Patents

Abstract

The embodiment of the utility model provides a lens assembly and electronic equipment. The lens assembly includes: the lens barrel comprises a barrel body and a barrel head; the lens group comprises at least two lenses arranged in the cylinder body; at least one glue injection hole which is arranged on the lens cone, penetrates through the side wall of the lens cone and is communicated with the glue injection space and the external space; the filling colloid is arranged in the glue injection space; at least one air escape hole is arranged on the lens barrel, the air escape hole and the glue injection hole are separated and independently arranged, the air escape hole penetrates through the side wall of the lens barrel and is communicated with the glue injection space and the external space, and gas in the glue injection space is discharged out of the lens barrel through the air escape hole. The lens component can improve the optical performance of the assembled lens group; the thickness of the optical cement between the lenses is uniform, no bubbles exist, the filling efficiency of the optical cement is high, and the size of the lens assembly is reduced.

Description

Lens assembly and electronic equipment

Technical Field

The utility model relates to the technical field of lenses, in particular to a lens assembly and electronic equipment.

Background

At present, in order to prevent the lens from being shifted, a fitting structure is usually arranged in a non-light-transmitting area of the lens, but the overall dimension of the lens group is larger, so that the dimension of a corresponding lens assembly is also larger.

Disclosure of Invention

In view of the above, it is necessary to provide a lens assembly and an electronic device for solving the technical problems that the thickness of the optical cement is not uniform, bubbles exist between the glues, optical focusing is difficult to be performed on the lens and the lens assembly, and the size of the lens assembly is large.

One embodiment of the present utility model provides a lens assembly, including:

the lens barrel comprises a barrel body and a barrel head arranged at the upper end of the barrel body;

the lens group comprises at least two lenses which are stacked in the cylinder body, the lenses close to the cylinder head are adhered to the cylinder head, wherein a gap between the lenses and the inner wall of the cylinder body is communicated with a gap between two adjacent lenses to form a glue injection space;

the glue injection hole penetrates through the side wall of the lens barrel and is communicated with the glue injection space and the external space;

the filling colloid is arranged in the glue injection space;

at least one escape hole is arranged on the lens cone, the escape hole and the glue injection hole are separated and independently arranged, the escape hole penetrates through the side wall of the lens cone and is communicated with the glue injection space and the external space, and gas in the glue injection space is discharged out of the lens cone through the escape hole.

According to the lens assembly, at least two lenses included in the lens group are focused and arranged in the lens barrel in an adhering manner, so that the optical performance of the assembled lens group can be improved; injecting liquid optical cement into the cement injecting space through the cement injecting hole, filling the cement injecting space formed by the clearance between the lens and the inner wall of the cylinder body and the clearance between the two adjacent lenses with the liquid optical cement, and discharging gas in the cement injecting space through the air escape hole in the cement injecting process, so that the thickness of the filling cement formed by solidifying the liquid optical cement between the lenses is uniform, no bubbles exist, and the filling efficiency of the filling cement is higher; in addition, as the fit structure is not needed between the lenses, the size of the lens group and the lens assembly is reduced.

In some embodiments, one end of the glue injection hole and/or the air escape hole penetrates through the inner wall of the barrel body, and is arranged opposite to the bonding position of at least two adjacent lenses in one group.

So, can make liquid optical cement follow the injecting glue hole and flow into in the injecting glue space fast, and the air in the injecting glue space can follow the escape hole fast and discharge, the injecting glue efficiency is higher.

In some embodiments, when the other end of the glue injection hole penetrates the outer wall of the barrel, the glue injection hole comprises a first hole and a second hole which are communicated, the first hole penetrates the inner wall of the barrel, the second hole penetrates the outer wall of the barrel, and the inner diameter of the second hole is larger than the inner diameter of the first hole.

So, the second hole can be used to be connected with the rubber tube, and it is comparatively convenient to connect to make liquid optical cement get into first hole and injecting glue space in proper order in order to carry out the injecting glue.

In some embodiments, the glue injection hole and/or the air escape hole penetrate through two opposite sides of the cylinder head along the optical axis direction so as to communicate with the glue injection space.

Thus, the lens assembly can be applied to a lens assembly with a large gap between the side wall of the barrel and the lens group.

In some embodiments, when two ends of the glue injection hole penetrate through two opposite sides of the barrel head respectively, the glue injection hole and/or the air escape hole are stepped holes, and an inner diameter of a side, close to the lens group, of the glue injection hole and/or the air escape hole is smaller than an inner diameter of a side, far from the lens group.

Thus, glue injection and/or air exhaust can be facilitated.

In some embodiments, one end of the glue injection hole and/or the air escape hole penetrates through the inner wall of the barrel and is opposite to the bonding position of two adjacent lenses, and the other end of the glue injection hole and/or the air escape hole penetrates through the upper end of the barrel.

In this way, the lens barrel can be applied to a lens barrel having a large thickness.

In some embodiments, the lens group comprises a first lens group and a second lens group which are sequentially arranged, the first lens group is close to the barrel body relative to the second lens group, the lenses relatively close to the barrel head in the first lens group are first lenses, and the lenses relatively far away from the barrel head in the second lens group are second lenses; the lens assembly further comprises preassembled colloid, wherein the preassembled colloid is arranged at the joint of the first lens and the lens barrel and the joint of the second lens and the lens barrel, so that the first lens, the second lens and the lens barrel are adhered, the preassembled colloid is further arranged between the lens groups at intervals, and the first lens and the lens barrel and/or the second lens and the inner wall of the barrel are/is connected in a sealing mode.

Therefore, the first lens and the second lens can be subjected to optical focusing and pre-fixing when being assembled to the lens barrel, and the first lens and the lens barrel and/or the second lens and the inner wall of the barrel body are/is in sealing connection, so that the optical performance of the assembled lenses is improved.

In some embodiments, the first lens group and/or the second lens group includes a third lens, the third lens is disposed between the first lens and the second lens, the pre-filled colloid is further disposed at a connection portion between the third lens and the barrel and is in sealing connection with an inner wall of the barrel, and the glue injection hole and the air escape hole are two groups and respectively correspond to and conduct a bonding position between the first lens and the second lens and a bonding position between the second lens and the third lens.

Therefore, the first lens, the second lens and the third lens can be subjected to optical focusing and pre-fixing when being assembled to the lens barrel, and the first lens and the lens barrel and/or the third lens and the inner wall of the barrel body are/is in sealed connection, so that the optical performance of the assembled lenses is improved.

In some embodiments, the lens is provided with a plurality of protruding structures at intervals along the circumferential direction, and a plurality of protruding structures are positioned between two adjacent lenses.

In this way, a gap can be formed between two adjacent lenses, so that the liquid optical adhesive enters and fills the gap between the two lenses through the gap between the adjacent convex structures.

An embodiment of the utility model further provides an electronic device, which comprises the lens assembly.

The electronic equipment comprises the lens assembly, wherein the lens assembly focuses at least two lenses included in the lens group and is arranged in the lens cone in an adhesive manner, so that the optical performance of the assembled lens group can be improved; injecting liquid optical cement into the cement injecting space through the cement injecting hole, filling the cement injecting space formed by the clearance between the lens and the inner wall of the cylinder body and the clearance between the two adjacent lenses with the liquid optical cement, and discharging gas in the cement injecting space through the air escape hole in the cement injecting process, so that the thickness of the filling cement formed by solidifying the liquid optical cement between the lenses is uniform, no bubbles exist, and the filling efficiency of the filling cement is higher; in addition, as the fit structure is not needed between the lenses, the size of the lens group and the lens assembly is reduced.

Drawings

Fig. 1 is a schematic cross-sectional view of a lens assembly according to a first embodiment of the present utility model.

Fig. 2 is a schematic view of the structure of the upper side of the first lens in fig. 1.

Fig. 3 is a schematic view of the structure of the underside of the first lens in fig. 1.

Fig. 4 is a partial enlarged view of the lens assembly at IV in fig. 1.

Fig. 5 is a schematic view of the structure of the underside of the first lens and the underside of the second lens in fig. 1.

Fig. 6 is a schematic cross-sectional view of a lens assembly according to a second embodiment of the present utility model.

Fig. 7 is a schematic cross-sectional view of a lens assembly according to a third embodiment of the present utility model.

Fig. 8 is a schematic view of a partial cross-sectional structure of a lens assembly according to a fourth embodiment of the present utility model.

Fig. 9 is a schematic view of a partial cross-sectional structure of a lens assembly according to a fifth embodiment of the present utility model.

Fig. 10 is a schematic view of a partial cross-sectional structure of a lens assembly according to a sixth embodiment of the present utility model.

Fig. 11 is a schematic view of a partial cross-sectional structure of a lens assembly according to a seventh embodiment of the present utility model.

Fig. 12 is a schematic view showing a partial cross-sectional structure of a lens assembly according to an eighth embodiment of the present utility model.

Description of the main reference signs

Lens assembly 10

Lens barrel 11

Barrel 111

Inner wall 1111

Outer wall 1112

Cartridge head 112

Lens set 12

First lens group 12A

Second lens group 12B

First lens 121

Second lens 122

Third lens 123

Glue injection hole 13

First hole 131

Second hole 132

Filling colloid 14

Escape hole 15

Pre-filled gel 16

Projection arrangement 17

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.

In the description of the present utility model, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Embodiments of the present utility model will be further described with reference to the accompanying drawings.

Referring to fig. 1, a lens assembly 10 according to a first embodiment of the present utility model includes a lens barrel 11, a lens set 12, a molding hole 13, a filling compound 14 and an air vent 15.

The lens barrel 11 is of a hollow structure, and the lens barrel 11 comprises a barrel 111 and a barrel head 112 arranged at the upper end of the barrel 111.

The lens group 12 includes a first lens group 12A and a second lens group 12B sequentially disposed in the barrel 111, the first lens group 12A is close to the barrel 112 relative to the second lens group 12B, the lens relatively close to the barrel 112 in the first lens group 12A is a first lens 121, the lens relatively far from the barrel 112 in the second lens group 12B is a second lens 122, wherein the second lens group 12B further includes a third lens 123, the third lens 123 is disposed between the first lens 121 and the second lens 122, in this embodiment, the third lens 123 is only one, and the first lens group 12A does not include the third lens 123. It is understood that in other embodiments, only the first lens group 12A includes a third lens 123 and the second lens group 12B does not include the third lens 123. It is understood that in other embodiments, only the first lens group 12A includes a plurality of third lenses 123, or only the second lens group 12B includes a plurality of third lenses 123, or both the first lens group 12A and the second lens group 12B include a plurality of third lenses 123. The two sides of the first lens 121 are respectively bonded to the barrel 112 and the third lens 123, the second lens 122 is bonded to one side of the third lens 123 facing away from the first lens 121, a certain gap is formed between the first lens 121, the second lens 122 and the third lens 123 and the inner wall 1111 of the barrel 111, and a glue injection space (not shown) is formed between the gap and the gap between two adjacent lenses.

The glue injection hole 13 is disposed on the lens barrel 11 and penetrates through a side wall of the lens barrel 11, and it can be understood that the side wall includes an inner wall 1111 of the barrel 111, an outer wall 1112 of the barrel 111, a side of the barrel 112 near the lens group 12 and a side of the barrel 112 away from the lens group 12, wherein the barrel 111 is a structure extending in the vertical direction in fig. 1, and the barrel 112 is disposed on the inner wall 1111 of the barrel 111 and is bent vertically relative to the barrel 111. In fig. 1, the extending direction of the glue injection hole 13 is perpendicular to the optical axis direction of the lens group 12, and the optical axis direction of the lens group 12 is the up-down direction in fig. 1, it is understood that in other embodiments, the extending direction of the glue injection hole 13 is disposed at an acute angle or an obtuse angle, for example, 30 degrees, 120 degrees, etc., with respect to the optical axis direction of the lens group 12, but not limited thereto. One end of the glue injection hole 13 penetrates through the inner wall 1111 of the barrel 111 of the lens barrel 11 and is communicated with the glue injection space, the end of the glue injection hole 13 is arranged corresponding to the bonding position of the first lens 121 and the third lens 123, it is understood that in other embodiments, the end of the glue injection hole 13 may not be arranged corresponding to the bonding position of the first lens 121 and the third lens 123; the other end of the glue injection hole 13 penetrates through the outer wall 1112 of the barrel 111 of the lens barrel 11, so that the liquid optical glue is conveniently injected into the glue injection space through the glue injection hole 13 from the outside. In the present embodiment, the shape of the injection hole 13 may be cylindrical, and it is understood that in other examples, the shape of the injection hole 13 may be prismatic, but not limited thereto, and the shape is mainly used for adapting to different injection needles or injection modes.

The filling gel 14 is disposed in the gel injecting space and is formed by solidifying the liquid optical gel filled in the gel injecting space through the gel injecting hole 13, that is, the filling gel 14 fills the gap between the lens group 12 and the inner wall 1111 of the barrel 111 and the gap between two adjacent lenses, thereby ensuring the stability and optical performance of the assembled lens group 12.

The air vent 15 is arranged on the barrel body 111 of the lens barrel 11 and is separated from the glue injection hole 13, wherein the air vent 15 and the glue injection hole 13 are arranged on two opposite sides of the barrel body 111. The extending direction of the air vent 15 is perpendicular to the optical axis direction of the lens group 12; it is understood that in other embodiments, the extending direction of the air vent 15 is disposed at an acute angle or an obtuse angle with respect to the optical axis direction of the lens set 12, such as 30 degrees, 120 degrees, etc., but is not limited thereto. One end of the escape hole 15 penetrates through the inner wall 1111 of the barrel 111 of the lens barrel 11 and is communicated with the glue injection space, the end of the escape hole 15 is arranged corresponding to the bonding position of the first lens 121 and the third lens 123, and the other end of the escape hole 15 penetrates through the outer wall 1112 of the barrel 111 of the lens barrel 11 to discharge the gas in the glue injection space in the glue injection process. In the present embodiment, the shape of the air vent 15 may be a cylinder, a prism, or a step, but is not limited thereto.

The lens assembly 10 further includes a pre-filling body 16, wherein the pre-filling body 16 is disposed at a connection portion between the first lens 121 and the lens barrel 11 and a connection portion between the second lens 122 and the lens barrel 11, so that the first lens 121, the second lens 122, and the third lens 123 are respectively bonded to the lens barrel 11, and disposed between the first lens 121 and the third lens 123, between the second lens 122 and the third lens 123 to bond the first lens 121, the second lens 122, and the third lens 123, wherein the first lens 121 and the lens barrel 11 and the second lens 122 are hermetically connected to an inner wall of the barrel 111. It will be appreciated that in other embodiments, only the first lens 121 is hermetically connected to the barrel 11; it will be appreciated that in other embodiments, only the second lens 122 is sealingly connected to the inner wall of the barrel 111. In this embodiment, the pre-filled gel 16 is formed by curing a common glue.

The connection between the first lens 121 and the lens barrel 11 is the contact position between the upper side or the outer peripheral surface of the first lens 121 and the lens barrel 11; the connection between the second lens 122 and the lens barrel 11 is the contact position between the lower side or the outer peripheral surface of the second lens 122 and the lens barrel 11.

The pre-filling body 16 is mainly used when the lens group 12 is installed in the lens barrel 11. Referring to fig. 2, in the assembly process, a pre-filling body 16 is disposed on the outer side wall of the first lens 121 or on the upper side of the non-light-transmitting area, so as to bond the first lens 121 and the lens barrel 11 together, wherein the pre-filling body 16 is continuous and uninterrupted; then, the third lens 123 and the first lens 121 are optically focused so that the optical axes of the first lens 121 and the third lens 123 coincide; thereafter, referring to fig. 3, a pre-filling body 16 is disposed at the lower side of the non-transparent area of the first lens 121, so that the non-transparent area of the upper side of the third lens 123 is adhered to the non-transparent area of the lower side of the first lens 121, wherein the pre-filling body 16 is discontinuous, and the discontinuous portions of the pre-filling body 16 may be two, three or four, but not limited thereto, and correspond to one end of the glue injection hole 13 penetrating the inner wall 1111 of the barrel 111 and one end of the air escape hole 15 penetrating the inner wall 1111 of the barrel 111 respectively; then, the second lens 122 is mounted in a manner of mounting the third lens 123; after the second lens 122 is mounted, a pre-filled body 16 is provided on the outer circumferential surface of the second lens 122 or the underside of the non-light-transmitting area so that the second lens 122 is adhered to the inner wall 1111 of the barrel 111. In this way, by making the lens and the lens perform optical focusing and pre-fixing at the time of assembling to the lens barrel 11, the optical performance after assembling the lens can be improved.

Referring to fig. 4 and 5, four protruding structures 17 are disposed at intervals on the lower side of the non-light-transmitting area of the first lens 121 and the lower side of the non-light-transmitting area of the third lens 123, so that the liquid optical cement enters between two adjacent lenses through the gap between the two adjacent protruding structures 17. In this way, a gap can be formed between two adjacent lenses, so that the liquid optical cement enters through the gap between adjacent protruding structures 17 and fills the gap between the two lenses. It will be appreciated that in other embodiments, the number of protruding structures 17 may be two or six, but is not limited thereto.

It is understood that in other embodiments, the protruding structures 17 may be disposed on the upper side of the non-light-transmitting area of the third lens 123 and the upper side of the non-light-transmitting area of the second lens 122, but is not limited thereto.

It will be appreciated that the pre-filled gel 16 may also be disposed on the outer peripheral surface of the third lens 123 and the inner wall 1111 of the barrel 111 to connect the outer peripheral surface of the third lens 123 and the inner wall 1111 of the barrel 111, thereby achieving pre-fixation of the third lens 123.

The lens assembly 10 of the first embodiment can improve the optical performance of the assembled lens group 12 by focusing three lenses included in the lens group 12 and arranging the three lenses in the lens barrel 11 in an adhesive manner; the liquid optical cement is injected into the cement injection space through the cement injection hole 13, the cement injection space formed by the clearance between the lens and the inner wall 1111 of the cylinder 111 and the clearance between the adjacent two lenses is filled with the liquid optical cement, and the gas in the cement injection space is discharged through the air escape hole 15 in the cement injection process, so that the thickness of the optical cement between the lenses is uniform, no bubbles exist, and the filling efficiency of the optical cement is higher; in addition, because a fitting structure is not required between the lenses, the size of the lens assembly 10 is reduced.

Referring to fig. 6, a lens assembly 10 according to a second embodiment of the present utility model includes a lens barrel 11, a lens set 12, a molding hole 13, a molding compound 14 and an air vent 15, wherein the lens assembly 10 according to the second embodiment is substantially the same as the lens assembly 10 according to the first embodiment, and is different in that:

only the first lens 121 is included in the first lens group 12A, and the first lens 121 is a lens relatively close to the barrel head 112; only the second lens 123 is included in the second lens group 12B, and the second lens 123 is a lens relatively far from the barrel head 112; the upper side of the non-light-transmitting area of the first lens 121 is provided with a pre-filled colloid 16 to be adhered to the lens barrel 11, the first lens 121 and the second lens 123 are adhered to each other and have a certain gap with the inner wall 1111 of the barrel 111, the lower side of the non-light-transmitting area of the second lens 123 is provided with a pre-filled colloid 16 to adhere the second lens 123 to the inner wall 1111 of the barrel 111, wherein the first lens 121 and the lens barrel 11 and/or the second lens 122 are in sealing connection with the inner wall 1111 of the barrel 111, the gap between the lens group 12 and the inner wall 1111 of the barrel 111 and the gap between the first lens 121 and the second lens 123 form a glue injecting space, and the filling colloid 14 is arranged in the glue injecting space.

It will be appreciated that in other embodiments, the outer sidewall of the second lens 123 is provided with a pre-filled gel 16 to bond the second lens 123 to the inner wall 1111 of the barrel 111.

The lens assembly 10 of the second embodiment is applicable to the lens assembly 10 having only two lenses, and has a high injection efficiency, compared to the lens assembly 10 of the first embodiment.

Referring to fig. 7, a lens assembly 10 according to a third embodiment of the present utility model includes a lens barrel 11, a lens set 12, a glue injection hole 13, a glue filling 14 and an air escape hole 15, wherein the lens assembly 10 according to the third embodiment is substantially the same as the lens assembly 10 according to the second embodiment, and is different in that:

the lens set 12 further includes a third lens 123, wherein the third lens 123 is disposed between the first lens 121 and the second lens 122, and an outer peripheral surface of the third lens 123 is provided with a pre-filled body 16 so that the third lens 123 and an inner wall 1111 of the barrel 111 are sealed and bonded.

The number of the glue injection holes 13 and the air escape holes 15 is two, and each group of the glue injection holes 13 and the air escape holes 15 are opposite to the bonding positions of two adjacent lenses. Namely, the two sets of glue injection holes 13 are respectively arranged corresponding to the bonding positions of the first lens 121 and the third lens 123 and the bonding positions of the second lens 122 and the third lens 123, and the two sets of air escape holes 15 are respectively arranged corresponding to the bonding positions of the first lens 121 and the second lens 122 and the bonding positions of the second lens 122 and the third lens 123. It is understood that the glue injection holes 13 and the air escape holes 15 of each group may be one or more, but are not limited thereto.

In the third embodiment, after the glue is injected into the glue injection hole 13 corresponding to the bonding position of the first lens 121 and the third lens 123 in the second embodiment, the glue is injected into the glue injection hole 13 corresponding to the bonding position of the second lens 122 and the third lens 123.

Compared with the lens assembly 10 in the second embodiment, the lens assembly 10 of the third embodiment can sequentially and respectively perform glue injection on the bonding positions of two adjacent lenses through the two glue injection holes 13, is suitable for glue injection of the lens assembly 10 with a plurality of lenses, has low requirements on technological parameters, high success rate and low material scrapping cost, and can perform glue injection through the plurality of glue injection holes 13, thereby improving glue injection efficiency and reducing cost.

Referring to fig. 8, a lens assembly 10 according to a fourth embodiment of the present utility model includes a lens barrel 11, a lens set 12, a glue injection hole 13 and a glue filling body 14, wherein only a part of the structure is shown, and the lens assembly 10 according to the fourth embodiment is substantially the same as the lens assembly 10 according to the first embodiment, except that:

the part of the glue injection hole 13 extends along the optical axis direction of the lens group 12, one end of the glue injection hole extends through the upper end of the barrel 111, and the other part of the glue injection hole 13 extends through the inner wall 1111 of the barrel 111 along the direction perpendicular to the optical axis direction of the lens group 12.

The lens assembly 10 of the fourth embodiment can be applied to a lens barrel 11 having a thicker thickness than the lens assembly 10 of the first embodiment.

It will be appreciated that in other embodiments, one end of the glue injection hole 13 penetrates the inner wall 111 of the barrel 111 and is disposed opposite to the bonding position of two adjacent lenses, and the other end of the glue injection hole 13 penetrates the side of the barrel head 112 facing away from the lens group 12.

Referring to fig. 9, a lens assembly 10 according to a fifth embodiment of the present utility model includes a lens barrel 11, a lens set 12, a glue injection hole 13 and a glue filling body 14, wherein only a part of the structure is shown, and the lens assembly 10 according to the fifth embodiment is substantially the same as the lens assembly 10 according to the first embodiment, except that:

the glue injection hole 13 comprises a first hole 131 and a second hole 132 which are communicated, the first hole 131 penetrates through the inner wall 1111 of the barrel 111, the second hole 132 penetrates through the outer wall 1112 of the barrel 111, the inner diameter of the second hole 132 is larger than that of the first hole 131, the second hole 132 is a threaded hole, a screw tooth is arranged on a rubber tube, and the screw tooth of the rubber tube is matched with the second hole of the glue injection hole.

Compared to the lens assembly 10 of the first embodiment, the lens assembly 10 of the fifth embodiment has the inner diameter of the second hole 132 larger than the inner diameter of the first hole 131, so that the connection between the screw on the rubber tube and the second hole 132 of the injection hole 13 is more convenient, and the liquid optical cement can enter the first hole 131 and the injection space in sequence for injection.

It will be appreciated that in other embodiments, the configuration of the air vent 15 is the same as that of the glue injection hole 13 in the fifth embodiment.

Referring to fig. 10, a lens assembly 10 according to a sixth embodiment of the present utility model includes a lens barrel 11, a lens set 12, a glue injection hole 13 and a glue filling body 14, wherein only a part of the structure is shown, and the lens assembly 10 according to the sixth embodiment is substantially the same as the lens assembly 10 according to the first embodiment, except that:

the extending direction of the glue injection hole 13 is parallel to the optical axis direction of the lens group 12, two ends of the glue injection hole 13 respectively penetrate through two opposite sides of the cylinder head 112 and are communicated with the glue injection space, and the penetrating position of the glue injection hole 13 on one side of the cylinder head 112 close to the lens group 12 is located between the lens and the inner wall 1111 of the cylinder body 111. It will be appreciated that in other embodiments, the direction of extension of the glue injection hole 13 is inclined to the optical axis direction of the lens set 12.

It will be appreciated that in other embodiments, the glue injection hole 13 is a stepped hole, and the inner diameter of the hole on the side of the glue injection hole 13 close to the lens set 12 is smaller than the inner diameter of the hole on the side away from the lens set 12, and the hole on the side away from the lens set 12 is a threaded hole. Because the screw teeth are arranged on the rubber tube, the inner diameter of the hole on the side, close to the lens group 12, of the glue injection hole 13 is smaller than the inner diameter of the hole on the side, far away from the lens group 12, of the lens group 12, so that the connection between the screw teeth on the rubber tube and the hole on the side, far away from the lens group 12, of the glue injection hole 13 is more convenient, and the liquid optical glue can enter the hole on the side, close to the lens group 12, of the glue injection hole 13 in sequence and the glue injection space in order to perform glue injection.

The lens assembly 10 of the sixth embodiment can be applied to a lens assembly 10 in which the gap between the side wall of the barrel 111 and the lens group 12 is large, as compared to the lens assembly 10 of the first embodiment.

Referring to fig. 11, a seventh embodiment of the present utility model provides a lens assembly 10, which includes a lens barrel 11, a lens set 12, a filling gel 14, and an air vent 15, wherein only a part of the structure is shown, and the lens assembly 10 of the seventh embodiment is substantially the same as the lens assembly 10 of the first embodiment, except that:

part of the air vent 15 extends along the optical axis direction of the lens group 12 and one end of the air vent 15 penetrates through the upper end of the barrel 111, and the other part of the air vent 15 is arranged along the direction perpendicular to the optical axis direction of the lens group 12 and penetrates through the inner wall 1111 of the barrel 111.

The lens assembly 10 of the seventh embodiment can be applied to a lens barrel 11 having a thicker thickness than the lens assembly 10 of the first embodiment.

It will be appreciated that in other embodiments, one end of the air vent 15 extends through the inner wall 1111 of the barrel 111 opposite to the bonding location of two adjacent lenses, and the other end of the air vent 15 extends through the side of the barrel head 112 facing away from the lens set 12.

Referring to fig. 12, an eighth embodiment of the present utility model provides a lens assembly 10, which includes a lens barrel 11, a lens set 12, a filling gel 14, and an air vent 15, wherein only a part of the structure is shown, and the lens assembly 10 of the eighth embodiment is substantially the same as the lens assembly 10 of the first embodiment, except that:

the extending direction of the air vent 15 is parallel to the optical axis direction of the lens set 12, two ends of the air vent 15 respectively penetrate through two opposite sides of the barrel head 112 and are communicated with the glue injecting space, and the penetrating position of the air vent 15 on one side of the barrel head 112 close to the lens set 12 is located between the lens and the inner wall 1111 of the barrel body 111. It will be appreciated that in other embodiments, the direction of extension of the glue injection hole 13 is inclined to the optical axis direction of the lens set 12.

The lens assembly 10 of the eighth embodiment can be applied to a lens assembly 10 in which the gap between the side wall of the barrel 111 and the lens group 12 is large, as compared to the lens assembly 10 of the first embodiment.

It will be appreciated that in other embodiments, the vent 15 is a stepped hole, and the inner diameter of the vent 15 on the side closer to the lens set 12 is smaller than the inner diameter on the side farther from the lens set 12. When the air escape holes 15 are arranged in a step shape, the excessive liquid optical cement can overflow from the air escape holes 15, thereby preventing the pollution to the lens; in addition, since the glue injection amount of the liquid optical glue is larger than the glue injection space, the liquid optical glue can be filled in the glue injection space, and the air escape holes 15 cannot be arranged very large, otherwise, a large amount of liquid optical glue overflows to cause waste, so that the holding amount of the liquid optical glue in the air vent holes 15 can be increased by arranging the air escape holes 15 to be in a step shape.

A ninth embodiment of the present utility model provides an electronic device (not shown) including the lens assembly 10 described above. It is understood that electronic devices include, but are not limited to, cameras, AR glasses, VR glasses.

The electronic device includes a lens assembly 10, wherein the lens assembly 10 focuses at least two lenses included in a lens group 12 and is arranged in a lens barrel 11 in an adhesive manner, so that the optical performance of the assembled lens group 12 can be improved; the liquid optical cement is injected into the cement injection space through the cement injection hole 13, the cement injection space formed by the clearance between the lens and the inner wall 1111 of the cylinder 111 and the clearance between the adjacent two lenses is filled with the liquid optical cement, and the gas in the cement injection space is discharged through the air escape hole 15 in the cement injection process, so that the thickness of the optical cement between the lenses is uniform, no bubbles exist, and the filling efficiency of the optical cement is higher; in addition, because no engaging structure is needed between the lenses, the lens group 12 and the lens assembly 10 can be reduced in size.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Finally, it should be noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present utility model without departing from the spirit and scope of the technical solution of the present utility model.

Claims (10)

1. A lens assembly, comprising:

the lens barrel comprises a barrel body and a barrel head arranged at the upper end of the barrel body;

the lens group comprises at least two lenses which are stacked in the cylinder body, the lenses close to the cylinder head are adhered to the cylinder head, and a gap between the lenses and the inner wall of the cylinder body is communicated with a gap between two adjacent lenses to form a glue injection space;

the glue injection hole penetrates through the side wall of the lens barrel and is communicated with the glue injection space and the external space;

the filling colloid is arranged in the glue injection space;

at least one escape hole is arranged on the lens cone, the escape hole and the glue injection hole are separated and independently arranged, the escape hole penetrates through the side wall of the lens cone and is communicated with the glue injection space and the external space, and gas in the glue injection space is discharged out of the lens cone through the escape hole.

2. The lens assembly of claim 1, wherein one end of the glue injection hole and/or the air escape hole penetrates through the inner wall of the barrel body, and is arranged opposite to the bonding position of at least two adjacent lenses in one group.

3. The lens assembly of claim 1, wherein when the other end of the glue injection hole and/or the air escape hole penetrates the outer wall of the barrel, the glue injection hole and/or the air escape hole correspondingly comprises a first hole and a second hole which are communicated, the first hole penetrates the inner wall of the barrel, the second hole penetrates the outer wall of the barrel, and the inner diameter of the second hole is larger than the inner diameter of the first hole.

4. The lens assembly of claim 1, wherein the glue injection hole and/or the air escape hole penetrate through opposite sides of the barrel head along the optical axis direction so as to communicate with the glue injection space.

5. The lens assembly of claim 4, wherein the glue injection hole and/or the air escape hole is a stepped hole, and an inner diameter of a side of the glue injection hole and/or the air escape hole near the lens group is smaller than an inner diameter of a side far away from the lens group.

6. The lens assembly of claim 1, wherein one end of the glue injection hole and/or the air escape hole penetrates through the inner wall of the barrel body and is opposite to the bonding position of two adjacent lenses, and the other end of the glue injection hole and/or the air escape hole penetrates through the upper end of the barrel body.

7. The lens assembly of claim 1, wherein the lens group comprises a first lens group and a second lens group arranged in sequence, the first lens group being adjacent to the barrel head relative to the second lens group, the lens of the first lens group being a first lens and the lens of the second lens group being a second lens;

the lens assembly further comprises preassembled colloid, wherein the preassembled colloid is arranged at the joint of the first lens and the lens barrel and the joint of the second lens and the lens barrel, so that the first lens, the second lens and the lens barrel are adhered, the preassembled colloid is further arranged between the lens groups at intervals, and the first lens and the lens barrel and/or the second lens and the inner wall of the barrel are/is connected in a sealing mode.

8. The lens assembly of claim 7, wherein the first lens group and/or the second lens group comprises a third lens, the third lens is arranged between the first lens and the second lens, the pre-filled colloid is further arranged at the joint of the third lens and the cylinder body and is in sealing connection with the inner wall of the cylinder body, and the glue injection hole and the air escape hole are respectively and correspondingly connected with the bonding position between the first lens and the second lens and the bonding position between the second lens and the third lens.

9. The lens assembly of claim 1, wherein the lens is circumferentially spaced apart with a plurality of protruding structures, the plurality of protruding structures being located between two adjacent lenses.

10. An electronic device comprising a lens assembly according to any one of claims 1-9.