CN216013779U - Lens and camera module - Google Patents

Abstract

The utility model provides a lens and a camera module, wherein the lens comprises a lens cone and a lens, one end of the lens cone is provided with a containing groove with the size and the shape matched with the lens, the lens is arranged in the containing groove, the lens is fixedly bonded with the lens cone by utilizing a glue dispensing part positioned at the bottom of the containing groove, the lens cone is also provided with a gas channel, and the gas channel is communicated with the glue dispensing part and the external environment of the lens. The dispensing part is communicated with the external environment of the lens through the gas channel, so that the escape of trapped gas between the lens barrel and the lens is realized, and the influence of quality defects such as bubbles and holes on the contact surface of the lens and glue on the air tightness of the lens is avoided.

Description

Lens and camera module

Technical Field

The utility model relates to the technical field of camera equipment, in particular to a lens and a camera module.

Background

As shown in fig. 8, the conventional lens barrel includes a lens assembly and a lens barrel. The lens assembly includes a plurality of stacked lenses, wherein the assembly process of the surface lens located on the side closest to the user directly affects the sealing performance of the lens, and the surface lens is referred to as lens G1. In the prior art of lens assembly, the bottom of the lens G1 and the lens barrel a are adhered by glue by a glue dispensing method. Specifically, the lens assembly method includes: stacking a plurality of lenses other than the lens G1 upward from the mounting reference surface of the lens barrel a; dispensing at a preset position of the lens barrel A; the lens G1 is pressed into the barrel a and brought into contact with the glue to complete the bonding.

After the lens G1 is pressed in, the lens barrel A and the glue and the lens G1 and the glue need to be bonded sufficiently, so that the bonding area is ensured, and the waterproof requirement is met. The contact area between the lens barrel A and the glue is ensured by the self weight of the glue and the fluidity of the glue, but not between the lens G1 and the glue. In the prior art, in the process of pressing the lens G1 into the lens barrel a, because the lens barrel a and the lens G1 are in a close fit relationship, a problem of air trapping occurs between the lens barrel a and the lens G1, in other words, in the process of pressing the lens G1 into the lens barrel a, air cannot be discharged and is trapped in the space between the lens G1 and the lens barrel a due to extrusion, and a part of air is pressed into the space between the glue or the glue and the lens G1, so that quality defects such as bubbles and voids are generated at the bonding part of the glue and the lens G1, and further the contact area between the glue and the lens G1 is reduced, the bonding strength of the lens G1 is reduced, and the air tightness of the lens is affected.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides a lens and a camera module, wherein the dispensing part and the external environment of the lens are communicated through a gas channel, so that trapped gas between a lens barrel and a lens can escape, and the influence of quality defects such as bubbles and holes on the contact surface of the lens and glue on the air tightness of the lens is avoided.

The lens barrel comprises a lens barrel body and a lens, wherein one end of the lens barrel body is provided with an accommodating groove which is matched with the lens in size and shape, the lens is arranged in the accommodating groove, the lens is fixedly bonded with the lens barrel body by utilizing a glue dispensing part positioned at the bottom of the accommodating groove, the lens barrel body is also provided with a gas channel, and the gas channel is communicated with the glue dispensing part and the external environment of the lens.

According to the technical scheme, the gas channel is communicated with the dispensing part and the external environment of the lens, when the lens is pressed into the lens barrel, gas between the lens and the lens barrel can be discharged from the gas channel, so that the phenomenon that the trapped gas between the lens barrel and the lens extrudes glue is avoided, quality defects such as bubbles and holes are easily caused on the contact surface of the lens and the glue, the bonding area of the lens and the lens barrel is affected, and the air tightness of the lens cannot be guaranteed.

Further, in an optional technical scheme of the present invention, a groove is provided at a portion of the inner side wall of the accommodation groove overlapping with the outer peripheral portion of the lens, and the groove forms a gas channel.

According to the technical scheme, the grooves are formed in the overlapped part of the inner side wall of the accommodating groove and the outer peripheral part of the lens to form the gas channel, so that the gas between the inner side wall of the accommodating groove and the outer peripheral part of the lens can conveniently escape.

Further, in an alternative aspect of the present invention, the groove extends in an axial direction of the lens.

According to the technical scheme, the groove is favorable for shortening the path of gas escape along the axial direction of the lens, and the efficiency of gas escape is improved.

Further, in an optional technical solution of the present invention, an extending direction of the groove is inclined to an axial direction of the lens.

Compared with the grooves extending in the axial direction with the same density degree, the grooves extending in the inclined direction can increase the size of the cross section of the gas channel and improve the exhaust capacity of the gas channel.

Further, in an optional technical scheme of the utility model, a plurality of reinforcing ribs are arranged on the inner side wall of the accommodating groove, the groove is positioned among the plurality of reinforcing ribs, and the section of each reinforcing rib is one of trapezoid, triangle, fan or rectangle.

According to the technical scheme, the grooves are formed by arranging the plurality of reinforcing ribs, so that the processing difficulty of the grooves is reduced, and the processing efficiency of the lens is improved; the section of the reinforcing rib has multiple choices, and the processing convenience is improved.

Further, in an optional aspect of the present invention, the gas channel is a through hole opened on the lens barrel.

According to the technical scheme, the lens barrel is provided with the through hole, so that the escape of gas can be promoted, the defect that the contact surface of the lens and the glue easily causes bubbles, holes and the like due to the fact that the trapped gas extrudes the glue is avoided, the bonding area is affected, and the air tightness cannot be guaranteed is overcome.

Further, in an alternative aspect of the present invention, the through hole extends in a radial direction of the lens barrel.

According to the technical scheme, the through hole extends along the radial direction of the lens barrel, so that the escape of gas between the lens barrel and the accommodating groove is facilitated. In some embodiments, since the lens for the camera module generally faces the external environment, the gas outlet of the through hole is disposed at the side of the lens, so that dust, splatter, and the like in the external environment can be reduced from entering the lens through the through hole. In addition, compared with the through hole which is arranged at the bottom of the glue dispensing slot and extends in the axial direction, the through hole which extends in the radial direction can also avoid the glue from flowing into and blocking the through hole by reasonably setting the opening height of the through hole.

Further, in an optional technical scheme of the present invention, the dispensing portion includes a sealant and a dispensing slot, and the sealant is accommodated in the dispensing slot.

According to the technical scheme, the shape of the sealant can be limited by the arrangement of the dispensing groove, and the mounting precision of the lens cone and the lens is improved.

Further, the inside wall of holding tank is equipped with the heliciform strengthening rib, and the recess is located between the heliciform strengthening rib. Compare in the strengthening rib that a plurality of intervals set up, the heliciform strengthening rib that sets up in succession has increased the area of contact between strengthening rib and lens, the inside wall, has improved the stability of camera lens structure.

The utility model also provides a camera module with the lens.

Drawings

Fig. 1 is a schematic perspective view of a lens barrel according to a first embodiment of the present invention.

Fig. 2 is a partial cross-sectional view of a lens barrel according to a first embodiment of the present invention.

Fig. 3 is a partial perspective view of a lens barrel according to a first embodiment of the present invention.

Fig. 4 is a schematic plan view of a lens barrel according to a first embodiment of the present invention.

Fig. 5 is a partial schematic plan view of a lens barrel according to a first embodiment of the present invention.

Fig. 6 is a partial cross-sectional view of a lens barrel according to a second embodiment of the present invention.

Fig. 7 is a partial perspective view of a lens barrel according to a third embodiment of the present invention.

Fig. 8 is a partial cross-sectional view of a lens in the related art.

Reference numerals:

the prior art is as follows: g1-lens; a-a lens barrel;

the utility model comprises the following steps: 1-a lens barrel; 11-a holding tank; 111-an inner side wall; 2-a lens; 21-an outer peripheral portion; 3-a gas channel; 30-a groove; 31-reinforcing ribs; 32-through holes; 4-glue dispensing part; 41-sealing glue; 42-glue dispensing groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

[ first embodiment ] to provide a liquid crystal display device

Fig. 1 is a schematic perspective view of a lens barrel according to the present embodiment, and fig. 2 is a schematic partial cross-sectional view of the lens barrel according to the present embodiment. Fig. 3 is a schematic partial perspective view of the lens barrel according to the present embodiment. Referring to fig. 1, 2 and 3, the present embodiment provides a lens barrel including a lens barrel 1 and a lens 2, wherein one end of the lens barrel 1 has an accommodating groove 11 (a circular area represented by a dotted line in fig. 1) having a size and a shape matching the lens 2, the lens 2 is disposed in the accommodating groove 11, the lens 2 is adhered and fixed to the lens barrel 1 by a dispensing portion 4 located at the bottom of the accommodating groove 11, the lens barrel 1 is further provided with an air channel 3, and the air channel 3 communicates the dispensing portion 4 with an external environment of the lens barrel.

Through the way, the dispensing part 4 is communicated with the external environment of the lens 1, when the dispensing action is finished, the lens 2 is pressed into the accommodating groove 11 of the lens barrel 1 and the dispensing part 4 is extruded, due to the existence of the gas channel 3, the gas between the lens 2 and the lens barrel 1 and between the lens 2 and the dispensing part 4 can be discharged from the gas channel 3, the gas is prevented from being limited between the lens barrel 1 and the lens 2 or in the dispensing part 4, the lens barrel 1 and the dispensing part 4 and the lens 2 and the dispensing part 4 can be fully bonded, the bonding area between the lens barrel 1 and the dispensing part 4 and between the lens 2 and the dispensing part 4 is ensured, the airtight seal is formed, the defect that the trapped gas in the prior art extrudes the dispensing part 4 is overcome, the quality defects such as bubbles, cavities and the like are easily caused on the contact surface of the lens 2 and the dispensing part 4, and the bonding area is influenced, the air tightness of the lens cannot be ensured.

In the present embodiment, the lens 2 is a surface lens provided on the side of the lens closest to the user, and only a part of the lens 2 is shown in fig. 1 and 3 for the convenience of showing the gas channel 3. The inventive concept of the present invention can also be applied to surface layer lenses at other positions to improve the bonding effect during assembly, which is not limited in the present invention.

Further, as shown in fig. 3, in the preferred embodiment of the present invention, a groove 30 is provided in a portion of the inner wall 111 of the housing groove 11, which overlaps with the outer peripheral portion 21 of the lens 2, and the groove 30 constitutes the gas channel 3.

In this way, the gas channel 3 is formed by the groove 30 formed at the overlapping portion of the inner side wall 111 of the accommodating groove 11 and the outer peripheral portion 21 of the lens 2, and the gas channel 3 communicates the dispensing portion 4 with the external environment of the lens, so that the trapped gas between the inner side wall 111 of the accommodating groove 11 and the outer peripheral portion of the lens 2 can escape conveniently.

Further, in the preferred embodiment of the present invention, as shown in fig. 4 and 5, the groove 30 extends in the axial direction of the lens.

In this way, the groove 30 is favorable for shortening the escape path of the trapped gas along the axial direction of the lens, so that the escape of the trapped gas is accelerated, and further quality defects such as bubbles and cavities generated on the contact surface of the lens 2 and the dispensing part 4 are avoided.

In other embodiments, the extending direction of the groove 30 may be oblique to the axial direction of the lens.

Compared with the grooves 30 extending in the axial direction with the same density degree, the grooves 30 extending in the oblique direction can increase the size of the cross section of the gas passage 3, and improve the exhaust capacity of the gas passage 3.

Further, in the preferred embodiment of the present invention, a plurality of ribs 31 are disposed on the inner sidewall 111 of the receiving groove 11, the groove 30 is disposed between the plurality of ribs 31, and the ribs 31 have one of a trapezoidal, triangular, fan-shaped or rectangular cross section.

In this way, set up many strengthening ribs 31 of interval arrangement on the inside wall 111 of holding tank 11, the clearance between the adjacent strengthening rib 31 constitutes recess 30, under the condition that does not change former lens cone 1 structure, add strengthening rib 31 and form recess 30 and supply stranded gas to escape, reduced lens cone 1's the processing degree of difficulty, be favorable to improving the machining efficiency of camera lens. The section of the reinforcing rib 31 has various choices, and the convenience and the flexibility of processing are improved.

Further, the root of the reinforcing rib 31 is lower than the contact surface of the lens 2 and the sealant 41, so that interference caused by a process fillet is prevented, smoothness of the gas channel 3 is influenced, and trapped gas cannot escape smoothly.

Further, the surface of the lens barrel 1 and the lens 2 in the prior art are matched with each other, and is a complete circular curved surface, and the optical axis precision of the lens is determined by the curved surface. In the present embodiment, the plurality of ribs 31 are annularly and uniformly distributed on the contact surface between the outer peripheral portion 21 of the lens 2 and the lens barrel 1, the lens optical axis is determined by the roundness of the inscribed circle formed by the plurality of ribs 31 and the coaxiality of the inscribed circle relative to the reference axis, and the roundness and the coaxiality of the inscribed circle formed by the plurality of ribs 31 and the coaxiality of the reference axis can be corrected by adjusting the dimensions of the rib curved surface of the inner sidewall 111 of the accommodating groove 11 where the ribs 31 are located (specifically, the roundness and the coaxiality of the inscribed circle formed by the plurality of ribs 31 and the coaxiality of the reference axis can be adjusted by adjusting the radian, the radial dimension and the positional relationship of the plurality of ribs 31 relative to the reference axis), in which the plurality of ribs 31 are annularly arranged on the inner sidewall 111 of the accommodating groove 11, so as to facilitate the adjustment of the roundness and the coaxiality dimensions of the lens barrel 2, reduce the die repairing difficulty of the lens die, and shorten the product trial cycle, is beneficial to improving the production and processing efficiency.

As shown in fig. 3, 4 and 5, the rib 31 has a rectangular block shape, and two surfaces of the rectangular block-shaped rib 31 facing in the lens radial direction are respectively closely attached to the inner wall 111 of the accommodation groove 11 and the lens 2.

In other embodiments of the present invention, the cross-sectional shape of the reinforcing rib 31 taken along a section perpendicular to the axial direction is trapezoidal; further, the lower base (i.e., the outer base in the radial direction) of the trapezoid is connected to the inner sidewall 111 of the receiving groove 11, the upper base (i.e., the inner base in the radial direction) of the trapezoid is far away from the inner sidewall 111 of the receiving groove 11, and the length of the lower base is greater than that of the upper base, so that the connection stability between the reinforcing rib 31 and the inner sidewall 111 of the receiving groove 11 is increased.

In other embodiments of the present invention, the cross-sectional shape of the rib 31 taken along a section perpendicular to the axial direction is a triangle, such as an isosceles obtuse triangle, and the obtuse angle is far away from the inner sidewall 111 of the accommodating groove 11.

Furthermore, chamfers may be disposed between the ribs 31 and the inner walls 111 of the receiving grooves 11 to make the ribs 31 and the inner walls 111 of the receiving grooves 11 smoothly transition.

Through the mode, set up recess 30 on lens cone 1 with the external environment of intercommunication point gluey portion 4 and camera lens, also can promote the escape of stranded gas to avoid stranded gas to extrude point gluey portion 4, make lens 2 and 4 contact surfaces of point gluey portion cause bad defects such as bubble, cavity easily, influence lens 2 and the bonding area of some gluey portion 4, point gluey portion 4 and lens cone 1, the gas tightness of camera lens can't reach the assurance.

As shown in fig. 2, in the preferred embodiment of the present invention, the dispensing portion 4 includes a sealant 41 and a dispensing slot 42, and the sealant 41 is accommodated in the dispensing slot 42.

Through the mode, the position of the sealant 41 can be limited by the arrangement of the dispensing groove 42, and the installation precision of the lens barrel 1 and the lens 2 is improved. Specifically, the glue dispensing groove 42 is annular and is arranged inside the accommodating groove 11, the sealant 41 is leveled and cured in the annular glue dispensing groove 42, and the arrangement of the annular glue dispensing groove 42 is beneficial to increasing the contact area between the lens 2 and the sealant 41, between the lens cone 1 and the sealant 41, improving the bonding stability and ensuring the air tightness of the lens.

The local part in the present invention means that the lens structure does not include the lens 2 or includes a part of the lens 2.

[ second embodiment ]

The second embodiment of the present invention provides a lens barrel which is different from the first embodiment in that, as shown in fig. 6, the gas passage 3 is a through hole 32 opened in the lens barrel 1. Specifically, the through hole 32 is opened in the contact surface between the lens barrel 1 and the outer peripheral portion 21 of the lens 2.

Through set up perforating hole 32 on lens cone 1 for some glue groove 42 and the external environment intercommunication of camera lens, the stranded gas between lens 2 and some glue groove 3 escapes through perforating hole 32, thereby avoids the sealed glue 41 of stranded gas extrusion, and the contact surface of lens 2 and sealed glue 41 causes quality defects such as bubble, cavity easily to and influence the bonded area, and defects such as gas tightness can't reach assurance.

Further, in the preferred embodiment of the present invention, the through-hole 32 extends in the radial direction of the lens barrel 1.

Through the above manner, the through hole 32 extends along the radial direction of the lens barrel 1, which is beneficial to shortening the escape path of the trapped gas between the lens 2 and the dispensing part 4 and accelerating the escape of the trapped gas. In some embodiments, since the lens for the camera module generally faces the external environment, the gas outlet of the through hole 32 is disposed at the side of the lens, so that dust, splatter, and the like in the external environment can be reduced from entering the lens through the through hole 32. In addition, compared with the through hole 32 extending in the axial direction and formed at the bottom of the dispensing groove 42, the through hole 32 extending in the radial direction can prevent the glue from flowing into and blocking the through hole 32 by properly setting the opening height of the through hole 32. The positions of the through holes 32 shown in fig. 6 are merely illustrative and do not represent actual opening positions of the through holes 32, and those skilled in the art can adjust the opening heights of the through holes 32 according to actual conditions.

Further, in the preferred embodiment of the present invention, the number of the through holes 32 may be one or more, and the arrangement of the plurality of through holes 32 increases the number of the gas channels 3, that is, increases the escape path of the trapped gas, so that the trapped gas near the through holes 32 can escape more quickly, and the influence on the adhesion between the lens 2 and the sealant 41 can be avoided.

Further, in the present embodiment, the gas channel 3 may be a combination of the through hole 32 and the groove 30, and the number of the through hole 32 and the number of the ribs 31 are reasonably arranged, so that the trapped gas can escape in both the lens axial direction where the groove 30 is located and the radial direction where the through hole 32 is located, thereby improving the escape efficiency of the trapped gas.

[ third embodiment ]

As shown in fig. 7, a third embodiment of the present invention provides a lens having substantially the same structure as the lens of the first embodiment, except that the ribs 31 are spiral ribs provided on the inner side wall 111 of the accommodation groove 11, and the spiral spaces between the spiral ribs constitute the gas channels 3, i.e., the grooves 30. In this embodiment the helical rib rotates one revolution and the gap between the two ends of the helical rib forms the outlet of the gas channel 3. In other embodiments, the number of the rotation cycles of the spiral reinforcing rib may be two or half of a cycle, and the skilled person can adjust the number of the rotation cycles of the spiral reinforcing rib according to actual situations, which is not limited by the present invention.

Through the mode, compare the strengthening rib 31 that a plurality of intervals set up, the heliciform strengthening rib that sets up in succession has increased the area of contact of strengthening rib 31 with lens 2 and inside wall 111, has improved the stability of lens structure.

The utility model also provides a camera module which is provided with any one of the lenses provided in the first embodiment, the second embodiment or the third embodiment.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A lens comprises a lens barrel and lenses, wherein one end of the lens barrel is provided with a containing groove with a size and a shape matched with the lenses, the lenses are arranged in the containing groove, and the lenses are bonded and fixed with the lens barrel by utilizing a dispensing part positioned at the bottom of the containing groove.

2. The lens barrel according to claim 1, wherein a groove is provided in a portion of an inner side wall of the accommodation groove which overlaps with an outer peripheral portion of the lens, the groove constituting the gas passage.

3. A lens barrel according to claim 2, wherein the groove extends in an axial direction of the lens barrel.

4. A lens barrel according to claim 2, wherein an extending direction of the groove is inclined to an axial direction of the lens barrel.

5. The lens barrel according to claim 3 or 4, wherein a plurality of ribs are provided on an inner side wall of the receiving groove, the groove is located between the plurality of ribs, and a cross section of the rib is one of trapezoidal, triangular, fan-shaped or rectangular.

6. The lens barrel according to claim 1, wherein the gas passage is a through hole opened in the lens barrel.

7. The lens barrel according to claim 6, wherein the through hole extends in a radial direction of the lens barrel.

8. The lens barrel as claimed in claim 1, wherein the dispensing portion includes a sealant and a dispensing groove, the sealant being received in the dispensing groove.

9. The lens barrel according to claim 2, wherein inner side walls of the receiving groove are provided with spiral ribs, and the groove is located between the spiral ribs.

10. A camera module, characterized in that the camera module has a lens barrel according to any one of claims 1 to 9.

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