CN215416056U - Lens barrel, lens module and electronic equipment - Google Patents

Abstract

The utility model discloses a lens cone, a lens module and electronic equipment, wherein the lens cone comprises a top cover and a main body part, the top cover is buckled on the main body part, a third bent part is adaptive to the shape of the groove part and is contained in the groove, the end part of a second bent part is opposite to the step surface and has a gap to form a first glue containing groove, and the second bent part is connected with the main body part through a glue part filled in the first glue containing groove. The lens barrel is of a split structure, the problem that the through light hole is far away from the injection molding sprue to cause insufficient sharpness can be effectively solved, and further stray light is reduced.

Description

Lens barrel, lens module and electronic equipment

Technical Field

The present invention relates to a lens barrel structure, and more particularly, to a lens barrel, a lens module and an electronic device.

Background

In recent years, portable electronic devices having a beautiful appearance and a powerful photographing function have been increasingly favored. Therefore, in order to meet such a development demand, it has become a current trend to improve the imaging performance of the lens and the appearance thereof.

However, due to the limitations of the manufacturing process, many problems need to be solved. On the one hand, in order to reduce the generation of stray light, it is desirable that the annular port of the lens barrel at the light through hole is pointed, so that the reflection of light at the annular port can be reduced, and the generation of light spots can be reduced. However, since the lens barrel is generally integrally injection-molded, the annular port is often far away from the injection gate, so that the sharpness of the annular port often fails to meet the design requirement. On the other hand, plating is an important process for reducing reflection at the side of the lens barrel. However, in the process of assembling the lens barrel, the lens barrel needs to be subjected to a plurality of carrying and assembling steps after being coated with a film, and the coated part is easily scratched, so that the appearance of the lens barrel is difficult to meet the design requirement.

SUMMERY OF THE UTILITY MODEL

The utility model provides a lens barrel, a lens module and electronic equipment, which can solve the problems that the annular port of the lens barrel at a light through hole is not sharp enough in the forming process and the coated lens barrel is easily scratched in the assembling process.

In a first aspect, the present invention provides a lens barrel comprising:

the top cover is arranged around the optical axis of the lens barrel and comprises a body, a first bending part and a second bending part, wherein the first bending part is bent and extended from the paraxial position of the body to the image side, the second bending part is bent and extended from the paraxial position of the body to the image side, and the body, the first bending part and the second bending part surround the image side of the top cover to form a groove;

the main body part is arranged around the optical axis and positioned on one side of the opening of the groove, and comprises a cylinder body and a third bending part bent and extended from the object side end of the cylinder body to the optical axis, a positioning notch is formed in the outer edge of the object side end of the cylinder body from the object side to the image side, and a step surface is formed at the positioning notch by the main body part;

the top cover is buckled on the main body part, the third bent part is adaptive to the shape of the groove part and is contained in the groove, the end part of the second bent part is opposite to the step surface and is provided with a gap to form a first glue containing groove, and the second bent part is connected with the main body part through a glue part filled in the first glue containing groove.

Compared with the integrated lens barrel, the lens barrel has the advantages that the distance from the injection molding sprue to the through light hole of the lens barrel is reduced, and the injection molding quality is improved. The top cover is buckled and arranged on the main body part, so that good positioning can be realized, and the glue containing groove formed by encircling is used for containing glue to ensure that the top cover is fixedly connected with the main body part, so that the stability of the lens is ensured. In the assembling process, the top cover only needs to be coated, and the step of mounting the top cover can be put to the later stage of the working procedure, so that the flow of the coated part is reduced, the probability of being scratched and scratched is reduced, and the appearance of the lens barrel can meet the design requirement.

Furthermore, the inner side of the step surface is recessed towards the image side to form a second glue containing groove communicated with the first glue containing groove, and the glue part is also positioned in the second glue containing groove. The contact area of colloid and stack shell can be increased through setting up of second appearance gluey groove, and the volume of glue is held in the increase to improve the bonding reliability of top cap and the two of main part.

Further, a second bottom surface is arranged on one side, close to the main body portion, of the second bending portion, and the second bottom surface and the step surface are separated from each other. The arrangement can ensure that an opening exists between the top cover and the main body part, so that the glue is conveniently led in.

Further, the second bottom surface and the second top surface are both perpendicular to the optical axis. The arrangement ensures that the glue inlet of the glue containing groove has excellent shape and is convenient for glue dispensing.

Further, the second bending part comprises a first inner side surface, the third bending part comprises a first outer side surface, and the first inner side surface is parallel to the first outer side surface. This setting makes the in-process that the top cap assembled the main part thing side can rely on first medial surface with first lateral surface fixes a position, reduces the equipment degree of difficulty, promotes the equipment yield.

Further, the first inner side surface and the first outer side surface are parallel to the optical axis. This allows for increased concentricity after the overcap is in locating engagement with the body portion.

Furthermore, one side of the body, which is close to the main body portion, is provided with a first bottom surface, one side of the third bending portion, which is close to the top cover, is provided with a first top surface, and the first bottom surface is parallel to and attached to the first top surface. This arrangement enables the first bottom surface and the first top surface to be completely attached to each other, ensuring that the top cover and the main body are coaxial.

Furthermore, a first light through hole is formed in the top cover, a second light through hole coaxial with the first light through hole is formed in the main body portion, and the diameter of the first light through hole is smaller than that of the second light through hole. The arrangement ensures that incident light is only limited by the first light through hole, and the light is prevented from being shielded by the second light through hole.

In a second aspect, the present invention provides a lens barrel, including the lens barrel according to the first aspect, and a lens disposed in the lens barrel.

In a third aspect, the present invention provides a lens module, which includes a photosensitive chip and the lens of the second aspect, wherein the photosensitive chip is disposed on an image side of the lens.

In a fourth aspect, the present invention provides an electronic device, which includes a housing and the lens module set according to the third aspect, wherein the lens module set is disposed in the housing.

Compared with the prior art, the method has the following beneficial effects:

compared with the integrated lens barrel, the lens barrel has the advantages that the distance from the injection molding sprue to the through light hole of the lens barrel is reduced, and the injection molding quality is improved. The top cover is buckled and arranged on the main body part, so that good positioning can be realized, and the glue containing groove formed by encircling is used for containing glue to ensure that the top cover is fixedly connected with the main body part, so that the stability of the lens is ensured. In the assembling process, the top cover only needs to be coated, and the step of mounting the top cover can be put to the later stage of the working procedure, so that the flow of the coated part is reduced, the probability of being scratched and scratched is reduced, and the appearance of the lens barrel can meet the design requirement.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below.

Fig. 1 is a schematic structural view of a lens barrel in the related art.

Fig. 2 is a schematic structural diagram of a lens barrel according to an embodiment of the present invention.

Fig. 3 is a perspective view of the top cover assembled with the body.

Fig. 4 is a sectional view of the lens barrel in fig. 2.

Fig. 5 is a schematic structural view of a top cover of the lens barrel in fig. 2.

Fig. 5a is a sectional view of a top cover of the lens barrel in fig. 2.

Fig. 6 is a sectional view of a main body portion of the lens barrel in fig. 2.

Fig. 6a is a partially enlarged view of the lens barrel in fig. 6.

Fig. 7 is a schematic structural diagram of a lens provided in an embodiment of the present invention.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. As used herein, the terms "left", "right", "upper", "lower", and the like are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

In the related art, as shown in fig. 1, the lens barrel 200 is mostly of an integrated structure, and the lens barrel 200 is provided with at least one first injection molding notch 260 located at an image side end of the lens barrel 200, where the first injection molding notch 260 is used for corresponding to a position of a gate in a mold for molding the lens barrel 200. However, since the first injection molding notch 260 is located at a distance from the object side end of the lens barrel 200, the temperature of the fluid is reduced in the process of flowing from the first injection molding notch 260 to the position of the annular port 15 in the mold, which reduces the plastic deformation capability and makes it difficult to fill the mold, and therefore, the sharpness of the annular port 15 is difficult to meet the design requirement, and there may occur problems such as air holes, air bubbles, and short shots. The annular port 15 serves as a diaphragm under most conditions, and is very sensitive to the influence of light, and if the light irradiates on the annular port 15 with poor injection molding condition, strong stray light is very easily generated, and the imaging quality is seriously influenced.

Based on this, the application discloses a lens cone, camera lens module and electronic equipment, through setting up the lens cone into split type lens cone, promptly, the lens cone includes top cap and the main part of being connected with the top cap components of a whole that can function independently, like this, can be with top cap and main part injection moulding respectively, compare in the lens cone of integral type, reduced the distance of injection moulding runner to lens cone through hole department, improved injection moulding's quality.

The lens barrel, the lens module, and the electronic apparatus of the present application will be described in detail below with reference to the accompanying drawings.

Referring to fig. 2 to 4, in a first aspect of the present invention, a lens barrel 100 is provided, where the lens barrel 100 includes a top cover 10 and a main body 20, and the top cover 10 is positioned and fitted on an image side of the main body 20, and both are fixed by a fixing member 30. In this embodiment, the fixing member 30 is composed of a glue receiving groove 31 and glue 32. The lens barrel 100 also has an optical axis a. When the lens barrel 100 is assembled, the top cover 10 is coaxially fastened to the object side end of the main body portion 20, the top cover 10 and the main body portion 20 surround to form a glue accommodating groove 31 which is open in the direction away from the optical axis a, and the glue 32 enters from the opening of the glue accommodating groove 31 and is accommodated in the glue accommodating groove 31 for bonding and fixing the top cover 10 and the main body portion 20.

Further, at least one first injection molding cut 260 is provided on the main body portion 20, and at least one second injection molding cut 160 is provided on the top cover 10, and the top cover 10 has an annular port 15 near the optical axis a. Because the lens barrel 100 adopts a split design, the top cover 10 and the main body portion 20 are respectively injection molded, and the distance from the second injection molding cut 160 on the top cover 10 to the annular port 15 is far less than the distance from the first injection molding cut 260 on the main body portion 20 to the annular port 15. This arrangement ensures that the plastics material still has a suitable temperature when it reaches the location of the annular port 15 in the mould, ensuring the accuracy of the moulding, thereby reducing reflection of incident light by the annular port 15 and eliminating veiling glare.

In this embodiment, the number of the first injection molding cuts 260 and the second injection molding cuts 160 can be set to 4, and the first injection molding cuts and the second injection molding cuts are uniformly distributed around the optical axis a, so that the top cover 10 or the main body portion 20 can be more uniform in the injection molding process, and the defective rate can be reduced.

In addition, since the lens barrel 100 adopts a split design, in the assembling process, only the top cover 10 needs to be coated separately, and the step of mounting the top cover 10 to the main body portion 20 can be put to the later stage of the overall lens barrel assembling process, so that the processes of coating the film can be reduced, the probability of scratching and scratching the top cover 10 is reduced, and the appearance of the lens barrel can meet the design requirements.

Referring to fig. 5 and 5a, the top cover 10 is disposed around an optical axis a, and includes a main body 11, a first bending portion 12 bending and extending from a paraxial region of the main body 11 to an image side, a second bending portion 13 bending from a paraxial region of the main body 11 to the image side, and a first light passing hole 14 surrounded by the first bending portion 12. The first light passing hole 14 is arranged coaxially with the optical axis a. In the present embodiment, the first bent portion 12 is inclined with respect to the body 11, and the second bent portion 13 is perpendicular to the body 11.

More specifically, the annular port 15 is located at a position where the first bending portion 12 is closest to the optical axis a, and the aperture of the annular port 15 can be flexibly designed according to requirements, and can function as a diaphragm.

The body 11, the first bent portion 12 and the second bent portion 13 together form an annular groove 16, and the opening of the groove 16 faces the main body portion 20. The groove 16 includes a first bottom surface 111 on the image side of the body 11, a first inclined surface 121 on the distal side of the first bent portion 12, and an inner side surface 131 on the proximal side of the second bent portion 13. The first bottom surface 111 connects the first inclined surface 121 and the first inner side surface 131.

In this embodiment, the first bending portion 12 and the paraxial surface thereof are disposed obliquely with respect to the optical axis a to ensure that light is not blocked when entering at a large angle, and the second bending portion 13 is disposed parallel to the optical axis a to ensure that the top cover 10 and the main body portion 20 are positioned and matched.

In this embodiment, the first bottom surface 111 may be configured as an annular surface perpendicular to the optical axis a, so as to ensure the coaxiality of the top cover 10 and the main body 20 after positioning and matching; the first inclined surface 121 can be a conical surface close to the image side at the near shaft end, so that the forming is easy; the first inner side surface 131 is an annular surface parallel to the optical axis a, which facilitates the positioning and matching of the top cover 10 and the main body 20.

Referring to fig. 6 and 6a, the main body portion 20 is disposed around the optical axis a, and includes a barrel 21 and a third bending portion 22 bending and extending from an object-side end of the barrel 21 to the optical axis a, an outer edge of the object-side end of the barrel 21 is recessed toward a side away from the top cover 10 to form a positioning gap 25, the positioning gap 25 is stepped, and a step surface 23 perpendicular to the optical axis a is formed at the positioning gap 25, a second glue accommodating groove 27 is recessed from an inner side of the positioning gap 25 to an image side, a remaining portion of the recessed step surface 23 is a second top surface 231, a second light passing hole 24 is defined by the third bending portion 22, and the second light passing hole 24 is coaxial with the optical axis a and has a larger aperture than the first light passing hole 14, and is not used as a diaphragm.

The third bending portion 22 includes a first top surface 221 located on the object side, a second inclined surface 222 near the proximal axis side, and a first outer side surface 223 far from the distal axis side, the first top surface 221 connects the second inclined surface 222 and the first outer side surface 223, and the inner and outer diameters of the first top surface 221 and the first bottom surface 111 are the same.

The specific shape and size of the third bending portion 22 should be adapted to the shape of the groove 16, so as to ensure that the third bending portion 22 can be accommodated in the groove 16, and the first bottom surface 111 and the first top surface 221, the first inclined surface 121 and the second inclined surface 222, and the first inner side surface 131 and the first outer side surface 223 can be attached to each other. This arrangement ensures that the top cover 10 and the main body 20 can be positioned and matched by means of the groove 16 and the third bending portion 22, and ensures that the top cover 10 can be stably fixed on the main body 20.

The shape of the second glue receiving groove 27 may be a step shape extending toward the paraxial direction and away from the top cover 10, and the second glue receiving groove 27 may be one step or multiple steps. In this embodiment, the second glue containing groove 27 is recessed toward a direction away from the top cover 10 along the paraxial axis a and has only one step, which is helpful for reducing the complexity of the lens structure and improving the yield of injection molding, the radial cross section of the second glue containing groove 27 is substantially U-shaped, and specifically includes a second inner side surface 232 bent from the paraxial end of the second top surface 231 toward the image side, and a third top surface 233 bent from the image side end of the second inner side surface 232 toward the paraxial direction, and the third top surface 233 is connected to the first outer side surface.

Referring to fig. 3 and 4 again, when the top cover 10 and the main body 20 are assembled into the lens barrel, the first inner side surface 131 and the first outer side surface 223 are attached to achieve a guiding effect, so that the top cover 10 is coaxially fastened to the object-side end of the main body 20 until the third bending portion 22 is accommodated in the groove 16, and the second bending portion 13, the third bending portion 22 and the positioning notch 25 surround to form a glue accommodating groove 31. Specifically, when the top cover 10 is covered and connected to the main body portion 20, a glue accommodating groove 31 is formed between the two, that is, the glue accommodating groove 31 is surrounded by the first outer side surface 223, the second top surface 231, the second inner side surface 232, the third top surface 233, and the second bottom surface 132 located at the image side end of the second bending portion 13. Thus, after the glue 32 is injected into the glue containing groove 31, the top cover 10 and the main body 20 are assembled and fixed, and the assembly is completed.

It should be noted that the second bottom surface 132 is perpendicular to the optical axis, and the length of the first outer side surface 223 along the optical axis direction is greater than the length of the first inner side surface 131 along the optical axis direction, so that the second bottom surface 132 is not in contact with the third top surface 233, thereby ensuring that the glue containing groove 31 has an opening for injecting the glue 32.

In some embodiments, the glue receiving groove 31 includes a first glue receiving groove 26 and a second glue receiving groove 27 that are communicated with each other. Specifically, the first glue containing groove 26 is formed between the step surface 23 and the second bottom surface 132, the first glue containing groove 26 is used for bonding the top cover 10 and the main body portion 20, and the second glue containing groove 27 can further expand a glue containing space and increase a contact area between the glue 32 and the main body portion 20, so as to improve the structural stability of the lens barrel.

Referring to fig. 7, a second aspect of the present invention provides a lens barrel 300, including the lens barrel 100, the lens 301, the spacer 302, and the light shielding sheet 303 of the first aspect. In this embodiment, the top cover at the object side end is a separately formed element, and the annular port 15 is more sharp, so as to improve the imaging quality. The lenses 301 are arranged in sequence from the object side to the image side along the optical axis direction, and are used for incident light. The light shielding sheet 303 is sandwiched between the two lenses 301, and is used for limiting the trend of light rays in the lens barrel and blocking ineffective light rays. Illustratively, the light shielding sheet 303 is two sheets, and each light shielding sheet is sandwiched between two adjacent sheets of three lenses near the object side end. The space ring 302 is clamped between two lenses near the image side end for separating the lenses to ensure the distance of the optical design.

The third aspect of the present invention provides a lens module, which includes a photosensitive chip and the lens, where the photosensitive chip is disposed on an image side of the lens.

A fourth aspect of the present invention provides an electronic device, which includes a housing and the lens module described above, where the lens module is disposed in the housing.

It is to be understood that the electronic device may include, but is not limited to, a cell phone, a tablet computer, a smart watch, and the like.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A lens barrel, provided around an optical axis, comprising:

the top cover is arranged around the optical axis of the lens barrel and comprises a body, a first bending part and a second bending part, wherein the first bending part is bent and extended from the paraxial position of the body to the image side, the second bending part is bent and extended from the paraxial position of the body to the image side, and the body, the first bending part and the second bending part surround the image side of the top cover to form a groove;

the main body part is arranged around the optical axis and positioned on one side of the opening of the groove, and comprises a cylinder body and a third bending part bent and extended from the object side end of the cylinder body to the optical axis, the outer edge of the object side end of the cylinder body is provided with a positioning notch from the object side to the image side, and the positioning notch is provided with a step surface;

the top cover is buckled on the main body part, the third bent part is adaptive to the shape of the groove and is contained in the groove, the end part of the second bent part is opposite to the step surface and is provided with a space to form a first glue containing groove, and the second bent part is connected with the main body part through a glue part filled in the first glue containing groove.

2. The lens barrel according to claim 1, wherein a side of the step surface close to the optical axis is recessed toward an image side to form a second glue receiving groove in communication with the first glue receiving groove, and the glue portion is further located in the second glue receiving groove.

3. The lens barrel according to claim 1, wherein an end of the second bending portion has a second bottom surface, and the second bottom surface and the step surface are spaced apart from each other to form a first glue receiving groove.

4. The lens barrel according to claim 3, wherein the second bottom surface and the step surface are perpendicular to the optical axis.

5. The lens barrel according to claim 1, wherein the second bending portion includes a first inner side surface, the third bending portion includes a first outer side surface, and the first inner side surface and the first outer side surface are both parallel to the optical axis.

6. The lens barrel according to claim 1, wherein a first bottom surface is disposed on a side of the body close to the main body portion, and a first top surface is disposed on a side of the third bending portion close to the top cover, and the first bottom surface is parallel to and attached to the first top surface.

7. The lens barrel according to claim 1, wherein the top cover has a first light passing hole formed therein, the main body has a second light passing hole formed therein coaxially with the first light passing hole, and a diameter of the first light passing hole is smaller than a diameter of the second light passing hole.

8. A lens barrel according to any one of claims 1 to 7, and a lens disposed in the lens barrel.

9. A lens module comprising a photo sensor chip, wherein the lens module further comprises the lens of claim 8, and the photo sensor chip is disposed on the image side of the lens.

10. An electronic device comprising a housing and the lens module as claimed in claim 9, wherein the lens module is disposed in the housing.

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