CN210051953U - Lens module and image capturing device with same - Google Patents

Abstract

The utility model provides a camera lens module and have its getting for instance equipment, wherein, the camera lens module includes: the lens cone is provided with an accommodating cavity, the accommodating cavity comprises a plurality of installation cavity body sections and transition cavity body sections, two adjacent installation cavity body sections are communicated through one transition cavity body section, the cross sectional areas of the installation cavity body sections are sequentially increased along the direction from the first axial end of the lens cone to the second axial end of the lens cone, and the wall surface of each transition cavity body section comprises at least one installation ring surface inclined to the central axis of the lens cone; the lens is installed in the position department of at least partly installation cavity section in a plurality of installation cavity sections, and the partial periphery face of at least one lens pastes close fit with the mounting ring face to spacing lens. The utility model discloses a solved the structure of miniature camera lens module among the prior art unreasonable, there is the equipment precision poor and influence the imaging quality's of miniature camera lens module problem.

Description

Lens module and image capturing device with same

Technical Field

The utility model relates to an optics field particularly, relates to a structural improvement of miniature camera lens module.

Background

With the rapid development of the mobile internet, portable electronic devices such as mobile phones, tablet computers, light and thin notebooks and the like are closer to the daily life of people, people are interested in taking pictures or recording videos through the electronic devices to record and share the life trends or work trends of the people, and higher requirements are provided for the imaging quality of the miniature camera lens module of the portable electronic device.

In the existing technology for manufacturing the miniature camera lens module, the lenses of the miniature camera lens module are usually combined together in a stacking or fitting manner through non-optical parts, in the assembly process of the miniature camera lens module, when a plurality of subsequent lenses are sequentially assembled into the lens barrel, the lenses subsequently assembled into the lens barrel can extrude the lenses of the lens barrel which are assembled in the previous process, extrusion stress can occur among the lenses, when the extrusion stress is too large, the lenses can deform or the assembly distance between the lenses changes, thus, the imaging quality of the miniature camera lens module with the lenses sensitive to tolerance can be seriously influenced, further, the imaging performance of corresponding electronic equipment can be deteriorated, the product quality of the electronic equipment is influenced, and the use experience of a user on the electronic equipment is reduced.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a lens module and image capturing device having the same, which are used to solve the problem of the prior art that the structure of the micro camera lens module is unreasonable, and the assembly precision is poor and the imaging quality of the micro camera lens module is affected.

In order to achieve the above object, according to an aspect of the present invention, there is provided a lens module including: the lens cone is provided with an accommodating cavity, the accommodating cavity comprises a plurality of installation cavity body sections and transition cavity body sections, two adjacent installation cavity body sections are communicated through one transition cavity body section, the cross sectional areas of the installation cavity body sections are sequentially increased along the direction from the first axial end of the lens cone to the second axial end of the lens cone, and the wall surface of each transition cavity body section comprises at least one installation ring surface inclined to the central axis of the lens cone; the lens is installed in the position department of at least partly installation cavity section in a plurality of installation cavity sections, and the partial periphery face of at least one lens pastes close fit with the mounting ring face to spacing lens.

Further, an inclined installation included angle theta is formed between one of the at least one installation ring surface close to the central axis of the lens barrel and the central axis.

Further, the inclined installation included angle θ is equal to or greater than 10 ° and equal to or less than 25 °.

Further, a radial extension length L of one of the at least one mounting ring surface close to the central axis of the lens barrel is greater than or equal to 0.05mm and less than or equal to 0.3 mm.

Further, the inclined extension length L of the mounting ring surface is more than or equal to 0.1mm and less than or equal to 0.2 mm.

Furthermore, the transition cavity section is a plurality of, and each transition cavity section includes at least two mounting ring faces, wherein, lens and one mounting ring face that is close to the center axis of lens cone among at least two mounting ring faces are close fit.

Furthermore, the outer peripheral surface of the lens, which is tightly matched with the mounting ring surface, is a non-optical part of the lens.

Further, the lens module further comprises a gasket, the gasket is arranged in the accommodating cavity, and one gasket is selectively arranged between every two adjacent lenses.

Further, the lens module further comprises a light shielding sheet, the light shielding sheet is arranged in the accommodating cavity, and one light shielding sheet is selectively arranged between every two adjacent lenses.

Furthermore, the axial first end of the lens cone is provided with a radial bending section, the radial bending section is used for stopping one lens located at the position of the axial first end of the lens cone, the lens module further comprises a pressing ring, the pressing ring is arranged at the axial second end of the lens cone, and the pressing ring is used for pressing one lens located at the position of the axial second end of the lens cone.

According to the utility model discloses an on the other hand provides an get for instance equipment, including foretell camera lens module.

By applying the technical scheme of the utility model, through optimizing the structure of the lens cone of the lens module, after the lens is installed in the accommodating cavity of the lens cone, the installation ring surface of the transition cavity section of the accommodating cavity, which is inclined to the central shaft of the lens cone, can be used as a buckling position to play a role in limiting and installing the lens, thereby effectively improving the stress distribution among the lenses, avoiding the generation of larger contact stress due to excessive extrusion among the lenses, and further preventing the lens from being deformed due to too large stress; moreover, the specific structure of lens cone can also the assembly interval between the accurate control lens to be favorable to improving the assembly precision of camera lens module, promote the imaging quality of camera lens module, improve the production yield of camera lens module, and then can make the getting for instance performance of getting for instance equipment that is equipped with the camera lens module of this application can promote, improved electronic equipment's product quality, improved the user and experienced good sense to electronic equipment's use.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic partial cross-sectional view of a lens module according to a first embodiment of the present invention;

FIG. 2 shows an enlarged schematic view at A in FIG. 1;

fig. 3 is a partially enlarged view of fig. 2 showing a state where the lens barrel and the lens of the lens module are closely attached at the mount ring surface;

fig. 4 is a partial schematic sectional structural view showing a lens barrel of the lens module of fig. 1;

FIG. 5 shows an enlarged schematic view at B in FIG. 4;

FIG. 6 shows an enlarged schematic view at C in FIG. 4;

FIG. 7 shows a schematic cross-sectional view of a portion of the lens module of FIG. 1;

FIG. 8 shows an enlarged schematic view at D in FIG. 7;

fig. 9 is a schematic partial cross-sectional view of a lens module according to a second embodiment of the present invention;

FIG. 10 shows an enlarged schematic view at E in FIG. 9;

fig. 11 shows an enlarged schematic view at F in fig. 9.

Wherein the figures include the following reference numerals:

10. a lens barrel; 101. an axial first end; 102. an axial second end; 11. an accommodating chamber; 111. installing a cavity section; 112. a transition cavity section; 100. mounting a torus; 12. a central shaft; 13. bending sections in the radial direction; 20. a lens; 30. a gasket; 40. a shading sheet; 50. and (5) pressing a ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In order to solve the problems that the structure of the micro camera lens module in the prior art is unreasonable and the imaging quality of the micro camera lens module is affected due to poor assembly precision, the utility model provides a lens module and an image capturing device, wherein the image capturing device comprises the lens module described above and below; it should be noted that the image capturing device of the present application includes a mobile phone, a tablet computer, a video camera, a camera, and a watch with a video call function, but is not limited to the above devices, and all the lens modules designed for the electronic devices with the image capturing or photographing functions are within the scope of the present application.

Example one

As shown in fig. 1 to 8, the lens module includes a lens barrel 10 and a lens 20, the lens barrel 10 has an accommodating cavity 11, the accommodating cavity 11 includes a plurality of mounting cavity segments 111 and transition cavity segments 112, two adjacent mounting cavity segments 111 are communicated by one transition cavity segment 112, wherein cross-sectional areas of the plurality of mounting cavity segments 111 sequentially increase along a direction from an axial first end 101 of the lens barrel 10 to an axial second end 102 of the lens barrel 10, and a cavity wall surface of each transition cavity segment 112 includes at least one mounting ring surface 100 inclined to a central axis 12 of the lens barrel 10; at least one lens 20 is mounted on a portion of the plurality of mounting cavity segments 111, and a portion of the outer circumference of at least one lens 20 fits closely to the mounting ring surface 100 to limit the lens 20.

By optimizing the structure of the lens barrel 10 of the lens module, after the lens 20 is installed in the accommodating cavity 11 of the lens barrel 10, the installation ring surface 100 of the transition cavity section 112 of the accommodating cavity 11, which is inclined to the central axis 12 of the lens barrel 10, can be used as a buckling position to perform a limiting installation function on the lens 20, so that the stress distribution among the lenses 20 is effectively improved, the generation of large contact stress due to excessive extrusion among the lenses 20 is avoided, and the deformation of the lenses 20 due to excessive stress is prevented; moreover, the specific structure of lens cone 10 can also the assembly interval between accurate control lens 20 to be favorable to improving the assembly precision of camera lens module, promote the imaging quality of camera lens module, improve the production yield of camera lens module, and then can make the getting for instance performance of getting for instance equipment that is equipped with the camera lens module of this application can promote, improved electronic equipment's product quality, improved the user and experienced good sense to electronic equipment's use.

It should be noted that, in this embodiment, when the lens module is used, the axial first end 101 of the lens barrel 10 is an object side, and the axial second end 102 of the lens barrel 10 is an image side; that is, the inner diameter of the lens barrel 10 gradually increases in the object-to-image direction.

As shown in fig. 4 and 6, one of the at least one mounting torus 100 adjacent to the central axis 12 of the lens barrel 10 forms an inclined mounting angle θ with the central axis 12. The lens barrel 10 with the structure is not only convenient for molding, processing and manufacturing, but also has excellent limiting and mounting effects on the lens 20; in order to improve the accuracy of the contact between the outer peripheral surface of the lens 20 and the mounting ring surface 100 and to ensure the stability of the mounting of the lens 20, as shown in fig. 7 and 8, the included angle between a part of the outer peripheral surface of the lens 20 and the central axis 12 is equal to the inclined mounting included angle θ of the mounting ring surface 100.

Preferably, a portion of the outer peripheral surface of the lens 20 is an annular inclined surface extending continuously around the central axis 12. This is advantageous for equalizing the circumferential stress of the lens 20, thereby improving the stability of the lens 20 mounted in the lens barrel 10.

It should be noted that, in order not to affect the normal optical characteristics of the lens 20, the outer peripheral surface of the lens 20 closely fitted to the mounting ring surface 100 is a non-optical portion of the lens 20.

Preferably, the inclined installation angle θ is 10 ° or more and 25 ° or less.

As shown in fig. 3, a radial extension length L of one of the at least one mounting torus 100 close to the central axis 12 of the lens barrel 10 is greater than or equal to 0.05mm and less than or equal to 0.3 mm. By optimizing the radial extension length L of the mounting ring surface 100, the mounting ring surface 100 can have a sufficient contact area with the lens 20, thereby improving the mounting stability of the lens barrel 10.

Further preferably, the inclined extension length L of the mounting torus 100 is equal to or greater than 0.1mm and equal to or less than 0.2 mm.

Optionally, the transitional cavity section 112 is plural, and each transitional cavity section 112 includes at least two mounting ring surfaces 100, wherein the lens 20 fits snugly with one of the at least two mounting ring surfaces 100 near the central axis 12 of the lens barrel 10. Therefore, the limiting installation stability of the lens barrel 10 to the lens 20 is further improved, the lens 20 is effectively prevented from shaking along the axial direction and the radial direction of the lens barrel 10, and the lens module is ensured to have good structural stability.

As shown in fig. 1, the lens module further includes a gasket 30, the gasket 30 is disposed in the receiving cavity 11, and one gasket 30 is selectively disposed between two adjacent lenses 20. When the layer at the non-optical part of two adjacent lenses 20 is large, the gasket 30 can be used for supporting the lenses 20, and the space between two adjacent lenses 20 can be ensured.

As shown in fig. 1, in order to effectively block stray light, the lens module further includes a light shielding sheet 40, the light shielding sheet 40 is disposed in the accommodating cavity 11, and one light shielding sheet 40 is selectively disposed between two adjacent lenses 20.

Specifically, as shown in the title 1, in the present embodiment, the lens module includes a lens barrel 10 and four lenses 20 disposed in the lens barrel 10, the four lenses 20 include first, second, third and fourth lenses disposed at intervals in a direction from an object side to an image side of the lens barrel 10, wherein the first and second lenses are respectively located in two mounting cavity sections 111 and are in contact with a wall surface of the mounting cavity section 111, the third lens is located in one mounting cavity section 111 and is in close fit with a mounting ring surface 100 of a transition cavity section 112, and the fourth lens is located in one mounting cavity section 111; a light shielding sheet 40 is arranged between the first lens and the second lens, a light shielding sheet 40 is arranged between the third lens and the fourth lens, and a gasket 30 is arranged between the second lens and the third lens. In this embodiment, the inclined installation angle θ is 20 °, and the inclined extension length L is 0.11 mm.

When the third lens is assembled and pressed into the lens barrel 10, the mounting ring surface 100 of the transition cavity segment 112 of the lens barrel 10 contacting the third lens is used as a bearing part to share the extrusion stress generated when the third lens is pressed into the lens barrel 10, and the deformation generated by contact extrusion between the lenses 20 is reduced, so that the distance tolerance between the lenses 20 is greatly reduced, and the imaging quality and the production yield of the lens module are improved.

Example two

As shown in fig. 9 to 11, in the present embodiment, the axial first end 101 of the lens barrel 10 has a radial bending section 13, the radial bending section 13 is used for stopping one lens 20 located at the position of the axial first end 101 of the lens barrel 10, the lens module further includes a pressing ring 50, the pressing ring 50 is disposed at the axial second end 102 of the lens barrel 10, and the pressing ring 50 is used for pressing one lens 20 located at the position of the axial second end 102 of the lens barrel 10. (in the first embodiment, the lens barrel 10 also has the radial bending section 13, and in the first embodiment, the pressing ring 50 is not shown). The cooperation of the radial bending section 13 and the pressing ring 50 is beneficial to improving the limiting stability of the lens barrel 10 to the plurality of lenses 20.

In addition, as shown in fig. 9, in the present embodiment, the lens module includes a lens barrel 10 and five lenses 20 disposed in the lens barrel 10, and the five lenses 20 include first, second, third, fourth and fifth lenses disposed at intervals in a direction from an object side to an image side of the lens barrel 10, wherein the first, third and fifth lenses are respectively located in three mounting cavity segments 111 and are in contact with a cavity wall surface at the mounting cavity segments 111, the second and fourth lenses are respectively located at two mounting cavity segments 111, and the second and fourth lenses are respectively two and closely fitted with the mounting ring surfaces 100 of the two transition cavity segments 112. A light shielding sheet 40 is arranged between the first lens and the second lens, a light shielding sheet 40 is arranged between the third lens and the fourth lens, and a gasket 30 is arranged between the fourth lens and the fifth lens. In this embodiment, the inclined installation angle θ of the transition cavity segment 112 at the second lens is 20 °, and the inclined installation angle θ of the transition cavity segment 112 at the fourth lens is also 20 °; the inclined extension L of the transition cavity segment 112 at the second lens is 0.16mm and the inclined extension L of the transition cavity segment 112 at the fourth lens is 0.1 mm.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (11)

1. A lens module, comprising:

a lens barrel (10), the lens barrel (10) having an accommodating cavity (11), the accommodating cavity (11) comprising a plurality of mounting cavity segments (111) and transition cavity segments (112), two adjacent mounting cavity segments (111) being communicated by one transition cavity segment (112), wherein cross-sectional areas of the plurality of mounting cavity segments (111) sequentially increase in a direction from an axial first end (101) of the lens barrel (10) to an axial second end (102) of the lens barrel (10), a cavity wall surface of each transition cavity segment (112) comprising at least one mounting ring surface (100) inclined to a central axis (12) of the lens barrel (10);

the lens (20) is installed at the position of at least one part of the installation cavity sections (111) in the installation cavity sections (111), and part of the outer peripheral surface of at least one lens (20) is closely matched with the installation ring surface (100) to limit the lens (20).

2. The lens module according to claim 1, wherein one of the at least one mounting ring surface (100) close to the central axis (12) of the lens barrel (10) forms an inclined mounting angle θ with the central axis (12).

3. The lens module as claimed in claim 2, wherein the inclined mounting angle θ is 10 ° or more and 25 ° or less.

4. The lens module according to claim 2, wherein a radial extension L of one of the at least one mounting ring surface (100) close to the central axis (12) of the lens barrel (10) is greater than or equal to 0.05mm and less than or equal to 0.3 mm.

5. The lens module according to claim 1, wherein the mounting annulus (100) has an inclined extension L equal to or greater than 0.1mm and equal to or less than 0.2 mm.

6. The lens module according to claim 1, wherein the transition cavity segment (112) is plural, each transition cavity segment (112) comprising at least two of the mounting annuli (100), wherein the lens (20) fits snugly against one of the mounting annuli (100) that is the central axis (12) of the barrel (10).

7. The lens module as recited in claim 1, characterized in that the outer peripheral surface of the lens (20) that snugly fits the mounting ring surface (100) is a non-optical portion of the lens (20).

8. The lens module according to claim 1, further comprising a gasket (30), wherein the gasket (30) is disposed in the receiving cavity (11), and one gasket (30) is selectively disposed between adjacent two of the lenses (20).

9. The lens module according to claim 1, further comprising a light-shielding sheet (40), wherein the light-shielding sheet (40) is disposed in the accommodating cavity (11), and one light-shielding sheet (40) is selectively disposed between two adjacent lenses (20).

10. The lens module according to claim 1, characterized in that the axial first end (101) of the lens barrel (10) has a radial bend (13), the radial bend (13) is used for stopping one of the lenses (20) at the position of the axial first end (101) of the lens barrel (10), the lens module further comprises a pressing ring (50), the pressing ring (50) is arranged at the axial second end (102) of the lens barrel (10), and the pressing ring (50) is used for pressing one of the lenses (20) at the position of the axial second end (102) of the lens barrel (10).

11. An image capturing apparatus, characterized by comprising the lens module according to any one of claims 1 to 10.

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