WO2022110286A1

WO2022110286A1 - Lens module and camera device

Info

Publication number: WO2022110286A1
Application number: PCT/CN2020/134337
Authority: WO
Inventors: 王海龙
Original assignee: 诚瑞光学(深圳)有限公司
Priority date: 2020-11-26
Filing date: 2020-12-07
Publication date: 2022-06-02
Also published as: CN212276071U

Abstract

A lens module (100) and a camera device comprising same. The lens module (100) comprises a lens barrel (20) and a lens set (10), wherein the lens set (10) is installed in the lens barrel (20). The lens set (10) comprises a first lens (11) closest to an image side. The first lens (11) comprises a step structure (112) formed corresponding to a segmentation position, a middle surface (111), and an outer side surface (113) abutting against the lens barrel (20), wherein the middle surface (111) and the step structure (112) are both located on the image side, and the middle surface (111) is connected to the outer side surface (113) by means of the step structure (112). The segmentation position is an assembly position of two adjacent parts of a mold for forming the first lens (11). The middle surface (111) comprises a light emission surface (1111) for light transmission and imaging, and a bearing surface (1112) perpendicular to the optical axis of the lens module (100), wherein the light emission surface (1111) and the step structure (112) are both connected to the bearing surface (1112). The step structure (112) obliquely extends from the outer end of the bearing surface (1112) to an object side. The lens module (100) facilitates the subsequent assembly process, and the appearance yield of the lens module (100) is effectively improved.

Description

Lens module and camera device

technical field

The present application relates to the technical field of camera lenses, and in particular, to a lens module and a camera device.

Background technique

Optical lens is an indispensable component in machine vision system, which directly affects the quality of imaging and the realization and effect of algorithm.

In the existing lens, the lens module includes a lens barrel and a plurality of lenses with different diameters. The conventional lens mold is not a one-piece structure, but is composed of multiple independent parts, that is, the mold for making the lens is divided. . The split lens mold will lead to the formation of raised split burrs corresponding to the split position of the mold after the lens is formed. When the split burr is located on the bearing surface supported by the suction pen, the split burr will affect the suction of the suction pen on the bearing surface during the assembly process, and the pressing contact between the suction pen and the split burr will cause damage to the lens and reduce the appearance of the lens Yield.

Therefore, it is necessary to provide a new type of lens module to solve the above problems.

technical problem

In the existing lens, the mold for making the lens is split, and the split lens mold will lead to the formation of raised split burrs at the split position of the mold after the lens is formed, which will damage the lens and reduce the appearance yield of the lens.

technical solutions

The purpose of the present application is to provide a lens module and a camera device, which can solve the problem that the splitting burr of the lens closest to the image side affects the assembly.

One of the objectives of the present application is achieved by the following technical solutions: a lens module, including a lens barrel and a lens group, the lens group is installed in the lens barrel; the lens group includes a first lens closest to the image side;

Wherein, the first lens includes a stepped structure formed corresponding to the split position, a middle surface, and an outer surface abutting the lens barrel; the middle surface and the stepped structure are both located on the image side, and the middle surface is connected to the outer surface through the stepped structure; at the splicing position of two adjacent parts of the mold for forming the first lens;

The middle surface includes a light-emitting surface for light-transmitting imaging and a bearing surface perpendicular to the optical axis of the lens module, and both the light-emitting surface and the stepped structure are connected to the bearing surface;

The step structure extends obliquely toward the object side from the outer end of the bearing surface.

In the lens module provided by the embodiment of the present application, the step structure includes:

The first side is parallel to the optical axis of the lens module;

The second surface is connected to the first surface, and the included angle between the second surface and the optical axis is an acute angle or a right angle.

In the lens module provided by the embodiment of the present application, the stepped structure includes a third surface connecting the first surface and the bearing surface, and a fourth surface connecting the second surface and the outer side surface.

In the lens module provided by the embodiment of the present application, the lens group further includes a second lens, a third lens, a fourth lens and a fifth lens that are stacked in sequence from the image side to the object side, wherein the second lens is stacked on the first lens The object side of the lens.

In the lens module provided by the embodiment of the present application, the end of the lens barrel facing the image side is provided with a groove, and the groove, the fourth surface and the outer side surface together form a glue dispensing groove.

In the lens module provided by the embodiment of the present application, the lens group includes a support ring, and two sides of the support ring are respectively abutted with the second lens and the first lens.

In the lens module provided by the embodiment of the present application, the lens barrel includes a first installation groove, a second installation groove, a third installation groove, a fourth installation groove, a fifth installation groove and a sixth installation groove with gradually increasing inner diameters;

The fifth lens is installed in the first installation groove, the fourth lens is installed in the second installation groove, the third lens is installed in the third installation groove, the second lens is installed in the fourth installation groove, and the support ring is installed in the In the fifth installation groove, the first lens is installed in the sixth installation groove.

In the lens module provided by the embodiment of the present application, the lens group includes a first light-shielding sheet, and two sides of the first light-shielding sheet are respectively abutted with the first lens and the support ring;

And/or, the lens group includes a second light-shielding sheet, and two sides of the second light-shielding sheet are respectively abutted with the second lens and the support ring;

And/or, the lens group includes a third shading sheet, and two sides of the third shading sheet are respectively in contact with the third lens and the second lens;

And/or, the lens group includes a fourth shading sheet, and both sides of the fourth shading sheet are respectively abutted with the fourth lens and the third lens;

And/or, the lens group includes a fifth shading sheet, and two sides of the fifth shading sheet are respectively abutted with the fifth lens and the fourth lens.

The second purpose of the present application is to provide a camera device including the above-mentioned lens module.

beneficial effect

Compared with the prior art, the embodiment of the present application forms a step structure on the image side of the first lens at the corresponding split position, so that after the first lens is formed, the raised split burrs will not affect the suction of the first lens by the suction pen The operation is convenient for the subsequent assembly process, and the appearance yield of the lens module is improved.

Description of drawings

1 is a schematic cross-sectional view of a lens module provided by an embodiment of the present application;

Fig. 2 is the enlarged view of A place in Fig. 1;

3 is a schematic cross-sectional view of the first lens in FIG. 1;

FIG. 4 is a schematic cross-sectional view of the lens barrel in FIG. 1 .

The figure shows:

100. Lens module;

10, lens group; 11, first lens; 111, middle surface; 1111, light-emitting surface; 1112, bearing surface; 112, step structure; 1121, first surface; 1122, second surface; 1123, third surface; 1124, the fourth surface; 113, the outer surface; 12, the second lens; 13, the third lens; 14, the fourth lens; 15, the fifth lens; 16, the support ring; 101, the first shading plate; 102, the first Two shades; 103, the third shade; 104, the fourth shade; 105, the fifth shade;

20, lens barrel; 21, first installation groove; 22, second installation groove; 23, third installation groove; 24, fourth installation groove; 25, fifth installation groove; 26, sixth installation groove; 27, concave slot; 271, bottom wall; 272, side wall;

201. Clear hole; 202. Dispensing groove.

Embodiments of the present invention

The present application will be further described below with reference to the accompanying drawings and embodiments.

In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc., or The positional relationship is based on the orientation or positional relationship described in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as a limitation on this application. In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, features delimited with "first", "second" may expressly or implicitly include one or more of said features. In the description of the present application, "plurality" means two or more, unless otherwise expressly and specifically defined.

Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The embodiments described below and features in the embodiments may be combined with each other without conflict.

Referring to FIGS. 1 to 4 , a first aspect of the embodiments of the present application provides a lens module 100 . The lens module 100 includes a lens barrel 20 and a lens group 10 , and the lens group 10 is installed in the lens barrel 20 . The lens group 10 includes the first lens 11 closest to the image side.

The first lens 11 includes a stepped structure 112 formed corresponding to the split position, a middle surface 111 and an outer surface 113 abutting against the lens barrel 20 . Both the intermediate surface 111 and the stepped structure 112 are located on the image side, and the intermediate surface 111 is connected to the outer surface 113 through the stepped structure 112 . The split position is the splicing position of two adjacent parts of the mold for molding the first lens 11 .

The middle surface 111 includes a light-emitting surface 1111 for light-transmitting imaging and a bearing surface 1112 connecting the light-emitting surface 1111 and the stepped structure 112 . Wherein, the bearing surface 1112 is perpendicular to the optical axis OO' of the lens module 100, and is used for abutting with the suction pen during the process of sucking the first lens 11 by the suction pen.

Referring to FIG. 2 , in an optional embodiment, the stepped structure 112 extends obliquely toward the object side from the outer end of the bearing surface 1112 . The stepped structure 112 includes a first surface 1121 parallel to the optical axis of the lens module 100 and a second surface 1122 connected with the first surface 1121 . The included angle between the second surface 1122 and the optical axis is an acute angle or a right angle. In an optional embodiment, the first surface 1121 of the step structure 112 is the position where the split burrs are located.

By adopting the above technical solution, on the image side of the first lens 11, the step structure 112 formed corresponding to the split position extends obliquely from the outer end of the bearing surface 1112 to the object side direction, which makes the step structure 112 even after the first lens 11 is formed. Split burrs are generated on the structure 112 , and the split burrs will not be damaged by contacting the suction pen, and will not affect the suction pen to the bearing surface 1112 , which facilitates assembly and increases the appearance yield of the lens module 100 .

Referring to FIG. 2 , in an optional embodiment, the stepped structure 112 includes a third surface 1123 connecting the first surface 1121 and the bearing surface 1112 and a fourth surface 1124 connecting the second surface 1122 and the outer side surface 113 .

Specifically, the third surface 1123 and the bearing surface 1112 are connected by an arc transition.

Please refer to FIG. 1 and FIG. 2, in an optional embodiment, the end of the lens barrel 20 facing the image side is provided with a groove 27, and the groove 27, the fourth surface 1124 and the outer side 113 are jointly enclosed for accommodating glue The glue dispensing groove 202 is convenient for fixing the first lens 11 and the lens barrel 20 .

Specifically, the bottom wall 271 of the groove 27 abuts against the outer side surface 113 of the first lens 11 . Through the above structure, the contact between the glue and the lens barrel 20 is more sufficient, and the assembly strength of the lens module 100 is enhanced.

Specifically, the side wall 272 of the groove 27 forms a preset angle with the outer side surface 113 of the first lens 11, which facilitates the operation of the dispensing process. It can be understood that the range of the preset included angle is 5° to 25°. Within this included angle range, the glue dispensing groove 202 can not only facilitate the entry of glue, ensure the assembly strength of the lens module 100 but also control the amount of glue. Avoid glue waste.

Referring to FIG. 1 , in an optional embodiment, the lens set 10 further includes a second lens 12 , a third lens 13 , a fourth lens 14 and a fifth lens 15 stacked in sequence from the image side to the object side, wherein the first lens The two lenses 12 are stacked on the object side of the first lens 11 .

1 and 2, in an optional embodiment, the lens set 10 includes a support ring 16, and two sides of the support ring 16 are respectively abutted with the second lens 12 and the first lens 11 to fix the second lens 12.

Referring to FIG. 4 , in an optional embodiment, the lens barrel 20 includes a first installation groove 21 , a second installation groove 22 , a third installation groove 23 , a fourth installation groove 24 , a fifth installation groove 21 and a fifth installation groove with gradually increasing inner diameters. Slot 25 and sixth mounting slot 26.

Specifically, the fifth lens 15 is installed in the first installation groove 21, the fourth lens 14 is installed in the second installation groove 22, the third lens 13 is installed in the third installation groove 23, and the second lens 12 is installed in the fourth installation groove The groove 24 , the support ring 16 is installed in the fifth installation groove 25 , and the first lens 11 is installed in the sixth installation groove 26 .

It can be understood that due to the performance and structural requirements of the lens module 100 , the diameter of the second lens 12 is quite different from the diameter of the first lens 11 , and the inner diameter of the fourth installation groove 24 is different from the inner diameter of the sixth installation groove 26 . larger.

It can be understood that the fifth lens 15 is convex as a whole, the end of the lens barrel 20 facing the object side is further provided with a light-passing hole 201 communicating with the first installation groove 21, and the fifth lens 15 is at least partially penetrated through the light-passing hole 201 . hole 201.

Referring to FIG. 1 , in an optional embodiment, the lens set 10 includes a first shading sheet 101 , and two sides of the first shading sheet 101 are respectively abutted with the first lens 11 and the support ring 16 .

Referring to FIG. 1 , in an optional embodiment, the lens set 10 includes a second shading sheet 102 , and two sides of the second shading sheet 102 are respectively abutted with the second lens 12 and the support ring 16 .

Referring to FIG. 1 , in an optional embodiment, the lens set 10 includes a third shading sheet 103 , and two sides of the third shading sheet 103 are respectively abutted with the third lens 13 and the second lens 12 .

Referring to FIG. 1 , in an optional embodiment, the lens set 10 includes a fourth shading sheet 104 , and both sides of the fourth shading sheet 104 are respectively abutted with the fourth lens 14 and the third lens 13 .

Referring to FIG. 1 , in an optional embodiment, the lens group 10 includes a fifth shading sheet 105 , and two sides of the fifth shading sheet 105 are respectively abutted with the fifth lens 15 and the fourth lens 14 .

It can be understood that the arrangement of the first shading sheet 101, the second shading sheet 102, the third shading sheet 103, the fourth shading sheet 104 and the fifth shading sheet 105 can, on the one hand, block the light entering the lens, and on the other hand, also The squeeze and impact between the lenses, between the lenses and the lens barrel 20, and between the lenses and the support ring 16 can be buffered.

In an optional embodiment, the first shading sheet 101 , the second shading sheet 102 , the third shading sheet 103 , the fourth shading sheet 104 , and the fifth shading sheet 105 are all hollow rings, so as to block the non-optical area of the lens of light.

A second aspect of the embodiments of the present application provides a camera device, and the camera device may be a mobile phone, a digital camera, a tablet computer, or the like. Specifically, the camera device includes the lens module 100 as described above.

In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection connected, or integrally connected. It can be a mechanical connection or an electrical connection. It can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication between two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

In this application, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may include the first and second features in direct contact, or may include the first and second features Not directly but through additional features between them. Also, the first feature being "above", "over" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is "below", "below" and "below" the second feature includes the first feature is directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.

The above disclosure provides many different implementations or examples for implementing different structures of the present application. To simplify the disclosure of the present application, the components and arrangements of specific examples are described above. Of course, they are only examples and are not intended to limit the application. Furthermore, this application may repeat reference numerals and/or reference letters in different instances for the purpose of simplicity and clarity, and does not in itself indicate a relationship between the various embodiments and/or arrangements discussed. In addition, this application provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

In the description of this specification, reference to the terms "one embodiment," "some embodiments," "exemplary embodiment," "example," "specific example," or "some examples", etc., is meant to incorporate the embodiments A particular feature, structure, material, or characteristic described or exemplified is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present application have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, The scope of the application is defined by the claims and their equivalents.

Claims

A lens module, comprising a lens barrel and a lens group, wherein the lens group is installed in the lens barrel, wherein the lens group includes a first lens closest to the image side;

Wherein, the first lens includes a stepped structure formed corresponding to the split position, a middle surface, and an outer side surface abutting the lens barrel; the middle surface and the stepped structure are both located on the image side, and the middle surface passes through the the step structure is connected with the outer side surface; the dividing position is the splicing position of two adjacent parts of the mold for forming the first lens;

The middle surface includes a light-emitting surface for light-transmitting imaging and a bearing surface perpendicular to the optical axis of the lens module, and both the light-emitting surface and the stepped structure are connected to the bearing surface;

The step structure extends obliquely toward the object side from the outer end of the bearing surface.
The lens module according to claim 1, wherein the stepped structure comprises:

The first surface is parallel to the optical axis of the lens module;

The second surface is connected to the first surface, and the included angle between the second surface and the optical axis is an acute angle or a right angle.
The lens module according to claim 2, wherein the stepped structure comprises a third surface connecting the first surface and the bearing surface, and a third surface connecting the second surface and the outer surface All sides.
The lens module according to claim 1, wherein the lens group further comprises a second lens, a third lens, a fourth lens and a fifth lens that are stacked in sequence from the image side to the object side, wherein the first lens Two lenses are stacked on the object side of the first lens.
The lens module according to claim 3, wherein the end of the lens barrel facing the image side is provided with a groove, and the groove, the outer side surface and the fourth surface together form a glue dispensing groove .
The lens module according to claim 4, wherein the lens group comprises a support ring, and two sides of the support ring are respectively abutted with the second lens and the first lens.
The lens module according to claim 6, wherein the lens barrel comprises a first installation groove, a second installation groove, a third installation groove, a fourth installation groove, a fifth installation groove and The sixth installation slot;

The fifth lens is installed in the first installation groove, the fourth lens is installed in the second installation groove, the third lens is installed in the third installation groove, and the fourth lens is installed in the third installation groove. Two lenses are installed in the fourth installation groove, the support ring is installed in the fifth installation groove, and the first lens is installed in the sixth installation groove.
The lens module according to claim 7, wherein the lens group comprises a first shading sheet, and two sides of the first shading sheet are respectively abutted with the first lens and the support ring;

And/or, the lens set includes a second light-shielding sheet, and two sides of the second light-shielding sheet are respectively abutted with the second lens and the support ring;

And/or, the lens group includes a third shading sheet, and two sides of the third shading sheet are respectively in contact with the third lens and the second lens;

And/or, the lens set includes a fourth shading sheet, and both sides of the fourth shading sheet are respectively in contact with the fourth lens and the third lens;

And/or, the lens group includes a fifth shading sheet, and two sides of the fifth shading sheet are respectively abutted with the fifth lens and the fourth lens.
A camera device, characterized by comprising the lens module according to any one of claims 1-8.