WO2020258323A1

WO2020258323A1 - Optical lens and lens module

Info

Publication number: WO2020258323A1
Application number: PCT/CN2019/093904
Authority: WO
Inventors: 王海龙
Original assignee: 瑞声光学解决方案私人有限公司
Priority date: 2019-06-28
Filing date: 2019-06-28
Publication date: 2020-12-30
Also published as: CN210090712U

Abstract

Disclosed are an optical lens and a lens module. The optical lens comprises a first surface and a second surface arranged opposite to each other. In a region including the first surface and a first reference surface, the volume of a portion protruding relative to the first reference surface is a first protrusion volume, and the volume of a portion recessed relative to the first reference surface is a first recess volume. In a region including the second surface and a second reference surface, the volume of a portion protruding relative to the second reference surface is a second protrusion volume, and the volume of a portion recessed relative to the second reference surface is a second recess volume. A first volume is obtained by subtracting the first recess volume from the first protrusion volume. A second volume is obtained by subtracting the second protrusion volume from the second recess volume. The absolute difference between the first volume and the second volume is less than or equal to 0.15 mm ³. The above arrangement can enhance the flowability of a material in a process of manufacturing an optical lens, such that the forming process is smooth, and the formed optical lens will be stable and have a more attractive appearance.

Description

Optical lens and lens module

Technical field

This application relates to the technical field of optical imaging, and specifically refers to an optical lens and a lens module.

Background technique

With the continuous development of technology, electronic devices continue to develop towards intelligence. In addition to digital cameras, portable electronic devices such as tablets and mobile phones are also equipped with lens modules with camera functions to meet the needs of users to take photos at any time. .

technical problem

The traditional lens module mainly includes a lens barrel and a lens group arranged in the lens barrel. The lens group usually includes multiple lenses arranged in sequence from the object side to the image side. Among these multiple lenses, some of the lenses are thicker, and when forming thicker lenses, the material fluidity is often poor, which leads to The lens is difficult to form.

Therefore, it is necessary to provide an optical lens and a lens module to solve the above technical problems.

Technical solutions

The purpose of this application is to provide an optical lens and a lens module, which aims to solve the problem of the difficulty in forming traditional thicker lenses.

The technical solution of this application is as follows:

An optical lens comprising a first surface and a second surface arranged oppositely in the extending direction of the optical axis, and a circumferential surface connecting the first surface and the second surface, the first surface including a first horizontal plane , The second surface includes a second horizontal plane parallel to the first horizontal plane, and both the first horizontal plane and the second horizontal plane are directly connected to the circumferential surface;

Taking the first reference surface that coincides with the first horizontal plane as a reference, in the area enclosed by the first surface and the first reference surface, the volume of the area protruding from the first reference surface is the first A convex volume, and the volume of the area recessed in the first reference surface is the first recessed volume;

Taking a second reference surface coincident with the second horizontal plane as a reference, in the area enclosed by the second surface and the second reference surface, the volume of the area protruding from the second reference surface is the first Two convex volumes, the volume of the area recessed in the second reference surface is the second recessed volume;

The value of the first convex volume minus the first concave volume is the first volume, the second concave volume minus the second convex volume is the second volume, and the first volume is The absolute value of the difference of the second volume is less than or equal to 0.15 mm ³ .

In one of the embodiments, the first volume is equal to the second volume.

In one of the embodiments, the second protrusion volume is zero.

In one of the embodiments, the first surface is the object side of the optical lens, and the second surface is the image side of the optical lens.

In one of the embodiments, the absolute value of the difference between the first volume and the second volume is less than or equal to 0.10 mm ³ .

In one of the embodiments, the optical lens is a glass lens.

In one of the embodiments, the optical lens includes an optical portion and an edge portion disposed around the optical portion, the optical portion includes a first curved surface for imaging, and the edge portion includes the first horizontal plane and The first horizontal plane faces the second surface and is bent and extended in a direction close to the optical axis, and an extended surface extending from the kick surface in the direction close to the optical axis, the first curved surface, The extension surface, the buckling surface and the first horizontal surface are connected in sequence to form the first surface.

In one of the embodiments, the optical lens includes an optical portion and an edge portion disposed around the optical portion, the optical portion includes a second curved surface for imaging, and the edge portion includes the second horizontal plane and a self The second horizontal surface is a transition surface that is bent and extended in the direction of the optical axis, and the second curved surface, the transition surface, and the second horizontal surface are sequentially connected to form the second surface.

A lens module includes a lens barrel and a lens group fixed on the lens barrel. The lens group includes any of the above-mentioned optical lenses.

In one of the embodiments, in the lens group, the optical lens is arranged closest to the object side.

Beneficial effect

The beneficial effects of this application are:

In the above-mentioned optical lens, the difference between the first volume and the second volume is controlled within 0.15mm ^{3. In} this way, in the process of manufacturing the optical lens, the fluidity of the material can be improved, thereby making the molding process smoother. The molded optical lens will also be more stable and have a better appearance.

Description of the drawings

FIG. 1 is a schematic structural diagram of an optical lens according to an embodiment of the present application;

Figure 2 is a partial enlarged view of the optical lens A shown in Figure 1;

3 is a schematic diagram of the structure of the optical lens shown in FIG. 1;

4 is a schematic structural diagram of a lens module according to an embodiment of the application.

Embodiments of the invention

The application will be further described below in conjunction with the drawings and implementations.

As shown in FIGS. 1 and 2, the optical lens 100 of one embodiment includes a first surface 110 and a second surface 120 that are arranged opposite to each other in the extending direction of the optical axis 102, and a connection connecting the first surface 110 and the second surface 120 Circumferential surface 130, the first surface 110 includes a first horizontal plane 111, and the second surface 120 includes a second horizontal plane 121 parallel to the first horizontal plane 111. Both the first horizontal plane 111 and the second horizontal plane 121 are directly connected to the circumferential surface 130, In addition, the first horizontal plane 111 and the second horizontal plane 121 are both perpendicular to the optical axis 102.

For the convenience of description, in this embodiment, the surface that coincides with the first horizontal plane 111 is defined as the first reference surface 104, and the surface that coincides with the second horizontal plane 121 is defined as the second reference surface 106.

Taking the first reference surface 104 as a reference, in the area enclosed by the first surface 110 and the first reference surface 104, the area protruding from the first reference surface 104 is the first convex area 101, and the first convex area The volume of 101 is the first protruding volume V1. The area recessed in the first reference surface 104 is the first recessed area 103, and the volume of the first recessed area 103 is the first recessed volume W1.

Taking the second reference surface 106 as a reference, in the area enclosed by the second surface 120 and the second reference surface 106, the area protruding from the second reference surface 106 is the second convex area 105, and the second convex area The volume of 105 is the second protruding volume V2. The area recessed in the second reference surface 106 is the second recessed area 107, and the volume of the second recessed area 107 is the second recessed volume W2.

Taking the viewing angle shown in FIG. 1 as the viewing angle, the first protruding area 101 mentioned here refers to the area formed by the first surface 110 located above the first reference surface 104 and the first reference surface 104, the first recess The area 103 refers to the area formed by the part of the first surface 110 located below the first reference surface 104 and the first reference surface 104. At the same time with reference to FIG. 2, the second convex area 105 refers to the area formed by the part of the second surface 120 located below the second reference surface 106 and the second reference surface 106, and the second recessed area 107 refers to the second surface 120 is an area formed by a portion above the second reference plane 106 and the second reference plane 106.

It is not difficult to understand that both the first convex area 101 and the second convex area 105 are subordinate to the physical structure of the optical lens 100, and the first concave area 103 and the second concave area 107 are formed after the optical lens 100 is molded. Cavity.

In this embodiment, the value of the first convex volume V1 minus the first concave volume W1 is the first volume, and the second concave volume W2 minus the second convex volume V2 is the second volume because the first convex The volume V1 is greater than the first recessed volume W1, and the second recessed volume W2 is greater than the second protruding volume V2. Therefore, both the first volume and the second volume are greater than zero. Further, the absolute value of the difference between the first volume and the second volume is less than or equal to 0.15 mm ³ , and the first volume can be greater than or equal to the second volume, or less than or equal to the second volume.

In summary, the first convex volume V1, the second convex volume V2, the first concave volume W1, and the second concave volume W2 satisfy the following relationship: ∣(V1- W1)-(W2- V2)∣≤0.15 mm ³ .

The optical lens 100 of this embodiment is a glass lens, and the difference between the first volume and the second volume is controlled within 0.15 mm ^{3. In} this way, the optical lens 100 can be manufactured by a hot pressing process to improve the material The fluidity will make the molding process smoother, and the molded optical lens 100 will be more stable and have a better appearance. When the optical lens 100 is a plastic lens, this design can also make the surface of the molded optical lens 100 more uniform.

More preferably, the absolute value of the difference between the first volume and the second volume is less than or equal to 0.10 mm ^3. It is understandable that for the optical lens 100 of this embodiment, the closer the first volume and the second volume are , The better the molding effect of the optical lens 100 is. When the first volume is equal to the second volume, the molding effect of the optical lens 100 is optimal.

In addition, in this embodiment, the second protrusion volume V2 may be 0. In other words, there is no part of the second surface 120 that protrudes from the second reference surface 106, that is, the second protrusion area 105 It may not exist.

1 to 3, the optical lens 100 includes an optical portion 140 and an edge portion 150 disposed around the optical portion 140. The optical portion 140 includes a first curved surface 142 for imaging, and the edge portion 150 includes a first horizontal plane 111, The buckling surface 152 bent and extending from the first horizontal plane 111 to the second surface 120 and close to the optical axis 102, and the extended surface 154 extending from the buckling surface 152 to the direction close to the optical axis 102, the extended surface 154 being parallel to the first The horizontal surface 111, the first curved surface 142, the extended surface 154, the bump surface 152 and the first horizontal surface 111 are connected in sequence to form the first surface 110.

Specifically, in this embodiment, the first curved surface 142 intersects the first reference surface 104, a part of the first curved surface 142 and the first reference surface 104 enclose the first convex area 101, the bumping surface 152, the extended surface 154, The other part of the first curved surface 142 and the first reference surface 104 enclose the first recessed area 103.

The optical portion 140 further includes a second curved surface 144 for imaging. The edge portion 150 also includes a second horizontal surface 121 and a transition surface 156 bent and extended from the second horizontal surface 121 toward the optical axis 102. The second curved surface 144 and the transition surface 156 and the second horizontal surface 121 are sequentially connected to form a second surface 120.

Specifically, in this embodiment, there are two circular intersections between the transition surface 156 and the second reference surface 106, a part of the transition surface 156 and the second reference surface 106 encloses to form a second convex area 105, and the transition surface 156 The other part of, the second curved surface 144 and the second reference surface 106 enclose a second recessed area 107.

It can be understood that when the second convex volume V2 is 0, there is only a circular intersection line between the transition surface 156 and the second reference surface 106, and the transition surface 156, the second curved surface 144 and the second reference surface 106 surround Together, a second recessed area 107 is formed.

When the optical lens 100 of this embodiment is applied to a lens module, the first surface 110 can be used as the object side surface and the second surface 120 can be used as the image side surface, or the first surface 110 can be used as the image side surface and the second surface 120 can be used as the image side surface.物面。 The object side.

As shown in FIG. 4, this embodiment also provides a lens module that can be used in electronic products such as mobile phones and tablets. The lens module includes a lens barrel 10, a lens group 20, and a pressure ring 30. The lens barrel 10 It includes a side wall 12 and a top wall 14. The top wall 14 is bent and extended from an end of the side wall 12 close to the object side to a direction close to the optical axis, and is enclosed with the side wall 12 to form a containing cavity. The top wall 14 is also provided with A light hole communicating with the accommodating cavity. The lens group 10 includes a plurality of lenses sequentially arranged from the object side to the image side and gradually increasing in outer diameter, including the optical lens 100 closest to the object side, and the optical lens 100 abuts the top wall 14. The pressing ring 30 is connected to the side wall 12 and abuts against the image side surface of the lens closest to the image side to fix the lens group 20 on the lens barrel 10.

More specifically, referring to FIGS. 1 to 4, the first surface 110 is the object side of the optical lens 100, and the second surface 120 is the image side of the optical lens 100. The edge portion 150 is located in the accommodating cavity, the optical portion 140 extends from the accommodating cavity into the light-passing hole, and the first horizontal plane 111 and the buckling surface 152 abut the top wall 14 to realize the optical lens 100 and the top wall 14 The Kanhe.

It can be seen from FIG. 4 that the lens module of this embodiment includes a total of 7 lenses. It is understandable that the number of lenses can be adjusted according to actual conditions, which is not uniquely limited here.

The above are only the implementation manners of this application. It should be pointed out here that for those of ordinary skill in the art, improvements can be made without departing from the creative concept of this application, but these all belong to this application. The scope of protection.

Claims

An optical lens, which is characterized in that it comprises a first surface and a second surface arranged opposite to each other in the extending direction of the optical axis, and a circumferential surface connecting the first surface and the second surface, the first surface Includes a first horizontal plane, the second surface includes a second horizontal plane parallel to the first horizontal plane, and both the first horizontal plane and the second horizontal plane are directly connected to the circumferential surface;

Taking the first reference surface that coincides with the first horizontal plane as a reference, in the area enclosed by the first surface and the first reference surface, the volume of the area protruding from the first reference surface is the first A convex volume, and the volume of the area recessed in the first reference surface is the first recessed volume;

Taking a second reference surface coincident with the second horizontal plane as a reference, in the area enclosed by the second surface and the second reference surface, the volume of the area protruding from the second reference surface is the first Two convex volumes, the volume of the area recessed in the second reference surface is the second recessed volume;

The value of the first convex volume minus the first concave volume is the first volume, the second concave volume minus the second convex volume is the second volume, and the first volume is The absolute value of the difference of the second volume is less than or equal to 0.15 mm 3 .
4. The optical lens of claim 1, wherein the first volume is equal to the second volume.
The optical lens of claim 1, wherein the second protrusion volume is zero.
The optical lens according to claim 1, wherein the first surface is the object side of the optical lens, and the second surface is the image side of the optical lens.
The optical lens of claim 1, wherein the absolute value of the difference between the first volume and the second volume is less than or equal to 0.10 mm 3 .
The optical lens of claim 1, wherein the optical lens is a glass lens.
The optical lens according to claim 1, wherein the optical lens comprises an optical part and an edge part arranged around the optical part, the optical part comprises a first curved surface for imaging, and the edge part comprises The first horizontal plane, a bump surface bent and extended from the first horizontal surface to the second surface and a direction close to the optical axis, and an extension extending from the bump surface in a direction close to the optical axis The first surface, the first curved surface, the extended surface, the buckling surface, and the first horizontal surface are sequentially connected to form the first surface.
The optical lens according to claim 1, wherein the optical lens comprises an optical part and an edge part arranged around the optical part, the optical part comprises a second curved surface for imaging, and the edge part comprises The second horizontal plane and the transition surface bent and extended from the second horizontal plane in the direction of the optical axis, the second curved surface, the transition surface, and the second horizontal plane are connected in sequence to form the second surface .
A lens module, characterized by comprising a lens barrel and a lens group fixed on the lens barrel, the lens group comprising the optical lens according to any one of claims 1-8.
The lens module according to claim 9, wherein in the lens group, the optical lens is disposed closest to the object side.