WO2021000206A1 - Lens, lens module and electronic device - Google Patents

Abstract

A lens, a lens module and an electronic device. The lens comprises an optical portion located at the central position and used for imaging, and a supporting portion surrounding the optical portion and used for abutting against an optical assembly. The supporting portion comprises a first extension part and a second extension part, an end of the first extension part away from the optical axis is a first outer end, an end of the second extension part away from the optical axis is a second outer end, the second extension part is formed by projecting the first outer end of the first extension part in a direction perpendicular to the optical axis of the optical portion, and the thickness of the second outer end is greater than the thickness of the first outer end in the direction of the optical axis. Therefore, by extending the supporting portion and enlarging the contact area of the supporting portion, the mounting stability of the lens on the inner side wall of the lens barrel of the lens module is improved.

Description

Lenses, lens modules and electronic equipment Technical field

This application relates to the technical field of lenses, in particular to a lens, a lens module and an electronic device.

Background technique

The lens is the outermost lens of the lens. The thicker the overall structure, the more stable the molded lens surface. Please refer to FIG. 1, which is a schematic diagram of the structure of a traditional lens 100'. It can be seen that the edge thickness of the traditional lens is thinner than the middle thickness, which leads to the problem of poor surface stability of the molded lens.

Therefore, it is necessary to provide a lens.

technical problem

The purpose of this application is to provide a lens, which aims to solve the technical problem of poor surface stability of the existing lens.

Technical solutions

The technical solution of the present application is as follows: a lens comprising an optical part located at a central position and used for imaging, and a supporting part surrounding the optical part and used to abut against the optical component, the supporting part comprising a first An extension portion, one end of the first extension portion far from the optical axis is a first outer end, and the supporting portion further includes a second extension portion that is separated from the first extension portion of the first extension portion. The end is formed to protrude in a direction perpendicular to the optical axis of the optical part; the end of the second extension part away from the optical axis is a second outer end, and in the optical axis direction, the second outer end The thickness is greater than the thickness of the first outer end.

Preferably, the first reference plane is defined as a plane extending from one side of the second outer end and perpendicular to the optical axis, and the second reference plane is defined as a plane extending from the other side of the second outer end and perpendicular to the optical axis The volume of the lens beyond the first reference plane from the first reference plane along the optical axis away from the lens is the first forward volume, and the first reference plane and the lens The volume of the interspace is the first negative volume, the volume of the gap between the second reference plane and the lens is the second negative volume, and the lens is away from the second reference plane along the optical axis The volume whose direction of the lens exceeds the second reference plane is a second positive volume, the difference between the first positive volume and the first negative volume is a first difference, and the second negative The difference between the forward volume and the second forward volume is a second difference, and the absolute value of the difference between the first difference and the second difference is less than 0.01 cubic millimeter.

Preferably, the first difference is equal to the second difference.

Preferably, there is a gap having a first negative volume between the first reference plane and the supporting portion of the lens, and there is a gap having a first negative volume between the second reference plane and the optical portion of the lens. The second negative volume of the void.

Preferably, the second extension portion further includes an outer wall surface connecting the first reference plane and the second reference plane, and the outer wall surface is parallel to the optical axis and is a plane.

The object of the present application is also to provide a lens module, the lens module includes a lens barrel, the lens barrel includes a barrel wall enclosing a receiving cavity, the lens module further includes the above-mentioned lens, so The lens is accommodated in the side of the accommodating cavity close to the object side.

The purpose of the present application is to also provide an electronic device including the above-mentioned lens module.

Beneficial effect

The beneficial effect of the present application is that the lens of the present application protrudes from the first outer end of the first extension of the original lens to the second extension in the direction perpendicular to the optical axis, wherein, in the direction of the optical axis, The thickness of the second outer end of the second extension portion is greater than the thickness of the first outer end of the first extension portion. In this way, by extending the bearing portion and enlarging the thickness of the bearing portion, the lifted lens is in the lens barrel of the lens module The installation stability of the lens is helpful to improve the molding stability of the lens. On the basis of the above-mentioned lenses, the overall molding stability of the lens module is better. On the basis of the above-mentioned lens assembly, the electronic device has better stability in camera and photography, and has a longer service life.

Description of the drawings

Figure 1 is a sectional view of a prior art lens;

Figure 2 is a cross-sectional view of the lens of the application, where the figure is mainly used to reflect the volume relationship between various parts;

Figure 3 is an enlarged view of A in Figure 2;

Figure 4 is a cross-sectional view of the lens of the application, where the figure is mainly used to reflect the structural relationship of the supporting portion of the glass lens;

Fig. 5 is an enlarged view of B in Fig. 4.

Among them, the labels of the drawings are as follows:

100/100’, lens; OO’, optical axis;

1. Optical department;

2. Supporting part; 21', first extension; 211', first outer end; 212', second side surface; 2121', first surface; 2122', second surface; 2123', arc surface ; 213', the side of the second image;

22. The second extension part; 221, the first reference plane; 222, the second reference plane; 223, the second outer end; 224, the first object side; 225, the first image side; 226, the outer wall surface;

1a, the first positive volume; 2a, the first negative volume; 2b, the second positive volume; 1b, the second negative volume; 2a1, the first annular groove; 2a2, the second annular groove; 2b1, the first Annular protrusion; 2b2, the second annular protrusion.

Embodiments of the invention

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

The present application provides a lens module. The lens module usually includes a lens barrel and the following lens 100, wherein the lens barrel includes a tube wall surrounding a receiving cavity. Specifically, the following lens 100 is usually near the lens mold The object side of the group (not shown) is housed in the containing cavity. The lens 100 used in this application will be described in detail below.

As shown in FIGS. 2 and 3 and compared with FIG. 1, the lens 100 of the present application includes an optical part 1 and a supporting part 2, wherein the optical part 1 is located in the central position and is used for imaging, and the supporting part 2 surrounds the optical part 1. And used to abut against other optical components. In this embodiment, the supporting portion 2 includes a first extending portion 21' and a second extending portion 22. For the convenience of description, the end of the first extension 21' away from the optical axis OO' is referred to as the first outer end 211', and the end of the second extension 22 away from the optical axis OO' is referred to as the second outer end 223. The second extension portion 22 is formed by the first outer end 211' of the first extension portion 21' protruding in a direction perpendicular to the optical axis OO' of the optical portion 1.

In this embodiment, in order to improve the mounting stability of the lens 100 and the lens barrel, the end of the second extension 22 away from the optical axis OO' is the second outer end 223. In the direction of the optical axis OO', the second The thickness of the outer end 223 is greater than the thickness of the first outer end 211'. It is understandable that the provision of the second extension portion 22 can extend the overall installation length of the supporting portion 2. At the same time, the overall thickness of the supporting portion 2 can be adjusted by the second extension portion 22, thereby making the lens of the present application easier to process Prepared with better molding stability.

Specifically, in this embodiment, the thickness of the second extension portion 22 can also be modified according to actual conditions to further improve the molding stability of the lens of the present application. As shown in FIGS. 2 and 3, the first reference plane 221 is defined as a plane extending from one side of the second outer end 223 and perpendicular to the optical axis OO', and the second reference plane 222 is defined as a plane from the second outer end The other side of the end 223 extends and is perpendicular to the plane of the optical axis OO';

As shown in FIG. 2 again, the volume of the lens 100 that exceeds the first reference plane 221 from the first reference plane 221 in the direction away from the lens 100 along the optical axis OO' is the first positive volume 1a. The volume of the gap between the first reference plane 221 and the lens 100 is the first negative volume 2a. The first positive volume 1a can be understood as the convex part of the optical part 1 above the first reference plane 221, and the first negative volume 2a is the supporting part under the first reference plane 221 and surrounding the optical part. 1 Ring groove around.

In this embodiment, it is defined that the convex side of the lens on the optical section 1 is the object side, and the other side is the image side.

Correspondingly, the volume of the optical axis OO' of the gap between the second reference plane 222 and the lens 100 is the second negative volume 1b, and the lens 100 moves away from the lens 100 along the optical axis OO' from the second reference plane 222 The volume beyond the second reference plane 222 is the second positive volume 2b. Understandably, the second positive volume 2b is an annular protrusion of the supporting portion 2 higher than the second reference plane 222, and the second negative volume 1b is a groove of the optical portion 1 lower than the second reference plane 222. The annular protrusion surrounds the groove.

For the convenience of description, the difference between the first positive volume 1a and the first negative volume 2a is called the first difference, and correspondingly, the difference between the second negative volume 1b and the second positive volume 2b is called The second difference. Wherein, in this embodiment, the absolute value of the difference between the first difference and the second difference is less than 0.01 cubic millimeter. In this way, the thickness configuration of the lens 100 of the present application is more reasonable, and the lens 100 can be molded by compression. In the process, it has better fluidity, and the molded lens has a better surface shape, which means that the lens has better molding stability.

Specifically, the absolute value of the difference between the first positive volume 1a and the first negative volume 2a and the difference between the second negative volume 1b and the second positive volume 2b may be in the range of 0.010mm3, 0.008mm3 , 0.006mm3, 0.004mm3 and 0.002mm3, and approach zero infinitely. Preferably, in this embodiment, the first difference and the second difference are equal, that is, the difference between the two differences is 0. In this way, the lens 100 of the present application has the thickest overall thickness and the best molding stability.

As shown in FIGS. 2 and 3, specifically, the volume of the first extension 21' is lower than the first reference plane 221 along the optical axis OO' direction, and the volume of the second extension 22 is lower than the first reference plane 221 along the optical axis OO' direction. The sum of the volumes of the plane 221 is equal to the first negative volume 2a. It can be seen from the figure that under the first reference plane 221, the first extension portion 21' has a first annular groove 2a1 surrounding the optical portion 1. Similarly, the second extension portion 22 also has a surrounding optical portion 1. The space enclosed by the second annular groove 2a2, the first annular groove 2a1, the second annular groove 2a2 and the first reference plane 221 is the first negative volume 2a. In addition, the overall thickness of the lens structure 100 of the present application can be adjusted by adjusting the volume of the second annular groove 2a2 to fine-tune its molding stability.

As shown in FIGS. 2 and 3, specifically, the volume of the first extension 21' is higher than the second reference plane 222 along the optical axis OO' direction, and the volume of the second extension 22 is higher than the second reference plane 222 along the optical axis OO' direction. The sum of the volumes of the plane 222 is equal to the second positive volume 2b. It can also be seen from the figure that on the second reference plane 222, the first extension portion 21' has a first annular protrusion 2b1 surrounding the optical portion 1. In the same way, the second extension portion 22 also has a second annular protrusion 2b2 surrounding the optical portion 1, and the space enclosed by the first annular protrusion 2b1, the second annular protrusion 2b2 and the second reference plane 222 is the first Two forward volume 2b. Similarly, by adjusting the volume of the second annular protrusion 2b2, the overall thickness of the lens structure 100 of the present application can also be adjusted to fine-tune its molding stability.

As shown in FIGS. 3 and 4, in one embodiment, the second extension portion 22 includes a first object side surface 224 and a first image side surface 225, wherein the first object side surface 224 is flush with the first reference plane 221, The first image side surface 225 is opposite to the first object side surface 224 in the direction of the optical axis OO′, and the first image side surface 225 is flush with the second reference plane 222.

Correspondingly, the first extension 21' includes a second object side surface 212' and a second image side surface 213' disposed opposite to the second object side surface 212' in the direction of the optical axis OO'; in the direction from the image side to the object side , The second object side surface 212 ′ is lower than the first object side surface 224. A portion of the second image side surface 213' close to the second extension portion 22 protrudes from the first image side surface 225 toward the image side, and a portion close to the optical portion 1 is recessed toward the object side.

As shown in FIGS. 3 to 5, in one embodiment, the second object side surface 212' includes a first surface 2121' close to the object side and a second surface 2122' connected to the first surface 2121'. Specifically, the second surface 2122' and the first object side surface 224 smoothly transition through the arc surface 2123'. In the direction from the image side to the object side, the second surface 2122' is lower than the first surface 2121'. In the direction of the optical axis OO', the distance between the second surface 2122' and the second reference plane 222 is smaller than the distance between the first object side surface 224 and the first image side surface 225, that is, the second outer surface of the second extension 22 The thickness of the end 223 is greater than the thickness of the first outer end 211' of the first extension 21'.

As shown in FIGS. 3 to 5, in one embodiment, the second extension portion 22 further includes an outer wall surface 226 connecting the first object side surface 224 and the first image side surface 225, and the outer wall surface 226 is parallel to the optical axis OO', And it is flat.

An embodiment of the present application also provides an electronic device including the above-mentioned lens module. It should be noted that the electronic device can usually be a mobile phone, a video camera, a camera, etc.

On the basis of the above-mentioned lens module, the electronic equipment has better stability in camera and photography, and has a longer service life.

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 are all protected by this application. range.

Claims (7)

A lens includes an optical part located at a central position and used for imaging, and a supporting part surrounding the optical part and used to abut against the optical component, the supporting part comprising a first extension part, the first The end of the extension part away from the optical axis is the first outer end, which is characterized by: The supporting portion further includes a second extension portion formed by a first outer end of the first extension portion protruding in a direction perpendicular to the optical axis of the optical portion; the second extension portion The end of the portion away from the optical axis is a second outer end, and in the direction of the optical axis, the thickness of the second outer end is greater than the thickness of the first outer end. The lens of claim 1, wherein the first reference plane is defined as a plane extending from one side of the second outer end and perpendicular to the optical axis, and the second reference plane is another plane from the second outer end. A plane extending on one side and perpendicular to the optical axis. The volume of the lens that exceeds the first reference plane from the first reference plane in the direction away from the lens along the optical axis is the first positive volume, and the volume is between the first reference plane and the lens The volume of the gap is the first negative volume, the volume of the gap between the second reference plane and the lens is the second negative volume, and the lens is far away from the second reference plane along the optical axis. The volume whose direction of the lens exceeds the second reference plane is a second positive volume, the difference between the first positive volume and the first negative volume is a first difference, and the second negative volume The difference between the volume and the second forward volume is a second difference, and the absolute value of the difference between the first difference and the second difference is less than 0.01 cubic millimeter. 4. The lens of claim 2, wherein the first difference is equal to the second difference. The lens according to claim 2 or 3, wherein there is a gap having the first negative volume between the first reference plane and the supporting portion of the lens, and the second reference There is a gap having the second negative volume between the plane and the optical portion of the lens. The lens according to claim 4, wherein the second extension part further comprises an outer wall surface connecting the first reference plane and the second reference plane, the outer wall surface being parallel to the optical axis, And it is flat. A lens module, the lens module includes a lens barrel, the lens barrel includes a barrel wall enclosing an accommodating cavity, characterized in that: the lens module further comprises any one of claims 1 to 5 The lens is accommodated in the side of the containing cavity close to the object side. An electronic device, characterized in that: the electronic device comprises the lens module according to claim 6. To