CN209387970U - A lens and a lens module containing the lens - Google Patents

Abstract

The utility model is applicable to the technical field of optical imaging, and provides a lens and a lens module including the lens. Wherein, the area near the edge of the top surface of the lens has a ring-shaped concave structure, the inner side of the concave structure has a ring-shaped convex structure, and the outer side of the concave structure has a ring-shaped supporting plane. The top surface of the lens of the utility model has a concave structure, which reduces the area of the lens supporting plane, is beneficial to reducing the reflection of stray light, and improves the imaging quality of the lens module. At the same time, the lens has a convex structure and a supporting plane, both of which can support the lens above it, and the convex structure can be fitted with the lens above, ensuring the stability of the assembled upper and lower lenses. In addition, there is no need to design a large contact plane for the upper and lower lenses, which is conducive to reducing the size of the lens and the lens module, so that the lens module can be applied to electronic products requiring small lenses or electronic products with limited installation space.

Description

A lens and a lens module containing the lens

technical field

The utility model belongs to the technical field of optical imaging, in particular to a lens and a lens module containing the lens.

Background technique

With the development of electronic technology, there are more and more electronic products with imaging functions. Optical lens modules are widely used in various products and are constantly improved and optimized.

The lens module includes a lens barrel and a number of lenses accommodated in the lens barrel. The lenses are stacked up and down. In order to maintain the stability of the structure, among the two stacked lenses, the bottom of the upper lens has a flat surface, and the top of the lower lens has a flat surface. There are support planes so that the plane at the bottom of the upper lens can rest on the support plane at the top of the lower lens. In order to ensure the stability of the structure, the two lenses stacked up and down need to ensure a certain area. Therefore, the planes of the top and bottom of the lens are set relatively large at present, and stray light is easy to directly hit the plane of the lens to reflect and affect the imaging. produce adverse effects.

In addition, since the lens surface needs to be sufficiently flat, it is difficult to make the overall size of the lens smaller. However, for some electronic products, it is hoped that the exposed lens can be made smaller, which is beneficial to the appearance of the electronic product. In addition, for some electronic products with limited installation space, the size of the lens is also required to be made smaller.

In order to meet the above requirements, it is necessary to further improve the existing lens structure.

Utility model content

The technical problem to be solved by the utility model is to provide a lens and a lens module including the lens, aiming at solving the problem that the lens structure in the prior art is difficult to make smaller.

The utility model is achieved in this way, a lens, the top surface of the lens near the edge has a ring-shaped concave structure, the inner side of the concave structure has a ring-shaped convex structure, the concave structure There is an annular bearing plane in the outer direction.

Further, the surface of the recessed structure is matted or covered with a matting layer.

Further, the bottom surface of the lens near the edge also has a concave structure, and the concave structure on the bottom surface is aligned with the concave structure on the top surface.

Further, the lens is made of plastic material through injection molding process.

This embodiment also provides a lens module, including a lens barrel and a plurality of lenses accommodated in the lens barrel; the plurality of lenses include a first lens and a second lens, and the first lens is stacked on the second lens. Above the two lenses, the bottom of the first lens has a first annular step and a second annular step, wherein the first annular step on the outside is higher than the second annular step on the inside; the second lens For any lens mentioned above, the convex structure on the top surface of the second lens is embedded in the second annular step of the first lens; the bearing plane of the second lens supports the first lens The first annular step of a lens.

Further, both the first annular step and the second annular step are planes.

Further, the lens barrel includes a large end and a small end, the bottom of the small end is connected to the top of the large end, and the internal spaces of the two communicate with each other; and the diameter of the internal space of the large end is larger than the diameter of the large end. The diameter of the internal space of the small end, the first lens and the second lens are both accommodated in the internal space of the small end.

Compared with the prior art, the utility model has the beneficial effects that:

The top surface of the lens of the utility model has a concave structure, which reduces the area of the lens supporting plane, is beneficial to reducing the reflection of stray light, and improves the imaging quality of the lens module. At the same time, the lens has a convex structure and a supporting plane, both of which can support the lens above it, and the convex structure can be fitted with the lens above, ensuring the stability of the assembled upper and lower lenses. In addition, there is no need to design a large contact plane for the upper and lower lenses, which is conducive to reducing the size of the lens and the lens module, so that the lens module can be applied to electronic products requiring small lenses or electronic products with limited installation space.

Description of drawings

Fig. 1 is a schematic structural diagram of a lens module provided by an embodiment of the present invention;

Figure 2 is an enlarged view of area A in Figure 1;

Fig. 3 is an enlarged view of area B in Fig. 1 .

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, use a specific Therefore, it cannot be construed as a limitation on the present invention; the terms "first", "second" and "third" are only used for descriptive purposes, and cannot be interpreted as indicating or implying relative importance; in addition, Unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be interpreted in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, It can also be an electrical connection; it can be a direct connection, or an indirect connection through an intermediary, or an internal communication between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

Please refer to Fig. 1 and Fig. 2, which is a preferred embodiment of the present utility model, which provides a lens module, including a lens barrel 1, a number of lenses 2 accommodated in the lens barrel 1, a gasket 3 and a number of shading sheets 4 .

In the following this embodiment takes a 4P lens module as an example to describe this embodiment in detail.

The lens module of this embodiment has four lenses 2, including a first lens 2a and a second lens 2b, and the first lens 2a is stacked above the second lens 2b.

The bottom of the first lens 2a has a first annular step 21a and a second annular step 22a, wherein the outer first annular step 21a is higher than the inner second annular step 22a. Optionally, both the first annular step 21a and the second annular step 22a in this embodiment are planes.

The area near the edge of the top surface of the second lens 2b has a ring-shaped concave structure 21b, the inner direction of the concave structure 21b has a ring-shaped convex structure 22b, and the outer direction of the concave structure 21b has a ring-shaped bearing plane 23b.

The convex structure 22b on the top surface of the second lens 2b is embedded in the second annular step 22a of the first lens 2a, and the supporting plane 23b of the second lens 2b supports the first annular step 21a of the first lens 2a.

By setting the concave structure 21b on the top surface of the second lens 2b, the area of the top of the second lens 2b against the plane 23b can be reduced, which is beneficial to reduce the reflection of stray light and improve the imaging quality of the lens module. At the same time, the second lens 2b has a raised structure 22b and a supporting plane 23b, both of which can support the first lens 2a above it, and the raised structure 22b of the second lens 2b can cooperate with the second surface of the first lens 2a. The fit of the ring-shaped step 22a ensures the stability of the assembly of the first lens 2a and the second lens 2b. In order to block stray light, a shading sheet 4 is interposed between the raised structure 22b and the second ring-shaped step 22a. In addition, the first lens 2a and the second lens 2b that fit together do not need to design a large-area contact plane, which is conducive to reducing the size of the lens 2 and the lens module, so that the lens module can be applied to electronic products that require small lenses or In electronic products with limited installation space.

Furthermore, the surface of the concave structure 21b of the second lens 2b is matted or covered with a matting layer 24b; thus, the stray light irradiated on the surface of the concave structure 21b can be eliminated or weakened, and the imaging quality can be improved.

Referring to FIG. 3 , the bottom surface of the second lens 2b near the edge also has a concave structure 25b, and the concave structure 21b on the bottom surface is aligned with the concave structure 25b on the top surface. It is easy to understand that the concave structure 25b on the bottom surface of the second lens 2b can also reduce its contact area with the third lens 2c below, and, through the support of the light-shielding sheet 4, it can ensure the contact between the second lens 2b and the third lens 2c. Stability after assembly.

In order to cooperate with the small size design of the lens 2 at the top of the lens barrel 1, the lens barrel 1 of this embodiment includes a large end 11 and a small end 12, the bottom of the small end 11 is connected to the top of the large end 12, and the inside of the two The spaces communicate with each other; and, the diameter of the inner space of the big head end 11 is greater than the diameter of the inner space of the small head end 12, and the first lens 2a, the second lens 2b and the third lens 2c are all accommodated in the inner space of the small head end 12, thereby The top of the lens module can be designed to be smaller,

In order to facilitate molding, the lenses 2 of this embodiment are all made of plastic materials through injection molding process.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (7)

1. A kind of eyeglass, it is characterized in that, the area near the edge of the top surface of the lens has an annular concave structure, the inside direction of the concave structure has an annular convex structure, the outer direction of the concave structure It has an annular supporting plane. 2. The lens according to claim 1, characterized in that, the surface of the concave structure is treated with matting or covered with a matting layer. 3 . The lens according to claim 1 , wherein a region near the edge of the bottom surface of the lens also has a concave structure, and the concave structure on the bottom surface is aligned with the concave structure on the top surface. 4 . 4. The lens according to claim 1, wherein the lens is made of plastic material through injection molding process. 5. A lens module, comprising a lens barrel and a plurality of lenses accommodated in the lens barrel; it is characterized in that the plurality of lenses include a first lens and a second lens, and the first lens is stacked on the second lens. Above the two lenses, the bottom of the first lens has a first annular step and a second annular step, wherein the first annular step on the outside is higher than the second annular step on the inside; the second lens The lens according to any one of claims 1 to 4, wherein the convex structure on the top surface of the second lens is embedded in the second annular step of the first lens; the supporting plane of the second lens The first annular step supporting the first lens. 6 . The lens module according to claim 5 , wherein both the first annular step and the second annular step are planes. 7. The lens module according to claim 5 or 6, wherein the lens barrel includes a large end and a small end, the bottom of the small end is connected to the top of the large end, and the inside of the two The spaces communicate with each other; and, the diameter of the inner space of the big end is larger than the diameter of the inner space of the small end, and the first lens and the second lens are both accommodated in the inner space of the small end.