WO2021184297A1

WO2021184297A1 - Camera lens and imaging apparatus comprising same, and electronic device

Info

Publication number: WO2021184297A1
Application number: PCT/CN2020/080209
Authority: WO
Inventors: 王丽青; 邹海荣; 吴俊甫
Original assignee: 南昌欧菲精密光学制品有限公司
Priority date: 2020-03-19
Filing date: 2020-03-19
Publication date: 2021-09-23

Abstract

Disclosed are a camera lens (100) and an imaging apparatus comprising same, and an electronic device. The camera lens (100) comprises: a lens barrel (1), the lens barrel (1) having an accommodation cavity; a lens group (2), the lens group (2) being accommodated in the accommodation cavity, and the lens group (2) comprising a first lens (21), the first lens (21) comprising an optically effective area and a bearing area surrounding the optically effective area; an adhesive material (3), the adhesive material (3) being provided in the bearing area and abutting with the lens barrel (1) for bonding and fixing of the lens barrel (1) and the first lens (21); and an extinction member (4), the extinction member (4) being arranged on the surface of the adhesive material (3) exposed out of the accommodation cavity.

Description

Lens, imaging device and electronic equipment with the same

Technical field

The present disclosure relates to the field of optical technology, and in particular to a lens, an imaging device and electronic equipment having the same.

Background technique

In recent years, users' requirements for lenses, especially reliability and stray light, have become more and more stringent. In the related art, when the existing glue is cured and meets the requirements for the thrust of the lens, when the special light hits the glue surface on the lens, it will be reflected and form a stray light spot on the imaging surface. This will affect the image quality and seriously affect the quality of the lens. For lenses with low reflectivity on the glue surface after curing, the thrust is difficult to meet customer requirements, which will affect reliability.

Summary of the invention

The present disclosure aims to solve at least one of the technical problems existing in the prior art. For this reason, one objective of the present disclosure is to provide a lens that can effectively ensure that the thrust of the lens reaches the standard and has good imaging quality.

Another object of the present disclosure is to provide an imaging device having the above-mentioned lens.

Another object of the present disclosure is to provide an electronic device having the above-mentioned imaging device.

A lens according to an embodiment of the first aspect of the present disclosure includes: a lens barrel having a receiving cavity; a lens group, the lens group being received in the receiving cavity, the lens group including a first lens, the The first lens includes an optically effective area and a supporting area surrounding the optically effective area; a glue material, the glue material is arranged in the supporting area and abuts the lens barrel, so that the lens barrel and the The first lens is glued and fixed; a matting part, the matting part is arranged on the surface of the glue material exposed to the receiving cavity.

According to the lens of the embodiment of the present disclosure, the matting member is provided on the surface of the plastic material exposed to the receiving cavity, which can effectively ensure that the thrust of the lens meets the standard, and can effectively eliminate the stray light of the plastic material and ensure the imaging quality.

According to some examples of the present disclosure, a plurality of microgrooves are formed on the surface of the matting member away from the glue material. With this arrangement, the surface of the matting element is uneven, which can cause undesigned light to be scattered after it hits the matting element, thereby reducing undesigned light hitting the imaging surface, and at the same time, scattering can prevent light spots from being generated, thereby further ensuring imaging quality.

According to some examples of the present disclosure, the microgrooves are evenly distributed on the surface of the matting member. Such a setting can effectively ensure that special light, such as undesigned light, can be scattered when it hits any position of the matting member, thereby further ensuring the imaging quality.

According to some examples of the present disclosure, the total opening area of all the microgrooves accounts for 30%-60% of the surface of the matting member. Therefore, by setting the total opening area of all microgrooves to occupy 30%-60% of the surface of the matting member, while ensuring the imaging quality, the processing difficulty of the matting member can be effectively reduced and the cost can be reduced.

According to some examples of the present disclosure, the maximum width of each of the microgrooves is w, where the w satisfies: 0.005mm≤w≤0.1mm. With this arrangement, the size of the microgrooves is small, which can well reduce the reflectivity when the non-designed light hits the matting part, and ensure the imaging quality.

According to some examples of the present disclosure, the matting member is formed by coating the glue with a plurality of bubbles inside and curing it. As a result, due to the existence of air bubbles, the uneven surface of the matting member can be effectively ensured, so that stray light can be effectively eliminated.

According to some examples of the present disclosure, the thickness of the matting member in the optical axis direction is smaller than the thickness of the glue material in the optical axis direction. As a result, while ensuring the image quality, the material for the matting part can be effectively saved and the cost can be saved.

According to some examples of the present disclosure, the matting member is an annular member surrounding the bearing area. This setting can further reduce the undesigned light hitting the imaging surface.

According to some examples of the present disclosure, the surface of the matting member facing away from the glue material is a concave arc surface. As a result, the purpose of optimizing and improving the stray light of the rubber material can be better achieved, so that the image quality can be effectively guaranteed.

According to some examples of the present disclosure, the lens closest to the image side in the lens group is the first lens. This setting can better eliminate the stray light of the plastic material.

The imaging device according to the embodiment of the second aspect of the present disclosure includes the lens according to the embodiment of the first aspect of the present disclosure.

According to the imaging device of the embodiment of the present disclosure, by adopting the above-mentioned lens, the objective of optimizing and improving the stray light of the rubber material can be achieved, so that the imaging quality can be effectively ensured.

The electronic device according to the embodiment of the third aspect of the present disclosure includes the imaging device according to the embodiment of the second aspect of the present disclosure.

According to an electronic device such as a mobile phone according to an embodiment of the present disclosure, by adopting the above-mentioned imaging device, the user's sense of use can be effectively improved.

The additional aspects and advantages of the present disclosure will be partially given in the following description, and some will become obvious from the following description, or be understood through the practice of the present disclosure.

Description of the drawings

The above and/or additional aspects and advantages of the present disclosure will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, in which:

Fig. 1 is a perspective view of a lens according to an embodiment of the present disclosure;

FIG. 2 is a front view of the lens shown in FIG. 1;

FIG. 3 is a rear view of the lens shown in FIG. 1;

Figure 4 is a cross-sectional view taken along the line A-A in Figure 3;

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

Reference signs:

Lens 100;

Lens barrel 1; Lens group 2; First lens 21;

Adhesive material 3; matting piece 4; microgrooves 41; imaging surface 5.

Detailed ways

The embodiments of the present disclosure are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary, and the embodiments of the present disclosure are described in detail below.

The lens 100 according to an embodiment of the present disclosure will be described below with reference to FIGS. 1 to 5. The lens 100 can be applied to electronic devices such as mobile phones (not shown in the figure) and the like. In the following description of this application, the lens 100 is applied to a mobile phone as an example for description. Of course, those skilled in the art can understand that the lens 100 can also be applied to other types of electronic devices, not limited to mobile phones.

As shown in FIG. 1 and FIG. 4, the lens 100 according to the embodiment of the first aspect of the present disclosure includes a lens barrel 1, a lens group 2, a glue material 3 and a matting member 4.

Specifically, the lens barrel 1 has an accommodating cavity, and the lens group 2 is accommodated in the accommodating cavity. The lens group 2 includes a first lens 21. The first lens 21 includes an optically effective area and a bearing area surrounding the optically effective area. The glue 3 is arranged in the bearing area of the first lens 21 and abuts against the lens barrel 1 so that the lens barrel 1 and the first lens 21 are bonded and fixed. The matting member 4 is arranged on the surface of the plastic material 3 exposed to the receiving cavity. For example, in the example of FIGS. 1 to 5, the lens barrel 1 is a cylindrical structure, and the lens barrel 1 defines a receiving cavity for accommodating the lens group 2, and the lens group 2 is installed in the receiving cavity of the lens barrel 1. The lens group 2 includes a first lens 21. The first lens 21 includes an optical effective area in the center and a bearing area surrounding the outer periphery of the optical effective area. The inner wall is connected so that the lens barrel 1 and the first lens 21 are bonded and fixed by the glue 3, and the matting member 4 is provided on the surface of the glue 3 away from the first lens 21. The extinction element 4 can be seen on the side where a lens 21 is located. Therefore, by arranging the matting member 4 on the surface of the plastic material 3 exposed to the accommodating cavity, when special light such as undesigned light hits the matting member 4, it can be scattered or absorbed by the matting member 4, thereby reducing exposure to the imaging surface. The non-designed light on 5 guarantees the imaging quality, which in turn guarantees the quality of the lens 100. Moreover, by providing the rubber material 3, the thrust of the lens 100 can be effectively guaranteed to meet the standard.

According to the lens 100 of the embodiment of the present disclosure, the matting member 4 is provided on the surface of the plastic material 3 exposed to the receiving cavity, which can effectively ensure that the thrust of the lens 100 meets the standard, and can effectively eliminate the stray light of the plastic material 3 and ensure the imaging quality.

According to some examples of the present disclosure, referring to FIGS. 1 to 2 in combination with FIGS. 3 to 5, a plurality of microgrooves 41 are formed on the surface of the matting member 4 away from the glue 3. In the description of the present disclosure, "plurality" means two or more. For example, in the examples shown in FIGS. 1 to 5, a plurality of microgrooves 41 may be formed on the side surface of the matting member 4 that is away from the glue 3 and spaced apart from each other. With this arrangement, the surface of the matting member 4 is uneven, which can cause undesigned light to be scattered after it hits the matting member 4, thereby reducing undesigned light hitting the imaging surface 5. At the same time, the scattering can prevent the generation of light spots, thereby further ensuring Image quality.

Optionally, the microgrooves 41 are evenly distributed on the surface of the matting member 4. At this time, the microgrooves 41 are distributed on the entire surface of the matting member 4. Such a setting can effectively ensure that special light, such as undesigned light, can be scattered when it hits any position of the matting member 4, so that the imaging quality can be further ensured.

Optionally, the total opening area of all microgrooves 41 accounts for 30%-60% of the surface of the matting member 4 (including the endpoint value). When the total opening area of all microgrooves 41 accounts for less than 30% of the surface area of the matting member 4, the total opening area of all microgrooves 41 is relatively small, so that undesigned light may not be scattered when it hits the matting member 4, thereby making Undesigned light hits the imaging surface 5, reducing the imaging quality. When the total opening area of all the microgrooves 41 accounts for more than 60% of the surface area of the matting member 4, it may increase the processing difficulty and increase the cost. Therefore, by setting the total opening area of all the microgrooves 41 to account for 30%-60% of the surface of the matting member 4, while ensuring the imaging quality, the processing difficulty of the matting member 4 can be effectively reduced and the cost can be reduced.

Optionally, the maximum width of each microgroove 41 is w, where w satisfies: 0.005mm≤w≤0.1mm. With this arrangement, the size of the microgrooves 41 is small, which can well reduce the reflectivity when the non-designed light hits the matting member 4 and ensure the imaging quality.

Further, as shown in FIGS. 1 to 2 and 4 to 5, the matting member 4 is formed by coating glue with a plurality of bubbles on the glue 3 and then curing it. As a result, due to the existence of air bubbles, the unevenness of the surface of the matting member 4 can be effectively ensured, so that stray light can be effectively eliminated.

According to some optional embodiments of the present disclosure, the reflectivity of the matting member 4 is α, where α satisfies: α≦0.6%. Therefore, by using the matting member 4 (such as glue, etc.) with a low surface reflectance, stray light can also be eliminated well and the imaging quality can be ensured.

Optionally, the thickness of the matting member 4 in the direction of the optical axis is smaller than the thickness of the adhesive material 3 in the direction of the optical axis, as shown in FIGS. 4 to 5. As a result, while ensuring the imaging quality, the material used for the matting member 4 can be effectively saved, and the cost can be saved. It can be understood that the amount of glue of the glue material 3 can be specifically adjusted according to the actual situation to better meet the actual application.

Optionally, referring to FIGS. 1 to 2, the matting member 4 is an annular member surrounding the bearing area of the first lens 21. Such a setting can further reduce the undesigned light rays hitting the imaging surface 5.

Optionally, the surface of the matting member 4 facing away from the adhesive material 3 is a concave arc surface, as shown in FIGS. 4 and 5. Therefore, the purpose of optimizing and improving the stray light of the adhesive material 3 can be better achieved, so that the image quality can be effectively guaranteed.

Among them, referring to FIG. 4, the matting member 4 is provided on the image side of the glue 3. Such a setting can better eliminate the stray light of the adhesive material 3.

An imaging device (not shown in the figure) according to an embodiment of the second aspect of the present disclosure includes the lens 100 according to the above-mentioned embodiment of the first aspect of the present disclosure.

According to the imaging device of the embodiment of the present disclosure, by adopting the above-mentioned lens 100, the objective of optimizing and improving the stray light of the rubber material 3 can be achieved, so that the imaging quality can be effectively ensured.

It can be understood that the electronic devices of the embodiments of the present disclosure include, but are not limited to, smart phones, tablet computers, notebook computers, digital still cameras, e-book readers, portable multimedia players (PMP), mobile medical devices, smart wearable devices, or Other electronic devices with camera functions. Wherein, the lens 100 can be arranged on the back of the electronic device, or can be arranged on the front of the electronic device.

Other configurations and operations of electronic devices such as mobile phones according to the embodiments of the present disclosure are known to those of ordinary skill in the art, and will not be described in detail here.

In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Axial", "Radial", "Circumferential" The orientation or positional relationship of other indications is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or a specific orientation. The azimuth structure and operation, therefore, cannot be understood as a limitation of the present disclosure.

In the description of the present disclosure, “first feature” and “second feature” may include one or more of these features.

In the description of the present disclosure, the "above" or "below" of the first feature of the second feature may include the first and second features in direct contact, or may include the first and second features not in direct contact but through them Another feature contact between.

In the description of the present disclosure, “above”, “above” and “above” the second feature of the first feature includes the first feature directly above and diagonally above the second feature, or only means that the first feature is higher than The second feature.

In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "exemplary embodiments", "examples", "specific examples", or "some examples" etc. means to incorporate the implementation The specific features, structures, materials or characteristics described by the examples or examples are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above-mentioned terms do not necessarily refer to the same embodiment or example.

Although the embodiments of the present disclosure have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and modifications can be made to these embodiments without departing from the principle and purpose of the present disclosure. The scope of the present disclosure is defined by the claims and their equivalents.

Claims

A lens, characterized in that it includes:

A lens barrel, the lens barrel has a receiving cavity;

A lens group, the lens group is accommodated in the containing cavity, the lens group includes a first lens, and the first lens includes an optically effective area and a bearing area surrounding the optically effective area;

A glue material, the glue material is arranged in the bearing area and abuts against the lens barrel, so that the lens barrel and the first lens are bonded and fixed;

A matting member, the matting member is arranged on the surface of the glue material exposed to the receiving cavity.
The lens of claim 1, wherein a plurality of microgrooves are formed on a surface of the matting member away from the glue material.
3. The lens of claim 2, wherein the microgrooves are uniformly distributed on the surface of the matting member.
The lens of claim 3, wherein the total opening area of all the microgrooves accounts for 30%-60% of the surface of the matting member.
The lens of claim 2, wherein the maximum width of each of the microgrooves is w, wherein the w satisfies: 0.005mm≤w≤0.1mm.
4. The lens of claim 1, wherein the matting member is formed by coating the glue with a plurality of bubbles inside and curing the glue.
The lens according to any one of claims 1 to 6, wherein the thickness of the matting member in the direction of the optical axis is smaller than the thickness of the adhesive material in the direction of the optical axis.
The lens according to any one of claims 1 to 6, wherein the matting member is a ring-shaped member surrounding the bearing area.
The lens according to any one of claims 1 to 6, wherein the surface of the matting member facing away from the rubber material is a concave arc surface.
The lens according to any one of claims 1 to 6, wherein the lens closest to the image side in the lens group is the first lens.
An imaging device, characterized by comprising the lens according to any one of claims 1-10.
An electronic device, characterized by comprising the imaging device according to claim 11.