CN114125201A

CN114125201A - Optical lens, preparation method thereof, camera module and electronic equipment

Info

Publication number: CN114125201A
Application number: CN202011473185.XA
Authority: CN
Inventors: 傅强; 王恩亮; 蒋恒; 赵波杰; 黄乾友
Original assignee: Ningbo Sunny Opotech Co Ltd
Current assignee: Ningbo Sunny Opotech Co Ltd
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2022-03-01
Also published as: CN114125191B; CN114125204A; CN114125203A; CN114125200B; CN114125203B; CN114125204B; CN114125202A; CN114125191A; CN114125200A; CN114125202B

Abstract

Disclosed are an optical lens, a manufacturing method thereof, a camera module and an electronic device. The optical lens includes: a barrel structure including a barrel body having a top surface; and at least one optical lens installed in the lens barrel body, wherein the lens barrel structure further comprises at least one protection layer formed on the top surface of the lens barrel body, the first hardness of the upper surface of the at least one protection layer is greater than the second hardness of the top surface of the lens barrel body, at least one part of the upper surface of the at least one protection layer provides at least one anchor surface for being attached in an assembling process, and the at least one anchor surface is perpendicular to an optical axis set by the optical lens. In this way, the strength of the end face of the optical lens is enhanced through the protective layer, the lens end face of the optical lens is prevented from being scratched and/or dirtied, and the protective layer can reflect at least part of the wavelength light in the visible light so as to enhance the aesthetic property of the optical lens.

Description

Optical lens, preparation method thereof, camera module and electronic equipment

The application is a divisional application of Chinese patent application with the application number of 202010888813.4 and the title of 'optical lens and preparation method thereof, camera module and electronic equipment'.

Technical Field

The application relates to the field of camera modules, in particular to an optical lens, a preparation method thereof, a camera module and electronic equipment, wherein the optical lens comprises a protective layer for enhancing the strength of the end face of a lens barrel, the lens end face of the optical lens is prevented from being scratched through the protective layer, and the protective layer can reflect light with at least partial wavelength in visible light to enhance the attractiveness of the optical lens.

Background

With the popularization of mobile electronic devices (especially smart phones), the related technology of camera modules applied to mobile electronic devices for helping users to acquire images has been rapidly developed and advanced.

The camera module generally includes an optical lens, a lens carrier and a photosensitive assembly, and the core components of the photosensitive assembly include a circuit board, a photosensitive chip, a color filter and the like. At the in-process of the module equipment of making a video recording, because dirty defective products can appear often in various factors, promptly, have dirty module of making a video recording, wherein, some dirty available sanitizer wash, but some are dirty because wearing and tearing lead to, can't clean back reuse, can only scrap usually.

For a rear camera module (i.e., a camera module installed on the back of an electronic device), only the lens end surface of the rear camera module is displayed on the back of the electronic device, and the rest of the rear camera module is covered by a cover plate or other structures of the electronic device.

Therefore, it is an important industrial problem for module manufacturers to ensure that the lens end face of the camera module has relatively good integrity and cleanliness.

Disclosure of Invention

An advantage of the present application is to provide an optical lens, a method for manufacturing the optical lens, a camera module and an electronic device, wherein the optical lens includes a protection layer formed on a lens end surface of the optical lens, an upper surface of the protection layer has a high hardness, so that the lens end surface of the optical lens is prevented from being scratched and/or contaminated by the protection layer, and the protection layer can reflect at least part of wavelengths of visible light to enhance the aesthetic property of the optical lens.

An advantage of the present application is to provide an optical lens, a method of manufacturing the optical lens, a camera module, and an electronic apparatus, wherein at least a portion of an upper surface of the protective layer provides an anchor surface for being a stress surface during an assembly process of the optical lens, and the anchor surface has a relatively high hardness, so that a lens end surface of the optical lens is prevented from being scratched during the assembly process by the anchor surface.

Another advantage of the present application is to provide an optical lens, a method for manufacturing the same, a camera module and an electronic device, wherein the anchor surface has a relatively high hardness, so as to reduce contamination of the optical lens caused by contact and friction of the anchor surface during an assembling process. That is, by providing the protective layer, the optical lens can effectively ensure the cleanliness of the end face thereof.

Another advantage of the present application is to provide an optical lens, a method for manufacturing the optical lens, a camera module and an electronic device, in which the protective layer can reflect light with at least part of wavelengths in visible light, so that the aesthetic effects of the optical lens and the camera module can be enhanced and diversified. That is, the protective layer provides new design elements for the appearance design of the electronic device, and the space of the appearance design of the electronic device is expanded.

Another advantage of the present application is to provide an optical lens, a method for manufacturing the optical lens, a camera module and an electronic device, in which the protective layer can be used as a positioning identifier corresponding to the camera module, so as to help a consumer position and identify the camera module through the protective layer.

Another advantage of the present application is to provide an optical lens, a method for manufacturing the same, a camera module and an electronic device, wherein, during an assembling process of the optical lens, the anchor surface serves as a stress surface during the assembling process without disposing the stress surface at other positions of the optical lens, such as a side portion of the optical lens, in order to ensure that a lens end surface is not scratched, and therefore, a shoulder size of the optical lens according to the present application is reduced, so that the optical lens is more compact in overall size.

Another advantage of the present application is to provide an optical lens, a method for manufacturing the optical lens, a camera module and an electronic device, wherein when the camera module is configured as a rear camera module of the electronic device, the camera module can enrich a color enrichment degree of a back surface of the electronic device to enhance an aesthetic effect of the electronic device.

Other advantages and features of the present application will become apparent from the following description and may be realized by means of the instrumentalities and combinations particularly pointed out in the appended claims.

To achieve at least one of the above objects or advantages, the present application provides an optical lens including:

a barrel structure including a barrel body having a top surface; and

at least one optical lens mounted in the lens barrel body;

the lens barrel structure further comprises at least one protection layer formed on the top surface of the lens barrel main body, and the first hardness of the upper surface of the at least one protection layer is greater than the second hardness of the top surface of the lens barrel main body.

In an optical lens according to the present application, at least a portion of an upper surface of the at least one protective layer provides at least one anchor surface for attachment during assembly.

In an optical lens according to the present application, the first hardness of the upper surface ranges from 4H to 5H, and the second hardness of the top surface of the lens barrel body ranges from B to 2H.

In an optical lens according to the present application, the barrel body further has an inclined surface extending obliquely and inwardly from the top surface to the optical lens located at the topmost side, and the barrel structure further includes a matte layer provided on the inclined surface.

In an optical lens according to the present application, the thickness of the matte layer is less than or equal to 1um, and the reflectance of the matte layer is less than 0.8%.

In an optical lens according to the present application, the anchor surface is a flat surface.

In an optical lens according to the present application, the roughness Ra of the anchor surface is equal to or less than 0.56 um.

In an optical lens according to the present application, the anchor surface is perpendicular to an optical axis set by the optical lens.

In an optical lens according to the present application, the lens barrel body includes a groove concavely formed on a top surface thereof, and the protective layer is cured by an adhesive applied in the groove.

In an optical lens according to the present application, a depth range of the groove is 20um to 400um, and a width range of the groove is 150um to 700 um.

In an optical lens according to the present application, the depth of the groove is 50um ± 10um, and the width of the groove is 400um ± 50 um.

In the optical lens according to the present application, the adhesive has a viscosity of 2000cps to 8000 cps.

In an optical lens according to the present application, the adhesive has a viscosity of 4000 cps.

In the optical lens according to the present application, the protective layer formed of the adhesive is capable of reflecting at least part of wavelengths in visible light.

In an optical lens according to the present application, the protective layer has a reflectance of more than 2.5%.

In an optical lens according to the present application, the protective layer has a reflectance ranging from 1.1% to 1.2%.

In the optical lens according to the present application, the protective layer formed of the adhesive is capable of reflecting at least two different wavelengths of light in visible light.

In an optical lens according to the present application, the adhesive includes an adhesive body and a pigment mixed in the adhesive body to enable the protective layer to reflect at least part of wavelengths in visible light by the pigment.

In the optical lens according to the present application, the pigment is selected from any one of or a combination of several of phthalocyanine red, carbon black powder, titanium dioxide, phthalocyanine blue, diaryl ether and phthalocyanine green.

In the optical lens according to the application, the pigment is composed of phthalocyanine red and titanium dioxide in a mass part ratio of 4: 1.

In the optical lens according to the application, the pigment is composed of phthalocyanine blue and titanium dioxide in a mass part ratio of 1: 1.

In an optical lens according to the present application, the pigment is uniformly mixed with the adhesive body.

In an optical lens according to the present application, the lens barrel body includes a groove concavely formed in a top surface thereof, and the protective layer is fitted in the groove after the preform molding.

In the optical lens according to the present application, the protective layer is preformed by curing and molding the adhesive.

In the optical lens according to the present application, the protective layer is preformed by means of curing molding of a mixed material of a molding material and a pigment.

In an optical lens according to the present application, the protective layer is attached to the top surface of the lens barrel body after being preformed.

In an optical lens according to the present application, the protective layer is integrally formed on the top surface of the lens barrel body by a molding process.

In an optical lens barrel according to the present application, the barrel body includes a first barrel unit and a second barrel unit, wherein a middle optical lens of the at least one optical lens is mounted to the first barrel unit to form the first lens unit, and other optical lenses of the at least one optical lens are mounted to the second barrel unit to form the second lens unit, and the first lens unit is assembled to the second lens unit.

In an optical lens according to the present application, the protective layer has an annular structure.

In the optical lens according to the present application, a portion of the optical lens located at the topmost side, which is exposed to the barrel body, is entirely and circumferentially wrapped in the protective layer.

In an optical lens according to the present application, each of the protective layers includes a plurality of sector units connected edge to edge with each other.

In an optical lens according to the present application, each of the sector units is capable of reflecting at least part of wavelengths of light in visible light.

In an optical lens according to the present application, wavelengths of light that can be reflected by at least two of the plurality of sector units are different.

In an optical lens according to the present application, each of the protective layers includes a plurality of ring-shaped units nested inside and outside.

In an optical lens according to the present application, each of the ring-shaped units is capable of reflecting at least part of wavelengths of light in visible light.

In an optical lens according to the present application, wavelengths of light that can be reflected by at least two of the plurality of ring-shaped units are different.

In an optical lens according to the present application, the at least one protective layer includes a first protective layer and a second protective layer, the second protective layer being located outside the first protective layer.

In an optical lens according to the present application, a height of the second protective layer is higher than a height of the first protective layer.

In an optical lens according to the present application, the first protective layer and the second protective layer are capable of reflecting light of different wavelengths in visible light, respectively.

In an optical lens according to the present application, a maximum outer diameter of a shoulder dimension of the barrel body is 7.5mm or less.

In an optical lens according to the present application, the protective layer is provided with arc-shaped over-angles at both sides of an upper surface thereof.

According to another aspect of the present application, there is also provided a camera module, including:

the optical lens as described above; and

a photosensitive assembly, wherein the optical lens is held on a photosensitive path of the photosensitive assembly.

According to still another aspect of the present application, there is also provided an electronic device, including:

an electronic device main body; and

be assembled in the module of making a video recording of electronic equipment main part, wherein, the module of making a video recording includes: the optical lens as described above; and a photosensitive assembly, wherein the optical lens is held on a photosensitive path of the photosensitive assembly.

According to another aspect of the present application, there is also provided a method of manufacturing an optical lens, including:

providing a lens barrel body, wherein the lens barrel body is provided with a top surface and a groove formed on the top surface;

installing at least one optical lens in the lens barrel body;

applying an adhesive in the groove, the adhesive consisting of an adhesive body and a pigment mixed in the adhesive body; and

curing the adhesive to form a protective layer, wherein a first hardness of an upper surface of the protective layer is greater than a second hardness of a top surface of the lens barrel body.

In the manufacturing method according to the present application, at least a portion of the upper surface of the at least one protective layer provides at least one anchor surface for being attached during assembly.

In a method of manufacturing according to the present application, applying an adhesive within the groove includes: and applying the adhesive in the groove in a glue spraying mode.

In a method of manufacturing according to the present application, applying an adhesive within the groove includes: and forming the adhesive in the groove by a screen printing mode.

In the manufacturing method according to the present application, the lens barrel body further has an inclined surface extending obliquely and inwardly from the top surface to the optical lens located at the topmost side;

wherein, the preparation method further comprises the following steps: and forming a matte layer on the inclined surface.

installing at least one optical lens in the lens barrel body; and

and prefabricating and molding a protective layer and embedding the protective layer in the groove, wherein the first hardness of the upper surface of the protective layer is greater than the second hardness of the top surface of the lens barrel body.

In the preparation method according to the present application, the protective layer is preformed by curing and molding an adhesive composed of an adhesive main body and a pigment mixed in the adhesive main body.

In the production method according to the present application, the protective layer is preformed by curing a mixed material composed of a molding material and a pigment.

wherein, the preparation method further comprises the following steps:

and forming a matte layer on the inclined surface.

According to still another aspect of the present application, there is also provided a method of manufacturing an optical lens, including:

providing a lens barrel body having a top surface;

installing at least one optical lens in the lens barrel body; and

and prefabricating and forming a protective layer and attaching the protective layer to the top surface of the lens barrel body, wherein the first hardness of the upper surface of the protective layer is greater than the second hardness of the top surface of the lens barrel body.

In the manufacturing method according to the present application, the top surface of the lens barrel body is perpendicular to an optical axis set by the optical lens.

In the manufacturing method according to the present application, the top surface of the lens barrel body is at a predetermined inclination angle with respect to the optical axis set by the optical lens.

Further objects and advantages of the present application will become apparent from an understanding of the ensuing description and drawings.

These and other objects, features and advantages of the present application will become more fully apparent from the following detailed description, the accompanying drawings and the claims.

Drawings

The above and other objects, features and advantages of the present application will become more apparent by describing in more detail embodiments of the present application with reference to the attached drawings. The accompanying drawings are included to provide a further understanding of the embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings, like reference numbers generally represent like parts or steps.

Fig. 1 illustrates a process diagram of assembling an optical lens to a motor in the related art.

Fig. 2 illustrates a schematic view of a conventional optical lens provided with a matte layer on a lens end surface thereof.

Fig. 3 illustrates a schematic diagram of a camera module according to an embodiment of the present application.

Fig. 4 illustrates a schematic view of a photosensitive assembly of the camera module according to an embodiment of the present application.

Fig. 5 illustrates a perspective view of an optical lens of the camera module according to an embodiment of the present application.

Fig. 6 illustrates a schematic diagram of a variant implementation of the optical lens according to an embodiment of the present application.

Fig. 7 illustrates a schematic diagram of another variant implementation of the optical lens according to an embodiment of the present application.

Fig. 8 illustrates a schematic diagram of a further variant implementation of the optical lens according to an embodiment of the present application.

Fig. 9 illustrates a schematic diagram comparing the optical lens according to an embodiment of the present application with a conventional optical lens.

Fig. 10 illustrates a schematic diagram of a further variant implementation of an optical lens according to an embodiment of the present application.

Fig. 11 illustrates a schematic diagram of a further variant implementation of the optical lens according to an embodiment of the present application.

Fig. 12 illustrates a schematic diagram of a further variant implementation of the optical lens according to an embodiment of the present application.

Fig. 13A illustrates a schematic diagram of a manufacturing process of the optical lens according to an embodiment of the present application.

Fig. 13B illustrates a schematic diagram of an assembly process of the optical lens according to an embodiment of the present application.

Fig. 13C is a schematic view illustrating an adhesive is applied in the process of manufacturing the optical lens according to the embodiment of the present application.

Fig. 14 illustrates a schematic view of another manufacturing process of the optical lens according to an embodiment of the present application.

Fig. 15 illustrates a schematic diagram of an optical lens according to another embodiment of the present application.

Fig. 16 illustrates a schematic diagram of a variant implementation of the optical lens according to another embodiment of the present application.

Fig. 17 illustrates a schematic diagram of another variant implementation of the optical lens according to another embodiment of the present application.

Fig. 18 illustrates a schematic diagram of yet another variant implementation of the optical lens according to another embodiment of the present application.

Fig. 19 illustrates a schematic diagram of yet another variant implementation of the optical lens according to another embodiment of the present application.

Fig. 20 illustrates a schematic diagram of yet another variant implementation of the optical lens according to another embodiment of the present application.

Fig. 21 illustrates a schematic diagram of yet another variant implementation of the optical lens according to another embodiment of the present application.

Fig. 22 illustrates a schematic diagram of yet another variant implementation of the optical lens according to another embodiment of the present application.

Fig. 23 illustrates a schematic diagram of yet another variant implementation of the optical lens according to another embodiment of the present application.

Fig. 24A illustrates a schematic view of a manufacturing process of the optical lens according to an embodiment of the present application.

Fig. 24B illustrates a schematic diagram of an assembly process of the optical lens according to an embodiment of the present application.

Fig. 25 illustrates a schematic diagram of an optical lens according to yet another embodiment of the present application.

Fig. 26 illustrates a schematic view of the optical lens according to yet another embodiment of the present application.

Fig. 27 illustrates a schematic diagram of an optical lens according to still another embodiment of the present application.

Fig. 28 illustrates a schematic diagram of an optical lens according to yet another embodiment of the present application.

Fig. 29 illustrates a schematic diagram of an implementation variation of the optical lens according to yet another embodiment of the present application.

FIG. 30 illustrates a schematic diagram comparing the optical lens with a unitary optical lens according to yet another embodiment of the present application.

FIG. 31 illustrates a schematic diagram of an electronic device according to an embodiment of the application.

FIG. 32 illustrates a partially cut-away schematic view of the electronic device according to an embodiment of the application.

FIG. 33 illustrates another schematic diagram of the electronic device according to an embodiment of the application.

Detailed Description

Hereinafter, example embodiments according to the present application will be described in detail with reference to the accompanying drawings. It should be understood that the described embodiments are only some embodiments of the present application and not all embodiments of the present application, and that the present application is not limited by the example embodiments described herein.

Summary of the application

As mentioned above, it is a very important industrial problem for module manufacturers and mobile phone manufacturers to ensure that the lens end face of the camera module has relatively good integrity and cleanliness. However, in the actual industry, despite the provision of detection and protection measures, the lens end face of the camera module is often scratched or soiled.

In combination with industrial observation and research, the inventors of the present application found that: the following mechanism is mainly involved in the occurrence of the above-described undesirable phenomenon.

First, the optical lens 1P generally includes a lens barrel 11P and a plurality of optical lenses 12P mounted in the lens barrel 11P. The lens barrel 11P is generally made of a plastic material. In order to increase the material strength, generally, glass fibers or mineral fibers are mixed into an injection molding material (for example, a plastic polymer material) when the lens barrel 11P is injection molded, and these fibers are not melted with the injection molding material, and thus, after the lens barrel 11P is molded, the lens barrel 11P has a fibrous small particle or a fibrous small cluster structure. As such, when the lens end face 10P comes into contact with and rubs against other components, it is particularly easy for the debris thereof to cause lens contamination.

For example, during the assembly of the camera module, the lens end surface 10P is generally used as various jigs for grasping the stressed surface (or anchor surface) of the optical lens 1P, that is, the lens end surface 10P is a surface in contact with various jigs. In the example illustrated in fig. 1, the suction jig is attached to the lens end face 10P of the optical lens 1P to grasp the optical lens 1P and mount it on the motor. Since the material strength of the injection molding material is not high, the lens end face 10P is likely to be scratched and/or contaminated when being engaged with a jig. For another example, during the process of transferring and assembling the camera module to the electronic device, the lens end surface 10P is exposed to the outside to inadvertently collide and rub with foreign objects, resulting in scratches and dirt.

Quantitatively, under the test of hardness measured by the GB/T6739-2006 pencil method, the hardness of the lens end surface 10P is usually B-2H, and under the hardness, the end surface of the lens barrel 11P is easy to scratch and/or generate debris or dirt due to external force damage or contact friction with foreign objects.

In order to reduce the influence of stray light by making the entire optical lens 1P have a low reflectance, conventional mobile phone manufacturers generally perform a matte treatment on the lens end surface 10P, that is, dispose a matte layer 13P on the lens end surface 10P, as shown in fig. 2. The matte layer 13P (e.g., a super black coating made of MgF2 material) is typically chosen to be on the order of nm in thickness. In the assembly process of the camera module, the thickness of the nano-scale coating film is easily polluted and/or scratched due to abrasion caused by contact of a foreign object, and the matte layer 13P is damaged if glue is stained on the lens end face 10P.

In order to prevent the lens end surface 10P from being scratched and/or contaminated due to the fact that the matte layer 13P directly contacts with other components (e.g., a jig), a module manufacturer may choose to provide a protective film 14P on the matte layer 13P. However, the inventors of the present application found that: although the protective film 14P is provided, the lens end face 10P still has a stain, and the present inventors have found that the stain and the scratch are partly caused by the protective film 14P itself. More specifically, for example, in the process of assembling the optical lens 1P, the protective film 14P is in contact with a jig and rubbed, and since the hardness and surface roughness of the protective film 14P itself cannot satisfy the requirements, dirt and scratches are easily generated during the rubbing. Also, contamination may occur in the process of laying and removing the protective film 14P. That is, in the conventional assembly process of the camera module, the original purpose of laying the protective film 14P is contrary to the effect actually achieved: the protective film 14P is provided to prevent the lens end face 10P from being scratched or stained, and then the protective film 14P itself becomes another source of stains.

It is to be noted here that the protective film 14P needs to be removed after the purpose of protecting the matte layer 13P is achieved in the assembly process of the conventional image pickup module. That is, in the prior art, the protection film 14P is an intermediate auxiliary element, which is not finally present on the optical lens 1P as a part of the main body of the optical lens barrel 11P.

Meanwhile, in the conventional optical lens 1P, the lens end face 10P is generally set to a dark color (for example, black), and here, it is understood that the lens end face 10P is formed by the upper surface of the lens barrel 11P when the optical lens 1P is not provided with the matte layer 13P, and the lens end face 10P is formed by the upper surface of the matte layer 13P when the optical lens 1P is provided with the matte layer 13P. The dark-colored lens end surface 10P can effectively reduce stray light formed by reflection from the lens surface (the lens surface here refers to the entire outer surface of the optical lens 1P). However, with the optical lens 1P, most of stray light comes from light reflected by a surface portion close to the optical lens 12P, that is, with the lens surface, it is not necessary to set all the surface portions to a dark color, that is, it is not necessary to set the entire lens end face 10P to a dark color.

Further, when the lens surface is set to a dark color, this will cause the color matching of the electronic device to become monotonous and difficult because the dark color system is difficult to match with other color systems, which is also a main reason that the existing electronic devices are generally single in color matching.

Moreover, when the surface of the lens is dark, the camera module is difficult to provide a decorative effect for the electronic device, and conversely, the camera module may become a damaging factor for the overall aesthetic appearance of the electronic device. That is, the color scheme of the lens surface of the conventional camera module becomes an obstacle factor for optimizing the overall aesthetic effect of the electronic device.

In view of the above technical problems, the present application provides a protective layer having a relatively high surface hardness and a relatively excellent roughness on a lens end surface of an optical lens, so as to prevent the optical lens from being scratched and stained by the protective layer. In particular, at least a portion of the upper surface of the protective layer provides an anchor surface for acting as a force-bearing surface during assembly of the optical lens, the hardness of the anchor surface having a relatively high hardness and a relatively superior roughness to prevent the lens end surface of the optical lens from being scratched and stained by the anchor surface during assembly thereof. Moreover, the protective layer can reflect at least part of the wavelength light in the visible light, so that the color scheme of the lens surface of the optical lens can be changed through the protective layer, the aesthetic effects of the optical lens and the camera module can be enhanced and diversified, and a larger design space is provided for beautifying the whole appearance of the electronic equipment.

Based on this, the present application provides an optical lens, comprising: a barrel structure including a barrel body having a top surface; and at least one optical lens mounted in the barrel body; the lens barrel structure further comprises at least one protection layer formed on the top surface of the lens barrel main body, and the first hardness of the upper surface of the at least one protection layer is greater than the second hardness of the top surface of the lens barrel main body.

In this way, by disposing a protective layer on the lens end face of the optical lens, the protective layer has relatively high surface hardness and relatively excellent roughness, so as to prevent the lens end face of the optical lens from being scratched and reduce the generation of dirt. In particular, at least a portion of the upper surface of the protective layer provides an anchor surface for acting as a force-bearing surface during assembly of the optical lens, the anchor surface having a hardness with a relatively high hardness and a relatively superior roughness to prevent an end surface of the optical lens from being scratched during assembly and reduce the generation of dirt by the anchor surface.

Moreover, the protective layer can reflect at least part of the wavelength light in the visible light, so that the color scheme of the lens surface of the optical lens can be changed through the protective layer, the aesthetic effects of the optical lens and the camera module can be enhanced and diversified, and a larger design space is provided for beautifying the whole appearance of the electronic equipment.

Having described the general principles of the present application, various non-limiting embodiments of the present application will now be described with reference to the accompanying drawings.

Example 1

Fig. 3 illustrates a schematic diagram of a camera module according to an embodiment of the present application. As shown in fig. 3, the camera module 10 according to the embodiment of the present application includes: a photosensitive assembly 20, a lens carrier 40 mounted to the photosensitive assembly 20, and an optical lens 30 mounted to the lens carrier 40 so as to be held in a photosensitive path of the photosensitive assembly 20. Here, in the camera module 10 as illustrated in fig. 3, the camera module 10 is implemented as a fixed focus camera module 10, that is, the lens carrier 40 is a lens holder, and a relative positional relationship between the optical lens 30 and the photosensitive member 20 mounted on the lens holder is maintained constant.

It should be understood by those skilled in the art that the type of the camera module 10 is not limited in the embodiments of the present application. For example, in other examples of the present application, the camera module 10 may also be implemented as a moving focus camera module 10, that is, the lens carrier 40 is implemented as a driving element, wherein the driving element is used for carrying and driving the optical lens 30 to move along the photosensitive path set by the photosensitive component 20, so as to adjust the relative position relationship between the optical lens 30 and the photosensitive component 20. Of course, in the embodiment of the present application, the camera module 10 may also have an optical anti-shake function, i.e., the driving element is implemented as an anti-shake motor. It should also be noted that the camera module 10 may further include a prism or the like to form the periscopic camera module 10.

Fig. 4 illustrates a schematic view of the photosensitive assembly 20 according to an embodiment of the present application, and as shown in fig. 4, the photosensitive assembly 20 according to an embodiment of the present application includes: a wiring board 21, a photosensitive chip 22, a packaging portion 23, and a filter element 24, wherein the photosensitive chip 22 is electrically connected to the wiring board 21 through an electrical connection medium such as a lead; the packaging part 23 is mounted on the circuit board 21 to shield at least a part of the non-photosensitive area of the photosensitive chip 22; the filter element 24 is mounted on the packaging portion 23 to be held on a photosensitive path of the photosensitive chip 22, and is used for filtering imaging light entering the photosensitive chip 22.

Further, as shown in fig. 3 and 5, the optical lens 30 according to the embodiment of the present application includes: a lens barrel structure 31 and at least one optical lens 32 installed in the lens barrel structure 31. The lens barrel structure 31 includes a barrel body 311 having a top surface 310, the barrel body 311 having a mounting cavity formed therein and an opening formed in an upper region thereof and communicating with the mounting cavity, wherein the at least one optical lens 32 is mounted in the barrel body 311 and the optical lens 32 located at the topmost side is exposed to the opening. In the example illustrated in fig. 3, the top surface 310 of the barrel body 311 forms the upper end surface 300 of the optical lens 30, i.e., forms the lens end surface of the optical lens 30.

In the embodiment of the present application, the barrel body 311 is integrally formed by an injection molding material through an injection molding process and has an integral structure, i.e., the optical lens 30 is an integral lens. As described above, in order to increase the strength of the lens barrel body 311, glass fibers or mineral fibers are generally mixed into an injection molding material (for example, a plastic polymer material) when the lens barrel body 311 is injection molded, and since these fibers are not melted with the injection molding material, the lens barrel body 311 forms fibrous small particles or a small cluster structure after the lens barrel body 311 is molded. If the structure of the barrel body 311 is not optimized, it is particularly easy for the upper end surface 300 of the optical lens 30 to be chipped and to cause lens contamination when it comes into contact with and rubs against other components. As will be appreciated by those skilled in the art, the upper end surface 300 of the optical lens 30 is generally used as a stressed surface for gripping the optical lens 30, that is, the upper end surface 300 of the optical lens 30 is a surface in contact with various jigs, and due to the low material strength of the injection molding material, the upper end surface 300 of the lens barrel body 311 is prone to scratch and/or dirt when being matched with the jigs.

In order to solve the above technical problem, in the embodiment of the present application, the lens barrel structure 31 further includes at least one protection layer 312 formed on the top surface 310 of the lens barrel body 311, the protection layer 312 has a relatively high surface hardness, and specifically, a first hardness of an upper surface 313 of the protection layer 312 is greater than a second hardness of the top surface 310 of the lens barrel body 311. Also, the upper surface 313 of the at least one protective layer 312 provides at least one anchor surface 314 for attachment during assembly, a first hardness of the at least one anchor surface 314 being greater than a second hardness of the top surface 310 of the barrel body 311.

That is, in the embodiment of the present application, the lens barrel structure 31 further includes at least one protection layer 312 formed on the upper end surface 300 of the optical lens 30, wherein the at least one protection layer 312 has a relatively high surface hardness, in such a way that the optical lens 30 is prevented from being scratched and/or contaminated on the upper end surface 300 during the assembling process thereof.

Specifically, as illustrated in fig. 13B, in the process of assembling the optical lens 30 to the driving element, the absorption jig clamps the optical lens 30 by absorbing the anchor surface 314 of the protection layer 312, and further rotates the optical lens 30 into the driving element. It should be appreciated that, because the anchor surface 314 has relatively high hardness and relatively excellent roughness, scratches and stains are not easily generated on the anchor surface 314 during the assembly process, so that the upper end surface 300 of the optical lens 30 has high integrity and smoothness after the assembly is completed.

Of course, it should be understood that the protective layer 312 has a relatively high surface hardness, so that it can also protect the lens end surface in other situations, for example, during the process of transferring and assembling the camera module 10 to an electronic device, it can also prevent the lens end surface from being scratched and generating dirt.

In particular, as shown in fig. 3 and 5, in the present embodiment, the upper surface 313 of the protection layer 312 is almost flush with the top surface 310 of the lens barrel body 311, that is, the anchor surface 314 is almost a flat surface and is almost at the same level as the top surface 310 of the lens barrel body 311, and therefore, in the present embodiment, the top surface 310 of the lens barrel body 311 and the upper surface 313 of the protection layer 312 are formed on the upper end surface 300, that is, the lens end surface, of the optical lens 30. In addition, in the embodiment of the present application, the anchor surface 314 is perpendicular to the optical axis set by the optical lens 30, so that in the process of clamping the optical lens 30 by the fixture through the anchor surface 314, the fixture can clamp the optical lens 30 in a coaxial manner, so as to position and install the optical lens 30 conveniently. Moreover, such a position relationship is also beneficial to the more uniform stress between the anchor surface 314 and the jig, so as to more effectively ensure that no scratch or dirt is generated.

More specifically, in the present embodiment, if the hardness is tested by the pencil method, the first hardness of the anchor 314 is in the range of 4H to 5H, and, as described above, the second hardness of the top surface 310 of the barrel body 311 is in the range of B to 2H, that is, in the present embodiment, the first hardness of the anchor 314 is a multiple (2 times or more) of the first hardness of the top surface 310 of the barrel body 311. In the embodiment of the present application, the roughness Ra of the anchor surface 314 is less than or equal to 0.56 um.

It should be noted that, because the anchor surface 314 has a higher hardness, it is not easy to wear when used in cooperation with a jig, so the anchor surface 314 of the protection layer 312 can be directly used to provide a bearing surface or an absorption surface contacting with the jig. Accordingly, due to the configuration of the protective layer 312, the shoulder size of the lens barrel body 311 according to the embodiment of the present application may be reduced by 200um to 500um, that is, the optical lens 30 may have a relatively more compact size, where the shoulder of the lens barrel body denotes an outer peripheral portion adjacent to the lens end face and the shoulder size denotes an outer diameter size of the outer peripheral portion adjacent to the lens end face. Specifically, the shoulder size of the barrel body 311 is less than or equal to 7.5 mm.

Further, as shown in fig. 3 and 5, in the embodiment of the present application, the lens barrel body 311 has a groove 3110 concavely formed on the top surface 310 thereof, wherein the protective layer 312 is formed by curing an adhesive 315 applied in the groove 3110. That is, the optical lens 30 has a groove 3110 concavely formed on the upper surface 300 thereof, wherein the groove 3110 is used for filling an adhesive 315 and forming the protective layer 312 after the adhesive 315 is cured. Accordingly, the shape configuration of the adhesive 315 can be restricted by the shape of the groove 3110. In the present embodiment, the cured upper surface 313 of the adhesive 315 is approximately flush with the upper end surface 300 of the optical lens 30, that is, the cured upper surface 313 of the adhesive 315 is approximately flush with the top surface 310 of the lens barrel body 311, that is, in the present embodiment, the adhesive 315 approximately completely fills the groove 3110, so that the upper surface 313 of the protective layer 312 formed after the curing of the adhesive 315 is approximately flush with the upper end surface 300 of the optical lens 30 (or approximately parallel to the top surface 310 of the lens barrel body 311).

In the embodiment of the present application, the depth range of the groove 3110 is 20 um-400 um, and the width range of the groove 3110 is 150-700 um. It should be noted that the depth and width of the groove 3110 are affected by the viscosity of the adhesive 315, and in particular, increasing the viscosity of the adhesive 315 may reduce its flow properties, i.e., it may be more difficult to lay out the adhesive 315 over a large area; decreasing the viscosity of the adhesive 315 may increase its flow property, resulting in that the adhesive 315 cannot be constantly positioned in a certain area and maintained at a predetermined height. Therefore, in the present embodiment, the relationship between the depth and the width of the groove 3110 and the adhesive 315 should be set in a negative correlation, that is, the viscosity of the adhesive 315 should be reduced as the width and the depth of the groove 3110 are larger.

Preferably, in this embodiment, the depth of the groove 3110 is 50um ± 10um, and the width of the groove 3110 is 400um ± 50 um. With the requirement of the width and depth, in the embodiment of the present application, the viscosity of the adhesive 315 is 2000cps to 8000cps, and preferably, the viscosity of the adhesive 315 is implemented to 4000 cps. When the depth, width and viscosity of the groove 3110 and the adhesive 315 are configured in the above parameters, the adhesive 315 can fill the groove 3110 and the upper surface 313 of the adhesive 315 is a flat surface nearly flush with the upper end surface 300 of the optical lens 30.

It should be noted that, in the embodiment of the present application, the adhesive 315 may be disposed in the groove 3110 through a glue spraying process, a screen printing process, or the like. Specifically, when the glue spraying process is adopted, the adhesive 315 is sprayed into the groove 3110 in a dot-like manner through the piezoelectric valve. As shown in fig. 13C, when a screen printing process is used, a plurality of optical lenses 30 may be placed in a jig, and then a screen having a plurality of circular through holes, the centers of which correspond to the centers of the optical lenses 30, is fitted into the positioning holes of the jig, wherein the adhesive 315 is disposed in the groove 3110 of the optical lens 30 through the circular through holes. In this embodiment, a printing squeegee may be additionally provided to draw the adhesive 315 into the groove 3110 of the optical lens 30.

Further, in the embodiment of the present application, the protective layer 312 formed by the adhesive 315 can reflect at least a portion of the wavelength of the visible light, that is, when the external light irradiates the upper end face 300 of the optical lens 30, the protective layer 312 on the upper end face 300 of the optical lens 30 can reflect at least a portion of the wavelength of the visible light, so that the upper end face 300 of the optical lens 30 has a certain color matching in appearance, and the optical lens 30 has a stronger aesthetic effect and a decorative effect.

Specifically, in the present embodiment, the protection layer 312 may reflect at least one wavelength of visible light or reflect at least two different wavelengths of visible light at the same time. It will be appreciated by those of ordinary skill in the art that for human eye resolution, violet has a wavelength of 400nm to 450nm, blue has a wavelength of 450nm to 480nm, green has a wavelength of 500nm to 560nm, yellow has a wavelength of 580nm to 600nm, orange has a wavelength of 600nm to 650nm, and red has a wavelength of 650nm to 760 nm. Here, the different wavelengths do not indicate the waves having different wavelength values, but the wavelengths of two different colors.

In terms of reflectivity, in the embodiment of the present application, the reflectivity of the protection layer 312 exceeds or is equal to 1.1%, for example, the reflectivity of the protection layer 312 is 1.1% to 1.2%. Of course, in other examples of the present application, the protection layer 312 may have a larger reflectivity, for example, the reflectivity of the protection layer 312 exceeds 2.5%, which is not limited by the present application.

In particular, in the embodiment of the present application, the reflective performance of the protection layer 312 is determined by the material configuration of the adhesive 315. Specifically, in the embodiment of the present application, the adhesive 315 includes an adhesive body and a pigment mixed in the adhesive body, so that the protective layer 312 can reflect at least part of the wavelength of the visible light through the pigment.

The adhesive body is made of any one or a combination of acrylic resin, epoxy resin and phenolic resin, and preferably, the adhesive body is made of epoxy resin because the epoxy resin has less corrosion on the lens barrel body 311.

The pigment is selected from one or a combination of more of phthalocyanine red, carbon black powder, titanium dioxide, phthalocyanine blue, diaryl ether and phthalocyanine green, wherein the phthalocyanine red corresponds to red, the carbon black powder corresponds to black, the titanium dioxide corresponds to white, the phthalocyanine blue corresponds to blue, the diaryl ether corresponds to yellow and the phthalocyanine green corresponds to green. Preferably, the pigment is homogeneously mixed with the adhesive body, i.e. the pigment is homogeneously embedded in the adhesive body. It is worth mentioning that the pigment mixed into the adhesive body can reduce the corrosion of the adhesive body to the lens barrel body 311, and the pigment can also optimize the flow property of the adhesive body, so that the adhesive 315 can relatively more perfectly fill the groove 3110 so that the upper surface 313 of the adhesive 315 is a flat surface.

Preferably, from the viewpoint of aesthetic effect, the pigment can be selected from the group consisting of phthalocyanine red and titanium dioxide in a mass part ratio of 4:1, which can be matched to a pale pink color. Or the pigment can be selected from phthalocyanine blue and titanium dioxide with the mass portion ratio of 1:1, and blue can be matched.

It should be noted that, in the embodiment of the present application, the protection layer 312 has an annular structure, and the portion of the optical lens 32 located at the topmost side, which is exposed to the lens barrel main body 311, is completely and circumferentially wrapped in the protection layer 312. From the visual appearance, it can be clearly seen that the optical lens 32 exposed to the opening and a ring of color layers surrounding the optical lens 32 are provided on the upper end surface 300 of the optical lens 30 to form a visual effect similar to "smart eye".

In addition, as shown in fig. 3, in the embodiment of the present application, the lens barrel body 311 further has an inclined surface extending obliquely and inwardly from the top surface 310 to the optical lens 32 located at the topmost side, and the lens barrel structure 31 further includes a matte layer 316 disposed on the inclined surface, wherein the thickness of the matte layer 316 is less than or equal to 1um, and the reflectivity of the matte layer 316 is less than 0.8%. That is, in the embodiment of the present application, the optical lens 30 is provided with the matte layer 316 at a position close to the optical lens 30 located at the topmost side inside the upper end surface 300 of the optical lens 30, so that light rays emitted from the lens surface close to the optical axis are reduced by the matte layer 316, the influence of stray light is reduced, and the imaging quality is improved.

As described above, with the optical lens 30, most of stray light comes from light reflected by a portion of the lens surface near the optical axis, that is, with the lens surface, it is not necessary to set all the surface portions to a dark color, that is, it is not necessary to set the entire lens end face to a dark color. Accordingly, in the embodiment of the present application, the protection layer 312 is disposed on the lens surface far away from the optical axis, and the matte layer 316 is disposed on the lens surface close to the optical axis, so as to effectively prevent the influence of stray light, and to achieve the aesthetic effect of the optical lens 30.

It is worth mentioning that when laying the matte layer 316, the matte layer 316 may further cover the transition region between the inclined surface and the protection layer 312 (i.e. the groove 3110) to further enhance the technical effect of preventing stray light.

In summary, the image capturing module 10 and the optical lens 30 thereof according to the embodiment of the present disclosure are clarified, in which a protective layer 312 is disposed on the lens end surface of the optical lens 30, and the protective layer 312 has a relatively high surface hardness and a relatively excellent roughness, so as to prevent the lens end surface of the optical lens 30 from being scratched and reduce the generation of dirt. In particular, at least a portion of the upper surface 313 of the protective layer 312 provides an anchor surface 314 for acting as a force-bearing surface during assembly of the optical lens 30, and the hardness of the anchor surface 314 has relatively high hardness and relatively superior roughness, so as to prevent the end surface of the optical lens 30 from being scratched and reduce the generation of dirt during assembly by the anchor surface 314. Moreover, the protective layer 312 can reflect at least part of the visible light with wavelengths, so that the color scheme of the lens surface of the optical lens 30 can be changed through the protective layer 312, so that the aesthetic effects of the optical lens 30 and the camera module 10 can be enhanced and diversified, and a larger design space can be provided for beautifying the overall appearance of the electronic device.

Fig. 13A illustrates a schematic diagram of a manufacturing process of the optical lens 30 according to an embodiment of the present application. As shown in fig. 13A, the process of manufacturing the optical lens 30 according to the embodiment of the present application includes the following steps.

First, a lens barrel body 311 is provided, the lens barrel body 311 has a top surface 310 and a groove 3110 formed on the top surface 310;

then, at least one optical lens 32 is mounted in the barrel body 311;

then, an adhesive 315 is applied in the groove 3110, the adhesive 315 being composed of an adhesive body and a pigment mixed in the adhesive body;

then, the adhesive 315 is cured to form a protective layer 312, wherein a first hardness of an upper surface 313 of the protective layer 312 is greater than a second hardness of the top surface 310 of the lens barrel body 311.

In particular, in the present embodiment, at least a portion of the upper surface 313 of the at least one protective layer 312 provides at least one anchor surface 314 for attachment during assembly.

In particular, in the embodiment of the present application, the adhesive 315 may be applied in the groove 3110 by spraying glue or screen printing. That is, in the present embodiment, applying the adhesive 315 in the groove 3110 includes: forming the adhesive 315 in the groove 3110 by screen printing; alternatively, applying adhesive 315 within the recess 3110 includes: the adhesive 315 is applied in the groove 3110 by spraying.

Further, as shown in fig. 13A, in the manufacturing process of the optical lens barrel 30 according to the embodiment of the present application, the barrel body 311 further has an inclined surface extending from the top surface 310 to the optical lens 32 located at the topmost side, and the manufacturing method further includes: a matte layer 316 is formed on the inclined surface.

Fig. 13B illustrates a schematic diagram of an assembling process of the optical lens 30 according to an embodiment of the present application. As shown in fig. 13B, during the assembling process, the upper surface 313 of the protection layer 312 provides an anchor surface 314 as a stress surface, wherein the absorption fixture is absorbed on the anchor surface 314 rather than the top surface 310 of the lens barrel body 311, and the anchor surface 314 is not easily scratched or contaminated during the assembling process because the anchor surface 314 has relatively high hardness and relatively excellent roughness. That is, the upper end surface 300 of the optical lens 30 has relatively high integrity and cleanliness after the assembly is completed.

Moreover, in the embodiment of the present application, the protective layer 312 formed by the adhesive 315 can reflect at least a portion of wavelengths of visible light, that is, when external light is irradiated onto the upper end surface 300 of the optical lens 30, the protective layer 312 located on the upper end surface 300 of the optical lens 30 can reflect at least a portion of wavelengths of visible light, so that the upper end surface 300 of the optical lens 30 has a certain color matching in appearance, and the optical lens 30 has a stronger aesthetic effect and a decorative effect.

Fig. 6 illustrates a schematic diagram of a variant implementation of the optical lens 30 according to an embodiment of the present application. As shown in fig. 6, in this modified embodiment, the groove 3110 is implemented as an edge groove, that is, the groove 3110 extends to the edge of the lens barrel body 311, so that the width dimension of the groove 3110 is expanded, and thus the depth dimension of the groove 3110 can be reduced accordingly. In particular, when the groove 3110 is implemented as an edge groove, the adhesive 315 should be prevented from overflowing from the edge groove as much as possible when the adhesive 315 is laid out.

Fig. 7 illustrates a schematic diagram of another variant implementation of the optical lens 30 according to an embodiment of the present application. As shown in fig. 7, in this modified embodiment, the bottom surface of the groove 3110 is configured as a curved surface convex downward because: considering that the adhesive 315 has surface tension, normally, the upper surface 313 of the adhesive 315 is an upwardly convex arc surface, and the surface tension of the adhesive 315 can be partially offset by configuring the lower surface of the groove 3110 to be a downwardly convex curved surface, so that the upper surface 313 of the adhesive 315 is a flat surface, and thus the anchor surface 314 of the protective layer 312 formed after the adhesive 315 is cured is a flat surface.

Fig. 8 illustrates a schematic diagram of a further variant implementation of the optical lens 30 according to an embodiment of the present application.

As shown in fig. 8, in this example, the protective layer 312 is formed directly on the top surface 310 of the lens barrel body 311 in an overlapping manner, that is, in this example, the adhesive 315 is directly disposed on the top surface 310 of the lens barrel body 311. It is particularly noted that in this example the upper surface 313 of the protective layer 312 forms the upper end face 300 of the optical lens 30 and the anchor face 314 provided by the upper surface 313 acts as a force-bearing face during assembly of the optical lens 30.

In particular, in this example, the anchor surface 314 of the protection layer 312 has a height higher than that of the matte layer 316, and when a foreign object touches the optical lens 30, since the protection layer 312 can increase the height of the upper end surface 300 of the optical lens 30, the matte layer 316 can be protected from being worn, as shown in fig. 9. That is, the protective layer 312 disposed on the top surface 310 of the lens barrel body 311 can function to protect the matte layer 316.

It is worth mentioning that in the example as illustrated in fig. 8 and 9, when the adhesive 315 is disposed, special care should be taken to prevent the adhesive 315 from overflowing to cause the optical lens 32 of the optical lens 30 to be contaminated. Also, since the adhesive 315 is directly disposed on the top surface 310 of the lens barrel body 311 to form the protective layer 312, the flatness of the upper surface 313 of the protective layer 312 (i.e., the anchor surface 314) will be reduced due to the surface tension of the adhesive 315, and the anchor surface 314 is normally an arc surface protruding upward.

Accordingly, in order to optimize the surface flatness of the anchor surface 314, a limiting fixture may be used to limit and regulate the flow of the adhesive 315 during the application of the adhesive 315, so as to improve the surface flatness of the anchor surface 314 of the protection layer 312. It should be understood that the limiting fixture functions to enclose a pool of adhesive 315 for disposing the adhesive 315 on the top surface 310 of the barrel body 311, so as to regulate and limit the flow of the adhesive 315 through the pool of adhesive 315, thereby optimizing the surface flatness of the upper surface 313 of the protection layer 312 after curing, i.e., the surface flatness of the anchor surface 314.

Also, in this example, the protective layer 312 formed by the adhesive 315 is capable of reflecting at least a portion of wavelengths of visible light, that is, when external light is irradiated onto the upper end face 300 of the optical lens 30, the protective layer 312 on the upper end face 300 of the optical lens 30 is capable of reflecting at least a portion of wavelengths of visible light, so that the upper end face 300 of the optical lens 30 has a certain color matching in appearance, and the optical lens 30 has a stronger aesthetic effect and decorative effect.

In particular, in this example, the protective layer 312 may reflect at least one wavelength of visible light or simultaneously reflect at least two different wavelengths of visible light. It will be appreciated by those of ordinary skill in the art that for human eye resolution, violet has a wavelength of 400nm to 450nm, blue has a wavelength of 450nm to 480nm, green has a wavelength of 500nm to 560nm, yellow has a wavelength of 580nm to 600nm, orange has a wavelength of 600nm to 650nm, and red has a wavelength of 650nm to 760 nm. Here, the different wavelengths do not indicate the waves having different wavelength values, but the wavelengths of two different colors.

In view of the reflectivity, in this example, the reflectivity of the protective layer 312 exceeds or is equal to 1.1%, for example, the reflectivity of the protective layer 312 is 1.1% -1.2%. Of course, in other examples of the present application, the protection layer 312 may have a larger reflectivity, for example, the reflectivity of the protection layer 312 exceeds 2.5%, which is not limited by the present application.

In particular, in this example, the reflective properties of the protective layer 312 are determined by the material configuration of the adhesive 315. Specifically, in this example, the adhesive 315 includes an adhesive body and a pigment mixed in the adhesive body to enable the protective layer 312 to reflect at least part of the wavelength of visible light by the pigment.

It is worth mentioning that, in this example, the protective layer 312 has an annular structure, and the portion of the optical lens 32 located at the topmost side, which is exposed to the barrel body 311, is entirely and circumferentially enclosed within the protective layer 312. From the visual appearance, it can be clearly seen that the optical lens 32 exposed to the opening and a ring of color layers surrounding the optical lens 32 are provided on the upper end surface 300 of the optical lens 30 to form a visual effect similar to "smart eye".

Further, as shown in fig. 8, in this example, the lens barrel body 311 further has an inclined surface extending obliquely and inwardly from the top surface 310 to the optical lens 32 located at the topmost side, and the lens barrel structure 31 further includes a matte layer 316 provided on the inclined surface, wherein the thickness of the matte layer 316 is less than or equal to 1um, and the reflectance of the matte layer 316 is less than 0.8%. That is, in this example, the optical lens 30 is provided with a matte layer 316 at a position inside the upper end surface 300 thereof near the optical lens 30 located at the topmost side, so that light rays emitted from the lens surface near the optical axis are reduced by the matte layer 316, the influence of stray light is reduced, and the imaging quality is improved.

Fig. 10 illustrates a schematic diagram of a further variant implementation of the optical lens 30 according to an embodiment of the present application.

As shown in fig. 10, in this example, the top surface 310 of the barrel body 311 is configured as an inclined surface, wherein the height of the inclined surface near the optical axis is higher than the height thereof away from the optical axis, that is, the inclined surface is inclined downward from near the optical axis to far from the optical axis, in such a way that the optical lens 30 is effectively prevented from being contaminated due to the adhesive 315 overflowing when the adhesive 315 is laid to form the protective layer 312. That is, by disposing the inclined surface, the risk of the adhesive 315 overflowing into the optical lens 30 during the process of laying out the adhesive 315 can be reduced.

It should be noted that in this example, the lens barrel body 311 is not provided with the notch 3110 because the notch 3110 is designed in consideration of the thickness of the lens barrel body 311, particularly, the thickness of the lens barrel body 311 at the lens end face, and therefore, when the lens end face thickness is too low to open the notch 3110, the adhesive 315 can be laid out to form the protective layer 312 by providing the inclined face as well, so as to solve the technical problem.

It should be noted that, since the adhesive 315 is directly disposed on the top surface 310 of the lens barrel body 311 to form the protection layer 312, the flatness of the upper surface 313 of the protection layer 312 (i.e., the anchor surface 314) will be reduced due to the surface tension of the adhesive 315, and the anchor surface 314 is normally an arc surface protruding upward.

Fig. 11 illustrates a schematic diagram of a further variant implementation of the optical lens 30 according to an embodiment of the present application. As shown in fig. 11, in this example, the protection layer 312 is formed directly on the top surface 310 of the lens barrel body 311 in an overlapping manner, that is, the adhesive 315 is directly disposed on the top surface 310 of the lens barrel body 311. Also, the anchor surface 314 of the protective layer 312 forms the upper end surface 300 of the optical lens 30 and the anchor surface 314 serves as a force-bearing surface during the assembly of the optical lens 30.

In particular, in this example, the protective layer 312 has a circular arc shape on both sides thereof to increase the viewing angle of the camera module 10. That is, the protection layer 312 adopts arc transition at both ends of the anchor surface 314 thereof to increase the reflection angle, thereby increasing the viewing angle of the camera module 10. Here, in this example, the reflection angle of the camera module 10 at the lens end surface thereof can be increased to 45 ° to 60 ° by the circular arc transition design.

Fig. 12 illustrates a schematic diagram of a further variant implementation of the optical lens 30 according to an embodiment of the present application. As shown in fig. 12, in this example, at least two protective layers 312 are disposed on the top surface 310 of the lens barrel body 311, that is, the lens barrel structure 31 includes at least two protective layers 312 formed on the upper end surface 300 of the optical lens 30.

More specifically, in this example, it is exemplified that the lens barrel structure 31 includes two of the protective layers 312, and for convenience of description, the two protective layers 312 are defined as: a first protective layer 312 and a second protective layer 312. As shown in fig. 12, in this example, the second protective layer 312 is located outside the first protective layer 312, and the height of the second protective layer 312 is higher than the height of the first protective layer 312, so that, when the image pickup module 10 is assembled in an electronic apparatus, the second protective layer 312 located outside and having a higher height can interfere with a cover of the electronic apparatus, thereby reducing the possibility of chipping of the lens barrel body 311 due to impact during a reliability test. That is, the second protection layer 312 located at the outer side and having a higher height can function as a buffer layer to reduce the risk of damage to the optical lens 30 due to impact.

Also, in this example, the first protective layer 312 and the second protective layer 312 are capable of reflecting light of different wavelengths in visible light, respectively, that is, from the visual effect, the optical lens 30 has a multi-layer ring effect of different color matching on the lens end surface to further enhance the aesthetic effect and the decorative performance of the optical lens 30. Of course, the first protective layer 312 and the second protective layer 312 can also reflect light with the same wavelength, and this is not a limitation of the present application.

As shown in fig. 12, in this example, the first protective layer 312 and the second protective layer 312 are formed by an adhesive 315 directly disposed on the top surface 310 of the lens barrel body 311. It should be understood that, in other examples, the first protective layer 312 and the second protective layer 312 may also be formed by an adhesive 315 disposed in a groove 3110 formed on the top surface 310 of the lens barrel body 311, and this is not intended to limit the present application.

It is worth mentioning that, in the manufacturing process of the optical lens 30 as described above, there is a possibility that the adhesive 315 contaminates the optical lens 32 of the optical lens 30 when the adhesive 315 is laid out. Accordingly, in order to avoid the optical lens 32 being contaminated by the adhesive 315, in some manufacturing processes, an auxiliary layer (or a sacrificial layer) may be pre-disposed on the upper surface 313 of the optical lens 30, and then the adhesive 315 is disposed on the auxiliary layer, and the auxiliary layer is removed after the manufacturing process is completed.

Fig. 14 illustrates a schematic diagram of another manufacturing process of the optical lens 30 according to an embodiment of the present application. As shown in fig. 14, in this example, the process of manufacturing the optical lens 30 includes the following steps. First, an auxiliary layer is disposed on the upper end surface 300 of the optical lens 30 to cover and protect the optical lens 32, wherein the auxiliary layer is made of a removable material, for example, a photolithographic material or a chemically etchable material. Then, the protective layer 312 is formed on the auxiliary layer, wherein the protective layer 312 provides an anchor surface 314 for being forced during assembly, and the protective layer 312 is capable of reflecting at least part of the wavelengths of visible light. The auxiliary layer is then removed, for example by exposure when it is made of a photolithographic material, it being understood that the performance of the optical lens 30 is not affected after the auxiliary layer is removed.

Example 2

Fig. 15 illustrates a schematic diagram of an optical lens according to another embodiment of the present application. As shown in fig. 15, the optical lens 30A according to another embodiment of the present application includes: a lens barrel structure 31 and at least one optical lens 32 installed in the lens barrel structure 31. The lens barrel structure 31 includes a barrel body 311 having a top surface 310, the barrel body 311 having a mounting cavity formed therein and an opening formed in an upper region thereof and communicating with the mounting cavity, wherein the at least one optical lens 32 is mounted in the barrel body 311 and the optical lens 32 located at the topmost side is exposed to the opening. In the example illustrated in fig. 15, the top surface 310 of the barrel body 311 forms the upper end face 300 of the optical lens 30A, that is, the top surface 310 of the barrel body 311 forms the lens end face of the optical lens 30A.

In the embodiment of the present application, the barrel body 311 is integrally formed by an injection molding material through an injection molding process and has an integral structure, i.e., the optical lens 30A is an integral lens. As described above, in order to increase the strength of the lens barrel body 311, glass fibers or mineral fibers are generally mixed into an injection molding material (for example, a plastic polymer material) when the lens barrel body 311 is injection molded, and since these fibers are not melted with the injection molding material, the lens barrel body 311 forms fibrous small particles or a small cluster structure after the lens barrel body 311 is molded. If the structure of the barrel body 311 is not optimized, it is particularly easy for the upper end surface 300 of the optical lens 30A to be chipped and dirty when it comes into contact with and rubs against other components. As will be appreciated by those skilled in the art, the upper end surface 300 of the optical lens 30A is generally used as a stress surface for various jigs to grasp the optical lens 30A, that is, the upper end surface 300 of the optical lens 30A is a surface in contact with various jigs, and due to the low material strength of the injection molding material, the upper end surface 300 of the lens barrel body 311 is prone to scratch and/or dirt when being matched with the jigs.

In order to solve the above technical problem, in the embodiment of the present application, the lens barrel structure 31 further includes at least one protection layer 312A formed on the top surface 310 of the lens barrel body 311, the protection layer 312A has a relatively high surface hardness, and specifically, a first hardness of an upper surface 313A of the protection layer 312A is greater than a second hardness of the top surface 310 of the lens barrel body 311. Also, an upper surface 313A of the at least one protective layer 312A provides at least one anchor surface 314A for being attached during assembly, a first hardness of the at least one anchor surface 314A being greater than a second hardness of the top surface 310 of the barrel body 311.

That is, in the embodiment of the present application, the lens barrel structure 31 further includes at least one protection layer 312A formed on the upper end surface 300 of the optical lens 30A, wherein the at least one protection layer 312A has a relatively high surface hardness, in such a way that the optical lens 30A is prevented from generating scratches and/or dirt on the upper end surface 300 thereof during the assembling process thereof. Of course, it should be understood that the protective layer 312A has a relatively high surface hardness, so that it can also protect the lens end surface in other situations, for example, during the process of transferring and assembling the camera module to the electronic device, it can also prevent the lens end surface from being scratched and generating dirt.

For example, as illustrated in fig. 24B, in the process of assembling the optical lens 30A to the driving element, the suction jig clamps the optical lens 30A by sucking the anchor surface 314A of the protection layer 312A, and then rotates the optical lens 30A into the driving element. It should be appreciated that, because the anchor surface 314A has relatively high hardness and relatively excellent roughness, scratches and stains are not easily generated on the anchor surface 314A during the assembly process, so that the lens end surface of the optical lens 30A has high integrity and smoothness after the assembly is completed.

As shown in fig. 15, in the embodiment of the present application, the upper surface 313A of the protection layer 312A is almost flush with the top surface 310 of the lens barrel body 311, that is, the anchor surface 314A is almost a flat surface and is almost at the same level as the top surface 310 of the lens barrel body 311, and therefore, in the embodiment of the present application, the top surface 310 of the lens barrel body 311 and the upper surface 313A of the protection layer 312A are formed on the upper end surface 300, that is, the lens end surface, of the optical lens 30A. In addition, in the embodiment of the present application, the anchor surface 314A is perpendicular to the optical axis set by the optical lens 30A, so that in the process of clamping the optical lens 30A by the fixture through the anchor surface 314A, the fixture can clamp the optical lens 30A in a coaxial manner, so that the optical lens 30A is positioned and mounted conveniently. Moreover, such a position relationship is also beneficial to the more uniform stress between the anchor surface 314A and the jig, so as to more effectively ensure that no scratch or dirt is generated.

More specifically, in the present embodiment, if the hardness is tested by the pencil method, the first hardness of the anchor 314A ranges from 4H to 5H, and, as described above, the second hardness of the top surface 310 of the barrel body 311 ranges from B to 2H, that is, in the present embodiment, the first hardness of the anchor 314A is a multiple (2 times or more) of the first hardness of the top surface 310 of the barrel body 311. In the embodiment of the present application, the roughness Ra of the anchor surface 314A is less than or equal to 0.56 um.

It should be noted that, because the anchor surface 314A has a higher hardness, it is not easy to wear when used in cooperation with a jig, so the anchor surface 314A of the protection layer 312A can be directly used to provide a bearing surface or an absorption surface contacting with the jig. Accordingly, due to the configuration of the protective layer 312A, the shoulder size of the lens barrel body 311 according to the embodiment of the present application may be reduced by 200um to 500um, that is, the optical lens 30A may have a relatively more compact size, where the shoulder of the lens barrel body represents an outer peripheral portion adjacent to the lens end surface and the shoulder size represents an outer diameter size of the outer peripheral portion adjacent to the lens end surface. Specifically, the shoulder size of the barrel body 311 is less than or equal to 7.5 mm.

More specifically, as shown in fig. 15, in the embodiment of the present application, the lens barrel body 311 has a groove 3110 concavely formed on the top surface 310 thereof, wherein the protective layer 312A is fitted into the groove 3110 after being preformed. That is, the optical lens 30A has a groove 3110 concavely formed on a lens end surface thereof, and the protective layer 312A is a separately molded member and is integrated with the lens barrel body 311 in such a manner as to be fitted in the groove 3110. That is, in the embodiment of the present application, the protection layer 312A is a preform rather than a member formed by curing the adhesive disposed in the groove 3110, compared to the embodiment 1.

In particular, in the present embodiment, the protective layer 312A, which is pre-molded, has a size and shape that is nearly straight with the groove 3110, so that the upper surface 313A of the protective layer 312A (i.e., the anchor surface 314A) can be flush with the top surface 310 of the lens barrel body 311, i.e., flush with the lens end surface of the optical lens 30A, when the protective layer 312A is mounted in the groove 3110. More specifically, in the embodiment of the present application, the groove 3110 has a ring shape, the depth of the groove 3110 ranges from 20um to 400um, the width of the groove 3110 ranges from 150um to 700um, that is, the protection layer 312A also has a ring shape, and has a corresponding size configuration with the groove 3110.

It is worth mentioning that, compared to the protective layer 312A formed by the adhesive illustrated in embodiment 1, in the embodiment of the present application, the surface precision of the protective layer 312A is easier to ensure and easier to be made higher. In particular, in the embodiment of the present application, the roughness Ra of the anchor surface 314A is less than or equal to 0.56um, and the parallelism of the anchor surface 314A is 5um to 20 um.

In the embodiment of the present application, the protection layer 312A may be preformed by curing and molding an adhesive. For example, by applying the adhesive in a molding die to form the protective layer 312A after curing the adhesive. Of course, the protection layer 312A may be prefabricated by other materials and through other processes, for example, through a molding process by a molding material (epoxy resin, etc.), which is not limited by the present application.

Further, in the embodiment of the present application, the protection layer 312A is also capable of reflecting at least a part of wavelengths of visible light, that is, when external light irradiates the lens end surface of the optical lens 30A, the protection layer 312A formed on the lens end surface of the optical lens 30A is capable of reflecting at least a part of wavelengths of visible light, so that the upper end surface 300 of the optical lens 30A has a certain color matching in appearance, and the optical lens 30A has a stronger aesthetic effect and a decorative effect.

Specifically, in the embodiment of the present application, the protection layer 312A may reflect at least one wavelength of visible light or reflect at least two different wavelengths of visible light at the same time. It will be appreciated by those of ordinary skill in the art that for human eye resolution, violet has a wavelength of 400nm to 450nm, blue has a wavelength of 450nm to 480nm, green has a wavelength of 500nm to 560nm, yellow has a wavelength of 580nm to 600nm, orange has a wavelength of 600nm to 650nm, and red has a wavelength of 650nm to 760 nm. Here, the different wavelengths do not indicate the waves having different wavelength values, but the wavelengths of two different colors.

In terms of reflectivity, in the embodiment of the present application, the reflectivity of the protection layer 312A exceeds or is equal to 1.1%, for example, the reflectivity of the protection layer 312A is 1.1% to 1.2%. Of course, in other examples of the present application, the protection layer 312A may have a larger reflectivity, for example, the reflectivity of the protection layer 312A exceeds 2.5%, which is not limited by the present application.

In particular, in the embodiment of the present application, the reflective performance of the protective layer 312A is determined by the material of which the protective layer 312A is made, that is, the color scheme of the optical lens 30A at the lens end surface thereof is determined by the material of which the protective layer 312A is made.

For example, when the protective layer 312A is preformed by curing and molding an adhesive, the reflective property of the protective layer 312A is determined by the material composition of the adhesive. In one specific example, the adhesive includes an adhesive body and a pigment mixed with the adhesive body to allow the protective layer 312A to reflect at least part of the wavelength of visible light through the pigment. The adhesive body is made of any one or a combination of acrylic resin, epoxy resin and phenolic resin, and preferably, the adhesive body is made of epoxy resin because the epoxy resin has less corrosion on the lens barrel body 311. The pigment is selected from one or a combination of more of phthalocyanine red, carbon black powder, titanium dioxide, phthalocyanine blue, diaryl ether and phthalocyanine green, wherein the phthalocyanine red corresponds to red, the carbon black powder corresponds to black, the titanium dioxide corresponds to white, the phthalocyanine blue corresponds to blue, the diaryl ether corresponds to yellow and the phthalocyanine green corresponds to green. Preferably, the pigment is homogeneously mixed with the adhesive body, i.e. the pigment is homogeneously embedded in the adhesive body. Preferably, from the viewpoint of aesthetic effect, the pigment can be selected from the group consisting of phthalocyanine red and titanium dioxide in a mass part ratio of 4:1, which can be matched to a pale pink color. Or the pigment can be selected from phthalocyanine blue and titanium dioxide with the mass portion ratio of 1:1, and blue can be matched.

When the protective layer 312A is formed by molding a molding material in a pre-manufacturing manner, a pigment may be mixed into the molding material, wherein the pigment is selected from one or a combination of several of phthalocyanine red, carbon black powder, titanium dioxide, phthalocyanine blue, diaryl ether, and phthalocyanine green, where phthalocyanine red corresponds to red, carbon black powder corresponds to black, titanium dioxide corresponds to white, phthalocyanine blue corresponds to blue, diaryl ether corresponds to yellow, and phthalocyanine green corresponds to green. Preferably, the pigment is homogeneously mixed with the molding material. From the viewpoint of aesthetic effect, the pigment can be selected from the group consisting of phthalocyanine red and titanium dioxide with the mass part ratio of 4:1, and can be matched with light pink. Or the pigment can be selected from phthalocyanine blue and titanium dioxide with the mass portion ratio of 1:1, and blue can be matched.

As shown in fig. 15, in the present embodiment, the protective layer 312A has an annular structure, and the portion of the optical lens 32 located at the topmost side, which is exposed to the lens barrel main body 311, is completely and circumferentially enclosed in the protective layer 312A. From the visual appearance, the optical lens 32 exposed to the opening and a color layer surrounding the optical lens 32 are clearly seen on the lens end surface of the optical lens 30A to form a visual effect similar to "smart eye".

In addition, as shown in fig. 15, in the embodiment of the present application, the lens barrel body 311 further has an inclined surface extending obliquely and inwardly from the top surface 310 to the optical lens 32 located at the topmost side, and the lens barrel structure 31 further includes a matte layer 316 disposed on the inclined surface, wherein the thickness of the matte layer 316 is less than or equal to 1um, and the reflectivity of the matte layer 316 is less than 0.8%. That is, in the embodiment of the present application, the optical lens 30A is provided with the matte layer 316 at a position close to the optical lens 30A located at the topmost side inside the upper end surface 300 thereof, so that light rays emitted from the lens surface close to the optical axis accessory are reduced by the matte layer 316, the influence of stray light is reduced, and the imaging quality is improved.

As described above, with the optical lens 30A, most of stray light comes from light reflected by a portion of the lens surface near the optical axis, that is, with respect to the lens surface (particularly with respect to the lens end face), it is not necessary to set all the surface portions to a dark color, that is, it is not necessary to set the entire lens end face to a dark color. Accordingly, in the embodiment of the present application, the protection layer 312A is disposed on the lens surface far away from the optical axis, and the matte layer 316 is disposed on the lens surface close to the optical axis, so as to effectively prevent the influence of stray light, and to achieve the aesthetic effect of the optical lens 30A.

It is worth mentioning that when the matte layer 316 is laid, the matte layer 316 may further cover a transition region between the inclined surface and the protection layer 312A (i.e., the groove 3110) to further enhance the technical effect of preventing stray light.

In summary, the image pickup module and the optical lens 30A thereof according to the embodiment of the present application are clarified by disposing a protection layer 312A on the lens end surface of the optical lens 30A, the protection layer 312A providing an anchor surface 314A serving as a stress surface during the assembly of the optical lens 30A, the anchor surface 314A having a hardness with a relatively high hardness and a relatively excellent roughness, so as to prevent the lens end surface of the optical lens 30A from being scratched and reduce the generation of dirt by the anchor surface 314A. Moreover, the protective layer 312A can reflect at least part of the visible light with wavelengths, so that the color scheme of the lens surface of the optical lens 30A can be changed through the protective layer 312A, so that the aesthetic effects of the optical lens 30A and the camera module can be enhanced and diversified, and a larger design space can be provided for beautifying the overall appearance of the electronic device.

Fig. 24A illustrates a schematic diagram of a manufacturing process of the optical lens 30A according to an embodiment of the present application. As shown in fig. 24A, the process of manufacturing the optical lens 30A according to the embodiment of the present application includes the following steps.

then, a protection layer 312A is provided; the protective layer 312A may be preformed by curing the adhesive, or the protective layer 312A may be preformed by curing the mixture of the molding material and the pigment, which is not limited in this application.

Then, at least one optical lens 32 is mounted in the barrel body 311;

then, the protective layer 312A is fitted into the groove 3110, wherein the protective layer 312A and the groove 3110 have a size and shape that are conformed such that when the protective layer 312A is fitted into the groove 3110, a first hardness of an upper surface 313A of the protective layer 312A is greater than a second hardness of the top surface 310 of the lens barrel body 311, wherein the upper surface 313A of the protective layer 312A is flush with the top surface 310 of the lens barrel body 311 and provides an anchor surface 314A for being attached during assembly.

Further, as shown in fig. 24A, in the manufacturing process of the optical lens barrel 30A according to the embodiment of the present application, the barrel body 311 further has an inclined surface extending from the top surface 310 to the optical lens 32 located at the topmost side, and the manufacturing method further includes: a matte layer 316 is formed on the inclined surface.

Fig. 24B illustrates a schematic diagram of an assembly process of the optical lens 30A according to an embodiment of the present application. As shown in fig. 24B, during the assembly process, the upper surface 313A of the protection layer 312A provides an anchor surface 314A as a stress surface, wherein the suction jig is sucked onto the anchor surface 314A instead of the top surface 310 of the barrel body 311, and the anchor surface 314A is not easily scratched or contaminated during the assembly process because the anchor surface 314A has relatively high hardness and relatively excellent roughness. That is, the upper end surface 300 of the optical lens 30A has relatively high integrity and cleanliness after the assembly is completed.

Moreover, in the embodiment of the present application, the protection layer 312A is capable of reflecting at least part of the wavelengths of the visible light, that is, when the external light irradiates the lens end surface of the optical lens 30A, the protection layer 312A on the lens end surface of the optical lens 30A is capable of reflecting at least part of the wavelengths of the visible light, so that the upper end surface 300 of the optical lens 30A has a certain color matching in appearance, and the optical lens 30A has a stronger aesthetic effect and a decorative effect. In particular, since the protective layer 312A has an annular structure, the protective layer 312A causes the optical lens 30A to have a certain (or several) color-matching annular zone in appearance.

Fig. 16 illustrates a schematic diagram of a modified implementation of the optical lens 30A according to an embodiment of the present application. As shown in fig. 16, in this modified embodiment, the groove 3110 is implemented as an edge groove, that is, the groove 3110 extends to the edge of the lens barrel body 311, so that the width dimension of the groove 3110 is expanded, that is, the anchor surface 314A of the protective layer 312A can extend to the edge of the lens barrel body 311, so that the anchor surface 314A can cover the lens end surface of the optical lens 30A with a larger area, thereby further facilitating to hold the optical lens 30A as the anchor surface 314A during the assembly process of the optical lens 30A.

Fig. 17 illustrates a schematic diagram of a further variant implementation of the optical lens 30A according to an embodiment of the present application. As shown in fig. 17, in this example, the lens barrel body 311 does not include the groove 3110 concavely formed on the top surface 310 thereof, and the protective layer 312A is directly formed on the top surface 310 of the lens barrel body 311 in an overlapping manner, that is, in this example, the top surface 310 of the lens barrel body 311 is a flat surface, and the protective layer 312A is directly attached on the top surface 310 of the lens barrel body 311 in an overlapping manner. Also, the protective layer 312A is laid out in the above-described manner, the anchor face 314A of the protective layer 312A forms a part of the lens end face of the optical lens 30A and the anchor face 314A serves as a force receiving face in the assembly process of the optical lens 30A.

It is worth mentioning that, since the protection layer 312A is a preform in the embodiment of the present application, the processing precision of the protection layer 312A can be made relatively higher, so that it has relatively higher surface precision and surface flatness. That is, the upper surface 313A of the protective layer 312A (i.e., the anchor surface 314A) has relatively higher surface flatness and surface roughness. Preferably, in the embodiment of the present application, the anchor surface 314A of the protective layer 312A is parallel to the top surface 310 of the lens barrel body 311, i.e., perpendicular to the optical axis set by the optical lens 30A. Further, since the protective layer 312A is a preform, there is no fear of a problem such as an adhesive overflow, as compared with example 1.

In addition, in this example, the anchor surface 314A of the protection layer 312A has a height higher than that of the matte layer 316, and when a foreign object touches the optical lens 30A, the protection layer 312A can protect the matte layer 316 from being touched and worn because the protection layer 312A can increase the height of the lens end surface of the optical lens 30A. That is, the protective layer 312A disposed on the top surface 310 of the lens barrel body 311 raises the difficulty of the matte layer 316 being touched, thereby functioning to protect the matte layer 316.

Also, in this example, at least a portion of the visible light can be reflected by the protective layer 312A, that is, when the external light is irradiated on the upper end face 300 of the optical lens 30A, the protective layer 312A on the upper end face 300 of the optical lens 30A can reflect at least a portion of the visible light, so that the upper end face 300 of the optical lens 30A has a certain color matching in appearance, and the optical lens 30A has a stronger aesthetic effect and decorative effect.

Specifically, in this example, the protective layer 312A may reflect at least one wavelength of visible light or reflect at least two different wavelengths of visible light simultaneously. It will be appreciated by those of ordinary skill in the art that for human eye resolution, violet has a wavelength of 400nm to 450nm, blue has a wavelength of 450nm to 480nm, green has a wavelength of 500nm to 560nm, yellow has a wavelength of 580nm to 600nm, orange has a wavelength of 600nm to 650nm, and red has a wavelength of 650nm to 760 nm. Here, the different wavelengths do not indicate the waves having different wavelength values, but the wavelengths of two different colors.

In view of the reflectivity, in this example, the reflectivity of the protective layer 312A exceeds or is equal to 1.1%, for example, the reflectivity of the protective layer 312A is 1.1% to 1.2%. Of course, in other examples of the present application, the protection layer 312A may have a larger reflectivity, for example, the reflectivity of the protection layer 312A exceeds 2.5%, which is not limited by the present application.

In particular, in this example, the reflective properties of the protective layer 312A are determined by the material configuration of the adhesive. Specifically, in this example, the protective layer 312A is formed by curing an adhesive, wherein the adhesive includes an adhesive body and a pigment mixed in the adhesive body, so that the protective layer 312A can reflect at least part of the wavelength of the visible light through the pigment.

The pigment is selected from one or a combination of more of phthalocyanine red, carbon black powder, titanium dioxide, phthalocyanine blue, diaryl ether and phthalocyanine green, wherein the phthalocyanine red corresponds to red, the carbon black powder corresponds to black, the titanium dioxide corresponds to white, the phthalocyanine blue corresponds to blue, the diaryl ether corresponds to yellow and the phthalocyanine green corresponds to green. Preferably, the pigment is homogeneously mixed with the adhesive body, i.e. the pigment is homogeneously embedded in the adhesive body. It is worth mentioning that the pigment mixed into the adhesive body can reduce the corrosion of the adhesive body to the lens barrel body 311, and the pigment can also optimize the flow property of the adhesive body so that the adhesive can fill the groove 3110 relatively more perfectly so that the upper surface 313A of the adhesive is a flat surface.

It is worth mentioning that, in this example, the protective layer 312A has an annular structure, and a portion of the optical lens 32 located at the topmost side, which is exposed to the barrel body 311, is entirely and circumferentially enclosed within the protective layer 312A. From the visual appearance, it can be clearly seen that the optical lens 32 exposed to the opening and a ring of color layers surrounding the optical lens 32 are provided on the upper end surface 300 of the optical lens 30A to form a visual effect similar to "smart eye".

In addition, in this example, the lens barrel body 311 further has an inclined surface extending obliquely and inwardly from the top surface 310 to the optical lens 32 located at the topmost side, and the lens barrel structure 31 further includes a matte layer 316 provided on the inclined surface, wherein the thickness of the matte layer 316 is less than or equal to 1um, and the reflectance of the matte layer 316 is less than 0.8%. That is, in this example, the optical lens 30A is provided with a matte layer 316 at a position inside the upper end surface 300 thereof near the optical lens 30A located at the topmost side, so that light rays emitted from the lens surface near the optical axis are reduced by the matte layer 316, the influence of stray light is reduced, and the imaging quality is improved.

Fig. 18 illustrates a schematic diagram of a further variant implementation of an optical lens 30A according to an embodiment of the present application.

As shown in fig. 18, in this example, the top surface 310 of the lens barrel body 311 is configured as an inclined surface that is inclined downward from near the optical axis to far from the optical axis (that is, the height of the inclined surface near the optical axis is higher than the height thereof far from the optical axis), wherein the protective layer 312A is superimposed on the inclined surface.

It should be noted that in this example, the lens barrel body 311 is not provided with the notch 3110 because the notch 3110 is designed in consideration of the thickness of the lens barrel body 311, particularly, the thickness of the lens barrel body 311 at the lens end face, and therefore, when the lens end face thickness is too low to open the notch 3110, the adhesive can be also laid out by providing the inclined face to form the protective layer 312A, so as to solve the technical problem.

In particular, in this example, the cross section of the protective layer 312A has a triangular shape or a trapezoidal shape such that the upper surface 313A of the protective layer 312A (i.e., the anchor surface 314A) is perpendicular to the optical axis when the protective layer 312A is attached to the inclined surface. That is, in this example, the height of the protective layer 312A at the optical axis position set close to the optical lens 30A is lower than the height of the protective layer 312A at the optical axis position set distant from the optical lens 30A, and by such a shape configuration, the height difference caused by the inclined surface is compensated, so that, after the protective layer 312A is attached to the inclined surface, the upper surface 313A of the protective layer 312A (i.e., the anchor surface 314A) remains perpendicular to the optical axis, facilitating the assembly of the optical lens 30A. Preferably, in this example, the lower surface of the protection layer 312A is adapted to the shape and size of the inclined surface.

Fig. 19 illustrates a schematic diagram of yet another variant implementation of the optical lens 30A according to an embodiment of the present application. As shown in fig. 19, in this example, the lens barrel body 311 does not include the groove 3110 concavely formed on the top surface 310 thereof, and the protective layer 312A is formed directly on the top surface 310 of the lens barrel body 311 in an overlapping manner. It should be noted that, similarly to the modified implementation illustrated in fig. 17, in this example, the anchor surface 314A of the protective layer 312A forms a part of the lens end surface of the optical lens 30A and the anchor surface 314A serves as a force-bearing surface during assembly of the optical lens 30A.

In order to expand the stress surface of the optical lens 30A during the assembly process, i.e., expand the anchor surface 314A of the protection layer 312A, in the embodiment of the present application, the outer edge of the protection layer 312A protrudes from the outer edge of the lens barrel body 311, so that the anchor surface 314A of the protection layer 312A protrudes from the outer edge of the lens barrel body. That is, in this example, the size of the anchor face 314A of the protective layer 312A is larger than the size of the top surface 310 of the lens barrel body 311.

Note that the reason why the anchor surface 314A of the protective layer 312A illustrated in fig. 19 can protrude from the outer edge of the lens barrel body 311 is that: the protective layer 312A is a preform, and therefore, its dimensional processing is not limited by the lens barrel body 311.

Fig. 20 illustrates a schematic diagram of a further variant implementation of the optical lens 30A according to an embodiment of the present application. As shown in fig. 20, in this example, the protective layer 312A is formed directly on the top surface 310 of the lens barrel body 311 in an overlapping manner, that is, the adhesive is directly disposed on the top surface 310 of the lens barrel body 311. Also, the anchor surface 314A of the protective layer 312A forms a lens end surface of the optical lens 30A and the anchor surface 314A serves as a force-bearing surface during assembly of the optical lens 30A.

In particular, in this example, the protective layer 312A is in a circular arc shape on both sides thereof to increase the viewing angle of the camera module. That is, the protection layer 312A adopts arc transition at both end sides of the anchor surface 314A thereof to increase the reflection angle, thereby increasing the viewing angle of the camera module. Here, in this example, the reflection angle of the camera module at the lens end surface thereof can be increased to 45 ° to 60 ° by the circular arc transition design.

Fig. 21 illustrates a schematic diagram of yet another variant implementation of the optical lens 30A according to another embodiment of the present application. As shown in fig. 21, in this example, the protective layer 312A is capable of reflecting a plurality of different wavelengths of light in visible light.

Specifically, as shown in fig. 21, in this example, the protective layer 312A includes a plurality of ring units 3120A nested inside and outside, wherein the plurality of ring units 3120A are nested inside and outside to form the protective layer 312A having a ring structure, wherein wavelengths of light that can be reflected by at least two ring units 3120A of the plurality of ring units 3120A are different, in such a manner that the protective layer 312A can reflect light of a plurality of different wavelengths of visible light. For example, in a specific example, the protection layer 312A includes 7 ring units 3120A nested inside and outside, wherein the ring units 3120A are respectively capable of reflecting: red, orange, yellow, green, cyan, blue, violet, so that the protective layer 312A provides the lens surface of the optical lens 30A with a rainbow ring from the perspective of external visual effects.

Fig. 22 illustrates a schematic diagram of yet another variant implementation of the optical lens 30A according to another embodiment of the present application. As shown in fig. 21, in this example, the protective layer 312A is capable of reflecting a plurality of different wavelengths of light in visible light.

Specifically, as shown in fig. 21, in this example, the protective layer 312A includes a plurality of fan-shaped units 3120B that are connected side-by-side to each other, and the plurality of fan-shaped units 3120B are connected side-by-side to each other to form the protective layer 312A having a ring-shaped structure, wherein wavelengths of light that can be reflected by at least two fan-shaped units 3120B among the plurality of fan-shaped units 3120B are different, in such a manner that the protective layer 312A can reflect light of a plurality of different wavelengths in visible light. For example, in a specific example, the protective layer 312A includes 7 fan-shaped units 3120B connected side-by-side with each other, wherein the ring-shaped units 3120A are respectively capable of reflecting: red, orange, yellow, green, cyan, blue, violet, so that the protective layer 312A provides the lens surface of the optical lens 30A with a rainbow ring zone in view of external visual effects.

Fig. 23 illustrates a schematic diagram of a further variant implementation of the optical lens 30A according to an embodiment of the present application. As shown in fig. 23, in this example, at least two protective layers 312A are disposed on the top surface 310 of the lens barrel body 311, that is, the lens barrel structure 31 includes at least two protective layers 312A formed on the lens end surface of the optical lens 30A.

More specifically, in this example, it is exemplified that the lens barrel structure 31 includes two of the protective layers 312A, and the two protective layers 312A are defined as: a first protective layer 3121 and a second protective layer 3122. As shown in fig. 23, in this example, the second protective layer 3122 is located on the outer side of the first protective layer 3121, and the height of the second protective layer 3122 is higher than the height of the first protective layer 3121, with such a configuration that, when the camera module is assembled to an electronic apparatus, the second protective layer 3122 located on the outer side and having a higher height can interfere with a cover plate of the electronic apparatus to reduce chipping of the lens barrel body 311 due to impact at the time of a reliability test. That is, the second protection layer 3122 located at the outer side and having a higher height can function as a buffer layer to reduce the risk of damage of the optical lens 30A due to impact.

Also, in this example, the first protection layer 3121 and the second protection layer 3122 are capable of reflecting light of different wavelengths of visible light, respectively, that is, having a multi-layer ring effect of different color matching on the lens end surface of the optical lens 30A in view of visual effect, to further enhance the aesthetic effect and decorative performance of the optical lens 30A. Of course, the first protection layer 3121 and the second protection layer 3122 may also reflect light of the same wavelength, and this is not a limitation of the present application.

Example 3

Fig. 25 illustrates a schematic diagram of an optical lens according to another embodiment of the present application. As shown in fig. 15, the optical lens 30B according to another embodiment of the present application includes: a lens barrel structure 31 and at least one optical lens 32 installed in the lens barrel structure 31. The lens barrel structure 31 includes a barrel body 311 having a top surface 310, the barrel body 311 having a mounting cavity formed therein and an opening formed in an upper region thereof and communicating with the mounting cavity, wherein the at least one optical lens 32 is mounted in the barrel body 311 and the optical lens 32 located at the topmost side is exposed to the opening.

As described above, in order to increase the strength of the lens barrel body 311, glass fibers or mineral fibers are generally mixed into an injection molding material (for example, a plastic polymer material) when the lens barrel body 311 is injection molded, and since these fibers are not melted with the injection molding material, the lens barrel body 311 forms fibrous small particles or a small cluster structure after the lens barrel body 311 is molded. If the structure of the barrel body 311 is not optimized, it is particularly easy for the upper end surface 300 of the optical lens 30B to be chipped and dirty when it comes into contact with and rubs against other components. As will be appreciated by those skilled in the art, the upper end surface 300 of the optical lens 30B is generally used as a stressed surface for grasping the optical lens 30B by various jigs, that is, the upper end surface 300 of the optical lens 30B is a surface in contact with various jigs, and due to the low material strength of the injection molding material, the upper end surface 300 of the lens barrel body 311 is prone to scratch and/or generate dirt when being matched with the jigs.

In order to solve the above technical problem, in the embodiment of the present application, the lens barrel structure 31 further includes at least one protection layer 312B formed on the top surface 310 of the lens barrel body 311, the protection layer 312B has a relatively high surface hardness, and specifically, a first hardness of an upper surface 313B of the protection layer 312B is greater than a second hardness of the top surface 310 of the lens barrel body 311. Also, an upper surface 313B of the at least one protective layer 312B provides at least one anchor surface 314B for being attached during assembly, the at least one anchor surface 314B having a first hardness greater than a second hardness of the top surface 310 of the barrel body 311.

In particular, in the embodiment of the present application, the protective layer 312B is integrally bonded to the top surface 310 of the lens barrel body 311 through an integral molding process, for example, integrally formed on the top surface 310 of the lens barrel body 311 through a molding process or an injection molding process. Here, the upper surface 313B of the protective layer 312B (i.e., the anchor surface 314B) forms a lens end surface of the optical lens 30B, i.e., the anchor surface 314B replaces the top surface 310 of the barrel body 311 as a force-receiving surface during assembly of the optical lens 30B.

More specifically, in the present embodiment, if the hardness is tested by the pencil method, the first hardness of the anchor 314B ranges from 4H to 5H, and, as described above, the second hardness of the top surface 310 of the barrel body 311 ranges from B to 2H, that is, in the present embodiment, the first hardness of the anchor 314B is a multiple (2 times or more) of the first hardness of the top surface 310 of the barrel body 311. In the embodiment of the present application, the roughness Ra of the anchor surface 314B is less than or equal to 0.56 um.

It should be noted that, because the anchor surface 314B has a higher hardness, it is not easy to wear when used in cooperation with the jig, so the protective layer 312B can be directly used to provide a bearing surface or an absorption surface contacting with the jig. Accordingly, the shoulder size of the lens barrel body 311 according to the embodiment of the present application may be reduced by 200um to 500um, that is, the optical lens 30B may have a relatively more compact size, where the shoulder size of the lens body identifies the shoulder of the optical lens 30B for adhering a protective film. Specifically, in the present embodiment, the maximum outer diameter of the shoulder dimension of the barrel body 311 of the optical lens 30B is 7.5mm or less due to the configuration of the protective layer 312B.

Further, in the embodiment of the present application, the protection layer 312B can also reflect at least a part of the wavelength of the visible light, that is, when the external light irradiates the lens end surface of the optical lens 30B, the protection layer 312B formed on the lens end surface of the optical lens 30B can reflect at least a part of the wavelength of the visible light, so that the upper end surface 300 of the optical lens 30B has a certain color matching in appearance, and the optical lens 30B has a stronger aesthetic effect and a decorative effect.

Specifically, in the embodiment of the present application, the protection layer 312B may reflect at least one wavelength of visible light or reflect at least two different wavelengths of visible light at the same time. It will be appreciated by those of ordinary skill in the art that for human eye resolution, violet has a wavelength of 400nm to 450nm, blue has a wavelength of 450nm to 480nm, green has a wavelength of 500nm to 560nm, yellow has a wavelength of 580nm to 600nm, orange has a wavelength of 600nm to 650nm, and red has a wavelength of 650nm to 760 nm. Here, the different wavelengths do not indicate the waves having different wavelength values, but the wavelengths of two different colors.

In terms of reflectivity, in the embodiment of the present application, the reflectivity of the protection layer 312B exceeds or is equal to 1.1%, for example, the reflectivity of the protection layer 312B is 1.1% to 1.2%. Of course, in other examples of the present application, the protection layer 312B may have a larger reflectivity, for example, the reflectivity of the protection layer 312B exceeds 2.5%, which is not limited by the present application.

In particular, in the embodiment of the present application, the reflective performance of the protective layer 312B is determined by the material of which the protective layer 312B is made, that is, the color scheme of the optical lens 30B at the lens end surface thereof is determined by the material of which the protective layer 312B is made.

As described above, in the embodiment of the present application, the protective layer 312B is integrally formed on the top surface 310 of the lens barrel body 311 by a molding process or an injection molding process from a molding material or an injection molding material. Accordingly, in the embodiment of the present application, the protective layer 312B can have the reflective property as described above only by adding a pigment to the molding material or the injection molding material. The pigment is selected from one or a combination of more of phthalocyanine red, carbon black powder, titanium dioxide, phthalocyanine blue, diaryl ether and phthalocyanine green, wherein the phthalocyanine red corresponds to red, the carbon black powder corresponds to black, the titanium dioxide corresponds to white, the phthalocyanine blue corresponds to blue, the diaryl ether corresponds to yellow and the phthalocyanine green corresponds to green. Preferably, the pigment is homogeneously mixed with the molding material or injection molding material, i.e. the pigment is homogeneously embedded in the molding material or injection molding material. Preferably, from the viewpoint of aesthetic effect, the pigment can be selected from the group consisting of phthalocyanine red and titanium dioxide in a mass part ratio of 4:1, which can be matched to a pale pink color. Or the pigment can be selected from phthalocyanine blue and titanium dioxide with the mass portion ratio of 1:1, and blue can be matched.

As shown in fig. 25, in the present embodiment, the protective layer 312B has an annular structure, and the portion of the optical lens 32 located at the topmost side, which is exposed to the lens barrel main body 311, is completely and circumferentially enclosed in the protective layer 312B. From the visual appearance, the optical lens 32 exposed to the opening and a color layer surrounding the optical lens 32 are clearly seen on the lens end surface of the optical lens 30B to form a visual effect similar to "smart eye".

In addition, as shown in fig. 25, in the embodiment of the present application, the lens barrel body 311 further has an inclined surface extending obliquely and inwardly from the top surface 310 to the optical lens 32 located at the topmost side, and the lens barrel structure 31 further includes a matte layer 316 disposed on the inclined surface, wherein the thickness of the matte layer 316 is less than or equal to 1um, and the reflectivity of the matte layer 316 is less than 0.8%. That is, in the embodiment of the present application, the optical lens 30B is provided with the matte layer 316 at a position close to the optical lens 30B located at the topmost side inside the upper end surface 300 thereof, so that light rays emitted from the lens surface close to the optical axis accessory are reduced by the matte layer 316, the influence of stray light is reduced, and the imaging quality is improved.

As described above, with the optical lens 30B, most of stray light comes from light reflected by a portion of the lens surface near the optical axis, that is, with respect to the lens surface (particularly with respect to the lens end face), it is not necessary to set all the surface portions to a dark color, that is, it is not necessary to set the entire lens end face to a dark color. Accordingly, in the embodiment of the present application, the protective layer 312B is disposed on the lens surface far from the optical axis, and the matte layer 316 is disposed on the lens surface close to the optical axis, so as to effectively prevent the influence of stray light, and to have the aesthetic effect of the optical lens 30B.

Preferably, in the embodiment of the present application, as shown in fig. 26, the inclined surface of the lens barrel body 311 and the inner side surface of the protective layer 312B have the same inclination, and the inclined surface of the lens barrel body 311 and the inner side surface of the protective layer 312B form the same inclined surface. Accordingly, the inner side surface of the protection layer 312B is further covered by the matte layer 316, so that the entire inner side surface close to the optical axis is covered by the matte layer 316, thereby improving the effect of preventing stray light.

In summary, the image pickup module and the optical lens 30B thereof according to the embodiment of the present application are clarified by disposing a protection layer 312B on the lens end surface of the optical lens 30B, the protection layer 312B provides an anchor surface 314B serving as a stress surface during the assembly process of the optical lens 30B, and the hardness of the anchor surface 314B has a relatively high hardness and a relatively good roughness, so as to prevent the lens end surface of the optical lens 30B from being scratched and reduce the generation of dirt through the anchor surface 314B. Moreover, the protective layer 312B can reflect at least part of the visible light with wavelengths, so that the color scheme of the lens surface of the optical lens 30B can be changed through the protective layer 312B, so that the aesthetic effects of the optical lens 30B and the camera module can be enhanced and diversified, and a larger design space can be provided for beautifying the overall appearance of the electronic device.

Accordingly, the process for manufacturing the optical lens 30B according to the embodiment of the present application includes the following steps.

Firstly, providing a lens barrel body 311, wherein the lens barrel body 311 is provided with a top surface 310;

then, at least one optical lens 32 is mounted in the barrel body 311;

then, the protective layer 312B is integrally formed on the top surface 310 of the lens barrel body 311 by a molding process or an injection molding process, wherein the protective layer 312B is made of a molding material or a mixed material of an injection molding material and a pigment.

The protection layer 312B may be preformed by curing the adhesive, or the protection layer 312B may be preformed by curing the mixture of the molding material and the pigment, which is not limited in this application. An upper surface 313B of the protective layer 312B provides an anchor surface 314B for attachment during assembly, the anchor surface 314B having a first hardness greater than a second hardness of the top surface 310 of the barrel body 311.

Further, the preparation method further comprises the following steps: a matte layer 316 is formed on the inclined surface.

It should be understood that, during the assembly process, the upper surface 313B of the protection layer 312B provides an anchor surface 314B as a stress surface, wherein the suction jig is sucked onto the anchor surface 314B instead of the top surface 310 of the lens barrel body 311, and the anchor surface 314B is not easily scratched or contaminated during the assembly process because the anchor surface 314B has relatively high hardness and relatively excellent roughness. That is, the upper end surface 300 of the optical lens 30B has relatively high integrity and cleanliness after the assembly is completed.

Moreover, in the embodiment of the present application, the protection layer 312B can reflect at least part of the wavelengths of the visible light, that is, when the external light irradiates the lens end surface of the optical lens 30B, the protection layer 312B on the lens end surface of the optical lens 30B can reflect at least part of the wavelengths of the visible light, so that the lens end surface of the optical lens 30B has a certain color matching in appearance, and the optical lens 30B has a stronger aesthetic effect and a stronger decorative effect. In particular, since the protective layer 312B has an annular structure, the protective layer 312B causes the optical lens 30B to have a certain (or several) color-matching annular zone in appearance.

Example 4

Fig. 27 illustrates a schematic diagram of an optical lens according to still another embodiment of the present application. In the embodiment of the present application, the mechanism of the protective layer 312C to achieve the reflective performance is adjusted compared to the optical lens 30C illustrated in embodiments 1 to 3.

Specifically, as shown in fig. 27, in this example, the protective layer 312C further includes a color film 315C formed on the upper surface 313C, where the color film 315C is capable of reflecting at least part of wavelengths of visible light, so that the optical lens 30C has a color ring on a lens end surface thereof in terms of external visual effect.

That is, compared to the optical lens 30C illustrated in fig. 3 to 26, in the embodiment of the present application, the reflective performance of the protection layer 312C is realized by the color film 315C disposed on the surface thereof, rather than being determined by the material of which the protection layer 312C is made.

In particular, since the color film 315C is not too tall or is otherwise easily scratched, a transparent additional protective structure may be applied to the color film 315C. Moreover, since the color of the color film 315C is generally realized by metal atoms, the color film 315C is preferably formed on the protective layer 312C by an electroplating process.

It should be noted that, in the embodiment of the present application, the color film 315C formed on the outer surface of the protection layer 312C should be performed as soon as possible in the final step of the assembly process of the optical lens 30C, because the upper surface (i.e., the anchor surface) of the protection layer 312C is used as a stressed surface in the assembly process of the optical lens 30C, and therefore, if the color film 315C is plated on the upper surface 313C of the protection layer 312C early, the color film 315C is easily scratched or abraded in the assembly process.

Preferably, in this embodiment of the application, the color film 315C is performed in a last step of an assembly process of the optical lens 30C, that is, after the color film 315C is plated, a preparation and assembly process of the optical lens 30C is completed.

Example 5

It should be noted that in the optical lens illustrated in fig. 3 to 27, the optical lens is implemented as an integral optical lens, and it should be understood that in other embodiments of the present application, the optical lens may also be implemented as a split optical lens.

Fig. 28 illustrates a schematic diagram of an optical lens according to yet another embodiment of the present application. As shown in fig. 28, the optical lens 30D according to still another embodiment of the present application includes: the lens barrel structure 21 includes a barrel body 311 having a top surface 310, and a barrel structure 31 and at least one optical lens 32 mounted in the barrel structure 31, wherein the at least one optical lens 32 is mounted in the barrel body 311. In particular, in the embodiment of the present application, the optical lens 30D has a split structure, wherein the barrel body 311 includes a first barrel unit 318 and a second barrel unit 319, wherein the optical lens 32 of the at least one optical lens 32 is mounted to the first barrel unit 318 to form a first lens unit, and the other optical lenses 32 of the at least one optical lens 32 are mounted to the second barrel unit 319 to form a second lens unit, and the first lens unit is assembled to the second lens unit by an adhesive. That is, in this example, the top surface of the first barrel unit 318 forms the top surface 310 of the barrel body 311.

As described above, in order to increase the strength of the lens barrel body 311, glass fibers or mineral fibers are generally mixed into an injection molding material (for example, a plastic polymer material) when the lens barrel body 311 is injection molded, and since these fibers are not melted with the injection molding material, the lens barrel body 311 forms fibrous small particles or a small cluster structure after the lens barrel body 311 is molded. If the structure of the barrel body 311 is not optimized, it is particularly easy for the upper end surface 300 of the optical lens 30D to be chipped and to cause lens contamination when it comes into contact with and rubs against other parts during the assembly of the camera module. As will be appreciated by those skilled in the art, the upper end surface 300 of the optical lens 30D is generally used as a stress surface for various jigs to grasp the optical lens 30D, that is, the upper end surface 300 of the optical lens 30D is a surface in contact with various jigs, and due to the low material strength of the injection molding material, the lens end surface of the optical lens 30D is prone to scratch and/or dirt when being matched with the jigs.

In order to solve the above technical problem, in the embodiment of the present application, the lens barrel structure 31 further includes at least one protection layer 312D formed on the top surface 310 of the lens barrel body 311, the protection layer 312D has a relatively high surface hardness, and specifically, a first hardness of an upper surface 313D of the protection layer 312D is greater than a second hardness of the top surface 310 of the lens barrel body 311. Accordingly, the upper surface 313D of the at least one protection layer 312D provides at least one anchor surface 314D for being attached during assembly, the first hardness of the at least one anchor surface 314D being greater than the second hardness of the top surface 310 of the barrel body 311.

That is, in the embodiment of the present application, the lens barrel structure 31 further includes at least one protection layer 312D formed on the upper end surface 300 of the optical lens 30D, wherein the at least one protection layer 312D has a relatively high surface hardness, and the upper surface 313D of the protection layer 312D provides an anchor surface 314D for replacing the upper end surface 300 of the optical lens 30D as a stressed surface during the assembly process, in such a way that the optical lens 30D is prevented from generating scratches and/or dirt on the upper end surface 300 thereof during the assembly process. Of course, it should be understood that the protective layer 312D has a relatively high surface hardness, so that it can also protect the lens end surface in other situations, for example, during the process of transferring and assembling the camera module to the electronic device, it can also prevent the lens end surface from being scratched and generating dirt

More specifically, in the present embodiment, if the hardness is tested by the pencil method, the first hardness of the anchor face 314D is in the range of 4H to 5H, and, as described above, the second hardness of the top surface 310 of the barrel body 311 is in the range of B to 2H, that is, in the present embodiment, the first hardness of the anchor face 314D is in the range of multiple times (2 times or more) the first hardness of the top surface 310 of the barrel body 311. In the embodiment of the present application, the roughness Ra of the anchor surface 314D is less than or equal to 0.56 um.

It should be noted that, because the anchor surface 314D has a higher hardness, it is not easy to wear when used in cooperation with a jig, so the protection layer 312D can be directly used to provide a bearing surface or an absorption surface contacting with the jig. Accordingly, the shoulder size of the lens barrel body 311 according to the embodiment of the present application may be reduced by 200um to 500um, that is, the optical lens 30D may have a relatively more compact size, where the shoulder size of the lens body identifies the shoulder of the optical lens 30D for adhesion of a protective film. Specifically, in the present embodiment, the maximum outer diameter of the shoulder dimension of the barrel body 311 of the optical lens 30D is 7.5mm or less due to the configuration of the protective layer 312D.

More specifically, in the present embodiment, the protective layer 312D is formed by curing an adhesive applied to the top surface 310 of the lens barrel body 311. That is, the protection layer 312D is cured and molded by an adhesive directly disposed on the top surface 310 of the lens barrel body 311. For example, the adhesive may be disposed on the top surface 310 of the lens barrel body 311 by a glue spraying process, a screen printing process, or the like.

Further, in the embodiment of the present application, the protective layer 312D formed by the adhesive can reflect at least a part of the wavelength of the visible light, that is, when the external light irradiates the upper end face 300 of the optical lens 30D, the protective layer 312D on the upper end face 300 of the optical lens 30D can reflect at least a part of the wavelength of the visible light, so that the upper end face 300 of the optical lens 30D has a certain color matching from the appearance, and the optical lens 30D has a stronger aesthetic effect and a decorative effect.

Specifically, in the embodiment of the present application, the protection layer 312D may reflect at least one wavelength of visible light or reflect at least two different wavelengths of visible light at the same time. It will be appreciated by those of ordinary skill in the art that for human eye resolution, violet has a wavelength of 400nm to 450nm, blue has a wavelength of 450nm to 480nm, green has a wavelength of 500nm to 560nm, yellow has a wavelength of 580nm to 600nm, orange has a wavelength of 600nm to 650nm, and red has a wavelength of 650nm to 760 nm. Here, the different wavelengths do not indicate the waves having different wavelength values, but the wavelengths of two different colors.

In terms of reflectivity, in the embodiment of the present application, the reflectivity of the protection layer 312D exceeds or is equal to 1.1, for example, the reflectivity of the protection layer 312D is 1.1-1.2. Of course, in other examples of the present application, the protection layer 312D may have a larger reflectivity, for example, the reflectivity of the protection layer 312D exceeds 2.5%, which is not limited by the present application.

In particular, in the embodiment of the present application, the reflective performance of the protection layer 312D is determined by the material configuration of the adhesive. Specifically, in the embodiment of the present application, the adhesive includes an adhesive body and a pigment mixed in the adhesive body, so that the protective layer 312D can reflect at least part of the wavelength of the visible light through the pigment.

The pigment is selected from one or a combination of more of phthalocyanine red, carbon black powder, titanium dioxide, phthalocyanine blue, diaryl ether and phthalocyanine green, wherein the phthalocyanine red corresponds to red, the carbon black powder corresponds to black, the titanium dioxide corresponds to white, the phthalocyanine blue corresponds to blue, the diaryl ether corresponds to yellow and the phthalocyanine green corresponds to green. Preferably, the pigment is homogeneously mixed with the adhesive body, i.e. the pigment is homogeneously embedded in the adhesive body.

It should be noted that, in the embodiment of the present application, the protective layer 312D has an annular structure, and the portion of the optical lens 32 located at the topmost side, which is exposed to the lens barrel body 311, is completely and circumferentially wrapped in the protective layer 312D. From the visual appearance, it can be clearly seen that the optical lens 30D has the optical lens 32 exposed to the opening and a ring of color layers surrounding the optical lens 32 on the upper end surface 300 to form a visual effect similar to "smart eye".

Further, as shown in fig. 28, in the present embodiment, the barrel body 311 further has an inclined surface extending obliquely and inwardly from the top surface 310 to the optical lens 32 located at the topmost side, that is, the first barrel unit 318 further has an inclined surface extending obliquely and inwardly from the top surface 310 to the optical lens 32 located at the topmost side. The lens barrel structure 31 further includes a matte layer 316 disposed on the inclined surface, wherein the thickness of the matte layer 316 is less than or equal to 1um, and the reflectivity of the matte layer 316 is less than 0.8%. That is, in the embodiment of the present application, the optical lens 30D is provided with the matte layer 316 at a position close to the optical lens 30D located at the topmost side inside the upper end surface 300 thereof, so that light rays emitted from the lens surface close to the optical axis accessory are reduced by the matte layer 316, the influence of stray light is reduced, and the imaging quality is improved.

Also, in the embodiment of the present application, the first barrel unit 318 and the barrel unit are preferably capable of reflecting different colors, i.e., the first barrel unit 318 and the second barrel unit 319 are presented with different colors, to further increase the diversity of the split type optical lens 30D.

Fig. 29 illustrates a schematic diagram of a modified implementation of the optical lens 30D according to yet another embodiment of the present application. As shown in fig. 29, in this modified embodiment, the first barrel unit 318 is directly adhered to the shoulder of the second barrel unit 319 by an adhesive, and the optical lens 32 positioned at the topmost side and the first barrel unit 318 are not in an adhesive relationship, and this configuration is made in such a manner that an assembly error between the optical lens 32 positioned at the topmost side and the first barrel unit 318 is not superimposed on an overall assembly yield.

Further, in this example, since the first barrel unit 318 does not need to be connected in advance with the optical lens 32 located at the topmost side, the first barrel unit 318 does not need to consider the bonding strength with the optical lens 32 located at the topmost side, and therefore, the first barrel unit 318 can be further thinned. Specifically, the thickness dimension of the first barrel unit 318 can be reduced by more than 100um as shown in fig. 30, as compared to the integrated optical lens scheme described above.

Illustrative electronic device

According to another aspect of the present application, an electronic device is also provided.

Fig. 31 illustrates a perspective view of an electronic device according to an embodiment of the application.

As shown in fig. 31, the electronic apparatus 100 according to the embodiment of the present application includes an electronic apparatus main body 101 and the camera module 10 as described above assembled to the electronic apparatus main body 101. In a specific implementation, the camera module 10 may be disposed on the back of the electronic device main body 101 to form a rear camera module 10, or may be disposed on the front of the electronic device main body 101 to form a front camera module 10.

As described above, in the embodiment of the present application, the optical lens of the camera module 10 can reflect light with a partial wavelength in visible light, that is, as shown in fig. 32, when the camera module 10 is assembled to the electronic apparatus main body 101, the upper end surface 300 of the camera module 10 exposed to the electronic apparatus main body 101 (i.e., the lens end surface of the optical lens) can present a certain color to provide a new design element for the appearance design of the electronic apparatus 100.

Specifically, use the electronic device 100 as an example of a smart phone, wherein, the cover plate 102 of the smart phone can have a certain color, and accordingly, since the

protective layers

312, 312A, 312B,312C, 312D have a reflectivity greater than 2.5%, and the roughness is less than 10um, the reflectivity of the cover plate 102 of the smart phone is greater than 5%, and the roughness is greater than 20um, the cover plate 102 of the smart phone and the

protective layers

312, 312A, 312B,312C, 312D can reflect light with different wavelengths respectively, thereby improving the visual aesthetic feeling of the user.

Preferably, the roughness of the protection layers 312, 312A, 312B,312C, and 312D is smaller than that of the cover plate 102, so that when reflecting light, the light reflected by the protection layers 312, 312A, 312B,312C, and 312D is more concentrated than the light reflected by the cover plate 102, that is, the light reflected by the lens end surface of the camera module 10 is substantially specular reflection, and the light reflected by the cover plate 102 is substantially diffuse reflection, so that the smart phone is more beautiful.

Fig. 33 illustrates another schematic diagram of the electronic device 100 according to an embodiment of the application. As shown in fig. 33, in the electronic apparatus 100, the electronic apparatus 100 includes a plurality of the camera modules 10, wherein the plurality of camera modules 10 may form a plurality of camera modules 10, or may be only a plurality of individual camera modules 10 arranged at the same place.

In one embodiment, each camera module 10 has a

protection layer

312, 312A, 312B,312C, 312D as described above. Taking the electronic device 100 as an example as illustrated in fig. 33, it includes three camera modules 10: a first camera module 10, a second camera module 10 and a third camera module 10.

In a specific example of the present application, the

protective layers

312, 312A, 312B,312C, 312D of the first camera module 10 have a reflectivity greater than 2.5%, a roughness less than 10um, wherein, the roughness and reflectivity of the

protective layers

312, 312A, 312B,312C, 312D of the second camera module 10 are consistent with the parameter configuration of the

protective layers

312, 312A, 312B,312C, 312D of the first camera module 10, the roughness and reflectivity of the

protective layers

312, 312A, 312B,312C, 312D of the third camera module 10 are consistent with the parameter configuration of the

protective layers

312, 312A, 312B,312C, 312D of the first camera module 10 and the second camera module 10, therefore, the first camera module 10, the second camera module 10 and the third camera module 10 can provide the same color scheme, thereby providing a better visual experience for the user.

Of course, in other examples of the present application, the plurality of camera modules 10 may also adopt other different color schemes, for example, the first camera module 10 and the second camera module 10 are the same, and the third camera module 10 is different, which is not limited by the present application.

It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are given by way of example only and are not limiting of the invention. The objects of the invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.

Claims

1. An optical lens, comprising:

a barrel structure including a barrel body having a top surface; and

at least one optical lens mounted in the lens barrel body;

the lens barrel structure further comprises at least one protection layer formed on the top surface of the lens barrel body, wherein the first hardness of the upper surface of the at least one protection layer is larger than the second hardness of the top surface of the lens barrel body, at least one part of the upper surface of the at least one protection layer provides at least one anchor surface used for being attached in an assembling process, and the at least one anchor surface is perpendicular to the set optical axis of the optical lens.

2. The optical lens according to claim 1, wherein the first hardness of the upper surface ranges from 4H to 5H, and the second hardness of the top surface of the barrel body ranges from B to 2H.

3. The optical lens of claim 2, wherein the anchor face is a flat surface.

4. The optical lens of claim 3, wherein the anchor surface has a roughness Ra ≦ 0.56um, where Ra represents the roughness of the anchor surface.

5. The optical lens according to claim 3, wherein the parallelism of the anchor faces is 5um to 20 um.

6. The optical lens according to claim 3, wherein the lens barrel body includes a groove concavely formed on a top surface thereof, and the protective layer is cured by an adhesive applied in the groove.

7. The optical lens as claimed in claim 6, wherein the groove is filled with the adhesive during the formation of the protective layer by the adhesive.

8. The optical lens of claim 7, the groove has a depth of 50um ± 10um and a width of 400um ± 50 um.

9. An optical lens according to claim 11, wherein the adhesive has a viscosity of 4000 cps.

10. The optical lens barrel according to claim 3, wherein the barrel body includes a groove concavely formed in a top surface thereof, the protective layer being fitted in the groove after being premolded, wherein a shape and a size of the protective layer are adapted to a shape and a size of the groove.

11. The optical lens of claim 10 wherein the grooves have a depth of 50um + 10um and a width of 400um + 50 um.

12. The optical lens according to claim 10, wherein an upper surface of the protective layer is a flat surface and the upper surface of the protective layer is flush with a top surface of the barrel body so that an upper end surface of the optical lens is a flat surface.

13. The optical lens according to claim 10, wherein the groove is formed at an edge of a top surface of the barrel body.

14. The optical lens according to claim 3, wherein the protective layer is preformed and directly attached to a top surface of the barrel body, wherein the top surface of the barrel body is a flat surface to form the anchor surface of the flat surface.

15. The optical lens according to claim 14, wherein an upper surface of the protective layer is a flat surface and is parallel to a top surface of the lens barrel body.

16. The optical lens barrel according to claim 15, wherein an outer edge of the protective layer protrudes from an outer edge of the barrel body.

17. The optical lens according to claim 3, wherein the top surface of the barrel body includes an inclined surface extending obliquely downward from an inner side thereof to an outer side thereof, the protective layer being pre-molded and attached to the inclined surface, wherein the protective layer has a shape adapted to the inclined surface such that an upper surface thereof is perpendicular to an optical axis set by the optical lens when the protective layer is attached to the inclined surface.

18. An optical lens according to claim 3, wherein the protective layer is capable of reflecting at least some wavelengths of visible light.

19. An optical lens according to claim 18, wherein the protective layer has a reflectivity of greater than 2.5%.

20. The optical lens of claim 19, wherein the protective layer has a reflectivity ranging from 1.1% to 1.2%.

21. An optical lens according to claim 18, wherein the protective layer is capable of reflecting at least two different wavelengths of visible light.

22. The optical lens according to claim 3, wherein the barrel body further has an inclined surface extending obliquely and inwardly from the top surface to the optical lens located at the topmost side, the barrel structure further including a matte layer provided on the inclined surface.

23. The optical lens barrel according to claim 1, wherein the barrel body includes a first barrel unit and a second barrel unit, wherein the at least one optical lens middle optical lens is mounted to the first barrel unit to form a first lens unit, and the other optical lenses of the at least one optical lens are mounted to the second barrel unit to form a second lens unit, the first lens unit being assembled to the second lens unit.

24. The utility model provides a module of making a video recording which characterized in that includes:

an optical lens according to any one of claims 1 to 23; and

25. An electronic device, comprising:

an electronic device main body; and

be assembled in the module of making a video recording of electronic equipment main part, wherein, the module of making a video recording includes:

an optical lens according to any one of claims 1 to 23; and