CN112540437A

CN112540437A - Split type lens, assembling method thereof and camera module

Info

Publication number: CN112540437A
Application number: CN201910901223.8A
Authority: CN
Inventors: 梅哲文; 裴海鹏; 蒋伟杰
Original assignee: Ningbo Sunny Opotech Co Ltd
Current assignee: Ningbo Sunny Opotech Co Ltd
Priority date: 2019-09-23
Filing date: 2019-09-23
Publication date: 2021-03-23
Anticipated expiration: 2039-09-23
Also published as: CN112540437B

Abstract

The application relates to a split type lens, an assembling method thereof and a camera module. This split type camera lens includes: a first lens portion including a first optical lens and a second lens portion. The second lens portion includes a second barrel and at least one second optical lens. The second lens cone is provided with a bearing part which extends inwards from the top of the second lens cone, and the inner diameter of the bearing part is gradually reduced from bottom to top along the direction of an optical axis. When the at least one second optical lens is mounted on the second lens barrel, the second optical lens positioned at the topmost side is fittingly clamped with the bearing part, so that the upper surface of the second optical lens positioned at the topmost side is completely exposed to the top of the second lens barrel. In this way, the structure of the lens cone skyward of the first lens part and the second lens part is eliminated, so that the adjustment range of the split type lens is larger. And, the split type lens has higher assembly efficiency and precision.

Description

Split type lens, assembling method thereof and camera module

Technical Field

The application relates to the field of optical lenses, in particular to a split type lens, an assembling method thereof and a camera module.

Background

In the optical design of the split-type lens, the assembly precision between the lens parts is particularly critical in order to obtain relatively ideal optical parameters. Fig. 1 illustrates a conventional split type lens. As shown in fig. 1, the split type lens includes two lens portions: the lens barrel comprises a first lens part and a second lens part, wherein the first lens part comprises a first lens barrel and a first optical lens mounted in the first lens barrel, and the second lens part comprises a second lens barrel and at least one second optical lens mounted in the second lens barrel.

For the optical system of the split-type lens, it is desirable that the distance between the first optical lens 11P of the first lens portion 1P and the optical area of the second optical lens 21P located at the topmost side in the second lens portion 2P is relatively determined after the first lens portion is assembled to the second lens portion. However, in an actual production process, the optical lens itself (including the first optical lens 11P and the second optical lens 21P located at the topmost side) is limited by molding accuracy, and there is a limitation in assembly accuracy between the optical lens and the lens barrel, resulting in uncertainty in the distance between the optical zones of the first optical lens 11P and the second optical lens 21P located at the topmost side of the second lens portion 2P. Therefore, in the assembly process of the split type lens, an adjustment gap needs to be reserved between the first lens portion 1P and the second lens portion 2P.

However, in the actual assembly process, the air gap between the light-emitting surface of the first optical lens 11P of the first lens portion 1P and the light-incident surface of the second optical lens 21P located at the topmost side in the second lens portion 2P is relatively small, which affects the adjustable amount of the relative position between the first lens portion 1P and the second lens portion 2P. If the air gap is too small, interference between the first lens portion 1P and the second lens portion 2P may occur during the assembly of the two portions by active alignment.

Also, as shown in fig. 1, in the conventional split type lens, a first lens portion 1P is mounted on an upper surface of a second barrel 22P, that is, a "sky" of the second barrel 22P exists between a first optical lens 11P and a second optical lens 21P adjacent thereto. The existence of the lens cone top surface structure inevitably reduces the adjusting clearance, and influences the adjustment of the split type lens, thereby influencing the lens adjusting quality and the assembling yield.

Further, the "lens barrel zenith" structure has a certain thickness. Therefore, the degree of freedom in designing the second optical lens 21P of the second lens portion 2P is limited on the premise that the adjustment gap is secured as much as possible. In particular, in order to reserve a space for the "tube sky" structure, the structural region of the second optical lens 21P immediately adjacent to the first optical lens 11P needs to be shifted in the lens image side direction. Such a design results in a reduced thickness at the junction between the structured zone and the optical zone of the topmost second optical lens 21P, resulting in increased difficulty in molding the topmost second optical lens 21P. Such a design also causes the manufacturing tolerance of the surface type and the structural region of the imaging surface of the optical region of the second optical lens 21P to become large, so that the imaging quality of the split lens is degraded.

Also, the overall height of the optical system of the split-type lens is within a relatively determined range, and the existence of the "lens barrel zenith" structure is equivalent to heightening the installation base surface of the first lens portion 1P, so that the height of the first lens portion 1P needs to be reduced to meet the overall height requirement of the optical system. That is, the "barrel ceiling" structure limits the height design of the first optical lens 11P extending upward.

In summary, there is a need for an improved optical design for a split lens.

Disclosure of Invention

The present disclosure provides a split-type optical lens, an assembling method thereof, and a camera module, wherein a "lens barrel sky surface" structure is not disposed between a first lens portion and a second lens portion of the split-type optical lens, so as to increase an adjustment range of the split-type optical lens during an assembling process.

Another object of the present invention is to provide a split lens, an assembling method thereof and an image pickup module, wherein the second lens portion includes a second barrel and at least one second optical lens mounted in the second barrel, and an upper surface of the second optical lens at the topmost side is completely exposed to the top of the second barrel, so as to form a structural configuration in which no "barrel crown" is provided in the first lens portion and the second lens portion.

Another object of the present invention is to provide a split lens barrel, an assembling method thereof and a camera module, wherein the second barrel has a bearing portion extending inward from a top of the second barrel, an inner diameter of the bearing portion is tapered from bottom to top along an optical axis direction, and when the at least one second optical lens is mounted to the second barrel, the second optical lens located at a top side is fittingly engaged with the bearing portion, so that an upper surface of the second optical lens at the top side is completely exposed to the top of the second barrel.

Another object of the present invention is to provide a split type lens, an assembling method thereof, and an image pickup module, in which a degree of freedom in design of a structural region of a first optical lens of the first lens portion and a second optical lens of a top-most side of the second lens portion is improved since the "lens barrel zenith" structure is not provided. Specifically, the thickness dimension of the structural region of the first optical lens and the second optical lens at the topmost side can be increased, and the second optical lens at the topmost side having such a design is more easily demolded.

Another object of the present invention is to provide a split type lens, an assembling method thereof and a camera module, wherein a "lens barrel sky surface" structure is not disposed between a first lens portion and a second lens portion thereof, so that a height difference between an optical area and a structural area of a first optical lens of the first lens portion can be designed to be larger, and when the optical lens is assembled in a through hole of a display screen of a terminal device, the optical area of the first optical lens can be closer to a top of the through hole, so as to obtain a larger field angle and a larger light transmission amount, thereby ensuring that the camera module has higher imaging quality.

Another objective of the present application is to provide a split lens, an assembling method thereof and a camera module, wherein the first optical transparent portion of the first lens portion includes an optical area and a structural area surrounding the optical area, the optical area includes a protrusion protruding from the structural area, and when the optical lens is assembled in a terminal device, the protrusion of the first optical lens is embedded in a through hole of a display screen of the terminal device, so that the optical area of the first optical lens can be adjacent to a top of the through hole to obtain a larger field angle and a larger light transmission amount, thereby ensuring that the camera module has higher imaging quality.

Another object of the present application is to provide a split lens, an assembling method thereof and a camera module, wherein the protruding portion of the first optical lens has a relatively small lateral dimension, so that an opening of a relatively small-sized display screen is required, thereby improving a "screen occupation ratio" of a terminal device.

Another object of the present invention is to provide a split-type lens, an assembling method thereof and a camera module, wherein the first lens portion is assembled to the second lens portion by active calibration, so as to improve the optical performance and the assembling precision and efficiency of the split-type lens.

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 a split type lens including:

a first lens portion including a first optical lens;

the second lens part comprises a second lens barrel and at least one second optical lens mounted on the second lens barrel, the second lens barrel is provided with a bearing part extending inwards from the top of the second lens barrel, the inner diameter of the bearing part is gradually reduced from bottom to top along the optical axis direction, and when the at least one second optical lens is mounted on the second lens barrel, the second optical lens positioned at the topmost side is fittingly clamped with the bearing part, so that the upper surface of the second optical lens at the topmost side is completely exposed at the top of the second lens barrel;

wherein the first lens portion and the second lens portion have an adjustment gap therebetween, and the first lens portion is attached to the second lens portion by an adhesive.

In the split-type lens according to the application, the inner side surface of the bearing part forms a bearing surface for clamping the second optical lens at the topmost side, and when the second optical lens at the topmost side is fittingly clamped in the bearing part, the outer side surface of the second optical lens at the topmost side is tightly matched with the bearing surface of the bearing part.

In the split type lens according to the application, the inner side surface of the bearing part is an inclined surface, and the outer side surface of the second optical lens at the top side is an inclined surface matched with the inner side surface of the bearing part.

In split type camera lens according to the application, the medial surface of bearing the weight of the portion includes first inclined plane, second inclined plane and extends the transition face between first inclined plane and second inclined plane, the top side the lateral surface of second optical lens include with the first inclined plane of the medial surface adaptation of bearing the weight of the portion, second inclined plane and extend the transition face between first inclined plane and second inclined plane.

In the split type lens according to the present application, the first inclined surface and the second inclined surface in the inner side surface of the bearing part are parallel to each other, and the first inclined surface and the second inclined surface in the outer side surface of the second optical lens at the topmost side are parallel to each other.

In a split type lens according to the present application, a fitting clearance between an outer side surface of the second optical lens at the topmost side and the bearing surface of the bearing part is: -10 to 10 microns.

In a split type lens according to the present application, a fitting clearance between an outer side surface of the second optical lens at the topmost side and the bearing surface of the bearing part is: -2 to 8 microns.

In the split type lens according to the present application, the thickness of the bearing part is not less than 0.15 mm.

In the split type lens according to the present application, the included angle range between the inner side surface of the bearing portion and the optical axis, and the included angle range between the outer side surface of the second optical lens and the optical axis, which is the topmost side, is 1 ° to 80 °.

In the split type lens according to the present application, when the second optical lens located at the topmost side is fittingly engaged with the bearing part, an upper surface of the structural region of the second optical lens located at the topmost side is flush with an upper surface of the bearing part.

In the split type lens according to the present application, when the second optical lens located at the topmost side is fittingly engaged with the bearing part, an upper surface of the structural region of the second optical lens located at the topmost side is lower than an upper surface of the bearing part.

In the split type lens according to the present application, when the second optical lens located at the topmost side is fittingly engaged with the bearing part, the upper surface of the structural region of the second optical lens at the topmost side protrudes from the upper surface of the bearing part.

In the split type lens according to the present application, when the second optical lens located at the topmost side is fittingly engaged with the bearing part, the lower surface of the structural region of the second optical lens located at the topmost side is flush with the lower surface of the bearing part.

In the split type lens according to the present application, when the second optical lens located at the topmost side is fittingly engaged with the bearing part, the lower surface of the structural region of the second optical lens located at the topmost side is lower than the lower surface of the bearing part.

In the split type lens according to the present application, when the second optical lens located at the topmost side is fittingly engaged with the bearing part, the lower surface of the structural region of the second optical lens at the topmost side protrudes from the lower surface of the bearing part.

In the split type lens according to the present application, an upper surface of the structure region of the second optical lens adjacent to the second optical lens at the topmost side is a flat surface to be fittingly abutted against a lower surface of the structure region of the second optical lens at the topmost side.

In the split type lens according to the present application, the second optical lens adjacent to the second optical lens at the topmost side has a protrusion protrudingly formed on an upper surface of a structure region thereof, and when the second optical lens adjacent to the second optical lens at the topmost side is mounted to the second barrel, an upper surface of the protrusion abuts against a lower surface of the structure region of the second optical lens at the topmost side.

In the split type lens according to the present application, the second optical lens adjacent to the second optical lens at the topmost side has a recess concavely formed on an upper surface of a structure region thereof, and when the second optical lens adjacent to the second optical lens at the topmost side is mounted to the second barrel, an inner surface of the recess abuts against a lower surface of the structure region of the second optical lens at the topmost side.

In the split type lens according to the present application, a lower surface of the structure region of the first optical lens is a flat surface.

In the split type lens according to the present application, the first optical lens has a convex portion protrudingly formed on a lower surface of a structural region thereof, the convex portion corresponding to an upper surface of a structural region of the second optical lens on the topmost side.

In the split type lens according to the present application, the at least one second optical lens is mounted in the second barrel from a bottom of the second barrel in a flip-chip manner.

In the split type lens according to the present application, at least a part of the second optical lenses of the at least one second optical lens are fitted to each other.

In the split type lens according to the present application, a light shielding layer is provided on the non-optical region of the second optical lens located at the topmost side.

In the split type lens according to the present application, a lateral dimension of the projection portion is not more than 2 mm.

In the split type lens according to the present application, an angle between a side wall of the boss portion and an optical axis set by the split type lens is less than 15 °.

In a split type lens according to the present application, the first optical lens is a glass lens.

In the split type lens according to the present application, the glass lens has a refractive index abbe number of 50 to 71.

In the split type lens according to the present application, the refractive index of the glass lens is 1.48 to 1.55.

In a split type lens according to the present application, the first optical lens is bonded to a structure region of the second optical lens located at the topmost side by an adhesive.

In a split type lens according to the present application, the first lens portion further includes a first barrel for mounting the first optical lens, and the adhesive is applied between the first barrel and the second barrel and/or between the first barrel and a structural region of the second optical lens located at the topmost side and/or between the first optical lens and a structural region of the second optical lens located at the topmost side.

According to another aspect of the present application, the present application further provides a camera module, which includes:

the split lens as described above; and

the split type lens is kept on a photosensitive path of the photosensitive assembly.

In the camera module according to the application, the camera module further comprises a driving element, wherein the driving element is installed on the photosensitive assembly, and the optical lens is installed on the driving element.

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

providing a second lens barrel, at least one second optical lens and a first lens part comprising the first optical lens, wherein the second lens barrel is provided with a bearing part which extends inwards from the top of the second lens barrel, and the inner diameter of the bearing part is gradually reduced from bottom to top along the direction of an optical axis;

mounting the at least one second optical lens to the second bearing part from the bottom of the second lens barrel from bottom to top in a flip-chip manner, wherein the second optical lens positioned at the topmost side is fittingly engaged with the bearing part, so that the upper surface of the second optical lens positioned at the topmost side is completely exposed to the top of the second lens barrel;

pre-positioning the first lens part, the second lens part and the photosensitive component along the optical axis direction;

adjusting a relative positional relationship between the first lens portion and the second lens portion in an active calibration manner; and

and fixedly arranging the first lens part on the second lens part to form the split type 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 structural schematic view of a conventional split type lens.

Fig. 2 illustrates a schematic diagram of a split type lens according to an embodiment of the present application.

Fig. 3A illustrates a partial schematic view of a modified implementation of the split lens according to an embodiment of the present application.

Fig. 3B illustrates a partial schematic view of another implementation variation of the split lens according to an embodiment of the present application.

Fig. 3C is a partial schematic view illustrating still another implementation variation of the split lens according to an embodiment of the present application.

Fig. 4 is a partial schematic view illustrating still another implementation variation of the split lens according to an embodiment of the present application.

Fig. 5 is a partial schematic view illustrating still another implementation variation of the split lens according to an embodiment of the present application.

Fig. 6 is a partial schematic view illustrating still another implementation variation of the split lens according to an embodiment of the present application.

Fig. 7 is a schematic diagram illustrating still another implementation variation of the split lens according to an embodiment of the present application.

Fig. 8 is a schematic diagram illustrating still another implementation variation of the split lens according to an embodiment of the present application.

Fig. 9 is a schematic diagram illustrating still another implementation variation of the split lens according to an embodiment of the present application.

Fig. 10 illustrates a schematic view of the split type lens illustrated in fig. 9 being assembled in a terminal device.

Fig. 11A and 11B illustrate a schematic view of an assembly process of the split type lens according to an embodiment of the present application.

Fig. 12 illustrates a schematic diagram of a camera module according to an embodiment of the present 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.

Exemplary Split lens and Process for assembling same

As shown in fig. 2, a split type lens 20 according to an embodiment of the present application is illustrated, wherein the split type lens includes a plurality of lens portions, for example, two, three, four or more lens portions. In particular, in the embodiment of the present application, it is exemplified that the split type lens 20 includes two lens portions, that is, the split type lens 20 includes a first lens portion 21 and a second lens portion 22, wherein the first lens portion 21 is assembled to the second lens portion 22 to form the split type lens 20.

As shown in fig. 2, in the embodiment of the present application, the first lens portion 21 includes a first optical lens 211, and the second lens portion 22 includes a second barrel 222 and at least one second optical lens 221 installed in the second barrel 222. In particular, in the embodiment of the present application, the second barrel 222 has a bearing portion 223 extending inward from the top of the second barrel 222, the inner diameter of the bearing portion 223 decreases from bottom to top along the optical axis direction set by the split lens 20, so that a bearing surface 2230 for engaging with the second optical lens 221 on the topmost side is formed on the inner side surface of the bearing portion 223 (here, the upper direction represents the direction of the second barrel 222 toward the object side, the lower direction represents the direction of the second barrel 222 toward the image side, and the top-down represents the direction from the object side toward the image side). As shown in fig. 2, in the embodiment of the present application, when the at least one second optical lens 221 is mounted on the second barrel 222, the second optical lens 221 located at the top side is fittingly engaged with the bearing portion 223, and the upper surface of the second optical lens 221 located at the top side is completely exposed to the top of the second barrel 222. Here, in the present embodiment, "engagement" includes that the second optical lens 221 on the topmost side fits fittingly to the bearing part 223, or that the second optical lens 221 on the topmost side bears fittingly against the bearing part 223, and other fitting relationships that can achieve equivalent effects, that is, in the present embodiment, "engagement" includes meaning and extension that should be interpreted based on the effects illustrated in the embodiments and the related description and cannot be regarded as "engagement" in a conventional sense.

It should be noted that, because of such mounting manner and structural configuration, after the at least one second optical lens 221 is mounted to the second barrel 222, the upper surface of the second optical lens 221 located at the topmost side is completely exposed to the top of the first bearing portion 225. That is, compared to the conventional split-type lens, in the embodiment of the present application, there is no "lens barrel sky" structure between the first lens portion 21 and the second optical lens 221 adjacent thereto, so that the adjustment range between the first lens portion 21 and the second lens portion 22 is increased.

In particular, in the embodiment of the present application, the bearing portion 224 is integrally formed with the second barrel 222. That is, in the embodiment of the present application, the bearing portion 224 is a part of the second barrel 222 and is naturally provided after the second barrel 222 is molded. Of course, in other examples of the present application, the bearing portion 224 may also be implemented as a prefabricated member and formed on the top of the second barrel 222 by gluing or the like. And is not intended to limit the scope of the present application.

More specifically, as shown in fig. 2, in the embodiment of the present application, the bearing portion 223 has a tapered structure, and the inner diameter thereof gradually decreases from bottom to top along the optical axis direction of the split type lens 20. That is, in the present embodiment, the carrying part 223 has a tapered opening, so that when the maximum outer diameter of the second optical lens 221 located at the topmost side exceeds the minimum inner diameter of the opening, the carrying part 223 does not allow the topmost second optical lens 221 to pass through the carrying part 223 frontally through the opening. That is, in the embodiment of the present application, by a special structure and a special size design, the bearing part 223 can be used as a bearing position of the second optical lens 221 at the top side, and the second optical lens 221 at the top side can be installed in the second barrel 222.

Particularly, in the embodiment of the present application, the inner side surface of the bearing portion 223 is an annular surface, and the inner diameter of the annular surface gradually decreases from bottom to top along the optical axis direction of the split lens 20, that is, the inner side surface of the bearing portion 223 is an inwardly inclined annular surface. In the embodiment of the present application, the outer side surface 2210 of the second optical lens 221 at the top side has a shape matched with the inner side surface of the bearing part 223, so that when the second optical lens 221 at the top side is fittingly engaged with the bearing part 223, the outer side surface 2210 of the second optical lens 221 at the top side can be tightly fitted with the bearing surface 2230 of the bearing part 223. Here, the seating surface 2230 of the carrier 223 denotes a portion of the inner surface of the carrier 223 that is in contact with the second optical lens 221 on the top side. Also, the outer side surface 2210 of the second optical lens 221 at the top side closely fits to the bearing surface 2230 of the bearing part 223 represents: the fit clearance between the outer side surface 2210 of the second optical lens 221 at the topmost side and the bearing surface 2230 of the bearing part 223 is: -10 to 10 microns, preferably the difference between the outer diameter of the second optical lens 221 at the topmost side and the inner diameter of the bearing part is in the range: -2 to 8 microns.

More specifically, as shown in fig. 2, in the embodiment of the present application, the inner side surface of the carrying part 223 is a complete inclined surface, and the outer side surface of the second optical lens 221 at the topmost side is an inclined surface adapted to the inner side surface of the carrying part 223. Fig. 3A illustrates a partial schematic view of a modified implementation of the split lens according to an embodiment of the present application. As shown in fig. 3A, in this modified embodiment, the inner side surface of the bearing portion 223 includes a first inclined surface, a second inclined surface and a transition surface extending between the first inclined surface and the second inclined surface, that is, in the embodiment of the present application, the inner side surface of the bearing portion 223 is not a complete inclined surface. Correspondingly, the outer side surface of the second optical lens 221 at the topmost side includes a first inclined surface adapted to the inner side surface of the carrying part 223, a second inclined surface, and a transition surface extending between the first inclined surface and the second inclined surface, that is, the first inclined surface of the second optical lens 221 at the topmost side has a slope adapted to the first inclined surface of the carrying part 223, the second inclined surface of the second optical lens 221 at the topmost side has a slope adapted to the second inclined surface of the carrying part 223, and the transition surface of the second optical lens 221 at the topmost side has a shape adapted to the transition surface of the carrying part 223. In this way, when the second optical lens 221 located at the top side is fittingly engaged with the bearing portion 223, the outer side surface 2210 of the second optical lens 221 at the top side can be tightly fitted with the bearing surface 2230 of the bearing portion 223, which is embodied as: the first inclined surface of the second optical lens 221 at the top side is closely matched with the first inclined surface of the bearing part 223, the second inclined surface of the second optical lens 221 at the top side is closely matched with the second inclined surface of the bearing part 223, and the transition surface of the second optical lens 221 at the top side corresponds to the transition surface of the bearing part 223.

Of course, in other examples of this modified embodiment, the shape between the transition surface of the second optical lens 221 at the top and the transition surface of the carrying part 223 may not be adapted, and only the first inclined surface of the second optical lens 221 at the top is adapted to the first inclined surface of the carrying part 223, and the second inclined surface of the second optical lens 221 at the top is adapted to the second inclined surface of the carrying part 223. Also, as shown in fig. 3A, in this variant implementation, the transition surface is parallel to the plane of the upper surface of the load-bearing part. Of course, in other examples of this variant implementation, the transition surface may be configured as an inclined surface, or the transition surface may also be configured as an arc surface, which is not limited in this application.

Also, in this modified embodiment, the lengths of the first inclined surface of the second optical lens 221 at the topmost side and the first inclined surface of the carrier 223 and the lengths between the second inclined surface of the second optical lens 221 at the topmost side and the second inclined surface of the carrier 223 are not adapted so that, when the outer side surface 2210 of the second optical lens 221 at the topmost side can be tightly fitted to the bearing surface 2230 of the carrier 223, there is a gap between the transition surface of the second optical lens 221 at the topmost side and the transition surface of the carrier 223. Of course, in other examples of the application, the lengths of the first inclined surface of the second optical lens 221 at the top side and the first inclined surface of the bearing part 223 and the lengths between the second inclined surface of the second optical lens 221 at the top side and the second inclined surface of the bearing part 223 may be configured to be the same, so that when the outer side surface 2210 of the second optical lens 221 at the top side can be tightly fitted to the bearing surface 2230 of the bearing part 223, the transition surface of the second optical lens 221 at the top side completely abuts against the transition surface of the bearing part 223, as shown in fig. 3B (i.e., there is no gap between the transition surfaces of the second optical lens 221 at the top side completely abuts against the transition surface of the bearing part 223).

In particular, in this modified embodiment, the first and second inclined surfaces in the inner side surface of the mount 223 are parallel to each other, and the first and second inclined surfaces in the outer side surface of the second optical lens 221 at the topmost side are parallel to each other, so as to improve the accuracy of assembling the second optical lens 221 at the topmost side to the mount 223. Of course, in other examples of this modified embodiment, the first inclined surface and the second inclined surface of the inner surface of the carrying part 223 may not be parallel to each other, and the first inclined surface and the second inclined surface of the outer surface of the second optical lens 221 at the top side may not be parallel to each other, which is not limited by the present application.

It should be understood that, since the second optical lens 221 at the top side is supported by the supporting surface 2230 of the supporting portion 223, there is no need to provide a "lens barrel sky" structure on the first lens portion 21 and the second lens portion 22. That is, the adjustment gap between the first optical lens 211 and the second optical lens 221 at the top side is no longer affected by the "lens barrel sky" structure of the second lens barrel 222, so that the design freedom of the non-optical area of the second optical lens 221 at the top side is higher and the molding is easier.

In order to ensure the assembly stability of the bearing part 223 and the second optical lens 221 at the topmost side, in the embodiment of the present application, the thickness of the bearing part 223 is preferably not less than 0.15mm, and more preferably, the thickness of the bearing part 223 is not less than 0.2 mm. Also, in the embodiment of the present application, the included angle between the bearing surface 2230 and the optical axis, and the included angle between the outer side surface 2210 of the second optical lens 221 at the top side and the optical axis are in the range of 1 ° to 80 °. More preferably, the included angle between the bearing surface 2230 and the optical axis and the included angle between the outer side surface 2210 of the second optical lens 221 at the topmost side and the optical axis are in a range of 10 ° to 60 °.

In particular, in the embodiment of the present application, when the second optical lens 221 located at the topmost side is fittingly engaged with the bearing part 223, the upper surface of the structural region of the second optical lens 221 located at the topmost side is flush with the upper surface of the bearing part 223. That is to say, in the embodiment of the present application, when the second optical lens 221 located at the topmost side is fittingly engaged with the bearing part 223, the upper surface of the structural region of the second optical lens 221 located at the topmost side and the upper surface of the bearing part 223 form a flat surface.

Fig. 3C illustrates a partial schematic view of another implementation variation of the split lens 20 according to an embodiment of the present application. As shown in fig. 3C, in this modified embodiment, when the second optical lens 221 located at the top side is fittingly engaged with the carrying part 223, the upper surface of the structural region of the second optical lens 221 located at the top side protrudes from the upper surface of the carrying part 223. That is, in this modified implementation, the upper surface of the structural region of the second optical lens 221 at the topmost side is higher than the upper surface of the carrier 223. It should be understood that when the top surface of the structural region of the second optical lens 221 at the top side protrudes from the top surface of the bearing part 223, when the first optical lens 211 is assembled on the second optical lens 221 through the active alignment process, the second barrel 222 does not interfere with the active alignment, and the length of the structural region of the first optical lens 211 can be freely adjusted without being limited by the second barrel 222.

Fig. 4 is a schematic diagram illustrating still another variant implementation of the split lens 20 according to an embodiment of the present application. As shown in fig. 4, in this modified embodiment, when the second optical lens 221 located at the topmost side is fittingly engaged with the carrying part 223, the upper surface of the structural region of the second optical lens 221 located at the topmost side is lower than the upper surface of the carrying part 223. That is, in this modified implementation, the upper surface of the structural region of the second optical lens 221 at the topmost side is recessed downward with respect to the upper surface of the carrier 223. It should be understood that, when the upper surface of the structural region of the second optical lens 221 at the top side is lower than the upper surface of the bearing part 223, the second barrel 222 can protect the first optical lens 211 to some extent, reducing the possibility of displacement caused by external force.

That is, in the embodiment of the present application, the upper surface of the structural region of the second optical lens 221 at the topmost side may be lower than, higher than or flush with the upper surface of the carrying part 223, so that the adjustable gap height between the first optical lens 211 and the second optical lens 221 may be freely adjusted based on design requirements.

Further, in the embodiment of the present application, when the second optical lens 221 located at the topmost side is fittingly engaged with the carrying part 223, the lower surface of the structural region of the second optical lens 221 located at the topmost side is flush with the lower surface of the carrying part 223. That is, in the present application, when the second optical lens 221 located at the topmost side is fittingly engaged with the carrying part 223, the lower surface of the structural region of the second optical lens 221 located at the topmost side and the lower surface of the carrying part 223 form a flat surface. Preferably, in the embodiment of the present application, the upper surface of the structural region of the second optical lens 221 immediately adjacent to the second optical lens 221 at the top-most side is a flat surface, so that the second optical lens 221 immediately adjacent to the second optical lens 221 at the top-most side can be fittingly abutted against the lower surface of the structural region of the second optical lens 221 at the top-most side and the lower surface of the bearing part 223.

Fig. 5 illustrates a partial schematic view of still another variant implementation of the split lens 20 according to an embodiment of the present application. As shown in fig. 5, in this modified embodiment, when the second optical lens 221 located at the topmost side is fittingly engaged with the carrier 223, the lower surface of the structural region of the second optical lens 221 located at the topmost side is lower than the lower surface of the carrier 223. Preferably, in this modified implementation, the second optical lens 221 adjacent to the second optical lens 221 at the top side has a convex portion protrudingly formed on an upper surface of a structural region thereof, wherein when the second optical lens 221 adjacent to the second optical lens 221 at the top side is mounted to the second barrel 222, an upper surface of the convex portion abuts against a lower surface of the structural region of the second optical lens 221 at the top side. In this way, the second optical lens 221 adjacent to the second optical lens 221 on the top side can be engaged with the bearing portion 223 of the second barrel 222, so as to improve the coaxiality between the optical axis set by the second optical lens 221 and the central axis of the second barrel 222.

Fig. 6 illustrates a partial schematic view of still another variant implementation of the split lens 20 according to an embodiment of the present application. As shown in fig. 6, in this modified embodiment, when the second optical lens 221 located at the top side is fittingly engaged with the carrying part 223, the lower surface of the structural region of the second optical lens 221 located at the top side protrudes from the lower surface of the carrying part 223. Preferably, in this modified implementation, the second optical lens 221 next to the second optical lens 221 at the top side has a recess concavely formed on the upper surface of its structural region, wherein when the second optical lens 221 next to the second optical lens 221 at the top side is mounted on the second barrel 222, the inner surface of the recess abuts against the lower surface of the structural region of the second optical lens 221 at the top side. In this way, the second optical lens 221 immediately adjacent to the second optical lens 221 at the topmost side can directly bear against the second optical lens 221 at the topmost side, so that the assembly accuracy among the plurality of second optical lenses 221 is improved.

In order to further improve the assembling precision of the at least one second optical lens to the second barrel 222, in some examples of the present application, for example, in a modified implementation of the split lens 20 as illustrated in fig. 7, at least a portion of the second optical lenses 221 in the at least one second optical lens 221 are embedded with each other. It should be understood that when at least a portion of the second optical lens 221 of the at least one second optical lens 221 is assembled by fitting, it is beneficial to improve the optical axis alignment of the second optical lens 221, so that the assembly precision of the second lens portion 22 is improved, and thus the assembly efficiency and the imaging quality of the split lens 20 are improved. It is worth mentioning that in the optical system of the split lens, the decentering and tilting of the optical lens near the object side have a large influence on the imaging quality of the optical system (i.e. the first few optical lenses of the optical system of the split lens have high sensitivity), and therefore, preferably, in the embodiment of the present application, the first few second optical lenses 221 near the object side are configured as a fitting structure, for example, the topmost second optical lens 221 and the second optical lens 221 on the second topmost side are configured as a fitting structure.

It should be noted that, in the embodiment of the present application, after the at least one second optical lens 221 is assembled to the second barrel 222 to form the second lens portion 22, a light shielding layer 214 may be further disposed on the non-optical area of the second optical lens 221 located at the topmost side to prevent external stray light from entering. Of course, the light shielding layer 214 may be disposed on the non-optical area of the second optical lens 221 located at the top side before assembly, which is not limited in this application. It should be noted that, in other examples of the present application, the light shielding layer 214 may also be made of other materials. For example, the light shielding layer 214 may be formed by attaching an SOMA sheet to the non-optical region of the first optical lens 211, which is not limited in this application.

It should be noted that in the embodiment of the present application and its modified implementations as illustrated in fig. 2 to 7, the first lens portion 21 is implemented as a "bare lens", that is, the first lens portion 21 includes only the first optical lens 211. In other words, in the embodiment of the present application, when the first lens portion 21 is assembled to the second lens portion 22, the first optical lens 211 of the first lens portion 21 is directly attached to the second lens portion 22, so that the determination of the relative position relationship between the first optical lens 211 and the optical lens located at the topmost side is more direct, which is beneficial to improving the assembly precision to obtain more ideal optical design parameters. Of course, in other examples of the present application, the first lens portion 21 may further include a first barrel 212 for mounting the first optical lens 211, as shown in fig. 8, which is not limited by the present application.

In particular, in the embodiment of the present application as shown in fig. 2, when the second optical lens 221 located at the topmost side is fittingly engaged with the carrying part 223, the upper surface of the structural region of the second optical lens 221 located at the topmost side is flush with the upper surface of the carrying part 223. Accordingly, in the present application, it is preferable that the lower surface of the structure region of the first optical lens 211 is a flat surface, so that the first optical lens 211 can adaptively correspond to the upper surface of the structure region of the second optical lens 221 at the topmost side. In a modified implementation of the split lens 20 shown in fig. 3C, when the second optical lens 221 located at the top side is fittingly engaged with the carrying portion 223, the upper surface of the structural region of the second optical lens 221 located at the top side is lower than the upper surface of the carrying portion 223. Accordingly, in this modified implementation, it is preferable that the first optical lens 211 has a convex portion protrudingly formed on a lower surface of a structural region thereof, the convex portion corresponding to an upper surface of a structural region of the second optical lens 221 on the topmost side. It should be understood that, in this modified implementation, when the first optical lens 211 is mounted on the upper surface of the second optical lens 221 at the top side, the first optical lens 211 is concavely mounted in the groove formed by the bearing part 223 and the second optical lens 221 at the top side, and in this way, the first optical lens 211 is protected.

Fig. 9 illustrates yet another variant implementation of the split lens according to an embodiment of the present application. As shown in fig. 9, in this modified implementation, the shape and structure of the first optical lens 211 are adjusted so that the split lens 20 has a "small-head" structural configuration. Specifically, in the embodiment of the present application, the first optical lens 211 included in the first lens portion 21 includes a structural region 213 and a protruding portion 214 protruding and extending upward from the structural region 213 to form a structural configuration of a "small head portion". It should be noted that in the embodiment of the present application, at least a portion of the upper surface of the protruding portion 214 forms the optical area 212 of the first optical lens 211, where the optical area 212 represents a portion of the first optical lens 211 participating in the transmission imaging, and correspondingly, the non-optical area of the first optical lens 211 represents a portion of the first optical lens 211 not participating in the transmission imaging, which includes the structure area 213 and a portion of the protruding portion 214 not participating in the transmission imaging.

As described above, in the related art, the "tube sky" structure raises the mounting base surface of the first optical lens 11P, so that the height design of the first optical lens 11P extending upward is affected. This effect is particularly noticeable when the split lens is assembled to a terminal device (e.g., a smartphone). Specifically, when the split type lens is mounted in the terminal device, the first optical lens 11P of the split type lens needs to be inserted into the screen opening. In order to ensure that the field angle of the split lens is not limited by the screen aperture while reducing the aperture size as much as possible, it is necessary to make the optical zone of the first optical lens 11P more prominent with respect to the non-optical zone. However, the presence of the "tube celestial surface" structure limits the degree of protrusion of the optical region of the first optical lens 11P relative to the non-optical region.

However, in this modified embodiment of the present application, by the structural configuration of the "small head" of the split lens 20, the optical area 212 of the first optical lens 211 can protrude relatively more than the structural area 213, so that when the split lens 20 is assembled in a terminal device in a manner that the first optical lens 211 is fitted in the through hole of the display screen of the terminal device, the optical area 212 of the first optical lens 211 can be closer to the top of the through hole to obtain a larger angle of view and a larger amount of light transmission, thereby ensuring that the camera module has higher imaging quality, as shown in fig. 10.

Specifically, in the embodiment of the present application, an included angle between the side wall of the protrusion 214 and the optical axis set by the split lens 20 is less than 15 °. Preferably, in the present embodiment, the side wall is substantially parallel to the optical axis. More preferably, in the embodiment of the present application, the side wall of the protruding portion 214 is substantially perpendicular to the upper surface of the structure region 213 while being substantially parallel to the optical axis, so that the transition region between the protruding portion 214 and the structure region 213 forms an "L" shaped structure. It is worth mentioning that in the implementation, limited by the processing technology, the sidewalls of the protruding portions 214 may not be completely parallel to the optical axis and completely perpendicular to the upper surface of the structure region 213, and the description manner of being substantially perpendicular to and substantially parallel to is adopted for describing the standard of structure design and processing. Preferably, the upper surface of the protrusion 214 is implemented in a convex type.

As described above, in the conventional split type lens, since the "tube sky" structure exists between the first optical lens 211 and the second optical lens 221, the mounting base surface of the first optical lens 211 is too high, resulting in an influence on the height design of the first optical lens 211 extending upward. In contrast, in the embodiment of the present application, the "lens barrel sky" structure is eliminated, and when the height design is performed, the height difference between the optical area 212 and the structure area 213 of the first optical lens 211 can be further increased, so that when the split lens 20 is assembled in a through hole of a display screen of a terminal device, the optical area 212 of the first optical lens 211 can be closer to the top of the through hole, so as to obtain a larger field angle and a larger light transmission amount, thereby ensuring that the camera module has higher imaging quality.

In particular, in the present embodiment, the highest point of the protrusion 214 protrudes at least 0.3-1.2mm above the lower surface of the structural region 213. That is, in the embodiment of the present application, the distance between the highest point of the protruding portion 214 and the upper surface of the structure region 213 is at least 0.3-1.2 mm. Meanwhile, the total height of the first optical lens 211 is 0.4 to 1.6 mm. Preferably, the total height of the first optical lens 211 is 0.9-1.6 mm. Also, preferably, in the present embodiment, the lateral dimension of the boss is not more than 2 mm.

To further increase the height difference between the optical zone 212 and the structured zone 213 of the first optical lens 211, in some examples of the present application, the second optical lens 221 at the top-most side includes a mounting platform (not shown) concavely formed on the upper end surface of the second optical lens 221, the mounting platform being configured to mount the first optical lens 211 thereon.

In a specific implementation, the first optical lens 211 may be implemented as a plastic lens, which may be injection molded by plastic (or, in some specific processes, the injection molded plastic lens may be further processed by grinding to cut or grind out a desired shape). Of course, in other examples of the present application, the first optical lens 211 may also be implemented as a glass lens, which may be prepared by a molding glass process and cut or ground into a desired shape. In particular, in the embodiment of the present application, the highest point of the convex portion 214 of the first optical lens 211 protrudes from the upper surface of the structure region 213 by a distance of at least 0.3 to 1.2mm, and the total height of the first optical lens 211 is 0.4 to 1.6 mm. That is, the thickness dimension of the first optical lens 211 is relatively high, resulting in a relatively low light transmittance of the first optical lens 211. Therefore, the use of a glass material with higher light transmittance can reduce the influence of the thickness of the first optical lens 211 on the light transmittance.

Specifically, the molding principle of the molded glass is as follows: the glass blank with the initial shape is placed in a precision processing forming die, the temperature is raised to soften the glass, and then the surface of the die is pressed to deform the glass under stress, and the glass is taken out in a split mode, so that the required lens shape can be formed. Since the first optical lens 211 is an aspheric lens and the molded glass needs to be processed by pressing the glass with a mold, the damage to the mold caused by the biconcave lens made of the molded glass is large, and therefore, the upper surface of the first optical lens 211 is preferably a convex surface. Meanwhile, since the molded glass is manufactured by a molding die, a large inclination angle may exist between the side wall of the convex portion 214 of the first optical lens 211 and the optical axis after the molded glass is molded, and at this time, the first optical lens 211 may be ground by a cold working technique, so that the included angle between the side wall of the convex portion 214 of the first optical lens 211 and the optical axis is less than 15 °.

It is noted that, when the first optical lens 211 is implemented as a glass lens, the glass preferably has a refractive index of 1.48 to 1.55 and a refractive index abbe number of 50 to 71. Thus, the split lens 20 has high imaging quality (e.g., well controlling aberrations such as chromatic dispersion within a certain range). Meanwhile, the glass material can have better temperature drift.

Further, in the embodiment of the present application, the first lens portion 21 is assembled to the second lens portion 22 by an Active Optical Alignment (AOA).

Specifically, the assembling process first includes: providing the first lens portion 21 and the second lens portion 22; then, the first lens section 21, the second lens section 22, and the photosensitive member are prepositioned in the optical axis direction; then, further, the relative position relationship between the first lens portion 21 and the second lens portion 22 is adjusted in an active calibration manner; finally, the first lens portion 21 is fixedly arranged on the second lens portion 22 to form the split type lens 20.

In the embodiment of the present application, adjusting the relative positional relationship between the first lens portion 21 and the second lens portion 22 in an active calibration manner includes:

the relative position relationship between the first lens part 21 and the second lens part 22 is adjusted based on the imaging quality of an image acquired by an imaging system formed by the first optical lens 211, the second lens part 22 and a photosensitive component.

Specifically, an image of a target to be measured is acquired by a photosensitive element in cooperation with the split optical lens, and then the molding quality and the adjustment amount of the split lens 20 are calculated by image imaging quality calculation methods such as SFR and MTF. Then, the relative positional relationship between the first lens portion 21 and the second lens portion 22 is adjusted in real time in at least one direction (at least one direction refers to the xyz direction and the directions of rotation about the xyz axis, respectively) according to the adjustment amount, so that the imaging quality (mainly including optical parameters such as peak value, curvature of field, astigmatism, etc.) of the split lens 20 reaches a preset threshold value after one or more adjustments.

In the embodiment of the present application, the first lens portion 21 has a structural configuration of a "bare lens" including only the first optical lens 211. Accordingly, the process of fixing the first lens portion 21 to the second lens portion 22 to form the split type lens 20 includes: first applying an adhesive 23 between the first optical lens 211 and the second optical lens 221 at the topmost side; further, the first lens section 21 is fixed to the second lens section 22 by curing the adhesive 23 to fixedly attach the first optical lens 211 to the second optical lens 221 at the topmost side. In particular, in the embodiment of the present application, the adhesive 23 may be cured by thermal curing or photo curing, that is, the adhesive 23 includes a photo-curing component or a thermal curing component. It should be noted that, in the embodiment of the present application, the step of applying the adhesive 23 may also be performed after the active calibration, that is, after the imaging quality correction of the split lens 20 is completed, the first lens portion 21 is removed, and then the adhesive 23 is applied to the corresponding position of the second lens portion 22. And is not intended to limit the scope of the present application.

Accordingly, when the first lens portion 21 is assembled to the second lens portion 22 by active alignment to form the split lens 20, as shown in fig. 2, in the embodiment of the present application, the first optical lens 211 is attached to the upper surface of the second optical lens 221 on the topmost side by an adhesive 23. That is, in the embodiment of the present application, the bonding position of the first lens section 21 and the second lens section 22 is set between the first optical lens 211 and the second optical lens 221 on the topmost side. Of course, in other examples of the present application, the bonding position may be disposed at other positions, for example, between the first optical lens 211 and the second barrel 222; between the first optical lens 211, the second optical lens 221 at the top side, and the second barrel 222, for which, the application is not limited. Also, it is preferable that the adhesive 23 includes a glue material of an opaque material to increase the effect of preventing stray light (which may be caused by external light or light emitted from the display screen itself by refraction or reflection).

It should be noted that, in the embodiment of the present application, after the first lens portion 21 is assembled to the second lens portion 22 by an active calibration method to form the split lens 20, an included angle range between an optical axis set by the second lens portion 21 and an optical axis set by the second lens portion 22 is less than 1 °, and preferably, the included angle range is less than 0.5 °.

It should be understood by those skilled in the art that when the split-type lens 20 is implemented as the split-type lens 20 as illustrated in fig. 4, that is, the first lens portion 21 further includes a first barrel 215 for accommodating the first optical lens 211, accordingly, the first lens portion 21 is attached to the second lens portion 22 by an adhesive 23 through an active alignment manner, wherein the bonding position may be disposed between the first barrel 215 and the second barrel 222, or between the first optical lens 211 and the second optical lens 221 at the top side, or between the first optical lens 211, the second optical lens 221 at the top side, the first barrel and the second barrel 222. And is not intended to limit the scope of the present application.

In summary, the split type lens and the assembling process thereof based on the embodiment of the present application are clarified, which eliminates the "lens barrel sky" structure of the first lens portion 21 and the second lens portion 22, so that the adjustment range of the split type lens 20 becomes larger on the one hand; on the other hand, the influence (especially, the height design) of the "lens barrel sky" structure on the optical design of the first optical lens 211 is eliminated, so that the optical area 212 of the first optical lens 211 can protrude relatively more than the structural area 213 thereof, so that when the divided type lens 20 is assembled in a terminal device in a manner that the first optical lens 211 is fitted in the through hole of the display screen of the terminal device, the optical area 212 of the first optical lens 211 can be more adjacent to the top of the through hole, so as to obtain a larger angle of view and a larger amount of light transmission.

It is worth mentioning that in other examples of the present application, the optical system of the split lens 20 can be configured in other manners, for example, the first lens portion 21 may include more optical lenses, and the second lens portion 22 may include fewer optical lenses. Also, in other examples of the present application, the split lens 20 further includes a greater number of lens portions. For example, the split lens 20 may include three lens portions: the lens assembly includes a first lens portion 21, a second lens portion 22, and a third lens portion (not shown), and the first lens portion 21, the second lens portion 22, and the third lens portion are assembled in an active calibration manner to ensure assembly accuracy and yield.

Method for assembling schematic split type lens

Fig. 11A and 11B are additional schematic views illustrating an assembly process of the split type lens according to an embodiment of the present application. As shown in fig. 11A and 11B, in the embodiment of the present application, the assembling process of the split type lens 20 includes:

firstly, providing a second barrel 222, at least one second optical lens 221 and a first lens part 21 including a first optical lens 211, wherein the second barrel 222 is provided with a bearing part 223 extending inwards from the top of the second barrel 222, and the inner diameter of the bearing part 223 is gradually reduced from bottom to top along the optical axis direction;

then, mounting the at least one second optical lens 221 to the second barrel 222 from the bottom of the second barrel 222 to form a second lens portion 22 from bottom to top in a flip-chip manner, wherein the second optical lens 221 located at the topmost side is fittingly engaged with the bearing portion 223, so that the upper surface of the second optical lens 221 at the topmost side is completely exposed to the top of the second barrel 222;

then, the first lens section 21, the second lens section 22, and the photosensitive member are prepositioned in the optical axis direction;

then, the relative positional relationship between the first lens portion 21 and the second lens portion 22 is adjusted in an active calibration manner; and

finally, the first lens portion 21 is fixedly arranged on the second lens portion 22 to form the split type lens 20.

In the claimed embodiment, the second optical lens 221 of the second carrier part 226, which abuts the carrier structure 224, comprises a positioning protrusion protruding upwards from its structure region 213. Accordingly, the step of mounting a portion of the at least one second optical lens 221 to the second carrying portion 226 from the bottom of the second carrying portion 226 from bottom to top in a flip-chip manner includes:

the second optical lens 221 abutting against the carrying structure 224 is mounted on the second carrying portion 226 in such a manner that the positioning protrusion engages with the carrying structure 224.

In summary, the assembling method of the split lens 20 based on the embodiment of the present application is illustrated, which can assemble the split lens 20 and the variant implementation thereof as described above.

Schematic camera module

As shown in fig. 12, a camera module according to an embodiment of the present application is illustrated, wherein the camera module 10 includes the split lens 20 and the photosensitive assembly 30 as described above. In a specific application, the camera module 10 can be configured as a front camera module 10 of a terminal device, so as to meet the requirements of a user for self-photographing and the like. In the embodiment of the present application, the terminal device includes, but is not limited to, a smart phone, a tablet computer, a wearable device, and the like. Of course, in other application examples, the camera module 10 may also be configured as a rear camera module, and this is not a limitation of the present application.

In the embodiment of the present application, the camera module 10 includes the split-type lens 20 and the photosensitive element 30, wherein the split-type lens 20 is kept in the photosensitive path of the photosensitive element 30, so that the light collected by the split-type lens 20 can form an image in the photosensitive element 30 along the photosensitive path. It should be understood by those skilled in the art that the photosensitive assembly 30 includes a circuit board 31, a photosensitive chip 32 electrically connected to the circuit board 31, at least one electronic component 32 disposed on the circuit board 31, and a package 33 disposed on the circuit board 31, wherein the split lens 20 is mounted on the package 33 (of course, the photosensitive assembly may also include other necessary elements, such as a filter element, etc.).

It should be noted that, as shown in fig. 12, the camera module 10 is a fixed-focus camera module, and those skilled in the art should know that the camera module 10 related to the present application can also be implemented as a moving-focus camera module, that is, the camera module 10 further includes a driving element (not shown) disposed between the split-type lens 20 and the photosensitive component 30, so that the split-type lens 10 is carried by the driving element to move along the photosensitive path, so as to change the distance between the split-type lens 10 and the photosensitive component 30. Of course, the camera module 10 related to the present application can also be implemented as an optical anti-shake camera module, that is, the camera module 10 further includes an anti-shake motor (not shown) disposed between the split lens 20 and the photosensitive assembly 30, so as to eliminate the influence of unintentional shake on the imaging quality during the shooting process through the anti-shake motor.

It should be noted that, in the camera module as illustrated in fig. 12, although the lens assembly 20 is exemplified by the lens assembly 20 illustrated in fig. 2, it should be understood by those skilled in the art that various modifications and combinations of modifications of the lens assembly 20 disclosed in the present application can be combined with the photosensitive element 30 to form the camera module 10. And is not intended to limit the scope of 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. A split type lens, comprising:

a first lens portion including a first optical lens;

2. The split type lens according to claim 1, wherein an inner side surface of the carrier forms a bearing surface for engaging the second optical lens at the topmost side, and when the second optical lens at the topmost side is fittingly engaged with the carrier, the outer side surface of the second optical lens at the topmost side is closely fitted to the bearing surface of the carrier.

3. The split type lens according to claim 1, wherein an inner side surface of the bearing portion is an inclined surface, and an outer side surface of the second optical lens at the topmost side is an inclined surface adapted to the inner side surface of the bearing portion.

4. The split type lens of claim 2, wherein the inner side surface of the carrier part includes a first inclined surface, a second inclined surface, and a transition surface extending between the first inclined surface and the second inclined surface, and the outer side surface of the second optical lens at the topmost side includes a first inclined surface adapted to the inner side surface of the carrier part, a second inclined surface, and a transition surface extending between the first inclined surface and the second inclined surface.

5. The split type lens of claim 4, wherein the first and second inclined surfaces in the inner side surface of the bearing part are parallel to each other, and the first and second inclined surfaces in the outer side surface of the second optical lens at the topmost side are parallel to each other.

6. A split lens according to any one of claims 2 to 5, wherein a fitting clearance between an outer side surface of the second optical lens at the topmost side and the bearing surface of the bearing portion is: -10 to 10 microns.

7. The split lens of claim 6, wherein a fit clearance between an outer side surface of the second optical lens at the topmost side and the bearing surface of the bearing part is: -2 to 8 microns.

8. A split lens according to claim 2, wherein the thickness of the bearing portion is not less than 0.15 mm.

9. The split type lens according to claims 2 to 5, wherein an angle between an inner side surface of the bearing portion and an optical axis, and an angle between an outer side surface of the second optical lens at the topmost side and the optical axis range from 1 ° to 80 °.

10. The split-type lens of claim 9, wherein an angle between the bearing surface and the optical axis and an angle between the outer side surface of the second optical lens at the topmost side and the optical axis range from 10 ° to 60 °.

11. The split lens according to claim 2, wherein when the second optical lens located at the topmost side is fittingly engaged with the bearing portion, an upper surface of the structural region of the second optical lens located at the topmost side is flush with an upper surface of the bearing portion.

12. The split type lens of claim 2, wherein when the second optical lens located at the topmost side is fittingly engaged with the bearing part, an upper surface of the structural region of the second optical lens located at the topmost side is lower than an upper surface of the bearing part.

13. The split type lens according to claim 2, wherein when the second optical lens located at the topmost side is fittingly engaged with the bearing portion, an upper surface of the structure region of the second optical lens located at the topmost side protrudes from an upper surface of the bearing portion.

14. A split lens according to any one of claims 11 to 13, wherein when the second optical lens located at the topmost side is fittingly engaged with the bearing portion, a lower surface of the structural region of the second optical lens located at the topmost side is flush with a lower surface of the bearing portion.

15. A split lens according to any one of claims 11 to 13, wherein when the second optical lens located at the topmost side is fittingly engaged with the bearing portion, a lower surface of the structural region of the second optical lens located at the topmost side is lower than a lower surface of the bearing portion.

16. A split lens according to any one of claims 11 to 13, wherein when the second optical lens located at the topmost side is fittingly engaged with the bearing portion, a lower surface of the structural region of the second optical lens at the topmost side protrudes from a lower surface of the bearing portion.

17. The split lens of claim 14, wherein an upper surface of the structured region of the second optical lens immediately adjacent to the topmost second optical lens is a flat surface to fittingly abut against a lower surface of the structured region of the topmost second optical lens.

18. The split type lens according to claim 15, wherein the second optical lens adjacent to the second optical lens at the topmost side has a protrusion protrudingly formed on an upper surface of a structure region thereof, and when the second optical lens adjacent to the second optical lens at the topmost side is mounted to the second barrel, an upper surface of the protrusion abuts against a lower surface of the structure region of the second optical lens at the topmost side.

19. The split type lens of claim 16, wherein the second optical lens adjacent to the second optical lens at the topmost side has a recess concavely formed on an upper surface of a structure region thereof, and an inner surface of the recess abuts against a lower surface of the structure region of the second optical lens at the topmost side when the second optical lens adjacent to the second optical lens at the topmost side is mounted to the second barrel.

20. The split lens of claim 11, wherein a lower surface of the structure region of the first optical lens is a flat surface.

21. The split type lens of claim 12, wherein the first optical lens has a convex portion protrudingly formed at a lower surface of a structural region thereof, the convex portion corresponding to an upper surface of a structural region of the second optical lens at a topmost side.

22. The split type lens according to claim 1, wherein the at least one second optical lens is flip-chip mounted into the second barrel from a bottom of the second barrel.

23. The split lens according to claim 1, wherein at least a part of the second optical lenses of the at least one second optical lens are fitted to each other.

24. The split lens according to claim 1, wherein a light shielding layer is provided on a non-optical region of the second optical lens located at the topmost side.

25. The split lens according to claim 1, wherein the first optical lens includes a structure region and a convex portion protruding upward from the structure region, at least a part of an upper surface of the convex portion forming the optical region of the first optical lens, wherein a highest point of the convex portion protrudes at least 0.3mm to 1.2mm above the upper surface of the structure region.

26. A split lens according to claim 21, wherein the lateral dimension of the boss is not more than 2 mm.

27. A split lens according to claim 22, wherein an angle between a side wall of the boss and an optical axis set by the split lens is less than 15 °.

28. The split lens of claim 1, wherein the first optical lens is bonded to the structural region of the second optical lens at the topmost side by an adhesive.

29. The split lens according to claim 1, wherein the first lens portion further comprises a first barrel for mounting the first optical lens, and the adhesive is applied between the first barrel and the second barrel and/or between the first barrel and a structural region of the second optical lens located at the topmost side and/or between the first optical lens and a structural region of the second optical lens located at the topmost side.

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

a split lens according to any one of claims 1 to 29; and

31. An assembling method of a split lens, comprising:

mounting the at least one second optical lens to the second lens barrel from the bottom of the second lens barrel to the bottom of the second lens barrel in a flip-chip manner to form a second lens portion, wherein the second optical lens positioned at the topmost side is fittingly engaged with the bearing part, so that the upper surface of the second optical lens at the topmost side is completely exposed to the top of the second lens barrel;