CN112540437B

CN112540437B - Split lens, assembling method thereof and camera module

Info

Publication number: CN112540437B
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: 2023-04-25
Anticipated expiration: 2039-09-23
Also published as: CN112540437A

Abstract

The application relates to a split lens, an assembling method thereof and a camera module. The split lens includes: including a first lens portion and a second lens portion of a first optical lens. The second lens part comprises a second lens barrel and at least one second optical lens. The second lens barrel is provided with a bearing part extending 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 optical axis direction. When the at least one second optical lens is mounted on the second lens barrel, the second optical lens at the topmost side is adaptively clamped on 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. In this way, the "barrel ceiling" structure of the first lens portion and the second lens portion is eliminated, so that the adjustment range of the split lens is made larger. And the split lens has higher assembly efficiency and precision.

Description

Split lens, assembling method thereof and camera module

Technical Field

The present disclosure relates to the field of optical lenses, and more particularly, to a split lens, an assembling method thereof, and an image capturing module.

Background

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

For the optical system of the split 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 of the second lens portion 2P is relatively determined after the first lens portion is assembled to the second lens portion. However, in the 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 the molding accuracy, and there is a limitation in the assembly accuracy between the optical lens and the lens barrel, resulting in an uncertainty in the distance between the optical areas of the first optical lens 11P and the second optical lens 21P located at the topmost side of the second lens section 2P. Therefore, in the assembling process of the split 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 exit surface of the first optical lens 11P of the first lens portion 1P and the light entrance surface of the second optical lens 21P located at the topmost side of 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. Also, if the air gap is too small, interference between the first lens portion 1P and the second lens portion 2P may occur during the process of assembling the two portions by means of active calibration.

Also, as shown in fig. 1, in the conventional split lens, the first lens portion 1P is mounted on the upper surface of the second barrel 22P, that is, there is a "ceiling" of the second barrel 22P between the first optical lens 11P and the second optical lens 21P immediately adjacent thereto. The existence of the 'lens barrel top surface' structure inevitably reduces the adjusting gap and influences the adjustment of the split lens, thereby influencing the quality of lens adjustment and the assembly yield.

Further, the 'lens barrel ceiling' 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 with the adjustment gap ensured as much as possible. In particular, in order to reserve a space for the "barrel ceiling" structure, the structural region of the second optical lens 21P immediately adjacent to the first optical lens 11P needs to be shifted toward the lens image side. Such a design allows the thickness of the junction between the structural region and the optical region of the topmost second optical lens 21P to be reduced, resulting in an increase in difficulty in molding the topmost second optical lens 21P. Such a design also causes the manufacturing tolerances of the surface type and the structural area of the imaging surface of the optical area of the second optical lens 21P to become large, so that the imaging quality of the split lens is degraded.

Further, the overall height of the optical system of the split lens is within a relatively determined range, and the existence of the "barrel ceiling" structure is equivalent to raising the mounting base surface of the first lens portion 1P, so that the height of the first lens portion 1P needs to be reduced to satisfy the overall height requirement of the optical system. That is, the "barrel ceiling" structure restricts the height design in which the first optical lens 11P extends upward.

In view of the foregoing, there is a need for an improved optical design for a split lens.

Disclosure of Invention

The main object of the present application is to provide a split lens, an assembling method thereof and an image capturing module, wherein the split optical lens is not provided with a 'lens barrel top surface' structure between a first lens portion and a second lens portion thereof, so as to increase an adjusting range of the split lens in an assembling process.

Another object of the present invention is to provide a split lens, an assembling method thereof, and an image capturing module, wherein the second lens section includes a second lens barrel and at least one second optical lens mounted in the second lens barrel, and an upper surface of the second optical lens at a topmost side is completely exposed to a top of the second lens barrel, so as to form a structural configuration without a "lens barrel ceiling" at the first lens section and the second lens section.

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

Another object of the present invention is to provide a split lens, an assembling method thereof, and an image capturing module, wherein, since the "lens barrel ceiling" structure is not provided, the degree of freedom of design of the structural areas of the first optical lens of the first lens portion and the second optical lens of the topmost side of the second lens portion is improved. In particular, the thickness dimension of the structural region of the first optical lens and the topmost second optical lens can be increased, and the second optical lens located at the topmost side having such a design is more easily demolded.

Another object of the present invention is to provide a split lens, an assembling method thereof, and an image pickup module, wherein, since a "lens barrel ceiling" structure is not provided between a first lens portion and a second lens portion thereof, 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, so that when the optical lens is assembled to a through hole of a display screen of a terminal device, the optical area of the first optical lens can be more adjacent to a top of the through hole to obtain a larger angle of view and a larger amount of light, thereby ensuring that the image pickup module has a higher imaging quality.

Another object of the present invention is to provide a split lens, an assembling method thereof, and an image capturing module, wherein a first optical light transmission 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, so as to obtain a larger field angle and light transmission, thereby ensuring that the image capturing module has a higher imaging quality.

Another object of the present invention is to provide a split lens, an assembling method thereof, and an image capturing module, wherein the protrusion of the first optical lens has a relatively small lateral dimension, so that an opening of a display screen with a relatively small dimension is required, thereby being capable of improving a "screen duty ratio" of a terminal device.

Another object of the present invention is to provide a split lens, an assembling method thereof, and an image capturing module, wherein the first lens portion is assembled to the second lens portion in an active calibration manner, and in this way, optical performance, assembly accuracy and efficiency of the split lens are improved.

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 claims.

To achieve at least one of the above objects or advantages, the present application provides a split lens comprising:

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 arranged 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 arranged on the second lens barrel, the second optical lens positioned at the topmost side is adaptively clamped on 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 an adjustment gap is provided between the first lens portion and the second lens portion, and the first lens portion is attached to the second lens portion by an adhesive.

In the split lens according to the present application, an inner side surface of the bearing portion forms a bearing surface for engaging a topmost second optical lens, and when the topmost second optical lens is adaptively engaged with the bearing portion, an outer side surface of the topmost second optical lens is tightly fitted with the bearing surface of the bearing portion.

In the split lens according to the present 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 topmost side is an inclined surface adapted to the inner side surface of the bearing part.

In the split lens according to the present application, the inner side surface of the bearing 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, a second inclined surface, and a transition surface extending between the first inclined surface and the second inclined surface, which are adapted to the inner side surface of the bearing part.

In the split 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 on the topmost side are parallel to each other.

In the split lens according to the present application, a fit gap 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.

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

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

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

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

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

In the split lens according to the present application, when the second optical lens located at the topmost side is adaptively engaged with the bearing portion, an upper surface of a structural area of the second optical lens located at the topmost side protrudes from an upper surface of the bearing portion.

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

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

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

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

In the split lens according to the present application, the second optical lens immediately adjacent to the topmost second optical lens has a convex portion formed protruding from an upper surface of a structural region thereof, and when the second optical lens immediately adjacent to the topmost second optical lens is mounted to the second barrel, an upper surface of the convex portion is abutted against a lower surface of the structural region of the topmost second optical lens.

In the split lens according to the present application, the second optical lens immediately adjacent to the topmost second optical lens has a concave portion concavely formed on an upper surface of a structural region thereof, and when the second optical lens immediately adjacent to the topmost second optical lens is mounted to the second barrel, an inner surface of the concave portion is abutted against a lower surface of the structural region of the topmost second optical lens.

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

In the split lens according to the present application, the first optical lens has a convex portion formed protrusively 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 a topmost side.

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

In the split lens according to the present application, at least a part of the at least one second optical lens is embedded with each other.

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

In the split lens according to the present application, the lateral dimension of the boss is not more than 2mm.

In the split lens according to the present application, an included angle between the side wall of the convex portion and the optical axis set by the split lens is smaller than 15 °.

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

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

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

In the split lens according to the present application, the first optical lens is adhered to the structural region of the second optical lens located at the topmost side by an adhesive.

In the split lens according to the present application, the first lens section 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

and the photosensitive assembly, wherein the split 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 mounted on the photosensitive assembly, and the optical lens is mounted 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 a first optical lens, wherein the second lens barrel is provided with a bearing part extending 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 on the second bearing part from the bottom of the second lens barrel in a flip-chip manner from bottom to top, wherein the second optical lens positioned at the topmost side is adaptively clamped on the bearing part, so that the upper surface of the second optical lens positioned at the topmost side is completely exposed at the top of the second lens barrel;

Pre-positioning the first lens portion, the second lens portion and the photosensitive assembly along an optical axis direction;

adjusting the relative position relationship between the first lens part and the second lens part in an active calibration mode; and

and fixing the first lens part on the second lens part to form the split lens.

Further objects and advantages of the present application will become fully apparent from the following description and the accompanying 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 appended claims.

Drawings

The foregoing and other objects, features and advantages of the present application will become more apparent from the following more particular description of embodiments of the present application, as illustrated in the accompanying drawings. The accompanying drawings are included to provide a further understanding of embodiments of the application and are incorporated in and constitute a part of this specification, illustrate the application and not constitute a limitation to the application. In the drawings, like reference numerals generally refer to like parts or steps.

Fig. 1 illustrates a schematic structural view of a conventional split lens.

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

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

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

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

Fig. 4 illustrates a partial schematic view of yet another variant implementation of the split lens according to an embodiment of the present application.

Fig. 5 illustrates a partial schematic view of yet another variant implementation of the split lens according to an embodiment of the present application.

Fig. 6 illustrates a partial schematic view of yet another variant implementation of the split lens according to an embodiment of the present application.

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

Fig. 8 illustrates a schematic diagram of yet another variant implementation of the split lens according to an embodiment of the present application.

Fig. 9 illustrates a schematic diagram of yet another variant implementation of the split lens according to an embodiment of the present application.

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

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

Fig. 12 illustrates a schematic diagram of an imaging 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 apparent that the described embodiments are only some of the embodiments of the present application and not all of the embodiments of the present application, and it should be understood that the present application is not limited by the example embodiments described herein.

Exemplary split lens and assembling process thereof

As shown in fig. 2, a split lens 20 according to an embodiment of the present application is illustrated, wherein the split 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, taking an example that the split lens 20 includes two lens portions, that is, the split lens 20 includes a first lens portion 21 and a second lens portion 22, wherein the first lens portion 21 is assembled with the second lens portion 22 to form the split 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 lens barrel 222 and at least one second optical lens 221 installed in the second lens 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, and the inner diameter of the bearing portion 223 is reduced from bottom to top along the optical axis direction set by the split lens 20, so that a bearing surface 2230 for engaging the second optical lens 221 at the topmost side is formed on the inner side surface of the bearing portion 223 (here, the upper direction indicates the direction of the second barrel 222 toward the object side, the lower direction indicates the direction of the second barrel 222 toward the image side, and the top-down indicates the direction of the second barrel 222 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 lens barrel 222, the second optical lens 221 located at the topmost side is fittingly engaged with the bearing portion 223, and the upper surface of the second optical lens 221 located at the topmost side is completely exposed to the top of the second lens barrel 222. Here, in the embodiment of the present application, "engagement" includes that the second optical lens 221 on the topmost side is fittingly attached to the carrying portion 223, or that the second optical lens 221 on the topmost side is fittingly supported against the carrying portion 223, and other engagement relationships capable of achieving the same effect, that is, in the embodiment of the present application, the meaning and extension included in "engagement" should be interpreted based on the effects illustrated in the embodiment and the related description and not be regarded as "engagement" in a conventional sense.

In particular, in the embodiment of the present application, the bearing portion 223 is integrally formed with the second barrel 222. That is, in the embodiment of the present application, the carrying portion 223 is a part of the second lens barrel 222, and naturally exists after the second lens barrel 222 is molded. Of course, in other examples of the present application, the carrying portion 223 may be implemented as a preform, and formed on the top of the second barrel 222 by gluing or the like. This is not limiting 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 lens 20. That is, in the present embodiment, the carrying portion 223 has a tapered opening such 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 portion 223 does not allow the second optical lens 221 located at the topmost side to pass through the carrying portion 223 frontally through the opening. That is, in the embodiment of the present application, the bearing portion 223 can be used as a bearing position of the second optical lens 221 at the topmost side, by special structure and size design, and the second optical lens 221 at the topmost side can be mounted in the second lens barrel 222.

In particular, in the embodiment of the present application, the inner side surface of the bearing portion 223 is an annular surface, and the inner diameter thereof 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 annular surface inclined inwards. In the embodiment of the present application, the outer side surface 2210 of the second optical lens 221 on the topmost side has a shape that is adapted to the inner side surface of the carrier 223, so that when the second optical lens 221 on the topmost side is fittingly engaged with the carrier 223, the outer side surface 2210 of the second optical lens 221 on the topmost side can be tightly fitted to the bearing surface 2230 of the carrier 223. Here, the bearing surface 2230 of the bearing part 223 represents a portion of the inner surface of the bearing part 223 that is in contact with the topmost second optical lens 221. Further, the outer surface 2210 of the second optical lens 221 on the topmost side is closely fitted to the bearing surface 2230 of the bearing portion 223, which indicates that: the fit clearance between the outer side surface 2210 of the second optical lens 221 on the topmost side and the bearing surface 2230 of the bearing portion 223 is: -10 to 10 microns, preferably the difference between the outer diameter of the topmost second optical lens 221 and the inner diameter of the bearing portion ranges from: -2 to 8 microns.

More specifically, as shown in fig. 2, in the embodiment of the present application, the inner side surface of the bearing portion 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 that is adapted to the inner side surface of the bearing portion 223. Fig. 3A illustrates a partial schematic view of a variant 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 carrying 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 this embodiment, the inner side surface of the carrying portion 223 is not a complete inclined surface. Accordingly, 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 bearing portion 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 an adapted inclination with the first inclined surface of the bearing portion 223, the second inclined surface of the second optical lens 221 at the topmost side has an adapted inclination with the second inclined surface of the bearing portion 223, and the transition surface of the second optical lens 221 at the topmost side has an adapted shape with the transition surface of the bearing portion 223. In this way, when the second optical lens 221 located at the topmost side is adaptively engaged with the bearing portion 223, the outer side surface 2210 of the second optical lens 221 located at the topmost side can be tightly fitted to the bearing surface 2230 of the bearing portion 223, which is specifically expressed as: the first inclined surface of the second optical lens 221 at the top is tightly matched with the first inclined surface of the bearing portion 223, the second inclined surface of the second optical lens 221 at the top is tightly matched with the second inclined surface of the bearing portion 223, and the transition surface of the second optical lens 221 at the top corresponds to the transition surface of the bearing portion 223.

Of course, in other examples of this variant implementation, the shape between the transition surface of the second optical lens 221 at the topmost side and the transition surface of the carrier 223 may also be not adapted, and only the first inclined surface of the second optical lens 221 at the topmost side is adapted to the first inclined surface of the carrier 223, and the second inclined surface of the second optical lens 221 at the topmost side is adapted to the second inclined surface of the carrier 223. And, as shown in fig. 3A, in this variant implementation, the transition surface is parallel to the plane of the upper surface of the carrier. 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 arcuate surface, which is not limiting of the present application.

Also, in this modified embodiment, the lengths of the first inclined surface of the second optical lens 221 on 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 on 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 on the topmost side can be closely fitted to the bearing surface 2230 of the carrier 223, a gap exists between the transition surface of the second optical lens 221 on the topmost side and the transition surface of the carrier 223. Of course, in other examples of application, 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 may also be configured to be uniform, so that when the outer side surface 2210 of the second optical lens 221 at the topmost side can be closely fitted to the bearing surface 2230 of the carrier 223, the transition surface of the second optical lens 221 at the topmost side is entirely abutted against the transition surface of the carrier 223, as shown in fig. 3B (i.e., there is no gap between the transition surfaces of the second optical lens 221 at the topmost side and the carrier 223).

In particular, in this modified embodiment, the first inclined surface and the second inclined surface in the inner side surface of the carrier 223 are parallel to each other, and the first inclined surface and the second inclined surface in the outer side surface of the topmost second optical lens 221 are parallel to each other, so that the accuracy of assembling the topmost second optical lens 221 to the carrier 223 is improved. Of course, in other examples of the modification, the first inclined surface and the second inclined surface in the inner side surface of the carrier 223 may not be parallel to each other, and the first inclined surface and the second inclined surface in the outer side surface of the topmost second optical lens 221 may not be parallel to each other, which is not limited to the present application.

It should be understood that, since the second optical lens 221 at the topmost side is supported against the supporting surface 2230 of the supporting portion 223, there is no need to provide a "barrel ceiling" structure between 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 not affected by the "barrel ceiling" structure of the second 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 assembling stability of the carrying portion 223 with the second optical lens 221 at the topmost side, it is preferable that the thickness of the carrying portion 223 is not less than 0.15mm, and more preferable that the thickness of the carrying portion 223 is not less than 0.2mm in the embodiment of the present application. Also, in the embodiment of the present application, the angle between the bearing surface 2230 and the optical axis, and the angle between the outer side surface 2210 of the second optical lens 221 at the topmost side and the optical axis are in the range of 1 ° to 80 °. More preferably, the bearing surface 2230 forms an angle with the optical axis in the range of 10 ° to 60 ° with the optical axis, and the outer surface 2210 of the second optical lens 221 on the topmost side forms an angle with the optical axis in the range of 10 °.

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

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

Fig. 4 illustrates a schematic diagram of yet another variant implementation of the split lens 20 according to an embodiment of the present application. As shown in fig. 4, in this modification, when the second optical lens 221 located at the topmost side is fittingly engaged with the carrying portion 223, the upper surface of the structural region of the second optical lens 221 at the topmost side is lower than the upper surface of the carrying portion 223. That is, in this modification, the upper surface of the structural region of the second optical lens 221 on 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 area of the second optical lens 221 at the topmost side is lower than the upper surface of the carrying portion 223, the second lens barrel 222 may protect the first optical lens 211 to some extent, reducing the possibility of displacement caused by the 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, higher or flush with the upper surface of the carrier 223, so that the height of the adjustable gap between the first optical lens 211 and the second optical lens 221 can 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 portion 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 portion 223. That is, in the implementation of the present application, when the second optical lens 221 located at the topmost side is adaptively engaged with the bearing portion 223, the lower surface of the structural region of the second optical lens 221 at the topmost side and the lower surface of the bearing portion 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 adjacent to the topmost second optical lens 221 is a flat surface, so that the second optical lens 221 adjacent to the topmost second optical lens 221 can be fittingly abutted against the lower surface of the structural region of the topmost second optical lens 221 and the lower surface of the bearing portion 223.

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

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

In order to further improve the assembly accuracy of the at least one second optical lens to the second lens barrel 222, in some examples of the present application, for example, in a variant embodiment of the split lens 20 as illustrated in fig. 7, at least a portion of the at least one second optical lens 221 is mutually engaged with the second optical lens 221. It should be appreciated that, when at least a portion of the at least one second optical lens 221 is assembled by the fitting manner, it is advantageous to improve the alignment of the optical axis of the second optical lens 221, so that the assembly accuracy of the second lens portion 22 is improved, thereby being advantageous to improve the assembly efficiency and the imaging quality of the split lens 20. It should be noted that, in the optical system of the split lens, the decentration and tilt of the optical lens near the object side have a great influence on the imaging quality of the optical system (i.e., the sensitivity of the first several optical lenses of the optical system of the split lens is high), and therefore, in the embodiment of the present application, it is preferable that the first several optical lenses 221 near the object side are configured as a fitting structure, for example, the second optical lens 221 on the topmost side and the second optical lens 221 on the sub-top side are configured as fitting structures.

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 lens barrel 222 to form the second lens portion 22, a light shielding layer may be further disposed on a non-optical area of the second optical lens 221 located at the topmost side, so as to avoid entering of external stray light. Of course, a light shielding layer may be provided on the non-optical area of the second optical lens 221 located at the topmost side before assembly, which is not limited to the present application. It should be noted that, in other examples of the present application, the light shielding layer may also be made of other materials. For example, the light shielding layer may be formed by attaching a 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 variant implementation as illustrated in fig. 2 to 7, the first lens portion 21 is implemented as a "bare lens", i.e. the first lens portion 21 comprises 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 positional 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 accuracy 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 lens barrel 215 for mounting the first optical lens 211, as shown in fig. 8, which is not limited in this 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 portion 223, the upper surface of the structural region of the second optical lens 221 at the topmost side is flush with the upper surface of the carrying portion 223. Accordingly, in the implementation of the present application, it is preferable that the lower surface of the structural 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 structural region of the second optical lens 221 at the topmost side. In a variant of the split lens 20 shown in fig. 4, when the second optical lens 221 located at the topmost 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 topmost side is lower than the upper surface of the carrying portion 223. Accordingly, in this modification, it is preferable that the first optical lens 211 has a convex portion formed protrusively on the lower surface of the structural region thereof, the convex portion corresponding to the upper surface of the structural region of the second optical lens 221 on the topmost side. It should be understood that in this variant, when the first optical lens 211 is mounted on the upper surface of the second optical lens 221 on the topmost side, the first optical lens 211 is concavely mounted in the groove formed by the bearing 223 and the second optical lens 221 on the topmost side, in such a way as to function as a protection for the first optical lens 211.

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 variant 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 present embodiment, the first optical lens 211 included in the first lens portion 21 includes a structural region 213 and a boss 214 extending upward protruding from the structural region 213 to form a structural configuration of "small head". 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 that participates in light-transmitting imaging, and correspondingly, the non-optical area of the first optical lens 211 represents a portion of the first optical lens 211 that does not participate in light-transmitting imaging, which includes the structural area 213 and a portion of the protruding portion 214 that does not participate in light-transmitting imaging.

As described above, in the related art, the "barrel ceiling" structure lifts the mount base 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 pronounced when the split lens is assembled to a terminal device (e.g., a smart phone). Specifically, when the split lens is assembled in the terminal device, the first optical lens 11P of the split lens needs to extend into the screen opening. In order to ensure that the angle of view 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 area of the first optical lens 11P more prominent relative to the non-optical area. However, the presence of the "barrel ceiling" 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 portion" of the split lens 20, the optical area 212 of the first optical lens 211 can relatively protrude more from the structural area 213 thereof, so that when the split lens 20 is assembled to a terminal device in such a manner that the first optical lens 211 is fitted into 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 to obtain a larger angle of view and light flux, thereby ensuring that the camera module has a higher imaging quality, as shown in fig. 10.

Specifically, in the embodiment of the present application, the included angle between the side wall of the protruding portion 214 and the optical axis set by the split lens 20 is smaller than 15 °. Preferably, in an embodiment of the present application, 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 parallel to the optical axis and is also substantially perpendicular to the upper surface of the structural region 213, so that the transition region between the protruding portion 214 and the structural region 213 forms an "L" structure. It should be noted that, in practice, it is not possible for the sidewalls of the protrusions 214 to be perfectly parallel to the optical axis and perfectly perpendicular to the upper surface of the structural region 213, subject to the machining process, in a manner substantially perpendicular and substantially parallel to this description is intended to describe the structural design and criteria for machining. Preferably, the upper surface of the boss 214 is implemented as a convex shape.

As described above, in the existing split lens, since there is a "barrel ceiling" structure 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 ceiling" structure is omitted, and the height difference between the optical area 212 and the structural area 213 of the first optical lens 211 may be further increased when the height design is performed, so that when the split lens 20 is assembled in the through hole of the display screen of the terminal device, the optical area 212 of the first optical lens 211 may be more adjacent to the top of the through hole, so as to obtain a larger angle of view and light flux, thereby ensuring that the camera module has a higher imaging quality.

In particular, in the present embodiment, the highest point of the protrusion 214 protrudes at least 0.3-1.2mm from 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 structural region 213 is at least 0.3-1.2mm. Meanwhile, the total height of the first optical lens 211 is 0.4-1.6mm. Preferably, the total height of the first optical lens 211 is 0.9-1.6mm. Also, preferably, in the embodiment of the present application, the lateral dimension of the boss is not more than 2mm.

In order to further raise the height difference between the optical region 212 and the structural region 213 of the first optical lens 211, in some examples of the present application, the topmost second optical lens 221 includes a mounting platform (not illustrated) concavely formed on an 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 polished to cut or polish 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 manufactured by a molding glass process and cut or polished to 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 structural 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 1.6mm. That is, the thickness dimension of the first optical lens 211 is relatively high, resulting in relatively low light transmittance of the first optical lens 211. Therefore, the use of a glass material having a higher light transmittance can reduce the influence of the larger thickness of the first optical lens 211 on the light transmittance.

Specifically, the molding principle of the molded glass is as follows: and placing the glass preform with the primary shape into a precision machining forming die, heating to soften the glass, and pressing the surface of the die to deform the glass under stress and separate the die to take out the glass, so that the required lens shape can be formed. Since the first optical lens 211 is an aspherical lens and the molded glass is required to be processed by pressing the glass using a mold, the mold is greatly damaged by the lens manufactured by molding the glass in a biconcave shape, and thus the upper surface of the first optical lens 211 is preferably convex. 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 molding the molded glass, and at this time, the first optical lens 211 may be ground by a cold working technique so that the 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 refractive index of the glass light transmission is preferably 1.48 to 1.55, and the refractive index abbe number thereof is preferably 50 to 71. In this way, the split lens 20 has high imaging quality (for example, chromatic aberration such as chromatic dispersion is well controlled within a certain range). Meanwhile, the glass material is selected to 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 means of active calibration (ActiveOpticalAlignment, AOA).

Specifically, the assembly process first includes: providing the first lens portion 21 and the second lens portion 22; then, the first lens portion 21, the second lens portion 22, and the photosensitive member are pre-positioned along the optical axis direction; then, 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 fixed to the second lens portion 22 to form the split 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:

based on the imaging quality of the image collected by the imaging system composed of the first optical lens 211, the second lens portion 22 and the photosensitive assembly, the relative positional relationship between the first lens portion 21 and the second lens portion 22 is adjusted.

Specifically, firstly, the photosensitive assembly is matched with the split optical lens to obtain an image of a measured object, and then, the forming quality and the adjustment amount of the split lens 20 are calculated through image imaging quality calculation methods such as SFR, MTF and the like. 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 xyz direction and a direction of rotation around 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 after one or more adjustments.

In the embodiment of the present application, the first lens portion 21 has a "bare lens" structural configuration, which includes 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 lens 20 includes: an adhesive 23 is first applied between the first optical lens 211 and the second optical lens 221 on the topmost side; further, the first lens portion 21 is fixed to the second lens portion 22 by curing the adhesive 23 to fixedly attach the first optical lens 211 to the second optical lens 221 on the topmost side. In particular, in the embodiment of the present application, the adhesive 23 may be cured by heat curing or light curing, that is, the adhesive 23 includes a light curing component or a heat 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. This is not limiting of the present application.

Accordingly, when the first lens portion 21 is assembled to the second lens portion 22 by means of 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 topmost second optical lens 221 by means of an adhesive 23. That is, in the embodiment of the present application, the bonding position of the first lens portion 21 and the second lens portion 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 lens barrel 222; among the first optical lens 211, the second optical lens 221 on the topmost side, and the second barrel 222, this is not limited to the present application. Also, it is preferable that the adhesive 23 includes a glue material of an opaque material to increase the effect of preventing stray light (stray light may be generated from 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 means of active calibration to form the split lens 20, an included angle between the optical axis set by the first lens portion 21 and the optical axis set by the second lens portion 22 is less than 1 °, preferably, an included angle range is less than 0.5 °.

It should be understood by those skilled in the art that, when the split lens 20 is implemented as the split lens 20 as illustrated in fig. 4, that is, the first lens part 21 further includes a first lens barrel 215 for accommodating the first optical lens 211, and accordingly, the first lens part 21 is attached to the second lens part 22 by means of an adhesive 23 by means of active alignment, wherein the adhesive position may be disposed between the first lens barrel 215 and the second lens barrel 222, or between the first optical lens 211 and the second optical lens 221 on the topmost side, or between the first optical lens 211, the second optical lens 221 on the topmost side, the first lens barrel and the second lens barrel 222. This is not limiting of the present application.

In summary, the split lens and the assembling process thereof according to the embodiment of the present application are illustrated, which cancel the "barrel ceiling" structure of the first lens portion 21 and the second lens portion 22, so that on one hand the adjusting range of the split lens 20 becomes larger; on the other hand, the influence of the "barrel ceiling" structure on the optical design (particularly, the height design) of the first optical lens 211 is eliminated, so that the optical area 212 of the first optical lens 211 can relatively protrude more from the structural area 213 thereof, so that when the split lens 20 is assembled to a terminal device in such a manner that the first optical lens 211 is fitted into 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 that a larger angle of view and light flux can be obtained.

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

Method for assembling schematic split lens

Fig. 11A and 11B illustrate a schematic diagram of an assembling process of the split 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 lens 20 includes:

first, a second lens barrel 222, at least one second optical lens 221 and a first lens portion 21 including a first optical lens 211 are provided, wherein the second lens barrel 222 has a bearing portion 223 extending inward from the top of the second lens barrel 222, and the inner diameter of the bearing portion 223 is tapered from bottom to top along the optical axis direction;

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

then, the first lens portion 21, the second lens portion 22, and the photosensitive member are pre-positioned along 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 actively calibrated manner; and

finally, the first lens portion 21 is fixed to the second lens portion 22 to form the split lens 20.

In summary, a method of assembling the split lens 20 according to the embodiments of the present application is illustrated, which is capable of assembling the split lens 20 and its modified implementation as described above.

Schematic camera module

As shown in fig. 12, an image capturing module according to an embodiment of the present application is illustrated, wherein the image capturing module 10 includes the split type 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 requirements of a user, such as self-timer shooting. In the embodiment of the 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, which is not limited in this application.

In this embodiment, the image capturing module 10 includes the split lens 20 and the photosensitive assembly 30 as described above, wherein the split lens 20 is held in a photosensitive path of the photosensitive assembly 30, so that the light collected by the split lens 20 can be imaged in the photosensitive assembly 30 along the photosensitive path. It should be appreciated 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 body 33 disposed on the circuit board 31, where the split lens 20 is mounted on the package body 33 (of course, the photosensitive assembly may further include other necessary elements, such as a filter element, etc.).

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

It should be noted that, in the image capturing module illustrated in fig. 12, the split lens 20 is illustrated as an example in the split lens 20 illustrated in fig. 2, and those skilled in the art will understand that various modifications and combinations of modifications of the split lens 20 disclosed in the present application can be combined with the photosensitive assembly 30 to form the image capturing module 10. This is not limiting 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 by way of example only and are not limiting. The objects of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been shown and described in the examples and embodiments of the invention may be modified or practiced without departing from the principles described.

Claims

1. A split lens, comprising:

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 arranged on the second lens barrel, wherein 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, the direction from the image side to the object side along the optical axis direction is from bottom to top, when the at least one second optical lens is arranged on the second lens barrel, the second optical lens arranged on the topmost side is adaptively clamped on the bearing part, so that the upper surface of the second optical lens on the topmost side is completely exposed on the top of the second lens barrel, an adjusting gap is formed between the first lens part and the second lens part, and the first lens part is attached to the second lens part through an adhesive.

2. The split lens according to claim 1, wherein an inner side surface of the bearing portion is configured to engage a bearing surface of the topmost second optical lens, wherein an outer side surface of the topmost second optical lens is tightly fitted to the bearing surface of the bearing portion when the topmost second optical lens is adaptively engaged with the bearing portion.

3. The split lens according to claim 1, wherein an inner side surface of the bearing portion is an inclined surface, wherein 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 lens according to claim 2, wherein an inner side surface of the bearing 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, wherein an outer side surface of the topmost second optical lens includes the first inclined surface, the second inclined surface, and the transition surface extending between the first inclined surface and the second inclined surface, which are adapted to the inner side surface of the bearing part.

5. The split lens according to claim 4, wherein the first inclined surface and the second inclined surface in the inner side surface of the carrier portion 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 on the topmost side are parallel to each other.

6. The split lens according to claim 2, wherein a fit gap between an outer side surface of the topmost second optical lens and the bearing surface of the bearing portion is: -10 to 10 microns.

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

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

9. The split lens according to claim 2, wherein an included angle range between an inner side surface of the bearing portion and the optical axis, and an included angle range between an outer side surface of the second optical lens on the topmost side and the optical axis is 1 ° to 80 °.

10. The split lens according to claim 9, wherein an angle between the bearing surface and the optical axis, and an angle between an outer side surface of the second optical lens on the topmost side and the optical axis are in a range of 10 ° to 60 °.

11. The split lens according to claim 2, wherein an upper surface of a structural region of the topmost second optical lens is flush with an upper surface of the carrier when the topmost second optical lens is fittingly engaged with the carrier.

12. 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 a structural region of the second optical lens located at the topmost side is lower than an upper surface of the bearing portion.

13. 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 a structural region of the second optical lens located at the topmost side protrudes from an upper surface of the bearing portion.

14. The 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 a structural region of the second optical lens at the topmost side is flush with a lower surface of the bearing portion.

15. The 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 a structural region of the second optical lens at the topmost side is lower than a lower surface of the bearing portion.

16. The 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 a structural region of the second optical lens located 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 a structured area 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 area of the topmost second optical lens.

18. The split lens according to claim 15, wherein the second optical lens immediately adjacent to the topmost second optical lens has a convex portion formed protruding from an upper surface of a structural region thereof, wherein when the second optical lens immediately adjacent to the topmost second optical lens is mounted to the second barrel, an upper surface of the convex portion abuts against a lower surface of the structural region of the topmost second optical lens.

19. The split lens barrel according to claim 16, wherein the second optical lens immediately adjacent to the topmost second optical lens has a recess concavely formed at an upper surface of a structural region thereof, wherein an inner surface of the recess is abutted against a lower surface of the structural region of the topmost second optical lens when the second optical lens immediately adjacent to the second optical lens is mounted to the second barrel.

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

21. The split lens according to claim 12, wherein the first optical lens has a convex portion formed protrusively 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 a topmost side.

22. The split lens of 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 at least one second optical lenses 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 of claim 1, wherein the first optical lens comprises a structural region and a boss protruding upward from the structural region, at least a portion of an upper surface of the boss forming an optical region of the first optical lens, wherein a highest point of the boss protrudes at least 0.3mm-1.2mm from the upper surface of the structural region.

26. The split lens of claim 21, wherein the lateral dimension of the boss is no more than 2mm.

27. The split lens of claim 21, 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 adhered to a structural region of the second optical lens located at the topmost side by an adhesive.

29. The split lens according to claim 1, wherein the first lens section further comprises a first barrel for mounting the first optical lens, wherein 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. A camera module, comprising:

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

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

providing a second lens barrel, at least one second optical lens and a first lens part comprising a first optical lens, wherein 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 the direction from the image side to the object side is from bottom to top along the optical axis direction;

mounting the at least one second optical lens to the second lens barrel from the bottom of the second lens barrel from bottom to top in a flip-chip manner to form a second lens part, wherein the second optical lens positioned at the topmost side is adaptively clamped to 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;

and fixing the first lens part on the second lens part to form the split lens.