Split lens and its assembly method and imaging module

Abstract

The present application relates to a split lens, an assembly method thereof, and an imaging module. The split lens includes a first lens portion including a first optical lens and a second lens portion. The second lens portion includes a second lens barrel and at least two second optical lenses. The second lens barrel includes a first bearing portion and a second bearing portion divided by a bearing structure disposed on the inner side thereof. Among them, part of the second optical lenses are mounted on the first bearing portion in an upright manner, and the remaining second optical lenses are mounted on the second bearing portion in an inverted manner. Moreover, the upper surface of the topmost second optical lens is completely exposed at the top of the first bearing portion. In this way, the "barrel top surface" structure of the first lens portion and the second lens portion is cancelled, so that the adjustment range of the split lens is larger. Moreover, the split lens has higher assembly efficiency and accuracy.

Description

Technical Field

[0001] This application relates to the field of optical lenses, and particularly to a split lens, its assembly method, and an imaging module. Background Art

[0002] In the optical design of split lenses, in order to obtain relatively ideal optical parameters, the assembly accuracy between each lens part is particularly crucial. Figure 1 The figure shows an existing split lens. As Figure 1 shown, the split lens includes two lens parts: a first lens part and a second lens part. Among them, the first lens part includes a first lens barrel and a first optical lens installed in the first lens barrel, and the second lens part includes a second lens barrel and at least two second optical lenses installed in the second lens barrel.

[0003] For the optical system of a split lens, ideally, after assembling the first lens part to the second lens part, the distance between the first optical lens of the first lens part and the optical zone of the second optical lens located at the topmost side in the second lens part is relatively determined. However, in the actual production process, the optical lenses themselves (including the first optical lens and the second optical lens located at the topmost side) are limited by the molding accuracy, and there are also limitations in the assembly accuracy between the optical lenses and the lens barrels, resulting in an uncertain distance between the first optical lens and the optical zone of the second optical lens located at the topmost side of the second lens part. Therefore, during the assembly process of the split lens, an adjustment gap needs to be reserved between the first lens part and the second lens part.

[0004] However, during the actual assembly process, the air gap between the light-emitting surface of the first optical lens of the first lens part and the light-incident surface of the second optical lens located at the topmost side in the second lens part is relatively small, which will affect the adjustable amount of the relative position between the first lens part and the second lens part. And if this air gap is too small, it will cause interference between the two during the process of assembling the first lens part to the second lens part by means of active calibration.

[0005] Moreover, as Figure 1 shown, in the existing split lens, the first lens part is installed on the upper surface of the second lens barrel. That is to say, there is a "top surface" of the second lens barrel between the first optical lens and the second optical lens adjacent to it. The existence of this "lens barrel top surface" structure inevitably reduces this adjustment gap, affecting the adjustment of this split lens, thereby affecting the lens adjustment quality and assembly yield.

[0006] Furthermore, the "top surface of the lens barrel" structure has a certain thickness. Therefore, on the premise of ensuring the adjustment gap as much as possible, the design freedom of the second optical lens 21 of the second lens part 2 is restricted. In particular, in order to reserve a setting space for the "top surface of the lens barrel" structure, the structural area of the second optical lens 21 adjacent to the first optical lens 11 needs to be offset in the direction of the image side of the lens. Such a design reduces the thickness at the connection between the structural area and the optical area of the topmost second optical lens 21, resulting in an increase in the forming difficulty of the topmost second optical lens 21. Such a design also causes the surface shape of the imaging surface of the optical area of the second optical lens 21 and the manufacturing tolerance of the structural area to become larger, resulting in a decrease in the imaging quality of the split lens.

[0007] In addition, the "top surface of the lens barrel" structure raises the installation base surface of the first optical lens 11, affecting the design of the upward extension height of the first optical lens 11. It should be understood that the overall height of the optical system of the split lens is within a relatively determined range. The existence of the "top surface of the lens barrel" structure is equivalent to raising the installation base surface of the first lens part 1. Therefore, the height of the first lens part 1 needs to be reduced to meet the overall height requirement of the optical system.

[0008] In summary, an improved optical design scheme for a split lens is needed. Summary of the Invention

[0009] The main object of the present application is to provide a split lens, its assembly method, and an imaging module. Among them, no "top surface of the lens barrel" structure is provided between the first lens part and the second lens part of the split optical lens to increase the adjustment range during the assembly process of the split lens.

[0010] Another object of the present application is to provide a split lens, its assembly method, and an imaging module. Among them, due to the absence of the "top surface of the lens barrel" structure, the design freedom of the structural area of the first optical lens of the first lens part and the topmost second optical lens of the second lens part is improved. Specifically, the thickness dimension of the structural area of the first optical lens and the topmost second optical lens can be increased, and the second optical lens with such a design is easier to demold. At the same time, the first lens part and the second lens part have a larger adjustment gap.

[0011] Another object of the present application is to provide a split lens, its assembly method, and an imaging module. Among them, the second lens part includes a second lens barrel and at least two second optical lenses installed in the second lens barrel. The upper surface of the topmost second optical lens is completely exposed at the top of the second lens barrel to form a structural configuration without a "top surface of the lens barrel" between the first lens part and the second lens part.

[0012] Another object of the present application is to provide a split lens, an assembly method thereof, and an imaging module. Since there is no "barrel top surface" structure provided between the first lens part and the second lens part, the height difference between the optical region and the structural region of the first optical lens of the first lens part can be designed to be larger. Thus, when the optical lens is assembled to the through hole of the display screen of the terminal device, the optical region of the first optical lens can be closer to the top of the through hole, so as to obtain a larger field of view angle and light transmission amount, thereby ensuring that the imaging module has a high imaging quality.

[0013] Another object of the present application is to provide a split lens, an assembly method thereof, and an imaging module. The second lens barrel includes a first bearing part and a second bearing part divided by a bearing structure provided inside the second lens barrel. Among them, part of the second optical lenses are installed on the first bearing part from the top of the second bearing part in a right-side-up manner, and the other part of the second optical lenses are installed on the second bearing part from the bottom of the second bearing part in an upside-down manner. In this way, the assembly accuracy and efficiency are improved.

[0014] Another object of the present application is to provide a split lens, an assembly method thereof, and an imaging module. The second optical lens located at the bottommost side in the first bearing part and the second optical lens located at the topmost side in the second bearing part are mutually engaged to improve the coaxiality of the optical axes of the first bearing part and the second bearing part.

[0015] Another object of the present application is to provide a split lens, an assembly method thereof, and an imaging module. The second optical lens in the second bearing part that abuts against the bearing structure includes a positioning protrusion protruding upward from its structural region. The positioning protrusion is formed at a specific position in the structural region so that when the second optical lens that abuts against the bearing structure is installed on the second bearing part, the positioning protrusion is engaged with the bearing structure. In this way, the installation positioning accuracy is improved.

[0016] Another object of the present application is to provide a split lens, an assembly method thereof, and an imaging module. The first optical light transmission of the first lens part includes an optical region and a structural region surrounding the optical region. The optical region includes a convex portion protruding and extending from the structural region. When the optical lens is assembled to the terminal device, the convex portion of the first optical lens is engaged with the through hole of the display screen of the terminal device so that the optical region of the first optical lens can be close to the top of the through hole to obtain a larger field of view angle and light transmission amount, thereby ensuring that the imaging module has a high imaging quality.

[0017] Another object of the present application is to provide a split lens, an assembly method thereof, and an imaging module. Among them, the protruding portion of the first optical lens has a relatively small lateral dimension, so that an opening in a display screen with a relatively small size is required, thereby being able to improve the "screen-to-body ratio" of the terminal device.

[0018] Another object of the present application is to provide a split lens, an assembly method thereof, and an imaging module. Among them, the first lens part is assembled to the second lens part by an active calibration method. In this way, the optical performance, assembly accuracy, and efficiency of the split lens are improved.

[0019] Through the following description, other advantages and features of the present application will become obvious and can be realized by the means and combinations specifically pointed out in the claims.

[0020] To achieve the above at least one object or advantage, the present application provides a split lens, which includes:

[0021] A first lens part including a first optical lens;

[0022] A second lens part, the second lens part includes a second lens barrel and at least two second optical lenses mounted on the second lens barrel. The second lens barrel includes a barrel body and a bearing structure provided inside the barrel body. The second lens barrel includes a first bearing part and a second bearing part divided by the bearing structure. Some of the second optical lenses are mounted on the first bearing part and other parts of the second optical lenses are mounted on the second bearing part. The upper surface of the topmost second optical lens is completely exposed at the top of the first bearing part;

[0023] Among them, there is an adjustment gap between the first lens part and the second lens part, and the first lens part is attached to the second lens part by an adhesive.

[0024] In the split lens according to the present application, the second bearing part has an inner diameter that increases from top to bottom, and other parts of the second optical lenses are mounted on the second bearing part from the bottom in an inverted manner.

[0025] In the split lens according to the present application, the first bearing part has an inner diameter that increases from top to bottom, and some of the second optical lenses are mounted on the first bearing part from the top in a right-side-up manner.

[0026] In the split lens according to the present application, the first bearing portion has a uniform inner diameter from top to bottom, and a part of the second optical lens is mounted on the first bearing portion from the top of the second bearing portion in an upright manner.

[0027] In the split lens according to the present application, the bearing structure is integrally formed on the inner side of the lens barrel body.

[0028] In the split lens according to the present application, the bearing structure is a prefabricated part and is installed on the inner side of the lens barrel body.

[0029] In the split lens according to the present application, an adhesive application space is formed between the side wall of the second optical lens located at the topmost side in the first bearing portion and the side wall of the first bearing portion. The split lens further includes an adhesive disposed in the adhesive application space, and the adhesive is used to fix a part of the second optical lens to the first bearing portion.

[0030] In the split lens according to the present application, the split lens further includes a positioning element that abuts against the second optical lens located at the bottommost side in the second bearing portion, and the positioning element is used to fix other parts of the second optical lens to the second bearing portion.

[0031] In the split lens according to the present application, the upper end surface of the first bearing portion is not higher than half of the height of the structural area of the first optical lens.

[0032] In the split lens according to the present application, the second optical lens that abuts against the bearing structure in the second bearing portion includes a positioning protrusion that protrudes upward from its structural area. Among them, the positioning protrusion is formed at a specific position in the structural area so that when the second optical lens that abuts against the bearing structure is mounted on the second bearing portion, the positioning protrusion is engaged with the bearing structure.

[0033] In the split lens according to the present application, a part of the second optical lenses among other parts of the second optical lenses are mutually engaged.

[0034] In the split lens according to the present application, a part of the second optical lenses among a part of the second optical lenses are mutually engaged.

[0035] In the split lens according to the present application, the second optical lens located at the bottommost side in the first bearing portion and the second optical lens located at the topmost side in the second bearing portion are mutually engaged.

[0036] In the split lens according to the present application, a light-shielding layer is provided on the non-optical area of the second optical lens located at the topmost side.

[0037] In the split lens according to the present application, the first optical lens includes a structural region and a protruding portion protruding upward from the structural region, and at least a part of the upper surface of the protruding portion forms the optical region of the first optical lens, wherein the highest point of the protruding portion protrudes at least 0.3 mm - 1.2 mm from the upper surface of the structural region.

[0038] In the split lens according to the present application, the lateral dimension of the protruding portion does not exceed 2.0 mm.

[0039] In the split lens according to the present application, the angle between the side wall of the protruding portion and the optical axis set by the split lens is less than 15°.

[0040] In the split lens according to the present application, the first optical lens is adhesively bonded to the structural region of the second optical lens located at the topmost side.

[0041] In the split lens according to the present application, the first lens portion further includes a first lens barrel for mounting the first optical lens, wherein the adhesive is applied between the first lens barrel and the second lens barrel and / or between the first lens barrel and the structural region of the second optical lens located at the topmost side and / or between the first optical lens and the structural region of the second optical lens located at the topmost side.

[0042] In the split lens according to the present application, the first optical lens is a plastic lens.

[0043] In the split lens according to the present application, the first optical lens is a glass lens.

[0044] In the split lens according to the present application, the refractive index Abbe number of the glass lens is 50 - 71.

[0045] In the split lens according to the present application, the refractive index of the glass lens is 1.48 - 1.55.

[0046] According to another aspect of the present application, the present application further provides an imaging module, including:

[0047] The split lens as described above; and

[0048] A photosensitive component, wherein the split lens is held on the photosensitive path of the photosensitive component.

[0049] In the imaging module according to the present application, the imaging module further includes a driving element, wherein the driving element is mounted on the photosensitive component, and the optical lens is mounted on the driving element.

[0050] According to another aspect of the present application, there is also provided an assembly method for a split lens, including:

[0051] Providing a second lens barrel, at least two second optical lenses, and a first lens portion including a first optical lens, wherein the second lens barrel includes a first bearing portion and a second bearing portion divided by a bearing structure protruding from the inner side of the second lens barrel;

[0052] Mounting some of the second optical lenses on the second bearing portion from the bottom of the second bearing portion in an upside-down manner from bottom to top;

[0053] Mounting the other second optical lenses on the first bearing portion from the top of the first bearing portion in an upright manner from top to bottom to form a second lens portion;

[0054] Pre-positioning the first lens portion, the second lens portion, and the photosensitive component along the optical axis direction;

[0055] Adjusting the relative positional relationship between the first lens portion and the second lens portion in an active calibration manner; and

[0056] Fixing the first lens portion to the second lens portion to form the split lens.

[0057] In the assembly method of the split lens according to the present application, the second optical lens in the second bearing portion that abuts against the bearing structure includes a positioning protrusion protruding upward from its structural area;

[0058] The step of mounting some of the at least two second optical lenses on the second bearing portion from the bottom of the second bearing portion in an upside-down manner from bottom to top includes:

[0059] Mounting the second optical lens that abuts against the bearing structure on the second bearing portion in such a manner that the positioning protrusion is engaged with the bearing structure.

[0060] Through the understanding of the following description and the drawings, the further objects and advantages of the present application will be fully reflected.

[0061] These and other objects, features, and advantages of the present application will be fully reflected through the following detailed description, drawings, and claims. Description of the Drawings

[0062] The above and other objects, features, and advantages of the present application will become more apparent by describing the embodiments of the present application in more detail with reference to the accompanying drawings. The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation to the present application. In the drawings, the same reference numerals generally represent the same components or steps.

[0063] Figure 1 The structural schematic diagram of the existing split lens is illustrated.

[0064] Figure 2 The schematic diagram of the split lens according to the embodiment of the present application is illustrated.

[0065] Figure 3 The schematic diagram of a variant implementation of the split lens according to the embodiment of the present application is illustrated.

[0066] Figure 4 The schematic diagram of another variant implementation of the split lens according to the embodiment of the present application is illustrated.

[0067] Figure 5 The schematic diagram of another variant implementation of the split lens according to the embodiment of the present application is illustrated.

[0068] Figures 6A to 6C The schematic diagram of the assembly process of the split lens according to the embodiment of the present application is illustrated.

[0069] Figure 7 The schematic diagram of the split lens assembled to the terminal device according to the embodiment of the present application is illustrated.

[0070] Figure 8 The schematic diagram of the camera module according to the embodiment of the present application is illustrated. Detailed implementation manners

[0071] Next, the exemplary embodiments according to the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. It should be understood that the present application is not limited by the exemplary embodiments described herein.

[0072] Exemplary split lens and its assembly process

[0073] As Figure 2As shown, the split lens 20 according to an embodiment of the present application is illustrated, where the split lens includes a plurality of lens parts. In particular, in the embodiment of the present application, it is taken as an example that the split lens 20 includes two lens parts, that is, the split lens 20 includes a first lens part 21 and a second lens part 22, and the first lens part 21 is assembled to the second lens part 22 to form the split lens 20.

[0074] As Figure 2 shown, in the embodiment of the present application, the first lens part 21 includes a first optical lens 211, and the second lens part 22 includes a second lens barrel 222 and at least two second optical lenses 221 mounted in the second lens barrel 222. Further, the second lens barrel 222 includes a barrel body 223 and a bearing structure 224 provided on the inner side of the barrel body 223 to divide the second lens barrel 222 into a first bearing part 225 and a second bearing part 226 through the bearing structure 224. That is to say, in the embodiment of the present application, the second lens barrel 222 includes a first bearing part 225 and a second bearing part 226 divided by the bearing structure 224 provided on the inner side of the second lens barrel 222, where part of the second optical lenses 221 are mounted in the first bearing part 225 and other part of the second optical lenses 221 are mounted in the second bearing part 226. That is to say, in the embodiment of the present application, the at least two second optical lenses 221 are divided into two groups of the second optical lenses 221, where the first group of the second optical lenses 221 are mounted in the first bearing part 225 and the second group of the second optical lenses 221 are mounted in the second bearing part 226.

[0075] In particular, in the embodiment of the present application, the bearing structure 224 is integrally formed on the inner side of the barrel body 223. That is to say, in the embodiment of the present application, the bearing structure 224 is a part of the second lens barrel 222. Of course, in other examples of the present application, the bearing structure 224 can also be implemented as a prefabricated part and mounted on the inner side of the barrel body 223 by means of gluing or the like. This is not limited by the present application.

[0076] It should be noted that due to such an installation method and structural configuration, after the at least two second optical lenses 221 are mounted in the second lens barrel 222, the upper surface of the second optical lens 221 located at the topmost side is completely exposed at the top of the first bearing part 225. That is to say, compared with the existing split lens, in the embodiment of the present application, there is no "barrel top surface" structure between the first lens part 21 and the second optical lens 221 adjacent thereto, so as to increase the adjustment range between the first lens part 21 and the second lens part 22.

[0077] More specifically, as Figure 2 shown, in the embodiment of the present application, the second bearing portion 226 has an inner diameter that increases from top to bottom, wherein the other part of the second optical lens 221 is mounted on the second bearing portion 226 from the bottom in an inverted manner. That is to say, in the embodiment of the present application, the second bearing portion 226 has a structure with a smaller upper part and a larger lower part, wherein the other part of the second optical lens 221 is inserted into the second bearing portion 226 from the bottom of the second barrel 222. Here, the upper direction of the second bearing portion 226 represents the direction of the second barrel 222 towards the object side, its lower direction represents the direction of the second barrel 222 towards the image side, and from top to bottom represents the direction from the object side towards the image side.

[0078] It should be understood that corresponding to the dimensional change of the second bearing portion 226, in the embodiment of the present application, the diameter of the other part of the second optical lens 221 gradually increases from top to bottom (of course, it may also include the case where the diameters of some of the second optical lenses 221 are equal). That is to say, in the second bearing portion 226, the diameter of the second optical lens 221 located on the upper side is not greater than the diameter of the second optical lens 221 located on the lower side. That is to say, in the embodiment of the present application, in the second bearing portion 226, the second optical lens 221 at the bottommost side has the largest diameter size.

[0079] Furthermore, as Figure 2 shown, in the embodiment of the present application, the bearing structure 224 has a downward bearing surface as the positioning and mounting surface for the other part of the second optical lens 221. In this way, during the process of inserting the other part of the second optical lens 221 into the second bearing portion 226 from the bottom of the second barrel 222, first, one piece of the second optical lens 221 is gradually inserted into the interior of the second bearing portion 226 and finally abuts against the bearing surface of the bearing structure 224. Then, the remaining other parts of the second optical lens 221 are gradually installed in the second bearing portion 226.

[0080] Furthermore, as Figure 2As shown, in the embodiment of the present application, the split lens 20 further includes a positioning element 227 that abuts against the second optical lens 221 at the bottommost side in the second bearing portion 226. The positioning element 227 is used to fix the other parts of the second optical lens 221 to the second bearing portion 226. It should be observable that the positioning element 227 abuts against the second optical lens 221 at the bottommost side in the second bearing portion 226 to confine the other parts of the second optical lens 221 between the positioning element 227 and the bearing structure 224. In a specific implementation, the positioning element 227 can be implemented as a retaining ring or the like, but the present application is not limited thereto.

[0081] In order to improve the installation accuracy of the other parts of the second optical lens 221 installed in the second bearing portion 226, in some examples of the present application, the structure of the second optical lens 221 that abuts against the bearing structure 224 in the second bearing portion 226 can also be optimized.

[0082] Specifically, Figure 3 The figure shows a schematic diagram of a variant implementation of the split lens 20 according to the embodiment of the present application. As Figure 3 shown, in this variant implementation, the second optical lens 221 that abuts against the bearing structure 224 in the second bearing portion 226 includes a positioning protrusion that protrudes upward from its structural area. In particular, the positioning protrusion is formed at a specific position in the structural area so that when the second optical lens 221 that abuts against the bearing structure 224 is installed in the second bearing portion 226, the positioning protrusion is adaptively engaged in the corner transition area between the bearing surface and the side wall of the bearing structure 224. In this way, the second optical lens 221 that abuts against the bearing structure 224 in the second bearing portion 226 is positioned. It should be understood that through such a positioning structure, the inclination angle between the second optical lens 221 that abuts against the bearing structure 224 in the second bearing portion 226 and the central axis set by the second lens barrel 222 can be effectively reduced, and the assembly accuracy of the other parts of the second optical lens 221 assembled in the second bearing portion 226 can be improved.

[0083] Furthermore, as Figure 2As shown, in the embodiment of the present application, the first bearing portion 225 has an inner diameter that increases from top to bottom, and a part of the second optical lens 221 is mounted on the first bearing portion 225 from the top of the second bearing portion 226 in an upright manner. That is to say, in the embodiment of the present application, the first bearing portion 225 has a structure with a smaller upper part and a larger lower part, wherein a part of the second optical lens 221 is inserted into the first bearing portion 225 from the top of the second lens barrel 222. Here, the upper direction of the first bearing portion 225 represents the object side direction of the second lens barrel 222, its lower direction represents the image side direction of the second lens barrel 222, and from top to bottom represents the direction from the object side to the image side.

[0084] It should be understood that corresponding to the dimensional change of the first bearing portion 225, in the embodiment of the present application, the diameter of a part of the second optical lens 221 gradually decreases from top to bottom (of course, there may be a situation where the diameters of some of the second optical lenses 221 are equal). That is to say, in the first bearing portion 225, the diameter of the second optical lens 221 located on the upper side is not less than the diameter of the second optical lens 221 located on the lower side. That is to say, in the embodiment of the present application, in the first bearing portion 225, the second optical lens 221 at the bottommost side has the smallest diameter size.

[0085] It is worth mentioning that in other possible implementation manners of the present application, the first bearing portion 225 may be configured to have a uniform inner diameter from top to bottom, that is, the first bearing portion 225 has a uniform structure, which is not limited to the present application.

[0086] As Figure 6A and 6B shown, during the process of assembling the second optical lens 221 and the second lens barrel 222 to form the second lens portion 22, preferably, other parts of the second optical lens 221 are first mounted on the second bearing portion 226. In this way, during the process of inserting a part of the second optical lens 221 into the first bearing portion 225 from the top of the second lens barrel 222, the second optical lens 221 can gradually penetrate to the bottom of the first bearing portion 225 and finally rest on the upper surface of the second optical lens 221 that abuts against the bearing structure 224 in the second bearing portion 226. That is to say, in the embodiment of the present application, the second optical lens 221 that abuts against the bearing structure 224 in the second bearing portion 226 provides a positioning and mounting surface for a part of the second optical lens 221 to be inserted into the first bearing portion 225.

[0087] Furthermore, as Figure 2As shown, in the embodiment of the present application, there is a gap between the side wall of the second optical lens 221 at the topmost side in the first carrying part 225 and the side wall of the first carrying part 225 to form an adhesive application space 2210. Among them, the adhesive application space 2210 is used to apply an adhesive 23, and the adhesive 23 is used to fix a part of the second optical lens 221 to the first carrying part 225. Of course, in other examples of the present application, a part of the second optical lens 221 can also be fixed in the first carrying part 225 by other means. For example, by a retaining ring, which is not limited to the present application.

[0088] It is worth mentioning that in other examples of the present application, a part of the second optical lens 221 can also be first installed in the first carrying part 225, and then other parts of the second optical lens 221 can be installed in the second carrying part 226. To implement this assembly method, some deformations need to be made to the carrying structure 224. Specifically, Figure 5 The figure shows a schematic diagram of another deformed implementation of the split lens 20 according to the embodiment of the present application, as Figure 5 shown. In this deformed embodiment, the carrying structure 224 has a support base 2240 extending outward to support and position a part of the second optical lens 221 that is inserted into the first carrying part 225 from the top of the second lens barrel 222; after a part of the second optical lens 221 is installed in the first carrying part 225, other parts of the second optical lens 221 are further installed in the second carrying part 226, where the second optical lens 221 in contact with the carrying structure 224 fits against the lower surface of the support base 2240. This is not limited to the present application.

[0089] Specifically, in order to improve the assembly accuracy of the second lens part 22, in the embodiment of the present application, a part of the second optical lenses 221 in the first carrying part 225 can be set to an interlocking structure. Of course, a part of the second optical lenses 221 in other parts of the second optical lenses 221 in the second carrying part 226 can also be interlocked. Particularly preferably, in the embodiment of the present application, the second optical lens 221 at the bottommost side in the first carrying part 225 and the second optical lens 221 at the topmost side in the second carrying part 226 can be set to an interlocking structure so that the optical axes of the second optical lens 221 at the bottommost side in the first carrying part 225 and the second optical lens 221 at the topmost side in the second carrying part 226 are aligned.

[0090] It is worth mentioning that, in the embodiment of the present application, after assembling the at least two second optical lenses 221 on the second lens barrel 222 to form the second lens part 22, a light-shielding layer (not shown in the figure) can be further provided 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, a light-shielding layer can also be provided on the non-optical area of the second optical lens 221 located at the topmost side before assembly, and this is not limited by the present application. It is worth mentioning that, in other examples of the present application, the light-shielding layer can also be prepared from other materials. For example, the light-shielding layer can be formed by attaching a SOMA sheet to the non-optical area of the first optical lens 211, and this is not limited by the present application.

[0091] It is worth mentioning that, in the embodiment of the present application, the first lens part 21 is implemented as a "bare lens", that is, the first lens part 21 only includes the first optical lens 211. In other words, in the embodiment of the present application, when assembling the first lens part 21 on the second lens part 22, the first optical lens 211 of the first lens part 21 is directly attached to the second lens part 22, so that the determination of the relative position relationship between the first optical lens 211 and the second 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 part 21 can also include a first lens barrel 212 (as Figure 4 shown) for mounting the first optical lens 211, and this is not limited by the present application.

[0092] It is worth mentioning that, in the embodiment of the present application, the upper end surface of the second lens barrel 222 (that is, the upper end surface of the first bearing part 225) can be lower than the highest point of the upper surface of the second optical lens 221 located at the topmost side, or higher than or equal to the highest point of the upper surface of the second optical lens 221 located at the topmost side. However, when the first lens part 21 is implemented as a "bare lens", the upper end surface of the second lens barrel 222 is not higher than half of the height of the structural area of the first optical lens 211. The reason is that during the assembly process of the split lens, it is necessary to clamp the first optical lens 211. When the first lens part 21 only includes the first optical lens 211, the height of the structural area of the first optical lens 211 needs to be higher than half of the upper end surface of the second lens barrel 222, so that the position of the first optical lens 211 relative to the second optical lens located at the topmost side can be adjusted. Moreover, the clamping tool can clamp at a relatively more middle position of the first optical lens 211, reducing the damage caused by the clamping tool to the first optical lens 211 and preventing the first optical lens 211 from generating adverse deformations.

[0093] Furthermore, as Figure 2 shown, in the embodiment of the present application, the split lens 20 has a structural configuration of a "small head". 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 convex portion 214 that protrudes upwardly from the structural region 213 to form a structural configuration of a "small head". In particular, in the embodiment of the present application, at least a part of the upper surface of the convex portion 214 forms the optical region 212 of the first optical lens 211. Here, the optical region 212 represents the part of the first optical lens 211 that participates in light transmission and imaging. Correspondingly, the non-optical region of the first optical lens 211 represents the part of the first optical lens 211 that does not participate in light transmission and imaging, which includes the structural region 213 and the part of the convex portion 214 that does not participate in light transmission and imaging.

[0094] As described above, in the prior art, the "barrel top surface" structure raises the mounting base surface of the first optical lens 11, affecting the design of the upward extension height of the first optical lens 11. This effect is particularly evident when assembling the split lens into a terminal device (e.g., a smart phone). Specifically, when assembling the split lens into a terminal device, the first optical lens 11 of the split lens needs to extend into the screen opening. To ensure that the field of view angle of the split lens is not restricted by the screen opening and at the same time minimize the opening size as much as possible, it is necessary to make the optical region of the first optical lens 11 more prominent than the non-optical region. However, the existence of the "barrel top surface" structure limits the degree of prominence of the optical region of the first optical lens 11 relative to the non-optical region.

[0095] Correspondingly, in the embodiment of the present application, through the structural configuration of the "small head" of the split lens 20, the optical region 212 of the first optical lens 211 can be relatively more prominent than its structural region 213. Thus, when the split lens 20 is assembled into a terminal device in such a way that the first optical lens 211 is fitted into the through hole of the display screen of the terminal device, the optical region 212 of the first optical lens 211 can be closer to the top of the through hole, enabling a larger field of view angle and light transmission amount to be obtained under a smaller screen opening, thereby ensuring that the imaging module has a high imaging quality, as Figure 7 shown.

[0096] Specifically, in the embodiments of the present application, the angle between the side wall of the convex portion 214 and the optical axis set by the split lens 20 is less than 15°. Preferably, in the embodiments of the present application, the side wall is substantially parallel to the optical axis. More preferably, in the embodiments of the present application, while the side wall of the convex portion 214 is substantially parallel to the optical axis, it is also substantially perpendicular to the upper surface of the structural area 213, so that the transition area between the convex portion 214 and the structural area 213 forms an "L" shaped structure. It should be noted that in specific implementations, limited by the processing technology, the side wall of the convex portion 214 cannot be completely parallel to the optical axis and completely perpendicular to the upper surface of the structural area 213. The descriptions of substantially perpendicular and substantially parallel are used to describe the standards in structural design and processing. Preferably, the upper surface of the convex portion 214 is implemented as a convex surface type.

[0097] As described above, in the existing split lens, due to the existence of the "barrel top surface" structure between the first optical lens 211 and the second optical lens 221, the mounting base surface of the first optical lens 211 is raised, resulting in an impact on the height design of the upward extension of the first optical lens 211. In contrast, in the embodiments of the present application, this "barrel top surface" structure is cancelled. When designing the height, the height difference between the optical area 212 of the first optical lens 211 and the structural area 213 can be further increased, so that when the split lens 20 is assembled into 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, in order to obtain a larger field of view angle and light transmission amount, thereby ensuring that the imaging module has a high imaging quality.

[0098] Particularly, in the embodiments of the present application, the highest point of the convex portion 214 protrudes at least 0.3 - 1.2 mm from the lower surface of the structural area 213. That is to say, in the embodiments of the present application, the distance between the highest point of the convex portion 214 and the upper surface of the structural area 213 is at least 0.3 - 1.2 mm. At the same time, the total height of the first optical lens 211 is 0.4 - 1.6 mm. Preferably, the total height of the first optical lens 211 is 0.9 - 1.6 mm. And, preferably, the lateral dimension of the convex portion does not exceed 2.0 mm.

[0099] In order to further increase the height difference between the optical area 212 of the first optical lens 211 and the structural area 213, in some examples of the present application, the topmost second optical lens 221 includes a mounting platform (not shown in the figure) formed recessedly on the upper end surface of the second optical lens 221, and the mounting platform is configured to mount the first optical lens 211 thereon.

[0100] In a specific implementation, the first optical lens 211 can be implemented as a plastic lens, which can be formed by plastic injection molding (alternatively, in some specific processes, the plastic lens after injection molding is further polished to cut or grind out the required shape). Of course, in other examples of this application, the first optical lens 211 can also be implemented as a glass lens, which can be prepared by the glass molding process and can be further cut or ground into the required shape. In particular, in the embodiment of this application, the distance from the highest point of the convex portion 214 of the first optical lens 211 to the upper surface of the structure region 213 is at least 0.3 - 1.2 mm, and the total height of the first optical lens 211 is 0.4 - 1.6 mm. That is to say, the thickness dimension of the first optical lens 211 is relatively large, resulting in a relatively low light transmittance of the first optical lens 211. Therefore, using a glass material with a higher light transmittance can reduce the impact of the relatively large thickness of the first optical lens 211 on the light transmittance.

[0101] Specifically, the forming principle of glass molding is as follows: Place the glass preform with an initial shape in a precision machining and forming mold, raise the temperature to soften the glass, and then apply pressure on the surface of the mold to make the glass deform under force and remove it from the mold to form the required lens shape. Since the first optical lens 211 is an aspherical lens and glass molding requires using a mold to apply pressure to the glass for processing, manufacturing a double-concave lens by glass molding causes relatively large damage to the mold. Therefore, the upper surface of the first optical lens 211 is preferably convex. At the same time, since glass molding is manufactured through a forming mold, there may be a relatively large inclination angle between the side wall of the convex portion 214 of the first optical lens 211 after glass molding and the optical axis. At this time, the first optical lens 211 can be ground by cold processing technology 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°.

[0102] It is worth mentioning that when the first optical lens 211 is implemented as a glass lens, the refractive index of the glass for light transmission is preferably 1.48 - 1.55, and its refractive index Abbe number is preferably 50 - 71. In this way, the split lens 20 has a relatively high imaging quality (for example, chromatic aberration and other aberrations are well controlled within a certain range). At the same time, selecting a glass material can have a better temperature drift.

[0103] Furthermore, in the embodiment of this application, the first lens portion 21 is assembled to the second lens portion 22 by an active calibration method (Active Optical Alignment, AOA).

[0104] Specifically, the assembly process first includes: providing the first lens portion 21 and the second lens portion 22; then, pre-positioning the first lens portion 21, the second lens portion 22, and the photosensitive component along the optical axis direction; then, further adjusting the relative positional relationship between the first lens portion 21 and the second lens portion 22 in an active calibration manner; finally, fixing the first lens portion 21 to the second lens portion 22 to form the split lens 20.

[0105] 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:

[0106] Based on the imaging quality of the images acquired by the imaging system composed of the first optical lens 211, the second lens portion 22, and the photosensitive component, adjusting the relative positional relationship between the first lens portion 21 and the second lens portion 22.

[0107] Specifically, first, the photosensitive component cooperates with the split optical lens to obtain an image of the measured target. Then, the forming quality and adjustment amount of the split lens 20 are calculated by image imaging quality calculation methods such as SFR and MTF. Then, according to the adjustment amount, the relative positional relationship between the first lens portion 21 and the second lens portion 22 is adjusted in at least one direction (at least one direction refers to the xyz directions and the directions of rotation around the xyz axes) in real time, so that the imaging quality of the split lens 20 (mainly including optical parameters such as peak value, field curvature, and astigmatism) reaches a preset threshold after one or multiple adjustments.

[0108] In the embodiment of the present application, the first lens part 21 has a structural configuration of a "bare lens", which only includes the first optical lens 211. Correspondingly, the process of fixing the first lens part 21 to the second lens part 22 to form the split lens 20 includes: First, apply an adhesive 23 between the first optical lens 211 and the topmost second optical lens 221; then, cure the adhesive 23 to fixedly attach the first optical lens 211 to the topmost second optical lens 221, thereby fixing the first lens part 21 to the second lens part 22. In particular, in the embodiment of the present application, the adhesive 23 can be cured by thermal curing or photo-curing, that is, the adhesive 23 contains photo-curing components or thermal-curing components. It is worth mentioning that in the embodiment of the present application, the step of applying the adhesive 23 can also be carried out after active calibration, that is, after completing the imaging quality correction of the split lens 20, move the first lens part 21 away, and then apply the adhesive 23 at the corresponding position of the second lens part 22. This is not limited to the present application.

[0109] Correspondingly, when assembling the first lens part 21 to the second lens part 22 by active calibration to form the split lens 20, as Figure 2 shown, 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 through the adhesive 23. That is to say, in the embodiment of the present application, the bonding position between the first lens part 21 and the second lens part 22 is set between the first optical lens 211 and the topmost second optical lens 221. Of course, in other examples of the present application, this bonding position can also be set at other positions, for example, between the first optical lens 211 and the second lens barrel 222; between the first optical lens 211, the topmost second optical lens 221 and the second lens barrel 222. This is not limited to the present application. And preferably, the adhesive 23 includes a glue material of light-impermeable material to increase the effect of preventing stray light (stray light may come from external light or the light emitted by the display screen itself after refraction or reflection).

[0110] Those of ordinary skill in the art should understand that when the split lens 20 is implemented as Figure 4When schematically showing the split lens 20, that is, the first lens part 21 further includes a first lens barrel 212 for housing the first optical lens 211. Correspondingly, the first lens part 21 is attached to the second lens part 22 by an active calibration method through an adhesive 23. Wherein, the bonding position can be set between the first lens barrel 212 and the second lens barrel 222, or between the first optical lens 211 and the topmost second optical lens 221, or between the first optical lens 211, the topmost second optical lens 221, the first lens barrel 212 and the second lens barrel 222. However, this is not limited to the present application.

[0111] In summary, based on the split lens and its assembly process of the embodiments of the present application, the "top surface of the lens barrel" structure of the first lens part 21 and the second lens part 22 is cancelled, so that on the one hand, the adjustment range of the split lens 20 becomes larger; on the other hand, the influence of the "top surface of the lens barrel" structure on the optical design of the first optical lens 211 (especially the height design) is eliminated, so that the optical region 212 of the first optical lens 211 can protrude relatively more from its structural region 213. When the split lens 20 is assembled to the terminal device in such a way that the first optical lens 211 is fitted into the through hole of the display screen of the terminal device, the optical region 212 of the first optical lens 211 can be closer to the top of the through hole to obtain a larger field of view and light transmission.

[0112] 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 part 21 can include more optical lenses, and the second lens part 22 can include fewer optical lenses. For example, the first lens part 21 can include the first optical lens 211 and at least part of the second optical lenses 221, the second lens part 22 includes the other remaining second optical lenses 221, and the topmost second optical lens 221 is also exposed at the top of the second lens part 22.

[0113] And, in other examples of the present application, the split lens 20 further includes a larger number of lens parts. For example, the split lens 20 can include three lens parts: a first lens part 21, a second lens part 22 and a third lens part (not shown in the figure), and the first lens part 21, the second lens part 22 and the third lens part are assembled by an active calibration method to ensure the assembly accuracy and yield.

[0114] Assembly method of a schematic split lens

[0115] Figures 6A to 6CThe figure shows a schematic diagram of the assembly process of the split lens according to an embodiment of the present application. As Figures 6A to 6C shown, in the embodiment of the present application, the assembly process of the split lens 20 includes:

[0116] First, provide a second lens barrel 222, at least two second optical lenses 221, and a first lens portion 21 including a first optical lens 211. Among them, the second lens barrel 222 includes a first bearing portion 225 and a second bearing portion 226 divided by a bearing structure 224 protruding from the inner side of the second lens barrel 222;

[0117] Then, install some of the second optical lenses 221 on the second bearing portion 226 from the bottom of the second bearing portion 226 in an upside-down manner from bottom to top;

[0118] Next, install the other second optical lenses 221 on the first bearing portion 225 from the top of the first bearing portion 225 in a right-side-up manner from top to bottom to form a second lens portion 22;

[0119] Subsequently, pre-position the first lens portion 21, the second lens portion 22, and the photosensitive component along the optical axis direction;

[0120] Then, adjust the relative positional relationship between the first lens portion 21 and the second lens portion 22 in an active calibration manner; and

[0121] Finally, fix the first lens portion 21 to the second lens portion 22 to form the split lens 20.

[0122] In the embodiment of the application, the second optical lens 221 in the second bearing portion 226 that abuts against the bearing structure 224 includes a positioning protrusion protruding upward from its structural area 213. Correspondingly, in the step of installing some of the second optical lenses 221 on the second bearing portion 226 from the bottom of the second bearing portion 226 in an upside-down manner from bottom to top, it includes:

[0123] Install the second optical lens 221 that abuts against the bearing structure 224 on the second bearing portion 226 in such a way that the positioning protrusion is engaged with the bearing structure 224.

[0124] 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:

[0125] Adjust the relative positional relationship between the first lens part 21 and the second lens part 22 based on the imaging quality of the image acquired by the imaging system constituted by the first optical lens 211, the second lens part 22, and the photosensitive component.

[0126] Specifically, first, the photosensitive component cooperates with the split optical lens to obtain an image of the target to be measured. Furthermore, the forming quality and adjustment amount of the split lens 20 are calculated by image imaging quality calculation methods such as SFR and MTF. Then, according to the adjustment amount, the relative positional relationship between the first lens part 21 and the second lens part 22 is adjusted in at least one direction (at least one direction refers to the xyz directions and the directions of rotation around the xyz axes) in real time, so that after one or multiple adjustments, the imaging quality of the split lens 20 (mainly including optical parameters such as peak value, field curvature, and astigmatism) reaches a preset threshold.

[0127] In summary, the assembly method of the split lens 20 based on the embodiments of the present application is clarified, and it can assemble the split lens 20 and its variant embodiments as described above.

[0128] Schematic imaging module

[0129] As Figure 8 shown, the camera module based on the embodiments of the present application is clarified. Among them, the camera module 10 includes the split lens 20 and the photosensitive component 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 to meet the user's needs such as selfies. In the embodiments of the present application, the terminal device includes but is not limited to smartphones, tablets, wearable devices, etc. Of course, in other application examples, the camera module 10 can also be configured as a rear camera module, and this is not limited by the present application.

[0130] In the embodiments of the present application, the camera module 10 includes the split lens 20 and the photosensitive component 30 as described above. Among them, the split lens 20 is held in the light-sensing path of the photosensitive component 30, so that the light collected by the split lens 20 can be imaged in the photosensitive component 30 along this light-sensing path. Those of ordinary skill in the art should know that the photosensitive component 30 includes components such as a circuit board 31, a photosensitive chip 32 electrically connected to the circuit board 31, at least one electronic component 32 provided on the circuit board 31, and a package 33 provided on the circuit board 31. Among them, the split lens 20 is mounted on the package 33 (of course, the photosensitive component may also include other necessary elements, such as a filter element, etc.).

[0131] It should be noted that as Figure 8The camera module 10 shown is a fixed-focus camera module. Those skilled in the art should know that the camera module 10 involved in the present application can also be implemented as a dynamic-focus camera module, that is, the camera module 10 also includes a driving element (not shown in the figure) disposed between the split lens 20 and the photosensitive component 30, so that the split lens 10 is carried by the driving element to move along the photosensitive path to change the distance between the split lens 10 and the photosensitive component 30. Of course, the camera module 10 involved in the present application can also be implemented as an optical image stabilization camera module, that is, the camera module 10 also includes an anti-shake motor (not shown in the figure) disposed between the split lens 20 and the photosensitive component 30, so that the anti-shake motor can eliminate the influence of inadvertent shaking on the image quality during shooting.

[0132] In particular, in the embodiment of the present application, the split lens 20 has a "small head" structural configuration, so that when the split lens 20 is assembled in the terminal device in a manner of being embedded in the through hole of the display screen of the terminal device, the optical area 212 of the split lens 20 can be closer to the top of the through hole to obtain a larger field of view and light throughput, thereby ensuring that the camera module 10 has a higher imaging quality, such as Figure 7 shown.

[0133] It is worth mentioning that in Figure 8 In the camera module shown in the figure, although the split lens 20 is Figure 2 The split lens 20 shown is an example, and a person skilled in the art should understand that various deformations of the split lens 20 disclosed in the present application and combinations of deformations thereof can be combined with the photosensitive component 30 to form the camera module 10. This is not limited to the present application.

[0134] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A split lens, characterized in that, Comprising: A first lens portion including a first optical lens; A second lens portion, the second lens portion including a second lens barrel and at least two second optical lenses mounted on the second lens barrel, the second lens barrel including a barrel main body and a bearing structure disposed inside the barrel main body, the second lens barrel including a first bearing portion and a second bearing portion divided by the bearing structure, some of the second optical lenses being mounted on the first bearing portion and other of the second optical lenses being mounted on the second bearing portion, the upper surface of the topmost second optical lens being completely exposed at the top of the first bearing portion; Wherein, there is an adjustment gap 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; Wherein, the first optical lens is bonded by an adhesive to a structural area of the topmost second optical lens; the upper end surface of the first bearing portion is not higher than half of the height of the structural area of the first optical lens.

2. The split lens according to claim 1, wherein, The second bearing portion has an inner diameter that increases from top to bottom, and other of the second optical lenses are mounted on the second bearing portion from the bottom of the second bearing portion in an inverted manner.

3. The split lens according to claim 2, wherein, The first bearing portion has an inner diameter that decreases from top to bottom, and some of the second optical lenses are mounted on the first bearing portion from the top of the second bearing portion in an upright manner.

4. The split lens according to claim 2, wherein, The first bearing portion has a uniform inner diameter from top to bottom, and some of the second optical lenses are mounted on the first bearing portion from the top of the second bearing portion in an upright manner.

5. The split lens according to claim 3 or 4, wherein, The bearing structure is integrally formed inside the barrel main body.

6. The split lens according to claim 3 or 4, wherein, The bearing structure is a prefabricated part and is mounted inside the barrel main body.

7. The split lens according to claim 3 or 4, wherein A glue application space is formed between the side wall of the topmost second optical lens in the first bearing portion and the side wall of the first bearing portion; the split lens further includes an adhesive disposed in the glue application space, and the adhesive is used to fix some of the second optical lenses to the first bearing portion.

8. The split lens according to claim 2, further comprising: A positioning element abuts against the lowermost second optical lens in the second bearing portion, and the positioning element is used to fix other of the second optical lenses to the second bearing portion.

9. The split lens according to claim 2, wherein, The second optical lens in the second bearing portion that abuts against the bearing structure includes a positioning protrusion protruding upward from its structural area, and the positioning protrusion is formed at a specific position in the structural area so that when the second optical lens that abuts against the bearing structure is mounted on the second bearing portion, the positioning protrusion is engaged with the bearing structure.

10. The split lens according to claim 2, wherein, Some of the other second optical lenses are mutually fitted.

11. The split lens according to claim 3 or 4, wherein, Some of the second optical lenses are mutually fitted.

12. The split lens according to claim 3 or 4, wherein, The lowermost second optical lens in the first bearing portion and the topmost second optical lens in the second bearing portion are mutually fitted.

13. The split lens according to claim 1, wherein, The first optical lens includes a structural region and a convex portion protruding upward from the structural region, and at least a part of the upper surface of the convex portion forms the optical region of the first optical lens, wherein the highest point of the convex portion protrudes at least 0.3 mm - 1.2 mm from the upper surface of the structural region.

14. The split lens according to claim 13, wherein, The lateral dimension of the convex portion does not exceed 2.0 mm.

15. The split lens according to claim 14, wherein, The angle between the side wall of the convex portion and the optical axis set by the split lens is less than 15°.

16. An imaging module, characterized in that, Comprising: The split lens according to any one of claims 1 - 15; And A photosensitive component, wherein the split lens is held on the photosensitive path of the photosensitive component.

17. An assembling method for a split lens, characterized in that Comprising: Providing a second lens barrel, at least two second optical lenses, and a first lens part including the first optical lens, the second lens barrel including a first bearing part and a second bearing part divided by a bearing structure prominently provided inside the second lens barrel; Mounting some of the second optical lenses on the second bearing part from the bottom of the second bearing part in an upside - down manner from bottom to top; The second bearing part has an inner diameter that increases from top to bottom; Mounting the other part of the second optical lenses on the first bearing part from the top of the first bearing part in a right - side - up manner from top to bottom to form a second lens part, such that the second optical lenses gradually penetrate into the bottom of the first bearing part and finally rest against the upper surface of the second optical lens in the second bearing part that abuts against the bearing structure; the upper surface of the top - most second optical lens is completely exposed at the top of the first bearing part; Pre - positioning the first lens part, the second lens part, and the photosensitive component along the optical axis direction; Adjusting the relative positional relationship between the first lens part and the second lens part in an actively calibrated manner; And Fixing the first lens part to the second lens part to form the split lens; wherein, an adhesive is applied between the first optical lens and the top - most second optical lens; further, by curing the adhesive, the first optical lens is fixedly attached to the top - most second optical lens, thereby fixing the first lens part to the second lens part; the upper end surface of the first bearing part is not higher than half of the height of the structural region of the first optical lens.

18. The assembling method according to claim 17, wherein, The second optical lens in the second bearing part that abuts against the bearing structure includes a positioning protrusion protruding upward from its structural region; The step of mounting some of the second optical lenses on the second bearing part from the bottom of the second bearing part in an upside - down manner from bottom to top includes: Mounting the second optical lens that abuts against the bearing structure on the second bearing part in such a way that the positioning protrusion is engaged with the bearing structure.

Images