WO2022068442A1

WO2022068442A1 - Periscopic camera module, and method for assembling lens block of periscopic camera module

Info

Publication number: WO2022068442A1
Application number: PCT/CN2021/112982
Authority: WO
Inventors: 梅哲文; 周秀秀; 叶林敏; 熊实
Original assignee: 宁波舜宇光电信息有限公司
Priority date: 2020-09-30
Filing date: 2021-08-17
Publication date: 2022-04-07
Also published as: CN114326259A; CN116134360A; CN114326259B

Abstract

A periscopic camera module, a lens block (30), and a method for assembling the lens block (30). The lens block (30) comprises an optical lens (31), a lens carrier (32), and a limiting device (33). The lens carrier (32) has a mounting cavity (320) and an opening (321) formed in a top region of the lens carrier (32) such that the optical lens (31) is adapted to be mounted in the mounting cavity (320) from the top of the lens carrier (32) through the opening (321). The limiting device (33) comprises a first limiting mechanism (331) and a second limiting mechanism (332); the first limiting mechanism (331) is provided between the lens carrier (32) and the optical lens (31) to limit the optical lens (31) to move along an optical axis; and the second limiting mechanism (332) is provided on the lens carrier (32) and the inner surface of the second limiting mechanism (332) is adapted to abut against the upper surface of the optical lens (31) to limit the optical lens (31) to move toward the opening (321), thereby securely holding the optical lens (31) within the mounting cavity (320) of the lens carrier (32).

Description

Periscope camera module and assembly method of lens module

technical field

The present application relates to the field of camera modules, and in particular, to a periscope camera module and a method for assembling a lens module thereof, wherein, during the process of assembling the lens module, other limiting mechanisms are used to position and limit the optical lens relative to the The relative position of the lens carrier to reduce (or even not need) the amount of adhesive applied for fixing the optical lens to the lens carrier, thereby reducing (or even avoiding) the relative position of the optical lens due to the curing shrinkage of the adhesive. The relative position of the lens carrier is shifted and/or the optical lens inside the optical lens is deformed.

Background technique

With the popularization of mobile electronic devices, the related technologies of camera modules used in mobile electronic devices to help users acquire images (eg, videos or images) have been rapidly developed and advanced. Especially with the development of smartphones, consumers' pursuit of shooting functions has become more and more diversified, and the requirements for image quality have become higher and higher. need.

In order to realize the telephoto function, mobile electronic devices have begun to introduce camera modules with telephoto lenses, and in order to avoid the long optical total length of the telephoto lenses, the size of the camera modules is too large, which is not in line with the development trend of miniaturization of electronic equipment. , usually a prism or a mirror is used to fold the optical path of the camera module, so that the camera module can be placed horizontally in the electronic device. This camera module is called a "periscope camera module".

In order to improve the performance of the periscope camera module, the periscope camera module further includes a motor for moving the optical lens, so as to realize functions such as optical image stabilization, auto focus or optical zoom. In the existing periscope camera module, for example, in the periscope camera module disclosed in Chinese Patents CN201920034728.4 and CN201910770361.7, it includes a U-shaped carrier for carrying an optical lens, and the optical lens is Installed in the U-shaped carrier, the motor drives the U-shaped carrier to move to realize the above-mentioned optical adjustment function.

During the assembly process, the optical lens is installed into the U-shaped carrier from the direction in which the light enters the periscope camera module, and the lens is fixed in the U-shaped carrier by a large amount of glue. However, the large amount of glue arrangement seriously affects the performance of the optical lens itself and the stability of the position of the lens in the periscope camera module, resulting in a serious degradation of the imaging quality of the periscope camera module.

Therefore, an optimized structural design scheme and packaging scheme of the periscope camera module are required.

SUMMARY OF THE INVENTION

An advantage of the present application is to provide a periscope camera module and a method for assembling the lens module thereof, wherein during the process of assembling the lens module, other limiting mechanisms are used to position and limit the optical lens relative to the lens The relative position of the carrier to reduce (even do not need) the amount of adhesive applied for fixing the optical lens to the lens carrier, thereby reducing (or even avoiding) the relative position of the optical lens due to the curing shrinkage of the adhesive. The relative position of the lens carrier is shifted and/or the optical lens inside the optical lens is deformed.

Another advantage of the present application is to provide a periscope camera module and a method for assembling the lens module thereof, wherein, in the process of assembling the lens module, an adhesive with an elastic modulus smaller than that of the lens barrel is used to reduce the The effect of the adhesive on the lens barrel.

Another advantage of the present application is to provide a periscope camera module and a method for assembling a lens module thereof, wherein, in the lens module, the six degrees of freedom of the optical lens relative to the lens carrier are all controlled by The limiting device is constrained so that the optical lens is stably positioned and limited in the lens carrier, so as to ensure the imaging quality of the periscope camera module.

Another advantage of the present application is to provide a periscope camera module and a method for assembling the lens module thereof, wherein, in the method for assembling the lens module, the optical lens is positioned in X and Y relative to the lens carrier. The degree of freedom in the direction is constrained by the first limit mechanism, and the degree of freedom of the optical lens relative to the lens carrier in the Z direction is constrained by the second limit mechanism. In this way, the The optical lens is stably positioned and limited in the lens carrier to ensure the imaging quality of the periscope camera module.

Other advantages and features of the application will become apparent from the description below 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 advantages, the present application provides a periscope camera module, which includes:

A light-reflecting module, including a light-reflecting unit for bending imaging light;

Corresponding to the lens module of the light turning module, the lens module is provided with an optical axis along the length direction of the periscope camera module, wherein the lens module includes: an optical lens, a lens carrier and a limiter A device, the lens carrier has a mounting cavity and an opening formed in a top area of the lens carrier, the opening communicates with the mounting cavity, so that the optical lens can be adapted from the lens carrier through the opening The top is installed into the installation cavity; wherein, the limiting device includes a first limiting mechanism and a second limiting mechanism, and the first limiting mechanism is arranged between the lens carrier and the optical lens, for restricting the movement of the optical lens along the optical axis; the second limiting mechanism is arranged on the lens carrier and the inner surface of the second limiting mechanism is adapted to abut against the upper surface of the optical lens a surface for restricting movement of the optical lens toward the opening such that the optical lens is retained within the mounting cavity; and

A photosensitive module corresponding to the lens module, wherein the photosensitive module includes a photosensitive unit for imaging.

In the above-mentioned periscope camera module, the first limiting mechanism includes at least one protrusion formed protrudingly on the inner surface of the lens carrier and at least one concave formed concavely on the outer surface of the optical lens a groove, wherein when the optical lens is installed in the installation cavity from the opening, the at least one protrusion is engaged with the at least one groove, and in this way, the optical lens is restricted move along the optical axis.

In the above-mentioned periscope camera module, the first limiting mechanism includes at least one groove formed concavely on the inner surface of the lens carrier and at least one convex formed protrudingly on the outer surface of the optical lens From the above, when the optical lens is installed in the installation cavity from the opening, the at least one protrusion is engaged with the at least one groove, and in this way, the optical lens is limited move along the optical axis.

In the above-mentioned periscope camera module, the at least one protrusion and the at least one groove are formed in the first part of the lens carrier that is close to the light-emitting side of the optical lens.

In the above-mentioned periscope camera module, the first limiting mechanism is implemented as an adhesive, and the elastic modulus of the adhesive is less than 1.2 GPa.

In the above-mentioned periscope camera module, the limiting device further includes an adhesive disposed between the lens carrier and the optical lens, and the elastic modulus of the adhesive is less than or equal to 1.2 GPa.

In the above-mentioned periscope camera module, the adhesive is arranged on the first part of the lens carrier that is close to the light-emitting side of the optical lens.

In the above-mentioned periscope camera module, the lens carrier includes a carrier base and a first holding arm and a second holding arm that are bent and extended upward on the carrier base, the first holding arm and the second holding arm and the carrier base to form the mounting cavity and the opening; wherein the adhesive is disposed between the first holding arm and the optical lens and/or the second holding arm and the optical lens between the lenses.

In the above-mentioned periscope camera module, the at least one protrusion has a curved strip shape, and the at least one groove has a curved strip shape.

In the above periscope camera module, the lens carrier has a U-shaped structure.

In the above-mentioned periscope camera module, the second limiting mechanism includes a baffle suitable for engaging with the lens carrier. When the baffle is engaged with the lens carrier, the baffle is The lower surface is in contact with the upper surface of the optical lens, and in this way, the movement of the optical lens toward the opening is restricted.

In the above-mentioned periscope camera module, the baffle includes a baffle body and a first engaging arm and a second engaging arm extending downward from two sides of the baffle body, respectively, wherein the lens The carrier includes a first engaging groove formed concavely on the upper surface of the first holding arm and a second engaging groove formed concavely on the upper surface of the second holding arm, wherein all of the baffle plates are The first engaging arm and the second engaging arm are respectively suitable for engaging with the first engaging groove and the second engaging groove, and in this way, the baffle is engaged with the the lens carrier.

In the above-mentioned periscope camera module, the first engaging groove and the second engaging groove are arranged symmetrically with respect to the optical axis.

In the above-mentioned periscope camera module, the baffle is clamped on the second part of the lens carrier that is close to the light incident side of the optical lens.

In the above-mentioned periscope camera module, the baffle is made of plastic material, and its thickness is greater than or equal to 0.4 mm.

In the above-mentioned periscope camera module, the baffle is made of metal material, and its thickness ranges from 0.1 mm to 0.2 mm.

In the above-mentioned periscope camera module, the second limiting mechanism further includes a buffer layer stacked on the lower surface of the baffle.

In the above-mentioned periscope camera module, the limiting device further includes a third limiting mechanism disposed between the baffle and the upper surface of the optical lens, and the third limiting mechanism includes a recess At least one limiting hole formed on the lower surface of the baffle and at least one limiting post protrudingly formed on the upper surface of the optical lens, wherein, when the baffle is clamped to the lens carrier , the at least one limiting hole is engaged with the at least one limiting post.

In the above-mentioned periscope camera module, the light deflection module further includes a light deflection element carrier and a first driving element, the light deflection unit is mounted on the light deflection element carrier, and the first driving element uses moving the light-reversing element carrier to drive the light-reversing element.

In the above-mentioned periscope camera module, the lens module further includes a second driving element for moving the lens carrier to drive the optical lens.

According to another aspect of the present application, a method for assembling a lens module is also provided, comprising:

A lens carrier, an optical lens and a baffle are provided, wherein the lens carrier has a mounting cavity and an opening formed in a top area of the lens carrier, the opening communicates with the mounting cavity; the lens carrier has a protrudingly formed At least one protrusion on its inner surface; the optical lens has at least one groove formed concavely on its outer surface;

The optical lens is installed in the mounting cavity from the opening of the lens carrier in a manner that the at least one groove is aligned with the at least one protrusion, wherein the at least one protrusion is aligned with the at least one protrusion. A groove is engaged to limit the movement of the optical lens along the optical axis; and

The baffle is clamped to the lens carrier, so that the baffle is in contact with the upper surface of the optical lens, and in this way, the movement of the optical lens toward the opening is restricted.

In the above assembling method, the at least one protrusion is formed on the first part of the lens carrier that is close to the light-emitting side of the optical lens.

In the above assembling method, after the optical lens is installed in the installation cavity from the opening of the lens carrier, the method further includes: disposing an adhesive between the lens carrier and the optical lens, wherein the The elastic modulus of the adhesive is less than or equal to 1.2GPa.

In the above-mentioned assembling method, the lens carrier includes a carrier base and a first holding arm and a second holding arm that are bent and extended upward on the carrier base, the first holding arm, the second holding arm and the carrier The base forms the mounting cavity and the opening, wherein the adhesive is disposed between the first holding arm and the optical lens and/or between the second holding arm and the optical lens.

Further objects and advantages of the present application will be fully realized by an understanding of the ensuing description and drawings.

These and other objects, features and advantages of the present application are fully embodied by the following detailed description, drawings and claims.

Description of drawings

The above and other objects, features and advantages of the present application will become more apparent from the detailed description of the embodiments of the present application in conjunction with 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, and are used to explain the present application together with the embodiments of the present application, and do not constitute a limitation to the present application. In the drawings, the same reference numbers generally refer to the same components or steps.

FIG. 1 illustrates a schematic perspective view of a periscope camera module according to an embodiment of the present application.

FIG. 2 illustrates a schematic cross-sectional view of the periscope camera module according to an embodiment of the present application.

FIG. 3 is a schematic perspective view of the periscope camera module after the cover plate is removed according to an embodiment of the present application.

FIG. 4 illustrates a schematic perspective view of a lens module of the periscope camera module according to an embodiment of the present application.

FIG. 5 illustrates an exploded schematic diagram of a lens module of the periscope camera module according to an embodiment of the present application.

FIG. 6 illustrates another exploded schematic diagram of the lens module of the periscope camera module according to an embodiment of the present application.

FIG. 7 illustrates a schematic diagram of an optical lens of an optical lens of the lens module according to an embodiment of the present application.

FIG. 8 illustrates a schematic cross-sectional view of the lens module according to an embodiment of the present application.

FIG. 9A illustrates a schematic diagram of a variant implementation of the lens module according to an embodiment of the present application.

FIG. 9B illustrates a schematic diagram of another variant implementation of the lens module according to an embodiment of the present application.

FIG. 9C illustrates a schematic diagram of yet another variant implementation of the lens module according to an embodiment of the present application.

FIG. 9D illustrates a schematic diagram of yet another variant implementation of the lens module according to an embodiment of the present application.

FIG. 9E illustrates a schematic diagram of yet another variant implementation of the lens module according to an embodiment of the present application.

FIG. 9F illustrates a schematic diagram of yet another variant implementation of the lens module according to an embodiment of the present application.

FIG. 9G illustrates a schematic diagram of yet another variant implementation of the lens module according to an embodiment of the present application.

FIG. 9H illustrates a schematic diagram of yet another variant implementation of the lens module according to an embodiment of the present application.

FIG. 10 illustrates a schematic diagram of an assembling process of the lens module according to an embodiment of the present application.

Detailed ways

Hereinafter, 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, and it should be understood that the present application is not limited by the example embodiments described herein.

Application overview

As mentioned above, in the existing periscope camera module, for example, in the periscope camera module disclosed in Chinese Patents CN201920034728.4 and CN201910770361.7, it includes a U carrier for carrying an optical lens , the optical lens is installed in the U-shaped carrier, and the motor drives the U-shaped carrier to move to realize the above-mentioned optical adjustment function.

After research, the inventor of the present application found that during the curing process of the glue, the glue will shrink to generate tensile stress on the optical lens, so that a certain stress is generated inside the lens, and the stress will cause the surface shape of the optical lens located inside the optical lens to deform. Or the position is shifted, so that the resolving power of the optical lens is reduced.

In addition, in the process of baking, curing and cooling of the periscope camera module, the glue arranged between the lens barrel of the optical lens and the U-shaped carrier has a different thermal expansion coefficient from the lens barrel, which will cause the lens barrel to be different from the lens barrel. The glue produces different amounts of shrinkage, resulting in a shift in the relative positional relationship between the optical lens and the U-shaped carrier. In addition, this also causes a certain stress inside the lens, which affects the surface shape of the optical lens in the optical lens, and reduces the imaging quality of the periscope camera module.

In addition, in some existing periscope camera modules, in order to reduce the overall height size, D-CUT optical lens is used. The D-CUT lens does not have an approximately circular symmetrical shape like the optical lens in the conventional module. D-CUT lenses or D-CUT lenses are unequal in size in the two perpendicular radial dimensions, so they are subject to more uneven stress, especially in the direction of the shorter radial dimension of the D-CUT lens. Facial changes are more serious.

In view of the above technical problems, the basic idea of the present application is to locate and limit the relative position of the optical lens relative to the lens carrier through other limiting mechanisms, so as to reduce (or even not need) the need for fixing the optical lens to the lens carrier The application amount of the adhesive can reduce (or even avoid) the relative position shift of the optical lens relative to the lens carrier and/or the deformation of the optical lens inside the optical lens due to the curing shrinkage of the adhesive.

Based on this, the present application proposes a periscope camera module, which includes: an outer casing; a light turning module located in the outer casing, including a light turning unit for turning imaging light; located in the outer casing and corresponding to In the lens module of the light turning module, the lens module is provided with an optical axis along the length direction of the periscope camera module, wherein the lens module includes: an optical lens, a lens carrier and a limiting device , the lens carrier has a mounting cavity and an opening formed in a top area of the lens carrier, the opening communicates with the mounting cavity, so that the optical lens can be adapted from the top of the lens carrier through the opening is installed into the installation cavity; wherein, the limit device includes a first limit mechanism and a second limit mechanism, and the first limit mechanism is arranged between the lens carrier and the optical lens, using In order to limit the movement of the optical lens along the optical axis; the second limiting mechanism is arranged on the lens carrier and the inner surface of the second limiting mechanism is adapted to abut against the upper surface of the optical lens , for restricting the movement of the optical lens toward the opening, in such a way that the optical lens is held in the mounting cavity; and, a photosensitive module corresponding to the lens module, wherein the photosensitive The module includes a photosensitive unit for imaging.

Having introduced the basic principles of the present application, various non-limiting embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Exemplary periscope camera module

As shown in FIG. 1 to FIG. 3 , the periscope camera module based on the embodiment of the present application is illustrated, wherein the periscope camera module includes: an outer casing 10 having a receiving cavity 100 and a light window 101 , which is The light refraction module 20 disposed in the receiving cavity 100 and corresponding to the light window 101, the lens module 30 disposed in the outer casing 10 and corresponding to the light refraction module 20, and, corresponding to the The photosensitive module 40 of the lens module 30 is described. In particular, as shown in FIG. 1 , in the embodiment of the present application, the photosensitive module 40 is attached to the side of the outer casing 10 and corresponds to the lens module 30 , so as to receive the light from the lens module 30 . Image the light and image it.

During the working process of the periscope camera module, the imaging light from the outside enters the outer casing 10 through the light window 101 , and turns nearly 90° at the light turning module 20 to Towards the lens module 30 , and further, the imaging light reaches the photosensitive module 40 after being modulated by the lens module 30 for imaging reaction.

More specifically, as shown in FIG. 1 to FIG. 3 , the outer casing 10 includes a bottom plate 11 and an encapsulation case 12 mounted on the bottom plate 11 , and the bottom plate 11 can be used to carry the lens module 30 and the Light bending module 20 . As shown in FIG. 1 , the packaging case 12 includes a cover plate 13 and a side plate 14 extending downward from the cover plate 13 to have a U-shaped structure, and the packaging case 12 is mounted on the bottom plate 11 . , it cooperates with the bottom plate 11 to define the receiving cavity 100 . As shown in FIG. 1 , the encapsulation case 12 further has an opening formed through the cover plate 13 , and the opening forms a light window 101 corresponding to the light refraction module 20 for allowing external imaging light to pass through. The light window 101 enters the outer casing 10 .

It is worth mentioning that, in the embodiment of the present application, the bottom plate 11 may have an integrated structure, which simultaneously supports the lens module 30 and the light turning module 20 thereon. Of course, in other examples of the present application, the bottom plate 11 may also have a split structure, for example, it includes a first bottom plate and a second bottom plate that are separated from each other, wherein the first bottom plate carries the lens module 30, so The second base plate carries the light turning module 20, which is not limited by the present application.

As shown in FIGS. 1 to 3 , in the embodiment of the present application, the light deflection module 20 includes a light deflection element carrier 22 and a light deflection element 21 mounted on the light deflection element carrier 22 . In a specific implementation, the light-reflecting element 21 can be any component with a light-reflecting function, including but not limited to prisms, mirrors, and the like, which are not limited by this application.

As shown in FIGS. 1 to 6 , in the embodiment of the present application, the lens module 30 includes: an optical lens 31 , a lens carrier 32 and a limiting device 33 , wherein the lens carrier 32 has a mounting cavity 320 and a The opening 321 in the top area of the lens carrier 32 communicates with the mounting cavity 320 so that the optical lens 31 is adapted to be mounted from the top of the lens carrier 32 through the opening 321 inside the installation cavity 320 . That is, in the embodiment of the present application, the lens carrier 32 has an opening 321 facing the direction in which light enters the light window 101 , and the position of the opening 321 is set so that the optical lens 31 can pass from the lens carrier 32 The upper part of the lens carrier 32 is installed in the installation cavity 320 of the lens carrier 32 . That is, in the embodiment of the present application, the pose of the optical lens 31 can be adjusted from above the lens carrier 32, so that the relative positional relationship between the optical lens 31 and the lens carrier 32 satisfies the predetermined set requirements. The optical lens 31 has a light incident side 311 and a light exit side 312 opposite to the light incident side 311 , wherein the light incident side 311 corresponds to the light turning module 20 , and the light exit side 312 corresponds to the light refracting module 20 . In the photosensitive module 40 , that is, the light incident side 311 is the object side of the optical lens 31 , and the light exit side 312 is the image side of the optical lens 31 .

As shown in FIG. 1 to FIG. 6 , the lens carrier 32 includes a carrier base 322 and a first holding arm 323 and a second holding arm 324 that are bent upward on the carrier base 322 . The second holding arm 324 and the carrier base 322 form the mounting cavity 320 and the opening 321 . Accordingly, the lens carrier 32 has a U-shaped structure.

As mentioned above, in the prior art, in order to firmly fix the lens on the U-shaped carrier, a large amount of glue is arranged between the lens and the U-shaped carrier. A large amount of glue is distributed on the bottom surface and both sides of the lens. After curing, the image quality of the periscope camera module will be seriously degraded.

Correspondingly, in the embodiment of the present application, the relative position of the optical lens 31 relative to the lens carrier 32 is positioned and limited by other limiting mechanisms, so as to reduce (or even not need) the need for fixing the optical lens 31 to the lens carrier 32 . The amount of adhesive applied to the lens carrier 32, thereby reducing (or even avoiding) the relative position shift of the optical lens 31 relative to the lens carrier 32 due to the curing shrinkage of the adhesive and/or the optical lens inside the optical lens 31. The lens 31 is deformed.

Specifically, as shown in FIGS. 4 to 6 , in the embodiment of the present application, the limiting device 33 includes a first limiting mechanism 331 and a second limiting mechanism 332 , and the first limiting mechanism 331 is provided on the Between the lens carrier 32 and the optical lens 31, it is used to limit the movement of the optical lens 31 along the optical axis; the second limiting mechanism 332 is disposed on the lens carrier 32 and the second limiting mechanism 332 is disposed on the lens carrier 32. The inner surface of the positioning mechanism 332 is adapted to abut against the upper surface of the optical lens 31, so as to limit the movement of the optical lens 31 toward the opening 321, in this way, the optical lens 31 is kept on the inside the installation cavity 320 .

Correspondingly, in the embodiment of the present application, the six degrees of freedom of the optical lens 31 relative to the lens carrier 32 are all constrained by the limiting device 33 , so that the optical lens 31 is stably positioned and It is limited within the lens carrier 32 to ensure the imaging quality of the periscope camera module. Specifically, the degrees of freedom of the optical lens 31 relative to the lens carrier 32 in the X and Y directions are constrained by the first limiting mechanism 331 , and the optical lens 31 is relative to the lens carrier 32 in the Z direction. The degree of freedom in the direction is constrained by the second limiting mechanism 332, in this way, the optical lens 31 is stably positioned and limited in the lens carrier 32 to ensure the periscope camera Image quality of the module. Here, in the embodiment of the present application, the Z-axis direction of the optical lens 31 is the direction perpendicular to the optical axis, that is, the direction toward the opening 321 of the lens carrier 32 , correspondingly, the X-axis and Y-axis directions Based on the determination of the Z-axis direction, it can also be determined.

Specifically, as shown in FIGS. 4 to 6 , and as shown in FIG. 8 , in the embodiment of the present application, the first limiting mechanism 331 includes at least one protrusion protrudingly formed on the inner surface of the lens carrier 32 335 and at least one groove 336 concavely formed on the outer surface of the optical lens 31, the at least one groove 336 and the at least one protrusion 335 have a matching size and shape. When the optical lens 31 is installed in the installation cavity 320 from the opening 321, the at least one protrusion 335 is fitted with the at least one groove 336, and in this way, the optical lens 31 is limited. The lens 31 moves along the optical axis. It should be understood that, in the embodiment of the present application, when the optical lens 31 is installed in the installation cavity 320 from the opening 321 , at least one protrusion is formed protrudingly on the inner surface of the lens carrier 32 . 335 is engaged with at least one groove 336 concavely formed on the outer surface of the optical lens 31, so as to pre-position the optical lens 31 in the installation cavity 320 and restrict the optical lens 31 along the The optical axis moves.

As shown in FIGS. 4 to 6 and FIG. 8 , in the embodiment of the present application, the at least one protrusion 335 is formed on the inner surface of the lens carrier 32 in a circumferential manner, and the at least one groove 336 is circumferentially formed on the inner surface of the lens carrier 32 . is formed on the outer surface of the optical lens 31, so that when the optical lens 31 is installed in the installation cavity 320 from the opening 321, the optical lens 31 is relative to the lens carrier 32 at X, The degree of freedom in the Y direction is restricted by the first limiting mechanism 331 .

Preferably, in the embodiment of the present application, the at least one protrusion 335 has a curved strip shape, and the at least one groove 336 has a curved strip shape, so as to increase the relationship between the at least one protrusion 335 and the at least one The contact area of a groove 336, and the matching medium in the shape of a curved strip can more effectively prevent the optical lens 31 from moving along the optical axis direction.

It is worth mentioning that, in the embodiment of the present application, the number of the at least one protrusion 335 and the at least one groove 336 is not limited by the present application. The at least one protrusion 335 and the at least one groove 336 are not limited by this application.

In a specific embodiment, marks can be made on the lens carrier 32 and the optical lens 31 (for example, the L mark as shown in FIG. 4 to FIG. 6 ), so as to be identified and judged by the state of the marks The relative pose between the optical lens 31 and the lens carrier 32 , so that the optical lens 31 can be installed on the lens carrier 32 from the opening 321 in the correct direction by identifying the direction of the mark. inside the installation cavity 320, and make the at least one protrusion 335 fit with the at least one groove 336 to engage.

Of course, in other examples of the present application, the relative positional relationship between the at least one protrusion 335 and the at least one groove 336 can be adjusted. For example, the at least one protrusion 335 is formed protrudingly on the optical lens 31 . the outer surface of the lens carrier 32 , the at least one groove 336 is concavely formed on the inner surface of the lens carrier 32 , that is, the first limiting mechanism 331 includes at least one recessed groove 336 formed on the inner surface of the lens carrier 32 A groove 336 and at least one protrusion 335 protrudingly formed on the outer surface of the optical lens 31 are not limited by this application.

In order to further limit the movement of the optical lens 31 in the X and Y axis directions, in this embodiment of the present application, as shown in FIG. 9A , the limiting device 33 further includes a Adhesive 334 between optical lenses 31 . That is, in the embodiment of the present application, the optical lens 31 is pre-fixed in the lens carrier 32 by the first limiting mechanism 331 and the adhesive 334, wherein the adhesive 334 is arranged between the first holding arm 323 and the optical lens 31 and/or between the second holding arm 324 and the optical lens 31 and/or between the optical lens 31 and the carrier base 322 .

In the embodiment of the present application, an adhesive 334 with a lower elastic modulus is used to prevent the adhesive 334 from having a great influence on the optical lens 31 . More specifically, in the embodiment of the present application, the elastic modulus of the adhesive 334 is less than or equal to 1.2 GPa, and preferably, the elastic modulus of the adhesive 334 is less than or equal to 0.6 GPa. In the embodiment of the present application, the elastic modulus of the adhesive 334 represents the elastic modulus of the adhesive 334 after curing.

In particular, when the optical lens 310 in the optical lens 31 is implemented as an edge-cut lens, the application position of the adhesive 334 is preferably that the adhesive 334 is arranged on the first holding arm 323 and the Between the optical lens 31 and/or between the second holding arm 324 and the optical lens 31, the reason is that when the lens is a trimmed lens, the lens barrel is separated from the optical lens 31 on the trimmed side of the lens. The optical zone of the middle optical lens 310 is more adjacent, and in the embodiment of the present application, the cut edge side of the optical lens 31 corresponds to the carrier base 322, therefore, if the adhesive 334 is applied to the optical lens Between the lens 31 and the carrier base 322 , the adhesive 334 has a greater influence on the trimmed side of the trimmed lens.

It is worth mentioning that, in the embodiment of the present application, the edge-cutting lens includes the lens barrel and at least the edge-cutting optical lens 310 accommodated in the lens barrel, wherein the edge-cutting optical lens 310 has At least all sides. In the embodiment of the present application, the number of trimmed edges is preferably 2 or 4. The edge-cut optical lens 310 may be formed by grinding or cutting the lens after the optical lens 310 is formed, or may be directly shaped by the shape of the mold when the lens is formed. Corresponding to the cut edge of the edge cut optical lens 310 , the lens barrel also has at least a cut edge.

Those of ordinary skill in the art should know that the optical lens 310 located on the image side of the optical lens 31 has low sensitivity. Here, the low sensitivity of the optical lens 310 refers to moving the position of the optical lens 310 or changing the optical lens The influence of the surface shape of 310 on the overall resolution of the optical lens 31 is lower than that of other optical lenses 310 . That is, the optical lens 310 of the optical lens 31 close to the light exit side 312 of the optical lens 31 has a lower sensitivity of the optical lens 310 , and the optical lens 31 close to the light entrance side of the optical lens 31 The optical lens 310 of 311 has a higher sensitivity of the optical lens 310 . Therefore, preferably, in the embodiment of the present application, the adhesive 334 is arranged at a position close to the light-emitting side 312 of the optical lens 31 , that is, preferably, the adhesive 334 is arranged on the lens The second part of the carrier 32 that is close to the light-emitting side 312 of the optical lens 31 .

It is worth mentioning that, in other examples of the present application, the first limiting mechanism 331 can be used alone without the adhesive 334 to pre-position the optical lens 31; or, in other examples of the present application In this example, the adhesive 334 can be used alone to pre-position the optical lens 31 , that is, in this example, the first limiting mechanism 331 can be implemented as the adhesive 334 .

It should be understood that after the optical lens 31 is limited by the first limiting mechanism 331, the movement of the optical lens 31 in the X and Y directions is limited, but it can move along the Z direction, That is, it moves toward the opening 321 of the lens carrier 32 . Correspondingly, the function of the second limiting mechanism 332 is to limit the movement of the optical lens 31 toward the opening 321 , that is, to limit the degree of freedom of the optical lens 31 in the Z direction.

4 to 6 , and as shown in FIGS. 8 and 9A , the second limiting mechanism 332 includes a baffle 337 adapted to be engaged with the lens carrier 32 . When the baffle 337 is engaged with the lens carrier 32 , When the lens carrier 32 is mounted, the lower surface of the baffle 337 abuts against the upper surface of the optical lens 31 , and in this way, the movement of the optical lens 31 toward the opening 321 is restricted.

Specifically, in the embodiment of the present application, the baffle 337 includes a baffle body 3371 and a first engaging arm 3372 and a second engaging arm 3373 extending downward from two sides of the baffle body 3371, respectively. The lens carrier 32 includes a first engaging groove 3231 formed concavely on the upper surface of the first holding arm 323 and a second engaging groove formed concavely on the upper surface of the second holding arm 324 3241, wherein the first engaging arm 3372 and the second engaging arm 3373 of the baffle plate 337 are respectively adapted to engage with the first engaging groove 3231 and the second engaging groove 3241 , in this way, the baffle 337 is clamped to the lens carrier 32 . In addition, when the baffle 337 is engaged with the lens carrier 32, the lower surface of the baffle 337 is in contact with the upper surface of the optical lens 31, so as to prevent the optical lens 31 from The resistance of the opening 321 falling off. That is, in the embodiment of the present application, when the baffle 337 is engaged with the lens carrier 32, there is contact (eg, point contact, line contact) between the baffle 337 and the optical lens 31 carrier. or surface contact, preferably, surface contact), to restrict the movement of the optical lens 31 toward the opening 321 by the baffle 337 .

Those of ordinary skill in the art should know that in the periscope camera module, in order to increase the light input of the periscope module and increase the aperture of the periscope module, the optical lens 31 is located near the object side. The optical lens 310 has a larger size, and the optical lens 310 near the image side has a relatively small size, that is, in the application embodiment, the first part of the lens carrier 32 has a relatively large size. size, the second portion of the lens carrier 32 has a relatively small size. Preferably, in the embodiment of the present application, the baffle 337 is clamped on the second part of the lens carrier 32 that is close to the light incident side 311 of the optical lens 31 , so that the upper part of the optical lens 31 is There may be a larger contact area between the surface and the lower surface of the baffle plate 337 to improve the limiting effect.

In addition, since the first limiting mechanism 331 is disposed on the first portion of the lens carrier 32 that is close to the light-emitting side 312 of the optical lens 31 , the first limiting mechanism 331 and the blocking The limiting force provided by the plate 337 forms a pair of balanced limiting forces to some extent, so as to achieve better positioning and limiting effects.

In order for the baffle 337 to restrain the optical lens 31 more stably, the baffle 337 needs to have sufficient strength. In a specific implementation, when the baffle 337 is made of a plastic material (for example, injection-molded from a plastic material such as polycarbonate), the thickness of the baffle 337 is greater than or equal to 0.4 mm, for example, the baffle The thickness of 337 can be set to 0.5mm. Of course, a thicker baffle 337 will affect the height dimension of the periscope camera module. Therefore, in this embodiment of the present application, preferably, the baffle 337 is made of a metal material (for example, steel, iron, etc.). , copper, aluminum, etc.), its thickness can range from 0.1mm to 0.2mm, for example, the thickness of the baffle 337 made of metal material can be set to 0.15mm, which can ensure that the optical lens 31 does not It can also prevent the height of the periscope camera module from being too large.

In order to prevent the baffle 337 from falling off the lens carrier 32 , in the embodiment of the present application, as shown in FIG. 9A , an adhesive 334 may be applied in the first engaging groove 3231 and the second engaging groove 3241 , so as to firmly fix the baffle 337 on the upper surface of the lens carrier 32 .

Of course, in other examples of the present application, the baffle 337 and the lens carrier 32 can also be fixed by a mechanical structure instead of the adhesive 334 , so as to avoid shrinkage due to curing of the adhesive 334 Or the position of the baffle plate 337 is shifted due to the variation of baking and curing. Specifically, as shown in FIGS. 9B to 9C , the lens carrier 32 further has female buckles respectively disposed in the first engaging groove 3231 and the second engaging groove 3241 . The first engaging arm 3372 and the second second engaging arm 3373 respectively include male buckles formed at the ends thereof, so that the baffle can be attached to the baffle through the cooperation between the male buckles and the female buckles. 337 is stably fixed on the lens carrier 32 .

Of course, in other examples of the present application, the mechanical structure (ie, for example, the male and female snaps as illustrated in FIGS. 9B and 9C ) can also be used in conjunction with the adhesive 334, ie, can be further described in the An adhesive 334 is applied in the first engaging groove 3231 and the second engaging groove 3241, as shown in FIG. 9D, so as to more stably ensure the baffle 337 and the The relative positional relationship between the lens carriers 32 .

Of course, in other examples of the present application, the setting position of the female buckle of the mechanical structure may not be within the first engaging groove 3231 and the second engaging groove 3241 of the lens carrier 32, for example, As shown in FIGS. 9E and 9F, the positions of the female buckles are set on the outer and inner side walls of the first holding arm 323 and the second holding arm 324 of the lens carrier 32, and for this, and Not limited by this application.

FIG. 9G illustrates a schematic diagram of yet another variant implementation of the lens module 30 according to an embodiment of the present application. As shown in FIG. 9G , in this modified embodiment, the second limiting mechanism 332 further includes a buffer layer 338 stacked on the lower surface of the baffle 337 , wherein the function of the buffer layer 338 is to properly It is beneficial to reduce the interference force of the baffle 337 on the optical lens 31, and reducing the pressure of the baffle 337 on the optical lens 31 is beneficial to reduce the degree of deformation of the optical lens 310 in the optical lens 31; at the same time, The baffle 337 can also appropriately reduce the impact force of the optical lens 31 on the baffle 337 .

That is, in this modified embodiment, the buffer layer 338 is further provided between the upper surface of the optical lens 31 and the lower surface of the baffle 337 . In a specific implementation, the buffer layer 338 may be integrally formed on the lower surface of the baffle 337 , and of course, may also be provided separately from the baffle 337 , which is not limited by this application. In terms of material selection, the buffer layer 338 can be made of materials such as foam.

FIG. 9H illustrates a schematic diagram of yet another variant implementation of the lens module 30 according to an embodiment of the present application. As shown in FIG. 9H , in this modified embodiment, the limiting device 33 further includes a third limiting mechanism 333 disposed between the baffle 337 and the upper surface of the optical lens 31 . The third limiting mechanism 333 includes at least one limiting hole 3331 concavely formed on the lower surface of the baffle 337 and at least one limiting post 3332 protrudingly formed on the upper surface of the optical lens 31 . The baffle 337 is engaged with the lens carrier 32 , and the at least one limiting hole 3331 is engaged with the at least one limiting post 3332 .

In this way, when the baffle 337 is fixed to the lens carrier 32 , the at least one limiting post 3332 disposed on the upper surface of the optical lens 31 is limited from the at least one position of the baffle 337 The hole 3331 passes through, so that after the baffle 337 is installed, the position of the optical lens 31 relative to the baffle 337 is not easy to move, and further, the lens in the periscope camera module is improved. Module 30 reliability.

Preferably, the number of the at least one limiting hole 3331 and the at least one limiting post 3332 is preferably at least two.

To sum up, based on the periscope camera module and the lens module 30 thereof according to the embodiment of the present application, it is explained that the relative position of the optical lens 31 relative to the lens carrier 32 is positioned and limited by other limiting mechanisms, so as to reduce (or even not (required) the application amount of the adhesive 334 for fixing the optical lens 31 to the lens carrier 32, so as to reduce (or even avoid) the relative adhesion of the optical lens 31 to the lens carrier 32 due to the curing shrinkage of the adhesive 334 The position is shifted and/or the optical lens 31 inside the optical lens 31 is deformed.

It is worth mentioning that, in the embodiment of the present application, the periscope camera module further includes a driving element (not shown in the figure) for driving the lens module 30 and/or the light turning module 20 . For example, in the embodiment of the present application, the light turning module 20 may further include a first driving element for moving the carrier of the light turning element 21 to drive the light turning element 21 , for example, the first driving element The element is used to rotate the carrier of the light turning element 21 to rotate the light turning element 21 to achieve the purpose of optical anti-shake. For another example, in the embodiment of the present application, the lens module 30 may further include a second driving element for moving the lens carrier 32 to drive the optical lens 31 , for example, the second driving element is used for translation The lens carrier 32 is used to translate the optical lens 31 to achieve the purpose of optical focusing or optical zooming.

Schematic lens module

According to another aspect of the present application, a lens module 30 suitable for a periscope camera module is also provided, which includes: an optical lens 31 , a lens carrier 32 and a limiting device 33 . The lens carrier 32 has a mounting cavity 320 and an opening 321 formed in a top area of the lens carrier 32 , the opening 321 communicates with the mounting cavity 320 , and the optical lens 31 is adapted to fit through the opening 321 . It is mounted into the mounting cavity 320 from the top of the lens carrier 32 . The limiting device 33 includes a first limiting mechanism 331 and a second limiting mechanism 332. The first limiting mechanism 331 is disposed between the lens carrier 32 and the optical lens 31 for limiting the optical The lens 31 moves along the optical axis; the second limiting mechanism 332 is disposed on the lens carrier 32 and the inner surface of the second limiting mechanism 332 is adapted to abut against the upper surface of the optical lens 31 , for restricting the movement of the optical lens 31 toward the opening 321 , so that the optical lens 31 is kept in the installation cavity 320 .

It should be understood that, in the embodiment of the present application, the functions and descriptions of the lens module 30 , the first limiting mechanism 331 and the second limiting mechanism 332 have been described in the above-mentioned schematic periscope camera module. It is fully described and will not be repeated here.

It is worth mentioning that, in the embodiment of the present application, the type of the periscope camera module is not limited by the present application, wherein the periscope camera module may have an optical zoom function and an auto focus function. , Optical anti-shake function, in different types of the periscope camera module, the lens module 30 can be applied.

Assembly Method of Exemplary Lens Module

According to another aspect of the present application, an assembling method of the lens module 30 is also provided.

FIG. 10 illustrates a schematic diagram of an assembling process of the lens module 30 according to an embodiment of the present application. As shown in FIG. 10 , the assembly process of the lens module 30 according to the embodiment of the present application includes the following steps.

First, a lens carrier 32, an optical lens 31 and a baffle 337 are provided, wherein the lens carrier 32 has a mounting cavity 320 and an opening 321 formed in the top area of the lens carrier 32, the opening 321 communicating with the mounting cavity 320; the lens carrier 32 has at least one protrusion 335 formed protrudingly on its inner surface; the optical lens 31 has at least one groove 336 formed concavely on its outer surface;

Then, in a manner that the at least one groove 336 is aligned with the at least one protrusion 335, the optical lens 31 is installed in the mounting cavity 320 from the opening 321 of the lens carrier 32, wherein the The at least one protrusion 335 is engaged with the at least one groove 336 to limit the movement of the optical lens 31 along the optical axis; and

Next, the baffle 337 is clamped to the lens carrier 32 , so that the baffle 337 is in contact with the upper surface of the optical lens 31 , and in this way, the optical lens 31 is restricted from facing the opening 321 move.

In one example, in the above assembling method, the at least one protrusion 335 is formed on the first part of the lens carrier 32 that is close to the light exit side 312 of the optical lens 31 .

In an example, in the above assembly method, after the optical lens 31 is installed in the installation cavity 320 from the opening 321 of the lens carrier 32 , the method further includes: installing the lens carrier 32 and the optical lens An adhesive 334 is arranged between the lenses 31 , wherein the elastic modulus of the adhesive 334 is less than or equal to 1.2 Gpa.

In one example, in the above-mentioned assembling method, the lens carrier 32 includes a carrier base 322 and a first holding arm 323 and a second holding arm 324 which are bent upwardly and extended on the carrier base 322 , the first holding arm 323 , the second holding arm 324 and the carrier base 322 form the mounting cavity 320 and the opening 321 , wherein the adhesive 334 is arranged between the first holding arm 323 and the optical lens 31 and/or between the second holding arm 324 and the optical lens 31 .

To sum up, the assembling method of the lens module 30 based on the embodiment of the present application is clarified, which locates and limits the relative position of the optical lens 31 relative to the lens carrier 32 through other limiting mechanisms, so as to reduce (even unnecessary) The applied amount of the adhesive 334 for fixing the optical lens 31 to the lens carrier 32, thereby reducing (or even avoiding) the relative position of the optical lens 31 relative to the lens carrier 32 caused by the curing shrinkage of the adhesive 334. Offset and/or deformation of the optical lens 31 inside the optical lens 31 .

It should be understood by those skilled in the art that the embodiments of the present invention shown in the above description and the accompanying drawings are only examples and do not limit the present invention. 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 embodiments, and the embodiments of the present invention may be modified or modified in any way without departing from the principles.

Claims

A periscope camera module, comprising:

A light-reflecting module, including a light-reflecting unit for bending imaging light;

Corresponding to the lens module of the light turning module, the lens module is provided with an optical axis along the length direction of the periscope camera module, wherein the lens module includes: an optical lens, a lens carrier and a limiter A device, the lens carrier has a mounting cavity and an opening formed in a top area of the lens carrier, the opening communicates with the mounting cavity, so that the optical lens can be adapted from the lens carrier through the opening The top is installed into the installation cavity; wherein, the limiting device includes a first limiting mechanism and a second limiting mechanism, and the first limiting mechanism is arranged between the lens carrier and the optical lens, for restricting the movement of the optical lens along the optical axis; the second limiting mechanism is arranged on the lens carrier and the inner surface of the second limiting mechanism is adapted to abut against the upper surface of the optical lens a surface for restricting movement of the optical lens toward the opening such that the optical lens is retained within the mounting cavity; and

A photosensitive module corresponding to the lens module, wherein the photosensitive module includes a photosensitive unit for imaging.
The periscope camera module according to claim 1, wherein the first limiting mechanism comprises at least one protrusion formed protrudingly on the inner surface of the lens carrier and a recess formed on the outer surface of the optical lens At least one groove on the surface, wherein when the optical lens is installed in the installation cavity from the opening, the at least one protrusion is engaged with the at least one groove, and in this way, The optical lens is restricted from moving along the optical axis.
The periscope camera module according to claim 1, wherein the first limiting mechanism comprises at least one groove formed concavely on the inner surface of the lens carrier and a groove formed protrudingly on the optical lens At least one protrusion on the outer surface, wherein when the optical lens is installed in the mounting cavity from the opening, the at least one protrusion is engaged with the at least one groove, in this way , restricting the movement of the optical lens along the optical axis.
The periscope camera module according to claim 2 or 3, wherein the at least one protrusion and the at least one groove are formed in a first part of the lens carrier that is close to the light-emitting side of the optical lens.
The periscope camera module of claim 1 , wherein the first limiting mechanism is implemented as an adhesive, and the adhesive has an elastic modulus less than 1.2 GPa.
The periscope camera module according to claim 4, wherein the limiting device further comprises an adhesive disposed between the lens carrier and the optical lens, the elastic modulus of the adhesive is less than or equal to 1.2GPa.
The periscope camera module according to claim 6, wherein the adhesive is arranged on the first part of the lens carrier that is close to the light-emitting side of the optical lens.
The periscope camera module according to claim 6, wherein the lens carrier comprises a carrier base and a first holding arm and a second holding arm bent upwardly and extending on the carrier base, the first holding arm, the second holding arm and the carrier base form the mounting cavity and the opening; wherein the adhesive is disposed between the first holding arm and the optical lens and/or the second between the holding arm and the optical lens.
The periscope camera module of claim 4 , wherein the at least one protrusion has a curve shape, and the at least one groove has a curve shape.
The periscope camera module of claim 8, wherein the lens carrier has a U-shaped structure.
The periscope camera module according to claim 8, wherein the second limiting mechanism comprises a baffle adapted to be engaged with the lens carrier, when the baffle is engaged with the lens carrier , the lower surface of the baffle is in contact with the upper surface of the optical lens, and in this way, the movement of the optical lens toward the opening is restricted.
The periscope camera module according to claim 11, wherein the baffle comprises a baffle body and a first engaging arm and a second engaging arm extending downward from two sides of the baffle body, respectively, Wherein, the lens carrier includes a first engaging groove formed concavely on the upper surface of the first holding arm and a second engaging groove formed concavely on the upper surface of the second holding arm, wherein the The first engaging arm and the second engaging arm of the baffle plate are adapted to be engaged with the first engaging groove and the second engaging groove respectively. The board is clamped to the lens carrier.
The periscope camera module according to claim 12, wherein the first engaging groove and the second engaging groove are arranged symmetrically with respect to the optical axis.
The periscope camera module of claim 12 , wherein the baffle is clamped to a second portion of the lens carrier that is close to the light incident side of the optical lens.
The periscope camera module according to claim 14, wherein the baffle is made of a plastic material, and its thickness is greater than or equal to 0.4 mm.
The periscope camera module according to claim 14, wherein the baffle is made of a metal material, and its thickness ranges from 0.1 mm to 0.2 mm.
The periscope camera module according to claim 11, wherein the second limiting mechanism further comprises a buffer layer stacked on the lower surface of the baffle.
The periscope camera module according to claim 11, wherein the limiting device further comprises a third limiting mechanism disposed between the baffle and the upper surface of the optical lens, the first limiting mechanism The three-limiting mechanism includes at least one limiting hole formed concavely on the lower surface of the baffle and at least one limiting column protrudingly formed on the upper surface of the optical lens. In conjunction with the lens carrier, the at least one limiting hole is engaged with the at least one limiting post.
The periscope camera module according to claim 1, wherein the light turning module further comprises a light turning element carrier and a first driving element, the light turning unit is mounted on the light turning element carrier, and the The first driving element is used for moving the light turning element carrier to drive the light turning element.
The periscope camera module of claim 1, wherein the lens module further comprises a second driving element for moving the lens carrier to drive the optical lens.
A lens module suitable for a periscope camera module, comprising:

optical lens;

a lens carrier having a mounting cavity and an opening formed in a top area of the lens carrier, the opening communicating with the mounting cavity to adapt the optical lens to be mounted from the top of the lens carrier through the opening into the mounting cavity; and,

A limiting device, including a first limiting mechanism and a second limiting mechanism, the first limiting mechanism is arranged between the lens carrier and the optical lens, and is used to limit the optical lens along the optical axis moving; the second limiting mechanism is disposed on the lens carrier and the inner surface of the second limiting mechanism is adapted to abut against the upper surface of the optical lens, so as to limit the optical lens toward the opening moving so that the optical lens is held in the mounting cavity.
A method for assembling a lens module, comprising:

A lens carrier, an optical lens and a baffle are provided, wherein the lens carrier has a mounting cavity and an opening formed in a top area of the lens carrier, the opening communicates with the mounting cavity; the lens carrier has a protrudingly formed At least one protrusion on its inner surface; the optical lens has at least one groove formed concavely on its outer surface;

The optical lens is installed in the mounting cavity from the opening of the lens carrier in a manner that the at least one groove is aligned with the at least one protrusion, wherein the at least one protrusion is aligned with the at least one protrusion. A groove is engaged to limit the movement of the optical lens along the optical axis; and

The baffle is clamped to the lens carrier, so that the baffle is in contact with the upper surface of the optical lens, and in this way, the movement of the optical lens toward the opening is restricted.
The assembling method of claim 22, wherein the at least one protrusion is formed on a first portion of the lens carrier that is close to the light-emitting side of the optical lens.
The assembling method according to claim 22, wherein after the optical lens is installed in the installation cavity from the opening of the lens carrier, further comprising: arranging between the lens carrier and the optical lens An adhesive, wherein the elastic modulus of the adhesive is less than or equal to 1.2 GPa.
25. The assembling method of claim 24, wherein the lens carrier comprises a carrier base and first and second holding arms bent upward on the carrier base, the first holding arm, the second holding arm The retaining arm and the carrier base form the mounting cavity and the opening, wherein the adhesive is disposed between the first retaining arm and the optical lens and/or the second retaining arm and the between the optical lenses.