Separate lens and camera module

Abstract

A split-type lens and camera module are disclosed. The split-type lens includes: a first lens portion comprising a first lens barrel and at least one first optical lens mounted in the first lens barrel; and a second lens portion assembled with the first lens portion, comprising a second lens barrel and at least one second optical lens mounted in the second lens barrel. The first lens barrel includes a first lens barrel body and at least one support arm extending inwardly from the lower end of the first lens barrel body. The support arm cooperates with the first lens barrel body to form a first mounting cavity, and the first optical lens is mounted in the first mounting cavity by attaching to the support arm. This structural configuration improves the reliability of the split-type lens.

Description

Technical Field

[0001] This application relates to the field of camera modules, and more particularly to split lenses and camera modules. Background Technology

[0002] With the development and popularization of mobile electronic devices, users' demands for various electronic devices have increased significantly, and many new demands have also emerged. In particular, with the development of smartphones, users' pursuit of shooting quality and functions has spurred manufacturers to develop personalized and customized camera modules, such as camera modules with large apertures and wide-angle lenses. At the same time, optical lenses with a relatively larger number of lenses have also appeared to solve aberrations.

[0003] It is understandable that as the number of lenses in an optical lens increases, not only does the optical design of the lens become more and more complex, but the complex optical system is also very sensitive and fragile, which poses a severe challenge to optical lens manufacturers: manufacturing yield is declining and the product quality of optical lenses is difficult to guarantee.

[0004] Furthermore, in order to reduce the overall height and size of some optical lenses, glass lenses are introduced in addition to plastic lenses, which undoubtedly further increases the difficulty of manufacturing optical lenses.

[0005] Therefore, an optimized structural design scheme for optical lenses is needed to reduce the manufacturing difficulty of optical lenses, so as to ensure product yield and product quality. Summary of the Invention

[0006] One advantage of this application is that it provides a split lens and camera module, wherein the stability of the optical lens at the structural design level is optimized by heterogeneously modifying the first lens portion of the split lens, and an active calibration process is used to reduce the assembly difficulty of the optical lens, thereby ensuring product yield and product quality.

[0007] Other advantages and features of this application will become apparent from the following description and can be realized by means and combinations particularly pointed out in the claims.

[0008] To achieve at least one of the aforementioned advantages, according to one aspect of this application, this application provides a split-type lens, comprising:

[0009] The first lens portion includes a first lens barrel and at least one first optical lens mounted on the first lens barrel; and

[0010] The second lens portion assembled with the first lens portion includes a second lens barrel and at least one second optical lens mounted on the second lens barrel;

[0011] The first lens barrel includes a first lens barrel body and at least one support arm extending inward from the lower end of the first lens barrel body. The support arm cooperates with the first lens barrel body to form a first mounting cavity, wherein the first optical lens is mounted in the first mounting cavity by attaching to the support arm.

[0012] In the split lens according to this application, the support arm extends radially inward from the periphery of the lower end of the first lens barrel body.

[0013] In the split lens according to this application, the first optical lens is adaptedly fitted into the first mounting cavity.

[0014] In the split lens according to this application, the first lens portion further includes an adhesive groove formed between the outer periphery of the first optical lens and the first lens barrel body, and an adhesive disposed in the adhesive groove to bond the first optical lens and the first lens barrel body together by means of the adhesive.

[0015] In the split lens according to this application, the first optical lens includes an optical region located in the center and a structural region formed around the periphery of the optical region, the structural region forming the outer periphery of the first optical lens, wherein the upper surface of the structural region is higher than at least a portion of the upper surface of the first lens barrel body.

[0016] In the split lens according to this application, the upper surface of the first lens barrel body extends downwardly from the outer periphery of the first lens barrel body to its inner periphery.

[0017] In the split lens according to this application, the first optical lens has a recessed groove formed on the lower surface of its structural region, and the support arm of the first lens barrel extends into the groove.

[0018] In the split lens according to this application, the thickness of the support arm is 50 micrometers to 150 micrometers.

[0019] In the split lens according to this application, the depth of the groove is less than the thickness of the support arm.

[0020] In the split lens according to this application, the depth of the groove is 50 micrometers to 100 micrometers.

[0021] In the split lens according to this application, the first lens portion further includes the adhesive disposed within the groove for joining the support arm and the first optical lens.

[0022] In the split lens according to this application, the first optical lens is made of a first material, the first lens barrel is made of a second material, and the ratio of the coefficient of thermal expansion of the second material to the coefficient of thermal expansion of the first material is in the range of 100% to 300%.

[0023] In the split lens according to this application, the first material is glass or plastic, and the second material is plastic.

[0024] In the split lens according to this application, the split lens further includes an outer cover for shielding at least a portion of the first lens portion, wherein the first optical lens includes an optical region located in the center and a structural region formed around the periphery of the optical region, the outer cover having an opening, and the optical region of the first optical lens of the first lens portion corresponding to the opening.

[0025] In the split lens according to this application, the outer cover is mounted on the side of the second lens barrel.

[0026] In the split lens according to this application, the gap between the inner surface of the outer cover and the upper surface of the first lens portion gradually decreases from the outer side of the first lens portion inward.

[0027] In the split lens according to this application, the first lens portion and the second lens portion are assembled together by an active calibration process.

[0028] According to another aspect of this application, a camera module is provided, comprising:

[0029] A photosensitive assembly includes: a circuit board and a photosensitive chip electrically connected to the circuit board; and

[0030] The split-type lens as described above is held on the light-sensing path of the photosensitive component.

[0031] The further objectives and advantages of this application will become fully apparent from the following description and accompanying drawings.

[0032] These and other objects, features and advantages of this application are fully apparent from the following detailed description, the accompanying drawings and the claims. Attached Figure Description

[0033] The above and other objects, features, and advantages of this application will become more apparent from the more detailed description of the embodiments of this application in conjunction with the accompanying drawings. The drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof. In the drawings, the same reference numerals generally represent the same components or steps.

[0034] Figure 1 The illustration shows a schematic diagram of a split lens according to an embodiment of this application.

[0035] Figure 2 The illustration shows a partially enlarged schematic diagram of a split lens according to an embodiment of this application.

[0036] Figure 3 The illustration shows a schematic diagram of the first lens portion of a split-type lens according to an embodiment of this application.

[0037] Figure 4 The illustration shows a modified embodiment of the first lens portion of a split lens according to an embodiment of this application.

[0038] Figure 5 The illustration shows a schematic diagram of a modified embodiment of the split lens according to an embodiment of this application.

[0039] Figure 6 The illustration shows a schematic diagram of a camera module according to an embodiment of this application.

[0040] Figure 7 The illustration shows a schematic diagram of a modified implementation of a camera module according to an embodiment of this application.

[0041] Figure 8A and Figure 8B The illustration shows a schematic diagram of the manufacturing process of a split lens according to an embodiment of this application. Detailed Implementation

[0042] Hereinafter, exemplary embodiments according to this application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this application, and not all embodiments of this application. It should be understood that this application is not limited to the exemplary embodiments described herein.

[0043] Application Overview

[0044] As mentioned earlier, as the number of lenses in an optical lens increases, it not only makes the optical design of the lens more and more complex, but also makes the complex optical system very sensitive and fragile. This poses a serious challenge to optical lens manufacturers: the manufacturing yield is declining and the product quality of the optical lens is difficult to guarantee.

[0045] Furthermore, in order to reduce the overall height and size of some optical lenses, glass lenses are introduced in addition to plastic lenses, which undoubtedly further increases the manufacturing difficulty of optical lenses. Therefore, an optimized structural design scheme for optical lenses is needed to reduce the manufacturing difficulty and ensure product yield and quality.

[0046] To address the aforementioned technical problems, the technical concept of this application is as follows: to optimize the stability of the optical lens at the structural design level by heterogeneously modifying the first lens part of the split lens, and to reduce the assembly difficulty of the optical lens by using an active calibration process, so as to ensure its product yield and product quality.

[0047] Based on this, this application provides a split-type lens, comprising: a first lens portion including a first lens barrel and at least one first optical lens mounted in the first lens barrel; and a second lens portion assembled with the first lens portion, including a second lens barrel and at least one second optical lens mounted in the second lens barrel; wherein the first lens barrel includes a first lens barrel body and at least one support arm extending inward from the lower end of the first lens barrel body, the support arm forming a first mounting cavity with the first lens barrel body, and wherein the first optical lens is mounted in the first mounting cavity by attaching to the support arm.

[0048] After introducing the basic principles of this application, various non-limiting embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0049] Exemplary split lens

[0050] like Figures 1 to 3 As shown, a split-type lens 100 according to an embodiment of this application is illustrated, comprising two lens portions: a first lens portion 10 and a second lens portion 20 assembled together with the first lens portion 10. In this embodiment, the first lens portion 10 includes a first lens barrel 11 and at least one first optical lens 12 mounted on the first lens barrel 11, and the second lens portion 20 includes a second lens barrel 21 and at least one second optical lens 22 mounted on the second lens barrel 21.

[0051] In this embodiment, the first optical lens 12 includes an optical region 121 located in the center and a structural region 122 formed around the periphery of the optical region 121. Here, the optical region of the first optical lens 12 refers to the portion of the first optical lens 12 that participates in imaging, and the structural region of the first optical lens 12 refers to the portion of the first optical lens 12 that does not participate in imaging. Typically, the optical region 121 is located in the central region of the first optical lens 12, while the structural region 122 is located in the peripheral portion of the first optical lens 12; that is, the structural region 122 typically forms the outer periphery 123 of the first optical lens 12.

[0052] like Figures 1 to 3As shown, the first lens barrel 11 has a first through hole 101 on one side corresponding to the optical area 121, so that the imaging light passes through the first lens portion 10 and reaches the second lens portion 20. The second lens barrel 21 has a second through hole 201 on its opposite side corresponding to the first through hole 101, so that the imaging light passing through the first lens portion 10 passes through the second through hole 201 and reaches the second optical lens 22.

[0053] Those skilled in the art will understand that the resolving power of the split lens 100 is proportional to the number of optical lenses within a certain range; that is, the higher the resolving power, the more optical lenses are required. Accordingly, the number of the first optical lens 12 and the second optical lens 22 can be configured according to the optical design requirements of the camera module assembled with the split lens 100 and other components. Specifically, the number of the first optical lens 12 and the second optical lens 22 can be 1, 2, 3, or more, and this is not limited to this application.

[0054] In such Figure 1 In the illustrated example, although the split lens 100 includes a second lens portion 20, those skilled in the art should know that in other examples of this application, the specific number of the second lens portions 20 is not limited to this application and can be adjusted according to the optical design requirements of the camera module assembled with the split lens 100 and other components.

[0055] When the split lens 100 is applied to an electronic device, for example, when it is combined with other parts to form a camera module and assembled on the front of the electronic device as a front-facing camera module, the first optical lens 12 of the split lens 100 is closest to the screen of the electronic device; or, when the split lens 100 is combined with other parts to form a camera module and assembled on the back of the electronic device as a rear-facing camera module, the first optical lens 12 of the split lens 100 is closest to the housing of the electronic device. Therefore, in these application scenarios, it is necessary to strengthen and protect the first optical lens 12 to improve the overall structural stability of the split lens 100. Accordingly, in this embodiment, the stability of the first optical lens 12 is improved by designing the first lens barrel 11 on which the first optical lens 12 is mounted and the connection method between the first optical lens 12 and the first lens barrel 11.

[0056] Specifically, such as Figures 1 to 3As shown, the first lens barrel 11 includes a lens barrel body and at least one support arm 112 extending inward from the lower end of the first lens barrel body 111. The support arm 112 cooperates with the first lens barrel body 111 to form a first mounting cavity 102, and the support arm 112 forms the first through hole 101.

[0057] More specifically, the support arm 112 extends radially inward from the periphery of the lower end of the first lens barrel body 111, such as... Figure 2 As shown. In some embodiments of this application, the support arm 112 extends radially inward from the entire periphery of the lower end of the first lens barrel body 111, forming a full-circumferential support arm 112. In other embodiments of this application, the support arm 112 extends radially inward from a portion of the periphery of the lower end of the first lens barrel body 111, forming at least one support arm 112. When the support arm 112 extends radially inward from a portion of the periphery of the lower end of the first lens barrel body 111, preferably, at least two support arms 112 are formed. Furthermore, at least two support arms 112 are uniformly distributed at the lower end of the first lens barrel body 111 so that when the first optical lens 12 presses against the support arm 112, the support arm 112 provides a uniform supporting force to the first optical lens 12.

[0058] In this embodiment, the size of the first mounting cavity 102 is equal to the peripheral size of the first optical lens 12, such that the first optical lens 12 is fitably fitted into the first mounting cavity 102 to stably mount the first optical lens 12 within the first mounting cavity 102. Here, "the size of the first mounting cavity 102 is equal to the peripheral size of the first optical lens 12" means that the size of the first mounting cavity 102 is equal to or slightly larger than the peripheral size of the first optical lens 12.

[0059] To further improve the bonding stability between the first lens barrel 11 and the first optical lens 12, thereby enhancing the reliability of the split lens 100, an adhesive 90 can be applied between the first lens barrel 11 and the first optical lens 12. Accordingly, in this embodiment, the first lens portion 10 further includes an adhesive-receiving groove 103 formed between the first optical lens 12 and the first lens barrel 11, and an adhesive 90 disposed within the adhesive-receiving groove 103 to bond the first optical lens 12 and the first lens barrel body 111 together.

[0060] Specifically, the adhesive groove 103 is formed between the outer peripheral portion 123 of the first optical lens 12 and the first lens barrel body 111. The structural region 122 forms the outer peripheral portion 123 of the first optical lens 12, and the structural region 122 does not affect the first optical lens 12's reception of imaging light. Correspondingly, the adhesive 90 disposed in the adhesive groove 103 formed between the outer peripheral portion 123 of the first optical lens 12 and the first lens barrel body 111 does not affect the first optical lens 12's reception of imaging light.

[0061] Furthermore, the first optical lens 12 and the first lens barrel 11 are designed such that the upper surface of the structural region 122 of the first optical lens 12 is at least a portion higher than the upper surface of the first lens barrel body 111 of the first lens barrel 11, so as to prevent the adhesive 90 disposed in the adhesive groove 103 from overflowing from the adhesive groove 103 and flowing to the optical region 121 of the first optical lens 12, thereby affecting the function of the split lens 100.

[0062] Furthermore, the upper surface of the first lens barrel body 111 extends downwardly from the outer periphery 123 of the first lens barrel body 111 towards its inner periphery. That is, the upper surface of the first lens barrel body 111 gradually rises from the inner periphery of the first lens barrel body 111 towards its outer periphery 123. This can prevent the adhesive 90 provided in the adhesive reservoir 103 from overflowing from the adhesive reservoir 103 and flowing to the outside of the first lens barrel body 111, flowing to the outer side of the first lens barrel body 111, or even flowing along the outer side of the first lens barrel body 111 to the components below the first lens portion 10, causing unintended adhesion between the components.

[0063] In a specific example of this application, the adhesive groove 103 is formed between the upper surface of the structural region 122 of the first optical lens 12 and the upper surface of the first lens barrel body 111. Correspondingly, the adhesive 90 is disposed between the upper surface of the structural region 122 of the first optical lens 12 and the upper surface of the first lens barrel body 111. Figure 1 and Figure 3 As shown.

[0064] In another specific example of this application, the adhesive groove 103 is formed between the lower surface of the structural region 122 of the first optical lens 12 and the lower surface of the first lens barrel body 111. Correspondingly, the adhesive 90 is disposed between the lower surface of the structural region 122 of the first optical lens 12 and the lower surface of the first lens barrel body 111. Figure 4 As shown, this is not limited to the scope of this application.

[0065] When the adhesive 90 is disposed between the lower surface of the structural region 122 of the first optical lens 12 and the lower surface of the first lens barrel body 111, the space for the adhesive 90 is small, making it prone to overflow. Furthermore, the adhesive 90 is close to the second lens portion 20, and the overflowing adhesive 90 will affect the assembly between the first lens portion 10 and the second lens portion 20. Therefore, preferably, the adhesive 90 is disposed between the upper surface of the structural region 122 of the first optical lens 12 and the upper surface of the first lens barrel body 111.

[0066] Furthermore, in this embodiment, the first optical lens 12 has a recessed groove 104 formed on the lower surface of its structural region 122, and the support arm 112 of the first lens barrel 11 extends into the groove 104. This reduces the overall height of the first lens portion 10, and the overall height of the first lens portion 10 can be adjusted by changing the depth of the groove 104 and the thickness of the support arm 112. This increases the design freedom of the gap between the first lens portion 10 and the second lens portion 20, thereby reducing the design difficulty of the split lens 100. For example, the gap between the first lens portion 10 and the second lens portion 20 can be designed to be smaller to further reduce the overall height of the split lens 100; alternatively, the gap between the first lens portion 10 and the second lens portion 20 can be designed to be larger while maintaining the overall height of the split lens 100.

[0067] In this embodiment, the strength of the support arm 112 should be ensured to provide sufficient support for the first optical lens 12. Accordingly, the thickness of the support arm 112 can be designed according to the required strength. In one specific example of this application, the thickness of the support arm 112 is 50 micrometers to 150 micrometers. In other specific examples of this application, the thickness of the support arm 112 can also be set to other values, which is not limited to this application.

[0068] The depth of the groove 104 may be less than the thickness of the support arm 112, or it may be greater than the thickness of the support arm 112. Preferably, the depth of the groove 104 is less than the thickness of the support arm 112 to protect the first optical lens 12.

[0069] Specifically, when the depth of the groove 104 is less than the thickness of the support arm 112, the lower surface of the support arm 112 is lower than the lower surface of the structural region 122 of the first optical lens 12, and the first lens portion 10 is mainly assembled to the second lens portion 20 through the support arm 112. In this way, the first optical lens 12 is suspended above the second lens portion 20, avoiding damage to the first optical lens 12.

[0070] It is worth mentioning that the groove 104, while accommodating at least a portion of the support arm 112, also forms an adhesive-containing groove 103 for accommodating the adhesive 90. Accordingly, in a specific example of this application, the first lens portion 10 further includes the adhesive 90 disposed within the groove 104 for bonding the support arm 112 and the first optical lens 12, such as... Figure 4 As shown.

[0071] It should be noted that when the materials of the first optical lens 12 and the first lens barrel 11 are different, their coefficients of thermal expansion are different. During the process of installing the first optical lens 12 into the first mounting cavity 102 of the first lens barrel 11, under high temperature and high pressure conditions, the deformation of the first optical lens 12 and the first lens barrel 11 are different. The first optical lens 12 is prone to deviating from the preset position, and the first optical lens 12 may break during the process of resisting temperature changes.

[0072] Based on this, in the embodiments of this application, the first optical lens 12 is made of a first material, and the first lens barrel 11 is made of a second material. The ratio of the thermal expansion coefficient of the second material to that of the first material is in the range of 100% to 300%, so as to avoid problems such as the first optical lens 12 deviating from the preset position or breaking due to the different materials of the first optical lens 12 and the first lens barrel 11.

[0073] Specifically, the first optical lens 12 can be made of plastic or glass, and the first lens barrel 11 can be made of metal, plastic, or other materials such as fiberglass. That is, the first material is either glass or plastic, and the second material is either metal, plastic, or other materials such as fiberglass. The first optical lens 12 made of glass has higher transmittance and refractive index, and lower astigmatism, which is beneficial for improving image quality and can reduce the overall height of the split lens 100. Therefore, preferably, the first material is glass.

[0074] In a specific example of this application, the first optical lens 12 is made of glass material with a coefficient of thermal expansion of 8 to 15. The first lens barrel 11 is made of polycarbonate material with 30% added carbon fiber, and the coefficient of thermal expansion of the polycarbonate material is 38 to 42, which is close to the coefficient of thermal expansion of the glass material and less than three times that of the glass material. The polycarbonate material with 30% added carbon fiber has good mold release properties, bromine-free flame retardancy, and high bending resistance, which can protect the first optical lens 12 and improve the stability of the first optical lens 12. Specifically, its density is 1.3 g / cm³. 2 Up to 1.5g / cm 2 The shrinkage rate is 0.25% to 0.45%, the flexural strength is 80 MPa to 100 MPa, the flexural modulus is 4800 MPa to 5200 MPa, and the heat distortion temperature is 120℃ to 140℃.

[0075] In this embodiment, the first lens portion 10 is assembled to the second lens portion 20 in such a manner that it is mounted on the second lens barrel 21. Accordingly, the second lens barrel 21 includes at least one first mounting portion 211 for mounting the first lens portion 10. Furthermore, the first lens portion 10 and the second lens portion 20 are joined together by an adhesive 90. Accordingly, the split lens 100 further includes an adhesive 90 disposed between the first lens portion 10 and the second lens portion 20 for joining the first lens portion 10 and the second lens portion 20.

[0076] It is worth mentioning that, in this embodiment, the first lens portion 10 and the second lens portion 20 are assembled together through an active calibration process. The relative positional relationship between the first lens portion 10 and the second lens portion 20 can be adjusted in real time according to the imaging quality of the camera module assembled with the split lens 100 and other components. This reduces the assembly difficulty of the split lens 100 and improves the assembly accuracy between the first lens portion 10 and the second lens portion 20, thereby improving the product yield and product quality of the split lens 100.

[0077] In a specific example of this application, the first lens portion 10 and the second lens portion 20 are joined together by an adhesive 90 disposed in the gap between the first lens barrel 11 and the second lens barrel 21. That is, the adhesive 90 is disposed in the gap between the first lens barrel 11 and the second lens barrel 21, such as... Figure 1 As shown.

[0078] In another specific example of this application, the first lens portion 10 and the second lens portion 20 are joined together by an adhesive 90 disposed in the gap between the first lens barrel 11 and the second lens barrel 21, and by an adhesive 90 disposed in the gap between the first optical lens 12 and the second lens barrel 21. That is, adhesive is disposed not only in the gap between the first lens barrel 11 and the second lens barrel 21, but also in the gap between the first optical lens 12 and the second lens barrel 21, as shown below. Figure 5 As shown.

[0079] It is worth mentioning that, in this specific example, both the adhesive 90 located between the first optical lens 12 and the second lens barrel 21 and the adhesive 90 located between the first lens barrel 11 and the second lens barrel 21 shrink after curing. Furthermore, due to the different coefficients of thermal expansion between the first optical lens 12 and the first lens barrel 11, the gap between the first optical lens 12 and the second lens barrel 21 is different from the gap between the first lens barrel 11 and the second lens barrel 21. Therefore, the adhesive 90 disposed in the gap between the first optical lens 12 and the second lens barrel 21 has a different thickness and a different degree of shrinkage compared to the adhesive 90 disposed in the gap between the first lens barrel 11 and the second lens barrel 21. During the shrinkage of the adhesive, the outer periphery 123 of the first optical lens 12 is prone to detach from the first lens barrel body 111. In this embodiment, the support arm 112 located below the first optical lens 12 can support the first optical lens 12, reducing the risk of detachment.

[0080] In this specific example, an adhesive 90 is provided in the gap between the first optical lens 12 and the second lens barrel 21. When the coefficient of thermal expansion of the material of the second lens barrel 21 is much greater than that of the material of the first optical lens 12, the first optical lens 12 is easily separated from the second lens barrel 21. Therefore, preferably, the ratio of the coefficient of thermal expansion of the material of the second lens barrel 21 to that of the material of the first optical lens 12 is less than or equal to 300%.

[0081] In this embodiment of the application, to further improve the reliability of the split lens 100, the split lens 100 further includes an outer cover 30 for shielding at least a portion of the first lens portion 10, thereby protecting the first lens portion 10. The outer cover 30 has an opening 301, and the optical region 121 of the first optical lens 12 of the first lens portion 10 corresponds to the opening 301, so as to allow imaging light to reach the optical region 121 of the first optical lens 12 through the opening 301.

[0082] There is a gap between the inner surface of the outer cover 30 and the upper surface of the first lens portion 10, and the gap between the inner surface of the outer cover 30 and the upper surface of the first lens portion 10 gradually decreases from the outer side of the first lens portion 10 inward, which can greatly reduce stray light incident from the top of the outer cover 30. Furthermore, a large space is formed between the top of the outer cover 30 and the side extending downward from the outer side of the top to accommodate the first lens portion 10.

[0083] It is worth mentioning that, in some embodiments of this application, the outer cover 30 is mounted on the second lens portion 20, and the outer cover 30 is not adhesively bonded to the first lens portion 10. Furthermore, there is a gap between the outer surface of the first lens barrel 11 and the inner surface of the outer cover 30 to reduce the impact of changes in the shape or position of the outer cover 30 on the first optical lens 12 of the first lens portion 10. For example, when the outer cover 30 is subjected to external impact, temperature changes, humidity changes, etc., and its position shifts or deforms, since there is no adhesive relationship between the outer cover 30 and the first lens portion 10, the position shift or deformation of the outer cover 30 will not directly affect the first optical lens 12. This improves the reliability of the split lens 100.

[0084] It is also worth mentioning that the gap between the outer surface of the first lens barrel 11 and the inner surface of the outer cover 30 should not be too small, so as to reduce the influence of changes in the shape and position of the outer cover 30 on the first optical lens 12 of the first lens portion 10; the gap between the outer surface of the first lens barrel 11 and the inner surface of the outer cover 30 should also not be too large, so as to avoid the outer cover 30 being too large, resulting in the split lens 100 being too large. In a specific example of this application, the gap between the outer surface of the first lens barrel 11 and the inner surface of the outer cover 30 is 60 micrometers to 400 micrometers.

[0085] In this embodiment, the second lens barrel 21 further includes at least one second mounting portion 212 located on the side of the second lens barrel 21. The outer cover 30 is mounted to the side of the second lens barrel 21 by means of mounting to the second mounting portion 212 of the second lens barrel 21. Figure 1 As shown. Furthermore, the outer cover 30 is attached to the second lens barrel 21 by an adhesive 90, that is, the split lens 100 includes an adhesive 90 disposed in the gap between the outer cover 30 and the second lens barrel 21.

[0086] Specifically, the bottom surface of the outer casing 30 is bonded to the upper surface of the second mounting portion 212 by the adhesive 90. To prevent the adhesive 90 in the gap between the outer casing 30 and the second lens barrel 21 from overflowing and flowing between the first lens portion 10 and the second lens portion 20, an isolation groove 213 is provided between the second mounting portion 212 and the first mounting portion 211 for mounting the first lens portion 10. Furthermore, the upper surface of the second mounting portion 212 is lower than the upper surface of the first mounting portion 211, such as... Figure 1 As shown.

[0087] The outer cover 30 can also be attached to the outer surface of the second mounting part 212 by the adhesive 90 and mounted on the second lens barrel 21. In this way, the outer cover 30 can cover at least a part of the second lens part 20 and play a role in protecting the second lens part 20.

[0088] In this embodiment of the application, preferably, the diameter of the outer cover 30 is greater than or equal to the diameter of the second lens barrel 21, so that when looking from the outer cover 30 along the optical axis set by the split lens 100 towards the second lens portion 20, the outer cover 30 blocks the second lens barrel 21.

[0089] In summary, the split lens 100 described in the embodiments of this application is explained, and the reliability of the split lens 100 is improved by heterogeneously modifying the structure of the split lens 100.

[0090] Exemplary camera module

[0091] like Figure 6 As shown, a camera module 300 according to an embodiment of this application is illustrated, comprising: a photosensitive component 200 and a photosensitive path held on the photosensitive component 200. Figures 1 to 5 The split-type lens 100 shown is intended.

[0092] Specifically, the photosensitive component 200 includes a circuit board 40 and a photosensitive chip 50 electrically connected to the circuit board 40. The circuit board 40 forms the mounting substrate of the photosensitive component 200. The circuit board 40 can be implemented as a printed circuit board or a reinforced flexible circuit board. Furthermore, in some examples, a reinforcing plate (not shown in the figure) can be provided below the circuit board 40, for example, a steel sheet can be provided below the circuit board 40 to strengthen the circuit board 40 and improve the heat dissipation performance of the photosensitive component 200.

[0093] The photosensitive chip 50 has a photosensitive area and a non-photosensitive area formed around the photosensitive area. The photosensitive area of ​​the photosensitive chip 50 is used to receive imaging light from the subject and form an image through photoelectric reaction.

[0094] The photosensitive assembly 200 further includes a bracket 60 and a filter element 70 held on the photosensitive path of the photosensitive chip 50. In one specific example of this application, the filter element 70 is held on the photosensitive path of the photosensitive chip 50 by being mounted on the bracket 60, that is, the filter element 70 is mounted on the bracket 60 and corresponds to the photosensitive area of ​​the photosensitive chip 50. In other examples of this application, the specific implementation of holding the filter element 70 on the photosensitive path of the photosensitive chip 50 is not limited to this application. For example, the filter element 70 may be implemented as a filter film and coated on the surface of one of the optical lenses of the split lens 100 to achieve a filtering effect.

[0095] In this embodiment, the reliability of the split optical lens is improved by heterogeneously configuring it. The split optical lens is referenced above. Figures 1 to 5 The separate optical lens described herein has been described in detail, and therefore, repeated descriptions will be omitted.

[0096] In one modified embodiment of this application, the camera module 300 further includes a support mechanism 400 for mounting the split lens 100 to the photosensitive component 200, such as... Figure 7 As shown, the split lens 100 is mounted on the photosensitive assembly 200 via the support mechanism 400. In one specific embodiment, the support mechanism 400 not only maintains the relative positional relationship between the split lens 100 and the photosensitive assembly 200, but is also adapted to drive the split lens 100 to perform optical performance adjustments (e.g., optical focusing, optical image stabilization, etc.).

[0097] In summary, the camera module 300 based on the embodiments of this application is explained, wherein the split lens 100 has relatively high reliability, which can improve the structural stability and functional stability of the camera module 300.

[0098] Exemplary method for manufacturing a split lens

[0099] This application proposes a method for manufacturing a split lens. The method for manufacturing a split lens according to an embodiment of this application includes: S110, providing a first lens part and a second lens part; S120, assembling the first lens part onto the second lens part; S130, installing an outer cover onto the second lens part.

[0100] In step S110, a first lens portion 10 and a second lens portion 20 are provided. Specifically, the first lens portion 10 includes a first lens barrel 11 and at least one first optical lens 12 mounted on the first lens barrel 11, and the second lens portion 20 includes a second lens barrel 21 and at least one second optical lens 22 mounted on the second lens barrel 21.

[0101] Specifically, in embodiments of this application, the at least one first optical lens 12 is configured as follows: Figure 8A The first optical lens 12 is assembled in the manner shown in the diagram into the first lens barrel 11. Specifically, the first optical lens 12 is first installed in the first mounting cavity 102 of the first lens barrel 11, wherein the first mounting cavity 102 is formed by the first lens barrel body 111 of the first lens barrel and a support arm 112 extending inward from the lower end of the first lens barrel body 111. Next, in this example, an adhesive 90 is applied into the adhesive groove 103 formed by the first lens barrel body 111 and the first optical lens 12 to fix the first optical lens 12 in the first mounting cavity 102 by means of the adhesive 90.

[0102] In other examples of this application, the first optical lens 12 has a recessed groove 104 formed on the lower surface of its structural region, and the support arm 112 of the first lens barrel 11 extends into the groove 104. Furthermore, in this embodiment, the depth of the groove 104 is less than the thickness of the support arm 112. Therefore, in this embodiment, an adhesive for bonding the support arm 112 and the first optical lens 12 can also be provided in the groove 104 to fix the first optical lens 12 within the first mounting cavity 102 using the adhesive.

[0103] It is worth mentioning that the adhesive can also be provided in both the adhesive groove 103 and the recess 104 to improve the bonding stability and bonding strength between the first optical lens 12 and the first lens barrel 11. This is not a limitation of this application.

[0104] In step S120, the first lens portion 10 is assembled to the second lens portion 20. Specifically, an adhesive 90 can be applied to the second lens portion 20, and the first lens portion 10 can be directly bonded to the second lens portion 20 using the adhesive 90. Alternatively, the first lens portion 10 can be assembled to the second lens portion 20 through active calibration.

[0105] When the first lens part 10 is assembled to the second lens part 20 by active calibration, the relative positional relationship between the first lens part 10 and the second lens part 20 needs to be adjusted according to the imaging quality of the camera module assembled with the split lens 100 and other components. Then, the first lens part 10 is fixed to the second lens part 20 by the adhesive 90.

[0106] Specifically, firstly, the first lens portion 10 and the second lens portion 20 are arranged along a set optical axis, such that the first lens portion 10, the second lens portion 20, and the photosensitive component 200 constitute an imageable optical system; then, a test image is acquired from the conductive optical system, and the size to be adjusted is determined based on the characteristic parameters of the test image, so as to adjust the relative position between the first lens portion 10 and the second lens portion 20; next, the adhesive application position is determined based on the relative position between the first lens portion 10 and the second lens portion 20; then, the adhesive 90 is applied at the adhesive application position, and the first lens portion 10 is assembled to the second lens portion 20 by the adhesive 90.

[0107] Accordingly, step S120 includes: S121, arranging the first lens portion 10 and the second lens portion 20 along a set optical axis, such that the first lens portion 10, the second lens portion 20, and the photosensitive component 200 constitute an imageable optical system; S122, acquiring a test image from the activated optical system, and determining the size to be adjusted based on the characteristic parameters of the test image, so as to adjust the relative position between the first lens portion 10 and the second lens portion 20; S123, determining the adhesive application position based on the relative position between the first lens portion 10 and the second lens portion 20; and S124, applying adhesive 90 at the adhesive application position, and assembling the first lens portion 10 to the second lens portion 20 by means of the adhesive 90.

[0108] In step S121, the first lens portion 10 and the second lens portion 20 are arranged along a predetermined optical axis, such that the first lens portion 10, the second lens portion 20, and the photosensitive component 200 constitute an image-capable optical system. During this process, the positions of the first lens portion 10, the second lens portion 20, and the photosensitive component 200 are not fixed and can move along the predetermined optical axis.

[0109] In step S122, a test image is acquired from the activated optical system, and the size to be adjusted is determined based on the feature parameters of the test image to adjust the relative position between the first lens portion 10 and the second lens portion 20. Specifically, test images can be acquired multiple times from the activated optical system, and the relative position between the first lens portion 10 and the second lens portion 20 can be adjusted multiple times based on the test images. More specifically, after acquiring the test image from the activated optical system, the feature parameters (e.g., peak value, field curvature, astigmatism, etc.) of the test image can be calculated using image algorithms such as Spatial Frequency Response (SFR) and Modulation Transfer Function (MTF) to evaluate the imaging quality of the optical system. Based on the feature parameters of the test image, the size to be adjusted for the first lens portion 10 or the second lens portion 20 is determined. Then, the relative position between the first lens portion 10 and the second lens portion 20 is adjusted in real time and actively according to the size to be adjusted for the first lens portion 10 or the second lens portion 20. After one or more adjustments, once the feature parameters of the test image reach the target value, the relative position between the first lens portion 10 and the second lens portion 20 can be determined.

[0110] In step S123, the adhesive application position is determined based on the relative position between the first lens portion 10 and the second lens portion 20. Preferably, the surfaces of the first lens portion 10 and the second lens portion 20 corresponding to the adhesive application position are planar to provide active calibration space and adhesive application space, and to ensure the bonding strength between the first lens portion 10 and the second lens portion 20.

[0111] In step S124, adhesive 90 is applied at the adhesive application location, and the first lens portion 10 is assembled to the second lens portion 20 using the adhesive 90. Specifically, after applying adhesive 90 at the adhesive application location, the first lens portion 10 is moved closer to the second lens portion 20 until the first lens portion 10 is bonded to the second lens portion 20 using the adhesive 90. After the adhesive 90 cures, the first lens portion 10 is fixed to the second lens portion 20.

[0112] It is worth mentioning that there is a gap between the first lens portion 10 and the second lens portion 20. In this embodiment, the gap size between the first lens portion 10 and the second lens portion 20 is 20 micrometers to 100 micrometers. Preferably, the gap size between the first lens portion 10 and the second lens portion 20 is 60 micrometers to 70 micrometers. This gap size is beneficial for active calibration between the first lens portion 10 and the second lens portion 20, thereby reducing the optical design difficulty of the split lens 100.

[0113] In step S130, the outer cover 30 is installed on the second lens portion 20, such as... Figure 8B As shown. Specifically, the outer cover 30 can be precisely assembled onto the second lens barrel 21 of the second lens portion 20 without requiring real-time adjustment of the relative position between the outer cover 30 and the second lens portion 20. Accordingly, the gap between the outer cover 30 and the second lens component is smaller than the gap between the first lens component and the second lens component. The gap between the outer cover 30 and the second lens component is 10 micrometers to 40 micrometers.

[0114] In summary, the method for manufacturing a split lens based on the embodiments of this application has been clarified, wherein the split lens 100 formed by the manufacturing method improves the reliability of the camera module while meeting the functional requirements of the camera module.

[0115] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

Claims

1. A split lens characterized by, Comprising: a first lens part including a first lens barrel and at least one first optical lens mounted to the first lens barrel; and a second lens part assembled with the first lens part, including a second lens barrel and at least one second optical lens mounted to the second lens barrel; wherein the first lens barrel includes a first lens barrel body and at least one support arm extending inwardly from a lower end of the first lens barrel body, the support arm cooperating with the first lens barrel body to form a first mounting cavity, wherein the first optical lens is mounted in the first mounting cavity in a manner of being attached to the support arm; a cover for shielding at least a portion of the first lens part, wherein the first optical lens includes an optical area located in a middle portion and a structure area formed circumferentially around a periphery of the optical area, the cover having an opening, the optical area of the first optical lens of the first lens part corresponding to the opening; wherein there is a gap between an outer side of the first lens barrel and an inner surface of the cover, the cover is not in a bonding relationship with the first lens part, and the cover is mounted to a side of the second lens barrel. The support arm extends radially inwardly from a periphery of the lower end of the first lens barrel body.

2. The split lens according to claim 1, wherein, The first optical lens is snugly fitted in the first mounting cavity.

3. The split lens of claim 2, wherein, The first lens part further includes a glue groove formed between an outer periphery of the first optical lens and the first lens barrel body, and an adhesive provided in the glue groove to bond the first optical lens and the first lens barrel body together by the adhesive.

4. The split lens of claim 2, wherein, The first optical lens includes an optical area located in a middle portion and a structure area formed circumferentially around a periphery of the optical area, the structure area forming an outer periphery of the first optical lens, wherein an upper surface of the structure area is higher than at least a portion of an upper surface of the first lens barrel body.

5. The split lens of claim 4, wherein, The upper surface of the first lens barrel body extends downwardly and obliquely from an outer periphery of the first lens barrel body to an inner periphery thereof.

6. The split lens of claim 5, wherein, The first optical lens has a groove concavely formed in a lower surface of the structure area thereof, the support arm of the first lens barrel extending into the groove.

7. The split lens of claim 2, wherein, The thickness of the support arm is 50-150 micrometers.

8. The split lens according to claim 7, wherein, The depth of the groove is less than the thickness of the support arm.

9. The split lens of claim 7, wherein, The depth of the groove is 50-100 micrometers.

10. The split lens of claim 9, wherein, The first lens part further includes an adhesive provided in the groove and used to bond the support arm and the first optical lens.

11. The split lens of claim 7, wherein, The first optical lens is made of a first material, the first lens barrel is made of a second material, and the ratio of the coefficient of thermal expansion of the second material to the coefficient of thermal expansion of the first material ranges from 100% to 300%.

12. The split lens of claim 1, wherein, The first material is a glass material or a plastic material, and the second material is a plastic material.

13. The split lens of claim 12, wherein, The gap between the inner surface of the cover and the upper surface of the first lens part gradually decreases inwardly from an outer side of the first lens part.

14. The split lens of claim 1, wherein, The first lens part and the second lens part are assembled together by an active alignment process.

15. The split lens of claim 1, wherein, Comprising:

16. An image capture module, comprising: a photosensitive assembly including a circuit board and a photosensitive chip electrically connected to the circuit board; and a lens barrel including a lens barrel body and at least one optical lens mounted to the lens barrel body, ​ The split lens as claimed in any one of claims 1 to 15, which is held on a light path of the optical assembly.

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