Split lens and method of assembling the same

Abstract

The present application provides a split lens and an assembling method thereof, wherein the split lens comprises a first lens assembly, a second lens assembly and an outer black object, the first lens assembly comprises at least one upper group lens and an inner black object for fixing the at least one upper group lens, the inner black object of the first lens assembly is fixed with the second lens assembly, the outer black object has an assembling space, the inner black object of the first lens assembly is covered in the assembling space of the outer black object, the inner black object has an inner black object outer wall, the outer black object has an outer black object inner wall, the transverse dimension of the inner black object outer wall of the inner black object is smaller than the transverse dimension of the outer black object inner wall of the outer black object, so that the first lens assembly has a certain adjustment space to avoid the interference between the outer black object and the inner black object.

Description

Technical Field

[0001] This invention relates to the field of optical lenses, and more particularly to a split lens and its assembly method. Background Technology

[0002] As living standards improve, consumers have increasingly higher demands for mobile phone camera functions. On the other hand, consumers prefer more compact electronic devices; the pursuit of high screen-to-body ratios and minimally protruding back covers in modern mobile phones presents new challenges to camera modules. To achieve better camera performance, zoom, image stabilization, high pixel count, large aperture, and smaller size have become irreversible development trends for camera modules, and consumers' demands for image quality from these modules continue to rise.

[0003] Existing split-lens solutions, through active calibration of the two lens components before assembly, can compensate for errors introduced during lens forming and assembly. Therefore, split-lens solutions can improve the assembly yield of multi-element (7P) or higher lenses, improve the assembly yield of periscope lenses, and achieve high-yield assembly of large-aperture lenses. However, due to the need to assemble multiple lens components, split-lens solutions sometimes fail to meet reliability requirements compared to integrated solutions. Therefore, specific improvements to the reliability of split-lens solutions are sometimes necessary. Industry-standard reliability testing for lenses typically includes mechanical shock and drop tests, as well as temperature tests such as high and low temperature shock and high-temperature cycling. As the industry upgrades, these tests will become increasingly stringent to ensure high product yield and reliability. Sometimes, due to unreasonable lens structure design, split-lens solutions may exhibit defects such as easy detachment and performance degradation after reliability testing.

[0004] It's worth mentioning that glass lenses have high light transmittance and a high refractive index. Compared to plastic lenses, glass lenses can reduce the overall height of the lens. Therefore, lenses with glass lenses have certain advantages and can meet consumer needs. However, due to the high density and mass of glass, all-glass lenses are not currently the mainstream solution for mobile phone lenses. For split lenses, the upper lens group can be made of glass, thereby reducing the overall height of the lens. Split lenses can also compensate for defects such as eccentricity and tilt of glass lenses through active calibration.

[0005] On the other hand, because glass lenses are manufactured using a glass preform molding process, which requires maintaining a high temperature and pressing the glass preform into shape using a mold, if the structural area of ​​the glass lens is too large relative to the optical area—that is, if the structural area that needs to be pressed is too large—it is prone to cracking after cooling. Therefore, the structural area of ​​glass lenses is usually not very large. The structural area in a typical mobile phone glass lens is generally around 0.3-0.6mm, while for the same plastic lens, the structural area can be 0.8-1.5mm. Therefore, existing structures use adhesive on the sidewalls of the lens to compensate for the bonding strength when the structural area is short.

[0006] On the other hand, in various temperature-related reliability tests, the increased ambient temperature causes overall thermal expansion of the lens. Existing technologies typically use adhesive on the outer and bottom surfaces of the lens to fix it to the lower element. This causes changes in the dimensions of the adhesive, lens barrel, and lens itself. However, under normal circumstances, the CTE value of the adhesive is 90-110, the CTE of glass lenses is around 10, the CTE of plastic lenses is around 60, and the CTE of the lower element's black components is around 80. Under high temperatures, the deformation of the adhesive material is the greatest. If the upper element is made of glass, because glass itself has a lower CTE value, under high temperatures, such as 85 degrees Celsius, the deformation of the lens is much less than the deformation of the adhesive material. This could cause the adhesive fixing position to shift from the adhesive fixing position of the lower element lens, potentially leading to the risk of the lens detaching. When the upper lens is made of glass, the bonding area will be smaller. Existing structures use adhesive on the sidewall of the lens to compensate for bonding strength when the structural area is short. However, after the adhesive is used for compensation, the change in the size of the adhesive sidewall can cause the lens to be pulled by the adhesive, resulting in the lens falling off, or the lens position may change, causing eccentricity and other risks that affect optical performance. The risk of lens falling off due to temperature changes will also increase.

[0007] Furthermore, in the assembly process of existing lenses, the lens elements often interfere with each other due to their size relationship. In particular, if the positional relationship between the later-assembled lens elements and the already fixed lens elements interferes, collisions, damage, or damage to the already fixed parts may occur. Therefore, the size relationship of each component during assembly also seriously affects the product yield and production efficiency. Summary of the Invention

[0008] A key advantage of this invention is that it provides a split lens and its assembly method, wherein the split lens includes a first lens component, a second lens component, and an outer black object, wherein the first lens component is fixed to the second lens component, the outer black object covers the upper end of the first lens component, and the outer black object has an assembly space, allowing the first lens component to have a certain adjustment space in a preset stage with the second lens component, thereby facilitating the assembly of the outer black object.

[0009] Another advantage of the present invention is that it provides a split lens and its assembly method, wherein the first lens component can be adjusted in any direction and angle in space within the assembly space allowed by the outer black object, thereby avoiding interference between the outer black object and the first lens component during the assembly process and improving assembly efficiency.

[0010] Another advantage of the present invention is that it provides a split lens and a method for assembling the same, wherein the first lens component includes at least one upper lens element and an inner black object for fixing the upper lens element, wherein the upper lens element is fixed to the second lens component by the inner black object by adhesive, and the ratio of the CTE values ​​of the upper lens element and the inner black object is less than or equal to 300%, which is beneficial to improving the bonding stability of the split lens.

[0011] Another advantage of the present invention is that it provides a split lens and a method for assembling the same, wherein the first lens component and the second lens component are bonded together with adhesive, which helps to reduce the problem of decreased bonding performance of split lenses during testing.

[0012] Another advantage of the present invention is that it provides a split lens and a method for assembling the same, wherein the manufacturing method of the split lens can effectively enhance the reliability of lens bonding.

[0013] Another advantage of the present invention is that it provides a split lens and a method for assembling the same, wherein the method for manufacturing the split lens can effectively reduce the performance degradation of the split lens due to experimentation.

[0014] Another advantage of the present invention is that it provides a split lens and a method for assembling the same, wherein the manufacturing method of the split lens can effectively reduce the weakening of the bonding strength of the retaining member due to temperature shock.

[0015] Another advantage of the present invention is that it provides a split lens and a method for assembling the same, wherein the manufacturing method of the split lens can effectively increase the bonding strength of the upper and lower groups of the glass + plastic split lens.

[0016] Another advantage of the present invention is that it provides a split lens and a method for assembling the same, wherein the manufacturing method of the split lens can prevent glue from overflowing and prevent the glue from affecting the lens imaging.

[0017] According to one aspect of the present invention, a split lens of the present invention, capable of achieving the aforementioned and other objects and advantages, comprises:

[0018] A first lens component, the first lens component including at least one upper group lens and an inner black object for fixing the at least one upper group lens;

[0019] A second lens component, wherein the inner black part of the first lens component is fixed to the second lens component; and

[0020] An outer black object has an assembly space, and the inner black object of the first lens component is covered by the assembly space of the outer black object. The inner black object has an outer wall and an inner wall, wherein the lateral dimension of the outer wall of the inner black object is smaller than the lateral dimension of the inner wall of the outer black object, allowing the first lens component to have a certain adjustment space to avoid interference between the outer black object and the inner black object.

[0021] According to one embodiment of the present invention, the assembly space of the outer black part allows the inner black part of the first lens component to have 5° of adjustment freedom in the X-axis, Y-axis or Z-axis direction.

[0022] According to one embodiment of the present invention, the inner black object fixes the upper lens group to the second lens component, and the ratio of the CTE value of the inner black object to the CTE value of the upper lens group is less than or equal to 6, so as to prevent the risk of easy detachment of the lens and the second lens component due to the adhesive material on the surface of the lens and the second lens component under temperature changes.

[0023] According to one embodiment of the present invention, the second lens component includes at least one lower group lens and a lens barrel for fixing the lower group lens, wherein the lens barrel includes a support platform and a carrier platform, wherein the first lens component is fixed to the upper end face of the support platform of the lens barrel, the outer black object is fixed to the carrier platform of the lens barrel, and the support platform extends integrally upward from the inner side of the carrier platform.

[0024] According to one embodiment of the present invention, the support platform has an upper surface of the support platform and a side surface of the support platform, wherein the upper surface of the support platform is the upper surface of the support platform, the side surface of the support platform is located on the side of the support platform, and the outer black object is tightly fitted with the side surface of the support platform.

[0025] According to one embodiment of the present invention, the lateral dimension of the inner sidewall of the outer black object is 5-10 μm smaller than the lateral dimension of the side of the support platform of the lens barrel, so as to ensure that the outer black object can be well assembled to the outside of the lens barrel by mechanical assembly.

[0026] According to one embodiment of the present invention, the inner black object has a fixed receiving cavity with the opening of the fixed receiving cavity facing the backlight side, and the first lens component further includes at least one upper lens fixing adhesive, which fixes the upper lens to the fixed receiving cavity of the inner black object.

[0027] According to one embodiment of the present invention, at least one adhesive groove is further provided between the upper lens and the inner black object, the upper lens fixing adhesive is located in the adhesive groove of the inner black object, the adhesive groove is connected to the fixing receiving cavity of the inner black object, wherein the adhesive material forming the upper lens fixing adhesive is applied to the adhesive groove, and the adhesive material is cured to form the upper lens fixing adhesive.

[0028] According to one embodiment of the present invention, the upper lens group of the first lens component includes a light-transmitting area and a structural area integrally extending outward from the light-transmitting area, wherein the inner black object of the first lens component is fixedly connected to the structural area of ​​the upper lens group.

[0029] According to one embodiment of the present invention, the inner black object includes an inner black object ring and an inner black object edge cover extending inward from the upper end of the inner black object ring, the inner black object edge cover being located above the structural area of ​​the upper lens group.

[0030] According to one embodiment of the present invention, it further includes at least one lens adhesive unit, wherein the lens adhesive unit is disposed between the first lens component and the second lens component, and the first lens component and the second lens component are fixedly connected by the lens adhesive unit.

[0031] According to one embodiment of the present invention, the outer black object includes an outer black object ring and an extension arm extending from the outer black object ring toward the optical axis, wherein the outer black object ring is fixed to the second lens component, and the extension arm of the outer black object covers the structural area of ​​the inner black object and the upper lens group to protect the upper lens group and the inner black object.

[0032] According to one embodiment of the present invention, the outer black object further includes a blocking arm, wherein the blocking arm extends obliquely downward from the extension arm of the outer black object toward the optical axis, and the blocking arm of the outer black object is located inside the inner black object cover of the inner black object, thereby blocking external stray light and reducing the entry of external dust into the interior of the first lens component.

[0033] According to one embodiment of the present invention, the lens further includes at least one first adhesive and at least one second adhesive, wherein the first adhesive is located between the inner black object and the outer black object, and the second adhesive is located between the outer black object and the lens barrel, wherein the inner black object and the outer black object are fixedly bonded by the first adhesive, and the outer black object and the lens barrel are fixedly bonded by the second adhesive.

[0034] According to one embodiment of the present invention, when the outer black object is mounted on the support stage of the lens barrel, a glue storage space is formed between the inner wall of the outer black object and the outer wall of the inner black object, wherein excess glue material forming the first adhesive and the second adhesive can be accommodated in the glue storage space, thereby helping to prevent glue material from overflowing.

[0035] According to another aspect of the present invention, the present invention further provides a method for assembling a split lens, wherein the assembly method includes the following steps:

[0036] S1. Assemble a first lens component, wherein at least one upper group of lenses is fixed to an inner black object;

[0037] S2. Within the assembly space allowed by an outer black object, laterally adjust the relative position of the first lens component and the second lens component to meet the active calibration requirements of the split lens, and fix the first lens component and the second lens component; and

[0038] S3. Install the outer black object onto the second lens component.

[0039] According to an embodiment of the present invention, in step S1 of the above-described assembly method of a split lens, an adhesive is applied to an adhesive groove between an inner black object and an upper lens group, and the inner black object and the upper lens group are bonded and fixed by the adhesive to obtain a first lens component.

[0040] According to an embodiment of the present invention, in step S1 of the above-described assembly method of the split lens, the inner black part and the upper lens group are inverted, and the upper lens group is installed in a fixed receiving cavity of the inner black part; the upper lens group and the inner black part are kept inverted, and adhesive material is applied to the adhesive groove between the inner black part and the upper lens group so that the adhesive material is bonded and formed into an upper lens fixing adhesive in the adhesive groove, wherein the adhesive material does not protrude from the adhesive groove.

[0041] According to one embodiment of the present invention, an adhesive is applied to an upper end face of the inner black object, wherein the adhesive applied to the upper end face bonds to form a first adhesive, thereby fixing the inner black object to the outer black object; and an adhesive is applied to a support platform of a lens barrel of the second lens component, wherein the adhesive applied to the support platform bonds to form a second adhesive, thereby fixing the outer black object to the second lens component.

[0042] The further objects and advantages of the invention will become fully apparent from the following description and accompanying drawings.

[0043] These and other objects, features and advantages of the present invention will become fully apparent from the following detailed description and accompanying drawings. Attached Figure Description

[0044] Figure 1 This is an overall schematic diagram of a split lens according to a first preferred embodiment of the present invention.

[0045] Figure 2 This is an exploded view of the split lens according to the first preferred embodiment of the present invention.

[0046] Figures 3A to 3C This is a schematic diagram of the assembly process of the split lens according to the first preferred embodiment of the present invention.

[0047] Figure 4A and Figure 4B This is a schematic diagram of the preset stage adjustment of the split lens according to the first preferred embodiment of the present invention.

[0048] Figure 5 This is a schematic diagram of the structure of a first lens component of the split lens according to the first preferred embodiment of the present invention.

[0049] Figure 6 This is a schematic diagram of the structure of an outer black object of the split lens according to the first preferred embodiment of the present invention.

[0050] Figure 7A and Figure 7BThis is a schematic diagram of the bonding of the first lens component and the second lens component of the split lens according to the first preferred embodiment of the present invention.

[0051] Figure 8A and Figure 8B This is a schematic diagram showing the bonding of the outer black object of the split lens to the first lens component and the first lens component according to the first preferred embodiment of the present invention.

[0052] Figure 9 This is a flowchart illustrating a method for assembling a split lens according to a preferred embodiment of the present invention. Detailed Implementation

[0053] The following description is intended to disclose the present invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0054] Those skilled in the art should understand that, in the disclosure of this invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting this invention.

[0055] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0056] Referring to the accompanying drawings of this invention Figures 1 to 8A and Figure 8BAs shown, a split lens according to a first preferred embodiment of the present invention will be described below. The split lens includes a first lens component 10, a second lens component 20, and an outer black element 30, wherein the first lens component 10 is located above the second lens component 20, and the outer black element 30 fixes the first lens component 10 to the upper end of the second lens component 20. Preferably, in this preferred embodiment of the present invention, the optical axis direction of the first lens component 10 and the optical axis direction of the second lens component 20 are adapted to each other. That is, the first lens component 10 is located in front of the second lens component 20 along the optical axis direction, the first lens component is the upper lens assembly of the split lens, and the second lens component is the lower lens assembly of the split lens.

[0057] The first lens component 10 includes at least one upper lens element 11 and an inner lens element 12 for fixing the at least one upper lens element 11. The inner lens element 12 is an optical lens element. The at least one upper lens element 11 is fixedly held inside the inner lens element 12, and the inner lens element 12 then fixes the upper lens element 11 to the second lens component 20. The second lens component 20 includes at least one lower lens element 21 and a lens barrel 22 for fixing the lower lens element 21. The lens barrel 22 fixedly supports the lower lens element 21 and the first lens component 10 based on an optical axis direction. It is worth noting that in this preferred embodiment of the invention, the number of upper lens elements 11 in the first lens component 10 can be one, two, or more. The number of upper lens elements 11 is merely illustrative and not a limitation.

[0058] The outer black element 30 is disposed on the upper end of the second lens component 20 and fixes the first lens component 10. The outer black element 30 has an assembly space 301, and the inner black element 12 of the first lens component 10 is covered by the assembly space 301 of the outer black element 30. The inner black element 12 has an inner black element outer wall 1201, wherein the inner black element outer wall 1201 is formed on the outer edge side surface of the inner black element 12. The outer black element 30 further has an outer black element inner wall 302, wherein the inner black element inner wall 302 is formed on the inner surface of the outer black element 30. The assembly space 301 is formed by the inner wall 302 of the outer black object 30 surrounding it. Assuming the optical axis direction (Z-axis) of the split lens is longitudinal, and the direction perpendicular to the optical axis is transverse (X-axis and Y-axis), the transverse dimension of the inner wall 302 of the outer black object 30 is larger than the outer wall 1201 of the inner black object 12. That is, the transverse dimension of the assembly space 301 of the outer black object 30 is larger than the transverse dimension of the inner black object 12. The outer black object 30 is placed over the inner black object 12. The assembly space 301 of the outer black object 30 allows the first lens component 10 to have a certain adjustment space along the X-axis, Y-axis, and Y-axis directions, such as parallel adjustment or rotation angle adjustment, so that the outer black object 30 will not interfere with the inner black object 12 of the first lens component 10 during installation.

[0059] Preferably, in this preferred embodiment of the present invention, the lateral dimension of the inner wall 302 of the outer black object is greater than the lateral dimension of the outer wall 1201 of the inner black object 12, wherein the assembly space 301 of the outer black object 30 allows the first lens component 10 to have 5° of adjustment freedom in the X-axis, Y-axis or Z-axis direction, or a displacement adjustment space of 30-80 μm in any spatial direction.

[0060] It is worth mentioning that, in this preferred embodiment of the present invention, the inner black object 12 and the outer black object 30 are both optical lens black objects, wherein the upper lens group 11 of the first lens component 10 is fixed to the second lens component 20 by the inner black object 12 and the outer black object 30.

[0061] The problem addressed in this application is related to the prior art.

[0062] In order to reduce the overall height of the lens and increase its resolving power, existing technologies in this field often use glass lenses for the first lens element, i.e., the upper lens group. Since glass lenses are inorganic materials, while the lens barrel that holds the upper lens group is usually made of organic materials such as plastic, it is difficult to match the bonding strength between the two. It is also difficult to improve the bonding strength of the adhesive material through modifications. On the other hand, in high-temperature and high-pressure environments, increased external temperatures can easily cause the internal lens elements to expand. Different materials have different coefficients of thermal expansion. If the lens element is fixed to the second lens component by adhesive, and the adhesive itself expands when heated, the CTE value of the adhesive is generally 30-100, while that of the glass lens is around 10. Therefore, the deformation of the adhesive is greatest under high-temperature conditions. If the upper lens group is made of glass, because glass has a lower CTE value, the deformation of the lens is much smaller than that of the adhesive under high temperatures, such as 85 degrees Celsius. This causes a misalignment between the adhesive fixing position on the lens element and the adhesive fixing position on the black object of the second lens component, thus increasing the risk of lens breakage. When the upper lens is made of glass, the bonding strength is weakened, and the lens is more susceptible to breakage due to temperature changes.

[0063] Accordingly, in this preferred embodiment of the present invention, the upper lens group 11 is adhered to the inner side of the inner black object 12, and the inner black object 12 is bonded and fixed above the second lens component 20. That is, the upper lens group 11 is fixed to the second lens component 20 by the inner black object 12, and the ratio of the CTE value of the inner black object 12 to the CTE value of the upper lens group 11 is less than or equal to 300%, so as to prevent the risk of easy detachment due to the adhesive material on the surface of the lens and the second lens component under temperature changes.

[0064] Furthermore, in this field, to ensure consistency in lens barrel injection molding, mainstream solutions require the selection of materials with low shrinkage. Therefore, the shrinkage rate of most mainstream materials is around 0.5%-1.5%, which is beneficial for the moldability of the finished product. On the other hand, for lens barrel demolding, materials with low viscosity and good demolding performance are required. In summary, in the field of optical lenses, there are not many general-purpose materials for lens barrels; most are PC. On the other hand, because PC is a polymer material, the CTE of many components in the formulation is around 70-100. In the past, for 4-6 element solutions, since the lens sizes were not very large, the performance of the optical system composed of the lenses was not significantly affected by small dimensional changes. However, with the advent of high-end 7-8 element solutions and large aperture solutions, the corresponding optical system needs to be adjusted. The lens diameter and optical sensitivity are larger and more sensitive than in 4-6 element solutions. Therefore, there are now reliability improvement solutions in the industry for these high-end lens solutions.

[0065] Similarly, in high-temperature and high-pressure environments, increased external temperatures can easily cause the lens barrel to expand. Unlike adhesive, which, due to its quantity, typically only exhibits greater deformation in the length direction compared to the width direction, the lens barrel, as the outer housing of the lens, has the largest dimension among lens components and thus exhibits relatively greater deformation in all directions compared to other parts. For example, in a split-type lens design, the outer side of the first lens component is fixed to the second lens component with adhesive. When heated, all three components—the adhesive, the first lens component, and the second lens component—expand. Generally, because the lower lens component has a larger overall volume, its deformation is often the greatest. In this case, there is a difference in deformation between the adhesive and the lower lens component, and also between the adhesive and the bonded upper lens component. If the adhesive is considered as a single quantity, it will cause relative deformation errors between the lower and upper lens components, leading to deterioration in the lens's optical performance and bonding properties.

[0066] In this preferred embodiment of the present invention, the upper lens 11 of the first lens component 10 can be a glass lens or a lens of other materials. By selecting mutually compatible materials, the ratio of the CTE value of the inner black object 12 to the CTE value of the upper lens 11 is less than or equal to 300%, so as to prevent the risk of lens breakage caused by high and low temperature impacts on the inner black object 12 and the upper lens 11.

[0067] It is worth mentioning that the inner black element 12 can provide a buffering effect in temperature shock and mechanical shock reliability tests. Because the inner black element 12 increases the bonding length of the adhesive, and the inner black element 12 is installed on the outside of the upper lens group 11, if it is subjected to stress or external force, the inner black element 12 itself can more easily compensate for stress and external force through bending deformation, thereby ensuring optical performance.

[0068] In another preferred embodiment, the CTE ratio of the inner black part 12 and the upper lens 11 is controlled within 2-6 times. The inner black part 12, as a component that extends the lateral dimension of the upper lens 11, can increase the bonding area, provide more bonding space, enhance the bonding strength of the upper lens 11, and prevent the upper lens 11 from falling off under the influence of external force.

[0069] In existing technical solutions, adhesive is applied to the sidewalls of the upper lens group. Because this adhesive has a higher CTE value than the lens itself, its size changes more drastically with temperature variations. This can easily lead to displacement of the upper lens group due to tensile stress from the adhesive sidewalls during routine reliability temperature tests, resulting in an eccentric displacement of the upper lens group relative to the lower lens group. In this preferred embodiment of the invention, adhesive can be applied to the bottom surface of the inner black object 12, increasing the bottom bonding area and eliminating the need for sidewall adhesive compensation.

[0070] As an example, in this preferred embodiment of the present invention, when the upper lens group 11 is made of plastic, the inner black element 12 is also made of plastic; or a mixture of plastic and mineral fiber; or glass fiber. When the upper lens group 11 is made of glass, the inner black element 12 can be made of metal or plastic with a high proportion of mineral fiber; or glass fiber, to meet the requirement that the CTE values ​​of the upper lens group 11 and the inner black element 12 are similar.

[0071] Preferably, in this preferred embodiment of the invention, when the upper lens group 11 is a glass lens, the CTE value of the glass lens is between 8 and 15; correspondingly, the inner black part 12 is a PC material with 30% added carbon fiber, which has good demolding properties and is bromine-free flame retardant, wherein the density of the material is 1.3-1.5 g / cm³. 2The material exhibits a shrinkage rate of 0.25-0.45%, a flexural strength of 80-100 MPa, a flexural modulus of 4800-5200 MPa, and a heat distortion temperature of 120-140℃. It requires high flexibility and impact resistance. Furthermore, the preferred material has a CTE of 38-42 to achieve a CTE value close to that of glass lenses. Therefore, the ratio of the CTE value of the inner black element 12 to the CTE value of the upper lens group 11 is less than or equal to 300%.

[0072] like Figure 2 As shown, the upper lens group 11 of the first lens component 10 includes a light-transmitting area 111 and a structural area 112 extending outward integrally from the light-transmitting area 111, wherein the inner black object 12 of the first lens component 10 is fixedly connected to the structural area 112 of the upper lens group 11.

[0073] like Figures 3A to 3C The diagram illustrates the assembly process of the split lens, which includes: S1, the assembly stage of the first lens component; S2, the pre-setting stage of the first lens component and the second lens component; and S3, the assembly stage of the outer black object. In step S1, the upper lens group 11 is assembled to the inner black object 12, and the upper lens group 11 and the inner black object 12 are fixed together by adhesive. In step S2, based on the assembly space 301 of the outer black object 30, the first lens component 10 is pre-set at the upper end of the second lens component 20, and after calibrating the relative positions of the first lens component 10 and the second lens component 20, the first lens component 10 is fixed at the upper end of the second lens component 20. In step S3, an outer black object 30 is prepared and assembled to the corresponding position of the second lens component 20 to obtain the split lens.

[0074] like Figure 4A and Figure 4B As shown, during the pre-setting process of the first lens component 10 and the second lens component 20, the relative positional relationship of the first lens component 10 and the second lens component 20 is actively calibrated. The inner black element 12 of the first lens component 10 can move along a spatial direction (X-axis, Y-axis, or Z-axis) within the allowable space of the assembly space 301 of the outer black element 30 to achieve a suitable light transmission effect. The calibrated first lens component 10 and second lens component 20 are fixed by adhesive to facilitate the subsequent assembly of the outer black element 30.

[0075] The lens barrel 22 of the second lens component 20 includes a support platform 221 and a carrier platform 222, wherein the first lens component 10 is fixed to the upper end face of the support platform 221 of the lens barrel 22, and the outer black object 30 is fixed to the carrier platform 222 of the lens barrel 22. The support platform 221 of the lens barrel 22 protrudes upward from the carrier platform 222, that is, the support platform 221 extends upward integrally from the inner side of the carrier platform 222. The support platform 221 of the lens barrel 22 has an upper upper surface 2211 and a side surface 2212, wherein the upper upper surface 2211 is the upper surface of the support platform 221, and the side surface 2212 is located on the side of the support platform 221. The first lens component 10 is fixed to the upper surface 2211 of the support platform 221. The outer black object 30 is tightly fitted to the side surface 2212 of the support platform 221, that is, the lateral dimension of the inner sidewall 302 of the outer black object 30 is slightly smaller than the lateral dimension of the side surface 2212 of the support platform 221.

[0076] Preferably, the lateral dimension of the inner wall 302 of the outer black object 30 is 5-10 μm smaller than the lateral dimension of the side surface 2212 of the support platform 221 of the lens barrel 22, so as to ensure that the outer black object 30 can be mechanically assembled to the outside of the lens barrel 22.

[0077] In other words, when the outer black object 30 is in a tight fit with the support platform 221 of the lens barrel 22, in the preset stage, the first lens component 10 is allowed to adjust its position within the range of the upper surface 2211 of the support platform 221 of the lens barrel 22 to meet the needs of the split lens for active adjustment.

[0078] like Figure 1 and Figure 5 As shown, the inner black object 12 has a fixed receiving cavity 1200 and a light-entry cavity 1202 communicating with it. The upper lens group 11 is fixed in the fixed receiving cavity 1200 of the inner black object 12, and external light can enter the upper lens group 11 through the light-entry cavity 1202. The inner black object 12 is further provided with an upper end surface 1203 and a lower end surface 1204. The opening of the fixed receiving cavity 1200 of the inner black object 12 is located on the lower end surface 1204 of the inner black object 12, and the light-entry cavity 1202 of the inner black object 12 is located on the upper end surface 1203 of the inner black object 12. That is, the fixed receiving cavity 1200 is located on the backlight side of the inner black object 12, and the light-entry cavity 1202 is located on the light-entry side of the inner black object 12.

[0079] In this preferred embodiment of the invention, the inner black element 12 is fixed to the upper lens element 11 by adhesive. Accordingly, the first lens component 10 further includes at least one upper lens element fixing adhesive 13, which fixes the upper lens element 11 to the fixing and receiving cavity 1200 of the inner black element 12.

[0080] At least one adhesive groove 101 is further provided between the upper lens group 11 and the inner black object 12, wherein the upper lens fixing adhesive 13 is located in the adhesive groove 101 of the inner black object 12. The adhesive groove 101 communicates with the fixing receiving cavity 1200 of the inner black object 12, wherein the adhesive material forming the upper lens fixing adhesive 13 is applied to the adhesive groove 101, and the adhesive material cures to form the upper lens fixing adhesive 13. Preferably, the adhesive groove 101 is formed in the inner black object 12, wherein the inner black object 12 further has an inner wall 1206 of the receiving cavity, wherein the adhesive groove 101 of the inner black object 12 extends inward and downward from the lower end face 1204 of the inner black object 12 to the inner wall 1206 of the receiving cavity of the inner black object 12.

[0081] like Figure 5 As shown, the inner black element 12 is inverted, and the upper lens 11 is placed in the fixing cavity 1200 of the inner black element 12 through the lower end opening of the inner black element 12, wherein the upper lens 11 and the inner black element 12 together define the adhesive groove 101. Adhesive material is applied to the adhesive groove 101 between the inner black element 12 and the upper lens 11, and after the adhesive material cures, it forms the upper lens fixing adhesive 13 in the adhesive groove 101.

[0082] Optionally, in other alternative embodiments of the present invention, the adhesive groove 101 is formed on the upper lens 11, wherein the upper lens 11 has an outer sidewall 110, and wherein the adhesive groove 101 extends upward and inward from the outer sidewall 110 of the upper lens 11 to an upper surface of the upper lens 11. Optionally, in other alternative embodiments of the present invention, the adhesive groove 101 may also be formed on the upper lens 11 and the inner black part 12. It is understood that the adhesive material forming the upper lens fixing adhesive 13 is formed within the adhesive groove 101 and fixedly connects the upper lens 11 to the inner black part 12.

[0083] It is worth mentioning that the opening of the adhesive groove 101 defined by the inner black element 12 and the upper lens group 11 faces the backlight side. When the inner black element 12 is inverted, the adhesive material is filled into the adhesive groove 101 from the backlight side of the first lens component 10. Therefore, during the application of adhesive and the bonding process, the adhesive material is located within the adhesive groove 101, which helps to prevent the adhesive material from overflowing. In addition, the adhesive material applied to the adhesive groove 101 can penetrate into the gap between the upper lens group 11 and the inner black element 12 under the action of gravity, thereby further fixing the upper lens group 11 and the inner black element 12 by the adhesive, improving the reliability of the lens bonding.

[0084] like Figure 5 As shown, the inner black object 12 includes an inner black object ring 121 and an inner black object edge cover 122 extending inward from the upper end of the inner black object ring. The inner black object ring 121 and the inner black object edge cover 122 together form the fixed accommodating cavity 1200 and the light entrance cavity 1202. The inner black object edge cover 122 of the inner black object 12 covers the upper end of the upper group lens 11, or the upper group lens 11 is fixed below the inner black object edge cover 122.

[0085] The inner black object 12 is located above the structural area 112 of the upper lens group 11 along the cover 122. The inner black object 12 presses against the upper lens group 11, thereby preventing the upper lens group 11 from moving up and down.

[0086] like Figure 7A and Figure 7B As shown, the inner black object 12 is fixed to the lens barrel 22 of the second lens component 20 by adhesive. The split lens further includes at least one lens adhesive unit 40, wherein the lens adhesive unit 40 is disposed between the first lens component 10 and the second lens component 20, and the first lens component 10 and the second lens component 20 are fixedly connected by the lens adhesive unit 40.

[0087] like Figure 7AAs shown, in this preferred embodiment of the present invention, the lens adhesive unit 40 is disposed between the inner black part 12 of the first lens component 10 and the lens barrel 22 of the second lens component 20, thereby bonding and fixing the inner black part 12 to the lens barrel 22 of the second lens component 20 by means of the lens adhesive unit 40. Preferably, in this preferred embodiment of the present invention, the adhesive material forming the lens adhesive unit 40 is applied to the lower end face 1204 of the inner black part 12; or the adhesive material forming the lens adhesive unit 40 is applied to the position of the lens barrel 22 of the second lens component 20 corresponding to the inner black part 12. It is understood that, in this preferred embodiment of the present invention, no adhesive material is provided between the upper lens group 11 of the first lens component 10 and the second lens component 20. The upper lens group 11 is fixed by the inner black object 12, and the upper lens group 11 is fixedly connected to the second lens component 20 by the inner black object 12, thereby maintaining the relative position of the upper lens group 11 and the second lens component 20.

[0088] like Figure 7B As shown, in this preferred embodiment of the present invention, the lens adhesive unit 40 further includes a first adhesive unit 41 and a second adhesive unit 42. The first adhesive unit 41 is disposed between the inner black element 12 of the first lens component 10 and the lens barrel 22 of the second lens component 20, i.e., the inner black element 12 is bonded and fixed to the lens barrel 22 of the second lens component 20 by the first adhesive unit 41. The second adhesive unit 42 is disposed between the upper lens group 11 of the first lens component 10 and the lens barrel 22 of the second lens component 20, thereby fixing the upper lens group 11 to the second lens component 20 by the second adhesive unit 42.

[0089] Preferably, the adhesive material forming the first adhesive unit 41 is applied to the lower end face 1204 of the inner black object 12, and the adhesive material forming the second adhesive unit 42 is applied to the lower end face of the upper lens group 11. It is understood that applying adhesive material in two locations increases the bonding strength of the split lens and prevents poor bonding caused by external impacts, temperature changes, etc.

[0090] It is worth mentioning that the adhesive material described in this application may be, but is not limited to, UV adhesive, thermosetting adhesive, or UV thermosetting adhesive.

[0091] Preferably, the outer black element 30 is an optical lens black element, and the material of the outer black element 30 is preferably PC material, which has the characteristics of low viscosity and good demolding performance, and the density of the material is 1.14-1.24 g / cm³. 2The shrinkage rate is 0.5-0.8%, the flexural strength is 60-80 MPa, the flexural modulus is 2200-2600 MPa, and the heat distortion temperature is 120-140℃. Preferably, the CTE value of the material of the outer black part 30 of the present invention is between 68 and 72.

[0092] The outer black object 30 is fixedly bonded to the outer side of the inner black object 12 and the second lens component 20 by adhesive material. The outer black object 30 further fixes the relative position of the upper lens group 11 of the first lens component 10 with respect to the second lens component 20, improves the reliability of lens bonding, and reduces the weakening of the bonding strength between the black object and the lens due to temperature shock.

[0093] The outer black element 30 includes an outer black element ring 31 and an extension arm 32 extending from the outer black element ring 31 toward the optical axis. The outer black element ring 31 is fixed to the second lens component 20. The extension arm 32 of the outer black element 30 covers the inner black element 12 and the structural area 112 of the upper lens group 11 to protect the upper lens group 11 and the inner black element 12. The outer black element ring 31 of the outer black element 30 has a ring-shaped structure, and the lower end of the outer black element ring 31 is fixedly connected to the lens barrel 22 of the second lens component 20 by an adhesive material.

[0094] The outer black object 30 further includes a blocking arm 33, wherein the blocking arm 33 extends obliquely downward from the extension arm 32 of the outer black object 30 toward the optical axis. The blocking arm 33 of the outer black object 30 is located inside the inner black object cover 122 of the inner black object 12, thereby blocking stray light from the outside and reducing the entry of external dust into the interior of the first lens component 10. The inner black object cover 122 of the inner black object 12 covers the outer side of the structural area 112 of the upper lens group 141, and one end of the blocking arm 33 covers the inner side of the structural area 112 of the upper lens group 11 and the top of the inner black object cover 122 of the inner black object. Therefore, in this preferred embodiment of the present invention, the blocking arm 33 of the outer black object 30 further maintains the position of the upper lens group 11 and blocks the entry of external dust and stray light.

[0095] The blocking arm 33 of the outer black object 30 has an inner bevel 331, an outer bevel 332, and a pressing surface 333 located between the inner bevel 331 and the outer bevel 332, wherein the pressing surface 333 of the blocking arm 33 is in close contact with the inner side of the structural region 112 of the upper lens group 11. The outer bevel 332 of the blocking arm 33 extends upward and obliquely outward from the pressing surface 333 to the extension arm 32 of the outer black object 30, forming a light-gathering space on the inner side of the outer bevel 332 of the outer black object 30, which facilitates the entry of ambient light into the upper lens group 11 through the light-gathering space.

[0096] like Figure 8A and Figure 8B As shown, the outer black element 30 is fixedly connected to the inner black element 12 and the lens barrel 22 of the second lens component 20 by adhesive, thereby further fixing the inner black element 12 and the upper lens group 11 above the second lens component 20 by the outer black element 30. Correspondingly, the split lens further includes at least one first adhesive 50 and at least one second adhesive 60, wherein the first adhesive 50 is located between the inner black element 12 and the outer black element 30, and the second adhesive 60 is located between the outer black element 30 and the lens barrel 22. The inner black element 12 and the outer black element 30 are fixedly bonded by the first adhesive 50, and the outer black element 30 is fixedly bonded to the lens barrel 22 by the second adhesive 60. In other words, in this preferred embodiment of the present invention, the inner black element 12 can be fixed by adhesive using the outer black element 30, and the upper lens group 11 can be further held to the lens barrel 22 by the outer black element 30.

[0097] Optionally, in another optional embodiment of the present invention, no adhesive material is provided between the outer black element 30 and the inner black element 12. The adhesive material is only provided between the outer black element 30 and the lens barrel 22. That is, the outer black element 30 and the inner black element 12 are not bonded with glue, which can achieve the function of isolating and bonding the upper lens group 11. Since the larger the size of the lens barrel 22, the greater the size change with temperature, the inner black element 12 is only glued to the lower lens barrel 22. There is no glue between the inner black element 12 and the outer black element 30; that is, in this embodiment, no retaining adhesive is provided between the inner black element 12 and the outer black element 30. The deformation of the colloid is much smaller than that of the outer black object 30. Therefore, under this scheme, the inner black object 12 can act as an isolation between the upper lens group 11 and the external large black object, which are affected by temperature changes and size changes. The inner black object 12 has optimized size and structure, and its own deformation is less. Therefore, this scheme can isolate the internal lens from the effects of external deformation.

[0098] The outer black object 30 is bonded to the support stage 222 of the lens barrel 22 by the second adhesive 60. Preferably, in this preferred embodiment of the present invention, the adhesive material forming the first adhesive 50 is applied to the upper end face of the inner black object 12, and the adhesive material forming the second adhesive 60 is applied to the support stage 222 of the lens barrel 22.

[0099] It is worth mentioning that in the above installation step S3, when the outer black object 30 is installed on the support stage 222 of the lens barrel 22, a glue storage space 303 is formed between the outer black object inner wall 302 of the outer black object 30 and the inner black object outer wall 1201 of the inner black object 12. The excess glue material forming the first adhesive 50 and the second adhesive 60 can be accommodated in the glue storage space 303, thereby helping to prevent glue material from overflowing.

[0100] It is worth mentioning that the inner black object 12 and the outer black object 30 are bonded and fixed together by the first adhesive 50 to strengthen the connection between the inner black object 12 and the outer black object 30. When the outer black object 30 is subjected to impact, part of the impact force is transmitted to the inner black object 12 through the first adhesive 50, thereby preventing the outer black object 30 from falling off.

[0101] In one embodiment of the present invention, the inner black object 12 and the outer black object 30 are connected as an integral structure, wherein the inner black object 12 and the outer black object 30 are made of the same material, and when subjected to temperature changes, they can offset each other as a whole to reduce shape deformation.

[0102] It is worth mentioning that the adhesive material forming the first adhesive colloid 50 is applied to the upper end surface 1203 of the inner black object 12, thereby preventing the overall lens from shifting due to the displacement of the lens center in the lateral direction caused by the adhesive material, and also preventing the first lens component 10 from falling off due to lateral force.

[0103] In this preferred embodiment of the invention, in the first lens component, the height of the inner black element 12 is at least 50 μm higher than the height of the structural region 112 of the upper lens group 11. Minimizing the height of the inner black element 12 increases the space between the inner black element 12 and the upper lens group within the outer black element, thereby reducing the lens size. As an example, in this preferred embodiment of the invention, the height of the inner black element 12 is 0.4-0.8 mm, and its outer diameter is 5-9 mm, while the height of the upper lens group 11 is 0.8-1.5 mm, and its outer diameter is 4-7 mm.

[0104] In addition, the height of the outer black object 30 is slightly higher than the overall height of the upper lens group 11, thereby preventing external foreign objects from interfering with the upper lens group 11 of the first lens component 10.

[0105] like Figures 3A to 3C as well as Figure 9 The assembly method of the split lens according to the present invention is shown, wherein the method includes the following steps:

[0106] S1. Assemble a first lens component 10, wherein at least one upper lens element 11 is fixed to an inner black object 12.

[0107] S2. Adjust the relative positional relationship between the first lens component 10 and the second lens component 20 within the allowable range of an assembly space 301 on the outer black object 30 to meet the active calibration requirements of the split lens, and fix the first lens component 10 and the second lens component 20; and

[0108] S3. Install the outer black object 30 onto the second lens component 20.

[0109] In the above-described assembly method for the split lens, the inner black object 12 has an inner black object outer sidewall 1201, wherein the inner black object outer sidewall 1201 is formed on the outer edge side surface of the inner black object 12. The outer black object 30 further has an outer black object inner sidewall 302, wherein the inner black object inner sidewall 302 is formed on the inner surface of the outer black object 30. The outer black object inner sidewall 302 of the outer black object 30 surrounds to form the assembly space 301. Assuming that the optical axis direction (Z-axis) of the split lens is longitudinal and the direction perpendicular to the optical axis is transverse (X-axis and Y-axis), then the transverse dimension of the outer black object inner sidewall 302 of the outer black object 30 is larger than the inner black object outer sidewall 1201 of the inner black object 12, that is, the transverse dimension of the assembly space 301 of the outer black object 30 is larger than the transverse dimension of the inner black object 12. The outer black object 30 is placed over the inner black object 12, wherein the assembly space 301 of the outer black object 30 allows the first lens component 10 to have a certain adjustment space along the X-axis and Y-axis directions, so that the outer black object 30 will not interfere with the inner black object 12 of the first lens component 10 during installation.

[0110] In step S1 of the above-described assembly method for a split lens, an adhesive material is applied to an adhesive groove 101 between an inner black element 12 and an upper lens element 11. The adhesive material bonds and fixes the inner black element 12 and the upper lens element 11 to obtain a first lens component 10. The inner black element 12 is an optical lens black element, and the ratio between the CTE value of the inner black element 12 and the CTE value of the upper lens element 11 is less than or equal to 300%.

[0111] In step S1 of the assembly method for the split lens described above, the inner black element 12 and the upper lens group 11 are inverted, and the upper lens group 11 is installed in a fixed receiving cavity 1200 of the inner black element 12. While keeping the upper lens group 11 and the inner black element 12 inverted, adhesive material is applied to the adhesive groove between the inner black element 12 and the upper lens group 11, so that the adhesive material is bonded and formed into an upper lens fixing adhesive 13 in the adhesive groove 101, wherein the adhesive material does not protrude from the adhesive groove 101. When the upper lens group 11 is made of plastic, the inner black element 12 is also made of plastic; or a mixture of plastic and mineral fiber; or glass fiber. When the upper lens group 11 is made of glass, the inner black element 12 can be made of metal or plastic with a high proportion of mineral fiber; or glass fiber, to meet the requirement that the CTE values ​​of the upper lens group 11 and the inner black element 12 are similar.

[0112] In step S2 of the assembly method of the split lens described above, at least one adhesive material is placed between the first lens component 10 and the second lens component 20. The adhesive material is bonded and formed into a lens adhesive unit 40, and the first lens component and the second lens component 20 are bonded by the lens adhesive unit 40.

[0113] In step S2 of the above-described assembly method for a split lens, one adhesive material is applied to the lower end face 1204 of the inner black element 12 of the first lens component 10, and a first adhesive unit 41 is formed by bonding the adhesive material, thereby bonding the inner black element 12 to the second lens component 20 via the first adhesive unit 41; another adhesive material is applied to the lower end face of the upper lens group 11 of the first lens component 10, and a second adhesive unit 42 is formed by bonding the adhesive material, thereby bonding the upper lens group 11 to the second lens component 20 via the second adhesive unit 42. Optionally, in step (2) of the above-described manufacturing method for a split lens, the adhesive material is applied to the lower end face 1204 of the inner black element 12 of the first lens component 10, and a first adhesive unit 41 is formed by bonding the adhesive material, thereby bonding the inner black element 12 to the second lens component 20 via the first adhesive unit 41.

[0114] In step S3 of the above-described assembly method for a split lens, adhesive is applied to an upper end face 1203 of the inner black object 12, wherein the adhesive applied to the upper end face 1203 is bonded to form a first adhesive 50, thereby fixing the inner black object 12 to the outer black object 30; and adhesive is applied to a support platform 222 of a lens barrel 22 of the second lens component 20, wherein the adhesive applied to the support platform 222 is bonded to form a second adhesive, thereby fixing the outer black object 30 to the second lens component 20.

[0115] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments, and any variations or modifications may be made to the implementation of the present invention without departing from the stated principles.

Claims

1. A split-type lens, characterized in that, include: A first lens component, the first lens component including at least one upper group of lens elements; A second lens assembly, wherein the first lens assembly is located above the second lens assembly, the second lens assembly includes at least one lower group lens element and a lens barrel for fixing the lower group lens element, wherein the lens barrel includes a support platform and a carrier platform, the support platform extending integrally upward from the inner side of the carrier platform, wherein the first lens assembly is fixed to the upper end face of the support platform of the lens barrel; and An outer black object is fixed to the support platform of the lens barrel. The outer black object has an assembly space. The first lens component is covered by the assembly space of the outer black object. The first lens component further includes an inner black object for fixing the at least one upper lens group. The inner black object fixes the upper lens group to the second lens component. The ratio of the CTE value of the inner black object to the CTE value of the upper lens group is 2 to 6.

2. The split lens according to claim 1, characterized in that, The inner black part of the first lens component is covered by the assembly space of the outer black part, wherein the lateral dimension of the outer wall of the inner black part is smaller than the lateral dimension of the inner wall of the outer black part, so as to allow the first lens component to have a certain adjustment space.

3. The split lens according to claim 2, wherein the assembly space of the outer black part allows the inner black part of the first lens component to have 5° of adjustment freedom within the assembly space.

4. The split lens according to claim 1, wherein the support platform has an upper surface of the support platform and a side surface of the support platform, wherein the upper surface of the support platform is the upper surface of the support platform, the side surface of the support platform is located on the side of the support platform, and the outer black object is tightly fitted with the side surface of the support platform.

5. The split lens according to claim 4, wherein the lateral dimension of the inner wall of the outer black object is 5-10 μm smaller than the lateral dimension of the side of the support platform of the lens barrel, so as to ensure that the outer black object can be mechanically assembled to the outside of the lens barrel.

6. The split lens according to claim 2, wherein the upper lens group of the first lens component includes a light-transmitting area and a structural area integrally extending outward from the light-transmitting area, wherein the inner black object of the first lens component is fixedly connected to the structural area of ​​the upper lens group.

7. The split lens according to claim 6, wherein the inner black object includes an inner black object ring and an inner black object edge cover extending inward from the upper end of the inner black object ring, the inner black object edge cover being located above the structural area of ​​the upper group of lenses.

8. The split lens according to claim 6, wherein the outer black object includes an outer black object ring and an extension arm extending from the outer black object ring in the direction of the optical axis, wherein the outer black object ring is fixed to the second lens component, and the extension arm of the outer black object covers the structural area of ​​the inner black object and the upper lens group to protect the upper lens group and the inner black object.

9. The split lens according to claim 8, wherein the outer black object further includes a blocking arm, wherein the blocking arm extends obliquely downward from the extension arm of the outer black object toward the optical axis, and the blocking arm of the outer black object is located inside the inner black object cover of the inner black object, thereby blocking external stray light and reducing the entry of external dust into the interior of the first lens component.

10. The split lens according to claim 8, further comprising at least one first adhesive and at least one second adhesive, wherein the first adhesive is located between the inner black object and the outer black object, and the second adhesive is located between the outer black object and the lens barrel, wherein the inner black object and the outer black object are fixedly bonded by the first adhesive, and the outer black object and the lens barrel are fixedly bonded by the second adhesive.

11. The split lens according to claim 2, wherein an adhesive material is provided between the outer black object and the lens barrel, and no adhesive material is provided between the outer black object and the inner black object.

Images