Lens module
By setting protrusions and adhesive grooves between the lens and the lens barrel, the airtightness problem during lens module assembly is solved, achieving full bonding and stable connection between the lens and the lens barrel, thus ensuring the airtightness and structural stability of the lens module.
Patent Information
- Application Number
- CN202520333024.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-02-27
AI Technical Summary
During the assembly of the lens module, the limited contact area between the glass lens and the lens barrel leads to insufficient bonding, which can easily form air bubbles and voids, affecting airtightness.
A first protrusion and a lens adhesive groove, as well as a lens adhesive groove and a second protrusion, are provided between the lens and the lens barrel to increase the contact area and limit the distribution of adhesive, ensuring full bonding.
It enhances the bonding strength and stability between the lens and the lens barrel, reduces the possibility of air bubbles and voids, and ensures the airtightness and structural stability of the lens module.
Smart Images
Figure CN223926684U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of lens, concretely is a lens module. BACKGROUND
[0002] When the lens module is installed, the lenses are stacked upwards along the reference surface of the lens barrel. The outermost lens in some lens modules is a glass lens G1, and the resin lens P2 is adjacent to the glass lens G1. Before the glass lens G1 is assembled, it needs to be glued. After the glass lens G1 is pressed in, the lens barrel and the glue need to be fully bonded, and the resin lens P2 and the glue also need to be fully bonded, thereby meeting the anti-fogging requirements of the lens module.
[0003] Due to the limitation of the contact surface between the edge of the glass lens G1 and the stepped surface of the lens barrel, the contact area between the lens barrel and the glue is also limited. The flowability during the process of pressing the glass lens G1 into the lens barrel cannot be guaranteed, and the contact surface between the resin lens P2 and the glue is not sufficient, which is easy to form bubbles and cavities, affecting the bonding area and causing the air tightness of the lens module to be unable to be guaranteed. SUMMARY
[0004] In view of the above problems, the utility model provides a lens module which can solve the problem that the air tightness of the lens module is easily affected during assembly.
[0005] The utility model provides a lens module, the lens module includes the lens barrel, first lens and second lens. One end of the lens barrel is provided with containing groove, and the containing groove includes first containing groove and second containing groove which are sequentially arranged along the axial direction. The first lens is matched and arranged in the first containing groove, the second lens is matched and arranged in the second containing groove, the first lens is located at the front side of the second lens and abuts against the second lens, and the lens module further includes lens glue groove and first protruding part, the first protruding part is inserted into the lens glue groove, one of the lens glue groove and the first protruding part is arranged at one end of the second lens close to the first containing groove, and the other of the lens glue groove and the first protruding part is arranged at one end of the first lens close to the second lens along the axial direction.
[0006] Through the above mode, the first protruding part and the lens glue groove are arranged, the contact area between the first lens and the second lens is increased, the first lens and the second lens are fully bonded, the flowability between the first lens and the second lens is enhanced, and the air tightness of the lens module during assembly is facilitated to be guaranteed. At the same time, the lens glue groove can limit the position and distribution of the glue, and guarantee the firmness and stability of the connection between the first lens and the second lens.
[0007] Optionally, the radial dimension of the first accommodating groove is greater than that of the second accommodating groove, the bottom of the first accommodating groove has a stepped surface located at the radial outer periphery of the opening of the second accommodating groove, the lens barrel further comprises a lens barrel glue dispensing groove and a second protruding portion. The lens barrel glue dispensing groove corresponds to the second protruding portion, one of the lens barrel glue dispensing groove and the second protruding portion is arranged on the stepped surface, and the other of the lens barrel glue dispensing groove and the second protruding portion is arranged at one end of the first lens close to the second lens in the axial direction.
[0008] By the above manner, the second protruding portion and the lens barrel glue dispensing groove are arranged, the contact area between the first lens and the lens barrel is increased, and sufficient bonding between the first lens and the lens barrel is ensured. The second protruding portion cooperates with the first protruding portion, further strengthens the contact between the first lens and the lens barrel and the second lens, and enhances the flowability of the first lens when being pressed into the lens barrel. Meanwhile, the lens barrel glue dispensing groove can limit the position and distribution of the glue on the lens barrel, and further ensure the firmness and stability of the connection between the first lens and the lens barrel.
[0009] Optionally, the first protruding portion and the lens glue dispensing groove are both circular annular. In this way, the circular annular groove enables the glue to be uniformly distributed around the top surface of the second lens, improves the adhesion and sealing between the first lens and the second lens, and is conducive to ensuring the stability of the lens barrel structure. Moreover, the circular annular groove reduces the installation difficulty of the first lens.
[0010] Optionally, the second protruding portion and the lens barrel glue dispensing groove are both circular annular, and the lens barrel glue dispensing groove and the lens glue dispensing groove are two coaxially arranged circular annular grooves. In this way, the lens barrel glue dispensing groove enables the glue to be uniformly distributed around the bottom surface of the first accommodating groove, and the two coaxially arranged circular annular grooves can enable the first lens to be in sufficient contact with the second lens and the lens barrel, and further enhance the air tightness of the lens module.
[0011] Optionally, the lens barrel further comprises an overflow groove between the lens glue dispensing groove and the lens barrel glue dispensing groove. By the above manner, the overflow groove can accommodate the overflow glue in the lens glue dispensing groove and the lens barrel glue dispensing groove, and prevent interference fit. The overflow groove can increase the air flowability between the first lens and the lens barrel, and reduce the possibility of generating bubbles or cavities.
[0012] Optionally, the depth of the lens glue dispensing groove in the axial direction of the lens barrel is less than the depth of the overflow groove in the axial direction of the lens barrel, and the depth of the lens barrel glue dispensing groove in the axial direction of the lens barrel is less than the depth of the overflow groove in the axial direction of the lens barrel. By the above manner, the overflow groove can prevent the overflow of excess glue between the first lens and the lens barrel, and further ensure the air tightness of the lens module.
[0013] Optionally, the overflow groove is circular annular. In this way, the circular annular overflow groove can surround the second lens, and cooperate with the lens glue dispensing groove and the lens barrel glue dispensing groove to improve the collection effect of the overflow glue.
[0014] Optionally, the first lens is integrally formed with the first protruding part and the second protruding part. In this way, multiple components are integrated into one component, greatly shortening the production cycle and improving production efficiency and reducing production costs. At the same time, the integrally formed process can improve the structural strength of the first lens, thereby ensuring the strength of the lens module structure.
[0015] Optionally, the lens module includes a lens group, the first lens is the outermost lens of the lens group, and the second lens is the lens of the lens group that abuts against the first lens. In this way, the lens group is a plurality of lenses stacked according to the reference surface, and specific optical performance and functions can be achieved. The first lens can protect the lens, reduce reflection and scattering of light, reduce the influence of glare, and thus provide a clear image. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 FIG. 1 is a structural schematic view of a lens module in an embodiment of the present application.
[0017] Figure 2 FIG. 2 is another structural schematic view of the lens module in the embodiment of the present application.
[0018] Figure 3 FIG. 3 is a top view of the lens module in the embodiment of the present application when the first lens is not installed. Figure 2 FIG. 4 is an enlarged view of part A in FIG. 3.
[0019] Figure 4 FIG. 5 is a structural schematic view of the lens module in the embodiment of the present application when the first lens is not installed.
[0020] Figure 5 FIG. 6 is a structural schematic view of the lens module in the embodiment of the present application when the first lens is not installed.
[0021] Reference signs:
[0022] 100, lens module; 10, lens barrel; 11, first accommodating groove; 12, second accommodating groove; 20, lens group; 21, first lens; 22, second lens; 30, first protruding part; 31, lens dispensing groove; 311, first groove; 312, second groove; 40, second protruding part; 41, lens barrel dispensing groove; 50, overflow groove. DETAILED DESCRIPTION
[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0024] The utility model provides a lens module, can guarantee the air tightness after lens module assembly. The utility model discloses the component part of the lens module in the embodiment of the utility model is specifically explained below in conjunction with the drawing.
[0025] <lens barrel 10, lens group 20>
[0026] Reference Figure 1 And Figure 2 The lens module 100, including lens barrel 10 and lens group 20. Lens group 20 includes first lens 21 and second lens 22. First lens 21 is the outermost lens of lens group 20, and second lens 22 is the lens of lens group 20 abutting with first lens 21. The front end of lens barrel 10 is provided with first accommodating groove 11 and second accommodating groove 12 along the axial direction in turn, and first lens 21 is matched and arranged in first accommodating groove 11, and second lens 22 is matched and arranged in second accommodating groove 12. First lens 21 is located at the front side of second lens 22, and the bottom surface of first lens 21 abuts with the top surface of second lens 22. That is, first lens 21 is closer to the front end of lens barrel 10 relative to second lens 22.
[0027] It should be noted that the first lens 21 and the second lens 22 in the embodiment of the utility model are both cylindrical, and the corresponding first accommodating groove 11 and the second accommodating groove 12 are also cylindrical.
[0028] Through the above mode, the lens barrel 10 can accommodate and protect the lens group 20. The lens group is a plurality of lenses stacked according to the reference surface of the lens barrel 10, which can realize specific optical performance and function. The first lens 21 at the outermost side of the lens group can protect the lens, prevent impurities such as dust and fingerprints from directly contacting the lens, reduce dirt, and avoid damage to the lens. The surface of the first lens 21 is usually coated with a layer of film, which can reduce the reflection and scattering of light and reduce the influence of glare, thereby providing a clear image. The film on the surface of the first lens 21 can also reduce wear during daily use and prolong the service life.
[0029] <first protruding part 30, lens glue dispensing groove 31>
[0030] Reference Figure 1 And Figure 2 The second lens 22 is provided with a lens glue dispensing groove 31 at one end close to the first accommodating groove 11. The first lens 21 is provided with a first protruding part 30 at one end close to the second lens 22 along the axial direction. The first protruding part 30 and the lens glue dispensing groove 31 are oppositely arranged, and the first protruding part 30 can be inserted into the lens glue dispensing groove 31.
[0031] Reference Figure 3The lens dispensing groove 31 may include a first groove 311 and a second groove 312 arranged sequentially. The top surface of the first groove 311 contacts the first receiving groove 11, and the bottom surface of the first groove 311 contacts the top surface of the second groove 312. The radial dimension of the first groove 311 is larger than that of the second groove 312, which facilitates limiting the range of the adhesive and increasing the volume of the adhesive. The depth of the second groove 312 is greater than that of the first groove 311, which facilitates the first protrusion 30 to pass through the adhesive in the first groove 311 and insert into the second groove 312, preventing some of the adhesive in the first groove 311 from failing to penetrate into the second groove 312 due to surface tension.
[0032] By providing a first protrusion 30 and a lens adhesive groove 31 on adjacent first lens 21 and second lens 22 respectively, the contact area between the first lens 21 and second lens 22 is increased, ensuring thorough bonding between them. Furthermore, the first protrusion 30 and the lens adhesive groove 31 enhance airflow between the first lens 21 and second lens 22, thereby reducing the possibility of air bubbles and voids forming between the lenses, which helps ensure the airtightness of the lens module 100 assembly. Simultaneously, the lens adhesive groove 31 restricts the position and distribution of adhesive on the second lens 22, ensuring the firmness and stability of the connection between the first lens 21 and second lens 22.
[0033] Combination Figure 2 and refer to Figure 4 Both the first protrusion 30 and the lens adhesive groove 31 are annular. This design matches the shape of the annular groove to the edge of the first lens 21, ensuring that the adhesive is evenly distributed around the top surface of the second lens 22. This improves the adhesion and sealing between the first and second lenses 21, further guaranteeing the stability of the lens barrel 10 structure. Furthermore, the annular groove avoids restricting the installation direction, reducing the difficulty of installing the first lens 21.
[0034] like Figure 3 As shown, it should be noted that the cross-section of the first protrusion 30 and the lens adhesive groove 31 along the vertical direction is rectangular. In some other embodiments of this utility model, the cross-section of the first protrusion 30 and the lens adhesive groove 31 in the vertical direction may also be triangular or semi-circular. This utility model does not limit the shape of the first protrusion 30 and the lens adhesive groove 31.
[0035] <Second protrusion 40, lens barrel adhesive groove 41>
[0036] Combination Figure 2 and refer to Figure 5The radial dimension of the first receiving groove 11 is larger than that of the second receiving groove 12. The bottom of the first receiving groove 11 has an annular stepped surface. The inner ring of the stepped surface abuts against the second receiving groove 12, and the diameter of the outer ring of the stepped surface is larger than the diameter of the second receiving groove 12. The stepped surface is parallel to the top surface of the second receiving groove 12. A lens barrel dispensing groove 41 is provided on the stepped surface. A second protrusion 40 is provided at one end of the first lens 21 along the axial direction near the second lens 22. The second protrusion 40 is disposed opposite to the lens barrel dispensing groove 41, and the second protrusion 40 can be inserted into the lens barrel dispensing groove 41.
[0037] The lens barrel dispensing groove 41 may include a third groove and a fourth groove (not shown) arranged sequentially. The top surface of the third groove contacts the stepped surface, and the bottom surface of the third groove contacts the top surface of the fourth groove. The radial dimension of the third groove is larger than that of the fourth groove, which facilitates limiting the range of adhesive and increasing the volume of adhesive. The depth of the fourth groove is greater than that of the third groove, which facilitates the second protrusion 40 to pass through the adhesive in the third groove and insert into the fourth groove, preventing some adhesive in the third groove from failing to penetrate into the fourth groove due to surface tension.
[0038] By employing the above method, a second protrusion 40 and a lens barrel adhesive groove 41 are respectively provided on the first receiving groove 11 of the first lens 21 and the lens barrel 10, increasing the contact area between the first lens 21 and the lens barrel 10 and ensuring sufficient adhesion between them. The second protrusion 40, together with the first protrusion 30, forms a double structure, enhancing airflow when the first lens 21 is pressed into the lens barrel 10. Simultaneously, the lens barrel adhesive groove 41 can restrict the position and distribution of adhesive on the lens barrel 10, further ensuring the firmness and stability of the connection between the first lens 21 and the lens barrel 10.
[0039] Combination Figure 1 and refer to Figure 4 Both the second protrusion 40 and the lens barrel adhesive groove 41 are annular. The lens barrel adhesive groove 41 and the lens adhesive groove 31 are two coaxially arranged annular grooves. With this arrangement, the lens barrel adhesive groove 41 ensures that the adhesive is evenly distributed around the bottom surface of the first receiving groove 11, and the two coaxially arranged annular grooves ensure that the first lens 21, the second lens 22, and the lens barrel 10 are in full contact. The double-ring structure further enhances the airtightness and structural stability of the lens module 100.
[0040] refer to Figure 1 and Figure 2 The first lens 21, the first protrusion 30, and the second protrusion 40 are all integrally formed. This arrangement integrates multiple components into one, significantly shortening the production cycle, improving production efficiency, and reducing production costs. Simultaneously, the integral forming process enhances the structural strength of the first lens 21, thereby ensuring the structural strength of the lens module 100.
[0041] It should be noted that the second protrusion 40 and the lens barrel dispensing groove 41 have rectangular cross-sections along the vertical direction. In some other embodiments of this utility model, the second protrusion 40 and the lens barrel dispensing groove 41 may also have triangular or semi-circular cross-sections in the vertical direction. This utility model does not limit the shape of the second protrusion 40 and the lens barrel dispensing groove 41.
[0042] <Overflow tank 50>
[0043] Combination Figure 2 and refer to Figure 4 An overflow groove 50 is provided on the stepped surface. The overflow groove 50 is located between the lens dispensing groove 31 and the lens barrel dispensing groove 41. In this way, the overflow groove 50 can accommodate the glue overflowing from the lens dispensing groove 31 and the lens barrel dispensing groove 41, preventing interference fit. The overflow groove 50 can also increase the air flow between the first lens 21 and the lens barrel 10, reducing the possibility of air bubbles or voids.
[0044] like Figure 4 As shown, the glue overflow groove 50 is annular. The inner ring of the glue overflow groove 50 may or may not abut against the second lens 22, meaning the diameter of the inner ring of the glue overflow groove 50 is larger than the diameter of the second lens 22. With this design, the annular glue overflow groove 50 can surround the second lens 22 and, in conjunction with the lens glue dispensing groove 31 and the lens barrel glue dispensing groove 41, improves the collection effect of overflowing glue.
[0045] Optionally, the depth of the lens dispensing groove 31 in the axial direction of the lens barrel 10 is less than the depth of the overflow groove 50 in the axial direction of the lens barrel 10, and the depth of the lens barrel dispensing groove 41 in the axial direction of the lens barrel 10 is less than the depth of the overflow groove 50 in the axial direction of the lens barrel 10. In this way, the overflow groove 50 ensures that the first protrusion 30 and the second protrusion 40 are in full contact with the lens dispensing groove 31 and the lens barrel dispensing groove 41 respectively, and prevents excess glue from overflowing between the first lens 21 and the lens barrel 10, further ensuring the airtightness of the lens module 100.
[0046] The assembly process of the lens module 100 will be described below in conjunction with the working principle of this utility model.
[0047] Lenses from lens group 20 are sequentially placed into lens barrel 10 until the second lens 22 is placed into the second receiving groove 12. Adhesive is injected into lens dispensing groove 31 and lens barrel dispensing groove 41. The first lens 21 is pressed into the first receiving groove 11, causing the gas in the first receiving groove 11 to be expelled. The first protrusion 30 on the first lens 21 is fully bonded to the lens dispensing groove 31, and the second protrusion 40 is fully bonded to the lens barrel dispensing groove 41. Excess adhesive overflows into the overflow groove 50. After the adhesive cures, the lens module 100 forms an airtight seal.
[0048] Furthermore, in some embodiments of this invention, the first protrusion 30 may be disposed on the second lens 22, and the corresponding lens adhesive groove 31 may be disposed on the first lens 21. This invention does not limit the positions of the first protrusion 30 and the lens adhesive groove 31. The second protrusion 40 may be disposed on the stepped surface of the first receiving groove 11, and the corresponding lens barrel adhesive groove 41 may be disposed on the first lens 21. This invention also does not limit the positions of the second protrusion 40 and the lens barrel adhesive groove 41.
[0049] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A lens module, the lens module comprising a lens barrel, a first lens element, and a second lens element, wherein one end of the lens barrel is provided with a receiving groove, the receiving groove comprising a first receiving groove and a second receiving groove arranged sequentially along an axial direction, the first lens element being matched and disposed within the first receiving groove, the second lens element being matched and disposed within the second receiving groove, the first lens element being located in front of the second lens element and abutting against the second lens element, characterized in that... The lens module further includes a lens dispensing groove and a first protrusion. The first protrusion is inserted into the lens dispensing groove. One of the lens dispensing groove and the first protrusion is disposed at the end of the second lens near the first receiving groove. The other of the lens dispensing groove and the first protrusion is disposed at the end of the first lens near the second lens along the axial direction.
2. The lens module according to claim 1, characterized in that, The first receiving groove has a larger radial dimension than the second receiving groove. The bottom of the first receiving groove has a stepped surface located on the radial outer periphery of the groove opening of the second receiving groove. The lens module also includes a lens barrel dispensing groove and a second protrusion. The lens barrel dispensing groove is inserted into the second protrusion. One of the lens barrel dispensing groove and the second protrusion is disposed on the stepped surface. The other of the lens barrel dispensing groove and the second protrusion is disposed at one end of the first lens along the axial direction close to the second lens.
3. The lens module according to claim 2, characterized in that, Both the first protrusion and the lens dispensing groove are annular.
4. The lens module according to claim 3, characterized in that, Both the second protrusion and the lens barrel dispensing groove are annular, and the lens barrel dispensing groove and the lens dispensing groove are two coaxial annular grooves.
5. The lens module according to claim 2, characterized in that, It also includes an overflow groove, which is located between the lens dispensing groove and the lens barrel dispensing groove.
6. The lens module according to claim 5, characterized in that, The depth of the lens dispensing groove in the axial direction of the lens barrel is less than the depth of the overflow groove in the axial direction of the lens barrel.
7. The lens module according to claim 5, characterized in that, The overflow groove is circular.
8. The lens module according to claim 2, characterized in that, The first lens is integrally formed with both the first protrusion and the second protrusion.
9. The lens module according to claim 1, characterized in that, The lens module includes a lens group, the first lens being the outermost lens of the lens group, and the second lens being the lens in the lens group that abuts against the first lens.