Multi-group lens, camera module and automobile

Abstract

The application provides a multi-group lens, comprising: a first lens comprising a first lens barrel and at least one first lens piece, the outer periphery of the first lens barrel being provided with a first welding protrusion; a second lens comprising a second lens barrel and at least one second lens piece, the outer periphery of the second lens barrel being provided with a second welding protrusion, the first welding protrusion and the second welding protrusion being fixed by welding, and the surface of the second lens barrel facing the first lens barrel being provided with a containing groove; and curing glue arranged in the containing groove and used for connecting the first lens barrel and the second lens barrel. The first lens barrel and the second lens barrel are preliminarily connected by the curing glue, and then fixed by the welding protrusions arranged on the outer periphery, so that the lens precision, the structural stability and the reliability can be improved, and the sealing property of the multi-group lens can be ensured because the curing glue is arranged at the connecting position of the first lens barrel and the second lens barrel.

Description

Technical Field

[0001] This invention relates to the technical field of automotive lenses, and in particular to a multi-group lens, a camera module, and an automobile. Background Technology

[0002] With increasing demands for image quality, the number of lens elements within a lens is gradually increasing. During lens assembly, assembly tolerances are unavoidable, resulting in significant cumulative tolerances. Current solutions involve multi-group lens assembly, where multiple lens elements are divided into multiple groups and assembled separately within the lens barrel, then the multiple lens barrels are assembled together to reduce cumulative tolerances. Multi-group lenses collectively form an optical system, and the optical transmission relationships between the multiple lens elements within the multiple lens barrels create a complete optical system.

[0003] Currently, multi-group lens assembly mainly relies on direct glue fixation or welding to secure the entire lens ring. Glue fixation can lead to unstable connections, while welding can cause lens misalignment during the welding process, resulting in product scrap. With the significant increase in automotive lenses, and given their harsh operating environments, ensuring good sealing, structural stability, and high precision in multi-group lenses is a pressing issue that needs to be addressed. Summary of the Invention

[0004] To address the aforementioned problems, the present invention aims to provide a multi-group lens, camera module, and automobile, which has the advantages of stable structure, good sealing, and high precision.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] This invention provides a multi-group lens, comprising:

[0007] The first lens includes a first lens barrel and at least one first lens element, and a first welding protrusion is provided on the outer periphery of the first lens barrel;

[0008] The second lens includes a second lens barrel and at least one second lens element. A second welding protrusion is provided on the outer periphery of the second lens barrel. The first welding protrusion and the second welding protrusion are fixed by welding. A receiving groove is provided on the surface of the second lens barrel facing the first lens barrel.

[0009] A curing adhesive is placed in the receiving groove to connect the first lens barrel and the second lens barrel.

[0010] In a further preferred embodiment, the first lens barrel is provided with an extension portion facing the second lens barrel, and the extension portion extends into the receiving groove and is bonded to the curing adhesive.

[0011] More preferably, the width of the receiving groove is greater than the thickness of the extension.

[0012] Further preferably, there are multiple first welding protrusions and multiple corresponding second welding protrusions. The multiple first welding protrusions are evenly spaced and distributed on the outer periphery of the first lens barrel, and the multiple second welding protrusions are evenly spaced and distributed on the outer periphery of the second lens barrel.

[0013] In a further preferred embodiment, the second lens barrel has a plurality of curing grooves on its surface facing the first lens barrel, and the curing grooves are in communication with the receiving groove.

[0014] Further preferably, the plurality of curing grooves are spaced apart from the second welding protrusion.

[0015] Further preferably, the second lens barrel has a baffle wall on its surface facing the first lens barrel, and the baffle wall is located on the side of the receiving groove near the center of the second lens barrel.

[0016] Further preferably, the second welding protrusion is provided with a limiting protrusion, which abuts against the side of the first welding protrusion.

[0017] The present invention also provides a camera module, including the aforementioned multi-group camera.

[0018] In addition, the present invention also provides an automobile including the above-described camera module.

[0019] Compared with the prior art, the present invention has at least one of the following beneficial effects:

[0020] 1. It can improve lens accuracy. The first and second lens barrels are initially connected by curing adhesive, which facilitates the initial alignment and pre-fixation of the first and second lenses. After the optical axis alignment of the first and second lenses is optimized, the subsequent welding of the first and second lens barrels will not affect the aligned multi-group lenses.

[0021] 2. To improve structural stability and reliability, the first and second lens barrels are fixed by welding protrusions on the outer periphery, ensuring the stability of the structural connection. Welding on the outer periphery will not damage the lenses inside the lens barrel due to high temperature.

[0022] 3. It has good sealing performance. The curing adhesive is placed at the connection between the first lens barrel and the second lens barrel, which can also ensure the sealing of the multi-group lens and prevent moisture and dust from entering the lens and affecting the imaging of the multi-group lens. Attached Figure Description

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0024] Figure 1This is an assembly diagram of the present invention;

[0025] Figure 2 This is an exploded view of the present invention;

[0026] Figure 3 This is a cross-sectional view of the present invention;

[0027] Figure 4 This is a top view of the second lens tube in this invention;

[0028] Illustration: 1-First lens, 101-First lens barrel, 102-First welding protrusion, 103-First lens element, 104-Extension, 2-Second lens, 201-Curing tank, 202-Receiving tank, 203-Second welding protrusion, 204-Second lens barrel, 205-Second lens element, 206-Barrier, 3-Curing adhesive.

[0029] The following detailed description, in conjunction with the accompanying drawings, will further illustrate the present invention. Detailed Implementation

[0030] To better understand the invention, various aspects of the invention will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of embodiments of the invention and are not intended to limit the scope of the invention in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0031] 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.

[0032] It should also be understood that the terms "comprising," "including," "having," "containing," and / or "comprising," when used in this specification, indicate the presence of the stated features, elements, and / or components, but do not exclude the presence or addition of one or more other features, elements, components, and / or combinations thereof. Furthermore, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire list of features, not individual elements in the list. Additionally, when describing embodiments of the invention, the word "may" is used to mean "one or more embodiments of the invention." And the term "exemplary" is intended to refer to an example or illustration.

[0033] Unless otherwise specified, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms (e.g., those defined in common dictionaries) shall be interpreted as having the meaning consistent with their meaning in the context of the relevant art and shall not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0034] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] A multi-group lens includes a first lens 1, a second lens 2, and a curing adhesive 3 for connecting the first lens 1 and the second lens 2. The first lens 1 includes a first lens barrel 101 and at least one first lens element 103. A first welding protrusion 102 is provided on the outer periphery of the first lens barrel 101. The second lens 2 includes a second lens barrel 204 and at least one second lens element 205. A second welding protrusion 203 is provided on the outer periphery of the second lens barrel 204. The first welding protrusion 102 and the second welding protrusion 203 are fixed together by welding, and a receiving groove 202 is formed on the surface of the second lens barrel 204 facing the first lens barrel 101. The curing adhesive 3 is disposed within the receiving groove 202 for connecting the first lens barrel 101 and the second lens barrel 204. This invention uses a curing adhesive 3 to initially connect the first lens barrel 101 and the second lens barrel 204, facilitating the initial alignment and pre-fixation of the first lens 1 and the second lens 2. This ensures optimal alignment of the optical axes of the first lens 1 and the second lens 2, preventing subsequent welding of the first lens barrel 101 and the second lens barrel 204 from affecting the aligned multi-group lens, thus improving lens accuracy. The first lens barrel 101 and the second lens barrel 204 are fixed by welding protrusions on their outer periphery, ensuring the stability of the structural connection. Welding on the outer periphery prevents damage to the internal lenses due to high temperatures, improving structural stability and reliability. Simultaneously, the fixing adhesive 3, located at the connection point of the first lens barrel 101 and the second lens barrel 204, also ensures the sealing of the multi-group lens, preventing moisture and dust from entering the lens interior and affecting image formation.

[0036] Specifically, the curing adhesive 3 is generally a UV thermosetting adhesive. The first welding protrusion 102 or the second welding protrusion 203 can be integrally molded on the lens barrel, or it can be molded on the lens barrel in two colors. If two-color molding is used, the rest of the lens barrel and the welding protrusion can be made of the same material or different materials.

[0037] To ensure a more stable connection between the first lens barrel 101 and the second lens barrel 204, the first lens barrel 101 is provided with an extension 104 facing the second lens barrel 204. The extension 104 extends into the receiving groove 202 and is bonded to the curing adhesive 3. By providing the extension 104, the contact area between the first lens barrel 101 and the curing adhesive 3 is increased, thereby ensuring the stability of the pre-fixed structure of the first lens barrel 101 and the second lens barrel 204. At the same time, by providing the extension 104 extending into the receiving groove 202, it can also limit the assembly of the first lens barrel 101 and the second lens barrel 204.

[0038] To facilitate alignment, the width of the receiving groove 202 is greater than the thickness of the extension 104. During alignment of the first lens 1 and the second lens 2, the extension 104 will adjust and move within the receiving groove 202 according to the alignment requirements. The aforementioned limitation ensures that the extension 104 has sufficient space within the receiving groove 202 to guarantee smooth alignment.

[0039] More specifically, there are multiple first welding protrusions 102 and multiple corresponding second welding protrusions 203. The multiple first welding protrusions 102 are evenly spaced on the outer periphery of the first lens barrel 101, and the multiple second welding protrusions 203 are evenly spaced on the outer periphery of the second lens barrel 204. The multiple welding protrusions reduce the amount of welding, improve welding efficiency, and lower production costs while ensuring a stable connection between the first lens barrel 101 and the second lens barrel 204. Simultaneously, the even distribution ensures a stable connection between the first lens barrel 101 and the second lens barrel 204, guaranteeing uniform stress on both.

[0040] To improve efficiency, the second lens barrel 204 has multiple curing grooves 201 on its surface facing the first lens barrel 101, and the curing grooves 201 are connected to the receiving groove 202. The setting of the curing grooves 201 facilitates the use of curing lamps to irradiate the curing adhesive 3, thereby improving the curing efficiency of the curing adhesive 3. The use of multiple curing grooves 201 instead of a single piece is also to reduce the amount of curing adhesive 3 used, reduce product costs, and enhance market competitiveness.

[0041] More specifically, multiple curing tanks 201 are spaced apart from the second welding protrusions 203. It can be understood that the curing tanks 201 are positioned between the second welding protrusions 203, and the curing tanks 201 and the second welding protrusions 203 are staggered. This spaced arrangement of the curing tanks 201 and the second welding protrusions 203 fully utilizes the surface structure of the second lens barrel 204 facing the first lens barrel 101, thereby improving the curing uniformity of the adhesive 3 and ensuring stable connection and sealing.

[0042] To further improve sealing performance, a baffle 206 is provided on the surface of the second lens barrel 204 facing the first lens barrel 101. The baffle 206 is located on the side of the receiving groove 202 near the center of the second lens barrel 204. The baffle 206 is designed to prevent the cured adhesive 3 from entering the lens interior during filling, thus avoiding contamination of the lens. Simultaneously, the presence of the baffle 206 allows operators or machines to quickly and confidently fill the cured adhesive 3, improving work efficiency.

[0043] More specifically, the second welding protrusion 203 is provided with a limiting protrusion, which abuts against the side of the first welding protrusion 102. The addition of the limiting protrusion facilitates the initial positioning and installation of the first lens barrel 101 and the second lens barrel 204, that is, ensures that the first welding protrusion 102 and the second welding protrusion 203 are aligned vertically.

[0044] During installation, curing adhesive 3 is injected into the receiving groove 202 of the second lens barrel 204, the extension 104 of the first lens barrel 101 is inserted into the receiving groove 202, and the first welding protrusion 102 and the second welding protrusion 203 are rotated and aligned; the first lens 1 and the second lens 2 are aligned, and the curing adhesive 3 is irradiated by a curing lamp. After the curing lamp irradiation is completed, the multi-group lens is placed in an oven for baking; the first welding protrusion 102 and the second welding protrusion 203 are welded and fixed by welding equipment, and after welding, the multi-group lens is placed in an oven for baking to complete the assembly.

[0045] The present invention also provides a camera module, including the aforementioned multi-group camera.

[0046] In addition, the present invention also provides an automobile including the above-described camera module.

[0047] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A multi-group lens, characterized in that, include: The first lens (1) includes a first lens barrel (101) and at least one first lens (103), and a first welding protrusion (102) is provided on the outer periphery of the first lens barrel (101). The second lens (2) includes a second lens barrel (204) and at least one second lens (205). A second welding protrusion (203) is provided on the outer periphery of the second lens barrel (204). The first welding protrusion (102) and the second welding protrusion (203) are fixed by welding. A receiving groove (202) is provided on the surface of the second lens barrel (204) facing the first lens barrel (101). A baffle (206) is provided on the surface of the second lens barrel (204) facing the first lens barrel (101). The baffle (206) is located on the side of the receiving groove (202) near the center of the second lens barrel (204). Curing adhesive (3) is disposed in the receiving groove (202) for connecting the first lens barrel (101) and the second lens barrel (204). The first lens barrel (101) is provided with an extension (104) facing the second lens barrel (204), and the extension (104) extends into the receiving groove (202) and is bonded to the curing adhesive (3); There are multiple first welding protrusions (102) and multiple corresponding second welding protrusions (203). The multiple first welding protrusions (102) are evenly spaced and distributed on the outer periphery of the first lens barrel (101), and the multiple second welding protrusions (203) are evenly spaced and distributed on the outer periphery of the second lens barrel (204). The second lens barrel (204) has a plurality of curing grooves (201) on its surface facing the first lens barrel (101). The curing grooves (201) are connected to the receiving groove (202), and the plurality of curing grooves (201) are spaced apart from the second welding protrusion (203).

2. A multi-group lens according to claim 1, characterized in that, The width of the receiving groove (202) is greater than the thickness of the extension (104).

3. A multi-group lens according to claim 1, characterized in that, The second welding protrusion (203) is provided with a limiting protrusion, which abuts against the side of the first welding protrusion (102).

4. A camera module, characterized in that, Including the multi-group lens as described in any one of claims 1-3.

5. A car, characterized in that, Includes the camera module as described in claim 4.

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