Multi-group lens, camera module and automobile

Abstract

The invention provides a multi-group lens, and the lens comprises a first lens which comprises a first lens cone and at least one first lens, and the peripheral side of the first lens cone is provided with a first welding projection; the second lens comprises a second lens cone and at least one second lens, the peripheral side of the second lens cone is provided with a second welding protrusion, the first welding protrusion and the second welding protrusion are fixed through welding, and the surface, facing the first lens cone, of the second lens cone is provided with a containing groove; and the curing glue is arranged in the accommodating groove and is used for connecting the first lens cone and the second lens cone. The first lens barrel and the second lens barrel are preliminarily connected through the curing glue, and then are welded and fixed through the welding protrusions arranged on the peripheral side, so that the precision of the lens can be improved, the structural stability and reliability can be improved, and the curing glue is arranged at the joint of the first lens barrel and the second lens barrel, so that the service life of the lens is prolonged. And the sealing performance of the multi-group lens can be ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle-mounted lenses, and in particular to a multi-group lens, a camera module and a vehicle. Background Art

[0002] With the high requirements for image quality, the number of lenses in the lens is gradually increasing. In the process of lens assembly, it is inevitable that there will be assembly tolerances, that is, the cumulative tolerance is large. The existing solution is to assemble through multi-group lenses, that is, to divide multiple lenses into multiple groups and assemble them in the lens barrel separately, and then assemble multiple lens barrels to reduce the cumulative tolerance. Multi-group lenses form an optical system through multiple lenses together, and the optical transmission relationship between multiple lenses in multiple lens barrels forms a complete optical system.

[0003] At present, the assembly of multi-group lenses is mainly done by directly fixing them with glue or welding the lens in a whole circle. Gluing will cause unstable connection, while welding will cause lens welding deviation during the welding process, which will lead to product scrapping. With the massive growth of automotive lenses, and the harsh operating environment of automotive lenses, how to ensure the good sealing, stable structure and high precision of multi-group lenses is an urgent problem to be solved. Summary of the invention

[0004] In view of the above problems, the object of the present invention is to provide a multi-group lens, a camera module and a car, which have the advantages of stable structure, good sealing and high precision.

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

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

[0007] A first lens, comprising a first lens barrel and at least one first lens, wherein a first welding protrusion is provided on an outer peripheral side of the first lens barrel;

[0008] A second lens, comprising a second lens barrel and at least one second lens, wherein a second welding protrusion is arranged on the outer peripheral side of the second lens barrel, the first welding protrusion and the second welding protrusion are fixed by welding, and a receiving groove is arranged on the surface of the second lens barrel facing the first lens barrel;

[0009] The curing glue is arranged in the receiving groove and is used to connect the first lens barrel and the second lens barrel.

[0010] Further preferably, the first lens barrel is provided with an extension portion toward the second lens barrel, and the extension portion extends into the accommodating groove to be bonded with the curing adhesive.

[0011] Further preferably, the width of the accommodating groove is greater than the thickness of the extending portion.

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

[0013] Further preferably, a plurality of curing grooves are formed on a surface of the second lens barrel facing the first lens barrel, and the curing grooves are in communication with the accommodating grooves.

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

[0015] Further preferably, a retaining wall is provided on a surface of the second lens barrel facing the first lens barrel, and the retaining wall is located on a side of the accommodating groove close to the center of the second lens barrel.

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

[0017] The present invention also provides a camera module, comprising the above-mentioned multiple group cameras.

[0018] In addition, the present invention also provides a car, comprising the above-mentioned 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 the accuracy of the lens. The first lens barrel and the second lens barrel are preliminarily connected by curing glue, which is convenient for the first lens and the second lens to complete the preliminary centering and pre-fixation, and ensure that the optical axis alignment of the first lens and the second lens is optimized. The subsequent welding of the first lens barrel and the second lens barrel will not affect the centering of the multi-group lens.

[0021] 2. Improve structural stability and reliability. The first lens barrel and the second lens barrel are fixed by welding through welding protrusions arranged on the outer peripheral side to ensure the stability of the structural connection. The lenses inside the lens barrel will not be damaged by high temperature through welding on the outer peripheral side.

[0022] 3. It has good sealing performance. The curing glue is set 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 water vapor and dust from entering the lens to affect the imaging of the multi-group lens. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0025] Figure 2 An exploded view of the present invention;

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

[0027] Figure 4 is a top view of the second lens barrel in the present invention;

[0028] Illustration: 1-first lens, 101-first lens barrel, 102-first welding protrusion, 103-first lens, 104-extension portion, 2-second lens, 201-curing groove, 202-accommodating groove, 203-second welding protrusion, 204-second lens barrel, 205-second lens, 206-retaining wall, 3-curing glue.

[0029] The following specific implementation manner will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0030] In order to better understand the present invention, a more detailed description will be made of various aspects of the present invention with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of embodiments of the present invention, and are not intended to limit the scope of the present 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 the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0032] It should also be understood that the terms "comprises", "including", "having", "includes" 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. In addition, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire listed features rather than modifying the individual elements in the list. In addition, when describing embodiments of the present invention, "may" is used to mean "one or more embodiments of the present invention". And, the term "exemplary" is intended to refer to an example or illustration.

[0033] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those skilled in the art to which the present invention belongs. It should also be understood that terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined in this article.

[0034] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] A multi-group lens comprises a first lens 1, a second lens 2 and a curing adhesive 3 connecting the first lens 1 and the second lens 2. The first lens 1 comprises a first lens barrel 101 and at least one first lens 103, and a first welding protrusion 102 is arranged on the outer peripheral side of the first lens barrel 101. The second lens 2 comprises a second lens barrel 204 and at least one second lens 205, and a second welding protrusion 203 is arranged on the outer peripheral side of the second lens barrel 204. The first welding protrusion 102 and the second welding protrusion 203 are fixed by welding, and a receiving groove 202 is opened on the surface of the second lens barrel 204 facing the first lens barrel 101. The curing adhesive 3 is arranged in the receiving groove 202, and is used to connect the first lens barrel 101 and the second lens barrel 204. The present invention preliminarily connects the first lens barrel 101 and the second lens barrel 204 through the curing glue 3, so that the first lens 1 and the second lens 2 can complete the preliminary core adjustment and pre-fixation, and after the optical axis alignment of the first lens 1 and the second lens 2 is optimized, the subsequent welding of the first lens barrel 101 and the second lens barrel 204 will not affect the core-adjusted multi-group lens, thereby improving the lens accuracy. The first lens barrel 101 and the second lens barrel 204 are welded and fixed by welding protrusions arranged on the peripheral side, ensuring the stability of the structural connection, and the lens inside the lens barrel will not be damaged by high temperature through the peripheral side welding, thereby improving the stability and reliability of the structure. At the same time, the fixing glue 3 is arranged at the connection between the first lens barrel 101 and the second lens barrel 204, which can also ensure the sealing of the multi-group lens, and prevent water vapor and dust from entering the interior of the lens, affecting the imaging of the multi-group lens.

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

[0037] In order to make the connection between the first lens barrel 101 and the second lens barrel 204 more stable, the first lens barrel 101 is provided with an extension portion 104 toward the second lens barrel 204, and the extension portion 104 extends into the receiving groove 202 and is bonded with the curing glue 3. By providing the extension portion 104, the contact area between the first lens barrel 101 and the curing glue 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 portion 104 extending into the receiving groove 202, it can also play a limiting role in the assembly of the first lens barrel 101 and the second lens barrel 204.

[0038] In order to facilitate alignment, the width of the receiving groove 202 is greater than the thickness of the extension portion 104. When the first lens 1 and the second lens 2 are aligned, the extension portion 104 will adjust and move in the receiving groove 202 according to the alignment requirements. The above limitation ensures that there is enough space for the extension portion 104 in the receiving groove 202 to ensure smooth alignment.

[0039] More specifically, there are multiple first welding protrusions 102, and correspondingly, there are multiple second welding protrusions 203. Multiple first welding protrusions 102 are evenly spaced and distributed on the outer periphery of the first lens barrel 101, and multiple second welding protrusions 203 are evenly spaced and distributed on the outer periphery of the second lens barrel 204. Multiple welding protrusions are provided to reduce the welding amount, improve welding efficiency, and reduce production costs on the basis of ensuring the stable connection between the first lens barrel 101 and the second lens barrel 204; at the same time, the uniform distribution is to ensure the stable connection between the first lens barrel 101 and the second lens barrel 204, and ensure that both are evenly stressed.

[0040] In order to improve efficiency, a plurality of curing grooves 201 are provided on the surface of the second lens barrel 204 facing the first lens barrel 101, and the curing grooves 201 are connected to the receiving grooves 202. The provision of the curing grooves 201 facilitates the use of a curing lamp to irradiate the curing glue 3, thereby improving the curing efficiency of the curing glue 3. The use of a plurality of curing grooves 201 instead of one integral one is also to reduce the use amount of the curing glue 3, reduce product costs, and improve market competitiveness.

[0041] More specifically, a plurality of curing grooves 201 are arranged at intervals from the second welding protrusions 203. It is understandable that the curing grooves 201 are arranged between the second welding protrusions 203, and the curing grooves 201 and the second welding protrusions 203 are arranged at intervals. The curing grooves 201 and the second welding protrusions 203 are arranged at intervals, making full use of the surface structure of the second lens barrel 204 facing the first lens barrel 101, thereby improving the curing uniformity of the curing glue 3 and ensuring stable connection and sealing.

[0042] In order to further improve the sealing performance, a retaining wall 206 is provided on the surface of the second lens barrel 204 facing the first lens barrel 101, and the retaining wall 206 is located on the side of the receiving groove 202 close to the center of the second lens barrel 204. The retaining wall 206 is provided to prevent the curing glue 3 from entering the interior of the lens when filling, so as to avoid contaminating the lens. At the same time, due to the existence of the retaining wall 206, the operator or machine can quickly and safely fill the curing glue 3, thereby improving work efficiency.

[0043] More specifically, a limiting protrusion is provided on the second welding protrusion 203, and the limiting protrusion abuts against the side of the first welding protrusion 102. The limiting protrusion is added to facilitate the initial positioning and installation of the first lens barrel 101 and the second lens barrel 204, that is, to ensure that the first welding protrusion 102 and the second welding protrusion 203 are aligned up and down.

[0044] During installation, inject curing glue 3 into the receiving groove 202 of the second lens barrel 204, extend the extension portion 104 of the first lens barrel 101 into the receiving groove 202, and rotate and align the first welding protrusion 102 and the second welding protrusion 203; align the first lens 1 and the second lens 2, and irradiate the curing glue 3 with a curing lamp, and after the curing lamp irradiation is completed, put the multiple groups of lenses into a baking oven for baking; weld and fix the first welding protrusion 102 and the second welding protrusion 203 with welding equipment, and after welding, put the multiple groups of lenses into a baking oven for baking to complete the assembly.

[0045] The present invention also provides a camera module, comprising the above-mentioned multiple group cameras.

[0046] In addition, the present invention also provides a car, comprising the above-mentioned camera module.

[0047] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A multi-group lens, characterized in that: include: A first lens (1) comprises a first lens barrel (101) and at least one first lens (103), wherein a first welding protrusion (102) is provided on the outer peripheral side of the first lens barrel (101); A second lens (2) comprises a second lens barrel (204) and at least one second lens (205), wherein a second welding protrusion (203) is arranged on the outer peripheral side of the second lens barrel (204), the first welding protrusion (102) and the second welding protrusion (203) are fixed by welding, and a receiving groove (202) is provided on the surface of the second lens barrel (204) facing the first lens barrel (101); The curing glue (3) is arranged in the containing groove (202) and is used to connect the first lens barrel (101) and the second lens barrel (204).

2. A multi-group lens according to claim 1, characterized in that: The first lens barrel (101) is provided with an extension portion (104) facing the second lens barrel (204), and the extension portion (104) extends into the receiving groove (202) and is bonded to the curing glue (3).

3. A multi-group lens according to claim 2, characterized in that: The width of the accommodating groove (202) is greater than the thickness of the extending portion (104).

4. The multi-group lens according to claim 1, characterized in that: There are a plurality of first welding protrusions (102), and there are also a plurality of corresponding second welding protrusions (203). The plurality of first welding protrusions (102) are evenly spaced and distributed on the outer peripheral side of the first lens barrel (101), and the plurality of second welding protrusions (203) are evenly spaced and distributed on the outer peripheral side of the second lens barrel (204).

5. The multi-group lens according to claim 1, characterized in that: A plurality of curing grooves (201) are provided on the surface of the second lens barrel (204) facing the first lens barrel (101), and the curing grooves (201) are in communication with the containing grooves (202).

6. The multi-group lens according to claim 4, characterized in that: A plurality of curing grooves (201) are provided on the surface of the second lens barrel (204) facing the first lens barrel (101); the curing grooves (201) are connected to the receiving groove (202); and the plurality of curing grooves (201) and the second welding protrusion (203) are arranged at intervals.

7. The multi-group lens according to claim 1, characterized in that: A retaining wall (206) is provided on the surface of the second lens barrel (204) facing the first lens barrel (101), and the retaining wall (206) is located on a side of the accommodating groove (202) close to the center of the second lens barrel (204).

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

9. A camera module, characterized in that: Comprising a plurality of group cameras as described in any one of claims 1-8.

10. An automobile, characterized in that: Comprising the camera module as described in claim 9.

Images