Lens assembly and preparation method thereof, and electronic equipment

Abstract

The invention provides a lens assembly and a preparation method thereof, and an electronic device, and relates to the field of imaging technology, the lens assembly comprises a lens barrel and a lens; the lens barrel extends along a first direction, an installation part and at least one positioning part are formed on the inner surface of the lens barrel, the at least one positioning part is arranged on the installation part, the positioning part extends along a second direction, and the second direction is perpendicular to the first direction; the lens comprises a main body and at least one limiting part which are connected, the main body is arranged in the mounting part, and a first gap is formed between the main body and the side wall of the mounting part; each limiting part is connected to one positioning part, a second gap is formed between the limiting part and the corresponding positioning part, and the width of the second gap is smaller than that of the first gap. The possibility of mutual contact between the main body and the side wall of the mounting part can be reduced, the possibility of extrusion deformation of the lens main body is reduced, and the imaging definition of the lens is improved.

Description

Technical Field

[0001] The present application relates to the field of imaging technologies, and particularly to a lens assembly, a preparation method thereof, and an electronic device. Background Art

[0002] With the continuous progress of imaging technology, the application scope of optical lenses is becoming more and more extensive, such as intelligent projection headlights. The intelligent projection headlights can achieve high-resolution projection while illuminating, which can not only assist driving, facilitate the interaction between people and vehicles, but also enhance the sense of technology and ceremony, meeting the market demand.

[0003] Currently, in order to pursue low cost and high quality, the glass-plastic hybrid solution is adopted as much as possible in the design of headlight lenses. Among them, plastic lenses mostly use materials with high transmittance such as PMMA, and the lens barrels mostly use materials with good high-temperature strength such as metal or fiberglass mixtures, such as BMC, PPS, etc.

[0004] For the lenses under these material combinations, the expansion coefficient of the lens barrel is generally only 1 / 4 to 1 / 2 of that of the plastic lens. At high temperatures, the expansion amount of the lens > the expansion amount of the lens barrel. Under the conventional fitting clearance, the plastic lens is extruded and deformed greatly, and the light cannot be coupled according to the designed optical path, resulting in blurred imaging. This situation is more obvious in the large-aperture lens solution, with greater extrusion deformation and more intractable problems.

[0005] The previous solutions would increase the fitting clearance between the lens barrel and the lens to prevent extrusion deformation. However, the lens assembly is sensitive to eccentricity under large clearances, which will affect the resolution. Or, some lenses adopt the design of wrapping the lens with the lens barrel. However, in this solution, the shrinkage amount of the lens is greater than that of the lens barrel at low temperatures, and there is a risk that the lens is extruded and broken by the lens barrel, and the lens is exposed and not beautiful, and it is easy to generate stray light and other problems. The outer diameter of the conventional lens and the inner diameter of the lens barrel are uneven plum blossom shapes. When being extruded at high temperatures, the lens is unevenly stressed and deformed unevenly. Summary of the Invention

[0006] The embodiments of the present application provide a lens assembly, a preparation method thereof, and an electronic device, which are used to solve the problem that when the environmental temperature where the lens assembly is located rises, the lens is prone to extrusion deformation and other situations, thus affecting the imaging clarity of the lens.

[0007] The lens assembly provided by the embodiments of the present application includes a lens barrel and a lens;

[0008] The lens barrel extends along a first direction, and an installation part and at least one positioning part are formed on the inner surface of the lens barrel. The at least one positioning part is arranged on the installation part, and the positioning part extends along a second direction, and the second direction is perpendicular to the first direction;

[0009] The lens includes a connected main body and at least one limiting part, the main body is arranged in the installation part, and each of the limiting parts is connected to one of the positioning parts.

[0010] By adopting the above technical solution, the lens is set to include a main body and a limiting part, and an installation part and a positioning part are formed on the inner surface of the lens barrel. When the main body is installed in the installation part, the lens can be relatively fixed in the installation part through the cooperation of the limiting part and the positioning part;

[0011] When the environmental temperature of the lens assembly rises, the main body and the limiting part expand due to heat, the gap between the main body and the side wall of the installation part decreases, and the gap between the limiting part and the corresponding positioning part decreases, so that the limiting part abuts tightly against the positioning part first, thereby reducing the possibility of the main body contacting the side wall of the installation part and reducing the possibility of the lens main body being extruded and deformed, and improving the imaging clarity of the lens.

[0012] In some possible implementation manners, a first gap is formed between the main body and the side wall of the installation part;

[0013] A second gap is formed between the limiting part and the corresponding positioning part.

[0014] In some possible implementation manners, the width X of the first gap satisfies the following formula:

[0015] X = (CTE1 - CTE2) × D1 × ΔT ≥ 0.002mm;

[0016] Wherein, CTE1 is the thermal expansion coefficient of the lens, CTE2 is the thermal expansion coefficient of the lens barrel, D1 is the outer diameter of the lens, and ΔT is the temperature difference between the operating temperature and the initial temperature of the lens assembly.

[0017] In some possible implementation manners, the width of the first gap is greater than or equal to 0.002 millimeters, and / or the width of the second gap is less than or equal to 0.2 millimeters.

[0018] In some possible implementation manners, the positional tolerance between the installation part and the positioning part is greater than or equal to -0.2 millimeters and less than or equal to 0.2 millimeters;

[0019] and / or the positional tolerance between the limiting part and the main body is greater than or equal to -0.2 millimeters and less than or equal to 0.2 millimeters.

[0020] In some possible implementation manners, at least part of the limiting part is set as a rectangular limiting part, and the rectangular limiting part has two first abutting surfaces and one second abutting surface;

[0021] The two first abutting surfaces are arranged parallel and opposite to each other, the first abutting surfaces extend along the second direction, and one side of the two first abutting surfaces facing away from the outer surface of the main body is connected by the second abutting surface, and the second abutting surface is perpendicular to the second direction;

[0022] A gap between the first abutting surface and the positioning portion forms the second gap, and the width of the second gap is less than or equal to the width of the gap between the second abutting surface and the positioning portion.

[0023] In some possible embodiments, each of the limiting portions is provided as a rectangular limiting portion, and the number of the rectangular limiting portions is greater than or equal to three.

[0024] In some possible embodiments, at least part of the limiting portions are provided as trapezoidal limiting portions, and the trapezoidal limiting portion has two first abutting surfaces and one second abutting surface;

[0025] The two first abutting surfaces are symmetrically arranged with respect to the second direction, the two first abutting surfaces approach each other in a direction away from the outer surface of the main body, and one side of the two first abutting surfaces facing away from the outer surface of the main body is connected by the second abutting surface, and the second abutting surface is perpendicular to the second direction;

[0026] A gap between the first abutting surface and the positioning portion forms the second gap, and the width of the second gap is less than or equal to the width of the gap between the second abutting surface and the positioning portion.

[0027] In some possible embodiments, the number of the limiting portions is greater than or equal to two.

[0028] In some possible embodiments, the first abutting surface is provided as an arc surface or a flat surface; and / or, the second abutting surface is provided as an arc surface or a flat surface.

[0029] In some possible embodiments, the main body includes at least one arc portion and at least one flat portion connected to each other;

[0030] At least part of the limiting portions are arranged on the arc portion, and / or, at least part of the limiting portions are arranged on the flat portion.

[0031] In some possible embodiments, the number of the arc portions and the number of the flat portions are both set to two;

[0032] The two arc portions and the two flat portions are alternately arranged in sequence, the two flat portions are arranged parallel and opposite to each other, the two arc portions are arranged opposite to each other, and the two arc portions both protrude in directions away from each other.

[0033] In some possible embodiments, the central axes of the two arc portions are coincidentally arranged, the central axis of the arc portion extends along the first direction, the distance between the central axis of the arc portion and the central axis of the lens barrel is less than or equal to 0.4 mm, and the second direction is parallel to the radial direction of the arc portion;

[0034] The number of the limiting portions is set to be multiple, the first portion of the limiting portion is arranged on one of the arc portions, and the second portion of the limiting portion is arranged on the other arc portion; the first portion of the limiting portion and the second portion of the limiting portion are symmetrically arranged with respect to the central axis of the arc portion.

[0035] In some possible embodiments, the third portion of the limiting portion is arranged on one of the flat portions, or the third portion of the limiting portion is evenly arranged on the two flat portions.

[0036] In some possible embodiments, the extending direction of the limiting portion passes through the center of the main body;

[0037] The number of the limiting portions is set to be three, the number of the first portion of the limiting portion is set to be one, the number of the second portion of the limiting portion is set to be one, and the number of the third portion of the limiting portion is set to be one.

[0038] In some possible embodiments, the extending direction of the limiting portion passes through the center of the main body;

[0039] The number of the limiting portions is set to be two, one of the limiting portions is located on the arc portion, and the other limiting portion is located on the flat portion, and the center line of one of the limiting portions is perpendicular to the center line of the other limiting portion.

[0040] In some possible embodiments, the extending direction of the third portion of the limiting portion passes through the center of the main body;

[0041] The extending direction of the first portion of the limiting portion and the extending direction of the second portion of the limiting portion are on the same straight line, and the extending direction of the first portion of the limiting portion is perpendicular to the extending direction of the third portion of the limiting portion.

[0042] In some possible embodiments, the shape of the limiting portion is set to be rectangular or U-shaped, the shapes of the limiting portions are the same, and the number of the limiting portions is set to be three.

[0043] In some possible embodiments, the shape of the limiting portion is set to be arc-shaped or trapezoidal, and the number of the limiting portions is set to be two.

[0044] In some possible embodiments, the shape of at least one of the limiting portions is set to be arc-shaped or trapezoidal, and the number of the limiting portions is set to be two.

[0045] In some possible embodiments, the shape of the limiting portion is set to be rectangular or U-shaped, the shape of at least one of the limiting portions is different from the shapes of the other limiting portions, and the number of the limiting portions is set to three.

[0046] In some possible embodiments, the shape of the limiting portion is set to be arc-shaped or polygonal, the shape of at least one of the limiting portions is different from the shapes of the other limiting portions, and the number of the limiting portions is set to two.

[0047] In some possible embodiments, the shape of the limiting portion is set to be rectangular or cylindrical, the shape of at least one of the limiting portions is different from the shapes of the other limiting portions, and the number of the limiting portions is set to three.

[0048] In some possible embodiments, the eccentricity of the main body is configured as: P = A + B + C;

[0049] Wherein, P is the eccentricity of the main body; A is the gap between the main body and the side wall of the mounting portion; B is the positional tolerance between the center of the limiting portion and the center of the main body; C is the positional tolerance between the center of the limiting portion and the lens barrel.

[0050] In some possible embodiments, at least part of the limiting portion is set as a convex limiting portion, at least part of the positioning portion is set as a concave positioning portion, and at least part of the convex limiting portion is inserted into the corresponding concave positioning portion;

[0051] In the first direction, the thickness of the convex limiting portion is greater than or equal to 0.1 mm and less than or equal to 10 mm; in the second direction, the length of the convex limiting portion is greater than or equal to 0.1 mm and less than or equal to 5 mm; in the direction perpendicular to the first direction and the second direction, the minimum value of the width of the convex limiting portion is greater than or equal to 0.1 mm and less than or equal to 10 mm.

[0052] In some possible embodiments, at least part of the limiting portion is set as a concave limiting portion, at least part of the positioning portion is set as a convex positioning portion, and at least part of the convex positioning portion is inserted into the corresponding concave limiting portion.

[0053] In some possible embodiments, the shape of at least part of the limiting portion is set to be one of an arc shape, a polygon, a U shape, a double arc shape, a cylindrical shape, and an elliptical shape.

[0054] In some possible embodiments, the lens is provided with a first constraint portion, the lens barrel is provided with a second constraint portion, and the first constraint portion cooperates with the second constraint portion;

[0055] There is a third gap between the first constraint part and the second constraint part, and the width of the third gap is greater than the width of the first gap.

[0056] An embodiment of the present application further provides a method for manufacturing a lens assembly, including:

[0057] Providing a lens barrel and a lens, the lens barrel extends along a first direction, and a mounting part is formed on the inner surface of the lens barrel, and the lens includes a main body;

[0058] Forming at least one positioning part on the mounting part and at least one limiting part on the main body; the positioning part extends along a second direction, and the second direction is perpendicular to the first direction;

[0059] Mounting the main body in the mounting part, and each of the limiting parts is connected to one of the positioning parts.

[0060] By adopting the above technical solution, by setting the lens to include a main body and a limiting part, and forming a mounting part and a positioning part on the inner surface of the lens barrel, when the main body is mounted in the mounting part, the lens can be relatively fixed in the mounting part by the cooperation of the limiting part and the positioning part;

[0061] When the environmental temperature of the lens assembly rises, the main body and the limiting part expand due to heat, the gap between the main body and the side wall of the mounting part decreases, and the gap between the limiting part and the corresponding positioning part decreases, so that the limiting part tightly abuts against the positioning part first, thereby reducing the possibility of the main body and the side wall of the mounting part coming into contact with each other, reducing the possibility of the lens main body being extruded and deformed, and improving the imaging clarity of the lens.

[0062] An embodiment of the present application further provides an electronic device, including the lens assembly described in any one of the above.

[0063] Since the electronic device includes the lens assembly described in any one of the above, therefore, the electronic device has the advantages of the lens assembly described in any one of the above. For specific details, please refer to the relevant descriptions above and will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] The accompanying drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present application and used together with the specification to explain the principles of the present application.

[0065] Figure 1 It is a schematic structural diagram of the lens assembly provided by the embodiment of the present application;

[0066] Figure 2 It is a schematic structural diagram of the lens assembly from another perspective provided by the embodiment of the present application;

[0067] Figure 3Schematic diagram of the structure of a lens module according to another embodiment provided by the present application;

[0068] Figure 4 Provided by the embodiments of the present application Figure 2 Partial enlarged schematic diagram of the lens module in;

[0069] Figure 5 Provided by the embodiments of the present application Figure 3 Partial enlarged schematic diagram of the lens module in;

[0070] Figure 6 Schematic diagram of the structure of a lens module according to another embodiment provided by the present application;

[0071] Figure 7 Schematic diagram of the structure of a lens module according to another embodiment provided by the present application;

[0072] Figure 8 Schematic diagram of the structure of a lens module according to another embodiment provided by the present application;

[0073] Figure 9 Schematic diagram of the structure of a lens module according to another embodiment provided by the present application;

[0074] Figure 10 Schematic diagram of the structure of a lens module according to another embodiment provided by the present application;

[0075] Figure 11 Schematic diagram of the structure of a lens module according to another embodiment provided by the present application;

[0076] Figure 12 Schematic diagram of the structure of a lens module according to another embodiment provided by the present application;

[0077] Figure 13 Partial enlarged schematic diagram of the lens module according to another embodiment provided by the present application;

[0078] Figure 14 Partial enlarged schematic diagram of the lens module according to another embodiment provided by the present application;

[0079] Figure 15 Partial enlarged schematic diagram of the lens module according to another embodiment provided by the present application;

[0080] Figure 16 Schematic diagram of the structure of a lens module according to another embodiment provided by the present application;

[0081] Figure 17Schematic diagram of the enlarged partial structure of the lens assembly according to another embodiment provided by the present application;

[0082] Figure 18 Schematic diagram of the lens assembly provided by the embodiment of the present application, which has a first constraint portion and a second constraint portion;

[0083] Figure 19 Schematic diagram of the lens assembly provided by another embodiment of the present application, which has a first constraint portion and a second constraint portion;

[0084] Figure 20 Schematic diagram of the process of the preparation method of the lens assembly provided by the embodiment of the present application.

[0085] Explanation of reference numerals:

[0086] 100, lens barrel;

[0087] 110, mounting portion; 111, positioning portion; 120, second constraint portion;

[0088] 200, lens;

[0089] 210, main body; 211, arc portion; 212, flat portion; 220, limiting portion; 221, first abutting surface; 222, second abutting surface; 230, first constraint portion;

[0090] 300, first gap;

[0091] 400, second gap;

[0092] 500, functional element;

[0093] 600, third gap.

[0094] Through the above-mentioned drawings, the clear embodiments of the present application have been shown, and there will be more detailed descriptions hereinafter. These drawings and the textual descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. Detailed embodiments

[0095] The lens assembly includes a lens barrel and a lens. The lens is installed inside the lens barrel to fix the lens through the lens barrel. For example, the inner wall of the lens barrel may be formed with a mounting portion to accommodate the lens through the mounting portion. However, when the environmental temperature of the lens assembly rises, the lens and the lens barrel are prone to thermal expansion. Moreover, due to the different expansion coefficients of the lens and the lens barrel, the deformation amount of the lens is usually greater than that of the lens barrel, making the lens in close contact with the side wall of the mounting portion of the lens barrel, and even making the lens prone to extrusion deformation and other situations, thus affecting the imaging clarity of the lens.

[0096] To solve the above technical problems, an embodiment of the present application provides a lens assembly, a preparation method thereof, and an electronic device. The lens assembly is configured such that the lens is provided with a main body and a limiting portion, and an installation portion and a positioning portion are formed on the inner surface of the lens. When the main body is installed in the installation portion, a first gap is formed between the side wall of the main body and the installation portion, and a second gap is formed between the limiting portion and the corresponding positioning portion. Thus, the lens can be relatively fixed in the installation portion by the cooperation of the limiting portion and the positioning portion.

[0097] When the environmental temperature of the lens assembly rises, the main body and the limiting portion expand due to heat. The first gap between the side wall of the main body and the installation portion decreases, and the second gap between the limiting portion and the corresponding positioning portion decreases. Since the width of the second gap is smaller than that of the first gap, the limiting portion first comes into close contact with the positioning portion, thereby reducing the possibility of the side wall of the main body coming into contact with the installation portion and reducing the possibility of the lens main body being extruded and deformed, and improving the imaging clarity of the lens.

[0098] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0099] The technical solutions of the present application and how the technical solutions of the present application solve the above technical problems will be described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below with reference to the drawings.

[0100] Referring to Figure 1 , an embodiment of the present application provides a lens assembly, including a lens barrel 100 and a lens 200. The lens barrel 100 can extend along a first direction (i.e., the x direction in the figure). An installation portion 110 and at least one positioning portion 111 are formed on the inner surface of the lens barrel 100. The installation portion 110 is used for installing the lens 200, and the positioning portion 111 is disposed in the installation portion 110. The positioning portion 111 can extend along a second direction (i.e., the y direction in the figure). Among them, the first direction can be parallel to the axial direction of the lens 200 and the lens barrel 100, and the first direction can be perpendicular to the second direction, that is, the second direction can be perpendicular to the axial direction of the lens 200 and the lens barrel 100.

[0101] Referring to Figure 2 and Figure 3, Exemplarily, the lens 200 may include a connected main body 210 and at least one limiting portion 220. The main body 210 is disposed within the mounting portion 110, and a first gap 300 is formed between the main body 210 and the side wall of the mounting portion 110; each limiting portion 220 is connected to a positioning portion 111, and a second gap 400 is formed between the limiting portion 220 and the corresponding positioning portion 111, and the width of the second gap 400 is smaller than the width of the first gap 300.

[0102] Referring to Figure 2 and Figure 5 , it is easy to understand that, among the mating positioning portion 111 and limiting portion 220, the positioning portion 111 may be set as a concave positioning portion 111, and the limiting portion 220 may be correspondingly set as a convex limiting portion 220, so that the convex limiting portion 220 can be correspondingly inserted into the concave positioning portion 111, so as to relatively fix the main body 210 within the mounting portion 110 of the lens barrel 100 through the concave positioning portion 111 and the convex limiting portion 220;

[0103] Or, referring to Figure 3 and Figure 5 , among the mating positioning portion 111 and limiting portion 220, the positioning portion 111 may be set as a convex positioning portion 111, and the limiting portion 220 may be correspondingly set as a concave limiting portion 220, so that the convex positioning portion 111 can be correspondingly inserted into the concave limiting portion 220, so as to relatively fix the main body 210 within the mounting portion 110 of the lens barrel 100 through the convex positioning portion 111 and the concave limiting portion 220, thereby realizing the fixation of the lens 200 and the lens barrel 100.

[0104] In some possible implementation manners, the main body 210 may be set as a concave lens main body 210 or a flat main body 210, the main body 210 may also be set as a convex lens main body 210, and the main body 210 may protrude toward the end of the lens barrel 100, that is, the protruding surface of the main body 210 may face away from the functional element 500 within the lens barrel 100; or, the main body 210 may also protrude toward the inside of the lens barrel 100, that is, the protruding surface of the main body 210 may face the functional element 500 within the lens barrel 100, so that the functional element 500 located within the lens barrel 100 can obtain a larger imaging angle of view through the convex lens main body 210.

[0105] , Exemplarily, the material of the lens 200 may be set as plastic, glass, etc. In a plane perpendicular to the first direction, the main body 210 may be set as a square main body 210 or a circular main body 210, or the shape of the main body 210 may also be adjusted according to the size and installation position of the lens barrel 100.

[0106] In the cooperating lens barrel 100 and lens 200, the number of positioning portions 111 and the number of limiting portions 220 can be set to a plurality. The plurality of limiting portions 220 and the plurality of positioning portions 111 are arranged in one-to-one correspondence, so that the limiting portion 220 can cooperate with the corresponding positioning portion 111 to achieve the limitation between the lens 200 and the lens barrel 100.

[0107] It should be noted that the number of positioning portions 111 and the number of limiting portions 220 can be adjusted according to the shapes of the limiting portion 220 and the main body 210, as well as the sizes of the limiting portion 220 and the main body 210. Moreover, when the number of positioning portions 111 and the number of limiting portions 220 are more, the connection between the lens 200 and the lens barrel 100 is more stable, and the possibility of the lens 200 rotating around the central axis in the lens barrel 100 is smaller.

[0108] Refer to Figures 6 - 10 , by way of example, the main body 210 may include at least one arc portion 211 and at least one flat portion 212 connected to each other. For example, the main body 210 may include two arc portions 211 and two flat portions 212. Among them, the two arc portions 211 and the two flat portions 212 may be arranged alternately in sequence. Each arc portion 211 is connected to two flat portions 212, and each flat portion 212 is connected to two arc portions 211. The two flat portions 212 are arranged parallel and opposite to each other, and the two arc portions 211 are arranged opposite to each other. The two arc portions 211 both protrude in the direction away from each other.

[0109] The central axes of the two arc portions 211 can be arranged to coincide. The central axis of the arc portion 211 can extend in the first direction. The distance between the central axis of the arc portion 211 and the central axis of the lens barrel 100 can be less than or equal to 0.4 mm to improve the coaxiality between the main body 210 and the lens barrel 100.

[0110] By setting the main body 210 to include two arc portions 211 and two flat portions 212 arranged alternately in sequence, the flat portion 212 and the arc portion 211 can play a certain role in positioning and limiting the lens 200, making the installation of the lens 200 more convenient and reducing the possibility of the lens 200 rotating around the central axis of the lens barrel 100.

[0111] By way of example, at least part of the limiting portion 220 can be arranged on the arc portion 211, and / or at least part of the limiting portion 220 can be arranged on the flat portion 212, and the second direction can be parallel to the radial direction of the arc portion 211, that is, the extending direction of the limiting portion 220 can be parallel to the radial direction of the arc portion 211, so as to cooperate with the positioning portion 111 through the limiting portion 220 and reduce the possibility of the main body 210 rotating around the central axis in the mounting portion 110.

[0112] Refer to Figures 6 - 8, when the number of the limiting parts 220 is set to be multiple, the first part of the limiting part 220 can be arranged on one of the arc parts 211, and the second part of the limiting part 220 is arranged on another arc part 211; the number of the first parts of the limiting part 220 can be equal to the number of the second parts of the limiting part 220, and the first part of the limiting part 220 and the second part of the limiting part 220 can be arranged in central symmetry with respect to the central axis of the arc part 211.

[0113] Or, referring to Figure 9 , the first part of the limiting part 220 and the second part of the limiting part 220 can also be arranged in central symmetry with respect to the central axis of the flat part 212, so as to improve the connection stability between the main body 210 of the lens 200 and the lens barrel 100.

[0114] For example, the number of the first parts of the limiting part 220 and the number of the second parts of the limiting part 220 are both set to be one or two. When the number of the first parts of the limiting part 220 and the number of the second parts of the limiting part 220 are both set to be two, in the first part of the limiting part 220, the two limiting parts 220 can be arranged along the direction perpendicular to the flat part 212, and in the second part of the limiting part 220, the two limiting parts 220 can be arranged along the direction perpendicular to the flat part 212.

[0115] It is easy to understand that when the main body 210 of the lens 200 is located in the installation part 110, since the central axes of the two arc parts 211 are arranged to coincide, the main body 210 can rotate around the central axis of the arc part 211 in the installation part 110, so that the main body 210 of the lens 200 is displaced, affecting the connection stability between the lens and the lens barrel 100.

[0116] By arranging the second direction parallel to the radial direction of the arc part 211, the limiting part 220 can be matched with the corresponding positioning part 111, so that the limiting part 220 plays a certain role in radial positioning of the main body 210, reducing the possibility of the main body 210 rotating around the central axis of the arc part 211 in the installation part 110, and making the connection between the lens and the lens barrel 100 more stable.

[0117] Or, in the first part and the second part of the limiting part 220, the second direction can also be arranged parallel to the flat part 212, that is, both the first part and the second part of the limiting part 220 can be arranged parallel to the flat part 212, and the first part of the limiting part 220 and the second part of the limiting part 220 can be arranged in central symmetry with respect to the central axis of the flat part 212, so as to improve the connection stability between the main body 210 of the lens 200 and the lens barrel 100.

[0118] Exemplarily, the plurality of limiting portions 220 may further include a third portion. The third portion of the limiting portion 220 may be disposed on one of the planar portions 212, or the third portion of the limiting portion 220 may be evenly disposed on the two planar portions 212.

[0119] For example, the number of the third portions of the limiting portion 220 may be set to one or more. When the number of the third portions of the limiting portion 220 is set to one, the third portion of the limiting portion 220 may be disposed on one of the planar portions 212; when the number of the third portions of the limiting portion 220 is set to multiple, all of the third portions of the limiting portion 220 may be disposed on one of the planar portions 212, or the third portion of the limiting portion 220 may be evenly disposed on the two planar portions 212.

[0120] By adopting the above technical solution, when the lens 200 is installed in the lens barrel 100, the main body 210 of the lens 200 can be placed in the installation portion 110, so that the plurality of limiting portions 220 can be correspondingly disposed on the corresponding positioning portions 111, thereby playing a certain positioning role in the installation process of the lens 200 through the plurality of limiting portions 220 and the plurality of positioning portions 111, making the installation process of the lens 200 more convenient.

[0121] Moreover, by connecting the plurality of limiting portions 220 to the main body 210 of the lens 200, when the main body 210 is installed in the installation portion 110, the limiting portion 220 can cooperate with the corresponding positioning portion 111, thereby reducing the possibility of the main body 210 of the lens 200 rotating around the first direction in the installation portion 110, making the connection between the main body 210 of the lens 200 and the lens barrel 100 more stable.

[0122] Refer to Figures 12 - 15 , in some possible implementation manners, the width X of the first gap 300 satisfies the following formula:

[0123] X = (CTE1 - CTE2) × D1 × ΔT ≥ 0.002 mm;

[0124] wherein, CTE1 is the thermal expansion coefficient of the lens 200, CTE2 is the thermal expansion coefficient of the installation barrel 100, D1 is the outer diameter of the lens 200, and ΔT is the temperature difference between the temperature at which the lens assembly is used and the initial temperature.

[0125] In some possible implementation manners, in the mutually cooperating positioning portion 111 and limiting portion 220, the width of the first gap 300 is greater than or equal to 0.002 millimeters. For example, the width of the first gap 300 may be set to one of 0.002 millimeters, 0.02 millimeters, 0.05 millimeters, 0.1 millimeters, 0.15 millimeters, 0.2 millimeters, and 0.25 millimeters. The width of the first gap 300 can be adjusted according to the size of the main body 210, and the embodiments of the present application do not make further limitations thereon.

[0126] And / or, the width of the second gap 400 is less than or equal to 0.2 mm. For example, the width of the second gap 400 can be set to one of 0.001 mm, 0.01 mm, 0.03 mm, 0.08 mm, 0.12 mm, 0.15 mm, and 0.2 mm. Moreover, the width of the second gap 400 can be adjusted according to the width of the first gap 300 and the expansion coefficients of the main body 210 and the limiting portion 220, so as to reduce the possibility of the main body 210 contacting and squeezing the side wall of the mounting portion 110.

[0127] It should be noted that the width of the second gap 400 is less than the width of the first gap 300. When the width of the first gap 300 is set to 0.002 mm, the width of the second gap 400 can be correspondingly set to 0.001 mm; when the width of the second gap 400 is set to 0.2 mm, the width of the first gap 300 can be correspondingly set to 0.25 mm, so that the width of the second gap 400 is less than the width of the first gap 300.

[0128] By adopting the above technical solution, compared with when the lens assembly is in a normal temperature environment, when the environmental temperature of the lens assembly rises, the main body 210 and the limiting portion 220 expand due to heat, the first gap 300 between the main body 210 and the side wall of the mounting portion 110 decreases, and the second gap 400 between the limiting portion 220 and the corresponding positioning portion 111 decreases. Since the width of the second gap 400 is less than the width of the first gap 300, the limiting portion 220 can first closely abut against the positioning portion 111, thereby reducing the possibility of the main body 210 contacting the side wall of the mounting portion 110, reducing the possibility of the main body 210 of the lens 200 being squeezed and deformed, and improving the imaging clarity of the lens 200.

[0129] It should be noted that when the environmental temperature of the lens assembly rises, the first gap 300 between the main body 210 and the side wall of the mounting portion 110 decreases. The first gap 300 can be set to be greater than or equal to 0 to reduce the possibility of the main body 210 contacting the side wall of the mounting portion 110. The size of the first gap 300 can be determined according to the environmental temperature and the expansion coefficient of the main body 210, and the embodiments of the present application do not further limit this.

[0130] The size of the second gap 400 can be set to the width of the minimum gap between the limiting part 220 and the corresponding positioning part 111. When the gap between the limiting part 220 and the corresponding positioning part 111 is uneven, the width of the second gap 400 is less than the width of the first gap 300, and the width of some part of the gap between the limiting part 220 and the corresponding positioning part 111 can be greater than or equal to the width of the first gap 300; that is, when the ambient temperature of the lens assembly rises, the limiting part 220 and the corresponding positioning part 111 can be in close contact, so as to relatively fix the lens 200 within the mounting part 110.

[0131] Exemplarily, the positional tolerance between the mounting part 110 and the positioning part 111 can be set to be greater than or equal to -0.2 mm and less than or equal to 0.2 mm; and / or, the positional tolerance between the limiting part 220 and the main body 210 can be set to be greater than or equal to -0.2 mm and less than or equal to 0.2 mm.

[0132] For example, the positional tolerance between the mounting part 110 and the positioning part 111 can be set to be one of -0.2 mm, -0.1 mm, 0, 0.1 mm, and 0.2 mm, and the positional tolerance between the limiting part 220 and the main body 210 can be set to be one of -0.2 mm, -0.1 mm, 0, 0.1 mm, and 0.2 mm, so as to improve the positional accuracy of the connection between the lens 200 and the lens barrel 100 and ensure that the width of the second gap 400 can be less than the width of the first gap 300.

[0133] Exemplarily, the eccentricity of the main body 210 is: P = A + B + C; where P is the eccentricity of the main body 200; A is the gap between the main body 200 and the side wall of the mounting part 110; B is the positional tolerance between the center of the limiting part 220 and the center of the main body 210; C is the positional tolerance between the center of the limiting part 220 and the lens barrel 100.

[0134] In some possible implementation manners, among the mating positioning part 111 and limiting part 220, the positioning part 111 can be set as a concave positioning part 111, and the limiting part 220 can be correspondingly set as a convex limiting part 220.

[0135] Exemplarily, at least part of the limiting part 220 can be set as a rectangular limiting part 220, at least part of the positioning part 111 is correspondingly set as a rectangular positioning part 111, and the rectangular positioning part 111 and the rectangular limiting part 220 are arranged in one-to-one correspondence.

[0136] Refer to Figures 12 - 15, Exemplarily, in the rectangular limiting portion 220, the rectangular limiting portion 220 has two first abutting surfaces 221 and a second abutting surface 222. The two first abutting surfaces 221 can be arranged parallel and opposite to each other. The first abutting surface 221 extends along the second direction. The side of the two first abutting surfaces 221 facing away from the outer surface of the main body 210 is connected by the second abutting surface 222, and the second abutting surface 222 can be perpendicular to the second direction.

[0137] Between the mating rectangular limiting portion 220 and the rectangular positioning portion 111, the gap between the first abutting surface 221 and the rectangular positioning portion 111 can form a second gap 400, and the width of the second gap 400 can be less than or equal to the width of the gap between the second abutting surface 222 and the rectangular positioning portion 111.

[0138] It is easy to understand that when the lens 200 main body 210 rotates around the first direction within the mounting portion 110, the first abutting surface 221 of the rectangular limiting portion 220 can contact the side wall of the rectangular positioning portion 111, so that the rectangular limiting portion 220 can cooperate with the rectangular positioning portion 111 to reduce the possibility of the lens 200 main body 210 moving;

[0139] Moreover, the width of the second gap 400 can be less than or equal to the width of the gap between the second abutting surface 222 and the rectangular positioning portion 111; when the ambient temperature of the lens assembly rises, the main body 210 and the rectangular limiting portion 220 expand due to heat. The first abutting surface 221 of the rectangular limiting portion 220 can first contact the side wall of the rectangular positioning portion 111. By setting the gap between the first abutting surface 221 and the rectangular positioning portion 111 as the second gap 400, the possibility of extrusion between the first abutting surface 221 and the rectangular positioning portion 111 can be reduced, and the possibility of fracture or even detachment between the rectangular limiting portion 220 and the main body 210 can be reduced.

[0140] It should be noted that referring to Figure 11 , the width of the second gap 400 is set as the distance between the first abutting surface 221 of the rectangular limiting portion 220 and the side wall of the rectangular positioning portion 111. When the lens 200 main body 210 rotates around the first direction within the mounting portion 110, one of the first abutting surfaces 221 of the rectangular limiting portion 220 contacts the side wall of the rectangular positioning portion 111, and the distance between the other first abutting surface 221 of the rectangular limiting portion 220 and the side wall of the rectangular positioning portion 111 away from it should be equal to twice the second gap 400 to ensure the stability of the connection between the lens 200 and the lens barrel 100.

[0141] It should be noted that between the mutually cooperating rectangular limiting portion 220 and rectangular positioning portion 111, the rectangular limiting portion 220 and rectangular positioning portion 111 can play a role in radially positioning the lens 200, so as to reduce the possibility of the lens 200 rotating around the rotation axis within the mounting portion 110 and increase the stability of the lens 200 within the mounting portion 110.

[0142] Exemplarily, the main body 210 includes two arc-shaped portions 211 and two planar portions 212, wherein the two arc-shaped portions 211 and the two planar portions 212 are alternately arranged in sequence; the number of the rectangular limiting portions 220 and the number of the rectangular positioning portions 111 can both be set to at least three. When the number of the rectangular limiting portions 220 is set to three, two of the rectangular limiting portions 220 can be respectively arranged on the two arc-shaped portions 211, and the other rectangular limiting portion 220 is arranged on one of the planar portions 212, so as to improve the stability of the lens 200 through multiple limiting portions 220.

[0143] In some possible implementation manners, among the mutually cooperating positioning portion 111 and limiting portion 220, at least part of the limiting portion 220 can be set as a trapezoidal limiting portion 220. The trapezoidal limiting portion 220 has two first abutting surfaces 221 and one second abutting surface 222. The positioning portion 111 can be correspondingly set as a trapezoidal positioning portion 111, and the trapezoidal positioning portion 111 and the trapezoidal limiting portion 220 are arranged in one-to-one correspondence.

[0144] Exemplarily, the two first abutting surfaces 221 can be symmetrically arranged with respect to the second direction. The two first abutting surfaces 221 approach each other in a direction away from the outer surface of the main body 210. One side of the two first abutting surfaces 221 away from the outer surface of the main body 210 is connected by the second abutting surface 222, and the second abutting surface 222 is perpendicular to the second direction.

[0145] Between the mutually cooperating trapezoidal limiting portion 220 and trapezoidal positioning portion 111, a gap between the first abutting surface 221 of the trapezoidal limiting portion 220 and the trapezoidal positioning portion 111 forms a second gap 400, and the width of the second gap 400 is less than or equal to the width of the gap between the second abutting surface 222 of the trapezoidal limiting portion 220 and the trapezoidal positioning portion 111.

[0146] It is easy to understand that when the lens 200 main body 210 rotates around the first direction within the mounting portion 110, the first abutting surface 221 of the trapezoidal limiting portion 220 can contact the side wall of the trapezoidal positioning portion 111, so that the trapezoidal limiting portion 220 can cooperate with the trapezoidal positioning portion 111 to reduce the possibility of the lens 200 main body 210 moving;

[0147] Moreover, the width of the second gap 400 can be less than or equal to the width of the gap between the second abutting surface 222 and the trapezoidal positioning portion 111; when the ambient temperature of the lens assembly rises, the main body 210 and the trapezoidal limiting portion 220 expand due to heat, and the first abutting surface 221 of the trapezoidal limiting portion 220 can first come into contact with the side wall of the trapezoidal positioning portion 111. By setting the gap between the first abutting surface 221 and the trapezoidal positioning portion 111 as the second gap 400, the extrusion between the first abutting surface 221 and the trapezoidal positioning portion 111 can be reduced, thereby reducing the possibility of fracture or even detachment between the trapezoidal limiting portion 220 and the main body 210.

[0148] It should be noted that the width of the second gap 400 is set as the distance between the first abutting surface 221 of the trapezoidal limiting portion 220 and the side wall of the trapezoidal positioning portion 111. When the lens 200 main body 210 rotates around the first direction within the installation portion 110, one of the first abutting surfaces 221 of the trapezoidal limiting portion 220 comes into contact with the side wall of the trapezoidal positioning portion 111, and the distance between the other first abutting surface 221 of the trapezoidal limiting portion 220 and the side wall of the trapezoidal positioning portion 111 away from it should be equal to twice the second gap 400 to ensure the stability of the connection between the lens 200 and the lens barrel 100.

[0149] In the trapezoidal limiting portion 220, the first abutting surface 221 is set as an arc surface or a flat surface; and / or, the second abutting surface 222 is set as an arc surface or a flat surface. The embodiments of the present application do not further limit this, as long as the stability of the connection between the trapezoidal limiting portion 220 and the trapezoidal positioning portion 111 can be ensured.

[0150] It is easy to understand that among multiple limiting portions 220, some limiting portions 220 can be set as rectangular limiting portions 220, and some limiting portions 220 can be set as trapezoidal limiting portions 220; correspondingly, among multiple positioning portions 111, some positioning portions 111 can be set as rectangular positioning portions 111, and some positioning portions 111 can be set as trapezoidal positioning portions 111. The rectangular positioning portions 111 and the rectangular limiting portions 220 are arranged in one-to-one correspondence, and the trapezoidal positioning portions 111 and the trapezoidal limiting portions 220 are arranged in one-to-one correspondence.

[0151] Moreover, the main body 210 includes two arc portions 211 and two flat portions 212, where the two arc portions 211 and the two flat portions 212 are alternately arranged in sequence; the limiting portion 220 is set as a trapezoidal limiting portion 220, and the positioning portion 111 is correspondingly set as a trapezoidal positioning portion 111. The number of trapezoidal limiting portions 220 and the number of trapezoidal positioning portions 111 can both be set to at least two. When the number of trapezoidal limiting portions 220 is set to two, the two trapezoidal limiting portions 220 can be respectively arranged on the two arc portions 211, or the two trapezoidal limiting portions 220 can be respectively arranged on the two flat portions 212.

[0152] It is worth mentioning that an included angle is formed between the two second abutting surfaces 222 of the trapezoidal limiting portion 220, so that the two second abutting surfaces 222 cooperate to be able to play a certain limiting role in the movement of the trapezoidal limiting portion 220 in multiple directions, so that the limiting of the main body 210 can be realized only by the two trapezoidal limiting portions 220.

[0153] It is easy to understand that the limiting portion 220 and the positioning portion 111 can also be set to other shapes such as circular arcs, pentagons, and ellipses, so that the limiting portion 220 can be in close contact with the corresponding positioning portion 111. And when the limiting portion 220 is set to other polygons such as pentagons, the limiting portion 220 can contact the corresponding positioning portion 111 from multiple angles, thereby reducing the possibility of the lens 200 moving within the mounting portion 110.

[0154] In some possible implementation manners, the extending direction of the limiting portion 220 can pass through the center of the main body 210; the number of the limiting portions 220 is set to three, the number of the first part of the limiting portion 220 is set to one, the number of the second part of the limiting portion 220 is set to one, the number of the third part of the limiting portion 220 is set to one, and the extending direction of the first part of the limiting portion 220 is perpendicular to the extending direction of the third part of the limiting portion 220.

[0155] Or, the extending direction of the limiting portion 220 passes through the center of the main body 210, the number of the limiting portions 220 can also be set to two, one of the limiting portions 220 is located at the arc portion 211, and the other limiting portion 220 is located at the flat portion 212, and the center line of one of the limiting portions 220 is perpendicular to the center line of the other limiting portion 220.

[0156] Or, the extending direction of the third part of the limiting portion 220 passes through the center of the main body 210, the extending direction of the first part of the limiting portion 220 and the extending direction of the second part of the limiting portion 220 are on the same straight line, and the extending direction of the first part of the limiting portion 220 is perpendicular to the extending direction of the third part of the limiting portion 220.

[0157] The shape of the limiting portion 220 is set to be rectangular or U-shaped, the shapes of the limiting portions 220 are the same, and the number of the limiting portions 220 is set to three. Or, the shape of the limiting portion 220 is set to be rectangular or U-shaped, the shape of at least one limiting portion 220 is different from the shapes of the other limiting portions 220, and the number of the limiting portions 220 is set to three. Or, the shape of the limiting portion 220 is set to be rectangular or cylindrical, the shape of at least one limiting portion 220 is different from the shapes of the other limiting portions 220, and the number of the limiting portions 220 is set to three.

[0158] The shape of the limiting part 220 is set as arc or trapezoid, and the number of the limiting parts 220 is set as two. Or, the shape of at least one limiting part 220 is set as arc or trapezoid, and the number of the limiting parts 220 is set as two. Or, the shape of the limiting part 220 is set as arc or polygon, the shape of at least one limiting part 220 is different from that of other limiting parts 220, and the number of the limiting parts 220 is set as two.

[0159] In some possible implementation manners, in the first direction, the thickness of the convex limiting part 220 may be greater than or equal to 0.1 mm and less than or equal to 10 mm; in the second direction, the length of the convex limiting part 220 may be greater than or equal to 0.1 mm and less than or equal to 5 mm; in the direction perpendicular to the first direction and the second direction, the minimum value of the width of the convex limiting part 220 is greater than or equal to 0.1 mm and less than or equal to 10 mm.

[0160] Exemplarily, the thickness, length and width of the convex limiting part 220 can be adjusted according to actual situations. For example, the thickness, length and width of the convex limiting part 220 can be defined according to the size of the main body 210 and the connection manner between the convex limiting part 220 and the concave positioning part 111.

[0161] The size of the convex limiting structure 220 can satisfy the following formula:

[0162] H×L=K[(W1×CTE1×△T+W1)-(W2×CTE2×△T+W2)] / [σ2]≥0.01mm 2 ;

[0163] Wherein, L is the length of the convex limiting structure 220, H is the thickness of the convex limiting structure 220, CTE1 is the thermal expansion coefficient of the lens 200, CTE2 is the thermal expansion coefficient of the mounting cylinder 100, W1 is the height of the convex limiting structure 200, W2 is the depth of the concave positioning structure 111, and ΔT is the temperature difference between the temperature at which the lens assembly is used and the initial temperature.

[0164] Moreover, when the convex limiting part 220 cooperates with the corresponding concave positioning part 111, a point bearing can be formed between the convex limiting part 220 and the concave positioning part 111, so as to reduce the friction force between the convex limiting part 220 and the concave positioning part 111, reduce the possibility of jamming between the convex limiting part 220 and the concave positioning part 111, and make the disassembly and assembly process between the convex limiting part 220 and the concave positioning part 111 more convenient.

[0165] When installing the lens 200 into the lens barrel 100, an adhesive layer can be first coated on the bottom surface and side wall of the installation part 110, and then the main body 210 of the lens 200 is placed into the installation part 110 so that the main body 210 of the lens 200 can be in contact with the adhesive layer, thereby realizing the fixation of the main body 210 of the lens 200 and the lens barrel 100.

[0166] The shape of the limiting part 220 is set as one of an arc shape, a polygon, a U shape, a double arc shape, a cylindrical shape, and an elliptical shape. When the shape of the limiting part 220 is set as a polygon, the shape of the limiting part 220 can be set as a rectangle or a trapezoid, etc. The embodiments of the present application do not further limit this.

[0167] For example, referring to Figure 16 and Figure 17 , the shape of the limiting part 220 can be set as a U shape, and the shape of the positioning part 111 is correspondingly set as a U shape.

[0168] It should be noted that among multiple limiting parts 220, the shapes of some limiting parts 220 can be set differently from those of the remaining limiting parts 220. For example, some limiting parts 220 can be set as rectangular limiting parts 220, and the remaining limiting parts 220 can be set as trapezoidal limiting parts 220, so as to limit different angles of the lens 200 through the limiting parts 220 with different shapes, and further improve the fixing effect of the limiting part 200 on the main body 210 of the lens 200.

[0169] The following takes the use environment temperature set as 95 degrees Celsius, the assembly temperature set as 25 degrees Celsius, and the difference between the use environment temperature and the assembly environment temperature as 75 degrees Celsius; the material of the lens barrel 100 is set as bulk molding compound (i.e., BMC for short), the diameter of the lens barrel 100 is set as 58 millimeters, and the expansion coefficient of the lens barrel 100 is 2.5×10 -5 / °C; and the diameter of the lens 200 is set as 52 millimeters as an example. The material of the lens 200 is set as polymethyl methacrylate (i.e., PMMA for short), and the expansion coefficient of the lens 200 is set as 8×10 -5 / °C as an example to describe the design process of the lens 200.

[0170] In a plane perpendicular to the first direction, the expansion amount G1 of the lens 200 is 0.2912 millimeters, the expansion amount G2 of the lens barrel 100 is 0.1015 millimeters, and the difference G1 - G2 between the expansion amounts of the lens 200 and the lens barrel 100 is 0.1897 millimeters. Therefore, when the first gap 300 is greater than 0.1897 millimeters, when the use environment temperature rises to 95 degrees Celsius, the lens 200 will not contact the inner wall of the lens barrel 100, thereby reducing the possibility of the lens 200 being extruded and deformed.

[0171] It is easily understood that the expansion amount of the lens 200 is positively correlated with the diameter of the lens 200, such that the larger the size of the lens 200, the greater the expansion amount of the lens 200 under the condition of temperature increase. The embodiments of the present application are applicable to selecting a large-size lens 200 and increasing the width of the first gap 300 to reduce the possibility of mutual extrusion between the lens 200 and the inner wall of the mounting portion 110.

[0172] In some possible implementation manners, the lens 200 is further provided with a first constraint portion 230, and the lens barrel 100 is provided with a second constraint portion 120, and the first constraint portion 230 cooperates with the second constraint portion 120; among the first constraint portion 230 and the second constraint portion 120, one of the first constraint portion 230 and the second constraint portion 120 may be set as a convex constraint portion, and the other of the first constraint portion 230 and the second constraint portion 120 may be set as a concave constraint portion, and the convex constraint portion is inserted into the concave constraint portion.

[0173] For example, the first constraint portion 230 is set as a convex constraint portion, and the second constraint portion 120 is set as a concave constraint portion; or, the first constraint portion 230 is set as a concave constraint portion, and the second constraint portion 120 is set as a convex constraint portion. The first constraint portion 230 cooperates with the second constraint portion 120 to achieve at least part of the effects of the limiting portion 220 and the positioning portion 111. For details, reference may be made to the above, and the embodiments of the present application will not be elaborated herein.

[0174] Exemplarily, there is a third gap 600 between the first constraint portion 230 and the second constraint portion 120, and the width of the third gap 600 is greater than the width of the first gap 300 and the width of the second gap 400, so as to reduce the inclination of the lens 200 in the first direction and reduce the eccentricity of the lens 200 in the plane parallel to the second direction through the mutual cooperation of the first constraint portion 230 and the second constraint portion 120, so that the installation of the lens 200 is more stable.

[0175] Moreover, during the process of installing the lens 200, the first constraint portion 230 cooperates with the second constraint portion 120 to be able to initially limit and guide the lens 200, making the installation process of the lens 200 more convenient.

[0176] Refer to Figure 18 and Figure 19 wherein, in Figure 18In the lens assembly, the lens 200 includes a main body 210, a limiting portion 220, and a first constraining portion 120. The limiting portion 220 is provided as a convex limiting portion 220, and the first constraining portion 230 is provided as a convex constraining portion; the limiting portion 220 and the first constraining portion 120 are oppositely arranged, the width of the third gap 600 is greater than the width of the first gap 300 and the width of the second gap 400. The limiting portion 220 is provided as a double-arc limiting portion 220, and the first constraining portion 120 is provided as a double-arc constraining portion, reducing the tilt of the lens 200 in the first direction and reducing the eccentricity of the lens 200 in a plane parallel to the second direction.

[0177] In Figure 19 In the lens assembly, the lens 200 includes a main body 210, a limiting portion 220, and a first constraining portion 120. The limiting portion 220 is provided as a concave limiting portion 220, and the first constraining portion 230 is provided as a concave constraining portion. The limiting portion 220 and the first constraining portion 120 are oppositely arranged, the width of the third gap 600 is greater than the width of the first gap 300 and the width of the second gap 400. The limiting portion 220 is provided as a rectangular limiting portion 220, and the first constraining portion 120 is provided as a double-arc constraining portion, so as to reduce the tilt of the lens 200 in the first direction and reduce the eccentricity of the lens 200 in a plane parallel to the second direction by the tangential cooperation of the first constraining portion 230 and the second constraining portion 120.

[0178] In summary, by providing the lens 200 to include the main body 210 and the limiting portion 220, and forming the mounting portion 110 and the positioning portion 111 on the inner surface of the lens, when the main body 210 is mounted in the mounting portion 110, a first gap 300 is formed between the main body 210 and the side wall of the mounting portion 110, and a second gap 400 is formed between the limiting portion 220 and the corresponding positioning portion 111, so that the lens 200 can be relatively fixed in the mounting portion 110 by the cooperation of the limiting portion 220 and the positioning portion 111;

[0179] When the environmental temperature of the lens assembly rises, the main body 210 and the limiting portion 220 expand due to heat. The first gap 300 between the main body 210 and the side wall of the mounting portion 110 decreases, and the second gap 400 between the limiting portion 220 and the corresponding positioning portion 111 decreases. Since the width of the second gap 400 is smaller than the width of the first gap 300, the limiting portion 220 first tightly abuts against the positioning portion 111, thereby reducing the possibility of the main body 210 of the lens 200 coming into contact with the side wall of the mounting portion 110 and reducing the possibility of the main body 210 of the lens 200 being extruded and deformed, improving the imaging clarity of the lens 200.

[0180] Referring to Figure 18 , the embodiment of the present application further provides a preparation method of a lens assembly, including:

[0181] S101. Provide a lens barrel and a lens. The lens barrel extends along a first direction, and an installation part is formed on the inner surface of the lens barrel. The lens includes a main body;

[0182] In some possible implementation manners, the lens barrel 100 may extend along the first direction, and an installation part 110 is formed on the inner surface of the lens barrel 100. The installation part 110 is used to install the lens 200, and the shape of the installation part 110 can be adjusted according to the shape of the lens. The embodiments of the present application do not limit this.

[0183] Exemplarily, the main body 210 may be set as a planar main body 210, or the main body 210 may also be set as a convex lens main body 210, and the end of the main body 210 facing the lens barrel 100 bulges, that is, the convex surface of the main body 210 may face away from the functional element 500 inside the lens barrel 100, so that the functional element 500 located inside the lens barrel 100 can obtain a larger imaging view through the convex lens main body 210.

[0184] The material of the lens 200 may be set as plastic, glass, etc. In a plane perpendicular to the first direction, the main body 210 may be set as a square main body 210 or a circular main body 210, or the shape of the main body 210 may also be adjusted according to the size and installation position of the lens barrel 100.

[0185] Exemplarily, the main body 210 may include at least one arc part 211 and at least one plane part 212 connected to each other. For example, the main body 210 may include two arc parts 211 and two plane parts 212. Among them, the two arc parts 211 and the two plane parts 212 may be alternately arranged in sequence. Each arc part 211 is connected to two plane parts 212, each plane part 212 is connected to two arc parts 211, the two plane parts 212 are arranged parallel and opposite to each other, the two arc parts 211 are arranged opposite to each other, and the two arc parts 211 both bulge in directions away from each other.

[0186] The central axes of the two arc parts 211 may be arranged to coincide. The central axis of the arc part 211 may extend along the first direction, and the distance between the central axis of the arc part 211 and the central axis of the lens barrel 100 may be less than or equal to 0.4 millimeters to improve the coaxiality between the main body 210 and the lens barrel 100.

[0187] S102. Form at least one positioning part on the installation part. The positioning part extends along a second direction, and the second direction is perpendicular to the first direction; form at least one limiting part on the main body;

[0188] In some possible embodiments, in the cooperating positioning portion 111 and limiting portion 220, the positioning portion 111 may be set as a concave positioning portion 111, and the limiting portion 220 may be correspondingly set as a convex limiting portion 220, so that the convex limiting portion 220 can be correspondingly inserted into the concave positioning portion 111, and the main body 210 can be relatively fixed in the mounting portion 110 of the lens barrel 100 through the concave positioning portion 111 and the convex limiting portion 220;

[0189] Alternatively, in the cooperating positioning portion 111 and limiting portion 220, the positioning portion 111 may be set as a convex positioning portion 111, and the limiting portion 220 may be correspondingly set as a concave limiting portion 220, so that the convex positioning portion 111 can be correspondingly inserted into the concave limiting portion 220, and the main body 210 can be relatively fixed in the mounting portion 110 of the lens barrel 100 through the convex positioning portion 111 and the concave limiting portion 220, thereby realizing the fixation of the lens 200 and the lens barrel 100.

[0190] It is easy to understand that when the limiting portion 220 is set as a convex limiting portion 220 and the positioning portion 111 is set as a concave positioning portion 111, a convex limiting portion 220 can be formed on the main body 210 by means of welding or the like. Alternatively, the convex limiting portion 220 can also be integrally formed on the main body 210;

[0191] Part of the lens barrel 100 can be removed by milling or the like to form a concave positioning portion 111. Alternatively, the concave positioning portion 111 can also be integrally formed on the lens barrel 100, and the concave positioning portion 111 communicates with the mounting portion 110.

[0192] Alternatively, when the limiting portion 220 is set as a concave limiting portion 220 and the positioning portion 111 is set as a convex positioning portion 111, part of the main body 210 can be removed by milling or the like to form a concave limiting portion 220. Alternatively, the concave limiting portion 220 can also be integrally formed on the main body 210.

[0193] A convex positioning portion 111 can be formed on the lens barrel 100 by means of welding or the like. Alternatively, the convex positioning portion 111 can also be integrally formed on the lens barrel 100;

[0194] S103. Install the main body in the mounting portion, and each limiting portion is connected to a positioning portion.

[0195] In some possible embodiments, when installing the lens 200 on the lens barrel 100, the main body 210 of the lens 200 can be placed in the mounting portion 110, so that a plurality of limiting portions 220 can be correspondingly arranged on the corresponding positioning portions 111, thereby playing a certain positioning role in the installation process of the lens 200 through the plurality of limiting portions 220 and the plurality of positioning portions 111, and making the installation process of the lens 200 more convenient.

[0196] Exemplarily, an adhesive layer may be first coated on the groove bottom surface and the side wall of the mounting portion 110, and then the main body 210 of the lens 200 is placed in the mounting portion 110, so that the main body 210 of the lens 200 can be in contact with the adhesive layer, thereby realizing the fixation of the main body 210 of the lens 200 to the lens barrel 100.

[0197] The embodiment of the present application further provides an electronic device, including the lens assembly described in any of the above embodiments. Since the electronic device includes the lens assembly described in any of the above embodiments, therefore, the electronic device has the advantages of the lens assembly described in any of the above embodiments. For specific details, reference may be made to the relevant descriptions above, and details will not be repeated here.

[0198] In the description of the present invention, it should be understood that the terms "including" and "having" and any variations thereof used herein are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0199] Unless otherwise clearly defined and limited, the terms "mounting", "connecting", "connecting", "fixing", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be directly connected, or indirectly connected through an intermediate medium, which may be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features.

[0200] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or equivalently replace some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lens assembly, characterized in that, it includes a lens barrel and lenses; the lens barrel extends along a first direction, an inner surface of the lens barrel is formed with a mounting portion and at least one positioning portion, the at least one positioning portion is disposed on the mounting portion, the positioning portion extends along a second direction, and the second direction is perpendicular to the first direction; the lenses include a main body connected to at least one limiting portion, the main body is disposed within the mounting portion, and each of the limiting portions is connected to one of the positioning portions.

2. The lens assembly according to claim 1, characterized in that, a first gap is formed between the main body and a side wall of the mounting portion; a second gap is formed between the limiting portion and the corresponding positioning portion.

3. The lens assembly according to claim 2, characterized in that, a width of the first gap is greater than or equal to 0.002 millimeters, and / or, a width of the second gap is less than or equal to 0.2 millimeters.

4. The lens assembly according to claim 2, characterized in that, a width X of the first gap satisfies the following formula: X = (CTE1 - CTE2) × D1 × ΔT ≥ 0.002mm; wherein, CTE1 is a thermal expansion coefficient of the lens, CTE2 is a thermal expansion coefficient of the lens barrel, D1 is an outer diameter of the lens, and ΔT is a temperature difference between a use temperature and an initial temperature of the lens assembly.

5. The lens assembly according to claim 2, characterized in that, a positional tolerance between the mounting portion and the positioning portion is greater than or equal to -0.2 millimeters and less than or equal to 0.2 millimeters; and / or, a positional tolerance between the limiting portion and the main body is greater than or equal to -0.2 millimeters and less than or equal to 0.2 millimeters.

6. The lens assembly according to claim 2, characterized in that, at least part of the limiting portions are arranged as rectangular limiting portions, and the rectangular limiting portion has two first abutting surfaces and one second abutting surface; the two first abutting surfaces are arranged in parallel and opposite to each other, the first abutting surface extends along the second direction, one side of the two first abutting surfaces facing away from an outer surface of the main body is connected by the second abutting surface, and the second abutting surface is perpendicular to the second direction; a gap between the first abutting surface and the positioning portion forms the second gap, and a width of the second gap is less than or equal to a width of a gap between the second abutting surface and the positioning portion.

7. The lens assembly according to claim 6, characterized in that, each of the limiting portions is arranged as a rectangular limiting portion, and a number of the rectangular limiting portions is greater than or equal to three.

8. The lens assembly according to claim 2, characterized in that, at least part of the limiting portions are arranged as trapezoidal limiting portions, and the trapezoidal limiting portion has two first abutting surfaces and one second abutting surface; the two first abutting surfaces are symmetrically arranged with respect to the second direction, the two first abutting surfaces approach each other along a direction away from an outer surface of the main body, one side of the two first abutting surfaces facing away from an outer surface of the main body is connected by the second abutting surface, and the second abutting surface is perpendicular to the second direction; A gap between the first abutting surface and the positioning portion forms the second gap, and a width of the second gap is less than or equal to a width of a gap between the second abutting surface and the positioning portion.

9. A method for manufacturing a lens assembly, characterized in that it includes: providing a lens barrel and a lens, the lens barrel extending in a first direction, an inner surface of the lens barrel being formed with a mounting portion, and the lens including a main body; forming at least one positioning portion in the mounting portion and forming at least one limiting portion in the main body; the positioning portion extending in a second direction, the second direction being perpendicular to the first direction; mounting the main body in the mounting portion, each of the limiting portions being connected to one of the positioning portions.

10. An electronic device, characterized in that it includes the lens assembly according to any one of claims 1-8.

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