Optical lens

Abstract

The utility model provides an optical lens. The optical lens comprises a lens cone and a lens group arranged in the lens cone, the lens group sequentially comprises a first lens and a second lens from a first side to a second side, the first lens is composed of a first optical effective part and a first mechanism part from the center to the edge, and the first mechanism part is arranged in the circumferential direction of the first optical effective part; the second lens is composed of a second optical effective part and a second mechanism part from the center to the edge, the second mechanism part is arranged in the circumferential direction of the second optical effective part, and the first mechanism part partially abuts against the second mechanism part; wherein the edge position of the second side surface of the first optical effective part is provided with a first annular inclined surface, the edge position of the first side surface of the second optical effective part is provided with a second annular inclined surface, and the first annular inclined surface and the second annular inclined surface are oppositely arranged. According to the utility model, the problem that the abutting stress is concentrated due to the limitation of the lens accommodating space of the optical lens in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical equipment, in particular to an optical lens. Background Art

[0002] With the continuous evolution of optical lens technology, the combination of lenses in optical lenses has undergone a transformation from a single material to a composite material. Especially in ultra-wide-angle fisheye lenses or obstacle avoidance lenses, the application of glass-plastic hybrid lens groups has become increasingly common.

[0003] However, due to the essential differences in processing and molding of glass lenses and plastic lenses, when they are in adjacent positions in a lens group and the edges of their optically effective surfaces are too close or in contact, the accommodating space for the second lens is relatively limited, which can easily lead to stress concentration problems in abutment fit.

[0004] That is to say, the optical lens in the prior art has the problem of abutment stress concentration caused by the limited space for accommodating the lens. Utility Model Content

[0005] The main purpose of the utility model is to provide an optical lens to solve the problem of abutment stress concentration caused by the limited lens accommodation space in the optical lens in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model provides an optical lens, comprising a lens barrel and a lens group arranged in the lens barrel, the lens group comprising a first lens and a second lens in sequence from a first side to a second side, the first lens comprising a first optically effective portion and a first mechanism portion from the center to the edge, the first mechanism portion being arranged around the circumference of the first optically effective portion; the second lens comprising a second optically effective portion and a second mechanism portion from the center to the edge, the second mechanism portion being arranged around the circumference of the second optically effective portion, the first mechanism portion being partially abutted against the second mechanism portion; wherein a first annular bevel is provided at an edge position of the second side surface of the first optically effective portion, a second annular bevel is provided at an edge position of the first side surface of the second optically effective portion, the first annular bevel is arranged opposite to the second annular bevel.

[0007] Furthermore, the first annular bevel and the second annular bevel are spaced apart, and a vertical gap B between the first annular bevel and the second annular bevel is greater than 0 mm and less than 0.2 mm.

[0008] Further, the axial length E of the first annular bevel is greater than the axial length D of the second annular bevel.

[0009] Furthermore, an included angle F between the first annular inclined surface and the optical axis is greater than an included angle C between the second annular inclined surface and the optical axis.

[0010] Further, the included angle F between the first annular inclined surface and the optical axis satisfies: 20° < F < 40°; and / or, the included angle C between the second annular inclined surface and the optical axis satisfies: 0° < C < 20°.

[0011] Further, the axial contact length A between the outer peripheral surface of the first lens and the lens barrel is greater than 0.2 mm and less than 0.3 mm.

[0012] Further, the first lens is a glass lens and the second lens is a resin lens.

[0013] Further, the diameter of the first lens is greater than the diameter of the second lens, at least part of the surface of the second side of the first mechanism portion close to the first optically effective portion abuts against the first side surface of the second mechanism portion; and / or, at least part of the surface of the second side of the first mechanism portion away from the first optically effective portion abuts against the lens barrel.

[0014] Further, the diameter of the first annular inclined surface gradually increases from the first side to the second side, and the diameter of the second annular inclined surface gradually increases from the first side to the second side; and / or, the first side surface of the first optically effective portion is a convex surface, at least part of the second side surface of the first optically effective portion is a concave surface, at least part of the first side surface of the second optically effective portion is a convex surface, and the second side surface of the second optically effective portion is a concave surface.

[0015] Further, the lens barrel includes a first lens barrel and a second lens barrel. The first lens and the second lens are located at the end position on the first side of the first lens barrel, and at least part of the first lens protrudes from the end surface on the first side of the first lens barrel. The second lens barrel covers the end on the first side of the first lens barrel, and the inner wall surface of the second lens barrel is threadedly connected to the outer wall surface of the first lens barrel.

[0016] Applying the technical solution of the present utility model, the optical lens includes a lens barrel and a lens group disposed in the lens barrel. The lens group sequentially includes a first lens and a second lens from the first side to the second side. The first lens is composed of a first optically effective portion and a first mechanism portion from the center to the edge, and the first mechanism portion is disposed circumferentially around the first optically effective portion; the second lens is composed of a second optically effective portion and a second mechanism portion from the center to the edge, and the second mechanism portion is disposed circumferentially around the second optically effective portion, and the first mechanism portion and the second mechanism portion are partially abutted; wherein, an edge position of the second side surface of the first optically effective portion has a first annular inclined surface, an edge position of the first side surface of the second optically effective portion has a second annular inclined surface, and the first annular inclined surface and the second annular inclined surface are oppositely disposed.

[0017] By setting the first mechanism part to partially abut against the second mechanism part, the edge position of the second side surface of the first optically effective part has a first annular bevel, the edge position of the first side surface of the second optically effective part has a second annular bevel, the first annular bevel and the second annular bevel are arranged opposite to each other, and the surface shape of the edge position of the first optically effective part facing the second lens is reasonably planned. When the first mechanism part of the first lens abuts against the second mechanism part of the second lens, the first annular bevel and the second annular bevel can stably correspond to each other. Through the cooperation of the two, the situation of abutment stress concentration caused by the limitation of the accommodation space of the second lens is avoided, which is conducive to the dispersion of stress, thereby avoiding the problem of poor surface shape caused by stress concentration. At the same time, such a setting also improves the contact state between the first lens and the second lens. In addition, by reasonably setting the first annular bevel and the second annular bevel, the generation of the second lens weld line can be effectively avoided, thereby reducing the possibility of stray light generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0019] Figure 1 A schematic diagram of the structure of an optical lens in the prior art is shown;

[0020] Figure 2 Shows Figure 1 A structural simulation diagram of the second lens in FIG.

[0021] Figure 3 A schematic structural diagram of an optical lens of an optional embodiment of the utility model is shown;

[0022] Figure 4 Shows Figure 3 A partial magnified view of the optical lens in FIG.

[0023] Figure 5 Shows Figure 3 Structural simulation diagram of the second lens in FIG.

[0024] The above drawings include the following reference numerals:

[0025] 11. first lens barrel; 12. second lens barrel; 21. first lens; 211. first optically effective portion; 2111. first annular slope; 212. first mechanism portion; 22. second lens; 221. second optically effective portion; 2211. second annular slope; 222. second mechanism portion; 30. optical axis; 40. weld line. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0028] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0029] like Figure 1 and Figure 2 As shown in FIG. , the structure of the existing optical lens is described. Figure 1 In the embodiment, the optical lens comprises a lens barrel and a first lens 21' and a second lens 22' which are arranged in the lens barrel from the first side to the second side in sequence, wherein the first lens 21' is a glass lens and the second lens 22' is a resin lens. The first lens 21' is processed by cold processing, and the surface of the optically effective part is a spherical surface. According to the conventional processing method, the surface edge of the optically effective part is directly connected to the supporting position; at the same time, affected by the spherical curvature radius, the distance B between the spherical edge of the second side of the optically effective part of the first lens 21' and the non-spherical edge of the first side of the optically effective part of the second lens 22' is very small, and the size is less than 0.1mm; on the other hand, affected by the end face height of the lens barrel, it is necessary to increase the size of the vector height SAG2 of the second side surface of the first lens 21', increase the abutment fit amount A between the outer peripheral surface of the first lens 21' and the lens barrel, and increase the size of the glue dispensing space between the first lens 21' and the lens barrel.

[0030] Due to the above factors, the second lens 22' has a large axial step difference and a small structural angle C when it is designed, and a weld line 40 is easily formed at the edge of the optically effective portion. Figure 2 As shown in Figure 2 A simulation diagram of the first side surface of the second lens 22 ′ is shown. The stress is concentrated at the step position, which has a certain influence on the face shape.

[0031] In order to solve the problem of abutment stress concentration caused by limited lens accommodation space in the optical lens in the prior art, the utility model provides an optical lens.

[0032] like Figures 3 to 5As shown, the optical lens includes a lens barrel and a lens group arranged in the lens barrel, the lens group includes a first lens 21 and a second lens 22 in sequence from the first side to the second side, the first lens 21 is composed of a first optically effective part 211 and a first mechanism part 212 from the center to the edge, and the first mechanism part 212 is arranged around the circumference of the first optically effective part 211; the second lens 22 is composed of a second optically effective part 221 and a second mechanism part 222 from the center to the edge, the second mechanism part 222 is arranged around the circumference of the second optically effective part 221, and the first mechanism part 212 is partially abutted against the second mechanism part 222; wherein, the edge position of the second side surface of the first optically effective part 211 has a first annular bevel 2111, the edge position of the first side surface of the second optically effective part 221 has a second annular bevel 2211, and the first annular bevel 2111 is arranged opposite to the second annular bevel 2211.

[0033] By setting the first mechanism part 212 and the second mechanism part 222 to partially abut, the edge position of the second side surface of the first optically effective part 211 has a first annular bevel 2111, and the edge position of the first side surface of the second optically effective part 221 has a second annular bevel 2211, and the first annular bevel 2111 and the second annular bevel 2211 are arranged opposite to each other, and the surface shape of the edge position of the first optically effective part 211 facing the second lens 22 is reasonably planned. When the first mechanism part 212 of the first lens 21 abuts the second mechanism part 222 of the second lens 22, the first annular bevel 2111 and the second annular bevel 2211 can correspond stably, and the cooperation between the two can avoid the situation that the abutment stress concentration caused by the limited accommodation space of the second lens 22 is conducive to the dispersion of stress, thereby avoiding the problem of poor surface shape caused by stress concentration. At the same time, such a setting also improves the contact state between the first lens 21 and the second lens 22. In addition, by properly arranging the first annular bevel 2111 and the second annular bevel 2211 , the generation of a weld line on the second lens 22 can be effectively avoided, thereby reducing the possibility of generating stray light.

[0034] Furthermore, the optical lens of the present application mainly solves the problem of stress concentration caused by the abutment between the first lens 21 and the second lens 22, which limits the space of the second lens 22 and makes the position of the second annular slope 2211 too steep.

[0035] It should be noted that the inclined surface in the first annular inclined surface 2111 and the second annular inclined surface 2211 is defined in the present application as: a surface inclined relative to the optical axis 30 is a inclined surface. The first annular inclined surface 2111 and the second annular inclined surface 2211 are arranged opposite to each other in the present application as: the two surfaces are arranged face to face and correspond to each other. The first annular inclined surface 2111 is equivalent to a surface formed by cutting and chamfering the edge position of the first optically effective portion 211.

[0036] It should also be noted that the first side refers to Figure 3 The upper side of the Figure 3 The lower side of the Figure 3 For example, the lens set includes a first lens 21 and a second lens 22 from the upper side to the lower side, the first side can be the light incident side, and the second side can be the light emitting side. Figure 3 Although only two lenses, the first lens 21 and the second lens 22, are shown in the figure, the number of lenses in the lens group of the present application is not limited to these two lenses, and lenses other than the first lens 21 and the second lens 22 may also be included, that is, one or more lenses may be provided on the second side of the second lens 22. The main focus of the present application is on the abutment between the first lens 21 and the second lens 22, so the present application does not limit the number of lenses in the lens group.

[0037] It should also be noted that the first mechanism portion 212 is located on the outer peripheral side of the first optically effective portion 211 and is continuously arranged around the circumference of the first optically effective portion 211 to form an annular first mechanism portion 212. The first mechanism portion 212 is used to abut against the lens barrel and adjacent lenses, and the first optically effective portion 211 is used for the passage of imaging light and is not used to abut against the lens barrel and adjacent lenses. Similarly, the second mechanism portion 222 is located on the outer peripheral side of the second optically effective portion 221 and is continuously arranged around the circumference of the second optically effective portion 221 to form an annular second mechanism portion 222. The second mechanism portion 222 is used to abut against the lens barrel and adjacent lenses, and the second optically effective portion 221 is used for the passage of imaging light and is not used to abut against the lens barrel and adjacent lenses.

[0038] Specifically, the first lens 21 is a glass lens, and the second lens 22 is a resin lens. This arrangement makes the lens group of the present application a lens group that is a mixture of glass lenses and resin lenses, which is conducive to application in various types of lenses, such as ultra-wide-angle fisheye lenses, obstacle avoidance lenses, etc., ensuring versatility. And under this premise, the first annular bevel 2111 and the second annular bevel 2211 are set to improve the structure of the glass lens, thereby improving the problem of limited space for the structural arrangement of the resin lens, and effectively avoiding the problem of stress concentration of the second lens 22 abutting and the problem of the second lens 22 forming weld line.

[0039] like Figure 3As shown, the first annular bevel 2111 and the second annular bevel 2211 are arranged at intervals, and the vertical gap B between the first annular bevel 2111 and the second annular bevel 2211 is greater than 0 mm and less than 0.2 mm. B is the vertical distance between the first annular bevel 2111 and the second annular bevel 2211. Traditionally, when the first lens 21 and the second lens 22 in the glass-plastic hybrid lens are in direct contact, especially in the edge area of ​​the optically effective part of the second lens 22, local stress concentration occurs due to differences in material properties (such as thermal expansion coefficient, elastic modulus, etc.). The present application arranges the first annular bevel 2111 and the second annular bevel 2211 at intervals and plans the size of the gap between the two. On the one hand, it allows a slight movement space between the two lenses under the action of thermal expansion and contraction or stress, thereby effectively buffering and dispersing stress. On the other hand, it can also ensure that the edge positions of the optically effective parts of the first lens 21 and the second lens 22 are not in contact when they are assembled, thereby avoiding the influence of edge stress concentration on the surface shape of the second lens 22. In addition, reasonable planning of B within the range of greater than 0mm and less than 0.2mm can allow the two lenses to be fine-tuned within a certain tolerance range, improving the accuracy and flexibility of assembly. At the same time, the existence of the gap reduces the hard contact caused by processing errors or dimensional deviations, avoids deformation or damage of the lenses caused by hard contact, and thus enhances the assembly stability and durability of the lens group.

[0040] like Figure 3 and Figure 4 As shown, the axial length E of the first annular bevel 2111 is greater than the axial length D of the second annular bevel 2211. This arrangement makes the length of the first annular bevel 2111 on the optical axis 30 greater than the length of the second annular bevel 2211 on the optical axis 30, and the projection of the second annular bevel 2211 on the optical axis 30 is located within the projection range of the first annular bevel 2111 on the optical axis 30, and the projection area of ​​the second annular bevel 2211 on the optical axis 30 is smaller than the projection area of ​​the first annular bevel 2111 on the optical axis 30. This arrangement is conducive to ensuring that when the first lens 21 and the second lens 22 are assembled, an appropriate space is left between the second side edge of the first optically effective portion 211 and the first side edge of the second optically effective portion 221, and the first annular bevel 2111 provides a longer transition area in the axial direction, which helps to distribute the stress more smoothly and reduce the stress peak, thereby improving the surface shape of the second lens 22 matched therewith, and improving the overall performance and imaging quality of the lens group. At the same time, such a design helps to accurately align the first lens 21 and the second lens 22 during the assembly process, thereby enhancing the assembly accuracy. In addition, the design of E>D reduces assembly problems caused by small tolerances and improves the stability and reliability of the lens assembly under different operating conditions.

[0041] Moreover, this can also ensure that when the resin lens is injection-molded, the shorter second annular inclined surface 2211 can reduce the resistance of plastic flow, avoid the formation of weld lines, and thus improve the molding quality of the second lens 22. The axial length E of the first annular inclined surface 2111 is longer, providing more sufficient support for the second lens 22, and at the same time helping to reduce the deformation and stress of the first lens 21 during the molding process, ensuring the surface accuracy of the first optical effective part 211.

[0042] In addition, when the first optical effective part 211 and the second optical effective part 221 are actually processed, the optical effective diameter allowance will be reasonably set. Considering the influence of the processing error and dimensional deviation of the lens, the size of the optical effective aperture is guaranteed. At the same time, in order to ensure a better transitional connection between the optical effective surface and the surface of the mechanism part, a certain allowance size is usually additionally reserved at the edge position of the optical effective part. Preferably, the optical effective diameter allowance should not be less than 0.05 mm.

[0043] As Figure 3 and Figure 4 shown, the angle F between the first annular inclined surface 2111 and the optical axis 30 is greater than the angle C between the second annular inclined surface 2211 and the optical axis 30. Such a setting can effectively avoid interference caused by the contact between the first annular inclined surface 2111 and the second annular inclined surface 2211.

[0044] Specifically, the angle F between the first annular inclined surface 2111 and the optical axis 30 satisfies: 20° < F < 40°; the angle C between the second annular inclined surface 2211 and the optical axis 30 satisfies: 0° < C < 20°. By reasonably planning the ranges of the angle F and the angle C to be错开, it is further ensured that when the first lens 21 and the second lens 22 are abutted and assembled, the first annular inclined surface 2111 and the second annular inclined surface 2211 will not contact, thereby avoiding the interference between the two and ensuring the assembly stability of the first lens 21 and the second lens 22.

[0045] In summary, by setting the first annular inclined surface 2111, more design space can be provided for the second annular inclined surface 2211 of the second lens 22, increasing the angle C between the second annular inclined surface 2211 and the optical axis 30, which is beneficial to reducing the risk of weld lines in the molding of the second lens 22. Refer to Figure 5 the simulation diagram of the first side of the second lens 22 shown in

[0046] As Figure 3As shown, the axial length A of the contact between the outer circumference of the first lens 21 and the lens barrel is greater than 0.2mm and less than 0.3mm. By rationally planning the axial length of the contact between the outer circumference of the first mechanism part 212 of the first lens 21 and the lens barrel within the range of 0.2mm-0.3mm, it is helpful to effectively control the contact stress between the first lens 21 and the lens barrel. This arrangement allows the contact surface of the first lens 21 and the lens barrel to maintain the necessary fit, ensuring stable assembly, and avoids the situation where the overall size is too large due to the contact surface being too wide.

[0047] Specifically, the diameter of the first annular bevel 2111 gradually increases from the first side to the second side, and the diameter of the second annular bevel 2211 gradually increases from the first side to the second side. On the other hand, the cross-sections of the first annular bevel 2111 and the second annular bevel 2211 along the direction parallel to the optical axis 30 are straight lines, so that the first annular bevel 2111 and the second annular bevel 2211 are not spherical surfaces with curvature, and the surface shapes of the edge positions of the optically effective parts of the two lenses are planned, which is conducive to increasing the accuracy of the matching between the two.

[0048] like Figure 3 As shown, the diameter of the first lens 21 is greater than the diameter of the second lens 22, and at least part of the surface of the second side of the first mechanism part 212 close to the first optical effective part 211 abuts against the first side surface of the second mechanism part 222; at least part of the surface of the second side of the first mechanism part 212 away from the first optical effective part 211 abuts against the lens barrel. In other words, the part of the second side surface of the first mechanism part 212 close to the optical axis 30 abuts against the second mechanism part 222, and the part of the second side surface of the first mechanism part 212 away from the optical axis 30 abuts against the lens barrel, and the second side surface of the first mechanism part 212 at this location is a plane, which is conducive to ensuring the assembly stability of the first lens 21, the lens barrel and the second lens 22.

[0049] In the specific embodiments of the present application, Figure 3 As shown, the first side surface of the first optically effective portion 211 is a convex surface, and at least a portion of the second side surface of the first optically effective portion 211 is a concave surface. In other words, the second side surface of the first optically effective portion 211 is a concave surface except for the surface of the first annular bevel 2111. At least a portion of the first side surface of the second optically effective portion 221 is a convex surface, and the second side surface of the second optically effective portion 221 is a concave surface. In other words, the first side surface of the second optically effective portion 221 is a convex surface except for the surface of the second annular bevel 2211. Reasonable planning of the surface shapes of the two lenses is conducive to a smooth transition of light, and is also conducive to ensuring the assembly accuracy and assembly stability of the two lenses. Of course, in other embodiments of the present application, the surface shapes of the optically effective portions of the two lenses can be adjusted according to actual needs, and are not limited to Figure 3 The situation shown in .

[0050] like Figure 3 As shown, the lens barrel includes a first lens barrel 11 and a second lens barrel 12, and the axial length of the first lens barrel 11 is greater than the axial length of the second lens barrel 12. The first lens 21 and the second lens 22 are located at the end positions of the first side of the first lens barrel 11, and the second lens 22 is located in the first lens barrel 11, the first lens barrel 11 is supported by the end of the first lens barrel 11, at least part of the first lens 21 is protruding from the end surface of the first side of the first lens barrel 11, and the second lens barrel 12 is covered at the end of the first side of the first lens barrel 11, and the inner wall surface of the second lens barrel 12 is threadedly connected with the outer wall surface of the first lens barrel 11. During actual assembly, the lens group can be first assembled at the corresponding position in the first lens barrel 11. At this time, the first lens 21 and the second lens 22 are assembled in place, and then the first lens 21 and the first lens barrel 11 are firmly assembled by dispensing glue between the outer peripheral surface of the first lens 21 and the first side end surface of the first lens barrel 11. At the same time, the remaining lenses are stably packaged in the first lens barrel 11, and then the second lens barrel 12 is screwed into the first lens barrel 11 from the first side of the first lens 21, thereby realizing the threaded connection between the first lens barrel 11 and the second lens barrel 12.

[0051] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0052] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0053] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0054] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An optical lens, comprising a lens barrel and a lens group disposed in the lens barrel. The lens group sequentially includes a first lens (21) and a second lens (22) from a first side to a second side. The first lens (21) is composed of a first optical effective portion (211) and a first mechanism portion (212) from a center to an edge. The first mechanism portion (212) is circumferentially disposed around the first optical effective portion (211). The second lens (22) is composed of a second optical effective portion (221) and a second mechanism portion (222) from a center to an edge. The second mechanism portion (222) is circumferentially disposed around the second optical effective portion (221). The first mechanism portion (212) is partially in contact with the second mechanism portion (222). An edge position of a first side surface of the second optical effective portion (221) has a second annular inclined surface (2211), and it is characterized in that, an edge position of a second side surface of the first optical effective portion (211) has a first annular inclined surface (2111), and the first annular inclined surface (2111) is disposed opposite to the second annular inclined surface (2211); an angle F between the first annular inclined surface (2111) and an optical axis (30) is greater than an angle C between the second annular inclined surface (2211) and the optical axis (30).

2. The optical lens according to claim 1, characterized in that: The first annular inclined surface (2111) and the second annular inclined surface (2211) are spaced apart, and a perpendicular gap B between the first annular inclined surface (2111) and the second annular inclined surface (2211) is greater than 0 mm and less than 0.2 mm.

3. The optical lens according to claim 1, characterized in that: An axial length E of the first annular inclined surface (2111) is greater than an axial length D of the second annular inclined surface (2211).

4. The optical lens according to claim 1, wherein, the angle F between the first annular inclined surface (2111) and the optical axis (30) satisfies: 20° < F < 40°; and / or, the angle C between the second annular inclined surface (2211) and the optical axis (30) satisfies: 0° < C < 20°.

5. The optical lens according to claim 1, characterized in that: An axial contact length A between an outer peripheral surface of the first lens (21) and the lens barrel is greater than 0.2 mm and less than 0.3 mm.

6. The optical lens according to any one of claims 1 to 5, characterized in that: The first lens (21) is a glass lens, and the second lens (22) is a resin lens.

7. The optical lens according to any one of claims 1 to 5, characterized in that: A diameter of the first lens (21) is greater than a diameter of the second lens (22). At least a partial surface of a second side of the first mechanism portion (212) close to the first optical effective portion (211) is in contact with a first side surface of the second mechanism portion (222); and / or, at least a partial surface of a second side of the first mechanism portion (212) away from the first optical effective portion (211) is in contact with the lens barrel.

8. The optical lens according to any one of claims 1 to 5, wherein, a diameter of the first annular inclined surface (2111) gradually increases from a first side to a second side, and a diameter of the second annular inclined surface (2211) gradually increases from a first side to a second side; and / or, The first side surface of the first optically effective portion (211) is a convex surface, at least a portion of the second side surface of the first optically effective portion (211) is a concave surface, at least a portion of the first side surface of the second optically effective portion (221) is a convex surface, and the second side surface of the second optically effective portion (221) is a concave surface.

9. The optical lens according to any one of claims 1 to 5, characterized in that: The lens barrel comprises a first lens barrel (11) and a second lens barrel (12); the first lens (21) and the second lens (22) are located at end positions of a first side of the first lens barrel (11); at least a portion of the first lens (21) is protruding from an end surface of the first side of the first lens barrel (11); the second lens barrel (12) is covered at the end of the first side of the first lens barrel (11); and an inner wall surface of the second lens barrel (12) is threadedly connected to an outer wall surface of the first lens barrel (11).

Images