Optical lens

Abstract

The utility model provides an optical lens, a near image surface or a far image surface of a structure part of the optical lens is provided with an identification part, the identification part comprises a bearing ring surface, a sinking ring groove and at least one identification boss, the sinking ring groove is arranged at one side of the bearing ring surface far away from a central axis of the optical lens, and the identification boss is arranged on the sinking ring groove. The optical lens solves the problem that the near image surface or the far image surface of the optical lens in the prior art is difficult to recognize.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical element technical field, specifically, relate to an optical lens. BACKGROUND

[0002] With the development of optical application, optical lens is more and more widely used in consumer electronics, medical instruments, industrial production, automobile and monitoring etc. Optical lens generally has plastic optical lens also has glass optical lens, and glass optical lens has higher optical clarity and less optical distortion compared with plastic optical lens, and glass optical lens also performs more stably under high temperature environment and the erosion of some chemicals. At the same time, glass optical lens is formed by mould pressing, compared with cold processing mode, the production efficiency is greatly improved. However, when the positive and negative aspheric curvature is approximate, it is difficult to distinguish the near image surface or far image surface only by the characteristics of aspheric surface under the human eye and image recognition device, which is not conducive to the assembly of optical lens.

[0003] That is, the prior art optical lens has the problem that the near image surface or far image surface is difficult to identify. CONTENT OF THE UTILITY MODEL

[0004] The main purpose of the utility model is to provide an optical lens to solve the problem that the near image surface or far image surface of the prior art optical lens is difficult to identify.

[0005] In order to achieve the above purpose, the utility model provides an optical lens, the near image surface or far image surface of the structure part of optical lens is provided with an identification part, the identification part includes a bearing ring surface, a sunken ring groove and at least one identification boss, the sunken ring groove is located on the side of the bearing ring surface away from the central axis of the optical lens, and the identification boss is arranged on the sunken ring groove.

[0006] Further, the minimum diameter A of the identification boss satisfies: 0.10mm≤A≤0.20mm.

[0007] Further, the shortest distance B of the identification boss to the bearing ring surface in the direction of the central axis of the optical lens satisfies: 0mm≤B≤0.01mm.

[0008] Further, the shortest distance C of the identification boss to the bearing ring surface in the radial direction of the optical lens satisfies: 0.020mm≤C≤0.052mm.

[0009] Further, the shortest distance D of the groove bottom surface of the sunken ring groove to the bearing ring surface in the direction of the central axis of the optical lens satisfies: 0.01mm≤D≤0.02mm.

[0010] Further, the at least one identification boss comprises a first boss and a second boss which are arranged at intervals, and the included angle E of the first boss and the second boss satisfies 20°≤E≤180°, with the center of the optical lens as the vertex and along the circumference of the optical lens.

[0011] Further, the at least one identification boss further comprises a third boss, the third boss is located on the side of the second boss away from the first boss, and the included angle F of the second boss and the third boss satisfies 90°≤F≤180°.

[0012] Further, the maximum diameter of the identification boss is greater than the minimum width of the sunken ring groove, the sunken ring groove has at least one accommodation groove extending to the central axis of the optical lens, and the identification boss is arranged in the accommodation groove.

[0013] Further, the groove wall surface of the accommodation groove is a circular arc surface curved away from the center of the optical lens, and the groove wall surface of the accommodation groove extends to the side of the abutting ring surface close to the central axis of the optical lens.

[0014] Further, the minimum width of the sunken ring groove is less than the maximum width of the abutting ring surface.

[0015] The technical scheme of the present application is applied to the optical lens, the identification part is arranged on the near image surface or the far image surface of the structural part of the optical lens, the identification part comprises an abutting ring surface, a sunken ring groove and at least one identification boss, the sunken ring groove is located on the side of the abutting ring surface away from the central axis of the optical lens, and the identification boss is arranged on the sunken ring groove.

[0016] The optical lens of the present application is arranged on the near image surface or the far image surface of the structural part, which avoids the negative interference of the identification part on the effective diameter part of the optical lens to affect imaging. The sunken ring groove and the identification boss are arranged on the abutting ring surface of the structural part of the optical lens, which provides a structure for clearly distinguishing the near image surface or the far image surface of the optical lens, and facilitates assembly and quality control. The sunken ring groove is located on the side of the abutting ring surface away from the central axis of the optical lens, which does not interfere with the abutting stability of the optical lens and the front and rear parts, and provides space for the arrangement of the identification boss, while the identification boss protrudes from the sunken ring groove, which ensures that the identification boss presents a prominent shape on the structural part of the optical lens, and does not excessively increase the thickness of the structural part of the optical lens. Not only the identification of the near image surface or the far image surface of the optical lens is solved, but also the interference of the identification part on the optical performance and assembly stability of the optical lens is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings accompanying the specification of the present application form a part of the present application and serve to provide a further understanding of the present application, the illustrative embodiments of the present application and the explanations thereof serve to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 Fig. 1 shows a schematic view of one angle of an optical lens according to an embodiment of the present application;

[0019] Figure 2 Fig. 2 shows an enlarged schematic view of part of the structure of the optical lens in Fig. 1; Figure 1

[0020] Figure 3 Fig. 3 shows a schematic view of one angle of an optical lens according to an embodiment of the present application;

[0021] Figure 4 Fig. 4 shows an enlarged schematic view of part of the structure of the optical lens in Fig. 3; Figure 3

[0022] Figure 5 Fig. 5 shows a schematic view of one angle of an optical lens according to an embodiment of the present application;

[0023] Figure 6 Fig. 6 shows an enlarged schematic view of part of the structure of the optical lens in Fig. 5; Figure 5

[0024] Fig. 7 shows a schematic view of one angle of an optical lens according to an embodiment of the present application; Figure 7

[0025] Fig. 8 shows an enlarged schematic view of part of the structure of the optical lens in Fig. 7. Figure 8 Figure 7 In the drawings, the following reference signs are used:

[0026] 10, abutting annular surface; 20, sunken annular groove; 21, accommodation groove; 30, identification boss; 31, first boss; 32, second boss; 33, third boss.

[0027] DETAILED DESCRIPTION

[0028] It should be noted that the embodiments and features in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as commonly understood by those skilled in the art to which the present application belongs.

[0030] ​​​​In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0031] To address the problem of difficulty in identifying the near or far image plane of optical lenses in existing technologies, this invention provides an optical lens.

[0032] like Figures 1 to 8 As shown, an identification part is provided on the near image surface or far image surface of the optical lens structure. The identification part includes a supporting ring surface 10, a recessed ring groove 20 and at least one identification boss 30. The recessed ring groove 20 is located on the side of the supporting ring surface 10 away from the central axis of the optical lens, and the identification boss 30 is provided on the recessed ring groove 20.

[0033] The optical lens of this application has an identification part provided on the near or far image plane of its structural part, avoiding negative interference from the identification part on the effective diameter of the optical lens and affecting imaging. By providing a recessed annular groove 20 and an identification protrusion 30 on the bearing annular surface 10 of the optical lens structural part, a structure that clearly distinguishes the near or far image plane of the optical lens is provided, facilitating assembly and quality control. The recessed annular groove 20 is located on the side of the bearing annular surface 10 away from the central axis of the optical lens, so it does not interfere with the bearing stability of the optical lens and the preceding and following components, while providing space for the identification protrusion 30. The identification protrusion 30 protrudes from the recessed annular groove 20, ensuring that the identification protrusion 30 presents a significantly protruding shape in the structural part of the optical lens, without excessively increasing the thickness of the optical lens structural part. This not only solves the problem of near or far image plane identification of the optical lens, but also avoids the identification part interfering with the optical performance and assembly stability of the optical lens.

[0034] It should be noted that optical lenses can be divided into an effective diameter portion and a structural portion in the radial direction. The effective diameter portion is used for light to pass through and form an image, while the structural portion refers to the portion that is used to support the aperture or lens barrel and is not used for image formation.

[0035] like Figures 1 to 8As shown, the minimum diameter A of the identification boss 30 satisfies: 0.10mm≤A≤0.20mm. By limiting the minimum diameter A of the identification boss 30 within a reasonable range, the visibility of the identification boss 30 under the human eye or imaging device is ensured, so that the near or far image surface of the optical lens can be quickly distinguished, avoiding the influence of the excessively large minimum diameter A on the structural stability of the bearing ring surface 10 and the sunken ring groove 20, further avoiding the interference with the effective diameter part of the optical lens, and also avoiding the problem of the identification boss 30 being difficult to identify due to the excessively small minimum diameter A, greatly improving the efficiency in the production, assembly and quality control processes.

[0036] As shown, the minimum diameter A of the identification boss 30 satisfies: 0.10mm≤A≤0.20mm. By limiting the minimum diameter A of the identification boss 30 within a reasonable range, the visibility of the identification boss 30 under the human eye or imaging device is ensured, so that the near or far image surface of the optical lens can be quickly distinguished, avoiding the influence of the excessively large minimum diameter A on the structural stability of the bearing ring surface 10 and the sunken ring groove 20, further avoiding the interference with the effective diameter part of the optical lens, and also avoiding the problem of the identification boss 30 being difficult to identify due to the excessively small minimum diameter A, greatly improving the efficiency in the production, assembly and quality control processes. Figures 1 to 8 As shown, the minimum diameter A of the identification boss 30 satisfies: 0.10mm≤A≤0.20mm. By limiting the minimum diameter A of the identification boss 30 within a reasonable range, the visibility of the identification boss 30 under the human eye or imaging device is ensured, so that the near or far image surface of the optical lens can be quickly distinguished, avoiding the influence of the excessively large minimum diameter A on the structural stability of the bearing ring surface 10 and the sunken ring groove 20, further avoiding the interference with the effective diameter part of the optical lens, and also avoiding the problem of the identification boss 30 being difficult to identify due to the excessively small minimum diameter A, greatly improving the efficiency in the production, assembly and quality control processes.

[0037] As shown, the minimum diameter A of the identification boss 30 satisfies: 0.10mm≤A≤0.20mm. By limiting the minimum diameter A of the identification boss 30 within a reasonable range, the visibility of the identification boss 30 under the human eye or imaging device is ensured, so that the near or far image surface of the optical lens can be quickly distinguished, avoiding the influence of the excessively large minimum diameter A on the structural stability of the bearing ring surface 10 and the sunken ring groove 20, further avoiding the interference with the effective diameter part of the optical lens, and also avoiding the problem of the identification boss 30 being difficult to identify due to the excessively small minimum diameter A, greatly improving the efficiency in the production, assembly and quality control processes. Figures 1 to 8 As shown, the minimum diameter A of the identification boss 30 satisfies: 0.10mm≤A≤0.20mm. By limiting the minimum diameter A of the identification boss 30 within a reasonable range, the visibility of the identification boss 30 under the human eye or imaging device is ensured, so that the near or far image surface of the optical lens can be quickly distinguished, avoiding the influence of the excessively large minimum diameter A on the structural stability of the bearing ring surface 10 and the sunken ring groove 20, further avoiding the interference with the effective diameter part of the optical lens, and also avoiding the problem of the identification boss 30 being difficult to identify due to the excessively small minimum diameter A, greatly improving the efficiency in the production, assembly and quality control processes.

[0038] As shown, the minimum diameter A of the identification boss 30 satisfies: 0.10mm≤A≤0.20mm. By limiting the minimum diameter A of the identification boss 30 within a reasonable range, the visibility of the identification boss 30 under the human eye or imaging device is ensured, so that the near or far image surface of the optical lens can be quickly distinguished, avoiding the influence of the excessively large minimum diameter A on the structural stability of the bearing ring surface 10 and the sunken ring groove 20, further avoiding the interference with the effective diameter part of the optical lens, and also avoiding the problem of the identification boss 30 being difficult to identify due to the excessively small minimum diameter A, greatly improving the efficiency in the production, assembly and quality control processes. Figures 1 to 8 As shown, the minimum diameter A of the identification boss 30 satisfies: 0.10mm≤A≤0.20mm. By limiting the minimum diameter A of the identification boss 30 within a reasonable range, the visibility of the identification boss 30 under the human eye or imaging device is ensured, so that the near or far image surface of the optical lens can be quickly distinguished, avoiding the influence of the excessively large minimum diameter A on the structural stability of the bearing ring surface 10 and the sunken ring groove 20, further avoiding the interference with the effective diameter part of the optical lens, and also avoiding the problem of the identification boss 30 being difficult to identify due to the excessively small minimum diameter A, greatly improving the efficiency in the production, assembly and quality control processes.

[0039] Optionally, as shown in Figure 7 and Figure 8 , the at least one identification boss 30 includes a first boss 31 and a second boss 32 arranged at intervals, with the center of the optical lens as the vertex, and the included angle E of the first boss 31 and the second boss 32 along the circumference of the optical lens satisfies: 20°≤E≤180°. The identification boss 30 can include a first boss 31 and a second boss 32 arranged at intervals, and the included angle of the first boss 31 and the second boss 32 along the circumference is limited to between 20°-180°, which ensures that the circumferential distribution of the identification boss 30 on the structural part of the optical lens is neither too dense to cause processing difficulties and reduce identification clarity, nor too sparse to make the identification feature not obvious, thereby forming a distribution pattern that is easy to identify and takes into account the processing and structural stability. In addition, the appropriate included angle E ensures a reasonable spatial distribution of the identification boss 30 on the structural part of the optical lens, enhancing the stability of the structural part of the optical lens.

[0040] As shown in Figure 7 and Figure 8 , the at least one identification boss 30 further includes a third boss 33, which is located on the side of the second boss 32 away from the first boss 31, and the included angle F of the second boss 32 and the third boss 33 satisfies: 90°≤F≤180°. That is, the identification boss 30 can include a first boss 31, a second boss 32 and a third boss 33 arranged sequentially at intervals, and the distribution between the second boss 32 and the third boss 33 along the circumference of the optical lens is separated by at least a right angle or a larger angle, forming a significant interval, which not only optimizes the layout of the identification boss 30 on the structural part of the optical lens, but also reduces the mutual shielding of the second boss 32 and the third boss 33.

[0041] The following gives several implementation schemes of the optical lens of the present application in combination with specific structural arrangements.

[0042] Example One

[0043] As shown in Figure 3 and Figure 4 , described is the optical lens of the first embodiment of the present application. In this embodiment, the identification part is provided on the far-side surface of the structural part of the optical lens, and the identification part includes the abutting torus 10, the sunken annular groove 20 and the four identification bosses 30. The specific dimensions of the identification part of the optical lens of Example One are shown in Table 1.

[0044] Table 1

[0045] Example / parameters A (mm) B (mm) C (mm) D (mm) E(°) F(°) Example 1 0.10 0 0.020 0.01 90 90

[0046] As shown in Table 1, the smaller minimum diameter A ensures the fineness of the identification boss 30, which is suitable for high-precision identification systems, while reducing the impact on the strength of the structural part of the optical lens. The shortest distance B is 0 mm, which means that the identification boss 30 is flush with the bearing ring surface 10 along the central axis of the optical lens, ensuring the reliability and surface flatness of the optical lens during assembly, and avoiding affecting the optical performance. The smaller shortest distance C guarantees the feasibility of the identification boss 30, while reducing the difficulty of mold processing, and the smaller shortest distance D provides a stable carrier for the identification boss 30. The included angle E and the included angle F are both 90°, indicating that the four identification bosses 30 are distributed at right angles, forming a clear visual path, which facilitates the rapid and accurate differentiation of the near image surface and the far image surface of the optical lens.

[0047] Example Two

[0048] In the not-shown Example Two, the difference from Example One is that the identification part is arranged on the near image surface of the structural part of the optical lens.

[0049] Example Three

[0050] As shown in Figure 5 and Figure 6 , described is a three-optical lens of the present application. In this embodiment, the identification part is arranged on the far image surface of the structural part of the optical lens, and the identification part includes a bearing ring surface 10, a sunken ring groove 20, and two identification bosses 30.

[0051] As shown in Figure 5 and Figure 6 , the maximum diameter of the identification boss 30 is greater than the minimum width of the sunken ring groove 20, the sunken ring groove 20 has at least one accommodation groove 21 extending to the central axis of the optical lens, and the identification boss 30 is arranged in the accommodation groove 21. The maximum diameter A of the identification boss 30 is greater than the minimum width of the sunken ring groove 20, that is, the identification boss 30 is not completely contained in the minimum width of the sunken ring groove 20. From the edge of the identification boss 30 in the direction close to the optical axis, the width of the accommodation groove 21 increases in the radial direction, providing additional space for introducing the identification boss 30, so that the identification boss 30 can protrude from the groove bottom surface of the sunken ring groove 20 without interfering with the bearing of the optical lens assembly, forming a prominent identification feature. In addition, by designing the accommodation groove 21 in the sunken ring groove 20, the hard contact between the identification boss 30 and the structural part of the optical lens is avoided, the difficulty of mold design and processing is reduced, and the yield in the production process is improved.

[0052] As shown in Figure 5 and Figure 6As shown, the groove wall surface of the accommodation groove 21 is a circular arc surface curved away from the center of the optical lens, and the groove wall surface of the accommodation groove 21 extends to the side of the bearing ring surface 10 close to the central axis of the optical lens. The groove wall surface of the accommodation groove 21 gradually approaches the optical axis, and the width of the accommodation groove 21 increases along the radial extension, and the extension path of the groove wall surface finally forms a circular arc surface. The circular arc groove wall surface can disperse stress and reduce cracks or fractures of the structural part of the optical lens during processing or use, thereby improving the structural strength and durability of the optical lens. The extension center of the circular arc surface is away from the center of the optical lens, and a part of the groove wall surface intersects with the bearing ring surface 10, which ensures that the groove wall surface of the accommodation groove 21 contacts the bearing ring surface 10 of the optical lens, so that the identification boss 30 is more protruding, which is convenient for identification by image equipment or human eyes, and the groove wall surface of the accommodation groove 21 also helps to protect the identification boss 30 from accidental damage.

[0053] It should be noted that the minimum width of the sunken ring groove 20 is smaller than the maximum width of the bearing ring surface 10. In order to achieve stable bearing, the bearing ring surface 10 has sufficient width to ensure good contact area and stability. Limiting the minimum width of the sunken ring groove 20 to be smaller than the maximum width of the bearing ring surface 10 ensures that the width of the bearing ring surface 10 is sufficient to bear, and realizes the optimization of the partition on the structural part of the optical lens, that is, the reasonable layout of the bearing and identification functions, avoiding the mutual interference between functions.

[0054] In this embodiment, the sunken ring groove 20 has two accommodation grooves 21, and two identification bosses 30 are arranged in the accommodation grooves 21.

[0055] The specific size of the identification part of the optical lens of Example Three is shown in Table 2.

[0056] Table 2

[0057] Example / parameters A (mm) B (mm) C (mm) D (mm) E(°) F(°) Example 3 0.20 0.005 0.047 0.015 180 180

[0058] As shown in Table 2, the relatively large minimum diameter A increases the recognition degree of the identification boss 30, which is suitable for the identification of the near vision surface and the distance vision surface of the optical lens with a larger size or a longer distance. The small minimum distance B enhances the visual effect of the identification boss 30, while maintaining the bearing performance of the optical lens during assembly. The relatively large minimum distance C balances the difficulty of mold processing and the structural stability of the identification boss 30, ensuring the feasibility of processing and the reliability of the identification boss 30, and the moderate minimum distance D provides a bearing space for the identification boss 30, while maintaining the compactness of the structural part of the optical lens.

[0059] It should be noted that there are only two identification bosses 30 in the present embodiment, and therefore the included angle F and the included angle E both represent the included angle of the two identification bosses 30. The included angle E and the included angle F are both 180°, indicating that the two identification bosses 30 are almost located in opposite positions, forming the maximum angle of visual difference.

[0060] Embodiment Four

[0061] In the not-shown embodiment four, the difference from the embodiment three is that the identification part is arranged on the proximal image surface of the structural part of the optical lens.

[0062] Embodiment Five

[0063] As shown in Figure 7 and Figure 8 , described is the optical lens of the present embodiment five. In the present embodiment, the identification part is arranged on the distal image surface of the structural part of the optical lens, and the identification part comprises the abutting torus 10, the sunken annular groove 20 and six identification bosses 30.

[0064] As shown in Figure 7 and Figure 8 , the sunken annular groove 20 has six accommodation grooves 21, and the six identification bosses 30 are respectively arranged in the six accommodation grooves 21. Among the six identification bosses 30, at least comprises the first boss 31, the second boss 32 and the third boss 33 arranged in sequence. The specific size of the identification part of the optical lens of the embodiment five is shown in Table 3.

[0065] Table 3

[0066] Example / parameters A (mm) B (mm) C (mm) D (mm) E(°) F(°) Example 3 0.15 0.01 0.052 0.02 20 140

[0067] As shown in Table 3, the appropriate minimum diameter A takes into account the recognition degree and the fineness of the identification boss 30, and is suitable for the conventional optical identification equipment. The larger shortest distance B certainly protrudes, which helps to improve the accuracy of identification while maintaining the flatness of the abutting torus 10. The larger shortest distance C increases the space between the identification boss 30 and the groove wall surface, which is conducive to the setting of the identification boss 30 and the machining precision of the mold. The farther shortest distance D enhances the structural stability of the identification boss 30. The included angle E and the included angle F are 20° and 140° respectively, indicating that the irregular layout is formed between the identification bosses 30, which optimizes the visual identification effect in the limited space and is suitable for identification in complex optical systems.

[0068] Embodiment Six

[0069] In the not-shown embodiment six, the difference from the embodiment five is that the identification part is arranged on the proximal image surface of the structural part of the optical lens.

[0070] From the above description, it can be seen that the above-mentioned embodiments of the present application achieve the following technical effects:

[0071] 1、The optical lens of the application is provided with an identification part on the near or far image surface of the structural part, avoiding the negative interference of the identification part on the effective diameter part of the optical lens. By providing the sunken ring groove 20 and the identification boss 30 on the bearing ring surface 10 of the structural part of the optical lens, a structure is provided for clearly distinguishing the near or far image surface of the optical lens, facilitating assembly and quality control.

[0072] 2、The sunken ring groove 20 is located on the side of the bearing ring surface 10 away from the central axis of the optical lens, which does not interfere with the bearing stability of the optical lens and the front and rear parts, and provides space for the identification boss 30, while the identification boss 30 protrudes from the sunken ring groove 20, ensuring that the identification boss 30 presents a prominent shape in the structural part of the optical lens, without excessively increasing the thickness of the structural part of the optical lens. Not only does it solve the identification problem of the near or far image surface of the optical lens, but it also avoids the interference of the identification part on the optical performance and assembly stability of the optical lens.

[0073] Obviously, the above-described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0074] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, work, device, component and / or combination thereof.

[0075] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the application described herein can be implemented in an order other than those illustrated or described herein.

[0076] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An optical lens, characterized in that, The optical lens comprises a structure part, and an identification part is arranged on a near vision surface or a far vision surface of the structure part, the identification part comprises a bearing annular surface (10), a sunken annular groove (20) and at least one identification boss (30), the sunken annular groove (20) is located on a side of the bearing annular surface (10) away from a central axis of the optical lens, and the identification boss (30) is arranged on the sunken annular groove (20).

2. The optical lens according to claim 1, characterized in that, A minimum diameter A of the identification boss (30) satisfies: 0.10mm≤A≤0.20mm.

3. The optical lens according to claim 1, characterized in that, A shortest distance B of the identification boss (30) to the bearing annular surface (10) in a direction of the central axis of the optical lens satisfies: 0mm≤B≤0.01mm.

4. The optical lens according to claim 1, characterized in that, A shortest distance C of the identification boss (30) to the bearing annular surface (10) in a radial direction of the optical lens satisfies: 0.020mm≤C≤0.052mm.

5. The optical lens according to claim 1, characterized in that, A shortest distance D of a groove bottom surface of the sunken annular groove (20) to the bearing annular surface (10) in the direction of the central axis of the optical lens satisfies: 0.01mm≤D≤0.02mm.

6. The optical lens according to claim 1, characterized in that, The at least one identification boss (30) comprises a first boss (31) and a second boss (32) arranged at intervals, and an included angle E of the first boss (31) and the second boss (32) satisfies: 20°≤E≤180°.

7. The optical lens according to claim 6, characterized in that, The at least one identification boss (30) further comprises a third boss (33) located on a side of the second boss (32) away from the first boss (31), and an included angle F of the second boss (32) and the third boss (33) satisfies: 90°≤F≤180°.

8. An optical lens according to any one of claims 1 to 7, characterized in that, A maximum diameter of the identification boss (30) is greater than a minimum width of the sunken annular groove (20), the sunken annular groove (20) has at least one accommodation groove (21) extending to the central axis of the optical lens, and the identification boss (30) is arranged in the accommodation groove (21).

9. The optical lens according to claim 8, characterized in that, A groove wall surface of the accommodation groove (21) is a circular arc surface curved away from the center of the optical lens, and the groove wall surface of the accommodation groove (21) extends to a side of the bearing annular surface (10) close to the central axis of the optical lens.

10. The optical lens according to any one of claims 1 to 7, characterized in that, The minimum width of the sunken annular groove (20) is less than a maximum width of the bearing annular surface (10).

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