Lens assembly and optical lens

Abstract

The application provides a lens assembly and an optical lens. The lens assembly comprises: at least two lenses arranged in sequence from an object side to an image side; a spacer, which is arranged between two adjacent lenses; a first limiting structure, which is located on a non-optical surface of one of the two adjacent lenses facing the spacer; and a second limiting structure, which is located on a non-optical surface of the other of the two adjacent lenses facing the spacer. At least one of the first limiting structure and the second limiting structure is in abutment with the spacer. The technical scheme of the application solves the problem of poor imaging quality of the lens assembly in the prior art.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of optical lenses, and in particular, to a lens assembly and an optical lens. BACKGROUND

[0002] In the production process of the optical lens, baking is an indispensable process step. The optical lens needs to be baked to release internal stress, and the lens assembly in the optical lens needs to be baked to cure the glue. However, the spacer that plays a role of light shielding in the optical lens is prone to deformation in the baking process. When the deformation amount of the spacer is too large, glare is easily formed at the deformed position, thereby affecting the imaging quality of the lens in the optical lens.

[0003] That is, the lens assembly in the prior art has the problem of poor imaging quality. SUMMARY

[0004] The main purpose of the present application is to provide a lens assembly and an optical lens to solve the problem of poor imaging quality of the lens assembly in the prior art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present application, a lens assembly is provided, which comprises: at least two lenses arranged in sequence from an object side to an image side; a spacer, which is arranged between adjacent two lenses; a first limiting structure, which is located on a non-optical surface of one of the adjacent two lenses facing the spacer; and a second limiting structure, which is located on a non-optical surface of the other of the adjacent two lenses facing the spacer, at least one of the first limiting structure and the second limiting structure abutting against the spacer.

[0006] Further, the spacer has a first surface and a second surface arranged oppositely, the first limiting structure abutting against the first surface of the spacer, and the second limiting structure abutting against the second surface of the spacer or having a distance a between the second limiting structure and the second surface of the spacer; or the spacer has a first surface and a second surface arranged oppositely, the second limiting structure abutting against the second surface of the spacer, and the first limiting structure having a distance a between the first limiting structure and the first surface of the spacer.

[0007] Further, when the second limiting structure has a distance a between the second limiting structure and the second surface of the spacer, or the first limiting structure has a distance a between the first limiting structure and the first surface of the spacer, the distance a satisfies the following relationship: 0.005mm≤a≤0.5mm.

[0008] Further, the distance a satisfies the following relationship: 0.005mm≤a≤0.2mm.

[0009] Furthermore, the first limiting structure includes one or more first protrusions connected to one of the two adjacent lenses. When the first limiting structure includes multiple protrusions, the multiple first protrusions are spaced apart along the optical axis away from the lens. Alternatively, the second limiting structure includes one or more second protrusions connected to the other of the two adjacent lenses. When the second limiting structure includes multiple second protrusions, the multiple second protrusions are spaced apart along the optical axis away from the lens.

[0010] Furthermore, when the first limiting structure includes the first protrusion, the width c1 of the surface of the first protrusion facing the partition satisfies the following relationship: 0.05mm≤c1≤0.5mm; or, when the second limiting structure includes the second protrusion, the width c2 of the surface of the second protrusion facing the partition satisfies the following relationship: 0.05mm≤c2≤0.5mm.

[0011] Furthermore, the first limiting structure and the second limiting structure are set in a staggered manner.

[0012] Furthermore, when the first limiting structure is positioned close to the optical axis of the lens relative to the second limiting structure, there is a distance b1 between the lower edge of the first limiting structure and the inner surface of the spacer, and a distance b2 between the lower edge of the second limiting structure and the inner surface of the spacer. The distance b1 satisfies the following relationship: 0mm ≤ b1 ≤ 0.05mm, and the distance b2 satisfies the following relationship: 0.1mm ≤ b2 ≤ 0.35mm. Alternatively, when the second limiting structure is positioned close to the optical axis of the lens relative to the first limiting structure, there is a distance b1 between the lower edge of the first limiting structure and the inner surface of the spacer, and a distance b2 between the lower edge of the second limiting structure and the inner surface of the spacer. The distance b1 satisfies the following relationship: 0.1mm ≤ b1 ≤ 0.35mm, and the distance b2 satisfies the following relationship: 0mm ≤ b2 ≤ 0.05mm.

[0013] Furthermore, the thickness h of the septum satisfies the following relationship: 0.012mm≤h≤0.04mm.

[0014] Furthermore, the lens assembly includes n lenses, with a spacer 20 between any two adjacent lenses 10. The non-optical surface of the first lens 10 facing the spacer 20 is provided with a first limiting structure 30, and the non-optical surface of the nth lens 10 facing the spacer 20 is provided with a second limiting structure 40. The first limiting structure 30 and the second limiting structure 40 are respectively provided on the opposite sides of the nith lens 10 located in the middle. The first limiting structure 30 on the nith lens 10 is located close to the nth lens 10 and together with the second limiting structure 40 on the nth lens 10, limits the spacer 20 located between the two lenses 10. The second limiting structure 40 on the nith lens 10 is located close to the first lens 10 and together with the first limiting structure 30 on the n-(i+1)th lens, limits the spacer 20 located between the two lenses 10. Where n≥3, 1≤i<n, and i and n are both natural numbers.

[0015] According to another aspect of the present invention, an optical lens is provided, including a lens barrel and a lens assembly located within the lens barrel, the lens assembly being the lens assembly described above.

[0016] By applying the technical solution of this invention, a limiting structure that abuts against the spacer can prevent the spacer from deforming towards the side where the limiting structure is located; that is, the spacer can only deform towards the side where the other limiting structure is located. A gap exists between the other limiting structure, which does not abut against the spacer, and this gap can be used to control the amount of deformation of the spacer during the baking process. Thus, by using the first and second limiting structures, the amount of deformation of the spacer can be controlled, avoiding the situation where excessive deformation of the spacer during baking causes glare at the deformed location, affecting the imaging quality of the lens, thereby ensuring the optical performance of the lens. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0018] Figure 1 A schematic diagram of a first embodiment of the lens assembly according to the present invention is shown;

[0019] Figure 2 A schematic diagram of a second embodiment of the lens assembly according to the present invention is shown;

[0020] Figure 3 A schematic diagram of a third embodiment of the lens assembly according to the present invention is shown;

[0021] Figure 4 A schematic diagram of a fourth embodiment of the lens assembly according to the present invention is shown; and

[0022] Figure 5 A schematic diagram of a fifth embodiment of the lens assembly according to the present invention is shown.

[0023] The above figures include the following reference numerals:

[0024] 10. Lens; 11. First support protrusion; 12. Second support protrusion; 20. Spacer; 21. First surface; 22. Second surface; 30. First limiting structure; 40. Second limiting structure. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0027] In this invention, 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 intended to limit this invention.

[0028] The present invention and its embodiments provide a lens assembly. The lens assembly includes at least two lenses 10, a spacer 20, a first limiting structure 30, and a second limiting structure 40 arranged sequentially from the object side to the image side. The spacer 20 is located between two adjacent lenses 10, the first limiting structure 30 is located on the non-optical surface of one of the two adjacent lenses 10 facing the spacer 20, and the second limiting structure 40 is located on the non-optical surface of the other of the two adjacent lenses 10 facing the spacer 20. At least one of the first limiting structure 30 and the second limiting structure 40 abuts against the spacer 20.

[0029] According to the above configuration, the limiting structure that abuts against the spacer 20 can prevent the spacer 20 from deforming in the direction it faces, thus ensuring that the spacer 20 can only deform in the direction of the other limiting structure that does not abut against the spacer 20. The other limiting structure that does not abut against the spacer 20 can control the amount of deformation of the spacer 20 by the distance between itself and the surface of the spacer 20. In this way, the above-mentioned limiting mechanism can control the deformation of the spacer 20 during the baking process, thereby avoiding the situation where excessive deformation of the spacer 20 during baking causes glare at the deformation location of the spacer 20, which would affect the imaging quality of the lens 10, and thus ensuring the optical performance of the lens 10.

[0030] In this invention and its embodiments, such as Figure 1 As shown, in order to install the spacer 20, support protrusions are provided on the non-optical surfaces of the two lenses 10 facing each other. For example, a first support protrusion 11 is provided on the non-optical surface of one lens 10, and a second support protrusion 12 is provided on the non-optical surface of the other lens 10. The spacer 20 is located between the two lenses 10 and sandwiched between the first support protrusion 11 and the second support protrusion 12. The spacer 20 abuts against the first support protrusion 11 and the second support protrusion 12. By providing the first support protrusion 11 and the second support protrusion 12, the spacer 20 can be fixed between the two lenses.

[0031] The first support protrusion 11 is located away from the optical axis of the lens 10 relative to the first limiting structure 30 (i.e., the first support protrusion 11 is located outside the lens 10); the second support protrusion 12 is located away from the optical axis of the lens 10 relative to the second limiting structure 40.

[0032] Example 1

[0033] like Figure 1 As shown, in Embodiment 1 of the present invention, the spacer 20 has a first surface 21 and a second surface 22 disposed opposite to each other, the first limiting structure 30 abuts against the first surface 21 of the spacer 20, and the second limiting structure 40 has a distance a between it and the second surface 22 of the spacer 20.

[0034] According to the above configuration, during the baking process of the spacer 20, since the first limiting structure 30 abuts against the first surface 21 of the spacer 20, the first limiting structure 30 can prevent the spacer 20 from deforming in the direction toward the first limiting structure 30. When the spacer 20 is heated and deformed, it can only deform in the direction closer to the second limiting structure 40. Since there is a distance 'a' between the second limiting structure 40 and the second surface 22, the deformation of the spacer 20 does not exceed the distance 'a'. Thus, the deformation of the spacer 20 during heated deformation can be controlled by the second limiting structure 40. As can be seen from the above, the first limiting structure 30 and the second limiting structure 40 can control the deformation of the spacer 20 during the baking process, thereby avoiding the situation where excessive deformation of the spacer 20 leads to glare at the deformation position, which would affect the imaging quality of the lens 10, and thus ensuring the optical performance of the lens 10.

[0035] Specifically, such as Figure 1 As shown, the first limiting structure 30 is a first protrusion disposed on one of the two adjacent lenses 10, and the second limiting structure 40 is a second protrusion disposed on the other of the two adjacent lenses 10. According to the above configuration, the first and second protrusions can control the amount of deformation of the spacer 20 during the baking process, thereby preventing glare from forming at the deformation location of the spacer 20 due to excessive deformation, which would affect the imaging quality of the lens 10, thus ensuring the optical performance of the lens 10.

[0036] Of course, in alternative embodiments not shown in the accompanying drawings, depending on the actual situation, the first limiting structure 30 may include a plurality of first protrusions, and the second limiting structure 40 may include a plurality of second protrusions, or only the first limiting structure 30 may be configured as a plurality of first protrusions, or only the second limiting structure 40 may be configured as a plurality of second protrusions. The plurality of first protrusions or the plurality of second protrusions are spaced apart along a direction having a certain angle with the optical axis of the lens 10.

[0037] It should be noted that, in this application and its embodiments, the direction away from the optical axis of the lens refers to the direction away from the optical axis of the lens along the radial direction of the lens 10.

[0038] Specifically, such as Figure 1 As shown, the first protrusion (or the second protrusion) and the lens 10 connected to it are integrally formed, which facilitates the injection molding of the lens 10 and thus reduces production costs.

[0039] Of course, in alternative embodiments not shown in the accompanying drawings, the first protrusion (or the second protrusion) and the corresponding lens 10 can be set as separate components, depending on the actual situation.

[0040] Specifically, such as Figure 1As shown, there is a distance a between the second protrusion and the second surface 22 of the spacer 20, and the distance a satisfies the following relationship: 0.005mm≤a≤0.5mm.

[0041] It should be noted that when the spacer 20 is being baked, a certain amount of deformation is allowed to release the thermal stress generated when the spacer 20 expands due to heat. However, the deformation amount should not be too large, as excessive deformation will cause glare at the deformed position of the spacer 20, thereby affecting the imaging quality of the lens 10.

[0042] Based on the above configuration, the space accommodating the deformation of the spacer 20 can be limited by the second protrusion, thereby controlling the deformation of the spacer 20 to not exceed 0.5mm. This ensures that the deformation of the spacer 20 is within the allowable range. On the one hand, the spacer 20 can release the thermal stress generated during thermal expansion; on the other hand, it can effectively prevent the spacer 20 from generating glare that affects the imaging quality of the lens 10. Setting the distance a to be greater than or equal to 0.005mm ensures that the spacer 20 has a certain amount of deformation, which can release the thermal stress generated during thermal expansion and prevent the spacer 20 from being damaged and rendered unusable under the action of thermal stress.

[0043] Preferably, the distance a satisfies the following relationship: 0.005mm ≤ a ≤ 0.2mm. In the above setting, the deformation of the spacer 20 is controlled within 0.2mm. This ensures that the spacer 20 can better release the thermal stress generated by thermal expansion, and also better prevents the spacer 20 from generating glare that affects the imaging quality of the lens 10.

[0044] Specifically, such as Figure 1 As shown, the width c1 of the surface of the first protrusion facing the partition 20 satisfies the following relationship: 0.05mm ≤ c1 ≤ 0.5mm, and the width c2 of the surface of the second protrusion facing the partition 20 satisfies the following relationship: 0.05mm ≤ c2 ≤ 0.5mm. According to the above configuration, the ends of the first and second protrusions facing the partition 20 form flat surfaces. Thus, when the partition 20 deforms due to heat, the end faces of the partition 20 contact the end faces of the first and second protrusions, thereby enhancing the limiting effect of the first and second protrusions on the partition 20 and preventing the ends of the first and second protrusions from scratching the surface of the partition 20, thus ensuring the normal use of the partition 20.

[0045] It should be noted that in Example 1 of the present invention, the first and second protrusions are irregularly shaped bosses, which facilitates injection molding and thus reduces the manufacturing cost of the optical lens. Of course, in alternative embodiments not shown in the accompanying drawings, the first and second protrusions can also be set into regular shapes, such as frustums or truncated cones.

[0046] Specifically, such as Figure 1As shown, in the direction perpendicular to the optical axis of the lens 10, the first protrusion and the second protrusion are staggered. The first protrusion is positioned closer to the optical axis of the lens than the second protrusion. There is a distance b1 between the lower edge of the first protrusion and the inner surface of the spacer 20, and a distance b2 between the lower edge of the second protrusion and the inner surface of the spacer 20. The distance b1 satisfies the following relationship: 0mm≤b1≤0.05mm, and the distance b2 satisfies the following relationship: 0.1mm≤b2≤0.35mm.

[0047] According to the above settings, by further defining the relative positional relationship between the first protrusion, the second protrusion and the spacer 20, the first protrusion and the second protrusion can better limit the spacer 20 and control the amount of deformation of the spacer 20 during the baking process. This prevents the formation of glare at the deformation position of the spacer 20 due to excessive deformation, which would affect the imaging quality of the lens 10, thereby ensuring the optical performance of the lens 10.

[0048] It should be noted that the thickness h of the spacer 20 satisfies the following relationship: 0.012mm ≤ h ≤ 0.04mm. In this way, the spacer 20 can meet the dimensional requirements during optical lens assembly, thereby ensuring that the lens assembly can be smoothly installed inside the lens barrel.

[0049] Example 2

[0050] like Figure 2 As shown, the difference between Embodiment 2 and Embodiment 1 is that in Embodiment 2, the second limiting structure 40 abuts against the second surface 22 of the partition 20, and the first limiting structure 30 and the first surface 21 of the partition 20 are separated by a distance a.

[0051] In Example 2, the remaining structures are the same as in Example 1, and will not be described again here.

[0052] Example 3

[0053] like Figure 3 As shown, the difference between Embodiment 3 and Embodiment 1 is that in Embodiment 3, the second limiting structure 40 is positioned closer to the optical axis of the lens 10 than the first limiting structure 30. Specifically, there is a distance b1 between the lower edge of the first protrusion and the inner surface of the spacer 20, where b1 satisfies the following relationship: 0.1mm ≤ b1 ≤ 0.35mm. There is also a distance b2 between the lower edge of the second protrusion and the inner surface of the spacer 20, where b2 satisfies the following relationship: 0mm ≤ b2 ≤ 0.05mm.

[0054] In Example 3, the description of the remaining structures is the same as in Example 1, and will not be repeated here.

[0055] Example 4

[0056] like Figure 4As shown, the difference between Example 4 and Example 1 is that:

[0057] In Example 4, (1) the second limiting structure 40 abuts against the second surface 22 of the partition 20, and the first limiting structure 30 and the first surface 21 of the partition 20 are at a distance a.

[0058] (2) The second limiting structure 40 is positioned closer to the optical axis of the lens than the first limiting structure 30. Specifically, the lower edge of the first protrusion has a distance b1 between it and the inner surface of the spacer 20, satisfying the following relationship: 0.1mm≤b1≤0.35mm. The lower edge of the second protrusion has a distance b2 between it and the inner surface of the spacer 20, satisfying the following relationship: 0mm≤b2≤0.05mm.

[0059] In Example 4, the description of the remaining structures is the same as in Example 1, and will not be repeated here.

[0060] Example 5

[0061] For three or more lenses 10 arranged sequentially, the limiting structures described in Embodiments 1 to 4 can be used between any two adjacent lenses 10. In this way, the lens 10 located in the middle position has both a first limiting structure 30 and a second limiting structure 40, and the first limiting structure 30 and the second limiting structure 40 together limit the same spacer 20 between any two adjacent lenses 10. In the above arrangement, the deformation of the spacer 20 can be controlled by the first limiting structure 30 and the second limiting structure 40, thereby avoiding the situation where excessive deformation of the spacer 20 during baking causes glare at the deformed position, affecting the imaging quality of the lens 10, and thus ensuring the optical performance of the lens 10.

[0062] like Figure 5 As shown, the difference between Example 5 and Example 1 is that:

[0063] The lens assembly includes three lenses 10, with a spacer 20 between any two adjacent lenses 10. Among the three lenses 10, the non-optical surface of the first lens 10 closest to the object side facing the spacer 20 has a first limiting structure 30, and the non-optical surface of the third lens 10 closest to the image side facing the spacer 20 has a second limiting structure 40. The opposing surfaces of the second lens 10 in the middle position have corresponding first limiting structures 30 and 40. The first limiting structure 30 on the lens 10 closest to the object side and the second limiting structure 40 on the lens 10 in the middle position together limit the spacer 20 between the two lenses 10; the second limiting structure 40 on the lens 10 closest to the image side and the first limiting structure 30 on the lens 10 in the middle position together limit the spacer 20 between the two lenses 10.

[0064] The following is a detailed explanation with reference to the accompanying drawings:

[0065] It should be noted that, in order to clearly illustrate the relative positional relationship between lens 10 and spacer 20, spacer 20 disposed between the first lens 10 and the second lens 10 is referred to as the first spacer, and spacer 20 disposed between the second lens 10 and the third lens 10 is referred to as the second spacer.

[0066] Specifically, such as Figure 5 As shown, among the three lenses 10, the first limiting structure 30 on the first lens 10 is a first protrusion provided on the non-optical part surface of the first lens 10 facing the first spacer. The first limiting structure 30 and the second limiting structure 40 on the second lens 10, located in the middle position, correspond to a first protrusion and a second protrusion provided on opposite surfaces of the second lens 10, wherein the second protrusion is provided on the surface of the second lens 10 near the first lens 10, and the first protrusion is provided on the surface of the second lens 10 near the third lens 10. The second limiting structure 40 on the third lens 10 is a second protrusion provided on the non-optical part surface of the lens 10 facing the second spacer.

[0067] The first protrusion on the first lens 10 abuts against the first surface 21 of the first spacer. The second protrusion on the second lens 10 has a distance 'a' between it and the second surface 22 of the first spacer, where distance 'a' satisfies the following relationship: 0.005mm ≤ a ≤ 0.5mm. The width 'c1' of the first protrusion on the first lens 10 facing the first surface 21 of the first spacer satisfies the following relationship: 0.05mm ≤ c1 ≤ 0.5mm. The width 'c2' of the second protrusion on the second lens 10 facing the second surface 22 of the first spacer satisfies the following relationship: 0.05mm ≤ c2 ≤ 0.5mm. The first protrusion on the first lens 10 is offset relative to the second protrusion on the second lens 10, and the first protrusion on the first lens 10 is closer to the optical axis than the second protrusion on the second lens 10. The lower edge of the first protrusion on the first lens 10 has a distance 'b1' between it and the inner surface of the first spacer, where b1 satisfies the following relationship: 0mm ≤ b3 ≤ 0.05mm. The lower edge of the second protrusion on the second lens 10 is at a distance b2 from the inner side of the first spacer, and b2 satisfies the following relationship: 0.1mm≤b2≤0.35mm.

[0068] The first protrusion on the second lens 10 abuts against the first surface 21 of the second spacer. The second protrusion on the third lens 10 has a distance 'a' between it and the second surface 22 of the second spacer, where distance 'a' satisfies the following relationship: 0.005mm ≤ a ≤ 0.5mm. The width 'c3' of the first protrusion on the second lens 10 facing the first surface 21 of the second spacer satisfies the following relationship: 0.05mm ≤ c3 ≤ 0.5mm. The width 'c4' of the second protrusion on the third lens 10 facing the second surface 22 of the second spacer satisfies the following relationship: 0.05mm ≤ c4 ≤ 0.5mm. The first protrusion on the second lens 10 is offset relative to the second protrusion on the third lens 10, and is closer to the optical axis than the second protrusion on the third lens 10. The lower edge of the first protrusion on the second lens 10 has a distance 'b3' between it and the inner surface of the second spacer, where b3 satisfies the following relationship: 0mm ≤ b3 ≤ 0.05mm. The lower edge of the second protrusion on the third lens 10 is at a distance b4 from the inner surface of the second spacer, and b4 satisfies the following relationship: 0.1mm≤b4≤0.35mm.

[0069] It should be noted that, in order to clearly illustrate the relative positional relationship between the first protrusion on the second lens 10, the second protrusion on the third lens 10, and the second spacer, the width of the first surface 21 of the first protrusion on the second lens 10 facing the second spacer is set to c3, the width of the second surface 22 of the second protrusion on the third lens 10 facing the second spacer is set to c4, the distance between the lower edge of the first protrusion on the second lens 10 and the inner side surface of the second spacer is set to b3, and the distance between the lower edge of the second protrusion on the third lens 10 and the inner side surface of the second spacer is set to b4.

[0070] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects: During the baking process of the spacer, since the first limiting structure abuts against the first surface of the spacer, the first limiting structure can prevent the spacer from deforming in the direction toward the first limiting structure. When the spacer deforms due to heat, it can only deform in the direction closer to the second limiting structure, and since there is a distance 'a' between the second limiting structure and the second surface, the deformation of the spacer does not exceed the distance 'a'. Thus, the deformation of the spacer during heat deformation can be controlled by the second limiting structure. As can be seen from the above, the first limiting structure and the second limiting structure can control the deformation of the spacer during the baking process, thereby avoiding the situation where excessive deformation of the spacer leads to glare at the deformation position of the spacer, which would affect the imaging quality of the lens, and thus ensuring the optical performance of the lens.

[0071] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0072] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0073] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0074] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A lens assembly, characterized in that, The lens assembly includes: At least two lenses (10) arranged sequentially from the object side to the image side; Spacer (20), the spacer (20) is provided between each of two adjacent lenses (10); The first limiting structure (30) is located on the non-optical surface of one of the two adjacent lenses (10) facing the septum (20); The second limiting structure (40) is located on the non-optical surface of the other lens (10) of the two adjacent lenses (10) facing the spacer (20), and at least one of the first limiting structure (30) and the second limiting structure (40) abuts against the spacer (20); One lens (10) has a first support protrusion (11) on its non-optical surface, and the other lens (10) has a second support protrusion (12) on its non-optical surface. The spacer (20) is located between the two lenses (10) and sandwiched between the first support protrusion (11) and the second support protrusion (12). The spacer (20) abuts against the first support protrusion (11) and the spacer (20) abuts against the second support protrusion (12). The first support protrusion (11) and the first limiting structure (30) are radially spaced along the optical axis of the lens (10), and the second support protrusion (12) and the second limiting structure (40) are radially spaced along the optical axis of the lens (10). In a direction perpendicular to the optical axis of the lens 10, the first limiting structure (30) and the second limiting structure (40) are misaligned. When the first limiting structure (30) is positioned relative to the second limiting structure (40) near the optical axis of the lens, there is a distance b1 between the lower edge of the first limiting structure (30) and the inner surface of the partition (20), and a distance b2 between the lower edge of the second limiting structure (40) and the inner surface of the partition (20), wherein the distance b1 satisfies the following relationship: 0mm ≤ b1 ≤ 0.05mm, and the distance b2 satisfies the following relationship: 0.1mm ≤ b2 ≤ 0.35mm; or, When the second limiting structure (40) is positioned close to the optical axis of the lens relative to the first limiting structure (30), there is a distance b1 between the lower edge of the first limiting structure (30) and the inner side surface of the partition (20), and a distance b2 between the lower edge of the second limiting structure (40) and the inner side surface of the partition (20). The distance b1 satisfies the following relationship: 0.1mm≤b1≤0.35mm, and the distance b2 satisfies the following relationship: 0mm≤b2≤0.05mm.

2. The lens assembly according to claim 1, characterized in that, The partition (20) has a first surface (21) and a second surface (22) disposed opposite to each other. The first limiting structure (30) abuts against the first surface (21) of the partition (20), and the second limiting structure (40) abuts against the second surface (22) of the partition (20), or there is a distance 'a' between the second limiting structure (40) and the second surface (22) of the partition (20); or, The partition (20) has a first surface (21) and a second surface (22) disposed opposite to each other, the second limiting structure (40) abuts against the second surface (22) of the partition (20), and the first limiting structure (30) has a distance a between it and the first surface (21) of the partition (20).

3. The lens assembly according to claim 2, characterized in that, When there is a distance a between the second limiting structure (40) and the second surface (22) of the partition (20); or when there is a distance a between the first limiting structure (30) and the first surface (21) of the partition (20), the distance a satisfies the following relationship: 0.005mm≤a≤0.5mm.

4. The lens assembly according to claim 3, characterized in that, The distance a satisfies the following relationship: 0.005mm≤a≤0.2mm.

5. The lens assembly according to any one of claims 1 to 4, characterized in that, The first limiting structure (30) includes one or more first protrusions connected to one of the two adjacent lenses. When the first limiting structure (30) includes multiple protrusions, the multiple first protrusions are spaced apart along a direction away from the optical axis of the lens; or, The second limiting structure (40) includes one or more second protrusions connected to another lens of the two adjacent lenses. When the second limiting structure (40) includes multiple second protrusions, the multiple second protrusions are spaced apart along the optical axis away from the lens.

6. The lens assembly according to claim 5, characterized in that, When the first limiting structure (30) includes a first protrusion, the width c1 of the surface of the first protrusion facing the partition (20) satisfies the following relationship: 0.05 mm ≤ c1 ≤ 0.5 mm; or, When the second limiting structure (40) includes a second protrusion, the width c2 of the surface of the second protrusion facing the partition (20) satisfies the following relationship: 0.05 mm ≤ c2 ≤ 0.5 mm.

7. The lens assembly according to any one of claims 1 to 4, characterized in that, The thickness h of the partition (20) satisfies the following relationship: 0.012mm≤h≤0.04mm.

8. The lens assembly according to claim 1, characterized in that, The lens assembly includes n lenses, with a spacer (20) between any two adjacent lenses (10). The non-optical surface of the first lens (10) facing the spacer (20) is provided with the first limiting structure (30), and the non-optical surface of the nth lens (10) facing the spacer (20) is provided with the second limiting structure (40). The first limiting structure (30) and the second limiting structure (40) are respectively provided on the opposite sides of the nth lens (10) located in the middle. The first limiting structure (30) is set close to the nth lens (10) and together with the second limiting structure (40) set on the nth lens (10), limits the spacer (20) located in the two lenses (10); the second limiting structure (40) set on the nith lens (10) is set close to the first lens (10) and together with the first limiting structure (30) set on the n-(i+1)th lens, limits the spacer (20) located in the two lenses (10), where n≥3, 1≤i<n, and i and n are both natural numbers.

9. An optical lens, comprising a lens barrel and a lens assembly located within the lens barrel, characterized in that, The lens assembly is the lens assembly according to any one of claims 1 to 8.

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