Optical imaging lens

Abstract

The application discloses an optical imaging lens, which comprises an imaging lens group and multiple interval elements. The imaging lens group comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens arranged in sequence along an optical axis from an object side to an image side. The multiple interval elements comprise a fourth interval element arranged on an image side surface of the fourth lens and at least partially in contact with the fourth lens and a fifth interval element arranged on an image side surface of the fifth lens and at least partially in contact with the fifth lens. The object side surface or the image side surface of at least two lenses among the first lens to the fourth lens is concave. The object side surface of the first lens and the object side surface of the fifth lens have opposite surface types. The inner diameter d5s of the object side surface of the fifth interval element, the outer diameter D5s of the object side surface of the fifth interval element, the interval EP45 of the fourth interval element and the fifth interval element along the optical axis, the maximum thickness CP5 of the fifth interval element, the curvature radius R8 of the image side surface of the fourth lens and the curvature radius R9 of the object side surface of the fifth lens satisfy the condition: -10.0 < (D5s-d5s) / (EP45+CP5)+R8 / R9 < 10.0.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of optical elements, in particular to an optical imaging lens. BACKGROUND

[0002] At present, as the customer market has higher and higher requirements for the appearance of mobile phones, mobile phone manufacturers have higher and higher requirements for the camera function of mobile phones, and the number of optical lenses on mobile phones is increasing, and the space proportion of a single lens is smaller and smaller, and miniaturization of modules has gradually become a common goal pursued by lens suppliers and module factories. At the same time, the reasonable cooperation between the spacer element, the lens barrel structure and the lens is also the key to guarantee the optical imaging quality. In the prior art, the unreasonable arrangement between the spacer element, the lens barrel structure and the lens can easily lead to problems such as stray light and structural stability of the lens.

[0003] Therefore, there is still a lot of room for exploration on how to reasonably arrange multiple lenses and spacer elements while ensuring that the optical imaging specification remains unchanged, improve the assembly stability, reduce stray light, and optimize the appearance structure of the lens. SUMMARY

[0004] The present application provides an optical imaging lens, which comprises: an imaging lens group comprising a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens arranged in order from the object side to the image side along the optical axis; and a plurality of spacer elements comprising a fourth spacer element disposed on the image side of the fourth lens and at least partially in contact with the fourth lens, and a fifth spacer element disposed on the image side of the fifth lens and at least partially in contact with the fifth lens; wherein at least two of the first lens to the fourth lens have a concave surface on the object side or the image side; the object side surface of the first lens and the object side surface of the fifth lens have opposite convex-concave surface shapes; and the inner diameter d5s of the object side surface of the fifth spacer element, the outer diameter D5s of the object side surface of the fifth spacer element, the interval EP45 of the fourth spacer element and the fifth spacer element along the optical axis, the maximum thickness CP5 of the fifth spacer element, the radius of curvature R8 of the image side surface of the fourth lens and the radius of curvature R9 of the object side surface of the fifth lens satisfy: -10.0<(D5s-d5s) / (EP45+CP5)+R8 / R9<10.0.

[0005] In one embodiment, the inner diameter d5s of the object side surface of the fifth spacer element, the outer diameter D5s of the object side surface of the fifth spacer element, the interval EP45 of the fourth spacer element and the fifth spacer element along the optical axis, the maximum thickness CP5 of the fifth spacer element, the radius of curvature R8 of the image side surface of the fourth lens and the radius of curvature R9 of the object side surface of the fifth lens satisfy: -5.0<(D5s-d5s) / (EP45+CP5)+R8 / R9<5.0.

[0006] In one embodiment, the image side surface of the first lens is concave; and the image side surface of the third lens is concave.

[0007] In one embodiment, the optical imaging lens further comprises a first lens barrel for accommodating at least part of the imaging lens group or the spacer element, the first lens barrel has an inner wall perpendicular to the optical axis, the object side surface of the first lens is at least partially in contact with the inner wall of the first lens barrel perpendicular to the optical axis, and the contact bandwidth is greater than or equal to 0.05 mm, and the flatness of the inner wall of the first lens barrel perpendicular to the optical axis is less than 0.001 mm.

[0008] In one embodiment, the optical imaging lens further comprises a first lens barrel for accommodating at least part of the imaging lens group or the spacer element, the first lens barrel has a front end surface facing the object side; wherein the minimum inner diameter ds of the front end portion of the first lens barrel facing the object side, the outer diameter D0s of the front end surface of the first lens barrel, the curvature radius R1 of the object side surface of the first lens, and the curvature radius R2 of the image side surface of the first lens satisfy: D0s / ds-R1 / R2>0.5.

[0009] In one embodiment, the fourth lens has positive refractive power, the object side surface thereof is convex, and the image side surface thereof is convex.

[0010] In one embodiment, the sixth lens has positive refractive power, and the object side surface thereof is convex.

[0011] In one embodiment, the plurality of spacer elements further comprises a second spacer element disposed on the image side surface of the second lens and at least partially in contact with the second lens; the outer diameter D2m of the image side surface of the second spacer element, the maximum diameter DP2 of the second lens, the curvature radius R3 of the object side surface of the second lens, the curvature radius R4 of the image side surface of the second lens, and the effective focal length f2 of the second lens satisfy: D2m / DP2-(R4-R3) / f2>0.2.

[0012] In one embodiment, the optical imaging lens further comprises a first lens barrel for accommodating at least part of the imaging lens group or the spacer element, the first lens barrel has a front end surface facing the object side and a rear end surface facing the imaging side, half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens ImgH, the axial distance TD from the object side surface of the first lens to the image side surface of the last lens, the outer diameter D0m of the rear end surface of the first lens barrel, the inner diameter d0m of the rear end surface of the first lens barrel, and the distance L from the front end surface of the first lens barrel to the rear end thereof satisfy: ImgH / TD / [(D0m-d0m) / L]>1.0.

[0013] In one embodiment, the plurality of spacer elements further comprises a third spacer element disposed on the image side of the third lens and in at least partial contact with the third lens; an inner diameter d3m of the image side of the third spacer element, an outer diameter D3m of the image side of the third spacer element, a spacing EP23 of the second spacer element and the third spacer element along the optical axis, a maximum thickness CP3 of the third spacer element, an air spacing T23 of the second lens and the third lens on the optical axis and a central thickness CT3 of the third lens on the optical axis satisfy: D3m / (EP23+CP3)+d3m / (T23+CT3)>10.0.

[0014] In one embodiment, a maximum diameter DP4 of the fourth lens, a maximum diameter DP5 of the fifth lens, an outer diameter D4m of the image side of the fourth spacer element, an outer diameter D5m of the image side of the fifth spacer element, a central thickness CT4 of the fourth lens on the optical axis and a central thickness CT5 of the fifth lens on the optical axis satisfy: (DP4 / D4m+DP5 / D5m) / (CT4+CT5)>0.5.

[0015] In one embodiment, the optical imaging lens further comprises a first lens barrel for accommodating at least part of the imaging lens group or the spacer elements, the plurality of spacer elements further comprises a first spacer element disposed on the image side of the first lens and in at least partial contact with the first lens; a spacing EP01 of a front end surface of the first lens barrel closest to the object side and the first spacer element on the optical axis, a maximum thickness CP1 of the first spacer element, an outer diameter D1m of the image side of the first spacer element, an inner diameter d1m of the image side of the first spacer element, a central thickness CT1 of the first lens on the optical axis, and an air spacing T12 of the first lens and the second lens on the optical axis satisfy: (EP01+CP1) / (D1m-d1m)+CT1 / T12>1.0.

[0016] In one embodiment, a spacing EP01 of a front end surface of the first lens barrel closest to the object side and the first spacer element on the optical axis, a maximum thickness CP1 of the first spacer element, an outer diameter D1m of the image side of the first spacer element, an inner diameter d1m of the image side of the first spacer element, a central thickness CT1 of the first lens on the optical axis, and an air spacing T12 of the first lens and the second lens on the optical axis satisfy: 1.5<(EP01+CP1) / (D1m-d1m)+CT1 / T12<7.0.

[0017] In one embodiment, a central thickness CT6 of the sixth lens on the optical axis, a central thickness CT7 of the seventh lens on the optical axis, an air spacing T67 of the sixth lens and the seventh lens on the optical axis, a maximum diameter DP6 of the sixth lens, and a maximum diameter DP7 of the seventh lens satisfy: (DP7-DP6)XT67 / (CT6+CT7)>3.0.

[0018] In one embodiment, the optical imaging lens further comprises a first lens barrel and a second lens barrel for accommodating the at least partial imaging lens group or the spacer element, the second lens barrel is connected to the outside of the first lens barrel by a thread structure or a snap structure.

[0019] In one embodiment, the optical imaging lens further comprises a first lens barrel for accommodating the at least partial imaging lens group or the spacer element, the first lens barrel has a front end surface facing the object side; the plurality of spacer elements comprises a third spacer element disposed on the image side surface of the third lens and at least partially in contact with the third lens; the third spacer element has at least two spacer elements between the third spacer element and the front end surface of the first lens barrel.

[0020] In one embodiment, the plurality of spacer elements are formed of light-proof material.

[0021] The optical imaging lens of the present application is composed of a plurality of lenses and a plurality of spacer elements, the combination of the plurality of lenses can ensure the imaging effect of the optical imaging lens and make the imaging effect meet more requirements, at the same time, the built-in plurality of spacer elements of the optical imaging lens of the present application can improve the strength of the optical imaging lens and reduce stray light. The optical imaging lens of the present application has at least one beneficial effect of assembly stability, high imaging quality, less stray light, etc. BRIEF DESCRIPTION OF DRAWINGS

[0022] Other features, objects, and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments made with reference to the accompanying drawings:

[0023] Figure 1 The structural arrangement diagram and the schematic diagram of part parameters of an optical imaging lens according to the present application are shown;

[0024] Figures 2A-2C The structural schematic diagrams of three optical imaging lenses according to Embodiment 1 of the present application are shown;

[0025] Figures 3A-3C The on-axis chromatic aberration curve, the astigmatism curve and the distortion curve of the optical imaging lens according to Embodiment 1 of the present application are shown respectively;

[0026] Figures 4A-4C The structural schematic diagrams of three optical imaging lenses according to Embodiment 2 of the present application are shown;

[0027] Figures 5A-5C The on-axis chromatic aberration curve, the astigmatism curve and the distortion curve of the optical imaging lens according to Embodiment 2 of the present application are shown respectively;

[0028] Figure 6 The structural schematic diagram of the optical imaging lens according to Embodiment 3 of the present application is shown;

[0029] Figures 7A-7C On-axis chromatic aberration curves, astigmatism curves and distortion curves of the optical imaging lens according to Embodiment 3 of the present application are shown;

[0030] Figure 8 A structural schematic diagram of an optical imaging lens according to Embodiment 4 of the present application is shown; and

[0031] Figures 9A-9C On-axis chromatic aberration curves, astigmatism curves and distortion curves of the optical imaging lens according to Embodiment 4 of the present application are shown. DETAILED DESCRIPTION

[0032] For a better understanding of the present application, various aspects of the present application will be described in more detail below with reference to the accompanying drawings. It is to be noted that the detailed description is only a description of exemplary embodiments of the present application and does not limit the scope of the present application in any way. Throughout the specification, like reference numerals refer to like elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0033] It should be noted that, in the present specification, the expressions first, second, third and the like are merely used to distinguish one feature from another feature, and do not represent any limitation on the features. Therefore, the first lens discussed below can also be referred to as the second lens or the third lens without departing from the teachings of the present application.

[0034] In the drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for ease of explanation. Specifically, the shape of the spherical surface or aspherical surface shown in the drawings is shown by way of example. That is, the shape of the spherical surface or aspherical surface is not limited to the shape of the spherical surface or aspherical surface shown in the drawings. The drawings are merely examples and are not drawn strictly to scale.

[0035] In the present specification, the paraxial region refers to a region near the optical axis. If a lens surface is convex and the position of the convex surface is not specified, it means that the lens surface is convex at least in the paraxial region. If a lens surface is concave and the position of the concave surface is not specified, it means that the lens surface is concave at least in the paraxial region. The concave-convex judgment of the surface shape in the paraxial region can be made by the judgment method of those skilled in the art, with the R value (R refers to the radius of curvature in the paraxial region) being positive or negative. The surface of each lens closest to the object is referred to as the object side surface of the lens, and the surface of each lens closest to the imaging surface is referred to as the image side surface of the lens. In terms of the object side surface, when the R value is positive, it is judged to be convex, and when the R value is negative, it is judged to be concave. In terms of the image side surface, when the R value is positive, it is judged to be concave, and when the R value is negative, it is judged to be convex.

[0036] It should also be understood that the use of the terms "have", "has", "having", "include", "includes", "including", "contain", "contains", or "containing", when appearing in the specification, are used to indicate the presence of the stated feature, element, component, or step, but do not preclude the presence or addition of one or more other features, elements, components, steps, or groups thereof. Also, as used in the description herein, the phrase "at least one of" followed by a listing of two or more items means that at least one of the listed items is present at any given occurrence of the phrase. Further, as used herein, the phrase "occurring at least once" means that the event occurs at least once, but does not exclude the event from occurring more than once. Also, as used herein, the phrase "occurring one and only one time" means that the event occurs exactly once. Further, as used herein, the term "set" means one or more.

[0037] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0038] It should be noted that the embodiments and features of the embodiments in the present application can be combined with each other without conflict. The following embodiments only express several embodiments of the present application, which are described in detail and specifically, but should not be understood as limiting the scope of the patent of the present application. It should be noted that for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of protection of the present application, for example, the imaging lens group, the lens barrel structure and the spacer element in each embodiment of the present application can be combined arbitrarily, and are not limited to the combination of the imaging lens group, the lens barrel structure, the spacer element and the like in one embodiment.

[0039] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0040] The optical imaging lens according to the exemplary embodiments of the present application can include an imaging lens group and a plurality of spacer elements. The imaging lens group can include, in order from the object side to the image side along the optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The plurality of spacer elements include a fourth spacer element disposed on the image side of the fourth lens and at least partially in contact with the fourth lens, and a fifth spacer element disposed on the image side of the fifth lens and at least partially in contact with the fifth lens. The plurality of spacer elements are formed of a light-blocking material. The use of the spacer elements between the lenses can avoid direct contact between the lenses, thereby blocking the transmission of light between the lenses, filtering non-imaging light, and improving the phenomenon of stray light.

[0041] In exemplary embodiments, the plurality of spacer elements of the optical imaging lens according to the present application can include a first spacer element disposed on the image side of the first lens and at least partially in contact with the first lens, a second spacer element disposed on the image side of the second lens and at least partially in contact with the second lens, a third spacer element disposed on the image side of the third lens and at least partially in contact with the third lens, a fourth spacer element disposed on the image side of the fourth lens and at least partially in contact with the fourth lens, a fifth spacer element disposed on the image side of the fifth lens and at least partially in contact with the fifth lens, and a sixth spacer element disposed on the image side of the sixth lens and at least partially in contact with the sixth lens.

[0042] In exemplary embodiments, the object side or the image side of at least two of the first lens to the fourth lens of the optical imaging lens according to the present application is concave; the object side of the first lens and the object side of the fifth lens have opposite convex-concave surface shapes, which is conducive to meeting the imaging requirements of the lens, different shapes of lens surfaces have different focal lengths and different effects on light rays, and the imaging lens group is the superposition of different lens surfaces, and a certain imaging effect is achieved through the focal length superposition of different lens surfaces.

[0043] In exemplary embodiments, the image side of the first lens of the optical imaging lens according to the present application is concave; the image side of the third lens is concave, which is conducive to better transmission of light rays after entering the lens, the concave image side converges the light rays to ensure complete energy transmission of the light rays, and the greater the focal length of the concave surface, the higher the light energy transmission rate.

[0044] In exemplary embodiments, the fourth lens of the optical imaging system according to the present application has positive refractive power, the object side thereof is convex, and the image side thereof is convex, and the sixth lens has positive refractive power, the object side thereof is convex. Reasonably setting the refractive power and surface shape of the lens is conducive to changing the propagation path of the light rays in the lens group, the convex object side allows more light rays to enter the lens, the greater the energy transmission, the higher the imaging quality; the convex image side has a diverging effect on the light rays, the greater the focal length of the convex surface, the more serious the divergence of the light rays, the greater the propagation diameter of the light rays, and the more obvious the improvement of the image height.

[0045] In exemplary embodiments, the first lens of the optical imaging system according to the present application can have positive refractive power or negative refractive power; the second lens can have positive refractive power or negative refractive power; the third lens can have positive refractive power or negative refractive power; the fourth lens can have positive refractive power, the object side thereof is convex, and the image side thereof is convex; the fifth lens can have positive refractive power or negative refractive power; the sixth lens can have positive refractive power, the object side thereof is convex; and the seventh lens has positive refractive power or negative refractive power. By reasonably controlling the positive and negative distribution of the refractive power of each lens of the optical imaging system, the low-order aberration of the optical imaging lens group can be effectively balanced and controlled, the sensitivity of the tolerance can be reduced, and the miniaturization of the system can be maintained.

[0046] In an example embodiment, the optical imaging lens according to the present application comprises a first lens barrel for accommodating at least part of the imaging lens group or the spacer element, the first lens barrel having a front end surface facing the object side and a rear end surface facing the imaging side. The first lens barrel has an inner wall perpendicular to the optical axis, the object side surface of the first lens is at least partially in contact with the inner wall of the first lens barrel perpendicular to the optical axis, the mutual contact width is greater than or equal to 0.05 mm, and the flatness of the inner wall of the first lens barrel perpendicular to the optical axis is less than 0.001 mm, which is conducive to meeting the assembly and fixing requirements of the optical imaging lens, the first lens is in direct contact with the first lens barrel and is fixed in position, laying the foundation for the fixing state of the rear lens. The greater the contact area between the first lens and the first lens barrel, the smaller the flatness of the inner wall of the first lens barrel perpendicular to the optical axis, and the better the assembly stability of the optical imaging lens.

[0047] In an example embodiment, the optical imaging lens according to the present application can comprise a first lens barrel and a second lens barrel for accommodating at least part of the imaging lens group or the spacer element, and the second lens barrel is connected to the outer side of the first lens barrel through a threaded structure or a buckle structure. The split structure of the lens barrel can optimize the problems of uneven lens barrel forming, poor internal structure roundness and coaxiality caused by the overlarge lens barrel; the split structure can also protect the lens and complete the lens assembly; the split lens barrel can be fixed together in different ways, including but not limited to threads and buckles. The threaded and buckled structure combination can ensure the stability of different lens barrel segments and accurately control the distance between the two segments, ensuring the imaging effect of the lens.

[0048] Figure 1 The structural arrangement diagram and the schematic diagram of part of the parameters of an optical imaging lens according to the present application are shown. Those skilled in the art should understand that some parameters commonly used in the art, such as the center thickness CT1 of the first lens on the optical axis, are not shown in the Figure 1 Figure 1 Only part of the parameters of an optical imaging lens according to the present application are shown exemplarily to facilitate better understanding of the present application.

[0049] In an example embodiment, the optical imaging lens according to the present application satisfies: -10.0 < (D5s-d5s) / (EP45+CP5)+R8 / R9 < 10.0, wherein, as Figure 1 ​As shown, d5s is the inner diameter of the object side surface of the fifth spacer element, D5s is the outer diameter of the object side surface of the fifth spacer element, EP45 is the interval of the fourth spacer element and the fifth spacer element along the optical axis, CP5 is the maximum thickness of the fifth spacer element, R8 is the curvature radius of the image side surface of the fourth lens, and R9 is the curvature radius of the object side surface of the fifth lens. Satisfying -10.0 < (D5s-d5s) / (EP45+CP5)+R8 / R9 < 10.0 is conducive to ensuring the assembly needs of the optical imaging lens, the curvature radius R8 of the image side surface of the fourth lens and the curvature radius R9 of the object side surface of the fifth lens determine the surface trend of the fourth lens and the fifth lens, and simultaneously affect the maximum thickness CP5 of the fifth spacer element. The maximum thickness CP5 of the fifth spacer element is related to the outer diameter D5s of the object side surface of the fifth spacer element and the inner diameter d5s of the object side surface of the fifth spacer element. The closer the maximum thickness CP5 of the fifth spacer element to the bandwidth size of the fifth spacer element, the more obvious the improvement of the assembly stability of the lens, and the better the assembly stability of the lens.

[0050] In the example embodiment, preferably, D5s, d5s, EP45, CP5, R8 and R9 further satisfy -5.0 < (D5s-d5s) / (EP45+CP5)+R8 / R9 < 5.0. This is conducive to improving stray light, reducing the penetration of part of non-imaging light between lenses, and improving the imaging quality of the lens; through the conditional formula, it is helpful to ensure that the inner diameter of the object side surface of the spacer element is close to the optical outer diameter of the image side surface of the previous lens, and the inner diameter of the image side surface of the spacer element should be close to the optical outer diameter of the object side surface of the next lens, thereby improving the light blocking effect at this position; and simultaneously conducive to reducing the sensitivity of the fifth lens and the sixth lens.

[0051] In the example embodiment, the optical imaging lens further comprises a first lens barrel for accommodating at least part of the imaging lens group or the spacer element, and the first lens barrel has a front end surface facing the object side. According to the optical imaging lens of the present application, D0s / ds-R1 / R2 > 0.5, wherein, as shown in the formula, Figure 1As shown, ds is the minimum inner diameter of the front end portion of the first lens barrel on the object side, D0s is the outer diameter of the front end face of the first lens barrel, R1 is the curvature radius of the object side face of the first lens, and R2 is the curvature radius of the image side face of the first lens. More specifically, D0s, ds, R1, and R2 can further satisfy D0s / ds-R1 / R2>1.21. Satisfying D0s / ds-R1 / R2>0.5 helps to control the appearance of the optical imaging lens and ensure the performance requirements of the optical imaging lens. The minimum inner diameter ds of the front end portion of the lens barrel on the object side is the clear aperture of the lens barrel, and controlling ds can control the amount of light entering the optical imaging lens. The outer diameter D0s of the front end face of the lens barrel determines the size of the head of the optical imaging lens. For a module with a certain size of a mobile phone window, when the size of the head of the optical imaging lens is slightly larger than the size of the window, the overall appearance of the camera module is optimal, when the size of the head of the optical imaging lens is larger than the size of the window, the overall appearance of the camera module is second, and when the size of the head of the optical imaging lens is smaller than the size of the window, the overall appearance of the camera module is the worst. Satisfying D0s / ds-R1 / R2>0.5 also helps to ensure the size of the lens barrel structure portion at the position of the first lens, control the wall thickness of the lens barrel, and the larger the wall thickness of the lens barrel, the greater the pressure that the lens group can withstand during assembly, so that the assembly stability of the front end position of the optical imaging lens is better, and the reliability of the optical imaging lens under different conditions is improved.

[0052] In the example embodiment, the plurality of spacer elements further includes a second spacer element disposed on the image side face of the second lens and at least partially in contact with the second lens. The optical imaging lens according to the present application can satisfy D2m / DP2-(R4-R3) / f2>0.2, where D2m is the outer diameter of the image side face of the second spacer element, DP2 is the maximum diameter of the second lens, R3 is the curvature radius of the object side face of the second lens, R4 is the curvature radius of the image side face of the second lens, and f2 is the effective focal length of the second lens. Figure 1 As shown, D2m is the outer diameter of the image side face of the second spacer element, DP2 is the maximum diameter of the second lens, R3 is the curvature radius of the object side face of the second lens, R4 is the curvature radius of the image side face of the second lens, and f2 is the effective focal length of the second lens. More specifically, D2m, DP2, R4, R3, and f2 can further satisfy D2m / DP2-(R4-R3) / f2>0.65. Satisfying D2m / DP2-(R4-R3) / f2>0.2 helps to ensure the imaging and assembly stability of the optical imaging lens. Imaging light rays are refracted by different lenses, cross and converge, and finally converge to form an image at the imaging plane, so the curvature radius of each lens contributes to the final imaging effect. The curvature radius R3 of the object side face of the second lens and the curvature radius R4 of the image side face of the second lens together determine whether the second lens is a concave lens or a convex lens and jointly affect the configuration of the rear lens. The second spacer element is a component for connecting the second lens and the third lens during assembly, and the second spacer element cannot block light to ensure the integrity of the light passing through. The more complete the light, the better the imaging quality. At the same time, the second spacer element has a large enough contact area with the second lens and the third lens, and the larger the contact area, the better the assembly stability of the lens.

[0053] In exemplary embodiments, the optical imaging lens according to the present application can satisfy: ImgH / TD / [(D0m-d0m) / L]>1.0, where ImgH is half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens, TD is the axial distance from the object side surface of the first lens to the image side surface of the last lens, as shown in Figure 1 D0m is the outer diameter of the rear end surface of the first lens barrel, d0m is the inner diameter of the rear end surface of the first lens barrel, and L is the distance from the front end surface of the first lens barrel to its rear end surface. More specifically, ImgH, TD, D0m, d0m, and L can further satisfy: ImgH / TD / [(D0m-d0m) / L]>2.57. Satisfying ImgH / TD / [(D0m-d0m) / L]>1.0 is conducive to ensuring the performance and appearance of the optical imaging lens, and ensuring the matching degree of the optical imaging lens with the chip when designed. Under the condition of the wall thickness of the lens barrel, the larger the image height of the optical imaging lens, i.e., the larger ImgH, the larger the outer diameter D0m of the rear end surface of the lens barrel, the larger the light transmission space, and the higher the imaging quality of the optical imaging lens; the outer diameter D0m of the rear end surface of the lens barrel and the distance L from the front end surface of the lens barrel to its rear end surface jointly determine the appearance style of the lens. Under the condition of satisfying the motor adaptation, the larger the appearance adjustment space of the lens, the more beautiful it is.

[0054] In exemplary embodiments, the optical imaging lens according to the present application can satisfy: D3m / (EP23+CP3)+d3m / (T23+CT3)>10.0, where, as shown in Figure 1 d3m is the inner diameter of the image side surface of the third spacer element, D3m is the outer diameter of the image side surface of the third spacer element, EP23 is the spacing of the second spacer element and the third spacer element along the optical axis, CP3 is the maximum thickness of the third spacer element, T23 is the air spacing of the second lens and the third lens on the optical axis, and CT3 is the central thickness of the third lens on the optical axis. More specifically, D3m, EP23, CP3, d3m, T23, and CT3 can further satisfy: D3m / (EP23+CP3)+d3m / (T23+CT3)>16.01. Satisfying D3m / (EP23+CP3)+d3m / (T23+CT3)>10.0 is conducive to ensuring the molding needs of the lens, and the ratio of the central thickness CT3 of the third lens on the optical axis to EP23 determines the difficulty of molding the third lens. The closer the ratio is to 1, the smaller the difficulty of molding the lens. By controlling this conditional expression, the lens thickness uniformity of the third lens is improved, making the lens easier to mold.

[0055] In exemplary embodiments, the optical imaging lens according to the present application can satisfy: (DP4 / D4m+DP5 / D5m) / (CT4+CT5)>0.5, where, as shown inFigure 1 As shown, DP4 is the maximum diameter of the fourth lens, DP5 is the maximum diameter of the fifth lens, D4m is the outer diameter of the image side surface of the fourth spacer element, D5m is the outer diameter of the image side surface of the fifth spacer element, CT4 is the central thickness of the fourth lens on the optical axis, and CT5 is the central thickness of the fifth lens on the optical axis. More specifically, DP4, D4m, DP5, D5m, CT4, and CT5 further satisfy: (DP4 / D4m+DP5 / D5m) / (CT4+CT5)>1.42. Satisfying (DP4 / D4m+DP5 / D5m) / (CT4+CT5)>0.5 is advantageous to guarantee lens molding and assembly stability of the fourth lens and the fifth lens. By controlling the conditional expression, the assembly step difference of the fourth lens and the fifth lens is controlled, and the smaller the assembly step difference, the better the assembly stability of the lens. The maximum diameter D4m of the fourth lens and the central thickness CT4 of the fourth lens on the optical axis determine the difficulty of molding the fourth lens, and the maximum diameter D5m of the fifth lens and the central thickness CT5 of the fifth lens on the optical axis determine the difficulty of molding the fifth lens. By controlling the conditional expression, the molding difficulty of the fourth lens and the fifth lens is reduced.

[0056] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: (EP01+CP1) / (D1m-d1m)+CT1 / T12>1.0, wherein, as shown, Figure 1 EP01 is the interval between the front end surface of the first lens barrel closest to the object and the first spacer element on the optical axis, CP1 is the maximum thickness of the first spacer element, D1m is the outer diameter of the image side surface of the first spacer element, d1m is the inner diameter of the image side surface of the first spacer element, CT1 is the central thickness of the first lens on the optical axis, and T12 is the air interval between the first lens and the second lens on the optical axis. More specifically, EP01, CP1, D1m, d1m, CT1, and T12 further satisfy: (EP01+CP1) / (D1m-d1m)+CT1 / T12>2.63. Satisfying (EP01+CP1) / (D1m-d1m)+CT1 / T12>1.0 is advantageous to guarantee lens molding needs. By controlling the conditional expression, the ratio of EP01 to CT1 can be guaranteed, and the closer the ratio to 1, the easier the molding of the first lens. At the same time, by controlling the conditional expression, the mating surface of the first lens and the lens barrel and the mating surface of the first lens and the first spacer element can be guaranteed to coincide on the same straight line, and the larger the coincident area, the better the assembly stability.

[0057] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 1.5<(EP01+CP1) / (D1m-d1m)+CT1 / T12<7.0, wherein, as shown, Figure 1As shown, EP01 is the interval of the front end surface of the first lens barrel closest to the object side and the first spacer element on the optical axis, CP1 is the maximum thickness of the first spacer element, D1m is the outer diameter of the image side surface of the first spacer element, d1m is the inner diameter of the image side surface of the first spacer element, CT1 is the center thickness of the first lens on the optical axis, and T12 is the air interval of the first lens and the second lens on the optical axis. More specifically, EP01, CP1, D1m, d1m, CT1, and T12 further satisfy 2.63 < (EP01 + CP1) / (D1m - d1m) + CT1 / T12 < 4.87. Satisfying 1.5 < (EP01 + CP1) / (D1m - d1m) + CT1 / T12 < 7.0 is conducive to guaranteeing the need for lens molding, and by controlling the conditional expression, the ratio of EP01 to CT1 can be guaranteed, and the closer the ratio is to 1, the easier the first lens is to mold. At the same time, by controlling the conditional expression, the mating surface of the first lens and the lens barrel and the mating surface of the first lens and the first spacer element can be guaranteed to coincide on the same straight line, and the larger the coincident area, the better the assembly stability. In addition, by controlling the conditional expression, the interception of the first spacer element to the outgoing light of the first lens can be controlled. Under the condition of guaranteeing the illuminance of the lens, the more light is intercepted, the better the improvement of the stray light, and the higher the imaging quality of the lens.

[0058] In the example embodiment, the optical imaging lens according to the present application can satisfy (DP7 - DP6) x T67 / (CT6 + CT7) > 3.0, where CT6 is the center thickness of the sixth lens on the optical axis, CT7 is the center thickness of the seventh lens on the optical axis, and T67 is the air interval of the sixth lens and the seventh lens on the optical axis, as shown in Figure 1 DP6 is the maximum diameter of the sixth lens, and DP7 is the maximum diameter of the seventh lens. DP7, DP6, T67, CT6, and CT7 further satisfy (DP7 - DP6) x T67 / (CT6 + CT7) > 6.14. Satisfying (DP7 - DP6) x T67 / (CT6 + CT7) > 3.0 is conducive to meeting the control requirements of the appearance of the lens, and the greater the difference between the maximum diameter DP6 of the sixth lens and the maximum diameter DP7 of the seventh lens, the more complex the external structure of the lens barrel, and the greater the risk of one-piece lens barrel molding. By controlling the conditional expression, it is helpful to reduce the risk and use a split structure.

[0059] In exemplary embodiments, the effective focal length f of the optical imaging lens can be, for example, in the range of 5.91mm to 6.60mm, the effective focal length f1 of the first lens can be, for example, in the range of 9.74mm to 15.72mm, the effective focal length f2 of the second lens can be, for example, in the range of -57.01mm to 22.31mm, the effective focal length f3 of the third lens can be, for example, in the range of -23.15mm to -17.44mm, the effective focal length f4 of the fourth lens can be, for example, in the range of 9.83mm to 24.05mm, the effective focal length f5 of the fifth lens can be, for example, in the range of -48.05mm to -10.55mm, the effective focal length f6 of the sixth lens can be, for example, in the range of 5.56mm to 9.48mm, and the effective focal length f7 of the seventh lens can be, for example, in the range of -4.94mm to -4.40mm. The optical imaging lens according to the present application can have a small total optical length, for example, the total optical length TTL of the optical imaging lens can satisfy 7.47mm < TTL < 8.59mm, while having a large image surface.

[0060] In exemplary embodiments, the half of the diagonal length of the effective pixel area on the imaging surface ImgH satisfies: 6.12mm < ImgH < 6.34mm.

[0061] In exemplary embodiments, the maximum field of view angle FOV of the optical imaging lens satisfies: FOV ≥ 86°, and the maximum field of view angle FOV of the optical imaging lens can be, for example, in the range of 86.0° to 89.0°.

[0062] In exemplary embodiments, the optical imaging lens according to the present application can satisfy: f / EPD < 1.60, where f is the effective focal length of the optical imaging lens, and EPD is the entrance pupil diameter of the optical imaging lens. For example, f / EPD can be, for example, in the range of 1.47 to 1.60.

[0063] The optical imaging lens according to the above embodiments of the present application can employ multiple lenses, for example, seven lenses as above. By reasonably allocating the refractive power, surface type of each lens, the center thickness of each lens, and the on-axis distance between lenses, etc., the low-order aberrations of the optical imaging lens can be effectively balanced and controlled, while the sensitivity of its tolerance can be reduced, and the miniaturization of the optical imaging lens can be maintained.

[0064] In the embodiments of the present application, at least one of the mirror surfaces of each of the first lens to the seventh lens is an aspherical mirror surface. The aspherical lens is characterized in that the curvature is continuously changed from the center of the lens to the periphery of the lens. Unlike the spherical lens having a constant curvature from the center of the lens to the periphery of the lens, the aspherical lens has a better curvature radius characteristic, and has the advantages of improving the distortion aberration and improving the astigmatism aberration. After the aspherical lens is used, the aberration occurring during imaging can be eliminated as much as possible, and the imaging quality is improved. Alternatively, the object side surface and the image side surface of each of the first lens to the seventh lens are aspherical mirror surfaces.

[0065] However, those skilled in the art should understand that the number of lenses constituting the optical imaging lens can be changed without departing from the technical solutions claimed by the present application, to obtain the various results and advantages described in the present specification. For example, although the seven lenses are described as an example in the embodiments, the optical imaging lens is not limited to including seven lenses. If necessary, the optical imaging lens can also include other numbers of lenses.

[0066] The specific embodiments of the optical imaging lens applicable to the above-described embodiments are further described below with reference to the accompanying drawings.

[0067] Example 1

[0068] The following refers to Figures 2A-3C The optical imaging lenses 1001, 1002 and 1003 according to Embodiment 1 of the present application are described. Figures 2A-2C The structural schematic diagrams of the optical imaging lenses 1001, 1002 and 1003 according to Embodiment 1 of the present application are respectively shown.

[0069] As Figures 2A-2C shown, the optical imaging lenses 1001, 1002 and 1003 each include a lens barrel structure, an imaging lens group and a plurality of spacer elements.

[0070] As Figures 2A-2CAs shown, optical imaging lenses 1001, 1002, and 1003 employ the same imaging lens group. Each of these groups comprises a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and a seventh lens E7, arranged sequentially along the optical axis from the object side to the image side. Specifically, the first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has negative optical power, with its object-side surface S5 being concave and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being convex. The seventh lens E7 has negative optical power, with its object-side surface S13 being concave and its image-side surface S14 being convex. Light from the object passes sequentially along the first optical axis from the first lens E1 to the seventh lens E7, and is finally imaged on the imaging plane (not shown).

[0071] like Figures 2A-2B As shown, the optical imaging lenses 1001 and 1002 each include a plurality of spacer elements: a first spacer element P1, a second spacer element P2, a third spacer element P3, a fourth spacer element P4, and a fifth spacer element P5. The first spacer element P1 is disposed on the image-side surface of the first lens E1 and at least partially in contact with it; the second spacer element P2 is disposed on the image-side surface of the second lens E2 and at least partially in contact with it; the third spacer element P3 is disposed on the image-side surface of the third lens E3 and at least partially in contact with it; the fourth spacer element P4 is disposed on the image-side surface of the fourth lens E4 and at least partially in contact with it; and the fifth spacer element P5 is disposed on the image-side surface of the fifth lens E5 and at least partially in contact with it. The first spacer element P1, the second spacer element P2, the third spacer element P3, the fourth spacer element P4, and the fifth spacer element P5 are spacers. The aforementioned spacer elements P1 to P5 can block excess external light from entering, allowing the lens to better support the lens barrel and enhancing the structural stability of the optical imaging lens 1001 and the optical imaging lens 1002.

[0072] like Figure 2CAs shown, the plurality of spacer elements of the optical imaging lens 1003 includes: a first spacer element P1, a second spacer element P2, a third spacer element P3, a fourth spacer element P4, a fifth spacer element P5, and a sixth spacer element P5b. The first spacer element P1 is arranged on the image side of the first lens E1 and at least partially contacts the first lens E1, the second spacer element P2 is arranged on the image side of the second lens E2 and at least partially contacts the second lens E2, the third spacer element P3 is arranged on the image side of the third lens E3 and at least partially contacts the third lens E3, the fourth spacer element P4 is arranged on the image side of the fourth lens E4 and at least partially contacts the fourth lens E4, the fifth spacer element P5 is arranged on the image side of the fifth lens E5 and at least partially contacts the fifth lens E5, and the sixth spacer element P5b is arranged on the image side of the fifth spacer element P5 and at least partially contacts the fifth spacer element P5. The first spacer element P1, the second spacer element P2, the third spacer element P3, the fourth spacer element P4, and the sixth spacer element P5b are spacers, and the fifth spacer element P5 is a spacer ring. The above spacer elements P1 to P5b can prevent external stray light from entering, make the lens better abut the lens barrel, and enhance the structural stability of the optical imaging lens 1003.

[0073] As shown in FIG. 1, the optical imaging lens 1001, the optical imaging lens 1002, and the optical imaging lens 1003 are all arranged on the same optical axis. Figures 2A-2C As shown, the lens barrels of the optical imaging lenses 1001, 1002, and 1003 are all one, i.e., the first lens barrel J1.

[0074] In the present example, the effective focal length f of the optical imaging lenses 1001, 1002, and 1003 is 5.92 mm, the total optical length TTL (i.e., the distance on the optical axis from the object side S1 of the first lens E1 to the imaging surface of the optical imaging lens) of the optical imaging lenses 1001, 1002, and 1003 is 8.58 mm, the half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lenses 1001, 1002, and 1003 is 6.13 mm, the maximum field of view angle FOV of the optical imaging lenses 1001, 1002, and 1003 is 88.9°, and the ratio f / EPD of the effective focal length f of the optical imaging lenses 1001, 1002, and 1003 to the entrance pupil diameter EPD of the optical imaging lenses 1001, 1002, and 1003 is 1.48.

[0075] Table 1 shows the basic parameter table of the imaging lens group of the optical imaging lenses 1001, 1002, and 1003 of Example 1, wherein the units of the curvature radius, the thickness, and the effective focal length are all millimeters (mm).

[0076]

[0077]

[0078] Table 1

[0079] In Embodiment 1, the object side surface and the image side surface of any one of the first lens E1 to the seventh lens E7 are aspherical surfaces, and the surface type x of each aspherical surface can be defined by, but not limited to, the following aspherical surface formula:

[0080]

[0081] wherein x is the sag of the aspherical surface at a position along the optical axis at a height h from the vertex of the aspherical surface; c is the paraxial curvature of the aspherical surface, c = 1 / R (i.e., the paraxial curvature c is the inverse of the curvature radius R in Table 1 above); k is the conic coefficient; and Ai is the correction coefficient of the i-th order of the aspherical surface. Table 2 below gives the high-order term coefficients A4, A6, A8, A10, and A12 that can be used for each aspherical surface S1-S14 in Embodiment 1. 10 12 14 16 18 20 22 24 26 28 30 .

[0082] Face No. A4 A6 A8 A10 A12 A14 A16 S1 1.3881E-04 9.6656E-04 -8.3013E-04 4.5374E-04 -1.2104E-04 1.1176E-05 1.2269E-06 S2 -6.1163E-03 5.5879E-04 1.6564E-03 -1.6282E-03 8.0634E-04 -2.2750E-04 3.4654E-05 S3 -2.8129E-02 8.6577E-03 -1.8261E-02 3.6934E-02 -4.6254E-02 3.8391E-02 -2.1746E-02 S4 -2.2995E-02 2.0056E-03 2.4089E-04 1.2359E-03 -1.9838E-03 2.0104E-03 -1.5314E-03 S5 -7.7863E-03 -6.9949E-03 3.7332E-03 -2.4393E-03 -5.1688E-04 1.7941E-03 -1.0967E-03 S6 -6.5210E-02 2.7031E-02 2.3442E-02 -6.2349E-02 6.7357E-02 -4.8477E-02 2.5654E-02 S7 -7.0729E-02 3.8694E-02 -2.4144E-03 -1.6210E-02 1.4953E-02 -7.1359E-03 2.1147E-03 S8 -8.5200E-03 -3.0975E-02 5.1463E-02 -4.8049E-02 2.7498E-02 -1.0182E-02 2.5048E-03 S9 -6.6976E-02 4.9276E-02 -4.4464E-03 -2.0673E-02 1.7374E-02 -7.3824E-03 1.9659E-03 S10 -1.0667E-01 8.9344E-02 -4.8872E-02 1.7278E-02 -4.0344E-03 6.3267E-04 -7.0575E-05 S11 -4.4095E-02 1.9071E-02 -7.9618E-03 2.5687E-03 -6.6948E-04 1.2924E-04 -1.5703E-05 S12 7.0284E-03 -3.1471E-03 1.0032E-03 -2.1482E-04 2.4914E-05 -1.4317E-05 7.7497E-06 S13 5.4391E-02 -3.2096E-02 1.3131E-02 -3.8466E-03 7.9991E-04 -1.1911E-04 1.2868E-05 S14 4.5530E-02 -3.0955E-02 1.3395E-02 -3.6968E-03 6.7486E-04 -8.4597E-05 7.4803E-06

[0083] Table 2-1

[0084]

[0085]

[0086] Table 2-2

[0087] The optical imaging lenses 1001, 1002, and 1003 of Embodiment 1 differ in the adopted lens barrel structures and the structural dimensions of the spacer elements, and Table 3-1, Table 3-2, and Table 3-3 respectively show the lens barrel structure and spacer element structural parameter tables of the optical imaging lenses 1001, 1002, and 1003 of Embodiment 1, and Table 3-1, Table 3-2, and Table 3-3 respectively show the lens barrel structure and spacer element structural parameter tables of the optical imaging lenses 1001, 1002, and 1003 of Embodiment 1.

[0088] The units of each parameter in Table 3-3 are millimeters (mm).

[0089] d1m D1m D2m d3m D3m D4m d5s D5s 3.820 6.660 7.200 4.440 7.700 8.600 5.900 9.500 D5m ds d0m D0s D0m EP01 CP1 EP23 9.500 4.020 10.140 10.315 11.340 1.214 0.022 0.492 CP3 EP45 L DP2 DP4 DP5 DP6 DP7 0.022 0.818 5.309 6.66 7.70 8.60 9.50 12.30 CP5 0.022

[0090] Table 3-1

[0091] d1m D1m D2m d3m D3m D4m d5s D5s 3.820 6.660 5.800 4.440 7.700 8.200 5.900 9.500 D5m ds d0m D0s D0m EP01 CP1 EP23 9.500 4.020 10.140 10.315 11.340 1.214 0.022 0.492 CP3 EP45 L DP2 DP4 DP5 DP6 DP7 0.022 0.818 5.308 6.66 7.70 8.60 9.50 12.30 CP5 0.022

[0092] Table 3-2 ​​​​​​​​​​

[0093] d1m D1m D2m d3m D3m D4m d5s D5s 3.820 6.660 5.800 4.440 7.700 8.200 6.101 7.008 D5m ds d0m D0s D0m EP01 CP1 EP23 8.440 4.020 10.140 10.315 11.340 1.214 0.022 0.492 CP3 EP45 L DP2 DP4 DP5 DP6 DP7 0.022 0.578 5.309 6.66 7.70 8.20 9.50 12.30 CP5 0.340

[0094] Table 3-3

[0095] Figure 3A The on-axis chromatic aberration curves of the optical imaging lenses 1001, 1002 and 1003 of Example 1 are shown, which represent the convergence point deviation of light rays of different wavelengths after passing through the lenses. Figure 3B The astigmatism curves of the optical imaging lenses 1001, 1002 and 1003 of Example 1 are shown, which represent the meridional image curvature and sagittal image curvature. Figure 3C The distortion curves of the optical imaging lenses 1001, 1002 and 1003 of Example 1 are shown, which represent the distortion size values corresponding to different image heights. According to the distortion curves, the optical imaging lenses 1001, 1002 and 1003 of Example 1 can achieve good imaging quality. Figures 3A-3C It can be seen that the optical imaging lenses 1001, 1002 and 1003 given by Example 1 can achieve good imaging quality.

[0096] Example 2

[0097] The following refers to Figures 4A-5C The optical imaging lenses 2001, 2002 and 2003 according to Example 2 of the present application are described. In this embodiment and the following embodiments, some similar descriptions as Example 1 will be omitted for brevity. Figures 4A-4C The structural schematic diagrams of the optical imaging lenses 2001, 2002 and 2003 according to Example 2 of the present application are shown respectively.

[0098] As shown in Figures 4A-4C The optical imaging lenses 2001, 2002 and 2003 each include a lens barrel structure, an imaging lens group and a plurality of spacer elements.

[0099] As shown in Figures 4A-4CAs shown, optical imaging lenses 2001, 2002, and 2003 employ the same imaging lens group. Each of these groups comprises a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and a seventh lens E7, arranged sequentially along the optical axis from the object side to the image side. Specifically, the first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has negative optical power, with its object-side surface S5 being concave and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being concave and its image-side surface S14 being concave. Light from the object passes sequentially along the first optical axis from the first lens E1 to the seventh lens E7, and is finally imaged on the imaging plane (not shown).

[0100] like Figures 4A-4B As shown, the optical imaging lenses 2001 and 2002 employ multiple spacer elements, each including: a first spacer element P1, a second spacer element P2, a third spacer element P3, a fourth spacer element P4, a fifth spacer element P5, and a sixth spacer element P6. Specifically, the first spacer element P1 is disposed on the image-side surface of the first lens E1 and at least partially contacts the first lens E1; the second spacer element P2 is disposed on the image-side surface of the second lens E2 and at least partially contacts the second lens E2; the third spacer element P3 is disposed on the image-side surface of the third lens E3 and at least partially contacts the third lens E3; the fourth spacer element P4 is disposed on the image-side surface of the fourth lens E4 and at least partially contacts the fourth lens E4; the fifth spacer element P5 is disposed on the image-side surface of the fifth lens E5 and at least partially contacts the fifth lens E5; and the sixth spacer element P6 is disposed on the image-side surface of the sixth lens E6 and at least partially contacts the sixth lens E6. Among them, the first spacer element P1, the second spacer element P2, the third spacer element P3, the fourth spacer element P4, and the fifth spacer element P5 are spacers, and the sixth spacer element P6 is a pressure ring. The aforementioned spacers P1 to P6 can block excess external light from entering, allowing the lens to better support the lens barrel, and enhancing the structural stability of the optical imaging lens 2001 and the optical imaging lens 2002.

[0101] like Figure 4CAs shown, the plurality of spacer elements of the optical imaging lens 2003 includes: a first spacer element P1, a second spacer element P2, a third spacer element P3, a fourth spacer element P4, a fifth spacer element P5, a seventh spacer element P5b, and a sixth spacer element P6. Among them, the first spacer element P1 is arranged on the image side of the first lens E1 and at least partially contacts the first lens E1, the second spacer element P2 is arranged on the image side of the second lens E2 and at least partially contacts the second lens E2, the third spacer element P3 is arranged on the image side of the third lens E3 and at least partially contacts the third lens E3, the fourth spacer element P4 is arranged on the image side of the fourth lens E4 and at least partially contacts the fourth lens E4, the fifth spacer element P5 is arranged on the image side of the fifth lens E5 and at least partially contacts the fifth lens E5, the seventh spacer element P5b is arranged on the image side of the fifth spacer element P5 and at least partially contacts the fifth spacer element P5, and the sixth spacer element P6 is arranged on the image side of the sixth lens E6 and at least partially contacts the sixth lens E6. Among them, the first spacer element P1, the second spacer element P2, the third spacer element P3, the fourth spacer element P4, and the seventh spacer element P5b are spacers, the fifth spacer element P5 is a spacer ring, and the sixth spacer element P6 is a compression ring. The above-mentioned spacer elements P1 to P6 can block the entry of external excess light, make the lens and the lens barrel better abut, and enhance the structural stability of the optical imaging lens 2003.

[0102] As shown in FIGS. 1A and 1B, the optical imaging lens 2001, the optical imaging lens 2002, and the optical imaging lens 2003 are all arranged on the same optical axis O. Figures 4A-4C As shown, the lens barrels of the optical imaging lenses 2001, 2002, and 2003 each include a first lens barrel J1 and a second lens barrel J2. Among them, the second lens barrel J2 is connected to the outside of the first lens barrel J1 through a threaded structure.

[0103] In the present example, the effective focal length f of the optical imaging lenses 2001, 2002, and 2003 is 6.58 mm, the total optical length TTL (i.e., the distance on the optical axis from the object side S1 of the first lens E1 to the imaging surface of the optical imaging lens) of the optical imaging lenses 2001, 2002, and 2003 is 8.28 mm, the half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lenses 2001, 2002, and 2003 is 6.30 mm, the maximum field of view FOV of the optical imaging lenses 2001, 2002, and 2003 is 86.0°, and the ratio f / EPD of the effective focal length f of the optical imaging lenses 2001, 2002, and 2003 to the entrance pupil diameter EPD of the optical imaging lenses 2001, 2002, and 2003 is 1.59.

[0104] Table 4 shows the basic parameter table of the imaging lens group of the optical imaging lenses 2001, 2002 and 2003 of Example 2, wherein the units of the radius of curvature, the thickness and the effective focal length are all millimeters (mm). Table 5-1 and Table 5-2 show the high order term coefficients of the aspherical surfaces of the optical imaging lenses 2001, 2002 and 2003 of Example 2, wherein each aspherical surface can be defined by the formula (1) given in Example 1 above.

[0105]

[0106]

[0107] Table 4

[0108] Face No. A4 A6 A8 A10 A12 A14 A16 S1 -1.7640E-04 -1.2360E-03 2.0023E-03 -1.4442E-03 5.4848E-04 -8.3727E-05 -9.0525E-06 S2 -1.2556E-02 1.0082E-02 -1.5603E-02 1.2924E-02 -6.1651E-03 1.6629E-03 -2.2456E-04 S3 -2.1595E-02 3.8757E-02 -8.7007E-02 1.1453E-01 -9.6734E-02 5.3763E-02 -1.9398E-02 S4 2.3624E-02 -1.5777E-01 4.8360E-01 -9.2358E-01 1.1587E+00 -9.8815E-01 5.8250E-01 S5 1.3210E-02 -1.5305E-01 3.5863E-01 -5.8920E-01 7.0288E-01 -6.1223E-01 3.8621E-01 S6 9.7193E-02 -2.8586E-01 3.9926E-01 -3.3901E-01 1.7384E-01 -4.7527E-02 1.1604E-03 S7 1.1673E-01 -2.7004E-01 3.5250E-01 -2.8316E-01 1.4020E-01 -4.0292E-02 5.0227E-03 S8 -9.5936E-04 5.1820E-03 -2.5272E-02 2.8930E-02 -1.4880E-02 1.1084E-03 3.2758E-03 S9 7.7200E-02 -4.4344E-02 -1.0573E-02 4.1885E-02 -3.8913E-02 2.0798E-02 -7.1892E-03 S10 5.9490E-02 -5.6428E-02 7.8514E-03 3.3485E-02 -4.0917E-02 2.6222E-02 -1.1046E-02 S11 -1.0164E-02 -2.2952E-02 1.2814E-02 2.5612E-03 -8.2649E-03 5.8946E-03 -2.4339E-03 S12 -1.1213E-03 3.7901E-03 -8.4905E-03 6.4495E-03 -3.0702E-03 9.9934E-04 -2.2801E-04 S13 -2.6438E-02 1.8472E-02 -9.7612E-03 3.3404E-03 -7.7005E-04 1.2411E-04 -1.4251E-05 S14 -3.5544E-02 1.5924E-02 -5.1142E-03 1.0996E-03 -1.6567E-04 1.8089E-05 -1.4622E-06

[0109] Table 5-1

[0110] Face No. A18 A20 A22 A24 A26 A28 A30 S1 4.7668E-06 -4.5872E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 9.6723E-06 3.3877E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 4.2548E-03 -4.3937E-04 -1.7492E-05 9.0832E-06 -6.5970E-07 0.0000E+00 0.0000E+00 S4 -2.3738E-01 6.5644E-02 -1.1759E-02 1.2309E-03 -5.7189E-05 0.0000E+00 0.0000E+00 S5 -1.7404E-01 5.4879E-02 -1.1698E-02 1.5840E-03 -1.2039E-04 3.7565E-06 0.0000E+00 S6 4.0304E-03 -1.5078E-03 2.7076E-04 -2.5422E-05 1.0042E-06 0.0000E+00 0.0000E+00 S7 3.4063E-04 -8.5536E-05 -4.6431E-05 1.6770E-05 -2.0775E-06 9.3246E-08 0.0000E+00 S8 -2.2103E-03 7.4376E-04 -1.4958E-04 1.8003E-05 -1.1650E-06 2.6506E-08 4.4258E-10 S9 1.6518E-03 -2.4947E-04 2.3652E-05 -1.2799E-06 3.4992E-08 -9.5025E-10 5.0745E-11 S10 3.2676E-03 -6.9427E-04 1.0588E-04 -1.1336E-05 8.0946E-07 -3.4589E-08 6.6816E-10 S11 6.6536E-04 -1.2544E-04 1.6414E-05 -1.4649E-06 8.5068E-08 -2.8977E-09 4.3941E-11 S12 3.6618E-05 -4.0914E-06 3.0796E-07 -1.4552E-08 3.6216E-10 -1.8558E-12 -7.0102E-14 S13 1.1725E-06 -6.8713E-08 2.8135E-09 -7.7395E-11 1.3263E-12 -1.2082E-14 3.7691E-17 S14 8.8387E-08 -3.9902E-09 1.3271E-10 -3.1568E-12 5.0797E-14 -4.9516E-16 2.2069E-18

[0111] Table 5-2

[0112] The optical imaging lenses 2001, 2002 and 2003 of Example 2 differ in the adopted lens barrel structure and the structural dimensions of the spacer elements, and Table 6-1, Table 6-2 and Table 6-3 show the structural parameter tables of the lens barrel structure and the spacer elements of the optical imaging lenses 2001, 2002 and 2003 of Example 2, respectively, wherein the units of the parameters in Table 6-1, Table 6-2 and Table 6-3 are all millimeters (mm).

[0113] d1m D1m D2m d3m D3m D4m d5s D5s 3.920 5.241 5.480 4.040 7.400 8.100 5.600 8.400 D5m ds d0m D0s D0m EP01 CP1 EP23 8.400 4.160 13.720 8.066 14.260 1.114 0.022 0.583 CP3 EP45 L DP2 DP4 DP5 DP6 DP7 0.022 0.633 7.701 6.36 7.40 8.10 8.40 12.40 CP5 0.022

[0114] Table 6-1

[0115] d1m D1m D2m d3m D3m D4m d5s D5s 3.920 6.760 7.300 4.040 7.800 8.100 5.600 8.400 D5m ds d0m D0s D0m EP01 CP1 EP23 8.400 4.160 13.720 8.066 14.300 1.114 0.022 0.583 CP3 EP45 L DP2 DP4 DP5 DP6 DP7 0.022 0.633 7.701 6.76 7.80 8.10 8.40 12.40 CP5 0.022

[0116] Table 6-2

[0117] d1m D1m D2m d3m D3m D4m d5s D5s 3.920 6.760 7.300 4.040 7.400 7.700 6.148 7.615 D5m ds d0m D0s D0m EP01 CP1 EP23 7.700 4.160 13.720 8.066 14.300 1.114 0.022 0.583 CP3 EP45 L DP2 DP4 DP5 DP6 DP7 0.022 0.437 7.701 6.76 7.40 7.70 8.40 12.40 CP5 0.396

[0118] Table 6-3

[0119] Figure 5A The on-axis chromatic aberration curves of the optical imaging lenses 2001, 2002 and 2003 of Example 2 are shown, which represent the deviation of the converging focal points of light rays of different wavelengths after passing through the lenses. Figure 5B The astigmatism curves of the optical imaging lenses 2001, 2002 and 2003 of Example 2 are shown, which represent the meridional image curvature and sagittal image curvature. Figure 5C The distortion curves of the optical imaging lenses 2001, 2002 and 2003 of Example 2 are shown, which represent the distortion size values corresponding to different image heights. According to the distortion curves, the distortion values of the optical imaging lenses 2001, 2002 and 2003 of Example 2 are all less than 0.1% at the image height of 50 mm. Figures 5A-5CIt can be seen that the optical imaging lenses 2001, 2002 and 2003 given in Example 2 can achieve good imaging quality.

[0120] Example 3

[0121] The following is for reference Figures 6-7C The optical imaging lens 3000 according to Embodiment 3 of this application is described. Figure 6 A schematic diagram of the structure of an optical imaging lens 3000 according to Embodiment 3 of this application is shown.

[0122] like Figure 6 As shown, the optical imaging lens 3000 includes a lens barrel structure, an imaging lens group, and multiple spacer elements.

[0123] like Figure 6 As shown, the imaging lens group of the optical imaging lens 3000 includes a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and a seventh lens E7 arranged sequentially along the optical axis from the object side to the image side. Specifically, the first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being concave and its image-side surface S14 being convex. Light from the object passes sequentially along the first optical axis from the first lens E1 to the seventh lens E7, and is finally imaged on the imaging plane (not shown).

[0124] like Figure 6As shown, the plurality of spacer elements of the optical imaging lens 3000 includes a first spacer element P1, a second spacer element P2, a third spacer element P3, a fourth spacer element P4, a fifth spacer element P5, and a sixth spacer element P6. The first spacer element P1 is disposed on the image side of the first lens E1 and at least partially contacts the first lens E1, the second spacer element P2 is disposed on the image side of the second lens E2 and at least partially contacts the second lens E2, the third spacer element P3 is disposed on the image side of the third lens E3 and at least partially contacts the third lens E3, the fourth spacer element P4 is disposed on the image side of the fourth lens E4 and at least partially contacts the fourth lens E4, the fifth spacer element P5 is disposed on the image side of the fifth lens E5 and at least partially contacts the fifth lens E5, and the sixth spacer element P6 is disposed on the image side of the sixth lens E6 and at least partially contacts the sixth lens E6. The first spacer element P1, the second spacer element P2, the third spacer element P3, the fourth spacer element P4, and the fifth spacer element P5 are spacers, and the sixth spacer element P6 is a press ring. The above spacer elements P1-P6 can prevent external stray light from entering, make the lens better abut the lens barrel, and enhance the structural stability of the optical imaging lens 3000.

[0125] As shown in FIG. 3, the barrel of the optical imaging lens 3000 includes a first barrel J1 and a second barrel J2, wherein the second barrel J2 is connected to the outside of the first barrel J1 through a snap structure. Figure 6

[0126] In this example, the effective focal length f of the optical imaging lens 3000 is 6.59 mm, the total optical length TTL (i.e., the distance on the optical axis from the object side S1 of the first lens E1 to the imaging surface of the optical imaging lens) of the optical imaging lens 3000 is 8.33 mm, the half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens 3000 is 6.33 mm, the maximum field of view angle FOV of the optical imaging lens 3000 is 86.3°, and the ratio of the effective focal length f of the optical imaging lens 3000 to the entrance pupil diameter EPD of the optical imaging lens 3000 is f / EPD = 1.59.

[0127] Table 7 shows the basic parameter table of the imaging lens group of the optical imaging lens 3000 of Example 3, wherein the units of the curvature radius, the thickness, and the effective focal length are all millimeters (mm). Tables 8-1 and 8-2 show the high-order term coefficients of the aspherical surfaces that can be used in the optical imaging lens 3000 of Example 3, wherein each aspherical surface can be defined by the formula (1) given in Example 1.

[0128]

[0129] ​

[0130] Table 7

[0131] Face No. A4 A6 A8 A10 A12 A14 A16 S1 5.0167E-04 -3.0334E-03 6.2006E-03 -7.3572E-03 5.5750E-03 -2.7416E-03 8.7047E-04 S2 -8.3114E-03 -2.3267E-03 3.5308E-03 -3.5259E-03 2.2018E-03 -8.3796E-04 1.9055E-04 S3 -1.1948E-02 -4.3900E-03 8.1461E-03 -1.4213E-02 1.6989E-02 -1.3475E-02 7.3137E-03 S4 -4.7316E-03 -5.6215E-03 1.3351E-02 -2.6900E-02 3.6291E-02 -3.2877E-02 2.0701E-02 S5 -1.6910E-02 -6.3508E-03 -2.3936E-02 8.6687E-02 -1.5288E-01 1.7079E-01 -1.3005E-01 S6 3.6835E-02 -1.0803E-01 1.2979E-01 -9.4300E-02 3.1109E-02 8.1450E-03 -1.4099E-02 S7 5.2035E-02 -1.0772E-01 1.2074E-01 -7.3844E-02 9.7183E-03 2.1915E-02 -2.0321E-02 S8 -2.0103E-04 -1.4136E-02 1.2387E-02 -6.1032E-03 -8.1490E-04 4.4443E-03 -3.9684E-03 S9 5.8776E-02 -4.5911E-02 1.5201E-02 4.8725E-03 -9.1370E-03 5.3809E-03 -1.8221E-03 S10 4.7432E-02 -8.8584E-02 8.3810E-02 -5.7674E-02 2.9849E-02 -1.1538E-02 3.2320E-03 S11 -3.7857E-03 -4.5578E-02 5.0526E-02 -3.6077E-02 1.8208E-02 -6.7063E-03 1.8346E-03 S12 7.4074E-03 -2.0954E-04 -4.9185E-03 3.4820E-03 -1.4452E-03 4.1621E-04 -8.5854E-05 S13 1.0495E-02 2.1193E-03 -4.5700E-03 2.3495E-03 -7.1191E-04 1.4519E-04 -2.0749E-05 S14 5.6546E-03 4.9991E-04 -1.1170E-03 3.9192E-04 -7.7809E-05 1.0186E-05 -9.3072E-07

[0132] Table 8-1

[0133] Face No. A18 A20 A22 A24 A26 A28 A30 S1 -1.7218E-04 1.9304E-05 -9.3755E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 -2.3125E-05 1.0973E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 -2.7093E-03 6.7140E-04 -1.0629E-04 9.7197E-06 -3.9200E-07 0.0000E+00 0.0000E+00 S4 -9.1133E-03 2.7636E-03 -5.5216E-04 6.5612E-05 -3.5181E-06 0.0000E+00 0.0000E+00 S5 6.9427E-02 -2.6069E-02 6.7586E-03 -1.1537E-03 1.1687E-04 -5.3306E-06 0.0000E+00 S6 7.3173E-03 -2.1557E-03 3.8285E-04 -3.8314E-05 1.6652E-06 0.0000E+00 0.0000E+00 S7 9.5089E-03 -2.8065E-03 5.4285E-04 -6.7077E-05 4.8216E-06 -1.5385E-07 0.0000E+00 S8 1.9929E-03 -6.3836E-04 1.3318E-04 -1.7580E-05 1.3368E-06 -4.4689E-08 0.0000E+00 S9 3.8331E-04 -4.9418E-05 3.6208E-06 -1.2710E-07 1.8680E-09 -7.0794E-11 0.0000E+00 S10 -6.1696E-04 6.8272E-05 -1.1065E-06 -8.7723E-07 1.3273E-07 -8.5417E-09 2.1661E-10 S11 -3.7571E-04 5.7481E-05 -6.4808E-06 5.2274E-07 -2.8509E-08 9.3983E-10 -1.4104E-11 S12 1.2648E-05 -1.3063E-06 9.1022E-08 -3.9488E-09 8.6388E-11 -1.2221E-13 -2.1717E-14 S13 2.1129E-06 -1.5407E-07 7.9925E-09 -2.8849E-10 6.9014E-12 -9.8618E-14 6.3884E-16 S14 6.0982E-08 -2.8925E-09 9.8760E-11 -2.3710E-12 3.8040E-14 -3.6651E-16 1.6047E-18

[0134] Table 8-2

[0135] Table 9 shows a structure parameter table of the barrel structure and the spacer element of the optical imaging lens 3000 of Embodiment 3, and the units of the parameters in Table 9 are millimeters (mm).

[0136] d1m D1m D2m d3m D3m D4m d5s D5s 3.920 5.240 5.504 4.240 7.400 8.100 5.600 8.400 D5m ds d0m D0s D0m EP01 CP1 EP23 8.400 4.160 13.720 8.066 14.260 1.332 0.022 0.629 CP3 EP45 L DP2 DP4 DP5 DP6 DP7 0.022 0.633 7.917 6.36 7.40 8.10 8.40 12.40 CP5 0.022

[0137] Table 9

[0138] Figure 7A The on-axis chromatic aberration curve of the optical imaging lens 3000 of Embodiment 3 is shown, which represents the convergence focus deviation of light rays of different wavelengths after passing through the lens. Figure 7B The astigmatism curve of the optical imaging lens 3000 of Embodiment 3 is shown, which represents the meridional image surface curvature and sagittal image surface curvature. Figure 7C The distortion curve of the optical imaging lens 3000 of Embodiment 3 is shown, which represents the distortion size values corresponding to different image heights. According to Figures 7A-7C It can be known that the optical imaging lens 3000 given by Embodiment 3 can achieve good imaging quality.

[0139] Example 4

[0140] The optical imaging lens 4000 according to Embodiment 4 of the present application is described below with reference to Figures 8-9C The structure of the optical imaging lens 4000 according to Embodiment 4 of the present application is shown. Figure 8 The structure of the optical imaging lens 4000 according to Embodiment 4 of the present application is shown.

[0141] As shown in Figure 8 , the optical imaging lens 4000 includes a barrel structure, an imaging lens group, and a plurality of spacer elements.

[0142] As shown in Figure 8As shown, the imaging lens group of the optical imaging lens 4000 includes, in order from the object side to the image side along the optical axis, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and a seventh lens E7. Among them, the first lens E1 has positive refractive power, the object side S1 is a convex surface, and the image side S2 is a concave surface. The second lens E2 has positive refractive power, the object side S3 is a convex surface, and the image side S4 is a concave surface. The third lens E3 has negative refractive power, the object side S5 is a convex surface, and the image side S6 is a concave surface. The fourth lens E4 has positive refractive power, the object side S7 is a convex surface, and the image side S8 is a convex surface. The fifth lens E5 has negative refractive power, the object side S9 is a concave surface, and the image side S10 is a convex surface. The sixth lens E6 has positive refractive power, the object side S11 is a convex surface, and the image side S12 is a concave surface. The seventh lens E7 has negative refractive power, the object side S13 is a concave surface, and the image side S14 is a convex surface. Light from the object sequentially passes through the first lens E1 to the seventh lens E7 along the direction of the first optical axis, and finally forms an image on the imaging surface (not shown).

[0143] As shown in FIG. 4A, Figure 8 As shown, the plurality of spacing elements of the optical imaging lens 4000 includes a first spacing element P1, a second spacing element P2, a third spacing element P3, a fourth spacing element P4, a fifth spacing element P5, and a sixth spacing element P6. Among them, the first spacing element P1 is arranged on the image side of the first lens E1 and at least partially contacts the first lens E1, the second spacing element P2 is arranged on the image side of the second lens E2 and at least partially contacts the second lens E2, the third spacing element P3 is arranged on the image side of the third lens E3 and at least partially contacts the third lens E3, the fourth spacing element P4 is arranged on the image side of the fourth lens E4 and at least partially contacts the fourth lens E4, the fifth spacing element P5 is arranged on the image side of the fifth lens E5 and at least partially contacts the fifth lens E5, and the sixth spacing element P6 is arranged on the image side of the sixth lens E6 and at least partially contacts the sixth lens E6. Among them, the first spacing element P1, the second spacing element P2, the third spacing element P3, the fourth spacing element P4, and the fifth spacing element P5 are spacers, and the sixth spacing element P6 is a compression ring. The above-mentioned spacing elements P1 to P6 can block the entry of external excess light, make the lens and the lens barrel better abut, and enhance the structural stability of the optical imaging lens 4000.

[0144] As shown in FIG. 4A, Figure 8 As shown, the barrel of the optical imaging lens 4000 includes a first barrel J1.

[0145] In the present example, the effective focal length f of the optical imaging lens 4000 is 6.53 mm, the total track length TTL (i.e., the distance on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface of the optical imaging lens) of the optical imaging lens 4000 is 7.48 mm, the half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens 4000 is 6.33 mm, the maximum field of view FOV of the optical imaging lens 4000 is 86.3°, and the ratio of the effective focal length f of the optical imaging lens 4000 to the entrance pupil diameter EPD of the optical imaging lens 4000 is 1.58.

[0146] Table 10 shows the basic parameter table of the imaging lens group of the optical imaging lens 4000 of Example 4, wherein the units of the curvature radius, the thickness, and the effective focal length are all millimeters (mm). Tables 11-1 and 11-2 show the high-order term coefficients of the aspherical surfaces that can be used in the optical imaging lens 4000 of Example 4, wherein each aspherical surface can be defined by the formula (1) given in Example 1 above.

[0147]

[0148] Table 10

[0149]

[0150]

[0151] Table 11-1

[0152] Face No. A18 A20 A22 A24 A26 A28 A30 S1 -1.7218E-04 1.9304E-05 -9.3755E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 -2.3125E-05 1.0973E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 -2.7093E-03 6.7140E-04 -1.0629E-04 9.7197E-06 -3.9200E-07 0.0000E+00 0.0000E+00 S4 -9.1133E-03 2.7636E-03 -5.5216E-04 6.5612E-05 -3.5181E-06 0.0000E+00 0.0000E+00 S5 6.9427E-02 -2.6069E-02 6.7586E-03 -1.1537E-03 1.1687E-04 -5.3306E-06 0.0000E+00 S6 7.3173E-03 -2.1557E-03 3.8285E-04 -3.8314E-05 1.6652E-06 0.0000E+00 0.0000E+00 S7 9.5089E-03 -2.8065E-03 5.4285E-04 -6.7077E-05 4.8216E-06 -1.5385E-07 0.0000E+00 S8 1.9929E-03 -6.3836E-04 1.3318E-04 -1.7580E-05 1.3368E-06 -4.4689E-08 0.0000E+00 S9 3.8331E-04 -4.9418E-05 3.6208E-06 -1.2710E-07 1.8680E-09 -7.0794E-11 0.0000E+00 S10 -6.1696E-04 6.8272E-05 -1.1065E-06 -8.7723E-07 1.3273E-07 -8.5417E-09 2.1661E-10 S11 -3.7571E-04 5.7481E-05 -6.4808E-06 5.2274E-07 -2.8509E-08 9.3983E-10 -1.4104E-11 S12 1.2648E-05 -1.3063E-06 9.1022E-08 -3.9488E-09 8.6388E-11 -1.2221E-13 -2.1717E-14 S13 2.1129E-06 -1.5407E-07 7.9925E-09 -2.8849E-10 6.9014E-12 -9.8618E-14 6.3884E-16 S14 6.0982E-08 -2.8925E-09 9.8760E-11 -2.3710E-12 3.8040E-14 -3.6651E-16 1.6047E-18

[0153] Table 11-2

[0154] Table 12 shows the structure parameter table of the lens barrel structure and the spacer element of the optical imaging lens 4000 of Example 4, wherein the units of the parameters in Table 12 are all millimeters (mm).

[0155] d1m D1m D2m d3m D3m D4m d5s D5s 3.920 5.241 5.504 4.140 7.400 8.100 5.600 8.400 D5m ds d0m D0s D0m EP01 CP1 EP23 8.400 4.160 9.240 8.066 10.740 1.332 0.022 0.629 CP3 EP45 L DP2 DP4 DP5 DP6 DP7 0.022 0.633 4.931 6.36 7.40 8.10 8.40 12.40 CP5 0.022

[0156] Table 12

[0157] Figure 9A The on-axis chromatic aberration curve of the optical imaging lens 4000 of Example 4 is shown, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Figure 9B The astigmatism curve of the optical imaging lens 4000 of Example 4 is shown, which represents the meridional image curvature and sagittal image curvature. Figure 9C The distortion curve of the optical imaging lens 4000 of Example 4 is shown, which represents the distortion size values corresponding to different image heights. According to the distortion curve, the distortion of the optical imaging lens 4000 of Example 4 is less than 0.1% at the image height of 0.1 mm, less than 0.05% at the image height of 0.2 mm, and less than 0.02% at the image height of 0.3 mm. Figures 9A-9CIt can be known that the optical imaging lens 4000 given in Embodiment 4 can achieve good imaging quality.

[0158] In summary, the optical imaging lenses 1001, 1002 and 1003 of Embodiment 1, the optical imaging lenses 2001, 2002 and 2003 of Embodiment 2, the optical imaging lens 3000 of Embodiment 3 and the optical imaging lens 4000 of Embodiment 4 respectively satisfy the relationships shown in Table 13.

[0159] Conditional / optical imaging lens 1001 1002 1003 2001 2002 2003 3000 4000 (D5s-d5s) / (EP45+CP5)-R8 / R9 3.87 3.87 0.57 0.42 0.42 -2.10 -0.09 -0.09 D0s / ds-R1 / R2 2.27 2.27 2.27 1.22 1.22 1.22 1.30 1.30 D2m / DP2-(R4-R3) / f2 1.07 0.86 0.86 0.66 0.88 0.88 0.77 0.77 ImgH / TD / [(D0m-d0m) / L] 3.23 3.23 3.23 11.39 10.60 10.60 11.50 2.58 D3m / (EP23+CP3)+d3m / (T23+CT3) 19.56 19.56 19.56 16.79 17.45 16.79 16.13 16.02 (DP4 / D4m + DP5 / D5m) / (CT4 + CT5) 1.43 1.46 1.52 1.87 1.92 1.95 1.82 1.82 (EP01 + CP1) / (D1m - d1m) + CT1 / T12 2.64 2.64 2.64 4.86 4.40 4.40 4.63 4.63 (DP7 - DP6) x T67 / (CT6 + CT7) 8.27 8.27 8.27 6.15 6.15 6.15 6.54 6.65

[0160] Table 13

[0161] The above description is merely preferred embodiments of the present application and the technical principles used. Those skilled in the art should understand that the scope of the application involved in the present application is not limited to the technical solutions formed by the specific combinations of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or equivalent features without departing from the inventive concept. For example, the above features are replaced with the technical features disclosed in the present application (but not limited to) having similar functions to form technical solutions.

Claims

1. An optical imaging lens, characterized in that, Comprise: an imaging lens set comprising, in order from an object side to an image side along an optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens; and a plurality of spacer elements comprising a fourth spacer element disposed on an image side of the fourth lens and at least partially in contact with the fourth lens, and a fifth spacer element disposed on an image side of the fifth lens and at least partially in contact with the fifth lens; wherein an inner diameter d5s of an object side surface of the fifth spacer element, an outer diameter D5s of the object side surface of the fifth spacer element, a spacing EP45 of the fourth spacer element and the fifth spacer element along the optical axis, a maximum thickness CP5 of the fifth spacer element, a radius of curvature R8 of an image side surface of the fourth lens, and a radius of curvature R9 of an object side surface of the fifth lens satisfy: -2.10 ≤ (D5s - d5s) / (EP45 + CP5) + R8 / R9 ≤ 3.87; the first lens has positive refractive power, an object side surface thereof is convex, and an image side surface thereof is concave; an object side surface of the second lens is convex, and an image side surface thereof is concave; the third lens has negative refractive power, and an image side surface thereof is concave; the fourth lens has positive refractive power, an object side surface thereof is convex, and an image side surface thereof is convex; the fifth lens has negative refractive power, and an object side surface thereof is concave; the sixth lens has positive refractive power, and an object side surface thereof is convex; the seventh lens has negative refractive power, and an object side surface thereof is concave; the number of lenses with refractive power in the optical imaging lens is seven; the optical imaging lens further comprises a first lens barrel for accommodating at least part of the imaging lens set or the spacer elements, and the plurality of spacer elements further comprises a first spacer element disposed on an image side of the first lens and at least partially in contact with the first lens; a spacing EP01 of a front end surface of the first lens barrel closest to an object side and the first spacer element along the optical axis, a maximum thickness CP1 of the first spacer element, an outer diameter D1m of an image side surface of the first spacer element, an inner diameter d1m of the image side surface of the first spacer element, a central thickness CT1 of the first lens along the optical axis, and an air spacing T12 of the first lens and the second lens along the optical axis satisfy: 2.63 < (EP01 + CP1) / (D1m - d1m) + CT1 / T12 < 4.87; a central thickness CT6 of the sixth lens along the optical axis, a central thickness CT7 of the seventh lens along the optical axis, an air spacing T67 of the sixth lens and the seventh lens along the optical axis, a maximum diameter DP6 of the sixth lens, and a maximum diameter DP7 of the seventh lens satisfy: 8.27 ≥ (DP7 - DP6) × T67 / (CT6 + CT7) > 6.

14. the first lens barrel has an inner wall perpendicular to the optical axis, an object side surface of the first lens is at least partially in contact with the inner wall of the first lens barrel perpendicular to the optical axis, and a mutual contact bandwidth is greater than or equal to 0.05 mm, and flatness of the inner wall of the first lens barrel perpendicular to the optical axis is less than 0.001 mm. 2.The optical imaging lens according to claim 1, wherein, ​ 3.The optical imaging lens according to claim 1, wherein, The first lens barrel has a front end surface facing an object side; wherein A minimum inner diameter ds of a front end portion of the first lens barrel facing the object side, an outer diameter D0s of the front end surface of the first lens barrel, a curvature radius R1 of an object side surface of the first lens, and a curvature radius R2 of an image side surface of the first lens satisfy: 2.27≥D0s / ds-R1 / R2>1.

21. 4.The optical imaging lens according to claim 1, wherein, The plurality of spacer elements further comprises a second spacer element disposed on an image side surface of the second lens and at least partially in contact with the second lens; An outer diameter D2m of an image side surface of the second spacer element, a maximum diameter DP2 of the second lens, a curvature radius R3 of an object side surface of the second lens, a curvature radius R4 of an image side surface of the second lens, and an effective focal length f2 of the second lens satisfy: 1.07≥D2m / DP2-(R4-R3) / f2>0.

65.

5. The optical imaging lens according to claim 1, characterized in that, The first lens barrel has a front end surface facing an object side and a rear end surface facing an imaging side, a half of a diagonal length of an effective pixel area on an imaging surface of the optical imaging lens ImgH, an on-axis distance TD from an object side surface of the first lens to an image side surface of a last lens, an outer diameter D0m of the rear end surface of the first lens barrel, an inner diameter d0m of the rear end surface of the first lens barrel, and a distance L from the front end surface of the first lens barrel to the rear end surface thereof satisfy: 11.50≥ImgH / TD / [(D0m-d0m) / L]>2.

57. 6.The optical imaging lens according to claim 1, wherein, The plurality of spacer elements further comprises a second spacer element disposed on an image side surface of the second lens and at least partially in contact with the second lens and a third spacer element disposed on an image side surface of the third lens and at least partially in contact with the third lens; An inner diameter d3m of an image side surface of the third spacer element, an outer diameter D3m of the image side surface of the third spacer element, a spacing EP23 of the second spacer element and the third spacer element along the optical axis, a maximum thickness CP3 of the third spacer element, an air spacing T23 of the second lens and the third lens on the optical axis, and a central thickness CT3 of the third lens on the optical axis satisfy: 19.56≥D3m / (EP23+CP3)+d3m / (T23+CT3)>16.

01. 7.The optical imaging lens according to claim 1, wherein, A maximum diameter DP4 of the fourth lens, a maximum diameter DP5 of the fifth lens, an outer diameter D4m of an image side surface of the fourth spacer element, an outer diameter D5m of an image side surface of the fifth spacer element, a central thickness CT4 of the fourth lens on the optical axis, and a central thickness CT5 of the fifth lens on the optical axis satisfy: 1.95≥(DP4 / D4m+DP5 / D5m) / (CT4+CT5)>1.

42. 8.The optical imaging lens according to claim 1, wherein, The optical imaging lens further comprises a second lens barrel for accommodating at least part of the imaging lens group or the spacer elements, the second lens barrel is connected to an outer side of the first lens barrel through a thread structure or a buckle structure. 9.The optical imaging lens according to claim 1, wherein, The first lens barrel has a front end surface facing an object side; The plurality of spacer elements includes a third spacer element disposed on an image side of the third lens and in at least partial contact with the third lens; and the third spacer element has at least two spacer elements between the third spacer element and the front end surface of the first lens barrel. 10.The optical imaging lens according to claim 1, wherein, The plurality of spacer elements is formed of a light-blocking material.

Images