Optical imaging lens

Abstract

The application provides an optical imaging lens, comprising seven lenses, a plurality of spacer elements and a lens barrel; the inner diameter d0s of the object side end surface of the lens barrel and the inner diameter d0m of the image side end surface of the lens barrel satisfy 1 < d0s / d0m < 2; the maximum half field angle Semi-FOV of the optical imaging lens and the F number FNO of the optical imaging lens satisfy -3 < tan (Semi-FOV) / FNO < -2; the inner diameter d1s of the object side surface of the first spacer element, the effective focal length f1 of the first lens, the inner diameter d6s of the object side surface of the sixth spacer element and the effective focal length f7 of the seventh lens satisfy -2 < d1s / f1+d6s / f7 < 0. The application solves the problem of serious stray light of the optical imaging lens in the prior art.

Description

TECHNICAL FIELD

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

[0002] With the rapid development of science and technology, small portable camera electronic equipment products are becoming more and more popular. At the same time, the market requires higher and higher imaging performance and quality of such products, especially for the ultra-wide optical imaging lens. In order to meet the demand of high image quality, more lens pieces are used, and more light entering the front end of large aperture is easy to produce stray light in the structure part of the lens barrel and the lens. At the same time, the size limitation of the rear end of the lens makes the light easy to be incident to the structure part of the lens, and finally more stray light reaches the imaging surface. Therefore, how to control the thickness of the lens of the optical imaging lens and the spacing of the spacer and the lens barrel is very important to ensure the ultra-wide angle while reducing the stray light and improving the image quality. SUMMARY

[0003] The main purpose of the present application is to provide an optical imaging lens to solve the problem of serious stray light in the prior art optical imaging lens.

[0004] In order to achieve the above purpose, according to one aspect of the present application, an optical imaging lens is provided, comprising: a lens group, the lens group sequentially comprises lenses one to seven arranged at intervals from the object side to the image side of the optical imaging lens, the optical power of the lens one, the lens two and the lens seven is negative, the optical power of the lens three, the lens five and the lens six is positive; a plurality of spacer elements, the plurality of spacer elements at least comprises a spacer element one located on the image side of the lens one and at least partially in contact with the image side of the lens one, a spacer element six located on the image side of the lens six and at least partially in contact with the lens six; a lens barrel, the lens barrel is used for accommodating the lens group and the plurality of spacer elements; wherein the inner diameter d0s of the object side end surface of the lens barrel, the inner diameter d0m of the image side end surface of the lens barrel satisfy: 1 < d0s / d0m < 2; the maximum half field angle Semi-FOV of the optical imaging lens, the F number FNO of the optical imaging lens satisfy: -3 < tan(Semi-FOV) / FNO < -2; the inner diameter d1s of the object side surface of the spacer element one, the effective focal length f1 of the lens one, the inner diameter d6s of the object side surface of the spacer element six, the effective focal length f7 of the lens seven satisfy: -2 < d1s / f1+d6s / f7 < 0.

[0005] According to another aspect of the present application, an optical imaging lens is provided, comprising: a lens set sequentially comprising lens one to lens seven arranged at intervals from the object side to the image side of the optical imaging lens, the focal power of lens one, lens two and lens seven being negative, the focal power of lens three, lens five and lens six being positive; a plurality of spacer elements, the plurality of spacer elements at least comprising spacer element one located on the image side of lens one and at least partially in contact with the image side surface of lens one, spacer element two located on the image side of lens two and at least partially in contact with the image side surface of lens two, spacer element three located on the image side of lens three and at least partially in contact with the image side surface of lens three, and spacer element six located on the image side of lens six and at least partially in contact with lens six; a lens barrel for accommodating the lens set and the plurality of spacer elements; wherein the inner diameter d0s of the object side end surface of the lens barrel and the inner diameter d0m of the image side end surface of the lens barrel satisfy: 1 < d0s / d0m < 2; the maximum half field angle Semi-FOV of the optical imaging lens and the F number FNO of the optical imaging lens satisfy: -3 < tan(Semi-FOV) / FNO < -2; the inner diameter d2s of the object side surface of spacer element two, the inner diameter d3s of the object side surface of spacer element three, the effective focal length f2 of lens two and the effective focal length f3 of lens three satisfy: -3 < (d2s+d3s) / (f2+f3) < 8. The present application provides a seven-piece optical imaging lens, which has the characteristics of ultra-wide angle under the premise of 1 < d0s / d0m < 2 and -3 < tan(Semi-FOV) / FNO < -2, the inner diameter of the object side end surface of the lens barrel is one to two times the inner diameter of the image side end surface of the lens barrel, which can ensure ultra-wide angle imaging, but a large amount of light entering the front end of the optical imaging lens at this time is easy to produce stray light, affecting the imaging effect. By controlling the effective focal lengths of lens two and lens three and the inner diameter sizes of spacer element two and spacer element three, the inner diameters of the object side end surface and the image side end surface of the lens barrel are constrained to each other, which can effectively avoid the crab leg or feather type stray light generated at the position of the diaphragm, and at the same time, the inner diameters of spacer element two and spacer element three are used to intercept unnecessary light, avoiding the incidence of light at the front end system to the non-effective diameter part of the lens, reducing the stray light formed by the reflection of light in the internal parts. It is also beneficial for the smooth transition of the structure part of lens two and lens three to the effective diameter.

[0006] According to a further aspect of the present application, an optical imaging lens is provided, comprising: a lens set sequentially comprising lens one to lens seven arranged at intervals from the object side to the image side of the optical imaging lens, the focal power of lens one, lens two and lens seven being negative, the focal power of lens three, lens five and lens six being positive; a plurality of spacer elements, the plurality of spacer elements at least comprising spacer element one located on the image side of lens one and at least partially in contact with the image side surface of lens one, and spacer element six located on the image side of lens six and at least partially in contact with lens six; a lens barrel for accommodating the lens set and the plurality of spacer elements; wherein the inner diameter d0s of the object side end surface of the lens barrel and the inner diameter d0m of the image side end surface of the lens barrel satisfy: 1 < d0s / d0m < 2; the maximum half field angle Semi-FOV of the optical imaging lens and the F number FNO of the optical imaging lens satisfy: -3 < tan(Semi-FOV) / FNO < -2; the inner diameter d6s of the object side surface of spacer element six, the effective focal length f6 of lens six and the effective focal length f7 of lens seven satisfy: -4 < d6s / (f6+f7) < 0. The present application provides a seven-piece optical imaging lens, which has the characteristics of ultra-wide angle under the premise of 1 < d0s / d0m < 2 and -3 < tan(Semi-FOV) / FNO < -2, the inner diameter of the object side end surface of the lens barrel is one to two times the inner diameter of the image side end surface of the lens barrel, which can ensure ultra-wide angle imaging, but the light rays at the rear end of the optical imaging lens are easy to be incident to the structural part of the lens to produce stray light, affecting the imaging effect. By controlling the effective focal lengths of lens six and lens seven and the inner diameter size of spacer element six, the inner diameters of the object side end surface and the image side end surface of the lens barrel are constrained to each other, which can effectively avoid the crab leg or feather type stray light generated at the position of the diaphragm, at the same time, spacer element six can intercept unnecessary light rays passing through lens six to lens seven and stray light reflected back by the rear end filter, avoid the transmission and reflection of light rays in the structural part of the lens to produce more stray light, combined with the constraint of the effective focal lengths of lens six and lens seven, which is helpful for the connection of the front and rear lens optical systems, so that the imaging quality is higher and the imaging distortion is reduced.

[0007] Further, the plurality of spacer elements further comprises spacer element three located on the image side of lens three and at least partially in contact with the image side surface of lens three, the inner diameter of spacer element three being the smallest among the inner diameters of all the spacer elements in the plurality of spacer elements, the outer diameter D3m of the image side surface of spacer element three, the inner diameter d3m of the image side surface of spacer element three, the effective focal length f3 of lens three and the effective focal length f4 of lens four satisfy: -1 < (D3m-d3m) / (f3-f4) < 0.1.

[0008] Further, the lens one is a meniscus lens, the object side surface of the lens one is a convex surface, the image side surface of the lens one is a concave surface, the inner diameter d0s of the object side end surface of the lens barrel, the outer diameter D1s of the object side surface of the spacer element one, the curvature radius R1 of the object side surface of the lens one, and the curvature radius R2 of the image side surface of the lens one satisfy: 0 < (d0s-D1s) / (R1-R2) < 0.7.

[0009] Further, the on-axis distance T12 between the lens one and the lens two, the central thickness CT1 of the lens one, and the central thickness CT2 of the lens two satisfy: 1.5 < T12 / (CT1+CT2) < 3, the outer diameter D1s of the object side surface of the spacer element one, the curvature radius R2 of the image side surface of the lens one, and the curvature radius R3 of the object side surface of the lens two satisfy: -1 < D1s / (R2-R3) < 2.

[0010] Further, the plurality of spacer elements further include a spacer element two located at the image side of the lens two and at least partially in contact with the image side surface of the lens two, and a spacer element three located at the image side of the lens three and at least partially in contact with the image side surface of the lens three, the inner diameter d2s of the object side surface of the spacer element two, the inner diameter d3s of the object side surface of the spacer element three, the effective focal length f2 of the lens two, and the effective focal length f3 of the lens three satisfy: -3 < (d2s+d3s) / (f2+f3) < 8.

[0011] Further, the plurality of spacer elements further include a spacer element three located at the image side of the lens three and at least partially in contact with the image side surface of the lens three, the outer diameter D3m of the image side surface of the spacer element three, and the inner diameter d3m of the image side surface of the spacer element three satisfy: 4mm < D3m-d3m < 8mm, the inner diameter d3s of the object side surface of the spacer element three, the inner diameter d3m of the image side surface of the spacer element three, the effective focal length f3 of the lens three, and the effective focal length f4 of the lens four satisfy: 0 < d3s / f3+d3m / f4 < 1.

[0012] Further, the plurality of spacer elements further include a spacer element three located at the image side of the lens three and at least partially in contact with the image side surface of the lens three, and a spacer element four located at the image side of the lens four and at least partially in contact with the image side surface of the lens four, the distance EP34 between the image side surface of the spacer element three and the object side surface of the spacer element four along the optical axis direction, and the central thickness CT4 of the lens four satisfy: 1 < EP34 / CT4 < 2, the outer diameter D3m of the object side surface of the spacer element three, the curvature radius R7 of the object side surface of the lens four, the curvature radius R8 of the image side surface of the lens four, and the outer diameter D4s of the object side surface of the spacer element four satisfy: -1 < D3m / R7-D4s / R8 < 1.

[0013] Further, the plurality of spacer elements further comprises a spacer element four located on the image side of the fourth lens and at least partially in contact with the image side surface of the fourth lens, a spacer element five located on the image side of the fifth lens and at least partially in contact with the image side surface of the fifth lens, and a distance EP56 between the image side surface of the spacer element five and the object side surface of the spacer element six along the optical axis direction, a central thickness CT6 of the sixth lens, a distance EP45 between the image side surface of the spacer element four and the object side surface of the spacer element five along the optical axis direction, and a central thickness CT5 of the fifth lens satisfy: 0.5 < EP56 / CT6-EP45 / CT5 < 1.5.

[0014] Further, the plurality of spacer elements further comprises a spacer element five located on the image side of the fifth lens and at least partially in contact with the image side surface of the fifth lens, and an outer diameter D5s of the object side surface of the spacer element five, an inner diameter d5s of the object side surface of the spacer element five, a curvature radius R10 of the image side surface of the fifth lens, and a curvature radius R11 of the object side surface of the sixth lens satisfy: -5 < (D5s-d5s) / (R10+R11) < 20.

[0015] Further, an inner diameter d6s of the object side surface of the spacer element six, an effective focal length f6 of the sixth lens, and an effective focal length f7 of the seventh lens satisfy: -4 < d6s / (f6+f7) < 0.

[0016] Further, an outer diameter D6m of the image side surface of the spacer element six, an inner diameter d6m of the image side surface of the spacer element six, and a central thickness CT7 of the seventh lens satisfy: 2 < (D6m-d6m) / CT7 < 10.

[0017] Further, the plurality of spacer elements further comprises a spacer element A located on the object side of the first lens and at least partially in contact with the object side surface of the first lens, and an inner diameter dAs of the object side surface of the spacer element A, an inner diameter dAm of the image side surface of the spacer element A, and an effective focal length f of the optical imaging lens satisfy: -0.5 < (dAs-dAm) / f < 1.5.

[0018] Further, the plurality of spacer elements further comprises a spacer element A located on the object side of the first lens and at least partially in contact with the object side surface of the first lens, and a maximum thickness of the spacer element A is the largest among the maximum thicknesses of all the spacer elements of the plurality of spacer elements.

[0019] Further, the inner wall surface of the lens barrel has a supporting portion protruding towards the optical axis, and an object side surface of the supporting portion at least partially supports the image side surface of the seventh lens.

[0020] Further, a distance TD between the object side surface of the first lens and the image side surface of the seventh lens along the optical axis, and an entrance pupil diameter EPD of the optical imaging lens satisfy: 5 < TD / EPD < 7, and a height L of the lens barrel and a sum ∑CP of the maximum thicknesses of all the spacer elements of the plurality of spacer elements satisfy: 7 < L / ∑CP < 9.

[0021] Further, the plurality of spacer elements further include a spacer element two located on the image side of the second lens and at least partially in contact with the image side surface of the second lens, a spacer element three located on the image side of the third lens and at least partially in contact with the image side surface of the third lens, a spacer element four located on the image side of the fourth lens and at least partially in contact with the image side surface of the fourth lens, and a spacer element five located on the image side of the fifth lens and at least partially in contact with the image side surface of the fifth lens, wherein the inner diameter d1s of the object side surface of the spacer element one, the inner diameter d2s of the object side surface of the spacer element two, and the inner diameter d3s of the object side surface of the spacer element three satisfy the relationship d1s > d2s > d3s, and the inner diameter d4s of the object side surface of the spacer element four, the inner diameter d5s of the object side surface of the spacer element five, and the inner diameter d6s of the object side surface of the spacer element six satisfy the relationship d4s < d5s < d6s.

[0022] Further, the distance EP60 from the image side surface of the spacer element six to the image side end surface of the lens barrel along the optical axis direction of the optical imaging lens, the center thickness CT7 of the seventh lens, the distance EP01 from the object side end surface of the lens barrel to the object side surface of the spacer element one along the optical axis direction, and the center thickness CT1 of the first lens satisfy the relationship -6 < EP60 / CT7 - EP01 / CT1 < 0.

[0023] The technical scheme of the present application is applied to an optical imaging lens, which comprises a lens group, a plurality of spacer elements, and a lens barrel. The lens group comprises, in sequence from the object side to the image side of the optical imaging lens, a plurality of lenses arranged at intervals, wherein the first lens, the second lens, and the seventh lens have negative focal lengths, and the third lens, the fifth lens, and the sixth lens have positive focal lengths. The plurality of spacer elements comprises at least a first spacer element located on the image side of the first lens and at least partially in contact with the image side surface of the first lens, and a sixth spacer element located on the image side of the sixth lens and at least partially in contact with the sixth lens. The lens barrel is used to accommodate the lens group and the plurality of spacer elements. The inner diameter d0s of the object side end surface of the lens barrel and the inner diameter d0m of the image side end surface of the lens barrel satisfy the relationship 1 < d0s / d0m < 2. The maximum half field angle Semi-FOV of the optical imaging lens and the F number FNO of the optical imaging lens satisfy the relationship -3 < tan(Semi-FOV) / FNO < -2. The inner diameter d1s of the object side surface of the first spacer element, the effective focal length f1 of the first lens, the inner diameter d6s of the object side surface of the sixth spacer element, and the effective focal length f7 of the seventh lens satisfy the relationship -2 < d1s / f1 + d6s / f7 < 0.

[0024] The present application provides a seven-piece optical imaging lens. On the premise that 1 < d0s / d0m < 2 and -3 < tan(Semi-FOV) / FNO < -2, the optical imaging lens has the characteristics of an ultra-wide angle. The inner diameter of the object-side end face of the lens barrel is one to two times the inner diameter of the image-side end face of the lens barrel, which can ensure ultra-wide angle imaging. However, at this time, the optical imaging lens is prone to stray light at the object-side end and the image-side end of the lens barrel, affecting the imaging effect. By controlling the effective focal lengths of lens one and lens seven and the inner diameter sizes of spacer one and spacer six, the inner diameters of spacer one and spacer six can be mutually restricted, effectively avoiding crab-leg or feather-like stray light generated at the aperture position, and being beneficial to the light reception of the front and rear optical systems. It is beneficial to avoid the light of the front-end system from entering the non-effective diameter part of the lens, and prevent the light from being reflected by the internal components to form stray light and reach the image plane to generate image noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0026] Figure 1 The partial parameter schematic diagram of the optical imaging lens according to an optional embodiment of the present invention is shown;

[0027] Figure 2 The structural schematic diagram of the optical imaging lens according to Embodiment 1 of the present invention is shown;

[0028] Figure 3 and Figure 4 The axial chromatic aberration curve and astigmatism curve of Embodiment 1 of the present invention are respectively shown;

[0029] Figure 5 The structural schematic diagram of the optical imaging lens according to Embodiment 2 of the present invention is shown;

[0030] Figure 6 The structural schematic diagram of the optical imaging lens according to Embodiment 3 of the present invention is shown;

[0031] Figure 7 The structural schematic diagram of the optical imaging lens according to Embodiment 4 of the present invention is shown;

[0032] Figure 8 and Figure 9 The axial chromatic aberration curve and astigmatism curve of Embodiment 4 of the present invention are respectively shown;

[0033] Figure 10 The structural schematic diagram of the optical imaging lens according to Embodiment 5 of the present invention is shown;

[0034] Figure 11A structure diagram of the optical imaging lens of the embodiment six of the present application is shown;

[0035] Figure 12 A structure diagram of the optical imaging lens of the embodiment seven of the present application is shown;

[0036] Figure 13 and Figure 14 The on-axis chromatic aberration curve and the astigmatism curve of the embodiment seven of the present application are shown respectively;

[0037] Figure 15 A structure diagram of the optical imaging lens of the embodiment eight of the present application is shown;

[0038] Figure 16 A structure diagram of the optical imaging lens of the embodiment nine of the present application is shown;

[0039] Figure 17 The stray light diagram of the optical imaging lens of an optional embodiment of the present application under the condition of d0s / d0m=1.2, tan(Semi-FOV) / FNO=-2.58, d1s / f1+d6s / f7=-0.86 is shown;

[0040] Figure 18 The stray light diagram of the optical imaging lens of an optional embodiment of the present application under the condition of d0s / d0m=1.2, tan(Semi-FOV) / FNO=-2.58, d1s / f1+d6s / f7=-0.85 is shown;

[0041] Figure 19 The stray light diagram of the optical imaging lens in the prior art under the condition of d0s / d0m=1.2, tan(Semi-FOV) / FNO=-2.58, d1s / f1+d6s / f7=-10 is shown;

[0042] Figure 20 The stray light diagram of the optical imaging lens in the prior art under the condition of d0s / d0m=1.2, tan(Semi-FOV) / FNO=-2.58, d1s / f1+d6s / f7=5 is shown.

[0043] Among them, the above drawings include the following reference signs:

[0044] P0, lens barrel; PA, spacer element A; E1, lens one; S1, object side surface of lens one; S2, image side surface of lens one; P1, spacer element one; E2, lens two; S3, object side surface of lens two; S4, image side surface of lens two; P2, spacer element two; E3, lens three; S5, object side surface of lens three; S6, image side surface of lens three; P3, spacer element three; E4, lens four; S7, object side surface of lens four; S8, image side surface of lens four; P4, spacer element four; E5, lens five; S9, object side surface of lens five; S10, image side surface of lens five; P5, spacer element five; E6, lens six; S11, object side surface of lens six; S12, image side surface of lens six; P6, spacer element six; E7, lens seven; S13, object side surface of lens seven; S14, image side surface of lens seven.

[0045] S12, image side surface of lens six; P6, spacer element six; E7, lens seven; S13, object side surface of lens seven; S14, image side surface of lens seven. DETAILED DESCRIPTION

[0046] It should be noted that the embodiments and features of the embodiments in the present application can be combined with each other without conflict, unless otherwise specified. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0047] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs.

[0048] In the present application, unless otherwise specified, the orientation words such as "upper", "lower", "top", "bottom" are generally directed to the directions shown in the drawings, or are directed to the vertical, perpendicular or gravity directions of the components themselves; likewise, for the convenience of understanding and description, "inner", "outer" refer to the inner and outer relative to the contour of the components themselves, but the above orientation words are not used to limit the present application.

[0049] It should be noted that, in the present specification, the expressions one, two, three, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the features. Therefore, the lens one discussed below can also be referred to as lens two or lens three without departing from the teachings of the present application.

[0050] In the drawings, the thickness, size and shape of the lenses have been slightly exaggerated for the convenience of illustration. Specifically, the shape of the spherical or aspherical surface shown in the drawings is shown by way of example. That is, the shape of the spherical or aspherical surface is not limited to the shape of the spherical or aspherical surface shown in the drawings. The drawings are merely examples and are not drawn strictly to scale.

[0051] In the present disclosure, 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 surface of each lens near the object side is the object side surface of the lens, and the surface of each lens near the image side is the image side surface of the lens. The judgment of the surface shape in the paraxial region can be based on the judgment method of those skilled in the art, and the convexity or concavity can be judged by the positive or negative value of R (R refers to the radius of curvature in the paraxial region, usually refers to the R value in the lens data of optical software). For the object side surface, when the R value is positive, it is determined to be convex, and when the R value is negative, it is determined to be concave. For the image side surface, when the R value is positive, it is determined to be concave, and when the R value is negative, it is determined to be convex.

[0052] In order to solve the problem of serious stray light of the optical imaging lens in the prior art, the present application provides an optical imaging lens.

[0053] First embodiment

[0054] As shown in the Figures 1 to 18 The optical imaging lens comprises a lens group, a plurality of spacer elements, and a lens barrel. The lens group comprises lenses 1 to 7 arranged in sequence from the object side to the image side of the optical imaging lens. The lenses 1, 2 and 7 have negative focal power, and the lenses 3, 5 and 6 have positive focal power. The plurality of spacer elements comprises at least a spacer element 1 located on the image side of the lens 1 and at least partially in contact with the image side surface of the lens 1, and a spacer element 6 located on the image side of the lens 6 and at least partially in contact with the lens 6. The lens barrel is used to accommodate the lens group and the plurality of spacer elements. The inner diameter d0s of the object side end surface of the lens barrel and the inner diameter d0m of the image side end surface of the lens barrel satisfy: 1 < d0s / d0m < 2. The maximum half field angle Semi-FOV of the optical imaging lens and the F number FNO of the optical imaging lens satisfy: -3 < tan(Semi-FOV) / FNO < -2. The inner diameter d1s of the object side surface of the spacer element 1, the effective focal length f1 of the lens 1, the inner diameter d6s of the object side surface of the spacer element 6, and the effective focal length f7 of the lens 7 satisfy: -2 < d1s / f1 + d6s / f7 < 0.

[0055] The application provides a seven-piece optical imaging lens. Under the premise of 1 < d0s / d0m < 2 and -3 < tan(Semi-FOV) / FNO < -2, the optical imaging lens has the characteristic of super wide angle, the inner diameter of the object side end surface of the lens barrel is one to two times of the inner diameter of the image side end surface of the lens barrel, and the super wide angle imaging can be ensured, but at this time, the optical imaging lens is prone to stray light at the object side end and the image side end of the lens barrel, which affects the imaging effect. By controlling the effective focal length of the first lens and the seventh lens and the inner diameter size of the first spacing element and the sixth spacing element, the inner diameters of the first spacing element and the sixth spacing element can be constrained, the crab leg or feather type stray light at the position of the diaphragm can be effectively avoided, the light rays of the optical front and rear systems can be accepted, the light rays of the front end system can be avoided from being incident on the non-effective diameter part of the lens, and the stray light formed by the reflection of the light rays on the internal parts to the image plane can be avoided.

[0056] Preferably, 1.0 < d0s / d0m < 1.9.

[0057] Preferably, -2.8 < tan(Semi-FOV) / FNO < -2.3.

[0058] Preferably, -1.5 < d1s / f1 + d6s / f7 < -0.2.

[0059] Table 1 below shows the comparison between the optical imaging lens of the prior art and the optical imaging lens of the application.

[0060]

[0061] Table 1

[0062] As shown in Table 1 and Figure 19 , under the condition of d0s / d0m = 1.2 and tan(Semi-FOV) / FNO = -2.58, the optical imaging lens of the prior art satisfies d1s / f1 + d6s / f7 = -10, and the stray light energy is large. As shown in Table 1 and Figure 20 , under the condition of d0s / d0m = 1.2 and tan(Semi-FOV) / FNO = -2.58, the optical imaging lens of the prior art satisfies d1s / f1 + d6s / f7 = 5, and also has strong stray light energy.

[0063] As shown in Table 1 and Figure 17 , under the condition of d0s / d0m = 1.2 and tan(Semi-FOV) / FNO = -2.58, the optical imaging lens of the optional embodiment of the application satisfies d1s / f1 + d6s / f7 = -0.86, and the stray light energy is weak. As shown in Table 1 and Figure 18As shown, the optical imaging lens of one optional embodiment of the present application meets d1s / f1+d6s / f7=-0.85 under the condition of d0s / d0m=1.2, tan(Semi-FOV) / FNO=-2.58, and the stray light is obviously less. Figure 19 and Figure 20 As shown in the prior art optical imaging lens, the optical imaging lens of the present application can achieve good stray light elimination effect.

[0064] In the embodiment, the plurality of spacer elements further comprises a spacer element three located on the image side of the third lens and at least partially in contact with the image side surface of the third lens, the inner diameter of the spacer element three is the smallest among the inner diameters of all the spacer elements of the plurality of spacer elements, the outer diameter D3m of the image side surface of the spacer element three, the inner diameter d3m of the image side surface of the spacer element three, the effective focal length f3 of the third lens, and the effective focal length f4 of the fourth lens satisfy: -1<(D3m-d3m) / (f3-f4)<0.1. By limiting (D3m-d3m) / (f3-f4) within a reasonable range, the relationship between the image side ring width of the spacer element three and the effective focal lengths of the third and fourth lenses is constrained, which is conducive to the connection of the two optical systems before and after the optical stop of the wide-angle optical imaging lens and the design and arrangement of the lenses. The constraint of the image side ring of the spacer element three is conducive to the bearing design and assembly of the third and fourth lenses, and improves the assembly stability of the optical imaging lens. Preferably, -0.8<(D3m-d3m) / (f3-f4)<0.5.

[0065] In the embodiment, the first lens is a meniscus lens, the object side surface of the first lens is convex, and the image side surface of the first lens is concave. The inner diameter d0s of the object side end surface of the lens barrel, the outer diameter D1s of the object side surface of the spacer element one, 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: 0<(d0s-D1s) / (R1-R2)<0.7. By limiting (d0s-D1s) / (R1-R2) within a reasonable range, the difference between the inner and outer diameters of the front end of the lens barrel and the curvature radii of the object side surface and the image side surface of the first lens are constrained, which is conducive to avoiding the lens barrel protruding at the front end due to the too small curvature of the object side surface of the first lens, avoiding damage to the object side surface of the first lens, and significantly improving the compatibility of the first lens with the entire lens part. Preferably, 0<(d0s-D1s) / (R1-R2)<0.6.

[0066] In the embodiment, the axial distance T12 between the lens one and the lens two, the central thickness CT1 of the lens one, the central thickness CT2 of the lens two satisfy: 1.5 < T12 / (CT1+CT2) < 3, the outer diameter D1s of the object side surface of the spacer element one, the curvature radius R2 of the image side surface of the lens one, the curvature radius R3 of the object side surface of the lens two satisfy: -1 < D1s / (R2-R3) < 2. By limiting T12 / (CT1+CT2) and D1s / (R2-R3) in a reasonable range, it is beneficial to reduce the risk of the image side surface of the lens one being too close to the object side surface of the lens two and interfering; at the same time, the constraint on the curvature radius of the adjacent surfaces of the lens one and the lens two gives the spacer element one reasonable space for arrangement, which is beneficial to intercept unnecessary light rays reaching the image plane through the spacer element one, and further guarantees the imaging quality of the optical imaging lens. Preferably, 1.55 < T12 / (CT1+CT2) < 2.90, -0.8 < D1s / (R2-R3) < 1.8.

[0067] In the embodiment, the plurality of spacer elements further include a spacer element two located on the image side of the lens two and at least partially in contact with the image side surface of the lens two, and a spacer element three located on the image side of the lens three and at least partially in contact with the image side surface of the lens three, the inner diameter d2s of the object side surface of the spacer element two, the inner diameter d3s of the object side surface of the spacer element three, the effective focal length f2 of the lens two, and the effective focal length f3 of the lens three satisfy: -3 < (d2s+d3s) / (f2+f3) < 8. By limiting (d2s+d3s) / (f2+f3) in a reasonable range, it is beneficial to the thickness design of the spacer element, and to intercept unnecessary light rays through the spacer element to reduce the stray light of the lens. The structure part of the lens two and the lens three can also be controlled to smoothly transition with the effective diameter. Preferably, -2.8 < (d2s+d3s) / (f2+f3) < 7.5.

[0068] In the embodiment, the plurality of spacer elements further include a spacer element three located on the image side of the lens three and at least partially in contact with the image side surface of the lens three, the outer diameter D3m of the image side surface of the spacer element three, the inner diameter d3m of the image side surface of the spacer element three satisfy: 4mm < D3m-d3m < 8mm, the inner diameter d3s of the object side surface of the spacer element three, the inner diameter d3m of the image side surface of the spacer element three, the effective focal length f3 of the lens three, and the effective focal length f4 of the lens four satisfy: 0 < d3s / f3+d3m / f4 < 1. By limiting D3m-d3m and d3s / f3+d3m / f4 in a reasonable range, it is beneficial to the design and arrangement of the spacer element three and the lens three and the lens four; at the same time, the control of the annular zone of the spacer element three is beneficial to the processing and manufacturing of the spacer element. Preferably, 4.5mm < D3m-d3m < 7.8mm, 0.1 < d3s / f3+d3m / f4 < 0.9.

[0069] In this embodiment, the plurality of spacer elements further include spacer element three located on the image side of lens three and at least partially contacting the image side surface of lens three, and spacer element four located on the image side of lens four and at least partially contacting the image side surface of lens four. The distance EP34 along the optical axis direction from the image side surface of spacer element three to the object side surface of spacer element four and the central thickness CT4 of lens four satisfy: 1 < EP34 / CT4 < 2. The outer diameter D3m of the object side surface of spacer element three, the curvature radius R7 of the object side surface of lens four, the curvature radius R8 of the image side surface of lens four, and the outer diameter D4s of the object side surface of spacer element four satisfy: -1 < D3m / R7 - D4s / R8 < 1. By limiting EP34 / CT4 and D3m / R7 - D4s / R8 within reasonable ranges, it is beneficial to avoid interference in the effective diameter regions of lens three and lens four, and controlling the outer diameters of spacer element three and spacer element four is conducive to ensuring the processability and aesthetics of the entire lens barrel. Preferably, 1.05 < EP34 / CT4 < 1.85, -0.80 < D3m / R7 - D4s / R8 < 0.98.

[0070] In this embodiment, the plurality of spacer elements further include spacer element four located on the image side of lens four and at least partially contacting the image side surface of lens four, and spacer element five located on the image side of lens five and at least partially contacting the image side surface of lens five. The distance EP56 along the optical axis direction from the image side surface of spacer element five to the object side surface of spacer element six, the central thickness CT6 of lens six, the distance EP45 along the optical axis direction from the image side surface of spacer element four to the object side surface of spacer element five, and the central thickness CT5 of lens five satisfy: 0.5 < EP56 / CT6 - EP45 / CT5 < 1.5. By limiting EP56 / CT6 - EP45 / CT5 within a reasonable range, it is beneficial to control the edge thickness ratio of the lens, improve the processability, and is also beneficial for the supporting of the structural part of the lens and the spacer element to be in a "one" form, minimizing the assembly difficulty and risk. Preferably, 0.7 < EP56 / CT6 - EP45 / CT5 < 1.5.

[0071] In the embodiment, the plurality of spacer elements further comprises a spacer element five located on the image side of the fifth lens and at least partially in contact with the image side surface of the fifth lens, wherein the outer diameter D5s of the object side surface of the spacer element five, the inner diameter d5s of the object side surface of the spacer element five, the radius of curvature R10 of the image side surface of the fifth lens, and the radius of curvature R11 of the object side surface of the sixth lens satisfy: -5 < (D5s-d5s) / (R10+R11) < 20. By limiting (D5s-d5s) / (R10+R11) within a reasonable range, while ensuring sufficient bearing area, the processing of the spacer element five is facilitated, and the reasonable inner diameter constraint of the spacer element five can effectively intercept unnecessary light transmission through the lens. The control of the radius of curvature of the fifth lens is conducive to reducing the risk of interference between the assembled lens and the spacer element. Preferably, -4 < (D5s-d5s) / (R10+R11) < 17.

[0072] In the embodiment, the inner diameter d6s of the object side surface of the sixth spacer element, the effective focal length f6 of the sixth lens, and the effective focal length f7 of the seventh lens satisfy: -4 < d6s / (f6+f7) < 0. By limiting d6s / (f6+f7) within a reasonable range, it is beneficial to intercept unnecessary light from the sixth lens to the seventh lens, and to avoid generating more stray light to affect the imaging effect. At the same time, the constraint on the effective focal lengths of the sixth and seventh lenses helps to support the front and rear lens optical systems, making the imaging quality higher and reducing imaging distortion. Preferably, -3.9 < d6s / (f6+f7) < -0.1.

[0073] In the embodiment, the outer diameter D6m of the image side surface of the sixth spacer element, the inner diameter d6m of the image side surface of the sixth spacer element, and the center thickness CT7 of the seventh lens satisfy: 2 < (D6m-d6m) / CT7 < 10. By limiting (D6m-d6m) / CT7 within a reasonable range, it is beneficial to constrain the medium thickness of the seventh lens, prevent it from being too large, reduce the risk of interference between the effective diameter area and the inner diameter of the spacer element, and avoid causing abnormal relative luminance of the image surface. At the same time, the bandwidth constraint of the sixth spacer element is beneficial to the assembly and processing of the sixth spacer element. Preferably, 2.5 < (D6m-d6m) / CT7 < 9.8.

[0074] In the embodiment, the plurality of spacer elements further include a spacer element A located on the object side of the first lens and at least partially in contact with the object side surface of the first lens, and the inner diameter dAs of the object side surface of the spacer element A, the inner diameter dAm of the image side surface of the spacer element A, and the effective focal length f of the optical imaging lens satisfy: -0.5 < (dAs-dAm) / f < 1.5. Since the spacer element A serves as the light inlet hole of the front-end lens and the fixing member of the lens, by limiting (dAs-dAm) / f within a reasonable range, it helps to avoid the length-thickness ratio of the spacer element A being too large when controlling the total amount of light of the entire optical system, and is conducive to the molding of the spacer element A; at the same time, in combination with the control of the effective focal length of the optical imaging lens, it can reduce the risk of the lens presenting a "large" end and a "small" end. Preferably, -0.3 < (dAs-dAm) / f < 1.4.

[0075] In the embodiment, the plurality of spacer elements further include a spacer element A located on the object side of the first lens and at least partially in contact with the object side surface of the first lens, and the maximum thickness of the spacer element A is the largest among the maximum thicknesses of all the spacer elements of the plurality of spacer elements. The spacer element A serves as the light inlet hole of the front-end lens and the fixing member of the lens, and controlling the maximum thickness of the spacer element A to be the largest among all the spacer elements helps to fix the internal lenses of the lens; at the same time, it helps to improve the reliability of destructive tests such as lens drop and mechanical impact.

[0076] In the embodiment, the inner wall surface of the lens barrel has a bearing portion protruding towards the optical axis, and the object side surface of the bearing portion at least partially bears against the image side surface of the seventh lens. By providing the bearing portion, it helps to demold the lens barrel after molding. It reduces the risk of the lens barrel inner diameter profile being deformed by a large demolding force, poor performance after lens assembly, and low yield.

[0077] In the embodiment, the distance TD on the optical axis from the object side surface of the first lens to the image side surface of the seventh lens, and the entrance pupil diameter EPD of the optical imaging lens satisfy: 5 < TD / EPD < 7, and the height L of the lens barrel and the sum ∑CP of the maximum thicknesses of all the spacer elements of the plurality of spacer elements satisfy: 7 < L / ∑CP < 9. By limiting TD / EPD and L / ∑CP within a reasonable range, it helps to design and arrange the lenses inside the lens barrel and tends to be "one" type, improves the assembly stability and the overall aesthetic appearance of the lens. Preferably, 5.5 < TD / EPD < 6.5, and 6.8 < L / ∑CP < 8.9.

[0078] In the embodiment, the plurality of spacer elements further include a spacer element two located on the image side of the second lens and at least partially in contact with the image side surface of the second lens, a spacer element three located on the image side of the third lens and at least partially in contact with the image side surface of the third lens, a spacer element four located on the image side of the fourth lens and at least partially in contact with the image side surface of the fourth lens, and a spacer element five located on the image side of the fifth lens and at least partially in contact with the image side surface of the fifth lens. The inner diameter d1s of the object side surface of the spacer element one, the inner diameter d2s of the object side surface of the spacer element two, and the inner diameter d3s of the object side surface of the spacer element three satisfy d1s > d2s > d3s. The inner diameter d4s of the object side surface of the spacer element four, the inner diameter d5s of the object side surface of the spacer element five, and the inner diameter d6s of the object side surface of the spacer element six satisfy d4s < d5s < d6s. By controlling d1s > d2s > d3s and d4s < d5s < d6s, the design of the internal spacer elements and the internal lenses of the wide-angle optical imaging lens is facilitated, and the noise of the image is less or even none when a high-quality image is presented.

[0079] In the embodiment, the distance EP60 from the image side surface of the spacer element six to the image side end surface of the lens barrel along the optical axis direction of the optical imaging lens, the center thickness CT7 of the seventh lens, the distance EP01 from the object side end surface of the lens barrel to the object side surface of the spacer element one along the optical axis direction, and the center thickness CT1 of the first lens satisfy -6 < EP60 / CT7 - EP01 / CT1 < 0. By limiting EP60 / CT7 - EP01 / CT1 within a reasonable range, the inner diameters of the object side end surface and the image side end surface of the lens barrel are constrained to each other, which can effectively avoid the crab leg or feather type stray light generated by the position of the diaphragm, and is also beneficial to the light acceptance of the optical front and rear systems, and is beneficial to avoiding the light incident to the non-effective diameter part of the lens in the front end system, and avoiding the stray light formed by the reflection of the light in the internal components to reach the image plane to generate image noise.

[0080] Second embodiment

[0081] As Figures 1 to 18As shown, the optical imaging lens includes a lens set, a plurality of spacer elements, a lens barrel, the lens set sequentially includes lenses one to seven arranged at intervals from the object side to the image side of the optical imaging lens, the focal power of the lens one, the lens two and the lens seven is negative, the focal power of the lens three, the lens five and the lens six is positive; the plurality of spacer elements at least includes a spacer element one located on the image side of the lens one and at least partially in contact with the image side surface of the lens one, a spacer element two located on the image side of the lens two and at least partially in contact with the image side surface of the lens two, a spacer element three located on the image side of the lens three and at least partially in contact with the image side surface of the lens three, a spacer element six located on the image side of the lens six and at least partially in contact with the lens six; the lens barrel is used to accommodate the lens set and the plurality of spacer elements; wherein the inner diameter d0s of the object side end surface of the lens barrel and the inner diameter d0m of the image side end surface of the lens barrel satisfy: 1 < d0s / d0m < 2; the maximum half field angle Semi-FOV of the optical imaging lens and the F number FNO of the optical imaging lens satisfy: -3 < tan(Semi-FOV) / FNO < -2; the inner diameter d2s of the object side surface of the spacer element two, the inner diameter d3s of the object side surface of the spacer element three, the effective focal length f2 of the lens two and the effective focal length f3 of the lens three satisfy: -3 < (d2s+d3s) / (f2+f3) < 8.

[0082] The present application provides a seven-piece optical imaging lens, under the premise of 1 < d0s / d0m < 2 and -3 < tan(Semi-FOV) / FNO < -2, the optical imaging lens has the characteristics of ultra-wide angle, the inner diameter of the object side end surface of the lens barrel is one to two times of the inner diameter of the image side end surface of the lens barrel, which can guarantee the imaging of ultra-wide angle, but at this time a large amount of light entering the front end of the optical imaging lens is easy to produce stray light, affecting the imaging effect. By controlling the effective focal length of the lens two and the lens three and the inner diameter size of the spacer element two and the spacer element three, the inner diameters of the object side end surface and the image side end surface of the lens barrel are constrained to each other, which can effectively avoid the crab leg or feather type stray light generated at the position of the diaphragm, and at the same time, the inner diameters of the spacer element two and the spacer element three are used to intercept unnecessary light, avoid the light incident to the non-effective diameter part of the lens at the front end system, and reduce the stray light formed by the reflection of the light in the internal parts. It is also beneficial to the smooth transition of the structure part of the lens two and the lens three to the effective diameter.

[0083] Preferably, 1.0 < d0s / d0m < 1.9.

[0084] Preferably, -2.8 < tan(Semi-FOV) / FNO < -2.3.

[0085] Preferably, -2.8 < (d2s+d3s) / (f2+f3) < 7.5.

[0086] The present embodiment can also include other conditional forms in the first embodiment, which will not be described one by one here.

[0087] Third Embodiment

[0088] As Figures 1 to 18 shown, the optical imaging lens includes a lens group, a plurality of spacer elements, and a lens barrel. The lens group sequentially includes Lens 1 to Lens 7 arranged at intervals from the object side to the image side of the optical imaging lens. The optical powers of Lens 1, Lens 2, and Lens 7 are negative, and the optical powers of Lens 3, Lens 5, and Lens 6 are positive; the plurality of spacer elements at least include Spacer Element 1 located on the image side of Lens 1 and at least partially contacting the image side surface of Lens 1, and Spacer Element 6 located on the image side of Lens 6 and at least partially contacting Lens 6; the lens barrel is used to accommodate the lens group and the plurality of spacer elements; wherein, the inner diameter d0s of the object-side end face of the lens barrel and the inner diameter d0m of the image-side end face of the lens barrel satisfy: 1 < d0s / d0m < 2; the maximum semi-field angle Semi-FOV of the optical imaging lens and the F number FNO of the optical imaging lens satisfy: -3 < tan(Semi-FOV) / FNO < -2; the inner diameter d6s of the object-side surface of Spacer Element 6, the effective focal length f6 of Lens 6, and the effective focal length f7 of Lens 7 satisfy: -4 < d6s / (f6 + f7) < 0.

[0089] This application provides a seven-piece optical imaging lens. On the premise of 1 < d0s / d0m < 2 and -3 < tan(Semi-FOV) / FNO < -2, the optical imaging lens has the characteristics of an ultra-wide angle. The inner diameter of the object-side end face of the lens barrel is one to two times the inner diameter of the image-side end face of the lens barrel, which can ensure ultra-wide angle imaging. However, since the light at the rear end of the optical imaging lens is easily incident on the structural part of the lens to generate stray light, affecting the imaging effect. By controlling the effective focal lengths of Lens 6 and Lens 7 and the inner diameter size of Spacer Element 6, the mutual constraint of the inner diameters of the object-side end face and the image-side end face of the lens barrel can effectively avoid the generation of crab-foot or feather-like stray light at the aperture position. At the same time, Spacer Element 6 can intercept unnecessary light from Lens 6 to Lens 7 and the stray light reflected back by the rear filter, avoiding the transmission and reflection of light in the structural part of the lens to generate more stray light. Combining the constraint on the effective focal lengths of Lens 6 and Lens 7 helps the front and rear lens optical systems to connect, making the imaging quality higher and reducing imaging distortion.

[0090] [[ID=1十二]]Preferably, 1.0 < d0s / d0m < 1.9.

[0091] Preferably, -2.8 < tan(Semi-FOV) / FNO < -2.3.

[0092] Preferably, -3.9 < d6s / (f6 + f7) < -0.1.

[0093] This embodiment may also include other conditional expressions in the first embodiment, which will not be elaborated here one by one.

[0094] Optionally, the optical imaging lens described above can further comprise a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging surface. The optical imaging lens in the present application can adopt multiple lenses, for example, the seven lenses described above. By reasonably allocating the effective focal length, surface shape, central thickness of each lens, and axial distance between each lens, etc., the aperture of the optical imaging lens can be effectively increased, the sensitivity of the lens can be reduced, and the processability of the lens can be improved, so that the optical imaging lens is more conducive to production and processing and can be applied to portable electronic devices such as smartphones.

[0095] Figure 1 The structural schematic diagram of an optical imaging lens of the present application is shown. Figure 1 The parameters d2s, d6m, D3m, etc. are also marked in the figure to clearly and intuitively understand the meaning of the parameters. In order to facilitate the display of the structure of the optical imaging lens and the specific surface shape, these parameters will not be embodied in the drawings in the subsequent description of specific embodiments.

[0096] Wherein, Dis refers to the outer diameter of the object side surface of the spacer element i, dis refers to the inner diameter of the object side surface of the spacer element i, Dim refers to the outer diameter of the image side surface of the spacer element i, dim refers to the inner diameter of the image side surface of the spacer element i, CPi refers to the maximum thickness of the spacer element i, that is, the maximum distance of the spacer element i along the optical axis direction from the object side surface to the image side surface, EPij refers to the distance along the optical axis direction between the image side surface of the spacer element i and the object side surface of the spacer element j, wherein i, j are positive integers greater than or equal to 1. And d0s is the inner diameter of the object side end surface of the lens barrel, D0m is the outer diameter of the image side end surface of the lens barrel. The maximum height L of the lens barrel P0 refers to the maximum distance along the optical axis direction from the object side end surface of the lens barrel P0 to the image side end surface of the lens barrel P0.

[0097] The specific surface shape and parameters of the optical imaging lens applicable to the above embodiments are further described below with reference to the drawings.

[0098] It should be noted that any one of the following embodiments 1 to 9 is applicable to all embodiments of the present application.

[0099] Embodiment 1

[0100] As shown in Figures 2 to 4 , the optical imaging lens of embodiment 1 of the present application is described.

[0101] As shown in Figure 2As shown, the optical imaging lens comprises, in sequence from the object side to the image side, a spacer element APA, a first lens E1, a first spacer element P1, a second lens E2, a second spacer element P2, a third lens E3, a third spacer element P3, a fourth lens E4, a fourth spacer element P4, a fifth lens E5, a sixth lens E6, a sixth spacer element P6, and a seventh lens E7. The inner wall surface of the lens barrel has a bearing portion extending towards the optical axis, and the bearing portion at least partially bears against the image side surface of the seventh lens.

[0102] As shown in Figure 2 the object side surface of the first lens is S1, the image side surface of the first lens is S2, the object side surface of the second lens is S3, the image side surface of the second lens is S4, the object side surface of the third lens is S5, the image side surface of the third lens is S6, the object side surface of the fourth lens is S7, the image side surface of the fourth lens is S8, the object side surface of the fifth lens is S9, the image side surface of the fifth lens is S10, the object side surface of the sixth lens is S11, the image side surface of the sixth lens is S12, the object side surface of the seventh lens is S13, and the image side surface of the seventh lens is S14.

[0103] Table 2 shows the basic structural parameter table of the optical imaging lens of Example 1, wherein the units of the radius of curvature, the thickness / distance, and the effective radius are all millimeters (mm).

[0104]

[0105]

[0106] Table 2

[0107] In Table 2, the object side surface S15 of the filter, the image side surface S16 of the filter, and the imaging surface S17 are also given.

[0108] In this embodiment, the second lens to the seventh lens are all aspherical lenses, and the surface type of each aspherical lens can be defined by, but is not limited to, the following aspherical formula:

[0109]

[0110] wherein x is the sag of the aspherical surface at a height of h along the optical axis, c is the paraxial curvature of the aspherical surface, c = 1 / R, i.e., the paraxial curvature c is the inverse of the radius of curvature 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 3 below gives the high-order coefficient A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28, A30 that can be used for the aspherical surface of each lens in this embodiment.

[0111]

[0112]

[0113] Table 3

[0114] Figure 3 The on-axis chromatic aberration curve of the optical imaging lens of embodiment one is shown, which represents the convergence point deviation of light rays of different wavelengths after passing through the optical imaging lens. Figure 4 The astigmatism curve of the optical imaging lens of embodiment one is shown, which represents the meridional image curvature and sagittal image curvature.

[0115] According to Figure 3 and Figure 4 it can be seen that the optical imaging lens given in embodiment one can achieve good imaging quality.

[0116] Embodiment two

[0117] The difference from embodiment one is that the parameters of the barrel P0 and the spacer element are different.

[0118] As shown in Figure 5 , the optical imaging lens of embodiment two of the present application is described. For brevity, the description of the parts similar to embodiment one will be omitted.

[0119] The curvature radius, central thickness and other parameters of the lenses one to seven of the optical imaging lens and the spacing distance between the lenses thereof in embodiment two and embodiment one are the same, as shown in Table 2 and Table 3, but at least part of the parameters such as the thickness of the barrel P0 and the spacer element, the inner diameter of the spacer element and the outer diameter of the spacer element and the distance between the spacer elements are different. Therefore, the imaging quality of the optical imaging lens of the present embodiment is as shown in Figure 3 and Figure 4 .

[0120] Embodiment three

[0121] The difference from embodiment one is that the parameters of the barrel P0 and the spacer element are different.

[0122] As shown in Figure 6 , the optical imaging lens of embodiment three of the present application is described. For brevity, the description of the parts similar to embodiment one will be omitted.

[0123] The curvature radius, central thickness and other parameters of the lenses one to seven of the optical imaging lens and the spacing distance between the lenses thereof in embodiment three and embodiment one are the same, as shown in Table 2 and Table 3, but at least part of the parameters such as the thickness of the barrel P0 and the spacer element, the inner diameter of the spacer element and the outer diameter of the spacer element and the distance between the spacer elements are different. Therefore, the imaging quality of the optical imaging lens of the present embodiment is as shown in Figure 3 and Figure 4 .

[0124] Embodiment four

[0125] The difference from the embodiment one is that the parameters of the lens barrel P0, the spacer element and the lenses are different.

[0126] As shown in Figures 7 to 9 , the optical imaging lens of the fourth embodiment of the present application is described.

[0127] As shown in Figure 7 , the optical imaging lens comprises, in order from the object side to the image side, a spacer element APA, a first lens E1, a first spacer element P1, a second lens E2, a second spacer element P2, a third lens E3, a third spacer element P3, a fourth lens E4, a fourth spacer element P4, a fifth lens E5, a sixth lens E6, a sixth spacer element P6, and a seventh lens E7. The inner wall surface of the lens barrel has a bearing portion extending towards the optical axis, and the bearing portion at least partially bears on the image side surface of the seventh lens. The first lens and the sixth lens are sequentially clamped and arranged, the spacer elements are arranged inside the clamping structure, and the structure portions between the adjacent lenses outside the clamping structure bear on each other.

[0128] As shown in Figure 7 , the object side surface of the first lens is S1, the image side surface of the first lens is S2, the object side surface of the second lens is S3, the image side surface of the second lens is S4, the object side surface of the third lens is S5, the image side surface of the third lens is S6, the object side surface of the fourth lens is S7, the image side surface of the fourth lens is S8, the object side surface of the fifth lens is S9, the image side surface of the fifth lens is S10, the object side surface of the sixth lens is S11, the image side surface of the sixth lens is S12, the object side surface of the seventh lens is S13, and the image side surface of the seventh lens is S14.

[0129] Table 4 shows the basic structure parameter table of the optical imaging lens of the fourth embodiment, wherein the units of the curvature radius, the thickness / distance, and the effective radius are all millimeters (mm).

[0130] Surface number Surface type Radius of curvature Thickness Refractive index Abbe number Effective radius OBJ Spherical Infinity Infinity S1 Spherical 11.3595 0.2200 1.49 81.56 4.1755 S2 Spherical 3.5025 1.2138 2.7391 S3 Aspherical -2.4944 0.2200 1.54 56.11 2.5883 S4 Aspherical -5.3301 0.1942 1.8630 S5 Aspherical 3.5806 0.5646 1.67 19.24 1.7179 S6 Aspherical 16.1040 0.4251 1.5097 STO Spherical Infinity 0.1326 0.6755 S7 Aspherical -24.1363 0.3448 1.56 37.32 0.7674 S8 Aspherical -24.7866 0.1000 0.9730 S9 Aspherical 2.9581 1.3405 1.54 56.11 1.4006 S10 Aspherical -3.3285 0.0922 1.5585 S11 Aspherical 3.6357 0.8286 1.66 20.37 1.6920 S12 Aspherical -16656.5556 0.6921 2.2412 S13 Aspherical -1.2657 0.3577 1.64 23.53 2.3494 S14 Aspherical -1.9918 0.1237 2.5932 S15 Aspherical Aspherical 0.2100 1.52 64.20 6.0000 S16 Spherical Infinity 0.4400 6.0000 S17 Spherical Infinity 0.0000

[0131] Table 4

[0132] In Table 4, the object side surface S15 of the filter, the image side surface S16 of the filter, and the imaging surface S17 are also given.

[0133] In this embodiment, the second lens to the seventh lens are all aspherical lenses, and the surface type of each aspherical lens can be defined by, but not limited to, the formula (1) in the first embodiment. Table 5 below gives the high-order term coefficients that can be used for the surface type of each aspherical lens in this embodiment.

[0134]

[0135]

[0136] Table 5

[0137] Spherical The on-axis chromatic aberration curve of the optical imaging lens of embodiment four is shown, which represents the convergence point deviation of light rays of different wavelengths after passing through the optical imaging lens. Infinity The astigmatism curve of the optical imaging lens of embodiment four is shown, which represents the meridional image curvature and sagittal image curvature.

[0138] According to Figure 8 and Figure 9 It can be seen that the optical imaging lens given in embodiment four can achieve good imaging quality.

[0139] Embodiment five

[0140] The difference from embodiment four is that the parameters of the barrel P0 and the spacer element are different.

[0141] As shown in Figure 8 , the optical imaging lens of embodiment five of the present application is described. For brevity, the description of the parts similar to embodiment four will be omitted.

[0142] The radius of curvature, central thickness and other parameters of the first lens to the seventh lens of the optical imaging lens and the spacing distance between the lenses in embodiment five and embodiment four are the same, as shown in Table 4 and Table 5, but at least part of the parameters such as the thickness of the barrel P0 and the spacer element, the inner diameter of the spacer element and the outer diameter of the spacer element, and the distance between the spacer elements are different. The imaging quality of the optical imaging lens of the present embodiment is as shown in Figure 9 and Figure 10 .

[0143] As shown in Figure 8 , the two adjacent lenses are directly supported by the spacer element, and the lens and the spacer element have higher forming yield and are more simple to assemble.

[0144] Embodiment six

[0145] The difference from embodiment four is that the parameters of the barrel P0 and the spacer element are different.

[0146] As shown in Figure 9 , the optical imaging lens of embodiment six of the present application is described. For brevity, the description of the parts similar to embodiment four will be omitted.

[0147] The radius of curvature, central thickness and other parameters of the first lens to the seventh lens of the optical imaging lens and the spacing distance between the lenses in embodiment six and embodiment four are the same, as shown in Table 4 and Table 5, but at least part of the parameters such as the thickness of the barrel P0 and the spacer element, the inner diameter of the spacer element and the outer diameter of the spacer element, and the distance between the spacer elements are different. The imaging quality of the optical imaging lens of the present embodiment is as shown in Figure 10 and Figure 11As shown.

[0148] As shown in the embodiment one, the optical imaging lens comprises a lens one E1, a lens two E2, a lens three E3, a lens four E4, a lens five E5, a lens six E6 and a lens seven E7. Figure 8 As shown, the lens one E1, the lens two E2, the lens three E3, the lens four E4, the lens five E5, the lens six E6 and the lens seven E7 are directly supported by the spacer element.

[0149] Embodiment seven

[0150] The difference between the embodiment one and the embodiment seven is that the parameters of the lens barrel P0, the spacer elements and the lenses are different.

[0151] As shown in the embodiment one, the optical imaging lens comprises a lens one E1, a lens two E2, a lens three E3, a lens four E4, a lens five E5, a lens six E6 and a lens seven E7. Figure 9 As shown, the optical imaging lens of the embodiment seven of the present application is described.

[0152] As shown in the embodiment one, the optical imaging lens comprises a lens one E1, a lens two E2, a lens three E3, a lens four E4, a lens five E5, a lens six E6 and a lens seven E7. Figure 11 As shown, the optical imaging lens comprises a lens one E1, a lens two E2, a lens three E3, a lens four E4, a lens five E5, a lens six E6 and a lens seven E7. The inner wall surface of the lens barrel has a supporting part extending to the optical axis, and the supporting part is at least partially supported on the image side surface of the lens seven.

[0153] As shown in the embodiment one, the optical imaging lens comprises a lens one E1, a lens two E2, a lens three E3, a lens four E4, a lens five E5, a lens six E6 and a lens seven E7. Figures 12 to 14 As shown, the object side surface of the lens one is S1, the image side surface of the lens one is S2, the object side surface of the lens two is S3, the image side surface of the lens two is S4, the object side surface of the lens three is S5, the image side surface of the lens three is S6, the object side surface of the lens four is S7, the image side surface of the lens four is S8, the object side surface of the lens five is S9, the image side surface of the lens five is S10, the object side surface of the lens six is S11, the image side surface of the lens six is S12, the object side surface of the lens seven is S13, and the image side surface of the lens seven is S14.

[0154] Table 6 shows the basic structure parameter table of the optical imaging lens of the embodiment seven, wherein the units of the curvature radius, the thickness / distance and the effective radius are millimeter mm.

[0155]

[0156]

[0157] Table 6

[0158] In Table 6, the object side surface S15 of the filter, the image side surface S16 of the filter and the imaging surface S17 are also given.

[0159] In the embodiment, the lens two to the lens seven are all aspherical lenses, and the surface type of each aspherical lens can be defined by but not limited to the formula (1) in the embodiment one. The following Table 7 gives the high order term coefficients which can be used for the surface type of each aspherical lens in the embodiment.

[0160] Figure 12 A4 A6 A8 A10 A12 A14 A16 S3 -1.8895E-02 3.9864E-02 -2.0895E-02 6.3490E-03 -1.2223E-03 1.4977E-04 -1.1218E-05 S4 -1.3033E-01 4.6085E-01 -1.9896E+00 6.6548E+00 -1.5043E+01 2.3482E+01 -2.5915E+01 S5 -8.0166E-02 7.1594E-02 -2.0712E-02 -1.0717E-02 8.7249E-03 6.1334E-03 -8.1736E-03 S6 -3.2418E-02 1.2582E-01 -1.8440E-01 -1.5217E-01 1.6522E+00 -4.6153E+00 7.7671E+00 S7 -9.2276E-02 -5.6701E-01 7.8388E+00 -6.2915E+01 2.8876E+02 -7.9008E+02 1.2703E+03 S8 -2.4008E-01 4.0804E-01 -2.4746E+00 9.7523E+00 -2.5183E+01 4.0421E+01 -3.7154E+01 S9 -1.1328E-01 1.8754E-01 -5.1941E-01 1.0788E+00 -1.6666E+00 1.9028E+00 -1.5593E+00 S10 -3.5422E-01 9.5376E-01 -2.3110E+00 4.1161E+00 -5.4020E+00 4.7762E+00 -2.4171E+00 S11 -3.3548E-01 1.3023E+00 -5.7049E+00 1.9107E+01 -4.6319E+01 8.0186E+01 -9.9833E+01 S12 1.5946E-01 -4.1829E-01 6.0100E-01 -5.3889E-01 3.3406E-01 -1.5270E-01 5.3092E-02 S13 1.1056E+00 -2.1909E+00 2.1108E+00 -1.1549E+00 3.8494E-01 -7.7944E-02 8.5390E-03 S14 1.3434E+00 -2.2778E+00 2.2935E+00 -1.5612E+00 7.4706E-01 -2.5486E-01 6.2218E-02 Figure 12 A18 A20 A22 A24 A26 A28 A30 S3 4.5797E-07 -7.0736E-09 -1.7481E-11 -2.6864E-12 6.3234E-14 0.0000E+00 0.0000E+00 S4 2.0498E+01 -1.1656E+01 4.7227E+00 -1.3300E+00 2.4734E-01 -2.7313E-02 1.3564E-03 S5 2.9338E-03 -3.3944E-04 -1.2847E-05 2.8678E-06 0.0000E+00 0.0000E+00 0.0000E+00 S6 -8.9382E+00 7.2938E+00 -4.2297E+00 1.7062E+00 -4.5528E-01 7.2246E-02 -5.1633E-03 S7 -1.1065E+03 4.0231E+02 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S8 1.5425E+01 6.9858E-01 -1.8782E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S9 8.9751E-01 -3.5441E-01 9.1798E-02 -1.4307E-02 1.2707E-03 -1.4134E-04 2.2735E-05 S10 2.0326E-01 6.5582E-01 -5.3547E-01 2.2613E-01 -5.8422E-02 8.8525E-03 -6.0905E-04 S11 8.9766E+01 -5.8140E+01 2.6810E+01 -8.5774E+00 1.8088E+00 -2.2610E-01 1.2693E-02 S12 -1.4169E-02 2.8902E-03 -4.4351E-04 4.9562E-05 -3.7962E-06 1.7714E-07 -3.7658E-09 S13 -2.1191E-04 -5.2351E-05 2.7312E-06 6.4226E-07 -9.8164E-08 6.0141E-09 -1.6884E-10 S14 -1.0817E-02 1.3201E-03 -1.1034E-04 6.1520E-06 -2.3300E-07 6.9423E-09 -1.5240E-10

[0161] Table 7

[0162] Surface number The on-axis chromatic aberration curve of the optical imaging lens of embodiment seven is shown, which represents the convergence point deviation of light rays of different wavelengths after passing through the optical imaging lens. Surface number The astigmatism curve of the optical imaging lens of embodiment seven is shown, which represents the meridional image curvature and sagittal image curvature.

[0163] According to Figure 13 and Figure 14 It can be seen that the optical imaging lens given by embodiment seven can achieve good imaging quality.

[0164] Embodiment eight

[0165] The difference from embodiment seven is that the parameters of the barrel P0 and the spacer element are different.

[0166] As Figure 13 shown, the optical imaging lens of embodiment eight of the present application is described. For brevity, the description of the parts similar to embodiment seven will be omitted.

[0167] The radius of curvature, central thickness and other parameters of the lenses one to seven of the optical imaging lens and the spacing distance between the lenses in embodiment eight and embodiment seven are the same, as shown in Table 6 and Table 7, but at least part of the parameters such as the thickness of the barrel P0 and the spacer element, the inner diameter of the spacer element, the outer diameter of the spacer element and the distance between the spacer elements are different. Therefore, the imaging quality of the optical imaging lens of the present embodiment is as shown in Figure 14 and Figure 15 .

[0168] As Figure 13 shown, the two adjacent lenses are arranged in a clamping structure, the spacer element is arranged inside the clamping structure, and the structure part of the adjacent lens outside the clamping structure directly bears.

[0169] Embodiment nine

[0170] The difference from embodiment seven is that the parameters of the barrel P0 and the spacer element are different.

[0171] As Figure 14 shown, the optical imaging lens of embodiment nine of the present application is described. For brevity, the description of the parts similar to embodiment seven will be omitted.

[0172] In Embodiment Nine and Embodiment Seven, the parameters such as the radius of curvature, center thickness, and spacing between lenses one through seven are the same, as shown in Tables 6 and 7. However, at least some parameters, such as the lens barrel P0, the thickness of the spacer element, the inner diameter and outer diameter of the spacer element, and the distance between the spacer elements, are different. Therefore, the imaging quality of the optical imaging lens in this embodiment is as follows: Figure 15 and Figure 16 As shown.

[0173] like Figure 13 As shown, except for the two lenses and the three lenses, the other lenses are all fastened together. The spacer element is located inside the fastening structure, and the structural parts of the adjacent lenses directly support each other outside the fastening structure.

[0174] In summary, Examples 1 to 9 satisfy the relationships shown in Table 8.

[0175]

[0176]

[0177] Table 8

[0178] Table 9 provides some parameters of the optical imaging lenses for Examples 1 to 9.

[0179] Figure 14 1 2 3 4 5 6 7 8 9 Figure 16 12.00 12.00 12.00 10.36 10.36 10.36 10.36 10.36 10.46 Parameter (mm) / Example 9.89 6.47 10.03 9.98 6.77 9.84 8.14 9.39 6.26 dOs 8.83 8.83 8.83 7.83 9.96 9.96 9.96 8.31 8.31 dOm 3.37 3.40 3.37 3.58 3.66 3.58 3.32 3.41 3.32 DIs 2.17 2.48 2.34 1.51 1.59 1.69 1.50 1.58 1.50 d2s 2.17 2.48 2.34 1.51 1.59 1.69 1.50 1.58 1.50 d3s 8.03 7.79 8.03 6.66 9.16 9.16 9.16 6.27 6.24 d3m 7.79 7.79 7.79 6.30 8.76 8.76 8.76 6.27 6.27 D3m 3.05 3.17 3.05 3.30 3.47 3.49 3.06 3.08 3.06 D4s 7.79 7.79 7.79 6.02 8.56 8.56 8.56 6.27 6.27 d5s 4.75 4.77 4.75 4.67 4.68 4.67 4.79 4.81 4.79 D5s 4.75 4.77 4.75 4.67 4.68 4.67 4.79 4.81 4.79 d6s 7.51 7.51 7.51 8.16 8.16 6.09 8.16 6.27 6.27 d6m 10.44 10.19 10.36 9.85 9.85 9.19 9.85 9.85 9.71 D6m 8.06 7.83 8.06 9.40 9.40 9.40 9.40 9.31 9.35 L 8.35 7.32 7.83 7.64 7.03 7.68 7.63 7.31 7.03 dAs 1.53 1.53 1.53 1.86 1.86 1.86 1.50 1.50 1.50 dAm 0.70 0.70 0.70 0.39 0.39 0.39 0.45 0.45 0.45 EP01 0.84 0.84 0.84 0.81 0.81 0.81 0.58 0.58 0.58 EP34 1.43 1.43 1.43 1.73 1.73 1.73 1.99 1.99 1.99 EP45 2.00 0.97 1.48 1.51 0.91 1.55 1.50 1.17 0.89 EP56 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 EP60 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 CP1 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 CP2 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 CP3 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 CP4 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 CP5 CP6 CPA 1.01 1.01 1.01 0.75 0.75 0.75 0.75 0.75 0.75

[0180] Table 9

[0181] Table 10 provides some optical parameters of lens one to lens seven of the optical imaging lenses of Examples 1 to 9.

[0182]

[0183]

[0184] Table 10

[0185] This application also provides an imaging device, wherein the electronic photosensitive element can be a photocoupled device (CCD) or a complementary metal oxide semiconductor device (CMOS). The imaging device can be a stand-alone imaging device such as a digital camera, or an imaging module integrated into a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens described above.

[0186] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0187] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0188] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0189] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An optical imaging lens, characterized in that, The optical imaging lens has seven lenses with optical power, including: The lens group comprises, sequentially from the object side to the image side of the optical imaging lens, lenses one to seven arranged at intervals. Lenses one, two, and seven have negative optical power, while lenses three, five, and six have positive optical power. The object side of lens one is convex, and the image side of lens one is concave. The object side of lens three is convex, and the image side of lens three is concave. The object side of lens four is concave, and the image side of lens four is convex. The object side of lens five is convex, and the image side of lens five is convex. The object side of lens six is ​​convex, and the object side of lens seven is concave, and the image side of lens seven is convex. A plurality of spacer elements, the plurality of spacer elements including at least spacer element 1 located on the image side of lens 1 and in at least partial contact with the image side of lens 1, and spacer element 6 located on the image side of lens 6 and in at least partial contact with lens 6; A lens barrel for housing the lens group and the plurality of spacer elements; Wherein, the inner diameter d0s of the object-side end face of the lens tube and the inner diameter d0m of the image-side end face of the lens tube satisfy the following relationship: 1 <d0s / d0m≤1.85; The maximum half field of view (Semi-FOV) of the optical imaging lens and the F-number (FNO) of the optical imaging lens satisfy the following condition: -2.58 ≤ tan(Semi-FOV) / FNO ≤ -2.48; The inner diameter d1s of the object side of the first spacer element, the effective focal length f1 of the first lens, the inner diameter d6s of the object side of the sixth spacer element, and the effective focal length f7 of the seventh lens satisfy the following condition: -1.23≤d1s / f1+d6s / f7≤-0.

36.

2. The optical imaging lens according to claim 1, characterized in that, The plurality of spacers also includes a spacer element three located on the image side of the lens three and in at least partial contact with the image side surface of the lens three. The inner diameter of the spacer element three is the smallest among all the inner diameters of the plurality of spacers. The outer diameter D3m of the image side surface of the spacer element three, the inner diameter d3m of the image side surface of the spacer element three, the effective focal length f3 of the lens three, and the effective focal length f4 of the lens four satisfy the following: -0.66≤(D3m-d3m) / (f3-f4)≤0.

004.

3. The optical imaging lens according to claim 1, characterized in that, The first lens is a meniscus lens, the object side of the first lens is convex, the image side of the first lens is concave, and the inner diameter d0s of the object side end face of the lens barrel, the outer diameter D1s of the object side face of the first spacer element, the radius of curvature R1 of the object side face of the first lens, and the radius of curvature R2 of the image side face of the first lens satisfy the following condition: 0 < (d0s - D1s) / (R1 - R2) ≤ 0.

55.

4. The optical imaging lens according to claim 1, characterized in that, The axial distance T12 between the first lens and the second lens, the central thickness CT1 of the first lens, and the central thickness CT2 of the second lens satisfy: 1.5 < T12 / (CT1 + CT2) ≤ 2.

76. The outer diameter D1s of the object side surface of the first spacer element, the curvature radius R2 of the image side surface of the first lens, and the curvature radius R3 of the object side surface of the second lens satisfy: -0.22 ≤ D1s / (R2 - R3) ≤ 1.

66.

5. The optical imaging lens according to claim 1, characterized in that, The plurality of spacer elements further includes a second spacer element located on the image side of the second lens and at least partially contacting the image side surface of the second lens, and a third spacer element located on the image side of the third lens and at least partially contacting the image side surface of the third lens. The inner diameter d2s of the object side surface of the second spacer element, the inner diameter d3s of the object side surface of the third spacer element, the effective focal length f2 of the second lens, and the effective focal length f3 of the third lens satisfy: -2.45 ≤ (d2s + d3s) / (f2 + f3) ≤ 7.

09.

6. The optical imaging lens according to claim 1, characterized in that, The plurality of spacer elements further includes a third spacer element located on the image side of the third lens and at least partially contacting the image side surface of the third lens. The outer diameter D3m and the inner diameter d3m of the image side surface of the third spacer element satisfy: 4.69 mm ≤ D3m - d3m ≤ 7.66 mm. The inner diameter d3s of the object side surface of the third spacer element, the inner diameter d3m of the image side surface of the third spacer element, the effective focal length f3 of the third lens, and the effective focal length f4 of the fourth lens satisfy: 0.23 ≤ d3s / f3 + d3m / f4 ≤ 0.

73.

7. The optical imaging lens according to claim 1, characterized in that, The plurality of spacer elements further includes a third spacer element located on the image side of the third lens and at least partially contacting the image side surface of the third lens, and a fourth spacer element located on the image side of the fourth lens and at least partially contacting the image side surface of the fourth lens. The distance EP34 from the image side surface of the third spacer element to the object side surface of the fourth spacer element along the optical axis direction of the optical imaging lens and the central thickness CT4 of the fourth lens satisfy: 1.13 ≤ EP34 / CT4 ≤ 1.

75. The outer diameter D3m of the object side surface of the third spacer element, the curvature radius R7 of the object side surface of the fourth lens, the curvature radius R8 of the image side surface of the fourth lens, and the outer diameter D4s of the object side surface of the fourth spacer element satisfy: -0.03 ≤ D3m / R7 - D4s / R8 < 1.

8. The optical imaging lens according to claim 1, characterized in that, The plurality of spacers further includes a spacer fourth located on the image side of the lens fourth and in at least partial contact with the image side of the lens fourth, and a spacer fifth located on the image side of the lens fifth and in at least partial contact with the image side of the lens fifth. The distance EP56 between the image side of the spacer fifth and the object side of the spacer sixth along the optical axis direction, the center thickness CT6 of the lens sixth, the distance EP45 between the image side of the spacer fourth and the object side of the spacer fifth along the optical axis direction, and the center thickness CT5 of the lens fifth satisfy the following: 0.99≤EP56 / CT6-EP45 / CT5<1.

5.

9. The optical imaging lens according to claim 1, characterized in that, The plurality of spacers also includes a spacer element five located on the image side of the lens five and in at least partial contact with the image side surface of the lens five. The outer diameter D5s of the object side surface of the spacer element five, the inner diameter d5s of the object side surface of the spacer element five, the radius of curvature R10 of the image side surface of the lens five, and the radius of curvature R11 of the object side surface of the lens six satisfy the following: -3.72≤(D5s-d5s) / (R10+R11)≤16.

57.

10. The optical imaging lens according to claim 1, characterized in that, The inner diameter d6s of the object side of the spacer element six, the effective focal length f6 of the lens six, and the effective focal length f7 of the lens seven satisfy the following condition: -3.83≤d6s / (f6+f7)≤-0.

19.

11. The optical imaging lens according to claim 1, characterized in that, The outer diameter D6m of the image side of the spacer element six, the inner diameter d6m of the image side of the spacer element six, and the center thickness CT7 of the lens seven satisfy the following condition: 3.57≤(D6m-d6m) / CT7≤9.

76.

12. The optical imaging lens according to claim 1, characterized in that, The plurality of spacers also includes a spacer A located on the object side of the first lens and in at least partial contact with the object side surface of the first lens. The inner diameter dAs of the object side surface of the spacer A, the inner diameter dAm of the image side surface of the spacer A, and the effective focal length f of the optical imaging lens satisfy the following: -0.1≤(dAs-dAm) / f≤1.

11.

13. The optical imaging lens according to any one of claims 1 to 12, characterized in that, The plurality of spacers also includes a spacer A located on the object side of the first lens and in at least partial contact with the object side surface of the first lens, wherein the maximum thickness of spacer A is the greatest among the maximum thicknesses of all spacers in the plurality of spacers.

14. The optical imaging lens according to any one of claims 1 to 12, characterized in that, The inner wall of the lens barrel has a support portion extending toward the optical axis of the optical imaging lens, and the object side of the support portion at least partially abuts against the image side of the lens.

15. The optical imaging lens according to any one of claims 1 to 12, characterized in that, The distance TD between the object side of lens one and the image side of lens seven on the optical axis of the optical imaging lens, and the entrance pupil diameter EPD of the optical imaging lens satisfy the following: 5.97≤TD / EPD≤6.

24. The height L of the lens barrel and the sum of the maximum thicknesses of all the spacers ∑CP satisfy the following: 6.48≤L / ∑CP≤8.

83.

16. The optical imaging lens according to any one of claims 1 to 12, characterized in that, The plurality of spacers further includes spacer 2 located on the image side of lens 2 and at least partially in contact with the image side of lens 2, spacer 3 located on the image side of lens 3 and at least partially in contact with the image side of lens 3, spacer 4 located on the image side of lens 4 and at least partially in contact with the image side of lens 4, and spacer 5 located on the image side of lens 5 and at least partially in contact with the image side of lens 5. The inner diameter d1s of the object side of spacer 1, the inner diameter d2s of the object side of spacer 2, and the inner diameter d3s of the object side of spacer 3 satisfy: d1s>d2s>d3s. The inner diameter d4s of the object side of spacer 4, the inner diameter d5s of the object side of spacer 5, and the inner diameter d6s of the object side of spacer 6 satisfy: d4s>d2s>d3s. <d5s<d6s。 17. The optical imaging lens according to any one of claims 1 to 12, characterized in that, The distance EP60 from the image side of the spacer element six to the image side end face of the lens barrel along the optical axis, the center thickness CT7 of the lens seven, the distance EP01 from the object side end face of the lens barrel to the object side of the spacer element one along the optical axis, and the center thickness CT1 of the lens one satisfy the following: -6 <EP60 / CT7-EP01 / CT1<0。

Images