Optical imaging lens

Abstract

The invention relates to an optical imaging lens, and the lens comprises a first optical assembly which comprises a first lens cone, a first lens, a second lens, a third lens, and a fourth lens; the second optical assembly comprises a second lens barrel, a fifth lens, a sixth lens, a seventh lens and an eighth lens, and the second lens barrel is adjustably arranged on the image side of the first lens barrel; and at least one spacer including a fifth spacer; the optical imaging lens satisfies the following relational expressions:-3.3 < d5s / R9 <-2.75; and-2.4 < d5m / R10 <-1.75; wherein R9 is the curvature radius of the object side surface of the fifth lens, R10 is the curvature radius of the image side surface of the fifth lens, d5s is the inner diameter of the object side surface of the fifth spacer, and d5m is the inner diameter of the image side surface of the fifth spacer. The optical imaging lens can meet the large image surface design; and the height reduction requirement can be met structurally.

Description

Technical Field

[0001] The present invention relates to the technical field of optical elements, and in particular to an optical imaging lens. Background Art

[0002] With the popularity of mobile phones, mobile phone cameras are gradually replacing professional camera equipment such as SLR cameras due to their convenience and speed. However, due to the limitation of the internal space of mobile phones, the main camera lens of mobile phones needs a new structure to meet the demand for lowering the lens height; in addition, as the image surface of the main camera is getting larger and larger, the design of the traditional main camera lens cannot meet the performance requirements in the macro state, and the lens with a large image surface needs to design other solutions to improve the macro performance.

[0003] Currently, traditional mobile phone main cameras can meet the needs of large image planes by stretching the light height, but this can easily cause the light to form a blurred image on the image plane, resulting in blurry images and light leakage.

[0004] Currently, the best shooting focal length of SLR cameras is 28mm to 35mm, but the traditional mobile phone main camera lens cannot meet this shooting focal length, so it is necessary to extend the shooting focal length of the mobile phone main camera lens. Summary of the invention

[0005] Based on this, it is necessary to provide an optical imaging lens to address the problem that existing mobile phone main camera lenses cannot meet the requirements of large image surfaces.

[0006] An optical imaging lens, comprising:

[0007] A first optical assembly, the first optical assembly comprising a first lens barrel, a first lens, a second lens, a third lens and a fourth lens, the first lens, the second lens, the third lens and the fourth lens being sequentially arranged in the first lens barrel along an optical path from an object side to an image side; and

[0008] a second optical assembly, the second optical assembly comprising a second lens barrel, a fifth lens, a sixth lens, a seventh lens, and an eighth lens, the second lens barrel being adjustably disposed on the image side of the first lens barrel, the fifth lens, the sixth lens, the seventh lens, and the eighth lens being sequentially disposed in the second lens barrel along an optical path from the object side to the image side; and

[0009] at least one spacer, the spacers comprising a fifth spacer, the fifth spacer being disposed between the fifth lens and the sixth lens and in direct contact with the image side surface of the fifth lens;

[0010] The optical imaging lens satisfies the relationship:

[0011] -3.3<d5s / R9<-2.75; and

[0012] -2.4<d5m / R10<-1.75;

[0013] Among them, R9 is the curvature radius of the object side surface of the fifth lens, R10 is the curvature radius of the image side surface of the fifth lens, d5s is the inner diameter of the object side surface of the fifth spacer, and d5m is the inner diameter of the image side surface of the fifth spacer.

[0014] In one embodiment, the optical imaging lens satisfies the relationship:

[0015] -6.35<f5 / (EP205+CT5)<-4.15;

[0016] Wherein, f5 is the effective focal length of the fifth lens, CT5 is the center thickness of the fifth lens on the optical axis, and EP205 is the interval between the object side end surface of the second lens barrel and the fifth spacer.

[0017] In one embodiment, the spacer further includes a first spacer disposed between the first lens and the second lens, the first spacer being in direct contact with the image side surface of the first lens;

[0018] The optical imaging lens satisfies the relationship:

[0019] -2.2<R1 / d1s<-1.8;

[0020] Wherein, R1 is the curvature radius of the object side surface of the first lens, and d1s is the inner diameter of the object side surface of the first spacer.

[0021] In one embodiment, the spacer further includes a first spacer disposed between the first lens and the second lens, the first spacer being in direct contact with the image side surface of the first lens;

[0022] The optical imaging lens satisfies the relationship:

[0023] -7.85<R2 / (D1m-d1m)<-3.35;

[0024] Wherein, d1m is the inner diameter of the image side surface of the first spacer, D1m is the outer diameter of the image side surface of the first spacer, and R2 is the curvature radius of the image side surface of the first lens.

[0025] In one embodiment, the spacer further includes a first spacer disposed between the first lens and the second lens and a second spacer disposed between the second lens and the third lens, the first spacer directly contacts the image side surface of the first lens, and the second spacer directly contacts the image side surface of the second lens;

[0026] The optical imaging lens satisfies the relationship:

[0027] 1.30mm -1 <EP12 / (f1*T12)<2.95mm -1 ;

[0028] Wherein, f1 is the effective focal length of the first lens, T12 is the air distance between the first lens and the second lens on the optical axis, and EP12 is the distance between the first spacer and the second spacer.

[0029] In one embodiment, the spacer further includes a first spacer disposed between the first lens and the second lens, the first spacer being in direct contact with the image side surface of the first lens;

[0030] The optical imaging lens satisfies the relationship:

[0031] 0.75<(CT1+CP1) / EP01<1.85;

[0032] Wherein, CP1 is the maximum thickness of the first spacer, CT1 is the center thickness of the first lens on the optical axis, and EP01 is the distance between the object side end surface of the first lens barrel and the first spacer.

[0033] In one embodiment, the spacer further includes a third spacer disposed between the third lens and the fourth lens, and the third spacer is in direct contact with the image side surface of the third lens;

[0034] The optical imaging lens satisfies the relationship:

[0035] 8.4<R6 / (D3s-d3s)<16.5;

[0036] Wherein, D3s is the outer diameter of the object side surface of the third spacer, d3s is the inner diameter of the object side surface of the third spacer, and R6 is the curvature radius of the image side surface of the third lens.

[0037] In one embodiment, the spacer further includes a second spacer disposed between the second lens and the third lens and a third spacer disposed between the third lens and the fourth lens, the second spacer is in direct contact with the image side surface of the second lens; the third spacer is in direct contact with the image side surface of the third lens;

[0038] The optical imaging lens satisfies the relationship:

[0039] -11.25<R5 / (d2s*N3)<-5.30;

[0040] Wherein, R5 is the curvature radius of the object side surface of the third lens, d2s is the inner diameter of the object side surface of the second spacer, and N3 is the refractive index of the third lens.

[0041] In one embodiment, the spacer further includes a third spacer disposed between the third lens and the fourth lens, and the third spacer is in direct contact with the image side surface of the third lens;

[0042] The optical imaging lens satisfies the relationship:

[0043] 1.25<R7 / d3m<1.55;

[0044] Wherein, R7 is the curvature radius of the object side surface of the fourth lens, and d3m is the inner diameter of the image side surface of the third spacer.

[0045] In one embodiment, the optical imaging lens satisfies the relationship:

[0046] -10.55<R8 / |d10m-D20s|<-4.95;

[0047] Wherein, R8 is the curvature of the image side surface of the fourth lens, d10m is the inner diameter of the image side end surface of the first lens barrel closest to the imaging surface, and D20s is the outer diameter of the object side end surface of the second lens barrel closest to the object side.

[0048] In one embodiment, the spacer further includes a sixth spacer disposed between the sixth lens and the seventh lens, and the sixth spacer is in direct contact with the image side surface of the sixth lens;

[0049] The optical imaging lens satisfies the relationship:

[0050] 1.30<(T56+CT6) / EP56<2.85;

[0051] Wherein, T56 is the air spacing between the fifth lens and the sixth lens on the optical axis, CT6 is the center thickness of the sixth lens on the optical axis, and EP56 is the spacing between the fifth spacer and the sixth spacer.

[0052] In one embodiment, the spacer further includes a sixth spacer disposed between the sixth lens and the seventh lens, and the sixth spacer is in direct contact with the image side surface of the sixth lens; the optical imaging lens satisfies the relationship:

[0053] 0.35<(R11*D5m) / (R12*D6s)<1.05;

[0054] Among them, R11 is the curvature radius of the object side surface of the sixth lens, R12 is the curvature radius of the image side surface of the sixth lens, D5m is the outer diameter of the image side surface of the fifth spacer, and D6s is the outer diameter of the object side surface of the sixth spacer.

[0055] In one embodiment, the spacer further includes a sixth spacer disposed between the sixth lens and the seventh lens and a seventh spacer disposed between the seventh lens and the eighth lens, the sixth spacer is in direct contact with the image side surface of the sixth lens; the seventh spacer is in direct contact with the image side surface of the seventh lens;

[0056] The optical imaging lens satisfies the relationship:

[0057] 0.75<EP67 / T67<2.7;

[0058] Wherein, EP67 is the interval between the sixth spacer and the seventh spacer, and T67 is the air interval between the sixth lens and the seventh lens on the optical axis.

[0059] In one embodiment, the spacer further includes a seventh spacer disposed between the seventh lens and the eighth lens, and the seventh spacer is in direct contact with the image side surface of the seventh lens;

[0060] The optical imaging lens satisfies the relationship:

[0061] -6.65<R15 / (D7s-d7s)<-1.85;

[0062] Wherein, D7s is the outer diameter of the object side surface of the seventh spacer, d7s is the inner diameter of the object side surface of the seventh spacer, and R15 is the curvature radius of the object side surface of the eighth lens.

[0063] In one embodiment, the first lens has positive optical power, the second lens has positive optical power or negative optical power, the third lens has negative optical power, the fourth lens has positive optical power, the fifth lens has negative optical power, the sixth lens has positive optical power or negative optical power, the seventh lens has positive optical power or negative optical power, and the eighth lens has positive optical power or negative optical power.

[0064] In one embodiment, the object side surface and the image side surface of the first lens are concave and convex surfaces respectively, the object side surface and the image side surface of the second lens are convex and concave surfaces respectively, the object side surface and the image side surface of the third lens are concave and concave surfaces respectively, the object side surface and the image side surface of the fourth lens are convex and convex surfaces respectively, the object side surface and the image side surface of the fifth lens are concave and convex surfaces respectively, the object side surface and the image side surface of the sixth lens are convex and concave surfaces respectively, the object side surface and the image side surface of the seventh lens are concave and convex surfaces respectively, and the object side surface and the image side surface of the eighth lens are concave and concave surfaces respectively.

[0065] In one embodiment, the spacer further includes a sixth spacer disposed between the sixth lens and the seventh lens and a seventh spacer disposed between the seventh lens and the eighth lens, the sixth spacer is in direct contact with the image side surface of the sixth lens, and the seventh spacer is in direct contact with the image side surface of the seventh lens; the optical imaging lens satisfies the relationship:

[0066] 0.75<(R13 / d6m)*(R14 / d7s)<2.65;

[0067] Among them, R13 is the curvature radius of the object side surface of the seventh lens, R14 is the curvature radius of the image side surface of the seventh lens, d6m is the inner diameter of the image side surface of the sixth spacer, and d7s is the inner diameter of the object side surface of the seventh spacer.

[0068] In one embodiment, the optical imaging lens satisfies the relationship:

[0069] 2.40<L10 / CT4<2.90; and

[0070] 2.35<f4 / CT4<2.75;

[0071] Wherein, L10 is the maximum height of the first lens barrel, CT4 is the center thickness of the fourth lens on the optical axis, and f4 is the effective focal length of the fourth lens.

[0072] In one embodiment, the spacer further includes a sixth spacer disposed between the sixth lens and the seventh lens and a seventh spacer disposed between the seventh lens and the eighth lens, the sixth spacer is in direct contact with the image side surface of the sixth lens, and the seventh spacer is in direct contact with the image side surface of the seventh lens; the optical imaging lens satisfies the relationship:

[0073] 1.15<T78 / EP67<3.05; and

[0074] 2.7<T78 / CT8<3.3;

[0075] Wherein, T78 is the air spacing between the seventh lens and the eighth lens on the optical axis, CT8 is the center thickness of the eighth lens on the optical axis, and EP67 is the spacing between the sixth spacer and the seventh spacer.

[0076] The optical imaging lens is an eight-element internal focus lens. By controlling the curvature radius of the object side and image side of the fifth lens, the light height can be raised to meet the design requirements of a large image surface. The fifth spacer can intercept light to converge light, so that the light can be transmitted normally and clearly imaged on the image surface, avoiding blurry images and light leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0077] Figure 1A A schematic structural diagram of an optical imaging lens provided for a first example of the first embodiment of the present application;

[0078] Figure 1B A schematic structural diagram of an optical imaging lens provided for a second example of the first embodiment of the present application;

[0079] Figure 1C A schematic diagram showing the dimensions of the optical imaging lens according to the first embodiment of the present application is shown;

[0080] Figure 2A shows an axial chromatic aberration curve diagram of the optical imaging lens according to the first embodiment of the present application;

[0081] Figure 2B shows an astigmatism curve diagram of the optical imaging lens according to the first embodiment of the present application;

[0082] Figure 2C shows a distortion curve diagram of the optical imaging lens according to the first embodiment of the present application;

[0083] Figure 2D shows a magnification chromatic aberration curve diagram of the optical imaging lens according to the first embodiment of the present application;

[0084] Figure 3A A schematic structural diagram of an optical imaging lens provided for a first example of a second embodiment of the present application;

[0085] Figure 3B A schematic structural diagram of an optical imaging lens provided for a second example of the second embodiment of the present application;

[0086] Figure 4A shows an on-axis chromatic aberration curve diagram of the optical imaging lens according to the second embodiment of the present application;

[0087] Figure 4B shows an astigmatism curve diagram of the optical imaging lens according to the second embodiment of the present application;

[0088] Figure 4C shows a distortion curve diagram of the optical imaging lens according to the second embodiment of the present application;

[0089] Figure 4D shows a magnification chromatic aberration curve diagram of the optical imaging lens according to the second embodiment of the present application;

[0090] Figure 5A A schematic structural diagram of an optical imaging lens provided for a first example of a third embodiment of the present application;

[0091] Figure 5B A schematic structural diagram of an optical imaging lens provided for a second example of the third embodiment of the present application;

[0092] Fig. 6A shows an axial chromatic aberration curve diagram of the optical imaging lens according to the third embodiment of the present application;

[0093] Figure 6B shows an astigmatism curve diagram of the optical imaging lens according to the third embodiment of the present application;

[0094] Figure 6C shows a distortion curve diagram of the optical imaging lens according to the third embodiment of the present application;

[0095] Fig.6D shows a magnification chromatic aberration curve diagram of the optical imaging lens according to the third embodiment of the present application;

[0096] Fig. 7A A schematic structural diagram of an optical imaging lens provided for a first example of a fourth embodiment of the present application;

[0097] Figure 7B A schematic structural diagram of an optical imaging lens provided for a second example of the fourth embodiment of the present application;

[0098] Fig. 8A shows an axial chromatic aberration curve diagram of the optical imaging lens according to the fourth embodiment of the present application;

[0099] Figure 8B shows an astigmatism curve diagram of the optical imaging lens according to the fourth embodiment of the present application;

[0100] Figure 8C shows a distortion curve diagram of the optical imaging lens according to the fourth embodiment of the present application;

[0101] Fig.8D shows a magnification chromatic aberration curve diagram of the optical imaging lens according to the fourth embodiment of the present application;

[0102] Fig. 9A The MTF diagram when the optical imaging lens according to the above embodiment of the present application satisfies the relationship d5s / R9=-3.13 and d5m / R10=-2.38 is shown;

[0103] Fig. 9B The MTF diagram when the optical imaging lens according to the above embodiment of the present application satisfies the relationship d5s / R9=-3.13 and d5m / R10=-2.38 is shown;

[0104] Fig. 9C The MTF diagram is shown when the optical imaging lens according to the above embodiment of the present application satisfies the relationship d5s / R9=-3.13 and d5m / R10=-2.38.

[0105] Figure markings: E1, first lens; E2, second lens; E3, third lens; E4, fourth lens; E5, fifth lens; E6, sixth lens; E7, seventh lens; E8, eighth lens; P1, first spacer; P1b, first front auxiliary spacer; P1c, first rear auxiliary spacer; P2, second spacer; P3, third spacer; P3b, third front auxiliary spacer; P3c, third rear auxiliary spacer; P10, first lens barrel; P20, second lens barrel; P5, fifth spacer; P5b, fifth front auxiliary spacer; P5c, fifth rear auxiliary spacer; P6, sixth spacer; P6b, sixth auxiliary spacer; P7, seventh spacer; P7b, seventh auxiliary spacer. DETAILED DESCRIPTION

[0106] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0107] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0108] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0109] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0110] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0111] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0112] In an exemplary embodiment, the outer peripheral surface of at least one of the spacer elements in the spacer element group may have a trimmed portion and a non-trimmed portion, and the outer diameter of the trimmed portion of the spacer element may be smaller than the outer diameter of the non-trimmed portion of the spacer element. When the outer peripheral surface of the spacer element has a trimmed portion, the outer diameter of the spacer element generally refers to the outer diameter of the non-trimmed portion of the spacer element. For example, the outer diameter of the object side surface of the spacer element refers to the outer diameter of the portion of the non-trimmed portion of the spacer element closest to the object side, and the outer diameter of the image side surface of the spacer element refers to the outer diameter of the portion of the non-trimmed portion of the spacer element closest to the image side.

[0113] In the present invention, the given optical implementation can be restored by simulation using optical software such as zemax, codev, etc., wherein the optical software is preferably codev, and the optical surface type can be adjusted according to the surface model provided by the corresponding software to adapt to the optical imaging lens of the present invention.

[0114] Based on the problem that the existing main camera lenses of mobile phones cannot meet the requirements of large image planes, the present application provides an optical imaging lens, which can meet the requirements of large image plane design and can also meet the requirements of height reduction in structure.

[0115] For details, please refer to Figures 1A to 1C The optical imaging lens comprises a first optical component, a second optical component and at least one spacer, wherein the first optical component comprises a first lens barrel, a first lens E1, a second lens E2, a third lens E3 and a fourth lens E4, wherein the first lens E1, the second lens E2, the third lens E3 and the fourth lens E4 are sequentially arranged in the first lens barrel along the optical path from the object side to the image side. The second optical component comprises a second lens barrel, a fifth lens E5, a sixth lens E6, a seventh lens E7 and an eighth lens E8, wherein the second lens barrel is adjustably arranged on the image side of the first lens barrel, wherein the fifth lens E5, the sixth lens E6, the seventh lens E7 and the eighth lens E8 are sequentially arranged in the second lens barrel along the optical path from the object side to the image side; and the spacer comprises a fifth spacer P5, wherein the fifth spacer P5 is arranged between the fifth lens E5 and the sixth lens E6, and directly contacts the image side surface of the fifth lens E5. The optical imaging lens satisfies the relationship: -3.3<d5s / R9<-2.75 and -2.4<d5m / R10<-1.75; wherein R9 is the curvature radius of the object side surface of the fifth lens, R10 is the curvature radius of the image side surface of the fifth lens, d5s is the inner diameter of the object side surface of the fifth spacer, and d5m is the inner diameter of the image side surface of the fifth spacer.

[0116] It can be understood that the optical imaging lens is an eight-piece internal focusing lens, and focusing can be achieved by moving the second lens barrel. The optical imaging lens is designed according to the above relationship, which can converge light and form an image. The fifth lens E5 is the first lens in the second optical component. Controlling the radius of curvature of the object side of the fifth lens E5 can converge light, and controlling the radius of curvature of the image side of the fifth lens E5 can diverge light, thereby raising the height of the light and meeting the design requirements of a large image surface. The fifth spacer P5 can block light to converge light, so that light can be transmitted normally and clearly imaged on the image plane, avoiding blurry images and light leakage problems.

[0117] like Fig. 9A The figure shows the MTF graph when the optical imaging lens satisfies the relationship d5s / R9=-3.13 and d5m / R10=-2.38, wherein the cutoff frequencies of the optical imaging lens are 110lp / mm and 220lp / mm respectively, and the meridian direction TAN and the sagittal direction SAG show a trend of smoothly decreasing from the center to both sides within the range of the actual image height (REAL IMAGE HEIGHT) of -5mm to 5mm, and the curve has no pits and no steep drops. Therefore, when the optical imaging lens satisfies the relationship -3.3<d5s / R9<-2.75 and -2.4<d5m / R10<-1.75, the optical imaging lens has good imaging quality. Fig. 9B The figure shows the MTF graph of the optical imaging lens when it satisfies the relationship d5s / R9=-3.61 and d5m / R10=-2.54, wherein the cutoff frequencies of the optical imaging lens are 110lp / mm and 220lp / mm respectively, the meridian direction TAN and the sagittal direction SAG only show a downward trend from the center to both sides within the actual image height range of -5mm to 5mm, but the overall curve is not smooth and has many pits. Therefore, when the optical imaging lens is smaller than the range set by the relationship -3.3<d5s / R9<-2.75 and -2.4<d5m / R10<-1.75, the imaging quality of the optical imaging lens is poor. Fig. 9C The figure shows the MTF diagram when the optical imaging lens satisfies the relationship d5s / R9=-2.43 and d5m / R10=-1.42, wherein when the cutoff frequencies of the optical imaging lens are 110lp / mm and 220lp / mm respectively, the meridian direction TAN and the sagittal direction SAG only show a decreasing trend from the center to both sides within the range of the actual image height of -5mm to 5mm, but the overall curve is not smooth and has multiple steep drops. Therefore, when the optical imaging lens is greater than the range set by the relationship -3.3<d5s / R9<-2.75 and -2.4<d5m / R10<-1.75, the imaging quality of the optical imaging lens is poor.

[0118] Alternatively, if Figure 1A , Figure 1B and Figure 1C As shown, in one embodiment, the optical imaging lens satisfies the relationship -6.35<f5 / (EP205+CT5)<-4.15. Wherein, f5 is the effective focal length of the fifth lens E5, CT5 is the center thickness of the fifth lens E5 on the optical axis, and EP205 is the distance between the object side end surface of the second lens barrel and the fifth spacer P5.

[0119] By designing the optical imaging lens according to the above relationship, the profile of the fifth lens E5 can be clarified, so that the fifth lens E5 has a light divergence effect, thereby further increasing the height of the light entering the second optical component to meet the design requirements of a large image surface.

[0120] Alternatively, if Figure 1A , Figure 1B and Figure 1C As shown, in one embodiment, the spacer further includes a first spacer P1 disposed between the first lens E1 and the second lens E2, and the first spacer P1 is in direct contact with the image side surface of the first lens E1. The optical imaging lens satisfies the relationship -2.2<R1 / d1s<-1.8. Wherein, R1 is the curvature radius of the object side surface of the first lens E1, and d1s is the inner diameter of the object side surface of the first spacer P1.

[0121] By designing the optical imaging lens according to the above relationship, the sizes of the object side surface and the image side surface of the first lens E1 can be clearly determined. By utilizing the inner diameter of the first spacer P1, the edge light can be effectively converged and the amount of light entering the lens can be controlled, thereby ensuring that the optical parameters of the optical imaging lens meet the design requirements.

[0122] Alternatively, if Figure 1A , Figure 1B and Figure 1C As shown, in one embodiment, the spacer further includes a first spacer P1 disposed between the first lens E1 and the second lens E2, and the first spacer P1 is in direct contact with the image side surface of the first lens E1; the optical imaging lens satisfies the relationship -7.85<R2 / (D1m-d1m)<-3.35. Wherein, d1m is the inner diameter of the image side surface of the first spacer P1, D1m is the outer diameter of the image side surface of the first spacer P1, and R2 is the curvature radius of the image side surface of the first lens E1.

[0123] The optical imaging lens is designed according to the above relationship. The inner diameter and outer diameter of the image side surface of the first spacer P1 constitute the width of the first spacer P1, and together with the curvature radius of the image side surface of the first lens E1, affect the amount of light entering the second lens E2 and the height of the light. In addition, through the shielding effect of the first spacer P1, the amount of light entering the structural part of the second lens E2 (the part used for fixed connection with the lens barrel) can also be reduced, avoiding the second lens E2 from generating stray light.

[0124] Alternatively, if Figure 1A , Figure 1B and Figure 1C As shown, in one embodiment, the spacer further includes a first spacer P1 disposed between the first lens E1 and the second lens E2 and a second spacer P2 disposed between the second lens E2 and the third lens E3, the first spacer P1 is in direct contact with the image side surface of the first lens E1, and the second spacer P1 is in direct contact with the image side surface of the second lens E2. The optical imaging lens satisfies the relationship 1.30mm -1 <EP12 / (f1*T12)<2.95mm -1 Wherein, f1 is the effective focal length of the first lens E1, T12 is the air distance between the first lens E1 and the second lens E2 on the optical axis, and EP12 is the distance between the first spacer P1 and the second spacer P2.

[0125] By designing the optical imaging lens according to the above relationship, the thickness of the structural parts of the first lens E1 and the second lens E2 can be determined, and the lens profile of the first lens E1 can be locked, thereby reducing the difficulty of processing and demolding the first lens E1. In addition, the air gap between the first lens E1 and the second lens E2 on the optical axis can affect the thickness and material of the first spacer P1 and the amount of light entering the second lens E2. By controlling the air gap between the first lens E1 and the second lens E2 on the optical axis, it can be ensured that the optical parameters of the optical imaging lens meet the design requirements.

[0126] Alternatively, if Figure 1A , Figure 1B and Figure 1C As shown, in one embodiment, the spacer further includes a first spacer P1 disposed between the first lens E1 and the second lens E2, and the first spacer P1 is in direct contact with the image side surface of the first lens E1; the optical imaging lens satisfies the relationship 0.75<(CT1+CP1) / EP01<1.85. Wherein, CP1 is the maximum thickness of the first spacer P1, CT1 is the center thickness of the first lens E1 on the optical axis, and EP01 is the distance between the object side end surface of the first lens barrel and the first spacer P1.

[0127] The optical imaging lens is designed according to the above relationship, and the total thickness of the first lens E1 and the first lens barrel can be locked to ensure that the first lens barrel will not be deformed during the assembly of the first optical component, thereby improving the assembly stability of the first lens E1. If the first lens E1 is not assembled stably, it will cause the assembly of the first optical component to be abnormal, affecting the design parameters and performance of the optical imaging lens.

[0128] Alternatively, if Figure 1A , Figure 1B and Figure 1C As shown, in one embodiment, the spacer further includes a third spacer P3 disposed between the third lens E3 and the fourth lens E4, and the third spacer P3 is in direct contact with the image side surface of the third lens E3. The optical imaging lens satisfies the relationship 8.4<R6 / (D3s-d3s)<16.5. Wherein, D3s is the outer diameter of the object side surface of the third spacer P3, d3s is the inner diameter of the object side surface of the third spacer P3, and R6 is the radius of curvature of the image side surface of the third lens E3.

[0129] The optical imaging lens is designed according to the above relationship, and the amount of light outputted by the third lens E3 and inputted into the fourth lens E4, as well as the width of the third spacer P3, can be determined. By controlling the amount of light inputted into the fourth lens E4, the transmission efficiency of the light can be determined to reduce light loss. The third spacer P3 can block the light entering the structural part of the fourth lens E4 to reduce the stray light generated by the structural part of the fourth lens E4, and reduce the stray light in the first optical component.

[0130] Alternatively, if Figure 1A , Figure 1B and Figure 1C As shown, in one embodiment, the spacer further includes a second spacer P2 disposed between the second lens E2 and the third lens E3 and a third spacer P3 disposed between the third lens E3 and the fourth lens E4, the second spacer P2 is in direct contact with the image side surface of the second lens E2; the third spacer P3 is in direct contact with the image side surface of the third lens E3; the optical imaging lens satisfies the relationship -11.25<R5 / (d2s*N3)<-5.30. Wherein, R5 is the radius of curvature of the object side surface of the third lens E3, d2s is the inner diameter of the object side surface of the second spacer P2, and N3 is the refractive index of the third lens E3.

[0131] By designing the optical imaging lens according to the above relationship, the amount of light input to the third lens E3 and the propagation of the light input to the third lens E3 can be determined, and the refraction and reflection of the light in the structural part of the third lens E3 and the stray light generated by the structural part of the third lens E3 can be reduced while ensuring the light transmission efficiency.

[0132] Alternatively, if Figure 1A , Figure 1B and Figure 1C As shown, in one embodiment, the spacer further includes a third spacer P3 disposed between the third lens E3 and the fourth lens E4, and the third spacer P3 is in direct contact with the image side surface of the third lens E3; the optical imaging lens satisfies the relationship 1.25<R7 / d3m<1.55. Wherein, R7 is the curvature radius of the object side surface of the fourth lens E4, and d3m is the inner diameter of the image side surface of the third spacer P3.

[0133] By designing the optical imaging lens according to the above relationship, the incident aperture of the fourth lens E4 and the transmission state of the object side of the fourth lens E4 facing the incident light can be confirmed to reduce the loss in the light transmission process, and the amount of light entering the structural part of the fourth lens E4 can be controlled to reduce the stray light generated by the structural part of the fourth lens E4.

[0134] Alternatively, if Figure 1A , Figure 1B and Figure 1C As shown, in one embodiment, the optical imaging lens satisfies the relationship -10.55<R8 / |d10m-D20s|<-4.95. Wherein, R8 is the curvature of the image side surface of the fourth lens E4, d10m is the inner diameter of the image side end surface of the first lens barrel closest to the imaging surface, and D20s is the outer diameter of the object side end surface of the second lens barrel closest to the object side.

[0135] Designing the optical imaging lens according to the above relationship can ensure that the first lens barrel and the second lens barrel will not interfere with each other when the distance between them is the smallest, thereby ensuring that the first optical component and the second optical component can be assembled normally. In addition, the smaller the radius of curvature of the image side surface of the fourth lens E4, the shorter the structure of the fourth lens E4 under the same outer diameter, thereby reducing the stray light generated by the structure of the fourth lens E4, and ensuring that the fourth lens E4 has a suitable bearing width.

[0136] Alternatively, if Figure 1A , Figure 1B and Figure 1CAs shown, in one embodiment, the spacer further includes a sixth spacer P6 disposed between the sixth lens E6 and the seventh lens E7, and the sixth spacer P6 is in direct contact with the image side surface of the sixth lens E6. The optical imaging lens satisfies the relationship 1.30<(T56+CT6) / EP56<2.85. Wherein, T56 is the air spacing between the fifth lens E5 and the sixth lens E6 on the optical axis, CT6 is the center thickness of the sixth lens E6 on the optical axis, and EP56 is the spacing between the fifth spacer P5 and the sixth spacer P6.

[0137] By designing the optical imaging lens according to the above relationship, the lens profiles of the fifth lens E5 and the sixth lens E6 and the thickness of the structural part of the sixth lens E6 can be ensured, so that the sixth lens E6 has a concave mirror structure as a whole, so as to transmit the light in a divergent manner, thereby increasing the overall height of the light and meeting the image height design requirements.

[0138] Alternatively, if Figure 1A , Figure 1B and Figure 1C As shown, in one embodiment, the spacer further includes a sixth spacer P6 disposed between the sixth lens E6 and the seventh lens E7, and the sixth spacer P6 is in direct contact with the image side surface of the sixth lens E6; the optical imaging lens satisfies the relationship 0.35<(R11*D5m) / (R12*D6s)<1.05. Wherein, R11 is the radius of curvature of the object side surface of the sixth lens E6, R12 is the radius of curvature of the image side surface of the sixth lens E6, D5m is the outer diameter of the image side surface of the fifth spacer P5, and D6s is the outer diameter of the object side surface of the sixth spacer P6.

[0139] By designing the optical imaging lens according to the above relationship, the outline size of the sixth lens E6 can be determined. The larger the outer diameter of the object side of the sixth spacer P6 is, the larger the outer diameter of the sixth lens E6 is, and the smaller the risk of generating stray light is. The larger the outer diameter of the sixth lens E6 is, the larger the space for the structural part of the sixth lens E6 is, the larger the room for improving stray light is, and the more options can be selected.

[0140] Alternatively, if Figure 1A , Figure 1B and Figure 1CAs shown, in one embodiment, the spacer further includes a sixth spacer P6 disposed between the sixth lens E6 and the seventh lens E7 and a seventh spacer P7 disposed between the seventh lens E7 and the eighth lens E8, the sixth spacer P6 is in direct contact with the image side surface of the sixth lens E6; the seventh spacer P7 is in direct contact with the image side surface of the seventh lens E7; the optical imaging lens satisfies the relationship 0.75<EP67 / T67<2.7. Among them, EP67 is the interval between the sixth spacer P6 and the seventh spacer P7, and T67 is the air interval between the sixth lens E6 and the seventh lens E7 on the optical axis.

[0141] The optical imaging lens is designed according to the above relationship, and the structure of the seventh lens E7 can be determined. According to the profile of the seventh lens E7, the influence of the thickness of the seventh lens E7 on the sagittal height of the image side surface of the seventh lens E7 and the influence on the processing and demolding of the seventh lens E7 can be determined. The smoother the object side surface and the image side surface of the seventh lens E7 are, the easier it is to process and demold.

[0142] Alternatively, if Figure 1A , Figure 1B and Figure 1C As shown, in one embodiment, the spacer further includes a sixth spacer P6 disposed between the sixth lens E6 and the seventh lens E7 and a seventh spacer P7 disposed between the seventh lens E7 and the eighth lens E8, the sixth spacer P6 is in direct contact with the image side surface of the sixth lens E6, and the seventh spacer P7 is in direct contact with the image side surface of the seventh lens E7; the optical imaging lens satisfies the relationship 0.75<(R13 / d6m)*(R14 / d7s)<2.65. Wherein, R13 is the radius of curvature of the object side surface of the seventh lens E7, R14 is the radius of curvature of the image side surface of the seventh lens E7, d6m is the inner diameter of the image side surface of the sixth spacer P6, and d7s is the inner diameter of the object side surface of the seventh spacer P7.

[0143] By designing the optical imaging lens according to the above relationship, the incident aperture of the light emitted from the sixth lens E6 and entering the seventh lens E7, and the exit aperture of the light emitted from the seventh lens E7 can be determined. In addition, according to the curvature radius of the object side surface of the seventh lens E7 and the curvature radius of the image side surface of the seventh lens E7, the light propagation mode in the seventh lens E7 can also be determined, so that the seventh lens E7 can have a divergent effect on the light.

[0144] Alternatively, if Figure 1A , Figure 1B and Figure 1CAs shown, in one embodiment, the spacer further includes a seventh spacer P7 disposed between the seventh lens E7 and the eighth lens E8, and the seventh spacer P7 is in direct contact with the image side surface of the seventh lens E7; the optical imaging lens satisfies the relationship -6.65<R15 / (D7s-d7s)<-1.85. Wherein, D7s is the outer diameter of the object side surface of the seventh spacer P7, d7s is the inner diameter of the object side surface of the seventh spacer P7, and R15 is the radius of curvature of the object side surface of the eighth lens E8.

[0145] By designing the optical imaging lens according to the above relationship, the width of the seventh spacer P7 can be determined, thereby achieving the light blocking effect on the eighth lens E8 and reducing the stray light generated by the structural part of the eighth lens E8. In addition, by controlling the curvature radius of the object side surface of the eighth lens E8, the incident light can also be diverged, thereby further raising the height of the outgoing light of the eighth lens E8, ensuring that the overall image height of the second optical component can meet the design requirements.

[0146] Alternatively, if Figure 1A , Figure 1B and Figure 1C As shown, in one embodiment, the optical imaging lens satisfies the relationship 2.40<L10 / CT4<2.90 and 2.35<f4 / CT4<2.75. Wherein, L10 is the maximum height of the first lens barrel, CT4 is the center thickness of the fourth lens E4 on the optical axis, and f4 is the effective focal length of the fourth lens E4.

[0147] By designing the optical imaging lens according to the above relationship, the maximum outer diameter of the first lens barrel can be ensured to avoid interference between the first lens barrel and the second lens barrel, and the lens size of the fourth lens E4 can be processed, and the thickness of the first lens barrel meets the minimum thickness requirement of injection molding.

[0148] Alternatively, if Figure 1A , Figure 1B and Figure 1CAs shown, in one embodiment, the spacer further includes a sixth spacer P6 disposed between the sixth lens E6 and the seventh lens E7 and a seventh spacer P7 disposed between the seventh lens E7 and the eighth lens E8, the sixth spacer P6 is in direct contact with the image side surface of the sixth lens E6, and the seventh spacer P7 is in direct contact with the image side surface of the seventh lens E7; the optical imaging lens satisfies the relationship 1.15<T78 / EP67<3.05 and 2.7<T78 / CT8<3.3. Wherein, T78 is the air spacing between the seventh lens E7 and the eighth lens E8 on the optical axis, CT8 is the center thickness of the eighth lens E8 on the optical axis, and EP67 is the spacing between the sixth spacer P6 and the seventh spacer P7.

[0149] By designing the optical imaging lens according to the above relationship, the thickness of the structural part of the seventh lens E7 can be determined, thereby determining the overall profile of the seventh lens E7, so that the thickness of the structural part of the seventh lens E7 is smaller, so as to reduce the stray light generated by the structural part of the seventh lens E7.

[0150] Exemplarily, the first lens E1 has positive focal power, the second lens E2 has positive focal power or negative focal power, the third lens E3 has negative focal power, the fourth lens E4 has positive focal power, the fifth lens E5 has negative focal power, the sixth lens E6 has positive focal power or negative focal power, the seventh lens E7 has positive focal power or negative focal power, and the eighth lens E8 has positive focal power or negative focal power.

[0151] Exemplarily, the object-side surface and the image-side surface of the first lens E1 are concave and convex surfaces respectively, the object-side surface and the image-side surface of the second lens E2 are convex and concave surfaces respectively, the object-side surface and the image-side surface of the third lens E3 are concave and concave surfaces respectively, the object-side surface and the image-side surface of the fourth lens E4 are convex and convex surfaces respectively, the object-side surface and the image-side surface of the fifth lens E5 are concave and convex surfaces respectively, the object-side surface and the image-side surface of the sixth lens E6 are convex and concave surfaces respectively, the object-side surface and the image-side surface of the seventh lens E7 are concave and convex surfaces respectively, and the object-side surface and the image-side surface of the eighth lens E8 are concave and concave surfaces respectively.

[0152] Specific embodiments of the optical imaging lens applicable to the above embodiments are further described below with reference to the accompanying drawings.

[0153] like Figure 1A , Figure 1B and Figure 1C Detailed description is given of the first example and the second example of the first embodiment of the present application. In the first embodiment of the present application, the optical imaging lens may include a first optical component and a second optical component.

[0154] The first optical assembly of the first example and the second example of the first embodiment both comprises a first lens barrel, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a first spacer P1, a first front auxiliary spacer P1b, a first rear auxiliary spacer P1c, a second spacer P2, a third spacer P3, a third front auxiliary spacer P3b, and a third rear auxiliary spacer P3c. The first lens E1, the second lens E2, the third lens E3, and the fourth lens E4 are sequentially arranged in the first lens barrel along the optical path from the object side to the image side, wherein the object side surface and the image side surface of the first lens E1 are concave and convex, respectively, the object side surface and the image side surface of the second lens E2 are convex and concave, respectively, the object side surface and the image side surface of the third lens E3 are concave and concave, respectively, and the object side surface and the image side surface of the fourth lens E4 are convex and convex, respectively.

[0155] The first spacer P1, the first front auxiliary spacer P1b and the first rear auxiliary spacer P1c are disposed between the first lens E1 and the second lens E2, the first spacer P1 is in direct contact with the image side surface of the first lens E1, the first front auxiliary spacer P1b is in direct contact with the image side surface of the first spacer P1, and the first rear auxiliary spacer P1c is in direct contact with the image side surface of the first front auxiliary spacer P1b. The second spacer P2 is disposed between the second lens E2 and the third lens E3, and the second spacer P2 is in direct contact with the image side surface of the first lens E1. The third spacer P3, the third front auxiliary spacer P3b and the third rear auxiliary spacer P3c are arranged between the third lens E3 and the fourth lens E4. The third spacer P3 is in direct contact with the image side surface of the third lens E3, the third front auxiliary spacer P3b is in direct contact with the image side surface of the third spacer P3, and the third rear auxiliary spacer P3c is in direct contact with the image side surface of the third front auxiliary spacer P3b.

[0156] The second optical assembly of the first example and the second example of the first embodiment both comprises a second lens barrel, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a fifth spacer P5, a fifth front auxiliary spacer P5b, a sixth spacer P6, a seventh spacer P7 and a seventh auxiliary spacer P7b. The second lens barrel is adjustably arranged on the image side of the first lens barrel. The fifth lens E5, the sixth lens E6, the seventh lens E7 and the eighth lens E8 are sequentially arranged in the second lens barrel along the optical path from the object side to the image side. The object side surface and the image side surface of the fifth lens E5 are concave and convex respectively, the object side surface and the image side surface of the sixth lens E6 are convex and concave respectively, the object side surface and the image side surface of the seventh lens E7 are concave and convex respectively, and the object side surface and the image side surface of the eighth lens E8 are concave and concave respectively.

[0157] The fifth spacer P5 and the fifth front auxiliary spacer P5b are disposed between the fifth lens E5 and the sixth lens E6, the fifth spacer P5 is in direct contact with the image side surface of the fifth lens E5, and the fifth front auxiliary spacer P5b is in direct contact with the image side surface of the fifth spacer P5. The sixth spacer P6 is disposed between the sixth lens E6 and the seventh lens E7, and the sixth spacer P6 is in direct contact with the image side surface of the sixth lens E6. The seventh spacer P7 and the seventh auxiliary spacer P7b are disposed between the seventh lens E7 and the eighth lens E8, the seventh spacer P7 is in direct contact with the image side surface of the seventh lens E7, and the seventh auxiliary spacer P7b is in direct contact with the image side surface of the seventh spacer P7.

[0158] Table 1 shows basic parameters of the optical imaging lens of the first embodiment, wherein the units of the radius of curvature and thickness are both millimeters (mm).

[0159] Table 1: Basic parameters of the optical imaging lens of the first embodiment

[0160]

[0161]

[0162] In the first embodiment, the object side surface and the image side surface of any lens from the first lens E1 to the seventh lens E7 are both aspherical surfaces, and the surface shape x of each aspherical lens can be defined by but not limited to the following aspherical surface formula:

[0163]

[0164] Wherein, x is the distance from the vertex of the aspheric surface when the aspheric surface is at a height of h along the optical axis: c is the paraxial curvature of the aspheric surface, c=1R (i.e., the paraxial curvature c is the reciprocal of the radius of curvature R in Table 1 above): k is the cone coefficient: Ai is the correction coefficient of the i-th order of the aspheric surface. Table 2 below gives the high-order coefficients A4, A6, A8, A10, A12, A14, A16, A18 and A20 that can be used for each aspheric mirror surface S1-S16 in the first embodiment.

[0165] Table 2: Table of aspheric coefficients of the aspheric mirror surface of the optical imaging lens of the first embodiment

[0166]

[0167]

[0168] Table 3 shows the size data table of the spacers of the optical imaging lens of the first example and the second example of the first embodiment, wherein the units of the size data are all millimeters (mm). The two examples respectively provide the first lens barrel, the second lens barrel, the first spacer P1, the second spacer P2, the third spacer P3, the fifth spacer P5, the sixth spacer P6 and the seventh spacer P7 of two different sizes and spacing distances.

[0169] Table 3: Dimensional data of the spacer of the optical imaging lens of the first embodiment

[0170] Example parameters 1-1 1-2 d1s(mm) 7.100 7.100 d1m(mm) 7.100 7.100 D1m(mm) 8.800 8.052 d2s(mm) 6.840 6.840 d3s(mm) 7.000 7.000 d3m(mm) 7.000 7.000 D3s(mm) 9.400 9.700 d5s(mm) 8.169 8.169 d5m(mm) 9.991 9.591 D5m(mm) 10.730 10.156 d6m(mm) 10.407 10.407 D6s(mm) 13.500 13.845 d7s(mm) 11.983 11.783 D7s(mm) 13.033 13.672 d10m(mm) 10.554 10.854 D20s(mm) 9.500 10.300 CP1(mm) 0.022 0.022 EP01(mm) 1.191 1.191 EP12(mm) 1.694 1.694 EP56(mm) 0.753 0.753 EP67(mm) 0.575 0.575 EP205(mm) 1.839 1.839 L10(mm) 7.900 7.900

[0171] Figure 2A axial chromatic aberration curve of the optical imaging lens of the first embodiment is shown, Figure 2B FIG. 4 shows an astigmatism curve of the optical imaging lens of the first embodiment. Figure 2C shows the distortion curve of the optical imaging lens of the first embodiment, Figure 2D The chromatic aberration curve of the first embodiment is shown. FIG. 2A to FIG. 2D It can be seen that the optical imaging lens provided in the first embodiment has good imaging quality.

[0172] like Figure 3A and Figure 3B Detailed description is given of the first example and the second example of the second embodiment of the present application. In the second embodiment of the present application, the optical imaging lens may include a first optical component and a second optical component.

[0173] The first optical assembly of the first example and the second example of the second embodiment both comprises a first lens barrel, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a first spacer P1, a first front auxiliary spacer P1b, a first rear auxiliary spacer P1c, a second spacer P2, a third spacer P3, a third front auxiliary spacer P3b, and a third rear auxiliary spacer P3c. The first lens E1, the second lens E2, the third lens E3, and the fourth lens E4 are sequentially arranged in the first lens barrel along the optical path from the object side to the image side, wherein the object side surface and the image side surface of the first lens E1 are concave and convex, respectively, the object side surface and the image side surface of the second lens E2 are convex and concave, respectively, the object side surface and the image side surface of the third lens E3 are concave and concave, respectively, and the object side surface and the image side surface of the fourth lens E4 are convex and convex, respectively.

[0174] The first spacer P1, the first front auxiliary spacer P1b and the first rear auxiliary spacer P1c are disposed between the first lens E1 and the second lens E2, the first spacer P1 is in direct contact with the image side surface of the first lens E1, the first front auxiliary spacer P1b is in direct contact with the image side surface of the first spacer P1, and the first rear auxiliary spacer P1c is in direct contact with the image side surface of the first front auxiliary spacer P1b. The second spacer P2 is disposed between the second lens E2 and the third lens E3, and the second spacer P2 is in direct contact with the image side surface of the first lens E1. The third spacer P3, the third front auxiliary spacer P3b and the third rear auxiliary spacer P3c are arranged between the third lens E3 and the fourth lens E4. The third spacer P3 is in direct contact with the image side surface of the third lens E3, the third front auxiliary spacer P3b is in direct contact with the image side surface of the third spacer P3, and the third rear auxiliary spacer P3c is in direct contact with the image side surface of the third front auxiliary spacer P3b.

[0175] The second optical assembly of the first example of the second embodiment includes a second lens barrel, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a fifth spacer P5, a sixth spacer P6, a seventh spacer P7 and a seventh auxiliary spacer P7b. The second lens barrel is adjustably arranged on the image side of the first lens barrel. The fifth lens E5, the sixth lens E6, the seventh lens E7 and the eighth lens E8 are sequentially arranged in the second lens barrel along the optical path from the object side to the image side, wherein the object side surface and the image side surface of the fifth lens E5 are concave and convex respectively, the object side surface and the image side surface of the sixth lens E6 are convex and concave respectively, the object side surface and the image side surface of the seventh lens E7 are concave and convex respectively, and the object side surface and the image side surface of the eighth lens E8 are concave and concave respectively.

[0176] The fifth spacer P5 is disposed between the fifth lens E5 and the sixth lens E6, and the fifth spacer P5 is in direct contact with the image side surface of the fifth lens E5. The sixth spacer P6 is disposed between the sixth lens E6 and the seventh lens E7, and the sixth spacer P6 is in direct contact with the image side surface of the sixth lens E6. The seventh spacer P7 and the seventh auxiliary spacer P7b are disposed between the seventh lens E7 and the eighth lens E8, the seventh spacer P7 is in direct contact with the image side surface of the seventh lens E7, and the seventh auxiliary spacer P7b is in direct contact with the image side surface of the seventh spacer P7.

[0177] The second optical assembly of the second example of the second embodiment includes a second lens barrel, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a fifth spacer P5, a sixth spacer P6, a sixth auxiliary spacer P6b, a seventh spacer P7 and a seventh auxiliary spacer P7b. The second lens barrel is adjustably arranged on the image side of the first lens barrel. The fifth lens E5, the sixth lens E6, the seventh lens E7 and the eighth lens E8 are sequentially arranged in the second lens barrel along the optical path from the object side to the image side, wherein the object side surface and the image side surface of the fifth lens E5 are concave and convex respectively, the object side surface and the image side surface of the sixth lens E6 are convex and concave respectively, the object side surface and the image side surface of the seventh lens E7 are concave and convex respectively, and the object side surface and the image side surface of the eighth lens E8 are concave and concave respectively.

[0178] The fifth spacer P5 is disposed between the fifth lens E5 and the sixth lens E6, and the fifth spacer P5 is in direct contact with the image side surface of the fifth lens E5. The sixth spacer P6 and the sixth auxiliary spacer P6b are disposed between the sixth lens E6 and the seventh lens E7, the sixth spacer P6 is in direct contact with the image side surface of the sixth lens E6, and the sixth auxiliary spacer P6b is in direct contact with the image side surface of the sixth spacer P6. The seventh spacer P7 and the seventh auxiliary spacer P7b are disposed between the seventh lens E7 and the eighth lens E8, the seventh spacer P7 is in direct contact with the image side surface of the seventh lens E7, and the seventh auxiliary spacer P7b is in direct contact with the image side surface of the seventh spacer P7.

[0179] Table 4 shows a basic parameter table of the optical imaging lens of the second embodiment, wherein the units of the curvature radius and thickness are both millimeters (mm).

[0180] Table 4: Basic parameters of the optical imaging lens of the second embodiment

[0181]

[0182]

[0183] In the second embodiment, the object side surface and the image side surface of any lens from the first lens E1 to the seventh lens E7 are both aspherical surfaces, and the surface shape x of each aspherical lens can be defined by but not limited to the following aspherical surface formula:

[0184]

[0185] Wherein, x is the distance from the vertex of the aspheric surface when the aspheric surface is at a height of h along the optical axis: c is the paraxial curvature of the aspheric surface, c=1R (i.e., the paraxial curvature c is the reciprocal of the radius of curvature R in Table 4 above): k is the cone coefficient: Ai is the correction coefficient of the i-th order of the aspheric surface. Table 5 below gives the high-order coefficients A4, A6, A8, A10, A12, A14, A16, A18 and A20 that can be used for each aspheric mirror surface S1-S16 in the second embodiment.

[0186] Table 5: Table of aspheric coefficients of the aspheric mirror surface of the optical imaging lens of the second embodiment

[0187]

[0188]

[0189] Table 6 shows the size data table of the spacers of the optical imaging lens of the first example and the second example of the second embodiment, wherein the units of the size data are all millimeters (mm). The two examples respectively provide the first lens barrel, the second lens barrel, the first spacer P1, the second spacer P2, the third spacer P3, the fifth spacer P5, the sixth spacer P6 and the seventh spacer P7 of two different sizes and spacing distances.

[0190] Table 6: Dimensional data of the spacer of the optical imaging lens of the second embodiment

[0191] Example parameters 2-1 2-2 d1s(mm) 7.100 7.100 d1m(mm) 7.100 7.100 D1m(mm) 8.800 8.800 d2s(mm) 6.840 6.840 d3s(mm) 7.000 7.000 d3m(mm) 7.000 7.000 D3s(mm) 9.400 8.220 d5s(mm) 8.660 8.660 d5m(mm) 8.660 8.660 D5m(mm) 11.156 11.456 d6m(mm) 13.500 11.111 D6s(mm) 10.407 11.260 d7s(mm) 11.983 12.283 D7s(mm) 13.033 13.330 d10m(mm) 10.554 10.554 D20s(mm) 11.503 11.454 CP1(mm) 0.022 0.022 EP01(mm) 1.481 1.481 EP12(mm) 1.705 1.694 EP56(mm) 0.981 0.687 EP67(mm) 0.739 0.661 EP205(mm) 2.359 2.559 L10(mm) 7.100 7.100

[0192] Figure 4A axial chromatic aberration curve of the optical imaging lens of the second embodiment is shown, Figure 4B FIG. 4 shows an astigmatism curve of the optical imaging lens of the second embodiment. Figure 4C : shows the distortion curve of the optical imaging lens of the second embodiment, Figure 4D The chromatic aberration curve of the second embodiment is shown. 4A to 4D It can be seen that the optical imaging lens provided in the second embodiment has good imaging quality.

[0193] like Figure 5A and Figure 5B , which are the first example and the second example of the third embodiment of the present application. In the third embodiment of the present application, the optical imaging lens may include a first optical component and a second optical component.

[0194] The first optical assembly of the first example of the third embodiment includes a first lens barrel, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a first spacer P1, a first front auxiliary spacer P1b, a first rear auxiliary spacer P1c, a second spacer P2, a third spacer P3, a third front auxiliary spacer P3b, and a third rear auxiliary spacer P3c. The first lens E1, the second lens E2, the third lens E3, and the fourth lens E4 are sequentially arranged in the first lens barrel along the optical path from the object side to the image side, wherein the object side surface and the image side surface of the first lens E1 are concave and convex, respectively, the object side surface and the image side surface of the second lens E2 are convex and concave, respectively, the object side surface and the image side surface of the third lens E3 are concave and concave, respectively, and the object side surface and the image side surface of the fourth lens E4 are convex and convex, respectively.

[0195] The first spacer P1, the first front auxiliary spacer P1b and the first rear auxiliary spacer P1c are disposed between the first lens E1 and the second lens E2, the first spacer P1 is in direct contact with the image side surface of the first lens E1, the first front auxiliary spacer P1b is in direct contact with the image side surface of the first spacer P1, and the first rear auxiliary spacer P1c is in direct contact with the image side surface of the first front auxiliary spacer P1b. The second spacer P2 is disposed between the second lens E2 and the third lens E3, and the second spacer P2 is in direct contact with the image side surface of the first lens E1. The third spacer P3, the third front auxiliary spacer P3b and the third rear auxiliary spacer P3c are arranged between the third lens E3 and the fourth lens E4. The third spacer P3 is in direct contact with the image side surface of the third lens E3, the third front auxiliary spacer P3b is in direct contact with the image side surface of the third spacer P3, and the third rear auxiliary spacer P3c is in direct contact with the image side surface of the third front auxiliary spacer P3b.

[0196] The second optical assembly of the first example of the third embodiment includes a second lens barrel, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a fifth spacer P5, a fifth front auxiliary spacer P5b, a fifth rear auxiliary spacer P5c, a sixth spacer P6, a seventh spacer P7 and a seventh auxiliary spacer P7b. The second lens barrel is adjustably arranged on the image side of the first lens barrel. The fifth lens E5, the sixth lens E6, the seventh lens E7 and the eighth lens E8 are sequentially arranged in the second lens barrel along the optical path from the object side to the image side, wherein the object side surface and the image side surface of the fifth lens E5 are concave and convex respectively, the object side surface and the image side surface of the sixth lens E6 are convex and concave respectively, the object side surface and the image side surface of the seventh lens E7 are concave and convex respectively, and the object side surface and the image side surface of the eighth lens E8 are concave and concave respectively.

[0197] The fifth spacer P5, the fifth front auxiliary spacer P5b and the fifth rear auxiliary spacer P5c are arranged between the fifth lens E5 and the sixth lens E6, the fifth spacer P5 is in direct contact with the image side surface of the fifth lens E5, the fifth front auxiliary spacer P5b is in direct contact with the image side surface of the fifth spacer P5, and the fifth rear auxiliary spacer P5c is in direct contact with the image side surface of the fifth front auxiliary spacer P5b. The sixth spacer P6 is arranged between the sixth lens E6 and the seventh lens E7, and the sixth spacer P6 is in direct contact with the image side surface of the sixth lens E6. The seventh spacer P7 and the seventh auxiliary spacer P7b are arranged between the seventh lens E7 and the eighth lens E8, the seventh spacer P7 is in direct contact with the image side surface of the seventh lens E7, and the seventh auxiliary spacer P7b is in direct contact with the image side surface of the seventh spacer P7.

[0198] The first optical assembly of the second example of the third embodiment includes a first lens barrel, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a first spacer P1, a first front auxiliary spacer P1b, a first rear auxiliary spacer P1c, a second spacer P2, a third spacer P3, and a third front auxiliary spacer P3b. The first lens E1, the second lens E2, the third lens E3, and the fourth lens E4 are sequentially arranged in the first lens barrel along the optical path from the object side to the image side, wherein the object side surface and the image side surface of the first lens E1 are concave and convex, respectively, the object side surface and the image side surface of the second lens E2 are convex and concave, respectively, the object side surface and the image side surface of the third lens E3 are concave and concave, respectively, and the object side surface and the image side surface of the fourth lens E4 are convex and convex, respectively.

[0199] The first spacer P1, the first front auxiliary spacer P1b and the first rear auxiliary spacer P1c are arranged between the first lens E1 and the second lens E2, the first spacer P1 is in direct contact with the image side surface of the first lens E1, the first front auxiliary spacer P1b is in direct contact with the image side surface of the first spacer P1, and the first rear auxiliary spacer P1c is in direct contact with the image side surface of the first front auxiliary spacer P1b. The second spacer P2 is arranged between the second lens E2 and the third lens E3, and the second spacer P2 is in direct contact with the image side surface of the first lens E1. The third spacer P3 and the third front auxiliary spacer P3b are arranged between the third lens E3 and the fourth lens E4, the third spacer P3 is in direct contact with the image side surface of the third lens E3, and the third front auxiliary spacer P3b is in direct contact with the image side surface of the third spacer P3.

[0200] The second optical assembly of the second example of the third embodiment includes a second lens barrel, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a fifth spacer P5, a fifth front auxiliary spacer P5b, a sixth spacer P6, a seventh spacer P7 and a seventh auxiliary spacer P7b. The second lens barrel is adjustably arranged on the image side of the first lens barrel. The fifth lens E5, the sixth lens E6, the seventh lens E7 and the eighth lens E8 are sequentially arranged in the second lens barrel along the optical path from the object side to the image side, wherein the object side surface and the image side surface of the fifth lens E5 are concave and convex respectively, the object side surface and the image side surface of the sixth lens E6 are convex and concave respectively, the object side surface and the image side surface of the seventh lens E7 are concave and convex respectively, and the object side surface and the image side surface of the eighth lens E8 are concave and concave respectively.

[0201] The fifth spacer P5 and the fifth front auxiliary spacer P5b are disposed between the fifth lens E5 and the sixth lens E6, the fifth spacer P5 is in direct contact with the image side surface of the fifth lens E5, and the fifth front auxiliary spacer P5b is in direct contact with the image side surface of the fifth spacer P5. The sixth spacer P6 is disposed between the sixth lens E6 and the seventh lens E7, and the sixth spacer P6 is in direct contact with the image side surface of the sixth lens E6. The seventh spacer P7 and the seventh auxiliary spacer P7b are disposed between the seventh lens E7 and the eighth lens E8, the seventh spacer P7 is in direct contact with the image side surface of the seventh lens E7, and the seventh auxiliary spacer P7b is in direct contact with the image side surface of the seventh spacer P7.

[0202] Table 7 shows a basic parameter table of the optical imaging lens of the third embodiment, wherein the units of the curvature radius and thickness are both millimeters (mm).

[0203] Table 7: Basic parameters of the optical imaging lens of the third embodiment

[0204] Face number Surface type Radius of curvature thickness Material Cone coefficient OBJ Spherical endless endless STO Spherical endless 0.2326 S1 Aspheric -14.1995 1.3637 1.55，56.1 0.4223 S2 Aspheric -7.1335 0.0421 0.0143 S3 Aspheric 6.6839 0.9549 1.59，28.2 -0.0341 S4 Aspheric 6.2988 1.0526 -0.1182 S5 Aspheric -130.1623 0.6473 1.67，20.4 99.0000 S6 Aspheric 24.8479 0.9297 -3.9579 S7 Aspheric 10.8595 2.8000 1.55，56.1 -0.1883 S8 Aspheric -5.5175 0.5326 -0.0031 S9 Aspheric -2.8538 0.5313 1.61，28.3 -0.9967 S10 Aspheric -4.5335 0.9451 -0.0024 S11 Aspheric 10.6865 1.0913 1.68，19.2 -0.2355 S12 Aspheric 9.5325 0.6956 -1.2013 S13 Aspheric -34.5569 1.7555 1.55，56.1 0.0000 S14 Aspheric -5.7671 1.7897 -2.8807 S15 Aspheric -7.2782 0.6363 1.54，55.7 -1.2435 S16 Aspheric 9.8667 1.1100 0.0000 S17 Spherical endless 0.2100 1.52，64.2 S18 Spherical endless 0.7900 S19 Spherical endless

[0205] In the third embodiment, the object side surface and the image side surface of any lens from the first lens E1 to the seventh lens E7 are both aspherical surfaces, and the surface shape x of each aspherical lens can be defined by but not limited to the following aspherical surface formula:

[0206]

[0207] Wherein, x is the distance from the vertex of the aspheric surface to the height h along the optical axis: c is the paraxial curvature of the aspheric surface, c=1R (i.e., the paraxial curvature c is the reciprocal of the radius of curvature R in Table 7 above): k is the cone coefficient: Ai is the correction coefficient of the i-th order of the aspheric surface. Table 8 below gives the high-order coefficients A4, A6, A8, A10, A12, A14, A16, A18 and A20 that can be used for each aspheric mirror surface S1-S16 in the third embodiment.

[0208] Table 8: Table of aspheric coefficients of the aspheric mirror surface of the optical imaging lens of the third embodiment

[0209]

[0210]

[0211] Table 9 shows the size data table of the spacers of the optical imaging lens of the first example and the second example of the third embodiment, wherein the units of the size data are all millimeters (mm). The two examples respectively provide the first lens barrel, the second lens barrel, the first spacer P1, the second spacer P2, the third spacer P3, the fifth spacer P5, the sixth spacer P6 and the seventh spacer P7 of two different sizes and spacing distances.

[0212] Table 9: Dimensional data of the spacer of the optical imaging lens of the third embodiment

[0213]

[0214]

[0215] Fig. 6A axial chromatic aberration curve of the optical imaging lens of the third embodiment is shown, Figure 6B FIG. 4 shows an astigmatism curve of the optical imaging lens of the third embodiment. Figure 6C : shows the distortion curve of the optical imaging lens of the third embodiment, Fig.6D The chromatic aberration curve of the third embodiment is shown. FIG. 6A to FIG. 6D It can be seen that the optical imaging lens provided in the third embodiment has good imaging quality.

[0216] like Fig. 7A and Figure 7B , which are the first example and the second example of the fourth embodiment of the present application. In the fourth embodiment of the present application, the optical imaging lens may include a first optical component and a second optical component.

[0217] The first optical assembly of the first example of the fourth embodiment includes a first lens barrel, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a first spacer P1, a first front auxiliary spacer P1b, a first rear auxiliary spacer P1c, a second spacer P2, a third spacer P3, a third front auxiliary spacer P3b, and a third rear auxiliary spacer P3c. The first lens E1, the second lens E2, the third lens E3, and the fourth lens E4 are sequentially arranged in the first lens barrel along the optical path from the object side to the image side, wherein the object side surface and the image side surface of the first lens E1 are concave and convex, respectively, the object side surface and the image side surface of the second lens E2 are convex and concave, respectively, the object side surface and the image side surface of the third lens E3 are concave and concave, respectively, and the object side surface and the image side surface of the fourth lens E4 are convex and convex, respectively.

[0218] The first spacer P1, the first front auxiliary spacer P1b and the first rear auxiliary spacer P1c are disposed between the first lens E1 and the second lens E2, the first spacer P1 is in direct contact with the image side surface of the first lens E1, the first front auxiliary spacer P1b is in direct contact with the image side surface of the first spacer P1, and the first rear auxiliary spacer P1c is in direct contact with the image side surface of the first front auxiliary spacer P1b. The second spacer P2 is disposed between the second lens E2 and the third lens E3, and the second spacer P2 is in direct contact with the image side surface of the first lens E1. The third spacer P3, the third front auxiliary spacer P3b and the third rear auxiliary spacer P3c are arranged between the third lens E3 and the fourth lens E4. The third spacer P3 is in direct contact with the image side surface of the third lens E3, the third front auxiliary spacer P3b is in direct contact with the image side surface of the third spacer P3, and the third rear auxiliary spacer P3c is in direct contact with the image side surface of the third front auxiliary spacer P3b.

[0219] The first optical assembly of the second example of the fourth embodiment comprises a first lens barrel, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a first spacer P1, a first front auxiliary spacer P1b, a second spacer P2, a third spacer P3, a third front auxiliary spacer P3b, and a third rear auxiliary spacer P3c. The first lens E1, the second lens E2, the third lens E3, and the fourth lens E4 are sequentially arranged in the first lens barrel along the optical path from the object side to the image side, wherein the object side surface and the image side surface of the first lens E1 are concave and convex, respectively, the object side surface and the image side surface of the second lens E2 are convex and concave, respectively, the object side surface and the image side surface of the third lens E3 are concave and concave, respectively, and the object side surface and the image side surface of the fourth lens E4 are convex and convex, respectively.

[0220] The first spacer P1 and the first front auxiliary spacer P1b are arranged between the first lens E1 and the second lens E2, the first spacer P1 is in direct contact with the image side surface of the first lens E1, and the first front auxiliary spacer P1b is in direct contact with the image side surface of the first spacer P1. The second spacer P2 is arranged between the second lens E2 and the third lens E3, and the second spacer P2 is in direct contact with the image side surface of the first lens E1. The third spacer P3, the third front auxiliary spacer P3b and the third rear auxiliary spacer P3c are arranged between the third lens E3 and the fourth lens E4, the third spacer P3 is in direct contact with the image side surface of the third lens E3, the third front auxiliary spacer P3b is in direct contact with the image side surface of the third spacer P3, and the third rear auxiliary spacer P3c is in direct contact with the image side surface of the third front auxiliary spacer P3b.

[0221] The second optical assembly of the first example and the second example of the fourth embodiment both comprises a second lens barrel, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a fifth spacer P5, a fifth front auxiliary spacer P5b, a fifth rear auxiliary spacer P5c, a sixth spacer P6 and a seventh spacer P7. The second lens barrel is adjustably arranged on the image side of the first lens barrel. The fifth lens E5, the sixth lens E6, the seventh lens E7 and the eighth lens E8 are sequentially arranged in the second lens barrel along the optical path from the object side to the image side. The object side surface and the image side surface of the fifth lens E5 are respectively a concave surface and a convex surface, the object side surface and the image side surface of the sixth lens E6 are respectively a convex surface and a concave surface, the object side surface and the image side surface of the seventh lens E7 are respectively a concave surface and a convex surface, and the object side surface and the image side surface of the eighth lens E8 are respectively a concave surface and a concave surface.

[0222] The fifth spacer P5, the fifth front auxiliary spacer P5b and the fifth rear auxiliary spacer P5c are arranged between the fifth lens E5 and the sixth lens E6, the fifth spacer P5 is in direct contact with the image side surface of the fifth lens E5, the fifth front auxiliary spacer P5b is in direct contact with the image side surface of the fifth spacer P5, and the fifth rear auxiliary spacer P5c is in direct contact with the image side surface of the fifth front auxiliary spacer P5b. The sixth spacer P6 is arranged between the sixth lens E6 and the seventh lens E7, and the sixth spacer P6 is in direct contact with the image side surface of the sixth lens E6. The seventh spacer P7 is arranged between the seventh lens E7 and the eighth lens E8, and the seventh spacer P7 is in direct contact with the image side surface of the seventh lens E7.

[0223] Table 10 shows a table of basic parameters of the optical imaging lens of the fourth embodiment, wherein the units of the radius of curvature and thickness are both millimeters (mm).

[0224] Table 10: Basic parameters of the optical imaging lens of the fourth embodiment

[0225] Face number Surface type Radius of curvature thickness Material Cone coefficient OBJ Spherical endless endless STO Spherical endless 0.2231 S1 Aspheric -15.7751 0.7661 1.55，56.1 2.1999 S2 Aspheric -6.9227 0.0290 0.0562 S3 Aspheric 6.7480 1.0481 1.59，28.2 -0.1089 S4 Aspheric 6.2877 0.9802 -0.6090 S5 Aspheric -61.9178 0.5996 1.67，20.4 98.9665 S6 Aspheric 20.9733 0.8414 0.3654 S7 Aspheric 9.2983 2.8000 1.55，56.1 -0.6915 S8 Aspheric -5.3323 0.5247 -0.0245 S9 Aspheric -2.9012 0.4200 1.61，28.3 -1.0349 S10 Aspheric -4.5142 1.2952 -0.0231 S11 Aspheric 11.2854 1.1687 1.68，19.2 -1.3661 S12 Aspheric 21.2339 0.5596 -1.3620 S13 Aspheric -17.2303 0.9926 1.55，56.1 0.0000 S14 Aspheric -18.1538 1.7477 -1.7934 S15 Aspheric -7.4745 0.5306 1.54，55.7 -1.0944 S16 Aspheric 27.5270 0.8360 0.0000 S17 Spherical endless 0.2100 1.52，64.2 S18 Spherical endless 0.7900 S19 Spherical endless

[0226] In the fourth embodiment, the object side surface and the image side surface of any lens from the first lens E1 to the seventh lens E7 are both aspherical surfaces, and the surface shape x of each aspherical lens can be defined by but not limited to the following aspherical surface formula:

[0227]

[0228] Wherein, x is the distance from the vertex of the aspheric surface when the aspheric surface is at a height of h along the optical axis: c is the paraxial curvature of the aspheric surface, c=1R (i.e., the paraxial curvature c is the reciprocal of the radius of curvature R in Table 10 above): k is the cone coefficient: Ai is the correction coefficient of the i-th order of the aspheric surface. Table 11 below gives the high-order coefficients A4, A6, A8, A10, A12, A14, A16, A18 and A20 that can be used for each aspheric mirror surface S1-S16 in the fourth embodiment.

[0229] Table 11: Table of aspherical coefficients of the aspherical mirror surface of the optical imaging lens of the fourth embodiment

[0230]

[0231]

[0232] Table 12 shows the size data table of the spacers of the optical imaging lens of the first example and the second example of the fourth embodiment, wherein the units of the size data are all millimeters (mm). The two examples respectively provide the first lens barrel, the second lens barrel, the first spacer P1, the second spacer P2, the third spacer P3, the fifth spacer P5, the sixth spacer P6 and the seventh spacer P7 of two different sizes and spacing distances.

[0233] Table 12: Dimensional data of the spacer of the optical imaging lens of the fourth embodiment

[0234] Example parameters 4-1 4-2 d1s(mm) 7.300 7.437 d1m(mm) 7.300 8.073 D1m(mm) 9.200 8.959 d2s(mm) 6.980 6.980 d3s(mm) 7.400 7.160 d3m(mm) 7.400 7.160 D3s(mm) 9.800 8.407 d5s(mm) 8.060 8.080 d5m(mm) 8.060 8.080 D5m(mm) 10.956 9.518 d6m(mm) 12.215 10.215 D6s(mm) 13.908 12.552 d7s(mm) 11.669 11.669 D7s(mm) 15.700 15.300 d10m(mm) 10.954 10.954 D20s(mm) 11.503 11.466 CP1(mm) 0.022 1.052 EP01(mm) 1.006 1.006 EP12(mm) 1.866 0.836 EP56(mm) 1.552 1.552 EP67(mm) 1.504 1.504 EP205(mm) 1.937 2.087 L10(mm) 6.797 6.797

[0235] Fig. 8A axial chromatic aberration curve of the optical imaging lens of the fourth embodiment is shown, Figure 8B FIG. 4 shows an astigmatism curve of the optical imaging lens of the fourth embodiment. Figure 8C Graph showing the distortion curve of the optical imaging lens of the fourth embodiment, Fig.8D The chromatic aberration curve of the fourth embodiment is shown. FIG. 8A to FIG. 8D It can be seen that the optical imaging lens provided in the fourth embodiment has good imaging quality.

[0236] The optical parameters of the optical imaging lenses of the first embodiment, the second embodiment, the third embodiment and the fourth embodiment are as follows:

[0237]

[0238] The optical imaging lenses of the first embodiment, the second embodiment, the third embodiment and the fourth embodiment satisfy the following relationship:

[0239] Conditional / Example 1-1 1-2 2-1 2-2 3-1 3-2 4-1 4-2 d5s / R9 -3.13 -3.13 -3.29 -3.29 -2.90 -3.10 -2.78 -2.79 d5m / R10 -2.38 -2.28 -2.02 -2.02 -1.83 -2.13 -1.79 -1.79 f5 / (EP205+CT5) -5.55 -5.55 -4.46 -4.16 -5.26 -5.08 -6.30 -5.92 R1 / d1s -1.85 -1.85 -1.81 -1.81 -1.95 -1.95 -2.16 -2.12 R2 / (D1m-d1m) -3.92 -6.99 -4.03 -4.03 -3.75 -3.40 -3.64 -7.81 EP12 / (f1*T12) 2.50 2.50 2.35 2.33 1.80 1.80 2.93 1.32 (CT1+CP1) / EP01 0.91 0.91 0.81 0.81 0.83 0.83 0.78 1.81 R6 / (D3s-d3s) 9.48 8.43 8.61 16.94 10.35 10.35 8.74 16.82 R5 / (d2s*N3) -11.22 -11.22 -6.87 -6.87 -11.03 -11.03 -5.32 -5.32 R7 / d3m 1.49 1.49 1.52 1.52 1.47 1.47 1.26 1.30 R8 / |d10m-D20s| -4.91 -9.34 -5.54 -5.85 -10.05 -10.53 -9.71 -10.41 (T56+CT6) / EP56 2.63 2.63 1.97 2.82 1.33 1.93 1.59 1.59 (R11*D5m) / (R12*D6s) 0.73 0.67 1.02 0.96 0.91 0.90 0.42 0.40 EP67 / T67 0.80 0.80 0.94 0.84 1.15 1.15 2.69 2.69 (R13 / d6m)*(R14 / d7s) 0.98 1.00 0.76 0.90 1.60 1.60 2.19 2.62 R15 / (D7s-d7s) -6.12 -4.41 -6.26 -4.57 -6.66 -3.84 -1.85 -2.06 L10 / CT4 2.87 2.87 2.85 2.85 2.66 2.66 2.43 2.43 f4 / CT4 2.45 2.45 2.74 2.74 2.55 2.55 2.38 2.38 T78 / EP67 3.03 3.03 2.35 2.63 2.23 2.23 1.16 1.16 T78 / CT8 2.73 2.73 3.00 3.00 2.81 2.81 3.29 3.29

[0240] The technical features of the above embodiment can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above embodiment are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0241] The above embodiments only express several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. An optical imaging lens, characterized in that: include: A first optical assembly, the first optical assembly comprising a first lens barrel, a first lens, a second lens, a third lens and a fourth lens, wherein the first lens, the second lens, the third lens and the fourth lens are sequentially arranged in the first lens barrel along an optical path from an object side to an image side; as well as a second optical assembly, the second optical assembly comprising a second lens barrel, a fifth lens, a sixth lens, a seventh lens, and an eighth lens, the second lens barrel being adjustably arranged on the image side of the first lens barrel, and the fifth lens, the sixth lens, the seventh lens, and the eighth lens being arranged in sequence along an optical path from the object side to the image side in the second lens barrel; as well as at least one spacer, the spacers comprising a fifth spacer, the fifth spacer being disposed between the fifth lens and the sixth lens and in direct contact with the image side surface of the fifth lens; The optical imaging lens satisfies the relationship: -3.3<d5s / R9<-2.75; and -2.4<d5m / R10<-1.75; Among them, R9 is the curvature radius of the object side surface of the fifth lens, R10 is the curvature radius of the image side surface of the fifth lens, d5s is the inner diameter of the object side surface of the fifth spacer, and d5m is the inner diameter of the image side surface of the fifth spacer.

2. The optical imaging lens according to claim 1, wherein: The optical imaging lens satisfies the relationship: -6.35<f5 / (EP205+CT5)<-4.15; Wherein, f5 is the effective focal length of the fifth lens, CT5 is the center thickness of the fifth lens on the optical axis, and EP205 is the interval between the object side end surface of the second lens barrel and the fifth spacer.

3. The optical imaging lens according to claim 1, wherein: The spacer further includes a first spacer disposed between the first lens and the second lens, the first spacer being in direct contact with the image side surface of the first lens; The optical imaging lens satisfies the relationship: -2.2<R1 / d1s<-1.8; Wherein, R1 is the curvature radius of the object side surface of the first lens, and d1s is the inner diameter of the object side surface of the first spacer.

4. The optical imaging lens according to claim 1, wherein: The spacer further includes a first spacer disposed between the first lens and the second lens, the first spacer being in direct contact with the image side surface of the first lens; The optical imaging lens satisfies the relationship: -7.85<R2 / (D1m-d1m)<-3.35; Wherein, d1m is the inner diameter of the image side surface of the first spacer, D1m is the outer diameter of the image side surface of the first spacer, and R2 is the curvature radius of the image side surface of the first lens.

5. The optical imaging lens according to claim 1, wherein: The spacer further includes a first spacer disposed between the first lens and the second lens and a second spacer disposed between the second lens and the third lens, the first spacer directly contacts the image side surface of the first lens, and the second spacer directly contacts the image side surface of the second lens; The optical imaging lens satisfies the relationship: 1.30mm -1 <EP12 / (f1*T12)<2.95mm -1 ; Wherein, f1 is the effective focal length of the first lens, T12 is the air distance between the first lens and the second lens on the optical axis, and EP12 is the distance between the first spacer and the second spacer.

6. The optical imaging lens according to claim 1, wherein: The spacer further includes a first spacer disposed between the first lens and the second lens, the first spacer being in direct contact with the image side surface of the first lens; The optical imaging lens satisfies the relationship: 0.75<(CT1+CP1) / EP01<1.85; Wherein, CP1 is the maximum thickness of the first spacer, CT1 is the center thickness of the first lens on the optical axis, and EP01 is the distance between the object side end surface of the first lens barrel and the first spacer.

7. The optical imaging lens according to claim 1, wherein: The spacer further includes a third spacer disposed between the third lens and the fourth lens, the third spacer being in direct contact with the image side surface of the third lens; The optical imaging lens satisfies the relationship: 8.4<R6 / (D3s-d3s)<16.5; Wherein, D3s is the outer diameter of the object side surface of the third spacer, d3s is the inner diameter of the object side surface of the third spacer, and R6 is the curvature radius of the image side surface of the third lens.

8. The optical imaging lens according to claim 1, wherein: The spacer further includes a second spacer disposed between the second lens and the third lens and a third spacer disposed between the third lens and the fourth lens, the second spacer being in direct contact with the image side surface of the second lens; the third spacer being in direct contact with the image side surface of the third lens; The optical imaging lens satisfies the relationship: -11.25<R5 / (d2s*N3)<-5.30; Wherein, R5 is the curvature radius of the object side surface of the third lens, d2s is the inner diameter of the object side surface of the second spacer, and N3 is the refractive index of the third lens.

9. The optical imaging lens according to claim 1, wherein: The spacer further includes a third spacer disposed between the third lens and the fourth lens, the third spacer being in direct contact with the image side surface of the third lens; The optical imaging lens satisfies the relationship: 1.25<R7 / d3m<1.55; Wherein, R7 is the curvature radius of the object side surface of the fourth lens, and d3m is the inner diameter of the image side surface of the third spacer.

10. The optical imaging lens according to claim 1, wherein: The optical imaging lens satisfies the relationship: -10.55<R8 / |d10m-D20s|<-4.95; Wherein, R8 is the curvature of the image side surface of the fourth lens, d10m is the inner diameter of the image side end surface of the first lens barrel closest to the imaging surface, and D20s is the outer diameter of the object side end surface of the second lens barrel closest to the object side.

11. The optical imaging lens according to claim 1, wherein: The spacer further includes a sixth spacer disposed between the sixth lens and the seventh lens, the sixth spacer being in direct contact with the image side surface of the sixth lens; The optical imaging lens satisfies the relationship: 1.30<(T56+CT6) / EP56<2.85; Wherein, T56 is the air spacing between the fifth lens and the sixth lens on the optical axis, CT6 is the center thickness of the sixth lens on the optical axis, and EP56 is the spacing between the fifth spacer and the sixth spacer.

12. The optical imaging lens according to claim 1, wherein: The spacer further includes a sixth spacer disposed between the sixth lens and the seventh lens, the sixth spacer being in direct contact with the image side surface of the sixth lens; the optical imaging lens satisfies the relationship: 0.35<(R11*D5m) / (R12*D6s)<1.05; Among them, R11 is the curvature radius of the object side surface of the sixth lens, R12 is the curvature radius of the image side surface of the sixth lens, D5m is the outer diameter of the image side surface of the fifth spacer, and D6s is the outer diameter of the object side surface of the sixth spacer.

13. The optical imaging lens according to claim 1, wherein: The spacer further includes a sixth spacer disposed between the sixth lens and the seventh lens and a seventh spacer disposed between the seventh lens and the eighth lens, the sixth spacer being in direct contact with the image side surface of the sixth lens; the seventh spacer being in direct contact with the image side surface of the seventh lens; The optical imaging lens satisfies the relationship: 0.75<EP67 / T67<2.7; Wherein, EP67 is the interval between the sixth spacer and the seventh spacer, and T67 is the air interval between the sixth lens and the seventh lens on the optical axis.

14. The optical imaging lens according to claim 1, wherein: The spacer further includes a seventh spacer disposed between the seventh lens and the eighth lens, the seventh spacer being in direct contact with the image side surface of the seventh lens; The optical imaging lens satisfies the relationship: -6.65<R15 / (D7s-d7s)<-1.85; Wherein, D7s is the outer diameter of the object side surface of the seventh spacer, d7s is the inner diameter of the object side surface of the seventh spacer, and R15 is the curvature radius of the object side surface of the eighth lens.

15. The optical imaging lens according to claim 1, wherein: The first lens has positive optical power, the second lens has positive optical power or negative optical power, the third lens has negative optical power, the fourth lens has positive optical power, the fifth lens has negative optical power, the sixth lens has positive optical power or negative optical power, the seventh lens has positive optical power or negative optical power, and the eighth lens has positive optical power or negative optical power.

16. The optical imaging lens according to claim 1, wherein: The object side surface and the image side surface of the first lens are concave and convex surfaces respectively, the object side surface and the image side surface of the second lens are convex and concave surfaces respectively, the object side surface and the image side surface of the third lens are concave and concave surfaces respectively, the object side surface and the image side surface of the fourth lens are convex and convex surfaces respectively, the object side surface and the image side surface of the fifth lens are concave and convex surfaces respectively, the object side surface and the image side surface of the sixth lens are convex and concave surfaces respectively, the object side surface and the image side surface of the seventh lens are concave and convex surfaces respectively, and the object side surface and the image side surface of the eighth lens are concave and concave surfaces respectively.

17. The optical imaging lens according to claim 1, wherein: The spacer further includes a sixth spacer disposed between the sixth lens and the seventh lens and a seventh spacer disposed between the seventh lens and the eighth lens, the sixth spacer is in direct contact with the image side surface of the sixth lens, and the seventh spacer is in direct contact with the image side surface of the seventh lens; the optical imaging lens satisfies the relationship: 0.75<(R13 / d6m)*(R14 / d7s)<2.65; Among them, R13 is the curvature radius of the object side surface of the seventh lens, R14 is the curvature radius of the image side surface of the seventh lens, d6m is the inner diameter of the image side surface of the sixth spacer, and d7s is the inner diameter of the object side surface of the seventh spacer.

18. The optical imaging lens according to claim 1, wherein: The optical imaging lens satisfies the relationship: 2.40<L10 / CT4<2.90; and 2.35<f4 / CT4<2.75; Wherein, L10 is the maximum height of the first lens barrel, CT4 is the center thickness of the fourth lens on the optical axis, and f4 is the effective focal length of the fourth lens.

19. The optical imaging lens according to claim 1, wherein: The spacer further includes a sixth spacer disposed between the sixth lens and the seventh lens and a seventh spacer disposed between the seventh lens and the eighth lens, the sixth spacer is in direct contact with the image side surface of the sixth lens, and the seventh spacer is in direct contact with the image side surface of the seventh lens; the optical imaging lens satisfies the relationship: 1.15<T78 / EP67<3.05; and 2.7<T78 / CT8<3.3; Wherein, T78 is the air spacing between the seventh lens and the eighth lens on the optical axis, CT8 is the center thickness of the eighth lens on the optical axis, and EP67 is the spacing between the sixth spacer and the seventh spacer.

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