Optical imaging lens

Abstract

The utility model relates to an optical imaging lens comprising a first optical assembly which comprises a first lens barrel, 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 utility model relates to the technical field of optical elements, in particular to an optical imaging lens. Background Art

[0002] With the popularization of mobile phones, mobile phone cameras are gradually replacing professional camera equipment such as single-lens reflex cameras due to their convenience and speed. However, due to the limited internal space of mobile phones, the main camera lens of mobile phones requires a new architecture to meet the height reduction requirements of the lens; in addition, since the image plane of the main camera is getting larger and larger, the design of traditional main camera lenses cannot meet the performance requirements in the macro state, and lenses with large image planes need to design other solutions to improve macro performance.

[0003] At present, traditional mobile phone main cameras can meet the large image plane demand by stretching the light height, but it is easy to cause the light to be imaged blurrily on the image plane, resulting in problems such as image blur and light leakage.

[0004] At present, the best shooting focal length of single-lens reflex cameras is from 28mm to 35mm, but traditional mobile phone main camera lenses cannot meet this shooting focal length, so it is necessary to lengthen the shooting focal length of mobile phone main camera lenses. Summary of the Utility Model

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

[0006] An optical imaging lens, comprising:

[0007] A first optical component, the first optical component includes a first lens barrel, a first lens, a second lens, a third lens and a fourth lens, and the first lens, the second lens, the third lens and the fourth lens are sequentially arranged in the first lens barrel along the optical path from the object side to the image side; and

[0008] A second optical component, the second optical component includes a second lens barrel, a fifth lens, a sixth lens, a seventh lens, an eighth lens, the second lens barrel is 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 are sequentially arranged in the second lens barrel along the optical path from the object side to the image side; and

[0009] At least one spacer, the spacer includes a fifth spacer, the fifth spacer is arranged between the fifth lens and the sixth lens and is 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] Wherein, R9 is the radius of curvature of the object side surface of the fifth lens, R10 is the radius of curvature 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 relational expression:

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

[0016] Wherein, f5 is the effective focal length of the fifth lens, CT5 is the central 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, and the first spacer is in direct contact with the image side surface of the first lens;

[0018] The optical imaging lens satisfies the relational expression:

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

[0020] Wherein, R1 is the radius of curvature 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, and the first spacer is in direct contact with the image side surface of the first lens;

[0022] The optical imaging lens satisfies the relational expression:

[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 radius of curvature 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 is in direct contact with the image side surface of the first lens, and the second spacer is in direct contact with the image side surface of the second lens;

[0026] The optical imaging lens satisfies the relational expression:

[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 interval between the first lens and the second lens on the optical axis, and EP12 is the interval 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, and the first spacer is in direct contact with the image side surface of the first lens;

[0030] The optical imaging lens satisfies the relational expression:

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

[0032] Wherein, CP1 is the maximum thickness of the first spacer, CT1 is the central thickness of the first lens on the optical axis, and EP01 is the interval 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 relational expression:

[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 relational expression:

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

[0040] Wherein, R5 is the radius of curvature 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 relational expression:

[0043] 1.25 < R7 / d3m < 1.55;

[0044] Wherein, R7 is the radius of curvature 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 relational expression:

[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 end surface of the image side of the first lens barrel closest to the imaging surface, and D20s is the outer diameter of the end surface of the object side 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 relational expression:

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

[0051] Wherein, T56 is the air gap between the fifth lens and the sixth lens on the optical axis, CT6 is the central thickness of the sixth lens on the optical axis, and EP56 is the gap 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 relational expression:

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

[0054] Wherein, R11 is the radius of curvature of the object side surface of the sixth lens, R12 is the radius of curvature 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 relational expression:

[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. The seventh spacer is in direct contact with the image side surface of the seventh lens;

[0060] The optical imaging lens satisfies the relational expression:

[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 radius of curvature of the object side surface of the eighth lens.

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

[0064] In one embodiment, the object side and the image side of the first lens are concave and convex respectively, the object side and the image side of the second lens are convex and concave respectively, the object side and the image side of the third lens are concave and concave respectively, the object side and the image side of the fourth lens are convex and convex respectively, the object side and the image side of the fifth lens are concave and convex respectively, the object side and the image side of the sixth lens are convex and concave respectively, the object side and the image side of the seventh lens are concave and convex respectively, and the object side and the image side of the eighth lens are concave and concave 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 of the sixth lens, and the seventh spacer is in direct contact with the image side of the seventh lens; the optical imaging lens satisfies the relational expression:

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

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

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

[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 central 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 of the sixth lens, and the seventh spacer is in direct contact with the image side of the seventh lens; the optical imaging lens satisfies the relational expression:

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

[0074] 2.7 < T78 / CT8 < 3.3;

[0075] Among them, T78 is the air gap between the seventh lens and the eighth lens on the optical axis, CT8 is the central thickness of the eighth lens on the optical axis, and EP67 is the gap between the sixth spacer and the seventh spacer.

[0076] The above optical imaging lens is an eight-element internal focusing lens. By controlling the curvature radii of the object side and the image side of the fifth lens, the height of the light can be increased to meet the design requirements of a large image plane. The fifth spacer can block light to converge the light, enabling the light to be normally transmitted and clearly imaged on the image plane, avoiding problems such as image blur and light leakage. Brief Description of the Drawings

[0077] Figure 1A Schematic structural diagram of the optical imaging lens provided by the first example of the first embodiment of the present application;

[0078] Figure 1B Schematic structural diagram of the optical imaging lens provided by the second example of the first embodiment of the present application;

[0079] Figure 1C Schematic diagram showing the dimensions of the optical imaging lens according to the above first embodiment of the present application;

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

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

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

[0083] Figure 2D Schematic diagram showing the lateral chromatic aberration curve of the optical imaging lens according to the above first embodiment of the present application;

[0084] Figure 3A Schematic structural diagram of the optical imaging lens provided by the first example of the second embodiment of the present application;

[0085] Figure 3B Schematic structural diagram of the optical imaging lens provided by the second example of the second embodiment of the present application;

[0086] Figure 4A Schematic diagram showing the axial chromatic aberration curve of the optical imaging lens according to the above second embodiment of the present application;

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

[0088] Figure 4C Shows the distortion curve graph of the optical imaging lens according to the above-mentioned second embodiment of the present application;

[0089] Figure 4D Shows the longitudinal chromatic aberration curve graph of the optical imaging lens according to the above-mentioned second embodiment of the present application;

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

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

[0092] Figure 6A Shows the axial chromatic aberration curve graph of the optical imaging lens according to the above-mentioned third embodiment of the present application;

[0093] Figure 6B Shows the astigmatism curve graph of the optical imaging lens according to the above-mentioned third embodiment of the present application;

[0094] Figure 6C Shows the distortion curve graph of the optical imaging lens according to the above-mentioned third embodiment of the present application;

[0095] Figure 6D Shows the longitudinal chromatic aberration curve graph of the optical imaging lens according to the above-mentioned third embodiment of the present application;

[0096] Figure 7A Schematic structural diagram of the optical imaging lens provided for the first example of the fourth embodiment of the present application;

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

[0098] Figure 8A Shows the axial chromatic aberration curve graph of the optical imaging lens according to the above-mentioned fourth embodiment of the present application;

[0099] Figure 8B Shows the astigmatism curve graph of the optical imaging lens according to the above-mentioned fourth embodiment of the present application;

[0100] Figure 8C Shows the distortion curve graph of the optical imaging lens according to the above-mentioned fourth embodiment of the present application;

[0101] Figure 8D Shows the longitudinal chromatic aberration curve graph of the optical imaging lens according to the above-mentioned fourth embodiment of the present application;

[0102] Figure 9A Shows the MTF graph when the optical imaging lens according to the above embodiments of the present application satisfies the relationships d5s / R9 = -3.13 and d5m / R10 = -2.38;

[0103] Figure 9B Shows the MTF graph when the optical imaging lens according to the above embodiments of the present application satisfies the relationships d5s / R9 = -3.13 and d5m / R10 = -2.38;

[0104] Figure 9C Shows the MTF graph when the optical imaging lens according to the above embodiments of the present application satisfies the relationships d5s / R9 = -3.13 and d5m / R10 = -2.38.

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

[0106] In order to make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will describe in detail the specific implementation manners of the present utility model with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0107] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

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

[0109] In the present utility model, unless otherwise clearly specified and limited, terms such as "mounted", "connected", "connected to", "fixed" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0110] In the present utility model, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on the top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "under the bottom of" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

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

[0112] In an exemplary embodiment, the outer peripheral surface of at least one spacer element in the spacer element group may have a trimmed edge portion and an untrimmed edge portion, and the outer diameter of the trimmed edge portion of the spacer element may be smaller than the outer diameter of the untrimmed edge portion of the spacer element. When the outer peripheral surface of the spacer element has a trimmed edge portion, the outer diameter of the spacer element generally refers to the outer diameter of the untrimmed edge 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 part of the untrimmed edge portion of the spacer element that is 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 part of the untrimmed edge portion of the spacer element that is closest to the image side.

[0113] In the present utility model, the given optical embodiments can be simulated and restored by optical software such as zemax, codev... etc. Among them, the optical software is preferably codev, and the optical surface type can be adjusted according to the surface type models provided with the corresponding software so as to adapt to the optical imaging lens of the present utility model.

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

[0115] Specifically, please refer to Figures 1A to 1C, the optical imaging lens includes a first optical component, a second optical component, and at least one spacer. The first optical component includes a first lens barrel, a first lens E1, a second lens E2, a third lens E3, and a fourth lens E4. 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 includes a second lens barrel, a fifth lens E5, a sixth lens E6, a seventh lens E7, and an eighth lens E8. 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 spacer includes a fifth spacer P5. The fifth spacer P5 is arranged between the fifth lens E5 and the sixth lens E6 and is in direct contact with the image side surface of the fifth lens E5. The optical imaging lens satisfies the relational expressions: -3.3 < d5s / R9 < -2.75 and -2.4 < d5m / R10 < -1.75; where 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-element internal focusing lens, and focusing can be achieved by moving the second lens barrel. Designing the optical imaging lens according to the above relational expressions can make light converge to form an image. As the first lens of the second optical component, controlling the curvature radius of the object side surface of the fifth lens E5 can play a role in converging light, and controlling the curvature radius of the image side surface of the fifth lens E5 can play a role in diverging light, thereby being able to raise the light height and meet the design requirements of a large image plane. The fifth spacer P5 can block light to converge the light, enabling the light to be normally transmitted and clearly imaged on the image plane, avoiding problems such as image blurring and light leakage.

[0117] As Figure 9A shown is the MTF graph of the optical imaging lens when d5s / R9 = -3.13 and d5m / R10 = -2.38. When the cut-off frequencies of the optical imaging lens are 110 lp / mm and 220 lp / mm respectively, the meridional direction TAN and the sagittal direction SAG show a smooth downward trend from the center to both sides in the range of the actual image height (REAL IMAGE HEIGHT) from -5 mm to 5 mm, and the curve has no pits and no sharp drops. Therefore, when the optical imaging lens satisfies the range set by the relational expressions -3.3 < d5s / R9 < -2.75 and -2.4 < d5m / R10 < -1.75, the optical imaging lens has good imaging quality. As Figure 9BThe figure shows the MTF graph of the optical imaging lens when it satisfies the relationships d5s / R9 = -3.61 and d5m / R10 = -2.54. When the cut-off frequencies of the optical imaging lens are 110 lp / mm and 220 lp / mm respectively, the meridional direction TAN and the sagittal direction SAG only show a trend of decreasing from the center to both sides within the range of the actual image height from -5 mm to 5 mm, but the overall curve is not smooth and there are many pits. Therefore, when the optical imaging lens is outside the range set by the relationships -3.3 < d5s / R9 < -2.75 and -2.4 < d5m / R10 < -1.75, the imaging quality of the optical imaging lens is poor. As Figure 9C The figure shows the MTF graph of the optical imaging lens when it satisfies the relationships d5s / R9 = -2.43 and d5m / R10 = -1.42. When the cut-off frequencies of the optical imaging lens are 110 lp / mm and 220 lp / mm respectively, the meridional direction TAN and the sagittal direction SAG only show a trend of decreasing from the center to both sides within the range of the actual image height from -5 mm to 5 mm, but the overall curve is not smooth and there are many steep drops. Therefore, when the optical imaging lens is outside the range set by the relationships -3.3 < d5s / R9 < -2.75 and -2.4 < d5m / R10 < -1.75, the imaging quality of the optical imaging lens is poor.

[0118] Optionally, as Figure 1A 、 Figure 1B and Figure 1C 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 central thickness of the fifth lens E5 on the optical axis, and EP205 is the distance between the object-side end face of the second lens barrel and the fifth spacer P5.

[0119] Designing the optical imaging lens according to the above relationship can clarify the contour of the fifth lens E5, enable the fifth lens E5 to have the effect of diverging light, thereby further increasing the height of the light entering the second optical component to meet the design requirements of a large image plane.

[0120] Optionally, as Figure 1A 、 Figure 1B and Figure 1C 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] According to the above relationship, designing the optical imaging lens can clarify the sizes of the object side and the image side of the first lens E1. By using the inner diameter of the first spacer P1, the marginal rays can be effectively converged and the light incident amount of the lens can be controlled, ensuring that the optical parameters of the optical imaging lens meet the design requirements.

[0122] Optionally, as Figure 1A 、 Figure 1B and Figure 1C 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 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 of the first spacer P1, D1m is the outer diameter of the image side of the first spacer P1, and R2 is the radius of curvature of the image side of the first lens E1.

[0123] According to the above relationship, designing the optical imaging lens, the inner diameter and the outer diameter of the image side of the first spacer P1 constitute the width of the first spacer P1, and jointly affect the light incident amount and the ray height of the second lens E2 with the radius of curvature of the image side of the first lens E1. In addition, through the blocking effect of the first spacer P1, the light incident amount of the structural part (the part for fixedly connecting with the lens barrel) of the second lens E2 can also be reduced, avoiding the generation of stray light in the second lens E2.

[0124] Optionally, as Figure 1A 、 Figure 1B and Figure 1C 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 of the first lens E1, and the second spacer P1 is in direct contact with the image side 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 gap between the first lens E1 and the second lens E2 on the optical axis, and EP12 is the gap between the first spacer P1 and the second spacer P2.

[0125] Design the optical imaging lens according to the above relational expressions, which can determine the thickness of the structural parts of the first lens E1 and the second lens E2, and lock the lens profile of the first lens E1, thereby reducing the processing and demolding difficulty of 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 light incident amount of 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] Optionally, as Figure 1A , Figure 1B and Figure 1C 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 relational expression 0.75 < (CT1 + CP1) / EP01 < 1.85. Wherein, CP1 is the maximum thickness of the first spacer P1, CT1 is the central thickness of the first lens E1 on the optical axis, and EP01 is the gap between the object side end surface of the first lens barrel and the first spacer P1.

[0127] Design the optical imaging lens according to the above relational expressions, which can lock the total thickness of the first lens E1 and the first lens barrel, so as to ensure that the first lens barrel will not be deformed during the assembly process of the first optical component, thereby improving the assembly stability of the first lens E1. If the assembly of the first lens E1 is unstable, it will lead to abnormal assembly of the first optical component, affecting the design parameters and performance of the optical imaging lens.

[0128] Optionally, as Figure 1A , Figure 1B and Figure 1C 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 relational expression 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 curvature radius of the image side surface of the third lens E3.

[0129] The optical imaging lens is designed according to the above relationship, which can determine the amount of light entering the fourth lens E4 from the light output by the third lens E3, as well as the width of the third spacer P3. By controlling the amount of light entering the fourth lens E4, the light transmission efficiency 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] Optionally, as Figure 1A , Figure 1B and Figure 1C 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 of the second lens E2; the third spacer P3 is in direct contact with the image side of the third lens E3; the optical imaging lens satisfies the relationship -11.25 < R5 / (d2s * N3) < -5.30. Wherein, R5 is the curvature radius of the object side of the third lens E3, d2s is the inner diameter of the object side of the second spacer P2, and N3 is the refractive index of the third lens E3.

[0131] The optical imaging lens is designed according to the above relationship, which can determine the amount of light entering the third lens E3 and the propagation of the light entering the third lens E3, and can ensure that while ensuring the light transmission efficiency, 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 are reduced.

[0132] Optionally, as Figure 1A , Figure 1B and Figure 1C shown, in one embodiment, the spacer further includes a third spacer P3 disposed between the third lens E3 and the fourth lens E4. The third spacer P3 is in direct contact with the image side 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 of the fourth lens E4, and d3m is the inner diameter of the image side of the third spacer P3.

[0133] The optical imaging lens is designed according to the above relationship, which can confirm the incident aperture of the light of the fourth lens E4 and the transmission state of the incident light on the object side of the fourth lens E4 to reduce the loss in the light transmission process, and can also control the number of 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.

[0134] Optionally, asFigure 1A , Figure 1B and Figure 1C As shown in Figure 1B and Figure 1C , in one embodiment, the optical imaging lens satisfies the relational expression -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 relational expression can ensure that the first lens barrel and the second lens barrel do not interfere even when the distance between them is the smallest, thus ensuring that the first optical component and the second optical component can be assembled normally. In addition, the smaller the curvature radius of the image side surface of the fourth lens E4, the shorter the structural part of the fourth lens E4 under the same outer diameter, so that the stray light generated by the structural part of the fourth lens E4 can be reduced, and the appropriate bearing width of the fourth lens E4 can be ensured.

[0136] Optionally, as shown in Figure 1A , Figure 1B and Figure 1C As shown in Figure 1A , Figure 1B and Figure 1C , 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 relational expression 1.30 < (T56 + CT6) / EP56 < 2.85. Wherein, T56 is the air gap between the fifth lens E5 and the sixth lens E6 on the optical axis, CT6 is the central thickness of the sixth lens E6 on the optical axis, and EP56 is the gap between the fifth spacer P5 and the sixth spacer P6.

[0137] Designing the optical imaging lens according to the above relational expression can ensure 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, so that the sixth lens E6 as a whole has a concave mirror structure to diverge the light transmission, thereby improving the overall height of the light and meeting the image height design requirements.

[0138] Optionally, as shown in 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 0.35 < (R11 * D5m) / (R12 * D6s) < 1.05. Wherein, R11 is the curvature radius of the object side surface of the sixth lens E6, R12 is the curvature radius 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] Designing the optical imaging lens according to the above relationship can determine the contour size of the sixth lens E6. The larger the outer diameter of the object side surface of the sixth spacer P6, the larger the outer diameter of the sixth lens E6, and the smaller the risk of generating stray light. When the outer diameter of the sixth lens E6 becomes larger, the space of the structural part of the sixth lens E6 becomes larger, the improvement space of stray light becomes larger, and more options can be selected.

[0140] Optionally, as Figure 1A 、 Figure 1B and Figure 1C 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. Wherein, 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] Designing the optical imaging lens according to the above relationship can determine the structural part of the seventh lens E7. According to the contour 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, as well as 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, the easier it is to process and demold.

[0142] Optionally, as 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 of the sixth lens E6, and the seventh spacer P7 is in direct contact with the image side of the seventh lens E7. The optical imaging lens satisfies the relation 0.75 < (R13 / d6m)*(R14 / d7s) < 2.65. Here, R13 is the curvature radius of the object side of the seventh lens E7, R14 is the curvature radius of the image side of the seventh lens E7, d6m is the inner diameter of the image side of the sixth spacer P6, and d7s is the inner diameter of the object side of the seventh spacer P7.

[0143] Designing the optical imaging lens according to the above relation can determine the incident aperture of the light rays exiting from the sixth lens E6 and entering the seventh lens E7, as well as the exit aperture of the light rays exiting from the seventh lens E7. In addition, according to the curvature radius of the object side of the seventh lens E7 and the curvature radius of the image side of the seventh lens E7, the light propagation mode in the seventh lens E7 can also be determined, enabling the seventh lens E7 to have a diverging effect on the light rays.

[0144] Optionally, as Figure 1A 、 Figure 1B and Figure 1C shown, in one embodiment, the spacer further includes a seventh spacer P7 disposed between the seventh lens E7 and the eighth lens E8. The seventh spacer P7 is in direct contact with the image side of the seventh lens E7. The optical imaging lens satisfies the relation -6.65 < R15 / (D7s - d7s) < -1.85. Here, D7s is the outer diameter of the object side of the seventh spacer P7, d7s is the inner diameter of the object side of the seventh spacer P7, and R15 is the curvature radius of the object side of the eighth lens E8.

[0145] Designing the optical imaging lens according to the above relation can determine the width of the seventh spacer P7, thereby achieving a 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 of the eighth lens E8, the incident light rays can also be diverged, thereby further raising the height of the exit light rays of the eighth lens E8 and ensuring that the overall image height of the second optical component can meet the design requirements.

[0146] Optionally, as Figure 1A 、 Figure 1B and Figure 1CAs shown, in one embodiment, the optical imaging lens satisfies the relationships 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 central thickness of the fourth lens E4 on the optical axis, and f4 is the effective focal length of the fourth lens E4.

[0147] Designing the optical imaging lens according to the above relationships can ensure the maximum outer diameter of the first lens barrel to avoid interference between the first lens barrel and the second lens barrel, and can also ensure that the lens size of the fourth lens E4 can be processed, and the thickness of the first lens barrel meets the minimum thickness requirements for injection molding.

[0148] Optionally, as Figure 1A , Figure 1B and Figure 1C 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 relationships 1.15 < T78 / EP67 < 3.05 and 2.7 < T78 / CT8 < 3.3. Wherein, T78 is the air gap between the seventh lens E7 and the eighth lens E8 on the optical axis, CT8 is the central thickness of the eighth lens E8 on the optical axis, and EP67 is the gap between the sixth spacer P6 and the seventh spacer P7.

[0149] Designing the optical imaging lens according to the above relationships can determine the thickness of the structural part of the seventh lens E7, thereby determining the overall contour of the seventh lens E7, so that the thickness of the structural part of the seventh lens E7 is smaller to reduce the stray light generated by the structural part of the seventh lens E7.

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

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

[0152] The following further describes specific embodiments of the optical imaging lens applicable to the above embodiments with reference to the accompanying drawings.

[0153] As Figure 1A 、 Figure 1B and Figure 1C shown, 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] Both the first example and the second example of the first embodiment include 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. Among them, the object side and the image side of the first lens E1 are concave and convex respectively, the object side and the image side of the second lens E2 are convex and concave respectively, the object side and the image side of the third lens E3 are concave and concave respectively, and the object side and the image side 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. 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. 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 disposed 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. The third rear auxiliary spacer P3c is in direct contact with the image side surface of the third front auxiliary spacer P3b.

[0156] Both the first example and the second example of the first embodiment of the second optical assembly include 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 disposed 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 disposed in the second lens barrel along the optical path from the object side to the image side. Among them, 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. 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. 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. 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. The seventh auxiliary spacer P7b is in direct contact with the image side surface of the seventh spacer P7.

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

[0159] Table 1: Basic parameter table of the lenses of the optical imaging lens of the first embodiment

[0160]

[0161]

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

[0163]

[0164] Where x is the distance from the vertex of the aspherical surface when the aspherical surface is along the optical axis direction at a position with a height of h, i.e., the sagitta; c is the paraxial curvature of the aspherical surface, c = 1 / R (i.e., the paraxial curvature c is the reciprocal of the radius of curvature R in Table 1 above); k is the conic coefficient; Ai is the correction coefficient of the i-th order of the aspherical surface. Table 2 below gives the higher-order term coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for the aspherical surfaces S1 - S16 in the first embodiment.

[0165] Table 2: Aspherical coefficient table of the aspherical surfaces of the optical imaging lens of the first embodiment

[0166]

[0167]

[0168] Table 3 shows the dimensional data tables of the spacers of the optical imaging lenses of the first example and the second example of the first embodiment, where the unit of the dimensional data is millimeter (mm). Among them, 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 with two different sizes and spacing distances.

[0169] Table 3: Dimensional data table of the spacers 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 Shows the axial chromatic aberration curve of the optical imaging lens of the first embodiment, Figure 2B Shows the 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 Shows the lateral chromatic aberration curve of the first embodiment. According to Figures 2A to 2DIt can be seen that the optical imaging lens provided in the first embodiment has good imaging quality.

[0172] As Figure 3A and Figure 3B shown, 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 components of the first example and the second example of the second embodiment both include 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. Among them, the

[0174] 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.

[0175] 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. 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. 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. The third rear auxiliary spacer P3c is in direct contact with the image side surface of the third front auxiliary spacer P3b.

[0176] The second optical component 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 disposed 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 disposed in the second lens barrel along the optical path from the object side to the image side. Among them, 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. The object side surface and the image side surface of the eighth lens E8 are concave and concave, respectively.

[0177] 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.

[0178] The second optical component 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 disposed 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 disposed in the second lens barrel along the optical path from the object side to the image side. Among them, 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. The object side surface and the image side surface of the eighth lens E8 are concave and concave, respectively.

[0179] 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.

[0180] Table 4 shows the basic parameter table of the lenses of the optical imaging lens of the second embodiment, where the units of the radius of curvature and the thickness are both millimeters (mm).

[0181] Table 4: Basic Parameter Table of Lenses of the Optical Imaging Lens of the Second Embodiment

[0182]

[0183]

[0184] In the second embodiment, the object side surface and the image side surface of any one of the first lens E1 to the seventh lens E7 are aspherical surfaces, and the surface shape x of each aspherical lens can be defined by, but not limited to, the following aspherical formula:

[0185]

[0186] where x is the distance from the vertex of the aspherical surface to the aspherical surface at the position with a height of h along the optical axis direction; c is the paraxial curvature of the aspherical surface, c = 1 / R (that is, the paraxial curvature c is the reciprocal of the radius of curvature R in Table 4 above); k is the conic coefficient; Ai is the correction coefficient of the i-th order of the aspherical surface. Table 5 below gives the high-order term coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for the aspherical surfaces S1 - S16 of each aspherical lens in the second embodiment.

[0187] Table 5: Aspherical Coefficient Table of Aspherical Surfaces of the Optical Imaging Lens of the Second Embodiment

[0188]

[0189]

[0190] Table 6 shows the dimensional data tables of the spacers of the optical imaging lenses of the first example and the second example of the second embodiment, where the unit of the dimensional data is millimeter (mm). Among them, 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 with two different sizes and spacing distances.

[0191] Table 6: Dimensional Data Table of the Spacers of the Optical Imaging Lens of the Second Embodiment

[0192] 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

[0193] Figure 4A shows the axial chromatic aberration curve of the optical imaging lens of the second embodiment, Figure 4B shows the 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 shows the longitudinal chromatic aberration curve. According to Figures 4A to 4D it can be seen that the optical imaging lens given in the second embodiment has good imaging quality.

[0194] As Figure 5A and Figure 5B shown, the first example and the second example of the third embodiment of the present application are provided. In the third embodiment of the present application, the optical imaging lens may include a first optical component and a second optical component.

[0195] The first optical component 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, and a second spacer

[0196] 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. Among them, 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.

[0197] 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. 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. 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 disposed 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. The third rear auxiliary spacer P3c is in direct contact with the image side surface of the third front auxiliary spacer P3b.

[0198] The second optical component 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 disposed 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 disposed in the second lens barrel along the optical path from the object side to the image side. Among them, 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. The object side surface and the image side surface of the eighth lens E8 are concave and concave respectively.

[0199] The fifth spacer P5, the fifth front auxiliary spacer P5b, and the fifth rear auxiliary spacer P5c 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. The fifth front auxiliary spacer P5b is in direct contact with the image side surface of the fifth spacer P5. 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 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. 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. The seventh auxiliary spacer P7b is in direct contact with the image side surface of the seventh spacer P7.

[0200] The first optical component 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. Among them, 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.

[0201] 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.

[0202] The second optical component 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. Among them, 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.

[0203] 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.

[0204] Table 7 shows the basic parameter table of the lenses of the optical imaging lens of the third embodiment, where the units of the radius of curvature and the thickness are both millimeters (mm).

[0205] Table 7: Basic Parameter Table of the Lenses of the Optical Imaging Lens of the Third Embodiment

[0206] Face number Surface type Radius of curvature Thickness Material Conic coefficient OBJ Spherical surface Infinity Infinity STO Spherical surface Infinity 0.2326 S1 Aspherical surface -14.1995 1.3637 1.55，56.1 0.4223 S2 Aspherical surface -7.1335 0.0421 0.0143 S3 Aspherical surface 6.6839 0.9549 1.59，28.2 -0.0341 S4 Aspherical surface 6.2988 1.0526 -0.1182 S5 Aspherical surface -130.1623 0.6473 1.67，20.4 99.0000 S6 Aspherical surface 24.8479 0.9297 -3.9579 S7 Aspherical surface 10.8595 2.8000 1.55，56.1 -0.1883 S8 Aspherical surface -5.5175 0.5326 -0.0031 S9 Aspherical surface -2.8538 0.5313 1.61，28.3 -0.9967 S10 Aspherical surface -4.5335 0.9451 -0.0024 S11 Aspherical surface 10.6865 1.0913 1.68，19.2 -0.2355 S12 Aspherical surface 9.5325 0.6956 -1.2013 S13 Aspherical surface -34.5569 1.7555 1.55，56.1 0.0000 S14 Aspherical surface -5.7671 1.7897 -2.8807 S15 Aspherical surface -7.2782 0.6363 1.54，55.7 -1.2435 S16 Aspherical surface 9.8667 1.1100 0.0000 S17 Spherical surface Infinity 0.2100 1.52，64.2 S18 Spherical surface Infinity 0.7900 S19 Spherical surface Infinity

[0207] In the third embodiment, the object side surface and the image side surface of any one of the first lens E1 to the seventh lens E7 are aspherical surfaces. The surface profile x of each aspherical lens can be defined by, but not limited to, the following aspherical formula:

[0208]

[0209] Where x is the distance from the vertex of the aspherical surface to the aspherical surface when the aspherical surface is at a position with a height of h along the optical axis direction, the sag; c is the paraxial curvature of the aspherical surface, c = 1 / R (that is, the paraxial curvature c is the reciprocal of the radius of curvature R in Table 7 above); k is the conic coefficient; Ai is the correction coefficient of the i-th order of the aspherical surface. Table 8 below gives the higher-order term coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for the aspherical surfaces S1 - S16 in the third embodiment.

[0210] Table 8: Aspherical Coefficient Table of the Aspherical Surfaces of the Optical Imaging Lens of the Third Embodiment

[0211]

[0212]

[0213] Table 9 shows the dimensional data sheets of the spacers of the optical imaging lens for the first example and the second example of the third embodiment, where the unit of the dimensional data is millimeter (mm). Among them, 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 with two different sizes and spacing distances.

[0214] Table 9: Dimensional Data Sheet of the Spacers of the Optical Imaging Lens of the Third Embodiment

[0215]

[0216]

[0217] Figure 6A shows the axial chromatic aberration curve of the optical imaging lens of the third embodiment, Figure 6B shows the 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, Figure 6D shows the longitudinal chromatic aberration curve. According to Figures 6A to 6D it can be seen that the optical imaging lens given in the third embodiment has good imaging quality.

[0218] As Figure 7A and Figure 7B shown, the first example and the second example of the fourth embodiment of the present application are presented. In the fourth embodiment of the present application, the optical imaging lens may include a first optical component and a second optical component.

[0219] The first optical component 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. Among them, 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, 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. 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. 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 disposed 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. The third rear auxiliary spacer P3c is in direct contact with the image side surface of the third front auxiliary spacer P3b.

[0221] The first optical assembly of the second example of the fourth embodiment includes a first 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 disposed in the first barrel along the optical path from the object side to the image side. Among them, 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. The object side surface and the image side surface of the fourth lens E4 are convex and convex, respectively.

[0222] The first spacer P1 and the first front auxiliary spacer P1b 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. The second spacer P2 is disposed between the second lens E2 and the third lens E3. 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 disposed 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. The third rear auxiliary spacer P3c is in direct contact with the image side surface of the third front auxiliary spacer P3b.

[0223] The second optical assemblies of the first example and the second example of the fourth embodiment both include 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 disposed 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 disposed in the second lens barrel along the optical path from the object side to the image side. Among them, 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.

[0224] The fifth spacer P5, the fifth front auxiliary spacer P5b, and the fifth rear auxiliary spacer P5c 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. The fifth front auxiliary spacer P5b is in direct contact with the image side surface of the fifth spacer P5. 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 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. The seventh spacer P7 is 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.

[0225] Table 10 shows the basic parameter table of the lenses of the optical imaging lens of the fourth embodiment, where the units of the radius of curvature and the thickness are both millimeters (mm).

[0226] Table 10: Basic Parameter Table of the Lenses of the Optical Imaging Lens of the Fourth Embodiment

[0227] Face number Surface type Radius of curvature Thickness Material Conic coefficient OBJ Spherical surface Infinity Infinity STO Spherical surface Infinity 0.2231 S1 Aspherical surface -15.7751 0.7661 1.55，56.1 2.1999 S2 Aspherical surface -6.9227 0.0290 0.0562 S3 Aspherical surface 6.7480 1.0481 1.59，28.2 -0.1089 S4 Aspherical surface 6.2877 0.9802 -0.6090 S5 Aspherical surface -61.9178 0.5996 1.67，20.4 98.9665 S6 Aspherical surface 20.9733 0.8414 0.3654 S7 Aspherical surface 9.2983 2.8000 1.55，56.1 -0.6915 S8 Aspherical surface -5.3323 0.5247 -0.0245 S9 Aspherical surface -2.9012 0.4200 1.61，28.3 -1.0349 S10 Aspherical surface -4.5142 1.2952 -0.0231 S11 Aspherical surface 11.2854 1.1687 1.68，19.2 -1.3661 S12 Aspherical surface 21.2339 0.5596 -1.3620 S13 Aspherical surface -17.2303 0.9926 1.55，56.1 0.0000 S14 Aspherical surface -18.1538 1.7477 -1.7934 S15 Aspherical surface -7.4745 0.5306 1.54，55.7 -1.0944 S16 Aspherical surface 27.5270 0.8360 0.0000 S17 Spherical surface Infinity 0.2100 1.52，64.2 S18 Spherical surface Infinity 0.7900 S19 Spherical surface Infinity

[0228] In the fourth embodiment, the object side surface and the image side surface of any one of the first lens E1 to the seventh lens E7 are aspherical surfaces. The surface shape x of each aspherical lens can be defined by, but not limited to, the following aspherical formula:

[0229]

[0230] Where x is the distance from the vertex of the aspheric surface when the aspheric surface is at a position with a height of h along the optical axis; the sagitta: c is the paraxial curvature of the aspheric surface, c = 1 / R (i.e., the paraxial curvature c is the reciprocal of the radius of curvature R in Table 10 above); k is the conic constant; Ai is the correction coefficient of the i-th order of the aspheric surface. Table 11 below gives the higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for each of the aspheric mirrors S1 - S16 in the fourth embodiment.

[0231] Table 11: Aspheric Coefficient Table of the Aspheric Mirrors of the Optical Imaging Lens in the Fourth Embodiment

[0232]

[0233]

[0234] Table 12 shows the dimensional data tables of the spacers of the optical imaging lenses of the first example and the second example in the fourth embodiment, where the unit of the dimensional data is millimeter (mm). Among them, 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 with two different sizes and spacing distances.

[0235] Table 12: Dimensional Data Table of the Spacers of the Optical Imaging Lens in the Fourth Embodiment

[0236] 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

[0237] Figure 8A Shows the axial chromatic aberration curve of the optical imaging lens in the fourth embodiment, Figure 8B Shows the astigmatism curve of the optical imaging lens in the fourth embodiment. Figure 8C Shows the distortion curve of the optical imaging lens in the fourth embodiment, Figure 8D Shows the longitudinal chromatic aberration curve of the optical imaging lens in the fourth embodiment. According to Figures 8A to 8D It can be seen that the optical imaging lens given in the fourth embodiment has good imaging quality.

[0238] 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:

[0239]

[0240] The optical imaging lenses of the first embodiment, the second embodiment, the third embodiment, and the fourth embodiment satisfy the following relationship:

[0241] 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

[0242] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0243] The above embodiments only express several implementation manners of the present utility model, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. An optical imaging lens, characterized in that, Comprising: A first optical component, the first optical component includes a first lens barrel, a first lens, a second lens, a third lens and a fourth lens, and the first lens, the second lens, the third lens and the fourth lens are sequentially arranged in the first lens barrel along the optical path from the object side to the image side; And A second optical component, the second optical component includes a second lens barrel, a fifth lens, a sixth lens, a seventh lens, an eighth lens, the second lens barrel is 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 are sequentially arranged in the second lens barrel along the optical path from the object side to the image side; And At least one spacer, the spacer includes a fifth spacer, the fifth spacer is arranged between the fifth lens and the sixth lens and is 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; 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.

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 central 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 arranged between the first lens and the second lens, and the first spacer is 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 arranged between the first lens and the second lens, and the first spacer is 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 arranged between the first lens and the second lens and a second spacer arranged between the second lens and the third lens, the first spacer is in direct contact with the image side surface of the first lens, and the second spacer is in direct contact with 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 interval between the first lens and the second lens on the optical axis, and EP12 is the interval 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, and the first spacer is 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 central thickness of the first lens on the optical axis, and EP01 is the interval between the object side end face of the first lens barrel and the first spacer.

7. The optical imaging lens according to claim 1, characterized in that, 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; 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, and 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; 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, and the third spacer is 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 face of the first lens barrel closest to the imaging surface, and D20s is the outer diameter of the object side end face of the second lens barrel closest to the object side.

11. The optical imaging lens according to claim 1, characterized in that, 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: 1.30 < (T56 + CT6) / EP56 < 2.85; Wherein, T56 is the air interval between the fifth lens and the sixth lens on the optical axis, CT6 is the central thickness of the sixth lens on the optical axis, and EP56 is the interval between the fifth spacer and the sixth spacer.

12. The optical imaging lens according to claim 1, characterized in that, 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 relational expression: 0.35 < (R11 * D5m) / (R12 * D6s) < 1.05; wherein, 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 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; The optical imaging lens satisfies the relational expression: 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, characterized in that, 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; The optical imaging lens satisfies the relational expression: -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, characterized in that, The first lens has a positive optical power, the second lens has a positive optical power or a negative optical power, the third lens has a negative optical power, the fourth lens has a positive optical power, the fifth lens has a negative optical power, the sixth lens has a positive optical power or a negative optical power, the seventh lens has a positive optical power or a negative optical power, and the eighth lens has a positive optical power or a negative optical power.

16. The optical imaging lens according to claim 1, characterized in that, The object side surface and the image side surface of the first lens are concave and convex respectively, the object side surface and the image side surface of the second lens are convex and concave respectively, the object side surface and the image side surface of the third lens are concave and concave respectively, the object side surface and the image side surface of the fourth lens are convex and convex respectively, the object side surface and the image side surface of the fifth lens are concave and convex respectively, the object side surface and the image side surface of the sixth lens are convex and concave respectively, the object side surface and the image side surface of the seventh lens are concave and convex respectively, and the object side surface and the image side surface of the eighth lens are concave and concave 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 relational expression: 0.75 < (R13 / d6m) * (R14 / d7s) < 2.65; Wherein, R13 is the radius of curvature of the object side surface of the seventh lens, R14 is the radius of curvature 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 relational expressions: 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 central 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, characterized in that, 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 relational expressions: 1.15 < T78 / EP67 < 3.05; and 2.7 < T78 / CT8 < 3.3; Wherein, T78 is the air gap between the seventh lens and the eighth lens on the optical axis, CT8 is the central thickness of the eighth lens on the optical axis, and EP67 is the gap between the sixth spacer and the seventh spacer.

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