Optical imaging lens

Abstract

The invention discloses an optical imaging lens. The optical imaging lens comprises a lens barrel, a six-piece lens group and a spacer group, wherein the six-piece lens group and the spacer group are arranged in the lens barrel; the six-piece type lens group comprises a first lens with negative focal power, a second lens with positive focal power, a third lens with positive focal power, a fourth lens with negative focal power, a fifth lens with positive focal power and a sixth lens with negative focal power which are sequentially arranged from the object side to the image side along the optical axis; the spacer group includes a fifth spacer disposed on an image-side surface of the fifth lens and in contact with the image-side surface of the fifth lens. Wherein the maximum field angle FOV of the optical imaging lens is greater than or equal to 100 degrees and less than or equal to 150 degrees; the effective focal length f6 of the sixth lens and the outer diameter D5m of the image side surface of the fifth spacer satisfy the following conditions: 1.40 lt; f < 6 > / D < 5 mlt >; 2.30, 2.30; the outer diameter D0s of the object-side end face of the lens barrel, the outer diameter D0m of the image-side end face of the lens barrel, the curvature radius R11 of the object-side face of the sixth lens and the curvature radius R12 of the image-side face of the sixth lens satisfy 2.20 lt. (D0s-D0m) / (R11-R12) lt; 9.60).

Description

Technical Field

[0001] The present application relates to the field of optical devices, and in particular to a six-element optical imaging lens. Background Art

[0002] With the technological innovation of electronic devices, more new requirements are put forward for the imaging function of electronic devices. For example, the imaging lens of the electronic device is designed as a wide-angle lens to obtain a larger imaging range.

[0003] Currently, six-element imaging lenses have become mainstream. In order to achieve a large field of view of a six-element imaging lens, the first lens usually has a larger outer diameter, which causes the outer diameter of the first lens to be larger than that of other lenses. During assembly, the central axis of the first lens is prone to deviation from the central axis of other lenses, thereby affecting the imaging quality of the optical imaging lens. Summary of the invention

[0004] The present application provides an optical imaging lens that can at least solve or partially solve at least one problem or other problems existing in the prior art.

[0005] One aspect of the present application provides an optical imaging lens, which includes a lens barrel and a six-piece lens group and a spacer group placed in the lens barrel; the six-piece lens group includes a first lens with negative optical focal length, a second lens with positive optical focal length, a third lens with positive optical focal length, a fourth lens with negative optical focal length, a fifth lens with positive optical focal length, and a sixth lens with negative optical focal length, which are arranged in sequence from the object side to the image side along the optical axis; the image side surface of the first lens is a concave surface; the object side surface of the second lens is a concave surface, and the image side surface is a convex surface; the object side surface and the image side surface of the third lens are convex surfaces; the object side surface of the fourth lens is a convex surface, and the image side surface is a concave surface; the object side surface and the image side surface of the fifth lens are convex surfaces; the The object side surface is convex, and the image side surface is concave; the spacer group includes a fifth spacer disposed on the image side surface of the fifth lens and in contact with the image side surface of the fifth lens; wherein the maximum field of view FOV of the optical imaging lens satisfies: 100°≤FOV≤150°; the effective focal length f6 of the sixth lens and the outer diameter D5m of the image side surface of the fifth spacer satisfy: 1.40<|f6 / D5m|<2.30; and the outer diameter D0s of the object side end surface of the lens barrel, the outer diameter D0m of the image side end surface of the lens barrel, the curvature radius R11 of the object side surface of the sixth lens, and the curvature radius R12 of the image side surface of the sixth lens satisfy: 2.20<(D0s-D0m) / (R11-R12)<9.60.

[0006] According to an exemplary embodiment of the present application, the spacer group also includes a first spacer disposed on the image side surface of the first lens and in contact with the image side surface of the first lens, wherein the inner diameter d0s of the object side end surface of the lens barrel, the inner diameter d0m of the image side end surface of the lens barrel, and the total effective focal length f of the optical imaging lens satisfy: 2.00<(d0s-d0m) / f<5.00; the inner diameter d1s of the object side surface of the first spacer, the outer diameter D1s of the object side surface of the first spacer, and the effective focal length f1 of the first lens satisfy: -2.80<(D1s-d1s) / f1<-0.70.

[0007] According to an exemplary embodiment of the present application, the outer diameter D1s of the object side surface of the first spacer, the effective focal length f1 of the first lens, the outer diameter D5s of the object side surface of the fifth spacer and the effective focal length f5 of the fifth lens satisfy: 0<|D1s / f1|-|D5s / f5|<2.15.

[0008] According to an exemplary embodiment of the present application, the spacer group also includes a second spacer disposed on the image side surface of the second lens and in contact with the image side surface of the second lens, wherein an inner diameter d1s of the object side surface of the first spacer, an outer diameter D1s of the object side surface of the first spacer, an interval EP12 between the first spacer and the second spacer along the optical axis and a relative F number Fno of the optical imaging lens satisfy: 1.8<(D1s-d1s) / EP12×Fno<9.00.

[0009] According to an exemplary embodiment of the present application, the spacer group also includes a second spacer disposed on the image side surface of the second lens and in contact with the image side surface of the second lens, wherein the interval EP12 between the first spacer and the second spacer along the optical axis, the combined focal length f12 of the first lens and the second lens, the Abbe number V1 of the first lens and the Abbe number V2 of the second lens satisfy: -3.80<(V1-V2)×EP12 / f12<-2.30.

[0010] According to an exemplary embodiment of the present application, the spacer group further includes a second spacer disposed on the image side surface of the second lens and in contact with the image side surface of the second lens, wherein the interval EP01 between the object side end surface of the lens barrel and the first spacer along the optical axis and the interval EP12 between the first spacer and the second spacer along the optical axis satisfy: 1.00 <EP01 / EP12<2.20。

[0011] According to an exemplary embodiment of the present application, the spacer group further includes a second spacer disposed on the image side surface of the second lens and in contact with the image side surface of the second lens, wherein the inner diameter d1s of the object side surface of the first spacer, the outer diameter D2s of the object side surface of the second spacer, the air gap T12 between the first lens and the second lens on the optical axis, and the center thickness CT2 of the second lens on the optical axis satisfy: 3.10 <d1s / T12×(D2s / CT2)<5.8。

[0012] According to an exemplary embodiment of the present application, the spacer group further includes a second spacer disposed on the image side surface of the second lens and in contact with the image side surface of the second lens, wherein the inner diameter d1s of the object side surface of the first spacer, the outer diameter D2s of the object side surface of the second spacer, the center thickness CT1 of the first lens on the optical axis and the curvature radius R2 of the image side surface of the first lens satisfy: 0.15 <d1s×CT1 / (D2s×R2)<0.60。

[0013] According to an exemplary embodiment of the present application, the spacer group further includes a second spacer disposed on the image side surface of the second lens and in contact with the image side surface of the second lens, wherein the combined focal length f12 of the first lens and the second lens, the combined focal length f23 of the second lens and the third lens, the inner diameter d1s of the object side surface of the first spacer and the inner diameter f23 of the object side surface of the second spacer satisfy: -9.65 <f12 / d1s+f23 / d2s<-5.80。

[0014] According to an exemplary embodiment of the present application, the spacer group also includes a second spacer placed on the image side surface of the second lens and in contact with the image side surface of the second lens, and a third spacer placed on the image side surface of the third lens and in contact with the image side surface of the third lens, wherein the center thickness CT1 of the first lens on the optical axis, the air gap T12 between the first lens and the second lens on the optical axis, the center thickness CT2 of the second lens on the optical axis, and the gap EP23 between the second spacer and the third spacer along the optical axis satisfy: 6.00≤(CT1+T12+CT2) / EP23≤14.20.

[0015] According to an exemplary embodiment of the present application, the spacer group further includes a third spacer disposed on the image side surface of the third lens and in contact with the image side surface of the third lens, and a fourth spacer disposed on the image side surface of the fourth lens and in contact with the image side surface of the fourth lens, wherein an interval EP34 between the third spacer and the fourth spacer along the optical axis, a center thickness CT4 of the fourth lens on the optical axis, an inner diameter d4s of the object side surface of the fourth spacer, and an inner diameter d5s of the object side surface of the fifth spacer satisfy: 0.70 <EP34 / CT4×(d4s / d5s)<2.60。

[0016] According to an exemplary embodiment of the present application, the spacer group further includes a first spacer disposed on and in contact with the image side surface of the first lens and a second spacer disposed on and in contact with the image side surface of the second lens. The outer diameter D1m of the image side surface of the first spacer and the outer diameter D2m of the image side surface of the second spacer satisfy: 0.80 < D1m / D2m < 2.50; the length L of the lens barrel in the direction of the optical axis, the total effective focal length f of the optical imaging lens, the interval EP34 between the third spacer and the fourth spacer along the optical axis, and the interval EP45 between the fourth spacer and the fifth spacer along the optical axis satisfy: 5.80 < L / f + EP34 / EP45 < 7.90.

[0017] According to an exemplary embodiment of the present application, the outer diameter D0m of the image side end surface of the lens barrel and the outer diameter D5s of the object side end of the fifth spacer satisfy: 1.30 < D0m / D5s < 2.20.

[0018] In some embodiments of the present application, by controlling the optical imaging lens to satisfy "100° ≤ FOV ≤ 150°" and "1.40 < |f6 / D5m| < 2.30", while ensuring that the optical imaging lens has a large field of view angle and a large imaging range, the field curvature of the edge field of view can be effectively corrected. However, the larger the field of view angle of the optical imaging lens, the larger the outer diameter of the first lens, and there is a deviation between the central axis of the first lens and the central axes of other lenses during assembly, which will affect the imaging quality of the optical imaging lens. Therefore, by controlling the mutual relationship between the outer diameter of the object side end surface of the lens barrel, the outer diameter of the image side end surface of the lens barrel, and the curvature radii of the object side surface and the image side surface of the sixth lens, the outer diameters of the first lens and the sixth lens can be constrained within a reasonable range, effectively ensuring that each lens has appropriate assembly stability in the optical axis direction, avoiding the phenomenon of excessive deviation of the central axes of each lens caused by excessive assembly step difference. At the same time, the difference between the curvature radii of the object side surface and the image side surface of the sixth lens is small, and the change in the surface shape of the sixth lens during the assembly process is also smaller, which is beneficial to reducing the light exit angle. Therefore, compared with a lens with a large surface shape difference, the performance loss and assembly yield problems caused by its eccentricity are also smaller. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Other features, objects, and advantages of the present application will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which:

[0020] Figure 1A shows a schematic structural diagram of an optical imaging lens according to the present application;

[0021] Figure 1BThe table shows the eccentricity sensitivity of the first lens and the sixth lens when the optical imaging lens according to the present application satisfies (D0s-D0m) / (R11-R12)=9.01;

[0022] Figure 1C The table shows the eccentricity sensitivity of the first lens and the sixth lens when the optical imaging lens according to the present application satisfies (D0s-D0m) / (R11-R12)=11.00;

[0023] Figure 1D The table shows the eccentricity sensitivity of the first lens and the sixth lens when the optical imaging lens according to the present application satisfies (D0s-D0m) / (R11-R12)=1.85;

[0024] Figure 2 A schematic structural diagram of an optical imaging lens according to Embodiment 1 of the present application is shown;

[0025] Figure 3 A schematic structural diagram of an optical imaging lens according to Embodiment 2 of the present application is shown;

[0026] Figure 4 A schematic structural diagram of an optical imaging lens according to Embodiment 3 of the present application is shown;

[0027] FIG. 5A to FIG. 5C The axial chromatic aberration curve, the astigmatism curve and the magnification chromatic aberration curve of the optical imaging lens according to Embodiment 1, 2 or 3 of the present application are respectively shown;

[0028] Figure 6 A schematic structural diagram of an optical imaging lens according to Embodiment 4 of the present application is shown;

[0029] Figure 7 A schematic structural diagram of an optical imaging lens according to Embodiment 5 of the present application is shown;

[0030] Figure 8 A schematic structural diagram of an optical imaging lens according to Embodiment 6 of the present application is shown;

[0031] 9A to 9C The axial chromatic aberration curve, the astigmatism curve and the magnification chromatic aberration curve of the optical imaging lens according to Embodiment 4, 5 or 6 of the present application are respectively shown;

[0032] Fig.10 A schematic structural diagram of an optical imaging lens according to Embodiment 7 of the present application is shown;

[0033] Fig.11 A schematic structural diagram of an optical imaging lens according to Embodiment 8 of the present application is shown;

[0034] Fig.12A schematic structural diagram of an optical imaging lens according to Embodiment 9 of the present application is shown; and

[0035] FIG. 13A to FIG. 13C The axial chromatic aberration curve, the astigmatism curve and the magnification chromatic aberration curve of the optical imaging lens according to Embodiment 7, 8 or 9 of the present application are respectively shown. DETAILED DESCRIPTION

[0036] In order to better understand the present application, a more detailed description will be made of various aspects of the present application with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of exemplary embodiments of the present application, and do not limit the scope of the present application in any way. Throughout the specification, the same figure numerals refer to the same elements.

[0037] It should be noted that in this specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the features. Therefore, without departing from the teaching of the present application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0038] In the drawings, the thickness, size and shape of the lenses have been slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to the shapes of the spherical or aspherical surfaces shown in the drawings. The drawings are for illustration only and are not drawn strictly to scale.

[0039] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object is called the object side of the lens, and the surface of each lens closest to the imaging plane is called the image side of the lens.

[0040] It should also be understood that the terms "including" and / or "having", when used in this specification, indicate the presence of the stated features, elements and / or components, but do not exclude the presence or addition of one or more other features, elements, components and / or combinations thereof. In addition, when describing the embodiments of the present application, the term "may" is used to mean "one or more embodiments of the present application". And, the term "exemplary" is intended to refer to an example or illustration.

[0041] Unless otherwise defined, all terms (including technical terms and scientific terms) used in this article have the same meaning as those commonly understood by ordinary technicians in the field to which this application belongs. It should also be understood that terms (such as terms defined in commonly used dictionaries) should be interpreted as having the same meaning as their meaning in the context of the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined in this article.

[0042] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0043] Figure 1A Schematic diagram of the structure arrangement and some parameters of the optical imaging lens according to an exemplary embodiment of the present application. Figure 1A , d1s represents the inner diameter of the object side surface of the first spacer, D1s represents the outer diameter of the object side surface of the first spacer, D1m represents the outer diameter of the image side surface of the first spacer, d2s represents the inner diameter of the object side surface of the second spacer, D2s represents the outer diameter of the object side surface of the second spacer, D2m represents the outer diameter of the image side surface of the second spacer, d4s represents the inner diameter of the object side surface of the fourth spacer, d5s represents the inner diameter of the object side surface of the fifth spacer, D5s represents the outer diameter of the object side surface of the fifth spacer, D5m represents the outer diameter of the image side surface of the fifth spacer, and d0s represents the object side surface of the lens barrel. The inner diameter of the end face, d0m represents the inner diameter of the image side end face of the lens barrel, D0s represents the outer diameter of the object side end face of the lens barrel, D0m represents the outer diameter of the image side end face of the lens barrel, EP01 represents the interval between the object side end face of the lens barrel and the first spacer along the optical axis, EP12 represents the interval between the first spacer and the second spacer along the optical axis, EP23 represents the interval between the second spacer and the third spacer along the optical axis, EP34 represents the interval between the third spacer and the fourth spacer along the optical axis, EP45 represents the interval between the fourth spacer and the fifth spacer along the optical axis, and L represents the length of the lens barrel in the direction of the optical axis.

[0044] refer to Figures 2 to 4 , Figures 6 to 8 as well as Figures 10 to 12 In a first aspect of the present application, an optical imaging lens is provided. The optical imaging lens may include a six-piece lens group. The six-piece lens group may include a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens arranged in sequence from the object side to the image side along the optical axis. Among the first lens to the sixth lens, any two adjacent lenses may have an air gap between them.

[0045] In an exemplary embodiment, the first lens may have negative power, and its image side surface may be concave. The second lens may have positive power, its object side surface may be concave, and its image side surface may be convex. The third lens may have positive power, and its object side surface and image side surface may be convex. The fourth lens may have negative power, its object side surface may be convex, and its image side surface may be concave. The fifth lens may have positive power, and its object side surface and image side surface may be convex. The sixth lens may have negative power, its object side surface may be convex, and its image side surface may be concave.

[0046] In an exemplary embodiment, the optical imaging lens may further include a spacer group, and the spacer group may include one or more of a first spacer, a second spacer, a third spacer, a fourth spacer, and a fifth spacer. The first spacer may be placed on the image side of the first lens and at least partially in contact with the image side of the first lens. The second spacer may be placed on the image side of the second lens and at least partially in contact with the image side of the second lens. The third spacer may be placed on the image side of the third lens and at least partially in contact with the image side of the third lens. The fourth spacer may be placed on the image side of the fourth lens and at least partially in contact with the image side of the fourth lens. The fifth spacer may be placed on the image side of the fifth lens and at least partially in contact with the image side of the fifth lens. Reasonable use of spacers can effectively avoid the risk of stray light, reduce interference with image quality, and thereby improve the imaging quality of the optical imaging lens.

[0047] In an exemplary embodiment, the optical imaging lens may further include a lens barrel, and the six-piece lens group and the spacer group are placed in the lens barrel. The lens barrel may include an object side end face, an image side end face, an outer annular surface, and an inner annular surface, wherein the end face of the lens barrel closest to the object side is the object side end face of the lens barrel, and the end face of the lens barrel closest to the image side is the image side end face of the lens barrel; in a direction perpendicular to the optical axis, the surface of the lens barrel farthest from the optical axis is the outer annular surface, and the surface of the lens barrel closest to the optical axis is the inner annular surface. And the inner annular surface of the lens barrel is stepped.

[0048] In an exemplary embodiment, the maximum field of view FOV of the optical imaging lens may satisfy: 100°≤FOV≤150°; the effective focal length f6 of the sixth lens and the outer diameter D5m of the image side surface of the fifth spacer may satisfy: 1.40<|f6 / D5m|<2.30; and the outer diameter D0s of the object side end surface of the lens barrel, the outer diameter D0m of the image side end surface of the lens barrel, the curvature radius R11 of the object side surface of the sixth lens, and the curvature radius R12 of the image side surface of the sixth lens may satisfy: 2.20<(D0s-D0m) / (R11-R12)<9.60. By controlling the optical imaging lens to satisfy "100°≤FOV≤150°" and "1.40<|f6 / D5m|<2.30", the field curvature of the edge field of view can be effectively corrected while ensuring that the optical imaging lens has a large field of view angle and a large imaging range. However, the larger the field of view angle of the optical imaging lens, the larger the outer diameter of the first lens, and during assembly, there is a deviation between the central axis of the first lens and the central axes of other lenses, which will affect the imaging quality of the optical imaging lens. Therefore, by controlling the relationship between the outer diameter of the object side end face of the lens barrel, the outer diameter of the image side end face of the lens barrel, and the curvature radii of the object side face and the image side face of the sixth lens, the outer diameters of the first lens and the sixth lens can be constrained within a reasonable range, effectively ensuring that each lens has appropriate assembly stability in the optical axis direction, and avoiding the phenomenon of excessive deviation of the central axis of each lens due to excessive assembly step difference. At the same time, the difference in the curvature radii of the object side face and the image side face of the sixth lens is small, and the surface shape change of the sixth lens during the assembly process is also smaller, which is conducive to reducing the exit angle of light. Therefore, compared with lenses with large surface shape differences, the performance loss and assembly yield problems caused by their eccentricity are also smaller.

[0049] Combine the following Figures 1B to 1D , further illustrating the relationship between the lens eccentricity and sensitivity, Figures 1B to 1D In the figure, the symbols “+” and “-” of +1μm and -1μm represent the direction of movement of the field curvature of the MTF curve, and the “F” in “0.1F”, “0.2F”, “0.3F”, “0.4F”, “0.5F”, “0.6F”, “0.7F”, “0.8F”, “0.9F” and “1.0F” represents the field of view.

[0050] Figure 1BThe figure shows the sensitivity of the decentering values ​​of the first lens and the sixth lens to the field curvature in the T direction when (D0s-D0m) / (R11-R12)=9.01 of the optical imaging lens, that is, when the optical imaging lens satisfies 2.20<(D0s-D0m) / (R11-R12)<9.60. For example, under a field of view of 1.0, when the decentering value of the first lens deviates by +1μm from the design value, the offset of the field curvature in the T direction is -0.02μm, and when the decentering value of the first lens deviates by -1μm from the design value, the offset of the field curvature in the T direction is 0.05μm; when the decentering value of the sixth lens deviates by +1μm from the design value, the offset of the field curvature in the T direction is -7.16μm, and when the decentering value of the sixth lens deviates by -1μm from the design value, the offset of the field curvature in the T direction is 7.26μm.

[0051] Figure 1C The figure shows the sensitivity of the decentering values ​​of the first lens and the sixth lens to the field curvature in the T direction when (D0s-D0m) / (R11-R12)=11.00 of the optical imaging lens, that is, the optical imaging lens does not satisfy 2.20<(D0s-D0m) / (R11-R12)<9.60. For example, under a field of view of 1.0, when the decentering value of the first lens deviates by +1μm from the design value, the offset of the field curvature in the T direction is -1.27μm, and when the decentering value of the first lens deviates by -1μm from the design value, the offset of the field curvature in the T direction is 1.26μm; when the decentering value of the sixth lens deviates by +1μm from the design value, the offset of the field curvature in the T direction is -10.61μm, and when the decentering value of the sixth lens deviates by -1μm from the design value, the offset of the field curvature in the T direction is 11.79μm.

[0052] Figure 1D The figure shows the sensitivity of the decentering values ​​of the first lens and the sixth lens to the field curvature in the T direction when (D0s-D0m) / (R11-R12)=1.85 of the optical imaging lens, that is, the optical imaging lens does not satisfy 2.20<(D0s-D0m) / (R11-R12)<9.60. For example, under a field of view of 1.0, when the decentering value of the first lens deviates by +1μm from the design value, the offset of the field curvature in the T direction is -0.50μm, and when the decentering value of the first lens deviates by -1μm from the design value, the offset of the field curvature in the T direction is 0.44μm; when the decentering value of the sixth lens deviates by +1μm from the design value, the offset of the field curvature in the T direction is 8.04μm, and when the decentering value of the sixth lens deviates by -1μm from the design value, the offset of the field curvature in the T direction is -8.67μm.

[0053] from Figures 1B to 1DAccording to the data provided, compared with (D0s-D0m) / (R11-R12)=11.00 and (D0s-D0m) / (R11-R12)=1.85, when the optical imaging lens satisfies (D0s-D0m) / (R11-R12)=9.01, the sensitivity of the decentering values ​​of the first lens and the sixth lens to the field curvature in the T direction is significantly reduced. It can be seen that when the optical imaging lens satisfies "2.20<(D0s-D0m) / (R11-R12)<9.60", the sensitivity of the decentering values ​​of the first lens and the sixth lens to the field curvature in the T direction is low, which can improve the MTF yield of the optical imaging lens.

[0054] In an exemplary embodiment, the maximum field of view FOV of the optical imaging lens may satisfy: 100°≤FOV≤150°; the inner diameter d0s of the object side end surface of the lens barrel, the inner diameter d0m of the image side end surface of the lens barrel, and the total effective focal length f of the optical imaging lens may satisfy: 2.00<(d0s-d0m) / f<5.00; the inner diameter d1s of the object side surface of the first spacer, the outer diameter D1s of the object side surface of the first spacer, and the effective focal length f1 of the first lens may satisfy: -2.80<(D1s-d1s) / f1<-0.70. By controlling the optical imaging lens to satisfy "100°≤FOV≤150°" and "2.00<(d0s-d0m) / f<5.00", the length of the lens barrel in the direction of the optical axis can be reduced while ensuring that the optical imaging lens has a large field of view and a large shooting range. However, the larger the field of view of the optical imaging lens, the larger the head size of the optical imaging lens, which is not conducive to achieving a lightweight design of the optical imaging lens. Therefore, by controlling the relationship between the inner and outer diameters of the object side of the first spacer and the effective focal length of the first lens, the head size of the optical imaging lens can be reduced as much as possible while ensuring the performance of the optical imaging lens, which is conducive to achieving a lightweight design of the optical imaging lens.

[0055] In an exemplary embodiment, the outer diameter D1s of the object side surface of the first spacer, the effective focal length f1 of the first lens, the outer diameter D5s of the object side surface of the fifth spacer, and the effective focal length f5 of the fifth lens can satisfy: 0<|D1s / f1|-|D5s / f5|<2.15. By controlling the relationship between the outer diameter of the object side surface of the first spacer, the effective focal length of the first lens, the outer diameter of the object side surface of the fifth spacer, and the effective focal length of the fifth lens, the shapes of the first lens and the fifth lens can be constrained, which is beneficial to the processing and molding of the first lens and the fifth lens. At the same time, the outer diameters of the first lens and the fifth lens can be limited within a certain range, avoiding the phenomenon of excessive assembly step difference between the lenses due to excessive outer diameter difference, and improving the assembly stability and yield of the optical imaging lens.

[0056] In an exemplary embodiment, the inner diameter d1s of the object side surface of the first spacer, the outer diameter D1s of the object side surface of the first spacer, the spacing EP12 between the first spacer and the second spacer along the optical axis, and the relative F-number Fno of the optical imaging lens may satisfy: 1.8 < (D1s - d1s) / EP12 × Fno < 9.00. By controlling the relationship among the inner and outer diameters of the object side surface of the first spacer, the spacing between the first spacer and the second spacer along the optical axis, and the relative F-number of the optical imaging lens, the size of the optical imaging lens can be reduced while ensuring a reasonable relative F-number of the optical imaging lens, thereby leaving sufficient debugging and compensation space for the assembly of the module end and the chip while ensuring the high resolution of the imaging of the optical imaging lens.

[0057] In an exemplary embodiment, the spacing EP12 between the first spacer and the second spacer along the optical axis, the combined focal length f12 of the first lens and the second lens, the Abbe number V1 of the first lens, and the Abbe number V2 of the second lens may satisfy: -3.80 < (V1 - V2) × EP12 / f12 < -2.30. By controlling the relationship among the spacing between the first spacer and the second spacer along the optical axis, the combined focal length of the first lens and the second lens, the Abbe number of the first lens, and the Abbe number of the second lens, the difference in the Abbe numbers of the first lens and the second lens can be made relatively large, and the combined focal length of the first lens and the second lens is negative, which is beneficial to optimizing the chromatic aberration of the optical imaging lens, ensuring that the position of the rear focal plane remains consistent when the optical imaging lens operates in the visible and infrared bands, and at the same time taking into account that the spacing between the first spacer and the second spacer along the optical axis is restricted within a reasonable range, which helps to stabilize the assembly stability of the first lens and the second lens and the exit angle of the light.

[0058] In an exemplary embodiment, the spacing EP01 between the object side end face of the lens barrel and the first spacer along the optical axis and the spacing EP12 between the first spacer and the second spacer along the optical axis may satisfy: 1.00 < EP01 / EP12 < 2.20. By controlling the relationship between the spacing between the object side end face of the lens barrel and the first spacer along the optical axis and the spacing between the first spacer and the second spacer along the optical axis, the edge thicknesses of the first lens and the second lens can be respectively restricted within a reasonable range, avoiding the problem of the edge of the second lens being broken during the assembly process due to the too small edge thickness of the second lens, and avoiding the problem of affecting the molding and surface shape of the first lens due to the too large edge thickness of the first lens.

[0059] In an exemplary embodiment, the inner diameter d1s of the object side surface of the first spacer, the outer diameter D2s of the object side surface of the second spacer, the air gap T12 between the first lens and the second lens on the optical axis, and the central thickness CT2 of the second lens on the optical axis may satisfy: 3.10 < d1s / T12 × (D2s / CT2) < 5.8. By controlling the interrelationships among the inner diameter of the object side surface of the first spacer, the outer diameter of the object side surface of the second spacer, the air gap between the first lens and the second lens on the optical axis, and the central thickness of the second lens on the optical axis, the air gap between the first lens and the second lens on the optical axis and the central thickness of the second lens on the optical axis can be respectively constrained within reasonable ranges, improving the assembly stability of the second lens. At the same time, space can be saved, the size of the optical imaging lens can be reduced, which is conducive to realizing the thinning and lightening of the optical imaging lens and reducing costs.

[0060] In an exemplary embodiment, the inner diameter d1s of the object side surface of the first spacer, the outer diameter D2s of the object side surface of the second spacer, the central thickness CT1 of the first lens on the optical axis, and the radius of curvature R2 of the image side surface of the first lens may satisfy: 0.15 < d1s × CT1 / (D2s × R2) < 0.60. By controlling the interrelationships among the inner diameter of the object side surface of the first spacer, the outer diameter of the object side surface of the second spacer, the central thickness of the first lens on the optical axis, and the radius of curvature of the image side surface of the first lens, the central thickness of the first lens on the optical axis can be constrained, avoiding abnormal static aging performance of the optical imaging lens, which is conducive to adjusting the field curvature of the optical imaging lens; at the same time, the radius of curvature of the image side surface of the first lens can be constrained within a reasonable range, which is conducive to optimizing the specular reflection ghost image of the optical imaging lens and avoiding abnormal demolding during the molding of the first lens.

[0061] In an exemplary embodiment, the combined focal length f12 of the first lens and the second lens, the combined focal length f23 of the second lens and the third lens, the inner diameter d1s of the object side surface of the first spacer, and the inner diameter f23 of the object side surface of the second spacer may satisfy: -9.65 < f12 / d1s + f23 / d2s < -5.80. By controlling the interrelationships among the combined focal length of the first lens and the second lens, the combined focal length of the second lens and the third lens, the inner diameter of the object side surface of the first spacer, and the inner diameter of the object side surface of the second spacer, the shapes of the first lens, the second lens, and the third lens can be constrained, which is conducive to the processing and molding of the first lens, the second lens, and the third lens; at the same time, the inner diameters of the first spacer and the second spacer can be constrained within reasonable ranges, avoiding problems such as light blocking by the spacer and low relative illumination of the optical imaging lens caused by too small inner diameters, and avoiding problems such as the inability to limit the path of marginal rays of the lens and excessive stray light caused by too large inner diameters.

[0062] In an exemplary embodiment, the central thickness CT1 of the first lens on the optical axis, the air gap T12 between the first lens and the second lens on the optical axis, the central thickness CT2 of the second lens on the optical axis, and the interval EP23 between the second spacer and the third spacer along the optical axis may satisfy: 6.00 ≤ (CT1 + T12 + CT2) / EP23 ≤ 14.20. By controlling the interrelationship among the central thickness of the first lens on the optical axis, the air gap between the first lens and the second lens on the optical axis, the central thickness of the second lens on the optical axis, and the interval between the second spacer and the third spacer along the optical axis, it is beneficial to increase the chief ray angle (CRA) of the optical imaging lens, achieve a large image plane of the optical imaging lens, and at the same time, the biconvex structure can ensure that the first lens and the second lens will not be deformed during the assembly process, improving the assembly stability of the optical imaging lens.

[0063] In an exemplary embodiment, the interval EP34 between the third spacer and the fourth spacer along the optical axis, the central thickness CT4 of the fourth lens on the optical axis, the inner diameter d4s of the object side of the fourth spacer, and the inner diameter d5s of the object side of the fifth spacer may satisfy: 0.70 < EP34 / CT4 × (d4s / d5s) < 2.60. By controlling the interrelationship among the interval between the third spacer and the fourth spacer along the optical axis, the central thickness of the fourth lens on the optical axis, the inner diameter of the object side of the fourth spacer, and the inner diameter of the object side of the fifth spacer, the effective diameter portions of the third lens and the fourth lens can be made to fit together, avoiding stray light generated due to a large difference in the effective diameters of the third lens and the fourth lens, and at the same time, the specifications of the spacers can be ensured to be appropriate, which is beneficial to adjusting the field curvature of the optical imaging lens during assembly.

[0064] In an exemplary embodiment, the outer diameter D1m of the image side surface of the first spacer and the outer diameter D2m of the image side surface of the second spacer may satisfy: 0.80 < D1m / D2m < 2.50; the length L of the lens barrel in the direction of the optical axis, the total effective focal length f of the optical imaging lens, the interval EP34 between the third spacer and the fourth spacer along the optical axis, and the interval EP45 between the fourth spacer and the fifth spacer along the optical axis may satisfy: 5.80 < L / f + EP34 / EP45 < 7.90. By controlling the ratio of the outer diameter of the image side surface of the first spacer to the outer diameter of the image side surface of the second spacer within the range of 0.80 to 2.50, the outer diameter size of the optical imaging lens can be restricted to meet the module requirements; at the same time, by reasonably controlling the mutual relationship among the length of the lens barrel in the direction of the optical axis, the total effective focal length of the optical imaging lens, the interval between the third spacer and the fourth spacer along the optical axis, and the interval between the fourth spacer and the fifth spacer along the optical axis, the length of the lens barrel in the direction of the optical axis, the edge thickness of the fourth lens, and the edge thickness of the fifth lens can be restricted respectively, effectively reducing the size of the optical imaging lens, thereby realizing the miniaturization of the optical imaging lens.

[0065] In an exemplary embodiment, the outer diameter D0m of the image side end surface of the lens barrel and the outer diameter D5s of the object side end of the fifth spacer may satisfy: 1.30 < D0m / D5s < 2.20. By restricting the ratio of the outer diameter of the image side end surface of the lens barrel to the outer diameter of the object side end of the fifth spacer within the range of 1.30 to 2.20, the wall thickness of the lens barrel can be ensured to be within a reasonable range, avoiding problems such as poor roundness and coaxiality of the inner diameter of the lens barrel during the molding process and easy eccentricity during lens assembly, and improving the overall yield of the optical imaging lens.

[0066] In an exemplary embodiment, the effective focal length f6 of the sixth lens and the outer diameter D5m of the image side surface of the fifth spacer may satisfy: 1.40 < |f6 / D5m| < 2.30. By controlling the ratio of the effective focal length of the sixth lens to the outer diameter of the image side surface of the fifth spacer within the range of 1.40 to 2.30, the shape of the sixth lens can be restricted, and at the same time, the outer diameter of the sixth lens can be restricted by using the outer diameter of the image side surface of the fifth spacer, which is beneficial to the processing and molding of the sixth lens and ensures the surface shape of the sixth lens.

[0067] In an exemplary embodiment, the optical imaging lens may further include a diaphragm disposed between the second lens and the third lens.

[0068] The optical imaging lens according to the above embodiment of the present application may employ six lenses and at least one spacer. By reasonably allocating the parameters of each lens and each spacer, the miniaturization of the optical imaging lens can be achieved, the stray light phenomenon of the optical imaging lens can be improved, and the assembly stability and imaging quality of the optical imaging lens can be enhanced.

[0069] In an embodiment of the present application, at least one of the surfaces of each lens in the first lens to the sixth lens is an aspherical surface. The characteristic of an aspherical lens is that the curvature changes continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has a better curvature radius characteristic, and has the advantages of improving distortion aberration and improving astigmatism aberration. After adopting an aspherical lens, the aberration that occurs during imaging can be eliminated as much as possible, thereby improving the imaging quality. Optionally, the object side surface and the image side surface of each lens in the first lens to the sixth lens are both aspherical surfaces.

[0070] The second aspect of the present application provides an optical imaging lens, which includes a lens barrel and a six-piece lens group and a spacer group disposed in the lens barrel. The six-piece lens group may include a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens arranged in sequence from the object side to the image side along the optical axis. The spacer group may include a first spacer disposed on the image side of the first lens and in contact with the image side of the first lens.

[0071] The maximum field of view FOV of the optical imaging lens can satisfy: 100°≤FOV≤150°; the inner diameter d0s of the object side end surface of the lens barrel, the inner diameter d0m of the image side end surface of the lens barrel and the total effective focal length f of the optical imaging lens can satisfy: 2.00<(d0s-d0m) / f<5.00; the inner diameter d1s of the object side surface of the first spacer, the outer diameter D1s of the object side surface of the first spacer and the effective focal length f1 of the first lens can satisfy: -2.80<(D1s-d1s) / f1<-0.70. By controlling the optical imaging lens to satisfy "100°≤FOV≤150°" and "2.00<(d0s-d0m) / f<5.00", the length of the lens barrel in the direction of the optical axis can be reduced while ensuring that the optical imaging lens has a large field of view and a large shooting range. However, the larger the field of view of the optical imaging lens, the larger the head size of the optical imaging lens, which is not conducive to achieving a lightweight design of the optical imaging lens. Therefore, by controlling the relationship between the inner and outer diameters of the object side of the first spacer and the effective focal length of the first lens, the head size of the optical imaging lens can be reduced as much as possible while ensuring the performance of the optical imaging lens, which is conducive to achieving a lightweight design of the optical imaging lens.

[0072] Those skilled in the art should understand that, without departing from the technical solution claimed in the present application, the number of lenses and spacers constituting the optical imaging lens can be changed to obtain the various results and advantages described in this specification.

[0073] Specific embodiments of the optical imaging lens applicable to the above-mentioned embodiments are further described below with reference to the accompanying drawings.

[0074] Example 1

[0075] The following reference Figure 2 An optical imaging lens according to Embodiment 1 of the present application is described.

[0076] like Figure 2 As shown, the optical imaging lens 100 includes a lens barrel and a six-piece lens group and a spacer group placed in the lens barrel. The six-piece lens group includes: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5 and a sixth lens E6 in order from the object side to the image side along the optical axis. The aperture STO can be arranged between the second lens E2 and the third lens E3. The spacer group includes a first spacer P1, a second spacer P2, a third spacer P3, a fourth spacer P4 and a fifth spacer P5. The spacer group also includes a second auxiliary spacer P2b placed on the image side of the second spacer P2 and at least partially in contact with the image side of the second spacer P2. The spacer can block the excess light in the imaging process from entering the next lens, and at the same time make the lens and the lens barrel better supported, thereby enhancing the structural stability of the optical imaging lens.

[0077] The first lens E1 has negative focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has positive focal power, and its object side surface S3 is concave, and its image side surface S4 is convex. The third lens E3 has positive focal power, and its object side surface S5 is convex, and its image side surface S6 is convex. The fourth lens E4 has negative focal power, and its object side surface S7 is convex, and its image side surface S8 is concave. The fifth lens E5 has positive focal power, and its object side surface S9 is convex, and its image side surface S10 is convex. The sixth lens E6 has negative focal power, and its object side surface S11 is convex, and its image side surface S12 is concave. The light from the object passes through each surface S1 to S12 in sequence and is finally imaged on the imaging surface.

[0078] Table 1 shows the basic parameters of the optical imaging lens of Example 1, wherein the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm).

[0079]

[0080] Table 1

[0081] In this embodiment, the total effective focal length f of the optical imaging lens is 1.17 mm, the maximum field of view FOV of the optical imaging lens is 100.00°, the relative F number Fno of the optical imaging lens satisfies 1.79, the combined focal length f12 of the first lens and the second lens is -18.01 mm, and the combined focal length f23 of the second lens and the third lens is 1.41 mm.

[0082] In this embodiment, the object side surface and the image side surface of any lens among the first lens E1 to the sixth lens E6 are both aspherical surfaces, and the surface shape x of each aspherical lens can be defined by but not limited to the following aspherical surface formula:

[0083]

[0084] Wherein, x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at a height of h along the optical axis; c is the paraxial curvature of the aspheric surface, c=1 / R (i.e., the paraxial curvature c is the reciprocal of the curvature radius R in Table 1 above); k is the cone coefficient; Ai is the correction coefficient of the i-th order of the aspheric surface. Table 2 shows the high-order coefficients A that can be used for each aspheric surface S1-S12 in Example 1 4 , A 6 , A 8 , A 10 , A 12 , A 14 , A 16 , A 18 , A 20 , A 22 , A 24 , A 26 , A 28 and A 30 .

[0085] Face number A4 A6 A8 A10 A12 A14 A16 S1 5.9283E-01 -1.3976E-02 2.1514E-02 -8.6677E-03 4.1918E-04 8.8722E-04 6.6663E-04 S2 1.2047E-01 2.6217E-02 4.8826E-03 4.2225E-04 -1.6032E-03 -1.1695E-03 -7.8487E-04 S3 -1.4891E-01 1.3118E-02 1.3629E-04 -5.0117E-04 2.8933E-05 6.9371E-05 7.5639E-05 S4 -2.0746E-02 6.3451E-03 -6.9702E-04 1.4639E-04 -3.0032E-05 -3.4925E-05 -4.2857E-05 S5 -2.0391E-02 -7.7763E-05 -1.2399E-03 -1.7571E-04 -2.4738E-05 1.5803E-05 1.6053E-05 S6 -1.9041E-02 4.8761E-03 -3.2872E-03 9.4193E-04 -3.2347E-04 1.4268E-04 -2.2587E-05 S7 -5.7423E-02 7.0990E-03 -2.9966E-03 1.0649E-03 -3.0971E-04 8.6816E-05 -4.7673E-05 S8 -9.8468E-02 8.0315E-03 -2.7743E-03 6.2834E-04 -1.6466E-04 1.3022E-05 -2.5236E-05 S9 9.3535E-04 3.3546E-03 -1.8464E-03 4.9299E-04 2.7827E-04 1.1655E-05 -4.5030E-05 S10 -9.7958E-03 1.2685E-02 -1.9976E-03 1.1330E-03 5.8605E-04 3.8574E-04 7.0366E-05 S11 -4.4474E-01 4.2630E-02 -3.7884E-03 3.4849E-03 8.2894E-04 6.2930E-04 -1.7322E-04 S12 -5.6326E-01 9.8194E-02 -1.0865E-02 4.3374E-03 -1.0994E-03 4.0360E-04 -7.6427E-05 Face number A18 A20 A22 A24 A26 A28 A30 S1 1.4879E-04 -4.1494E-04 -3.6506E-04 -9.5609E-06 4.1764E-06 6.0756E-05 -7.7739E-06 S2 -5.4089E-04 -3.1439E-04 -1.8111E-04 -9.2533E-05 -3.9619E-05 -3.1586E-05 0.0000E+00 S3 1.5627E-05 -3.5272E-05 -7.1904E-05 -5.2624E-05 -2.2529E-05 0.0000E+00 0.0000E+00 S4 -3.0200E-05 -1.1828E-05 -3.4734E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 2.1038E-05 1.5471E-05 1.0317E-05 7.1091E-08 0.0000E+00 0.0000E+00 0.0000E+00 S6 3.7106E-05 8.7048E-06 1.0056E-05 3.8646E-06 0.0000E+00 0.0000E+00 0.0000E+00 S7 7.2449E-06 -1.2193E-05 -3.6617E-06 -3.1329E-06 0.0000E+00 0.0000E+00 0.0000E+00 S8 1.9022E-05 1.0604E-05 9.7460E-06 5.2152E-06 0.0000E+00 0.0000E+00 0.0000E+00 S9 -9.4868E-07 2.8308E-07 7.7361E-06 6.3172E-06 3.6325E-06 0.0000E+00 0.0000E+00 S10 -1.2093E-05 6.3114E-06 -9.8418E-06 -5.1235E-06 -2.3716E-05 -1.3406E-05 -1.1916E-05 S11 -1.8972E-04 -8.4855E-05 7.4022E-05 1.3609E-04 1.2494E-04 7.1661E-05 3.8068E-05 S12 2.1352E-05 2.4889E-07 -4.1217E-05 -1.2346E-05 -5.5715E-05 -1.0604E-05 -2.5939E-05

[0086] Table 2

[0087] Example 2

[0088] The following reference Figure 3 An optical imaging lens according to Embodiment 2 of the present application is described.

[0089] like Figure 3 As shown, the optical imaging lens 200 includes a lens barrel and a six-piece lens group and a spacer group placed in the lens barrel. The six-piece lens group includes: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5 and a sixth lens E6 in order from the object side to the image side along the optical axis. The aperture STO can be arranged between the second lens E2 and the third lens E3. The spacer group includes a first spacer P1, a second spacer P2, a third spacer P3, a fourth spacer P4 and a fifth spacer P5. The spacer can block the excess light in the imaging process from entering the next lens, and at the same time make the lens and the lens barrel better supported, thereby enhancing the structural stability of the optical imaging lens.

[0090] The structure of the effective diameter portion of the lens of this embodiment is the same as that of the effective diameter portion of the lens of Embodiment 1, that is, the basic parameter table of the optical imaging lens of this embodiment is the same as Table 1, and the aspheric coefficient table is the same as Table 2. The difference between this embodiment and Embodiment 1 is that the structure dimensions of the lens barrel, the first spacer P1, the second spacer P2, the third spacer P3, the fourth spacer P4 and the fifth spacer P5 are different. For example, the parameters such as d1s, D1s, D1m, d2s, D2s, D2m, d4s, d5s, D5s, D5m, d0s, d0m, D0s, D0m, EP01, EP12, EP23, EP34, EP45, L are different.

[0091] Example 3

[0092] The following reference Figure 4 An optical imaging lens according to Embodiment 3 of the present application is described.

[0093] like Figure 4 As shown, the optical imaging lens 300 includes a lens barrel and a six-piece lens group and a spacer group placed in the lens barrel. The six-piece lens group includes: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5 and a sixth lens E6 in order from the object side to the image side along the optical axis. The aperture STO can be arranged between the second lens E2 and the third lens E3. The spacer group includes a first spacer P1, a second spacer P2, a third spacer P3, a fourth spacer P4 and a fifth spacer P5. The spacer can block the excess light in the imaging process from entering the next lens, and at the same time make the lens and the lens barrel better supported, thereby enhancing the structural stability of the optical imaging lens.

[0094] The structure of the effective diameter portion of the lens of this embodiment is the same as that of the effective diameter portion of the lens of Embodiment 1, that is, the basic parameter table of the optical imaging lens of this embodiment is the same as Table 1, and the aspheric coefficient table is the same as Table 2. The difference between this embodiment and Embodiment 1 is that the structure dimensions of the lens barrel, the first spacer P1, the second spacer P2, the third spacer P3, the fourth spacer P4 and the fifth spacer P5 are different. For example, the parameters such as d1s, D1s, D1m, d2s, D2s, D2m, d4s, d5s, D5s, D5m, d0s, d0m, D0s, D0m, EP01, EP12, EP23, EP34, EP45, L are different.

[0095] Figure 5A The axial chromatic aberration curves of the optical imaging lenses of Examples 1, 2, and 3 are shown, which indicate the deviation of the focal point of light rays of different wavelengths after passing through the optical imaging lens. Figure 5BThe astigmatism curves of the optical imaging lenses of Examples 1, 2, and 3 are shown, which represent the meridional image curvature and sagittal image curvature corresponding to different image heights. Figure 5C The magnification chromatic aberration curves of the optical imaging lenses of Examples 1, 2, and 3 are shown, which represent the deviations of different image heights on the imaging surface after the light passes through the lens. FIG. 5A to FIG. 5C It can be seen that the optical imaging lenses provided in Examples 1, 2, and 3 can achieve good imaging quality.

[0096] Example 4

[0097] The following reference Figure 6 An optical imaging lens according to Embodiment 4 of the present application is described.

[0098] like Figure 6 As shown, the optical imaging lens 400 includes a lens barrel and a six-piece lens group and a spacer group placed in the lens barrel. The six-piece lens group includes: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5 and a sixth lens E6 in order from the object side to the image side along the optical axis. The aperture STO can be arranged between the second lens E2 and the third lens E3. The spacer group includes a first spacer P1, a second spacer P2, a third spacer P3, a fourth spacer P4 and a fifth spacer P5. The spacer can block the excess light in the imaging process from entering the next lens, and at the same time make the lens and the lens barrel better supported, thereby enhancing the structural stability of the optical imaging lens.

[0099] The first lens E1 has negative focal power, and its object side surface S1 is concave, and its image side surface S2 is concave. The second lens E2 has positive focal power, and its object side surface S3 is concave, and its image side surface S4 is convex. The third lens E3 has positive focal power, and its object side surface S5 is convex, and its image side surface S6 is convex. The fourth lens E4 has negative focal power, and its object side surface S7 is convex, and its image side surface S8 is concave. The fifth lens E5 has positive focal power, and its object side surface S9 is convex, and its image side surface S10 is convex. The sixth lens E6 has negative focal power, and its object side surface S11 is convex, and its image side surface S12 is concave. The light from the object passes through each surface S1 to S12 in sequence and is finally imaged on the imaging surface.

[0100] Table 3 shows the basic parameters of the optical imaging lens of Example 4, wherein the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm).

[0101]

[0102]

[0103] Table 3

[0104] In this embodiment, the total effective focal length f of the optical imaging lens is 1.17 mm, the maximum field of view FOV of the optical imaging lens is 140.00°, the relative F number Fno of the optical imaging lens satisfies 1.79, the combined focal length f12 of the first lens and the second lens is -18.10 mm, and the combined focal length f23 of the second lens and the third lens is 1.37 mm.

[0105] In this embodiment, the object side surface and the image side surface of any lens from the first lens E1 to the sixth lens E6 are both aspherical surfaces. Table 4 lists the high-order coefficients A of the aspherical surfaces S1-S12 that can be used in Embodiment 4. 4 , A 6 , A 8 , A 10 , A 12 , A 14 , A 16 , A 18 , A 20 , A 22 , A 24 , A 26 , A 28 and A 30 .

[0106] Face number A4 A6 A8 A10 A12 A14 A16 S1 6.1549E-01 -1.8637E-02 -5.6502E-03 9.2274E-03 -5.5139E-03 2.7412E-03 -9.9472E-04 S2 6.3656E-02 4.2730E-02 1.8802E-03 -2.4747E-04 -1.3379E-03 -1.2057E-03 -1.1065E-03 S3 -1.4394E-01 6.4761E-03 1.0338E-03 -3.5357E-04 1.8024E-04 -1.0043E-04 1.1091E-04 S4 -1.6639E-02 7.1115E-03 -6.2480E-04 1.7735E-04 -4.1907E-07 -1.0643E-05 2.1773E-05 S5 -2.2672E-02 3.3899E-04 -1.0914E-03 -8.6896E-05 -8.2970E-05 -8.8865E-06 -1.9163E-05 S6 -1.9748E-02 4.9157E-03 -3.0472E-03 1.0377E-03 -4.8395E-04 1.8586E-04 -7.1911E-05 S7 -5.6575E-02 7.2394E-03 -2.9637E-03 1.1452E-03 -4.3673E-04 1.5897E-04 -5.3436E-05 S8 -1.0110E-01 7.2329E-03 -2.8875E-03 9.4236E-04 -2.8881E-04 1.1636E-04 -3.7928E-05 S9 1.5677E-03 3.0377E-03 -1.3293E-03 6.2849E-04 1.0297E-04 5.3540E-05 -5.5576E-06 S10 -1.2291E-02 1.5216E-02 -5.6674E-04 1.3564E-03 4.7815E-04 3.6603E-04 1.8644E-04 S11 -4.6714E-01 4.5319E-02 -5.0131E-03 5.5404E-03 1.0136E-03 5.7611E-04 -1.4598E-05 S12 -5.9029E-01 8.8455E-02 -1.6601E-02 7.0299E-03 -1.1263E-03 5.7001E-04 -7.9214E-05 Face number A18 A20 A22 A24 A26 A28 A30 S1 3.0751E-04 -4.3158E-05 -7.8039E-05 8.4718E-05 -1.2963E-04 1.1266E-06 -9.4221E-05 S2 -6.1577E-04 -4.2455E-04 -1.3079E-04 -6.3225E-05 1.9153E-05 5.6587E-05 0.0000E+00 S3 -1.4707E-05 2.0494E-05 -8.9239E-06 1.0212E-06 -2.2684E-05 0.0000E+00 0.0000E+00 S4 -1.9305E-07 9.7491E-06 -7.5867E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 1.0977E-06 -6.0891E-06 7.7119E-06 5.8351E-07 0.0000E+00 0.0000E+00 0.0000E+00 S6 2.4965E-05 -4.6861E-06 -2.1500E-06 9.5839E-07 0.0000E+00 0.0000E+00 0.0000E+00 S7 1.4292E-05 7.3073E-08 -2.8596E-06 8.2192E-07 0.0000E+00 0.0000E+00 0.0000E+00 S8 5.9049E-06 2.0062E-06 -8.2161E-07 -2.5407E-09 0.0000E+00 0.0000E+00 0.0000E+00 S9 -1.3142E-05 2.6336E-06 -1.8782E-06 -1.3355E-07 1.9387E-07 0.0000E+00 0.0000E+00 S10 6.2266E-05 4.2745E-05 1.1451E-05 1.1098E-05 3.6874E-06 1.0426E-06 -2.0508E-06 S11 -8.7756E-05 -7.1943E-05 -2.8858E-05 -2.0619E-05 4.4897E-06 -1.0298E-05 1.3676E-05 S12 -7.0703E-06 5.7869E-05 -2.5529E-05 1.9622E-05 -1.7335E-05 1.6619E-05 -1.9162E-05

[0107] Table 4

[0108] Example 5

[0109] The following reference Figure 7 An optical imaging lens according to Embodiment 5 of the present application is described.

[0110] like Figure 7 As shown, the optical imaging lens 500 includes a lens barrel and a six-piece lens group and a spacer group placed in the lens barrel. The six-piece lens group includes: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5 and a sixth lens E6 in order from the object side to the image side along the optical axis. The aperture STO can be arranged between the second lens E2 and the third lens E3. The spacer group includes a first spacer P1, a second spacer P2, a third spacer P3, a fourth spacer P4 and a fifth spacer P5. The spacer group may also include a third auxiliary spacer P3b placed on the image side of the third spacer P3 and at least partially in contact with the image side of the third spacer P3. The spacer can block the excess light in the imaging process from entering the next lens, and at the same time make the lens and the lens barrel better supported, thereby enhancing the structural stability of the optical imaging lens.

[0111] The structure of the effective diameter portion of the lens of this embodiment is the same as that of the effective diameter portion of the lens of Embodiment 4, that is, the basic parameter table of the optical imaging lens of this embodiment is the same as Table 3, and the aspheric coefficient table is the same as Table 4. The difference between this embodiment and Embodiment 4 is that the structure dimensions of the lens barrel, the first spacer P1, the second spacer P2, the third spacer P3, the fourth spacer P4 and the fifth spacer P5 are different. For example, the parameters such as d1s, D1s, D1m, d2s, D2s, D2m, d4s, d5s, D5s, D5m, d0s, d0m, D0s, D0m, EP01, EP12, EP23, EP34, EP45, L are different.

[0112] Example 6

[0113] The following reference Figure 8 An optical imaging lens according to Example 6 of the present application is described.

[0114] like Figure 8 As shown, the optical imaging lens 600 includes a lens barrel and a six-piece lens group and a spacer group placed in the lens barrel. The six-piece lens group includes: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5 and a sixth lens E6 in order from the object side to the image side along the optical axis. The aperture STO can be arranged between the second lens E2 and the third lens E3. The spacer group includes a first spacer P1, a second spacer P2, a third spacer P3, a fourth spacer P4 and a fifth spacer P5. The spacer can block the excess light in the imaging process from entering the next lens, and at the same time make the lens and the lens barrel better supported, thereby enhancing the structural stability of the optical imaging lens.

[0115] The structure of the effective diameter portion of the lens of this embodiment is the same as that of the effective diameter portion of the lens of Embodiment 4, that is, the basic parameter table of the optical imaging lens of this embodiment is the same as Table 3, and the aspheric coefficient table is the same as Table 4. The difference between this embodiment and Embodiment 4 is that the structure dimensions of the lens barrel, the first spacer P1, the second spacer P2, the third spacer P3, the fourth spacer P4 and the fifth spacer P5 are different. For example, the parameters such as d1s, D1s, D1m, d2s, D2s, D2m, d4s, d5s, D5s, D5m, d0s, d0m, D0s, D0m, EP01, EP12, EP23, EP34, EP45, L are different.

[0116] Fig.9A The axial chromatic aberration curves of the optical imaging lenses of Examples 4, 5, and 6 are shown, which indicate the deviation of the focal point of light of different wavelengths after passing through the optical imaging lens. Fig. 9BThe astigmatism curves of the optical imaging lenses of Examples 4, 5, and 6 are shown, which represent the meridional image curvature and sagittal image curvature corresponding to different image heights. Fig. 9C The magnification chromatic aberration curves of the optical imaging lenses of Examples 4, 5, and 6 are shown, which represent the deviations of different image heights on the imaging surface after the light passes through the lens. 9A to 9C It can be seen that the optical imaging lenses provided in Examples 4, 5 and 6 can achieve good imaging quality.

[0117] Example 7

[0118] The following reference Fig.10 An optical imaging lens according to Embodiment 7 of the present application is described.

[0119] like Fig.10 As shown, the optical imaging lens 700 includes a lens barrel and a six-piece lens group and a spacer group placed in the lens barrel. The six-piece lens group includes: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5 and a sixth lens E6 in order from the object side to the image side along the optical axis. The aperture STO can be arranged between the second lens E2 and the third lens E3. The spacer group includes a first spacer P1, a second spacer P2, a third spacer P3, a fourth spacer P4 and a fifth spacer P5. The spacer can block the excess light in the imaging process from entering the next lens, and at the same time make the lens and the lens barrel better supported, thereby enhancing the structural stability of the optical imaging lens.

[0120] The first lens E1 has negative focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has positive focal power, and its object side surface S3 is concave, and its image side surface S4 is convex. The third lens E3 has positive focal power, and its object side surface S5 is convex, and its image side surface S6 is convex. The fourth lens E4 has negative focal power, and its object side surface S7 is convex, and its image side surface S8 is concave. The fifth lens E5 has positive focal power, and its object side surface S9 is convex, and its image side surface S10 is convex. The sixth lens E6 has negative focal power, and its object side surface S11 is convex, and its image side surface S12 is concave. The light from the object passes through each surface S1 to S12 in sequence and is finally imaged on the imaging surface.

[0121] Table 5 shows the basic parameters of the optical imaging lens of Example 7, wherein the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm).

[0122]

[0123]

[0124] Table 5

[0125] In this embodiment, the total effective focal length f of the optical imaging lens is 1.31 mm, the maximum field of view FOV of the optical imaging lens is 150.00°, the relative F number Fno of the optical imaging lens satisfies 1.90, the combined focal length f12 of the first lens and the second lens is -14.17 mm, and the combined focal length f23 of the second lens and the third lens is 1.41 mm.

[0126] In this embodiment, the object side surface and the image side surface of any lens from the first lens E1 to the sixth lens E6 are both aspherical surfaces. Table 6 shows the high-order coefficients A of the aspherical surfaces S1-S12 that can be used in Example 7. 4 , A 6 , A 8 , A 10 , A 12 , A 14 , A 16 , A 18 , A 20 , A 22 , A 24 , A 26 , A 28 and A 30 .

[0127] Face number A4 A6 A8 A10 A12 A14 A16 S1 5.5067E-01 -1.2541E-02 8.4908E-03 1.8934E-03 -1.1694E-03 1.6078E-03 -2.9517E-03 S2 1.2548E-01 3.6534E-02 1.4520E-03 8.4348E-04 8.1909E-04 -4.6391E-04 -8.7607E-04 S3 -1.4972E-01 7.9598E-03 3.7079E-04 1.7447E-04 1.0149E-04 -1.5179E-05 1.2250E-05 S4 -2.0783E-02 6.6385E-03 -8.6233E-04 2.3073E-04 -3.3624E-05 1.0810E-05 -4.8841E-06 S5 -2.0107E-02 5.0621E-05 -1.3113E-03 -1.0139E-04 -2.7819E-05 -5.1640E-06 -6.8458E-07 S6 -1.8946E-02 5.1236E-03 -3.1644E-03 1.1059E-03 -3.7772E-04 1.8249E-04 -3.6417E-05 S7 -5.7025E-02 7.3242E-03 -2.8844E-03 1.1905E-03 -3.6803E-04 1.3835E-04 -4.4566E-05 S8 -9.8241E-02 7.1743E-03 -2.8526E-03 6.9833E-04 -2.4589E-04 1.0361E-04 -3.8160E-06 S9 1.4459E-04 3.3808E-03 -1.6865E-03 5.6289E-04 9.5585E-05 2.5134E-05 -1.3699E-05 S10 -9.2309E-03 1.3238E-02 -9.6324E-04 1.1985E-03 3.5590E-04 2.1451E-04 4.7969E-05 S11 -4.4226E-01 4.2358E-02 -6.1777E-03 4.5758E-03 8.6932E-04 2.6918E-04 -1.4961E-04 S12 -5.9262E-01 8.9793E-02 -1.6334E-02 7.0634E-03 -7.0856E-04 5.2573E-04 -2.8846E-05 Face number A18 A20 A22 A24 A26 A28 A30 S1 1.3855E-03 -7.9445E-05 -4.7105E-04 1.0549E-04 1.3948E-04 -3.8988E-05 -9.9093E-05 S2 -6.2970E-04 -2.2985E-04 -5.9116E-05 9.1689E-06 -1.8443E-05 -5.3190E-06 0.0000E+00 S3 -1.7362E-05 7.5494E-06 -3.0219E-06 2.6353E-06 -4.3712E-07 0.0000E+00 0.0000E+00 S4 4.4837E-06 -3.8369E-07 -2.3054E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 -1.2146E-06 -2.2696E-06 -1.7242E-06 8.3864E-07 0.0000E+00 0.0000E+00 0.0000E+00 S6 1.7568E-05 -1.4517E-05 -3.2323E-06 -2.5610E-06 0.0000E+00 0.0000E+00 0.0000E+00 S7 -7.5974E-07 -2.1526E-05 -8.6072E-06 -5.2761E-06 0.0000E+00 0.0000E+00 0.0000E+00 S8 -3.5984E-06 -7.8246E-06 -6.9960E-07 9.3868E-07 0.0000E+00 0.0000E+00 0.0000E+00 S9 -1.8280E-05 -5.4996E-06 5.6012E-06 2.2743E-06 1.2705E-07 0.0000E+00 0.0000E+00 S10 1.7959E-05 1.3201E-05 6.0967E-06 9.4008E-06 3.9964E-06 5.1078E-06 -1.2925E-06 S11 -5.9612E-05 -1.9868E-05 2.8778E-05 2.5685E-05 2.2678E-05 1.2709E-05 1.8921E-05 S12 1.7362E-05 -1.9649E-05 -5.6084E-05 -3.3413E-05 -6.0906E-05 -1.7664E-05 -2.1563E-05

[0128] Table 6

[0129] Example 8

[0130] The following reference Fig.11 An optical imaging lens according to Example 8 of the present application is described.

[0131] like Fig.11 As shown, the optical imaging lens 800 includes a lens barrel and a six-piece lens group and a spacer group placed in the lens barrel. The six-piece lens group includes: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5 and a sixth lens E6 in order from the object side to the image side along the optical axis. The aperture STO can be arranged between the second lens E2 and the third lens E3. The spacer group includes a first spacer P1, a second spacer P2, a third spacer P3, a fourth spacer P4 and a fifth spacer P5. The spacer group may also include a third auxiliary spacer P3b placed on the image side of the third spacer P3 and at least partially in contact with the image side of the third spacer P3. The spacer can block the excess light in the imaging process from entering the next lens, and at the same time make the lens and the lens barrel better supported, thereby enhancing the structural stability of the optical imaging lens.

[0132] The structure of the effective diameter portion of the lens of this embodiment is the same as that of the effective diameter portion of the lens of Embodiment 7, that is, the basic parameter table of the optical imaging lens of this embodiment is the same as Table 5, and the aspheric coefficient table is the same as Table 6. The difference between this embodiment and Embodiment 7 is that the structure dimensions of the lens barrel, the first spacer P1, the second spacer P2, the third spacer P3, the fourth spacer P4 and the fifth spacer P5 are different. For example, the parameters such as d1s, D1s, D1m, d2s, D2s, D2m, d4s, d5s, D5s, D5m, d0s, d0m, D0s, D0m, EP01, EP12, EP23, EP34, EP45, L are different.

[0133] Example 9

[0134] The following reference Fig.12 An optical imaging lens according to Example 9 of the present application is described.

[0135] like Fig.12 As shown, the optical imaging lens 900 includes a lens barrel and a six-piece lens group and a spacer group placed in the lens barrel. The six-piece lens group includes: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5 and a sixth lens E6 in order from the object side to the image side along the optical axis. The aperture STO can be arranged between the second lens E2 and the third lens E3. The spacer group includes a first spacer P1, a second spacer P2, a third spacer P3, a fourth spacer P4 and a fifth spacer P5. The spacer group may also include a second auxiliary spacer P2b placed on the image side of the second spacer P2 and at least partially in contact with the image side of the second spacer P2. The spacer can block excess light from entering the next lens during the imaging process, and at the same time make the lens and the lens barrel better supported, thereby enhancing the structural stability of the optical imaging lens.

[0136] The structure of the effective diameter portion of the lens of this embodiment is the same as that of the effective diameter portion of the lens of Embodiment 7, that is, the basic parameter table of the optical imaging lens of this embodiment is the same as Table 5, and the aspheric coefficient table is the same as Table 6. The difference between this embodiment and Embodiment 7 is that the structure dimensions of the lens barrel, the first spacer P1, the second spacer P2, the third spacer P3, the fourth spacer P4 and the fifth spacer P5 are different. For example, the parameters such as d1s, D1s, D1m, d2s, D2s, D2m, d4s, d5s, D5s, D5m, d0s, d0m, D0s, D0m, EP01, EP12, EP23, EP34, EP45, L are different.

[0137] Fig.13A The axial chromatic aberration curves of the optical imaging lenses of Examples 7, 8, and 9 are shown, which indicate the deviation of the focal point of light of different wavelengths after passing through the optical imaging lens. Fig. 13B The astigmatism curves of the optical imaging lenses of Examples 7, 8, and 9 are shown, which represent the meridional image curvature and sagittal image curvature corresponding to different image heights. Fig. 13C The magnification chromatic aberration curves of the optical imaging lenses of Examples 7, 8, and 9 are shown, which represent the deviations of different image heights on the imaging surface after the light passes through the lens. FIG. 13A to FIG. 13C It can be seen that the optical imaging lenses provided in Examples 7, 8 and 9 can achieve good imaging quality.

[0138] Table 7 shows the values ​​of parameters such as d1s, D1s, D1m, d2s, D2s, D2m, d4s, d5s, D5s, D5m, d0s, d0m, D0s, D0m, EP01, EP12, EP23, EP34, EP45 and L of each embodiment in Examples 1 to 9. The above parameters can be measured according to the marking method shown in Figure 1, and the units of the parameters listed in Table 7 are all mm.

[0139]

[0140]

[0141] Table 7

[0142] Table 8 shows the values ​​of the conditional expressions of each of Examples 1 to 9.

[0143] Conditional / Example 1 2 3 4 5 6 7 8 9 |f6 / D5m| 2.16 2.10 2.25 1.41 1.58 1.47 1.56 1.83 1.54 (D0s-D0m) / (R11-R12) 9.01 6.76 9.52 4.74 4.52 3.86 4.08 2.28 2.85 (d0s-d0m) / f 4.89 3.81 4.89 4.58 4.16 3.72 3.20 2.20 2.43 (D1s-d1s) / f1 -2.53 -2.22 -1.41 -2.51 -2.71 -0.85 -2.44 -2.04 -0.71 |D1s / f1|-|D5s / f5| 1.72 1.58 0.72 1.74 2.13 0.15 1.77 1.56 0.02 (D1s-d1s) / EP12×Fno 8.92 6.55 4.96 5.41 7.01 1.84 8.97 7.43 2.62 (V1-V2)×EP12 / f12 -2.36 -2.82 -2.36 -3.78 -3.14 -3.77 -3.00 -3.03 -3.00 EP01 / EP12 2.16 1.51 2.15 1.09 1.18 1.10 1.20 1.29 1.20 d1s / T12×(D2s / CT2) 3.12 4.56 4.16 5.03 3.78 3.57 4.44 3.75 5.75 d1s×CT1 / (D2s×R2) 0.56 0.58 0.49 0.32 0.44 0.46 0.24 0.29 0.19 f12 / d1s+f23 / d2s -9.57 -7.43 -8.82 -6.92 -7.09 -6.92 -6.01 -5.93 -6.01 (CT1+T12+CT2) / EP23 7.60 14.14 7.67 10.53 13.97 10.68 6.00 10.84 6.06 EP34 / CT4×(d4s / d5s) 1.34 0.76 1.33 2.53 2.56 2.52 1.83 1.98 1.81 D1m / D2m 2.44 1.99 1.31 1.75 2.48 1.30 2.44 2.35 0.90 L / f+EP34 / EP45 7.07 7.05 7.07 7.43 7.80 7.43 5.98 6.70 5.98 D0m / D5s 1.38 1.57 1.44 1.43 1.67 1.81 1.60 2.14 2.01

[0144] Table 8

[0145] The present application also provides an imaging device, whose electronic photosensitive element may be a photosensitive coupled device (CCD) or a complementary metal oxide semiconductor element (CMOS). The imaging device may be an independent imaging device such as a digital camera, or an image acquisition module integrated in a mobile electronic device such as a mobile phone, VR, etc. The imaging device is equipped with the optical imaging lens described above.

[0146] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with the technical features with similar functions disclosed in this application (but not limited to) by each other.

Claims

1. Optical imaging lens, It is characterized in that include: A six-piece lens group, comprising a first lens with negative optical power, a second lens with positive optical power, a third lens with positive optical power, a fourth lens with negative optical power, a fifth lens with positive optical power and a sixth lens with negative optical power, which are arranged in sequence from the object side to the image side along the optical axis; the image side surface of the first lens is a concave surface; the object side surface of the second lens is a concave surface, and the image side surface is a convex surface; the object side surface and the image side surface of the third lens are convex surfaces; the object side surface of the fourth lens is a convex surface, and the image side surface is a concave surface; the object side surface and the image side surface of the fifth lens are convex surfaces; the object side surface of the sixth lens is a convex surface, and the image side surface is a concave surface; a spacer group, comprising a fifth spacer disposed on the image side surface of the fifth lens and in contact with the image side surface of the fifth lens; a lens barrel, wherein the six-piece lens group and the spacer group are disposed in the lens barrel; Wherein, the maximum field of view FOV of the optical imaging lens satisfies: 100°≤FOV≤150°; The effective focal length f6 of the sixth lens and the outer diameter D5m of the image side surface of the fifth spacer satisfy the following: 1.40<|f6 / D5m|<2.30; and The outer diameter D0s of the object side end surface of the lens barrel, the outer diameter D0m of the image side end surface of the lens barrel, the curvature radius R11 of the object side surface of the sixth lens and the curvature radius R12 of the image side surface of the sixth lens satisfy: 2.20<(D0s-D0m) / (R11-R12)<9.

60.

2. The optical imaging lens according to claim 1, It is characterized in that The spacer set further includes a first spacer disposed on the image side surface of the first lens and in contact with the image side surface of the first lens. Among them, the inner diameter d0s of the object side end surface of the lens barrel, the inner diameter d0m of the image side end surface of the lens barrel and the total effective focal length f of the optical imaging lens satisfy: 2.00<(d0s-d0m) / f<5.00; the inner diameter d1s of the object side surface of the first spacer, the outer diameter D1s of the object side surface of the first spacer and the effective focal length f1 of the first lens satisfy: -2.80<(D1s-d1s) / f1<-0.

70.

3. The optical imaging lens according to claim 2, It is characterized in that An outer diameter D1s of the object side surface of the first spacer, an effective focal length f1 of the first lens, an outer diameter D5s of the object side surface of the fifth spacer and an effective focal length f5 of the fifth lens satisfy: 0<|D1s / f1|-|D5s / f5|<2.

15.

4. The optical imaging lens according to claim 2, It is characterized in that The spacer set further includes a second spacer disposed on the image side surface of the second lens and in contact with the image side surface of the second lens. Among them, the inner diameter d1s of the object side surface of the first spacer, the outer diameter D1s of the object side surface of the first spacer, the interval EP12 between the first spacer and the second spacer along the optical axis and the relative F number Fno of the optical imaging lens satisfy: 1.8<(D1s-d1s) / EP12×Fno<9.

00.

5. The optical imaging lens according to claim 2, It is characterized in that The spacer set further includes a second spacer disposed on the image side surface of the second lens and in contact with the image side surface of the second lens. Among them, the interval EP12 between the first spacer and the second spacer along the optical axis, the combined focal length f12 of the first lens and the second lens, the Abbe number V1 of the first lens and the Abbe number V2 of the second lens satisfy: -3.80<(V1-V2)×EP12 / f12<-2.

30.

6. The optical imaging lens according to claim 2, It is characterized in that The spacer set further includes a second spacer disposed on the image side surface of the second lens and in contact with the image side surface of the second lens. The inner diameter d1s of the object side surface of the first spacer, the outer diameter D2s of the object side surface of the second spacer, the center thickness CT1 of the first lens on the optical axis and the curvature radius R2 of the image side surface of the first lens satisfy: 0.15 <d1s×CT1 / (D2s×R2)<0.60。 7. The optical imaging lens according to claim 2, It is characterized in that The spacer set further includes a second spacer disposed on the image side surface of the second lens and in contact with the image side surface of the second lens. The combined focal length f12 of the first lens and the second lens, the combined focal length f23 of the second lens and the third lens, the inner diameter d1s of the object side surface of the first spacer, and the inner diameter f23 of the object side surface of the second spacer satisfy: -9.65 <f12 / d1s+f23 / d2s<-5.80。 8. The optical imaging lens according to claim 1, It is characterized in that The spacer group further includes a third spacer disposed on the image side surface of the third lens and in contact with the image side surface of the third lens, and a fourth spacer disposed on the image side surface of the fourth lens and in contact with the image side surface of the fourth lens. The interval EP34 between the third spacer and the fourth spacer along the optical axis, the center thickness CT4 of the fourth lens on the optical axis, the inner diameter d4s of the object side of the fourth spacer and the inner diameter d5s of the object side of the fifth spacer satisfy: 0.70 <EP34 / CT4×(d4s / d5s)<2.60。 9. The optical imaging lens according to claim 8, It is characterized in that The spacer set further includes a first spacer disposed on the image side surface of the first lens and in contact with the image side surface of the first lens, and a second spacer disposed on the image side surface of the second lens and in contact with the image side surface of the second lens. Among them, the outer diameter D1m of the image side surface of the first spacer and the outer diameter D2m of the image side surface of the second spacer satisfy: 0.80 < D1m / D2m < 2.50; the length L of the lens barrel in the direction of the optical axis, the total effective focal length f of the optical imaging lens, the interval EP34 between the third spacer and the fourth spacer along the optical axis, and the interval EP45 between the fourth spacer and the fifth spacer along the optical axis satisfy: 5.80 < L / f + EP34 / EP45 < 7.

90.

10. The optical imaging lens according to any one of claims 1-9, characterized in that the outer diameter D0m of the image side end surface of the lens barrel and the outer diameter D5s of the object side end of the fifth spacer satisfy: 1.30 < D0m / D5s < 2.20.

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