An optical imaging lens

Abstract

The present invention discloses an optical imaging lens, which sequentially includes, from the object side to the image side along the optical axis: a first lens with positive optical power; a second lens with negative optical power; a third lens; a fourth lens with positive optical power; a fifth lens with negative optical power, the object side surface of which is concave; wherein, the effective focal length f of the optical imaging lens, the entrance pupil diameter EPD of the optical imaging lens, the on-axis distance TTL from the object side surface of the first lens to the imaging surface, and half of the diagonal length ImgH of the effective pixel area on the imaging surface satisfy: f / EPD < 1.9 and TTL / ImgH ≤ 1.25. The present invention provides an optical imaging system with a large imaging surface and a large aperture by controlling the relevant parameters of each lens.

Description

Technical Field

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

[0002] In recent years, the ultra-thinning of mobile phones has been a market trend, and the module technology has been continuously upgraded. Among them, the requirements for the imaging quality of mobile phone lenses have become increasingly high. In this situation, the number of lenses in mobile phone lenses is increasing, and the price is also rising. For some manufacturers, they not only want to follow the mainstream trend to make large image height, large aperture, and ultra-thin mobile phone lenses, but also pursue higher cost performance. The present invention provides an optical imaging lens with a large imaging image plane and a large aperture.

[0003] It is a 5-piece ultra-thin large-aperture rear lens with a large imaging image plane, having ultra-high cost performance, capable of providing a large aperture, so that it still has good imaging quality even in a dim environment, becoming a substitute for 6-piece and 7-piece lenses. At the same time, due to its unique lens model, it can provide sufficient space for subsequent related adjustments extremely well, which also makes the related structures and assembly processes more flexible. Summary of the Invention

[0004] Based on this, it is necessary to provide an optical imaging lens with five lenses, which is a 5-piece ultra-thin large-aperture rear lens with a large imaging image plane, having ultra-high cost performance, capable of providing a large aperture, so that it still has good imaging quality even in a dim environment, becoming a substitute for 6-piece and 7-piece lenses.

[0005] The present invention protects an optical imaging lens, which sequentially includes, from the object side to the image side along the optical axis: a first lens with a positive optical power; a second lens with a negative optical power; a third lens with an optical power; a fourth lens with a positive optical power; a fifth lens with a negative optical power, the object side surface of which is concave; wherein, the effective focal length f of the optical imaging lens, the entrance pupil diameter EPD of the optical imaging lens, the on-axis distance TTL from the object side surface of the first lens to the imaging surface, and half of the diagonal length ImgH of the effective pixel area on the imaging surface can satisfy: f / EPD < 1.9 and TTL / ImgH ≤ 1.25.

[0006] In some embodiments, the effective focal length f1 of the first lens, the effective focal length f4 of the fourth lens, and the effective focal length of the optical imaging lens can satisfy: 1.7 < (f1 + f4) / f < 2.2.

[0007] In some embodiments, the effective focal length f2 of the second lens and the effective focal length f5 of the fifth lens can satisfy: 2.4 < f2 / f5 < 4.2.

[0008] In some embodiments, the curvature radius R3 of the object side surface of the second lens and the curvature radius R4 of the image side surface of the second lens may satisfy: 2.0 < (R3 + R4) / (R3 - R4) < 2.6.

[0009] In some embodiments, the curvature radius R2 of the image side surface of the first lens and the curvature radius R1 of the object side surface of the first lens may satisfy: 0.6 < (R2 - R1) / (R2 + R1) < 0.9.

[0010] In some embodiments, the central thickness CT1 of the first lens on the optical axis, the central thickness CT2 of the second lens on the optical axis, and the central thickness CT3 of the third lens on the optical axis may satisfy: 0.5 < CT1 / (CT2 + CT3) < 0.9.

[0011] In some embodiments, the air gap T34 between the third lens and the fourth lens on the optical axis, the air gap T12 between the first lens and the second lens on the optical axis, and the air gap T23 between the second lens and the third lens on the optical axis may satisfy: 1.5 < T34 / (T12 + T23) < 2.1.

[0012] In some embodiments, the effective focal length f of the optical imaging lens and the maximum field of view FOV of the optical imaging lens may satisfy: 3.1 mm < f × tan(1 / 2 FOV) < 3.7 mm.

[0013] In some embodiments, the combined focal length f12 of the first lens and the second lens and the effective focal length f of the optical imaging lens may satisfy: 1.2 < f12 / f < 1.7.

[0014] In some embodiments, the edge thickness ET5 of the fifth lens and the central thickness CT5 of the fifth lens on the optical axis may satisfy: 1.4 < ET5 / CT5 < 2.3.

[0015] In some embodiments, the central thickness CT4 of the fourth lens on the optical axis and the edge thickness ET4 of the fourth lens may satisfy: 1.2 < CT4 / ET4 < 1.8.

[0016] In some embodiments, the axial distance SAG52 between the intersection of the image side surface of the fifth lens and the optical axis and the vertex of the effective radius of the image side surface of the fifth lens and the axial distance SAG51 between the intersection of the object side surface of the fifth lens and the optical axis and the vertex of the effective radius of the object side surface of the fifth lens may satisfy: 0.2 < SAG52 / SAG51 < 0.7.

[0017] In some embodiments, the following condition is satisfied between the effective semi-aperture DT32 of the image side surface of the third lens and the effective semi-aperture DT22 of the image side surface of the second lens: 1.2 < DT32 / DT22 < 1.5.

[0018] An optical imaging lens, the following conditions are satisfied between the effective focal length f2 of the second lens and the effective focal length f5 of the fifth lens: 2.4 < f2 / f5 < 4.2; and the following condition is satisfied between the air gap T34 on the optical axis between the third lens and the fourth lens, the air gap T12 on the optical axis between the first lens and the second lens, and the air gap T23 on the optical axis between the second lens and the third lens: 1.5 < T34 / (T12 + T23) < 2.1.

[0019] This application uses five lenses. By reasonably distributing the optical power, surface shape, central thickness of each lens, and the axial spacing between each lens, and by controlling at least parameters such as the optical total length of the optical imaging lens, the above optical imaging lens has at least one beneficial effect such as a large aperture, a large image plane, a large field of view angle, and ultra-thin. This optical imaging lens is suitable for use as a rear camera of a portable electronic device such as a mobile phone. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0021] Figure 1 Shown is a schematic structural diagram of the optical imaging lens according to the first embodiment of the present invention;

[0022] Figures 2 - 5 Shown are the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens according to the first embodiment of the present invention;

[0023] Figure 6 Shown is a schematic structural diagram of the optical imaging lens according to the second embodiment of the present invention;

[0024] Figures 7 - 10 Shown are the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens according to the second embodiment of the present invention;

[0025] Figure 11 Shown is a schematic structural diagram of the optical imaging lens according to the third embodiment of the present invention;

[0026] Figures 12 - 15Shown are the axial chromatic aberration curve, astigmatism curve, distortion curve, and longitudinal chromatic aberration curve of the optical imaging lens according to the third embodiment of the present invention;

[0027] Figure 16 Shown is a schematic structural diagram of the optical imaging lens according to the fourth embodiment of the present invention;

[0028] Figures 17 - 20 Shown are the axial chromatic aberration curve, astigmatism curve, distortion curve, and longitudinal chromatic aberration curve of the optical imaging lens according to the fourth embodiment of the present invention;

[0029] Figure 21 Shown is a schematic structural diagram of the optical imaging lens according to the fifth embodiment of the present invention;

[0030] Figures 22 - 25 Shown are the axial chromatic aberration curve, astigmatism curve, distortion curve, and longitudinal chromatic aberration curve of the optical imaging lens according to the fifth embodiment of the present invention.

[0031] The realization of the object, functional features, and advantages of the present invention will be further described with reference to the embodiments and the accompanying drawings. Detailed Embodiments

[0032] To better understand the present application, more detailed descriptions of various aspects of the present application will be made 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 reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

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

[0034] In the drawings, for ease of illustration, the thickness, size, and shape of the lens have been slightly exaggerated. 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 spherical or aspherical shapes shown in the drawings. The drawings are only for illustration and are not drawn to an exact scale.

[0035] In this text, 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 to be photographed is called the object side surface of the lens, and the surface of each lens closest to the imaging surface is called the image side surface of the lens.

[0036] It should also be understood that the terms "comprising", "including", "having", "containing" and / or "including having", when used in this specification, mean 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 an expression such as "at least one of..." appears after a list of listed features, it modifies the entire list of listed features, rather than an individual element in the list. In addition, when describing embodiments of the present application, the use of "may" means "one or more embodiments of the present application". And the term "exemplary" is intended to refer to an example or illustration.

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

[0038] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0039] The features, principles and other aspects of the present application will be described in detail below.

[0040] The optical imaging lens according to an exemplary embodiment of the present application may include, for example, five lenses having optical power, namely, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. These five lenses are arranged in sequence along the optical axis from the object side to the image side.

[0041] In an exemplary embodiment, the first lens has a positive optical power; the second lens has a negative optical power; the third lens may have a positive or negative optical power; the fourth lens has a positive optical power; the fifth lens has a negative optical power, and its object side is concave. The positive optical power of the first lens and the negative optical power of the second lens help to have a better light converging effect while reducing the FNO of the camera lens group; the fourth lens with a positive optical power and the fifth lens with a negative optical power and a concave object side can reasonably distribute the optical power of the camera lens group to avoid excessive concentration on one or two lenses, so that the marginal rays have a better convergence on the imaging surface, which helps to increase the imaging area of the camera lens group and helps to correct the coma of the camera lens group, so that the camera lens group has better imaging quality.

[0042] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula f / EPD < 1.9, where f is the effective focal length of the optical imaging lens and EPD is the entrance pupil diameter of the optical imaging lens. By controlling f / EPD < 1.9, the light passing amount of the lens can be effectively increased, so that it has a higher relative illuminance, and the resolution of the lens in a darker environment can be well improved, making the lens more practical. More specifically, the following relationship can be satisfied between f and EPD: 1.84 ≤ f / EPD ≤ 1.87.

[0043] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula TTL / ImgH ≤ 1.25, where TTL is the axial distance from the object side of the first lens to the imaging surface, and ImgH is half of the diagonal length of the effective pixel area on the imaging surface. By controlling TTL / ImgH ≤ 1.25, while ensuring the basic imaging height, the problem of excessive overall size of the camera lens group caused by the excessive thickness of the first lens can be avoided, which is beneficial to the camera lens group to maintain the ultra-small characteristics. More specifically, the following relationship can be satisfied between TTL and ImgH: 1.20 ≤ TTL / ImgH ≤ 1.25.

[0044] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 1.7 < (f1 + f4) / f < 2.2, where f1 is the effective focal length of the first lens, f4 is the effective focal length of the fourth lens, and f is the effective focal length of the optical imaging lens. By controlling the effective focal lengths of the first lens, the fourth lens and the system, on the one hand, the size of the system can be effectively reduced, on the other hand, the excessive concentration of the system optical power on the first and fourth lenses can be avoided, and at the same time, the spherical aberration contribution of these two lenses can be controlled within a reasonable range, so that the system obtains better imaging quality. More specifically, the following relationship can be satisfied between f1, f4 and f: 1.80 ≤ (f1 + f4) / f ≤ 2.18.

[0045] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 2.4 < f2 / f5 < 4.2, where f2 is the effective focal length of the second lens and f5 is the effective focal length of the fifth lens. By controlling the effective focal length of the second lens and the optical power of the fifth lens, while avoiding excessive concentration of the optical power in the fifth lens, it helps to reduce the sensitivity of the fifth lens, making it have better processing feasibility. More specifically, f2 and f5 satisfy: 2.41 ≤ f2 / f5 ≤ 4.11.

[0046] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 2.0 < (R3 + R4) / (R3 - R4) < 2.6, where R3 is the radius of curvature of the object side surface of the second lens and R4 is the radius of curvature of the image side surface of the second lens. By controlling the radius of curvature of the object side surface and the image side surface of the second lens, it helps to reduce the optical power value of the second lens, making it have better light convergence effect, which not only helps to improve the image quality of the system but also greatly helps to improve the relative illumination of the system; at the same time, it can keep the second lens with good processing technology and improve the practicability of the lens group. More specifically, R3 and R4 satisfy: 2.06 ≤ (R3 + R4) / (R3 - R4) ≤ 2.54.

[0047] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 0.6 < (R2 - R1) / (R2 + R1) < 0.9, where R2 is the radius of curvature of the image side surface of the first lens and R1 is the radius of curvature of the object side surface of the first lens. By reasonably distributing the radius of curvature of the object side surface and the image side surface of the first lens, the astigmatism and coma between the first lens and the subsequent several lenses can be effectively balanced. More specifically, R1 and R2 satisfy: 0.66 ≤ (R2 - R1) / (R2 + R1) ≤ 0.72.

[0048] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 0.5 < CT1 / (CT2 + CT3) < 0.9, where CT1 is the central thickness of the first lens on the optical axis, CT2 is the central thickness of the second lens on the optical axis, and CT3 is the central thickness of the third lens on the optical axis. By reasonably distributing the central thicknesses of the first lens, the second lens, and the third lens on the optical axis, on the one hand, it helps to reduce the system size, and on the other hand, it helps to reduce the spherical aberration of the system; and by controlling the central thicknesses of the first and second lenses and the third lens within a reasonable range, the distortion amount of the system can be effectively reduced, and the ghost image risk caused by internal reflection of light can be reduced. More specifically, CT1, CT2, and CT3 satisfy: 0.54 ≤ CT1 / (CT2 + CT3) ≤ 0.85.

[0049] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 1.5 < T34 / (T12 + T23) < 2.1, where T34 is the air gap between the third lens and the fourth lens on the optical axis, T12 is the air gap between the first lens and the second lens on the optical axis, and T23 is the air gap between the second lens and the third lens on the optical axis. By reasonably controlling the air gap between the first lens and the second lens on the optical axis and the air gap between the second lens and the third lens on the optical axis, it is beneficial to the miniaturization of the system, reduces the ghost image risk brought by the object side of the second lens, and can effectively reduce the chromatic aberration of the system in combination with the air gap between the third lens and the fourth lens on the optical axis. It can ensure the processing and assembly characteristics, and at the same time is beneficial to slowing down the light deflection, adjusting the field curvature of the camera lens group, reducing the sensitivity, thereby improving the yield. More specifically, the following is satisfied among T12, T23, and T34: 1.52 ≤ T34 / (T12 + T23) ≤ 2.05.

[0050] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 3.1 mm < f × tan(1 / 2 FOV) < 3.7 mm, where f is the effective focal length of the optical imaging lens and FOV is the maximum field of view angle of the optical imaging lens. By controlling the effective focal length of the optical imaging lens and the maximum field of view angle of the optical imaging lens, it helps to control the field of view angle of the imaging group within a reasonable range, improve the image height of the system imaging while avoiding excessive aberration in the edge field of view, helps to increase the aperture size of the camera lens group, and has the characteristics of a wide imaging range and high imaging quality. More specifically, the following is satisfied between f and FOV: 3.29 mm ≤ f × tan(1 / 2 FOV) ≤ 3.53 mm.

[0051] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 1.2 < f12 / f < 1.7, where f12 is the combined focal length of the first and second lenses and f is the effective focal length of the optical imaging lens. By reasonably controlling this conditional formula within a reasonable range, on the one hand, it can effectively reduce the size of the system and avoid excessive concentration of the system optical power on the first and second lenses. On the other hand, it can control the spherical aberration contribution of these two lenses within a reasonable range and obtain better resolution. More specifically, the following is satisfied between f12 and f: 1.46 ≤ f12 / f ≤ 1.67.

[0052] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 1.4 < ET5 / CT5 < 2.3, where ET5 is the edge thickness of the fifth lens and CT5 is the central thickness of the fifth lens on the optical axis. By controlling the central thickness of the fifth lens on the optical axis and the edge thickness of the fifth lens, the difficulty in processing caused by the fifth lens being too thin can be avoided, the risk of system ghost images can be effectively reduced, and the processing manufacturability can be improved. More specifically, ET5 and CT5 can satisfy: 1.44 ≤ ET5 / CT5 ≤ 2.20.

[0053] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 1.2 < CT4 / ET4 < 1.8, where CT4 is the central thickness of the fourth lens on the optical axis and ET4 is the edge thickness of the fourth lens. By controlling the central thickness of the fourth lens on the optical axis and the edge thickness of the fourth lens, the performance degradation caused by the fourth lens being too thick can be avoided, and the processing manufacturability of the fourth lens can be improved. More specifically, CT4 and ET4 satisfy: 1.28 ≤ CT4 / ET4 ≤ 1.75.

[0054] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 0.2 < SAG52 / SAG51 < 0.7, where SAG52 is the axial distance between the intersection of the image side of the fifth lens and the optical axis and the vertex of the effective radius of the image side of the fifth lens, and SAG51 is the axial distance between the intersection of the object side of the fifth lens and the optical axis and the vertex of the effective radius of the object side of the fifth lens. By reasonably distributing the sagittal heights of the object side and the image side of the fifth lens, the fifth lens being too curved can be avoided, the processing difficulty can be reduced, the spherical aberration of the camera lens group can be reduced, which helps to improve the spherical aberration of the intermediate field of view and the coma of the edge field of view. More specifically, SAG52 and SAG51 can satisfy: 0.24 ≤ SAG52 / SAG51 ≤ 0.68.

[0055] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 1.2 < DT32 / DT22 < 1.5, where DT32 is the effective semi-aperture of the image side of the third lens and DT22 is the effective semi-aperture of the image side of the second lens. By controlling the effective semi-aperture of the image side of the third lens and the effective semi-aperture of the image side of the second lens, the excessive difference in the effective radii of the image sides of the second lens and the third lens can be effectively prevented, which is beneficial to the processing and forming of the lens and is beneficial to improving the stability of the performance of the camera lens group. More specifically, DT32 and DT22 can satisfy: 1.24 ≤ DT32 / DT22 ≤ 1.36.

[0056] In an exemplary embodiment, the above optical imaging lens may further include at least one diaphragm. The diaphragm can be disposed at an appropriate position as needed. For example, it can be disposed between the object side and the first lens. Optionally, the above optical imaging lens may further include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging surface.

[0057] The optical imaging lens according to the above embodiment of the present application may employ multiple lenses, such as the five lenses described above. By reasonably allocating the optical power, surface shape, central thickness of each lens, and the axial spacing between each lens, etc., the optical imaging lens has a large imaging image plane, has a very high cost performance, can provide a large aperture, enabling it to have good imaging quality even in a dim environment, becoming an alternative to six-piece and seven-piece lenses. At the same time, due to its unique lens model, it can provide sufficient space for subsequent related adjustments extremely well, which also makes the related structures and assembly processes more flexible.

[0058] However, those skilled in the art should understand that without departing from the technical solutions claimed in the present application, the number of lenses constituting the optical imaging lens can be changed to obtain the various results and advantages described in this specification. For example, although five lenses are described as an example in the embodiment, the optical imaging lens is not limited to including five lenses. If necessary, the optical imaging lens may further include other numbers of lenses.

[0059] The following further describes specific embodiments of the optical imaging lens applicable to the above embodiments with reference to the accompanying drawings.

[0060] Embodiment 1

[0061] Figure 1 The following shows a schematic structural diagram of the optical imaging lens according to the first embodiment of the present invention. As Figure 1 shown, this camera lens assembly includes, in sequence from the object side to the image side, a diaphragm STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.

[0062] Among them, the first lens E1 has a positive optical power, its object side S1 is a convex surface, and its image side S2 is a concave surface; the second lens E2 has a negative optical power, its object side S3 is a convex surface, and its image side S4 is a concave surface; the third lens E3 has a positive optical power, its object side S5 is a concave surface, and its image side S6 is a convex surface; the fourth lens E4 has a positive optical power, its object side S7 is a concave surface, and its image side S8 is a convex surface; the fifth lens E5 has a negative optical power, its object side S9 is a concave surface, and its image side S10 is a concave surface. Light from the object sequentially passes through each surface S1 to S12 and finally forms an image on the imaging surface S13.

[0063] Table 1 shows the basic parameters of the optical imaging lens of the first embodiment, where the radius of curvature, thickness, and focal length are in millimeters.

[0064] Surface Number Surface Type Radius of Curvature Thickness Focal Length Refractive Index Dispersion Coefficient Conic Coefficient OBJ Spherical Surface Infinity Infinity STO Spherical Surface Infinity -0.2933 S1 Aspherical Surface 1.6354 0.6041 3.65 1.55 56.1 -0.3622 S2 Aspherical Surface 7.9248 0.0684 -21.5845 S3 Aspherical Surface 7.3020 0.2800 -8.70 1.67 20.4 51.9333 S4 Aspherical Surface 3.1808 0.3379 6.8233 S5 Aspherical Surface -181.4709 0.4283 16.64 1.55 56.1 -99.0000 S6 Aspherical Surface -8.6576 0.6157 -87.5001 S7 Aspherical Surface -24.5527 0.6004 2.98 1.55 56.1 -94.1600 S8 Aspherical Surface -1.5411 0.3339 -2.3073 S9 Aspherical Surface -27.2074 0.4652 -2.12 1.54 55.7 -47.7766 S10 Aspherical Surface 1.1936 0.2870 -6.0633 S11 Spherical Surface Infinity 0.2100 1.52 64.2 S12 Spherical Surface Infinity 0.3711 S13 Spherical Surface Infinity

[0065] Table 1

[0066] In Embodiment 1, the value of the total effective focal length f of the optical imaging lens is 3.69 mm, the value of the on-axis distance TTL from the object side S1 of the first lens E1 to the imaging surface S15 is 4.60 mm, and the value of half of the diagonal length ImgH of the effective pixel region on the imaging surface S15 is 3.70 mm.

[0067] In the first embodiment, for the effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens, the relationship f / EPD = 1.87 satisfies f / EPD < 1.9.

[0068] In the first embodiment, for the on-axis distance TTL from the object side of the first lens to the imaging surface and half of the diagonal length ImgH of the effective pixel region on the imaging surface, the relationship TTL / ImgH = 1.24 satisfies TTL / ImgH ≤ 1.25.

[0069] In the first embodiment, for the effective focal length f1 of the first lens, the effective focal length f4 of the fourth lens, and the effective focal length of the optical imaging lens, the relationship (f1 + f4) / f = 1.80 satisfies 1.7 < (f1 + f4) / f < 2.2.

[0070] In the first embodiment, for the effective focal length f2 of the second lens and the effective focal length f5 of the fifth lens, the relationship f2 / f5 = 4.11 satisfies 2.4 < f2 / f5 < 4.2.

[0071] In the first embodiment, for the radius of curvature R3 of the object side of the second lens and the radius of curvature R4 of the image side of the second lens, the relationship (R3 + R4) / (R3 - R4) = 2.54 satisfies 2.0 < (R3 + R4) / (R3 - R4) < 2.6.

[0072] In the first embodiment, for the radius of curvature R2 of the image side of the first lens and the radius of curvature R1 of the object side of the first lens, the relationship (R2 - R1) / (R2 + R1) = 0.66 satisfies 0.6 < (R2 - R1) / (R2 + R1) < 0.9.

[0073] In the first embodiment, for the central thickness CT1 of the first lens on the optical axis, the central thickness CT2 of the second lens on the optical axis, and the central thickness CT3 of the third lens on the optical axis, the relationship CT1 / (CT2 + CT3) = 0.85 satisfies 0.5 < CT1 / (CT2 + CT3) < 0.9.

[0074] In this first embodiment, for the air gap T34 between the third lens and the fourth lens on the optical axis, the air gap T12 between the first lens and the second lens on the optical axis, and the air gap T23 between the second lens and the third lens on the optical axis, the relational expression T34 / (T12 + T23) = 1.52 satisfies 1.5 < T34 / (T12 + T23) < 2.1.

[0075] In this first embodiment, for the effective focal length f of the optical imaging lens and the maximum field of view FOV of the optical imaging lens, the relational expression f×tan(1 / 2 FOV) = 3.53 satisfies 3.1 mm < f×tan(1 / 2 FOV) < 3.7 mm.

[0076] In this first embodiment, for the combined focal length f12 of the first lens and the second lens and the effective focal length f of the optical imaging lens, the relational expression f12 / f = 1.46 satisfies 1.2 < f12 / f < 1.7.

[0077] In this first embodiment, for the edge thickness ET5 of the fifth lens and the central thickness CT5 of the fifth lens on the optical axis, the relational expression ET5 / CT5 = 1.44 satisfies 1.4 < ET5 / CT5 < 2.3.

[0078] In this first embodiment, for the central thickness CT4 of the fourth lens on the optical axis and the edge thickness ET4 of the fourth lens, the relational expression CT4 / ET4 = 1.75 satisfies 1.2 < CT4 / ET4 < 1.8.

[0079] In this first embodiment, for the axial distance SAG52 between the intersection of the image side surface of the fifth lens and the optical axis and the vertex of the effective radius of the image side surface of the fifth lens, and the axial distance SAG51 between the intersection of the object side surface of the fifth lens and the optical axis and the vertex of the effective radius of the object side surface of the fifth lens, the relational expression SAG52 / SAG51 = 0.65 satisfies 0.2 < SAG52 / SAG51 < 0.7.

[0080] In this first embodiment, for the effective semi-aperture DT32 of the image side surface of the third lens and the effective semi-aperture DT22 of the image side surface of the second lens, the relational expression DT32 / DT22 = 1.36 satisfies 1.2 < DT32 / DT22 < 1.5.

[0081] In this first embodiment, the object side surface and the image side surface of any one of the first lens E1 to the fifth lens E5 are aspherical surfaces, and the surface profile x of each aspherical lens can be defined by, but not limited to, the following aspherical formula:

[0082]

[0083] Among them, x is the sagitta, which is the distance from the vertex of the aspherical surface to the position along the optical axis at a height of h; 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 (given in Table 1); Ai is the correction coefficient of the i-th order of the aspherical surface.

[0084] Table 2 below gives the higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 of each aspherical surface S1 - S10 of each aspherical lens that can be used in the first embodiment of the present application.

[0085] Surface Number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 6.3439E-03 1.6971E-02 -1.0983E-01 3.7930E-01 -8.1404E-01 9.9927E-01 -6.7353E-01 2.0286E-01 -1.2732E-02 S2 -1.0874E-01 8.3615E-02 3.1266E-01 -1.7720E+00 4.8372E+00 -8.3284E+00 8.7995E+00 -5.1630E+00 1.2785E+00 S3 -1.4146E-01 1.5682E-01 2.9774E-01 -1.6349E+00 3.9375E+00 -6.1878E+00 6.2957E+00 -3.7072E+00 9.3450E-01 S4 -6.5434E-02 2.5854E-01 -1.2804E+00 6.7251E+00 -2.2344E+01 4.5482E+01 -5.5402E+01 3.7159E+01 -1.0547E+01 S5 -1.1791E-01 -6.5044E-02 4.8935E-01 -2.7106E+00 8.4503E+00 -1.6296E+01 1.9082E+01 -1.2523E+01 3.5769E+00 S6 -1.2202E-01 1.2101E-01 -7.1211E-01 2.0889E+00 -3.8235E+00 4.3332E+00 -2.9481E+00 1.0934E+00 -1.6643E-01 S7 1.6125E-02 -8.6377E-02 1.4228E-01 -1.7642E-01 1.4001E-01 -7.1787E-02 2.2668E-02 -3.9206E-03 2.8094E-04 S8 7.7497E-02 -1.4470E-01 1.7370E-01 -1.2393E-01 5.5582E-02 -1.5747E-02 2.7249E-03 -2.6204E-04 1.0687E-05 S9 -2.3973E-01 1.3621E-01 -4.2312E-02 9.3942E-03 -1.6281E-03 2.1650E-04 -2.0138E-05 1.1282E-06 -2.8105E-08 S10 -1.0545E-01 6.2407E-02 -2.4916E-02 6.5259E-03 -1.0904E-03 1.0848E-04 -5.6923E-06 1.1094E-07 6.9731E-10

[0086] Table 2

[0087] Figure 2 Shown is the axial chromatic aberration curve of the optical imaging lens in the first embodiment of the present example, which represents the deviation of the converging focal points of light rays of different wavelengths after passing through the lens. Figure 3 Shown is the astigmatism curve of the optical imaging lens in the first embodiment of the present example, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 4 Shown is the distortion curve of the optical imaging lens in the first embodiment of the present example, which represents the distortion magnitude values corresponding to different image heights. Figure 5 Shown is the lateral chromatic aberration curve of the optical imaging lens in the first embodiment of the present example, which represents the deviation of different image heights on the imaging plane after the light rays pass through the lens. According to Figures 2 to 5 It can be seen that the optical imaging lens given in the first embodiment of the present example can achieve good imaging quality.

[0088] Embodiment 2

[0089] Figure 6 Shown is the structural schematic diagram of the optical imaging lens according to the second embodiment of the present invention. As Figure 6 shown, the imaging lens assembly sequentially includes, from the object side to the image side, a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging plane S13.

[0090] Among them, the first lens E1 has a positive optical power, its object side S1 is a convex surface, and its image side S2 is a concave surface; the second lens E2 has a negative positive optical power, its object side S3 is a convex surface, and its image side S4 is a concave surface; the third lens E3 has a positive optical power, its object side S5 is a concave surface, and its image side S6 is a convex surface; the fourth lens E4 has a positive optical power, its object side S7 is a convex surface, and its image side S8 is a convex surface; the fifth lens E5 has a negative optical power, its object side S9 is a concave surface, and its image side S10 is a concave surface. Light from the object sequentially passes through each surface S1 to S12 and finally forms an image on the imaging plane S13.

[0091] Table 3 shows the basic parameters of the optical imaging lens of the second embodiment, where the radius of curvature, thickness, and focal length are in millimeters.

[0092] Surface Number Surface Type Radius of Curvature Thickness Focal Length Refractive Index Dispersion Coefficient Conic Coefficient OBJ Spherical Surface Infinity Infinity STO Spherical Surface Infinity -0.2888 S1 Aspherical Surface 1.8072 0.7033 3.97 1.55 56.1 -0.0983 S2 Aspherical Surface 9.3432 0.0628 12.4863 S3 Aspherical Surface 9.8155 0.3235 -8.80 1.67 20.4 54.4582 S4 Aspherical Surface 3.6202 0.2973 4.9078 S5 Aspherical Surface -281.4161 0.5750 15.55 1.55 56.1 -99.0000 S6 Aspherical Surface -8.2484 0.6465 -45.7298 S7 Aspherical Surface 32.6372 0.6066 3.66 1.55 56.1 -99.0000 S8 Aspherical Surface -2.1128 0.4289 -1.2869 S9 Aspherical Surface -24.8251 0.4210 -2.91 1.54 55.7 38.0846 S10 Aspherical Surface 1.6745 0.2686 -5.7155 S11 Spherical Surface Infinity 0.2310 1.52 64.2 S12 Spherical Surface Infinity 0.4354 S13 Spherical Surface Infinity

[0093] Table 3

[0094] In Embodiment 2, the value of the total effective focal length f of the optical imaging lens is 3.90 mm, the value of the on-axis distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S15 is 5.00 mm, and the value of half of the diagonal length of the effective pixel region on the imaging surface S15, ImgH, is 4.00 mm.

[0095] The following Table 4 gives the higher-order term coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 of each aspherical surface S1 - S10 of each aspherical lens that can be used in the second embodiment of the present application. Among them, the aspherical surface types can be defined by the formula (1) given in the above Embodiment 1.

[0096]

[0097]

[0098] Table 4

[0099] Figure 7 Shown is the axial chromatic aberration curve of the optical imaging lens in the second embodiment of the present application, which represents the deviation of the converging focal points of light rays of different wavelengths after passing through the lens. Figure 8 Shown is the astigmatism curve of the optical imaging lens in the second embodiment of the present application, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 9 Shown is the distortion curve of the optical imaging lens in the second embodiment of the present application, which represents the distortion magnitude values corresponding to different image heights. Figure 10 Shown is the lateral chromatic aberration curve of the optical imaging lens in the second embodiment of the present application, which represents the deviation of different image heights of light rays on the imaging surface after passing through the lens. According to Figures 7 to 10 It can be seen that the optical imaging lens given in the second embodiment of the present application can achieve good imaging quality.

[0100] Embodiment 3

[0101] Figure 11 Shown is the structural schematic diagram of the optical imaging lens of the third embodiment of the present invention. As Figure 11 shown, this camera lens assembly sequentially includes, from the object side to the image side, a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.

[0102] Among them, the first lens E1 has a positive optical power, its object side S1 is convex, and its image side S2 is concave; the second lens E2 has a negative optical power, its object side S3 is convex, and its image side S4 is concave; the third lens E3 has a positive optical power, its object side S5 is convex, and its image side S6 is convex; the fourth lens E4 has a positive optical power, its object side S7 is concave, and its image side S8 is convex; the fifth lens E5 has a negative optical power, its object side S9 is concave, and its image side S10 is concave. The light from the object sequentially passes through the surfaces S1 to S12 and finally forms an image on the imaging surface S13.

[0103] Table 5 shows the basic parameters of the optical imaging lens according to the third embodiment of the present application. Among them, the radius of curvature, thickness, and focal length are all in millimeters.

[0104]

[0105]

[0106] Table 5

[0107] In Embodiment 3, the value of the total effective focal length f of the optical imaging lens is 3.52 mm, the value of the on-axis distance TTL from the object side S1 of the first lens E1 to the imaging surface S15 is 4.70 mm, and the value of half of the diagonal length of the effective pixel region on the imaging surface S15, ImgH, is 3.86 mm.

[0108] The following Table 6 gives the high-order term coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 of each aspherical surface S1 - S10 of the aspherical lenses that can be used in the third embodiment of the present application. Among them, the aspherical surface types can be defined by the formula (1) given in Embodiment 1 above.

[0109] Surface Number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 6.7504E-03 -8.2402E-03 7.5604E-02 -2.1837E-01 3.6641E-01 -3.4602E-01 1.5692E-01 -9.9013E-03 -1.1882E-02 S2 -1.0588E-01 1.2458E-01 1.8473E-01 -9.6927E-01 1.8142E+00 -1.9066E+00 1.1165E+00 -3.2591E-01 3.4229E-02 S3 -1.5807E-01 2.9434E-01 -4.0482E-01 8.3475E-01 -2.0372E+00 3.4238E+00 -3.4173E+00 1.8215E+00 -3.9719E-01 S4 -6.7733E-02 1.2577E-01 -2.4142E-01 1.3294E+00 -5.0692E+00 1.0975E+01 -1.3589E+01 9.0523E+00 -2.5174E+00 S5 -1.0181E-01 1.6586E-01 -1.1541E+00 4.2433E+00 -9.7434E+00 1.3885E+01 -1.2002E+01 5.7268E+00 -1.1386E+00 S6 -9.3133E-02 4.9825E-02 -2.0619E-01 4.6632E-01 -7.5690E-01 7.9654E-01 -5.1065E-01 1.7849E-01 -2.5285E-02 S7 -4.8511E-02 1.1379E-01 -2.4477E-01 2.5192E-01 -1.5153E-01 5.2359E-02 -9.0799E-03 4.6774E-04 3.2881E-05 S8 4.6592E-02 -5.0205E-02 4.4408E-02 -4.4967E-02 3.4028E-02 -1.4691E-02 3.5384E-03 -4.4934E-04 2.3587E-05 S9 -1.5007E-01 1.1941E-02 3.5893E-02 -1.8233E-02 4.1577E-03 -5.0371E-04 3.0481E-05 -5.9159E-07 -1.1278E-08 S10 -1.1311E-01 5.6648E-02 -2.0217E-02 5.1788E-03 -9.3125E-04 1.1331E-04 -8.8248E-06 3.9460E-07 -7.6722E-09

[0110] Table 6

[0111] Figure 12 Shown is the axial chromatic aberration curve of the optical imaging lens according to the third embodiment of the present application, which represents the deviation of the converging focal points of light rays of different wavelengths after passing through the lens. Figure 13 Shown is the astigmatism curve of the optical imaging lens according to the third embodiment of the present application, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 14 Shown is the distortion curve of the optical imaging lens according to the third embodiment of the present application, which represents the distortion magnitude values corresponding to different image heights. Figure 15 Shown is the lateral chromatic aberration curve of the optical imaging lens according to the third embodiment of the present application, which represents the deviation of different image heights of light rays on the imaging surface after passing through the lens. According to Figures 12 to 15It can be seen that the optical imaging lens provided in the third embodiment of the present application can achieve good imaging quality.

[0112] Embodiment 4

[0113] Figure 16 The following shows a schematic structural diagram of the optical imaging lens according to the fourth embodiment of the present invention. As Figure 16 shown, the imaging lens assembly sequentially includes, from the object side to the image side, a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.

[0114] Among them, the first lens E1 has a positive optical power, its object side S1 is a convex surface, and its image side S2 is a concave surface; the second lens E2 has a negative positive optical power, its object side S3 is a convex surface, and its image side S4 is a concave surface; the third lens E3 has a positive optical power, its object side S5 is a concave surface, and its image side S6 is a convex surface; the fourth lens E4 has a positive optical power, its object side S7 is a concave surface, and its image side S8 is a convex surface; the fifth lens E5 has a negative optical power, its object side S9 is a concave surface, and its image side S10 is a concave surface. Light from the object sequentially passes through the surfaces S1 to S12 and finally forms an image on the imaging surface S13.

[0115] Table 7 shows the basic parameters of the optical imaging lens according to the fourth embodiment of the present application. Among them, the radius of curvature, thickness, and focal length are in millimeters.

[0116] Surface Number Surface Type Radius of Curvature Thickness Focal Length Refractive Index Dispersion Coefficient Conic Coefficient OBJ Spherical Surface Infinity Infinity STO Spherical Surface Infinity -0.3577 S1 Aspherical Surface 1.7722 0.5534 3.79 1.55 56.1 0.0244 S2 Aspherical Surface 10.9529 0.0527 25.9236 S3 Aspherical Surface 9.1892 0.4966 -7.53 1.67 20.4 36.3211 S4 Aspherical Surface 3.1738 0.3568 5.2208 S5 Aspherical Surface -76.2671 0.5178 12.03 1.55 56.1 99.0000 S6 Aspherical Surface -6.0631 0.7649 8.7880 S7 Aspherical Surface -99.2193 0.5889 4.67 1.55 56.1 99.0000 S8 Aspherical Surface -2.4920 0.5480 -1.3429 S9 Aspherical Surface -38.7224 0.4283 -3.00 1.54 55.7 75.8506 S10 Aspherical Surface 1.6835 0.3127 -4.3272 S11 Spherical Surface Infinity 0.2415 1.52 64.2 S12 Spherical Surface Infinity 0.1883 S13 Spherical Surface Infinity

[0117] Table 7

[0118] In Embodiment 4, the value of the total effective focal length f of the optical imaging lens is 3.97 mm, the value of the on-axis distance TTL from the object side S1 of the first lens E1 to the imaging surface S15 is 5.05 mm, and the value of half of the diagonal length of the effective pixel region on the imaging surface S15, ImgH, is 4.20 mm.

[0119] The following Table 8 gives the higher-order term coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 of the aspherical surfaces S1 - S10 that can be used for each aspherical lens in the fourth embodiment of the present application. Among them, the aspherical surface profiles can be defined by the formula (1) given in Embodiment 1 above.

[0120] Surface Number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 2.4999E-03 1.1485E-02 -5.1109E-02 1.9165E-01 -4.2104E-01 5.6643E-01 -4.5676E-01 2.0372E-01 -3.8728E-02 S2 -7.8178E-02 1.1539E-01 -1.8755E-01 4.9185E-01 -1.0061E+00 1.2433E+00 -8.7818E-01 3.2343E-01 -4.7910E-02 S3 -8.9975E-02 1.1127E-01 -1.4217E-01 3.9603E-01 -9.5370E-01 1.3638E+00 -1.1124E+00 4.7737E-01 -8.3257E-02 S4 -3.2410E-02 5.4771E-02 -1.3450E-01 4.4239E-01 -1.0104E+00 1.4880E+00 -1.3598E+00 7.0828E-01 -1.5988E-01 S5 -7.6536E-02 -3.2734E-02 2.1547E-01 -1.1513E+00 3.1879E+00 -5.2782E+00 5.1693E+00 -2.7774E+00 6.3389E-01 S6 -4.1675E-02 -2.9570E-01 2.2804E+00 -1.1328E+01 3.7210E+01 -8.4850E+01 1.3786E+02 -1.6161E+02 1.3686E+02 S7 -2.3428E-02 4.9018E-02 -1.9985E-01 4.1921E-01 -5.8823E-01 5.6585E-01 -3.8095E-01 1.8006E-01 -5.8913E-02 S8 4.0336E-02 -6.4973E-02 1.1945E-01 -1.8742E-01 2.1854E-01 -1.8117E-01 1.0413E-01 -4.1079E-02 1.1049E-02 S9 -1.0466E-01 -1.2478E-01 2.7060E-01 -2.4653E-01 1.3940E-01 -5.3198E-02 1.4199E-02 -2.6943E-03 3.6412E-04 S10 -3.3852E-02 -1.0131E-01 1.5317E-01 -1.1234E-01 5.2400E-02 -1.6896E-02 3.9068E-03 -6.5823E-04 8.0963E-05

[0121] Table 8

[0122] Figure 17 The following shows the axial chromatic aberration curve of the optical imaging lens in the fourth embodiment of the present application, which represents the deviation of the convergence focal points of light rays of different wavelengths after passing through the lens.Figure 18 The astigmatism curve of the optical imaging lens in the fourth embodiment of the present application is shown, which represents the curvature of the meridional image plane and the sagittal image plane. Figure 19 The distortion curve of the optical imaging lens in the fourth embodiment of the present application is shown, which represents the distortion values corresponding to different image heights. Figure 20 The longitudinal chromatic aberration curve of the optical imaging lens in the fourth embodiment of the present application is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to Figures 17 to 20 it can be seen that the optical imaging lens given in the fourth embodiment of the present application can achieve good imaging quality.

[0123] Embodiment Five

[0124] Figure 21 The structural schematic diagram of the optical imaging lens in the fifth embodiment of the present invention is shown. As Figure 21 shown, this camera lens assembly includes, in sequence from the object side to the image side, a diaphragm STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.

[0125] Among them, the first lens E1 has a positive optical power, its object side S1 is a convex surface, and its image side S2 is a concave surface; the second lens E2 has a negative optical power, its object side S3 is a convex surface, and its image side S4 is a concave surface; the third lens E3 has a positive optical power, its object side S5 is a concave surface, and its image side S6 is a convex surface; the fourth lens E4 has a positive optical power, its object side S7 is a concave surface, and its image side S8 is a convex surface; the fifth lens E5 has a negative optical power, its object side S9 is a concave surface, and its image side S10 is a concave surface. Light from the object sequentially passes through each surface S1 to S12 and finally forms an image on the imaging surface S13.

[0126] Table 9 shows the basic parameters of the optical imaging lens in the fifth embodiment of the present application, where the radius of curvature, thickness, and focal length are all in millimeters.

[0127]

[0128]

[0129] Table 9

[0130] In Embodiment 5, the value of the total effective focal length f of the optical imaging lens is 3.81 mm, the value of the on-axis distance TTL from the object side S1 of the first lens E1 to the imaging surface S15 is 4.90 mm, and the value of half of the diagonal length of the effective pixel area on the imaging surface S15, ImgH, is 4.10 mm.

[0131] Table 10 below gives the higher-order term coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 of the aspherical surfaces S1-S10 of the aspherical lenses that can be used in the fifth embodiment of the present application. Among them, the aspherical surface profiles can be defined by formula (1) given in Embodiment 1 above.

[0132] Surface Number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 1.8855E-03 1.3456E-02 -6.0755E-02 2.2793E-01 -4.9702E-01 6.6035E-01 -5.2483E-01 2.3123E-01 -4.3680E-02 S2 -8.8433E-02 1.3578E-01 -1.9512E-01 4.7113E-01 -9.9552E-01 1.2978E+00 -9.6698E-01 3.7430E-01 -5.8077E-02 S3 -1.0200E-01 1.3838E-01 -1.8259E-01 5.0690E-01 -1.2593E+00 1.8671E+00 -1.5741E+00 6.9552E-01 -1.2448E-01 S4 -3.8501E-02 6.3521E-02 -1.3021E-01 3.8424E-01 -8.0929E-01 1.0782E+00 -8.7162E-01 3.9608E-01 -7.7017E-02 S5 -8.4313E-02 1.5098E-02 -5.1307E-02 -2.9063E-01 1.5079E+00 -3.3166E+00 3.8640E+00 -2.3509E+00 5.9072E-01 S6 -4.9948E-02 -2.0084E-01 1.6075E+00 -8.3913E+00 2.8864E+01 -6.9131E+01 1.1839E+02 -1.4669E+02 1.3152E+02 S7 -2.9919E-02 5.1727E-02 -1.0875E-01 4.3981E-02 1.5179E-01 -3.3437E-01 3.5185E-01 -2.3213E-01 1.0205E-01 S8 3.7581E-02 -5.8106E-02 1.5788E-01 -3.2895E-01 4.2982E-01 -3.6553E-01 2.0878E-01 -8.1363E-02 2.1684E-02 S9 -1.1261E-01 -8.1362E-02 1.8709E-01 -1.6986E-01 9.8901E-02 -3.9882E-02 1.1463E-02 -2.3819E-03 3.5905E-04 S10 -2.8591E-02 -9.0651E-02 1.2495E-01 -8.4180E-02 3.5870E-02 -1.0487E-02 2.1841E-03 -3.2969E-04 3.6188E-05

[0133] Table 10

[0134] Figure 22 The axial chromatic aberration curve of the optical imaging lens in the fifth embodiment of the present application is shown, which represents the deviation of the converging focal points of light rays of different wavelengths after passing through the lens. Figure 23 The astigmatism curve of the optical imaging lens in the fifth embodiment of the present application is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 24 The distortion curve of the optical imaging lens in the fifth embodiment of the present application is shown, which represents the distortion magnitude values corresponding to different image heights. Figure 25 The lateral chromatic aberration curve of the optical imaging lens in the fifth embodiment of the present application is shown, which represents the deviation of different image heights on the imaging plane after the light rays pass through the lens. According to Figures 22 to 25 It can be seen that the optical imaging lens given in the fifth embodiment of the present application can achieve good imaging quality.

[0135] In summary, in Embodiments 1-5 of the present application, the optical parameters are as shown in Table 11 below:

[0136] Example Parameters 1 2 3 4 5 f1 (mm) 3.65 3.97 3.67 3.79 3.74 f2 (mm) -8.70 -8.80 -7.59 -7.53 -7.40 f3 (mm) 16.64 15.55 10.49 12.03 11.43 f4 (mm) 2.98 3.66 3.80 4.67 4.58 f5 (mm) -2.12 -2.91 -2.83 -3.00 -3.08 f (mm) 3.69 3.90 3.52 3.97 3.81 TTL (mm) 4.60 5.00 4.70 5.05 4.90 ImgH (mm) 3.70 4.00 3.86 4.20 4.10

[0137] Table 11

[0138] In Embodiments 1-5 of the present application, each conditional expression satisfies the conditions in Table 12 below:

[0139] Condition Equation / Example 1 2 3 4 5 f / EPD 1.87 1.87 1.85 1.87 1.84 TTL / ImgH 1.24 1.25 1.22 1.20 1.20 (f1 + f4) / f 1.80 1.96 2.12 2.13 2.18 f2 / f5 4.11 3.03 2.68 2.51 2.41 (R3 + R4) / (R3 - R4) 2.54 2.17 2.19 2.06 2.07 (R2 - R1) / (R2 + R1) 0.66 0.68 0.68 0.72 0.71 CT1 / (CT2 + CT³) 0.85 0.78 0.68 0.55 0.54 T34 / (T12 + T23) 1.52 1.80 1.93 1.87 2.05 f × tan(1 / 2 FOV) (mm) 3.53 3.48 3.29 3.51 3.42 f12 / f 1.46 1.56 1.67 1.54 1.59 ET5 / CT5 1.44 2.20 1.64 1.66 2.12 CT4 / ET4 1.75 1.29 1.39 1.28 1.37 SAG52 / SAG51 0.65 0.24 0.62 0.68 0.42 DT32 / DT22 1.36 1.28 1.36 1.33 1.24

[0140] Table 12

[0141] The present application also provides an imaging device, which is provided with an electronic photosensitive element for imaging. The electronic photosensitive element can be a charge-coupled device (CCD) or a complementary metal oxide semiconductor element (CMOS). The imaging device can be an independent imaging device such as a digital camera, or an imaging module integrated on a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens described above.

[0142] The above description is only a preferred embodiment of the present application and an explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solutions formed by the 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 technical solutions formed by mutually replacing the above features with the technical features (but not limited to) disclosed in the present application that have similar functions.

Claims

1. An optical imaging lens, characterized in that, The number of lenses with optical power in the optical imaging lens is five, and these five lenses are sequentially arranged from the object side to the image side along the optical axis as follows: A first lens with positive optical power, having a convex object side surface and a concave image side surface; A second lens with negative optical power, having a convex object side surface and a concave image side surface; A third lens with positive optical power, having a convex image side surface; A fourth lens with positive optical power, having a convex image side surface; A fifth lens with negative optical power, having a concave object side surface and a concave image side surface; Wherein, the effective focal length f of the optical imaging lens, the entrance pupil diameter EPD of the optical imaging lens, the on-axis distance TTL from the object side surface of the first lens to the imaging surface, and half of the diagonal length ImgH of the effective pixel region on the imaging surface satisfy: 1.84 ≤ f / EPD < 1.9; and 1.20 ≤ TTL / ImgH ≤ 1.25; Between the curvature radius R3 of the object side surface of the second lens and the curvature radius R4 of the image side surface of the second lens, it satisfies: 2.06 ≤ (R3 + R4) / (R3 - R4) ≤ 2.54; Between the air gap T34 on the optical axis between the third lens and the fourth lens, the air gap T12 on the optical axis between the first lens and the second lens, and the air gap T23 on the optical axis between the second lens and the third lens, it satisfies: 1.5 < T34 / (T12 + T23) < 2.1; Between the curvature radius R2 of the image side surface of the first lens and the curvature radius R1 of the object side surface of the first lens, it satisfies: 0.66 ≤ (R2 - R1) / (R2 + R1) ≤ 0.

72.

2. The optical imaging lens according to claim 1, wherein Between the effective focal length f1 of the first lens, the effective focal length f4 of the fourth lens, and the effective focal length f of the optical imaging lens, it satisfies: 1.8 ≤ (f1 + f4) / f < 2.

2.

3. The optical imaging lens according to claim 1, characterized in that Between the effective focal length f2 of the second lens and the effective focal length f5 of the fifth lens, it satisfies: 2.4 < f2 / f5 ≤ 4.

11.

4. The optical imaging lens according to claim 1, characterized in that, Between the central thickness CT1 of the first lens on the optical axis, the central thickness CT2 of the second lens on the optical axis, and the central thickness CT3 of the third lens on the optical axis, it satisfies: 0.5 < CT1 / (CT2 + CT3) < 0.

9.

5. The optical imaging lens according to claim 1, wherein, Between the effective focal length f of the optical imaging lens and the maximum field of view FOV of the optical imaging lens, it satisfies: 3.29mm ≤ f × tan(1 / 2FOV) ≤ 3.53mm.

6. The optical imaging lens according to claim 1, wherein Between the combined focal length f12 of the first lens and the second lens and the effective focal length f of the optical imaging lens, it satisfies: 1.46 ≤ f12 / f < 1.

7.

7. The optical imaging lens according to claim 1, wherein Between the edge thickness ET5 of the fifth lens and the central thickness CT5 of the fifth lens on the optical axis, it satisfies: 1.4 < ET5 / CT5 ≤ 2.

2.

8. The optical imaging lens according to claim 1, characterized in that, Between the central thickness CT4 of the fourth lens on the optical axis and the edge thickness ET4 of the fourth lens, it satisfies: 1.28 ≤ CT4 / ET4 < 1.

8.

9. The optical imaging lens according to claim 1, wherein The axial distance SAG52 between the intersection point of the image side surface of the fifth lens and the optical axis and the vertex of the effective radius of the image side surface of the fifth lens and the axial distance SAG51 between the intersection point of the object side surface of the fifth lens and the optical axis and the vertex of the effective radius of the object side surface of the fifth lens satisfy: 0.2 < SAG52 / SAG51 < 0.

7.

10. The optical imaging lens according to claim 1, characterized in that, The effective semi-aperture DT32 of the image side surface of the third lens and the effective semi-aperture DT22 of the image side surface of the second lens satisfy: 1.2 < DT32 / DT22 ≤ 1.36.

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