Optical imaging lens

Abstract

The present application discloses an optical imaging lens, which includes, in order from the object side to the image side along the optical axis: a first lens having positive optical power; a second lens having negative optical power; a third lens having optical power; a fourth lens having optical power; a fifth lens having negative optical power; a sixth lens having positive optical power; and a seventh lens having negative optical power; wherein the third lens and the fourth lens form a cemented lens, the refractive index of the third lens is greater than the refractive index of the fourth lens, and the refractive index of the third lens is greater than 1.70; the curvature radius R5 of the object-side surface of the third lens, the curvature radius R8 of the image-side surface of the fourth lens, the effective focal length f34 of the cemented lens, and the total effective focal length f of the optical imaging lens satisfy the following conditions: 7.5<|R5 / R8|+f34 / f<14.0.

Description

Technical Field

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

[0002] In recent years, driven by science and technology, the semiconductor industry has rapidly developed, leading to the rapid growth of the smartphone industry. As a key component of smartphone hardware, the imaging quality of optical imaging lenses is a key factor in measuring a smartphone's performance.

[0003] Currently, the optical imaging lenses used in smartphones are gradually trending toward larger image areas, ultra-thin design, and larger apertures. Specifically, optical imaging lenses with large image areas offer better image quality; ultra-thin optical imaging lenses are smaller overall; and optical imaging lenses with large apertures allow for greater light intake, resulting in clearer images in dark environments. However, due to aperture and size limitations, optical imaging lenses with large image areas exhibit poor chromatic aberration, making it difficult to guarantee optimal image quality.

[0004] Therefore, how to improve the chromatic aberration performance of an optical imaging lens with a large image plane characteristic is one of the urgent technical issues faced by those skilled in the art. Summary of the Invention

[0005] The present application provides an optical imaging lens, which includes, in order from the object side to the image side along the optical axis: a first lens having positive optical power; a second lens having negative optical power; a third lens having optical power; a fourth lens having optical power; a fifth lens having negative optical power; a sixth lens having positive optical power; and a seventh lens having negative optical power; wherein the third lens and the fourth lens form a cemented lens, the refractive index of the third lens is greater than the refractive index of the fourth lens, and the refractive index of the third lens is greater than 1.70; the curvature radius R5 of the object-side surface of the third lens, the curvature radius R8 of the image-side surface of the fourth lens, the effective focal length f34 of the cemented lens, and the total effective focal length f of the optical imaging lens satisfy the following conditions: 7.5<|R5 / R8|+f34 / f<14.0.

[0006] In some embodiments, a curvature radius R3 of the object-side surface of the second lens and a curvature radius R4 of the image-side surface of the second lens satisfy: 2.0<(R3+R4) / (R3-R4)<3.0.

[0007] In some embodiments, the effective focal length f5 of the fifth lens, the curvature radius R9 of the object-side surface of the fifth lens, and the curvature radius R10 of the image-side surface of the fifth lens satisfy: -3.5<f5 / (R9-R10)<-2.5.

[0008] In some embodiments, a center thickness CT3 of the third lens on the optical axis, a center thickness CT4 of the fourth lens on the optical axis, and a separation distance T23 between the second lens and the third lens on the optical axis satisfy: 1.0<(CT3+CT4) / T23<2.0.

[0009] In some embodiments, the effective focal length f1 of the first lens, the center thickness CT1 of the first lens on the optical axis, the effective focal length f2 of the second lens, and the center thickness CT2 of the second lens on the optical axis satisfy: -45.0<f1 / CT1+f2 / CT2<-22.0.

[0010] In some embodiments, the effective focal length f5 of the fifth lens, the separation distance T45 between the fourth lens and the fifth lens on the optical axis, the center thickness CT5 of the fifth lens on the optical axis, and the edge thickness ET5 of the fifth lens satisfy: -6.5<f5 / (T45+CT5+ET5)<-4.5.

[0011] In some embodiments, the curvature radius R12 of the image side surface of the sixth lens, the distance SAG62 from the intersection of the image side surface of the sixth lens and the optical axis to the vertex of the effective radius of the image side surface of the sixth lens on the optical axis, the curvature radius R11 of the object side surface of the sixth lens, and the distance SAG61 from the intersection of the object side surface of the sixth lens and the optical axis to the vertex of the effective radius of the object side surface of the sixth lens on the optical axis satisfy: 1.0≤R12×SAG62 / (R11×SAG61)<47.0.

[0012] In some embodiments, the curvature radius R14 of the image side surface of the seventh lens, the distance SAG72 from the intersection of the image side surface of the seventh lens and the optical axis to the vertex of the effective radius of the image side surface of the seventh lens on the optical axis, the curvature radius R13 of the object side surface of the seventh lens, and the distance SAG71 from the intersection of the object side surface of the seventh lens and the optical axis to the vertex of the effective radius of the object side surface of the seventh lens on the optical axis satisfy: 6.5<|R14×SAG72 / (R13×SAG71)|<15.5.

[0013] In some embodiments, the effective focal length f6 of the sixth lens, the spacing T56 between the fifth lens and the sixth lens on the optical axis, the center thickness CT6 of the sixth lens on the optical axis, and the edge thickness ET6 of the sixth lens satisfy: 3.0<f6 / (T56+CT6+ET6)<4.0.

[0014] In some embodiments, the effective focal length f7 of the seventh lens, the separation distance T67 between the sixth lens and the seventh lens on the optical axis, the center thickness CT7 of the seventh lens on the optical axis, and the edge thickness ET7 of the seventh lens satisfy: -3.0<f7 / (T67+CT7+ET7)<-1.5.

[0015] In some embodiments, the radius of curvature R2 of the image-side surface of the first lens, the radius of curvature R1 of the object-side surface of the first lens, half of the maximum field of view Semi-FOV of the optical imaging lens, and the aperture value Fno of the optical imaging lens satisfy the following conditions: 6.5<(R2 / R1+TAN(Semi-FOV)×Fno<7.5).

[0016] This application adopts a seven-element optical imaging lens architecture. By rationally allocating the focal power and refractive index of each lens to form a cemented lens, it helps improve the chromatic aberration performance of the optical imaging lens with a large image plane characteristic and enhances the imaging quality. Among them, the first lens is set to have a positive focal power, which helps achieve the large aperture characteristic of the optical imaging lens, facilitates the collection of large-angle light from the object side, avoids the generation of difficult-to-correct aberrations as much as possible, and reduces the pressure on the subsequent lenses to correct spherical aberration; the second lens is set to have a negative focal power, which can balance the aberration by cooperating with the first lens, thereby achieving good imaging quality; the third and fourth lenses are set to be cemented lenses, and the refractive index of the third lens is greater than that of the fourth lens, which helps reduce the chromatic aberration of the optical imaging system and improve the imaging quality; the fifth lens is set to have a negative focal power, and the sixth lens is set to have a positive focal power, which is conducive to correcting the on-axis spherical aberration of the optical imaging lens; the seventh lens is set to have a negative focal power, which is conducive to correcting the astigmatism and field curvature of the optical imaging lens. Furthermore, by ensuring that the optical imaging lens satisfies the conditions of 7.5 < |R5 / R8| + f34 / f < 14.0, the curvature of the third and fourth lenses can be effectively controlled, thereby reducing local astigmatism and improving imaging quality. The effective focal length of the third lens can also be effectively controlled, facilitating correction of spherical aberration and enhancing imaging quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0018] Figure 1 1. A schematic structural diagram of the optical imaging lens of Example 1 is shown;

[0019] Figures 2A to 2D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 1 are respectively shown;

[0020] Figure 3 FIG2 shows a schematic structural diagram of an optical imaging lens according to Example 2;

[0021] Figures 4A to 4D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 2 are respectively shown;

[0022] Figure 5FIG2 shows a schematic structural diagram of an optical imaging lens according to Example 3;

[0023] 6A to 6D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 3 are respectively shown;

[0024] Figure 7 Schematic diagram of the structure of the optical imaging lens of Example 4 is shown;

[0025] Figures 8A to 8D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 4 are respectively shown;

[0026] Figure 9 FIG2 shows a schematic structural diagram of an optical imaging lens according to Example 5;

[0027] 10A to 10D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 5 are respectively shown;

[0028] Figure 11 FIG2 shows a schematic structural diagram of an optical imaging lens according to Example 6;

[0029] 12A to 12D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 6 are respectively shown;

[0030] Figure 13 FIG2 shows a schematic structural diagram of an optical imaging lens according to Example 7;

[0031] 14A to 14D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 7 are shown respectively;

[0032] Figure 15 A schematic structural diagram of the optical imaging lens of Example 8 is shown; and

[0033] 16A to 16D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 8 are respectively shown. DETAILED DESCRIPTION

[0034] For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely descriptions of exemplary embodiments of the present application and are not intended to 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.

[0035] It should be noted that in this specification, the terms "first," "second," "third," etc., are used solely to distinguish one feature from another and do not limit the features. Thus, the first lens discussed below could also be referred to as the second lens or the third lens without departing from the teachings of this application.

[0036] In the drawings, the thickness, size, and shape of the lenses are slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical and aspherical surfaces shown in the drawings are provided by way of example. That is, the shapes of the spherical and aspherical surfaces are not limited to those shown in the drawings. The drawings are for illustration only and are not drawn strictly to scale.

[0037] In this article, the paraxial region refers to the area near the optical axis. If a lens surface is convex and the location of the convex surface is undefined, it means that the lens surface is convex at least in the paraxial region. If a lens surface is concave and the location of the concave surface is undefined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the subject is called the object-side surface of the lens, and the surface of each lens closest to the imaging plane is called the image-side surface of the lens.

[0038] It should also be understood that the terms "comprises," "including," "having," "includes," and / or "comprising," when used in this specification, indicate the presence of the stated features, elements, and / or components, but do not preclude the presence or addition of one or more other features, elements, components, and / or combinations thereof. In addition, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire list of features rather than modifying the individual elements in the list. In addition, when describing embodiments of the present application, "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.

[0039] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by those skilled in the art to which this application belongs. It should also be understood that terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology and will not be interpreted in an idealized or overly formal sense unless expressly defined as such herein.

[0040] 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 following examples only express several implementation methods of the present application, and their descriptions are relatively specific and detailed, but they should not be understood as limiting the scope of the patent of this application. It should be pointed out that for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all fall within the scope of protection of the present application. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0041] The features, principles and other aspects of the present application are described in detail below.

[0042] An optical imaging lens according to an exemplary embodiment of the present application may include seven lenses having optical power: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. These seven lenses are arranged sequentially along the optical axis from the object side to the image side. Any two adjacent lenses among the first through third lenses and the fifth through seventh lenses may be spaced apart by a distance.

[0043] In an exemplary embodiment, the first lens may have positive power; the second lens may have negative power; the third lens may have positive or negative power; the fourth lens may have positive or negative power; the fifth lens may have negative power; the sixth lens may have positive power; and the seventh lens may have positive power. The third lens and the fourth lens form a cemented lens, the refractive index of the third lens is greater than that of the fourth lens, and the refractive index of the third lens is greater than 1.70. For example, the refractive index of the third lens is greater than 1.70 and less than 1.80. The first lens is set to positive optical power, which helps to achieve the large aperture characteristics of the optical imaging lens, facilitates the collection of large-angle light on the object side, avoids the generation of difficult-to-correct aberrations as much as possible, and reduces the pressure on the subsequent lenses to correct spherical aberration; the second lens is set to negative optical power, which can balance the aberrations by cooperating with the first lens, thereby obtaining good imaging quality; the third lens and the fourth lens are set to cemented lenses, and the refractive index of the third lens is greater than the refractive index of the fourth lens, which helps to reduce the chromatic aberration of the optical imaging system and improve the imaging quality; the fifth lens is set to negative optical power, and the sixth lens is set to positive optical power, which is beneficial to correcting the on-axis spherical aberration of the optical imaging lens; the seventh lens is set to negative optical power, which is beneficial to correcting the astigmatism and field curvature of the optical imaging lens.

[0044] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the following conditions: 7.5 < |R5 / R8| + f34 / f < 14.0, where R5 is the radius of curvature of the object-side surface of the third lens element, R8 is the radius of curvature of the image-side surface of the fourth lens element, f34 is the effective focal length of the cemented lens, and f is the total effective focal length of the optical imaging lens. The optical imaging lens satisfies the following conditions: 7.5 < |R5 / R8| + f34 / f < 14.0, effectively controlling the curvature of the third and fourth lenses, thereby reducing local astigmatism and improving imaging quality. It also effectively controls the effective focal length of the third lens element, facilitating correction of spherical aberration and improving imaging quality. More specifically, R5, R8, f34, and f may further satisfy the following conditions: 7.7 < |R5 / R8| + f34 / f < 13.5.

[0045] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the following conditions: 2.0 < (R3 + R4) / (R3 - R4) < 3.0, where R3 is the radius of curvature of the object-side surface of the second lens element, and R4 is the radius of curvature of the image-side surface of the second lens element. The optical imaging lens satisfies the following conditions: 2.0 < (R3 + R4) / (R3 - R4) < 3.0, which can reduce the curvature of the second lens element and reduce tolerance sensitivity, thereby improving the production yield of the optical imaging lens. More specifically, R3 and R4 may further satisfy the following conditions: 2.1 < (R3 + R4) / (R3 - R4) < 2.8.

[0046] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: -3.5<f5 / (R9-R10)<-2.5, wherein f5 is the effective focal length of the fifth lens, R9 is the radius of curvature of the object side surface of the fifth lens, and R10 is the radius of curvature of the image side surface of the fifth lens. The optical imaging lens satisfies -3.5<f5 / (R9-R10)<-2.5, which can effectively control the shape of the fifth lens, helps to balance the aberrations generated by the first lens to the fifth lens, and helps to correct the field curvature of different fields of view, thereby improving imaging quality. More specifically, f5, R9, and R10 may further satisfy: -3.4<f5 / (R9-R10)<-2.5.

[0047] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the following conditions: 1.0 < (CT3 + CT4) / T23 < 2.0, where CT3 is the center thickness of the third lens on the optical axis, CT4 is the center thickness of the fourth lens on the optical axis, and T23 is the distance between the second and third lenses on the optical axis. The optical imaging lens satisfies the following conditions: 1.0 < (CT3 + CT4) / T23 < 2.0. This reduces the overall length of the optical imaging lens while ensuring the processability of the third and fourth lenses, thereby facilitating the realization of an ultra-thin optical imaging lens. More specifically, CT3, CT4, and T23 may further satisfy the following conditions: 1.5 < (CT3 + CT4) / T23 < 1.9.

[0048] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the following condition: -45.0 < f1 / CT1 + f2 / CT2 < -22.0, where f1 is the effective focal length of the first lens, CT1 is the center thickness of the first lens along the optical axis, f2 is the effective focal length of the second lens, and CT2 is the center thickness of the second lens along the optical axis. This condition effectively controls the optical power of the first and second lenses, reduces the tolerance sensitivity of the second lens, and improves manufacturing yield.

[0049] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: -6.5<f5 / (T45+CT5+ET5)<-4.5, wherein f5 is the effective focal length of the fifth lens, T45 is the separation distance between the fourth lens and the fifth lens on the optical axis, CT5 is the center thickness of the fifth lens on the optical axis, and ET5 is the edge thickness of the fifth lens. The optical imaging lens satisfies -6.5<f5 / (T45+CT5+ET5)<-4.5, which can reasonably distribute the focal length of the fifth lens and help reduce the axial chromatic aberration of the optical imaging lens. It can also reasonably control the center thickness and edge thickness of the fifth lens, which helps to improve the processing and molding characteristics of the fifth lens. More specifically, f5, T45, CT5 and ET5 can further satisfy: -6.3<f5 / (T45+CT5+ET5)<-4.7.

[0050] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the following conditions: 1.0≤R12×SAG62 / (R11×SAG61)<47.0, wherein R12 is the radius of curvature of the image side surface of the sixth lens, SAG62 is the distance from the intersection of the image side surface of the sixth lens and the optical axis to the vertex of the effective radius of the image side surface of the sixth lens on the optical axis, R11 is the radius of curvature of the object side surface of the sixth lens, and SAG61 is the distance from the intersection of the object side surface of the sixth lens and the optical axis to the vertex of the effective radius of the object side surface of the sixth lens on the optical axis. The optical imaging lens satisfies 1.0≤R12×SAG62 / (R11×SAG61)<47.0, which can control the distortion of the optical imaging lens within a reasonable range and reduce the image curvature caused by distortion. It can also effectively control the ghost image produced by the sixth lens and reduce the impact of the ghost image on the imaging quality.

[0051] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the following relationship: 6.5 < |R14×SAG72 / (R13×SAG71)| < 15.5, where R14 is the radius of curvature of the image-side surface of the seventh lens element, SAG72 is the distance on the optical axis from the intersection of the image-side surface of the seventh lens element and the optical axis to the vertex of the effective radius of the image-side surface of the seventh lens element, R13 is the radius of curvature of the object-side surface of the seventh lens element, and SAG71 is the distance on the optical axis from the intersection of the object-side surface of the seventh lens element and the optical axis to the vertex of the effective radius of the object-side surface of the seventh lens element. The optical imaging lens satisfies the following relationship: 6.5 < |R14×SAG72 / (R13×SAG71)| < 15.5, which can effectively control the curvature of the seventh lens element, help reduce ghost images produced by the seventh lens element, and ensure the clarity of the image.

[0052] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 3.0<f6 / (T56+CT6+ET6)<4.0, wherein f6 is the effective focal length of the sixth lens, T56 is the distance between the fifth lens and the sixth lens on the optical axis, CT6 is the center thickness of the sixth lens on the optical axis, and ET6 is the edge thickness of the sixth lens. The optical imaging lens satisfies 3.0<f6 / (T56+CT6+ET6)<4.0, which can effectively control the shape of the sixth lens and ensure the processing and molding characteristics of the sixth lens. It also helps to reduce the off-axis aberration of the optical imaging lens and improve the imaging quality. More specifically, f6, T56, CT6 and ET6 can further satisfy: 3.2<f6 / (T56+CT6+ET6)<3.9.

[0053] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: -3.0<f7 / (T67+CT7+ET7)<-1.5, wherein f7 is the effective focal length of the seventh lens, T67 is the distance between the sixth lens and the seventh lens on the optical axis, CT7 is the center thickness of the seventh lens on the optical axis, and ET7 is the edge thickness of the seventh lens. The optical imaging lens satisfies -3.0<f7 / (T67+CT7+ET7)<-1.5, which can effectively control the shape of the seventh lens and ensure the processing and molding characteristics of the seventh lens. It also helps to reduce the angle between the main light and the imaging plane, and improve the matching of the lens and the photosensitive chip. More specifically, f7, T67, CT7 and ET7 can further satisfy: -2.7<f7 / (T67+CT7+ET7)<-1.6.

[0054] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the following condition: 6.5<(R2 / R1+TAN(Semi-FOV)×Fno<7.5), where R2 is the radius of curvature of the image-side surface of the first lens element, R1 is the radius of curvature of the object-side surface of the first lens element, Semi-FOV is half of the maximum field of view of the optical imaging lens, and Fno is the aperture value of the optical imaging lens. The optical imaging lens satisfying the condition 6.5<(R2 / R1+TAN(Semi-FOV)×Fno<7.5 helps achieve a large aperture characteristic of the optical imaging lens, ensures that the optical imaging lens has sufficient light input, and thus helps improve the brightness of the imaging surface.

[0055] In an exemplary embodiment, the optical imaging lens according to the present application further includes an aperture stop disposed between the object side and the first lens element. Optionally, the optical imaging lens may further include a filter for correcting chromatic aberration and / or a protective glass for protecting the photosensitive element located on the imaging surface.

[0056] In an exemplary embodiment, at least one of the mirror surfaces of each lens is an aspherical mirror surface, that is, at least one of the mirror surfaces from the object side surface of the first lens to the image side surface of the seventh lens is an aspherical mirror 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 with a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has a better curvature radius characteristic, with 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, at least one of the object side surface and the image side surface of each lens in the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens is an aspherical mirror surface. Optionally, the object side surface and the image side surface of each lens in the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens are all aspherical mirror surfaces.

[0057] However, those skilled in the art will appreciate that the number of lenses comprising the optical imaging lens can be varied to achieve the various results and advantages described herein without departing from the claimed technical solutions. For example, while the embodiments describe seven lenses as an example, the optical imaging lens is not limited to including seven lenses. If desired, the optical imaging lens may also include other numbers of lenses.

[0058] Specific embodiments of the optical imaging lens applicable to the above-mentioned embodiments will be further described below with reference to the accompanying drawings.

[0059] Example 1

[0060] The following reference Figures 1 to 2D The optical imaging lens according to Example 1 of the present application is described. Figure 1 The optical imaging lens of Example 1 is shown.

[0061] like Figure 1 As shown, the optical imaging lens includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8 and an imaging surface S17.

[0062] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has a concave object-side surface S5 and a concave image-side surface S6. The fourth lens E4 has a convex object-side surface S7 and a convex image-side surface S8. The third lens E3 and the fourth lens E4 form a cemented lens. The fifth lens E5 has negative optical power, with a convex object-side surface S9 and a concave image-side surface S10. The sixth lens E6 has positive optical power, with a convex object-side surface S11 and a concave image-side surface S12. The seventh lens E7 has negative optical power, with a concave object-side surface S13 and a convex image-side surface S14. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from an object passes through surfaces S1 to S16 in sequence and is ultimately imaged on imaging surface S17.

[0063] Table 1 shows the basic parameters of the optical imaging lens of Example 1, wherein the units of curvature radius, thickness / distance, and focal length are all millimeters (mm).

[0064]

[0065]

[0066] Table 1

[0067] In Example 1, the object-side surface and the image-side surface of any lens among the first lens E1 to the seventh lens E7 are both aspherical surfaces. The surface shape x of each aspherical lens can be defined by, but is not limited to, the following aspherical surface formula:

[0068]

[0069] Where x is the distance vector from the vertex of the aspheric surface 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 radius of curvature R in Table 1 above); k is the conic coefficient; Ai is the correction coefficient for the i-th order of the aspheric surface. Tables 2-1 and 2-2 below list the higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28, and A30 that can be used for each aspheric mirror surface S1 to S14 in Example 1.

[0070] Face number A4 A6 A8 A10 A12 A14 A16 S1 -3.1230E-03 -2.6519E-03 -1.1284E-03 -2.6363E-04 -7.2052E-05 5.2790E-06 -5.7413E-06 S2 -3.3262E-02 3.0350E-03 -9.8524E-04 1.2781E-04 2.3565E-05 -1.7093E-05 -1.4856E-06 S3 -6.1990E-03 1.2030E-02 -1.7997E-04 5.5976E-04 6.4537E-05 -2.1150E-05 7.4698E-06 S4 2.1170E-02 7.8422E-03 5.0737E-04 5.6116E-04 1.5725E-04 2.5850E-05 1.4204E-05 S5 -9.7137E-02 -4.1803E-03 2.6384E-04 7.2213E-04 2.7297E-04 1.2659E-04 2.6463E-05 S6 -1.0379E-01 1.0456E-02 3.6804E-03 1.9845E-03 4.3311E-04 1.2283E-04 5.2369E-05 S7 -1.0379E-01 1.0456E-02 3.6804E-03 1.9845E-03 4.3311E-04 1.2283E-04 5.2369E-05 S8 -2.1109E-01 -5.6949E-03 3.8097E-03 2.3929E-03 9.2907E-04 3.7231E-04 1.1390E-04 S9 -1.0293E+00 3.8377E-02 -1.2960E-02 1.6739E-02 -5.2319E-03 1.1211E-03 -3.8621E-04 S10 -2.1848E+00 4.1599E-01 -7.9800E-02 2.3259E-02 -2.2670E-02 8.5412E-03 -2.6804E-04 S11 -3.3069E+00 4.2764E-01 1.0144E-01 -1.4537E-02 -3.2494E-02 1.1276E-02 -4.8834E-04 S12 -7.0922E-01 -2.5837E-01 2.1691E-01 -7.9319E-02 2.7799E-02 2.4705E-03 1.6228E-04 S13 3.2261E+00 -3.4296E-01 7.0178E-03 2.2550E-02 -1.0250E-02 -1.9455E-03 1.5389E-03 S14 -1.1469E+00 2.5006E-01 2.4815E-02 -2.6804E-02 1.5115E-02 -8.7436E-03 -4.1919E-03

[0071] Table 2-1

[0072] Face number A18 A20 A22 A24 A26 A28 A30 S1 2.8802E-06 -3.7913E-06 2.5881E-06 -2.0713E-06 -1.7747E-07 1.1846E-06 0.0000E+00 S2 -7.4311E-06 -1.0777E-06 -1.7514E-06 6.8180E-07 8.0801E-07 1.8479E-07 0.0000E+00 S3 -6.2605E-06 5.2733E-06 -1.3083E-06 1.7009E-07 -4.8593E-06 1.1974E-06 0.0000E+00 S4 -9.8176E-06 -2.8459E-06 -7.8279E-06 -2.5946E-06 5.9598E-07 1.6544E-07 0.0000E+00 S5 1.5628E-05 -2.2795E-06 1.4616E-06 -3.4111E-06 3.6875E-06 1.9020E-06 0.0000E+00 S6 3.9205E-05 8.8020E-06 8.7369E-06 -4.3785E-07 -5.0246E-08 4.6571E-07 0.0000E+00 S7 3.9205E-05 8.8020E-06 8.7369E-06 -4.3785E-07 -5.0246E-08 4.6571E-07 0.0000E+00 S8 -5.8700E-06 1.1175E-06 -2.9943E-05 6.0031E-06 -1.6335E-05 2.0059E-06 0.0000E+00 S9 5.5150E-04 -3.3465E-04 -5.0055E-05 -6.9677E-05 1.9338E-05 -1.4173E-05 5.4709E-05 S10 4.0965E-04 -1.3178E-03 4.4991E-04 1.2278E-04 -1.8536E-05 -4.4174E-05 1.1937E-05 S11 1.3438E-03 -9.1246E-04 -9.3100E-05 8.7361E-05 7.2218E-05 -3.7416E-05 3.0440E-06 S12 2.4440E-05 -3.9119E-04 -3.6471E-04 4.8075E-04 -2.8131E-04 7.5249E-06 1.2166E-05 S13 6.9447E-04 3.3034E-04 -2.4186E-03 3.1073E-03 -2.2634E-03 1.0013E-03 -2.4075E-04 S14 2.2602E-04 4.3448E-03 -3.8757E-03 2.5623E-03 -1.3172E-03 5.6314E-04 -2.2311E-04

[0073] Table 2-2

[0074] Figure 2A The axial chromatic aberration curve of the optical imaging lens of Example 1 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the optical imaging lens. Figure 2B The astigmatism curve of the optical imaging lens of Example 1 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 2C The distortion curve of the imaging lens of Example 1 is shown, which represents the distortion magnitude values corresponding to different image heights. Figure 2D The chromatic aberration curve of the optical imaging lens of Example 1 is shown, which represents the deviation of different image heights of light passing through the optical imaging lens on the imaging surface. Figures 2A to 2D It can be seen that the optical imaging lens provided in Example 1 can achieve good imaging quality.

[0075] Example 2

[0076] The following reference Figures 3 to 4D The optical imaging lens according to Example 2 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Example 1 will be omitted. Figure 3 The optical imaging lens of Example 2 is shown.

[0077] like Figure 3As shown, the aperture STO, the first lens E1, the second lens E2, the third lens E3, the fourth lens E4, the fifth lens E5, the sixth lens E6, the seventh lens E7, the filter E8 and the imaging surface S17.

[0078] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has a concave object-side surface S5 and a concave image-side surface S6. The fourth lens E4 has a convex object-side surface S7 and a convex image-side surface S8. The third lens E3 and the fourth lens E4 form a cemented lens. The fifth lens E5 has negative optical power, with a convex object-side surface S9 and a concave image-side surface S10. The sixth lens E6 has positive optical power, with a convex object-side surface S11 and a concave image-side surface S12. The seventh lens E7 has negative optical power, with a concave object-side surface S13 and a convex image-side surface S14. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from an object passes through surfaces S1 to S16 in sequence and is ultimately imaged on imaging surface S17.

[0079] Table 3 shows the basic parameters of the optical imaging lens of Example 2. The units of curvature radius, thickness / distance, and focal length are all in millimeters (mm). Tables 4-1 and 4-2 show the high-order coefficients of the various aspherical mirror surfaces that can be used in Example 2. The surface shapes of the various aspherical surfaces can be defined by formula (1) given in Example 1 above.

[0080]

[0081] Table 3

[0082]

[0083]

[0084] Table 4-1

[0085] Face number A18 A20 A22 A24 A26 A28 A30 S1 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 2.6433E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S8 -2.5696E-04 1.7575E-04 -1.3469E-04 1.0111E-04 -6.7053E-05 5.7101E-05 0.0000E+00 S9 9.2873E-04 -1.8318E-04 1.6838E-04 -2.7728E-05 1.0217E-04 -1.7279E-05 5.3197E-05 S10 2.0930E-03 -1.6212E-03 4.0484E-04 -5.2808E-05 1.1945E-04 -8.9714E-05 5.8448E-06 S11 3.3241E-03 -2.1462E-03 8.5468E-04 -3.0151E-05 -2.3808E-04 -1.1829E-04 1.9327E-04 S12 2.5083E-03 -7.7083E-04 5.5455E-04 -2.2766E-04 -4.7875E-04 3.4484E-04 -1.4138E-04 S13 -3.9065E-03 3.5323E-03 -4.5872E-03 3.0439E-03 -2.3772E-03 9.4958E-04 -4.0421E-04 S14 -2.0573E-02 6.1581E-03 -1.1343E-02 4.7248E-03 -4.2792E-03 3.4549E-03 7.2026E-04

[0086] Table 4-2

[0087] Figure 4A The axial chromatic aberration curve of the optical imaging lens of Example 2 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the optical imaging lens. Figure 4B The astigmatism curve of the optical imaging lens of Example 2 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 4C The distortion curve of the imaging lens of Example 2 is shown, which represents the distortion magnitude values corresponding to different image heights. Figure 4DThe chromatic aberration curve of the optical imaging lens of Example 2 is shown, which represents the deviation of different image heights of light passing through the optical imaging lens on the imaging surface. Figures 4A to 4D It can be seen that the optical imaging lens provided in Example 2 can achieve good imaging quality.

[0088] Example 3

[0089] The following reference Figures 5 to 6D The optical imaging lens according to Example 3 of the present application is described. Figure 5 The optical imaging lens of Example 3 is shown.

[0090] like Figure 5 As shown, the aperture STO, the first lens E1, the second lens E2, the third lens E3, the fourth lens E4, the fifth lens E5, the sixth lens E6, the seventh lens E7, the filter E8 and the imaging surface S17.

[0091] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has a concave object-side surface S5 and a concave image-side surface S6. The fourth lens E4 has a convex object-side surface S7 and a convex image-side surface S8. The third lens E3 and the fourth lens E4 form a cemented lens. The fifth lens E5 has negative optical power, with a convex object-side surface S9 and a concave image-side surface S10. The sixth lens E6 has positive optical power, with a convex object-side surface S11 and a concave image-side surface S12. The seventh lens E7 has negative optical power, with a concave object-side surface S13 and a concave image-side surface S14. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from an object passes through surfaces S1 to S16 in sequence and is ultimately imaged on an imaging surface S17.

[0092] Table 5 shows the basic parameters of the optical imaging lens of Example 3. The units of curvature radius, thickness / distance, and focal length are all in millimeters (mm). Tables 6-1 and 6-2 show the high-order coefficients of the various aspherical mirror surfaces that can be used in Example 3. The surface shapes of the various aspherical surfaces can be defined by formula (1) given in Example 1 above.

[0093]

[0094]

[0095] Table 5

[0096] Face number A4 A6 A8 A10 A12 A14 A16 S1 1.1520E-03 -8.8917E-04 -2.5864E-04 -1.0635E-04 0.0000E+00 0.0000E+00 0.0000E+00 S2 -2.2397E-02 4.5992E-03 -6.0094E-04 5.1178E-05 4.7335E-06 -2.8177E-05 0.0000E+00 S3 -1.0858E-02 9.4883E-03 -5.6535E-04 2.3136E-04 -6.8561E-06 -1.8034E-05 9.0035E-07 S4 1.5671E-02 6.1925E-03 2.4524E-04 2.8847E-04 7.0584E-05 0.0000E+00 0.0000E+00 S5 -8.7768E-02 -4.1734E-03 4.4296E-04 6.9859E-04 1.6712E-04 1.1806E-04 -2.5034E-06 S6 -6.4424E-02 5.0582E-03 9.5973E-03 2.5120E-03 4.9679E-04 0.0000E+00 0.0000E+00 S7 -6.4424E-02 5.0582E-03 9.5973E-03 2.5120E-03 4.9679E-04 0.0000E+00 0.0000E+00 S8 -1.6476E-01 -1.1010E-02 3.9787E-03 -2.5239E-04 1.1840E-03 -3.4622E-04 3.8721E-04 S9 -8.2172E-01 3.0394E-02 -1.4430E-02 1.4826E-02 -4.4208E-03 1.0951E-03 -9.6847E-04 S10 -1.8565E+00 3.3309E-01 -6.2598E-02 2.6302E-02 -2.0722E-02 6.1367E-03 -1.1600E-03 S11 -2.7998E+00 2.8069E-01 5.7712E-02 2.6214E-02 -3.3520E-02 1.0415E-02 -4.1160E-03 S12 -5.1391E-01 -2.3082E-01 1.6039E-01 -5.5486E-02 1.0071E-02 7.7798E-03 -4.0213E-03 S13 2.4397E+00 -2.2386E-01 -5.6652E-03 1.3098E-02 -9.7714E-04 -3.5875E-03 1.3947E-03 S14 -1.5876E+00 1.7149E-01 2.7453E-02 -2.7695E-02 5.6872E-03 -3.5411E-03 2.7350E-03

[0097] Table 6-1

[0098] Face number A18 A20 A22 A24 A26 A28 A30 S1 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 1.7211E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S8 -2.2625E-04 1.7712E-04 -1.2641E-04 9.9359E-05 -6.1870E-05 5.5911E-05 0.0000E+00 S9 8.1517E-04 -2.2054E-04 1.4834E-04 -9.2651E-05 8.2517E-05 -5.5588E-05 4.2528E-05 S10 2.0276E-03 -1.4071E-03 3.2871E-04 -1.0703E-04 1.3983E-04 -9.1222E-05 3.2102E-05 S11 3.3203E-03 -1.9637E-03 1.0924E-03 -3.8512E-04 -3.2659E-04 -8.1375E-05 2.7966E-04 S12 2.2435E-03 -1.4649E-03 1.0105E-03 -3.6587E-04 -4.4956E-05 2.4162E-04 -1.9200E-04 S13 -1.9698E-03 2.9981E-03 -2.1033E-03 6.7068E-04 -1.1170E-05 -4.8962E-05 7.6379E-07 S14 -6.3386E-03 2.5465E-03 -2.1424E-03 2.2189E-03 -6.1344E-04 -3.1357E-06 4.0549E-05

[0099] Table 6-2

[0100] Figure 6A The axial chromatic aberration curve of the optical imaging lens of Example 3 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the optical imaging lens. Figure 6B The astigmatism curve of the optical imaging lens of Example 3 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 6C The distortion curve of the imaging lens of Example 3 is shown, which represents the distortion magnitude values corresponding to different image heights. Figure 6D The chromatic aberration curve of the optical imaging lens of Example 3 is shown, which represents the deviation of different image heights of light passing through the optical imaging lens on the imaging surface. 6A to 6D It can be seen that the optical imaging lens provided in Example 3 can achieve good imaging quality.

[0101] Example 4

[0102] The following reference Figures 7 to 8D An optical imaging lens according to Example 4 of the present application is described. Figure 7 An optical imaging lens according to Example 4 is shown.

[0103] like Figure 7 As shown, the aperture STO, the first lens E1, the second lens E2, the third lens E3, the fourth lens E4, the fifth lens E5, the sixth lens E6, the seventh lens E7, the filter E8 and the imaging surface S17.

[0104] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens E4 has a convex object-side surface S7 and a convex image-side surface S8. The third lens E3 and the fourth lens E4 form a cemented lens. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being concave and its image-side surface S14 being convex. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from an object sequentially passes through surfaces S1 to S16 and is ultimately imaged on an imaging surface S17.

[0105] Table 7 shows the basic parameters of the optical imaging lens of Example 4. The units of curvature radius, thickness / distance, and focal length are all in millimeters (mm). Tables 8-1 and 8-2 show the high-order coefficients of the various aspherical mirror surfaces that can be used in Example 4. The surface shapes of the various aspherical surfaces can be defined by formula (1) given in Example 1 above.

[0106]

[0107] Table 7

[0108]

[0109]

[0110] Table 8-1

[0111] Face number A18 A20 A22 A24 A26 A28 A30 S1 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 2.2973E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S8 -2.2791E-04 2.1918E-04 -1.1760E-04 1.3315E-04 -5.3784E-05 7.4741E-05 0.0000E+00 S9 1.1271E-03 -1.8845E-04 1.7764E-04 -5.6039E-05 7.6971E-05 -1.8784E-05 3.9555E-05 S10 2.3887E-03 -1.9736E-03 5.6658E-04 -1.4001E-04 1.7913E-04 -1.0796E-04 1.1686E-05 S11 4.7606E-03 -3.3134E-03 1.1260E-03 1.2068E-04 -1.1817E-04 -2.6136E-04 1.4888E-04 S12 4.4182E-03 -2.4767E-03 1.5988E-03 -3.7991E-04 -2.5239E-04 4.8241E-04 -2.4349E-04 S13 -1.0536E-03 2.3513E-03 -4.0740E-03 2.6624E-03 -2.3880E-03 1.1168E-03 -6.0924E-04 S14 -1.2200E-02 1.0543E-02 -7.6256E-03 4.9132E-03 -4.6964E-03 -1.1394E-03 -1.2704E-03

[0112] Table 8-2

[0113] Figure 8A The axial chromatic aberration curve of the optical imaging lens of Example 4 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the optical imaging lens. Figure 8B The astigmatism curve of the optical imaging lens of Example 4 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 8C The distortion curve of the imaging lens of Example 4 is shown, which represents the distortion magnitude values corresponding to different image heights. Figure 8D The chromatic aberration curve of the optical imaging lens of Example 4 is shown, which represents the deviation of different image heights of light passing through the optical imaging lens on the imaging surface. Figures 8A to 8D It can be seen that the optical imaging lens provided in Example 4 can achieve good imaging quality.

[0114] Example 5

[0115] The following reference Figures 9 to 10D The optical imaging lens according to Example 5 of the present application is described. Figure 9 An optical imaging lens according to Example 5 is shown.

[0116] like Figure 9 As shown, the aperture STO, the first lens E1, the second lens E2, the third lens E3, the fourth lens E4, the fifth lens E5, the sixth lens E6, the seventh lens E7, the filter E8 and the imaging surface S17.

[0117] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has a concave object-side surface S5 and a convex image-side surface S6. The fourth lens E4 has a concave object-side surface S7 and a convex image-side surface S8. The third and fourth lenses E3 and E4 form a cemented lens. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being concave and its image-side surface S14 being convex. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from an object sequentially passes through surfaces S1 to S16 and is ultimately imaged on imaging surface S17.

[0118] Table 9 shows the basic parameters of the optical imaging lens of Example 5. The units for the radius of curvature, thickness / distance, and focal length are all in millimeters (mm). Tables 10-1 and 10-2 show the high-order coefficients of the various aspherical mirror surfaces that can be used in Example 5. The surface shapes of the various aspherical surfaces can be defined by formula (1) given in Example 1 above.

[0119]

[0120]

[0121] Table 9

[0122] Face number A4 A6 A8 A10 A12 A14 A16 S1 5.9664E-05 -1.1298E-03 -3.1477E-04 -1.1607E-04 0.0000E+00 0.0000E+00 0.0000E+00 S2 -2.1357E-02 4.4565E-03 -7.4419E-04 1.2117E-04 -1.1878E-05 -1.9892E-05 0.0000E+00 S3 -1.1338E-02 9.5695E-03 -6.8649E-04 3.1849E-04 -3.3170E-05 -1.5163E-06 -1.0321E-05 S4 1.5007E-02 6.6412E-03 3.3086E-04 3.1017E-04 7.6940E-05 0.0000E+00 0.0000E+00 S5 -8.9033E-02 -3.4507E-03 4.1430E-04 8.1137E-04 2.0411E-04 1.5436E-04 4.2689E-06 S6 -6.8361E-02 8.1186E-03 9.7199E-03 2.5549E-03 6.6900E-04 0.0000E+00 0.0000E+00 S7 -6.8361E-02 8.1186E-03 9.7199E-03 2.5549E-03 6.6900E-04 0.0000E+00 0.0000E+00 S8 -1.5889E-01 -1.2229E-02 4.2928E-03 -3.1945E-04 1.2935E-03 -3.9909E-04 4.2153E-04 S9 -8.4343E-01 2.5527E-02 -1.5438E-02 1.4937E-02 -3.8832E-03 1.0018E-03 -1.2091E-03 S10 -1.8485E+00 3.3171E-01 -6.2964E-02 2.5936E-02 -2.0706E-02 6.7483E-03 -1.6113E-03 S11 -2.9062E+00 3.0109E-01 5.1263E-02 2.9918E-02 -3.5946E-02 1.2206E-02 -5.3573E-03 S12 -9.2393E-01 -1.4360E-01 1.4279E-01 -4.9742E-02 7.5198E-03 9.7426E-03 -5.5410E-03 S13 2.4768E+00 -2.0819E-01 -2.3639E-03 6.3725E-03 3.4513E-04 -1.8954E-03 2.8367E-03 S14 -1.5009E+00 1.3759E-01 1.1011E-01 -1.0962E-01 1.7583E-02 -2.0691E-02 1.3321E-02

[0123] Table 10-1

[0124] Face number A18 A20 A22 A24 A26 A28 A30 S1 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 1.8799E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S8 -2.3638E-04 1.7680E-04 -1.3892E-04 1.0433E-04 -4.9849E-05 7.3201E-05 0.0000E+00 S9 6.2379E-04 -4.1335E-04 8.9072E-05 -9.3275E-05 8.6414E-05 -2.2203E-05 7.1199E-05 S10 2.1696E-03 -1.6013E-03 5.6608E-04 -7.3244E-05 1.8898E-04 -8.1629E-05 4.6565E-05 S11 3.8023E-03 -3.1173E-03 1.3138E-03 3.9271E-04 2.0833E-05 -3.1003E-04 1.8581E-04 S12 3.5449E-03 -2.4243E-03 1.4044E-03 -5.5292E-04 -2.2848E-04 3.8046E-04 -5.7430E-05 S13 -2.6656E-03 3.6536E-03 -3.6291E-03 2.5000E-03 -1.8116E-03 6.0643E-04 -3.3567E-04 S14 -1.1073E-02 7.8064E-03 -7.4661E-03 5.6712E-03 -2.2114E-03 3.2676E-03 9.4661E-04

[0125] Table 10-2

[0126] Figure 10A The axial chromatic aberration curve of the optical imaging lens of Example 5 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the optical imaging lens. Figure 10B The astigmatism curve of the optical imaging lens of Example 5 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 10C The distortion curve of the imaging lens of Example 5 is shown, which represents the distortion magnitude values corresponding to different image heights. Figure 10D The chromatic aberration curve of the optical imaging lens of Example 5 is shown, which represents the deviation of different image heights of light passing through the optical imaging lens on the imaging surface. 10A to 10D It can be seen that the optical imaging lens provided in Example 5 can achieve good imaging quality.

[0127] Example 6

[0128] The following reference Figures 11 to 12D The optical imaging lens according to Example 6 of the present application is described. Figure 11 An optical imaging lens according to Example 6 is shown.

[0129] like Figure 11 As shown, the aperture STO, the first lens E1, the second lens E2, the third lens E3, the fourth lens E4, the fifth lens E5, the sixth lens E6, the seventh lens E7, the filter E8 and the imaging surface S17.

[0130] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has a concave object-side surface S5 and a convex image-side surface S6. The fourth lens E4 has a concave object-side surface S7 and a convex image-side surface S8. The third and fourth lenses E3 and E4 form a cemented lens. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being concave and its image-side surface S14 being convex. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from an object sequentially passes through surfaces S1 to S16 and is ultimately imaged on imaging surface S17.

[0131] Table 11 shows the basic parameters of the optical imaging lens of Example 6. The units for the radius of curvature, thickness / distance, and focal length are all in millimeters (mm). Tables 12-1 and 12-2 show the higher-order coefficients of the various aspherical mirror surfaces that can be used in Example 6. The surface shapes of the various aspherical surfaces can be defined by Formula (1) given in Example 1 above.

[0132]

[0133] Table 11

[0134]

[0135]

[0136] Table 12-1

[0137] Face number A18 A20 A22 A24 A26 A28 A30 S1 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 2.2094E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S8 -2.7211E-04 2.0211E-04 -1.5029E-04 1.1257E-04 -7.5750E-05 6.1679E-05 0.0000E+00 S9 9.4402E-04 -2.9942E-04 2.3249E-04 -2.7519E-05 1.8236E-04 -2.3851E-06 9.4139E-05 S10 1.9580E-03 -1.6519E-03 4.2646E-04 -3.2579E-05 1.3559E-04 -1.0483E-04 7.9041E-06 S11 3.2581E-03 -2.4979E-03 8.5634E-04 3.7266E-04 7.7504E-05 -2.3440E-04 1.3484E-04 S12 2.8513E-03 -1.8496E-03 6.4840E-04 -9.8482E-05 -2.8130E-04 4.1384E-04 -7.2007E-05 S13 -3.2685E-03 4.6766E-03 -4.2003E-03 2.7727E-03 -1.6490E-03 7.7545E-04 -2.7285E-04 S14 -1.2356E-02 9.9970E-03 -5.8320E-03 3.6043E-03 -3.0084E-03 -7.0392E-05 -2.3151E-04

[0138] Table 12-2

[0139] Figure 12AThe axial chromatic aberration curve of the optical imaging lens of Example 6 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the optical imaging lens. Figure 12B The astigmatism curve of the optical imaging lens of Example 6 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 12C The distortion curve of the imaging lens of Example 6 is shown, which represents the distortion magnitude values corresponding to different image heights. Figure 12D The chromatic aberration curve of the optical imaging lens of Example 6 is shown, which represents the deviation of different image heights of light passing through the optical imaging lens on the imaging surface. 12A to 12D It can be seen that the optical imaging lens provided in Example 6 can achieve good imaging quality.

[0140] Example 7

[0141] The following reference Figures 13 to 14D An optical imaging lens according to Example 7 of the present application is described. Figure 13 An optical imaging lens according to Example 7 is shown.

[0142] like Figure 13 As shown, the aperture STO, the first lens E1, the second lens E2, the third lens E3, the fourth lens E4, the fifth lens E5, the sixth lens E6, the seventh lens E7, the filter E8 and the imaging surface S17.

[0143] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has a concave object-side surface S5 and a convex image-side surface S6. The fourth lens E4 has a concave object-side surface S7 and a convex image-side surface S8. The third and fourth lenses E3 and E4 form a cemented lens. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being concave and its image-side surface S14 being convex. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from an object sequentially passes through surfaces S1 to S16 and is ultimately imaged on imaging surface S17.

[0144] Table 13 shows the basic parameters of the optical imaging lens of Example 7. The units of curvature radius, thickness / distance, and focal length are all in millimeters (mm). Tables 14-1 and 14-2 show the high-order coefficients of the various aspherical mirror surfaces that can be used in Example 7. The surface shapes of the various aspherical surfaces can be defined by formula (1) given in Example 1 above.

[0145]

[0146] Table 13

[0147] Face number A4 A6 A8 A10 A12 A14 A16 S1 4.1959E-03 -3.8500E-04 -3.9275E-04 -1.5448E-04 0.0000E+00 0.0000E+00 0.0000E+00 S2 -1.9636E-02 7.9482E-03 -8.6830E-04 3.9362E-04 -6.3188E-05 -1.0010E-04 0.0000E+00 S3 -1.3726E-02 1.1157E-02 -1.7752E-04 5.1771E-04 -2.7186E-05 -3.7601E-05 -6.9704E-06 S4 1.7475E-02 6.6246E-03 1.2678E-03 4.4053E-04 1.3686E-04 0.0000E+00 0.0000E+00 S5 -9.3612E-02 -4.8004E-03 3.3130E-04 8.3914E-04 8.3138E-05 1.1693E-04 -2.0183E-05 S6 -1.5474E-02 1.9230E-02 1.3345E-02 3.9606E-03 -1.2473E-03 0.0000E+00 0.0000E+00 S7 -1.5474E-02 1.9230E-02 1.3345E-02 3.9606E-03 -1.2473E-03 0.0000E+00 0.0000E+00 S8 -1.5605E-01 -1.3208E-02 7.5214E-03 -6.1719E-04 1.8065E-03 -5.5261E-04 5.6366E-04 S9 -8.6119E-01 2.5443E-02 -1.3402E-02 1.6647E-02 -7.3720E-03 1.9788E-03 -7.6301E-04 S10 -1.8829E+00 3.4444E-01 -6.7637E-02 2.4921E-02 -2.5400E-02 1.0228E-02 -1.7337E-03 S11 -3.1368E+00 3.5561E-01 3.1686E-02 4.4839E-02 -4.0188E-02 1.0212E-02 -5.4949E-03 S12 -1.1394E+00 -6.9027E-02 1.1542E-01 -4.5940E-02 9.4041E-03 9.3039E-03 -5.1284E-03 S13 2.5972E+00 -2.2133E-01 1.8261E-03 -1.0393E-03 1.3510E-02 -1.3946E-02 6.1708E-03 S14 -1.1509E+00 3.0445E-02 1.6150E-01 -7.8488E-02 8.9981E-03 -2.4456E-02 5.1736E-03

[0148] Table 14-1

[0149] Face number A18 A20 A22 A24 A26 A28 A30 S1 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 1.5953E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S8 -3.3722E-04 2.5571E-04 -1.8190E-04 1.3923E-04 -9.1552E-05 7.0690E-05 0.0000E+00 S9 1.8639E-03 1.1392E-04 6.3948E-04 9.7504E-05 3.6986E-04 5.6681E-05 1.6941E-04 S10 1.9270E-03 -1.9101E-03 4.8250E-04 -1.1042E-04 1.2238E-04 -1.7371E-04 -3.4085E-06 S11 4.8885E-03 -1.6591E-03 1.2278E-03 -1.1400E-03 -4.1037E-04 5.8574E-05 4.2765E-04 S12 1.8934E-03 -9.7771E-04 1.1551E-03 -5.8320E-04 3.5540E-04 1.3287E-04 -3.2263E-04 S13 -2.6594E-03 2.2463E-03 -1.8083E-03 6.9726E-04 -2.0052E-04 7.0787E-05 -3.5379E-05 S14 -1.4340E-02 2.0413E-03 -5.6141E-03 8.7407E-04 -2.2742E-03 -9.6527E-04 -3.1268E-04

[0150] Table 14-2

[0151] Figure 14A The axial chromatic aberration curve of the optical imaging lens of Example 7 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the optical imaging lens. Figure 14B The astigmatism curve of the optical imaging lens of Example 7 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 14C The distortion curve of the imaging lens of Example 7 is shown, which represents the distortion magnitude values corresponding to different image heights. Figure 14D The chromatic aberration curve of the optical imaging lens of Example 7 is shown, which represents the deviation of different image heights of light passing through the optical imaging lens on the imaging surface. 14A to 14D It can be seen that the optical imaging lens provided in Example 7 can achieve good imaging quality.

[0152] Example 8

[0153] The following reference Figures 15 to 16D The optical imaging lens according to Example 8 of the present application is described. Figure 15 An optical imaging lens according to Example 8 is shown.

[0154] like Figure 15 As shown, the aperture STO, the first lens E1, the second lens E2, the third lens E3, the fourth lens E4, the fifth lens E5, the sixth lens E6, the seventh lens E7, the filter E8 and the imaging surface S17.

[0155] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has a concave object-side surface S5 and a concave image-side surface S6. The fourth lens E4 has a convex object-side surface S7 and a convex image-side surface S8. The third lens E3 and the fourth lens E4 form a cemented lens. The fifth lens E5 has negative optical power, with a convex object-side surface S9 and a concave image-side surface S10. The sixth lens E6 has positive optical power, with a convex object-side surface S11 and a concave image-side surface S12. The seventh lens E7 has negative optical power, with a concave object-side surface S13 and a convex image-side surface S14. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from an object passes through surfaces S1 to S16 in sequence and is ultimately imaged on imaging surface S17.

[0156] Table 15 shows the basic parameters of the optical imaging lens of Example 8. The units of curvature radius, thickness / distance, and focal length are all in millimeters (mm). Tables 16-1 and 16-2 show the high-order coefficients of the various aspherical mirror surfaces that can be used in Example 8. The surface shapes of the various aspherical surfaces can be defined by formula (1) given in Example 1 above.

[0157]

[0158] Table 15

[0159]

[0160]

[0161] Table 16-1

[0162] Face number A18 A20 A22 A24 A26 A28 A30 S1 1.6954E-05 8.7223E-06 5.8261E-06 3.1651E-06 1.4051E-06 3.5142E-08 0.0000E+00 S2 5.6296E-05 4.1463E-05 2.5018E-05 1.3906E-05 6.3517E-06 2.6690E-06 0.0000E+00 S3 -9.5586E-06 -8.7009E-06 -8.4222E-06 -6.4194E-06 -3.2377E-06 -1.2653E-06 0.0000E+00 S4 2.0722E-05 2.4361E-06 -3.2681E-06 -3.2132E-06 -1.6273E-06 -1.6982E-07 0.0000E+00 S5 5.0983E-05 7.3729E-06 2.7525E-06 -5.7046E-07 1.1969E-06 -1.7483E-07 0.0000E+00 S6 2.0593E-05 1.6845E-06 5.8021E-06 -3.7264E-07 -2.9459E-07 2.6856E-07 0.0000E+00 S7 2.0593E-05 1.6845E-06 5.8021E-06 -3.7264E-07 -2.9459E-07 2.6856E-07 0.0000E+00 S8 -2.9404E-04 -2.4120E-04 -1.3189E-04 -6.7905E-05 -2.2907E-05 -7.0201E-06 0.0000E+00 S9 4.5873E-04 1.3507E-04 8.0756E-04 6.6458E-04 4.0399E-04 1.7634E-04 5.5465E-05 S10 1.6871E-04 -4.8310E-05 1.7397E-03 1.1781E-04 1.1964E-04 1.4064E-04 1.5102E-04 S11 -2.9184E-03 -5.2155E-04 1.5274E-03 -1.9744E-04 -4.2568E-04 -3.0448E-04 1.3138E-04 S12 -2.4124E-03 -1.4067E-03 -5.0468E-04 2.1798E-04 -1.7487E-04 1.3642E-04 2.0588E-04 S13 -6.3902E-04 -1.0687E-03 -1.8388E-03 2.5763E-03 -2.6808E-03 1.2847E-03 -4.7186E-04 S14 2.7634E-03 3.4000E-03 -4.6268E-03 2.1565E-03 -1.6676E-03 5.4396E-04 -1.5668E-04

[0163] Table 16-2

[0164] Figure 16A The axial chromatic aberration curve of the optical imaging lens of Example 8 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the optical imaging lens. Figure 16B The astigmatism curve of the optical imaging lens of Example 8 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 16C The distortion curve of the imaging lens of Example 8 is shown, which represents the distortion magnitude values corresponding to different image heights. Figure 16D The chromatic aberration curve of the optical imaging lens of Example 8 is shown, which represents the deviation of different image heights of light passing through the optical imaging lens on the imaging surface. 16A to 16D It can be seen that the optical imaging lens provided in Example 8 can achieve good imaging quality.

[0165] In summary, Examples 1 to 8 satisfy the relationships shown in Tables 17-1 to 18-2, respectively. Wherein, f34 is the effective focal length of the cemented lens formed by the third lens and the fourth lens.

[0166] Example parameters Example 1 Example 2 Example 3 Example 4 f(mm) 5.43 4.58 4.53 4.53 f1(mm) 4.91 4.46 4.60 4.49 f2(mm) -13.83 -11.10 -12.14 -11.00 f34(mm) 53.01 21.93 23.02 17.79 f5(mm) -7.62 -7.59 -7.77 -7.31 f6(mm) 3.38 3.58 3.32 3.60 f7(mm) -3.60 -4.27 -3.38 -4.26 Semi-FOV(°) 43.8 42.6 43.5 43.0 Fno 2.05 1.90 1.90 1.90

[0167] Table 17-1

[0168]

[0169]

[0170] Table 17-2

[0171] Conditional formula / Example Example 1 Example 2 Example 3 Example 4 R2 / R1+TAN(Semi-FOV)×Fno 6.69 7.12 6.64 6.92 (R3+R4) / (R3-R4) 2.27 2.45 2.34 2.19 |R5 / R8|+f34 / f 12.14 11.30 13.33 11.74 f5 / (R9-R10) -2.69 -2.75 -2.83 -2.54 (CT3+CT4) / T23 1.74 1.66 1.80 1.78 f1 / CT1+f2 / CT2 -44.99 -28.30 -32.80 -27.35 f5 / (T45+CT5+ET5) -5.24 -5.24 -5.30 -4.93 R12×SAG62 / (R11×SAG61) 22.01 6.81 46.60 6.79 |R14×SAG72 / (R13×SAG71)| 13.05 8.84 6.82 7.83 f6 / (T56+CT6+ET6) 3.58 3.72 3.57 3.52 f7 / (T67+CT7+ET7) -1.92 -2.32 -1.74 -2.50

[0172] Table 18-1

[0173] Conditional formula / Example Example 5 Example 6 Example 7 Example 8 R2 / R1+TAN(Semi-FOV)×Fno 7.34 7.28 7.30 6.82 (R3+R4) / (R3-R4) 2.38 2.41 2.59 2.17 |R5 / R8|+f34 / f 12.10 12.66 7.60 12.14 f5 / (R9-R10) -2.85 -2.96 -3.25 -2.70 (CT3+CT4) / T23 1.71 1.69 1.75 1.75 f1 / CT1+f2 / CT2 -27.84 -26.85 -22.98 -44.36 f5 / (T45+CT5+ET5) -5.31 -5.42 -6.06 -5.24 R12×SAG62 / (R11×SAG61) 7.70 7.30 7.96 1.01 |R14×SAG72 / (R13×SAG71)| 14.86 15.23 14.22 13.09 f6 / (T56+CT6+ET6) 3.60 3.54 3.79 3.58 f7 / (T67+CT7+ET7) -2.25 -2.29 -1.99 -2.00

[0174] Table 18-2

[0175] The present application also provides an imaging device, wherein the electronic photosensitive element thereof may be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS). The imaging device may be a standalone imaging device such as a digital camera, or an imaging module integrated into a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens described above.

[0176] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the inventive concept. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. An optical imaging lens, characterized in that: Along the optical axis from the object side to the image side, they include: The first lens has positive refractive power, its object-side surface is convex and its image-side surface is concave; a second lens having negative optical power, the object-side surface of which is convex and the image-side surface of which is concave; a third lens having positive or negative optical power; a fourth lens element having positive refractive power and a convex image-side surface; a fifth lens element having negative optical power, whose object-side surface is convex and whose image-side surface is concave; a sixth lens element having positive optical power, whose object-side surface is convex and whose image-side surface is concave; a seventh lens element having negative optical power and a concave object-side surface; The optical imaging lens has seven lenses with optical power. The third lens and the fourth lens form a cemented lens, the refractive index of the third lens is greater than the refractive index of the fourth lens, and the refractive index of the third lens is greater than 1.70; The curvature radius R5 of the object side surface of the third lens, the curvature radius R8 of the image side surface of the fourth lens, the effective focal length f34 of the cemented lens, and the total effective focal length f of the optical imaging lens satisfy: 7.60≤ R5 / R8 +f34 / f≤13.

33.

2. The optical imaging lens according to claim 1, wherein: A curvature radius R3 of the object-side surface of the second lens and a curvature radius R4 of the image-side surface of the second lens satisfy: 2.17≤(R3+R4) / (R3-R4)≤2.

59.

3. The optical imaging lens according to claim 1, wherein: An effective focal length f5 of the fifth lens, a curvature radius R9 of the object-side surface of the fifth lens, and a curvature radius R10 of the image-side surface of the fifth lens satisfy: -3.25≤f5 / (R9-R10)<-2.

5.

4. The optical imaging lens according to claim 1, wherein: A center thickness CT3 of the third lens on the optical axis, a center thickness CT4 of the fourth lens on the optical axis, and a distance T23 between the second lens and the third lens on the optical axis satisfy: 1.66≤(CT3+CT4) / T23≤1.

80.

5. The optical imaging lens according to claim 1, wherein: The effective focal length f1 of the first lens, the center thickness CT1 of the first lens on the optical axis, the effective focal length f2 of the second lens, and the center thickness CT2 of the second lens on the optical axis satisfy: -45.0<f1 / CT1+f2 / CT2≤-22.

98.

6. The optical imaging lens according to claim 1, wherein: The effective focal length f5 of the fifth lens, the spacing T45 between the fourth lens and the fifth lens on the optical axis, the center thickness CT5 of the fifth lens on the optical axis, and the edge thickness ET5 of the fifth lens satisfy: -6.06≤f5 / (T45+CT5+ET5)≤-4.

93.

7. The optical imaging lens according to claim 1, wherein: The curvature radius R12 of the image side surface of the sixth lens, the distance SAG62 from the intersection of the image side surface of the sixth lens and the optical axis to the vertex of the effective radius of the image side surface of the sixth lens on the optical axis, the curvature radius R11 of the object side surface of the sixth lens, and the distance SAG61 from the intersection of the object side surface of the sixth lens and the optical axis to the vertex of the effective radius of the object side surface of the sixth lens on the optical axis satisfy: 1.0<R12×SAG62 / (R11×SAG61)≤46.

60.

8. The optical imaging lens according to claim 1, wherein: The curvature radius R14 of the image side surface of the seventh lens, the distance SAG72 from the intersection of the image side surface of the seventh lens and the optical axis to the effective radius vertex of the image side surface of the seventh lens on the optical axis, the curvature radius R13 of the object side surface of the seventh lens, and the distance SAG71 from the intersection of the object side surface of the seventh lens and the optical axis to the effective radius vertex of the object side surface of the seventh lens on the optical axis satisfy: 6.82≤ R14×SAG72 / (R13×SAG71) ≤15.

23.

9. The optical imaging lens according to claim 1, wherein: The effective focal length f6 of the sixth lens, the spacing T56 between the fifth lens and the sixth lens on the optical axis, the center thickness CT6 of the sixth lens on the optical axis, and the edge thickness ET6 of the sixth lens satisfy: 3.52≤f6 / (T56+CT6+ET6)≤3.

79.

10. The optical imaging lens according to claim 1, wherein: The effective focal length f7 of the seventh lens, the spacing T67 between the sixth lens and the seventh lens on the optical axis, the center thickness CT7 of the seventh lens on the optical axis, and the edge thickness ET7 of the seventh lens satisfy the following: -2.50≤f7 / (T67+CT7+ET7)≤-1.

74.

11. The optical imaging lens according to any one of claims 1 to 10, wherein: The curvature radius R2 of the image-side surface of the first lens, the curvature radius R1 of the object-side surface of the first lens, half the maximum field of view Semi-FOV of the optical imaging lens, and the aperture value Fno of the optical imaging lens satisfy the following conditions: 6.64≤(R2 / R1+TAN(Semi-FOV)×Fno≤7.34.

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