Optical imaging lens

Abstract

The present application discloses an optical imaging lens, wherein the optical imaging lens includes, in order from the object side to the image side along the optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens having optical power, a distance TTL from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis and a total effective focal length f of the optical imaging lens satisfy: TTL / f≤1.0; and an aperture value Fno of the optical imaging lens satisfies: 1.45≤Fno≤2.0.

Description

Technical Field

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

[0002] In recent years, with the development of science and technology, mobile phone lenses with high imaging quality have become more and more popular. As the thickness of mobile phones has become thinner, the total length of the imaging lens has been limited, which has increased the difficulty of designing mobile phone lenses.

[0003] At the same time, the performance improvement and pixel size reduction of the photosensitive elements commonly used in mobile phone imaging lenses, such as the charge coupled device (CCD) or complementary metal oxide semiconductor (CMOS), have put forward higher requirements on the corresponding optical imaging lenses.

[0004] Typically, telephoto lenses in imaging lenses usually improve imaging quality by increasing the number of lenses, but the increase in the number of lenses will inevitably affect the overall length of the lens. Therefore, how to strike a balance between lens miniaturization and imaging quality is currently a problem that needs to be solved in telephoto lenses. Summary of the invention

[0005] The present application provides an optical imaging lens, such as a telephoto lens, which can be applicable to portable electronic products and can at least solve or partially solve at least one of the above-mentioned shortcomings in the prior art.

[0006] One aspect of 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 optical power, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens.

[0007] In one embodiment, the distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis and the total effective focal length f of the optical imaging lens satisfy: TTL / f≤1.0.

[0008] In one embodiment, the aperture value Fno of the optical imaging lens satisfies: 1.45≤Fno≤2.0.

[0009] In one embodiment, the effective focal length f4 of the fourth lens, the effective focal length f7 of the seventh lens, and the effective focal length f1 of the first lens satisfy: -2.0<(f4+f7) / f1<-1.0.

[0010] In one embodiment, the effective focal length f3 of the third lens, the effective focal length f5 of the fifth lens, and the total effective focal length f of the optical imaging lens satisfy: 2.0<(f3+f5) / f<3.0.

[0011] In one embodiment, a curvature radius R5 of the object-side surface of the third lens and a curvature radius R1 of the object-side surface of the first lens satisfy: 0.5<R5 / R1<1.5.

[0012] In one embodiment, a curvature radius R2 of the image-side surface of the first lens and a curvature radius R3 of the object-side surface of the second lens satisfy: 1.0<R2 / R3<1.5.

[0013] In one embodiment, a curvature radius R4 of the image side surface of the second lens, a curvature radius R6 of the image side surface of the third lens, and a curvature radius R7 of the object side surface of the fourth lens satisfy: -4.5<(R4+R6) / R7<-0.5.

[0014] In one embodiment, a curvature radius R8 of the image-side surface of the fourth lens and a curvature radius R9 of the object-side surface of the fifth lens satisfy: 1.5<R9 / R8<3.5.

[0015] In one embodiment, a curvature radius R11 of the object-side surface of the sixth lens, a curvature radius R12 of the image-side surface of the sixth lens, and a curvature radius R13 of the object-side surface of the seventh lens satisfy: 2.5≤(R11+R13) / R12<8.0.

[0016] In one embodiment, the air interval T12 between the first lens and the second lens on the optical axis, the air interval T23 between the second lens and the third lens on the optical axis, and the air interval T34 between the third lens and the fourth lens on the optical axis satisfy: 3.5<T34 / (T12+T23)<15.

[0017] In one embodiment, an air interval T45 between the fourth lens and the fifth lens on the optical axis and an air interval T78 between the seventh lens and the eighth lens on the optical axis satisfy: 1.5<T78 / T45<2.5.

[0018] In one embodiment, an air interval T56 between the fifth lens and the sixth lens on the optical axis and an air interval T67 between the sixth lens and the seventh lens on the optical axis satisfy: 5.0≤T56 / T67<43.0.

[0019] In one embodiment, the center thickness CT1 of the first lens on the optical axis, the center thickness CT2 of the second lens on the optical axis, and the center thickness CT3 of the third lens on the optical axis satisfy: 1.0≤CT1 / (CT2+CT3)<1.5.

[0020] In one embodiment, the TV distortion TV of the optical imaging lens satisfies: |TV|≤2.5%.

[0021] In one embodiment, the third lens has positive refractive power, and its object-side surface is convex and its image-side surface is concave.

[0022] In one embodiment, the seventh lens element has negative optical power, and its object-side surface is concave, and its image-side surface is convex.

[0023] The optical imaging lens provided in the present application uses multiple lenses, such as the first lens to the eighth lens, and reasonably allocates the optical power, surface shape, curvature radius, center thickness of each lens, on-axis spacing, and air spacing between adjacent lenses of each lens, so that the above optical imaging lens has at least one beneficial effect of telephoto, miniaturization, high imaging quality, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Other features, purposes and advantages of the present application will become more apparent through the following detailed description of non-limiting embodiments in conjunction with the accompanying drawings. In the accompanying drawings:

[0025] Figure 1 A schematic structural diagram of an optical imaging lens according to Embodiment 1 of the present application is shown;

[0026] FIG. 2A to FIG. 2D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 1 are respectively shown;

[0027] Figure 3 A schematic structural diagram of an optical imaging lens according to Embodiment 2 of the present application is shown;

[0028] FIG. 4A to FIG. 4D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 2 are respectively shown;

[0029] Figure 5 A schematic structural diagram of an optical imaging lens according to Embodiment 3 of the present application is shown;

[0030] FIG. 6A to FIG. 6D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 3 are respectively shown;

[0031] Figure 7 A schematic structural diagram of an optical imaging lens according to Embodiment 4 of the present application is shown;

[0032] FIG. 8A to FIG. 8D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 4 are respectively shown;

[0033] Fig. 9 A schematic structural diagram of an optical imaging lens according to Embodiment 5 of the present application is shown;

[0034] FIG. 10A to FIG. 10DThe axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 5 are respectively shown. DETAILED DESCRIPTION

[0035] In order to better understand the present application, a more detailed description will be made of various aspects of the present application with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of exemplary embodiments of the present application, and 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.

[0036] It should be noted that in this specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the features. Therefore, without departing from the teaching of the present application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0037] In the drawings, the thickness, size and shape of the lenses have been slightly exaggerated for ease of explanation. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to the shapes of the spherical or aspherical surfaces shown in the drawings. The drawings are only examples and are not drawn strictly to scale.

[0038] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object is called the object side of the lens, and the surface of each lens closest to the imaging plane is called the image side of the lens.

[0039] 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 exclude 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 listed 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.

[0040] Unless otherwise defined, all terms (including technical terms and scientific terms) used in this article have the same meaning as commonly understood by ordinary technicians in the field to which this application belongs. It should also be understood that terms (such as terms defined in commonly used dictionaries) should be interpreted as having the same meaning as their meaning in the context of the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined in this article.

[0041] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0042] The features, principles and other aspects of the present application are described in detail below.

[0043] The optical imaging lens according to the exemplary embodiment of the present application may include, for example, eight lenses with optical power, namely, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens. The eight lenses are arranged in sequence from the object side to the image side along the optical axis. In the first lens to the eighth lens, each adjacent two lenses may have an air gap between them.

[0044] In an exemplary embodiment, the first lens has positive or negative optical power; the second lens has positive or negative optical power; the third lens has positive or negative optical power; the fourth lens has positive or negative optical power; the fifth lens has positive or negative optical power; the sixth lens has positive or negative optical power; the seventh lens has positive or negative optical power and the eighth lens has positive or negative optical power.

[0045] In example embodiments, the first lens may have positive refractive power, its object-side surface may be convex, and its image-side surface may be concave.

[0046] In example embodiments, the object-side surface of the second lens may be a convex surface, and the image-side surface may be a concave surface.

[0047] In an exemplary embodiment, the third lens may have positive power, its object side surface may be convex, and its image side surface may be concave. Reasonable distribution of the power of the third lens and the curvature radii of its object side surface and image side surface is conducive to the convergence of light and the distribution of the power of each lens.

[0048] In example embodiments, the fourth lens may have negative power, an object-side surface thereof may be concave, and an image-side surface thereof may be concave.

[0049] In example embodiments, the fifth lens may have positive refractive power, and its object-side surface may be convex.

[0050] In example embodiments, the sixth lens may have positive refractive power, an object-side surface thereof may be concave, and an image-side surface thereof may be convex.

[0051] In an exemplary embodiment, the seventh lens may have negative optical power, its object side surface may be concave, and its image side surface may be convex. Reasonable distribution of the optical power of the seventh lens and the curvature radii of its object side surface and image side surface is conducive to the convergence of marginal light.

[0052] In example embodiments, the eighth lens may have negative power, and its object-side surface may be concave.

[0053] In an exemplary embodiment, the distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis and the total effective focal length f of the optical imaging lens satisfy: TTL / f≤1.0. For example, 0.9≤TTL / f≤1.0. Reasonably controlling the ratio of the total length of the system to the total focal length within a reasonable range can increase the depth of field while ensuring the miniaturization of the system, and obtain more information on the object side in the longitudinal direction.

[0054] In an exemplary embodiment, the aperture value Fno of the optical imaging lens satisfies: 1.45≤Fno≤2.0. Reasonable control of the system aperture value within a reasonable range can ensure that the system obtains more light input, so that the captured scene is brighter.

[0055] In an exemplary embodiment, the effective focal length f4 of the fourth lens, the effective focal length f7 of the seventh lens, and the effective focal length f1 of the first lens satisfy: -2.0<(f4+f7) / f1<-1.0. For example, -1.8<(f4+f7) / f1<-1.2. By constraining the ratio of the sum of the effective focal lengths of the fourth lens and the seventh lens to the effective focal length of the first lens to be within a reasonable range, the optical power between the lenses of the system can be reasonably distributed, reducing the overall sensitivity.

[0056] In an exemplary embodiment, the effective focal length f3 of the third lens, the effective focal length f5 of the fifth lens, and the total effective focal length f of the optical imaging lens satisfy: 2.0<(f3+f5) / f<3.0. By constraining the ratio of the sum of the effective focal lengths of the third lens and the fifth lens to the total effective focal length of the system within a reasonable range, the contribution of the middle lens of the system to the aberration can be effectively controlled, the system aberration can be reduced, and the imaging quality can be improved.

[0057] In an exemplary embodiment, the radius of curvature R5 of the object side surface of the third lens and the radius of curvature R1 of the object side surface of the first lens satisfy: 0.5<R5 / R1<1.5. For example, 0.9<R5 / R1<1.2. Reasonable control of the ratio of the radius of curvature of the object side surface of the third lens and the object side surface of the first lens can make the incident angle of the central field of view light when reaching the two surfaces smaller, and reduce the optical modulation transfer function (MTF) tolerance sensitivity of the central field of view.

[0058] In an exemplary embodiment, the curvature radius R2 of the image side surface of the first lens and the curvature radius R3 of the object side surface of the second lens satisfy: 1.0<R2 / R3<1.5. For example, 1.1<R2 / R3<1.3. Reasonable control of the curvature radius ratio of the image side surface of the first lens and the object side surface of the second lens can control the size of the internal field of view at the incident angle of the second lens, which is conducive to controlling the aberration of the internal field of view.

[0059] In an exemplary embodiment, the curvature radius R4 of the image side surface of the second lens, the curvature radius R6 of the image side surface of the third lens, and the curvature radius R7 of the object side surface of the fourth lens satisfy: -4.5<(R4+R6) / R7<-0.5. For example, -4.5<(R4+R6) / R7<-0.9. By constraining the ratio of the sum of the curvature radii of the image side surface of the second lens and the image side surface of the third lens to the curvature radius of the object side surface of the fourth lens within a certain range, the coma of the on-axis field of view and the off-axis field of view can be reduced, so that the imaging system has good imaging quality.

[0060] In an exemplary embodiment, the curvature radius R8 of the image side surface of the fourth lens and the curvature radius R9 of the object side surface of the fifth lens satisfy: 1.5<R9 / R8<3.5. For example, 1.8<R9 / R8<3.4. Reasonable control of the curvature radius ratio of the image side surface of the fourth lens and the object side surface of the fifth lens can make the light of the edge field of view enter the fourth lens and the fifth lens at a smaller incident angle, which is conducive to correcting the aberration of the off-axis field of view.

[0061] In an exemplary embodiment, the curvature radius R11 of the object side surface of the sixth lens, the curvature radius R12 of the image side surface of the sixth lens, and the curvature radius R13 of the object side surface of the seventh lens satisfy: 2.5≤(R11+R13) / R12<8.0. By constraining the ratio of the sum of the curvature radii of the object side surface of the sixth lens and the object side surface of the seventh lens to the curvature radius of the image side surface of the sixth lens within a certain range, the field curvature of each off-axis field of view can be balanced, thereby improving the imaging quality of the off-axis field of view.

[0062] In an exemplary embodiment, the air interval T12 between the first lens and the second lens on the optical axis, the air interval T23 between the second lens and the third lens on the optical axis, and the air interval T34 between the third lens and the fourth lens on the optical axis satisfy: 3.5<T34 / (T12+T23)<15. By satisfying the conditional formula 3.5<T34 / (T12+T23)<15, the sensitivity of the front lenses from the first lens to the fourth lens can be reasonably distributed, thereby improving manufacturability.

[0063] In an exemplary embodiment, the air interval T45 between the fourth lens and the fifth lens on the optical axis and the air interval T78 between the seventh lens and the eighth lens on the optical axis satisfy: 1.5<T78 / T45<2.5. For example, 1.6<T78 / T45<2.2. Satisfying the conditional formula 1.5<T78 / T45<2.5 is conducive to reducing the total length of the system and improving aberration distribution, thereby improving imaging quality.

[0064] In an exemplary embodiment, the air interval T56 between the fifth lens and the sixth lens on the optical axis and the air interval T67 between the sixth lens and the seventh lens on the optical axis satisfy: 5.0≤T56 / T67<43.0. By satisfying the conditional expression 5.0≤T56 / T67<43.0, the relative illumination of the off-axis field of view is increased.

[0065] In an exemplary embodiment, the center thickness CT1 of the first lens on the optical axis, the center thickness CT2 of the second lens on the optical axis, and the center thickness CT3 of the third lens on the optical axis satisfy: 1.0≤CT1 / (CT2+CT3)<1.5. For example, 1.1<CT1 / (CT2+CT3)<1.4. By reasonably controlling the ratio of the center thickness of the first lens to the sum of the center thicknesses of the second lens and the third lens within a certain range, it is beneficial to control the shapes of the front lenses from the first lens to the third lens, and it is beneficial to the processing, molding and assembly of the lenses.

[0066] In an exemplary embodiment, the TV distortion TV of the optical imaging lens satisfies: |TV|≤2.5%. By properly controlling the TV distortion of the system within a reasonable range, it is helpful to reduce the degree of distortion of the imaging quality and improve the imaging quality.

[0067] In an exemplary embodiment, the optical imaging lens may further include an aperture. The aperture may be disposed at an appropriate position as required. For example, the aperture may be disposed between the third lens and the fourth lens. Optionally, the optical imaging lens may further include a filter for correcting color deviation and / or a protective glass for protecting a photosensitive element located on the imaging surface.

[0068] The present application proposes an optical imaging lens with the characteristics of long focus, high imaging quality, and miniaturization. The optical imaging lens according to the above-mentioned embodiment of the present application can use multiple lenses, such as the eight lenses mentioned above. By reasonably allocating the focal length, surface shape, center thickness of each lens, and axial spacing between each lens, etc., the incident light can be effectively converged, the total optical length of the imaging lens can be reduced, and the processability of the imaging lens can be improved, making the optical imaging lens more conducive to production and processing.

[0069] 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 of the first lens to the image side of the eighth 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 having a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has a better curvature radius characteristic, and has the advantages of improving distortion aberration and improving astigmatism aberration. After adopting an aspherical lens, the aberration occurring during imaging can be eliminated as much as possible, thereby improving the imaging quality. Optionally, at least one of the object side and image side of each lens in the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens and the eighth lens is an aspherical mirror surface. Optionally, the object side and image side of each lens in the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens and the eighth lens are all aspherical mirror surfaces.

[0070] However, those skilled in the art should understand that, without departing from the technical solution 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 eight lenses are described as an example in the embodiments, the optical imaging lens is not limited to including eight lenses. If necessary, the optical imaging lens may also include other numbers of lenses.

[0071] Specific embodiments of the optical imaging lens applicable to the above-mentioned embodiments are further described below with reference to the accompanying drawings.

[0072] Example 1

[0073] The following reference Figures 1 to 2D An optical imaging lens according to Embodiment 1 of the present application is described. Figure 1 is a schematic diagram showing the structure of an optical imaging lens according to Example 1 of the present application.

[0074] like Figure 1As shown, the optical imaging lens includes, from the object side to the image side along the optical axis, a first lens E1, a second lens E2, a third lens E3, an aperture STO, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9 and an imaging surface S19.

[0075] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has negative focal power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has positive focal power, and its object side surface S5 is convex, and its image side surface S6 is concave. The fourth lens E4 has negative focal power, and its object side surface S7 is concave, and its image side surface S8 is concave. The fifth lens E5 has positive focal power, and its object side surface S9 is convex, and its image side surface S10 is concave. The sixth lens E6 has positive focal power, and its object side surface S11 is concave, and its image side surface S12 is convex. The seventh lens E7 has negative focal power, and its object side surface S13 is concave, and its image side surface S14 is convex. The eighth lens E8 has negative focal power, and its object side surface S15 is concave, and its image side surface S16 is concave. The filter E9 has an object-side surface S17 and an image-side surface S18. Light from the object passes through the surfaces S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0076] Table 1 shows the basic parameters of the optical imaging lens of Example 1, wherein the units of the radius of curvature, thickness and focal length are all millimeters (mm).

[0077]

[0078] Table 1

[0079] In this embodiment, the total effective focal length of the optical imaging lens is f=12.87 mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S19 is 11.70 mm, half of the diagonal length of the effective pixel area on the imaging surface S19 is ImgH=2.50 mm, the relative F number (i.e., aperture value) Fno of the optical imaging lens is 2.00, and the maximum half field of view Semi-FOV of the optical imaging lens is 10.9°.

[0080] In Example 1, the object side surface and the image side surface of any lens among the first lens E1 to the eighth lens E8 are both aspherical surfaces, and the surface shape x of each aspherical lens can be defined by but not limited to the following aspherical surface formula:

[0081]

[0082] Wherein, x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at a height of h along the optical axis; c is the paraxial curvature of the aspheric surface, c=1 / R (i.e., the paraxial curvature c is the reciprocal of the curvature radius R in Table 1 above); k is the cone coefficient; Ai is the correction coefficient of the i-th order of the aspheric surface. Table 2 below gives the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, 10 , A 12 , A 14 , A 16 and A 18 .

[0083] Face number A4 A6 A8 A10 A12 A14 A16 A18 S1 -1.1240E-01 -1.1377E-02 4.9933E-03 3.0378E-03 8.8292E-04 -1.5590E-04 -1.4893E-04 -2.2157E-05 S2 -3.9087E-02 2.7176E-02 3.0328E-03 2.7106E-03 -7.1785E-04 -1.4783E-03 6.0278E-04 -5.1190E-05 S3 3.8088E-02 8.0488E-03 2.3618E-03 9.9239E-04 9.1212E-04 -4.5947E-04 -4.5054E-05 3.7895E-05 S4 -6.1078E-03 -3.9671E-03 8.2708E-03 -1.3386E-03 1.8275E-03 9.1823E-05 -1.0555E-04 2.3586E-05 S5 -5.8223E-02 -1.8672E-02 -5.7536E-04 -1.1191E-03 9.6573E-04 -1.4847E-04 1.0524E-05 -7.1286E-06 S6 -1.5904E-01 -3.3154E-02 7.7908E-03 8.9115E-04 -1.8940E-03 -7.8164E-05 1.4905E-04 -1.0412E-04 S7 2.1936E-02 1.6047E-02 -2.0826E-04 1.2099E-04 7.5889E-04 -1.2732E-04 9.2575E-06 2.6897E-06 S8 2.0727E-02 1.2881E-02 1.2990E-03 -7.0948E-04 3.1253E-05 3.0008E-05 -3.3896E-06 2.0137E-06 S9 2.7375E-02 7.2014E-03 2.6641E-03 4.0337E-03 3.0218E-03 6.4356E-04 1.1566E-04 3.3423E-05 S10 -2.9276E-01 -7.2130E-03 9.0628E-03 4.5882E-03 3.3966E-03 1.0941E-03 3.8669E-04 7.8879E-05 S11 -5.3076E-01 6.9468E-02 1.7419E-02 -8.6142E-03 1.0102E-02 3.1156E-04 -3.2249E-03 -1.1067E-03 S12 -5.9764E-02 4.1647E-02 6.9848E-03 -2.4234E-03 6.7292E-03 -1.7201E-03 8.7026E-04 -1.2047E-03 S13 3.8861E-02 -1.1212E-01 -1.8496E-03 3.3582E-02 -9.5309E-03 -8.5506E-03 -4.2886E-03 -1.0956E-03 S14 1.9873E+00 -5.0423E-01 9.3845E-02 4.3579E-02 -3.4460E-02 4.8169E-03 -5.4707E-04 1.7161E-02 S15 4.8910E-01 -6.1018E-02 -3.8897E-01 8.5919E-02 8.7450E-02 9.3691E-03 -2.6668E-02 -1.0670E-02 S16 -2.7313E+00 3.1475E-01 -2.5549E-01 2.2505E-02 5.3565E-02 1.1211E-01 5.0406E-02 1.4191E-02

[0084] Table 2

[0085] Figure 2A The axial chromatic aberration curve of the optical imaging lens of Example 1 is shown, which indicates the deviation of light of different wavelengths from the focal point behind the lens. Figure 2B The astigmatism curve of the optical imaging lens of Example 1 is shown, which represents the meridional image curvature and the sagittal image curvature. Figure 2C The distortion curve of the optical imaging lens of Example 1 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 2D The magnification chromatic aberration curve of the optical imaging lens of Example 1 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 2A to FIG. 2D It can be seen that the optical imaging lens provided in Example 1 can achieve good imaging quality.

[0086] Example 2

[0087] The following reference Figures 3 to 4D An optical imaging lens according to Embodiment 2 of the present application is described. Figure 3 A schematic structural diagram of an optical imaging lens according to Embodiment 2 of the present application is shown.

[0088] like Figure 3 As shown, the optical imaging lens includes, from the object side to the image side along the optical axis, a first lens E1, a second lens E2, a third lens E3, an aperture STO, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9 and an imaging surface S19.

[0089] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has positive focal power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has positive focal power, and its object side surface S5 is convex, and its image side surface S6 is concave. The fourth lens E4 has negative focal power, and its object side surface S7 is concave, and its image side surface S8 is concave. The fifth lens E5 has positive focal power, and its object side surface S9 is convex, and its image side surface S10 is concave. The sixth lens E6 has positive focal power, and its object side surface S11 is concave, and its image side surface S12 is convex. The seventh lens E7 has negative focal power, and its object side surface S13 is concave, and its image side surface S14 is convex. The eighth lens E8 has negative focal power, and its object side surface S15 is concave, and its image side surface S16 is convex. The filter E9 has an object-side surface S17 and an image-side surface S18. Light from the object passes through the surfaces S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0090] In this embodiment, the total effective focal length of the optical imaging lens is f=10.88 mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S19 is 10.88 mm, half of the diagonal length of the effective pixel area on the imaging surface S19 is ImgH=2.50 mm, the relative F number (i.e., aperture value) Fno of the optical imaging lens is 1.90, and the maximum half field of view Semi-FOV of the optical imaging lens is 12.8°.

[0091] Table 3 shows the basic parameters of the optical imaging lens of Example 2, wherein the units of the radius of curvature, thickness and focal length are all millimeters (mm).

[0092]

[0093] Table 3

[0094] In Example 2, the object side surface and the image side surface of any lens from the first lens E1 to the eighth lens E8 are aspherical surfaces. Table 4 below lists the high-order coefficients A4, A6, A8, A 10 , A 12 , A 14 , A 16 and A 18 .

[0095]

[0096]

[0097] Table 4

[0098] Figure 4AThe axial chromatic aberration curve of the optical imaging lens of Example 2 is shown, which indicates that light of different wavelengths deviates from the focal point behind the lens. Figure 4B The astigmatism curve of the optical imaging lens of Example 2 is shown, which represents the meridional image curvature and the sagittal image curvature. Figure 4C The distortion curve of the optical imaging lens of Example 2 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 4D The magnification chromatic aberration curve of the optical imaging lens of Example 2 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 4A to FIG. 4D It can be seen that the optical imaging lens provided in Example 2 can achieve good imaging quality.

[0099] Example 3

[0100] The following reference Figures 5 to 6D An optical imaging lens according to Embodiment 3 of the present application is described. Figure 5 A schematic structural diagram of an optical imaging lens according to Embodiment 3 of the present application is shown.

[0101] like Figure 5 As shown, the optical imaging lens includes, from the object side to the image side along the optical axis, a first lens E1, a second lens E2, a third lens E3, an aperture STO, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9 and an imaging surface S19.

[0102] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has positive focal power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has positive focal power, and its object side surface S5 is convex, and its image side surface S6 is concave. The fourth lens E4 has negative focal power, and its object side surface S7 is concave, and its image side surface S8 is concave. The fifth lens E5 has positive focal power, and its object side surface S9 is convex, and its image side surface S10 is convex. The sixth lens E6 has positive focal power, and its object side surface S11 is concave, and its image side surface S12 is convex. The seventh lens E7 has negative focal power, and its object side surface S13 is concave, and its image side surface S14 is convex. The eighth lens E8 has negative focal power, and its object side surface S15 is concave, and its image side surface S16 is convex. The filter E9 has an object-side surface S17 and an image-side surface S18. Light from the object passes through the surfaces S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0103] In this embodiment, the total effective focal length of the optical imaging lens is f=10.59 mm, the distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S19 on the optical axis is TTL=10.49 mm, half of the diagonal length of the effective pixel area on the imaging surface S19 is ImgH=2.50 mm, the relative F number (i.e., aperture value) of the optical imaging lens is Fno=1.80, and the maximum half field angle Semi-FOV of the optical imaging lens is 13.5°

[0104] Table 5 shows the basic parameters of the optical imaging lens of Example 3, wherein the units of the radius of curvature, thickness and focal length are all millimeters (mm).

[0105]

[0106]

[0107] Table 5

[0108] In Example 3, the object side surface and the image side surface of any lens from the first lens E1 to the eighth lens E8 are aspherical surfaces. Table 6 below lists the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A56, A57, A58, A 10 , A 12 , A 14 , A 16 and A 18 .

[0109] Face number A4 A6 A8 A10 A12 A14 A16 A18 S1 -1.3051E-01 -8.6341E-03 1.4282E-02 5.3428E-03 4.8246E-04 -2.9212E-04 -1.1388E-04 -1.4118E-05 S2 -3.2371E-02 2.8250E-02 4.5236E-03 -7.0425E-04 -3.1827E-04 -3.3174E-04 -2.2659E-04 1.9359E-04 S3 5.4387E-02 1.3235E-02 8.0511E-03 1.6647E-03 1.2582E-03 -2.5928E-04 -6.5092E-04 5.0333E-05 S4 -1.5895E-03 -2.1344E-03 8.9399E-03 1.0517E-04 1.7062E-03 9.7982E-05 -1.1880E-04 1.2013E-05 S5 -1.0052E-01 -2.6461E-02 -1.7903E-03 -9.2470E-04 3.9739E-04 -7.2051E-05 -7.2972E-05 -1.6405E-05 S6 -7.5578E-02 -2.2152E-02 1.7633E-03 1.1940E-03 -3.8392E-04 3.3376E-05 -1.2831E-05 4.1128E-06 S7 4.8892E-03 6.4080E-03 -1.4142E-03 -2.5530E-04 2.4881E-04 -5.9430E-05 4.6259E-06 -2.9820E-07 S8 3.5358E-02 1.9186E-02 3.9301E-04 -1.2736E-03 -1.4943E-04 -6.8977E-05 -4.3955E-06 5.6786E-07 S9 2.1800E-03 4.9217E-03 -3.2812E-04 -6.2856E-04 -7.9232E-05 -2.0196E-05 -6.2602E-06 -1.7524E-06 S10 -1.0199E-01 -1.2742E-03 -4.5320E-04 -4.9377E-04 1.7205E-05 1.3733E-06 1.4680E-06 7.7748E-07 S11 -1.9203E-01 2.9291E-03 4.3034E-03 -5.9452E-04 1.9433E-05 3.8259E-05 8.4328E-06 1.4245E-06 S12 -5.3653E-02 1.6038E-03 5.4855E-03 -1.1605E-03 7.3654E-04 -2.5424E-04 -1.8102E-05 6.1005E-05 S13 1.5727E-03 8.1458E-03 -1.1610E-03 4.5340E-03 1.5339E-03 2.0951E-04 8.0482E-04 3.0733E-04 S14 -2.6402E-02 2.2472E-02 -6.9105E-03 4.0398E-03 -6.8800E-04 -9.9004E-05 9.0959E-05 4.9315E-06 S15 -1.9369E-01 7.6920E-02 -1.1660E-02 9.8646E-03 2.4702E-04 2.4445E-05 -2.3034E-04 4.6900E-05 S16 -8.2244E-01 7.1173E-02 -2.8505E-02 1.4134E-02 8.1111E-04 1.3790E-03 -3.8177E-05 1.6041E-04

[0110] Table 6

[0111] Fig. 6A The axial chromatic aberration curve of the optical imaging lens of Example 3 is shown, which indicates that light of different wavelengths deviates from the focal point behind the lens. Figure 6B The astigmatism curve of the optical imaging lens of Example 3 is shown, which represents the meridional image curvature and the sagittal image curvature. Figure 6C The distortion curve of the optical imaging lens of Example 3 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig.6D The magnification chromatic aberration curve of the optical imaging lens of Example 3 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 6A to FIG. 6D It can be seen that the optical imaging lens provided in Example 3 can achieve good imaging quality.

[0112] Example 4

[0113] The following reference Figures 7 to 8D An optical imaging lens according to Embodiment 4 of the present application is described. Figure 7A schematic structural diagram of an optical imaging lens according to Embodiment 4 of the present application is shown.

[0114] like Figure 7 As shown, the optical imaging lens includes, from the object side to the image side along the optical axis, a first lens E1, a second lens E2, a third lens E3, an aperture STO, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9 and an imaging surface S19.

[0115] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has positive focal power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has positive focal power, and its object side surface S5 is convex, and its image side surface S6 is concave. The fourth lens E4 has negative focal power, and its object side surface S7 is concave, and its image side surface S8 is concave. The fifth lens E5 has positive focal power, and its object side surface S9 is convex, and its image side surface S10 is convex. The sixth lens E6 has positive focal power, and its object side surface S11 is concave, and its image side surface S12 is convex. The seventh lens E7 has negative focal power, and its object side surface S13 is concave, and its image side surface S14 is convex. The eighth lens E8 has negative focal power, and its object side surface S15 is concave, and its image side surface S16 is convex. The filter E9 has an object-side surface S17 and an image-side surface S18. Light from the object passes through the surfaces S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0116] In this embodiment, the total effective focal length of the optical imaging lens is f=10.71 mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S19 is 10.50 mm, half of the diagonal length of the effective pixel area on the imaging surface S19 is ImgH=2.50 mm, the relative F number (i.e., aperture value) Fno of the optical imaging lens is 1.70, and the maximum half field of view Semi-FOV of the optical imaging lens is 13.4°.

[0117] Table 7 shows the basic parameters of the optical imaging lens of Example 4, wherein the units of the radius of curvature, thickness and focal length are all millimeters (mm).

[0118]

[0119] Table 7

[0120] In Example 4, the object side surface and the image side surface of any lens from the first lens E1 to the eighth lens E8 are both aspherical surfaces. Table 8 below lists the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A56, A57, A58, 10 , A 12 , A 14 , A 16 and A18 .

[0121]

[0122]

[0123] Table 8

[0124] Fig. 8A The axial chromatic aberration curve of the optical imaging lens of Example 4 is shown, which indicates the deviation of light of different wavelengths from the focal point behind the lens. Figure 8B The astigmatism curve of the optical imaging lens of Example 4 is shown, which represents the meridional image curvature and the sagittal image curvature. Figure 8C The distortion curve of the optical imaging lens of Example 4 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig.8D The magnification chromatic aberration curve of the optical imaging lens of Example 4 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 8A to FIG. 8D It can be seen that the optical imaging lens provided in Example 4 can achieve good imaging quality.

[0125] Example 5

[0126] The following reference Figures 9 to 10D An optical imaging lens according to Embodiment 5 of the present application is described. Fig. 9 A schematic structural diagram of an optical imaging lens according to Embodiment 5 of the present application is shown.

[0127] like Fig. 9 As shown, the optical imaging lens includes, from the object side to the image side along the optical axis, a first lens E1, a second lens E2, a third lens E3, an aperture STO, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9 and an imaging surface S19.

[0128] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has positive focal power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has positive focal power, and its object side surface S5 is convex, and its image side surface S6 is concave. The fourth lens E4 has negative focal power, and its object side surface S7 is concave, and its image side surface S8 is concave. The fifth lens E5 has positive focal power, and its object side surface S9 is convex, and its image side surface S10 is concave. The sixth lens E6 has positive focal power, and its object side surface S11 is concave, and its image side surface S12 is convex. The seventh lens E7 has negative focal power, and its object side surface S13 is concave, and its image side surface S14 is convex. The eighth lens E8 has negative focal power, and its object side surface S15 is concave, and its image side surface S16 is convex. The filter E9 has an object-side surface S17 and an image-side surface S18. Light from the object passes through the surfaces S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0129] In this embodiment, the total effective focal length of the optical imaging lens is f=10.67 mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S19 is 10.56 mm, half of the diagonal length of the effective pixel area on the imaging surface S19 is ImgH=2.50 mm, the relative F number (i.e., aperture value) Fno of the optical imaging lens is 1.45, and the maximum half field of view Semi-FOV of the optical imaging lens is 13.0°.

[0130] Table 9 shows the basic parameters of the optical imaging lens of Example 5, wherein the units of the radius of curvature, thickness and focal length are all millimeters (mm).

[0131]

[0132] Table 9

[0133] In Example 5, the object side surface and the image side surface of any lens from the first lens E1 to the eighth lens E8 are aspherical surfaces. The following Table 10 lists the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A56, A57, A58 10 , A 12 , A 14 , A 16 and A 18 .

[0134] Face number A4 A6 A8 A10 A12 A14 A16 A18 S1 -2.8743E-01 -3.5377E-02 1.9362E-02 5.1532E-03 -4.0225E-03 -3.4460E-03 -1.0288E-03 -1.3050E-04 S2 -6.8101E-02 8.0398E-02 3.0463E-03 -4.2725E-03 -4.4312E-03 1.8042E-04 6.5397E-04 -1.2421E-04 S3 5.2925E-02 1.4237E-02 5.5718E-03 1.2573E-03 6.5062E-04 3.1174E-04 -3.2400E-04 4.5884E-05 S4 1.1002E-01 5.1494E-02 3.4636E-02 2.1699E-03 1.5580E-03 -2.4970E-03 -7.2473E-04 4.4210E-04 S5 -1.1119E-01 -1.2843E-02 4.4508E-03 -8.5485E-04 3.7498E-04 -9.3075E-05 3.3910E-07 -3.4358E-06 S6 -4.8492E-02 -1.1239E-02 3.5027E-03 9.3179E-04 -4.6699E-04 -2.5330E-06 1.4224E-05 1.3797E-06 S7 7.9024E-02 1.9775E-02 -3.5666E-03 2.1511E-03 -5.0157E-04 -1.8860E-04 2.1348E-04 -3.4800E-05 S8 1.6800E-02 2.3420E-02 2.5856E-03 -3.4153E-05 2.1372E-04 -5.1980E-05 -2.1354E-05 -7.9342E-06 S9 -5.5984E-03 4.3366E-03 1.0596E-03 -3.2056E-04 1.5520E-05 -1.2165E-05 -5.4170E-06 5.1315E-08 S10 -6.9684E-02 -6.4672E-03 -9.4937E-04 -4.3884E-04 8.6137E-05 2.0901E-05 1.0755E-05 2.3782E-06 S11 -2.2423E-01 -1.1250E-02 1.9742E-03 -1.5330E-04 1.0795E-04 2.4177E-05 -6.8042E-06 2.2194E-06 S12 -1.2202E-01 1.0140E-02 -1.0424E-03 1.1643E-03 -6.4542E-04 3.2126E-04 -1.0800E-04 1.8105E-05 S13 1.1043E-01 -4.8656E-02 -1.4323E-02 9.5658E-04 -2.9179E-03 2.3380E-03 1.5377E-04 5.4431E-04 S14 1.8942E-01 -2.5784E-02 4.1102E-04 2.8829E-03 -1.5957E-03 3.8987E-04 -8.6028E-05 2.0660E-05 S15 -3.6028E-01 1.0478E-01 -2.3027E-02 1.4508E-02 -1.3570E-03 2.9411E-04 -6.2836E-04 2.0044E-04 S16 -9.6577E-01 1.4354E-01 -6.3979E-02 2.1034E-02 -3.3907E-03 2.9031E-03 -6.8920E-04 3.7589E-04

[0135] Table 10

[0136] Fig. 10A The axial chromatic aberration curve of the optical imaging lens of Example 5 is shown, which indicates the deviation of light of different wavelengths from the focal point behind the lens. Fig. 10BThe astigmatism curve of the optical imaging lens of Example 5 is shown, which represents the meridional image curvature and the sagittal image curvature. Fig. 10C The distortion curve of the optical imaging lens of Example 5 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig. 10D The magnification chromatic aberration curve of the optical imaging lens of Example 5 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 10A to FIG. 10D It can be seen that the optical imaging lens provided in Example 5 can achieve good imaging quality.

[0137] In summary, Examples 1 to 5 respectively satisfy the relationships shown in Table 11.

[0138] Conditional / Example 1 2 3 4 5 TTL / f 0.91 1.00 0.99 0.98 0.99 (f4+f7) / f1 -1.30 -1.57 -1.70 -1.53 -1.24 (f3+f5) / f 2.183 2.544 2.76 2.51 2.93 R5 / R1 1.17 1.10 0.96 0.95 0.96 R2 / R3 1.15 1.22 1.16 1.17 1.18 (R4+R6) / R7 -1.60 -2.47 -0.99 -1.26 -4.37 R9 / R8 2.06 1.83 3.31 3.36 2.80 (R11+R13) / R12 2.53 2.73 2.85 2.87 8.04 T34 / (T12+T23) 3.64 4.78 14.66 5.70 4.63 T78 / T45 2.00 2.05 2.08 2.11 1.62 T56 / T67 5.15 5.21 14.82 32.63 42.98 CT1 / (CT2+CT3) 1.25 1.36 1.14 1.22 1.29

[0139] Table 11

[0140] The present application also provides an imaging device, whose electronic photosensitive element can be a photosensitive 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 in a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens group described above.

[0141] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present 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, and its object side surface is convex and its image side surface is concave; a second lens having optical power, wherein the object side surface is convex and the image side surface is concave; The third lens has positive power, its object side surface is convex and its image side surface is concave; a fourth lens element having negative optical power, whose object-side surface is concave and whose image-side surface is concave; a fifth lens having positive refractive power and a convex object side surface; a sixth lens having positive refractive power, whose object side surface is concave and image side surface is convex; a seventh lens element having negative optical power, whose object-side surface is concave and whose image-side surface is convex; and an eighth lens having negative optical power, whose object side surface is concave; Wherein, the number of lenses having optical power in the optical imaging lens is eight; The distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis and the total effective focal length f of the optical imaging lens satisfy: 0.91≤TTL / f≤1.0; and The effective focal length f4 of the fourth lens, the effective focal length f7 of the seventh lens and the effective focal length f1 of the first lens satisfy: -1.70≤(f4+f7) / f1≤-1.

24.

2. The optical imaging lens according to claim 1, wherein: The effective focal length f3 of the third lens, the effective focal length f5 of the fifth lens and the total effective focal length f of the optical imaging lens satisfy: 2.183≤(f3+f5) / f≤2.

93.

3. The optical imaging lens according to claim 2, wherein: The aperture value Fno of the optical imaging lens satisfies: 1.45≤Fno≤2.

0.

4. The optical imaging lens according to claim 1, wherein: A curvature radius R5 of the object-side surface of the third lens and a curvature radius R1 of the object-side surface of the first lens satisfy: 0.95≤R5 / R1≤1.

17.

5. The optical imaging lens according to claim 1, wherein: A curvature radius R2 of the image-side surface of the first lens and a curvature radius R3 of the object-side surface of the second lens satisfy: 1.15≤R2 / R3≤1.

22.

6. The optical imaging lens according to claim 1, wherein: A curvature radius R4 of the image side surface of the second lens, a curvature radius R6 of the image side surface of the third lens, and a curvature radius R7 of the object side surface of the fourth lens satisfy: -4.37≤(R4+R6) / R7≤-0.

99.

7. The optical imaging lens according to claim 1, wherein: A curvature radius R8 of the image-side surface of the fourth lens and a curvature radius R9 of the object-side surface of the fifth lens satisfy: 1.83≤R9 / R8≤3.

36.

8. The optical imaging lens according to claim 1, wherein: A curvature radius R11 of the object-side surface of the sixth lens, a curvature radius R12 of the image-side surface of the sixth lens, and a curvature radius R13 of the object-side surface of the seventh lens satisfy: 2.5≤(R11+R13) / R12<8.

0.

9. The optical imaging lens according to claim 1, wherein: An air interval T12 between the first lens and the second lens on the optical axis, an air interval T23 between the second lens and the third lens on the optical axis, and an air interval T34 between the third lens and the fourth lens on the optical axis satisfy: 3.64≤T34 / (T12+T23)≤14.

66.

10. The optical imaging lens according to claim 1, wherein: An air interval T45 between the fourth lens and the fifth lens on the optical axis and an air interval T78 between the seventh lens and the eighth lens on the optical axis satisfy: 1.62≤T78 / T45≤2.

11.

11. The optical imaging lens according to claim 1, wherein: An air interval T56 between the fifth lens and the sixth lens on the optical axis and an air interval T67 between the sixth lens and the seventh lens on the optical axis satisfy: 5.15≤T56 / T67<43.

0.

12. The optical imaging lens according to claim 1, wherein: A center thickness CT1 of the first lens on the optical axis, a center thickness CT2 of the second lens on the optical axis, and a center thickness CT3 of the third lens on the optical axis satisfy: 1.14≤CT1 / (CT2+CT3)≤1.

36.

13. The optical imaging lens according to claim 1, wherein: The TV distortion TV of the optical imaging lens satisfies: |TV|≤2.5%.

Images