Optical imaging lens

Abstract

The present application discloses an optical imaging lens, which comprises, in order from the object side to the image side along the optical axis: a first lens with optical power; a second lens with optical power, whose object side surface is convex and whose image side surface is concave; a third lens with optical power; a fourth lens with optical power; a fifth lens with optical power; a sixth lens with positive optical power, whose object side surface is convex and whose image side surface is convex; a seventh lens with negative optical power, whose object side surface is concave and whose image side surface is concave; a distance FFL from the image side surface of the seventh lens to the imaging surface of the optical imaging lens on the optical axis and a distance TTL from the object side surface of the first lens to the imaging surface on the optical axis satisfy FFL / TTL>0.3.

Description

Technical Field

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

[0002] In recent years, with the development of science and technology, the market demand for optical imaging lenses suitable for portable electronic products has gradually increased. Mobile phones and other portable devices are usually equipped with camera modules to enable the mobile phones to have camera functions. The camera module is usually equipped with a charge-coupled device (CCD) type image sensor or a complementary metal oxide semiconductor (CMOS) type image sensor, and an optical imaging lens. The optical imaging lens can collect the light on the object side, and the imaging light travels along the optical path of the optical imaging lens and irradiates the image sensor, and then the image sensor converts the light signal into an electrical signal to form image data.

[0003] With the upgrading of consumer electronic products, the development of image software functions and video software functions on consumer electronic products, as well as the improvement of performance and reduction of size of CCD and CMOS components, higher requirements are put forward for the high imaging quality and miniaturization of the corresponding optical imaging lenses, and it is expected that the optical imaging lenses can have richer optical performance and flexible assembly performance.

[0004] In order to meet the imaging and usage requirements, an optical imaging lens is needed that can take into account both high imaging quality and large back focus. Summary of the invention

[0005] The present application provides an optical imaging lens that is 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] 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 with optical power; a second lens with optical power, whose object side surface may be convex and whose image side surface may be concave; a third lens with optical power; a fourth lens with optical power; a fifth lens with optical power; a sixth lens with positive optical power, whose object side surface may be convex and whose image side surface may be convex; a seventh lens with negative optical power, whose object side surface may be concave and whose image side surface may be concave; a distance FFL from the image side surface of the seventh lens to the imaging surface of the optical imaging lens on the optical axis and a distance TTL from the object side surface of the first lens to the imaging surface on the optical axis may satisfy FFL / TTL>0.3.

[0007] In one embodiment, at least one aspherical mirror surface is provided from the object side surface of the first lens to the image side surface of the seventh lens.

[0008] In one embodiment, the total effective focal length f of the optical imaging lens may satisfy 14.8 mm<f<17.3 mm.

[0009] In one embodiment, an effective focal length f6 of the sixth lens, a curvature radius R11 of the object-side surface of the sixth lens, and a curvature radius R12 of the image-side surface of the sixth lens may satisfy 5.5<f6 / (R11+R12)<7.4.

[0010] In one embodiment, an effective focal length f7 of the seventh lens, a curvature radius R13 of the object-side surface of the seventh lens, and a curvature radius R14 of the image-side surface of the seventh lens may satisfy -1.7<f7 / (R13+R14)<-1.2.

[0011] In one embodiment, the total effective focal length f of the optical imaging lens, the effective focal length f1 of the first lens, and the effective focal length f2 of the second lens may satisfy 0.4<f / (f1-f2)<0.6.

[0012] In one embodiment, the maximum field of view FOV of the optical imaging lens may satisfy 66°<FOV<76°.

[0013] In one embodiment, 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 may satisfy 0.5<R4 / R3<0.8.

[0014] In one embodiment, a spacing distance T23 between the second lens and the third lens on the optical axis, a center thickness CT3 of the third lens on the optical axis, and a spacing distance T34 between the third lens and the fourth lens on the optical axis may satisfy 0.6<(T23+CT3) / T34<1.1.

[0015] In one embodiment, the combined focal length f123 of the first lens, the second lens, and the third lens and the combined focal length f4567 of the fourth lens, the fifth lens, the sixth lens, and the seventh lens may satisfy 0.1<f123 / f4567<0.9.

[0016] In one embodiment, an on-axis distance SAG21 between the intersection of the object side surface of the second lens and the optical axis to the effective radius vertex of the object side surface of the second lens, an on-axis distance SAG22 between the intersection of the image side surface of the second lens and the optical axis to the effective radius vertex of the image side surface of the second lens, and a center thickness CT2 of the second lens on the optical axis may satisfy 1.8<(SAG21+SAG22) / CT2<3.8.

[0017] In one embodiment, the on-axis distance SAG61 between the intersection of the object side surface of the sixth lens and the optical axis to the effective radius vertex of the object side surface of the sixth lens, the on-axis distance SAG62 between the intersection of the image side surface of the sixth lens and the optical axis to the effective radius vertex of the image side surface of the sixth lens, the on-axis distance SAG51 between the intersection of the object side surface of the fifth lens and the optical axis to the effective radius vertex of the object side surface of the fifth lens, and the on-axis distance SAG52 between the intersection of the image side surface of the fifth lens and the optical axis to the effective radius vertex of the image side surface of the fifth lens may satisfy 0.2<(SAG61+SAG62) / (SAG51+SAG52)<0.7.

[0018] In one embodiment, a distance FFL on the optical axis from the image side surface of the seventh lens to the imaging plane and an axial distance TTL from the object side surface of the first lens to the imaging plane may satisfy 0.4<FFL / TTL<0.6.

[0019] In the second aspect, the present application also provides an optical imaging lens, which includes, in order from the object side to the image side along the optical axis: a first lens with optical power; a second lens with optical power, whose object side surface is convex and whose image side surface is concave; a third lens with optical power; a fourth lens with optical power; a fifth lens with optical power; a sixth lens with positive optical power, whose object side surface is convex and whose image side surface is convex; a seventh lens with negative optical power, whose object side surface is concave and whose image side surface is concave; the combined focal length f123 of the first lens, the second lens and the third lens and the combined focal length f4567 of the fourth lens, the fifth lens, the sixth lens and the seventh lens satisfy 0.1<f123 / f4567<0.9.

[0020] The present application adopts seven lenses, and through the reasonable allocation of the optical focal length, surface shape, center thickness of each lens and axial spacing between each lens, the above-mentioned optical imaging lens has at least one beneficial effect of high imaging quality, large back focus, easy processing, easy assembly and flexible application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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:

[0022] Figure 1 A schematic structural diagram of an optical imaging lens according to Embodiment 1 of the present application is shown; 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;

[0023] Figure 3 A schematic structural diagram of an optical imaging lens according to Embodiment 2 of the present application is shown; 4A to 4DThe axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 2 are respectively shown;

[0024] Figure 5 A schematic structural diagram of an optical imaging lens according to Embodiment 3 of the present application is shown; 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;

[0025] Figure 7 A schematic structural diagram of an optical imaging lens according to Embodiment 4 of the present application is shown; 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;

[0026] Fig. 9 A schematic structural diagram of an optical imaging lens according to Embodiment 5 of the present application is shown; FIG. 10A to FIG. 10D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 5 are respectively shown;

[0027] Fig.11 A schematic structural diagram of an optical imaging lens according to Embodiment 6 of the present application is shown; FIG. 12A to FIG. 12D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 6 are respectively shown;

[0028] Fig.13 A schematic structural diagram of an optical imaging lens according to Embodiment 7 of the present application is shown; FIG. 14A to FIG. 14D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 7 are respectively shown;

[0029] Fig.15 A schematic structural diagram of an optical imaging lens according to Embodiment 8 of the present application is shown; FIG. 16A to FIG. 16D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 8 are respectively shown. DETAILED DESCRIPTION

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] The features, principles and other aspects of the present application are described in detail below.

[0038] The optical imaging lens according to the exemplary embodiment of the present application may include, for example, seven lenses with optical power, namely, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The seven lenses are arranged in sequence from the object side to the image side along the optical axis. Among the first lens to the seventh lens, any two adjacent lenses may have an air gap between them.

[0039] In an exemplary embodiment, the first lens has positive or negative power; the second lens has positive or negative power, and its object side surface may be convex and its image side surface may be concave; the third lens has positive or negative power; the fourth lens has positive or negative power; the fifth lens has positive or negative power; the sixth lens may have positive power, and its object side surface may be convex and its image side surface may be convex; the seventh lens may have negative power, and its object side surface may be concave and its image side surface may be concave. By reasonably controlling the positive and negative distribution of the power of each component of the lens and the surface curvature of the lens, the low-order aberrations of the lens can be effectively balanced and controlled. When the object side surface of the second lens is convex and the image side surface is concave, it is beneficial to balance the off-axis aberration and the on-axis aberration; when the sixth lens has positive optical power and its object side surface is convex and the image side surface is convex, it is beneficial to converge the light at the edge of the field of view; when the seventh lens has negative optical power and its object side surface is concave and the image side surface is concave, it is beneficial to improve the field curvature and astigmatism of the optical imaging lens.

[0040] In an exemplary embodiment, the optical imaging lens may further include at least one aperture. The aperture may be disposed at an appropriate position as required, for example, between the object side and the first 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.

[0041] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula FFL / TTL>0.3, wherein FFL is the distance from the image side surface of the seventh lens to the imaging surface of the optical imaging lens on the optical axis, and TTL is the axial distance from the object side surface of the first lens to the imaging surface on the optical axis. By controlling the ratio of the back focus of the optical imaging lens to the total optical length, optical accessories can be placed on the image side direction of the lens of the optical imaging lens.

[0042] Specifically, the optical imaging lens of the present application can satisfy the conditional expression 0.4<FFL / TTL<0.6, wherein, by constraining the ratio of the back focus of the optical imaging lens to the total optical length within a certain range, a prism can be better placed behind the lens group.

[0043] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 14.8mm<f<17.3mm, where f is the total effective focal length of the optical imaging lens. Furthermore, f satisfies 14.90mm<f<17.24mm. By constraining the range of the total effective focal length of the optical imaging lens, the optical imaging lens can obtain a greater depth of field and richer imaging details.

[0044] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 5.5<f6 / (R11+R12)<7.4, wherein f6 is the effective focal length of the sixth lens, R11 is the radius of curvature of the object side surface of the sixth lens, and R12 is the radius of curvature of the image side surface of the sixth lens. By constraining the ratio of the effective focal length of the sixth lens to the sum of the radius of curvature of the two mirror surfaces of the sixth lens within a certain range, the astigmatism of the optical imaging lens can be reduced, so that the optical imaging lens has good imaging quality.

[0045] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula -1.7<f7 / (R13+R14)<-1.2, wherein f7 is the effective focal length of the seventh lens, R13 is the radius of curvature of the object side surface of the seventh lens, and R14 is the radius of curvature of the image side surface of the seventh lens. Furthermore, f7, R13, and R14 may satisfy -1.63<f7 / (R13+R14)<-1.23. By constraining the ratio of the effective focal length of the seventh lens to the sum of the radii of curvature of the two mirror surfaces of the seventh lens within a certain range, the aberration and sensitivity of the off-axis field of view of the optical imaging lens can be reduced, thereby improving the imaging quality, and it is also beneficial to the assembly of the lens.

[0046] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 0.4<f / (f1-f2)<0.6, where f is the total effective focal length of the optical imaging lens, f1 is the effective focal length of the first lens, and f2 is the effective focal length of the second lens. Furthermore, f, f1, and f2 may satisfy 0.43<f / (f1-f2)<0.55. By constraining the ratio of the total effective focal length of the optical imaging lens to the difference between the effective focal lengths of the first lens and the second lens within a certain range, the aberration of the on-axis field of view and the aberration of the internal field of view can be reduced, thereby improving the imaging quality of the optical imaging lens.

[0047] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 66°<FOV<76°, where FOV is the maximum field of view of the optical imaging lens. By constraining the maximum field of view of the optical imaging lens within a certain range, the optical imaging lens can obtain a wider imaging field of view and enrich the imaging content.

[0048] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 0.5<R4 / R3<0.8, wherein R4 is the radius of curvature of the image side surface of the second lens, and R3 is the radius of curvature of the object side surface of the second lens. By constraining the ratio of the radius of curvature of the image side surface of the second lens to the radius of curvature of the object side surface of the second lens within a certain range, the coma of the optical imaging lens may be reduced and the imaging quality may be improved.

[0049] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 0.6<(T23+CT3) / T34<1.1, wherein T23 is the air interval between the second lens and the third lens on the optical axis, CT3 is the center thickness of the third lens on the optical axis, and T34 is the air interval between the third lens and the fourth lens on the optical axis. By matching the center thickness of the third lens and the air intervals on both sides thereof, the sensitivity of the second lens and the third lens can be reduced, which is beneficial to the processing and assembly of the lens.

[0050] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 0.1<f123 / f4567<0.9, wherein f123 is the composite focal length of the first lens, the second lens and the third lens, and f4567 is the composite focal length of the fourth lens, the fifth lens, the sixth lens and the seventh lens. By constraining the ratio of the composite focal length of the first lens, the second lens and the third lens to the composite focal length of the fourth lens, the fifth lens, the sixth lens and the seventh lens to be within a certain range, the optical power distribution between the lenses can be improved, and the processing and molding of the lenses can be facilitated.

[0051] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 1.8<(SAG21+SAG22) / CT2<3.8, wherein SAG21 is the on-axis distance between the intersection of the object side surface of the second lens and the optical axis to the vertex of the effective radius of the object side surface of the second lens, SAG22 is the on-axis distance between the intersection of the image side surface of the second lens and the optical axis to the vertex of the effective radius of the image side surface of the second lens, and CT2 is the center thickness of the second lens on the optical axis. By constraining the ratio of the sum of the sagittal heights of the object side surface and the image side surface of the second lens to the center thickness of the second lens on the optical axis within a certain range, the optical power and shape of the second lens can be better controlled, which is beneficial to the optical power distribution of the second lens and is beneficial to the balance of aberrations.

[0052] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 0.2<(SAG61+SAG62) / (SAG51+SAG52)<0.7, wherein SAG61 is the on-axis distance between the intersection of the object side surface of the sixth lens and the optical axis to the effective radius vertex of the object side surface of the sixth lens, SAG62 is the on-axis distance between the intersection of the image side surface of the sixth lens and the optical axis to the effective radius vertex of the image side surface of the sixth lens, SAG51 is the on-axis distance between the intersection of the object side surface of the fifth lens and the optical axis to the effective radius vertex of the object side surface of the fifth lens, and SAG52 is the on-axis distance between the intersection of the image side surface of the fifth lens and the optical axis to the effective radius vertex of the image side surface of the fifth lens. By constraining the ratio of the sum of the sag heights of the object side surface and the image side surface of the sixth lens to the sum of the sag heights of the object side surface and the image side surface of the fifth lens within a certain range, it is beneficial to improve aberrations such as distortion field curvature of the off-axis field of view and improve imaging quality.

[0053] The optical imaging lens according to the above-mentioned embodiment of the present application may use multiple lenses, such as the seven lenses mentioned above. By reasonably allocating the focal length, surface shape, center thickness of each lens, and axial spacing between lenses, etc., the volume of the imaging lens can be effectively reduced, the sensitivity 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 and applicable to portable electronic products. At the same time, the optical imaging lens of the present application also has excellent optical properties such as large back focus and high imaging quality.

[0054] In the embodiment of the present application, at least one of the mirror surfaces of each lens is an aspherical mirror surface, that is, at least one of 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 the 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, 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 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 and the third lens are both aspherical mirror surfaces. Optionally, the object side surface and the image side surface of each lens in the fourth lens, the fifth lens, the sixth lens and the seventh lens are both aspherical mirror surfaces. Optionally, the object side surface and the image side surface of each lens of the first to seventh lenses are aspherical mirror surfaces.

[0055] 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 seven lenses are described as an example in the embodiments, the optical imaging lens is not limited to including seven lenses. If necessary, the optical imaging lens may also include other numbers of lenses.

[0056] Specific embodiments of the optical imaging lens applicable to the above-mentioned embodiments are further described below with reference to the accompanying drawings.

[0057] Example 1

[0058] The following reference Figures 1 to 2D An optical imaging lens according to Embodiment 1 of the present application is described. Figure 1 A schematic structural diagram of an optical imaging lens according to Embodiment 1 of the present application is shown.

[0059] like Figure 1 As shown, the optical imaging lens includes, in order from the object side to the image side along the optical axis: 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 and a seventh lens E7.

[0060] The first lens E1 has positive power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has negative power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has negative power, and its object side surface S5 is concave, and its image side surface S6 is concave. The fourth lens E4 has positive power, and its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has negative power, and its object side surface S9 is concave, and its image side surface S10 is convex. The sixth lens E6 has positive power, and its object side surface S11 is convex, and its image side surface S12 is convex. The seventh lens E7 has negative power, and its object side surface S13 is concave, and its image side surface S14 is concave. The optical imaging lens has an imaging surface S15, and the light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0061] Table 1 shows the basic parameters of the optical imaging lens of Example 1, wherein the units of the radius of curvature, thickness / distance and focal length are all millimeters (mm).

[0062]

[0063] Table 1

[0064] In Example 1, the total effective focal length f of the optical imaging lens is 14.93 mm, the axial distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S15 is 16.01 mm, and the half of the diagonal length of the effective pixel area on the imaging surface S15 ImgH is 11.68 mm.

[0065] 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, and the surface shape x of each aspherical lens can be defined by but not limited to the following aspherical surface formula:

[0066]

[0067] 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 , A 18 and A 20 .

[0068] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -2.6638E-04 4.8441E-04 -6.3508E-04 5.9495E-04 -3.2211E-04 1.0498E-04 -1.9299E-05 1.8104E-06 -5.8944E-08 S2 -8.1330E-03 1.7001E-02 -1.9574E-02 1.3288E-02 -5.8188E-03 1.6963E-03 -3.1792E-04 3.4585E-05 -1.6521E-06 S3 -6.7858E-03 1.6238E-02 -1.8001E-02 1.1868E-02 -5.1286E-03 1.4988E-03 -2.8592E-04 3.1960E-05 -1.5933E-06 S4 -1.4511E-04 2.6887E-03 -1.6370E-03 5.8790E-04 -1.2184E-04 4.1113E-05 -1.5143E-05 2.8428E-06 -2.1161E-07 S5 -1.7005E-02 -9.2176E-04 2.6893E-03 -3.0133E-03 2.1235E-03 -9.2652E-04 2.4706E-04 -3.6671E-05 2.3224E-06 S6 -1.5948E-02 1.3516E-04 8.9287E-04 -6.9069E-04 3.6904E-04 -1.2316E-04 2.5742E-05 -3.0592E-06 1.5477E-07 S7 -4.6688E-03 2.6320E-04 -2.4265E-04 8.2145E-05 -1.5713E-05 2.4597E-06 -2.6177E-07 1.5166E-08 -3.5805E-10 S8 -5.8863E-03 -9.2024E-04 4.9786E-04 -2.6224E-04 6.5549E-05 -8.5908E-06 6.1415E-07 -2.1895E-08 2.8329E-10 S9 2.3127E-03 -3.8028E-03 1.7215E-03 -4.9956E-04 8.7259E-05 -9.2460E-06 5.7947E-07 -1.9593E-08 2.7293E-10 S10 -2.0735E-02 7.2216E-04 1.0727E-03 -2.8771E-04 3.8620E-05 -3.1437E-06 1.5661E-07 -4.3860E-09 5.2743E-11 S11 -2.5664E-02 1.5082E-03 -6.0728E-05 2.5253E-05 -4.3560E-06 3.5389E-07 -1.5812E-08 3.8204E-10 -3.9448E-12 S12 1.0343E-02 -2.3605E-03 3.6381E-04 -2.3336E-05 -3.1320E-07 1.3748E-07 -8.4620E-09 2.3042E-10 -2.4450E-12 S13 6.8389E-03 -7.1464E-04 2.2737E-04 -3.0706E-05 2.1409E-06 -8.4832E-08 1.8779E-09 -2.0220E-11 6.4621E-14 S14 -8.7000E-03 4.7660E-04 -7.3908E-06 -1.3065E-06 1.3027E-07 -6.0319E-09 1.5733E-10 -2.2406E-12 1.3690E-14

[0069] Table 2

[0070] Figure 2A The axial chromatic aberration curve of the optical imaging lens of Example 1 is shown, which indicates the deviation of the convergent focus of light of different wavelengths after passing through 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.

[0071] Example 2

[0072] The following reference Figures 3 to 4D The optical imaging lens according to Embodiment 2 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Figure 3A schematic structural diagram of an optical imaging lens according to Embodiment 2 of the present application is shown.

[0073] like Figure 3 As shown, the optical imaging lens includes, in order from the object side to the image side along the optical axis: 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 and a seventh lens E7.

[0074] 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 negative focal power, and its object side surface S5 is convex, and its image side surface S6 is concave. The fourth lens E4 has positive focal power, and its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has negative focal power, and its object side surface S9 is concave, and its image side surface S10 is convex. The sixth lens E6 has positive focal power, and its object side surface S11 is convex, 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 concave. The optical imaging lens has an imaging surface S15, and the light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0075] In Example 2, the total effective focal length f of the optical imaging lens is 15.98 mm, the axial distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S15 is 17.06 mm, and the half diagonal length ImgH of the effective pixel area on the imaging surface S15 is 11.88 mm.

[0076] Table 3 shows the basic parameters of the optical imaging lens of Example 2, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 4 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 2, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0077]

[0078] Table 3

[0079] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -1.0688E-04 6.6290E-04 -7.6256E-04 6.3091E-04 -3.0340E-04 8.9610E-05 -1.5682E-05 1.4958E-06 -5.8707E-08 S2 -9.7082E-03 1.9793E-02 -2.1189E-02 1.3860E-02 -5.9585E-03 1.7075E-03 -3.1242E-04 3.2881E-05 -1.5097E-06 S3 -7.5039E-03 1.8983E-02 -2.0368E-02 1.3438E-02 -5.9612E-03 1.7846E-03 -3.4250E-04 3.7754E-05 -1.8162E-06 S4 6.6380E-04 2.9810E-03 -2.3961E-03 1.4291E-03 -6.8854E-04 2.5327E-04 -5.9409E-05 7.7101E-06 -4.2748E-07 S5 -1.5748E-02 1.7371E-04 5.3548E-04 -6.0626E-04 4.1780E-04 -1.7267E-04 4.3974E-05 -6.2080E-06 3.7111E-07 S6 -1.5091E-02 7.1272E-04 -6.1703E-05 5.5744E-05 -1.8684E-05 4.2810E-06 -2.5823E-07 -5.0193E-08 4.8177E-09 S7 -4.8970E-03 3.0665E-04 -3.0037E-04 1.2090E-04 -2.7837E-05 4.4067E-06 -4.2903E-07 2.2528E-08 -4.8897E-10 S8 -4.1905E-03 -1.3942E-03 3.1283E-04 -1.0144E-04 2.1512E-05 -2.3659E-06 1.2376E-07 -1.4994E-09 -6.3660E-11 S9 3.4958E-03 -3.1913E-03 1.0592E-03 -2.6215E-04 4.1159E-05 -3.9217E-06 2.1595E-07 -6.1134E-09 6.4458E-11 S10 -2.3618E-02 3.2652E-03 1.4532E-04 -1.1313E-04 1.9414E-05 -1.8371E-06 1.0153E-07 -3.0476E-09 3.8286E-11 S11 -2.7226E-02 2.2706E-03 -1.4843E-04 1.9880E-05 -2.1997E-06 1.3444E-07 -4.5652E-09 8.3501E-11 -6.6015E-13 S12 1.1472E-02 -2.9885E-03 5.5973E-04 -5.7977E-05 3.4717E-06 -1.2160E-07 2.3224E-09 -1.8692E-11 1.4588E-15 S13 8.1464E-03 -1.2037E-03 3.1534E-04 -3.9161E-05 2.6188E-06 -1.0180E-07 2.2737E-09 -2.6239E-11 1.1202E-13 S14 -1.0171E-02 8.2851E-04 -6.0206E-05 3.6550E-06 -1.7450E-07 6.0780E-09 -1.4048E-10 1.8741E-12 -1.0798E-14

[0080] Table 4

[0081] Figure 4A The axial chromatic aberration curve of the optical imaging lens of Example 2 is shown, which indicates the deviation of the convergent focus of light of different wavelengths after passing through 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 4CThe 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. 4A to 4D It can be seen that the optical imaging lens provided in Example 2 can achieve good imaging quality.

[0082] Example 3

[0083] 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.

[0084] like Figure 5 As shown, the optical imaging lens includes, in order from the object side to the image side along the optical axis: 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 and a seventh lens E7.

[0085] 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 negative focal power, and its object side surface S5 is concave, and its image side surface S6 is convex. The fourth lens E4 has positive focal power, and its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has negative focal power, and its object side surface S9 is concave, and its image side surface S10 is convex. The sixth lens E6 has positive focal power, and its object side surface S11 is convex, 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 concave. The optical imaging lens has an imaging surface S15, and the light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0086] In Example 3, the total effective focal length f of the optical imaging lens is 15.96 mm, the axial distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S15 is 17.00 mm, and the half diagonal length ImgH of the effective pixel area on the imaging surface S15 is 11.88 mm.

[0087] Table 5 shows the basic parameters of the optical imaging lens of Example 3, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 6 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 3, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0088]

[0089] Table 5

[0090]

[0091]

[0092] Table 6

[0093] Fig. 6A The axial chromatic aberration curve of the optical imaging lens of Example 3 is shown, which indicates the deviation of the convergent focus of light of different wavelengths after passing through 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.

[0094] Example 4

[0095] The following reference Figures 7 to 8D An optical imaging lens according to Embodiment 4 of the present application is described. Figure 7 A schematic structural diagram of an optical imaging lens according to Embodiment 4 of the present application is shown.

[0096] like Figure 7 As shown, the optical imaging lens includes, in order from the object side to the image side along the optical axis: 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 and a seventh lens E7.

[0097] 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 negative focal power, and its object side surface S5 is concave, and its image side surface S6 is convex. The fourth lens E4 has positive focal power, and its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has positive focal power, and its object side surface S9 is concave, and its image side surface S10 is convex. The sixth lens E6 has positive focal power, and its object side surface S11 is convex, 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 concave. The optical imaging lens has an imaging surface S15, and the light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0098] In Example 4, the total effective focal length f of the optical imaging lens is 16.23 mm, the axial distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S15 is 17.30 mm, and the half diagonal length ImgH of the effective pixel area on the imaging surface S15 is 11.88 mm.

[0099] Table 7 shows the basic parameters of the optical imaging lens of Example 4, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 8 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 4, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0100]

[0101]

[0102] Table 7

[0103] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 6.7929E-05 4.5091E-04 -4.7065E-04 3.7997E-04 -1.7324E-04 4.8224E-05 -7.8772E-06 6.9481E-07 -2.4621E-08 S2 -9.0634E-03 1.6943E-02 -1.5867E-02 8.8678E-03 -3.2419E-03 7.9942E-04 -1.2794E-04 1.1943E-05 -4.9048E-07 S3 -6.8866E-03 1.6202E-02 -1.4792E-02 8.0785E-03 -2.9648E-03 7.5041E-04 -1.2478E-04 1.2108E-05 -5.1922E-07 S4 7.0879E-04 2.6093E-03 -1.2550E-03 1.9781E-04 8.2390E-05 -4.9450E-05 1.3280E-05 -1.9703E-06 1.1891E-07 S5 -1.6067E-02 1.0736E-03 -7.9674E-04 7.2117E-04 -4.0473E-04 1.4405E-04 -3.0471E-05 3.5808E-06 -1.8330E-07 S6 -1.5165E-02 1.3703E-03 -7.6131E-04 5.8035E-04 -2.7150E-04 8.0883E-05 -1.4601E-05 1.4680E-06 -6.4975E-08 S7 -4.8903E-03 4.5804E-05 -1.0703E-04 4.7785E-05 -9.4959E-06 1.3822E-06 -1.2792E-07 6.3584E-09 -1.2944E-10 S8 -2.9318E-03 -2.2163E-03 6.2415E-04 -1.6640E-04 2.9598E-05 -2.9957E-06 1.5813E-07 -3.0848E-09 -1.8274E-11 S9 4.2164E-03 -3.7325E-03 1.2168E-03 -2.8170E-04 4.1628E-05 -3.7619E-06 1.9587E-07 -5.1557E-09 4.8134E-11 S10 -2.3249E-02 3.1645E-03 1.0187E-04 -9.1314E-05 1.5446E-05 -1.4483E-06 7.9561E-08 -2.3674E-09 2.9275E-11 S11 -2.5998E-02 2.0350E-03 -7.7307E-05 3.2475E-06 -3.0195E-08 -2.9109E-08 2.6431E-09 -8.9652E-11 1.0879E-12 S12 1.1505E-02 -3.0238E-03 5.7341E-04 -6.0964E-05 3.8478E-06 -1.4909E-07 3.4725E-09 -4.4170E-11 2.3146E-13 S13 8.5673E-03 -1.4332E-03 3.7329E-04 -4.7497E-05 3.3673E-06 -1.4447E-07 3.7710E-09 -5.5653E-11 3.5908E-13 S14 -1.0617E-02 9.3745E-04 -7.5586E-05 4.9723E-06 -2.4771E-07 8.6980E-09 -1.9810E-10 2.5755E-12 -1.4375E-14

[0104] Table 8

[0105] Fig. 8A The axial chromatic aberration curve of the optical imaging lens of Example 4 is shown, which indicates the deviation of the convergent focus of light of different wavelengths after passing through 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.

[0106] Example 5

[0107] 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.

[0108] like Fig. 9 As shown, the optical imaging lens includes, in order from the object side to the image side along the optical axis: 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 and a seventh lens E7.

[0109] 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 negative focal power, and its object side surface S5 is concave, and its image side surface S6 is concave. The fourth lens E4 has positive focal power, and its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has positive focal power, and its object side surface S9 is concave, and its image side surface S10 is convex. The sixth lens E6 has positive focal power, and its object side surface S11 is convex, 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 concave. The optical imaging lens has an imaging surface S15, and the light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0110] In Example 5, the total effective focal length f of the optical imaging lens is 16.09 mm, the axial distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S15 is 17.18 mm, and the half of the diagonal length of the effective pixel area on the imaging surface S15 ImgH is 11.88 mm.

[0111] Table 9 shows the basic parameters of the optical imaging lens of Example 5, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 10 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 5, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0112]

[0113] Table 9

[0114] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 1.3955E-04 3.7241E-04 -3.8045E-04 3.2205E-04 -1.5282E-04 4.4349E-05 -7.5944E-06 7.0921E-07 -2.7227E-08 S2 -9.2303E-03 1.5575E-02 -1.3120E-02 6.4512E-03 -2.0101E-03 4.1371E-04 -5.4914E-05 4.2698E-06 -1.4738E-07 S3 -6.7811E-03 1.4698E-02 -1.2132E-02 5.7926E-03 -1.7845E-03 3.7123E-04 -5.0792E-05 4.0819E-06 -1.4680E-07 S4 1.0326E-03 2.2499E-03 -9.1031E-04 -4.5781E-05 2.1917E-04 -1.0115E-04 2.4943E-05 -3.3990E-06 1.9398E-07 S5 -1.5546E-02 9.3289E-04 -7.1713E-04 6.8118E-04 -3.9621E-04 1.4569E-04 -3.1846E-05 3.8672E-06 -2.0491E-07 S6 -1.4658E-02 1.2645E-03 -7.7035E-04 6.1734E-04 -2.9866E-04 9.1365E-05 -1.6884E-05 1.7323E-06 -7.7753E-08 S7 -4.8976E-03 8.6079E-05 -1.2355E-04 5.1707E-05 -1.0370E-05 1.5150E-06 -1.3900E-07 6.8136E-09 -1.3654E-10 S8 -3.3769E-03 -1.7476E-03 4.5634E-04 -1.2176E-04 2.0996E-05 -1.9374E-06 8.1086E-08 -1.0575E-10 -6.4516E-11 S9 3.3822E-03 -3.0679E-03 9.7204E-04 -2.2023E-04 3.1340E-05 -2.6893E-06 1.3062E-07 -3.0828E-09 2.2409E-11 S10 -2.2949E-02 3.2616E-03 -7.0504E-06 -5.9439E-05 1.0490E-05 -9.8965E-07 5.4369E-08 -1.6125E-09 1.9820E-11 S11 -2.5393E-02 2.0686E-03 -1.2023E-04 1.3009E-05 -1.2570E-06 6.4184E-08 -1.5602E-09 1.2931E-11 4.6526E-14 S12 1.1377E-02 -2.9793E-03 5.6616E-04 -6.0695E-05 3.8991E-06 -1.5581E-07 3.8142E-09 -5.2454E-11 3.1053E-13 S13 8.6880E-03 -1.5021E-03 3.8499E-04 -4.8565E-05 3.4292E-06 -1.4685E-07 3.8290E-09 -5.6383E-11 3.6180E-13 S14 -1.0463E-02 9.3585E-04 -7.7254E-05 5.1623E-06 -2.5797E-07 8.9868E-09 -2.0180E-10 2.5841E-12 -1.4247E-14

[0115] Table 10

[0116] Fig. 10A The axial chromatic aberration curve of the optical imaging lens of Example 5 is shown, which indicates the deviation of the convergent focus of light of different wavelengths after passing through the lens. Fig. 10B The 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.

[0117] Example 6

[0118] The following reference Figures 11 to 12D An optical imaging lens according to Embodiment 6 of the present application is described. Fig.11 A schematic structural diagram of an optical imaging lens according to Example 6 of the present application is shown.

[0119] like Fig.11 As shown, the optical imaging lens includes, in order from the object side to the image side along the optical axis: 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 and a seventh lens E7.

[0120] 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 positive focal power, and its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has positive focal power, and its object side surface S9 is concave, and its image side surface S10 is convex. The sixth lens E6 has positive focal power, and its object side surface S11 is convex, 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 concave. The optical imaging lens has an imaging surface S15, and the light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0121] In Example 6, the total effective focal length f of the optical imaging lens is 17.21 mm, the axial distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S15 is 18.08 mm, and the half of the diagonal length of the effective pixel area on the imaging surface S15 ImgH is 11.88 mm.

[0122] Table 11 shows the basic parameters of the optical imaging lens of Example 6, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 12 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 6, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0123]

[0124] Table 11

[0125]

[0126]

[0127] Table 12

[0128] Fig. 12AThe axial chromatic aberration curve of the optical imaging lens of Example 6 is shown, which indicates the deviation of the convergent focus of light of different wavelengths after passing through the lens. Fig. 12B The astigmatism curve of the optical imaging lens of Example 6 is shown, which represents the meridional image curvature and the sagittal image curvature. Fig. 12C The distortion curve of the optical imaging lens of Example 6 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig.12D The magnification chromatic aberration curve of the optical imaging lens of Example 6 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 12A to FIG. 12D It can be seen that the optical imaging lens provided in Example 6 can achieve good imaging quality.

[0129] Example 7

[0130] The following reference Figures 13 to 14D An optical imaging lens according to Embodiment 7 of the present application is described. Fig.13 A schematic structural diagram of an optical imaging lens according to Example 7 of the present application is shown.

[0131] like Fig.13 As shown, the optical imaging lens includes, in order from the object side to the image side along the optical axis: 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 and a seventh lens E7.

[0132] 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 convex. The fifth lens E5 has positive focal power, and its object side surface S9 is concave, and its image side surface S10 is convex. The sixth lens E6 has positive focal power, and its object side surface S11 is convex, 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 concave. The optical imaging lens has an imaging surface S15, and the light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0133] In Example 7, the total effective focal length f of the optical imaging lens is 16.99 mm, the axial distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S15 is 17.89 mm, and the half diagonal length ImgH of the effective pixel area on the imaging surface S15 is 11.88 mm.

[0134] Table 13 shows the basic parameters of the optical imaging lens of Example 7, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 14 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 7, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0135]

[0136]

[0137] Table 13

[0138] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 3.2234E-04 2.2646E-04 -2.1047E-04 1.4842E-04 -6.0578E-05 1.5261E-05 -2.3179E-06 1.9580E-07 -7.0724E-09 S2 -4.6649E-03 7.1120E-03 -4.4675E-03 1.1487E-03 4.1871E-05 -1.0177E-04 2.6644E-05 -3.1051E-06 1.4130E-07 S3 -2.8374E-03 7.0889E-03 -4.4482E-03 1.2908E-03 -8.2459E-05 -5.4700E-05 1.7228E-05 -2.1253E-06 9.9025E-08 S4 4.1439E-04 1.5637E-03 -5.1053E-04 2.0026E-05 7.6052E-05 -3.5912E-05 8.3163E-06 -9.9652E-07 4.8460E-08 S5 -1.1948E-02 2.3844E-04 1.1280E-04 -1.0851E-04 5.0962E-05 -1.4997E-05 3.0440E-06 -3.7319E-07 1.9506E-08 S6 -1.0156E-02 5.0635E-04 -1.3352E-04 1.0816E-04 -5.2188E-05 1.5387E-05 -2.6298E-06 2.3835E-07 -9.1083E-09 S7 -5.2070E-03 5.5124E-04 -2.1375E-04 6.0377E-05 -1.1058E-05 1.4533E-06 -1.1446E-07 4.6478E-09 -7.3593E-11 S8 -7.2754E-03 -9.0690E-05 -9.8068E-05 2.3539E-05 -3.6659E-06 6.0369E-07 -6.8837E-08 4.3174E-09 -1.1039E-10 S9 2.3256E-03 -1.2003E-03 1.5957E-04 -1.0402E-05 -1.4348E-06 4.1883E-07 -4.2270E-08 2.0067E-09 -3.7070E-11 S10 -2.2255E-02 4.0884E-03 -4.2929E-04 4.0708E-05 -3.3923E-06 1.9298E-07 -6.4152E-09 1.0885E-10 -6.9288E-13 S11 -2.5940E-02 2.1914E-03 -1.4990E-04 1.8931E-05 -2.0107E-06 1.2196E-07 -4.1261E-09 7.3469E-11 -5.3885E-13 S12 1.1417E-02 -3.1022E-03 5.9914E-04 -6.5690E-05 4.3536E-06 -1.8182E-07 4.7341E-09 -7.0758E-11 4.6603E-13 S13 8.3331E-03 -1.3893E-03 3.3432E-04 -3.9768E-05 2.6191E-06 -1.0312E-07 2.4324E-09 -3.1803E-11 1.7691E-13 S14 -1.0044E-02 8.4292E-04 -6.5596E-05 4.1198E-06 -1.9474E-07 6.4317E-09 -1.3560E-10 1.6057E-12 -8.0632E-15

[0139] Table 14

[0140] Fig.14A The axial chromatic aberration curve of the optical imaging lens of Example 7 is shown, which indicates the deviation of the convergent focus of light of different wavelengths after passing through the lens. Fig. 14B The astigmatism curve of the optical imaging lens of Example 7 is shown, which represents the meridional image curvature and the sagittal image curvature. Fig. 14C The distortion curve of the optical imaging lens of Example 7 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig.14D The magnification chromatic aberration curve of the optical imaging lens of Example 7 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 14A to FIG. 14D It can be seen that the optical imaging lens provided in Example 7 can achieve good imaging quality.

[0141] Example 8

[0142] The following reference Figures 15 to 16D An optical imaging lens according to Example 8 of the present application is described. Fig.15 A schematic structural diagram of an optical imaging lens according to Example 8 of the present application is shown.

[0143] like Fig.15 As shown, the optical imaging lens includes, in order from the object side to the image side along the optical axis: 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 and a seventh lens E7.

[0144] 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 convex. The fifth lens E5 has negative focal power, and its object side surface S9 is concave, and its image side surface S10 is convex. The sixth lens E6 has positive focal power, and its object side surface S11 is convex, 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 concave. The optical imaging lens has an imaging surface S15, and the light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0145] In Example 8, the total effective focal length f of the optical imaging lens is 17.04 mm, the axial distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S15 is 17.80 mm, and the half of the diagonal length of the effective pixel area on the imaging surface S15 ImgH is 11.88 mm.

[0146] Table 15 shows the basic parameters of the optical imaging lens of Example 8, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 16 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 8, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0147]

[0148] Table 15

[0149] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 3.3470E-04 2.4729E-04 -2.3758E-04 1.6414E-04 -6.6212E-05 1.6496E-05 -2.4788E-06 2.0717E-07 -7.4000E-09 S2 -3.7409E-03 5.4110E-03 -2.7733E-03 2.0658E-04 3.4352E-04 -1.5657E-04 3.1745E-05 -3.2680E-06 1.3824E-07 S3 -2.1292E-03 5.7312E-03 -3.0112E-03 4.6034E-04 1.9813E-04 -1.1066E-04 2.3614E-05 -2.5102E-06 1.0903E-07 S4 4.1540E-04 1.5754E-03 -4.4999E-04 -4.0339E-05 1.1113E-04 -4.8393E-05 1.1135E-05 -1.3634E-06 6.8703E-08 S5 -1.1730E-02 2.7963E-04 8.6526E-05 -7.3471E-05 2.9844E-05 -6.8622E-06 1.1729E-06 -1.3168E-07 5.8419E-09 S6 -9.9122E-03 5.4744E-04 -1.3991E-04 1.0778E-04 -4.9676E-05 1.4262E-05 -2.3882E-06 2.1228E-07 -7.9963E-09 S7 -5.2061E-03 4.7541E-04 -1.5181E-04 3.6287E-05 -5.4473E-06 6.6307E-07 -5.0899E-08 1.9850E-09 -2.8817E-11 S8 -7.0879E-03 -9.2038E-05 -6.9039E-05 4.2813E-06 1.4623E-06 -1.3804E-07 -5.7180E-09 1.2762E-09 -4.5975E-11 S9 1.8163E-03 -9.3748E-04 1.2185E-04 -1.3274E-05 2.8954E-07 1.6536E-07 -2.3717E-08 1.3108E-09 -2.6346E-11 S10 -2.2818E-02 4.2283E-03 -4.5103E-04 4.3805E-05 -3.7680E-06 2.2365E-07 -7.9150E-09 1.4846E-10 -1.1266E-12 S11 -2.5526E-02 2.1328E-03 -1.4545E-04 1.8305E-05 -1.9301E-06 1.1629E-07 -3.9130E-09 6.9382E-11 -5.0724E-13 S12 1.1390E-02 -3.0739E-03 5.9240E-04 -6.4839E-05 4.2901E-06 -1.7882E-07 4.6438E-09 -6.9136E-11 4.5254E-13 S13 8.3901E-03 -1.4249E-03 3.3728E-04 -3.9646E-05 2.5917E-06 -1.0164E-07 2.3965E-09 -3.1437E-11 1.7620E-13 S14 -9.3100E-03 7.2886E-04 -5.1442E-05 2.8555E-06 -1.1777E-07 3.3684E-09 -6.0238E-11 5.7442E-13 -2.0791E-15

[0150] Table 16

[0151] Fig.16A The axial chromatic aberration curve of the optical imaging lens of Example 8 is shown, which indicates the deviation of the convergent focus of light of different wavelengths after passing through the lens. Fig. 16B The astigmatism curve of the optical imaging lens of Example 8 is shown, which represents the meridional image curvature and the sagittal image curvature. Fig. 16C The distortion curve of the optical imaging lens of Example 8 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig.16D The magnification chromatic aberration curve of the optical imaging lens of Example 8 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 16A to FIG. 16D It can be seen that the optical imaging lens provided in Example 8 can achieve good imaging quality.

[0152] In summary, Examples 1 to 8 respectively satisfy the relationships shown in Table 17.

[0153] Conditional formula\Example 1 2 3 4 5 6 7 8 FFL / TTL 0.52 0.50 0.49 0.50 0.48 0.46 0.46 0.45 f(mm) 14.93 15.98 15.96 16.23 16.09 17.21 16.99 17.04 f6 / (R11+R12) 5.52 6.91 6.23 6.16 7.35 6.94 6.71 6.22 f7 / (R13+R14) -1.34 -1.46 -1.51 -1.56 -1.61 -1.47 -1.37 -1.24 f / (f1-f2) 0.45 0.48 0.49 0.48 0.48 0.54 0.52 0.54 FOV(°) 75.1 71.5 71.6 70.7 71.2 67.6 68.3 68.1 R4 / R3 0.73 0.70 0.69 0.68 0.67 0.55 0.54 0.52 (T23+CT3) / T34 1.06 0.99 0.91 0.86 0.81 0.71 0.71 0.68 f123 / f4567 0.87 0.66 0.57 0.58 0.51 0.23 0.20 0.11 (SAG21+SAG22) / CT2 3.56 3.71 3.60 3.56 3.31 2.02 1.89 1.87 (SAG61+SAG62) / (SAG51+SAG52) 0.59 0.50 0.36 0.31 0.24 0.63 0.62 0.69

[0154] Table 17

[0155] The present application also provides an imaging device, which is provided with an electronic photosensitive element for imaging, and the electronic photosensitive element can be a charge coupled device (CCD) or a complementary metal oxide semiconductor (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 described above.

[0156] 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 protection 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 concept of the present application. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) to form a technical solution.

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; The second lens has a negative optical power, and its object side surface is convex and its image side surface is concave; a third lens having optical power; a fourth lens having optical power, whose object side surface is concave and whose image side surface is convex; a fifth lens having optical power, wherein the object side surface is concave and the image side surface is convex; a sixth lens having positive refractive power, whose object-side surface is convex and whose image-side surface is convex; The seventh lens element has a negative optical power, and its object side surface is concave and its image side surface is concave; The optical imaging lens has seven lenses with optical power; A combined focal length f123 of the first lens, the second lens and the third lens and a combined focal length f4567 of the fourth lens, the fifth lens, the sixth lens and the seventh lens satisfy 0.1<f123 / f4567<0.

9.

2. The optical imaging lens according to claim 1, wherein: The total effective focal length f of the optical imaging lens satisfies 14.90 mm<f<17.24 mm.

3. The optical imaging lens according to claim 1, wherein: An effective focal length f6 of the sixth lens, a curvature radius R11 of the object-side surface of the sixth lens, and a curvature radius R12 of the image-side surface of the sixth lens satisfy 5.5<f6 / (R11+R12)<7.

4.

4. The optical imaging lens according to claim 1, wherein: An effective focal length f7 of the seventh lens, a curvature radius R13 of the object-side surface of the seventh lens, and a curvature radius R14 of the image-side surface of the seventh lens satisfy -1.63<f7 / (R13+R14)<-1.

2.

5. The optical imaging lens according to claim 1, wherein: The total effective focal length f of the optical imaging lens, the effective focal length f1 of the first lens, and the effective focal length f2 of the second lens satisfy 0.4<f / (f1-f2)<0.

55.

6. The optical imaging lens according to claim 1, wherein: The maximum field of view FOV of the optical imaging lens satisfies 67.6°≤FOV≤75.1°.

7. 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 0.5<R4 / R3≤0.

73.

8. The optical imaging lens according to claim 1, wherein: A distance T23 between the second lens and the third lens on the optical axis, a center thickness CT3 of the third lens on the optical axis, and a distance T34 between the third lens and the fourth lens on the optical axis satisfy 0.68≤(T23+CT3) / T34<1.

1.

9. The optical imaging lens according to claim 1, wherein: An on-axis distance SAG21 between the intersection of the object side surface of the second lens and the optical axis to the effective radius vertex of the object side surface of the second lens, an on-axis distance SAG22 between the intersection of the image side surface of the second lens and the optical axis to the effective radius vertex of the image side surface of the second lens, and a center thickness CT2 of the second lens on the optical axis satisfy 1.87≤(SAG21+SAG22) / CT2≤3.

71.

10. The optical imaging lens according to claim 1, wherein: An axial distance SAG61 between the intersection of the object side surface of the sixth lens and the optical axis to the effective radius vertex of the object side surface of the sixth lens, an axial distance SAG62 between the intersection of the image side surface of the sixth lens and the optical axis to the effective radius vertex of the image side surface of the sixth lens, an axial distance SAG51 between the intersection of the object side surface of the fifth lens and the optical axis to the effective radius vertex of the object side surface of the fifth lens, and an axial distance SAG52 between the intersection of the image side surface of the fifth lens and the optical axis to the effective radius vertex of the image side surface of the fifth lens satisfy 0.2<(SAG61+SAG62) / (SAG51+SAG52)<0.

7.

11. The optical imaging lens according to any one of claims 1 to 10, characterized in that: A distance FFL from the image side surface of the seventh lens to the imaging plane on the optical axis and an axial distance TTL from the object side surface of the first lens to the imaging plane satisfy 0.4<FFL / TTL≤0.52.

Images