Optical imaging lens

Abstract

This application discloses an optical imaging lens, which comprises, sequentially 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, and a seventh lens. The first lens has positive optical power; the second lens has optical power and its object side is convex; the third lens has optical power; the fourth lens has negative optical power and both its object side and image side are concave; the fifth lens has optical power; the sixth lens has negative optical power and its image side is concave; and the seventh lens has optical power. The radius of curvature R8 of the image side of the fourth lens and the radius of curvature R12 of the image side of the sixth lens satisfy 1 < R8 / R12 < 2.

Description

[0001] Divisional Application Declaration

[0002] This application is a divisional application of the China Inventive Patent Application No. 201811122945.5, filed on September 26, 2018, entitled "Optical Imaging Lens", which claims priority to the China Inventive Patent Application No. 201810980593.8, filed on August 17, 2018, entitled "Optical Imaging Lens". TECHNICAL FIELD

[0003] The present application relates to an optical imaging lens, and more particularly, to an optical imaging lens comprising seven lenses. BACKGROUND

[0004] In recent years, with the rapid update of portable electronic products such as smart phones, tablet computers and the like, the market has higher and higher requirements for product end imaging lenses. Users hope that they can achieve clear shooting of distant scenes through portable electronic products such as smart phones, and can achieve the effect of highlighting the main body information and blurring the background. This puts forward higher requirements for the imaging lens used with the portable electronic products. In addition to the requirements of miniaturization and high imaging quality, the imaging lens also needs to have the characteristics of long focal length. SUMMARY

[0005] The present application provides an optical imaging lens which can be applied 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] In one aspect, the present application provides an optical imaging lens comprising, 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 and a seventh lens. The first lens can have positive refractive power; the second lens has refractive power, and the object side surface thereof can be convex; the third lens has refractive power; the fourth lens can have negative refractive power, and both the object side surface and the image side surface thereof can be concave; the fifth lens has refractive power; the sixth lens can have negative refractive power, and the image side surface thereof can be concave; and the seventh lens has refractive power. The interval distance T56 of the fifth lens and the sixth lens on the optical axis, the interval distance T12 of the first lens and the second lens on the optical axis, and the interval distance T23 of the second lens and the third lens on the optical axis can satisfy 2 < T56 / (T12+T23) / 5 < 3.

[0007] In one embodiment, the effective focal length f6 of the sixth lens and the effective focal length f1 of the first lens can satisfy -2.5 < f6 / f1 < -1.

[0008] In one embodiment, the curvature radius R1 of the object side surface of the first lens and the curvature radius R3 of the object side surface of the second lens can satisfy 0 < R1 / R3 < 0.5.

[0009] In one embodiment, the radius of curvature R7 of the object side surface of the fourth lens and the radius of curvature R1 of the object side surface of the first lens can satisfy -8.5 < R7 / R1 < -6.

[0010] In one embodiment, the radius of curvature R8 of the image side surface of the fourth lens and the radius of curvature R12 of the image side surface of the sixth lens can satisfy 1 < R8 / R12 < 2.

[0011] In one embodiment, the combined focal length f123 of the first lens, the second lens and the third lens and the effective focal length f3 of the third lens can satisfy 0 < f123 / f3 < 0.5.

[0012] In one embodiment, the on-axis distance SAG42 from the intersection of the image side surface of the fourth lens and the optical axis to the effective radius vertex of the image side surface of the fourth lens and the on-axis distance SAG51 from 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 can satisfy -3 < SAG42 / SAG51 < -0.5.

[0013] In one embodiment, the combined focal length f45 of the fourth lens and the fifth lens and the combined focal length f67 of the sixth lens and the seventh lens can satisfy 0 < f45 / f67 < 0.6.

[0014] In one embodiment, the interval distance T56 of the fifth lens and the sixth lens on the optical axis and the interval distance T67 of the sixth lens and the seventh lens on the optical axis can satisfy 2.5 < T56 / T67 < 3.5.

[0015] In one embodiment, the central thickness CT2 of the second lens on the optical axis, the central thickness CT5 of the fifth lens on the optical axis and the central thickness CT7 of the seventh lens on the optical axis can satisfy 0.5 < (CT2+CT5) / CT7 < 1.5.

[0016] In one embodiment, the maximum half field of view HFOV of the optical imaging lens can satisfy 22° < HFOV < 29°.

[0017] In another aspect, the present application provides an optical imaging lens, which comprises, 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 and a seventh lens. The first lens has positive refractive power; the second lens has refractive power, and the object side surface thereof can be convex; the third lens has refractive power; the fourth lens has negative refractive power, and both the object side surface and the image side surface thereof can be concave; the fifth lens has refractive power; the sixth lens has negative refractive power, and the image side surface thereof can be concave; and the seventh lens has refractive power. The radius of curvature R8 of the image side surface of the fourth lens and the radius of curvature R12 of the image side surface of the sixth lens can satisfy 1 < R8 / R12 < 2.

[0018] In another aspect, the present application also provides an optical imaging lens comprising, 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, and a seventh lens. The first lens can have positive refractive power; the second lens has refractive power, and the object side surface thereof can be convex; the third lens has refractive power; the fourth lens can have negative refractive power, and both the object side surface and the image side surface thereof can be concave; the fifth lens has refractive power; the sixth lens can have negative refractive power, and the image side surface thereof can be concave; and the seventh lens has refractive power. The curvature radius R7 of the object side surface of the fourth lens and the curvature radius R1 of the object side surface of the first lens can satisfy -8.5 < R7 / R1 < -6.

[0019] In another aspect, the present application also provides an optical imaging lens comprising, 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, and a seventh lens. The first lens can have positive refractive power; the second lens has refractive power, and the object side surface thereof can be convex; the third lens has refractive power; the fourth lens can have negative refractive power, and both the object side surface and the image side surface thereof can be concave; the fifth lens has refractive power; the sixth lens can have negative refractive power, and the image side surface thereof can be concave; and the seventh lens has refractive power. The combined focal length f123 of the first lens, the second lens, and the third lens and the effective focal length f3 of the third lens can satisfy 0 < f123 / f3 < 0.5.

[0020] In another aspect, the present application also provides an optical imaging lens comprising, 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, and a seventh lens. The first lens can have positive refractive power; the second lens has refractive power, and the object side surface thereof can be convex; the third lens has refractive power; the fourth lens can have negative refractive power, and both the object side surface and the image side surface thereof can be concave; the fifth lens has refractive power; the sixth lens can have negative refractive power, and the image side surface thereof can be concave; and the seventh lens has refractive power. The combined focal length f123 of the first lens, the second lens, and the third lens and the effective focal length f3 of the third lens can satisfy 0 < f123 / f3 < 0.5.

[0021] In another aspect, the present application also provides an optical imaging lens comprising, 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, and a seventh lens. The first lens can have positive refractive power. The second lens has refractive power, and the object side surface of the second lens can be convex. The third lens has refractive power. The fourth lens can have negative refractive power, and both the object side surface and the image side surface of the fourth lens can be concave. The fifth lens has refractive power. The sixth lens can have negative refractive power, and the image side surface of the sixth lens can be concave. The seventh lens has refractive power. The combined focal length f45 of the fourth lens and the fifth lens and the combined focal length f67 of the sixth lens and the seventh lens can satisfy 0 < f45 / f67 < 0.6.

[0022] In another aspect, the present application also provides an optical imaging lens comprising, 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, and a seventh lens. The first lens can have positive refractive power. The second lens has refractive power, and the object side surface of the second lens can be convex. The third lens has refractive power. The fourth lens can have negative refractive power, and both the object side surface and the image side surface of the fourth lens can be concave. The fifth lens has refractive power. The sixth lens can have negative refractive power, and the image side surface of the sixth lens can be concave. The seventh lens has refractive power. The interval distance T56 of the fifth lens and the sixth lens on the optical axis and the interval distance T67 of the sixth lens and the seventh lens on the optical axis can satisfy 2.5 < T56 / T67 < 3.5.

[0023] In another aspect, the present application also provides an optical imaging lens comprising, 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, and a seventh lens. The first lens can have positive refractive power. The second lens has refractive power, and the object side surface of the second lens can be convex. The third lens has refractive power. The fourth lens can have negative refractive power, and both the object side surface and the image side surface of the fourth lens can be concave. The fifth lens has refractive power. The sixth lens can have negative refractive power, and the image side surface of the sixth lens can be concave. The seventh lens has refractive power. The central thickness CT2 of the second lens on the optical axis, the central thickness CT5 of the fifth lens on the optical axis, and the central thickness CT7 of the seventh lens on the optical axis can satisfy 0.5 < (CT2+CT5) / CT7 < 1.5.

[0024] The present application adopts seven aspheric lenses, and by reasonably allocating the refractive power, surface shape, central thickness of each lens, and axial interval between lenses, etc., the above optical imaging lens has at least one of the following beneficial effects: long focal length, miniaturization, good processing characteristics, high imaging quality, etc. BRIEF DESCRIPTION OF DRAWINGS

[0025] Other features, objects, and advantages of the application will become more apparent from the following detailed description when read in conjunction with the accompanying drawings. In the drawings:

[0026] FIG. 1 A structural schematic diagram of an optical imaging lens according to Embodiment 1 of the application is shown;

[0027] FIG. 2A to FIG. 2D Axial chromatic aberration curves, astigmatism curves, distortion curves, and lateral chromatic aberration curves of the optical imaging lens of Embodiment 1 are shown respectively;

[0028] FIG. 3 A structural schematic diagram of an optical imaging lens according to Embodiment 2 of the application is shown;

[0029] FIG. 4A to FIG. 4D Axial chromatic aberration curves, astigmatism curves, distortion curves, and lateral chromatic aberration curves of the optical imaging lens of Embodiment 2 are shown respectively;

[0030] FIG. 5 A structural schematic diagram of an optical imaging lens according to Embodiment 3 of the application is shown;

[0031] FIG. 6A to FIG. 6D Axial chromatic aberration curves, astigmatism curves, distortion curves, and lateral chromatic aberration curves of the optical imaging lens of Embodiment 3 are shown respectively;

[0032] FIG. 7 A structural schematic diagram of an optical imaging lens according to Embodiment 4 of the application is shown;

[0033] FIG. 8A to FIG. 8D Axial chromatic aberration curves, astigmatism curves, distortion curves, and lateral chromatic aberration curves of the optical imaging lens of Embodiment 4 are shown respectively;

[0034] FIG. 9 A structural schematic diagram of an optical imaging lens according to Embodiment 5 of the application is shown;

[0035] FIG. 10A to FIG. 10D Axial chromatic aberration curves, astigmatism curves, distortion curves, and lateral chromatic aberration curves of the optical imaging lens of Embodiment 5 are shown respectively;

[0036] FIG. 11 A structural schematic diagram of an optical imaging lens according to Embodiment 6 of the application is shown;

[0037] FIG. 12A to FIG. 12D Axial chromatic aberration curves, astigmatism curves, distortion curves, and lateral chromatic aberration curves of the optical imaging lens of Embodiment 6 are shown respectively;

[0038] FIG. 13 A structural schematic diagram of an optical imaging lens according to Embodiment 7 of the application is shown;

[0039] FIG. 14A to FIG. 14D On-axis chromatic aberration curves, astigmatism curves, distortion curves and lateral chromatic aberration curves of the optical imaging lens of embodiment 7 are respectively shown;

[0040] FIG. 15 A structural schematic diagram of an optical imaging lens according to embodiment 8 of the present application is shown;

[0041] FIG. 16A to FIG. 16D On-axis chromatic aberration curves, astigmatism curves, distortion curves and lateral chromatic aberration curves of the optical imaging lens of embodiment 8 are respectively shown;

[0042] FIG. 17 A structural schematic diagram of an optical imaging lens according to embodiment 9 of the present application is shown;

[0043] FIG. 18A to FIG. 18D On-axis chromatic aberration curves, astigmatism curves, distortion curves and lateral chromatic aberration curves of the optical imaging lens of embodiment 9 are respectively shown;

[0044] FIG. 19 A structural schematic diagram of an optical imaging lens according to embodiment 10 of the present application is shown;

[0045] FIG. 20A to FIG. 20D On-axis chromatic aberration curves, astigmatism curves, distortion curves and lateral chromatic aberration curves of the optical imaging lens of embodiment 10 are respectively shown;

[0046] FIG. 21 A structural schematic diagram of an optical imaging lens according to embodiment 11 of the present application is shown;

[0047] FIG. 22A to FIG. 22D On-axis chromatic aberration curves, astigmatism curves, distortion curves and lateral chromatic aberration curves of the optical imaging lens of embodiment 11 are respectively shown. DETAILED DESCRIPTION

[0048] For a better understanding of the present application, various aspects of the present application will be described in more detail below with reference to the accompanying drawings. It is to be understood that the detailed description is merely descriptive of exemplary embodiments of the present application and is not intended to limit the scope of the present application in any way. Throughout the specification, like reference numbers designate like elements. The expression “and / or” includes any and all combinations of one or more of the associated listed items.

[0049] It should be noted that, in the present specification, the expressions first, second, third and the like are merely used to distinguish one feature from another feature, and do not represent any limitation on the features. Therefore, the first lens discussed below can also be referred to as the second lens or the third lens without departing from the teachings of the present application.

[0050] In the drawings, the thickness, size, and shape of the lenses have been exaggerated slightly for ease of explanation. Specifically, the shape of the spherical or aspherical surface shown in the drawings is shown by way of example. That is, the shape of the spherical or aspherical surface is not limited to the shape of the spherical or aspherical surface shown in the drawings. The drawings are merely examples and are not drawn to scale.

[0051] In this document, the paraxial region refers to a region near the optical axis. If a lens surface is convex and the position of the convex surface is not specified, it means that the lens surface is convex at least in the paraxial region. If a lens surface is concave and the position of the concave surface is not specified, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object is referred to as the object side surface of the lens, and the surface of each lens closest to the image plane is referred to as the image side surface of the lens.

[0052] It should also be understood that the words "comprise", "comprising", "include", "including", and / or "contain", when used in this specification, specify the presence of stated features, elements, and / or components, but do not preclude the presence or addition of one or more other features, elements, components, and / or groups thereof. Furthermore, when describing the embodiments of the present application, the use of "may" means "one or more embodiments of the present application". Also, the word "exemplary" is intended to mean an example or an illustration.

[0053] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It should also be understood that the terms should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0054] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0055] The features, principles, and other aspects of the present application are described in detail below.

[0056] The optical imaging lens according to the exemplary embodiments of the present application can include, for example, seven lenses having optical power, i.e., 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 order from the object side to the image side along the optical axis, and an air gap can be present between each adjacent lenses.

[0057] In exemplary embodiments, the first lens can have positive refractive power; the second lens has positive refractive power or negative refractive power, and the object side thereof can be convex; the third lens has positive refractive power or negative refractive power; the fourth lens can have negative refractive power, and the object side thereof can be concave, and the image side thereof can be concave; the fifth lens has positive refractive power or negative refractive power; the sixth lens can have negative refractive power, and the image side thereof can be concave; and the seventh lens has positive refractive power or negative refractive power.

[0058] In exemplary embodiments, the object side of the first lens can be convex.

[0059] In exemplary embodiments, one of the object side and the image side of the seventh lens is convex, and the other is concave.

[0060] In exemplary embodiments, the optical imaging lens of the present application can satisfy condition formula 2 < T56 / (T12+T23) / 5 < 3, wherein T56 is the interval distance of the fifth lens and the sixth lens on the optical axis, T12 is the interval distance of the first lens and the second lens on the optical axis, and T23 is the interval distance of the second lens and the third lens on the optical axis. More specifically, T56, T12 and T23 can further satisfy 2.25 ≤ T56 / (T12+T23) / 5 ≤ 2.56. Reasonable allocation of the air gap of the first lens, the second lens, the third lens, and the fifth lens and the sixth lens on the optical axis is conducive to meeting the processability of the lens, and can effectively reduce the size of the rear end of the optical imaging lens, and avoid the excessive size of the optical imaging lens.

[0061] In exemplary embodiments, the optical imaging lens of the present application can satisfy condition formula 1 < R8 / R12 < 2, wherein R8 is the curvature radius of the image side of the fourth lens, and R12 is the curvature radius of the image side of the sixth lens. More specifically, R8 and R12 can further satisfy 1.05 ≤ R8 / R12 ≤ 1.60. Reasonable control of the curvature radius of the image side of the fourth lens and the curvature radius of the image side of the sixth lens is helpful to reduce the refractive power of the image side lens of the optical imaging lens, so that the optical imaging lens has better balanced chromatic aberration and distortion.

[0062] In exemplary embodiments, the optical imaging lens of the present application can satisfy condition formula -2.5 < f6 / f1 < -1, wherein f6 is the effective focal length of the sixth lens, and f1 is the effective focal length of the first lens. More specifically, f6 and f1 can further satisfy -2.26 ≤ f6 / f1 ≤ -1.38. Reasonable allocation of the effective focal length of the sixth lens and the first lens is helpful for the optical imaging lens to realize long-focus characteristics. At the same time, such arrangement is also conducive to improving the convergence ability of light, adjusting the light focusing position, and shortening the total length of the optical imaging lens.

[0063] In exemplary embodiments, the optical imaging lens of the present application can satisfy the condition formula -8.5 < R7 / R1 < -6, wherein R7 is the curvature radius of the object side surface of the fourth lens, and R1 is the curvature radius of the object side surface of the first lens. More specifically, R7 and R1 can further satisfy -8.20 ≤ R7 / R1 ≤ -6.18. The curvature radius of the object side surface of the fourth lens and the curvature radius of the object side surface of the first lens are reasonably distributed. The astigmatism of the optical imaging lens can be effectively balanced, and further ensure the miniaturization of the optical imaging lens.

[0064] In exemplary embodiments, the optical imaging lens of the present application can satisfy the condition formula 0 < R1 / R3 < 0.5, wherein R1 is the curvature radius of the object side surface of the first lens, and R3 is the curvature radius of the object side surface of the second lens. More specifically, R1 and R3 can further satisfy 0.21 ≤ R1 / R3 ≤ 0.38. The curvature radius of the object side surface of the first lens and the curvature radius of the object side surface of the second lens are reasonably distributed, so that the optical imaging lens has a strong ability to balance astigmatism, which is beneficial to reasonably control the chief ray deflection angle, and further ensure the miniaturization of the optical imaging lens.

[0065] In exemplary embodiments, the optical imaging lens of the present application can satisfy the condition formula 0 < f123 / f3 < 0.5, wherein f123 is the combined focal length of the first lens, the second lens and the third lens, and f3 is the effective focal length of the third lens. More specifically, f123 and f3 can further satisfy 0 < f123 / f3 ≤ 0.36. Reasonably selecting the ratio of the combined focal length of the first lens, the second lens and the third lens to the effective focal length of the third lens can correct aberration while realizing the long-focus characteristics of the lens. At the same time, it is beneficial to make the variation degree of freedom of the lens surface higher, so as to improve the ability of the optical imaging lens to correct astigmatism and field curvature.

[0066] In exemplary embodiments, the optical imaging lens of the present application can satisfy the condition formula -3 < SAG42 / SAG51 < -0.5, wherein SAG42 is the axial distance from the intersection of the image side surface of the fourth lens and the optical axis to the effective radius vertex of the image side surface of the fourth lens, and SAG51 is the axial distance from 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. More specifically, SAG42 and SAG51 can further satisfy -2.56 ≤ SAG42 / SAG51 ≤ -0.99. Reasonably controlling the ratio of SAG42 to SAG51 adjusts the chief ray angle of the optical imaging lens, so as to effectively improve the relative brightness of the optical imaging lens and improve the image clarity.

[0067] In exemplary embodiments, the optical imaging lens of the present application can satisfy the condition formula 0 < f45 / f67 < 0.6, wherein f45 is the combined focal length of the fourth lens and the fifth lens, and f67 is the combined focal length of the sixth lens and the seventh lens. More specifically, f45 and f67 can further satisfy 0.26 ≤ f45 / f67 ≤ 0.51. Reasonable control of f45 and f67 can correct aberration while achieving the long-focus characteristics of the lens. At the same time, it helps to appropriately shorten the total length of the optical imaging lens, meeting the requirements of thinning the lens.

[0068] In exemplary embodiments, the optical imaging lens of the present application can satisfy the condition formula 2.5 < T56 / T67 < 3.5, wherein T56 is the interval distance of the fifth lens and the sixth lens on the optical axis, and T67 is the interval distance of the sixth lens and the seventh lens on the optical axis. More specifically, T56 and T67 can further satisfy 2.56 ≤ T56 / T67 ≤ 3.37. Reasonable selection of the ratio between the air gap of the fifth lens and the sixth lens on the optical axis and the air gap of the sixth lens and the seventh lens on the optical axis helps to appropriately shorten the total length of the optical imaging lens, while achieving the long-focus characteristics of the lens and meeting the requirements of thinning. At the same time, it is beneficial to adjust the structure of the optical imaging lens and reduce the difficulty of lens processing and assembly.

[0069] In exemplary embodiments, the optical imaging lens of the present application can satisfy the condition formula 0.5 < (CT2+CT5) / CT7 < 1.5, CT2 is the central thickness of the second lens on the optical axis, CT5 is the central thickness of the fifth lens on the optical axis, and CT7 is the central thickness of the seventh lens on the optical axis. More specifically, CT2, CT5 and CT7 can further satisfy 0.75 ≤ (CT2+CT5) / CT7 ≤ 1.35. Reasonable control of the central thickness of the second lens, the fifth lens and the seventh lens on the optical axis can provide sufficient spacing space between the lenses under the condition of a certain total length of the lens, thereby providing higher freedom of lens surface change to improve the ability of the optical imaging lens to correct astigmatism and field curvature.

[0070] In exemplary embodiments, the optical imaging lens of the present application can satisfy the condition formula 22° < HFOV < 29°, wherein HFOV is the maximum half field of view of the optical imaging lens. More specifically, HFOV can further satisfy 23.9° ≤ HFOV ≤ 26.3°. Reasonable control of the maximum half field of view of the optical imaging lens enables the optical imaging lens to meet the long-focus characteristics and have better balanced aberration capability, and can reasonably control the chief ray deflection angle to improve the matching degree with the chip.

[0071] In an exemplary embodiment, the optical imaging lens described above may further include an aperture stop to improve the image quality of the lens. Optionally, the aperture stop may be disposed between the fourth lens and the fifth lens, and close to the image-side surface of the fourth lens. Those skilled in the art should understand that the aperture stop may be disposed at other suitable locations as needed.

[0072] Optionally, the aforementioned optical imaging lens may also include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging surface.

[0073] The optical imaging lens according to the above embodiments of this application can employ multiple lenses, such as the seven lenses described above. By rationally allocating the optical power, surface shape, center thickness of each lens, and on-axis spacing between each lens, the size of the lens can be effectively reduced, the sensitivity of the lens can be decreased, and the manufacturability of the lens can be improved, making the optical imaging lens more conducive to manufacturing and suitable for portable electronic products. The optical imaging lens configured as described above also has beneficial effects such as long focal length, good manufacturability, miniaturization, and high image quality.

[0074] In the embodiments of this application, at least one of the mirror surfaces of each lens is an aspherical mirror surface. An aspherical lens is characterized by a continuously changing curvature from the lens center to the lens periphery. Unlike a spherical lens, which has a constant curvature from the lens center to the lens periphery, an aspherical lens has superior curvature radius characteristics, offering advantages in improving distortion aberrations and astigmatism. By using an aspherical lens, aberrations occurring during imaging can be eliminated as much as possible, thereby improving image quality.

[0075] The aspherical seven-element telephoto lens of this application can achieve ideal magnification and good imaging effect, is suitable for long-distance shooting, can make the subject stand out in a cluttered environment, and has higher imaging quality than similar products at the same shooting distance.

[0076] However, those skilled in the art will understand that the number of lenses constituting the optical imaging lens can be varied to obtain the various results and advantages described herein without departing from the technical solutions claimed in this application. 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 desired, the optical imaging lens may also include other numbers of lenses.

[0077] The following describes in further detail, with reference to the accompanying drawings, specific embodiments of the optical imaging lens applicable to the above-described embodiments.

[0078] Example 1

[0079] The following is for reference FIG. 1 to FIG. 2DDescribes an optical imaging lens according to Embodiment 1 of this application. FIG. 1 A schematic diagram of the structure of an optical imaging lens according to Embodiment 1 of this application is shown.

[0080] like FIG. 1 As shown, the optical imaging lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, an aperture stop STO, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an imaging surface S17.

[0081] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being concave and its image-side surface S8 being concave. The fifth lens E5 has positive optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has negative optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through surfaces S1 to S16 and is finally imaged on the imaging surface S17.

[0082] Table 1 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens in the optical imaging lens of Example 1, wherein the units for radius of curvature and thickness are millimeters (mm).

[0083]

[0084] Table 1

[0085] As shown in Table 1, the object-side surface and image-side surface of any one of the lenses, from the first lens E1 to the seventh lens E7, are aspherical. In this embodiment, the surface shape x of each aspherical lens can be defined using, but is not limited to, the following aspherical formula:

[0086]

[0087] Where x is the distance vector from the vertex of the aspherical surface at a height of h along the optical axis; c is the paraxial curvature of the aspherical surface, c = 1 / R (i.e., the paraxial curvature c is the reciprocal of the radius of curvature R in Table 1 above); k is the conic coefficient (given in Table 1); Ai is the i-th order correction coefficient of the aspherical surface. Table 2 below gives the higher-order coefficients A4, A6, A8, A14 that can be used for each aspherical mirror S1-S14 in Example 1. 10 A12 A 14 A 16 A 18 and A 20 .

[0088]

[0089]

[0090] Table 2

[0091] Table 3 shows the effective focal lengths f1 to f7 of each lens in Example 1, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the object side S1 to the imaging surface S17 of the first lens E1, half the diagonal length of the effective pixel area on the imaging surface S17 ImgH, and the maximum half field of view HFOV.

[0092] f1 (mm) 3.95 f7 (mm) 11.89 f2 (mm) 40.47 f (mm) 5.61 f3 (mm) 10.45 TTL (mm) 5.55 f4 (mm) -3.59 ImgH (mm) 2.75 f5 (mm) 85.57 HFOV (°) 26.3 f6 (mm) -6.06

[0093] Table 3

[0094] The optical imaging lens in Example 1 satisfies:

[0095] T56 / (T12+T23) / 5=2.39, where T56 is the distance between the fifth lens E5 and the sixth lens E6 on the optical axis, T12 is the distance between the first lens E1 and the second lens E2 on the optical axis, and T23 is the distance between the second lens E2 and the third lens E3 on the optical axis.

[0096] R8 / R12 = 1.38, where R8 is the radius of curvature of the image-side surface S8 of the fourth lens E4, and R12 is the radius of curvature of the image-side surface S12 of the sixth lens E6.

[0097] f6 / f1=-1.53, where f6 is the effective focal length of the sixth lens E6 and f1 is the effective focal length of the first lens E1;

[0098] R7 / R1 = -6.39, where R7 is the radius of curvature of the object side surface S7 of the fourth lens E4, and R1 is the radius of curvature of the object side surface S1 of the first lens E1.

[0099] R1 / R3 = 0.37, where R1 is the radius of curvature of the object side surface S1 of the first lens E1, and R3 is the radius of curvature of the object side surface S3 of the second lens E2.

[0100] f123 / f3 = 0.27, where f123 is the combined focal length of the first lens E1, the second lens E2 and the third lens E3, and f3 is the effective focal length of the third lens E3;

[0101] SAG42 / SAG51=-1.24, where SAG42 is the on-axis distance from the intersection of the image-side surface S8 of the fourth lens E4 and the optical axis to the vertex of the effective radius of the image-side surface S8 of the fourth lens E4, and SAG51 is the on-axis distance from the intersection of the object-side surface S9 of the fifth lens E5 and the optical axis to the vertex of the effective radius of the object-side surface S9 of the fifth lens E5.

[0102] f45 / f67 = 0.32, where f45 is the combined focal length of the fourth lens E4 and the fifth lens E5, and f67 is the combined focal length of the sixth lens E6 and the seventh lens E7;

[0103] T56 / T67 = 3.08, where T56 is the distance between the fifth lens E5 and the sixth lens E6 on the optical axis, and T67 is the distance between the sixth lens E6 and the seventh lens E7 on the optical axis.

[0104] (CT2+CT5) / CT7=0.96, where CT2 is the center thickness of the second lens E2 on the optical axis, CT5 is the center thickness of the fifth lens E5 on the optical axis, and CT7 is the center thickness of the seventh lens E7 on the optical axis.

[0105] FIG. 2A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 1 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. FIG. 2B The astigmatism curve of the optical imaging lens of Embodiment 1 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. FIG. 2C The distortion curve of the optical imaging lens of Example 1 is shown, which represents the distortion magnitude value corresponding to different image heights. FIG. 2D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 1 is shown, which represents the deviation of light at different image heights on the imaging plane after passing through the lens. According to FIG. 2A to FIG. 2D It can be seen that the optical imaging lens given in Example 1 can achieve good imaging quality.

[0106] Example 2

[0107] The following is for reference FIG. 3 to FIG. 4D This paper describes an optical imaging lens according to Embodiment 2 of this application. For the sake of brevity, descriptions similar to those in Embodiment 1 will be omitted in this embodiment and the following embodiments. FIG. 3 A schematic diagram of the structure of an optical imaging lens according to Embodiment 2 of this application is shown.

[0108] like FIG. 3As shown, the optical imaging lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, an aperture stop STO, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an imaging surface S17.

[0109] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being concave and its image-side surface S8 being concave. The fifth lens E5 has positive optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has negative optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through surfaces S1 to S16 and is finally imaged onto the imaging surface S17.

[0110] Table 4 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens in the optical imaging lens of Example 2, wherein the units for radius of curvature and thickness are millimeters (mm).

[0111]

[0112]

[0113] Table 4

[0114] As shown in Table 4, in Example 2, the object-side surface and image-side surface of any one of the lenses from the first lens E1 to the seventh lens E7 are aspherical. Table 5 shows the higher-order coefficients that can be used for each aspherical mirror in Example 2, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0115] Surface No. A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -5.0309E-03 -1.6057E-02 4.2933E-02 -7.3452E-02 7.1977E-02 -4.2551E-02 1.4558E-02 -2.6013E-03 1.7738E-04 S2 3.4492E-03 2.1404E-01 -5.3526E-01 7.0210E-01 -5.2521E-01 2.1188E-01 -3.4895E-02 -2.3764E-03 1.0775E-03 S3 -9.8470E-03 3.2559E-01 -7.8176E-01 9.8480E-01 -6.6762E-01 2.0699E-01 1.9774E-03 -1.6795E-02 2.8522E-03 S4 -2.5534E-02 6.8113E-01 -2.2447E+00 3.9065E+00 -4.2549E+00 3.0735E+00 -1.4390E+00 3.9195E-01 -4.6569E-02 S5 -9.5690E-04 5.4002E-01 -1.8858E+00 3.3493E+00 -3.7020E+00 2.6994E+00 -1.2545E+00 3.3139E-01 -3.7382E-02 S6 -1.2791E-02 7.2166E-02 -2.6563E-01 5.7573E-01 -7.9428E-01 7.3072E-01 -4.2528E-01 1.3871E-01 -1.9176E-02 S7 3.1394E-02 6.2894E-02 -4.3762E-02 -2.7146E-01 1.0158E+00 -1.6202E+00 1.3824E+00 -6.1031E-01 1.0989E-01 S8 2.5272E-02 5.4429E-01 -4.5974E+00 2.5628E+01 -9.0428E+01 2.0081E+02 -2.7153E+02 2.0379E+02 -6.4946E+01 S9 -1.2586E-01 -4.2118E-01 3.9401E+00 -2.1475E+01 7.2369E+01 -1.5329E+02 1.9842E+02 -1.4335E+02 4.4278E+01 S10 -8.6751E-02 1.5318E-01 -8.8742E-01 3.9754E+00 -1.0670E+01 1.7560E+01 -1.7252E+01 9.3018E+00 -2.1147E+00 S11 -1.5132E-01 -4.3369E-02 2.4372E-01 -4.4880E-01 4.9631E-01 -3.3731E-01 1.3684E-01 -3.0127E-02 2.7556E-03 S12 -2.9004E-01 2.1640E-01 -1.8808E-01 1.2723E-01 -6.7576E-02 2.6585E-02 -7.0892E-03 1.1136E-03 -7.6357E-05 S13 -3.9655E-02 4.0350E-02 -2.1742E-02 4.4485E-03 4.9779E-04 -4.3224E-04 8.9360E-05 -8.4435E-06 3.1134E-07 S14 -6.3263E-02 3.1317E-02 -1.2992E-02 5.0092E-03 -1.8310E-03 4.9224E-04 -8.0750E-05 7.1514E-06 -2.6414E-07

[0116] Table 5

[0117] Table 6 shows the effective focal lengths f1 to f7 of each lens in Example 2, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the object side S1 to the imaging surface S17 of the first lens E1, half the diagonal length of the effective pixel area on the imaging surface S17 ImgH, and the maximum half field of view HFOV.

[0118] f1 (mm) 4.04 f7 (mm) 12.72 f2 (mm) -499.97 f (mm) 5.61 f3 (mm) 7.93 TTL (mm) 5.55 f4 (mm) -3.72 ImgH (mm) 2.75 f5 (mm) 72.39 HFOV (°) 26.3 f6 (mm) -5.89

[0119] Table 6

[0120] FIG. 4A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 2 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. FIG. 4B The astigmatism curve of the optical imaging lens of Embodiment 2 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. FIG. 4C The distortion curve of the optical imaging lens of Embodiment 2 is shown, which represents the distortion magnitude value corresponding to different image heights. FIG. 4D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 2 is shown, which represents the deviation of light at different image heights on the imaging plane after passing through the lens. According to... FIG. 4A to FIG. 4D It can be seen that the optical imaging lens given in Example 2 can achieve good imaging quality.

[0121] Example 3

[0122] The following is for reference FIG. 5 to FIG. 6D An optical imaging lens according to Embodiment 3 of this application is described. FIG. 5 A schematic diagram of the structure of an optical imaging lens according to Embodiment 3 of this application is shown.

[0123] like FIG. 5 As shown, the optical imaging lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, an aperture stop STO, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an imaging surface S17.

[0124] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being convex. The third lens E3 has negative optical power, with its object-side surface S5 being concave and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being concave and its image-side surface S8 being concave. The fifth lens E5 has positive optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has negative optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through surfaces S1 to S16 and is finally imaged onto the imaging surface S17.

[0125] Table 7 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens in the optical imaging lens of Example 3, wherein the units for radius of curvature and thickness are millimeters (mm).

[0126]

[0127]

[0128] Table 7

[0129] As shown in Table 7, in Example 3, the object-side surface and image-side surface of any one of the lenses from the first lens E1 to the seventh lens E7 are aspherical. Table 8 shows the higher-order coefficients that can be used for each aspherical mirror surface in Example 3, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0130] Surface No. A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -5.7694E-03 -1.1894E-02 3.3478E-02 -6.0429E-02 6.0713E-02 -3.6686E-02 1.2968E-02 -2.4692E-03 1.9084E-04 S2 2.1075E-02 1.2556E-01 -3.4048E-01 4.4708E-01 -3.1877E-01 1.1181E-01 -8.2165E-03 -5.5519E-03 1.1478E-03 S3 2.1088E-02 1.3176E-01 -3.0509E-01 2.9859E-01 -4.5214E-02 -1.5722E-01 1.3832E-01 -4.7216E-02 5.9800E-03 S4 4.4036E-03 3.6217E-01 -1.1306E+00 1.8743E+00 -1.8792E+00 1.1808E+00 -4.5560E-01 9.8692E-02 -9.1798E-03 S5 1.1810E-02 3.7212E-01 -1.2416E+00 2.1673E+00 -2.3241E+00 1.6017E+00 -6.9278E-01 1.7048E-01 -1.8119E-02 S6 -2.1564E-02 1.2693E-01 -4.6949E-01 1.0090E+00 -1.3622E+00 1.2041E+00 -6.7950E-01 2.2120E-01 -3.1402E-02 S7 5.4077E-02 4.5048E-02 -1.0364E-01 9.6570E-04 4.8346E-01 -1.0196E+00 9.8008E-01 -4.5998E-01 8.4974E-02 S8 3.8469E-02 7.1084E-01 -6.6809E+00 3.8458E+01 -1.3826E+02 3.1243E+02 -4.3041E+02 3.2988E+02 -1.0773E+02 S9 -1.1038E-01 -4.9400E-01 4.5758E+00 -2.5183E+01 8.5876E+01 -1.8366E+02 2.3936E+02 -1.7354E+02 5.3496E+01 S10 -7.6795E-02 1.0729E-01 -6.0875E-01 2.7154E+00 -7.1307E+00 1.1480E+01 -1.1026E+01 5.8006E+00 -1.2865E+00 S11 -1.2392E-01 -9.1106E-03 6.6616E-02 -7.1423E-02 5.1340E-02 -2.4722E-02 7.8408E-03 -1.4811E-03 1.2291E-04 S12 -1.9741E-01 9.4406E-02 -5.3972E-02 2.5794E-02 -1.2843E-02 5.7885E-03 -1.7749E-03 3.0570E-04 -2.2236E-05 S13 -2.0030E-02 4.6379E-03 8.7157E-03 -1.1642E-02 5.8770E-03 -1.5435E-03 2.2352E-04 -1.6686E-05 4.8203E-07 S14 -6.3292E-02 2.7973E-02 -1.2946E-02 6.1057E-03 -2.5516E-03 7.3932E-04 -1.2955E-04 1.2418E-05 -5.0536E-07

[0131] Table 8

[0132] Table 9 shows the effective focal lengths f1 to f7 of each lens in Example 3, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the object side S1 to the imaging surface S17 of the first lens E1, half the diagonal length of the effective pixel area on the imaging surface S17 ImgH, and the maximum half field of view HFOV.

[0133] f1 (mm) 3.92 f7 (mm) 12.13 f2 (mm) 8.82 f (mm) 5.61 f3 (mm) -999.60 TTL (mm) 5.55 f4 (mm) -3.66 ImgH (mm) 2.75 f5 (mm) 96.57 HFOV (°) 26.3 f6 (mm) -6.09

[0134] Table 9

[0135] FIG. 6A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 3 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. FIG. 6B The astigmatism curve of the optical imaging lens of Embodiment 3 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. FIG. 6C The distortion curve of the optical imaging lens of Example 3 is shown, which represents the distortion magnitude value corresponding to different image heights. FIG. 6D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 3 is shown, which represents the deviation of light at different image heights on the imaging plane after passing through the lens. According to... FIG. 6A to FIG. 6D It can be seen that the optical imaging lens given in Example 3 can achieve good imaging quality.

[0136] Example 4

[0137] The following is for reference FIG. 7 to FIG. 8D An optical imaging lens according to Embodiment 4 of this application is described. FIG. 7 A schematic diagram of the structure of an optical imaging lens according to Embodiment 4 of this application is shown.

[0138] like FIG. 7As shown, the optical imaging lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, an aperture stop STO, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an imaging surface S17.

[0139] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being concave and its image-side surface S8 being concave. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has negative optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through surfaces S1 to S16 and is finally imaged onto the imaging surface S17.

[0140] Table 10 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens in the optical imaging lens of Example 4, wherein the units for radius of curvature and thickness are millimeters (mm).

[0141]

[0142] Table 10

[0143] As shown in Table 10, in Example 4, the object-side surface and image-side surface of any one of the lenses from the first lens E1 to the seventh lens E7 are aspherical. Table 11 shows the higher-order coefficients that can be used for each aspherical mirror in Example 4, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0144]

[0145]

[0146] Table 11

[0147] Table 12 shows the effective focal lengths f1 to f7 of each lens in Example 4, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the object side surface S1 to the imaging surface S17 of the first lens E1, half the diagonal length of the effective pixel area on the imaging surface S17 ImgH, and the maximum half field of view HFOV.

[0148] f1 (mm) 4.01 f7 (mm) 12.77 f2 (mm) 40.27 f (mm) 5.61 f3 (mm) 10.13 TTL (mm) 5.55 f4 (mm) -3.83 ImgH (mm) 2.75 f5 (mm) -1001.57 HFOV (°) 26.3 f6 (mm) -6.05

[0149] Table 12

[0150] FIG. 8A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 4 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. FIG. 8B The astigmatism curve of the optical imaging lens of Embodiment 4 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. FIG. 8C The distortion curve of the optical imaging lens of Example 4 is shown, which represents the distortion magnitude value 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 light at different image heights on the imaging plane after passing through the lens. According to... FIG. 8A to FIG. 8D It can be seen that the optical imaging lens given in Example 4 can achieve good imaging quality.

[0151] Example 5

[0152] The following is for reference FIG. 9 to FIG. 10D An optical imaging lens according to Embodiment 5 of this application is described. FIG. 9 A schematic diagram of the structure of an optical imaging lens according to Embodiment 5 of this application is shown.

[0153] like FIG. 9 As shown, the optical imaging lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, an aperture stop STO, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an imaging surface S17.

[0154] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being concave and its image-side surface S8 being concave. The fifth lens E5 has positive optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has negative optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through surfaces S1 to S16 and is finally imaged onto the imaging surface S17.

[0155] Table 13 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 5, wherein the units of radius of curvature and thickness are millimeters (mm).

[0156]

[0157]

[0158] Table 13

[0159] As shown in Table 13, in Embodiment 5, the object-side surface and image-side surface of any one of the lenses from the first lens E1 to the seventh lens E7 are aspherical. Table 14 shows the higher-order coefficients that can be used for each aspherical mirror surface in Embodiment 5, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0160] Surface No. A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -4.0871E-03 -2.2860E-02 6.3020E-02 -1.0890E-01 1.1107E-01 -6.9528E-02 2.5954E-02 -5.3073E-03 4.5397E-04 S2 1.8352E-02 1.5595E-01 -4.7142E-01 7.0284E-01 -5.8143E-01 2.6033E-01 -5.2531E-02 1.7112E-04 1.0429E-03 S3 1.4436E-02 2.2200E-01 -5.9581E-01 7.4042E-01 -3.6927E-01 -7.9314E-02 1.7397E-01 -7.2090E-02 1.0087E-02 S4 -3.5542E-02 7.1807E-01 -2.3824E+00 4.1446E+00 -4.2674E+00 2.6958E+00 -1.0270E+00 2.1660E-01 -1.9421E-02 S5 -2.0531E-02 6.3975E-01 -2.2145E+00 4.0402E+00 -4.4759E+00 3.1386E+00 -1.3643E+00 3.3501E-01 -3.5430E-02 S6 -1.7865E-02 1.1570E-01 -4.0713E-01 8.5899E-01 -1.1708E+00 1.0682E+00 -6.2606E-01 2.0966E-01 -3.0173E-02 S7 3.6270E-02 8.7926E-02 -1.8095E-01 1.8021E-01 7.1719E-02 -3.3770E-01 2.9577E-01 -9.6873E-02 6.6398E-03 S8 1.0029E-02 8.2764E-01 -7.1062E+00 3.8940E+01 -1.3371E+02 2.8895E+02 -3.8085E+02 2.7936E+02 -8.7331E+01 S9 -1.1351E-01 -5.3483E-01 4.8550E+00 -2.5388E+01 8.2550E+01 -1.6887E+02 2.1131E+02 -1.4759E+02 4.3992E+01 S10 -6.9383E-02 6.1199E-02 -1.7491E-01 6.7174E-01 -1.4764E+00 2.0107E+00 -1.6366E+00 7.3027E-01 -1.3808E-01 S11 -5.0524E-02 -2.5500E-01 3.6967E-01 -2.9460E-01 1.5540E-01 -5.1608E-02 9.9375E-03 -9.6683E-04 3.3416E-05 S12 -7.5697E-02 -1.5313E-01 2.2201E-01 -1.8468E-01 1.0106E-01 -3.6673E-02 8.5454E-03 -1.1561E-03 6.8592E-05 S13 -4.3401E-02 7.4187E-02 -8.4592E-02 5.6170E-02 -2.3562E-02 6.3079E-03 -1.0375E-03 9.5372E-05 -3.7597E-06 S14 -8.7296E-02 6.4531E-02 -4.0165E-02 1.8535E-02 -5.8400E-03 1.1636E-03 -1.3822E-04 9.1883E-06 -2.8531E-07

[0161] Table 14

[0162] Table 15 gives the effective focal lengths f1 to f7 of each lens in Example 5, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the object side surface S1 to the imaging surface S17 of the first lens E1, half the diagonal length of the effective pixel area on the imaging surface S17 ImgH, and the maximum half field of view HFOV.

[0163] f1 (mm) 3.98 f7 (mm) -499.89 f2 (mm) 47.68 f (mm) 5.61 f3 (mm) 10.55 TTL (mm) 5.55 f4 (mm) -3.93 ImgH (mm) 2.75 f5 (mm) 70.70 HFOV (°) 26.3 f6 (mm) -9.00

[0164] Table 15

[0165] FIG. 10A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 5 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. FIG. 10B The astigmatism curve of the optical imaging lens of Embodiment 5 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. FIG. 10C The distortion curve of the optical imaging lens of Example 5 is shown, which represents the distortion magnitude value corresponding to different image heights. FIG. 10D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 5 is shown, which represents the deviation of light at different image heights on the imaging plane after passing through the lens. According to... FIG. 10A to FIG. 10D It can be seen that the optical imaging lens given in Example 5 can achieve good imaging quality.

[0166] Example 6

[0167] The following is for reference FIG. 11 to FIG. 12D An optical imaging lens according to Embodiment 6 of this application is described. FIG. 11 A schematic diagram of the structure of an optical imaging lens according to Embodiment 6 of this application is shown.

[0168] like FIG. 11As shown, the optical imaging lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, an aperture stop STO, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an imaging surface S17.

[0169] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being convex. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has negative optical power, with its object-side surface S7 being concave and its image-side surface S8 being concave. The fifth lens E5 has positive optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has negative optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through surfaces S1 to S16 and is finally imaged on the imaging surface S17.

[0170] Table 16 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 6, wherein the units of radius of curvature and thickness are millimeters (mm).

[0171]

[0172]

[0173] Table 16

[0174] As shown in Table 16, in Example 6, the object-side surface and image-side surface of any one of the lenses from the first lens E1 to the seventh lens E7 are aspherical. Table 17 shows the higher-order coefficients that can be used for each aspherical mirror in Example 6, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0175] Surface No. A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -6.1751E-03 -1.4711E-02 3.7495E-02 -6.6514E-02 6.8669E-02 -4.4108E-02 1.7097E-02 -3.6801E-03 3.3601E-04 S2 3.1535E-02 6.6638E-02 -1.8140E-01 2.3596E-01 -1.8042E-01 8.0459E-02 -1.9271E-02 1.8330E-03 2.7456E-05 S3 2.3753E-02 9.8601E-02 -1.9187E-01 1.5779E-01 -6.8596E-03 -8.6383E-02 6.5401E-02 -2.0311E-02 2.3926E-03 S4 -2.3673E-04 3.1806E-01 -7.6780E-01 7.8816E-01 -2.2638E-01 -2.3689E-01 2.3896E-01 -8.2699E-02 1.0404E-02 S5 1.3780E-02 3.0281E-01 -7.9347E-01 8.8510E-01 -3.4517E-01 -1.7452E-01 2.3801E-01 -9.4004E-02 1.3385E-02 S6 -1.9562E-02 1.2203E-01 -4.4686E-01 9.8910E-01 -1.4078E+00 1.3144E+00 -7.7430E-01 2.5888E-01 -3.7224E-02 S7 5.6782E-02 1.4038E-02 4.7624E-02 -5.0041E-01 1.5334E+00 -2.3857E+00 2.0534E+00 -9.2857E-01 1.7264E-01 S8 3.8548E-02 7.0288E-01 -6.5758E+00 3.7316E+01 -1.3220E+02 2.9447E+02 -3.9985E+02 3.0196E+02 -9.7100E+01 S9 -1.1319E-01 -4.8695E-01 4.3790E+00 -2.3693E+01 7.9922E+01 -1.6934E+02 2.1896E+02 -1.5763E+02 4.8300E+01 S10 -8.5010E-02 1.3825E-01 -9.4187E-01 4.4524E+00 -1.2269E+01 2.0631E+01 -2.0651E+01 1.1313E+01 -2.6119E+00 S11 -1.2078E-01 -1.4408E-02 5.4697E-02 -5.3736E-02 4.1852E-02 -2.4046E-02 9.4036E-03 -2.1250E-03 2.0102E-04 S12 -2.0741E-01 1.1660E-01 -9.1811E-02 6.2849E-02 -3.6130E-02 1.5323E-02 -4.2434E-03 6.7251E-04 -4.5964E-05 S13 -2.9433E-02 2.3758E-02 -8.9961E-03 -1.2143E-03 1.8613E-03 -5.6582E-04 7.9998E-05 -5.1833E-06 1.0100E-07 S14 -5.4133E-02 1.8098E-02 -4.5047E-03 1.3649E-03 -7.9296E-04 3.0476E-04 -6.1423E-05 6.3116E-06 -2.6626E-07

[0176] Table 17

[0177] Table 18 gives the effective focal lengths f1 to f7 of each lens in Example 6, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the object side S1 to the imaging surface S17 of the first lens E1, half the diagonal length of the effective pixel area on the imaging surface S17 ImgH, and the maximum half field of view HFOV.

[0178] f1 (mm) 3.44 f7 (mm) 12.25 f2 (mm) -284.28 f (mm) 5.61 f3 (mm) 12.85 TTL (mm) 5.55 f4 (mm) -3.53 ImgH (mm) 2.75 f5 (mm) 53.54 HFOV (°) 26.2 f6 (mm) -6.08

[0179] Table 18

[0180] FIG. 12A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 6 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. FIG. 12B The astigmatism curve of the optical imaging lens of Embodiment 6 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. FIG. 12C The distortion curve of the optical imaging lens of Example 6 is shown, which represents the distortion magnitude value corresponding to different image heights. FIG. 12D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 6 is shown, which represents the deviation of light at different image heights on the imaging plane after passing through the lens. According to FIG. 12A to FIG. 12D It can be seen that the optical imaging lens given in Example 6 can achieve good imaging quality.

[0181] Example 7

[0182] The following is for reference FIG. 13 to FIG. 14D An optical imaging lens according to Embodiment 7 of this application is described. FIG. 13 A schematic diagram of the structure of an optical imaging lens according to Embodiment 7 of this application is shown.

[0183] like FIG. 13 As shown, the optical imaging lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, an aperture stop STO, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an imaging surface S17.

[0184] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has negative optical power, with its object-side surface S7 being concave and its image-side surface S8 being concave. The fifth lens E5 has positive optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has negative optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through surfaces S1 to S16 and is finally imaged on the imaging surface S17.

[0185] Table 19 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens in the optical imaging lens of Example 7, wherein the units for radius of curvature and thickness are millimeters (mm).

[0186]

[0187] Table 19

[0188] As shown in Table 19, in Example 7, the object-side surface and image-side surface of any one of the lenses from the first lens E1 to the seventh lens E7 are aspherical. Table 20 shows the higher-order coefficients that can be used for each aspherical mirror surface in Example 7, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0189]

[0190]

[0191] Table 20

[0192] Table 21 gives the effective focal lengths f1 to f7 of each lens in Example 7, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the object side surface S1 to the imaging surface S17 of the first lens E1, half the diagonal length of the effective pixel area on the imaging surface S17 ImgH, and the maximum half field of view HFOV.

[0193] f1 (mm) 3.99 f7 (mm) 12.31 f2 (mm) 40.38 f (mm) 5.61 f3 (mm) 10.44 TTL (mm) 5.55 f4 (mm) -3.72 ImgH (mm) 2.75 f5 (mm) 111.73 HFOV (°) 23.9 f6 (mm) -5.96

[0194] Table 21

[0195] FIG. 14A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 7 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. FIG. 14B The astigmatism curve of the optical imaging lens of Embodiment 7 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. FIG. 14C The distortion curve of the optical imaging lens of Embodiment 7 is shown, which represents the distortion magnitude value corresponding to different image heights. FIG. 14D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 7 is shown, which represents the deviation of light at different image heights on the imaging plane after passing through the lens. According to FIG. 14A to FIG. 14D It can be seen that the optical imaging lens given in Example 7 can achieve good imaging quality.

[0196] Example 8

[0197] The following is for reference FIG. 15 to FIG. 16D An optical imaging lens according to Embodiment 8 of this application is described. FIG. 15 A schematic diagram of the structure of an optical imaging lens according to Embodiment 8 of this application is shown.

[0198] like FIG. 15As shown, the optical imaging lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, an aperture stop STO, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an imaging surface S17.

[0199] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being concave and its image-side surface S8 being concave. The fifth lens E5 has positive optical power, with its object-side surface S9 being convex and its image-side surface S10 being convex. The sixth lens E6 has negative optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through surfaces S1 to S16 and is finally imaged on the imaging surface S17.

[0200] Table 22 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 8, wherein the units of radius of curvature and thickness are millimeters (mm).

[0201]

[0202]

[0203] Table 22

[0204] As shown in Table 22, in Embodiment 8, the object-side surface and image-side surface of any one of the lenses from the first lens E1 to the seventh lens E7 are aspherical. Table 23 shows the higher-order coefficients that can be used for each aspherical mirror surface in Embodiment 8, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0205] Surface No. A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -5.8251E-03 -1.2678E-02 3.3375E-02 -5.7683E-02 5.7812E-02 -3.5748E-02 1.3163E-02 -2.6553E-03 2.2218E-04 S2 2.8615E-02 7.5375E-02 -2.1662E-01 2.9496E-01 -2.1859E-01 7.9760E-02 -6.6289E-03 -3.8358E-03 8.1970E-04 S3 2.9267E-02 1.0569E-01 -2.6302E-01 2.8536E-01 -9.2139E-02 -8.5954E-02 9.2427E-02 -3.2550E-02 4.0800E-03 S4 -1.1802E-02 5.0272E-01 -1.6226E+00 2.7962E+00 -2.9149E+00 1.9033E+00 -7.6296E-01 1.7175E-01 -1.6615E-02 S5 -9.5678E-03 4.9251E-01 -1.6643E+00 3.0391E+00 -3.4367E+00 2.4832E+00 -1.1129E+00 2.8062E-01 -3.0318E-02 S6 -2.0608E-02 1.1728E-01 -4.0180E-01 8.7999E-01 -1.2834E+00 1.2425E+00 -7.5726E-01 2.6082E-01 -3.8559E-02 S7 3.8257E-02 1.0252E-01 -1.6912E-01 -7.2353E-02 8.0719E-01 -1.4474E+00 1.2478E+00 -5.2713E-01 8.4439E-02 S8 7.7914E-03 8.3293E-01 -7.3105E+00 4.2949E+01 -1.5976E+02 3.7355E+02 -5.3112E+02 4.1902E+02 -1.4055E+02 S9 -1.2597E-01 -4.1648E-01 4.4899E+00 -2.6485E+01 9.5404E+01 -2.1377E+02 2.8976E+02 -2.1690E+02 6.8565E+01 S10 -1.0540E-01 2.1181E-01 -1.4107E+00 6.6419E+00 -1.9004E+01 3.3449E+01 -3.5232E+01 2.0374E+01 -4.9759E+00 S11 -1.5770E-01 5.1968E-02 2.4195E-03 -7.6997E-02 1.3463E-01 -1.1713E-01 5.7166E-02 -1.4654E-02 1.5175E-03 S12 -2.3436E-01 1.7619E-01 -1.6518E-01 1.2447E-01 -7.2694E-02 3.0634E-02 -8.5525E-03 1.3935E-03 -9.9168E-05 S13 -2.5914E-02 2.1504E-02 -7.5016E-03 -1.5261E-03 2.0134E-03 -6.6975E-04 1.1031E-04 -9.1493E-06 2.9977E-07 S14 -6.1627E-02 3.0731E-02 -1.5541E-02 7.4189E-03 -2.8350E-03 7.3459E-04 -1.1637E-04 1.0097E-05 -3.6745E-07

[0206] Table 23

[0207] Table 24 gives the effective focal lengths f1 to f7 of each lens in Example 8, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the object side surface S1 to the imaging surface S17 of the first lens E1, half the diagonal length of the effective pixel area on the imaging surface S17 ImgH, and the maximum half field of view HFOV.

[0208] f1 (mm) 3.98 f7 (mm) 10.90 f2 (mm) 39.67 f (mm) 5.61 f3 (mm) 10.35 TTL (mm) 5.55 f4 (mm) -3.30 ImgH (mm) 2.75 f5 (mm) 28.85 HFOV (°) 26.3 f6 (mm) -5.78

[0209] Table 24

[0210] FIG. 16A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 8 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. FIG. 16B The astigmatism curve of the optical imaging lens of Embodiment 8 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. FIG. 16C The distortion curve of the optical imaging lens of Example 8 is shown, which represents the distortion magnitude value corresponding to different image heights. FIG. 16D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 8 is shown, which represents the deviation of light at different image heights on the imaging plane after passing through the lens. According to FIG. 16A to FIG. 16D It can be seen that the optical imaging lens given in Example 8 can achieve good imaging quality.

[0211] Example 9

[0212] The following is for reference FIG. 17 to FIG. 18D An optical imaging lens according to Embodiment 9 of this application is described. FIG. 17 A schematic diagram of the structure of an optical imaging lens according to Embodiment 9 of this application is shown.

[0213] like FIG. 17 As shown, the optical imaging lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, an aperture stop STO, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an imaging surface S17.

[0214] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being concave and its image-side surface S8 being concave. The fifth lens E5 has positive optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has negative optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through surfaces S1 to S16 and is finally imaged onto the imaging surface S17.

[0215] Table 25 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 9, wherein the units for radius of curvature and thickness are millimeters (mm).

[0216]

[0217]

[0218] Table 25

[0219] As shown in Table 25, in Embodiment 9, the object-side surface and image-side surface of any one of the lenses from the first lens E1 to the seventh lens E7 are aspherical. Table 26 shows the higher-order coefficients that can be used for each aspherical mirror surface in Embodiment 9, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0220] Face No. A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -5.8132E-03 -1.3245E-02 3.5125E-02 -6.1971E-02 6.3049E-02 -3.9185E-02 1.4412E-02 -2.8886E-03 2.3891E-04 S2 2.4771E-02 1.1077E-01 -3.3182E-01 4.8680E-01 -4.0265E-01 1.8580E-01 -4.2815E-02 2.8868E-03 2.9739E-04 S3 2.3421E-02 1.4776E-01 -3.8617E-01 4.7529E-01 -2.5593E-01 -8.3409E-03 7.4911E-02 -3.1831E-02 4.3187E-03 S4 -1.4793E-02 5.0022E-01 -1.5234E+00 2.4653E+00 -2.4158E+00 1.4907E+00 -5.6870E-01 1.2261E-01 -1.1410E-02 S5 -9.3615E-03 4.7934E-01 -1.5413E+00 2.6682E+00 -2.8973E+00 2.0534E+00 -9.2041E-01 2.3507E-01 -2.5877E-02 S6 -1.9721E-02 1.0854E-01 -3.6624E-01 7.7190E-01 -1.0784E+00 1.0159E+00 -6.1390E-01 2.1241E-01 -3.1776E-02 S7 3.5199E-02 1.0823E-01 -2.0236E-01 6.0605E-02 5.4572E-01 -1.1813E+00 1.1164E+00 -5.0814E-01 8.8525E-02 S8 7.4576E-03 8.3971E-01 -7.2531E+00 4.2005E+01 -1.5409E+02 3.5625E+02 -5.0237E+02 3.9410E+02 -1.3174E+02 S9 -1.2789E-01 -3.2870E-01 3.3761E+00 -1.8647E+01 6.3291E+01 -1.3490E+02 1.7518E+02 -1.2631E+02 3.8511E+01 S10 -1.0683E-01 1.5113E-01 -7.9031E-01 3.4636E+00 -9.3529E+00 1.5567E+01 -1.5492E+01 8.4423E+00 -1.9381E+00 S11 -1.5694E-01 4.1425E-02 3.5073E-02 -1.3454E-01 1.9510E-01 -1.5360E-01 6.9707E-02 -1.6995E-02 1.7076E-03 S12 -2.4819E-01 1.9246E-01 -1.8190E-01 1.3779E-01 -8.1346E-02 3.4819E-02 -9.8601E-03 1.6212E-03 -1.1588E-04 S13 -2.2924E-02 1.4521E-02 1.0322E-03 -7.8135E-03 4.8272E-03 -1.4330E-03 2.3272E-04 -1.9821E-05 6.8825E-07 S14 -6.5526E-02 3.1935E-02 -1.7215E-02 9.2484E-03 -3.8458E-03 1.0454E-03 -1.7076E-04 1.5177E-05 -5.6494E-07

[0221] Table 26

[0222] Table 27 gives the effective focal lengths f1 to f7 of each lens in Example 9, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the object side surface S1 to the imaging surface S17 of the first lens E1, half the diagonal length of the effective pixel area on the imaging surface S17 ImgH, and the maximum half field of view HFOV.

[0223] f1 (mm) 3.98 f7 (mm) 10.06 f2 (mm) 40.95 f (mm) 5.61 f3 (mm) 10.36 TTL (mm) 5.55 f4 (mm) -3.40 ImgH (mm) 2.75 f5 (mm) 59.23 HFOV (°) 26.3 f6 (mm) -5.94

[0224] Table 27

[0225] Fig. 18A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 9 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Fig. 18B The astigmatism curve of the optical imaging lens of Embodiment 9 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Fig. 18C The distortion curve of the optical imaging lens of Example 9 is shown, which represents the distortion magnitude value corresponding to different image heights. Fig. 18D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 9 is shown, which represents the deviation of light at different image heights on the imaging plane after passing through the lens. According to... Figs. 18A to 18D It can be seen that the optical imaging lens given in Example 9 can achieve good imaging quality.

[0226] Example 10

[0227] The following is for reference Figs. 19 to 20D An optical imaging lens according to Embodiment 10 of this application is described. Fig. 19 A schematic diagram of the structure of an optical imaging lens according to Embodiment 10 of this application is shown.

[0228] like Fig. 19As shown, the optical imaging lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, an aperture stop STO, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an imaging surface S17.

[0229] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being concave and its image-side surface S8 being concave. The fifth lens E5 has positive optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has negative optical power, with its object-side surface S11 being concave and its image-side surface S12 being concave. The seventh lens E7 has positive optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through surfaces S1 to S16 and is finally imaged onto the imaging surface S17.

[0230] Table 28 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 10, wherein the units of radius of curvature and thickness are millimeters (mm).

[0231]

[0232] Table 28

[0233] As shown in Table 28, in Example 10, the object-side surface and image-side surface of any one of the lenses from the first lens E1 to the seventh lens E7 are aspherical. Table 29 shows the higher-order coefficients that can be used for each aspherical mirror in Example 10, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0234]

[0235]

[0236] Table 29

[0237] Table 30 gives the effective focal lengths f1 to f7 of each lens in Example 10, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the object side S1 to the imaging surface S17 of the first lens E1, half the diagonal length of the effective pixel area on the imaging surface S17 ImgH, and the maximum half field of view HFOV.

[0238] Face No. 3.98 f1 (mm) 11.20 f7 (mm) 38.87 f2 (mm) 5.60 f (mm) 10.15 f3 (mm) 5.55 TTL (mm) -3.63 f4 (mm) 2.75 ImgH (mm) 58.77 f5 (mm) 26.2 HFOV (°) -5.50

[0239] Table 30

[0240] f6 (mm) The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 10 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Fig. 20A The astigmatism curve of the optical imaging lens of Embodiment 10 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Fig. 20B The distortion curve of the optical imaging lens of Embodiment 10 is shown, which represents the distortion magnitude value corresponding to different image heights. Fig. 20C The magnification chromatic aberration curve of the optical imaging lens of Embodiment 10 is shown, which represents the deviation of light at different image heights on the imaging plane after passing through the lens. According to Fig. 20D It can be seen that the optical imaging lens given in Example 10 can achieve good imaging quality.

[0241] Figs. 20A to 20D

[0242] The following is for reference Example 11 An optical imaging lens according to Embodiment 11 of this application is described. Figs. 21 to 22D A schematic diagram of the structure of an optical imaging lens according to Embodiment 11 of this application is shown.

[0243] like Fig. 21 As shown, the optical imaging lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, an aperture stop STO, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an imaging surface S17.

[0244] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being concave and its image-side surface S8 being concave. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has negative optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive optical power, with its object-side surface S13 being concave and its image-side surface S14 being convex. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through surfaces S1 to S16 and is finally imaged onto the imaging surface S17.

[0245] Table 31 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 11, wherein the units of radius of curvature and thickness are millimeters (mm).

[0246]

[0247]

[0248] Table 31

[0249] As shown in Table 31, in Example 11, the object-side surface and image-side surface of any one of the lenses from the first lens E1 to the seventh lens E7 are aspherical. Table 32 shows the higher-order coefficients that can be used for each aspherical mirror in Example 11, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0250] Fig. 21 A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -5.7378E-03 -1.3617E-02 3.4992E-02 -5.9587E-02 5.6598E-02 -3.1715E-02 9.9651E-03 -1.5489E-03 7.8247E-05 S2 1.5006E-02 1.6222E-01 -4.3907E-01 5.8362E-01 -4.1065E-01 1.2879E-01 4.5117E-03 -1.2848E-02 2.2467E-03 S3 9.7187E-03 2.1598E-01 -5.0901E-01 5.2772E-01 -1.1604E-01 -2.4486E-01 2.3136E-01 -8.0648E-02 1.0235E-02 S4 -1.9960E-02 5.6641E-01 -1.8537E+00 3.2187E+00 -3.3397E+00 2.1359E+00 -8.2431E-01 1.7582E-01 -1.5901E-02 S5 -4.3402E-03 5.0976E-01 -1.8034E+00 3.3992E+00 -3.9529E+00 2.9330E+00 -1.3464E+00 3.4622E-01 -3.7940E-02 S6 -1.4956E-02 8.0911E-02 -2.5771E-01 5.1208E-01 -6.8552E-01 6.5181E-01 -4.1397E-01 1.5180E-01 -2.3853E-02 S7 3.2809E-02 9.4203E-02 -1.4909E-01 2.5129E-02 3.7131E-01 -6.4536E-01 4.3652E-01 -8.9953E-02 -1.3033E-02 S8 1.4405E-02 7.3962E-01 -6.4184E+00 3.6925E+01 -1.3391E+02 3.0552E+02 -4.2464E+02 3.2800E+02 -1.0783E+02 S9 -1.3517E-01 -3.9467E-01 4.0442E+00 -2.2151E+01 7.4999E+01 -1.5981E+02 2.0832E+02 -1.5160E+02 4.7014E+01 S10 -9.4039E-02 1.4554E-01 -5.0949E-01 1.9165E+00 -4.5299E+00 6.7086E+00 -5.9901E+00 2.9416E+00 -6.0971E-01 S11 -1.0119E-01 -1.5987E-01 3.3576E-01 -3.6721E-01 2.7420E-01 -1.3688E-01 4.3066E-02 -7.6594E-03 5.8398E-04 S12 -1.4382E-01 -4.7013E-02 1.1817E-01 -1.1853E-01 7.4253E-02 -2.9908E-02 7.4234E-03 -1.0267E-03 6.0256E-05 S13 -1.8399E-02 2.5856E-02 -6.3471E-02 6.7247E-02 -3.7921E-02 1.2437E-02 -2.3831E-03 2.4821E-04 -1.0899E-05 S14 -6.4469E-02 3.3640E-02 -2.7730E-02 2.0247E-02 -8.6600E-03 2.0854E-03 -2.7733E-04 1.8903E-05 -5.2220E-07

[0251] Table 32

[0252] Table 33 gives the effective focal lengths f1 to f7 of each lens in Example 11, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the object side surface S1 to the imaging surface S17 of the first lens E1, half the diagonal length of the effective pixel area on the imaging surface S17 ImgH, and the maximum half field of view HFOV.

[0253]

[0254]

[0255] Table 33

[0256] Face No. The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 11 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Fig. 22A The astigmatism curve of the optical imaging lens of Embodiment 11 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Fig. 22B The distortion curve of the optical imaging lens of Embodiment 11 is shown, which represents the distortion magnitude value corresponding to different image heights. Fig. 22C The magnification chromatic aberration curve of the optical imaging lens of Embodiment 11 is shown, which represents the deviation of light at different image heights on the imaging plane after passing through the lens. According to Fig. 22D It can be seen that the optical imaging lens given in Example 11 can achieve good imaging quality.

[0257] In summary, Examples 1 to 11 satisfy the relationships shown in Table 34.

[0258] Figs. 22A to 22D 1 2 3 4 5 6 7 8 9 10 11 Conditional Expression \ Example 1.38 1.60 1.41 1.57 1.36 1.32 1.47 1.25 1.28 1.05 1.50 R8 / R12 -1.53 -1.46 -1.55 -1.51 -2.26 -1.76 -1.49 -1.45 -1.49 -1.38 -1.89 f6 / f1 -6.39 -7.42 -6.66 -8.20 -6.50 -7.70 -7.78 -6.52 -7.66 -6.18 -7.47 R7 / R1 0.37 0.38 0.35 0.38 0.37 0.21 0.37 0.36 0.37 0.37 0.37 R1 / R3 0.27 0.36 0.00 0.28 0.27 0.22 0.27 0.27 0.27 0.28 0.29 f123 / f3 -1.24 -1.01 -1.18 -0.99 -1.05 -1.26 -1.09 -2.39 -2.56 -1.14 -1.04 SAG42 / SAG51 0.32 0.38 0.33 0.36 0.51 0.34 0.36 0.32 0.26 0.39 0.33 f45 / f67 3.08 2.81 3.02 2.65 2.94 3.00 2.77 2.71 2.56 3.27 3.37 T56 / T67 2.39 2.56 2.45 2.38 2.55 2.55 2.47 2.48 2.25 2.49 2.41 T56 / (T12+T23) / 5 0.96 0.84 1.11 0.95 1.35 0.75 0.91 0.78 0.78 0.92 1.12 (CT2+CT5) / CT7 HFOV (°) f123 / f3 SAG42 / SAG51 f45 / f67 T56 / T67 T56 / (T12+T23) / 5 (CT2+CT5) / CT7 HFOV (°) f123 / f3 SAG42 / SAG51 f45 / f67 T56 / T67 T56 / (T12+T23) / 5 (CT2+CT5) / CT7 HFOV (°) f123 / f3 SAG42 / SAG51 f45 / f67 T56 / T67 T56 / (T12+T23) / 5 (CT2+CT5) / CT7 HFOV (°) f123 / f3 SAG42 / SAG51 f45 / f67 T56 / T67 T56 / (T12+T23) / 5 (CT2+CT5) / CT7 HFOV (°) f123 / f3 SAG42 / SAG51 f45 26.3 26.3 26.3 26.3 26.3 26.2 23.9 26.3 26.3 26.2 26.3

[0259] Table 34

[0260] This application also provides an imaging device, wherein the electronic photosensitive element can be a photocoupled device (CCD) or a complementary metal oxide semiconductor device (CMOS). The imaging device can be a stand-alone imaging device such as a digital camera, or an imaging module integrated into a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens described above.

[0261] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. An optical imaging lens, comprising, in sequence along the optical axis from the object side to the image side: The first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens, It is characterized by, The first lens has positive refractive power, and its object side surface is convex; The second lens has refractive power, and its object side surface is convex; The third lens has refractive power; The fourth lens has negative refractive power, and both its object side surface and its image side surface are concave; The fifth lens has refractive power; The sixth lens has negative refractive power, and its image side surface is concave; The seventh lens has refractive power; The radius of curvature R8 of the image side surface of the fourth lens and the radius of curvature R12 of the image side surface of the sixth lens satisfy 1.05≤R8 / R12≤1.60; At most one of the second lens, the third lens, the fifth lens and the seventh lens has negative refractive power; The number of lenses with refractive power in the optical imaging lens is seven; The combined focal length f123 of the first lens, the second lens and the third lens and the effective focal length f3 of the third lens satisfy 0 2.The optical imaging lens according to claim 1, wherein, The effective focal length f6 of the sixth lens and the effective focal length f1 of the first lens satisfy -2.26≤f6 / f1≤-1.

38. 3.The optical imaging lens according to claim 1, wherein, The radius of curvature R1 of the object side surface of the first lens and the radius of curvature R3 of the object side surface of the second lens satisfy 0.21≤R1 / R3≤0.

38. 4.The optical imaging lens according to claim 1, wherein, The radius of curvature R7 of the object side surface of the fourth lens and the radius of curvature R1 of the object side surface of the first lens satisfy -8.20≤R7 / R1≤-6.

18.

5. The optical imaging lens according to claim 1, characterized in that, The on-axis distance SAG42 from the intersection of the image side surface of the fourth lens and the optical axis to the effective radius vertex of the image side surface of the fourth lens and the on-axis distance SAG51 from 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 satisfy -2.56≤SAG42 / SAG51≤-0.

99. 6.The optical imaging lens according to claim 1, wherein, The combined focal length f45 of the fourth lens and the fifth lens and the combined focal length f67 of the sixth lens and the seventh lens satisfy 0.26≤f45 / f67≤0.

51. 7.The optical imaging lens according to claim 1, wherein, The interval distance T56 of the fifth lens and the sixth lens on the optical axis and the interval distance T67 of the sixth lens and the seventh lens on the optical axis satisfy 2.56≤T56 / T67≤3.

37. 8.The optical imaging lens according to claim 7, wherein, The interval distance T56 of the fifth lens and the sixth lens on the optical axis, the interval distance T12 of the first lens and the second lens on the optical axis and the interval distance T23 of the second lens and the third lens on the optical axis satisfy 2.25≤T56 / (T12+T23) / 5≤2.

56. 9.The optical imaging lens according to claim 1, wherein, The central thickness CT2 of the second lens on the optical axis, the central thickness CT5 of the fifth lens on the optical axis and the central thickness CT7 of the seventh lens on the optical axis satisfy 0.75≤(CT2+CT5) / CT7≤1.

35.

10. The optical imaging lens according to any one of claims 1-9, wherein, The maximum half field of view HFOV of the optical imaging lens satisfies 23.9°≤HFOV≤26.3°.

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