Optical imaging lens

Abstract

The present application discloses an optical imaging lens, which includes, in order from the object side to the image side along the optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens having optical power. The first lens has negative optical power, and its object side surface is concave, and its image side surface is convex; and the third lens has negative optical power. The distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis and the half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens ImgH satisfy: TTL / ImgH≤1.4.

Description

Technical Field

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

[0002] With the rapid development of electronic products, the application of optical imaging lenses is becoming more and more extensive. As electronic products gradually tend to be thinner and lighter, their optical imaging lenses must not only have good image quality, but also have a thin and light appearance, so as to effectively reduce product costs and be more user-friendly.

[0003] At present, most of the photosensitive elements used in optical imaging lenses on the market are charge coupled devices (CCD) or complementary metal-oxide semiconductor devices (CMOS Sensor). With the advancement of semiconductor process technology, the pixel size of photosensitive elements continues to decrease, making the optical imaging lenses installed in electronic products such as mobile phones or digital cameras gradually develop in the fields of miniaturization, large field of view, and high pixel.

[0004] In order to meet the requirements of high pixels and a large field of view, common optical imaging lenses usually need to adopt a large-aperture configuration, which results in a longer lens size, making it difficult to match the requirements of a high-pixel photosensitive chip. In addition, in order to further increase the field of view, it often leads to increased distortion, that is, the main light emission angle is too large, making the lens resolution insufficient. In order to meet the development needs of the market, optical imaging lenses need to shorten the total length of the lens as much as possible and reduce the number of lenses, but this will reduce the design freedom, increase the design difficulty, and make it difficult to meet the high-quality imaging needs. Summary of the invention

[0005] On one hand, the present application provides an optical imaging lens, which includes, in order from the object side to the image side along the optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens with optical power; the first lens has negative optical power, and its object-side surface is concave, and its image-side surface is convex; the third lens has negative optical power; and a distance TTL from the object-side surface of the first lens to an imaging plane of the optical imaging lens on the optical axis and a half of the diagonal length of an effective pixel area on the imaging plane of the optical imaging lens ImgH can satisfy the following: TTL / ImgH≤1.4.

[0006] In one embodiment, there is at least one aspherical mirror surface from the object side surface of the first lens to the image side surface of the seventh lens.

[0007] In one embodiment, the effective focal length f2 of the second lens, the curvature radius R3 of the object-side surface of the second lens, and the curvature radius R4 of the image-side surface of the second lens may satisfy: 3.0≤|f2 / R3+f2 / R4|≤4.0.

[0008] In one embodiment, a curvature radius R9 of the object-side surface of the fifth lens and a curvature radius R10 of the image-side surface of the fifth lens may satisfy: 1.5≤(R9+R10) / R10≤2.0.

[0009] In one embodiment, a center thickness CT2 of the second lens on the optical axis, a center thickness CT3 of the third lens on the optical axis, and a spacing distance T23 between the second lens and the third lens on the optical axis may satisfy: 1.5≤(CT2+CT3) / T23≤2.5.

[0010] In one embodiment, the total effective focal length f of the optical imaging lens and the combined focal length f123 of the first lens, the second lens and the third lens may satisfy: 2.5≤f123 / f≤5.0.

[0011] In one embodiment, the center thickness CT5 of the fifth lens on the optical axis, the distance SAG51 from the intersection of the object side surface of the fifth lens and the optical axis to the vertex of the effective radius of the object side surface of the fifth lens on the optical axis, and the distance SAG52 from the intersection of the image side surface of the fifth lens and the optical axis to the vertex of the effective radius of the image side surface of the fifth lens on the optical axis may satisfy: 3.2≤|(SAG51+SAG52) / CT5|≤5.5.

[0012] In one embodiment, a curvature radius R9 of the object-side surface of the fifth lens, a curvature radius R10 of the image-side surface of the fifth lens, and an edge thickness ET5 of the fifth lens may satisfy: 3.0≤|(R9+R10) / ET5|≤4.2.

[0013] In one embodiment, a curvature radius R3 of the object-side surface of the second lens, a curvature radius R4 of the image-side surface of the second lens, and a combined focal length f12 of the first lens and the second lens may satisfy: 3.8≤f12 / R3+f12 / R4≤4.8.

[0014] In one embodiment, a curvature radius R14 of the image side surface of the seventh lens, a distance SAG71 from the intersection of the object side surface of the seventh lens and the optical axis to the vertex of the effective radius of the object side surface of the seventh lens on the optical axis, and a distance SAG72 from the intersection of the image side surface of the seventh lens and the optical axis to the vertex of the effective radius of the image side surface of the seventh lens on the optical axis may satisfy: 4.0≤|R14 / SAG71+R14 / SAG72|≤8.0.

[0015] In one embodiment, the effective focal length f4 of the fourth lens and half of the maximum field of view Semi-FOV of the optical imaging lens may satisfy: |f4×tan(Semi-FOV)|<6.0mm.

[0016] In one embodiment, the distance TTL from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis, the total effective focal length f of the optical imaging lens, and half of the maximum field of view Semi-FOV of the optical imaging lens may satisfy: 16 mm 2 ≤TTL×f / tan(Semi-FOV)≤18mm 2 .

[0017] In one embodiment, a center thickness CT6 of the sixth lens on the optical axis and a sum ΣCT of center thicknesses of the first to seventh lenses on the optical axis may satisfy: CT6 / ΣCT≤0.3.

[0018] In one embodiment, the sum ΣCT of the center thicknesses of the first to seventh lenses on the optical axis and the sum ΣAT of the spacing distances between any two adjacent lenses of the first to seventh lenses on the optical axis may satisfy: 1.8≤ΣCT / ΣAT≤3.0.

[0019] On the other hand, the present application provides an optical imaging lens, which includes, in order from the object side to the image side along the optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens with optical power; the first lens has negative optical power, and its object-side surface is concave, and its image-side surface is convex; the fourth lens has positive optical power; and a distance TTL from the object-side surface of the first lens to an imaging plane of the optical imaging lens on the optical axis and a half of the diagonal length of an effective pixel area on the imaging plane of the optical imaging lens ImgH can satisfy the following: TTL / ImgH≤1.35.

[0020] In one embodiment, the effective focal length f2 of the second lens, the curvature radius R3 of the object-side surface of the second lens, and the curvature radius R4 of the image-side surface of the second lens may satisfy: 3.0≤|f2 / R3+f2 / R4|≤4.0.

[0021] In one embodiment, a curvature radius R9 of the object-side surface of the fifth lens and a curvature radius R10 of the image-side surface of the fifth lens may satisfy: 1.5≤(R9+R10) / R10≤2.0.

[0022] In one embodiment, a center thickness CT2 of the second lens on the optical axis, a center thickness CT3 of the third lens on the optical axis, and a spacing distance T23 between the second lens and the third lens on the optical axis may satisfy: 1.5≤(CT2+CT3) / T23≤2.5.

[0023] In one embodiment, the total effective focal length f of the optical imaging lens and the combined focal length f123 of the first lens, the second lens and the third lens may satisfy: 2.5≤f123 / f≤5.0.

[0024] In one embodiment, the center thickness CT5 of the fifth lens on the optical axis, the distance SAG51 from the intersection of the object side surface of the fifth lens and the optical axis to the vertex of the effective radius of the object side surface of the fifth lens on the optical axis, and the distance SAG52 from the intersection of the image side surface of the fifth lens and the optical axis to the vertex of the effective radius of the image side surface of the fifth lens on the optical axis may satisfy: 3.2≤|(SAG51+SAG52) / CT5|≤5.5.

[0025] In one embodiment, a curvature radius R9 of the object-side surface of the fifth lens, a curvature radius R10 of the image-side surface of the fifth lens, and an edge thickness ET5 of the fifth lens may satisfy: 3.0≤|(R9+R10) / ET5|≤4.2.

[0026] In one embodiment, a curvature radius R3 of the object-side surface of the second lens, a curvature radius R4 of the image-side surface of the second lens, and a combined focal length f12 of the first lens and the second lens may satisfy: 3.8≤f12 / R3+f12 / R4≤4.8.

[0027] In one embodiment, a curvature radius R14 of the image side surface of the seventh lens, a distance SAG71 from the intersection of the object side surface of the seventh lens and the optical axis to the vertex of the effective radius of the object side surface of the seventh lens on the optical axis, and a distance SAG72 from the intersection of the image side surface of the seventh lens and the optical axis to the vertex of the effective radius of the image side surface of the seventh lens on the optical axis may satisfy: 4.0≤|R14 / SAG71+R14 / SAG72|≤8.0.

[0028] In one embodiment, the effective focal length f4 of the fourth lens and half of the maximum field of view Semi-FOV of the optical imaging lens may satisfy: |f4×tan(Semi-FOV)|<6.0mm.

[0029] In one embodiment, the distance TTL from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis, the total effective focal length f of the optical imaging lens, and half of the maximum field of view Semi-FOV of the optical imaging lens may satisfy: 16 mm 2 ≤TTL×f / tan(Semi-FOV)≤18mm 2 .

[0030] In one embodiment, a center thickness CT6 of the sixth lens on the optical axis and a sum ΣCT of center thicknesses of the first to seventh lenses on the optical axis may satisfy: CT6 / ΣCT≤0.3.

[0031] In one embodiment, the sum ΣCT of the center thicknesses of the first to seventh lenses on the optical axis and the sum ΣAT of the spacing distances between any two adjacent lenses of the first to seventh lenses on the optical axis may satisfy: 1.8≤ΣCT / ΣAT≤3.0.

[0032] On the other hand, the present application provides an optical imaging lens. The optical imaging lens includes, in order from the object side to the image side along the optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens with optical power; the first lens has negative optical power, and its object side surface is concave and its image side surface is convex; the third lens has negative optical power; and the effective focal length f4 of the fourth lens and half of the maximum field of view Semi-FOV of the optical imaging lens can satisfy: |f4×tan(Semi-FOV)|<6.0mm.

[0033] In one embodiment, the effective focal length f2 of the second lens, the curvature radius R3 of the object-side surface of the second lens, and the curvature radius R4 of the image-side surface of the second lens may satisfy: 3.0≤|f2 / R3+f2 / R4|≤4.0.

[0034] In one embodiment, a curvature radius R9 of the object-side surface of the fifth lens and a curvature radius R10 of the image-side surface of the fifth lens may satisfy: 1.5≤(R9+R10) / R10≤2.0.

[0035] In one embodiment, a center thickness CT2 of the second lens on the optical axis, a center thickness CT3 of the third lens on the optical axis, and a spacing distance T23 between the second lens and the third lens on the optical axis may satisfy: 1.5≤(CT2+CT3) / T23≤2.5.

[0036] In one embodiment, the total effective focal length f of the optical imaging lens and the combined focal length f123 of the first lens, the second lens and the third lens may satisfy: 2.5≤f123 / f≤5.0.

[0037] In one embodiment, the center thickness CT5 of the fifth lens on the optical axis, the distance SAG51 from the intersection of the object side surface of the fifth lens and the optical axis to the vertex of the effective radius of the object side surface of the fifth lens on the optical axis, and the distance SAG52 from the intersection of the image side surface of the fifth lens and the optical axis to the vertex of the effective radius of the image side surface of the fifth lens on the optical axis may satisfy: 3.2≤|(SAG51+SAG52) / CT5|≤5.5.

[0038] In one embodiment, a curvature radius R9 of the object-side surface of the fifth lens, a curvature radius R10 of the image-side surface of the fifth lens, and an edge thickness ET5 of the fifth lens may satisfy: 3.0≤|(R9+R10) / ET5|≤4.2.

[0039] In one embodiment, a curvature radius R3 of the object-side surface of the second lens, a curvature radius R4 of the image-side surface of the second lens, and a combined focal length f12 of the first lens and the second lens may satisfy: 3.8≤f12 / R3+f12 / R4≤4.8.

[0040] In one embodiment, a curvature radius R14 of the image side surface of the seventh lens, a distance SAG71 from the intersection of the object side surface of the seventh lens and the optical axis to the vertex of the effective radius of the object side surface of the seventh lens on the optical axis, and a distance SAG72 from the intersection of the image side surface of the seventh lens and the optical axis to the vertex of the effective radius of the image side surface of the seventh lens on the optical axis may satisfy: 4.0≤|R14 / SAG71+R14 / SAG72|≤8.0.

[0041] In one embodiment, the distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis and half the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens ImgH may satisfy: TTL / ImgH≤1.35.

[0042] In one embodiment, the distance TTL from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis, the total effective focal length f of the optical imaging lens, and half of the maximum field of view Semi-FOV of the optical imaging lens may satisfy: 16 mm 2 ≤TTL×f / tan(Semi-FOV)≤18mm 2 .

[0043] In one embodiment, a center thickness CT6 of the sixth lens on the optical axis and a sum ΣCT of center thicknesses of the first to seventh lenses on the optical axis may satisfy: CT6 / ΣCT≤0.3.

[0044] In one embodiment, the sum ΣCT of the center thicknesses of the first to seventh lenses on the optical axis and the sum ΣAT of the spacing distances between any two adjacent lenses of the first to seventh lenses on the optical axis may satisfy: 1.8≤ΣCT / ΣAT≤3.0.

[0045] The present application provides an optical imaging lens which is applicable to lightweight electronic products, has a light weight, a large aperture, is miniaturized, and has good imaging quality by reasonably allocating optical focal length and optimizing optical parameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0047] Figure 1 A schematic structural diagram of an optical imaging lens according to Embodiment 1 of the present application is shown;

[0048] FIG. 2A to FIG. 2D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 1 are respectively shown;

[0049] Figure 3 A schematic structural diagram of an optical imaging lens according to Embodiment 2 of the present application is shown;

[0050] FIG. 4A to FIG. 4D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 2 are respectively shown;

[0051] Figure 5 A schematic structural diagram of an optical imaging lens according to Embodiment 3 of the present application is shown;

[0052] FIG. 6A to FIG. 6D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 3 are respectively shown;

[0053] Figure 7 A schematic structural diagram of an optical imaging lens according to Embodiment 4 of the present application is shown;

[0054] FIG. 8A to FIG. 8D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 4 are respectively shown;

[0055] Fig. 9 A schematic structural diagram of an optical imaging lens according to Embodiment 5 of the present application is shown;

[0056] FIG. 10A to FIG. 10D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 5 are respectively shown;

[0057] Fig.11 A schematic structural diagram of an optical imaging lens according to Embodiment 6 of the present application is shown;

[0058] FIG. 12A to FIG. 12D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 6 are respectively shown;

[0059] Fig.13 A schematic structural diagram of an optical imaging lens according to Embodiment 7 of the present application is shown;

[0060] FIG. 14A to FIG. 14D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 7 are respectively shown;

[0061] Fig.15 shows a schematic structural diagram of an optical imaging lens according to Embodiment 8 of the present application; and

[0062] FIG. 16A to FIG. 16D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 8 are respectively shown. DETAILED DESCRIPTION

[0063] In order to better understand the present application, a more detailed description will be made of various aspects of the present application with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of exemplary embodiments of the present application, and are not intended to limit the scope of the present application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0064] It should be noted that in this specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the features. Therefore, without departing from the teaching of the present application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0065] In the drawings, the thickness, size and shape of the lenses have been slightly exaggerated for ease of explanation. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to the shapes of the spherical or aspherical surfaces shown in the drawings. The drawings are only examples and are not drawn strictly to scale.

[0066] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object is called the object side of the lens, and the surface of each lens closest to the imaging plane is called the image side of the lens.

[0067] It should also be understood that the terms "comprises", "including", "having", "includes" and / or "comprising", when used in this specification, indicate the presence of the stated features, elements and / or components, but do not exclude the presence or addition of one or more other features, elements, components and / or combinations thereof. In addition, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire listed features rather than modifying the individual elements in the list. In addition, when describing embodiments of the present application, "may" is used to mean "one or more embodiments of the present application". And, the term "exemplary" is intended to refer to an example or illustration.

[0068] Unless otherwise defined, all terms (including technical terms and scientific terms) used in this article have the same meaning as those commonly understood by ordinary technicians in the field to which this application belongs. It should also be understood that terms (such as terms defined in commonly used dictionaries) should be interpreted as having the same meaning as their meaning in the context of the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined in this article.

[0069] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0070] The features, principles and other aspects of the present application are described in detail below.

[0071] The optical imaging lens according to the exemplary embodiment of the present application may include seven lenses with optical power, namely, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens. The seven lenses are arranged in sequence from the object side to the image side along the optical axis. Any two adjacent lenses from the first lens to the seventh lens may have a spacing distance between them.

[0072] In an exemplary embodiment, the first lens may have negative optical power, with its object side surface being concave and its image side surface being convex. Such optical power and surface shape of the first lens may better balance the field curvature of each field of view.

[0073] In an exemplary embodiment, the third lens may have negative optical power. The third lens having negative optical power is beneficial to reducing the distortion of the off-axis field of view and obtaining a better imaging effect.

[0074] In an exemplary embodiment, the fourth lens may have positive optical power. The fourth lens having positive optical power is beneficial to reducing the axial chromatic aberration of the optical imaging lens and to obtaining a larger aperture angle.

[0075] In an exemplary embodiment, by reasonably setting the optical focal length and surface characteristics of the first lens to the seventh lens, the imaging performance of the optical imaging lens can be ensured while also enabling the optical imaging lens to have characteristics such as high pixels, large aperture, and large field of view.

[0076] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: TTL / ImgH≤1.4, wherein TTL is the distance from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis, and ImgH is half the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens. More specifically, TTL and ImgH may further satisfy: TTL / ImgH≤1.35. Satisfying TTL / ImgH≤1.4 is conducive to making the optical imaging lens have characteristics such as ultra-thinness and miniaturization.

[0077] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 3.0≤|f2 / R3+f2 / R4|≤4.0, wherein f2 is the effective focal length of the second lens, R3 is the radius of curvature of the object side surface of the second lens, and R4 is the radius of curvature of the image side surface of the second lens. More specifically, f2, R3, and R4 may further satisfy: 3.4≤|f2 / R3+f2 / R4|≤3.8. Satisfying 3.0≤|f2 / R3+f2 / R4|≤4.0 is beneficial for correcting the spherical aberration and axial chromatic aberration of the optical imaging lens, improving the imaging quality, and is beneficial for the optical imaging lens to have characteristics such as a large aperture and a large field of view.

[0078] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1.5≤(R9+R10) / R10≤2.0, wherein R9 is the radius of curvature of the object side surface of the fifth lens, and R10 is the radius of curvature of the image side surface of the fifth lens. More specifically, R9 and R10 may further satisfy: 1.6≤(R9+R10) / R10≤1.9. Satisfying 1.5≤(R9+R10) / R10≤2.0 is conducive to correcting the astigmatism of the off-axis field of view of the optical imaging lens and improving the imaging quality.

[0079] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1.5≤(CT2+CT3) / T23≤2.5, wherein CT2 is the center thickness of the second lens on the optical axis, CT3 is the center thickness of the third lens on the optical axis, and T23 is the spacing distance between the second lens and the third lens on the optical axis. More specifically, CT2, CT3, and T23 may further satisfy: 1.7≤(CT2+CT3) / T23≤2.2. Satisfying 1.5≤(CT2+CT3) / T23≤2.5 is conducive to ensuring the compactness of the optical imaging lens structure, while helping to reduce the sensitivity of the spacing distance to field curvature, and also helping to improve the assembly yield of the lens.

[0080] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 2.5≤f123 / f≤5.0, where f is the total effective focal length of the optical imaging lens, and f123 is the combined focal length of the first lens, the second lens, and the third lens. More specifically, f123 and f may further satisfy: 2.6≤f123 / f≤4.8. Satisfying 2.5≤f123 / f≤5.0 can effectively control the astigmatism contribution of the object side of the first lens and the image side of the third lens, thereby reasonably and effectively controlling the image quality within the central field aperture band of the optical imaging lens.

[0081] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 3.2≤|(SAG51+SAG52) / CT5|≤5.5, wherein CT5 is the center thickness of the fifth lens on the optical axis, SAG51 is the 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 on the optical axis, and SAG52 is the distance from the intersection of the image side surface of the fifth lens and the optical axis to the effective radius vertex of the image side surface of the fifth lens on the optical axis. More specifically, SAG51, SAG52 and CT5 may further satisfy: 3.4≤|(SAG51+SAG52) / CT5|≤5.5. Satisfying 3.2≤|(SAG51+SAG52) / CT5|≤5.5 is conducive to the smooth transition of the surface shape of the fifth lens and to the molding of the fifth lens, so that the fifth lens meets the requirements of processability and manufacturability.

[0082] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 3.0≤|(R9+R10) / ET5|≤4.2, wherein R9 is the radius of curvature of the object side of the fifth lens, R10 is the radius of curvature of the image side of the fifth lens, and ET5 is the edge thickness of the fifth lens. More specifically, R9, R10, and ET5 may further satisfy: 3.1≤|(R9+R10) / ET5|≤4.2. Satisfying 3.0≤|(R9+R10) / ET5|≤4.2 can enable the fifth lens to meet the requirements of processability and manufacturability, while being beneficial to correcting the field curvature and astigmatism of the optical imaging lens and improving the lens resolution.

[0083] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 3.8≤f12 / R3+f12 / R4≤4.8, wherein R3 is the radius of curvature of the object side surface of the second lens, R4 is the radius of curvature of the image side surface of the second lens, and f12 is the combined focal length of the first lens and the second lens. More specifically, f12, R3, and R4 may further satisfy: 3.9≤f12 / R3+f12 / R4≤4.8. Satisfying 3.8≤f12 / R3+f12 / R4≤4.8 is beneficial to correcting the axial chromatic aberration of the optical imaging lens, and is beneficial to making the optical imaging lens have characteristics such as a large aperture.

[0084] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 4.0≤|R14 / SAG71+R14 / SAG72|≤8.0, wherein R14 is the radius of curvature of the image side surface of the seventh lens, SAG71 is the distance from the intersection of the object side surface of the seventh lens and the optical axis to the effective radius vertex of the object side surface of the seventh lens on the optical axis, and SAG72 is the distance from the intersection of the image side surface of the seventh lens and the optical axis to the effective radius vertex of the image side surface of the seventh lens on the optical axis. More specifically, R14, SAG71 and SAG72 may further satisfy: 4.0≤|R14 / SAG71+R14 / SAG72|≤7.8. Satisfying 4.0≤|R14 / SAG71+R14 / SAG72|≤8.0 is conducive to controlling the surface shape of the seventh lens from being excessively curved, and meeting its machinability and processability requirements.

[0085] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: |f4×tan(Semi-FOV)|<6.0mm, where f4 is the effective focal length of the fourth lens, and Semi-FOV is half of the maximum field of view of the optical imaging lens. More specifically, f4 and Semi-FOV may further satisfy: |f4×tan(Semi-FOV)|<5.3mm. Satisfying |f4×tan(Semi-FOV)|<6.0mm is conducive to obtaining a larger field of view, and at the same time is conducive to reducing the total effective focal length of the optical imaging lens, so that the lens obtains an imaging effect with a large field of view and small distortion.

[0086] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 16mm 2 ≤TTL×f / tan(Semi-FOV)≤18mm 2 , where TTL is the distance from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis, f is the total effective focal length of the optical imaging lens, and Semi-FOV is half of the maximum field of view of the optical imaging lens. Satisfy 16mm 2 ≤TTL×f / tan(Semi-FOV)≤18mm 2This is conducive to making the optical imaging lens have characteristics such as a large field of view and ultra-thinness, and is conducive to ensuring the compactness of the structure of the optical imaging lens.

[0087] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: CT6 / ∑CT≤0.3, wherein CT6 is the center thickness of the sixth lens on the optical axis, and ∑CT is the sum of the center thicknesses of the first lens to the seventh lens on the optical axis. More specifically, CT6 and ∑CT may further satisfy: CT6 / ∑CT≤0.28. Satisfying CT6 / ∑CT≤0.3 can help correct the field curvature and distortion of the off-axis field of view of the optical imaging lens while satisfying the requirements of processability and formability.

[0088] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1.8≤∑CT / ∑AT≤3.0, wherein ∑CT is the sum of the center thicknesses of the first lens to the seventh lens on the optical axis, and ∑AT is the sum of the spacing distances between any two adjacent lenses of the first lens to the seventh lens on the optical axis. More specifically, ∑CT and ∑AT may further satisfy: 1.8≤∑CT / ∑AT≤2.8. Satisfying 1.8≤∑CT / ∑AT≤3.0 is conducive to making the structure of the optical imaging lens more compact and conducive to meeting the ultra-thin requirements.

[0089] In an exemplary embodiment, the optical imaging lens according to the present application further includes an aperture arranged between the second lens and the third lens. Optionally, the above-mentioned optical imaging lens may further include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging surface. The present application proposes an optical imaging lens with the characteristics of miniaturization, large aperture, ultra-thinness and high imaging quality. The optical imaging lens according to the above-mentioned embodiment of the present application may adopt multiple lenses, such as the seven lenses mentioned above. By reasonably allocating the optical power, surface shape, center thickness of each lens and the on-axis spacing between each lens, the incident light can be effectively converged, the total optical length of the imaging lens can be reduced, and the processability of the imaging lens can be improved, so that the optical imaging lens is more conducive to production and processing.

[0090] In the embodiment of the present application, at least one of the mirror surfaces of each lens is an aspherical mirror surface, that is, at least one of the mirror surfaces from the object side of the first lens to the image side of the seventh lens is an aspherical mirror surface. The characteristic of the aspherical lens is that the curvature changes continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens with a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has a better curvature radius characteristic, and has the advantages of improving distortion aberration and improving astigmatism aberration. After adopting an aspherical lens, the aberration occurring during imaging can be eliminated as much as possible, thereby improving the imaging quality. Optionally, at least one of the object side and image side of each lens in the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens is an aspherical mirror surface. Optionally, the object side and image side of each lens in the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens are all aspherical mirror surfaces.

[0091] However, those skilled in the art should understand that, without departing from the technical solution claimed in the present application, the number of lenses constituting the optical imaging lens can be changed to obtain the various results and advantages described in this specification. For example, although seven lenses are described as an example in the embodiments, the optical imaging lens is not limited to including seven lenses. If necessary, the optical imaging lens may also include other numbers of lenses.

[0092] Specific embodiments of the optical imaging lens applicable to the above-mentioned embodiments are further described below with reference to the accompanying drawings.

[0093] Example 1

[0094] The following reference Figures 1 to 2D An optical imaging lens according to Embodiment 1 of the present application is described. Figure 1 A schematic structural diagram of an optical imaging lens according to Embodiment 1 of the present application is shown.

[0095] like Figure 1 As shown, the optical imaging lens includes, from the object side to the image side, a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8 and an imaging surface S17.

[0096] The first lens E1 has negative power, and its object side surface S1 is concave, and its image side surface S2 is convex. The second lens E2 has positive power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has negative power, and its object side surface S5 is concave, and its image side surface S6 is concave. The fourth lens E4 has positive power, and its object side surface S7 is convex, and its image side surface S8 is convex. The fifth lens E5 has negative positive power, and its object side surface S9 is concave, and its image side surface S10 is convex. The sixth lens E6 has positive power, and its object side surface S11 is convex, and its image side surface S12 is convex. The seventh lens E7 has negative power, and its object side surface S13 is convex, and its image side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. The light from the object passes through each surface S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0097] Table 1 shows the basic parameters of the optical imaging lens of Example 1, wherein the units of the radius of curvature, thickness / distance and focal length are all millimeters (mm).

[0098]

[0099] Table 1

[0100] In this example, the total effective focal length f of the optical imaging lens is 3.59 mm, the total length TTL of the optical imaging lens (i.e., the distance from the object-side surface S1 of the first lens E1 to the imaging surface S17 of the optical imaging lens on the optical axis) is 6.35 mm, half of the diagonal length of the effective pixel area on the imaging surface S17 of the optical imaging lens ImgH is 4.74 mm, half of the maximum field of view Semi-FOV of the optical imaging lens is 52.82°, and the aperture value Fno of the optical imaging lens is 1.95.

[0101] In Example 1, the object side surface and the image side surface of any lens among the first lens E1 to the seventh lens E7 are both aspherical surfaces, and the surface shape x of each aspherical lens can be defined by but not limited to the following aspherical surface formula:

[0102]

[0103] Wherein, x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at a height of h along the optical axis; c is the paraxial curvature of the aspheric surface, c=1 / R (i.e., the paraxial curvature c is the reciprocal of the curvature radius R in Table 1 above); k is the cone coefficient; Ai is the correction coefficient of the i-th order of the aspheric surface. The following Tables 2-1 and 2-2 give the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A56, A57, A58, A59, A60, A61, A71, A72, A73, A74, A75, A76, A77, A8, A9, A10, A11, A12, A13, A14, A15 10 , A 12 , A 14 , A 16 , A18 , A 20 , A 22 , A 24 , A 26 , A 28 and A 30 .

[0104]

[0105]

[0106] Table 2-1

[0107] Face number A18 A20 A22 A24 A26 A28 A30 S1 -2.0924E-04 -1.1552E-04 -4.2460E-05 -1.7387E-05 0.0000E+00 0.0000E+00 0.0000E+00 S2 -1.0181E-03 -4.6755E-04 -1.9526E-04 -4.3718E-05 0.0000E+00 0.0000E+00 0.0000E+00 S3 -1.2450E-04 -2.1023E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 -2.4682E-04 -5.6560E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 9.2945E-06 -1.5378E-05 1.1653E-06 7.5928E-07 0.0000E+00 0.0000E+00 0.0000E+00 S6 -9.3389E-05 -1.1563E-04 -1.4098E-05 -1.1211E-05 0.0000E+00 0.0000E+00 0.0000E+00 S7 -1.5686E-05 -6.8361E-05 8.5142E-06 -2.1731E-05 -6.6559E-06 0.0000E+00 0.0000E+00 S8 4.7826E-04 5.0341E-05 -1.0703E-04 -6.5602E-05 -2.2385E-05 0.0000E+00 0.0000E+00 S9 -7.6670E-05 3.5217E-04 1.7807E-05 1.2665E-04 2.6279E-05 0.0000E+00 0.0000E+00 S10 -2.2401E-04 -1.7844E-04 -3.7287E-04 5.4268E-05 -9.7477E-05 0.0000E+00 0.0000E+00 S11 7.1987E-03 -1.4927E-03 4.5807E-03 3.1274E-03 5.7353E-03 4.1195E-03 1.4941E-03 S12 1.9858E-03 -1.8871E-02 -6.6404E-03 -2.4127E-03 7.4044E-03 2.0653E-03 1.1571E-04 S13 9.8516E-03 4.9165E-02 1.2461E-02 -1.6413E-02 -7.5871E-03 -1.5035E-02 -1.0755E-02 S14 -2.4047E-02 -8.9933E-03 1.6186E-02 1.4070E-02 -7.0102E-03 -1.4560E-02 -7.4394E-03

[0108] Table 2-2

[0109] Figure 2A The axial chromatic aberration curve of the optical imaging lens of Example 1 is shown, which indicates the deviation of light of different wavelengths from the focal point behind the lens. Figure 2B The astigmatism curve of the optical imaging lens of Example 1 is shown, which represents the meridional image curvature and the sagittal image curvature. Figure 2C The distortion curve of the optical imaging lens of Example 1 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 2D The magnification chromatic aberration curve of the optical imaging lens of Example 1 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 2A to FIG. 2D It can be seen that the optical imaging lens provided in Example 1 can achieve good imaging quality.

[0110] Example 2

[0111] The following reference Figures 3 to 4D The optical imaging lens according to Embodiment 2 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Figure 3 A schematic structural diagram of an optical imaging lens according to Embodiment 2 of the present application is shown.

[0112] like Figure 3 As shown, the optical imaging lens includes, from the object side to the image side, a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8 and an imaging surface S17.

[0113] The first lens E1 has negative power, and its object side surface S1 is concave, and its image side surface S2 is convex. The second lens E2 has positive power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has negative power, and its object side surface S5 is convex, and its image side surface S6 is concave. The fourth lens E4 has positive power, and its object side surface S7 is convex, and its image side surface S8 is convex. The fifth lens E5 has negative power, and its object side surface S9 is concave, and its image side surface S10 is convex. The sixth lens E6 has positive power, and its object side surface S11 is convex, and its image side surface S12 is concave. The seventh lens E7 has negative power, and its object side surface S13 is convex, and its image side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. The light from the object passes through each surface S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0114] In this example, the total effective focal length f of the optical imaging lens is 3.53 mm, the total length TTL of the optical imaging lens is 6.33 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S17 of the optical imaging lens is 4.74 mm, half of the maximum field of view Semi-FOV of the optical imaging lens is 52.17°, and the aperture value Fno of the optical imaging lens is 1.97.

[0115] Table 3 shows the basic parameters of the optical imaging lens of Example 2, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Tables 4-1 and 4-2 show the high-order coefficients of each aspherical mirror surface that can be used in Example 2, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0116]

[0117] Table 3

[0118]

[0119]

[0120] Table 4-1

[0121] Face number A18 A20 A22 A24 A26 A28 A30 S1 -2.4637E-05 2.9142E-07 2.4044E-06 -9.7392E-06 0.0000E+00 0.0000E+00 0.0000E+00 S2 -1.8841E-04 4.5481E-05 8.0250E-06 1.5723E-05 0.0000E+00 0.0000E+00 0.0000E+00 S3 -1.0376E-04 -1.5362E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 2.0419E-06 -8.6330E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 1.9171E-05 -3.6661E-06 -5.7361E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 3.3252E-05 -3.9024E-05 -1.7452E-05 1.4738E-06 0.0000E+00 0.0000E+00 0.0000E+00 S7 5.6973E-07 -6.6166E-05 -1.5241E-05 8.0557E-06 1.5828E-06 0.0000E+00 0.0000E+00 S8 1.0693E-04 1.3014E-04 3.6507E-05 3.6298E-06 -1.5426E-05 0.0000E+00 0.0000E+00 S9 3.3278E-05 4.4366E-05 -8.6818E-05 -2.9551E-06 -1.8259E-07 6.4768E-06 0.0000E+00 S10 3.7987E-04 -1.7023E-04 -9.0325E-05 5.1295E-05 -2.4538E-06 0.0000E+00 0.0000E+00 S11 -3.0460E-03 -8.7287E-04 2.5085E-03 -1.4711E-03 7.8947E-05 2.5840E-05 4.5243E-05 S12 1.7691E-03 -1.1447E-02 1.1076E-02 -3.4770E-03 1.9017E-03 -1.9254E-03 4.8577E-04 S13 -5.5523E-03 1.1227E-03 8.8973E-03 -1.1546E-02 7.1015E-03 -1.9044E-03 9.5035E-05 S14 1.4470E-02 -6.2984E-03 2.1238E-03 -4.9307E-03 1.8990E-03 -1.4794E-03 1.4008E-03

[0122] Table 4-2

[0123] Figure 4A The axial chromatic aberration curve of the optical imaging lens of Example 2 is shown, which indicates that light of different wavelengths deviates from the focal point behind the lens. Figure 4B The astigmatism curve of the optical imaging lens of Example 2 is shown, which represents the meridional image curvature and the sagittal image curvature. Figure 4CThe distortion curve of the optical imaging lens of Example 2 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 4D The magnification chromatic aberration curve of the optical imaging lens of Example 2 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 4A to FIG. 4D It can be seen that the optical imaging lens provided in Example 2 can achieve good imaging quality.

[0124] Example 3

[0125] The following reference Figures 5 to 6D An optical imaging lens according to Embodiment 3 of the present application is described. Figure 5 A schematic structural diagram of an optical imaging lens according to Embodiment 3 of the present application is shown.

[0126] like Figure 5 As shown, the optical imaging lens includes, from the object side to the image side, a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8 and an imaging surface S17.

[0127] The first lens E1 has negative power, and its object side surface S1 is concave, and its image side surface S2 is convex. The second lens E2 has positive power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has negative power, and its object side surface S5 is concave, and its image side surface S6 is concave. The fourth lens E4 has positive power, and its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has negative power, and its object side surface S9 is concave, and its image side surface S10 is convex. The sixth lens E6 has positive power, and its object side surface S11 is convex, and its image side surface S12 is concave. The seventh lens E7 has negative power, and its object side surface S13 is convex, and its image side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. The light from the object passes through each surface S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0128] In this example, the total effective focal length f of the optical imaging lens is 3.53 mm, the total length TTL of the optical imaging lens is 6.33 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S17 of the optical imaging lens is 4.74 mm, half of the maximum field of view Semi-FOV of the optical imaging lens is 52.17°, and the aperture value Fno of the optical imaging lens is 1.97.

[0129] Table 5 shows the basic parameters of the optical imaging lens of Example 3, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Tables 6-1 and 6-2 show the high-order coefficients of each aspherical mirror surface that can be used in Example 3, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0130]

[0131] Table 5

[0132]

[0133]

[0134] Table 6-1

[0135] Face number A18 A20 A22 A24 A26 A28 A30 S1 -2.4038E-05 -3.2248E-07 2.6849E-06 -1.0365E-05 0.0000E+00 0.0000E+00 0.0000E+00 S2 -1.5263E-04 4.7078E-05 9.3324E-06 1.3526E-05 0.0000E+00 0.0000E+00 0.0000E+00 S3 -1.0487E-04 -2.1764E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 5.1802E-06 6.6803E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 2.3726E-05 4.2313E-06 4.3311E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 -2.0678E-05 -3.6557E-05 -1.8401E-05 2.6256E-06 0.0000E+00 0.0000E+00 0.0000E+00 S7 2.0872E-04 2.4636E-04 2.3634E-04 1.3772E-04 3.7060E-05 0.0000E+00 0.0000E+00 S8 2.2968E-04 2.0034E-04 5.0827E-05 -2.4915E-06 -2.0872E-05 0.0000E+00 0.0000E+00 S9 -2.2488E-04 -2.9273E-05 -3.5909E-05 2.1541E-05 1.8824E-05 1.4307E-05 0.0000E+00 S10 -5.4214E-05 -1.2142E-04 2.9960E-05 1.9289E-05 -2.9127E-07 0.0000E+00 0.0000E+00 S11 -1.3734E-03 9.4847E-04 1.7306E-03 -2.0389E-03 3.3864E-04 7.0853E-05 2.0548E-04 S12 -4.0585E-04 -1.0022E-02 1.0468E-02 -2.4764E-03 1.7604E-03 -2.3053E-03 6.4034E-04 S13 -3.5824E-03 -8.0699E-04 1.0490E-02 -1.2539E-02 6.7256E-03 -1.0096E-03 -1.5457E-04 S14 2.1698E-02 -1.0183E-02 5.2227E-03 -6.2204E-03 1.5601E-03 -1.7682E-03 1.5111E-03

[0136] Table 6-2

[0137] Fig. 6A The axial chromatic aberration curve of the optical imaging lens of Example 3 is shown, which indicates that light of different wavelengths deviates from the focal point behind the lens. Figure 6B The astigmatism curve of the optical imaging lens of Example 3 is shown, which represents the meridional image curvature and the sagittal image curvature. Figure 6C The distortion curve of the optical imaging lens of Example 3 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig.6D The magnification chromatic aberration curve of the optical imaging lens of Example 3 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 6A to FIG. 6D It can be seen that the optical imaging lens provided in Example 3 can achieve good imaging quality.

[0138] Example 4

[0139] The following reference Figures 7 to 8D An optical imaging lens according to Embodiment 4 of the present application is described. Figure 7 A schematic structural diagram of an optical imaging lens according to Embodiment 4 of the present application is shown.

[0140] like Figure 7 As shown, the optical imaging lens includes, from the object side to the image side, a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8 and an imaging surface S17.

[0141] The first lens E1 has negative power, and its object side surface S1 is concave, and its image side surface S2 is convex. The second lens E2 has positive power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has negative power, and its object side surface S5 is concave, and its image side surface S6 is convex. The fourth lens E4 has positive power, and its object side surface S7 is convex, and its image side surface S8 is convex. The fifth lens E5 has negative power, and its object side surface S9 is concave, and its image side surface S10 is convex. The sixth lens E6 has positive power, and its object side surface S11 is convex, and its image side surface S12 is concave. The seventh lens E7 has negative power, and its object side surface S13 is convex, and its image side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. The light from the object passes through each surface S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0142] In this example, the total effective focal length f of the optical imaging lens is 3.59 mm, the total length TTL of the optical imaging lens is 6.20 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S17 of the optical imaging lens is 4.74 mm, half of the maximum field of view Semi-FOV of the optical imaging lens is 53.03°, and the aperture value Fno of the optical imaging lens is 1.97.

[0143] Table 7 shows the basic parameters of the optical imaging lens of Example 4, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Tables 8-1 and 8-2 show the high-order coefficients of each aspherical mirror surface that can be used in Example 4, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0144]

[0145] Table 7

[0146]

[0147]

[0148] Table 8-1

[0149] Face number A18 A20 A22 A24 A26 A28 A30 S1 -3.8032E-05 8.7495E-06 6.2519E-06 -5.5673E-06 0.0000E+00 0.0000E+00 0.0000E+00 S2 -1.9807E-04 7.2829E-05 8.6910E-06 2.4966E-05 0.0000E+00 0.0000E+00 0.0000E+00 S3 -1.3222E-04 -2.7623E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 4.8786E-06 -2.6885E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 1.2667E-05 -7.0753E-06 -1.9430E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 1.2595E-05 -1.9037E-05 -1.6611E-05 6.0460E-06 0.0000E+00 0.0000E+00 0.0000E+00 S7 4.2711E-05 -2.7724E-05 -2.0203E-05 5.2913E-06 2.8282E-06 0.0000E+00 0.0000E+00 S8 -4.7991E-06 5.7364E-05 2.0114E-05 8.8571E-06 -2.7329E-06 0.0000E+00 0.0000E+00 S9 -8.4277E-06 -8.3642E-05 -5.1387E-05 2.0156E-05 4.1867E-06 1.0111E-05 1.3779E-06 S10 1.0451E-04 -2.9582E-04 5.6281E-05 5.2278E-05 -1.8775E-05 -9.5749E-07 0.0000E+00 S11 -4.7725E-03 -8.9283E-04 2.2150E-03 -1.0979E-03 1.7100E-04 1.1544E-04 2.6578E-05 S12 1.2904E-02 -1.3749E-02 7.4020E-03 -4.0075E-03 2.8676E-03 -1.4923E-03 3.1070E-04 S13 6.0829E-03 -1.0269E-02 1.4376E-02 -1.1315E-02 5.1639E-03 -1.0165E-03 2.0521E-06 S14 2.6807E-02 -1.2495E-02 5.6516E-03 -5.5967E-03 2.6999E-03 -1.8276E-03 1.1199E-03

[0150] Table 8-2

[0151] Fig. 8A The axial chromatic aberration curve of the optical imaging lens of Example 4 is shown, which indicates the deviation of light of different wavelengths from the focal point behind the lens. Figure 8B The astigmatism curve of the optical imaging lens of Example 4 is shown, which represents the meridional image curvature and the sagittal image curvature. Figure 8CThe distortion curve of the optical imaging lens of Example 4 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig.8D The magnification chromatic aberration curve of the optical imaging lens of Example 4 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 8A to FIG. 8D It can be seen that the optical imaging lens provided in Example 4 can achieve good imaging quality.

[0152] Example 5

[0153] The following reference Figures 9 to 10D An optical imaging lens according to Embodiment 5 of the present application is described. Fig. 9 A schematic structural diagram of an optical imaging lens according to Embodiment 5 of the present application is shown.

[0154] like Fig. 9 As shown, the optical imaging lens includes, from the object side to the image side, a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8 and an imaging surface S17.

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

[0156] In this example, the total effective focal length f of the optical imaging lens is 3.59 mm, the total length TTL of the optical imaging lens is 6.31 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S17 of the optical imaging lens is 4.74 mm, half of the maximum field of view Semi-FOV of the optical imaging lens is 52.12°, and the aperture value Fno of the optical imaging lens is 1.97.

[0157] Table 9 shows the basic parameters of the optical imaging lens of Example 5, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Tables 10-1 and 10-2 show the high-order coefficients of each aspherical mirror surface that can be used in Example 5, wherein the surface shape of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0158]

[0159] Table 9

[0160]

[0161]

[0162] Table 10-1

[0163] Face number A18 A20 A22 A24 A26 A28 A30 S1 -2.9815E-05 8.0013E-07 8.2662E-06 -6.2174E-06 0.0000E+00 0.0000E+00 0.0000E+00 S2 -1.8819E-04 5.1291E-05 5.1488E-06 1.9667E-05 0.0000E+00 0.0000E+00 0.0000E+00 S3 -1.0291E-04 -1.6381E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 3.3274E-06 -1.3535E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 1.7980E-05 -1.7508E-06 2.7374E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 3.0402E-05 -2.8538E-05 -1.5201E-05 2.8831E-06 0.0000E+00 0.0000E+00 0.0000E+00 S7 1.4339E-05 -5.5886E-05 -1.8329E-05 1.0180E-05 1.0335E-06 0.0000E+00 0.0000E+00 S8 1.3814E-04 1.3455E-04 2.7249E-05 1.0755E-06 -1.6042E-05 0.0000E+00 0.0000E+00 S9 -2.2842E-04 9.1905E-05 -8.5187E-05 3.0684E-05 -4.5357E-06 7.4895E-06 0.0000E+00 S10 -2.3336E-04 -7.1557E-05 -1.2744E-04 8.1790E-05 4.3160E-06 0.0000E+00 0.0000E+00 S11 -1.8449E-03 -2.9658E-03 1.7201E-03 4.3976E-04 -4.5407E-04 -1.8464E-04 1.3531E-04 S12 6.6927E-03 -2.0151E-03 2.1530E-03 -6.6835E-04 -3.2750E-04 1.9214E-04 -2.4681E-05 S13 5.4468E-03 -8.6196E-03 4.4049E-03 -1.1836E-03 1.7735E-04 -1.3847E-05 4.2996E-07 S14 1.3103E-03 -2.1003E-03 2.7467E-03 -1.1933E-03 -3.5058E-05 4.8101E-04 -1.8451E-04

[0164] Table 10-2

[0165] Fig. 10A The axial chromatic aberration curve of the optical imaging lens of Example 5 is shown, which indicates the deviation of light of different wavelengths from the focal point behind the lens. Fig. 10B The astigmatism curve of the optical imaging lens of Example 5 is shown, which represents the meridional image curvature and the sagittal image curvature. Fig. 10C The distortion curve of the optical imaging lens of Example 5 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig. 10D The magnification chromatic aberration curve of the optical imaging lens of Example 5 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 10A to FIG. 10D It can be seen that the optical imaging lens provided in Example 5 can achieve good imaging quality.

[0166] Example 6

[0167] The following reference Figures 11 to 12D An optical imaging lens according to Embodiment 6 of the present application is described. Fig.11 A schematic structural diagram of an optical imaging lens according to Example 6 of the present application is shown.

[0168] like Fig.11 As shown, the optical imaging lens includes, from the object side to the image side, a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8 and an imaging surface S17.

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

[0170] In this example, the total effective focal length f of the optical imaging lens is 3.55 mm, the total length TTL of the optical imaging lens is 5.93 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S17 of the optical imaging lens is 4.74 mm, half of the maximum field of view Semi-FOV of the optical imaging lens is 52.43°, and the aperture value Fno of the optical imaging lens is 1.86.

[0171] Table 11 shows the basic parameters of the optical imaging lens of Example 6, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Tables 12-1 and 12-2 show the high-order coefficients of each aspherical mirror surface that can be used in Example 6, wherein the surface shape of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0172]

[0173] Table 11

[0174] Face number A4 A6 A8 A10 A12 A14 A16 S1 6.4108E-01 -6.9492E-02 1.8366E-02 -5.9395E-03 1.5908E-03 -7.3008E-04 1.9590E-04 S2 4.6118E-01 -3.6593E-02 1.8418E-02 -6.1214E-03 1.7889E-03 -1.3503E-03 2.8527E-04 S3 1.0567E-01 -5.1552E-03 7.2978E-03 -2.7735E-03 4.7726E-04 -6.6899E-04 6.3251E-06 S4 -4.2083E-03 8.3168E-04 -3.0962E-04 -5.2854E-05 -4.9679E-05 -5.8347E-06 -8.4847E-06 S5 -9.8350E-02 -8.6912E-03 -2.7462E-03 -3.7757E-04 -6.8686E-05 8.9885E-05 2.1915E-05 S6 -1.4412E-01 8.6924E-03 -1.9830E-03 -1.1364E-03 1.4977E-04 5.0031E-04 9.0826E-05 S7 -1.0715E-01 1.8957E-02 5.3826E-04 -1.8062E-03 1.7713E-05 4.6577E-04 1.1226E-05 S8 -1.1453E-01 -1.1952E-03 6.7349E-03 1.2710E-03 -9.1330E-05 -5.0826E-04 -2.3770E-04 S9 6.0645E-01 -4.2714E-02 1.9822E-02 -1.5699E-02 1.6807E-03 -1.5853E-03 1.6439E-04 S10 7.6006E-01 5.0159E-03 1.0387E-02 -2.2308E-02 5.8823E-03 -5.2876E-04 6.1080E-04 S11 -2.0519E+00 2.2426E-01 1.1591E-01 -3.9650E-02 -3.2683E-02 1.5179E-02 6.3465E-03 S12 -6.3084E-02 -2.1067E-01 2.0659E-01 -6.7459E-02 -4.0183E-03 -1.7537E-03 6.0578E-04 S13 -4.1498E+00 1.2749E+00 -4.4162E-01 1.5464E-01 -6.4808E-02 1.9096E-02 6.0703E-03 S14 -7.9779E+00 1.6141E+00 -4.9381E-01 2.5252E-01 -9.8442E-02 2.1069E-02 -2.0013E-02

[0175] Table 12-1

[0176] Face number A18 A20 A22 A24 A26 A28 A30 S1 -9.3620E-05 3.2302E-05 -6.7471E-06 -9.4763E-07 0.0000E+00 0.0000E+00 0.0000E+00 S2 -2.7780E-04 8.2305E-05 -1.7903E-05 2.5594E-05 0.0000E+00 0.0000E+00 0.0000E+00 S3 -1.3517E-04 1.9224E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 3.6265E-06 -3.7377E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 1.2469E-05 -2.5732E-06 1.5108E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 -6.7390E-06 -1.0867E-05 -9.3902E-06 -1.3012E-06 0.0000E+00 0.0000E+00 0.0000E+00 S7 -4.7193E-05 -1.7714E-05 -6.5133E-06 -1.0548E-06 4.1042E-06 0.0000E+00 0.0000E+00 S8 -5.8019E-05 5.6923E-05 2.0290E-05 1.7748E-05 -5.3559E-06 0.0000E+00 0.0000E+00 S9 -1.9688E-04 1.0698E-04 -1.1910E-04 1.3694E-05 -2.9886E-06 1.2722E-05 0.0000E+00 S10 -2.4159E-05 3.3701E-05 -1.9582E-04 7.6982E-05 3.4291E-06 0.0000E+00 0.0000E+00 S11 -1.5885E-03 -3.8023E-03 1.9023E-03 1.1854E-04 -2.1067E-04 -6.0843E-05 6.4436E-05 S12 6.5224E-03 -5.7574E-03 3.5695E-03 -2.1076E-03 8.2989E-04 -1.8240E-04 1.9309E-05 S13 -5.8589E-03 -4.0910E-03 8.0512E-03 -5.4932E-03 1.9116E-03 -2.9084E-04 8.4683E-06 S14 1.4330E-02 -2.8786E-03 3.6797E-03 -3.2985E-03 1.2426E-03 -9.8413E-04 3.7062E-04

[0177] Table 12-2

[0178] Fig. 12A The axial chromatic aberration curve of the optical imaging lens of Example 6 is shown, which indicates the deviation of light of different wavelengths from the focal point behind the lens. Fig. 12B The astigmatism curve of the optical imaging lens of Example 6 is shown, which represents the meridional image curvature and the sagittal image curvature. Fig. 12C The distortion curve of the optical imaging lens of Example 6 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig.12DThe magnification chromatic aberration curve of the optical imaging lens of Example 6 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 12A to FIG. 12D It can be seen that the optical imaging lens provided in Example 6 can achieve good imaging quality.

[0179] Example 7

[0180] The following reference Figures 13 to 14D An optical imaging lens according to Embodiment 7 of the present application is described. Fig.13 A schematic structural diagram of an optical imaging lens according to Example 7 of the present application is shown.

[0181] like Fig.13 As shown, the optical imaging lens includes, from the object side to the image side, a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8 and an imaging surface S17.

[0182] The first lens E1 has negative power, and its object side surface S1 is concave, and its image side surface S2 is convex. The second lens E2 has positive power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has negative power, and its object side surface S5 is concave, and its image side surface S6 is concave. The fourth lens E4 has positive power, and its object side surface S7 is convex, and its image side surface S8 is convex. The fifth lens E5 has negative power, and its object side surface S9 is concave, and its image side surface S10 is convex. The sixth lens E6 has negative power, and its object side surface S11 is convex, and its image side surface S12 is concave. The seventh lens E7 has negative power, and its object side surface S13 is convex, and its image side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. The light from the object passes through each surface S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0183] In this example, the total effective focal length f of the optical imaging lens is 3.61 mm, the total length TTL of the optical imaging lens is 6.35 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S17 of the optical imaging lens is 4.74 mm, half of the maximum field of view Semi-FOV of the optical imaging lens is 51.86°, and the aperture value Fno of the optical imaging lens is 1.79.

[0184] Table 13 shows the basic parameters of the optical imaging lens of Example 7, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Tables 14-1 and 14-2 show the high-order coefficients of each aspherical mirror surface that can be used in Example 7, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0185]

[0186]

[0187] Table 13

[0188] Face number A4 A6 A8 A10 A12 A14 A16 S1 6.9222E-01 -6.5407E-02 1.5298E-02 -4.9995E-03 1.0787E-03 -5.3347E-04 7.4370E-05 S2 4.8126E-01 -3.6948E-02 1.5729E-02 -6.5564E-03 1.1963E-03 -1.3774E-03 1.8654E-04 S3 9.7196E-02 -6.0623E-03 6.3718E-03 -3.0091E-03 1.0140E-04 -7.3221E-04 -1.2426E-04 S4 -1.3550E-02 1.9631E-03 -3.9017E-04 -1.2621E-04 -8.7385E-05 -3.2512E-05 -1.8171E-05 S5 -8.7028E-02 -4.1889E-03 -2.8098E-03 -5.0329E-04 -2.1316E-04 -1.7612E-05 -2.1850E-05 S6 -1.4935E-01 1.6146E-02 -5.7246E-03 -3.4604E-04 -2.1283E-04 3.5976E-05 -5.8736E-05 S7 -1.6379E-01 2.5740E-02 -3.7225E-03 2.6414E-04 -1.7219E-04 -1.9749E-05 -1.1955E-05 S8 -1.2666E-01 -7.7128E-03 3.6304E-03 1.1787E-03 4.4449E-04 4.7587E-05 -6.4631E-05 S9 4.8661E-01 -2.6241E-02 1.6333E-02 -1.2911E-02 7.3620E-04 -1.8740E-04 -4.8087E-04 S10 1.0068E+00 -5.5287E-02 3.8416E-02 -3.6427E-02 1.2190E-02 -2.1810E-03 7.4774E-04 S11 -1.2147E+00 -1.0282E-02 2.3690E-01 -1.2407E-01 1.0850E-02 4.0648E-03 1.0203E-02 S12 -1.9510E+00 1.5358E-01 1.1659E-01 -3.7223E-02 -4.0172E-02 2.2541E-02 -3.9989E-03 S13 -7.3469E+00 2.1104E+00 -7.7256E-01 2.8987E-01 -1.3894E-01 6.7657E-02 -1.5440E-02 S14 -9.0690E+00 2.0176E+00 -6.5886E-01 2.8580E-01 -1.2574E-01 2.9097E-02 -1.7512E-02

[0189] Table 14-1

[0190] Face number A18 A20 A22 A24 A26 A28 A30 S1 -6.7529E-05 -3.7682E-07 9.1207E-06 -5.7119E-06 0.0000E+00 0.0000E+00 0.0000E+00 S2 -2.5929E-04 6.0561E-05 -2.1051E-06 2.6511E-05 0.0000E+00 0.0000E+00 0.0000E+00 S3 -1.7628E-04 -4.7084E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 3.6540E-06 3.9468E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 6.4777E-07 -4.4629E-07 2.6283E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 2.7209E-05 5.7797E-07 5.9627E-06 -1.5604E-06 0.0000E+00 0.0000E+00 0.0000E+00 S7 9.6761E-05 1.1634E-05 7.2231E-06 -5.1254E-06 -8.1171E-07 0.0000E+00 0.0000E+00 S8 -4.0111E-05 -8.3836E-06 -2.4373E-06 5.4844E-06 2.2680E-06 0.0000E+00 0.0000E+00 S9 1.9782E-04 -1.4002E-04 2.2907E-05 -2.0318E-05 7.9921E-06 3.6001E-06 0.0000E+00 S10 1.3897E-04 -3.3749E-04 1.1057E-04 -2.1779E-05 5.4138E-06 3.1413E-07 0.0000E+00 S11 -9.2651E-03 1.6973E-03 1.2313E-03 -7.0279E-04 -3.1256E-04 4.2178E-04 -1.1182E-04 S12 1.2151E-02 -1.5746E-02 8.2382E-03 -3.3775E-03 3.3994E-03 -2.5567E-03 7.1991E-04 S13 -4.4866E-03 -3.4800E-03 1.4451E-02 -1.2467E-02 5.7584E-03 -6.1320E-04 -6.6492E-04 S14 2.1196E-02 -1.0391E-02 4.3320E-03 -3.8408E-03 1.0901E-03 -1.0683E-03 8.4014E-04

[0191] Table 14-2

[0192] Fig.14A The axial chromatic aberration curve of the optical imaging lens of Example 7 is shown, which indicates the deviation of light of different wavelengths from the focal point behind the lens. Fig. 14B The astigmatism curve of the optical imaging lens of Example 7 is shown, which represents the meridional image curvature and the sagittal image curvature. Fig. 14C The distortion curve of the optical imaging lens of Example 7 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig.14D The magnification chromatic aberration curve of the optical imaging lens of Example 7 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 14A to FIG. 14D It can be seen that the optical imaging lens provided in Example 7 can achieve good imaging quality.

[0193] Example 8

[0194] The following reference Figures 15 to 16D An optical imaging lens according to Example 8 of the present application is described. Fig.15 A schematic structural diagram of an optical imaging lens according to Example 8 of the present application is shown.

[0195] like Fig.15 As shown, the optical imaging lens includes, from the object side to the image side, a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8 and an imaging surface S17.

[0196] The first lens E1 has negative power, and its object side surface S1 is concave, and its image side surface S2 is convex. The second lens E2 has positive power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has negative power, and its object side surface S5 is concave, and its image side surface S6 is concave. The fourth lens E4 has positive power, and its object side surface S7 is convex, and its image side surface S8 is convex. The fifth lens E5 has negative power, and its object side surface S9 is concave, and its image side surface S10 is convex. The sixth lens E6 has positive power, and its object side surface S11 is convex, and its image side surface S12 is concave. The seventh lens E7 has negative power, and its object side surface S13 is convex, and its image side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. The light from the object passes through each surface S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0197] In this example, the total effective focal length f of the optical imaging lens is 3.45 mm, the total length TTL of the optical imaging lens is 6.29 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S17 of the optical imaging lens is 4.74 mm, half of the maximum field of view Semi-FOV of the optical imaging lens is 53.59°, and the aperture value Fno of the optical imaging lens is 2.03.

[0198] Table 15 shows the basic parameters of the optical imaging lens of Example 8, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Tables 16-1 and 16-2 show the high-order coefficients of each aspherical mirror surface that can be used in Example 8, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0199]

[0200]

[0201] Table 15

[0202] Face number A4 A6 A8 A10 A12 A14 A16 S1 6.8886E-01 -6.5152E-02 1.6118E-02 -4.9244E-03 1.0003E-03 -4.7330E-04 6.8182E-05 S2 4.3282E-01 -2.9589E-02 1.3421E-02 -4.4068E-03 5.2645E-04 -8.9186E-04 6.4325E-06 S3 8.6984E-02 -2.2528E-03 4.3306E-03 -1.3318E-03 -3.0098E-05 -3.2371E-04 -8.7466E-05 S4 -4.5315E-03 9.2225E-04 -1.2421E-04 -4.5364E-05 -4.2680E-05 -1.0590E-05 -7.0934E-06 S5 -7.6746E-02 -4.2658E-03 -2.1413E-03 -2.0477E-04 -1.0249E-04 3.3574E-05 -7.5723E-06 S6 -1.4772E-01 1.6805E-02 -5.0860E-03 3.0245E-04 -1.2765E-04 1.2831E-04 -3.0844E-05 S7 -1.6441E-01 2.4125E-02 -3.3294E-03 7.2268E-04 -2.2445E-04 1.5764E-05 -3.6238E-05 S8 -1.4403E-01 -8.2990E-03 4.9657E-03 9.9589E-04 2.5731E-04 -2.2642E-04 -1.8330E-04 S9 6.1341E-01 -4.8887E-02 2.3300E-02 -1.7247E-02 3.2621E-03 -1.7826E-03 8.2142E-05 S10 7.1302E-01 2.1440E-02 6.4998E-03 -2.2434E-02 8.2321E-03 -1.6469E-03 3.7271E-04 S11 -2.9600E+00 4.6495E-01 5.4671E-02 -3.8830E-02 -2.7450E-02 1.9162E-02 -7.3528E-04 S12 -2.2222E+00 2.3424E-01 8.4208E-02 -2.6098E-02 -3.1071E-02 1.0152E-02 3.5821E-04 S13 -7.0989E+00 2.0818E+00 -7.6917E-01 3.0269E-01 -1.5260E-01 7.3643E-02 -1.5167E-02 S14 -9.1785E+00 2.0885E+00 -6.9960E-01 3.3021E-01 -1.7023E-01 4.6971E-02 -1.4972E-02

[0203] Table 16-1

[0204] Face number A18 A20 A22 A24 A26 A28 A30 S1 -3.5957E-05 3.5537E-06 -1.5577E-06 -6.0506E-06 0.0000E+00 0.0000E+00 0.0000E+00 S2 -1.2110E-04 3.7680E-05 7.9582E-06 1.2698E-05 0.0000E+00 0.0000E+00 0.0000E+00 S3 -6.5177E-05 -1.3471E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 2.4422E-06 -3.4805E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 9.1840E-06 -4.8149E-06 2.6169E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 3.5987E-05 -1.1575E-05 -4.9636E-06 3.9926E-06 0.0000E+00 0.0000E+00 0.0000E+00 S7 6.3465E-05 -1.0944E-05 -8.5703E-06 3.1020E-06 -2.0532E-07 0.0000E+00 0.0000E+00 S8 -6.2918E-05 3.1067E-05 1.9820E-05 1.2985E-05 -2.5208E-06 0.0000E+00 0.0000E+00 S9 -1.2891E-04 1.1207E-04 -8.8497E-05 3.7991E-06 -1.2734E-06 9.9571E-06 1.3811E-06 S10 1.3444E-04 4.2314E-05 -1.5246E-04 4.1583E-05 4.2122E-06 3.1519E-07 0.0000E+00 S11 4.5929E-04 -2.6629E-03 2.0987E-03 -8.7316E-04 8.9316E-05 -1.3158E-04 9.2563E-05 S12 9.9040E-03 -1.4616E-02 8.3300E-03 -8.2878E-04 7.9470E-04 -1.8318E-03 6.1300E-04 S13 -7.0980E-03 -2.3220E-04 1.0472E-02 -1.1740E-02 6.1918E-03 -1.1668E-03 -3.3535E-05 S14 1.5561E-02 -4.5362E-03 1.6168E-03 -7.4839E-03 3.6706E-03 -1.3627E-03 1.1098E-03

[0205] Table 16-2

[0206] Fig.16A The axial chromatic aberration curve of the optical imaging lens of Example 8 is shown, which indicates the deviation of light of different wavelengths from the focal point behind the lens. Fig. 16B The astigmatism curve of the optical imaging lens of Example 8 is shown, which represents the meridional image curvature and the sagittal image curvature. Fig. 16CThe distortion curve of the optical imaging lens of Example 8 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig.16D The magnification chromatic aberration curve of the optical imaging lens of Example 8 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 16A to FIG. 16D It can be seen that the optical imaging lens provided in Example 8 can achieve good imaging quality.

[0207] In summary, Examples 1 to 8 respectively satisfy the relationships shown in Table 17.

[0208] Conditional / Example 1 2 3 4 5 6 7 8 TTL / ImgH 1.34 1.34 1.34 1.31 1.33 1.25 1.34 1.33 |f4×tan(Semi-FOV)|(mm) 4.70 4.47 5.04 4.87 4.62 5.23 4.20 4.36 <![CDATA[TTL×f / tan(Semi-FOV)(mm 2 )]]> 17.29 17.35 17.35 16.75 17.62 16.19 18.00 16.00 |f2 / R3+f2 / R4| 3.47 3.59 3.56 3.63 3.67 3.45 3.72 3.66 (R9+R10) / R10 1.66 1.69 1.65 1.68 1.67 1.72 1.80 1.62 (CT2+CT3) / T23 1.80 1.89 1.87 1.90 1.93 2.15 1.91 2.06 CT6 / ∑CT 0.22 0.23 0.23 0.20 0.27 0.21 0.17 0.20 ∑CT / ∑AT 1.90 2.38 2.17 2.40 2.73 2.42 2.30 2.47 f123 / f 4.00 4.40 2.65 2.69 3.14 2.72 4.71 4.67 |(SAG51+SAG52) / CT5| 5.05 4.88 5.40 3.44 4.45 4.55 4.29 4.18 |(R9+R10) / ET5| 3.29 3.17 3.17 3.27 3.33 4.10 3.41 3.31 f12 / R3+f12 / R4 4.72 3.94 4.03 4.20 4.01 4.63 4.37 4.56 |R14 / SAG71+R14 / SAG72| 7.71 6.67 7.64 5.23 6.29 4.11 6.22 7.14

[0209] Table 17

[0210] The present application also provides an imaging device, whose electronic photosensitive element can be a photosensitive coupled device (CCD) or a complementary metal oxide semiconductor element (CMOS). The imaging device can be an independent imaging device such as a digital camera, or an imaging module integrated in a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens described above.

[0211] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with the technical features with similar functions disclosed in this application (but not limited to) by each other.

Claims

1. An optical imaging lens, characterized in that: The optical axis includes, in order from the object side to the image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens having optical power; The first lens has negative optical power, its object side surface is concave, and its image side surface is convex; The second lens has positive refractive power, its object side surface is convex, and its image side surface is concave; The third lens has negative optical power; The fourth lens has positive refractive power, and its image side surface is convex; The fifth lens has negative optical power, its object side surface is concave, and its image side surface is convex; The object side surface of the sixth lens is a convex surface; The seventh lens has negative optical power, and its image side surface is concave; The number of lenses having optical power in the optical imaging lens is seven; The distance TTL from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis and half the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens ImgH satisfy: 1.25≤TTL / ImgH≤1.34; and A curvature radius R3 of the object-side surface of the second lens, a curvature radius R4 of the image-side surface of the second lens, and a combined focal length f12 of the first lens and the second lens satisfy: 3.94≤f12 / R3+f12 / R4≤4.

72.

2. The optical imaging lens according to claim 1, wherein: An effective focal length f2 of the second lens, a curvature radius R3 of an object-side surface of the second lens, and a curvature radius R4 of an image-side surface of the second lens satisfy: 3.45≤|f2 / R3+f2 / R4|≤3.

72.

3. The optical imaging lens according to claim 1, wherein: A curvature radius R9 of the object-side surface of the fifth lens and a curvature radius R10 of the image-side surface of the fifth lens satisfy: 1.62≤(R9+R10) / R10≤1.

80.

4. The optical imaging lens according to claim 1, wherein: A center thickness CT2 of the second lens on the optical axis, a center thickness CT3 of the third lens on the optical axis, and a spacing T23 between the second lens and the third lens on the optical axis satisfy: 1.80≤(CT2+CT3) / T23≤2.

15.

5. The optical imaging lens according to claim 1, wherein: The total effective focal length f of the optical imaging lens and the combined focal length f123 of the first lens, the second lens and the third lens satisfy: 2.65≤f123 / f≤4.

71.

6. The optical imaging lens according to claim 1, wherein: The center thickness CT5 of the fifth lens on the optical axis, the 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 on the optical axis, and the distance SAG52 from the intersection of the image side surface of the fifth lens and the optical axis to the effective radius vertex of the image side surface of the fifth lens on the optical axis satisfy: 3.44≤|(SAG51+SAG52) / CT5|≤5.

40.

7. The optical imaging lens according to claim 1, wherein: A curvature radius R9 of the object-side surface of the fifth lens, a curvature radius R10 of the image-side surface of the fifth lens, and an edge thickness ET5 of the fifth lens satisfy: 3.17≤|(R9+R10) / ET5|≤4.

10.

8. The optical imaging lens according to claim 1, wherein: The curvature radius R14 of the image side surface of the seventh lens, the distance SAG71 from the intersection of the object side surface of the seventh lens and the optical axis to the vertex of the effective radius of the object side surface of the seventh lens on the optical axis, and the distance SAG72 from the intersection of the image side surface of the seventh lens and the optical axis to the vertex of the effective radius of the image side surface of the seventh lens on the optical axis satisfy: 4.11≤|R14 / SAG71+R14 / SAG72|≤7.

71.

9. The optical imaging lens according to any one of claims 1 to 8, characterized in that: The effective focal length f4 of the fourth lens and half of the maximum field of view Semi-FOV of the optical imaging lens satisfy the following: 4.20mm≤|f4×tan(Semi-FOV)|≤5.23mm.

10. The optical imaging lens according to any one of claims 1 to 8, characterized in that: The distance TTL from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis, the total effective focal length f of the optical imaging lens, and half of the maximum field of view Semi-FOV of the optical imaging lens meet the following conditions: 16 mm 2 ≤TTL×f / tan(Semi-FOV)≤18mm 2 .

11. The optical imaging lens according to any one of claims 1 to 8, characterized in that: A center thickness CT6 of the sixth lens on the optical axis and a sum ΣCT of center thicknesses of the first to seventh lenses on the optical axis satisfy: 0.17≤CT6 / ΣCT≤0.

27.

12. The optical imaging lens according to any one of claims 1 to 8, characterized in that: A sum ∑CT of the center thicknesses of the first lens to the seventh lens on the optical axis and a sum ∑AT of the spacing distances between any two adjacent lenses of the first lens to the seventh lens on the optical axis satisfy: 1.90≤∑CT / ∑AT≤2.73.

Images