Optical imaging lens

Abstract

The present application provides an optical imaging lens, which sequentially includes, from the object side to the image side along the optical axis: a first lens with a positive optical power; a second lens with a negative optical power; a third lens with a positive optical power; a fourth lens with a negative optical power; a fifth lens with a negative optical power; a sixth lens with an optical power, whose object side surface is concave and image side surface is convex; a seventh lens with an optical power. Among them, the distance TTL along the optical axis from the object side surface of the first lens to the imaging surface and the total effective focal length f of the optical imaging lens satisfy TTL / f < 1, and the distance TTL along the optical axis from the object side surface of the first lens to the imaging surface, the total effective focal length f of the optical imaging lens, and the maximum semi-field angle Semi-FOV of the optical imaging lens satisfy 2.5 < TTL / f / tan(Semi-FOV). The number of lenses with optical power in the optical imaging lens is seven.

Description

[0001] Divisional application statement

[0002] This application is a divisional application of Chinese invention patent application filed on April 1, 2021, entitled "Optical Imaging Lens" and with application number 202110354558.X. Technical Field

[0003] This application relates to the field of optical components, and more specifically, to an optical imaging lens. Background Technology

[0004] In recent years, various portable electronic products, such as smartphones, have experienced rapid development, placing higher demands on the optical imaging lenses used in these products. Telephoto lenses are highly practical in actual shooting. In addition to their ability to change perspective and create bokeh, telephoto lenses can also create perspective illusions, thus gaining increasing popularity among consumers and gradually becoming a standard feature of mobile phone lenses.

[0005] However, conventional telephoto lenses often cannot meet the ever-evolving design requirements of electronic products, necessitating structural improvements and optimizations. One of the most pressing problems in this field is how to achieve high image quality, long-distance photography capabilities, and a large aperture while ensuring structural manufacturability. Summary of the Invention

[0006] This application provides an optical imaging lens, which may include, sequentially from the object side to the image side along the optical axis: a first lens with optical power; a second lens with negative optical power; a third lens with optical power; a fourth lens with negative optical power; a fifth lens with negative optical power; a sixth lens with optical power, the object side of which is concave and the image side of which is convex; and a seventh lens with optical power; wherein, the distance TTL from the object side of the first lens to the imaging plane along the optical axis satisfies TTL / f < 1 with the total effective focal length f of the optical imaging lens, and half the diagonal length ImgH of the effective pixel area on the imaging plane satisfies 8mm with the maximum semi-field of view (Semi-FOV) of the optical imaging lens. <ImgH / tan(Semi-FOV)。

[0007] In some embodiments, the distance TTL from the object-side surface of the first lens to the imaging surface along the optical axis, the total effective focal length f of the optical imaging lens, and the maximum semi-FOV of the optical imaging lens can satisfy: 2.5 <TTL / f / tan(Semi-FOV)。

[0008] In some embodiments, the maximum semi-field-of-view (Semi-FOV) of the optical imaging lens and the aperture value (Fno) of the optical imaging lens can satisfy: 0.5 <tan(Semi-FOV)*Fno<1。

[0009] In some embodiments, the entrance pupil diameter EPD of the optical imaging lens and half the diagonal length ImgH of the effective pixel area on the imaging surface can satisfy: 1 <EPD / ImgH<1.5。

[0010] In some embodiments, the effective focal length f1 of the first lens, the effective focal length f2 of the second lens, the effective focal length f3 of the third lens, and the combined focal length f123 of the first lens, the second lens, and the third lens can satisfy: (f1+f2+f3) / f123<1.

[0011] In some embodiments, the combined focal length f123 of the first lens, the second lens, and the third lens can satisfy the condition that f123 / f < 0.5 with the total effective focal length f of the optical imaging lens.

[0012] In some embodiments, the effective focal length f4 of the fourth lens and the effective focal length f5 of the fifth lens can satisfy: 2<(f4+f5) / f<0.

[0013] In some embodiments, the distance TD from the object-side surface of the first lens to the image-side surface of the seventh lens along the optical axis, the center thickness CT7 of the seventh lens, and the spacing T67 between the sixth and seventh lenses along the optical axis can satisfy: 2.5 <TD / (CT7+T67)<3。

[0014] In some embodiments, the spacing T12 between the first lens and the second lens along the optical axis, the spacing T23 between the second lens and the third lens along the optical axis, the spacing T34 between the third lens and the fourth lens along the optical axis, and the spacing T45 between the fourth lens and the fifth lens along the optical axis can satisfy: (T12+T23+T34) / T45<1.

[0015] In some embodiments, the spacing T45 between the fourth and fifth lenses along the optical axis, the spacing T56 between the fifth and sixth lenses along the optical axis, and the spacing T67 between the sixth and seventh lenses along the optical axis may satisfy: 1 <T67 / (T45+T56)<2。

[0016] In some embodiments, the minimum value N among the refractive indices of the first lens to the seventh lens is... min It can satisfy: 1.5 <N min。

[0017] In some embodiments, the Abbe number V5 of the fifth lens and the Abbe number V6 of the sixth lens may satisfy: 2 < V5 / V6 < 3.

[0018] In some embodiments, the effective focal length f4 of the fourth lens and the radius of curvature R7 of the object side surface of the fourth lens may satisfy: 1 < f4 / R7 < 2.

[0019] In some embodiments, the total effective focal length f of the optical imaging lens, the radius of curvature R9 of the object side surface of the fifth lens, and the radius of curvature R10 of the image side surface of the fifth lens may satisfy: 2 < f / R10 - f / R9 < 3.

[0020] The present application also provides an optical imaging lens, which sequentially includes, along the optical axis from the object side to the image side: a first lens having a focal power; a second lens having a negative focal power; a third lens having a focal power; a fourth lens having a negative focal power; a fifth lens having a negative focal power; a sixth lens having a focal power, whose object side surface is concave and image side surface is convex; a seventh lens having a focal power; wherein, TTL / f < 1, 2.5 < TTL / f / tan(Semi - FOV), where TTL is the distance along the optical axis from the object side surface of the first lens to the imaging surface, f is the total effective focal length of the optical imaging lens, and Semi - FOV is the maximum semi - field angle of the optical imaging lens.

[0021] The present application adopts a seven - lens structure. By reasonably distributing the focal power, surface shape, central thickness of each lens, and the on - axis distance between each lens, etc., the above - mentioned optical imaging lens can achieve at least one beneficial effect such as a large aperture and a small depth of field while meeting the imaging requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Combined with the drawings, through the following detailed description of non - restrictive embodiments, other features, purposes, and advantages of the present application will become more obvious. In the drawings:

[0023] Figure 1 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 1 of the present application;

[0024] Figures 2A to 2D Respectively show the axial chromatic aberration curve, lateral chromatic aberration curve, astigmatism curve, and distortion curve of the optical imaging lens of Embodiment 1;

[0025] Figure 3 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 2 of the present application;

[0026] Figures 4A to 4DThe on-axis chromatic aberration curve, magnification chromatic aberration curve, astigmatism curve, and distortion curve of the optical imaging lens of Example 2 are shown respectively.

[0027] Figure 5 A schematic diagram of the structure of an optical imaging lens according to Embodiment 3 of this application is shown;

[0028] Figures 6A to 6D The on-axis chromatic aberration curve, magnification chromatic aberration curve, astigmatism curve, and distortion curve of the optical imaging lens of Example 3 are shown respectively.

[0029] Figure 7 A schematic diagram of the structure of an optical imaging lens according to Embodiment 4 of this application is shown;

[0030] Figures 8A to 8D The on-axis chromatic aberration curve, magnification chromatic aberration curve, astigmatism curve, and distortion curve of the optical imaging lens of Example 4 are shown respectively.

[0031] Figure 9 A schematic diagram of the structure of an optical imaging lens according to Embodiment 5 of this application is shown;

[0032] Figures 10A to 10D The on-axis chromatic aberration curve, magnification chromatic aberration curve, astigmatism curve, and distortion curve of the optical imaging lens of Example 5 are shown respectively.

[0033] Figure 11 A schematic diagram of the structure of an optical imaging lens according to Embodiment 6 of this application is shown; and

[0034] Figures 12A to 12D The on-axis chromatic aberration curve, magnification chromatic aberration curve, astigmatism curve, and distortion curve of the optical imaging lens of Example 6 are shown respectively. Detailed Implementation

[0035] To better understand this application, various aspects of this application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of exemplary embodiments of this application and are not intended to limit the scope of this application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

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

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

[0038] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the location of the convexity 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 location of the concaveness 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 subject is called the object-side surface of the lens, and the surface of each lens closest to the imaging plane is called the image-side surface of the lens.

[0039] It should also be understood that the terms "comprising," "including," "having," "containing," 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. Furthermore, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire list of features, not individual elements in the list. Additionally, when describing embodiments of this application, the word "may" is used to mean "one or more embodiments of this application." And the term "exemplary" is intended to refer to an example or illustration.

[0040] Unless otherwise specified, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should also be understood that terms (e.g., those defined in common dictionaries) shall be interpreted as having a meaning consistent with their meaning in the context of the relevant art and shall not be interpreted in an idealized or overly formalized sense, unless expressly so specified herein.

[0041] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

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

[0043] An optical imaging lens according to an exemplary embodiment of this application may include, for example, seven lenses with optical power, namely, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. These seven lenses are arranged sequentially along the optical axis from the object side to the image side. An air gap may exist between any two adjacent lenses, from the first lens to the seventh lens.

[0044] In an exemplary embodiment, the above optical imaging lens may further include at least one aperture. The aperture can be disposed at an appropriate position as needed. For example, it can be disposed between the object side and the first lens.

[0045] In an exemplary embodiment, the first lens may have a positive or negative optical power; the second lens may have a negative optical power; the third lens may have a positive or negative optical power; the fourth lens may have a negative optical power; the fifth lens may have a negative optical power; the sixth lens may have a positive or negative optical power; the seventh lens may have a positive or negative optical power. By reasonably allocating the positive and negative optical powers of each lens of the optical imaging lens, the effect of long-distance imaging can be effectively improved. In addition, the second lens, the fourth lens, and the fifth lens having negative optical powers can effectively balance the spherical aberration and chromatic aberration generated by the lens group, thereby improving the imaging quality and enabling a clear image to be presented on the photosensitive element.

[0046] In an exemplary embodiment, the object side surface of the sixth lens may be concave, and the image side surface may be convex. By reasonably configuring the shape of the sixth lens, it can be ensured to a certain extent that the sixth lens is not easily deformed during the assembly process, a relatively large adjustment space can be ensured, and stray light introduced due to the appearance defects of the sixth lens can be avoided.

[0047] In an exemplary embodiment, the optical imaging lens may satisfy TTL / f < 1, where f is the total effective focal length of the optical imaging lens, and TTL is the distance along the optical axis from the object side surface of the first lens to the imaging surface. The optical imaging lens satisfying TTL / f < 1 can enable the optical imaging lens to achieve a small depth of field, special viewing angles, and defocusing and perspective capabilities. More specifically, TTL and f may satisfy: 0 < TTL / f < 1.

[0048] In an exemplary embodiment, the optical imaging lens may satisfy 8mm < ImgH / tan(Semi-FOV), where ImgH is half of the diagonal length of the effective pixel region on the imaging surface, and Semi-FOV is the maximum semi-field angle of the optical imaging lens. The optical imaging lens satisfying 8mm < ImgH / tan(Semi-FOV) is beneficial to ensuring the large image surface and long focal length characteristics of the optical imaging lens. More specifically, 8mm < ImgH / tan(Semi-FOV) < 10mm.

[0049] In an exemplary embodiment, the optical imaging lens may satisfy 2.5 < TTL / f / tan(Semi-FOV), where f is the total effective focal length of the optical imaging lens, TTL is the distance along the optical axis from the object side surface of the first lens to the imaging surface, and Semi-FOV is the maximum half field angle of the optical imaging lens. The optical imaging lens satisfying 2.5 < TTL / f / tan(Semi-FOV) is conducive to the miniaturization and portability of the optical lens, and is also conducive to balancing the aberration of the optical lens, so that a clear and complete image can be presented on the photosensitive element, achieving a better shooting effect. More specifically, TTL, f, and tan(Semi-FOV) may satisfy: 2.5 < TTL / f / tan(Semi-FOV) < 3.

[0050] In an exemplary embodiment, the optical imaging lens may satisfy 0.5 < tan(Semi-FOV)*Fno < 1, where Semi-FOV is the maximum half field angle of the optical imaging lens, and Fno is the aperture value of the optical imaging lens. The optical imaging lens satisfying 0.5 < tan(Semi-FOV)*Fno < 1 is conducive to the optical lens having the characteristics of a large aperture and a long focal length, as well as improving the shooting effect in low-light scenes.

[0051] In an exemplary embodiment, the optical imaging lens may satisfy 1 < EPD / ImgH < 1.5, where EPD is the entrance pupil diameter of the optical imaging lens, and ImgH is half of the diagonal length of the effective pixel region on the imaging surface. The optical imaging lens satisfying 1 < EPD / ImgH < 1.5 is conducive to the imaging lens having a large image surface and improving the imaging quality.

[0052] In an exemplary embodiment, the optical imaging lens may satisfy (f1 + f2 + f3) / f123 < 1, where f1 is the effective focal length of the first lens, f2 is the effective focal length of the second lens, f3 is the effective focal length of the third lens, and f123 is the combined focal length of the first lens, the second lens, and the third lens. The optical imaging lens satisfying (f1 + f2 + f3) / f123 < 1 is conducive to the optical imaging lens improving the imaging quality and obtaining better resolution. More specifically, f1, f2, f3, and f123 may satisfy: 0 < (f1 + f2 + f3) / f123 < 1.

[0053] In an exemplary embodiment, the optical imaging lens may satisfy f123 / f < 0.5, 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. The optical imaging lens satisfying f123 / f < 0.5 is conducive to the optical imaging lens reducing the risk of total internal reflection of light and surface ghost images, and there is a larger selection range for the optical power of the remaining lenses. More specifically, f123 and f may satisfy 0 < f123 / f < 0.5.

[0054] In an exemplary embodiment, the optical imaging lens may satisfy -2 < (f4 + f5) / f < 0, where f is the total effective focal length of the optical imaging lens, f4 is the effective focal length of the fourth lens, and f5 is the effective focal length of the fifth lens. The optical imaging lens satisfying -2 < (f4 + f5) / f < 0 is conducive to balancing the aberration of the optical lens, thereby improving the imaging quality of the optical lens; and it can reasonably control the light trend, avoid the problem of excessive sensitivity, and is also conducive to the miniaturization of the optical system.

[0055] In an exemplary embodiment, the optical imaging lens may satisfy 2.5 < TD / (CT7 + T67) < 3, where TD is the distance along the optical axis from the object side surface of the first lens to the image side surface of the seventh lens, CT7 is the central thickness of the seventh lens, and T67 is the distance along the optical axis between the sixth lens and the seventh lens. The optical imaging lens satisfying 2.5 < TD / (CT7 + T67) < 3 is conducive to reducing the ghost image risk and sensitivity of the lens, and reducing the coma and astigmatism of the system, thereby stabilizing the field curvature and the peak value of the modulation transfer function MTF.

[0056] In an exemplary embodiment, the optical imaging lens may satisfy (T12 + T23 + T34) / T45 < 1, where T12 is the distance along the optical axis between the first lens and the second lens, T23 is the distance along the optical axis between the second lens and the third lens, T34 is the distance along the optical axis between the third lens and the fourth lens, and T45 is the distance along the optical axis between the fourth lens and the fifth lens. The optical imaging lens satisfying (T12 + T23 + T34) / T45 < 1 can effectively avoid interference, adjust the field curvature of the optical imaging lens, and weaken the ghost image energy between the first lens and the fifth lens. More specifically, T12, T23, T34, and T45 may satisfy 0 < (T12 + T23 + T34) / T45 < 1.

[0057] In an exemplary embodiment, the optical imaging lens may satisfy 1 < T67 / (T45 + T56) < 2, where T45 is the distance along the optical axis between the fourth lens and the fifth lens, T56 is the distance along the optical axis between the fifth lens and the sixth lens, and T67 is the distance along the optical axis between the sixth lens and the seventh lens. The optical imaging lens satisfying 1 < T67 / (T45 + T56) < 2 is conducive to canceling positive and negative spherical aberration, positive and negative astigmatism, positive and negative distortion, and chromatic aberration, and has good temperature drift performance.

[0058] In an exemplary embodiment, the optical imaging lens may satisfy 1.5 < N min , where N min is the minimum value of the refractive indices of the first lens to the seventh lens. The optical imaging lens satisfies 1.5 < N min, which is beneficial to the miniaturization and portability of the optical imaging lens, and further beneficial to resisting torsion, high-altitude drop and drum test. More specifically, 1.5 < N min <1.7.

[0059] In an exemplary embodiment, the optical imaging lens can satisfy 2 < V5 / V6 < 3, where V5 is the Abbe number of the fifth lens and V6 is the Abbe number of the sixth lens. The optical imaging lens satisfying 2 < V5 / V6 < 3 is beneficial to improving the imaging quality and preventing rainbow patterns from appearing.

[0060] In an exemplary embodiment, the optical imaging lens can satisfy 1 < f4 / R7 < 2, where f4 is the effective focal length of the fourth lens and R7 is the curvature radius of the object side surface of the fourth lens. The optical imaging lens satisfying 1 < f4 / R7 < 2 is beneficial to balancing the distortion and field curvature of the optical imaging lens, and ensures that the optical imaging lens has a long focal length characteristic and a high aberration correction ability.

[0061] In an exemplary embodiment, the optical imaging lens can satisfy 2 < f / R10 - f / R9 < 3, where f is the total effective focal length of the optical imaging lens, R9 is the curvature radius of the object side surface of the fifth lens, and R10 is the curvature radius of the image side surface of the fifth lens. The optical imaging lens satisfying 2 < f / R10 - f / R9 < 3 can make the optical imaging lens have better imaging quality.

[0062] In an exemplary embodiment, the above 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.

[0063] The optical imaging lens according to the above embodiment of the present application can adopt multiple lenses, such as the seven lenses described above. By reasonably distributing the optical power, surface type, central thickness of each lens, and the on-axis spacing between each lens, etc., the volume of the optical imaging lens can be effectively reduced, the sensitivity of the optical imaging lens can be reduced, and the processability of the optical imaging lens can be improved, making the optical imaging lens more conducive to production and processing and applicable to portable electronic products. The optical imaging lens according to the embodiment of the present application also has the characteristic of achieving the effect of long-distance shooting while meeting the imaging requirements.

[0064] In the embodiments of this application, at least one of the mirror surfaces of each lens is an aspherical mirror surface, that is, at least one of the object-side surface of the first lens to the image-side surface of the seventh lens is an aspherical mirror surface. The characteristic of an aspherical lens is that its curvature changes continuously from the center to the periphery of the lens. Unlike a spherical lens, which has a constant curvature from the center to the periphery, an aspherical lens has better radius of curvature characteristics, and has the advantages of improving distortion aberrations and astigmatism aberrations. By using an aspherical lens, aberrations occurring during imaging can be eliminated as much as possible, thereby improving image quality. Optionally, at least one of the object-side and image-side surfaces of each of the first, second, third, fourth, fifth, sixth, and seventh lenses is an aspherical mirror surface. Optionally, both the object-side and image-side surfaces of each of the first, second, third, fourth, fifth, sixth, and seventh lenses are aspherical mirror surfaces.

[0065] 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.

[0066] Specific embodiments of the optical imaging lens applicable to the above-described embodiments are further described below with reference to the accompanying drawings.

[0067] Example 1

[0068] The following is for reference Figures 1 to 2D Describes an optical imaging lens according to Embodiment 1 of this application. Figure 1 A schematic diagram of the structure of an optical imaging lens according to Embodiment 1 of this application is shown.

[0069] like Figure 1 As shown, the optical imaging lens includes, in sequence from the object side to the image side along the optical axis: aperture STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, and filter E8.

[0070] 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 convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being concave and its image-side surface S12 being convex. The seventh lens E7 has negative optical power, with its object-side surface S13 being concave and its image-side surface S14 being convex. The filter E8 has an object-side surface S15 and an image-side surface S16. The optical imaging lens has an imaging surface S17. Light from the object passes through each surface S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0071] Table 1 shows the basic parameters of the optical imaging lens of Example 1, where the units for radius of curvature, thickness / distance, and focal length are all millimeters (mm).

[0072]

[0073] Table 1

[0074] In Example 1, the total effective focal length f of the optical imaging lens is 8.14 mm, the combined focal length f123 of the first, second, and third lenses is 3.64 mm, the maximum semi-FOV of the optical imaging lens is 19.325°, and the minimum refractive index N of each lens in the optical imaging lens is... min It is 1.55.

[0075] In Embodiment 1, the object-side surface and image-side surface of any one of the first lens E1 to the seventh lens E7 are aspherical surfaces, and the surface shape x of each aspherical lens can be defined using, but is not limited to, the following aspherical formula:

[0076]

[0077] 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; 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 to S14 in Example 1. 10 A 12 A 14 A 16 A 18 and A 20 .

[0078] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -3.8957E-03 1.6504E-04 2.6913E-03 -2.3153E-03 2.8710E-04 3.7991E-04 -2.0573E-04 4.6031E-05 -4.9855E-06 S2 8.4072E-02 -2.4615E-03 -1.7370E-02 -1.0009E-02 2.0245E-02 -1.1572E-02 3.4789E-03 -5.9688E-04 5.5431E-05 S3 7.4380E-02 4.1052E-02 -7.7212E-02 5.2872E-02 -2.9302E-02 1.5614E-02 -6.3515E-03 1.6119E-03 -2.2200E-04 S4 -2.4809E-01 2.1855E-01 -2.2137E-01 3.3031E-01 -4.0168E-01 3.1135E-01 -1.5268E-01 4.7555E-02 -9.1422E-03 S5 -2.1615E-01 1.2396E-01 -2.6614E-01 6.6180E-01 -8.4702E-01 6.2271E-01 -2.8117E-01 7.9092E-02 -1.3459E-02 S6 -1.2648E-01 7.9075E-01 -3.6423E+00 9.9656E+00 -1.6433E+01 1.7073E+01 -1.1456E+01 4.9607E+00 -1.3399E+00 S7 -5.0683E-03 1.0576E+00 -4.3287E+00 1.0753E+01 -1.7268E+01 1.8067E+01 -1.2375E+01 5.4977E+00 -1.5250E+00 S8 1.6967E-01 3.9448E-01 -1.2410E+00 1.8045E+00 -1.5648E+00 5.0567E-01 5.6220E-01 -7.6348E-01 3.5794E-01 S9 2.8348E-02 2.6794E-01 -1.7259E+00 5.6234E+00 -1.2529E+01 1.9186E+01 -1.9985E+01 1.3915E+01 -6.2079E+00 S10 -2.8143E-02 -8.6701E-03 4.7338E-02 -1.0223E+00 3.7327E+00 -7.2147E+00 8.5843E+00 -6.4676E+00 3.0047E+00 S11 -2.0227E-02 6.0497E-02 -3.4343E-01 1.0369E+00 -2.0087E+00 2.4410E+00 -1.8620E+00 8.6534E-01 -2.2332E-01 S12 -7.0755E-03 6.2526E-02 -2.0306E-01 4.4535E-01 -6.4706E-01 6.3099E-01 -4.1458E-01 1.8204E-01 -5.1370E-02 S13 -2.7819E-02 2.1518E-02 -1.9122E-02 1.2566E-02 -5.7036E-03 1.7858E-03 -3.7981E-04 5.3560E-05 -4.7886E-06 S14 -4.3160E-02 1.9792E-02 -1.3100E-02 6.8182E-03 -2.6809E-03 8.0032E-04 -1.7925E-04 2.9250E-05 -3.3196E-06

[0079] Table 2

[0080] Figure 2A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 1 is shown, which represents the deviation of light of different wavelengths from the convergence focal point after passing through the lens. Figure 2B The magnification chromatic aberration curve of the optical imaging lens of Embodiment 1 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. Figure 2C 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. Figure 2D The distortion curve of the optical imaging lens of Embodiment 1 is shown, representing the distortion magnitude corresponding to different field of view angles. According to... Figures 2A to 2D It can be seen that the optical imaging lens given in Example 1 can achieve good imaging quality.

[0081] Example 2

[0082] The following is for reference Figures 3 to 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. Figure 3 A schematic diagram of the structure of an optical imaging lens according to Embodiment 2 of this application is shown.

[0083] like Figure 3 As shown, the optical imaging lens includes, in sequence from the object side to the image side along the optical axis: aperture STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, and filter E8.

[0084] 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 convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being concave and its image-side surface S12 being convex. The seventh lens E7 has negative optical power, with its object-side surface S13 being concave and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. The optical imaging lens has an imaging surface S17. Light from the object passes through each surface S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0085] In Example 2, the total effective focal length f of the optical imaging lens is 8.04 mm, the combined focal length f123 of the first, second, and third lenses is 3.67 mm, the maximum semi-FOV of the optical imaging lens is 19.325°, and the minimum refractive index N of each lens in the optical imaging lens is... min It is 1.55.

[0086] Table 3 shows the basic parameters of the optical imaging lens of Example 2, wherein the units of radius of curvature, thickness / distance and focal length are millimeters (mm). Table 4 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.

[0087]

[0088] Table 3

[0089]

[0090]

[0091] Table 4

[0092] Figure 4A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 2 is shown, which represents the deviation of light of different wavelengths from the convergence focal point after passing through the lens. Figure 4B The magnification chromatic aberration curve of the optical imaging lens of Embodiment 2 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. Figure 4C 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. Figure 4D The distortion curve of the optical imaging lens of Example 2 is shown, representing the distortion magnitude corresponding to different field of view angles. According to... Figure 4A Figure 4D It can be seen that the optical imaging lens given in Example 2 can achieve good imaging quality.

[0093] Example 3

[0094] The following is for reference Figures 5 to 6D An optical imaging lens according to Embodiment 3 of this application is described. Figure 5 A schematic diagram of the structure of an optical imaging lens according to Embodiment 3 of this application is shown.

[0095] like Figure 5 As shown, the optical imaging lens includes, in sequence from the object side to the image side along the optical axis: aperture STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, and filter E8.

[0096] 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 convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being concave and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being concave and its image-side surface S12 being convex. 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. The optical imaging lens has an imaging surface S17. Light from the object passes through each surface S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0097] In Example 3, the total effective focal length f of the optical imaging lens is 8.00 mm, the combined focal length f123 of the first, second, and third lenses is 3.43 mm, the maximum semi-FOV of the optical imaging lens is 19.325°, and the minimum refractive index N of each lens in the optical imaging lens is... min It is 1.55.

[0098] Table 5 shows the basic parameters of the optical imaging lens of Example 3, where the units for radius of curvature, thickness / distance, and focal length are millimeters (mm). Table 6 shows the higher-order coefficients that can be used for each aspherical mirror in Example 3, where each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0099]

[0100] Table 5

[0101]

[0102]

[0103] Table 6

[0104] Figure 6A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 3 is shown, which represents the deviation of light of different wavelengths from the convergence focal point after passing through the lens. Figure 6B The magnification chromatic aberration curve of the optical imaging lens of Embodiment 3 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. Figure 6C 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. Figure 6DThe distortion curve of the optical imaging lens of Example 3 is shown, representing the distortion magnitude corresponding to different field of view angles. According to... Figure 6A Figure 6D It can be seen that the optical imaging lens given in Example 3 can achieve good imaging quality.

[0105] Example 4

[0106] The following is for reference Figures 7 to 8D An optical imaging lens according to Embodiment 4 of this application is described. Figure 7 A schematic diagram of the structure of an optical imaging lens according to Embodiment 4 of this application is shown.

[0107] like Figure 7 As shown, the optical imaging lens includes, in sequence from the object side to the image side along the optical axis: aperture STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, and filter E8.

[0108] 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 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 negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being concave and its image-side surface S12 being convex. 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. The optical imaging lens has an imaging surface S17. Light from the object passes through each surface S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0109] In Example 4, the total effective focal length f of the optical imaging lens is 8.00 mm, the combined focal length f123 of the first, second, and third lenses is 3.56 mm, the maximum semi-FOV of the optical imaging lens is 19.325°, and the minimum refractive index N of each lens in the optical imaging lens is... min It is 1.55.

[0110] Table 7 shows the basic parameters of the optical imaging lens of Example 4, where the units for radius of curvature, thickness / distance, and focal length are millimeters (mm). Table 8 shows the higher-order coefficients that can be used for each aspherical mirror in Example 4, where each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0111]

[0112]

[0113] Table 7

[0114] Face number A4 A6 A8 A10 A12 A14 A16 S1 -1.4834E-03 2.1887E-03 -2.2853E-03 1.0892E-03 -5.3126E-04 2.3599E-04 -6.8185E-05 S2 1.1344E-01 -5.2531E-02 -4.6828E-03 1.9582E-02 -1.1783E-02 3.8335E-03 -7.4291E-04 S3 1.0570E-01 -2.8939E-02 -2.6720E-02 3.3559E-02 -1.7167E-02 4.9788E-03 -8.4054E-04 S4 -2.4122E-01 2.7070E-01 -3.0117E-01 2.5962E-01 -1.5453E-01 6.0259E-02 -1.4605E-02 S5 -2.4525E-01 1.8829E-01 -1.2108E-01 -1.3500E-02 2.2814E-01 -3.7490E-01 3.4569E-01 S6 -9.2552E-02 1.9114E-01 -1.6221E-01 -3.4729E-02 2.4312E-01 -2.7744E-01 1.6712E-01 S7 1.2865E-01 9.1514E-02 -3.5466E-01 4.3230E-01 -2.9916E-01 1.2677E-01 -3.1535E-02 S8 2.1824E-01 -5.0140E-03 -4.5848E-01 1.2121E+00 -1.5788E+00 -7.4783E-01 8.3561E+00 S9 1.5382E-02 -1.7514E-01 1.4137E+00 -8.3246E+00 3.2276E+01 -8.6090E+01 1.6271E+02 S10 -7.0432E-02 -4.9985E-03 4.6736E-02 -2.2985E-01 5.7160E-01 -8.7400E-01 8.6576E-01 S11 -2.9394E-02 3.2100E-02 -7.7619E-02 1.2481E-01 -1.4005E-01 9.1428E-02 -3.1474E-02 S12 -1.2044E-02 3.6302E-02 -7.6101E-02 1.2606E-01 -1.4174E-01 9.9689E-02 -4.2346E-02 S13 -1.7449E-02 6.3051E-03 -1.5460E-03 3.1316E-04 -5.5262E-05 8.3311E-06 -1.0125E-06 S14 -2.5559E-02 5.7315E-03 -1.2372E-03 2.1407E-04 -2.3187E-05 8.8455E-07 6.1200E-08 Face number A18 A20 A22 A24 A26 A28 A30 S1 1.0625E-05 -6.8696E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 8.0940E-05 -3.8484E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 7.6666E-05 -3.0278E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 1.9857E-03 -1.1529E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 -2.0793E-01 8.4400E-02 -2.2685E-02 3.7279E-03 -2.9090E-04 -3.5716E-06 1.5715E-06 S6 -5.7844E-02 1.0807E-02 -8.4271E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 3.9578E-03 -1.6137E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S8 -1.9030E+01 2.4926E+01 -2.1135E+01 1.1811E+01 -4.2165E+00 8.7402E-01 -8.0219E-02 S9 -2.2117E+02 2.1687E+02 -1.5196E+02 7.4184E+01 -2.3959E+01 4.6003E+00 -3.9756E-01 S10 -5.5845E-01 2.2617E-01 -5.2195E-02 5.2290E-03 0.0000E+00 0.0000E+00 0.0000E+00 S11 3.8003E-03 2.4156E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S12 9.8967E-03 -9.6646E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S13 8.2662E-08 -3.1921E-09 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S14 -5.4612E-09 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00

[0115] Table 8

[0116] Figure 8A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 4 is shown, which represents the deviation of light of different wavelengths from the convergence point of the lens. Figure 8B 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 plane after light passes through the lens. Figure 8C 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. Figure 8D The distortion curve of the optical imaging lens of Example 4 is shown, representing the distortion magnitude corresponding to different field of view angles. According to... Figure 8A Figure 8D It can be seen that the optical imaging lens given in Example 4 can achieve good imaging quality.

[0117] Example 5

[0118] The following is for reference Figures 9 to 10D An optical imaging lens according to Embodiment 5 of this application is described. Figure 9 A schematic diagram of the structure of an optical imaging lens according to Embodiment 5 of this application is shown.

[0119] like Figure 9 As shown, the optical imaging lens includes, in sequence from the object side to the image side along the optical axis: aperture STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, and filter E8.

[0120] 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 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 negative 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 concave and its image-side surface S12 being convex. 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. The optical imaging lens has an imaging surface S17. Light from the object passes through each surface S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0121] In Example 5, the total effective focal length f of the optical imaging lens is 8.00 mm, the combined focal length f123 of the first, second, and third lenses is 3.56 mm, the maximum semi-field-of-view (Semi-FOV) of the optical imaging lens is 19.325°, and the minimum refractive index N of each lens in the optical imaging lens is... min It is 1.55.

[0122] Table 9 shows the basic parameters of the optical imaging lens of Example 5, wherein the units of radius of curvature, thickness / distance and focal length are millimeters (mm). Table 10 shows the higher-order coefficients that can be used for each aspherical mirror in Example 5, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0123]

[0124] Table 9

[0125] Face number A4 A6 A8 A10 A12 A14 A16 S1 -1.4188E-03 2.2565E-03 -2.2188E-03 5.9528E-04 1.5194E-05 -4.1537E-05 7.1317E-06 S2 1.1494E-01 -5.3837E-02 -7.7495E-03 2.5015E-02 -1.5550E-02 5.2717E-03 -1.0621E-03 S3 1.0740E-01 -2.9377E-02 -3.2936E-02 4.4274E-02 -2.5717E-02 8.9240E-03 -1.9201E-03 S4 -2.4034E-01 2.6759E-01 -2.9340E-01 2.4767E-01 -1.4386E-01 5.4681E-02 -1.2925E-02 S5 -2.4484E-01 1.8444E-01 -1.1250E-01 -1.8783E-02 2.1571E-01 -3.4487E-01 3.1539E-01 S6 -8.8518E-02 1.7277E-01 -1.1692E-01 -1.0575E-01 3.1721E-01 -3.2914E-01 1.9093E-01 S7 1.3060E-01 8.1340E-02 -3.3422E-01 4.1080E-01 -2.8658E-01 1.2375E-01 -3.2183E-02 S8 2.1201E-01 1.3644E-02 -6.2153E-01 2.2413E+00 -5.8068E+00 1.1019E+01 -1.4448E+01 S9 6.5221E-03 -1.4621E-01 1.2809E+00 -7.6894E+00 3.0051E+01 -8.0560E+01 1.5286E+02 S10 -7.6523E-02 5.6617E-03 5.2690E-02 -2.8642E-01 7.1169E-01 -1.0831E+00 1.0694E+00 S11 -3.3703E-02 3.5449E-02 -5.7988E-02 7.0639E-02 -6.3877E-02 2.5454E-02 3.4079E-03 S12 -1.6078E-02 3.9576E-02 -6.6627E-02 1.0429E-01 -1.1986E-01 8.7006E-02 -3.8184E-02 S13 -1.7452E-02 6.1736E-03 -1.5786E-03 3.6554E-04 -7.3299E-05 1.1080E-05 -1.1413E-06 S14 -2.3467E-02 5.2720E-03 -1.2976E-03 3.1270E-04 -5.6640E-05 6.4042E-06 -3.9577E-07 Face number A18 A20 A22 A24 A26 A28 A30 S1 -2.0214E-08 -7.0238E-08 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 1.1962E-04 -5.8311E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 2.3907E-04 -1.3360E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 1.7167E-03 -9.7647E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 -1.9056E-01 7.8755E-02 -2.1984E-02 3.9138E-03 -3.8473E-04 1.2101E-05 5.8588E-07 S6 -6.4794E-02 1.1976E-02 -9.2949E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 4.4781E-03 -2.4220E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S8 1.2254E+01 -5.6227E+00 -4.3411E-02 1.7523E+00 -1.0645E+00 2.9019E-01 -3.1784E-02 S9 -2.0850E+02 2.0506E+02 -1.4408E+02 7.0510E+01 -2.2822E+01 4.3902E+00 -3.8001E-01 S10 -6.8823E-01 2.7819E-01 -6.4072E-02 6.4037E-03 0.0000E+00 0.0000E+00 0.0000E+00 S11 -6.5437E-03 1.5555E-03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S12 9.2128E-03 -9.2589E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S13 7.1732E-08 -2.1402E-09 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S14 9.7177E-09 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00

[0126] Table 10

[0127] Figure 10A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 5 is shown, which represents the deviation of light of different wavelengths from the convergence focal point after passing through the lens. Figure 10B The magnification chromatic aberration curve of the optical imaging lens of Embodiment 5 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. Figure 10C 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. Figure 10D The distortion curve of the optical imaging lens of Example 5 is shown, representing the distortion magnitude corresponding to different field of view angles. According to... Figure 10A Figure 10DIt can be seen that the optical imaging lens given in Example 5 can achieve good imaging quality.

[0128] Example 6

[0129] The following is for reference Figures 11 to 12D An optical imaging lens according to Embodiment 6 of this application is described. Figure 11 A schematic diagram of the structure of an optical imaging lens according to Embodiment 6 of this application is shown.

[0130] like Figure 11 As shown, the optical imaging lens includes, in sequence from the object side to the image side along the optical axis: aperture STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, and filter E8.

[0131] 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 negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being concave and its image-side surface S12 being convex. 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. The optical imaging lens has an imaging surface S17. Light from the object passes through each surface S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0132] In Example 6, the total effective focal length f of the optical imaging lens is 8.00 mm, the combined focal length f123 of the first, second, and third lenses is 3.76 mm, the maximum semi-FOV of the optical imaging lens is 19.325°, and the minimum refractive index N of each lens in the optical imaging lens is... min It is 1.55.

[0133] Table 11 shows the basic parameters of the optical imaging lens of Example 6, wherein the units of radius of curvature, thickness / distance and focal length are millimeters (mm). Table 12 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.

[0134]

[0135] Table 11

[0136]

[0137]

[0138] Table 12

[0139] Figure 12A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 6 is shown, which represents the deviation of light of different wavelengths from the convergence focal point after passing through the lens. Figure 12B The magnification chromatic aberration curve of the optical imaging lens of Embodiment 6 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. Figure 12C 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. Figure 12D The distortion curve of the optical imaging lens of Example 6 is shown, representing the distortion magnitude corresponding to different field of view angles. According to... Figure 12A Figure 12D It can be seen that the optical imaging lens given in Example 6 can achieve good imaging quality.

[0140] In summary, Examples 1 to 6 respectively satisfy the relationships shown in Table 13.

[0141] Conditional / Example 1 2 3 4 5 6 TTL / f 0.96 0.97 0.97 0.97 0.98 0.97 ImgH / tan(Semi-FOV) (mm) 8.56 8.44 8.39 8.39 8.40 8.39 TTL / f / tan(Semi-FOV) 2.73 2.73 2.73 2.73 2.73 2.73 tan(Semi-FOV)*Fno 0.70 0.71 0.72 0.71 0.71 0.72 EPD / ImgH 1.36 1.34 1.33 1.33 1.33 1.33 (f1+f2+f3) / f123 0.81 0.84 0.70 0.46 0.44 0.83 f123 / f 0.45 0.46 0.43 0.45 0.44 0.47 (f4+f5) / f -1.86 -1.80 -1.51 -1.64 -1.66 -1.81 TD / (CT7+T67) 2.69 2.65 2.98 2.78 2.76 2.83 (T12+T23+T34) / T45 0.59 0.66 0.70 0.57 0.57 0.69 T67 / (T45+T56) 1.76 1.90 1.14 1.15 1.13 1.39 V5 / V6 2.16 2.16 2.16 2.16 2.16 2.16 f4 / R7 1.88 1.74 1.58 1.43 1.41 1.29 f / R10-f / R9 2.44 2.58 2.64 2.49 2.40 2.10

[0142] Table 13

[0143] This application also provides an imaging device, whose 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.

[0144] 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 protection 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 concept of this application. 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, characterized in that, Along the optical axis from the object side to the image side, the following are included in sequence: A first lens with positive optical power has a convex object-side surface. A second lens with negative optical power has a convex object side and a concave image side. A third lens with positive optical power has a convex object-side surface; The fourth lens has negative optical power and its object side is concave. The fifth lens with negative optical power has a convex object side and a concave image side. The sixth lens, which has optical power, has a concave object side and a convex image side. A seventh lens with optical power; At least one of the sixth lens and the seventh lens has positive optical power; Among them, 0 <TTL / f<1, 2.5 <TTL / f / tan(Semi-FOV)≤2.73,0.44≤(f1+f2+f3) / f123≤0.84, Wherein, TTL is the distance from the object side of the first lens to the imaging surface along the optical axis, f is the total effective focal length of the optical imaging lens, Semi-FOV is the maximum half field of view of the optical imaging lens, f1 is the effective focal length of the first lens, f2 is the effective focal length of the second lens, f3 is the effective focal length of the third lens, and f123 is the combined focal length of the first lens, the second lens, and the third lens. The optical imaging lens has seven lenses with optical power.

2. The optical imaging lens according to claim 1, characterized in that, The maximum semi-FOV of the optical imaging lens and the aperture value Fno of the optical imaging lens satisfy the following: 0.70≤tan(Semi-FOV) Fno≤0.72。 3. The optical imaging lens according to claim 1, characterized in that, The entrance pupil diameter EPD of the optical imaging lens satisfies the following condition: The entrance pupil diameter EPD of the optical imaging lens satisfies the following condition: ... 1.33≤EPD / ImgH≤1.

36.

4. The optical imaging lens according to claim 1, characterized in that, The combined focal length f123 of the first lens, the second lens, and the third lens satisfies the following condition: 0.43≤f123 / f<0.

5.

5. The optical imaging lens according to claim 1, characterized in that, The effective focal length f4 of the fourth lens and the effective focal length f5 of the fifth lens satisfy the following: -1.86≤(f4+f5) / f≤-1.

51.

6. The optical imaging lens according to claim 1, characterized in that, The distance TD from the object-side surface of the first lens to the image-side surface of the seventh lens along the optical axis, the center thickness CT7 of the seventh lens, and the spacing T67 between the sixth and seventh lenses along the optical axis satisfy the following: 2.65≤TD / (CT7+T67)<3.

7. The optical imaging lens according to claim 1, characterized in that, The spacing T12 between the first lens and the second lens along the optical axis, the spacing T23 between the second lens and the third lens along the optical axis, the spacing T34 between the third lens and the fourth lens along the optical axis, and the spacing T45 between the fourth lens and the fifth lens along the optical axis satisfy the following: 0.57≤(T12+T23+T34) / T45≤0.

70.

8. The optical imaging lens according to claim 1, characterized in that, The spacing T45 between the fourth and fifth lenses along the optical axis, the spacing T56 between the fifth and sixth lenses along the optical axis, and the spacing T67 between the sixth and seventh lenses along the optical axis satisfy the following: 1.13≤T67 / (T45+T56)≤1.

90.

9. The optical imaging lens according to claim 1, characterized in that, The minimum refractive index Nmin among the first lens to the seventh lens satisfies: 1.5 <Nmin≤1.54。 10. The optical imaging lens according to claim 1, characterized in that, The Abbe number V5 of the fifth lens and the Abbe number V6 of the sixth lens satisfy the following: 2.16≤V5 / V6<3.

11. The optical imaging lens according to claim 1, characterized in that, The effective focal length f4 of the fourth lens and the radius of curvature R7 of the object side surface of the fourth lens satisfy the following: 1.29≤f4 / R7≤1.

88.

12. The optical imaging lens according to claim 1, characterized in that, The total effective focal length f of the optical imaging lens, the radius of curvature R9 of the object-side surface of the fifth lens, and the radius of curvature R10 of the image-side surface of the fifth lens satisfy the following: 2.10≤f / R10-f / R9≤2.64.

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