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. The first lens has positive optical power, and its object-side surface is convex; the second lens has negative optical power, and its image-side surface is concave; the third lens, the fourth lens, the fifth lens, and the sixth lens all have positive or negative optical power; the fourth lens has positive or negative optical power, and its object-side surface is concave; the seventh lens has negative optical power, and its object-side surface is concave. The effective focal length f7 of the seventh lens and the effective focal length f2 of the second lens satisfy 0.5<f7 / f2<2.0.

Description

[0001] Divisional application statement

[0002] This application is a divisional application of the Chinese invention patent application with the invention name “Optical Imaging Lens” and application number 201810011264.5 filed on January 5, 2018. Technical Field

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

[0004] Due to their portability, portable electronic devices such as smartphones are becoming increasingly popular. People want to use these devices to capture distant scenes outdoors, highlighting the subject while blurring the background. This requires lenses that not only have telephoto characteristics but also possess compact size and high image quality. However, existing telephoto lenses typically achieve high image quality by increasing the number of lens elements, resulting in large size and failing to simultaneously meet the requirements of telephoto, compactness, and high image quality. Summary of the Invention

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

[0006] In one aspect, the present application provides an optical imaging lens comprising, in order from the object side to the image side along the optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The first lens may have positive optical power, and its object-side surface may be convex; the second lens may have negative optical power, and its image-side surface may be concave; the third lens, the fourth lens, the fifth lens, and the sixth lens may all have positive or negative optical power; the seventh lens may have negative optical power, and its object-side surface may be concave. The total effective focal length f of the optical imaging lens and the effective focal length f1 of the first lens may satisfy f / f1 ≥ 2.0.

[0007] In one embodiment, the total effective focal length f of the optical imaging lens and the effective focal length f1 of the first lens may satisfy 2.0≤f / f1≤7.0.

[0008] In one embodiment, the maximum half field of view HFOV of the optical imaging lens may satisfy HFOV≤35°.

[0009] 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 between any two adjacent lenses among the first to seventh lenses on the optical axis may satisfy ΣCT / ΣAT<2.5.

[0010] In one embodiment, the effective focal length f3 of the third lens, the effective focal length f4 of the fourth lens, and the distance TTL from the center of the object-side surface of the first lens to the imaging plane of the optical imaging lens on the optical axis may satisfy -5.5<(f3+f4) / TTL<5.0.

[0011] In one embodiment, the total effective focal length f of the optical imaging lens and the curvature radius R4 of the image-side surface of the second lens element may satisfy 1.0<f / R4<3.5.

[0012] In one embodiment, the effective focal length f7 of the seventh lens and the effective focal length f2 of the second lens may satisfy 0.5<f7 / f2<2.0.

[0013] In one embodiment, the effective focal length f3 of the third lens, the effective focal length f4 of the fourth lens, and the effective focal length f5 of the fifth lens may satisfy 0≤f3 / |f4+f5|≤3.0.

[0014] In one embodiment, the effective focal length f7 of the seventh lens, the curvature radius R11 of the object-side surface of the sixth lens, and the curvature radius R12 of the image-side surface of the sixth lens may satisfy −1.5<f7 / |R11+R12|.

[0015] In one embodiment, a curvature radius R3 of the object-side surface of the second lens and a curvature radius R4 of the image-side surface of the second lens may satisfy |R3+R4| / |R3-R4|<3.5.

[0016] In one embodiment, a curvature radius R7 of the object-side surface of the fourth lens element and a curvature radius R12 of the image-side surface of the sixth lens element may satisfy 0<R7 / R12<3.0.

[0017] In one embodiment, the Abbe coefficient V5 of the fifth lens element, the Abbe coefficient V6 of the sixth lens element, and the Abbe coefficient V7 of the seventh lens element may satisfy 1.0<(V5+V6) / V7<7.0.

[0018] On the other hand, the present application also provides an optical imaging lens, which includes, in order from the object side to the image side along the optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The first lens may have positive optical power, and its object-side surface may be convex; the second lens may have negative optical power, and its image-side surface may be concave; the third lens, the fifth lens, and the sixth lens may all have positive optical power or negative optical power; the fourth lens may have positive optical power or negative optical power, and its object-side surface may be concave; the seventh lens may have negative optical power, and its object-side surface may be concave. The effective focal length f7 of the seventh lens and the effective focal length f2 of the second lens may satisfy 0.5<f7 / f2<2.0.

[0019] On the other hand, the present application also provides an optical imaging lens, which includes, in order from the object side to the image side along the optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The first lens may have positive optical power, and its object-side surface may be convex; the second lens may have negative optical power, and its image-side surface may be concave; the third lens, the fourth lens, the fifth lens, and the sixth lens may all have positive optical power or negative optical power; the object-side surface of the sixth lens may be concave, and the image-side surface may be convex; the seventh lens may have negative optical power, and its object-side surface may be concave; the maximum half field of view (HFOV) of the optical imaging lens may satisfy HFOV≤30°.

[0020] In the exemplary embodiments of this application, by rationally configuring the optical power and surface characteristics of the seven lenses and employing a ratio of 0.5 < f7 / f2 < 2.0, the optical imaging lens is advantageously designed to achieve both telephoto characteristics and miniaturization and high imaging quality. For example, the telephoto lens provided herein facilitates miniaturization by employing seven lenses; and by employing a ratio of 0.5 < f7 / f2 < 2.0, it facilitates improvements in chromatic aberration and astigmatism, thereby improving the lens' imaging quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, purposes and advantages of the present application will become more apparent through the following detailed description of non-limiting embodiments in conjunction with the accompanying drawings. In the accompanying drawings:

[0022] Figure 1 1 shows a schematic structural diagram of an optical imaging lens according to Example 1 of the present application;

[0023] Figures 2A to 2D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 1 are respectively shown;

[0024] Figure 3 1 shows a schematic structural diagram of an optical imaging lens according to Example 2 of the present application;

[0025] Figures 4A to 4D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 2 are respectively shown;

[0026] Figure 5 1 shows a schematic structural diagram of an optical imaging lens according to Example 3 of the present application;

[0027] 6A to 6D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 3 are respectively shown;

[0028] Figure 7 1 shows a schematic structural diagram of an optical imaging lens according to Example 4 of the present application;

[0029] Figures 8A to 8D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 4 are respectively shown;

[0030] Figure 9 1 shows a schematic structural diagram of an optical imaging lens according to Example 5 of the present application;

[0031] 10A to 10D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 5 are respectively shown;

[0032] Figure 11 1 shows a schematic structural diagram of an optical imaging lens according to Example 6 of the present application;

[0033] 12A to 12D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 6 are respectively shown;

[0034] Figure 13 1 shows a schematic structural diagram of an optical imaging lens according to Example 7 of the present application;

[0035] 14A to 14D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 7 are respectively shown;

[0036] Figure 15 1 shows a schematic structural diagram of an optical imaging lens according to Example 8 of the present application;

[0037] 16A to 16D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 8 are shown respectively;

[0038] Figure 17 1 shows a schematic structural diagram of an optical imaging lens according to Example 9 of the present application;

[0039] 18A to 18D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 9 are shown respectively;

[0040] Figure 19 1 shows a schematic structural diagram of an optical imaging lens according to Example 10 of the present application;

[0041] 20A to 20D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 10 are respectively shown. DETAILED DESCRIPTION

[0042] For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely 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.

[0043] It should be noted that in this specification, the terms "first," "second," "third," etc., are used solely to distinguish one feature from another and do not limit the features. Thus, the first lens discussed below could also be referred to as the second lens or the third lens without departing from the teachings of this application.

[0044] In the drawings, the thickness, size, and shape of the lenses are slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical and aspherical surfaces shown in the drawings are provided by way of example. That is, the shapes of the spherical and aspherical surfaces are not limited to those shown in the drawings. The drawings are for illustration only and are not drawn strictly to scale.

[0045] In this article, the paraxial region refers to the area near the optical axis. If a lens surface is convex and the location of the convex surface is undefined, it means that the lens surface is convex at least in the paraxial region. If a lens surface is concave and the location of the concave surface is undefined, 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 surface, and the surface of each lens closest to the imaging plane is called the image-side surface.

[0046] 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 preclude 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 list of 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.

[0047] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by those skilled in the art to which this application belongs. It should also be understood that terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology and will not be interpreted in an idealized or overly formal sense unless expressly defined as such herein.

[0048] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this 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.

[0049] The features, principles and other aspects of the present application are described in detail below.

[0050] An optical imaging lens according to an exemplary embodiment of the present application may include, for example, seven lenses having 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 in order from the object side to the image side along the optical axis.

[0051] In an exemplary embodiment, the first lens may have positive optical power and its object-side surface may be convex; the second lens may have negative optical power and its image-side surface may be concave; the third lens may have positive optical power or negative optical power; the fourth lens may have positive optical power or negative optical power; the fifth lens may have positive optical power or negative optical power; the sixth lens may have positive optical power or negative optical power; and the seventh lens may have negative optical power and its object-side surface may be concave.

[0052] In example embodiments, the third lens may have positive refractive power.

[0053] In example embodiments, the fourth lens may have negative power, and its object-side surface may be concave.

[0054] In example embodiments, the object-side surface of the sixth lens may be concave, and the image-side surface may be convex.

[0055] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula HFOV ≤ 35°, where HFOV represents the maximum half-field angle of the optical imaging lens. More specifically, HFOV may further satisfy HFOV ≤ 30°, for example, 23.5° ≤ HFOV ≤ 25.7°. Properly controlling HFOV can improve the optical performance of the lens.

[0056] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the condition f / f1 ≥ 2.0, where f is the total effective focal length of the optical imaging lens and f1 is the effective focal length of the first lens element. More specifically, f and f1 may further satisfy 2.0 ≤ f / f1 ≤ 7.0, for example, 2.0 ≤ f / f1 ≤ 3.0, or another example, 2.06 ≤ f / f1 ≤ 2.52. Properly controlling the focal power of the first lens element helps reduce lens sensitivity and ensures excellent imaging performance. It also helps enhance the lens's telephoto characteristics while maintaining its compactness.

[0057] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional equation: -5.5 < (f3 + f4) / TTL < 5.0, where f3 is the effective focal length of the third lens element, f4 is the effective focal length of the fourth lens element, and TTL is the distance on the optical axis from the center of the object-side surface of the first lens element to the imaging plane of the optical imaging lens. More specifically, f3, f4, and TTL may further satisfy -5.09 ≤ (f3 + f4) / TTL ≤ 4.48. Satisfying the conditional equation: -5.5 < (f3 + f4) / TTL < 5.0 helps mitigate light deflection, improve higher-order aberrations, and ensure lens miniaturization.

[0058] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional equation 1.0 < f / R4 < 3.5, where f is the total effective focal length of the optical imaging lens and R4 is the radius of curvature of the image-side surface of the second lens element. More specifically, f and R4 may further satisfy 1.13 ≤ f / R4 ≤ 3.08. By varying the radius of curvature of the image-side surface of the second lens element and coordinating it with the first lens element, high-order spherical aberrations are balanced while reducing sensitivity in the central field of view.

[0059] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the condition 0.5 < f7 / f2 < 2.0, where f7 is the effective focal length of the seventh lens element and f2 is the effective focal length of the second lens element. More specifically, f7 and f2 may further satisfy 0.65 ≤ f7 / f2 ≤ 1.74. By properly allocating the effective focal lengths of the second and seventh lenses, chromatic aberration and astigmatism in the lens can be improved.

[0060] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the condition 0 < R7 / R12 < 3.0, where R7 is the radius of curvature of the object-side surface of the fourth lens element, and R12 is the radius of curvature of the image-side surface of the sixth lens element. More specifically, R7 and R12 may further satisfy 0.35 ≤ R7 / R12 ≤ 2.62. By optimizing the curvature radii of different lens surfaces, coma aberration in the lens' off-axis field of view is improved.

[0061] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional equation: -1.5 < f7 / |R11+R12|, where f7 is the effective focal length of the seventh lens element, R11 is the radius of curvature of the object-side surface of the sixth lens element, and R12 is the radius of curvature of the image-side surface of the sixth lens element. More specifically, f7, R11, and R12 may further satisfy -1.5 < f7 / |R11+R12| < 0, for example, -1.25 ≤ f7 / |R11+R12| ≤ -0.35. Satisfying the conditional equation: -1.5 < f7 / |R11+R12| improves lens astigmatism, reduces distortion, and corrects chromatic aberration in off-axis field of view areas.

[0062] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the condition ∑CT / ∑AT < 2.5, where ∑CT is the sum of the center thicknesses of the first, second, third, fourth, fifth, sixth, and seventh lenses on the optical axis, and ∑AT is the sum of the distances between any two adjacent lenses on the optical axis. More specifically, ∑CT and ∑AT can further satisfy 0.5 < ∑CT / ∑AT < 2.5, for example, 0.74 ≤ ∑CT / ∑AT ≤ 2.11. Properly allocating the center thicknesses of each lens and the air spacing between them facilitates lens miniaturization and excellent processing characteristics.

[0063] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional equation 0 ≤ f3 / |f4+f5| ≤ 3.0, where f3 is the effective focal length of the third lens element, f4 is the effective focal length of the fourth lens element, and f5 is the effective focal length of the fifth lens element. More specifically, f3, f4, and f5 may further satisfy 0.00 ≤ f3 / |f4+f5| ≤ 2.90. Meeting the conditional equation 0 ≤ f3 / |f4+f5| ≤ 3.0 helps mitigate light deflection angles, improve higher-order aberrations, and reduce the overall lens length, ensuring compactness.

[0064] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional equation 1.0 < (V5 + V6) / V7 < 7.0, where V5 is the Abbe number of the fifth lens element, V6 is the Abbe number of the sixth lens element, and V7 is the Abbe number of the seventh lens element. More specifically, V5, V6, and V7 may further satisfy 1.0 < (V5 + V6) / V7 < 2.0, for example, (V5 + V6) / V7 = 1.43. Proper selection of lenses made of different materials can help correct chromatic aberration in off-axis areas of view.

[0065] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional equation |R3+R4| / |R3-R4|<3.5, where R3 is the radius of curvature of the object-side surface of the second lens element, and R4 is the radius of curvature of the image-side surface of the second lens element. More specifically, R3 and R4 can further satisfy 0.19≤|R3+R4| / |R3-R4|≤3.16. Properly allocating the radius of curvature of the object-side and image-side surfaces of the second lens element helps balance high-order spherical aberration and reduce lens sensitivity.

[0066] In an exemplary embodiment, the optical imaging lens may further include at least one aperture stop to improve the imaging quality of the lens. For example, the aperture stop may be disposed between the object side and the first lens.

[0067] Optionally, the optical imaging lens may further include a filter for correcting color deviation and / or a protective glass for protecting a photosensitive element located on the imaging surface.

[0068] The optical imaging lens according to the above-described embodiment of the present application can utilize multiple lens elements, such as the seven lens elements described above. By rationally allocating the focal power, surface shape, center thickness of each lens element, and the on-axis spacing between lenses, the lens size can be effectively reduced, the sensitivity of the lens can be lowered, and the processability of the lens can be improved, making the optical imaging lens more convenient for production and processing and suitable for portable electronic products.

[0069] The optical imaging lens configuration described above also offers a narrow depth of field and high magnification, enabling the capture of a larger image at the same distance, making it suitable for photographing objects at greater distances. Furthermore, when paired with a wide-angle lens, high-quality imaging with autofocus is possible.

[0070] In the embodiments of the present application, at least one of the mirror surfaces of each lens is an aspheric surface. Aspheric lenses are characterized by a continuously varying curvature from the center to the periphery. Unlike spherical lenses, which have a constant curvature from the center to the periphery, aspheric lenses have a more optimized curvature radius characteristic, with the advantages of reducing distortion and astigmatism. The use of aspheric lenses can minimize aberrations that occur during imaging, thereby improving image quality.

[0071] However, those skilled in the art will appreciate that the number of lenses comprising the optical imaging lens can be varied to achieve the various results and advantages described herein without departing from the claimed technical solutions. For example, while the embodiments describe seven lenses as an example, the optical imaging lens is not limited to including seven lenses. If desired, the optical imaging lens may also include other numbers of lenses.

[0072] Specific embodiments of the optical imaging lens applicable to the above-mentioned embodiments will be further described below with reference to the accompanying drawings.

[0073] Example 1

[0074] The following reference Figures 1 to 2D The optical imaging lens according to Example 1 of the present application is described. Figure 1 A schematic structural diagram of an optical imaging lens according to Example 1 of the present application is shown.

[0075] like Figure 1 As shown, the optical imaging lens according to an exemplary embodiment of the present application includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8 and an imaging surface S17.

[0076] 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 concave and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being concave and its image-side surface S8 being concave. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has 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. Light from an object sequentially passes through surfaces S1 to S16 and is ultimately imaged on an imaging surface S17.

[0077] Table 1 shows the surface type, curvature radius, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 1, where the units of curvature radius and thickness are both millimeters (mm).

[0078]

[0079]

[0080] Table 1

[0081] As can be seen from Table 1, the object-side surface and image-side surface of any lens from the first lens E1 to the seventh lens E7 are all aspherical. In this embodiment, the surface shape x of each aspherical lens can be defined by, but is not limited to, the following aspherical surface formula:

[0082]

[0083] Wherein, x is the distance vector height of the aspheric surface from the vertex of the aspheric surface 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 (given in Table 1); Ai is the correction coefficient of the i-th order of the aspheric surface. Table 2 below lists the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A50, A51, A52, A53, A54, A55, A56, A57, A58, A59, A60, A61, A71, A72, A73, A74, A75, A8 10 、A 12 、A 14 、A 16 and A 18 .

[0084] Face number A4 A6 A8 A10 A12 A14 A16 A18 S1 9.6370E-03 -2.1900E-03 5.2540E-03 -2.3952E-03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 -1.2500E-02 1.9682E-02 -1.6310E-02 5.9373E-03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 1.9108E-02 6.8320E-03 1.3534E-02 -6.7484E-02 1.3910E-01 -1.3265E-01 6.2855E-02 -1.1681E-02 S4 3.5701E-02 -2.4300E-02 3.1741E-02 -1.9076E-01 5.1607E-01 -6.5821E-01 4.0993E-01 -1.0298E-01 S5 -4.8590E-02 9.5652E-02 -5.4152E-01 6.3611E-01 -3.3743E-01 6.5424E-02 0.0000E+00 0.0000E+00 S6 -8.5410E-02 5.6207E-01 -6.4177E-01 -3.9893E-01 9.2531E-01 -3.9151E-01 0.0000E+00 0.0000E+00 S7 -1.0720E-02 7.2777E-01 -5.9408E-01 -5.8071E-01 1.0834E+00 -4.6878E-01 0.0000E+00 0.0000E+00 S8 2.8329E-02 2.1236E-01 -4.7080E-01 6.5482E-01 -3.8546E-01 6.4582E-02 0.0000E+00 0.0000E+00 S9 -6.1000E-02 -1.2370E-02 -5.0390E-02 -5.0609E-02 6.0990E-02 -1.1700E-02 0.0000E+00 0.0000E+00 S10 -1.3470E-02 -6.9200E-03 2.2769E-02 -1.2962E-01 1.7755E-01 -1.1798E-01 4.0754E-02 -6.0466E-03 S11 2.1400E-05 -2.9990E-02 5.1822E-02 -3.1066E-02 9.8170E-03 -1.7900E-03 1.7877E-04 -7.5087E-06 S12 9.7633E-02 -1.7641E-01 1.2849E-01 -4.8242E-02 1.0252E-02 -1.2200E-03 7.1922E-05 -1.3128E-06 S13 5.0985E-02 -1.2040E-01 9.0341E-02 -3.7257E-02 9.2130E-03 -1.3500E-03 1.0702E-04 -3.5644E-06 S14 -7.1080E-02 6.8259E-02 -4.0280E-02 1.3878E-02 -2.9600E-03 3.8800E-04 -2.8532E-05 8.9474E-07

[0085] Table 2

[0086] Table 3 shows the effective focal lengths f1 to f7 of each lens in Example 1, the total effective focal length f of the optical imaging lens, the total optical length TTL (i.e., the distance on the optical axis from the center of the object-side surface S1 of the first lens E1 to the imaging surface S17), and the maximum half field of view HFOV.

[0087] f1(mm) 2.86 f6(mm) 26.31 f2(mm) -5.67 f7(mm) -6.73 f3(mm) 16.99 f(mm) 7.19 f4(mm) -7.06 TTL(mm) 6.33 f5(mm) -28.53 HFOV(°) 23.5

[0088] Table 3

[0089] The optical imaging lens in Example 1 satisfies the following requirements:

[0090] f / f1=2.51, where f is the total effective focal length of the optical imaging lens, and f1 is the effective focal length of the first lens element E1;

[0091] (f3+f4) / TTL=1.57, where f3 is the effective focal length of the third lens element E3, f4 is the effective focal length of the fourth lens element E4, and TTL is the distance on the optical axis from the center of the object-side surface S1 of the first lens element E1 to the imaging surface S17;

[0092] f / R4=1.13, where f is the total effective focal length of the optical imaging lens, and R4 is the radius of curvature of the image-side surface S4 of the second lens element E2;

[0093] f7 / f2=1.19, where f7 is the effective focal length of the seventh lens element E7, and f2 is the effective focal length of the second lens element E2;

[0094] R7 / R12=1.45, where R7 is the radius of curvature of the object-side surface S7 of the fourth lens element E4, and R12 is the radius of curvature of the image-side surface S12 of the sixth lens element E6;

[0095] f7 / |R11+R12|=-0.82, where f7 is the effective focal length of the seventh lens element E7, R11 is the radius of curvature of the object-side surface S11 of the sixth lens element E6, and R12 is the radius of curvature of the image-side surface S12 of the sixth lens element E6;

[0096] ∑CT / ∑AT=1.58, where ∑CT is the sum of the center thicknesses of the first lens E1 to the seventh lens E7 on the optical axis, and ∑AT is the sum of the distances between any two adjacent lenses among the first lens E1 to the seventh lens E7 on the optical axis;

[0097] f3 / |f4+f5|=0.48, where f3 is the effective focal length of the third lens element E3, f4 is the effective focal length of the fourth lens element E4, and f5 is the effective focal length of the fifth lens element E5;

[0098] (V5+V6) / V7=1.43, where V5 is the Abbe number of the fifth lens element E5, V6 is the Abbe number of the sixth lens element E6, and V7 is the Abbe number of the seventh lens element E7;

[0099] |R3+R4| / |R3-R4|=0.19, where R3 is the curvature radius of the object-side surface S3 of the second lens element E2, and R4 is the curvature radius of the image-side surface S4 of the second lens element E2.

[0100] 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 field curvature and the sagittal field curvature. Figure 2C The distortion curve of the optical imaging lens of Example 1 is shown, which represents the distortion magnitude values ​​under different viewing angles. Figure 2DThe 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. Figures 2A to 2D It can be seen that the optical imaging lens provided in Example 1 can achieve good imaging quality.

[0101] Example 2

[0102] The following reference Figures 3 to 4D The optical imaging lens according to Example 2 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Example 1 will be omitted. Figure 3 A schematic structural diagram of an optical imaging lens according to Example 2 of the present application is shown.

[0103] like Figure 3 As shown, the optical imaging lens according to an exemplary embodiment of the present application includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8 and an imaging surface S17.

[0104] 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 concave and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being concave and its image-side surface S8 being concave. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has 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. Light from an object sequentially passes through surfaces S1 to S16 and is ultimately imaged on an imaging surface S17.

[0105] Table 4 shows the surface type, curvature radius, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 2, where the units of curvature radius and thickness are both millimeters (mm).

[0106]

[0107] Table 4

[0108] As can be seen from Table 4, in Example 2, both the object-side surface and the image-side surface of any of the first lens element E1 through the seventh lens element E7 are aspherical surfaces. Table 5 shows the high-order coefficients of the various aspherical mirror surfaces that can be used in Example 2, where the surface shape of each aspherical surface can be defined by Formula (1) given in Example 1 above.

[0109] Face number A4 A6 A8 A10 A12 A14 A16 A18 S1 9.5804E-03 -1.2400E-03 4.3520E-03 -2.0690E-03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 -1.0667E-02 2.0717E-02 -1.5850E-02 5.6846E-03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 1.4534E-02 2.9120E-03 2.7912E-02 -6.3056E-02 9.9329E-02 -8.4870E-02 3.8243E-02 -6.9732E-03 S4 3.2392E-02 -4.8180E-02 6.8480E-02 -1.4304E-01 2.9405E-01 -3.3977E-01 2.0053E-01 -5.1252E-02 S5 -2.8295E-02 -1.3320E-02 -3.7919E-01 5.2497E-01 -2.4360E-01 1.2963E-02 0.0000E+00 0.0000E+00 S6 -3.0525E-02 2.9405E-01 -3.2412E-01 -2.0615E-01 4.6221E-01 -2.0114E-01 0.0000E+00 0.0000E+00 S7 -1.0087E-03 5.3479E-01 -2.5740E-01 -6.2778E-01 8.4189E-01 -3.2251E-01 0.0000E+00 0.0000E+00 S8 -1.8317E-02 2.3391E-01 -3.6553E-01 3.7071E-01 -1.6756E-01 1.6818E-02 0.0000E+00 0.0000E+00 S9 -1.0107E-01 -3.5340E-02 9.8746E-02 -2.7198E-01 2.4337E-01 -8.4240E-02 0.0000E+00 0.0000E+00 S10 -4.2050E-02 -1.7410E-02 5.4168E-02 -1.2926E-01 1.3561E-01 -7.6940E-02 2.3790E-02 -3.3859E-03 S11 9.0010E-03 -4.6530E-02 6.0757E-02 -3.5350E-02 1.1726E-02 -2.3600E-03 2.7030E-04 -1.3308E-05 S12 7.1223E-02 -1.1574E-01 7.8927E-02 -2.9367E-02 6.5370E-03 -8.7000E-04 6.3847E-05 -1.8680E-06 S13 -3.5990E-02 2.2675E-02 -1.7970E-02 6.6637E-03 -1.0600E-03 5.0300E-05 3.7781E-06 -3.5044E-07 S14 -1.2728E-01 1.2182E-01 -7.0510E-02 2.4047E-02 -5.0300E-03 6.4100E-04 -4.5565E-05 1.3826E-06

[0110] Table 5

[0111] Table 6 shows the effective focal lengths f1 to f7 of each lens in Example 2, the total effective focal length f of the optical imaging lens, the total optical length TTL, and the maximum half field of view HFOV.

[0112] f1(mm) 2.87 f6(mm) 26.14 f2(mm) -5.43 f7(mm) -6.77 f3(mm) 13.75 f(mm) 7.07 f4(mm) -6.00 TTL(mm) 6.33 f5(mm) -256.03 HFOV(°) 24.2

[0113] Table 6

[0114] Figure 4A The axial chromatic aberration curve of the optical imaging lens of Example 2 is shown, which indicates the deviation of the focal point of light of different wavelengths passing through the lens. Figure 4B The astigmatism curve of the optical imaging lens of Example 2 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 4C The distortion curve of the optical imaging lens of Example 2 is shown, which represents the distortion magnitude values ​​under different viewing angles. Figure 4D The 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. Figures 4A to 4D It can be seen that the optical imaging lens provided in Example 2 can achieve good imaging quality.

[0115] Example 3

[0116] The following reference Figures 5 to 6D An optical imaging lens according to Example 3 of the present application is described. Figure 5 A schematic structural diagram of an optical imaging lens according to Example 3 of the present application is shown.

[0117] like Figure 5 As shown, the optical imaging lens according to an exemplary embodiment of the present application includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8 and an imaging surface S17.

[0118] 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 concave and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being concave and its image-side surface S8 being concave. The fifth lens E5 has positive optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has 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. Light from an object sequentially passes through surfaces S1 to S16 and is ultimately imaged on an imaging surface S17.

[0119] Table 7 shows the surface type, curvature radius, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 3, where the units of curvature radius and thickness are both millimeters (mm).

[0120]

[0121] Table 7

[0122] As can be seen from Table 7, in Example 3, both the object-side surface and the image-side surface of any of the first lens element E1 through the seventh lens element E7 are aspherical surfaces. Table 8 shows the high-order coefficients of the various aspherical mirror surfaces that can be used in Example 3, where the surface shape of each aspherical surface can be defined by Formula (1) given in Example 1 above.

[0123]

[0124]

[0125] Table 8

[0126] Table 9 shows the effective focal lengths f1 to f7 of each lens in Example 3, the total effective focal length f of the optical imaging lens, the total optical length TTL, and the maximum half field of view HFOV.

[0127] f1(mm) 3.14 f6(mm) 26.55 f2(mm) -4.92 f7(mm) -6.39 f3(mm) 8.81 f(mm) 7.10 f4(mm) -5.72 TTL(mm) 7.00 f5(mm) 17.89 HFOV(°) 25.0

[0128] Table 9

[0129] Figure 6A The axial chromatic aberration curve of the optical imaging lens of Example 3 is shown, which indicates the deviation of the focal point of light of different wavelengths passing through the lens. Figure 6B The astigmatism curve of the optical imaging lens of Example 3 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 6CThe distortion curve of the optical imaging lens of Example 3 is shown, which represents the distortion magnitude values ​​under different viewing angles. Figure 6D The 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. 6A to 6D It can be seen that the optical imaging lens provided in Example 3 can achieve good imaging quality.

[0130] Example 4

[0131] The following reference Figures 7 to 8D An optical imaging lens according to Example 4 of the present application is described. Figure 7 A schematic structural diagram of an optical imaging lens according to Example 4 of the present application is shown.

[0132] like Figure 7 As shown, the optical imaging lens according to an exemplary embodiment of the present application includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8 and an imaging surface S17.

[0133] 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 concave and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being concave and its image-side surface S8 being 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. Light from an object sequentially passes through surfaces S1 to S16 and is ultimately imaged on an imaging surface S17.

[0134] Table 10 shows the surface type, curvature radius, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 4, where the units of curvature radius and thickness are both millimeters (mm).

[0135]

[0136] Table 10

[0137] As can be seen from Table 10, in Example 4, both the object-side surface and the image-side surface of any of the first lens element E1 through the seventh lens element E7 are aspherical surfaces. Table 11 shows the high-order coefficients of the various aspherical mirror surfaces that can be used in Example 4, where the surface shape of each aspherical surface can be defined by Formula (1) given in Example 1 above.

[0138]

[0139]

[0140] Table 11

[0141] Table 12 shows the effective focal lengths f1 to f7 of each lens in Example 4, the total effective focal length f of the optical imaging lens, the total optical length TTL, and the maximum half field of view HFOV.

[0142] f1(mm) 3.12 f6(mm) 17.35 f2(mm) -5.51 f7(mm) -5.07 f3(mm) 19.13 f(mm) 7.19 f4(mm) -51.01 TTL(mm) 6.26 f5(mm) -11.66 HFOV(°) 24.7

[0143] Table 12

[0144] Figure 8A The axial chromatic aberration curve of the optical imaging lens of Example 4 is shown, which indicates the deviation of the focal point of light of different wavelengths passing through the lens. Figure 8B The astigmatism curve of the optical imaging lens of Example 4 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 8C The distortion curve of the optical imaging lens of Example 4 is shown, which represents the distortion magnitude values ​​under different viewing angles. Figure 8D The 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. Figures 8A to 8D It can be seen that the optical imaging lens provided in Example 4 can achieve good imaging quality.

[0145] Example 5

[0146] The following reference Figures 9 to 10D An optical imaging lens according to Example 5 of the present application is described. Figure 9 A schematic structural diagram of an optical imaging lens according to Example 5 of the present application is shown.

[0147] like Figure 9 As shown, the optical imaging lens according to an exemplary embodiment of the present application includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8 and an imaging surface S17.

[0148] 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 concave and its image-side surface S10 being convex. 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. Light from an object sequentially passes through surfaces S1 to S16 and is ultimately imaged on an imaging surface S17.

[0149] Table 13 shows the surface type, curvature radius, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 5, where the units of curvature radius and thickness are both millimeters (mm).

[0150]

[0151] Table 13

[0152] As can be seen from Table 13, in Example 5, both the object-side surface and the image-side surface of any of the first lens element E1 through the seventh lens element E7 are aspherical surfaces. Table 14 shows the high-order coefficients of the various aspherical mirror surfaces that can be used in Example 5, where the surface shape of each aspherical surface can be defined by Formula (1) given in Example 1 above.

[0153]

[0154]

[0155] Table 14

[0156] Table 15 shows the effective focal lengths f1 to f7 of each lens in Example 5, the total effective focal length f of the optical imaging lens, the total optical length TTL, and the maximum half field of view HFOV.

[0157] f1(mm) 2.85 f6(mm) 46.07 f2(mm) -5.10 f7(mm) -6.61 f3(mm) 40.73 f(mm) 7.19 f4(mm) -13.87 TTL(mm) 6.00 f5(mm) -14.58 HFOV(°) 24.6

[0158] Table 15

[0159] Figure 10A The axial chromatic aberration curve of the optical imaging lens of Example 5 is shown, which indicates the deviation of the focal point of light of different wavelengths passing through the lens. Figure 10B The astigmatism curve of the optical imaging lens of Example 5 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 10CThe distortion curve of the optical imaging lens of Example 5 is shown, which represents the distortion magnitude values ​​under different viewing angles. Figure 10D The 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. 10A to 10D It can be seen that the optical imaging lens provided in Example 5 can achieve good imaging quality.

[0160] Example 6

[0161] The following reference Figures 11 to 12D An optical imaging lens according to Example 6 of the present application is described. Figure 11 A schematic structural diagram of an optical imaging lens according to Example 6 of the present application is shown.

[0162] like Figure 11 As shown, the optical imaging lens according to an exemplary embodiment of the present application includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8 and an imaging surface S17.

[0163] 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 concave and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being concave and its image-side surface S8 being concave. The fifth lens E5 has positive optical power, with its object-side surface S9 being convex and its image-side surface S10 being convex. 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. Light from an object sequentially passes through surfaces S1 to S16 and is ultimately imaged on an imaging surface S17.

[0164] Table 16 shows the surface type, curvature radius, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 6, where the units of curvature radius and thickness are both millimeters (mm).

[0165]

[0166] Table 16

[0167] As can be seen from Table 16, in Example 6, both the object-side surface and the image-side surface of each lens element, from the first lens element E1 to the seventh lens element E7, are aspherical surfaces. Table 17 shows the high-order coefficients of the various aspherical mirror surfaces that can be used in Example 6, where the surface shape of each aspherical surface can be defined by Formula (1) given in Example 1 above.

[0168] Face number A4 A6 A8 A10 A12 S1 -4.5323E-04 -2.7000E-04 1.8430E-04 -4.4108E-05 -4.5353E-04 S2 -3.3914E-03 -1.7100E-04 4.5730E-05 1.0275E-04 1.6256E-04 S3 6.4604E-04 9.9600E-04 2.1374E-03 1.6951E-03 3.0695E-04 S4 2.9648E-03 6.0077E-03 2.5747E-03 2.0294E-03 4.5689E-03 S5 -2.4016E-02 1.9100E-02 3.4976E-03 1.8173E-03 1.8014E-05 S6 6.3044E-03 1.8941E-03 -6.0000E-04 8.1452E-05 1.1599E-03 S7 5.4439E-02 -2.1962E-02 2.3662E-03 1.0891E-03 -3.5463E-04 S8 -3.9991E-03 1.1343E-03 4.7290E-04 3.0047E-04 4.5980E-04 S9 -6.0632E-02 -1.0060E-02 -2.2820E-03 -1.0476E-03 -7.6776E-04 S10 -7.6647E-03 -1.7300E-03 -4.8900E-04 -8.1507E-05 1.2968E-06 S11 4.5008E-03 -9.6600E-05 -4.8000E-05 -1.1152E-05 -2.5418E-06 S12 1.2603E-02 -7.0490E-03 1.4325E-03 -1.0586E-04 -5.7539E-07 S13 -1.3941E-02 4.9130E-04 4.1670E-04 -3.5161E-05 -2.3548E-07 S14 -1.7316E-02 1.7296E-03 -1.3500E-04 1.0863E-05 -6.5496E-07

[0169] Table 17

[0170] Table 18 shows the effective focal lengths f1 to f7 of each lens in Example 6, the total effective focal length f of the optical imaging lens, the total optical length TTL, and the maximum half field of view HFOV.

[0171] f1(mm) 3.49 f6(mm) 23.14 f2(mm) -8.36 f7(mm) -5.40 f3(mm) 30.91 f(mm) 7.20 f4(mm) -7.14 TTL(mm) 6.43 f5(mm) 17.80 HFOV(°) 25.3

[0172] Table 18

[0173] Figure 12A The axial chromatic aberration curve of the optical imaging lens of Example 6 is shown, which indicates the deviation of the focal point of light of different wavelengths passing through the lens. Figure 12B The astigmatism curve of the optical imaging lens of Example 6 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 12C The distortion curve of the optical imaging lens of Example 6 is shown, which represents the distortion magnitude values ​​under different viewing angles. Figure 12D The 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. 12A to 12D It can be seen that the optical imaging lens provided in Example 6 can achieve good imaging quality.

[0174] Example 7

[0175] The following reference Figures 13 to 14D An optical imaging lens according to Example 7 of the present application is described. Figure 13 A schematic structural diagram of an optical imaging lens according to Example 7 of the present application is shown.

[0176] like Figure 13 As shown, the optical imaging lens according to an exemplary embodiment of the present application includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8 and an imaging surface S17.

[0177] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being concave and its image-side surface S8 being concave. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave 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. Light from an object sequentially passes through surfaces S1 to S16 and is ultimately imaged on an imaging surface S17.

[0178] Table 19 shows the surface type, curvature radius, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 7, where the units of curvature radius and thickness are both millimeters (mm).

[0179]

[0180]

[0181] Table 19

[0182] As can be seen from Table 19, in Example 7, both the object-side surface and the image-side surface of any of the first lens element E1 through the seventh lens element E7 are aspherical surfaces. Table 20 shows the high-order coefficients of the various aspherical mirror surfaces that can be used in Example 7, where the surface shape of each aspherical surface can be defined by Formula (1) given in Example 1 above.

[0183] Face number A4 A6 A8 A10 A12 S1 -8.7604E-04 -1.9000E-03 6.4160E-05 -1.1324E-05 -9.8222E-04 S2 -8.0133E-03 1.8929E-03 1.4140E-03 -3.1357E-05 -2.6385E-04 S3 1.5470E-02 8.4085E-03 6.3782E-03 3.7662E-03 -1.4588E-03 S4 3.5642E-03 1.2206E-02 9.3122E-03 5.2251E-03 8.6819E-03 S5 -3.3078E-02 -4.5570E-03 1.2006E-02 4.9977E-03 -6.4339E-03 S6 2.2222E-02 1.8308E-02 1.7022E-03 -7.3911E-03 -2.0316E-02 S7 8.1376E-02 9.6114E-03 1.9480E-03 -4.0087E-03 -5.4033E-03 S8 -3.1814E-02 -1.2474E-02 -6.4100E-03 2.1530E-03 7.3537E-03 S9 -1.1615E-01 -2.4073E-02 -1.5757E-02 -5.1996E-03 -9.0416E-03 S10 -5.8935E-03 -2.5590E-03 7.4720E-04 5.2460E-04 -3.1808E-06 S11 2.5192E-02 -4.4710E-03 -2.1400E-04 1.5361E-04 -2.6984E-05 S12 3.9161E-02 -9.1920E-03 9.8660E-04 -1.3976E-05 -1.1882E-05 S13 5.5931E-03 -1.6790E-03 4.3550E-04 -2.8666E-05 -1.1076E-06 S14 8.6814E-03 -3.0380E-03 3.4080E-04 1.7498E-06 -8.3533E-07

[0184] Table 20

[0185] Table 21 shows the effective focal lengths f1 to f7 of each lens in Example 7, the total effective focal length f of the optical imaging lens, the total optical length TTL, and the maximum half field of view HFOV.

[0186] f1(mm) 3.02 f6(mm) 20.94 f2(mm) -4.83 f7(mm) -6.91 f3(mm) 7.47 f(mm) 7.50 f4(mm) -5.97 TTL(mm) 6.43 f5(mm) -29.82 HFOV(°) 24.4

[0187] Table 21

[0188] Figure 14A The axial chromatic aberration curve of the optical imaging lens of Example 7 is shown, which indicates the deviation of the focal point of light of different wavelengths passing through the lens. Figure 14B The astigmatism curve of the optical imaging lens of Example 7 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 14CThe distortion curve of the optical imaging lens of Example 7 is shown, which represents the distortion magnitude values ​​under different viewing angles. Figure 14D The 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. 14A to 14D It can be seen that the optical imaging lens provided in Example 7 can achieve good imaging quality.

[0189] Example 8

[0190] The following reference Figures 15 to 16D An optical imaging lens according to Example 8 of the present application is described. Figure 15 A schematic structural diagram of an optical imaging lens according to Example 8 of the present application is shown.

[0191] like Figure 15 As shown, the optical imaging lens according to an exemplary embodiment of the present application includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8 and an imaging surface S17.

[0192] 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 concave and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being concave and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being concave and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has 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. Light from an object sequentially passes through surfaces S1 to S16 and is ultimately imaged on an imaging surface S17.

[0193] Table 22 shows the surface type, curvature radius, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 8, where the units of curvature radius and thickness are both millimeters (mm).

[0194]

[0195]

[0196] Table 22

[0197] As can be seen from Table 22, in Example 8, both the object-side surface and the image-side surface of any of the first lens element E1 through the seventh lens element E7 are aspherical surfaces. Table 23 shows the high-order coefficients of the various aspherical mirror surfaces that can be used in Example 8, where the surface shape of each aspherical surface can be defined by Formula (1) given in Example 1 above.

[0198] Face number A4 A6 A8 A10 A12 S1 -1.0342E-03 -6.6800E-04 -1.0700E-03 8.6413E-04 -5.2934E-04 S2 1.8735E-03 1.6047E-03 -6.7100E-04 -6.7983E-04 2.8628E-04 S3 1.6664E-02 8.3272E-03 -1.8770E-03 3.4113E-04 8.8339E-04 S4 1.1410E-02 4.8633E-03 3.0587E-03 -2.7835E-03 2.6835E-03 S5 -4.4190E-02 -3.2431E-02 -8.0610E-03 -1.2837E-02 4.5682E-03 S6 -1.0866E-02 -1.7633E-02 -1.5778E-02 2.4465E-04 1.7129E-03 S7 4.2638E-02 1.8684E-02 -3.2810E-03 -1.1031E-03 2.0125E-03 S8 -2.1180E-02 6.5970E-04 -3.0580E-03 -1.6391E-03 -3.4133E-04 S9 -9.3868E-02 -2.3423E-02 -6.0590E-03 -5.5233E-03 6.3734E-04 S10 -3.7199E-02 -6.3250E-03 9.0810E-04 8.0837E-04 3.4748E-04 S11 5.2947E-03 -1.1703E-02 -3.2080E-03 1.0770E-03 -2.0716E-04 S12 1.3741E-02 -1.0370E-02 -1.1760E-03 9.0900E-04 -4.5204E-05 S13 8.1915E-03 -6.2400E-04 2.0940E-04 -2.7469E-05 -9.3849E-07 S14 4.1361E-03 -4.2200E-04 9.4120E-05 8.8833E-06 -1.7981E-06

[0199] Table 23

[0200] Table 24 shows the effective focal lengths f1 to f7 of each lens in Example 8, the total effective focal length f of the optical imaging lens, the total optical length TTL, and the maximum half field of view HFOV.

[0201] f1(mm) 3.11 f6(mm) 202.17 f2(mm) -4.36 f7(mm) -7.57 f3(mm) 5.73 f(mm) 7.08 f4(mm) -8.94 TTL(mm) 6.43 f5(mm) -22.21 HFOV(°) 25.7

[0202] Table 24

[0203] Figure 16A The axial chromatic aberration curve of the optical imaging lens of Example 8 is shown, which indicates the deviation of the focal point of light of different wavelengths passing through the lens. Figure 16B The astigmatism curve of the optical imaging lens of Example 8 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 16C The distortion curve of the optical imaging lens of Example 8 is shown, which represents the distortion magnitude values ​​under different viewing angles. Figure 16D The 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. 16A to 16D It can be seen that the optical imaging lens provided in Example 8 can achieve good imaging quality.

[0204] Example 9

[0205] The following reference Figures 17 to 18D An optical imaging lens according to Example 9 of the present application is described. Figure 17 A schematic structural diagram of an optical imaging lens according to Example 9 of the present application is shown.

[0206] like Figure 17 As shown, the optical imaging lens according to an exemplary embodiment of the present application includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8 and an imaging surface S17.

[0207] 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 concave and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being concave and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being concave and its image-side surface S8 being concave. The fifth lens E5 has positive optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has negative optical power, with its object-side surface S11 being 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. Light from an object sequentially passes through surfaces S1 to S16 and is ultimately imaged on an imaging surface S17.

[0208] Table 25 shows the surface type, curvature radius, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 9, where the units of curvature radius and thickness are both millimeters (mm).

[0209]

[0210]

[0211] Table 25

[0212] As can be seen from Table 25, in Example 9, both the object-side surface and the image-side surface of any of the first lens element E1 through the seventh lens element E7 are aspherical surfaces. Table 26 shows the high-order coefficients of the various aspherical mirror surfaces that can be used in Example 9, where the surface shape of each aspherical surface can be defined by Formula (1) given in Example 1 above.

[0213] Face number A4 A6 A8 A10 S1 1.1359E-03 -1.4350E-03 2.1848E-03 -2.1564E-03 S2 -3.5738E-03 3.5121E-03 -1.7580E-03 8.8933E-04 S3 1.1652E-02 6.9666E-03 6.9492E-03 3.0423E-04 S4 1.3964E-02 9.7227E-03 5.9964E-03 8.0571E-03 S5 -3.3967E-02 2.3605E-02 1.4355E-03 -1.5550E-02 S6 8.0502E-03 -1.0353E-02 -1.2342E-02 -9.1960E-03 S7 8.3910E-02 -2.7834E-02 5.0557E-03 2.4762E-04 S8 -1.8414E-02 6.1896E-03 6.0170E-03 1.0423E-03 S9 -8.8863E-02 -2.4416E-02 -8.9900E-04 -8.0996E-03 S10 -2.0235E-02 -2.4080E-03 3.9780E-04 6.1930E-04 S11 6.8593E-03 -1.7900E-04 -6.0300E-05 -2.5670E-05 S12 1.7051E-02 -7.2150E-03 1.5600E-03 -1.2771E-04 S13 -1.3578E-02 7.1160E-04 2.9500E-04 -2.7374E-05 S14 -1.4207E-02 -1.0630E-03 3.3410E-04 -2.6684E-05

[0214] Table 26

[0215] Table 27 shows the effective focal lengths f1 to f7 of each lens in Example 9, the total effective focal length f of the optical imaging lens, the total optical length TTL, and the maximum half field of view HFOV.

[0216] f1(mm) 2.94 f6(mm) -430.87 f2(mm) -5.25 f7(mm) -6.97 f3(mm) 8.46 f(mm) 7.20 f4(mm) -6.06 TTL(mm) 6.33 f5(mm) 6646.43 HFOV(°) 25.3

[0217] Table 27

[0218] Figure 18A The axial chromatic aberration curve of the optical imaging lens of Example 9 is shown, which indicates the deviation of the focal point of light of different wavelengths passing through the lens. Figure 18B The astigmatism curve of the optical imaging lens of Example 9 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 18CThe distortion curve of the optical imaging lens of Example 9 is shown, which represents the distortion magnitude values ​​under different viewing angles. Figure 18D The chromatic aberration curve of the optical imaging lens of Example 9 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. 18A to 18D It can be seen that the optical imaging lens provided in Example 9 can achieve good imaging quality.

[0219] Example 10

[0220] The following reference Figures 19 to 20D An optical imaging lens according to Example 10 of the present application is described. Figure 19 A schematic structural diagram of an optical imaging lens according to Example 10 of the present application is shown.

[0221] like Figure 19 As shown, the optical imaging lens according to an exemplary embodiment of the present application includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8 and an imaging surface S17.

[0222] 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 convex. The fifth lens E5 has positive optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has 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. Light from an object sequentially passes through surfaces S1 to S16 and is ultimately imaged on an imaging surface S17.

[0223] Table 28 shows the surface type, curvature radius, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 10, where the units of curvature radius and thickness are both millimeters (mm).

[0224]

[0225]

[0226] Table 28

[0227] As can be seen from Table 28, in Example 10, both the object-side surface and the image-side surface of any of the first lens element E1 through the seventh lens element E7 are aspherical surfaces. Table 29 shows the high-order coefficients of the various aspherical mirror surfaces that can be used in Example 10, where the surface shape of each aspherical surface can be defined by Formula (1) given in Example 1 above.

[0228] Face number A4 A6 A8 A10 S1 -1.8946E-03 -8.3400E-04 6.6020E-04 -7.1523E-04 S2 1.0631E-03 1.0640E-04 -6.0200E-05 5.4177E-04 S3 7.6041E-05 1.9828E-03 1.9008E-03 1.5727E-04 S4 -2.1821E-03 4.8587E-03 2.7304E-03 8.9837E-04 S5 -1.8533E-02 2.3804E-03 2.2367E-03 2.3106E-03 S6 -1.2573E-02 -9.0800E-04 -8.1200E-04 1.7941E-03 S7 3.3862E-02 -7.7420E-03 3.8802E-03 -3.4160E-03 S8 -2.2193E-04 -5.7330E-03 -1.9240E-03 -9.4694E-05 S9 -8.1342E-02 -2.0436E-02 -1.1545E-02 1.5771E-03 S10 -2.9546E-02 -7.1600E-03 7.3530E-05 -5.0656E-05 S11 1.5292E-02 2.5450E-04 -2.4640E-03 -8.6741E-04 S12 2.8771E-02 -6.2490E-03 3.2960E-04 2.6145E-04 S13 -1.7218E-03 5.1010E-04 2.2520E-04 -3.0831E-05 S14 4.9621E-03 -1.3150E-03 7.4720E-05 5.8529E-06

[0229] Table 29

[0230] Table 30 shows the effective focal lengths f1 to f7 of each lens in Example 10, the total effective focal length f of the optical imaging lens, the total optical length TTL, and the maximum half field of view HFOV.

[0231]

[0232]

[0233] Table 30

[0234] Figure 20A The axial chromatic aberration curve of the optical imaging lens of Example 10 is shown, which indicates the deviation of the focal point of light of different wavelengths passing through the lens. Figure 20B The astigmatism curve of the optical imaging lens of Example 10 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 20C The distortion curve of the optical imaging lens of Example 10 is shown, which represents the distortion magnitude values ​​under different viewing angles. Figure 20D The chromatic aberration curve of the optical imaging lens of Example 10 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. 20A to 20D It can be seen that the optical imaging lens provided in Example 10 can achieve good imaging quality.

[0235] In summary, Examples 1 to 10 respectively satisfy the relationships shown in Table 31.

[0236]

[0237] Table 31

[0238] The present application also provides an imaging device, wherein the electronic photosensitive element thereof may be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS). The imaging device may be a standalone 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.

[0239] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the invention herein is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the inventive concept. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features having similar functions disclosed in this application.

Claims

1. An optical imaging lens, in order from the object side to the image side along the optical axis, includes: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens, It is characterized in that The first lens has positive optical power and its object side surface is convex; The second lens has negative optical power and its image side surface is concave; The third lens has positive optical power; The fourth lens has negative optical power and its object side surface is concave; The object-side surface of the sixth lens is concave, and the image-side surface is convex; The seventh lens has negative optical power, and its object side surface is concave; The optical power of the fifth lens and the sixth lens is negative-positive, positive-positive, or positive-negative; The effective focal length f7 of the seventh lens and the effective focal length f2 of the second lens satisfy 0.65≤f7 / f2≤1.74; The total effective focal length f of the optical imaging lens and the effective focal length f1 of the first lens satisfy 2.06≤f / f1≤2.52; and The number of lenses having optical power in the optical imaging lens is seven.

2. The optical imaging lens according to claim 1, wherein: An effective focal length f3 of the third lens, an effective focal length f4 of the fourth lens, and an effective focal length f5 of the fifth lens satisfy 0≤f3 / |f4+f5|≤2.

90.

3. The optical imaging lens according to claim 2, wherein: The effective focal length f3 of the third lens, the effective focal length f4 of the fourth lens, and a distance TTL from the center of the object-side surface of the first lens to the imaging plane of the optical imaging lens on the optical axis satisfy -5.09≤(f3+f4) / TTL≤4.

48.

4. The optical imaging lens according to claim 1, wherein: The maximum half field of view HFOV of the optical imaging lens satisfies 23.5≤HFOV≤25.

7.

5. The optical imaging lens according to claim 4, wherein: An effective focal length f7 of the seventh lens, a curvature radius R11 of the object-side surface of the sixth lens, and a curvature radius R12 of the image-side surface of the sixth lens satisfy -1.25≤f7 / |R11+R12|≤-0.

35.

6. The optical imaging lens according to claim 1, wherein: A curvature radius R3 of the object-side surface of the second lens and a curvature radius R4 of the image-side surface of the second lens satisfy 0.19≤|R3+R4| / |R3-R4|≤3.

16.

7. The optical imaging lens according to claim 6, wherein: The total effective focal length f of the optical imaging lens and the curvature radius R4 of the image-side surface of the second lens satisfy 1.13≤f / R4≤3.

08.

8. The optical imaging lens according to claim 1, wherein: A curvature radius R7 of the object-side surface of the fourth lens and a curvature radius R12 of the image-side surface of the sixth lens satisfy 0.35≤R7 / R12≤2.

62.

9. The optical imaging lens according to claim 1, wherein: The Abbe coefficient V5 of the fifth lens, the Abbe coefficient V6 of the sixth lens, and the Abbe coefficient V7 of the seventh lens satisfy (V5+V6) / V7=1.

43.

10. The optical imaging lens according to any one of claims 1 to 9, wherein: A sum ΣCT of the center thicknesses of the first to seventh lenses on the optical axis and a sum ΣAT of the spacing between any two adjacent lenses from the first to seventh lenses on the optical axis satisfy 0.74≤ΣCT / ΣAT≤2.11.

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