Optical imaging lens

Abstract

The application discloses an optical imaging lens, which comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens in sequence from the object side to the image side along the optical axis. The first lens has a negative focal power, the object side surface is a convex surface, and the image side surface is a concave surface; the second lens has a focal power; the third lens has a positive focal power; the fourth lens has a positive focal power; the fifth lens has a focal power; the sixth lens has a focal power; and the seventh lens has a negative focal power, and the object side surface and the image side surface are both concave surfaces. Wherein, the maximum effective half aperture diameter DT72 of the image side surface of the seventh lens and the maximum effective half aperture diameter DT71 of the object side surface of the seventh lens satisfy 1.5 < DT72 / DT71 < 2.

Description

[0001] Divisional application statement

[0002] This application is a divisional application of Chinese invention patent application filed on August 2, 2018, entitled "Optical Imaging Lens" and with application number 201810872496.X. Technical Field

[0003] This application relates to an optical imaging lens, and more specifically, to an optical imaging lens comprising seven lenses. Background Technology

[0004] In recent years, with the rapid upgrading of portable electronic products such as smartphones and tablets, the market demands increasingly higher requirements for camera lenses. In addition to requiring high resolution, large aperture, and large image sensor size, camera lenses also need to have a wide field of view and excellent image quality. However, with the trend towards thinner and lighter portable electronic products, meeting these market requirements has become a major challenge in the field of lens design. Summary of the Invention

[0005] This application provides an optical imaging lens that is applicable to portable electronic products and can at least partially solve at least one of the above-mentioned disadvantages in the prior art.

[0006] On one hand, this application provides an optical imaging lens comprising, along the optical axis from the object side to the image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The first lens may have negative optical power, its object side may be convex, and its image side may be concave; the second lens has optical power; the third lens may have positive optical power; the fourth lens may have positive optical power; the fifth lens has optical power; the sixth lens has optical power; and the seventh lens may have negative optical power, and both its object side and image side may be concave. The effective focal length f1 of the first lens and the total effective focal length f of the optical imaging lens satisfy -3.5 < f1 / f < -2.

[0007] In one embodiment, the total effective focal length f of the optical imaging lens, the effective focal length f2 of the second lens, and the effective focal length f5 of the fifth lens can satisfy |f / f2|+|f / f5|<0.6.

[0008] In one embodiment, the effective focal length f4 of the fourth lens and the effective focal length f3 of the third lens can satisfy 0 < f4 / f3 < 0.5.

[0009] In one embodiment, the radius of curvature R1 of the object side of the first lens and the radius of curvature R2 of the image side of the first lens can satisfy 2 < R1 / R2 < 3.

[0010] In one embodiment, the radius of curvature R3 of the object side of the second lens and the radius of curvature R4 of the image side of the second lens can satisfy 0.5 < R3 / R4 < 1.5.

[0011] In one embodiment, the radius of curvature R7 of the object side of the fourth lens and the total effective focal length f of the optical imaging lens can satisfy 1 < R7 / f < 1.8.

[0012] In one embodiment, the radius of curvature R14 of the image side of the seventh lens and the radius of curvature R13 of the object side of the seventh lens can satisfy -2.1 < R14 / R13 < 0.

[0013] In one embodiment, the distance T12 between the first lens and the second lens on the optical axis and half the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens can satisfy 0.7 < T12 / ImgH < 1.2.

[0014] In one embodiment, the center thickness CT6 of the sixth lens on the optical axis and the distance TTL from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis can satisfy 0.7 < CT6 / TTL*10 < 1.7.

[0015] In one embodiment, the center thickness CT7 of the seventh lens on the optical axis and the effective focal length f7 of the seventh lens satisfy -0.8 < CT7 / f7 < 0.

[0016] In one embodiment, the maximum effective half-aperture DT11 of the object side of the first lens and the maximum effective half-aperture DT12 of the image side of the first lens can satisfy 1.8 < DT11 / DT12 < 2.3.

[0017] In one embodiment, the maximum effective half-aperture DT72 of the image side of the seventh lens and the maximum effective half-aperture DT71 of the object side of the seventh lens can satisfy 1.5 < DT72 / DT71 < 2.

[0018] In one implementation, the maximum half field of view (HFOV) of the optical imaging lens can satisfy 72° < HFOV < 92°.

[0019] In one embodiment, the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens can satisfy f / EPD < 2.0.

[0020] On the other hand, this application provides an optical imaging lens comprising, sequentially from the object side to the image side along the optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The first lens may have negative optical power, its object side may be convex, and its image side may be concave; the second lens has optical power; the third lens may have positive optical power; the fourth lens may have positive optical power; the fifth lens has optical power; the sixth lens has optical power; and the seventh lens may have negative optical power, and both its object side and image side may be concave. The maximum effective half-aperture (DT72) of the image side of the seventh lens and the maximum effective half-aperture (DT71) of the object side of the seventh lens satisfy 1.5 < DT72 / DT71 < 2.

[0021] On another front, this application provides an optical imaging lens comprising, along the optical axis from the object side to the image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The first lens may have negative optical power, its object side may be convex, and its image side may be concave; the second lens has optical power; the third lens may have positive optical power; the fourth lens may have positive optical power; the fifth lens has optical power; the sixth lens has optical power; and the seventh lens may have negative optical power, and both its object side and image side may be concave. The radius of curvature R1 of the object side of the first lens and the radius of curvature R2 of the image side of the first lens may satisfy 2 < R1 / R2 < 3.

[0022] On another front, this application provides an optical imaging lens comprising, along the optical axis from the object side to the image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The first lens may have negative optical power, its object side may be convex, and its image side may be concave; the second lens has optical power; the third lens may have positive optical power; the fourth lens may have positive optical power; the fifth lens has optical power; the sixth lens has optical power; and the seventh lens may have negative optical power, and both its object side and image side may be concave. The radius of curvature R3 of the object side of the second lens and the radius of curvature R4 of the image side of the second lens may satisfy 0.5 < R3 / R4 < 1.5.

[0023] On another front, this application provides an optical imaging lens comprising, along the optical axis from the object side to the image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The first lens may have negative optical power, its object side may be convex, and its image side may be concave; the second lens has optical power; the third lens may have positive optical power; the fourth lens may have positive optical power; the fifth lens has optical power; the sixth lens has optical power; and the seventh lens may have negative optical power, and both its object side and image side may be concave. The maximum effective half-aperture DT11 of the object side of the first lens and the maximum effective half-aperture DT12 of the image side of the first lens satisfy 1.8 < DT11 / DT12 < 2.3.

[0024] This application employs seven lenses. By rationally allocating the optical power, surface shape, center thickness of each lens, and on-axis spacing between each lens, the aforementioned optical imaging lens achieves at least one beneficial effect, such as wide-angle, large aperture, miniaturization, and high imaging quality. Attached Figure Description

[0025] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments, taken in conjunction with the accompanying drawings. In the drawings:

[0026] Figure 1 A schematic diagram of the structure of an optical imaging lens according to Embodiment 1 of this application is shown;

[0027] Figures 2A to 2D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Example 1 are shown respectively.

[0028] Figure 3 A schematic diagram of the structure of an optical imaging lens according to Embodiment 2 of this application is shown;

[0029] Figures 4A to 4D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Example 2 are shown respectively.

[0030] Figure 5 A schematic diagram of the structure of an optical imaging lens according to Embodiment 3 of this application is shown;

[0031] Figures 6A to 6D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Example 3 are shown respectively.

[0032] Figure 7 A schematic diagram of the structure of an optical imaging lens according to Embodiment 4 of this application is shown;

[0033] Figures 8A to 8DThe on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Example 4 are shown respectively.

[0034] Figure 9 A schematic diagram of the structure of an optical imaging lens according to Embodiment 5 of this application is shown;

[0035] Figures 10A to 10D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Example 5 are shown respectively.

[0036] Figure 11 A schematic diagram of the structure of an optical imaging lens according to Embodiment 6 of this application is shown;

[0037] Figures 12A to 12D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Example 6 are shown respectively.

[0038] Figure 13 A schematic diagram of the structure of an optical imaging lens according to Embodiment 7 of this application is shown;

[0039] Figures 14A to 14D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Example 7 are shown respectively.

[0040] Figure 15 A schematic diagram of the structure of an optical imaging lens according to Embodiment 8 of this application is shown;

[0041] Figures 16A to 16D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Example 8 are shown respectively.

[0042] Figure 17 A schematic diagram of the structure of an optical imaging lens according to Embodiment 9 of this application is shown;

[0043] Figures 18A to 18D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Example 9 are shown respectively.

[0044] Figure 19 A schematic diagram of the structure of an optical imaging lens according to Embodiment 10 of this application is shown;

[0045] Figures 20A to 20D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Example 10 are shown respectively. Detailed Implementation

[0046] 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.

[0047] 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.

[0048] 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.

[0049] In this paper, 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 object side is called the object-side surface of the lens, and the surface of each lens closest to the image side is called the image-side surface of the lens.

[0050] 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.

[0051] 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 the meaning consistent with their meaning in the context of the relevant art and shall not be interpreted in an idealized or overly formal sense unless expressly so specified herein.

[0052] 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.

[0053] The features, principles and other aspects of this application are described in detail below.

[0054] 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, and each adjacent lens may have an air gap.

[0055] In an exemplary embodiment, the first lens may have negative optical power, its object-side surface may be convex, and its image-side surface may be concave; the second lens may have positive or negative optical power; the third lens may have positive optical power; the fourth lens may have positive optical power; the fifth lens may have positive or negative optical power; the sixth lens may have positive or negative optical power; and the seventh lens may have negative optical power, its object-side surface may be concave, and its image-side surface may be concave. Reasonably distributing the optical power of the system and avoiding excessive concentration of optical power can reduce the sensitivity of individual lenses, providing more relaxed tolerance conditions for actual processing and assembly.

[0056] In an exemplary embodiment, the optical imaging lens of this application can satisfy the condition -3.5 < f1 / f < -2, where f is the total effective focal length of the optical imaging lens and f1 is the effective focal length of the first lens. More specifically, f and f1 can further satisfy -3.27 ≤ f1 / f ≤ -2.01. Satisfying the condition -3.5 < f1 / f < -2 increases the field of view, reduces the incident angle of light at the second lens, and simultaneously reduces the aperture of subsequent lenses, maintaining lens miniaturization.

[0057] In an exemplary embodiment, the optical imaging lens of this application can satisfy the condition |f / f2|+|f / f5|<0.6, where f is the total effective focal length of the optical imaging lens, f2 is the effective focal length of the second lens, and f5 is the effective focal length of the fifth lens. More specifically, f, f2, and f5 can further satisfy 0<|f / f2|+|f / f5|<0.6, for example, 0.05≤|f / f2|+|f / f5|≤0.54. By reasonably controlling the optical power of the second and fifth lenses, the advanced coma and transverse chromatic aberration generated by the second and fifth lenses can be effectively balanced, while the aperture of the third and fourth lenses can be reduced.

[0058] In an exemplary embodiment, the optical imaging lens of this application can satisfy the condition 0 < f4 / f3 < 0.5, where f4 is the effective focal length of the fourth lens and f3 is the effective focal length of the third lens. More specifically, f4 and f3 can further satisfy 0.01 ≤ f4 / f3 ≤ 0.25. Reasonably allocating the optical power of the third and fourth lenses can effectively reduce the advanced spherical aberration and astigmatism generated by the third and fourth lenses, while also mitigating the deflection angle of light in the third and fourth lenses, thus reducing the sensitivity of these two lenses.

[0059] In an exemplary embodiment, the optical imaging lens of this application can satisfy the condition -0.8 < CT7 / f7 < 0, where CT7 is the center thickness of the seventh lens on the optical axis, and f7 is the effective focal length of the seventh lens. More specifically, CT7 and f7 can further satisfy -0.67 ≤ CT7 / f7 ≤ -0.20. By reasonably controlling the optical power and center thickness of the seventh lens, the system size can be reduced while effectively balancing the distortion and chromatic aberration not completely eliminated by the front-end lens, further improving the imaging quality of the lens.

[0060] In an exemplary embodiment, the optical imaging lens of this application can satisfy the condition 2 < R1 / R2 < 3, where R1 is the radius of curvature of the object-side surface of the first lens, and R2 is the radius of curvature of the image-side surface of the first lens. More specifically, R1 and R2 can further satisfy 2.18 ≤ R1 / R2 ≤ 2.68. Reasonably allocating the radii of curvature of the object-side and image-side surfaces of the first lens avoids excessively large incident and exit angles of light from the first lens, reducing lens sensitivity, while simultaneously increasing the acceptable field of view range of the lens.

[0061] In an exemplary embodiment, the optical imaging lens of this application can satisfy the condition 0.5 < R3 / R4 < 1.5, where R3 is the radius of curvature of the object-side surface of the second lens, and R4 is the radius of curvature of the image-side surface of the second lens. More specifically, R3 and R4 can further satisfy 0.57 ≤ R3 / R4 ≤ 1.41. Reasonably controlling the radii of curvature of the object-side and image-side surfaces of the second lens can mitigate the deflection angle of light in the second lens, while effectively balancing the chromatic aberration and distortion generated by the first lens.

[0062] In an exemplary embodiment, the optical imaging lens of this application can satisfy the condition 1 < R7 / f < 1.8, where R7 is the radius of curvature of the object-side surface of the fourth lens, and f is the total effective focal length of the optical imaging lens. More specifically, R7 and f can further satisfy 1.14 ≤ R7 / f ≤ 1.66. By reasonably controlling the radius of curvature of the object-side surface of the fourth lens and the total effective focal length of the optical imaging lens, the incident angle of light at the fourth lens can be reduced, while effectively balancing the residual advanced spherical aberration and astigmatism of the front lens.

[0063] In an exemplary embodiment, the optical imaging lens of this application can satisfy the condition -2.1 < R14 / R13 < 0, where R14 is the radius of curvature of the image-side surface of the seventh lens, and R13 is the radius of curvature of the object-side surface of the seventh lens. More specifically, R14 and R13 can further satisfy -2.09 ≤ R14 / R13 ≤ -0.01. Reasonably controlling the radii of curvature of the object-side and image-side surfaces of the seventh lens can reduce the incident angle of light on the image plane, enhance the illumination of the edge field of view, and simultaneously facilitate the matching of the lens with the principal ray angle (CRA) of the chip.

[0064] In an exemplary embodiment, the optical imaging lens of this application satisfies the condition 72° < HFOV < 92°, where HFOV is the maximum half-field of view of the optical imaging lens. More specifically, HFOV can further satisfy 72.5° ≤ HFOV ≤ 91.0°. While ensuring lens miniaturization, controlling the field of view avoids excessive aberrations and low illumination at the edges of the field of view, thus helping to ensure excellent imaging quality over a wide field of view.

[0065] In an exemplary embodiment, the optical imaging lens of this application can satisfy the condition f / EPD < 2.0, where f is the total effective focal length of the optical imaging lens and EPD is the entrance pupil diameter of the optical imaging lens. More specifically, f and EPD can further satisfy 1.78 ≤ f / EPD ≤ 1.86. By controlling f / EPD < 2.0, the amount of light transmitted by the lens per unit time can be effectively increased, the illuminance of the edge field of view can be improved, and the lens can be guaranteed to have good shooting performance even in low-light environments.

[0066] In an exemplary embodiment, the optical imaging lens of this application can satisfy the condition 0.7 < T12 / ImgH < 1.2, where T12 is the distance between the first lens and the second lens on the optical axis, and ImgH is half the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens. More specifically, T12 and ImgH can further satisfy 0.97 ≤ T12 / ImgH ≤ 1.14. Reasonably controlling the air gap between the first lens and the second lens on the optical axis not only facilitates lens assembly but also shortens the lens size. Simultaneously, it can reduce the incident angle of light entering the second lens, thereby reducing the lens's sensitivity.

[0067] In an exemplary embodiment, the optical imaging lens of this application can satisfy the condition 1.8 < DT11 / DT12 < 2.3, where DT11 is the maximum effective half-aperture of the object-side surface of the first lens, and DT12 is the maximum effective half-aperture of the image-side surface of the first lens. More specifically, DT11 and DT12 can further satisfy 1.92 ≤ DT11 / DT12 ≤ 2.21. By controlling the maximum effective half-aperture of the object-side and image-side surfaces of the first lens within a reasonable range, it is beneficial to reduce the size of the lens front end and increase the light transmission per unit time in the edge field of view, thereby improving the illuminance of the edge field of view.

[0068] In an exemplary embodiment, the optical imaging lens of this application satisfies the condition 1.5 < DT72 / DT71 < 2, where DT72 is the maximum effective half-aperture of the image-side surface of the seventh lens, and DT71 is the maximum effective half-aperture of the object-side surface of the seventh lens. More specifically, DT72 and DT71 can further satisfy 1.63 ≤ DT72 / DT71 ≤ 1.84. By controlling the maximum effective half-aperture of the object-side and image-side surfaces of the seventh lens, the rear-end size of the lens can be reduced while ensuring illumination at the edge of the field of view. Furthermore, it is beneficial for blocking light rays with poor imaging quality at the edge of the field of view, ensuring excellent imaging quality of the lens.

[0069] In an exemplary embodiment, the optical imaging lens of this application can satisfy the condition 0.7 < CT6 / TTL*10 < 1.7, where CT6 is the center thickness of the sixth lens on the optical axis, and TTL is the distance on the optical axis from the object-side surface of the first lens to the imaging surface of the optical imaging lens. More specifically, CT6 and TTL can further satisfy 0.96 ≤ CT6 / TTL*10 ≤ 1.58. Reasonably controlling the center thickness of the sixth lens on the optical axis and the axial distance from the object-side surface of the first lens to the imaging surface can ensure lens miniaturization while avoiding problems such as manufacturing difficulties caused by excessively thin lenses. Furthermore, satisfying the condition 0.7 < CT6 / TTL*10 < 1.7 also helps to mitigate the deflection angle of light in the sixth lens, further balancing the advanced coma and astigmatism not completely eliminated by the front-end lens.

[0070] In an exemplary embodiment, the optical imaging lens may further include an aperture stop to improve the image quality of the lens. Optionally, the aperture stop may be disposed between the third lens and the fourth lens.

[0071] Optionally, the aforementioned optical imaging lens may also include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging surface.

[0072] The optical imaging lens according to the above embodiments of this application can employ multiple lenses, such as the seven lenses described above. By rationally allocating the optical power, surface shape, center thickness of each lens, and on-axis spacing between each lens, the size of the lens can be effectively reduced, the sensitivity of the lens can be decreased, and the manufacturability of the lens can be improved, making the optical imaging lens more conducive to production and processing and suitable for portable electronic products. The optical imaging lens configured as described above can also have beneficial effects such as wide angle, large aperture, and excellent image quality.

[0073] In the embodiments of this application, at least one of the mirror surfaces of each lens is an aspherical mirror surface. An aspherical lens is characterized by a continuously changing curvature from the lens center to the lens periphery. Unlike a spherical lens, which has a constant curvature from the lens center to the lens periphery, an aspherical lens has superior curvature radius characteristics, offering advantages in improving distortion aberrations and astigmatism. By using an aspherical lens, aberrations occurring during imaging can be eliminated as much as possible, thereby improving image quality.

[0074] 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.

[0075] The following describes in further detail, with reference to the accompanying drawings, specific embodiments of the optical imaging lens applicable to the above-described embodiments.

[0076] Example 1

[0077] 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.

[0078] like Figure 1 As shown, the optical imaging lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and an imaging plane S15.

[0079] The first lens E1 has negative optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being concave and its image-side surface S6 being convex. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex 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 convex 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. Light from the object passes sequentially through surfaces S1 to S14 and is finally imaged on the imaging surface S15.

[0080] Optionally, an aperture stop (not shown) may be provided between the third lens E3 and the fourth lens E4 to improve the image quality of the lens.

[0081] Table 1 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens in the optical imaging lens of Example 1, wherein the units for radius of curvature and thickness are millimeters (mm).

[0082]

[0083] Table 1

[0084] As shown in Table 1, the object-side surface and image-side surface of any one of the lenses, from the first lens E1 to the seventh lens E7, are aspherical. In this embodiment, the surface shape x of each aspherical lens can be defined using, but is not limited to, the following aspherical formula:

[0085]

[0086] Where x is the distance vector from the vertex of the aspherical surface at a height of h along the optical axis; c is the paraxial curvature of the aspherical surface, c = 1 / R (i.e., the paraxial curvature c is the reciprocal of the radius of curvature R in Table 1 above); k is the conic coefficient (given in Table 1); Ai is the i-th order correction coefficient of the aspherical surface. Table 2 below gives the higher-order coefficients A4, A6, A8, A14 that can be used for each aspherical mirror S1-S14 in Example 1. 10 A 12 A 14 A 16 A 18 and A 20 .

[0087] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 1.5210E-03 -3.8000E-04 9.4300E-05 -2.2000E-05 3.2100E-06 -2.8000E-07 1.5100E-08 -4.3000E-10 4.9200E-12 S2 5.6050E-03 -4.1760E-02 1.1020E-01 -1.5605E-01 1.3941E-01 -7.8330E-02 2.7064E-02 -5.2600E-03 4.4400E-04 S3 -2.6300E-03 -3.1700E-02 9.7536E-02 -2.9315E-01 5.2235E-01 -5.8974E-01 4.0308E-01 -1.5251E-01 2.4569E-02 S4 1.5569E-02 -1.0074E-01 3.0540E-01 -9.4765E-01 1.7507E+00 -2.0505E+00 1.5051E+00 -6.2760E-01 1.1321E-01 S5 -6.3940E-02 2.7900E-04 -2.7197E-01 1.0139E+00 -2.1509E+00 3.0204E+00 -2.6341E+00 1.2637E+00 -2.5387E-01 S6 -8.4600E-03 -2.9500E-02 -1.6720E-02 5.3413E-01 -1.8709E+00 3.5992E+00 -3.9235E+00 2.2171E+00 -5.0357E-01 S7 9.6840E-03 -4.5800E-02 2.7208E-01 -9.6827E-01 2.1969E+00 -3.1502E+00 2.7733E+00 -1.3720E+00 2.9449E-01 S8 -9.0830E-02 7.5815E-02 -2.5627E-01 1.8383E+00 -7.3440E+00 1.7014E+01 -2.2726E+01 1.6272E+01 -4.8404E+00 S9 -3.9100E-01 5.0559E-01 -1.8943E+00 6.4922E+00 -1.4699E+01 2.2015E+01 -2.0728E+01 1.0760E+01 -2.2793E+00 S10 -1.2171E-01 -4.1811E-01 2.1518E+00 -5.5034E+00 9.7928E+00 -1.1733E+01 8.9162E+00 -3.8817E+00 7.3836E-01 S11 2.7709E-02 -9.9310E-02 4.2224E-01 -8.5033E-01 1.0106E+00 -7.5866E-01 3.5590E-01 -9.5700E-02 1.1308E-02 S12 -1.6518E-01 1.1709E-01 -2.8910E-02 -8.9500E-02 9.6302E-02 -3.1550E-02 -9.8300E-03 1.0568E-02 -2.2900E-03 S13 -3.8304E-01 1.5580E-01 -1.0646E-01 3.9396E-01 -8.4420E-01 9.5411E-01 -6.0319E-01 2.0408E-01 -2.8970E-02 S14 -6.2840E-02 1.2590E-02 5.7450E-03 -6.7800E-03 2.8160E-03 -6.5000E-04 8.7000E-05 -5.6000E-06 9.6200E-08

[0088] Table 2

[0089] Table 3 shows the effective focal lengths f1 to f7 of each lens in Example 1, the total effective focal length f of the optical imaging lens, the distance TTL between the object surface S1 and the imaging surface S15 of the first lens E1 on the optical axis, and the maximum half field of view HFOV.

[0090] f1(mm) -3.55 f6 (mm) 2.14 f2 (mm) 7.75 f7 (mm) -1.87 f3 (mm) 56.00 f(mm) 1.65 f4 (mm) 2.94 TTL(mm) 7.70 f5 (mm) -5.10 HFOV (°) 91.0

[0091] Table 3

[0092] The optical imaging lens in Example 1 satisfies:

[0093] f1 / f = -2.15, where f is the total effective focal length of the optical imaging lens and f1 is the effective focal length of the first lens E1;

[0094] |f / f2|+|f / f5|=0.54, where f is the total effective focal length of the optical imaging lens, f2 is the effective focal length of the second lens E2, and f5 is the effective focal length of the fifth lens E5;

[0095] f4 / f3 = 0.05, where f4 is the effective focal length of the fourth lens E4 and f3 is the effective focal length of the third lens E3;

[0096] CT7 / f7=-0.57, where CT7 is the center thickness of the seventh lens E7 on the optical axis, and f7 is the effective focal length of the seventh lens E7;

[0097] R1 / R2 = 2.65, where R1 is the radius of curvature of the object side surface S1 of the first lens E1, and R2 is the radius of curvature of the image side surface S2 of the first lens E1.

[0098] R3 / R4 = 0.57, where R3 is the radius of curvature of the object side surface S3 of the second lens E2, and R4 is the radius of curvature of the image side surface S4 of the second lens E2.

[0099] R7 / f = 1.30, where R7 is the radius of curvature of the object side surface S7 of the fourth lens E4, and f is the total effective focal length of the optical imaging lens;

[0100] R14 / R13=-1.21, where R14 is the radius of curvature of the image side surface S14 of the seventh lens E7, and R13 is the radius of curvature of the object side surface S13 of the seventh lens E7.

[0101] f / EPD = 1.78, where f is the total effective focal length of the optical imaging lens and EPD is the entrance pupil diameter of the optical imaging lens;

[0102] T12 / ImgH=1.06, where T12 is the distance between the first lens E1 and the second lens E2 on the optical axis, and ImgH is half the diagonal length of the effective pixel area on the imaging surface S15;

[0103] DT11 / DT12 = 2.03, where DT11 is the maximum effective half-aperture of the object side surface S1 of the first lens E1, and DT12 is the maximum effective half-aperture of the image side surface S2 of the first lens E1.

[0104] DT72 / DT71 = 1.70, where DT72 is the maximum effective half-aperture of the image side surface S14 of the seventh lens E7, and DT71 is the maximum effective half-aperture of the object side surface S13 of the seventh lens E7.

[0105] CT6 / TTL*10=1.25, where CT6 is the center thickness of the sixth lens E6 on the optical axis, and TTL is the distance on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S15.

[0106] Figure 2A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 1 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 2B The astigmatism curve of the optical imaging lens of Embodiment 1 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 2C The distortion curve of the optical imaging lens of Example 1 is shown, which represents the distortion magnitude under different field of view conditions. Figure 2D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 1 is shown, which represents the deviation of light at different image heights on the imaging plane after passing through the lens. According to Figures 2A to 2D It can be seen that the optical imaging lens given in Example 1 can achieve good imaging quality.

[0107] Example 2

[0108] 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.

[0109] like Figure 3 As shown, the optical imaging lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and an imaging plane S15.

[0110] The first lens E1 has negative 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 positive optical power, with its object-side surface S7 being convex 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 convex 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. Light from the object passes sequentially through surfaces S1 to S14 and is finally imaged on the imaging surface S15.

[0111] Optionally, an aperture stop (not shown) may be provided between the third lens E3 and the fourth lens E4 to improve the image quality of the lens.

[0112] Table 4 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens in the optical imaging lens of Example 2, wherein the units for radius of curvature and thickness are millimeters (mm).

[0113]

[0114] Table 4

[0115] As shown in Table 4, in Example 2, the object-side surface and image-side surface of any one of the lenses from the first lens E1 to the seventh lens E7 are aspherical. Table 5 shows the higher-order coefficients that can be used for each aspherical mirror in Example 2, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0116] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 2.7790E-03 -1.8000E-04 -2.5000E-05 7.9500E-06 -2.1000E-06 3.4500E-07 -3.0000E-08 1.3500E-09 -2.6000E-11 S2 -1.4670E-02 -1.6910E-02 7.2330E-02 -1.2664E-01 1.3806E-01 -9.3990E-02 3.9270E-02 -9.2200E-03 9.4200E-04 S3 2.1637E-02 -7.2840E-02 5.5389E-02 -1.5449E-01 2.2512E-01 -1.9194E-01 1.0309E-01 -2.9410E-02 2.8850E-03 S4 4.9291E-02 -1.6569E-01 3.0903E-01 -1.3293E+00 3.3180E+00 -5.0876E+00 4.9582E+00 -2.7674E+00 6.6996E-01 S5 -3.3300E-03 -9.0580E-02 5.4912E-02 -2.0358E-01 3.5136E-01 -3.1312E-01 5.4000E-01 -6.5968E-01 2.7339E-01 S6 3.1220E-03 2.5278E-02 -3.7902E-01 1.9758E+00 -6.0571E+00 1.0985E+01 -1.1394E+01 6.1882E+00 -1.3582E+00 S7 6.4420E-03 1.5714E-02 -2.1610E-02 6.4886E-01 -3.8550E+00 1.0689E+01 -1.5901E+01 1.2323E+01 -3.9268E+00 S8 -6.9810E-02 1.4968E-01 -4.8586E-01 2.4619E+00 -8.3050E+00 1.7556E+01 -2.2412E+01 1.5834E+01 -4.7684E+00 S9 -2.0842E-01 -2.7342E-01 1.6615E+00 -6.4976E+00 1.8568E+01 -3.5791E+01 4.3273E+01 -2.9600E+01 8.7083E+00 S10 -3.8700E-02 -4.6346E-01 1.8985E+00 -4.6377E+00 8.0793E+00 -9.7169E+00 7.5920E+00 -3.4471E+00 6.8752E-01 S11 -2.2740E-02 5.8464E-02 3.0093E-02 -2.0547E-01 3.0025E-01 -2.4029E-01 1.1556E-01 -3.1790E-02 3.8850E-03 S12 -1.3740E-01 5.3255E-02 1.0461E-01 -3.4350E-01 4.7373E-01 -3.9110E-01 1.8904E-01 -4.7240E-02 4.4730E-03 S13 -2.8947E-01 3.6742E-02 1.7088E-01 -3.2244E-01 3.1077E-01 -1.6724E-01 4.0954E-02 3.4300E-03 -2.6800E-03 S14 -5.0760E-02 -1.0210E-02 3.0616E-02 -2.5430E-02 1.2202E-02 -3.7700E-03 7.3000E-04 -8.0000E-05 3.7800E-06

[0117] Table 5

[0118] Table 6 shows the effective focal lengths f1 to f7 of each lens in Example 2, the total effective focal length f of the optical imaging lens, the distance TTL between the object surface S1 and the imaging surface S15 of the first lens E1 on the optical axis, and the maximum half field of view HFOV.

[0119] f1(mm) -3.40 f6 (mm) 2.18 f2 (mm) -66.12 f7 (mm) -1.98 f3 (mm) 13.84 f(mm) 1.60 f4 (mm) 2.45 TTL(mm) 7.60 f5 (mm) -5.76 HFOV (°) 89.8

[0120] Table 6

[0121] Figure 4A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 2 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 4B The astigmatism curve of the optical imaging lens of Embodiment 2 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 4C The distortion curve of the optical imaging lens of Example 2 is shown, which represents the distortion magnitude under different field of view conditions. Figure 4D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 2 is shown, which represents the deviation of light at different image heights on the imaging plane after passing through the lens. According to... Figures 4A to 4D It can be seen that the optical imaging lens given in Example 2 can achieve good imaging quality.

[0122] Example 3

[0123] 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.

[0124] like Figure 5 As shown, the optical imaging lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and an imaging plane S15.

[0125] The first lens E1 has negative optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex 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 convex 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. Light from the object passes sequentially through surfaces S1 to S14 and is finally imaged on the imaging surface S15.

[0126] Optionally, an aperture stop (not shown) may be provided between the third lens E3 and the fourth lens E4 to improve the image quality of the lens.

[0127] Table 7 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens in the optical imaging lens of Example 3, wherein the units for radius of curvature and thickness are millimeters (mm).

[0128]

[0129] Table 7

[0130] As shown in Table 7, in Example 3, the object-side surface and image-side surface of any one of the lenses from the first lens E1 to the seventh lens E7 are aspherical. Table 8 shows the higher-order coefficients that can be used for each aspherical mirror surface in Example 3, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0131]

[0132]

[0133] Table 8

[0134] Table 9 shows the effective focal lengths f1 to f7 of each lens in Example 3, the total effective focal length f of the optical imaging lens, the distance TTL between the object surface S1 and the imaging surface S15 of the first lens E1 on the optical axis, and the maximum half field of view HFOV.

[0135] f1(mm) -3.32 f6 (mm) 2.14 f2 (mm) 61.05 f7 (mm) -1.97 f3 (mm) 21.89 f(mm) 1.60 f4 (mm) 2.45 TTL(mm) 7.60 f5 (mm) -5.24 HFOV (°) 73.8

[0136] Table 9

[0137] Figure 6A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 3 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 6B The astigmatism curve of the optical imaging lens of Embodiment 3 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 6C The distortion curve of the optical imaging lens of Example 3 is shown, which represents the distortion magnitude under different field of view conditions. Figure 6D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 3 is shown, which represents the deviation of light at different image heights on the imaging plane after passing through the lens. According to... Figures 6A to 6D It can be seen that the optical imaging lens given in Example 3 can achieve good imaging quality.

[0138] Example 4

[0139] 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.

[0140] like Figure 7 As shown, the optical imaging lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and an imaging plane S15.

[0141] The first lens E1 has negative optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has positive optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex 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. Light from the object passes sequentially through surfaces S1 to S14 and is finally imaged on the imaging surface S15.

[0142] Optionally, an aperture stop (not shown) may be provided between the third lens E3 and the fourth lens E4 to improve the image quality of the lens.

[0143] Table 10 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens in the optical imaging lens of Example 4, wherein the units for radius of curvature and thickness are millimeters (mm).

[0144]

[0145] Table 10

[0146] As shown in Table 10, in Example 4, the object-side surface and image-side surface of any one of the lenses from the first lens E1 to the seventh lens E7 are aspherical. Table 11 shows the higher-order coefficients that can be used for each aspherical mirror in Example 4, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0147] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 1.9526E-03 -4.6000E-04 -3.0000E-06 1.2700E-05 -1.9000E-06 1.4800E-07 -8.8000E-09 4.3000E-10 -1.0000E-11 S2 -2.7546E-02 -5.5000E-03 6.1282E-02 -1.2133E-01 1.3874E-01 -9.6760E-02 4.0790E-02 -9.5700E-03 9.6700E-04 S3 2.3017E-02 -7.4540E-02 1.3126E-01 -4.6252E-01 8.9579E-01 -1.0381E+00 7.2798E-01 -2.8343E-01 4.7029E-02 S4 4.6887E-02 -1.2925E-01 3.1133E-02 -3.0601E-01 1.0336E+00 -1.5885E+00 1.4208E+00 -7.1636E-01 1.5712E-01 S5 8.8619E-03 -1.2739E-01 -7.3300E-02 4.0423E-01 -6.5290E-01 9.8500E-01 -1.1528E+00 6.9028E-01 -1.5030E-01 S6 2.6900E-02 -2.4700E-02 -3.8058E-01 2.2691E+00 -6.7837E+00 1.2402E+01 -1.3675E+01 8.0620E+00 -1.9160E+00 S7 1.0794E-02 -1.6400E-02 2.2530E-01 -1.2916E+00 4.3554E+00 -9.1934E+00 1.1910E+01 -8.6922E+00 2.7678E+00 S8 -9.6430E-02 1.0861E-01 3.0031E-02 2.2112E-02 -1.2554E+00 5.1920E+00 -9.6114E+00 8.6875E+00 -3.0794E+00 S9 2.9150E-03 -1.6322E+00 6.2486E+00 -1.8374E+01 4.2088E+01 -6.7975E+01 7.1113E+01 -4.3604E+01 1.2018E+01 S10 2.6093E-02 -1.0366E+00 3.2216E+00 -6.8263E+00 1.3662E+01 -2.1916E+01 2.2767E+01 -1.3142E+01 3.2003E+00 S11 1.4952E-01 -4.5168E-01 5.9041E-01 8.3714E-01 -3.8664E+00 5.5603E+00 -4.1080E+00 1.5744E+00 -2.4843E-01 S12 -1.2956E-01 9.5687E-02 -5.2560E-02 -3.8150E-02 1.7872E-02 8.5145E-02 -1.2581E-01 6.8959E-02 -1.3500E-02 S13 -3.2198E-01 1.8804E-01 -4.2323E-01 1.2056E+00 -2.3631E+00 2.8923E+00 -2.0996E+00 8.3162E-01 -1.3799E-01 S14 -7.0883E-02 2.5429E-02 -4.2900E-03 -2.7100E-03 2.0690E-03 -6.9000E-04 1.3100E-04 -1.4000E-05 6.5500E-07

[0148] Table 11

[0149] Table 12 shows the effective focal lengths f1 to f7 of each lens in Example 4, the total effective focal length f of the optical imaging lens, the distance TTL between the object surface S1 and the imaging surface S15 of the first lens E1 on the optical axis, and the maximum half field of view HFOV.

[0150] f1(mm) -3.34 f6 (mm) 2.52 f2 (mm) 45.44 f7 (mm) -1.74 f3 (mm) 272.93 f(mm) 1.56 f4 (mm) 2.35 TTL(mm) 7.46 f5 (mm) 129.82 HFOV (°) 72.5

[0151] Table 12

[0152] Figure 8A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 4 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 8B The astigmatism curve of the optical imaging lens of Embodiment 4 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 8C The distortion curve of the optical imaging lens of Example 4 is shown, which represents the distortion magnitude under different field of view conditions. Figure 8D The magnification chromatic aberration curve of the optical imaging lens of Example 4 is shown, which represents the deviation of light at different image heights on the imaging plane after passing through the lens. According to... Figures 8A to 8D It can be seen that the optical imaging lens given in Example 4 can achieve good imaging quality.

[0153] Example 5

[0154] 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.

[0155] like Figure 9 As shown, the optical imaging lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and an imaging plane S15.

[0156] The first lens E1 has negative 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 positive optical power, with its object-side surface S7 being convex 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 convex 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. Light from the object passes sequentially through surfaces S1 to S14 and is finally imaged on the imaging surface S15.

[0157] Optionally, an aperture stop (not shown) may be provided between the third lens E3 and the fourth lens E4 to improve the image quality of the lens.

[0158] Table 13 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 5, wherein the units of radius of curvature and thickness are millimeters (mm).

[0159]

[0160]

[0161] Table 13

[0162] As shown in Table 13, in Embodiment 5, the object-side surface and image-side surface of any one of the lenses from the first lens E1 to the seventh lens E7 are aspherical. Table 14 shows the higher-order coefficients that can be used for each aspherical mirror surface in Embodiment 5, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0163] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 1.8036E-03 -5.7300E-04 3.4000E-05 1.1200E-05 -2.6000E-06 2.6700E-07 -1.5000E-08 4.7500E-10 -6.4000E-12 S2 -2.4582E-02 -2.2918E-02 1.0535E-01 -1.9410E-01 2.0883E-01 -1.3757E-01 5.4942E-02 -1.2260E-02 1.1830E-03 S3 6.0986E-02 -4.9779E-01 2.1328E+00 -5.9828E+00 1.0422E+01 -1.1454E+01 7.7344E+00 -2.9269E+00 4.7508E-01 S4 3.2160E-02 -6.4926E-02 -2.6978E-01 9.5226E-01 -2.5075E+00 4.2570E+00 -4.1017E+00 2.0651E+00 -4.2097E-01 S5 1.2551E-02 8.7477E-02 -1.7392E+00 8.2555E+00 -2.3577E+01 4.1551E+01 -4.3868E+01 2.5316E+01 -6.1371E+00 S6 -1.3508E-02 1.1294E-01 -4.0568E-01 8.9192E-01 8.8039E-01 -1.0832E+01 2.6863E+01 -2.9698E+01 1.2621E+01 S7 9.0710E-03 9.4223E-02 -4.5027E-01 1.3592E+00 -2.5098E+00 2.2432E+00 -2.2223E-01 -1.0831E+00 6.0138E-01 S8 -4.1282E-02 -2.5895E-01 3.0436E+00 -1.7147E+01 5.9371E+01 -1.2710E+02 1.6337E+02 -1.1495E+02 3.3855E+01 S9 -3.1274E-01 -4.9257E-01 3.1661E+00 -1.2403E+01 3.8472E+01 -7.9531E+01 9.8985E+01 -6.7369E+01 1.9420E+01 S10 1.4741E-01 -2.5341E+00 1.0875E+01 -2.8527E+01 5.1748E+01 -6.3729E+01 5.0356E+01 -2.2903E+01 4.5366E+00 S11 3.9288E-01 -2.2978E+00 8.1901E+00 -1.8772E+01 2.8422E+01 -2.8351E+01 1.7930E+01 -6.5165E+00 1.0364E+00 S12 -1.3044E-01 2.0703E-01 -6.4464E-01 1.4913E+00 -2.3176E+00 2.2611E+00 -1.3037E+00 4.0297E-01 -5.1340E-02 S13 -3.0974E-01 2.3228E-01 -8.0791E-01 2.2816E+00 -4.0940E+00 4.6792E+00 -3.2748E+00 1.2781E+00 -2.1229E-01 S14 -4.7662E-02 2.0901E-03 1.3822E-02 -1.2750E-02 6.1280E-03 -1.7700E-03 3.0600E-04 -2.9000E-05 1.1100E-06

[0164] Table 14

[0165] 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 distance TTL between the object surface S1 and the imaging surface S15 of the first lens E1 on the optical axis, and the maximum half field of view HFOV.

[0166]

[0167]

[0168] Table 15

[0169] Figure 10A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 5 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 10B The astigmatism curve of the optical imaging lens of Embodiment 5 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 10C The distortion curve of the optical imaging lens of Example 5 is shown, which represents the distortion magnitude under different field of view conditions. Figure 10D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 5 is shown, which represents the deviation of light at different image heights on the imaging plane after passing through the lens. According to... Figures 10A to 10D It can be seen that the optical imaging lens given in Example 5 can achieve good imaging quality.

[0170] Example 6

[0171] 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.

[0172] like Figure 11 As shown, the optical imaging lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and an imaging plane S15.

[0173] The first lens E1 has negative optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has positive optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex 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. Light from the object passes sequentially through surfaces S1 to S14 and is finally imaged on the imaging surface S15.

[0174] Optionally, an aperture stop (not shown) may be provided between the third lens E3 and the fourth lens E4 to improve the image quality of the lens.

[0175] Table 16 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 6, wherein the units of radius of curvature and thickness are millimeters (mm).

[0176]

[0177] Table 16

[0178] As shown in Table 16, in Example 6, the object-side surface and image-side surface of any one of the lenses from the first lens E1 to the seventh lens E7 are aspherical. Table 17 shows the higher-order coefficients that can be used for each aspherical mirror in Example 6, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0179] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 2.7850E-03 -8.8000E-04 6.6400E-05 2.0800E-05 -6.6000E-06 8.7300E-07 -6.3000E-08 2.4300E-09 -4.0000E-11 S2 -1.9280E-02 -1.9370E-02 1.1551E-01 -2.4966E-01 2.9501E-01 -2.0452E-01 8.3329E-02 -1.8530E-02 1.7500E-03 S3 2.2800E-02 -7.5990E-02 1.0792E-01 -3.1177E-01 5.1276E-01 -5.3722E-01 3.6923E-01 -1.4748E-01 2.5302E-02 S4 5.1628E-02 -2.2943E-01 5.5504E-01 -1.9774E+00 4.3400E+00 -5.6424E+00 4.4403E+00 -1.9720E+00 3.7947E-01 S5 -2.6330E-02 -9.4580E-02 2.4488E-01 -5.9725E-01 2.6555E-01 2.0971E+00 -4.4759E+00 3.5044E+00 -9.8615E-01 S6 -2.3900E-03 -8.2820E-02 1.0275E+00 -5.1996E+00 1.5655E+01 -3.0243E+01 3.6946E+01 -2.6307E+01 8.3139E+00 S7 -1.0830E-02 3.4720E-02 -2.6017E-01 2.9131E+00 -1.5573E+01 4.4057E+01 -6.9414E+01 5.7506E+01 -1.9395E+01 S8 -1.9994E-01 3.2719E-01 -1.2785E+00 8.2214E+00 -3.2459E+01 7.7214E+01 -1.0528E+02 7.3150E+01 -1.8126E+01 S9 1.2528E-01 -2.3624E+00 4.3364E+00 1.0812E+01 -9.8590E+01 3.0958E+02 -5.2008E+02 4.5704E+02 -1.6376E+02 S10 1.8756E-01 -2.4988E+00 9.8351E+00 -2.4602E+01 4.2637E+01 -4.8038E+01 3.0216E+01 -6.6921E+00 -1.1049E+00 S11 3.4548E-01 -1.9687E+00 7.5957E+00 -1.7993E+01 2.6612E+01 -2.4738E+01 1.3930E+01 -4.2708E+00 5.2875E-01 S12 -2.0865E-01 3.9843E-01 -1.1518E+00 2.6859E+00 -4.2841E+00 4.2777E+00 -2.5070E+00 7.8331E-01 -1.0049E-01 S13 -3.4200E-01 2.4983E-01 -4.1933E-01 4.0597E-01 4.3858E-02 -6.8032E-01 8.3588E-01 -4.1505E-01 7.2618E-02 S14 -8.3900E-02 3.9773E-02 -1.8270E-02 4.7480E-03 2.6200E-04 -7.5000E-04 2.7400E-04 -4.6000E-05 3.0700E-06

[0180] Table 17

[0181] Table 18 gives the effective focal lengths f1 to f7 of each lens in Example 6, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the object surface S1 to the imaging surface S15 of the first lens E1, and the maximum half field of view HFOV.

[0182] f1(mm) -2.73 f6 (mm) 2.23 f2 (mm) 24.58 f7 (mm) -2.02 f3 (mm) 71.93 f(mm) 1.34 f4 (mm) 2.92 TTL(mm) 7.45 f5 (mm) 12.33 HFOV (°) 78.0

[0183] Table 18

[0184] Figure 12A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 6 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 12B The astigmatism curve of the optical imaging lens of Embodiment 6 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 12C The distortion curve of the optical imaging lens of Example 6 is shown, which represents the distortion magnitude under different field of view conditions. Figure 12D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 6 is shown, which represents the deviation of light at different image heights on the imaging plane after passing through the lens. According to Figures 12A to 12D It can be seen that the optical imaging lens given in Example 6 can achieve good imaging quality.

[0185] Example 7

[0186] The following is for reference Figures 13 to 14D An optical imaging lens according to Embodiment 7 of this application is described. Figure 13 A schematic diagram of the structure of an optical imaging lens according to Embodiment 7 of this application is shown.

[0187] like Figure 13 As shown, the optical imaging lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and an imaging plane S15.

[0188] The first lens E1 has negative optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has positive optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has negative optical power, with its object-side surface S11 being 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. Light from the object passes sequentially through surfaces S1 to S14 and is finally imaged on the imaging surface S15.

[0189] Optionally, an aperture stop (not shown) may be provided between the third lens E3 and the fourth lens E4 to improve the image quality of the lens.

[0190] Table 19 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens in the optical imaging lens of Example 7, wherein the units for radius of curvature and thickness are millimeters (mm).

[0191]

[0192] Table 19

[0193] As shown in Table 19, in Example 7, the object-side surface and image-side surface of any one of the lenses from the first lens E1 to the seventh lens E7 are aspherical. Table 20 shows the higher-order coefficients that can be used for each aspherical mirror surface in Example 7, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0194]

[0195]

[0196] Table 20

[0197] Table 21 gives the effective focal lengths f1 to f7 of each lens in Example 7, the total effective focal length f of the optical imaging lens, the distance TTL between the object surface S1 and the imaging surface S15 of the first lens E1 on the optical axis, and the maximum half field of view HFOV.

[0198] f1(mm) -3.15 f6 (mm) -24.07 f2 (mm) 37.55 f7 (mm) -5.66 f3 (mm) 139.17 f(mm) 1.53 f4 (mm) 2.18 TTL(mm) 7.92 f5 (mm) 8.37 HFOV (°) 82.5

[0199] Table 21

[0200] Figure 14A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 7 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 14B The astigmatism curve of the optical imaging lens of Embodiment 7 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 14C The distortion curve of the optical imaging lens of Example 7 is shown, which represents the distortion magnitude under different field of view conditions. Figure 14D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 7 is shown, which represents the deviation of light at different image heights on the imaging plane after passing through the lens. According to Figures 14A to 14D It can be seen that the optical imaging lens given in Example 7 can achieve good imaging quality.

[0201] Example 8

[0202] The following is for reference Figures 15 to 16D An optical imaging lens according to Embodiment 8 of this application is described. Figure 15 A schematic diagram of the structure of an optical imaging lens according to Embodiment 8 of this application is shown.

[0203] like Figure 15 As shown, the optical imaging lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and an imaging plane S15.

[0204] The first lens E1 has negative optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has positive optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has negative optical power, with its object-side surface S11 being concave and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being concave and its image-side surface S14 being concave. Light from the object passes sequentially through surfaces S1 to S14 and is finally imaged on the imaging surface S15.

[0205] Optionally, an aperture stop (not shown) may be provided between the third lens E3 and the fourth lens E4 to improve the image quality of the lens.

[0206] Table 22 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 8, wherein the units of radius of curvature and thickness are millimeters (mm).

[0207]

[0208] Table 22

[0209] As shown in Table 22, in Embodiment 8, the object-side surface and image-side surface of any one of the lenses from the first lens E1 to the seventh lens E7 are aspherical. Table 23 shows the higher-order coefficients that can be used for each aspherical mirror surface in Embodiment 8, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0210] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 1.7083E-03 7.5100E-04 -9.0000E-04 3.1300E-04 -6.0000E-05 7.0600E-06 -5.1000E-07 2.0300E-08 -3.5000E-10 S2 2.9549E-02 -2.1529E-01 5.5348E-01 -8.2521E-01 7.6953E-01 -4.5266E-01 1.6309E-01 -3.2840E-02 2.8340E-03 S3 1.9497E-02 -5.7620E-02 -2.2020E-02 1.8263E-01 -5.2655E-01 7.4044E-01 -5.5889E-01 2.2345E-01 -3.7500E-02 S4 6.0513E-02 -3.2968E-01 1.1149E+00 -3.4592E+00 6.6269E+00 -7.7646E+00 5.5338E+00 -2.2087E+00 3.7776E-01 S5 -3.3314E-02 7.4802E-02 -1.0062E+00 4.3992E+00 -1.1920E+01 2.0774E+01 -2.2381E+01 1.3482E+01 -3.5109E+00 S6 3.6705E-02 -6.9220E-02 3.6284E-01 -1.8814E+00 6.3218E+00 -1.2956E+01 1.6047E+01 -1.1359E+01 3.4778E+00 S7 9.8757E-03 2.2867E-01 -2.0977E+00 9.7045E+00 -2.7409E+01 4.8319E+01 -5.1810E+01 3.0922E+01 -7.8805E+00 S8 -5.7626E-02 -4.6265E-01 4.7647E+00 -2.2972E+01 6.8116E+01 -1.2496E+02 1.3780E+02 -8.3284E+01 2.1078E+01 S9 -1.1453E-01 -4.1878E-01 -3.8684E+00 3.0202E+01 -9.9828E+01 1.9720E+02 -2.3661E+02 1.5775E+02 -4.4597E+01 S10 4.3778E-01 -1.7885E+00 -3.0019E+00 2.9196E+01 -7.6800E+01 1.1030E+02 -9.3328E+01 4.3667E+01 -8.7064E+00 S11 7.0628E-01 -5.3290E-01 -1.1851E+01 6.2579E+01 -1.6084E+02 2.4889E+02 -2.3823E+02 1.3136E+02 -3.2248E+01 S12 -9.4990E-01 1.4064E+00 -1.6935E+00 1.5283E+00 -8.7766E-01 1.2351E-01 1.9240E-01 -1.1668E-01 1.8812E-02 S13 -8.7664E-01 6.4856E-01 3.8527E-01 -2.1645E+00 3.7958E+00 -3.9225E+00 2.4704E+00 -8.6799E-01 1.2963E-01 S14 -7.0714E-03 -6.0620E-02 8.7286E-02 -6.7700E-02 3.2428E-02 -9.8900E-03 1.8700E-03 -2.0000E-04 9.3300E-06

[0211] Table 23

[0212] Table 24 gives the effective focal lengths f1 to f7 of each lens in Example 8, the total effective focal length f of the optical imaging lens, the distance TTL between the object surface S1 and the imaging surface S15 of the first lens E1 on the optical axis, and the maximum half field of view HFOV.

[0213] f1(mm) -3.00 f6 (mm) -20.25 f2 (mm) 33.68 f7 (mm) -6.18 f3 (mm) 143.95 f(mm) 1.49 f4 (mm) 2.19 TTL(mm) 7.95 f5 (mm) 8.95 HFOV (°) 77.5

[0214] Table 24

[0215] Figure 16A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 8 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 16B The astigmatism curve of the optical imaging lens of Embodiment 8 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 16C The distortion curve of the optical imaging lens of Example 8 is shown, which represents the distortion magnitude under different field of view conditions. Figure 16D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 8 is shown, which represents the deviation of light at different image heights on the imaging plane after passing through the lens. According to Figures 16A to 16D It can be seen that the optical imaging lens given in Example 8 can achieve good imaging quality.

[0216] Example 9

[0217] The following is for reference Figures 17 to 18D An optical imaging lens according to Embodiment 9 of this application is described. Figure 17 A schematic diagram of the structure of an optical imaging lens according to Embodiment 9 of this application is shown.

[0218] like Figure 17 As shown, the optical imaging lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and an imaging plane S15.

[0219] The first lens E1 has negative 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 positive optical power, with its object-side surface S7 being convex 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 convex 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. Light from the object passes sequentially through surfaces S1 to S14 and is finally imaged on the imaging surface S15.

[0220] Optionally, an aperture stop (not shown) may be provided between the third lens E3 and the fourth lens E4 to improve the image quality of the lens.

[0221] Table 25 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 9, wherein the units of radius of curvature and thickness are millimeters (mm).

[0222]

[0223]

[0224] Table 25

[0225] As shown in Table 25, in Embodiment 9, the object-side surface and image-side surface of any one of the lenses from the first lens E1 to the seventh lens E7 are aspherical. Table 26 shows the higher-order coefficients that can be used for each aspherical mirror surface in Embodiment 9, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0226] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 3.7129E-03 -2.2400E-03 7.5800E-04 -1.7000E-04 2.7700E-05 -2.9000E-06 1.8200E-07 -6.5000E-09 9.7900E-11 S2 5.3639E-02 -2.5949E-01 6.2965E-01 -9.1136E-01 8.2728E-01 -4.7336E-01 1.6633E-01 -3.2850E-02 2.8040E-03 S3 2.5635E-02 -6.4250E-02 5.8672E-02 -1.7449E-01 2.5176E-01 -2.0821E-01 1.0631E-01 -3.0310E-02 3.5880E-03 S4 5.3707E-02 -2.5816E-01 7.1843E-01 -2.5197E+00 5.1991E+00 -6.2776E+00 4.5132E+00 -1.7997E+00 3.0673E-01 S5 -2.6949E-02 3.0459E-01 -3.7314E+00 1.8968E+01 -5.7347E+01 1.0708E+02 -1.2060E+02 7.4768E+01 -1.9524E+01 S6 6.7291E-02 -1.1418E+00 1.0621E+01 -5.8035E+01 2.0037E+02 -4.3903E+02 5.9064E+02 -4.4564E+02 1.4450E+02 S7 -1.7931E-02 4.7736E-01 -4.4685E+00 2.5331E+01 -8.8380E+01 1.9045E+02 -2.4666E+02 1.7548E+02 -5.2552E+01 S8 -6.3702E-02 -5.8986E-01 7.7603E+00 -4.6967E+01 1.7225E+02 -3.9042E+02 5.3299E+02 -4.0083E+02 1.2723E+02 S9 8.7236E-02 -2.2782E+00 7.4007E+00 -1.2531E+01 2.0552E-01 4.9094E+01 -1.0375E+02 9.3084E+01 -3.1737E+01 S10 1.0895E-01 -1.5934E+00 5.6762E+00 -1.4309E+01 2.9123E+01 -4.3494E+01 4.2330E+01 -2.3445E+01 5.5672E+00 S11 2.2747E-01 -8.9852E-01 1.9413E+00 -1.6285E+00 -1.4021E+00 4.6061E+00 -4.5159E+00 2.0869E+00 -3.8514E-01 S12 -5.2546E-02 -1.5721E-01 6.5082E-01 -1.4134E+00 2.0044E+00 -1.9627E+00 1.2054E+00 -4.0253E-01 5.5092E-02 S13 -3.1975E-01 3.4890E-01 -2.5106E+00 8.8878E+00 -1.7421E+01 2.0415E+01 -1.4378E+01 5.6564E+00 -9.5630E-01 S14 2.9333E-02 -2.1008E-01 2.5502E-01 -1.8088E-01 8.2984E-02 -2.4940E-02 4.7320E-03 -5.1000E-04 2.4400E-05

[0227] Table 26

[0228] Table 27 gives the effective focal lengths f1 to f7 of each lens in Example 9, the total effective focal length f of the optical imaging lens, the distance TTL between the object surface S1 and the imaging surface S15 of the first lens E1 on the optical axis, and the maximum half field of view HFOV.

[0229]

[0230]

[0231] Table 27

[0232] Figure 18A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 9 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 18B The astigmatism curve of the optical imaging lens of Embodiment 9 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 18C The distortion curve of the optical imaging lens of Example 9 is shown, which represents the distortion magnitude under different field of view conditions. Figure 18D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 9 is shown, which represents the deviation of light at different image heights on the imaging plane after passing through the lens. According to... Figures 18A to 18D It can be seen that the optical imaging lens given in Example 9 can achieve good imaging quality.

[0233] Example 10

[0234] The following is for reference Figures 19 to 20D An optical imaging lens according to Embodiment 10 of this application is described. Figure 19 A schematic diagram of the structure of an optical imaging lens according to Embodiment 10 of this application is shown.

[0235] like Figure 19 As shown, the optical imaging lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and an imaging plane S15.

[0236] The first lens E1 has negative 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 positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has positive optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex 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. Light from the object passes sequentially through surfaces S1 to S14 and is finally imaged on the imaging surface S15.

[0237] Optionally, an aperture stop (not shown) may be provided between the third lens E3 and the fourth lens E4 to improve the image quality of the lens.

[0238] Table 28 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 10, wherein the units of radius of curvature and thickness are millimeters (mm).

[0239]

[0240] Table 28

[0241] As shown in Table 28, in Example 10, the object-side surface and image-side surface of any one of the lenses from the first lens E1 to the seventh lens E7 are aspherical. Table 29 shows the higher-order coefficients that can be used for each aspherical mirror in Example 10, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0242]

[0243]

[0244] Table 29

[0245] Table 30 gives the effective focal lengths f1 to f7 of each lens in Example 10, the total effective focal length f of the optical imaging lens, the distance TTL between the object surface S1 and the imaging surface S15 of the first lens E1 on the optical axis, and the maximum half field of view HFOV.

[0246] f1(mm) -3.92 f6 (mm) 1.88 f2 (mm) -19.25 f7 (mm) -1.36 f3 (mm) 15.00 f(mm) 1.20 f4 (mm) 2.18 TTL(mm) 6.68 f5 (mm) 362.90 HFOV (°) 77.5

[0247] Table 30

[0248] Figure 20A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 10 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 20B The astigmatism curve of the optical imaging lens of Embodiment 10 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 20C The distortion curve of the optical imaging lens of Example 10 is shown, which represents the distortion magnitude under different field of view conditions. Figure 20D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 10 is shown, which represents the deviation of light at different image heights on the imaging plane after passing through the lens. According to Figures 20A to 20D It can be seen that the optical imaging lens given in Example 10 can achieve good imaging quality.

[0249] In summary, Examples 1 to 10 satisfy the relationships shown in Table 31.

[0250]

[0251]

[0252] Table 31

[0253] This application also provides an imaging device, wherein the electronic photosensitive element can be a photocoupled device (CCD) or a complementary metal oxide semiconductor device (CMOS). The imaging device can be a stand-alone imaging device such as a digital camera, or an imaging module integrated into a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens described above.

[0254] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. An optical imaging lens, comprising, in sequence along the optical axis from the object side to the image side: The first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens, It is characterized in that, The first lens has negative refractive power, the object side surface is convex, and the image side surface is concave. The second lens has refractive power, the object side surface is convex, and the image side surface is concave. The third lens has positive refractive power. The fourth lens has positive refractive power, and the object side surface is convex. The fifth lens has refractive power. The sixth lens has refractive power. The seventh lens has negative refractive power, and both the object side surface and the image side surface are concave. The sixth lens has positive refractive power; or The sixth lens has negative refractive power, the second lens and the fifth lens both have positive refractive power; the number of lenses with refractive power in the optical imaging lens is seven; and The maximum effective half aperture of the image side surface of the seventh lens DT72 and the maximum effective half aperture of the object side surface of the seventh lens DT71 satisfy 1.63≤DT72 / DT71≤1.

84. The interval distance T12 of the first lens and the second lens on the optical axis and half of the diagonal line length of the effective pixel area on the imaging surface of the optical imaging lens ImgH satisfy 0.97≤T12 / ImgH≤1.

14. 2.The optical imaging lens according to claim 1, wherein, The curvature radius R1 of the object side surface of the first lens and the curvature radius R2 of the image side surface of the first lens satisfy 2.18≤R1 / R2≤2.

68. 3.The optical imaging lens according to claim 1, wherein, The curvature radius R3 of the object side surface of the second lens and the curvature radius R4 of the image side surface of the second lens satisfy 0.57≤R3 / R4≤1.

41.

4. The optical imaging lens according to claim 3, characterized in that, The total effective focal length f of the optical imaging lens, the effective focal length f2 of the second lens and the effective focal length f5 of the fifth lens satisfy 0.05≤|f / f2|+|f / f5|≤0.

54.

5. The optical imaging lens according to claim 1, characterized in that, The curvature radius R7 of the object side surface of the fourth lens and the total effective focal length f of the optical imaging lens satisfy 1.14≤R7 / f≤1.

66. 6.The optical imaging lens according to claim 5, wherein, The effective focal length f4 of the fourth lens and the effective focal length f3 of the third lens satisfy 0 7.The optical imaging lens according to claim 1, wherein, The curvature radius R14 of the image side surface of the seventh lens and the curvature radius R13 of the object side surface of the seventh lens satisfy -2.1 8.The optical imaging lens according to claim 7, wherein, The center thickness CT7 of the seventh lens on the optical axis and the effective focal length f7 of the seventh lens satisfy -0.67≤CT7 / f7≤-0.

20. 9.The optical imaging lens according to claim 1, wherein, The maximum effective half aperture of the object side surface of the first lens DT11 and the maximum effective half aperture of the image side surface of the first lens DT12 satisfy 1.92≤DT11 / DT12≤2.

21.

10. The optical imaging lens according to claim 9, characterized in that, The effective focal length f1 of the first lens and the total effective focal length f of the optical imaging lens satisfy -3.27≤f1 / f 11. The optical imaging lens according to claim 1, characterized in that, A central thickness CT6 of the sixth lens on the optical axis satisfies 0.96≤CT6 / TTL 10≤1.

58.

12. The optical imaging lens according to any one of claims 1-11, wherein, The maximum half field of view HFOV of the optical imaging lens satisfies 72.5°≤HFOV≤91.0°.

13. The optical imaging lens according to any one of claims 1-11, wherein, The total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy 1.78≤f / EPD≤1.86.

Images