Optical imaging lens

Abstract

The application discloses an optical imaging lens, which comprises, in sequence 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, a seventh lens and an eighth lens; wherein the first lens has negative refractive power, and the object side surface thereof is a concave surface; the second lens has positive refractive power, and the object side surface thereof is a convex surface, and the image side surface thereof is a concave surface; the third lens has negative refractive power; the fourth lens has positive refractive power; the seventh lens has positive refractive power; the eighth lens has negative refractive power; the radius of curvature R15 of the object side surface of the eighth lens, the radius of curvature R16 of the image side surface of the eighth lens, the distance T78 between the image side surface of the seventh lens and the object side surface of the eighth lens on the optical axis, the central thickness CT7 of the seventh lens on the optical axis and the central thickness CT8 of the eighth lens on the optical axis satisfy the following conditions: 14.7<(|R15|+|R16|) / (T78+CT8)<167.8 and 2.7<(CT7+CT8) / (CT7‑CT8)<3.3.

Description

Technical Field

[0001] This application relates to the field of optical components, and more specifically, to an optical imaging lens. Background Technology

[0002] In recent years, with the development of science and technology, people's requirements for mobile phone lenses have become increasingly higher, and high-quality mobile phone lenses are gaining popularity. At the same time, the trend towards miniaturization in portable electronic products places increasingly stringent requirements on the overall length of camera lenses, leading to reduced design freedom and increased design difficulty. To meet the miniaturization requirements, mobile phone imaging lenses are generally configured with an F-number of 2.0 or higher. Lenses with an F-number below 2.0 sometimes fail to meet system requirements, resulting in deterioration in various performance indicators, such as increased aberrations. Therefore, obtaining an optical imaging lens with a large aperture, large image plane, high image quality, and low aberrations under current conditions has become a difficult bottleneck to overcome. Summary of the Invention

[0003] 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, a seventh lens, and an eighth lens; wherein the first lens has negative optical power and its object side is concave; the second lens has positive optical power and its object side is convex and its image side is concave; the third lens has negative optical power; the fourth lens has positive optical power; the seventh lens has positive optical power; and the eighth lens has... Negative optical power; the radius of curvature R15 of the object side of the eighth lens, the radius of curvature R16 of the image side of the eighth lens, the distance T78 between the image side of the seventh lens and the object side of the eighth lens on the optical axis, the center thickness CT7 of the seventh lens on the optical axis and the center thickness CT8 of the eighth lens on the optical axis satisfy: 14.7<(|R15|+|R16|) / (T78+CT8)<167.8 and 2.7<(CT7+CT8) / (CT7-CT8)<3.3.

[0004] In one embodiment, the effective focal length f7 of the seventh lens, the effective focal length f8 of the eighth lens, the radius of curvature R10 of the image-side surface of the fifth lens, and the radius of curvature R11 of the object-side surface of the sixth lens satisfy: -0.64 <f7×f8 / (R10×R11)<0.48。

[0005] In one embodiment, the dispersion coefficient V7 of the seventh lens and the dispersion coefficient V8 of the eighth lens satisfy: 3.4 < (V7 + V8) / (V7 - V8) < 4.6.

[0006] In one embodiment, the effective focal length f6 of the sixth lens and the effective focal length f5 of the fifth lens satisfy: -1.1 < (|f6| + |f5|) / (|f6| - |f5|) < 9.1.

[0007] In one embodiment, the effective focal length f8 of the eighth lens and the effective focal length f6 of the sixth lens satisfy: -1.26<(|f8|+|f6|) / (|f8|-|f6|)<-1.

[0008] In one embodiment, the center thickness CT3 of the third lens on the optical axis, the center thickness CT4 of the fourth lens on the optical axis, the distance T34 from the image side of the third lens to the object side of the fourth lens on the optical axis, and the distance T45 from the image side of the fourth lens to the object side of the fifth lens on the optical axis satisfy: 11.4 < (CT3 + CT4) / (T34 + T45) < 17.9.

[0009] In one embodiment, the center thickness CT5 of the fifth lens on the optical axis, the center thickness CT6 of the sixth lens on the optical axis, the distance T56 from the image-side surface of the fifth lens to the object-side surface of the sixth lens on the optical axis, and the distance T67 from the image-side surface of the sixth lens to the object-side surface of the seventh lens on the optical axis satisfy: 1.7 <CT5×CT6 / (T56×T67)<2.0。

[0010] In one embodiment, the entrance pupil diameter EPD of the optical imaging lens, the effective focal length f of the optical imaging lens, the center thickness CT6 of the sixth lens on the optical axis, and the distance T67 from the image side of the sixth lens to the object side of the seventh lens on the optical axis satisfy: 47.2 < (EPD / CT6) × (f / T67) < 100.3.

[0011] In one embodiment, the effective focal length f6 of the sixth lens, the radius of curvature R12 of the image side surface of the sixth lens, the center thickness CT5 of the fifth lens on the optical axis, the center thickness CT6 of the sixth lens on the optical axis, and the distance T56 from the image side surface of the fifth lens to the object side surface of the sixth lens on the optical axis satisfy: |f6×T56 / ((CT5+CT6)×R12)|<170.

[0012] In one embodiment, the effective focal length f of the optical imaging lens, the maximum half field of view (HFOV) of the optical imaging lens, the effective focal length f7 of the seventh lens, and the effective focal length f8 of the eighth lens satisfy: 1.3 <f×tan(HFOV) / (f7+f8)<2.4。

[0013] In one embodiment, the second lens, the fourth lens, and the sixth lens have the same refractive index and dispersion coefficient.

[0014] In one embodiment, the object-side surface of the third lens is convex, and the image-side surface is concave.

[0015] In one embodiment, the fourth lens has positive optical power, with its object-side surface being convex and its image-side surface being convex.

[0016] In one embodiment, the seventh lens has positive optical power, and both its object-side and image-side surfaces are convex.

[0017] In one embodiment, the fifth lens is made of glass.

[0018] This application proposes an eight-element optical imaging lens. By rationally combining the optical power and surface shape of some lenses, it simultaneously satisfies: 14.7 < (|R15| + |R16|) / (T78 + CT8) < 167.8 and 2.7 < (CT7 + CT8) / (CT7 - CT8) < 3.3. By controlling the curvature radius and thickness of the seventh and eighth lenses, it is beneficial to shorten the total focal length of the optical imaging lens, realize the design requirements of ultra-wide angle and large image plane, and also help to ensure that the rear lens has sufficient field curvature correction capability and manufacturability, thereby improving image quality while meeting the miniaturization characteristics. Attached Figure Description

[0019] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0020] Figure 1 A schematic diagram of the structure of an optical imaging lens according to Embodiment 1 of this application is shown;

[0021] Figures 2A to 2C The on-axis chromatic aberration curve, astigmatism curve, and distortion curve of the optical imaging lens of Example 1 are shown respectively.

[0022] Figure 3 A schematic diagram of the structure of an optical imaging lens according to Embodiment 2 of this application is shown;

[0023] Figures 4A to 4C The on-axis chromatic aberration curve, astigmatism curve, and distortion curve of the optical imaging lens of Example 2 are shown respectively.

[0024] Figure 5 A schematic diagram of the structure of an optical imaging lens according to Embodiment 3 of this application is shown;

[0025] Figures 6A to 6C The on-axis chromatic aberration curve, astigmatism curve, and distortion curve of the optical imaging lens of Example 3 are shown respectively.

[0026] Figure 7 A schematic diagram of the structure of an optical imaging lens according to Embodiment 4 of this application is shown;

[0027] Figures 8A to 8C The on-axis chromatic aberration curve, astigmatism curve, and distortion curve of the optical imaging lens of Example 4 are shown respectively.

[0028] Figure 9 A schematic diagram of the structure of an optical imaging lens according to Embodiment 5 of this application is shown;

[0029] Figures 10A to 10C The on-axis chromatic aberration curve, astigmatism curve, and distortion curve of the optical imaging lens of Example 5 are shown respectively.

[0030] Figure 11 A schematic diagram of the structure of an optical imaging lens according to Embodiment 6 of this application is shown;

[0031] Figures 12A to 12C The on-axis chromatic aberration curve, astigmatism curve, and distortion curve of the optical imaging lens of Example 6 are shown respectively.

[0032] Figure 13 A schematic diagram of the structure of an optical imaging lens according to Embodiment 7 of this application is shown;

[0033] Figures 14A to 14C The on-axis chromatic aberration curve, astigmatism curve, and distortion curve of the optical imaging lens of Example 7 are shown respectively.

[0034] Figure 15 A schematic diagram of the structure of an optical imaging lens according to Embodiment 8 of this application is shown;

[0035] Figures 16A to 16C The on-axis chromatic aberration curve, astigmatism curve, and distortion curve of the optical imaging lens of Example 8 are shown respectively.

[0036] Figure 17 A schematic diagram of the structure of an optical imaging lens according to Embodiment 9 of this application is shown;

[0037] Figures 18A to 18C The on-axis chromatic aberration curve, astigmatism curve, and distortion curve of the optical imaging lens of Example 9 are shown respectively. Detailed Implementation

[0038] 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.

[0039] 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.

[0040] 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.

[0041] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the location of the convexity is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the location of the concaveness is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the subject is called the object-side surface of the lens, and the surface of each lens closest to the imaging plane is called the image-side surface of the lens.

[0042] 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.

[0043] 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 formalized sense, unless expressly so specified herein.

[0044] 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.

[0045] The features, principles and other aspects of this application are described in detail below.

[0046] An optical imaging lens according to an exemplary embodiment of this application may include eight lenses with optical power, namely a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens. These eight lenses are arranged sequentially along the optical axis from the object side to the image side. Any two adjacent lenses from the first lens to the eighth lens may have a gap. The reasonable combination of the optical power of each lens in this application is beneficial for shortening the total focal length of the optical imaging lens, improving image quality, and simultaneously meeting miniaturization requirements.

[0047] In an exemplary embodiment, the first lens has negative optical power and its object side is concave.

[0048] In an exemplary embodiment, the second lens has positive optical power, with its object side being convex and its image side being concave.

[0049] In an exemplary embodiment, the third lens has negative optical power, the fourth lens has positive optical power, the seventh lens has positive optical power, and the eighth lens has negative optical power.

[0050] In an exemplary embodiment, the optical imaging lens further includes an aperture stop disposed on the image side of the first lens. The aperture stop helps to block light, reduce stray light after the light passes through the first lens, and control the light from subsequent lenses to have good imaging quality.

[0051] In an exemplary embodiment, the optical imaging lens according to this application satisfies: 14.7 < (|R15| + |R16|) / (T78 + CT8) < 167.8 and 2.7 < (CT7 + CT8) / (CT7 - CT8) < 3.3, where R15 is the radius of curvature of the object-side surface of the eighth lens, R16 is the radius of curvature of the image-side surface of the eighth lens, T78 is the distance on the optical axis from the image-side surface of the seventh lens to the object-side surface of the eighth lens, CT7 is the center thickness of the seventh lens on the optical axis, and CT8 is the center thickness of the eighth lens on the optical axis. By satisfying 14.7 < (|R15| + |R16|) / (T78 + CT8) < 167.8 and controlling the optical power of each corresponding lens, as well as the radius of curvature and thickness of the seventh and eighth lenses, it can be ensured that the lens achieves the design requirements of ultra-wide angle and large image plane while also ensuring that the rear lens has sufficient field curvature correction capability and manufacturability.

[0052] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: -0.64 < f7×f8 / (R10×R11) < 0.48, where f7 is the effective focal length of the seventh lens, f8 is the effective focal length of the eighth lens, R10 is the radius of curvature of the image side of the fifth lens, and R11 is the radius of curvature of the object side of the sixth lens. Satisfying -0.64 < f7×f8 / (R10×R11) < 0.48 can effectively control the light beam to have better light smoothness at the positions of the seventh lens and the eighth lens, effectively reduce aberration, and correct the final imaging quality.

[0053] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 3.4 < (V7+V8) / (V7-V8) < 4.6, where V7 is the dispersion coefficient of the seventh lens and V8 is the dispersion coefficient of the eighth lens. Satisfying 3.4 < (V7+V8) / (V7-V8) < 4.6 can constrain the chromatic aberration of the seventh lens and the eighth lens, and perform chromatic aberration compensation through the difference in the dispersion coefficients of different materials, thereby reducing the influence of the seventh lens and the eighth lens on the overall chromatic aberration of the lens.

[0054] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: -1.1 < (|f6|+|f5|) / (|f6|-|f5|) < 9.1, where f6 is the effective focal length of the sixth lens and f5 is the effective focal length of the fifth lens. Satisfying -1.1 < (|f6|+|f5|) / (|f6|-|f5|) < 9.1 can reasonably utilize the fifth lens and the sixth lens to control the light entering the image plane, and further control the astigmatism of the system and improve the imaging quality of the off-axis field.

[0055] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: -1.26 < (|f8|+|f6|) / (|f8|-|f6|) < -1, where f8 is the effective focal length of the eighth lens and f6 is the effective focal length of the sixth lens. Satisfying -1.26 < (|f8|+|f6|) / (|f8|-|f6|) < -1 can reasonably utilize the sixth lens and the eighth lens to control the light entering the image plane, and further effectively control the deflection angle of the system light beam at the sixth lens and the eighth lens, increase the focal length of the system, and play a role in increasing the image height.

[0056] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 11.4 < (CT3 + CT4) / (T34 + T45) < 17.9, where CT3 is the central thickness of the third lens on the optical axis, CT4 is the central thickness of the fourth lens on the optical axis, T34 is the distance on the optical axis from the image side of the third lens to the object side of the fourth lens, and T45 is the distance on the optical axis from the image side of the fourth lens to the object side of the fifth lens. If the value of (CT3 + CT4) / (T34 + T45) is too small, the central thicknesses of the third and fourth lenses will be too small, and the stability of the lens is likely to decrease. If the value is too large, the length of the lens will be too long. Therefore, satisfying 11.4 < (CT3 + CT4) / (T34 + T45) < 17.9 is beneficial to better balance and achieve miniaturization of the module.

[0057] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 1.7 < CT5 × CT6 / (T56 × T67) < 2.0, where CT5 is the central thickness of the fifth lens on the optical axis, CT6 is the central thickness of the sixth lens on the optical axis, T56 is the distance on the optical axis from the image side of the fifth lens to the object side of the sixth lens, and T67 is the distance on the optical axis from the image side of the sixth lens to the object side of the seventh lens. If the value of CT5 × CT6 / (T56 × T67) is too small, the central thicknesses of the fifth and sixth lenses will be too small, and the stability of the lens is likely to decrease. If the value is too large, the length of the lens will be too long. Therefore, satisfying 1.7 < CT5 × CT6 / (T56 × T67) < 2.0 and controlling this conditional expression within a reasonable range is beneficial to better balance and achieve miniaturization of the module.

[0058] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 47.2 < (EPD / CT6) × (f / T67) < 100.3, where EPD is the entrance pupil diameter of the optical imaging lens, f is the effective focal length of the optical imaging lens, CT6 is the central thickness of the sixth lens on the optical axis, and T67 is the distance on the optical axis from the image side of the sixth lens to the object side of the seventh lens. If the value of (EPD / CT6) × (f / T67) is too large, the thickness of the sixth lens will be insufficient, which is likely to cause molding problems. If the value is too small, the amount of light entering will be insufficient, resulting in poor imaging quality. Therefore, satisfying 47.2 < (EPD / CT6) × (f / T67) < 100.3 and controlling this conditional expression within a reasonable range can ensure that the system has sufficient light input and good formability.

[0059] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: |f6×T56 / ((CT5 + CT6)×R12)| < 170, where f6 is the effective focal length of the sixth lens, R12 is the curvature radius of the image side of the sixth lens, CT5 is the central thickness of the fifth lens on the optical axis, CT6 is the central thickness of the sixth lens on the optical axis, and T56 is the distance on the optical axis from the image side of the fifth lens to the object side of the sixth lens. Satisfying |f6×T56 / ((CT5 + CT6)×R12)| < 170 can reasonably utilize the refraction of light by the sixth lens to control the astigmatism of the system and improve the imaging quality of the off-axis field of view.

[0060] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 1.3 < f×tan(HFOV) / (f7 + f8) < 2.4, where f is the effective focal length of the optical imaging lens, HFOV is the maximum semi-field angle of the optical imaging lens, f7 is the effective focal length of the seventh lens, and f8 is the effective focal length of the eighth lens. If the value of f×tan(HFOV) / (f7 + f8) is too large, it will cause the optical powers of the seventh lens and the eighth lens to be too large, affecting the overall focal length of the system; if it is too small, it will cause the image plane size to be insufficient, affecting imaging. Satisfying 1.3 < f×tan(HFOV) / (f7 + f8) < 2.4 and keeping this conditional expression within a certain range can reasonably distribute the focal lengths of the lenses and ensure a sufficiently large image plane.

[0061] In an exemplary embodiment, the second lens, the fourth lens, and the sixth lens have the same refractive index and dispersion coefficient. This setting can optimize chromatic aberration by using the mixture of repeated high and low refractive index materials.

[0062] In an exemplary embodiment, the object side of the third lens is convex and the image side is concave. This setting is beneficial to reducing the incident angle of paraxial light on the third lens and reducing spherical aberration.

[0063] In an exemplary embodiment, the fourth lens has a positive optical power, its object side is convex, and its image side is convex. This setting is beneficial to reducing the incident angle of paraxial light on the fourth lens and reducing spherical aberration.

[0064] In an exemplary embodiment, the seventh lens has a positive optical power, and both its object side and image side are convex. This setting is beneficial to reducing the incident angle of paraxial light on the seventh lens and converging the outgoing light.

[0065] In an exemplary embodiment, the material of the fifth lens is glass. Selecting the fifth lens to be made of glass can effectively match the Abbe number of the resin lens, playing a role in improving the chromatic aberration of the system and enhancing performance.

[0066] In an exemplary embodiment, at least one of the mirror surfaces of each of the first to eighth lenses is an aspherical mirror surface. This application does not specifically limit the number of spherical and aspherical lenses; if image resolution is a primary concern, all lenses can be aspherical. An aspherical lens is characterized by a continuously changing curvature from its center to its periphery. A spherical lens, on the other hand, has a constant curvature from its center to its periphery. Aspherical lenses have better radius of curvature characteristics, offering advantages in improving distortion and astigmatism. By using aspherical lenses, aberrations occurring during imaging can be eliminated as much as possible, thereby improving image quality. Optionally, the object-side and image-side surfaces of each of the first to eighth lenses are aspherical mirror surfaces.

[0067] In an exemplary embodiment, the effective focal length f1 of the first lens can be, for example, in the range of -12.5mm to -11.0mm; the effective focal length f2 of the second lens can be, for example, in the range of 11.5mm to 14.0mm; the effective focal length f3 of the third lens can be, for example, in the range of -25.0mm to -14.0mm; the effective focal length f4 of the fourth lens can be, for example, in the range of 5.0mm to 6.0mm; the effective focal length f5 of the fifth lens can be, for example, in the range of -44.0mm to 9998.0mm; the effective focal length f6 of the sixth lens can be, for example, in the range of -9616.0mm to 71.0mm; the effective focal length f7 of the seventh lens can be, for example, in the range of 7.0mm to 9.0mm; and the effective focal length f8 of the eighth lens can be, for example, in the range of -5.3mm to -4.5mm. The effective focal length f of the optical imaging lens can be, for example, in the range of 6.0mm to 6.5mm. The image height (ImgH) corresponding to the maximum field of view of the optical imaging lens can be, for example, in the range of 4.5 mm to 5.5 mm. The maximum field of view (FOV) of the optical imaging lens can be, for example, in the range of 70° to 85°. The entrance pupil diameter (EPD) of the optical imaging lens can be, for example, in the range of 3.0 mm to 5.0 mm.

[0068] In an exemplary embodiment, the optical imaging lens according to this application further includes a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging surface.

[0069] This application proposes an optical imaging lens with characteristics such as a large image plane, large aperture, large field of view, and high image quality. The optical imaging lens according to the above embodiments of this application can employ multiple lens elements, such as the eight elements described above. By rationally allocating the optical power, surface shape, center thickness of each lens, and on-axis spacing between lenses, incident light rays can be effectively converged, the overall optical length of the optical imaging lens can be reduced, and the manufacturability of the optical imaging lens can be improved, making the optical imaging lens more conducive to production and processing. However, those skilled in the art should understand that the number of lenses constituting the optical imaging lens can be changed without departing from the technical solutions claimed in this application to obtain the various results and advantages described in this specification. For example, although eight lenses are described as an example in the embodiments, the optical imaging lens is not limited to including eight lenses. If necessary, the optical imaging lens may also include other numbers of lenses.

[0070] 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.

[0071] Example 1

[0072] The following is for reference Figures 1 to 2C 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.

[0073] like Figure 1 As shown, the optical imaging lens includes, from the object side to the image side, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, and an imaging plane IMG.

[0074] The first lens E1 has negative optical power, with its object-side surface S1 being concave 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 negative 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 concave. The seventh lens E7 has positive optical power, with its object-side surface S13 being convex and its image-side surface S14 being convex. The eighth lens E8 has negative optical power, with its object-side surface S15 being convex and its image-side surface S16 being concave. Light from the object passes through each surface S1 to S16 in sequence and is finally imaged on the imaging surface IMG.

[0075] Table 1 shows the basic parameters of the optical imaging lens of Example 1, where the units for radius of curvature, thickness / distance, and effective focal length are all millimeters (mm).

[0076]

[0077] Table 1

[0078] In Embodiment 1, the object-side surface and image-side surface of any one of the first lens E1 to the eighth lens E8 are aspherical surfaces, and the surface shape x of each aspherical lens can be defined using, but is not limited to, the following aspherical formula:

[0079]

[0080] Where x is the distance vector from the vertex of the aspherical surface at a height h along the optical axis; c is the paraxial curvature of the aspherical surface, c = 1 / R (i.e., the paraxial curvature c is the reciprocal of the radius of curvature R in Table 1 above); k is the conic coefficient; Ai is the i-th order correction coefficient of the aspherical surface. Tables 2-1 and 2-2 give the higher-order coefficients A4, A6, A8, A16, A27, A18, A19 ... 10 A 12 A 14 A 16 A 18 A 20 A 22 A 24 A 26 A 28 and A 30 .

[0081]

[0082]

[0083] Table 2-1

[0084] Face number A18 A20 A22 A24 A26 A28 A30 S1 8.16E-06 -1.07E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S2 2.39E-05 -9.08E-06 -6.40E-09 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S3 -3.13E-05 -2.86E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S4 -1.06E-04 5.55E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S5 -3.50E-05 1.45E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S6 -9.17E-06 1.14E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S7 -4.23E-05 1.40E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S8 -3.94E-06 -1.44E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S9 5.14E-05 -7.15E-05 -7.99E-06 -1.22E-06 0.00E+00 0.00E+00 0.00E+00 S10 1.16E-04 -8.80E-05 -1.17E-05 -2.40E-06 -4.82E-07 0.00E+00 0.00E+00 S11 9.77E-05 7.84E-05 6.40E-07 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S12 -9.68E-05 1.25E-04 2.31E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S13 2.29E-04 3.80E-05 1.51E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S14 -1.14E-04 -1.07E-04 -4.12E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S15 -1.09E-03 -3.94E-04 -1.21E-04 -4.34E-05 -1.59E-05 -5.69E-06 -1.62E-06 S16 8.58E-04 -1.35E-04 -2.23E-06 -5.40E-08 0.00E+00 0.00E+00 0.00E+00

[0085] Table 2-2

[0086] Table 3 shows the values ​​of the effective focal length f of the optical imaging lens in Example 1, half the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens, the maximum field of view FOV of the optical imaging lens, and the entrance pupil diameter EPD.

[0087] parameter f(mm) ImgH(mm) FOV (°) EPD (mm) numerical values 6.31 5.17 80.00 4.74

[0088] Table 3

[0089] Figure 2AThe 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 Embodiment 1 is shown, representing the distortion magnitude values ​​corresponding to different image heights. According to... Figures 2A to 2C It can be seen that the optical imaging lens given in Example 1 can achieve good imaging quality.

[0090] Example 2

[0091] The following is for reference Figures 3 to 4C 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.

[0092] like Figure 3 As shown, the optical imaging lens includes, from the object side to the image side, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, and an imaging plane IMG.

[0093] The first lens E1 has negative optical power, with its object-side surface S1 being concave 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 negative 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 concave. The seventh lens E7 has positive optical power, with its object-side surface S13 being convex and its image-side surface S14 being convex. The eighth lens E8 has negative optical power, with its object-side surface S15 being convex and its image-side surface S16 being concave. Light from the object passes through each surface S1 to S16 in sequence and is finally imaged on the imaging surface IMG.

[0094] Table 4 shows the basic parameters of the optical imaging lens of Example 2, where the units for radius of curvature, thickness / distance, and effective focal length are millimeters (mm). Tables 5-1 and 5-2 show the higher-order coefficients that can be used for each aspherical mirror in Example 2, where each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0095]

[0096] Table 4

[0097]

[0098]

[0099] Table 5-1

[0100] Face number A18 A20 A22 A24 A26 A28 A30 S1 2.80E-05 -1.23E-05 3.04E-10 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S2 2.14E-05 -1.77E-05 -2.47E-08 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S3 -3.54E-05 1.49E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S4 -1.66E-04 5.76E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S5 -1.28E-04 6.35E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S6 -5.12E-05 2.70E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S7 -6.95E-05 2.59E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S8 1.15E-05 -2.70E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S9 7.42E-05 -1.11E-04 -1.27E-05 -1.97E-06 0.00E+00 0.00E+00 0.00E+00 S10 1.64E-04 -6.12E-05 -7.67E-06 -1.57E-06 -3.22E-07 0.00E+00 0.00E+00 S11 8.44E-05 2.24E-05 1.42E-07 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S12 1.12E-04 1.68E-04 3.15E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S13 3.47E-04 1.50E-04 5.47E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S14 -1.89E-04 -9.14E-05 -3.42E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S15 -1.37E-03 -5.34E-04 -1.47E-04 -4.90E-05 -1.70E-05 -5.80E-06 -1.59E-06 S16 6.53E-04 4.18E-06 -1.68E-07 -8.68E-09 0.00E+00 0.00E+00 0.00E+00

[0101] Table 5-2

[0102] Table 6 gives the values ​​of the effective focal length f of the optical imaging lens in Example 2, half the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens, the maximum field of view FOV of the optical imaging lens, and the entrance pupil diameter EPD.

[0103] parameter f(mm) ImgH(mm) FOV (°) EPD (mm) numerical values 6.44 5.27 80.00 3.22

[0104] Table 6

[0105] 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 Embodiment 2 is shown, representing the distortion magnitude values ​​corresponding to different image heights. According to... Figures 4A to 4C It can be seen that the optical imaging lens given in Example 2 can achieve good imaging quality.

[0106] Example 3

[0107] The following is for reference Figures 5 to 6C 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.

[0108] like Figure 5 As shown, the optical imaging lens includes, from the object side to the image side, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, and an imaging plane IMG.

[0109] The first lens E1 has negative optical power, with its object-side surface S1 being concave and its image-side surface S2 being convex. 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 negative 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 positive optical power, with its object-side surface S13 being convex and its image-side surface S14 being convex. The eighth lens E8 has negative optical power, with its object-side surface S15 being convex and its image-side surface S16 being concave. Light from the object passes through each surface S1 to S16 in sequence and is finally imaged on the imaging surface IMG.

[0110] Table 7 shows the basic parameters of the optical imaging lens of Example 3, wherein the units of radius of curvature, thickness / distance and effective focal length are millimeters (mm). Tables 8-1 and 8-2 show the higher-order coefficients that can be used for each aspherical mirror in Example 3, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0111]

[0112]

[0113] Table 7

[0114] Face number A4 A6 A8 A10 A12 A14 A16 S1 1.19E-01 6.58E-03 -7.65E-03 1.76E-03 -4.74E-04 1.58E-04 -2.65E-05 S2 8.79E-02 5.01E-02 -1.48E-02 3.20E-03 -7.87E-04 1.93E-04 -6.61E-05 S3 -4.06E-01 2.24E-02 -5.75E-03 1.24E-03 1.84E-04 -2.97E-04 -1.31E-04 S4 -3.88E-01 -7.57E-04 2.31E-02 -7.49E-03 1.98E-03 -1.40E-03 1.58E-04 S5 -4.85E-01 1.02E-01 -2.22E-02 4.89E-03 -2.53E-03 1.44E-04 1.33E-04 S6 -6.07E-01 1.14E-01 -2.73E-02 6.41E-03 -2.75E-03 5.57E-04 -4.53E-05 S7 -1.81E-01 2.53E-03 1.64E-02 -6.95E-03 1.13E-03 -6.27E-04 2.06E-04 S8 2.42E-01 -4.74E-02 7.34E-03 -2.55E-03 7.04E-04 -2.36E-04 6.81E-06 S9 -3.31E-01 8.02E-02 -1.38E-02 3.24E-03 -7.67E-04 1.76E-04 -2.00E-04 S10 -4.03E-01 1.17E-01 -1.84E-02 6.71E-03 -2.00E-03 8.31E-04 -3.90E-04 S11 2.50E-01 3.49E-02 -4.31E-04 5.25E-04 -2.10E-04 2.57E-04 3.46E-04 S12 -6.15E-01 5.26E-02 -1.91E-03 -1.07E-03 4.49E-03 -1.38E-03 1.07E-03 S13 -1.12E+00 5.04E-02 8.61E-02 -1.76E-02 5.04E-03 -3.48E-03 1.49E-03 S14 -4.66E-02 -1.86E-02 7.92E-02 -1.69E-02 4.03E-03 -2.99E-03 4.96E-06 S15 -2.22E+00 2.32E-01 -1.10E-01 1.24E-02 -5.94E-03 -2.87E-03 -9.92E-04 S16 -4.06E+00 7.64E-01 -2.38E-01 8.90E-02 -3.36E-02 1.06E-02 -3.83E-03

[0115] Table 8-1

[0116] Face number A18 A20 A22 A24 A26 A28 A30 S1 3.55E-05 -7.93E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S2 3.08E-05 -7.16E-06 -1.70E-09 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S3 -4.11E-05 -8.07E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S4 -1.80E-04 2.40E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S5 -8.29E-05 7.07E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S6 -6.60E-05 7.15E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S7 -9.19E-05 6.76E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S8 2.56E-07 -4.36E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S9 3.47E-05 -8.51E-05 -1.02E-05 -1.65E-06 0.00E+00 0.00E+00 0.00E+00 S10 1.10E-04 -9.60E-05 -1.37E-05 -2.99E-06 -6.33E-07 0.00E+00 0.00E+00 S11 9.89E-05 7.99E-05 6.29E-07 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S12 -1.60E-04 1.35E-04 2.74E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S13 2.67E-04 4.92E-05 2.06E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S14 -1.12E-04 -1.12E-04 -4.04E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S15 -1.14E-03 -4.02E-04 -1.28E-04 -4.68E-05 -1.75E-05 -6.42E-06 -1.87E-06 S16 7.99E-04 -7.33E-05 -1.50E-06 -4.31E-08 0.00E+00 0.00E+00 0.00E+00

[0117] Table 8-2

[0118] Table 9 gives the values ​​of the effective focal length f of the optical imaging lens in Example 3, half the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens, the maximum field of view FOV of the optical imaging lens, and the entrance pupil diameter EPD.

[0119] parameter f(mm) ImgH(mm) FOV (°) EPD (mm) numerical values 6.36 5.20 80.00 4.24

[0120] Table 9

[0121] 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 6CThe distortion curve of the optical imaging lens of Embodiment 3 is shown, representing the distortion magnitude corresponding to different image heights. According to... Figures 6A to 6C It can be seen that the optical imaging lens given in Example 3 can achieve good imaging quality.

[0122] Example 4

[0123] The following is for reference Figures 7 to 8C 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.

[0124] like Figure 7 As shown, the optical imaging lens includes, from the object side to the image side, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, and an imaging plane IMG.

[0125] The first lens E1 has negative optical power, with its object-side surface S1 being concave 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 negative 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 concave. The seventh lens E7 has positive optical power, with its object-side surface S13 being convex and its image-side surface S14 being convex. The eighth lens E8 has negative optical power, with its object-side surface S15 being concave and its image-side surface S16 being concave. Light from the object passes through each surface S1 to S16 in sequence and is finally imaged on the imaging surface IMG.

[0126] Table 10 shows the basic parameters of the optical imaging lens of Example 4, wherein the units of radius of curvature, thickness / distance and effective focal length are millimeters (mm). Tables 11-1 and 11-2 show 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.

[0127]

[0128]

[0129] Table 10

[0130] Face number A4 A6 A8 A10 A12 A14 A16 S1 1.21E-01 5.38E-03 -6.97E-03 1.82E-03 -4.48E-04 9.75E-05 -5.91E-05 S2 8.47E-02 5.07E-02 -1.54E-02 3.52E-03 -8.35E-04 1.89E-04 -6.03E-05 S3 -4.40E-01 2.77E-02 -7.28E-03 1.64E-03 -6.02E-06 -3.03E-04 -1.05E-04 S4 -4.20E-01 7.22E-03 1.99E-02 -5.89E-03 1.38E-03 -1.44E-03 2.55E-04 S5 -4.96E-01 1.05E-01 -2.35E-02 5.60E-03 -2.87E-03 2.38E-04 1.77E-04 S6 -6.08E-01 1.15E-01 -2.72E-02 6.24E-03 -2.86E-03 8.16E-04 -1.46E-04 S7 -1.88E-01 4.54E-03 1.53E-02 -6.44E-03 8.19E-04 -3.12E-04 1.01E-04 S8 2.61E-01 -4.95E-02 8.44E-03 -2.89E-03 7.66E-04 -2.20E-04 1.19E-05 S9 -3.40E-01 7.78E-02 -1.28E-02 2.58E-03 -6.51E-04 2.39E-04 -2.07E-04 S10 -4.32E-01 1.18E-01 -1.92E-02 6.60E-03 -2.14E-03 9.40E-04 -4.02E-04 S11 2.06E-01 4.08E-02 -5.77E-04 5.47E-04 -3.16E-04 2.65E-04 3.11E-04 S12 -6.72E-01 6.89E-02 -6.66E-03 2.11E-04 3.62E-03 -7.54E-04 8.69E-04 S13 -1.18E+00 6.76E-02 7.80E-02 -1.35E-02 2.74E-03 -2.34E-03 1.28E-03 S14 -7.60E-02 -1.16E-02 7.57E-02 -1.36E-02 1.67E-03 -2.41E-03 -1.19E-05 S15 -2.08E+00 2.06E-01 -1.09E-01 1.13E-02 -9.07E-03 -2.39E-03 -1.34E-03 S16 -3.75E+00 7.11E-01 -2.22E-01 8.27E-02 -3.18E-02 1.16E-02 -4.52E-03

[0131] Table 11-1

[0132]

[0133]

[0134] Table 11-2

[0135] Table 12 gives the values ​​of the effective focal length f of the optical imaging lens in Example 4, half the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens, the maximum field of view FOV of the optical imaging lens, and the entrance pupil diameter EPD.

[0136] parameter f(mm) ImgH(mm) FOV (°) EPD (mm) numerical values 6.32 4.51 72.00 4.75

[0137] Table 12

[0138] 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, representing the distortion magnitude corresponding to different image heights. According to... Figures 8A to 8C It can be seen that the optical imaging lens given in Example 4 can achieve good imaging quality.

[0139] Example 5

[0140] The following is for reference Figures 9 to 10C 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.

[0141] like Figure 9 As shown, the optical imaging lens includes, 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, an eighth lens E8, and an imaging plane IMG.

[0142] The first lens E1 has negative optical power, with its object-side surface S1 being concave and its image-side surface S2 being convex. 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 negative 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 positive optical power, with its object-side surface S13 being convex and its image-side surface S14 being convex. The eighth lens E8 has negative optical power, with its object-side surface S15 being convex and its image-side surface S16 being concave. Light from the object passes through each surface S1 to S16 in sequence and is finally imaged on the imaging surface IMG.

[0143] Table 13 shows the basic parameters of the optical imaging lens of Example 5, wherein the units of radius of curvature, thickness / distance and effective focal length are millimeters (mm). Tables 14-1 and 14-2 show the higher-order coefficients that can be used for each aspherical mirror in Example 5, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0144]

[0145]

[0146] Table 13

[0147] Face number A4 A6 A8 A10 A12 A14 A16 S1 1.53E-01 1.78E-04 -6.07E-03 1.69E-03 -4.18E-04 6.97E-05 -5.64E-05 S2 1.19E-01 4.35E-02 -1.44E-02 3.39E-03 -7.73E-04 1.57E-04 -4.76E-05 S3 -4.28E-01 2.96E-02 -8.30E-03 1.68E-03 2.13E-04 -3.43E-04 -6.65E-05 S4 -3.88E-01 -3.79E-03 2.54E-02 -9.59E-03 3.07E-03 -2.05E-03 5.97E-04 S5 -4.07E-01 8.98E-02 -1.85E-02 3.70E-03 -2.34E-03 -2.97E-05 3.02E-04 S6 -6.02E-01 1.17E-01 -2.68E-02 6.37E-03 -3.13E-03 9.20E-04 -1.83E-04 S7 -1.78E-01 2.00E-03 1.66E-02 -7.74E-03 1.55E-03 -5.61E-04 1.75E-04 S8 2.12E-01 -4.33E-02 4.57E-03 -2.00E-03 5.36E-04 -1.76E-04 -1.39E-06 S9 -2.77E-01 8.59E-02 -1.12E-02 3.18E-03 -9.14E-04 1.54E-04 -9.64E-05 S10 -2.94E-01 1.05E-01 -1.30E-02 5.35E-03 -1.66E-03 5.40E-04 -2.57E-04 S11 2.33E-01 3.42E-02 1.75E-03 4.52E-04 -1.22E-04 1.29E-04 2.84E-04 S12 -5.27E-01 3.72E-02 2.70E-03 -2.76E-03 4.41E-03 -8.85E-04 9.57E-04 S13 -9.80E-01 2.06E-02 9.03E-02 -1.61E-02 2.90E-03 -2.14E-03 1.45E-03 S14 5.52E-02 -3.22E-02 8.13E-02 -1.35E-02 1.82E-03 -2.10E-03 1.27E-04 S15 -2.21E+00 2.21E-01 -1.07E-01 1.24E-02 -6.44E-03 -2.49E-03 -1.32E-03 S16 -3.89E+00 7.25E-01 -2.20E-01 8.19E-02 -3.05E-02 9.75E-03 -3.79E-03

[0148] Table 14-1

[0149]

[0150]

[0151] Table 14-2

[0152] Table 15 gives the values ​​of the effective focal length f of the optical imaging lens in Example 5, half the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens, the maximum field of view FOV of the optical imaging lens, and the entrance pupil diameter EPD.

[0153] parameter f(mm) ImgH(mm) FOV (°) EPD (mm) numerical values 6.28 5.14 80.00 4.72

[0154] Table 15

[0155] 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 10BThe 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, representing the distortion magnitude values ​​corresponding to different image heights. According to... Figures 10A to 10C It can be seen that the optical imaging lens given in Example 5 can achieve good imaging quality.

[0156] Example 6

[0157] The following is for reference Figures 11 to 12C 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.

[0158] like Figure 11 As shown, the optical imaging lens includes, 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, an eighth lens E8, and an imaging plane IMG.

[0159] The first lens E1 has negative optical power, with its object-side surface S1 being concave and its image-side surface S2 being convex. 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 negative 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 negative optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive optical power, with its object-side surface S13 being convex and its image-side surface S14 being convex. The eighth lens E8 has negative optical power, with its object-side surface S15 being concave and its image-side surface S16 being concave. Light from the object passes through each surface S1 to S16 in sequence and is finally imaged on the imaging surface IMG.

[0160] Table 16 shows the basic parameters of the optical imaging lens of Example 6, wherein the units of radius of curvature, thickness / distance and effective focal length are millimeters (mm). Tables 17-1 and 17-2 show 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.

[0161]

[0162] Table 16

[0163]

[0164]

[0165] Table 17-1

[0166] Face number A18 A20 A22 A24 A26 A28 A30 S1 1.05E-05 -8.32E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S2 3.08E-05 -8.53E-06 -1.89E-09 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S3 -2.48E-05 -4.98E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S4 -1.59E-04 1.70E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S5 -6.94E-05 1.85E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S6 -8.46E-06 9.57E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S7 -4.31E-05 1.33E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S8 -6.77E-06 -1.75E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S9 6.48E-05 -7.19E-05 -8.51E-06 -1.38E-06 0.00E+00 0.00E+00 0.00E+00 S10 1.30E-04 -7.91E-05 -1.10E-05 -2.43E-06 -5.63E-07 0.00E+00 0.00E+00 S11 5.03E-05 6.15E-05 5.05E-07 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S12 -7.99E-05 1.21E-04 1.81E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S13 2.83E-04 2.73E-05 1.03E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S14 -8.13E-05 -1.21E-04 -4.49E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S15 -1.22E-03 -4.48E-04 -1.44E-04 -5.32E-05 -2.01E-05 -7.40E-06 -2.17E-06 S16 8.72E-04 -1.63E-04 -2.70E-06 -6.56E-08 0.00E+00 0.00E+00 0.00E+00

[0167] Table 17-2

[0168] Table 18 gives the values ​​of the effective focal length f of the optical imaging lens in Example 6, half the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens ImgH, the maximum field of view FOV of the optical imaging lens, and the entrance pupil diameter EPD.

[0169] parameter f(mm) ImgH(mm) FOV (°) EPD (mm) numerical values 6.29 5.15 80.00 4.73

[0170] Table 18

[0171] 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, representing the distortion magnitude values ​​corresponding to different image heights. According to... Figures 12A to 12C It can be seen that the optical imaging lens given in Example 6 can achieve good imaging quality.

[0172] Example 7

[0173] The following is for reference Figures 13 to 14C 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.

[0174] like Figure 13 As shown, the optical imaging lens includes, 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, an eighth lens E8, and an imaging plane IMG.

[0175] The first lens E1 has negative optical power, with its object-side surface S1 being concave and its image-side surface S2 being convex. 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 negative 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 positive optical power, with its object-side surface S13 being convex and its image-side surface S14 being convex. The eighth lens E8 has negative optical power, with its object-side surface S15 being concave and its image-side surface S16 being concave. Light from the object passes through each surface S1 to S16 in sequence and is finally imaged on the imaging surface IMG.

[0176] Table 19 shows the basic parameters of the optical imaging lens of Example 7, wherein the units of radius of curvature, thickness / distance and effective focal length are millimeters (mm). Tables 20-1 and 20-2 show the higher-order coefficients that can be used for each aspherical mirror in Example 7, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0177]

[0178] Table 19

[0179]

[0180]

[0181] Table 20-1

[0182] Face number A18 A20 A22 A24 A26 A28 A30 S1 1.20E-05 -1.05E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S2 3.08E-05 -8.84E-06 -3.00E-09 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S3 -2.71E-05 -5.41E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S4 -1.25E-04 8.15E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S5 -4.12E-05 1.17E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S6 -7.69E-06 9.55E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S7 -4.41E-05 1.44E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S8 -6.79E-06 -1.44E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S9 5.93E-05 -6.81E-05 -7.80E-06 -1.22E-06 0.00E+00 0.00E+00 0.00E+00 S10 1.13E-04 -8.51E-05 -1.17E-05 -2.51E-06 -5.30E-07 0.00E+00 0.00E+00 S11 7.53E-05 6.92E-05 5.82E-07 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S12 -5.15E-05 1.20E-04 2.12E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S13 2.45E-04 5.52E-05 2.22E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S14 -1.33E-04 -9.79E-05 -3.90E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S15 -1.30E-03 -5.01E-04 -1.61E-04 -5.96E-05 -2.26E-05 -8.41E-06 -2.49E-06 S16 8.17E-04 -1.34E-04 -2.41E-06 -6.30E-08 0.00E+00 0.00E+00 0.00E+00

[0183] Table 20-2

[0184] Table 21 gives the values ​​of the effective focal length f of the optical imaging lens in Example 7, half the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens ImgH, the maximum field of view FOV of the optical imaging lens, and the entrance pupil diameter EPD.

[0185] parameter f(mm) ImgH(mm) FOV (°) EPD (mm) numerical values 6.33 5.18 80.00 4.75

[0186] Table 21

[0187] 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 Embodiment 7 is shown, representing the distortion magnitude values ​​corresponding to different image heights. According to... Figures 14A to 14C It can be seen that the optical imaging lens given in Example 7 can achieve good imaging quality.

[0188] Example 8

[0189] The following is for reference Figures 15 to 16C 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.

[0190] like Figure 15 As shown, the optical imaging lens includes, 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, an eighth lens E8, and an imaging plane IMG.

[0191] The first lens E1 has negative optical power, with its object-side surface S1 being concave and its image-side surface S2 being convex. 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 negative 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 positive optical power, with its object-side surface S13 being convex and its image-side surface S14 being convex. The eighth lens E8 has negative optical power, with its object-side surface S15 being convex and its image-side surface S16 being concave. Light from the object passes through each surface S1 to S16 in sequence and is finally imaged on the imaging surface IMG.

[0192] Table 22 shows the basic parameters of the optical imaging lens of Example 8, wherein the units of radius of curvature, thickness / distance and effective focal length are millimeters (mm). Tables 23-1 and 23-2 show the higher-order coefficients that can be used for each aspherical mirror in Example 8, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0193]

[0194] Table 22

[0195]

[0196]

[0197] Table 23-1

[0198] Face number A18 A20 A22 A24 A26 A28 A30 S1 1.05E-05 -1.02E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S2 3.29E-05 -9.27E-06 -2.97E-09 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S3 -1.80E-05 -6.17E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S4 -1.81E-04 2.78E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S5 -8.34E-05 2.74E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S6 -7.04E-06 1.03E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S7 -4.61E-05 1.29E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S8 -5.55E-06 -1.78E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S9 4.55E-05 -7.11E-05 -8.57E-06 -1.40E-06 0.00E+00 0.00E+00 0.00E+00 S10 1.14E-04 -8.34E-05 -1.16E-05 -2.57E-06 -5.85E-07 0.00E+00 0.00E+00 S11 5.62E-05 6.46E-05 5.74E-07 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S12 -5.08E-05 1.31E-04 2.10E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S13 2.21E-04 4.56E-05 1.79E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S14 -1.55E-04 -1.05E-04 -4.08E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S15 -1.29E-03 -4.62E-04 -1.48E-04 -5.42E-05 -2.03E-05 -7.44E-06 -2.17E-06 S16 9.29E-04 -1.68E-04 -2.84E-06 -7.02E-08 0.00E+00 0.00E+00 0.00E+00

[0199] Table 23-2

[0200] Table 24 gives the values ​​of the effective focal length f of the optical imaging lens in Example 8, half the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens, the maximum field of view FOV of the optical imaging lens, and the entrance pupil diameter EPD.

[0201] parameter f(mm) ImgH(mm) FOV (°) EPD (mm) numerical values 6.30 5.15 80.00 4.73

[0202] Table 24

[0203] 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, representing the distortion magnitude values ​​corresponding to different image heights. According to... Figures 16A to 16C It can be seen that the optical imaging lens given in Example 8 can achieve good imaging quality.

[0204] Example 9

[0205] The following is for reference Figures 17 to 18C 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.

[0206] like Figure 17 As shown, the optical imaging lens includes, 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, an eighth lens E8, and an imaging plane IMG.

[0207] The first lens E1 has negative optical power, with its object-side surface S1 being concave 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 negative 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 negative optical power, with its object-side surface S11 being concave and its image-side surface S12 being convex. The seventh lens E7 has positive optical power, with its object-side surface S13 being convex and its image-side surface S14 being convex. The eighth lens E8 has negative optical power, with its object-side surface S15 being concave and its image-side surface S16 being concave. Light from the object passes through each surface S1 to S16 in sequence and is finally imaged on the imaging surface IMG.

[0208] Table 25 shows the basic parameters of the optical imaging lens of Example 9, wherein the units of radius of curvature, thickness / distance and effective focal length are millimeters (mm). Tables 26-1 and 26-2 show the higher-order coefficients that can be used for each aspherical mirror in Example 9, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0209]

[0210]

[0211] Table 25

[0212] Face number A4 A6 A8 A10 A12 A14 A16 S1 1.26E-01 2.78E-03 -6.63E-03 1.75E-03 -4.08E-04 1.15E-04 -5.05E-05 S2 8.20E-02 5.52E-02 -1.83E-02 4.51E-03 -1.12E-03 2.64E-04 -9.36E-05 S3 -5.18E-01 3.89E-02 -1.08E-02 2.45E-03 -2.54E-04 -2.48E-04 -1.45E-04 S4 -4.28E-01 8.62E-03 1.98E-02 -6.24E-03 1.64E-03 -1.55E-03 2.71E-04 S5 -5.12E-01 1.08E-01 -2.41E-02 5.61E-03 -2.85E-03 1.58E-04 2.04E-04 S6 -6.01E-01 1.19E-01 -2.79E-02 6.59E-03 -2.96E-03 8.10E-04 -1.41E-04 S7 -1.83E-01 3.29E-03 1.53E-02 -6.36E-03 7.53E-04 -2.80E-04 8.12E-05 S8 2.50E-01 -4.28E-02 7.53E-03 -2.80E-03 6.60E-04 -2.05E-04 1.16E-05 S9 -4.75E-01 7.11E-02 -1.44E-02 2.36E-03 -2.42E-04 2.14E-04 -1.70E-04 S10 -5.17E-01 1.07E-01 -1.84E-02 5.11E-03 -1.92E-03 6.62E-04 -3.47E-04 S11 1.36E-01 2.53E-02 1.16E-03 2.20E-03 -2.48E-05 3.64E-04 2.35E-04 S12 -8.20E-01 1.07E-01 -1.32E-02 1.65E-03 2.80E-03 -1.42E-03 9.40E-04 S13 -1.22E+00 7.85E-02 7.19E-02 -9.07E-03 3.84E-03 -3.42E-03 8.63E-04 S14 4.98E-02 -6.27E-02 8.41E-02 -1.39E-02 4.04E-03 -2.78E-03 -1.78E-04 S15 -1.86E+00 1.60E-01 -8.47E-02 7.16E-03 -4.03E-03 -2.58E-03 -9.66E-04 S16 -3.77E+00 6.64E-01 -2.05E-01 7.40E-02 -2.79E-02 8.19E-03 -3.28E-03

[0213] Table 26-1

[0214] Face number A18 A20 A22 A24 A26 A28 A30 S1 1.46E-05 -6.41E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S2 3.36E-05 -9.76E-06 -1.02E-08 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S3 -2.73E-05 -4.72E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S4 -1.44E-04 2.26E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S5 -7.31E-05 2.76E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S6 -2.37E-05 1.57E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S7 -4.25E-05 1.51E-05 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S8 3.38E-06 -3.07E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S9 2.19E-05 -7.85E-05 -6.29E-06 -6.95E-07 0.00E+00 0.00E+00 0.00E+00 S10 1.01E-04 -7.47E-05 -7.75E-06 -1.24E-06 -2.04E-07 0.00E+00 0.00E+00 S11 8.41E-05 4.24E-05 -6.19E-08 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S12 -1.93E-04 1.10E-04 4.54E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S13 1.24E-04 -3.61E-05 -9.90E-07 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S14 -2.74E-05 -1.51E-04 -6.58E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S15 -1.03E-03 -4.04E-04 -1.09E-04 -3.60E-05 -1.25E-05 -4.46E-06 -1.36E-06 S16 5.93E-04 1.98E-05 -3.53E-08 -6.34E-09 0.00E+00 0.00E+00 0.00E+00

[0215] Tables 26-2 and 27 provide the values ​​of the effective focal length f of the optical imaging lens in Example 9, half the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens, the maximum field of view (FOV) of the optical imaging lens, and the entrance pupil diameter (EPD).

[0216] parameter f(mm) ImgH(mm) FOV (°) EPD (mm) numerical values 6.33 5.28 80.00 4.76

[0217] Table 27

[0218] 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 18CThe distortion curve of the optical imaging lens of Embodiment 9 is shown, representing the distortion magnitude values ​​corresponding to different image heights. According to... Figures 18A to 18C It can be seen that the optical imaging lens given in Example 9 can achieve good imaging quality.

[0219] In summary, Examples 1 to 9 satisfy the relationships shown in Table 28.

[0220] Conditional / Example 1 2 3 4 5 6 7 8 9 (|R15|+|R16|) / (T78+CT8) 109.30 14.73 29.66 51.71 32.27 167.71 93.99 63.47 28.57 f7×f8 / (R10×R11) -0.54 -0.49 -0.46 -0.64 -0.55 -0.43 -0.50 -0.49 0.48 (V7+V8) / (V7-V8) 3.95 4.55 4.04 3.99 3.57 3.71 4.02 3.95 3.42 (|f6|+|f5|) / (|f6|-|f5|) 3.66 3.61 9.04 5.10 -1.01 1.01 4.08 6.43 1.04 (|f8|+|f6|) / (|f8|-|f6|) -1.16 -1.15 -1.21 -1.18 -1.25 -1.00 -1.17 -1.19 -1.00 (CT3+CT4) / (T34+T45) 11.77 11.93 12.85 11.48 17.81 13.89 13.70 14.70 11.42 CT5×CT6 / (T56×T67) 1.95 1.84 1.80 1.94 1.80 1.99 1.81 1.86 1.96 EPD×f / (CT6×T67) 69.18 47.23 60.81 69.37 69.24 76.63 66.30 66.77 100.26 |f6×T56 / ((CT5+CT6)×R12)| 0.18 0.05 0.35 0.19 0.33 169.61 0.02 0.18 57.71 f×tan(HFOV) / (f7+f8) 1.72 1.58 1.41 1.37 1.43 2.20 1.61 1.56 2.32 (CT7+CT8) / (CT7-CT8) 3.05 2.76 2.84 3.19 3.10 2.93 3.09 3.10 2.83

[0221] Table 28

[0222] 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.

[0223] 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, characterized in that, In order from the object side to the image side along the optical axis, the optical imaging lens comprises: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens, wherein The first lens has negative refractive power, and the object side surface thereof is a concave surface; The second lens has positive refractive power, and the object side surface thereof is a convex surface, and the image side surface thereof is a concave surface; The third lens has negative refractive power, and the object side surface thereof is a convex surface, and the image side surface thereof is a concave surface; The fourth lens has positive refractive power, and the object side surface thereof is a convex surface, and the image side surface thereof is a convex surface; The object side surface of the fifth lens is a convex surface, and the image side surface thereof is a concave surface; The seventh lens has positive refractive power, and the object side surface thereof is a convex surface, and the image side surface thereof is a convex surface; The eighth lens has negative refractive power, and the image side surface thereof is a concave surface; The fifth lens has negative refractive power, and the sixth lens has positive refractive power or negative refractive power; or the fifth lens has positive refractive power, and the sixth lens has positive refractive power; The number of lenses with refractive power in the optical imaging lens is eight; The radius of curvature R15 of the object side surface of the eighth lens, the radius of curvature R16 of the image side surface of the eighth lens, the distance T78 on the optical axis from the image side surface of the seventh lens to the object side surface of the eighth lens, the central thickness CT7 of the seventh lens on the optical axis and the central thickness CT8 of the eighth lens on the optical axis satisfy: 14.7<(|R15|+|R16|) / (T78+CT8)≤167.71 and 2.76≤(CT7+CT8) / (CT7-CT8)≤3.19; The effective focal length f of the optical imaging lens, the maximum half field of view HFOV of the optical imaging lens, the effective focal length f7 of the seventh lens and the effective focal length f8 of the eighth lens satisfy: 1.37≤f×tan(HFOV) / (f7+f8)≤2.

32.

2. The optical imaging lens according to claim 1, wherein, The effective focal length f7 of the seventh lens, the effective focal length f8 of the eighth lens, the radius of curvature R10 of the image side surface of the fifth lens and the radius of curvature R11 of the object side surface of the sixth lens satisfy: -0.64<f7×f8 / (R10×R11)<0.

48.

3. The optical imaging lens according to claim 1, wherein, The dispersion coefficient V7 of the seventh lens and the dispersion coefficient V8 of the eighth lens satisfy: 3.4<(V7+V8) / (V7-V8)≤4.

55.

4. The optical imaging lens according to claim 1, wherein, The effective focal length f6 of the sixth lens and the effective focal length f5 of the fifth lens satisfy: -1.01≤(|f6|+|f5|) / (|f6|-|f5|)≤9.

04.

5. The optical imaging lens according to claim 1, wherein, The effective focal length f8 of the eighth lens and the effective focal length f6 of the sixth lens satisfy: -1.26<(|f8|+|f6|) / (|f8|-|f6|)<-1.

6. The optical imaging lens according to claim 1, wherein, The central thickness CT3 of the third lens on the optical axis, the central thickness CT4 of the fourth lens on the optical axis, the distance T34 of the image side surface of the third lens to the object side surface of the fourth lens on the optical axis, and the distance T45 of the image side surface of the fourth lens to the object side surface of the fifth lens on the optical axis satisfy: 11.4 < (CT3 + CT4) / (T34 + T45) ≤ 17.

81.

7. The optical imaging lens according to claim 1, wherein, The central thickness CT5 of the fifth lens on the optical axis, the central thickness CT6 of the sixth lens on the optical axis, the distance T56 of the image side surface of the fifth lens to the object side surface of the sixth lens on the optical axis, and the distance T67 of the image side surface of the sixth lens to the object side surface of the seventh lens on the optical axis satisfy: 1.80 ≤ CT5 × CT6 / (T56 × T67) < 2.

0.

8. The optical imaging lens according to claim 1, wherein, The entrance pupil diameter EPD of the optical imaging lens, the effective focal length f of the optical imaging lens, the central thickness CT6 of the sixth lens on the optical axis, and the distance T67 of the image side surface of the sixth lens to the object side surface of the seventh lens on the optical axis satisfy: 47.2 < (EPD / CT6) × (f / T67) < 100.

3. The effective focal length f6 of the sixth lens, the radius of curvature R12 of the image side surface of the sixth lens, the central thickness CT5 of the fifth lens on the optical axis, the central thickness CT6 of the sixth lens on the optical axis, and the distance T56 of the image side surface of the fifth lens to the object side surface of the sixth lens on the optical axis satisfy: 0.02 ≤ |f6 × T56 / ((CT5 + CT6) × R12)| ≤ 169.

61.

9. The optical imaging lens according to claim 1, wherein, The second lens, the fourth lens, and the sixth lens have the same refractive index and dispersion coefficient.

10. The optical imaging lens according to any of claims 1 to 9, wherein, The material of the fifth lens is glass.

11. The optical imaging lens according to any of claims 1 to 9, wherein, ​

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