Optical imaging lens

Abstract

The present application discloses an optical imaging lens, which sequentially includes, from the object side to the image side along the optical axis: a variable aperture; a first lens with positive optical power, whose object side is convex and image side is concave; a second lens with optical power; a third lens with optical power; a fourth lens with optical power; a fifth lens with optical power; a sixth lens with optical power; a seventh lens with positive optical power; and an eighth lens with negative optical power. The optical imaging lens satisfies: 1.2 < f123 / f67 < 1.8, where f123 is the combined focal length of the first lens, the second lens and the third lens, and f67 is the combined focal length of the sixth lens and the seventh lens. The number of lenses with optical power in the optical imaging lens is eight.

Description

[0001] Divisional Application Statement

[0002] This application is a divisional application of the Chinese invention patent application with the invention title "Optical Imaging Lens", application number 202110640988.8, which was filed on June 9, 2021. Technical Field

[0003] This application relates to the field of optical elements, and specifically, to an optical imaging lens. Background Art

[0004] In recent years, with the development of camera technologies for portable electronic products such as smart phones, smart phones with high imaging quality have been increasingly favored by many consumers. However, due to the natural limitation of the narrow space of smart phones, it seriously affects the imaging quality of the optical imaging lens mounted on the smart phone in a complex light environment. Therefore, how to reasonably set the optical power and key technical parameters of the optical imaging lens so that it can improve the shooting quality in a complex light environment while meeting the existing mobile phone installation space has become one of the difficult problems that many lens manufacturers urgently need to solve. Summary of the Invention

[0005] This application provides an optical imaging lens, which sequentially includes, from the object side to the image side along the optical axis: an aperture stop; a first lens with a positive optical power, whose object side is convex and image side is concave; a second lens with an optical power; a third lens with an optical power; a fourth lens with an optical power; a fifth lens with an optical power; a sixth lens with an optical power; a seventh lens with a positive optical power; and an eighth lens with a negative optical power. The optical imaging lens can satisfy: 1.2 < f123 / f67 < 1.8, where f123 is the combined focal length of the first lens, the second lens, and the third lens, and f67 is the combined focal length of the sixth lens and the seventh lens; the number of lenses with optical power in the optical imaging lens is eight.

[0006] In one embodiment, the effective focal length f1 of the first lens, the curvature radius R1 of the object side of the first lens, and the curvature radius R2 of the image side of the first lens can satisfy: 0.3 < f1 / (R2 - R1) < 4.8.

[0007] In one embodiment, the curvature radius R3 of the object side of the second lens and the curvature radius R4 of the image side of the second lens can satisfy: 0.8 < R3 / R4 < 2.0.

[0008] In one embodiment, the curvature radius R13 of the object side of the seventh lens, the curvature radius R14 of the image side of the seventh lens, and the effective focal length f7 of the seventh lens can satisfy: 0.8 < (R14 - R13) / f7 < 1.5.

[0009] In one embodiment, the effective focal length f8 of the eighth lens, the distance T78 between the seventh lens and the eighth lens on the optical axis, and the central thickness CT8 of the eighth lens on the optical axis may satisfy: -3.6 < f8 / (T78 + CT8) < -3.0.

[0010] In one embodiment, the combined focal length f45 of the fourth lens and the fifth lens, the radius of curvature R7 of the object side surface of the fourth lens, the radius of curvature R8 of the image side surface of the fourth lens, the radius of curvature R9 of the object side surface of the fifth lens, and the radius of curvature R10 of the image side surface of the fifth lens may satisfy: -2.0 < f45 / (R7 + R8 + R9 + R10) < -0.2.

[0011] In one embodiment, the central thickness CT1 of the first lens on the optical axis, the central thickness CT2 of the second lens on the optical axis, the central thickness CT3 of the third lens on the optical axis, the edge thickness ET1 of the first lens, the edge thickness ET2 of the second lens, and the edge thickness ET3 of the third lens may satisfy: 1.5 < (CT1 + CT2 + CT3) / (ET1 + ET2 + ET3) < 2.0.

[0012] In one embodiment, the edge thickness ET4 of the fourth lens, the edge thickness ET5 of the fifth lens, and the edge thickness ET6 of the sixth lens may satisfy: 1.0 < (ET4 + ET5) / ET6 < 2.0.

[0013] In one embodiment, the distance SAG71 on the optical axis from the intersection of the object side surface of the seventh lens and the optical axis to the vertex of the effective radius of the object side surface of the seventh lens, the distance SAG72 on the optical axis from the intersection of the image side surface of the seventh lens and the optical axis to the vertex of the effective radius of the image side surface of the seventh lens, and the edge thickness ET7 of the seventh lens may satisfy: -2.8 < (SAG71 + SAG72) / ET7 < -1.6.

[0014] In one embodiment, the distance SAG81 on the optical axis from the intersection of the object side surface of the eighth lens and the optical axis to the vertex of the effective radius of the object side surface of the eighth lens and the distance SAG82 on the optical axis from the intersection of the image side surface of the eighth lens and the optical axis to the vertex of the effective radius of the image side surface of the eighth lens may satisfy: 1.2 < SAG81 / SAG82 < 1.9.

[0015] In one embodiment, the maximum entrance pupil diameter EPDmax and the minimum entrance pupil diameter EPDmin of the optical imaging lens may satisfy: 1.1 < EPDmax / EPDmin < 3.1.

[0016] In one embodiment, the maximum entrance pupil diameter EPDmax, the minimum entrance pupil diameter EPDmin of the optical imaging lens, and the total effective focal length f of the optical imaging lens may satisfy: 2.2 < f / (EPDmax - EPDmin) < 20.

[0017] In one embodiment, the object side surface of the sixth lens is convex, and the image side surface is concave; and the object side surface of the seventh lens is convex, and the image side surface is concave.

[0018] In an exemplary embodiment of the present application, by reasonably setting the optical power and surface shape characteristics of each lens, such as setting the first lens to have a positive optical power, the object side surface being convex, and the image side surface being concave, setting the seventh lens to have a positive optical power, and setting the eighth lens to have a negative optical power, it is beneficial to quickly converge light, converge the light passing aperture of the lens, and is also beneficial to converge the light in the inner field of view of the lens to correct paraxial aberrations, and is also beneficial to converge the light in the outer field of view of the lens to correct outer field aberrations. Exemplarily, by setting 1.2 < f123 / f67 < 1.8, it is beneficial to reduce the deflection angle of light and improve the imaging quality of the optical imaging lens. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 1A and Figure 1B respectively show schematic structural diagrams of the optical imaging lens according to Embodiment 1 of the present application when the aperture value is 1.47 and 2.05;

[0021] Figure 2A and Figure 2B respectively show the astigmatism curve and distortion curve of the optical imaging lens of Embodiment 1 when the aperture value is 1.47;

[0022] Figure 2C and Figure 2D respectively show the astigmatism curve and distortion curve of the optical imaging lens of Embodiment 1 when the aperture value is 2.05;

[0023] Figure 3A and Figure 3B respectively show schematic structural diagrams of the optical imaging lens according to Embodiment 2 of the present application when the aperture value is 1.46 and 2.05;

[0024] Figure 4A and Figure 4B respectively show the astigmatism curve and distortion curve of the optical imaging lens of Embodiment 2 when the aperture value is 1.46;

[0025] Figure 4Cand Figure 4D respectively show the astigmatism curve and distortion curve of the optical imaging lens according to Embodiment 2 when the aperture value is 2.05;

[0026] Figure 5A and Figure 5B respectively show the schematic structural diagrams of the optical imaging lens according to Embodiment 3 of the present application when the aperture values are 1.46 and 2.05;

[0027] Figure 6A and Figure 6B respectively show the astigmatism curve and distortion curve of the optical imaging lens according to Embodiment 3 when the aperture value is 1.46;

[0028] Figure 6C and Figure 6D respectively show the astigmatism curve and distortion curve of the optical imaging lens according to Embodiment 3 when the aperture value is 2.05;

[0029] Figure 7A and Figure 7B respectively show the schematic structural diagrams of the optical imaging lens according to Embodiment 4 of the present application when the aperture values are 1.46 and 2.05;

[0030] Figure 8A and Figure 8B respectively show the astigmatism curve and distortion curve of the optical imaging lens according to Embodiment 4 when the aperture value is 1.46;

[0031] Figure 8C and Figure 8D respectively show the astigmatism curve and distortion curve of the optical imaging lens according to Embodiment 4 when the aperture value is 2.05;

[0032] Figure 9A and Figure 9B respectively show the schematic structural diagrams of the optical imaging lens according to Embodiment 5 of the present application when the aperture values are 1.47 and 2.05;

[0033] Figure 10A and Figure 10B respectively show the astigmatism curve and distortion curve of the optical imaging lens according to Embodiment 5 when the aperture value is 1.47;

[0034] Figure 10C and Figure 10D respectively show the astigmatism curve and distortion curve of the optical imaging lens according to Embodiment 5 when the aperture value is 2.05;

[0035] Figure 11A and Figure 11B respectively show the schematic structural diagrams of the optical imaging lens according to Embodiment 6 of the present application when the aperture values are 1.46 and 4.00;

[0036] Figure 12A and Figure 12B respectively show the astigmatism curve and distortion curve of the optical imaging lens of Embodiment 6 when the aperture value is 1.46; and

[0037] Figure 12C and Figure 12D respectively show the astigmatism curve and distortion curve of the optical imaging lens of Embodiment 6 when the aperture value is 4.00. Detailed Embodiments

[0038] To better understand the present application, more detailed descriptions of various aspects of the present application will be made with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of exemplary embodiments of the present application and do not limit the scope of the present application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0039] It should be noted that in this specification, the expressions such as first, second, third, etc. are only used to distinguish one feature from another feature and do not represent any limitation on the feature. Therefore, without departing from the teachings of the present application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0040] In the accompanying drawings, for the sake of convenience of illustration, the thickness, size and shape of the lens have been slightly exaggerated. Specifically, the spherical or aspherical shapes shown in the drawings are shown by way of example. That is, the spherical or aspherical shapes are not limited to the spherical or aspherical shapes shown in the drawings. The drawings are only examples and are not drawn 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 position of the convex surface is not defined, it means that the lens surface is at least convex in the paraxial region; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is at least concave in the paraxial region. The surface of each lens closest to the object to be photographed is called the object side surface of the lens, and the surface of each lens closest to the imaging surface is called the image side surface of the lens.

[0042] It should also be understood that the terms "comprise", "comprising", "have", "including" and / or "containing", when used in this specification, denote the presence of the stated features, elements and / or components, but do not preclude the presence or addition of one or more other features, elements, components and / or combinations thereof. In addition, when an expression such as "at least one of..." appears after a list of listed features, it modifies the entire list of listed features rather than an individual element in the list. In addition, when describing embodiments of the present application, the use of "may" means "one or more embodiments of the present application". And the term "exemplary" is intended to refer to an example or illustration.

[0043] Unless otherwise defined, all terms (including technical and scientific terms) used herein 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 (such as those defined in a common dictionary) should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0044] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0045] The features, principles and other aspects of the present application will be described in detail below.

[0046] The optical imaging lens according to an exemplary embodiment of the present application may include eight lenses having 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 in sequence along the optical axis from the object side to the image side. There may be a spacing distance between any two adjacent lenses among the first lens to the eighth lens.

[0047] According to an exemplary embodiment of the present application, the first lens may have a positive optical power, its object side surface may be convex, and its image side surface may be concave; the second lens may have a positive optical power or a negative optical power; the third lens may have a positive optical power or a negative optical power; the fourth lens may have a positive optical power or a negative optical power; the fifth lens may have a positive optical power or a negative optical power; the sixth lens may have a positive optical power or a negative optical power; the seventh lens may have a positive optical power; and the eighth lens may have a negative optical power.

[0048] In an exemplary embodiment, the first lens having a positive optical power is beneficial to quickly converge light rays and converge the light passing aperture of the lens; the seventh lens having a positive optical power is beneficial to converge the light rays in the inner field of view of the lens and correct paraxial aberrations; and the eighth lens having a negative optical power is beneficial to converge the light rays in the outer field of view of the lens and correct the outer field aberrations.

[0049] In an exemplary embodiment, the optical imaging lens according to the present application further includes a variable aperture disposed between the object side and the first lens. Specifically, the aperture is variable in a direction perpendicular to the optical axis. That is, the aperture size of the aperture can be adjusted. As Figure 1A and Figure 1B shown, the optical imaging lens is provided with a variable aperture STO such that the aperture of the aperture STO is variable, and thus the effect of changing the entrance pupil diameter of the optical imaging lens can be achieved. By changing the entrance pupil diameter of the optical imaging lens in the present application, the effect of continuously changing the aperture value of the optical imaging lens can be achieved, and thus the aperture value of the lens has a relatively large change range.

[0050] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: f / (EPDmax - EPDmin) > 2.2, where EPDmax is the maximum entrance pupil diameter of the optical imaging lens, EPDmin is the minimum entrance pupil diameter of the optical imaging lens, and f is the total effective focal length of the optical imaging lens. More specifically, f, EPDmax, and EPDmin can further satisfy: 2.2 < f / (EPDmax - EPDmin) < 20. Further still, f, EPDmax, and EPDmin can satisfy: 2.2 < f / (EPDmax - EPDmin) < 5.5. Satisfying f / (EPDmax - EPDmin) > 2.2 can enable the optical imaging lens to have a relatively large aperture change range and focal length change range, and can preferably improve the imaging quality of the lens.

[0051] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 0.3 < f1 / (R2 - R1) < 4.8, where f1 is the effective focal length of the first lens, R1 is the curvature radius of the object side surface of the first lens, and R2 is the curvature radius of the image side surface of the first lens. More specifically, f1, R2, and R1 can further satisfy: 0.4 < f1 / (R2 - R1) < 4.7. Satisfying 0.3 < f1 / (R2 - R1) < 4.8 can reasonably distribute the optical power of the first lens, and thus can effectively control the aberration correction of the first lens.

[0052] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 0.8 < R3 / R4 < 2.0, where R3 is the curvature radius of the object side surface of the second lens, and R4 is the curvature radius of the image side surface of the second lens. More specifically, R3 and R4 can further satisfy: 1.0 < R3 / R4 < 1.9. Satisfying 0.8 < R3 / R4 < 2.0 can make the surface shape of the second lens smooth, which is beneficial to making the aperture of the second lens relatively large, and thus is beneficial to the forming and manufacturing of the second lens.

[0053] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.8 < (R14 - R13) / f7 < 1.5, where R13 is the radius of curvature of the object side surface of the seventh lens, R14 is the radius of curvature of the image side surface of the seventh lens, and f7 is the effective focal length of the seventh lens. More specifically, R14, R13, and f7 may further satisfy: 0.9 < (R14 - R13) / f7 < 1.4. Satisfying 0.8 < (R14 - R13) / f7 < 1.5 can reasonably distribute the optical power of the seventh lens, and thus can effectively control the aberration correction of the first lens.

[0054] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: -3.6 < f8 / (T78 + CT8) < -3.0, where f8 is the effective focal length of the eighth lens, T78 is the distance between the seventh lens and the eighth lens on the optical axis, and CT8 is the central thickness of the eighth lens on the optical axis. More specifically, f8, T78, and CT8 may further satisfy: -3.5 < f8 / (T78 + CT8) < -3. \alpha. Satisfying -3.6 < f8 / (T78 + CT8) < -3.0 can effectively balance the field curvature of the optical imaging lens, make the optical imaging lens have reasonable field curvature, and at the same time can also make the structure of the eighth lens uniform and reasonable.

[0055] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1.2 < f123 / f67 < 1.8, where f123 is the combined focal length of the first lens, the second lens, and the third lens, and f67 is the combined focal length of the sixth lens and the seventh lens. More specifically, f123 and f67 may further satisfy: 1.4 < f123 / f67 < 1.7. Satisfying 1.2 < f123 / f67 < 1.8 can reduce the deflection angle of light and improve the imaging quality of the optical imaging lens.

[0056] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: -2.0 < f45 / (R7 + R8 + R9 + R10) < -0.2, where f45 is the combined focal length of the fourth lens and the fifth lens, R7 is the radius of curvature of the object side surface of the fourth lens, R8 is the radius of curvature of the image side surface of the fourth lens, R9 is the radius of curvature of the object side surface of the fifth lens, and R10 is the radius of curvature of the image side surface of the fifth lens. More specifically, f45, R7, R8, R9, and R10 may further satisfy: -2.0 < f45 / (R7 + R8 + R9 + R10) < -0.4. Satisfying -2.0 < f45 / (R7 + R8 + R9 + R10) < -0.2 can reduce the deflection angle of light and improve the imaging quality of the optical imaging lens.

[0057] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1.5 < (CT1 + CT2 + CT3) / (ET1 + ET2 + ET3) < 2.0, where CT1 is the central thickness of the first lens on the optical axis, CT2 is the central thickness of the second lens on the optical axis, CT3 is the central thickness of the third lens on the optical axis, ET1 is the edge thickness of the first lens, ET2 is the edge thickness of the second lens, and ET3 is the edge thickness of the third lens. More specifically, CT1, CT2, CT3, ET1, ET2, and ET3 may further satisfy: 1.6 < (CT1 + CT2 + CT3) / (ET1 + ET2 + ET3) < 1.9. Satisfying 1.5 < (CT1 + CT2 + CT3) / (ET1 + ET2 + ET3) < 2.0 can effectively balance the field curvature of the optical imaging lens, make the optical imaging lens have a reasonable field curvature, and at the same time make the structures of the first lens, the second lens, and the third lens uniform and reasonable, which is helpful for the molding of the first lens, the second lens, and the third lens.

[0058] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1.0 < (ET4 + ET5) / ET6 < 2.0, where ET4 is the edge thickness of the fourth lens, ET5 is the edge thickness of the fifth lens, and ET6 is the edge thickness of the sixth lens. Satisfying 1.0 < (ET4 + ET5) / ET6 < 2.0 can make the structures of the fourth lens, the fifth lens, and the sixth lens uniform and reasonable, which is helpful for the molding of the fourth lens, the fifth lens, and the sixth lens.

[0059] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: -2.8 < (SAG71 + SAG72) / ET7 < -1.6, where SAG71 is the distance from the intersection of the object side of the seventh lens and the optical axis to the vertex of the effective radius of the object side of the seventh lens on the optical axis, SAG72 is the distance from the intersection of the image side of the seventh lens and the optical axis to the vertex of the effective radius of the image side of the seventh lens on the optical axis, and ET7 is the edge thickness of the seventh lens. More specifically, SAG71, SAG72, and ET7 may further satisfy: -2.7 < (SAG71 + SAG72) / ET7 < -1.7. Satisfying -2.8 < (SAG71 + SAG72) / ET7 < -1.6 can effectively constrain the thickness ratio of the seventh lens, which is beneficial to reducing the structural sensitivity of the seventh lens and is beneficial to the molding and demolding of the seventh lens.

[0060] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1.2 < SAG81 / SAG82 < 1.9, where SAG81 is the distance from the intersection of the object side surface of the eighth lens and the optical axis to the vertex of the effective radius of the object side surface of the eighth lens on the optical axis, and SAG82 is the distance from the intersection of the image side surface of the eighth lens and the optical axis to the vertex of the effective radius of the image side surface of the eighth lens on the optical axis. Satisfying 1.2 < SAG81 / SAG82 < 1.9 can effectively constrain the thickness ratio of the eighth lens, which is beneficial to reducing the structural sensitivity of the eighth lens and is beneficial to the molding and demolding of the eighth lens.

[0061] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1.1 < EPDmax / EPDmin < 3.1, where EPDmax is the maximum entrance pupil diameter of the optical imaging lens, and EPDmin is the minimum entrance pupil diameter of the optical imaging lens. More specifically, EPDmax and EPDmin may further satisfy: 1.3 < EPDmax / EPDmin < 2.9. Satisfying 1.1 < EPDmax / EPDmin < 3.1 reflects that the optical imaging lens has a large variable aperture range. In an example, the maximum aperture of the optical imaging lens can reach F#1.4, and the minimum aperture can reach F#4.0 or above, which is conducive to achieving seamless connection from extremely dark to extremely bright environments.

[0062] In an exemplary embodiment, the object side surface of the sixth lens is convex, and the image side surface is concave; and the object side surface of the seventh lens is convex, and the image side surface is concave. By reasonably setting the surface types of the sixth lens and the seventh lens, it is beneficial to reasonably distribute the optical power of the sixth lens and the seventh lens, which is beneficial to reducing the deflection angle of light rays and improving the imaging quality of the optical imaging lens.

[0063] Optionally, the above optical imaging lens may further include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging surface. The present application proposes an optical imaging lens having characteristics such as miniaturization, large image surface, variable aperture, and high imaging quality. The optical imaging lens provided by the present application can not only increase the light input of the lens in a dark environment and enhance the image quality, but also avoid adverse effects such as overexposure in a bright environment. The optical imaging lens according to the above embodiment of the present application may employ multiple lenses, such as eight lenses as described above. By reasonably distributing the optical power, surface type, material, central thickness of each lens, and the axial spacing between each lens, etc., the incident light rays can be effectively converged, the optical total length of the imaging lens can be reduced, and the processability of the imaging lens can be improved, making the optical imaging lens more conducive to production and processing.

[0064] In an embodiment of the present application, at least one of the mirror surfaces of each lens is an aspherical mirror surface, that is, at least one of the object-side surface of the first lens to the image-side surface of the eighth lens is an aspherical mirror surface. The characteristics of an aspherical lens are that the curvature changes continuously from the center of the lens to the periphery of the lens. Different from a spherical lens with a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has better curvature radius characteristics and has the advantages of improving distortion aberration and astigmatism aberration. After using an aspherical lens, it is possible to eliminate the aberration that appears during imaging as much as possible, thereby improving the imaging quality. Optionally, at least one of the object-side surface and the image-side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, and the eighth lens is an aspherical mirror surface. Optionally, both the object-side surface and the image-side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, and the eighth lens are aspherical mirror surfaces.

[0065] However, those skilled in the art should understand that without departing from the technical solutions claimed in the present application, the number of lenses constituting the optical imaging lens can be changed to obtain the various results and advantages described in this specification. For example, although eight lenses are described as an example in the embodiment, the optical imaging lens is not limited to including eight lenses. If necessary, the optical imaging lens may also include other numbers of lenses.

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

[0067] Example 1

[0068] The following refers to Figures 1A to 2D Describe the optical imaging lens according to Embodiment 1 of the present application. Figure 1A And Figure 1B Schematically show the structures of the optical imaging lens according to Embodiment 1 of the present application when the aperture value is 1.47 and 2.05, respectively.

[0069] As Figure 1A And Figure 1B Shown, the optical imaging lens sequentially includes, from the object side to the image side: an iris diaphragm STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an imaging surface S19.

[0070] The first lens E1 has a positive optical power, its object side S1 is convex, and its image side S2 is concave. The second lens E2 has a positive optical power, its object side S3 is convex, and its image side S4 is concave. The third lens E3 has a positive optical power, its object side S5 is convex, and its image side S6 is concave. The fourth lens E4 has a negative optical power, its object side S7 is convex, and its image side S8 is concave. The fifth lens E5 has a positive optical power, its object side S9 is convex, and its image side S10 is concave. The sixth lens E6 has a positive optical power, its object side S11 is convex, and its image side S12 is concave. The seventh lens E7 has a positive optical power, its object side S13 is convex, and its image side S14 is concave. The eighth lens E8 has a negative optical power, its object side S15 is concave, and its image side S16 is concave. The filter E9 has an object side S17 and an image side S18. The light from the object sequentially passes through the surfaces S1 to S18 and finally forms an image on the imaging surface S19.

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

[0072]

[0073] Table 1

[0074] In this example, the total effective focal length f of the optical imaging lens is 5.75 mm, the total length of the optical imaging lens (i.e., the distance on the optical axis from the object side S1 of the first lens E1 to the imaging surface S19 of the optical imaging lens) TTL is 7.24 mm, half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens ImgH is 5.38 mm, the minimum value FNOmin of the F-number of the optical imaging lens is 1.47, and the maximum value FNOmax of the F-number of the optical imaging lens is 2.05. When the F-number takes the minimum value, the relative aperture of the optical imaging lens is the largest; when the F-number takes the maximum value, the relative aperture of the optical imaging lens is the smallest.

[0075] In Example 1, the object side and the image side of any one of the first lens E1 to the eighth lens E8 are aspherical surfaces, and the surface profiles of each aspherical lens can be defined by, but not limited to, the following aspherical formula:

[0076] (1)

[0077] where is the sagitta of the distance from the vertex of the aspherical surface when the aspherical surface is at a position with a height of h along the optical axis; c is the paraxial curvature of the aspherical surface, c =1 / R (i.e., the paraxial curvaturec is the reciprocal of the radius of curvature R in Table 1 above); k is the conic coefficient; Ai is the non-spherical i -th order correction coefficient. Tables 2-1 and 2-2 below give the higher-order term coefficients for each of the aspherical mirrors S1-S16 in Example 1 A 4 and A 6 and A 8 and A 10 and A 12 and A 14 and A 16 and A 18 and A 20 and A 22 and A 24 and A 26 and A 28 and A 30 .

[0078]

[0079] Table 2-1

[0080]

[0081] Table 2-2

[0082] Figure 2A and Figure 2C respectively show the astigmatism curves of the optical imaging lens of Example 1 at aperture values of 1.47 and 2.05, which represent the meridional image plane curvature and the sagittal image plane curvature. Figure 2B and Figure 2D respectively show the distortion curves of the optical imaging lens of Example 1 at aperture values of 1.47 and 2.05, which represent the distortion magnitude values corresponding to different image heights. According to Figures 2A to 2D it can be seen that the optical imaging lens given in Example 1 can achieve good imaging quality.

[0083] Example 2

[0084] The following is a reference to Figures 3A to 4DDescribe the optical imaging lens according to Embodiment 2 of the present application. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to those in Embodiment 1 will be omitted. Figure 3A and Figure 3B respectively show schematic structural diagrams of the optical imaging lens according to Embodiment 2 of the present application when the aperture value is 1.46 and 2.05.

[0085] As Figure 3A and Figure 3B shown, the optical imaging lens sequentially includes, from the object side to the image side: an iris diaphragm STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an imaging surface S19.

[0086] The first lens E1 has a positive optical power, its object surface S1 is convex, and its image surface S2 is concave. The second lens E2 has a negative optical power, its object surface S3 is convex, and its image surface S4 is concave. The third lens E3 has a negative optical power, its object surface S5 is convex, and its image surface S6 is concave. The fourth lens E4 has a negative optical power, its object surface S7 is convex, and its image surface S8 is concave. The fifth lens E5 has a positive optical power, its object surface S9 is convex, and its image surface S10 is concave. The sixth lens E6 has a negative optical power, its object surface S11 is convex, and its image surface S12 is concave. The seventh lens E7 has a positive optical power, its object surface S13 is convex, and its image surface S14 is concave. The eighth lens E8 has a negative optical power, its object surface S15 is convex, and its image surface S16 is concave. The filter E9 has an object surface S17 and an image surface S18. Light from the object sequentially passes through the surfaces S1 to S18 and finally forms an image on the imaging surface S19.

[0087] In this example, the total effective focal length f of the optical imaging lens is 5.75 mm, the total length TTL of the optical imaging lens is 7.24 mm, half of the diagonal length of the effective pixel region on the imaging surface of the optical imaging lens ImgH is 5.38 mm, the minimum value FNOmin of the F-number of the optical imaging lens is 1.46, and the maximum value FNOmax of the F-number of the optical imaging lens is 2.05. When the F-number takes the minimum value, the relative aperture of the optical imaging lens is the largest; when the F-number takes the maximum value, the relative aperture of the optical imaging lens is the smallest.

[0088] Table 3 shows the basic parameter table of the optical imaging lens of Embodiment 2, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm). Tables 4-1 and 4-2 show the high-order term coefficients that can be used for each aspherical mirror surface in Embodiment 2, where each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0089]

[0090] Table 3

[0091]

[0092] Table 4-1

[0093]

[0094] Table 4-2

[0095] Figure 4A and Figure 4C respectively show the astigmatism curves of the optical imaging lens of Embodiment 2 when the aperture values are 1.46 and 2.05, which represent the meridional image plane curvature and the sagittal image plane curvature. Figure 4B and Figure 4D respectively show the distortion curves of the optical imaging lens of Embodiment 2 when the aperture values are 1.46 and 2.05, which represent the distortion magnitude values corresponding to different image heights. According to Figures 4A to 4D it can be seen that the optical imaging lens given in Embodiment 2 can achieve good imaging quality.

[0096] Example 3

[0097] The following refers to 5A to 6D to describe the optical imaging lens according to Embodiment 3 of the present application. Figure 5A and Figure 5B respectively show the schematic structural diagrams of the optical imaging lens according to Embodiment 3 of the present application when the aperture values are 1.46 and 2.05.

[0098] As Figure 5A and Figure 5B shown, the optical imaging lens sequentially includes, from the object side to the image side: a variable aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an imaging surface S19.

[0099] The first lens E1 has a positive optical power, its object side S1 is convex, and its image side S2 is concave. The second lens E2 has a negative optical power, its object side S3 is convex, and its image side S4 is concave. The third lens E3 has a positive optical power, its object side S5 is convex, and its image side S6 is concave. The fourth lens E4 has a positive optical power, its object side S7 is convex, and its image side S8 is concave. The fifth lens E5 has a negative optical power, its object side S9 is convex, and its image side S10 is concave. The sixth lens E6 has a negative optical power, its object side S11 is convex, and its image side S12 is concave. The seventh lens E7 has a positive optical power, its object side S13 is convex, and its image side S14 is concave. The eighth lens E8 has a negative optical power, its object side S15 is convex, and its image side S16 is concave. The filter E9 has an object side S17 and an image side S18. Light from the object sequentially passes through the surfaces S1 to S18 and finally forms an image on the imaging surface S19.

[0100] In this example, the total effective focal length f of the optical imaging lens is 5.75 mm, the total length TTL of the optical imaging lens is 7.23 mm, half of the diagonal length of the effective pixel region on the imaging surface of the optical imaging lens is ImgH = 5.38 mm, the minimum value FNOmin of the F-number of the optical imaging lens is 1.46, and the maximum value FNOmax of the F-number of the optical imaging lens is 2.05. When the F-number takes the minimum value, the relative aperture of the optical imaging lens is the largest; when the F-number takes the maximum value, the relative aperture of the optical imaging lens is the smallest.

[0101] Table 5 shows the basic parameter table of the optical imaging lens of Example 3, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm). Tables 6-1 and 6-2 show the high-order term coefficients of the aspherical mirrors that can be used in Example 3, and each aspherical surface type can be defined by the formula (1) given in Example 1 above.

[0102]

[0103] Table 5

[0104]

[0105] Table 6-1

[0106]

[0107] Table 6-2

[0108] Figure 6A and Figure 6C respectively show the astigmatism curves of the optical imaging lens of Example 3 when the aperture value is 1.46 and 2.05, which represent the meridional image plane curvature and the sagittal image plane curvature. Figure 6B and Figure 6D The distortion curves of the optical imaging lens of Embodiment 3 are respectively shown at the aperture values of 1.46 and 2.05, which represent the distortion magnitude values corresponding to different image heights. According to 6A to 6D it can be seen that the optical imaging lens given in Embodiment 3 can achieve good imaging quality.

[0109] Example 4

[0110] The following refers to 7A to 8D to describe the optical imaging lens according to Embodiment 4 of the present application. Figure 7A and Figure 7B respectively show the schematic structural diagrams of the optical imaging lens according to Embodiment 4 of the present application at the aperture values of 1.46 and 2.05.

[0111] As Figure 7A and Figure 7B shown, the optical imaging lens sequentially includes, from the object side to the image side: a variable aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an imaging surface S19.

[0112] The first lens E1 has a positive focal power, its object side surface S1 is a convex surface, and its image side surface S2 is a concave surface. The second lens E2 has a negative focal power, its object side surface S3 is a convex surface, and its image side surface S4 is a concave surface. The third lens E3 has a positive focal power, its object side surface S5 is a convex surface, and its image side surface S6 is a concave surface. The fourth lens E4 has a negative focal power, its object side surface S7 is a convex surface, and its image side surface S8 is a concave surface. The fifth lens E5 has a negative focal power, its object side surface S9 is a convex surface, and its image side surface S10 is a concave surface. The sixth lens E6 has a negative focal power, its object side surface S11 is a convex surface, and its image side surface S12 is a concave surface. The seventh lens E7 has a positive focal power, its object side surface S13 is a convex surface, and its image side surface S14 is a concave surface. The eighth lens E8 has a negative focal power, its object side surface S15 is a convex surface, and its image side surface S16 is a concave surface. The filter E9 has an object side surface S17 and an image side surface S18. The light from the object sequentially passes through the surfaces S1 to S18 and finally forms an image on the imaging surface S19.

[0113] In this example, the total effective focal length f of the optical imaging lens is 5.75 mm, the total length TTL of the optical imaging lens is 7.24 mm, half of the diagonal length of the effective pixel region on the imaging surface of the optical imaging lens ImgH is 5.38 mm, the minimum value FNOmin of the F-number of the optical imaging lens is 1.46, and the maximum value FNOmax of the F-number of the optical imaging lens is 2.05. When the F-number takes the minimum value, the relative aperture of the optical imaging lens is the largest; when the F-number takes the maximum value, the relative aperture of the optical imaging lens is the smallest.

[0114] Table 7 shows the basic parameter table of the optical imaging lens of Embodiment 4. Among them, the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm). Tables 8-1 and 8-2 show the high-order term coefficients of each aspherical mirror surface that can be used in Embodiment 4. Among them, each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0115]

[0116] Table 7

[0117]

[0118] Table 8-1

[0119]

[0120] Table 8-2

[0121] Figure 8A and Figure 8C respectively show the astigmatism curves of the optical imaging lens of Embodiment 4 when the aperture values are 1.46 and 2.05, which represent the meridional image plane curvature and the sagittal image plane curvature. Figure 8B and Figure 8D respectively show the distortion curves of the optical imaging lens of Embodiment 4 when the aperture values are 1.46 and 2.05, which represent the distortion magnitude values corresponding to different image heights. According to Figures 8A to 8D it can be seen that the optical imaging lens given in Embodiment 4 can achieve good imaging quality.

[0122] Example 5

[0123] The following refers to 9A to 10D to describe the optical imaging lens according to Embodiment 5 of the present application. Figure 9A and Figure 9B respectively show the structural schematic diagrams of the optical imaging lens according to Embodiment 5 of the present application when the aperture values are 1.47 and 2.05.

[0124] As Figure 9A and Figure 9B shown, the optical imaging lens sequentially includes, from the object side to the image side: an iris diaphragm STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an imaging surface S19.

[0125] The first lens E1 has a positive optical power, its object side S1 is convex, and its image side S2 is concave. The second lens E2 has a negative optical power, its object side S3 is convex, and its image side S4 is concave. The third lens E3 has a positive optical power, its object side S5 is convex, and its image side S6 is concave. The fourth lens E4 has a negative optical power, its object side S7 is convex, and its image side S8 is concave. The fifth lens E5 has a positive optical power, its object side S9 is convex, and its image side S10 is concave. The sixth lens E6 has a positive optical power, its object side S11 is convex, and its image side S12 is concave. The seventh lens E7 has a positive optical power, its object side S13 is convex, and its image side S14 is concave. The eighth lens E8 has a negative optical power, its object side S15 is concave, and its image side S16 is concave. The filter E9 has an object side S17 and an image side S18. Light from the object sequentially passes through the surfaces S1 to S18 and finally forms an image on the imaging surface S19.

[0126] In this example, the total effective focal length f of the optical imaging lens is 5.75 mm, the total length TTL of the optical imaging lens is 7.24 mm, half of the diagonal length of the effective pixel region on the imaging surface of the optical imaging lens is ImgH = 5.38 mm, the minimum value FNOmin of the F-number of the optical imaging lens is 1.47, and the maximum value FNOmax of the F-number of the optical imaging lens is 2.05. When the F-number takes the minimum value, the relative aperture of the optical imaging lens is the largest; when the F-number takes the maximum value, the relative aperture of the optical imaging lens is the smallest.

[0127] Table 9 shows the basic parameter table of the optical imaging lens of Example 5, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm). Tables 10-1 and 10-2 show the high-order term coefficients for each aspherical mirror surface that can be used in Example 5, where each aspherical surface type can be defined by the formula (1) given in Example 1 above.

[0128]

[0129] Table 9

[0130]

[0131] Table 10-1

[0132]

[0133] Table 10-2

[0134] Figure 10A and Figure 10C respectively show the astigmatism curves of the optical imaging lens of Example 5 when the aperture value is 1.47 and 2.05, which represent the meridional image plane curvature and the sagittal image plane curvature. Figure 10B and Figure 10D The distortion curves of the optical imaging lens of Embodiment 5 are respectively shown at f - numbers of 1.47 and 2.05, which represent the distortion magnitude values corresponding to different image heights. According to 10A to 10D it can be seen that the optical imaging lens given in Embodiment 5 can achieve good imaging quality.

[0135] Example 6

[0136] The following refers to 11A to 12D the optical imaging lens according to Embodiment 6 of the present application. Figure 11A and Figure 11B respectively show the schematic structural diagrams of the optical imaging lens according to Embodiment 6 of the present application at f - numbers of 1.46 and 4.00.

[0137] As Figure 11A and Figure 11B shown, the optical imaging lens sequentially includes, from the object side to the image side: a variable aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an imaging surface S19.

[0138] The first lens E1 has a positive focal power, its object surface S1 is convex, and its image surface S2 is concave. The second lens E2 has a negative focal power, its object surface S3 is convex, and its image surface S4 is concave. The third lens E3 has a positive focal power, its object surface S5 is convex, and its image surface S6 is concave. The fourth lens E4 has a negative focal power, its object surface S7 is convex, and its image surface S8 is concave. The fifth lens E5 has a positive focal power, its object surface S9 is convex, and its image surface S10 is concave. The sixth lens E6 has a negative focal power, its object surface S11 is convex, and its image surface S12 is concave. The seventh lens E7 has a positive focal power, its object surface S13 is convex, and its image surface S14 is concave. The eighth lens E8 has a negative focal power, its object surface S15 is convex, and its image surface S16 is concave. The filter E9 has an object surface S17 and an image surface S18. Light from an object sequentially passes through the surfaces S1 to S18 and finally forms an image on the imaging surface S19.

[0139] In this example, the total effective focal length f of the optical imaging lens is 5.75 mm, the total length TTL of the optical imaging lens is 7.24 mm, half of the diagonal length of the effective pixel region on the imaging surface of the optical imaging lens ImgH is 5.38 mm, the minimum value FNOmin of the F - number of the optical imaging lens is 1.46, and the maximum value FNOmax of the F - number of the optical imaging lens is 4.00. When the F - number takes the minimum value, the relative aperture of the optical imaging lens is the largest; when the F - number takes the maximum value, the relative aperture of the optical imaging lens is the smallest.

[0140] Table 11 shows the basic parameter table of the optical imaging lens of Embodiment 6. Among them, the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm). Tables 12-1 and 12-2 show the high-order term coefficients of each aspherical mirror surface that can be used in Embodiment 6. Among them, each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0141]

[0142] Table 11

[0143]

[0144] Table 12-1

[0145]

[0146] Table 12-2

[0147] Figure 12A and Figure 12C respectively show the astigmatism curves of the optical imaging lens of Embodiment 6 when the aperture values are 1.46 and 4.00, which represent the meridional image plane curvature and the sagittal image plane curvature. Figure 12B and Figure 12D respectively show the distortion curves of the optical imaging lens of Embodiment 6 when the aperture values are 1.46 and 4.00, which represent the distortion magnitude values corresponding to different image heights. According to 12A to 12D it can be seen that the optical imaging lens given in Embodiment 6 can achieve good imaging quality.

[0148] In summary, Embodiments 1 to 6 respectively satisfy the relationships shown in Table 13.

[0149]

[0150] Table 13

[0151] This application also provides an imaging device, and its electronic photosensitive element can be a charge-coupled device (CCD) or a complementary metal-oxide-semiconductor element (CMOS). The imaging device can be an independent imaging device such as a digital camera, or an imaging module integrated on a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens described above.

[0152] The above description is only a preferred embodiment of the present application and an explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the technical solutions formed by mutually replacing the above features with the technical features (but not limited to) disclosed in the present application that have similar functions.

Claims

1. An optical imaging lens, characterized in that: Along the optical axis from the object side to the image side, they include: Variable aperture; The first lens has positive refractive power, its object-side surface is convex and its image-side surface is concave; a second lens having optical power, wherein the object-side surface is convex and the image-side surface is concave; a third lens having optical power, the object-side surface of which is convex and the image-side surface of which is concave; a fourth lens element having optical power, the object-side surface of which is convex and the image-side surface of which is concave; a fifth lens having optical power, the object-side surface of which is convex and the image-side surface of which is concave; a sixth lens having optical power, wherein the object-side surface is convex and the image-side surface is concave; a seventh lens element having positive optical power, whose object-side surface is convex and whose image-side surface is concave; and an eighth lens element having negative optical power and a concave image-side surface; The optical powers of the second to sixth lenses are respectively: positive, positive, negative, positive, positive; or negative, negative, negative, positive, negative; or negative, positive, positive, negative, negative; or negative, positive, negative, negative, negative; or negative, positive, negative, positive, positive; or negative, positive, negative, positive, positive; or negative, positive, negative, positive, negative; The optical imaging lens satisfies the following conditions: 1.45≤f123 / f67≤1.66, where f123 is the combined focal length of the first lens, the second lens, and the third lens, and f67 is the combined focal length of the sixth lens and the seventh lens; The number of lenses having optical power in the optical imaging lens is eight.

2. The optical imaging lens according to claim 1, wherein: The effective focal length f1 of the first lens, 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: 0.53≤f1 / (R2-R1)≤4.

64.

3. The optical imaging lens according to claim 1, wherein: A curvature radius R3 of the object-side surface of the second lens and a curvature radius R4 of the image-side surface of the second lens satisfy: 1.0<R3 / R4<1.

9.

4. The optical imaging lens according to claim 1, wherein: A curvature radius R13 of the object-side surface of the seventh lens, a curvature radius R14 of the image-side surface of the seventh lens, and an effective focal length f7 of the seventh lens satisfy: 1.02≤(R14-R13) / f7≤1.

31.

5. The optical imaging lens according to claim 1, wherein: The effective focal length f8 of the eighth lens, the separation distance T78 between the seventh lens and the eighth lens on the optical axis, and the center thickness CT8 of the eighth lens on the optical axis satisfy: -3.40≤f8 / (T78+CT8)≤-3.

29.

6. The optical imaging lens according to claim 1, wherein: The combined focal length f45 of the fourth lens and the fifth lens, the curvature radius R7 of the object side surface of the fourth lens, the curvature radius R8 of the image side surface of the fourth lens, the curvature radius R9 of the object side surface of the fifth lens, and the curvature radius R10 of the image side surface of the fifth lens satisfy: -1.90≤f45 / (R7+R8+R9+R10)≤-0.

48.

7. The optical imaging lens according to claim 1, wherein: A center thickness CT1 of the first lens on the optical axis, a center thickness CT2 of the second lens on the optical axis, a center thickness CT3 of the third lens on the optical axis, an edge thickness ET1 of the first lens, an edge thickness ET2 of the second lens, and an edge thickness ET3 of the third lens satisfy the following: 1.6<(CT1+CT2+CT3) / (ET1+ET2+ET3)≤1.

81.

8. The optical imaging lens according to claim 1, wherein: An edge thickness ET4 of the fourth lens, an edge thickness ET5 of the fifth lens, and an edge thickness ET6 of the sixth lens satisfy the following: 1.14≤(ET4+ET5) / ET6≤1.

91.

9. The optical imaging lens according to claim 1, wherein: The distance SAG71 from the intersection of the object side surface of the seventh lens and the optical axis to the vertex of the effective radius of the object side surface of the seventh lens on the optical axis, the distance SAG72 from the intersection of the image side surface of the seventh lens and the optical axis to the vertex of the effective radius of the image side surface of the seventh lens on the optical axis, and the edge thickness ET7 of the seventh lens satisfy: -2.61≤(SAG71+SAG72) / ET7≤-1.

75.

10. The optical imaging lens according to claim 1, wherein: The distance SAG81 from the intersection of the object side surface of the eighth lens and the optical axis to the effective radius vertex of the object side surface of the eighth lens on the optical axis and the distance SAG82 from the intersection of the image side surface of the eighth lens and the optical axis to the effective radius vertex of the image side surface of the eighth lens on the optical axis satisfy: 1.30≤SAG81 / SAG82≤1.

77.

11. The optical imaging lens according to any one of claims 1 to 10, wherein: The maximum entrance pupil diameter EPDmax of the optical imaging lens and the minimum entrance pupil diameter EPDmin of the optical imaging lens satisfy the following relationship: 1.39≤EPDmax / EPDmin≤2.

74.

12. The optical imaging lens according to any one of claims 2 to 10, wherein: The maximum entrance pupil diameter EPDmax of the optical imaging lens, the minimum entrance pupil diameter EPDmin of the optical imaging lens, and the total effective focal length f of the optical imaging lens satisfy the following: 2.29≤f / (EPDmax-EPDmin)≤5.21.

Images