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 with positive refractive power, the object side of which is a convex surface, and the image side is a concave surface, and the first lens is a glass lens; a second lens with negative refractive power, the object side of which is a convex surface, and the image side is a concave surface; a third lens with negative refractive power, the object side of which is a convex surface, and the image side is a concave surface; a fourth lens with positive refractive power, the object side of which is a convex surface, and the image side is a convex surface; a fifth lens with negative refractive power; a sixth lens with positive refractive power; and a seventh lens with negative refractive power, the image side of which is a concave surface, wherein air gaps exist between each of the first to seventh lenses.

Description

Technical Field

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

[0002] Mobile phone photography is favored by consumers due to its ease of use, low price, and portability, making it a popular choice for photography enthusiasts. When choosing a camera device, users primarily consider performance and price. When prices are comparable or similar, improvements in shooting performance will play a decisive role in product sales.

[0003] In terms of price, plastic lenses have become the main material for mobile phone lenses due to their low cost and light weight. However, plastic materials have poor environmental adaptability, resulting in poor image quality under extreme conditions such as high or low temperatures. A suitable combination of glass and plastic lenses in mobile phone lenses can achieve a balance between product price and image quality. Summary of the Invention

[0004] This application provides an optical imaging lens, which comprises, along the optical axis from the object side to the image side, the following in sequence: a first lens with positive optical power, having a convex object side and a concave image side, and the first lens being a glass lens; a second lens with negative optical power, having a convex object side and a concave image side; a third lens with negative optical power, having a convex object side and a concave image side; a fourth lens with positive optical power, having a convex object side and a convex image side; a fifth lens with negative optical power; a sixth lens with positive optical power; and a seventh lens with negative optical power, having a concave image side, wherein each of the lenses from the first lens to the seventh lens has an air gap.

[0005] In one embodiment, at least one of the object-side surface of the first lens to the image-side surface of the sixth lens is an aspherical mirror.

[0006] In one embodiment, the optical imaging lens satisfies: 1.0 < R14 / (CT1+CT7) < 2.5, where R14 is the radius of curvature of the image side of the seventh lens, CT1 is the center thickness of the first lens on the optical axis, and CT7 is the center thickness of the seventh lens on the optical axis.

[0007] In one embodiment, the optical imaging lens satisfies: -3.0 < R8 / R4 < -1.5, where R4 is the radius of curvature of the image-side surface of the second lens and R8 is the radius of curvature of the image-side surface of the fourth lens.

[0008] In one embodiment, the optical imaging lens satisfies: f / EPD≤1.7, where f is the effective focal length of the optical imaging lens and EPD is the entrance pupil diameter of the optical imaging lens.

[0009] In one embodiment, the optical imaging lens satisfies: 5.0 < CT2 / T34 < 7.0, where CT2 is the center thickness of the second lens on the optical axis, and T34 is the air gap between the third lens and the fourth lens on the optical axis.

[0010] In one embodiment, the optical imaging lens satisfies: 5.5 < R12 / (CT5+CT6) < 8.5, where R12 is the radius of curvature of the image side of the sixth lens, CT5 is the center thickness of the fifth lens on the optical axis, and CT6 is the center thickness of the sixth lens on the optical axis.

[0011] In one embodiment, the optical imaging lens satisfies: -4.0 < f7 / (T12+T34+T67) < -3.0, where f7 is the effective focal length of the seventh lens, T12 is the air gap between the first and second lenses on the optical axis, T34 is the air gap between the third and fourth lenses on the optical axis, and T67 is the air gap between the sixth and seventh lenses on the optical axis.

[0012] In one embodiment, the optical imaging lens satisfies: 1.0 < R9 / R5 < 2.5, where R5 is the radius of curvature of the object side of the third lens and R9 is the radius of curvature of the object side of the fifth lens.

[0013] In one embodiment, the optical imaging lens satisfies: 2.0 < R10 / R1 < 3.0, where R1 is the radius of curvature of the object side of the first lens and R10 is the radius of curvature of the image side of the fifth lens.

[0014] In one embodiment, the optical imaging lens satisfies: 9.5 < f6 / CT6 < 12.0, where f6 is the effective focal length of the sixth lens and CT6 is the center thickness of the sixth lens on the optical axis.

[0015] In one embodiment, the optical imaging lens satisfies: -35.0 < f5 / T45 < -22.0, where f5 is the effective focal length of the fifth lens and T45 is the air gap between the fourth lens and the fifth lens on the optical axis.

[0016] In one embodiment, the optical imaging lens satisfies: 4.5 < (f4 - f1) / (CT1 + CT4) < 8.0, where f1 is the effective focal length of the first lens, f4 is the effective focal length of the fourth lens, CT1 is the center thickness of the first lens on the optical axis, and CT4 is the center thickness of the fourth lens on the optical axis.

[0017] In one embodiment, the optical imaging lens satisfies: 6.0mm < f / tan(Semi-FOV) < 7.5mm, where f is the effective focal length of the optical imaging lens and Semi-FOV is half of the maximum field of view of the optical imaging lens.

[0018] This application employs a seven-element lens architecture. Through the rational allocation of optical power of the first to seventh lenses in the optical imaging lens, the rational design of the surface shape of the first to fourth lenses and the seventh lens, and the setting of air gaps between each lens, the optical imaging lens can meet the imaging requirements. In addition, the optical imaging lens includes a glass lens, which can improve the overall image quality of the system, rationally allocate the focal length of the system, and reduce the aberrations of the optical imaging system. 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 2D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Example 1 are shown respectively.

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

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

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

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

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

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

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

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

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

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] Unless otherwise specified, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should also be understood that terms (e.g., those defined in common dictionaries) shall be interpreted as having the meaning consistent with their meaning in the context of the relevant art and shall not be interpreted in an idealized or overly formal sense unless expressly so specified herein.

[0042] 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.

[0043] The features, principles and other aspects of this application are described in detail below.

[0044] An optical imaging lens according to an exemplary embodiment of this application may include seven lenses with optical power, namely a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. These seven lenses are arranged sequentially along the optical axis from the object side to the image side. An air gap may exist between any two adjacent lenses among the first to seventh lenses.

[0045] In an exemplary embodiment, each of the first, fourth, and sixth lenses can have positive optical power; each of the second, third, fifth, and seventh lenses can have negative optical power; the object-side surfaces of the first to third lenses are all convex, and the image-side surfaces are all concave; the first lens is made of glass; both the object-side and image-side surfaces of the fourth lens are convex; and the image-side surface of the seventh lens is concave. By controlling the optical power and surface shape of the optical imaging lens, the large aperture characteristic of the optical imaging system can be ensured; the inclusion of a glass aspherical surface in the system can improve the image quality of the system, rationally allocate the focal length of the system, and reduce the aberrations of the optical imaging system.

[0046] In an exemplary embodiment, the optical imaging lens according to this application satisfies the following condition: 1.0 < R14 / (CT1+CT7) < 2.5, where R14 is the radius of curvature of the image-side surface of the seventh lens, CT1 is the center thickness of the first lens on the optical axis, and CT7 is the center thickness of the seventh lens on the optical axis. By setting the ratio of the radius of curvature R14 of the image-side surface of the seventh lens to the sum of the center thicknesses CT1 and CT7 of the first lens on the optical axis within a reasonable range, the optical power of the seventh lens can be reasonably allocated, thereby improving the imaging quality of the optical imaging system. More specifically, the ratio of R14 to the sum of CT1 and CT7 can further satisfy: 1.6 < R14 / (CT1+CT7) < 2.1.

[0047] In an exemplary embodiment, -3.0 < R8 / R4 < -1.5, where R4 is the radius of curvature of the image-side surface of the second lens, and R8 is the radius of curvature of the image-side surface of the fourth lens. By controlling the ratio of the radius of curvature R4 of the image-side surface of the second lens to the radius of curvature R8 of the object-side surface of the fourth lens within a certain range, the optical power distribution of the second lens can be ensured to be within a reasonable range, thereby improving the image quality. More specifically, the ratio of R8 to R4 can further satisfy: -2.7 < R8 / R4 < -1.7.

[0048] In an exemplary embodiment, the optical imaging lens according to this application satisfies the following condition: f / EPD ≤ 1.7, where f is the effective focal length of the optical imaging system and EPD is the entrance pupil diameter of the optical imaging system. By controlling the ratio of the focal length f to the entrance pupil diameter EPD of the optical system within a certain range, the large aperture characteristic of the system can be achieved.

[0049] In an exemplary embodiment, the optical imaging lens according to this application satisfies 5.0 < CT2 / T34 < 7.0, where CT2 is the center thickness of the second lens on the optical axis, and T34 is the air gap between the third and fourth lenses on the optical axis. By controlling the ratio of the center thickness CT2 of the second lens on the optical axis to the air gap T34 between the third and fourth lenses on the optical axis, the total length of the system can be ensured to be within a certain range, and the manufacturability of the second lens can be guaranteed. More specifically, the ratio of CT2 to T34 can further satisfy: 5.3 < CT2 / T34 ≤ 6.95.

[0050] In an exemplary embodiment, the optical imaging lens according to this application satisfies: 5.5 < R12 / (CT5+CT6) < 8.5, where R12 is the radius of curvature of the image-side surface of the sixth lens, CT5 is the center thickness of the fifth lens on the optical axis, and CT6 is the center thickness of the sixth lens on the optical axis. By controlling the radius of curvature R12 of the image-side surface of the sixth lens, the center thicknesses CT5 and CT6 of the fifth and sixth lenses on the optical axis to be within a certain range, the optical power distribution of the sixth lens can be ensured to be within a reasonable range, thereby improving the imaging quality of the lens. More specifically, the ratio of R12 to the sum of CT5 and CT6 can further satisfy: 5.9 < R12 / (CT5+CT6) < 8.2.

[0051] In an exemplary embodiment, the optical imaging lens according to this application satisfies: -4.0 < f7 / (T12+T34+T67) < -3.0, where f7 is the effective focal length of the seventh lens, T12 is the air gap between the first and second lenses on the optical axis, T34 is the air gap between the third and fourth lenses on the optical axis, and T67 is the air gap between the sixth and seventh lenses on the optical axis. By controlling the ratio of the effective focal length f7 of the seventh lens to the sum of the air gaps T12, T34, and T67 of the first and second lenses on the optical axis, the optical power of the seventh lens can be reasonably allocated, reducing system aberrations and improving image quality. More specifically, the ratio of f7 to the sum of T12, T34, and T67 can further satisfy: -3.9 < f7 / (T12+T34+T67) < -3.3.

[0052] In an exemplary embodiment, the optical imaging lens according to this application satisfies: 1.0 < R9 / R5 < 2.5, where R5 is the radius of curvature of the object-side surface of the third lens, and R9 is the radius of curvature of the object-side surface of the fifth lens. By controlling the ratio of the radius of curvature R5 of the object-side surface of the third lens to the radius of curvature R9 of the object-side surface of the fifth lens within a certain range, the manufacturability of the third lens of the system can be guaranteed, the aberrations of the system can be reduced, and the image quality can be improved. Further, the ratio of R9 to R5 can satisfy: 1.3 < R9 / R5 < 2.1.

[0053] In an exemplary embodiment, the optical imaging lens according to this application satisfies: 2.0 < R10 / R1 < 3.0, where R1 is the radius of curvature of the object-side surface of the first lens, and R10 is the radius of curvature of the image-side surface of the fifth lens. By controlling the ratio of the radius of curvature R1 of the object-side surface of the first lens to the radius of curvature R10 of the image-side surface of the fifth lens within a certain range, the manufacturability of the first lens of the system can be guaranteed, the aberrations of the system can be reduced, and the image quality can be improved. More specifically, the ratio of R10 to R1 can satisfy: 2.2 < R10 / R1 < 2.9.

[0054] In an exemplary embodiment, the optical imaging lens according to this application satisfies the following condition: 9.5 < f6 / CT6 < 12.0, where f6 is the effective focal length of the sixth lens and CT6 is the center thickness of the sixth lens on the optical axis. By controlling the ratio of the effective focal length f6 of the sixth lens to the center thickness CT6 of the sixth lens on the optical axis within a reasonable range, the manufacturability of the sixth lens in the system can be guaranteed, the aberrations of the system can be reduced, and the image quality can be improved. More specifically, the ratio of f6 to CT6 can satisfy: 9.8 < f6 / CT6 < 11.9.

[0055] In an exemplary embodiment, the optical imaging lens according to this application satisfies: -35.0 < f5 / T45 < -22.0, where f5 is the effective focal length of the fifth lens, and T45 is the air gap between the fourth and fifth lenses on the optical axis. By controlling the effective focal length f5 of the fifth lens and the air gap T45 between the fourth and fifth lenses on the optical axis to be within a reasonable range, the manufacturability of the fifth lens in the system can be guaranteed, the aberrations of the system can be reduced, and the image quality can be improved. More specifically, the ratio of f5 to T45 can satisfy: -33.9 < f5 / T45 < -22.5.

[0056] In an exemplary embodiment, the optical imaging lens according to this application satisfies: 4.5 < (f4 - f1) / (CT1 + CT4) < 8.0, where f1 is the effective focal length of the first lens, f4 is the effective focal length of the fourth lens, CT1 is the center thickness of the first lens on the optical axis, and CT4 is the center thickness of the fourth lens on the optical axis. By controlling the ratio of the difference between the effective focal length f4 of the fourth lens and the effective focal length f1 of the first lens to the difference between the center thickness CT4 of the fourth lens on the optical axis and the center thickness CT1 of the first lens on the optical axis, the system's optical power distribution can be guaranteed, system aberrations can be reduced, and image quality can be improved. More specifically, the ratio of the difference between f4 and f1 to the difference between CT4 and CT1 satisfies: 4.9 < (f4 - f1) / (CT1 + CT4) < 8.0.

[0057] In an exemplary embodiment, the optical imaging lens according to this application satisfies the following condition: 6.0mm < f / tan(Semi-FOV) < 7.5mm, where f is the effective focal length of the optical imaging system, and Semi-FOV is half of the maximum field of view of the optical imaging system. By controlling the ratio of the effective focal length f of the optical imaging system to the tangent function of Semi-FOV (half of the maximum field of view of the optical imaging system), the system's optical power distribution can be guaranteed, aberrations can be reduced, and image quality can be improved. More specifically, the ratio of f to tan(Semi-FOV) satisfies the following condition: 6.2mm < f / tan(Semi-FOV) < 7.5mm.

[0058] In an exemplary embodiment, the effective focal length f of the optical imaging system can be, for example, in the range of 6.3 mm to 6.8 mm; the effective focal length f1 of the first lens can be, for example, in the range of 6.5 mm to 8.5 mm; the effective focal length f2 of the second lens can be, for example, in the range of -48 mm to -20 mm; the effective focal length f3 of the third lens can be, for example, in the range of -36 mm to -25 mm; the effective focal length f4 of the fourth lens can be, for example, in the range of 16 mm to 22 mm; the effective focal length f5 of the fifth lens can be, for example, in the range of -21 mm to -14 mm; the effective focal length f6 of the sixth lens can be, for example, in the range of 5.5 mm to 6.5 mm; and the effective focal length f7 of the seventh lens can be, for example, in the range of -6.0 mm to -5.0 mm.

[0059] In an exemplary embodiment, the total length TTL of the optical imaging lens (i.e., the distance from the object side S1 of the first lens E1 to the optical axis of the imaging surface S17 of the optical imaging lens) can be, for example, in the range of 8.0 mm to 8.4 mm, half the diagonal length ImgH of the effective pixel area on the imaging surface S17 of the optical imaging lens can be, for example, in the range of 6.5 mm to 7.0 mm, and half the maximum field of view (Semi-FOV) of the optical imaging lens can be, for example, in the range of 40° to 47°.

[0060] In an exemplary embodiment, the optical imaging lens according to this application further includes an aperture stop disposed between the object side and the first lens. Optionally, the optical imaging lens may also include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging surface.

[0061] This application proposes an optical imaging lens solution that uses a combination of glass and plastic lenses, possessing characteristics such as a large aperture, high image quality, and low aberration. The optical imaging lens according to the above embodiments of this application can employ multiple lenses, such as the seven lenses described above. By rationally allocating the optical power and surface shape of each lens, the center thickness of each lens, and the on-axis spacing between each lens, incident light can be effectively converged, the overall optical length of the imaging lens can be reduced, and the manufacturability of the imaging lens can be improved, making the optical imaging lens more conducive to production and processing.

[0062] In the embodiments of this application, at least one of the mirror surfaces of each lens is an aspherical mirror surface, that is, at least one mirror surface from the object-side surface of the first lens to the image-side surface of the seventh lens is an aspherical mirror surface. The characteristic of an aspherical lens is that its curvature changes continuously from the center to the periphery of the lens. Unlike a spherical lens, which has a constant curvature from the center to the periphery, an aspherical lens has better curvature radius characteristics, and has the advantages of improving distortion aberrations and astigmatism aberrations. By using an aspherical lens, aberrations occurring during imaging can be eliminated as much as possible, thereby improving image quality. Optionally, at least one of the object-side and image-side surfaces of each of the first, second, third, fourth, fifth, sixth, and seventh lenses is an aspherical mirror surface. Optionally, both the object-side and image-side surfaces of each of the first, second, third, fourth, fifth, sixth, and seventh lenses are aspherical mirror surfaces.

[0063] However, those skilled in the art will understand that the number of lenses constituting the optical imaging lens can be varied to obtain the various results and advantages described herein without departing from the technical solutions claimed in this application. For example, although seven lenses are described as an example in the embodiments, the optical imaging lens is not limited to including seven lenses. If desired, the optical imaging lens may also include other numbers of lenses.

[0064] 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.

[0065] Example 1

[0066] The following is for reference Figures 1 to 2D Describes an optical imaging lens according to Embodiment 1 of this application. Figure 1 A schematic diagram of the structure of an optical imaging lens according to Embodiment 1 of this application is shown.

[0067] like Figure 1 As shown, the optical imaging lens includes, in order from the object side to the image side: aperture STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, filter E8, and imaging surface S17.

[0068] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has 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 negative optical power, with its object-side surface S13 being concave and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through surfaces S1 to S16 and is finally imaged onto the imaging surface S17.

[0069] Table 1 shows the basic parameters of the optical imaging lens of Example 1, where the units for radius of curvature, thickness / distance, and focal length are all millimeters (mm).

[0070]

[0071]

[0072] Table 1

[0073] In this example, the total effective focal length f of the optical imaging lens is 6.67 mm, half of the maximum field of view (Semi-FOV) of the optical imaging lens is 44.5°, half of the diagonal length (ImgH) of the effective pixel area on the imaging plane S17 of the optical imaging lens is 6.71 mm, and the total length (TTL) of the optical imaging lens is 8.19 mm.

[0074] In Embodiment 1, the object-side surface and image-side surface of any one of the first lens E1 to the seventh lens E7 are aspherical surfaces, and the surface shape x of each aspherical lens can be defined using, but is not limited to, the following aspherical formula:

[0075]

[0076] 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 below give the higher-order coefficients A4, A6, A8, A14 that can be used for each aspherical mirror S1-S14 in Example 1. 10 A 12 A 14 A 16 A 18 A 20 A 22 A 24 A 26 A 28 and A 30 .

[0077]

[0078]

[0079] Table 2-1

[0080] Face Number A18 A20 A22 A24 A26 A28 A30 S1 -2.2389E-05 -3.8082E-06 2.5983E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 5.0114E-05 -3.4464E-05 3.8259E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 8.0519E-05 -4.6662E-05 2.6950E-05 -1.5096E-05 9.8822E-06 -5.8885E-06 1.0095E-05 S4 8.2735E-05 -3.4393E-06 2.6265E-05 -5.7767E-06 5.2300E-06 -4.9618E-06 3.5077E-06 S5 -6.4214E-06 2.1122E-05 -1.5564E-05 1.9048E-05 -7.7354E-06 8.1896E-06 -2.3860E-06 S6 -1.4176E-04 9.3225E-05 -9.6331E-05 2.8309E-06 -2.5002E-05 2.0557E-05 3.3714E-06 S7 -1.2139E-04 -2.5716E-05 -1.7833E-04 3.1681E-05 2.5871E-05 1.1028E-05 2.3477E-06 S8 6.6182E-04 2.2921E-04 -1.1780E-04 -8.5928E-05 -1.3553E-04 -5.0961E-05 -5.0835E-05 S9 -1.2975E-03 -7.8096E-04 7.9159E-05 2.1181E-04 1.0648E-04 -2.4193E-05 -5.0564E-05 S10 7.7281E-04 -2.2145E-03 3.2506E-05 2.5343E-04 2.6368E-04 -1.1392E-04 -4.2501E-05 S11 -4.6236E-03 -4.5143E-03 2.8098E-03 6.8304E-04 -9.8828E-05 -6.0599E-04 2.2160E-04 S12 -5.2626E-03 1.2173E-03 -5.3645E-05 -9.3304E-04 -4.0296E-04 5.0013E-05 4.2544E-04 S13 2.3262E-03 -5.8777E-03 4.0874E-03 -1.6301E-03 6.4689E-04 -2.3596E-04 2.8214E-04 S14 1.7688E-02 -8.1997E-03 1.4936E-03 -1.4851E-03 1.6233E-03 -6.2830E-04 6.1243E-04

[0081] Table 2-2

[0082] Figure 2A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 1 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 2B The astigmatism curve of the optical imaging lens of Embodiment 1 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 2C The distortion curve of the optical imaging lens of Example 1 is shown, which represents the distortion magnitude value corresponding to different image heights. Figure 2DThe magnification chromatic aberration curve of the optical imaging lens of Embodiment 1 is shown, which represents the deviation of light at different image heights on the imaging plane after passing through the lens. According to... Figures 2A to 2D It can be seen that the optical imaging lens given in Example 1 can achieve good imaging quality.

[0083] Example 2

[0084] The following is for reference Figures 3 to 4D This paper describes an optical imaging lens according to Embodiment 2 of this application. For the sake of brevity, descriptions similar to those in Embodiment 1 will be omitted in this embodiment and the following embodiments. Figure 3 A schematic diagram of the structure of an optical imaging lens according to Embodiment 2 of this application is shown.

[0085] like Figure 3 As shown, the optical imaging lens includes, in order from the object side to the image side: aperture STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, filter E8, and imaging surface S17.

[0086] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has 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 negative optical power, with its object-side surface S13 being concave and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through surfaces S1 to S16 and is finally imaged onto the imaging surface S17.

[0087] In this example, the total effective focal length f of the optical imaging lens is 6.61 mm, half of the maximum field of view (Semi-FOV) of the optical imaging lens is 44.6°, the total length TTL of the optical imaging lens is 8.23 ​​mm, and half of the diagonal length ImgH of the effective pixel area on the imaging surface S17 of the optical imaging lens is 6.78 mm.

[0088] Table 3 shows the basic parameters of the optical imaging lens of Example 2, wherein the units of radius of curvature, thickness / distance and focal length are millimeters (mm). Tables 4-1 and 4-2 show the higher-order coefficients that can be used for each aspherical mirror in Example 2, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0089]

[0090] Table 3

[0091]

[0092]

[0093] Table 4-1

[0094] Face Number A18 A20 A22 A24 A26 A28 A30 S1 9.3588E-08 8.4710E-09 4.2027E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 3.8855E-05 2.5697E-05 4.0671E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 3.5067E-06 -6.1530E-06 8.2280E-07 -1.0009E-05 7.0310E-07 5.7048E-06 1.0800E-05 S4 2.0714E-05 1.4786E-05 4.5859E-06 5.8713E-06 7.0929E-07 -7.4475E-07 -3.9368E-06 S5 2.5832E-05 -8.8423E-08 9.7512E-06 -1.4777E-06 3.2990E-06 -2.8220E-06 7.5500E-07 S6 -3.3364E-05 1.1068E-05 -4.3491E-05 -1.3244E-05 -2.1194E-06 5.7838E-07 -4.1246E-06 S7 -1.9645E-05 -1.1199E-04 -1.2227E-04 4.4731E-06 1.9377E-05 4.7784E-06 4.4407E-06 S8 7.6191E-04 1.7821E-04 -9.4811E-05 -1.3315E-04 -1.2306E-04 -6.1348E-05 -3.8437E-05 S9 -1.2421E-03 -8.3235E-04 -1.6447E-05 1.6779E-04 1.2501E-04 -4.3340E-06 -2.1967E-05 S10 7.1308E-04 -2.2922E-03 -1.8651E-05 3.6633E-04 2.5374E-04 -1.2069E-04 -4.7176E-05 S11 -4.8301E-03 -3.5979E-03 2.9176E-03 5.2978E-04 -5.3749E-04 -3.9079E-04 2.6916E-04 S12 -5.5951E-03 1.1102E-03 -4.1908E-04 -2.1548E-04 -5.0633E-04 2.3610E-04 1.6995E-04 S13 -7.9475E-04 -3.2503E-03 2.6898E-03 -1.1044E-03 1.9010E-04 7.6261E-05 2.6650E-05 S14 1.3388E-02 -4.0561E-03 1.1549E-04 -1.2289E-03 1.0443E-03 -1.4768E-04 6.2507E-05

[0095] Table 4-2

[0096] Figure 4A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 2 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 4B The astigmatism curve of the optical imaging lens of Embodiment 2 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 4C The distortion curve of the optical imaging lens of Example 2 is shown, which represents the distortion magnitude value corresponding to different image heights. Figure 4D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 2 is shown, which represents the deviation of light at different image heights on the imaging plane after passing through the lens. According to... Figures 4A to 4D It can be seen that the optical imaging lens given in Example 2 can achieve good imaging quality.

[0097] Example 3

[0098] The following is for reference Figures 5 to 6D An optical imaging lens according to Embodiment 3 of this application is described. Figure 5 A schematic diagram of the structure of an optical imaging lens according to Embodiment 3 of this application is shown.

[0099] like Figure 5 As shown, the optical imaging lens includes, in order from the object side to the image side: aperture STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, filter E8, and imaging surface S17.

[0100] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has 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 negative optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through surfaces S1 to S16 and is finally imaged on the imaging surface S17.

[0101] In this example, the total effective focal length f of the optical imaging lens is 6.44 mm, half of the maximum field of view (Semi-FOV) of the optical imaging lens is 45.0°, half of the diagonal length (ImgH) of the effective pixel area on the imaging plane S17 of the optical imaging lens is 6.78 mm, and the total length (TTL) of the optical imaging lens is 8.19 mm.

[0102] Table 5 shows the basic parameters of the optical imaging lens in Example 3, where the units for radius of curvature, thickness / distance, and focal length are millimeters (mm). Tables 6-1 and 6-2 show the higher-order coefficients that can be used for each aspherical mirror in Example 3, where each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0103]

[0104]

[0105] Table 5

[0106] Face Number A4 A6 A8 A10 A12 A14 A16 S1 3.5652E-03 -3.3882E-03 -2.4973E-03 -8.8856E-04 -2.6695E-04 -5.8700E-05 -2.0884E-05 S2 -7.1235E-02 8.1438E-03 -2.8447E-03 -1.4207E-04 -4.1849E-04 -2.0698E-04 -3.5112E-05 S3 -1.6185E-02 2.4628E-02 4.3829E-04 1.3674E-03 1.5244E-04 6.9042E-06 -2.8620E-05 S4 1.4599E-02 1.2351E-02 5.2721E-04 9.8433E-04 3.5084E-04 1.3293E-04 5.6230E-05 S5 -2.4337E-01 -7.3692E-03 5.6555E-04 1.2117E-03 3.2101E-04 1.6949E-04 2.2417E-05 S6 -3.1286E-01 1.3957E-02 6.4665E-03 2.9925E-03 1.2768E-03 2.9496E-04 -1.6215E-04 S7 -1.1688E-01 7.8891E-03 -9.7829E-04 2.8304E-03 2.8199E-03 5.6666E-04 -2.3027E-04 S8 -3.0645E-01 -2.1325E-02 -2.3947E-03 5.9603E-03 7.1831E-03 4.6037E-03 2.1715E-03 S9 -9.1414E-01 -3.5191E-02 2.9598E-02 3.2538E-02 5.4363E-03 1.9079E-03 -1.5968E-03 S10 -1.7934E+00 4.6442E-01 -3.4260E-02 6.0196E-03 -3.1105E-02 1.0514E-02 3.7272E-03 S11 -4.6840E+00 8.1814E-01 9.3969E-02 -7.3194E-02 -4.5164E-02 3.2714E-02 3.2158E-03 S12 -1.7795E+00 -3.7863E-02 1.9018E-01 -1.2102E-01 5.0642E-02 -3.5221E-03 3.4037E-03 S13 -3.0631E+00 1.6000E+00 -7.8290E-01 3.3115E-01 -1.1083E-01 1.8908E-02 -1.2068E-03 S14 -8.4474E+00 1.9346E+00 -5.2558E-01 2.1811E-01 -1.0643E-01 3.8336E-02 -2.7729E-02

[0107] Table 6-1

[0108] Face Number A18 A20 A22 A24 A26 A28 A30 S1 -1.6090E-06 -1.0413E-06 4.3780E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 4.5994E-05 4.4199E-05 1.8464E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 -1.6304E-06 -6.0931E-06 4.0879E-06 -7.1828E-06 -1.4728E-06 -1.2763E-06 4.9264E-06 S4 2.0987E-05 9.1454E-06 3.4018E-06 2.1830E-06 8.9331E-08 1.1737E-06 -1.4206E-07 S5 2.1118E-05 -5.8721E-06 7.5969E-06 -1.9593E-06 4.7538E-06 -2.0755E-06 -6.6203E-08 S6 -3.2835E-05 -2.0739E-06 -3.1344E-05 -9.4797E-06 -4.9600E-07 3.0995E-06 -2.1706E-06 S7 -3.8848E-05 -9.9096E-05 -9.3244E-05 -8.3606E-07 1.5472E-05 7.3692E-06 4.3261E-06 S8 8.0192E-04 2.2452E-04 -8.0712E-05 -1.2066E-04 -1.2597E-04 -6.1166E-05 -4.0486E-05 S9 -1.2065E-03 -7.7526E-04 -5.4629E-05 1.6268E-04 1.3090E-04 1.7744E-05 -2.7944E-06 S10 3.7602E-04 -1.9410E-03 -1.0812E-04 3.8352E-04 1.9275E-04 -9.8925E-05 -5.2224E-05 S11 -5.0804E-03 -2.3566E-03 2.2258E-03 1.1384E-04 -4.7718E-04 -8.1208E-05 2.0588E-04 S12 -5.7434E-03 1.8132E-03 -5.4811E-04 -1.5448E-04 -3.1717E-04 2.1891E-04 7.3593E-05 S13 2.8335E-03 -5.4270E-03 3.2817E-03 -1.0861E-03 -1.5920E-04 2.5458E-04 -1.1015E-04 S14 1.4733E-02 -3.3896E-03 9.7659E-04 -2.1145E-03 9.5732E-04 -1.2204E-04 -5.5981E-05

[0109] Table 6-2

[0110] Figure 6A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 3 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 6B The astigmatism curve of the optical imaging lens of Embodiment 3 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 6C The distortion curve of the optical imaging lens of Example 3 is shown, which represents the distortion magnitude value corresponding to different image heights.Figure 6D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 3 is shown, which represents the deviation of light at different image heights on the imaging plane after passing through the lens. According to... Figures 6A to 6D It can be seen that the optical imaging lens given in Example 3 can achieve good imaging quality.

[0111] Example 4

[0112] The following is for reference Figures 7 to 8D An optical imaging lens according to Embodiment 4 of this application is described. Figure 7 A schematic diagram of the structure of an optical imaging lens according to Embodiment 4 of this application is shown.

[0113] like Figure 7 As shown, the optical imaging lens includes, in order from the object side to the image side: aperture STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, filter E8, and imaging surface S17.

[0114] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has 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 negative optical power, with its object-side surface S13 being concave and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through surfaces S1 to S16 and is finally imaged onto the imaging surface S17.

[0115] In this example, the total effective focal length f of the optical imaging lens is 6.47 mm, half of the maximum field of view (Semi-FOV) of the optical imaging lens is 46.2°, half of the diagonal length (ImgH) of the effective pixel area on the imaging plane S17 of the optical imaging lens is 6.71 mm, and the total length (TTL) of the optical imaging lens is 8.19 mm.

[0116] Table 7 shows the basic parameters of the optical imaging lens of Example 4, where the units for radius of curvature, thickness / distance, and focal length are millimeters (mm). Tables 8-1 and 8-2 show the higher-order coefficients that can be used for each aspherical mirror in Example 4, where each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0117]

[0118]

[0119] Table 7

[0120] Face Number A4 A6 A8 A10 A12 A14 A16 S1 4.3985E-03 -3.2792E-03 -2.4190E-03 -9.4071E-04 -2.9459E-04 -7.7355E-05 -9.3006E-06 S2 -7.4991E-02 8.8666E-03 -2.8035E-03 -3.4396E-04 -3.5075E-04 -1.8343E-04 -2.6209E-05 S3 -2.0344E-02 2.6562E-02 9.4942E-05 1.3403E-03 1.8706E-04 -5.4416E-06 -4.1281E-05 S4 1.0589E-02 1.3250E-02 7.0578E-05 1.0024E-03 3.7990E-04 1.4475E-04 6.1045E-05 S5 -2.4744E-01 -5.6654E-03 9.9954E-05 1.1905E-03 3.4833E-04 1.9604E-04 2.9654E-05 S6 -3.1091E-01 1.5072E-02 5.7363E-03 3.3539E-03 1.0872E-03 3.2500E-04 -1.8325E-04 S7 -1.0990E-01 4.3966E-03 -4.5792E-05 3.1215E-03 2.4339E-03 6.2896E-04 -2.4545E-04 S8 -2.9240E-01 -2.1783E-02 -2.0786E-03 5.8123E-03 6.9149E-03 4.5933E-03 2.1962E-03 S9 -8.8777E-01 -3.3324E-02 2.7801E-02 3.2224E-02 5.6771E-03 2.1350E-03 -1.4862E-03 S10 -1.6633E+00 4.3833E-01 -2.3015E-02 1.3255E-03 -3.0522E-02 9.8561E-03 4.6154E-03 S11 -4.5172E+00 7.8564E-01 9.7620E-02 -7.3743E-02 -4.3286E-02 3.1608E-02 3.7140E-03 S12 -2.0021E+00 3.7208E-03 1.6767E-01 -1.0797E-01 4.3731E-02 -8.0388E-04 3.1516E-03 S13 -1.9428E+00 1.3134E+00 -6.6958E-01 2.8425E-01 -9.1894E-02 1.0179E-02 3.3801E-03 S14 -7.3596E+00 1.6488E+00 -4.0083E-01 1.7029E-01 -7.7874E-02 2.1774E-02 -2.0895E-02

[0121] Table 8-1

[0122]

[0123]

[0124] Table 8-2

[0125] Figure 8A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 4 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 8B The astigmatism curve of the optical imaging lens of Embodiment 4 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 8C The distortion curve of the optical imaging lens of Example 4 is shown, which represents the distortion magnitude value corresponding to different image heights. Figure 8D The magnification chromatic aberration curve of the optical imaging lens of Example 4 is shown, which represents the deviation of light at different image heights on the imaging plane after passing through the lens. According to... Figures 8A to 8D It can be seen that the optical imaging lens given in Example 4 can achieve good imaging quality.

[0126] Example 5

[0127] The following is for reference Figures 9 to 10D An optical imaging lens according to Embodiment 5 of this application is described. Figure 9 A schematic diagram of the structure of an optical imaging lens according to Embodiment 5 of this application is shown.

[0128] like Figure 9 As shown, the optical imaging lens includes, in order from the object side to the image side: aperture STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, filter E8, and imaging surface S17.

[0129] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has 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 negative optical power, with its object-side surface S13 being concave and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through surfaces S1 to S16 and is finally imaged onto the imaging surface S17.

[0130] In this example, the total effective focal length f of the optical imaging lens is 6.48 mm, half of the maximum field of view (Semi-FOV) of the optical imaging lens is 46.0°, half of the diagonal length (ImgH) of the effective pixel area on the imaging plane S17 of the optical imaging lens is 6.74 mm, and the total length (TTL) of the optical imaging lens is 8.21 mm.

[0131] Table 9 shows the basic parameters of the optical imaging lens of Example 5, where the units for radius of curvature, thickness / distance, and focal length are millimeters (mm). Tables 10-1 and 10-2 show the higher-order coefficients that can be used for each aspherical mirror in Example 5, where each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0132]

[0133]

[0134] Table 9

[0135] Face Number A4 A6 A8 A10 A12 A14 A16 S1 3.8078E-03 -3.2019E-03 -2.4922E-03 -9.2796E-04 -3.0977E-04 -7.0345E-05 -1.4862E-05 S2 -7.4284E-02 8.7548E-03 -2.7593E-03 -3.4289E-04 -3.6340E-04 -1.8198E-04 -2.5504E-05 S3 -2.0087E-02 2.6454E-02 1.9831E-04 1.3306E-03 1.9061E-04 -5.3590E-06 -3.9390E-05 S4 1.0751E-02 1.3251E-02 1.3722E-04 9.8206E-04 3.8742E-04 1.4214E-04 6.2937E-05 S5 -2.4885E-01 -5.6976E-03 1.0158E-04 1.1991E-03 3.4556E-04 1.9850E-04 2.8471E-05 S6 -3.1151E-01 1.4963E-02 5.8284E-03 3.3644E-03 1.0774E-03 3.1439E-04 -1.7095E-04 S7 -1.0994E-01 4.3851E-03 -5.4299E-05 3.1713E-03 2.3977E-03 6.3547E-04 -2.3354E-04 S8 -2.9335E-01 -2.1883E-02 -2.0943E-03 5.8450E-03 6.9524E-03 4.6019E-03 2.2038E-03 S9 -8.9152E-01 -3.4203E-02 2.8242E-02 3.2286E-02 5.7491E-03 2.0648E-03 -1.4576E-03 S10 -1.6669E+00 4.3962E-01 -2.2840E-02 1.2340E-03 -3.0619E-02 9.9054E-03 4.6556E-03 S11 -4.5250E+00 7.8523E-01 9.9797E-02 -7.4575E-02 -4.3444E-02 3.1537E-02 3.8471E-03 S12 -1.9871E+00 1.1683E-03 1.6945E-01 -1.0909E-01 4.4155E-02 -9.2638E-04 3.2159E-03 S13 -1.9925E+00 1.3280E+00 -6.7558E-01 2.8654E-01 -9.2310E-02 1.0162E-02 3.3238E-03 S14 -7.4381E+00 1.6637E+00 -4.0668E-01 1.7277E-01 -7.8836E-02 2.2883E-02 -2.1592E-02

[0136] Table 10-1

[0137]

[0138]

[0139] Table 10-2

[0140] Figure 10A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 5 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 10B The astigmatism curve of the optical imaging lens of Embodiment 5 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 10CThe distortion curve of the optical imaging lens of Example 5 is shown, which represents the distortion magnitude value corresponding to different image heights. Figure 10D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 5 is shown, which represents the deviation of light at different image heights on the imaging plane after passing through the lens. According to... Figures 10A to 10D It can be seen that the optical imaging lens given in Example 5 can achieve good imaging quality.

[0141] Example 6

[0142] The following is for reference Figures 11 to 12D An optical imaging lens according to Embodiment 6 of this application is described. Figure 11 A schematic diagram of the structure of an optical imaging lens according to Embodiment 6 of this application is shown.

[0143] like Figure 11 As shown, the optical imaging lens includes, in order from the object side to the image side: aperture STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, filter E8, and imaging surface S17.

[0144] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has 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 negative optical power, with its object-side surface S13 being concave and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through surfaces S1 to S16 and is finally imaged onto the imaging surface S17.

[0145] In this example, the total effective focal length f of the optical imaging lens is 6.63 mm, half of the maximum field of view (Semi-FOV) of the optical imaging lens is 43.0°, half of the diagonal length (ImgH) of the effective pixel area on the imaging plane S17 of the optical imaging lens is 6.74 mm, and the total length (TTL) of the optical imaging lens is 8.22 mm.

[0146] Table 11 shows the basic parameters of the optical imaging lens of Example 6, where the units for radius of curvature, thickness / distance, and focal length are millimeters (mm). Tables 12-1 and 12-2 show the higher-order coefficients that can be used for each aspherical mirror in Example 6, where each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0147]

[0148]

[0149] Table 11

[0150] Face Number A4 A6 A8 A10 A12 A14 A16 S1 -3.3039E-03 -4.7453E-03 -2.3595E-03 -6.9899E-04 -1.7992E-04 -3.3654E-05 -1.3051E-05 S2 -5.7866E-02 7.5085E-03 -3.1641E-03 -1.1235E-04 -5.0237E-04 -1.1270E-04 2.5681E-05 S3 -4.7284E-03 2.3064E-02 9.7295E-04 1.1983E-03 2.6708E-05 -3.9149E-06 -2.7100E-05 S4 1.9074E-02 1.1338E-02 1.3150E-03 8.9974E-04 3.0653E-04 9.8995E-05 4.5245E-05 S5 -2.3347E-01 -8.9966E-03 1.0041E-03 1.2508E-03 2.5247E-04 1.5513E-04 5.3344E-06 S6 -3.3155E-01 1.6280E-02 6.2147E-03 2.8628E-03 1.4057E-03 4.5066E-04 -2.7865E-04 S7 -1.5902E-01 1.7908E-02 -3.7648E-03 2.7690E-03 3.3292E-03 7.3802E-04 -4.0406E-04 S8 -3.2521E-01 -1.7370E-02 -3.5833E-03 6.2118E-03 7.3185E-03 4.5803E-03 2.0493E-03 S9 -9.0325E-01 -3.6117E-02 3.1383E-02 3.1894E-02 4.9258E-03 2.0212E-03 -1.4754E-03 S10 -1.7731E+00 4.5819E-01 -3.5489E-02 8.6540E-03 -3.2323E-02 1.1592E-02 2.7664E-03 S11 -4.9091E+00 8.8485E-01 6.5549E-02 -6.2738E-02 -4.7554E-02 3.4292E-02 1.6304E-03 S12 -2.3972E+00 5.3757E-02 1.5518E-01 -1.0809E-01 4.5980E-02 -2.5807E-03 4.6839E-03 S13 -2.0689E+00 1.3541E+00 -6.9239E-01 2.9789E-01 -1.0108E-01 1.5036E-02 1.3474E-03 S14 -7.4349E+00 1.8152E+00 -4.7466E-01 1.7901E-01 -8.6554E-02 2.7874E-02 -2.2401E-02

[0151] Table 12-1

[0152]

[0153]

[0154] Table 12-2

[0155] Figure 12A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 6 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 12B The astigmatism curve of the optical imaging lens of Embodiment 6 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 12C The distortion curve of the optical imaging lens of Example 6 is shown, which represents the distortion magnitude value corresponding to different image heights. Figure 12D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 6 is shown, which represents the deviation of light at different image heights on the imaging plane after passing through the lens. According to... Figures 12A to 12D It can be seen that the optical imaging lens given in Example 6 can achieve good imaging quality.

[0156] Example 7

[0157] The following is for reference Figures 13 to 14D An optical imaging lens according to Embodiment 7 of this application is described. Figure 13 A schematic diagram of the structure of an optical imaging lens according to Embodiment 7 of this application is shown.

[0158] like Figure 13 As shown, the optical imaging lens includes, in order from the object side to the image side: aperture STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, filter E8, and imaging surface S17.

[0159] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has 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 negative optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through surfaces S1 to S16 and is finally imaged on the imaging surface S17.

[0160] In this example, the total effective focal length f of the optical imaging lens is 6.68 mm, half of the maximum field of view (Semi-FOV) of the optical imaging lens is 42.4°, half of the diagonal length (ImgH) of the effective pixel area on the imaging plane S17 of the optical imaging lens is 6.74 mm, and the total length (TTL) of the optical imaging lens is 8.25 mm.

[0161] Table 13 shows the basic parameters of the optical imaging lens of Example 7, where the units for radius of curvature, thickness / distance, and 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 7, where each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0162]

[0163] Table 13

[0164] Face Number A4 A6 A8 A10 A12 A14 A16 S1 -9.8051E-04 -3.0088E-03 -1.5103E-03 -4.1691E-04 -9.6128E-05 -1.2171E-05 -5.1943E-06 S2 -4.1165E-02 5.7969E-03 -1.2677E-03 3.4149E-04 -6.2604E-05 -2.7663E-05 -1.3087E-05 S3 -5.4113E-03 1.8914E-02 8.9496E-04 9.4525E-04 2.7575E-05 -2.6980E-08 -1.2489E-05 S4 2.1457E-02 1.0526E-02 1.5668E-03 8.6750E-04 2.9228E-04 8.8147E-05 3.9355E-05 S5 -2.4568E-01 -9.3086E-03 1.8749E-03 1.5855E-03 3.6296E-04 1.7693E-04 1.5067E-05 S6 -3.4036E-01 1.6838E-02 7.3394E-03 3.2573E-03 1.4093E-03 4.5468E-04 -3.0648E-04 S7 -1.5899E-01 1.8700E-02 -2.8235E-03 3.3394E-03 3.4105E-03 7.6238E-04 -4.6650E-04 S8 -3.0816E-01 -1.7937E-02 -6.8435E-03 2.7492E-03 4.7393E-03 3.1077E-03 1.4347E-03 S9 -7.6413E-01 -5.3984E-02 6.1121E-03 1.7296E-02 2.0232E-03 2.0171E-03 1.9497E-05 S10 -1.6612E+00 3.7684E-01 -2.3586E-02 2.0359E-02 -2.7592E-02 4.9034E-03 1.4512E-03 S11 -3.8931E+00 4.5299E-01 7.8871E-02 2.0494E-02 -3.8421E-02 3.9216E-03 1.9006E-03 S12 -2.1265E+00 2.2745E-02 1.5045E-01 -1.0306E-01 3.8188E-02 -3.9756E-03 6.1468E-03 S13 -2.6347E+00 1.4850E+00 -7.4659E-01 3.1867E-01 -1.0729E-01 1.7492E-02 -6.0620E-04 S14 -8.1307E+00 1.9730E+00 -5.6024E-01 2.0232E-01 -1.0846E-01 3.6398E-02 -2.5390E-02

[0165] Table 14-1

[0166]

[0167]

[0168] Table 14-2

[0169] Figure 14A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 7 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 14B The astigmatism curve of the optical imaging lens of Embodiment 7 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 14C The distortion curve of the optical imaging lens of Example 7 is shown, which represents the distortion magnitude value corresponding to different image heights.Figure 14D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 7 is shown, which represents the deviation of light at different image heights on the imaging plane after passing through the lens. According to Figures 14A to 14D It can be seen that the optical imaging lens given in Example 7 can achieve good imaging quality.

[0170] Example 8

[0171] The following is for reference Figures 15 to 16D An optical imaging lens according to Embodiment 8 of this application is described. Figure 15 A schematic diagram of the structure of an optical imaging lens according to Embodiment 8 of this application is shown.

[0172] like Figure 15 As shown, the optical imaging lens includes, in order from the object side to the image side: aperture STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, filter E8, and imaging surface S17.

[0173] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has 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 negative optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through surfaces S1 to S16 and is finally imaged on the imaging surface S17.

[0174] In this example, the total effective focal length f of the optical imaging lens is 6.74 mm, half of the maximum field of view (Semi-FOV) of the optical imaging lens is 42.1°, half of the diagonal length (ImgH) of the effective pixel area on the imaging plane S17 of the optical imaging lens is 6.81 mm, and the total length (TTL) of the optical imaging lens is 8.33 mm.

[0175] Table 15 shows the basic parameters of the optical imaging lens of Example 8, wherein the units of radius of curvature, thickness / distance and focal length are millimeters (mm). Tables 16-1 and 16-2 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.

[0176]

[0177] Table 15

[0178]

[0179]

[0180] Table 16-1

[0181] Face Number A18 A20 A22 A24 A26 A28 A30 S1 -5.6627E-07 -2.1110E-06 5.1578E-08 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 9.8605E-07 2.5348E-06 -1.7914E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 1.4223E-05 6.4706E-06 7.1889E-06 9.7262E-07 4.3183E-06 2.3498E-06 3.3809E-06 S4 3.8474E-06 5.8333E-06 -8.6916E-07 3.8784E-06 -2.4539E-06 -3.2715E-06 -5.8779E-06 S5 1.6703E-05 -9.4872E-06 3.1697E-06 -4.5487E-06 3.0479E-06 -2.2071E-06 1.5571E-06 S6 -6.6599E-05 -3.7236E-05 -4.1422E-05 -2.2695E-05 1.2024E-05 3.0357E-06 2.0161E-06 S7 6.2498E-04 2.4633E-04 4.4669E-05 -1.0832E-05 -3.3127E-05 -1.6749E-05 -1.4233E-05 S8 -1.0500E-04 -1.7161E-04 -8.1856E-05 5.9944E-06 3.2035E-05 1.8183E-05 2.9335E-06 S9 1.1866E-03 -6.9984E-04 -3.5188E-04 5.9755E-05 1.0600E-04 1.7494E-05 -2.0777E-05 S10 1.1866E-03 -6.9984E-04 -3.5188E-04 5.9755E-05 1.0600E-04 1.7494E-05 -2.0777E-05 S11 1.7985E-03 -1.5119E-03 -4.4052E-04 3.1750E-04 2.7650E-04 -5.0613E-05 -7.6171E-05 S12 -5.7213E-03 2.0524E-03 -8.4412E-04 1.1180E-04 -5.6020E-04 1.0133E-04 4.5483E-05 S13 1.3105E-03 -6.3587E-03 3.9589E-03 -1.3538E-03 -4.1284E-04 4.0030E-04 -1.9294E-04 S14 1.3272E-02 -8.0109E-03 3.9841E-04 -1.8576E-03 6.2721E-04 -5.6247E-04 -1.0340E-04

[0182] Table 16-2

[0183] Figure 16A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 8 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 16B The astigmatism curve of the optical imaging lens of Embodiment 8 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 16C The distortion curve of the optical imaging lens of Example 8 is shown, which represents the distortion magnitude value corresponding to different image heights. Figure 16D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 8 is shown, which represents the deviation of light at different image heights on the imaging plane after passing through the lens. According to... Figures 16A to 16D It can be seen that the optical imaging lens given in Example 8 can achieve good imaging quality.

[0184] In summary, Examples 1 to 8 respectively satisfy the relationships shown in Table 17.

[0185]

[0186]

[0187] Table 17

[0188] 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.

[0189] 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, sequentially arranged from the object side to the image side along the optical axis include: a first lens with positive refractive power, whose object side surface is convex, whose image side surface is concave, and which is a glass lens; a second lens with negative refractive power, whose object side surface is convex, whose image side surface is concave; a third lens with negative refractive power, whose object side surface is convex, whose image side surface is concave; a fourth lens with positive refractive power, whose object side surface is convex, whose image side surface is convex; a fifth lens with negative refractive power, whose object side surface is convex, whose image side surface is concave; a sixth lens with positive refractive power, whose object side surface is convex, whose image side surface is concave; a seventh lens with negative refractive power, whose image side surface is concave, the optical imaging lens has seven lenses with refractive power; wherein each of the first lens to the seventh lens has an air gap therebetween; the optical imaging lens satisfies: 1.3 < R9 / R5 ≤ 2.02 and 1.69 ≤ R14 / (CT1+CT7) < 2.1, wherein R5 is the curvature radius of the object side surface of the third lens, R9 is the curvature radius of the object side surface of the fifth lens, R14 is the curvature radius of the image side surface of the seventh lens, CT1 is the center thickness of the first lens on the optical axis, and CT7 is the center thickness of the seventh lens on the optical axis. 2.The optical imaging lens according to claim 1, wherein, the optical imaging lens satisfies: -2.61 ≤ R8 / R4 < -1.7, wherein R4 is the curvature radius of the image side surface of the second lens, and R8 is the curvature radius of the image side surface of the fourth lens. 3.The optical imaging lens according to claim 1, wherein, the optical imaging lens satisfies: 1.60 ≤ f / EPD ≤ 1.7, wherein f is the effective focal length of the optical imaging lens, and EPD is the entrance pupil diameter of the optical imaging lens. 4.The optical imaging lens according to claim 2, wherein, the optical imaging lens satisfies: 5.3 < CT2 / T34 ≤ 6.95, wherein CT2 is the center thickness of the second lens on the optical axis, and T34 is the air gap of the third lens and the fourth lens on the optical axis.

5. The optical imaging lens according to claim 1, characterized in that, the optical imaging lens satisfies: 5.9 < R12 / (CT5+CT6) ≤ 8.13, wherein R12 is the curvature radius of the image side surface of the sixth lens, CT5 is the center thickness of the fifth lens on the optical axis, and CT6 is the center thickness of the sixth lens on the optical axis. 6.The optical imaging lens according to claim 1, wherein, the optical imaging lens satisfies: -3.84 ≤ f7 / (T12+T34+T67) < -3.3, wherein f7 is the effective focal length of the seventh lens, T12 is the air gap of the first lens and the second lens on the optical axis, T34 is the air gap of the third lens and the fourth lens on the optical axis, and T67 is the air gap of the sixth lens and the seventh lens on the optical axis. 7.The optical imaging lens according to claim 1, wherein, the optical imaging lens satisfies: 2.2 < R10 / R1 < 2.9, wherein R1 is the curvature radius of the object side surface of the first lens, and R10 is the curvature radius of the image side surface of the fifth lens. 8.The optical imaging lens according to claim 1, wherein, the optical imaging lens satisfies: 9.87 ≤ f6 / CT6 < 11.9, Wherein, f6 is the effective focal length of the sixth lens, CT6 is the center thickness of the sixth lens on the optical axis. 9.The optical imaging lens according to claim 8, wherein, The optical imaging lens satisfies: -33.83≤f5 / T45≤-22.69, Wherein, f5 is the effective focal length of the fifth lens, T45 is the air separation of the fourth lens and the fifth lens on the optical axis. 10.The optical imaging lens according to claim 1, wherein, The optical imaging lens satisfies: 4.97≤(f4-f1) / (CT1+CT4)<8.0, Wherein, f1 is the effective focal length of the first lens, f4 is the effective focal length of the fourth lens, CT4 is the center thickness of the fourth lens on the optical axis.

11. The optical imaging lens according to any one of claims 1-10, wherein, The optical imaging lens satisfies: 6.2mm<f / tan(Semi-FOV)<7.5mm, Wherein, f is the effective focal length of the optical imaging lens, Semi-FOV is half of the maximum field angle of the optical imaging lens.

Images