Optical imaging lens assembly

Abstract

The application discloses an optical imaging lens group, which comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens in sequence from an object side to an image side along an optical axis. The first lens has positive refractive power, the object side surface of which is a convex surface, and the image side surface of which is a concave surface; the second lens has negative refractive power, the image side surface of which is a concave surface; the third lens has positive refractive power, the object side surface of which is a convex surface; the fourth lens has refractive power; the fifth lens has refractive power, the image side surface of which is a concave surface; the sixth lens has refractive power, the object side surface of which is a convex surface, and the image side surface of which is a concave surface; the seventh lens has positive refractive power, the object side surface of which is a convex surface; the eighth lens has refractive power, the image side surface of which is a concave surface; the combined focal length f123 of the first, second and third lenses and the combined focal length f456 of the fourth, fifth and sixth lenses satisfy -4 < f456 / f123 < -1.5; and the number of lenses with refractive power in the optical imaging lens group is eight.

Description

[0001] Divisional application statement

[0002] This application is a divisional application of the Chinese invention patent application with the invention name “Optical Imaging Lens Assembly” and application number 201811424454.6 filed on November 27, 2018. Technical Field

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

[0004] Currently, to meet the requirements of various application scenarios, different types of optical imaging lens systems have gradually emerged on the market. For example, there are telephoto optical lens systems suitable for long-distance imaging, ultra-thin optical lens systems suitable for ultra-thin mobile phone bodies, ultra-wide-angle optical lens systems suitable for wide-angle imaging and applications such as dome projection and in-vehicle security, and large-aperture optical lens systems suitable for clear imaging in low-light conditions. Among them, large-aperture optical imaging lens systems have the following advantages: they facilitate clear imaging in low light conditions and help achieve a small depth of field and a blurred background effect in large aperture shots. These advantages have made them increasingly popular in the mobile phone camera field.

[0005] Due to the large aperture of a large-aperture imaging lens system, its lens diameter and overall length often increase accordingly. Conventional systems using spherical lenses have difficulty achieving large-aperture imaging while maintaining a small lens diameter and overall length. Therefore, how to improve the image clarity of large-aperture imaging lens systems while miniaturizing the system is currently a key issue in this field. Summary of the Invention

[0006] The present application provides an optical imaging lens assembly that is applicable to portable electronic products and can at least solve or partially solve at least one of the above-mentioned shortcomings in the prior art.

[0007] On the one hand, the present application provides an optical imaging lens group, which includes, in order from the object side to the image side along the optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens. The first lens may have positive focal power, and its object-side surface may be convex, and its image-side surface may be concave; the second lens may have negative focal power, and its image-side surface may be concave; the third lens may have positive focal power, and its object-side surface may be convex; the fourth lens has positive focal power or negative focal power; the fifth lens has positive focal power or negative focal power; the sixth lens has positive focal power or negative focal power, and its object-side surface may be convex, and its image-side surface may be concave; the seventh lens may have positive focal power; and the eighth lens has positive focal power or negative focal power. Wherein, the total effective focal length f of the optical imaging lens group and the entrance pupil diameter EPD of the optical imaging lens group may satisfy f / EPD<1.4.

[0008] In one embodiment, the effective focal length f1 of the first lens and half the diagonal length of the effective pixel area on the imaging plane of the optical imaging lens assembly ImgH may satisfy 1<f1 / ImgH<2.

[0009] In one embodiment, a curvature radius R1 of the object-side surface of the first lens and a curvature radius R2 of the image-side surface of the first lens may satisfy 0.1<R1 / R2<0.5.

[0010] In one embodiment, the effective focal length f2 of the second lens and the effective focal length f3 of the third lens may satisfy -1.5<f2 / f3<-0.5.

[0011] In one embodiment, a distance TTL from the object-side surface of the first lens to the imaging surface of the optical imaging lens assembly on the optical axis and a curvature radius R5 of the object-side surface of the third lens may satisfy 1<TTL / R5<3.

[0012] In one embodiment, a curvature radius R11 of the object-side surface of the sixth lens and a curvature radius R12 of the image-side surface of the sixth lens may satisfy 1<R11 / R12<1.5.

[0013] In one embodiment, the center thickness CT1 of the first lens on the optical axis, the center thickness CT4 of the fourth lens on the optical axis, and the center thickness CT5 of the fifth lens on the optical axis may satisfy 1<CT1 / (CT4+CT5)<2.

[0014] In one embodiment, a center thickness CT7 of the seventh lens on the optical axis and a center thickness CT8 of the eighth lens on the optical axis may satisfy 1< CT7 / CT8 <2.

[0015] In one embodiment, the combined focal length f123 of the first lens, the second lens, and the third lens and the combined focal length f456 of the fourth lens, the fifth lens, and the sixth lens may satisfy -4<f456 / f123<-1.5.

[0016] In one embodiment, the sum of the center thicknesses ΣCT of the first to eighth lenses on the optical axis and the sum of the spacing distances ΣAT between any two adjacent lenses from the first to eighth lenses on the optical axis may satisfy 2<ΣCT / ΣAT<2.5.

[0017] On the other hand, the present application also provides an optical imaging lens group, which includes, in order from the object side to the image side along the optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens. The first lens may have positive focal power, and its object-side surface may be convex and its image-side surface may be concave; the second lens may have negative focal power, and its image-side surface may be concave; the third lens may have positive focal power, and its object-side surface may be convex; the fourth lens may have positive focal power or negative focal power; the fifth lens may have positive focal power or negative focal power; the sixth lens may have positive focal power or negative focal power, and its object-side surface may be convex and its image-side surface may be concave; the seventh lens may have positive focal power; and the eighth lens may have positive focal power or negative focal power. The combined focal length f123 of the first, second, and third lenses and the combined focal length f456 of the fourth, fifth, and sixth lenses may satisfy -4<f456 / f123<-1.5.

[0018] On the other hand, the present application also provides an optical imaging lens group, which includes, in order from the object side to the image side along the optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens. The first lens may have positive focal power, and its object-side surface may be convex and its image-side surface may be concave; the second lens may have negative focal power, and its image-side surface may be concave; the third lens may have positive focal power, and its object-side surface may be convex; the fourth lens may have positive focal power or negative focal power; the fifth lens may have positive focal power or negative focal power; the sixth lens may have positive focal power or negative focal power, and its object-side surface may be convex and its image-side surface may be concave; the seventh lens may have positive focal power; and the eighth lens may have positive focal power or negative focal power. The sum of the center thicknesses ∑CT of the first to eighth lenses on the optical axis and the sum of the spacing distances ∑AT between any two adjacent lenses from the first to eighth lenses on the optical axis may satisfy 2<∑CT / ∑AT<2.5.

[0019] The present application adopts eight lenses. By rationally allocating the optical focal length, surface shape, center thickness of each lens, and on-axis spacing between lenses, the above-mentioned optical imaging lens group has at least one beneficial effect of large aperture, miniaturization, and high imaging quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Other features, purposes and advantages of the present application will become more apparent through the following detailed description of non-limiting embodiments in conjunction with the accompanying drawings. In the accompanying drawings:

[0021] Figure 1 1 shows a schematic structural diagram of an optical imaging lens assembly according to Example 1 of the present application;

[0022] Figures 2A to 2D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens assembly of Example 1 are respectively shown;

[0023] Figure 3 1 shows a schematic structural diagram of an optical imaging lens assembly according to Example 2 of the present application;

[0024] Figures 4A to 4D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens assembly of Example 2 are respectively shown;

[0025] Figure 5 1 shows a schematic structural diagram of an optical imaging lens assembly according to Example 3 of the present application;

[0026] 6A to 6D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens assembly of Example 3 are respectively shown;

[0027] Figure 7 1 shows a schematic structural diagram of an optical imaging lens assembly according to Example 4 of the present application;

[0028] Figures 8A to 8D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens assembly of Example 4 are respectively shown;

[0029] Figure 9 1 shows a schematic structural diagram of an optical imaging lens assembly according to Example 5 of the present application;

[0030] 10A to 10D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens assembly of Example 5 are respectively shown;

[0031] Figure 11 1 shows a schematic structural diagram of an optical imaging lens assembly according to Example 6 of the present application;

[0032] 12A to 12D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens assembly of Example 6 are respectively shown;

[0033] Figure 13 1 shows a schematic structural diagram of an optical imaging lens assembly according to Example 7 of the present application;

[0034] 14A to 14D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens assembly of Example 7 are respectively shown;

[0035] Figure 15 1 shows a schematic structural diagram of an optical imaging lens assembly according to Example 8 of the present application;

[0036] 16A to 16D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens assembly of Example 8 are respectively shown;

[0037] Figure 17 1 shows a schematic structural diagram of an optical imaging lens assembly according to Example 9 of the present application;

[0038] 18A to 18D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens assembly of Example 9 are respectively shown;

[0039] Figure 19 1 shows a schematic structural diagram of an optical imaging lens assembly according to Example 10 of the present application;

[0040] 20A to 20D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens assembly of Example 10 are respectively shown;

[0041] Figure 21 1 shows a schematic structural diagram of an optical imaging lens assembly according to Example 11 of the present application;

[0042] 22A to 22D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens assembly of Example 11 are respectively shown;

[0043] Figure 23 1 shows a schematic structural diagram of an optical imaging lens assembly according to Example 12 of the present application;

[0044] 24A to 24D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens group of Example 12 are respectively shown. DETAILED DESCRIPTION

[0045] For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely descriptions of exemplary embodiments of the present application and are not intended to limit the scope of the present application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0046] It should be noted that in this specification, the terms "first," "second," "third," etc., are used solely to distinguish one feature from another and do not limit the features. Thus, the first lens discussed below could also be referred to as the second lens or the third lens without departing from the teachings of this application.

[0047] In the drawings, the thickness, size, and shape of the lenses are slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical and aspherical surfaces shown in the drawings are provided by way of example. That is, the shapes of the spherical and aspherical surfaces are not limited to those shown in the drawings. The drawings are for illustration only and are not drawn strictly to scale.

[0048] In this article, the paraxial region refers to the area near the optical axis. If a lens surface is convex and the location of the convex surface is undefined, it means that the lens surface is convex at least in the paraxial region. If a lens surface is concave and the location of the concave surface is undefined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the 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.

[0049] It should also be understood that the terms "comprises," "including," "having," "includes," and / or "comprising," when used in this specification, indicate the presence of the stated features, elements, and / or components, but do not preclude the presence or addition of one or more other features, elements, components, and / or combinations thereof. In addition, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire list of features rather than modifying the individual elements in the list. In addition, when describing embodiments of the present application, "may" is used to mean "one or more embodiments of the present application." And, the term "exemplary" is intended to refer to an example or illustration.

[0050] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by those skilled in the art to which this application belongs. It should also be understood that terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology and will not be interpreted in an idealized or overly formal sense unless expressly defined as such herein.

[0051] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0052] The features, principles and other aspects of the present application are described in detail below.

[0053] The optical imaging lens assembly according to an exemplary embodiment of the present application may include, for example, 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 sequentially along the optical axis from the object side to the image side. An air gap may be provided between any two adjacent lenses among the first through eighth lenses.

[0054] In an exemplary embodiment, the first lens may have positive optical power, the object-side surface of which may be convex, and the image-side surface of which may be concave; the second lens may have negative optical power, and the image-side surface of which may be concave; the third lens may have positive optical power, and the object-side surface of which may be convex; the fourth lens may have positive optical power or negative optical power; the fifth lens may have positive optical power or negative optical power; the sixth lens may have positive optical power or negative optical power, the object-side surface of which may be convex, and the image-side surface of which may be concave; the seventh lens may have positive optical power; and the eighth lens may have positive optical power or negative optical power.

[0055] In example embodiments, the image-side surface of the fifth lens may be a concave surface.

[0056] In example embodiments, the object-side surface of the seventh lens may be a convex surface.

[0057] In example embodiments, the image-side surface of the eighth lens may be a concave surface.

[0058] In an exemplary embodiment, the optical imaging lens assembly of the present application may satisfy the conditional equation f / EPD < 1.4, where f is the total effective focal length of the optical imaging lens assembly and EPD is the entrance pupil diameter of the optical imaging lens assembly. More specifically, f and EPD may further satisfy 1.1 < f / EPD < 1.4, for example, 1.29 ≤ f / EPD ≤ 1.36. Satisfying the conditional equation f / EPD < 1.4 facilitates large-aperture imaging, facilitating clear imaging in low-light conditions.

[0059] In an exemplary embodiment, the optical imaging lens assembly of the present application may satisfy the conditional equation 1 < f1 / ImgH < 2, where f1 is the effective focal length of the first lens element, and ImgH is half the diagonal length of the effective pixel area on the imaging plane of the optical imaging lens assembly. More specifically, f1 and ImgH may further satisfy 1.3 < f1 / ImgH < 1.9, for example, 1.45 ≤ f1 / ImgH ≤ 1.86. Satisfying the conditional equation 1 < f1 / ImgH < 2 effectively prevents image height from being too small, facilitates chip matching, and improves system chromatic aberration and distortion.

[0060] In an exemplary embodiment, the optical imaging lens assembly of the present application can satisfy the conditional equation: -1.5 < f2 / f3 < -0.5, where f2 is the effective focal length of the second lens element and f3 is the effective focal length of the third lens element. More specifically, f2 and f3 can further satisfy -1.33 ≤ f2 / f3 ≤ -0.88. This rational allocation of the focal power of the second and third lenses can improve chromatic aberration, effectively reduce the overall system length, and facilitate a larger aperture.

[0061] In an exemplary embodiment, the optical imaging lens assembly of the present application may satisfy the conditional equation 0.1 < R1 / R2 < 0.5, where R1 is the radius of curvature of the object-side surface of the first lens element, and R2 is the radius of curvature of the image-side surface of the first lens element. More specifically, R1 and R2 may further satisfy 0.17 ≤ R1 / R2 ≤ 0.43. Satisfying the conditional equation 0.1 < R1 / R2 < 0.5 effectively prevents excessive curvature of the first lens element, facilitates controlling the edge thickness of the first lens element, reduces manufacturing difficulty, and improves chromatic aberration of the optical imaging lens assembly.

[0062] In an exemplary embodiment, the optical imaging lens assembly of the present application may satisfy the conditional equation 1 < TTL / R5 < 3, where TTL is the distance on the optical axis from the object-side surface of the first lens to the imaging surface of the optical imaging lens assembly, and R5 is the radius of curvature of the object-side surface of the third lens. More specifically, TTL and R5 may further satisfy 1.1 < TTL / R5 < 2.7, for example, 1.25 ≤ TTL / R5 ≤ 2.54. Satisfying the conditional equation 1 < TTL / R5 < 3 effectively prevents excessive curvature of the third lens, helps reduce manufacturing difficulties, and facilitates reasonable control of the overall system length.

[0063] In an exemplary embodiment, the optical imaging lens assembly of the present application may satisfy the conditional equation -4 < f456 / f123 < -1.5, where f123 is the combined focal length of the first, second, and third lenses, and f456 is the combined focal length of the fourth, fifth, and sixth lenses. More specifically, f456 and f123 may further satisfy -3.70 ≤ f456 / f123 ≤ -1.95. Under the conditional equation -4 < f456 / f123 < -1.5, the first, second, and third lenses provide the primary optical power, working in conjunction with the fourth, fifth, and sixth lenses to improve chromatic aberration of the lens assembly and enhance image clarity.

[0064] In an exemplary embodiment, the optical imaging lens assembly of the present application may satisfy the conditional equation 1 < R11 / R12 < 1.5, where R11 is the radius of curvature of the object-side surface of the sixth lens element, and R12 is the radius of curvature of the image-side surface of the sixth lens element. More specifically, R11 and R12 may further satisfy 1.03 ≤ R11 / R12 ≤ 1.37. Satisfying the conditional equation 1 < R11 / R12 < 1.5 effectively prevents excessive curvature of the sixth lens element, helps reduce manufacturing difficulties, and effectively controls system chromatic aberration and field curvature.

[0065] In an exemplary embodiment, the optical imaging lens assembly of the present application may satisfy the conditional formula 2<∑CT / ∑AT<2.5, wherein ∑CT is the sum of the center thicknesses of the first lens to the eighth lens on the optical axis, and ∑AT is the sum of the spacing distances between any two adjacent lenses from the first lens to the eighth lens on the optical axis. More specifically, ∑CT and ∑AT may further satisfy 2.01≤∑CT / ∑AT≤2.34. Satisfying the conditional formula 2<∑CT / ∑AT<2.5 is beneficial for controlling the air spacing between each adjacent lens and the total length of the system, reducing the difficulty of processing and assembly, and also helps to ensure that there is sufficient spacing between each adjacent lens so that each lens surface has a higher degree of freedom of variation, thereby improving the ability of the optical imaging lens assembly to correct astigmatism and field curvature.

[0066] In an exemplary embodiment, the optical imaging lens assembly of the present application may satisfy the conditional formula 1 < CT1 / (CT4+CT5) < 2, where CT1 is the center thickness of the first lens on the optical axis, CT4 is the center thickness of the fourth lens on the optical axis, and CT5 is the center thickness of the fifth lens on the optical axis. More specifically, CT1, CT4, and CT5 may further satisfy 1.3 < CT1 / (CT4+CT5) < 1.7, for example, 1.42 ≤ CT1 / (CT4+CT5) ≤ 1.58. Satisfying the conditional formula 1 < CT1 / (CT4+CT5) < 2 can effectively prevent the center thicknesses of the fourth and fifth lenses from being too thin, and can reduce the difficulty of processing and assembly.

[0067] In an exemplary embodiment, the optical imaging lens assembly of the present application may satisfy the conditional equation 1 < CT7 / CT8 < 2, where CT7 is the center thickness of the seventh lens element along the optical axis, and CT8 is the center thickness of the eighth lens element along the optical axis. More specifically, CT7 and CT8 may further satisfy 1.10 ≤ CT7 / CT8 ≤ 1.60. This conditional equation 1 < CT7 / CT8 < 2 effectively avoids a significant difference in center thickness between the seventh and eighth lenses, reduces assembly difficulty, and maintains a consistent lens surface shape. It also effectively corrects field curvature.

[0068] In an exemplary embodiment, the optical imaging lens assembly may further include a stop to improve the imaging quality of the optical imaging lens assembly. Optionally, the stop may be disposed between the object side and the first lens.

[0069] Optionally, the optical imaging lens assembly may further include a filter for correcting color deviation and / or a protective glass for protecting a photosensitive element located on the imaging surface.

[0070] The optical imaging lens assembly according to the above-described embodiment of the present application can utilize multiple lenses, such as the eight lenses described above. By rationally allocating the optical power, surface shape, center thickness of each lens, and the on-axis spacing between lenses, the volume of the optical imaging lens assembly can be effectively reduced, the sensitivity of the optical imaging lens assembly can be reduced, and the processability of the optical imaging lens assembly can be improved, making the optical imaging lens assembly more convenient for production and processing and suitable for use in portable electronic products. The optical imaging lens assembly configured in this manner can also achieve advantageous effects such as large aperture, miniaturization, and high imaging quality.

[0071] 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 and the image side surface of each lens in 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 surface. The characteristic of an aspherical lens is that the curvature changes continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens with a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has a better curvature radius characteristic, and has the advantages of improving distortion aberration and improving astigmatism aberration. After adopting an aspherical lens, the aberration that occurs during imaging can be eliminated as much as possible, thereby improving the imaging quality. Optionally, the object side surface and the image side surface of each lens in 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 can be aspherical surfaces.

[0072] However, those skilled in the art will appreciate that, without departing from the technical solutions claimed in this application, the number of lenses comprising the optical imaging lens assembly can be varied to achieve the various results and advantages described herein. For example, although eight lenses are described as an example in the embodiments, the optical imaging lens assembly is not limited to eight lenses. If desired, the optical imaging lens assembly can also include other numbers of lenses.

[0073] Specific embodiments of the optical imaging lens assembly applicable to the above-mentioned embodiments will be further described below with reference to the accompanying drawings.

[0074] Example 1

[0075] The following reference Figures 1 to 2D The optical imaging lens assembly according to Example 1 of the present application is described. Figure 1 A schematic structural diagram of an optical imaging lens assembly according to Example 1 of the present application is shown.

[0076] like Figure 1 As shown, the optical imaging lens group according to an exemplary embodiment of the present application includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9 and an imaging surface S19.

[0077] The first lens E1 has positive focal power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative focal power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive focal power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has negative focal power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has negative focal power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has negative focal power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive focal power, with its object-side surface S13 being convex and its image-side surface S14 being convex. The eighth lens E8 has negative focal power, with its object-side surface S15 being convex and its image-side surface S16 being concave. The filter E9 has an object-side surface S17 and an image-side surface S18. Light from the object passes through the surfaces S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0078] Table 1 shows the surface type, curvature radius, thickness, material and conic coefficient of each lens of the optical imaging lens group of Example 1, wherein the units of curvature radius and thickness are both millimeters (mm).

[0079]

[0080]

[0081] Table 1

[0082] As can be seen from Table 1, the object-side surface and image-side surface of any lens from the first lens E1 to the eighth lens E8 are all aspherical surfaces. In this embodiment, the surface shape x of each aspherical lens can be defined by, but is not limited to, the following aspherical surface formula:

[0083]

[0084] Wherein, x is the distance vector height of the aspheric surface from the vertex of the aspheric surface at a height of h along the optical axis; c is the paraxial curvature of the aspheric surface, c = 1 / R (i.e., the paraxial curvature c is the reciprocal of the curvature radius R in Table 1 above); k is the cone coefficient (given in Table 1); Ai is the correction coefficient of the i-th order of the aspheric surface. Table 2 below lists the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A50, A51, A52, A53, A54, A55, A56, A57, A58, A59, A60, A61, A71, A72, A73, A74, A75, A80, A81, A9, A10, A11, A12, A13, A14, A15 10 、A 12 、A 14 、A 16 、A 18 and A 20 .

[0085]

[0086]

[0087] Table 2

[0088] Table 3 shows half the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the optical imaging lens assembly in Example 1, the total optical length TTL (i.e., the distance on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S19), the maximum half field of view HFOV, the total effective focal length f of the optical imaging lens assembly, and the effective focal lengths f1 to f8 of each lens.

[0089] ImgH(mm) 3.39 f3(mm) 6.99 TTL(mm) 5.57 f4(mm) -217.72 HFOV(°) 37.0 f5(mm) -33.47 f(mm) 4.33 f6(mm) -23.15 f1(mm) 5.95 f7(mm) 4.31 f2(mm) -8.51 f8(mm) -4.76

[0090] Table 3

[0091] The optical imaging lens assembly in Example 1 satisfies:

[0092] f / EPD=1.29, where f is the total effective focal length of the optical imaging lens assembly, and EPD is the entrance pupil diameter of the optical imaging lens assembly;

[0093] f1 / ImgH=1.76, where f1 is the effective focal length of the first lens element E1, and ImgH is half the diagonal length of the effective pixel area on the imaging surface S19 of the optical imaging lens assembly;

[0094] f2 / f3=-1.22, where f2 is the effective focal length of the second lens element E2, and f3 is the effective focal length of the third lens element E3;

[0095] R1 / R2=0.39, where R1 is the curvature radius of the object-side surface S1 of the first lens element E1, and R2 is the curvature radius of the image-side surface S2 of the first lens element E1;

[0096] TTL / R5=2.25, where TTL is the distance on the optical axis from the object-side surface S1 of the first lens element E1 to the imaging surface S19, and R5 is the radius of curvature of the object-side surface S5 of the third lens element E3;

[0097] f456 / f123=-2.42, where f123 is the combined focal length of the first lens E1, the second lens E2, and the third lens E3, and f456 is the combined focal length of the fourth lens E4, the fifth lens E5, and the sixth lens E6;

[0098] R11 / R12=1.23, where R11 is the curvature radius of the object-side surface S11 of the sixth lens element E6, and R12 is the curvature radius of the image-side surface S12 of the sixth lens element E6;

[0099] ∑CT / ∑AT=2.19, where ∑CT is the sum of the center thicknesses of the first lens E1 to the eighth lens E8 on the optical axis, and ∑AT is the sum of the distances between any two adjacent lenses among the first lens E1 to the eighth lens E8 on the optical axis.

[0100] CT1 / (CT4+CT5)=1.55, where CT1 is the center thickness of the first lens E1 on the optical axis, CT4 is the center thickness of the fourth lens E4 on the optical axis, and CT5 is the center thickness of the fifth lens E5 on the optical axis;

[0101] CT7 / CT8=1.54, where CT7 is the center thickness of the seventh lens E7 on the optical axis, and CT8 is the center thickness of the eighth lens E8 on the optical axis.

[0102] Figure 2A The axial chromatic aberration curve of the optical imaging lens assembly of Example 1 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the lens assembly. Figure 2B The astigmatism curve of the optical imaging lens group of Example 1 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 2C The distortion curve of the optical imaging lens assembly of Example 1 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 2D The chromatic aberration curve of the optical imaging lens group of Example 1 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens group. Figures 2A to 2DIt can be seen that the optical imaging lens assembly provided in Example 1 can achieve good imaging quality.

[0103] Example 2

[0104] The following reference Figures 3 to 4D The optical imaging lens assembly according to Example 2 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to those in Example 1 will be omitted. Figure 3 A schematic structural diagram of an optical imaging lens assembly according to Example 2 of the present application is shown.

[0105] like Figure 3 As shown, the optical imaging lens group according to an exemplary embodiment of the present application includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9 and an imaging surface S19.

[0106] The first lens E1 has positive focal power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative focal power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive focal power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive focal power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has negative focal power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has negative focal power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive focal power, with its object-side surface S13 being convex and its image-side surface S14 being convex. The eighth lens E8 has negative focal power, with its object-side surface S15 being convex and its image-side surface S16 being concave. The filter E9 has an object-side surface S17 and an image-side surface S18. Light from the object passes through the surfaces S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0107] Table 4 shows the surface type, curvature radius, thickness, material and conic coefficient of each lens of the optical imaging lens group of Example 2, wherein the units of curvature radius and thickness are both millimeters (mm).

[0108]

[0109]

[0110] Table 4

[0111] As can be seen from Table 4, in Example 2, both the object-side surface and the image-side surface of any of the first lens element E1 through the eighth lens element E8 are aspherical surfaces. Table 5 shows the high-order coefficients of the various aspherical mirror surfaces that can be used in Example 2, where the surface shape of each aspherical surface can be defined by Formula (1) given in Example 1 above.

[0112] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 6.8034E-03 1.0075E-03 5.7613E-03 -1.5765E-02 1.7623E-02 -1.0867E-02 3.8034E-03 -7.1392E-04 5.5321E-05 S2 2.5749E-02 -1.8294E-02 -1.7042E-02 2.8250E-02 -2.0808E-02 9.9251E-03 -3.0881E-03 5.5631E-04 -4.3482E-05 S3 1.4538E-01 -3.2664E-01 4.2695E-01 -4.2240E-01 3.0218E-01 -1.4510E-01 4.3926E-02 -7.5656E-03 5.6601E-04 S4 -4.2966E-02 2.1296E-01 -5.3235E-01 7.8203E-01 -7.6565E-01 5.0752E-01 -2.1825E-01 5.4738E-02 -6.0227E-03 S5 -6.0927E-02 2.0463E-01 -4.5252E-01 6.8982E-01 -7.4020E-01 5.3665E-01 -2.5187E-01 6.9081E-02 -8.2975E-03 S6 -2.3218E-02 1.6193E-02 -3.1755E-02 6.2035E-02 -1.0277E-01 1.0666E-01 -6.8798E-02 2.4868E-02 -3.7394E-03 S7 -3.0578E-02 4.5676E-03 -1.3918E-01 3.4485E-01 -4.8543E-01 4.1385E-01 -2.1303E-01 6.1287E-02 -7.5732E-03 S8 1.4736E-02 -1.6165E-01 3.5618E-01 -5.6702E-01 5.8523E-01 -3.9180E-01 1.6338E-01 -3.8332E-02 3.8518E-03 S9 1.8806E-02 -1.9567E-01 4.0224E-01 -4.8676E-01 3.7384E-01 -1.8952E-01 6.0843E-02 -1.1189E-02 9.0504E-04 S10 -2.6309E-03 -2.2775E-01 3.7467E-01 -3.4035E-01 1.8609E-01 -5.9059E-02 8.3280E-03 3.6331E-04 -1.7160E-04 S11 9.6429E-02 -2.1061E-01 1.7424E-01 -8.0474E-02 5.4376E-03 1.2631E-02 -6.3678E-03 1.3343E-03 -1.0782E-04 S12 9.4369E-02 -2.1635E-01 2.3417E-01 -1.6860E-01 7.9075E-02 -2.3694E-02 4.3515E-03 -4.4465E-04 1.9320E-05 S13 -3.4461E-02 -7.4697E-02 1.1925E-01 -9.6358E-02 4.4875E-02 -1.2498E-02 2.0516E-03 -1.8260E-04 6.7824E-06 S14 1.4447E-02 -2.0438E-02 3.7394E-02 -3.2467E-02 1.4757E-02 -3.7873E-03 5.5015E-04 -4.2154E-05 1.3244E-06 S15 -3.6662E-01 2.5850E-01 -1.1408E-01 3.8932E-02 -9.5669E-03 1.5215E-03 -1.4532E-04 7.5350E-06 -1.6265E-07 S16 -1.9688E-01 1.3586E-01 -6.7843E-02 2.4149E-02 -6.0801E-03 1.0442E-03 -1.1436E-04 7.0993E-06 -1.8831E-07

[0113] Table 5

[0114] Table 6 gives half the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the optical imaging lens group in Example 2, the total optical length TTL, the maximum half field of view angle HFOV, the total effective focal length f of the optical imaging lens group, and the effective focal lengths f1 to f8 of each lens.

[0115] ImgH(mm) 3.39 f3(mm) 6.25 TTL(mm) 5.61 f4(mm) 800.00 HFOV(°) 36.5 f5(mm) -26.31 f(mm) 4.36 f6(mm) -43.37 f1(mm) 6.22 f7(mm) 4.91 f2(mm) -8.07 f8(mm) -4.72

[0116] Table 6

[0117] Figure 4A The axial chromatic aberration curve of the optical imaging lens assembly of Example 2 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the lens assembly. Figure 4B The astigmatism curve of the optical imaging lens group of Example 2 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 4C The distortion curve of the optical imaging lens assembly of Example 2 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 4D The chromatic aberration curve of the optical imaging lens group of Example 2 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens group. Figures 4A to 4D It can be seen that the optical imaging lens assembly provided in Example 2 can achieve good imaging quality.

[0118] Example 3

[0119] The following reference Figures 5 to 6D An optical imaging lens assembly according to Example 3 of the present application is described. Figure 5 A schematic structural diagram of an optical imaging lens assembly according to Example 3 of the present application is shown.

[0120] like Figure 5 As shown, the optical imaging lens group according to an exemplary embodiment of the present application includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9 and an imaging surface S19.

[0121] The first lens E1 has positive focal power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative focal power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive focal power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has negative focal power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has positive focal power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has negative focal power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive focal power, with its object-side surface S13 being convex and its image-side surface S14 being convex. The eighth lens E8 has negative focal power, with its object-side surface S15 being convex and its image-side surface S16 being concave. The filter E9 has an object-side surface S17 and an image-side surface S18. Light from the object passes through the surfaces S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0122] Table 7 shows the surface type, curvature radius, thickness, material and conic coefficient of each lens of the optical imaging lens group of Example 3, wherein the units of curvature radius and thickness are both millimeters (mm).

[0123]

[0124] Table 7

[0125] As can be seen from Table 7, in Example 3, both the object-side surface and the image-side surface of any of the first lens element E1 through the eighth lens element E8 are aspherical surfaces. Table 8 shows the high-order coefficients of the various aspherical mirror surfaces that can be used in Example 3, where the surface shape of each aspherical surface can be defined by Formula (1) given in Example 1 above.

[0126]

[0127]

[0128] Table 8

[0129] Table 9 gives half the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the optical imaging lens group in Example 3, the total optical length TTL, the maximum half field of view angle HFOV, the total effective focal length f of the optical imaging lens group, and the effective focal lengths f1 to f8 of each lens.

[0130] ImgH(mm) 3.39 f3(mm) 6.65 TTL(mm) 5.61 f4(mm) -130.29 HFOV(°) 36.7 f5(mm) 800.00 f(mm) 4.36 f6(mm) -13.91 f1(mm) 6.11 f7(mm) 4.50 f2(mm) -8.14 f8(mm) -5.03

[0131] Table 9

[0132] Figure 6A The axial chromatic aberration curve of the optical imaging lens assembly of Example 3 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the lens assembly. Figure 6BThe astigmatism curve of the optical imaging lens group of Example 3 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 6C The distortion curve of the optical imaging lens assembly of Example 3 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 6D The chromatic aberration curve of the optical imaging lens group of Example 3 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens group. 6A to 6D It can be seen that the optical imaging lens assembly provided in Example 3 can achieve good imaging quality.

[0133] Example 4

[0134] The following reference Figures 7 to 8D An optical imaging lens assembly according to Example 4 of the present application is described. Figure 7 A schematic structural diagram of an optical imaging lens assembly according to Example 4 of the present application is shown.

[0135] like Figure 7 As shown, the optical imaging lens group according to an exemplary embodiment of the present application includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9 and an imaging surface S19.

[0136] The first lens E1 has positive focal power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative focal power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive focal power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has negative focal power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has negative focal power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive focal power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive focal power, with its object-side surface S13 being convex and its image-side surface S14 being convex. The eighth lens E8 has negative focal power, with its object-side surface S15 being convex and its image-side surface S16 being concave. The filter E9 has an object-side surface S17 and an image-side surface S18. Light from the object passes through the surfaces S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0137] Table 10 shows the surface type, curvature radius, thickness, material and conic coefficient of each lens of the optical imaging lens group of Example 4, wherein the units of curvature radius and thickness are both millimeters (mm).

[0138]

[0139] Table 10

[0140] As can be seen from Table 10, in Example 4, both the object-side surface and the image-side surface of any of the first lens element E1 through the eighth lens element E8 are aspherical surfaces. Table 11 shows the high-order coefficients of the various aspherical mirror surfaces that can be used in Example 4, where the surface shape of each aspherical surface can be defined by Formula (1) given in Example 1 above.

[0141] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 1.1309E-02 -9.3711E-03 2.7693E-02 -4.4818E-02 4.2442E-02 -2.4461E-02 8.3742E-03 -1.5715E-03 1.2364E-04 S2 2.9224E-02 -3.6090E-02 3.2491E-02 -4.4222E-02 4.2173E-02 -2.3910E-02 7.9096E-03 -1.4225E-03 1.0746E-04 S3 1.1213E-01 -2.4576E-01 2.9821E-01 -2.6834E-01 1.6899E-01 -6.6836E-02 1.4868E-02 -1.4805E-03 2.1180E-05 S4 -5.2626E-02 2.3699E-01 -5.8988E-01 9.0753E-01 -9.3950E-01 6.5079E-01 -2.8636E-01 7.1947E-02 -7.8096E-03 S5 -5.6988E-02 1.9988E-01 -4.6127E-01 7.3126E-01 -8.0400E-01 5.8425E-01 -2.6928E-01 7.1534E-02 -8.2789E-03 S6 -1.8541E-02 6.7138E-03 -3.7444E-04 -1.4795E-02 1.6099E-02 -9.8358E-03 -7.7799E-06 2.7023E-03 -7.6103E-04 S7 -3.5806E-02 -4.4276E-03 -3.3534E-02 2.0078E-02 2.9894E-02 -5.7360E-02 3.6849E-02 -1.0192E-02 9.6813E-04 S8 -7.4658E-03 -1.0043E-01 2.5946E-01 -4.6492E-01 5.1903E-01 -3.6783E-01 1.5915E-01 -3.8068E-02 3.8453E-03 S9 -7.2836E-03 -1.9174E-01 5.0970E-01 -7.0092E-01 5.8411E-01 -3.0536E-01 9.5487E-02 -1.5835E-02 1.0074E-03 S10 -3.1758E-03 -3.4789E-01 7.5181E-01 -9.0236E-01 6.8375E-01 -3.3189E-01 9.9222E-02 -1.6516E-02 1.1678E-03 S11 1.4089E-01 -3.9535E-01 5.3446E-01 -4.7912E-01 2.7971E-01 -1.0723E-01 2.5639E-02 -3.3676E-03 1.8047E-04 S12 1.1763E-01 -2.8608E-01 3.3937E-01 -2.5335E-01 1.1876E-01 -3.4966E-02 6.2793E-03 -6.2798E-04 2.6777E-05 S13 -7.8651E-03 -1.0651E-01 1.4898E-01 -1.0875E-01 4.5730E-02 -1.1489E-02 1.6950E-03 -1.3448E-04 4.3930E-06 S14 1.3196E-02 -2.4600E-02 5.6542E-02 -4.8009E-02 2.0785E-02 -5.0984E-03 7.1404E-04 -5.3179E-05 1.6345E-06 S15 -3.7500E-01 2.6674E-01 -1.1906E-01 4.0593E-02 -9.8522E-03 1.5454E-03 -1.4610E-04 7.5350E-06 -1.6265E-07 S16 -1.9746E-01 1.4507E-01 -7.7014E-02 2.8857E-02 -7.5130E-03 1.3066E-03 -1.4249E-04 8.7125E-06 -2.2627E-07

[0142] Table 11

[0143] Table 12 gives half the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the optical imaging lens group in Example 4, the total optical length TTL, the maximum half field of view angle HFOV, the total effective focal length f of the optical imaging lens group, and the effective focal lengths f1 to f8 of each lens.

[0144] ImgH(mm) 3.39 f3(mm) 6.29 TTL(mm) 5.58 f4(mm) -74.01 HFOV(°) 37.2 f5(mm) -22.68 f(mm) 4.32 f6(mm) 194.01 f1(mm) 6.32 f7(mm) 4.62 f2(mm) -8.39 f8(mm) -4.39

[0145] Table 12

[0146] Figure 8A The axial chromatic aberration curve of the optical imaging lens assembly of Example 4 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the lens assembly. Figure 8B The astigmatism curve of the optical imaging lens group of Example 4 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 8C The distortion curve of the optical imaging lens assembly of Example 4 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 8D The chromatic aberration curve of the optical imaging lens group of Example 4 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens group. Figures 8A to 8D It can be seen that the optical imaging lens assembly provided in Example 4 can achieve good imaging quality.

[0147] Example 5

[0148] The following reference Figures 9 to 10D An optical imaging lens assembly according to Example 5 of the present application is described. Figure 9 A schematic structural diagram of an optical imaging lens assembly according to Example 5 of the present application is shown.

[0149] like Figure 9 As shown, the optical imaging lens group according to an exemplary embodiment of the present application includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9 and an imaging surface S19.

[0150] The first lens E1 has positive focal power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative focal power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive focal power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has negative focal power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has negative focal power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has negative focal power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive focal power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The eighth lens E8 has positive focal power, with its object-side surface S15 being convex and its image-side surface S16 being concave. The filter E9 has an object-side surface S17 and an image-side surface S18. Light from the object passes through the surfaces S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0151] Table 13 shows the surface type, curvature radius, thickness, material and conic coefficient of each lens of the optical imaging lens group of Example 5, wherein the units of curvature radius and thickness are both millimeters (mm).

[0152]

[0153]

[0154] Table 13

[0155] As can be seen from Table 13, in Example 5, both the object-side surface and the image-side surface of any of the first lens element E1 through the eighth lens element E8 are aspherical surfaces. Table 14 shows the high-order coefficients of the various aspherical mirror surfaces that can be used in Example 5, where the surface shape of each aspherical surface can be defined by Formula (1) given in Example 1 above.

[0156] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 1.1341E-02 -1.8769E-02 4.2712E-02 -5.6384E-02 4.4795E-02 -2.2080E-02 6.5645E-03 -1.0870E-03 7.6841E-05 S2 9.4355E-03 1.7224E-02 -7.2100E-02 8.9693E-02 -6.6751E-02 3.1891E-02 -9.5570E-03 1.6330E-03 -1.2153E-04 S3 7.2169E-02 -1.2596E-01 1.2278E-01 -1.1330E-01 8.7271E-02 -4.5869E-02 1.5267E-02 -2.9245E-03 2.4627E-04 S4 -3.1018E-02 1.3735E-01 -2.9383E-01 3.7185E-01 -3.1434E-01 1.7837E-01 -6.5817E-02 1.4736E-02 -1.5423E-03 S5 -3.0627E-02 3.8879E-02 2.6959E-02 -1.8127E-01 2.9429E-01 -2.5909E-01 1.2725E-01 -3.1959E-02 3.1739E-03 S6 -1.9582E-02 -9.3712E-03 4.8353E-02 -1.2638E-01 1.8489E-01 -1.6576E-01 8.5306E-02 -2.2727E-02 2.4217E-03 S7 -2.5889E-02 4.6141E-03 -1.0896E-01 2.3723E-01 -3.0942E-01 2.5220E-01 -1.2754E-01 3.6695E-02 -4.5686E-03 S8 2.9682E-04 -9.3471E-02 2.0035E-01 -3.3853E-01 3.6657E-01 -2.5448E-01 1.0775E-01 -2.5120E-02 2.4694E-03 S9 1.3577E-02 -2.3724E-01 5.2717E-01 -6.5024E-01 4.8670E-01 -2.2056E-01 5.4388E-02 -5.2294E-03 -1.2202E-04 S10 6.4355E-02 -5.5528E-01 1.0697E+00 -1.2163E+00 8.8945E-01 -4.1987E-01 1.2279E-01 -2.0098E-02 1.4013E-03 S11 1.5500E-01 -4.5318E-01 6.1667E-01 -5.4848E-01 3.2011E-01 -1.2241E-01 2.8956E-02 -3.7393E-03 1.9641E-04 S12 8.2113E-02 -1.5411E-01 1.3775E-01 -8.0091E-02 2.8903E-02 -6.4583E-03 8.8412E-04 -7.0096E-05 2.5753E-06 S13 -1.6545E-01 2.1710E-01 -1.9741E-01 9.9873E-02 -3.0664E-02 6.1125E-03 -8.1267E-04 6.7772E-05 -2.6727E-06 S14 -1.8675E-01 3.3651E-01 -2.7614E-01 1.2789E-01 -3.6375E-02 6.5408E-03 -7.3294E-04 4.7092E-05 -1.3294E-06 S15 -4.1869E-01 3.7100E-01 -2.0633E-01 7.8233E-02 -1.9638E-02 3.1585E-03 -3.1206E-04 1.7270E-05 -4.1101E-07 S16 -2.2881E-01 1.7325E-01 -9.2388E-02 3.3034E-02 -7.9216E-03 1.2567E-03 -1.2582E-04 7.1580E-06 -1.7548E-07

[0157] Table 14

[0158] Table 15 gives half the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the optical imaging lens group in Example 5, the total optical length TTL, the maximum half field of view angle HFOV, the total effective focal length f of the optical imaging lens group, and the effective focal lengths f1 to f8 of each lens.

[0159] ImgH(mm) 3.39 f3(mm) 7.05 TTL(mm) 5.63 f4(mm) -386.34 HFOV(°) 36.2 f5(mm) -28.91 f(mm) 4.50 f6(mm) -35.62 f1(mm) 5.81 f7(mm) 21.62 f2(mm) -7.98 f8(mm) 999.64

[0160] Table 15

[0161] Figure 10A The axial chromatic aberration curve of the optical imaging lens assembly of Example 5 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the lens assembly. Figure 10BThe astigmatism curve of the optical imaging lens group of Example 5 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 10C The distortion curve of the optical imaging lens assembly of Example 5 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 10D The chromatic aberration curve of the optical imaging lens group of Example 5 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens group. 10A to 10D It can be seen that the optical imaging lens assembly provided in Example 5 can achieve good imaging quality.

[0162] Example 6

[0163] The following reference Figures 11 to 12D An optical imaging lens assembly according to Example 6 of the present application is described. Figure 11 A structural schematic diagram of an optical imaging lens group according to Example 6 of the present application is shown.

[0164] like Figure 11 As shown, the optical imaging lens group according to an exemplary embodiment of the present application includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9 and an imaging surface S19.

[0165] The first lens E1 has positive focal power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative focal power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive focal power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has negative focal power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has negative focal power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has negative focal power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive focal power, with its object-side surface S13 being convex and its image-side surface S14 being convex. The eighth lens E8 has negative focal power, with its object-side surface S15 being convex and its image-side surface S16 being concave. The filter E9 has an object-side surface S17 and an image-side surface S18. Light from the object passes through the surfaces S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0166] Table 16 shows the surface type, curvature radius, thickness, material and conic coefficient of each lens of the optical imaging lens group of Example 6, where the units of curvature radius and thickness are both millimeters (mm).

[0167]

[0168] Table 16

[0169] As can be seen from Table 16, in Example 6, both the object-side surface and the image-side surface of any of the first lens element E1 through the eighth lens element E8 are aspherical surfaces. Table 17 shows the high-order coefficients of the various aspherical mirror surfaces that can be used in Example 6, where the surface shape of each aspherical surface can be defined by Formula (1) given in Example 1 above.

[0170] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 6.2497E-03 5.8948E-03 -1.1493E-02 1.4238E-02 -1.1378E-02 5.5957E-03 -1.6596E-03 2.5511E-04 -1.5154E-05 S2 -1.4352E-02 2.5038E-02 -9.7594E-03 -2.5376E-02 3.6861E-02 -2.3641E-02 8.3275E-03 -1.5584E-03 1.2084E-04 S3 9.8701E-02 -2.7446E-01 4.4187E-01 -4.9277E-01 3.6640E-01 -1.7695E-01 5.3705E-02 -9.3270E-03 7.0583E-04 S4 -2.0283E-02 4.8495E-02 -8.5929E-02 1.1861E-01 -1.4726E-01 1.3173E-01 -7.3119E-02 2.2540E-02 -2.9161E-03 S5 -1.1547E-02 -4.5140E-03 8.7181E-02 -2.6058E-01 3.8107E-01 -3.2609E-01 1.6013E-01 -4.1073E-02 4.2648E-03 S6 -7.8778E-03 -5.8973E-02 2.1384E-01 -4.5162E-01 5.7896E-01 -4.6536E-01 2.2575E-01 -5.9913E-02 6.6813E-03 S7 -2.4313E-02 -4.3686E-02 1.0133E-01 -2.2946E-01 3.1390E-01 -2.6901E-01 1.3988E-01 -4.0160E-02 4.8714E-03 S8 -1.0183E-02 -8.0375E-02 2.0607E-01 -3.6769E-01 3.9390E-01 -2.6575E-01 1.1031E-01 -2.5695E-02 2.5688E-03 S9 2.2094E-05 -1.6607E-01 3.2612E-01 -2.9876E-01 1.0712E-01 3.0019E-02 -4.3830E-02 1.5767E-02 -2.0052E-03 S10 6.6629E-02 -5.4086E-01 1.0089E+00 -1.1174E+00 7.9972E-01 -3.7227E-01 1.0812E-01 -1.7639E-02 1.2256E-03 S11 1.4269E-01 -3.8560E-01 5.0801E-01 -4.5461E-01 2.6989E-01 -1.0571E-01 2.5703E-02 -3.4131E-03 1.8403E-04 S12 8.0786E-02 -1.4692E-01 1.2917E-01 -7.8949E-02 3.1847E-02 -8.3703E-03 1.3843E-03 -1.3048E-04 5.3174E-06 S13 -1.0291E-01 5.8547E-02 -2.8067E-02 1.0445E-03 4.5142E-03 -1.8940E-03 3.4173E-04 -2.8856E-05 8.9965E-07 S14 -6.1800E-03 2.2405E-02 5.1669E-03 -2.2762E-02 1.4703E-02 -4.4887E-03 7.2986E-04 -6.0987E-05 2.0631E-06 S15 -3.8784E-01 3.0451E-01 -1.6059E-01 6.3836E-02 -1.7314E-02 2.9710E-03 -3.0605E-04 1.7270E-05 -4.1101E-07 S16 -1.9921E-01 1.4290E-01 -7.4573E-02 2.7005E-02 -6.7466E-03 1.1428E-03 -1.2423E-04 7.7248E-06 -2.0681E-07

[0171] Table 17

[0172] Table 18 gives half the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the optical imaging lens group in Example 6, the total optical length TTL, the maximum half field of view angle HFOV, the total effective focal length f of the optical imaging lens group, and the effective focal lengths f1 to f8 of each lens.

[0173] ImgH(mm) 3.39 f3(mm) 8.11 TTL(mm) 5.59 f4(mm) -24.07 HFOV(°) 37.0 f5(mm) -47.82 f(mm) 4.32 f6(mm) -24.81 f1(mm) 5.36 f7(mm) 4.44 f2(mm) -10.74 f8(mm) -4.77

[0174] Table 18

[0175] Figure 12A The axial chromatic aberration curve of the optical imaging lens assembly of Example 6 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the lens assembly. Figure 12B The astigmatism curve of the optical imaging lens group of Example 6 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 12C The distortion curve of the optical imaging lens assembly of Example 6 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 12D The chromatic aberration curve of the optical imaging lens group of Example 6 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens group. 12A to 12D It can be seen that the optical imaging lens assembly provided in Example 6 can achieve good imaging quality.

[0176] Example 7

[0177] The following reference Figures 13 to 14D An optical imaging lens assembly according to Example 7 of the present application is described. Figure 13 A structural schematic diagram of an optical imaging lens group according to Example 7 of the present application is shown.

[0178] like Figure 13 As shown, the optical imaging lens group according to an exemplary embodiment of the present application includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9 and an imaging surface S19.

[0179] The first lens E1 has positive focal power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative focal power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive focal power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive focal power, with its object-side surface S7 being concave and its image-side surface S8 being convex. The fifth lens E5 has negative focal power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive focal power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive focal power, with its object-side surface S13 being convex and its image-side surface S14 being convex. The eighth lens E8 has negative focal power, with its object-side surface S15 being convex and its image-side surface S16 being concave. The filter E9 has an object-side surface S17 and an image-side surface S18. Light from the object passes through the surfaces S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0180] Table 19 shows the surface type, curvature radius, thickness, material and conic coefficient of each lens of the optical imaging lens group of Example 7, where the units of curvature radius and thickness are both millimeters (mm).

[0181]

[0182]

[0183] Table 19

[0184] As can be seen from Table 19, in Example 7, both the object-side surface and the image-side surface of any of the first lens element E1 through the eighth lens element E8 are aspherical surfaces. Table 20 shows the high-order coefficients of the various aspherical mirror surfaces that can be used in Example 7, where the surface shape of each aspherical surface can be defined by Formula (1) given in Example 1 above.

[0185] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 7.9111E-03 -2.6890E-03 1.1137E-02 -1.9523E-02 1.8149E-02 -9.9181E-03 3.1627E-03 -5.5003E-04 3.9753E-05 S2 2.4284E-02 -1.4666E-02 -1.2882E-02 9.2180E-03 3.1198E-03 -5.5673E-03 2.5102E-03 -5.1553E-04 4.1255E-05 S3 1.1056E-01 -2.0540E-01 2.1418E-01 -1.8621E-01 1.2967E-01 -6.3225E-02 1.9817E-02 -3.5889E-03 2.8639E-04 S4 -4.6675E-02 1.9886E-01 -4.2480E-01 5.3249E-01 -4.3975E-01 2.4675E-01 -9.2023E-02 2.0855E-02 -2.1611E-03 S5 -5.4241E-02 1.6034E-01 -3.0951E-01 4.1765E-01 -4.0496E-01 2.7010E-01 -1.2073E-01 3.2813E-02 -3.9991E-03 S6 -1.8077E-02 8.1369E-03 -1.4192E-02 2.4597E-02 -4.0954E-02 3.9631E-02 -2.5521E-02 9.7942E-03 -1.5727E-03 S7 -1.7789E-02 -7.0820E-02 1.3879E-01 -2.4112E-01 2.6425E-01 -1.7420E-01 6.3265E-02 -1.0321E-02 3.2665E-04 S8 7.7441E-02 -4.2194E-01 1.0244E+00 -1.6132E+00 1.6054E+00 -1.0110E+00 3.8962E-01 -8.3707E-02 7.6772E-03 S9 1.0742E-01 -5.3276E-01 1.2168E+00 -1.6684E+00 1.4283E+00 -7.7297E-01 2.5653E-01 -4.7791E-02 3.8457E-03 S10 -1.0211E-02 -2.6521E-01 5.4493E-01 -6.0574E-01 4.0222E-01 -1.5899E-01 3.4675E-02 -3.3558E-03 5.0160E-05 S11 1.2965E-01 -2.9366E-01 3.3656E-01 -2.5776E-01 1.2151E-01 -3.4585E-02 5.3904E-03 -3.1711E-04 -7.2487E-06 S12 1.3003E-01 -2.6369E-01 2.8334E-01 -2.0051E-01 8.9878E-02 -2.5188E-02 4.2798E-03 -4.0349E-04 1.6206E-05 S13 5.7254E-03 -1.0500E-01 1.3051E-01 -8.7564E-02 3.3899E-02 -7.7654E-03 1.0289E-03 -7.1735E-05 1.9854E-06 S14 2.1073E-02 -5.8337E-02 9.1082E-02 -6.3829E-02 2.4609E-02 -5.5830E-03 7.3973E-04 -5.2882E-05 1.5755E-06 S15 -3.9933E-01 2.8681E-01 -1.2756E-01 4.2716E-02 -1.0156E-02 1.5683E-03 -1.4680E-04 7.5350E-06 -1.6265E-07 S16 -2.1395E-01 1.6150E-01 -8.6607E-02 3.2569E-02 -8.4836E-03 1.4745E-03 -1.6072E-04 9.8305E-06 -2.5575E-07

[0186] Table 20

[0187] Table 21 gives half the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the optical imaging lens group in Example 7, the total optical length TTL, the maximum half field of view angle HFOV, the total effective focal length f of the optical imaging lens group, and the effective focal lengths f1 to f8 of each lens.

[0188] ImgH(mm) 3.39 f3(mm) 6.16 TTL(mm) 5.58 f4(mm) 1549.59 HFOV(°) 37.0 f5(mm) -18.01 f(mm) 4.34 f6(mm) 210.99 f1(mm) 6.22 f7(mm) 4.21 f2(mm) -8.09 f8(mm) -3.92

[0189] Table 21

[0190] Figure 14A The axial chromatic aberration curve of the optical imaging lens assembly of Example 7 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the lens assembly. Figure 14BThe astigmatism curve of the optical imaging lens group of Example 7 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 14C The distortion curve of the optical imaging lens assembly of Example 7 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 14D The chromatic aberration curve of the optical imaging lens group of Example 7 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens group. 14A to 14D It can be seen that the optical imaging lens assembly provided in Example 7 can achieve good imaging quality.

[0191] Example 8

[0192] The following reference Figures 15 to 16D An optical imaging lens assembly according to Example 8 of the present application is described. Figure 15 A schematic structural diagram of an optical imaging lens assembly according to Example 8 of the present application is shown.

[0193] like Figure 15 As shown, the optical imaging lens group according to an exemplary embodiment of the present application includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9 and an imaging surface S19.

[0194] The first lens E1 has positive focal power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative focal power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive focal power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive focal power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has negative focal power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive focal power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive focal power, with its object-side surface S13 being convex and its image-side surface S14 being convex. The eighth lens E8 has negative focal power, with its object-side surface S15 being convex and its image-side surface S16 being concave. The filter E9 has an object-side surface S17 and an image-side surface S18. Light from the object passes through the surfaces S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0195] Table 22 shows the surface type, curvature radius, thickness, material and conic coefficient of each lens of the optical imaging lens group of Example 8, where the units of curvature radius and thickness are both millimeters (mm).

[0196]

[0197] Table 22

[0198] As can be seen from Table 22, in Example 8, both the object-side surface and the image-side surface of any of the first lens element E1 through the eighth lens element E8 are aspherical surfaces. Table 23 shows the high-order coefficients of the various aspherical mirror surfaces that can be used in Example 8, where the surface shape of each aspherical surface can be defined by Formula (1) given in Example 1 above.

[0199] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 7.8111E-03 -2.3670E-03 1.0356E-02 -1.8298E-02 1.6955E-02 -9.2044E-03 2.9093E-03 -5.0125E-04 3.5857E-05 S2 2.3553E-02 -1.1093E-02 -2.1294E-02 2.0458E-02 -6.0502E-03 -9.1341E-04 1.0769E-03 -2.7029E-04 2.3371E-05 S3 1.1073E-01 -2.0489E-01 2.1367E-01 -1.8674E-01 1.3134E-01 -6.4923E-02 2.0692E-02 -3.8178E-03 3.1045E-04 S4 -4.7610E-02 2.0345E-01 -4.3405E-01 5.4308E-01 -4.4587E-01 2.4720E-01 -9.0685E-02 2.0220E-02 -2.0722E-03 S5 -5.4512E-02 1.6139E-01 -3.1019E-01 4.1477E-01 -3.9741E-01 2.6195E-01 -1.1624E-01 3.1604E-02 -3.8771E-03 S6 -1.7933E-02 7.4115E-03 -1.0941E-02 1.5634E-02 -2.7033E-02 2.7063E-02 -1.9033E-02 8.0464E-03 -1.3855E-03 S7 -1.7629E-02 -7.0626E-02 1.3124E-01 -2.1800E-01 2.2969E-01 -1.4452E-01 4.8266E-02 -6.1372E-03 -1.7383E-04 S8 7.9256E-02 -4.2217E-01 1.0121E+00 -1.5855E+00 1.5757E+00 -9.9317E-01 3.8346E-01 -8.2568E-02 7.5898E-03 S9 1.0796E-01 -5.2037E-01 1.1804E+00 -1.6195E+00 1.3919E+00 -7.5751E-01 2.5303E-01 -4.7455E-02 3.8428E-03 S10 -1.3754E-02 -2.4851E-01 5.0935E-01 -5.6428E-01 3.7395E-01 -1.4775E-01 3.2274E-02 -3.1464E-03 5.0760E-05 S11 1.3018E-01 -2.9289E-01 3.3200E-01 -2.5167E-01 1.1722E-01 -3.2810E-02 4.9579E-03 -2.5943E-04 -1.0515E-05 S12 1.3379E-01 -2.6865E-01 2.8585E-01 -2.0062E-01 8.9465E-02 -2.5007E-02 4.2462E-03 -4.0065E-04 1.6122E-05 S13 8.6423E-03 -1.0794E-01 1.3126E-01 -8.6585E-02 3.2990E-02 -7.4296E-03 9.6423E-04 -6.5308E-05 1.7242E-06 S14 2.2364E-02 -5.9853E-02 9.2609E-02 -6.4780E-02 2.4959E-02 -5.6602E-03 7.4981E-04 -5.3602E-05 1.5972E-06 S15 -4.0005E-01 2.8802E-01 -1.2829E-01 4.2933E-02 -1.0190E-02 1.5710E-03 -1.4688E-04 7.5350E-06 -1.6265E-07 S16 -2.1455E-01 1.6249E-01 -8.7307E-02 3.2860E-02 -8.5611E-03 1.4880E-03 -1.6219E-04 9.9223E-06 -2.5820E-07

[0200] Table 23

[0201] Table 24 gives half the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the optical imaging lens group in Example 8, the total optical length TTL, the maximum half field of view angle HFOV, the total effective focal length f of the optical imaging lens group, and the effective focal lengths f1 to f8 of each lens.

[0202] ImgH(mm) 3.39 f3(mm) 6.14 TTL(mm) 5.58 f4(mm) 1096.61 HFOV(°) 37.0 f5(mm) -17.20 f(mm) 4.34 f6(mm) 131.08 f1(mm) 6.23 f7(mm) 4.23 f2(mm) -8.12 f8(mm) -3.91

[0203] Table 24

[0204] Figure 16A The axial chromatic aberration curve of the optical imaging lens group of Example 8 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the lens group. Figure 16B The astigmatism curve of the optical imaging lens group of Example 8 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 16C The distortion curve of the optical imaging lens assembly of Example 8 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 16D The chromatic aberration curve of the optical imaging lens group of Example 8 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens group. 16A to 16D It can be seen that the optical imaging lens assembly provided in Example 8 can achieve good imaging quality.

[0205] Example 9

[0206] The following reference Figures 17 to 18D An optical imaging lens assembly according to Example 9 of the present application is described. Figure 17 A schematic structural diagram of an optical imaging lens assembly according to Example 9 of the present application is shown.

[0207] like Figure 17 As shown, the optical imaging lens group according to an exemplary embodiment of the present application includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9 and an imaging surface S19.

[0208] The first lens E1 has positive focal power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative focal power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive focal power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has negative focal power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has negative focal power, with its object-side surface S9 being concave and its image-side surface S10 being concave. The sixth lens E6 has negative focal power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive focal power, with its object-side surface S13 being convex and its image-side surface S14 being convex. The eighth lens E8 has negative focal power, with its object-side surface S15 being convex and its image-side surface S16 being concave. The filter E9 has an object-side surface S17 and an image-side surface S18. Light from the object passes through the surfaces S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0209] Table 25 shows the surface type, curvature radius, thickness, material and conic coefficient of each lens of the optical imaging lens group of Example 9, where the units of curvature radius and thickness are both millimeters (mm).

[0210]

[0211]

[0212] Table 25

[0213] As can be seen from Table 25, in Example 9, both the object-side surface and the image-side surface of any of the first lens element E1 through the eighth lens element E8 are aspherical surfaces. Table 26 shows the high-order coefficients of the various aspherical mirror surfaces that can be used in Example 9, where the surface shape of each aspherical surface can be defined by Formula (1) given in Example 1 above.

[0214] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 6.8184E-03 -3.3108E-03 1.2774E-02 -2.2916E-02 2.2011E-02 -1.2504E-02 4.1501E-03 -7.5175E-04 5.7014E-05 S2 7.0674E-03 2.2899E-03 -1.9307E-02 1.2469E-02 -2.1082E-03 -1.1210E-03 6.3774E-04 -1.2325E-04 8.4538E-06 S3 9.7935E-02 -1.9631E-01 2.2827E-01 -2.0758E-01 1.3772E-01 -6.0798E-02 1.6945E-02 -2.7361E-03 1.9852E-04 S4 -3.7915E-02 1.4567E-01 -2.7136E-01 2.7514E-01 -1.6108E-01 4.5030E-02 1.2936E-03 -3.5114E-03 5.1903E-04 S5 -4.7405E-02 1.3954E-01 -2.9086E-01 4.1199E-01 -3.9654E-01 2.4523E-01 -9.6384E-02 2.3275E-02 -2.7018E-03 S6 -1.9179E-02 -4.5905E-03 3.0267E-02 -8.2492E-02 1.2074E-01 -1.0989E-01 5.6831E-02 -1.4668E-02 1.3976E-03 S7 -4.0256E-02 2.6843E-02 -1.2871E-01 1.8399E-01 -1.4826E-01 6.6234E-02 -1.5124E-02 1.6090E-03 -1.2425E-04 S8 2.0397E-02 -1.9739E-01 5.0384E-01 -9.0386E-01 1.0265E+00 -7.3425E-01 3.1778E-01 -7.5697E-02 7.6070E-03 S9 7.6479E-02 -4.1579E-01 9.9830E-01 -1.4860E+00 1.4252E+00 -8.7953E-01 3.3421E-01 -7.0818E-02 6.3861E-03 S10 2.9440E-02 -3.9707E-01 7.4698E-01 -8.4407E-01 6.2060E-01 -2.9538E-01 8.6901E-02 -1.4232E-02 9.8630E-04 S11 1.1727E-01 -2.6927E-01 3.1374E-01 -2.7665E-01 1.7018E-01 -7.0184E-02 1.7776E-02 -2.4023E-03 1.2847E-04 S12 5.0543E-02 -6.1577E-02 1.6240E-02 5.7151E-03 -7.1839E-03 2.9817E-03 -6.3890E-04 6.9944E-05 -3.0798E-06 S13 -8.4575E-02 3.9484E-02 -3.4243E-03 -1.7443E-02 1.2092E-02 -3.6606E-03 5.7561E-04 -4.5338E-05 1.3888E-06 S14 -1.1761E-02 -5.6264E-04 4.3577E-02 -4.6561E-02 2.2510E-02 -5.9579E-03 8.8707E-04 -6.9713E-05 2.2516E-06 S15 -4.1058E-01 3.2341E-01 -1.7017E-01 6.6799E-02 -1.7825E-02 3.0158E-03 -3.0760E-04 1.7270E-05 -4.1101E-07 S16 -2.1908E-01 1.7128E-01 -9.7227E-02 3.8339E-02 -1.0365E-02 1.8603E-03 -2.0905E-04 1.3181E-05 -3.5348E-07

[0215] Table 26

[0216] Table 27 gives half the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the optical imaging lens group in Example 9, the total optical length TTL, the maximum half field of view angle HFOV, the total effective focal length f of the optical imaging lens group, and the effective focal lengths f1 to f8 of each lens.

[0217] ImgH(mm) 3.39 f3(mm) 6.74 TTL(mm) 5.57 f4(mm) -136.94 HFOV(°) 37.0 f5(mm) -17.51 f(mm) 4.34 f6(mm) -88.43 f1(mm) 5.91 f7(mm) 4.14 f2(mm) -8.59 f8(mm) -4.29

[0218] Table 27

[0219] Figure 18A The axial chromatic aberration curve of the optical imaging lens group of Example 9 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the lens group. Figure 18BThe astigmatism curve of the optical imaging lens group of Example 9 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 18C The distortion curve of the optical imaging lens assembly of Example 9 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 18D The chromatic aberration curve of the optical imaging lens group of Example 9 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens group. 18A to 18D It can be seen that the optical imaging lens assembly provided in Example 9 can achieve good imaging quality.

[0220] Example 10

[0221] The following reference Figures 19 to 20D An optical imaging lens assembly according to Example 10 of the present application is described. Figure 19 A schematic structural diagram of an optical imaging lens assembly according to Example 10 of the present application is shown.

[0222] like Figure 19 As shown, the optical imaging lens group according to an exemplary embodiment of the present application includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9 and an imaging surface S19.

[0223] The first lens E1 has positive focal power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative focal power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive focal power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has negative focal power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has negative focal power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has negative focal power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive focal power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The eighth lens E8 has negative focal power, with its object-side surface S15 being convex and its image-side surface S16 being concave. The filter E9 has an object-side surface S17 and an image-side surface S18. Light from the object passes through the surfaces S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0224] Table 28 shows the surface type, curvature radius, thickness, material and conic coefficient of each lens of the optical imaging lens group of Example 10, where the units of curvature radius and thickness are both millimeters (mm).

[0225]

[0226] Table 28

[0227] As can be seen from Table 28, in Example 10, both the object-side surface and the image-side surface of any of the first lens element E1 through the eighth lens element E8 are aspherical surfaces. Table 29 shows the high-order coefficients of the various aspherical mirror surfaces that can be used in Example 10, where the surface shape of each aspherical surface can be defined by Formula (1) given in Example 1 above.

[0228]

[0229]

[0230] Table 29

[0231] Table 30 gives half the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the optical imaging lens group in Example 10, the total optical length TTL, the maximum half field of view angle HFOV, the total effective focal length f of the optical imaging lens group, and the effective focal lengths f1 to f8 of each lens.

[0232] ImgH(mm) 3.39 f3(mm) 6.98 TTL(mm) 5.55 f4(mm) -705.36 HFOV(°) 37.1 f5(mm) -55.18 f(mm) 4.32 f6(mm) -15.40 f1(mm) 5.89 f7(mm) 4.41 f2(mm) -8.19 f8(mm) -5.16

[0233] Table 30

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

[0235] Example 11

[0236] The following reference Figures 21 to 22D An optical imaging lens assembly according to Example 11 of the present application is described. Figure 21 A structural schematic diagram of the optical imaging lens group according to Example 11 of the present application is shown.

[0237] like Figure 21As shown, the optical imaging lens group according to an exemplary embodiment of the present application includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9 and an imaging surface S19.

[0238] The first lens E1 has positive focal power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative focal power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive focal power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has negative focal power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has negative focal power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has negative focal power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive focal power, with its object-side surface S13 being convex and its image-side surface S14 being convex. The eighth lens E8 has negative focal power, with its object-side surface S15 being concave and its image-side surface S16 being concave. The filter E9 has an object-side surface S17 and an image-side surface S18. Light from the object passes through the surfaces S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0239] Table 31 shows the surface type, curvature radius, thickness, material and conic coefficient of each lens of the optical imaging lens group of Example 11, where the units of curvature radius and thickness are both millimeters (mm).

[0240]

[0241]

[0242] Table 31

[0243] As can be seen from Table 31, in Example 11, both the object-side surface and the image-side surface of any of the first lens element E1 through the eighth lens element E8 are aspherical surfaces. Table 32 shows the high-order coefficients of the various aspherical mirror surfaces that can be used in Example 11, where the surface shape of each aspherical surface can be defined by Formula (1) given in Example 1.

[0244] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 7.8163E-03 -9.1148E-03 2.1327E-02 -2.8386E-02 2.2402E-02 -1.0943E-02 3.2137E-03 -5.2564E-04 3.6490E-05 S2 8.5771E-03 -1.3733E-03 -1.9688E-02 2.1130E-02 -1.2334E-02 4.6027E-03 -1.1270E-03 1.6833E-04 -1.1922E-05 S3 7.1932E-02 -1.2763E-01 1.1003E-01 -6.9737E-02 3.1539E-02 -7.5430E-03 1.0935E-04 3.3347E-04 -4.8977E-05 S4 -2.4427E-02 1.1350E-01 -2.6163E-01 3.5118E-01 -3.1485E-01 1.9083E-01 -7.5256E-02 1.7698E-02 -1.8826E-03 S5 -3.1590E-02 6.1999E-02 -6.6199E-02 2.9417E-03 7.4625E-02 -9.4725E-02 5.3388E-02 -1.4070E-02 1.4037E-03 S6 -1.9581E-02 -7.1753E-03 3.5799E-02 -9.2040E-02 1.3178E-01 -1.1798E-01 6.1358E-02 -1.6753E-02 1.8710E-03 S7 -3.4827E-02 3.4242E-02 -1.5269E-01 2.3441E-01 -2.2303E-01 1.3502E-01 -5.2188E-02 1.2066E-02 -1.2682E-03 S8 -8.4264E-03 -5.2244E-02 1.0102E-01 -2.0159E-01 2.4723E-01 -1.8801E-01 8.5137E-02 -2.0927E-02 2.1538E-03 S9 2.5759E-02 -2.5960E-01 5.2553E-01 -6.1423E-01 4.4670E-01 -2.0289E-01 5.3209E-02 -6.6194E-03 1.8897E-04 S10 7.8165E-02 -5.3277E-01 9.3291E-01 -9.8255E-01 6.7014E-01 -2.9594E-01 8.0991E-02 -1.2368E-02 7.9950E-04 S11 1.1038E-01 -2.9288E-01 3.5901E-01 -2.9122E-01 1.5104E-01 -4.9447E-02 9.2790E-03 -7.7246E-04 7.2252E-06 S12 5.3386E-02 -9.5660E-02 8.1930E-02 -4.6995E-02 1.6036E-02 -3.1899E-03 3.6174E-04 -2.2151E-05 6.2891E-07 S13 -9.6582E-02 4.6475E-02 -1.7897E-02 5.4860E-03 -3.3171E-03 1.6389E-03 -4.1523E-04 5.0730E-05 -2.4004E-06 S14 -2.0166E-03 -1.4770E-02 3.4171E-02 -2.8689E-02 1.3287E-02 -3.6025E-03 5.6199E-04 -4.6548E-05 1.5839E-06 S15 -2.6126E-01 1.8217E-01 -1.0043E-01 4.7343E-02 -1.4753E-02 2.7608E-03 -2.9898E-04 1.7270E-05 -4.1101E-07 S16 -1.4750E-01 1.0771E-01 -6.3118E-02 2.6521E-02 -7.5761E-03 1.4050E-03 -1.6000E-04 1.0097E-05 -2.6907E-07

[0245] Table 32

[0246] Table 33 gives half the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the optical imaging lens group in Example 11, the total optical length TTL, the maximum half field of view angle HFOV, the total effective focal length f of the optical imaging lens group, and the effective focal lengths f1 to f8 of each lens.

[0247]

[0248]

[0249] Table 33

[0250] Figure 22A The axial chromatic aberration curve of the optical imaging lens assembly of Example 11 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the lens assembly. Figure 22B The astigmatism curve of the optical imaging lens group of Example 11 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 22C The distortion curve of the optical imaging lens assembly of Example 11 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 22D The chromatic aberration curve of the optical imaging lens group of Example 11 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens group. 22A to 22D It can be seen that the optical imaging lens assembly provided in Example 11 can achieve good imaging quality.

[0251] Example 12

[0252] The following reference Figures 23 to 24D An optical imaging lens assembly according to Example 12 of the present application is described. Figure 23 A schematic structural diagram of an optical imaging lens assembly according to Example 12 of the present application is shown.

[0253] like Figure 23 As shown, the optical imaging lens group according to an exemplary embodiment of the present application includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9 and an imaging surface S19.

[0254] 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 concave and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has negative optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has negative optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive optical power, with its object-side surface S13 being convex and its image-side surface S14 being convex. The eighth lens E8 has negative optical power, with its object-side surface S15 being convex and its image-side surface S16 being concave. The filter E9 has an object-side surface S17 and an image-side surface S18. Light from the object passes through the surfaces S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0255] Table 34 shows the surface type, curvature radius, thickness, material and conic coefficient of each lens of the optical imaging lens group of Example 12, where the units of curvature radius and thickness are both millimeters (mm).

[0256]

[0257] Table 34

[0258] As can be seen from Table 34, in Example 12, both the object-side surface and the image-side surface of any of the first lens element E1 through the eighth lens element E8 are aspherical surfaces. Table 35 shows the high-order coefficients of the various aspherical mirror surfaces that can be used in Example 12, where the surface shape of each aspherical surface can be defined by Formula (1) given in Example 1 above.

[0259]

[0260]

[0261] Table 35

[0262] Table 36 gives half the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the optical imaging lens group in Example 12, the total optical length TTL, the maximum half field of view angle HFOV, the total effective focal length f of the optical imaging lens group, and the effective focal lengths f1 to f8 of each lens.

[0263] ImgH(mm) 3.38 f3(mm) 7.00 TTL(mm) 5.66 f4(mm) -184.23 HFOV(°) 36.1 f5(mm) -29.22 f(mm) 4.49 f6(mm) -32.62 f1(mm) 5.79 f7(mm) 3.18 f2(mm) -7.85 f8(mm) -3.02

[0264] Table 36

[0265] Figure 24A The axial chromatic aberration curve of the optical imaging lens assembly of Example 12 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the lens assembly. Figure 24B The astigmatism curve of the optical imaging lens group of Example 12 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 24C The distortion curve of the optical imaging lens assembly of Example 12 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 24D The chromatic aberration curve of the optical imaging lens group of Example 12 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens group. 24A to 24D It can be seen that the optical imaging lens assembly provided in Example 12 can achieve good imaging quality.

[0266] In summary, Examples 1 to 12 respectively satisfy the relationships shown in Table 37.

[0267]

[0268] Table 37

[0269] The present application also provides an imaging device, wherein the electronic photosensitive element thereof may be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS). The imaging device may be a standalone imaging device such as a digital camera, or an imaging module integrated into a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens assembly described above.

[0270] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the invention herein is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the inventive concept. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features having similar functions disclosed in this application.

Claims

1. An optical imaging lens assembly, comprising, in order from the object side to the image side along the optical axis: 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 characterized in that: The first lens has positive refractive power, its object side surface is convex, and its image side surface is concave; The second lens has negative optical power and its image side surface is concave; The third lens has positive refractive power and its object side surface is convex; The fourth lens has optical power; The fifth lens has optical power and its image side surface is concave; The sixth lens has optical power, an object-side surface thereof is convex, and an image-side surface thereof is concave; The seventh lens has positive refractive power, and its object side surface is convex; The eighth lens has optical power, and its image side surface is concave; and a combined focal length f123 of the first lens, the second lens, and the third lens and a combined focal length f456 of the fourth lens, the fifth lens, and the sixth lens satisfy -3.70≤f456 / f123≤-2.23; A distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens assembly on the optical axis and a curvature radius R5 of the object side surface of the third lens satisfy 2.22≤TTL / R5≤2.54; The number of lenses having optical power in the optical imaging lens group is eight.

2. The optical imaging lens assembly according to claim 1, wherein: The effective focal length f1 of the first lens and half the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens group satisfy 1.45≤f1 / ImgH<1.

9.

3. The optical imaging lens assembly according to claim 2, wherein: The total effective focal length f of the optical imaging lens group and the entrance pupil diameter EPD of the optical imaging lens group satisfy 1.29≤f / EPD<1.

4.

4. The optical imaging lens assembly according to claim 1, wherein: A curvature radius R1 of the object-side surface of the first lens and a curvature radius R2 of the image-side surface of the first lens satisfy 0.17≤R1 / R2≤0.

43.

5. The optical imaging lens assembly according to claim 1, wherein: The effective focal length f2 of the second lens and the effective focal length f3 of the third lens satisfy -1.33≤f2 / f3≤-0.

88.

6. The optical imaging lens assembly according to claim 1, wherein: A curvature radius R11 of the object-side surface of the sixth lens and a curvature radius R12 of the image-side surface of the sixth lens satisfy 1<R11 / R12≤1.

37.

7. The optical imaging lens assembly according to any one of claims 1 to 6, characterized in that: A sum ΣCT of the center thicknesses of the first to eighth lenses on the optical axis and a sum ΣAT of the spacing between any two adjacent lenses from the first to eighth lenses on the optical axis satisfy 2<ΣCT / ΣAT≤2.

34.

8. The optical imaging lens assembly according to claim 7, wherein: A center thickness CT1 of the first lens on the optical axis, a center thickness CT4 of the fourth lens on the optical axis, and a center thickness CT5 of the fifth lens on the optical axis satisfy 1.42≤CT1 / (CT4+CT5)≤1.

58.

9. The optical imaging lens assembly according to claim 7, wherein: A center thickness CT7 of the seventh lens on the optical axis and a center thickness CT8 of the eighth lens on the optical axis satisfy 1.10≤CT7 / CT8≤1.60.

Images