Photographic lens

Abstract

The present application discloses a photographic lens. The photographic lens sequentially includes, from the object side to the image side along the optical axis: a first lens with a positive focal power; a second lens with a negative focal power; a third lens with a negative focal power; a fourth lens with a positive focal power; and a fifth lens with a focal power. Wherein, the distance BFL on the optical axis from the image side of the fifth lens to the imaging surface of the photographic lens, the distance TD on the optical axis from the object side of the first lens to the image side of the fifth lens, the effective focal length fa of the lens with the smallest dispersion coefficient among the first lens to the fifth lens, and the effective focal length f of the photographic lens satisfy: 0.9 < BFL / TD < 1.1 and 1 < fa / f < 4.

Description

Technical Field

[0001] This application relates to the field of optical elements, and specifically, to a photographic lens. Background Art

[0002] Smartphones, especially current flagship smartphones, pay great attention to the high-power zoom function in imaging, which inevitably introduces a periscope telephoto lens; the length direction of the periscope lens is set along the vertical or horizontal direction of the electronic device, so as to achieve the purpose of reducing the body thickness of the electronic device. At present, the main application scenarios of periscope telephoto lenses on the market are only limited to infinite-distance shooting, and the application scenarios and frequencies of this shooting function are very limited. At the same time, users' demand for macro shooting is increasing day by day. Based on the above two considerations, the concept of a telephoto macro lens has been introduced in this field.

[0003] Therefore, in order to meet market demands, how to balance the performance of infinite distance and macro, and achieve the diversity of the functions of periscope lenses has become one of the current research directions. Summary of the Invention

[0004] This application provides such a photographic lens, which sequentially includes, from the object side to the image side along the optical axis: a first lens with a positive optical power; a second lens with a negative optical power; a third lens with a negative optical power; a fourth lens with a positive optical power; and a fifth lens with an optical power; wherein, the distance BFL on the optical axis from the image side of the fifth lens to the imaging surface of the photographic lens, the distance TD on the optical axis from the object side of the first lens to the image side of the fifth lens, the effective focal length fa of the lens with the smallest dispersion coefficient among the first lens to the fifth lens, and the effective focal length f of the photographic lens satisfy: 0.9 < BFL / TD < 1.1 and 1 < fa / f < 4.

[0005] In one embodiment, the axial distance TD from the object side of the first lens to the image side of the fifth lens and half of the diagonal length Imgh of the effective pixel area on the imaging surface of the photographic lens satisfy: 1.6 < TD / Imgh < 1.9.

[0006] In one embodiment, the radius of curvature of the image side of the second lens is positive, and the radius of curvature of the image side of the fifth lens is positive.

[0007] In one embodiment, the central thickness CT1 of the first lens on the optical axis and the edge thickness ET3 of the third lens satisfy: 3 < CT1 / ET3 < 8.

[0008] In one embodiment, the combined focal length f34 of the third lens and the fourth lens, the effective focal length f3 of the third lens, and the refractive index N3 of the third lens satisfy: 2 < f34 / f3 × N3 < 6.2.

[0009] In one embodiment, the effective focal length f1 of the first lens, the effective focal length f2 of the second lens, and the effective focal length f4 of the fourth lens satisfy: 0<(f1-f2) / f4<1.

[0010] In one embodiment, the curvature radius R4 of the image side surface of the second lens and the curvature radius R10 of the image side surface of the fifth lens satisfy: <R4 / R10<0.6。

[0011] In one embodiment, the center thickness CT1 of the first lens on the optical axis and the effective focal length f of the camera lens satisfy: (CT1+CT2+CT3+CT4+CT5) / f<0.3.

[0012] In one embodiment, the maximum half field of view Semi-FOV of the photographic lens, the curvature radius R9 of the object-side surface of the fifth lens element, and the curvature radius R10 of the image-side surface of the fifth lens element satisfy: |TAN(Semi-FOV)×(R9+R10) / (R9-R10)|<3.5.

[0013] In one embodiment, the air interval T34 between the third lens and the fourth lens on the optical axis and the air interval T12 between the first lens and the second lens on the optical axis satisfy the following conditions: 11 <T34 / T12<20。

[0014] In one embodiment, the combined focal length f123 of the first lens, the second lens and the third lens, the combined focal length f45 of the fourth lens and the fifth lens and the effective focal length f of the photographic lens satisfy the following: <f123 / f+f45 / f<5。

[0015] In one embodiment, the Abbe coefficient V1 of the first lens, the Abbe coefficient V2 of the second lens, the Abbe coefficient V3 of the third lens, the Abbe coefficient V4 of the fourth lens, and the Abbe coefficient V5 of the fifth lens satisfy: 3<(V1+V3+V5) / (V2+V4)<4.

[0016] In one embodiment, the center thickness CT1 of the first lens on the optical axis and the center thickness CT5 of the fifth lens on the optical axis satisfy: 0.3 <CT5 / CT1<0.5。

[0017] In one embodiment, the curvature radius Rx of the object side surface and the curvature radius Ry of the image side surface of the lens with the smallest center thickness on the optical axis among the first to fifth lenses satisfy: <Rx / Ry<2.7。

[0018] In one embodiment, the sum ΣCT of the center thicknesses of the first to fifth lenses on the optical axis and the distance TD from the object-side surface of the first lens to the image-side surface of the fifth lens on the optical axis satisfy: 0.5<ΣCT / TD<0.65.

[0019] In one embodiment, the on-axis distance SAG11 between the intersection of the object-side surface of the first lens and the optical axis and the effective radius vertex of the object-side surface of the first lens and the curvature radius R1 of the object-side surface of the first lens satisfy: 0.2<|SAG11 / R1|<0.3.

[0020] In one embodiment, the refractive index Nmax of the lens with the largest refractive index among the first to fifth lenses, the curvature radius Ra of the object side surface of the lens with the largest refractive index, and the curvature radius Rb of the image side surface satisfy: 1.7 <Nmax×Ra / Rb≤2。

[0021] In one embodiment, the effective focal length f2 of the second lens and the effective focal length f3 of the third lens satisfy: 0.4 <f2 / f3<0.7。

[0022] The photographic lens of the present application controls the ratio of the distance on the optical axis from the image side surface of the fifth lens to the imaging plane to the on-axis distance from the object side surface of the first lens to the image side surface of the fifth lens by combining a reasonable number of lens elements and optical power, and at the same time reasonably sets the effective focal length of the lens with the minimum dispersion coefficient. This can achieve miniaturization of the lens, reserve space for the module motor stroke, improve the space utilization of the entire device, ensure the aesthetics of the entire device, and at the same time reduce dispersion and improve image quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0024] Figure 1 1 shows a schematic structural diagram of a photographic lens according to Example 1 of the present application;

[0025] Figures 2A to 2C axial chromatic aberration curve, astigmatism curve, and distortion curve of the photographic lens of Example 1 are respectively shown;

[0026] Figure 3 1. A schematic structural diagram of a photographic lens according to Embodiment 2 of the present application is shown;

[0027] Figures 4A to 4C axial chromatic aberration curve, astigmatism curve, and distortion curve of the photographic lens of Example 2 are respectively shown;

[0028] Figure 5 1 shows a schematic structural diagram of a photographic lens according to Example 3 of the present application;

[0029] Figures 6A to 6C axial chromatic aberration curve, astigmatism curve, and distortion curve of the photographic lens of Example 3 are shown respectively;

[0030] Figure 71 shows a schematic structural diagram of a photographic lens according to Example 4 of the present application;

[0031] Figures 8A to 8C axial chromatic aberration curve, astigmatism curve, and distortion curve of the photographic lens of Example 4 are shown respectively;

[0032] Figure 9 1 shows a schematic structural diagram of a photographic lens according to Example 5 of the present application;

[0033] 10A to 10C axial chromatic aberration curve, astigmatism curve, and distortion curve of the photographic lens of Example 5 are shown respectively;

[0034] Figure 11 1 shows a schematic structural diagram of a photographic lens according to Example 6 of the present application;

[0035] 12A to 12C axial chromatic aberration curve, astigmatism curve, and distortion curve of the photographic lens of Example 6 are shown respectively;

[0036] Figure 13 1 shows a schematic structural diagram of a photographic lens according to Example 7 of the present application;

[0037] 14A to 14C axial chromatic aberration curve, astigmatism curve, and distortion curve of the photographic lens of Example 7 are shown respectively;

[0038] Figure 15 1 shows a schematic structural diagram of a photographic lens according to Example 8 of the present application;

[0039] 16A to 16C axial chromatic aberration curve, astigmatism curve, and distortion curve of the photographic lens of Example 8 are shown respectively;

[0040] Figure 17 A schematic structural diagram of a photographic lens according to Example 9 of the present application is shown; and

[0041] 18A to 18C The axial chromatic aberration curve, astigmatism curve, and distortion curve of the photographic lens of Example 9 are shown respectively. DETAILED DESCRIPTION

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] The features, principles and other aspects of the present application are described in detail below.

[0050] The photographic lens according to an exemplary embodiment of the present application may include five lenses with optical power, namely, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. These five lenses are arranged in sequence along the optical axis from the object side to the image side. There may be a spacing distance between any two adjacent lenses among the first lens to the fifth lens.

[0051] In the exemplary embodiment, the first lens may have a positive optical power; the second lens may have a negative optical power; the third lens may have a negative optical power; the fourth lens may have a positive optical power; and the fifth lens may have a positive or negative optical power. By rationally matching the number of lenses, surface shapes, and optical powers, the overall optical length of the photographic lens can be effectively reduced, and a high imaging quality of the system can be ensured.

[0052] In the exemplary embodiment, the photographic lens according to an exemplary embodiment of the present application further includes an aperture disposed on the object side surface of the first lens.

[0053] In the exemplary embodiment, the photographic lens according to the present application may satisfy: 0.9 < BFL / TD < 1.1 and 1 < fa / f < 4, where BFL is the distance on the optical axis from the image side surface of the fifth lens to the imaging surface of the photographic lens, TD is the distance on the optical axis from the object side surface of the first lens to the image side surface of the fifth lens, fa is the effective focal length of the lens with the smallest dispersion coefficient among the first lens to the fifth lens, and f is the effective focal length of the photographic lens. By controlling the ratio of the distance on the optical axis from the image side surface of the fifth lens to the imaging surface to the axial distance from the object side surface of the first lens to the image side surface of the fifth lens, lens miniaturization can be achieved, space is reserved for the module motor stroke, the overall space utilization rate of the machine is improved, and the overall aesthetics of the machine is ensured. At the same time, by reasonably setting the effective focal length of the lens with the smallest dispersion coefficient, chromatic aberration can be reduced and the imaging quality can be improved.

[0054] In the exemplary embodiment, the fourth lens among the first lens to the fifth lens has the smallest dispersion coefficient.

[0055] In the exemplary embodiment, the photographic lens according to the present application may satisfy: 1.6 < TD / Imgh < 1.9, where TD is the axial distance from the object side surface of the first lens to the image side surface of the fifth lens, and Imgh is half of the diagonal length of the effective pixel region on the imaging surface of the photographic lens. By satisfying 1.6 < TD / Imgh < 1.9, lens miniaturization can be achieved by controlling the ratio of the axial distance from the object side surface of the first lens to the image side surface of the fifth lens to the image surface of the lens, the overall space utilization rate of the machine is improved, and the overall aesthetics of the machine is ensured.

[0056] In the exemplary embodiment, the radius of curvature of the image side surface of the second lens is positive, and the radius of curvature of the image side surface of the fifth lens is positive.

[0057] In an exemplary embodiment, the photographic lens according to the present application may satisfy: 3 < CT1 / ET3 < 8, where CT1 is the central thickness of the first lens on the optical axis, and ET3 is the edge thickness of the third lens. By satisfying 3 < CT1 / ET3 < 8, the processability of the lens can be ensured and the production cost can be reduced by controlling the central thickness of the first lens and the edge thickness of the third lens.

[0058] In an exemplary embodiment, the photographic lens according to the present application may satisfy: 2 < f34 / f3×N3 < 6.2, where f34 is the combined focal length of the third lens and the fourth lens, f3 is the effective focal length of the third lens, and N3 is the refractive index of the third lens. By satisfying 2 < f34 / f3×N3 < 6.2, the reasonable distribution of the optical power of the lens and the reduction of aberration can be ensured by controlling the effective focal length of the third lens and the refractive index of the third lens.

[0059] In an exemplary embodiment, the photographic lens according to the present application may satisfy: 0 < (f1 - f2) / f4 < 1, where f1 is the effective focal length of the first lens, f2 is the effective focal length of the second lens, and f4 is the effective focal length of the fourth lens. By satisfying 0 < (f1 - f2) / f4 < 1, it is beneficial to the reasonable distribution of the optical power of the first lens, the second lens, and the fourth lens in space, thereby facilitating the reduction of lens aberration by controlling the effective focal lengths of the first lens, the second lens, and the fourth lens.

[0060] In an exemplary embodiment, the photographic lens according to the present application may satisfy: 0 < R4 / R10 < 0.6, where R4 is the radius of curvature of the image side of the second lens, and R10 is the radius of curvature of the image side of the fifth lens. By satisfying 0 < R4 / R10 < 0.6, it is beneficial to control the shapes of the second lens and the fifth lens and meet the processability requirements by controlling the radius of curvature of the image side of the second lens and the radius of curvature of the image side of the fifth lens.

[0061] In an exemplary embodiment, the photographic lens according to the present application may satisfy: (CT1 + CT2 + CT3 + CT4 + CT5) / f < 0.3, where CT1 is the central thickness of the first lens on the optical axis, CT2 is the central thickness of the second lens on the optical axis, CT3 is the central thickness of the third lens on the optical axis, CT4 is the central thickness of the fourth lens on the optical axis, CT5 is the central thickness of the fifth lens on the optical axis, and f is the effective focal length of the photographic lens. By satisfying (CT1 + CT2 + CT3 + CT4 + CT5) / f < 0.3, the magnification of the lens and the processability of the lens can be ensured and the production cost can be reduced by controlling the central thicknesses of the first to fifth lenses and the effective focal length of the lens.

[0062] In an exemplary embodiment, the photographic lens according to the present application may satisfy: |TAN(Semi - FOV)×(R9 + R10) / (R9 - R10)| < 3.5, where Semi - FOV is the maximum semi - field angle of the photographic lens, R9 is the radius of curvature of the object side surface of the fifth lens, and R10 is the radius of curvature of the image side surface of the fifth lens. By satisfying |TAN(Semi - FOV)×(R9 + R10) / (R9 - R10)| < 3.5, the magnification of the lens and the shape of the fifth lens can be guaranteed by controlling the field angle of the lens, the radius of curvature of the object side surface of the fifth lens, and the radius of curvature of the image side surface of the fifth lens, meeting the processing requirements.

[0063] In an exemplary embodiment, the photographic lens according to the present application may satisfy: 11 < T34 / T12 < 20, where T34 is the air gap between the third lens and the fourth lens on the optical axis, and T12 is the air gap between the first lens and the second lens on the optical axis. By satisfying 11 < T34 / T12 < 20, the processing performance of the photographic lens can be guaranteed and the production cost can be reduced by controlling the air gap between the third lens and the fourth lens on the optical axis and the air gap between the first lens and the second lens on the optical axis.

[0064] In an exemplary embodiment, the photographic lens according to the present application may satisfy: 3 < f123 / f + f45 / f < 5, where f123 is the combined focal length of the first lens, the second lens and the third lens, f45 is the combined focal length of the fourth lens and the fifth lens, and f is the effective focal length of the photographic lens. By satisfying 3 < f123 / f + f45 / f < 5, the reasonable distribution of the optical power of the first lens to the fifth lens in space can be facilitated, thereby reducing lens aberration by controlling the combined focal length of the first lens, the second lens and the third lens, the combined focal length of the fourth lens and the fifth lens, and the effective focal length of the photographic lens.

[0065] In an exemplary embodiment, the photographic lens according to the present application may satisfy: 3 < (V1 + V3 + V5) / (V2 + V4) < 4, where V1 is the dispersion coefficient of the first lens, V2 is the dispersion coefficient of the second lens, V3 is the dispersion coefficient of the third lens, V4 is the dispersion coefficient of the fourth lens, and V5 is the dispersion coefficient of the fifth lens. By controlling the dispersion coefficients of the first lens, the second lens, the third lens, the fourth lens, and the fifth lens, the lens aberration can be reduced.

[0066] In an exemplary embodiment, the photographic lens according to the present application may satisfy: 0.3 < CT5 / CT1 < 0.5, where CT1 is the central thickness of the first lens on the optical axis, and CT5 is the central thickness of the fifth lens on the optical axis. By satisfying 0.3 < CT5 / CT1 < 0.5, the processing performance of the lens can be guaranteed and the production cost can be reduced by controlling the central thicknesses of the first lens and the fifth lens.

[0067] In an exemplary embodiment, the photographic lens according to the present application can satisfy: 2 < Rx / Ry < 2.7, where Rx is the radius of curvature of the object side of the lens with the smallest central thickness on the optical axis among the first lens to the fifth lens, and Ry is the radius of curvature of the image side of the lens with the smallest central thickness on the optical axis among the first lens to the fifth lens. By controlling the radii of curvature of the object side and the image side of the lens with the smallest central thickness on the optical axis, it is beneficial to meet the processing requirements of the thinnest lens.

[0068] In an exemplary embodiment, the photographic lens according to the present application can satisfy: 0.5 < ∑CT / TD < 0.65, where ∑CT is the sum of the central thicknesses of the first lens to the fifth lens on the optical axis, and TD is the distance on the optical axis from the object side of the first lens to the image side of the fifth lens. By controlling the central thicknesses of all the lenses and the distance from the object side of the first lens to the image side of the fifth lens, lens miniaturization can be achieved.

[0069] In an exemplary embodiment, the photographic lens according to the present application can satisfy: 0.2 < |SAG11 / R1| < 0.3, where SAG11 is the axial distance between the intersection of the object side of the first lens and the optical axis and the vertex of the effective radius of the object side of the first lens, and R1 is the radius of curvature of the object side of the first lens. Satisfying 0.2 < |SAG11 / R1| < 0.3 is beneficial to achieve the processing of the first lens and improve the yield rate.

[0070] In an exemplary embodiment, the photographic lens according to the present application can satisfy: 1.7 < Nmax×Ra / Rb ≤ 2, where Nmax is the refractive index of the lens with the largest refractive index among the first lens to the fifth lens, Ra is the radius of curvature of the object side of the lens with the largest refractive index, and Rb is the radius of curvature of the image side of the lens with the largest refractive index. Satisfying 1.7 < Nmax×Ra / Rb ≤ 2, by controlling the relationship between the radius of curvature and the refractive index, the shape of the lens with the largest refractive index can be made reasonable, thereby reducing the aberration of the lens.

[0071] In an exemplary embodiment, the photographic lens according to the present application can satisfy: 0.4 < f2 / f3 < 0.7, where f2 is the effective focal length of the second lens and f3 is the effective focal length of the third lens. Satisfying 0.4 < f2 / f3 < 0.7, by controlling the effective focal lengths of the second lens and the third lens, it is beneficial to reasonably distribute the optical power in space, thereby reducing the lens aberration.

[0072] In an exemplary embodiment, at least one of the mirror surfaces of each lens in the first to fifth lenses is an aspheric mirror surface. The present application does not specifically limit the specific number of spherical lenses and aspheric lenses. If the focus is on resolution quality, all lenses can use aspheric lenses. The characteristic of an aspheric lens is that the curvature changes continuously from the center of the lens to the periphery of the lens. The characteristic of a spherical lens is that there is a constant curvature from the center of the lens to the periphery. Aspheric lenses have better curvature radius characteristics and have the advantages of improving distortion aberration and improving astigmatism aberration. After using aspheric lenses, the aberrations that occur during imaging can be eliminated as much as possible, thereby improving imaging quality. Optionally, the object side and image side of each lens in the first to fifth lenses are aspheric mirror surfaces.

[0073] In an exemplary embodiment, the effective focal length f1 of the first lens may be, for example, in the range of 5.0 mm to 5.5 mm, the effective focal length f2 of the second lens may be, for example, in the range of -8.0 mm to -7.0 mm, the effective focal length f3 of the third lens may be, for example, in the range of -16.0 mm to -12.0 mm, the effective focal length f4 of the fourth lens may be, for example, in the range of 23.0 mm to 50.0 mm, and the effective focal length f5 of the fifth lens may be, for example, in the range of -261.0 mm to 100.0 mm. The effective focal length f of the photographic lens may satisfy 14.0 mm < f < 15.0 mm. The distance TTL from the object side surface of the first lens to the imaging plane of the photographic lens on the optical axis may satisfy 13.0 mm < TTL < 14.0 mm. Half the diagonal length of the effective pixel area on the imaging plane of the photographic lens, Imgh, may be, for example, in the range of 3.0 mm to 4.0 mm. The maximum half field of view angle Semi-FOV of the camera lens may be, for example, in the range of 14.0° to 15.0°.

[0074] In an exemplary embodiment, the photographic lens according to the present application further includes a filter for correcting color deviation and / or a protective glass for protecting a photosensitive element located on the imaging surface.

[0075] The photographic lens according to the exemplary embodiment of the present application has a telephoto characteristic. In application, the photographic lens according to the exemplary embodiment of the present application can adopt a periscope lens design, with its length arranged along the vertical or horizontal direction of the electronic device, thereby achieving the purpose of reducing the thickness of the electronic device body. The photographic lens according to the above-mentioned embodiment of the present application can use multiple lenses, such as the five lenses described above. By rationally arranging the various lenses of the photographic lens, the telephoto characteristic of the lens is achieved, thereby achieving excellent telephoto shooting effects.

[0076] However, those skilled in the art will appreciate that the number of lenses comprising a photographic lens can be varied to achieve the various results and advantages described herein without departing from the claimed technical solutions. For example, while the embodiments describe five lenses as an example, the photographic lens is not limited to including five lenses. If desired, the photographic lens may also include other numbers of lenses.

[0077] Specific embodiments of the photographic lens applicable to the above-mentioned embodiments will be further described below with reference to the accompanying drawings.

[0078] Example 1

[0079] The following reference Figures 1 to 2C A photographic lens according to Embodiment 1 of the present application will be described. Figure 1 A schematic structural diagram of a photographic lens according to Example 1 of the present application is shown.

[0080] like Figure 1 As shown, the photographic lens includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6 and an imaging surface S13.

[0081] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being convex. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being concave and its image-side surface S8 being convex. The fifth lens E5 has positive optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The filter E6 has an object-side surface S11 and an image-side surface S12. Light from the object passes through each surface S1 to S12 in sequence and is ultimately imaged on the imaging surface S13.

[0082] In this example, the effective focal length f of the photographic lens is 14.84 mm, the total length TTL of the photographic lens (i.e., the distance from the object-side surface S1 of the first lens E1 to the imaging surface S13 of the photographic lens on the optical axis) is 13.50 mm, half the diagonal length Imgh of the effective pixel area on the imaging surface S13 of the photographic lens is 3.90 mm, and the maximum half field of view Semi-FOV of the photographic lens is 14.6°.

[0083] Table 1 shows the basic parameters of the photographic lens of Example 1, wherein the units of the curvature radius, thickness and effective focal length are all millimeters (mm).

[0084]

[0085] Table 1

[0086] In Example 1, the object-side surface and the image-side surface of any lens from the first lens E1 to the fifth lens E5 are both aspherical surfaces. The surface shape x of each aspherical lens can be defined by, but is not limited to, the following aspherical surface formula:

[0087]

[0088] 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; Ai is the correction coefficient of the i-th order of the aspheric surface. The following Tables 2-1 and 2-2 give 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, A29, 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 、A 20 、A 22 、A 24 、A 26 、A 28 and A 30 .

[0089] Face number A4 A6 A8 A10 A12 A14 A16 S1 -7.0863E-04 4.3520E-05 -5.3090E-04 9.1319E-04 -1.0865E-03 9.1016E-04 -5.5009E-04 S2 6.3185E-03 -1.3011E-02 1.9413E-02 -1.4849E-02 2.8955E-03 5.3703E-03 -6.0895E-03 S3 7.7105E-03 -1.5036E-02 2.1138E-02 -8.4936E-03 -1.5597E-02 2.9547E-02 -2.5561E-02 S4 6.5150E-03 -5.2710E-03 8.6189E-03 3.3499E-03 -3.3375E-02 6.2699E-02 -6.8478E-02 S5 2.1159E-03 1.3724E-02 -5.7617E-02 2.4277E-01 -6.4765E-01 1.1464E+00 -1.4015E+00 S6 -1.1629E-03 2.0538E-02 -9.0740E-02 3.7654E-01 -1.0114E+00 1.8370E+00 -2.3281E+00 S7 1.7008E-02 -2.3842E-02 2.9938E-02 -9.0743E-02 2.5712E-01 -5.0031E-01 6.7035E-01 S8 1.5624E-02 -2.6698E-02 2.6600E-02 -2.5144E-02 3.6891E-02 -5.8681E-02 6.8668E-02 S9 -3.2827E-02 -1.3097E-02 4.0783E-02 -6.4876E-02 8.5061E-02 -8.7861E-02 6.8350E-02 S10 -3.6223E-02 8.0760E-03 2.9403E-03 -1.6412E-02 2.8154E-02 -2.9470E-02 2.0803E-02

[0090] Table 2-1

[0091] Face number A18 A20 A22 A24 A26 A28 A30 S1 2.4072E-04 -7.5750E-05 1.6876E-05 -2.5869E-06 2.5890E-07 -1.5208E-08 3.9732E-10 S2 3.3780E-03 -1.1891E-03 2.8159E-04 -4.4962E-05 4.6613E-06 -2.8414E-07 7.7448E-09 S3 1.3902E-02 -5.1313E-03 1.3111E-03 -2.2941E-04 2.6310E-05 -1.7858E-06 5.4458E-08 S4 5.0118E-02 -2.5676E-02 9.2778E-03 -2.3229E-03 3.8395E-04 -3.7694E-05 1.6643E-06 S5 1.2095E+00 -7.4265E-01 3.2243E-01 -9.6699E-02 1.9047E-02 -2.2159E-03 1.1532E-04 S6 2.0950E+00 -1.3458E+00 6.1234E-01 -1.9251E-01 3.9715E-02 -4.8300E-03 2.6201E-04 S7 -6.3107E-01 4.2133E-01 -1.9885E-01 6.4978E-02 -1.4000E-02 1.7887E-03 -1.0253E-04 S8 -5.4889E-02 2.9961E-02 -1.1215E-02 2.8546E-03 -4.7653E-04 4.7468E-05 -2.1517E-06 S9 -3.9159E-02 1.6228E-02 -4.7620E-03 9.5910E-04 -1.2565E-04 9.6238E-06 -3.2660E-07 S10 -1.0254E-02 3.5636E-03 -8.6741E-04 1.4436E-04 -1.5616E-05 9.8740E-07 -2.7644E-08

[0092] Table 2-2

[0093] Figure 2A The axial chromatic aberration curve of the photographic lens of Example 1 is shown, which indicates the deviation of the convergence point of light of different wavelengths passing through the lens. Figure 2B The astigmatism curve of the imaging lens of Example 1 is shown, which indicates meridional field curvature and sagittal field curvature. Figure 2C The distortion curve of the camera lens of Example 1 is shown, which indicates the distortion value corresponding to different field angles. Figures 2A to 2C It can be seen that the photographic lens provided in Example 1 can achieve good imaging quality.

[0094] Example 2

[0095] The following reference Figures 3 to 4C A photographic lens according to Example 2 of the present application will be described. In this 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 a photographic lens according to embodiment 2 of the present application is shown.

[0096] like Figure 3 As shown, the photographic lens includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6 and an imaging surface S13.

[0097] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being convex. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being concave and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The filter E6 has an object-side surface S11 and an image-side surface S12. Light from the object passes through each surface S1 to S12 in sequence and is ultimately imaged on the imaging surface S13.

[0098] In this example, the effective focal length f of the photographic lens is 14.84 mm, the total length TTL of the photographic lens (i.e., the distance from the object-side surface S1 of the first lens E1 to the imaging surface S13 of the photographic lens on the optical axis) is 13.50 mm, half the diagonal length Imgh of the effective pixel area on the imaging surface S13 of the photographic lens is 3.90 mm, and the maximum half field of view Semi-FOV of the photographic lens is 14.6°.

[0099] Table 3 shows the basic parameters of the photographic lens of Example 2, where the units of curvature radius, thickness, and effective focal length are all in millimeters (mm). Tables 4-1 and 4-2 show the high-order coefficients of the various aspherical mirror surfaces that can be used in Example 2, where the surface shapes of the various aspherical surfaces can be defined by formula (1) given in Example 1 above.

[0100]

[0101] Table 3

[0102]

[0103]

[0104] Table 4-1

[0105] Face number A18 A20 A22 A24 A26 A28 A30 S1 -5.4954E-05 1.7046E-05 -3.5462E-06 4.8985E-07 -4.3083E-08 2.1811E-09 -4.8277E-11 S2 -1.4395E-02 3.6170E-03 -6.5206E-04 8.2053E-05 -6.8262E-06 3.3631E-07 -7.3981E-09 S3 -5.4430E-03 -5.2654E-04 6.1009E-04 -1.7339E-04 2.6359E-05 -2.1743E-06 7.6817E-08 S4 -1.4388E-01 7.3287E-02 -2.7185E-02 7.0877E-03 -1.2263E-03 1.2614E-04 -5.8300E-06 S5 6.0013E-01 -3.4978E-01 1.4398E-01 -4.0910E-02 7.6313E-03 -8.4063E-04 4.1416E-05 S6 4.2763E+00 -2.7921E+00 1.2964E+00 -4.1762E-01 8.8660E-02 -1.1150E-02 6.2902E-04 S7 5.2501E-01 -3.1148E-01 1.3210E-01 -3.8864E-02 7.5126E-03 -8.5631E-04 4.3568E-05 S8 -4.2932E-02 8.4889E-03 6.6880E-04 -8.4574E-04 2.1396E-04 -2.5017E-05 1.1579E-06 S9 -2.3667E-01 9.6014E-02 -2.7679E-02 5.5443E-03 -7.3393E-04 5.7748E-05 -2.0460E-06 S10 -3.2891E-02 1.1495E-02 -2.8629E-03 4.9578E-04 -5.6717E-05 3.8530E-06 -1.1770E-07

[0106] Table 4-2

[0107] Figure 4A The axial chromatic aberration curve of the photographic lens of Example 2 is shown, which indicates the deviation of the convergence point of light of different wavelengths passing through the lens. Figure 4BThe astigmatism curve of the imaging lens of Example 2 is shown, which indicates meridional field curvature and sagittal field curvature. Figure 4C The distortion curve of the camera lens of Example 2 is shown, which indicates the distortion value corresponding to different field angles. Figures 4A to 4C It can be seen that the photographic lens provided in Example 2 can achieve good imaging quality.

[0108] Example 3

[0109] The following reference Figures 5 to 6C A photographic lens according to Embodiment 3 of the present application is described. Figure 5 A schematic structural diagram of a photographic lens according to Example 3 of the present application is shown.

[0110] like Figure 5 As shown, the photographic lens includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6 and an imaging surface S13.

[0111] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being convex. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being concave and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being concave. The filter E6 has an object-side surface S11 and an image-side surface S12. Light from the object passes through each surface S1 to S12 in sequence and is ultimately imaged on the imaging surface S13.

[0112] In this example, the effective focal length f of the photographic lens is 14.84 mm, the total length TTL of the photographic lens (i.e., the distance from the object-side surface S1 of the first lens E1 to the imaging surface S13 of the photographic lens on the optical axis) is 13.50 mm, half the diagonal length Imgh of the effective pixel area on the imaging surface S13 of the photographic lens is 3.90 mm, and the maximum half field of view Semi-FOV of the photographic lens is 14.6°.

[0113] Table 5 shows the basic parameters of the photographic lens of Example 3, where the units of curvature radius, thickness, and effective focal length are all in millimeters (mm). Tables 6-1 and 6-2 show 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.

[0114]

[0115] Table 5

[0116] Face number A4 A6 A8 A10 A12 A14 A16 S1 -7.0188E-04 -4.7124E-05 -5.7559E-04 1.2582E-03 -1.4599E-03 1.0655E-03 -5.2924E-04 S2 1.2053E-02 -4.3025E-02 1.1219E-01 -1.7739E-01 1.8366E-01 -1.3138E-01 6.7065E-02 S3 1.3600E-02 -4.6616E-02 1.2133E-01 -1.8918E-01 1.8776E-01 -1.2307E-01 5.3314E-02 S4 8.4520E-03 -1.2907E-02 3.2598E-02 -3.6266E-02 -1.3424E-02 9.8522E-02 -1.4902E-01 S5 1.1709E-02 6.5223E-03 -4.6185E-02 2.0143E-01 -5.3415E-01 9.3287E-01 -1.1230E+00 S6 8.8149E-03 3.1210E-02 -2.0010E-01 8.2501E-01 -2.1975E+00 3.9913E+00 -5.0970E+00 S7 3.7081E-04 1.6291E-02 -1.1360E-01 3.5533E-01 -7.8905E-01 1.2935E+00 -1.5605E+00 S8 1.1028E-02 -2.6781E-02 5.1405E-02 -1.1106E-01 1.7584E-01 -1.7082E-01 9.2570E-02 S9 -1.4526E-02 -4.7600E-02 1.5319E-01 -3.5831E-01 5.9453E-01 -6.8161E-01 5.4784E-01 S10 -2.4999E-02 -3.4863E-03 2.7086E-02 -6.4179E-02 9.5859E-02 -9.6406E-02 6.7555E-02

[0117] Table 6-1

[0118] Face number A18 A20 A22 A24 A26 A28 A30 S1 1.8559E-04 -4.6587E-05 8.3380E-06 -1.0401E-06 8.5991E-08 -4.2353E-09 9.4070E-11 S2 -2.4839E-02 6.6977E-03 -1.3024E-03 1.7795E-04 -1.6211E-05 8.8426E-07 -2.1847E-08 S3 -1.4366E-02 1.7627E-03 2.3571E-04 -1.4104E-04 2.6258E-05 -2.4073E-06 9.1204E-08 S4 1.2984E-01 -7.4496E-02 2.9138E-02 -7.7233E-03 1.3306E-03 -1.3465E-04 6.0780E-06 S5 9.5421E-01 -5.7718E-01 2.4716E-01 -7.3225E-02 1.4277E-02 -1.6480E-03 8.5316E-05 S6 4.6523E+00 -3.0484E+00 1.4221E+00 -4.6086E-01 9.8565E-02 -1.2506E-02 7.1283E-04 S7 1.3768E+00 -8.8175E-01 4.0404E-01 -1.2883E-01 2.7119E-02 -3.3858E-03 1.8988E-04 S8 -1.5637E-02 -1.4185E-02 1.1932E-02 -4.4238E-03 9.2744E-04 -1.0656E-04 5.2404E-06 S9 -3.1379E-01 1.2887E-01 -3.7671E-02 7.6479E-03 -1.0245E-03 8.1398E-05 -2.9046E-06 S10 -3.3637E-02 1.1976E-02 -3.0264E-03 5.2993E-04 -6.1108E-05 4.1726E-06 -1.2778E-07

[0119] Table 6-2

[0120] Figure 6A The axial chromatic aberration curve of the photographic lens of Example 3 is shown, which indicates the deviation of the focal point of light of different wavelengths passing through the lens. Figure 6B The astigmatism curve of the imaging lens of Example 3 is shown, which indicates meridional field curvature and sagittal field curvature. Figure 6C The distortion curve of the camera lens of Example 3 is shown, which indicates the distortion value corresponding to different field angles. Figures 6A to 6C It can be seen that the photographic lens provided in Example 3 can achieve good imaging quality.

[0121] Example 4

[0122] The following reference Figures 7 to 8C A photographic lens according to Embodiment 4 of the present application is described. Figure 7 A schematic structural diagram of a photographic lens according to Example 4 of the present application is shown.

[0123] like Figure 7 As shown, the photographic lens includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6 and an imaging surface S13.

[0124] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being convex. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being concave and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being concave. The filter E6 has an object-side surface S11 and an image-side surface S12. Light from the object passes through each surface S1 to S12 in sequence and is ultimately imaged on the imaging surface S13.

[0125] In this example, the effective focal length f of the photographic lens is 14.84 mm, the total length TTL of the photographic lens (i.e., the distance from the object-side surface S1 of the first lens E1 to the imaging surface S13 of the photographic lens on the optical axis) is 13.50 mm, half the diagonal length Imgh of the effective pixel area on the imaging surface S13 of the photographic lens is 3.90 mm, and the maximum half field of view Semi-FOV of the photographic lens is 14.6°.

[0126] Table 7 shows the basic parameters of the photographic lens of Example 4, where the units of curvature radius, thickness, and effective focal length are all in millimeters (mm). Tables 8-1 and 8-2 show the high-order coefficients of the various aspherical mirror surfaces that can be used in Example 4, where the surface shapes of the various aspherical surfaces can be defined by formula (1) given in Example 1 above.

[0127]

[0128]

[0129] Table 7

[0130] Face number A4 A6 A8 A10 A12 A14 A16 S1 -7.0188E-04 -4.7124E-05 -5.7559E-04 1.2582E-03 -1.4599E-03 1.0655E-03 -5.2924E-04 S2 1.2053E-02 -4.3025E-02 1.1219E-01 -1.7739E-01 1.8366E-01 -1.3138E-01 6.7065E-02 S3 1.3600E-02 -4.6616E-02 1.2133E-01 -1.8918E-01 1.8776E-01 -1.2307E-01 5.3314E-02 S4 8.4520E-03 -1.2907E-02 3.2598E-02 -3.6266E-02 -1.3424E-02 9.8522E-02 -1.4902E-01 S5 1.1709E-02 6.5223E-03 -4.6185E-02 2.0143E-01 -5.3415E-01 9.3287E-01 -1.1230E+00 S6 8.8149E-03 3.1210E-02 -2.0010E-01 8.2501E-01 -2.1975E+00 3.9913E+00 -5.0970E+00 S7 3.7081E-04 1.6291E-02 -1.1360E-01 3.5533E-01 -7.8905E-01 1.2935E+00 -1.5605E+00 S8 1.1028E-02 -2.6781E-02 5.1405E-02 -1.1106E-01 1.7584E-01 -1.7082E-01 9.2570E-02 S9 -1.4526E-02 -4.7600E-02 1.5319E-01 -3.5831E-01 5.9453E-01 -6.8161E-01 5.4784E-01 S10 -2.4999E-02 -3.4863E-03 2.7086E-02 -6.4179E-02 9.5859E-02 -9.6406E-02 6.7555E-02

[0131] Table 8-1

[0132] Face number A18 A20 A22 A24 A26 A28 A30 S1 1.8559E-04 -4.6587E-05 8.3380E-06 -1.0401E-06 8.5991E-08 -4.2353E-09 9.4070E-11 S2 -2.4839E-02 6.6977E-03 -1.3024E-03 1.7795E-04 -1.6211E-05 8.8426E-07 -2.1847E-08 S3 -1.4366E-02 1.7627E-03 2.3571E-04 -1.4104E-04 2.6258E-05 -2.4073E-06 9.1204E-08 S4 1.2984E-01 -7.4496E-02 2.9138E-02 -7.7233E-03 1.3306E-03 -1.3465E-04 6.0780E-06 S5 9.5421E-01 -5.7718E-01 2.4716E-01 -7.3225E-02 1.4277E-02 -1.6480E-03 8.5316E-05 S6 4.6523E+00 -3.0484E+00 1.4221E+00 -4.6086E-01 9.8565E-02 -1.2506E-02 7.1283E-04 S7 1.3768E+00 -8.8175E-01 4.0404E-01 -1.2883E-01 2.7119E-02 -3.3858E-03 1.8988E-04 S8 -1.5637E-02 -1.4185E-02 1.1932E-02 -4.4238E-03 9.2744E-04 -1.0656E-04 5.2404E-06 S9 -3.1379E-01 1.2887E-01 -3.7671E-02 7.6479E-03 -1.0245E-03 8.1398E-05 -2.9046E-06 S10 -3.3637E-02 1.1976E-02 -3.0264E-03 5.2993E-04 -6.1108E-05 4.1726E-06 -1.2778E-07

[0133] Table 8-2

[0134] Figure 8A The axial chromatic aberration curve of the photographic lens of Example 4 is shown, which indicates the deviation of the convergence point of light of different wavelengths passing through the lens. Figure 8B The astigmatism curve of the imaging lens of Example 4 is shown, which indicates meridional field curvature and sagittal field curvature. Figure 8C The distortion curve of the camera lens of Example 4 is shown, which indicates the distortion value corresponding to different field angles. Figures 8A to 8C It can be seen that the photographic lens provided in Example 4 can achieve good imaging quality.

[0135] Example 5

[0136] The following reference Figures 9 to 10C A photographic lens according to Embodiment 5 of the present application is described. Figure 9 A schematic structural diagram of a photographic lens according to Example 5 of the present application is shown.

[0137] like Figure 9 As shown, the photographic lens includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6 and an imaging surface S13.

[0138] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being convex. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being concave and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being concave. The filter E6 has an object-side surface S11 and an image-side surface S12. Light from the object passes through each surface S1 to S12 in sequence and is ultimately imaged on the imaging surface S13.

[0139] In this example, the effective focal length f of the photographic lens is 14.84 mm, the total length TTL of the photographic lens (i.e., the distance from the object-side surface S1 of the first lens E1 to the imaging surface S13 of the photographic lens on the optical axis) is 13.50 mm, half the diagonal length Imgh of the effective pixel area on the imaging surface S13 of the photographic lens is 3.90 mm, and the maximum half field of view Semi-FOV of the photographic lens is 14.6°.

[0140] Table 9 shows the basic parameters of the photographic lens of Example 5, where the units of curvature radius, thickness, and effective focal length are all in millimeters (mm). Tables 10-1 and 10-2 show the high-order coefficients of the various aspherical mirror surfaces that can be used in Example 5, where the surface shapes of the various aspherical surfaces can be defined by Formula (1) given in Example 1 above.

[0141]

[0142] Table 9

[0143] Face number A4 A6 A8 A10 A12 A14 A16 S1 -6.5841E-04 -2.3258E-04 -5.7951E-05 4.1095E-04 -5.7956E-04 4.5239E-04 -2.3351E-04 S2 1.1059E-02 -3.7818E-02 9.6432E-02 -1.4869E-01 1.4980E-01 -1.0410E-01 5.1535E-02 S3 1.2538E-02 -4.1356E-02 1.0562E-01 -1.6112E-01 1.5627E-01 -1.0005E-01 4.2317E-02 S4 8.2553E-03 -1.3343E-02 3.9546E-02 -6.7907E-02 6.7356E-02 -3.2453E-02 -5.8452E-03 S5 1.0697E-02 7.7686E-03 -4.8663E-02 2.0534E-01 -5.3326E-01 9.1681E-01 -1.0903E+00 S6 7.6832E-03 3.0550E-02 -1.8856E-01 7.7427E-01 -2.0584E+00 3.7351E+00 -4.7684E+00 S7 -7.8124E-04 2.1241E-02 -1.3152E-01 3.9366E-01 -8.2956E-01 1.2915E+00 -1.4907E+00 S8 7.7336E-03 -5.2163E-03 -3.1275E-02 7.9557E-02 -1.1231E-01 1.3097E-01 -1.3268E-01 S9 -1.7807E-02 -2.2655E-02 5.7372E-02 -1.3830E-01 2.6032E-01 -3.2605E-01 2.7470E-01 S10 -2.4651E-02 -2.9839E-03 2.4482E-02 -5.8760E-02 8.8585E-02 -8.9444E-02 6.2668E-02

[0144] Table 10-1

[0145] Face number A18 A20 A22 A24 A26 A28 A30 S1 8.5185E-05 -2.2522E-05 4.3122E-06 -5.8389E-07 5.2986E-08 -2.8855E-09 7.1121E-11 S2 -1.8476E-02 4.8124E-03 -9.0150E-04 1.1827E-04 -1.0303E-05 5.3464E-07 -1.2488E-08 S3 -1.1117E-02 1.3165E-03 1.8319E-04 -1.0449E-04 1.8992E-05 -1.7049E-06 6.3330E-08 S4 2.0902E-02 -1.6035E-02 7.0724E-03 -1.9884E-03 3.5318E-04 -3.6282E-05 1.6474E-06 S5 9.1732E-01 -5.5028E-01 2.3394E-01 -6.8869E-02 1.3351E-02 -1.5332E-03 7.9002E-05 S6 4.3522E+00 -2.8518E+00 1.3303E+00 -4.3094E-01 9.2110E-02 -1.1676E-02 6.6475E-04 S7 1.2688E+00 -7.8938E-01 3.5338E-01 -1.1058E-01 2.2928E-02 -2.8282E-03 1.5711E-04 S8 1.0521E-01 -6.0437E-02 2.4255E-02 -6.5983E-03 1.1573E-03 -1.1796E-04 5.3054E-06 S9 -1.6032E-01 6.5822E-02 -1.8973E-02 3.7579E-03 -4.8666E-04 3.7072E-05 -1.2584E-06 S10 -3.1118E-02 1.1033E-02 -2.7749E-03 4.8359E-04 -5.5519E-05 3.7767E-06 -1.1531E-07

[0146] Table 10-2

[0147] Figure 10A The axial chromatic aberration curve of the photographic lens of Example 5 is shown, which indicates the deviation of the convergence point of light of different wavelengths passing through the lens. Figure 10B The astigmatism curve of the imaging lens of Example 5 is shown, which indicates meridional field curvature and sagittal field curvature. Figure 10C The distortion curve of the camera lens of Example 5 is shown, which indicates the distortion value corresponding to different field angles. 10A to 10C It can be seen that the photographic lens provided in Example 5 can achieve good imaging quality.

[0148] Example 6

[0149] The following reference Figures 11 to 12C A photographic lens according to Example 6 of the present application is described. Figure 11 A schematic structural diagram of a photographic lens according to Example 6 of the present application is shown.

[0150] like Figure 11 As shown, the photographic lens includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6 and an imaging surface S13.

[0151] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being convex. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being concave and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being concave. The filter E6 has an object-side surface S11 and an image-side surface S12. Light from the object passes through each surface S1 to S12 in sequence and is ultimately imaged on the imaging surface S13.

[0152] In this example, the effective focal length f of the photographic lens is 14.84 mm, the total length TTL of the photographic lens (i.e., the distance from the object-side surface S1 of the first lens E1 to the imaging surface S13 of the photographic lens on the optical axis) is 13.50 mm, half the diagonal length Imgh of the effective pixel area on the imaging surface S13 of the photographic lens is 3.90 mm, and the maximum half field of view Semi-FOV of the photographic lens is 14.6°.

[0153] Table 11 shows the basic parameters of the photographic lens of Example 6, where the units of curvature radius, thickness, and effective focal length are all in millimeters (mm). Tables 12-1 and 12-2 show the high-order coefficients of the various aspherical mirror surfaces that can be used in Example 6, where the surface shapes of the various aspherical surfaces can be defined by formula (1) given in Example 1 above.

[0154]

[0155] Table 11

[0156] Face number A4 A6 A8 A10 A12 A14 A16 S1 -6.2078E-04 -4.3809E-04 5.3984E-04 -5.9219E-04 5.0030E-04 -3.3791E-04 1.7282E-04 S2 1.0611E-02 -3.4909E-02 8.8910E-02 -1.3683E-01 1.3711E-01 -9.4424E-02 4.6170E-02 S3 1.2165E-02 -3.8896E-02 9.9917E-02 -1.5387E-01 1.5106E-01 -9.8632E-02 4.3333E-02 S4 8.5403E-03 -1.6184E-02 5.8554E-02 -1.3789E-01 2.2766E-01 -2.7720E-01 2.5321E-01 S5 1.0806E-02 7.9789E-03 -5.2613E-02 2.2490E-01 -5.8827E-01 1.0182E+00 -1.2197E+00 S6 7.9038E-03 2.8723E-02 -1.7922E-01 7.4104E-01 -1.9757E+00 3.5882E+00 -4.5800E+00 S7 -5.3529E-04 1.8539E-02 -1.1831E-01 3.4678E-01 -7.1286E-01 1.0849E+00 -1.2271E+00 S8 8.8560E-03 -8.4353E-03 -2.6267E-02 7.7222E-02 -1.2043E-01 1.5188E-01 -1.5796E-01 S9 -1.7498E-02 -2.4922E-02 5.9923E-02 -1.3470E-01 2.4197E-01 -2.9260E-01 2.3812E-01 S10 -2.5410E-02 -2.9181E-03 2.4932E-02 -5.9429E-02 8.8915E-02 -8.9155E-02 6.2075E-02

[0157] Table 12-1

[0158] Face number A18 A20 A22 A24 A26 A28 A30 S1 -6.4053E-05 1.6795E-05 -3.0537E-06 3.7335E-07 -2.8989E-08 1.2726E-09 -2.3483E-11 S2 -1.6293E-02 4.1620E-03 -7.6143E-04 9.7059E-05 -8.1620E-06 4.0536E-07 -8.9549E-09 S3 -1.2449E-02 2.0529E-03 -6.5420E-05 -5.0183E-05 1.1469E-05 -1.1021E-06 4.1994E-08 S4 -1.7322E-01 8.7680E-02 -3.2175E-02 8.2864E-03 -1.4163E-03 1.4403E-04 -6.5885E-06 S5 1.0345E+00 -6.2611E-01 2.6870E-01 -7.9881E-02 1.5642E-02 -1.8147E-03 9.4471E-05 S6 4.1758E+00 -2.7312E+00 1.2707E+00 -4.1029E-01 8.7343E-02 -1.1019E-02 6.2389E-04 S7 1.0250E+00 -6.2610E-01 2.7520E-01 -8.4551E-02 1.7212E-02 -2.0855E-03 1.1390E-04 S8 1.2404E-01 -6.9595E-02 2.7168E-02 -7.1801E-03 1.2225E-03 -1.2084E-04 5.2620E-06 S9 -1.3374E-01 5.2545E-02 -1.4390E-02 2.6834E-03 -3.2330E-04 2.2545E-05 -6.8498E-07 S10 -3.0653E-02 1.0816E-02 -2.7094E-03 4.7068E-04 -5.3916E-05 3.6628E-06 -1.1180E-07

[0159] Table 12-2 Figure 12AThe axial chromatic aberration curve of the photographic lens of Example 6 is shown, which indicates the deviation of the convergence point of light of different wavelengths passing through the lens. Figure 12B The astigmatism curve of the imaging lens of Example 6 is shown, which indicates meridional field curvature and sagittal field curvature. Figure 12C The distortion curve of the camera lens of Example 6 is shown, which indicates the distortion value corresponding to different field angles. 12A to 12C It can be seen that the photographic lens provided in Example 6 can achieve good imaging quality.

[0160] Example 7

[0161] The following reference Figures 13 to 14C A photographic lens according to Example 7 of the present application is described. Figure 13 A schematic structural diagram of a photographic lens according to Example 7 of the present application is shown.

[0162] like Figure 13 As shown, the photographic lens includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6 and an imaging surface S13.

[0163] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being convex. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being concave and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being concave. The filter E6 has an object-side surface S11 and an image-side surface S12. Light from the object passes through each surface S1 to S12 in sequence and is ultimately imaged on the imaging surface S13.

[0164] In this example, the effective focal length f of the photographic lens is 14.84 mm, the total length TTL of the photographic lens (i.e., the distance from the object-side surface S1 of the first lens E1 to the imaging surface S13 of the photographic lens on the optical axis) is 13.50 mm, half the diagonal length Imgh of the effective pixel area on the imaging surface S13 of the photographic lens is 3.90 mm, and the maximum half field of view Semi-FOV of the photographic lens is 14.6°.

[0165] Table 13 shows the basic parameters of the photographic lens of Example 7, where the units of curvature radius, thickness, and effective focal length are all in millimeters (mm). Tables 14-1 and 14-2 show the high-order coefficients of the various aspherical mirror surfaces that can be used in Example 7, where the surface shapes of the various aspherical surfaces can be defined by formula (1) given in Example 1 above.

[0166]

[0167]

[0168] Table 13

[0169] Face number A4 A6 A8 A10 A12 A14 A16 S1 -6.6577E-04 -1.8121E-04 -5.4133E-05 2.9677E-04 -3.7773E-04 2.5315E-04 -1.0487E-04 S2 8.5970E-03 -2.6053E-02 7.0266E-02 -1.1264E-01 1.1579E-01 -8.0979E-02 3.9903E-02 S3 1.0249E-02 -2.9251E-02 7.8598E-02 -1.2437E-01 1.2257E-01 -7.8127E-02 3.1879E-02 S4 8.0051E-03 -1.1243E-02 3.7168E-02 -7.5001E-02 9.9276E-02 -9.2434E-02 6.3576E-02 S5 1.0225E-02 6.3054E-03 -3.8907E-02 1.7117E-01 -4.5348E-01 7.8686E-01 -9.3937E-01 S6 7.5065E-03 2.4201E-02 -1.4885E-01 6.2308E-01 -1.6763E+00 3.0642E+00 -3.9294E+00 S7 -1.2437E-03 2.4988E-02 -1.5120E-01 4.4408E-01 -9.1158E-01 1.3787E+00 -1.5489E+00 S8 6.8263E-03 1.2731E-02 -1.0868E-01 2.5669E-01 -3.7145E-01 3.8883E-01 -3.1095E-01 S9 -1.9925E-02 -1.0586E-03 -3.2945E-02 7.2155E-02 -5.9126E-02 1.0904E-02 2.0428E-02 S10 -2.6182E-02 -4.2105E-05 1.6386E-02 -4.3155E-02 6.8089E-02 -7.0424E-02 4.9979E-02

[0170] Table 14-1

[0171] Face number A18 A20 A22 A24 A26 A28 A30 S1 2.8249E-05 -4.9716E-06 5.5211E-07 -3.5132E-08 9.7627E-10 0.0000E+00 0.0000E+00 S2 -1.4094E-02 3.5775E-03 -6.4508E-04 8.0222E-05 -6.4920E-06 3.0414E-07 -6.1386E-09 S3 -7.4125E-03 3.3063E-04 3.7832E-04 -1.3245E-04 2.1731E-05 -1.8689E-06 6.7831E-08 S4 -3.3450E-02 1.3691E-02 -4.3296E-03 1.0217E-03 -1.6808E-04 1.7032E-05 -7.9376E-07 S5 7.9118E-01 -4.7453E-01 2.0162E-01 -5.9327E-02 1.1500E-02 -1.3212E-03 6.8146E-05 S6 3.5955E+00 -2.3588E+00 1.1007E+00 -3.5648E-01 7.6135E-02 -9.6393E-03 5.4783E-04 S7 1.2887E+00 -7.8742E-01 3.4764E-01 -1.0764E-01 2.2132E-02 -2.7107E-03 1.4957E-04 S8 1.9067E-01 -8.8074E-02 2.9829E-02 -7.1310E-03 1.1332E-03 -1.0699E-04 4.5271E-06 S9 -2.1354E-02 1.0794E-02 -3.3653E-03 6.7132E-04 -8.2906E-05 5.6937E-06 -1.6173E-07 S10 -2.4994E-02 8.8976E-03 -2.2435E-03 3.9160E-04 -4.5005E-05 3.0634E-06 -9.3569E-08

[0172] Table 14-2

[0173] Figure 14A The axial chromatic aberration curve of the photographic lens of Example 7 is shown, which indicates the deviation of the convergence point of light of different wavelengths passing through the lens. Figure 14B The astigmatism curve of the imaging lens of Example 7 is shown, which indicates meridional field curvature and sagittal field curvature. Figure 14C The distortion curve of the camera lens of Example 7 is shown, which indicates the distortion value corresponding to different field angles. 14A to 14C It can be seen that the photographic lens provided in Example 7 can achieve good imaging quality.

[0174] Example 8

[0175] The following reference Figures 15 to 16C A photographic lens according to Example 8 of the present application is described. Figure 15 A schematic structural diagram of a photographic lens according to Example 8 of the present application is shown.

[0176] like Figure 15 As shown, the photographic lens includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6 and an imaging surface S13.

[0177] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being convex. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being concave and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The filter E6 has an object-side surface S11 and an image-side surface S12. Light from the object passes through each surface S1 to S12 in sequence and is ultimately imaged on the imaging surface S13.

[0178] In this example, the effective focal length f of the photographic lens is 14.84 mm, the total length TTL of the photographic lens (i.e., the distance from the object-side surface S1 of the first lens E1 to the imaging surface S13 of the photographic lens on the optical axis) is 13.50 mm, half the diagonal length Imgh of the effective pixel area on the imaging surface S13 of the photographic lens is 3.90 mm, and the maximum half field of view Semi-FOV of the photographic lens is 14.6°.

[0179] Table 15 shows the basic parameters of the photographic lens of Example 8, where the units of curvature radius, thickness, and effective focal length are all in millimeters (mm). Tables 16-1 and 16-2 show the high-order coefficients of the various aspherical mirror surfaces that can be used in Example 8, where the surface shapes of the various aspherical surfaces can be defined by formula (1) given in Example 1 above.

[0180]

[0181] Table 15

[0182] Face number A4 A6 A8 A10 A12 A14 A16 S1 -6.5711E-04 -1.6290E-04 -1.1352E-04 3.7879E-04 -4.4462E-04 2.8879E-04 -1.1766E-04 S2 1.1086E-02 -3.6790E-02 9.3971E-02 -1.4674E-01 1.5005E-01 -1.0571E-01 5.2939E-02 S3 1.2958E-02 -4.1119E-02 1.0603E-01 -1.6602E-01 1.6693E-01 -1.1217E-01 5.1002E-02 S4 8.6223E-03 -1.4279E-02 4.6869E-02 -9.6503E-02 1.3383E-01 -1.3331E-01 9.9500E-02 S5 1.0200E-02 5.1843E-03 -3.3944E-02 1.5673E-01 -4.2431E-01 7.4549E-01 -8.9753E-01 S6 7.3640E-03 2.3532E-02 -1.4754E-01 6.2299E-01 -1.6820E+00 3.0794E+00 -3.9509E+00 S7 -4.8417E-04 2.0575E-02 -1.3992E-01 4.3073E-01 -9.1275E-01 1.4073E+00 -1.5960E+00 S8 1.0849E-02 -1.5500E-02 -2.2552E-02 1.0090E-01 -1.8599E-01 2.3780E-01 -2.2675E-01 S9 -1.5249E-02 -3.5059E-02 7.1770E-02 -1.2255E-01 1.8529E-01 -2.0684E-01 1.6142E-01 S10 -2.5857E-02 -2.1970E-03 2.1214E-02 -4.9411E-02 7.3186E-02 -7.2969E-02 5.0575E-02

[0183] Table 16-1

[0184] Face number A18 A20 A22 A24 A26 A28 A30 S1 3.1371E-05 -5.4813E-06 6.0544E-07 -3.8365E-08 1.0627E-09 0.0000E+00 0.0000E+00 S2 -1.9146E-02 5.0149E-03 -9.4162E-04 1.2338E-04 -1.0691E-05 5.4933E-07 -1.2633E-08 S3 -1.5332E-02 2.7466E-03 -1.5817E-04 -4.8051E-05 1.2814E-05 -1.3010E-06 5.1346E-08 S4 -5.6937E-02 2.5039E-02 -8.3137E-03 2.0072E-03 -3.3056E-04 3.3027E-05 -1.5041E-06 S5 7.6074E-01 -4.5858E-01 1.9567E-01 -5.7784E-02 1.1237E-02 -1.2947E-03 6.6960E-05 S6 3.6148E+00 -2.3703E+00 1.1052E+00 -3.5756E-01 7.6271E-02 -9.6428E-03 5.4715E-04 S7 1.3312E+00 -8.1166E-01 3.5653E-01 -1.0963E-01 2.2355E-02 -2.7131E-03 1.4825E-04 S8 1.5989E-01 -8.1842E-02 2.9807E-02 -7.4980E-03 1.2352E-03 -1.1967E-04 5.1620E-06 S9 -8.8340E-02 3.4110E-02 -9.2341E-03 1.7096E-03 -2.0521E-04 1.4294E-05 -4.3454E-07 S10 -2.4870E-02 8.7406E-03 -2.1810E-03 3.7733E-04 -4.3028E-05 2.9084E-06 -8.8262E-08

[0185] Table 16-2

[0186] Figure 16A The axial chromatic aberration curve of the photographic lens of Example 8 is shown, which indicates the deviation of the convergence point of light of different wavelengths passing through the lens. Figure 16B The astigmatism curve of the imaging lens of Example 8 is shown, which indicates meridional field curvature and sagittal field curvature. Figure 16C The distortion curve of the camera lens of Example 8 is shown, which indicates the distortion value corresponding to different field angles. 16A to 16C It can be seen that the photographic lens provided in Example 8 can achieve good imaging quality.

[0187] Example 9

[0188] The following reference Figures 17 to 18C A photographic lens according to Embodiment 9 of the present application is described. Figure 17 A schematic structural diagram of a photographic lens according to Example 9 of the present application is shown.

[0189] like Figure 17 As shown, the photographic lens includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6 and an imaging surface S13.

[0190] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being convex. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being concave and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being concave. The filter E6 has an object-side surface S11 and an image-side surface S12. Light from the object passes through each surface S1 to S12 in sequence and is ultimately imaged on the imaging surface S13.

[0191] In this example, the effective focal length f of the photographic lens is 14.84 mm, the total length TTL of the photographic lens (i.e., the distance from the object-side surface S1 of the first lens E1 to the imaging surface S13 of the photographic lens on the optical axis) is 13.50 mm, half the diagonal length Imgh of the effective pixel area on the imaging surface S13 of the photographic lens is 3.90 mm, and the maximum half field of view Semi-FOV of the photographic lens is 14.6°.

[0192] Table 17 shows the basic parameters of the photographic lens of Example 9, where the units of curvature radius, thickness, and effective focal length are all in millimeters (mm). Tables 18-1 and 18-2 show the high-order coefficients of the various aspherical mirror surfaces that can be used in Example 9, where the surface shapes of the various aspherical surfaces can be defined by formula (1) given in Example 1 above.

[0193]

[0194] Table 17

[0195] Face number A4 A6 A8 A10 A12 A14 A16 S1 -6.7697E-04 -2.5024E-04 2.7274E-04 -1.8239E-04 1.3735E-05 5.1589E-05 -3.5928E-05 S2 8.8239E-04 8.1152E-03 -7.1308E-04 -2.5212E-02 4.6274E-02 -4.4128E-02 2.7019E-02 S3 2.9895E-03 4.8983E-03 1.0046E-02 -4.9311E-02 7.8809E-02 -7.2342E-02 4.3390E-02 S4 7.6229E-03 -6.8609E-03 3.4635E-02 -9.8137E-02 1.7280E-01 -2.0768E-01 1.7898E-01 S5 1.0797E-02 6.7436E-03 -4.4192E-02 1.8360E-01 -4.6423E-01 7.7400E-01 -8.9152E-01 S6 8.7863E-03 1.5966E-02 -1.0401E-01 4.4637E-01 -1.2091E+00 2.2064E+00 -2.8105E+00 S7 -2.7624E-03 3.4600E-02 -1.9444E-01 5.6208E-01 -1.1326E+00 1.6751E+00 -1.8403E+00 S8 4.1282E-04 5.8795E-02 -2.6166E-01 5.5984E-01 -7.6850E-01 7.4837E-01 -5.4017E-01 S9 -2.9542E-02 5.1286E-02 -1.9974E-01 3.9559E-01 -4.7734E-01 3.8980E-01 -2.2622E-01 S10 -2.9261E-02 4.4138E-03 8.4145E-03 -3.4139E-02 6.3278E-02 -7.1394E-02 5.3603E-02

[0196] Table 18-1

[0197] Face number A18 A20 A22 A24 A26 A28 A30 S1 1.2319E-05 -2.5073E-06 3.0724E-07 -2.0985E-08 6.1482E-10 0.0000E+00 0.0000E+00 S2 -1.1384E-02 3.3858E-03 -7.1183E-04 1.0371E-04 -9.9763E-06 5.7033E-07 -1.4686E-08 S3 -1.7838E-02 5.0946E-03 -1.0003E-03 1.3010E-04 -1.0343E-05 4.1910E-07 -4.8295E-09 S4 -1.1323E-01 5.2859E-02 -1.8015E-02 4.3576E-03 -7.0817E-04 6.9260E-05 -3.0772E-06 S5 7.2689E-01 -4.2332E-01 1.7515E-01 -5.0320E-02 9.5481E-03 -1.0762E-03 5.4583E-05 S6 2.5471E+00 -1.6523E+00 7.6162E-01 -2.4349E-01 5.1308E-02 -6.4055E-03 3.5875E-04 S7 1.5007E+00 -9.0104E-01 3.9161E-01 -1.1946E-01 2.4196E-02 -2.9163E-03 1.5810E-04 S8 2.9359E-01 -1.2001E-01 3.6334E-02 -7.8870E-03 1.1572E-03 -1.0239E-04 4.1101E-06 S9 9.5262E-02 -2.9255E-02 6.5127E-03 -1.0325E-03 1.1210E-04 -7.6097E-06 2.4772E-07 S10 -2.7931E-02 1.0273E-02 -2.6614E-03 4.7555E-04 -5.5797E-05 3.8694E-06 -1.2021E-07

[0198] Table 18-2 Figure 18A The axial chromatic aberration curve of the photographic lens of Example 9 is shown, which indicates the deviation of the convergence point of light of different wavelengths passing through the lens. Figure 18B The astigmatism curve of the imaging lens of Example 9 is shown, which indicates meridional field curvature and sagittal field curvature. Figure 18C The distortion curve of the camera lens of Example 9 is shown, which indicates the distortion value corresponding to different field angles. 18A to 18C It can be seen that the photographic lens provided in Example 9 can achieve good imaging quality.

[0199] In summary, Examples 1 to 9 respectively satisfy the relationships shown in Table 19.

[0200]

[0201] Table 19

[0202] 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 above-described photographic lens.

[0203] 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. A photographic lens, characterized in that: Along the optical axis from the object side to the image side, it includes: The first lens has positive refractive power, and its object-side surface is convex and its image-side surface is convex; a second lens having negative optical power, the object-side surface of which is convex and the image-side surface of which is concave; The third lens has a negative optical power, with a convex object-side surface and a concave image-side surface; a fourth lens element having positive optical power, with a concave object-side surface and a convex image-side surface; and The fifth lens element has a concave image side surface; wherein, The number of lenses having optical power in the photographic lens is five; The distance BFL from the image side surface of the fifth lens to the imaging surface of the photographic lens on the optical axis, the distance TD from the object side surface of the first lens to the image side surface of the fifth lens on the optical axis, the effective focal length fa of the lens with the smallest Abbe coefficient from the first lens to the fifth lens, and the effective focal length f of the photographic lens satisfy the following conditions: 1.02≤BFL / TD<1.1 and 1.60≤fa / f≤3.27; The combined focal length f123 of the first lens, the second lens, and the third lens, the combined focal length f45 of the fourth lens and the fifth lens, and the effective focal length f of the photographic lens satisfy the following: 3.36≤f123 / f+f45 / f≤4.81; The effective focal length f2 of the second lens and the effective focal length f3 of the third lens satisfy the following: 0.46≤f2 / f3≤0.

63.

2. The photographic lens according to claim 1, wherein: The axial distance TD from the object side surface of the first lens to the image side surface of the fifth lens and half the diagonal length Imgh of the effective pixel area on the imaging surface of the photographic lens satisfy the following: 1.68≤TD / Imgh≤1.

71.

3. The photographic lens according to claim 1, wherein: A center thickness CT1 of the first lens on the optical axis and an edge thickness ET3 of the third lens satisfy the following: 3.16≤CT1 / ET3≤7.

54.

4. The photographic lens according to claim 1, wherein: The combined focal length f34 of the third lens and the fourth lens, the effective focal length f3 of the third lens, and the refractive index N3 of the third lens satisfy the following: 2.29≤f34 / f3×N3≤5.

91.

5. The photographic lens according to claim 1, wherein: The effective focal length f1 of the first lens, the effective focal length f2 of the second lens, and the effective focal length f4 of the fourth lens satisfy the following: 0.27≤(f1-f2) / f4≤0.

52.

6. The photographic lens according to claim 1, wherein: The curvature radius R4 of the image side surface of the second lens and the curvature radius R10 of the image side surface of the fifth lens satisfy: <R4 / R10≤0.46。 7. The photographic lens according to claim 1, wherein: The center thickness CT1 of the first lens on the optical axis and the effective focal length f of the photographic lens satisfy the following: 0.24≤(CT1+CT2+CT3+CT4+CT5) / f<0.

3.

8. The photographic lens according to claim 1, wherein: The maximum half field of view Semi-FOV of the photographic lens, the curvature radius R9 of the object side surface of the fifth lens, and the curvature radius R10 of the image side surface of the fifth lens satisfy: -3.33≤TAN(Semi-FOV)×(R9+R10) / (R9-R10)≤0.

97.

9. The photographic lens according to any one of claims 1 to 8, wherein: An air interval T34 between the third lens and the fourth lens on the optical axis and an air interval T12 between the first lens and the second lens on the optical axis satisfy the following: 12.85≤T34 / T12≤18.

89.

10. The photographic lens according to any one of claims 1 to 8, wherein: The Abbe coefficient V1 of the first lens, the Abbe coefficient V2 of the second lens, the Abbe coefficient V3 of the third lens, the Abbe coefficient V4 of the fourth lens, and the Abbe coefficient V5 of the fifth lens satisfy: 3.40≤(V1+V3+V5) / (V2+V4)≤3.

72.

11. The photographic lens according to any one of claims 1 to 8, wherein: The center thickness CT1 of the first lens on the optical axis and the center thickness CT5 of the fifth lens on the optical axis satisfy: 0.3 <CT5 / CT1≤0.41。 12. The photographic lens according to any one of claims 1 to 8, wherein: Among the first to fifth lenses, a curvature radius Rx of the object-side surface of the lens with the smallest central thickness on the optical axis and a curvature radius Ry of the image-side surface thereof satisfy: 2.17≤Rx / Ry<2.

7.

13. The photographic lens according to any one of claims 1 to 8, wherein: The sum ΣCT of the center thicknesses of the first lens to the fifth lens on the optical axis and the distance TD from the object side surface of the first lens to the image side surface of the fifth lens on the optical axis satisfy the following: 0.5<ΣCT / TD<0.

65.

14. The photographic lens according to any one of claims 1 to 8, wherein: An axial distance SAG11 between an intersection of the object side surface of the first lens and the optical axis and an effective radius vertex of the object side surface of the first lens and a curvature radius R1 of the object side surface of the first lens satisfy: 0.26≤|SAG11 / R1|<0.

3.

15. The photographic lens according to any one of claims 1 to 8, wherein: The refractive index Nmax of the lens with the largest refractive index among the first lens to the fifth lens, the curvature radius Ra of the object side surface of the lens with the largest refractive index, and the curvature radius Rb of the image side surface satisfy: 1.7 <Nmax×Ra / Rb≤2。

Images