Optical imaging lens

Abstract

The present application discloses an optical imaging lens, which comprises, in order from the object side to the image side along the optical axis: a first lens having positive optical power; a second lens having negative optical power; a third lens having optical power, whose object-side surface is convex and whose image-side surface is concave; a fourth lens having optical power, whose object-side surface is convex and whose image-side surface is concave; a fifth lens having negative optical power, whose object-side surface is convex and whose image-side surface is concave; and a sixth lens having optical power. The distance TTL from the object-side surface of the first lens to the imaging plane of the optical imaging lens on the optical axis and the total effective focal length f of the optical imaging lens satisfy the following conditions: TTL / f<1.0; the curvature radius R5 of the object-side surface of the third lens, the curvature radius R6 of the image-side surface of the third lens, and the center thickness CT3 of the third lens on the optical axis satisfy the following conditions: 1.5<(R5+R6) / (10×CT3)<5.5.

Description

Technical Field

[0001] The present application relates to the field of optical elements, and more specifically, to an optical imaging lens. Background Art

[0002] In recent years, with the rapid upgrading of smart electronic devices such as mobile phones, computers, and tablets, the market demand for camera functions suitable for portable electronic products has gradually increased and put forward higher requirements. The camera module is usually equipped with a charge-coupled device (CCD) type image sensor or a complementary metal oxide semiconductor (CMOS) type image sensor, and is equipped with an optical imaging lens. The optical imaging lens can collect light from the object side. The imaging light travels along the optical path of the optical imaging lens and illuminates the image sensor. The image sensor then converts the light signal into an electrical signal to form image data.

[0003] Optical imaging lenses come in a wide variety of types. For example, mid- to long-focus lenses, wide-angle lenses, and large-aperture lenses are currently popular among consumers and mobile phone manufacturers. Long-focus lenses are primarily used for close-ups, compression shots, and shallow depth of field shots, while large-aperture lenses ensure sufficient light throughput to ensure high illumination on the image plane. To achieve a wider range of imaging effects, current mobile phones often combine multiple lenses, such as a long-focus lens and a large-aperture lens. Camera modules with multiple lenses typically take up a considerable amount of space.

[0004] Under the premise of ensuring excellent imaging quality, it is necessary to have an optical imaging lens that can achieve telephoto characteristics while having large aperture characteristics. Summary of the Invention

[0005] The present application provides an optical imaging lens 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.

[0006] The present application provides an optical imaging lens, which includes, in order from the object side to the image side along the optical axis: a first lens having positive optical power; a second lens having negative optical power; a third lens having optical power, whose object-side surface may be convex and whose image-side surface may be concave; a fourth lens having optical power, whose object-side surface may be convex and whose image-side surface may be concave; a fifth lens having negative optical power, whose object-side surface may be convex and whose image-side surface may be concave; and a sixth lens having optical power; a distance TTL from the object-side surface of the first lens to the imaging plane of the optical imaging lens on the optical axis and a total effective focal length f of the optical imaging lens satisfy the following conditions: TTL / f<1.0; a curvature radius R5 of the object-side surface of the third lens, a curvature radius R6 of the image-side surface of the third lens, and a center thickness CT3 of the third lens on the optical axis may satisfy the following conditions: 1.5<(R5+R6) / (10×CT3)<5.5.

[0007] In one embodiment, at least one aspherical mirror surface is provided from the object side surface of the first lens to the image side surface of the sixth lens.

[0008] In one embodiment, the effective focal length f1 of the first lens, the effective focal length f5 of the fifth lens, and the effective focal length f2 of the second lens may satisfy: 1.2<f1 / (f5-f2)<2.3.

[0009] In one embodiment, a curvature radius R6 of the image-side surface of the third lens and a curvature radius R5 of the object-side surface of the third lens may satisfy: 0.4<R6 / R5<1.5.

[0010] In one embodiment, a curvature radius R8 of the image-side surface of the fourth lens and a curvature radius R7 of the object-side surface of the fourth lens may satisfy: 0.6<R8 / R7<1.2.

[0011] In one embodiment, the effective focal length f5 of the fifth 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 may satisfy: -1.0<f5 / (R9+R10)<-0.2.

[0012] In one embodiment, the spacing distance T23 between the second lens and the third lens on the optical axis, the spacing distance T34 between the third lens and the fourth lens on the optical axis, the spacing distance T45 between the fourth lens and the fifth lens on the optical axis, and the spacing distance T56 between the fifth lens and the sixth lens on the optical axis may satisfy: 0.8<(T23+T34) / (T45+T56)<1.4.

[0013] In one embodiment, the effective semi-aperture DT62 of the image-side surface of the sixth lens, the effective semi-aperture DT31 of the object-side surface of the third lens, and the effective semi-aperture DT32 of the image-side surface of the third lens may satisfy: 0.8<DT62 / (DT31+DT32)<1.2.

[0014] In one embodiment, the combined focal length f12 of the first lens and the second lens and the combined focal length f56 of the fifth lens and the sixth lens may satisfy: -1.0<f12 / f56<-0.6.

[0015] In one embodiment, the on-axis distance SAG51 between the intersection of the object side surface of the fifth lens and the optical axis to the effective radius vertex of the object side surface of the fifth lens and the on-axis distance SAG41 between the intersection of the object side surface of the fourth lens and the optical axis to the effective radius vertex of the object side surface of the fourth lens may satisfy: 2.2<SAG51 / SAG41<2.9.

[0016] In one embodiment, an edge thickness ET2 of the second lens and a center thickness CT2 of the second lens on the optical axis may satisfy: 0.9<ET2 / CT2<1.7.

[0017] In one embodiment, an edge thickness ET5 of the fifth lens and a center thickness CT6 of the sixth lens on the optical axis may satisfy: 0.5<ET5 / CT6<1.2.

[0018] The present application also provides an optical imaging lens, which includes, in order from the object side to the image side along the optical axis: a first lens with positive optical power; a second lens with negative optical power; a third lens with optical power, whose object-side surface can be convex and whose image-side surface can be concave; a fourth lens with optical power, whose object-side surface can be convex and whose image-side surface can be concave; a fifth lens with negative optical power, whose object-side surface can be convex and whose image-side surface can be concave; and a sixth lens with optical power; the distance TTL from the object-side surface of the first lens to the imaging plane of the optical imaging lens on the optical axis and the total effective focal length f of the optical imaging lens can satisfy the following: TTL / f<1.0; the combined focal length f12 of the first lens and the second lens and the combined focal length f56 of the fifth lens and the sixth lens satisfy the following: -1.0<f12 / f56<-0.6.

[0019] This application uses six lenses. By rationally allocating the optical power, surface shape, center thickness of each lens, and on-axis spacing between lenses, the optical imaging lens has at least one beneficial effect of long focal length, large aperture, and good 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 according to Example 1 of the present application; Figures 2A to 2Daxial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 1 are respectively shown;

[0022] Figure 3 1 shows a schematic structural diagram of an optical imaging lens according to Example 2 of the present application; Figures 4A to 4D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 2 are respectively shown;

[0023] Figure 5 1 shows a schematic structural diagram of an optical imaging lens according to Example 3 of the present application; 6A to 6D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 3 are respectively shown;

[0024] Figure 7 1 shows a schematic structural diagram of an optical imaging lens according to Example 4 of the present application; Figures 8A to 8D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 4 are respectively shown;

[0025] Figure 9 1 shows a schematic structural diagram of an optical imaging lens according to Example 5 of the present application; 10A to 10D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 5 are respectively shown;

[0026] Figure 11 1 shows a schematic structural diagram of an optical imaging lens according to Example 6 of the present application; 12A to 12D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 6 are respectively shown;

[0027] Figure 13 1 shows a schematic structural diagram of an optical imaging lens according to Example 7 of the present application; 14A to 14D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 7 are respectively shown. DETAILED DESCRIPTION

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] The features, principles and other aspects of the present application are described in detail below.

[0036] An optical imaging lens according to an exemplary embodiment of the present application may include, for example, six lenses having optical power, namely, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. These six lenses are arranged sequentially along the optical axis from the object side to the image side. At least one of the first through sixth lenses has an aspherical mirror surface. Any two adjacent lenses in the first through sixth lenses may have an air gap between them.

[0037] In an exemplary embodiment, the first lens may have positive optical power; the second lens may have negative optical power; the third lens may have positive or negative optical power, and its object-side surface may be convex and its image-side surface may be concave; the fourth lens may have positive or negative optical power, and its object-side surface may be convex and its image-side surface may be concave; the fifth lens may have negative optical power, and its object-side surface may be convex and its image-side surface may be concave; and the sixth lens may have positive or negative optical power. By properly allocating the positive and negative optical powers of the first and second lenses in the optical imaging lens, the spherical aberration and chromatic aberration of the optical imaging lens can be effectively balanced, resulting in better imaging quality and processability. Properly allocating the surface shapes of the third, fourth, and fifth lenses can effectively balance the spherical aberration and astigmatism generated by these three lenses, improving the imaging quality of the optical imaging lens. This also helps ensure the deflection path of the imaging light.

[0038] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the conditional equation: TTL / f < 1.0, where TTL is the on-axis distance from the object-side surface of the first lens element to the imaging surface, and f is the total effective focal length of the optical imaging lens. Satisfying TTL / f < 1.0 facilitates achieving telephoto characteristics in the optical imaging lens. More specifically, TTL may satisfy 0.9 < TTL / f < 1.0.

[0039] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the conditional equation: 1.5 < (R5 + R6) / (10 * CT3) < 5.5, where R5 is the radius of curvature of the object-side surface of the third lens element, R6 is the radius of curvature of the image-side surface of the third lens element, and CT3 is the center thickness of the third lens element along the optical axis. More specifically, R5, R6, and CT3 may further satisfy the conditional equation: 1.6 < (R5 + R6) / (10 * CT3) < 2.6. By controlling the ratio of the radius of curvature of the third lens element's mirror surface to its center thickness, the optical sensitivity of the third lens element can be reduced while also controlling the range of its field curvature contribution, thereby improving the imaging quality of the optical imaging lens.

[0040] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the conditional equation: 1.2 < f1 / (f5 - f2) < 2.3, where f1 is the effective focal length of the first lens element, f5 is the effective focal length of the fifth lens element, and f2 is the effective focal length of the second lens element. By satisfying 1.2 < f1 / (f5 - f2) < 2.3, the spherical aberration contribution of these lenses can be effectively controlled within a certain range, thereby facilitating good imaging quality within the on-axis field of view.

[0041] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the conditional equation: 0.4 < R6 / R5 < 1.5, where R6 is the radius of curvature of the image-side surface of the third lens element, and R5 is the radius of curvature of the object-side surface of the third lens element. More specifically, R5 and R5 may further satisfy the condition: 0.4 < R6 / R5 ≤ 1.4. By controlling the ratio of the radii of curvature of the two mirror surfaces of the third lens element, the deflection angle of the imaging light after passing through the third lens element can be effectively controlled, thereby effectively reducing the sensitivity of the optical imaging lens and ensuring that the field curvature contribution of the third lens element is within a reasonable range.

[0042] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy the conditional equation: 0.6 < R8 / R7 < 1.2, where R8 is the radius of curvature of the image-side surface of the fourth lens element, and R7 is the radius of curvature of the object-side surface of the fourth lens element. By controlling the ratio of the radii of curvature of the two mirror surfaces of the fourth lens element, the curvature of the fourth lens element can be controlled, thereby effectively reducing the optical sensitivity of the fourth lens element, thereby ensuring good processing performance and ensuring that the light rays from each field of view of the optical imaging lens better match the chief ray angle (CRA) of the photosensitive chip when they reach the imaging surface.

[0043] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the conditional equation: -1.0 < f5 / (R9 + R10) < -0.2, where f5 is the effective focal length of the fifth lens element, R9 is the radius of curvature of the object-side surface of the fifth lens element, and R10 is the radius of curvature of the image-side surface of the fifth lens element. By satisfying -1.0 < f5 / (R9 + R10) < -0.2, the curvature of the fifth lens element, and thus the field curvature contribution of the fifth lens element, can be controlled, effectively reducing the optical sensitivity of the fifth lens element and achieving better manufacturability.

[0044] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the conditional equation: 0.8 < (T23 + T34) / (T45 + T56) < 1.4, where T23 is the air spacing on the optical axis between the second and third lenses, T34 is the air spacing on the optical axis between the third and fourth lenses, T45 is the air spacing on the optical axis between the fourth and fifth lenses, and T56 is the air spacing on the optical axis between the fifth and sixth lenses. By satisfying 0.8 < (T23 + T34) / (T45 + T56) < 1.4, the space occupied by the second through sixth lenses can be effectively controlled, thereby facilitating lens assembly processes and miniaturization of the optical imaging lens.

[0045] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the conditional formula: 0.8 < DT62 / (DT31 + DT32) < 1.2, wherein DT62 is the effective semi-aperture of the image-side surface of the sixth lens, DT31 is the effective semi-aperture of the object-side surface of the third lens, and DT32 is the effective semi-aperture of the image-side surface of the third lens. More specifically, DT62, DT31, and DT32 may further satisfy: 0.9 ≤ DT62 / (DT31 + DT32) < 1.2. By controlling the effective semi-apertures of the two mirror surfaces of the third lens and the effective semi-aperture of the image-side surface of the sixth lens to match, on the one hand, it is possible to avoid excessive differences in the apertures of the third and sixth lenses, thereby ensuring assembly stability; on the other hand, it is beneficial to limit the range of incident light to eliminate light with poor edge quality, thereby reducing off-axis aberrations and effectively improving the resolution of the optical imaging lens. In addition, it also helps to ensure the aperture of the optical imaging lens.

[0046] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the condition: -1.0 < f12 / f56 < -0.6, where f12 is the combined focal length of the first and second lenses, and f56 is the combined focal length of the fifth and sixth lenses. Satisfying the condition -1.0 < f12 / f56 < -0.6 effectively distributes the focal lengths of the various lenses, thereby reducing the sensitivity of the optical imaging lens and avoiding overly stringent tolerance requirements. It also manages the spherical aberration contribution of these lenses, resulting in improved imaging quality.

[0047] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the conditional formula: 2.2 < SAG51 / SAG41 < 2.9, where SAG51 is the on-axis distance between the intersection of the fifth lens objective side and the optical axis and the vertex of the effective radius of the fifth lens objective side, and SAG41 is the on-axis distance between the intersection of the fourth lens objective side and the optical axis and the vertex of the effective radius of the fourth lens objective side. By satisfying 2.2 < SAG51 / SAG41 < 2.9, the field curvature, on-axis spherical aberration, and chromatic aberration of the optical imaging lens can be easily balanced, thereby achieving good imaging quality and low lens sensitivity, thereby better ensuring the processability of the optical imaging lens.

[0048] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the conditional equation: 0.9 < ET2 / CT2 < 1.7, where ET2 is the edge thickness of the second lens element, and CT2 is the center thickness of the second lens element along the optical axis. This conditional equation helps ensure the processing, molding, and assembly performance of the second lens element, thereby achieving good imaging quality and minimizing the front end size of the optical imaging lens.

[0049] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the conditional equation: 0.5 < ET5 / CT6 < 1.2, where ET5 is the edge thickness of the fifth lens element, and CT6 is the center thickness of the sixth lens element along the optical axis. Meeting 0.5 < ET5 / CT6 < 1.2 helps ensure the processing, molding, and assembly performance of the optical imaging lens, thereby achieving good imaging quality. However, an unreasonable ratio may lead to difficulties in adjusting the surface shape of the molded lens, and may lead to significant and easily deformed lenses after assembly, thus compromising the imaging quality of the optical imaging lens.

[0050] In an exemplary embodiment, the optical imaging lens may further include at least one aperture. The aperture may be positioned appropriately as needed, for example, between the object side and the first lens element. Optionally, the optical imaging lens may further include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element on the imaging surface.

[0051] The optical imaging lens according to the above-described embodiment of the present application can utilize multiple lenses, such as the six lenses described above. By rationally allocating the focal power, surface shape, center thickness of each lens, and the on-axis spacing between lenses, the size of the imaging lens can be effectively reduced, the sensitivity of the imaging lens can be reduced, and the processability of the imaging lens can be improved, making the optical imaging lens more convenient for production and processing and suitable for use in portable electronic products. Furthermore, the optical imaging lens of the present application also exhibits excellent optical properties such as telephoto characteristics, large aperture, and high imaging quality.

[0052] In an embodiment of the present application, at least one of the mirror surfaces of each lens is an aspherical mirror surface, that is, at least one of the object side surface of the first lens to the image side surface of the sixth lens is an aspherical mirror 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, 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 and the sixth lens is an aspherical mirror surface. 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 and the sixth lens are all aspherical mirror surfaces.

[0053] However, those skilled in the art will appreciate that the number of lenses comprising the optical imaging 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 six lenses as an example, the optical imaging lens is not limited to six lenses. If desired, the optical imaging lens may include other numbers of lenses. Specific embodiments of optical imaging lenses applicable to the above-described embodiments are further described below with reference to the accompanying drawings.

[0054] Example 1

[0055] The following reference Figures 1 to 2D The optical imaging lens according to Example 1 of the present application is described. Figure 1 A schematic structural diagram of an optical imaging lens according to Example 1 of the present application is shown.

[0056] like Figure 1 As shown, the optical imaging lens includes, 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 and a filter E7.

[0057] 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 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 positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being convex. The filter E7 has an object-side surface S13 and an image-side surface S14. The optical imaging lens has an imaging surface S15, and light from an object sequentially passes through each of surfaces S1 to S14 and is ultimately imaged on the imaging surface S15.

[0058] Table 1 shows the basic parameters of the optical imaging lens of Example 1, wherein the units of curvature radius, thickness / distance and focal length are all millimeters (mm).

[0059]

[0060] Table 1

[0061] In this embodiment, the total effective focal length f of the optical imaging lens is 6.65 mm, the on-axis distance TTL from the object-side surface S1 of the first lens element E1 to the imaging surface S15 is 6.03 mm, and the half-diagonal length of the effective pixel area on the imaging surface S15, ImgH, is 3.07 mm.

[0062] In Example 1, the object-side surface and the image-side surface of any lens among the first lens E1 to the sixth lens E6 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:

[0063]

[0064] 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 conic coefficient; 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 .

[0065] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -2.8354E-04 -1.3343E-02 2.8542E-02 -4.3743E-02 4.0962E-02 -2.4693E-02 9.6299E-03 -2.5744E-03 5.4216E-04 S2 1.0537E-01 -3.1482E-01 5.7282E-01 -6.4029E-01 4.5411E-01 -2.0445E-01 5.6430E-02 -8.6865E-03 5.7014E-04 S3 6.6645E-02 -2.6457E-01 4.8541E-01 -4.4218E-01 1.7493E-01 2.8035E-02 -5.5510E-02 1.9673E-02 -2.1511E-03 S4 -2.8070E-02 8.4479E-02 -3.5963E-01 1.0675E+00 -1.7185E+00 1.6029E+00 -8.4763E-01 2.1774E-01 -9.7580E-03 S5 -1.6869E-02 -2.4927E-02 3.2481E-01 -9.2593E-01 1.6426E+00 -1.8157E+00 1.2047E+00 -4.2767E-01 5.3519E-02 S6 -8.6449E-02 7.2659E-02 -1.3988E-01 3.5027E-01 -5.5945E-01 5.1214E-01 -2.5774E-01 5.7051E-02 -1.5709E-03 S7 -2.3587E-01 -7.0239E-02 2.9250E-01 -7.9107E-01 1.3210E+00 -1.2502E+00 5.5645E-01 -6.6595E-02 1.0628E-03 S8 -1.9387E-01 4.8284E-02 -4.5169E-02 1.2832E-01 -1.2877E-01 6.9155E-02 -3.0554E-02 1.6560E-02 -4.3507E-03 S9 -4.7610E-01 4.6426E-01 2.7447E-01 -3.6631E+00 9.6420E+00 -1.3809E+01 1.1787E+01 -5.3063E+00 9.0861E-03 S10 -5.7223E-01 9.7513E-01 -1.3437E+00 9.9517E-01 1.2162E-01 -1.1585E+00 1.3876E+00 -9.5616E-01 4.3657E-01 S11 -1.3569E-01 1.6702E-01 1.9830E-02 -3.0418E-01 4.2940E-01 -3.4276E-01 1.8301E-01 -6.8848E-02 1.8534E-02 S12 -1.4861E-01 1.7449E-01 -2.1791E-01 2.6178E-01 -2.3806E-01 1.5235E-01 -6.8731E-02 2.2081E-02 -5.0638E-03

[0066] Table 2

[0067] Figure 2A The axial chromatic aberration curve of the optical imaging lens of Example 1 is shown, which indicates the deviation of the convergent focus of light of different wavelengths passing through the lens. Figure 2B The astigmatism curve of the optical imaging lens 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 of Example 1 is shown, which represents the distortion magnitude values corresponding to different field angles. Figure 2D The chromatic aberration curve of the optical imaging lens of Example 1 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. Figures 2A to 2D It can be seen that the optical imaging lens provided in Example 1 can achieve good imaging quality.

[0068] Example 2

[0069] The following reference Figures 3 to 4D The optical imaging lens 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 Example 1 will be omitted. Figure 3 A schematic structural diagram of an optical imaging lens according to Example 2 of the present application is shown.

[0070] like Figure 3 As shown, the optical imaging lens includes, 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 and a filter E7.

[0071] 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 concave and its image-side surface S12 being convex. The filter E7 has an object-side surface S13 and an image-side surface S14. The optical imaging lens has an imaging surface S15, and light from an object sequentially passes through each of surfaces S1 to S14 and is ultimately imaged on the imaging surface S15.

[0072] In this embodiment, the total effective focal length f of the optical imaging lens is 6.23 mm, the on-axis distance TTL from the object-side surface S1 of the first lens element E1 to the imaging surface S15 is 5.87 mm, and the half-diagonal length of the effective pixel area on the imaging surface S15, ImgH, is 3.07 mm.

[0073] Table 3 shows the basic parameters of the optical imaging lens of Example 2, where the units of curvature radius, thickness / distance, and focal length are all in millimeters (mm). Table 4 shows the high-order coefficients of each aspherical mirror surface 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.

[0074]

[0075] Table 3

[0076] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -1.6636E-03 -5.6089E-03 1.2758E-02 -2.1640E-02 2.1361E-02 -1.3090E-02 4.8074E-03 -9.8453E-04 8.5961E-05 S2 1.2080E-02 7.7237E-03 -1.7925E-02 2.0092E-02 -1.3374E-02 4.7882E-03 -7.9726E-04 3.0299E-05 3.9630E-06 S3 -1.4738E-02 3.2687E-02 -8.8563E-03 -1.7961E-02 3.7117E-02 -3.3011E-02 1.5691E-02 -3.8483E-03 3.8563E-04 S4 -2.8966E-02 5.6990E-02 -6.6561E-02 1.4416E-01 -2.2052E-01 2.1831E-01 -1.2986E-01 4.1862E-02 -5.5869E-03 S5 -4.0084E-03 -2.2234E-02 2.0968E-01 -5.4275E-01 8.8924E-01 -9.1126E-01 5.7152E-01 -2.0056E-01 3.0327E-02 S6 -4.9861E-02 4.1761E-02 -8.5208E-02 2.0986E-01 -3.5966E-01 3.9541E-01 -2.6622E-01 1.0019E-01 -1.6270E-02 S7 -1.9863E-01 -9.6725E-02 4.9802E-01 -1.4017E+00 2.2966E+00 -2.3437E+00 1.4516E+00 -5.0285E-01 7.6285E-02 S8 -1.5434E-01 2.0925E-02 9.5885E-02 -2.9226E-01 4.4676E-01 -4.0202E-01 2.1578E-01 -6.3256E-02 7.8940E-03 S9 -2.9420E-01 2.0856E-01 -2.5676E-01 2.6528E-01 -2.0031E-01 1.0568E-01 -3.7136E-02 7.5610E-03 -6.4248E-04 S10 -3.5788E-01 4.1190E-01 -3.9487E-01 2.0126E-01 5.9038E-02 -1.9675E-01 1.7384E-01 -9.1255E-02 3.1936E-02 S11 -1.0189E-01 8.7892E-02 1.3005E-01 -4.2507E-01 5.4842E-01 -4.3856E-01 2.4007E-01 -9.3212E-02 2.5941E-02 S12 -1.7579E-01 2.0494E-01 -2.5235E-01 2.9635E-01 -2.7001E-01 1.7586E-01 -8.1138E-02 2.6678E-02 -6.2612E-03

[0077] Table 4

[0078] Figure 4A The axial chromatic aberration curve of the optical imaging lens of Example 2 is shown, which indicates the deviation of the convergent focus of light of different wavelengths passing through the lens. Figure 4B The astigmatism curve of the optical imaging lens 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 of Example 2 is shown, which represents the distortion magnitude values corresponding to different field angles. Figure 4D The chromatic aberration curve of the optical imaging lens of Example 2 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. Figures 4A to 4D It can be seen that the optical imaging lens provided in Example 2 can achieve good imaging quality.

[0079] Example 3

[0080] The following reference Figures 5 to 6D An optical imaging lens according to Example 3 of the present application is described. Figure 5 A schematic structural diagram of an optical imaging lens according to Example 3 of the present application is shown.

[0081] like Figure 5 As shown, the optical imaging lens includes, 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 and a filter E7.

[0082] 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 filter E7 has an object-side surface S13 and an image-side surface S14. The optical imaging lens has an imaging surface S15, and light from an object sequentially passes through each of surfaces S1 to S14 and is ultimately imaged on the imaging surface S15.

[0083] In this embodiment, the total effective focal length f of the optical imaging lens is 6.00 mm, the on-axis distance TTL from the object-side surface S1 of the first lens element E1 to the imaging surface S15 is 5.86 mm, and the half-diagonal length ImgH of the effective pixel area on the imaging surface S15 is 3.07 mm.

[0084] Table 5 shows the basic parameters of the optical imaging lens of Example 3, where the units of curvature radius, thickness / distance, and focal length are all in millimeters (mm). Table 6 shows the high-order coefficients of each aspherical mirror surface 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.

[0085]

[0086] Table 5

[0087] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -2.6936E-03 -2.3954E-03 4.0224E-03 -9.4496E-03 1.1348E-02 -8.3336E-03 3.5644E-03 -8.1985E-04 7.5408E-05 S2 7.7482E-03 1.2074E-03 -2.9042E-03 2.0840E-03 1.5562E-03 -4.1984E-03 3.1102E-03 -1.0507E-03 1.3749E-04 S3 -1.1174E-02 2.3626E-02 -1.1877E-02 9.7090E-03 -3.9011E-03 -3.4548E-03 4.8783E-03 -2.2291E-03 3.7507E-04 S4 -1.2240E-02 3.0848E-02 3.8127E-03 -3.1131E-02 7.7315E-02 -1.0286E-01 7.8985E-02 -3.2880E-02 5.7277E-03 S5 1.0511E-02 5.3519E-03 2.5891E-02 -5.0116E-02 8.0945E-02 -8.2017E-02 5.1853E-02 -1.8630E-02 2.9499E-03 S6 -3.4596E-02 -8.0051E-03 5.0405E-02 -1.2309E-01 1.9941E-01 -2.0558E-01 1.3031E-01 -4.6219E-02 6.9149E-03 S7 -1.1150E-01 -7.1728E-02 1.2263E-01 -2.6602E-01 3.7912E-01 -3.8399E-01 2.6514E-01 -1.1448E-01 2.3079E-02 S8 -9.1230E-02 -4.9215E-02 9.1533E-02 -1.4529E-01 1.5667E-01 -1.0550E-01 4.4351E-02 -1.1269E-02 1.5488E-03 S9 -2.3775E-01 1.5285E-01 -4.3790E-01 1.0141E+00 -1.5756E+00 1.6197E+00 -1.1032E+00 4.9739E-01 -1.4662E-01 S10 -2.9771E-01 3.4497E-01 -5.6776E-01 8.2513E-01 -8.7821E-01 6.5879E-01 -3.4744E-01 1.2898E-01 -3.3488E-02 S11 -1.0835E-01 1.3928E-01 -1.9957E-01 2.1790E-01 -1.6146E-01 7.7282E-02 -2.3281E-02 4.2117E-03 -4.1169E-04 S12 -9.8974E-02 7.5349E-02 -7.1286E-02 5.3318E-02 -2.6733E-02 8.4467E-03 -1.6144E-03 1.7020E-04 -7.6080E-06

[0088] Table 6

[0089] Figure 6A The axial chromatic aberration curve of the optical imaging lens of Example 3 is shown, which indicates the deviation of the convergent focus of light of different wavelengths passing through the lens. Figure 6B The astigmatism curve of the optical imaging lens 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 of Example 3 is shown, which represents the distortion values corresponding to different field angles. Figure 6D The chromatic aberration curve of the optical imaging lens of Example 3 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. 6A to 6D It can be seen that the optical imaging lens provided in Example 3 can achieve good imaging quality.

[0090] Example 4

[0091] The following reference Figures 7 to 8D An optical imaging lens according to Example 4 of the present application is described. Figure 7 A schematic structural diagram of an optical imaging lens according to Example 4 of the present application is shown.

[0092] like Figure 7 As shown, the optical imaging lens includes, 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 and a filter E7.

[0093] 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 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 positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being convex. The filter E7 has an object-side surface S13 and an image-side surface S14. The optical imaging lens has an imaging surface S15, and light from an object sequentially passes through each of surfaces S1 to S14 and is ultimately imaged on the imaging surface S15.

[0094] In this embodiment, the total effective focal length f of the optical imaging lens is 6.13 mm, the on-axis distance TTL from the object-side surface S1 of the first lens element E1 to the imaging surface S15 is 5.94 mm, and the half-diagonal length ImgH of the effective pixel area on the imaging surface S15 is 3.07 mm.

[0095] Table 7 shows the basic parameters of the optical imaging lens of Example 4, where the units of curvature radius, thickness / distance, and focal length are all in millimeters (mm). Table 8 shows the high-order coefficients of each aspherical mirror surface 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.

[0096]

[0097] Table 7

[0098] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -3.0735E-03 8.3886E-04 -6.2023E-04 -1.0327E-02 2.0588E-02 -1.8170E-02 8.3710E-03 -1.9391E-03 1.7522E-04 S2 3.6958E-02 -5.2383E-02 3.1650E-02 4.5186E-02 -9.7604E-02 7.8565E-02 -3.2874E-02 7.0414E-03 -6.0868E-04 S3 9.4064E-03 -1.4991E-02 -9.9441E-02 4.0224E-01 -6.2289E-01 5.2336E-01 -2.5138E-01 6.4845E-02 -6.9718E-03 S4 -2.5637E-02 7.5971E-02 -3.1562E-01 9.0513E-01 -1.4242E+00 1.3217E+00 -7.2196E-01 2.1415E-01 -2.6555E-02 S5 -1.3310E-02 -1.8749E-02 2.1210E-01 -5.4697E-01 8.8032E-01 -8.8833E-01 5.4579E-01 -1.8657E-01 2.7226E-02 S6 -7.4375E-02 5.7982E-02 -1.0353E-01 2.4048E-01 -3.5628E-01 3.0253E-01 -1.4123E-01 2.9003E-02 -7.4258E-04 S7 -2.0302E-01 -5.3386E-02 1.9761E-01 -4.7252E-01 6.8518E-01 -5.2400E-01 1.1995E-01 6.3379E-02 -2.7946E-02 S8 -1.7217E-01 4.0416E-02 -3.5664E-02 9.5485E-02 -9.0377E-02 4.5832E-02 -1.9117E-02 9.7436E-03 -2.4083E-03 S9 -3.9048E-01 3.4705E-01 1.6512E-01 -2.1423E+00 5.0690E+00 -6.4324E+00 4.7302E+00 -1.6231E+00 -3.5606E-01 S10 -4.3315E-01 6.4160E-01 -7.6647E-01 4.8648E-01 6.8963E-02 -4.5510E-01 4.6918E-01 -2.8042E-01 1.1128E-01 S11 -1.2059E-01 1.3991E-01 1.5745E-02 -2.2665E-01 3.0161E-01 -2.2698E-01 1.1425E-01 -4.0524E-02 1.0285E-02 S12 -1.3622E-01 1.5364E-01 -1.8494E-01 2.1387E-01 -1.8693E-01 1.1493E-01 -4.9824E-02 1.5388E-02 -3.3947E-03

[0099] Table 8

[0100] Figure 8A The axial chromatic aberration curve of the optical imaging lens of Example 4 is shown, which indicates the deviation of the convergent focus of light of different wavelengths passing through the lens. Figure 8BThe astigmatism curve of the optical imaging lens 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 of Example 4 is shown, which represents the distortion values corresponding to different field angles. Figure 8D The chromatic aberration curve of the optical imaging lens of Example 4 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. Figures 8A to 8D It can be seen that the optical imaging lens provided in Example 4 can achieve good imaging quality.

[0101] Example 5

[0102] The following reference Figures 9 to 10D An optical imaging lens according to Example 5 of the present application is described. Figure 9 A schematic structural diagram of an optical imaging lens according to Example 5 of the present application is shown.

[0103] like Figure 9 As shown, the optical imaging lens includes, 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 and a filter E7.

[0104] The first lens E1 has positive focal power, with its object-side surface S1 being convex and its image-side surface S2 being convex. 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 negative 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 positive focal power, with its object-side surface S11 being convex and its image-side surface S12 being convex. The filter E7 has an object-side surface S13 and an image-side surface S14. The optical imaging lens has an imaging surface S15, and light from an object sequentially passes through each of surfaces S1 to S14 and is ultimately imaged on the imaging surface S15.

[0105] In this embodiment, the total effective focal length f of the optical imaging lens is 6.12 mm, the on-axis distance TTL from the object-side surface S1 of the first lens element E1 to the imaging surface S15 is 5.98 mm, and the half-diagonal length ImgH of the effective pixel area on the imaging surface S15 is 3.07 mm.

[0106] Table 9 shows the basic parameters of the optical imaging lens of Example 5, where the units of curvature radius, thickness / distance, and focal length are all in millimeters (mm). Table 10 shows the high-order coefficients of each aspherical mirror surface 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.

[0107]

[0108]

[0109] Table 9

[0110] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -2.9087E-03 -2.0688E-03 8.8584E-03 -2.4016E-02 3.2212E-02 -2.4094E-02 1.0180E-02 -2.2460E-03 1.9905E-04 S2 2.4747E-02 -2.8414E-03 -7.7278E-02 1.9464E-01 -2.2635E-01 1.4838E-01 -5.5807E-02 1.1177E-02 -9.2169E-04 S3 -1.2248E-03 2.2551E-02 -1.6669E-01 4.2676E-01 -5.4662E-01 4.0143E-01 -1.7142E-01 3.9485E-02 -3.7897E-03 S4 -1.9833E-02 5.1692E-02 -1.8888E-01 4.7644E-01 -6.5938E-01 5.3821E-01 -2.5857E-01 6.7461E-02 -7.3578E-03 S5 -1.0809E-02 -1.3721E-02 1.3989E-01 -3.2508E-01 4.7150E-01 -4.2876E-01 2.3740E-01 -7.3132E-02 9.6169E-03 S6 -7.1208E-02 5.4319E-02 -9.4906E-02 2.1570E-01 -3.1269E-01 2.5980E-01 -1.1867E-01 2.3846E-02 -5.9740E-04 S7 -1.8671E-01 -4.7085E-02 1.6715E-01 -3.8328E-01 5.3299E-01 -3.9090E-01 8.5814E-02 4.3483E-02 -1.8387E-02 S8 -1.6111E-01 3.6584E-02 -3.1228E-02 8.0878E-02 -7.4051E-02 3.6326E-02 -1.4657E-02 7.2265E-03 -1.7279E-03 S9 -3.8636E-01 3.4157E-01 1.6165E-01 -2.0863E+00 4.9103E+00 -6.1981E+00 4.5338E+00 -1.5474E+00 -3.3768E-01 S10 -4.1993E-01 6.1245E-01 -7.2040E-01 4.5021E-01 6.2839E-02 -4.0832E-01 4.1447E-01 -2.4391E-01 9.5301E-02 S11 -1.0646E-01 1.1606E-01 1.2272E-02 -1.6599E-01 2.0754E-01 -1.4675E-01 6.9409E-02 -2.3131E-02 5.5162E-03 S12 -1.1571E-01 1.2029E-01 -1.3345E-01 1.4224E-01 -1.1458E-01 6.4930E-02 -2.5943E-02 7.3845E-03 -1.5015E-03

[0111] Table 10

[0112] Figure 10A The axial chromatic aberration curve of the optical imaging lens of Example 5 is shown, which indicates the deviation of the convergent focus of light of different wavelengths passing through the lens. Figure 10B The astigmatism curve of the optical imaging lens 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 of Example 5 is shown, which represents the distortion values corresponding to different field angles. Figure 10D The chromatic aberration curve of the optical imaging lens of Example 5 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. 10A to 10D It can be seen that the optical imaging lens provided in Example 5 can achieve good imaging quality.

[0113] Example 6

[0114] The following reference Figures 11 to 12D An optical imaging lens according to Example 6 of the present application is described. Figure 11 A schematic structural diagram of an optical imaging lens according to Example 6 of the present application is shown.

[0115] like Figure 11 As shown, the optical imaging lens includes, 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 and a filter E7.

[0116] The first lens E1 has positive focal power, with its object-side surface S1 being convex and its image-side surface S2 being convex. 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 concave and its image-side surface S12 being convex. The filter E7 has an object-side surface S13 and an image-side surface S14. The optical imaging lens has an imaging surface S15, and light from an object sequentially passes through each of surfaces S1 to S14 and is ultimately imaged on the imaging surface S15.

[0117] In this embodiment, the total effective focal length f of the optical imaging lens is 6.36 mm, the on-axis distance TTL from the object-side surface S1 of the first lens element E1 to the imaging surface S15 is 5.88 mm, and the half-diagonal length ImgH of the effective pixel area on the imaging surface S15 is 3.07 mm.

[0118] Table 11 shows the basic parameters of the optical imaging lens of Example 6, where the units of curvature radius, thickness / distance, and focal length are all in millimeters (mm). Table 12 shows the high-order coefficients of each aspherical mirror surface 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.

[0119]

[0120] Table 11

[0121] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -2.1366E-03 -7.2298E-03 1.6089E-02 -2.6799E-02 2.5811E-02 -1.5433E-02 5.5216E-03 -1.0938E-03 9.2642E-05 S2 3.5204E-02 -4.0216E-02 4.2878E-02 -3.7886E-02 2.6152E-02 -1.2889E-02 4.0735E-03 -7.2060E-04 5.3609E-05 S3 9.4762E-03 -2.5574E-02 6.1706E-02 -7.3564E-02 6.4522E-02 -3.8319E-02 1.4116E-02 -2.9314E-03 2.6058E-04 S4 -2.2528E-02 3.9169E-02 -6.6428E-02 1.9075E-01 -3.0145E-01 2.8523E-01 -1.5712E-01 4.5640E-02 -5.4197E-03 S5 -1.3820E-02 1.1974E-02 7.0400E-02 -1.7371E-01 2.7810E-01 -2.7245E-01 1.6567E-01 -5.7782E-02 9.0397E-03 S6 -7.4634E-02 1.0859E-01 -3.7977E-01 1.0333E+00 -1.8335E+00 2.0644E+00 -1.4215E+00 5.4671E-01 -9.0103E-02 S7 -2.2377E-01 -2.9950E-02 3.6382E-01 -1.3117E+00 2.4369E+00 -2.6888E+00 1.7225E+00 -5.8324E-01 8.0624E-02 S8 -1.9340E-01 1.2681E-01 -1.7067E-01 2.0172E-01 -1.6343E-01 9.1782E-02 -3.7343E-02 1.2746E-02 -2.3169E-03 S9 -2.7868E-01 -1.9666E-02 8.4374E-01 -3.2960E+00 6.8882E+00 -8.6864E+00 6.5494E+00 -2.3275E+00 -5.3463E-01 S10 -3.6784E-01 4.6713E-01 -5.4904E-01 3.1669E-01 1.6071E-01 -4.9752E-01 4.9097E-01 -2.9189E-01 1.1609E-01 S11 -8.8826E-02 1.2156E-01 4.9871E-02 -3.2788E-01 4.5222E-01 -3.6121E-01 1.9386E-01 -7.3401E-02 1.9897E-02 S12 -1.7522E-01 2.0105E-01 -2.4052E-01 2.7951E-01 -2.5333E-01 1.6365E-01 -7.4740E-02 2.4312E-02 -5.6457E-03

[0122] Table 12

[0123] Figure 12A The axial chromatic aberration curve of the optical imaging lens of Example 6 is shown, which indicates the deviation of the convergent focus of light of different wavelengths passing through the lens. Figure 12B The astigmatism curve of the optical imaging lens 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 of Example 6 is shown, which represents the distortion values corresponding to different field angles. Figure 12D The chromatic aberration curve of the optical imaging lens of Example 6 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. 12A to 12D It can be seen that the optical imaging lens provided in Example 6 can achieve good imaging quality.

[0124] Example 7

[0125] The following reference Figures 13 to 14D An optical imaging lens according to Example 7 of the present application is described. Figure 13 A schematic structural diagram of an optical imaging lens according to Example 7 of the present application is shown.

[0126] like Figure 13 As shown, the optical imaging lens includes, 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 and a filter E7.

[0127] The first lens E1 has positive focal power, with its object-side surface S1 being convex and its image-side surface S2 being convex. 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 filter E7 has an object-side surface S13 and an image-side surface S14. The optical imaging lens has an imaging surface S15, and light from an object sequentially passes through each of surfaces S1 to S14 and is ultimately imaged on the imaging surface S15.

[0128] In this embodiment, the total effective focal length f of the optical imaging lens is 5.96 mm, the on-axis distance TTL from the object-side surface S1 of the first lens element E1 to the imaging surface S15 is 5.82 mm, and the half-diagonal length of the effective pixel area on the imaging surface S15, ImgH, is 3.07 mm.

[0129] Table 13 shows the basic parameters of the optical imaging lens of Example 7, where the units of curvature radius, thickness / distance, and focal length are all in millimeters (mm). Table 14 shows the high-order coefficients of each aspherical mirror surface 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.

[0130]

[0131] Table 13

[0132]

[0133]

[0134] Table 14

[0135] Figure 14AThe axial chromatic aberration curve of the optical imaging lens of Example 7 is shown, which indicates the deviation of the convergent focus of light of different wavelengths passing through the lens. Figure 14B The astigmatism curve of the optical imaging lens 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 of Example 7 is shown, which represents the distortion values corresponding to different field angles. Figure 14D The chromatic aberration curve of the optical imaging lens of Example 7 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. 14A to 14D It can be seen that the optical imaging lens provided in Example 7 can achieve good imaging quality.

[0136] In summary, Examples 1 to 7 respectively satisfy the relationships shown in Table 15.

[0137] Conditional formula\Example 1 2 3 4 5 6 7 TTL / f 0.91 0.94 0.98 0.97 0.98 0.92 0.98 (R5+R6) / (10×CT3) 2.58 2.43 1.70 1.68 2.20 2.34 2.15 f1 / (f5-f2) 1.48 1.33 2.05 1.65 1.28 2.29 1.70 R6 / R5 1.13 1.40 1.26 0.63 0.42 1.13 1.10 R8 / R7 0.68 0.62 0.79 0.97 1.12 0.71 0.77 f5 / (R9+R10) -0.69 -0.82 -0.61 -0.97 -0.80 -0.93 -0.28 (T23+T34) / (T45+T56) 0.97 1.02 1.32 0.89 0.82 1.02 1.31 DT62 / (DT31+DT32) 1.15 1.04 0.90 1.14 1.16 1.06 0.99 f12 / f56 -0.82 -0.92 -0.74 -0.64 -0.66 -0.84 -0.66 SAG51 / SAG41 2.46 2.27 2.35 2.33 2.86 2.68 2.42 ET2 / CT2 1.49 1.53 0.99 1.55 1.62 1.69 1.56 ET5 / CT6 0.53 0.73 1.04 0.69 0.81 0.71 1.11

[0138] Table 15

[0139] The present application also provides an imaging device, which is provided with an electronic photosensitive element for imaging. The electronic photosensitive element can be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS). The imaging device can 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 described above.

[0140] 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 protection provided in this application is not limited to the technical solutions formed by a 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 concept of this application. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. An optical imaging lens, characterized in that: Along the optical axis from the object side to the image side, they include: a first lens having positive optical power and a convex object-side surface; a second lens having negative optical power, the object-side surface of which is convex and the image-side surface of which is concave; a third lens having optical power, the object-side surface of which is convex and the image-side surface of which is concave; a fourth lens element having optical power, the object-side surface of which is convex and the image-side surface of which is concave; a fifth lens element having negative optical power, the object-side surface of which is convex and the image-side surface of which is concave; and a sixth lens having positive optical power; The number of lenses having optical power in the optical imaging lens is six; The distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis and the total effective focal length f of the optical imaging lens satisfy the following conditions: 0.9<TTL / f<1.0; A curvature radius R5 of the object-side surface of the third lens, a curvature radius R6 of the image-side surface of the third lens, and a center thickness CT3 of the third lens on the optical axis satisfy: 1.68≤(R5+R6) / (10×CT3)<2.

6.

2. The optical imaging lens according to claim 1, wherein: The effective focal length f1 of the first lens, the effective focal length f5 of the fifth lens, and the effective focal length f2 of the second lens satisfy the following: 1.28≤f1 / (f5-f2)<2.

3.

3. The optical imaging lens according to claim 1, wherein: A curvature radius R6 of the image-side surface of the third lens and a curvature radius R5 of the object-side surface of the third lens satisfy: 0.4<R6 / R5≤1.

4.

4. The optical imaging lens according to claim 1, wherein: A curvature radius R8 of the image-side surface of the fourth lens and a curvature radius R7 of the object-side surface of the fourth lens satisfy: 0.6<R8 / R7≤1.

12.

5. The optical imaging lens according to claim 1, wherein: An effective focal length f5 of the fifth lens, a curvature radius R9 of the object-side surface of the fifth lens, and a curvature radius R10 of the image-side surface of the fifth lens satisfy: -1.0<f5 / (R9+R10)≤-0.

28.

6. The optical imaging lens according to claim 1, wherein: A distance T23 between the second lens and the third lens on the optical axis, a distance T34 between the third lens and the fourth lens on the optical axis, a distance T45 between the fourth lens and the fifth lens on the optical axis, and a distance T56 between the fifth lens and the sixth lens on the optical axis satisfy the following conditions: 0.8<(T23+T34) / (T45+T56)≤1.

32.

7. The optical imaging lens according to claim 1, wherein: The effective semi-aperture DT62 of the image-side surface of the sixth lens, the effective semi-aperture DT31 of the object-side surface of the third lens, and the effective semi-aperture DT32 of the image-side surface of the third lens satisfy: 0.9≤DT62 / (DT31+DT32)<1.

2.

8. The optical imaging lens according to claim 1, wherein: A combined focal length f12 of the first lens and the second lens and a combined focal length f56 of the fifth lens and the sixth lens satisfy the following: -0.92≤f12 / f56<-0.

6.

9. The optical imaging lens according to claim 1, wherein: The on-axis distance SAG51 between the intersection of the object side surface of the fifth lens and the optical axis to the effective radius vertex of the object side surface of the fifth lens and the on-axis distance SAG41 between the intersection of the object side surface of the fourth lens and the optical axis to the effective radius vertex of the object side surface of the fourth lens satisfy: 2.27≤SAG51 / SAG41<2.

9.

10. The optical imaging lens according to any one of claims 1 to 9, wherein: An edge thickness ET2 of the second lens and a center thickness CT2 of the second lens on the optical axis satisfy the following: 0.99≤ET2 / CT2<1.

7.

11. The optical imaging lens according to any one of claims 1 to 9, wherein: An edge thickness ET5 of the fifth lens and a center thickness CT6 of the sixth lens on the optical axis satisfy the following: 0.5<ET5 / CT6≤1.11.

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