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 positive optical power; a third lens having negative optical power; a fourth lens having a concave object-side surface and a convex image-side surface; a fifth lens having negative optical power and a concave object-side surface; and a sixth lens having positive optical power. The total effective focal length f of the optical imaging lens satisfies 6.7 mm < f < 7.7 mm.

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] Mobile phones and other portable devices are often equipped with camera modules, giving them camera functionality. In recent years, with the rapid rise of mobile social networking platforms, people are increasingly sharing their daily lives through these platforms. For example, they share high-quality photos of people, scenery, and delicious food in the hope of catching others' attention. Consequently, the demand for camera lenses is becoming increasingly diverse.

[0003] To cater to the needs of consumers, such as those for different shooting effects like close-up shots, long shots, and video, the mobile phone industry typically designs camera modules equipped with a variety of optical imaging lenses with different functions. Camera modules are typically equipped with a charge-coupled device (CCD) image sensor or a complementary metal oxide semiconductor (CMOS) image sensor, along with an optical imaging lens. The optical imaging lens collects light from the object side, and the imaging light travels along the optical path of the optical imaging lens and strikes the image sensor, which then converts the light signal into an electrical signal to form image data.

[0004] In order to meet the requirements of long-range imaging, an optical imaging lens is needed that can ensure the structural size of the optical imaging lens while taking into account the long focal length. 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] In one aspect, the present application provides an optical imaging lens comprising, in order from the object side to the image side along the optical axis: a first lens element having positive optical power; a second lens element having positive optical power; a third lens element having negative optical power; a fourth lens element whose object-side surface may be concave and whose image-side surface may be convex; a fifth lens element having negative optical power, whose object-side surface may be concave; and a sixth lens element having positive optical power. The total effective focal length f of the optical imaging lens may satisfy 6.7 mm < f < 7.7 mm.

[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 distance TTL on the optical axis from the object-side surface of the first lens to the imaging surface of the optical imaging lens and the total effective focal length f of the optical imaging lens may satisfy TTL / f<1.0.

[0009] In one embodiment, a curvature radius R7 of the object-side surface of the fourth lens and a curvature radius R8 of the image-side surface of the fourth lens may satisfy −1.3<( R7 + R8 ) / f<−0.9.

[0010] In one embodiment, 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 may satisfy −2.6<R9 / R10<0.

[0011] In one embodiment, the effective focal length f3 of the third lens, the effective focal length f4 of the fourth lens, and the effective focal length f5 of the fifth lens may satisfy 0.2<(f3+f5) / f4<0.7.

[0012] 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 f6 of the sixth lens may satisfy 0.7<(f1+f6) / f2<1.4.

[0013] In one embodiment, the maximum field of view (FOV) of the optical imaging lens may satisfy 48°<FOV<54°.

[0014] In one embodiment, the center thickness CT5 of the fifth lens on the optical axis, the spacing T56 between the fifth lens and the sixth lens on the optical axis, and the center thickness CT6 of the sixth lens on the optical axis may satisfy 0.5<(CT5+T56) / CT6<0.7.

[0015] In one embodiment, a center thickness CT1 of the first lens on the optical axis, a center thickness CT2 of the second lens on the optical axis, and a separation distance T45 between the fourth lens and the fifth lens on the optical axis may satisfy 1.2<(CT1+CT2) / T45<1.5.

[0016] In one embodiment, the optical imaging lens includes an aperture arranged on the optical axis; the on-axis distance SL from the aperture to the imaging plane and the distance TTL from the object side surface of the first lens to the imaging plane on the optical axis may satisfy 0.85<SL / TTL<0.95.

[0017] In one embodiment, the combined focal length f1234 of the first lens, the second lens, the third lens, and the fourth lens and the combined focal length f56 of the fifth lens and the sixth lens may satisfy -0.6<f1234 / f56<-0.3.

[0018] In one embodiment, an effective semi-aperture DT62 of the image-side surface of the sixth lens and an effective semi-aperture DT11 of the object-side surface of the first lens may satisfy 1.45<DT62 / DT11<1.65.

[0019] In one embodiment, an effective semi-aperture DT12 of the image-side surface of the first lens and an effective semi-aperture DT42 of the image-side surface of the fourth lens may satisfy 1.2<DT12 / DT42<1.4.

[0020] On the other hand, the present application provides an optical imaging lens comprising, 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 positive optical power; a third lens having negative optical power; a fourth lens having a concave object-side surface and a convex image-side surface; a fifth lens having negative optical power and a concave object-side surface; and a sixth lens having positive optical power. The curvature radius R7 of the object-side surface of the fourth lens and the curvature radius R8 of the image-side surface of the fourth lens satisfy the relationship -1.3<(R7+R8) / f<-0.9.

[0021] This application utilizes six lenses. By rationally allocating the focal power, surface shape, center thickness, and on-axis spacing between each lens, the optical imaging lens achieves at least one of the following beneficial effects: miniaturization, long focal length, and rich imaging content. While meeting the required installation dimensions, the optical imaging lens significantly increases the focal length, enabling fully compressed images captured by the camera, resulting in richer captured sceneries. This optical imaging lens can better meet the photography enthusiasts' needs for long-range photography. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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:

[0023] Figure 1 1 shows a schematic structural diagram of an optical imaging lens according to Example 1 of the present application; Figures 2A to 2D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 1 are respectively shown;

[0024] 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;

[0025] Figure 5 1 shows a schematic structural diagram of an optical imaging lens according to Example 3 of the present application; 6A to 6Daxial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 3 are respectively shown;

[0026] 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;

[0027] 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;

[0028] Figure 11 1 shows a schematic structural diagram of an optical imaging lens according to Example 6 of the present application; 12A to 12D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 6 are respectively shown. DETAILED DESCRIPTION

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] The features, principles and other aspects of the present application are described in detail below.

[0037] An optical imaging lens according to an exemplary embodiment of the present application may include, for example, six lenses having optical power: 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. Among the first through sixth lenses, any two adjacent lenses may have an air gap between them.

[0038] In an exemplary embodiment, the first lens may have positive power; the second lens may have positive power; the third lens may have negative power; the fourth lens may have positive or negative power, with its object-side surface being concave and its image-side surface being convex; the fifth lens may have negative power, with its object-side surface being concave; and the sixth lens may have positive power. By properly controlling the distribution of positive and negative power among the lens components and the lens surface curvature, the low-order aberrations of the lens can be effectively balanced and controlled.

[0039] The positive first and second lens elements converge light, while the negative third lens element further diverges it. This ensures smooth light transmission while increasing the focal length of the optical imaging lens and improving aberrations. The concave surface of the fourth lens element's object side ensures that light continues to diverge as it passes through the lens's object side. This further corrects the tendency for light to diverge as it passes through the lens's convex image side. This ensures smooth light transmission while increasing the optical distance and focal length of the system within the limited dimensions of the lens. The negative fifth lens element, with its concave object side, helps increase the image area of the lens. Furthermore, the third and fourth lens elements, combined with the first and second lenses, form a double-Gaussian structure, which helps eliminate aberrations in the lens. The positive sixth lens element further converges light and balances aberrations. At the same time, the sixth lens is the lens closest to the image side, and its shape can reduce the angle between the light and each lens in the optical imaging lens, which helps to improve the ghosting phenomenon of the optical imaging lens.

[0040] 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.

[0041] For example, the optical imaging lens of the present application can satisfy the conditional equation 0.85 < SL / TTL < 0.95, where SL is the on-axis distance from the aperture to the imaging plane, and TTL is the distance on the optical axis from the object-side surface of the first lens element to the imaging plane. By controlling the relationship between the on-axis distance between the aperture and the imaging plane and the total optical length, it helps to reduce vignetting within the optical imaging lens's field of view, and helps to optimize astigmatism and field curvature within the optical imaging lens's field of view, thereby achieving light convergence within the field of view. More specifically, SL and TTL can satisfy 0.86 < SL / TTL < 0.90.

[0042] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional equation TTL / f < 1.0, where TTL is the distance on the optical axis from the object-side surface of the first lens element to the imaging plane of the optical imaging lens, and f is the total effective focal length of the optical imaging lens. By controlling the ratio of the total optical length to the total effective focal length, the telephoto effect of the lens can be enhanced within the effective dimensions of the lens, facilitating the capture of distant objects and achieving a better compression effect in captured images. More specifically, TTL and f can satisfy 0.9 < TTL / f < 0.99.

[0043] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the condition 6.7mm < f < 7.7mm. By increasing the total effective focal length of the lens, it is helpful to capture distant scenes with a good compression effect. More specifically, f can satisfy 6.8mm < f < 7.6mm.

[0044] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional equation: -1.3 < (R7 + R8) / f < -0.9, where R7 is the radius of curvature of the object-side surface of the fourth lens element, and R8 is the radius of curvature of the image-side surface of the fourth lens element. By matching the curvature radii of the two mirror surfaces of the fourth lens element with the total effective focal length, the fourth lens element can be used to achieve a more balanced and appropriate distribution of lens power, thereby achieving convergence of light aberrations.

[0045] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula, where 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. Controlling the ratio of the radii of curvature of the two mirror surfaces of the fifth lens element helps constrain the shape of the fifth lens element and helps reduce chromatic aberration. More specifically, R9 and R10 satisfy -2.58 < R9 / R10 < 0.1.

[0046] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional equation 0.2 < (f3 + f5) / f4 < 0.7, where f3 is the effective focal length of the third lens element, f4 is the effective focal length of the fourth lens element, and f5 is the effective focal length of the fifth lens element. By matching the effective focal lengths of these three lenses, the lens's optical power is properly distributed, the lens structure is balanced, and lens aberrations are effectively corrected while ensuring smooth light transmission. More specifically, f3, f4, and f5 may satisfy 0.25 < (f3 + f5) / f4 < 0.65.

[0047] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the condition 0.7 < (f1 + f6) / f2 < 1.4, where f1 is the effective focal length of the first lens element, f2 is the effective focal length of the second lens element, and f6 is the effective focal length of the sixth lens element. By matching the effective focal lengths of these three lenses, the optical power of the three lenses can be balanced, effectively reducing the sensitivity of the first and second lenses and improving the peak yield of the lens.

[0048] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the condition 48° < FOV < 54°, where FOV is the maximum field of view (FOV) of the optical imaging lens. While ensuring that the lens can capture distant objects, increasing the FOV effectively increases the lens's capture space. More specifically, the FOV can satisfy 48.7° < FOV < 53.1°.

[0049] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional equation 0.5 < (CT5 + T56) / CT6 < 0.7, where CT5 is the center thickness of the fifth lens element on the optical axis, T56 is the distance between the fifth and sixth lenses on the optical axis, and CT6 is the center thickness of the sixth lens element on the optical axis. By balancing the center thicknesses of the fifth and sixth lenses and the gap between them, chromatic aberration and spherical aberration of the convergence lens can be balanced, and ghost images can be reduced.

[0050] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional equation 1.2 < (CT1 + CT2) / T45 < 1.5, where CT1 is the center thickness of the first lens on the optical axis, CT2 is the center thickness of the second lens on the optical axis, and T45 is the distance between the fourth and fifth lenses on the optical axis. By matching the center thickness of the first lens, the center thickness of the second lens, and the air gap between the fourth and fifth lenses, it is possible to adjust the tolerance trend of the lens, reduce the thickness gap sensitivity of the lens, facilitate lens manufacturing, and improve the yield of the optical imaging lens. More specifically, CT1, CT2, and T45 may satisfy 1.20 < (CT1 + CT2) / T45 < 1.41.

[0051] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional equation: -0.6 < f1234 / f56 < -0.3, where f1234 is the combined focal length of the first, second, third, and fourth lenses, and f56 is the combined focal length of the fifth and sixth lenses. By controlling the relationship between the combined focal power of the first four lenses and the combined focal power of the last two lenses, the lens's optical power is comprehensively balanced, achieving a reasonable distribution of lens power, facilitating smooth light transmission, and ultimately correcting lens aberrations.

[0052] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional equation 1.45 < DT62 / DT11 < 1.65, where DT62 is the effective semi-aperture of the image-side surface of the sixth lens element, and DT11 is the effective semi-aperture of the object-side surface of the first lens element. Controlling this conditional equation helps control the effective diameters of the first and sixth lenses, thereby ensuring a large aperture for the lens. It also helps constrain the maximum effective size of the imaging surface of the optical imaging lens, ensuring its miniaturization.

[0053] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional equation 1.2 < DT12 / DT42 < 1.4, where DT12 is the effective semi-aperture of the image-side surface of the first lens element, and DT42 is the effective semi-aperture of the image-side surface of the fourth lens element. By constraining the ratio of the effective semi-aperture of the image-side surface of the first lens element to the effective semi-aperture of the image-side surface of the fourth lens element, the lens can be kept smaller and partially light-blocked, thereby improving the yield of the lens's external field of view.

[0054] 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 on-axis spacing between lenses, the size of the imaging lens can be effectively reduced, sensitivity reduced, and processability improved, making the optical imaging lens more amenable to production and suitable for portable electronic products. Furthermore, the optical imaging lens of the present application also exhibits excellent optical properties, such as a long focal length, excellent image compression, and high image quality.

[0055] 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.

[0056] 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 six lenses are described in the embodiments, the optical imaging lens is not limited to six lenses. If desired, the optical imaging lens may also include other numbers of lenses.

[0057] Specific embodiments of the optical imaging lens applicable to the above-mentioned embodiments will be further described below with reference to the accompanying drawings.

[0058] Example 1

[0059] 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.

[0060] 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.

[0061] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive 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 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 sixth lens E6 has positive optical 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 surface S1 to S14 and is ultimately imaged on the imaging surface S15.

[0062] 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).

[0063]

[0064] Table 1

[0065] In Example 1, the total effective focal length f of the optical imaging lens is 7.50 mm, the on-axis distance TTL from the object-side surface S1 of the first lens element E1 to the imaging surface S15 is 6.99 mm, and the half-diagonal length ImgH of the effective pixel area on the imaging surface S15 is 3.47 mm.

[0066] 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:

[0067]

[0068] 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 10 、A 12 、A 14 、A 16 、A 18 and A 20 .

[0069]

[0070]

[0071] Table 2

[0072] 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.

[0073] Example 2

[0074] The following reference Figures 3 to 4DThe 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.

[0075] 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.

[0076] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive 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 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 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.

[0077] In Example 2, the total effective focal length f of the optical imaging lens is 7.56 mm, the on-axis distance TTL from the object-side surface S1 of the first lens element E1 to the imaging surface S15 is 6.95 mm, and the half-diagonal length ImgH of the effective pixel area on the imaging surface S15 is 3.47 mm.

[0078] 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.

[0079]

[0080]

[0081] Table 3

[0082] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -3.7692E-03 -2.2533E-03 8.5682E-04 1.2538E-03 -2.0161E-03 1.0363E-03 -2.5881E-04 2.4754E-05 -3.0713E-08 S2 -1.3072E-02 4.0562E-02 1.1129E-02 -3.5575E-02 1.9530E-02 -3.6758E-03 -5.6737E-04 3.3414E-04 -3.7994E-05 S3 -1.0053E-02 5.1788E-02 2.7156E-02 -8.7770E-02 8.1661E-02 -4.4909E-02 1.5604E-02 -3.1592E-03 2.7944E-04 S4 -3.3735E-02 9.3599E-02 -1.2280E-01 9.6472E-02 -5.1934E-02 2.1866E-02 -7.3258E-03 1.5627E-03 -1.4245E-04 S5 -5.2981E-02 1.0069E-01 -1.5195E-01 1.3091E-01 -4.7440E-02 -2.6992E-03 8.2656E-03 -2.8729E-03 4.2204E-04 S6 1.5739E-02 6.4241E-02 -2.5994E-01 6.7156E-01 -1.1895E+00 1.4397E+00 -1.0898E+00 4.6241E-01 -8.3899E-02 S7 -1.3068E-01 3.4845E-01 -7.9281E-01 1.2521E+00 -1.4770E+00 1.2819E+00 -7.9775E-01 3.2277E-01 -6.4639E-02 S8 3.3781E-02 -1.7090E-02 6.4742E-02 -1.3645E-01 1.2899E-01 -2.9893E-02 -3.8140E-02 2.9188E-02 -6.1372E-03 S9 7.2596E-02 -1.5049E-01 1.5328E-01 -1.1027E-01 5.4018E-02 -1.7316E-02 3.4854E-03 -4.0086E-04 2.0096E-05 S10 1.0558E-01 -1.8414E-01 1.5156E-01 -8.3139E-02 3.1048E-02 -7.6494E-03 1.1747E-03 -1.0123E-04 3.7272E-06 S11 -3.0896E-03 -2.9898E-02 1.4870E-02 -7.3095E-04 -1.2568E-03 4.1901E-04 -6.1446E-05 4.4959E-06 -1.3370E-07 S12 -3.8364E-02 8.2393E-03 -4.2074E-03 2.2712E-03 -6.3980E-04 1.0241E-04 -9.9551E-06 5.5974E-07 -1.3714E-08

[0083] Table 4

[0084] Figure 4AThe 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.

[0085] Example 3

[0086] 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.

[0087] 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.

[0088] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive 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 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 sixth lens E6 has positive optical 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 surface S1 to S14 and is ultimately imaged on the imaging surface S15.

[0089] In Example 3, the total effective focal length f of the optical imaging lens is 7.39 mm, the on-axis distance TTL from the object-side surface S1 of the first lens element E1 to the imaging surface S15 is 6.96 mm, and the half-diagonal length ImgH of the effective pixel area on the imaging surface S15 is 3.47 mm.

[0090] 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.

[0091]

[0092] Table 5

[0093] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -4.0339E-03 -2.8199E-03 3.3718E-03 -2.8704E-03 1.1399E-03 -1.8684E-04 -2.6725E-05 8.7694E-06 -2.5671E-07 S2 -1.4852E-02 4.2867E-02 7.3421E-04 -3.7641E-02 4.1564E-02 -2.4365E-02 7.9964E-03 -1.3775E-03 9.7345E-05 S3 -1.0561E-02 5.6702E-02 3.3265E-03 -6.5476E-02 8.2052E-02 -5.4777E-02 2.1119E-02 -4.4439E-03 3.9461E-04 S4 -3.4216E-02 9.1428E-02 -1.3628E-01 1.3993E-01 -9.9807E-02 4.9544E-02 -1.6590E-02 3.2925E-03 -2.8316E-04 S5 -5.1753E-02 9.5300E-02 -2.0307E-01 3.2065E-01 -3.3141E-01 2.3051E-01 -1.0283E-01 2.6148E-02 -2.8106E-03 S6 2.0251E-02 4.4224E-02 -2.2840E-01 5.7495E-01 -8.7452E-01 8.8264E-01 -5.6778E-01 2.1162E-01 -3.4714E-02 S7 -1.9755E-01 6.8904E-01 -1.9786E+00 4.1447E+00 -6.3091E+00 6.6442E+00 -4.5452E+00 1.8068E+00 -3.1703E-01 S8 3.1024E-02 -1.4046E-02 5.7286E-02 -1.6000E-01 2.3434E-01 -1.9406E-01 9.3249E-02 -2.4550E-02 2.7479E-03 S9 9.5565E-02 -1.7763E-01 1.5555E-01 -9.6774E-02 4.1521E-02 -1.1753E-02 2.1353E-03 -2.3202E-04 1.1694E-05 S10 1.0548E-01 -1.5117E-01 1.1155E-01 -5.9636E-02 2.2670E-02 -5.8062E-03 9.3978E-04 -8.6370E-05 3.4278E-06 S11 -4.1020E-02 3.6639E-02 -3.3523E-02 1.9601E-02 -6.8601E-03 1.4655E-03 -1.8905E-04 1.3566E-05 -4.1543E-07 S12 -5.4440E-02 2.9272E-02 -1.6075E-02 6.3684E-03 -1.5283E-03 2.1359E-04 -1.6251E-05 5.2154E-07 4.2881E-10

[0094] Table 6

[0095] 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.

[0096] Example 4

[0097] 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.

[0098] 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.

[0099] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive 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 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 sixth lens E6 has positive optical 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 surface S1 to S14 and is ultimately imaged on the imaging surface S15.

[0100] In Example 4, the total effective focal length f of the optical imaging lens is 7.23 mm, the on-axis distance TTL from the object-side surface S1 of the first lens element E1 to the imaging surface S15 is 6.85 mm, and the half-diagonal length ImgH of the effective pixel area on the imaging surface S15 is 3.47 mm.

[0101] 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.

[0102]

[0103] Table 7

[0104]

[0105]

[0106] Table 8

[0107] 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 8B The 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.

[0108] Example 5

[0109] 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.

[0110] 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.

[0111] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive 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 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 sixth lens E6 has positive optical 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 surface S1 to S14 and is ultimately imaged on the imaging surface S15.

[0112] In Example 5, the total effective focal length f of the optical imaging lens is 7.15 mm, the on-axis distance TTL from the object-side surface S1 of the first lens element E1 to the imaging surface S15 is 6.70 mm, and the half-diagonal length ImgH of the effective pixel area on the imaging surface S15 is 3.47 mm.

[0113] 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.

[0114]

[0115]

[0116] Table 9

[0117] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -3.6244E-03 -4.8968E-03 7.8835E-03 -9.9554E-03 7.8759E-03 -3.9726E-03 1.2334E-03 -2.2337E-04 1.7831E-05 S2 3.5810E-03 6.4481E-03 2.1283E-02 -3.4596E-02 3.0369E-02 -1.6796E-02 5.3652E-03 -9.0648E-04 6.3573E-05 S3 1.6583E-02 1.0806E-02 3.7676E-02 -7.5170E-02 8.1349E-02 -5.5426E-02 2.2927E-02 -5.2907E-03 5.1982E-04 S4 -2.8195E-02 5.8254E-02 -5.2070E-02 2.0091E-02 4.2026E-03 -7.3131E-03 2.3065E-03 -1.6830E-04 -1.4650E-05 S5 -4.5915E-02 3.3076E-02 1.3303E-03 -5.3318E-02 9.8639E-02 -8.6772E-02 4.3271E-02 -1.2118E-02 1.5471E-03 S6 1.8524E-02 -1.6432E-02 6.4577E-02 -1.8279E-01 4.5268E-01 -6.8410E-01 6.1986E-01 -3.0526E-01 6.3054E-02 S7 -1.6757E-01 5.2325E-01 -1.4897E+00 3.1989E+00 -4.9814E+00 5.3183E+00 -3.6667E+00 1.4654E+00 -2.5879E-01 S8 2.0694E-02 1.6545E-02 -2.4848E-02 4.0840E-02 -6.4497E-02 7.4869E-02 -5.2732E-02 1.9350E-02 -2.8444E-03 S9 5.9744E-02 -1.0075E-01 5.8075E-02 -8.4635E-03 -1.0590E-02 7.7142E-03 -2.3522E-03 3.5278E-04 -2.1232E-05 S10 7.7305E-02 -1.1281E-01 8.0478E-02 -3.8301E-02 1.1927E-02 -2.3097E-03 2.5475E-04 -1.3393E-05 1.9391E-07 S11 -2.9625E-02 9.9269E-04 1.1286E-02 -1.1377E-02 5.5379E-03 -1.4908E-03 2.2522E-04 -1.7881E-05 5.8146E-07 S12 -4.9553E-02 8.8934E-03 7.1650E-04 -1.4360E-03 4.9034E-04 -6.9151E-05 2.5350E-06 2.7918E-07 -2.0254E-08

[0118] Table 10

[0119] 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 magnitude 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.

[0120] Example 6

[0121] 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.

[0122] 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.

[0123] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive 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 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 sixth lens E6 has positive optical 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 surface S1 to S14 and is ultimately imaged on the imaging surface S15.

[0124] In Example 6, the total effective focal length f of the optical imaging lens is 6.88 mm, the on-axis distance TTL from the object-side surface S1 of the first lens element E1 to the imaging surface S15 is 6.70 mm, and the half-diagonal length ImgH of the effective pixel area on the imaging surface S15 is 3.47 mm.

[0125] 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.

[0126]

[0127] Table 11

[0128] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -4.2770E-03 -3.6717E-03 6.8991E-03 -9.6968E-03 8.1611E-03 -4.3858E-03 1.4614E-03 -2.8195E-04 2.3640E-05 S2 -4.8278E-03 2.7604E-02 -8.9932E-04 -1.8958E-02 1.9602E-02 -1.0045E-02 2.6004E-03 -3.0931E-04 1.2327E-05 S3 8.3455E-03 3.5629E-02 9.5162E-03 -5.8196E-02 7.4940E-02 -5.3908E-02 2.3097E-02 -5.5713E-03 5.7805E-04 S4 -2.7098E-02 6.6880E-02 -8.0066E-02 5.2618E-02 -1.4112E-02 -1.9108E-03 1.2801E-03 4.7868E-05 -4.6984E-05 S5 -4.2535E-02 2.6254E-02 7.6948E-03 -6.9274E-02 1.4134E-01 -1.3849E-01 7.3791E-02 -2.0832E-02 2.5058E-03 S6 2.1924E-02 -3.4839E-02 9.6264E-02 -1.7735E-01 2.9969E-01 -3.3560E-01 2.3852E-01 -9.7474E-02 1.7720E-02 S7 -1.4784E-01 4.1813E-01 -1.2463E+00 2.8564E+00 -4.6844E+00 5.1911E+00 -3.6605E+00 1.4758E+00 -2.5935E-01 S8 1.7600E-02 1.9294E-02 -9.4184E-02 2.3239E-01 -3.3263E-01 3.0020E-01 -1.6687E-01 5.1602E-02 -6.7767E-03 S9 3.1018E-02 -1.9679E-02 -3.0803E-02 4.6130E-02 -3.0547E-02 1.1945E-02 -2.8325E-03 3.7703E-04 -2.1573E-05 S10 3.0023E-02 -1.7181E-02 -8.5905E-03 1.0917E-02 -5.3519E-03 1.5527E-03 -2.7457E-04 2.6910E-05 -1.1018E-06 S11 -3.1158E-02 1.5053E-02 -3.2588E-03 -2.7748E-03 2.1012E-03 -6.0849E-04 9.0341E-05 -6.8219E-06 2.0802E-07 S12 -5.6074E-02 2.4801E-02 -1.1000E-02 3.7061E-03 -9.6330E-04 1.8752E-04 -2.4180E-05 1.7550E-06 -5.3215E-08

[0129] Table 12

[0130] 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.

[0131] In summary, Examples 1 to 6 respectively satisfy the relationships shown in Table 13.

[0132]

[0133]

[0134] Table 13

[0135] 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.

[0136] 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: The first lens has positive refractive power, its object-side surface is convex and its image-side surface is concave; a second lens having positive refractive power, with a convex object-side surface and a concave image-side surface; 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 negative optical power, whose object-side surface is concave and whose image-side surface is convex; a fifth lens element having negative optical power, with its object-side surface being concave and its image-side surface being concave; a sixth lens element having positive optical power and a convex object-side surface; The number of lenses having optical power in the optical imaging lens is six; The total effective focal length f of the optical imaging lens satisfies 6.88 mm ≤ f ≤ 7.56 mm; The effective focal length f1 of the first lens, the effective focal length f2 of the second lens, and the effective focal length f6 of the sixth lens satisfy 0.7<(f1+f6) / f2<1.

4.

2. The optical imaging lens according to claim 1, wherein: A 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 a total effective focal length f of the optical imaging lens satisfy 0.9<TTL / f<1.

0.

3. The optical imaging lens according to claim 1, wherein: A curvature radius R7 of the object-side surface of the fourth lens and a curvature radius R8 of the image-side surface of the fourth lens satisfy -1.3<(R7+R8) / f≤-0.

97.

4. The optical imaging lens according to claim 1, wherein: 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 -2.58<R9 / R10≤-0.

15.

5. The optical imaging lens according to claim 1, wherein: The effective focal length f3 of the third lens, the effective focal length f4 of the fourth lens, and the effective focal length f5 of the fifth lens satisfy 0.25<(f3+f5) / f4<0.

65.

6. The optical imaging lens according to claim 1, wherein: The maximum field of view (FOV) of the optical imaging lens satisfies 48.8°≤FOV≤53.0°.

7. The optical imaging lens according to claim 1, wherein: A center thickness CT5 of the fifth lens on the optical axis, a distance T56 between the fifth lens and the sixth lens on the optical axis, and a center thickness CT6 of the sixth lens on the optical axis satisfy 0.5<(CT5+T56) / CT6<0.

7.

8. The optical imaging lens according to any one of claims 1 to 7, wherein: An effective semi-aperture DT12 of the image-side surface of the first lens and an effective semi-aperture DT42 of the image-side surface of the fourth lens satisfy 1.25≤DT12 / DT42<1.

4.

9. The optical imaging lens according to claim 1, wherein: The optical imaging lens includes an aperture arranged on the optical axis; An axial distance SL from the aperture to the imaging plane and a distance TTL from the object-side surface of the first lens to the imaging plane on the optical axis satisfy 0.86<SL / TTL<0.

90.

10. The optical imaging lens according to claim 1, wherein: A combined focal length f1234 of the first lens, the second lens, the third lens, and the fourth lens and a combined focal length f56 of the fifth lens and the sixth lens satisfy -0.6<f1234 / f56≤-0.

39.

11. The optical imaging lens according to any one of claims 1 to 7, 9, and 10, wherein: An effective semi-aperture DT62 of the image-side surface of the sixth lens and an effective semi-aperture DT11 of the object-side surface of the first lens satisfy 1.49≤DT62 / DT11≤1.60.

Images