Optical imaging lens

Abstract

The present application discloses an optical imaging lens, which sequentially includes, from the object side to the image side along the optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens having optical powers. The optical imaging lens satisfies the following conditional expressions: TTL / ImgH < 1.5; 2.5 < f3 / f < 4.5; -3.0 < f5 / f6 < -1.0; and 0.5 < ET6 / T56 < 2.5; where TTL is the distance on the optical axis from the object side surface of the first lens to the imaging surface of the optical imaging lens, ImgH is half of the diagonal length of the effective pixel region on the imaging surface, f3 is the effective focal length of the third lens, f is the total effective focal length of the optical imaging lens, f5 is the effective focal length of the fifth lens, f6 is the effective focal length of the sixth lens, ET6 is the edge thickness of the sixth lens, and T56 is the distance on the optical axis between the fifth lens and the sixth lens.

Description

Technical Field

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

[0002] In recent years, with the rapid popularization of smart mobile devices such as mobile phones, computers and cameras, high-definition camera functions are an indispensable and necessary function of smart mobile devices. At the same time, camera modules with multiple cameras have become the development trend of smart phones. However, with the trend of thinner and lighter smart mobile devices, the design of the accompanying imaging lens has brought great challenges, requiring the imaging lens to be as small as possible.

[0003] However, the design of optical imaging lenses requires consideration of many factors. It is not possible to produce a miniaturized lens with excellent imaging quality simply by scaling it up proportionally. The feasibility of the actual molding and assembly process must also be considered. Summary of the invention

[0004] On one hand, 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 with optical power, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens.

[0005] In one embodiment, 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 half the diagonal length of the effective pixel area on the imaging plane of the optical imaging lens ImgH may satisfy: TTL / ImgH<1.5.

[0006] In one embodiment, the effective focal length f3 of the third lens and the total effective focal length f of the optical imaging lens may satisfy: 2.5 <f3 / f<4.5。

[0007] In one embodiment, an edge thickness ET6 of the sixth lens and a spacing distance T56 between the fifth lens and the sixth lens on the optical axis may satisfy: 0.5<ET6 / T56<2.5.

[0008] In one embodiment, the center thickness CT3 of the third lens on the optical axis, the center thickness CT4 of the fourth lens on the optical axis, the center thickness CT5 of the fifth lens on the optical axis, the spacing distance T34 between the third lens and the fourth lens on the optical axis, and the spacing distance T45 between the fourth lens and the fifth lens on the optical axis may satisfy: (CT3+CT4+CT5) / (T34+T45)<2.

[0009] In one embodiment, the effective focal length f4 of the fourth lens and the total effective focal length f of the optical imaging lens may satisfy: 1.0<f4 / f<9.0. Optionally, 3<f4 / f<9.

[0010] In one embodiment, the spacing distance T56 between the fifth lens and the sixth lens on the optical axis and 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 may satisfy: 0.1<T56 / TTL<0.17.

[0011] In one embodiment, the effective focal length f5 of the fifth lens and the effective focal length f6 of the sixth lens may satisfy: -3.0<f5 / f6<-1.0.

[0012] In one embodiment, the effective focal length f5 of the fifth lens, the effective focal length f6 of the sixth lens, and the total effective focal length f of the optical imaging lens may satisfy: 1.2<(f5+|f6|) / f<2.5.

[0013] In one embodiment, the curvature radius R8 of the image-side surface of the fourth lens element and the total effective focal length f of the optical imaging lens may satisfy: 0<R8 / f<5.0.

[0014] In one embodiment, the sum of the spacing distances ΣT between any two adjacent lenses of the first lens to the sixth lens on the optical axis and the sum of the center thicknesses ΣH of the first lens to the sixth lens on the optical axis may satisfy: ΣT<2.0mm; ΣH<2.5mm.

[0015] In one embodiment, the sum of the spacing distances ΣT between any two adjacent lenses of the first lens to the sixth lens on the optical axis and the sum of the center thicknesses ΣH of the first lens to the sixth lens on the optical axis may satisfy: 0.5<ΣT / ΣH<0.9.

[0016] 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: 0.3≤(R9+R10) / (R9-R10)<0.5.

[0017] In one embodiment, the second lens element may have negative refractive power, and its object-side surface may be concave, and its image-side surface may be concave.

[0018] In one embodiment, the third lens element may have positive refractive power, and its object-side surface may be convex, and its image-side surface may be concave.

[0019] In one embodiment, the fifth lens element may have positive refractive power, and its object-side surface may be convex, and its image-side surface may be convex.

[0020] In one embodiment, the optical imaging lens may further include an aperture stop, and the aperture stop is disposed between the second lens and the third lens.

[0021] On the other hand, 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 with positive optical power; a second lens with optical power; a third lens with optical power; a fourth lens with optical power; a fifth lens with positive optical power, whose object-side surface is convex and whose image-side surface is convex; and a sixth lens with negative optical power.

[0022] In one embodiment, the total effective focal length f of the optical imaging lens, the maximum half field angle Semi-FOV of the optical imaging lens, and the curvature radius R4 of the image side surface of the second lens may satisfy: 0.3<f×tan(Semi-FOV) / R4<0.8.

[0023] In one embodiment, a distance SAG42 from the intersection of the image side surface of the fourth lens and the optical axis to the vertex of the effective radius of the image side surface of the fourth lens on the optical axis and a spacing distance T45 between the fourth lens and the fifth lens on the optical axis may satisfy: |SAG42| / T45<3.5.

[0024] In one embodiment, a curvature radius R7 of the object-side surface of the fourth lens, a curvature radius R8 of the image-side surface of the fourth lens, and a total effective focal length f of the optical imaging lens may satisfy: 0<(R7+R8) / f<7.

[0025] In one embodiment, the effective focal length f4 of the fourth lens and the total effective focal length f of the optical imaging lens may satisfy: 1.0<f4 / f<9.0. Optionally, 3<f4 / f<9.

[0026] In one embodiment, the second lens element may have negative optical power, and its image-side surface may be concave.

[0027] In one embodiment, the third lens element may have positive refractive power, and its image-side surface may be concave.

[0028] In one embodiment, the fourth lens element may have positive refractive power, and its object-side surface may be convex, and its image-side surface may be concave.

[0029] The present application adopts seven lenses, and through the reasonable allocation of the optical focal length, surface shape, center thickness of each lens and axial spacing between each lens, the above-mentioned optical imaging lens has at least one beneficial effect of high resolution, small size, and easy processing and manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0031] Figure 1 A schematic structural diagram of an optical imaging lens according to Embodiment 1 of the present application is shown;

[0032] FIG. 2A to FIG. 2D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 1 are respectively shown;

[0033] Figure 3 A schematic structural diagram of an optical imaging lens according to Embodiment 2 of the present application is shown;

[0034] FIG. 4A to FIG. 4D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 2 are respectively shown;

[0035] Figure 5 A schematic structural diagram of an optical imaging lens according to Embodiment 3 of the present application is shown;

[0036] FIG. 6A to FIG. 6D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 3 are respectively shown;

[0037] Figure 7 A schematic structural diagram of an optical imaging lens according to Embodiment 4 of the present application is shown;

[0038] FIG. 8A to FIG. 8D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 4 are respectively shown;

[0039] Fig. 9 A schematic structural diagram of an optical imaging lens according to Embodiment 5 of the present application is shown;

[0040] FIG. 10A to FIG. 10D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 5 are respectively shown;

[0041] Fig.11 A schematic structural diagram of an optical imaging lens according to Embodiment 6 of the present application is shown;

[0042] FIG. 12A to FIG. 12D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 6 are respectively shown. DETAILED DESCRIPTION

[0043] In order to better understand the present application, a more detailed description will be made of various aspects of the present application with reference to the accompanying drawings. It should be understood that these detailed descriptions are only 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.

[0044] It should be noted that in this specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the features. Therefore, without departing from the teaching of the present application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0045] In the drawings, the thickness, size and shape of the lenses have been slightly exaggerated for ease of explanation. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to the shapes of the spherical or aspherical surfaces shown in the drawings. The drawings are only examples and are not drawn strictly to scale.

[0046] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object is called the object side of the lens, and the surface of each lens closest to the imaging plane is called the image side of the lens.

[0047] 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 exclude 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 listed 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.

[0048] Unless otherwise defined, all terms (including technical terms and scientific terms) used in this article have the same meaning as commonly understood by ordinary technicians in the field to which this application belongs. It should also be understood that terms (such as terms defined in commonly used dictionaries) should be interpreted as having the same meaning as their meaning in the context of the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined in this article.

[0049] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present 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.

[0050] The features, principles and other aspects of the present application are described in detail below.

[0051] The optical imaging lens according to an exemplary embodiment of the present application may include six lenses with optical powers, 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 in sequence along the optical axis from the object side to the image side. There may be a spacing distance between any two adjacent lenses among the first lens to the sixth lens.

[0052] In the exemplary embodiment, the first lens may have a positive optical power; the second lens has an optical power; the third lens has an optical power; the fourth lens has an optical power; the fifth lens may have a positive optical power, its object side may be convex, and its image side may be convex; the sixth lens may have a negative optical power. Reasonably configuring the surface types of the first lens to the sixth lens can not only effectively converge the light rays on the imaging surface, but also slow down the deflection of the light rays on the imaging surface and reduce the sensitivity of the first lens to the sixth lens.

[0053] In the exemplary embodiment, the second lens may have a negative optical power, its object side may be concave, and its image side may be concave.

[0054] In the exemplary embodiment, the third lens may have a positive optical power, its object side may be convex, and its image side may be concave.

[0055] In the exemplary embodiment, the fourth lens may have a positive optical power, its object side may be convex, and its image side may be concave.

[0056] In the exemplary embodiment, the optical imaging lens according to the present application may satisfy: TTL / ImgH < 1.5, where TTL is the distance from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis, and ImgH is half of the diagonal length of the effective pixel region on the imaging surface of the optical imaging lens. Satisfying TTL / ImgH < 1.5 can ensure that the optical imaging lens has a smaller size while still having a sufficiently large image surface to present more detailed information of the object being photographed.

[0057] In the exemplary embodiment, the optical imaging lens according to the present application may satisfy: 2.5 < f3 / f < 4.5, where f3 is the effective focal length of the third lens and f is the total effective focal length of the optical imaging lens. Reasonably controlling this ratio can, while ensuring that the camera lens group has a high aberration correction ability, effectively reduce the astigmatism and field curvature generated by the front lenses. At the same time, it can also avoid total reflection caused by too large a light deflection angle and cooperate with other lenses to better correct the aberration of the camera lens group.

[0058] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.5<ET6 / T56<2.5, where ET6 is the edge thickness of the sixth lens, and T56 is the spacing distance between the fifth lens and the sixth lens on the optical axis. Satisfying 0.5<ET6 / T56<2.5 can not only ensure the processability of the sixth lens, but also reduce the main ray angle of the imaging plane, so as to achieve better matching between the optical imaging lens and the chip.

[0059] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: (CT3+CT4+CT5) / (T34+T45)<2, wherein CT3 is the center thickness of the third lens on the optical axis, CT4 is the center thickness of the fourth lens on the optical axis, CT5 is the center thickness of the fifth lens on the optical axis, T34 is the spacing distance between the third lens and the fourth lens on the optical axis, and T45 is the spacing distance between the fourth lens and the fifth lens on the optical axis. Satisfying (CT3+CT4+CT5) / (T34+T45)<2 can not only reasonably select the center thickness and spacing distance of the lens, but also be conducive to providing more relaxed tolerance conditions for actual processing and assembly processes.

[0060] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1.0<f4 / f<9.0, where f4 is the effective focal length of the fourth lens, and f is the total effective focal length of the optical imaging lens. More specifically, f4 and f may further satisfy: 3.0<f4 / f<9.0. Satisfying 1.0<f4 / f<9.0 can effectively slow down the deflection of light on the object side of the fourth lens, reduce the sensitivity of the fourth lens, and balance the field curvature and astigmatism generated by the fourth lens.

[0061] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.1<T56 / TTL<0.17, wherein T56 is the distance between the fifth lens and the sixth lens on the optical axis, and TTL is the distance between the object side of the first lens and the imaging surface of the optical imaging lens on the optical axis. Satisfying 0.1<T56 / TTL<0.17 can reduce the deflection angle of the light between the fifth lens and the sixth lens, and avoid the distance between the fifth lens and the sixth lens being too large, thereby reducing the difficulty of actual assembly.

[0062] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: -3.0<f5 / f6<-1.0, where f5 is the effective focal length of the fifth lens and f6 is the effective focal length of the sixth lens. More specifically, f5 and f6 may further satisfy: -2.6<f5 / f6<-1.3. Satisfying -3.0<f5 / f6<-1.0 can control and reduce the deflection angle between the fifth lens and the sixth lens, balance the field curvature and astigmatism generated by the fifth lens and the sixth lens, and alleviate the ghost phenomenon.

[0063] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1.2<(f5+|f6|) / f<2.5, where f5 is the effective focal length of the fifth lens, f6 is the effective focal length of the sixth lens, and f is the total effective focal length of the optical imaging lens. Satisfying 1.2<(f5+|f6|) / f<2.5 can effectively reduce the astigmatism and field curvature generated by the front lens, and avoid total reflection ghost images caused by excessive light deflection angles.

[0064] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0<R8 / f<5.0, where R8 is the radius of curvature of the image side of the fourth lens, and f is the total effective focal length of the optical imaging lens. Reasonable configuration of the radius of curvature of the image side of the fourth lens can reduce the sensitivity and processing difficulty of the fourth lens, and help correct spherical aberration.

[0065] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: ΣT<2.0 mm, where ΣT is the sum of the distances between any two adjacent lenses from the first lens to the sixth lens on the optical axis. Satisfying ΣT<2.0 mm is conducive to achieving a small size of the optical imaging lens.

[0066] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: ΣH<2.5mm, where ΣH is the sum of the center thicknesses of the first lens to the sixth lens on the optical axis. Satisfying ΣH<2.5mm is conducive to achieving a small size of the optical imaging lens.

[0067] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.5<ΣT / ΣH<0.9, where ΣT is the sum of the spacing distances between any two adjacent lenses from the first lens to the sixth lens on the optical axis, and ΣH is the sum of the center thicknesses of the first lens to the sixth lens on the optical axis. Satisfying 0.5<ΣT / ΣH<0.9 can not only satisfy the matching of the optical imaging lens and the chip's main ray angle, but also control the overall size of the optical imaging lens.

[0068] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.3≤(R9+R10) / (R9-R10)<0.5, where R9 is the radius of curvature of the object side surface of the fifth lens, and R10 is the radius of curvature of the image side surface of the fifth lens. By controlling the range of (R9+R10) / (R9-R10), the incident angle and the exit angle of the light on the fifth lens can be reduced, the sensitivity of the object side surface and the image side surface of the fifth lens can be reduced, and the high-order coma generated by the object side surface and the image side surface of the fifth lens can be effectively balanced.

[0069] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.3<f×tan(Semi-FOV) / R4<0.8, where f is the total effective focal length of the optical imaging lens, Semi-FOV is the maximum half field of view angle of the optical imaging lens, and R4 is the radius of curvature of the image side surface of the second lens. Satisfying 0.3<f×tan(Semi-FOV) / R4<0.8 can ensure that the optical imaging lens has a small size while still having a large enough image surface to present more detailed information of the subject.

[0070] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: |SAG42| / T45<3.5, wherein SAG42 is the distance from the intersection of the image side surface of the fourth lens and the optical axis to the effective radius vertex of the image side surface of the fourth lens on the optical axis, and T45 is the spacing distance between the fourth lens and the fifth lens on the optical axis. More specifically, SAG42 and T45 may further satisfy: |SAG42| / T45<1.0. Satisfying |SAG42| / T45<3.5 can effectively reduce the deflection of light on the image side surface of the fourth lens, reduce the sensitivity of the image side surface of the fourth lens, and effectively balance the spherical aberration and astigmatism generated by the fourth lens.

[0071] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0<(R7+R8) / f<7, where R7 is the radius of curvature of the object side surface of the fourth lens, R8 is the radius of curvature of the image side surface of the fourth lens, and f is the total effective focal length of the optical imaging lens. By controlling the range of 0<(R7+R8) / f<7, the incident angle and the exit angle of the light at the fourth lens can be reduced, the sensitivity of the object side surface and the image side surface of the fourth lens can be reduced, and the high-order coma generated by the object side surface and the image side surface of the fourth lens can be effectively balanced.

[0072] In an exemplary embodiment, the optical imaging lens according to the present application further includes an aperture disposed between the second lens and the third lens. Optionally, the optical imaging lens may further include a filter for correcting color deviation and / or a protective glass for protecting a photosensitive element located on the imaging surface.

[0073] The optical imaging lens according to the above-mentioned embodiment of the present application may use multiple lenses, such as the six lenses described above. By reasonably allocating the focal length, surface shape, center thickness of each lens, and axial spacing between lenses, etc., the incident light can be effectively converged, the total optical length of the imaging lens can be reduced, and the processability of the imaging lens can be improved, making the optical imaging lens more conducive to production and processing and applicable to portable electronic devices. The optical imaging lens configured as above can have characteristics such as high resolution and small size.

[0074] In the 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 mirror surfaces from the object side of the first lens to the image side of the sixth lens is an aspherical mirror surface. The characteristic of the 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 occurring during imaging can be eliminated as much as possible, thereby improving the imaging quality. Optionally, at least one of the object side and image side 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 and image side 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.

[0075] However, those skilled in the art should understand that, without departing from the technical solution claimed in the present application, the number of lenses constituting the optical imaging lens can be changed to obtain the various results and advantages described in this specification. For example, although six lenses are described as an example in the embodiments, the optical imaging lens is not limited to including six lenses. If necessary, the optical imaging lens may also include other numbers of lenses.

[0076] Specific embodiments of the optical imaging lens applicable to the above-mentioned embodiments are further described below with reference to the accompanying drawings.

[0077] Example 1

[0078] The following reference Figures 1 to 2D An optical imaging lens according to Embodiment 1 of the present application is described. Figure 1 A schematic structural diagram of an optical imaging lens according to Embodiment 1 of the present application is shown.

[0079] like Figure 1 As shown, the optical imaging lens includes, from the object side to the image side, a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7 and an imaging surface S15.

[0080] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has negative focal power, and its object side surface S3 is concave, and its image side surface S4 is concave. The third lens E3 has positive focal power, and its object side surface S5 is convex, and its image side surface S6 is concave. The fourth lens E4 has positive focal power, and its object side surface S7 is convex, and its image side surface S8 is concave. The fifth lens E5 has positive focal power, and its object side surface S9 is convex, and its image side surface S10 is convex. The sixth lens E6 has negative focal power, and its object side surface S11 is convex, and its image side surface S12 is concave. The filter E7 has an object side surface S13 and an image side surface S14. The light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0081] Table 1 shows the basic parameters of the optical imaging lens of Example 1, wherein the units of the radius of curvature, thickness / distance and focal length are all millimeters (mm).

[0082]

[0083] Table 1

[0084] In this example, the total effective focal length f of the optical imaging lens is 4.30 mm, the total length TTL of the optical imaging lens (i.e., the distance from the object-side surface S1 of the first lens E1 to the imaging surface S15 of the optical imaging lens on the optical axis) is 5.00 mm, and half of the diagonal length ImgH of the effective pixel area on the imaging surface S15 of the optical imaging lens is 3.63 mm.

[0085] 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, and the surface shape x of each aspherical lens can be defined by but not limited to the following aspherical surface formula:

[0086]

[0087] Wherein, x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at a height of h along the optical axis; c is the paraxial curvature of the aspheric surface, c=1 / R (i.e., the paraxial curvature c is the reciprocal of the curvature radius R in Table 1 above); k is the cone coefficient; Ai is the correction coefficient of the i-th order of the aspheric surface. Table 2 below gives the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A56, A57, A58, A59, A60, A61, A71, A72, A73, A74, A75 10 , A 12 , A 14 , A 16 , A 18 and A 20 .

[0088]

[0089]

[0090] Table 2

[0091] Figure 2A The axial chromatic aberration curve of the optical imaging lens of Example 1 is shown, which indicates the deviation of light of different wavelengths from the focal point behind the lens. Figure 2B The astigmatism curve of the optical imaging lens of Example 1 is shown, which represents the meridional image curvature and the sagittal image 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 image heights. Figure 2D The magnification 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. FIG. 2A to FIG. 2D It can be seen that the optical imaging lens provided in Example 1 can achieve good imaging quality.

[0092] Example 2

[0093] The following reference Figures 3 to 4D The optical imaging lens according to Embodiment 2 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Figure 3 A schematic structural diagram of an optical imaging lens according to Embodiment 2 of the present application is shown.

[0094] like Figure 3 As shown, the optical imaging lens includes, from the object side to the image side, a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7 and an imaging surface S15.

[0095] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has negative focal power, and its object side surface S3 is concave, and its image side surface S4 is concave. The third lens E3 has positive focal power, and its object side surface S5 is convex, and its image side surface S6 is concave. The fourth lens E4 has positive focal power, and its object side surface S7 is convex, and its image side surface S8 is concave. The fifth lens E5 has positive focal power, and its object side surface S9 is convex, and its image side surface S10 is convex. The sixth lens E6 has negative focal power, and its object side surface S11 is convex, and its image side surface S12 is concave. The filter E7 has an object side surface S13 and an image side surface S14. The light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0096] In this example, the total effective focal length f of the optical imaging lens is 4.34 mm, the total length TTL of the optical imaging lens is 4.95 mm, and half of the diagonal length ImgH of the effective pixel area on the imaging surface S15 of the optical imaging lens is 3.68 mm.

[0097] Table 3 shows the basic parameters of the optical imaging lens of Example 2, wherein the units of the radius of curvature, 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, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0098]

[0099]

[0100] Table 3

[0101] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 1.8047E-02 -6.4667E-02 2.2270E-01 -4.5606E-01 5.4488E-01 -3.9987E-01 1.7357E-01 -4.1304E-02 4.2631E-03 S2 -8.0685E-02 7.4947E-02 -1.2490E-01 2.5350E-01 -3.0592E-01 1.6732E-01 -4.5321E-03 -3.3120E-02 9.8850E-03 S3 -7.9208E-02 2.6905E-01 -1.4419E-01 -1.1656E+00 4.7577E+00 -8.9885E+00 9.3593E+00 -5.1376E+00 1.1625E+00 S4 -4.8304E-02 3.2627E-01 -2.0444E-01 -4.2263E+00 2.5677E+01 -7.4053E+01 1.1772E+02 -9.8896E+01 3.4417E+01 S5 -1.3965E-01 -3.1892E-01 2.9429E+00 -1.4537E+01 4.1748E+01 -7.2979E+01 7.5430E+01 -4.1674E+01 9.3215E+00 S6 -1.5094E-01 3.6394E-01 -2.8016E+00 1.1962E+01 -3.1139E+01 4.9936E+01 -4.8227E+01 2.5797E+01 -5.8535E+00 S7 -1.2544E-01 -8.9748E-02 4.0098E-01 -9.6695E-01 1.4158E+00 -1.2305E+00 6.2779E-01 -1.7234E-01 1.9261E-02 S8 -8.2906E-02 -1.3971E-01 4.9447E-01 -9.3248E-01 1.1459E+00 -8.4985E-01 3.6431E-01 -8.3381E-02 7.9062E-03 S9 2.5407E-02 -1.1873E-01 1.5482E-01 -1.6169E-01 1.1767E-01 -5.3012E-02 1.3907E-02 -1.9431E-03 1.1175E-04 S10 4.3171E-02 -5.2061E-02 5.9729E-02 -6.9334E-02 5.2175E-02 -2.2609E-02 5.5180E-03 -7.0926E-04 3.7547E-05 S11 -2.9762E-01 2.3335E-01 -1.5886E-01 8.7359E-02 -3.2149E-02 7.4613E-03 -1.0506E-03 8.2026E-05 -2.7251E-06 S12 -1.0337E-01 5.9997E-02 -2.6364E-02 8.2860E-03 -1.7673E-03 2.4621E-04 -2.1226E-05 1.0208E-06 -2.0857E-08

[0102] Table 4

[0103] Figure 4A The axial chromatic aberration curve of the optical imaging lens of Example 2 is shown, which indicates that light of different wavelengths deviates from the focal point behind the lens. Figure 4B The astigmatism curve of the optical imaging lens of Example 2 is shown, which represents the meridional image curvature and the sagittal image 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 image heights. Figure 4D The magnification 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. FIG. 4A to FIG. 4D It can be seen that the optical imaging lens provided in Example 2 can achieve good imaging quality.

[0104] Example 3

[0105] The following reference Figures 5 to 6D An optical imaging lens according to Embodiment 3 of the present application is described. Figure 5 A schematic structural diagram of an optical imaging lens according to Embodiment 3 of the present application is shown.

[0106] like Figure 5 As shown, the optical imaging lens includes, from the object side to the image side, a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7 and an imaging surface S15.

[0107] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has negative focal power, and its object side surface S3 is concave, and its image side surface S4 is concave. The third lens E3 has positive focal power, and its object side surface S5 is convex, and its image side surface S6 is concave. The fourth lens E4 has positive focal power, and its object side surface S7 is convex, and its image side surface S8 is concave. The fifth lens E5 has positive focal power, and its object side surface S9 is convex, and its image side surface S10 is convex. The sixth lens E6 has negative focal power, and its object side surface S11 is convex, and its image side surface S12 is concave. The filter E7 has an object side surface S13 and an image side surface S14. The light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0108] In this example, the total effective focal length f of the optical imaging lens is 4.30 mm, the total length TTL of the optical imaging lens is 4.95 mm, and half of the diagonal length ImgH of the effective pixel area on the imaging surface S15 of the optical imaging lens is 3.58 mm.

[0109] Table 5 shows the basic parameters of the optical imaging lens of Example 3, wherein the units of the radius of curvature, 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, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0110]

[0111] Table 5

[0112]

[0113]

[0114] Table 6

[0115] Fig. 6A The axial chromatic aberration curve of the optical imaging lens of Example 3 is shown, which indicates that light of different wavelengths deviates from the focal point behind the lens. Figure 6B The astigmatism curve of the optical imaging lens of Example 3 is shown, which represents the meridional image curvature and the sagittal image curvature. Figure 6C The distortion curve of the optical imaging lens of Example 3 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig.6D The magnification 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. FIG. 6A to FIG. 6D It can be seen that the optical imaging lens provided in Example 3 can achieve good imaging quality.

[0116] Example 4

[0117] The following reference Figures 7 to 8D An optical imaging lens according to Embodiment 4 of the present application is described. Figure 7 A schematic structural diagram of an optical imaging lens according to Embodiment 4 of the present application is shown.

[0118] like Figure 7 As shown, the optical imaging lens includes, from the object side to the image side, a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7 and an imaging surface S15.

[0119] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has negative focal power, and its object side surface S3 is concave, and its image side surface S4 is concave. The third lens E3 has positive focal power, and its object side surface S5 is convex, and its image side surface S6 is concave. The fourth lens E4 has positive focal power, and its object side surface S7 is convex, and its image side surface S8 is concave. The fifth lens E5 has positive focal power, and its object side surface S9 is convex, and its image side surface S10 is convex. The sixth lens E6 has negative focal power, and its object side surface S11 is convex, and its image side surface S12 is concave. The filter E7 has an object side surface S13 and an image side surface S14. The light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0120] In this example, the total effective focal length f of the optical imaging lens is 3.85 mm, the total length TTL of the optical imaging lens is 4.47 mm, and half of the diagonal length ImgH of the effective pixel area on the imaging surface S15 of the optical imaging lens is 3.12 mm.

[0121] Table 7 shows the basic parameters of the optical imaging lens of Example 4, wherein the units of the radius of curvature, 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, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0122]

[0123] Table 7

[0124] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 1.8966E-02 -3.6923E-02 8.7226E-02 -1.4768E-01 6.7975E-02 5.7054E-02 -9.8231E-02 5.1016E-02 -9.0883E-03 S2 -1.1689E-01 1.1857E-01 -2.7954E-01 5.7069E-01 -6.7001E-01 4.2314E-01 -1.1788E-01 -4.9934E-03 7.6023E-03 S3 -8.3428E-02 6.1393E-01 -2.3518E+00 6.6842E+00 -1.2736E+01 1.5630E+01 -1.1757E+01 4.8950E+00 -8.5434E-01 S4 -5.2897E-02 1.0044E+00 -6.5788E+00 2.8982E+01 -8.1175E+01 1.3937E+02 -1.3972E+02 7.2843E+01 -1.4299E+01 S5 -1.3718E-01 7.4315E-02 -5.9609E-01 3.4430E+00 -1.4763E+01 3.7632E+01 -5.6023E+01 4.5313E+01 -1.5389E+01 S6 -1.5487E-01 3.0907E-01 -2.2564E+00 1.1132E+01 -3.4282E+01 6.4379E+01 -7.1841E+01 4.3914E+01 -1.1285E+01 S7 -1.2987E-01 5.4172E-02 -6.9938E-02 -2.3229E-01 7.5081E-01 -1.0088E+00 6.8521E-01 -2.1064E-01 1.9943E-02 S8 -5.4692E-02 8.7066E-03 -7.0480E-02 1.1530E-01 -1.2552E-01 9.9737E-02 -5.0683E-02 1.4296E-02 -1.7044E-03 S9 7.3374E-03 -2.4008E-02 4.6295E-02 -8.5105E-02 8.1239E-02 -4.2837E-02 1.2632E-02 -1.9477E-03 1.2221E-04 S10 1.9209E-02 1.6078E-02 -3.5691E-03 -3.5294E-02 4.1228E-02 -2.0874E-02 5.5000E-03 -7.3745E-04 3.9861E-05 S11 -4.3906E-01 5.0532E-01 -4.1596E-01 2.2920E-01 -8.0109E-02 1.7527E-02 -2.3313E-03 1.7264E-04 -5.4638E-06 S12 -1.5610E-01 1.3447E-01 -7.8070E-02 2.9234E-02 -7.1320E-03 1.1206E-03 -1.0841E-04 5.8232E-06 -1.3210E-07

[0125] Table 8

[0126] Fig. 8A The axial chromatic aberration curve of the optical imaging lens of Example 4 is shown, which indicates the deviation of light of different wavelengths from the focal point behind the lens. Figure 8BThe astigmatism curve of the optical imaging lens of Example 4 is shown, which represents the meridional image curvature and the sagittal image curvature. Figure 8C The distortion curve of the optical imaging lens of Example 4 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig.8D The magnification 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. FIG. 8A to FIG. 8D It can be seen that the optical imaging lens provided in Example 4 can achieve good imaging quality.

[0127] Example 5

[0128] The following reference Figures 9 to 10D An optical imaging lens according to Embodiment 5 of the present application is described. Fig. 9 A schematic structural diagram of an optical imaging lens according to Embodiment 5 of the present application is shown.

[0129] like Fig. 9 As shown, the optical imaging lens includes, from the object side to the image side, a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7 and an imaging surface S15.

[0130] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has negative focal power, and its object side surface S3 is concave, and its image side surface S4 is concave. The third lens E3 has positive focal power, and its object side surface S5 is convex, and its image side surface S6 is concave. The fourth lens E4 has positive focal power, and its object side surface S7 is convex, and its image side surface S8 is concave. The fifth lens E5 has positive focal power, and its object side surface S9 is convex, and its image side surface S10 is convex. The sixth lens E6 has negative focal power, and its object side surface S11 is convex, and its image side surface S12 is concave. The filter E7 has an object side surface S13 and an image side surface S14. The light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0131] In this example, the total effective focal length f of the optical imaging lens is 3.87 mm, the total length TTL of the optical imaging lens is 4.52 mm, and half of the diagonal length ImgH of the effective pixel area on the imaging surface S15 of the optical imaging lens is 3.13 mm.

[0132] Table 9 shows the basic parameters of the optical imaging lens of Example 5, wherein the units of the radius of curvature, 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, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0133]

[0134] Table 9

[0135]

[0136]

[0137] Table 10

[0138] Fig. 10A The axial chromatic aberration curve of the optical imaging lens of Example 5 is shown, which indicates the deviation of light of different wavelengths from the focal point behind the lens. Fig. 10B The astigmatism curve of the optical imaging lens of Example 5 is shown, which represents the meridional image curvature and the sagittal image curvature. Fig. 10C The distortion curve of the optical imaging lens of Example 5 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig. 10D The magnification 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. FIG. 10A to FIG. 10D It can be seen that the optical imaging lens provided in Example 5 can achieve good imaging quality.

[0139] Example 6

[0140] The following reference Figures 11 to 12D An optical imaging lens according to Embodiment 6 of the present application is described. Fig.11 A schematic structural diagram of an optical imaging lens according to Example 6 of the present application is shown.

[0141] like Fig.11 As shown, the optical imaging lens includes, from the object side to the image side, a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7 and an imaging surface S15.

[0142] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has negative focal power, and its object side surface S3 is concave, and its image side surface S4 is concave. The third lens E3 has positive focal power, and its object side surface S5 is convex, and its image side surface S6 is concave. The fourth lens E4 has positive focal power, and its object side surface S7 is convex, and its image side surface S8 is concave. The fifth lens E5 has positive focal power, and its object side surface S9 is convex, and its image side surface S10 is convex. The sixth lens E6 has negative focal power, and its object side surface S11 is convex, and its image side surface S12 is concave. The filter E7 has an object side surface S13 and an image side surface S14. The light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0143] In this example, the total effective focal length f of the optical imaging lens is 3.90 mm, the total length TTL of the optical imaging lens is 4.40 mm, and half of the diagonal length ImgH of the effective pixel area on the imaging surface S15 of the optical imaging lens is 3.16 mm.

[0144] Table 11 shows the basic parameters of the optical imaging lens of Example 6, wherein the units of the radius of curvature, 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, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0145]

[0146] Table 11

[0147] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 1.8694E-02 -4.7107E-02 1.5044E-01 -3.4064E-01 3.8315E-01 -2.4286E-01 7.2250E-02 -2.5266E-03 -2.0624E-03 S2 -1.2862E-01 2.6420E-01 -1.0006E+00 2.3305E+00 -3.1321E+00 2.4937E+00 -1.1385E+00 2.5922E-01 -1.8442E-02 S3 -6.7979E-02 5.8688E-01 -2.4957E+00 7.2831E+00 -1.3707E+01 1.6421E+01 -1.2050E+01 4.9063E+00 -8.3915E-01 S4 -2.8476E-02 7.5452E-01 -4.1221E+00 1.4340E+01 -2.9705E+01 3.0646E+01 -3.6924E+00 -2.0311E+01 1.2707E+01 S5 -1.4554E-01 1.0382E-01 -6.7412E-01 3.7826E+00 -1.4306E+01 3.1182E+01 -3.9783E+01 2.8432E+01 -8.9450E+00 S6 -1.9026E-01 4.3841E-01 -2.5761E+00 1.0540E+01 -2.7637E+01 4.5266E+01 -4.5073E+01 2.5290E+01 -6.1462E+00 S7 -1.3021E-01 2.7806E-02 8.1901E-02 -7.3986E-01 1.7978E+00 -2.3911E+00 1.7925E+00 -6.8977E-01 1.0489E-01 S8 -6.8740E-02 4.3883E-02 -1.7290E-01 3.0999E-01 -3.8041E-01 3.1327E-01 -1.5645E-01 4.2617E-02 -4.9150E-03 S9 2.7237E-02 -7.7173E-02 7.8894E-02 -7.7486E-02 5.3594E-02 -2.2561E-02 5.3422E-03 -6.2052E-04 2.4187E-05 S10 5.3481E-02 -2.3101E-02 -5.2994E-03 -5.6422E-03 1.4838E-02 -9.1413E-03 2.6226E-03 -3.7083E-04 2.1110E-05 S11 -4.7700E-01 5.7230E-01 -5.0653E-01 3.0609E-01 -1.1832E-01 2.8795E-02 -4.2824E-03 3.5618E-04 -1.2711E-05 S12 -1.5233E-01 1.3033E-01 -7.8453E-02 3.1257E-02 -8.1476E-03 1.3702E-03 -1.4226E-04 8.2365E-06 -2.0211E-07

[0148] Table 12

[0149] Fig. 12A The axial chromatic aberration curve of the optical imaging lens of Example 6 is shown, which indicates the deviation of light of different wavelengths from the focal point behind the lens. Fig. 12B The astigmatism curve of the optical imaging lens of Example 6 is shown, which represents the meridional image curvature and the sagittal image curvature. Fig. 12C The distortion curve of the optical imaging lens of Example 6 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig.12D The magnification 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. FIG. 12A to FIG. 12D It can be seen that the optical imaging lens provided in Example 6 can achieve good imaging quality.

[0150] In summary, Examples 1 to 6 respectively satisfy the relationships shown in Table 13.

[0151] Conditional / Example 1 2 3 4 5 6 (CT3+CT4+CT5) / (T34+T45) 1.52 1.47 1.41 1.11 1.14 1.03 f3 / f 3.87 4.06 3.90 2.73 2.70 2.88 TTL / ImgH 1.38 1.35 1.38 1.43 1.44 1.39 ET6 / T56 2.36 2.09 1.94 0.90 0.84 1.03 T56 / TTL 0.09 0.10 0.11 0.12 0.17 0.11 (R9+R10) / (R9-R10) 0.49 0.24 0.25 0.37 0.26 0.30 f5 / f6 -1.42 -1.79 -1.71 -2.00 -2.13 -2.43 f4 / f 8.47 5.98 6.36 7.00 8.25 3.96 (f5+|f6|) / f 1.60 2.12 2.14 2.39 2.74 2.48 R8 / f 3.83 4.64 4.67 0.62 0.71 0.79 ΣT(mm) 1.50 1.49 1.59 1.68 1.82 1.62 ΣH(mm) 2.39 2.42 2.40 2.03 2.05 1.99 ΣT / ΣH 0.63 0.62 0.66 0.83 0.88 0.82 f×tan(Semi-FOV) / R4 0.79 0.76 0.66 0.38 0.42 0.36 |SAG42| / T45 0.30 0.25 0.23 0.14 0.13 0.04 (R7+R8) / f 5.99 6.64 6.75 1.19 1.35 1.39

[0152] Table 13

[0153] The present application also provides an imaging device, whose electronic photosensitive element can be a photosensitive coupled device (CCD) or a complementary metal oxide semiconductor element (CMOS). The imaging device can be an independent imaging device such as a digital camera, or an imaging module integrated in a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens described above.

[0154] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. An optical imaging lens, including, in order from the object side to the image side along the optical axis: A first lens having positive power, a second lens having negative power, a third lens having positive power, a fourth lens having positive power, a fifth lens having positive power and a sixth lens having negative power, characterized in that: The optical imaging lens satisfies the following conditional formula: 1.35≤TTL / ImgH≤1.44; 2.70≤f3 / f≤4.06; -2.43≤f5 / f6≤-1.42; 0.62 ≤ R8 / f ≤ 4.67; and 0.84≤ET6 / T56≤2.36, Wherein, TTL is the distance from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis, ImgH is half of the diagonal length of the effective pixel area on the imaging surface, f is the total effective focal length of the optical imaging lens, f3 is the effective focal length of the third lens, f5 is the effective focal length of the fifth lens, f6 is the effective focal length of the sixth lens, R8 is the curvature radius of the image side surface of the fourth lens, ET6 is the edge thickness of the sixth lens, and T56 is the spacing distance between the fifth lens and the sixth lens on the optical axis.

2. The optical imaging lens according to claim 1, wherein: The optical imaging lens satisfies 1.03≤(CT3+CT4+CT5) / (T34+T45)≤1.52, Among them, CT3 is the center thickness of the third lens on the optical axis, CT4 is the center thickness of the fourth lens on the optical axis, CT5 is the center thickness of the fifth lens on the optical axis, T34 is the spacing distance between the third lens and the fourth lens on the optical axis, and T45 is the spacing distance between the fourth lens and the fifth lens on the optical axis.

3. The optical imaging lens according to claim 1, wherein: The optical imaging lens satisfies 3.96≤f4 / f≤8.47, Wherein, f4 is the effective focal length of the fourth lens, and f is the total effective focal length of the optical imaging lens.

4. The optical imaging lens according to claim 1, wherein: The optical imaging lens satisfies 0.09≤T56 / TTL≤0.17, Wherein, T56 is the spacing distance between the fifth lens and the sixth lens on the optical axis, and TTL is the distance from the object side surface of the first lens to the imaging surface on the optical axis.

5. The optical imaging lens according to claim 1, wherein: The optical imaging lens satisfies 1.60≤(f5+|f6|) / f≤2.74, Wherein, f5 is the effective focal length of the fifth lens, f6 is the effective focal length of the sixth lens, and f is the total effective focal length of the optical imaging lens.

6. The optical imaging lens according to claim 1, wherein: The optical imaging lens satisfies the following conditional formula: 1.49 mm ≤ ΣT ≤ 1.82 mm; and 1.99mm≤ΣH≤2.42mm, Wherein, ΣT is the sum of the spacing distances between any two adjacent lenses from the first lens to the sixth lens on the optical axis, and ΣH is the sum of the center thicknesses of the first lens to the sixth lens on the optical axis.

7. The optical imaging lens according to claim 1, wherein: The optical imaging lens satisfies 0.62≤ΣT / ΣH≤0.

88.

8. The optical imaging lens according to claim 1, wherein: The optical imaging lens satisfies 0.24≤(R9+R10) / (R9-R10)≤0.49, Wherein, R9 is the curvature radius of the object-side surface of the fifth lens, and R10 is the curvature radius of the image-side surface of the fifth lens.

9. The optical imaging lens according to claim 1, wherein: The object side surface of the second lens is concave, and the image side surface is concave.

10. The optical imaging lens according to claim 1, wherein: The object side surface of the third lens is convex, and the image side surface is concave.

11. The optical imaging lens according to claim 1, wherein: The object side surface of the fifth lens is convex, and the image side surface is convex.

12. The optical imaging lens according to claim 1, wherein: The optical imaging lens further includes an aperture stop, which is disposed between the second lens and the third lens.

13. An optical imaging lens, comprising, in order from the object side to the image side along the optical axis: The first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens having optical power are characterized in that: The first lens has positive optical power; The second lens has negative optical power; The third lens has positive optical power; The fourth lens has positive refractive power; The fifth lens has positive refractive power, and its object side surface is convex, and its image side surface is convex; and The sixth lens has negative optical power; The optical imaging lens satisfies: 0.36≤f×tan(Semi-FOV) / R4≤0.79; 0.04≤|SAG42| / T45≤0.30; 3.96≤f4 / f≤8.47; and 1.19≤(R7+R8) / f≤6.75, Among them, f is the total effective focal length of the optical imaging lens, Semi-FOV is the maximum half field of view angle of the optical imaging lens, R4 is the radius of curvature of the image side surface of the second lens, SAG42 is the distance from the intersection of the image side surface of the fourth lens and the optical axis to the effective radius vertex of the image side surface of the fourth lens on the optical axis, T45 is the spacing distance between the fourth lens and the fifth lens on the optical axis, f4 is the effective focal length of the fourth lens, f is the total effective focal length of the optical imaging lens, R7 is the radius of curvature of the object side surface of the fourth lens, and R8 is the radius of curvature of the image side surface of the fourth lens.

14. The optical imaging lens according to claim 13, wherein: The image-side surface of the second lens is a concave surface.

15. The optical imaging lens according to claim 13, wherein: The image side surface of the third lens is a concave surface.

16. The optical imaging lens according to claim 13, wherein: The object-side surface of the fourth lens is convex, and the image-side surface is concave.

Images