Optical imaging lens

Abstract

The present application discloses 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 negative optical power, whose object side surface is concave and whose image side surface is convex; a fifth lens with positive optical power; and a sixth lens with negative optical power, whose object side surface is convex; 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 half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens satisfy the following conditions: 4.0mm<ImgH / (TTL / ImgH)<7.0mm, so that the optical imaging lens has the characteristics of ultra-large image surface, ultra-thinness, high-quality imaging, etc.

Description

Technical Field

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

[0002] In recent years, with the rapid development of smart terminals such as mobile phones, the improvement of mobile phone camera performance has become a direction that mobile phone manufacturers of various brands are competing for. Mobile phones with super large image plane, ultra-thinness and ultra-definition are becoming increasingly popular. Generally speaking, the larger the pixel of the camera module, the larger the image plane of its optical imaging lens. A development trend of high-end camera phones is super large image plane and ultra-definition. Now the main camera modules of flagship phones of mainstream mobile phone brands have basically achieved more than 48 million pixels, so their imaging lenses are mostly composed of six-piece or seven-piece lenses.

[0003] However, another development trend of high-end camera phones is ultra-thinness. Therefore, the phone design needs to achieve ultra-thin body thickness, and the structural design of the camera module also needs to achieve ultra-thinness, which also has corresponding requirements for the height of the camera module. Summary of the invention

[0004] The present application provides an optical imaging lens applicable to portable electronic products, which can at least solve or partially solve at least one of the above-mentioned shortcomings in the prior art, such as an optical imaging lens with ultra-large image surface and ultra-thin characteristics.

[0005] One aspect of the present application provides an optical imaging lens, which may include, 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 negative optical power, whose object-side surface is concave and whose image-side surface is convex; a fifth lens with positive optical power; and a sixth lens with negative optical power, whose object-side surface is convex.

[0006] In one embodiment, the distance TTL from the object side 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: 4.0mm<ImgH / (TTL / ImgH)<7.0mm.

[0007] 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<1.3.

[0008] In one embodiment, the total effective focal length f of the optical imaging lens and the maximum half field of view Semi-FOV of the optical imaging lens may satisfy: 5.0 mm<f×tan(Semi-FOV)<7.0 mm.

[0009] In one embodiment, the effective focal length f1 of the first lens and the effective focal length f5 of the fifth lens may satisfy: 0.7<f1 / f5<1.2.

[0010] In one embodiment, the effective focal length f4 of the fourth lens, the effective focal length f6 of the sixth lens, and the total effective focal length f of the optical imaging lens may satisfy: 0.6<(f6-f4) / f<2.0.

[0011] 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: 0.1<R7 / R8<0.7.

[0012] In one embodiment, a center thickness CT5 of the fifth lens on the optical axis, a center thickness CT6 of the sixth lens on the optical axis, and an air interval T56 between the fifth lens and the sixth lens on the optical axis may satisfy: 0.7<(CT5+CT6) / T56<1.5.

[0013] In one embodiment, the effective focal length f3 of the third lens and the curvature radius R6 of the image-side surface of the third lens may satisfy: -2.7<f3 / R6<-1.6.

[0014] In one embodiment, the maximum effective radius DT11 of the object side surface of the first lens, the maximum effective radius DT12 of the image side surface of the first lens, and the maximum effective radius DT62 of the image side surface of the sixth lens may satisfy: 1.3<DT62 / (DT11+DT12)<1.7.

[0015] In one embodiment, a center thickness CT5 of the fifth lens on the optical axis and an edge thickness ET5 of the fifth lens may satisfy: 1.6<CT5 / ET5<2.4.

[0016] In one embodiment, the on-axis distance SAG41 from the intersection of the object side surface of the fourth lens and the optical axis to the effective radius vertex of the object side surface of the fourth lens, the on-axis distance SAG42 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, the on-axis distance SAG51 from the intersection of the object side surface of the fifth lens and the optical axis to the effective radius vertex of the object side surface of the fifth lens, and the on-axis distance SAG52 from the intersection of the image side surface of the fifth lens and the optical axis to the effective radius vertex of the image side surface of the fifth lens may satisfy: 0.5<(SAG41+SAG42) / (SAG51+SAG52)<0.9.

[0017] In one embodiment, the on-axis distance SAG32 from the intersection of the image side surface of the third lens and the optical axis to the effective radius vertex of the image side surface of the third lens and the on-axis distance SAG62 from the intersection of the image side surface of the sixth lens and the optical axis to the effective radius vertex of the image side surface of the sixth lens may satisfy: 1.5<SAG62 / SAG32<3.4.

[0018] In one embodiment, the combined focal length f123 of the first lens, the second lens, and the third lens and the total effective focal length f of the optical imaging lens may satisfy: 0.7<f123 / f<1.0.

[0019] The optical imaging lens provided by the present application uses multiple lenses, such as the first lens to the sixth lens, and by reasonably controlling the relationship between the image height and the total optical length of the optical imaging lens, and optimizing the optical focal length and surface shape of each lens, the optical imaging lens can achieve characteristics such as ultra-large image surface, ultra-thinness, low sensitivity and high imaging quality. At the same time, each lens has a compact structure and good molding and processing performance, which can improve the production yield of the camera module. At the same time, the optical imaging lens according to the present application can achieve excellent infinite-distance imaging performance while ensuring excellent limited-distance imaging performance. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0021] Figure 1 A schematic structural diagram of an optical imaging lens according to Embodiment 1 of the present application is shown;

[0022] 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;

[0023] Figure 3 A schematic structural diagram of an optical imaging lens according to Embodiment 2 of the present application is shown;

[0024] 4A to 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;

[0025] Figure 5 A schematic structural diagram of an optical imaging lens according to Embodiment 3 of the present application is shown;

[0026] 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;

[0027] Figure 7A schematic structural diagram of an optical imaging lens according to Embodiment 4 of the present application is shown;

[0028] 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;

[0029] Fig. 9 A schematic structural diagram of an optical imaging lens according to Embodiment 5 of the present application is shown;

[0030] 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;

[0031] Fig.11 A schematic structural diagram of an optical imaging lens according to Embodiment 6 of the present application is shown;

[0032] 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;

[0033] Fig.13 A schematic structural diagram of an optical imaging lens according to Embodiment 7 of the present application is shown;

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

[0035] Fig.15 A schematic structural diagram of an optical imaging lens according to Embodiment 8 of the present application is shown;

[0036] FIG. 16A to FIG. 16D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 8 are respectively shown. DETAILED DESCRIPTION

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] The features, principles and other aspects of the present application are described in detail below.

[0045] The optical imaging lens according to the exemplary embodiment of the present application may include six lenses with optical power, namely, a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens. The six lenses are arranged in sequence from the object side to the image side along the optical axis. In the first lens to the sixth lens, each adjacent two lenses may have an air gap between them.

[0046] In an exemplary embodiment, the first lens may have positive power; the second lens may have positive power or negative power; the third lens may have positive power or negative power; the fourth lens may have negative power, the object side surface may be concave, and the image side surface may be convex; the fifth lens may have positive power; and the sixth lens may have negative power, and the object side surface may be convex. Reasonable matching of the power and surface shape of each lens in the optical system ensures the rationality of the optical imaging lens structure, so that the camera module can achieve ultra-clear photography function, and can better correct the primary aberration of the optical imaging lens, reducing the tolerance sensitivity of the optical system.

[0047] In example embodiments, the object-side surface of the first lens may be a convex surface, and the image-side surface may be a concave surface.

[0048] In example embodiments, the image-side surface of the second lens may be a concave surface.

[0049] In example embodiments, the object-side surface of the fifth lens may be a convex surface.

[0050] In example embodiments, the image-side surface of the sixth lens may be a concave surface.

[0051] In an exemplary embodiment, the distance TTL from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis and half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens ImgH may satisfy: 4.0mm<ImgH / (TTL / ImgH)<7.0mm. For example, 4.0mm<ImgH / (TTL / ImgH)<5.0mm. Reasonable control of the relationship between the distance from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis and half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens can ensure that the optical imaging lens has the characteristics of ultra-large image surface and ultra-thinness.

[0052] In an exemplary embodiment, the distance TTL from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis and half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens ImgH may satisfy: TTL / ImgH<1.3. For example, 1.2<TTL / ImgH<1.3. By controlling the ratio of the distance from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis to half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens within a reasonable numerical range, it is possible to ensure that the imaging lens has the performance of an ultra-large image surface while shortening the total length of its optical system, thereby achieving an ultra-large image surface and an ultra-thin structure of the optical imaging lens.

[0053] In an exemplary embodiment, the total effective focal length f of the optical imaging lens and the maximum half field angle Semi-FOV of the optical imaging lens may satisfy: 5.0mm<f×tan(Semi-FOV)<7.0mm. For example, 5.0mm<f×tan(Semi-FOV)<6.0mm. Reasonable control of the relationship between the total effective focal length of the optical imaging lens and the maximum half field angle of the optical imaging lens can ensure that the optical system has a structure with an ultra-large image plane, which helps to realize the ultra-clear shooting function of the optical imaging lens.

[0054] In an exemplary embodiment, the effective focal length f1 of the first lens and the effective focal length f5 of the fifth lens may satisfy: 0.7<f1 / f5<1.2. By controlling the ratio of the effective focal length of the first lens to the effective focal length of the fifth lens within a reasonable numerical range, it is beneficial to achieve a reasonable configuration of the optical power of the first lens and the fifth lens, and reduce the aberration of the optical imaging lens.

[0055] In an exemplary embodiment, the effective focal length f4 of the fourth lens, the effective focal length f6 of the sixth lens, and the total effective focal length f of the optical imaging lens may satisfy: 0.6<(f6-f4) / f<2.0. For example, 0.6<(f6-f4) / f<1.7. Reasonable control of the relationship between the effective focal length of the fourth lens, the effective focal length of the sixth lens, and the total effective focal length of the optical imaging lens is conducive to the reasonable distribution of the optical power of the fourth lens and the sixth lens in space, and reduces the aberration of the optical imaging lens.

[0056] In an exemplary embodiment, 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 may satisfy: 0.1<R7 / R8<0.7. For example, 0.4<R7 / R8<0.7. By controlling the ratio of the curvature radius of the object-side surface to the image-side surface of the fourth lens within a reasonable numerical range, it is helpful to reasonably adjust the contribution of the fourth lens to the aberration of the optical imaging lens.

[0057] In an exemplary embodiment, the center thickness CT5 of the fifth lens on the optical axis, the center thickness CT6 of the sixth lens on the optical axis, and the air interval T56 between the fifth lens and the sixth lens on the optical axis may satisfy: 0.7<(CT5+CT6) / T56<1.5. Reasonable control of the relationship between the center thickness of the fifth lens and the sixth lens on the optical axis and the air interval between the fifth lens and the sixth lens on the optical axis is conducive to avoiding the influence of excessive thickness of the lens on its spatial distribution in the system, and facilitating the assembly of the optical imaging lens.

[0058] In an exemplary embodiment, the effective focal length f3 of the third lens and the curvature radius R6 of the image side surface of the third lens may satisfy: -2.7<f3 / R6<-1.6. By controlling the ratio of the effective focal length of the third lens to the curvature radius of the image side surface of the third lens within a reasonable numerical range, it is beneficial to the processing and molding of the third lens. Optionally, the third lens may have positive optical power, and its image side surface may be convex.

[0059] In an exemplary embodiment, the maximum effective radius DT11 of the object side surface of the first lens, the maximum effective radius DT12 of the image side surface of the first lens, and the maximum effective radius DT62 of the image side surface of the sixth lens may satisfy: 1.3<DT62 / (DT11+DT12)<1.7. Reasonable control of the relationship between the maximum effective radius of the object side surface and the image side surface of the first lens and the maximum effective radius of the image side surface of the sixth lens can avoid the influence of the excessive effective radius of the lens on the spatial distribution of the lens, and facilitate the assembly of the optical imaging lens.

[0060] In an exemplary embodiment, the center thickness CT5 of the fifth lens on the optical axis and the edge thickness ET5 of the fifth lens may satisfy: 1.6<CT5 / ET5<2.4. By controlling the ratio of the center thickness to the edge thickness of the fifth lens on the optical axis within a reasonable numerical range, the processing and molding of the fifth lens is facilitated.

[0061] In an exemplary embodiment, the on-axis distance SAG41 from the intersection of the object side surface of the fourth lens and the optical axis to the effective radius vertex of the object side surface of the fourth lens, the on-axis distance SAG42 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, the on-axis distance SAG51 from the intersection of the object side surface of the fifth lens and the optical axis to the effective radius vertex of the object side surface of the fifth lens, and the on-axis distance SAG52 from the intersection of the image side surface of the fifth lens and the optical axis to the effective radius vertex of the image side surface of the fifth lens may satisfy: 0.5<(SAG41+SAG42) / (SAG51+SAG52)<0.9. Reasonable control of the relationship between the sagitta of the object side surface and the image side surface of the fourth lens and the sagitta of the object side surface and the image side surface of the fifth lens is conducive to limiting the degree of curvature of the fourth lens and the fifth lens, and reducing the difficulty of processing and molding the fourth lens and the fifth lens.

[0062] In an exemplary embodiment, the on-axis distance SAG32 from the intersection of the image side surface of the third lens and the optical axis to the vertex of the effective radius of the image side surface of the third lens and the on-axis distance SAG62 from the intersection of the image side surface of the sixth lens and the optical axis to the vertex of the effective radius of the image side surface of the sixth lens can satisfy: 1.5<SAG62 / SAG32<3.4. By controlling the ratio of the sagittal height of the image side surface of the sixth lens to the image side surface of the third lens within a reasonable numerical range, it is helpful to limit the curvature of the third lens and the sixth lens, and reduce the difficulty of processing and molding the third lens and the sixth lens.

[0063] In an exemplary embodiment, the combined focal length f123 of the first lens, the second lens, and the third lens and the total effective focal length f of the optical imaging lens may satisfy: 0.7<f123 / f<1.0. Reasonable control of the proportional relationship between the combined focal length of the first lens, the second lens, and the third lens and the total effective focal length of the optical imaging lens is conducive to reasonably allocating the distribution of the optical power of the first lens, the second lens, and the third lens in the system space, and is conducive to reducing the aberration of the optical imaging lens.

[0064] In an exemplary embodiment, the optical imaging lens may further include an aperture. The aperture may be disposed at an appropriate position as required. For example, the aperture may be disposed between the object side and the first 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.

[0065] The present application proposes an optical imaging lens with characteristics such as ultra-large image surface and ultra-thinness. The optical imaging lens according to the above-mentioned embodiment of the present application can use multiple lenses, such as the six lenses mentioned above. By reasonably allocating the focal length, surface shape, center thickness of each lens, and axial spacing between each lens, 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.

[0066] In an exemplary embodiment, 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 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 having 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.

[0067] 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.

[0068] 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.

[0069] Specific embodiments of the optical imaging lens applicable to the above-mentioned embodiments are further described below with reference to the accompanying drawings.

[0070] Example 1

[0071] The following reference Figures 1 to 2D An optical imaging lens according to Embodiment 1 of the present application is described. Figure 1 is a schematic diagram showing the structure of an optical imaging lens according to Example 1 of the present application.

[0072] like Figure 1 As shown, the optical imaging lens includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7 and an imaging surface S15.

[0073] 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 convex, and its image side surface S4 is concave. The third lens E3 has positive focal power, and its object side surface S5 is concave, and its image side surface S6 is convex. The fourth lens E4 has negative focal power, and its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has positive focal power, and its object side surface S9 is convex, and its image side surface S10 is concave. 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.

[0074] Table 1 shows the basic parameters of the optical imaging lens of Example 1, wherein the units of the radius of curvature, thickness and focal length are all millimeters (mm).

[0075]

[0076] Table 1

[0077] In this embodiment, the total effective focal length of the optical imaging lens is f=5.55 mm, the distance TTL from the object-side surface S1 of the first lens E1 to the imaging surface S15 on the optical axis is TTL=6.52 mm, and half of the diagonal length of the effective pixel area on the imaging surface S15 is ImgH=5.29 mm.

[0078] 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:

[0079]

[0080] 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, 10 , A 12 , A 14 , A 16 , A 18 and A 20 .

[0081] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 5.7683E-03 -3.6755E-02 2.1360E-01 -7.5613E-01 1.7743E+00 -2.8487E+00 3.1730E+00 -2.4469E+00 1.2798E+00 S2 -2.7663E-02 2.0779E-02 -7.0017E-02 2.1817E-01 -4.1664E-01 4.6512E-01 -2.5122E-01 -3.4188E-02 1.4517E-01 S3 -4.4408E-02 -2.6205E-02 3.8534E-01 -1.5779E+00 4.1503E+00 -7.3563E+00 8.9345E+00 -7.4473E+00 4.1884E+00 S4 -3.3917E-02 8.7111E-02 -3.2831E-01 1.1062E+00 -2.2786E+00 2.7384E+00 -1.4673E+00 -6.3920E-01 1.6390E+00 S5 -4.2340E-02 -5.3996E-02 2.2875E-01 -8.3317E-01 2.1236E+00 -3.8546E+00 4.9461E+00 -4.4362E+00 2.7152E+00 S6 -3.1010E-02 -5.1976E-02 1.1522E-01 -2.0009E-01 2.0173E-01 -3.9252E-02 -1.8634E-01 2.7537E-01 -1.9277E-01 S7 1.5746E-02 -7.9373E-02 7.9983E-03 4.5250E-01 -1.2119E+00 1.7583E+00 -1.6383E+00 1.0190E+00 -4.2133E-01 S8 -1.1024E-02 -1.3189E-01 2.6536E-01 -3.0773E-01 2.5924E-01 -1.6011E-01 7.1408E-02 -2.2595E-02 4.9338E-03 S9 -6.9883E-03 -1.0888E-01 1.4524E-01 -1.2404E-01 7.3948E-02 -3.1171E-02 9.2829E-03 -1.9366E-03 2.7617E-04 S10 3.3717E-02 -7.3109E-02 5.6026E-02 -2.9014E-02 1.0147E-02 -2.1845E-03 2.1581E-04 1.4887E-05 -7.2165E-06 S11 -1.3521E-01 -2.4065E-03 2.5997E-02 -1.3223E-02 3.8425E-03 -7.3819E-04 9.7400E-05 -8.8876E-06 5.5224E-07 S12 -1.5450E-01 4.7899E-02 -1.1729E-02 2.3092E-03 -3.4491E-04 3.5095E-05 -2.0268E-06 1.8741E-08 6.1275E-09

[0082] Table 2

[0083] 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.

[0084] Example 2

[0085] The following reference Figures 3 to 4D An optical imaging lens according to Embodiment 2 of the present application is described. Figure 3 A schematic structural diagram of an optical imaging lens according to Embodiment 2 of the present application is shown.

[0086] like Figure 3 As shown, the optical imaging lens includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7 and an imaging surface S15.

[0087] 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 positive focal power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has positive focal power, and its object side surface S5 is concave, and its image side surface S6 is convex. The fourth lens E4 has negative focal power, and its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has positive focal power, and its object side surface S9 is convex, and its image side surface S10 is concave. 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.

[0088] In this embodiment, the total effective focal length of the optical imaging lens is f=5.55 mm, the distance TTL from the object-side surface S1 of the first lens E1 to the imaging surface S15 on the optical axis is TTL=6.52 mm, and half of the diagonal length of the effective pixel area on the imaging surface S15 is ImgH=5.16 mm.

[0089] Table 3 shows the basic parameters of the optical imaging lens of Example 2, wherein the units of the radius of curvature, thickness and focal length are all millimeters (mm).

[0090]

[0091] Table 3

[0092] In Example 2, the object side surface and the image side surface of any lens from the first lens E1 to the sixth lens E6 are both aspherical surfaces. Table 4 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, 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, 10 , A 12 , A 14 , A 16 , A 18 and A 20 .

[0093] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -1.0448E-03 3.6215E-02 -1.5664E-01 4.0621E-01 -5.9584E-01 3.9928E-01 1.3666E-01 -5.1385E-01 4.5967E-01 S2 -1.4836E-01 3.1241E-01 -1.3273E+00 5.0094E+00 -1.2607E+01 2.1283E+01 -2.4575E+01 1.9462E+01 -1.0389E+01 S3 -1.4046E-01 1.6132E-01 -5.2969E-01 2.3159E+00 -6.5620E+00 1.2146E+01 -1.5216E+01 1.3016E+01 -7.4844E+00 S4 -1.6210E-02 -1.2326E-01 9.4588E-01 -4.0752E+00 1.1938E+01 -2.4270E+01 3.4467E+01 -3.4034E+01 2.2878E+01 S5 -2.8394E-02 2.8832E-02 -3.5350E-01 1.6149E+00 -4.6726E+00 8.9945E+00 -1.1842E+01 1.0687E+01 -6.4801E+00 S6 -3.2585E-02 -5.2959E-02 1.0238E-01 -1.1330E-01 8.1008E-02 -4.7994E-02 6.5691E-03 2.1342E-02 -1.3723E-02 S7 -5.9476E-02 -8.6059E-02 4.7165E-01 -1.1464E+00 2.0449E+00 -2.6450E+00 2.3834E+00 -1.4653E+00 6.0258E-01 S8 -8.7656E-02 6.1877E-03 1.1395E-01 -1.8101E-01 1.8281E-01 -1.3721E-01 7.6791E-02 -3.0849E-02 8.4744E-03 S9 -3.7819E-02 -4.5545E-02 6.6165E-02 -5.6727E-02 3.3657E-02 -1.4181E-02 4.2296E-03 -8.8416E-04 1.2651E-04 S10 2.0938E-02 -6.4296E-02 5.8381E-02 -3.8016E-02 1.8028E-02 -6.0756E-03 1.4271E-03 -2.2985E-04 2.4785E-05 S11 -1.9941E-01 5.9387E-02 -1.0307E-02 9.2888E-04 1.9216E-04 -1.0289E-04 2.1630E-05 -2.6931E-06 2.1204E-07 S12 -2.1190E-01 9.6808E-02 -3.8422E-02 1.2184E-02 -2.8861E-03 4.9823E-04 -6.2074E-05 5.5077E-06 -3.3895E-07

[0094] Table 4

[0095] 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. 4A to 4D It can be seen that the optical imaging lens provided in Example 2 can achieve good imaging quality.

[0096] Example 3

[0097] 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.

[0098] like Figure 5 As shown, the optical imaging lens includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7 and an imaging surface S15.

[0099] 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 concave, and its image side surface S6 is convex. The fourth lens E4 has negative focal power, and its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has positive focal power, and its object side surface S9 is convex, and its image side surface S10 is concave. 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.

[0100] In this embodiment, the total effective focal length of the optical imaging lens is f=5.58 mm, the distance TTL from the object-side surface S1 of the first lens E1 to the imaging surface S15 on the optical axis is TTL=6.52 mm, and half of the diagonal length of the effective pixel area on the imaging surface S15 is ImgH=5.24 mm.

[0101] Table 5 shows the basic parameters of the optical imaging lens of Example 3, wherein the units of the radius of curvature, thickness and focal length are all millimeters (mm).

[0102]

[0103] Table 5

[0104] In Example 3, the object side surface and the image side surface of any lens from the first lens E1 to the sixth lens E6 are both aspherical surfaces. Table 6 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, 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, 10 , A 12 , A 14 , A 16 , A 18 and A 20 .

[0105] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -1.4428E-03 3.9129E-02 -2.0207E-01 6.7827E-01 -1.4961E+00 2.2332E+00 -2.2884E+00 1.6092E+00 -7.6260E-01 S2 -1.7562E-02 2.0713E-02 -1.0328E-01 4.0003E-01 -9.9126E-01 1.6284E+00 -1.8209E+00 1.3932E+00 -7.1819E-01 S3 -3.4207E-02 5.8365E-02 -1.7948E-01 6.4325E-01 -1.5328E+00 2.4411E+00 -2.6755E+00 2.0399E+00 -1.0694E+00 S4 -1.6417E-02 -1.9992E-03 2.5825E-01 -1.2777E+00 3.9649E+00 -8.2426E+00 1.1697E+01 -1.1339E+01 7.3698E+00 S5 -6.5129E-02 1.2462E-01 -9.3109E-01 3.9893E+00 -1.1390E+01 2.2318E+01 -3.0498E+01 2.8997E+01 -1.8746E+01 S6 -5.4502E-02 2.9209E-02 -2.1571E-01 8.0783E-01 -1.9387E+00 3.1017E+00 -3.3872E+00 2.5350E+00 -1.2786E+00 S7 -8.5395E-02 2.3370E-02 5.8308E-02 -9.5985E-02 8.6759E-02 -5.3696E-02 2.6496E-02 -1.2015E-02 4.8603E-03 S8 -9.9299E-02 1.7290E-02 9.1475E-02 -1.6356E-01 1.7425E-01 -1.2769E-01 6.5684E-02 -2.3521E-02 5.6775E-03 S9 -3.2050E-02 -3.9720E-02 5.6817E-02 -4.8904E-02 2.9190E-02 -1.2317E-02 3.6600E-03 -7.5777E-04 1.0663E-04 S10 1.8440E-02 -5.2971E-02 4.4031E-02 -2.6624E-02 1.1788E-02 -3.7074E-03 8.1164E-04 -1.2158E-04 1.2154E-05 S11 -1.7925E-01 4.2621E-02 -4.1765E-03 -1.2605E-04 1.3270E-04 -3.0109E-05 4.2849E-06 -4.1005E-07 2.6200E-08 S12 -1.9055E-01 7.6428E-02 -2.6132E-02 7.0491E-03 -1.4063E-03 2.0238E-04 -2.0820E-05 1.5124E-06 -7.5614E-08

[0106] Table 6

[0107] 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.6DThe 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.

[0108] Example 4

[0109] 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.

[0110] like Figure 7 As shown, the optical imaging lens includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7 and an imaging surface S15.

[0111] 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 convex, 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 convex. The fourth lens E4 has negative focal power, and its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has positive focal power, and its object side surface S9 is convex, and its image side surface S10 is concave. 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.

[0112] In this embodiment, the total effective focal length of the optical imaging lens is f=5.57 mm, the distance TTL from the object-side surface S1 of the first lens E1 to the imaging surface S15 on the optical axis is TTL=6.52 mm, and half of the diagonal length of the effective pixel area on the imaging surface S15 is ImgH=5.20 mm.

[0113] Table 7 shows the basic parameters of the optical imaging lens of Example 4, wherein the units of the radius of curvature, thickness and focal length are all millimeters (mm).

[0114]

[0115]

[0116] Table 7

[0117] In Example 4, the object side surface and the image side surface of any lens from the first lens E1 to the sixth lens E6 are both aspherical surfaces. Table 8 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, 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 .

[0118] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -2.0313E-03 3.7389E-02 -1.8768E-01 5.9999E-01 -1.2469E+00 1.7301E+00 -1.6217E+00 1.0223E+00 -4.2295E-01 S2 -2.4398E-02 4.2112E-02 -2.0503E-01 7.3734E-01 -1.7201E+00 2.6775E+00 -2.8360E+00 2.0460E+00 -9.8686E-01 S3 -4.9238E-02 7.3589E-02 -2.7720E-01 1.1198E+00 -2.9523E+00 5.1736E+00 -6.1794E+00 5.0595E+00 -2.7961E+00 S4 -2.5784E-02 2.7626E-03 2.4184E-01 -1.2665E+00 4.2121E+00 -9.3784E+00 1.4205E+01 -1.4664E+01 1.0152E+01 S5 -5.1806E-02 1.2522E-01 -9.3158E-01 3.8488E+00 -1.0539E+01 1.9734E+01 -2.5723E+01 2.3334E+01 -1.4450E+01 S6 -3.8019E-02 -9.6491E-04 -1.0701E-01 3.9915E-01 -8.9833E-01 1.3255E+00 -1.3390E+00 9.3811E-01 -4.4870E-01 S7 -2.4002E-02 -4.7756E-02 2.0675E-01 -4.4784E-01 6.9761E-01 -7.9583E-01 6.5336E-01 -3.7465E-01 1.4506E-01 S8 -5.5935E-02 -5.6549E-03 7.4236E-02 -9.9100E-02 8.2311E-02 -4.7888E-02 2.0305E-02 -6.2767E-03 1.3676E-03 S9 -4.0878E-02 -3.2406E-02 5.2151E-02 -4.9379E-02 3.2740E-02 -1.5557E-02 5.2477E-03 -1.2375E-03 1.9841E-04 S10 1.0147E-02 -4.3333E-02 3.5785E-02 -2.1734E-02 9.7893E-03 -3.1650E-03 7.1484E-04 -1.1002E-04 1.1191E-05 S11 -1.8882E-01 5.0804E-02 -9.0593E-03 1.8410E-03 -3.9184E-04 6.4481E-05 -7.4674E-06 5.9940E-07 -3.2753E-08 S12 -1.9793E-01 8.3245E-02 -3.0306E-02 8.6910E-03 -1.8373E-03 2.8024E-04 -3.0623E-05 2.3692E-06 -1.2648E-07

[0119] Table 8

[0120] 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 8B The 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.

[0121] Example 5

[0122] 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.

[0123] like Fig. 9 As shown, the optical imaging lens includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7 and an imaging surface S15.

[0124] 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 convex, and its image side surface S4 is concave. The third lens E3 has positive focal power, and its object side surface S5 is concave, and its image side surface S6 is convex. The fourth lens E4 has negative focal power, and its object side surface S7 is concave, and its image side surface S8 is convex. 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.

[0125] In this embodiment, the total effective focal length of the optical imaging lens is f=5.49 mm, the distance TTL from the object-side surface S1 of the first lens E1 to the imaging surface S15 on the optical axis is TTL=6.52 mm, and half of the diagonal length of the effective pixel area on the imaging surface S15 is ImgH=5.22 mm.

[0126] Table 9 shows the basic parameters of the optical imaging lens of Example 5, wherein the units of the radius of curvature, thickness and focal length are all millimeters (mm).

[0127]

[0128] Table 9

[0129] In Example 5, the object side surface and the image side surface of any one of the first lens E1 to the sixth lens E6 are aspherical surfaces. Table 10 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, 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, 10 , A 12 , A 14 , A 16 , A 18 and A 20 .

[0130]

[0131]

[0132] Table 10

[0133] 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. 10CThe 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.

[0134] Example 6

[0135] The following reference Figures 11 to 12D An optical imaging lens according to Example 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.

[0136] like Fig.11 As shown, the optical imaging lens includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7 and an imaging surface S15.

[0137] 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 positive focal power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has positive focal power, and its object side surface S5 is concave, and its image side surface S6 is convex. The fourth lens E4 has negative focal power, and its object side surface S7 is concave, and its image side surface S8 is convex. 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.

[0138] In this embodiment, the total effective focal length of the optical imaging lens is f=5.47 mm, the distance TTL from the object-side surface S1 of the first lens E1 to the imaging surface S15 on the optical axis is TTL=6.52 mm, and half of the diagonal length of the effective pixel area on the imaging surface S15 is ImgH=5.13 mm.

[0139] Table 11 shows the basic parameters of the optical imaging lens of Example 6, wherein the units of the radius of curvature, thickness and focal length are all millimeters (mm).

[0140]

[0141]

[0142] Table 11

[0143] In Example 6, the object side surface and the image side surface of any lens from the first lens E1 to the sixth lens E6 are both aspherical surfaces. Table 12 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, 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 10 , A 12 , A 14 , A 16 , A 18 and A 20 .

[0144] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -4.2513E-03 7.0559E-02 -3.6023E-01 1.1842E+00 -2.5676E+00 3.7876E+00 -3.8540E+00 2.7014E+00 -1.2790E+00 S2 -1.8105E-01 3.8596E-01 -1.5339E+00 6.1088E+00 -1.6851E+01 3.1464E+01 -4.0299E+01 3.5445E+01 -2.1029E+01 S3 -1.7421E-01 3.2445E-01 -1.3748E+00 6.0196E+00 -1.7757E+01 3.5075E+01 -4.7356E+01 4.3851E+01 -2.7375E+01 S4 -9.8933E-03 -2.1318E-01 1.8214E+00 -8.8537E+00 2.8410E+01 -6.2086E+01 9.3631E+01 -9.7332E+01 6.8428E+01 S5 -3.2459E-02 5.1324E-02 -4.9510E-01 2.2254E+00 -6.5082E+00 1.2828E+01 -1.7433E+01 1.6370E+01 -1.0441E+01 S6 -1.1209E-02 -1.8981E-02 -1.9319E-01 8.3615E-01 -1.9039E+00 2.8228E+00 -2.9124E+00 2.1117E+00 -1.0509E+00 S7 1.5591E-02 -9.4749E-02 1.7066E-01 -2.3806E-01 4.2008E-01 -6.8608E-01 7.5570E-01 -5.3054E-01 2.3705E-01 S8 -1.7814E-02 -5.9072E-02 1.2294E-01 -1.2507E-01 8.9818E-02 -5.0858E-02 2.3675E-02 -8.6798E-03 2.3033E-03 S9 -1.3798E-03 -5.7989E-02 6.4083E-02 -4.9467E-02 2.7658E-02 -1.1241E-02 3.2710E-03 -6.7046E-04 9.4333E-05 S10 3.6450E-02 -4.6867E-02 3.0730E-02 -1.5998E-02 6.3702E-03 -1.8336E-03 3.5494E-04 -4.2211E-05 2.5342E-06 S11 -1.8248E-01 5.8332E-02 -1.2604E-02 1.8361E-03 -7.2528E-05 -3.1142E-05 7.2505E-06 -7.9574E-07 5.1977E-08 S12 -1.9537E-01 8.6247E-02 -3.2331E-02 9.3237E-03 -1.9776E-03 3.0305E-04 -3.3127E-05 2.5362E-06 -1.3190E-07

[0145] Table 12

[0146] 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.

[0147] Example 7

[0148] The following reference Figures 13 to 14D An optical imaging lens according to Embodiment 7 of the present application is described. Fig.13 A schematic structural diagram of an optical imaging lens according to Example 7 of the present application is shown.

[0149] like Fig.13 As shown, the optical imaging lens includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7 and an imaging surface S15.

[0150] 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 concave, and its image side surface S6 is convex. The fourth lens E4 has negative focal power, and its object side surface S7 is concave, and its image side surface S8 is convex. 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.

[0151] In this embodiment, the total effective focal length of the optical imaging lens is f=5.49 mm, the distance TTL from the object-side surface S1 of the first lens E1 to the imaging surface S15 on the optical axis is TTL=6.52 mm, and half of the diagonal length of the effective pixel area on the imaging surface S15 is ImgH=5.25 mm.

[0152] Table 13 shows the basic parameters of the optical imaging lens of Example 7, wherein the units of the radius of curvature, thickness and focal length are all millimeters (mm).

[0153]

[0154] Table 13

[0155] In Example 7, the object side surface and the image side surface of any one of the first lens E1 to the sixth lens E6 are aspherical surfaces. Table 14 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, 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 .

[0156] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 2.3577E-03 1.9931E-03 7.1262E-04 -1.1819E-02 4.4994E-02 -1.0297E-01 1.5458E-01 -1.5372E-01 9.9520E-02 S2 -1.5919E-02 2.3500E-03 -2.6628E-03 7.4117E-02 -3.2674E-01 7.4513E-01 -1.0531E+00 9.6846E-01 -5.8119E-01 S3 -2.9005E-02 3.1834E-02 -3.5639E-02 1.7866E-01 -6.1583E-01 1.3289E+00 -1.9164E+00 1.8857E+00 -1.2501E+00 S4 -1.7302E-02 5.1442E-02 -1.2486E-01 3.3273E-01 -4.1320E-01 -2.4097E-01 1.6815E+00 -2.7464E+00 2.4116E+00 S5 -5.9326E-02 8.3676E-02 -6.8280E-01 2.9964E+00 -8.7497E+00 1.7545E+01 -2.4616E+01 2.4155E+01 -1.6249E+01 S6 -3.7530E-02 1.2414E-03 -1.3371E-01 5.7648E-01 -1.4262E+00 2.2675E+00 -2.4207E+00 1.7560E+00 -8.5443E-01 S7 2.1649E-02 -8.0086E-02 1.3912E-01 -1.0669E-01 1.6834E-02 4.3234E-02 -4.2957E-02 1.9855E-02 -5.0919E-03 S8 -1.0675E-02 -9.2750E-02 1.9195E-01 -2.0550E-01 1.4989E-01 -7.9272E-02 3.1045E-02 -8.9365E-03 1.8264E-03 S9 -1.5580E-02 -6.6997E-02 8.2896E-02 -6.3379E-02 3.3776E-02 -1.2972E-02 3.5960E-03 -7.1075E-04 9.7310E-05 S10 3.3609E-02 -5.9981E-02 4.0295E-02 -1.7848E-02 5.1474E-03 -8.2353E-04 8.4434E-06 2.6544E-05 -5.8467E-06 S11 -1.7839E-01 3.9778E-02 -1.7093E-03 -1.1807E-03 4.0039E-04 -7.3691E-05 8.9997E-06 -7.5118E-07 4.2360E-08 S12 -1.9515E-01 7.7240E-02 -2.5145E-02 6.3090E-03 -1.1532E-03 1.4940E-04 -1.3485E-05 8.2640E-07 -3.2702E-08

[0157] Table 14

[0158] Fig.14A The axial chromatic aberration curve of the optical imaging lens of Example 7 is shown, which indicates the deviation of light of different wavelengths from the focal point behind the lens. Fig. 14B The astigmatism curve of the optical imaging lens of Example 7 is shown, which represents the meridional image curvature and the sagittal image curvature. Fig. 14C The distortion curve of the optical imaging lens of Example 7 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig.14DThe magnification chromatic aberration curve of the optical imaging lens of Example 7 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 14A to FIG. 14D It can be seen that the optical imaging lens provided in Example 7 can achieve good imaging quality.

[0159] Example 8

[0160] The following reference Figures 15 to 16D An optical imaging lens according to Example 8 of the present application is described. Fig.15 A schematic structural diagram of an optical imaging lens according to Example 8 of the present application is shown.

[0161] like Fig.15 As shown, the optical imaging lens includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7 and an imaging surface S15.

[0162] 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 convex, 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 convex. The fourth lens E4 has negative focal power, and its object side surface S7 is concave, and its image side surface S8 is convex. 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.

[0163] In this embodiment, the total effective focal length of the optical imaging lens is f=5.76 mm, the distance TTL from the object-side surface S1 of the first lens E1 to the imaging surface S15 on the optical axis is TTL=6.84 mm, and half of the diagonal length of the effective pixel area on the imaging surface S15 is ImgH=5.50 mm.

[0164] Table 15 shows a basic parameter table of the optical imaging lens of Example 8, wherein the units of the radius of curvature, thickness and focal length are all millimeters (mm).

[0165]

[0166] Table 15

[0167] In Example 8, the object side surface and the image side surface of any one of the first lens E1 to the sixth lens E6 are aspherical surfaces. Table 16 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, 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, 10 , A 12 , A 14 , A 16 , A 18 and A 20 .

[0168]

[0169]

[0170] Table 16

[0171] Fig.16A The axial chromatic aberration curve of the optical imaging lens of Example 8 is shown, which indicates the deviation of light of different wavelengths from the focal point behind the lens. Fig. 16B The astigmatism curve of the optical imaging lens of Example 8 is shown, which represents the meridional image curvature and the sagittal image curvature. Fig. 16C The distortion curve of the optical imaging lens of Example 8 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig.16D The magnification chromatic aberration curve of the optical imaging lens of Example 8 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 16A to FIG. 16D It can be seen that the optical imaging lens provided in Example 8 can achieve good imaging quality.

[0172] In summary, Examples 1 to 8 respectively satisfy the relationships shown in Table 17.

[0173] Conditional / Example 1 2 3 4 5 6 7 8 ImgH / (TTL / ImgH)(mm) 4.28 4.08 4.21 4.15 4.17 4.04 4.23 4.43 TTL / ImgH 1.23 1.26 1.24 1.25 1.25 1.27 1.24 1.24 f×tan(Semi-FOV)(mm) 5.20 5.05 5.13 5.12 5.12 5.01 5.14 5.40 f1 / f5 0.81 1.06 0.73 0.72 0.80 1.00 0.79 0.80 (f6-f4) / f 0.67 0.76 1.61 1.16 0.90 0.67 1.07 0.85 R7 / R8 0.57 0.50 0.59 0.55 0.62 0.51 0.64 0.60 (CT5+CT6) / T56 1.38 0.79 0.88 0.94 1.17 0.82 0.97 1.21 f3 / R6 -1.83 -2.68 -2.33 -1.61 -2.51 -2.48 -2.26 -1.65 DT62 / (DT11+DT12) 1.45 1.41 1.44 1.45 1.51 1.50 1.49 1.49 CT5 / ET5 1.86 1.93 1.68 1.93 2.14 2.13 2.35 1.98 (SAG41+SAG42) / (SAG51+SAG52) 0.88 0.71 0.78 0.55 0.86 0.69 0.81 0.71 SAG62 / SAG32 3.30 2.51 2.59 2.77 1.97 2.21 1.54 1.89 f123 / f 0.89 0.84 0.97 0.90 0.92 0.80 0.93 0.90

[0174] Table 17

[0175] 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, characterized in that: Along the optical axis from the object side to the image side, they include: The first lens has positive refractive power, and its object side surface is convex and its image side surface is concave; a second lens having optical power and having a concave image-side surface; A third lens element having positive refractive power and a convex image-side surface; a fourth lens element having negative optical power, whose object side surface is concave and image side surface is convex; a fifth lens element having positive refractive power and a convex object-side surface; and a sixth lens having negative optical power, whose object side surface is convex and whose image side surface is concave; Wherein, the number of lenses having optical power in the optical imaging lens is six; The distance TTL from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis and half the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens satisfy the following conditions: 4.04mm≤ImgH / (TTL / ImgH)≤4.43mm; The effective focal length f1 of the first lens and the effective focal length f5 of the fifth lens satisfy: 0.7<f1 / f5≤1.06; The effective focal length f4 of the fourth lens, the effective focal length f6 of the sixth lens and the total effective focal length f of the optical imaging lens satisfy: 0.67≤(f6-f4) / f≤1.

61.

2. The optical imaging lens according to claim 1, wherein: The distance TTL from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis and half the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens satisfy: 1.23≤TTL / ImgH<1.

3.

3. The optical imaging lens according to claim 1, wherein: The total effective focal length f of the optical imaging lens and the maximum half field of view Semi-FOV of the optical imaging lens satisfy: 5.0mm<f×tan(Semi-FOV)≤5.40mm.

4. The optical imaging lens according to claim 1, wherein: 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: 0.50≤R7 / R8≤0.

64.

5. The optical imaging lens according to claim 1, wherein: The center thickness CT5 of the fifth lens on the optical axis, the center thickness CT6 of the sixth lens on the optical axis, and the air interval T56 between the fifth lens and the sixth lens on the optical axis satisfy: 0.79≤(CT5+CT6) / T56≤1.

38.

6. The optical imaging lens according to claim 1, wherein: The effective focal length f3 of the third lens and the curvature radius R6 of the image side surface of the third lens satisfy: -2.7<f3 / R6<-1.

6.

7. The optical imaging lens according to claim 1, wherein: The maximum effective radius DT11 of the object side surface of the first lens, the maximum effective radius DT12 of the image side surface of the first lens, and the maximum effective radius DT62 of the image side surface of the sixth lens satisfy: 1.41≤DT62 / (DT11+DT12)≤1.

51.

8. The optical imaging lens according to claim 1, wherein: The center thickness CT5 of the fifth lens on the optical axis and the edge thickness ET5 of the fifth lens satisfy: 1.68≤CT5 / ET5<2.

4.

9. The optical imaging lens according to claim 1, wherein: 0.55≤(SAG41+SAG42) / (SAG51+SAG52)<0.9, Among them, SAG41 is the on-axis distance from the intersection of the object side surface of the fourth lens and the optical axis to the effective radius vertex of the object side surface of the fourth lens, SAG42 is the on-axis 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, SAG51 is the on-axis distance from the intersection of the object side surface of the fifth lens and the optical axis to the effective radius vertex of the object side surface of the fifth lens, and SAG52 is the on-axis distance from the intersection of the image side surface of the fifth lens and the optical axis to the effective radius vertex of the image side surface of the fifth lens.

10. The optical imaging lens according to claim 1, wherein: 1.5<SAG62 / SAG32≤3.30, Among them, SAG32 is the on-axis distance from the intersection of the image side surface of the third lens and the optical axis to the vertex of the effective radius of the image side surface of the third lens, and SAG62 is the on-axis distance from the intersection of the image side surface of the sixth lens and the optical axis to the vertex of the effective radius of the image side surface of the sixth lens.

11. The optical imaging lens according to claim 1, wherein: The combined focal length f123 of the first lens, the second lens and the third lens and the total effective focal length f of the optical imaging lens satisfy: 0.80≤f123 / f<1.0.

Images