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; a second lens with negative optical power; a third lens; a fourth lens with negative optical power; a fifth lens; and a sixth lens; wherein ImgH≥5mm; and TTL / ImgH≤1.28, wherein ImgH is half of the diagonal length of an effective pixel area on an imaging plane of the optical imaging lens, and TTL is the distance from the object side of the first lens to the imaging plane of the optical imaging lens on the optical axis.

Description

Technical Field

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

[0002] Smart devices, such as smartphones, usually have camera functions. In order to attract customers, mobile phone manufacturers are competing fiercely in terms of mobile phone camera performance. As a result, mobile phone manufacturers have more diverse requirements for optical imaging lenses. They must not only minimize the size, but also ensure high imaging effects, which brings huge challenges to lens manufacturers.

[0003] Camera modules are usually provided on portable devices such as mobile phones to enable the mobile phones to have camera functions. The camera module is usually provided with a charge-coupled device (CCD) type image sensor or a complementary metal oxide semiconductor (CMOS) type image sensor, and is provided with an optical imaging lens. The optical imaging lens can collect the light on the object side, and the imaging light travels along the optical path of the optical imaging lens and shines on the image sensor, and then the image sensor converts the optical signal into an electrical signal to form image data. With the rapid development of the semiconductor industry, the performance of image sensors has been rapidly improved, for example, the pixels are getting higher and higher. This further brings challenges to the design of optical imaging lenses.

[0004] In order to meet the needs of miniaturization and satisfy the imaging requirements, an optical imaging lens is needed that can take into account miniaturization, ultra-thinness, large image surface, and large aperture. Summary of the invention

[0005] The present application provides an optical imaging lens that is applicable to portable electronic products and can at least solve or partially solve at least one of the above-mentioned shortcomings in the prior art.

[0006] The present application provides an optical imaging lens, which includes, in order from the object side to the image side along the optical axis: a first lens; a second lens with negative optical power; a third lens; a fourth lens with negative optical power; a fifth lens; and a sixth lens; wherein ImgH≥5mm; and TTL / ImgH≤1.28, wherein ImgH is half of the diagonal length of an effective pixel area on an imaging plane of the optical imaging lens, and TTL is the distance from the object side of the first lens to the imaging plane of the optical imaging lens on the optical axis.

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

[0008] In one embodiment, the effective focal length f4 of the fourth lens and the total effective focal length f of the optical imaging lens may satisfy -3.5<f4 / f<-1.0.

[0009] In one embodiment, the effective focal length f1 of the first lens and half of the maximum field of view Semi-FOV of the optical imaging lens may satisfy 4mm<f1×tan(Semi-FOV)<6mm.

[0010] In one embodiment, a radius of curvature R2 of the image-side surface of the first lens and a combined focal length f12 of the first lens and the second lens may satisfy 0.5<R2 / f12<1.5.

[0011] In one embodiment, a center thickness CT3 of the third lens on the optical axis and a spacing distance T34 between the third lens and the fourth lens on the optical axis may satisfy 1.0<CT3 / T34<2.5.

[0012] In one embodiment, the effective focal length f5 of the fifth lens and the effective focal length f6 of the sixth lens may satisfy 0.5<|f5 / f6|<2.0.

[0013] In one embodiment, the effective focal length f1 of the first lens, the effective focal length f4 of the fourth lens, and the effective focal length f5 of the fifth lens may satisfy −2<(f4+f5) / f1<0.

[0014] In one embodiment, the on-axis distance SAG31 between the intersection of the object side surface of the third lens and the optical axis to the effective radius vertex of the object side surface of the third lens and the on-axis distance SAG32 between 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 may satisfy 2≤SAG32 / SAG31<4.

[0015] In one embodiment, an on-axis distance SAG41 between the intersection of the object side surface of the fourth lens and the optical axis to the effective radius vertex of the object side surface of the fourth lens, an on-axis distance SAG42 between 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, and a center thickness CT4 of the fourth lens on the optical axis may satisfy 0.5<|SAG41+SAG42| / CT4<2.5.

[0016] In one embodiment, an edge thickness ET2 of the second lens, an edge thickness ET3 of the third lens, and a separation distance T23 between the second lens and the third lens on the optical axis may satisfy 1.0<(ET2+ET3) / T23<2.5.

[0017] In one embodiment, the combined focal length f345 of the third lens, the fourth lens, and the fifth lens and the total effective focal length f of the optical imaging lens may satisfy 0.5<f345 / f<1.5.

[0018] In one embodiment, the object-side surface of the third lens may be a convex surface, and the image-side surface of the third lens may be a convex surface.

[0019] In one embodiment, the image-side surface of the fifth lens element may be a convex surface.

[0020] On the other hand, 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; a second lens with negative optical power; a third lens; a fourth lens with negative optical power; a fifth lens; and a sixth lens; wherein half of the diagonal length ImgH of an effective pixel area on an imaging plane of the optical imaging lens and a distance TTL from the object side of the first lens to the imaging plane of the optical imaging lens on the optical axis may satisfy TTL / ImgH≤1.30; and an effective focal length f1 of the first lens and half of the maximum field of view Semi-FOV of the optical imaging lens may satisfy 4mm<f1×tan(Semi-FOV)<6mm.

[0021] 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 -3.5<f4 / f<-1.0.

[0022] In one embodiment, half of the diagonal length ImgH of the effective pixel area on the imaging plane of the optical imaging lens may satisfy ImgH≥5mm.

[0023] In one embodiment, a radius of curvature R2 of the image-side surface of the first lens and a combined focal length f12 of the first lens and the second lens may satisfy 0.5<R2 / f12<1.5.

[0024] In one embodiment, a center thickness CT3 of the third lens on the optical axis and a spacing distance T34 between the third lens and the fourth lens on the optical axis may satisfy 1.0<CT3 / T34<2.5.

[0025] In one embodiment, the effective focal length f5 of the fifth lens and the effective focal length f6 of the sixth lens may satisfy 0.5<|f5 / f6|<2.0.

[0026] In one embodiment, the effective focal length f1 of the first lens, the effective focal length f4 of the fourth lens, and the effective focal length f5 of the fifth lens may satisfy −2<(f4+f5) / f1<0.

[0027] In one embodiment, the on-axis distance SAG31 between the intersection of the object side surface of the third lens and the optical axis to the effective radius vertex of the object side surface of the third lens and the on-axis distance SAG32 between 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 may satisfy 2≤SAG32 / SAG31<4.

[0028] In one embodiment, an on-axis distance SAG41 between the intersection of the object side surface of the fourth lens and the optical axis to the effective radius vertex of the object side surface of the fourth lens, an on-axis distance SAG42 between 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, and a center thickness CT4 of the fourth lens on the optical axis may satisfy 0.5<|SAG41+SAG42| / CT4<2.5.

[0029] In one embodiment, an edge thickness ET2 of the second lens, an edge thickness ET3 of the third lens, and a separation distance T23 between the second lens and the third lens on the optical axis may satisfy 1.0<(ET2+ET3) / T23<2.5.

[0030] In one embodiment, the combined focal length f345 of the third lens, the fourth lens, and the fifth lens and the total effective focal length f of the optical imaging lens may satisfy 0.5<f345 / f<1.5.

[0031] In one embodiment, the object-side surface of the third lens may be a convex surface, and the image-side surface of the third lens may be a convex surface.

[0032] In one embodiment, the image-side surface of the fifth lens element may be a convex surface.

[0033] The present application adopts six 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 miniaturization, ultra-thinness, large image surface and large aperture. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] 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:

[0035] Figure 1 A schematic structural diagram of an optical imaging lens according to Embodiment 1 of the present application is shown; 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;

[0036] Figure 3 A schematic structural diagram of an optical imaging lens according to Embodiment 2 of the present application is shown; 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;

[0037] Figure 5 A schematic structural diagram of an optical imaging lens according to Embodiment 3 of the present application is shown; FIG. 6A to FIG. 6DThe axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 3 are respectively shown;

[0038] Figure 7 A schematic structural diagram of an optical imaging lens according to Embodiment 4 of the present application is shown; 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; 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;

[0040] Fig.11 A schematic structural diagram of an optical imaging lens according to Embodiment 6 of the present application is shown; 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;

[0041] Fig.13 A schematic structural diagram of an optical imaging lens according to Embodiment 7 of the present application is shown; 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. DETAILED DESCRIPTION

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] It should also be understood that the terms "comprises", "including", "having", "includes" and / or "comprising", when used in this specification, indicate the presence of the stated features, elements and / or components, but do not 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.

[0047] 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.

[0048] 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.

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

[0050] The optical imaging lens according to the exemplary embodiment of the present application may include, for example, 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. Among the first lens to the sixth lens, any two adjacent lenses may have an air gap between them.

[0051] In an exemplary embodiment, the first lens has positive or negative optical power; the second lens may have negative optical power; the third lens has positive or negative optical power; the fourth lens may have negative optical power; the fifth lens has positive or negative optical power; and the sixth lens has positive or negative optical power. By reasonably controlling the distribution of the optical power of each component of the lens, the imaging quality of the optical imaging lens can be improved.

[0052] In an exemplary embodiment, the object side surface of the third lens may be a convex surface. Exemplarily, the image side surface of the third lens is a convex surface. By controlling the two mirror surfaces of the third lens to be convex surfaces, the imaging light can be reasonably bent at the two mirror surfaces. Moreover, the two mirror surfaces of the third lens are both convex surfaces, which can contribute to smaller third-order aberrations and smaller higher-order aberrations, thereby improving the imaging quality of the optical imaging lens.

[0053] In an exemplary embodiment, the image side surface of the fifth lens may be a convex surface. Setting the image side surface of the fifth lens to be a convex surface can make the shape of the fifth lens reasonable, thereby allowing light to converge on the image plane and improve imaging performance under macro distance. At the same time, the lens has better processability, such as easy injection molding.

[0054] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula ImgH ≥ 5mm, where ImgH is half of the diagonal length of the effective pixel area on the imaging plane of the optical imaging lens. By controlling ImgH ≥ 5mm, it is helpful to make the optical imaging lens have the characteristics of a large image plane. More specifically, ImgH may satisfy ImgH ≥ 5.15mm.

[0055] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula TTL / ImgH≤1.30, wherein ImgH is half of the diagonal length of the effective pixel area on the imaging plane of the optical imaging lens, and TTL is the distance from the object side of the first lens to the imaging plane of the optical imaging lens on the optical axis. By constraining the ratio of the total optical length and the image height of the optical imaging lens to be within this range, the optical imaging lens can achieve ultra-thin characteristics. More specifically, ImgH and TTL may satisfy TTL / ImgH≤1.28.

[0056] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula -3.5<f4 / f<-1.0, wherein f4 is the effective focal length of the fourth lens, and f is the total effective focal length of the optical imaging lens. By controlling the ratio of the effective focal length of the fourth lens to the total effective focal length within this range, it is helpful to reasonably control the effective focal length of the fourth lens. The fourth lens can generate positive spherical aberration, and the positive spherical aberration can be balanced with the negative spherical aberration generated by other lenses, so that the imaging quality of the optical imaging lens in the on-axis field of view is good. More specifically, f4 and f can satisfy -3.25<f4 / f<-1.30.

[0057] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 4mm<f1×tan(Semi-FOV)<6mm, where f1 is the effective focal length of the first lens and Semi-FOV is half of the maximum field of view of the optical imaging lens. By controlling 4mm<f1×tan(Semi-FOV)<6mm, the optical imaging lens can achieve an imaging effect with a large image surface. More specifically, f1 and Semi-FOV may satisfy 4.00mm<f1×tan(Semi-FOV)<5.60mm.

[0058] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 0.5<R2 / f12<1.5, wherein R2 is the radius of curvature of the image side surface of the first lens, and f12 is the combined focal length of the first lens and the second lens. By controlling the ratio of the radius of curvature of the image side surface of the first lens to the combined focal length of the first lens and the second lens within this range, the deflection angle of the edge field of view at the first lens can be controlled, thereby effectively reducing the sensitivity of the optical imaging lens. More specifically, R2 and f12 may satisfy 0.8<R2 / f12<1.40.

[0059] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 1.0<CT3 / T34<2.5, where CT3 is the center thickness of the third lens on the optical axis, and T34 is the spacing distance between the third lens and the fourth lens on the optical axis. By reasonably adjusting the ratio of the center thickness of the third lens to the air gap between the third lens and the fourth lens, the risk of ghost images at the third lens and the fourth lens can be effectively reduced, and it will help to compress the size of the optical imaging lens. More specifically, CT3 and T34 may satisfy 1.15<CT3 / T34<2.25.

[0060] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 0.5<|f5 / f6|<2.0, where f5 is the effective focal length of the fifth lens and f6 is the effective focal length of the sixth lens. By reasonably combining the focal powers of the fifth lens and the sixth lens and adjusting the ratio of the two focal powers within a certain range, it is beneficial to balance the off-axis aberrations of the optical imaging lens. More specifically, f5 and f6 may satisfy 0.9<|f5 / f6|<1.9.

[0061] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula -2<(f4+f5) / f1<0, wherein f1 is the effective focal length of the first lens, f4 is the effective focal length of the fourth lens, and f5 is the effective focal length of the fifth lens. Satisfying -2<(f4+f5) / f1<0 is conducive to balancing the distortion produced by the fourth lens and the fifth lens, and balancing the third-order astigmatism produced by the two, thereby enabling the final distortion and astigmatism of the optical imaging lens to be controlled within a reasonable range to improve the imaging quality. More specifically, f1, f4, and f5 may satisfy -2.0<(f4+f5) / f1<-0.60.

[0062] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 2≤SAG32 / SAG31<4, wherein SAG31 is the on-axis distance between the intersection of the object side surface of the third lens and the optical axis to the effective radius vertex of the object side surface of the third lens, and SAG32 is the on-axis distance between 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. By reasonably controlling the ratio of the sagittal heights of the mirror surfaces on both sides of the third lens, it is beneficial to ensure the processing, molding and assembly of the third lens to obtain good imaging quality. An unreasonable ratio may lead to problems such as difficulty in debugging the molding surface and obvious deformation after assembly, thereby making it impossible to ensure the imaging quality. More specifically, SAG31 and SAG32 may satisfy 2.0≤SAG32 / SAG31<3.7.

[0063] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 0.5<|SAG41+SAG42| / CT4<2.5, wherein SAG41 is the on-axis distance between the intersection of the object side surface of the fourth lens and the optical axis to the vertex of the effective radius of the object side surface of the fourth lens, SAG42 is the on-axis distance between 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, and CT4 is the center thickness of the fourth lens on the optical axis. Satisfying 0.5<|SAG41+SAG42| / CT4<2.5 can effectively reduce the incident angle of the main light on the object side surface of the fourth lens. This can improve the matching degree between the optical imaging lens and the chip to be matched. More specifically, SAG41, SAG42 and CT4 can satisfy 0.8<|SAG41+SAG42| / CT4<2.4.

[0064] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 1.0<(ET2+ET3) / T23<2.5, wherein ET2 is the edge thickness of the second lens, ET3 is the edge thickness of the third lens, and T23 is the spacing distance between the second lens and the third lens on the optical axis. By controlling the ratio of the sum of the edge thickness of the second lens and the third lens to the air gap between the two within this range, it is helpful to make the lens have better processing performance and assembly performance. More specifically, ET2, ET3 and T23 may satisfy 1.30<(ET2+ET3) / T23<2.20.

[0065] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 0.5<f345 / f<1.5, wherein f345 is the combined focal length of the third lens, the fourth lens, and the fifth lens, and f is the total effective focal length of the optical imaging lens. By satisfying the conditional formula 0.5<f345 / f<1.5, it is helpful to control the combined focal length of the third lens, the fourth lens, and the fifth lens within a certain range, thereby being able to control the contribution of the aberrations of the three lenses, so that the aberrations of the optical imaging lens are at a reasonable level. More specifically, f345 and f may satisfy 0.70<f345 / f<1.25.

[0066] In an exemplary embodiment, the optical imaging lens may further include at least one aperture. The aperture may be disposed at an appropriate position as required, for example, 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.

[0067] The optical imaging lens according to the above-mentioned embodiment of the present application may 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 volume of the optical imaging lens can be effectively reduced, the structural length of the optical imaging lens can be reduced, the sensitivity of the imaging lens can be reduced, and the processability of the imaging lens can be improved, so that the optical imaging lens is more conducive to production and processing and can be applied to portable electronic products. At the same time, the optical imaging lens of the present application also has excellent optical properties such as large image surface, large aperture, weak ghost image intensity, and good imaging quality.

[0068] 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 object side surface of the first lens to the image side surface 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 surface and the image side surface of each lens in the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens is an aspherical mirror surface. Optionally, the object side surface and the image side surface of each lens in the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens are all aspherical mirror surfaces.

[0069] 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.

[0070] Specific embodiments of the optical imaging lens applicable to the above-mentioned embodiments are further described below with reference to the accompanying drawings.

[0071] Example 1

[0072] 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.

[0073] 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 and a filter E7.

[0074] 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 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 positive 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 optical imaging lens has an imaging surface S15, and the light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0075] 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).

[0076]

[0077]

[0078] Table 1

[0079] In Example 1, the total effective focal length f of the optical imaging lens is 5.51 mm, the aperture number Fno of the optical imaging lens is 1.97, the axial distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S15 is 6.52 mm, the half diagonal length of the effective pixel area on the imaging surface S15 ImgH is 5.16 mm, and the half maximum field of view angle Semi-FOV is 42.62°.

[0080] 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:

[0081]

[0082] 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 A20 .

[0083] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 1.1716E-04 -1.1959E-02 1.6138E-01 -8.9128E-01 2.8980E+00 -6.1966E+00 9.1799E+00 -9.6691E+00 7.3036E+00 S2 -4.4549E-02 4.0310E-02 -1.6844E-01 6.7217E-01 -1.6124E+00 2.1526E+00 -8.4571E-01 -2.2477E+00 4.6964E+00 S3 -5.1335E-02 7.5041E-02 -4.6163E-01 3.3624E+00 -1.5052E+01 4.4185E+01 -8.9063E+01 1.2627E+02 -1.2704E+02 S4 -1.8322E-02 1.2719E-02 5.6536E-01 -5.3966E+00 2.8894E+01 -9.9105E+01 2.3046E+02 -3.7423E+02 4.2933E+02 S5 -5.2993E-02 4.5473E-02 -2.2123E-01 4.9777E-01 9.6763E-02 -4.8134E+00 1.7119E+01 -3.3949E+01 4.3845E+01 S6 -4.8871E-02 -1.4918E-01 1.2527E+00 -5.7277E+00 1.7035E+01 -3.5141E+01 5.1693E+01 -5.4937E+01 4.2258E+01 S7 -1.2486E-01 -5.7079E-02 5.6405E-01 -1.4873E+00 2.2654E+00 -1.9719E+00 5.4839E-01 8.4839E-01 -1.2393E+00 S8 -1.5347E-01 -6.1380E-03 2.5541E-01 -5.6904E-01 7.9004E-01 -7.6913E-01 5.4118E-01 -2.7793E-01 1.0420E-01 S9 -4.0244E-02 -5.8629E-02 1.0569E-01 -1.1538E-01 9.3919E-02 -5.6703E-02 2.4906E-02 -7.9374E-03 1.8322E-03 S10 1.1691E-03 -2.9041E-02 4.1902E-02 -4.1892E-02 3.3609E-02 -1.8769E-02 7.0482E-03 -1.8095E-03 3.2299E-04 S11 -2.2124E-01 7.7702E-02 -6.3450E-04 -8.8371E-03 3.6896E-03 -8.4509E-04 1.2759E-04 -1.3394E-05 9.9033E-07 S12 -2.3497E-01 1.3692E-01 -6.4309E-02 2.3608E-02 -6.6003E-03 1.3839E-03 -2.1628E-04 2.5090E-05 -2.1436E-06

[0084] Table 2

[0085] Figure 2A The axial chromatic aberration curve of the optical imaging lens of Example 1 is shown, which indicates the deviation of the convergent focus of light of different wavelengths after passing through 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.

[0086] Example 2

[0087] 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.

[0088] 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 and a filter E7.

[0089] 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 convex. The fourth lens E4 has negative focal power, and its object side surface S7 is concave, 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 positive 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 optical imaging lens has an imaging surface S15, and the light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0090] In Example 2, the total effective focal length f of the optical imaging lens is 5.40 mm, the aperture number Fno of the optical imaging lens is 1.97, the axial distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S15 is 6.45 mm, the half diagonal length of the effective pixel area on the imaging surface S15 ImgH is 5.16 mm, and the half maximum field of view angle Semi-FOV is 40.8°.

[0091] 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.

[0092]

[0093] Table 3

[0094]

[0095]

[0096] Table 4

[0097] Figure 4A The axial chromatic aberration curve of the optical imaging lens of Example 2 is shown, which indicates the deviation of the convergent focus of light of different wavelengths after passing through 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.

[0098] Example 3

[0099] 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.

[0100] 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 and a filter E7.

[0101] 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 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 positive focal power, and its object side surface S11 is concave, and its image side surface S12 is concave. The filter E7 has an object side surface S13 and an image side surface S14. The optical imaging lens has an imaging surface S15, and the light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0102] In Example 3, the total effective focal length f of the optical imaging lens is 5.40 mm, the aperture number Fno of the optical imaging lens is 1.97, the axial distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S15 is 6.38 mm, the half diagonal length of the effective pixel area on the imaging surface S15 ImgH is 5.16 mm, and the half maximum field of view angle Semi-FOV is 41.01°.

[0103] 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.

[0104]

[0105]

[0106] Table 5

[0107] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 5.2414E-03 -5.5157E-02 4.8176E-01 -2.4542E+00 8.0839E+00 -1.8144E+01 2.8630E+01 -3.2294E+01 2.6152E+01 S2 -4.6468E-02 8.7449E-02 -6.6811E-01 3.7152E+00 -1.3494E+01 3.3600E+01 -5.9101E+01 7.4513E+01 -6.7514E+01 S3 -4.3478E-02 8.2316E-04 2.3361E-01 -1.0745E+00 3.5393E+00 -9.1423E+00 1.8708E+01 -2.9625E+01 3.5047E+01 S4 -1.5618E-02 9.4961E-02 -5.6511E-01 2.5189E+00 -6.2720E+00 6.0007E+00 1.2388E+01 -5.5252E+01 9.9760E+01 S5 -4.3443E-02 -7.2876E-03 -1.3985E-01 1.5891E+00 -9.9533E+00 3.8348E+01 -9.7852E+01 1.7153E+02 -2.0980E+02 S6 -5.9159E-02 3.9736E-02 4.9465E-02 -1.1174E+00 5.0521E+00 -1.3346E+01 2.3587E+01 -2.9186E+01 2.5664E+01 S7 -1.3698E-01 2.4819E-01 -6.9601E-01 1.8154E+00 -3.7577E+00 5.7793E+00 -6.4937E+00 5.3131E+00 -3.1489E+00 S8 -2.1999E-01 2.9695E-01 -5.4606E-01 9.0255E-01 -1.1507E+00 1.0779E+00 -7.3329E-01 3.6101E-01 -1.2764E-01 S9 -1.2271E-01 9.8124E-02 -1.2814E-01 1.4552E-01 -1.1790E-01 6.1743E-02 -1.8917E-02 2.0475E-03 7.7308E-04 S10 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S11 -1.5101E-01 4.2991E-02 2.6641E-02 -3.1949E-02 1.5330E-02 -4.4216E-03 8.4403E-04 -1.1104E-04 1.0237E-05 S12 -2.0237E-01 1.1694E-01 -5.1099E-02 1.6560E-02 -4.0111E-03 7.3087E-04 -1.0035E-04 1.0346E-05 -7.9294E-07

[0108] Table 6

[0109] Fig. 6A The axial chromatic aberration curve of the optical imaging lens of Example 3 is shown, which indicates the deviation of the convergent focus of light of different wavelengths after passing through 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.

[0110] Example 4

[0111] 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.

[0112] 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 and a filter E7.

[0113] 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 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 positive focal power, and its object side surface S11 is concave, and its image side surface S12 is concave. The filter E7 has an object side surface S13 and an image side surface S14. The optical imaging lens has an imaging surface S15, and the light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0114] In Example 4, the total effective focal length f of the optical imaging lens is 5.40 mm, the aperture number Fno of the optical imaging lens is 1.97, the axial distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S15 is 6.50 mm, the half diagonal length of the effective pixel area on the imaging surface S15 ImgH is 5.16 mm, and the half maximum field of view angle Semi-FOV is 42.62°.

[0115] 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.

[0116]

[0117] Table 7

[0118] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 3.4127E-03 -2.1854E-02 1.8233E-01 -9.1759E-01 3.0396E+00 -6.9220E+00 1.1125E+01 -1.2797E+01 1.0566E+01 S2 -3.9751E-02 2.0417E-02 4.7262E-02 -4.5425E-01 2.1701E+00 -6.5583E+00 1.3294E+01 -1.8698E+01 1.8521E+01 S3 -4.4713E-02 9.9945E-04 3.8021E-01 -2.3983E+00 9.8460E+00 -2.8011E+01 5.6528E+01 -8.1992E+01 8.5701E+01 S4 -1.3095E-02 9.4099E-02 -8.4283E-01 6.3737E+00 -3.1794E+01 1.0910E+02 -2.6492E+02 4.6197E+02 -5.8020E+02 S5 -4.3106E-02 -1.5799E-02 2.4512E-01 -1.9690E+00 9.0006E+00 -2.7328E+01 5.7833E+01 -8.7191E+01 9.4218E+01 S6 -6.8658E-02 7.3120E-02 -2.9866E-01 1.0078E+00 -2.7670E+00 5.7090E+00 -8.7060E+00 9.7690E+00 -8.0167E+00 S7 -1.4240E-01 1.5949E-01 -3.7223E-01 9.5198E-01 -1.9844E+00 3.0743E+00 -3.4925E+00 2.9107E+00 -1.7742E+00 S8 -1.6278E-01 1.4756E-01 -2.1319E-01 3.3074E-01 -4.1887E-01 3.9615E-01 -2.7382E-01 1.3739E-01 -4.9596E-02 S9 -6.5353E-02 2.3947E-02 -2.7641E-02 3.5445E-02 -3.1164E-02 1.8505E-02 -7.5857E-03 2.1347E-03 -4.0430E-04 S10 -4.0200E-03 2.7604E-03 -1.0986E-02 1.7456E-02 -1.4837E-02 8.3641E-03 -3.2894E-03 9.0938E-04 -1.7659E-04 S11 -1.7929E-01 7.4507E-02 -1.4801E-02 -1.7041E-04 1.0657E-03 -3.5252E-04 6.6630E-05 -8.4329E-06 7.4664E-07 S12 -1.9312E-01 1.0531E-01 -4.6354E-02 1.5727E-02 -4.0109E-03 7.6047E-04 -1.0692E-04 1.1126E-05 -8.5104E-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 the convergent focus of light of different wavelengths after passing through 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 and a filter E7.

[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 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 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 positive focal power, and its object side surface S11 is concave, and its image side surface S12 is concave. The filter E7 has an object side surface S13 and an image side surface S14. The optical imaging lens has an imaging surface S15, and 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 Example 5, the total effective focal length f of the optical imaging lens is 5.47 mm, the aperture number Fno of the optical imaging lens is 1.97, the axial distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S15 is 6.50 mm, the half diagonal length of the effective pixel area on the imaging surface S15 ImgH is 5.16 mm, and the half maximum field of view angle Semi-FOV is 42.49°.

[0126] 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.

[0127]

[0128] Table 9

[0129]

[0130]

[0131] Table 10

[0132] Fig. 10A The axial chromatic aberration curve of the optical imaging lens of Example 5 is shown, which indicates the deviation of the convergent focus of light of different wavelengths after passing through 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.

[0133] Example 6

[0134] 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.

[0135] like Fig.11As 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 and a filter E7.

[0136] 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 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 positive focal power, and its object side surface S11 is concave, and its image side surface S12 is concave. The filter E7 has an object side surface S13 and an image side surface S14. The optical imaging lens has an imaging surface S15, and the light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0137] In Example 6, the total effective focal length f of the optical imaging lens is 5.50 mm, the aperture number Fno of the optical imaging lens is 1.97, the axial distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S15 is 6.50 mm, the half diagonal length of the effective pixel area on the imaging surface S15 ImgH is 5.29 mm, and the half maximum field of view angle Semi-FOV is 42.73°.

[0138] 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.

[0139]

[0140]

[0141] Table 11

[0142] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -8.7997E-04 1.6523E-02 -3.2627E-02 -1.6104E-01 1.2834E+00 -4.1376E+00 8.0536E+00 -1.0430E+01 9.3031E+00 S2 -3.2593E-02 6.1505E-02 -3.6837E-01 1.6374E+00 -4.8391E+00 9.9250E+00 -1.4547E+01 1.5450E+01 -1.1913E+01 S3 -4.2068E-02 7.6623E-03 1.7094E-01 -7.1810E-01 1.8163E+00 -2.8867E+00 2.6469E+00 -7.7104E-01 -1.2071E+00 S4 -2.6649E-02 1.1247E-01 -7.6720E-01 4.2260E+00 -1.5549E+01 3.9550E+01 -7.1244E+01 9.1888E+01 -8.4825E+01 S5 -3.3801E-02 -9.2638E-02 9.2247E-01 -5.8303E+00 2.3751E+01 -6.5915E+01 1.2842E+02 -1.7852E+02 1.7780E+02 S6 -3.6149E-02 -1.4994E-02 3.1343E-02 -5.6959E-02 6.4928E-02 -1.3023E-01 3.1902E-01 -5.0924E-01 5.1021E-01 S7 -5.9400E-02 -6.2435E-02 2.8213E-01 -6.6816E-01 1.1428E+00 -1.4534E+00 1.3610E+00 -9.3120E-01 4.6237E-01 S8 -7.4593E-02 -6.8221E-02 1.7311E-01 -2.0312E-01 1.7212E-01 -1.1522E-01 6.0242E-02 -2.3641E-02 6.7440E-03 S9 -5.0334E-03 -9.8428E-02 9.5472E-02 -5.5413E-02 3.0766E-02 -1.8107E-02 8.5495E-03 -2.8142E-03 6.3124E-04 S10 4.8142E-02 -5.4788E-02 1.9888E-02 3.9581E-03 -1.1310E-03 -3.4351E-03 2.6095E-03 -9.1722E-04 1.9437E-04 S11 -1.7418E-01 7.3926E-02 5.4544E-03 -1.6624E-02 7.2182E-03 -1.7285E-03 2.6977E-04 -2.9122E-05 2.2235E-06 S12 -2.1467E-01 1.2120E-01 -4.5214E-02 1.1757E-02 -2.2163E-03 3.0780E-04 -3.1608E-05 2.3899E-06 -1.3152E-07

[0143] Table 12

[0144] Fig. 12A The axial chromatic aberration curve of the optical imaging lens of Example 6 is shown, which indicates the deviation of the convergent focus of light of different wavelengths after passing through 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. 12CThe 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.

[0145] Example 7

[0146] 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.

[0147] 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 and a filter E7.

[0148] 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 concave, and its image side surface S10 is convex. The sixth lens E6 has positive 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 optical imaging lens has an imaging surface S15, and the light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0149] In Example 7, the total effective focal length f of the optical imaging lens is 5.40 mm, the aperture number Fno of the optical imaging lens is 1.97, the axial distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S15 is 6.45 mm, the half diagonal length of the effective pixel area on the imaging surface S15 ImgH is 5.29 mm, and the half maximum field of view angle Semi-FOV is 43.23°.

[0150] Table 13 shows the basic parameters of the optical imaging lens of Example 7, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 14 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 7, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0151]

[0152] Table 13

[0153] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 4.9808E-03 -4.7854E-02 3.9341E-01 -2.0193E+00 6.9185E+00 -1.6404E+01 2.7537E+01 -3.3134E+01 2.8633E+01 S2 -3.4233E-02 -6.0384E-02 8.0530E-01 -4.9525E+00 1.9501E+01 -5.1946E+01 9.6651E+01 -1.2793E+02 1.2119E+02 S3 -6.0870E-02 7.6815E-02 -1.8524E-01 5.6420E-01 -1.4605E-02 -6.2050E+00 2.3800E+01 -4.8842E+01 6.4032E+01 S4 -3.7487E-02 2.1015E-01 -2.1058E+00 1.6100E+01 -8.0811E+01 2.7821E+02 -6.7575E+02 1.1751E+03 -1.4676E+03 S5 -5.1412E-02 6.5262E-02 -4.3190E-01 7.3539E-01 5.2163E+00 -3.9287E+01 1.3056E+02 -2.6720E+02 3.6513E+02 S6 -7.0521E-02 9.1187E-02 -4.4509E-01 7.0801E-01 1.5346E+00 -1.0986E+01 2.8570E+01 -4.4774E+01 4.6602E+01 S7 -1.1577E-01 4.4037E-01 -2.8070E+00 1.1165E+01 -3.0250E+01 5.8128E+01 -8.0908E+01 8.2312E+01 -6.1116E+01 S8 -9.8665E-02 6.0037E-02 -2.5477E-01 7.0392E-01 -1.0730E+00 1.0538E+00 -7.1810E-01 3.5090E-01 -1.2393E-01 S9 -6.5893E-02 -6.6597E-02 2.2723E-01 -5.3308E-01 1.0729E+00 -1.5315E+00 1.5024E+00 -1.0326E+00 5.0393E-01 S10 -3.0339E-02 3.9347E-02 -6.1379E-02 7.4245E-02 -5.4918E-02 2.6999E-02 -9.3969E-03 2.3796E-03 -4.3988E-04 S11 -1.6688E-01 5.1706E-02 -1.2996E-03 -4.4763E-03 1.7934E-03 -3.8382E-04 5.3299E-05 -5.0874E-06 3.4004E-07 S12 -1.6344E-01 7.5628E-02 -2.9648E-02 9.6536E-03 -2.5848E-03 5.5308E-04 -9.1676E-05 1.1477E-05 -1.0627E-06

[0154] Table 14

[0155] Fig.14A The axial chromatic aberration curve of the optical imaging lens of Example 7 is shown, which indicates the deviation of the convergent focus of light of different wavelengths after passing through 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.14D The 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.

[0156] In summary, Examples 1 to 7 respectively satisfy the relationships shown in Table 15.

[0157] Conditional formula\Example 1 2 3 4 5 6 7 TTL / ImgH 1.26 1.25 1.24 1.26 1.26 1.23 1.22 f4 / f -1.80 -1.63 -1.31 -2.04 -1.53 -1.93 -3.11 f1×tan(Semi-FOV)(mm) 4.67 4.08 4.23 4.52 5.59 4.94 4.52 R2 / f12 1.10 1.36 1.37 1.10 0.87 1.20 1.27 CT3 / T34 1.41 1.47 1.28 1.18 2.21 1.40 1.51 |f5 / f6| 1.06 0.97 1.01 1.24 1.21 1.41 1.84 (f4+f5) / f1 -1.17 -1.02 -0.83 -1.39 -0.66 -1.22 -1.97 SAG32 / SAG31 2.16 2.00 2.31 2.32 2.77 3.40 3.62 |SAG41+SAG42| / CT4 2.20 1.54 1.29 1.85 0.87 2.34 2.09 (ET2+ET3) / T23 1.74 2.04 2.18 1.38 1.31 2.02 2.04 f345 / f 0.94 1.02 0.72 0.96 1.10 0.83 1.21

[0158] Table 15

[0159] The present application also provides an imaging device, which is provided with an electronic photosensitive element for imaging, and the electronic photosensitive element can be a charge coupled device (CCD) or a complementary metal oxide semiconductor (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.

[0160] 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 protection 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 concept of the present application. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) to form a technical solution.

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 negative optical power, whose image side surface is concave; The third lens has positive power, and its object side surface is convex and its image side surface is convex; a fourth lens element having negative optical power and a concave object side surface; a fifth lens element having positive refractive power, the image-side surface of which is convex; and a sixth lens element having negative optical power, whose image side surface is concave; Wherein, the number of lenses having optical power of the optical imaging lens is six; Half of the diagonal length ImgH of the effective pixel area on the imaging plane of the optical imaging lens and the distance TTL from the object side of the first lens to the imaging plane of the optical imaging lens on the optical axis satisfy 1.23≤TTL / ImgH≤1.30; The effective focal length f1 of the first lens and half of the maximum field of view Semi-FOV of the optical imaging lens satisfy 4.08 mm ≤ f1 × tan (Semi-FOV) < 5.60 mm; The curvature radius R2 of the image side surface of the first lens and the combined focal length f12 of the first lens and the second lens satisfy 0.87≤R2 / f12<1.40; The effective focal length f1 of the first lens, the effective focal length f4 of the fourth lens, and the effective focal length f5 of the fifth lens satisfy -1.39≤(f4+f5) / f1≤-0.66; A center thickness CT3 of the third lens on the optical axis and a spacing distance T34 between the third lens and the fourth lens on the optical axis satisfy 1.15<CT3 / T34<2.

25.

2. The optical imaging lens according to claim 1, wherein: The effective focal length f4 of the fourth lens and the total effective focal length f of the optical imaging lens satisfy -2.04≤f4 / f<-1.

30.

3. The optical imaging lens according to claim 2, wherein: Half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens satisfies 5.15 mm≤ImgH≤5.29 mm.

4. The optical imaging lens according to claim 1, wherein: An effective focal length f5 of the fifth lens and an effective focal length f6 of the sixth lens satisfy 0.97≤|f5 / f6|≤1.

41.

5. The optical imaging lens according to claim 1, wherein: An on-axis distance SAG31 between the intersection of the object side surface of the third lens and the optical axis to the effective radius vertex of the object side surface of the third lens and an on-axis distance SAG32 between 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 satisfy 2.0≤SAG32 / SAG31≤3.

40.

6. The optical imaging lens according to claim 1, wherein: An on-axis distance SAG41 between the intersection of the object side surface of the fourth lens and the optical axis to the effective radius vertex of the object side surface of the fourth lens, an on-axis distance SAG42 between 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, and a center thickness CT4 of the fourth lens on the optical axis satisfy 0.87≤|SAG41+SAG42| / CT4≤2.

34.

7. The optical imaging lens according to claim 1, wherein: An edge thickness ET2 of the second lens, an edge thickness ET3 of the third lens, and a distance T23 between the second lens and the third lens on the optical axis satisfy 1.30<(ET2+ET3) / T23<2.

20.

8. The optical imaging lens according to claim 1, wherein: The combined focal length f345 of the third lens, the fourth lens and the fifth lens and the total effective focal length f of the optical imaging lens satisfy 0.70<f345 / f≤1.10.

Images