Optical imaging lens

Abstract

The present application discloses an optical imaging lens, which comprises, in order from the object side to the image side along the optical axis: a first lens with positive optical power; a second lens with optical power; a third lens with optical power; a fourth lens with optical power; a fifth lens with optical power, whose object side surface is convex and whose image side surface is convex; and a sixth lens with optical power, whose object side surface is concave; among the first to sixth lenses, at least one non-rotationally symmetric aspherical surface is included in the object side surface of the first lens to the image side surface of the sixth lens; wherein the center thickness CT1 of the first lens on the optical axis and the center thickness CT3 of the third lens on the optical axis satisfy: 0.3<CT3 / CT1<0.5; the total effective focal length f of the optical imaging lens, the effective focal length f3 of the third lens and the effective focal length f4 of the fourth lens satisfy: 0<f / (f3+f4)<0.6.

Description

Technical Field

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

[0002] In recent years, mobile phones and other electronic products have developed rapidly, and the functions of camera modules on mobile phones have been continuously improved. For example, the widespread use of multi-camera modules has led to an increasing demand for optical imaging lenses. In addition, consumers have increasingly higher requirements for the performance of optical imaging lenses, such as resolution.

[0003] For optical imaging lenses used in electronic products such as mobile phones, their size is greatly restricted. This is because electronic products such as mobile phones are usually thin and are constantly pursuing miniaturization. When optical imaging lenses pursue higher imaging performance and shorter total optical length at the same time, the design difficulty of optical imaging lenses increases day by day. For example, a wide-angle lens is usually set in a multi-camera module, and the TV distortion of images taken by a wide-angle lens is often large. People expect that the TV distortion of images taken by a wide-angle lens is smaller, but this is difficult to achieve when the design freedom of optical imaging lenses is getting smaller and smaller.

[0004] People expect an optical imaging lens that meets the characteristics of miniaturization and has at least one beneficial effect such as wide angle, high image quality, small aberration, and small TV distortion. Summary of the invention

[0005] The present application provides an optical imaging lens, which includes, in order from the object side to the image side along the optical axis: a first lens with positive optical power; a second lens with optical power; a third lens with optical power; a fourth lens with optical power; a fifth lens with optical power, whose object-side surface is convex and whose image-side surface is convex; and a sixth lens with optical power, whose object-side surface is concave; at least one non-rotationally symmetric aspherical surface is provided from the object-side surface of the first lens to the image-side surface of the sixth lens; wherein the center thickness CT1 of the first lens on the optical axis and the center thickness CT3 of the third lens on the optical axis can satisfy: 0.3<CT3 / CT1<0.5; the total effective focal length f of the optical imaging lens, the effective focal length f3 of the third lens and the effective focal length f4 of the fourth lens can satisfy: 0<f / (f3+f4)<0.6.

[0006] In one embodiment, the sum ΣCT of the center thicknesses of the first to sixth lenses on the optical axis and the sum ΣAT of the spacing distances between any two adjacent lenses of the first to sixth lenses on the optical axis may satisfy: 0.2<ΣAT / ΣCT<0.6.

[0007] In one embodiment, the effective focal length f1 of the first lens and the distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis may satisfy: 1.1<TTL / f1≤1.42.

[0008] In one embodiment, the spacing distance T12 between the first lens and the second lens on the optical axis, the spacing distance T23 between the second lens and the third lens on the optical axis, the spacing distance T34 between the third lens and the fourth lens on the optical axis, and the spacing distance T45 between the fourth lens and the fifth lens on the optical axis may satisfy: 0.7<(T23+T34) / (T12+T45)<1.5.

[0009] In one embodiment, a curvature radius R11 of the object-side surface of the sixth lens, a curvature radius R12 of the image-side surface of the sixth lens, and an effective focal length f6 of the sixth lens may satisfy: 0.2<f6 / (R11+R12)≤0.59.

[0010] In one embodiment, a curvature radius R9 of the object-side surface of the fifth lens and a curvature radius R10 of the image-side surface of the fifth lens may satisfy: -3.37≤R9 / R10<-2.5.

[0011] In one embodiment, the effective focal length f5 of the fifth lens and the effective focal length f6 of the sixth lens may satisfy: 0.6<|f5 / f6|<1.4.

[0012] In one implementation, a center thickness CT5 of the fifth lens on the optical axis and a center thickness CT6 of the sixth lens on the optical axis may satisfy: 0.4<CT6 / CT5≤0.67.

[0013] In one implementation, a center thickness CT6 of the sixth lens on the optical axis and an edge thickness ET6 of the sixth lens may satisfy: 0.1<CT6 / ET6≤0.72.

[0014] Another aspect of the present application provides an optical imaging lens, which includes, in order from the object side to the image side along the optical axis: a first lens with positive optical power; a second lens with optical power; a third lens with optical power; a fourth lens with optical power; a fifth lens with optical power, whose object-side surface is convex and whose image-side surface is convex; and a sixth lens with optical power, whose object-side surface is concave; at least one non-rotationally symmetric aspherical surface is provided from the object-side surface of the first lens to the image-side surface of the sixth lens; wherein the center thickness CT1 of the first lens on the optical axis and the center thickness CT3 of the third lens on the optical axis can satisfy: 0.3<CT3 / CT1<0.5; the center thickness CT6 of the sixth lens on the optical axis and the edge thickness ET6 of the sixth lens can satisfy: 0.1<CT6 / ET6≤0.72.

[0015] In one embodiment, the sum ΣCT of the center thicknesses of the first to sixth lenses on the optical axis and the sum ΣAT of the spacing distances between any two adjacent lenses of the first to sixth lenses on the optical axis may satisfy: 0.2<ΣAT / ΣCT<0.6.

[0016] In one embodiment, the effective focal length f1 of the first lens and the distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis may satisfy: 1.1<TTL / f1≤1.42.

[0017] In one embodiment, the spacing distance T12 between the first lens and the second lens on the optical axis, the spacing distance T23 between the second lens and the third lens on the optical axis, the spacing distance T34 between the third lens and the fourth lens on the optical axis, and the spacing distance T45 between the fourth lens and the fifth lens on the optical axis may satisfy: 0.7<(T23+T34) / (T12+T45)<1.5.

[0018] In one embodiment, a curvature radius R11 of the object-side surface of the sixth lens, a curvature radius R12 of the image-side surface of the sixth lens, and an effective focal length f6 of the sixth lens may satisfy: 0.2<f6 / (R11+R12)≤0.59.

[0019] In one embodiment, a curvature radius R9 of the object-side surface of the fifth lens and a curvature radius R10 of the image-side surface of the fifth lens may satisfy: -3.37≤R9 / R10<-2.5.

[0020] In one embodiment, the effective focal length f5 of the fifth lens and the effective focal length f6 of the sixth lens may satisfy: 0.6<|f5 / f6|<1.4.

[0021] In one implementation, a center thickness CT5 of the fifth lens on the optical axis and a center thickness CT6 of the sixth lens on the optical axis may satisfy: 0.4<CT6 / CT5≤0.67.

[0022] In one embodiment, the total effective focal length f of the optical imaging lens, the effective focal length f3 of the third lens element, and the effective focal length f4 of the fourth lens element may satisfy: 0<f / (f3+f4)<0.6.

[0023] The present application uses six lenses, and by reasonably allocating the focal length, surface shape, center thickness of each lens, and axial spacing between each lens, the above optical imaging lens has at least one beneficial effect of miniaturization, wide angle, and high image quality. Compared with the spherical mirror surface, the aspherical mirror surface has a non-rotationally symmetric component, thereby increasing the degree of freedom in optimizing the structure of the optical imaging lens.

[0024] For wide-angle lenses, aspheric surfaces can also effectively reduce TV distortion, improve image quality, reduce aberrations, reduce volume, and simplify the structure of the optical imaging system. Non-rotationally symmetric aspheric surfaces are more effective in these aspects and can also improve the appearance of the lens. The application of aspheric surfaces and non-rotationally symmetric aspheric surfaces in lenses has greatly improved the performance of optical imaging lenses.

[0025] Moreover, non-rotationally symmetric aspheric surfaces can be used in combination with lenses of selected materials, for example, non-rotationally symmetric aspheric surfaces can be manufactured on lenses made of plastic. By applying asymmetric complex surface processing technology, the industrialization of processing non-rotationally symmetric aspheric surfaces (i.e., free-form surfaces) becomes possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] 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:

[0027] Figure 1 A schematic structural diagram of an optical imaging lens according to Embodiment 1 of the present application is shown;

[0028] Figure 2 The diagram schematically shows the RMS spot diameter of the optical imaging lens of Example 1 in the first quadrant;

[0029] Figure 3 A schematic structural diagram of an optical imaging lens according to Embodiment 2 of the present application is shown;

[0030] Figure 4 The diagram schematically shows the RMS spot diameter of the optical imaging lens of Example 2 in the first quadrant;

[0031] Figure 5 A schematic structural diagram of an optical imaging lens according to Embodiment 3 of the present application is shown;

[0032] Figure 6 The RMS spot diameter of the optical imaging lens of Example 3 is schematically shown in the first quadrant;

[0033] Figure 7 A schematic structural diagram of an optical imaging lens according to Embodiment 4 of the present application is shown;

[0034] Figure 8 The RMS spot diameter of the optical imaging lens of Example 4 is schematically shown in the first quadrant;

[0035] Fig. 9 A schematic structural diagram of an optical imaging lens according to Embodiment 5 of the present application is shown;

[0036] Fig.10 The RMS spot diameter of the optical imaging lens of Example 5 is schematically shown in the first quadrant;

[0037] Fig.11 A schematic structural diagram of an optical imaging lens according to Embodiment 6 of the present application is shown;

[0038] Fig.12 The RMS spot diameter of the optical imaging lens of Example 6 in the first quadrant is schematically shown. DETAILED DESCRIPTION

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] In this article, we define the direction parallel to the optical axis as the Z-axis direction, the direction perpendicular to the Z-axis and located in the meridian plane as the Y-axis direction, and the direction perpendicular to the Z-axis and located in the sagittal plane as the X-axis direction. Unless otherwise specified, all parameter symbols (such as the radius of curvature, etc.) except for those related to the field of view in this article represent characteristic parameter values ​​along the Y-axis direction of the camera lens group.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] The features, principles and other aspects of the present application are described in detail below.

[0048] 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.

[0049] In example embodiments, the first lens may have positive optical power.

[0050] In an exemplary embodiment, 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 positive power or negative power. The fifth lens may have positive power or negative power, and its object side surface may be convex, and its image side surface may be convex. The sixth lens may have positive power or negative power, and its object side surface may be concave. By controlling the power of each lens assigned to the optical imaging lens and controlling the surface shape of each mirror surface, the low-order aberrations of the optical imaging lens can be effectively balanced, and it is beneficial to miniaturize the optical imaging lens.

[0051] 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.

[0052] In an exemplary embodiment, the object side surface or the image side surface of at least one of the first to sixth lenses is a non-rotationally symmetric aspherical surface. The non-rotationally symmetric aspherical surface is a rotationally symmetric aspherical surface with a non-rotationally symmetric component added thereto. The non-rotationally symmetric aspherical surface is beneficial for reducing optical distortion and TV distortion, and is beneficial for correcting the off-axis meridian aberration and sagittal aberration of the optical imaging lens, thereby improving the imaging quality of the optical imaging lens.

[0053] 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.

[0054] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 0.4<CT6 / CT5≤0.67, wherein CT5 is the center thickness of the fifth lens on the optical axis, and CT6 is the center thickness of the sixth lens on the optical axis. The optical imaging lens satisfies 0.4<CT6 / CT5≤0.67, which can better balance the chromatic aberration, while avoiding the fifth lens being too thin, thereby avoiding the processing of the fifth lens being too difficult. More specifically, CT5 and CT6 may satisfy: 0.50≤CT6 / CT5≤0.67.

[0055] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 0.2<∑AT / ∑CT<0.6, wherein ∑CT is the sum of the center thicknesses of the first lens to the sixth lens on the optical axis, and ∑AT is the sum of the spacing distances between any two adjacent lenses of the first lens to the sixth lens on the optical axis. Exemplarily, ∑CT=CT1+CT2+CT3+CT4+CT5+CT6, ∑AT=T12+T23+T34+T45+T56. The optical imaging lens satisfies 0.2<∑AT / ∑CT<0.6, so that the thickness of each lens can be reasonably distributed, and thus each lens has better processability; at the same time, the size of the air gap between each lens can be controlled, which can be beneficial to optimize the sensitivity of each lens. More specifically, ∑CT and ∑AT may satisfy: 0.42<∑AT / ∑CT<0.47.

[0056] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 0<f / (f3+f4)<0.6, where f is the total effective focal length of the optical imaging lens, f3 is the effective focal length of the third lens, and f4 is the effective focal length of the fourth lens. The optical imaging lens satisfies 0<f / (f3+f4)<0.6, which can ensure that it has a high aberration correction capability while its size can still be maintained at a small level. More specifically, f, f3 and f4 may satisfy: 0.15<f / (f3+f4)<0.46.

[0057] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 1.1<TTL / f1≤1.42, wherein f1 is the effective focal length of the first lens, and TTL is the distance from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis. By controlling the total optical length and the effective focal length of the first lens within this range, the overall size of the optical imaging lens can be effectively reduced, and the optical imaging lens can have ultra-thin characteristics and miniaturization characteristics. The optical imaging lens can be better suited for ultra-thin electronic products. More specifically, f1 and TTL can satisfy: 1.30<TTL / f1≤1.42.

[0058] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 0.7<(T23+T34) / (T12+T45)<1.5, wherein T12 is the spacing distance between the first lens and the second lens on the optical axis, T23 is the spacing distance between the second lens and the third lens on the optical axis, T34 is the spacing distance between the third lens and the fourth lens on the optical axis, and T45 is the spacing distance between the fourth lens and the fifth lens on the optical axis. The optical imaging lens satisfies 0.7<(T23+T34) / (T12+T45)<1.5, which can improve the light leakage at the edge of the field of view to improve stray light and ghost images, and can improve the illumination of the image plane on the basis of comprehensively improving stray light and ghost images. More specifically, T12, T23, T34 and T45 can satisfy: 0.95<(T23+T34) / (T12+T45)<1.35.

[0059] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 0.2<f6 / (R11+R12)≤0.59, wherein R11 is the radius of curvature of the object side surface of the sixth lens, R12 is the radius of curvature of the image side surface of the sixth lens, and f6 is the effective focal length of the sixth lens. The optical imaging lens satisfies 0.2<f6 / (R11+R12)≤0.59, can reasonably distribute its optical power, and balance the amount of astigmatism generated by the first three lenses with the amount of astigmatism generated by the last three lenses, thereby making it have good imaging quality. More specifically, R11, R12 and f6 may satisfy: 0.42<f6 / (R11+R12)≤0.59.

[0060] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula -3.37≤R9 / R10<-2.5, wherein R9 is the radius of curvature of the object side of the fifth lens, and R10 is the radius of curvature of the image side of the fifth lens. The optical imaging lens satisfies -3.37≤R9 / R10<-2.5, and can control the incident angle of light at its edge field of view, thereby reducing its sensitivity, and the optical imaging lens can better match the chip. More specifically, R9 and R10 can satisfy: -3.37≤R9 / R10<-2.80.

[0061] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 0.6<|f5 / f6|<1.4, where f5 is the effective focal length of the fifth lens and f6 is the effective focal length of the sixth lens. The optical imaging lens satisfies 0.6<|f5 / f6|<1.4, which can control the contribution of the two lenses to the aberrations and balance the aberrations generated by the two lenses with the aberrations generated by the first four lenses, thereby keeping the aberrations of the optical imaging lens at a reasonable level. More specifically, f5 and f6 may satisfy: 0.86<|f5 / f6|<1.20.

[0062] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 0.3<CT3 / CT1<0.5, wherein CT1 is the center thickness of the first lens on the optical axis, and CT3 is the center thickness of the third lens on the optical axis. The optical imaging lens satisfies 0.3<CT3 / CT1<0.5, which can better balance the chromatic aberration of the optical imaging lens, while at the same time not making the third lens too thin, thereby avoiding difficulties in the processing of the third lens. More specifically, CT1 and CT3 may satisfy: 0.40<CT3 / CT1<0.45.

[0063] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 0.1<CT6 / ET6≤0.72, wherein CT6 is the center thickness of the sixth lens on the optical axis, and ET6 is the edge thickness of the sixth lens. The ratio of the center thickness of the sixth lens to its edge thickness is within this range, which is conducive to its processing and forming, and specifically can reduce the processing difficulty and weld mark risk of the sixth lens. More specifically, CT6 and ET6 may satisfy: 0.35<CT6 / ET6≤0.72.

[0064] 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 lenses, etc., the volume of the imaging lens can be effectively reduced, the sensitivity of the imaging lens can be reduced, and the processability of the imaging lens can be improved, making the optical imaging lens more conducive to production and processing and applicable to portable electronic products. At the same time, the optical imaging lens of the present application also has the characteristics of miniaturization, large viewing angle, and excellent optical properties such as low aberration, low distortion, and high image quality.

[0065] 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.

[0066] Specific embodiments of the optical imaging lens applicable to the above-mentioned embodiments are further described below with reference to the accompanying drawings.

[0067] Example 1

[0068] The following reference Figure 1 to Figure 2 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.

[0069] 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.

[0070] 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 negative 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.

[0071] 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).

[0072]

[0073] Table 1

[0074] In Example 1, the total effective focal length f of the optical imaging lens is 4.57 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 5.71 mm, the half diagonal length of the effective pixel area on the imaging surface S15 ImgH is 4.61 mm, and the half maximum field of view angle Semi-FOV is 42.1°.

[0075] In Example 1, the object side surface and the image side surface of any lens among the first lens E1 to the fifth lens E5 are both rotationally symmetric aspherical surfaces, and the surface shape x of each rotationally symmetric aspherical lens can be defined by but not limited to the following aspherical formula:

[0076]

[0077] 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 , A 20 , A 22 , A 24 , A 26 , A 28 and A 30 .

[0078] Face number A4 A6 A8 A10 A12 A14 A16 S1 4.3075E-03 -3.9589E-03 -2.3457E-03 -8.2535E-04 -2.1487E-04 -2.7647E-05 3.8012E-06 S2 -6.2537E-02 2.6041E-03 -1.2057E-03 2.6316E-05 6.3492E-06 6.2503E-06 4.0180E-05 S3 -1.0680E-02 1.4409E-02 2.5708E-04 6.0440E-04 6.0719E-05 -2.4536E-05 1.2338E-05 S4 3.4704E-02 9.4568E-03 5.5390E-04 4.5910E-04 1.1301E-04 1.6297E-05 -1.8581E-06 S5 -1.1325E-01 -1.1602E-02 -2.3106E-03 2.0691E-05 1.0362E-04 1.6517E-04 6.2211E-05 S6 -2.0869E-01 -4.3762E-03 3.1684E-03 3.0536E-03 1.1027E-03 6.2597E-04 1.3374E-04 S7 -3.7647E-01 4.6691E-02 -2.6055E-03 -5.4019E-03 -3.5758E-03 -5.6538E-05 -7.0454E-05 S8 -6.0070E-01 1.6808E-01 -2.3503E-02 -1.4473E-02 3.4320E-05 4.2399E-03 -8.8416E-04 S9 -1.1448E+00 1.2695E-01 8.4680E-02 -1.1073E-02 -2.2334E-02 4.0263E-03 2.3967E-03 S10 5.4728E-01 -1.2908E-01 8.2429E-02 -6.1977E-03 -1.3516E-02 1.2305E-02 -1.7987E-03 Face number A18 A20 A22 A24 A26 A28 A30 S1 5.4506E-06 -3.7265E-07 -4.1871E-07 -6.1844E-07 0.0000E+00 0.0000E+00 0.0000E+00 S2 2.4631E-05 2.5233E-06 -5.2448E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 1.6746E-05 9.1587E-06 0.0000E+00 0.0000E+0 0.0000E+00 0.0000E+00 0.0000E+00 S4 -3.4958E-06 -2.5705E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 4.3736E-05 1.1671E-05 8.5128E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 1.2214E-05 -3.0928E-05 -1.0533E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 -1.7365E-04 -1.2935E-04 3.0082E-06 2.8833E-05 2.5001E-05 8.4323E-06 6.6737E-06 S8 -7.4748E-04 1.9171E-04 2.8637E-04 -3.4445E-05 -8.5395E-05 -1.6504E-05 9.2924E-06 S9 1.3626E-03 -5.1657E-04 -9.4252E-04 3.2941E-06 2.7982E-04 7.7119E-05 -6.5091E-05 S10 -1.3782E-03 -4.8245E-04 -1.4319E-03 9.2393E-05 3.9983E-04 2.0533E-04 7.8625E-05

[0079] Table 2

[0080] It can also be seen from Table 1 that the object-side surface S11 and the image-side surface S12 of the sixth lens E6 are non-rotationally symmetric aspherical surfaces (i.e., AAS surfaces). The surface shape of the non-rotationally symmetric aspherical surfaces can be defined by, but not limited to, the following non-rotationally symmetric aspherical surface formula:

[0081]

[0082] Among them, z is the sag of the surface parallel to the Z axis; C is the curvature of the vertex (curvature is the inverse of the radius of curvature); K is the cone coefficient; r is the radius value, specifically ZP j is the jth Zernike polynomial, C (j+1) It's ZP j The coefficients of the Zernike terms from ZP1 to ZP66 have corresponding SCO coefficients C2 to C67, and the SCO coefficients not given are all 0. is the mth qcon polynomial, a m is the mth qcon coefficient, r n is the normalized radius.

[0083] Table 3 below lists the rotationally symmetric components of the non-rotationally symmetric aspherical surfaces S11 and S12 that can be used in Example 1 and the various high-order coefficients of the non-rotationally symmetric components.

[0084] AAS side C2 C5 C6 C12 C13 C14 C23 S11 -2.9349E-01 1.1895E-01 -1.0340E-01 8.5807E-02 3.0659E-02 2.6358E-01 1.6659E-01 S12 -2.1968E+00 3.8038E-01 -2.6688E+00 4.6678E-02 1.2899E-01 -9.7244E-02 6.3737E-02 AAS side C24 C25 C26 C38 C39 C40 C41 S11 3.6058E-03 7.4983E-03 -4.9735E-02 7.0894E-02 2.0041E-02 -2.7772E-02 -3.7580E-03 S12 1.6827E-02 2.4644E-02 1.2219E-01 1.0643E-02 -1.6034E-02 -7.5269E-02 1.6134E-02 AAS side C42 C57 C58 C59 C60 C61 C62 S11 -4.2418E-02 -7.1591E-02 -9.4708E-03 4.2940E-03 -1.4267E-04 5.9175E-03 3.4885E-02 S12 6.3623E-02 -1.5798E-01 2.7213E-02 6.1627E-03 3.3418E-02 3.3797E-02 5.8556E-02

[0085] Table 3

[0086] Figure 2The diagram shows the size of the RMS spot diameter of the optical imaging lens of Example 1 at different image height positions in the first quadrant. Figure 2 The relationship between the RMS spot diameter and the real light image height is shown. Figure 2 Among them, the smallest RMS spot diameter is 0.0023392mm, the largest RMS spot diameter is 0.074676mm, the mean RMS spot diameter is 0.012308mm, and the standard deviation of the RMS spot diameter is 0.013633mm. Figure 2 It can be seen that the optical imaging lens provided in Example 1 can achieve good imaging quality.

[0087] Example 2

[0088] The following reference Figure 3 to Figure 4 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.

[0089] 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.

[0090] 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 convex, and its image side surface S8 is concave. The fifth lens E5 has positive focal power, and its object side surface S9 is convex, and its image side surface S10 is convex. The sixth lens E6 has negative focal power, and its object side surface S11 is 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.

[0091] In Example 2, the total effective focal length f of the optical imaging lens is 4.58 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 5.71 mm, the half diagonal length of the effective pixel area on the imaging surface S15 ImgH is 3.32 mm, and the half maximum field of view angle Semi-FOV is 31.82°.

[0092] Table 4 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 5 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-mentioned Example 1. Table 6 shows the rotationally symmetric components and the high-order coefficients of the non-rotationally symmetric components of the non-rotationally symmetric aspherical surfaces S11 and S12 that can be used in Example 2, wherein the surface type of the non-rotationally symmetric aspherical surface can be defined by the formula (2) given in the above-mentioned Example 1.

[0093]

[0094]

[0095] Table 4

[0096] Face number A4 A6 A8 A10 A12 A14 A16 S1 4.3075E-03 -3.9589E-03 -2.3457E-03 -8.2535E-04 -2.1487E-04 -2.7647E-05 3.8012E-06 S2 -6.2537E-02 2.6041E-03 -1.2057E-03 2.6316E-05 6.3492E-06 6.2503E-06 4.0180E-05 S3 -1.0680E-02 1.4409E-02 2.5708E-04 6.0440E-04 6.0719E-05 -2.4536E-05 1.2338E-05 S4 3.4704E-02 9.4568E-03 5.5390E-04 4.5910E-04 1.1301E-04 1.6297E-05 -1.8581E-06 S5 -1.1398E-01 -1.2209E-02 -2.2125E-03 1.7504E-05 -1.0473E-05 9.9850E-05 -4.8619E-07 S6 -2.0712E-01 -8.4041E-03 3.4969E-03 3.1077E-03 1.2761E-03 8.9050E-04 3.7952E-04 S7 -3.7647E-01 4.6691E-02 -2.6055E-03 -5.4019E-03 -3.5758E-03 -5.6538E-05 -7.0454E-05 S8 -6.0070E-01 1.6808E-01 -2.3503E-02 -1.4473E-02 3.4320E-05 4.2399E-03 -8.8416E-04 S9 -1.1448E+00 1.2695E-01 8.4680E-02 -1.1073E-02 -2.2334E-02 4.0263E-03 2.3967E-03 S10 5.4728E-01 -1.2908E-01 8.2429E-02 -6.1977E-03 -1.3516E-02 1.2305E-02 -1.7987E-03 Face number A18 A20 A22 A24 A26 A28 A30 S1 5.4506E-06 -3.7265E-07 -6.1844E-07 0.0000E+00 0.0000E+00 0.0000E+00 -6.1844E-07 S2 2.4631E-05 2.5233E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 1.6746E-05 9.1587E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 -3.4958E-06 -2.5705E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 2.4283E-05 -5.7411E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 1.8289E-04 4.2073E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 -1.7365E-04 -1.2935E-04 2.8833E-05 2.5001E-05 8.4323E-06 6.6737E-06 2.8833E-05 S8 -7.4748E-04 1.9171E-04 -3.4445E-05 -8.5395E-05 -1.6504E-05 9.2924E-06 -3.4445E-05 S9 1.3626E-03 -5.1657E-04 3.2941E-06 2.7982E-04 7.7119E-05 -6.5091E-05 3.2941E-06 S10 -1.3782E-03 -4.8245E-04 9.2393E-05 3.9983E-04 2.0533E-04 7.8625E-05 9.2393E-05

[0097] Table 5

[0098] AAS side C2 C5 C6 C12 C13 C14 C23 S11 -2.4551E-01 9.3021E-02 -1.9658E-01 9.2205E-02 2.2157E-02 2.9786E-01 9.8681E-02 S12 -2.2446E+00 2.9101E-01 -2.7043E+00 1.7843E-01 -1.5447E-02 -9.0267E-02 2.7872E-02 AAS side C24 C25 C26 C38 C39 C40 C41 S11 -2.8622E-02 -1.4594E-02 -4.7893E-02 6.5417E-02 2.0279E-02 -1.3081E-02 3.8334E-03 S12 -1.8405E-02 -6.5510E-03 1.0002E-01 -6.5584E-02 3.3660E-03 6.3418E-02 4.8556E-02 AAS side C42 C57 C58 C59 C60 C61 C62 S11 -5.4090E-02 -1.0270E-01 9.8860E-03 1.4208E-02 -1.7753E-03 8.5596E-03 3.5868E-02 S12 3.2660E-02 -1.5178E-01 1.4997E-02 4.3298E-02 3.0256E-02 2.1539E-02 6.1360E-02

[0099] Table 6

[0100] Figure 4 The RMS spot diameter of the optical imaging lens of Example 2 at different image height positions in the first quadrant is shown. Figure 4 The relationship between the RMS spot diameter and the real light image height is shown. Figure 4 Among them, the smallest RMS spot diameter is 0.0031002mm, the largest RMS spot diameter is 0.055112mm, the mean RMS spot diameter is 0.0081921mm, and the standard deviation of the RMS spot diameter is 0.0085014mm. Figure 4 It can be seen that the optical imaging lens provided in Example 2 can achieve good imaging quality.

[0101] Example 3

[0102] The following reference Figure 5 to Figure 6 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.

[0103] 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.

[0104] 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 concave. The fifth lens E5 has positive focal power, and its object side surface S9 is convex, and its image side surface S10 is convex. The sixth lens E6 has negative focal power, and its object side surface S11 is 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.

[0105] In Example 3, the total effective focal length f of the optical imaging lens is 4.75 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 5.79 mm, the half diagonal length of the effective pixel area on the imaging surface S15 ImgH is 3.69 mm, and the half maximum field of view angle Semi-FOV is 35.45°.

[0106] Table 7 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 8 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-mentioned Example 1. Table 9 shows the rotationally symmetric components and the high-order coefficients of the non-rotationally symmetric components of the non-rotationally symmetric aspherical surfaces S11 and S12 that can be used in Example 3, wherein the surface type of the non-rotationally symmetric aspherical surface can be defined by the formula (2) given in the above-mentioned Example 1.

[0107]

[0108] Table 7

[0109] Face number A4 A6 A8 A10 A12 A14 A16 S1 4.3075E-03 -3.9589E-03 -2.3457E-03 -8.2535E-04 -2.1487E-04 -2.7647E-05 3.8012E-06 S2 -6.2537E-02 2.6041E-03 -1.2057E-03 2.6316E-05 6.3492E-06 6.2503E-06 4.0180E-05 S3 -1.0680E-02 1.4409E-02 2.5708E-04 6.0440E-04 6.0719E-05 -2.4536E-05 1.2338E-05 S4 3.4704E-02 9.4568E-03 5.5390E-04 4.5910E-04 1.1301E-04 1.6297E-05 -1.8581E-06 S5 -1.1319E-01 -1.1852E-02 -2.0775E-03 -8.1081E-05 5.7600E-05 8.8956E-05 2.7133E-05 S6 -2.0776E-01 -4.6189E-03 3.4858E-03 2.6713E-03 1.1500E-03 7.0926E-04 2.9086E-04 S7 -3.7647E-01 4.6691E-02 -2.6055E-03 -5.4019E-03 -3.5758E-03 -5.6538E-05 -7.0454E-05 S8 -6.0070E-01 1.6808E-01 -2.3503E-02 -1.4473E-02 3.4320E-05 4.2399E-03 -8.8416E-04 S9 -1.1448E+00 1.2695E-01 8.4680E-02 -1.1073E-02 -2.2334E-02 4.0263E-03 2.3967E-03 S10 5.4728E-01 -1.2908E-01 8.2429E-02 -6.1977E-03 -1.3516E-02 1.2305E-02 -1.7987E-03 Face number A18 A20 A22 A24 A26 A28 A30 S1 5.4506E-06 -3.7265E-07 -6.1844E-07 0.0000E+00 0.0000E+00 0.0000E+00 -6.1844E-07 S2 2.4631E-05 2.5233E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 1.6746E-05 9.1587E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 -3.4958E-06 -2.5705E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 1.7735E-05 2.5762E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 1.0548E-04 2.2940E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 -1.7365E-04 -1.2935E-04 2.8833E-05 2.5001E-05 8.4323E-06 6.6737E-06 2.8833E-05 S8 -7.4748E-04 1.9171E-04 -3.4445E-05 -8.5395E-05 -1.6504E-05 9.2924E-06 -3.4445E-05 S9 1.3626E-03 -5.1657E-04 3.2941E-06 2.7982E-04 7.7119E-05 -6.5091E-05 3.2941E-06 S10 -1.3782E-03 -4.8245E-04 9.2393E-05 3.9983E-04 2.0533E-04 7.8625E-05 9.2393E-05

[0110] Table 8

[0111] AAS side C2 C5 C6 C12 C13 C14 C23 S11 -2.7409E-01 1.0338E-01 -1.3948E-01 9.2270E-02 1.9292E-02 2.8192E-01 1.6157E-01 S12 -2.2053E+00 3.7804E-01 -2.6667E+00 6.9656E-02 1.0599E-01 -1.0216E-01 5.9712E-02 AAS side C24 C25 C26 C38 C39 C40 C41 S11 -9.4270E-03 -1.5284E-02 -7.7511E-02 9.9802E-02 2.2516E-02 -1.9479E-03 1.7041E-03 S12 -5.3409E-02 3.5992E-02 1.0527E-01 -2.5120E-02 1.2301E-02 1.0539E-02 2.8544E-02 AAS side C42 C57 C58 C59 C60 C61 C62 S11 -3.4854E-02 -2.9024E-03 4.2905E-03 4.9434E-03 1.2741E-03 4.6652E-03 3.8439E-02 S12 6.4743E-02 -1.3207E-01 -1.9366E-02 1.7532E-02 3.4947E-03 6.3142E-03 5.5674E-02

[0112] Table 9

[0113] Figure 6 The RMS spot diameter of the optical imaging lens of Example 3 at different image height positions in the first quadrant is shown. Figure 6 The relationship between the RMS spot diameter and the real light image height is shown. Figure 6Among them, the smallest RMS spot diameter is 0.0023392mm, the largest RMS spot diameter is 0.074676mm, the mean RMS spot diameter is 0.012308mm, and the standard deviation of the RMS spot diameter is 0.013633mm. Figure 6 It can be seen that the optical imaging lens provided in Example 3 can achieve good imaging quality.

[0114] Example 4

[0115] The following reference Figures 7 and 8 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.

[0116] 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.

[0117] 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 concave. 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 negative 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.

[0118] In Example 4, the total effective focal length f of the optical imaging lens is 4.71 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 5.75 mm, the half diagonal length of the effective pixel area on the imaging surface S15 ImgH is 3.69 mm, and the half maximum field of view angle Semi-FOV is 35.16°.

[0119] Table 10 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 11 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-mentioned Example 1. Table 12 shows the rotationally symmetric components and the high-order coefficients of the non-rotationally symmetric components of the non-rotationally symmetric aspherical surfaces S11 and S12 that can be used in Example 4, wherein the surface type of the non-rotationally symmetric aspherical surface can be defined by the formula (2) given in the above-mentioned Example 1.

[0120]

[0121] Table 10

[0122]

[0123]

[0124] Table 11

[0125] AAS side C2 C5 C6 C12 C13 C14 C23 S11 -2.7842E-01 1.2462E-01 -1.3850E-01 9.0963E-02 2.5798E-02 2.7877E-01 1.6250E-01 S12 -2.1967E+00 4.5424E-01 -2.6725E+00 6.3511E-02 1.3534E-01 -1.0197E-01 6.7516E-02 AAS side C24 C25 C26 C38 C39 C40 C41 S11 -1.1406E-02 -1.7376E-02 -7.4867E-02 9.2303E-02 2.0988E-02 -1.4284E-03 1.2424E-03 S12 -6.5628E-02 3.7539E-02 1.1046E-01 -3.8334E-02 2.0065E-02 9.1517E-03 2.7544E-02 AAS side C42 C57 C58 C59 C60 C61 C62 S11 -3.5155E-02 -9.1247E-03 4.6322E-03 4.2365E-03 1.7105E-03 5.6265E-03 3.9404E-02 S12 6.7553E-02 -1.2139E-01 -1.3447E-02 1.9420E-02 5.3539E-03 7.2570E-03 5.7953E-02

[0126] Table 12

[0127] Figure 8 The RMS spot diameter of the optical imaging lens of Example 4 at different image height positions in the first quadrant is shown. Figure 8 The relationship between the RMS spot diameter and the real light image height is shown. Figure 8 Among them, the smallest RMS spot diameter is 0.002095mm, the largest RMS spot diameter is 0.073697mm, the mean RMS spot diameter is 0.011293mm, and the standard deviation of the RMS spot diameter is 0.013354mm. Figure 8 It can be seen that the optical imaging lens provided in Example 4 can achieve good imaging quality.

[0128] Example 5

[0129] The following reference Figures 9 and 10 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.

[0130] 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.

[0131] 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 convex, and its image side surface S8 is concave. The fifth lens E5 has positive focal power, and its object side surface S9 is convex, and its image side surface S10 is convex. The sixth lens E6 has negative focal power, and its object side surface S11 is 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.

[0132] In Example 5, the total effective focal length f of the optical imaging lens is 4.69 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 5.73 mm, the half diagonal length of the effective pixel area on the imaging surface S15 ImgH is 3.69 mm, and the half of the maximum field of view angle Semi-FOV is 35.30°.

[0133] Table 13 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 14 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-mentioned Example 1. Table 15 shows the rotationally symmetric components and the high-order coefficients of the non-rotationally symmetric components of the non-rotationally symmetric aspherical surfaces S11 and S12 that can be used in Example 5, wherein the surface type of the non-rotationally symmetric aspherical surface can be defined by the formula (2) given in the above-mentioned Example 1.

[0134]

[0135] Table 13

[0136] Face number A4 A6 A8 A10 A12 A14 A16 S1 4.3075E-03 -3.9589E-03 -2.3457E-03 -8.2535E-04 -2.1487E-04 -2.7647E-05 3.8012E-06 S2 -6.2537E-02 2.6041E-03 -1.2057E-03 2.6316E-05 6.3492E-06 6.2503E-06 4.0180E-05 S3 -1.0680E-02 1.4409E-02 2.5708E-04 6.0440E-04 6.0719E-05 -2.4536E-05 1.2338E-05 S4 3.4704E-02 9.4568E-03 5.5390E-04 4.5910E-04 1.1301E-04 1.6297E-05 -1.8581E-06 S5 -1.1303E-01 -1.1501E-02 -2.1885E-03 -6.1159E-05 7.4047E-06 8.4379E-05 9.3118E-06 S6 -2.0901E-01 -4.7859E-03 3.4176E-03 2.7966E-03 1.0907E-03 6.9674E-04 2.6041E-04 S7 -3.7647E-01 4.6691E-02 -2.6055E-03 -5.4019E-03 -3.5758E-03 -5.6538E-05 -7.0454E-05 S8 -6.0070E-01 1.6808E-01 -2.3503E-02 -1.4473E-02 3.4320E-05 4.2399E-03 -8.8416E-04 S9 -1.1448E+00 1.2695E-01 8.4680E-02 -1.1073E-02 -2.2334E-02 4.0263E-03 2.3967E-03 S10 5.4728E-01 -1.2908E-01 8.2429E-02 -6.1977E-03 -1.3516E-02 1.2305E-02 -1.7987E-03 Face number A18 A20 A22 A24 A26 A28 A30 S1 5.4506E-06 -3.7265E-07 -6.1844E-07 0.0000E+00 0.0000E+00 0.0000E+00 -6.1844E-07 S2 2.4631E-05 2.5233E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 1.6746E-05 9.1587E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 -3.4958E-06 -2.5705E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 1.6751E-05 -2.1530E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 1.0422E-04 2.0623E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 -1.7365E-04 -1.2935E-04 2.8833E-05 2.5001E-05 8.4323E-06 6.6737E-06 2.8833E-05 S8 -7.4748E-04 1.9171E-04 -3.4445E-05 -8.5395E-05 -1.6504E-05 9.2924E-06 -3.4445E-05 S9 1.3626E-03 -5.1657E-04 3.2941E-06 2.7982E-04 7.7119E-05 -6.5091E-05 3.2941E-06 S10 -1.3782E-03 -4.8245E-04 9.2393E-05 3.9983E-04 2.0533E-04 7.8625E-05 9.2393E-05

[0137] Table 14

[0138] AAS side C2 C5 C6 C12 C13 C14 C23 S11 -2.7181E-01 1.0423E-01 -1.4696E-01 8.3593E-02 2.6357E-02 2.8300E-01 1.6864E-01 S12 -2.2291E+00 3.4358E-01 -2.7298E+00 6.4381E-02 1.1142E-01 -1.1015E-01 7.5077E-02 AAS side C24 C25 C26 C38 C39 C40 C41 S11 -1.1972E-02 -1.1212E-02 -7.7648E-02 9.7860E-02 2.1165E-02 -4.0637E-03 1.2035E-03 S12 -4.1900E-02 4.3442E-02 1.1498E-01 -2.8089E-02 2.0982E-02 1.0234E-02 2.3561E-02 AAS side C42 C57 C58 C59 C60 C61 C62 S11 -3.6582E-02 -1.0607E-02 1.8254E-03 3.7279E-03 3.0475E-04 3.7380E-03 3.9782E-02 S12 6.1449E-02 -1.2315E-01 -1.7356E-02 1.7644E-02 1.0917E-03 2.3612E-03 5.5535E-02

[0139] Table 15

[0140] Fig.10 The RMS spot diameter of the optical imaging lens of Example 5 at different image height positions in the first quadrant is shown. Fig.10 The relationship between the RMS spot diameter and the real light image height is shown. Fig.10Among them, the smallest RMS spot diameter is 0.0019654mm, the largest RMS spot diameter is 0.05276mm, the mean RMS spot diameter is 0.010038mm, and the standard deviation of the RMS spot diameter is 0.010238mm. Fig.10 It can be seen that the optical imaging lens provided in Example 5 can achieve good imaging quality.

[0141] Example 6

[0142] The following reference Figure 11 to Figure 12 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.

[0143] 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 and a filter E7.

[0144] 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 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.

[0145] In Example 6, the total effective focal length f of the optical imaging lens is 4.74 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 5.85 mm, the half diagonal length of the effective pixel area on the imaging surface S15 ImgH is 3.69 mm, and the half maximum field of view angle Semi-FOV is 35.40°.

[0146] Table 16 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 17 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-mentioned Example 1. Table 18 shows the rotationally symmetric components and the high-order coefficients of the non-rotationally symmetric components of the non-rotationally symmetric aspherical surfaces S11 and S12 that can be used in Example 6, wherein the surface type of the non-rotationally symmetric aspherical surface can be defined by the formula (2) given in the above-mentioned Example 1.

[0147]

[0148]

[0149] Table 16

[0150] Face number A4 A6 A8 A10 A12 A14 A16 S1 4.3075E-03 -3.9589E-03 -2.3457E-03 -8.2535E-04 -2.1487E-04 -2.7647E-05 3.8012E-06 S2 4.3075E-03 -3.9589E-03 -2.3457E-03 -8.2535E-04 -2.1487E-04 -2.7647E-05 3.8012E-06 S3 -1.0680E-02 1.4409E-02 2.5708E-04 6.0440E-04 6.0719E-05 -2.4536E-05 1.2338E-05 S4 3.4704E-02 9.4568E-03 5.5390E-04 4.5910E-04 1.1301E-04 1.6297E-05 -1.8581E-06 S5 -1.1376E-01 -1.1649E-02 -2.5259E-03 -1.1756E-04 1.5322E-05 7.5157E-05 1.0526E-05 S6 -2.0725E-01 -5.0667E-03 3.2363E-03 3.1265E-03 1.2527E-03 6.3982E-04 2.0802E-04 S7 -3.7647E-01 4.6691E-02 -2.6055E-03 -5.4019E-03 -3.5758E-03 -5.6538E-05 -7.0454E-05 S8 -6.0070E-01 1.6808E-01 -2.3503E-02 -1.4473E-02 3.4320E-05 4.2399E-03 -8.8416E-04 S9 -1.1448E+00 1.2695E-01 8.4680E-02 -1.1073E-02 -2.2334E-02 4.0263E-03 2.3967E-03 S10 5.4728E-01 -1.2908E-01 8.2429E-02 -6.1977E-03 -1.3516E-02 1.2305E-02 -1.7987E-03 Face number A18 A20 A22 A24 A26 A28 A30 S1 5.4506E-06 -3.7265E-07 -6.1844E-07 0.0000E+00 0.0000E+00 0.0000E+00 -6.1844E-07 S2 5.4506E-06 -3.7265E-07 -6.1844E-07 0.0000E+00 0.0000E+00 0.0000E+00 -6.1844E-07 S3 1.6746E-05 9.1587E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 -3.4958E-06 -2.5705E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 9.3185E-06 -6.0565E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 6.0497E-05 8.5747E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 -1.7365E-04 -1.2935E-04 2.8833E-05 2.5001E-05 8.4323E-06 6.6737E-06 2.8833E-05 S8 -7.4748E-04 1.9171E-04 -3.4445E-05 -8.5395E-05 -1.6504E-05 9.2924E-06 -3.4445E-05 S9 1.3626E-03 -5.1657E-04 3.2941E-06 2.7982E-04 7.7119E-05 -6.5091E-05 3.2941E-06 S10 -1.3782E-03 -4.8245E-04 9.2393E-05 3.9983E-04 2.0533E-04 7.8625E-05 9.2393E-05

[0151] Table 17

[0152] AAS side C2 C5 C6 C12 C13 C14 C23 S11 -2.9349E-01 1.1895E-01 -1.0340E-01 8.5807E-02 3.0659E-02 2.6358E-01 1.6659E-01 S12 -2.1968E+00 3.8038E-01 -2.6688E+00 4.6678E-02 1.2899E-01 -9.7244E-02 6.3737E-02 AAS side C24 C25 C26 C38 C39 C40 C41 S11 -1.4294E-02 -1.6467E-02 -7.0899E-02 8.4405E-02 2.3416E-02 -9.2010E-03 3.2626E-03 S12 -4.2809E-02 3.9433E-02 1.3501E-01 -3.4955E-02 3.1506E-02 1.3203E-02 2.8237E-02 AAS side C42 C57 C58 C59 C60 C61 C62 S11 -4.0371E-02 -1.3135E-02 5.9186E-03 2.7411E-03 3.9575E-04 7.8592E-03 3.9944E-02 S12 6.9211E-02 -1.3622E-01 -9.7288E-03 2.2172E-02 7.2036E-03 1.0865E-02 6.1961E-02

[0153] Table 18

[0154] Fig.12 The RMS spot diameter of the optical imaging lens of Example 6 at different image height positions in the first quadrant is shown. Fig.12 The relationship between the RMS spot diameter and the real light image height is shown. Fig.12 Among them, the smallest RMS spot diameter is 0.0025496mm, the largest RMS spot diameter is 0.065003mm, the mean RMS spot diameter is 0.011517mm, and the standard deviation of the RMS spot diameter is 0.011824mm. Fig.12 It can be seen that the optical imaging lens provided in Example 6 can achieve good imaging quality.

[0155] In summary, Examples 1 to 6 respectively satisfy the relationships shown in Table 19.

[0156] Conditional formula\Example 1 2 3 4 5 6 TTL / f1 1.32 1.42 1.34 1.33 1.32 1.36 R9 / R10 -3.05 -3.30 -3.09 -2.94 -2.86 -3.37 |f5 / f6| 0.89 1.11 1.18 1.15 1.16 1.15 ∑AT / ∑CT 0.46 0.45 0.45 0.45 0.45 0.44 CT3 / CT1 0.42 0.43 0.44 0.41 0.42 0.42 f / (f3+f4) 0.40 0.24 0.27 0.18 0.18 0.45 f6 / (R11+R12) 0.56 0.59 0.46 0.49 0.48 0.47 (T23+T34) / (T12+T45) 1.33 0.98 1.22 1.23 1.20 1.25 CT6 / CT5 0.67 0.52 0.64 0.64 0.62 0.67 CT6 / ET6 0.72 0.37 0.47 0.47 0.46 0.46

[0157] Table 19

[0158] 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.

[0159] 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; a third lens having positive refractive power; a fourth lens having negative optical power; a fifth lens element having positive refractive power, whose object-side surface is convex and whose image-side surface is convex; and a sixth lens having negative optical power, whose object-side surface is concave and whose image-side surface is concave; There is at least one non-rotationally symmetric aspherical surface between the object side surface of the first lens and the image side surface of the sixth lens; The number of lenses having optical power in the optical imaging lens is six; Wherein, the center thickness CT1 of the first lens on the optical axis and the center thickness CT3 of the third lens on the optical axis satisfy: 0.40<CT3 / CT1<0.45; The total effective focal length f of the optical imaging lens, the effective focal length f3 of the third lens, and the effective focal length f4 of the fourth lens satisfy: 0.15<f / (f3+f4)<0.46; The curvature radius R11 of the object side surface of the sixth lens, the curvature radius R12 of the image side surface of the sixth lens, and the effective focal length f6 of the sixth lens satisfy: 0.42<f6 / (R11+R12)≤0.59; A curvature radius R9 of the object-side surface of the fifth lens and a curvature radius R10 of the image-side surface of the fifth lens satisfy: -3.37≤R9 / R10≤-2.

86.

2. The optical imaging lens according to claim 1, wherein: The sum of the center thicknesses ΣCT of the first lens to the sixth lens on the optical axis and the sum of the spacing distances ΣAT of any two adjacent lenses from the first lens to the sixth lens on the optical axis satisfy: 0.42<∑AT / ∑CT<0.

47.

3. The optical imaging lens according to claim 1, wherein: The effective focal length f1 of the first lens and the distance TTL from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis satisfy: 1.30<TTL / f1≤1.

42.

4. The optical imaging lens according to claim 1, wherein: The distance T12 between the first lens and the second lens on the optical axis, the distance T23 between the second lens and the third lens on the optical axis, the distance T34 between the third lens and the fourth lens on the optical axis, and the distance T45 between the fourth lens and the fifth lens on the optical axis satisfy: 0.95<(T23+T34) / (T12+T45)<1.

35.

5. The optical imaging lens according to claim 1, wherein: The effective focal length f5 of the fifth lens and the effective focal length f6 of the sixth lens satisfy: 0.86<|f5 / f6|<1.

20.

6. The optical imaging lens according to any one of claims 1 to 5, characterized in that: The center thickness CT5 of the fifth lens on the optical axis and the center thickness CT6 of the sixth lens on the optical axis satisfy: 0.50≤CT6 / CT5≤0.

67.

7. The optical imaging lens according to any one of claims 1 to 5, characterized in that: The center thickness CT6 of the sixth lens on the optical axis and the edge thickness ET6 of the sixth lens satisfy: 0.35<CT6 / ET6≤0.72.

Images