Camera lens

Abstract

The application discloses a camera lens, which comprises, in sequence from the object side to the image side along the optical axis, a first lens with positive refractive power, the object side of which is convex; a second lens with negative refractive power, the object side of which is convex and the image side of which is concave; a third lens with refractive power; a fourth lens with refractive power; a fifth lens with refractive power; a sixth lens with positive refractive power, the object side of which is convex and the image side of which is convex; and a seventh lens with negative refractive power, the object side of which is convex and the image side of which is concave; wherein the number of lenses with refractive power in the camera lens is seven; and the interval distance T56 of the fifth lens and the sixth lens on the optical axis and the interval distance T67 of the sixth lens and the seventh lens on the optical axis satisfy 1.5 < T56 / T67 < 3.2.

Description

[0001] Divisional Application Declaration

[0002] This application is a divisional application of the application for Chinese Patent Application No. 201711007882.4, filed on October 25, 2017, entitled "Camera Lens", which claims priority to the Chinese Patent Application No. 201710997593.7, filed on October 25, 2017, entitled "Camera Lens". TECHNICAL FIELD

[0003] The present application relates to a camera lens, and more particularly, to a camera lens including seven lenses. BACKGROUND

[0004] With the improvement of the performance and the reduction of the size of a commonly used photosensitive element such as a charge-coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS), the number of pixels of the photosensitive element is increased and the size of the pixel is reduced, thereby putting forward higher requirements for the high imaging quality and the miniaturization of the camera lens matched with the photosensitive element.

[0005] The reduction of the size of the pixel means that the light quantity of the lens will be reduced in the same exposure time. However, in the condition of dim environment, the lens needs to have a large light quantity to ensure the imaging quality. The existing lens is usually configured with an aperture number Fno (total effective focal length of the lens / diameter of the entrance pupil of the lens) of 2.0 or above. Such a lens can meet the requirement of miniaturization, but cannot guarantee the imaging quality of the lens in the case of insufficient light (such as overcast day, dusk, etc.), hand shake, etc. Therefore, the lens with the aperture number Fno of 2.0 or above cannot meet the higher imaging requirements. SUMMARY

[0006] The present application provides a camera lens, for example, a large-aperture camera lens, which can be applied to portable electronic products and can at least solve or partially solve at least one of the above-mentioned disadvantages in the prior art.

[0007] In one aspect, the present application provides a camera lens, which includes, in order from the object side to the image side along the optical axis, a first lens having positive refractive power; a second lens having negative refractive power; a third lens having refractive power; a fourth lens having refractive power; a fifth lens having refractive power; a sixth lens having refractive power, the object side surface of which can be convex, and the image side surface of which can be convex; and a seventh lens having negative refractive power, the object side surface of which can be convex. Wherein the effective focal length of the second lens and the total effective focal length f of the camera lens can satisfy -3≤f2 / f<-1.5.

[0008] In one embodiment, the total effective focal length f of the camera lens and the diameter EPD of the entrance pupil of the camera lens can satisfy f / EPD<2.0.

[0009] In an embodiment, the total effective focal length f of the camera lens, the effective focal length f1 of the first lens, and the effective focal length f2 of the second lens can satisfy 1<|f / f1|+|f / f2|<1.55.

[0010] In an embodiment, the radius of curvature R2 of the image side surface of the first lens and the effective focal length f1 of the first lens can satisfy 1.3

[0011] In an embodiment, the sixth lens can have positive refractive power; the effective focal length f6 of the sixth lens and the total track length TTL of the camera lens can satisfy 0.6

[0012] In an embodiment, the effective focal length f7 of the seventh lens and the central thickness CT7 of the seventh lens on the optical axis can satisfy -5

[0013] In an embodiment, the object side surface of the first lens can be convex; the total effective focal length f of the camera lens and the radius of curvature R1 of the object side surface of the first lens can satisfy 2

[0014] In an embodiment, the radius of curvature R1 of the object side surface of the first lens and the radius of curvature R14 of the image side surface of the seventh lens can satisfy 1

[0015] In an embodiment, the effective half aperture diameter DT11 of the object side surface of the first lens and the effective half aperture diameter DT51 of the object side surface of the fifth lens can satisfy 0.8

[0016] In an embodiment, the distance SAG71 from the intersection of the object side surface of the seventh lens and the optical axis to the effective half aperture vertex of the object side surface of the seventh lens on the optical axis and the central thickness CT7 of the seventh lens on the optical axis can satisfy -0.5

[0017] In an embodiment, the total track length TTL of the camera lens and the half diagonal length ImgH of the effective pixel area on the imaging surface of the camera lens can satisfy TTL / ImgH<1.65.

[0018] In an embodiment, the central thickness CT3 of the third lens on the optical axis and the central thickness CT4 of the fourth lens on the optical axis can satisfy 1

[0019] In an embodiment, the central thickness CT4 of the fourth lens on the optical axis and the central thickness CT5 of the fifth lens on the optical axis can satisfy CT4 / CT5≤1.

[0020] In one embodiment, the interval distance T56 of the fifth lens and the sixth lens on the optical axis and the interval distance T67 of the sixth lens and the seventh lens on the optical axis can satisfy 1.5 < T56 / T67 < 3.2.

[0021] In another aspect, the present application provides a camera lens which comprises, in order from the object side to the image side along the optical axis, a first lens with positive refractive power; a second lens with negative refractive power; a third lens with refractive power; a fourth lens with refractive power; a fifth lens with refractive power; a sixth lens with refractive power, the object side surface of which can be convex, and the image side surface of which can be convex; and a seventh lens with negative refractive power, the object side surface of which can be convex. Wherein the total effective focal length f of the camera lens, the effective focal length f1 of the first lens and the effective focal length f2 of the second lens can satisfy 1 < |f / f1| + |f / f2| < 1.55.

[0022] In another aspect, the present application provides a camera lens which comprises, in order from the object side to the image side along the optical axis, a first lens with positive refractive power; a second lens with negative refractive power; a third lens with refractive power; a fourth lens with refractive power; a fifth lens with refractive power; a sixth lens with refractive power, the object side surface of which can be convex, and the image side surface of which can be convex; and a seventh lens with negative refractive power, the object side surface of which can be convex. Wherein the total effective focal length f of the camera lens, the effective focal length f1 of the first lens and the effective focal length f2 of the second lens can satisfy 1 < |f / f1| + |f / f2| < 1.55.

[0023] In another aspect, the present application provides a camera lens which comprises, in order from the object side to the image side along the optical axis, a first lens with positive refractive power; a second lens with negative refractive power; a third lens with refractive power; a fourth lens with refractive power; a fifth lens with refractive power; a sixth lens with refractive power, the object side surface of which can be convex, and the image side surface of which can be convex; and a seventh lens with negative refractive power, the object side surface of which can be convex. Wherein the total effective focal length f of the camera lens, the effective focal length f1 of the first lens and the effective focal length f2 of the second lens can satisfy 1 < |f / f1| + |f / f2| < 1.55.

[0024] In another aspect, the present application provides a camera lens which comprises, in order from the object side to the image side along the optical axis, a first lens with positive refractive power; a second lens with negative refractive power; a third lens with refractive power; a fourth lens with refractive power; a fifth lens with refractive power; a sixth lens with refractive power, the object side surface of which can be convex, and the image side surface of which can be convex; and a seventh lens with negative refractive power, the object side surface of which can be convex. Wherein the total effective focal length f of the camera lens, the effective focal length f1 of the first lens and the effective focal length f2 of the second lens can satisfy 1 < |f / f1| + |f / f2| < 1.55.

[0025] In yet another aspect, the present application also provides a camera lens, which includes, in order from the object side to the image side along the optical axis, a first lens having positive refractive power; a second lens having negative refractive power; a third lens having refractive power; a fourth lens having refractive power; a fifth lens having refractive power; a sixth lens having refractive power, the object side surface of which can be convex, and the image side surface of which can be convex; and a seventh lens having negative refractive power, the object side surface of which can be convex. Wherein the interval distance T56 of the fifth lens and the sixth lens on the optical axis and the interval distance T67 of the sixth lens and the seventh lens on the optical axis can satisfy 1.5 < T56 / T67 < 3.2.

[0026] In yet another aspect, the present application also provides a camera lens, which includes, in order from the object side to the image side along the optical axis, a first lens having positive refractive power; a second lens having negative refractive power; a third lens having refractive power; a fourth lens having refractive power; a fifth lens having refractive power; a sixth lens having refractive power, the object side surface of which can be convex, and the image side surface of which can be convex; and a seventh lens having negative refractive power, the object side surface of which can be convex. Wherein the effective half aperture diameter DT11 of the object side surface of the first lens and the effective half aperture diameter DT51 of the object side surface of the fifth lens can satisfy 0.8 < DT11 / DT51 < 1.2.

[0027] In yet another aspect, the present application also provides a camera lens, which includes, in order from the object side to the image side along the optical axis, a first lens having positive refractive power; a second lens having negative refractive power; a third lens having refractive power; a fourth lens having refractive power; a fifth lens having refractive power; a sixth lens having refractive power, the object side surface of which can be convex, and the image side surface of which can be convex; and a seventh lens having negative refractive power, the object side surface of which can be convex. Wherein the interval distance T56 of the fifth lens and the sixth lens on the optical axis and the interval distance T67 of the sixth lens and the seventh lens on the optical axis can satisfy 1.5 < T56 / T67 < 3.2.

[0028] The present application adopts multiple lenses (for example, seven lenses), and by reasonably allocating the refractive power, surface shape, central thickness of each lens, and axial interval distance between lenses, etc., the camera lens has at least one of the following beneficial effects: ultra-thin, miniaturization, large aperture, high imaging quality, etc. BRIEF DESCRIPTION OF DRAWINGS

[0029] Other features, objects, and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments, taken in conjunction with the accompanying drawings. In the drawings:

[0030] Figure 1 A structure schematic diagram of a camera lens according to the embodiment 1 of the present application is shown;

[0031] Figures 2A to 2D The on-axis chromatic aberration curve, the astigmatism curve, the distortion curve and the lateral chromatic aberration curve of the camera lens of Embodiment 1 are shown respectively;

[0032] Figure 3 The structural schematic diagram of the camera lens according to Embodiment 2 of the application is shown;

[0033] Figures 4A to 4D The on-axis chromatic aberration curve, the astigmatism curve, the distortion curve and the lateral chromatic aberration curve of the camera lens of Embodiment 2 are shown respectively;

[0034] Figure 5 The structural schematic diagram of the camera lens according to Embodiment 3 of the application is shown;

[0035] Figures 6A to 6D The on-axis chromatic aberration curve, the astigmatism curve, the distortion curve and the lateral chromatic aberration curve of the camera lens of Embodiment 3 are shown respectively;

[0036] Figure 7 The structural schematic diagram of the camera lens according to Embodiment 4 of the application is shown;

[0037] Figures 8A to 8D The on-axis chromatic aberration curve, the astigmatism curve, the distortion curve and the lateral chromatic aberration curve of the camera lens of Embodiment 4 are shown respectively;

[0038] Figure 9 The structural schematic diagram of the camera lens according to Embodiment 5 of the application is shown;

[0039] Figures 10A to 10D The on-axis chromatic aberration curve, the astigmatism curve, the distortion curve and the lateral chromatic aberration curve of the camera lens of Embodiment 5 are shown respectively;

[0040] Figure 11 The structural schematic diagram of the camera lens according to Embodiment 6 of the application is shown;

[0041] Figures 12A to 12D The on-axis chromatic aberration curve, the astigmatism curve, the distortion curve and the lateral chromatic aberration curve of the camera lens of Embodiment 6 are shown respectively;

[0042] Figure 13 The structural schematic diagram of the camera lens according to Embodiment 7 of the application is shown;

[0043] Figures 14A to 14D The on-axis chromatic aberration curve, the astigmatism curve, the distortion curve and the lateral chromatic aberration curve of the camera lens of Embodiment 7 are shown respectively;

[0044] Figure 15 The structural schematic diagram of the camera lens according to Embodiment 8 of the application is shown;

[0045] Figures 16A to 16D On-axis aberration curves, astigmatism curves, distortion curves, and lateral chromatic aberration curves of the camera lens of Example 8 are shown, respectively. DETAILED DESCRIPTION

[0046] For a better understanding of the present application, various aspects of the present application will be described in greater detail below with reference to the accompanying drawings. It is to be noted that these detailed descriptions are merely descriptive of exemplary embodiments of the present application and are not intended in any way to limit the scope of the present application. Throughout the specification, like drawing reference numerals refer to like elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0047] It should be noted that the expressions first, second, third, etc. in the present specification are merely used to distinguish one feature from another feature, and do not represent any limitation on the features. Thus, the first lens discussed below can also be referred to as the second lens or the third lens without departing from the teachings of the present application.

[0048] In the drawings, the thickness, size, and shape of lenses have been slightly exaggerated for the sake of convenience in explanation. Specifically, the shape of a spherical surface or an aspherical surface shown in the drawings is shown by way of example. That is, the shape of a spherical surface or an aspherical surface is not limited to the shape of a spherical surface or an aspherical surface shown in the drawings. The drawings are merely examples and are not drawn strictly to scale.

[0049] In the present specification, the paraxial region refers to a region near the optical axis. If a lens surface is convex and the position of the convex surface is not specified, it means that the lens surface is convex at least in the paraxial region. If a lens surface is concave and the position of the concave surface is not specified, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object is referred to as the object side surface, and the surface of each lens closest to the imaging plane is referred to as the image side surface.

[0050] It should also be understood that the words "comprise", "comprising", "include", "including", and / or "contain", when used in this specification, signify the presence of the stated features, elements, and / or components but do not preclude the presence or addition of one or more other features, elements, components, and / or groups thereof. Furthermore, when describing the embodiments of the present application, the use of "can", "might", or "may" indicates that one or more embodiments of the present application so described are among possible embodiments. Also, the word "exemplary" is used herein to mean "serving as an example, instance, or illustration". At the very least, therefore, the word "exemplary" is not used herein to mean "ideal" or "preferred" to the exclusion of other embodiments.

[0051] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an overly literal or overly formal sense unless expressly so defined herein.

[0052] It should be noted that the embodiments and features of the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0053] The features, principles, and other aspects of the present application are described in detail below.

[0054] The camera lens according to the exemplary embodiments of the present application can include, for example, seven lenses having optical power, i.e., a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The seven lenses are arranged in order from an object side to an image side along an optical axis.

[0055] In the exemplary embodiments, the camera lens of the present application can satisfy a condition formula f / EPD < 2.0, where f is a total effective focal length of the camera lens, and EPD is an entrance pupil diameter of the camera lens. More specifically, f and EPD can further satisfy 1.51 ≤ f / EPD ≤ 1.87. The smaller the ratio of the total effective focal length f of the camera lens to the entrance pupil diameter EPD, the larger the light aperture of the lens, and the more light can be admitted in the same unit of time. Configuring the lens to satisfy the condition formula f / EPD < 2.0 can enable the lens to have the advantage of a large aperture, thereby increasing the amount of light admitted by the system and enhancing the imaging effect in a dark environment.

[0056] In the exemplary embodiments, the camera lens of the present application can satisfy a condition formula -3 ≤ f2 / f < -1.5, where f2 is an effective focal length of the second lens, and f is a total effective focal length of the camera lens. More specifically, f2 and f can further satisfy -3 ≤ f2 / f ≤ -2.1, for example, -2.97 ≤ f2 / f ≤ -2.19. Reasonably distributing the optical power of the second lens can effectively shorten the total optical length of the lens and ensure the ultra-thin characteristics of the lens.

[0057] In exemplary embodiments, the camera lens of the present application can satisfy the condition formula 1<|f / f1|+|f / f2|<1.55, where f is the total effective focal length of the camera lens, f1 is the effective focal length of the first lens, and f2 is the effective focal length of the second lens. More specifically, f, f1 and f2 can further satisfy 1.20<|f / f1|+|f / f2|<1.55, for example, 1.25≤|f / f1|+|f / f2|≤1.51. Reasonably distributing the refractive power of the first lens and the second lens can reduce the optical deflection angle, thereby reducing the sensitivity of the imaging system.

[0058] In exemplary embodiments, the camera lens of the present application can satisfy the condition formula 0.6

[0059] In exemplary embodiments, the camera lens of the present application can satisfy the condition formula TTL / ImgH<1.65, where TTL is the total optical length of the camera lens, and ImgH is half of the diagonal length of the effective pixel area on the imaging surface of the camera lens. More specifically, TTL and ImgH can further satisfy 1.37≤TTL / ImgH≤1.54. Satisfying the condition formula TTL / ImgH<1.65 can effectively compress the size of the imaging system, ensuring the miniaturization of the lens.

[0060] In exemplary embodiments, the camera lens of the present application can satisfy the condition formula 2

[0061] In exemplary embodiments, the camera lens of the present application can satisfy the condition formula 1.3

[0062] In exemplary embodiments, the camera lens of the present application can satisfy the condition formula 1 < R1 / R14 < 1.5, wherein R1 is the curvature radius of the object side surface of the first lens, and R14 is the curvature radius of the image side surface of the seventh lens. More specifically, R1 and R14 can further satisfy 1.10 ≤ R1 / R14 < 1.40, for example, 1.10 ≤ R1 / R14 ≤ 1.31. Reasonably controlling the ratio of R1 and R14 can effectively balance the aberration of the imaging system.

[0063] In exemplary embodiments, the camera lens of the present application can satisfy the condition formula -5 < f7 / CT7 < -4, wherein f7 is the effective focal length of the seventh lens, and CT7 is the central thickness of the seventh lens on the optical axis. More specifically, f7 and CT7 can further satisfy -4.6 < f7 / CT7 < -4.3, for example, -4.55 ≤ f7 / CT7 ≤ -4.35. Reasonably controlling the ratio of f7 and CT7 can effectively reduce the rear end size of the imaging system.

[0064] In exemplary embodiments, the camera lens of the present application can satisfy the condition formula 1 < CT3 / CT4 < 1.5, wherein CT3 is the central thickness of the third lens on the optical axis, and CT4 is the central thickness of the fourth lens on the optical axis. More specifically, CT3 and CT4 can further satisfy 1.1 < CT3 / CT4 < 1.4, for example, 1.14 ≤ CT3 / CT4 ≤ 1.37. Reasonably controlling the central thickness of the third lens and the fourth lens can ensure the machinability of the third lens and the spherical aberration contribution rate of the fourth lens, so that the on-axis field region of the imaging system has good imaging quality.

[0065] In exemplary embodiments, the camera lens of the present application can satisfy the condition formula 1.5 < T56 / T67 < 3.2, wherein T56 is the interval distance of the fifth lens and the sixth lens on the optical axis, and T67 is the interval distance of the sixth lens and the seventh lens on the optical axis. More specifically, T56 and T67 can further satisfy 1.9 < T56 / T67 < 3.2, for example, 1.91 ≤ T56 / T67 ≤ 3.11. Reasonably controlling the on-axis interval distance of the fifth lens, the sixth lens and the seventh lens is conducive to ensuring that the imaging system has good machining gap, and is conducive to ensuring that the imaging system has good light path deflection.

[0066] In exemplary embodiments, the camera lens of the present application can satisfy the condition CT4 / CT5≤1, where CT4 is the center thickness of the fourth lens on the optical axis, and CT5 is the center thickness of the fifth lens on the optical axis. More specifically, CT4 and CT5 can further satisfy 0<CT4 / CT5≤1, and more specifically, CT4 and CT5 can satisfy 0.50≤CT4 / CT5≤1, for example, 0.50≤CT4 / CT5≤0.99. Reasonably controlling the center thickness of the fourth lens and the fifth lens can ensure the machinability of the fourth lens and the contribution rate of the spherical aberration of the fifth lens, so that the on-axis field region of the imaging system has good imaging quality.

[0067] In exemplary embodiments, the camera lens of the present application can satisfy the condition 0.8<DT11 / DT51<1.2, where DT11 is the effective half aperture of the object side of the first lens, and DT51 is the effective half aperture of the object side of the fifth lens. More specifically, DT11 and DT51 can further satisfy 0.9<DT11 / DT51<1.1, for example, 0.97≤DT11 / DT51≤1.05. By reasonably controlling the effective half aperture of the object side of the first lens and the fifth lens, the deflection angle of the edge field at the first lens and the fifth lens can be reasonably controlled, and thus the sensitivity of the imaging system can be effectively reduced.

[0068] In exemplary embodiments, the camera lens of the present application can satisfy the condition -0.5<SAG71 / CT7<0, where SAG71 is the distance from the intersection of the object side of the seventh lens and the optical axis to the effective half aperture vertex of the object side of the seventh lens on the optical axis, and CT7 is the center thickness of the seventh lens on the optical axis. More specifically, SAG71 and CT7 can further satisfy -0.5<SAG71 / CT7<-0.1, for example, -0.45≤SAG71 / CT7≤-0.19. By reasonably controlling the ratio of SAG71 and CT7, the third-order coma of the seventh lens can be controlled within a reasonable range, so that the coma generated by the seventh lens can balance the coma amount generated by the front lenses (i.e., the lenses from the object side to the seventh lens), thereby making the imaging system have good imaging quality.

[0069] In exemplary embodiments, the camera lens can further include at least one diaphragm to improve the imaging quality of the lens. The diaphragm can be disposed at any position between the object side and the image side as needed, for example, the diaphragm can be disposed between the first lens and the second lens.

[0070] Optionally, the above-mentioned camera lens can further include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive elements located on the imaging surface.

[0071] The camera lens according to the above-mentioned embodiments of the present application can adopt multiple lenses, for example, seven lenses as described above. By reasonably allocating the optical power, surface shape, central thickness of each lens, and axial distance between lenses, etc., the volume of the lens can be effectively reduced, the sensitivity of the lens can be reduced, and the processability of the lens can be improved, so that the camera lens is more conducive to production and processing and can be applied to portable electronic products. At the same time, the camera lens configured as described above also has beneficial effects such as thinness, miniaturization, large aperture, high imaging quality, etc.

[0072] In the embodiments of the present application, at least one of the mirror surfaces of each lens is a non-spherical mirror surface. The characteristic of a non-spherical lens is that the curvature changes continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens which has a constant curvature from the center of the lens to the periphery of the lens, a non-spherical lens has better curvature radius characteristics, has the advantages of improving distortion aberration and improving astigmatism aberration. After using a non-spherical lens, aberration that occurs during imaging can be eliminated as much as possible, thereby improving the imaging quality.

[0073] However, those skilled in the art should understand that the number of lenses constituting the camera lens can be changed without departing from the technical solutions claimed by the present application, to obtain the various results and advantages described in the present specification. For example, although seven lenses are described as an example in the embodiments, the camera lens is not limited to including seven lenses. If necessary, the camera lens can also include other numbers of lenses.

[0074] The specific embodiments of the camera lens applicable to the above-mentioned embodiments are further described below with reference to the accompanying drawings.

[0075] Example 1

[0076] The following refers to Figures 1 to 2D A camera lens according to Embodiment 1 of the present application is described. Figure 1 A structural schematic diagram of the camera lens according to Embodiment 1 of the present application is shown.

[0077] As Figure 1 shown, the camera lens according to the exemplary embodiments of the present application sequentially includes, along the optical axis from the object side to the image side: a first lens L1, a stop STO, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter L8, and an imaging surface S17.

[0078] The first lens L1 has positive refractive power, the object side S1 is a convex surface, and the image side S2 is a concave surface; the second lens L2 has negative refractive power, the object side S3 is a convex surface, and the image side S4 is a concave surface; the third lens L3 has positive refractive power, the object side S5 is a convex surface, and the image side S6 is a concave surface; the fourth lens L4 has negative refractive power, the object side S7 is a convex surface, and the image side S8 is a concave surface; the fifth lens L5 has positive refractive power, the object side S9 is a convex surface, and the image side S10 is a concave surface; the sixth lens L6 has positive refractive power, the object side S11 is a convex surface, and the image side S12 is a convex surface; and the seventh lens L7 has negative refractive power, the object side S13 is a convex surface, and the image side S14 is a concave surface. The filter L8 has an object side S15 and an image side S16. Light from an object sequentially passes through the surfaces S1 to S16 and is finally imaged on the imaging surface S17.

[0079] Table 1 shows the surface type, radius of curvature, thickness, material, and conic constant of each lens of the camera lens of Example 1, wherein the units of the radius of curvature and the thickness are millimeters (mm).

[0080]

[0081] Table 1

[0082] As can be seen from Table 1, the object side and the image side of any one of the first lens L1 to the seventh lens L7 are aspherical surfaces. In this embodiment, the surface type x of each aspherical lens can be defined by, but is not limited to, the following aspherical surface formula:

[0083]

[0084] wherein x is the sag of the aspherical surface at a height h along the optical axis, c is the paraxial curvature of the aspherical surface, c = 1 / R (i.e., the paraxial curvature c is the inverse of the radius of curvature R in Table 1), k is the conic constant (given in Table 1), and Ai is the correction coefficient of the i-th order of the aspherical surface. Table 2 gives the high-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28, A30, A32, A34, A36, A38, A40, A42, A44, A46, A48, A50, A52, A54, A56, A58, A60, A62, A64, A66, A68, A70, A72, A74, A76, A78, A80, A82, A84, A86, A88, A90, A92, A94, A96, A98, and A100 that can be used for each aspherical surface S1-S14 in Example 1. 10 12 14 16 18 20

[0085] Face No. A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -3.2510E-02 2.7649E-01 -1.1950E+00 2.9877E+00 -4.6362E+00 4.4974E+00 -2.6599E+00 8.7574E-01 -1.2323E-01 S2 -4.2699E-02 -5.2153E-01 3.6451E+00 -1.2234E+01 2.4201E+01 -2.9422E+01 2.1581E+01 -8.7654E+00 1.5141E+00 S3 -2.0269E-01 1.0594E+00 -5.6930E+00 2.0993E+01 -4.8444E+01 6.9649E+01 -6.0599E+01 2.9193E+01 -5.9756E+00 S4 -2.6261E-02 -8.8568E-01 8.4026E+00 -3.8786E+01 1.0835E+02 -1.8811E+02 1.9826E+02 -1.1609E+02 2.8978E+01 S5 -5.1076E-02 1.0895E+00 -8.6595E+00 3.7846E+01 -1.0212E+02 1.7180E+02 -1.7598E+02 1.0054E+02 -2.4538E+01 S6 -1.2113E-01 6.2936E-01 -3.5422E+00 1.2074E+01 -2.7558E+01 4.1451E+01 -3.9979E+01 2.2573E+01 -5.6093E+00 S7 -2.8963E-01 1.5154E+00 -7.2490E+00 2.0903E+01 -3.8121E+01 4.3966E+01 -3.1651E+01 1.3359E+01 -2.5698E+00 S8 -6.2172E-01 2.7484E+00 -9.8942E+00 2.3201E+01 -3.5125E+01 3.3444E+01 -1.9163E+01 5.9476E+00 -7.4437E-01 S9 6.7447E-03 -8.1883E-01 2.6274E+00 -4.9504E+00 6.3252E+00 -5.4795E+00 2.9656E+00 -8.7877E-01 1.0730E-01 S10 -7.0290E-02 -2.4344E-01 4.9701E-01 -5.2363E-01 5.3066E-01 -5.3210E-01 3.4405E-01 -1.1352E-01 1.4655E-02 S11 5.3341E-02 1.1931E-01 -3.8251E-01 2.9748E-01 -5.1412E-02 -8.9953E-02 7.6338E-02 -2.5020E-02 3.0989E-03 S12 3.7899E-02 4.0393E-01 -6.7321E-01 5.1170E-01 -2.2628E-01 6.1508E-02 -1.0192E-02 9.4969E-04 -3.8218E-05 S13 -4.5666E-02 -1.2536E-01 2.0002E-01 -1.1851E-01 3.7082E-02 -6.6831E-03 6.9106E-04 -3.7373E-05 7.8434E-07 S14 -1.1549E-01 5.8679E-02 -2.8312E-02 1.2142E-02 -4.4883E-03 1.1728E-03 -1.8695E-04 1.6097E-05 -5.7253E-07

[0086] Table 2

[0087] ​​​​​​Table 3 gives the total effective focal length f of the camera lens, the effective focal lengths f1 to f7 of the respective lenses, the optical total track length TTL of the camera lens (i.e. the distance on the optical axis from the center of the object side surface S1 of the first lens L1 to the imaging surface S17), and half of the diagonal length of the effective pixel area on the imaging surface S17 in Example 1.

[0088] Parameter f (mm) f1 (mm) f2 (mm) f3 (mm) f4 (mm) Value 3.33 3.89 -8.56 15.59 -35.36 Parameter f5 (mm) f6 (mm) f7 (mm) TTL (mm) ImgH (mm) Value 19.56 3.50 -2.91 4.50 2.93

[0089] Table 3

[0090] The camera lens in Example 1 satisfies:

[0091] f / EPD = 1.51, where f is the total effective focal length of the camera lens, and EPD is the entrance pupil diameter of the camera lens;

[0092] f2 / f = -2.57, where f2 is the effective focal length of the second lens L2, and f is the total effective focal length of the camera lens;

[0093] |f / f1| + |f / f2| = 1.25, where f is the total effective focal length of the camera lens, f1 is the effective focal length of the first lens L1, and f2 is the effective focal length of the second lens L2;

[0094] f6 / TTL = 0.78, where f6 is the effective focal length of the sixth lens L6, and TTL is the optical total track length of the camera lens;

[0095] TTL / ImgH = 1.54, where TTL is the optical total track length of the camera lens, and ImgH is half of the diagonal length of the effective pixel area on the imaging surface S17;

[0096] f / R1 = 2.06, where f is the total effective focal length of the camera lens, and R1 is the radius of curvature of the object side surface S1 of the first lens L1;

[0097] R2 / f1 = 1.50, where R2 is the radius of curvature of the image side surface S2 of the first lens L1, and f1 is the effective focal length of the first lens L1;

[0098] R1 / R14 = 1.10, where R1 is the radius of curvature of the object side surface S1 of the first lens L1, and R14 is the radius of curvature of the image side surface S14 of the seventh lens L7;

[0099] f7 / CT7 = -4.55, where f7 is the effective focal length of the seventh lens L7, and CT7 is the center thickness of the seventh lens L7 on the optical axis;

[0100] CT3 / CT4 = 1.14, where CT3 is the center thickness of the third lens L3 on the optical axis, and CT4 is the center thickness of the fourth lens L4 on the optical axis;

[0101] T56 / T67 = 2.18, where T56 is the interval distance on the optical axis between the fifth lens L5 and the sixth lens L6, and T67 is the interval distance on the optical axis between the sixth lens L6 and the seventh lens L7;

[0102] CT4 / CT5 = 0.99, where CT4 is the central thickness on the optical axis of the fourth lens L4, and CT5 is the central thickness on the optical axis of the fifth lens L5;

[0103] DT11 / DT51 = 1.00, where DT11 is the effective half aperture radius of the object side S1 of the first lens L1, and DT51 is the effective half aperture radius of the object side S9 of the fifth lens L5;

[0104] SAG71 / CT7 = -0.19, where SAG71 is the distance on the optical axis from the intersection of the object side S13 of the seventh lens L7 and the optical axis to the effective half aperture radius vertex of the object side S13 of the seventh lens L7, and CT7 is the central thickness on the optical axis of the seventh lens L7.

[0105] Figure 2A An axial chromatic aberration curve of the camera lens of Example 1 is shown, which represents the convergence point deviation of light rays of different wavelengths after passing through the lens. Figure 2B An astigmatism curve of the camera lens of Example 1 is shown, which represents the meridional image surface curvature and sagittal image surface curvature. Figure 2C A distortion curve of the camera lens of Example 1 is shown, which represents the distortion size value at different view angles. Figure 2D A rate of change of magnification curve of the camera lens of Example 1 is shown, which represents the deviation of the image height of light rays on the imaging surface after passing through the lens. According to Figures 2A to 2D It can be seen that the camera lens of Example 1 can achieve good imaging quality.

[0106] Example 2

[0107] The following refers to Figures 3 to 4D A camera lens according to Example 2 of the present application is described. In this and the following examples, some similar descriptions as in Example 1 will be omitted for brevity. Figure 3 A structure schematic diagram of the camera lens according to Example 2 of the present application is shown.

[0108] As shown in Figure 3 The camera lens according to the exemplary embodiments of the present application sequentially includes, along the optical axis from the object side to the image side, a first lens L1, a stop STO, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter L8, and an imaging surface S17.

[0109] The first lens L1 has positive refractive power, the object side surface S1 is a convex surface, and the image side surface S2 is a concave surface; the second lens L2 has negative refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface; the third lens L3 has positive refractive power, the object side surface S5 is a convex surface, and the image side surface S6 is a concave surface; the fourth lens L4 has negative refractive power, the object side surface S7 is a convex surface, and the image side surface S8 is a concave surface; the fifth lens L5 has negative refractive power, the object side surface S9 is a convex surface, and the image side surface S10 is a concave surface; the sixth lens L6 has positive refractive power, the object side surface S11 is a convex surface, and the image side surface S12 is a convex surface; the seventh lens L7 has negative refractive power, the object side surface S13 is a convex surface, and the image side surface S14 is a concave surface. The filter L8 has an object side surface S15 and an image side surface S16. Light from an object passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0110] Table 4 shows the surface type, the radius of curvature, the thickness, the material and the conic constant of each lens of the camera lens of Example 2, wherein the units of the radius of curvature and the thickness are millimeter (mm).

[0111]

[0112]

[0113] Table 4

[0114] As shown in Table 4, in Example 2, the object side surface and the image side surface of any one of the first lens L1 to the seventh lens L7 are aspherical surfaces. Table 5 shows the high order term coefficients of the aspherical surfaces used in Example 2, wherein each aspherical surface can be defined by the formula (1) given in Example 1.

[0115] Face No. A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -1.3930E-02 1.2714E-01 -5.1925E-01 1.2275E+00 -1.8043E+00 1.6424E+00 -9.0159E-01 2.6848E-01 -3.3011E-02 S2 -5.6505E-02 -1.7634E-01 1.3081E+00 -4.2093E+00 7.9293E+00 -9.1646E+00 6.3562E+00 -2.4237E+00 3.9005E-01 S3 -1.6659E-01 4.1678E-01 -1.5096E+00 5.4679E+00 -1.2747E+01 1.8307E+01 -1.5731E+01 7.4238E+00 -1.4767E+00 S4 -3.8892E-02 -5.2915E-01 5.7519E+00 -2.8088E+01 8.3374E+01 -1.5413E+02 1.7297E+02 -1.0777E+02 2.8618E+01 S5 3.8886E-03 1.9758E-01 -2.2826E+00 1.0874E+01 -3.1706E+01 5.7209E+01 -6.2577E+01 3.8013E+01 -9.8046E+00 S6 -3.8996E-02 8.6322E-02 -1.1008E+00 5.5385E+00 -1.7730E+01 3.4625E+01 -4.0406E+01 2.5925E+01 -6.9715E+00 S7 -2.0249E-01 4.0417E-01 -2.3143E+00 8.5850E+00 -2.1305E+01 3.4109E+01 -3.4337E+01 1.9915E+01 -5.0068E+00 S8 -2.2043E-01 3.4174E-02 6.8110E-01 -3.4629E+00 8.7129E+00 -1.3417E+01 1.2462E+01 -6.3563E+00 1.3696E+00 S9 -1.4656E-01 -8.8763E-02 4.2818E-01 -6.8469E-01 7.0294E-01 -6.5986E-01 4.8562E-01 -2.1200E-01 4.0018E-02 S10 -9.2762E-02 -1.7742E-01 4.2695E-01 -4.7926E-01 3.7452E-01 -2.5014E-01 1.2912E-01 -3.8932E-02 4.8109E-03 S11 1.3903E-01 -1.7691E-01 6.6168E-02 -4.5795E-02 3.5943E-02 -1.3582E-02 6.3155E-05 1.3660E-03 -2.5829E-04 S12 8.1625E-02 2.4137E-01 -4.6845E-01 3.8114E-01 -1.8008E-01 5.2536E-02 -9.3893E-03 9.4866E-04 -4.1631E-05 S13 -1.1350E-01 5.6420E-02 1.9490E-02 -2.4697E-02 8.8729E-03 -1.6480E-03 1.7235E-04 -9.6759E-06 2.2795E-07 S14 -8.6430E-02 4.0138E-02 -1.2190E-02 1.1359E-03 4.9128E-04 -1.8384E-04 2.6278E-05 -1.7702E-06 4.6443E-08

[0116] Table 5

[0117] Table 6 shows the total effective focal length f of the camera lens, the effective focal lengths f1 to f7 of each lens, the total track length TTL of the camera lens, and half of the diagonal line length of the effective pixel area on the imaging surface S17 ImgH of Example 2.

[0118] Parameter f (mm) f1 (mm) f2 (mm) f3 (mm) f4 (mm) Value 3.80 3.75 -8.52 14.07 -111.75 Parameter f5 (mm) f6 (mm) f7 (mm) TTL (mm) ImgH (mm) Value -448.40 3.48 -2.46 4.69 3.41

[0119] Table 6

[0120] Figure 4A The axial chromatic aberration curve of the camera lens of Example 2 is shown, which represents the deviation of the converging focal points of light rays of different wavelengths after passing through the lens. Figure 4B The astigmatism curve of the camera lens of Example 2 is shown, which represents the meridional image surface curvature and the sagittal image surface curvature. Figure 4CThe distortion curve of the camera lens in Embodiment 2 is shown, which represents the distortion magnitude under different viewing angles. Figure 4D The magnification chromatic aberration curve of the camera lens in Embodiment 2 is shown, representing the deviation of different image heights on the imaging plane after light passes through the lens. According to... Figures 4A to 4D It can be seen that the camera lens given in Example 2 can achieve good imaging quality.

[0121] Example 3

[0122] The following is for reference Figures 5 to 6D A camera lens according to Embodiment 3 of this application is described. Figure 5 A schematic diagram of the structure of a camera lens according to Embodiment 3 of this application is shown.

[0123] like Figure 5 As shown, the camera lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: a first lens L1, an aperture stop STO, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter L8, and an imaging surface S17.

[0124] The first lens L1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens L2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens L3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens L4 has negative optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens L5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens L6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being convex. The seventh lens L7 has negative optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter L8 has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through each surface S1 to S16 and is finally imaged on the imaging surface S17.

[0125] Table 7 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the camera lens in Example 3, wherein the units for radius of curvature and thickness are millimeters (mm).

[0126]

[0127]

[0128] Table 7

[0129] As shown in Table 7, in the embodiment 3, the object side surface and the image side surface of any one of the first lens L1 to the seventh lens L7 are aspherical surfaces. Table 8 shows the high order term coefficients of the aspherical surfaces used in the embodiment 3, wherein each aspherical surface can be defined by the formula (1) given in the above embodiment 1.

[0130] Face No. A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -5.5911E-03 5.6993E-02 -2.2184E-01 4.8241E-01 -6.2517E-01 4.6334E-01 -1.7960E-01 2.4369E-02 1.4495E-03 S2 -6.3435E-02 -9.0401E-02 9.3071E-01 -3.3366E+00 6.9764E+00 -8.9958E+00 7.0024E+00 -3.0174E+00 5.5262E-01 S3 -1.3763E-01 2.4572E-01 -8.5397E-01 3.8156E+00 -1.0458E+01 1.7273E+01 -1.6993E+01 9.1935E+00 -2.1065E+00 S4 -4.8742E-02 -1.9081E-01 2.5148E+00 -1.1954E+01 3.5173E+01 -6.4942E+01 7.3052E+01 -4.5703E+01 1.2214E+01 S5 2.3251E-02 -4.8838E-02 -7.9351E-02 -1.0273E-01 1.4180E+00 -4.0717E+00 5.5824E+00 -3.8543E+00 1.1331E+00 S6 4.3942E-03 -9.5442E-02 3.1352E-02 6.7082E-01 -4.8760E+00 1.4057E+01 -2.0638E+01 1.5337E+01 -4.5289E+00 S7 -1.7407E-01 2.6241E-01 -1.8288E+00 7.5941E+00 -2.1063E+01 3.6953E+01 -3.9063E+01 2.2695E+01 -5.5302E+00 S8 -1.7192E-01 7.8399E-02 -6.1871E-02 -2.7147E-01 4.6371E-01 -1.2667E-01 -2.6332E-01 2.2955E-01 -5.5038E-02 S9 -1.2206E-01 -4.6193E-03 3.0401E-01 -8.8319E-01 1.4215E+00 -1.5788E+00 1.1469E+00 -4.7763E-01 8.5220E-02 S10 -1.1471E-01 -2.1695E-02 1.6498E-01 -2.4888E-01 2.1787E-01 -1.4256E-01 7.0661E-02 -2.1617E-02 2.8383E-03 S11 7.0700E-02 -7.5491E-02 -1.3111E-01 3.5891E-01 -5.3010E-01 4.6591E-01 -2.3929E-01 6.5971E-02 -7.5239E-03 S12 2.8159E-02 2.5744E-01 -4.0394E-01 2.8852E-01 -1.2267E-01 3.2691E-02 -5.4518E-03 5.3420E-04 -2.3988E-05 S13 -1.5745E-01 1.7350E-01 -8.9997E-02 2.6853E-02 -5.1141E-03 6.4778E-04 -5.3685E-05 2.6527E-06 -5.9242E-08 S14 -9.3938E-02 5.9791E-02 -2.8644E-02 9.2467E-03 -2.0062E-03 2.9246E-04 -2.7871E-05 1.5705E-06 -3.9248E-08

[0131] Table 8

[0132] Table 9 shows the total effective focal length f of the photographing lens, the effective focal lengths f1 to f7 of the lenses, the optical total track length TTL of the photographing lens, and the half of the diagonal line length of the effective pixel area on the imaging surface S17 ImgH in the embodiment 3.

[0133] Parameter f (mm) f1 (mm) f2 (mm) f3 (mm) f4 (mm) Value 3.95 3.76 -8.63 12.54 -44.52 Parameter f5 (mm) f6 (mm) f7 (mm) TTL (mm) ImgH (mm) Value -635.02 3.54 -2.43 4.76 3.41

[0134] Table 9

[0135] Figure 6A The axial chromatic aberration curve of the photographing lens in the embodiment 3 is shown, which represents the deviation of the convergent focal points of light rays with different wavelengths after passing through the lens. Figure 6B The astigmatism curve of the photographing lens in the embodiment 3 is shown, which represents the meridional image surface curvature and sagittal image surface curvature. Figure 6C The distortion curve of the photographing lens in the embodiment 3 is shown, which represents the distortion size value at different view angles. Figure 6D The relative illumination curve of the photographing lens in the embodiment 3 is shown, which represents the deviation of the light rays on the imaging surface after passing through the lens. According to the formula (2), the relative illumination curve of the photographing lens in the embodiment 3 is shown. Figures 6A to 6D It can be seen that the photographing lens given in the embodiment 3 can achieve good imaging quality.

[0136] Example 4

[0137] The photographing lens according to the embodiment 4 of the present application is described below with reference to the following drawings. Figures 7 to 8D The photographing lens according to the embodiment 4 of the present application is described below with reference to the following drawings. Figure 7 The structure schematic diagram of the photographing lens according to the embodiment 4 of the present application is shown.

[0138] As shown in Table 7, in the embodiment 3, the object side surface and the image side surface of any one of the first lens L1 to the seventh lens L7 are aspherical surfaces. Table 8 shows the high order term coefficients of the aspherical surfaces used in the embodiment 3, wherein each aspherical surface can be defined by the formula (1) given in the above embodiment 1. Figure 7

[0139] ​The first lens L1 has positive refractive power, the object side surface S1 is a convex surface, and the image side surface S2 is a concave surface; the second lens L2 has negative refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface; the third lens L3 has positive refractive power, the object side surface S5 is a convex surface, and the image side surface S6 is a concave surface; the fourth lens L4 has positive refractive power, the object side surface S7 is a convex surface, and the image side surface S8 is a convex surface; the fifth lens L5 has negative refractive power, the object side surface S9 is a concave surface, and the image side surface S10 is a concave surface; the sixth lens L6 has positive refractive power, the object side surface S11 is a convex surface, and the image side surface S12 is a convex surface; and the seventh lens L7 has negative refractive power, the object side surface S13 is a convex surface, and the image side surface S14 is a concave surface. The filter L8 has an object side surface S15 and an image side surface S16. Light from an object passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0140] Table 10 shows the surface type, the radius of curvature, the thickness, the material, and the conic constant of each lens of the camera lens of Example 4, wherein the units of the radius of curvature and the thickness are millimeter (mm).

[0141]

[0142]

[0143] Table 10

[0144] As shown in Table 10, in Example 4, the object side surface and the image side surface of any one of the first lens L1 to the seventh lens L7 are aspherical surfaces. Table 11 shows the high order term coefficients of the aspherical surfaces used in Example 4, wherein each aspherical surface can be defined by the formula (1) given in Example 1.

[0145] Face No. A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 4.8164E-03 -2.3021E-02 1.5498E-01 -5.4826E-01 1.0849E+00 -1.2909E+00 9.0825E-01 -3.5537E-01 5.9403E-02 S2 -6.7109E-02 -5.9848E-03 3.3427E-01 -1.0865E+00 1.8848E+00 -2.0491E+00 1.3803E+00 -5.2566E-01 8.6393E-02 S3 -1.6274E-01 4.3061E-01 -1.5606E+00 5.7849E+00 -1.4188E+01 2.1667E+01 -1.9921E+01 1.0137E+01 -2.1943E+00 S4 -8.0253E-02 1.9268E-01 -2.9574E-01 1.9083E+00 -8.0928E+00 1.8657E+01 -2.3920E+01 1.6203E+01 -4.4509E+00 S5 4.3668E-02 -2.5465E-01 5.5527E-01 -4.5213E-01 -3.6360E+00 1.4178E+01 -2.3633E+01 1.9568E+01 -6.4551E+00 S6 -4.0854E-02 -1.3633E-01 -5.7711E-02 2.0050E+00 -9.3998E+00 2.1534E+01 -2.7898E+01 1.9695E+01 -5.8570E+00 S7 -1.7580E-01 -1.0072E-01 -7.7022E-01 4.3459E+00 -1.0555E+01 1.4181E+01 -1.0959E+01 4.6754E+00 -8.6484E-01 S8 -9.4743E-02 -4.1414E-01 1.2227E+00 -3.3482E+00 8.1258E+00 -1.3764E+01 1.4259E+01 -8.1043E+00 1.9463E+00 S9 -9.5943E-02 -1.3867E-01 3.0293E-01 -3.3040E-01 5.4693E-01 -9.0943E-01 7.6990E-01 -2.9377E-01 4.0673E-02 S10 -1.0166E-01 -2.5258E-01 8.0035E-01 -1.6688E+00 2.6405E+00 -2.7590E+00 1.7221E+00 -5.7569E-01 7.9087E-02 S11 1.7030E-01 -2.9779E-01 3.4808E-01 -5.1913E-01 5.5585E-01 -3.7079E-01 1.4723E-01 -3.1691E-02 2.8361E-03 S12 1.4209E-01 1.4322E-01 -4.1090E-01 3.7819E-01 -1.9282E-01 5.9571E-02 -1.1178E-02 1.1808E-03 -5.4086E-05 S13 -8.6610E-02 -2.6839E-02 9.5674E-02 -5.7412E-02 1.5948E-02 -2.2970E-03 1.5882E-04 -2.9746E-06 -1.1248E-07 S14 -8.1591E-02 2.4774E-02 1.8591E-03 -5.6561E-03 2.5195E-03 -5.8048E-04 7.5661E-05 -5.2687E-06 1.5224E-07

[0146] Table 11

[0147] Table 12 shows the total effective focal length f of the camera lens, the effective focal lengths f1 to f7 of each lens, the total track length TTL of the camera lens, and half of the diagonal line length of the effective pixel area on the imaging surface S17 ImgH of Example 4.

[0148] Parameter f (mm) f1 (mm) f2 (mm) f3 (mm) f4 (mm) Value 3.74 3.64 -8.22 15.31 76.39 Parameter f5 (mm) f6 (mm) f7 (mm) TTL (mm) ImgH (mm) Value -43.13 3.15 -2.30 4.56 3.08

[0149] Table 12

[0150] Figure 8A The axial chromatic aberration curve of the camera lens of Example 4 is shown, which represents the deviation of the converging focal points of light rays of different wavelengths after passing through the lens. Figure 8B The astigmatism curve of the camera lens of Example 4 is shown, which represents the meridional image surface curvature and the sagittal image surface curvature. Figure 8CThe distortion curve of the camera lens in Example 4 is shown, which represents the distortion magnitude under different viewing angles. Figure 8D The magnification chromatic aberration curve of the camera lens in Embodiment 4 is shown, representing the deviation of different image heights on the imaging plane after light passes through the lens. According to... Figures 8A to 8D It can be seen that the camera lens given in Example 4 can achieve good imaging quality.

[0151] Example 5

[0152] The following is for reference Figures 9 to 10D A camera lens according to Embodiment 5 of this application is described. Figure 9 A schematic diagram of the structure of a camera lens according to Embodiment 5 of this application is shown.

[0153] like Figure 9 As shown, the camera lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: a first lens L1, an aperture stop STO, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter L8, and an imaging surface S17.

[0154] The first lens L1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens L2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens L3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens L4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens L5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being concave. The sixth lens L6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being convex. The seventh lens L7 has negative optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter L8 has an object-side surface S15 and an image-side surface S16. Light from the object passes sequentially through each surface S1 to S16 and is finally imaged on the imaging surface S17.

[0155] Table 13 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the camera lens in Example 5, wherein the units for radius of curvature and thickness are millimeters (mm).

[0156]

[0157]

[0158] Table 13

[0159] As shown in Table 13, in Embodiment 5, the object-side surface and image-side surface of any one of the lenses from the first lens L1 to the seventh lens L7 are aspherical. Table 14 shows the higher-order coefficients that can be used for each aspherical mirror surface in Embodiment 5, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0160] Face No. A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 6.0551E-04 3.0026E-02 -1.1089E-01 2.2595E-01 -2.6806E-01 1.5227E-01 -6.5149E-03 -3.9346E-02 1.3378E-02 S2 -5.2015E-02 -7.1564E-02 3.8739E-01 -9.9658E-01 1.6662E+00 -1.8460E+00 1.2664E+00 -4.8169E-01 7.7113E-02 S3 -1.1495E-01 3.2475E-02 1.7174E-01 1.1787E-01 -1.1378E+00 2.1560E+00 -2.0803E+00 1.0824E+00 -2.4113E-01 S4 -2.8264E-02 -1.9850E-01 1.8803E+00 -8.5804E+00 2.6411E+01 -5.2230E+01 6.3462E+01 -4.3093E+01 1.2619E+01 S5 3.0428E-02 -4.1536E-01 1.9552E+00 -9.4253E+00 2.9910E+01 -5.9589E+01 7.2047E+01 -4.8233E+01 1.3780E+01 S6 1.4904E-02 -5.5515E-01 2.4919E+00 -9.6007E+00 2.4377E+01 -3.9502E+01 3.9500E+01 -2.2203E+01 5.3444E+00 S7 -1.6130E-01 4.7353E-02 -2.0712E+00 1.0179E+01 -2.7196E+01 4.3871E+01 -4.1925E+01 2.1379E+01 -4.3400E+00 S8 -1.0893E-01 -2.3527E-01 3.3539E-01 -3.9584E-01 1.0267E+00 -2.0499E+00 2.2162E+00 -1.3147E+00 3.6598E-01 S9 -8.5152E-02 -1.6386E-01 4.5281E-01 -1.1069E+00 2.3641E+00 -3.2289E+00 2.5055E+00 -1.0116E+00 1.6667E-01 S10 -9.7417E-02 -1.5208E-01 4.2939E-01 -9.3997E-01 1.6612E+00 -1.8806E+00 1.2458E+00 -4.3945E-01 6.3755E-02 S11 1.4509E-01 -1.5861E-01 1.0665E-01 -2.0310E-01 2.4658E-01 -1.7022E-01 6.8455E-02 -1.4809E-02 1.3191E-03 S12 1.3331E-01 1.6545E-01 -3.8250E-01 2.9365E-01 -1.1728E-01 2.5184E-02 -2.5474E-03 4.5267E-05 7.0686E-06 S13 -1.0207E-01 2.6699E-02 6.4830E-03 1.9414E-02 -2.1403E-02 8.4021E-03 -1.6344E-03 1.5996E-04 -6.3221E-06 S14 -9.0439E-02 4.5947E-02 -2.1362E-02 8.8635E-03 -3.0540E-03 7.5309E-04 -1.1683E-04 9.9840E-06 -3.5534E-07

[0161] Table 14

[0162] Table 15 shows the total effective focal length f of the camera lens, the effective focal lengths f1 to f7 of each lens, the total optical length TTL of the camera lens, and half the diagonal length ImgH of the effective pixel area on the imaging surface S17 in Example 5.

[0163] Parameter f (mm) f1 (mm) f2 (mm) f3 (mm) f4 (mm) Value 3.75 3.58 -8.90 18.59 90.70 Parameter f5 (mm) f6 (mm) f7 (mm) TTL (mm) ImgH (mm) Value -75.56 3.19 -2.27 4.56 3.08

[0164] Table 15

[0165] Figure 10A The on-axis chromatic aberration curve of the camera lens of Embodiment 5 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 10B The astigmatism curve of the camera lens of Embodiment 5 is shown, which represents the curvature of the meridional image plane and the curvature of the sagittal image plane. Figure 10C The distortion curve of the camera lens in Example 5 is shown, which represents the distortion magnitude under different viewing angles. Figure 10D The magnification chromatic aberration curve of the camera lens in Embodiment 5 is shown, representing the deviation of different image heights on the imaging plane after light passes through the lens. According to... Figures 10A to 10D It can be seen that the camera lens given in Example 5 can achieve good imaging quality.

[0166] Example 6

[0167] The following is for reference Figures 11 to 12D A camera lens according to Embodiment 6 of this application is described. Figure 11 A schematic diagram of the structure of a camera lens according to Embodiment 6 of this application is shown.

[0168] like Figure 11 As shown, the camera lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: a first lens L1, an aperture stop STO, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter L8, and an imaging surface S17.

[0169] The first lens L1 has positive refractive power, the object side surface S1 is a convex surface, and the image side surface S2 is a concave surface; the second lens L2 has negative refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface; the third lens L3 has negative refractive power, the object side surface S5 is a concave surface, and the image side surface S6 is a concave surface; the fourth lens L4 has positive refractive power, the object side surface S7 is a convex surface, and the image side surface S8 is a convex surface; the fifth lens L5 has negative refractive power, the object side surface S9 is a concave surface, and the image side surface S10 is a concave surface; the sixth lens L6 has positive refractive power, the object side surface S11 is a convex surface, and the image side surface S12 is a convex surface; and the seventh lens L7 has negative refractive power, the object side surface S13 is a convex surface, and the image side surface S14 is a concave surface. The filter L8 has an object side surface S15 and an image side surface S16. Light from an object sequentially passes through the surfaces S1 to S16 and is finally imaged on the imaging surface S17.

[0170] Table 16 shows the surface type, the radius of curvature, the thickness, the material, and the conic constant of each lens of the camera lens of Example 6, wherein the units of the radius of curvature and the thickness are millimeter (mm).

[0171]

[0172]

[0173] Table 16

[0174] As shown in Table 16, in Example 6, the object side surface and the image side surface of any one of the first lens L1 to the seventh lens L7 are aspherical surfaces. Table 17 shows the high order term coefficients of the aspherical surfaces used in Example 6, wherein each aspherical surface can be defined by the formula (1) given in Example 1.

[0175] Face No. A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -9.7750E-04 4.0207E-02 -1.6732E-01 4.0534E-01 -6.2409E-01 5.9325E-01 -3.3700E-01 9.7385E-02 -1.0367E-02 S2 -5.1596E-02 -5.2802E-02 1.4964E-01 -1.0663E-01 -1.1388E-01 2.9461E-01 -2.7885E-01 1.3525E-01 -2.7625E-02 S3 -9.9317E-02 6.6921E-03 -2.2974E-02 1.0298E+00 -2.9027E+00 3.9373E+00 -2.9243E+00 1.1447E+00 -1.8395E-01 S4 -4.6002E-03 -2.2266E-01 1.6017E+00 -6.7565E+00 2.0360E+01 -3.9805E+01 4.7813E+01 -3.2071E+01 9.3116E+00 S5 5.0687E-02 -3.6169E-01 1.4000E+00 -6.2971E+00 1.9705E+01 -3.9078E+01 4.7041E+01 -3.1292E+01 8.8904E+00 S6 -8.3882E-03 -5.0086E-01 2.0204E+00 -7.0682E+00 1.6503E+01 -2.4771E+01 2.2834E+01 -1.1746E+01 2.5662E+00 S7 -1.7231E-01 -1.2135E-01 -9.7132E-01 5.7184E+00 -1.6533E+01 2.8818E+01 -3.0188E+01 1.7136E+01 -3.9335E+00 S8 -1.0387E-01 -2.7680E-01 6.6994E-01 -1.7038E+00 4.0119E+00 -6.0709E+00 5.2413E+00 -2.4008E+00 4.8321E-01 S9 -9.9993E-02 -9.5016E-02 3.4788E-01 -8.3128E-01 1.8253E+00 -2.6351E+00 2.1360E+00 -8.9462E-01 1.5269E-01 S10 -1.1673E-01 -8.0658E-02 3.0430E-01 -6.6320E-01 1.1636E+00 -1.3156E+00 8.6310E-01 -2.9873E-01 4.2204E-02 S11 1.0958E-01 -9.7921E-02 1.5330E-02 -5.8817E-02 8.9526E-02 -6.8385E-02 3.0766E-02 -7.5162E-03 7.5527E-04 S12 1.3582E-01 8.6344E-02 -2.0942E-01 1.1631E-01 -1.1783E-02 -1.3652E-02 6.2368E-03 -1.0787E-03 6.9402E-05 S13 -1.0932E-01 4.0235E-02 -3.8002E-03 2.4754E-02 -2.3902E-02 9.3236E-03 -1.8475E-03 1.8629E-04 -7.6428E-06 S14 -8.1176E-02 3.0950E-02 -6.1060E-03 -6.2063E-04 5.9247E-04 -1.1205E-04 5.7468E-06 5.2076E-07 -5.0079E-08

[0176] Table 17

[0177] Table 18 shows the total effective focal length f of the camera lens, the effective focal lengths f1 to f7 of each lens, the total track length TTL of the camera lens, and half of the diagonal line length of the effective pixel area on the imaging surface S17 ImgH of Example 6.

[0178] Parameter f (mm) f1 (mm) f2 (mm) f3 (mm) f4 (mm) Value 3.75 3.62 -11.11 -164.83 16.06 Parameter f5 (mm) f6 (mm) f7 (mm) TTL (mm) ImgH (mm) Value -61.38 3.18 -2.22 4.56 3.08

[0179] Table 18

[0180] Figure 12A The axial chromatic aberration curve of the camera lens of Example 6 is shown, which represents the deviation of the converging focal points of light rays of different wavelengths after passing through the lens. Figure 12B The astigmatism curve of the camera lens of Example 6 is shown, which represents the meridional image surface curvature and the sagittal image surface curvature. Figure 12CThe distortion curve of the camera lens of Embodiment 6 is shown, which represents the distortion size value under different view angle conditions. Figure 12D The magnification chromatic aberration curve of the camera lens of Embodiment 6 is shown, which represents the deviation of different image heights of light rays on the imaging plane after passing through the lens. According to the formula Figures 12A to 12D It can be seen that the camera lens given by Embodiment 6 can achieve good imaging quality.

[0181] Example 7

[0182] Hereinafter, the camera lens according to Embodiment 7 of the present application is described with reference to the accompanying drawings. Figures 13 to 14D The camera lens according to Embodiment 7 of the present application is described. Figure 13 The structural schematic diagram of the camera lens according to Embodiment 7 of the present application is shown.

[0183] As shown in the formula Figure 13 The camera lens according to the exemplary embodiments of the present application sequentially includes, along the optical axis from the object side to the image side: a first lens L1, a stop STO, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter L8, and an imaging plane S17.

[0184] The first lens L1 has positive refractive power, the object side surface S1 is a convex surface, and the image side surface S2 is a concave surface; the second lens L2 has negative refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface; the third lens L3 has negative refractive power, the object side surface S5 is a concave surface, and the image side surface S6 is a concave surface; the fourth lens L4 has positive refractive power, the object side surface S7 is a convex surface, and the image side surface S8 is a convex surface; the fifth lens L5 has negative refractive power, the object side surface S9 is a concave surface, and the image side surface S10 is a concave surface; the sixth lens L6 has positive refractive power, the object side surface S11 is a convex surface, and the image side surface S12 is a convex surface; the seventh lens L7 has negative refractive power, the object side surface S13 is a convex surface, and the image side surface S14 is a concave surface. The filter L8 has an object side surface S15 and an image side surface S16. Light from an object sequentially passes through each surface S1 to S16 and is finally imaged on the imaging plane S17.

[0185] Table 19 shows the surface type, curvature radius, thickness, material, and conic constant of each lens of the camera lens of Embodiment 7, wherein the units of the curvature radius and the thickness are millimeters (mm).

[0186]

[0187]

[0188] Table 19

[0189] As shown in Table 19, in Example 7, the object side surface and the image side surface of any one of the first lens L1 to the seventh lens L7 are aspherical surfaces. Table 20 shows the high-order term coefficients of the aspherical surfaces used in Example 7, wherein each aspherical surface can be defined by the formula (1) given in Example 1.

[0190] Face No. A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -2.9470E-03 5.9079E-02 -2.5000E-01 6.2731E-01 -9.9866E-01 9.9127E-01 -5.9416E-01 1.8909E-01 -2.4187E-02 S2 -5.1916E-02 -7.9253E-02 3.2517E-01 -6.7064E-01 9.9558E-01 -1.0750E+00 7.4648E-01 -2.8833E-01 4.6252E-02 S3 -9.6307E-02 -2.2559E-02 1.6668E-01 2.7814E-01 -9.5164E-01 6.5020E-01 4.8869E-01 -8.2445E-01 2.9723E-01 S4 7.5238E-04 -2.8121E-01 1.9946E+00 -8.5449E+00 2.5497E+01 -4.9030E+01 5.7892E+01 -3.8216E+01 1.0922E+01 S5 5.9919E-02 -4.6251E-01 2.0732E+00 -9.5739E+00 2.9957E+01 -5.9051E+01 7.0639E+01 -4.6790E+01 1.3227E+01 S6 -1.0006E-03 -5.5019E-01 2.2064E+00 -7.6114E+00 1.7336E+01 -2.4846E+01 2.1435E+01 -1.0157E+01 2.0163E+00 S7 -1.7164E-01 -6.8875E-02 -1.5239E+00 8.8392E+00 -2.7340E+01 5.1518E+01 -5.8119E+01 3.5575E+01 -8.9622E+00 S8 -1.0826E-01 -2.4999E-01 5.5310E-01 -1.2089E+00 2.3812E+00 -2.6946E+00 1.1908E+00 1.6468E-01 -1.7714E-01 S9 -1.0231E-01 -1.0716E-01 4.4050E-01 -1.0656E+00 2.1325E+00 -2.8383E+00 2.1695E+00 -8.6343E-01 1.3984E-01 S10 -1.1812E-01 -8.4912E-02 3.3588E-01 -7.3397E-01 1.2420E+00 -1.3608E+00 8.7432E-01 -2.9832E-01 4.1691E-02 S11 1.1117E-01 -1.0299E-01 3.1637E-02 -9.2358E-02 1.2846E-01 -9.6552E-02 4.3389E-02 -1.0669E-02 1.0862E-03 S12 1.3597E-01 8.7825E-02 -2.0684E-01 1.0616E-01 -9.9885E-04 -1.9335E-02 7.8772E-03 -1.3275E-03 8.4934E-05 S13 -1.1203E-01 4.3991E-02 -7.9466E-03 2.8601E-02 -2.6171E-02 1.0111E-02 -2.0052E-03 2.0337E-04 -8.4222E-06 S14 -8.7772E-02 4.1321E-02 -1.5802E-02 4.9293E-03 -1.4134E-03 3.4692E-04 -5.8639E-05 5.5700E-06 -2.1932E-07

[0191] Table 20

[0192] Table 21 shows the total effective focal length f of the camera lens, the effective focal lengths f1 to f7 of the lenses, the total track length TTL of the camera lens, and half of the diagonal line length of the effective pixel area on the imaging surface S17 (ImgH) in Example 7.

[0193] Parameter f (mm) f1 (mm) f2 (mm) f3 (mm) f4 (mm) Value 3.74 3.52 -10.13 -91.00 14.41 Parameter f5 (mm) f6 (mm) f7 (mm) TTL (mm) ImgH (mm) Value -53.16 3.18 -2.21 4.56 3.08

[0194] Table 21

[0195] Figure 14A The axial chromatic aberration curve of the camera lens of Example 7 is shown, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Figure 14B The astigmatism curve of the camera lens of Example 7 is shown, which represents the meridional image surface curvature and sagittal image surface curvature. Figure 14C The distortion curve of the camera lens of Example 7 is shown, which represents the distortion size value at different angles of view. Figure 14D The relative aperture chromatic aberration curve of the camera lens of Example 7 is shown, which represents the deviation of the light rays on the imaging surface after passing through the lens. According to the formula (2), the relative aperture chromatic aberration curve is calculated by using the effective focal length f and the effective focal length f1 to f7 of the lenses. Figures 14A to 14D It can be seen that the camera lens of Example 7 can achieve good imaging quality.

[0196] Example 8

[0197] The following refers to Figures 15 to 16D The camera lens according to Example 8 of the present application is described. Figure 15 The structural schematic diagram of the camera lens according to Example 8 of the present application is shown.

[0198] As Figure 15 shown, the camera lens according to the exemplary embodiments of the present application sequentially includes, along the optical axis from the object side to the image side, a first lens L1, a stop STO, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter L8, and an imaging surface S17.

[0199] The first lens L1 has positive refractive power, the object side surface S1 is a convex surface, and the image side surface S2 is a concave surface. The second lens L2 has negative refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface. The third lens L3 has positive refractive power, the object side surface S5 is a convex surface, and the image side surface S6 is a concave surface. The fourth lens L4 has negative refractive power, the object side surface S7 is a concave surface, and the image side surface S8 is a concave surface. The fifth lens L5 has negative refractive power, the object side surface S9 is a convex surface, and the image side surface S10 is a concave surface. The sixth lens L6 has positive refractive power, the object side surface S11 is a convex surface, and the image side surface S12 is a convex surface. The seventh lens L7 has negative refractive power, the object side surface S13 is a convex surface, and the image side surface S14 is a concave surface. The filter L8 has an object side surface S15 and an image side surface S16. Light from an object passes through the surfaces S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0200] Table 22 shows the surface type, the radius of curvature, the thickness, the material and the conic constant of each lens of the camera lens of Example 8, wherein the units of the radius of curvature and the thickness are millimeter (mm).

[0201]

[0202]

[0203] Table 22

[0204] As shown in Table 22, in Example 8, the object side surface and the image side surface of any one of the first lens L1 to the seventh lens L7 are aspherical surfaces. Table 23 shows the high order term coefficients of the aspherical surfaces of Example 8, wherein each aspherical surface can be defined by the formula (1) given in Example 1.

[0205] Face No. A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -2.6924E-04 2.3538E-02 -9.1561E-02 1.7250E-01 -1.7724E-01 5.9275E-02 4.2443E-02 -4.6119E-02 1.1788E-02 S2 -5.9832E-02 -5.3346E-02 5.0247E-01 -1.6029E+00 2.9824E+00 -3.4314E+00 2.3725E+00 -9.0107E-01 1.4411E-01 S3 -1.2687E-01 1.3952E-01 -1.5064E-01 6.3880E-01 -1.5929E+00 2.1472E+00 -1.5790E+00 5.7943E-01 -7.4494E-02 S4 -4.7959E-02 -1.5015E-01 2.0399E+00 -9.8116E+00 2.9470E+01 -5.5661E+01 6.4059E+01 -4.0999E+01 1.1211E+01 S5 2.2387E-02 -6.1593E-02 -7.3586E-02 1.4619E-01 -8.5956E-02 -3.9472E-01 9.2848E-01 -9.1225E-01 4.0034E-01 S6 -2.4768E-02 8.1096E-02 -9.4703E-01 4.1510E+00 -1.2010E+01 2.1711E+01 -2.3740E+01 1.4330E+01 -3.6156E+00 S7 -1.9208E-01 1.7248E-01 -7.0573E-01 2.2699E+00 -5.8586E+00 1.0269E+01 -1.1283E+01 6.9697E+00 -1.7999E+00 S8 -2.0784E-01 3.2467E-02 4.1429E-01 -2.0952E+00 4.9244E+00 -6.9770E+00 6.0050E+00 -2.8855E+00 5.9857E-01 S9 -1.5260E-01 9.2261E-03 1.8748E-01 -3.8625E-01 3.7583E-01 -2.7475E-01 1.7680E-01 -8.7842E-02 2.1089E-02 S10 -1.1501E-01 -9.6273E-02 2.7807E-01 -3.1465E-01 2.1157E-01 -9.3141E-02 2.5998E-02 -3.7703E-03 1.5132E-04 S11 1.1522E-01 -1.9703E-01 1.9607E-02 2.0622E-01 -3.5859E-01 3.0580E-01 -1.4551E-01 3.7077E-02 -3.9830E-03 S12 1.8518E-01 -6.5478E-02 -3.9937E-02 2.8295E-02 4.4322E-03 -9.1505E-03 3.3577E-03 -5.3362E-04 3.2427E-05 S13 -1.3328E-01 5.0363E-02 4.6496E-02 -4.2917E-02 1.4792E-02 -2.7335E-03 2.8761E-04 -1.6315E-05 3.8904E-07 S14 -9.2011E-02 4.1673E-02 -1.0094E-02 -8.4478E-04 1.2182E-03 -3.2699E-04 4.2417E-05 -2.7586E-06 7.2048E-08

[0206] Table 23

[0207] Table 24 shows the total effective focal length f of the camera lens of Example 8, the effective focal lengths f1 to f7 of each lens, the optical total track length TTL of the camera lens, and half of the diagonal line length of the effective pixel area on the imaging surface S17 ImgH.

[0208] Parameter f (mm) f1 (mm) f2 (mm) f3 (mm) f4 (mm) Value 3.95 3.85 -9.02 12.03 -69.00 Parameter f5 (mm) f6 (mm) f7 (mm) TTL (mm) ImgH (mm) Value -43.80 3.59 -2.49 4.76 3.41

[0209] Table 24

[0210] Figure 16A The axial chromatic aberration curve of the camera lens of Example 8 is shown, which represents the deviation of the converging focal points of light rays of different wavelengths after passing through the lens. Figure 16B The astigmatism curve of the camera lens of Example 8 is shown, which represents the meridional image surface curvature and the sagittal image surface curvature. Figure 16CThe distortion curve of the camera lens of embodiment 8 is shown, which represents the distortion size value under different view angle conditions. Figure 16D The magnification chromatic aberration curve of the camera lens of embodiment 8 is shown, which represents the deviation of different image heights of light rays on the imaging plane after passing through the lens. According to the formula Figures 16A to 16D It can be known that the camera lens given by embodiment 8 can achieve good imaging quality.

[0211] In summary, embodiments 1 to 8 respectively satisfy the following relationships shown in table 25.

[0212] Conditional Expression\Example 1 2 3 4 5 6 7 8 f / EPD 1.51 1.75 1.87 1.72 1.73 1.74 1.74 1.83 f2 / f -2.57 -2.24 -2.19 -2.20 -2.38 -2.97 -2.71 -2.29 |f / f1|+|f / f2| 1.25 1.46 1.51 1.48 1.47 1.37 1.43 1.46 f6 / TTL 0.78 0.74 0.74 0.69 0.70 0.70 0.70 0.76 TTL / ImgH 1.54 1.37 1.40 1.48 1.48 1.48 1.48 1.40 f / R1 2.06 2.42 2.51 2.44 2.47 2.45 2.44 2.48 R2 / f1 1.50 1.52 1.52 1.57 1.60 1.58 1.82 1.48 R1 / R14 1.10 1.25 1.26 1.28 1.29 1.30 1.31 1.23 f7 / CT7 -4.55 -4.39 -4.35 -4.41 -4.52 -4.53 -4.51 -4.45 CT3 / CT4 1.14 1.37 1.36 1.36 1.34 1.34 1.34 1.35 T56 / T67 2.18 2.40 3.11 2.27 2.74 3.09 3.11 1.91 CT4 / CT5 0.99 0.71 0.57 0.81 0.80 0.81 0.79 0.50 DT11 / DT51 1.00 0.99 0.97 1.02 1.03 1.05 1.05 0.97 SAG71 / CT7 -0.19 -0.30 -0.31 -0.41 -0.34 -0.45 -0.44 -0.36

[0213] Table 25

[0214] The present application also provides a camera device, and the electronic photosensitive element thereof can be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS). The camera device can be a separate camera equipment such as a digital camera, or a camera module integrated on a mobile electronic device such as a mobile phone, a tablet computer, etc. The camera device is equipped with the camera lens described above.

[0215] The above description is merely preferred embodiments of the present application and a description of the principles of the technology applied. It should be understood by those skilled in the art that the scope of the application involved in the present application is not limited to the technical solutions formed by the specific combinations of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the technical solutions formed by mutually replacing the above features and the technical features disclosed in the present application (but not limited to) having similar functions.

Claims

1. An image pickup lens characterized by comprising: In order from the object side to the image side along the optical axis, the camera lens comprises in sequence: a first lens with positive refractive power, whose object side surface is convex, and whose image side surface is concave; a second lens with negative refractive power, whose object side surface is convex, and whose image side surface is concave; a third lens with refractive power; a fourth lens with refractive power; a fifth lens with refractive power, whose image side surface is concave; a sixth lens with positive refractive power, whose object side surface is convex, and whose image side surface is convex; a seventh lens with negative refractive power, whose object side surface is convex, and whose image side surface is concave; wherein, the number of lenses with refractive power in the camera lens is seven; and a distance T56 on the optical axis between the fifth lens and the sixth lens and a distance T67 on the optical axis between the sixth lens and the seventh lens satisfy 1.9 < T56 / T67 ≤ 3.11; an effective focal length f7 of the seventh lens and a central thickness CT7 of the seventh lens on the optical axis satisfy -4.55 ≤ f7 / CT7 ≤ -4.35; a total effective focal length f of the camera lens, an effective focal length f1 of the first lens, and an effective focal length f2 of the second lens satisfy 1.25 ≤ |f / f1| + |f / f2| < 1.

55.

2. The camera lens of claim 1, wherein an effective focal length f2 of the second lens and a total effective focal length f of the camera lens satisfy -3 < f2 / f ≤ -2.

19.

3. The camera lens of claim 1, wherein the total effective focal length f of the camera lens and an entrance pupil diameter EPD of the camera lens satisfy 1.51 ≤ f / EPD < 1.

9.

4. The camera lens of claim 1, wherein a curvature radius R2 of the image side surface of the first lens and an effective focal length f1 of the first lens satisfy 1.48 ≤ R2 / f1 ≤ 1.

82.

5. The camera lens of claim 1, wherein an effective focal length f6 of the sixth lens and an optical total length TTL of the camera lens satisfy 0.69 ≤ f6 / TTL < 0.

8.

6. The camera lens according to claim 1, wherein the total effective focal length f of the camera lens and a curvature radius R1 of the object side surface of the first lens satisfy 2.06 ≤ f / R1 ≤ 2.

51.

7. The camera lens of claim 2, wherein the curvature radius R1 of the object side surface of the first lens and a curvature radius R14 of the image side surface of the seventh lens satisfy 1.10 ≤ R1 / R14 ≤ 1.

31.

8. The camera lens of claim 1, wherein an effective half aperture radius DT11 of the object side surface of the first lens and an effective half aperture radius DT51 of the object side surface of the fifth lens satisfy 0.97 ≤ DT11 / DT51 ≤ 1.

05.

9. The camera lens of claim 1, wherein a distance SAG71 on the optical axis from an intersection of the object side surface of the seventh lens and the optical axis to an effective half aperture radius vertex of the object side surface of the seventh lens and a central thickness CT7 of the seventh lens on the optical axis satisfy -0.45 ≤ SAG71 / CT7 ≤ -0.

19.

10. The camera lens according to any one of claims 1 to 9, characterized in that, an optical total length TTL of the camera lens and a half of a diagonal length of an effective pixel area on an imaging surface of the camera lens ImgH satisfy 1.37 ≤ TTL / ImgH ≤ 1.

54.

11. The camera lens of any one of claims 1-9, wherein, a central thickness CT3 of the third lens on the optical axis and a central thickness CT4 of the fourth lens on the optical axis satisfy 1.1 < CT3 / CT4 < 1.

4.

12. The camera lens of any one of claims 1-9, wherein, A central thickness CT4 of the fourth lens on the optical axis and a central thickness CT5 of the fifth lens on the optical axis satisfy 0.50≤CT4 / CT5≤1.

13. A camera lens characterized by comprising: The imaging lens comprises, in order from the object side to the image side along the optical axis: a first lens with positive refractive power, whose object side surface is convex, and whose image side surface is concave; a second lens with negative refractive power, whose object side surface is convex, and whose image side surface is concave; a third lens with refractive power; a fourth lens with refractive power; a fifth lens with refractive power, whose image side surface is concave; a sixth lens with positive refractive power, whose object side surface is convex, and whose image side surface is convex; a seventh lens with negative refractive power, whose object side surface is convex, and whose image side surface is concave; wherein the number of lenses with refractive power in the imaging lens is seven; a radius of curvature R1 of the object side surface of the first lens and a radius of curvature R14 of the image side surface of the seventh lens satisfy 1.10≤R1 / R14≤1.31; an effective focal length f7 of the seventh lens and a central thickness CT7 of the seventh lens on the optical axis satisfy -4.55≤f7 / CT7≤-4.35; a total effective focal length f of the imaging lens, an effective focal length f1 of the first lens, and an effective focal length f2 of the second lens satisfy 1.25≤|f / f1|+|f / f2|<1.

55.

14. The camera lens of claim 13, wherein, a separation distance T56 of the fifth lens and the sixth lens on the optical axis and a separation distance T67 of the sixth lens and the seventh lens on the optical axis satisfy 1.9<T56 / T67≤3.

11.

15. The imaging lens according to claim 13, wherein a total effective focal length f of the imaging lens and a radius of curvature R1 of the object side surface of the first lens satisfy 2.06≤f / R1≤2.

51.

16. The camera lens of claim 13, wherein, a radius of curvature R2 of the image side surface of the first lens and an effective focal length f1 of the first lens satisfy 1.48≤R2 / f1≤1.

82.

17. The camera lens of any one of claims 13 to 16, wherein, a total effective focal length f of the imaging lens and an entrance pupil diameter EPD of the imaging lens satisfy 1.51≤f / EPD<1.

9.

18. The camera lens according to any one of claims 13 to 16, characterized in that, an effective focal length f2 of the second lens and a total effective focal length f of the imaging lens satisfy -3<f2 / f≤-2.

19.

19. The camera lens of claim 17, wherein, an effective focal length f6 of the sixth lens and a total track length TTL of the imaging lens satisfy 0.69≤f6 / TTL<0.

8.

20. The camera lens of any one of claims 13-16, wherein, an effective half aperture radius DT11 of the object side surface of the first lens and an effective half aperture radius DT51 of the object side surface of the fifth lens satisfy 0.97≤DT11 / DT51≤1.

05.

21. The camera lens of claim 13, wherein, a distance SAG71 from an intersection of the object side surface of the seventh lens and the optical axis to an effective half aperture radius vertex of the object side surface of the seventh lens on the optical axis and a central thickness CT7 of the seventh lens on the optical axis satisfy -0.45≤SAG71 / CT7≤-0.

19.

22. The camera lens of claim 13, wherein, a central thickness CT3 of the third lens on the optical axis and a central thickness CT4 of the fourth lens on the optical axis satisfy 1.1<CT3 / CT4<1.

4.

23. The camera lens of claim 13, wherein, A central thickness CT4 of the fourth lens on the optical axis and a central thickness CT5 of the fifth lens on the optical axis satisfy 0.50 ≤ CT4 / CT5 ≤ 1.

24. The camera lens of any one of claims 22-23, wherein, An optical total track length TTL of the camera lens and a half of a diagonal line length of an effective pixel area on an imaging plane of the camera lens ImgH satisfy 1.37 ≤ TTL / ImgH ≤ 1.54.

Images