Camera lens

Abstract

The present application discloses a camera lens, which sequentially includes, from the object side to the image side along the optical axis: a first lens with a positive optical power; a second lens with a positive optical power; a third lens with a negative optical power; a fourth lens with a positive optical power; a fifth lens with an optical power; a sixth lens with a negative optical power; a seventh lens with a positive optical power; an eighth lens with a positive optical power; a ninth lens with a negative optical power; and a tenth lens with a negative optical power. The total effective focal length f of the camera lens and the entrance pupil diameter EPD of the camera lens satisfy: f / EPD < 1.7; the total effective focal length f of the camera lens and the effective focal length f3 of the third lens satisfy: -2 < f3 / f < -1.5; and the number of lenses with optical power in the camera lens is ten.

Description

[0001] Divisional Application Statement

[0002] This application is a divisional application of the Chinese patent application for invention titled "Camera Lens" with the application number 202110138655.5, which was filed on February 1, 2021. Technical Field

[0003] This application relates to the field of optical elements, and specifically, to a camera lens. Background Art

[0004] With the continuous development of portable electronic products such as smart phones, people have put forward higher requirements for the performance of camera lenses of portable electronic products such as smart phones. At present, most camera lenses on the market cannot meet the imaging requirements in low light conditions (such as rainy days, dusk, etc.) and hand tremors due to limitations such as the number of lenses, aperture size, and their own structures. The multi-lens camera lens provides more design freedoms and will offer greater possibilities for improving the performance of portable electronic products such as smart phones. Summary of the Invention

[0005] On the one hand, this application provides such a camera lens, which sequentially includes, from the object side to the image side along the optical axis: a first lens with positive optical power; a second lens with positive optical power; a third lens with negative optical power; a fourth lens with positive optical power; a fifth lens with optical power; a sixth lens with negative optical power; a seventh lens with positive optical power; an eighth lens with positive optical power; a ninth lens with negative optical power; and a tenth lens with negative optical power. The total effective focal length f of the camera lens and the entrance pupil diameter EPD of the camera lens satisfy: f / EPD < 1.7; the total effective focal length f of the camera lens and the effective focal length f3 of the third lens satisfy: -2 < f3 / f < -1.5; and the number of lenses with optical power in the camera lens is ten.

[0006] In one embodiment, at least one of the object side surface of the first lens to the image side surface of the tenth lens is an aspherical surface.

[0007] In one embodiment, the total effective focal length f of the camera lens and the effective focal length f1 of the first lens can satisfy: 1.5 < f1 / f < 5.

[0008] In one embodiment, the central thickness CT2 of the second lens on the optical axis and the interval distance T23 between the second lens and the third lens on the optical axis can satisfy: 1 < (CT2 + T23) / (CT2 - T23) < 1.5.

[0009] In one embodiment, the radius of curvature R5 of the object side surface of the third lens and the radius of curvature R6 of the image side surface of the third lens may satisfy: 3 < (R5 + R6) / (R5 - R6) < 5.

[0010] In one embodiment, the central thickness CT3 of the third lens on the optical axis, 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 may satisfy: 1 < CT4 / (CT3 + CT5) < 1.5.

[0011] In one embodiment, the central thickness CT5 of the fifth lens on the optical axis, the central thickness CT6 of the sixth lens on the optical axis, the distance T45 between the fourth lens and the fifth lens on the optical axis, and the distance T56 between the fifth lens and the sixth lens on the optical axis may satisfy: 1 < (T45 + CT5) / (T56 + CT6) < 2.

[0012] In one embodiment, the effective focal length f7 of the seventh lens and the radius of curvature R14 of the image side surface of the seventh lens may satisfy: -3 < f7 / R14 < -1.

[0013] In one embodiment, the effective focal length f8 of the eighth lens, the central thickness CT8 of the eighth lens on the optical axis, the distance T78 between the seventh lens and the eighth lens on the optical axis, and the distance T89 between the eighth lens and the ninth lens on the optical axis may satisfy: 5 < f8 / (T78 + CT8 + T89) < 10.

[0014] In one embodiment, the total effective focal length f of the camera lens and the effective focal length f9 of the ninth lens may satisfy: -0.2 < f / f9 < 0.

[0015] In one embodiment, the effective focal length f10 of the tenth lens, the radius of curvature R19 of the object side surface of the tenth lens, and the radius of curvature R20 of the image side surface of the tenth lens may satisfy: 2 < (R19 - R20) / f10 < 7.

[0016] In one embodiment, the optical distortion DIST corresponding to the maximum field of view angle of the camera lens may satisfy: |DIST| ≤ 3%.

[0017] In one embodiment, the distance TTL from the object side surface of the first lens to the imaging surface of the camera lens on the optical axis and half of the diagonal length ImgH of the effective pixel region on the imaging surface of the camera lens may satisfy: 1 < TTL / ImgH < 1.6.

[0018] In one embodiment, the camera lens further includes a diaphragm, and the distance SD from the diaphragm to the image side surface of the tenth lens on the optical axis and the distance TTL from the object side surface of the first lens to the imaging surface of the camera lens on the optical axis may satisfy: 0.75 < SD / TTL < 0.9.

[0019] By reasonably setting the optical power of each lens and satisfying f / EPD < 1.7, this application is conducive to increasing the light transmission amount of the camera lens, enabling the camera lens to obtain more image information. At the same time, it can make the camera lens have a higher relative illumination and resolution, which is beneficial for the camera lens to still have good imaging ability in a darker environment. Exemplarily, satisfying -2 < f3 / f < -1.5 can make the lens have smaller spherical aberration and ensure good imaging quality in the axial field of view of the camera lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, other features, objectives, and advantages of this application will become more apparent:

[0021] Figure 1 FIG. 1 shows a schematic structural diagram of a camera lens according to Embodiment 1 of this application;

[0022] Figures 2A to 2D FIGS. 2-5 respectively show the axial chromatic aberration curve, lateral chromatic aberration curve, astigmatism curve, and distortion curve of the camera lens of Embodiment 1;

[0023] Figure 3 FIG. 6 shows a schematic structural diagram of a camera lens according to Embodiment 2 of this application;

[0024] Figures 4A to 4D FIGS. 7-10 respectively show the axial chromatic aberration curve, lateral chromatic aberration curve, astigmatism curve, and distortion curve of the camera lens of Embodiment 2;

[0025] Figure 5 FIG. 11 shows a schematic structural diagram of a camera lens according to Embodiment 3 of this application;

[0026] Figures 6A to 6D FIGS. 12-15 respectively show the axial chromatic aberration curve, lateral chromatic aberration curve, astigmatism curve, and distortion curve of the camera lens of Embodiment 3;

[0027] Figure 7 FIG. 16 shows a schematic structural diagram of a camera lens according to Embodiment 4 of this application;

[0028] Figures 8A to 8D FIGS. 17-20 respectively show the axial chromatic aberration curve, lateral chromatic aberration curve, astigmatism curve, and distortion curve of the camera lens of Embodiment 4;

[0029] Figure 9 FIG. 21 shows a schematic structural diagram of a camera lens according to Embodiment 5 of this application;

[0030] Figures 10A to 10D FIGS. 22-25 respectively show the axial chromatic aberration curve, lateral chromatic aberration curve, astigmatism curve, and distortion curve of the camera lens of Embodiment 5;

[0031] Figure 11 Shows a schematic structural diagram of a camera lens according to Embodiment 6 of the present application;

[0032] Figures 12A to 12D Respectively show the axial chromatic aberration curve, lateral chromatic aberration curve, astigmatism curve, and distortion curve of the camera lens of Embodiment 6;

[0033] Figure 13 Shows a schematic structural diagram of a camera lens according to Embodiment 7 of the present application; and

[0034] Figures 14A to 14D Respectively show the axial chromatic aberration curve, lateral chromatic aberration curve, astigmatism curve, and distortion curve of the camera lens of Embodiment 7. Detailed Description of the Invention

[0035] To better understand the present application, more detailed descriptions of various aspects of the present application will be made 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 do not 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.

[0036] It should be noted that in this specification, the expressions such as first, second, and third are only used to distinguish one feature from another feature and do not represent any limitation on the features. Therefore, without departing from the teachings of the present application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0037] In the drawings, for the sake of clarity, the thickness, size, and shape of the lenses have been slightly exaggerated. Specifically, the spherical or aspherical shapes shown in the drawings are shown by way of example. That is, the spherical or aspherical shapes are not limited to the spherical or aspherical shapes shown in the drawings. The drawings are for illustrative purposes only and are not drawn to an exact scale.

[0038] In this document, 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 to be photographed is called the object side surface of the lens, and the surface of each lens closest to the imaging surface is called the image side surface of the lens.

[0039] It should also be understood that the terms "comprising," "including," "having," "containing," and / or "containing," when used in this specification, denote 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 combinations thereof. Further, when an expression such as "at least one of..." appears after a list of listed features, it modifies the entire list of listed features rather than individual elements in the list. Further, when describing embodiments of the present application, the use of "may" means "one or more embodiments of the present application." Also, the term "exemplary" is intended to refer to an example or illustration.

[0040] 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 should also be understood that terms (such as those defined in a common dictionary) should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0041] It should be noted that, without conflict, the embodiments and features in the embodiments of this application may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0042] The features, principles, and other aspects of the present application will be described in detail below.

[0043] The camera lens according to an exemplary embodiment of the present application may include ten lenses having optical power, namely, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens, and a tenth lens. These ten lenses are arranged in order from the object side to the image side along the optical axis. There may be a spacing distance between any two adjacent lenses among the first lens to the tenth lens.

[0044] In the exemplary embodiment, the first lens may have a positive or negative optical power; the second lens may have a positive optical power; the third lens may have a positive or negative optical power; the fourth lens may have a positive or negative optical power; the fifth lens may have a positive or negative optical power; the sixth lens may have a negative optical power; the seventh lens may have a positive or negative optical power; the eighth lens may have a positive or negative optical power; the ninth lens may have a negative optical power; and the tenth lens may have a positive or negative optical power.

[0045] In an exemplary embodiment, the camera lens according to the present application may satisfy: f / EPD < 1.7, where f is the total effective focal length of the camera lens and EPD is the entrance pupil diameter of the camera lens. Satisfying f / EPD < 1.7 is beneficial to increasing the light passing amount of the camera lens, enabling the camera lens to obtain more image information. At the same time, it can make the camera lens have a higher relative illuminance and resolution, which is beneficial for the camera lens to still have good imaging ability in a darker environment.

[0046] In an exemplary embodiment, the camera lens according to the present application may satisfy: 1.5 < f1 / f < 5, where f is the total effective focal length of the camera lens and f1 is the effective focal length of the first lens. More specifically, f1 and f may further satisfy: 1.5 < f1 / f < 4.5. Satisfying 1.5 < f1 / f < 5 is beneficial to slowing down the refraction of light in the first lens, avoiding excessive optical power of the first lens, thereby reducing the sensitivity of the first lens and reducing the aberration generated by the first lens.

[0047] In an exemplary embodiment, the camera lens according to the present application may satisfy: 1 < (CT2 + T23) / (CT2 - T23) < 1.5, where CT2 is the central thickness of the second lens on the optical axis and T23 is the interval distance between the second lens and the third lens on the optical axis. More specifically, CT2 and T23 may further satisfy: 1.1 < (CT2 + T23) / (CT2 - T23) < 1.5. Satisfying 1 < (CT2 + T23) / (CT2 - T23) < 1.5 can ensure both the processing performance of the second lens and the third lens and the ultra-thin characteristics of the camera lens.

[0048] In an exemplary embodiment, the camera lens according to the present application may satisfy: 3 < (R5 + R6) / (R5 - R6) < 5, where R5 is the curvature radius of the object side of the third lens and R6 is the curvature radius of the image side of the third lens. More specifically, R5 and R6 may further satisfy: 3.8 < (R5 + R6) / (R5 - R6) < 5. Satisfying 3 < (R5 + R6) / (R5 - R6) < 5 can avoid increasing the processing difficulty due to the excessive opening angle of the third lens and reduce the sensitivity of the third lens, effectively balancing the coma and field curvature of the lens.

[0049] In an exemplary embodiment, the camera lens according to the present application may satisfy: -2 < f3 / f < -1.5, where f is the total effective focal length of the camera lens and f3 is the effective focal length of the third lens. More specifically, f3 and f may further satisfy: -2 < f3 / f < -1.6. Satisfying -2 < f3 / f < -1.5 can make the lens have a smaller spherical aberration and ensure good imaging quality of the on-axis field of view of the camera lens.

[0050] In an exemplary embodiment, the camera lens according to the present application may satisfy: 1 < CT4 / (CT3 + CT5) < 1.5, where CT3 is the central thickness of the third lens on the optical axis, CT4 is the central thickness of the fourth lens on the optical axis, and CT5 is the central thickness of the fifth lens on the optical axis. Satisfying 1 < CT4 / (CT3 + CT5) < 1.5 is beneficial for ensuring the molding characteristics of the third lens to the fifth lens, for reducing the degree of deflection of light in the third lens to the fifth lens, reducing lens sensitivity, and for reducing the overall length of the camera lens, achieving the characteristic of an ultra-thin lens.

[0051] In an exemplary embodiment, the camera lens according to the present application may satisfy: 1 < (T45 + CT5) / (T56 + CT6) < 2, where CT5 is the central thickness of the fifth lens on the optical axis, CT6 is the central thickness of the sixth lens on the optical axis, T45 is the distance between the fourth lens and the fifth lens on the optical axis, and T56 is the distance between the fifth lens and the sixth lens on the optical axis. More specifically, T45, CT5, T56, and CT6 may further satisfy: 1.1 < (T45 + CT5) / (T56 + CT6) < 1.8. Satisfying 1 < (T45 + CT5) / (T56 + CT6) < 2 can ensure the processing performance of the fifth lens and the sixth lens and can achieve the characteristic of an ultra-thin lens.

[0052] In an exemplary embodiment, the camera lens according to the present application may satisfy: -3 < f7 / R14 < -1, where f7 is the effective focal length of the seventh lens and R14 is the radius of curvature of the image side of the seventh lens. More specifically, f7 and R14 may further satisfy: -2.8 < f7 / R14 < -1.8. Satisfying -3 < f7 / R14 < -1 can control the field curvature contribution of the image side of the seventh lens within a reasonable range to balance the field curvature generated by the front lenses.

[0053] In an exemplary embodiment, the camera lens according to the present application may satisfy: 5 < f8 / (T78 + CT8 + T89) < 10, where f8 is the effective focal length of the eighth lens, CT8 is the central thickness of the eighth lens on the optical axis, T78 is the distance between the seventh lens and the eighth lens on the optical axis, and T89 is the distance between the eighth lens and the ninth lens on the optical axis. More specifically, f8, T78, CT8, and T89 may further satisfy: 5 < f8 / (T78 + CT8 + T89) < 9.5. Satisfying 5 < f8 / (T78 + CT8 + T89) < 10 can ensure the assembly processability of the seventh lens to the ninth lens and can reduce the ghost image risk brought by the seventh lens to the ninth lens.

[0054] In an exemplary embodiment, the camera lens according to the present application may satisfy: -0.2 < f / f9 < 0, where f is the total effective focal length of the camera lens, and f9 is the effective focal length of the ninth lens. More specifically, f and f9 may further satisfy: -0.15 < f / f9 < 0. Satisfying -0.2 < f / f9 < 0 can control the spherical aberration contribution of the ninth lens within a reasonable range, so that good imaging quality can be obtained in the on-axis field of view of the lens.

[0055] In an exemplary embodiment, the camera lens according to the present application may satisfy: 2 < (R19 - R20) / f10 < 7, where f10 is the effective focal length of the tenth lens, R19 is the curvature radius of the object side surface of the tenth lens, and R20 is the curvature radius of the image side surface of the tenth lens. More specifically, R19, R20, and f10 may further satisfy: 2.7 < (R19 - R20) / f10 < 6.2. Satisfying 2 < (R19 - R20) / f10 < 7 can effectively correct the astigmatism of the tenth lens, and thus can ensure the image quality of the edge field of view of the lens.

[0056] In an exemplary embodiment, the camera lens according to the present application may satisfy: |DIST| ≤ 3%, where DIST is the optical distortion corresponding to the maximum field of view angle of the camera lens. More specifically, DIST may further satisfy: |DIST| ≤ 2.2%. Satisfying |DIST| ≤ 3% is beneficial to realizing the small distortion characteristic and beneficial to improving the imaging quality.

[0057] In an exemplary embodiment, the camera lens according to the present application may satisfy: 1 < TTL / ImgH < 1.6, where TTL is the distance from the object side surface of the first lens to the imaging surface of the camera lens on the optical axis, 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 may further satisfy: 1.4 < TTL / ImgH < 1.6. Satisfying 1 < TTL / ImgH < 1.6 can effectively ensure the ultra-thin characteristic of the camera lens.

[0058] In an exemplary embodiment, the camera lens according to the present application further includes a diaphragm disposed between the object side and the first lens. The camera lens according to the present application may satisfy: 0.75 < SD / TTL < 0.9, where SD is the distance from the diaphragm to the image side surface of the tenth lens on the optical axis, and TTL is the distance from the object side surface of the first lens to the imaging surface of the camera lens on the optical axis. Satisfying 0.75 < SD / TTL < 0.9 can enable the lens to obtain sufficient light flux, ensure a high illuminance on the imaging surface of the lens, and enable the lens to maintain good imaging quality in both night or environments with weak light energy.

[0059] In an exemplary embodiment, the above-described camera lens may further include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging surface. This application proposes a camera lens having characteristics such as ultra-thin, large aperture, large image plane, and high imaging quality. For a camera lens with large aperture and ultra-thin characteristics, on the premise of meeting the large image plane, the larger the aperture, the greater the amount of incident light, which can effectively increase the shutter speed. At the same time, the background blur effect is better. The ten-piece ultra-thin characteristic can also ensure the ultra-thinness of portable electronic products such as smart phones on the premise of fully improving the optical performance, and is more adaptable to the field of view requirements and the market trend of ultra-thinness of portable electronic products such as smart phones. The camera lens according to the above embodiment of this application may employ multiple lenses, such as the ten lenses described above. By reasonably distributing the optical power, surface shape, central thickness of each lens, and the axial distance between each lens, etc., the incident light can be effectively converged, the optical total length of the imaging lens can be reduced, and the processability of the imaging lens can be improved, making the camera lens more conducive to production and processing.

[0060] In an embodiment of this application, at least one of the mirror surfaces of each lens is an aspherical mirror surface, that is, at least one of the mirror surfaces from the object side of the first lens to the image side of the tenth lens is an aspherical mirror surface. The characteristics of an aspherical lens are that the curvature changes continuously from the center of the lens to the periphery of the lens. Different from a spherical lens with a constant curvature from the center of the lens to the periphery, an aspherical lens has better curvature radius characteristics and has the advantages of improving distortion aberration and astigmatism aberration. After using an aspherical lens, it is possible to eliminate as much as possible the aberration that appears during imaging, thereby improving the imaging quality. Optionally, at least one of the object side and the image side of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens, and the tenth lens is an aspherical mirror surface. Optionally, both the object side and the image side of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens, and the tenth lens are aspherical mirror surfaces.

[0061] However, those skilled in the art should understand that without departing from the technical solutions claimed in this application, the number of lenses constituting the camera lens can be changed to obtain the various results and advantages described in this specification. For example, although the description in the embodiment is based on ten lenses as an example, the camera lens is not limited to including ten lenses. If necessary, the camera lens may also include other numbers of lenses.

[0062] The following further describes specific embodiments of the camera lens applicable to the above embodiments with reference to the accompanying drawings.

[0063] Example 1

[0064] The following is a reference to Figures 1 to 2D Describe the camera lens according to Embodiment 1 of the present application. Figure 1 Fig. shows a schematic structural diagram of the camera lens according to Embodiment 1 of the present application.

[0065] As Figure 1 shown, the camera lens sequentially includes, from the object side to the image side: a diaphragm STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a ninth lens E9, a tenth lens E10, a filter E11, and an imaging surface S23.

[0066] The first lens E1 has a positive optical power, its object side surface S1 is a convex surface, and its image side surface S2 is a concave surface. The second lens E2 has a positive optical power, its object side surface S3 is a convex surface, and its image side surface S4 is a concave surface. The third lens E3 has a negative optical power, its object side surface S5 is a convex surface, and its image side surface S6 is a concave surface. The fourth lens E4 has a positive optical power, its object side surface S7 is a convex surface, and its image side surface S8 is a convex surface. The fifth lens E5 has a positive optical power, its object side surface S9 is a convex surface, and its image side surface S10 is a concave surface. The sixth lens E6 has a negative optical power, its object side surface S11 is a convex surface, and its image side surface S12 is a concave surface. The seventh lens E7 has a positive optical power, its object side surface S13 is a concave surface, and its image side surface S14 is a convex surface. The eighth lens E8 has a positive optical power, its object side surface S15 is a convex surface, and its image side surface S16 is a convex surface. The ninth lens E9 has a negative optical power, its object side surface S17 is a concave surface, and its image side surface S18 is a convex surface. The tenth lens E10 has a negative optical power, its object side surface S19 is a concave surface, and its image side surface S20 is a concave surface. The filter E11 has an object side surface S21 and an image side surface S22. The light from the object sequentially passes through the surfaces S1 to S22 and finally forms an image on the imaging surface S23.

[0067] Table 1 shows the basic parameter table of the camera lens of Embodiment 1, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm).

[0068]

[0069]

[0070] Table 1

[0071] In this example, the total effective focal length f of the camera lens is 6.97 mm, and the maximum field of view FOV of the camera lens is 81.6°.

[0072] In Embodiment 1, the object side surface and the image side surface of any one of the first lens E1 to the tenth lens E10 are both aspherical surfaces, and the surface shape x of each aspherical lens can be defined by, but not limited to, the following aspherical formula:

[0073]

[0074] Wherein, x is the sagitta of the aspheric surface at a position with a height of h along the optical axis direction, which is the distance from the vertex of the aspheric surface; c is the paraxial curvature of the aspheric surface, c = 1 / R (i.e., the paraxial curvature c is the reciprocal of the radius of curvature R in Table 1 above); k is the conic coefficient; Ai is the correction coefficient of the i-th order of the aspheric surface. Table 2 below gives the high-order term coefficients A4, A6, A8, A 10 , A 12 , A 14 , A 16 , A 18 , and A 20 that can be used for each of the aspheric mirrors S1 - S20 in Example 1.

[0075] Plane number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -3.5637E-03 2.2353E-03 -2.7603E-03 1.7216E-03 -6.6995E-04 1.6160E-04 -2.2773E-05 1.6806E-06 -4.9223E-08 S2 -1.3153E-02 1.3665E-02 -1.8315E-02 1.1167E-02 -3.6324E-03 6.4877E-04 -5.1442E-05 -6.3442E-07 2.5356E-07 S3 -5.4423E-03 1.8687E-02 -2.4415E-02 1.3121E-02 -3.5682E-03 4.2338E-04 1.6280E-05 -9.6368E-06 7.2880E-07 S4 4.4834E-02 -1.7261E-02 8.8347E-03 -7.5677E-03 5.0903E-03 -2.1426E-03 5.2457E-04 -6.8083E-05 3.6222E-06 S5 -1.0610E-02 -1.2858E-02 1.3368E-02 -7.2196E-03 2.9424E-03 -1.0112E-03 2.4418E-04 -3.3051E-05 1.8405E-06 S6 -3.5442E-02 4.3618E-03 -4.2964E-04 4.8658E-04 -3.2073E-04 5.7660E-05 4.3047E-06 -2.3942E-06 2.0224E-07 S7 4.0301E-02 -1.1262E-02 2.5364E-03 -8.5194E-04 6.1576E-04 -2.7001E-04 6.0413E-05 -6.5575E-06 2.6965E-07 S8 1.4053E-02 -7.0193E-03 8.2552E-04 7.6997E-04 -8.5395E-04 4.6000E-04 -1.2908E-04 1.8125E-05 -1.0185E-06 S9 -3.0464E-02 8.2230E-03 -3.4681E-03 2.5333E-03 -2.6082E-03 1.4790E-03 -4.2908E-04 6.2068E-05 -3.5708E-06 S10 -3.5022E-02 3.4704E-02 -4.2580E-03 -1.3084E-02 1.0940E-02 -4.3184E-03 9.6709E-04 -1.1902E-04 6.3392E-06 S11 -2.3494E-02 2.5790E-02 -4.7835E-03 -1.1573E-02 1.0940E-02 -4.6526E-03 1.0880E-03 -1.3563E-04 7.0798E-06 S12 -1.1806E-02 -2.5557E-04 1.4597E-03 -2.5591E-03 1.8599E-03 -6.9657E-04 1.4283E-04 -1.4945E-05 6.1155E-07 S13 -8.1790E-03 7.1329E-04 -2.3195E-04 -6.9240E-04 6.8602E-04 -3.5122E-04 1.0269E-04 -1.6352E-05 1.1116E-06 S14 -2.1824E-02 -1.4853E-04 2.0279E-03 -1.5529E-03 6.8622E-04 -1.9698E-04 3.5637E-05 -3.7162E-06 1.7150E-07 S15 -8.3220E-03 -1.8667E-03 1.0404E-03 -3.7466E-04 9.9800E-05 -1.7032E-05 1.7327E-06 -9.5659E-08 2.2018E-09 S16 6.4409E-03 -2.9964E-03 7.0050E-04 -1.3667E-04 2.5144E-05 -3.3135E-06 2.6183E-07 -1.1062E-08 1.9081E-10 S17 -2.2215E-03 -1.3271E-03 3.5427E-05 3.0590E-05 -4.3203E-06 3.7497E-07 -2.7828E-08 1.3373E-09 -2.6913E-11 S18 5.0855E-03 -2.4597E-03 9.0251E-04 -1.6881E-04 1.8484E-05 -1.2543E-06 5.1858E-08 -1.1933E-09 1.1697E-11 S19 -7.8358E-03 2.9466E-03 -3.7782E-05 -5.9531E-05 9.2329E-06 -6.9627E-07 2.9750E-08 -6.8859E-10 6.7156E-12 S20 -1.8177E-02 3.8918E-03 -6.7306E-04 7.8329E-05 -6.0848E-06 3.1217E-07 -1.0105E-08 1.8609E-10 -1.4817E-12

[0076] Table 2

[0077] Figure 2A shows the axial chromatic aberration curve of the camera lens of Example 1, which represents the deviation of the focusing points of light rays with different wavelengths after passing through the lens. Figure 2B shows the lateral chromatic aberration curve of the camera lens of Example 1, which represents the deviation of different image heights on the imaging surface after the light rays pass through the lens. Figure 2C shows the astigmatism curve of the camera lens of Example 1, which represents the curvature of the meridional image plane and the curvature of the sagittal image plane. Figure 2D shows the distortion curve of the camera lens of Example 1, which represents the distortion magnitude values corresponding to different field angles. According to Figures 2A to 2D , it can be seen that the camera lens given in Example 1 can achieve good imaging quality.

[0078] Example 2

[0079] The following will refer to Figures 3 to 4D to describe the camera lens according to Embodiment 2 of the present application. In this embodiment and the following embodiments, for the sake of simplicity, some descriptions similar to those in Example 1 will be omitted. Figure 3 shows a schematic structural diagram of the camera lens according to Embodiment 2 of the present application.

[0080] As Figure 3 shown, the camera lens sequentially includes, from the object side to the image side: a diaphragm STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a ninth lens E9, a tenth lens E10, a filter E11, and an imaging surface S23.

[0081] The first lens E1 has a positive optical power. Its object side S1 is convex, and its image side S2 is concave. The second lens E2 has a positive optical power. Its object side S3 is convex, and its image side S4 is concave. The third lens E3 has a negative optical power. Its object side S5 is convex, and its image side S6 is concave. The fourth lens E4 has a positive optical power. Its object side S7 is convex, and its image side S8 is convex. The fifth lens E5 has a positive optical power. Its object side S9 is convex, and its image side S10 is concave. The sixth lens E6 has a negative optical power. Its object side S11 is convex, and its image side S12 is concave. The seventh lens E7 has a positive optical power. Its object side S13 is concave, and its image side S14 is convex. The eighth lens E8 has a positive optical power. Its object side S15 is convex, and its image side S16 is convex. The ninth lens E9 has a negative optical power. Its object side S17 is concave, and its image side S18 is convex. The tenth lens E10 has a negative optical power. Its object side S19 is concave, and its image side S20 is concave. The filter E11 has an object side S21 and an image side S22. Light from the object sequentially passes through the surfaces S1 to S22 and finally forms an image on the imaging surface S23.

[0082] In this example, the total effective focal length f of the camera lens is [6.92] mm, and the maximum field of view angle FOV of the camera lens is [81.6]°.

[0083] Table 3 shows the basic parameter table of the camera lens of Example 2, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm). Table 4 shows the higher-order term coefficients of the aspherical mirror surfaces that can be used in Example 2, where each aspherical surface type can be defined by the formula (1) given in the above Example 1.

[0084]

[0085]

[0086] Table 3

[0087] Plane number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -3.0620E-03 2.8746E-04 -1.2824E-03 1.1225E-03 -5.2173E-04 1.4409E-04 -2.3219E-05 1.9704E-06 -6.6717E-08 S2 -7.3752E-03 3.5917E-04 -8.1419E-03 8.2344E-03 -3.9578E-03 1.1260E-03 -1.9235E-04 1.8168E-05 -7.2730E-07 S3 1.1237E-03 3.1992E-03 -1.3492E-02 1.2052E-02 -5.9261E-03 1.8036E-03 -3.3605E-04 3.5192E-05 -1.5920E-06 S4 4.5787E-02 -2.1607E-02 1.1538E-02 -5.5077E-03 1.6379E-03 -3.4219E-04 6.6201E-05 -1.0025E-05 6.8264E-07 S5 -1.4903E-02 -8.2647E-03 1.1956E-02 -7.5342E-03 2.8725E-03 -7.6840E-04 1.5096E-04 -1.9289E-05 1.1343E-06 S6 -3.9115E-02 8.0541E-03 -1.1508E-03 5.0634E-04 -6.4329E-04 2.8394E-04 -5.6529E-05 4.8570E-06 -1.0003E-07 S7 3.8718E-02 -1.1947E-02 4.7841E-03 -8.2866E-04 -5.2918E-04 3.6240E-04 -9.2480E-05 1.1388E-05 -5.6910E-07 S8 1.3495E-02 -1.5757E-02 1.5319E-02 -1.1164E-02 5.3739E-03 -1.6107E-03 2.8931E-04 -2.8342E-05 1.1472E-06 S9 -2.5671E-02 -2.5660E-03 8.9210E-03 -7.7934E-03 3.4811E-03 -7.7070E-04 5.3781E-05 7.4359E-06 -1.0659E-06 S10 -3.2834E-02 4.2049E-02 -2.5013E-02 6.5418E-03 1.0783E-03 -1.4006E-03 4.6235E-04 -7.2829E-05 4.6849E-06 S11 -2.8423E-02 4.4334E-02 -3.4346E-02 1.3826E-02 -1.9634E-03 -6.6985E-04 3.5709E-04 -6.2325E-05 3.9646E-06 S12 -1.8048E-02 1.2309E-02 -1.2338E-02 7.6747E-03 -3.1878E-03 9.3608E-04 -1.9551E-04 2.6379E-05 -1.6597E-06 S13 -7.3962E-03 -1.3401E-04 1.7196E-03 -3.0580E-03 2.3910E-03 -1.1151E-03 3.1065E-04 -4.8126E-05 3.1860E-06 S14 -2.2922E-02 1.0673E-04 1.9836E-03 -1.6836E-03 8.1403E-04 -2.4980E-04 4.6905E-05 -4.9551E-06 2.2634E-07 S15 -5.9833E-03 -2.2463E-03 6.6322E-04 -1.3483E-04 3.7209E-05 -8.1368E-06 9.8776E-07 -5.9568E-08 1.3998E-09 S16 7.1250E-03 -3.2986E-03 5.1033E-04 -4.6251E-05 1.0734E-05 -2.2339E-06 2.2396E-07 -1.0531E-08 1.8715E-10 S17 -1.0359E-03 -2.5426E-03 3.4401E-04 -4.4484E-05 1.2060E-05 -1.7856E-06 1.2969E-07 -4.5989E-09 6.3821E-11 S18 3.7599E-03 -5.2375E-04 9.3592E-05 3.2696E-06 -3.1412E-06 4.1035E-07 -2.5181E-08 7.7368E-10 -9.5853E-12 S19 -1.2973E-02 6.4994E-03 -1.2565E-03 1.7843E-04 -1.9035E-05 1.3810E-06 -6.2319E-08 1.5637E-09 -1.6614E-11 S20 -1.7522E-02 3.4385E-03 -5.8621E-04 6.8736E-05 -5.4377E-06 2.8806E-07 -9.7332E-09 1.8781E-10 -1.5634E-12

[0088] Table 4

[0089] Figure 4A shows the axial chromatic aberration curve of the camera lens of Example 2, which represents the deviation of the convergence points of light rays of different wavelengths after passing through the lens. Figure 4B shows the lateral chromatic aberration curve of the camera lens of Example 2, which represents the deviation of different image heights of light rays on the imaging surface after passing through the lens. Figure 4C shows the astigmatism curve of the camera lens of Example 2, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 4D shows the distortion curve of the camera lens of Example 2, which represents the distortion magnitude values corresponding to different field of view angles. According toFigures 4A to 4D It can be seen that the camera lens given in Embodiment 2 can achieve good imaging quality.

[0090] Example 3

[0091] The following refers to Figures 5 to 6D a camera lens according to Embodiment 3 of the present application is described. Figure 5 FIG. shows a schematic structural diagram of the camera lens according to Embodiment 3 of the present application.

[0092] As Figure 5 shown, the camera lens sequentially includes, from the object side to the image side: a diaphragm STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a ninth lens E9, a tenth lens E10, a filter E11, and an imaging surface S23.

[0093] The first lens E1 has a positive optical power, the object side surface S1 is a convex surface, and the image side surface S2 is a concave surface. The second lens E2 has a positive optical power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface. The third lens E3 has a negative optical power, the object side surface S5 is a convex surface, and the image side surface S6 is a concave surface. The fourth lens E4 has a positive optical power, the object side surface S7 is a convex surface, and the image side surface S8 is a convex surface. The fifth lens E5 has a positive optical power, the object side surface S9 is a convex surface, and the image side surface S10 is a concave surface. The sixth lens E6 has a negative optical power, the object side surface S11 is a convex surface, and the image side surface S12 is a concave surface. The seventh lens E7 has a positive optical power, the object side surface S13 is a concave surface, and the image side surface S14 is a convex surface. The eighth lens E8 has a positive optical power, the object side surface S15 is a convex surface, and the image side surface S16 is a convex surface. The ninth lens E9 has a negative optical power, the object side surface S17 is a concave surface, and the image side surface S18 is a convex surface. The tenth lens E10 has a negative optical power, the object side surface S19 is a concave surface, and the image side surface S20 is a concave surface. The filter E11 has an object side surface S21 and an image side surface S22. Light from the object sequentially passes through the surfaces S1 to S22 and finally forms an image on the imaging surface S23.

[0094] In this example, the total effective focal length f of the camera lens is 6.80 mm, and the maximum field of view angle FOV of the camera lens is 81.6°.

[0095] Table 5 shows the basic parameter table of the camera lens of Embodiment 3, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm). Table 6 shows the high-order term coefficients of the aspherical mirror surfaces that can be used in Embodiment 3, where each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0096]

[0097]

[0098] Table 5

[0099] Plane number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -1.9272E-03 9.3582E-04 -3.0832E-03 3.2212E-03 -1.8270E-03 6.1585E-04 -1.2235E-04 1.3214E-05 -6.0403E-07 S2 1.2159E-03 -2.6811E-03 -3.4595E-02 5.0013E-02 -3.3776E-02 1.3094E-02 -2.9686E-03 3.6561E-04 -1.8892E-05 S3 1.1085E-02 -1.8155E-03 -4.3176E-02 6.3278E-02 -4.3789E-02 1.7212E-02 -3.9274E-03 4.8528E-04 -2.5131E-05 S4 4.0424E-02 -1.3240E-02 -1.4023E-02 3.6485E-02 -3.1255E-02 1.3496E-02 -3.1753E-03 3.8964E-04 -1.9572E-05 S5 -1.9204E-02 1.0841E-02 -2.7326E-02 3.7501E-02 -2.7167E-02 1.0993E-02 -2.5035E-03 2.9976E-04 -1.4654E-05 S6 -4.1598E-02 2.8354E-02 -2.9774E-02 1.6774E-02 -3.7085E-03 -6.3151E-04 5.2033E-04 -1.0391E-04 7.2053E-06 S7 2.8038E-02 4.2303E-04 4.5820E-03 -2.0544E-02 2.1933E-02 -1.1266E-02 3.0960E-03 -4.3713E-04 2.4910E-05 S8 6.2808E-03 3.9136E-03 -7.5328E-03 1.1186E-03 4.0897E-03 -3.3428E-03 1.1297E-03 -1.7780E-04 1.0529E-05 S9 -2.6116E-02 8.4172E-03 -1.4770E-02 1.3588E-02 -5.0392E-03 -4.1175E-04 8.6836E-04 -2.3647E-04 2.0882E-05 S10 -1.0711E-02 -6.0965E-03 -7.7077E-03 4.5195E-02 -4.9932E-02 2.6153E-02 -7.3429E-03 1.0669E-03 -6.3087E-05 S11 -7.7671E-04 -2.2885E-02 2.4482E-02 8.1481E-03 -2.6316E-02 1.7450E-02 -5.5141E-03 8.6630E-04 -5.4378E-05 S12 -1.0659E-02 -6.5598E-03 9.8973E-03 -4.3529E-03 -1.3612E-03 1.9643E-03 -7.3647E-04 1.2306E-04 -7.8709E-06 S13 -7.5178E-03 -2.4579E-03 3.8294E-03 -4.3840E-03 3.4873E-03 -1.8176E-03 5.5744E-04 -9.0792E-05 6.0460E-06 S14 8.8320E-03 -3.8194E-02 2.5130E-02 -9.8370E-03 2.6325E-03 -5.2206E-04 7.5230E-05 -6.8866E-06 2.9067E-07 S15 3.5354E-02 -3.7881E-02 1.4686E-02 -2.6260E-03 6.0635E-05 5.7871E-05 -1.0102E-05 7.0600E-07 -1.8563E-08 S16 2.1563E-02 -7.0388E-03 -4.6668E-03 3.9644E-03 -1.2843E-03 2.2659E-04 -2.2752E-05 1.2203E-06 -2.7168E-08 S17 -8.8393E-03 5.7046E-03 -3.6262E-03 9.4650E-04 -1.3893E-04 1.2983E-05 -7.6048E-07 2.4390E-08 -3.0461E-10 S18 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S19 -2.1639E-02 1.1648E-02 -2.1360E-03 2.0798E-04 -1.2029E-05 4.6186E-07 -1.4169E-08 3.5454E-10 -4.6197E-12 S20 -7.7147E-03 -4.5512E-04 3.0156E-04 -5.8189E-05 5.8458E-06 -3.2862E-07 1.0391E-08 -1.7185E-10 1.1445E-12

[0100] Table 6

[0101] Figure 6A The axial chromatic aberration curve of the imaging lens of Embodiment 3 is shown, which represents the deviation of the convergence points of light rays with different wavelengths after passing through the lens. Figure 6B The lateral chromatic aberration curve of the imaging lens of Embodiment 3 is shown, which represents the deviation of different image heights on the imaging plane after the light rays pass through the lens. Figure 6C The astigmatism curve of the imaging lens of Embodiment 3 is shown, which represents the curvature of the meridional image plane and the curvature of the sagittal image plane. Figure 6D The distortion curve of the imaging lens of Embodiment 3 is shown, which represents the distortion magnitude values corresponding to different field angles. According to Figures 6A to 6D It can be seen that the imaging lens given in Embodiment 3 can achieve good imaging quality.

[0102] Example 4

[0103] The following refers to Figures 7 to 8D The imaging lens according to Embodiment 4 of the present application is described. Figure 7 The structural schematic diagram of the imaging lens according to Embodiment 4 of the present application is shown.

[0104] As Figure 7 shown, the imaging lens sequentially includes, from the object side to the image side: a diaphragm STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a ninth lens E9, a tenth lens E10, a filter E11, and an imaging plane S23.

[0105] The first lens E1 has a positive optical power. Its object side S1 is convex, and its image side S2 is concave. The second lens E2 has a positive optical power. Its object side S3 is convex, and its image side S4 is concave. The third lens E3 has a negative optical power. Its object side S5 is convex, and its image side S6 is concave. The fourth lens E4 has a positive optical power. Its object side S7 is convex, and its image side S8 is convex. The fifth lens E5 has a positive optical power. Its object side S9 is convex, and its image side S10 is concave. The sixth lens E6 has a negative optical power. Its object side S11 is convex, and its image side S12 is concave. The seventh lens E7 has a positive optical power. Its object side S13 is concave, and its image side S14 is convex. The eighth lens E8 has a positive optical power. Its object side S15 is convex, and its image side S16 is convex. The ninth lens E9 has a negative optical power. Its object side S17 is concave, and its image side S18 is convex. The tenth lens E10 has a negative optical power. Its object side S19 is concave, and its image side S20 is concave. The filter E11 has an object side S21 and an image side S22. Light from the object sequentially passes through the surfaces S1 to S22 and finally forms an image on the imaging surface S23.

[0106] In this example, the total effective focal length f of the camera lens is 6.92 mm, and the maximum field of view angle FOV of the camera lens is 81.6°.

[0107] Table 7 shows the basic parameter table of the camera lens of Example 4, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm). Table 8 shows the higher-order term coefficients of the aspherical mirror surfaces that can be used in Example 4, where each aspherical surface type can be defined by the formula (1) given in the above Example 1.

[0108]

[0109] Table 7

[0110]

[0111]

[0112] Table 8

[0113] Figure 8A Shows the axial chromatic aberration curve of the camera lens of Example 4, which represents the deviation of the convergence points of light rays of different wavelengths after passing through the lens. Figure 8B Shows the lateral chromatic aberration curve of the camera lens of Example 4, which represents the deviation of different image heights of light rays on the imaging surface after passing through the lens. Figure 8C Shows the astigmatism curve of the camera lens of Example 4, which represents the curvature of the meridional image plane and the curvature of the sagittal image plane. Figure 8D Shows the distortion curve of the camera lens of Example 4, which represents the distortion magnitude values corresponding to different field of view angles. According toFigures 8A to 8D It can be seen that the imaging lens given in Embodiment 4 can achieve good imaging quality.

[0114] Example 5

[0115] The following refers to Figures 9 to 10D The imaging lens according to Embodiment 5 of the present application is described. Figure 9 The schematic structural diagram of the imaging lens according to Embodiment 5 of the present application is shown.

[0116] As Figure 9 shown, the imaging lens sequentially includes, from the object side to the image side: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a ninth lens E9, a tenth lens E10, a filter E11, and an imaging surface S23.

[0117] The first lens E1 has a positive optical power, its object side surface S1 is a convex surface, and its image side surface S2 is a concave surface. The second lens E2 has a positive optical power, its object side surface S3 is a convex surface, and its image side surface S4 is a concave surface. The third lens E3 has a negative optical power, its object side surface S5 is a convex surface, and its image side surface S6 is a concave surface. The fourth lens E4 has a positive optical power, its object side surface S7 is a convex surface, and its image side surface S8 is a convex surface. The fifth lens E5 has a negative optical power, its object side surface S9 is a convex surface, and its image side surface S10 is a concave surface. The sixth lens E6 has a negative optical power, its object side surface S11 is a convex surface, and its image side surface S12 is a concave surface. The seventh lens E7 has a positive optical power, its object side surface S13 is a concave surface, and its image side surface S14 is a convex surface. The eighth lens E8 has a positive optical power, its object side surface S15 is a convex surface, and its image side surface S16 is a convex surface. The ninth lens E9 has a negative optical power, its object side surface S17 is a concave surface, and its image side surface S18 is a convex surface. The tenth lens E10 has a negative optical power, its object side surface S19 is a concave surface, and its image side surface S20 is a concave surface. The filter E11 has an object side surface S21 and an image side surface S22. The light from the object sequentially passes through the surfaces S1 to S22 and finally forms an image on the imaging surface S23.

[0118] In this example, the total effective focal length f of the imaging lens is 6.83 mm, and the maximum field of view FOV of the imaging lens is 81.6°.

[0119] Table 9 shows the basic parameter table of the imaging lens of Embodiment 5, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm). Table 10 shows the higher-order term coefficients of the aspherical mirror surfaces that can be used in Embodiment 5, where each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0120]

[0121] Table 9

[0122]

[0123]

[0124] Table 10

[0125] Figure 10A The axial chromatic aberration curve of the camera lens of Example 5 is shown, which represents the deviation of the convergence points of light rays with different wavelengths after passing through the lens. Figure 10B The lateral chromatic aberration curve of the camera lens of Example 5 is shown, which represents the deviation of different image heights on the imaging surface after the light rays pass through the lens. Figure 10C The astigmatism curve of the camera lens of Example 5 is shown, which represents the curvature of the meridional image plane and the curvature of the sagittal image plane. Figure 10D The distortion curve of the camera lens of Example 5 is shown, which represents the distortion magnitude values corresponding to different field angles. According to Figures 10A to 10D It can be seen that the camera lens given in Example 5 can achieve good imaging quality.

[0126] Example 6

[0127] The following refers to Figures 11 to 12D A camera lens according to Embodiment 6 of the present application is described. Figure 11 A schematic structural diagram of the camera lens according to Embodiment 6 of the present application is shown.

[0128] As Figure 11 shown, the camera lens sequentially includes, from the object side to the image side: a diaphragm STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a ninth lens E9, a tenth lens E10, a filter E11, and an imaging surface S23.

[0129] The first lens E1 has a positive focal power, its object side S1 is convex, and its image side S2 is concave. The second lens E2 has a positive focal power, its object side S3 is convex, and its image side S4 is concave. The third lens E3 has a negative focal power, its object side S5 is convex, and its image side S6 is concave. The fourth lens E4 has a positive focal power, its object side S7 is convex, and its image side S8 is convex. The fifth lens E5 has a negative focal power, its object side S9 is convex, and its image side S10 is concave. The sixth lens E6 has a negative focal power, its object side S11 is concave, and its image side S12 is concave. The seventh lens E7 has a positive focal power, its object side S13 is concave, and its image side S14 is convex. The eighth lens E8 has a positive focal power, its object side S15 is convex, and its image side S16 is concave. The ninth lens E9 has a negative focal power, its object side S17 is concave, and its image side S18 is convex. The tenth lens E10 has a negative focal power, its object side S19 is concave, and its image side S20 is concave. The filter E11 has an object side S21 and an image side S22. Light from the object sequentially passes through the surfaces S1 to S22 and finally forms an image on the imaging surface S23.

[0130] In this example, the total effective focal length f of the camera lens is 6.92 mm, and the maximum field of view angle FOV of the camera lens is 81.6°.

[0131] Table 11 shows the basic parameter table of the camera lens of Example 6, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm). Table 12 shows the higher-order term coefficients of the aspherical mirror surfaces that can be used in Example 6, where each aspherical surface type can be defined by the formula (1) given in Example 1 above.

[0132]

[0133] Table 11

[0134]

[0135]

[0136] Table 12

[0137] Figure 12A Shows the axial chromatic aberration curve of the camera lens of Example 6, which represents the deviation of the convergence points of light rays of different wavelengths after passing through the lens. Figure 12B Shows the lateral chromatic aberration curve of the camera lens of Example 6, which represents the deviation of different image heights of light rays on the imaging surface after passing through the lens. Figure 12C Shows the astigmatism curve of the camera lens of Example 6, which represents the curvature of the meridional image plane and the curvature of the sagittal image plane. Figure 12DThe distortion curve of the camera lens according to Embodiment 6 is shown, which represents the distortion magnitude values corresponding to different field angles of view. According to Figures 12A to 12D it can be known that the camera lens given in Embodiment 6 can achieve good imaging quality.

[0138] Example 7

[0139] The following refers to Figures 13 to 14D and describes a camera lens according to Embodiment 7 of the present application. Figure 13 The schematic structural diagram of the camera lens according to Embodiment 7 of the present application is shown.

[0140] As Figure 13 shown, the camera lens sequentially includes, from the object side to the image side: a diaphragm STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a ninth lens E9, a tenth lens E10, a filter E11, and an imaging surface S23.

[0141] The first lens E1 has a positive optical power, its object side surface S1 is a convex surface, and its image side surface S2 is a concave surface. The second lens E2 has a positive optical power, its object side surface S3 is a convex surface, and its image side surface S4 is a concave surface. The third lens E3 has a negative optical power, its object side surface S5 is a convex surface, and its image side surface S6 is a concave surface. The fourth lens E4 has a positive optical power, its object side surface S7 is a convex surface, and its image side surface S8 is a convex surface. The fifth lens E5 has a negative optical power, its object side surface S9 is a concave surface, and its image side surface S10 is a concave surface. The sixth lens E6 has a negative optical power, its object side surface S11 is a concave surface, and its image side surface S12 is a convex surface. The seventh lens E7 has a positive optical power, its object side surface S13 is a concave surface, and its image side surface S14 is a convex surface. The eighth lens E8 has a positive optical power, its object side surface S15 is a convex surface, and its image side surface S16 is a concave surface. The ninth lens E9 has a negative optical power, its object side surface S17 is a concave surface, and its image side surface S18 is a convex surface. The tenth lens E10 has a negative optical power, its object side surface S19 is a concave surface, and its image side surface S20 is a concave surface. The filter E11 has an object side surface S21 and an image side surface S22. The light from the object sequentially passes through the surfaces S1 to S22 and finally forms an image on the imaging surface S23.

[0142] In this example, the total effective focal length f of the camera lens is 6.90 mm, and the maximum field angle of view FOV of the camera lens is 81.6°.

[0143] Table 13 shows the basic parameter table of the camera lens according to Embodiment 7, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm). Table 14 shows the higher-order term coefficients of the aspherical mirror surfaces that can be used in Embodiment 7, where each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0144]

[0145]

[0146] Table 13

[0147] Plane number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -2.7999E-04 3.8655E-05 -6.3959E-05 2.3826E-05 -1.2614E-06 -5.4527E-07 9.7320E-08 -6.1160E-09 1.3540E-10 S2 -1.5294E-04 -4.9703E-03 -3.8213E-03 4.0335E-03 -1.3941E-03 2.2454E-04 -1.3074E-05 -5.1110E-07 6.3363E-08 S3 1.6055E-02 -1.1495E-02 -5.2815E-03 7.3387E-03 -3.2588E-03 7.6554E-04 -9.7848E-05 6.1232E-06 -1.3283E-07 S4 4.2956E-02 -2.8889E-02 1.8043E-02 -7.7192E-03 2.1929E-03 -5.6743E-04 1.4196E-04 -2.2411E-05 1.4332E-06 S5 -2.0456E-02 -2.8082E-03 5.2336E-03 -1.4255E-03 -7.1786E-04 5.1048E-04 -1.1992E-04 1.2812E-05 -5.2880E-07 S6 -4.0400E-02 2.0161E-02 -1.7065E-02 1.1911E-02 -5.8361E-03 1.7235E-03 -2.8004E-04 2.2317E-05 -6.5889E-07 S7 2.5512E-02 -3.7303E-03 -1.5672E-05 -4.9607E-04 9.4405E-04 -7.3005E-04 2.7030E-04 -4.6493E-05 3.0029E-06 S8 -2.9621E-03 6.0848E-04 -7.8788E-04 1.3455E-04 7.9609E-05 -2.9668E-05 3.8636E-06 -2.2181E-07 4.6613E-09 S9 -1.5125E-02 2.2973E-03 -9.6868E-04 -3.1163E-03 2.7533E-03 -1.0699E-03 2.3596E-04 -2.9424E-05 1.6347E-06 S10 -8.9505E-04 -8.1938E-04 2.8117E-03 -2.8118E-03 1.2013E-03 -2.6731E-04 3.2849E-05 -2.1221E-06 5.6363E-08 S11 5.3144E-03 -1.5005E-02 9.0504E-03 -5.4125E-04 -1.8069E-03 8.9870E-04 -1.9048E-04 1.9269E-05 -7.6077E-07 S12 -1.2550E-03 -1.6457E-02 1.0069E-02 -4.1286E-03 1.3523E-03 -4.2694E-04 1.1396E-04 -1.7660E-05 1.1150E-06 S13 -8.4160E-03 -4.5440E-03 4.1862E-03 -3.9432E-03 2.3159E-03 -9.1274E-04 2.2533E-04 -3.0913E-05 1.7654E-06 S14 -2.1713E-02 3.3075E-04 2.4435E-03 -2.2384E-03 1.1354E-03 -3.6773E-04 7.2925E-05 -8.0247E-06 3.7234E-07 S15 9.0628E-04 -8.3599E-03 2.0867E-03 -7.6137E-05 -1.9371E-04 7.6605E-05 -1.3943E-05 1.2453E-06 -4.3267E-08 S16 3.6704E-03 -3.3023E-03 4.7019E-04 -2.9458E-05 7.5488E-07 4.2232E-09 -6.6691E-10 1.3528E-11 -9.0272E-14 S17 -2.3823E-02 1.7692E-03 -1.0484E-04 6.4894E-05 -1.1789E-05 9.6459E-07 -4.1352E-08 9.0781E-10 -8.0497E-12 S18 3.8588E-02 -1.9220E-02 3.8752E-03 -4.5154E-04 3.3884E-05 -1.6712E-06 5.2320E-08 -9.3855E-10 7.3036E-12 S19 3.5394E-02 -1.6824E-02 2.9003E-03 -2.6777E-04 1.4908E-05 -5.1805E-07 1.1055E-08 -1.3331E-10 7.0025E-13 S20 -1.1837E-02 6.9736E-04 -2.8470E-05 6.2876E-07 -8.5590E-09 7.3956E-11 -3.9350E-13 1.1702E-15 -1.4824E-18

[0148] Table 14

[0149] Figure 14A The axial chromatic aberration curve of the camera lens of Example 7 is shown, which represents the deviation of the focus points of light rays with different wavelengths after passing through the lens. Figure 14B The lateral chromatic aberration curve of the camera lens of Example 7 is shown, which represents the deviation of different image heights on the imaging surface after the light rays pass through the lens. Figure 14C The astigmatism curve of the camera lens of Example 7 is shown, which represents the curvature of the meridional image plane and the curvature of the sagittal image plane. Figure 14D The distortion curve of the camera lens of Example 7 is shown, which represents the distortion magnitude values corresponding to different field angles. According to Figures 14A to 14D it can be seen that the camera lens given in Example 7 can achieve good imaging quality.

[0150] In summary, Examples 1 to 7 respectively satisfy the relationships shown in Table 15.

[0151] Conditional / Example 1 2 3 4 5 6 7 f / EPD 1.60 1.61 1.61 1.61 1.61 1.61 1.61 |DIST|(%) 2.14 1.99 2.02 2.04 2.02 2.05 2.05 TTL / ImgH 1.50 1.47 1.52 1.46 1.50 1.47 1.47 SD / TTL 0.83 0.83 0.81 0.81 0.79 0.78 0.78 f1 / f 3.49 4.43 3.38 2.28 2.58 1.57 1.54 (CT2 + T23) / (CT2 - T23) 1.28 1.24 1.27 1.37 1.33 1.49 1.48 (R5 + R6) / (R5 - R6) 4.63 3.90 4.08 4.14 4.76 4.95 4.66 f3 / f -1.92 -1.68 -1.73 -1.67 -1.89 -1.96 -1.83 CT4 / (CT3 + CT5) 1.25 1.49 1.11 1.49 1.36 1.45 1.41 (T45 + CT5) / (T56 + CT6) 1.41 1.36 1.36 1.47 1.20 1.47 1.73 f7 / R14 -2.22 -2.47 -2.65 -2.10 -2.10 -1.85 -2.04 f8 / (T78 + CT8 + T89) 5.27 5.15 6.06 9.30 8.76 6.38 6.37 f / f9 -0.11 -0.12 -0.08 -0.09 -0.12 -0.12 -0.11 (R19 - R20) / f10 2.91 2.85 3.16 2.80 6.11 5.29 5.23

[0152] Table 15

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

[0154] The above description is only the preferred embodiments of the present application and the description of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solutions formed by the specific combination 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 with the technical features (but not limited to) having similar functions disclosed in the present application.

Claims

1. Camera lens, characterized in that, In order from the object side to the image side along the optical axis, it includes: A first lens with positive refractive power, whose object side is convex and image side is concave; A second lens with positive refractive power, whose object side is convex and image side is concave; A third lens with negative refractive power, whose object side is convex and image side is concave; A fourth lens with positive refractive power, whose object side is convex and image side is convex; A fifth lens with refractive power, whose image side is concave; A sixth lens with negative refractive power; A seventh lens with positive refractive power, whose object side is concave and image side is convex; An eighth lens with positive refractive power, whose object side is convex; A ninth lens with negative refractive power, whose object side is concave and image side is convex; and A tenth lens with negative refractive power, whose object side is concave and image side is concave; The total effective focal length f of the camera lens and the entrance pupil diameter EPD of the camera lens satisfy: 1.60 ≤ f / EPD ≤ 1.61; The total effective focal length f of the camera lens and the effective focal length f3 of the third lens satisfy: -2 < f3 / f ≤ -1.67; and The number of lenses with refractive power in the camera lens is ten.

2. The camera lens according to claim 1, wherein, The total effective focal length f of the camera lens and the effective focal length f1 of the first lens satisfy: 1.5 < f1 / f ≤ 4.

43.

3. The camera lens according to claim 1, wherein The central thickness CT2 of the second lens on the optical axis and the spacing distance T23 between the second lens and the third lens on the optical axis satisfy: 1.24 ≤ (CT2 + T23) / (CT2 - T23) < 1.

5.

4. The camera lens according to claim 1, characterized in that The radius of curvature R5 of the object side of the third lens and the radius of curvature R6 of the image side of the third lens satisfy: 3.90 ≤ (R5 + R6) / (R5 - R6) ≤ 4.

95.

5. The camera lens according to claim 1, characterized in that, The central thickness CT3 of the third lens on the optical axis, 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 satisfy: 1.11 ≤ CT4 / (CT3 + CT5) < 1.

5.

6. The camera lens according to claim 1, wherein, The central thickness CT5 of the fifth lens on the optical axis, the central thickness CT6 of the sixth lens on the optical axis, the spacing distance T45 between the fourth lens and the fifth lens on the optical axis, and the spacing distance T56 between the fifth lens and the sixth lens on the optical axis satisfy: 1.20 ≤ (T45 + CT5) / (T56 + CT6) ≤ 1.

73.

7. The imaging lens according to claim 1, characterized in that, The effective focal length f7 of the seventh lens and the radius of curvature R14 of the image side of the seventh lens satisfy: -2.65 ≤ f7 / R14 ≤ -1.

85.

8. The camera lens according to claim 1, wherein The effective focal length f8 of the eighth lens, the central thickness CT8 of the eighth lens on the optical axis, the spacing distance T78 between the seventh lens and the eighth lens on the optical axis, and the spacing distance T89 between the eighth lens and the ninth lens on the optical axis satisfy: 5.15 ≤ f8 / (T78 + CT8 + T89) ≤ 9.

30.

9. The camera lens according to claim 1, wherein The total effective focal length f of the camera lens and the effective focal length f9 of the ninth lens satisfy: -0.12 ≤ f / f9 ≤ -0.

08.

10. The camera lens according to claim 1, characterized in that, The effective focal length f10 of the tenth lens, the radius of curvature R19 of the object side surface of the tenth lens, and the radius of curvature R20 of the image side surface of the tenth lens satisfy: 2.80 ≤ (R19 - R20) / f10 ≤ 6.

11.

11. The camera lens according to any one of claims 1-10, characterized in that, The optical distortion DIST corresponding to the maximum field of view angle of the camera lens satisfies: 1.99 ≤ |DIST| ≤ 2.

14.

12. The camera lens according to any one of claims 2-10, characterized in that, The distance TTL from the object side surface of the first lens to the imaging surface of the camera lens on the optical axis and half of the diagonal length ImgH of the effective pixel region on the imaging surface of the camera lens satisfy: 1.46 ≤ TTL / ImgH ≤ 1.

52.

13. The camera lens according to any one of claims 1-10, characterized in that, The camera lens further includes a diaphragm. The distance SD from the diaphragm to the image side surface of the tenth lens on the optical axis and the distance TTL from the object side surface of the first lens to the imaging surface of the camera lens on the optical axis satisfy: 0.75 < SD / TTL ≤ 0.83.

Images