Camera lens set

Abstract

The present application discloses a camera lens group, which includes, in order from the object side to the image side along the optical axis: a first lens with negative optical power, whose object side surface is concave and whose image side surface is concave; a second lens with optical power, whose object side surface is convex and whose image side surface is concave; a third lens with positive optical power, whose object side surface is convex and whose image side surface is convex; a fourth lens with optical power; a fifth lens with positive optical power, whose image side surface is convex; and a sixth lens with negative optical power, whose object side surface is convex and whose image side surface is concave; wherein half of the field of view angle Semi‑FOV of the camera lens group and half of the diagonal length ImgH of an effective pixel area on an imaging surface of the camera lens group satisfy: 10.00mm<tan 2 (Semi‑FOV)×ImgH<23.50mm; the maximum distortion of the camera lens group is less than 3.50%.

Description

Technical Field

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

[0002] With the rapid development of science and technology, portable smart devices represented by mobile phones are becoming more and more popular, and people's interest and demand in using mobile phones to take photos or videos are also increasing. With the continuous development of mobile phone lenses, it is an inevitable trend for high-quality camera phones to replace cameras.

[0003] One advantage of mobile phones over cameras is that they have now developed dual, triple, quad, and even penta cameras, and have combined algorithms to improve image quality. The current mainstream mobile phone lens configuration generally includes large image lens, telephoto lens, and wide-angle lens. The wide-angle lens has a short focal length but a wide viewing angle. At the same shooting distance, it can capture a larger area of ​​scenery, but there is a more serious perspective distortion, and the sense of distance between the foreground and the background increases. Even with auxiliary algorithm correction, it is difficult to solve the distortion problem.

[0004] Therefore, it is still expected to better overcome the problems existing in the original images taken by the traditional wide-angle camera lens group. Summary of the invention

[0005] The present application provides a camera lens group, which includes, in order from the object side to the image side along the optical axis: a first lens with negative optical power, whose object side surface is concave and whose image side surface is concave; a second lens with optical power, whose object side surface is convex and whose image side surface is concave; a third lens with positive optical power, whose object side surface is convex and whose image side surface is convex; a fourth lens with optical power; a fifth lens with positive optical power, whose image side surface is convex; and a sixth lens with negative optical power, whose object side surface is convex and whose image side surface is concave; wherein half of the field of view angle Semi-FOV of the camera lens group and half of the diagonal length of the effective pixel area on the imaging surface of the camera lens group ImgH can satisfy: 10.00mm<tan 2 (Semi-FOV)×ImgH<23.50mm; the maximum distortion of the camera lens group is less than 3.50%.

[0006] In one embodiment, at least one aspherical mirror surface is provided from the object side surface of the first lens to the image side surface of the sixth lens.

[0007] In one embodiment, the distance TTL from the object side surface of the first lens to the imaging surface of the camera lens assembly on the optical axis and half the diagonal length of the effective pixel area on the imaging surface ImgH may satisfy: TTL / ImgH≤1.61.

[0008] In one embodiment, the effective focal length f1 of the first lens and the effective focal length f6 of the sixth lens may satisfy: 1.50<f1 / f6<3.50.

[0009] In one embodiment, the combined focal length f34 of the third lens and the fourth lens and the distance BFL on the optical axis from the image side surface of the sixth lens to the imaging surface of the camera lens group may satisfy: 2.00<f34 / BFL<6.00.

[0010] In one embodiment, a curvature radius R11 of the object-side surface of the sixth lens and a curvature radius R12 of the image-side surface of the sixth lens may satisfy: 2.00<R11 / R12<5.00.

[0011] In one embodiment, a curvature radius R2 of the image-side surface of the first lens and a curvature radius R3 of the object-side surface of the second lens may satisfy: 1.00<R2 / R3<2.50.

[0012] In one embodiment, a center thickness CT5 of the fifth lens on the optical axis and a spacing distance T56 between the fifth lens and the sixth lens on the optical axis may satisfy: 29.00<CT5 / T56<55.00.

[0013] In one embodiment, a center thickness CT1 of the first lens on the optical axis and a center thickness CT3 of the third lens on the optical axis may satisfy: 2.00<(CT3+CT1) / (CT3-CT1)<4.00.

[0014] In one embodiment, the on-axis distance SAG41 between the intersection of the object side surface of the fourth lens and the optical axis to the effective radius vertex of the object side surface of the fourth lens and the on-axis distance SAG42 between the intersection of the image side surface of the fourth lens and the optical axis to the effective radius vertex of the image side surface of the fourth lens may satisfy: 0.50<(SAG41+SAG42) / (SAG41-SAG42)<3.00.

[0015] In one embodiment, the maximum effective radius DT61 of the object-side surface of the sixth lens and the maximum effective radius DT62 of the image-side surface of the sixth lens may satisfy: 4.00<(DT61+DT62) / (DT62-DT61)<10.00.

[0016] In one embodiment, an edge thickness ET2 of the second lens and an edge thickness ET6 of the sixth lens may satisfy: 3.00<ET6 / ET2<6.00.

[0017] Another aspect of the present application provides a camera lens group, which includes, in order from the object side to the image side along the optical axis: a first lens with negative optical power, whose object side surface is concave and whose image side surface is concave; a second lens with optical power, whose object side surface is convex and whose image side surface is concave; a third lens with positive optical power, whose object side surface is convex and whose image side surface is convex; a fourth lens with optical power; a fifth lens with positive optical power, whose image side surface is convex; and a sixth lens with negative optical power, whose object side surface is convex and whose image side surface is concave; wherein the center thickness CT1 of the first lens on the optical axis and the center thickness CT3 of the third lens on the optical axis can satisfy: 2.00<(CT3+CT1) / (CT3-CT1)<4.00; and the maximum distortion of the camera lens group is less than 3.50%.

[0018] In one embodiment, the distance TTL from the object side surface of the first lens to the imaging surface of the camera lens assembly on the optical axis and half the diagonal length of the effective pixel area on the imaging surface ImgH may satisfy: TTL / ImgH≤1.61.

[0019] In one embodiment, the effective focal length f1 of the first lens and the effective focal length f6 of the sixth lens may satisfy: 1.50<f1 / f6<3.50.

[0020] In one embodiment, the combined focal length f34 of the third lens and the fourth lens and the distance BFL on the optical axis from the image side surface of the sixth lens to the imaging surface of the camera lens group may satisfy: 2.00<f34 / BFL<6.00.

[0021] In one embodiment, a curvature radius R11 of the object-side surface of the sixth lens and a curvature radius R12 of the image-side surface of the sixth lens may satisfy: 2.00<R11 / R12<5.00.

[0022] In one embodiment, a curvature radius R2 of the image-side surface of the first lens and a curvature radius R3 of the object-side surface of the second lens may satisfy: 1.00<R2 / R3<2.50.

[0023] In one embodiment, a center thickness CT5 of the fifth lens on the optical axis and a spacing distance T56 between the fifth lens and the sixth lens on the optical axis may satisfy: 29.00<CT5 / T56<55.00.

[0024] In one embodiment, half of the field of view angle Semi-FOV of the camera lens group and half of the diagonal length of the effective pixel area on the imaging surface of the camera lens group ImgH may satisfy: 10.00 mm < tan 2 (Semi-FOV)×ImgH<23.50mm.

[0025] In one embodiment, the on-axis distance SAG41 between the intersection of the object side surface of the fourth lens and the optical axis to the effective radius vertex of the object side surface of the fourth lens and the on-axis distance SAG42 between the intersection of the image side surface of the fourth lens and the optical axis to the effective radius vertex of the image side surface of the fourth lens may satisfy: 0.50<(SAG41+SAG42) / (SAG41-SAG42)<3.00.

[0026] In one embodiment, the maximum effective radius DT61 of the object-side surface of the sixth lens and the maximum effective radius DT62 of the image-side surface of the sixth lens may satisfy: 4.00<(DT61+DT62) / (DT62-DT61)<10.00.

[0027] In one embodiment, an edge thickness ET2 of the second lens and an edge thickness ET6 of the sixth lens may satisfy: 3.00<ET6 / ET2<6.00.

[0028] The present application adopts six lenses, and through the reasonable allocation of the optical focal length, surface shape, center thickness of each lens and the on-axis spacing between each lens, the above-mentioned camera lens group has at least one beneficial effect of miniaturization, wide angle, small distortion, good image quality, etc. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0030] Figure 1 A schematic structural diagram of a camera lens assembly according to Embodiment 1 of the present application is shown; FIG. 2A to FIG. 2D The axial chromatic aberration curve, the magnification chromatic aberration curve, the astigmatism curve and the distortion curve of the camera lens set of Example 1 are respectively shown;

[0031] Figure 3 A schematic structural diagram of a camera lens assembly according to Embodiment 2 of the present application is shown; 4A to 4D The axial chromatic aberration curve, the magnification chromatic aberration curve, the astigmatism curve and the distortion curve of the camera lens set of Example 2 are respectively shown;

[0032] Figure 5 A schematic structural diagram of a camera lens assembly according to Embodiment 3 of the present application is shown; FIG. 6A to FIG. 6D The axial chromatic aberration curve, the magnification chromatic aberration curve, the astigmatism curve and the distortion curve of the camera lens set of Example 3 are respectively shown;

[0033] Figure 7 A schematic structural diagram of a camera lens assembly according to Embodiment 4 of the present application is shown; FIG. 8A to FIG. 8DThe axial chromatic aberration curve, the magnification chromatic aberration curve, the astigmatism curve and the distortion curve of the camera lens set of Example 4 are respectively shown;

[0034] Fig. 9 A schematic structural diagram of a camera lens assembly according to Embodiment 5 of the present application is shown; FIG. 10A to FIG. 10D The axial chromatic aberration curve, the magnification chromatic aberration curve, the astigmatism curve and the distortion curve of the camera lens set of Example 5 are respectively shown;

[0035] Fig.11 A schematic structural diagram of a camera lens assembly according to Embodiment 6 of the present application is shown; FIG. 12A to FIG. 12D The axial chromatic aberration curve, the magnification chromatic aberration curve, the astigmatism curve and the distortion curve of the camera lens set of Example 6 are respectively shown. DETAILED DESCRIPTION

[0036] In order to better understand the present application, a more detailed description will be made of various aspects of the present application with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of exemplary embodiments of the present application, and are not intended to limit the scope of the present application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0037] It should be noted that in this specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the features. Therefore, without departing from the teaching of the present application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0038] In the drawings, the thickness, size and shape of the lenses have been slightly exaggerated for ease of explanation. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to the shapes of the spherical or aspherical surfaces shown in the drawings. The drawings are only examples and are not drawn strictly to scale.

[0039] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object is called the object side of the lens, and the surface of each lens closest to the imaging plane is called the image side of the lens.

[0040] It should also be understood that the terms "comprises", "including", "having", "includes" and / or "comprising", when used in this specification, indicate the presence of the stated features, elements and / or components, but do not exclude the presence or addition of one or more other features, elements, components and / or combinations thereof. In addition, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire listed features rather than modifying the individual elements in the list. In addition, when describing embodiments of the present application, "may" is used to mean "one or more embodiments of the present application". And, the term "exemplary" is intended to refer to an example or illustration.

[0041] Unless otherwise defined, all terms (including technical terms and scientific terms) used in this article have the same meaning as commonly understood by ordinary technicians in the field to which this application belongs. It should also be understood that terms (such as terms defined in commonly used dictionaries) should be interpreted as having the same meaning as their meaning in the context of the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined in this article.

[0042] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0043] The features, principles and other aspects of the present application are described in detail below.

[0044] The camera lens assembly according to the exemplary embodiment of the present application may include, for example, six lenses with optical power, namely, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The six lenses are arranged in sequence from the object side to the image side along the optical axis. Among the first lens to the sixth lens, any two adjacent lenses may have an air gap between them.

[0045] In an exemplary embodiment, the first lens may have negative optical power, and its object side surface may be concave, and the image side surface may be concave. The second lens may have positive optical power or negative optical power, and its object side surface may be convex, and the image side surface may be concave. The third lens may have positive optical power, and its object side surface may be convex, and the image side surface may be convex. The fourth lens may have positive optical power or negative optical power. The fifth lens may have positive optical power, and its image side surface may be convex. The sixth lens may have negative optical power, and its object side surface may be convex, and the image side surface may be concave. By reasonably controlling the optical power and surface curvature of each lens of the camera lens group, the aberrations of the camera lens group can be effectively balanced and controlled.

[0046] In an exemplary embodiment, the maximum distortion of the camera lens set of the present application is less than 3.50%. The distortion of the camera lens set of the present application is small, and the imaging quality of the camera lens set is high. The image formed by the camera lens set is close to the real scene.

[0047] In an exemplary embodiment, the camera lens assembly of the present application may satisfy the conditional expression 10.00 mm < tan 2 (Semi-FOV)×ImgH<23.50mm, where Semi-FOV is half of the field of view of the camera lens group, and ImgH is half of the diagonal length of the effective pixel area on the imaging surface of the camera lens group. The camera lens group satisfies 10.00mm<tan 2 (Semi-FOV)×ImgH<23.50mm, a larger field of view can be obtained, and thus the camera lens group has a wider imaging range. More specifically, Semi-FOV and ImgH can satisfy: 10.05mm<tan 2 (Semi-FOV)×ImgH<23.10mm.

[0048] In an exemplary embodiment, the camera lens group of the present application may satisfy the conditional formula TTL / ImgH≤1.61, wherein TTL is the distance on the optical axis from the object side of the first lens to the imaging surface of the camera lens group, and ImgH is half the diagonal length of the effective pixel area on the imaging surface. The camera lens group satisfies TTL / ImgH≤1.61, which can reduce its overall length and achieve ultra-thin characteristics. The camera lens group can be applied to various electronic devices with a trend of continuous thinning. More specifically, TTL and ImgH can satisfy: 1.50≤TTL / ImgH≤1.61.

[0049] In an exemplary embodiment, the camera lens group of the present application may satisfy the conditional formula 1.50<f1 / f6<3.50, wherein f1 is the effective focal length of the first lens, and f6 is the effective focal length of the sixth lens. The ratio of the effective focal lengths of the first lens and the sixth lens satisfies this formula, which is beneficial to reducing the sensitivity of the two lenses on the one hand, thereby making the camera lens more stable when used, and on the other hand, it is beneficial to control the contribution of the two lenses to the aberration within a reasonable range, so as to correct the aberration of the camera lens group and thus enable the camera lens group to obtain higher image quality, and in addition, it can make the two lenses easier to process. More specifically, f1 and f6 may satisfy: 1.80<f1 / f6<3.10.

[0050] In an exemplary embodiment, the camera lens assembly of the present application may satisfy the conditional formula 2.00<f34 / BFL<6.00, wherein f34 is the combined focal length of the third lens and the fourth lens, and BFL is the distance from the image side surface of the sixth lens to the imaging surface of the camera lens assembly on the optical axis. The camera lens assembly satisfies 2.00<f34 / BFL<6.00, which can make it have good processability and obtain better image quality. More specifically, f34 and BFL can satisfy: 2.50<f34 / BFL<5.80.

[0051] In an exemplary embodiment, the camera lens group of the present application may satisfy the conditional formula 2.00<R11 / R12<5.00, wherein R11 is the radius of curvature of the object side of the sixth lens, and R12 is the radius of curvature of the image side of the sixth lens. The camera lens group satisfies 2.00<R11 / R12<5.00, which, on the one hand, avoids the generation of image blur and enables it to obtain higher imaging quality; on the other hand, when molding the sixth lens, it can avoid the phenomenon of welding marks on the sixth lens, ensuring that the sixth lens can be molded into a large-diameter lens. More specifically, R11 and R12 can satisfy: 2.30<R11 / R12<4.50.

[0052] In an exemplary embodiment, the camera lens group of the present application may satisfy the conditional formula 1.00<R2 / R3<2.50, wherein R2 is the radius of curvature of the image side surface of the first lens, and R3 is the radius of curvature of the object side surface of the second lens. The camera lens group satisfies 1.00<R2 / R3<2.50, so that the aberration contribution of the first lens and the aberration contribution of the second lens can offset each other, thereby helping to correct the chromatic aberration of the camera lens group and helping to improve the imaging quality. More specifically, R2 and R3 may satisfy: 1.40<R2 / R3<2.25.

[0053] In an exemplary embodiment, the camera lens group of the present application may satisfy the conditional formula 29.00<CT5 / T56<55.00, wherein CT5 is the center thickness of the fifth lens on the optical axis, and T56 is the spacing distance between the fifth lens and the sixth lens on the optical axis. The camera lens group satisfies 29.00<CT5 / T56<55.00, and the positions of the fourth lens, the fifth lens, and the sixth lens on the optical axis can be reasonably adjusted and the structure of the fifth lens can be controlled. It is also beneficial to avoid ghosting caused by reflections between the three lenses and avoid ghosting caused by secondary reflections of the fifth lens. More specifically, CT5 and T56 may satisfy: 29.70<CT5 / T56<54.80.

[0054] In an exemplary embodiment, the camera lens group of the present application may satisfy the conditional formula 2.00<(CT3+CT1) / (CT3-CT1)<4.00, wherein CT1 is the center thickness of the first lens on the optical axis, and CT3 is the center thickness of the third lens on the optical axis. The camera lens group satisfies 2.00<(CT3+CT1) / (CT3-CT1)<4.00, which can ensure that the camera lens group has good processability on the one hand, and on the other hand, the contribution of the first lens to the aberration and the contribution of the third lens to the aberration can offset each other to improve the imaging quality of the camera lens group. More specifically, CT1 and CT3 can satisfy: 2.70<(CT3+CT1) / (CT3-CT1)<3.70.

[0055] In an exemplary embodiment, the camera lens group of the present application may satisfy the conditional formula 0.50<(SAG41+SAG42) / (SAG41-SAG42)<3.00, wherein SAG41 is the on-axis distance between the intersection of the object side surface of the fourth lens and the optical axis to the effective radius vertex of the object side surface of the fourth lens, and SAG42 is the on-axis distance between the intersection of the image side surface of the fourth lens and the optical axis to the effective radius vertex of the image side surface of the fourth lens. The camera lens group satisfies 0.50<(SAG41+SAG42) / (SAG41-SAG42)<3.00, which is conducive to controlling the curvature of the fourth lens to ensure that the fourth lens has good processability. More specifically, SAG41 and SAG42 may satisfy: 0.70<(SAG41+SAG42) / (SAG41-SAG42)<2.50.

[0056] In an exemplary embodiment, the camera lens group of the present application may satisfy the conditional formula 4.00<(DT61+DT62) / (DT62-DT61)<10.00, wherein DT61 is the maximum effective radius of the object side of the sixth lens, and DT62 is the maximum effective radius of the image side of the sixth lens. The camera lens group satisfies 4.00<(DT61+DT62) / (DT62-DT61)<10.00. On the one hand, the inclination angle of the light can be controlled to make the camera lens group more compatible with the imaging chip; on the other hand, it is conducive to ensuring the processability of the sixth lens. More specifically, DT61 and DT62 may satisfy: 4.90<(DT61+DT62) / (DT62-DT61)<9.40.

[0057] In an exemplary embodiment, the camera lens assembly of the present application may satisfy the conditional formula 3.00<ET6 / ET2<6.00, where ET2 is the edge thickness of the second lens and ET6 is the edge thickness of the sixth lens. The camera lens assembly satisfies 3.00<ET6 / ET2<6.00, which can improve its assembly stability while making the optical power more reasonably distributed to each lens. More specifically, ET2 and ET6 may satisfy: 3.25<ET6 / ET2<5.50.

[0058] In an exemplary embodiment, the camera lens assembly may further include at least one aperture. The aperture may be disposed at an appropriate position as required, for example, between the first lens and the second lens. Optionally, the camera lens assembly may further include a filter for correcting color deviation and / or a protective glass for protecting a photosensitive element located on the imaging surface.

[0059] The camera lens group according to the above-mentioned embodiment of the present application may use multiple lenses, such as the six lenses described above. By reasonably allocating the focal length, surface shape, center thickness of each lens, and axial spacing between each lens, etc., the volume of the camera lens group can be effectively reduced, the sensitivity of the camera lens group can be reduced, and the processability of the camera lens group can be improved, so that the camera lens group is more conducive to production and processing and can be applied to portable electronic products. At the same time, the camera lens group of the present application also has excellent optical properties such as wide angle, small distortion, high image quality and low ghost intensity.

[0060] In the embodiment of the present application, at least one of the mirror surfaces of each lens is an aspherical mirror surface, that is, at least one of the object side surface of the first lens to the image side surface of the sixth lens is an aspherical mirror surface. The characteristic of the aspherical lens is that the curvature changes continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens with a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has a better curvature radius characteristic, and has the advantages of improving distortion aberration and improving astigmatism aberration. After adopting an aspherical lens, the aberration occurring during imaging can be eliminated as much as possible, thereby improving the imaging quality. Optionally, at least one of the object side surface and the image side surface of each lens in the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens is an aspherical mirror surface. Optionally, the object side surface and the image side surface of each lens in the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens are all aspherical mirror surfaces.

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

[0062] Specific embodiments of the camera lens assembly applicable to the above-mentioned embodiments will be further described below with reference to the accompanying drawings.

[0063] Example 1

[0064] The following reference Figures 1 to 2D A camera lens assembly according to Embodiment 1 of the present application is described. Figure 1 A schematic structural diagram of a camera lens assembly according to Embodiment 1 of the present application is shown.

[0065] like Figure 1 As shown, the camera lens group includes, in order from the object side to the image side along the optical axis: a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6 and a filter E7.

[0066] The first lens E1 has negative optical power, and its object side surface S1 is concave, and its image side surface S2 is concave. The second lens E2 has positive optical power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has positive optical power, and its object side surface S5 is convex, and its image side surface S6 is convex. The fourth lens E4 has negative optical power, and its object side surface S7 is concave, and its image side surface S8 is concave. The fifth lens E5 has positive optical power, and its object side surface S9 is concave, and its image side surface S10 is convex. The sixth lens E6 has negative optical power, and its object side surface S11 is convex, and its image side surface S12 is concave. The filter E7 has an object side surface S13 and an image side surface S14. The camera lens group has an imaging surface S15, and the light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

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

[0068]

[0069] Table 1

[0070] In Example 1, the total effective focal length f of the camera lens group is 2.26 mm, the aperture number Fno of the camera lens group is 2.40, the axial distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S15 is 6.30 mm, the half diagonal length of the effective pixel area on the imaging surface S15 ImgH is 4.20 mm, and the half of the maximum field of view angle Semi-FOV is 66.5°.

[0071] In Example 1, the object side surface and the image side surface of any lens among the first lens E1 to the sixth lens E6 are both aspherical surfaces, and the surface shape x of each aspherical lens can be defined by but not limited to the following aspherical surface formula:

[0072]

[0073] Wherein, x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at a height of h along the optical axis; c is the paraxial curvature of the aspheric surface, c=1 / R (i.e., the paraxial curvature c is the reciprocal of the curvature radius R in Table 1 above); k is the cone coefficient; Ai is the correction coefficient of the i-th order of the aspheric surface. Table 2 below gives the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, 10 , A 12 , A 14 , A 16 , A 18 and A 20 .

[0074] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 1.5734E-01 -1.0952E-01 5.9866E-02 -2.3660E-02 6.4309E-03 -1.1665E-03 1.3431E-04 -8.8585E-06 2.5485E-07 S2 2.3530E-01 -1.0090E-01 -5.5951E-02 1.6329E-01 -1.5292E-01 7.4148E-02 -1.9887E-02 2.8153E-03 -1.6503E-04 S3 -2.2747E-02 -2.9788E-02 -5.8537E-01 2.5422E+00 -6.6826E+00 1.1290E+01 -1.1401E+01 6.2786E+00 -1.4599E+00 S4 -1.4354E-02 -1.4699E-01 7.0697E-01 -3.0205E+00 8.4231E+00 -1.1125E+01 3.0493E+00 7.9488E+00 -6.1691E+00 S5 6.8304E-03 -7.0059E-02 5.6624E-01 -4.0439E+00 1.6241E+01 -3.9314E+01 5.0603E+01 -2.7011E+01 0.0000E+00 S6 -1.1394E-01 1.5283E-02 -4.5680E-01 2.5148E+00 -1.0169E+01 2.5451E+01 -3.8710E+01 3.2453E+01 -1.1645E+01 S7 -3.5823E-01 3.6781E-01 -1.5343E+00 4.8385E+00 -1.0670E+01 1.4369E+01 -1.0625E+01 3.2918E+00 0.0000E+00 S8 -2.4024E-01 1.6221E-01 -9.0163E-03 -1.2059E-01 1.4665E-01 -8.5558E-02 2.5635E-02 -3.0959E-03 0.0000E+00 S9 -1.3950E-02 -1.6288E-01 4.2771E-01 -5.3407E-01 4.0444E-01 -1.9531E-01 5.9088E-02 -1.0237E-02 7.7561E-04 S10 1.7505E-01 -2.9369E-01 3.1338E-01 -2.5601E-01 1.5286E-01 -6.1505E-02 1.5601E-02 -2.2361E-03 1.3711E-04 S11 -3.2607E-03 -3.9649E-02 2.5419E-02 -8.2067E-03 1.5408E-03 -1.7173E-04 1.0923E-05 -3.4484E-07 3.3992E-09 S12 -3.8611E-02 6.2302E-03 1.0561E-04 -2.4860E-04 4.5451E-05 -3.8879E-06 1.6020E-07 -1.9850E-09 -3.4017E-11

[0075] Table 2

[0076] Figure 2A The axial chromatic aberration curve of the camera lens set of Example 1 is shown, which indicates the deviation of the convergent focus of light of different wavelengths passing through the back of the lens. Figure 2B The chromatic aberration curve of the camera lens set of Example 1 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. Figure 2C The astigmatism curve of the imaging lens set of Example 1 is shown, which indicates the meridional field curvature and the sagittal field curvature. Figure 2D The distortion curve of the camera lens set of Example 1 is shown, which indicates the distortion magnitude values ​​corresponding to different image heights. FIG. 2A to FIG. 2D It can be seen that the camera lens group can achieve good imaging quality.

[0077] Example 2

[0078] The following reference Figures 3 to 4DThe camera lens assembly according to Embodiment 2 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Figure 3 A schematic structural diagram of a camera lens assembly according to Embodiment 2 of the present application is shown.

[0079] like Figure 3 As shown, the camera lens group includes, in order from the object side to the image side along the optical axis: a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6 and a filter E7.

[0080] The first lens E1 has negative optical power, and its object side surface S1 is concave, and its image side surface S2 is concave. The second lens E2 has positive optical power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has positive optical power, and its object side surface S5 is convex, and its image side surface S6 is convex. The fourth lens E4 has negative optical power, and its object side surface S7 is concave, and its image side surface S8 is concave. The fifth lens E5 has positive optical power, and its object side surface S9 is convex, and its image side surface S10 is convex. The sixth lens E6 has negative optical power, and its object side surface S11 is convex, and its image side surface S12 is concave. The filter E7 has an object side surface S13 and an image side surface S14. The camera lens group has an imaging surface S15, and the light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0081] In Example 2, the total effective focal length f of the camera lens group is 2.28 mm, the aperture number Fno of the camera lens group is 2.21, the axial distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S15 is 6.66 mm, the half diagonal length of the effective pixel area on the imaging surface S15 ImgH is 4.20 mm, and the half of the maximum field of view angle Semi-FOV is 66.0°.

[0082] Table 3 shows the basic parameters of the camera lens set of Example 2, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 4 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 2, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0083]

[0084] Table 3

[0085] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 1.3053E-01 -8.2904E-02 4.0334E-02 -1.4200E-02 3.4605E-03 -5.6660E-04 5.9426E-05 -3.6100E-06 9.6683E-08 S2 2.0359E-01 -7.3308E-02 -5.1449E-02 1.1765E-01 -9.7312E-02 4.2284E-02 -1.0206E-02 1.3021E-03 -6.8823E-05 S3 -1.9366E-02 -3.9113E-02 -2.6101E-01 8.1552E-01 -1.6890E+00 2.3788E+00 -1.9536E+00 8.4392E-01 -1.4952E-01 S4 -2.4776E-03 -1.1831E-01 3.6879E-01 -1.5315E+00 4.2764E+00 -6.8273E+00 6.4964E+00 -3.4333E+00 7.8616E-01 S5 1.3456E-02 -7.3764E-02 8.0322E-01 -4.9028E+00 1.6650E+01 -3.2480E+01 3.3557E+01 -1.4279E+01 0.0000E+00 S6 -1.0039E-01 -5.2865E-02 4.6139E-01 -2.5347E+00 7.2443E+00 -1.2404E+01 1.2527E+01 -6.8639E+00 1.5441E+00 S7 -3.6156E-01 2.4916E-01 -5.8963E-01 8.6731E-01 -1.1710E+00 1.1514E+00 -7.1599E-01 2.0785E-01 0.0000E+00 S8 -2.3514E-01 2.3998E-01 -2.3127E-01 1.7896E-01 -1.0380E-01 4.1598E-02 -9.2823E-03 8.0760E-04 0.0000E+00 S9 -4.7165E-02 -2.8708E-02 1.8589E-01 -2.6960E-01 2.1198E-01 -1.0201E-01 3.0112E-02 -5.0122E-03 3.6027E-04 S10 1.7016E-01 -2.5492E-01 2.2600E-01 -1.4357E-01 6.4033E-02 -1.8499E-02 3.1985E-03 -2.9328E-04 1.0647E-05 S11 1.9827E-02 -5.0961E-02 2.8064E-02 -8.4312E-03 1.4816E-03 -1.4734E-04 6.7219E-06 2.2451E-08 -9.3918E-09 S12 -1.9569E-02 -5.9267E-03 4.8249E-03 -1.4489E-03 2.4669E-04 -2.5778E-05 1.6407E-06 -5.8518E-08 8.9764E-10

[0086] Table 4

[0087] Figure 4AThe axial chromatic aberration curve of the camera lens set of Example 2 is shown, which indicates the deviation of the convergent focus of light of different wavelengths after passing through the lens. Figure 4B The chromatic aberration curve of the camera lens set of Example 2 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. Figure 4C The astigmatism curve of the imaging lens set of Example 2 is shown, which indicates the meridional field curvature and the sagittal field curvature. Figure 4D The distortion curve of the camera lens set of Example 2 is shown, which indicates the distortion magnitude values ​​corresponding to different image heights. 4A to 4D It can be seen that the camera lens set provided in Example 2 can achieve good imaging quality.

[0088] Example 3

[0089] The following reference Figures 5 to 6D A camera lens set according to Embodiment 3 of the present application is described. Figure 5 A schematic structural diagram of a camera lens assembly according to Embodiment 3 of the present application is shown.

[0090] like Figure 5 As shown, the camera lens group includes, in order from the object side to the image side along the optical axis: a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6 and a filter E7.

[0091] The first lens E1 has negative optical power, and its object side surface S1 is concave, and its image side surface S2 is concave. The second lens E2 has positive optical power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has positive optical power, and its object side surface S5 is convex, and its image side surface S6 is convex. The fourth lens E4 has negative optical power, and its object side surface S7 is convex, and its image side surface S8 is concave. The fifth lens E5 has positive optical power, and its object side surface S9 is convex, and its image side surface S10 is convex. The sixth lens E6 has negative optical power, and its object side surface S11 is convex, and its image side surface S12 is concave. The filter E7 has an object side surface S13 and an image side surface S14. The camera lens group has an imaging surface S15, and the light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0092] In Example 3, the total effective focal length f of the camera lens group is 2.24 mm, the aperture number Fno of the camera lens group is 2.40, the axial distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S15 is 6.76 mm, the half diagonal length of the effective pixel area on the imaging surface S15 ImgH is 4.20 mm, and the half of the maximum field of view angle Semi-FOV is 66.9°.

[0093] Table 5 shows the basic parameters of the camera lens set of Example 3, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 6 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 3, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above-mentioned Example 1.

[0094]

[0095] Table 5

[0096]

[0097]

[0098] Table 6

[0099] Fig. 6A The axial chromatic aberration curve of the camera lens set of Example 3 is shown, which indicates the deviation of the convergent focus of light of different wavelengths after passing through the lens. Figure 6B The chromatic aberration curve of the camera lens set of Example 3 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. Figure 6C The astigmatism curve of the imaging lens set of Example 3 is shown, which indicates the meridional field curvature and the sagittal field curvature. Fig.6D The distortion curve of the camera lens set of Example 3 is shown, which indicates the distortion magnitude values ​​corresponding to different image heights. FIG. 6A to FIG. 6D It can be seen that the camera lens set provided in Example 3 can achieve good imaging quality.

[0100] Example 4

[0101] The following reference Figures 7 to 8D A camera lens set according to Embodiment 4 of the present application is described. Figure 7 A schematic structural diagram of a camera lens assembly according to Embodiment 4 of the present application is shown.

[0102] like Figure 7 As shown, the camera lens group includes, in order from the object side to the image side along the optical axis: a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6 and a filter E7.

[0103] The first lens E1 has negative optical power, and its object side surface S1 is concave, and its image side surface S2 is concave. The second lens E2 has negative optical power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has positive optical power, and its object side surface S5 is convex, and its image side surface S6 is convex. The fourth lens E4 has negative optical power, and its object side surface S7 is convex, and its image side surface S8 is concave. The fifth lens E5 has positive optical power, and its object side surface S9 is convex, and its image side surface S10 is convex. The sixth lens E6 has negative optical power, and its object side surface S11 is convex, and its image side surface S12 is concave. The filter E7 has an object side surface S13 and an image side surface S14. The camera lens group has an imaging surface S15, and the light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0104] In Example 4, the total effective focal length f of the camera lens group is 2.71 mm, the aperture number Fno of the camera lens group is 2.46, the axial distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S15 is 6.68 mm, the half diagonal length of the effective pixel area on the imaging surface S15 ImgH is 4.20 mm, and the half of the maximum field of view angle Semi-FOV is 57.2°.

[0105] Table 7 shows the basic parameters of the camera lens set of Example 4, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 8 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 4, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above-mentioned Example 1.

[0106]

[0107]

[0108] Table 7

[0109] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 1.4619E-01 -1.0364E-01 7.0094E-02 -3.7689E-02 1.5038E-02 -4.2482E-03 7.9168E-04 -8.6599E-05 4.1929E-06 S2 2.2710E-01 -1.6890E-01 1.7245E-01 -1.7874E-01 1.5480E-01 -9.6421E-02 3.6695E-02 -7.4920E-03 6.3047E-04 S3 -4.5580E-02 -4.8440E-02 4.9263E-03 7.0676E-02 -1.6361E-01 2.9428E-01 -2.9489E-01 1.4564E-01 -2.8085E-02 S4 -1.0932E-02 -9.1237E-02 5.8510E-01 -2.8092E+00 9.1238E+00 -1.7961E+01 2.1462E+01 -1.4355E+01 4.1561E+00 S5 -1.9746E-03 -2.1388E-02 -1.1649E-02 1.6906E-01 -6.8291E-01 1.2001E+00 -1.0028E+00 3.1082E-01 0.0000E+00 S6 -9.4074E-02 6.9089E-02 -4.0426E-01 1.3868E+00 -3.3265E+00 5.1586E+00 -4.9309E+00 2.6346E+00 -6.0481E-01 S7 -2.6115E-01 2.3995E-01 -3.5718E-01 2.6606E-01 2.4716E-02 -2.2479E-01 1.6561E-01 -3.9330E-02 0.0000E+00 S8 -2.1685E-01 2.8124E-01 -3.3936E-01 3.0723E-01 -1.8638E-01 7.1158E-02 -1.5333E-02 1.4162E-03 0.0000E+00 S9 -4.9669E-02 1.0661E-02 5.9077E-03 1.0533E-02 -2.6177E-02 2.1918E-02 -9.3194E-03 2.0341E-03 -1.8253E-04 S10 1.7217E-01 -2.9411E-01 3.2922E-01 -2.7241E-01 1.5885E-01 -6.1881E-02 1.5136E-02 -2.0758E-03 1.2056E-04 S11 -6.0372E-02 -3.8801E-04 7.7830E-03 -1.8910E-03 -4.4640E-04 3.1058E-04 -6.5124E-05 6.3483E-06 -2.4478E-07 S12 -6.2282E-02 2.0941E-02 -4.8466E-03 7.6300E-04 -8.5178E-05 6.9286E-06 -4.0655E-07 1.5534E-08 -2.8422E-10

[0110] Table 8

[0111] Fig. 8A The axial chromatic aberration curve of the camera lens set of Example 4 is shown, which indicates the deviation of the convergent focus of light of different wavelengths after passing through the lens. Figure 8B The chromatic aberration curve of the camera lens set of Example 4 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. Figure 8C The astigmatism curve of the imaging lens set of Example 4 is shown, which indicates the meridional image curvature and the sagittal image curvature. Fig.8D The distortion curve of the camera lens set of Example 4 is shown, which indicates the distortion magnitude values ​​corresponding to different image heights. FIG. 8A to FIG. 8DIt can be seen that the camera lens set provided in Example 4 can achieve good imaging quality.

[0112] Example 5

[0113] The following reference Figures 9 to 10D A camera lens set according to Embodiment 5 of the present application is described. Fig. 9 A schematic structural diagram of a camera lens assembly according to embodiment 5 of the present application is shown.

[0114] like Fig. 9 As shown, the camera lens group includes, in order from the object side to the image side along the optical axis: a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6 and a filter E7.

[0115] The first lens E1 has negative optical power, and its object side surface S1 is concave, and its image side surface S2 is concave. The second lens E2 has positive optical power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has positive optical power, and its object side surface S5 is convex, and its image side surface S6 is convex. The fourth lens E4 has positive optical power, and its object side surface S7 is convex, and its image side surface S8 is concave. The fifth lens E5 has positive optical power, and its object side surface S9 is convex, and its image side surface S10 is convex. The sixth lens E6 has negative optical power, and its object side surface S11 is convex, and its image side surface S12 is concave. The filter E7 has an object side surface S13 and an image side surface S14. The camera lens group has an imaging surface S15, and the light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0116] In Example 5, the total effective focal length f of the camera lens group is 2.41 mm, the aperture number Fno of the camera lens group is 2.26, the axial distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S15 is 6.65 mm, the half diagonal length of the effective pixel area on the imaging surface S15 ImgH is 4.20 mm, and the half of the maximum field of view angle Semi-FOV is 65.1°.

[0117] Table 9 shows the basic parameters of the camera lens set of Example 5, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 10 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 5, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0118]

[0119] Table 9

[0120] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 1.2512E-01 -7.4990E-02 3.5399E-02 -1.2032E-02 2.8094E-03 -4.3669E-04 4.2911E-05 -2.3987E-06 5.7748E-08 S2 1.8974E-01 -4.8046E-02 -7.9711E-02 1.4294E-01 -1.1271E-01 4.8125E-02 -1.1522E-02 1.4633E-03 -7.7097E-05 S3 -1.5442E-02 8.3513E-03 -4.3456E-01 1.3439E+00 -2.6402E+00 3.3485E+00 -2.5001E+00 9.9575E-01 -1.6409E-01 S4 1.2611E-02 -2.1084E-01 1.1798E+00 -5.4075E+00 1.5927E+01 -2.9059E+01 3.2403E+01 -2.0109E+01 5.2927E+00 S5 1.1194E-02 -5.8032E-02 3.9031E-01 -1.5392E+00 3.4335E+00 -4.3925E+00 2.9103E+00 -7.5572E-01 0.0000E+00 S6 -1.6363E-01 -9.9889E-02 3.8960E-01 -7.2639E-01 6.8080E-01 -1.3599E-01 -2.9581E-01 2.3336E-01 -5.0040E-02 S7 -2.1284E-01 -1.7339E-01 5.0566E-02 4.0602E-01 -1.0070E+00 1.0867E+00 -5.9390E-01 1.3629E-01 0.0000E+00 S8 -3.9623E-02 -2.1661E-01 3.2144E-01 -2.2153E-01 6.3235E-02 1.0304E-02 -1.0805E-02 1.9989E-03 0.0000E+00 S9 1.0603E-02 -6.0782E-02 3.5363E-02 3.4181E-02 -6.1975E-02 4.0473E-02 -1.4235E-02 2.6718E-03 -2.0858E-04 S10 1.6961E-01 -2.4194E-01 2.1619E-01 -1.4310E-01 7.0459E-02 -2.3307E-02 4.6968E-03 -5.1546E-04 2.3674E-05 S11 -8.5479E-02 -2.1372E-02 1.8119E-02 2.4469E-03 -4.8657E-03 1.6961E-03 -2.8267E-04 2.4118E-05 -8.6326E-07 S12 -7.1137E-02 2.7388E-02 -8.1394E-03 1.8765E-03 -3.2354E-04 3.8315E-05 -2.8658E-06 1.2082E-07 -2.1839E-09

[0121] Table 10

[0122] Fig. 10A The axial chromatic aberration curve of the camera lens set of Example 5 is shown, which indicates the deviation of the convergent focus of light of different wavelengths after passing through the lens. Fig. 10B The chromatic aberration curve of the camera lens set of Example 5 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. Fig. 10C The astigmatism curve of the imaging lens set of Example 5 is shown, which indicates the meridional field curvature and the sagittal field curvature. Fig. 10D The distortion curve of the camera lens set of Example 5 is shown, which indicates the distortion magnitude values ​​corresponding to different image heights. FIG. 10A to FIG. 10D It can be seen that the camera lens set provided in Example 5 can achieve good imaging quality.

[0123] Example 6

[0124] The following reference Figures 11 to 12D A camera lens set according to Embodiment 6 of the present application is described. Fig.11 A schematic structural diagram of a camera lens assembly according to Example 6 of the present application is shown.

[0125] like Fig.11 As shown, the camera lens group includes, in order from the object side to the image side along the optical axis: a first lens E1, a second lens E2, an aperture STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6 and a filter E7.

[0126] The first lens E1 has negative optical power, and its object side surface S1 is concave, and its image side surface S2 is concave. The second lens E2 has positive optical power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has positive optical power, and its object side surface S5 is convex, and its image side surface S6 is convex. The fourth lens E4 has negative optical power, and its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has positive optical power, and its object side surface S9 is concave, and its image side surface S10 is convex. The sixth lens E6 has negative optical power, and its object side surface S11 is convex, and its image side surface S12 is concave. The filter E7 has an object side surface S13 and an image side surface S14. The camera lens group has an imaging surface S15, and the light from the object passes through each surface S1 to S14 in sequence and is finally imaged on the imaging surface S15.

[0127] In Example 6, the total effective focal length f of the camera lens group is 2.38 mm, the aperture number Fno of the camera lens group is 2.30, the axial distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S15 is 6.34 mm, the half diagonal length of the effective pixel area on the imaging surface S15 ImgH is 4.20 mm, and the half of the maximum field of view angle Semi-FOV is 64.1°.

[0128] Table 11 shows the basic parameters of the camera lens set of Example 6, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 12 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 6, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0129]

[0130] Table 11

[0131]

[0132]

[0133] Table 12

[0134] Fig. 12A The axial chromatic aberration curve of the camera lens set of Example 6 is shown, which indicates the deviation of the convergent focus of light of different wavelengths after passing through the lens. Fig. 12B The chromatic aberration curve of the camera lens set of Example 6 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. Fig. 12C The astigmatism curve of the imaging lens group of Example 6 is shown, which indicates the meridional field curvature and the sagittal field curvature. Fig.12D The distortion curve of the camera lens set of Example 6 is shown, which indicates the distortion magnitude values ​​corresponding to different image heights. FIG. 12A to FIG. 12D It can be seen that the camera lens set provided in Example 6 can achieve good imaging quality.

[0135] In summary, Examples 1 to 6 respectively satisfy the relationships shown in Table 13.

[0136] Conditional formula\Example 1 2 3 4 5 6 <![CDATA[tan 2 (Semi-FOV)×ImgH]]> 22.17 21.18 23.07 10.08 19.56 17.81 TTL / ImgH 1.50 1.58 1.61 1.59 1.58 1.51 f1 / f6 1.99 1.84 1.85 3.04 2.29 2.18 f34 / BFL 5.55 5.75 4.34 2.60 3.39 3.53 R11 / R12 2.32 2.37 2.54 2.63 4.47 2.55 R2 / R3 1.76 1.47 1.19 2.06 1.61 2.21 CT5 / T56 49.36 52.90 54.78 29.75 47.36 46.72 (CT3+CT1) / (CT3-CT1) 3.66 3.44 3.21 2.78 2.73 3.33 (SAG41+SAG42) / (SAG41-SAG42) 1.97 1.86 1.54 0.79 1.85 2.47 (DT61+DT62) / (DT62-DT61) 9.32 7.67 6.77 6.35 4.93 8.61 ET6 / ET2 3.78 4.09 4.22 3.29 5.48 4.04 Maximum distortion -2.93％ -2.71％ -3.25％ -1.80％ -1.80％ -2.40％

[0137] Table 13

[0138] The present application also provides an imaging device, which is provided with an electronic photosensitive element for imaging, and the electronic photosensitive element can be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS). The imaging device can be an independent imaging device such as a digital camera, or an imaging module integrated in a mobile electronic device such as a mobile phone. The imaging device is equipped with the camera lens group described above.

[0139] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of protection involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the present application. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) to form a technical solution.

Claims

1. A camera lens assembly, characterized in that: Along the optical axis from the object side to the image side, they include: The first lens has a negative optical power, and its object side surface is concave and its image side surface is concave; a second lens having optical power, wherein the object side surface is convex and the image side surface is concave; The third lens has positive power, and its object side surface is convex and its image side surface is convex; a fourth lens having optical power; a fifth lens element having positive refractive power, the image-side surface of which is convex; and a sixth lens having negative optical power, whose object side surface is convex and whose image side surface is concave; Wherein, the number of lenses with optical power in the camera lens group is six; Half of the field of view angle Semi-FOV of the camera lens group and half of the diagonal length of the effective pixel area on the imaging surface of the camera lens group ImgH satisfy: 10.05 mm < tan 2 (Semi-FOV)×ImgH<23.10 mm; The maximum distortion of the camera lens group is less than 3.50%.

2. The camera lens assembly according to claim 1, characterized in that: The distance TTL from the object side of the first lens to the imaging surface of the camera lens assembly on the optical axis and half the diagonal length of the effective pixel area on the imaging surface ImgH satisfy: 1.50≤TTL / ImgH≤1.

61.

3. The camera lens assembly according to claim 1, characterized in that: The effective focal length f1 of the first lens and the effective focal length f6 of the sixth lens satisfy: 1.80<f1 / f6≤3.

04.

4. The camera lens assembly according to claim 1, characterized in that: The combined focal length f34 of the third lens and the fourth lens and the distance BFL from the image side surface of the sixth lens to the imaging surface of the camera lens group on the optical axis satisfy: 2.60≤f34 / BFL<5.

80.

5. The camera lens assembly according to claim 1, characterized in that: The curvature radius R11 of the object-side surface of the sixth lens and the curvature radius R12 of the image-side surface of the sixth lens satisfy: 2.30<R11 / R12<4.

50.

6. The camera lens assembly according to claim 1, characterized in that: The curvature radius R2 of the image side surface of the first lens and the curvature radius R3 of the object side surface of the second lens satisfy: 1.19≤R2 / R3<2.

25.

7. The camera lens assembly according to claim 1, characterized in that: The center thickness CT5 of the fifth lens on the optical axis and the spacing T56 between the fifth lens and the sixth lens on the optical axis satisfy: 29.70<CT5 / T56<54.

80.

8. The camera lens assembly according to claim 1, characterized in that: The center thickness CT1 of the first lens on the optical axis and the center thickness CT3 of the third lens on the optical axis satisfy: 2.70<(CT3+CT1) / (CT3-CT1)<3.

70.

9. The camera lens assembly according to any one of claims 1 to 8, characterized in that: An axial distance SAG41 between the intersection of the object side surface of the fourth lens and the optical axis to the effective radius vertex of the object side surface of the fourth lens and an axial distance SAG42 between the intersection of the image side surface of the fourth lens and the optical axis to the effective radius vertex of the image side surface of the fourth lens satisfy: 0.79≤(SAG41+SAG42) / (SAG41-SAG42)<2.

50.

10. The camera lens assembly according to any one of claims 1 to 8, characterized in that: The maximum effective radius DT61 of the object side surface of the sixth lens and the maximum effective radius DT62 of the image side surface of the sixth lens satisfy: 4.90<(DT61+DT62) / (DT62-DT61)≤9.

32.

11. The camera lens assembly according to any one of claims 1 to 8, characterized in that: The edge thickness ET2 of the second lens and the edge thickness ET6 of the sixth lens satisfy: 3.25<ET6 / ET2<5.50.

Images