Camera lens set

Abstract

The present application discloses a camera lens group, which sequentially includes, along the optical axis from the object side to the image plane: a first lens group including a first lens having a focal power; a second lens group having a positive focal power and including a second lens having a positive focal power, a third lens having a negative focal power, a fourth lens having a negative focal power, a fifth lens having a focal power, and a sixth lens having a positive focal power; and a third lens group including a seventh lens having a negative focal power; wherein the positions of the first lens group and the third lens group on the optical axis relative to the image plane are fixed, and the distance of the second lens group on the optical axis relative to the first lens group is adjustable; the total effective focal length fi of the camera lens group in the telephoto state and the effective focal length FG1 of the first lens group satisfy: 0 < fi / |FG1| ≤ 0.1; the sum ∑T13 of the air gaps on the optical axis between two adjacent lens groups from the first lens group to the third lens group and the difference △f between the total effective focal lengths of the camera lens group in the telephoto state and the close-up state satisfy: 5.0 < ∑T13 / △f ≤ 6.5.

Description

Technical Field

[0001] The present application relates to the field of optical devices, and particularly to a movable focusing camera lens group. Background Art

[0002] With the rapid development of portable devices such as smart phones, the imaging surface of the camera lens of portable devices such as smart phones has a tendency to become larger and larger, and each mainstream manufacturer is deploying camera lenses with a main camera 1-inch target surface size.

[0003] However, with the increase of the target surface of the camera lens, the performance of the camera lens during close-up shooting will deteriorate. In order to balance the shooting effects during long-distance shooting and close-up shooting, the camera lens includes a telephoto lens and a wide-angle lens. When the camera lens is shooting close-up, it can be switched to the wide-angle lens to make the overall picture clear. However, switching between two different lenses will cause sudden changes in the position, perspective, color, brightness, etc. of the picture before and after switching, thus affecting the user experience. Summary of the Invention

[0004] The present application provides a camera lens group that can at least solve or partially solve at least one problem or other problems existing in the prior art. [[ID= ]]

[0005] On the one hand, the present application provides such a camera lens group, which sequentially includes a first lens group, a second lens group with positive optical power, and a third lens group along the optical axis from the object side to the image plane; the first lens group includes a first lens with optical power; the second lens group includes a second lens with positive optical power, a third lens with negative optical power, a fourth lens with negative optical power, a fifth lens with optical power, and a sixth lens with positive optical power; the third lens group includes a seventh lens with negative optical power; wherein, the positions of the first lens group and the third lens group on the optical axis relative to the image plane are fixed, and the distance of the second lens group on the optical axis relative to the first lens group is adjustable; the total effective focal length fi of the camera lens group in the long-distance shooting state and the effective focal length FG1 of the first lens group satisfy: 0 < fi / |FG1| ≤ 0.1; the sum ∑T13 of the air gaps between adjacent two lens groups among the first lens group to the third lens group on the optical axis and the difference △f between the total effective focal lengths of the camera lens group in the long-distance shooting state and the close-up shooting state satisfy: 5.0 < ∑T13 / △f ≤ 6.5.

[0006] According to an exemplary embodiment of the present application, the total effective focal length fi of the camera lens group in the long-distance shooting state and the effective focal length FG2 of the second lens group satisfy: 1.0 < fi / FG2 ≤ 1.3.

[0007] According to an exemplary embodiment of the present application, the combined focal length f45 of the fourth lens and the fifth lens and the effective focal length FG2 of the second lens group satisfy: -10 ≤ f45 / FG2 ≤ -4.5.

[0008] According to an exemplary embodiment of the present application, the combined focal length f23 of the second lens and the third lens and the effective focal length FG2 of the second lens group satisfy: 1.3≤f23 / FG2≤1.6.

[0009] According to an exemplary embodiment of the present application, the effective focal length f6 of the sixth lens and the effective focal length FG2 of the second lens group satisfy: 1.2≤f6 / FG2<1.7.

[0010] According to an exemplary embodiment of the present application, the total effective focal length fi of the camera lens group in the telephoto state and the effective focal length FG3 of the third lens group satisfy the following conditions: -1.5 <fi / FG3≤-1.0。

[0011] According to an exemplary embodiment of the present application, the on-axis distance Td2 from the object side surface of the second lens to the image side surface of the sixth lens, the air interval T34 between the third lens and the fourth lens on the optical axis, and the air interval T56 between the fifth lens and the sixth lens on the optical axis satisfy: 3.0 <Td2 / (T34+T56)<4.5。

[0012] According to an exemplary embodiment of the present application, the center thickness CT2 of the second lens on the optical axis, the center thickness CT3 of the third lens on the optical axis, and the air interval T34 between the third lens and the fourth lens on the optical axis satisfy: 1.2<(CT2+CT3) / T34<2.0.

[0013] According to an exemplary embodiment of the present application, the sum ΣCT of the center thicknesses of the first to seventh lenses on the optical axis and the center thickness CT1 of the first lens on the optical axis satisfy: 9.5<ΣCT / CT1<13.5.

[0014] According to an exemplary embodiment of the present application, the sum ΣCT of the center thicknesses of the first to seventh lenses on the optical axis and the center thickness CT7 of the seventh lens on the optical axis satisfy: 5.0≤ΣCT / CT7<6.0.

[0015] According to an exemplary embodiment of the present application, the Abbe coefficient V3 of the third lens, the Abbe coefficient V4 of the fourth lens, and the Abbe coefficient V5 of the fifth lens satisfy: 0.8≤(V5-V4) / (V5-V3)≤1.0.

[0016] According to an exemplary embodiment of the present application, the dispersion coefficient V2 of the second lens, the dispersion coefficient V3 of the third lens, the dispersion coefficient V4 of the fourth lens, the dispersion coefficient V5 of the fifth lens, and the dispersion coefficient V6 of the sixth lens satisfy the following conditions: 1.0<(V2+V6) / (V3+V4+V5)<1.5.

[0017] According to an exemplary embodiment of the present application, the difference Δf between the on-axis distance TTL from the object side of the first lens to the image plane and the total effective focal length of the camera lens group in the telephoto state and the macro state satisfies: 20 <TTL / △f≤28。

[0018] According to an exemplary embodiment of the present application, the sum ∑AT of the air intervals on the optical axis between two adjacent lenses among the first to seventh lenses and the movable distance △T of the second lens group when the camera lens group switches between the telephoto state and the macro state satisfy the following: 12<∑AT / △T<15.

[0019] According to an exemplary embodiment of the present application, the difference Δf between the total effective focal length of the camera lens group in the telephoto state and the macro state and the movable distance ΔT of the second lens group when the camera lens group switches between the telephoto state and the macro state satisfy: 1.0≤Δf / ΔT≤1.5.

[0020] The camera lens group provided by the present application includes three relatively independent lens groups. When the distance between the subject and the camera lens group changes from far to near, the camera lens group can be switched between the telephoto state and the macro state by moving the second lens group, thereby achieving the focus adjustment of the camera lens group. In addition, the optical power distribution of the first lens group is relatively small, which is conducive to reducing the assembly sensitivity of the first lens group and ensuring that the camera lens group has good assemblability. At the same time, by making the camera lens group meet 5.0<∑T13 / △f≤6.5, it is conducive to reasonably allocating the axial air space between the three lens groups and achieving a certain balance between the focus movement stroke and the focus range. Through the overall combination of the above three lens groups, the camera lens group can have the characteristics of a small focus movement stroke and easy processing while ensuring the performance of the camera lens group. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, objects and advantages of the present application will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings, in which:

[0022] Figure 1 1 shows a schematic structural diagram of a camera lens assembly according to Example 1 of the present application;

[0023] Figures 2A to 2C axial chromatic aberration curve, astigmatism curve, and distortion curve of the camera lens assembly according to Example 1 of the present application in a telephoto state (for example, when the subject is at infinity from the camera lens assembly);

[0024] Figures 3A to 3C axial chromatic aberration curve, astigmatism curve, and distortion curve of the camera lens assembly according to Example 1 of the present application in close-up state I (for example, the distance between the subject and the camera lens assembly is 800 mm);

[0025] Figures 4A to 4C axial chromatic aberration curve, astigmatism curve, and distortion curve of the camera lens assembly according to Example 1 of the present application in close-up state II (for example, the distance between the subject and the camera lens assembly is 150 mm);

[0026] Figure 5 A schematic structural diagram of a camera lens assembly according to embodiment 2 of the present application is shown;

[0027] Figures 6A to 6C axial chromatic aberration curve, astigmatism curve, and distortion curve of the camera lens assembly according to Example 2 of the present application in a telephoto state (for example, when the subject is at infinity from the camera lens assembly);

[0028] 7A to 7C axial chromatic aberration curve, astigmatism curve, and distortion curve of the camera lens assembly in close-up state I (for example, the distance between the subject and the camera lens assembly is 800 mm) according to Example 2 of the present application are respectively shown;

[0029] Figures 8A to 8C axial chromatic aberration curve, astigmatism curve, and distortion curve of the camera lens assembly according to Example 2 of the present application in close-up state II (for example, the distance between the subject and the camera lens assembly is 150 mm);

[0030] Figure 9 1 shows a schematic structural diagram of a camera lens assembly according to Example 3 of the present application;

[0031] 10A to 10C axial chromatic aberration curve, astigmatism curve, and distortion curve of the camera lens assembly according to Example 3 of the present application in a telephoto state (for example, when the subject is at infinity from the camera lens assembly);

[0032] Figures 11A to 11C axial chromatic aberration curve, astigmatism curve, and distortion curve of the camera lens assembly according to Example 3 of the present application in close-up state I (for example, the distance between the subject and the camera lens assembly is 300 mm);

[0033] 12A to 12C axial chromatic aberration curve, astigmatism curve, and distortion curve of the camera lens assembly according to Example 3 of the present application in close-up state II (for example, the distance between the subject and the camera lens assembly is 150 mm);

[0034] Figure 13 1 shows a schematic structural diagram of a camera lens assembly according to embodiment 4 of the present application;

[0035] 14A to 14Caxial chromatic aberration curve, astigmatism curve, and distortion curve of the camera lens assembly according to Example 4 of the present application in a telephoto state (for example, when the subject is at infinity from the camera lens assembly);

[0036] Figures 15A to 15C axial chromatic aberration curve, astigmatism curve, and distortion curve of the camera lens assembly according to Example 4 of the present application in close-up state I (for example, the distance between the subject and the camera lens assembly is 800 mm);

[0037] 16A to 16C axial chromatic aberration curve, astigmatism curve, and distortion curve of the camera lens assembly according to Example 4 of the present application in close-up state II (for example, the distance between the subject and the camera lens assembly is 150 mm);

[0038] Figure 17 1 shows a schematic structural diagram of a camera lens assembly according to embodiment 5 of the present application;

[0039] 18A to 18C axial chromatic aberration curve, astigmatism curve, and distortion curve of the camera lens assembly according to Example 5 of the present application in a telephoto state (for example, when the subject is at infinity from the camera lens assembly);

[0040] 19A to 19C axial chromatic aberration curve, astigmatism curve, and distortion curve of the camera lens assembly according to Example 5 of the present application in close-up state I (for example, the distance between the subject and the camera lens assembly is 800 mm);

[0041] 20A to 20C axial chromatic aberration curve, astigmatism curve, and distortion curve of the camera lens assembly according to Example 5 of the present application in close-up state II (for example, the distance between the subject and the camera lens assembly is 150 mm);

[0042] Figure 21 1 shows a schematic structural diagram of a camera lens assembly according to Example 6 of the present application;

[0043] Figures 22A to 22C axial chromatic aberration curve, astigmatism curve, and distortion curve of the camera lens assembly according to Example 6 of the present application in a telephoto state (for example, when the subject is at infinity from the camera lens assembly);

[0044] Figures 23A to 23C axial chromatic aberration curve, astigmatism curve, and distortion curve of the camera lens assembly according to Example 6 of the present application in close-up state I (for example, the distance between the subject and the camera lens assembly is 800 mm);

[0045] Figures 24A to 24Caxial chromatic aberration curve, astigmatism curve, and distortion curve of the camera lens assembly according to Example 6 of the present application in close-up state II (for example, the distance between the subject and the camera lens assembly is 150 mm);

[0046] Figure 25 1 shows a schematic structural diagram of a camera lens assembly according to Example 7 of the present application;

[0047] Figures 26A to 26C axial chromatic aberration curve, astigmatism curve, and distortion curve of the camera lens assembly according to Example 7 of the present application in a telephoto state (for example, when the subject is at infinity from the camera lens assembly);

[0048] Figures 27A to 27C axial chromatic aberration curve, astigmatism curve, and distortion curve of the camera lens assembly in close-up state I (for example, the distance between the subject and the camera lens assembly is 800 mm) according to Example 7 of the present application are respectively shown; and

[0049] Figures 28A to 28C The axial chromatic aberration curve, the astigmatism curve, and the distortion curve of the camera lens group in close-up state II (for example, the distance between the subject and the camera lens group is 150 mm) according to Example 7 of the present application are respectively shown. DETAILED DESCRIPTION

[0050] In order to better understand the present application, various aspects of the present application are described in detail 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.

[0051] In the drawings, the thickness, size, and shape of the lenses are slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical and aspherical surfaces shown in the drawings are provided by way of example. That is, the shapes of the spherical and aspherical surfaces are not limited to those shown in the drawings. The drawings are for illustration only and are not drawn strictly to scale.

[0052] In this article, the paraxial region refers to the area near the optical axis. If a lens surface is convex and the location of the convex surface is undefined, it means that the lens surface is convex at least in the paraxial region. If a lens surface is concave and the location of the concave surface is undefined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the subject is called the object-side surface of the lens, and the surface of each lens closest to the image plane is called the image-side surface of the lens.

[0053] It should also be understood that the terms "include," "comprising," "having," "including," and / or "comprising," when used in this specification, indicate 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. It should be noted that in this specification, the terms "first," "second," "third," and so on, are used only to distinguish one feature from another, and do not represent any limitation on the features.

[0054] Unless otherwise defined, all terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. Terms should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology and will not be interpreted in an idealized or overly formal sense unless expressly defined as such herein.

[0055] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this 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.

[0056] The first aspect of the present application provides a camera lens assembly comprising a first lens group, a second lens group, and a third lens group in order from the object side to the image plane along the optical axis. Adjacent lens groups from the first lens group to the third lens group may have air spaces on the optical axis.

[0057] The first and third lens groups are fixed relative to the image plane on the optical axis. The second lens group is movable relative to the first lens group along the optical axis, meaning that the distance of the second lens group relative to the first lens group on the optical axis is adjustable. As the distance between the subject and the camera lens group decreases, adjusting the distance on the optical axis between the second lens group and the first lens group allows the camera lens group to switch between telephoto and macro modes, achieving focus adjustment of the camera lens group.

[0058] In example embodiments, the first lens group may include a first lens having optical power.

[0059] In an exemplary embodiment, the second lens group may have positive refractive power and include, in order from the object side to the image plane along the optical axis, a second lens having positive refractive power, a third lens having negative refractive power, a fourth lens having negative refractive power, a fifth lens having refractive power, and a sixth lens having positive refractive power.

[0060] In example embodiments, the third lens group may include a seventh lens having negative power.

[0061] In an exemplary embodiment, the total effective focal length fi of the camera lens group in the telephoto state and the effective focal length FG1 of the first lens group may satisfy: 0 < fi / |FG1| ≤ 0.1. Reasonably configuring the ratio of the total effective focal length of the camera lens group in the telephoto state to the effective focal length of the first lens group can make the optical power distribution of the first lens account for a relatively small proportion, which is beneficial to reducing the assembly sensitivity of the first lens group and ensuring good assemblability of the camera lens group.

[0062] In an exemplary embodiment, the sum ∑T13 of the air gaps on the optical axis between adjacent two lens groups among the first lens group to the third lens group and the difference △f between the total effective focal lengths of the camera lens group in the telephoto state and the close-up state may satisfy: 5.0 < ∑T13 / △f ≤ 6.5. Reasonably configuring the ratio of the sum of the air gaps on the optical axis between adjacent two lens groups among the first lens group to the third lens group to the difference between the total effective focal lengths of the camera lens group in the telephoto state and the close-up state is beneficial to reasonably distributing the axial air gaps between the three lens groups and balancing the focusing movement stroke and the focusing range to a certain extent. Through the overall combination of the three lens groups, while ensuring the performance of the camera lens group, the camera lens group can have characteristics such as a small focusing movement stroke and easy processing.

[0063] In an exemplary embodiment, the total effective focal length fi of the camera lens group in the telephoto state and the effective focal length FG2 of the second lens group may satisfy: 1.0 < fi / FG2 ≤ 1.3. Reasonably configuring the ratio of the total effective focal length of the camera lens group in the telephoto state to the effective focal length of the second lens group is beneficial to ensuring that the camera lens group obtains a larger focusing range and a smaller group movement distance. When the effective focal length of the second lens group decreases, the group movement distance required for focusing to the same close distance can be effectively reduced; when the effective focal length of the second lens group increases, within the same group movement distance, the camera lens group may not be able to focus to a sufficiently close range.

[0064] In an exemplary embodiment, the combined focal length f45 of the fourth lens and the fifth lens and the effective focal length FG2 of the second lens group may satisfy: -10 ≤ f45 / FG2 ≤ -4.5. Reasonably configuring the ratio of the combined focal length of the fourth lens and the fifth lens to the effective focal length of the second lens group is beneficial to reducing the spherical aberration of the camera lens group and improving the imaging quality of the camera lens group.

[0065] In an exemplary embodiment, the combined focal length f23 of the second lens and the third lens and the effective focal length FG2 of the second lens group may satisfy: 1.3 ≤ f23 / FG2 ≤ 1.6. Reasonably configuring the ratio of the combined focal length of the second lens and the third lens to the effective focal length of the second lens group is beneficial to controlling the axial chromatic aberration of the camera lens group and improving the imaging quality of the camera lens group.

[0066] In an exemplary embodiment, the effective focal length f6 of the sixth lens and the effective focal length FG2 of the second lens group may satisfy: 1.2 ≤ f6 / FG2 < 1.7. Reasonably configuring the ratio of the effective focal length of the sixth lens to the effective focal length of the second lens group is beneficial to reducing the axial spherical aberration of the camera lens group and improving the imaging quality of the camera lens group.

[0067] In an exemplary embodiment, the total effective focal length fi of the camera lens group in the telephoto state and the effective focal length FG3 of the third lens group may satisfy: -1.5 < fi / FG3 ≤ -1.0. Reasonably configuring the ratio of the total effective focal length of the camera lens group in the telephoto state to the effective focal length of the third lens group is beneficial to balancing the field curvature and distortion of the camera lens group, reducing the aberration of the camera lens group, and thus ensuring that the camera lens group obtains good imaging quality.

[0068] In an exemplary embodiment, the axial distance Td2 from the object side of the second lens to the image side of the sixth lens, the air gap T34 between the third lens and the fourth lens on the optical axis, and the air gap T56 between the fifth lens and the sixth lens on the optical axis may satisfy: 3.0 < Td2 / (T34 + T56) < 4.5. By controlling the relationship between the axial distance from the object side of the second lens to the image side of the sixth lens, the air gap between the third lens and the fourth lens on the optical axis, and the air gap between the fifth lens and the sixth lens on the optical axis, it is beneficial to reasonably distribute the air gaps between adjacent lenses from the second lens to the sixth lens, thereby ensuring that the camera lens group satisfies good processing and assembly characteristics.

[0069] In an exemplary embodiment, the central thickness CT2 of the second lens on the optical axis, the central thickness CT3 of the third lens on the optical axis, and the air gap T34 between the third lens and the fourth lens on the optical axis may satisfy: 1.2 < (CT2 + CT3) / T34 < 2.0. Reasonably configuring the ratio of the sum of the central thicknesses of the second lens and the third lens to the air gap between the third lens and the fourth lens on the optical axis can make the structure of the camera lens group more compact, which is beneficial to reducing the overall optical length of the camera lens group and realizing the miniaturization of the camera lens.

[0070] In an exemplary embodiment, the sum ∑CT of the central thicknesses of each lens from the first lens to the seventh lens on the optical axis and the central thickness CT1 of the first lens on the optical axis may satisfy: 9.5 < ∑CT / CT1 < 13.5. Reasonably configuring the ratio of the sum of the central thicknesses of each lens from the first lens to the seventh lens on the optical axis to the central thickness of the first lens on the optical axis is beneficial to ensuring the compact structure of the camera lens group and improving the processability of the first lens.

[0071] In an exemplary embodiment, the sum ∑CT of the central thicknesses of each of the first lens to the seventh lens on the optical axis and the central thickness CT7 of the seventh lens on the optical axis may satisfy: 5.0 ≤ ∑CT / CT7 < 6.0. Reasonably configuring the ratio of the sum of the central thicknesses of each of the first lens to the seventh lens on the optical axis to the central thickness of the seventh lens on the optical axis is beneficial to ensuring the compact structure of the camera lens group and improving the processability of the seventh lens.

[0072] In an exemplary embodiment, the dispersion coefficient V3 of the third lens, the dispersion coefficient V4 of the fourth lens, and the dispersion coefficient V5 of the fifth lens may satisfy: 0.8 ≤ (V5 - V4) / (V5 - V3) ≤ 1.0. Reasonably configuring the mutual relationship between the dispersion coefficients of the third lens, the fourth lens, and the fifth lens is beneficial to reducing the chromatic aberration of the camera lens group and improving the imaging quality of the camera lens group.

[0073] In an exemplary embodiment, the dispersion coefficient V2 of the second lens, the dispersion coefficient V3 of the third lens, the dispersion coefficient V4 of the fourth lens, the dispersion coefficient V5 of the fifth lens, and the dispersion coefficient V6 of the sixth lens satisfy: 1.0 < (V2 + V6) / (V3 + V4 + V5) < 1.5. By controlling the mutual relationship between the dispersion coefficients of the second lens to the sixth lens, the position of the low-dispersion lens in the second lens group can be allocated, which is beneficial to reducing the dispersion of the camera lens group and improving the imaging quality of the camera lens group.

[0074] In an exemplary embodiment, the axial distance TTL from the object side surface of the first lens to the image surface and the difference △f between the total effective focal lengths of the camera lens group in the telephoto state and the close-up state may satisfy: 20 < TTL / △f ≤ 28. Reasonably configuring the ratio of the axial distance from the object side surface of the first lens to the image surface to the difference between the total effective focal lengths of the camera lens group in the telephoto state and the close-up state enables the camera lens group to obtain a suitable focusing range under limited size constraints, thereby ensuring good shooting effects at a certain close distance and not suffering too much loss in imaging quality at infinity.

[0075] In an exemplary embodiment, the sum ∑AT of the air gaps on the optical axis between adjacent two of the first lens to the seventh lens and the movable distance △T of the second lens group when the camera lens group switches between the telephoto state and the close-up state may satisfy: 12 < ∑AT / △T < 15. Reasonably configuring the ratio of the sum of the air gaps on the optical axis between adjacent two of the first lens to the seventh lens to the movable distance of the second lens group when the camera lens group switches between the telephoto state and the close-up state can avoid the assembly interference problem of the lens and the lens group while ensuring a certain focusing range for the camera lens group, which is beneficial to ensuring the assemblability of the camera lens group.

[0076] In an exemplary embodiment, the difference Δf between the total effective focal lengths of the camera lens assembly in the telephoto and macro modes and the movable distance ΔT of the second lens group when the camera lens assembly switches between the telephoto and macro modes may satisfy the following relationship: 1.0 ≤ Δf / ΔT ≤ 1.5. Properly configuring the ratio of the difference between the total effective focal lengths of the camera lens assembly in the telephoto and macro modes to the movable distance of the second lens group when the camera lens assembly switches between the telephoto and macro modes facilitates achieving a sufficiently large focus range for the camera lens assembly while maintaining a relatively small group movement distance.

[0077] In an exemplary embodiment, the camera lens group further includes an aperture stop, which may be disposed between the first lens group and the second lens group.

[0078] The camera lens assembly according to the above-described embodiment of the present application can utilize multiple lenses, such as the seven lenses described above. By rationally allocating optical parameters such as the focal power and surface shape of each lens, the center thickness of each lens, and the on-axis spacing between lenses, the camera lens assembly can achieve a larger focus range and a smaller group movement distance, thereby ensuring the assembly of the camera lens assembly, improving the imaging quality of the camera lens assembly, and achieving miniaturization of the camera lens assembly.

[0079] In an embodiment of the present application, at least one of the surfaces of each of the first through seventh lenses is an aspheric surface. Aspheric lenses are characterized by a continuously varying curvature from the center to the periphery. Unlike spherical lenses, which have a constant curvature from the center to the periphery, aspheric lenses have a better curvature radius characteristic, with the advantages of reducing distortion and astigmatism. The use of aspheric lenses minimizes aberrations that occur during imaging, thereby improving image quality.

[0080] 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.

[0081] A second aspect of the present application provides a camera lens assembly comprising, in order from the object side to the image plane along the optical axis, a first lens group, a second lens group having positive optical power, and a third lens group. The first lens group includes a first lens having optical power; the second lens group includes a second lens having positive optical power, a third lens having negative optical power, a fourth lens having negative optical power, a fifth lens having optical power, and a sixth lens having positive optical power; and the third lens group includes a seventh lens having negative optical power. The positions of the first and third lens groups on the optical axis relative to the image plane are fixed, and the distance of the second lens group on the optical axis relative to the first lens group is adjustable.

[0082] Among them, the total effective focal length fi of the camera lens group in the telephoto state and the effective focal length FG2 of the second lens group can satisfy: 1.0 < fi / FG2 ≤ 1.3, and the sum ∑AT of the air gaps on the optical axis between adjacent two lenses among the first lens to the seventh lens and the movable distance △T of the second lens group when the camera lens group switches between the telephoto state and the close-up state can satisfy: 12 < ∑AT / △T < 15. The camera lens group provided by this application includes three relatively independent lens groups. When the distance between the object and the camera lens group changes from far to near, by moving the second lens group, the camera lens group can be switched between the telephoto state and the close-up state to achieve the focusing and defocusing of the camera lens group. Moreover, by restricting the ratio of the effective focal lengths of the second lens group, it is beneficial to ensure that the camera lens group obtains a larger focusing range and a smaller group moving distance; at the same time, by reasonably configuring the ratio of the sum of the air gaps on the optical axis between adjacent two lenses among the first lens to the seventh lens and the movable distance of the second lens group when the camera lens group switches between the telephoto state and the close-up state, the problem of assembly interference of lenses and groups can be avoided while ensuring a certain focusing range of the camera lens group, which is beneficial to ensuring the assemblability of the camera lens group.

[0083] The third aspect of this application provides such a camera lens group, which sequentially includes a first lens group, a second lens group with positive optical power, and a third lens group along the optical axis from the object side to the image plane. The first lens group includes a first lens with optical power; the second lens group includes a second lens with positive optical power, a third lens with negative optical power, a fourth lens with negative optical power, a fifth lens with optical power, and a sixth lens with positive optical power; the third lens group includes a seventh lens with negative optical power. The positions of the first lens group and the third lens group on the optical axis relative to the image plane are fixed, and the distance of the second lens group on the optical axis relative to the first lens group is adjustable.

[0084] Among them, the difference Δf between the total effective focal lengths of the camera lens group in the telephoto state and the close-up state and the movable distance ΔT of the second lens group when the camera lens group switches between the telephoto state and the close-up state satisfy: 1.0 ≤ Δf / ΔT ≤ 1.5. The on-axis distance TTL from the object side of the first lens to the image plane and the difference Δf between the total effective focal lengths of the camera lens group in the telephoto state and the close-up state satisfy: 20 < TTL / Δf ≤ 28. The camera lens group provided by this application includes three relatively independent lens groups. When the distance between the object to be photographed and the camera lens group changes from far to near, by moving the second lens group, the camera lens group can be switched between the telephoto state and the close-up state, realizing the focusing and defocusing of the camera lens group. Moreover, by controlling the ratio of the difference between the total effective focal lengths of the camera lens group in the telephoto state and the close-up state to the movable distance of the second lens group when the camera lens group switches between the telephoto state and the close-up state, it is beneficial for the camera lens group to obtain a sufficient large focusing range with a small group movement distance. At the same time, by reasonably configuring the ratio of the on-axis distance from the object side of the first lens to the image plane to the difference between the total effective focal lengths of the camera lens group in the telephoto state and the close-up state, within the limited size limit, the focusing range obtained by the camera lens group can be made more appropriate, so as to ensure that the camera lens group has a good shooting effect at a certain close distance and the imaging quality at infinity will not be greatly damaged.

[0085] The following further describes specific embodiments of the camera lens group applicable to the above embodiments with reference to the accompanying drawings.

[0086] Example 1

[0087] The following refers to Figures 1 to 4C Describe the camera lens group according to Embodiment 1 of the present application.

[0088] As Figure 1 shown, the camera lens group sequentially includes a first lens group G1, a second lens group G2 with positive optical power, and a third lens group G3 with negative optical power along the optical axis from the object side to the image plane. The positions of the first lens group G1 and the third lens group G3 on the optical axis relative to the image plane are fixed. The second lens group G2 is movable along the optical axis relative to the first lens group G1. When the distance between the object to be photographed and the camera lens group changes from far to near, by adjusting the distance between the second lens group G2 and the first lens group G1 on the optical axis, the camera lens group can be switched between the telephoto state and the close-up state, realizing the focusing and defocusing of the camera lens group.

[0089] The first lens group G1 includes a first lens E1. The second lens group G2 includes a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, and a sixth lens E6 arranged in sequence along the optical axis from the object side to the image plane. The third lens group G3 includes a seventh lens E7. The second lens group G2 may also be provided with an aperture STO.

[0090] The first lens E1 has negative optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being convex. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has negative optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has positive optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being concave and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from the object passes through each of the surfaces S1 to S16 in sequence and is ultimately imaged on the image surface S17.

[0091] Table 1 shows the basic parameters of the camera lens assembly of Example 1, wherein the units of curvature radius, thickness / distance and focal length are all millimeters (mm).

[0092]

[0093] Table 1

[0094] In this embodiment, the object-side surface and the image-side surface of any lens among the first lens E1 to the seventh lens E7 are both aspherical surfaces. The surface shape x of each aspherical lens can be defined by, but is not limited to, the following aspherical surface formula:

[0095]

[0096] Wherein, x is the distance vector height of the aspheric surface from the vertex of the aspheric surface 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 inverse 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 shows 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, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A50, A51, A52, A53, A54, A55, A56, A57, A58, A59, A60, A61, A71, A72, A73, A74, A75, A80, A81, A9, A10, A11, A12, A13, A14, A15 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A 24 、A 26 、A 28 and A 30 .

[0097]

[0098]

[0099] Table 2

[0100] In this embodiment, the total effective focal length fi of the camera lens group in the telephoto state is 8.35 mm, and the difference Δf between the total effective focal lengths of the camera lens group in the telephoto state and the macro state is 0.42 mm.

[0101] Table 3 shows the distance U between the subject and the imaging lens assembly, the air gap D1 between the first and second lens groups on the optical axis, and the air gap D2 between the second and third lens groups on the optical axis, in Example 1. U, D1, and D2 are all in millimeters (mm). When U is infinity, the imaging lens assembly is in telephoto mode; when U is 800mm, the imaging lens assembly is in macro mode I; and when U is 150mm, the imaging lens assembly is in macro mode II.

[0102] Object distance Infinity 800 150 D1 1.0093 0.9483 0.6735 D2 1.8103 1.8713 2.1461

[0103] Table 3

[0104] Figure 2A The axial chromatic aberration curve of the camera lens set of Example 1 in the telephoto state is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the camera lens set. Figure 2B The astigmatism curve of the imaging lens set of Example 1 in the telephoto state is shown, which indicates the meridional image curvature and sagittal image curvature corresponding to different image heights. Figure 2C The distortion curve of the camera lens set of Example 1 in the telephoto state is shown, which indicates the distortion magnitude values ​​corresponding to different image heights. Figures 2A to 2C It can be seen that the camera lens assembly of Example 1 can achieve good imaging quality in the telephoto state.

[0105] Figure 3A The axial chromatic aberration curve of the camera lens set of Example 1 in the close-up state I is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the camera lens set. Figure 3B The astigmatism curve of the camera lens set of Example 1 in the close-up state I is shown, which represents the meridional image plane curvature and sagittal image plane curvature corresponding to different image heights. Figure 3C The distortion curve of the camera lens set of Example 1 in the close-up state I is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figures 3A to 3C It can be seen that the camera lens assembly of Example 1 can achieve good imaging quality in the close-up state I.

[0106] Figure 4A The axial chromatic aberration curve of the camera lens set of Example 1 in the close-up state II is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the camera lens set. Figure 4BThe astigmatism curve of the camera lens set of Example 1 in the close-up state II is shown, which represents the meridional image plane curvature and sagittal image plane curvature corresponding to different image heights. Figure 4C The distortion curve of the camera lens set of Example 1 in the close-up state II is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figures 4A to 4C It can be seen that the camera lens assembly of Example 1 can achieve good imaging quality in the macro state II.

[0107] Example 2

[0108] The following reference Figures 5 to 8C A camera lens assembly according to Example 2 of the present application will be described.

[0109] like Figure 5 As shown, the camera lens group may include, in order from the object side to the image plane along the optical axis, a first lens group G1, a second lens group G2 with positive optical power, and a third lens group G3 with negative optical power. The first lens group G1 and the third lens group G3 are fixed on the optical axis relative to the image plane. The second lens group G2 is movable along the optical axis relative to the first lens group G1. As the distance between the subject and the camera lens group decreases from far to near, adjusting the distance on the optical axis between the second lens group G2 and the first lens group G1 enables the camera lens group to switch between telephoto and macro modes, thereby achieving focus adjustment of the camera lens group.

[0110] The first lens group G1 includes a first lens E1. The second lens group G2 includes a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, and a sixth lens E6, arranged in order along the optical axis from the object side to the image plane. The third lens group G3 includes a seventh lens E7. The second lens group G2 may also be provided with a stop STO.

[0111] The first lens E1 has negative optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being convex. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has negative optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being concave and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from the object passes through each of the surfaces S1 to S16 in sequence and is ultimately imaged on the image surface S17.

[0112] Table 4 shows the basic parameters of the camera lens assembly of Example 2, wherein the units of curvature radius, thickness / distance and focal length are all millimeters (mm).

[0113]

[0114] Table 4

[0115] In this embodiment, the object side surface and the image side surface of any lens from the first lens E1 to the seventh lens E7 are all aspherical surfaces. Table 5 lists 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, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A56, A57, A58, A5 10 , A12, A14, A16, A18, A20, A22, A24, , A26, A28 and A30.

[0116] Face number A4 A6 A8 A10 A12 A14 A16 S1 -4.5409E-03 -4.8433E-06 -1.8181E-04 9.7366E-05 -2.8100E-05 4.9076E-06 -5.0900E-07 S2 -4.3681E-03 -2.2182E-04 -1.9402E-04 1.5820E-04 -5.9796E-05 1.3162E-05 -1.6897E-06 S3 1.7961E-03 -1.1747E-04 7.1068E-05 -2.8523E-05 9.1502E-06 -1.6190E-06 1.4846E-07 S4 -1.1977E-03 6.4534E-03 -6.1667E-03 3.5486E-03 -1.3345E-03 3.3011E-04 -5.1661E-05 S5 -1.1296E-02 9.3050E-03 -7.7786E-03 4.8779E-03 -2.2138E-03 7.2232E-04 -1.6399E-04 S6 -1.0136E-02 3.9667E-03 -1.3825E-03 2.6445E-04 1.2427E-04 -1.2465E-04 5.1615E-05 S7 -6.7957E-03 2.2507E-03 -1.9643E-03 5.0784E-04 1.7437E-04 -1.8348E-04 6.5855E-05 S8 -1.7309E-02 1.4531E-02 -1.2922E-02 8.6390E-03 -4.3710E-03 1.6416E-03 -4.5000E-04 S9 -3.5179E-02 1.9500E-02 -1.0572E-02 4.6568E-03 -1.5336E-03 3.5868E-04 -5.7122E-05 S10 -3.8711E-02 1.1662E-02 -2.7104E-03 -9.4822E-05 4.1049E-04 -1.8098E-04 4.3964E-05 S11 -1.4527E-02 2.9639E-03 -9.5965E-04 2.8209E-04 -6.6665E-05 1.1476E-05 -1.3929E-06 S12 2.6514E-03 -9.5501E-05 -3.9723E-04 1.7518E-04 -4.4773E-05 7.6275E-06 -9.0843E-07 S13 -2.8714E-02 4.9035E-03 -7.1132E-04 8.5680E-05 -7.6859E-06 5.0389E-07 -2.4399E-08 S14 -3.3135E-02 6.9303E-03 -1.2250E-03 1.6109E-04 -1.5387E-05 1.0700E-06 -5.4613E-08 Face number A18 A20 A22 A24 A26 A28 A30 S1 2.8726E-08 -6.7846E-10 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 1.1679E-07 -3.3547E-09 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 -7.1657E-09 5.1020E-10 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 4.6331E-06 -1.8088E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 2.4380E-05 -2.1150E-06 8.0537E-08 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 -1.2129E-05 1.5558E-06 -8.4268E-08 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 -1.2724E-05 1.3265E-06 -5.8869E-08 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S8 8.8413E-05 -1.2086E-05 1.0889E-06 -5.7968E-08 1.3773E-09 0.0000E+00 0.0000E+00 S9 6.0799E-06 -4.4232E-07 2.4223E-08 -1.0658E-09 2.7018E-11 0.0000E+00 0.0000E+00 S10 -6.6775E-06 6.4589E-07 -3.8660E-08 1.3064E-09 -1.9075E-11 0.0000E+00 0.0000E+00 S11 1.1674E-07 -6.4983E-09 2.1756E-10 -2.9121E-12 -6.2617E-14 2.9335E-15 -3.2601E-17 S12 7.7352E-08 -4.7391E-09 2.0725E-10 -6.3105E-12 1.2703E-13 -1.5185E-15 8.1566E-18 S13 8.8084E-10 -2.3711E-11 4.7018E-13 -6.6735E-15 6.4157E-17 -3.7409E-19 9.9817E-22 S14 2.0549E-09 -5.6829E-11 1.1399E-12 -1.6117E-14 1.5218E-16 -8.6057E-19 2.2024E-21

[0117] Table 5

[0118] In this embodiment, the total effective focal length fi of the camera lens group in the telephoto state is 8.35 mm, and the difference Δf between the total effective focal lengths of the camera lens group in the telephoto state and the macro state is 0.45 mm.

[0119] Table 6 shows the distance U between the subject and the imaging lens assembly, the air gap D1 between the first and second lens groups on the optical axis, and the air gap D2 between the second and third lens groups on the optical axis, for Example 2. U, D1, and D2 are all in millimeters (mm). When U is infinity, the imaging lens assembly is in telephoto mode; when U is 800mm, the imaging lens assembly is in macro mode I; and when U is 150mm, the imaging lens assembly is in macro mode II.

[0120] Object distance Infinity 800 150 D1 1.0416 0.9813 0.7083 D2 1.8759 1.9362 2.2092

[0121] Table 6

[0122] Figure 6A The axial chromatic aberration curve of the camera lens set of Example 2 in the telephoto state is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the camera lens set. Figure 6B The astigmatism curve of the imaging lens set of Example 2 in the telephoto state is shown, which indicates the meridional image curvature and sagittal image curvature corresponding to different image heights. Figure 6C The distortion curve of the telephoto state of the camera lens set of Example 2 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figures 6A to 6C It can be seen that the camera lens assembly of Example 2 can achieve good imaging quality in the telephoto state.

[0123] Figure 7AThe axial chromatic aberration curve of the camera lens set of Example 2 in the close-up state I is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the camera lens set. Figure 7B The astigmatism curve of the camera lens set of Example 2 in the close-up state I is shown, which represents the meridional image plane curvature and sagittal image plane curvature corresponding to different image heights. Figure 7C The distortion curve of the close-up state I of the camera lens set of Example 2 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. 7A to 7C It can be seen that the camera lens group of Example 2 can achieve good imaging quality in the close-up state I.

[0124] Figure 8A The axial chromatic aberration curve of the camera lens assembly in the close-up state II of Example 2 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the camera lens assembly. Figure 8B The astigmatism curve of the camera lens set of Example 2 in the close-up state II is shown, which represents the meridional image plane curvature and sagittal image plane curvature corresponding to different image heights. Figure 8C The distortion curve of the close-up state II of the camera lens set of Example 2 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figures 8A to 8C It can be seen that the camera lens assembly of Example 2 can achieve good imaging quality in the macro state II.

[0125] Example 3

[0126] The following reference Figures 9 to 12C A camera lens set according to Example 3 of the present application will be described.

[0127] like Figure 9 As shown, the camera lens group may include, in order from the object side to the image plane along the optical axis, a first lens group G1, a second lens group G2 with positive optical power, and a third lens group G3 with negative optical power. The first lens group G1 and the third lens group G3 are fixed on the optical axis relative to the image plane. The second lens group G2 is movable along the optical axis relative to the first lens group G1. As the distance between the subject and the camera lens group decreases from far to near, adjusting the distance on the optical axis between the second lens group G2 and the first lens group G1 enables the camera lens group to switch between telephoto and macro modes, thereby achieving focus adjustment of the camera lens group.

[0128] The first lens group G1 includes a first lens E1. The second lens group G2 includes a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, and a sixth lens E6, arranged in order along the optical axis from the object side to the image plane. The third lens group G3 includes a seventh lens E7. The second lens group G2 may also be provided with a stop STO.

[0129] The first lens E1 has negative optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being convex. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has negative optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from the object passes through each of the surfaces S1 to S16 in sequence and is ultimately imaged on the image surface S17.

[0130] Table 7 shows the basic parameters of the camera lens assembly of Example 3, wherein the units of curvature radius, thickness / distance and focal length are all millimeters (mm).

[0131]

[0132]

[0133] Table 7

[0134] In this embodiment, the object side surface and the image side surface of any lens from the first lens E1 to the seventh lens E7 are all aspherical surfaces. Table 8 lists 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, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A56, A57, A58, A5 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A 24 、A 26 、A 28 and A 30 .

[0135] Face number A4 A6 A8 A10 A12 A14 A16 S1 -4.3319E-03 -1.9088E-04 6.8345E-05 -1.3657E-05 1.9734E-06 -1.7814E-07 8.7244E-09 S2 -4.2176E-03 -4.1688E-04 1.6687E-04 -4.1040E-05 6.8678E-06 -7.0866E-07 3.9982E-08 S3 1.4678E-03 -5.2892E-04 4.3603E-04 -2.2941E-04 8.0752E-05 -1.8400E-05 2.6527E-06 S4 -3.8724E-03 7.2404E-03 -5.6443E-03 2.9219E-03 -1.0182E-03 2.3444E-04 -3.3959E-05 S5 -1.4032E-02 9.8207E-03 -6.2320E-03 3.0136E-03 -1.0277E-03 2.3712E-04 -3.5019E-05 S6 -1.1513E-02 5.0946E-03 -2.4565E-03 1.3043E-03 -5.8904E-04 1.9425E-04 -4.1265E-05 S7 -1.0478E-02 9.0836E-04 -5.4124E-04 1.9335E-04 -3.5731E-05 3.6399E-06 -3.2985E-07 S8 -1.1453E-02 1.6472E-03 2.1273E-04 -1.3512E-03 1.2892E-03 -6.9689E-04 2.4530E-04 S9 -1.3858E-02 5.6990E-03 -1.9466E-03 4.8903E-04 -9.0828E-05 1.2026E-05 -1.0703E-06 S10 -3.4649E-02 1.0445E-02 -2.6004E-03 4.6882E-04 -4.7033E-05 -8.2344E-07 1.0242E-06 S11 -1.7626E-02 3.1493E-03 -6.5621E-04 9.9856E-05 -1.2467E-05 1.3113E-06 -1.1320E-07 S12 4.5865E-03 -1.9232E-03 3.4215E-04 -5.5444E-05 6.5729E-06 -5.0155E-07 1.9930E-08 S13 -2.2789E-02 2.9528E-03 -3.1429E-04 2.8890E-05 -1.9333E-06 8.4048E-08 -1.9558E-09 S14 -2.3691E-02 3.6738E-03 -5.0233E-04 5.3894E-05 -4.3658E-06 2.6314E-07 -1.1782E-08 Face number A18 A20 A22 A24 A26 A28 A30 S1 -1.7572E-10 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 -9.3799E-10 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 -2.2227E-07 8.4972E-09 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 2.7936E-06 -9.8924E-08 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 2.9868E-06 -1.1215E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 4.9757E-06 -2.5662E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 7.3776E-08 -6.3444E-09 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S8 -5.8083E-05 9.1993E-06 -9.3579E-07 5.5345E-08 -1.4482E-09 0.0000E+00 0.0000E+00 S9 6.1369E-08 -2.3858E-09 8.7548E-11 -3.4633E-12 7.3236E-14 0.0000E+00 0.0000E+00 S10 -1.5502E-07 1.2313E-08 -5.6493E-10 1.4158E-11 -1.5046E-13 0.0000E+00 0.0000E+00 S11 7.5657E-09 -3.6417E-10 1.1635E-11 -2.1828E-13 1.8060E-15 0.0000E+00 0.0000E+00 S12 1.7682E-10 -7.0881E-11 4.1920E-12 -1.2854E-13 2.1149E-15 -1.4801E-17 0.0000E+00 S13 -5.6587E-12 2.1381E-12 -7.9418E-14 1.6118E-15 -1.9757E-17 1.3802E-19 -4.2499E-22 S14 3.9246E-10 -9.6970E-12 1.7554E-13 -2.2646E-15 1.9730E-17 -1.0406E-19 2.5093E-22

[0136] Table 8

[0137] In this embodiment, the total effective focal length fi of the camera lens group in the telephoto state is 8.60 mm, and the difference Δf between the total effective focal lengths of the camera lens group in the telephoto state and the macro state is 0.42 mm.

[0138] Table 9 shows the distance U between the subject and the imaging lens assembly, the air gap D1 between the first and second lens groups on the optical axis, and the air gap D2 between the second and third lens groups on the optical axis, for Example 3. U, D1, and D2 are all in millimeters (mm). When U is infinity, the imaging lens assembly is in telephoto mode; when U is 300mm, the imaging lens assembly is in macro mode I; and when U is 150mm, the imaging lens assembly is in macro mode II.

[0139] Object distance Infinity 300 150 D1 1.1643 0.9773 0.7803 D2 2.1192 2.3062 2.5032

[0140] Table 9

[0141] Figure 10A The axial chromatic aberration curve of the camera lens set of Example 3 in the telephoto state is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the camera lens set. Figure 10B The astigmatism curve of the imaging lens set of Example 3 in the telephoto state is shown, which indicates the meridional image curvature and sagittal image curvature corresponding to different image heights. Figure 10C The distortion curve of the camera lens set of Example 3 in the telephoto state is shown, which indicates the distortion magnitude values ​​corresponding to different image heights. 10A to 10C It can be seen that the camera lens assembly of Example 3 can achieve good imaging quality in the telephoto state.

[0142] Figure 11A The axial chromatic aberration curve of the camera lens set of Example 3 in the close-up state I is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the camera lens set. Figure 11B The astigmatism curve of the camera lens set of Example 3 in the close-up state I is shown, which represents the meridional image plane curvature and sagittal image plane curvature corresponding to different image heights. Figure 11C The distortion curve of the camera lens set of Example 3 in the close-up state I is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figures 11A to 11C It can be seen that the camera lens group of Example 3 can achieve good imaging quality in the close-up state I.

[0143] Figure 12A The axial chromatic aberration curve of the camera lens set of Example 3 in the close-up state II is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the camera lens set. Figure 12B The astigmatism curve of the camera lens set of Example 3 in the close-up state II is shown, which represents the meridional image plane curvature and sagittal image plane curvature corresponding to different image heights. Figure 12C The distortion curve of the camera lens set of Example 3 in the close-up state II is shown, which indicates the distortion magnitude values ​​corresponding to different image heights. 12A to 12C It can be seen that the camera lens assembly of Example 3 can achieve good imaging quality in the macro state II.

[0144] Example 4

[0145] The following reference Figures 13 to 16C A camera lens set according to Example 4 of the present application will be described.

[0146] like Figure 13 As shown, the camera lens group may include, in order from the object side to the image plane along the optical axis, a first lens group G1, a second lens group G2 with positive optical power, and a third lens group G3 with negative optical power. The first lens group G1 and the third lens group G3 are fixed on the optical axis relative to the image plane. The second lens group G2 is movable along the optical axis relative to the first lens group G1. As the distance between the subject and the camera lens group decreases from far to near, adjusting the distance on the optical axis between the second lens group G2 and the first lens group G1 enables the camera lens group to switch between telephoto and macro modes, thereby achieving focus adjustment of the camera lens group.

[0147] The first lens group G1 includes a first lens E1. The second lens group G2 includes a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, and a sixth lens E6, arranged in order along the optical axis from the object side to the image plane. The third lens group G3 includes a seventh lens E7. The second lens group G2 may also be provided with a stop STO.

[0148] The first lens E1 has negative optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being convex. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has negative optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from the object passes through surfaces S1 to S16 in sequence and is ultimately imaged on image surface S17.

[0149] Table 10 shows the basic parameters of the camera lens assembly of Example 4, wherein the units of curvature radius, thickness / distance and focal length are all millimeters (mm).

[0150]

[0151]

[0152] Table 10

[0153] In this embodiment, the object side surface and the image side surface of any lens from the first lens E1 to the seventh lens E7 are all aspherical surfaces. Table 11 lists the high-order coefficients A4, A6, A8, A9, A10, A111, 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, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A56, A57, A58, 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A 24 、A 26 、A 28 and A 30 .

[0154]

[0155]

[0156] Table 11

[0157] In this embodiment, the total effective focal length fi of the camera lens group in the telephoto state is 7.67 mm, and the difference Δf between the total effective focal lengths of the camera lens group in the telephoto state and the macro state is 0.36 mm.

[0158] Table 12 shows the distance U between the subject and the imaging lens assembly, the air gap D1 between the first and second lens groups on the optical axis, and the air gap D2 between the second and third lens groups on the optical axis, in Example 4. U, D1, and D2 are all in millimeters (mm). When U is infinity, the imaging lens assembly is in telephoto mode; when U is 800mm, the imaging lens assembly is in macro mode I; and when U is 150mm, the imaging lens assembly is in macro mode II.

[0159] Object distance Infinity 800 150 D1 0.9600 0.9087 0.6788 D2 1.6840 1.7352 1.9652

[0160] Table 12

[0161] Figure 14A The axial chromatic aberration curve of the camera lens set of Example 4 in the telephoto state is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the camera lens set. Figure 14B The astigmatism curve of the imaging lens set of Example 4 in the telephoto state is shown, which indicates the meridional image plane curvature and sagittal image plane curvature corresponding to different image heights. Figure 14C The distortion curve of the telephoto state of the camera lens set of Example 4 is shown, which represents the distortion value corresponding to different image heights. 14A to 14C It can be seen that the camera lens assembly of Example 4 can achieve good imaging quality in the telephoto state.

[0162] Figure 15AThe axial chromatic aberration curve of the camera lens set of Example 4 in the close-up state I is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the camera lens set. Figure 15B The astigmatism curve of the camera lens set of Example 4 in the close-up state I is shown, which represents the meridional image plane curvature and sagittal image plane curvature corresponding to different image heights. Figure 15C The distortion curve of the close-up state I of the camera lens set of Example 4 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figures 15A to 15C It can be seen that the camera lens group of Example 4 can achieve good imaging quality in the close-up state I.

[0163] Figure 16A The axial chromatic aberration curve of the camera lens set of Example 4 in the close-up state II is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the camera lens set. Figure 16B The astigmatism curve of the camera lens set of Example 4 in the close-up state II is shown, which represents the meridional image plane curvature and sagittal image plane curvature corresponding to different image heights. Figure 16C The distortion curve of the close-up state II of the camera lens set of Example 4 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. 16A to 16C It can be seen that the camera lens assembly of Example 4 can achieve good imaging quality in the macro state II.

[0164] Example 5

[0165] The following reference Figures 17 to 20C A camera lens set according to Example 5 of the present application will be described.

[0166] like Figure 17 As shown, the camera lens group may include, in order from the object side to the image plane along the optical axis, a first lens group G1, a second lens group G2 with positive optical power, and a third lens group G3 with negative optical power. The first lens group G1 and the third lens group G3 are fixed on the optical axis relative to the image plane. The second lens group G2 is movable along the optical axis relative to the first lens group G1. As the distance between the subject and the camera lens group decreases from far to near, adjusting the distance on the optical axis between the second lens group G2 and the first lens group G1 enables the camera lens group to switch between telephoto and macro modes, thereby achieving focus adjustment of the camera lens group.

[0167] The first lens group G1 includes a first lens E1. The second lens group G2 includes a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, and a sixth lens E6, arranged in order along the optical axis from the object side to the image plane. The third lens group G3 includes a seventh lens E7. The second lens group G2 may also be provided with a stop STO.

[0168] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has negative optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has positive optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being concave and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from the object sequentially passes through surfaces S1 to S16 and is ultimately imaged on image surface S17.

[0169] Table 13 shows the basic parameters of the camera lens assembly of Example 5, where the units of curvature radius, thickness / distance and focal length are all millimeters (mm).

[0170]

[0171] Table 13

[0172] In this embodiment, the object side surface and the image side surface of any lens from the first lens E1 to the seventh lens E7 are all aspherical surfaces. Table 14 lists 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, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A56, A57, A58, A 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A 24 、A 26 、A 28 and A 30 .

[0173]

[0174]

[0175] Table 14

[0176] In this embodiment, the total effective focal length fi of the camera lens group in the telephoto state is 8.35 mm, and the difference Δf between the total effective focal lengths of the camera lens group in the telephoto state and the macro state is 0.46 mm.

[0177] Table 15 shows the distance U between the subject and the imaging lens assembly, the air gap D1 between the first and second lens groups on the optical axis, and the air gap D2 between the second and third lens groups on the optical axis, for Example 5. U, D1, and D2 are all in millimeters (mm). When U is infinity, the imaging lens assembly is in telephoto mode; when U is 800mm, the imaging lens assembly is in macro mode I; and when U is 150mm, the imaging lens assembly is in macro mode II.

[0178] Object distance Infinity 800 150 D1 0.9464 0.8877 0.6276 D2 1.8073 1.8660 2.1261

[0179] Table 15

[0180] Figure 18A The axial chromatic aberration curve of the camera lens set of Example 5 in the telephoto state is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the camera lens set. Figure 18B The astigmatism curve of the camera lens set of Example 5 in the telephoto state is shown, which indicates the meridional image plane curvature and sagittal image plane curvature corresponding to different image heights. Figure 18C The distortion curve of the camera lens set of Example 5 in the telephoto state is shown, which represents the distortion magnitude values ​​corresponding to different image heights. 18A to 18C It can be seen that the camera lens assembly of Example 5 can achieve good imaging quality in the telephoto state.

[0181] Figure 19A The axial chromatic aberration curve of the camera lens set of Example 5 in the close-up state I is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the camera lens set. Figure 19B The astigmatism curve of the camera lens set of Example 5 in the close-up state I is shown, which represents the meridional image plane curvature and sagittal image plane curvature corresponding to different image heights. Figure 19C The distortion curve of the close-up state I of the camera lens set of Example 5 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. 19A to 19C It can be seen that the camera lens group of Example 5 can achieve good imaging quality in the close-up state I.

[0182] Figure 20A The axial chromatic aberration curve of the camera lens set of Example 5 in the close-up state II is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the camera lens set. Figure 20B The astigmatism curve of the camera lens set of Example 5 in the close-up state II is shown, which represents the meridional image plane curvature and sagittal image plane curvature corresponding to different image heights. Figure 20C The distortion curve of the close-up state II of the camera lens set of Example 5 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. 20A to 20C It can be seen that the camera lens assembly of Example 5 can achieve good imaging quality in the macro state II.

[0183] Example 6

[0184] The following reference Figures 21 to 24C A camera lens set according to Example 6 of the present application will be described.

[0185] like Figure 21 As shown, the camera lens group may include, in order from the object side to the image plane along the optical axis, a first lens group G1, a second lens group G2 with positive optical power, and a third lens group G3 with negative optical power. The first lens group G1 and the third lens group G3 are fixed on the optical axis relative to the image plane. The second lens group G2 is movable along the optical axis relative to the first lens group G1. As the distance between the subject and the camera lens group decreases from far to near, adjusting the distance on the optical axis between the second lens group G2 and the first lens group G1 enables the camera lens group to switch between telephoto and macro modes, thereby achieving focus adjustment of the camera lens group.

[0186] The first lens group G1 includes a first lens E1. The second lens group G2 includes a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, and a sixth lens E6, arranged in order along the optical axis from the object side to the image plane. The third lens group G3 includes a seventh lens E7. The second lens group G2 may also be provided with a stop STO.

[0187] The first lens E1 has negative optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being convex. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has negative optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has positive optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being concave and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from the object passes through each of the surfaces S1 to S16 in sequence and is ultimately imaged on the image surface S17.

[0188] Table 16 shows the basic parameters of the camera lens set of Example 6, where the units of curvature radius, thickness / distance and focal length are all millimeters (mm).

[0189]

[0190] Table 16

[0191] In this embodiment, the object side surface and the image side surface of any lens from the first lens E1 to the seventh lens E7 are all aspherical surfaces. Table 17 lists 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, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A56, A57, A58, A 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A 24 、A 26 、A 28 and A 30 .

[0192]

[0193]

[0194] Table 17

[0195] In this embodiment, the total effective focal length fi of the camera lens group in the telephoto state is 8.35 mm, and the difference Δf between the total effective focal lengths of the camera lens group in the telephoto state and the macro state is 0.48 mm.

[0196] Table 18 shows the distance U between the subject and the imaging lens assembly, the air gap D1 between the first and second lens groups on the optical axis, and the air gap D2 between the second and third lens groups on the optical axis in Example 6. U, D1, and D2 are all in millimeters (mm). When U is infinity, the imaging lens assembly is in telephoto mode; when U is 800mm, the imaging lens assembly is in macro mode I; and when U is 150mm, the imaging lens assembly is in macro mode II.

[0197] Object distance Infinity 800 150 D1 1.1309 1.0713 0.8054 D2 2.0548 2.1144 2.3803

[0198] Table 18

[0199] Figure 22A The axial chromatic aberration curve of the camera lens set of Example 6 in the telephoto state is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the camera lens set. Figure 22B The astigmatism curve of the imaging lens set of Example 6 in the telephoto state is shown, which indicates the meridional image plane curvature and sagittal image plane curvature corresponding to different image heights. Figure 22C The distortion curve of the telephoto state of the camera lens set of Example 6 is shown, which represents the distortion value corresponding to different image heights. Figures 22A to 22C It can be seen that the camera lens assembly of Example 6 can achieve good imaging quality in the telephoto state.

[0200] Figure 23AThe axial chromatic aberration curve of the camera lens set of Example 6 in the close-up state I is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the camera lens set. Figure 23B The astigmatism curve of the camera lens set of Example 6 in the close-up state I is shown, which represents the meridional image plane curvature and sagittal image plane curvature corresponding to different image heights. Figure 23C The distortion curve of the close-up state I of the camera lens set of Example 6 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figures 23A to 23C It can be seen that the camera lens group of Example 6 can achieve good imaging quality in the close-up state I.

[0201] Figure 24A The axial chromatic aberration curve of the camera lens set of Example 6 in the close-up state II is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the camera lens set. Figure 24B The astigmatism curve of the camera lens set of Example 6 in the close-up state II is shown, which represents the meridional image plane curvature and sagittal image plane curvature corresponding to different image heights. Figure 24C The distortion curve of the close-up state II of the camera lens set of Example 6 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figures 24A to 24C It can be seen that the camera lens assembly of Example 6 can achieve good imaging quality in the macro state II.

[0202] Example 7

[0203] The following reference Figures 25 to 28C A camera lens set according to Example 7 of the present application will be described.

[0204] like Figure 25 As shown, the camera lens group may include, in order from the object side to the image plane along the optical axis, a first lens group G1, a second lens group G2 with positive optical power, and a third lens group G3 with negative optical power. The first lens group G1 and the third lens group G3 are fixed on the optical axis relative to the image plane. The second lens group G2 is movable along the optical axis relative to the first lens group G1. As the distance between the subject and the camera lens group decreases from far to near, adjusting the distance on the optical axis between the second lens group G2 and the first lens group G1 enables the camera lens group to switch between telephoto and macro modes, thereby achieving focus adjustment of the camera lens group.

[0205] The first lens group G1 includes a first lens E1. The second lens group G2 includes a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, and a sixth lens E6, arranged in order along the optical axis from the object side to the image plane. The third lens group G3 includes a seventh lens E7. The second lens group G2 may also be provided with a stop STO.

[0206] The first lens E1 has negative optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being convex. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has negative optical power, with its object-side surface S7 being concave and its image-side surface S8 being concave. The fifth lens E5 has positive optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being convex. The seventh lens E7 has negative optical power, with its object-side surface S13 being concave and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from the object sequentially passes through surfaces S1 to S16 and is ultimately imaged on image surface S17.

[0207] Table 19 shows the basic parameters of the camera lens set of Example 7, where the units of curvature radius, thickness / distance and focal length are all millimeters (mm).

[0208]

[0209]

[0210] Table 19

[0211] In this embodiment, the object side surface and the image side surface of any lens from the first lens E1 to the seventh lens E7 are all aspherical surfaces. Table 17 lists 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, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A56, A57, A58, A 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A 24 、A 26 、A 28 and A 30 .

[0212] Face number A4 A6 A8 A10 A12 A14 A16 S1 -4.0986E-03 -9.0180E-05 -1.1792E-04 7.5334E-05 -2.4660E-05 4.7946E-06 -5.4591E-07 S2 -3.7852E-03 -4.3857E-04 4.2444E-05 3.3296E-05 -2.2239E-05 6.3559E-06 -9.5880E-07 S3 1.8893E-03 -5.1684E-04 6.7108E-04 -5.2534E-04 2.5716E-04 -7.7492E-05 1.4007E-05 S4 3.6666E-04 2.2809E-03 -1.7677E-03 6.3751E-04 -5.8578E-05 -3.4479E-05 1.3175E-05 S5 -8.2280E-03 3.9690E-03 -2.1735E-03 7.2219E-04 -3.8114E-05 -5.7595E-05 2.1334E-05 S6 -7.9911E-03 1.6536E-03 5.4285E-04 -1.0434E-03 7.1415E-04 -2.7036E-04 6.0510E-05 S7 -4.9712E-03 -2.5460E-04 3.1231E-04 -1.4224E-03 1.2674E-03 -5.7289E-04 1.5147E-04 S8 -1.3004E-02 1.0000E-02 -8.7937E-03 5.7028E-03 -2.8528E-03 1.0651E-03 -2.8688E-04 S9 -2.6751E-02 1.3212E-02 -7.0085E-03 3.3391E-03 -1.3027E-03 3.8050E-04 -7.8128E-05 S10 -2.6589E-02 4.6863E-03 -5.9693E-04 -7.7625E-05 6.6452E-05 -1.5674E-05 1.4254E-06 S11 -6.3259E-03 -8.6966E-04 6.9024E-04 -2.7015E-04 7.0860E-05 -1.3620E-05 1.9615E-06 S12 6.0551E-03 -1.7197E-03 3.9849E-04 -7.2914E-05 7.5017E-06 -1.3037E-07 -7.6113E-08 S13 -1.9447E-02 8.5058E-04 2.8221E-04 -7.2245E-05 9.3428E-06 -7.8541E-07 4.5895E-08 S14 -1.8141E-02 1.3584E-03 5.3999E-06 -1.6172E-05 2.1801E-06 -1.6649E-07 8.4782E-09 Face number A18 A20 A22 A24 A26 A28 A30 S1 3.3528E-08 -8.5663E-10 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 7.4261E-08 -2.3275E-09 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 -1.3887E-06 5.8085E-08 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 -1.8489E-06 9.5950E-08 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 -3.3433E-06 2.3834E-07 -5.7504E-09 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 -7.7492E-06 5.0440E-07 -1.1979E-08 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 -2.3795E-05 2.0739E-06 -7.7616E-08 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S8 5.4438E-05 -7.0678E-06 5.9599E-07 -2.9342E-08 6.3876E-10 0.0000E+00 0.0000E+00 S9 1.0998E-05 -1.0431E-06 6.4210E-08 -2.3391E-09 3.8632E-11 0.0000E+00 0.0000E+00 S10 1.2196E-07 -4.5546E-08 4.8586E-09 -2.4047E-10 4.6907E-12 0.0000E+00 0.0000E+00 S11 -2.1132E-07 1.6807E-08 -9.6521E-10 3.8681E-11 -1.0214E-12 1.5916E-14 -1.1061E-16 S12 1.1907E-08 -9.6131E-10 4.8975E-11 -1.6298E-12 3.4506E-14 -4.2295E-16 2.2866E-18 S13 -1.9176E-09 5.7824E-11 -1.2506E-12 1.8942E-14 -1.9089E-16 1.1502E-18 -3.1359E-21 S14 -3.0246E-10 7.6725E-12 -1.3779E-13 1.7122E-15 -1.4002E-17 6.7835E-20 -1.4767E-22

[0213] Table 20

[0214] In this embodiment, the total effective focal length fi of the camera lens group in the telephoto state is 8.52 mm, and the difference Δf between the total effective focal lengths of the camera lens group in the telephoto state and the macro state is 0.47 mm.

[0215] Table 21 shows the distance U between the subject and the imaging lens assembly, the air gap D1 between the first and second lens groups on the optical axis, and the air gap D2 between the second and third lens groups on the optical axis in Example 7. U, D1, and D2 are all in millimeters (mm). When U is infinity, the imaging lens assembly is in telephoto mode; when U is 800mm, the imaging lens assembly is in macro mode I; and when U is 150mm, the imaging lens assembly is in macro mode II.

[0216] Object distance Infinity 800 150 D1 0.9924 0.9320 0.6636 D2 1.8914 1.9518 2.2202

[0217] Table 21

[0218] Figure 26A The axial chromatic aberration curve of the camera lens set of Example 7 in the telephoto state is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the camera lens set. Figure 26B The astigmatism curve of the camera lens set of Example 7 in the telephoto state is shown, which indicates the meridional image plane curvature and sagittal image plane curvature corresponding to different image heights. Figure 26C The distortion curve of the telephoto state of the camera lens set of Example 7 is shown, which represents the distortion value corresponding to different image heights. Figures 26A to 26C It can be seen that the camera lens assembly of Example 7 can achieve good imaging quality in the telephoto state.

[0219] Figure 27A The axial chromatic aberration curve of the camera lens set of Example 7 in the close-up state I is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the camera lens set. Figure 27B The astigmatism curve of the camera lens set of Example 7 in the close-up state I is shown, which represents the meridional image plane curvature and sagittal image plane curvature corresponding to different image heights. Figure 27C The distortion curve of the camera lens set of Example 7 in the close-up state I is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figures 27A to 27C It can be seen that the camera lens group of Example 7 can achieve good imaging quality in the close-up state I.

[0220] Figure 28A The axial chromatic aberration curve of the camera lens set of Example 7 in the close-up state II is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the camera lens set. Figure 28B The astigmatism curve of the camera lens set of Example 7 in the close-up state II is shown, which represents the meridional image plane curvature and sagittal image plane curvature corresponding to different image heights. Figure 28C The distortion curve of the close-up state II of the camera lens set of Example 7 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figures 28A to 28C It can be seen that the camera lens assembly of Example 7 can achieve good imaging quality in the macro state II.

[0221] In summary, the conditional expressions in Examples 1 to 7 satisfy the relationship shown in Table 22.

[0222] Conditional formula / Example 1 2 3 4 5 6 7 ∑T13 / △f 5.75 5.40 6.47 6.11 5.16 5.36 5.22 fi / |FG1| 0.05 0.04 0.09 0.05 0.04 0.04 0.02 fi / FG2 1.22 1.23 1.22 1.24 1.18 1.24 1.23 f45 / FG2 -6.16 -7.00 -4.96 -7.56 -7.50 -9.53 -4.79 f23 / FG2 1.40 1.41 1.38 1.40 1.56 1.42 1.45 f6 / FG2 1.46 1.52 1.44 1.54 1.36 1.61 1.28 fi / FG3 -1.18 -1.27 -1.12 -1.22 -1.28 -1.37 -1.29 Td2 / (T34+T56) 3.38 3.45 4.12 3.67 3.32 3.30 3.12 (CT2+CT3) / T34 1.57 1.72 1.80 1.82 1.56 1.80 1.29 ∑CT / CT1 10.73 10.33 10.89 9.83 10.98 11.95 13.18 ∑CT / CT7 5.13 5.48 5.48 5.80 5.26 5.26 5.08 (V5-V4) / (V5-V3) 1.00 1.00 0.88 1.00 1.00 1.00 1.00 (V2+V6) / (V3+V4+V5) 1.47 1.47 1.13 1.18 1.47 1.47 1.47 TTL / △f 26.28 23.88 26.79 27.65 23.81 21.64 23.82 ∑AT / △T 13.31 13.30 12.83 14.30 13.68 14.05 13.97 △f / △T 1.25 1.35 1.09 1.29 1.45 1.47 1.43

[0223] Table 22

[0224] The present application also provides an imaging device, wherein the electronic photosensitive element thereof may be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS). The imaging device may be a standalone imaging device such as a digital camera, or an imaging module integrated into a mobile electronic device such as a mobile phone. The imaging device is equipped with the camera lens assembly described above.

[0225] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the inventive concept. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A camera lens assembly, characterized in that: Along the optical axis from the object side to the image plane, they include: The first lens group includes a first lens having optical power; the object-side surface of the first lens is convex, and the image-side surface is concave; The second lens group has positive optical power and includes: a second lens having positive optical power and a convex object-side surface; The third lens has a negative optical power, with a convex object-side surface and a concave image-side surface; a fourth lens element having negative optical power and a concave image-side surface; a fifth lens element having optical power and a concave image-side surface; a sixth lens element having positive optical power and a convex object-side surface; and The third lens group includes a seventh lens having negative optical power; the image-side surface of the seventh lens is concave; The positions of the first lens group and the third lens group on the optical axis relative to the image plane are fixed, and the distance of the second lens group on the optical axis relative to the first lens group is adjustable; The number of lenses with optical power in the camera lens group is seven; The total effective focal length fi of the camera lens group in the telephoto state and the effective focal length FG1 of the first lens group satisfy: <fi / |FG1|<0.1; The sum of the air intervals ∑T13 on the optical axis between two adjacent lens groups from the first lens group to the third lens group and the difference △f between the total effective focal lengths of the camera lens group in the telephoto state and the macro state satisfy the following: 5.16≤∑T13 / △f<6.

5.

2. The camera lens assembly according to claim 1, wherein: The total effective focal length fi of the camera lens group in the telephoto state and the effective focal length FG2 of the second lens group satisfy the following: 1.18≤fi / FG2≤1.

24.

3. The camera lens assembly according to claim 1, wherein: The combined focal length f45 of the fourth lens and the fifth lens and the effective focal length FG2 of the second lens group satisfy the following: -9.53≤f45 / FG2≤-4.

79.

4. The camera lens assembly according to claim 1, wherein: The combined focal length f23 of the second lens and the third lens and the effective focal length FG2 of the second lens group satisfy the following: 1.38≤f23 / FG2<1.

6.

5. The camera lens assembly according to claim 1, wherein: The effective focal length f6 of the sixth lens and the effective focal length FG2 of the second lens group satisfy the following: 1.28≤f6 / FG2≤1.

61.

6. The camera lens assembly according to claim 1, wherein: The total effective focal length fi of the camera lens group in the telephoto state and the effective focal length FG3 of the third lens group satisfy the following: -1.37≤fi / FG3≤-1.

12.

7. The camera lens assembly according to any one of claims 1 to 6, characterized in that: An on-axis distance Td2 between the object-side surface of the second lens and the image-side surface of the sixth lens, an air gap T34 between the third lens and the fourth lens on the optical axis, and an air gap T56 between the fifth lens and the sixth lens on the optical axis satisfy the following conditions: 3.12≤Td2 / (T34+T56)≤4.

12.

8. The camera lens assembly according to any one of claims 1 to 6, wherein: The center thickness CT2 of the second lens on the optical axis, the center thickness CT3 of the third lens on the optical axis, and the air interval T34 between the third lens and the fourth lens on the optical axis satisfy the following: 1.29≤(CT2+CT3) / T34≤1.

82.

9. The camera lens assembly according to any one of claims 1 to 6, wherein: A sum ΣCT of the center thicknesses of the first to seventh lenses on the optical axis and a center thickness CT1 of the first lens on the optical axis satisfy the following: 9.83≤ΣCT / CT1≤13.

18.

10. The camera lens assembly according to any one of claims 1 to 6, characterized in that: A sum ΣCT of the center thicknesses of the first to seventh lenses on the optical axis and a center thickness CT7 of the seventh lens on the optical axis satisfy the following: 5.08≤ΣCT / CT7≤5.

80.

11. The camera lens assembly according to any one of claims 1 to 6, characterized in that: The Abbe coefficient V3 of the third lens, the Abbe coefficient V4 of the fourth lens, and the Abbe coefficient V5 of the fifth lens satisfy the following: 0.88≤(V5-V4) / (V5-V3)≤1.

0.

12. The camera lens assembly according to any one of claims 1 to 6, wherein: The Abbe coefficient V2 of the second lens, the Abbe coefficient V3 of the third lens, the Abbe coefficient V4 of the fourth lens, the Abbe coefficient V5 of the fifth lens, and the Abbe coefficient V6 of the sixth lens satisfy the following: 1.13≤(V2+V6) / (V3+V4+V5)<1.

5.

13. The camera lens assembly according to any one of claims 1 to 6, characterized in that: A difference Δf between an on-axis distance TTL from the object side surface of the first lens to the image plane and a total effective focal length of the camera lens assembly in a telephoto state and a macro state satisfies the following: 21.64≤TTL / Δf≤27.

65.

14. The camera lens assembly according to any one of claims 1 to 6, characterized in that: The sum of the air intervals ΣAT between adjacent two lenses from the first lens to the seventh lens on the optical axis and the movable distance ΔT of the second lens group when the camera lens group switches between the telephoto state and the macro state satisfy the following: 12.83≤ΣAT / ΔT≤14.

30.

15. The camera lens assembly according to any one of claims 1 to 6, characterized in that: The difference Δf between the total effective focal lengths of the camera lens group in the telephoto state and the macro state and the movable distance ΔT of the second lens group when the camera lens group switches between the telephoto state and the macro state satisfy the following: 1.09≤Δf / ΔT<1.5.

Images