Zoom lens group

Abstract

The present application discloses a zoom lens group, which includes, in order from the object side to the image side along the optical axis: a first lens group with negative optical power, which includes a first lens and a second lens arranged in order along the optical axis, wherein the first lens and the second lens are cemented to form a first cemented lens; a second lens group with positive optical power, which includes a third lens, a fourth lens, and a fifth lens arranged in order along the optical axis, wherein the fourth lens and the fifth lens are cemented to form a second cemented lens; and a third lens group with positive optical power, which includes a sixth lens. The distance between the first lens group and the second lens group on the optical axis and the distance between the second lens group and the third lens group on the optical axis are changed to switch the zoom lens group from a wide-angle state to a telephoto state. The total effective focal length FT of the zoom lens group when in the telephoto state and the total effective focal length FW of the zoom lens group when in the wide-angle state satisfy the following: FT / FW ≥ 2.0.

Description

Technical Field

[0001] The present application relates to the field of optical elements, and in particular, to a zoom lens assembly. Background Art

[0002] With the advancement of camera technology and the rise of the internet, users are demanding increasingly higher levels of photography and video quality from mobile devices like smartphones and camcorders. Currently, lens manufacturers in this field generally optimize image quality by using a combination of an ultra-clear main camera, an ultra-wide-angle lens, and a telephoto lens. However, this combination currently available on the market requires switching between different lenses to achieve zoom when capturing different scenes.

[0003] Current rear cameras often use a "baton" zoom mechanism, switching between wide-angle, main, and telephoto lenses to achieve a non-continuous zoom in the true optical sense. Furthermore, installing multiple lenses in a mobile device not only significantly increases the device's internal space but also leads to numerous other issues, such as increased cost, size, and weight. Summary of the Invention

[0004] On the one hand, the present application provides a zoom lens group, which includes, in sequence from the object side to the image side along the optical axis: a first lens group with negative optical power, which includes a first lens and a second lens arranged in sequence along the optical axis, wherein the first lens and the second lens are cemented to form a first cemented lens; a second lens group with positive optical power, which includes a third lens, a fourth lens and a fifth lens arranged in sequence along the optical axis, wherein the fourth lens and the fifth lens are cemented to form a second cemented lens; and a third lens group with positive optical power, which includes a sixth lens; the spacing distance between the first lens group and the second lens group on the optical axis and the spacing distance between the second lens group and the third lens group on the optical axis are changed to achieve switching of the zoom lens group from a wide-angle state to a telephoto state; the total effective focal length FT of the zoom lens group when in the telephoto state and the total effective focal length FW of the zoom lens group when in the wide-angle state can satisfy the following: FT / FW≥2.0.

[0005] In one embodiment, at least one of the object-side surface of the first lens to the image-side surface of the sixth lens is an aspherical mirror surface.

[0006] In one embodiment, the effective focal length F1 of the first lens group and the effective focal length F2 of the second lens group may satisfy: -2.3<F1 / F2<-1.8.

[0007] In one embodiment, the effective focal length F3 of the third lens group and the effective focal length F1 of the first lens group may satisfy: -1.1<F3 / F1<-0.8.

[0008] In one embodiment, the total effective focal length FT of the zoom lens group in the telephoto state and the effective focal length F3 of the third lens group may satisfy: 1.1<FT / F3<1.6.

[0009] In one embodiment, the maximum field of view angle FOVT when the zoom lens assembly is in the telephoto state may satisfy the following relationship: 10° < FOVT < 15°.

[0010] In one embodiment, a curvature radius R9 of the object-side surface of the sixth lens and a curvature radius R10 of the image-side surface of the sixth lens may satisfy: 1.3<R9 / R10<1.4.

[0011] In one embodiment, a curvature radius R4 of the object-side surface of the third lens and a curvature radius R6 of the object-side surface of the fourth lens may satisfy: 0.5<R4 / R6<1.0.

[0012] In one embodiment, the effective focal length f11 of the first lens and the effective focal length f12 of the second lens may satisfy: -0.7<f11 / f12<-0.4.

[0013] In one embodiment, the effective focal length f21 of the third lens, the effective focal length f23 of the fifth lens, and the effective focal length f22 of the fourth lens may satisfy: 1.0<(f21+f23) / f22<1.3.

[0014] In one embodiment, the center thickness CT6 of the sixth lens on the optical axis, the center thickness CT1 of the first lens on the optical axis, and the center thickness CT2 of the second lens on the optical axis may satisfy: 0.2<CT6 / (CT1+CT2)<1.8.

[0015] The present application provides a zoom lens assembly with continuous zoom, miniaturization and good imaging quality by reasonably allocating optical focal length and optimizing optical parameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0017] Figure 1 FIG2 shows a schematic structural diagram of a zoom lens assembly in a wide-angle state according to Embodiment 1 of the present application;

[0018] Figure 2 A schematic structural diagram showing an intermediate state of the zoom lens assembly in the process of switching from a wide-angle state to a telephoto state according to Example 1 of the present application is shown;

[0019] Figure 3 1 shows a schematic structural diagram of a zoom lens assembly in a telephoto state according to Example 1 of the present application;

[0020] Figures 4A to 4D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the zoom lens group of Example 1 are shown respectively when the zoom lens group is in the wide-angle state;

[0021] 5A to 5D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the zoom lens group of Example 1 are respectively shown in the intermediate states during the process of switching from the wide-angle state to the telephoto state;

[0022] 6A to 6D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the zoom lens group of Example 1 are shown respectively when the zoom lens group is in the telephoto state;

[0023] Figure 7 FIG2 shows a schematic structural diagram of a zoom lens assembly in a wide-angle state according to Embodiment 2 of the present application;

[0024] Figure 8 A schematic structural diagram showing an intermediate state of a zoom lens assembly in a process of switching from a wide-angle state to a telephoto state according to Example 2 of the present application is shown;

[0025] Figure 9 1. A schematic structural diagram of a zoom lens assembly in a telephoto state according to Embodiment 2 of the present application is shown;

[0026] 10A to 10D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the zoom lens group of Example 2 are shown respectively when the zoom lens group is in the wide-angle state;

[0027] 11A to 11D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the zoom lens group of Example 2 are respectively shown in the intermediate states during the process of switching from the wide-angle state to the telephoto state;

[0028] 12A to 12D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the zoom lens group of Example 2 are shown respectively when the zoom lens group is in the telephoto state;

[0029] Figure 13 FIG2 shows a schematic structural diagram of a zoom lens assembly in a wide-angle state according to Embodiment 3 of the present application;

[0030] Figure 14 A schematic structural diagram showing an intermediate state of a zoom lens assembly in a process of switching from a wide-angle state to a telephoto state according to Example 3 of the present application is shown;

[0031] Figure 15FIG2 shows a schematic structural diagram of a zoom lens assembly in a telephoto state according to Example 3 of the present application;

[0032] 16A to 16D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the zoom lens group of Example 3 are shown respectively when the zoom lens group is in the wide-angle state;

[0033] 17A to 17D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the zoom lens group of Example 3 are shown in the intermediate state when switching from the wide-angle state to the telephoto state;

[0034] 18A to 18D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the zoom lens group of Example 3 are shown respectively when the zoom lens group is in the telephoto state;

[0035] Figure 19 1. A schematic structural diagram of a zoom lens assembly in a wide-angle state according to Embodiment 4 of the present application is shown;

[0036] Figure 20 A schematic structural diagram showing an intermediate state of a zoom lens assembly in a process of switching from a wide-angle state to a telephoto state according to Example 4 of the present application is shown;

[0037] Figure 21 1. A schematic structural diagram of a zoom lens assembly in a telephoto state according to Embodiment 4 of the present application is shown;

[0038] 22A to 22D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the zoom lens group of Example 4 are shown respectively when the zoom lens group is in the wide-angle state;

[0039] 23A to 23D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the zoom lens group of Example 4 are respectively shown in the intermediate states during the process of switching from the wide-angle state to the telephoto state;

[0040] 24A to 24D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the zoom lens group of Example 4 are shown respectively when the zoom lens group is in the telephoto state;

[0041] Figure 25 FIG2 shows a schematic structural diagram of a zoom lens assembly in a wide-angle state according to Embodiment 5 of the present application;

[0042] Figure 26 A schematic structural diagram showing an intermediate state of a zoom lens assembly in a process of switching from a wide-angle state to a telephoto state according to Example 5 of the present application is shown;

[0043] Figure 27 FIG2 shows a schematic structural diagram of a zoom lens assembly in a telephoto state according to Example 5 of the present application;

[0044] 28A to 28D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the zoom lens group of Example 5 are shown respectively when the zoom lens group is in the wide-angle state;

[0045] 29A to 29D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the zoom lens group of Example 5 in the intermediate state during the process of switching from the wide-angle state to the telephoto state; and

[0046] 30A to 30D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the zoom lens group of Example 5 when in the telephoto state are shown respectively. DETAILED DESCRIPTION

[0047] For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely descriptions of exemplary embodiments of the present application and are not intended to limit the scope of the present application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0048] It should be noted that in this specification, the terms "first," "second," "third," etc., are used solely to distinguish one feature from another and do not limit the features. Thus, the first lens discussed below could also be referred to as the second lens or the third lens without departing from the teachings of this application.

[0049] 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.

[0050] 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 imaging plane is called the image-side surface of the lens.

[0051] It should also be understood that the terms "comprises," "including," "having," "includes," and / or "comprising," when used in this specification, indicate the presence of the stated features, elements, and / or components, but do not preclude the presence or addition of one or more other features, elements, components, and / or combinations thereof. In addition, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire list of features rather than modifying the individual elements in the list. In addition, when describing embodiments of the present application, "may" is used to mean "one or more embodiments of the present application." And, the term "exemplary" is intended to refer to an example or illustration.

[0052] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by those skilled in the art to which this application belongs. It should also be understood that terms (such as those defined in commonly used dictionaries) 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.

[0053] 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.

[0054] The features, principles and other aspects of the present application are described in detail below.

[0055] A zoom lens system according to an exemplary embodiment of the present application may include six lenses having optical power: a first lens group including a first lens and a second lens; a second lens group including a third lens, a fourth lens, and a fifth lens; and a third lens group including a sixth lens. These six lenses are arranged in order from the object side to the image side along the optical axis.

[0056] In an exemplary embodiment, the first lens group may have negative refractive power; the second lens group may have positive refractive power; and the third lens group may have positive refractive power.

[0057] In an exemplary embodiment, the first lens and the second lens may be cemented together to form a first cemented lens; the fourth lens and the fifth lens may be cemented together to form a second cemented lens. The first cemented lens and the second cemented lens can together optimize the chromatic aberration of the system and meet the processability requirements.

[0058] In an exemplary embodiment, the zoom lens group can be switched from a wide-angle state to a telephoto state by changing the distance between the first lens group and the second lens group on the optical axis, as well as the distance between the second lens group and the third lens group on the optical axis. By rationally allocating the system's optical power, when the system is in the wide-angle state, the distance between the zoom group formed by the first lens group and the second lens group is the largest, while the distance between the compensation group formed by the second lens group and the third lens group is the smallest, thereby achieving the system's minimum focal length and maximum field of view. When the system zooms toward the telephoto state, the distance between the zoom group formed by the first lens group and the second lens group decreases, while the distance between the compensation group formed by the second lens group and the third lens group increases. The ratio of the full system focal length at the telephoto end to the full system focal length at the wide-angle end continuously changes, completing the continuous zoom process of the optical imaging system.

[0059] In an exemplary embodiment, the zoom lens assembly according to the present application may satisfy the following relationship: FT / FW ≥ 2.0, where FT is the total effective focal length of the zoom lens assembly in the telephoto position, and FW is the total effective focal length of the zoom lens assembly in the wide-angle position. Meeting FT / FW ≥ 2.0 facilitates continuous zooming of the zoom lens assembly, ensuring good imaging quality. By appropriately adjusting the total effective focal length of the entire optical system, the optical imaging system can be endowed with continuous zoom characteristics.

[0060] In exemplary embodiments, the zoom lens system according to the present application may satisfy the following: -2.3 < F1 / F2 < -1.8, where F1 is the effective focal length of the first lens group and F2 is the effective focal length of the second lens group. More specifically, F1 and F2 may further satisfy the following: -2.2 < F1 / F2 < -1.9. This condition of -2.3 < F1 / F2 < -1.8 allows for reasonable control of the contribution range of the effective focal lengths of the first and second lens groups, as well as the contribution rate of spherical aberration of the first and second lens groups.

[0061] In an exemplary embodiment, the zoom lens system according to the present application can satisfy the following relationship: -1.1 < F3 / F1 < -0.8, where F3 is the effective focal length of the third lens group and F1 is the effective focal length of the first lens group. This condition of -1.1 < F3 / F1 < -0.8 allows the third lens group to assume the required negative focal power while keeping the spherical aberration contributed by the third lens group within a reasonably controllable range, thus ensuring good image quality across the system's on-axis field of view.

[0062] In an exemplary embodiment, the zoom lens assembly according to the present application may satisfy the following relationship: 1.1 < FT / F3 < 1.6, where FT is the total effective focal length of the zoom lens assembly in the telephoto position, and F3 is the effective focal length of the third lens group. This 1.1 < FT / F3 < 1.6 condition allows the zoom lens assembly to have lenses with reasonable positive power to balance the aberrations generated by the negative-power lens group at the front, thereby achieving good image quality and high resolution.

[0063] In an exemplary embodiment, the zoom lens system according to the present application may satisfy the following conditions: 10° < FOVT < 15°, where FOVT is the maximum field of view angle when the zoom lens system is in the telephoto position. More specifically, FOVT may further satisfy the following conditions: 10° < FOVT < 13°. This condition facilitates achieving the telephoto characteristics of the zoom lens system.

[0064] In an exemplary embodiment, the zoom lens assembly according to the present application may satisfy the following: 1.3 < R9 / R10 < 1.4, where R9 is the radius of curvature of the object-side surface of the sixth lens element, and R10 is the radius of curvature of the image-side surface of the sixth lens element. This 1.3 < R9 / R10 < 1.4 effectively constrains the shape of the sixth lens element, thereby effectively controlling the aberration contribution rates of the object-side and image-side surfaces of the sixth lens element, effectively balancing aberrations related to the system and aperture zones, and thereby effectively improving the imaging quality of the system.

[0065] In an exemplary embodiment, the zoom lens assembly according to the present application can satisfy the following relationship: 0.5 < R4 / R6 < 1.0, where R4 is the radius of curvature of the object-side surface of the third lens element, and R6 is the radius of curvature of the object-side surface of the fourth lens element. This 0.5 < R4 / R6 < 1.0 effectively constrains the aberration contribution of the object-side surfaces of the third and fourth lenses, effectively balancing aberrations related to the system and aperture zones, thereby significantly improving the imaging quality of the system.

[0066] In an exemplary embodiment, the zoom lens assembly according to the present application can satisfy the following conditions: -0.7 < f11 / f12 < -0.4, where f11 is the effective focal length of the first lens element and f12 is the effective focal length of the second lens element. More specifically, f11 and f12 can further satisfy the following conditions: -0.7 < f11 / f12 < -0.5. This condition, -0.7 < f11 / f12 < -0.4, can control the contribution of the aberrations of the first and second lenses, balancing them with the aberrations generated by the rear optical lens, maintaining a reasonable level of system aberrations and, consequently, ensuring good imaging quality for the zoom lens assembly.

[0067] In an exemplary embodiment, the zoom lens assembly according to the present application may satisfy the following relationship: 1.0 < (f21 + f23) / f22 < 1.3, where f21 is the effective focal length of the third lens element, f23 is the effective focal length of the fifth lens element, and f22 is the effective focal length of the fourth lens element. This relationship ensures that the optical system has both excellent image quality and good processability.

[0068] In an exemplary embodiment, the zoom lens assembly according to the present application may satisfy the following: 0.2 < CT6 / (CT1 + CT2) < 1.8, where CT6 is the center thickness of the sixth lens element on the optical axis, CT1 is the center thickness of the first lens element on the optical axis, and CT2 is the center thickness of the second lens element on the optical axis. This 0.2 < CT6 / (CT1 + CT2) < 1.8 requirement ensures good processability of the zoom lens assembly.

[0069] In an exemplary embodiment, the zoom lens group according to the present application further includes an aperture provided between the first lens group and the second lens group. Optionally, the zoom lens group may further include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging surface. The present application proposes a zoom lens group having the characteristics of continuous zoom, high integration, miniaturization, high imaging quality, etc. The zoom lens group according to the above embodiment of the present application may adopt multiple lenses, such as the six lenses described above. By reasonably allocating the optical power, surface shape, center thickness of each lens, and axial spacing between each lens, etc., the incident light can be effectively converged, the total optical length of the imaging lens can be reduced, and the machinability of the imaging lens can be improved, making the zoom lens group more conducive to production and processing.

[0070] In an embodiment of the present application, at least one of the mirror surfaces of each lens is an aspherical mirror surface, that is, at least one of the mirror surfaces from the object side surface of the first lens to the image side surface of the sixth lens is an aspherical mirror surface. The characteristic of an aspherical lens is that the curvature changes continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens with a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has a better curvature radius characteristic, and has the advantages of improving distortion aberration and improving astigmatism aberration. After adopting an aspherical lens, the aberration that occurs during imaging can be eliminated as much as possible, thereby improving the imaging quality. Optionally, at least one of the object side surface and the image side surface of each lens in the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens is an aspherical mirror surface. Optionally, the object side surface and the image side surface of each lens in the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens are all aspherical mirror surfaces.

[0071] However, those skilled in the art will appreciate that the number of lenses comprising the zoom lens assembly can be varied to achieve the various results and advantages described herein without departing from the claimed technical solutions. For example, while six lenses are described in the embodiments, the zoom lens assembly is not limited to six lenses. If desired, the zoom lens assembly may also include other numbers of lenses.

[0072] Specific embodiments of the zoom lens assembly applicable to the above-mentioned embodiments will be further described below with reference to the accompanying drawings.

[0073] Example 1

[0074] The following reference Figures 1 to 6D A zoom lens assembly according to Example 1 of the present application is described. Figure 1 A schematic structural diagram of the zoom lens assembly in a wide-angle state according to Example 1 of the present application is shown. Figure 2 A schematic structural diagram of an intermediate state of a zoom lens assembly in the process of switching from a wide-angle state to a telephoto state according to Example 1 of the present application is shown. Figure 3 A schematic structural diagram of the zoom lens assembly in telephoto state according to Example 1 of the present application is shown.

[0075] like Figure 1-Figure 3 As shown, the zoom lens group includes, from the object side to the image side, a first lens group G1 (a first lens E1 and a second lens E2), an aperture STO, a second lens group G2 (a third lens E3, a fourth lens E4 and a fifth lens E5), a third lens group G3 (a sixth lens E6), a filter E7 and an imaging surface S13.

[0076] The object-side surface S1 of the first lens E1 is concave, and the image-side surface S2 is concave. The object-side surface S2 of the second lens E2 is convex, and the image-side surface S3 is concave. The object-side surface S4 of the third lens E3 is convex, and the image-side surface S5 is convex. The object-side surface S6 of the fourth lens E4 is convex, and the image-side surface S7 is convex. The object-side surface S7 of the fifth lens E5 is concave, and the image-side surface S8 is concave. The object-side surface S9 of the sixth lens E6 is concave, and the image-side surface S10 is convex. The filter E7 has an object-side surface S11 and an image-side surface S12. Light from an object passes through each surface S1 to S12 in sequence and is ultimately imaged on the imaging surface S13.

[0077] Table 1 shows basic parameters of the zoom lens assembly of Example 1, wherein the units of curvature radius and thickness / distance are all millimeters (mm).

[0078]

[0079] Table 1

[0080] In this example, the zoom lens group switches from wide-angle to telephoto mode, or vice versa, by changing the distance D3 between the first and second lens groups on the optical axis (i.e., the distance between the image side surface of the second lens E2 and the object side surface of the third lens E3), the distance D9 between the second and third lens groups on the optical axis (i.e., the distance between the image side surface of the fifth lens E5 and the object side surface of the sixth lens E6), and the distance D13 between the image side surface of the filter and the imaging plane of the zoom lens group on the optical axis. The total effective focal length f of the zoom lens group, the aperture value Fno, the maximum field of view FOV, the total length TTL of the zoom lens group (i.e., the distance between the object side surface S1 of the first lens E1 and the imaging plane S13 of the zoom lens group on the optical axis), and half the diagonal length of the effective pixel area on the imaging plane S13 of the zoom lens group change as the zoom lens group switches from wide-angle to telephoto mode, or vice versa.

[0081] Table 2 shows the parameters of Example 1 that change with different states of the zoom lens group, where the units of f, TTL, ImgH, D3, D9, and D13 are all in millimeters (mm), and the unit of FOV is in degrees (°).

[0082] Various parameters Wide-angle state intermediate state Telephoto state f 15.00 21.21 30.00 Fno 2.90 3.54 4.43 FOV 21.3 15.1 10.7 TTL 33.09 31.60 32.75 IhD 2.83 2.85 2.83 D3 8.96 4.09 0.60 D9 8.16 11.80 16.74 D13 3.90 3.64 3.34

[0083] Table 2

[0084] In Example 1, both the object-side surface and the image-side surface of the third lens element E3 and the sixth lens element E6 are aspherical surfaces. The surface shape x of each aspherical lens can be defined by, but is not limited to, the following aspherical surface formula:

[0085]

[0086] 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 reciprocal of the curvature radius R in Table 1 above); k is the conic coefficient; Ai is the correction coefficient of the i-th order of the aspheric surface. Table 3 below lists the high-order coefficients A4, A6, A8, A9, A10 of each aspheric mirror surface S4, S5, S9, and S10 that can be used in Example 1. 10 、A 12 、A 14 and A 16 .

[0087] Face number A4 A6 A8 A10 A12 A14 A16 S4 6.2132E-05 1.9911E-05 -3.4326E-06 5.9281E-07 -5.0960E-08 2.2862E-09 -4.0650E-11 S5 4.9364E-04 2.1990E-05 -3.2187E-06 6.6260E-07 -6.3553E-08 3.2128E-09 -6.2856E-11 S9 -7.2609E-04 -6.8510E-05 1.7178E-05 -2.4569E-06 1.0321E-07 0.0000E+00 0.0000E+00 S10 3.5417E-04 -4.8967E-05 1.1512E-05 -1.2367E-06 4.3517E-08 0.0000E+00 0.0000E+00

[0088] Table 3

[0089] Figure 4A 、 Figure 5A 、 Figure 6AThe axial chromatic aberration curves of the zoom lens assembly of Example 1 are respectively shown when they are in the wide-angle state, the intermediate state, and the telephoto state, which indicate the deviation of the focal point of light of different wavelengths passing through the lens. Figure 4B 、 Figure 5B 、 Figure 6B Astigmatism curves are shown for the zoom lens unit of Example 1 in the wide-angle state, the intermediate state, and the telephoto state, respectively, indicating meridional field curvature and sagittal field curvature. Figure 4C 、 Figure 5C 、 Figure 6C Distortion curves of the zoom lens assembly of Example 1 when in wide-angle, intermediate, and telephoto states are shown, respectively, indicating the distortion values corresponding to different image heights. Figure 4D 、 Figure 5D 、 Figure 6D The chromatic aberration curves of the zoom lens group of Example 1 are shown in the wide-angle state, the intermediate state and the telephoto state, which represent the deviation of the different image heights on the imaging surface after the light passes through the lens. 4A to 6D It can be seen that the zoom lens assembly provided in Example 1 can achieve good imaging quality in all states.

[0090] Example 2

[0091] The following reference Figures 7 to 12D A zoom lens assembly according to Embodiment 2 of the present application will be described. In this embodiment and the following embodiments, some descriptions similar to those in Embodiment 1 will be omitted for the sake of brevity. Figure 7 A schematic structural diagram of a zoom lens assembly in a wide-angle state according to embodiment 2 of the present application is shown. Figure 8 A schematic structural diagram of an intermediate state of a zoom lens group in the process of switching from a wide-angle state to a telephoto state according to Example 2 of the present application is shown. Figure 9 A schematic structural diagram of a zoom lens assembly in a telephoto state according to embodiment 2 of the present application is shown.

[0092] like Figure 7-Figure 9 As shown, the zoom lens group includes, from the object side to the image side, a first lens group G1 (a first lens E1 and a second lens E2), an aperture STO, a second lens group G2 (a third lens E3, a fourth lens E4 and a fifth lens E5), a third lens group G3 (a sixth lens E6), a filter E7 and an imaging surface S13.

[0093] The object-side surface S1 of the first lens E1 is concave, and the image-side surface S2 is concave. The object-side surface S2 of the second lens E2 is convex, and the image-side surface S3 is concave. The object-side surface S4 of the third lens E3 is convex, and the image-side surface S5 is convex. The object-side surface S6 of the fourth lens E4 is convex, and the image-side surface S7 is convex. The object-side surface S7 of the fifth lens E5 is concave, and the image-side surface S8 is concave. The object-side surface S9 of the sixth lens E6 is concave, and the image-side surface S10 is convex. The filter E7 has an object-side surface S11 and an image-side surface S12. Light from an object passes through each surface S1 to S12 in sequence and is ultimately imaged on the imaging surface S13.

[0094] Table 4 shows the basic parameters of the zoom lens assembly of Example 2, wherein the units of curvature radius and thickness / distance are all millimeters (mm).

[0095]

[0096] Table 4

[0097] In this example, the zoom lens group switches from wide-angle to telephoto mode, or vice versa, by changing the optical axis distance D3 between the first and second lens groups, the optical axis distance D9 between the second and third lens groups, and the optical axis distance D13 between the image-side surface of the filter and the imaging plane of the zoom lens group. The total effective focal length f of the zoom lens group, the aperture value Fno, the maximum field of view FOV, the total length TTL of the zoom lens group, and half the diagonal length of the effective pixel area on the imaging plane S13 of the zoom lens group change as the zoom lens group switches from wide-angle to telephoto mode, or vice versa.

[0098] Table 5 shows the parameters that change with different states of the zoom lens group in Example 2, where the units of f, TTL, ImgH, D3, D9 and D13 are all millimeters (mm), and the unit of FOV is degrees (°).

[0099] Various parameters Wide-angle state intermediate state Telephoto state f 15.01 22.01 30.01 Fno 2.90 3.54 4.43 FOV 21.3 14.6 10.7 TTL 33.73 31.26 31.75 IhD 2.83 2.85 2.84 D3 9.66 3.61 0.16 D9 7.47 11.31 15.57 D13 4.18 3.91 3.59

[0100] Table 5

[0101] Table 6 shows the high-order coefficients of each aspheric mirror surface that can be used in Example 2, wherein the surface shape of each aspheric surface can be defined by formula (1) given in Example 1 above.

[0102] Face number A4 A6 A8 A10 A12 A14 A16 S4 6.8082E-05 1.6146E-05 -1.7970E-06 2.6327E-07 -1.7671E-08 6.2761E-10 -8.2338E-12 S5 4.8218E-04 2.6644E-05 -3.9847E-06 6.9105E-07 -5.8213E-08 2.6234E-09 -4.5637E-11 S9 -7.5311E-04 1.9090E-05 -5.0575E-06 -1.3389E-07 2.3784E-08 0.0000E+00 0.0000E+00 S10 2.2033E-04 2.3442E-05 -3.0065E-06 1.3837E-08 6.3559E-09 0.0000E+00 0.0000E+00

[0103] Table 6

[0104] Figure 10A 、 11A12A and 12B respectively show the axial chromatic aberration curves of the zoom lens group of Example 2 when it is in the wide-angle state, the intermediate state and the telephoto state, which indicate that light of different wavelengths deviates from the focal point after passing through the lens. Figure 10B 、 11B 12B respectively show the astigmatism curves of the zoom lens group of Example 2 when it is in the wide-angle state, the intermediate state and the telephoto state, which represent the meridional image curvature and the sagittal image curvature. Figure 10C 、 11C 12C respectively show the distortion curves of the zoom lens group of Example 2 when it is in the wide-angle state, the intermediate state and the telephoto state, which represent the distortion magnitude values corresponding to different image heights. Figure 10D 、 11D 12D respectively show the magnification chromatic aberration curves of the zoom lens group of Example 2 when it is in the wide-angle state, the intermediate state and the telephoto state, which represent the deviation of the different image heights on the imaging surface after the light passes through the lens. 10A to 12D It can be seen that the zoom lens assembly provided in Example 2 can achieve good imaging quality in all states.

[0105] Example 3

[0106] The following reference Figures 13 to 18D A zoom lens assembly according to Example 3 of the present application is described. Figure 13 A schematic structural diagram of a zoom lens assembly in a wide-angle state according to Example 3 of the present application is shown. Figure 14 A schematic structural diagram of an intermediate state of a zoom lens group in the process of switching from a wide-angle state to a telephoto state according to Example 3 of the present application is shown. Figure 15 A schematic structural diagram of a zoom lens assembly in telephoto state according to Example 3 of the present application is shown.

[0107] like Figure 13-15 As shown, the zoom lens group includes, from the object side to the image side, a first lens group G1 (a first lens E1 and a second lens E2), an aperture STO, a second lens group G2 (a third lens E3, a fourth lens E4 and a fifth lens E5), a third lens group G3 (a sixth lens E6), a filter E7 and an imaging surface S13.

[0108] The object-side surface S1 of the first lens E1 is concave, and the image-side surface S2 is concave. The object-side surface S2 of the second lens E2 is convex, and the image-side surface S3 is concave. The object-side surface S4 of the third lens E3 is convex, and the image-side surface S5 is convex. The object-side surface S6 of the fourth lens E4 is convex, and the image-side surface S7 is convex. The object-side surface S7 of the fifth lens E5 is concave, and the image-side surface S8 is concave. The object-side surface S9 of the sixth lens E6 is concave, and the image-side surface S10 is convex. The filter E7 has an object-side surface S11 and an image-side surface S12. Light from an object passes through each surface S1 to S12 in sequence and is ultimately imaged on the imaging surface S13.

[0109] Table 7 shows the basic parameters of the zoom lens assembly of Example 3, wherein the units of curvature radius and thickness / distance are all millimeters (mm).

[0110]

[0111] Table 7

[0112] In this example, the zoom lens group switches from wide-angle to telephoto mode, or vice versa, by changing the optical axis distance D3 between the first and second lens groups, the optical axis distance D9 between the second and third lens groups, and the optical axis distance D13 between the image-side surface of the filter and the imaging plane of the zoom lens group. The total effective focal length f of the zoom lens group, the aperture value Fno, the maximum field of view FOV, the total length TTL of the zoom lens group, and half the diagonal length of the effective pixel area on the imaging plane S13 of the zoom lens group change as the zoom lens group switches from wide-angle to telephoto mode, or vice versa.

[0113] Table 8 shows the parameters that change with different states of the zoom lens group in Example 3, where the units of f, TTL, ImgH, D3, D9 and D13 are all millimeters (mm), and the unit of FOV is degrees (°).

[0114] Various parameters Wide-angle state intermediate state Telephoto state f 13.31 15.79 26.61 Fno 2.90 3.54 4.43 FOV 23.9 20.2 12.1 TTL 37.48 35.86 35.28 IhD 2.80 2.82 2.82 D3 9.98 6.92 0.33 D9 8.24 9.76 16.30 D13 3.95 3.86 3.33

[0115] Table 8

[0116] Table 9 shows the high-order coefficients of each aspheric mirror surface that can be used in Example 3, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in the above Example 1.

[0117] Face number A4 A6 A8 A10 A12 A14 A16 S4 6.6053E-05 2.0015E-05 -3.1059E-06 4.9777E-07 -4.0701E-08 1.7938E-09 -3.2037E-11 S5 4.7356E-04 2.9849E-05 -5.0524E-06 8.9135E-07 -7.9707E-08 3.8463E-09 -7.4248E-11 S9 -7.4764E-04 -3.2847E-05 7.7670E-06 -1.6708E-06 8.3793E-08 0.0000E+00 0.0000E+00 S10 3.1863E-04 -1.6601E-05 4.8680E-06 -7.1088E-07 2.9379E-08 0.0000E+00 0.0000E+00

[0118] Table 9

[0119] Figure 16A 、 17A18A and 18B respectively show the axial chromatic aberration curves of the zoom lens group of Example 3 when it is in the wide-angle state, the intermediate state and the telephoto state, which indicate that light of different wavelengths deviates from the focal point after passing through the lens. Figure 16B 、 17B 18B respectively show the astigmatism curves of the zoom lens group of Example 3 when it is in the wide-angle state, the intermediate state and the telephoto state, which represent the meridional image curvature and the sagittal image curvature. Figure 16C 、 17C 18C respectively show the distortion curves of the zoom lens group of Example 3 when it is in the wide-angle state, the intermediate state and the telephoto state, which represent the distortion magnitude values corresponding to different image heights. Figure 16D 、 17D 18D and 18D respectively show the magnification chromatic aberration curves of the zoom lens group of Example 3 when it is in the wide-angle state, the intermediate state and the telephoto state, which represent the deviation of the different image heights on the imaging surface after the light passes through the lens. 16A to 18D It can be seen that the zoom lens assembly provided in Example 3 can achieve good imaging quality in all states.

[0120] Example 4

[0121] The following reference Figures 19 to 24D A zoom lens assembly according to Example 4 of the present application is described. Figure 19 A schematic structural diagram of a zoom lens assembly in a wide-angle state according to Example 4 of the present application is shown. Figure 20 A schematic structural diagram of an intermediate state of a zoom lens group in the process of switching from a wide-angle state to a telephoto state according to Example 4 of the present application is shown. Figure 21 A schematic structural diagram of a zoom lens assembly in a telephoto state according to Example 4 of the present application is shown.

[0122] like Figures 19-21 As shown, the zoom lens group includes, from the object side to the image side, a first lens group G1 (a first lens E1 and a second lens E2), an aperture STO, a second lens group G2 (a third lens E3, a fourth lens E4 and a fifth lens E5), a third lens group G3 (a sixth lens E6), a filter E7 and an imaging surface S13.

[0123] The object-side surface S1 of the first lens E1 is concave, and the image-side surface S2 is concave. The object-side surface S2 of the second lens E2 is convex, and the image-side surface S3 is concave. The object-side surface S4 of the third lens E3 is convex, and the image-side surface S5 is convex. The object-side surface S6 of the fourth lens E4 is convex, and the image-side surface S7 is convex. The object-side surface S7 of the fifth lens E5 is concave, and the image-side surface S8 is concave. The object-side surface S9 of the sixth lens E6 is concave, and the image-side surface S10 is convex. The filter E7 has an object-side surface S11 and an image-side surface S12. Light from an object passes through each surface S1 to S12 in sequence and is ultimately imaged on the imaging surface S13.

[0124] Table 10 shows the basic parameters of the zoom lens assembly of Example 4, where the units of curvature radius and thickness / distance are all millimeters (mm).

[0125]

[0126] Table 10

[0127] In this example, the zoom lens group switches from wide-angle to telephoto mode, or vice versa, by changing the optical axis distance D3 between the first and second lens groups, the optical axis distance D9 between the second and third lens groups, and the optical axis distance D13 between the image-side surface of the filter and the imaging plane of the zoom lens group. The total effective focal length f of the zoom lens group, the aperture value Fno, the maximum field of view FOV, the total length TTL of the zoom lens group, and half the diagonal length of the effective pixel area on the imaging plane S13 of the zoom lens group change as the zoom lens group switches from wide-angle to telephoto mode, or vice versa.

[0128] Table 11 shows the parameters that change with different states of the zoom lens group in Example 4, where the units of f, TTL, ImgH, D3, D9 and D13 are all millimeters (mm), and the unit of FOV is degrees (°).

[0129] Various parameters Wide-angle state intermediate state Telephoto state f 13.04 14.67 26.08 Fno 2.90 3.54 4.43 FOV 24.4 21.8 12.3 TTL 39.06 37.72 36.11 IhD 2.79 2.81 2.81 D3 10.71 8.43 0.56 D9 8.67 9.69 16.70 D13 3.62 3.55 2.80

[0130] Table 11

[0131] Table 12 shows the high-order coefficients of each aspheric mirror surface that can be used in Example 4, wherein the surface shape of each aspheric surface can be defined by the formula (1) given in the above Example 1.

[0132] Face number A4 A6 A8 A10 A12 A14 A16 S4 7.0139E-05 1.9447E-05 -2.9696E-06 4.7200E-07 -3.7949E-08 1.6375E-09 -2.8454E-11 S5 4.7255E-04 2.9338E-05 -4.9024E-06 8.6133E-07 -7.6288E-08 3.6374E-09 -6.9011E-11 S9 -6.0232E-04 -5.1024E-05 1.4877E-05 -2.4845E-06 1.1474E-07 0.0000E+00 0.0000E+00 S10 3.4023E-04 -3.1810E-05 9.1801E-06 -1.2078E-06 4.7410E-08 0.0000E+00 0.0000E+00

[0133] Table 12

[0134] Figure 22A 、 23A24A respectively show the axial chromatic aberration curves of the zoom lens group of Example 4 when it is in the wide-angle state, the intermediate state and the telephoto state, which indicate that light of different wavelengths deviates from the focal point after passing through the lens. Figure 22B 、 23B 24B respectively show the astigmatism curves of the zoom lens group of Example 4 when it is in the wide-angle state, the intermediate state and the telephoto state, which represent the meridional image curvature and the sagittal image curvature. Figure 22C 、 23C 24C respectively show the distortion curves of the zoom lens group of Example 4 when it is in the wide-angle state, the intermediate state and the telephoto state, which represent the distortion magnitude values corresponding to different image heights. Figure 22D 、 23D 24D respectively show the magnification chromatic aberration curves of the zoom lens group of Example 4 when it is in the wide-angle state, the intermediate state and the telephoto state, which represent the deviation of the different image heights on the imaging surface after the light passes through the lens. 22A to 24D It can be seen that the zoom lens assembly provided in Example 4 can achieve good imaging quality in all states.

[0135] Example 5

[0136] The following reference Figures 25 to 30D A zoom lens assembly according to Example 5 of the present application is described. Figure 25 A schematic structural diagram of a zoom lens assembly in a wide-angle state according to Example 5 of the present application is shown. Figure 26 A schematic structural diagram of an intermediate state of a zoom lens group in the process of switching from a wide-angle state to a telephoto state according to Example 5 of the present application is shown. Figure 27 A schematic structural diagram of a zoom lens assembly in telephoto state according to Example 5 of the present application is shown.

[0137] like Figure 25-27 As shown, the zoom lens group includes, from the object side to the image side, a first lens group G1 (a first lens E1 and a second lens E2), an aperture STO, a second lens group G2 (a third lens E3, a fourth lens E4 and a fifth lens E5), a third lens group G3 (a sixth lens E6), a filter E7 and an imaging surface S13.

[0138] The object-side surface S1 of the first lens E1 is concave, and the image-side surface S2 is concave. The object-side surface S2 of the second lens E2 is convex, and the image-side surface S3 is concave. The object-side surface S4 of the third lens E3 is convex, and the image-side surface S5 is convex. The object-side surface S6 of the fourth lens E4 is convex, and the image-side surface S7 is convex. The object-side surface S7 of the fifth lens E5 is concave, and the image-side surface S8 is concave. The object-side surface S9 of the sixth lens E6 is concave, and the image-side surface S10 is convex. The filter E7 has an object-side surface S11 and an image-side surface S12. Light from an object passes through each surface S1 to S12 in sequence and is ultimately imaged on the imaging surface S13.

[0139] Table 13 shows the basic parameters of the zoom lens assembly of Example 5, where the units of curvature radius and thickness / distance are all millimeters (mm).

[0140]

[0141] Table 13

[0142] In this example, the zoom lens group switches from wide-angle to telephoto mode, or vice versa, by changing the optical axis distance D3 between the first and second lens groups, the optical axis distance D9 between the second and third lens groups, and the optical axis distance D13 between the image-side surface of the filter and the imaging plane of the zoom lens group. The total effective focal length f of the zoom lens group, the aperture value Fno, the maximum field of view FOV, the total length TTL of the zoom lens group, and half the diagonal length of the effective pixel area on the imaging plane S13 of the zoom lens group change as the zoom lens group switches from wide-angle to telephoto mode, or vice versa.

[0143] Table 14 shows the parameters that change with different states of the zoom lens group in Example 5, where the units of f, TTL, ImgH, D3, D9 and D13 are all millimeters (mm), and the unit of FOV is degrees (°).

[0144]

[0145]

[0146] Table 14

[0147] Table 15 shows the high-order coefficients of each aspheric mirror surface that can be used in Example 5, wherein the surface shape of each aspheric surface can be defined by formula (1) given in Example 1 above.

[0148] Face number A4 A6 A8 A10 A12 A14 A16 S4 -4.0896E-05 3.0602E-05 -6.5158E-06 1.0224E-06 -7.8305E-08 3.0820E-09 -4.5991E-11 S5 4.9198E-04 5.3547E-05 -1.2439E-05 1.8724E-06 -1.4221E-07 5.4857E-09 -7.7506E-11 S9 -9.8977E-04 2.8056E-04 -9.0792E-05 1.0057E-05 -4.3939E-07 0.0000E+00 0.0000E+00 S10 2.0021E-04 1.0418E-04 -1.9838E-05 1.4335E-06 -3.9364E-08 0.0000E+00 0.0000E+00

[0149] Table 15

[0150] Figure 28A 、29A 30A and 30A respectively show the axial chromatic aberration curves of the zoom lens group of Example 5 when it is in the wide-angle state, the intermediate state and the telephoto state, which indicate that light of different wavelengths deviates from the focal point after passing through the lens. Figure 28B 、 29B 30B respectively show the astigmatism curves of the zoom lens group of Example 5 when it is in the wide-angle state, the intermediate state and the telephoto state, which represent the meridional image curvature and the sagittal image curvature. Figure 28C 、 29C 30C respectively show the distortion curves of the zoom lens group of Example 5 when it is in the wide-angle state, the intermediate state and the telephoto state, which represent the distortion magnitude values corresponding to different image heights. Figure 28D 、 29D , 30D respectively show the magnification chromatic aberration curves of the zoom lens group of Example 5 when it is in wide-angle state, intermediate state and telephoto state, which represent the deviation of different image heights on the imaging surface after the light passes through the lens. 28A to 30D It can be seen that the zoom lens assembly provided in Example 5 can achieve good imaging quality in all states.

[0151] In summary, Examples 1 to 5 respectively satisfy the relationships shown in Table 16.

[0152] Conditional formula / Example 1 2 3 4 5 FT / FW 2.00 2.00 2.00 2.00 2.00 F1 / F2 -2.05 -2.17 -1.93 -1.92 -1.92 F3 / F1 -0.89 -0.82 -0.92 -0.93 -1.02 FT / F3 1.38 1.36 1.20 1.15 1.55 FOVT(°) 10.7 10.7 12.1 12.3 10.7 R9 / R10 1.36 1.35 1.36 1.35 1.32 R4 / R6 0.90 0.88 0.97 0.96 0.59 f11 / f12 -0.62 -0.63 -0.57 -0.57 -0.59 (f21+f23) / f22 1.11 1.17 1.18 1.17 1.17 CT6 / (CT1+CT2) 0.81 0.94 0.31 0.21 1.72

[0153] Table 16

[0154] 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 zoom lens assembly described above.

[0155] 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 herein 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 having similar functions disclosed in this application.

Claims

1. A zoom lens assembly, characterized in that: Along the optical axis from the object side to the image side, they include: a first lens group having negative optical power, comprising a first lens and a second lens arranged in sequence along the optical axis, wherein the first lens and the second lens are cemented together to form a first cemented lens, the object-side surface of the first lens being concave and the image-side surface being concave; and the object-side surface of the second lens being convex and the image-side surface being concave; a second lens group having positive refractive power, comprising a third lens, a fourth lens, and a fifth lens arranged in sequence along the optical axis, wherein the fourth lens and the fifth lens are cemented together to form a second cemented lens, the object-side surface of the third lens is convex, and the image-side surface is convex; the object-side surface of the fourth lens is convex, and the image-side surface is convex; and the object-side surface of the fifth lens is concave, and the image-side surface is concave; and a third lens group having positive optical power, comprising a sixth lens having a concave object-side surface and a convex image-side surface; The zoom lens group includes three lens groups; the first lens group includes two lenses having optical power; the second lens group includes three lenses having optical power; and the third lens group includes one lens having optical power. changing the distance between the first lens group and the second lens group on the optical axis and the distance between the second lens group and the third lens group on the optical axis to switch the zoom lens group from a wide-angle state to a telephoto state; The total effective focal length FT of the zoom lens group when in the telephoto state and the total effective focal length FW of the zoom lens group when in the wide-angle state satisfy the following: FT / FW=2.0; The total effective focal length FT of the zoom lens group in the telephoto state and the effective focal length F3 of the third lens group satisfy the following: 1.15≤FT / F3≤1.55; The effective focal length f21 of the third lens, the effective focal length f23 of the fifth lens, and the effective focal length f22 of the fourth lens satisfy the following: 1.11≤(f21+f23) / f22≤1.

18.

2. The zoom lens assembly according to claim 1, wherein: The effective focal length F1 of the first lens group and the effective focal length F2 of the second lens group satisfy: -2.2<F1 / F2<-1.

9.

3. The zoom lens assembly according to claim 1, wherein: The effective focal length F3 of the third lens group and the effective focal length F1 of the first lens group satisfy the following: -1.02≤F3 / F1<-0.

8.

4. The zoom lens assembly according to claim 1, wherein: The maximum field of view angle FOVT of the zoom lens group when in the telephoto state satisfies the following: 10.7°≤FOVT≤12.3°.

5. The zoom lens assembly according to claim 1, wherein: A curvature radius R9 of the object-side surface of the sixth lens and a curvature radius R10 of the image-side surface of the sixth lens satisfy: 1.3<R9 / R10<1.

4.

6. The zoom lens assembly according to claim 1, wherein: A curvature radius R4 of the object-side surface of the third lens and a curvature radius R6 of the object-side surface of the fourth lens satisfy: 0.59≤R4 / R6<1.

0.

7. The zoom lens assembly according to claim 1, wherein: The effective focal length f11 of the first lens and the effective focal length f12 of the second lens satisfy the following: -0.63≤f11 / f12≤-0.

57.

8. The zoom lens assembly according to claim 1, wherein: A center thickness CT6 of the sixth lens on the optical axis, a center thickness CT1 of the first lens on the optical axis, and a center thickness CT2 of the second lens on the optical axis satisfy the following: 0.2<CT6 / (CT1+CT2)≤1.72.

Images