Optical imaging lens

Abstract

Embodiments of the present application disclose an optical imaging lens, comprising, in sequence from the object side to the image side along the optical axis: a first lens group comprising a first lens with positive refractive power, the object side surface of which is convex, and the image side surface of which is concave; a second lens group comprising a second lens with positive refractive power, a third lens with refractive power and a fourth lens with refractive power, wherein the object side surface of the second lens is convex, and the image side surface of the second lens is convex; the image side surface of the fourth lens is concave; a third lens group comprising a fifth lens with positive refractive power and a sixth lens with refractive power, wherein the object side surface of the fifth lens is convex, the object side surface of the sixth lens is concave, and the image side surface of the sixth lens is convex; and a prism; wherein the optical imaging lens is switched between a first state and a second state by moving the second lens group and the third lens group in the optical imaging lens.

Description

Technical Field

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

[0002] Nowadays, high-definition imaging lenses are playing an increasingly important role in portable electronic products such as smartphones. People have placed more demands on imaging lenses. On the one hand, they have higher requirements for image quality, and on the other hand, they hope to meet the shooting needs of different focal lengths.

[0003] To meet people's diverse photography needs, lenses are beginning to develop in the direction of longer focal lengths and optical zoom. However, as portable electronic products tend to be miniaturized, the overall length and height of lenses are limited, and the range of group movement is small, which increases the difficulty of lens design.

[0004] Therefore, in response to the above needs and the current development status of imaging lenses, technical personnel in this field are committed to designing an imaging lens with one or more characteristics such as a periscope structure, a long focal length, optical zoom, and good imaging quality to meet the high requirements of the ever-evolving market applications. Summary of the Invention

[0005] According to one aspect of the present application, an optical imaging lens is provided, which sequentially includes, from the object side to the image side along the optical axis: a first lens group including a first lens with a positive optical power, the object side of which is convex and the image side of which is concave; a second lens group including a second lens with a positive optical power, a third lens with an optical power, and a fourth lens with an optical power, wherein the object side of the second lens is convex and the image side of which is convex; the image side of the fourth lens is concave; a third lens group including a fifth lens with a positive optical power and a sixth lens with an optical power, wherein the object side of the fifth lens is convex, the object side of the sixth lens is concave, and the image side of which is convex; and a prism; wherein, focusing is performed by moving the positions of the second lens group and the third lens group in the optical imaging lens, so that the optical imaging lens switches between a first state and a second state; the distance TTLb from the object side of the first lens to the imaging surface on the optical axis in the second state, the effective focal length fb of the optical imaging lens in the second state, and half of the maximum field angle Semi-FOVb of the optical imaging lens in the second state satisfy: 8.1 < TTLb / fb / tan(Semi-FOVb) < 8.9; the effective focal length fa of the optical imaging lens in the first state and the effective focal length f2 of the second lens satisfy: 2.1 < fa / f2 < 5.5; the distance TG2 of the second lens group on the optical axis and the central thickness PT of the prism satisfy: 0.5 < TG2 / PT < 1.2; and the central thickness CT5 of the fifth lens, the central thickness CT6 of the sixth lens, and the air gap T56 between the fifth lens and the sixth lens on the optical axis satisfy: 0.5 < (CT5 + CT6) / T56 < 6.5.

[0006] In one or more embodiments, the distance TTLa from the object side of the first lens to the imaging surface on the optical axis in the first state, the effective focal length fa of the optical imaging lens in the first state, and the f-number FNOa of the optical imaging lens in the first state satisfy: 4.2 < TTLa / fa FNOa < 4.5.

[0007] In one or more embodiments, the effective focal length f2 of the second lens, the radius of curvature R3 of the object side of the second lens, and the radius of curvature R4 of the image side of the second lens satisfy: 0.6 < |f2 / (R3 + R4)| < 24.0.

[0008] In one or more embodiments, the effective semi-aperture DT11 of the object side of the first lens and the effective semi-aperture DT41 of the object side of the fourth lens satisfy: 1.7 < DT11 / DT41 < 2.3.

[0009] In one or more embodiments, the center thickness CT4 of the fourth lens, the center thickness CT5 of the fifth lens, and the air interval T45 between the fourth lens and the fifth lens on the optical axis satisfy: 0.3<(CT4+CT5) / T45<2.6.

[0010] In one or more embodiments, the effective half-aperture DT42 of the image side surface of the fourth lens and the effective half-aperture DT62 of the image side surface of the sixth lens satisfy the following relationship: 0.5 <DT42 / DT62<0.8。

[0011] In one or more embodiments, the effective focal length fa of the optical imaging lens in the first state, the effective focal length fb of the optical imaging lens in the second state, and the combined focal length f56 of the fifth lens and the sixth lens satisfy the following conditions: 0.8 <fa / f56<1.5;1.6<fb / f56<1.5。

[0012] In one or more embodiments, the effective focal length f1 of the first lens and the combined focal length f56 of the fifth lens and the sixth lens satisfy: 2.0 <f1 / f56<3.5。

[0013] In one or more embodiments, the distance TG2 of the second lens group on the optical axis, the center thickness CT2 of the second lens, the center thickness CT3 of the third lens, and the center thickness CT4 of the fourth lens satisfy: 1.42≤TG2 / (CT2+CT3+CT4)<2.3.

[0014] In one or more embodiments, the center thickness CT2 of the second lens, the center thickness CT3 of the third lens, and the center thickness CT4 of the fourth lens satisfy the following conditions: 3.0<(CT2+CT4) / CT3<5.1; 2.0 <CT2 / CT3<2.8。

[0015] In one or more embodiments, the center thickness CT6 of the sixth lens and the distance TG3 on the optical axis of the third lens group satisfy: <CT6 / TG3<0.6。

[0016] In one or more embodiments, the center thickness CT1 of the first lens, the edge thickness of the first lens at the maximum effective semi-aperture, and the refractive index N1 of the first lens satisfy: 2.0 <CT1 / ET1 N1<3.1.

[0017] In one or more embodiments, the curvature radius R12 of the image side surface of the sixth lens, the center thickness CT6 of the sixth lens, and the refractive index N6 of the sixth lens satisfy: -8.7 <R12 / CT6 / N6<-1.7。

[0018] In one or more embodiments, the effective semi-aperture DT21 of the object-side surface of the second lens, the effective semi-aperture DT22 of the image-side surface of the second lens, the effective semi-aperture DT41 of the object-side surface of the fourth lens, and the effective semi-aperture DT42 of the image-side surface of the fourth lens satisfy the following: 1.2<(DT21+DT22) / (DT41+DT42)<1.5.

[0019] In one or more embodiments, in the first state, the distance TD1 from the object side surface of the first lens to the image side surface of the sixth lens on the optical axis and the distance TG2 from the second lens group on the optical axis satisfy: 3.7 <TD1 / TG2<5.8。

[0020] In one or more embodiments, the first variable gap variable ΔD1 of the optical imaging lens and the second variable gap variable ΔD2 of the optical imaging lens satisfy: 0<ΔD1 / ΔD2<2.8.

[0021] In one or more embodiments, the effective focal length fa of the optical imaging lens in the first state, the effective focal length fb of the optical imaging lens in the second state, the first variable gap variable ΔD1 of the optical imaging lens, and the second variable gap variable ΔD2 of the optical imaging lens satisfy the following: 0<(fa-fb) / (ΔD1+ΔD2)<0.6.

[0022] In one or more embodiments, the first variable gap variable ΔD1 of the optical imaging lens satisfies: 1.0<ΔD1<3.1.

[0023] According to another aspect of the present application, an optical imaging lens is further provided, which sequentially includes, from the object side to the image side along the optical axis: a first lens group including a first lens with a positive optical power, the object side of which is convex and the image side of which is concave; a second lens group including a second lens with a positive optical power, a third lens with an optical power, and a fourth lens with an optical power, wherein the object side of the second lens is convex and the image side of the second lens is convex; the image side of the fourth lens is concave; a third lens group including a fifth lens with a positive optical power and a sixth lens with an optical power, wherein the object side of the fifth lens is convex, the object side of the sixth lens is concave, and the image side of the sixth lens is convex; and a prism; wherein, focusing is performed by moving the positions of the second lens group and the third lens group in the optical imaging lens, so that the optical imaging lens is switched between a first state and a second state; the distance TTLb from the object side of the first lens to the imaging surface on the optical axis in the second state, the effective focal length fb of the optical imaging lens in the second state, and half of the maximum field angle Semi-FOVb of the optical imaging lens in the second state satisfy: 8.1 < TTLb / fb / tan(Semi-FOVb) < 8.9; the central thickness CT5 of the fifth lens, the central thickness CT6 of the sixth lens, and the air gap T56 between the fifth lens and the sixth lens on the optical axis satisfy: 0.5 < (CT5 + CT6) / T56 < 6.5; the distance TG2 of the second lens group on the optical axis, the central thickness CT2 of the second lens, the central thickness CT3 of the third lens, and the central thickness CT4 of the fourth lens satisfy: 1.42 ≤ TG2 / (CT2 + CT3 + CT4) < 2.3; and the first change gap variable △D1 of the optical imaging lens satisfies: 1.0 < △D1 < 3.1.

[0024] In one or more embodiments, the distance TTLa from the object side of the first lens to the imaging surface on the optical axis in the first state, the effective focal length fa of the optical imaging lens in the first state, and the f-number FNOa of the optical imaging lens in the first state satisfy: 4.2 < TTLa / fa FNOa < 4.5.

[0025] In one or more embodiments, the effective focal length f₂ of the second lens, the radius of curvature R₃ of the object side of the second lens, and the radius of curvature R₄ of the image side of the second lens satisfy: 0.6 < |f₂ / (R₃ + R₄)| < 24.0.

[0026] In one or more embodiments, the effective semi-aperture DT₁₁ of the object side of the first lens and the effective semi-aperture DT₄₁ of the object side of the fourth lens satisfy: 1.7 < DT₁₁ / DT₄₁ < 2.3.

[0027] In one or more embodiments, the center thickness CT4 of the fourth lens, the center thickness CT5 of the fifth lens, and the air interval T45 between the fourth lens and the fifth lens on the optical axis satisfy: 0.3<(CT4+CT5) / T45<2.6.

[0028] In one or more embodiments, the effective half-aperture DT42 of the image side surface of the fourth lens and the effective half-aperture DT62 of the image side surface of the sixth lens satisfy the following relationship: 0.5 <DT42 / DT62<0.8。

[0029] In one or more embodiments, the effective focal length fa of the optical imaging lens in the first state, the effective focal length fb of the optical imaging lens in the second state, and the combined focal length f56 of the fifth lens and the sixth lens satisfy the following conditions: 0.8 <fa / f56<1.5;1.6<fb / f56<1.5。

[0030] In one or more embodiments, the effective focal length f1 of the first lens and the combined focal length f56 of the fifth lens and the sixth lens satisfy: 2.0 <f1 / f56<3.5。

[0031] In one or more embodiments, the effective focal length fa of the optical imaging lens in the first state and the effective focal length f2 of the second lens satisfy: 2.1 <fa / f2<5.5。

[0032] In one or more embodiments, the distance TG2 of the second lens group on the optical axis and the center thickness PT of the prism satisfy: 0.5 <TG2 / PT<1.2。

[0033] In one or more embodiments, the center thickness CT2 of the second lens, the center thickness CT3 of the third lens, and the center thickness CT4 of the fourth lens satisfy the following conditions: 3.0<(CT2+CT4) / CT3<5.1; 2.0 <CT2 / CT3<2.8。

[0034] In one or more embodiments, the center thickness CT6 of the sixth lens and the distance TG3 on the optical axis of the third lens group satisfy: <CT6 / TG3<0.6。

[0035] In one or more embodiments, the center thickness CT1 of the first lens, the edge thickness of the first lens at the maximum effective semi-aperture, and the refractive index N1 of the first lens satisfy: 2.0 <CT1 / ET1 N1<3.1.

[0036] In one or more embodiments, the curvature radius R12 of the image side surface of the sixth lens, the center thickness CT6 of the sixth lens, and the refractive index N6 of the sixth lens satisfy: -8.7 <R12 / CT6 / N6<-1.7。

[0037] In one or more embodiments, the effective semi-aperture DT21 of the object side surface of the second lens, the effective semi-aperture DT22 of the image side surface of the second lens, the effective semi-aperture DT41 of the object side surface of the fourth lens, and the effective semi-aperture DT42 of the image side surface of the fourth lens satisfy: 1.2 < (DT21 + DT22) / (DT41 + DT42) < 1.5.

[0038] In one or more embodiments, the distance TD1 on the optical axis from the object side surface of the first lens to the image side surface of the sixth lens in the first state and the distance TG2 of the second lens group on the optical axis satisfy: 3.7 < TD1 / TG2 < 5.8.

[0039] In one or more embodiments, the first variable change gap △D1 of the optical imaging lens and the second variable change gap △D2 of the optical imaging lens satisfy: 0 < △D1 / △D2 < 2.8.

[0040] In one or more embodiments, the effective focal length fa of the optical imaging lens in the first state, the effective focal length fb of the optical imaging lens in the second state, the first variable change gap △D1 of the optical imaging lens, and the second variable change gap △D2 of the optical imaging lens satisfy: 0 < (fa - fb) / (△D1 + △D2) < 0.6.

[0041] The optical imaging lens provided according to the embodiments of the present application may include a first lens group, a second lens group, a third lens group, and a prism. The second lens group and the third lens group can move along the optical axis to achieve continuous change of the focal length of the optical imaging lens, so that focusing can be performed when the object distance of the optical imaging lens changes, and good imaging quality can be obtained at different object distances. At the same time, by satisfying 8.1 < TTLb / fb / tan(Semi - FOVb) < 8.9, it is beneficial to achieve a smaller overall optical length at a larger focal length, ensuring good imaging quality when shooting at a longer distance. By satisfying 2.1 < fa / f2 < 5.5, the deflection angle of the marginal rays of the lens in the first state on the second lens can be effectively controlled, reducing system sensitivity. By satisfying 0.5 < TG2 / PT < 1.2, it is beneficial to restrict the movement stroke of the second lens group when the optical imaging lens switches between the first state and the second state, avoiding the problem that the motor cannot drive the group. By satisfying 0.5 < (CT5 + CT6) / T56 < 6.5, it is beneficial to restrict the movement stroke of the third lens group and the overall thickness - to - thinness ratio of the lenses in the third lens group, helping to improve the stability of the optical system assembly. Brief Description of the Drawings

[0042] By reading the detailed description of the non - restrictive embodiments made with reference to the following drawings, other features, objects, and advantages of the present application will become more obvious:

[0043] Figure 1A and Figure 1B Schematic diagrams showing the structure of the optical imaging lens in a first state and a second state according to Example 1 of the present application are shown respectively;

[0044] 2A and Figure 2B 10. The figures respectively show the distortion curve and the magnification chromatic aberration curve of the optical imaging lens in the first state according to Example 1 of the present application;

[0045] 2C and Figure 2D 10. The figures respectively show the distortion curve and the chromatic aberration curve of the optical imaging lens in the second state according to Example 1 of the present application;

[0046] Figure 3A and Figure 3B Schematic diagrams showing the structure of an optical imaging lens in a first state and a second state according to Example 2 of the present application are shown respectively;

[0047] 4A and Figure 4B 10. The distortion curve and the chromatic aberration curve of the optical imaging lens according to Example 2 of the present application in the first state are respectively shown;

[0048] 4C and Figure 4D 10. The figures respectively show the distortion curve and the chromatic aberration curve of the optical imaging lens in the second state according to Example 2 of the present application;

[0049] Figure 5A and Figure 5B Schematic diagrams showing the structure of an optical imaging lens in a first state and a second state according to Example 3 of the present application are shown respectively;

[0050] 6A and Figure 6B 10. The figures respectively show the distortion curve and the chromatic aberration curve of the optical imaging lens in the first state according to Example 3 of the present application;

[0051] 6C and Figure 6D 10. The figures respectively show the distortion curve and the chromatic aberration curve of the optical imaging lens in the second state according to Example 3 of the present application;

[0052] Figure 7A and Figure 7B Schematic diagrams showing the structure of an optical imaging lens in a first state and a second state according to Example 4 of the present application are shown respectively;

[0053] 8A and Figure 8B 10. The distortion curve and the chromatic aberration curve of the optical imaging lens in the first state according to Example 4 of the present application are respectively shown;

[0054] 8C and Figure 8D10. The distortion curve and the chromatic aberration curve of the optical imaging lens in the second state according to Example 4 of the present application are respectively shown;

[0055] Figure 9A and Figure 9B Schematic diagrams showing the structure of an optical imaging lens in a first state and a second state according to Example 5 of the present application are shown respectively;

[0056] 10A and Figure 10B 10. The distortion curve and the chromatic aberration curve of the optical imaging lens in the first state according to Example 5 of the present application are respectively shown;

[0057] 10C and Figure 10D 10. The distortion curve and the chromatic aberration curve of the optical imaging lens in the second state according to Example 5 of the present application are respectively shown;

[0058] Figure 11A and Figure 11B Schematic diagrams showing the structure of the optical imaging lens in a first state and a second state according to Example 6 of the present application are shown respectively;

[0059] 12A and Figure 12B 10. The figures respectively show the distortion curve and the chromatic aberration curve of the optical imaging lens in the first state according to Example 6 of the present application;

[0060] 12C and Figure 12D 10. The distortion curve and the chromatic aberration curve of the optical imaging lens according to Example 6 of the present application in the second state are respectively shown;

[0061] Figure 13A and Figure 13B Schematic diagrams showing the structure of an optical imaging lens in a first state and a second state according to Example 7 of the present application are shown respectively;

[0062] 14A and Figure 14B 10. The figures respectively show a distortion curve and a magnification chromatic aberration curve of the optical imaging lens according to Example 7 of the present application in a first state;

[0063] 14C and Figure 14D 10. The distortion curve and the chromatic aberration curve of the optical imaging lens in the second state according to Example 7 of the present application are respectively shown;

[0064] Figure 15A and Figure 15B Schematic diagrams showing the structure of the optical imaging lens in a first state and a second state according to Example 8 of the present application are shown respectively;

[0065] 16A and Figure 16B 10. The distortion curve and the chromatic aberration curve of the optical imaging lens according to Example 8 of the present application in the first state are respectively shown;

[0066] 16C and Figure 16D 10. The figures respectively show the distortion curve and the chromatic aberration curve of the optical imaging lens in the second state according to Example 8 of the present application;

[0067] Figure 17A and Figure 17B Schematic diagrams showing the structure of the optical imaging lens in a first state and a second state according to Example 9 of the present application are shown respectively;

[0068] 18A and Figure 18B 10. The distortion curve and the chromatic aberration curve of the optical imaging lens according to Example 9 of the present application in the first state are respectively shown;

[0069] 18C and Figure 18D 10 respectively show the distortion curve and the magnification chromatic aberration curve of the optical imaging lens according to Example 9 of the present application in the second state; and

[0070] Figure 19 Graph showing the distance of the second lens group of the optical imaging lens system of the present application on the optical axis. DETAILED DESCRIPTION

[0071] 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.

[0072] 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.

[0073] 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.

[0074] 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.

[0075] 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.

[0076] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It should also be understood that terms (such as those defined in 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.

[0077] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The following examples only express several implementation methods of the present application, and their descriptions are relatively specific and detailed, but they should not be understood as limiting the scope of the patent application. It should be pointed out that for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all fall within the scope of protection of the present application.

[0078] The features, principles and other aspects of the present application are described in detail below.

[0079] refer to Figure 1A and Figure 1B As shown, according to an exemplary embodiment of the present application, an optical imaging lens is provided, which may include a first lens group, a second lens group, a third lens group, and a prism, arranged in sequence from the object side to the image side along the optical axis. The first lens group may include a first lens with positive optical power; the second lens group may include, in sequence from the object side to the image side, a second lens with positive optical power, a third lens with optical power, and a fourth lens with optical power; and the third lens group may include, in sequence from the object side to the image side, a fifth lens with positive optical power and a sixth lens with optical power. Any two adjacent lenses from the first to the sixth lenses may be separated by a distance.

[0080] In an exemplary embodiment, the object-side surface of the first lens may be convex, and the image-side surface may be concave; the object-side surface of the second lens may be convex, and the image-side surface may be convex; the image-side surface of the fourth lens may be concave; the object-side surface of the fifth lens may be convex; and the object-side surface of the sixth lens may be concave, and the image-side surface may be convex. By rationally allocating the positive and negative optical powers and surface shapes of some lenses in the optical imaging lens, the aberrations of the system can be effectively balanced, resulting in a system with better imaging quality and processability.

[0081] In an exemplary embodiment, the second and third lens groups are movable along the optical axis to adjust focus as the object distance changes by shifting the positions of the second and third lens groups within the optical imaging lens, thereby switching the optical imaging lens between a first state and a second state. For example, the first state may be a telephoto mode, and the second state may be a macro mode. As the second and third lens groups move along the optical axis, the focal length of the optical imaging lens can be continuously varied, ensuring smooth focusing as the object distance changes, thereby achieving excellent image quality in all shooting modes with varying object distances.

[0082] In an exemplary embodiment, a prism may be positioned between the first and second lens groups and may move along the optical axis with the second lens group. The placement of the prism allows light to be refracted and / or reflected, thereby reducing travel distance and facilitating a reduction in overall lens length. Furthermore, the prism may be positioned elsewhere, or a group of prisms may be provided as desired; this is not a limitation of the present application.

[0083] In an exemplary embodiment, during the transition of the optical imaging lens from a first state to a second state, or vice versa, the spacing between the first lens group and the prism can be varied, the spacing between the second lens group and the third lens group can be varied, and the spacing between the third lens group and the imaging plane can also be varied. Thus, the optical imaging lens has three adjustable gaps: for example, a first gap D1 can be defined between the image side surface of the first lens and the object side surface of the prism; a second gap D2 can be defined between the image side surface of the fourth lens and the object side surface of the fifth lens; and a third gap D3 can be defined between the image side surface of the sixth lens and the object side surface of the filter. Hereinafter, the variation range of the first gap D1 is referred to as the first variation gap variable ΔD1 of the optical imaging lens, and the variation range of the second gap D2 is referred to as the second variation gap variable ΔD2 of the optical imaging lens.

[0084] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 8.1 < TTLb / fb / tan(Semi - FOVb) < 8.9, where TTLb is the distance from the object side surface of the first lens to the imaging surface on the optical axis in the second state, fb is the effective focal length of the optical imaging lens in the second state, and Semi - FOVb is half of the maximum field angle of the optical imaging lens in the second state. By the constraint of 8.1 < TTLb / fb / tan(Semi - FOVb) < 8.9, it is beneficial to achieve a smaller overall optical length at a larger focal length, ensuring better imaging quality when shooting at a longer distance.

[0085] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 0.5 < (CT5 + CT6) / T56 < 6.5, where CT5 is the central thickness of the fifth lens, CT6 is the central thickness of the sixth lens, and T56 is the air gap between the fifth lens and the sixth lens on the optical axis. By satisfying 0.5 < (CT5 + CT6) / T56 < 6.5, it is beneficial to restrict the movement stroke of the third lens group and the overall thickness - to - thinness ratio of the lenses in the third lens group, contributing to improving the stability of the optical system assembly.

[0086] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 2.1 < fa / f2 < 5.5, where fa is the effective focal length of the optical imaging lens in the first state, and f2 is the effective focal length of the second lens. By satisfying 2.1 < fa / f2 < 5.5, the deflection angle of the marginal rays of the lens in the first state on the second lens can be effectively controlled, reducing the system sensitivity.

[0087] Reference Figure 19 As shown, in an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 0.5 < TG2 / PT < 1.2, where TG2 is the distance of the second lens group on the optical axis, and PT is the central thickness of the prism. By satisfying 0.5 < TG2 / PT < 1.2, it is beneficial to restrict the movement stroke of the second lens group when the optical imaging lens switches between the first state and the second state, avoiding the problem that the motor cannot drive the lens group.

[0088] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 1.42 ≤ TG2 / (CT2 + CT3 + CT4) < 2.3, where TG2 is the distance of the second lens group on the optical axis, CT2 is the central thickness of the second lens, CT3 is the central thickness of the third lens, and CT4 is the central thickness of the fourth lens. By satisfying 1.42 ≤ TG2 / (CT2 + CT3 + CT4) < 2.3, the ratio of the sizes of the lenses in the second lens group is controlled within a reasonable range, which can effectively control the size of the second lens group and the positional relationship between the second lens group and the middle prism, and reduce the processing and assembly difficulty of the lens.

[0089] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 1.0 < △D1 < 3.1, where △D1 is the first change gap variable of the optical imaging lens. By satisfying 1.0 < △D1 < 3.1, through the control of the first gap variable of the optical imaging lens, the distance between the first lens and the middle prism can be better controlled, and the volume of the entire optical system can be reduced.

[0090] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 4.2 < TTLa / fa FNOa < 4.5, where TTLa is the distance from the object side of the first lens to the imaging surface on the optical axis in the first state, fa is the effective focal length of the optical imaging lens in the first state, and FNOa is the aperture number of the optical imaging lens in the first state. By satisfying 4.2 < TTLa / fa FNOa < 4.5, it is beneficial to ensure the telephoto characteristics of the lens in the first state, and at the same time, the aperture number is constrained to enable the lens to have sufficient depth of field to obtain the best imaging quality.

[0091] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 0.6 < |f2 / (R3 + R4)| < 24.0, where f2 is the effective focal length of the second lens, R3 is the curvature radius of the object side of the second lens, and R4 is the curvature radius of the image side of the second lens. By satisfying 0.6 < |f2 / (R3 + R4)| < 24.0, the field curvature of the optical imaging lens can be effectively adjusted, thereby obtaining better imaging quality and reducing the processing difficulty of the second lens at the same time.

[0092] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 1.7 < DT11 / DT41 < 2.3, where DT11 is the effective semi-aperture of the object side of the first lens, and DT41 is the effective semi-aperture of the object side of the fourth lens. By satisfying 1.7 < DT11 / DT41 < 2.3, the size of the rear end of the lens can be effectively reduced, and at the same time, on the premise of ensuring the edge field illumination, the chromatic aberration of the lens can be balanced.

[0093] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.3 < (CT4 + CT5) / T45 < 2.6, where CT4 is the central thickness of the fourth lens, CT5 is the central thickness of the fifth lens, and T45 is the air gap between the fourth lens and the fifth lens on the optical axis. Satisfying 0.3 < (CT4 + CT5) / T45 < 2.6 can effectively distribute the optical power of the second lens group and the third lens group in the optical system, play a role in balancing the aberrations of the optical system, and at the same time can effectively restrict the position distribution and thickness balance of the second lens group and the third lens group, having high practical application value.

[0094] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.5 < DT42 / DT62 < 0.8, where DT42 is the effective semi-aperture of the image side of the fourth lens, and DT62 is the effective semi-aperture of the image side of the sixth lens. Satisfying 0.5 < DT42 / DT62 < 0.8 can make the light rays of the second lens group and the third lens group flow smoothly, and when the second lens group and the third lens group achieve optical zoom by moving, the optical imaging lens can have a better matching with the chip CRA in different states.

[0095] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.8 < fa / f56 < 1.5; 1.6 < fb / f56 < 1.5, where fa is the effective focal length of the optical imaging lens in the first state, f56 is the combined focal length of the fifth lens and the sixth lens, and fb is the effective focal length of the optical imaging lens in the second state. Satisfying 0.8 < fa / f56 < 1.5 and 1.6 < fb / f56 < 1.5 can better balance the aberrations in the first state and the second state, making the overall imaging quality better.

[0096] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 2.0 < f1 / fed56 < 3.5, where f1 is the effective focal length of the first lens, and f56 is the combined focal length of the fifth lens and the sixth lens. Satisfying 2.0 < f1 / f56 < 3.5 can restrict the optical power distribution of the first lens, as well as the fifth lens and the sixth lens in the system, and thus play a role in balancing the aberrations of the optical system.

[0097] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 1.42 ≤ TG2 / (CT2 + CT3 + CT4) < 2.3, where TG2 is the distance of the second lens group on the optical axis, CT2 is the central thickness of the second lens, CT3 is the central thickness of the third lens, and CT4 is the central thickness of the fourth lens. Satisfying 1.42 ≤ TG2 / (CT2 + CT3 + CT4) < 2.3 can effectively control the size of the second lens group and the positional relationship between the second lens group and the middle prism, and reduce the processing and assembly difficulty of the lens.

[0098] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 3.0 < (CT2 + CT4) / CT3 < 5.1, 2.0 < CT2 / CT3 < 2.8, where CT2 is the central thickness of the second lens, CT3 is the central thickness of the third lens, and CT4 is the central thickness of the fourth lens. Satisfying 3.0 < (CT2 + CT4) / CT3 < 5.1 and 2.0 < CT2 / CT3 < 2.8 can make the thicknesses of the three lenses in the second lens group more uniform, reduce the processing difficulty of optical elements, and at the same time make the assembly of the optical imaging lens more stable.

[0099] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 0 < CT6 / TG3 < 0.6, where CT6 is the central thickness of the sixth lens and TG3 is the distance of the third lens group on the optical axis. Satisfying 0 < CT6 / TG3 < 0.6 can effectively control the size and spatial distribution of the third lens group, ensure good processability of optical elements, and achieve a high space utilization rate. [[ID=⑧]]

[0100] [[ID=⑨]]In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 2.0 < CT1 / ET1 [[ID=⑩]] [[ID=⑪]]N1 < 3.1, where CT1 is the central thickness of the first lens, ET1 is the edge thickness at the maximum effective semi-aperture of the first lens, and N1 is the refractive index of the first lens. Satisfying 2.0 < CT1 / ET1 [[ID=⑫]] [[ID=⑬]]N1 < 3.1 can effectively restrict the thickness ratio of the first lens and ensure good processability of the first lens. [[ID=⑭]] [[ID=⑮]]

[0101] [[ID=⑯]]In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: -8.7 < R12 / CT6 / N6 < -1.7, where R12 is the curvature radius of the image side of the sixth lens, CT6 is the central thickness of the sixth lens, and N6 is the refractive index of the sixth lens. Satisfying -8.7 < R12 / CT6 / N6 < -1.7 can effectively control the bending degree of the lens of the sixth lens, improve the processability of the lens; at the same time, it can effectively control the deflection degree of the marginal rays passing through the sixth lens and weaken the influence of ghost images. [[ID=⑰]]

[0102] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 1.2 < (DT21 + DT22) / (DT41 + DT42) < 1.5, where DT21 is the effective semi-aperture of the object side of the second lens, DT22 is the effective semi-aperture of the image side of the second lens, DT41 is the effective semi-aperture of the object side of the fourth lens, and DT42 is the effective semi-aperture of the image side of the fourth lens. Satisfying 1.2 < (DT21 + DT22) / (DT41 + DT42) < 1.5 can effectively control the height of the second lens group, ensure the radial size of the lens, and ensure the miniaturization of the lens.

[0103] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 3.7 < TD1 / TG2 < 5.8, where TD1 is the distance on the optical axis from the object side of the first lens to the image side of the sixth lens, and TG2 is the distance of the second lens group on the optical axis. Satisfying 3.7 < TD1 / TG2 < 5.8 can effectively control the proportion of the second lens group in the entire optical system, reserve sufficient moving distance for optical zoom, and thus have higher adaptability to the module end.

[0104] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 0 < △D1 / △D2 < 2.8, where △D1 is the first change gap variable of the optical imaging lens, and △D2 is the second change gap variable of the optical imaging lens. Satisfying 0 < △D1 / △D2 < 2.8 can reasonably control the relative positions of the second lens group and the third lens group during movement, and ensure good imaging effects within the range of moving zoom.

[0105] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy: 0 < (fa - fb) / (△D1 + △D2) < 0.6, where fa is the effective focal length of the optical imaging lens in the first state, fb is the effective focal length of the optical imaging lens in the second state, △D1 is the first change gap variable of the optical imaging lens, and △D2 is the second change gap variable of the optical imaging lens. Satisfying 0 < (fa - fb) / (△D1 + △D2) < 0.6 can effectively control the positional relationship between the optical imaging lens and the middle prism when switching between the first state and the second state, and reduce the difficulty of system structure design.

[0106] In an exemplary embodiment, the optical imaging lens according to the present application may further include an aperture disposed between the second lens and the third lens. The setting of the aperture is beneficial to effectively converge the light entering the optical lens and is beneficial to reducing the aperture of the lens.

[0107] In an exemplary embodiment, the optical imaging lens according to the present application may further include a filter for correcting color deviation and / or a protective glass for protecting a photosensitive element located on the imaging surface.

[0108] In an embodiment of the present application, at least one of the mirror surfaces of each lens from the first lens to the sixth lens is an aspheric mirror surface. The characteristic of an aspheric 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 aspheric lens has a better curvature radius characteristic, and has the advantages of improving distortion aberration and improving astigmatism aberration. After adopting an aspheric lens, the aberration that occurs during imaging can be eliminated as much as possible, thereby improving the imaging quality. Optionally, the object side and image side of each lens from the first lens to the sixth lens can adopt an aspheric mirror surface.

[0109] However, those skilled in the art will appreciate that the number of lenses comprising the optical imaging lens can be varied to achieve the various results and advantages described herein without departing from the claimed technical solutions. For example, while the embodiments describe six lenses as an example, the optical imaging lens of the present application is not limited to six lenses. If desired, the optical imaging lens may also include other numbers of lenses.

[0110] Examples 1 to 9 of the optical imaging lens applicable to the above exemplary embodiments are further described below with reference to the accompanying drawings.

[0111] Example 1

[0112] The following reference Figures 1A to 2D The optical imaging lens according to Example 1 of the present application is described. Figure 1A FIG2 shows a schematic structural diagram of an optical imaging lens in a first state according to Example 1 of the present application. Figure 1B The diagram shows the structure of the optical imaging lens in the second state according to the first embodiment of the present application. The first state may be a telephoto mode, and the second state may be a close-up mode.

[0113] like Figure 1A and Figure 1B As shown, the optical imaging lens comprises, from the object side to the image side, a first lens group, a prism P, a second lens group, and a third lens group. The first lens group includes a first lens E1, the second lens group includes a second lens E2, an aperture STO, a third lens E3, and a fourth lens E4, and the third lens group includes a fifth lens E5 and a sixth lens E6.

[0114] In this embodiment, 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 S5 being convex and its image-side surface S6 being convex. The third lens E3 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fourth lens E4 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being concave. The fifth lens E5 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being convex. The sixth lens E6 has positive optical power, with its object-side surface S13 being concave and its image-side surface S14 being convex. The optical imaging lens may further include a filter E7 disposed between the sixth lens E6 and the imaging surface S17. The filter E7 has an object-side surface S15 and an image-side surface S16. Light from an object sequentially passes through each of the surfaces S1 to S16 and is ultimately imaged on the imaging surface S17.

[0115] Table 1 shows the basic parameters of the optical imaging lens of Example 1, wherein the units of curvature radius and thickness / distance are all millimeters (mm).

[0116]

[0117] Table 1

[0118] In Example 1, the object side surface and the image side surface of any lens from the first lens E1 to the sixth lens E6 are both aspherical surfaces, and the surface shape of each aspherical lens is The following aspheric formulas can be used for definition, but are not limited to:

[0119] (1)

[0120] in, Aspheric surface along the optical axis at a height of h When the position is , the distance from the vertex of the aspherical surface is high; c is the paraxial curvature of the aspheric surface, c =1 / R (i.e., paraxial curvature c is the reciprocal of the curvature radius R in Table 1 above); k is the cone coefficient; Ai Aspheric i -th order correction factor.

[0121] Tables 2-1 and 2-2 below give the high-order coefficients of the aspherical mirror surfaces that can be used in Example 1. A 4 、 A 6 、 A 8 、 A 10 、 A 12 、A 14 、 A 16 、 A 18 、 A 20 、 A 22 、 A 24 、 A 26 、 A 28 and A 30 。

[0122]

[0123] Table 2-1

[0124]

[0125] Table 2-2

[0126] Table 3 below shows parameter settings for an optical imaging lens in its first and second states, respectively, according to an example of Example 1 of the present application. The first state is suitable for telephoto mode, and the second state is suitable for close-up mode. D1 is the distance on the optical axis from the image side of the first lens to the object side of the prism; D2 is the distance on the optical axis from the image side of the fourth lens to the object side of the fifth lens; and D3 is the distance on the optical axis from the image side of the sixth lens to the object side of the filter.

[0127]

[0128] Table 3

[0129] Figure 2A The distortion curve of the optical imaging lens of Example 1 in telephoto mode is shown, which represents the distortion magnitude values ​​corresponding to different field angles. Figure 2B The chromatic aberration curve of the optical imaging lens of Example 1 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the optical imaging lens.

[0130] Figure 2C The distortion curve of the optical imaging lens of Example 1 in close-up shooting mode is shown, which represents the distortion magnitude values ​​corresponding to different field angles. Figure 2D The chromatic aberration curve of the optical imaging lens of Example 1 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the optical imaging lens.

[0131] according to Figures 2A to 2DIt can be seen that the optical imaging lens provided in Example 1 can achieve good imaging quality in both long-range shooting and close-range shooting modes.

[0132] Example 2

[0133] The following reference 3A to 4D The optical imaging lens according to Example 2 of the present application is described. Figure 3A and Figure 3B Schematic diagrams of the structures of the optical imaging lens in a first state and a second state according to Example 2 of the present application are respectively shown.

[0134] like Figure 3A and Figure 3B As shown, the optical imaging lens comprises, from the object side to the image side, a first lens group, a prism P, a second lens group, and a third lens group. The first lens group includes a first lens E1, the second lens group includes a second lens E2, an aperture STO, a third lens E3, and a fourth lens E4, and the third lens group includes a fifth lens E5 and a sixth lens E6.

[0135] In this embodiment, 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 S5 being convex and its image-side surface S6 being convex. The third lens E3 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fourth lens E4 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being concave. The fifth lens E5 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The sixth lens E6 has positive optical power, with its object-side surface S13 being concave and its image-side surface S14 being convex. The optical imaging lens may further include a filter E7 disposed between the sixth lens E6 and the imaging surface S17. The filter E7 has an object-side surface S15 and an image-side surface S16. Light from an object sequentially passes through each of the surfaces S1 to S16 and is ultimately imaged on the imaging surface S17.

[0136] Table 4 shows the basic parameters of the optical imaging lens of Example 2, wherein the units of curvature radius and thickness / distance are all millimeters (mm).

[0137]

[0138] Table 4

[0139] In Example 2, the object side surface and the image side surface of any lens from the first lens E1 to the sixth lens E6 are both aspherical surfaces, and the surface shape of each aspherical lens is The aspheric surface formula (1) in Example 1 can be used for definition.

[0140] Tables 5-1 and 5-2 below give the high-order coefficients of the aspherical mirror surfaces that can be used in Example 2. A 4 、 A 6 、 A 8 、 A 10 、 A 12 、 A 14 、 A 16 、 A 18 、 A 20 、 A 22 、 A 24 、 A 26 、 A 28 and A 30 。

[0141]

[0142] Table 5-1

[0143]

[0144] Table 5-2

[0145] Table 6 below shows parameter settings for an optical imaging lens in its first and second states, respectively, according to an example of Example 2 of the present application. The first state is suitable for telephoto mode, and the second state is suitable for close-up mode. D1 is the distance on the optical axis from the image side of the first lens to the object side of the prism; D2 is the distance on the optical axis from the image side of the fourth lens to the object side of the fifth lens; and D3 is the distance on the optical axis from the image side of the sixth lens to the object side of the filter.

[0146]

[0147] Table 6

[0148] Figure 4A The distortion curve of the optical imaging lens of Example 2 in telephoto mode is shown, which represents the distortion values ​​corresponding to different field angles. Figure 4B The chromatic aberration curve of the optical imaging lens of Example 2 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the optical imaging lens.

[0149] Figure 4C The distortion curve of the optical imaging lens of Example 2 in close-up shooting mode is shown, which represents the distortion magnitude values ​​corresponding to different field angles. Figure 4D The chromatic aberration curve of the optical imaging lens of Example 2 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the optical imaging lens.

[0150] according to Figures 4A to 4D It can be seen that the optical imaging lens provided in Example 2 can achieve good imaging quality in both long-range shooting and close-range shooting modes.

[0151] Example 3

[0152] The following reference 5A to 6D The optical imaging lens according to Example 3 of the present application is described. Figure 5A and Figure 5B Schematic diagrams of the structures of the optical imaging lens in a first state and a second state according to Example 3 of the present application are respectively shown.

[0153] like Figure 5A and Figure 5B As shown, the optical imaging lens comprises, from the object side to the image side, a first lens group, a prism P, a second lens group, and a third lens group. The first lens group includes a first lens E1, the second lens group includes a second lens E2, an aperture STO, a third lens E3, and a fourth lens E4, and the third lens group includes a fifth lens E5 and a sixth lens E6.

[0154] In this embodiment, 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 S5 being convex and its image-side surface S6 being convex. The third lens E3 has negative optical power, with its object-side surface S7 being concave and its image-side surface S8 being convex. The fourth lens E4 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The fifth lens E5 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The sixth lens E6 has positive optical power, with its object-side surface S13 being concave and its image-side surface S14 being convex. The optical imaging lens may further include a filter E7 disposed between the sixth lens E6 and the imaging surface S17. The filter E7 has an object-side surface S15 and an image-side surface S16. Light from an object sequentially passes through each of the surfaces S1 to S16 and is ultimately imaged on the imaging surface S17.

[0155] Table 7 shows the basic parameters of the optical imaging lens of Example 3, where the units of curvature radius and thickness / distance are all millimeters (mm).

[0156]

[0157] Table 7

[0158] In Example 3, the object side surface and the image side surface of any lens from the first lens E1 to the sixth lens E6 are both aspherical surfaces, and the surface shape of each aspherical lens is The aspheric surface formula (1) in Example 1 can be used for definition.

[0159] Tables 8-1 and 8-2 below give the high-order coefficients of the aspherical mirror surfaces that can be used in Example 3. A 4 、 A 6 、 A 8 、 A 10 、 A 12 、 A 14 、 A 16 、 A 18 、 A 20 、 A 22 、 A 24 、 A 26 、 A 28 and A 30 。

[0160]

[0161] Table 8-1

[0162]

[0163] Table 8-2

[0164] Table 9 below shows parameter settings for an optical imaging lens in its first and second states, respectively, according to an example of Example 3 of the present application. The first state is suitable for telephoto mode, and the second state is suitable for close-up mode. D1 is the distance on the optical axis from the image side of the first lens to the object side of the prism; D2 is the distance on the optical axis from the image side of the fourth lens to the object side of the fifth lens; and D3 is the distance on the optical axis from the image side of the sixth lens to the object side of the filter.

[0165]

[0166] Table 9

[0167] Figure 6AThe distortion curve of the optical imaging lens of Example 3 in telephoto mode is shown, which represents the distortion magnitude values ​​corresponding to different field angles. Figure 6B The chromatic aberration curve of the optical imaging lens of Example 3 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the optical imaging lens.

[0168] Figure 6C The distortion curve of the optical imaging lens of Example 3 in close-up shooting mode is shown, which represents the distortion magnitude values ​​corresponding to different field angles. Figure 6D The chromatic aberration curve of the optical imaging lens of Example 3 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the optical imaging lens.

[0169] according to 6A to 6D It can be seen that the optical imaging lens provided in Example 3 can achieve good imaging quality in both long-range shooting and close-range shooting modes.

[0170] Example 4

[0171] The following reference 7A to 8D An optical imaging lens according to Example 4 of the present application is described. Figure 7A and Figure 7B Schematic diagrams of the structures of the optical imaging lens in a first state and a second state according to Example 4 of the present application are respectively shown.

[0172] like Figure 7A and Figure 7B As shown, the optical imaging lens comprises, from the object side to the image side, a first lens group, a prism P, a second lens group, and a third lens group. The first lens group includes a first lens E1, the second lens group includes a second lens E2, an aperture STO, a third lens E3, and a fourth lens E4, and the third lens group includes a fifth lens E5 and a sixth lens E6.

[0173] In this embodiment, 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 S5 being convex and its image-side surface S6 being convex. The third lens E3 has negative optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fourth lens E4 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The fifth lens E5 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being convex. The sixth lens E6 has negative optical power, with its object-side surface S13 being concave and its image-side surface S14 being convex. The optical imaging lens may further include a filter E7 disposed between the sixth lens E6 and the imaging surface S17. The filter E7 has an object-side surface S15 and an image-side surface S16. Light from an object sequentially passes through each of the surfaces S1 to S16 and is ultimately imaged on the imaging surface S17.

[0174] Table 10 shows the basic parameters of the optical imaging lens of Example 4, where the units of curvature radius and thickness / distance are all millimeters (mm).

[0175]

[0176] Table 10

[0177] In Example 4, the object side surface and the image side surface of any lens from the first lens E1 to the sixth lens E6 are both aspherical surfaces, and the surface shape of each aspherical lens is The aspheric surface formula (1) in Example 1 can be used for definition.

[0178] Tables 11-1 and 11-2 below give the high-order coefficients of the aspherical mirror surfaces that can be used in Example 4. A 4 、 A 6 、 A 8 、 A 10 、 A 12 、 A 14 、 A 16 、 A 18 、 A 20 、 A 22 、 A 24 、 A 26 、 A 28 and A 30 。

[0179]

[0180] Table 11-1

[0181]

[0182] Table 11-2

[0183] Table 12 below shows parameter settings for an optical imaging lens in its first and second states, respectively, according to an example of Example 4 of the present application. The first state is suitable for telephoto mode, and the second state is suitable for close-up mode. D1 is the distance on the optical axis from the image side of the first lens to the object side of the prism; D2 is the distance on the optical axis from the image side of the fourth lens to the object side of the fifth lens; and D3 is the distance on the optical axis from the image side of the sixth lens to the object side of the filter.

[0184]

[0185] Table 12

[0186] Figure 8A The distortion curve of the optical imaging lens of Example 4 in telephoto mode is shown, which represents the distortion values ​​corresponding to different field angles. Figure 8B The chromatic aberration curve of the optical imaging lens of Example 4 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the optical imaging lens.

[0187] Figure 8C The distortion curve of the optical imaging lens of Example 4 in close-up shooting mode is shown, which represents the distortion magnitude values ​​corresponding to different field angles. Figure 8D The chromatic aberration curve of the optical imaging lens of Example 4 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the optical imaging lens.

[0188] according to Figures 8A to 8D It can be seen that the optical imaging lens provided in Example 4 can achieve good imaging quality in both long-range shooting and close-range shooting modes.

[0189] Example 5

[0190] The following reference 9A to 10D The optical imaging lens according to Example 5 of the present application is described. Figure 9A and Figure 9B Schematic diagrams of the structure of the optical imaging lens in a first state and a second state according to Example 5 of the present application are respectively shown.

[0191] like Figure 9A and Figure 9B As shown, the optical imaging lens comprises, from the object side to the image side, a first lens group, a prism P, a second lens group, and a third lens group. The first lens group includes a first lens E1, the second lens group includes a second lens E2, an aperture STO, a third lens E3, and a fourth lens E4, and the third lens group includes a fifth lens E5 and a sixth lens E6.

[0192] In this embodiment, 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 S5 being convex and its image-side surface S6 being convex. The third lens E3 has negative optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fourth lens E4 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The fifth lens E5 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being convex. The sixth lens E6 has negative optical power, with its object-side surface S13 being concave and its image-side surface S14 being convex. The optical imaging lens may further include a filter E7 disposed between the sixth lens E6 and the imaging surface S17. The filter E7 has an object-side surface S15 and an image-side surface S16. Light from an object sequentially passes through each of the surfaces S1 to S16 and is ultimately imaged on the imaging surface S17.

[0193] Table 13 shows the basic parameters of the optical imaging lens of Example 5, where the units of curvature radius and thickness / distance are all millimeters (mm).

[0194]

[0195] Table 13

[0196] In Example 5, the object side surface and the image side surface of any lens from the first lens E1 to the sixth lens E6 are both aspherical surfaces, and the surface shape of each aspherical lens is The aspheric surface formula (1) in Example 1 can be used for definition.

[0197] Tables 14-1 and 14-2 below give the high-order coefficients of the aspherical mirror surfaces that can be used in Example 5. A 4 、 A 6 、 A 8 、 A 10 、 A 12 、 A 14 、 A 16 、 A 18 、 A 20 、 A 22 、 A 24 、 A 26 、 A 28 and A 30 。

[0198]

[0199] Table 14-1

[0200]

[0201] Table 14-2

[0202] Table 15 below shows parameter settings for an optical imaging lens in its first and second states, respectively, according to an example of Example 5 of the present application. The first state is suitable for telephoto mode, and the second state is suitable for close-up mode. D1 is the distance on the optical axis from the image side of the first lens to the object side of the prism; D2 is the distance on the optical axis from the image side of the fourth lens to the object side of the fifth lens; and D3 is the distance on the optical axis from the image side of the sixth lens to the object side of the filter.

[0203]

[0204] Table 15

[0205] Figure 10A The distortion curve of the optical imaging lens of Example 5 in telephoto mode is shown, which represents the distortion values ​​corresponding to different field angles. Figure 10B The chromatic aberration curve of the optical imaging lens of Example 5 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the optical imaging lens.

[0206] Figure 10C The distortion curve of the optical imaging lens of Example 5 in close-up shooting mode is shown, which represents the distortion magnitude values ​​corresponding to different field angles. Figure 10D The chromatic aberration curve of the optical imaging lens of Example 5 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the optical imaging lens.

[0207] according to 10A to 10D It can be seen that the optical imaging lens provided in Example 5 can achieve good imaging quality in both long-range shooting and close-range shooting modes.

[0208] Example 6

[0209] The following reference 11A to 12D The optical imaging lens according to Example 6 of the present application is described. Figure 11A and Figure 11B Schematic diagrams of the structure of the optical imaging lens in a first state and a second state according to Example 6 of the present application are respectively shown.

[0210] like Figure 11A and Figure 11BAs shown, the optical imaging lens comprises, from the object side to the image side, a first lens group, a prism P, a second lens group, and a third lens group. The first lens group includes a first lens E1, the second lens group includes a second lens E2, an aperture STO, a third lens E3, and a fourth lens E4, and the third lens group includes a fifth lens E5 and a sixth lens E6.

[0211] In this embodiment, 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 S5 being convex and its image-side surface S6 being convex. The third lens E3 has negative optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fourth lens E4 has positive optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The fifth lens E5 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being convex. The sixth lens E6 has negative optical power, with its object-side surface S13 being concave and its image-side surface S14 being convex. The optical imaging lens may further include a filter E7 disposed between the sixth lens E6 and the imaging surface S17. The filter E7 has an object-side surface S15 and an image-side surface S16. Light from an object sequentially passes through each of the surfaces S1 to S16 and is ultimately imaged on the imaging surface S17.

[0212] Table 16 shows the basic parameters of the optical imaging lens of Example 6, where the units of curvature radius and thickness / distance are all millimeters (mm).

[0213]

[0214] Table 16

[0215] In Example 6, the object side surface and the image side surface of any lens from the first lens E1 to the sixth lens E6 are both aspherical surfaces, and the surface shape of each aspherical lens is The aspheric surface formula (1) in Example 1 can be used for definition.

[0216] Tables 17-1 and 17-2 below give the high-order coefficients of the aspherical mirror surfaces that can be used in Example 6. A 4 、 A 6 、 A 8 、 A 10 、 A 12 、 A 14 、 A 16 、 A 18 、 A 20 、A 22 、 A 24 、 A 26 、 A 28 and A 30 。

[0217]

[0218] Table 17-1

[0219]

[0220] Table 17-2

[0221] Table 18 below shows parameter settings for an optical imaging lens in its first and second states, respectively, according to an example of Example 6 of the present application. The first state is suitable for telephoto mode, and the second state is suitable for close-up mode. D1 is the distance on the optical axis from the image side of the first lens to the object side of the prism; D2 is the distance on the optical axis from the image side of the fourth lens to the object side of the fifth lens; and D3 is the distance on the optical axis from the image side of the sixth lens to the object side of the filter.

[0222]

[0223] Table 18

[0224] Figure 12A The distortion curve of the optical imaging lens of Example 6 in telephoto mode is shown, which represents the distortion values ​​corresponding to different field angles. Figure 12B The chromatic aberration curve of the optical imaging lens of Example 6 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the optical imaging lens.

[0225] Figure 12C The distortion curve of the optical imaging lens of Example 6 in the close-up shooting mode is shown, which represents the distortion magnitude values ​​corresponding to different field angles. Figure 12D The chromatic aberration curve of the optical imaging lens of Example 6 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the optical imaging lens.

[0226] according to 12A to 12D It can be seen that the optical imaging lens provided in Example 6 can achieve good imaging quality in both long-range shooting and close-range shooting modes.

[0227] Example 7

[0228] The following reference 13A to 14D An optical imaging lens according to Example 7 of the present application is described. Figure 13A and Figure 13B Schematic diagrams of the structures of the optical imaging lens in a first state and a second state according to Example 7 of the present application are respectively shown.

[0229] like Figure 13A and Figure 13B As shown, the optical imaging lens comprises, from the object side to the image side, a first lens group, a prism P, a second lens group, and a third lens group. The first lens group includes a first lens E1, the second lens group includes a second lens E2, an aperture STO, a third lens E3, and a fourth lens E4, and the third lens group includes a fifth lens E5 and a sixth lens E6.

[0230] In this embodiment, 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 S5 being convex and its image-side surface S6 being convex. The third lens E3 has negative optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fourth lens E4 has positive optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The fifth lens E5 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being convex. The sixth lens E6 has positive optical power, with its object-side surface S13 being concave and its image-side surface S14 being convex. The optical imaging lens may further include a filter E7 disposed between the sixth lens E6 and the imaging surface S17. The filter E7 has an object-side surface S15 and an image-side surface S16. Light from an object sequentially passes through each of the surfaces S1 to S16 and is ultimately imaged on the imaging surface S17.

[0231] Table 19 shows the basic parameters of the optical imaging lens of Example 7, where the units of curvature radius and thickness / distance are all millimeters (mm).

[0232]

[0233] Table 19

[0234] In Example 7, the object side surface and the image side surface of any lens from the first lens E1 to the sixth lens E6 are both aspherical surfaces, and the surface shape of each aspherical lens is The aspheric surface formula (1) in Example 1 can be used for definition.

[0235] Tables 20-1 and 20-2 below give the high-order coefficients of the aspherical mirror surfaces that can be used in Example 7. A 4 、 A 6 、 A 8 、 A10 、 A 12 、 A 14 、 A 16 、 A 18 、 A 20 、 A 22 、 A 24 、 A 26 、 A 28 and A 30 。

[0236]

[0237] Table 20-1

[0238]

[0239] Table 20-2

[0240] Table 21 below shows parameter settings for an optical imaging lens in its first and second states, respectively, according to an example of Example 7 of the present application. The first state is suitable for telephoto mode, and the second state is suitable for close-up mode. D1 is the distance on the optical axis from the image side of the first lens to the object side of the prism; D2 is the distance on the optical axis from the image side of the fourth lens to the object side of the fifth lens; and D3 is the distance on the optical axis from the image side of the sixth lens to the object side of the filter.

[0241]

[0242] Table 21

[0243] Figure 14A The distortion curve of the optical imaging lens of Example 7 in telephoto mode is shown, which represents the distortion values ​​corresponding to different field angles. Figure 14B The chromatic aberration curve of the optical imaging lens of Example 7 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the optical imaging lens.

[0244] Figure 14C The distortion curve of the optical imaging lens of Example 7 in close-up shooting mode is shown, which represents the distortion magnitude values ​​corresponding to different field angles. Figure 14D The chromatic aberration curve of the optical imaging lens of Example 7 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the optical imaging lens.

[0245] according to 14A to 14D It can be seen that the optical imaging lens provided in Example 7 can achieve good imaging quality in both long-range shooting and close-range shooting modes.

[0246] Example 8

[0247] The following reference 15A to 16D The optical imaging lens according to Example 8 of the present application is described. Figure 15A and Figure 15B Schematic diagrams of the structures of the optical imaging lens in a first state and a second state according to Example 8 of the present application are respectively shown.

[0248] like Figure 15A and Figure 15B As shown, the optical imaging lens comprises, from the object side to the image side, a first lens group, a prism P, a second lens group, and a third lens group. The first lens group includes a first lens E1, the second lens group includes a second lens E2, an aperture STO, a third lens E3, and a fourth lens E4, and the third lens group includes a fifth lens E5 and a sixth lens E6.

[0249] In this embodiment, 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 S5 being convex and its image-side surface S6 being convex. The third lens E3 has negative optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fourth lens E4 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The fifth lens E5 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being convex. The sixth lens E6 has negative optical power, with its object-side surface S13 being concave and its image-side surface S14 being convex. The optical imaging lens may further include a filter E7 disposed between the sixth lens E6 and the imaging surface S17. The filter E7 has an object-side surface S15 and an image-side surface S16. Light from an object sequentially passes through each of the surfaces S1 to S16 and is ultimately imaged on the imaging surface S17.

[0250] Table 22 shows the basic parameters of the optical imaging lens of Example 8, where the units of curvature radius and thickness / distance are all millimeters (mm).

[0251]

[0252] Table 22

[0253] In Example 8, the object side surface and the image side surface of any lens from the first lens E1 to the sixth lens E6 are both aspherical surfaces, and the surface shape of each aspherical lens is The aspheric surface formula (1) in Example 1 can be used for definition.

[0254] Tables 23-1 and 23-2 below give the high-order coefficients of the aspherical mirror surfaces that can be used in Example 8. A 4 、 A 6 、 A 8 、 A 10 、 A 12 、 A 14 、 A 16 、 A 18 、 A 20 、 A 22 、 A 24 、 A 26 、 A 28 and A 30 。

[0255]

[0256] Table 23-1

[0257]

[0258] Table 23-2

[0259] Table 24 below shows parameter settings for an optical imaging lens in its first and second states, respectively, according to an example of Example 8 of the present application. The first state is suitable for telephoto mode, and the second state is suitable for close-up mode. D1 is the distance on the optical axis from the image side of the first lens to the object side of the prism; D2 is the distance on the optical axis from the image side of the fourth lens to the object side of the fifth lens; and D3 is the distance on the optical axis from the image side of the sixth lens to the object side of the filter.

[0260]

[0261] Table 24

[0262] Figure 16A The distortion curve of the optical imaging lens of Example 8 in telephoto mode is shown, which represents the distortion magnitude values ​​corresponding to different field angles. Figure 16B The chromatic aberration curve of the optical imaging lens of Example 8 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the optical imaging lens.

[0263] Figure 16C The distortion curve of the optical imaging lens of Example 8 in close-up shooting mode is shown, which indicates the distortion magnitude values ​​corresponding to different field angles. Figure 16D The chromatic aberration curve of the optical imaging lens of Example 8 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the optical imaging lens.

[0264] according to 16A to 16D It can be seen that the optical imaging lens provided in Example 8 can achieve good imaging quality in both long-range shooting and close-range shooting modes.

[0265] Example 9

[0266] The following reference 17A to 18D The optical imaging lens according to Example 9 of the present application is described. Figure 17A and Figure 17B Schematic diagrams of the structures of the optical imaging lens in a first state and a second state according to Example 9 of the present application are respectively shown.

[0267] like Figure 17A and Figure 17B As shown, the optical imaging lens comprises, from the object side to the image side, a first lens group, a prism P, a second lens group, and a third lens group. The first lens group includes a first lens E1, the second lens group includes a second lens E2, an aperture STO, a third lens E3, and a fourth lens E4, and the third lens group includes a fifth lens E5 and a sixth lens E6.

[0268] In this embodiment, 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 S5 being convex and its image-side surface S6 being convex. The third lens E3 has negative optical power, with its object-side surface S7 being concave and its image-side surface S8 being concave. The fourth lens E4 has positive optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The fifth lens E5 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being convex. The sixth lens E6 has positive optical power, with its object-side surface S13 being concave and its image-side surface S14 being convex. The optical imaging lens may further include a filter E7 disposed between the sixth lens E6 and the imaging surface S17. The filter E7 has an object-side surface S15 and an image-side surface S16. Light from an object sequentially passes through each of the surfaces S1 to S16 and is ultimately imaged on the imaging surface S17.

[0269] Table 25 shows the basic parameters of the optical imaging lens of Example 9, where the units of curvature radius and thickness / distance are all millimeters (mm).

[0270]

[0271] Table 25

[0272] In Example 9, the object side surface and the image side surface of any lens from the first lens E1 to the sixth lens E6 are both aspherical surfaces, and the surface shape of each aspherical lens is The aspheric surface formula (1) in Example 1 can be used for definition.

[0273] Tables 26-1 and 26-2 below give the high-order coefficients of the aspherical mirror surfaces that can be used in Example 9. A 4 、 A 6 、 A 8 、 A 10 、 A 12 、 A 14 、 A 16 、 A 18 、 A 20 、 A 22 、 A 24 、 A 26 、 A 28 and A 30 。

[0274]

[0275] Table 26-1

[0276]

[0277] Table 26-2

[0278] Table 27 below shows parameter settings for an optical imaging lens in its first and second states, respectively, according to an example of Example 9 of the present application. The first state is suitable for telephoto mode, and the second state is suitable for close-up mode. D1 is the distance on the optical axis from the image side of the first lens to the object side of the prism; D2 is the distance on the optical axis from the image side of the fourth lens to the object side of the fifth lens; and D3 is the distance on the optical axis from the image side of the sixth lens to the object side of the filter.

[0279]

[0280] Table 27

[0281] Figure 18A The distortion curve of the optical imaging lens of Example 9 in telephoto mode is shown, which represents the distortion magnitude values ​​corresponding to different field angles. Figure 4B The chromatic aberration curve of the optical imaging lens of Example 9 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the optical imaging lens.

[0282] Figure 18C The distortion curve of the optical imaging lens of Example 9 in close-up shooting mode is shown, which represents the distortion magnitude values ​​corresponding to different field angles. Figure 18D The chromatic aberration curve of the optical imaging lens of Example 9 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the optical imaging lens.

[0283] according to 18A to 18D It can be seen that the optical imaging lens provided in Example 9 can achieve good imaging quality in both long-range shooting and close-range shooting modes.

[0284] Table 28 below shows some optical parameters of the optical imaging lenses of Examples 1 to 9.

[0285]

[0286] Table 28

[0287] In summary, in Examples 1 to 9, the optical imaging lens system satisfies the conditional formula in Table 29 below.

[0288]

[0289] Table 29

[0290] 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 technical solutions formed by a specific combination of the aforementioned technical features. It also encompasses other technical solutions formed by any combination of the aforementioned technical features or their equivalents, without departing from the inventive concept. For example, a technical solution formed by replacing the aforementioned features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. An optical imaging lens, characterized in that: Along the optical axis from the object side to the image side, they include: The first lens group includes a first lens having positive optical power, a convex object-side surface and a concave image-side surface; a prism; a second lens group comprising a second lens having positive refractive power, a third lens having optical refractive power, and a fourth lens having optical refractive power, wherein the object-side surface of the second lens is convex and the image-side surface is convex; and the image-side surface of the fourth lens is concave; a third lens group having positive refractive power, comprising a fifth lens having positive refractive power and a sixth lens having refractive power, wherein the object-side surface of the fifth lens is convex; the object-side surface of the sixth lens is concave, and the image-side surface is convex; The optical imaging lens has six lenses with optical power. The optical power of at least one of the third lens and the fourth lens is negative; Focusing is performed by moving the second lens group and the third lens group in the optical imaging lens, so that the optical imaging lens switches between a first state and a second state; In the second state, a distance TTLb from the object-side surface of the first lens to the imaging plane on the optical axis, an effective focal length fb of the optical imaging lens in the second state, and half of the maximum field of view (Semi-FOVb) of the optical imaging lens in the second state satisfy the following relationship: 8.28≤TTLb / fb / tan(Semi-FOVb)≤8.71; In the first state, the effective focal length fa of the optical imaging lens and the effective focal length f2 of the second lens satisfy the following: 2.31≤fa / f2≤5.44; The distance TG2 of the second lens group on the optical axis and the center thickness PT of the prism satisfy the following: 0.69≤TG2 / PT≤1.01; and A center thickness CT5 of the fifth lens, a center thickness CT6 of the sixth lens, and an air interval T56 between the fifth lens and the sixth lens on the optical axis satisfy the following: 0.61≤(CT5+CT6) / T56≤6.

44.

2. The optical imaging lens according to claim 1, wherein: In the first state, the distance TTLa from the object side surface of the first lens to the imaging surface on the optical axis, the effective focal length fa of the optical imaging lens in the first state, and the aperture number FNOa of the optical imaging lens in the first state satisfy: 4.39≤TTLa / fa FNOa<4.

5.

3. The optical imaging lens according to claim 1, wherein: An effective focal length f2 of the second lens, a curvature radius R3 of the object-side surface of the second lens, and a curvature radius R4 of the image-side surface of the second lens satisfy: 0.76≤|f2 / (R3+R4)|≤23.

73.

4. The optical imaging lens according to claim 1, wherein: An effective semi-aperture DT11 of the object-side surface of the first lens and an effective semi-aperture DT41 of the object-side surface of the fourth lens satisfy the following conditions: 1.9≤DT11 / DT41≤2.

17.

5. The optical imaging lens according to claim 1, wherein: A center thickness CT4 of the fourth lens, a center thickness CT5 of the fifth lens, and an air interval T45 between the fourth lens and the fifth lens on the optical axis satisfy the following: 0.48≤(CT4+CT5) / T45<2.

6.

6. The optical imaging lens according to claim 1, wherein: An effective semi-aperture DT42 of the image-side surface of the fourth lens and an effective semi-aperture DT62 of the image-side surface of the sixth lens satisfy the following: 0.68≤DT42 / DT62≤0.

73.

7. The optical imaging lens according to claim 1, wherein: An effective focal length fa of the optical imaging lens in the first state, an effective focal length fb of the optical imaging lens in the second state, and a combined focal length f56 of the fifth lens and the sixth lens satisfy the following conditions: 0.91≤fa / f56<1.5; 0.85≤fb / f56≤1.

32.

8. The optical imaging lens according to claim 1, wherein: The effective focal length f1 of the first lens and the combined focal length f56 of the fifth lens and the sixth lens satisfy the following: 2.26≤f1 / f56≤3.

31.

9. The optical imaging lens according to claim 1, wherein: A distance TG2 of the second lens group on the optical axis, a center thickness CT2 of the second lens, a center thickness CT3 of the third lens, and a center thickness CT4 of the fourth lens satisfy the following: 1.23≤TG2 / (CT2+CT3+CT4)≤2.

16.

10. The optical imaging lens according to claim 1, wherein: The center thickness CT2 of the second lens, the center thickness CT3 of the third lens, and the center thickness CT4 of the fourth lens satisfy the following: 3.11≤(CT2+CT4) / CT3≤4.92; 2.19≤CT2 / CT3≤2.

7.

11. The optical imaging lens according to claim 1, wherein: A center thickness CT6 of the sixth lens and a distance TG3 of the third lens group on the optical axis satisfy the following: 0.14≤CT6 / TG3<0.

6.

12. The optical imaging lens according to claim 1, wherein: The center thickness CT1 of the first lens, the edge thickness at the maximum effective semi-aperture of the first lens, and the refractive index N1 of the first lens satisfy: 2.2≤CT1 / ET1 N1≤3.

02.

13. The optical imaging lens according to claim 1, wherein: A curvature radius R12 of the image-side surface of the sixth lens, a center thickness CT6 of the sixth lens, and a refractive index N6 of the sixth lens satisfy the following: -8.56≤R12 / CT6 / N6≤-1.

84.

14. The optical imaging lens according to claim 1, wherein: The effective semi-aperture DT21 of the object-side surface of the second lens, the effective semi-aperture DT22 of the image-side surface of the second lens, the effective semi-aperture DT41 of the object-side surface of the fourth lens, and the effective semi-aperture DT42 of the image-side surface of the fourth lens satisfy the following: 1.32≤(DT21+DT22) / (DT41+DT42)≤1.

41.

15. The optical imaging lens according to claim 1, wherein: In the first state, a distance TD1 from the object side surface of the first lens to the image side surface of the sixth lens on the optical axis and a distance TG2 of the second lens group on the optical axis satisfy the following: 3.87≤TD1 / TG2≤5.

67.

16. The optical imaging lens according to claim 1, wherein: The first variable gap variable ΔD1 of the optical imaging lens and the second variable gap variable ΔD2 of the optical imaging lens satisfy the following: 0.34≤ΔD1 / ΔD2<2.

8.

17. The optical imaging lens according to claim 1, wherein: The effective focal length fa of the optical imaging lens in the first state, the effective focal length fb of the optical imaging lens in the second state, the first variable gap variable ΔD1 of the optical imaging lens, and the second variable gap variable ΔD2 of the optical imaging lens satisfy the following: 0.3≤(fa-fb) / (ΔD1+ΔD2)≤0.

49.

18. The optical imaging lens according to claim 1, wherein: The first variable gap variable ΔD1 of the optical imaging lens satisfies: 1.0<ΔD1≤3.

19. An optical imaging lens, characterized in that: Along the optical axis from the object side to the image side, they include: The first lens group includes a first lens having positive optical power, a convex object-side surface and a concave image-side surface; a prism; a second lens group comprising a second lens having positive refractive power, a third lens having optical refractive power, and a fourth lens having optical refractive power, wherein the object-side surface of the second lens is convex and the image-side surface is convex; and the image-side surface of the fourth lens is concave; a third lens group having positive refractive power, comprising a fifth lens having positive refractive power and a sixth lens having refractive power, wherein the object-side surface of the fifth lens is convex, the object-side surface of the sixth lens is concave, and the image-side surface is convex; The optical imaging lens comprises six lenses having optical power; and the optical power of at least one of the third lens and the fourth lens is negative. Focusing is performed by moving the second lens group and the third lens group in the optical imaging lens, so that the optical imaging lens switches between a first state and a second state; In the second state, a distance TTLb from the object-side surface of the first lens to the imaging plane on the optical axis, an effective focal length fb of the optical imaging lens in the second state, and half of the maximum field of view (Semi-FOVb) of the optical imaging lens in the second state satisfy the following relationship: 8.28≤TTLb / fb / tan(Semi-FOVb)≤8.71; The center thickness CT5 of the fifth lens, the center thickness CT6 of the sixth lens, and the air interval T56 between the fifth lens and the sixth lens on the optical axis satisfy the following conditions: 0.61≤(CT5+CT6) / T56≤6.44; a distance TG2 of the second lens group on the optical axis, a center thickness CT2 of the second lens, a center thickness CT3 of the third lens, and a center thickness CT4 of the fourth lens satisfy the following: 1.23≤TG2 / (CT2+CT3+CT4)≤2.16; and The first variable gap variable ΔD1 of the optical imaging lens satisfies: 1.0<ΔD1≤3.

20. The optical imaging lens according to claim 19, wherein: In the first state, the distance TTLa from the object side surface of the first lens to the imaging surface on the optical axis, the effective focal length fa of the optical imaging lens in the first state, and the aperture number FNOa of the optical imaging lens in the first state satisfy: 4.39≤TTLa / fa FNOa<4.

5.

21. The optical imaging lens according to claim 19, wherein: An effective focal length f2 of the second lens, a curvature radius R3 of the object-side surface of the second lens, and a curvature radius R4 of the image-side surface of the second lens satisfy: 0.76≤|f2 / (R3+R4)|≤23.

73.

22. The optical imaging lens according to claim 19, wherein: An effective semi-aperture DT11 of the object-side surface of the first lens and an effective semi-aperture DT41 of the object-side surface of the fourth lens satisfy the following conditions: 1.9≤DT11 / DT41≤2.

17.

23. The optical imaging lens according to claim 19, wherein: A center thickness CT4 of the fourth lens, a center thickness CT5 of the fifth lens, and an air interval T45 between the fourth lens and the fifth lens on the optical axis satisfy the following: 0.48≤(CT4+CT5) / T45<2.

6.

24. The optical imaging lens according to claim 19, wherein: An effective semi-aperture DT42 of the image-side surface of the fourth lens and an effective semi-aperture DT62 of the image-side surface of the sixth lens satisfy the following: 0.68≤DT42 / DT62≤0.

73.

25. The optical imaging lens according to claim 19, wherein: An effective focal length fa of the optical imaging lens in the first state, an effective focal length fb of the optical imaging lens in the second state, and a combined focal length f56 of the fifth lens and the sixth lens satisfy the following conditions: 0.91≤fa / f56<1.5; 0.85≤fb / f56≤1.

32.

26. The optical imaging lens according to claim 19, wherein: The effective focal length f1 of the first lens and the combined focal length f56 of the fifth lens and the sixth lens satisfy the following: 2.26≤f1 / f56≤3.

31.

27. The optical imaging lens according to claim 19, wherein: In the first state, the effective focal length fa of the optical imaging lens and the effective focal length f2 of the second lens satisfy the following: 2.31≤fa / f2≤5.

44.

28. The optical imaging lens according to claim 19, wherein: A distance TG2 between the second lens group on the optical axis and a center thickness PT of the prism satisfy the following: 0.69≤TG2 / PT≤1.

01.

29. The optical imaging lens according to claim 19, wherein: The center thickness CT2 of the second lens, the center thickness CT3 of the third lens, and the center thickness CT4 of the fourth lens satisfy the following: 3.11≤(CT2+CT4) / CT3≤4.92; 2.19≤CT2 / CT3≤2.

7.

30. The optical imaging lens according to claim 19, wherein: A center thickness CT6 of the sixth lens and a distance TG3 of the third lens group on the optical axis satisfy the following: 0.14≤CT6 / TG3<0.

6.

31. The optical imaging lens according to claim 19, wherein: The center thickness CT1 of the first lens, the edge thickness at the maximum effective semi-aperture of the first lens, and the refractive index N1 of the first lens satisfy: 2.2≤CT1 / ET1 N1≤3.

02.

32. The optical imaging lens according to claim 19, wherein: A curvature radius R12 of the image-side surface of the sixth lens, a center thickness CT6 of the sixth lens, and a refractive index N6 of the sixth lens satisfy the following: -8.56≤R12 / CT6 / N6≤-1.

84.

33. The optical imaging lens according to claim 19, wherein: The effective semi-aperture DT21 of the object-side surface of the second lens, the effective semi-aperture DT22 of the image-side surface of the second lens, the effective semi-aperture DT41 of the object-side surface of the fourth lens, and the effective semi-aperture DT42 of the image-side surface of the fourth lens satisfy the following: 1.32≤(DT21+DT22) / (DT41+DT42)≤1.

41.

34. The optical imaging lens according to claim 19, wherein: In the first state, a distance TD1 from the object side surface of the first lens to the image side surface of the sixth lens on the optical axis and a distance TG2 of the second lens group on the optical axis satisfy the following: 3.87≤TD1 / TG2≤5.

67.

35. The optical imaging lens according to claim 19, wherein: The first variable gap variable ΔD1 of the optical imaging lens and the second variable gap variable ΔD2 of the optical imaging lens satisfy the following: 0.34≤ΔD1 / ΔD2<2.

8.

36. The optical imaging lens according to claim 19, wherein: The effective focal length fa of the optical imaging lens in the first state, the effective focal length fb of the optical imaging lens in the second state, the first variable gap variable ΔD1 of the optical imaging lens, and the second variable gap variable ΔD2 of the optical imaging lens satisfy the following: 0.3≤(fa-fb) / (ΔD1+ΔD2)≤0.49.

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