Optical imaging lens

Abstract

The utility model discloses an optical imaging lens, which comprises a lens barrel, and a lens group and a spacing element group which are accommodated in the lens barrel, and is characterized in that the lens group comprises first to seventh lenses which are sequentially arranged from an object side to an image side along an optical axis; the spacing element group comprises a second spacing element which is positioned between the second and third lenses and is in direct contact with the image side surface of the second lens, and a third spacing element which is positioned between the third and fourth lenses and is in direct contact with the image side surface of the third lens; the air interval T34 between the third lens and the fourth lens on the optical axis, the maximum thickness CP3 of the third interval element, the air interval T23 between the second lens and the third lens on the optical axis, and the maximum thickness CP2 of the second interval element satisfy the following conditions: 2.0 < (T34 + CP3) / (T23 + CP2) < 2.6; the Abbe number V3 of the third lens, the outer diameter D3s of the object side surface of the third spacing element, the Abbe number V2 of the second lens and the outer diameter D2s of the object side surface of the second spacing element satisfy the following formula: 4.0 < (V3 * D3s) / (V2 * D2s) < 4.6.

Description

Technical Field

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

[0002] At present, as the market's requirements for the camera performance of portable electronic devices such as mobile phones are getting higher and higher, various mobile phone manufacturers have increased their demand for seven-element lenses in response to changes in market demand, and have put forward higher requirements for the imaging quality of the lenses. However, the current seven-element lenses still have problems such as poor assembly stability, more stray light and astigmatism, and low yield in mass production. Among them, the second lens, the third lens, and the fourth lens in the system are particularly sensitive, which can easily lead to poor structural stability after assembly, low yield, and failure to meet product requirements. This problem is more prominent and needs to be solved urgently. Utility Model Content

[0003] The present application provides an optical imaging lens, which may include a lens barrel and a lens group and a spacer element group contained in the lens barrel, wherein the lens group includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens arranged in sequence from the object side to the image side along the optical axis; the spacer element group includes: a second spacer element located between the second lens and the third lens and in direct contact with the image side surface of the second lens, and a third spacer element located between the third lens and the fourth lens and in direct contact with the image side surface of the third lens; and the optical imaging lens may satisfy: 2.0 <(T34+CP3) / (T23+CP2)<2.6 and 4.0<(V3×D3s) / (V2×D2s)<4.6, wherein T34 is the air gap between the third lens and the fourth lens on the optical axis, CP3 is the maximum thickness of the third spacing element, T23 is the air gap between the second lens and the third lens on the optical axis, CP2 is the maximum thickness of the second spacing element, V3 is the Abbe number of the third lens, D3s is the outer diameter of the object side surface of the third spacing element, V2 is the Abbe number of the second lens, and D2s is the outer diameter of the object side surface of the second spacing element.

[0004] In one embodiment, the spacer element group also includes: a first spacer element, located between the first lens and the second lens and in direct contact with the image side surface of the first lens; the distance EP01 from the object side end surface of the lens barrel to the object side surface of the first spacer element on the optical axis, the center thickness CT1 of the first lens on the optical axis, the Abbe number V1 of the first lens and the effective focal length f1 of the first lens can satisfy: 0.7<(EP01-CT1)×V1 / f1<2.1.

[0005] In one embodiment, the spacer element group also includes: a first spacer element, located between the first lens and the second lens and in direct contact with the image side surface of the first lens; the curvature radius R2 of the image side surface of the first lens, the curvature radius R1 of the object side surface of the first lens, the refractive index N1 of the first lens and the inner diameter d1s of the object side surface of the first spacer element may satisfy: 1.5<(R2-R1)×N1 / d1s<2.0.

[0006] In one embodiment, the spacer element group also includes: a first spacer element, located between the first lens and the second lens and in direct contact with the image side surface of the first lens; the effective focal length f2 of the second lens, the effective focal length f1 of the first lens, the outer diameter D1s of the object side surface of the first spacer element and the outer diameter D2s of the object side surface of the second spacer element may satisfy: 1.5<|f2 / f1| / (D1s / D2s)<3.0.

[0007] In one embodiment, the spacer element group also includes: a first spacer element, located between the first lens and the second lens and in direct contact with the image side surface of the first lens; the air gap T12 between the first lens and the second lens on the optical axis, the center thickness CT2 of the second lens on the optical axis, the air gap T23 between the second lens and the third lens on the optical axis, and the distance EP12 from the image side surface of the first spacer element to the object side surface of the second spacer element on the optical axis may satisfy: 1.0<(T12+CT2+T23) / EP12<1.6.

[0008] In one embodiment, the combined focal length f12 of the first lens and the second lens, the outer diameter D2m of the image side surface of the second spacer element, and the inner diameter d2m of the image side surface of the second spacer element may satisfy: 4.4<f12 / (D2m-d2m)<10.2.

[0009] In one embodiment, the spacer element group also includes: a first spacer element, located between the first lens and the second lens and in direct contact with the image side surface of the first lens; the curvature radius R3 of the object side surface of the second lens, the inner diameter d1m of the image side surface of the first spacer element, the curvature radius R4 of the image side surface of the second lens and the inner diameter d2s of the object side surface of the second spacer element may satisfy: 1.6<(R3×d1m) / (R4×d2s)<2.0.

[0010] In one embodiment, the spacer element group also includes: a first spacer element, located between the first lens and the second lens and in direct contact with the image side surface of the first lens; the distance EP12 from the image side surface of the first spacer element to the object side surface of the second spacer element on the optical axis, the distance EP23 from the image side surface of the second spacer element to the object side surface of the third spacer element on the optical axis, and the center thickness CT3 of the third lens on the optical axis may satisfy: 1.3<(EP12+EP23) / CT3<1.6.

[0011] In one embodiment, a curvature radius R5 of the object-side surface of the third lens and an inner diameter d3s of the object-side surface of the third spacing element may satisfy: 2.3<R5 / d3s<3.2.

[0012] In one embodiment, the spacer element group also includes: a fourth spacer element, located between the fourth lens and the fifth lens and in direct contact with the image side surface of the fourth lens; the center thickness CT3 of the third lens on the optical axis, the center thickness CT4 of the fourth lens on the optical axis, the center thickness CT5 of the fifth lens on the optical axis and the maximum thickness CP4 of the fourth spacer element may satisfy: 0.5<CT3 / (CT4+CT5+CP4)<1.1.

[0013] In one embodiment, the spacer element group also includes: a fourth spacer element, located between the fourth lens and the fifth lens and in direct contact with the image side surface of the fourth lens; and a fifth spacer element, located between the fifth lens and the sixth lens and in direct contact with the image side surface of the fifth lens; the air gap T45 between the fourth lens and the fifth lens on the optical axis, the air gap T56 between the fifth lens and the sixth lens on the optical axis, and the distance EP45 from the image side surface of the fourth spacer element to the object side surface of the fifth spacer element on the optical axis may satisfy: 1.7<(T45+T56) / EP45<2.9.

[0014] In one embodiment, the spacer element group also includes: a fourth spacer element, located between the fourth lens and the fifth lens and in direct contact with the image side surface of the fourth lens; and a fifth spacer element, located between the fifth lens and the sixth lens and in direct contact with the image side surface of the fifth lens; the effective focal length f4 of the fourth lens, the inner diameter d4s of the object side surface of the fourth spacer element, the effective focal length f5 of the fifth lens and the inner diameter d5s of the object side surface of the fifth spacer element may satisfy: -25.0<f4 / d4s+f5 / d5s<-12.0.

[0015] In one embodiment, the spacer element group also includes: a fourth spacer element, located between the fourth lens and the fifth lens and in direct contact with the image side surface of the fourth lens; and a fifth spacer element, located between the fifth lens and the sixth lens and in direct contact with the image side surface of the fifth lens; the combined focal length f45 of the fourth lens and the fifth lens, the outer diameter D4m of the image side surface of the fourth spacer element and the outer diameter D5m of the image side surface of the fifth spacer element may satisfy: -1.6<f45 / (D4m+D5m)<-0.8.

[0016] In one embodiment, the spacer element group also includes: a fifth spacer element, which is located between the fifth lens and the sixth lens and is in direct contact with the image side surface of the fifth lens; the curvature radius R9 of the object side surface of the fifth lens, the curvature radius R10 of the image side surface of the fifth lens, the inner diameter d5s of the object side surface of the fifth spacer element, and the outer diameter D5s of the object side surface of the fifth spacer element may satisfy: 0.9<(R9 / R10)×d5s / D5s<2.7.

[0017] In one embodiment, the spacer element group also includes: a sixth spacer element, located between the sixth lens and the seventh lens and in direct contact with the image side surface of the sixth lens; the air gap T67 between the sixth lens and the seventh lens on the optical axis, the center thickness CT7 of the seventh lens on the optical axis and the maximum thickness CP6 of the sixth spacer element may satisfy: 2.4<(T67+CT7) / CP6<3.4.

[0018] In one embodiment, the spacer element group also includes: a sixth spacer element, which is located between the sixth lens and the seventh lens and is in direct contact with the image side surface of the sixth lens; the curvature radius R11 of the object side surface of the sixth lens, the outer diameter D6s of the object side surface of the sixth spacer element, and the inner diameter d6s of the object side surface of the sixth spacer element may satisfy: 1.4<R11 / (D6s-d6s)<3.3.

[0019] In one embodiment, the spacer element group also includes: a sixth spacer element, which is located between the sixth lens and the seventh lens and is in direct contact with the image side surface of the sixth lens; the outer diameter D6m of the image side surface of the sixth spacer element, the inner diameter d6m of the image side surface of the sixth spacer element and the curvature radius R13 of the object side surface of the seventh lens can satisfy: -0.6<(D6m-d6m) / R13<0.

[0020] In one embodiment, the spacer element group also includes: a fifth spacer element, located between the fifth lens and the sixth lens and in direct contact with the image side surface of the fifth lens; and a sixth spacer element, located between the sixth lens and the seventh lens and in direct contact with the image side surface of the sixth lens; the Abbe number V6 of the sixth lens, the Abbe number V5 of the fifth lens, the distance EP56 from the image side surface of the fifth spacer element to the object side surface of the sixth spacer element on the optical axis, and the center thickness CT6 of the sixth lens on the optical axis may satisfy: 10.5<(V6-V5)×EP56 / CT6<17.9.

[0021] In one embodiment, the first lens has positive optical power, and its object side surface is convex, and its image side surface is concave; the second lens has negative optical power, and its object side surface is convex, and its image side surface is concave; the third lens has positive optical power, and its object side surface is convex; the fourth lens has negative optical power, and its object side surface is concave, and its image side surface is concave; the fifth lens has negative optical power, and its object side surface is convex, and its image side surface is concave; the sixth lens has positive optical power, and its object side surface is convex, and its image side surface is convex; and the seventh lens has negative optical power, and its object side surface is concave.

[0022] The optical imaging lens according to the embodiment of the present application includes a lens barrel and a seven-piece lens group and a plurality of spacer elements contained in the lens barrel, wherein the first to seventh lenses are arranged in order from the object side to the image side along the optical axis, a second spacer element directly in contact with the image side surface of the second lens is provided between the second lens and the third lens, and a third spacer element directly in contact with the image side surface of the third lens is provided between the third lens and the fourth lens. The air interval T34 between the third lens and the fourth lens on the optical axis, the maximum thickness CP3 of the third spacer element, the air interval T23 between the second lens and the third lens on the optical axis, and the maximum thickness CP2 of the second spacer element satisfy the conditional formula 2.0<(T34+CP3) / (T23+CP2)<2.6; the Abbe number V3 of the third lens, the outer diameter D3s of the object side surface of the third spacer element, the Abbe number V2 of the second lens, and the outer diameter D2s of the object side surface of the second spacer element satisfy the conditional formula 4.0<(V3×D3s) / (V2×D2s)<4.6. The optical imaging lens according to the implementation mode of the present application can reasonably limit the range of the light path emitted from the second lens and incident on the fourth lens, remove the light with poor edge quality, and can effectively improve the stability of the second lens, the third lens and the fourth lens assembly, reduce the sensitivity of the assembly structure between the lenses, and improve the imaging quality of the lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Other features, purposes and advantages of the present application will become more apparent through the following detailed description of non-limiting embodiments in conjunction with the accompanying drawings. In the accompanying drawings:

[0024] Figure 1 A schematic diagram showing the structure and related parameters of an optical imaging lens according to an exemplary embodiment of the present application is shown;

[0025] Figure 2 A schematic structural diagram of an optical imaging lens according to Embodiment 1 of the present application is shown;

[0026] Figure 3 A schematic structural diagram of an optical imaging lens according to Embodiment 2 of the present application is shown;

[0027] Figures 4 to 7 The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens according to Example 1 and Example 2 of the present application are respectively shown;

[0028] Figure 8 A schematic structural diagram of an optical imaging lens according to Embodiment 3 of the present application is shown;

[0029] Fig. 9 A schematic structural diagram of an optical imaging lens according to Embodiment 4 of the present application is shown;

[0030] Figures 10 to 13 The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens according to Example 3 and Example 4 of the present application are respectively shown;

[0031] Fig.14 A schematic structural diagram of an optical imaging lens according to Embodiment 5 of the present application is shown;

[0032] Fig.15 A schematic structural diagram of an optical imaging lens according to Embodiment 6 of the present application is shown;

[0033] Figures 16 to 19 The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens according to Example 5 and Example 6 of the present application are respectively shown;

[0034] Fig. 20 A schematic structural diagram of an optical imaging lens according to Embodiment 7 of the present application is shown;

[0035] Fig.21 shows a schematic structural diagram of an optical imaging lens according to Embodiment 8 of the present application; and

[0036] Figure 22 to Figure 25 The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens according to Example 7 and Example 8 of the present application are respectively shown. DETAILED DESCRIPTION

[0037] In order to better understand the present application, a more detailed description will be made of various aspects of the present application with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of exemplary embodiments of the present application, and are not intended to limit the scope of the present application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0038] It should be noted that in this specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the features. Therefore, without departing from the teaching of the present application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0039] In the drawings, the thickness, size and shape of the lenses have been slightly exaggerated for ease of explanation. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to the shapes of the spherical or aspherical surfaces shown in the drawings. The drawings are only examples and are not drawn strictly to scale.

[0040] In this article, the paraxial area refers to the area near the optical axis. If the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least in the paraxial area; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is concave at least in the paraxial area. The judgment of the surface type in the paraxial area can be judged according to the general method in this field, for example, the positive and negative R value (R refers to the radius of curvature of the paraxial area) is used to judge the convexity. In this article, the surface of each lens closest to the subject is called the object side of the lens, and the surface of each lens closest to the imaging surface is called the image side of the lens. For the object side, when the R value is positive, it is judged as a convex surface, and when the R value is negative, it is judged as a concave surface; for the image side, when the R value is positive, it is judged as a concave surface, and when the R value is negative, it is judged as a convex surface.

[0041] It should also be understood that the terms "comprises", "including", "having", "includes" and / or "comprising", when used in this specification, indicate the presence of the stated features, elements and / or components, but do not exclude the presence or addition of one or more other features, elements, components and / or combinations thereof. In addition, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire listed features rather than modifying the individual elements in the list. In addition, when describing embodiments of the present application, "may" is used to mean "one or more embodiments of the present application". And, the term "exemplary" is intended to refer to an example or illustration.

[0042] Unless otherwise defined, all terms (including technical terms and scientific terms) used in this article have the same meaning as commonly understood by ordinary technicians in the field to which this application belongs. It should also be understood that terms (such as terms defined in commonly used dictionaries) should be interpreted as having the same meaning as their meaning in the context of the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined in this article.

[0043] It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The following embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can also be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0044] The features, principles and other aspects of the present application are described in detail below.

[0045] The optical imaging lens according to an exemplary embodiment of the present application may include a lens barrel and a lens group and a spacer element group accommodated in the lens barrel. The lens group may be a seven-piece lens group, including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens arranged in sequence from the object side to the image side along the optical axis.

[0046] In an exemplary embodiment, the first lens may have positive optical power, and its object side surface may be convex, and its image side surface may be concave. The second lens may have negative optical power, and its object side surface may be convex, and its image side surface may be concave. The third lens may have positive optical power, and its object side surface may be convex. The fourth lens may have negative optical power, and its object side surface may be concave, and its image side surface may be concave. The fifth lens may have negative optical power, and its object side surface may be convex, and its image side surface may be concave. The sixth lens may have positive optical power, and its object side surface may be convex, and its image side surface may be convex. The seventh lens may have negative optical power, and its object side surface may be concave.

[0047] In an exemplary embodiment, the spacer element group in the optical imaging lens may include: a second spacer element located between the second lens and the third lens and in direct contact with the image side surface of the second lens; and a third spacer element located between the third lens and the fourth lens and in direct contact with the image side surface of the third lens.

[0048] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 2.0<(T34+CP3) / (T23+CP2)<2.6, wherein T34 is the air interval between the third lens and the fourth lens on the optical axis, CP3 is the maximum thickness of the third spacing element (in the direction along the optical axis), T23 is the air interval between the second lens and the third lens on the optical axis, and CP2 is the maximum thickness of the second spacing element (in the direction along the optical axis).

[0049] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the condition 4.0<(V3×D3s) / (V2×D2s)<4.6, wherein V3 is the Abbe number of the third lens, D3s is the outer diameter of the object side surface of the third spacer element, V2 is the Abbe number of the second lens, and D2s is the outer diameter of the object side surface of the second spacer element.

[0050] The optical imaging lens according to the embodiment of the present application includes a lens barrel and a seven-piece lens group and a plurality of spacer elements contained in the lens barrel, wherein the first to seventh lenses are arranged in order from the object side to the image side along the optical axis, a second spacer element directly in contact with the image side surface of the second lens is provided between the second lens and the third lens, and a third spacer element directly in contact with the image side surface of the third lens is provided between the third lens and the fourth lens. The air interval T34 between the third lens and the fourth lens on the optical axis, the maximum thickness CP3 of the third spacer element, the air interval T23 between the second lens and the third lens on the optical axis, and the maximum thickness CP2 of the second spacer element satisfy the conditional formula 2.0<(T34+CP3) / (T23+CP2)<2.6; the Abbe number V3 of the third lens, the outer diameter D3s of the object side surface of the third spacer element, the Abbe number V2 of the second lens, and the outer diameter D2s of the object side surface of the second spacer element satisfy the conditional formula 4.0<(V3×D3s) / (V2×D2s)<4.6. The optical imaging lens according to the implementation mode of the present application can reasonably limit the range of the light path emitted from the second lens and incident on the fourth lens, remove the light with poor edge quality, and can effectively improve the stability of the second lens, the third lens and the fourth lens assembly, reduce the sensitivity of the assembly structure between the lenses, and improve the imaging quality of the lens.

[0051] Referring to Table 1, Table 1 shows the assembled deformation data of the second lens, the third lens and the fourth lens in the optical imaging lens under three conditions: Scheme 1, Scheme 2 and Scheme 3. The optical imaging lens of Scheme 1 satisfies the conditional formula (T34+CP3) / (T23+CP2)=2.4 and (V3×D3s) / (V2×D2s)=4.5; the optical imaging lens of Scheme 2 satisfies the conditional formula (T34+CP3) / (T23+CP2)=0.8 and (V3×D3s) / (V2×D2s)=1.5; the optical imaging lens of Scheme 3 satisfies the conditional formula (T34+CP3) / (T23+CP2)=4 and (V3×D3s) / (V2×D2s)=10. By analyzing the center point displacement and edge point displacement data of the object side and image side of the second lens, the third lens and the fourth lens under different schemes in Table 1, it can be seen that according to the optical imaging lens of Scheme 1, the value of (T34+CP3) / (T23+CP2) is controlled to be greater than 2.0 and less than 2.6, and the value of (V3×D3s) / (V2×D2s) is greater than 4.0 and less than 4.6, so that the center point displacement and edge point displacement of the object side and image side of the second to fourth lenses are relatively small, the assembly stability is higher, and the structure of the optical imaging lens is better. In comparison, according to the optical imaging lens of Scheme 2, the value of the conditional formula (T34+CP3) / (T23+CP2) is within the range of less than or equal to 2.0, and the value of (V3×D3s) / (V2×D2s) is within the range of less than or equal to 4.0; according to the optical imaging lens of Scheme 3, the value of the conditional formula (T34+CP3) / (T23+CP2) is within the range of greater than or equal to 2.6, and the value of (V3×D3s) / (V2×D2s) is within the range of greater than or equal to 4.6; in both cases, the center point displacement and edge point displacement of the object side and image side of the second to fourth lenses of the lens are relatively large, the assembly stability is relatively low, and the structure of the optical imaging lens is poor. Therefore, the optical imaging lens according to the embodiment of the present application controls T34, CP3, T23 and CP2 to satisfy: 2.0<(T34+CP3) / (T23+CP2)<2.6, and controls V3, D3s, V2 and D2s to satisfy: 4.0<(V3×D3s) / (V2×D2s)<4.6, which can reasonably limit the optical path range of the second lens and the fourth lens, eliminate the light with poor edge quality, and effectively improve the stability of the second lens, the third lens and the fourth lens group support, reduce the sensitivity of the lens group structure, and improve the imaging quality of the lens.

[0052]

[0053] Table 1

[0054] In an exemplary embodiment, the spacer element group in the optical imaging lens may further include: a first spacer element, located between the first lens and the second lens and in direct contact with the image side surface of the first lens.

[0055] In an exemplary embodiment, the spacer element group in the optical imaging lens may further include: a fourth spacer element, located between the fourth lens and the fifth lens and in direct contact with the image-side surface of the fourth lens.

[0056] In an exemplary embodiment, the spacer element group in the optical imaging lens may further include: a fifth spacer element, located between the fifth lens and the sixth lens and in direct contact with the image-side surface of the fifth lens.

[0057] In an exemplary embodiment, the spacer element group in the optical imaging lens may further include: a sixth spacer element, located between the sixth lens and the seventh lens and in direct contact with the image-side surface of the sixth lens.

[0058] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 0.7<(EP01-CT1)×V1 / f1<2.1, wherein EP01 is the distance on the optical axis from the object side end face of the lens barrel (the end face or surface of the lens barrel closest to the object side) to the object side face of the first spacer element, CT1 is the center thickness of the first lens on the optical axis, V1 is the Abbe number of the first lens, and f1 is the effective focal length of the first lens. By controlling the lens to satisfy the conditional formula 0.7<(EP01-CT1)×V1 / f1<2.1, it is helpful to improve the strength of the first lens, improve the surface stability of the first lens, and improve the problem of low yield caused by insufficient MTF peak value due to the surface difference of the first lens.

[0059] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 1.5<(R2-R1)×N1 / d1s<2.0, wherein R2 is the radius of curvature of the image side surface of the first lens, R1 is the radius of curvature of the object side surface of the first lens, N1 is the refractive index of the first lens, and d1s is the inner diameter of the object side surface of the first spacer element. By controlling the lens to satisfy the conditional formula 1.5<(R2-R1)×N1 / d1s<2.0, light can be effectively blocked from entering the non-effective diameter portion of the lens, avoiding the generation of excess stray light.

[0060] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 1.5<|f2 / f1| / (D1s / D2s)<3.0, wherein f2 is the effective focal length of the second lens, f1 is the effective focal length of the first lens, D1s is the outer diameter of the object side surface of the first spacing element, and D2s is the outer diameter of the object side surface of the second spacing element. By controlling the lens to satisfy the conditional formula 1.5<|f2 / f1| / (D1s / D2s)<3.0, the overall size of the lens can be effectively controlled, which is beneficial to the molding of the lens, the stability of the assembly, and the miniaturization of the module.

[0061] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 1.0<(T12+CT2+T23) / EP12<1.6, wherein T12 is the air spacing between the first lens and the second lens on the optical axis, CT2 is the center thickness of the second lens on the optical axis, T23 is the air spacing between the second lens and the third lens on the optical axis, and EP12 is the distance between the image side surface of the first spacing element and the object side surface of the second spacing element on the optical axis. By controlling the lens to satisfy the conditional formula 1.0<(T12+CT2+T23) / EP12<1.6, it is helpful to control the edge thickness of the first lens and the second lens, and further helps to control the ratio of the edge thickness of the first lens and the second lens to the middle thickness of the first lens and the second lens not to be too large, thereby ensuring the molding of the first lens and the second lens, and at the same time, it can avoid the problem that the reflection path in the lens is increased due to the excessive edge thickness of the lens, which is not conducive to the improvement and improvement of the lens shooting effect, and it is also helpful to meet the need to improve the stray light of the optical imaging lens.

[0062] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 4.4<f12 / (D2m-d2m)<10.2, wherein f12 is the combined focal length of the first lens and the second lens, D2m is the outer diameter of the image side surface of the second spacing element, and d2m is the inner diameter of the image side surface of the second spacing element. By controlling the lens to satisfy the conditional formula 4.4<f12 / (D2m-d2m)<10.2, it is helpful to improve the strength of the second lens, improve the assembly stability of the second lens and the second spacing element, and improve the problem of low yield caused by poor matching between the first lens, the second lens, and the first spacing element and the second spacing element.

[0063] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 1.6<(R3×d1m) / (R4×d2s)<2.0, wherein R3 is the radius of curvature of the object side surface of the second lens, d1m is the inner diameter of the image side surface of the first spacing element, R4 is the radius of curvature of the image side surface of the second lens, and d2s is the inner diameter of the object side surface of the second spacing element. By controlling the lens to satisfy the conditional formula 1.6<(R3×d1m) / (R4×d2s)<2.0, light can be effectively blocked from entering the non-effective diameter portion of the lens, avoiding the generation of excess stray light.

[0064] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 1.3<(EP12+EP23) / CT3<1.6, wherein EP12 is the distance from the image side surface of the first spacing element to the object side surface of the second spacing element on the optical axis, EP23 is the distance from the image side surface of the second spacing element to the object side surface of the third spacing element on the optical axis, and CT3 is the center thickness of the third lens on the optical axis. By controlling the lens to satisfy the conditional formula 1.3<(EP12+EP23) / CT3<1.6, the shapes of the first and second lenses can be effectively controlled to ensure the processability of the lens, which is beneficial to injection molding, and at the same time, the edge light trend can be effectively controlled to ensure the image quality of the edge field of view.

[0065] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 2.3<R5 / d3s<3.2, wherein R5 is the radius of curvature of the object side surface of the third lens, and d3s is the inner diameter of the object side surface of the third spacing element. By controlling the ratio of the radius of curvature of the object side surface of the third lens to the inner diameter of the object side surface of the third spacing element within this range, the shielding of light by the spacing element can be improved, thereby reducing the occurrence of stray light.

[0066] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 0.5<CT3 / (CT4+CT5+CP4)<1.1, wherein CT3 is the center thickness of the third lens on the optical axis, CT4 is the center thickness of the fourth lens on the optical axis, CT5 is the center thickness of the fifth lens on the optical axis, and CP4 is the maximum thickness of the fourth spacing element (along the optical axis direction). By controlling the lens to satisfy the conditional formula 0.5<CT3 / (CT4+CT5+CP4)<1.1, the center thickness of the lens and the thickness of the spacing element are reasonably controlled to ensure that the gap / gap between the lenses is within a reasonable range, which is conducive to improving the stability of the gap-sensitive position, avoiding the situation where the distance between the edges of each lens is too large, and is more conducive to the molding and filling of the lens; at the same time, the design further limits the size of the spacing, which is more conducive to the miniaturization of the module.

[0067] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 1.7<(T45+T56) / EP45<2.9, wherein T45 is the air spacing between the fourth lens and the fifth lens on the optical axis, T56 is the air spacing between the fifth lens and the sixth lens on the optical axis, and EP45 is the distance from the image side surface of the fourth spacing element to the object side surface of the fifth spacing element on the optical axis. By controlling the lens to satisfy the conditional formula 1.7<(T45+T56) / EP45<2.9, the air spacing between the fourth lens and the fifth lens, the air spacing between the fifth lens and the sixth lens, and the distance between the fourth spacing element and the fifth spacing element can be reasonably controlled, which can facilitate the molding and assembly of the fourth, fifth, and sixth lens lenses.

[0068] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula -25.0<f4 / d4s+f5 / d5s<-12.0, wherein f4 is the effective focal length of the fourth lens, d4s is the inner diameter of the object side of the fourth spacer element, f5 is the effective focal length of the fifth lens, and d5s is the inner diameter of the object side of the fifth spacer element. By controlling the lens to satisfy the conditional formula -25.0<f4 / d4s+f5 / d5s<-12.0, the aperture size of the overall lens can be effectively controlled, which is beneficial to the molding and assembly stability of the lens, and is beneficial to reducing stray light and improving the imaging quality of the lens.

[0069] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula -1.6<f45 / (D4m+D5m)<-0.8, wherein f45 is the combined focal length of the fourth lens and the fifth lens, D4m is the outer diameter of the image side surface of the fourth spacer element, and D5m is the outer diameter of the image side surface of the fifth spacer element. By controlling the lens to satisfy the conditional formula -1.6<f45 / (D4m+D5m)<-0.8, the size of the overall lens can be effectively controlled, which is beneficial to the molding stability of the lens and the miniaturization of the module.

[0070] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 0.9<(R9 / R10)×d5s / D5s<2.7, wherein R9 is the radius of curvature of the object side surface of the fifth lens, R10 is the radius of curvature of the image side surface of the fifth lens, d5s is the inner diameter of the object side surface of the fifth spacing element, and D5s is the outer diameter of the object side surface of the fifth spacing element. By controlling the lens to satisfy the conditional formula 0.9<(R9 / R10)×d5s / D5s<2.7, it is beneficial to ensure the performance of the lens and meet the needs of imaging quality, and the degree of concave-convex of the fifth lens can be reasonably controlled, and the incident and exit states of the light from the fifth lens can be reasonably controlled, which is beneficial to the imaging effect of the lens; at the same time, the degree of shielding of the fifth spacing element on the optical path of the fifth lens can be reasonably controlled, which is beneficial to the improvement of the imaging quality of the lens.

[0071] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 2.4<(T67+CT7) / CP6<3.4, wherein T67 is the air spacing between the sixth lens and the seventh lens on the optical axis, CT7 is the center thickness of the seventh lens on the optical axis, and CP6 is the maximum thickness of the sixth spacing element (along the optical axis). By controlling the lens to satisfy the conditional formula 2.4<(T67+CT7) / CP6<3.4, it is possible to ensure that the sixth spacing element has sufficient bearing space, which is conducive to improving assembly stability.

[0072] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 1.4<R11 / (D6s-d6s)<3.3, wherein R11 is the radius of curvature of the object side surface of the sixth lens, D6s is the outer diameter of the object side surface of the sixth spacer element, and d6s is the inner diameter of the object side surface of the sixth spacer element. By controlling the lens to satisfy the conditional formula 1.4<R11 / (D6s-d6s)<3.3, it is helpful to ensure that the object side surface of the sixth lens has sufficient support, which is beneficial to the assembly of the lens and reduces the assembly impact of the sixth lens.

[0073] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula -0.6<(D6m-d6m) / R13<0, wherein D6m is the outer diameter of the image side surface of the sixth spacer element, d6m is the inner diameter of the image side surface of the sixth spacer element, and R13 is the radius of curvature of the object side surface of the seventh lens. By controlling the lens to satisfy the conditional formula -0.6<(D6m-d6m) / R13<0, it is beneficial to ensure that the object side surface of the seventh lens is sufficiently supported, which is beneficial to the assembly stability of the overall lens.

[0074] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 10.5<(V6-V5)×EP56 / CT6<17.9, wherein V6 is the Abbe number of the sixth lens, V5 is the Abbe number of the fifth lens, EP56 is the distance on the optical axis from the image side surface of the fifth spacing element to the object side surface of the sixth spacing element, and CT6 is the center thickness of the sixth lens on the optical axis. By controlling the lens to satisfy the conditional formula 10.5<(V6-V5)×EP56 / CT6<17.9, the optical path range of the fifth lens and the sixth lens can be reasonably limited, and light with poor edge quality can be eliminated. In addition, the stability of the fifth lens and the sixth lens assembly can be effectively improved, the sensitivity of the assembly structure between the lenses can be reduced, and the imaging quality of the lens can be improved.

[0075] In an exemplary embodiment, the optical imaging lens of the present application may include at least one aperture. The aperture may constrain the light path and control the light intensity. The aperture may be set at an appropriate position of the optical imaging lens, for example, the aperture may be set between the object side and the first lens.

[0076] In an exemplary embodiment, optionally, the optical imaging lens may further include a filter for correcting color deviation and / or a protective glass for protecting a photosensitive element located on the imaging surface.

[0077] In an exemplary embodiment, the mirror surfaces of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens may include one or more aspherical mirror surfaces, and the aspherical mirror surfaces have better curvature radius characteristics, and have the advantages of improving distortion aberration and improving astigmatism aberration. The use of aspherical mirror surfaces can eliminate aberrations that occur during imaging as much as possible, thereby improving imaging quality.

[0078] On the one hand, the optical imaging lens according to the embodiment of the present application includes a lens barrel and a seven-piece lens group and a plurality of spacer elements contained in the lens barrel, wherein the first to seventh lenses are arranged in sequence from the object side to the image side along the optical axis, a second spacer element directly in contact with the image side surface of the second lens is provided between the second lens and the third lens, and a third spacer element directly in contact with the image side surface of the third lens is provided between the third lens and the fourth lens. The air interval T34 between the third lens and the fourth lens on the optical axis, the maximum thickness CP3 of the third spacer element, the air interval T23 between the second lens and the third lens on the optical axis, and the maximum thickness CP2 of the second spacer element satisfy the conditional formula 2.0<(T34+CP3) / (T23+CP2)<2.6; the Abbe number V3 of the third lens, the outer diameter D3s of the object side surface of the third spacer element, the Abbe number V2 of the second lens, and the outer diameter D2s of the object side surface of the second spacer element satisfy the conditional formula 4.0<(V3×D3s) / (V2×D2s)<4.6. The optical imaging lens according to the implementation mode of the present application can reasonably limit the range of the light path emitted from the second lens and incident on the fourth lens, remove the light with poor edge quality, and can effectively improve the stability of the second lens, the third lens and the fourth lens assembly, reduce the sensitivity of the assembly structure between the lenses, and improve the imaging quality of the lens.

[0079] On the other hand, the optical imaging lens according to the embodiment of the present application includes a lens barrel and a seven-piece lens group and a plurality of spacer elements contained in the lens barrel, wherein the first to seventh lenses are arranged in sequence from the object side to the image side along the optical axis, a first spacer element directly in contact with the image side surface of the first lens is arranged between the first lens and the second lens, a second spacer element directly in contact with the image side surface of the second lens is arranged between the second lens and the third lens, and a third spacer element directly in contact with the image side surface of the third lens is arranged between the third lens and the fourth lens. Through the above-mentioned setting of the optical imaging lens, the distance EP12 from the image side surface of the first spacer element to the object side surface of the second spacer element on the optical axis, the distance EP23 from the image side surface of the second spacer element to the object side surface of the third spacer element on the optical axis, and the center thickness CT3 of the third lens on the optical axis are controlled to satisfy the conditional formula 1.3<(EP12+EP23) / CT3<1.6, which can effectively control the shapes of the first and second lenses, ensure the processability of the lens, and facilitate injection molding, and at the same time effectively control the trend of edge light and ensure the image quality of the edge field of view.

[0080] On the other hand, the optical imaging lens according to the embodiment of the present application includes a lens barrel and a seven-piece lens group and a plurality of spacer elements contained in the lens barrel, wherein the first to seventh lenses are arranged in sequence from the object side to the image side along the optical axis, a first spacer element directly in contact with the image side surface of the first lens is arranged between the first lens and the second lens, a second spacer element directly in contact with the image side surface of the second lens is arranged between the second lens and the third lens, and a third spacer element directly in contact with the image side surface of the third lens is arranged between the third lens and the fourth lens. By the above-mentioned arrangement of the optical imaging lens, the combined focal length f12 of the first lens and the second lens, the outer diameter D2m of the image side surface of the second spacer element, and the inner diameter d2m of the image side surface of the second spacer element are controlled to satisfy the conditional formula 4.4<f12 / (D2m-d2m)<10.2 at the same time, which can help to improve the strength of the second lens, improve the assembly stability of the second lens and the second spacer element, and improve the problem of low yield caused by poor matching between the first lens, the second lens, and the first spacer element and the second spacer element.

[0081] On the other hand, according to an embodiment of the present application, an optical imaging lens includes a lens barrel and a seven-piece lens group and a plurality of spacer elements housed in the lens barrel, wherein the first to seventh lenses are arranged in sequence from the object side to the image side along the optical axis, a second spacer element is provided between the second lens and the third lens and is in direct contact with the image side surface of the second lens, a third spacer element is provided between the third lens and the fourth lens and is in direct contact with the image side surface of the third lens, a fifth spacer element is provided between the fifth lens and the sixth lens and is in direct contact with the image side surface of the fifth lens, and a sixth spacer element is provided between the sixth lens and the seventh lens and is in direct contact with the image side surface of the sixth lens. By the above-mentioned setting of the optical imaging lens, the curvature radius R9 of the object side surface of the fifth lens, the curvature radius R10 of the image side surface of the fifth lens, the inner diameter d5s of the object side surface of the fifth spacing element, and the outer diameter D5s of the object side surface of the fifth spacing element are controlled to satisfy the conditional formula 0.9<(R9 / R10)×d5s / D5s<2.7, which is beneficial to ensuring the lens performance and meeting the needs of imaging quality; the concave-convex degree of the fifth lens can be reasonably controlled, and the incident and emerging states of the light from the fifth lens can be reasonably controlled, which is beneficial to the imaging effect of the lens; at the same time, the shielding degree of the fifth spacing element on the optical path of the fifth lens can be reasonably controlled, which is beneficial to the improvement of the imaging quality of the lens.

[0082] However, those skilled in the art should understand that, without departing from the technical solution claimed in the present application, the number of lenses constituting the optical imaging lens can be changed, and the number of spacing elements can also be changed to obtain the various results and advantages described in this specification, and the present application does not specifically limit this. For example, although seven lenses are described as an example in the embodiment, the optical imaging lens is not limited to including seven lenses. If necessary, the optical imaging lens may also include other numbers of lenses. For another example, as needed, the optical imaging lens may also include other numbers of spacing elements different from those described in the above embodiment.

[0083] Specific embodiments of the optical imaging lens applicable to the above-mentioned embodiments are further described below with reference to the accompanying drawings.

[0084] Example 1

[0085] The following reference Figure 2 An optical imaging lens according to Embodiment 1 of the present application is described.

[0086] like Figure 2 As shown, in this embodiment, the optical imaging lens comprises a lens barrel and a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6 and a seventh lens E7 accommodated in the lens barrel and arranged in sequence from the object side to the image side along the optical axis.

[0087] In this embodiment, the optical imaging lens further includes a plurality of spacing elements: a first spacing element P1, located between the first lens E1 and the second lens E2 and in direct contact with the image side surface of the first lens E1; a second spacing element P2, located between the second lens E2 and the third lens E3 and in direct contact with the image side surface of the second lens E2; a third spacing element P3, located between the third lens E3 and the fourth lens E4 and in direct contact with the image side surface of the third lens E3; a fourth spacing element P4, located between the fourth lens E4 and the fifth lens E5 and in direct contact with the image side surface of the fourth lens E4; a fifth spacing element P5, located between the fourth lens E4 and the fifth lens E5 and in direct contact with the image side surface of the fourth lens E4; and a fifth spacing element P6, located between the fifth lens E5 and the fifth lens E6. The fifth auxiliary spacing element P5b is located between the fifth spacing element P5 and the sixth lens E6 and is in direct contact with the image side surface of the sixth lens E6; the sixth spacing element P6 is located between the sixth lens E6 and the seventh lens E7 and is in direct contact with the image side surface of the sixth lens E6; the sixth auxiliary spacing element P6b is located between the sixth spacing element P6 and the seventh lens E7 and is in direct contact with the object side surface of the seventh lens E7; and the seventh spacing element P7 is located on the image side of the seventh lens E7 and is in direct contact with the image side surface of the seventh lens E7.

[0088] In this embodiment, the first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has negative focal power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has positive focal power, and its object side surface S5 is convex, and its image side surface S6 is concave. The fourth lens E4 has negative focal power, and its object side surface S7 is concave, and its image side surface S8 is concave. The fifth lens E5 has negative focal power, and its object side surface S9 is convex, and its image side surface S10 is concave. The sixth lens E6 has positive focal power, and its object side surface S11 is convex, and its image side surface S12 is convex. The seventh lens E7 has negative focal power, and its object side surface S13 is concave, and its image side surface S14 is concave.

[0089] In this embodiment, the optical imaging lens may further include, for example, a filter (not shown in the figure) located on the image side of the seventh lens E7, having an object-side surface S15 and an image-side surface S16, and an imaging surface S17 (not shown in the figure) located on the image side of the filter. Light from the object may, for example, sequentially pass through the surfaces S1 to S16 and finally be imaged on the imaging surface S17.

[0090] Table 2 shows basic parameters of the optical imaging lens of Example 1, wherein the units of the radius of curvature and thickness / distance are all millimeters (mm).

[0091]

[0092] Table 2

[0093] In Example 1, the object side surface and the image side surface of any lens among the first lens E1 to the seventh lens E7 are both aspherical surfaces, and the surface shape x of each aspherical lens can be defined by but not limited to the following aspherical surface formula:

[0094]

[0095] Wherein, x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at a height of h along the optical axis; c is the paraxial curvature of the aspheric surface, c=1 / R (i.e., the paraxial curvature c is the reciprocal of the curvature radius R in Table 1 above); k is the cone coefficient; Ai is the correction coefficient of the i-th order of the aspheric surface. The following Tables 3-1 and 3-2 give the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A56, A57, A58, A59, A60, A61, A71, A72, A73, A74, A75 10 , A 12 , A 14 , A 16 , A 18 , A 20 , A 22 , A 24 , A 26 , A 28 and A 30 .

[0096] Face number A4 A6 A8 A10 A12 A14 A16 S1 -4.5128E-02 -6.8327E-03 -2.5969E-04 -2.6699E-04 -2.5507E-04 -2.4022E-05 7.1206E-05 S2 -2.5386E-02 8.3239E-03 3.5363E-04 -1.0951E-03 -5.4972E-04 -8.3551E-05 3.1564E-05 S3 3.6108E-02 1.7492E-02 -3.1602E-03 -1.5047E-03 -3.5166E-04 2.0078E-04 1.4801E-04 S4 5.6487E-02 2.2760E-04 -5.3337E-03 -1.3229E-03 -3.1883E-04 1.0269E-04 1.3604E-04 S5 1.1472E-01 1.8939E-02 8.7769E-04 -4.8552E-04 -2.1284E-04 3.4884E-05 4.8767E-05 S6 2.0665E-02 1.9414E-02 6.1697E-03 2.0435E-03 6.9336E-04 2.0110E-04 6.2999E-05 S7 -2.9878E-01 -9.4911E-03 4.3645E-04 5.5654E-04 -1.9994E-04 -5.6308E-05 -1.7928E-04 S8 -3.7981E-01 1.8815E-02 1.4040E-02 6.1665E-03 8.7829E-04 -1.1912E-04 -6.0637E-04 S9 -1.0763E+00 7.3877E-02 -2.3240E-02 1.7487E-02 -5.8547E-03 1.4453E-03 -2.7918E-04 S10 -1.6434E+00 3.2042E-01 -5.3967E-02 8.1287E-03 -1.7320E-02 5.7189E-03 1.3998E-03 S11 -2.8415E+00 2.1086E-01 1.5278E-01 -4.0529E-02 -2.8066E-02 6.6848E-03 3.6708E-03 S12 -7.6074E-01 -1.6544E-01 1.4252E-01 -7.2790E-02 2.5142E-02 9.8134E-03 -6.0257E-03 S13 3.0578E+00 -6.7938E-02 -8.9946E-02 3.0917E-02 -5.4844E-03 -6.9909E-03 8.2619E-04 S14 -2.2971E+00 3.3951E-01 7.7952E-02 3.0223E-02 -3.4717E-02 -1.8528E-02 -6.3530E-04

[0097] Table 3-1

[0098] Face number A18 A20 A22 A24 A26 A28 A30 S1 5.5178E-05 1.7975E-05 7.7746E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 2.2262E-05 5.2822E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 5.8641E-05 5.2115E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 7.9810E-05 3.3255E-05 9.7363E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 2.3161E-05 6.4638E-06 1.4159E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 2.0135E-05 9.4286E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 -5.7995E-05 -4.9936E-05 9.1652E-08 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S8 -3.3817E-04 -1.7811E-04 -4.0475E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S9 2.4564E-04 -2.8443E-04 -1.0703E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S10 3.5992E-04 -1.0177E-03 -3.1033E-05 -1.3735E-06 0.0000E+00 0.0000E+00 0.0000E+00 S11 1.6963E-03 -1.4570E-03 -9.4237E-04 -7.7158E-05 2.0189E-04 5.6864E-06 0.0000E+00 S12 -1.9146E-04 -6.6036E-04 -3.3504E-05 -2.4593E-06 -1.8690E-07 0.0000E+00 0.0000E+00 S13 -5.3429E-04 -2.5003E-04 -1.7422E-05 -1.7792E-06 -1.8824E-07 0.0000E+00 0.0000E+00 S14 1.0941E-04 5.0286E-04 3.7868E-05 4.2611E-06 5.2972E-07 6.2770E-08 0.0000E+00

[0099] Table 3-2

[0100] Referring to Table 10, the values ​​of multiple related parameters of the lens barrel and each spacing element in this embodiment are respectively shown in the column of "Example 1" in Table 10. The specific descriptions of the multiple related parameters shown in Table 10 are as follows: d1s is the inner diameter of the object side surface of the first spacing element P1, d1m is the inner diameter of the image side surface of the first spacing element P1, D1s is the outer diameter of the object side surface of the first spacing element P1, d2s is the inner diameter of the object side surface of the second spacing element P2, d2m is the inner diameter of the image side surface of the second spacing element P2, and D2s is the outer diameter of the second spacing element P2. d2m is the outer diameter of the object side surface of the second spacing element P2, d3s is the inner diameter of the object side surface of the third spacing element P3, D3s is the outer diameter of the object side surface of the third spacing element P3, d4s is the inner diameter of the object side surface of the fourth spacing element P4, D4m is the outer diameter of the image side surface of the fourth spacing element P4, d5s is the inner diameter of the object side surface of the fifth spacing element P5, D5s is the outer diameter of the object side surface of the fifth spacing element P5, D5m is the outer diameter of the image side surface of the fifth spacing element P5, d6s is the inner diameter of the object side surface of the sixth spacing element P5, D6s is the outer diameter of the object side surface of the fifth spacing element P5, D6m is the outer diameter of the image side surface of the fifth spacing element P5, and d7s is the inner diameter of the object side surface of the sixth spacing element P5. The inner diameter of the object side surface of the sixth spacing element P6, d6m is the inner diameter of the image side surface of the sixth spacing element P6, D6s is the outer diameter of the object side surface of the sixth spacing element P6, D6m is the outer diameter of the image side surface of the sixth spacing element P6, EP01 is the distance on the optical axis from the object side end surface of the lens barrel to the object side surface of the first spacing element P1, EP12 is the distance on the optical axis from the image side surface of the first spacing element P1 to the object side surface of the second spacing element P2, and EP23 is the distance on the optical axis from the image side surface of the second spacing element P2 to the object side surface of the third spacing element P3 , EP45 is the distance on the optical axis from the image side of the fourth spacing element P4 to the object side of the fifth spacing element P5, EP56 is the distance on the optical axis from the image side of the fifth spacing element P5 to the object side of the sixth spacing element P6, CP2 is the maximum thickness of the second spacing element P2 along the optical axis, CP3 is the maximum thickness of the third spacing element P3 along the optical axis, CP4 is the maximum thickness of the fourth spacing element P4 along the optical axis, and CP6 is the maximum thickness of the sixth spacing element P6 along the optical axis. The units of the above parameters shown in Table 10 are all millimeters (mm). The schematic diagram of the above parameters in the structural diagram of the optical imaging lens is as follows: Figure 1 shown.

[0101] Example 2

[0102] The following reference Figure 3 An optical imaging lens according to Embodiment 2 of the present application is described.

[0103] like Figure 3As shown, in this embodiment, similar to Embodiment 1, the optical imaging lens comprises a lens barrel and a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6 and a seventh lens E7 which are accommodated in the lens barrel and arranged in sequence from the object side to the image side along the optical axis. The optical imaging lens further comprises a plurality of spacing elements: a first spacing element P1, which is located between the first lens E1 and the second lens E2 and is in direct contact with the image side surface of the first lens E1; a second spacing element P2, which is located between the second lens E2 and the third lens E3 and is in direct contact with the image side surface of the second lens E2; a third spacing element P3, which is located between the third lens E3 and the fourth lens E4 and is in direct contact with the image side surface of the third lens E3; a fourth spacing element P4, which is located between the fourth lens E4 and the fifth lens E5 and is in direct contact with the image side surface of the fourth lens E4; a fifth spacing element P5, which is located between the fifth lens E5 and the fifth lens E5 and the sixth lens E6 and in direct contact with the image side surface of the fifth lens E5. A fifth auxiliary spacing element P5b is located between the fifth spacing element P5 and the sixth lens E6 and in direct contact with the object side surface of the sixth lens E6. The sixth spacing element P6 is located between the sixth lens E6 and the seventh lens E7 and in direct contact with the image side surface of the sixth lens E6. The sixth auxiliary spacing element P6b is located between the sixth spacing element P6 and the seventh lens E7 and in direct contact with the object side surface of the seventh lens E7. And, the seventh spacing element P7 is located on the image side of the seventh lens E7 and in direct contact with the image side surface of the seventh lens E7.

[0104] In addition, the basic parameter table of the optical imaging lens of this embodiment is the same as Table 2, and the high-order coefficient table of the aspherical mirror surface is the same as Table 3-1 and Table 3-2.

[0105] The difference between this embodiment and embodiment 1 is that the values ​​of all or part of the relevant parameters shown in Table 10 are different, and the values ​​of the parameters in this embodiment are shown in the 'Example 2' column in Table 10. The specific description of the meaning represented by each parameter is the same as that in the above embodiment 1, and will not be repeated here.

[0106] Figure 4 The axial chromatic aberration curves of the optical imaging lenses of Example 1 and Example 2 are shown, which indicate the deviation of the convergent focus of light rays of different wavelengths passing through the back of the lens. Figure 5 The astigmatism curves of the optical imaging lenses of Example 1 and Example 2 are shown, which represent the meridional image curvature and the sagittal image curvature. Figure 6 The distortion curves of the optical imaging lenses of Example 1 and Example 2 are shown, which represent the distortion magnitude values ​​corresponding to different image heights. Figure 7 The magnification chromatic aberration curves of the optical imaging lenses of Example 1 and Example 2 are shown, which represent the deviations of different image heights on the imaging surface after the light passes through the lens. Figures 4 to 7It can be seen that the optical imaging lenses provided in Example 1 and Example 2 can achieve good imaging quality.

[0107] Example 3

[0108] The following reference Figure 8 An optical imaging lens according to Embodiment 3 of the present application is described.

[0109] like Figure 8 As shown, in this embodiment, the optical imaging lens comprises a lens barrel and a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6 and a seventh lens E7 accommodated in the lens barrel and arranged in sequence from the object side to the image side along the optical axis.

[0110] In this embodiment, the optical imaging lens further includes a plurality of spacing elements: a first spacing element P1, located between the first lens E1 and the second lens E2 and in direct contact with the image side surface of the first lens E1; a second spacing element P2, located between the second lens E2 and the third lens E3 and in direct contact with the image side surface of the second lens E2; a third spacing element P3, located between the third lens E3 and the fourth lens E4 and in direct contact with the image side surface of the third lens E3; a fourth spacing element P4, located between the fourth lens E4 and the fifth lens E5 and in direct contact with the image side surface of the fourth lens E4; a fifth spacing element P5, located between the fourth lens E4 and the fifth lens E5 and in direct contact with the image side surface of the fourth lens E4; and a fifth spacing element P6, located between the fifth lens E5 and the fifth lens E6. The fifth auxiliary spacing element P5b is located between the fifth spacing element P5 and the sixth lens E6 and is in direct contact with the image side surface of the sixth lens E6; the sixth spacing element P6 is located between the sixth lens E6 and the seventh lens E7 and is in direct contact with the image side surface of the sixth lens E6; the sixth auxiliary spacing element P6b is located between the sixth spacing element P6 and the seventh lens E7 and is in direct contact with the object side surface of the seventh lens E7; and the seventh spacing element P7 is located on the image side of the seventh lens E7 and is in direct contact with the image side surface of the seventh lens E7.

[0111] In this embodiment, the first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has negative focal power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has positive focal power, and its object side surface S5 is convex, and its image side surface S6 is concave. The fourth lens E4 has negative focal power, and its object side surface S7 is concave, and its image side surface S8 is concave. The fifth lens E5 has negative focal power, and its object side surface S9 is convex, and its image side surface S10 is concave. The sixth lens E6 has positive focal power, and its object side surface S11 is convex, and its image side surface S12 is convex. The seventh lens E7 has negative focal power, and its object side surface S13 is concave, and its image side surface S14 is convex.

[0112] In this embodiment, the optical imaging lens may further include, for example, a filter (not shown in the figure) located on the image side of the seventh lens E7, having an object-side surface S15 and an image-side surface S16, and an imaging surface S17 (not shown in the figure) located on the image side of the filter. Light from the object may, for example, sequentially pass through the surfaces S1 to S16 and finally be imaged on the imaging surface S17.

[0113] Table 4 shows basic parameters of the optical imaging lens of Example 3, wherein the units of the radius of curvature and thickness / distance are all millimeters (mm).

[0114]

[0115] Table 4

[0116] In this embodiment, the object side surface and the image side surface of any lens of the first lens E1 to the seventh lens E7 are both aspherical surfaces, and the surface shape of each aspherical surface can be defined by the formula (1) given in the above embodiment 1. Tables 5-1 and 5-2 show the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50 10 , A 12 , A 14 , A 16 , A 18 , A 20 , A 22 , A 24 , A 26 , A 28 and A 30 .

[0117] Face number A4 A6 A8 A10 A12 A14 A16 S1 -4.3899E-02 -7.0992E-03 -2.6310E-04 -2.1306E-04 -2.3055E-04 -3.8936E-05 6.0691E-05 S2 -2.5836E-02 8.5121E-03 4.1076E-04 -1.1250E-03 -5.6763E-04 -8.4443E-05 3.3333E-05 S3 3.5929E-02 1.7222E-02 -3.0738E-03 -1.5032E-03 -3.8461E-04 1.8631E-04 1.5486E-04 S4 5.5537E-02 1.5975E-04 -5.3424E-03 -1.2876E-03 -2.9414E-04 1.0002E-04 1.2898E-04 S5 1.1038E-01 1.9323E-02 1.0713E-03 -4.6277E-04 -2.1427E-04 1.7816E-05 3.0169E-05 S6 2.3536E-02 1.9246E-02 6.2100E-03 2.0729E-03 6.7236E-04 1.9301E-04 5.3878E-05 S7 -2.9337E-01 -9.8267E-03 2.0218E-04 7.8069E-04 -5.5817E-05 1.3831E-04 -7.3897E-05 S8 -3.7705E-01 1.9417E-02 1.3786E-02 6.3386E-03 8.7337E-04 6.0550E-05 -4.9404E-04 S9 -9.8807E-01 5.7945E-02 -1.7140E-02 1.4731E-02 -5.3657E-03 1.7374E-03 -2.1854E-04 S10 -1.5734E+00 3.0324E-01 -4.8089E-02 6.7587E-03 -1.6476E-02 5.1705E-03 1.1242E-03 S11 -3.1470E+00 2.0405E-01 1.1862E-01 -3.9280E-02 -3.1492E-02 8.1027E-03 2.0391E-03 S12 -7.8937E-01 -1.3547E-01 1.2770E-01 -6.5958E-02 2.2952E-02 9.7555E-03 -6.9995E-03 S13 3.4200E+00 -1.6221E-01 -6.3350E-02 1.6949E-02 2.0725E-03 -1.2031E-02 3.6138E-03 S14 -1.3946E+00 6.0998E-02 1.8903E-01 -7.7840E-03 -4.7290E-03 -2.5722E-02 4.4872E-03

[0118] Table 5-1

[0119] Face number A18 A20 A22 A24 A26 A28 A30 S1 5.2390E-05 2.0790E-05 8.8623E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 2.4129E-05 5.5142E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 6.7316E-05 9.8121E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 7.6008E-05 3.4080E-05 9.2730E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 8.6378E-06 1.0879E-06 3.6968E-08 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 1.7671E-05 7.4809E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 1.6923E-05 -2.4398E-05 1.0042E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S8 -2.5403E-04 -1.4928E-04 -3.2011E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S9 1.3894E-04 -3.4110E-04 -1.3238E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S10 5.3808E-04 -9.2487E-04 -2.9096E-05 -1.3297E-06 0.0000E+00 0.0000E+00 0.0000E+00 S11 1.7282E-03 -1.4372E-03 -6.6050E-04 -1.2864E-04 1.0963E-04 2.1729E-06 0.0000E+00 S12 7.5363E-04 -7.6596E-04 -3.4613E-05 -2.3216E-06 -1.6296E-07 0.0000E+00 0.0000E+00 S13 -1.0857E-03 8.5967E-05 3.1164E-06 1.5092E-07 3.2281E-10 0.0000E+00 0.0000E+00 S14 -2.6011E-03 -1.2598E-03 -7.4989E-05 -6.3216E-06 -5.6559E-07 -4.7901E-08 0.0000E+00

[0120] Table 5-2

[0121] Referring to Table 10, the values ​​of the relevant parameters in this embodiment are shown in the 'Example 3' column in Table 10, wherein the specific description of the meaning represented by each parameter is the same as that in the above Example 1, and will not be repeated here.

[0122] Example 4

[0123] The following reference Fig. 9 An optical imaging lens according to Embodiment 4 of the present application is described.

[0124] like Fig. 9As shown, in this embodiment, similar to Embodiment 3, the optical imaging lens comprises a lens barrel and a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6 and a seventh lens E7 which are accommodated in the lens barrel and arranged in sequence from the object side to the image side along the optical axis. The optical imaging lens further comprises a plurality of spacing elements: a first spacing element P1, which is located between the first lens E1 and the second lens E2 and is in direct contact with the image side surface of the first lens E1; a second spacing element P2, which is located between the second lens E2 and the third lens E3 and is in direct contact with the image side surface of the second lens E2; a third spacing element P3, which is located between the third lens E3 and the fourth lens E4 and is in direct contact with the image side surface of the third lens E3; a fourth spacing element P4, which is located between the fourth lens E4 and the fifth lens E5 and is in direct contact with the image side surface of the fourth lens E4; a fifth spacing element P5, which is located between the fifth lens E5 and the fifth lens E5 and the sixth lens E6 and in direct contact with the image side surface of the fifth lens E5. A fifth auxiliary spacing element P5b is located between the fifth spacing element P5 and the sixth lens E6 and in direct contact with the object side surface of the sixth lens E6. The sixth spacing element P6 is located between the sixth lens E6 and the seventh lens E7 and in direct contact with the image side surface of the sixth lens E6. The sixth auxiliary spacing element P6b is located between the sixth spacing element P6 and the seventh lens E7 and in direct contact with the object side surface of the seventh lens E7. And, the seventh spacing element P7 is located on the image side of the seventh lens E7 and in direct contact with the image side surface of the seventh lens E7.

[0125] In addition, the basic parameter table of the optical imaging lens of this embodiment is the same as Table 4, and the high-order coefficient table of the aspherical mirror surface is the same as Table 5-1 and Table 5-2.

[0126] The difference between this embodiment and embodiment 3 is that the values ​​of all or part of the relevant parameters shown in Table 10 are different, and the values ​​of the parameters in this embodiment are shown in the 'Example 4' column in Table 10. The specific description of the meaning represented by each parameter is the same as that in the above embodiment 1, and will not be repeated here.

[0127] Fig.10 The axial chromatic aberration curves of the optical imaging lenses of Example 3 and Example 4 are shown, which indicate the deviation of the convergent focus of light rays of different wavelengths passing through the lens. Fig.11 Astigmatism curves of the optical imaging lenses of Examples 3 and 4 are shown, which represent meridional image curvature and sagittal image curvature. Fig.12 The distortion curves of the optical imaging lenses of Example 3 and Example 4 are shown, which represent the distortion magnitude values ​​corresponding to different image heights. Fig.13 The magnification chromatic aberration curves of Example 3 and Example 4 are shown, which represent the deviations of different image heights on the imaging surface after the light passes through the lens. Figures 10 to 13It can be seen that the optical imaging lenses provided in Examples 3 and 4 can achieve good imaging quality.

[0128] Example 5

[0129] The following reference Fig.14 An optical imaging lens according to Embodiment 5 of the present application is described.

[0130] like Fig.14 As shown, in this embodiment, the optical imaging lens comprises a lens barrel and a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6 and a seventh lens E7 accommodated in the lens barrel and arranged in sequence from the object side to the image side along the optical axis.

[0131] In this embodiment, the optical imaging lens further includes a plurality of spacing elements: a first spacing element P1, located between the first lens E1 and the second lens E2 and in direct contact with the image side surface of the first lens E1; a second spacing element P2, located between the second lens E2 and the third lens E3 and in direct contact with the image side surface of the second lens E2; a third spacing element P3, located between the third lens E3 and the fourth lens E4 and in direct contact with the image side surface of the third lens E3; a fourth spacing element P4, located between the fourth lens E4 and the fifth lens E5 and in direct contact with the image side surface of the fourth lens E4; a fifth spacing element P5, located between the fourth lens E4 and the fifth lens E5 and in direct contact with the image side surface of the fourth lens E4; and a fifth spacing element P6, located between the fifth lens E5 and the fifth lens E6. The fifth auxiliary spacing element P5b is located between the fifth spacing element P5 and the sixth lens E6 and is in direct contact with the image side surface of the sixth lens E6; the sixth spacing element P6 is located between the sixth lens E6 and the seventh lens E7 and is in direct contact with the image side surface of the sixth lens E6; the sixth auxiliary spacing element P6b is located between the sixth spacing element P6 and the seventh lens E7 and is in direct contact with the object side surface of the seventh lens E7; and the seventh spacing element P7 is located on the image side of the seventh lens E7 and is in direct contact with the image side surface of the seventh lens E7.

[0132] In this embodiment, the first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has negative focal power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has positive focal power, and its object side surface S5 is convex, and its image side surface S6 is convex. The fourth lens E4 has negative focal power, and its object side surface S7 is concave, and its image side surface S8 is concave. The fifth lens E5 has negative focal power, and its object side surface S9 is convex, and its image side surface S10 is concave. The sixth lens E6 has positive focal power, and its object side surface S11 is convex, and its image side surface S12 is convex. The seventh lens E7 has negative focal power, and its object side surface S13 is concave, and its image side surface S14 is concave.

[0133] In this embodiment, the optical imaging lens may further include, for example, a filter (not shown in the figure) located on the image side of the seventh lens E7, having an object-side surface S15 and an image-side surface S16, and an imaging surface S17 (not shown in the figure) located on the image side of the filter. Light from the object may, for example, sequentially pass through the surfaces S1 to S16 and finally be imaged on the imaging surface S17.

[0134] Table 6 shows basic parameters of the optical imaging lens of Example 5, wherein the units of the radius of curvature and thickness / distance are all millimeters (mm).

[0135]

[0136]

[0137] Table 6

[0138] In this embodiment, the object side surface and the image side surface of any lens of the first lens E1 to the seventh lens E7 are both aspherical surfaces, and the surface shape of each aspherical surface can be defined by the formula (1) given in the above embodiment 1. Tables 7-1 and 7-2 show the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50 10 , A 12 , A 14 , A 16 , A 18 , A 20 , A 22 , A 24 , A 26 , A 28 , A 30 .

[0139] Face number A4 A6 A8 A10 A12 A14 A16 S1 -1.2660E-02 -5.7329E-03 -2.1299E-03 -7.1043E-04 -3.8224E-05 2.0466E-04 1.7314E-04 S2 -1.0600E-03 4.8922E-03 -3.0842E-04 -7.2973E-04 -3.4244E-04 -7.6581E-05 1.1330E-05 S3 1.8615E-02 2.0240E-02 -2.5540E-03 -1.9763E-03 -4.7202E-04 1.7285E-04 1.8424E-04 S4 3.6552E-02 2.7032E-03 -4.8147E-03 -1.8427E-03 -4.8096E-04 9.2854E-05 2.0113E-04 S5 1.1936E-01 1.5647E-02 2.0965E-03 3.3682E-04 -9.3643E-05 -1.1518E-04 -1.1067E-04 S6 3.6189E-02 1.9441E-02 5.9744E-03 1.8629E-03 6.5960E-04 2.1817E-04 5.5602E-05 S7 -3.1534E-01 -1.9083E-02 -1.7074E-03 -4.5621E-04 -4.7011E-04 -2.0107E-04 -1.4437E-04 S8 -3.7858E-01 1.7806E-02 1.4892E-02 7.9540E-03 2.6248E-03 1.0695E-03 1.1234E-04 S9 -1.0260E+00 7.5631E-02 -3.2155E-02 1.1821E-02 -5.1545E-04 4.3481E-03 -6.9072E-04 S10 -1.3416E+00 2.7054E-01 -2.5034E-02 -6.4594E-03 -1.2787E-02 1.8461E-03 1.7450E-03 S11 -2.0317E+00 1.2982E-01 1.5880E-01 -2.5668E-02 -3.0856E-02 4.4411E-04 6.3589E-03 S12 1.2826E+00 -1.9855E-01 1.3918E-01 -5.3983E-02 1.6031E-02 1.0902E-02 -6.5559E-03 S13 -2.0010E-01 7.9168E-01 -4.2156E-01 1.8190E-01 -5.6201E-02 5.5347E-03 2.4140E-03 S14 -6.5112E+00 1.1432E+00 -2.3681E-01 1.7721E-01 -5.3239E-02 9.6825E-03 -9.9988E-03

[0140] Table 7-1

[0141] Face number A18 A20 A22 A24 A26 A28 A30 S1 7.7785E-05 1.5669E-05 7.2290E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 1.4444E-05 6.4867E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 7.1998E-05 1.2957E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 1.1319E-04 3.7515E-05 1.0332E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 -5.2408E-05 -3.0618E-05 -5.1056E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 4.2459E-06 1.0011E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 -7.7462E-05 -4.3213E-05 -1.6611E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S8 -8.4262E-05 -9.2969E-05 -4.3240E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S9 -1.0799E-03 -6.7213E-04 -3.4220E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S10 9.8076E-04 -1.5898E-04 -6.0692E-06 -3.5303E-07 0.0000E+00 0.0000E+00 0.0000E+00 S11 4.4502E-03 9.7986E-05 -1.6161E-03 -1.0734E-03 -2.5852E-04 -8.4243E-06 0.0000E+00 S12 5.6615E-04 1.5196E-03 8.3684E-05 8.7100E-06 1.3343E-06 0.0000E+00 0.0000E+00 S13 -1.7369E-03 2.3604E-04 6.5540E-06 2.2832E-07 -2.6156E-09 0.0000E+00 0.0000E+00 S14 1.3002E-03 -2.4043E-03 -7.5889E-05 -3.2628E-06 -1.0643E-07 4.1123E-09 0.0000E+00

[0142] Table 7-2

[0143] Example 6

[0144] The following reference Fig.15 An optical imaging lens according to Example 6 of the present application is described.

[0145] like Fig.15As shown, in this embodiment, similar to Embodiment 5, the optical imaging lens also includes a lens barrel and a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6 and a seventh lens E7 contained in the lens barrel and arranged in sequence from the object side to the image side along the optical axis. The optical imaging lens also includes a plurality of spacing elements: a first spacing element P1, located between the first lens E1 and the second lens E2 and in direct contact with the image side surface of the first lens E1; a second spacing element P2, located between the second lens E2 and the third lens E3 and in direct contact with the image side surface of the second lens E2; a third spacing element P3, located between the third lens E3 and the fourth lens E4 and in direct contact with the image side surface of the third lens E3; a fourth spacing element P4, located between the fourth lens E4 and the fifth lens E5 and in direct contact with the image side surface of the fourth lens E4; a fifth spacing element P5, located between the fifth lens E4 and the fifth lens E5 and in direct contact with the image side surface of the fourth lens E4; 5 and the sixth lens E6 and in direct contact with the image-side surface of the fifth lens E5; a fifth auxiliary spacing element P5b is located between the fifth spacing element P5 and the sixth lens E6 and in direct contact with the object-side surface of the sixth lens E6; the sixth spacing element P6 is located between the sixth lens E6 and the seventh lens E7 and in direct contact with the image-side surface of the sixth lens E6; the sixth auxiliary spacing element P6b is located between the sixth spacing element P6 and the seventh lens E7 and in direct contact with the object-side surface of the seventh lens E7; and the seventh spacing element P7 is located on the image side of the seventh lens E7 and in direct contact with the image-side surface of the seventh lens E7.

[0146] In addition, the basic parameter table of the optical imaging lens of this embodiment is the same as Table 6, and the high-order coefficient table of the aspherical mirror surface is the same as Table 7-1 and Table 7-2.

[0147] The difference between this embodiment and embodiment 5 is that the values ​​of all or part of the relevant parameters shown in Table 10 are different, and the values ​​of the parameters in this embodiment are shown in the 'Example 6' column in Table 10. The specific description of the meaning represented by each parameter is the same as that in the above embodiment 1, and will not be repeated here.

[0148] Fig.16 The axial chromatic aberration curves of the optical imaging lenses of Examples 5 and 6 are shown, which indicate the deviation of the convergent focus of light rays of different wavelengths passing through the lens. Fig.17 Astigmatism curves of the optical imaging lenses of Examples 5 and 6 are shown, which represent meridional image curvature and sagittal image curvature. Fig.18 The distortion curves of the optical imaging lenses of Example 5 and Example 6 are shown, which represent the distortion magnitude values ​​corresponding to different image heights. Fig.19 The magnification chromatic aberration curves of Example 5 and Example 6 are shown, which represent the deviations of different image heights on the imaging surface after the light passes through the lens. Figures 16 to 19It can be seen that the optical imaging lenses provided in Examples 5 and 6 can achieve good imaging quality.

[0149] Example 7

[0150] The following reference Fig. 20 An optical imaging lens according to Embodiment 7 of the present application is described.

[0151] like Fig. 20 As shown, in this embodiment, the optical imaging lens comprises a lens barrel and a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6 and a seventh lens accommodated in the lens barrel and arranged in sequence from the object side to the image side along the optical axis.

[0152] In this embodiment, the optical imaging lens further includes a plurality of spacing elements: a first spacing element P1, located between the first lens E1 and the second lens E2 and in direct contact with the image side surface of the first lens E1; a second spacing element P2, located between the second lens E2 and the third lens E3 and in direct contact with the image side surface of the second lens E2; a third spacing element P3, located between the third lens E3 and the fourth lens E4 and in direct contact with the image side surface of the third lens E3; a fourth spacing element P4, located between the fourth lens E4 and the fifth lens E5 and in direct contact with the image side surface of the fourth lens E4; a fifth spacing element P5, located between the fourth lens E4 and the fifth lens E5 and in direct contact with the image side surface of the fourth lens E4; and a fifth spacing element P6, located between the fifth lens E5 and the fifth lens E6. The fifth auxiliary spacing element P5b is located between the fifth spacing element P5 and the sixth lens E6 and is in direct contact with the image side surface of the sixth lens E6; the sixth spacing element P6 is located between the sixth lens E6 and the seventh lens E7 and is in direct contact with the image side surface of the sixth lens E6; the sixth auxiliary spacing element P6b is located between the sixth spacing element P6 and the seventh lens E7 and is in direct contact with the object side surface of the seventh lens E7; and the seventh spacing element P7 is located on the image side of the seventh lens E7 and is in direct contact with the image side surface of the seventh lens E7.

[0153] In this embodiment, the first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has negative focal power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has positive focal power, and its object side surface S5 is convex, and its image side surface S6 is convex. The fourth lens E4 has negative focal power, and its object side surface S7 is concave, and its image side surface S8 is concave. The fifth lens E5 has negative focal power, and its object side surface S9 is convex, and its image side surface S10 is concave. The sixth lens E6 has positive focal power, and its object side surface S11 is convex, and its image side surface S12 is convex. The seventh lens E7 has negative focal power, and its object side surface S13 is concave, and its image side surface S14 is concave.

[0154] In this embodiment, the optical imaging lens may further include, for example, a filter (not shown in the figure) located on the image side of the seventh lens E7, having an object-side surface S15 and an image-side surface S16, and an imaging surface S17 (not shown in the figure) located on the image side of the filter. Light from the object may, for example, sequentially pass through the surfaces S1 to S16 and finally be imaged on the imaging surface S17.

[0155] Table 8 shows basic parameters of the optical imaging lens of Example 7, wherein the units of the radius of curvature and thickness / distance are all millimeters (mm).

[0156]

[0157] Table 8

[0158] In this embodiment, the object side surface and the image side surface of any lens of the first lens E1 to the seventh lens E7 are both aspherical surfaces, and the surface shape of each aspherical surface can be defined by the formula (1) given in the above embodiment 1. Tables 9-1 and 9-2 show the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A56, A57, A58, A59, A60, A61, A71, A72, A73, A74, A75 10 , A 12 , A 14 , A 16 , A 18 , A 20 , A 22 , A 24 , A 26 , A 28 , A 30 .

[0159]

[0160]

[0161] Table 9-1

[0162] Face number A18 A20 A22 A24 A26 A28 A30 S1 6.0662E-05 1.3253E-05 5.7425E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 2.3093E-05 6.6650E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 6.5276E-05 1.6025E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 9.1136E-05 3.3860E-05 8.4767E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 -1.8893E-05 -7.3765E-06 -1.2202E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 3.8930E-06 -7.3003E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 6.2674E-05 1.8215E-05 1.2604E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S8 -2.4781E-05 -6.9152E-05 -3.3819E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S9 -1.0327E-04 -2.8600E-04 -1.3840E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S10 7.5175E-04 -2.2391E-04 -8.0416E-06 -4.2489E-07 0.0000E+00 0.0000E+00 0.0000E+00 S11 2.7249E-03 -8.4288E-04 -1.1130E-03 -4.0995E-04 7.5791E-05 1.6541E-06 0.0000E+00 S12 1.2017E-03 3.1360E-04 1.0220E-05 4.8421E-07 2.3849E-08 0.0000E+00 0.0000E+00 S13 -2.3817E-03 -4.4984E-05 -4.6210E-06 -4.4777E-07 -4.6257E-08 0.0000E+00 0.0000E+00 S14 -4.8745E-04 -2.8855E-04 -9.1565E-06 -9.5141E-08 6.4798E-08 1.3682E-08 0.0000E+00

[0163] Table 9-2

[0164] Referring to Table 10, the values ​​of the relevant parameters in this embodiment are shown in the 'Embodiment 7' column in Table 10, wherein the specific description of the meaning represented by each parameter is the same as that in the above-mentioned Embodiment 1, and will not be repeated here.

[0165] Example 8

[0166] The following reference Fig.21 An optical imaging lens according to Example 8 of the present application is described.

[0167] like Fig.21As shown, in this embodiment, similar to Embodiment 7, the optical imaging lens also includes a lens barrel and a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6 and a seventh lens E7 contained in the lens barrel and arranged in sequence from the object side to the image side along the optical axis. The optical imaging lens also includes a plurality of spacing elements: a first spacing element P1, located between the first lens E1 and the second lens E2 and in direct contact with the image side surface of the first lens E1; a second spacing element P2, located between the second lens E2 and the third lens E3 and in direct contact with the image side surface of the second lens E2; a third spacing element P3, located between the third lens E3 and the fourth lens E4 and in direct contact with the image side surface of the third lens E3; a fourth spacing element P4, located between the fourth lens E4 and the fifth lens E5 and in direct contact with the image side surface of the fourth lens E4; a fifth spacing element P5, located between the fifth lens E4 and the fifth lens E5 and in direct contact with the image side surface of the fourth lens E4; 5 and the sixth lens E6 and in direct contact with the image-side surface of the fifth lens E5; a fifth auxiliary spacing element P5b is located between the fifth spacing element P5 and the sixth lens E6 and in direct contact with the object-side surface of the sixth lens E6; the sixth spacing element P6 is located between the sixth lens E6 and the seventh lens E7 and in direct contact with the image-side surface of the sixth lens E6; the sixth auxiliary spacing element P6b is located between the sixth spacing element P6 and the seventh lens E7 and in direct contact with the object-side surface of the seventh lens E7; and the seventh spacing element P7 is located on the image side of the seventh lens E7 and in direct contact with the image-side surface of the seventh lens E7.

[0168] In addition, the basic parameter table of the optical imaging lens of this embodiment is the same as Table 8, and the high-order coefficient table of the aspherical mirror surface is the same as Table 9-1 and Table 9-2.

[0169] The difference between this embodiment and embodiment 7 is that the values ​​of all or part of the relevant parameters shown in Table 10 are different, and the values ​​of the parameters in this embodiment are shown in the 'Example 8' column in Table 10. The specific description of the meaning represented by each parameter is the same as that in the above embodiment 1, and will not be repeated here.

[0170] Fig. 22 The axial chromatic aberration curves of the optical imaging lenses of Examples 7 and 8 are shown, which indicate the deviation of the convergent focus of light rays of different wavelengths passing through the back of the lens. Fig.23 Astigmatism curves of the optical imaging lenses of Examples 7 and 8 are shown, which represent meridional image curvature and sagittal image curvature. Fig.24 The distortion curves of the optical imaging lenses of Example 7 and Example 8 are shown, which represent the distortion magnitude values ​​corresponding to different image heights. Fig.25 The magnification chromatic aberration curves of Example 7 and Example 8 are shown, which represent the deviations of different image heights on the imaging surface after the light passes through the lens. Figure 22 to Figure 25It can be seen that the optical imaging lenses provided in Examples 7 and 8 can achieve good imaging quality.

[0171] Parameters / Examples 1 2 3 4 5 6 7 8 d1s(mm) 2.827 2.750 2.687 2.960 2.713 2.818 2.654 2.947 d1m(mm) 2.827 2.750 2.687 2.960 2.713 2.818 2.654 2.947 D1s(mm) 3.877 4.838 4.029 3.683 3.763 4.723 3.574 3.999 d2s(mm) 2.746 2.672 2.719 2.899 2.674 2.569 2.706 2.769 d2m(mm) 2.746 2.672 2.719 2.899 2.674 2.569 2.706 2.769 D2s(mm) 5.037 3.792 4.837 5.237 4.923 4.057 5.103 4.937 D2m(mm) 5.037 3.792 4.837 5.237 4.923 4.057 5.103 4.937 d3s(mm) 2.798 2.742 2.977 2.765 2.795 2.607 2.851 2.854 D3s(mm) 5.337 4.080 5.139 5.637 5.223 4.005 5.431 5.243 d4s(mm) 3.556 3.472 3.294 3.163 3.565 2.948 3.656 3.406 D4m(mm) 5.737 5.538 5.453 6.780 5.623 5.912 5.906 5.964 d5s(mm) 4.917 4.650 4.760 4.298 5.066 4.803 4.987 5.160 D5s(mm) 5.435 7.040 5.976 6.170 5.321 6.003 5.418 6.200 D5m(mm) 7.214 7.648 6.891 6.555 7.161 7.099 7.082 7.016 d6s(mm) 5.996 6.880 6.652 6.346 7.336 7.110 7.607 7.493 d6m(mm) 9.460 9.208 9.460 9.068 9.646 9.646 9.751 9.599 D6s(mm) 8.584 9.460 8.289 7.569 9.196 10.415 8.932 8.603 D6m(mm) 10.225 10.686 10.754 9.926 10.517 10.517 10.317 10.416 EP01(mm) 0.715 0.747 0.673 0.761 0.693 0.733 0.571 0.737 EP12(mm) 0.421 0.370 0.471 0.382 0.435 0.358 0.470 0.446 EP23(mm) 0.411 0.427 0.418 0.394 0.284 0.317 0.339 0.335 EP45(mm) 0.394 0.352 0.439 0.532 0.362 0.315 0.435 0.445 EP56(mm) 0.399 0.361 0.380 0.430 0.480 0.371 0.463 0.495 CP2(mm) 0.018 0.020 0.022 0.024 0.026 0.028 0.030 0.034 CP3(mm) 0.018 0.020 0.022 0.024 0.026 0.028 0.030 0.032 CP4(mm) 0.019 0.020 0.022 0.024 0.026 0.028 0.030 0.032 CP6(mm) 0.833 0.891 0.855 0.748 0.782 0.760 0.750 0.740

[0172] Table 10

[0173] In addition, in Examples 1 to 8, the effective focal length f of the optical imaging lens, the effective focal lengths f1-f7 of each of the first to seventh lenses, the combined focal length f12 of the first lens and the second lens, and the combined focal length f45 of the fourth lens and the fifth lens are respectively as shown in Table 11 below.

[0174]

[0175]

[0176] Table 11

[0177] Examples 1 to 8 respectively satisfy the conditions shown in Table 12 below.

[0178] Conditional / Example 1 2 3 4 5 6 7 8 (EP01-CT1)×V1 / f1 1.84 2.04 1.41 1.98 1.62 1.86 0.76 1.84 (R2-R1)×N1 / d1s 1.60 1.64 1.71 1.55 1.57 1.51 1.90 1.71 |f2 / f1| / (D1s / D2s) 2.50 1.51 2.31 2.73 2.79 1.83 2.91 2.52 (T12+CT2+T23) / EP12 1.26 1.43 1.11 1.37 1.28 1.55 1.23 1.30 f12 / (D2m-d2m) 4.98 10.18 5.37 4.86 5.05 7.64 4.48 4.95 (R3×d1m) / (R4×d2s) 1.91 1.91 1.88 1.95 1.66 1.79 1.84 1.99 (EP12+EP23) / CT3 1.43 1.37 1.56 1.36 1.59 1.49 1.58 1.52 (T34+CP3) / (T23+CP2) 2.16 2.15 2.33 2.31 2.51 2.49 2.55 2.49 (V3×D3s) / (V2×D2s) 4.49 4.56 4.51 4.57 4.50 4.19 4.51 4.50 R5 / d3s 2.56 2.61 2.35 2.53 2.92 3.13 2.70 2.69 CT3 / (CT4+CT5+CP4) 1.05 1.04 0.91 0.90 0.69 0.69 0.60 0.60 (T45+T56) / EP45 2.52 2.82 2.07 1.71 2.51 2.89 1.98 1.94 f4 / d4s+f5 / d5s -24.16 -24.93 -21.64 -22.85 -14.30 -16.29 -12.84 -13.40 f45 / (D4m+D5m) -1.50 -1.47 -1.29 -1.19 -1.16 -1.14 -0.88 -0.88 (R9 / R10)×d5s / D5s 1.25 0.91 1.26 1.10 1.55 1.30 2.65 2.40 (T67+CT7) / CP6 2.67 2.50 2.95 3.37 2.42 2.49 2.50 2.54 R11 / (D6s-d6s) 1.47 1.47 2.12 2.83 3.28 1.84 2.70 3.22 (D6m-d6m) / R13 -0.29 -0.56 -0.53 -0.35 -0.10 -0.10 -0.25 -0.36 (V6-V5)×EP56 / CT6 17.41 15.75 15.82 17.89 13.81 10.68 13.33 14.26

[0179] Table 12

[0180] The present application also provides an imaging device, which is provided with an electronic photosensitive element for imaging, and the electronic photosensitive element can be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS). The imaging device can be an independent imaging device such as a digital camera, or an imaging module integrated in a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens described above.

[0181] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of protection involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the present application. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) to form a technical solution.

Claims

1. An optical imaging lens, characterized in that: The invention comprises a lens barrel and a lens group and a spacer element group contained in the lens barrel, wherein: The lens group includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens arranged in sequence from the object side to the image side along the optical axis; The spacer element group includes: a second spacer element located between the second lens and the third lens and in direct contact with the image side surface of the second lens; a third spacer element located between the third lens and the fourth lens and in direct contact with the image side surface of the third lens; The optical imaging lens meets the following requirements: 2.0<(T34+CP3) / (T23+CP2)<2.6 and 4.0<(V3×D3s) / (V2×D2s)<4.6, Among them, T34 is the air gap between the third lens and the fourth lens on the optical axis, CP3 is the maximum thickness of the third spacing element, T23 is the air gap between the second lens and the third lens on the optical axis, CP2 is the maximum thickness of the second spacing element, V3 is the Abbe number of the third lens, D3s is the outer diameter of the object side surface of the third spacing element, V2 is the Abbe number of the second lens, and D2s is the outer diameter of the object side surface of the second spacing element.

2. The optical imaging lens according to claim 1, wherein: The spacer element group further includes: a first spacer element, located between the first lens and the second lens and in direct contact with the image side surface of the first lens; The distance EP01 from the object side end surface of the lens barrel to the object side surface of the first spacer element on the optical axis, the center thickness CT1 of the first lens on the optical axis, the Abbe number V1 of the first lens and the effective focal length f1 of the first lens satisfy: 0.7<(EP01-CT1)×V1 / f1<2.

1.

3. The optical imaging lens according to claim 1, wherein: The spacer element group further includes: a first spacer element, located between the first lens and the second lens and in direct contact with the image side surface of the first lens; The curvature radius R2 of the image side surface of the first lens, the curvature radius R1 of the object side surface of the first lens, the refractive index N1 of the first lens, and the inner diameter d1s of the object side surface of the first spacer element satisfy: 1.5<(R2-R1)×N1 / d1s<2.

0.

4. The optical imaging lens according to claim 1, wherein: The spacer element group further includes: a first spacer element, located between the first lens and the second lens and in direct contact with the image side surface of the first lens; The effective focal length f2 of the second lens, the effective focal length f1 of the first lens, the outer diameter D1s of the object-side surface of the first spacing element, and the outer diameter D2s of the object-side surface of the second spacing element satisfy: 1.5<|f2 / f1| / (D1s / D2s)<3.

0.

5. The optical imaging lens according to claim 1, wherein: The spacer element group further includes: a first spacer element, located between the first lens and the second lens and in direct contact with the image side surface of the first lens; The air interval T12 between the first lens and the second lens on the optical axis, the center thickness CT2 of the second lens on the optical axis, the air interval T23 between the second lens and the third lens on the optical axis, and the distance EP12 from the image side surface of the first spacing element to the object side surface of the second spacing element on the optical axis satisfy: 1.0<(T12+CT2+T23) / EP12<1.

6.

6. The optical imaging lens according to claim 1, wherein: The combined focal length f12 of the first lens and the second lens, the outer diameter D2m of the image side surface of the second spacer element, and the inner diameter d2m of the image side surface of the second spacer element satisfy: 4.4<f12 / (D2m-d2m)<10.

2.

7. The optical imaging lens according to claim 1, wherein: The spacer element group further includes: a first spacer element, located between the first lens and the second lens and in direct contact with the image side surface of the first lens; The curvature radius R3 of the object side surface of the second lens, the inner diameter d1m of the image side surface of the first spacing element, the curvature radius R4 of the image side surface of the second lens and the inner diameter d2s of the object side surface of the second spacing element satisfy: 1.6<(R3×d1m) / (R4×d2s)<2.

0.

8. The optical imaging lens according to claim 1, wherein: The spacer element group further includes: a first spacer element, located between the first lens and the second lens and in direct contact with the image side surface of the first lens; The distance EP12 from the image side surface of the first spacer element to the object side surface of the second spacer element on the optical axis, the distance EP23 from the image side surface of the second spacer element to the object side surface of the third spacer element on the optical axis, and the center thickness CT3 of the third lens on the optical axis satisfy: 1.3<(EP12+EP23) / CT3<1.

6.

9. The optical imaging lens according to claim 1, wherein: The curvature radius R5 of the object side surface of the third lens and the inner diameter d3s of the object side surface of the third spacer element satisfy: 2.3<R5 / d3s<3.

2.

10. The optical imaging lens according to any one of claims 1 to 9, characterized in that: The spacer element group further includes: a fourth spacer element, located between the fourth lens and the fifth lens and in direct contact with the image side surface of the fourth lens; The center thickness CT3 of the third lens on the optical axis, the center thickness CT4 of the fourth lens on the optical axis, the center thickness CT5 of the fifth lens on the optical axis and the maximum thickness CP4 of the fourth spacer element satisfy: 0.5<CT3 / (CT4+CT5+CP4)<1.

1.

11. The optical imaging lens according to any one of claims 1 to 9, characterized in that: The spacer element group further includes: a fourth spacer element located between the fourth lens and the fifth lens and in direct contact with the image side surface of the fourth lens; and a fifth spacer element located between the fifth lens and the sixth lens and in direct contact with the image side surface of the fifth lens; The air interval T45 between the fourth lens and the fifth lens on the optical axis, the air interval T56 between the fifth lens and the sixth lens on the optical axis, and the distance EP45 from the image side surface of the fourth spacing element to the object side surface of the fifth spacing element on the optical axis satisfy: 1.7<(T45+T56) / EP45<2.

9.

12. The optical imaging lens according to any one of claims 1 to 9, characterized in that: The spacer element group further includes: a fourth spacer element located between the fourth lens and the fifth lens and in direct contact with the image side surface of the fourth lens; and a fifth spacer element located between the fifth lens and the sixth lens and in direct contact with the image side surface of the fifth lens; The effective focal length f4 of the fourth lens, the inner diameter d4s of the object side surface of the fourth spacing element, the effective focal length f5 of the fifth lens and the inner diameter d5s of the object side surface of the fifth spacing element satisfy: -25.0<f4 / d4s+f5 / d5s<-12.

0.

13. The optical imaging lens according to any one of claims 1 to 9, characterized in that: The spacer element group further includes: a fourth spacer element located between the fourth lens and the fifth lens and in direct contact with the image side surface of the fourth lens; and a fifth spacer element located between the fifth lens and the sixth lens and in direct contact with the image side surface of the fifth lens; The combined focal length f45 of the fourth lens and the fifth lens, the outer diameter D4m of the image side surface of the fourth spacing element, and the outer diameter D5m of the image side surface of the fifth spacing element satisfy: -1.6<f45 / (D4m+D5m)<-0.

8.

14. The optical imaging lens according to any one of claims 1 to 9, characterized in that: The spacer element group further includes: a fifth spacer element, located between the fifth lens and the sixth lens and in direct contact with the image side surface of the fifth lens; The curvature radius R9 of the object side surface of the fifth lens, the curvature radius R10 of the image side surface of the fifth lens, the inner diameter d5s of the object side surface of the fifth spacer element, and the outer diameter D5s of the object side surface of the fifth spacer element satisfy: 0.9<(R9 / R10)×d5s / D5s<2.

7.

15. The optical imaging lens according to any one of claims 1 to 9, characterized in that: The spacer element group further includes: a sixth spacer element, located between the sixth lens and the seventh lens and in direct contact with the image side surface of the sixth lens; The air interval T67 between the sixth lens and the seventh lens on the optical axis, the center thickness CT7 of the seventh lens on the optical axis and the maximum thickness CP6 of the sixth spacing element satisfy: 2.4<(T67+CT7) / CP6<3.

4.

16. The optical imaging lens according to any one of claims 1 to 9, characterized in that: The spacer element group further includes: a sixth spacer element, located between the sixth lens and the seventh lens and in direct contact with the image side surface of the sixth lens; The curvature radius R11 of the object side surface of the sixth lens, the outer diameter D6s of the object side surface of the sixth spacing element, and the inner diameter d6s of the object side surface of the sixth spacing element satisfy: 1.4<R11 / (D6s-d6s)<3.

3.

17. The optical imaging lens according to any one of claims 1 to 9, characterized in that: The spacer element group further includes: a sixth spacer element, located between the sixth lens and the seventh lens and in direct contact with the image side surface of the sixth lens; The outer diameter D6m of the image side surface of the sixth spacer element, the inner diameter d6m of the image side surface of the sixth spacer element, and the curvature radius R13 of the object side surface of the seventh lens satisfy: -0.6<(D6m-d6m) / R13<0.

18. The optical imaging lens according to any one of claims 1 to 9, characterized in that: The spacer element group further includes: a fifth spacer element located between the fifth lens and the sixth lens and in direct contact with the image side surface of the fifth lens; and a sixth spacer element located between the sixth lens and the seventh lens and in direct contact with the image side surface of the sixth lens; The Abbe number V6 of the sixth lens, the Abbe number V5 of the fifth lens, the distance EP56 from the image side surface of the fifth spacer element to the object side surface of the sixth spacer element on the optical axis, and the center thickness CT6 of the sixth lens on the optical axis satisfy: 10.5<(V6-V5)×EP56 / CT6<17.9.

Images