CN113835196B

CN113835196B - Optical imaging lens

Info

Publication number: CN113835196B
Application number: CN202111150708.1A
Authority: CN
Inventors: 李林阳; 何旦; 徐鑫垚; 吕赛锋; 戴付建; 赵烈烽
Original assignee: Zhejiang Sunny Optics Co Ltd
Current assignee: Zhejiang Sunny Optics Co Ltd
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2023-08-08
Anticipated expiration: 2041-09-29
Also published as: CN113835196A

Abstract

The application discloses optical imaging lens, along the optical axis from the object side to the image side in proper order include: a first lens having optical power; a second lens having optical power; a third lens having positive optical power; a fourth lens having negative optical power; a fifth lens having optical power; a sixth lens having optical power; a seventh lens having optical power. The effective focal length F of the optical imaging lens, the F number FNo of the optical imaging lens and the maximum field angle FOV of the optical imaging lens satisfy the following conditions: f/(FNo×tan (FOV)) > 15mm.

Description

Optical imaging lens

Technical Field

The present application relates to the field of optical elements, and more particularly, to an optical imaging lens.

Background

With the popularization of electronic products such as smart phones, unmanned aerial vehicles, monitoring probes and the like, optical imaging lenses have been greatly developed. The optical imaging lens of the unmanned plane and the monitoring probe has great requirements for high-quality imaging of remote scenes, and meanwhile, the performance of the image sensor is continuously improved to meet the requirements for high-quality imaging. Therefore, the development of the current market increasingly needs an optical pick-up lens with the characteristics of long focus, large aperture, good imaging quality and the like, so that the system can better and clearly image far scenes, and is better suitable for electronic products with requirements for the telephoto lens.

Disclosure of Invention

An aspect of the present application provides an optical imaging lens, including, in order from an object side to an image side along an optical axis: a first lens having optical power; a second lens having optical power; a third lens having positive optical power; a fourth lens having negative optical power; a fifth lens having optical power; a sixth lens having optical power; a seventh lens having optical power. The effective focal length F of the optical imaging lens, the F number Fno of the optical imaging lens and the maximum field angle FOV of the optical imaging lens can satisfy: f/(FNo×tan (FOV)) > 15mm.

In one embodiment, the F-number Fno of the optical imaging lens and the maximum field angle FOV of the optical imaging lens may satisfy: fno/Tan (FOV/2) < 9.

In one embodiment, the effective focal length f of the optical imaging lens and the effective focal length f4 of the fourth lens may satisfy: -3.5 < f/f4 < 3.0.

In one embodiment, the effective focal length f of the optical imaging lens and the effective focal length f6 of the sixth lens may satisfy: -3.0 < f/f6 < -1.0.

In one embodiment, the combined focal length f1234 of the first, second, third, and fourth lenses and the effective focal length f of the optical imaging lens may satisfy: f1234/f is more than 0.9 and less than or equal to 1.5.

In one embodiment, the effective focal length f5 of the fifth lens and the combined focal length f67 of the sixth lens and the seventh lens may satisfy: -f 5/f67 is less than or equal to-0.5 and less than or equal to-1.0.

In one embodiment, an average value AVE (DT 14) of the maximum effective radii of the first to fourth lenses and an average value AVE (DT 57) of the maximum effective radii of the fifth to seventh lenses may satisfy: 1.2 < AVE (DT 14)/AVE (DT 57) < 1.6.

In one embodiment, the maximum effective radius DT11 of the object side surface of the first lens and the maximum effective radius DT72 of the image side surface of the seventh lens may satisfy: DT11/DT72 is 1.2 < 1.6.

In one embodiment, an average value AVE (DT 67) of maximum effective radii of the sixth lens to the seventh lens and a maximum effective radius DT51 of an object side surface of the fifth lens may satisfy: 0.9 < AVE (DT 67)/DT 51 < 1.2.

In one embodiment, the refractive index N4 of the fourth lens, the refractive index N5 of the fifth lens, and the refractive index N6 of the sixth lens may satisfy: (N4+N5+N6)/3 is less than or equal to 1.7 and less than 1.8.

In one embodiment, the abbe number V1 of the first lens, the abbe number V2 of the second lens, and the abbe number V3 of the third lens may satisfy: 60 < (V1+V2+V3)/3 < 70.

In one embodiment, the refractive index N1 of the first lens, the refractive index N2 of the second lens, and the refractive index N3 of the third lens may satisfy: 10 x (N1- (N2 + N3)/2) is less than or equal to 1.0.

In one embodiment, a sum Σat of a separation distance T45 of the fourth lens and the fifth lens on the optical axis, a separation distance T56 of the fifth lens and the sixth lens on the optical axis, and a separation distance of any adjacent two lenses of the first lens to the seventh lens on the optical axis may satisfy: 0.8 < (T45+T56)/(Sigma AT < 1.0).

In one embodiment, a separation distance T45 of the fourth lens and the fifth lens on the optical axis and a separation distance T56 of the fifth lens and the sixth lens on the optical axis may satisfy: T45/T56 is more than 0.7 and less than 1.3.

In one embodiment, a sum Σct of a center thickness CT1 of the first lens on the optical axis, a center thickness CT3 of the third lens on the optical axis, a center thickness CT7 of the seventh lens on the optical axis, and center thicknesses Σct of the first lens to the seventh lens on the optical axis may satisfy: the (CT1+CT3+CT7) is more than or equal to 0.7, and the sigma CT is less than 0.9.

In one embodiment, a center thickness CT2 of the second lens on the optical axis, a center thickness CT4 of the fourth lens on the optical axis, and a center thickness CT6 of the sixth lens on the optical axis may satisfy: 0.9 < CT 2/(CT4+CT6) < 2.5.

In one embodiment, a center thickness CT3 of the third lens on the optical axis and a center thickness CT1 of the first lens on the optical axis may satisfy: CT3/CT1 is more than 1.0 and less than or equal to 1.7.

In one embodiment, the effective focal length f1 of the first lens, the effective focal length f3 of the third lens, and the effective focal length f5 of the fifth lens may satisfy: 3.5 < f1/f3+f5/f3 < 5.0.

Another aspect of the present application provides an optical imaging lens, sequentially including, from an object side to an image side along an optical axis: a first lens having optical power; a second lens having optical power; a third lens having positive optical power; a fourth lens having negative optical power; a fifth lens having optical power; a sixth lens having optical power; a seventh lens having optical power. The F number FNo of the optical imaging lens and the maximum field angle FOV of the optical imaging lens can meet the following conditions: fno/Tan (FOV/2) < 9.

In one embodiment, the effective focal length F of the optical imaging lens, the F-number Fno of the optical imaging lens, and the maximum field angle FOV of the optical imaging lens may satisfy: f/(FNo×tan (FOV)) > 15mm.

The seven-lens structure is adopted, and the lens has at least one of the advantages of large aperture, long focal length, good imaging quality and the like by reasonably distributing the focal power of each lens, optimally selecting the surface type, thickness, refractive index and the like of each lens.

Drawings

Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments, taken in conjunction with the accompanying drawings. In the drawings:

fig. 1 shows a schematic configuration diagram of an optical imaging lens according to embodiment 1 of the present application;

fig. 2A to 2D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 1;

fig. 3 shows a schematic structural view of an optical imaging lens according to embodiment 2 of the present application;

fig. 4A to 4D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 2;

fig. 5 shows a schematic structural view of an optical imaging lens according to embodiment 3 of the present application;

fig. 6A to 6D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 3;

Fig. 7 shows a schematic structural diagram of an optical imaging lens according to embodiment 4 of the present application;

fig. 8A to 8D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 4;

fig. 9 shows a schematic structural view of an optical imaging lens according to embodiment 5 of the present application;

fig. 10A to 10D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 5;

fig. 11 shows a schematic structural view of an optical imaging lens according to embodiment 6 of the present application;

fig. 12A to 12D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 6;

fig. 13 shows a schematic structural view of an optical imaging lens according to embodiment 7 of the present application;

fig. 14A to 14D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 7;

fig. 15 shows a schematic structural view of an optical imaging lens according to embodiment 8 of the present application;

fig. 16A to 16D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 8;

Fig. 17 shows a schematic structural diagram of an optical imaging lens according to embodiment 9 of the present application; and

fig. 18A to 18D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical imaging lens of embodiment 9, respectively.

Detailed Description

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

It should be noted that in the present 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 feature. Accordingly, a first lens discussed below may also be referred to as a second lens or a third lens without departing from the teachings of the present application.

In the drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for convenience of explanation. In particular, the spherical or aspherical shape shown in the drawings is shown by way of example. That is, the shape of the spherical or aspherical surface is not limited to the shape of the spherical or aspherical surface shown in the drawings. The figures are merely examples and are not drawn to scale.

Herein, the paraxial region refers to a region near the optical axis. If the lens surface is convex and the convex position is not defined, then the lens surface is convex at least in the paraxial region; if the lens surface is concave and the concave position is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the subject is referred to herein as the object side of the lens, and the surface of each lens closest to the imaging plane is referred to as the image side of the lens.

It will be further understood that the terms "comprises," "comprising," "includes," "including," "having," "containing," and/or "including," when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof. Furthermore, when a statement such as "at least one of the following" appears after a list of features that are listed, the entire listed feature is modified instead of modifying a separate element in the list. Furthermore, when describing embodiments of the present application, use of "may" means "one or more embodiments of the present application. Also, the term "exemplary" is intended to refer to an example or illustration.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

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

The optical imaging lens according to the exemplary embodiment of the present application may include, for example, seven lenses having optical power, i.e., a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The seven lenses are arranged in sequence from the object side to the image side along the optical axis.

In an exemplary embodiment, the first lens may have positive or negative optical power; the second lens may have positive or negative optical power; the third lens may have positive optical power; the fourth lens may have negative optical power; the fifth lens may have positive or negative optical power; the sixth lens may have positive or negative optical power; the seventh lens may have positive or negative optical power.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the condition that F/(fno×tan (FOV)) > 15mm, where F is an effective focal length of the optical imaging lens, fno is an F-number of the optical imaging lens, and FOV is a maximum field angle of the optical imaging lens. The aperture size and the field size of the system can be controlled by controlling the effective focal length of the optical imaging lens, the F number of the optical imaging lens and the maximum field angle of the optical imaging lens to satisfy F/(FNo×tan (FOV)) > 15mm, so that the characteristics of large aperture and high magnification of the system are realized. More specifically, f, fno, and FOV can satisfy f/(fno×tan (FOV)) > 16mm.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 5 < Fno/Tan (FOV/2) < 9, where Fno is the F-number of the optical imaging lens and FOV is the maximum field angle of the optical imaging lens. By controlling the ratio of the F-number of the optical imaging lens to the tangent of half of the maximum field angle of the optical imaging lens in this range, a balance of the system's imaging quality in the center field of view and the optical performance in the fringe field of view can be achieved. More specifically, FNO and FOV may satisfy 5 < FNO/Tan (FOV/2) < 8. Illustratively, FOV may satisfy 25 < FOV < 34, and FNo may satisfy FNo < 1.9.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression-3.5 < f/f4+.3.0, where f is an effective focal length of the optical imaging lens and f4 is an effective focal length of the fourth lens. By controlling the ratio of the effective focal length of the optical imaging lens to the effective focal length of the fourth lens in the range, the deflection angle of light rays can be reduced, and the imaging quality of the system can be improved. More specifically, f and f4 can satisfy-3.5 < f/f 4. Ltoreq.3.2.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression-3.0 < f/f6 < -1.0, where f is an effective focal length of the optical imaging lens and f6 is an effective focal length of the sixth lens. By controlling the ratio of the effective focal length of the optical imaging lens to the effective focal length of the sixth lens in the range, the total length of the system is smaller than the effective focal length, and the light deflection angle is balanced, so that the tele-tele lens is formed. More specifically, f and f6 may satisfy-2.6 < f/f6 < -1.1.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.9 < f 1234/f.ltoreq.1.5, where f1234 is a combined focal length of the first lens, the second lens, the third lens, and the fourth lens, and f is an effective focal length of the optical imaging lens. By controlling the ratio of the combined focal length of the first lens, the second lens, the third lens and the fourth lens to the effective focal length of the optical imaging lens in the range, the spherical aberration constraint of the first four lenses of the system can be realized in a reasonable range, and the imaging quality of the system is improved. More specifically, f1234 and f may satisfy 1.1 < f 1234/f.ltoreq.1.5.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression-1.0 < f 5/f67.ltoreq.0.5, where f5 is an effective focal length of the fifth lens and f67 is a combined focal length of the sixth lens and the seventh lens. By controlling the ratio of the effective focal length of the fifth lens to the combined focal length of the sixth lens and the seventh lens in this range, it is possible to facilitate balancing the off-axis aberration of the system. More specifically, f5 and f67 may satisfy-0.9 < f5/f 67.ltoreq.0.5.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.2 < AVE (DT 14)/AVE (DT 57) < 1.6, wherein AVE (DT 14) is an average value of maximum effective radii of the first to fourth lenses, and AVE (DT 57) is an average value of maximum effective radii of the fifth to seventh lenses. By controlling the ratio of the average value of the maximum effective radii of the first lens to the fourth lens to the average value of the maximum effective radii of the fifth lens to the seventh lens within this range, the system structure can be made more stable.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.2 < DT11/DT72 < 1.6, wherein DT11 is the maximum effective radius of the object side surface of the first lens and DT72 is the maximum effective radius of the image side surface of the seventh lens. By controlling the ratio of the maximum effective radius of the object side surface of the first lens to the maximum effective radius of the image side surface of the seventh lens in the range, the size of the field of view of the system can be controlled, so that the system can maintain good imaging quality.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.9 < AVE (DT 67)/DT 51 < 1.2, wherein AVE (DT 67) is an average value of maximum effective radii of the sixth lens to the seventh lens, and DT51 is a maximum effective radius of an object side surface of the fifth lens. By controlling the ratio of the average value of the maximum effective radius of the sixth lens to the seventh lens to the maximum effective radius of the object side surface of the fifth lens within this range, a reasonable positive astigmatism can be obtained, which counteracts the negative astigmatism generated by the previous system, and a good imaging quality can be obtained for the system.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.7+ (n4+n5+n6)/3 < 1.8, where N4 is the refractive index of the fourth lens, N5 is the refractive index of the fifth lens, and N6 is the refractive index of the sixth lens. The refractive index of the fourth lens, the refractive index of the fifth lens and the refractive index of the sixth lens are controlled to be more than or equal to 1.7 and less than or equal to (N4+N5+N6)/3 and less than 1.8, so that the curvatures of the lenses are controlled in a reasonable range, and the system has a stable structure.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 60 < (v1+v2+v3)/3 < 70, where V1 is the abbe number of the first lens, V2 is the abbe number of the second lens, and V3 is the abbe number of the third lens. By controlling the Abbe number of the first lens, the Abbe number of the second lens and the Abbe number of the third lens to be 60 < (V1 + V2+ V3)/3 < 70, the axial chromatic aberration of the first three lenses can be corrected, so that the system has good imaging quality. More specifically, V1, V2 and V3 may satisfy 64 < (V1+V2+V3)/3 < 65.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 10× (N1- (n2+n3)/2). Ltoreq.1.0, where N1 is the refractive index of the first lens, N2 is the refractive index of the second lens, and N3 is the refractive index of the third lens. The refractive index of the first lens, the refractive index of the second lens and the refractive index of the third lens are controlled to be 10 multiplied by (N1- (N2 + N3)/2) to be less than or equal to 1.0, so that chromatic aberration of an optical system can be reduced, and imaging quality can be improved. More specifically, N1, N2 and N3 may satisfy 10× (N1- (N2 +N 3)/2). Ltoreq.0.9.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the condition that (t45+t56)/(Σat < 1.0), where T45 is the distance between the fourth lens and the fifth lens on the optical axis, T56 is the distance between the fifth lens and the sixth lens on the optical axis, Σat is the sum of the distances between any adjacent two lenses of the first lens to the seventh lens on the optical axis. By controlling the ratio of the sum of the interval distance between the fourth lens and the fifth lens on the optical axis and the interval distance between the fifth lens and the sixth lens on the optical axis to the sum of the interval distances between any two adjacent lenses from the first lens to the seventh lens on the optical axis within the range, the distortion of the system can be reasonably controlled, and the system has good distortion performance.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.7 < T45/T56 < 1.3, where T45 is a separation distance of the fourth lens and the fifth lens on the optical axis, and T56 is a separation distance of the fifth lens and the sixth lens on the optical axis. By controlling the ratio of the interval distance between the fourth lens and the fifth lens on the optical axis to the interval distance between the fifth lens and the sixth lens on the optical axis within the range, the field curvature of the system can be effectively ensured, so that the off-axis view field of the system can obtain good imaging quality. More specifically, T45 and T56 may satisfy 0.8 < T45/T56 < 1.3.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.7+ (ct1+ct3+ct7)/Σct < 0.9, where CT1 is the center thickness of the first lens on the optical axis, CT3 is the center thickness of the third lens on the optical axis, CT7 is the center thickness of the seventh lens on the optical axis, Σct is the sum of the center thicknesses of the first to seventh lenses on the optical axis. By controlling the ratio of the center thickness of the first lens on the optical axis, the sum of the center thickness of the third lens on the optical axis and the center thickness of the seventh lens on the optical axis to the sum of the center thicknesses of the first lens to the seventh lens on the optical axis within this range, the center thicknesses of the three lenses of the first lens, the third lens and the seventh lens of the lens can be made to be within a reasonable range, so that the system has necessary structural strength. More specifically, CT1, CT3, CT7 and ΣCT can satisfy 0.7.ltoreq.Ct1+Ct3+Ct7)/ΣCT < 0.8.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.9 < CT 2/(CT 4+ct 6) < 2.5, where CT2 is the center thickness of the second lens on the optical axis, CT4 is the center thickness of the fourth lens on the optical axis, and CT6 is the center thickness of the sixth lens on the optical axis. The ratio of the center thickness of the second lens on the optical axis to the sum of the center thickness of the fourth lens on the optical axis and the center thickness of the sixth lens on the optical axis is controlled within the range, so that the negative focal power distribution of the system can be balanced, the off-axis aberration of the system can be effectively improved, and the overall image quality of the lens can be improved. More specifically, CT2, CT4, and CT6 may satisfy 0.9 < CT 2/(CT4+CT6) < 2.3.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.0 < CT3/CT 1+.1.7, where CT3 is the center thickness of the third lens on the optical axis and CT1 is the center thickness of the first lens on the optical axis. The distortion amount of the system can be reasonably regulated and controlled by controlling the ratio of the center thickness of the third lens on the optical axis to the center thickness of the first lens on the optical axis in the range, and finally the distortion of the system is in a certain range. More specifically, CT3 and CT1 may satisfy 1.1 < CT3/CT 1.ltoreq.1.7.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 3.5 < f1/f3+f5/f3 < 5.0, where f1 is an effective focal length of the first lens, f3 is an effective focal length of the third lens, and f5 is an effective focal length of the fifth lens. By controlling the effective focal length of the first lens, the effective focal length of the third lens and the effective focal length of the fifth lens to be 3.5 < f1/f3+f5/f3 < 5.0, the spherical aberration contribution of the first lens, the third lens and the fifth lens can be controlled within a reasonable level, so that the on-axis view field obtains good imaging quality. More specifically, f1, f3 and f5 may satisfy 3.6 < f1/f3+f5/f3 < 4.6.

In an exemplary embodiment, the effective focal length f of the optical imaging lens may be, for example, in the range of 17.0mm to 18.0mm, the effective focal length f1 of the first lens may be, for example, in the range of 13mm to 17mm, the effective focal length f2 of the second lens may be, for example, in the range of-374 mm to-175 mm, the effective focal length f3 of the third lens may be, for example, in the range of 8.5mm to 9.2mm, the effective focal length f4 of the fourth lens may be, for example, in the range of-5.7 mm to-5.0 mm, the effective focal length f5 of the fifth lens may be, for example, in the range of 16.1mm to 50.2mm, the effective focal length f6 of the sixth lens may be, for example, in the range of-15.0 mm to-6.5 mm, and the effective focal length f7 of the seventh lens may be, for example, in the range of 8.5mm to 39.0 mm.

In an exemplary embodiment, the optical imaging lens may further include at least one diaphragm. The diaphragm may be provided at an appropriate position as required, for example, between the object side and the first lens. 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.

The optical imaging lens according to the above-described embodiments of the present application may employ a plurality of lenses, such as seven lenses described above. The lens has the characteristics of large aperture, long focus, good imaging quality and the like by reasonably distributing the focal power, the surface shape, the material, the center thickness of each lens, the axial spacing between each lens and the like.

In the embodiments of the present application, at least one of the mirrors of the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element, the sixth lens element and the seventh lens element may have at least one aspherical mirror surface, i.e., at least one aspherical mirror surface may be included in the object-side surface of the first lens element to the image-side surface of the seventh lens element. The aspherical lens is characterized in that: the curvature varies continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has a better radius of curvature characteristic, and has advantages of improving distortion aberration and improving astigmatic aberration. By adopting the aspherical lens, aberration occurring during imaging can be eliminated as much as possible, thereby improving imaging quality. Optionally, at least one of an object side surface and an image side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens is an aspherical mirror surface. Optionally, the object side surface and the image side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens are aspherical mirror surfaces.

However, it will be appreciated by those skilled in the art that the number of lenses making up the optical imaging lens may be varied to achieve the various results and advantages described in the specification without departing from the technical solutions claimed herein. For example, although seven lenses are described as an example in the embodiment, the optical imaging lens is not limited to include seven lenses. The optical imaging lens may also include other numbers of lenses, if desired.

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

Example 1

An optical imaging lens according to embodiment 1 of the present application is described below with reference to fig. 1 to 2D. Fig. 1 shows a schematic configuration diagram of an optical imaging lens according to embodiment 1 of the present application.

As shown in fig. 1, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7 and filter E8.

The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is convex. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave, and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is concave. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave and an image-side surface S12 thereof is convex. The seventh lens element E7 has positive refractive power, wherein an object-side surface S13 thereof is concave, and an image-side surface S14 thereof is convex. The filter E8 has an object side surface S15 and an image side surface S16. The optical imaging lens has an imaging surface S17, and light from an object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.

Table 1 shows basic parameters of the optical imaging lens of embodiment 1, in which the unit of curvature radius and thickness/distance is millimeter (mm).

TABLE 1

In embodiment 1, the object side surface and the image side surface of any one of the first lens E1 to the seventh lens E7 are aspherical, and the surface profile x of each aspherical lens can be defined by, but not limited to, the following aspherical formula:

wherein x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at the position with the height h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c=1/R (i.e., paraxial curvature c is the inverse of radius of curvature R in table 1 above); k is a conic coefficient; ai is the correction coefficient of the aspherical i-th order. The following tables 2-1 and 2-2 give the higher order coefficients A that can be used for each of the aspherical mirror faces S1 to S14 in example 1 ₄ 、A ₆ 、A ₈ 、A ₁₀ 、A ₁₂ 、A ₁₄ 、A ₁₆ 、A ₁₈ 、A ₂₀ 、A ₂₂ 、A ₂₄ 、A ₂₆ And A ₂₈ 。

Face number

A4

A6

A8

A10

A12

A14

A16

S1

-3.5709E-04

9.9062E-06

-1.3072E-06

1.7849E-07

-9.1487E-09

2.0203E-10

-1.3238E-12

S2

2.5413E-04

-1.8340E-05

6.8991E-06

-7.4762E-07

3.6578E-08

-9.9091E-10

1.5993E-11

S3

5.6172E-03

-5.5265E-04

5.7542E-05

-4.6136E-06

2.2907E-07

-6.9621E-09

1.3052E-10

S4

4.0750E-03

-7.7060E-04

7.3834E-05

-4.2929E-06

1.6380E-07

-3.9756E-09

5.4411E-11

S5

-1.1926E-03

-3.2748E-04

9.9245E-05

-2.7795E-05

5.3647E-06

-6.8189E-07

5.9668E-08

S6

3.3181E-03

7.1933E-05

-7.5454E-05

8.2958E-06

-4.2568E-07

1.1621E-08

-1.6309E-10

S7

2.4052E-03

4.7297E-04

-1.2220E-04

1.2241E-05

-6.6152E-07

2.0227E-08

-3.2892E-10

S8

-2.9206E-03

8.6378E-04

-1.2219E-04

8.2350E-06

2.4922E-07

-7.4628E-08

4.2232E-09

S9

-1.3552E-03

-6.4187E-06

3.3807E-05

-1.0374E-05

1.8599E-06

-1.8863E-07

1.0211E-08

S10

1.1227E-17

-4.5882E-25

7.6509E-33

-7.2160E-41

4.1776E-49

-1.5129E-57

3.3407E-66

S11

-2.7492E-03

-1.8033E-04

9.7089E-05

-4.2531E-05

1.0903E-05

-1.7735E-06

1.7083E-07

S12

-1.3855E-06

-1.8954E-08

3.8954E-06

-4.0104E-07

-2.9921E-08

2.4357E-09

5.5536E-13

S13

3.6031E-06

7.9256E-08

1.9949E-09

-3.6103E-10

-4.0221E-11

-6.5955E-10

6.3473E-14

S14

-3.5823E-03

-1.1708E-04

9.2983E-05

-2.5607E-05

4.2504E-06

-4.3539E-07

2.6688E-08

TABLE 2-1

Face number

A18

A20

A22

A24

A26

A28

S1

-2.3216E-14

4.6606E-16

-2.4088E-18

0.0000E+00

S2

-1.5438E-13

8.2980E-16

-1.9271E-18

0.0000E+00

S3

-1.4721E-12

9.1168E-15

-2.3564E-17

0.0000E+00

S4

-3.1430E-13

0.0000E+00

S5

-3.6778E-09

1.5922E-10

-4.7195E-12

9.0785E-14

-1.0168E-15

5.0167E-18

S6

9.2610E-13

0.0000E+00

S7

2.2092E-12

0.0000E+00

S8

-7.8501E-11

0.0000E+00

S9

-2.2503E-10

0.0000E+00

S10

-4.1106E-75

2.1589E-84

0.0000E+00

S11

-8.8672E-09

1.9074E-10

0.0000E+00

S12

9.0656E-14

6.1380E-19

0.0000E+00

S13

5.0781E-14

-1.5248E-18

0.0000E+00

S14

-8.9291E-10

1.2484E-11

0.0000E+00

TABLE 2-2

Fig. 2A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 1, which indicates the focus deviation of light rays of different wavelengths after passing through the lens. Fig. 2B shows an astigmatism curve of the optical imaging lens of embodiment 1, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 2C shows a distortion curve of the optical imaging lens of embodiment 1, which represents distortion magnitude values corresponding to different image heights. Fig. 2D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 1, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 2A to 2D, the optical imaging lens provided in embodiment 1 can achieve good imaging quality.

Example 2

An optical imaging lens according to embodiment 2 of the present application is described below with reference to fig. 3 to 4D. In this embodiment and the following embodiments, descriptions of portions similar to embodiment 1 will be omitted for brevity. Fig. 3 shows a schematic structural diagram of an optical imaging lens according to embodiment 2 of the present application.

As shown in fig. 3, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7 and filter E8.

The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is convex. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave, and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is concave. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave, and an image-side surface S12 thereof is concave. The seventh lens element E7 has positive refractive power, wherein an object-side surface S13 thereof is convex, and an image-side surface S14 thereof is convex. The filter E8 has an object side surface S15 and an image side surface S16. The optical imaging lens has an imaging surface S17, and light from an object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.

Table 3 shows basic parameters of the optical imaging lens of embodiment 2, in which the unit of curvature radius and thickness/distance is millimeter (mm). Tables 4-1 and 4-2 show the higher order coefficients A that can be used for each of the aspherical mirror surfaces S1 to S14 in example 2 ₄ 、A ₆ 、A ₈ 、A ₁₀ 、A ₁₂ 、A ₁₄ 、A ₁₆ 、A ₁₈ 、A ₂₀ 、A ₂₂ 、A ₂₄ 、A ₂₆ And A ₂₈ Wherein each aspherical surface profile can be defined by the formula (1) given in the above-described embodiment 1.

TABLE 3 Table 3

TABLE 4-1

Face number

A18

A20

A22

A24

A26

A28

S1

7.6456E-13

-8.7677E-15

4.0244E-17

0.0000E+00

S2

9.9777E-13

-7.1734E-15

2.1779E-17

0.0000E+00

S3

5.8022E-12

-5.8726E-14

2.4515E-16

0.0000E+00

S4

-6.5822E-13

0.0000E+00

S5

-3.9568E-09

1.7647E-10

-5.3863E-12

1.0678E-13

-1.2342E-15

6.2919E-18

S6

-6.3354E-14

0.0000E+00

S7

9.8836E-13

0.0000E+00

S8

4.6396E-11

0.0000E+00

S9

-2.4714E-10

0.0000E+00

S10

-4.1106E-75

2.1589E-84

0.0000E+00

S11

-9.0303E-09

2.4919E-10

0.0000E+00

S12

9.0656E-14

6.1380E-19

0.0000E+00

S13

5.0781E-14

-1.5248E-18

0.0000E+00

S14

9.4416E-11

-7.6843E-13

0.0000E+00

TABLE 4-2

Fig. 4A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 2, which indicates the focus deviation of light rays of different wavelengths after passing through the lens. Fig. 4B shows an astigmatism curve of the optical imaging lens of embodiment 2, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 4C shows a distortion curve of the optical imaging lens of embodiment 2, which represents distortion magnitude values corresponding to different image heights. Fig. 4D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 2, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 4A to 4D, the optical imaging lens provided in embodiment 2 can achieve good imaging quality.

Example 3

An optical imaging lens according to embodiment 3 of the present application is described below with reference to fig. 5 to 6D. Fig. 5 shows a schematic structural diagram of an optical imaging lens according to embodiment 3 of the present application.

As shown in fig. 5, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7 and filter E8.

Table 5 shows basic parameters of the optical imaging lens of embodiment 3, in which the unit of curvature radius and thickness/distance is millimeter (mm). Tables 6-1 and 6-2 show the higher order term coefficients A that can be used for each of the aspherical mirror faces S1 to S14 in example 3 ₄ 、A ₆ 、A ₈ 、A ₁₀ 、A ₁₂ 、A ₁₄ 、A ₁₆ 、A ₁₈ 、A ₂₀ 、A ₂₂ 、A ₂₄ 、A ₂₆ And A ₂₈ Wherein each aspherical surface profile can be defined by the formula (1) given in the above-described embodiment 1.

TABLE 5

Face number

A4

A6

A8

A10

A12

A14

A16

S1

-2.6291E-04

-7.6843E-06

1.4145E-06

-2.6706E-08

-2.6596E-09

1.6627E-10

-4.4676E-12

S2

5.7646E-04

-8.7775E-06

2.2184E-06

-4.8369E-07

3.3438E-08

-1.1727E-09

2.3757E-11

S3

5.7082E-03

-4.6713E-04

3.8312E-05

-3.0128E-06

1.5440E-07

-4.6291E-09

7.7857E-11

S4

3.6511E-03

-6.3372E-04

5.6937E-05

-3.1335E-06

1.1501E-07

-2.7547E-09

3.8200E-11

S5

-1.3971E-03

-1.7280E-04

3.6287E-05

-8.6680E-06

1.6396E-06

-2.0260E-07

1.7235E-08

S6

4.1610E-03

-6.9613E-04

6.7114E-05

-3.9165E-06

1.4377E-07

-3.2574E-09

4.1468E-11

S7

2.5979E-03

-3.0999E-05

-1.3165E-05

1.6369E-06

-1.0076E-07

3.5501E-09

-6.6564E-11

S8

-3.5370E-03

9.7619E-04

-1.4843E-04

1.5814E-05

-1.1838E-06

6.0645E-08

-1.8325E-09

S9

-1.3908E-03

3.1744E-05

1.4426E-05

-4.5644E-06

7.7648E-07

-7.3015E-08

3.6436E-09

S10

1.1227E-17

-4.5882E-25

7.6509E-33

-7.2160E-41

4.1776E-49

-1.5129E-57

3.3407E-66

S11

-3.7143E-03

-2.2797E-04

1.0763E-04

-4.1463E-05

9.4754E-06

-1.3614E-06

1.1804E-07

S12

-7.1862E-04

-3.5485E-05

4.4331E-06

-2.3688E-07

-1.9886E-08

2.0528E-09

-2.3759E-11

S13

-1.0836E-04

-9.0552E-06

-7.8636E-08

1.3054E-08

1.8090E-09

-5.2688E-10

1.6191E-11

S14

-1.8638E-03

-5.9980E-05

1.4013E-05

-2.0074E-06

1.8916E-07

-1.1573E-08

4.6589E-10

TABLE 6-1

Face number

A18

A20

A22

A24

A26

A28

S1

6.6584E-14

-5.2982E-16

1.7358E-18

0.0000E+00

S2

-2.8322E-13

1.8536E-15

-5.1529E-18

0.0000E+00

S3

-6.4518E-13

1.3038E-15

8.8588E-18

0.0000E+00

S4

-2.2833E-13

0.0000E+00

S5

-1.0443E-09

4.5002E-11

-1.3402E-12

2.6022E-14

-2.9435E-16

1.4636E-18

S6

-2.2588E-13

0.0000E+00

S7

5.0880E-13

0.0000E+00

S8

2.4130E-11

0.0000E+00

S9

-7.3109E-11

0.0000E+00

S10

-4.1106E-75

2.1589E-84

0.0000E+00

S11

-5.6653E-09

1.1554E-10

0.0000E+00

S12

-9.8918E-13

6.1380E-19

0.0000E+00

S13

3.2107E-13

-1.0974E-14

0.0000E+00

S14

-1.1644E-11

1.3392E-13

0.0000E+00

TABLE 6-2

Fig. 6A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 3, which indicates the focus deviation of light rays of different wavelengths after passing through the lens. Fig. 6B shows an astigmatism curve of the optical imaging lens of embodiment 3, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 6C shows a distortion curve of the optical imaging lens of embodiment 3, which represents distortion magnitude values corresponding to different image heights. Fig. 6D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 3, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 6A to 6D, the optical imaging lens provided in embodiment 3 can achieve good imaging quality.

Example 4

An optical imaging lens according to embodiment 4 of the present application is described below with reference to fig. 7 to 8D. Fig. 7 shows a schematic structural diagram of an optical imaging lens according to embodiment 4 of the present application.

As shown in fig. 7, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7 and filter E8.

Table 7 shows the optical imaging lens of embodiment 4Basic parameters, wherein the radius of curvature and thickness/distance are in millimeters (mm). Tables 8-1 and 8-2 show the higher order term coefficients A that can be used for each of the aspherical mirror faces S1 to S14 in example 4 ₄ 、A ₆ 、A ₈ 、A ₁₀ 、A ₁₂ 、A ₁₄ 、A ₁₆ 、A ₁₈ 、A ₂₀ 、A ₂₂ 、A ₂₄ 、A ₂₆ And A ₂₈ Wherein each aspherical surface profile can be defined by the formula (1) given in the above-described embodiment 1.

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TABLE 7

Face number

A4

A6

A8

A10

A12

A14

A16

S1

-2.8152E-04

-3.8644E-06

6.0608E-07

6.2067E-08

-8.8506E-09

4.4992E-10

-1.2813E-11

S2

3.1339E-04

6.9544E-05

-6.9141E-06

9.3932E-08

1.0924E-08

-6.0306E-10

1.4351E-11

S3

5.2910E-03

-3.4663E-04

2.6692E-05

-2.3693E-06

1.2509E-07

-3.4152E-09

4.0572E-11

S4

3.5427E-03

-5.6300E-04

4.3055E-05

-1.8134E-06

4.5132E-08

-6.4529E-10

4.2568E-12

S5

-1.3491E-03

-1.3978E-04

2.3550E-05

-7.3933E-06

1.5195E-06

-1.8425E-07

1.5306E-08

S6

4.4339E-03

-8.7122E-04

1.0337E-04

-7.2827E-06

3.0920E-07

-7.7464E-09

1.0515E-10

S7

1.7634E-03

1.7790E-04

-3.3472E-05

2.7531E-06

-1.4290E-07

4.7183E-09

-8.7178E-11

S8

-4.6895E-03

1.3446E-03

-1.9991E-04

1.8665E-05

-1.1400E-06

4.8402E-08

-1.3228E-09

S9

-1.5133E-03

6.1464E-05

2.1067E-06

-1.7112E-06

3.7675E-07

-4.0304E-08

2.2054E-09

S10

1.1227E-17

-4.5882E-25

7.6509E-33

-7.2160E-41

4.1776E-49

-1.5129E-57

3.3407E-66

S11

-3.4911E-03

-6.4435E-05

-5.8188E-06

-1.0871E-06

6.7464E-07

-1.7130E-07

2.1172E-08

S12

-5.2045E-04

-4.6525E-05

3.8750E-06

-2.3692E-07

-1.7523E-08

2.1309E-09

-4.3850E-11

S13

-2.3233E-05

-1.2963E-05

-7.1414E-07

-8.8070E-09

1.6412E-09

-4.8808E-10

1.9648E-11

S14

-1.8614E-03

-8.3216E-05

1.5461E-05

-2.1855E-06

2.1465E-07

-1.4141E-08

6.0504E-10

TABLE 8-1

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TABLE 8-2

Fig. 8A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 4, which indicates the focus deviation of light rays of different wavelengths after passing through the lens. Fig. 8B shows an astigmatism curve of the optical imaging lens of embodiment 4, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 8C shows a distortion curve of the optical imaging lens of embodiment 4, which represents distortion magnitude values corresponding to different image heights. Fig. 8D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 4, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 8A to 8D, the optical imaging lens provided in embodiment 4 can achieve good imaging quality.

Example 5

An optical imaging lens according to embodiment 5 of the present application is described below with reference to fig. 9 to 10D. Fig. 9 shows a schematic structural diagram of an optical imaging lens according to embodiment 5 of the present application.

As shown in fig. 9, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7 and filter E8.

Table 9 shows basic parameters of the optical imaging lens of embodiment 5, in which the unit of curvature radius and thickness/distance is millimeter (mm). Tables 10-1 and 10-2 show the higher order term coefficients A that can be used for each of the aspherical mirror faces S1 to S14 in example 5 ₄ 、A ₆ 、A ₈ 、A ₁₀ 、A ₁₂ 、A ₁₄ 、A ₁₆ 、A ₁₈ 、A ₂₀ 、A ₂₂ 、A ₂₄ 、A ₂₆ And A ₂₈ Wherein each aspherical surface profile can be defined by the formula (1) given in the above-described embodiment 1.

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TABLE 9

Face number

A4

A6

A8

A10

A12

A14

A16

S1

-4.4616E-04

1.8075E-05

-1.6027E-06

3.0807E-07

-2.8939E-08

1.5329E-09

-4.9458E-11

S2

-5.1026E-04

2.7727E-04

-3.3651E-05

2.2469E-06

-9.9782E-08

3.0272E-09

-6.0581E-11

S3

4.7995E-03

-1.7799E-04

-8.3358E-07

4.5429E-07

-6.0396E-08

4.3160E-09

-1.6144E-10

S4

4.2613E-03

-8.7727E-04

9.7771E-05

-6.9008E-06

3.1946E-07

-9.1529E-09

1.4402E-10

S5

-9.6377E-04

-3.6053E-04

6.0271E-05

-1.0635E-05

1.6849E-06

-1.8838E-07

1.5039E-08

S6

5.3840E-03

-9.0892E-04

7.4258E-05

-3.3279E-06

8.6788E-08

-1.3332E-09

1.1601E-11

S7

3.6869E-03

-1.5296E-05

-4.2340E-05

5.1540E-06

-3.0198E-07

9.8556E-09

-1.7082E-10

S8

-3.9933E-03

1.2544E-03

-2.1154E-04

2.3203E-05

-1.7380E-06

8.9216E-08

-2.7417E-09

S9

-1.7981E-03

6.6925E-05

2.9254E-06

-2.0912E-06

4.7759E-07

-5.4857E-08

3.2742E-09

S10

1.1227E-17

-4.5882E-25

7.6509E-33

-7.2160E-41

4.1776E-49

-1.5129E-57

3.3407E-66

S11

-2.6677E-03

-3.7732E-05

3.4777E-05

-1.8150E-05

4.7091E-06

-7.4393E-07

6.6332E-08

S12

1.4099E-04

2.0513E-05

2.3878E-06

-3.8388E-07

-3.9603E-08

2.4401E-09

5.5536E-13

S13

1.0948E-03

1.6823E-05

-6.2388E-07

-8.4060E-08

-1.7352E-09

7.0132E-11

6.3473E-14

S14

-2.9281E-03

3.6005E-06

1.7678E-05

-5.8230E-06

1.0055E-06

-9.9934E-08

5.7963E-09

TABLE 10-1

Face number

A18

A20

A22

A24

A26

A28

S1

9.4785E-13

-9.8040E-15

4.1938E-17

0.0000E+00

S2

7.5248E-13

-5.2130E-15

1.5331E-17

0.0000E+00

S3

3.2623E-12

-3.4028E-14

1.4426E-16

0.0000E+00

S4

-9.4127E-13

0.0000E+00

S5

-8.7833E-10

3.7307E-11

-1.1139E-12

2.1936E-14

-2.5343E-16

1.2915E-18

S6

-4.6988E-14

0.0000E+00

S7

1.2207E-12

0.0000E+00

S8

3.6856E-11

0.0000E+00

S9

-7.6105E-11

0.0000E+00

S10

-4.1106E-75

2.1589E-84

0.0000E+00

S11

-3.2274E-09

6.8533E-11

0.0000E+00

S12

9.0656E-14

6.1380E-19

0.0000E+00

S13

5.0781E-14

-1.5248E-18

0.0000E+00

S14

-1.7948E-10

2.2661E-12

0.0000E+00

TABLE 10-2

Fig. 10A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 5, which indicates the focus deviation of light rays of different wavelengths after passing through the lens. Fig. 10B shows an astigmatism curve of the optical imaging lens of embodiment 5, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 10C shows a distortion curve of the optical imaging lens of embodiment 5, which represents distortion magnitude values corresponding to different image heights. Fig. 10D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 5, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 10A to 10D, the optical imaging lens provided in embodiment 5 can achieve good imaging quality.

Example 6

An optical imaging lens according to embodiment 6 of the present application is described below with reference to fig. 11 to 12D. Fig. 11 shows a schematic structural diagram of an optical imaging lens according to embodiment 6 of the present application.

As shown in fig. 11, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7 and filter E8.

Table 11 shows basic parameters of the optical imaging lens of example 6, in which the unit of curvature radius and thickness/distance is millimeter (mm). Tables 12-1 and 12-2 show the higher order coefficients A that can be used for each of the aspherical mirror surfaces S1 to S14 in example 6 ₄ 、A ₆ 、A ₈ 、A ₁₀ 、A ₁₂ 、A ₁₄ 、A ₁₆ 、A ₁₈ 、A ₂₀ 、A ₂₂ 、A ₂₄ 、A ₂₆ And A ₂₈ Wherein each aspherical surface profile can be defined by the formula (1) given in the above-described embodiment 1.

TABLE 11

Face number

A4

A6

A8

A10

A12

A14

A16

S1

-2.7304E-04

-1.2034E-06

3.8582E-07

8.1714E-08

-1.0801E-08

5.8556E-10

-1.7925E-11

S2

-2.0412E-06

1.5620E-04

-1.8662E-05

1.0166E-06

-3.3388E-08

7.3211E-10

-1.0914E-11

S3

4.7517E-03

-2.2594E-04

9.8939E-06

-8.1343E-07

3.6160E-08

-3.2744E-10

-2.4065E-11

S4

3.4987E-03

-6.0247E-04

5.4035E-05

-3.0013E-06

1.1188E-07

-2.6933E-09

3.6728E-11

S5

-1.0896E-03

-2.5810E-04

6.5873E-05

-1.7063E-05

3.0701E-06

-3.6535E-07

3.0334E-08

S6

4.8400E-03

-8.6765E-04

8.6809E-05

-5.2023E-06

1.9312E-07

-4.3549E-09

5.4513E-11

S7

2.0516E-03

1.8454E-04

-4.4335E-05

4.1772E-06

-2.2679E-07

7.2569E-09

-1.2533E-10

S8

-4.5708E-03

1.3524E-03

-1.9733E-04

1.8289E-05

-1.1242E-06

4.8286E-08

-1.3350E-09

S9

-1.3809E-03

-7.6425E-06

2.6915E-05

-7.2099E-06

1.0692E-06

-8.8847E-08

3.9013E-09

S10

1.1226E-17

-4.5876E-25

7.6495E-33

-7.2143E-41

4.1764E-49

-1.5123E-57

3.3394E-66

S11

-2.1377E-03

1.5906E-04

-1.5774E-04

5.5296E-05

-1.2236E-05

1.6572E-06

-1.3431E-07

S12

2.1534E-04

-1.6431E-05

3.7272E-06

-2.8516E-07

-2.1155E-08

1.9001E-09

-2.0033E-11

S13

-4.9502E-04

7.2509E-06

7.0345E-07

3.2934E-08

1.9058E-09

-4.8741E-10

2.1766E-11

S14

-2.7575E-03

1.8764E-04

-6.1013E-05

1.0568E-05

-1.1721E-06

8.4111E-08

-3.7826E-09

TABLE 12-1

Face number

A18

A20

A22

A24

A26

A28

S1

3.1806E-13

-3.0235E-15

1.1872E-17

0.0000E+00

S2

1.0553E-13

-5.8812E-16

1.4117E-18

0.0000E+00

S3

8.4921E-13

-1.0969E-14

5.1971E-17

0.0000E+00

S4

-2.1113E-13

0.0000E+00

S5

-1.7969E-09

7.5425E-11

-2.1791E-12

4.0974E-14

-4.4923E-16

2.1706E-18

S6

-2.8971E-13

0.0000E+00

S7

8.9357E-13

0.0000E+00

S8

1.7538E-11

0.0000E+00

S9

-6.9161E-11

0.0000E+00

S10

-4.1088E-75

2.1579E-84

0.0000E+00

S11

5.8556E-09

-1.0329E-10

0.0000E+00

S12

9.0655E-14

6.1036E-19

0.0000E+00

S13

-1.9487E-13

-1.5205E-18

0.0000E+00

S14

9.6743E-11

-1.0558E-12

0.0000E+00

TABLE 12-2

Fig. 12A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 6, which indicates the focus deviation of light rays of different wavelengths after passing through the lens. Fig. 12B shows an astigmatism curve of the optical imaging lens of embodiment 6, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 12C shows a distortion curve of the optical imaging lens of embodiment 6, which represents distortion magnitude values corresponding to different image heights. Fig. 12D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 6, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 12A to 12D, the optical imaging lens provided in embodiment 6 can achieve good imaging quality.

Example 7

An optical imaging lens according to embodiment 7 of the present application is described below with reference to fig. 13 to 14D. Fig. 13 shows a schematic structural diagram of an optical imaging lens according to embodiment 7 of the present application.

As shown in fig. 13, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7 and filter E8.

The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is convex. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave, and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is concave. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave and an image-side surface S12 thereof is convex. The seventh lens element E7 has positive refractive power, wherein an object-side surface S13 thereof is convex, and an image-side surface S14 thereof is convex. The filter E8 has an object side surface S15 and an image side surface S16. The optical imaging lens has an imaging surface S17, and light from an object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.

Table 13 shows basic parameters of the optical imaging lens of example 7, in which the unit of curvature radius and thickness/distance is millimeter (mm). Tables 14-1 and 14-2 show the higher order coefficients A that can be used for each of the aspherical mirror surfaces S1 to S14 in example 7 ₄ 、A ₆ 、A ₈ 、A ₁₀ 、A ₁₂ 、A ₁₄ 、A ₁₆ 、A ₁₈ 、A ₂₀ 、A ₂₂ 、A ₂₄ 、A ₂₆ And A ₂₈ Wherein each aspherical surface profile can be defined by the formula (1) given in the above-described embodiment 1.

TABLE 13

TABLE 14-1

Face number

A18

A20

A22

A24

A26

A28

S1

3.2458E-13

-2.9056E-15

1.0535E-17

0.0000E+00

S2

4.1678E-13

-2.3602E-15

5.7093E-18

0.0000E+00

S3

1.5306E-12

-1.1857E-14

3.8121E-17

0.0000E+00

S4

-3.4151E-13

0.0000E+00

S5

-9.4585E-10

3.3516E-11

-8.0909E-13

1.2601E-14

-1.1319E-16

4.4047E-19

S6

-2.9653E-13

0.0000E+00

S7

6.2506E-13

0.0000E+00

S8

4.3265E-11

0.0000E+00

S9

-1.9666E-11

0.0000E+00

S10

-4.1106E-75

2.1589E-84

0.0000E+00

S11

-9.1042E-09

1.8843E-10

0.0000E+00

S12

9.0656E-14

6.1380E-19

0.0000E+00

S13

5.4936E-14

8.8907E-16

0.0000E+00

S14

8.3762E-11

-5.0548E-13

0.0000E+00

TABLE 14-2

Fig. 14A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 7, which indicates the focus deviation of light rays of different wavelengths after passing through the lens. Fig. 14B shows an astigmatism curve of the optical imaging lens of embodiment 7, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 14C shows a distortion curve of the optical imaging lens of embodiment 7, which represents distortion magnitude values corresponding to different image heights. Fig. 14D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 7, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 14A to 14D, the optical imaging lens provided in embodiment 7 can achieve good imaging quality.

Example 8

An optical imaging lens according to embodiment 8 of the present application is described below with reference to fig. 15 to 16D. Fig. 15 shows a schematic structural diagram of an optical imaging lens according to embodiment 8 of the present application.

As shown in fig. 15, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7 and filter E8.

Table 15 shows example 8The fundamental parameters of an optical imaging lens are the radius of curvature and the thickness/distance in millimeters (mm). Tables 16-1 and 16-2 show the higher order coefficients A that can be used for each of the aspherical mirror surfaces S1 to S14 in example 8 ₄ 、A ₆ 、A ₈ 、A ₁₀ 、A ₁₂ 、A ₁₄ 、A ₁₆ 、A ₁₈ 、A ₂₀ 、A ₂₂ 、A ₂₄ 、A ₂₆ And A ₂₈ Wherein each aspherical surface profile can be defined by the formula (1) given in the above-described embodiment 1.

TABLE 15

Face number

A4

A6

A8

A10

A12

A14

A16

S1

-2.6752E-04

2.1362E-06

-1.5854E-07

6.9230E-08

-5.7034E-09

2.6711E-10

-8.3860E-12

S2

-1.3119E-04

1.5394E-04

-1.9653E-05

1.3587E-06

-6.2052E-08

1.8872E-09

-3.6853E-11

S3

4.6165E-03

-2.1606E-04

3.1649E-06

5.1157E-07

-7.1785E-08

4.3187E-09

-1.3922E-10

S4

4.3063E-03

-8.8167E-04

9.5053E-05

-6.3367E-06

2.7187E-07

-7.1627E-09

1.0366E-10

S5

-3.2641E-04

-5.2788E-04

1.1266E-04

-2.3240E-05

3.8299E-06

-4.4610E-07

3.6738E-08

S6

5.1467E-03

-7.7000E-04

5.9780E-05

-2.6753E-06

7.1287E-08

-1.1148E-09

9.5297E-12

S7

3.1615E-03

8.3425E-05

-4.6348E-05

5.0064E-06

-2.8389E-07

9.1678E-09

-1.5793E-10

S8

-3.7445E-03

1.1972E-03

-1.9701E-04

2.2043E-05

-1.7215E-06

9.4143E-08

-3.1240E-09

S9

-1.3573E-03

-7.2130E-06

2.2875E-05

-7.1042E-06

1.1713E-06

-1.0723E-07

5.1506E-09

S10

1.1227E-17

-4.5882E-25

7.6509E-33

-7.2160E-41

4.1776E-49

-1.5129E-57

3.3407E-66

S11

-1.0447E-03

3.5631E-04

-1.6133E-04

5.3520E-05

-1.1581E-05

1.5285E-06

-1.2087E-07

S12

-2.5438E-05

4.0249E-05

2.8034E-07

-5.6808E-07

-2.6638E-08

2.4804E-09

-2.2155E-11

S13

1.1542E-04

1.2406E-06

-4.6388E-08

4.0447E-08

2.3039E-09

-5.9793E-10

1.1799E-11

S14

-2.6860E-03

2.0234E-04

-3.9345E-05

2.1456E-06

3.1299E-07

-6.1837E-08

4.5171E-09

TABLE 16-1

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TABLE 16-2

Fig. 16A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 8, which indicates the focus deviation of light rays of different wavelengths after passing through the lens. Fig. 16B shows an astigmatism curve of the optical imaging lens of embodiment 8, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 16C shows a distortion curve of the optical imaging lens of embodiment 8, which represents distortion magnitude values corresponding to different image heights. Fig. 16D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 8, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 16A to 16D, the optical imaging lens provided in embodiment 8 can achieve good imaging quality.

Example 9

An optical imaging lens according to embodiment 9 of the present application is described below with reference to fig. 17 to 18D. Fig. 17 shows a schematic configuration diagram of an optical imaging lens according to embodiment 9 of the present application.

As shown in fig. 17, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7 and filter E8.

Table 17 shows basic parameters of the optical imaging lens of example 9, in which the unit of curvature radius and thickness/distance is millimeter (mm). Tables 18-1 and 18-2 show the higher order coefficients A that can be used for each of the aspherical mirror surfaces S1 to S14 in example 9 ₄ 、A ₆ 、A ₈ 、A ₁₀ 、A ₁₂ 、A ₁₄ 、A ₁₆ 、A ₁₈ 、A ₂₀ 、A ₂₂ 、A ₂₄ 、A ₂₆ And A ₂₈ Wherein each aspherical surface profile can be defined by the formula (1) given in the above-described embodiment 1.

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TABLE 17

Face number

A4

A6

A8

A10

A12

A14

A16

S1

-5.4875E-04

4.3119E-05

-3.1555E-06

2.7096E-07

-1.9271E-08

9.5529E-10

-3.0881E-11

S2

-7.5404E-04

3.7115E-04

-4.7119E-05

3.2592E-06

-1.4477E-07

4.2715E-09

-8.2230E-11

S3

4.7830E-03

-1.4573E-04

-8.3252E-06

1.2189E-06

-1.0403E-07

5.8359E-09

-1.9458E-10

S4

4.4014E-03

-9.3287E-04

1.0720E-04

-7.7305E-06

3.6046E-07

-1.0302E-08

1.6111E-10

S5

-1.1024E-03

-3.5642E-04

6.1447E-05

-1.0724E-05

1.6564E-06

-1.8009E-07

1.3991E-08

S6

4.3933E-03

-6.6984E-04

5.0184E-05

-2.0386E-06

4.7068E-08

-6.2497E-10

4.7587E-12

S7

3.2213E-03

1.6657E-04

-6.7059E-05

6.8218E-06

-3.6403E-07

1.1137E-08

-1.8435E-10

S8

-3.8654E-03

1.2219E-03

-1.9802E-04

1.9092E-05

-1.1661E-06

4.9451E-08

-1.3765E-09

S9

-1.8467E-03

9.3969E-05

-7.1754E-06

3.0511E-07

1.1642E-07

-2.2480E-08

1.6888E-09

S10

1.1227E-17

-4.5882E-25

7.6509E-33

-7.2160E-41

4.1776E-49

-1.5129E-57

3.3407E-66

S11

-2.5570E-03

1.5715E-05

-1.0211E-05

4.8946E-07

2.4019E-07

-8.9212E-08

9.6357E-09

S12

2.8834E-04

2.3607E-05

2.7125E-06

-3.5383E-07

-3.9119E-08

2.4401E-09

5.5536E-13

S13

1.1476E-03

2.1185E-05

-6.1250E-07

-9.7237E-08

-2.2388E-09

2.0325E-10

6.3473E-14

S14

-2.7020E-03

-1.2914E-04

5.3712E-05

-1.1605E-05

1.5674E-06

-1.3138E-07

6.6296E-09

TABLE 18-1

TABLE 18-2

Fig. 18A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 9, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 18B shows an astigmatism curve of the optical imaging lens of embodiment 9, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 18C shows a distortion curve of the optical imaging lens of embodiment 9, which represents distortion magnitude values corresponding to different image heights. Fig. 18D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 9, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 18A to 18D, the optical imaging lens provided in embodiment 9 can achieve good imaging quality.

Further, in embodiments 1 to 9, effective focal length values F1 to F7 of the respective lenses, effective focal length F of the optical imaging lens, maximum field angle FOV of the optical imaging lens, and F-number Fno of the optical imaging lens are shown in table 19.

Parameters/embodiments	1	2	3	4	5	6	7	8	9
										f1(mm)	16.27	14.18	16.10	16.15	16.39	16.13	15.68	16.20	16.47
f2(mm)	-290.09	-373.01	-208.72	-221.02	-252.95	-237.29	-268.54	-278.01	-227.33
										f3(mm)	8.87	8.57	8.81	8.84	8.75	8.93	8.99	8.83	8.78
f4(mm)	-5.30	-5.20	-5.39	-5.45	-5.21	-5.26	-5.09	-5.22	-5.22
										f5(mm)	17.79	24.70	16.38	16.40	16.98	16.89	18.88	18.89	16.18
f6(mm)	-10.61	-6.74	-9.21	-9.06	-14.96	-10.74	-14.15	-12.79	-14.83
										f7(mm)	21.61	9.84	17.39	17.55	35.41	20.58	25.72	23.42	38.91
f(mm)	17.42	17.42	17.42	17.42	17.42	17.42	17.42	17.42	17.42
										FOV(°)	25.6	26.2	33.1	31.3	27.0	28.0	27.0	27.0	27.0
Fno	1.58	1.60	1.58	1.58	1.78	1.53	1.44	1.49	1.85

Table 19 the conditional expressions in examples 1 to 9 satisfy the conditions shown in table 20, respectively.

Condition/example	1	2	3	4	5	6	7	8	9
										f/(Fno×Tan(FOV))(mm)	23.00	22.19	16.89	18.11	19.18	21.42	23.75	22.90	18.48
Fno/Tan(FOV/2)	6.97	6.88	5.33	5.65	7.42	6.13	6.00	6.22	7.71
										f/f4	-3.29	-3.35	-3.23	-3.20	-3.35	-3.31	-3.42	-3.34	-3.34
f/f6	-1.64	-2.58	-1.89	-1.92	-1.16	-1.62	-1.23	-1.36	-1.17
										f1234/f	1.35	1.13	1.43	1.39	1.46	1.44	1.45	1.36	1.47
f5/f67	-0.71	-0.81	-0.74	-0.75	-0.57	-0.65	-0.54	-0.55	-0.59
										AVE(DT14)/AVE(DT57)	1.50	1.49	1.32	1.38	1.35	1.34	1.37	1.42	1.29
DT11/DT72	1.52	1.47	1.21	1.27	1.28	1.34	1.36	1.37	1.22
										AVE(DT67)/DT51	0.95	1.07	1.16	1.09	1.04	1.05	1.13	1.06	1.06
(N4+N5+N6)/3	1.74	1.71	1.74	1.74	1.71	1.74	1.71	1.71	1.71
										(V1+V2+V3)/3	64.10	64.21	64.10	64.10	64.70	64.10	64.64	64.81	64.70
10×(N1-(N2+N3)/2)	0.52	0.81	0.52	0.52	0.53	0.52	0.71	0.59	0.53
										(T45+T56)/∑AT	0.95	0.91	0.90	0.90	0.91	0.90	0.95	0.94	0.88
T45/T56	1.28	1.09	1.14	1.17	1.11	1.25	0.89	1.20	1.10
										(CT1+CT3+CT7)/∑CT	0.73	0.78	0.77	0.77	0.71	0.75	0.77	0.75	0.71
CT2/(CT4+CT6)	1.48	2.27	1.97	2.05	0.92	2.11	2.04	1.59	0.92
										CT3/CT1	1.28	1.21	1.23	1.24	1.64	1.29	1.13	1.25	1.69
f1/f3+f5/f3	3.84	4.54	3.69	3.68	3.81	3.70	3.85	3.97	3.72

Table 20

The present application also provides an imaging device provided with an electron-sensitive element for imaging, which may be a photosensitive coupling element (Charge Coupled Device, CCD) or a complementary metal oxide semiconductor element (Complementary Metal Oxide Semiconductor, CMOS). The imaging device may be a stand alone imaging device such as a digital camera or an imaging module integrated on a mobile electronic device such as a cell phone. The imaging device is equipped with the optical imaging lens described above.

The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It should be understood by those skilled in the art that the scope of protection referred to in this application is not limited to the specific combination of the above technical features, but also encompasses other technical solutions formed by any combination of the above technical features or their equivalents without departing from the spirit of the application. Such as the above-described features and technical features having similar functions (but not limited to) disclosed in the present application are replaced with each other.

Claims

1. The optical imaging lens is characterized by sequentially comprising, from an object side to an image side along an optical axis:

a first lens having positive optical power;

a second lens having negative optical power;

a third lens having positive optical power;

a fourth lens having negative optical power;

a fifth lens having positive optical power;

a sixth lens having negative optical power; and

a seventh lens having a positive optical power,

the optical imaging lens satisfies the following conditions:

f/(Fno×Tan(FOV))＞15mm；

-f/f 4 is less than or equal to-3.5 and less than or equal to-3.0; and

0.7 < T45/T56 < 1.3, wherein F is the effective focal length of the optical imaging lens, FNo is the F number of the optical imaging lens, FOV is the maximum field angle of the optical imaging lens, F4 is the effective focal length of the fourth lens, T45 is the separation distance of the fourth lens and the fifth lens on the optical axis, and T56 is the separation distance of the fifth lens and the sixth lens on the optical axis;

The number of lenses having optical power in the optical imaging lens is seven.

2. The optical imaging lens of claim 1, wherein the F-number Fno of the optical imaging lens and the maximum field angle FOV of the optical imaging lens satisfy:

5＜Fno/Tan(FOV/2)＜9。

3. the optical imaging lens of claim 1, wherein an effective focal length f of the optical imaging lens and an effective focal length f6 of the sixth lens satisfy:

-3.0＜f/f6＜-1.0。

4. the optical imaging lens of claim 1, wherein a combined focal length f1234 of the first, second, third, and fourth lenses and an effective focal length f of the optical imaging lens satisfy:

0.9＜f1234/f≤1.5。

5. the optical imaging lens of claim 1, wherein an effective focal length f5 of the fifth lens and a combined focal length f67 of the sixth lens and the seventh lens satisfy:

-1.0＜f5/f67≤-0.5。

6. the optical imaging lens according to claim 1, wherein an average value AVE (DT 14) of maximum effective radii of the first to fourth lenses and an average value AVE (DT 57) of maximum effective radii of the fifth to seventh lenses satisfy:

1.2＜AVE(DT14)/AVE(DT57)＜1.6。

7. The optical imaging lens of claim 1, wherein a maximum effective radius DT11 of an object-side surface of the first lens and a maximum effective radius DT72 of an image-side surface of the seventh lens satisfy:

1.2＜DT11/DT72＜1.6。

8. the optical imaging lens as claimed in claim 1, wherein an average value AVE (DT 67) of maximum effective radii of the sixth lens to the seventh lens and a maximum effective radius DT51 of an object side surface of the fifth lens satisfy:

0.9＜AVE(DT67)/DT51＜1.2。

9. the optical imaging lens according to any one of claims 1 to 8, wherein a refractive index N4 of the fourth lens, a refractive index N5 of the fifth lens, and a refractive index N6 of the sixth lens satisfy:

1.7≤(N4+N5+N6)/3＜1.8。

10. the optical imaging lens according to any one of claims 1 to 8, wherein an abbe number V1 of the first lens, an abbe number V2 of the second lens, and an abbe number V3 of the third lens satisfy:

60＜(V1+V2+V3)/3＜70。

11. the optical imaging lens according to any one of claims 1 to 8, wherein a refractive index N1 of the first lens, a refractive index N2 of the second lens, and a refractive index N3 of the third lens satisfy:

10×(N1-(N2+N3)/2)≤1.0。

12. the optical imaging lens according to any one of claims 1 to 8, wherein a sum Σat of a separation distance T45 of the fourth lens and the fifth lens on the optical axis, a separation distance T56 of the fifth lens and the sixth lens on the optical axis, and a separation distance of any adjacent two of the first lens to the seventh lens on the optical axis satisfies:

0.8＜(T45+T56)/∑AT＜1.0。

13. The optical imaging lens according to any one of claims 1 to 8, wherein a sum Σct of a center thickness CT1 of the first lens on the optical axis, a center thickness CT3 of the third lens on the optical axis, a center thickness CT7 of the seventh lens on the optical axis, and center thicknesses Σct of the first to seventh lenses on the optical axis satisfies:

0.7≤(CT1+CT3+CT7)/∑CT＜0.9。

14. the optical imaging lens according to any one of claims 1 to 8, wherein a center thickness CT2 of the second lens on the optical axis, a center thickness CT4 of the fourth lens on the optical axis, and a center thickness CT6 of the sixth lens on the optical axis satisfy:

0.9＜CT2/(CT4+CT6)＜2.5。

15. the optical imaging lens according to any one of claims 1 to 8, wherein a center thickness CT3 of the third lens on the optical axis and a center thickness CT1 of the first lens on the optical axis satisfy:

1.0＜CT3/CT1≤1.7。

16. the optical imaging lens of any of claims 1 to 8, wherein an effective focal length f1 of the first lens, an effective focal length f3 of the third lens, and an effective focal length f5 of the fifth lens satisfy:

3.5＜f1/f3+f5/f3＜5.0。

17. The optical imaging lens is characterized by sequentially comprising, from an object side to an image side along an optical axis:

a first lens having positive optical power;

a second lens having negative optical power;

a third lens having positive optical power;

a fourth lens having negative optical power;

a fifth lens having positive optical power;

a sixth lens having negative optical power; and

a seventh lens having a positive optical power,

the optical imaging lens satisfies the following conditions:

5＜Fno/Tan(FOV/2)＜9；

-f/f 4 is less than or equal to-3.5 and less than or equal to-3.0; and

0.7 < T45/T56 < 1.3, wherein FNo is the F number of the optical imaging lens, FOV is the maximum field angle of the optical imaging lens, F is the effective focal length of the optical imaging lens, F4 is the effective focal length of the fourth lens, T45 is the distance between the fourth lens and the fifth lens on the optical axis, and T56 is the distance between the fifth lens and the sixth lens on the optical axis;

the number of lenses having optical power in the optical imaging lens is seven.

18. The optical imaging lens of claim 17, wherein an effective focal length f of the optical imaging lens and an effective focal length f6 of the sixth lens satisfy:

-3.0＜f/f6＜-1.0。

19. the optical imaging lens of claim 18, wherein an effective focal length F of the optical imaging lens, an F-number Fno of the optical imaging lens, and a maximum field angle FOV of the optical imaging lens satisfy:

f/(Fno×Tan(FOV))＞15mm。

20. The optical imaging lens of claim 17, wherein a combined focal length f1234 of the first, second, third, and fourth lenses and an effective focal length f of the optical imaging lens satisfy:

0.9＜f1234/f≤1.5。

21. the optical imaging lens of claim 17, wherein an effective focal length f5 of the fifth lens and a combined focal length f67 of the sixth lens and the seventh lens satisfy:

-1.0＜f5/f67≤-0.5。

22. the optical imaging lens of claim 17, wherein an average value AVE (DT 14) of maximum effective radii of the first to fourth lenses and an average value AVE (DT 57) of maximum effective radii of the fifth to seventh lenses satisfy:

1.2＜AVE(DT14)/AVE(DT57)＜1.6。

23. the optical imaging lens of claim 17, wherein a maximum effective radius DT11 of an object-side surface of the first lens and a maximum effective radius DT72 of an image-side surface of the seventh lens satisfy:

1.2＜DT11/DT72＜1.6。

24. the optical imaging lens of claim 17, wherein an average value AVE (DT 67) of maximum effective radii of the sixth lens to the seventh lens and a maximum effective radius DT51 of an object side surface of the fifth lens satisfy:

0.9＜AVE(DT67)/DT51＜1.2。

25. The optical imaging lens of any of claims 17 to 24, wherein a refractive index N4 of the fourth lens, a refractive index N5 of the fifth lens, and a refractive index N6 of the sixth lens satisfy:

1.7≤(N4+N5+N6)/3＜1.8。

26. the optical imaging lens according to any one of claims 17 to 24, wherein an abbe number V1 of the first lens, an abbe number V2 of the second lens, and an abbe number V3 of the third lens satisfy:

60＜(V1+V2+V3)/3＜70。

27. the optical imaging lens of any of claims 17 to 24, wherein a refractive index N1 of the first lens, a refractive index N2 of the second lens, and a refractive index N3 of the third lens satisfy:

10×(N1-(N2+N3)/2)≤1.0。

28. the optical imaging lens according to any one of claims 17 to 24, wherein a sum Σat of a separation distance T45 of the fourth lens and the fifth lens on the optical axis, a separation distance T56 of the fifth lens and the sixth lens on the optical axis, and a separation distance of any adjacent two of the first lens to the seventh lens on the optical axis satisfies:

0.8＜(T45+T56)/∑AT＜1.0。

29. the optical imaging lens according to any one of claims 17 to 24, wherein a sum Σct of a center thickness CT1 of the first lens on the optical axis, a center thickness CT3 of the third lens on the optical axis, a center thickness CT7 of the seventh lens on the optical axis, and center thicknesses Σct of the first to seventh lenses on the optical axis satisfies:

0.7≤(CT1+CT3+CT7)/∑CT＜0.9。

30. The optical imaging lens according to any one of claims 17 to 24, wherein a center thickness CT2 of the second lens on the optical axis, a center thickness CT4 of the fourth lens on the optical axis, and a center thickness CT6 of the sixth lens on the optical axis satisfy:

0.9＜CT2/(CT4+CT6)＜2.5。

31. the optical imaging lens according to any one of claims 17 to 24, wherein a center thickness CT3 of the third lens on the optical axis and a center thickness CT1 of the first lens on the optical axis satisfy:

1.0＜CT3/CT1≤1.7。

32. the optical imaging lens of any of claims 17 to 24, wherein an effective focal length f1 of the first lens, an effective focal length f3 of the third lens, and an effective focal length f5 of the fifth lens satisfy:

3.5＜f1/f3+f5/f3＜5.0。