An optical imaging lens

Abstract

The present invention discloses an optical imaging lens, which sequentially includes, from the object side to the image side along the optical axis: a first lens with positive optical power; a second lens, whose object side is convex and image side is concave; a third lens with negative optical power, whose object side is convex; a fourth lens; a fifth lens with negative optical power; a sixth lens with positive optical power; a seventh lens with negative optical power; wherein, half of the diagonal length of the effective pixel region on the imaging surface ImgH and the axial distance TTL from the object side of the first lens to the imaging surface satisfy: 4.8mm < ImgH * ImgH / TTL < 7.0mm; the dispersion coefficient V1 of the first lens satisfies: 70 < V1 < 90. The optical imaging lens provided by the present invention improves the material of the first lens, enhances the Abbe number, optimizes and improves the chromatic aberration of the system, and solves the problem of purple fringing during the shooting process of high-pixel mobile phones.

Description

Technical Field

[0001] The present invention belongs to the field of optical imaging, and particularly relates to an optical imaging lens including seven lenses. Background Art

[0002] With the rapid development of camera devices and the white-hot trend of mobile phone photography in the market, mobile phones equipped with high-pixel imaging lenses have now almost reached the industry norm. While major manufacturers are pursuing high-pixel imaging, the requirements for image plane image quality have reached a new high with the development of technology and industrial technology. That is, while major manufacturers are designing lenses for high-pixel imaging, more stringent requirements are put forward for the phenomenon of purple fringing during the lens shooting process.

[0003] Therefore, the present invention provides a new optical imaging lens, which improves the Abbe number by improving the material of the first lens, optimizes and improves the chromatic aberration of the system, and realizes the improvement of the purple fringing problem during the shooting of high-pixel mobile phones. Summary of the Invention

[0004] The present invention aims to provide an optical imaging lens composed of seven lenses, which has the characteristics of a compact structure and high pixels, can well correct the magnification chromatic aberration, and optimize and weaken the purple fringing phenomenon during the lens shooting process.

[0005] The present invention provides an optical imaging lens, which sequentially includes, from the object side to the image side along the optical axis: a first lens with a positive optical power; a second lens, whose object side is convex and image side is concave; a third lens with a negative optical power, whose object side is convex; a fourth lens; a fifth lens with a negative optical power; a sixth lens with a positive optical power; a seventh lens with a negative optical power;

[0006] Wherein, half of the diagonal length of the effective pixel area on the imaging surface ImgH and the axial distance TTL from the object side surface of the first lens to the imaging surface satisfy: 4.8mm < ImgH * ImgH / TTL < 7.0mm; the dispersion coefficient V1 of the first lens satisfies: 70 < V1 < 90.

[0007] According to an embodiment of the present invention, the axial distance TTL from the object side surface of the first lens to the imaging surface and half of the diagonal length of the effective pixel area ImgH on the imaging surface satisfy: TTL / ImgH < 1.3.

[0008] According to an embodiment of the present invention, the effective focal length f of the optical imaging lens and the maximum field angle FOV of the optical imaging lens satisfy: 5.5mm < f * tan(FOV / 2) < 6.5mm.

[0009] According to one embodiment of the present invention, the curvature radius R1 of the object side surface of the first lens, the curvature radius R2 of the image side surface of the first lens and the effective focal length f1 of the first lens satisfy: 1.0<(R1+R2) / f1<1.5.

[0010] According to one embodiment of the present invention, the effective focal length f4 of the fourth lens and the effective focal length f6 of the sixth lens satisfy:

[0011] 1.5<(f4+f6) / (f4-f6)<2.0.

[0012] According to one embodiment of the present invention, the curvature radius R6 of the image side surface of the third lens, the curvature radius R5 of the object side surface of the third lens and the effective focal length f3 of the third lens satisfy: 1.6 <f3 / (R6-R5)<4.2。

[0013] According to one embodiment of the present invention, the effective focal length f5 of the fifth lens and the effective focal length f7 of the seventh lens satisfy the following conditions: 2.5 <f5 / f7<4.6。

[0014] According to one embodiment of the present invention, the curvature radius R11 of the object side surface of the sixth lens, the curvature radius R12 of the image side surface of the sixth lens, the curvature radius R13 of the object side surface of the seventh lens, and the curvature radius R14 of the image side surface of the seventh lens satisfy: 0<(R11+R12) / (R13+R14)<1.5.

[0015] According to one embodiment of the present invention, the combined focal length f12 of the first lens and the second lens and the combined focal length f56 of the fifth lens and the sixth lens satisfy the following equation: 0.7 <f12 / f56<1.2。

[0016] According to one embodiment of the present invention, the on-axis distance SAG51 between the intersection of the fifth lens objective side and the optical axis to the effective radius vertex of the fifth lens objective side, the on-axis distance SAG52 between the intersection of the fifth lens image side and the optical axis to the effective radius vertex of the fifth lens image side, the on-axis distance SAG61 between the intersection of the sixth lens objective side and the optical axis to the effective radius vertex of the sixth lens objective side, and the on-axis distance SAG62 between the intersection of the sixth lens image side and the optical axis to the effective radius vertex of the sixth lens image side satisfy: 0.7<(SAG51+SAG52) / (SAG61+SAG62)<1.2.

[0017] According to an embodiment of the present invention, the axial distance SAG71 between the intersection of the object side surface of the seventh lens and the optical axis and the vertex of the effective radius of the object side surface of the seventh lens, and the axial distance SAG72 between the intersection of the image side surface of the seventh lens and the optical axis and the vertex of the effective radius of the image side surface of the seventh lens and the air gap T67 between the sixth lens and the seventh lens on the optical axis satisfy: -2.7 < (SAG71 + SAG72) / T67 < -2.2.

[0018] According to an embodiment of the present invention, the central thickness CT3 of the third lens on the optical axis, the edge thickness ET3 of the third lens, the central thickness CT4 of the fourth lens on the optical axis, and the edge thickness ET4 of the fourth lens satisfy: 0.7 < (CT3 + ET3) / (CT4 + ET4) < 1.1.

[0019] According to an embodiment of the present invention, the edge thickness ET5 of the fifth lens, the edge thickness ET6 of the sixth lens, and the edge thickness ET7 of the seventh lens satisfy: 1.6 < (ET5 + ET6) / ET7 < 2.1.

[0020] Advantages of the present invention:

[0021] The optical imaging lens provided by the present invention includes multiple lenses, such as the first lens to the seventh lens. The first lens with a positive optical power converges light rays. The converging light rays pass through the second lens with a convex surface on the object side and a concave surface on the image side, which is beneficial for the smooth transmission of light rays and is also beneficial for the optimization of spherical aberration. The third lens with a negative optical power and a convex surface on the object side is beneficial for balancing the optical power of the optical system. The light rays diverge through the fifth lens with a negative optical power, converge through the sixth lens with a positive optical power, and finally output through the seventh lens with a diverging effect. By reasonably distributing the optical powers of the seven lenses, while ensuring the stable transmission of light rays, the optical system has the characteristics of a compact structure and high pixels. The optical system that satisfies the conditional formula 4.8mm < ImgH * ImgH / TTL < 7.0mm has the characteristics of an ultra-thin large image surface, good correction of magnification chromatic aberration, and optimized reduction of purple fringing during lens shooting. Description of the drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a schematic diagram of the lens group structure of Embodiment 1 of the optical imaging lens of the present invention;

[0024] Figures 2a to 2d axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of Example 1 of the optical imaging lens of the present invention;

[0025] Figure 3 Schematic diagram of the lens assembly structure of Example 2 of the optical imaging lens of the present invention;

[0026] Figures 4a to 4d axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of Example 2 of the optical imaging lens of the present invention;

[0027] Figure 5 Schematic diagram of the lens assembly structure of Example 3 of the optical imaging lens of the present invention;

[0028] Figures 6a to 6d axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of Example 3 of the optical imaging lens of the present invention;

[0029] Figure 7 Schematic diagram of the lens assembly structure of Example 4 of the optical imaging lens of the present invention;

[0030] Figures 8a to 8d axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of Example 4 of the optical imaging lens of the present invention;

[0031] Figure 9 Schematic diagram of the lens assembly structure of Example 5 of the optical imaging lens of the present invention;

[0032] Figures 10a to 10d axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of Example 5 of the optical imaging lens of the present invention;

[0033] Figure 11 Schematic diagram of the lens assembly structure of Example 6 of the optical imaging lens of the present invention;

[0034] Figures 12a to 12d axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of Example 6 of the optical imaging lens of the present invention;

[0035] Figure 13 Schematic diagram of the lens assembly structure of Example 7 of the optical imaging lens of the present invention;

[0036] Figures 14a to 14d They are respectively the axial chromatic aberration curve, astigmatism curve, distortion curve and lateral chromatic aberration curve of Example 7 of the optical imaging lens of the present invention.

[0037] Figure 15 Schematic diagram of the lens assembly structure of Example 8 of the optical imaging lens of the present invention;

[0038] Figures 16a to 16d They are respectively the axial chromatic aberration curve, astigmatism curve, distortion curve and lateral chromatic aberration curve of Example 8 of the optical imaging lens of the present invention.

[0039] Figure 17 Schematic diagram of the lens assembly structure of Example 9 of the optical imaging lens of the present invention;

[0040] Figures 18a to 18d They are respectively the axial chromatic aberration curve, astigmatism curve, distortion curve and lateral chromatic aberration curve of Example 9 of the optical imaging lens of the present invention. DETAILED DESCRIPTION

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0042] It should be noted that in this specification, the terms "first," "second," "third," etc., are used solely to distinguish one feature from another and do not limit the features. Thus, the first lens discussed below could also be referred to as the second lens or the third lens without departing from the teachings of the present invention.

[0043] It should also be understood that the terms "comprises," "including," "having," "includes," and / or "comprising," when used in this specification, indicate the presence of the stated features, elements, and / or components, but do not preclude the presence or addition of one or more other features, elements, components, and / or combinations thereof. In addition, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire list of features rather than modifying the individual elements in the list. In addition, when describing embodiments of the present application, "may" is used to mean "one or more embodiments of the present application." And, the term "exemplary" is intended to refer to an example or illustration.

[0044] In the drawings, the thickness, size, and shape of the lenses are slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical and aspherical surfaces shown in the drawings are provided by way of example. That is, the shapes of the spherical and aspherical surfaces are not limited to those shown in the drawings. The drawings are for illustration only and are not drawn strictly to scale.

[0045] In the present description, the paraxial region refers to the region near the optical axis. If a lens surface is convex and the location of the convex surface is undefined, it means that the lens surface is convex at least in the paraxial region. If a lens surface is concave and the location of the concave surface is undefined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the subject is called the object-side surface of the lens, and the surface of each lens closest to the imaging plane is called the image-side surface of the lens.

[0046] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by those skilled in the art to which this application belongs. It should also be understood that terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology and will not be interpreted in an idealized or overly formal manner unless expressly defined as such herein.

[0047] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The features, principles and other aspects of the present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0048] Exemplary embodiments

[0049] An optical imaging lens according to an exemplary embodiment of the present invention includes seven lens elements, including, in order from the object side to the image side along the optical axis, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, and a seventh lens element. Each lens element is independent of the others, and air spaces are provided between the lenses along the optical axis.

[0050] In this exemplary embodiment, a first lens having positive optical power; a second lens having a convex object-side surface and a concave image-side surface; a third lens having negative optical power and a convex object-side surface; a fourth lens; a fifth lens having negative optical power; a sixth lens having positive optical power; and a seventh lens having negative optical power.

[0051] The first lens with positive optical power has a converging effect on light. The converged light passes through the second lens with a convex surface on the object side and a concave surface on the image side, which is conducive to smooth transmission of light and optimization of spherical aberration. The third lens with negative optical power and a convex surface on the object side is conducive to balancing the optical power of the optical system. The light diverges through the fifth lens with negative optical power, then converges through the sixth lens with positive optical power, and finally is output through the seventh lens with a diverging effect. By rationally distributing the optical power of the seven lenses, the stable light transmission is ensured, and the system has the characteristics of compact structure and high pixel resolution.

[0052] In this exemplary embodiment, half of the diagonal length ImgH of the effective pixel region on the imaging surface and the on-axis distance TTL from the object side surface of the first lens to the imaging surface satisfy: 4.8 mm < ImgH * ImgH / TTL < 7.0 mm; the system satisfying the conditional expression 4.8 mm < ImgH * ImgH / TTL < 7.0 mm features an ultra-thin and large imaging surface. More specifically, half of the diagonal length ImgH of the effective pixel region on the imaging surface and the on-axis distance TTL from the object side surface of the first lens to the imaging surface satisfy: 5.0 mm < ImgH * ImgH / TTL < 6.0 mm.

[0053] In this exemplary embodiment, the dispersion coefficient V1 of the first lens satisfies: 70 < V1 < 90. The system simultaneously satisfying the conditional expression 70 < V1 < 90 can well correct the longitudinal chromatic aberration and optimize and reduce the purple fringing phenomenon during the lens shooting process. More specifically, the dispersion coefficient V1 of the first lens satisfies: 80 < V1 < 87.

[0054] In this exemplary embodiment, the on-axis distance TTL from the object side surface of the first lens to the imaging surface and half of the diagonal length ImgH of the effective pixel region on the imaging surface satisfy: TTL / ImgH < 1.3. The system satisfying the conditional expression features an ultra-thin characteristic, a portable structure, and greatly reduces the length of the module. More specifically, the on-axis distance TTL from the object side surface of the first lens to the imaging surface and half of the diagonal length ImgH of the effective pixel region on the imaging surface satisfy: TTL / ImgH < 1.27.

[0055] In this exemplary embodiment, the effective focal length f of the optical imaging lens and the maximum field angle FOV of the optical imaging lens satisfy: 5.5 mm < f * tan(FOV / 2) < 6.5 mm. The optical system satisfying the conditional expression features a large imaging surface and improves the pixels of the captured pictures. More specifically, the effective focal length f of the optical imaging lens and the maximum field angle FOV of the optical imaging lens satisfy: 5.5 mm < f * tan(FOV / 2) < 6.25 mm.

[0056] In this exemplary embodiment, the radius of curvature R1 of the object side surface of the first lens, the radius of curvature R2 of the image side surface of the first lens, and the effective focal length f1 of the first lens satisfy: 1.0 < (R1 + R2) / f1 < 1.5. By controlling the shape of the first lens, the MTF performance of the optical system can be improved. More specifically, the radius of curvature R1 of the object side surface of the first lens, the radius of curvature R2 of the image side surface of the first lens, and the effective focal length f1 of the first lens satisfy: 1.10 < (R1 + R2) / f1 < 1.35

[0057] In the present exemplary embodiment, the effective focal length f4 of the fourth lens and the effective focal length f6 of the sixth lens satisfy: 1.5 < (f4 + f6) / (f4 - f6) < 2.0. By reasonably controlling the optical power of the fourth lens and the sixth lens, the astigmatism of the system can be optimized. More specifically, the effective focal length f4 of the fourth lens and the effective focal length f6 of the sixth lens satisfy: 1.60 < (f4 + f6) / (f4 - f6) < 1.9.

[0058] In the present exemplary embodiment, the radius of curvature R6 of the image side of the third lens, the radius of curvature R5 of the object side of the third lens, and the effective focal length f3 of the third lens satisfy: 1.6 < f3 / (R6 - R5) < 4.2. Considering the distribution of the optical power of the third lens and controlling the shape of the third lens is beneficial to optimizing the chromatic aberration of the system and balancing the field curvature of the system. More specifically, the radius of curvature R6 of the image side of the third lens, the radius of curvature R5 of the object side of the third lens, and the effective focal length f3 of the third lens satisfy: 1.70 < f3 / (R6 - R5) < 4.10.

[0059] In the present exemplary embodiment, the effective focal length f5 of the fifth lens and the effective focal length f7 of the seventh lens satisfy: 2.5 < f5 / f7 < 4.6. By allocating the relationship between the optical powers of the fifth lens and the seventh lens, the field curvature of the system can be balanced and optimized, and at the same time, it is beneficial to improving the phenomenon of stray light at the end of the system. More specifically, the effective focal length f5 of the fifth lens and the effective focal length f7 of the seventh lens satisfy: 2.6 < f5 / f7 < 4.5.

[0060] In the present exemplary embodiment, the radius of curvature R11 of the object side of the sixth lens, the radius of curvature R12 of the image side of the sixth lens, the radius of curvature R13 of the object side of the seventh lens, and the radius of curvature R14 of the image side of the seventh lens satisfy: 0 < (R11 + R12) / (R13 + R14) < 1.5. By optimizing the shapes of the sixth lens and the seventh lens, the astigmatism of the system can be corrected, and the process performance of the system can be enhanced, which is beneficial to the later processing of the lens. More specifically, the radius of curvature R11 of the object side of the sixth lens, the radius of curvature R12 of the image side of the sixth lens, the radius of curvature R13 of the object side of the seventh lens, and the radius of curvature R14 of the image side of the seventh lens satisfy: 0.3 < (R11 + R12) / (R13 + R14) < 1.20.

[0061] In this exemplary embodiment, the combined focal length f12 of the first lens and the second lens and the combined focal length f56 of the fifth lens and the sixth lens satisfy: 0.7 < f12 / f56 < 1.2. By allocating the relationship between the combined optical power of the first two lenses and the combined optical power of the fifth and sixth lenses, while favorably optimizing the MTF performance of the system, the field curvature is balanced, and performance such as spherical aberration and chromatic aberration is corrected. More specifically, the combined focal length f12 of the first lens and the second lens and the combined focal length f56 of the fifth lens and the sixth lens satisfy: 0.8 < f12 / f56 < 1.1.

[0062] In this exemplary embodiment, the axial distance SAG51 between the intersection of the object side surface of the fifth lens and the optical axis and the vertex of the effective radius of the object side surface of the fifth lens, the axial distance SAG52 between the intersection of the image side surface of the fifth lens and the optical axis and the vertex of the effective radius of the image side surface of the fifth lens, the axial distance SAG61 between the intersection of the object side surface of the sixth lens and the optical axis and the vertex of the effective radius of the object side surface of the sixth lens, and the axial distance SAG62 between the intersection of the image side surface of the sixth lens and the optical axis and the vertex of the effective radius of the image side surface of the sixth lens satisfy: 0.7 < (SAG51 + SAG52) / (SAG61 + SAG62) < 1.2. By controlling the sagittal height relationship of the fifth lens and the sixth lens and optimizing the lens shapes of the fifth lens and the sixth lens, it is beneficial to lens processing and at the same time helps to balance the aberrations of the system. More specifically, the axial distance SAG51 between the intersection of the object side surface of the fifth lens and the optical axis and the vertex of the effective radius of the object side surface of the fifth lens, the axial distance SAG52 between the intersection of the image side surface of the fifth lens and the optical axis and the vertex of the effective radius of the image side surface of the fifth lens, the axial distance SAG61 between the intersection of the object side surface of the sixth lens and the optical axis and the vertex of the effective radius of the object side surface of the sixth lens, and the axial distance SAG62 between the intersection of the image side surface of the sixth lens and the optical axis and the vertex of the effective radius of the image side surface of the sixth lens satisfy: 0.9 < (SAG51 + SAG52) / (SAG61 + SAG62) < 1.1.

[0063] In this exemplary embodiment, the on-axis distance SAG71 between the intersection of the seventh lens' object-side surface and the optical axis and the vertex of the effective radius of the seventh lens' object-side surface, the on-axis distance SAG72 between the intersection of the seventh lens' image-side surface and the optical axis and the vertex of the effective radius of the ss seventh lens' image-side surface, and the air gap T67 on the optical axis between the sixth and seventh lenses satisfy the following relationship: -2.7 < (SAG71 + SAG72) / T67 < -2.2. This allows the seventh lens' sag height to be controlled while constraining the relationship between the sag height and the gaps between the sixth and seventh lenses, optimizing the system's field curvature by combining lens shape and gap. More specifically, the on-axis distance SAG71 between the intersection of the object side of the seventh lens and the optical axis to the effective radius vertex of the object side of the seventh lens, the on-axis distance SAG72 between the intersection of the image side of the seventh lens and the optical axis to the effective radius vertex of the image side of the ss seventh lens, and the air gap T67 on the optical axis between the sixth lens and the seventh lens satisfy: -2.60<(SAG71+SAG72) / T67<-2.40.

[0064] In this exemplary embodiment, the center thickness CT3 of the third lens on the optical axis, the edge thickness ET3 of the third lens, the center thickness CT4 of the fourth lens on the optical axis, and the edge thickness ET4 of the fourth lens satisfy the following conditions: 0.7 < (CT3 + ET3) / (CT4 + ET4) < 1.1. This condition optimization helps optimize and improve the system's chromatic aberration, spherical aberration, field curvature, distortion, and other performance while ensuring the lens's manufacturability. More specifically, the center thickness CT3 of the third lens on the optical axis, the edge thickness ET3 of the third lens, the center thickness CT4 of the fourth lens on the optical axis, and the edge thickness ET4 of the fourth lens satisfy the following conditions: 0.80 < (CT3 + ET3) / (CT4 + ET4) < 1.0.

[0065] In this exemplary embodiment, the edge thickness ET5 of the fifth lens, the edge thickness ET6 of the sixth lens, and the edge thickness ET7 of the seventh lens satisfy the following relationship: 1.6 < (ET5 + ET6) / ET7 < 2.1. By controlling the relationship between the edge thicknesses of the three rear lenses, external field of view performance is optimized while ensuring manufacturability. More specifically, the edge thickness ET5 of the fifth lens, the edge thickness ET6 of the sixth lens, and the edge thickness ET7 of the seventh lens satisfy the following relationship: 1.70 < (ET5 + ET6) / ET7 < 2.0.

[0066] In this exemplary embodiment, the object-side surface and the image-side surface of any lens among the first lens E1 to the seventh lens E7 are both aspherical surfaces. The surface shape x of each aspherical lens can be defined by, but is not limited to, the following aspherical surface formula:

[0067]

[0068] 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); k is the conic coefficient; Ai is the correction coefficient of the i-th order aspheric surface.

[0069] In this exemplary embodiment, the optical imaging lens may further include an aperture. The aperture may be positioned appropriately as needed, for example, between the object side and the first lens element. Optionally, the optical imaging lens may further include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element on the imaging surface.

[0070] The optical imaging lens according to the above-described embodiment of the present invention can utilize multiple lens elements, such as the seven lens elements described above. By rationally allocating the focal power, surface shape, center thickness of each lens, and on-axis spacing between lenses, the optical imaging lens has a larger imaging surface, offering a wide imaging range and high image quality, while also ensuring the ultra-thinness of the mobile phone.

[0071] In an exemplary embodiment, at least one of the mirror surfaces of each lens is an aspherical mirror surface, that is, at least one of the mirror surfaces from the object side surface of the first lens to the image side surface of the seventh lens is an aspherical mirror surface. The characteristic of an aspherical lens is that the curvature changes continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens with a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has a better curvature radius characteristic, and has the advantages of improving distortion aberration and improving astigmatism aberration. After adopting an aspherical lens, the aberration that occurs during imaging can be eliminated as much as possible, thereby improving the imaging quality. Optionally, at least one of the object side surface and the image side surface of each lens in the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens is an aspherical mirror surface. Optionally, the object side surface and the image side surface of each lens in the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens are all aspherical mirror surfaces.

[0072] However, those skilled in the art will appreciate that the number of lenses comprising the optical imaging lens may be varied to achieve the various results and advantages described herein without departing from the technical solutions claimed herein. For example, although seven lenses are described as an example in the embodiments, the optical imaging lens is not limited to including seven lenses and may include other numbers of lenses if desired.

[0073] Specific embodiments of the optical imaging lens applicable to the above embodiments will be further described below with reference to the accompanying drawings. Specific embodiment 1

[0075] Figure 1 FIG3 is a schematic diagram of the lens assembly structure of Example 1 of the optical imaging lens of the present invention. The optical imaging lens comprises, in order from the object side to the image side along the optical axis, an aperture stop STO, a first lens element E1, a second lens element E2, a third lens element E3, a fourth lens element E4, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, a filter E8, and an imaging surface S17.

[0076] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from an object sequentially passes through surfaces S1 to S16 and is ultimately imaged on an imaging surface S17.

[0077] As shown in Table 1, it is a table of basic parameters of the optical imaging lens of Example 1, wherein the units of curvature radius, thickness, and focal length are all millimeters (mm).

[0078]

[0079] Table 1

[0080] As shown in Table 2, in Example 1, the total effective focal length of the optical imaging lens is f = 6.50 mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens element E1 to the imaging surface S17 of the optical imaging lens is 7.93 mm, and half the diagonal length of the effective pixel area on the imaging surface S17 is ImgH = 6.33 mm.

[0081]

[0082]

[0083] Table 2

[0084] The optical imaging lens in Example 1 satisfies the following requirements:

[0085] ImgH*ImgH / TTL=5.05, where ImgH is half of the diagonal length of the effective pixel area on the imaging plane, and TTL is the axial distance from the object side of the first lens to the imaging plane.

[0086] V1=81.61, where V1 is the Abbe number of the first lens.

[0087] TTL / ImgH=1.25, where TTL is the on-axis distance from the object side of the first lens to the imaging plane, and ImgH is half the diagonal length of the effective pixel area on the imaging plane.

[0088] f*tan(FOV / 2)=6.19, where f is the effective focal length of the optical imaging lens, and FOV is the maximum field of view of the optical imaging lens.

[0089] (R1+R2) / f1=1.30, where R1 is the radius of curvature of the object side of the first lens, R2 is the radius of curvature of the image side of the first lens, and f1 is the effective focal length of the first lens.

[0090] (f4+f6) / (f4-f6)=1.63, where f4 is the effective focal length of the fourth lens, and f6 is the effective focal length of the sixth lens.

[0091] f3 / (R6-R5)=2.69, where R6 is the curvature radius of the image-side surface of the third lens, R5 is the curvature radius of the object-side surface of the third lens, and f3 is the effective focal length of the third lens.

[0092] f5 / f7=2.66, where f5 is the effective focal length of the fifth lens element, and f7 is the effective focal length of the seventh lens element.

[0093] (R11+R12) / (R13+R14)=1.04, wherein R11 is the curvature radius of the object side surface of the sixth lens, R12 is the curvature radius of the image side surface of the sixth lens, R13 is the curvature radius of the object side surface of the seventh lens, and R14 is the curvature radius of the image side surface of the seventh lens.

[0094] f12 / f56=0.92, where f12 is the combined focal length of the first and second lenses, and f56 is the combined focal length of the fifth and sixth lenses.

[0095] (SAG51+SAG52) / (SAG61+SAG62)=0.99, wherein SAG51 is the on-axis distance between the intersection of the objective side surface of the fifth lens and the optical axis and the vertex of the effective radius of the objective side surface of the fifth lens, SAG52 is the on-axis distance between the intersection of the image side surface of the fifth lens and the optical axis and the vertex of the effective radius of the image side surface of the fifth lens, SAG61 is the on-axis distance between the intersection of the objective side surface of the sixth lens and the optical axis and the vertex of the effective radius of the objective side surface of the sixth lens, and SAG62 is the on-axis distance between the intersection of the image side surface of the sixth lens and the optical axis and the vertex of the effective radius of the image side surface of the sixth lens.

[0096] (SAG71+SAG72) / T67=-2.56, where SAG71 is the on-axis distance between the intersection of the object side surface of the seventh lens and the optical axis and the vertex of the effective radius of the object side surface of the seventh lens, SAG72 is the on-axis distance between the intersection of the image side surface of the seventh lens and the optical axis and the vertex of the effective radius of the image side surface of the seventh lens, and T67 is the air spacing between the sixth lens and the seventh lens on the optical axis.

[0097] (CT3+ET3) / (CT4+ET4)=0.87, where CT3 is the center thickness of the third lens on the optical axis, ET3 is the edge thickness of the third lens, CT4 is the center thickness of the fourth lens on the optical axis, and ET4 is the edge thickness of the fourth lens.

[0098] (ET5+ET6) / ET7=1.95, where ET5 is the edge thickness of the fifth lens, ET6 is the edge thickness of the sixth lens, and ET7 is the edge thickness of the seventh lens.

[0099] In Example 1, the object side surface and the image side surface of any lens from the first lens E1 to the seventh lens E7 are aspherical surfaces. Table 3 shows the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A56, A57, A58, A5 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A 24 、A 26 、A 28 and A 30 .

[0100] Face number A4 A6 A8 A10 A12 A14 A16 S1 -1.9545E-03 1.0208E-02 -2.9437E-02 5.6002E-02 -7.2897E-02 6.7225E-02 -4.4943E-02 S2 -7.7013E-03 1.7674E-02 -7.8176E-02 2.2863E-01 -4.2576E-01 5.3237E-01 -4.6309E-01 S3 -2.1425E-02 1.7141E-02 -6.3855E-02 2.0858E-01 -4.2842E-01 5.8656E-01 -5.5646E-01 S4 -7.5753E-03 -8.3306E-03 8.3351E-02 -3.2662E-01 8.1459E-01 -1.3643E+00 1.5857E+00 S5 -2.8715E-02 6.5335E-02 -3.3926E-01 1.0712E+00 -2.2553E+00 3.2997E+00 -3.4403E+00 S6 -1.6106E-02 -4.4599E-03 -9.0466E-03 4.6073E-02 -9.1744E-02 1.0952E-01 -8.6274E-02 S7 -2.1076E-03 -2.7860E-02 6.5296E-02 -1.0638E-01 1.1781E-01 -9.0057E-02 4.8254E-02 S8 -9.8025E-03 -6.5855E-03 9.6357E-03 -9.9878E-03 6.7173E-03 -4.2073E-03 3.3049E-03 S9 -1.0718E-02 -1.7702E-02 3.9157E-02 -4.8066E-02 3.9597E-02 -2.3742E-02 1.0567E-02 S10 -6.0745E-02 -2.3164E-02 5.2200E-02 -4.3597E-02 2.3435E-02 -8.8613E-03 2.3999E-03 S11 5.7419E-03 -2.9273E-02 2.9051E-02 -2.1272E-02 1.0883E-02 -3.9226E-03 1.0064E-03 S12 4.3210E-02 -6.6151E-03 -1.1110E-02 8.0806E-03 -2.9893E-03 7.2074E-04 -1.2146E-04 S13 -1.1065E-01 4.8215E-02 -2.0135E-02 6.6415E-03 -1.5238E-03 2.4436E-04 -2.8083E-05 S14 -1.2096E-01 5.3844E-02 -2.0382E-02 5.7494E-03 -1.1781E-03 1.7654E-04 -1.9517E-05 Face number A18 A20 A22 A24 A26 A28 A30 S1 2.2060E-02 -7.9702E-03 2.0993E-03 -3.9267E-04 4.9444E-05 -3.7563E-06 1.2993E-07 S2 2.8581E-01 -1.2600E-01 3.9411E-02 -8.5437E-03 1.2205E-03 -1.0334E-04 3.9281E-06 S3 3.7350E-01 -1.7862E-01 6.0469E-02 -1.4156E-02 2.1793E-03 -1.9847E-04 8.1008E-06 S4 -1.3031E+00 7.6161E-01 -3.1438E-01 8.9507E-02 -1.6713E-02 1.8412E-03 -9.0661E-05 S5 2.5881E+00 -1.4069E+00 5.4697E-01 -1.4817E-01 2.6549E-02 -2.8262E-03 1.3530E-04 S6 4.6516E-02 -1.7306E-02 4.3729E-03 -7.1635E-04 6.8579E-05 -2.9110E-06 0.0000E+00 S7 -1.8097E-02 4.6436E-03 -7.7503E-04 7.5728E-05 -3.2865E-06 0.0000E+00 0.0000E+00 S8 -2.4136E-03 1.2603E-03 -4.4215E-04 1.0218E-04 -1.4959E-05 1.2596E-06 -4.6529E-08 S9 -3.5058E-03 8.6339E-04 -1.5548E-04 1.9853E-05 -1.6995E-06 8.7356E-08 -2.0367E-09 S10 -4.6499E-04 6.4024E-05 -6.1807E-06 4.0726E-07 -1.7386E-08 4.3179E-10 -4.7174E-12 S11 -1.8506E-04 2.4387E-05 -2.2795E-06 1.4734E-07 -6.2573E-09 1.5699E-10 -1.7630E-12 S12 1.4706E-05 -1.2896E-06 8.1349E-08 -3.6049E-09 1.0671E-10 -1.8975E-12 1.5350E-14 S13 2.3522E-06 -1.4426E-07 6.4237E-09 -2.0248E-10 4.2885E-12 -5.4804E-14 3.1961E-16 S14 1.5971E-06 -9.6293E-08 4.2157E-09 -1.3013E-10 2.6813E-12 -3.3060E-14 1.8430E-16

[0101] Table 3

[0102] Figure 2a The axial chromatic aberration curve of the optical imaging lens of Example 1 is shown, which indicates the deviation of the focal point of light of different wavelengths passing through the lens. Figure 2b The astigmatism curve of the optical imaging lens of Example 1 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 2c The distortion curve of the optical imaging lens of Example 1 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 2d The chromatic aberration curve of the optical imaging lens of Example 1 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. Figures 2a to 2d As shown, the optical imaging lens provided in Example 1 can achieve good imaging quality. Specific embodiment 2

[0104] Figure 3 FIG3 is a schematic diagram of the lens assembly structure of Example 2 of the optical imaging lens of the present invention. The optical imaging lens comprises, in order from the object side to the image side along the optical axis, an aperture stop STO, a first lens element E1, a second lens element E2, a third lens element E3, a fourth lens element E4, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, a filter E8, and an imaging surface S17.

[0105] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from an object sequentially passes through surfaces S1 to S16 and is ultimately imaged on an imaging surface S17.

[0106] Table 4 shows basic parameters of the optical imaging lens of Example 2, wherein the units of the curvature radius, thickness, and focal length are all in millimeters (mm).

[0107]

[0108] Table 4

[0109] As shown in Table 5, in Example 2, the total effective focal length of the optical imaging lens is f = 6.52 mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens element E1 to the imaging surface S17 of the optical imaging lens is 7.99 mm, and half the diagonal length of the effective pixel area on the imaging surface S17 is ImgH = 6.33 mm.

[0110]

[0111] Table 5

[0112] The optical imaging lens in Example 2 satisfies the following requirements:

[0113] ImgH*ImgH / TTL=5.01, where ImgH is half of the diagonal length of the effective pixel area on the imaging plane, and TTL is the axial distance from the object side of the first lens to the imaging plane.

[0114] V1=81.61, where V1 is the Abbe number of the first lens.

[0115] TTL / ImgH=1.26, where TTL is the on-axis distance from the object side of the first lens to the imaging plane, and ImgH is half the diagonal length of the effective pixel area on the imaging plane.

[0116] f*tan(FOV / 2)=6.19, where f is the effective focal length of the optical imaging lens, and FOV is the maximum field of view of the optical imaging lens.

[0117] (R1+R2) / f1=1.32, where R1 is the radius of curvature of the object side of the first lens, R2 is the radius of curvature of the image side of the first lens, and f1 is the effective focal length of the first lens.

[0118] (f4+f6) / (f4-f6)=1.71, where f4 is the effective focal length of the fourth lens, and f6 is the effective focal length of the sixth lens.

[0119] f3 / (R6-R5)=2.32, where R6 is the curvature radius of the image-side surface of the third lens, R5 is the curvature radius of the object-side surface of the third lens, and f3 is the effective focal length of the third lens.

[0120] f5 / f7=2.65, where f5 is the effective focal length of the fifth lens element, and f7 is the effective focal length of the seventh lens element.

[0121] (R11+R12) / (R13+R14)=1.15, wherein R11 is the curvature radius of the object side surface of the sixth lens, R12 is the curvature radius of the image side surface of the sixth lens, R13 is the curvature radius of the object side surface of the seventh lens, and R14 is the curvature radius of the image side surface of the seventh lens.

[0122] f12 / f56=0.92, where f12 is the combined focal length of the first and second lenses, and f56 is the combined focal length of the fifth and sixth lenses.

[0123] (SAG51+SAG52) / (SAG61+SAG62)=0.98, wherein SAG51 is the on-axis distance between the intersection of the objective side surface of the fifth lens and the optical axis and the vertex of the effective radius of the objective side surface of the fifth lens, SAG52 is the on-axis distance between the intersection of the image side surface of the fifth lens and the optical axis and the vertex of the effective radius of the image side surface of the fifth lens, SAG61 is the on-axis distance between the intersection of the objective side surface of the sixth lens and the optical axis and the vertex of the effective radius of the objective side surface of the sixth lens, and SAG62 is the on-axis distance between the intersection of the image side surface of the sixth lens and the optical axis and the vertex of the effective radius of the image side surface of the sixth lens.

[0124] (SAG71+SAG72) / T67=-2.55, where SAG71 is the on-axis distance between the intersection of the object side surface of the seventh lens and the optical axis and the vertex of the effective radius of the object side surface of the seventh lens, SAG72 is the on-axis distance between the intersection of the image side surface of the seventh lens and the optical axis and the vertex of the effective radius of the image side surface of the seventh lens, and T67 is the air spacing between the sixth lens and the seventh lens on the optical axis.

[0125] (CT3+ET3) / (CT4+ET4)=0.88, where CT3 is the center thickness of the third lens on the optical axis, ET3 is the edge thickness of the third lens, CT4 is the center thickness of the fourth lens on the optical axis, and ET4 is the edge thickness of the fourth lens.

[0126] (ET5+ET6) / ET7=1.96, where ET5 is the edge thickness of the fifth lens, ET6 is the edge thickness of the sixth lens, and ET7 is the edge thickness of the seventh lens.

[0127] In Example 2, the object-side surface and the image-side surface of any one of the first lens E1 to the seventh lens E7 are aspherical surfaces. Table 6 shows the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A56, A57, A58, 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A 24 、A 26 、A 28 and A 30 .

[0128] Face number A4 A6 A8 A10 A12 A14 A16 S1 -1.6470E-03 8.4757E-03 -2.3966E-02 4.4599E-02 -5.6678E-02 5.0986E-02 -3.3266E-02 S2 -7.7707E-03 1.2261E-03 1.3566E-03 1.7462E-02 -6.3252E-02 1.0733E-01 -1.1223E-01 S3 -2.3260E-02 1.6487E-02 -4.7085E-02 1.3869E-01 -2.6322E-01 3.3602E-01 -2.9912E-01 S4 -8.3909E-03 -2.3220E-03 4.3208E-02 -1.6850E-01 4.1970E-01 -7.0250E-01 8.1485E-01 S5 -2.7579E-02 4.6168E-02 -2.3788E-01 7.5219E-01 -1.5856E+00 2.3193E+00 -2.4151E+00 S6 -1.8129E-02 -8.3316E-03 1.6002E-02 -1.2860E-02 -5.7472E-03 2.4318E-02 -2.7244E-02 S7 -4.0007E-03 -2.6310E-02 6.7040E-02 -1.1100E-01 1.2318E-01 -9.4188E-02 5.0396E-02 S8 -8.8108E-03 -1.0587E-02 2.3680E-02 -4.1289E-02 5.2595E-02 -4.9866E-02 3.5024E-02 S9 -1.3235E-02 -4.1392E-03 4.5276E-03 4.8088E-03 -1.3521E-02 1.3273E-02 -7.8108E-03 S10 -6.3315E-02 -9.8804E-03 2.9095E-02 -2.0293E-02 7.8573E-03 -1.5802E-03 -3.2836E-05 S11 7.0842E-04 -1.9074E-02 1.8032E-02 -1.3372E-02 6.9377E-03 -2.5172E-03 6.4676E-04 S12 3.8498E-02 -1.9904E-03 -1.2989E-02 8.3917E-03 -2.9452E-03 6.8618E-04 -1.1295E-04 S13 -1.0669E-01 4.3912E-02 -1.6403E-02 4.8489E-03 -1.0116E-03 1.4932E-04 -1.5973E-05 S14 -1.1925E-01 5.2741E-02 -1.9768E-02 5.5385E-03 -1.1294E-03 1.6829E-04 -1.8462E-05 Face number A18 A20 A22 A24 A26 A28 A30 S1 1.5961E-02 -5.6499E-03 1.4617E-03 -2.6918E-04 3.3429E-05 -2.5075E-06 8.5678E-08 S2 7.8541E-02 -3.7969E-02 1.2749E-02 -2.9234E-03 4.3706E-04 -3.8413E-05 1.5059E-06 S3 1.8916E-01 -8.5429E-02 2.7338E-02 -6.0496E-03 8.7961E-04 -7.5547E-05 2.9019E-06 S4 -6.6711E-01 3.8779E-01 -1.5894E-01 4.4855E-02 -8.2874E-03 9.0169E-04 -4.3765E-05 S5 1.8133E+00 -9.8317E-01 3.8106E-01 -1.0286E-01 1.8355E-02 -1.9454E-03 9.2700E-05 S6 1.7637E-02 -7.3758E-03 2.0250E-03 -3.5299E-04 3.5447E-05 -1.5615E-06 0.0000E+00 S7 -1.8820E-02 4.7944E-03 -7.9213E-04 7.6387E-05 -3.2611E-06 0.0000E+00 0.0000E+00 S8 -1.8064E-02 6.7740E-03 -1.8185E-03 3.3970E-04 -4.1872E-05 3.0584E-06 -1.0017E-07 S9 3.0787E-03 -8.4105E-04 1.5979E-04 -2.0694E-05 1.7373E-06 -8.4818E-08 1.8155E-09 S10 1.2094E-04 -3.7640E-05 6.3873E-06 -6.7131E-07 4.3631E-08 -1.6133E-09 2.6033E-11 S11 -1.1883E-04 1.5639E-05 -1.4605E-06 9.4359E-08 -4.0068E-09 1.0054E-10 -1.1293E-12 S12 1.3471E-05 -1.1717E-06 7.3712E-08 -3.2706E-09 9.7153E-11 -1.7346E-12 1.4074E-14 S13 1.2597E-06 -7.3606E-08 3.1591E-09 -9.7027E-11 2.0220E-12 -2.5637E-14 1.4936E-16 S14 1.4956E-06 -8.9091E-08 3.8473E-09 -1.1700E-10 2.3732E-12 -2.8789E-14 1.5787E-16

[0129] Table 6

[0130] Figure 4a The axial chromatic aberration curve of the optical imaging lens of Example 2 is shown, which indicates the deviation of the focal point of light of different wavelengths passing through the lens. Figure 4b The astigmatism curve of the optical imaging lens of Example 2 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 4c The distortion curve of the optical imaging lens of Example 2 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 4d The chromatic aberration curve of the optical imaging lens of Example 2 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. Figures 4a to 4d As shown, the optical imaging lens provided in Example 2 can achieve good imaging quality. Specific embodiment 3

[0132] Figure 5 FIG3 is a schematic diagram of the lens assembly structure of Example 3 of the optical imaging lens of the present invention. The optical imaging lens comprises, in order from the object side to the image side along the optical axis, an aperture stop STO, a first lens element E1, a second lens element E2, a third lens element E3, a fourth lens element E4, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, a filter E8, and an imaging surface S17.

[0133] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from an object sequentially passes through surfaces S1 to S16 and is ultimately imaged on an imaging surface S17.

[0134] Table 7 shows basic parameters of the optical imaging lens of Example 3, where the units of curvature radius, thickness, and focal length are all in millimeters (mm).

[0135]

[0136] Table 7

[0137] As shown in Table 8, in Example 3, the total effective focal length of the optical imaging lens is f = 6.49 mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens element E1 to the imaging surface S17 of the optical imaging lens is 7.82 mm, and half the diagonal length of the effective pixel area on the imaging surface S17 is ImgH = 6.33 mm.

[0138]

[0139] Table 8

[0140] The optical imaging lens in Example 3 satisfies the following requirements:

[0141] ImgH*ImgH / TTL=5.12, where ImgH is half of the diagonal length of the effective pixel area on the imaging plane, and TTL is the axial distance from the object side of the first lens to the imaging plane.

[0142] V1=81.70, where V1 is the Abbe number of the first lens.

[0143] TTL / ImgH=1.24, where TTL is the on-axis distance from the object side of the first lens to the imaging plane, and ImgH is half the diagonal length of the effective pixel area on the imaging plane.

[0144] f*tan(FOV / 2)=6.18, where f is the effective focal length of the optical imaging lens, and FOV is the maximum field of view of the optical imaging lens.

[0145] (R1+R2) / f1=1.20, where R1 is the radius of curvature of the object side of the first lens, R2 is the radius of curvature of the image side of the first lens, and f1 is the effective focal length of the first lens.

[0146] (f4+f6) / (f4-f6)=1.80, where f4 is the effective focal length of the fourth lens, and f6 is the effective focal length of the sixth lens.

[0147] f3 / (R6-R5)=4.04, where R6 is the curvature radius of the image-side surface of the third lens, R5 is the curvature radius of the object-side surface of the third lens, and f3 is the effective focal length of the third lens.

[0148] f5 / f7=4.43, where f5 is the effective focal length of the fifth lens element, and f7 is the effective focal length of the seventh lens element.

[0149] (R11+R12) / (R13+R14)=0.42, wherein R11 is the radius of curvature of the object side surface of the sixth lens, R12 is the radius of curvature of the image side surface of the sixth lens, R13 is the radius of curvature of the object side surface of the seventh lens, and R14 is the radius of curvature of the image side surface of the seventh lens.

[0150] f12 / f56=0.99, where f12 is the combined focal length of the first and second lenses, and f56 is the combined focal length of the fifth and sixth lenses.

[0151] (SAG51+SAG52) / (SAG61+SAG62)=0.90, wherein SAG51 is the on-axis distance between the intersection of the objective side surface of the fifth lens and the optical axis and the vertex of the effective radius of the objective side surface of the fifth lens, SAG52 is the on-axis distance between the intersection of the image side surface of the fifth lens and the optical axis and the vertex of the effective radius of the image side surface of the fifth lens, SAG61 is the on-axis distance between the intersection of the objective side surface of the sixth lens and the optical axis and the vertex of the effective radius of the objective side surface of the sixth lens, and SAG62 is the on-axis distance between the intersection of the image side surface of the sixth lens and the optical axis and the vertex of the effective radius of the image side surface of the sixth lens.

[0152] (SAG71+SAG72) / T67=-2.45, where SAG71 is the on-axis distance between the intersection of the object side surface of the seventh lens and the optical axis and the vertex of the effective radius of the object side surface of the seventh lens, SAG72 is the on-axis distance between the intersection of the image side surface of the seventh lens and the optical axis and the vertex of the effective radius of the image side surface of the seventh lens, and T67 is the air spacing between the sixth lens and the seventh lens on the optical axis.

[0153] (CT3+ET3) / (CT4+ET4)=0.88, where CT3 is the center thickness of the third lens on the optical axis, ET3 is the edge thickness of the third lens, CT4 is the center thickness of the fourth lens on the optical axis, and ET4 is the edge thickness of the fourth lens.

[0154] (ET5+ET6) / ET7=1.77, where ET5 is the edge thickness of the fifth lens, ET6 is the edge thickness of the sixth lens, and ET7 is the edge thickness of the seventh lens.

[0155] In Example 3, the object-side surface and the image-side surface of any one of the first lens E1 to the seventh lens E7 are aspherical surfaces. Table 9 shows the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A56, A57, A58, 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A 24 、A 26 、A 28 and A 30 .

[0156]

[0157]

[0158] Table 9

[0159] Figure 6a The axial chromatic aberration curve of the optical imaging lens of Example 3 is shown, which indicates the deviation of the focal point of light of different wavelengths passing through the lens. Figure 6b The astigmatism curve of the optical imaging lens of Example 3 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 6c The distortion curve of the optical imaging lens of Example 3 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 6d The chromatic aberration curve of the optical imaging lens of Example 3 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. Figures 6a to 6dAs shown, the optical imaging lens provided in Example 3 can achieve good imaging quality. Specific embodiment 4

[0161] Figure 7 FIG4 is a schematic diagram of the lens assembly structure of Example 4 of the optical imaging lens of the present invention. The optical imaging lens comprises, in order from the object side to the image side along the optical axis, an aperture stop STO, a first lens element E1, a second lens element E2, a third lens element E3, a fourth lens element E4, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, a filter E8, and an imaging surface S17.

[0162] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from an object sequentially passes through surfaces S1 to S16 and is ultimately imaged on an imaging surface S17.

[0163] Table 10 shows basic parameters of the optical imaging lens of Example 4, where the units of curvature radius, thickness, and focal length are all in millimeters (mm).

[0164]

[0165]

[0166] Table 10

[0167] As shown in Table 11, in Example 4, the total effective focal length of the optical imaging lens is f = 6.49 mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens element E1 to the imaging surface S17 of the optical imaging lens is 7.91 mm, and half the diagonal length of the effective pixel area on the imaging surface S17 is ImgH = 6.33 mm.

[0168]

[0169] Table 11

[0170] The optical imaging lens in Example 4 satisfies the following requirements:

[0171] ImgH*ImgH / TTL=5.06, where ImgH is half of the diagonal length of the effective pixel area on the imaging plane, and TTL is the axial distance from the object side of the first lens to the imaging plane.

[0172] V1=81.70, where V1 is the Abbe number of the first lens.

[0173] TTL / ImgH=1.25, where TTL is the on-axis distance from the object side of the first lens to the imaging plane, and ImgH is half the diagonal length of the effective pixel area on the imaging plane.

[0174] f*tan(FOV / 2)=6.20, where f is the effective focal length of the optical imaging lens, and FOV is the maximum field of view of the optical imaging lens.

[0175] (R1+R2) / f1=1.25, where R1 is the radius of curvature of the object side of the first lens, R2 is the radius of curvature of the image side of the first lens, and f1 is the effective focal length of the first lens.

[0176] (f4+f6) / (f4-f6)=1.75, where f4 is the effective focal length of the fourth lens, and f6 is the effective focal length of the sixth lens.

[0177] f3 / (R6-R5)=1.73, where R6 is the curvature radius of the image-side surface of the third lens, R5 is the curvature radius of the object-side surface of the third lens, and f3 is the effective focal length of the third lens.

[0178] f5 / f7=4.14, where f5 is the effective focal length of the fifth lens element, and f7 is the effective focal length of the seventh lens element.

[0179] (R11+R12) / (R13+R14)=0.38, wherein R11 is the curvature radius of the object side surface of the sixth lens, R12 is the curvature radius of the image side surface of the sixth lens, R13 is the curvature radius of the object side surface of the seventh lens, and R14 is the curvature radius of the image side surface of the seventh lens.

[0180] f12 / f56=1.00, where f12 is the combined focal length of the first and second lenses, and f56 is the combined focal length of the fifth and sixth lenses.

[0181] (SAG51+SAG52) / (SAG61+SAG62)=0.90, wherein SAG51 is the on-axis distance between the intersection of the objective side surface of the fifth lens and the optical axis and the vertex of the effective radius of the objective side surface of the fifth lens, SAG52 is the on-axis distance between the intersection of the image side surface of the fifth lens and the optical axis and the vertex of the effective radius of the image side surface of the fifth lens, SAG61 is the on-axis distance between the intersection of the objective side surface of the sixth lens and the optical axis and the vertex of the effective radius of the objective side surface of the sixth lens, and SAG62 is the on-axis distance between the intersection of the image side surface of the sixth lens and the optical axis and the vertex of the effective radius of the image side surface of the sixth lens.

[0182] (SAG71+SAG72) / T67=-2.50, where SAG71 is the on-axis distance between the intersection of the object side surface of the seventh lens and the optical axis and the vertex of the effective radius of the object side surface of the seventh lens, SAG72 is the on-axis distance between the intersection of the image side surface of the seventh lens and the optical axis and the vertex of the effective radius of the image side surface of the seventh lens, and T67 is the air spacing between the sixth lens and the seventh lens on the optical axis.

[0183] (CT3+ET3) / (CT4+ET4)=0.91, where CT3 is the center thickness of the third lens on the optical axis, ET3 is the edge thickness of the third lens, CT4 is the center thickness of the fourth lens on the optical axis, and ET4 is the edge thickness of the fourth lens.

[0184] (ET5+ET6) / ET7=1.76, where ET5 is the edge thickness of the fifth lens, ET6 is the edge thickness of the sixth lens, and ET7 is the edge thickness of the seventh lens.

[0185] In Example 4, the object-side surface and the image-side surface of any one of the first lens E1 to the seventh lens E7 are aspherical surfaces. Table 12 shows the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A56, A57, A58 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A 24 、A 26 、A 28 and A 30 .

[0186]

[0187]

[0188] Table 12

[0189] Figure 8aThe axial chromatic aberration curve of the optical imaging lens of Example 4 is shown, which indicates the deviation of the focal point of light of different wavelengths passing through the lens. Figure 8b The astigmatism curve of the optical imaging lens of Example 4 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 8c The distortion curve of the optical imaging lens of Example 4 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 8d The chromatic aberration curve of the optical imaging lens of Example 4 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. Figures 8a to 8d As shown, the optical imaging lens provided in Example 4 can achieve good imaging quality. Specific embodiment 5

[0191] Figure 9 FIG4 is a schematic diagram of the lens assembly structure of Example 5 of the optical imaging lens of the present invention. The optical imaging lens comprises, in order from the object side to the image side along the optical axis, an aperture stop STO, a first lens element E1, a second lens element E2, a third lens element E3, a fourth lens element E4, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, a filter E8, and an imaging surface S17.

[0192] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from an object sequentially passes through surfaces S1 to S16 and is ultimately imaged on an imaging surface S17.

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

[0194]

[0195]

[0196] Table 13

[0197] As shown in Table 14, in Example 5, the total effective focal length of the optical imaging lens is f = 6.48 mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens element E1 to the imaging surface S17 of the optical imaging lens is 7.93 mm, and half the diagonal length of the effective pixel area on the imaging surface S17 is ImgH = 6.33 mm.

[0198]

[0199] Table 14

[0200] The optical imaging lens in Example 5 satisfies the following requirements:

[0201] ImgH*ImgH / TTL=5.05, where ImgH is half of the diagonal length of the effective pixel area on the imaging plane, and TTL is the axial distance from the object side of the first lens to the imaging plane.

[0202] V1=83.70, where V1 is the Abbe number of the first lens.

[0203] TTL / ImgH=1.25, where TTL is the on-axis distance from the object side of the first lens to the imaging plane, and ImgH is half the diagonal length of the effective pixel area on the imaging plane.

[0204] f*tan(FOV / 2)=6.19, where f is the effective focal length of the optical imaging lens, and FOV is the maximum field of view of the optical imaging lens.

[0205] (R1+R2) / f1=1.30, where R1 is the radius of curvature of the object side of the first lens, R2 is the radius of curvature of the image side of the first lens, and f1 is the effective focal length of the first lens.

[0206] (f4+f6) / (f4-f6)=1.87, where f4 is the effective focal length of the fourth lens, and f6 is the effective focal length of the sixth lens.

[0207] f3 / (R6-R5)=2.05, where R6 is the curvature radius of the image-side surface of the third lens, R5 is the curvature radius of the object-side surface of the third lens, and f3 is the effective focal length of the third lens.

[0208] f5 / f7=3.92, where f5 is the effective focal length of the fifth lens element, and f7 is the effective focal length of the seventh lens element.

[0209] (R11+R12) / (R13+R14)=0.38, wherein R11 is the curvature radius of the object side surface of the sixth lens, R12 is the curvature radius of the image side surface of the sixth lens, R13 is the curvature radius of the object side surface of the seventh lens, and R14 is the curvature radius of the image side surface of the seventh lens.

[0210] f12 / f56=1.00, where f12 is the combined focal length of the first and second lenses, and f56 is the combined focal length of the fifth and sixth lenses.

[0211] (SAG51+SAG52) / (SAG61+SAG62)=0.92, wherein SAG51 is the on-axis distance between the intersection of the objective side surface of the fifth lens and the optical axis and the vertex of the effective radius of the objective side surface of the fifth lens, SAG52 is the on-axis distance between the intersection of the image side surface of the fifth lens and the optical axis and the vertex of the effective radius of the image side surface of the fifth lens, SAG61 is the on-axis distance between the intersection of the objective side surface of the sixth lens and the optical axis and the vertex of the effective radius of the objective side surface of the sixth lens, and SAG62 is the on-axis distance between the intersection of the image side surface of the sixth lens and the optical axis and the vertex of the effective radius of the image side surface of the sixth lens.

[0212] (SAG71+SAG72) / T67=-2.48, where SAG71 is the on-axis distance between the intersection of the object side surface of the seventh lens and the optical axis and the vertex of the effective radius of the object side surface of the seventh lens, SAG72 is the on-axis distance between the intersection of the image side surface of the seventh lens and the optical axis and the vertex of the effective radius of the image side surface of the seventh lens, and T67 is the air spacing between the sixth lens and the seventh lens on the optical axis.

[0213] (CT3+ET3) / (CT4+ET4)=0.87, where CT3 is the center thickness of the third lens on the optical axis, ET3 is the edge thickness of the third lens, CT4 is the center thickness of the fourth lens on the optical axis, and ET4 is the edge thickness of the fourth lens.

[0214] (ET5+ET6) / ET7=1.83, where ET5 is the edge thickness of the fifth lens, ET6 is the edge thickness of the sixth lens, and ET7 is the edge thickness of the seventh lens.

[0215] In Example 5, the object-side surface and the image-side surface of any one of the first lens E1 to the seventh lens E7 are aspherical surfaces. Table 15 shows the high-order coefficients A4, A6, a8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A56, A57, A58 10 、A 12 、A 14 、A 16 、a 18 、A 20 、A 22 、A 24 、A 26 、A 28 and A 30 .

[0216]

[0217]

[0218] Table 15

[0219] Figure 10a The axial chromatic aberration curve of the optical imaging lens of Example 5 is shown, which indicates the deviation of the focal point of light of different wavelengths passing through the lens. Figure 10b The astigmatism curve of the optical imaging lens of Example 5 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 10c The distortion curve of the optical imaging lens of Example 5 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 10d The chromatic aberration curve of the optical imaging lens of Example 5 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. Figures 10a to 10d As shown, the optical imaging lens provided in Example 5 can achieve good imaging quality. Specific embodiment 6

[0221] Figure 11 FIG4 is a schematic diagram of the lens assembly structure of Example 6 of the optical imaging lens of the present invention. The optical imaging lens comprises, in order from the object side to the image side along the optical axis, an aperture stop STO, a first lens element E1, a second lens element E2, a third lens element E3, a fourth lens element E4, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, a filter E8, and an imaging surface S17.

[0222] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from an object sequentially passes through surfaces S1 to S16 and is ultimately imaged on an imaging surface S17.

[0223] Table 16 shows basic parameters of the optical imaging lens of Example 6, where the units of curvature radius, thickness, and focal length are all in millimeters (mm).

[0224]

[0225]

[0226] Table 16

[0227] As shown in Table 17, in Example 6, the total effective focal length of the optical imaging lens is f = 6.48 mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens element E1 to the imaging surface S17 of the optical imaging lens is 7.95 mm, and half the diagonal length of the effective pixel area on the imaging surface S17 is ImgH = 6.33 mm.

[0228]

[0229] Table 17

[0230] The optical imaging lens in Example 6 satisfies the following requirements:

[0231] ImgH*ImgH / TTL=5.04, where ImgH is half of the diagonal length of the effective pixel area on the imaging plane, and TTL is the axial distance from the object side of the first lens to the imaging plane.

[0232] V1=82.70, where V1 is the Abbe number of the first lens.

[0233] TTL / ImgH=1.26, where TTL is the on-axis distance from the object side of the first lens to the imaging plane, and ImgH is half the diagonal length of the effective pixel area on the imaging plane.

[0234] f*tan(FOV / 2)=6.19, where f is the effective focal length of the optical imaging lens, and FOV is the maximum field of view of the optical imaging lens.

[0235] (R1+R2) / f1=1.32, where R1 is the radius of curvature of the object side of the first lens, R2 is the radius of curvature of the image side of the first lens, and f1 is the effective focal length of the first lens.

[0236] (f4+f6) / (f4-f6)=1.85, where f4 is the effective focal length of the fourth lens, and f6 is the effective focal length of the sixth lens.

[0237] f3 / (R6-R5)=1.87, where R6 is the curvature radius of the image-side surface of the third lens, R5 is the curvature radius of the object-side surface of the third lens, and f3 is the effective focal length of the third lens.

[0238] f5 / f7=3.88, where f5 is the effective focal length of the fifth lens element, and f7 is the effective focal length of the seventh lens element.

[0239] (R11+R12) / (R13+R14)=0.38, wherein R11 is the curvature radius of the object side surface of the sixth lens, R12 is the curvature radius of the image side surface of the sixth lens, R13 is the curvature radius of the object side surface of the seventh lens, and R14 is the curvature radius of the image side surface of the seventh lens.

[0240] f12 / f56=1.01, where f12 is the combined focal length of the first and second lenses, and f56 is the combined focal length of the fifth and sixth lenses.

[0241] (SAG51+SAG52) / (SAG61+SAG62)=0.92, wherein SAG51 is the on-axis distance between the intersection of the objective side surface of the fifth lens and the optical axis and the vertex of the effective radius of the objective side surface of the fifth lens, SAG52 is the on-axis distance between the intersection of the image side surface of the fifth lens and the optical axis and the vertex of the effective radius of the image side surface of the fifth lens, SAG61 is the on-axis distance between the intersection of the objective side surface of the sixth lens and the optical axis and the vertex of the effective radius of the objective side surface of the sixth lens, and SAG62 is the on-axis distance between the intersection of the image side surface of the sixth lens and the optical axis and the vertex of the effective radius of the image side surface of the sixth lens.

[0242] (SAG71+SAG72) / T67=-2.45, where SAG71 is the on-axis distance between the intersection of the object side surface of the seventh lens and the optical axis and the vertex of the effective radius of the object side surface of the seventh lens, SAG72 is the on-axis distance between the intersection of the image side surface of the seventh lens and the optical axis and the vertex of the effective radius of the image side surface of the seventh lens, and T67 is the air spacing between the sixth lens and the seventh lens on the optical axis.

[0243] (CT3+ET3) / (CT4+ET4)=0.86, where CT3 is the center thickness of the third lens on the optical axis, ET3 is the edge thickness of the third lens, CT4 is the center thickness of the fourth lens on the optical axis, and ET4 is the edge thickness of the fourth lens.

[0244] (ET5+ET6) / ET7=1.83, where ET5 is the edge thickness of the fifth lens, ET6 is the edge thickness of the sixth lens, and ET7 is the edge thickness of the seventh lens.

[0245] In Example 6, the object-side surface and the image-side surface of any one of the first lens E1 to the seventh lens E7 are aspherical surfaces. Table 18 shows the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A56, A57, A58 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A 24 、A 26 、A 28 and A 30 .

[0246]

[0247]

[0248] Table 18

[0249] Figure 12a The axial chromatic aberration curve of the optical imaging lens of Example 6 is shown, which indicates the deviation of the focal point of light of different wavelengths passing through the lens. Figure 12b The astigmatism curve of the optical imaging lens of Example 6 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 12c The distortion curve of the optical imaging lens of Example 6 is shown, which represents the distortion values ​​corresponding to different image heights. Figure 12d The chromatic aberration curve of the optical imaging lens of Example 6 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. Figures 12a to 12d As shown, the optical imaging lens provided in Example 6 can achieve good imaging quality. Specific embodiment 7

[0251] Figure 13 FIG4 is a schematic diagram of the lens assembly structure of Example 7 of the optical imaging lens of the present invention. The optical imaging lens comprises, in order from the object side to the image side along the optical axis, an aperture stop STO, a first lens element E1, a second lens element E2, a third lens element E3, a fourth lens element E4, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, a filter E8, and an imaging surface S17.

[0252] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from an object sequentially passes through surfaces S1 to S16 and is ultimately imaged on an imaging surface S17.

[0253] Table 19 shows basic parameters of the optical imaging lens of Example 7, where the units of curvature radius, thickness, and focal length are all in millimeters (mm).

[0254]

[0255] Table 19

[0256] As shown in Table 20, in Example 7, the total effective focal length of the optical imaging lens is f = 6.48 mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens element E1 to the imaging surface S17 of the optical imaging lens is 7.95 mm, and half the diagonal length of the effective pixel area on the imaging surface S17 is ImgH = 6.33 mm.

[0257]

[0258] Table 20

[0259] The optical imaging lens in Example 7 satisfies the following requirements:

[0260] ImgH*ImgH / TTL=5.04, where ImgH is half of the diagonal length of the effective pixel area on the imaging plane, and TTL is the axial distance from the object side of the first lens to the imaging plane.

[0261] V1=84.00, where V1 is the Abbe number of the first lens.

[0262] TTL / ImgH=1.26, where TTL is the on-axis distance from the object side of the first lens to the imaging plane, and ImgH is half the diagonal length of the effective pixel area on the imaging plane.

[0263] f*tan(FOV / 2)=6.19, where f is the effective focal length of the optical imaging lens, and FOV is the maximum field of view of the optical imaging lens.

[0264] (R1+R2) / f1=1.33, where R1 is the radius of curvature of the object side of the first lens, R2 is the radius of curvature of the image side of the first lens, and f1 is the effective focal length of the first lens.

[0265] (f4+f6) / (f4-f6)=1.87, where f4 is the effective focal length of the fourth lens, and f6 is the effective focal length of the sixth lens.

[0266] f3 / (R6-R5)=1.81, where R6 is the curvature radius of the image-side surface of the third lens, R5 is the curvature radius of the object-side surface of the third lens, and f3 is the effective focal length of the third lens.

[0267] f5 / f7=3.84, where f5 is the effective focal length of the fifth lens element, and f7 is the effective focal length of the seventh lens element.

[0268] (R11+R12) / (R13+R14)=0.38, wherein R11 is the curvature radius of the object side surface of the sixth lens, R12 is the curvature radius of the image side surface of the sixth lens, R13 is the curvature radius of the object side surface of the seventh lens, and R14 is the curvature radius of the image side surface of the seventh lens.

[0269] f12 / f56=1.01, where f12 is the combined focal length of the first and second lenses, and f56 is the combined focal length of the fifth and sixth lenses.

[0270] (SAG51+SAG52) / (SAG61+SAG62)=0.92, wherein SAG51 is the on-axis distance between the intersection of the objective side surface of the fifth lens and the optical axis and the vertex of the effective radius of the objective side surface of the fifth lens, SAG52 is the on-axis distance between the intersection of the image side surface of the fifth lens and the optical axis and the vertex of the effective radius of the image side surface of the fifth lens, SAG61 is the on-axis distance between the intersection of the objective side surface of the sixth lens and the optical axis and the vertex of the effective radius of the objective side surface of the sixth lens, and SAG62 is the on-axis distance between the intersection of the image side surface of the sixth lens and the optical axis and the vertex of the effective radius of the image side surface of the sixth lens.

[0271] (SAG71+SAG72) / T67=-2.45, where SAG71 is the on-axis distance between the intersection of the object side surface of the seventh lens and the optical axis and the vertex of the effective radius of the object side surface of the seventh lens, SAG72 is the on-axis distance between the intersection of the image side surface of the seventh lens and the optical axis and the vertex of the effective radius of the image side surface of the seventh lens, and T67 is the air spacing between the sixth lens and the seventh lens on the optical axis.

[0272] (CT3+ET3) / (CT4+ET4)=0.86, where CT3 is the center thickness of the third lens on the optical axis, ET3 is the edge thickness of the third lens, CT4 is the center thickness of the fourth lens on the optical axis, and ET4 is the edge thickness of the fourth lens.

[0273] (ET5+ET6) / ET7=1.84, where ET5 is the edge thickness of the fifth lens, ET6 is the edge thickness of the sixth lens, and ET7 is the edge thickness of the seventh lens.

[0274] In Example 7, the object-side surface and the image-side surface of any one of the first lens E1 to the seventh lens E7 are aspherical surfaces. Table 21 shows the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A 24 、A 26 、A 28 and A 30 .

[0275]

[0276]

[0277] Table 21

[0278] Figure 14a The axial chromatic aberration curve of the optical imaging lens of Example 7 is shown, which indicates the deviation of the focal point of light of different wavelengths passing through the lens. Figure 14b The astigmatism curve of the optical imaging lens of Example 7 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 14c The distortion curve of the optical imaging lens of Example 7 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 14d The chromatic aberration curve of the optical imaging lens of Example 7 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. Figures 14a to 14d As shown, the optical imaging lens provided in Example 7 can achieve good imaging quality. Specific embodiment 8

[0280] Figure 15 FIG4 is a schematic diagram of the lens assembly structure of Example 8 of the optical imaging lens of the present invention. The optical imaging lens comprises, in order from the object side to the image side along the optical axis, an aperture stop STO, a first lens element E1, a second lens element E2, a third lens element E3, a fourth lens element E4, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, a filter E8, and an imaging surface S17.

[0281] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from an object sequentially passes through surfaces S1 to S16 and is ultimately imaged on an imaging surface S17.

[0282] Table 22 shows basic parameters of the optical imaging lens of Example 8, where the units of curvature radius, thickness, and focal length are all in millimeters (mm).

[0283]

[0284] Table 22

[0285] As shown in Table 23, in Example 8, the total effective focal length of the optical imaging lens is f = 6.48 mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens element E1 to the imaging surface S17 of the optical imaging lens is 7.95 mm, and half the diagonal length of the effective pixel area on the imaging surface S17 is ImgH = 6.33 mm.

[0286]

[0287] Table 23

[0288] The optical imaging lens in Example 8 satisfies the following requirements:

[0289] ImgH*ImgH / TTL=5.04, where ImgH is half of the diagonal length of the effective pixel area on the imaging plane, and TTL is the axial distance from the object side of the first lens to the imaging plane.

[0290] V1=84.50, where V1 is the Abbe number of the first lens.

[0291] TTL / ImgH=1.26, where TTL is the on-axis distance from the object side of the first lens to the imaging plane, and ImgH is half the diagonal length of the effective pixel area on the imaging plane.

[0292] f*tan(FOV / 2)=6.19, where f is the effective focal length of the optical imaging lens, and FOV is the maximum field of view of the optical imaging lens.

[0293] (R1+R2) / f1=1.31, where R1 is the radius of curvature of the object side of the first lens, R2 is the radius of curvature of the image side of the first lens, and f1 is the effective focal length of the first lens.

[0294] (f4+f6) / (f4-f6)=1.86, where f4 is the effective focal length of the fourth lens element, and f6 is the effective focal length of the sixth lens element.

[0295] f3 / (R6-R5)=1.71, where R6 is the curvature radius of the image-side surface of the third lens, R5 is the curvature radius of the object-side surface of the third lens, and f3 is the effective focal length of the third lens.

[0296] f5 / f7=3.72, where f5 is the effective focal length of the fifth lens element, and f7 is the effective focal length of the seventh lens element.

[0297] (R11+R12) / (R13+R14)=0.38, wherein R11 is the curvature radius of the object side surface of the sixth lens, R12 is the curvature radius of the image side surface of the sixth lens, R13 is the curvature radius of the object side surface of the seventh lens, and R14 is the curvature radius of the image side surface of the seventh lens.

[0298] f12 / f56=1.01, where f12 is the combined focal length of the first and second lenses, and f56 is the combined focal length of the fifth and sixth lenses.

[0299] (SAG51+SAG52) / (SAG61+SAG62)=0.91, wherein SAG51 is the on-axis distance between the intersection of the objective side surface of the fifth lens and the optical axis and the vertex of the effective radius of the objective side surface of the fifth lens, SAG52 is the on-axis distance between the intersection of the image side surface of the fifth lens and the optical axis and the vertex of the effective radius of the image side surface of the fifth lens, SAG61 is the on-axis distance between the intersection of the objective side surface of the sixth lens and the optical axis and the vertex of the effective radius of the objective side surface of the sixth lens, and SAG62 is the on-axis distance between the intersection of the image side surface of the sixth lens and the optical axis and the vertex of the effective radius of the image side surface of the sixth lens.

[0300] (SAG71+SAG72) / T67=-2.46, where SAG71 is the on-axis distance between the intersection of the object side surface of the seventh lens and the optical axis and the vertex of the effective radius of the object side surface of the seventh lens, SAG72 is the on-axis distance between the intersection of the image side surface of the seventh lens and the optical axis and the vertex of the effective radius of the image side surface of the seventh lens, and T67 is the air spacing between the sixth lens and the seventh lens on the optical axis.

[0301] (CT3+ET3) / (CT4+ET4)=0.87, where CT3 is the center thickness of the third lens on the optical axis, ET3 is the edge thickness of the third lens, CT4 is the center thickness of the fourth lens on the optical axis, and ET4 is the edge thickness of the fourth lens.

[0302] (ET5+ET6) / ET7=1.83, where ET5 is the edge thickness of the fifth lens, ET6 is the edge thickness of the sixth lens, and ET7 is the edge thickness of the seventh lens.

[0303] In Example 8, the object-side surface and the image-side surface of any one of the first lens E1 to the seventh lens E7 are aspherical surfaces. Table 24 shows the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A56, A57, A58 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A 24 、A 26 、A 28 and A 30 .

[0304] Face number A4 A6 A8 A10 A12 A14 A16 S1 -1.0715E-03 2.7455E-03 -3.7935E-03 3.3714E-03 -1.9117E-03 6.8845E-04 -1.5232E-04 S2 -1.0116E-02 3.8263E-03 3.6470E-03 -6.0528E-03 4.3911E-03 -1.8834E-03 4.8029E-04 S3 -2.1300E-02 1.7034E-02 -5.7832E-02 1.8092E-01 -3.5783E-01 4.7175E-01 -4.3157E-01 S4 -5.9635E-03 2.8203E-03 9.6020E-03 -6.4998E-02 2.1014E-01 -4.0807E-01 5.1959E-01 S5 -3.6041E-02 9.2454E-02 -3.8458E-01 1.0519E+00 -1.9757E+00 2.6156E+00 -2.4915E+00 S6 -4.2276E-02 4.0403E-02 -1.9391E-02 -1.1939E-01 3.7436E-01 -5.7854E-01 5.6573E-01 S7 -2.4726E-02 2.1686E-03 9.5208E-02 -3.3319E-01 6.3158E-01 -7.7387E-01 6.4939E-01 S8 -9.5867E-03 -1.9665E-02 5.9469E-02 -1.1446E-01 1.4910E-01 -1.3798E-01 9.2850E-02 S9 -2.1056E-02 2.9025E-02 -6.9218E-02 1.1931E-01 -1.3764E-01 1.0851E-01 -6.0422E-02 S10 -8.1548E-02 3.8679E-02 -2.8080E-02 2.7056E-02 -2.0572E-02 1.0662E-02 -3.7975E-03 S11 -1.3189E-02 -1.8314E-03 1.9401E-03 -1.8682E-03 1.0852E-03 -3.9350E-04 9.1086E-05 S12 2.7015E-02 -1.5609E-02 3.0558E-03 -6.8933E-04 4.6312E-04 -2.2349E-04 6.2883E-05 S13 -1.0692E-01 3.7261E-02 -1.1523E-02 2.6162E-03 -3.2659E-04 8.8786E-06 3.7297E-06 S14 -1.1379E-01 4.6136E-02 -1.5996E-02 4.2064E-03 -8.1242E-04 1.1570E-04 -1.2242E-05 Face number A18 A20 A22 A24 A26 A28 A30 S1 1.8832E-05 -1.0019E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 -6.6944E-05 3.9070E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 2.7987E-01 -1.2953E-01 4.2491E-02 -9.6455E-03 1.4403E-03 -1.2721E-04 5.0334E-06 S4 -4.5299E-01 2.7545E-01 -1.1681E-01 3.3874E-02 -6.4039E-03 7.1116E-04 -3.5187E-05 S5 1.7265E+00 -8.7097E-01 3.1642E-01 -8.0610E-02 1.3661E-02 -1.3827E-03 6.3231E-05 S6 -3.7545E-01 1.7352E-01 -5.5996E-02 1.2387E-02 -1.7920E-03 1.5279E-04 -5.8240E-06 S7 -3.8291E-01 1.6009E-01 -4.7215E-02 9.6054E-03 -1.2830E-03 1.0128E-04 -3.5818E-06 S8 -4.5833E-02 1.6562E-02 -4.3230E-03 7.9205E-04 -9.6481E-05 7.0069E-06 -2.2929E-07 S9 2.4213E-02 -7.0185E-03 1.4589E-03 -2.1197E-04 2.0422E-05 -1.1709E-06 3.0202E-08 S10 9.4401E-04 -1.6439E-04 1.9881E-05 -1.6293E-06 8.5960E-08 -2.6216E-09 3.4894E-11 S11 -1.3931E-05 1.4526E-06 -1.0522E-07 5.3028E-09 -1.8095E-10 3.8266E-12 -3.8272E-14 S12 -1.1219E-05 1.3362E-06 -1.0825E-07 5.9135E-09 -2.0900E-10 4.3231E-12 -3.9789E-14 S13 -6.7761E-07 6.1549E-08 -3.5146E-09 1.3141E-10 -3.1408E-12 4.3718E-14 -2.7036E-16 S14 9.6432E-07 -5.6224E-08 2.3891E-09 -7.1816E-11 1.4454E-12 -1.7459E-14 9.5618E-17

[0305] Table 24

[0306] Figure 16a The axial chromatic aberration curve of the optical imaging lens of Example 8 is shown, which indicates the deviation of the focal point of light of different wavelengths passing through the lens. Figure 16b The astigmatism curve of the optical imaging lens of Example 8 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 16c The distortion curve of the optical imaging lens of Example 8 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 16d The chromatic aberration curve of the optical imaging lens of Example 8 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. Figures 16a to 16d As shown, the optical imaging lens provided in Example 8 can achieve good imaging quality. Specific embodiment 9

[0308] Figure 17 FIG4 is a schematic diagram of the lens assembly structure of Example 9 of the optical imaging lens of the present invention. The optical imaging lens comprises, in order from the object side to the image side along the optical axis, an aperture stop STO, a first lens element E1, a second lens element E2, a third lens element E3, a fourth lens element E4, a fifth lens element E5, a sixth lens element E6, a seventh lens element E7, a filter E8, and an imaging surface S17.

[0309] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The filter E8 has an object-side surface S15 and an image-side surface S16. Light from an object sequentially passes through surfaces S1 to S16 and is ultimately imaged on an imaging surface S17.

[0310] Table 25 shows basic parameters of the optical imaging lens of Example 9, where the units of curvature radius, thickness, and focal length are all in millimeters (mm).

[0311]

[0312] Table 25

[0313] As shown in Table 26, in Example 9, the total effective focal length of the optical imaging lens is f = 6.48 mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens element E1 to the imaging surface S17 of the optical imaging lens is 7.95 mm, and half the diagonal length of the effective pixel area on the imaging surface S17 is ImgH = 6.33 mm.

[0314]

[0315]

[0316] Table 26

[0317] The optical imaging lens in Example 9 satisfies the following requirements:

[0318] ImgH*ImgH / TTL=5.04, where ImgH is half of the diagonal length of the effective pixel area on the imaging plane, and TTL is the axial distance from the object side of the first lens to the imaging plane.

[0319] V1=86.00, where V1 is the Abbe number of the first lens.

[0320] TTL / ImgH=1.26, where TTL is the on-axis distance from the object side of the first lens to the imaging plane, and ImgH is half the diagonal length of the effective pixel area on the imaging plane.

[0321] f*tan(FOV / 2)=6.19, where f is the effective focal length of the optical imaging lens, and FOV is the maximum field of view of the optical imaging lens.

[0322] (R1+R2) / f1=1.27, where R1 is the radius of curvature of the object side of the first lens, R2 is the radius of curvature of the image side of the first lens, and f1 is the effective focal length of the first lens.

[0323] (f4+f6) / (f4-f6)=1.82, where f4 is the effective focal length of the fourth lens, and f6 is the effective focal length of the sixth lens.

[0324] f3 / (R6-R5)=1.73, where R6 is the curvature radius of the image-side surface of the third lens, R5 is the curvature radius of the object-side surface of the third lens, and f3 is the effective focal length of the third lens.

[0325] f5 / f7=3.53, where f5 is the effective focal length of the fifth lens element, and f7 is the effective focal length of the seventh lens element.

[0326] (R11+R12) / (R13+R14)=0.41, wherein R11 is the curvature radius of the object side surface of the sixth lens, R12 is the curvature radius of the image side surface of the sixth lens, R13 is the curvature radius of the object side surface of the seventh lens, and R14 is the curvature radius of the image side surface of the seventh lens.

[0327] f12 / f56=1.02, where f12 is the combined focal length of the first and second lenses, and f56 is the combined focal length of the fifth and sixth lenses.

[0328] (SAG51+SAG52) / (SAG61+SAG62)=0.88, wherein SAG51 is the on-axis distance between the intersection of the objective side surface of the fifth lens and the optical axis and the vertex of the effective radius of the objective side surface of the fifth lens, SAG52 is the on-axis distance between the intersection of the image side surface of the fifth lens and the optical axis and the vertex of the effective radius of the image side surface of the fifth lens, SAG61 is the on-axis distance between the intersection of the objective side surface of the sixth lens and the optical axis and the vertex of the effective radius of the objective side surface of the sixth lens, and SAG62 is the on-axis distance between the intersection of the image side surface of the sixth lens and the optical axis and the vertex of the effective radius of the image side surface of the sixth lens.

[0329] (SAG71+SAG72) / T67=-2.47, where SAG71 is the on-axis distance between the intersection of the object side surface of the seventh lens and the optical axis and the vertex of the effective radius of the object side surface of the seventh lens, SAG72 is the on-axis distance between the intersection of the image side surface of the seventh lens and the optical axis and the vertex of the effective radius of the image side surface of the seventh lens, and T67 is the air spacing between the sixth lens and the seventh lens on the optical axis.

[0330] (CT3+ET3) / (CT4+ET4)=0.88, where CT3 is the center thickness of the third lens on the optical axis, ET3 is the edge thickness of the third lens, CT4 is the center thickness of the fourth lens on the optical axis, and ET4 is the edge thickness of the fourth lens.

[0331] (ET5+ET6) / ET7=1.83, where ET5 is the edge thickness of the fifth lens, ET6 is the edge thickness of the sixth lens, and ET7 is the edge thickness of the seventh lens.

[0332] In Example 9, the object-side surface and the image-side surface of any one of the first lens E1 to the seventh lens E7 are aspherical surfaces. Table 27 shows the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A56, A57, A58 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A 24 、A26 、A 28 and A 30 .

[0333] Face number A4 A6 A8 A10 A12 A14 A16 S1 -1.1889E-03 3.0604E-03 -4.2984E-03 3.9581E-03 -2.3603E-03 8.9865E-04 -2.0983E-04 S2 -9.8217E-03 4.4002E-03 1.5664E-03 -3.0823E-03 2.0588E-03 -8.0653E-04 1.8830E-04 S3 -2.0190E-02 2.2590E-02 -9.5043E-02 3.0130E-01 -6.0465E-01 8.1308E-01 -7.6084E-01 S4 -4.7440E-03 3.4741E-03 9.0815E-03 -8.1286E-02 2.7344E-01 -5.3220E-01 6.7368E-01 S5 -3.5271E-02 9.0896E-02 -3.7628E-01 1.0275E+00 -1.9345E+00 2.5725E+00 -2.4641E+00 S6 -1.3862E-02 1.1657E-02 3.6444E-02 -2.2773E-01 5.2831E-01 -7.3291E-01 6.7649E-01 S7 -2.5323E-02 -3.3699E-03 1.2227E-01 -3.8461E-01 6.8392E-01 -7.9985E-01 6.4780E-01 S8 -1.0045E-02 -1.7357E-02 5.2493E-02 -1.0124E-01 1.3256E-01 -1.2335E-01 8.3378E-02 S9 -1.9909E-02 2.3107E-02 -5.5000E-02 9.9715E-02 -1.1996E-01 9.7574E-02 -5.5693E-02 S10 -8.3459E-02 3.9444E-02 -2.5012E-02 2.1348E-02 -1.5337E-02 7.5989E-03 -2.5677E-03 S11 -1.5277E-02 1.0443E-03 -1.2557E-05 -8.1920E-04 6.0866E-04 -2.2645E-04 4.8337E-05 S12 2.6738E-02 -1.5892E-02 4.1994E-03 -1.6331E-03 8.8647E-04 -3.4857E-04 8.8914E-05 S13 -1.0913E-01 3.8000E-02 -1.1440E-02 2.4382E-03 -2.4962E-04 -9.6893E-06 6.6291E-06 S14 -1.1552E-01 4.6756E-02 -1.6048E-02 4.1695E-03 -7.9663E-04 1.1250E-04 -1.1835E-05 Face number A18 A20 A22 A24 A26 A28 A30 S1 2.7233E-05 -1.5076E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 -2.3791E-05 1.2164E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 5.0547E-01 -2.3993E-01 8.0789E-02 -1.8842E-02 2.8932E-03 -2.6306E-04 1.0726E-05 S4 -5.8305E-01 3.5212E-01 -1.4845E-01 4.2842E-02 -8.0687E-03 8.9346E-04 -4.4117E-05 S5 1.7179E+00 -8.7203E-01 3.1871E-01 -8.1644E-02 1.3905E-02 -1.4134E-03 6.4855E-05 S6 -4.3318E-01 1.9550E-01 -6.2057E-02 1.3569E-02 -1.9463E-03 1.6490E-04 -6.2560E-06 S7 -3.7161E-01 1.5204E-01 -4.4068E-02 8.8387E-03 -1.1667E-03 9.1180E-05 -3.1971E-06 S8 -4.1270E-02 1.4929E-02 -3.8963E-03 7.1322E-04 -8.6770E-05 6.2938E-06 -2.0574E-07 S9 2.2787E-02 -6.7256E-03 1.4205E-03 -2.0933E-04 2.0421E-05 -1.1837E-06 3.0820E-08 S10 5.9601E-04 -9.4566E-05 1.0028E-05 -6.7480E-07 2.5597E-08 -3.7896E-10 -2.2163E-12 S11 -6.1056E-06 4.3878E-07 -1.3592E-08 -3.2524E-10 4.2377E-11 -1.3255E-12 1.4115E-14 S12 -1.5120E-05 1.7582E-06 -1.4081E-07 7.6578E-09 -2.7058E-10 5.6100E-12 -5.1841E-14 S13 -9.8759E-07 8.4765E-08 -4.7349E-09 1.7559E-10 -4.1912E-12 5.8501E-14 -3.6372E-16 S14 9.2892E-07 -5.4072E-08 2.2975E-09 -6.9136E-11 1.3943E-12 -1.6888E-14 9.2804E-17

[0334] Table 27

[0335] Figure 18a The axial chromatic aberration curve of the optical imaging lens of Example 9 is shown, which indicates the deviation of the focal point of light of different wavelengths passing through the lens. Figure 18b The astigmatism curve of the optical imaging lens of Example 9 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 18c The distortion curve of the optical imaging lens of Example 9 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 18d The chromatic aberration curve of the optical imaging lens of Example 9 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. Figures 18a to 18d As shown, the optical imaging lens provided in Example 9 can achieve good imaging quality.

[0336] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, improvements, equivalent substitutions, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An optical imaging lens, characterized in that: The optical imaging lens has seven lenses with optical power, and the seven lenses include, in order from the object side to the image side along the optical axis: The first lens has positive refractive power, and its object side surface is convex and its image side surface is concave; The second lens has a negative optical power, and its object side surface is convex and its image side surface is concave; The third lens has a negative optical power, and its object side surface is convex and its image side surface is concave; a fourth lens element having positive refractive power and a convex object-side surface; a fifth lens element having negative optical power, whose image side surface is concave; a sixth lens having positive refractive power, whose object-side surface is convex and whose image-side surface is concave; The seventh lens element has a negative optical power, and its object side surface is convex and its image side surface is concave; Wherein, half of the diagonal length of the effective pixel area on the imaging plane ImgH and the axial distance TTL from the object side of the first lens to the imaging plane satisfy: 5.01mm≤ImgH*ImgH / TTL≤5.12; the dispersion coefficient V1 of the first lens satisfies: 81.61≤V1≤86; The effective focal length f5 of the fifth lens and the effective focal length f7 of the seventh lens satisfy: 2.65≤f5 / f7≤4.

43.

2. The optical imaging lens according to claim 1, wherein: The axial distance TTL from the object side of the first lens to the imaging plane and half the diagonal length of the effective pixel area on the imaging plane ImgH satisfy the following: 1.24≤TTL / ImgH<1.

3.

3. The optical imaging lens according to claim 1, wherein: The effective focal length f of the optical imaging lens and the maximum field of view FOV of the optical imaging lens satisfy: 6.18mm≤f*tan(FOV / 2)≤6.2mm.

4. The optical imaging lens according to claim 1, wherein: The curvature radius R1 of the object side surface of the first lens, the curvature radius R2 of the image side surface of the first lens, and the effective focal length f1 of the first lens satisfy: 1.2≤(R1+R2) / f1≤1.

33.

5. The optical imaging lens according to claim 1, wherein: The effective focal length f4 of the fourth lens and the effective focal length f6 of the sixth lens satisfy: 1.63≤(f4+f6) / (f4-f6)≤1.

87.

6. The optical imaging lens according to claim 1, wherein: The curvature radius R6 of the image side surface of the third lens, the curvature radius R5 of the object side surface of the third lens and the effective focal length f3 of the third lens satisfy: 1.71≤f3 / (R6-R5)≤4.

04.

7. The optical imaging lens according to claim 1, wherein: The curvature radius R11 of the object side of the sixth lens, the curvature radius R12 of the image side of the sixth lens, the curvature radius R13 of the object side of the seventh lens and the curvature radius R14 of the image side of the seventh lens satisfy: 0.38≤(R11+R12) / (R13+R14)≤1.

15.

8. The optical imaging lens according to claim 1, wherein: A combined focal length f12 of the first lens and the second lens and a combined focal length f56 of the fifth lens and the sixth lens satisfy: 0.92≤f12 / f56≤1.

02.

9. The optical imaging lens according to claim 1, wherein: The on-axis distance SAG51 between the intersection of the fifth lens object side and the optical axis to the effective radius vertex of the fifth lens object side, the on-axis distance SAG52 between the intersection of the fifth lens image side and the optical axis to the effective radius vertex of the fifth lens image side, the on-axis distance SAG61 between the intersection of the sixth lens object side and the optical axis to the effective radius vertex of the sixth lens object side, and the on-axis distance SAG62 between the intersection of the sixth lens image side and the optical axis to the effective radius vertex of the sixth lens image side satisfy: 0.88≤(SAG51+SAG52) / (SAG61+SAG62)≤0.

99.

10. The optical imaging lens according to claim 1, wherein: The on-axis distance SAG71 between the intersection of the object side surface of the seventh lens and the optical axis to the vertex of the effective radius of the object side surface of the seventh lens, the on-axis distance SAG72 between the intersection of the image side surface of the seventh lens and the optical axis to the vertex of the effective radius of the image side surface of the ss seventh lens, and the air gap T67 on the optical axis between the sixth lens and the seventh lens satisfy: -2.56≤(SAG71+SAG72) / T67≤-2.

45.

11. The optical imaging lens according to claim 1, wherein: A center thickness CT3 of the third lens on the optical axis, an edge thickness ET3 of the third lens, a center thickness CT4 of the fourth lens on the optical axis, and an edge thickness ET4 of the fourth lens satisfy: 0.86≤(CT3+ET3) / (CT4+ET4)≤0.

91.

12. The optical imaging lens according to claim 1, wherein: An edge thickness ET5 of the fifth lens, an edge thickness ET6 of the sixth lens, and an edge thickness ET7 of the seventh lens satisfy the following: 1.76≤(ET5+ET6) / ET7≤1.96.

Images