Optical imaging lens

Abstract

The present application discloses an optical imaging lens, which includes, in order from the object side to the image side along the optical axis: a first lens with positive optical power, whose object side surface is convex; a second lens with negative optical power; a third lens with optical power; a fourth lens with optical power; a fifth lens with optical power, whose object side surface is concave; a sixth lens with positive optical power, whose image side surface is concave; and a seventh lens with optical power. The distance TTL from the object side surface of the first lens of the optical imaging lens to the imaging surface of the optical imaging lens on the optical axis and the half of the diagonal length of the effective pixel area on the imaging surface ImgH satisfy: TTL / ImgH<1.4; and the effective focal length f of the optical imaging lens and the half of the maximum field of view Semi-FOV of the optical imaging lens satisfy: f*tan(Semi-FOV)>5.5mm.

Description

Technical Field

[0001] The present application relates to an optical imaging lens, and in particular to an optical imaging lens comprising seven lenses. Background Art

[0002] With the rapid development of the smartphone industry, people are placing higher and higher demands on the imaging quality of imaging lenses mounted on mobile phones.

[0003] On the one hand, with the continuous update of commonly used photosensitive devices, such as charge coupled devices (CCD) or complementary metal-oxide semiconductor devices (CMOSSensor), the pixel size of photosensitive devices has gradually decreased, which has put forward higher requirements for the high imaging quality and miniaturization of the accompanying imaging lenses. In addition, the development trend of today's electronic products is to have good functions and a thin and short appearance. Therefore, miniaturized camera lenses with good imaging quality are still the main development direction of mobile phone lenses.

[0004] In addition, mobile phone imaging lenses are increasingly developing towards larger image surfaces. Large image surfaces mean higher resolution, and imaging lenses with large image surface characteristics can usually achieve higher resolution and better imaging quality. However, how to achieve a large image surface for imaging lenses while ensuring miniaturization also poses a higher difficulty challenge to the design of optical systems.

[0005] Based on the current development trend, the traditional five-element or six-element lens structure may not be sufficient to effectively meet various needs, and the seven-element optical imaging lens system may gradually become the mainstream. Summary of the invention

[0006] One aspect of the present application provides an optical imaging lens, which may include, in order from the object side to the image side along the optical axis: a first lens with positive optical power, whose object side surface is convex; a second lens with negative optical power; a third lens with optical power; a fourth lens with optical power; a fifth lens with optical power, whose object side surface is concave; a sixth lens with positive optical power, whose image side surface is concave; and a seventh lens with optical power.

[0007] In one embodiment, the distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis and half the diagonal length of the effective pixel area on the imaging surface ImgH may satisfy: TTL / ImgH<1.4.

[0008] In one embodiment, the effective focal length f of the optical imaging lens and half of the maximum field of view Semi-FOV of the optical imaging lens may satisfy: f*tan(Semi-FOV)>5.5 mm.

[0009] In one embodiment, the effective focal length f of the optical imaging lens and the entrance pupil diameter of the optical imaging lens may satisfy: f / EPD<1.9.

[0010] In one embodiment, the effective focal length f1 of the first lens, the effective focal length f5 of the fifth lens, the effective focal length f6 of the sixth lens, and the effective focal length f7 of the seventh lens of the optical imaging lens may satisfy: 0.8 <f1 / f6+f7 / f5<1.8。

[0011] In one embodiment, the combined focal length f123 of the first lens, the second lens, and the third lens and the combined focal length f567 of the fifth lens, the sixth lens, and the seventh lens may satisfy: -1.0 <f123 / f567<0。

[0012] In one embodiment, the effective focal length f2 of the second lens, the curvature radius R3 of the object-side surface of the second lens, and the curvature radius R4 of the image-side surface of the second lens may satisfy: -1.0<(R3-R4) / f2<0.

[0013] In one embodiment, the edge thickness ET1 of the first lens and the edge thickness ET5 of the fifth lens may satisfy: 0.5 <ET1 / ET5<1.0。

[0014] In one embodiment, the edge thickness ET6 of the sixth lens and the center thickness CT6 of the sixth lens may satisfy: 0.5 <ET6 / CT6<1.0。

[0015] In one embodiment, the on-axis distance SAG51 between the intersection of the object side surface of the fifth lens and the optical axis to the effective radius vertex of the object side surface of the fifth lens and the on-axis distance SAG52 between the intersection of the image side surface of the fifth lens and the optical axis to the effective radius vertex of the image side surface of the fifth lens may satisfy: 0.5 <SAG52 / SAG51<1.0。

[0016] In one embodiment, the on-axis distance SAG71 between the intersection of the object side surface of the seventh lens and the optical axis to the effective radius vertex of the object side surface of the seventh lens and the on-axis distance SAG72 between the intersection of the image side surface of the seventh lens and the optical axis to the effective radius vertex of the image side surface of the seventh lens may satisfy: 0.5 <SAG71 / SAG72<1.0。

[0017] In one embodiment, a curvature radius R1 of the object side surface of the first lens, a curvature radius R2 of the image side surface of the first lens, a curvature radius R11 of the object side surface of the sixth lens, and a curvature radius R12 of the image side surface of the sixth lens may satisfy: 0.2<(R11+R12) / (R2-R1)<0.7.

[0018] In one embodiment, the curvature radius R5 of the object side surface of the third lens and the curvature radius R6 of the image side surface of the third lens may satisfy: 0.5 <R5 / R6<2.0。

[0019] In one embodiment, a curvature radius R7 of the object-side surface of the fourth lens and a curvature radius R9 of the object-side surface of the fifth lens may satisfy: 0.2<(R7+R9) / (R7-R9)<0.7.

[0020] In one embodiment, 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 may satisfy: -1.2 <R14 / R13<-0.2。

[0021] In one embodiment, the center thickness CT1 of the first lens on the optical axis, the center thickness CT2 of the second lens on the optical axis, the center thickness CT3 of the third lens on the optical axis, and the center thickness CT4 of the fourth lens on the optical axis may satisfy: 0.7 <CT1 / (CT2+CT3+CT4)<1.2。

[0022] In one embodiment, the center thickness CT5 of the fifth lens on the optical axis, the center thickness CT7 of the seventh lens on the optical axis, the air interval T45 between the fourth lens and the fifth lens on the optical axis, the air interval T56 between the fifth lens and the sixth lens on the optical axis, and the air interval T67 between the sixth lens and the seventh lens on the optical axis may satisfy: 0.5<(T45+CT5+T56) / (T67+CT7)<1.0.

[0023] The optical imaging lens provided in the present application uses multiple lenses, such as the first lens to the seventh lens. By reasonably controlling the relationship between the image height and the total optical length of the optical imaging lens and reasonably allocating the optical focal length, it is possible to effectively balance the aberrations of the system at all levels, so that the system has better imaging capabilities; at the same time, the system has the characteristics of ultra-thinness, which is conducive to the miniaturization of the system; in addition, the optical system has the characteristics of high pixels, which can effectively improve the resolution of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Other features, purposes and advantages of the present application will become more apparent through the following detailed description of non-limiting embodiments in conjunction with the accompanying drawings. In the accompanying drawings:

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

[0026] FIG. 2A to FIG. 2D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 1 are respectively shown;

[0027] Figure 3 A schematic structural diagram of an optical imaging lens according to Embodiment 2 of the present application is shown;

[0028] FIG. 4A to FIG. 4D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 2 are respectively shown;

[0029] Figure 5 A schematic structural diagram of an optical imaging lens according to Embodiment 3 of the present application is shown;

[0030] FIG. 6A to FIG. 6D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 3 are respectively shown;

[0031] Figure 7 A schematic structural diagram of an optical imaging lens according to Embodiment 4 of the present application is shown;

[0032] FIG. 8A to FIG. 8D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 4 are respectively shown;

[0033] Fig. 9 A schematic structural diagram of an optical imaging lens according to Embodiment 5 of the present application is shown;

[0034] FIG. 10A to FIG. 10D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 5 are respectively shown;

[0035] Fig.11 A schematic structural diagram of an optical imaging lens according to Embodiment 6 of the present application is shown;

[0036] FIG. 12A to FIG. 12D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 6 are respectively shown. DETAILED DESCRIPTION

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

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

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

[0040] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object is called the object side of the lens, and the surface of each lens closest to the imaging plane is called the image side of the lens.

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

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

[0043] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

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

[0045] The optical imaging lens according to the exemplary embodiment of the present application may include seven lenses with optical power, namely, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens. The seven lenses are arranged in sequence from the object side to the image side along the optical axis. In the first lens to the seventh lens, each adjacent two lenses may have an air gap between them.

[0046] In an exemplary embodiment, the first lens may have positive power, and its object side surface may be convex; the second lens may have negative power; the third lens may have positive power or negative power; the fourth lens may have positive power or negative power; the fifth lens may have positive power or negative power, and its object side surface may be concave; the sixth lens may have positive power, and its image side surface may be concave; and the seventh lens may have positive power or negative power. By reasonably allocating the power of the lenses, the aberrations of the system at all levels can be effectively balanced, so that the system has better imaging capabilities.

[0047] In example embodiments, the image-side surface of the first lens may be a concave surface.

[0048] In example embodiments, the object-side surface of the second lens may be a convex surface, and the image-side surface may be a concave surface.

[0049] In example embodiments, the object-side surface of the fourth lens may be a convex surface.

[0050] In example embodiments, the object-side surface of the sixth lens may be a convex surface.

[0051] In example embodiments, the object-side surface of the seventh lens may be a concave surface, and the image-side surface may be a concave surface.

[0052] In an exemplary embodiment, the distance TTL from the object side surface of the first lens of the optical imaging lens to the imaging surface on the optical axis and the half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens ImgH may satisfy: TTL / ImgH<1.4. For example, TTL / ImgH≤1.35. Reasonable control of the distance from the object side surface of the first lens of the optical imaging lens to the imaging surface on the optical axis and the half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens and the relationship between them can make the optical imaging system have the characteristics of ultra-thinness, which is conducive to the miniaturization of the system.

[0053] In an exemplary embodiment, the effective focal length f of the optical imaging lens and half of the maximum field of view angle Semi-FOV of the optical imaging lens may satisfy: f * tan(Semi-FOV) > 5.5 mm. For example, 5.5 mm < f * tan(Semi-FOV) < 6.0 mm. By reasonably controlling the relationship between the effective focal length of the optical imaging lens and half of the maximum field of view angle of the optical imaging lens, such that the product of the effective focal length of the optical imaging lens and the tangent value of half of the maximum field of view angle of the optical imaging lens is within a reasonable numerical range, the optical system can have the characteristic of high pixels, thereby effectively improving the system resolution.

[0054] In an exemplary embodiment, the effective focal length f of the optical imaging lens and the entrance pupil diameter of the optical imaging lens may satisfy: f / EPD < 1.9. For example, 1.84 < f / EPD < 1.87. By controlling the relationship between the effective focal length of the optical imaging lens and the entrance pupil diameter of the optical imaging lens, the light passing aperture of the system can be increased, thereby ensuring sufficient light passing amount in a dark environment.

[0055] In an exemplary embodiment, the effective focal length f1 of the first lens, the effective focal length f5 of the fifth lens, the effective focal length f6 of the sixth lens, and the effective focal length f7 of the seventh lens of the optical imaging lens may satisfy: 0.8 < f1 / f6 + f7 / f5 < 1.8. For example, 1.0 < f1 / f6 + f7 / f5 < 1.3. By controlling the magnitudes of the effective focal lengths of the first lens, the fifth lens, the sixth lens, and the seventh lens of the optical imaging lens and the relationships between them, the optical power of the lenses can be reasonably distributed, effectively controlling the system aberration, thereby ensuring that the system has good image quality and improving the system resolution.

[0056] In an exemplary embodiment, the combined focal length f123 of the first lens, the second lens, and the third lens and the combined focal length f567 of the fifth lens, the sixth lens, and the seventh lens may satisfy: -1.0 < f123 / f567 < 0. For example, -0.6 < f123 / f567 < -0.2. By controlling the relationship between the combined focal length of the first lens, the second lens, and the third lens and the combined focal length of the fifth lens, the sixth lens, and the seventh lens, the optical power of the front and rear lens groups can be reasonably distributed, enabling the positive and negative spherical aberrations generated by the front and rear components to cancel each other out, ensuring that the system has small spherical aberration, thereby improving the imaging ability of the system.

[0057] In an exemplary embodiment, the effective focal length f2 of the second lens, the radius of curvature R3 of the object side surface of the second lens, and the radius of curvature R4 of the image side surface of the second lens may satisfy: -1.0 < (R3 - R4) / f2 < 0. For example, -0.5 < (R3 - R4) / f2 < -0.3. By controlling the relationship between the effective focal length of the second lens, the radius of curvature of the object side surface of the second lens, and the radius of curvature of the image side surface of the second lens, the shape of the second lens can be effectively controlled, ensuring its processability, which is beneficial to molding and assembly, and improving the imaging ability of the system.

[0058] In an exemplary embodiment, the edge thickness ET1 of the first lens and the edge thickness ET5 of the fifth lens may satisfy: 0.5 < ET1 / ET5 < 1.0. For example, 0.6 < ET1 / ET5 < 0.9. By controlling the relationship between the edge thickness of the first lens and the edge thickness of the fifth lens, the processability of the first lens and the fifth lens can be ensured, which is beneficial to molding and assembly, and improving the imaging ability of the system.

[0059] In an exemplary embodiment, the edge thickness ET6 of the sixth lens and the central thickness CT6 of the sixth lens may satisfy: 0.5 < ET6 / CT6 < 1.0. For example, 0.6 < ET6 / CT6 < 0.8. By controlling the relationship between the edge thickness of the sixth lens and the central thickness of the sixth lens, the shape of the sixth lens can be effectively controlled, improving the lens processability, and the light path of the marginal field of view can be effectively controlled, enabling the system to better match with the chip.

[0060] In an 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 and 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 may satisfy: 0.5 < SAG52 / SAG51 < 1.0. For example, 0.7 < SAG52 / SAG51 < 1.0. By controlling the relationship between the axial distance 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 and the axial 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, the shape of the fifth lens can be effectively controlled, improving the processability of the fifth lens, which is beneficial to the molding and assembly of the lens, and improving the resolution of the optical system.

[0061] In an exemplary embodiment, the axial distance SAG71 between the intersection point 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 point 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 may satisfy: 0.5 < SAG71 / SAG72 < 1.0. For example, 0.8 < SAG71 / SAG72 < 1.0. By controlling the relationship between the axial distance between the intersection point 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 between the intersection point 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, the shape of the seventh lens can be effectively controlled, ghost images can be reduced, and it is beneficial to the molding, processing, and demolding of the lens.

[0062] In an 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, the radius of curvature R11 of the object side surface of the sixth lens, and the radius of curvature R12 of the image side surface of the sixth lens may satisfy: 0.2 < (R11 + R12) / (R2 - R1) < 0.7. For example, 0.3 < (R11 + R12) / (R2 - R1) < 0.5. By controlling the relationship between the radius of curvature of the object side surface of the first lens, the radius of curvature of the image side surface of the first lens, the radius of curvature of the object side surface of the sixth lens, and the radius of curvature of the image side surface of the sixth lens, the shapes of the first lens and the sixth lens can be effectively controlled, and then the deflection angles of the system light beam at the first lens and the sixth lens can be controlled, achieving good processability of the system and better matching of the system with the chip.

[0063] In an exemplary embodiment, the radius of curvature R5 of the object side surface of the third lens and the radius of curvature R6 of the image side surface of the third lens may satisfy: 0.5 < R5 / R6 < 2.0. For example, 0.8 < R5 / R6 < 2.0. By controlling the relationship between the radius of curvature of the object side surface of the third lens and the radius of curvature of the image side surface of the third lens, the shape of the third lens can be effectively controlled, and then the deflection angle of the system light beam at the third lens can be controlled, effectively reducing the sensitivity of the system.

[0064] In an exemplary embodiment, the radius of curvature R7 of the object side surface of the fourth lens and the radius of curvature R9 of the object side surface of the fifth lens may satisfy: 0.2 < (R7 + R9) / (R7 - R9) < 0.7. For example, 0.3 < (R7 + R9) / (R7 - R9) < 0.6. By controlling the relationship between the radius of curvature of the object side surface of the fourth lens and the radius of curvature of the object side surface of the fifth lens, the contribution of the fourth lens and the fifth lens to spherical aberration can be better controlled, and then the system has smaller spherical aberration and better imaging ability.

[0065] In an exemplary embodiment, the radius of curvature R13 of the object side surface of the seventh lens and the radius of curvature R14 of the image side surface of the seventh lens may satisfy: -1.2 < R14 / R13 < -0.2. For example, -1 < R14 / R13 < -0.4. By controlling the relationship between the radius of curvature of the object side surface of the seventh lens and the radius of curvature of the image side surface of the seventh lens, the contribution of the seventh lens to aberrations such as spherical aberration and coma can be better reduced, making it easier to balance the aberrations of the system, thereby improving the imaging quality of the system.

[0066] In an exemplary embodiment, the central thickness CT1 of the first lens on the optical axis, the central thickness CT2 of the second lens on the optical axis, the central thickness CT3 of the third lens on the optical axis, and the central thickness CT4 of the fourth lens on the optical axis may satisfy: 0.7 < CT1 / (CT2 + CT3 + CT4) < 1.2. For example, 0.8 < CT1 / (CT2 + CT3 + CT4) < 1.0. By controlling the relationship between the central thickness of the first lens on the optical axis, the central thickness of the second lens on the optical axis, the central thickness of the third lens on the optical axis, and the central thickness of the fourth lens on the optical axis, the central thicknesses of the first four lenses can be reasonably distributed, effectively balancing the contribution of each lens to field curvature, so that each field of view has better image quality.

[0067] In an exemplary embodiment, the central thickness CT5 of the fifth lens on the optical axis, the central thickness CT7 of the seventh lens on the optical axis, the air gap T45 between the fourth lens and the fifth lens on the optical axis, the air gap T56 between the fifth lens and the sixth lens on the optical axis, and the air gap T67 between the sixth lens and the seventh lens on the optical axis may satisfy: 0.5 < (T45 + CT5 + T56) / (T67 + CT7) < 1.0. For example, 0.6 < (T45 + CT5 + T56) / (T67 + CT7) < 0.8. By controlling the relationship between the central thickness of the fifth lens on the optical axis, the central thickness of the seventh lens on the optical axis, the air gap between the fourth lens and the fifth lens on the optical axis, the air gap between the fifth lens and the sixth lens on the optical axis, and the air gap between the sixth lens and the seventh lens on the optical axis, the central thicknesses of these lenses and the intervals between the lenses can be reasonably distributed, so that the system is compact, and at the same time, the field curvature can be effectively controlled to ensure that the field curvature of the system is within a small range, thereby ensuring the imaging quality of the system.

[0068] In an exemplary embodiment, the above optical imaging lens may further include a diaphragm. The diaphragm can be set at an appropriate position according to needs. For example, the diaphragm can be set between the object side and the first lens. Optionally, the above optical imaging lens may further include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging surface.

[0069] The present application proposes an optical imaging lens with the characteristics of a large image surface, a large aperture, and ultra-thinness. The optical imaging lens according to the above-mentioned embodiment of the present application can use multiple lenses, such as the seven lenses mentioned above. By reasonably allocating the focal length, surface shape, center thickness of each lens, and axial spacing between each lens, etc., the incident light can be effectively converged, the total optical length of the imaging lens can be reduced, and the processability of the imaging lens can be improved, making the optical imaging lens more conducive to production and processing.

[0070] 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 of the first lens to the image side 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 having 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 occurring during imaging can be eliminated as much as possible, thereby improving the imaging quality. Optionally, at least one of the object side and image side 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 and image side 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.

[0071] The present application also provides an imaging device, whose electronic photosensitive element can be a charge coupled device (CCD) or a complementary metal oxide semiconductor device (CMOS). The imaging device can be an independent imaging device such as a digital camera, or an imaging module integrated in a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens described above.

[0072] However, those skilled in the art should understand that, without departing from the technical solution claimed in the present application, the number of lenses constituting the optical imaging lens can be changed to obtain the various results and advantages described in this specification. For example, although seven lenses are described as an example in the embodiments, the optical imaging lens is not limited to including seven lenses. If necessary, the optical imaging lens may also include other numbers of lenses.

[0073] Specific embodiments of the optical imaging lens applicable to the above-mentioned embodiments are further described below with reference to the accompanying drawings.

[0074] Example 1

[0075] The following reference Figures 1 to 2D An optical imaging lens according to Embodiment 1 of the present application is described. Figure 1is a schematic diagram showing the structure of an optical imaging lens according to Example 1 of the present application.

[0076] like Figure 1 As shown, the optical imaging lens includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8 and an imaging surface S17.

[0077] The first lens E1 has positive power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has negative power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has positive power, and its object side surface S5 is convex, and its image side surface S6 is concave. The fourth lens E4 has positive power, and its object side surface S7 is convex, and its image side surface S8 is concave. The fifth lens E5 has negative power, and its object side surface S9 is concave, and its image side surface S10 is convex. The sixth lens E6 has positive power, and its object side surface S11 is convex, and its image side surface S12 is concave. The seventh lens E7 has negative power, and its object side surface S13 is concave, and its image side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. The light from the object passes through each surface S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0078] In this embodiment, the total effective focal length of the optical imaging lens is f=6.69 mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S17 is 7.78 mm, half of the diagonal length of the effective pixel area on the imaging surface S17 is ImgH=5.75 mm, and the maximum half field of view Semi-FOV of the optical imaging lens is 40.2°.

[0079] Table 1 shows the basic parameters of the optical imaging lens of Example 1, wherein the units of the radius of curvature, thickness and focal length are all millimeters (mm).

[0080]

[0081] Table 1

[0082] In Example 1, the object side surface and the image side surface of any lens among the first lens E1 to the seventh lens E7 are both aspherical surfaces, and the surface shape x of each aspherical lens can be defined by but not limited to the following aspherical surface formula:

[0083]

[0084] Wherein, x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at a height of h along the optical axis; c is the paraxial curvature of the aspheric surface, c=1 / R (i.e., the paraxial curvature c is the reciprocal of the curvature radius R in Table 1 above); k is the cone coefficient; Ai is the correction coefficient of the i-th order of the aspheric surface. Table 2 below gives the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A56, A57, A58, A59, A60, A61, A71, A72, A73, A74, A75, A76, A77, A8 10 , A 12 , A 14 , A 16 Table 3 shows the high-order coefficients A of the aspherical mirror surfaces S1-S14 that can be used in Example 1. 18 , A 20 , A 22 , A 24 , A 26 , A 28 and A 30 .

[0085] Face number A4 A6 A8 A10 A12 A14 A16 S1 1.4047E-03 -1.7430E-03 4.7765E-03 -6.1696E-03 4.6470E-03 -2.1244E-03 5.7815E-04 S2 -2.2599E-02 2.3801E-02 -2.0226E-02 1.5597E-02 -1.0151E-02 4.7123E-03 -1.3933E-03 S3 -1.8984E-02 2.3432E-02 -1.0645E-02 1.2965E-03 1.3535E-03 -7.6441E-04 1.7282E-04 S4 -2.0211E-02 2.5338E-02 -2.0103E-02 1.8776E-02 -1.6168E-02 1.0142E-02 -3.9981E-03 S5 -1.6217E-02 -3.6499E-03 9.2828E-03 -1.2209E-02 5.4341E-03 7.3372E-04 -1.7949E-03 S6 -2.1385E-02 -2.7577E-02 1.6732E-01 -5.5691E-01 1.2166E+00 -1.8305E+00 1.9495E+00 S7 -2.3512E-02 -4.0304E-02 1.0653E-01 -1.7245E-01 1.8689E-01 -1.3751E-01 6.9380E-02 S8 -8.4673E-03 -2.4995E-02 3.2001E-02 -3.7070E-02 3.6146E-02 -2.7824E-02 1.6223E-02 S9 9.1585E-02 -8.6814E-02 6.7758E-02 -4.4683E-02 2.5130E-02 -1.2543E-02 5.3082E-03 S10 -7.9587E-03 -1.1402E-02 4.6688E-03 1.0469E-02 -1.3975E-02 8.5182E-03 -3.2494E-03 S11 -8.0287E-02 1.5791E-02 -5.7573E-03 3.6906E-03 -1.8026E-03 5.2628E-04 -9.4367E-05 S12 8.1459E-03 -3.5752E-02 2.0109E-02 -6.8124E-03 1.5401E-03 -2.4054E-04 2.6247E-05 S13 -2.8425E-02 9.0064E-04 9.9079E-04 1.5355E-04 -1.3436E-04 2.9167E-05 -3.4357E-06 S14 -3.1220E-02 -2.2147E-04 2.2259E-03 -7.7270E-04 1.5404E-04 -2.0290E-05 1.8266E-06

[0086] Table 2

[0087] Face number A18 A20 A22 A24 A26 A28 A30 S1 -8.6643E-05 5.4726E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 2.3256E-04 -1.6623E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 -1.3867E-05 -2.1545E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 8.8916E-04 -8.4415E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 7.0904E-04 -9.5616E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 -1.4926E+00 8.2474E-01 -3.2601E-01 8.9886E-02 -1.6413E-02 1.7831E-03 -8.7206E-05 S7 -2.3919E-02 5.5320E-03 -8.2134E-04 7.0847E-05 -2.7035E-06 0.0000E+00 0.0000E+00 S8 -6.9646E-03 2.1604E-03 -4.7496E-04 7.1870E-05 -7.1056E-06 4.1308E-07 -1.0714E-08 S9 -1.7582E-03 4.2872E-04 -7.3601E-05 8.4860E-06 -6.1184E-07 2.4091E-08 -3.6884E-10 S10 8.4756E-04 -1.5557E-04 2.0102E-05 -1.7893E-06 1.0438E-07 -3.5897E-09 5.5146E-11 S11 1.0781E-05 -7.9148E-07 3.6272E-08 -9.4686E-10 1.0771E-11 0.0000E+00 0.0000E+00 S12 -1.9879E-06 1.0191E-07 -3.3483E-09 6.2476E-11 -4.5765E-13 -1.3305E-15 0.0000E+00 S13 2.5075E-07 -1.1652E-08 3.3417E-10 -5.3017E-12 3.3617E-14 -2.3866E-17 2.0421E-18 S14 -1.1284E-07 4.6913E-09 -1.2459E-10 1.8867E-12 -1.2563E-14 3.8545E-17 -9.1299E-19

[0088] Table 3

[0089] Figure 2A The axial chromatic aberration curve of the optical imaging lens of Example 1 is shown, which indicates the deviation of light of different wavelengths from the focal point behind the lens. Figure 2B The astigmatism curve of the optical imaging lens of Example 1 is shown, which represents the meridional image curvature and the sagittal image 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 magnification 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. FIG. 2A to FIG. 2D It can be seen that the optical imaging lens provided in Example 1 can achieve good imaging quality.

[0090] Example 2

[0091] The following reference Figures 3 to 4D An optical imaging lens according to Embodiment 2 of the present application is described. Figure 3 A schematic structural diagram of an optical imaging lens according to Embodiment 2 of the present application is shown.

[0092] like Figure 3As shown, the optical imaging lens includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8 and an imaging surface S17.

[0093] The first lens E1 has positive power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has negative power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has positive power, and its object side surface S5 is convex, and its image side surface S6 is concave. The fourth lens E4 has positive power, and its object side surface S7 is convex, and its image side surface S8 is concave. The fifth lens E5 has negative power, and its object side surface S9 is concave, and its image side surface S10 is convex. The sixth lens E6 has positive power, and its object side surface S11 is convex, and its image side surface S12 is concave. The seventh lens E7 has negative power, and its object side surface S13 is concave, and its image side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. The light from the object passes through each surface S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0094] In this embodiment, the total effective focal length of the optical imaging lens is f=6.69 mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S17 is 7.76 mm, half of the diagonal length of the effective pixel area on the imaging surface S17 is ImgH=5.75 mm, and the maximum half field of view Semi-FOV of the optical imaging lens is 40.2°.

[0095] Table 4 shows the basic parameters of the optical imaging lens of Example 2, wherein the units of the radius of curvature, thickness and focal length are all millimeters (mm).

[0096]

[0097] Table 4

[0098] In Example 2, 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 5 below lists 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, A 10 , A 12 , A 14 , A 16 Table 6 gives the high-order coefficients A of the aspherical mirror surfaces S1-S14 that can be used in Example 2. 18 , A 20 , A 22 , A 24 , A 26 , A 28 and A 30 .

[0099]

[0100]

[0101] Table 5

[0102] Face number A18 A20 A22 A24 A26 A28 A30 S1 -6.8115E-05 4.5371E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 1.0513E-04 -5.9836E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 -2.8005E-04 2.3301E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 1.5320E-03 -1.5395E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 2.5195E-03 -2.7129E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 -3.3842E+00 1.9860E+00 -8.2933E-01 2.4037E-01 -4.5934E-02 5.2020E-03 -2.6432E-04 S7 -1.0382E-02 2.3222E-03 -3.3838E-04 2.9249E-05 -1.1450E-06 0.0000E+00 0.0000E+00 S8 -1.7298E-02 6.2664E-03 -1.6128E-03 2.8723E-04 -3.3619E-05 2.3248E-06 -7.1920E-08 S9 3.0076E-03 -1.0133E-03 2.2852E-04 -3.4712E-05 3.4150E-06 -1.9655E-07 5.0206E-09 S10 -2.6524E-05 -7.5471E-06 2.2741E-06 -2.9626E-07 2.1701E-08 -8.6835E-10 1.4841E-11 S11 1.1486E-05 -7.8427E-07 3.4010E-08 -8.4903E-10 9.3000E-12 0.0000E+00 0.0000E+00 S12 -1.8885E-06 1.0802E-07 -4.0102E-09 8.6987E-11 -8.3683E-13 0.0000E+00 0.0000E+00 S13 2.6043E-07 -1.3431E-08 4.3309E-10 -7.9837E-12 6.4394E-14 0.0000E+00 0.0000E+00 S14 5.9345E-08 -2.9194E-09 9.1354E-11 -1.6465E-12 1.3019E-14 0.0000E+00 0.0000E+00

[0103] Table 6

[0104] Figure 4A The axial chromatic aberration curve of the optical imaging lens of Example 2 is shown, which indicates that light of different wavelengths deviates from the focal point behind the lens. Figure 4B The astigmatism curve of the optical imaging lens of Example 2 is shown, which represents the meridional image curvature and the sagittal image 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 magnification 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. FIG. 4A to FIG. 4D It can be seen that the optical imaging lens provided in Example 2 can achieve good imaging quality.

[0105] Example 3

[0106] The following reference Figures 5 to 6D An optical imaging lens according to Embodiment 3 of the present application is described. Figure 5 A schematic structural diagram of an optical imaging lens according to Embodiment 3 of the present application is shown.

[0107] like Figure 5 As shown, the optical imaging lens includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8 and an imaging surface S17.

[0108] The first lens E1 has positive power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has negative power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has negative power, and its object side surface S5 is convex, and its image side surface S6 is concave. The fourth lens E4 has positive power, and its object side surface S7 is convex, and its image side surface S8 is concave. The fifth lens E5 has negative power, and its object side surface S9 is concave, and its image side surface S10 is convex. The sixth lens E6 has positive power, and its object side surface S11 is convex, and its image side surface S12 is concave. The seventh lens E7 has negative power, and its object side surface S13 is concave, and its image side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. The light from the object passes through each surface S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0109] In this embodiment, the total effective focal length of the optical imaging lens is f=6.69 mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S17 is 7.76 mm, half of the diagonal length of the effective pixel area on the imaging surface S17 is ImgH=5.75 mm, and the maximum half field of view Semi-FOV of the optical imaging lens is 40.2°.

[0110] Table 7 shows the basic parameters of the optical imaging lens of Example 3, wherein the units of the radius of curvature, thickness and focal length are all millimeters (mm).

[0111]

[0112] Table 7

[0113] In Example 3, 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 8 below lists 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, A 10 , A 12 , A 14 , A 16 Table 9 gives the high-order coefficients A of the aspherical mirror surfaces S1-S14 that can be used in Example 3. 18 , A 20 , A 22 , A 24 , A 26 , A 28 and A 30 .

[0114] Face number A4 A6 A8 A10 A12 A14 A16 S1 1.2709E-03 -6.8348E-04 2.6235E-03 -3.7920E-03 3.1063E-03 -1.5226E-03 4.4005E-04 S2 -3.1343E-02 3.8481E-02 -3.2781E-02 2.1233E-02 -1.0551E-02 3.7405E-03 -8.6570E-04 S3 -2.2086E-02 3.3096E-02 -1.9576E-02 3.4861E-03 4.1976E-03 -3.8480E-03 1.5327E-03 S4 -1.6012E-02 2.2387E-02 -1.9308E-02 2.0141E-02 -1.9291E-02 1.3235E-02 -5.6382E-03 S5 -1.6111E-02 8.5954E-04 -5.0533E-03 1.1767E-02 -1.9178E-02 1.6843E-02 -8.2993E-03 S6 -1.9682E-02 -3.1638E-02 2.2669E-01 -8.4767E-01 2.0153E+00 -3.2483E+00 3.6710E+00 S7 -2.2145E-02 -2.1675E-02 5.5643E-02 -8.6702E-02 9.0476E-02 -6.4490E-02 3.1670E-02 S8 -9.3861E-03 -2.1671E-02 3.0817E-02 -4.3419E-02 5.2181E-02 -4.8637E-02 3.3565E-02 S9 7.7950E-02 -8.3005E-02 6.7948E-02 -3.9404E-02 1.0557E-02 4.0391E-03 -5.8183E-03 S10 -3.0806E-02 2.2836E-04 1.5864E-02 -1.5178E-02 7.6269E-03 -2.3528E-03 4.1259E-04 S11 -9.9389E-02 4.3159E-02 -2.3610E-02 1.0316E-02 -3.3230E-03 7.4909E-04 -1.1501E-04 S12 3.9841E-03 -2.5281E-02 1.3576E-02 -4.6472E-03 1.1017E-03 -1.8487E-04 2.2027E-05 S13 -3.7180E-02 3.4696E-03 7.8576E-04 -1.1476E-05 -7.7552E-05 2.0914E-05 -2.8030E-06 S14 -4.2368E-02 6.7412E-03 -1.0985E-03 2.4115E-04 -5.0894E-05 7.9046E-06 -8.4605E-07

[0115] Table 8

[0116] Face number A18 A20 A22 A24 A26 A28 A30 S1 -6.9790E-05 4.6467E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 1.1529E-04 -6.6292E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 -3.0904E-04 2.5613E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 1.3404E-03 -1.3482E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 2.1920E-03 -2.4180E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 -2.9609E+00 1.7128E+00 -7.0482E-01 2.0129E-01 -3.7901E-02 4.2293E-03 -2.1174E-04 S7 -1.0695E-02 2.4534E-03 -3.6806E-04 3.2788E-05 -1.3198E-06 0.0000E+00 0.0000E+00 S8 -1.6840E-02 6.0839E-03 -1.5613E-03 2.7723E-04 -3.2353E-05 2.2307E-06 -6.8805E-08 S9 3.1537E-03 -1.0595E-03 2.3901E-04 -3.6364E-05 3.5859E-06 -2.0697E-07 5.3033E-09 S10 -1.5590E-05 -1.0902E-05 2.9049E-06 -3.7093E-07 2.7150E-08 -1.0930E-09 1.8853E-11 S11 1.1895E-05 -8.1481E-07 3.5456E-08 -8.8833E-10 9.7673E-12 0.0000E+00 0.0000E+00 S12 -1.8419E-06 1.0521E-07 -3.8999E-09 8.4485E-11 -8.1205E-13 0.0000E+00 0.0000E+00 S13 2.2792E-07 -1.1762E-08 3.7828E-10 -6.9421E-12 5.5677E-14 0.0000E+00 0.0000E+00 S14 6.1367E-08 -2.9586E-09 9.0807E-11 -1.6068E-12 1.2486E-14 0.0000E+00 0.0000E+00

[0117] Table 9

[0118] Fig. 6A The axial chromatic aberration curve of the optical imaging lens of Example 3 is shown, which indicates the deviation of light of different wavelengths from the focal point behind the lens. Figure 6B The astigmatism curve of the optical imaging lens of Example 3 is shown, which represents the meridional image curvature and the sagittal image 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. Fig.6D The magnification 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. FIG. 6A to FIG. 6D It can be seen that the optical imaging lens provided in Example 3 can achieve good imaging quality.

[0119] Example 4

[0120] The following reference Figures 7 to 8D An optical imaging lens according to Embodiment 4 of the present application is described. Figure 7 A schematic structural diagram of an optical imaging lens according to Embodiment 4 of the present application is shown.

[0121] like Figure 7 As shown, the optical imaging lens includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8 and an imaging surface S17.

[0122] The first lens E1 has positive power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has negative power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has negative power, and its object side surface S5 is concave, and its image side surface S6 is convex. The fourth lens E4 has positive power, and its object side surface S7 is convex, and its image side surface S8 is concave. The fifth lens E5 has negative power, and its object side surface S9 is concave, and its image side surface S10 is convex. The sixth lens E6 has positive power, and its object side surface S11 is convex, and its image side surface S12 is concave. The seventh lens E7 has negative power, and its object side surface S13 is concave, and its image side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. The light from the object passes through each surface S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0123] In this embodiment, the total effective focal length of the optical imaging lens is f=6.69 mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S17 is 7.74 mm, half of the diagonal length of the effective pixel area on the imaging surface S17 is ImgH=5.75 mm, and the maximum half field of view Semi-FOV of the optical imaging lens is 40.2°.

[0124] Table 10 shows a basic parameter table of the optical imaging lens of Example 4, wherein the units of the radius of curvature, thickness and focal length are all millimeters (mm).

[0125]

[0126]

[0127] Table 10

[0128] In Example 4, the object side surface and the image side surface of any lens from the first lens E1 to the seventh lens E7 are both aspherical surfaces. Table 11 below lists the high-order coefficients A4, A6, A8, A9, A10, A111, 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, A5 10 , A 12 , A 14 , A 16 Table 12 gives the high-order coefficients A of the aspherical mirror surfaces S1-S14 that can be used in Example 4. 18 , A 20 , A 22 , A 24 , A 26 , A 28 and A 30 .

[0129] Face number A4 A6 A8 A10 A12 A14 A16 S1 1.0699E-03 -1.9446E-04 1.8860E-03 -3.0503E-03 2.6099E-03 -1.3056E-03 3.8126E-04 S2 -3.2605E-02 4.0827E-02 -3.5473E-02 2.3435E-02 -1.1877E-02 4.2945E-03 -1.0137E-03 S3 -2.3400E-02 3.4639E-02 -1.9054E-02 2.5566E-04 8.0015E-03 -6.1808E-03 2.3519E-03 S4 -1.7376E-02 2.7669E-02 -3.3834E-02 4.7921E-02 -5.2848E-02 3.8190E-02 -1.6701E-02 S5 -1.5650E-02 3.8352E-03 -2.3733E-02 5.2018E-02 -6.7698E-02 5.1961E-02 -2.3457E-02 S6 -1.6869E-02 -3.9019E-02 2.6152E-01 -9.9986E-01 2.4497E+00 -4.0731E+00 4.7501E+00 S7 -2.0148E-02 -2.4708E-02 6.3628E-02 -1.0431E-01 1.1500E-01 -8.6316E-02 4.4454E-02 S8 -9.0564E-03 -1.9874E-02 2.7686E-02 -4.0751E-02 5.0807E-02 -4.8171E-02 3.3438E-02 S9 7.6017E-02 -7.4151E-02 5.0466E-02 -1.8601E-02 -5.7866E-03 1.2908E-02 -9.2328E-03 S10 -2.9879E-02 9.3966E-04 1.3084E-02 -1.1688E-02 5.2175E-03 -1.3174E-03 1.2579E-04 S11 -9.8552E-02 4.0954E-02 -2.1907E-02 9.5705E-03 -3.1115E-03 7.0800E-04 -1.0940E-04 S12 3.4768E-03 -2.5502E-02 1.3658E-02 -4.6187E-03 1.0766E-03 -1.7736E-04 2.0755E-05 S13 -3.7415E-02 3.7231E-03 6.3140E-04 4.8217E-05 -9.2551E-05 2.3429E-05 -3.0890E-06 S14 -4.4116E-02 7.9272E-03 -1.5107E-03 3.2881E-04 -6.3033E-05 9.0503E-06 -9.2340E-07

[0130] Table 11

[0131]

[0132]

[0133] Table 12

[0134] Fig. 8A The axial chromatic aberration curve of the optical imaging lens of Example 4 is shown, which indicates the deviation of light of different wavelengths from the focal point behind the lens. Figure 8B The astigmatism curve of the optical imaging lens of Example 4 is shown, which represents the meridional image curvature and the sagittal image 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. Fig.8DThe magnification 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. FIG. 8A to FIG. 8D It can be seen that the optical imaging lens provided in Example 4 can achieve good imaging quality.

[0135] Example 5

[0136] The following reference Figures 9 to 10D An optical imaging lens according to Embodiment 5 of the present application is described. Fig. 9 A schematic structural diagram of an optical imaging lens according to Embodiment 5 of the present application is shown.

[0137] like Fig. 9 As shown, the optical imaging lens includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8 and an imaging surface S17.

[0138] The first lens E1 has positive power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has negative power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has positive power, and its object side surface S5 is convex, and its image side surface S6 is concave. The fourth lens E4 has positive power, and its object side surface S7 is convex, and its image side surface S8 is convex. The fifth lens E5 has negative power, and its object side surface S9 is concave, and its image side surface S10 is concave. The sixth lens E6 has positive power, and its object side surface S11 is convex, and its image side surface S12 is concave. The seventh lens E7 has negative power, and its object side surface S13 is concave, and its image side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. The light from the object passes through each surface S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0139] In this embodiment, the total effective focal length of the optical imaging lens is f=6.69 mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S17 is 7.75 mm, half of the diagonal length of the effective pixel area on the imaging surface S17 is ImgH=5.75 mm, and the maximum half field of view Semi-FOV of the optical imaging lens is 40.2°.

[0140] Table 13 shows a basic parameter table of the optical imaging lens of Example 5, wherein the units of the radius of curvature, thickness and focal length are all millimeters (mm).

[0141]

[0142]

[0143] Table 13

[0144] 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 14 below lists 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 Table 15 gives the high-order coefficients A of the aspherical mirror surfaces S1-S14 that can be used in Example 5. 18 , A 20 , A 22 , A 24 , A 26 , A 28 and A 30 .

[0145] Face number A4 A6 A8 A10 A12 A14 A16 S1 1.3478E-03 -1.1982E-03 3.6638E-03 -4.9328E-03 3.8599E-03 -1.8332E-03 5.1806E-04 S2 -3.1288E-02 3.8379E-02 -3.2666E-02 2.1140E-02 -1.0495E-02 3.7175E-03 -8.5961E-04 S3 -2.3465E-02 3.5563E-02 -2.3206E-02 7.7705E-03 7.0595E-04 -2.0186E-03 9.5128E-04 S4 -1.7807E-02 2.3745E-02 -1.9381E-02 2.0844E-02 -2.2264E-02 1.6875E-02 -7.7554E-03 S5 -1.6493E-02 2.8372E-03 -1.6663E-02 3.5806E-02 -4.7022E-02 3.6195E-02 -1.6302E-02 S6 -1.7804E-02 -3.4475E-02 2.4572E-01 -9.5337E-01 2.3344E+00 -3.8611E+00 4.4729E+00 S7 -1.9172E-02 -2.5927E-02 6.1534E-02 -9.6415E-02 1.0151E-01 -7.2501E-02 3.5343E-02 S8 -8.4645E-03 -2.1803E-02 2.9263E-02 -4.2928E-02 5.4287E-02 -5.2351E-02 3.6905E-02 S9 7.7761E-02 -6.9292E-02 3.6606E-02 9.0766E-06 -2.1094E-02 2.1125E-02 -1.2144E-02 S10 -3.2974E-02 6.9896E-03 6.1537E-03 -5.9112E-03 1.9094E-03 -4.3934E-05 -2.0128E-04 S11 -1.0345E-01 4.5777E-02 -2.5262E-02 1.1181E-02 -3.6406E-03 8.2563E-04 -1.2706E-04 S12 3.7421E-03 -2.5107E-02 1.3076E-02 -4.3081E-03 9.7738E-04 -1.5628E-04 1.7685E-05 S13 -3.9779E-02 7.1389E-03 -1.6174E-03 8.8926E-04 -2.8927E-04 5.3792E-05 -6.2675E-06 S14 -4.4573E-02 8.4413E-03 -1.7024E-03 3.5919E-04 -6.3340E-05 8.4114E-06 -8.1406E-07

[0146] Table 14

[0147] Face number A18 A20 A22 A24 A26 A28 A30 S1 -8.0706E-05 5.2996E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 1.1437E-04 -6.5710E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 -2.0769E-04 1.8207E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 1.9496E-03 -2.0493E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 4.0152E-03 -4.1876E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 -3.6974E+00 2.1920E+00 -9.2453E-01 2.7062E-01 -5.2230E-02 5.9736E-03 -3.0654E-04 S7 -1.1696E-02 2.5881E-03 -3.6863E-04 3.0791E-05 -1.1549E-06 0.0000E+00 0.0000E+00 S8 -1.8799E-02 6.8804E-03 -1.7877E-03 3.2137E-04 -3.7969E-05 2.6503E-06 -8.2761E-08 S9 4.7528E-03 -1.3246E-03 2.6409E-04 -3.6860E-05 3.4172E-06 -1.8856E-07 4.6728E-09 S10 8.9085E-05 -2.1151E-05 3.1848E-06 -3.1202E-07 1.9316E-08 -6.8755E-10 1.0739E-11 S11 1.3138E-05 -8.9787E-07 3.8904E-08 -9.6872E-10 1.0566E-11 0.0000E+00 0.0000E+00 S12 -1.3983E-06 7.4992E-08 -2.5828E-09 5.1245E-11 -4.4290E-13 0.0000E+00 0.0000E+00 S13 4.7721E-07 -2.3834E-08 7.5479E-10 -1.3777E-11 1.1059E-13 0.0000E+00 0.0000E+00 S14 5.5994E-08 -2.6468E-09 8.1399E-11 -1.4632E-12 1.1646E-14 0.0000E+00 0.0000E+00

[0148] Table 15

[0149] Fig. 10A The axial chromatic aberration curve of the optical imaging lens of Example 5 is shown, which indicates the deviation of light of different wavelengths from the focal point behind the lens. Fig. 10B The astigmatism curve of the optical imaging lens of Example 5 is shown, which represents the meridional image curvature and the sagittal image curvature. Fig. 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. Fig. 10D The magnification 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. FIG. 10A to FIG. 10D It can be seen that the optical imaging lens provided in Example 5 can achieve good imaging quality.

[0150] Example 6

[0151] The following reference Figures 11 to 12D An optical imaging lens according to Example 6 of the present application is described. Fig.11 A schematic structural diagram of an optical imaging lens according to Example 6 of the present application is shown.

[0152] like Fig.11As shown, the optical imaging lens includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8 and an imaging surface S17.

[0153] The first lens E1 has positive power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has negative power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has positive power, and its object side surface S5 is convex, and its image side surface S6 is concave. The fourth lens E4 has negative power, and its object side surface S7 is convex, and its image side surface S8 is concave. The fifth lens E5 has negative power, and its object side surface S9 is concave, and its image side surface S10 is concave. The sixth lens E6 has positive power, and its object side surface S11 is convex, and its image side surface S12 is concave. The seventh lens E7 has negative power, and its object side surface S13 is concave, and its image side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. The light from the object passes through each surface S1 to S16 in sequence and is finally imaged on the imaging surface S17.

[0154] In this embodiment, the total effective focal length of the optical imaging lens is f=6.69 mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S17 is 7.75 mm, half of the diagonal length of the effective pixel area on the imaging surface S17 is ImgH=5.75 mm, and the maximum half field of view Semi-FOV of the optical imaging lens is 40.1°.

[0155] Table 16 shows a basic parameter table of the optical imaging lens of Example 6, wherein the units of the radius of curvature, thickness and focal length are all millimeters (mm).

[0156]

[0157]

[0158] Table 16

[0159] In Example 6, 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 17 below lists 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 Table 18 gives the high-order coefficients A of the aspherical mirror surfaces S1-S14 that can be used in Example 6. 18 , A 20 , A 22 , A 24 , A26 , A 28 and A 30 .

[0160] Face number A4 A6 A8 A10 A12 A14 A16 S1 1.3116E-03 -8.2731E-04 4.3965E-03 -6.8576E-03 5.7542E-03 -2.8452E-03 8.2712E-04 S2 -3.1546E-02 3.8855E-02 -3.3206E-02 2.1579E-02 -1.0757E-02 3.8259E-03 -8.8832E-04 S3 -2.3682E-02 3.2325E-02 -2.2342E-02 1.1226E-02 -3.8517E-03 8.0552E-04 -3.0245E-05 S4 -1.3565E-02 2.3006E-02 -3.9330E-02 6.3085E-02 -6.6958E-02 4.5049E-02 -1.8415E-02 S5 -1.9976E-02 2.7616E-02 -7.7670E-02 1.1975E-01 -1.2160E-01 7.9335E-02 -3.1875E-02 S6 -1.2112E-02 -3.9554E-02 2.6395E-01 -9.6465E-01 2.2595E+00 -3.6306E+00 4.1244E+00 S7 -1.2607E-02 -7.1878E-02 1.9053E-01 -3.0542E-01 3.2375E-01 -2.3471E-01 1.1788E-01 S8 -2.0932E-02 -1.1405E-02 1.9315E-02 -3.5185E-02 4.9187E-02 -4.9044E-02 3.4792E-02 S9 6.3278E-02 -3.7635E-02 -1.9304E-02 7.0882E-02 -8.3146E-02 5.8650E-02 -2.7948E-02 S10 -2.6884E-02 -1.1141E-02 3.0615E-02 -2.4440E-02 1.0819E-02 -2.9655E-03 4.8489E-04 S11 -9.4977E-02 3.2859E-02 -1.3895E-02 5.1850E-03 -1.6772E-03 4.1093E-04 -6.9021E-05 S12 5.5765E-03 -2.7829E-02 1.5561E-02 -5.6086E-03 1.3936E-03 -2.4321E-04 2.9984E-05 S13 -3.8420E-02 4.8281E-03 9.8182E-05 1.9258E-04 -1.1593E-04 2.5691E-05 -3.2051E-06 S14 -4.7868E-02 1.0554E-02 -2.3384E-03 4.8114E-04 -7.7770E-05 9.2049E-06 -7.8459E-07

[0161] Table 17

[0162] Face number A18 A20 A22 A24 A26 A28 A30 S1 -1.3173E-04 8.8186E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 1.1868E-04 -6.8465E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 -2.3565E-05 3.7039E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 4.1893E-03 -4.0620E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 7.1945E-03 -6.9962E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 -3.3597E+00 1.9674E+00 -8.2044E-01 2.3754E-01 -4.5349E-02 5.1306E-03 -2.6043E-04 S7 -4.0902E-02 9.6238E-03 -1.4673E-03 1.3091E-04 -5.1918E-06 0.0000E+00 0.0000E+00 S8 -1.7666E-02 6.4262E-03 -1.6585E-03 2.9612E-04 -3.4747E-05 2.4089E-06 -7.4712E-08 S9 9.4000E-03 -2.2673E-03 3.9132E-04 -4.7315E-05 3.8156E-06 -1.8460E-07 4.0553E-09 S10 -2.9897E-05 -5.8076E-06 1.7421E-06 -2.1785E-07 1.5413E-08 -6.0113E-10 1.0096E-11 S11 7.7049E-06 -5.6183E-07 2.5749E-08 -6.7430E-10 7.7074E-12 0.0000E+00 0.0000E+00 S12 -2.5886E-06 1.5254E-07 -5.8288E-09 1.2996E-10 -1.2826E-12 0.0000E+00 0.0000E+00 S13 2.5086E-07 -1.2633E-08 3.9915E-10 -7.2246E-12 5.7286E-14 0.0000E+00 0.0000E+00 S14 4.7562E-08 -1.9993E-09 5.5411E-11 -9.1115E-13 6.7347E-15 0.0000E+00 0.0000E+00

[0163] Table 18

[0164] Fig. 12A The axial chromatic aberration curve of the optical imaging lens of Example 6 is shown, which indicates the deviation of light of different wavelengths from the focal point behind the lens. Fig. 12B The astigmatism curve of the optical imaging lens of Example 6 is shown, which represents the meridional image curvature and the sagittal image curvature. Fig. 12C The distortion curve of the optical imaging lens of Example 6 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig.12D The magnification 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. FIG. 12A to FIG. 12D It can be seen that the optical imaging lens provided in Example 6 can achieve good imaging quality.

[0165] In summary, Examples 1 to 6 respectively satisfy the relationships shown in Table 19.

[0166] Conditional / Example 1 2 3 4 5 6 f / EPD 1.85 1.85 1.85 1.85 1.85 1.86 TTL / ImgH 1.35 1.35 1.35 1.35 1.35 1.35 f×tan(Semi-FOV)(mm) 5.65 5.65 5.65 5.65 5.65 5.64 f1 / f6+f7 / f5 1.04 1.22 1.20 1.23 1.36 1.23 f123 / f567 -0.43 -0.52 -0.53 -0.56 -0.54 -0.23 (R3-R4) / f2 -0.41 -0.35 -0.33 -0.34 -0.36 -0.47 ET1 / ET5 0.81 0.70 0.74 0.68 0.62 0.79 ET6 / CT6 0.74 0.64 0.65 0.64 0.64 0.63 SAG52 / SAG51 0.98 0.90 0.94 0.87 0.78 0.97 SAG71 / SAG72 0.86 0.90 0.90 0.88 0.87 0.88 (R11+R12) / (R2-R1) 0.44 0.44 0.45 0.43 0.43 0.37 R5 / R6 0.99 0.98 1.92 0.83 0.83 0.80 (R7+R9) / (R7-R9) 0.46 0.45 0.37 0.43 0.52 0.55 R14 / R13 -0.98 -0.48 -0.47 -0.47 -0.48 -0.46 CT1 / (CT2+CT3+CT4) 0.91 0.90 0.90 0.91 0.89 0.96 (T45+CT5+T56) / (T67+CT7) 0.77 0.79 0.79 0.79 0.77 0.63

[0167] Table 19

[0168] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. An optical imaging lens, characterized in that: Along the optical axis from the object side to the image side, they include: The first lens 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; a third lens having optical power; a fourth lens having optical power and having a convex object-side surface; a fifth lens having negative optical power, whose object side surface is concave; a sixth lens element having positive refractive power, whose object-side surface is convex and whose image-side surface is concave; and The seventh lens element has a negative optical power, and its object side surface is concave and its image side surface is concave; At least one of the third lens and the fourth lens has positive refractive power; The number of lenses having optical power in the optical imaging lens is seven; The effective focal length f1 of the first lens, the effective focal length f5 of the fifth lens, the effective focal length f6 of the sixth lens and the effective focal length f7 of the seventh lens satisfy: 1.0< f1 / f6+f7 / f5≤1.36; The effective focal length f of the optical imaging lens and half of the maximum field of view Semi-FOV of the optical imaging lens satisfy: 5.5 mm<f*tan(Semi-FOV)≤5.65 mm; The curvature radius R7 of the object side surface of the fourth lens and the curvature radius R9 of the object side surface of the fifth lens satisfy: 0.37≤(R7+R9) / (R7-R9)≤0.55; and 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: -1 <R14 / R13≤-0.46。 2. The optical imaging lens according to claim 1, wherein: The effective focal length f of the optical imaging lens and the entrance pupil diameter of the optical imaging lens satisfy: 1.84 <f / EPD<1.87。 3. The optical imaging lens according to claim 2, wherein: The distance TTL from the object side of the first lens of the optical imaging lens to the imaging surface of the optical imaging lens on the optical axis and half the diagonal length ImgH of the effective pixel area on the imaging surface satisfy: TTL / ImgH<1.

4.

4. The optical imaging lens according to claim 1, wherein: The combined focal length f123 of the first lens, the second lens and the third lens and the combined focal length f567 of the fifth lens, the sixth lens and the seventh lens satisfy: -0.6 <f123 / f567<-0.2。 5. The optical imaging lens according to claim 1, wherein: The effective focal length f2 of the second lens, the curvature radius R3 of the object side surface of the second lens, and the curvature radius R4 of the image side surface of the second lens satisfy: -0.5<(R3-R4) / f2<-0.

3.

6. The optical imaging lens according to claim 1, wherein: The edge thickness ET1 of the first lens and the edge thickness ET5 of the fifth lens satisfy: 0.6 <ET1 / ET5≤0.81。 7. The optical imaging lens according to claim 1, wherein: The edge thickness ET6 of the sixth lens and the center thickness CT6 of the sixth lens satisfy: 0.6 <ET6 / CT6≤0.74。 8. The optical imaging lens according to claim 1, wherein: The on-axis distance SAG51 between the intersection of the object side surface of the fifth lens and the optical axis to the effective radius vertex of the object side surface of the fifth lens and the on-axis distance SAG52 between the intersection of the image side surface of the fifth lens and the optical axis to the effective radius vertex of the image side surface of the fifth lens satisfy: 0.78≤SAG52 / SAG51<1.

0.

9. The optical imaging lens according to claim 1, wherein: An axial 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 and an axial 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 seventh lens satisfy: 0.86≤SAG71 / SAG72≤0.

90.

10. 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, the curvature radius R11 of the object-side surface of the sixth lens, and the curvature radius R12 of the image-side surface of the sixth lens satisfy: 0.37≤(R11+R12) / (R2-R1)≤0.

45.

11. The optical imaging lens according to claim 1, wherein: The curvature radius R5 of the object side surface of the third lens and the curvature radius R6 of the image side surface of the third lens satisfy: 0.80≤R5 / R6≤1.

92.

12. The optical imaging lens according to claim 1, wherein: The center thickness CT1 of the first lens on the optical axis, the center thickness CT2 of the second lens on the optical axis, the center thickness CT3 of the third lens on the optical axis, and the center thickness CT4 of the fourth lens on the optical axis satisfy: 0.89≤CT1 / (CT2+CT3+CT4)<1.

0.

13. The optical imaging lens according to any one of claims 1 to 12, characterized in that: The center thickness CT5 of the fifth lens on the optical axis, the center thickness CT7 of the seventh lens on the optical axis, the air interval T45 between the fourth lens and the fifth lens on the optical axis, the air interval T56 between the fifth lens and the sixth lens on the optical axis, and the air interval T67 between the sixth lens and the seventh lens on the optical axis satisfy: 0.6<(T45+CT5+T56) / (T67+CT7)<0.8.

Images