An optical imaging lens

Abstract

The present invention discloses an optical imaging lens, comprising nine lenses, which are arranged in order from the object side to the image side: a first lens with positive optical power; a second lens with positive optical power, whose object side is convex and whose image side is concave; a third lens with optical power, whose object side is convex and whose image side is concave; a fourth lens with optical power; a fifth lens with optical power; a sixth lens with optical power; a seventh lens with positive optical power; an eighth lens with optical power; a ninth lens with negative optical power, whose object side is concave and whose image side is concave; wherein the above nine lenses are independent of each other and have air gaps on the optical axis. The technical solution of the present invention provides a nine-piece optical imaging system with a large image surface, ultra-thinness and high imaging quality, so that each lens has a compact structure, good processability and low system tolerance sensitivity, so that the patent has high practicality.

Description

Technical Field

[0001] The invention relates to an optical imaging lens, in particular to an optical imaging lens composed of nine lenses. Background Art

[0002] With the rapid development of science and technology, the camera lenses suitable for portable electronic products are changing with each passing day. People have higher and higher requirements for the imaging quality of camera lenses. Ultra-large image plane, ultra-thin ultra-clear mobile phone lenses are becoming increasingly popular. At the same time, the performance improvement and pixel size reduction of the photosensitive elements commonly used in mobile phone imaging lenses, such as photosensitive coupling devices (CCDs) or complementary metal oxide semiconductor devices (CMOSs), have put forward higher requirements for the corresponding optical imaging lenses. In order to meet the market demand for camera lenses with more design freedom, the present invention provides a nine-piece large image plane, ultra-thin, high-quality imaging optical imaging system. Summary of the invention

[0003] Based on the above problems, the present invention proposes an optical lens with nine lenses, which can further improve image quality and control aberrations compared to lenses with eight or less lenses in the prior art.

[0004] The present invention discloses an optical imaging lens, comprising nine lenses, which are arranged in order from the object side to the image side: a first lens with positive optical power; a second lens with positive optical power, whose object side is convex and whose image side is concave; a third lens with optical power, whose object side is convex and whose image side is concave; a fourth lens with optical power; a fifth lens with optical power; a sixth lens with optical power; a seventh lens with positive optical power; an eighth lens with optical power; and a ninth lens with negative optical power, whose object side is concave and whose image side is concave. The above nine lenses are independent of each other and have air intervals on the optical axis.

[0005] According to one embodiment of the present invention, the on-axis distance TTL from the object side surface to the image plane of the first lens and the maximum half image height ImgH satisfy the following relationship: TTL / ImgH≤1.25.

[0006] According to one embodiment of the present invention, the on-axis distance TTL from the object side to the image plane of the first lens and the maximum half image height ImgH satisfy: 4.8mm≤ImgH 2 / TTL≤6.0mm.

[0007] According to one embodiment of the present invention, the effective focal length f1 of the first lens and the effective focal length f of the optical imaging lens satisfy the following relationship: 1.8 <f1 / f<2.5。

[0008] According to one embodiment of the present invention, the effective focal length f of the optical imaging lens and the effective focal length f2 of the second lens satisfy the following: <f / f2<0.5。

[0009] According to one embodiment of the present invention, the maximum field of view FOV of the optical imaging lens satisfies: 93° <FOV<103°。

[0010] According to one embodiment of the present invention, the radius of curvature R15 of the object side surface of the eighth lens, the radius of curvature R16 of the image side surface of the eighth lens, 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 satisfy: -1.0<(R15+R16) / (R13+R14)<-0.5.

[0011] According to one embodiment of the present invention, the effective focal length f5 of the fifth lens, the effective focal length f7 of the seventh lens, and the effective focal length f8 of the eighth lens satisfy the following conditions: 0.7 <f5 / (f7+f8)<1.2。

[0012] According to one embodiment of the present invention, the effective semi-aperture DT22 of the image side surface of the second lens and the edge thickness ET9 of the ninth lens satisfy the following conditions: 0.8 <DT22 / ET9<1.3。

[0013] According to one embodiment of the present invention, the on-axis distance SAG61 between the intersection of the object side surface of the sixth lens and the optical axis to the effective radius vertex of the object side surface of the sixth lens and the on-axis distance SAG62 between the intersection of the image side surface of the sixth lens and the optical axis to the effective radius vertex of the image side surface of the sixth lens satisfy the following: 1.4 <SAG61 / SAG62<2.4。

[0014] According to one embodiment of the present invention, the air interval T67 between the sixth lens and the seventh lens on the optical axis, the air interval T78 between the seventh lens and the eighth lens on the optical axis, and the air interval T89 between the eighth lens and the ninth lens on the optical axis satisfy: 0.9<(T67+T78) / T89<1.4.

[0015] According to one embodiment of the present invention, the effective focal length f6 of the sixth lens and the effective focal length f9 of the ninth lens satisfy the following relationship: 2.7 <f6 / f9<3.2。

[0016] According to one embodiment of the present invention, the center thickness CT7 of the seventh lens on the optical axis and the edge thickness ET7 of the seventh lens satisfy the following conditions: 1.5 <CT7 / ET7<2.5。

[0017] In one aspect, the present invention provides an optical imaging lens, wherein each lens is independent of each other, and comprises nine lenses with air spacers. Among them, the axial distance TTL from the object side surface of the first lens to the image plane, the maximum half image height ImgH, the effective focal length f1 of the first lens, and the effective focal length f of the optical imaging lens satisfy the following conditions: TTL / ImgH≤1.25;

[0018] 4.8mm≤ImgH 2 / TTL≤6.0mm;

[0019] 1.8 <f1 / f<2.5。

[0020] According to one embodiment of the present invention, the effective focal length f of the optical imaging lens, the effective focal length f2 of the second lens, and the maximum field of view FOV of the optical imaging lens satisfy the following conditions:

[0021] 0 <f / f2<0.5;

[0022] 93° <FOV<103°。

[0023] According to one embodiment of the present invention, the radius of curvature R15 of the object side surface of the eighth lens, the radius of curvature R16 of the image side surface of the eighth lens, the radius of curvature R13 of the object side surface of the seventh lens, the radius of curvature R14 of the image side surface of the seventh lens, the effective focal length f5 of the fifth lens, the effective focal length f7 of the seventh lens, and the effective focal length f8 of the eighth lens satisfy the following:

[0024] -1.0<(R15+R16) / (R13+R14)<-0.5;

[0025] 0.7 <f5 / (f7+f8)<1.2。

[0026] According to one embodiment of the present invention, the effective semi-aperture DT22 of the image side surface of the second lens, the edge thickness ET9 of the ninth lens, the on-axis distance SAG61 between the intersection of the object side surface of the sixth lens and the optical axis to the effective radius vertex of the object side surface of the sixth lens, and the on-axis distance SAG62 between the intersection of the image side surface of the sixth lens and the optical axis to the effective radius vertex of the image side surface of the sixth lens satisfy the following:

[0027] 0.8 <DT22 / ET9<1.3;

[0028] 1.4 <SAG61 / SAG62<2.4。

[0029] According to one embodiment of the present invention, the air interval T67 between the sixth lens and the seventh lens on the optical axis, the air interval T78 between the seventh lens and the eighth lens on the optical axis, the air interval T89 between the eighth lens and the ninth lens on the optical axis, the effective focal length f6 of the sixth lens, and the effective focal length f9 of the ninth lens satisfy the following conditions:

[0030] 0.9<(T67+T78) / T89<1.4;

[0031] 2.7 <f6 / f9<3.2。

[0032] According to one embodiment of the present invention, the center thickness CT7 of the seventh lens on the optical axis, the edge thickness ET7 of the seventh lens, the curvature radius R15 of the object side surface of the eighth lens, the curvature radius R16 of the image side surface of the eighth 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 the following conditions:

[0033] 1.5 <CT7 / ET7<2.5;

[0034] -1.0<(R15+R16) / (R13+R14)<-0.5.

[0035] In one aspect, the present invention provides an optical imaging lens, wherein each lens is independent of each other, and comprises nine lenses with air gaps. Among them, the effective focal length f of the optical imaging lens, the effective focal length f2 of the second lens, the maximum field of view FOV of the optical imaging lens, the curvature radius R15 of the object side surface of the eighth lens, the curvature radius R16 of the image side surface of the eighth 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 the following conditions:

[0036] 0 <f / f2<0.5;

[0037] 93° <FOV<103°。

[0038] -1.0<(R15+R16) / (R13+R14)<-0.5.

[0039] According to one embodiment of the present invention, the axial distance TTL from the object side surface to the image surface of the first lens, the maximum half image height I mgH, the effective half aperture DT22 of the image side surface of the second lens, and the edge thickness ET9 of the ninth lens satisfy the following conditions:

[0040] TTL / ImgH≤1.25;

[0041] 0.8 <DT22 / ET9<1.3。

[0042] According to one embodiment of the present invention, the on-axis distance TTL from the object side surface of the first lens to the image surface, the maximum half image height ImgH, the on-axis distance SAG61 between the intersection of the object side surface of the sixth lens and the optical axis to the vertex of the effective radius of the object side surface of the sixth lens, and the on-axis distance SAG62 between the intersection of the image side surface of the sixth lens and the optical axis to the vertex of the effective radius of the image side surface of the sixth lens satisfy the following conditions:

[0043] 4.8mm≤ImgH2 / TTL≤6.0mm;

[0044] 1.4 <SAG61 / SAG62<2.4。

[0045] According to one embodiment of the present invention, the effective focal length f1 of the first lens, the effective focal length f, of the optical imaging lens, the air interval T67 between the sixth lens and the seventh lens on the optical axis, the air interval T78 between the seventh lens and the eighth lens on the optical axis, and the air interval T89 between the eighth lens and the ninth lens on the optical axis satisfy the following conditions:

[0046] 1.8 <f1 / f<2.5;

[0047] 0.9<(T67+T78) / T89<1.4.

[0048] According to one embodiment of the present invention, the effective focal length f5 of the fifth lens, the effective focal length f7 of the seventh lens, the effective focal length f8 of the eighth lens, the effective focal length f6 of the sixth lens, and the effective focal length f9 of the ninth lens satisfy the following:

[0049] 0.7 <f5 / (f7+f8)<1.2;

[0050] 2.7 <f6 / f9<3.2。

[0051] According to one embodiment of the present invention, the air interval T67 between the sixth lens and the seventh lens on the optical axis, the air interval T78 between the seventh lens and the eighth lens on the optical axis, the air interval T89 between the eighth lens and the ninth lens on the optical axis, the center thickness CT7 of the seventh lens on the optical axis and the edge thickness ET7 of the seventh lens satisfy the following conditions:

[0052] 0.9<(T67+T78) / T89<1.4;

[0053] 1.5 <CT7 / ET7<2.5。

[0054] In one aspect, the present invention provides an optical imaging lens, wherein each lens is independent of each other, and comprises nine lenses with air gaps. Among them, the effective focal length f5 of the fifth lens, the effective focal length f7 of the seventh lens, the effective focal length f8 of the eighth lens, the effective semi-aperture DT22 of the image side surface of the second lens, the edge thickness ET9 of the ninth lens, the axial distance SAG61 between the intersection of the object side surface of the sixth lens and the optical axis to the effective radius vertex 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 to the effective radius vertex of the image side surface of the sixth lens satisfy the following conditions:

[0055] 0.7 <f5 / (f7+f8)<1.2;

[0056] 0.8 <DT22 / ET9<1.3;

[0057] 1.4 <SAG61 / SAG62<2.4。

[0058] According to one embodiment of the present invention, the on-axis distance TTL from the object side surface to the image surface of the first lens, the maximum half image height I mgH, the center thickness CT7 of the seventh lens on the optical axis, and the edge thickness ET7 of the seventh lens satisfy the following conditions:

[0059] TTL / ImgH≤1.25;

[0060] 1.5 <CT7 / ET7<2.5。

[0061] According to one embodiment of the present invention, the on-axis distance TTL from the object side surface of the first lens to the image plane, the maximum half image height I mgH, the effective focal length f6 of the sixth lens, and the effective focal length f9 of the ninth lens satisfy the following conditions:

[0062] 4.8mm≤ImgH2 / TTL≤6.0mm;

[0063] 2.7 <f6 / f9<3.2。

[0064] According to one embodiment of the present invention, the effective focal length f1 of the first lens, the effective focal length f of the optical imaging lens, the air interval T67 between the sixth lens and the seventh lens on the optical axis, the air interval T78 between the seventh lens and the eighth lens on the optical axis, and the air interval T89 between the eighth lens and the ninth lens on the optical axis satisfy the following conditions:

[0065] 1.8 <f1 / f<2.5;

[0066] 0.9<(T67+T78) / T89<1.4.

[0067] According to one embodiment of the present invention, the effective focal length f of the optical imaging lens, the effective focal length f2 of the second lens, the curvature radius R15 of the object side surface of the eighth lens, the curvature radius R16 of the image side surface of the eighth 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 the following conditions:

[0068] 0 <f / f2<0.5;

[0069] -1.0<(R15+R16) / (R13+R14)<-0.5.

[0070] According to one embodiment of the present invention, the maximum field of view FOV of the optical imaging lens, the effective semi-aperture DT22 of the image side of the second lens, and the edge thickness ET9 of the ninth lens satisfy the following conditions:

[0071] 93° <FOV<103°;

[0072] 0.8 <DT22 / ET9<1.3。

[0073] Positive effects of the present invention: Using the technical solution provided by the present invention, the image quality can be further improved and the aberration can be controlled through the ultra-large image surface ultra-clear nine-piece camera lens group, so as to obtain good shooting effects. At the same time, each lens has a compact structure, good processability, and low system tolerance sensitivity, which makes this patent highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0074] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0075] Figure 1 FIG. 1 is a schematic structural diagram of an optical imaging lens according to a first embodiment of the present invention;

[0076] Figure 2-Figure 5 1. The figure shows an axial chromatic aberration curve, an astigmatism curve, a distortion curve and a magnification chromatic aberration curve of the optical imaging lens according to the first embodiment of the present invention;

[0077] Figure 6 FIG. 2 is a schematic structural diagram of an optical imaging lens according to a second embodiment of the present invention;

[0078] Figure 7-Figure 10 1. The figure shows an axial chromatic aberration curve, an astigmatism curve, a distortion curve and a magnification chromatic aberration curve of the optical imaging lens according to the second embodiment of the present invention;

[0079] Fig.11 FIG. 2 is a schematic structural diagram of an optical imaging lens according to a third embodiment of the present invention;

[0080] Figure 12-Figure 15 axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens according to the third embodiment of the present invention;

[0081] Fig.16 FIG. 4 is a schematic structural diagram of an optical imaging lens according to a fourth embodiment of the present invention;

[0082] Figure 17-Figure 20 FIG. 1 is an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical imaging lens according to the fourth embodiment of the present invention;

[0083] Fig.21 FIG. 2 is a schematic structural diagram of an optical imaging lens according to a fifth embodiment of the present invention;

[0084] Figure 22-Figure 25 FIG. 1 is an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical imaging lens according to the fifth embodiment of the present invention;

[0085] Fig.26FIG. 1 is a schematic structural diagram of an optical imaging lens according to a sixth embodiment of the present invention;

[0086] Figure 27-Figure 30 FIG. 1 is an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical imaging lens according to the sixth embodiment of the present invention;

[0087] Fig.31 FIG. 2 is a schematic structural diagram of an optical imaging lens according to a seventh embodiment of the present invention;

[0088] Figure 32-Figure 35 FIG. 1 is an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical imaging lens according to the seventh embodiment of the present invention; DETAILED DESCRIPTION

[0089] 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.

[0090] 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.

[0091] 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.

[0092] 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.

[0093] 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.

[0094] 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 way unless explicitly defined in this article.

[0095] 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.

[0096] The features, principles and other aspects of the present application are described in detail below.

[0097] According to an exemplary embodiment of the present application, the optical imaging lens may include nine lenses, which are, from the object side to the image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens and a ninth lens; wherein each lens is independent of each other and has an air gap on the optical axis.

[0098] In the embodiment of the present application, the first lens has positive focal power; the second lens has positive focal power, and its object side is convex and its image side is concave; the third lens has focal power, and its object side is convex and its image side is concave; the fourth lens has focal power; the fifth lens has focal power; the sixth lens has focal power; the seventh lens has positive focal power; the eighth lens has focal power; the ninth lens has negative focal power, and its object side is concave and its image side is concave. The above nine lenses are independent of each other and have air intervals on the optical axis; the first and second lenses with positive focal power are conducive to the convergence of incident light; the second and third lenses with convex surface on the object side and concave surface on the image side are conducive to compressing the aperture position, reducing pupil aberration and improving imaging quality; the seventh lens with positive focal power is conducive to balancing the amount of astigmatism generated by the front and rear components of the system; the ninth lens with negative focal power is conducive to improving the incident angle of light incident on the image plane.

[0099] In the embodiments of the present application, the optical imaging lens according to the present application can satisfy TTL / ImgH ≤ 1.25; where TTL is the on-axis distance from the object side of the first lens to the image plane, and ImgH is the maximum semi-image height; by reasonably controlling the ratio of the total system length to the image height within a reasonable range, it is beneficial to compress the total system length and achieve the characteristics of ultra-thin and miniaturization. More specifically, TTL and ImgH can satisfy 1.09 ≤ TTL / ImgH ≤ 1.25, preferably 1.13 ≤ TTL / ImgH ≤ 1.20.

[0100] In the embodiments of the present application, the optical imaging lens according to the present application can satisfy 4.8mm ≤ ImgH 2 / TTL ≤ 6.0mm; where TTL is the on-axis distance from the object side of the first lens to the image plane, and ImgH is the maximum semi-image height; by reasonably setting the range of this conditional expression, on the basis of achieving ultra-thin and miniaturization, the optical imaging lens can further obtain more scene content and enrich the imaging information. More specifically, ImgH 2 and TTL can satisfy 4.8mm ≤ ImgH 2 / TTL ≤ 5.97mm, preferably 4.9mm ≤ ImgH 2 / TTL ≤ 5.58mm.

[0101] In the embodiments of the present application, the optical imaging lens according to the present application can satisfy 1.8 < f1 / f < 2.5; where f1 is the effective focal length of the first lens, and f is the effective focal length of the optical imaging lens; by reasonably controlling the ratio of the first lens to the system focal length, the deflection angle of light can be reduced, and the imaging quality of the optical imaging lens can be improved. More specifically, f1 and f can satisfy 1.86 ≤ f1 / f ≤ 2.37, preferably 1.96 ≤ f1 / f ≤ 2.20.

[0102] In the embodiments of the present application, the optical imaging lens according to the present application can satisfy 0 < f / f2 < 0.5; where f is the effective focal length of the optical imaging lens, and f2 is the effective focal length of the second lens; by reasonably controlling this conditional expression within a certain range, the axial spherical aberration generated by it can be constrained within a reasonable interval, and the imaging quality of the axial field of view can be ensured. More specifically, f and f2 can satisfy 0.05 ≤ f / f2 ≤ 0.13, preferably

[0103] 0.08 ≤ f / f2 ≤ 0.13.

[0104] In the embodiments of the present application, the optical imaging lens according to the present application can satisfy 93° < FOV < 103°; where FOV is the maximum field of view angle of the optical imaging lens; by controlling the field of view angle of the lens within a certain range, it is beneficial to reasonably collect object space information of the optical system. More specifically, the maximum field of view angle FOV of the optical lens can satisfy 93.5° ≤ FOV ≤ 100.7°, preferably 95.2° ≤ FOV ≤ 98.8°.

[0105] In the embodiments of the present application, the optical imaging lens according to the present application can satisfy -1.0 < (R15 + R16) / (R13 + R14) < -0.5; where R15 is the curvature radius of the object side surface of the eighth lens, R16 is the curvature radius of the image side surface of the eighth 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; by reasonably controlling the ratio of this conditional expression, the incident angles of the central field light rays reaching these two lenses are smaller, reducing the MTF tolerance sensitivity of the central field. More specifically, R15, R16, R13, and R14 can satisfy -0.96 ≤ (R15 + R16) / (R13 + R14) ≤ -0.53, preferably -0.86 ≤ (R15 + R16) / (R13 + R14) ≤ -0.62.

[0106] In the embodiments of the present application, the optical imaging lens according to the present application can satisfy 0.7 < f5 / (f7 + f8) < 1.2; where f5 is the effective focal length of the fifth lens, f7 is the effective focal length of the seventh lens, and f8 is the effective focal length of the eighth lens; by constraining the ratio of this conditional expression within a reasonable range, the thickness sensitivity of the lens can be effectively reduced and the field curvature can be corrected. More specifically, f5, f7, and f8 can satisfy 0.82 ≤ f5 / (f7 + f8) ≤ 0.91, preferably 0.85 ≤ f5 / (f7 + f8) ≤ 0.91.

[0107] In the embodiments of the present application, the optical imaging lens according to the present application can satisfy 0.8 < DT22 / ET9 < 1.3; where DT22 is the effective semi-aperture of the image side surface of the second lens, and ET9 is the edge thickness of the ninth lens; by controlling this conditional expression within a suitable range, it helps to reduce the step difference and assembly sensitivity between the front lenses, and at the same time, the head size of the system structure can be reduced. More specifically, DT22 and ET9 can satisfy

[0108] 0.92 ≤ DT22 / ET9 ≤ 1.13, preferably 1.10 ≤ DT22 / ET9 ≤ 1.13.

[0109] In the embodiments of the present application, the optical imaging lens according to the present application can satisfy 1.4 < SAG61 / SAG62 < 2.4; where SAG61 is the axial distance 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 SAG62 is the axial 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; by reasonably controlling this conditional expression within a certain range, it is beneficial to reduce the sensitivity of the sixth lens, facilitate the processing and shaping of the lens, and also help to better balance the relationship between realizing the miniaturization of the module and the relative illuminance of the off-axis field of view. More specifically, SAG61 and SAG62 can satisfy 1.56 ≤ SAG61 / SAG62 ≤ 2.27, preferably, 2.06 ≤ SAG61 / SAG62 ≤ 2.27.

[0110] In the embodiments of the present application, the optical imaging lens according to the present application can satisfy 0.9 < (T67 + T78) / T89 < 1.4; where T67 is the air gap between the sixth lens and the seventh lens on the optical axis, T78 is the air gap between the seventh lens and the eighth lens on the optical axis, and T89 is the air gap between the eighth lens and the ninth lens on the optical axis; by reasonably controlling the ratio of this conditional expression, the field curvature of the optical imaging lens can be effectively guaranteed, so as to obtain good imaging quality in the off-axis field of view of the system. More specifically, T67, T78, and T89 can satisfy 1.03 ≤ (T67 + T78) / T89 ≤ 1.24, preferably,

[0111] 1.06 ≤ (T67 + T78) / T89 ≤ 1.16.

[0112] In the embodiments of the present application, the optical imaging lens according to the present application can satisfy 2.7 < f6 / f9 < 3.2; where f6 is the effective focal length of the sixth lens and f9 is the effective focal length of the ninth lens; reasonably distributing the optical powers of the sixth and ninth lenses is beneficial to achromatism, reducing the secondary spectrum of the system, and improving the imaging quality of the system. More specifically, f6 and f9 can satisfy 2.88 ≤ f6 / f9 ≤ 3.03.

[0113] In the embodiments of the present application, the optical imaging lens according to the present application can satisfy 1.5 < CT7 / ET7 < 2.5; where CT7 is the central thickness of the seventh lens on the optical axis and ET7 is the edge thickness of the seventh lens; by restricting the ratio of this conditional expression, the distortion of the system can be reasonably controlled, so that the optical system has good optical performance. More specifically, CT7 and ET7 can satisfy 1.67 ≤ CT7 / ET7 ≤ 2.43, preferably, 2.12 ≤ CT7 / ET7 ≤ 2.43.

[0114] Each of the technical features in the above-mentioned inventive optical imaging lens can be combined and configured to achieve the corresponding effects.

[0115] According to the above-mentioned embodiment of the present application, the optical imaging lens can use multiple lenses, such as the nine lenses mentioned above. By reasonably allocating the focal length, surface shape, center thickness of each lens, and the on-axis spacing between each lens, the structure of each lens can be made compact, and on the basis of achieving ultra-thin miniaturization, the optical imaging lens can further obtain more scene content and enrich imaging information. At the same time, it has good processing and molding properties and low system tolerance sensitivity, making this patent highly practical; electronic products can have the characteristics of high resolution, small size, wide angle, and good imaging quality through the above-mentioned configuration of the optical imaging lens.

[0116] Specific embodiments of the optical imaging lens applicable to the above embodiments are further described below with reference to the accompanying drawings.

[0117] Embodiment 1

[0118] Figure 1 FIG. 1 is a schematic diagram of the structure of the optical imaging lens of the first embodiment of the present application. Figure 1 As shown, the camera lens assembly includes, from the object side to the image side, 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, an eighth lens E8, a ninth lens E9, a filter E10 and an imaging surface S21.

[0119] Among them, the first lens E1 has positive focal power, its object side surface S1 is convex, and the image side surface S2 is concave; the second lens E2 has positive focal power, its object side surface S3 is convex, and the image side surface S4 is concave; the third lens E3 has negative focal power, its object side surface S5 is convex, and the image side surface S6 is concave; the fourth lens E4 has positive focal power, its object side surface S7 is convex, and the image side surface S8 is concave; the fifth lens E5 has positive focal power, its object side surface S9 is convex, and the image side surface S10 is a convex surface; the sixth lens has negative power, its object side surface S11 is a concave surface, and the image side surface S12 is a convex surface; the seventh lens has positive power, its object side surface S13 is a convex surface, and the image side surface S14 is a concave surface; the eighth lens has positive power, its object side surface S15 is a concave surface, and the image side surface S16 is a convex surface; the ninth lens has negative power, its object side surface S17 is a concave surface, and the image side surface S18 is a concave surface; the filter E10 has an object side surface S19 and an image side surface S20. The light from the object passes through each surface S1 to S20 in sequence and is finally imaged on the imaging surface S21.

[0120] Table 1 shows the basic parameters of the optical imaging lens of the first embodiment, wherein the curvature radius, thickness and distance are all in millimeters.

[0121] Face number Surface type Radius of curvature thickness focal length Refractive Index Dispersion coefficient Cone coefficient 0BJ Spherical endless endless ST0 Spherical endless -0.2400 S1 Aspheric 3.5984 0.4004 9.96 1.54 56.1 -5.7806 S2 Aspheric 10.2827 0.1000 -74.3199 S3 Aspheric 6.6409 0.2367 101.95 1.54 56.1 -5.4769 S4 Aspheric 7.4488 0.1000 11.7024 S5 Aspheric 4.6387 0.2000 -20.24 1.64 23.3 -14.7632 S6 Aspheric 3.3575 0.4119 -6.1545 S7 Aspheric 8.5421 0.5221 31.49 1.54 56.1 -2.3474 S8 Aspheric 16.6578 0.3515 -90.0000 S9 Aspheric 8.6190 0.6993 11.65 1.54 56.1 -22.9487 S10 Aspheric -23.3455 0.2007 74.3998 S11 Aspheric -3.4061 0.2000 -10.20 1.64 23.3 -1.8833 S12 Aspheric -7.2931 0.2424 -4.6056 S13 Aspheric 3.2787 0.6045 7.51 1.54 56.1 -0.4074 S14 Aspheric 15.4747 0.6713 -89.2616 S15 Aspheric -7.5205 0.4111 6.69 1.54 56.1 0.8456 S16 Aspheric -2.5019 0.7356 -6.1165 S17 Aspheric -35.0622 0.4000 -3.36 1.54 55.7 88.9201 S18 Aspheric 1.9045 0.5124 -5.3778 S19 Spherical endless 0.2000 1.52 64.2 S20 Spherical endless 0.3000 S21 Spherical endless

[0122] Table 1

[0123] In the first embodiment, the total effective focal length f of the optical imaging lens is 5.36 mm, the total length TTL of the optical imaging lens is 7.50 mm, and half of the diagonal length ImgH of the effective pixel area on the imaging surface S21 of the optical imaging lens is 6.00 mm.

[0124] In the first embodiment, the axial distance TTL from the object side surface of the first lens to the image plane and the maximum half image height ImgH, TTL / ImgH=1.25, satisfy the relationship: TTL / ImgH≤1.25.

[0125] In the first embodiment, the axial distance TTL from the object side of the first lens to the image plane and the maximum half image height ImgH, ImgH 2 / TTL=4.80, satisfying the relationship: 4.8mm≤ImgH 2 / TTL≤6.0mm.

[0126] In the first embodiment, the effective focal length f1 of the first lens and the effective focal length f of the optical imaging lens, f1 / f=1.86, satisfy the relationship: 1.8<f1 / f<2.5.

[0127] In the first embodiment, the effective focal length f of the optical imaging lens and the effective focal length f2 of the second lens, f / f2=0.05, satisfy the relationship: 0<f / f2<0.5.

[0128] In the first embodiment, the maximum field of view FOV of the optical imaging lens, FOV=93.5°, satisfies the relationship: 93°<FOV<103°.

[0129] In the first embodiment, the radius of curvature R15 of the object side surface of the eighth lens, the radius of curvature R16 of the image side surface of the eighth lens, 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, (R15+R16) / (R13+R14)=-0.53, satisfying the relationship: -1.0<(R15+R16) / (R13+R14)<-0.5.

[0130] In the first embodiment, the effective focal length f5 of the fifth lens, the effective focal length f7 of the seventh lens, and the effective focal length f8 of the eighth lens, f5 / (f7+f8)=0.82, satisfying the relationship: <f5 / (f7+f8)<1.2。

[0131] In the first embodiment, the effective semi-aperture DT22 of the image side of the second lens and the edge thickness ET9 of the ninth lens, DT22 / ET9=1.02, satisfy the relationship: 0.8 <DT22 / ET9<1.3

[0132] In the first embodiment, the on-axis distance SAG61 between the intersection of the object side surface of the sixth lens and the optical axis to the effective radius vertex of the object side surface of the sixth lens and the on-axis distance SAG62 between the intersection of the image side surface of the sixth lens and the optical axis to the effective radius vertex of the image side surface of the sixth lens, SAG61 / SAG62=2.27, satisfies the relationship: 1.4 <SAG61 / SAG62<2.4。

[0133] In the first embodiment, the air interval T67 between the sixth lens and the seventh lens on the optical axis, the air interval T78 between the seventh lens and the eighth lens on the optical axis, and the air interval T89 between the eighth lens and the ninth lens on the optical axis, (T67+T78) / T89=1.24, satisfying the relationship: 0.9<(T67+T78) / T89<1.4.

[0134] In the first embodiment, the effective focal length f6 of the sixth lens and the effective focal length f9 of the ninth lens, f6 / f9=3.03, satisfying the relationship: 2.7 <f6 / f9<3.2。

[0135] In the first embodiment, the center thickness CT7 of the seventh lens on the optical axis and the edge thickness ET7 of the seventh lens, CT7 / ET7=2.40, satisfy the relationship: 1.5 <CT7 / ET7<2.5。

[0136] In the first embodiment, the object side surface and the image side surface of any lens from the first lens E1 to the ninth lens E9 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:

[0137]

[0138] 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 (that is, the paraxial curvature c is the reciprocal of the curvature radius R in Table 1 above); k is the cone coefficient (given in Table 1); Ai is the correction coefficient of the i-th order aspheric surface.

[0139] Table 2 below lists the high-order coefficients A4, A6, A8, A10, A12 and A14 of each aspheric surface S1-S18 that can be used for each aspheric lens in the first embodiment of the present application.

[0140] Face number A4 A6 A8 A10 A12 A14 S1 1.1013E-02 -2.3686E-03 1.2524E-03 -1.8531E-03 9.2103E-04 -1.9955E-04 S2 -6.8324E-03 2.6508E-03 1.7389E-03 -4.1446E-03 2.2667E-03 -4.6417E-04 S3 -1.4006E-03 7.4684E-03 -4.9271E-03 7.3501E-04 1.3676E-03 -4.1877E-04 S4 -2.0118E-03 -8.4684E-04 -6.3609E-03 2.0169E-03 1.9844E-03 -6.4734E-04 S5 -2.4814E-02 8.8822E-03 -1.4658E-02 9.8241E-03 -2.1682E-03 8.1717E-05 S6 -1.8238E-02 1.2625E-02 -1.1129E-02 7.8830E-03 -2.5962E-03 3.0197E-04 S7 -5.6478E-03 2.5989E-03 -1.2726E-03 4.0849E-04 -9.3331E-05 8.6970E-06 S8 -1.3751E-02 3.5130E-03 -1.5864E-03 2.4265E-04 -7.7623E-07 -6.6486E-06 S9 -1.6347E-02 4.6458E-04 8.7568E-04 -7.7358E-04 1.8190E-04 -1.4379E-05 S10 -3.0632E-02 1.1751E-02 -6.2603E-03 1.5782E-03 -2.2014E-04 1.4912E-05 S11 2.8541E-02 -8.5253E-03 4.8774E-04 1.4120E-04 -1.4977E-05 -1.6695E-07 S12 1.7280E-02 -1.1389E-02 4.1435E-03 -8.8737E-04 1.0307E-04 -4.7258E-06 S13 -2.0277E-02 8.1392E-04 2.3003E-04 -8.4799E-05 8.4869E-06 -3.6782E-07 S14 1.0435E-02 -6.4623E-03 1.5017E-03 -2.1010E-04 1.5765E-05 -4.8433E-07 S15 -3.4351E-03 4.7075E-05 8.8031E-05 -1.3028E-05 7.8146E-07 -1.5121E-08 S16 2.0549E-04 -3.3223E-04 4.6819E-04 -9.2056E-05 6.7478E-06 -1.7512E-07 S17 -3.2992E-02 1.3927E-03 2.2480E-04 -2.7752E-05 1.6091E-06 -4.5581E-08 S18 -1.8205E-02 2.6382E-03 -2.4985E-04 1.4378E-05 -4.6339E-07 6.1613E-09

[0141] Table 2

[0142] Figure 2 FIG. 1 is an axial chromatic aberration curve of the optical imaging lens in the first embodiment, which indicates the deviation of the convergent focus of light rays of different wavelengths passing through the lens. Figure 3 FIG. 4 is an astigmatism curve of the optical imaging lens in the first embodiment, which represents the meridional image curvature and the sagittal image curvature. Figure 4 FIG. 1 shows a distortion curve of the optical imaging lens in the first embodiment, which indicates the distortion magnitude values ​​corresponding to different image heights. Figure 5 The figure shows the magnification chromatic aberration curve of the optical imaging lens in the first embodiment, which indicates the deviation of different image heights on the imaging surface after the light passes through the lens. Figures 2 to 5 It can be seen that the optical imaging lens provided in the first embodiment can achieve good imaging quality.

[0143] Embodiment 2

[0144] Figure 6 FIG. 1 is a schematic diagram of the structure of an optical imaging lens according to a second embodiment of the present application. Figure 6 As shown, the camera lens assembly includes, from the object side to the image side, 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, an eighth lens E8, a ninth lens E9, a filter E10 and an imaging surface S21.

[0145] Among them, the first lens E1 has positive focal power, its object side surface S1 is convex, and the image side surface S2 is concave; the second lens E2 has positive focal power, its object side surface S3 is convex, and the image side surface S4 is concave; the third lens E3 has negative focal power, its object side surface S5 is convex, and the image side surface S6 is concave; the fourth lens E4 has positive focal power, its object side surface S7 is convex, and the image side surface S8 is concave; the fifth lens E5 has positive focal power, its object side surface S9 is convex, and the image side surface S10 is a convex surface; the sixth lens has negative power, its object side surface S11 is a concave surface, and the image side surface S12 is a convex surface; the seventh lens has positive power, its object side surface S13 is a convex surface, and the image side surface S14 is a concave surface; the eighth lens has positive power, its object side surface S15 is a concave surface, and the image side surface S16 is a convex surface; the ninth lens has negative power, its object side surface S17 is a concave surface, and the image side surface S18 is a concave surface; the filter E10 has an object side surface S19 and an image side surface S20. The light from the object passes through each surface S1 to S20 in sequence and is finally imaged on the imaging surface S21.

[0146] In the second embodiment of the present application, the parameters of each relational expression are the same as those explained in the first embodiment, but the values ​​of each relational expression are listed in Table 3 below.

[0147]

[0148] Table 3

[0149] Table 4 shows the basic parameters of the optical imaging lens of the second embodiment of the present application, wherein the radius of curvature, thickness and distance are all in millimeters.

[0150]

[0151]

[0152] Table 4

[0153] Table 5 below lists the high-order coefficients A4, A6, A8, A10, A12 and A14 of each aspheric surface S1-S18 that can be used for each aspheric lens in the second embodiment of the present application.

[0154]

[0155] Table 5

[0156] Figure 7 FIG. 1 is an axial chromatic aberration curve of the optical imaging lens in the second embodiment of the present application, which indicates that light of different wavelengths deviates from the convergent focus after passing through the lens. Figure 8 FIG. 4 is an astigmatism curve of the optical imaging lens in the second embodiment of the present application, which represents the meridional image curvature and the sagittal image curvature. Fig. 9 FIG. 1 is a distortion curve of the optical imaging lens in the second embodiment of the present application, which indicates the distortion magnitude values ​​corresponding to different image heights. Fig.10 The figure shows the magnification chromatic aberration curve of the optical imaging lens in the second embodiment of the present application, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. Figures 7 to 10 It can be seen that the optical imaging lens provided in the second embodiment of the present application can achieve good imaging quality.

[0157] Embodiment 3

[0158] Fig.11 FIG. 1 is a schematic diagram of the structure of an optical imaging lens according to a third embodiment of the present application. Fig.11 As shown, the camera lens assembly includes, from the object side to the image side, 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, an eighth lens E8, a ninth lens E9, a filter E10 and an imaging surface S21.

[0159] Among them, the first lens E1 has positive focal power, its object side surface S1 is convex, and the image side surface S2 is concave; the second lens E2 has positive focal power, its object side surface S3 is convex, and the image side surface S4 is concave; the third lens E3 has negative focal power, its object side surface S5 is convex, and the image side surface S6 is concave; the fourth lens E4 has positive focal power, its object side surface S7 is convex, and the image side surface S8 is concave; the fifth lens E5 has positive focal power, its object side surface S9 is convex, and the image side surface S10 is a convex surface; the sixth lens has negative power, its object side surface S11 is a concave surface, and the image side surface S12 is a convex surface; the seventh lens has positive power, its object side surface S13 is a convex surface, and the image side surface S14 is a concave surface; the eighth lens has positive power, its object side surface S15 is a concave surface, and the image side surface S16 is a convex surface; the ninth lens has negative power, its object side surface S17 is a concave surface, and the image side surface S18 is a concave surface; the filter E10 has an object side surface S19 and an image side surface S20. The light from the object passes through each surface S1 to S20 in sequence and is finally imaged on the imaging surface S21.

[0160] In the third embodiment of the present application, the parameters of each relational expression are the same as those explained in the first embodiment, but the values ​​of each relational expression are listed in the following Table 6.

[0161]

[0162]

[0163] Table 6

[0164] Table 7 shows basic parameters of the optical imaging lens of the third embodiment of the present application, wherein the radius of curvature, thickness, and distance are all in millimeters.

[0165] Face number Surface type Radius of curvature thickness focal length Refractive Index Dispersion coefficient Cone coefficient OBJ Spherical endless endless STO Spherical endless -0.2200 S1 Aspheric 3.4377 0.3786 10.40 1.54 56.1 -6.4466 S2 Aspheric 8.4107 0.1000 -71.4140 S3 Aspheric 7.3730 0.2532 56.66 1.54 56.1 -8.2761 S4 Aspheric 9.5719 0.1154 10.6985 S5 Aspheric 5.6774 0.2000 -22.61 1.64 23.3 -17.3402 S6 Aspheric 4.0208 0.3758 -6.6504 S7 Aspheric 7.9872 0.6569 27.92 1.54 56.1 -6.6855 S8 Aspheric 16.3434 0.3289 -90.0000 S9 Aspheric 8.2151 0.6516 12.10 1.54 56.1 -25.7367 S10 Aspheric -32.2760 0.1000 90.0000 S11 Aspheric -3.2237 0.2000 -9.72 1.64 23.3 -1.5578 S12 Aspheric -6.8594 0.2379 -3.3632 S13 Aspheric 2.8110 0.5877 7.03 1.54 56.1 -0.8327 S14 Aspheric 9.8085 0.6029 -75.5688 S15 Aspheric -6.7240 0.3507 7.04 1.54 56.1 0.9346 S16 Aspheric -2.4860 0.7570 -6.4139 S17 Aspheric -27.7391 0.3500 -3.31 1.54 55.7 47.2073 S18 Aspheric 1.9032 0.4534 -5.5496 S19 Spherical endless 0.2000 1.52 64.2 S20 Spherical endless 0.3000 S21 Spherical endless

[0166] Table 7

[0167] Table 8 below lists the high-order coefficients A4, A6, A8, A10, A12 and A14 of each aspheric surface S1-S18 that can be used for each aspheric lens in the third embodiment of the present application.

[0168]

[0169]

[0170] Table 8

[0171] Fig.12 FIG. 1 is an axial chromatic aberration curve of the optical imaging lens in the third embodiment of the present application, which indicates that light of different wavelengths deviates from the convergent focus after passing through the lens. Fig.13 FIG. 4 is an astigmatism curve of the optical imaging lens in the third embodiment of the present application, which represents the meridional image curvature and the sagittal image curvature. Fig.14 FIG. 1 is a distortion curve of the optical imaging lens in the third embodiment of the present application, which indicates the distortion magnitude values ​​corresponding to different image heights. Fig.15 The figure shows the magnification chromatic aberration curve of the optical imaging lens in the third embodiment of the present application, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. Figures 12 to 15 It can be seen that the optical imaging lens provided in the third embodiment of the present application can achieve good imaging quality.

[0172] Embodiment 4

[0173] Fig.16 FIG. 4 is a schematic diagram of the structure of an optical imaging lens according to a fourth embodiment of the present application. Fig.16 As shown, the camera lens assembly includes, from the object side to the image side, 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, an eighth lens E8, a ninth lens E9, a filter E10 and an imaging surface S21.

[0174] Among them, the first lens E1 has positive focal power, its object side surface S1 is convex, and the image side surface S2 is concave; the second lens E2 has positive focal power, its object side surface S3 is convex, and the image side surface S4 is concave; the third lens E3 has negative focal power, its object side surface S5 is convex, and the image side surface S6 is concave; the fourth lens E4 has positive focal power, its object side surface S7 is convex, and the image side surface S8 is concave; the fifth lens E5 has positive focal power, its object side surface S9 is convex, and the image side surface S10 is a convex surface; the sixth lens has negative power, its object side surface S11 is a concave surface, and the image side surface S12 is a convex surface; the seventh lens has positive power, its object side surface S13 is a convex surface, and the image side surface S14 is a concave surface; the eighth lens has positive power, its object side surface S15 is a concave surface, and the image side surface S16 is a convex surface; the ninth lens has negative power, its object side surface S17 is a concave surface, and the image side surface S18 is a concave surface; the filter E10 has an object side surface S19 and an image side surface S20. The light from the object passes through each surface S1 to S20 in sequence and is finally imaged on the imaging surface S21.

[0175] In the fourth embodiment of the present application, the parameters of each relational expression are the same as those explained in the first embodiment, but the values ​​of each relational expression are listed in the following Table 9.

[0176]

[0177] Table 9

[0178] Table 10 shows basic parameters of the optical imaging lens of the fourth embodiment of the present application, wherein the radius of curvature, thickness, and distance are all in millimeters.

[0179]

[0180]

[0181] Table 10

[0182] Table 11 below lists the high-order coefficients A4, A6, A8, A10, A12 and A14 of the aspheric surfaces S1-S18 that can be used for the aspheric lenses in the fourth embodiment of the present application.

[0183]

[0184] Table 11

[0185] Fig.17 FIG. 1 is an axial chromatic aberration curve of the optical imaging lens in the fourth embodiment of the present application, which indicates the deviation of the convergent focus of light of different wavelengths after passing through the lens. Fig.18 FIG. 4 shows an astigmatism curve of the optical imaging lens in the fourth embodiment of the present application, which represents the meridional image curvature and the sagittal image curvature. Fig.19 FIG. 4 is a distortion curve of the optical imaging lens in the fourth embodiment of the present application, which indicates the distortion magnitude values ​​corresponding to different image heights. Fig. 20 FIG. 2 is a magnification chromatic aberration curve of the optical imaging lens in the fourth embodiment of the present application, which indicates the deviation of different image heights on the imaging surface after the light passes through the lens. Figures 17 to 20 It can be seen that the optical imaging lens provided in the fourth embodiment of the present application can achieve good imaging quality.

[0186] Embodiment 5

[0187] Fig.21 FIG. 4 is a schematic diagram of the structure of an optical imaging lens according to a fifth embodiment of the present application. Fig.21 As shown, the camera lens assembly includes, from the object side to the image side, 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, an eighth lens E8, a ninth lens E9, a filter E10 and an imaging surface S21.

[0188] Among them, the first lens E1 has positive focal power, its object side surface S1 is convex, and the image side surface S2 is concave; the second lens E2 has positive focal power, its object side surface S3 is convex, and the image side surface S4 is concave; the third lens E3 has negative focal power, its object side surface S5 is convex, and the image side surface S6 is concave; the fourth lens E4 has positive focal power, its object side surface S7 is convex, and the image side surface S8 is concave; the fifth lens E5 has positive focal power, its object side surface S9 is convex, and the image side surface S10 is a convex surface; the sixth lens has negative power, its object side surface S11 is a concave surface, and the image side surface S12 is a convex surface; the seventh lens has positive power, its object side surface S13 is a convex surface, and the image side surface S14 is a concave surface; the eighth lens has positive power, its object side surface S15 is a concave surface, and the image side surface S16 is a convex surface; the ninth lens has negative power, its object side surface S17 is a concave surface, and the image side surface S18 is a concave surface; the filter E10 has an object side surface S19 and an image side surface S20. The light from the object passes through each surface S1 to S20 in sequence and is finally imaged on the imaging surface S21.

[0189] In the fifth embodiment of the present application, the parameters of each relational expression are the same as those explained in the first embodiment, but the values ​​of each relational expression are listed in the following Table 12.

[0190]

[0191] Table 12

[0192] Table 13 shows the basic parameters of the camera lens assembly of the fifth embodiment of the present application, wherein the radius of curvature, thickness, and distance are all in millimeters.

[0193] Face number Surface type Radius of curvature thickness focal length Refractive Index Dispersion coefficient Cone coefficient OBJ Spherical endless endless ST0 Spherical endless -0.2200 S1 Aspheric 3.3094 0.3711 10.88 1.54 56.1 -7.1123 S2 Aspheric 7.2072 0.1000 -77.9820 S3 Aspheric 8.0421 0.2669 39.49 1.54 56.1 -11.2456 S4 Aspheric 12.6984 0.0684 10.9657 S5 Aspheric 5.2123 0.2000 -22.91 1.64 23.3 -20.4657 S6 Aspheric 3.7867 0.3753 -6.8429 S7 Aspheric 8.0577 0.6733 22.93 1.54 56.1 -7.0519 S8 Aspheric 22.0580 0.3527 -90.0000 S9 Aspheric 8.7060 0.6144 13.26 1.54 56.1 -28.5129 S10 Aspheric -41.2259 0.1000 90.0000 S11 Aspheric -3.2233 0.2000 -9.69 1.64 23.3 -1.3769 S12 Aspheric -6.8795 0.1954 -2.8273 S13 Aspheric 2.5971 0.5353 6.81 1.54 56.1 -1.0017 S14 Aspheric 8.0339 0.5670 -55.2531 S15 Aspheric -6.5126 0.3114 7.79 1.54 56.1 0.8230 S16 Aspheric -2.6107 0.7433 -7.3358 S17 Aspheric -27.1905 0.4000 -3.36 1.54 55.7 36.3960 S18 Aspheric 1.9363 0.4256 -5.6850 S19 Spherical endless 0.2000 1.52 64.2 S20 Spherical endless 0.3000 S21 Spherical endless

[0194] Table 13

[0195] Table 14 below lists the high-order coefficients A4, A6, A8, A10, A12 and A14 of each aspheric surface S1-S18 that can be used for each aspheric lens in the fifth embodiment of the present application.

[0196]

[0197]

[0198] Table 14

[0199] Fig. 22 FIG. 1 is an axial chromatic aberration curve of the optical imaging lens in the fifth embodiment of the present application, which indicates that light of different wavelengths deviates from the convergent focus after passing through the lens. Fig.23 FIG. 4 is an astigmatism curve of the optical imaging lens in the fifth embodiment of the present application, which represents the meridional image curvature and the sagittal image curvature. Fig.24FIG. 4 is a distortion curve of the optical imaging lens in the fifth embodiment of the present application, which indicates the distortion magnitude values ​​corresponding to different image heights. Fig.25 FIG. 2 is a magnification chromatic aberration curve of the optical imaging lens in the fifth embodiment of the present application, which indicates the deviation of different image heights on the imaging surface after the light passes through the lens. Figure 22 to Figure 25 It can be seen that the optical imaging lens provided in the fifth embodiment of the present application can achieve good imaging quality.

[0200] Embodiment 6

[0201] Fig.26 FIG. 1 is a schematic diagram of the structure of an optical imaging lens according to a sixth embodiment of the present application. Fig.26 As shown, the camera lens assembly includes, from the object side to the image side, 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, an eighth lens E8, a ninth lens E9, a filter E10 and an imaging surface S21.

[0202] Among them, the first lens E1 has positive focal power, its object side surface S1 is convex, and the image side surface S2 is concave; the second lens E2 has positive focal power, its object side surface S3 is convex, and the image side surface S4 is concave; the third lens E3 has negative focal power, its object side surface S5 is convex, and the image side surface S6 is concave; the fourth lens E4 has positive focal power, its object side surface S7 is convex, and the image side surface S8 is concave; the fifth lens E5 has positive focal power, its object side surface S9 is convex, and the image side surface S10 is a convex surface; the sixth lens has negative power, its object side surface S11 is a concave surface, and the image side surface S12 is a convex surface; the seventh lens has positive power, its object side surface S13 is a convex surface, and the image side surface S14 is a concave surface; the eighth lens has positive power, its object side surface S15 is a concave surface, and the image side surface S16 is a convex surface; the ninth lens has negative power, its object side surface S17 is a concave surface, and the image side surface S18 is a concave surface; the filter E10 has an object side surface S19 and an image side surface S20. The light from the object passes through each surface S1 to S20 in sequence and is finally imaged on the imaging surface S21.

[0203] In the sixth embodiment of the present application, the parameters of each relational expression are the same as those explained in the first embodiment, but the values ​​of each relational expression are listed in the following Table 15.

[0204]

[0205]

[0206] Table 15

[0207] Table 16 shows basic parameters of the optical imaging lens of the sixth embodiment of the present application, wherein the radius of curvature, thickness, and distance are all in millimeters.

[0208] Face number Surface type Radius of curvature thickness focal length Refractive Index Dispersion coefficient Cone coefficient 0BJ Spherical endless endless ST0 Spherical endless -0.2200 S1 Aspheric 3.3757 0.3681 11.20 1.54 56.1 -7.6041 S2 Aspheric 7.2707 0.1000 -79.3450 S3 Aspheric 9.2040 0.2679 38.96 1.54 56.1 -14.9758 S4 Aspheric 16.0951 0.0764 17.4234 S5 Aspheric 6.3262 0.2000 -22.81 1.64 23.3 -21.0792 S6 Aspheric 4.3581 0.3374 -6.8600 S7 Aspheric 8.7782 0.7179 20.80 1.54 56.1 -7.6714 S8 Aspheric 37.9530 0.3635 -90.0000 S9 Aspheric 10.4078 0.6311 13.53 1.54 56.1 -33.4473 S10 Aspheric -24.6447 0.1030 63.6277 S11 Aspheric -2.9928 0.2000 -9.64 1.64 23.3 -1.1838 S12 Aspheric -5.9703 0.2022 -1.4299 S13 Aspheric 2.6038 0.5888 6.70 1.54 56.1 -0.9986 S14 Aspheric 8.3888 0.6025 -55.4816 S15 Aspheric -6.1854 0.3149 8.17 1.54 56.1 0.8028 S16 Aspheric -2.6334 0.7600 -7.3642 S17 Aspheric -23.9282 0.3500 -3.34 1.54 55.7 43.8001 S18 Aspheric 1.9390 0.4264 -5.8410 S19 Spherical endless 0.2000 1.52 64.2 S20 Spherical endless 0.3000 S21 Spherical endless

[0209] Table 16

[0210] Table 17 below gives the high-order coefficients A4, A6, A8, A10, A12 and A14 of each aspheric surface S1-S18 that can be used for each aspheric lens in the sixth embodiment of the present application.

[0211]

[0212]

[0213] Table 17

[0214] Fig. 27 FIG. 1 is an axial chromatic aberration curve of the optical imaging lens in the sixth embodiment of the present application, which indicates that light of different wavelengths deviates from the convergent focus after passing through the lens. Fig.28 FIG. 4 is an astigmatism curve of the optical imaging lens in the sixth embodiment of the present application, which represents the meridional image curvature and the sagittal image curvature. Fig.29 FIG. 4 is a distortion curve of the optical imaging lens in the sixth embodiment of the present application, which indicates the distortion magnitude values ​​corresponding to different image heights. Fig.30 FIG. 2 is a magnification chromatic aberration curve of the optical imaging lens in the sixth embodiment of the present application, which indicates the deviation of different image heights on the imaging surface after the light passes through the lens. Figures 27 to 30 It can be seen that the optical imaging lens provided in the sixth embodiment of the present application can achieve good imaging quality.

[0215] Embodiment 7

[0216] Fig.31 FIG. 1 is a schematic diagram of the structure of an optical imaging lens according to a seventh embodiment of the present application. Fig.31 As shown, the camera lens assembly includes, from the object side to the image side, 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, an eighth lens E8, a ninth lens E9, a filter E10 and an imaging surface S21.

[0217] Among them, the first lens E1 has positive focal power, its object side surface S1 is convex, and the image side surface S2 is concave; the second lens E2 has positive focal power, its object side surface S3 is convex, and the image side surface S4 is concave; the third lens E3 has negative focal power, its object side surface S5 is convex, and the image side surface S6 is concave; the fourth lens E4 has positive focal power, its object side surface S7 is convex, and the image side surface S8 is convex; the fifth lens E5 has positive focal power, its object side surface S9 is convex, and the image side surface S10 is a convex surface; the sixth lens has negative power, its object side surface S11 is a concave surface, and the image side surface S12 is a convex surface; the seventh lens has positive power, its object side surface S13 is a convex surface, and the image side surface S14 is a concave surface; the eighth lens has positive power, its object side surface S15 is a concave surface, and the image side surface S16 is a convex surface; the ninth lens has negative power, its object side surface S17 is a concave surface, and the image side surface S18 is a concave surface; the filter E10 has an object side surface S19 and an image side surface S20. The light from the object passes through each surface S1 to S20 in sequence and is finally imaged on the imaging surface S21.

[0218] In the seventh embodiment of the present application, the parameters of each relational expression are the same as those explained in the first embodiment, but the values ​​of each relational expression are listed in the following Table 18.

[0219]

[0220] Table 18

[0221] Table 19 shows basic parameters of the optical imaging lens of the seventh embodiment of the present application, wherein the radius of curvature, thickness, and distance are all in millimeters.

[0222]

[0223]

[0224] Table 19

[0225] Table 20 below gives the high-order coefficients A4, A6, A8, A10, A12 and A14 of each aspheric surface S1-S18 that can be used for each aspheric lens in the seventh embodiment of the present application.

[0226]

[0227] Table 20

[0228] Fig.32 FIG. 1 is an axial chromatic aberration curve of the optical imaging lens in the seventh embodiment of the present application, which indicates the deviation of the convergent focus of light of different wavelengths after passing through the lens. Fig.33 FIG. 4 shows the astigmatism curve of the optical imaging lens in the seventh embodiment of the present application, which represents the meridional image curvature and the sagittal image curvature. Fig.34FIG. 4 is a distortion curve of the optical imaging lens in the seventh embodiment of the present application, which indicates the distortion magnitude values ​​corresponding to different image heights. Fig.35 FIG. 2 is a magnification chromatic aberration curve of the optical imaging lens in the seventh embodiment of the present application, which indicates the deviation of different image heights on the imaging surface after the light passes through the lens. Figure 32 to Figure 35 It can be seen that the optical imaging lens provided in the seventh embodiment of the present application can achieve good imaging quality.

[0229] In summary, in Examples 1-7 of the present application, each conditional formula satisfies the conditions of Table 21 below:

[0230] Conditional / Example 1 2 3 4 5 6 7 TTL / ImgH 1.25 1.22 1.20 1.18 1.17 1.13 1.09 <![CDATA[ImgH 2 / TTL(mm)]]> 4.80 4.90 5.00 5.07 5.14 5.58 5.97 f1 / f 1.86 1.96 2.02 2.10 2.16 2.20 2.37 f / f2 0.05 0.08 0.09 0.11 0.13 0.13 0.13 FOV(°) 93.5 95.2 96.0 96.6 97.1 98.8 100.7 (R15+R16) / (R13+R14) -0.53 -0.62 -0.73 -0.81 -0.86 -0.80 -0.96 f5 / (f7+f8) 0.82 0.85 0.86 0.88 0.91 0.91 0.91 DT22 / ET9 1.02 1.10 1.13 1.12 1.11 0.95 0.92 SAG61 / SAG62 2.27 2.22 2.18 2.08 2.06 1.72 1.56 (T67+T78) / T89 1.24 1.16 1.11 1.06 1.03 1.06 1.07 f6 / f9 3.03 2.98 2.93 2.88 2.88 2.89 3.03 CT7 / ET7 2.40 2.43 2.32 2.20 2.12 1.77 1.67

[0231] Table 21

[0232] 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: The optical imaging lens has nine lenses, which are as follows from the object side to the image side: A first lens having positive refractive power, with a convex surface on the object side and a concave surface on the image side; A second lens having positive refractive power, with a convex surface on the object side and a concave surface on the image side; The third lens has a negative optical power and a convex surface on the object side and a concave surface on the image side; a fourth lens element having positive refractive power and a convex object side surface; A fifth lens having positive refractive power, with a convex object side surface and a convex image side surface; A sixth lens having negative optical power, with a concave object side surface and a convex image side surface; The seventh lens has positive refractive power and has a convex object side surface and a concave image side surface; An eighth lens having positive refractive power, with a concave object side surface and a convex image side surface; The ninth lens element has negative power and has a concave object side surface and a concave image side surface; Among them, each lens is independent of each other and has an air gap on the optical axis; The on-axis distance TTL from the object side surface to the image surface of the first lens and the maximum half image height ImgH satisfy the following: 1.09≤TTL / ImgH≤1.

25.

2. The optical imaging lens according to claim 1, wherein: The on-axis distance TTL from the object side to the image plane of the first lens and the maximum half image height ImgH satisfy: 4.8mm≤ImgH 2 / TTL≤5.97mm。 3. The optical imaging lens according to claim 1, wherein: The effective focal length f1 of the first lens and the effective focal length f of the optical imaging lens satisfy the following: 1.86≤f1 / f≤2.

37.

4. The optical imaging lens according to claim 1, wherein: The effective focal length f of the optical imaging lens and the effective focal length f2 of the second lens satisfy the following: 0.05≤f / f2≤0.

13.

5. The optical imaging lens according to claim 1, wherein: The maximum field of view FOV of the optical imaging lens satisfies: 93.5°≤FOV≤100.7°.

6. The optical imaging lens according to claim 1, wherein: The curvature radius R15 of the object side surface of the eighth lens, the curvature radius R16 of the image side surface of the eighth 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: -0.96≤(R15+R16) / (R13+R14)≤-0.

53.

7. The optical imaging lens according to claim 1, wherein: The effective focal length f5 of the fifth lens, the effective focal length f7 of the seventh lens and the effective focal length f8 of the eighth lens satisfy: 0.82≤f5 / (f7+f8)≤0.

91.

8. The optical imaging lens according to claim 1, wherein: The effective half-aperture DT22 of the image side of the second lens and the edge thickness ET9 of the ninth lens satisfy: 0.92≤DT22 / ET9≤1.

13.

9. The optical imaging lens according to claim 1, wherein: An on-axis distance SAG61 between the intersection of the object side surface of the sixth lens and the optical axis to the effective radius vertex of the object side surface of the sixth lens and an on-axis distance SAG62 between the intersection of the image side surface of the sixth lens and the optical axis to the effective radius vertex of the image side surface of the sixth lens satisfy the following: 1.56≤SAG61 / SAG62≤2.

27.

10. The optical imaging lens according to claim 1, wherein: An air interval T67 between the sixth lens and the seventh lens on the optical axis, an air interval T78 between the seventh lens and the eighth lens on the optical axis, and an air interval T89 between the eighth lens and the ninth lens on the optical axis satisfy the following conditions: 1.03≤(T67+T78) / T89≤1.

24.

11. The optical imaging lens according to claim 1, wherein: The effective focal length f6 of the sixth lens and the effective focal length f9 of the ninth lens satisfy the following: 2.88≤f6 / f9≤3.

03.

12. The optical imaging lens according to claim 1, wherein: A central thickness CT7 of the seventh lens on the optical axis and an edge thickness ET7 of the seventh lens satisfy the following: 1.67≤CT7 / ET7≤2.43.

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