Optical imaging lens

Abstract

The present application discloses an optical imaging lens, which sequentially includes, from the object side to the image side along the optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens; the first lens has a positive optical power, and the seventh lens has a positive optical power; wherein, the maximum semi-field angle Semi-FOV of the optical imaging lens and the total effective focal length f of the optical imaging lens satisfy f×tan(Semi-FOV) > 4.5 mm; the radius of curvature R13 of the object side surface of the seventh lens, the radius of curvature R15 of the object side surface of the eighth lens, and the distance T78 between the seventh lens and the eighth lens on the optical axis satisfy -7.0 < (R13 + R15) / T78 < -3.0; and the combined focal length f12 of the first lens and the second lens and the effective focal length f3 of the third lens satisfy 2.0 < f3 / f12 < 6.0.

Description

Technical Field

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

[0002] In recent years, with the development of science and technology, the market demand for optical imaging lenses applicable to portable electronic products has gradually increased. Portable electronic products, such as mobile phones, tablet computers, etc., are expected to have a smaller volume or a thinner thickness.

[0003] A camera module is usually provided on a portable device such as a mobile phone to enable the mobile phone to have a camera function. The camera module usually includes an image sensor of a Charge-coupled Device (CCD) type or a Complementary Metal Oxide Semiconductor (CMOS) type, and an optical imaging lens is provided. The optical imaging lens can converge the light on the object side, and the imaging light travels along the optical path of the optical imaging lens and irradiates onto the image sensor, and then the image sensor converts the optical signal into an electrical signal to form image data. With the continuous improvement of semiconductor process technology, the performance of the image sensor has been continuously improved. As a result, the imaging quality of the optical imaging lens has also had to develop towards high-quality imaging.

[0004] Generally, in order to meet higher imaging quality, it is necessary to increase the number of lenses in the optical lens, which often makes the lens size larger.

[0005] In order to meet the miniaturization requirements and meet the imaging requirements, an optical imaging lens capable of achieving at least one of the effects of ultra-thin, extra-large image plane, large aperture, and good imaging quality is needed. Summary of the Invention

[0006] The present application provides an optical imaging lens applicable to portable electronic products, which can at least solve or partially solve the above-mentioned at least one disadvantage in the prior art.

[0007] The present application provides an optical imaging lens, which sequentially includes, from the object side to the image side along the optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens; the first lens may have a positive optical power, and the seventh lens may have a positive optical power; wherein, the maximum semi-field angle Semi-FOV of the optical imaging lens and the total effective focal length f of the optical imaging lens may satisfy f×tan(Semi-FOV) > 4.5 mm; the radius of curvature R13 of the object side surface of the seventh lens, the radius of curvature R15 of the object side surface of the eighth lens, and the distance T78 between the seventh lens and the eighth lens on the optical axis may satisfy -7.0 < (R13 + R15) / T78 < -3.0; and the combined focal length f12 of the first lens and the second lens and the effective focal length f3 of the third lens may satisfy 2.0 < f3 / f12 < 6.0.

[0008] In one embodiment, at least one of the object side surface of the first lens to the image side surface of the eighth lens has an aspherical mirror surface.

[0009] In one embodiment, the maximum semi-field angle Semi-FOV of the optical imaging lens and the total effective focal length f of the optical imaging lens may satisfy 4.5 mm < f×tan(Semi-FOV) < 6.0 mm.

[0010] In one embodiment, the radius of curvature R13 of the object side surface of the seventh lens, the radius of curvature R15 of the object side surface of the eighth lens, and the distance T78 between the seventh lens and the eighth lens on the optical axis may satisfy -6.5 < (R13 + R15) / T78 < -3.5.

[0011] In one embodiment, the total effective focal length f of the optical imaging lens and the effective focal length f7 of the seventh lens may satisfy 0.5 ≤ f / f7 ≤ 1.0.

[0012] In one embodiment, the total effective focal length f of the optical imaging lens and the effective focal length f8 of the eighth lens may satisfy -1.5 < f / f8 < -1.0.

[0013] In one 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 3.0 < |f2| / (R3 - R4) < 8.0.

[0014] In one embodiment, the effective focal length f1 of the first lens and the radius of curvature R1 of the object side surface of the first lens may satisfy 2.0 < f1 / R1 < 2.5.

[0015] In one embodiment, the effective focal length f3 of the third lens and the radius of curvature R6 of the image side surface of the third lens may satisfy 1.0 ≤ f3 / R6 ≤ 5.0.

[0016] In one embodiment, the total effective focal length f of the optical imaging lens and the radius of curvature R11 of the object side surface of the sixth lens may satisfy -1.0 < f / R11 < 0.

[0017] In one embodiment, the radius of curvature R7 of the object side surface of the fourth lens and the radius of curvature R5 of the object side surface of the third lens may satisfy -6.0 < R7 / R5 < -2.0.

[0018] In one embodiment, the object side surface of the fourth lens may be a concave surface; the radius of curvature R7 of the object side surface of the fourth lens and the radius of curvature R11 of the object side surface of the sixth lens may satisfy 0 < R11 / R7 < 2.0.

[0019] In one embodiment, the central thickness CT2 of the second lens and the axial interval distance T23 between the second lens and the third lens may satisfy 0.9 ≤ CT2 / T23 ≤ 1.5.

[0020] In one embodiment, the central thickness CT6 of the sixth lens on the optical axis, the central thickness CT7 of the seventh lens on the optical axis, and the central thickness CT8 of the eighth lens on the optical axis may satisfy 0.5 mm < (CT6 + CT7 + CT8) / 3 < 0.7 mm.

[0021] In one embodiment, the central thickness CT3 of the third lens on the optical axis, the central thickness CT4 of the fourth lens on the optical axis, the central thickness CT5 of the fifth lens on the optical axis, and the axial interval distance T56 between the fifth lens and the sixth lens may satisfy 2.0 < (CT3 + CT4 + CT5) / T56 < 3.5.

[0022] In one embodiment, the Abbe number V4 of the fourth lens and the Abbe number V6 of the sixth lens may satisfy |V4 - V6| < 15.

[0023] In one embodiment, the Abbe number V5 of the fifth lens may satisfy 15 < V5 < 30.

[0024] In one embodiment, the sum ∑CT of the central thicknesses of each lens of the first lens to the eighth lens on the optical axis and the sum ∑AT of the axial interval distances between any two adjacent lenses of the first lens to the eighth lens on the optical axis may satisfy 1.4 ≤ ∑CT / ∑AT ≤ 2.0.

[0025] In one embodiment, the distance TTL on the optical axis from the object side surface of the first lens to the imaging surface of the optical imaging lens and half of the diagonal length ImgH of the effective pixel region on the imaging surface of the optical imaging lens may satisfy TTL / ImgH < 1.5.

[0026] Another aspect of the present application provides an optical imaging lens, which sequentially includes, from the object side to the image side along the optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens; the first lens may have a positive optical power, and the seventh lens may have a positive optical power; wherein, the maximum semi-field angle Semi-FOV of the optical imaging lens and the total effective focal length f of the optical imaging lens may satisfy f×tan(Semi-FOV)>4.5mm; the curvature radius R13 of the object side surface of the seventh lens, the curvature radius R15 of the object side surface of the eighth lens, and the distance T78 between the seventh lens and the eighth lens on the optical axis may satisfy -7.0<(R13+R15) / T78<-3.0; and the central thickness CT2 of the second lens and the distance T23 between the second lens and the third lens on the optical axis may satisfy 0.9≤CT2 / T23≤1.5.

[0027] In one embodiment, the maximum semi-field angle Semi-FOV of the optical imaging lens and the total effective focal length f of the optical imaging lens may satisfy 4.5mm<f×tan(Semi-FOV)<6.0mm.

[0028] In one embodiment, the curvature radius R13 of the object side surface of the seventh lens, the curvature radius R15 of the object side surface of the eighth lens, and the distance T78 between the seventh lens and the eighth lens on the optical axis may satisfy -6.5<(R13+R15) / T78<-3.5.

[0029] In one embodiment, the total effective focal length f of the optical imaging lens and the effective focal length f7 of the seventh lens may satisfy 0.5≤f / f7≤1.0.

[0030] In one embodiment, the total effective focal length f of the optical imaging lens and the effective focal length f8 of the eighth lens may satisfy -1.5<f / f8<-1.0.

[0031] 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 3.0<|f2| / (R3-R4)<8.0.

[0032] In one embodiment, the effective focal length f1 of the first lens and the curvature radius R1 of the object side surface of the first lens may satisfy 2.0<f1 / R1<2.5.

[0033] In one embodiment, the effective focal length f3 of the third lens and the curvature radius R6 of the image side surface of the third lens may satisfy 1.0≤f3 / R6≤5.0.

[0034] In one embodiment, the total effective focal length f of the optical imaging lens and the radius of curvature R11 of the object side surface of the sixth lens may satisfy -1.0 < f / R11 < 0.

[0035] In one embodiment, the radius of curvature R7 of the object side surface of the fourth lens and the radius of curvature R5 of the object side surface of the third lens may satisfy -6.0 < R7 / R5 < -2.0.

[0036] In one embodiment, the combined focal length f12 of the first lens and the second lens and the effective focal length f3 of the third lens may satisfy 2.0 < f3 / f12 < 6.0.

[0037] In one embodiment, the object side surface of the fourth lens may be concave; the radius of curvature R7 of the object side surface of the fourth lens and the radius of curvature R11 of the object side surface of the sixth lens may satisfy 0 < R11 / R7 < 2.0.

[0038] In one embodiment, the central thickness CT6 of the sixth lens on the optical axis, the central thickness CT7 of the seventh lens on the optical axis, and the central thickness CT8 of the eighth lens on the optical axis may satisfy 0.5 mm < (CT6 + CT7 + CT8) / 3 < 0.7 mm.

[0039] In one embodiment, the central thickness CT3 of the third lens on the optical axis, the central thickness CT4 of the fourth lens on the optical axis, the central thickness CT5 of the fifth lens on the optical axis, and the distance T56 between the fifth lens and the sixth lens on the optical axis may satisfy 2.0 < (CT3 + CT4 + CT5) / T56 < 3.5.

[0040] In one embodiment, the Abbe number V4 of the fourth lens and the Abbe number V6 of the sixth lens may satisfy |V4 - V6| < 15.

[0041] In one embodiment, the Abbe number V5 of the fifth lens may satisfy 15 < V5 < 30.

[0042] In one embodiment, the sum ∑CT of the central thicknesses of each lens of the first lens to the eighth lens on the optical axis and the sum ∑AT of the distances between any two adjacent lenses of the first lens to the eighth lens on the optical axis may satisfy 1.4 ≤ ∑CT / ∑AT ≤ 2.0.

[0043] In one embodiment, the distance TTL on the optical axis from the object side surface of the first lens to the imaging surface of the optical imaging lens and half of the diagonal length ImgH of the effective pixel region on the imaging surface of the optical imaging lens may satisfy TTL / ImgH < 1.5.

[0044] This application uses eight lenses. By reasonably distributing the optical power, surface shape, central thickness of each lens, and the on-axis spacing between each lens, etc., the above optical imaging lens has at least one beneficial effect such as being ultra-thin, having an ultra-large image plane, a large aperture, and good imaging quality. Description of the Drawings

[0045] Combined with the drawings, through the following detailed description of non-limiting embodiments, other features, objectives, and advantages of this application will become more obvious. In the drawings:

[0046] Figure 1 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 1 of this application; Figures 2A to 2D Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Embodiment 1;

[0047] Figure 3 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 2 of this application; Figures 4A to 4D Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Embodiment 2;

[0048] Figure 5 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 3 of this application; Figures 6A to 6D Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Embodiment 3;

[0049] Figure 7 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 4 of this application; Figures 8A to 8D Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Embodiment 4;

[0050] Figure 9 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 5 of this application; Figures 10A to 10D Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Embodiment 5;

[0051] Figure 11 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 6 of this application; Figures 12A to 12D Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Embodiment 6;

[0052] Figure 13 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 7 of this application; Figures 14A to 14DThe axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens according to Embodiment 7 are respectively shown;

[0053] Figure 15 The structural schematic diagram of the optical imaging lens according to Embodiment 8 of the present application is shown; Figures 16A to 16D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens according to Embodiment 8 are respectively shown. Detailed implementation manners

[0054] To better understand the present application, more detailed descriptions of various aspects of the present application will be made 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 do not 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.

[0055] It should be noted that in this specification, the expressions such as first, second, and third are only used to distinguish one feature from another feature and do not represent any limitation on the features. Therefore, without departing from the teachings of the present application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0056] In the accompanying drawings, for ease of illustration, the thickness, size, and shape of the lens have been slightly exaggerated. Specifically, the spherical or aspherical shapes shown in the drawings are shown by way of example. That is, the spherical or aspherical shapes are not limited to the spherical or aspherical shapes shown in the drawings. The drawings are only examples and are not drawn strictly to scale.

[0057] 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 to be photographed is called the object side surface of the lens, and the surface of each lens closest to the imaging surface is called the image side surface of the lens.

[0058] It should also be understood that the terms "comprise", "comprises", "include", "includes", "have", "has", "contain" and / or "contains", when used in this specification, denote the presence of the stated features, elements and / or components, but do not preclude the presence or addition of one or more other features, elements, components and / or combinations thereof. In addition, when an expression such as "at least one of..." appears after a list of listed features, it modifies the entire listed features, rather than individual elements in the list. In addition, when describing embodiments of the present application, the use of "may" means "one or more embodiments of the present application". Also, the term "exemplary" is intended to refer to an example or illustration.

[0059] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It should also be understood that terms (such as those defined in a common dictionary) should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0060] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0061] The features, principles and other aspects of the present application will be described in detail below.

[0062] The optical imaging lens according to an exemplary embodiment of the present application may include, for example, eight lenses having optical powers, namely, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens. These eight lenses are arranged in order from the object side to the image side along the optical axis. An air gap may be provided between any two adjacent lenses among the first lens to the eighth lens.

[0063] In the exemplary embodiment, the first lens may have a positive optical power; the second lens has a positive optical power or a negative optical power; the third lens has a positive optical power or a negative optical power; the fourth lens has a positive optical power or a negative optical power; the fifth lens has a positive optical power or a negative optical power; the sixth lens has a positive optical power or a negative optical power; the seventh lens may have a positive optical power; the eighth lens has a positive optical power or a negative optical power. By reasonably controlling the positive and negative distribution of the optical powers of the respective components of the lens, the low-order aberrations of the lens can be effectively balanced and controlled.

[0064] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula f×tan(Semi-FOV) > 4.5 mm, where Semi-FOV is the maximum half field of view angle of the optical imaging lens, and f is the total effective focal length of the optical imaging lens. By satisfying f×tan(Semi-FOV) > 4.5 mm, it helps to reasonably set the total effective focal length and the field of view angle of the optical imaging lens, can effectively compress the size of the optical imaging lens, makes the light deflection angle small, and in addition, helps the optical imaging lens to achieve a large image plane and makes it easy to injection mold each lens.

[0065] Exemplarily, the optical imaging lens of the present application can satisfy the conditional formula 4.5 mm < f×tan(Semi-FOV) < 6.0 mm. By satisfying 4.5 mm < f×tan(Semi-FOV) < 6.0 mm, it helps to further reasonably distribute the effective focal length and the field of view angle of the optical imaging lens, can effectively compress the size of the optical imaging lens, makes the light deflection angle small, and in addition, helps the optical imaging lens to achieve a large image plane and makes it easy to injection mold each lens.

[0066] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula -7.0 < (R13 + R15) / T78 < -3.0, where R13 is the curvature radius of the object side of the seventh lens, R15 is the curvature radius of the object side of the eighth lens, and T78 is the axial distance between the seventh lens and the eighth lens. By restricting the ratio of the sum of the curvature radii of the object sides of the seventh lens and the eighth lens to the air gap between the seventh lens and the eighth lens on the optical axis within this range, it helps to control the field curvature contribution of each field of view of the optical imaging lens within a reasonable range.

[0067] Exemplarily, the optical imaging lens of the present application can satisfy the conditional formula -6.5 < (R13 + R15) / T78 < -3.5. By satisfying -6.5 < (R13 + R15) / T78 < -3.5, it helps to control the field curvature contribution of each field of view of the optical imaging lens within a better range.

[0068] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 2.0 < f3 / f12 < 6.0, where f12 is the combined focal length of the first lens and the second lens, and f3 is the effective focal length of the third lens. By reasonably controlling the ratio of the effective focal length of the third lens to the combined focal length after combining the first lens and the second lens within this range, the spherical aberration generated by the third lens can be constrained within a reasonable interval, so that the spherical aberration generated by the light at the first three lenses can be quickly canceled and balanced, so as to obtain good imaging quality for the on-axis field of view and the fields of view near it. More specifically, f12 and f3 can satisfy 2.15 < f3 / f12 < 5.80.

[0069] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional expression 0.5 ≤ f / f7 ≤ 1.0, where f is the total effective focal length of the optical imaging lens, and f7 is the effective focal length of the seventh lens. By satisfying 0.5 ≤ f / f7 ≤ 1.0, the focal length range of the seventh lens can be controlled, the contribution range of its optical power can be reasonably controlled, and at the same time, the contribution rate of its secondary spherical aberration can be reasonably controlled. Furthermore, the optical power of the seventh lens can be reasonably balanced with the negative optical power generated by the negative components in the optical imaging lens.

[0070] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional expression -1.5 < f / f8 < -1.0, where f is the total effective focal length of the optical imaging lens, and f8 is the effective focal length of the eighth lens. By satisfying -1.5 < f / f8 < -1.0, the focal length range of the eighth lens can be controlled, the contribution range of its optical power can be reasonably controlled, and at the same time, the contribution rate of its secondary spherical aberration can be reasonably controlled. Furthermore, the optical power of the eighth lens can be reasonably balanced with the positive optical power generated by the positive components in the optical imaging lens. More specifically, f and f8 can satisfy -1.30 < f / f8 < -1.15.

[0071] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional expression 3.0 < |f2| / (R3 - R4) < 8.0, where f2 is the effective focal length of the second lens, R3 is the curvature radius of the object side surface of the second lens, and R4 is the curvature radius of the image side surface of the second lens. Satisfying the conditional expression 3.0 < |f2| / (R3 - R4) < 8.0 is beneficial to controlling the curvature radii of the two mirror surfaces of the second lens within a reasonable range, and then being able to control the astigmatism and spherical aberration of the second lens within a reasonable range, and further being able to balance the astigmatism and spherical aberration generated by the remaining lenses, so that the optical imaging lens has good imaging quality. More specifically, f2, R3, and R4 can satisfy 3.30 < |f2| / (R3 - R4) < 7.70.

[0072] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional expression 2.0 < f1 / R1 < 2.5, where f1 is the effective focal length of the first lens, and R1 is the curvature radius of the object side surface of the first lens. By reasonably controlling the ratio of the effective focal length of the first lens to the curvature radius of its object side surface within this range, the deflection angle of the marginal field of view in the first lens can be controlled, and the sensitivity of the optical imaging lens can be effectively reduced. More specifically, f1 and R1 can satisfy 2.05 < f1 / R1 < 2.30.

[0073] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 1.0 ≤ f3 / R6 ≤ 5.0, where f3 is the effective focal length of the third lens and R6 is the radius of curvature of the image side surface of the third lens. By constraining the ratio of the effective focal length of the third lens to the radius of curvature of the image side surface of the third lens within this range, the contribution of the third lens to the fifth-order spherical aberration of the optical imaging lens can be well controlled, and further, the third-order spherical aberration generated by the optical imaging lens can be compensated, so that the optical imaging lens has good imaging quality on the axis.

[0074] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula -1.0 < f / R11 < 0, where f is the total effective focal length of the optical imaging lens and R11 is the radius of curvature of the object side surface of the sixth lens. By controlling the ratio of the total effective focal length to the radius of curvature of the object side surface of the sixth lens within this range, the optical imaging lens can have a high aberration correction ability while maintaining miniaturization, and the optical imaging lens can obtain better processability. More specifically, f and R11 may satisfy -0.7 < f / R11 < -0.20.

[0075] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula -6.0 < R7 / R5 < -2.0, where R7 is the radius of curvature of the object side surface of the fourth lens and R5 is the radius of curvature of the object side surface of the third lens. By satisfying the conditional formula -6.0 < R7 / R5 < -2.0 to control the contribution rates of coma of the third lens and the fourth lens within a reasonable range, the coma generated by each component of the optical imaging lens can be well balanced, and further, the optical imaging lens can obtain good imaging quality. More specifically, R7 and R5 may satisfy -5.50 < R7 / R5 < -2.10.

[0076] In an exemplary embodiment, the object side surface of the fourth lens may be concave. The fourth lens with a concave object side surface helps to reduce aberration, and further improve the image quality of the optical imaging lens.

[0077] Exemplarily, the optical imaging lens of the present application may satisfy the conditional formula 0 < R11 / R7 < 2.0, where R7 is the radius of curvature of the object side surface of the fourth lens and R11 is the radius of curvature of the object side surface of the sixth lens. By controlling the ratio of the radius of curvature of the object side surface of the sixth lens to the radius of curvature of the object side surface of the fourth lens, it helps to improve the image quality of the optical imaging lens. More specifically, R7 and R11 may satisfy 0.20 < R11 / R7 < 0.70.

[0078] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 0.9 ≤ CT2 / T23 ≤ 1.5, where CT2 is the central thickness of the second lens and T23 is the axial distance between the second lens and the third lens. Satisfying 0.9 ≤ CT2 / T23 ≤ 1.5 can reasonably adjust the air gap between the second lens and the third lens and the central thickness of the second lens, thereby effectively reducing the risk of ghost images generated at the second lens and the third lens, and will help to compress the size of the optical imaging lens.

[0079] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 0.5 mm < (CT6 + CT7 + CT8) / 3 < 0.7 mm, where CT6 is the central thickness of the sixth lens on the optical axis, CT7 is the central thickness of the seventh lens on the optical axis, and CT8 is the central thickness of the eighth lens on the optical axis. Satisfying 0.5 mm < (CT6 + CT7 + CT8) / 3 < 0.7 mm can make the optical imaging lens have a smaller size, enabling the lenses of the optical imaging lens to be better assembled into the lens barrel and match with other mechanisms to be assembled.

[0080] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 2.0 < (CT3 + CT4 + CT5) / T56 < 3.5, where CT3 is the central thickness of the third lens on the optical axis, CT4 is the central thickness of the fourth lens on the optical axis, CT5 is the central thickness of the fifth lens on the optical axis, and T56 is the axial distance between the fifth lens and the sixth lens. By controlling the ratio of the sum of the central thicknesses of the third lens, the fourth lens, and the fifth lens to the air gap between the fifth lens and the sixth lens on the optical axis to be between 2 and 3.5, the body height of the optical imaging lens can be satisfied, and in the actual processing and assembly of the lenses, the lenses are more conducive to processing and assembly. In addition, the sensitivity of the optical imaging lens to field curvature is reduced. More specifically, CT3, CT4, CT5, and T56 can satisfy 2.15 < (CT3 + CT4 + CT5) / T56 < 3.10.

[0081] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula |V4 - V6| < 15, where V4 is the Abbe number of the fourth lens and V6 is the Abbe number of the sixth lens. By selecting materials for the fourth lens and the sixth lens located in the middle of the optical imaging lens to have a large difference in Abbe numbers, the lateral chromatic aberration, axial chromatic aberration, and chromatic spherical aberration of the optical imaging lens can be strongly corrected, thus providing a better guarantee for the image quality of the optical imaging lens.

[0082] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 15 < V5 < 30, where V5 is the Abbe number of the fifth lens. By controlling the Abbe number of the fifth lens located in the middle of the optical imaging lens to be between 15 and 30, the Abbe number of this lens is made smaller, and thus the fifth lens has a smaller chromatic dispersion ability, so as to ensure that the optical imaging lens has better chromatic aberration and higher image quality. Exemplarily, V5 can satisfy 15 < V5 < 26.5.

[0083] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 1.4 ≤ ∑CT / ∑AT ≤ 2.0, where ∑CT is the sum of the central thicknesses of each lens on the optical axis from the first lens to the eighth lens, and ∑AT is the sum of the axial distances between any two adjacent lenses from the first lens to the eighth lens. Exemplarily, ∑CT = CT1 + CT2 + CT3 + CT4 + CT5 + CT6 + CT7 + CT8, and ∑AT = T12 + T23 + T34 + T45 + T56 + T67 + T78. Here, CT1 is the central thickness of the first lens on the optical axis, CT2 is the central thickness of the second lens on the optical axis, and CT3 to CT8 are the same (refer to the previous definition), T12 is the axial distance between the first lens and the second lens, T23 is the axial distance between the second lens and the third lens, and T34 to T78 are the same. By restricting the ratio of the sum of the central thicknesses of each lens on the optical axis from the first lens to the eighth lens to the sum of the axial air gaps between any two adjacent lenses from the first lens to the eighth lens within this range, the distortion of the optical imaging lens can be reasonably controlled, so that the optical imaging lens has good distortion performance. More specifically, ∑CT and ∑AT can satisfy 1.41 ≤ ∑CT / ∑AT ≤ 1.95.

[0084] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula TTL / ImgH < 1.5, where TTL is the distance from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis, and ImgH is half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens. By restricting the ratio of the total optical length of the optical imaging lens to the half image height within this range, the optical imaging lens can be made ultra-thin.

[0085] In an exemplary embodiment, the above optical imaging lens may further include at least one aperture stop. The aperture stop can be set at an appropriate position as needed, for example, 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.

[0086] The optical imaging lens according to the above embodiments of the present application may employ multiple lenses, such as the eight lenses described above. By reasonably distributing the optical power, surface shape, central thickness of each lens, and the axial spacing between each lens, etc., the volume of the optical imaging lens can be effectively reduced, the length of the optical imaging lens can be compressed, the sensitivity of the optical imaging lens can be reduced, and the processability of the optical imaging lens can be improved, making the optical imaging lens more conducive to production and processing and applicable to portable electronic products. At the same time, the optical imaging lens of the present application also has excellent performance such as an ultra-large image plane, a large aperture, and good imaging quality.

[0087] In the embodiments of the present application, at least one of the mirror surfaces of each lens is an aspherical mirror surface, that is, at least one of the object side surface of the first lens to the image side surface of the eighth lens is an aspherical mirror surface. The characteristics of an aspherical lens are that the curvature changes continuously from the center of the lens to the periphery of the lens. Different from a spherical lens with a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has better curvature radius characteristics and has the advantages of improving distortion aberration and astigmatism aberration. After using an aspherical lens, it is possible to eliminate the aberration that appears during imaging as much as possible, thereby improving the imaging quality. Optionally, at least one of the object side surface and the image side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, and the eighth lens is an aspherical mirror surface. Optionally, both the object side surface and the image side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, and the eighth lens are aspherical mirror surfaces.

[0088] However, those skilled in the art should understand that without departing from the technical solutions 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 eight lenses are described as an example in the embodiments, the optical imaging lens is not limited to including eight lenses. If necessary, the optical imaging lens may also include other numbers of lenses.

[0089] The following further describes specific embodiments of the optical imaging lens applicable to the above embodiments with reference to the accompanying drawings.

[0090] Example 1

[0091] The following refers to Figures 1 to 2D Describe the optical imaging lens according to Embodiment 1 of the present application. Figure 1 The structural schematic diagram of the optical imaging lens according to Embodiment 1 of the present application is shown.

[0092] As Figure 1As shown in the figure, the optical imaging lens sequentially includes, from the object side to the image side along the optical axis: a diaphragm 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, and a filter E9.

[0093] The first lens E1 has a positive focal power, its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has a negative focal power, its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has a positive focal power, its object side surface S5 is convex, and its image side surface S6 is concave. The fourth lens E4 has a negative focal power, its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has a negative focal power, its object side surface S9 is concave, and its image side surface S10 is concave. The sixth lens E6 has a negative focal power, its object side surface S11 is concave, and its image side surface S12 is concave. The seventh lens E7 has a positive focal power, its object side surface S13 is convex, and its image side surface S14 is concave. The eighth lens E8 has a negative focal power, its object side surface S15 is concave, and its image side surface S16 is concave. The filter E9 has an object side surface S17 and an image side surface S18. The optical imaging lens has an imaging surface S19, and light from the object sequentially passes through the surfaces S1 to S18 and finally forms an image on the imaging surface S19.

[0094] Table 1 shows the basic parameter table of the optical imaging lens of Embodiment 1, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm).

[0095]

[0096] Table 1

[0097] In Embodiment 1, the value of the total effective focal length f of the optical imaging lens is 6.65 mm, the value of the on-axis distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S19 is 7.50 mm, and the value of the maximum field of view FOV is 75.9°.

[0098] In Embodiment 1, the object side surface and the image side surface of any one of the first lens E1 to the eighth lens E8 are both aspherical surfaces, and the surface profile x of each aspherical lens can be defined by, but not limited to, the following aspherical formula:

[0099]

[0100] Wherein, x is the sagitta, which is the distance from the vertex of the aspherical surface to the position along the optical axis at a height of h; c is the paraxial curvature of the aspherical surface, c = 1 / R (i.e., the paraxial curvature c is the reciprocal of the radius of curvature R in Table 1 above); k is the conic coefficient; Ai is the correction coefficient of the i-th order of the aspherical surface. Table 2 below gives the higher-order coefficients A4, A6, A8, A 10 , A 12 , A 14 , A 16 , A 18 , A 20 , A 22 , A 24 , A 26 , A 28 and A 30 .

[0101] Face number A4 A6 A8 A10 A12 A14 A16 S1 -5.1450E-02 -1.5655E-02 -4.8143E-03 -1.2990E-03 -2.9574E-04 -4.5813E-05 -8.7823E-08 S2 -2.1916E-02 3.6927E-03 -2.1455E-03 4.8625E-04 -1.3779E-04 7.2045E-05 -6.1658E-06 S3 -5.0452E-02 1.9636E-02 -2.4038E-04 7.8345E-04 -2.2104E-05 9.6110E-05 9.9930E-06 S4 -1.3964E-02 1.2925E-02 1.6002E-03 1.2720E-04 -1.6023E-04 -4.0369E-05 -8.2132E-07 S5 1.3193E-02 1.2248E-02 4.3896E-03 6.8455E-04 -1.1774E-05 -1.3267E-05 4.3986E-06 S6 -6.0797E-03 3.8673E-03 1.5226E-03 2.8169E-04 2.4846E-05 3.8179E-06 8.7118E-07 S7 -1.3864E-01 -1.1082E-02 -6.3366E-04 -1.3575E-04 -3.1522E-05 -2.2276E-05 6.9815E-06 S8 -2.5263E-01 -5.8492E-03 4.0007E-03 1.9030E-03 1.0282E-03 4.1702E-04 2.3569E-04 S9 -3.2917E-01 -6.8960E-03 -2.9644E-03 -1.2326E-03 1.5252E-04 -5.5874E-05 1.1688E-04 S10 -3.6373E-01 1.7477E-02 2.0508E-03 -1.9558E-04 2.3243E-04 -5.3751E-04 1.4009E-05 S11 -3.9979E-01 -5.5054E-02 1.1077E-02 1.2473E-02 3.3233E-03 -1.2420E-04 -8.3914E-04 S12 -8.8298E-01 1.6789E-01 -2.7155E-02 2.5388E-02 -1.0169E-02 8.1120E-04 -9.6986E-04 S13 -3.2147E+00 4.8451E-01 5.7655E-03 2.9307E-02 -2.6167E-02 -4.2865E-03 8.8158E-04 S14 -2.1639E+00 2.3165E-01 6.0021E-02 -3.8194E-02 1.5639E-02 -7.0232E-03 2.4805E-03 S15 -8.8497E-02 6.6326E-01 -3.2422E-01 1.2660E-01 -3.2512E-02 -1.1251E-03 4.3821E-03 S16 -4.0695E+00 8.7159E-01 -2.3348E-01 1.6113E-01 -5.9436E-02 8.4335E-03 -9.1386E-03 Face number A18 A20 A22 A24 A26 A28 A30 S1 6.5259E-06 4.4798E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 9.6631E-06 -8.6419E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 5.8950E-06 -2.3391E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 6.1918E-06 1.9505E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 3.4211E-06 -3.5973E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 1.1305E-06 2.9103E-08 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 -1.4115E-06 2.3402E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S8 7.0372E-05 2.4844E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S9 3.2366E-05 2.3624E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S10 1.1137E-05 2.3651E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S11 -3.8353E-04 -7.2092E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S12 3.9656E-04 -9.7149E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S13 2.2915E-03 -4.8597E-04 -1.9045E-04 -2.3458E-04 0.0000E+00 0.0000E+00 0.0000E+00 S14 -7.1463E-04 -6.3886E-04 -7.9624E-04 -2.2746E-04 -5.2038E-05 0.0000E+00 0.0000E+00 S15 1.2432E-03 -4.4005E-03 4.1143E-03 -2.2245E-03 7.3895E-04 -1.2453E-04 -1.1187E-06 S16 5.9935E-03 -3.2774E-03 4.0344E-03 -1.6310E-03 8.0133E-04 -4.0233E-04 1.0067E-04

[0102] Table 2

[0103] Figure 2A shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 1, which represents the deviation of the converging focal points of light rays of different wavelengths after passing through the lens. Figure 2B shows the astigmatism curve of the optical imaging lens of Embodiment 1, which represents the curvature of the meridional image plane and the curvature of the sagittal image plane. Figure 2C shows the distortion curve of the optical imaging lens of Embodiment 1, which represents the distortion magnitude values corresponding to different image heights. Figure 2D shows the longitudinal chromatic aberration curve of the optical imaging lens of Embodiment 1, which represents the deviation of different image heights of light rays on the imaging plane after passing through the lens. According to Figures 2A to 2D it can be known that the optical imaging lens given in Embodiment 1 can achieve good imaging quality.

[0104] Example 2

[0105] The following will refer to Figures 3 to 4D to describe the optical imaging lens according to Embodiment 2 of the present application. In this embodiment and the following embodiments, for the sake of simplicity, some descriptions similar to those in Embodiment 1 will be omitted. Figure 3 shows a schematic structural diagram of the optical imaging lens according to Embodiment 2 of the present application.

[0106] As Figure 3 shown, the optical imaging lens sequentially includes, from the object side to the image side along the optical axis: a stop 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, and a filter E9.

[0107] The first lens E1 has a positive optical power, its object side S1 is convex, and its image side S2 is concave. The second lens E2 has a negative optical power, its object side S3 is convex, and its image side S4 is concave. The third lens E3 has a positive optical power, its object side S5 is convex, and its image side S6 is concave. The fourth lens E4 has a positive optical power, its object side S7 is concave, and its image side S8 is convex. The fifth lens E5 has a negative optical power, its object side S9 is concave, and its image side S10 is convex. The sixth lens E6 has a negative optical power, its object side S11 is concave, and its image side S12 is concave. The seventh lens E7 has a positive optical power, its object side S13 is convex, and its image side S14 is concave. The eighth lens E8 has a negative optical power, its object side S15 is concave, and its image side S16 is concave. The filter E9 has an object side S17 and an image side S18. The optical imaging lens has an imaging surface S19, and light from an object sequentially passes through the surfaces S1 to S18 and finally forms an image on the imaging surface S19.

[0108] In Embodiment 2, the value of the total effective focal length f of the optical imaging lens is 6.70 mm, the value of the on-axis distance TTL from the object side S1 of the first lens E1 to the imaging surface S19 is 7.80 mm, and the value of the maximum field of view FOV is 69.8°.

[0109] Table 3 shows the basic parameter table of the optical imaging lens of Embodiment 2, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm). Table 4 shows the high-order term coefficients of the aspherical mirrors that can be used in Embodiment 2, where each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0110]

[0111]

[0112] Table 3

[0113] Face number A4 A6 A8 A10 A12 A14 A16 S1 -1.5972E-02 -1.1003E-02 -3.7791E-03 -9.5689E-04 -1.6551E-04 4.4773E-06 1.1650E-05 S2 -2.8002E-02 -1.7809E-03 -1.4968E-03 4.3406E-04 -6.6878E-05 4.5603E-05 -1.3463E-05 S3 -4.8541E-02 1.6060E-02 2.6226E-04 5.4969E-04 -7.0986E-05 -1.0536E-05 -2.0840E-05 S4 -1.0201E-02 1.3200E-02 6.7614E-04 -1.9375E-04 -2.1229E-04 -1.2600E-04 -5.2475E-05 S5 7.7061E-03 1.4979E-02 4.1997E-03 9.5296E-04 2.3282E-04 4.9237E-05 7.5417E-06 S6 -2.2714E-02 2.3661E-03 9.7845E-04 2.2109E-04 9.0548E-05 3.6223E-05 1.5578E-05 S7 -1.8894E-01 -2.1304E-02 -2.9960E-03 -9.3596E-04 -2.6535E-04 -5.9218E-05 -8.9950E-06 S8 -2.7376E-01 -7.5224E-03 2.3517E-03 4.9805E-04 8.1624E-04 4.6338E-04 1.4835E-04 S9 -3.1598E-01 1.5780E-03 -1.9234E-03 -6.4013E-04 4.9620E-04 2.4523E-04 7.8162E-06 S10 -4.4856E-01 1.5260E-02 9.2307E-03 6.3712E-03 2.7419E-03 6.5986E-04 8.8178E-05 S11 -6.0474E-01 -6.6597E-02 4.1279E-02 2.0605E-02 3.3563E-03 -3.6525E-04 -1.6394E-03 S12 -1.2810E+00 2.8708E-01 -5.3473E-02 7.4830E-03 -1.7718E-02 5.3019E-03 -1.4120E-03 S13 -3.9808E+00 7.8982E-01 -1.3665E-03 -3.4418E-02 -1.5377E-02 1.1495E-02 -1.4691E-03 S14 -2.5112E+00 2.6831E-01 1.2036E-01 -5.9871E-02 3.7122E-02 -4.4226E-03 2.0540E-03 S15 5.6725E-02 6.7100E-01 -3.7245E-01 1.5509E-01 -5.1359E-02 4.3719E-03 2.2996E-03 S16 -4.2506E+00 1.1322E+00 -3.3502E-01 1.3055E-01 -6.1203E-02 4.4461E-04 2.1402E-03 Face number A18 A20 A22 A24 A26 A28 A30 S1 7.5379E-06 4.5966E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 6.6024E-06 -1.1340E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 1.5230E-06 -3.6730E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 -1.8051E-05 -3.8649E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 1.3077E-06 8.9816E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 5.3793E-06 2.3672E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 1.4986E-06 7.0819E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S8 7.2604E-05 2.0360E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S9 3.3382E-05 8.0136E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S10 4.5026E-05 -1.0882E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S11 -6.6346E-04 -2.2110E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S12 -2.0257E-04 -4.5055E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S13 -1.1585E-03 3.0938E-04 -1.8061E-05 -2.2517E-04 0.0000E+00 0.0000E+00 0.0000E+00 S14 -7.3546E-03 2.3385E-03 -6.9248E-04 -1.8932E-05 -5.4239E-04 0.0000E+00 0.0000E+00 S15 -7.8021E-04 5.3796E-04 -1.8349E-03 1.2751E-03 -6.1426E-04 0.0000E+00 0.0000E+00 S16 4.6505E-04 -1.7692E-03 6.4919E-04 7.1369E-04 -1.2903E-03 0.0000E+00 0.0000E+00

[0114] Table 4

[0115] Figure 4A Shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 2, which represents the deviation of the convergence focal points of light rays of different wavelengths after passing through the lens. Figure 4B Shows the astigmatism curve of the optical imaging lens of Embodiment 2, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 4C Shows the distortion curve of the optical imaging lens of Embodiment 2, which represents the distortion magnitude values corresponding to different image heights. Figure 4D Shows the lateral chromatic aberration curve of the optical imaging lens of Embodiment 2, which represents the deviation of different image heights of light rays on the imaging surface after passing through the lens. According toFigures 4A to 4D It can be seen that the optical imaging lens given in Embodiment 2 can achieve good imaging quality.

[0116] Example 3

[0117] The following refers to Figures 5 to 6D the optical imaging lens according to Embodiment 3 of the present application is described. Figure 5 The structural schematic diagram of the optical imaging lens according to Embodiment 3 of the present application is shown.

[0118] As Figure 5 shown, the optical imaging lens sequentially includes, from the object side to the image side along the optical axis: a diaphragm 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, and a filter E9.

[0119] The first lens E1 has a positive optical power, its object side S1 is a convex surface, and its image side S2 is a concave surface. The second lens E2 has a negative optical power, its object side S3 is a convex surface, and its image side S4 is a concave surface. The third lens E3 has a positive optical power, its object side S5 is a convex surface, and its image side S6 is a concave surface. The fourth lens E4 has a negative optical power, its object side S7 is a concave surface, and its image side S8 is a convex surface. The fifth lens E5 has a negative optical power, its object side S9 is a convex surface, and its image side S10 is a concave surface. The sixth lens E6 has a negative optical power, its object side S11 is a concave surface, and its image side S12 is a convex surface. The seventh lens E7 has a positive optical power, its object side S13 is a convex surface, and its image side S14 is a concave surface. The eighth lens E8 has a negative optical power, its object side S15 is a concave surface, and its image side S16 is a concave surface. The filter E9 has an object side S17 and an image side S18. The optical imaging lens has an imaging surface S19, and the light from the object sequentially passes through the surfaces S1 to S18 and finally forms an image on the imaging surface S19.

[0120] In Embodiment 3, the value of the total effective focal length f of the optical imaging lens is 6.65 mm, the on-axis distance TTL from the object side S1 of the first lens E1 to the imaging surface S19 is 7.57 mm, and the value of the maximum field of view FOV is 76.1°.

[0121] Table 5 shows the basic parameter table of the optical imaging lens of Embodiment 3, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm). Table 6 shows the higher-order term coefficients of the aspherical mirror surfaces that can be used in Embodiment 3, where each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0122]

[0123] Table 5

[0124]

[0125]

[0126] Table 6

[0127] Figure 6A shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 3, which represents the deviation of the converging focal points of light rays of different wavelengths after passing through the lens. Figure 6B shows the astigmatism curve of the optical imaging lens of Embodiment 3, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 6C shows the distortion curve of the optical imaging lens of Embodiment 3, which represents the distortion magnitude values corresponding to different image heights. Figure 6D shows the lateral chromatic aberration curve of the optical imaging lens of Embodiment 3, which represents the deviation of different image heights on the imaging plane after the light rays pass through the lens. According to Figures 6A to 6D it can be known that the optical imaging lens given in Embodiment 3 can achieve good imaging quality.

[0128] Example 4

[0129] The following refers to Figures 7 to 8D describes the optical imaging lens according to Embodiment 4 of the present application. Figure 7 shows a schematic structural diagram of the optical imaging lens according to Embodiment 4 of the present application.

[0130] As Figure 7 shown, the optical imaging lens sequentially includes, from the object side to the image side along the optical axis: a diaphragm 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, and a filter E9.

[0131] The first lens E1 has a positive optical power, with its object side S1 being convex and its image side S2 being concave. The second lens E2 has a negative optical power, with its object side S3 being convex and its image side S4 being concave. The third lens E3 has a positive optical power, with its object side S5 being convex and its image side S6 being concave. The fourth lens E4 has a negative optical power, with its object side S7 being concave and its image side S8 being convex. The fifth lens E5 has a positive optical power, with its object side S9 being convex and its image side S10 being concave. The sixth lens E6 has a negative optical power, with its object side S11 being concave and its image side S12 being convex. The seventh lens E7 has a positive optical power, with its object side S13 being convex and its image side S14 being concave. The eighth lens E8 has a negative optical power, with its object side S15 being concave and its image side S16 being concave. The filter E9 has an object side S17 and an image side S18. The optical imaging lens has an imaging surface S19, and light from an object sequentially passes through the surfaces S1 to S18 and finally forms an image on the imaging surface S19.

[0132] In Embodiment 4, the value of the total effective focal length f of the optical imaging lens is 6.65 mm, the value of the on-axis distance TTL from the object side S1 of the first lens E1 to the imaging surface S19 is 7.62 mm, and the value of the maximum field of view FOV is 76.2°.

[0133] Table 7 shows the basic parameter table of the optical imaging lens of Embodiment 4, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm). Table 8 shows the higher-order term coefficients of the aspherical mirror surfaces that can be used in Embodiment 4, where each aspherical surface type can be defined by the formula (1) given in the above Embodiment 1.

[0134]

[0135] Table 7

[0136]

[0137]

[0138] Table 8

[0139] Figure 8A shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 4, which represents the deviation of the convergence focal points of light rays of different wavelengths after passing through the lens. Figure 8B shows the astigmatism curve of the optical imaging lens of Embodiment 4, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 8C shows the distortion curve of the optical imaging lens of Embodiment 4, which represents the distortion magnitude values corresponding to different image heights. Figure 8D shows the lateral chromatic aberration curve of the optical imaging lens of Embodiment 4, which represents the deviation of different image heights on the imaging surface after the light rays pass through the lens. According toFigures 8A to 8D It can be seen that the optical imaging lens given in Embodiment 4 can achieve good imaging quality.

[0140] Example 5

[0141] The following refers to Figures 9 to 10D the optical imaging lens according to Embodiment 5 of the present application is described. Figure 9 FIG. shows a schematic structural diagram of the optical imaging lens according to Embodiment 5 of the present application.

[0142] As Figure 9 shown, the optical imaging lens sequentially includes, from the object side to the image side along the optical axis: a stop 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, and a filter E9.

[0143] The first lens E1 has a positive optical power, its object side surface S1 is a convex surface, and its image side surface S2 is a concave surface. The second lens E2 has a negative optical power, its object side surface S3 is a convex surface, and its image side surface S4 is a concave surface. The third lens E3 has a positive optical power, its object side surface S5 is a convex surface, and its image side surface S6 is a concave surface. The fourth lens E4 has a negative optical power, its object side surface S7 is a concave surface, and its image side surface S8 is a concave surface. The fifth lens E5 has a positive optical power, its object side surface S9 is a convex surface, and its image side surface S10 is a concave surface. The sixth lens E6 has a negative optical power, its object side surface S11 is a concave surface, and its image side surface S12 is a convex surface. The seventh lens E7 has a positive optical power, its object side surface S13 is a convex surface, and its image side surface S14 is a concave surface. The eighth lens E8 has a negative optical power, its object side surface S15 is a concave surface, and its image side surface S16 is a concave surface. The filter E9 has an object side surface S17 and an image side surface S18. The optical imaging lens has an imaging surface S19, and light from an object sequentially passes through each surface S1 to S18 and finally forms an image on the imaging surface S19.

[0144] In Embodiment 5, the value of the total effective focal length f of the optical imaging lens is 6.47 mm, the value of the on-axis distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S19 is 7.50 mm, and the value of the maximum field of view FOV is 77.5°.

[0145] Table 9 shows the basic parameter table of the optical imaging lens of Embodiment 5, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm). Table 10 shows the higher-order term coefficients of the aspherical mirror surfaces that can be used in Embodiment 5, where each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0146]

[0147] Table 9

[0148]

[0149]

[0150] Table 10

[0151] Figure 10A shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 5, which represents the deviation of the converging focal points of light rays with different wavelengths after passing through the lens. Figure 10B shows the astigmatism curve of the optical imaging lens of Embodiment 5, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 10C shows the distortion curve of the optical imaging lens of Embodiment 5, which represents the distortion magnitude values corresponding to different image heights. Figure 10D shows the lateral chromatic aberration curve of the optical imaging lens of Embodiment 5, which represents the deviation of different image heights on the imaging plane after the light rays pass through the lens. According to Figures 10A to 10D it can be known that the optical imaging lens given in Embodiment 5 can achieve good imaging quality.

[0152] Example 6

[0153] The following refers to Figures 11 to 12D describes the optical imaging lens according to Embodiment 6 of the present application. Figure 11 shows a schematic structural diagram of the optical imaging lens according to Embodiment 6 of the present application.

[0154] As Figure 11 shown, the optical imaging lens sequentially includes, from the object side to the image side along the optical axis: a stop 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, and a filter E9.

[0155] The first lens E1 has a positive optical power, with its object side S1 being convex and its image side S2 being concave. The second lens E2 has a negative optical power, with its object side S3 being convex and its image side S4 being concave. The third lens E3 has a positive optical power, with its object side S5 being convex and its image side S6 being concave. The fourth lens E4 has a positive optical power, with its object side S7 being concave and its image side S8 being convex. The fifth lens E5 has a positive optical power, with its object side S9 being convex and its image side S10 being concave. The sixth lens E6 has a negative optical power, with its object side S11 being concave and its image side S12 being concave. The seventh lens E7 has a positive optical power, with its object side S13 being convex and its image side S14 being convex. The eighth lens E8 has a negative optical power, with its object side S15 being concave and its image side S16 being convex. The filter E9 has an object side S17 and an image side S18. The optical imaging lens has an imaging surface S19, and the light from the object sequentially passes through the surfaces S1 to S18 and finally forms an image on the imaging surface S19.

[0156] In Embodiment 6, the value of the total effective focal length f of the optical imaging lens is 6.29 mm, the value of the on-axis distance TTL from the object side S1 of the first lens E1 to the imaging surface S19 is 7.42 mm, and the value of the maximum field of view FOV is 83.6°.

[0157] Table 11 shows the basic parameter table of the optical imaging lens of Embodiment 6, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm). Table 12 shows the higher-order term coefficients of the aspherical mirror surfaces that can be used in Embodiment 6, and each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0158]

[0159]

[0160] Table 11

[0161]

[0162]

[0163] Table 12

[0164] Figure 12A Shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 6, which represents the deviation of the converging focal points of light rays of different wavelengths after passing through the lens. Figure 12B Shows the astigmatism curve of the optical imaging lens of Embodiment 6, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 12C Shows the distortion curve of the optical imaging lens of Embodiment 6, which represents the distortion magnitude values corresponding to different image heights. Figure 12DShows the longitudinal chromatic aberration curve of the optical imaging lens of Embodiment 6, which represents the deviation of different image heights on the imaging surface after light passes through the lens. According to Figures 12A to 12D it can be known that the optical imaging lens given in Embodiment 6 can achieve good imaging quality.

[0165] Example 7

[0166] The following refers to Figures 13 to 14D and describes the optical imaging lens according to Embodiment 7 of the present application. Figure 13 Shows a schematic structural diagram of the optical imaging lens according to Embodiment 7 of the present application.

[0167] As Figure 13 shown, the optical imaging lens sequentially includes, from the object side to the image side along the optical axis: a stop 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, and a filter E9.

[0168] The first lens E1 has a positive optical power, its object side S1 is a convex surface, and its image side S2 is a concave surface. The second lens E2 has a negative optical power, its object side S3 is a convex surface, and its image side S4 is a concave surface. The third lens E3 has a positive optical power, its object side S5 is a convex surface, and its image side S6 is a concave surface. The fourth lens E4 has a positive optical power, its object side S7 is a concave surface, and its image side S8 is a convex surface. The fifth lens E5 has a negative optical power, its object side S9 is a convex surface, and its image side S10 is a concave surface. The sixth lens E6 has a negative optical power, its object side S11 is a concave surface, and its image side S12 is a concave surface. The seventh lens E7 has a positive optical power, its object side S13 is a convex surface, and its image side S14 is a convex surface. The eighth lens E8 has a negative optical power, its object side S15 is a concave surface, and its image side S16 is a convex surface. The filter E9 has an object side S17 and an image side S18. The optical imaging lens has an imaging surface S19, and light from the object sequentially passes through the surfaces S1 to S18 and finally forms an image on the imaging surface S19.

[0169] In Embodiment 7, the value of the total effective focal length f of the optical imaging lens is 6.38 mm, the on-axis distance TTL from the object side S1 of the first lens E1 to the imaging surface S19 is 7.49 mm, and the value of the maximum field of view FOV is 82.8°.

[0170] Table 13 shows the basic parameter table of the optical imaging lens of Embodiment 7, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm). Table 14 shows the high-order term coefficients that can be used for each aspherical mirror surface in Embodiment 7, where each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0171]

[0172]

[0173] Table 13

[0174] Face number A4 A6 A8 A10 A12 A14 A16 S1 -5.4808E-02 -1.8424E-02 -5.9586E-03 -1.7925E-03 -5.3651E-04 -1.5765E-04 -4.8013E-05 S2 -2.1426E-02 1.1856E-03 -2.3573E-03 1.4457E-04 -1.8349E-04 1.8901E-05 -1.2126E-05 S3 -4.8663E-02 1.8120E-02 -2.5771E-03 5.7567E-04 -4.9667E-05 9.2043E-05 1.1575E-05 S4 -8.8585E-03 1.1718E-02 -1.3517E-04 -2.8564E-04 -3.2455E-04 -1.3328E-04 -4.5775E-05 S5 1.2174E-02 1.3699E-02 4.5976E-03 5.7492E-04 -9.2587E-05 -8.8578E-05 -3.7675E-05 S6 -1.0893E-02 4.9112E-03 1.8377E-03 3.9012E-04 6.5514E-05 1.4725E-05 2.5787E-06 S7 -1.4875E-01 -1.0404E-02 -8.4672E-04 -4.7936E-05 -4.4805E-05 -1.1952E-05 8.7265E-07 S8 -2.6295E-01 -8.9381E-03 9.7114E-04 5.7358E-04 2.3964E-04 1.9059E-04 1.2608E-04 S9 -3.4540E-01 -5.6520E-03 -4.1513E-04 -1.5485E-03 -3.3432E-04 -2.1408E-04 1.9696E-05 S10 -3.6936E-01 1.5035E-02 2.6582E-03 -2.6422E-03 6.1849E-04 -2.1129E-04 1.0469E-04 S11 -3.6371E-01 -7.3493E-02 7.5362E-03 6.3518E-03 3.1826E-03 9.1440E-04 3.8542E-04 S12 -1.1460E+00 1.3972E-01 -2.2711E-02 1.5145E-02 -5.0291E-03 3.2368E-03 1.1448E-03 S13 -3.2655E+00 4.4550E-01 -1.3751E-02 -6.6770E-04 -2.3355E-02 3.4923E-03 1.3174E-03 S14 7.5865E-01 5.0464E-01 3.5562E-02 -1.2164E-01 6.1138E-02 -5.2315E-02 3.1486E-04 S15 -8.5978E-02 6.7829E-01 -3.3647E-01 1.3221E-01 -3.1332E-02 -2.5654E-03 3.9097E-03 S16 1.0372E+00 9.8922E-02 3.9394E-03 1.7392E-01 1.2575E-01 4.3243E-02 -6.0973E-03 Face number A18 A20 A22 A24 A26 A28 A30 S1 -1.1559E-05 -3.7153E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 2.3502E-06 -1.1138E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 7.0005E-06 4.8583E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 -1.0987E-05 -1.5099E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 -1.2204E-05 -2.9526E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 1.4938E-06 -1.7445E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 8.4098E-07 1.3593E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S8 4.7530E-05 2.0476E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S9 -2.3514E-05 -4.2540E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S10 -8.3295E-05 3.7310E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S11 -3.1138E-05 -6.6035E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S12 5.4957E-04 1.9661E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S13 1.3835E-03 -1.2673E-04 1.7130E-04 -7.7471E-05 0.0000E+00 0.0000E+00 0.0000E+00 S14 1.3320E-02 -1.2147E-02 2.5810E-03 2.5522E-04 -3.7675E-04 -2.4322E-05 -1.2515E-05 S15 8.3605E-04 -3.5417E-03 2.9675E-03 -1.3732E-03 3.5188E-04 -2.1716E-06 -1.4417E-05 S16 2.5619E-02 -4.9994E-02 5.5977E-02 -2.3639E-02 2.1926E-02 -2.8780E-03 2.2063E-03

[0175] Table 14

[0176] Figure 14A The axial chromatic aberration curve of the optical imaging lens of Example 7 is shown, which represents the deviation of the convergence focal points of light rays with different wavelengths after passing through the lens. Figure 14B The astigmatism curve of the optical imaging lens of Example 7 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 14C The distortion curve of the optical imaging lens of Example 7 is shown, which represents the distortion magnitude values corresponding to different image heights. Figure 14D The lateral chromatic aberration curve of the optical imaging lens of Example 7 is shown, which represents the deviation of different image heights on the imaging plane after the light rays pass through the lens. According to Figures 14A to 14D It can be seen that the optical imaging lens given in Example 7 can achieve good imaging quality.

[0177] Example 8

[0178] The following refers to Figures 15 to 16D The optical imaging lens according to Embodiment 8 of the present application is described. Figure 15 The structural schematic diagram of the optical imaging lens according to Embodiment 8 of the present application is shown.

[0179] As Figure 15 shown, the optical imaging lens sequentially includes, from the object side to the image side along the optical axis: a stop 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, and a filter E9.

[0180] The first lens E1 has a positive optical power, with its object side S1 being convex and its image side S2 being concave. The second lens E2 has a negative optical power, with its object side S3 being convex and its image side S4 being concave. The third lens E3 has a positive optical power, with its object side S5 being convex and its image side S6 being concave. The fourth lens E4 has a positive optical power, with its object side S7 being concave and its image side S8 being convex. The fifth lens E5 has a negative optical power, with its object side S9 being convex and its image side S10 being concave. The sixth lens E6 has a negative optical power, with its object side S11 being concave and its image side S12 being convex. The seventh lens E7 has a positive optical power, with its object side S13 being convex and its image side S14 being convex. The eighth lens E8 has a negative optical power, with its object side S15 being concave and its image side S16 being convex. The filter E9 has an object side S17 and an image side S18. The optical imaging lens has an imaging surface S19, and light from an object sequentially passes through the surfaces S1 to S18 and finally forms an image on the imaging surface S19.

[0181] In Embodiment 8, the value of the total effective focal length f of the optical imaging lens is 6.31 mm, the value of the on-axis distance TTL from the object side S1 of the first lens E1 to the imaging surface S19 is 7.52 mm, and the value of the maximum field of view FOV is 78.6°.

[0182] Table 15 shows the basic parameter table of the optical imaging lens of Embodiment 8, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm). Table 16 shows the higher-order term coefficients that can be used for each aspherical mirror surface in Embodiment 8, and each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0183]

[0184]

[0185] Table 15

[0186] Face number A4 A6 A8 A10 A12 A14 A16 S1 -4.8894E-02 -2.0049E-02 -7.6023E-03 -2.4332E-03 -8.0422E-04 -2.4892E-04 -9.1230E-05 S2 -1.9443E-02 1.4121E-03 -2.6448E-03 3.7217E-04 -3.9845E-04 1.0808E-04 -6.7282E-05 S3 -4.5724E-02 1.9891E-02 -2.2216E-03 1.3206E-04 -7.2083E-04 -1.7670E-05 -2.0637E-04 S4 -8.5580E-03 1.0942E-02 -2.5964E-04 -5.1850E-04 -4.8649E-04 -9.0514E-05 -4.7971E-05 S5 1.5200E-02 1.3963E-02 3.6286E-03 2.3656E-04 -1.7494E-04 -8.0017E-05 -2.1486E-05 S6 -1.2656E-02 5.3094E-03 1.7385E-03 2.5220E-04 4.8399E-05 -9.8397E-06 8.4031E-06 S7 -1.5113E-01 -1.2497E-02 -4.1085E-04 -1.7377E-04 -6.4846E-05 -2.1644E-05 -1.5888E-05 S8 2.6045E-01 -6.5349E-03 -6.7606E-03 2.3536E-03 -1.6107E-03 9.1263E-04 -5.1242E-04 S9 -3.4251E-01 7.1763E-04 -1.6374E-03 -8.7360E-04 -1.2579E-04 -1.6023E-04 -7.8276E-06 S10 -4.1672E-01 1.9804E-02 3.2477E-03 -1.5192E-03 3.1903E-04 -6.0216E-04 -4.4054E-05 S11 -4.9791E-01 -8.3092E-02 8.8055E-03 5.2263E-03 5.0392E-03 1.4400E-03 2.5425E-04 S12 -1.0896E+00 1.0916E-01 -2.5456E-03 9.3554E-03 8.4522E-04 9.3148E-04 -6.4831E-05 S13 -3.3965E+00 4.1398E-01 1.4523E-02 -3.7358E-02 -2.6304E-02 7.6318E-03 1.0747E-02 S14 5.9486E-01 4.6813E-01 6.7357E-02 -6.8712E-02 6.1687E-03 -2.7346E-02 1.1222E-02 S15 -1.3071E-01 6.7736E-01 -3.4341E-01 1.2811E-01 -3.2307E-02 -2.3014E-03 4.0650E-03 S16 9.9799E-01 -1.4650E-01 3.7053E-01 2.1098E-02 1.3956E-01 9.8129E-02 -9.6293E-02 Face number A18 A20 A22 A24 A26 A28 A30 S1 -2.9618E-05 -1.7680E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 3.7253E-06 -9.6361E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 -3.3605E-05 -2.3645E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 -3.1016E-06 -5.2048E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 -2.4664E-05 9.7904E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 -2.0834E-06 -9.2949E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 1.4040E-06 -6.5868E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S8 2.1409E-04 -5.7643E-05 2.8773E-05 -7.2186E-06 0.0000E+00 0.0000E+00 0.0000E+00 S9 -2.5802E-05 9.0859E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S10 -1.1407E-04 3.5316E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S11 -3.5795E-04 -1.8461E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S12 -7.7177E-04 -1.0395E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S13 2.7409E-03 -1.3937E-03 -1.4164E-03 -4.9249E-04 0.0000E+00 0.0000E+00 0.0000E+00 S14 -6.0153E-03 2.1902E-03 -3.6379E-03 4.5415E-03 -3.0258E-03 2.0185E-03 -5.3139E-04 S15 1.3008E-03 -3.2539E-03 2.2691E-03 -1.2025E-03 3.9445E-04 1.7987E-04 -1.5002E-04 S16 5.4351E-02 -4.1850E-02 3.0916E-02 -4.2376E-03 1.0953E-02 -6.0780E-03 4.2335E-03

[0187] Table 16

[0188] Figure 16A shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 8, which represents the deviation of the convergence focal points of light rays of different wavelengths after passing through the lens. Figure 16B shows the astigmatism curve of the optical imaging lens of Embodiment 8, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 16C shows the distortion curve of the optical imaging lens of Embodiment 8, which represents the distortion magnitude values corresponding to different image heights. Figure 16D shows the lateral chromatic aberration curve of the optical imaging lens of Embodiment 8, which represents the deviation of different image heights on the imaging surface after light rays pass through the lens. According toFigures 16A to 16D It can be seen that the optical imaging lens provided in Embodiment 8 can achieve good imaging quality.

[0189] In summary, Embodiments 1 to 8 respectively satisfy the relationships shown in Table 17.

[0190]

[0191]

[0192] Table 17

[0193] The present application also provides an imaging device, which is provided with an electronic photosensitive element for imaging. The electronic photosensitive element can be a charge coupled device (CCD) or a complementary metal oxide semiconductor element (CMOS). The imaging device can be an independent imaging device such as a digital camera, or an imaging module integrated on a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens described above.

[0194] The above description is only the preferred embodiments of the present application and the description of the applied technical principles. Those skilled in the art should understand that the protection scope involved in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, but also covers other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the present application. For example, the technical solutions formed by mutually replacing the above features with the (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. An optical imaging lens, characterized in that, It sequentially includes, from the object side to the image side along the optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens; The first lens has a positive optical power, its object side is convex, and its image side is concave; the second lens has a negative optical power, its object side is convex, and its image side is concave; the third lens has a positive optical power, its object side is convex, and its image side is concave; the object side of the fourth lens is concave; the object side of the sixth lens is concave; the seventh lens has a positive optical power, its object side is convex; the eighth lens has a negative optical power, its object side is concave; The sixth lens has a negative optical power; or, the sixth lens has a positive optical power and the fourth lens has a positive optical power, and the fifth lens has a negative optical power; The number of lenses with optical power in the optical imaging lens is eight; Wherein, the maximum semi-field angle Semi-FOV of the optical imaging lens and the total effective focal length f of the optical imaging lens satisfy 4.67 mm ≤ f × tan(Semi-FOV) ≤ 5.62 mm; The curvature radius R13 of the object side of the seventh lens, the curvature radius R15 of the object side of the eighth lens, and the spacing distance T78 between the seventh lens and the eighth lens on the optical axis satisfy -6.01 ≤ (R13 + R15) / T78 ≤ -3.71; and The combined focal length f12 of the first lens and the second lens and the effective focal length f3 of the third lens satisfy 2.15 < f3 / f12 < 5.80; 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 satisfy 3.37 ≤ f2 / (R3 - R4) < 7.

70.

2. The optical imaging lens according to claim 1, characterized in that, The total effective focal length f of the optical imaging lens and the effective focal length f7 of the seventh lens satisfy 0.5 ≤ f / f7 ≤ 1.

0.

3. The optical imaging lens according to claim 1, characterized in that, The total effective focal length f of the optical imaging lens and the effective focal length f8 of the eighth lens satisfy -1.30 < f / f8 < -1.

15.

4. The optical imaging lens according to claim 1, characterized in that, The effective focal length f1 of the first lens and the curvature radius R1 of the object side of the first lens satisfy 2.05 < f1 / R1 < 2.

30.

5. The optical imaging lens according to claim 1, characterized in that, The effective focal length f3 of the third lens and the curvature radius R6 of the image side of the third lens satisfy 1.05 ≤ f3 / R6 ≤ 4.

93.

6. The optical imaging lens according to claim 1, characterized in that, The total effective focal length f of the optical imaging lens and the curvature radius R11 of the object side of the sixth lens satisfy -0.74 ≤ f / R11 < -0.

20.

7. The optical imaging lens according to claim 1, characterized in that, The curvature radius R7 of the object side of the fourth lens and the curvature radius R5 of the object side of the third lens satisfy -5.50 < R7 / R5 ≤ -2.

15.

8. The optical imaging lens according to claim 1, characterized in that, The curvature radius R7 of the object side of the fourth lens and the curvature radius R11 of the object side of the sixth lens satisfy 0.20 < R11 / R7 ≤ 1.

94.

9. The optical imaging lens according to claim 1, characterized in that, The central thickness CT2 of the second lens and the spacing distance T23 between the second lens and the third lens on the optical axis satisfy 0.9 ≤ CT2 / T23 ≤ 1.

5.

10. The optical imaging lens according to claim 1, characterized in that, The central thickness CT6 of the sixth lens on the optical axis, the central thickness CT7 of the seventh lens on the optical axis, and the central thickness CT8 of the eighth lens on the optical axis satisfy 0.56 mm ≤ (CT6 + CT7 + CT8) / 3 < 0.7 mm.

11. The optical imaging lens according to claim 1, characterized in that, The central thickness CT3 of the third lens on the optical axis, the central thickness CT4 of the fourth lens on the optical axis, the central thickness CT5 of the fifth lens on the optical axis, and the distance T56 between the fifth lens and the sixth lens on the optical axis satisfy 2.15 < (CT3 + CT4 + CT5) / T56 < 3.

10.

12. The optical imaging lens according to any one of claims 1 to 11, characterized in that, The Abbe number V4 of the fourth lens and the Abbe number V6 of the sixth lens satisfy V4 - V6 ≤13.

83.

13. The optical imaging lens according to any one of claims 1 to 11, characterized in that, The Abbe number V5 of the fifth lens satisfies 19.39 ≤ V5 ≤ 26.

24.

14. The optical imaging lens according to any one of claims 1 to 11, characterized in that, The sum ∑CT of the central thicknesses of each lens from the first lens to the eighth lens on the optical axis and the sum ∑AT of the distances between any two adjacent lenses from the first lens to the eighth lens on the optical axis satisfy 1.4 ≤ ∑CT / ∑AT ≤ 1.

95.

15. The optical imaging lens according to any one of claims 1 to 11, characterized in that, The distance TTL on the optical axis from the object side surface of the first lens to the imaging surface of the optical imaging lens and half of the diagonal length ImgH of the effective pixel region on the imaging surface of the optical imaging lens satisfy 1.29 ≤ TTL / ImgH < 1.5, or TTL / ImgH = 1.64.

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