Optical imaging lens

Abstract

The application discloses an optical imaging lens, which comprises, in sequence from the object side to the image side along the optical axis, a first lens with optical power, 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 positive optical power; the third lens has positive optical power, and both the object side and the image side of the third lens are convex; the object side of the sixth lens is convex; and the eighth lens has negative optical power, and the object side of the eighth lens is concave. The total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy f / EPD≤2.0.

Description

[0001] Divisional application statement

[0002] This application is a divisional application of Chinese invention patent application filed on August 2, 2018, entitled "Optical Imaging Lens" with application number 201810872500.2. Technical Field

[0003] This application relates to an optical imaging lens, and more specifically, to an optical imaging lens comprising eight lenses. Background Technology

[0004] In recent years, with the rapid advancements in smartphone technology, phones with simple communication functions can no longer meet consumer demands. High-resolution camera capabilities and top-notch image processing have become essential features of smartphones. Correspondingly, for lenses used in portable electronic devices such as smartphones, higher image quality and smaller lens module sizes have become inevitable development trends. Technically speaking, lens image quality can be improved through lens material selection, surface coating technology improvements, structural design optimization, and optical design enhancements. Increasing the number of lenses in a lens is the most direct way to improve image quality. However, how to maintain the ultra-thin characteristics of a lens while minimizing its size remains a major challenge in lens design. Summary of the Invention

[0005] This application provides an optical imaging lens that is applicable to portable electronic products and can at least partially solve at least one of the above-mentioned disadvantages in the prior art.

[0006] On one hand, this application provides an optical imaging lens comprising, along the optical axis 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, and an eighth lens, each having optical power. The first lens may have positive optical power; the third lens may have positive optical power, and both its object-side and image-side surfaces may be convex; the object-side surface of the sixth lens may be convex; and the eighth lens may have negative optical power, and its object-side surface may be concave. The total effective focal length f and the entrance pupil diameter EPD of the optical imaging lens satisfy f / EPD ≤ 2.0.

[0007] In one embodiment, the effective focal length f1 of the first lens and the effective focal length f3 of the third lens can satisfy 1.7 < f1 / f3 < 3.

[0008] In one embodiment, the effective focal length f2 of the second lens and the effective focal length f8 of the eighth lens can satisfy 1 < f2 / f8 < 2.

[0009] In one embodiment, the total effective focal length f of the optical imaging lens, the effective focal length f5 of the fifth lens, and the effective focal length f7 of the seventh lens can satisfy |f / f5|+|f / f7|<0.5.

[0010] In one embodiment, the radius of curvature R1 of the object side of the first lens and the radius of curvature R4 of the image side of the second lens can satisfy 0.6 < R1 / R4 < 1.

[0011] In one embodiment, the radius of curvature R2 of the image side of the first lens and the radius of curvature R3 of the object side of the second lens can satisfy 0.5 < R2 / R3 < 0.9.

[0012] In one embodiment, the total effective focal length f of the optical imaging lens, the radius of curvature R5 of the object side of the third lens, and the radius of curvature R6 of the image side of the third lens can satisfy 0.4 < f / (|R5|+|R6|) < 1.

[0013] In one embodiment, the radius of curvature R11 of the object side of the sixth lens and the radius of curvature R12 of the image side of the sixth lens can satisfy 0.2 < R11 / R12 < 1.2.

[0014] In one embodiment, the radius of curvature R15 of the object side of the eighth lens and the radius of curvature R16 of the image side of the eighth lens can satisfy -1.4 < R15 / R16 < -0.2.

[0015] In one embodiment, the total effective focal length f of the optical imaging lens and the radius of curvature R13 of the object side surface of the seventh lens can satisfy 0 < f / R13 < 0.5.

[0016] In one embodiment, the center thickness CT3 of the third lens on the optical axis and the distance TTL from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis can satisfy 1 < CT3 / TTL*10 < 1.5.

[0017] In one embodiment, the center thickness CT6 of the sixth lens on the optical axis, the center thickness CT7 of the seventh lens on the optical axis, and the center thickness CT8 of the eighth lens on the optical axis can satisfy 0.5 < CT8 / (CT6+CT7) < 1.5.

[0018] In one embodiment, the spacing T12 between the first and second lenses on the optical axis, the spacing T45 between the fourth and fifth lenses on the optical axis, and the spacing T67 between the sixth and seventh lenses on the optical axis can satisfy 0.6 < T67 / (T12+T45) < 1.1.

[0019] In one embodiment, the distance TTL from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis and half the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens, ImgH, can satisfy TTL / ImgH≤1.6.

[0020] On the other hand, this application provides an optical imaging lens comprising, along the optical axis 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, and an eighth lens, each having optical power. The first lens may have positive optical power; the third lens may have positive optical power, and both its object-side and image-side surfaces may be convex; the object-side surface of the sixth lens may be convex; and the eighth lens may have negative optical power, and its object-side surface may be concave. The effective focal length f1 of the first lens and the effective focal length f3 of the third lens may satisfy 1.7 < f1 / f3 < 3.

[0021] On another front, this application provides an optical imaging lens comprising, along the optical axis 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, and an eighth lens, each having optical power. The first lens may have positive optical power; the third lens may have positive optical power, and both its object-side and image-side surfaces may be convex; the object-side surface of the sixth lens may be convex; and the eighth lens may have negative optical power, and its object-side surface may be concave. The effective focal length f2 of the second lens and the effective focal length f8 of the eighth lens satisfy 1 < f2 / f8 < 2.

[0022] On another front, this application provides an optical imaging lens comprising, along the optical axis 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, and an eighth lens, each having optical power. The first lens may have positive optical power; the third lens may have positive optical power, and both its object-side and image-side surfaces may be convex; the object-side surface of the sixth lens may be convex; and the eighth lens may have negative optical power, and its object-side surface may be concave. The total effective focal length f of the optical imaging lens, the effective focal length f5 of the fifth lens, and the effective focal length f7 of the seventh lens satisfy |f / f5|+|f / f7|<0.5.

[0023] On another front, this application provides an optical imaging lens comprising, along the optical axis 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, and an eighth lens, each having optical power. The first lens may have positive optical power; the third lens may have positive optical power, and both its object-side and image-side surfaces may be convex; the object-side surface of the sixth lens may be convex; and the eighth lens may have negative optical power, and its object-side surface may be concave. The radius of curvature R1 of the object-side surface of the first lens and the radius of curvature R4 of the image-side surface of the second lens may satisfy 0.6 < R1 / R4 < 1.

[0024] On another front, this application provides an optical imaging lens comprising, along the optical axis 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, and an eighth lens, each having optical power. The first lens may have positive optical power; the third lens may have positive optical power, and both its object-side and image-side surfaces may be convex; the object-side surface of the sixth lens may be convex; and the eighth lens may have negative optical power, and its object-side surface may be concave. The radius of curvature R2 of the image-side surface of the first lens and the radius of curvature R3 of the object-side surface of the second lens may satisfy 0.5 < R2 / R3 < 0.9.

[0025] On another front, this application provides an optical imaging lens comprising, along the optical axis 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, and an eighth lens, each having optical power. The first lens may have positive optical power; the third lens may have positive optical power, and both its object-side and image-side surfaces may be convex; the object-side surface of the sixth lens may be convex; and the eighth lens may have negative optical power, and its object-side surface may be concave. The total effective focal length f of the optical imaging lens, the radius of curvature R5 of the object-side surface of the third lens, and the radius of curvature R6 of the image-side surface of the third lens may satisfy 0.4 < f / (|R5|+|R6|) < 1.

[0026] On another front, this application provides an optical imaging lens comprising, along the optical axis 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, and an eighth lens, each having optical power. The first lens may have positive optical power; the third lens may have positive optical power, and both its object-side and image-side surfaces may be convex; the object-side surface of the sixth lens may be convex; and the eighth lens may have negative optical power, and its object-side surface may be concave. The radius of curvature R11 of the object-side surface of the sixth lens and the radius of curvature R12 of the image-side surface of the sixth lens may satisfy 0.2 < R11 / R12 < 1.2.

[0027] On another front, this application provides an optical imaging lens comprising, along the optical axis 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, and an eighth lens, each having optical power. The first lens may have positive optical power; the third lens may have positive optical power, and both its object-side and image-side surfaces may be convex; the object-side surface of the sixth lens may be convex; and the eighth lens may have negative optical power, and its object-side surface may be concave. The radius of curvature R15 of the object-side surface of the eighth lens and the radius of curvature R16 of the image-side surface of the eighth lens may satisfy -1.4 < R15 / R16 < -0.2.

[0028] On another front, this application provides an optical imaging lens comprising, along the optical axis 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, and an eighth lens, each having optical power. The first lens may have positive optical power; the third lens may have positive optical power, and both its object-side and image-side surfaces may be convex; the object-side surface of the sixth lens may be convex; and the eighth lens may have negative optical power, and its object-side surface may be concave. The total effective focal length f of the optical imaging lens and the radius of curvature R13 of the object-side surface of the seventh lens may satisfy 0 < f / R13 < 0.5.

[0029] On another front, this application provides an optical imaging lens comprising, sequentially 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, each having optical power. The first lens may have positive optical power; the third lens may have positive optical power, and both its object-side and image-side surfaces may be convex; the object-side surface of the sixth lens may be convex; and the eighth lens may have negative optical power, and its object-side surface may be concave. The central thickness CT3 of the third lens along the optical axis and the distance TTL from the object-side surface of the first lens to the imaging surface of the optical imaging lens along the optical axis may satisfy 1 < CT3 / TTL*10 < 1.5.

[0030] On another front, this application provides an optical imaging lens comprising, sequentially 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, each having optical power. The first lens may have positive optical power; the third lens may have positive optical power, and both its object-side and image-side surfaces may be convex; the object-side surface of the sixth lens may be convex; and the eighth lens may have negative optical power, and its object-side surface may be concave. The central thickness CT6 of the sixth lens along the optical axis, the central thickness CT7 of the seventh lens along the optical axis, and the central thickness CT8 of the eighth lens along the optical axis may satisfy 0.5 < CT8 / (CT6 + CT7) < 1.5.

[0031] On another front, this application provides an optical imaging lens comprising, sequentially 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, each having optical power. The first lens may have positive optical power; the third lens may have positive optical power, and both its object-side and image-side surfaces may be convex; the object-side surface of the sixth lens may be convex; and the eighth lens may have negative optical power, and its object-side surface may be concave. The distance T12 between the first and second lenses on the optical axis, the distance T45 between the fourth and fifth lenses on the optical axis, and the distance T67 between the sixth and seventh lenses on the optical axis may satisfy 0.6 < T67 / (T12+T45) < 1.1.

[0032] On another front, this application provides an optical imaging lens comprising, along the optical axis 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, and an eighth lens, each having optical power. The first lens may have positive optical power; the third lens may have positive optical power, and both its object-side and image-side surfaces may be convex; the object-side surface of the sixth lens may be convex; and the eighth lens may have negative optical power, and its object-side surface may be concave. The distance TTL from the object-side surface of the first lens to the imaging surface of the optical imaging lens along the optical axis and half the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens must satisfy TTL / ImgH ≤ 1.6.

[0033] This application employs eight lenses. By rationally allocating the optical power, surface shape, center thickness of each lens, and on-axis spacing between each lens, the aforementioned optical imaging lens achieves at least one beneficial effect, such as miniaturization, large aperture, and high imaging quality. Attached Figure Description

[0034] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments, taken in conjunction with the accompanying drawings. In the drawings:

[0035] Figure 1 A schematic diagram of the structure of an optical imaging lens according to Embodiment 1 of this application is shown;

[0036] Figures 2A to 2D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Example 1 are shown respectively.

[0037] Figure 3 A schematic diagram of the structure of an optical imaging lens according to Embodiment 2 of this application is shown;

[0038] Figures 4A to 4DThe on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Example 2 are shown respectively.

[0039] Figure 5 A schematic diagram of the structure of an optical imaging lens according to Embodiment 3 of this application is shown;

[0040] Figures 6A to 6D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Example 3 are shown respectively.

[0041] Figure 7 A schematic diagram of the structure of an optical imaging lens according to Embodiment 4 of this application is shown;

[0042] Figures 8A to 8D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Example 4 are shown respectively.

[0043] Figure 9 A schematic diagram of the structure of an optical imaging lens according to Embodiment 5 of this application is shown;

[0044] Figures 10A to 10D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Example 5 are shown respectively.

[0045] Figure 11 A schematic diagram of the structure of an optical imaging lens according to Embodiment 6 of this application is shown;

[0046] Figures 12A to 12D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Example 6 are shown respectively.

[0047] Figure 13 A schematic diagram of the structure of an optical imaging lens according to Embodiment 7 of this application is shown;

[0048] Figures 14A to 14D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Example 7 are shown respectively.

[0049] Figure 15 A schematic diagram of the structure of an optical imaging lens according to Embodiment 8 of this application is shown;

[0050] Figures 16A to 16D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Example 8 are shown respectively.

[0051] Figure 17 A schematic diagram of the structure of an optical imaging lens according to Embodiment 9 of this application is shown;

[0052] Figures 18A to 18D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Example 9 are shown respectively.

[0053] Figure 19 A schematic diagram of the structure of an optical imaging lens according to Embodiment 10 of this application is shown;

[0054] Figures 20A to 20D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Example 10 are shown respectively. Detailed Implementation

[0055] To better understand this application, various aspects of this application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of exemplary embodiments of this application and are not intended to limit the scope of this 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.

[0056] It should be noted that in this specification, the terms "first," "second," "third," etc., are used only to distinguish one feature from another and do not imply any limitation on the features. Therefore, without departing from the teachings of this application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0057] In the accompanying drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are illustrated by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to those shown in the drawings. The drawings are for illustrative purposes only and are not strictly to scale.

[0058] In this paper, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the location of the convexity 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 location of the concaveness 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 surface of the lens, and the surface of each lens closest to the imaging plane is called the image-side surface of the lens.

[0059] It should also be understood that the terms "comprising," "including," "having," "containing," 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. Furthermore, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire list of features, not individual elements in the list. Additionally, when describing embodiments of this application, the word "may" is used to mean "one or more embodiments of this application." And the term "exemplary" is intended to refer to an example or illustration.

[0060] Unless otherwise specified, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should also be understood that terms (e.g., those defined in common dictionaries) shall be interpreted as having the meaning consistent with their meaning in the context of the relevant art and shall not be interpreted in an idealized or overly formal sense unless expressly so specified herein.

[0061] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0062] The features, principles and other aspects of this application are described in detail below.

[0063] An optical imaging lens according to an exemplary embodiment of this application may include, for example, eight lenses with optical power, 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 sequentially along the optical axis from the object side to the image side, and each adjacent lens may have an air gap.

[0064] In an exemplary embodiment, the first lens may have positive optical power; the second lens may have positive or negative optical power; the third lens may have positive optical power, with its object-side surface and image-side surface both being convex; the fourth lens may have positive or negative optical power; the fifth lens may have positive or negative optical power; the sixth lens may have positive or negative optical power, with its object-side surface being convex; the seventh lens may have positive or negative optical power; and the eighth lens may have negative optical power, with its object-side surface being concave. Controlling the first and third lenses to have positive optical power not only effectively reduces the system size but also allows for a more rational distribution of optical power, which is crucial for improving the system's aberration correction capabilities and reducing system sensitivity. The eighth lens, with negative optical power, is key to improving the image height of the imaging lens on the imaging plane.

[0065] In an exemplary embodiment, the object-side surface of the first lens may be convex, and the image-side surface may be concave.

[0066] In an exemplary embodiment, the second lens may have negative optical power, and its object side may be convex and its image side may be concave.

[0067] In an exemplary embodiment, the image-side surface of the sixth lens may be concave.

[0068] In an exemplary embodiment, the object-side surface of the seventh lens may be convex.

[0069] In an exemplary embodiment, the image-side surface of the eighth lens may be concave.

[0070] In an exemplary embodiment, the optical imaging lens of this application can satisfy the condition f / EPD≤2.0, where f is the total effective focal length of the optical imaging lens and EPD is the entrance pupil diameter of the optical imaging lens. More specifically, f and EPD can further satisfy 1.70≤f / EPD≤1.98. Satisfying the condition f / EPD≤2.0 can effectively increase the amount of light transmitted by the lens per unit time, giving the lens high relative illumination, thereby significantly improving the image quality of the lens in darker environments and making the lens more practical.

[0071] In an exemplary embodiment, the optical imaging lens of this application satisfies the condition 1.7 < f1 / f3 < 3, where f1 is the effective focal length of the first lens and f3 is the effective focal length of the third lens. More specifically, f1 and f3 can further satisfy 1.79 ≤ f1 / f3 ≤ 2.94. Reasonably allocating the optical power of the first and third lenses can effectively reduce the aberrations of the entire system and lower its sensitivity. Reasonably controlling the value of f1 helps avoid an excessively large tilt angle on the object side of the first lens, thus improving the manufacturability of the first lens. Simultaneously, satisfying the condition 1.7 < f1 / f3 < 3 also helps avoid problems such as poor system imaging quality and high sensitivity caused by an excessively large aperture of the third lens.

[0072] In an exemplary embodiment, the optical imaging lens of this application can satisfy the condition 1 < f2 / f8 < 2, where f2 is the effective focal length of the second lens and f8 is the effective focal length of the eighth lens. More specifically, f2 and f8 can further satisfy 1.26 ≤ f2 / f8 ≤ 1.74. Reasonably adjusting the effective focal lengths of the second and eighth lenses allows for a more reasonable distribution of the optical power of the imaging lens, preventing excessive concentration on the eighth lens, which is beneficial for improving the imaging quality of the system and reducing its sensitivity. Simultaneously, satisfying the condition 1 < f2 / f8 < 2 also helps maintain the ultra-thin characteristics of the imaging lens.

[0073] In an exemplary embodiment, the optical imaging lens of this application can satisfy the condition 0.4 < f / (|R5|+|R6|) < 1, where f is the total effective focal length of the optical imaging lens, R5 is the radius of curvature of the object-side surface of the third lens, and R6 is the radius of curvature of the image-side surface of the third lens. More specifically, f, R5, and R6 can further satisfy 0.47 ≤ f / (|R5|+|R6|) ≤ 0.82. Reasonably allocating the total effective focal length of the lens and the radii of curvature of the object-side and image-side surfaces of the third lens is beneficial for: 1. Enabling the system to have better chromatic aberration correction capability; 2. Reducing system sensitivity and effectively avoiding a series of processing problems caused by poor manufacturability of the third lens; 3. Maintaining the ultra-thin characteristics of the imaging lens.

[0074] In an exemplary embodiment, the optical imaging lens of this application can satisfy the condition 0.2 < R11 / R12 < 1.2, where R11 is the radius of curvature of the object-side surface of the sixth lens, and R12 is the radius of curvature of the image-side surface of the sixth lens. More specifically, R11 and R12 can further satisfy 0.26 ≤ R11 / R12 ≤ 1.17. By rationally allocating the radii of curvature of the object-side and image-side surfaces of the sixth lens, astigmatism and coma between the sixth lens and its preceding lenses can be effectively balanced, allowing the lens to maintain better imaging quality.

[0075] In an exemplary embodiment, the optical imaging lens of this application can satisfy the condition -1.4 < R15 / R16 < -0.2, where R15 is the radius of curvature of the object-side surface of the eighth lens, and R16 is the radius of curvature of the image-side surface of the eighth lens. More specifically, R15 and R16 can further satisfy -1.26 ≤ R15 / R16 ≤ -0.26. Reasonably allocating the radii of curvature of the object-side and image-side surfaces of the eighth lens can effectively balance the astigmatism and coma between the eighth lens and its preceding lenses. Combined with the condition 0.2 < R11 / R12 < 1.2, the lens can maintain better imaging quality and is beneficial for improving the image height of the imaging lens on the imaging plane.

[0076] In an exemplary embodiment, the optical imaging lens of this application satisfies the condition |f / f5|+|f / f7|<0.5, where f is the total effective focal length of the optical imaging lens, f5 is the effective focal length of the fifth lens, and f7 is the effective focal length of the seventh lens. More specifically, f, f5, and f7 can further satisfy 0<|f / f5|+|f / f7|<0.5, for example, 0.09≤|f / f5|+|f / f7|≤0.46. By rationally allocating the total effective focal length of the imaging lens and the effective focal lengths of the fifth and seventh lenses, the size of the imaging lens can be effectively shortened, and the ultra-thin characteristics of the imaging lens can be maintained while avoiding excessive concentration of system optical power. Simultaneously, in conjunction with the first four lenses, system aberrations can be better corrected.

[0077] In an exemplary embodiment, the optical imaging lens of this application can satisfy condition 1 < CT3 / TTL*10 < 1.5, where CT3 is the center thickness of the third lens on the optical axis, and TTL is the distance on the optical axis from the object side of the first lens to the imaging surface of the optical imaging lens. More specifically, CT3 and TTL can further satisfy 1.05 ≤ CT3 / TTL*10 ≤ 1.37. Reasonably controlling the center thickness of the third lens helps maintain the miniaturization of the system and reduces the risk of ghosting caused by the third lens. The third lens satisfying condition 1 < CT3 / TTL*10 < 1.5, when used in conjunction with the first two lenses, can effectively reduce chromatic aberration in the system, while avoiding manufacturing difficulties caused by an excessively thin third lens.

[0078] In an exemplary embodiment, the optical imaging lens of this application can satisfy the condition 0 < f / R13 < 0.5, where f is the total effective focal length of the optical imaging lens and R13 is the radius of curvature of the object-side surface of the seventh lens. More specifically, f and R13 can further satisfy 0.20 ≤ f / R13 ≤ 0.43. Reasonably controlling the ratio between the total effective focal length of the system and the radius of curvature of the image-side surface of the seventh lens allows the system to maintain miniaturization while possessing high aberration correction capability, and also enables the lens to achieve better manufacturability.

[0079] In an exemplary embodiment, the optical imaging lens of this application can satisfy the condition 0.5 < CT8 / (CT6+CT7) < 1.5, where CT6 is the center thickness of the sixth lens on the optical axis, CT7 is the center thickness of the seventh lens on the optical axis, and CT8 is the center thickness of the eighth lens on the optical axis. More specifically, CT6, CT7, and CT8 can further satisfy 0.51 ≤ CT8 / (CT6+CT7) ≤ 1.38. Reasonably controlling the center thicknesses of the sixth, seventh, and eighth lenses is beneficial for: 1. enabling the imaging lens to better balance system chromatic aberration and effectively control lens distortion; 2. avoiding processing difficulties caused by an excessively thin eighth lens; and 3. reducing the system size while maintaining the ultra-thin characteristics of the imaging lens.

[0080] In an exemplary embodiment, the optical imaging lens of this application can satisfy the condition 0.6 < T67 / (T12+T45) < 1.1, where T12 is the distance between the first and second lenses on the optical axis, T45 is the distance between the fourth and fifth lenses on the optical axis, and T67 is the distance between the sixth and seventh lenses on the optical axis. More specifically, T12, T45, and T67 can further satisfy 0.72 ≤ T67 / (T12+T45) ≤ 1.04. Reasonably controlling T12, T45, and T67 helps to reduce the risk of ghosting caused by the sixth and seventh lenses; at the same time, it helps to reduce the size of the system and maintain the ultra-thin characteristics of the imaging lens.

[0081] In an exemplary embodiment, the optical imaging lens of this application can satisfy the condition 0.6 < R1 / R4 < 1, where R1 is the radius of curvature of the object-side surface of the first lens and R4 is the radius of curvature of the image-side surface of the second lens. More specifically, R1 and R4 can further satisfy 0.85 ≤ R1 / R4 ≤ 0.96. Reasonably controlling the radii of curvature of the object-side surface of the first lens and the image-side surface of the second lens can effectively control the spherical aberration contribution of the object-side surface of the first lens and the image-side surface of the second lens to a reasonable level, while also improving the manufacturability of the first and second lenses.

[0082] In an exemplary embodiment, the optical imaging lens of this application can satisfy the condition 0.5 < R2 / R3 < 0.9, where R2 is the radius of curvature of the image-side surface of the first lens and R3 is the radius of curvature of the object-side surface of the second lens. More specifically, R2 and R3 can further satisfy 0.55 ≤ R2 / R3 ≤ 0.75. Reasonably controlling the radii of curvature of the image-side surface of the first lens and the object-side surface of the second lens can effectively reduce the size of the system, allowing for a reasonable distribution of the system's optical power without excessive concentration on the first lens; simultaneously, it facilitates aberration correction for subsequent lenses.

[0083] In an exemplary embodiment, the optical imaging lens of this application can satisfy the condition TTL / ImgH≤1.6, where TTL is the distance on the optical axis from the object-side surface of the first lens to the imaging surface of the optical imaging lens, and ImgH is half the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens. More specifically, TTL and ImgH can further satisfy 1.54≤TTL / ImgH≤1.60. Satisfying the condition TTL / ImgH≤1.6 can effectively shorten the overall size of the lens, achieving ultra-thin characteristics and miniaturization, thereby making the imaging lens better suited for the increasing number of ultra-thin electronic products on the market.

[0084] In an exemplary embodiment, the optical imaging lens may further include an aperture stop to improve the image quality of the lens. The aperture stop can be positioned at any location as needed; for example, the aperture stop can be positioned between the object side and the first lens.

[0085] Optionally, the aforementioned optical imaging lens may also 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 this application can employ multiple lenses, such as the eight lenses described above. By rationally allocating the optical power, surface shape, center thickness of each lens, and on-axis spacing between each lens, the size of the imaging lens can be effectively reduced, the sensitivity of the imaging lens can be decreased, and the manufacturability of the imaging lens can be improved, making the optical imaging lens more conducive to manufacturing and suitable for portable electronic products. Simultaneously, the optical imaging lens configured as described above also has beneficial effects such as large aperture, low sensitivity, and high image quality. This eight-element optical imaging lens has superior performance indicators and a smaller size compared to similar seven-element or six-element lenses.

[0087] In the embodiments of this application, at least one of the mirror surfaces of each lens is an aspherical mirror surface. An aspherical lens is characterized by a continuously changing curvature from the lens center to the lens periphery. Unlike a spherical lens, which has a constant curvature from the lens center to the lens periphery, an aspherical lens has superior curvature radius characteristics, offering advantages in improving distortion aberrations and astigmatism. By using an aspherical lens, aberrations occurring during imaging can be eliminated as much as possible, thereby improving image quality.

[0088] However, those skilled in the art will understand that the number of lenses constituting the optical imaging lens can be varied to obtain the various results and advantages described herein without departing from the technical solutions claimed in this application. 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 desired, the optical imaging lens may also include other numbers of lenses.

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

[0090] Example 1

[0091] The following is for reference Figures 1 to 2D Describes an optical imaging lens according to Embodiment 1 of this application. Figure 1 A schematic diagram of the structure of an optical imaging lens according to Embodiment 1 of this application is shown.

[0092] like Figure 1As shown, the optical imaging lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: aperture stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8, filter E9, and imaging surface S19.

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

[0094] Table 1 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens in the optical imaging lens of Example 1, wherein the units for radius of curvature and thickness are millimeters (mm).

[0095]

[0096] Table 1

[0097] As shown in Table 1, the object-side surface and image-side surface of any one of the lenses, from the first lens E1 to the eighth lens E8, are aspherical. In this embodiment, the surface shape x of each aspherical lens can be defined using, but is not limited to, the following aspherical formula:

[0098]

[0099] Where x is the distance vector from the vertex of the aspherical surface at a height of h along the optical axis; 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 (given in Table 1); Ai is the i-th order correction coefficient of the aspherical surface. Table 2 below gives the higher-order coefficients A4, A6, A8, A16, A26, A36 that can be used for each aspherical mirror S1-S16 in Example 1. 10 A 12 A 14 A 16 A 18and A 20 .

[0100] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -4.9600E-03 2.1437E-02 -9.1170E-02 2.0832E-01 -2.6042E-01 1.5664E-01 -1.1700E-02 -3.1900E-02 1.0755E-02 S2 -4.8600E-03 -6.3840E-02 3.3362E-01 -1.0365E+00 1.9685E+00 -2.3306E+00 1.6749E+00 -6.6924E-01 1.1372E-01 S3 -1.5760E-01 9.2780E-02 -3.0708E-01 9.0286E-01 -1.7928E+00 2.2317E+00 -1.6795E+00 6.9622E-01 -1.2183E-01 S4 -1.3614E-01 1.0662E-01 -2.5104E-01 6.1429E-01 -1.0660E+00 1.1772E+00 -7.8097E-01 2.8304E-01 -4.3040E-02 S5 -3.0620E-02 3.6846E-02 -1.8099E-01 4.7987E-01 -8.0074E-01 8.3480E-01 -5.1878E-01 1.7537E-01 -2.4860E-02 S6 -4.1600E-03 6.0993E-02 -1.6577E-01 2.5584E-01 -2.4279E-01 1.3968E-01 -4.4320E-02 6.2180E-03 -1.6000E-04 S7 2.0573E-02 2.2371E-01 -6.6965E-01 1.1560E+00 -1.2740E+00 9.1174E-01 -4.1029E-01 1.0515E-01 -1.1660E-02 S8 -2.5540E-02 1.9270E-01 -5.2534E-01 8.0554E-01 -7.8562E-01 4.9656E-01 -1.9585E-01 4.3469E-02 -4.1100E-03 S9 -4.4770E-02 7.5220E-03 8.7639E-02 -3.1189E-01 4.8735E-01 -4.2490E-01 2.1557E-01 -5.9600E-02 6.9340E-03 S10 -7.2010E-02 -4.0690E-02 2.0693E-01 -3.9287E-01 4.5110E-01 -3.1758E-01 1.3424E-01 -3.1390E-02 3.1300E-03 S11 -7.9660E-02 -1.5410E-02 6.1146E-02 -8.7370E-02 7.7896E-02 -4.2470E-02 1.3423E-02 -2.2300E-03 1.5200E-04 S12 -6.5590E-02 1.3905E-02 -2.4320E-02 3.0914E-02 -2.6010E-02 1.4738E-02 -5.3500E-03 1.1060E-03 -9.7000E-05 S13 -1.1504E-01 -2.0610E-02 5.9150E-03 2.1906E-02 -3.1790E-02 2.2050E-02 -8.4000E-03 1.6370E-03 -1.2000E-04 S14 -2.0690E-02 -4.9950E-02 5.3802E-02 -2.4470E-02 -9.6000E-04 5.9270E-03 -2.6100E-03 4.9400E-04 -3.6000E-05 S15 3.1357E-02 -2.5610E-02 1.8198E-02 5.3400E-04 -1.1460E-02 7.9090E-03 -2.4800E-03 3.8400E-04 -2.3000E-05 S16 8.3400E-04 -1.6800E-02 1.0575E-02 -3.8000E-03 8.4900E-04 -1.2000E-04 1.1000E-05 -5.8000E-07 1.3100E-08

[0101] Table 2

[0102] Table 3 shows the effective focal lengths f1 to f8 of each lens in Example 1, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the object side surface S1 to the imaging surface S19 of the first lens E1, and half the diagonal length ImgH of the effective pixel area on the imaging surface S19.

[0103] f1(mm) 6.12 f7 (mm) 31.76 f2 (mm) -5.06 f8(mm) -2.90 f3 (mm) 2.19 f(mm) 4.33 f4 (mm) -5.15 TTL(mm) 5.65 f5 (mm) -13.55 ImgH(mm) 3.54 f6 (mm) 7.45

[0104] Table 3

[0105] The optical imaging lens in Example 1 satisfies:

[0106] f / EPD = 1.98, where f is the total effective focal length of the optical imaging lens and EPD is the entrance pupil diameter of the optical imaging lens;

[0107] f1 / f3 = 2.79, where f1 is the effective focal length of the first lens E1 and f3 is the effective focal length of the third lens E3;

[0108] f2 / f8 = 1.74, where f2 is the effective focal length of the second lens E2 and f8 is the effective focal length of the eighth lens E8;

[0109] f / (|R5|+|R6|)=0.71, where f is the total effective focal length of the optical imaging lens, R5 is the radius of curvature of the object side surface S5 of the third lens E3, and R6 is the radius of curvature of the image side surface S6 of the third lens E3.

[0110] R11 / R12 = 0.36, where R11 is the radius of curvature of the object side surface S11 of the sixth lens E6, and R12 is the radius of curvature of the image side surface S12 of the sixth lens E6.

[0111] R15 / R16=-0.26, where R15 is the radius of curvature of the object side surface S15 of the eighth lens E8, and R16 is the radius of curvature of the image side surface S16 of the eighth lens E8.

[0112] |f / f5|+|f / f7|=0.46, where f is the total effective focal length of the optical imaging lens, f5 is the effective focal length of the fifth lens E5, and f7 is the effective focal length of the seventh lens E7;

[0113] CT3 / TTL*10=1.29, where CT3 is the center thickness of the third lens E3 on the optical axis, and TTL is the distance on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S19.

[0114] f / R13 = 0.23, where f is the total effective focal length of the optical imaging lens and R13 is the radius of curvature of the object side surface S13 of the seventh lens E7.

[0115] CT8 / (CT6+CT7)=1.38, where CT6 is the center thickness of the sixth lens E6 on the optical axis, CT7 is the center thickness of the seventh lens E7 on the optical axis, and CT8 is the center thickness of the eighth lens E8 on the optical axis.

[0116] T67 / (T12+T45)=0.72, where T12 is the distance between the first lens E1 and the second lens E2 on the optical axis, T45 is the distance between the fourth lens E4 and the fifth lens E5 on the optical axis, and T67 is the distance between the sixth lens E6 and the seventh lens E7 on the optical axis.

[0117] R1 / R4 = 0.89, where R1 is the radius of curvature of the object side surface S1 of the first lens E1, and R4 is the radius of curvature of the image side surface S4 of the second lens E2.

[0118] R2 / R3 = 0.75, where R2 is the radius of curvature of the image-side surface S2 of the first lens E1, and R3 is the radius of curvature of the object-side surface S3 of the second lens E2.

[0119] TTL / ImgH = 1.60, where TTL is the distance on the optical axis from the object side S1 of the first lens E1 to the imaging surface S19, and ImgH is half the diagonal length of the effective pixel area on the imaging surface S19.

[0120] Figure 2A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 1 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 2B The astigmatism curve of the optical imaging lens of Embodiment 1 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 2C The distortion curve of the optical imaging lens of Example 1 is shown, which represents the distortion magnitude value corresponding to different image heights. Figure 2D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 1 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to Figures 2A to 2D It can be seen that the optical imaging lens given in Example 1 can achieve good imaging quality.

[0121] Example 2

[0122] The following is for reference Figures 3 to 4D This paper describes an optical imaging lens according to Embodiment 2 of this application. For the sake of brevity, descriptions similar to those in Embodiment 1 will be omitted in this embodiment and the following embodiments. Figure 3 A schematic diagram of the structure of an optical imaging lens according to Embodiment 2 of this application is shown.

[0123] like Figure 3 As shown, the optical imaging lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: aperture stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8, filter E9, and imaging surface S19.

[0124] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being concave and its image-side surface S8 being concave. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The eighth lens E8 has negative optical power, with its object-side surface S15 being concave and its image-side surface S16 being concave. The filter E9 has an object-side surface S17 and an image-side surface S18. Light from the object passes sequentially through each surface S1 to S18 and is finally imaged onto the imaging surface S19.

[0125] Table 4 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens in the optical imaging lens of Example 2, wherein the units for radius of curvature and thickness are millimeters (mm).

[0126]

[0127] Table 4

[0128] As shown in Table 4, in Embodiment 2, the object-side surface and image-side surface of any one of the lenses from the first lens E1 to the eighth lens E8 are aspherical. Table 5 shows the higher-order coefficients that can be used for each aspherical mirror surface in Embodiment 2, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0129]

[0130]

[0131] Table 5

[0132] Table 6 shows the effective focal lengths f1 to f8 of each lens in Example 2, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the object side surface S1 to the imaging surface S19 of the first lens E1, and half the diagonal length ImgH of the effective pixel area on the imaging surface S19.

[0133] f1(mm) 6.27 f7 (mm) -100.00 f2 (mm) -4.67 f8(mm) -3.13 f3 (mm) 2.13 f(mm) 4.32 f4 (mm) -5.69 TTL(mm) 5.62 f5 (mm) -11.09 ImgH(mm) 3.54 f6 (mm) 6.74

[0134] Table 6

[0135] Figure 4A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 2 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 4B The astigmatism curve of the optical imaging lens of Embodiment 2 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 4C The distortion curve of the optical imaging lens of Embodiment 2 is shown, which represents the distortion magnitude value corresponding to different image heights. Figure 4D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 2 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to Figures 4A to 4D It can be seen that the optical imaging lens given in Example 2 can achieve good imaging quality.

[0136] Example 3

[0137] The following is for reference Figures 5 to 6D An optical imaging lens according to Embodiment 3 of this application is described. Figure 5 A schematic diagram of the structure of an optical imaging lens according to Embodiment 3 of this application is shown.

[0138] like Figure 5 As shown, the optical imaging lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: aperture stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8, filter E9, and imaging surface S19.

[0139] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being concave and its image-side surface S8 being concave. The fifth lens E5 has positive optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The eighth lens E8 has negative optical power, with its object-side surface S15 being concave and its image-side surface S16 being concave. The filter E9 has an object-side surface S17 and an image-side surface S18. Light from the object passes sequentially through each surface S1 to S18 and is finally imaged onto the imaging surface S19.

[0140] Table 7 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens in the optical imaging lens of Example 3, wherein the units for radius of curvature and thickness are millimeters (mm).

[0141]

[0142] Table 7

[0143] As shown in Table 7, in Embodiment 3, the object-side surface and image-side surface of any one of the lenses from the first lens E1 to the eighth lens E8 are aspherical. Table 8 shows the higher-order coefficients that can be used for each aspherical mirror surface in Embodiment 3, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0144] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -6.6300E-03 3.7376E-02 -1.6625E-01 4.2843E-01 -6.8005E-01 6.7893E-01 -4.1545E-01 1.4333E-01 -2.1560E-02 S2 -2.2400E-03 -5.7370E-02 2.5158E-01 -7.0279E-01 1.1945E+00 -1.2427E+00 7.6899E-01 -2.5733E-01 3.4890E-02 S3 -1.5975E-01 1.4355E-01 -4.8251E-01 1.1354E+00 -1.7293E+00 1.7014E+00 -1.0488E+00 3.6901E-01 -5.6930E-02 S4 -1.4867E-01 2.0288E-01 -5.0498E-01 8.5866E-01 -9.7483E-01 7.2540E-01 -3.3539E-01 8.6315E-02 -9.3400E-03 S5 -3.7400E-02 1.0868E-01 -2.8366E-01 4.3967E-01 -4.8149E-01 3.6972E-01 -1.8533E-01 5.4625E-02 -7.3000E-03 S6 -2.3700E-03 6.8840E-02 -1.5371E-01 2.1006E-01 -1.9621E-01 1.3274E-01 -6.4080E-02 2.0559E-02 -3.2800E-03 S7 6.8360E-03 2.5158E-01 -6.7387E-01 1.0620E+00 -1.1319E+00 8.2160E-01 -3.8128E-01 1.0072E-01 -1.1500E-02 S8 -5.7920E-02 2.5121E-01 -6.0201E-01 9.1628E-01 -9.4198E-01 6.4539E-01 -2.7973E-01 6.9738E-02 -7.7600E-03 S9 -8.2060E-02 1.4499E-01 -2.9749E-01 3.1735E-01 -9.2420E-02 -1.2949E-01 1.3866E-01 -5.2230E-02 7.1490E-03 S10 -9.9170E-02 2.0025E-01 -4.0021E-01 4.2298E-01 -1.6397E-01 -7.5870E-02 1.0348E-01 -3.9720E-02 5.4730E-03 S11 -8.7220E-02 1.3322E-01 -1.9976E-01 1.6307E-01 -6.4960E-02 2.9490E-03 7.5830E-03 -2.6700E-03 2.8700E-04 S12 -7.2210E-02 4.6012E-02 -2.0940E-02 -3.2830E-02 5.3785E-02 -3.4990E-02 1.1883E-02 -2.0200E-03 1.2800E-04 S13 -1.0733E-01 -5.3790E-02 2.7506E-02 3.8067E-02 -7.7810E-02 6.2780E-02 -2.6970E-02 5.9900E-03 -5.3000E-04 S14 -7.2100E-03 -8.8470E-02 8.4931E-02 -4.3790E-02 1.0862E-02 -1.5000E-04 -5.8000E-04 1.2100E-04 -7.4000E-06 S15 1.7401E-02 -4.3600E-03 -6.7500E-03 1.5568E-02 -1.4860E-02 7.0850E-03 -1.8100E-03 2.3700E-04 -1.2000E-05 S16 -2.8170E-02 7.3610E-03 2.1400E-04 -1.0500E-03 3.8100E-04 -7.1000E-05 7.5000E-06 -4.3000E-07 1.0400E-08

[0145] Table 8

[0146] Table 9 shows the effective focal lengths f1 to f8 of each lens in Example 3, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the object side surface S1 to the imaging surface S19 of the first lens E1, and half the diagonal length ImgH of the effective pixel area on the imaging surface S19.

[0147] f1(mm) 6.24 f7 (mm) -99.99 f2 (mm) -4.41 f8(mm) -3.21 f3 (mm) 2.17 f(mm) 4.33 f4 (mm) -4.81 TTL(mm) 5.60 f5 (mm) 100.00 ImgH(mm) 3.54 f6 (mm) 11.79

[0148] Table 9

[0149] Figure 6A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 3 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 6B The astigmatism curve of the optical imaging lens of Embodiment 3 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 6C The distortion curve of the optical imaging lens of Example 3 is shown, which represents the distortion magnitude value corresponding to different image heights. Figure 6D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 3 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to Figures 6A to 6D It can be seen that the optical imaging lens given in Example 3 can achieve good imaging quality.

[0150] Example 4

[0151] The following is for reference Figures 7 to 8D An optical imaging lens according to Embodiment 4 of this application is described. Figure 7 A schematic diagram of the structure of an optical imaging lens according to Embodiment 4 of this application is shown.

[0152] like Figure 7 As shown, the optical imaging lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: aperture stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8, filter E9, and imaging surface S19.

[0153] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being concave and its image-side surface S8 being concave. The fifth lens E5 has positive optical power, with its object-side surface S9 being convex and its image-side surface S10 being convex. The sixth lens E6 has negative optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The eighth lens E8 has negative optical power, with its object-side surface S15 being concave and its image-side surface S16 being concave. The filter E9 has an object-side surface S17 and an image-side surface S18. Light from the object passes sequentially through each surface S1 to S18 and is finally imaged onto the imaging surface S19.

[0154] Table 10 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens in the optical imaging lens of Example 4, wherein the units for radius of curvature and thickness are millimeters (mm).

[0155]

[0156]

[0157] Table 10

[0158] As shown in Table 10, in Embodiment 4, the object-side surface and image-side surface of any one of the lenses from the first lens E1 to the eighth lens E8 are aspherical. Table 11 shows the higher-order coefficients that can be used for each aspherical mirror in Embodiment 4, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0159] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -4.7300E-03 2.2361E-02 -9.5210E-02 2.2249E-01 -3.1815E-01 2.8612E-01 -1.5793E-01 4.9550E-02 -6.9000E-03 S2 1.5970E-03 -5.0480E-02 1.9385E-01 -5.1966E-01 8.6051E-01 -8.7880E-01 5.3768E-01 -1.7941E-01 2.4536E-02 S3 -1.3740E-01 8.1845E-02 -2.4888E-01 5.5580E-01 -8.1434E-01 7.8067E-01 -4.7410E-01 1.6521E-01 -2.5310E-02 S4 -1.2689E-01 1.1208E-01 -2.2081E-01 2.9061E-01 -2.7099E-01 1.8195E-01 -8.1170E-02 2.0562E-02 -2.1400E-03 S5 -2.7240E-02 5.8265E-02 -1.3044E-01 1.6794E-01 -1.8659E-01 1.6703E-01 -9.6910E-02 3.1562E-02 -4.4800E-03 S6 1.0964E-02 2.4920E-02 -8.4220E-02 1.3750E-01 -1.4049E-01 9.4219E-02 -3.9060E-02 9.7500E-03 -1.3000E-03 S7 2.7435E-02 1.2590E-01 -3.7040E-01 6.2299E-01 -7.4198E-01 6.1054E-01 -3.1446E-01 8.9934E-02 -1.0920E-02 S8 -3.8180E-02 1.3967E-01 -3.0864E-01 4.9374E-01 -5.9894E-01 4.9874E-01 -2.6046E-01 7.7673E-02 -1.0330E-02 S9 -7.9930E-02 1.7226E-02 -5.8300E-03 -3.8830E-02 1.8888E-01 -3.1311E-01 2.3983E-01 -8.6990E-02 1.2039E-02 S10 -6.5100E-03 -7.7920E-02 7.7234E-02 -8.4050E-02 1.9590E-01 -2.7706E-01 1.9821E-01 -6.9650E-02 9.6650E-03 S11 2.2701E-02 -7.6050E-02 1.6134E-02 4.3773E-02 -6.2670E-02 4.5418E-02 -2.1610E-02 6.4490E-03 -8.8000E-04 S12 -3.0920E-02 -1.4540E-02 -2.5900E-03 3.7470E-03 -2.5500E-03 2.3100E-03 -1.7500E-03 6.4900E-04 -8.9000E-05 S13 -1.1346E-01 -4.7770E-02 1.3424E-02 4.0264E-02 -6.7070E-02 5.0497E-02 -2.0570E-02 4.2950E-03 -3.5000E-04 S14 -1.5070E-02 -7.7310E-02 7.0605E-02 -2.9090E-02 2.3400E-03 2.7500E-03 -1.1600E-03 1.8700E-04 -1.1000E-05 S15 1.4190E-02 -3.8000E-04 -3.9000E-04 3.5870E-03 -5.3300E-03 2.8720E-03 -7.5000E-04 9.4400E-05 -4.4000E-06 S16 -3.5100E-02 1.8336E-02 -7.0800E-03 1.6600E-03 -2.3000E-04 1.5100E-05 3.2900E-09 -5.7000E-08 2.3400E-09

[0160] Table 11

[0161] Table 12 shows the effective focal lengths f1 to f8 of each lens in Example 4, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the object side surface S1 to the imaging surface S19 of the first lens E1, and half the diagonal length ImgH of the effective pixel area on the imaging surface S19.

[0162] f1(mm) 5.93 f7 (mm) -96.10 f2 (mm) -4.31 f8(mm) -3.41 f3 (mm) 2.33 f(mm) 4.36 f4 (mm) -8.08 TTL(mm) 5.58 f5 (mm) 29.56 ImgH(mm) 3.54 f6 (mm) -100.00

[0163] Table 12

[0164] Figure 8A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 4 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 8B The astigmatism curve of the optical imaging lens of Embodiment 4 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 8C The distortion curve of the optical imaging lens of Example 4 is shown, which represents the distortion magnitude value corresponding to different image heights. Figure 8D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 4 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to Figures 8A to 8D It can be seen that the optical imaging lens given in Example 4 can achieve good imaging quality.

[0165] Example 5

[0166] The following is for reference Figures 9 to 10D An optical imaging lens according to Embodiment 5 of this application is described. Figure 9 A schematic diagram of the structure of an optical imaging lens according to Embodiment 5 of this application is shown.

[0167] like Figure 9 As shown, the optical imaging lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: aperture stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8, filter E9, and imaging surface S19.

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

[0169] Table 13 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 5, wherein the units of radius of curvature and thickness are millimeters (mm).

[0170]

[0171]

[0172] Table 13

[0173] As shown in Table 13, in Embodiment 5, the object-side surface and image-side surface of any one of the lenses from the first lens E1 to the eighth lens E8 are aspherical. Table 14 shows the higher-order coefficients that can be used for each aspherical mirror surface in Embodiment 5, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0174] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -3.2300E-03 7.6900E-03 -3.0040E-02 4.8017E-02 -3.4720E-02 -9.2000E-04 1.9005E-02 -1.1450E-02 2.1760E-03 S2 2.5980E-03 -5.3790E-02 2.0824E-01 -5.7022E-01 9.6167E-01 -1.0030E+00 6.3075E-01 -2.1861E-01 3.1781E-02 S3 -1.2796E-01 5.2307E-02 -1.0483E-01 1.5917E-01 -1.3795E-01 5.5052E-02 2.3960E-03 -9.9400E-03 2.3680E-03 S4 -1.2018E-01 8.7654E-02 -1.3956E-01 1.0754E-01 -1.0400E-03 -6.9030E-02 5.9003E-02 -2.2150E-02 3.2990E-03 S5 -2.0100E-02 4.0130E-02 -7.7180E-02 4.4723E-02 1.2350E-03 -1.1180E-02 3.3380E-03 8.5700E-04 -4.8000E-04 S6 2.1327E-02 -9.1000E-03 -2.0160E-02 4.9592E-02 -6.3990E-02 5.6768E-02 -3.1840E-02 1.0591E-02 -1.6400E-03 S7 3.3113E-02 5.6293E-02 -1.7088E-01 2.4903E-01 -2.8336E-01 2.4463E-01 -1.3213E-01 3.8690E-02 -4.7200E-03 S8 -3.3700E-02 1.0139E-01 -1.8528E-01 2.7378E-01 -3.6372E-01 3.4434E-01 -2.0150E-01 6.6051E-02 -9.4500E-03 S9 -6.5260E-02 -5.9520E-02 1.3234E-01 -1.5431E-01 1.6922E-01 -1.7991E-01 1.1965E-01 -3.9250E-02 4.7390E-03 S10 2.6984E-02 -1.9846E-01 2.9751E-01 -3.0564E-01 2.8418E-01 -2.3501E-01 1.3525E-01 -4.3170E-02 5.7060E-03 S11 4.6022E-02 -1.3454E-01 1.0837E-01 -3.0790E-02 -4.7960E-02 6.9427E-02 -4.3080E-02 1.3681E-02 -1.7900E-03 S12 -1.9500E-02 -3.2260E-02 2.2033E-02 -1.3650E-02 2.4510E-03 3.2140E-03 -2.8500E-03 9.3700E-04 -1.1000E-04 S13 -1.0297E-01 -3.7780E-02 -4.2150E-02 1.2237E-01 -1.3531E-01 8.6357E-02 -3.2300E-02 6.4000E-03 -5.0000E-04 S14 -1.1520E-02 -7.1400E-02 5.3947E-02 -1.2480E-02 -6.3800E-03 5.4270E-03 -1.6500E-03 2.3600E-04 -1.3000E-05 S15 1.0585E-02 2.7630E-03 1.0237E-02 -1.3590E-02 6.6590E-03 -1.8200E-03 3.1400E-04 -3.6000E-05 2.2500E-06 S16 -4.1830E-02 2.3348E-02 -9.3600E-03 2.3580E-03 -3.8000E-04 3.7200E-05 -2.2000E-06 6.6700E-08 -7.3000E-10

[0175] Table 14

[0176] Table 15 shows the effective focal lengths f1 to f8 of each lens in Example 5, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the object side surface S1 to the imaging surface S19 of the first lens E1, and half the diagonal length ImgH of the effective pixel area on the imaging surface S19.

[0177] f1(mm) 5.89 f7 (mm) 100.00 f2 (mm) -4.37 f8(mm) -3.16 f3 (mm) 2.45 f(mm) 4.35 f4 (mm) -10.21 TTL(mm) 5.56 f5 (mm) 38.34 ImgH(mm) 3.54 f6 (mm) -100.00

[0178] Table 15

[0179] Figure 10A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 5 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 10BThe astigmatism curve of the optical imaging lens of Embodiment 5 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 10C The distortion curve of the optical imaging lens of Example 5 is shown, which represents the distortion magnitude value corresponding to different image heights. Figure 10D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 5 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to Figures 10A to 10D It can be seen that the optical imaging lens given in Example 5 can achieve good imaging quality.

[0180] Example 6

[0181] The following is for reference Figures 11 to 12D An optical imaging lens according to Embodiment 6 of this application is described. Figure 11 A schematic diagram of the structure of an optical imaging lens according to Embodiment 6 of this application is shown.

[0182] like Figure 11 As shown, the optical imaging lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: aperture stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8, filter E9, and imaging surface S19.

[0183] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has positive optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The eighth lens E8 has negative optical power, with its object-side surface S15 being concave and its image-side surface S16 being concave. The filter E9 has an object-side surface S17 and an image-side surface S18. Light from the object passes sequentially through each surface S1 to S18 and is finally imaged onto the imaging surface S19.

[0184] Table 16 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 6, wherein the units of radius of curvature and thickness are millimeters (mm).

[0185]

[0186] Table 16

[0187] As shown in Table 16, in Embodiment 6, the object-side surface and image-side surface of any one of the lenses from the first lens E1 to the eighth lens E8 are aspherical. Table 17 shows the higher-order coefficients that can be used for each aspherical mirror in Embodiment 6, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0188]

[0189]

[0190] Table 17

[0191] Table 18 gives the effective focal lengths f1 to f8 of each lens in Example 6, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the object side surface S1 to the imaging surface S19 of the first lens E1, and half the diagonal length ImgH of the effective pixel area on the imaging surface S19.

[0192] f1(mm) 5.91 f7 (mm) 100.00 f2 (mm) -4.44 f8(mm) -3.16 f3 (mm) 2.50 f(mm) 4.33 f4 (mm) -10.76 TTL(mm) 5.54 f5 (mm) 100.00 ImgH(mm) 3.54 f6 (mm) 100.00

[0193] Table 18

[0194] Figure 12A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 6 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 12B The astigmatism curve of the optical imaging lens of Embodiment 6 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 12C The distortion curve of the optical imaging lens of Example 6 is shown, which represents the distortion magnitude value corresponding to different image heights. Figure 12D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 6 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to Figures 12A to 12D It can be seen that the optical imaging lens given in Example 6 can achieve good imaging quality.

[0195] Example 7

[0196] The following is for reference Figures 13 to 14D An optical imaging lens according to Embodiment 7 of this application is described. Figure 13 A schematic diagram of the structure of an optical imaging lens according to Embodiment 7 of this application is shown.

[0197] like Figure 13 As shown, the optical imaging lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: aperture stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8, filter E9, and imaging surface S19.

[0198] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has negative optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The eighth lens E8 has negative optical power, with its object-side surface S15 being concave and its image-side surface S16 being concave. The filter E9 has an object-side surface S17 and an image-side surface S18. Light from the object passes sequentially through each surface S1 to S18 and is finally imaged onto the imaging surface S19.

[0199] Table 19 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens in the optical imaging lens of Example 7, wherein the units for radius of curvature and thickness are millimeters (mm).

[0200]

[0201] Table 19

[0202] As shown in Table 19, in Embodiment 7, the object-side surface and image-side surface of any one of the lenses from the first lens E1 to the eighth lens E8 are aspherical. Table 20 shows the higher-order coefficients that can be used for each aspherical mirror surface in Embodiment 7, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0203] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -4.7200E-03 2.8166E-02 -1.2541E-01 2.9298E-01 -4.2202E-01 3.8032E-01 -2.0935E-01 6.4618E-02 -8.6200E-03 S2 9.0960E-03 -6.8810E-02 2.3544E-01 -5.8251E-01 8.9366E-01 -8.5235E-01 4.9034E-01 -1.5485E-01 2.0289E-02 S3 -1.2034E-01 4.4984E-02 -1.0832E-01 2.0840E-01 -2.7720E-01 2.4882E-01 -1.4517E-01 4.9240E-02 -7.4700E-03 S4 -1.1619E-01 5.2040E-02 -3.8310E-02 -4.0380E-02 1.1454E-01 -1.0793E-01 5.4236E-02 -1.4970E-02 1.8260E-03 S5 -2.1510E-02 2.5560E-02 -4.7290E-02 3.8909E-02 -4.5230E-02 5.3096E-02 -3.4540E-02 1.1363E-02 -1.5500E-03 S6 2.2817E-02 -2.5880E-02 1.3575E-02 -8.0000E-04 -5.4800E-03 5.8570E-03 -2.3600E-03 7.0100E-04 -1.8000E-04 S7 4.5746E-02 2.7152E-02 -1.4358E-01 2.4370E-01 -2.9674E-01 2.5130E-01 -1.2750E-01 3.4401E-02 -3.8000E-03 S8 -2.0210E-02 7.6490E-02 -1.5827E-01 2.2489E-01 -2.7793E-01 2.4139E-01 -1.2771E-01 3.7917E-02 -5.0400E-03 S9 -6.5320E-02 -5.8050E-02 7.4371E-02 -7.3200E-03 -2.7700E-02 -1.8750E-02 4.1604E-02 -1.9760E-02 2.9650E-03 S10 3.3551E-02 -1.8646E-01 2.2319E-01 -1.6522E-01 1.2874E-01 -1.1816E-01 7.7190E-02 -2.6920E-02 3.8300E-03 S11 4.5194E-02 -1.0727E-01 4.0412E-02 6.0131E-02 -1.3412E-01 1.3092E-01 -7.3110E-02 2.2039E-02 -2.7700E-03 S12 -2.6770E-02 -1.6040E-02 -5.8300E-03 1.8770E-02 -2.8120E-02 2.4543E-02 -1.2460E-02 3.3420E-03 -3.7000E-04 S13 -1.0404E-01 -4.0000E-02 -5.2620E-02 1.3582E-01 -1.4620E-01 9.2138E-02 -3.4110E-02 6.6090E-03 -4.8000E-04 S14 -7.0800E-03 -6.7210E-02 4.5956E-02 -6.4400E-03 -8.3800E-03 5.5750E-03 -1.5700E-03 2.1500E-04 -1.2000E-05 S15 4.5500E-03 1.2548E-02 6.8320E-03 -1.5380E-02 9.0820E-03 -2.9400E-03 5.7900E-04 -6.8000E-05 3.6800E-06 S16 -4.5350E-02 2.5294E-02 -1.0430E-02 2.8430E-03 -5.2000E-04 6.2000E-05 -4.8000E-06 2.1200E-07 -4.1000E-09

[0204] Table 20

[0205] Table 21 gives the effective focal lengths f1 to f8 of each lens in Example 7, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the object side surface S1 to the imaging surface S19 of the first lens E1, and half the diagonal length ImgH of the effective pixel area on the imaging surface S19.

[0206] f1(mm) 5.90 f7 (mm) 100.00 f2 (mm) -4.44 f8(mm) -3.20 f3 (mm) 2.50 f(mm) 4.32 f4 (mm) -16.01 TTL(mm) 5.52 f5 (mm) -100.00 ImgH(mm) 3.54 f6 (mm) -100.00

[0207] Table 21

[0208] Figure 14A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 7 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 14BThe astigmatism curve of the optical imaging lens of Embodiment 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 value corresponding to different image heights. Figure 14D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 7 is shown, which represents the deviation of different image heights on the imaging plane after light passes 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.

[0209] Example 8

[0210] The following is for reference Figures 15 to 16D An optical imaging lens according to Embodiment 8 of this application is described. Figure 15 A schematic diagram of the structure of an optical imaging lens according to Embodiment 8 of this application is shown.

[0211] like Figure 15 As shown, the optical imaging lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: aperture stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8, filter E9, and imaging surface S19.

[0212] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has negative optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The eighth lens E8 has negative optical power, with its object-side surface S15 being concave and its image-side surface S16 being concave. The filter E9 has an object-side surface S17 and an image-side surface S18. Light from the object passes sequentially through each surface S1 to S18 and is finally imaged onto the imaging surface S19.

[0213] Table 22 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 8, wherein the units of radius of curvature and thickness are millimeters (mm).

[0214]

[0215]

[0216] Table 22

[0217] As shown in Table 22, in Embodiment 8, the object-side surface and image-side surface of any one of the lenses from the first lens E1 to the eighth lens E8 are aspherical. Table 23 shows the higher-order coefficients that can be used for each aspherical mirror surface in Embodiment 8, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0218] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -2.9600E-03 1.1522E-02 -5.1210E-02 1.0589E-01 -1.3487E-01 1.0593E-01 -5.0030E-02 1.3057E-02 -1.4400E-03 S2 5.6080E-03 -5.8290E-02 2.0735E-01 -5.2496E-01 8.1076E-01 -7.7667E-01 4.4953E-01 -1.4327E-01 1.9136E-02 S3 -1.2490E-01 6.8795E-02 -1.3081E-01 2.4470E-01 -3.6743E-01 3.8843E-01 -2.6232E-01 1.0017E-01 -1.6570E-02 S4 -1.2449E-01 7.7414E-02 -5.4190E-02 -5.4570E-02 1.5253E-01 -1.4538E-01 7.6793E-02 -2.3180E-02 3.1310E-03 S5 -1.6420E-02 1.8780E-02 -8.9400E-03 -5.2720E-02 8.2033E-02 -5.6490E-02 2.2815E-02 -5.0900E-03 3.6400E-04 S6 1.8668E-02 -5.6240E-02 9.7008E-02 -1.3160E-01 1.4181E-01 -1.1427E-01 6.2551E-02 -1.9140E-02 2.3190E-03 S7 6.0548E-02 -7.2400E-02 6.6073E-02 -5.4930E-02 2.0103E-02 2.4590E-03 3.0950E-03 -4.8900E-03 1.2480E-03 S8 1.1469E-02 -2.5220E-02 4.8696E-02 -1.2537E-01 1.8271E-01 -1.7928E-01 1.1401E-01 -4.0000E-02 5.6980E-03 S9 -5.2050E-02 -1.1854E-01 3.1185E-01 -5.1835E-01 6.2201E-01 -5.2390E-01 2.8202E-01 -8.5360E-02 1.0955E-02 S10 3.3380E-03 -2.1604E-01 4.4782E-01 -6.1094E-01 6.0606E-01 -4.2103E-01 1.9052E-01 -4.9850E-02 5.7360E-03 S11 1.9976E-02 -1.1531E-01 1.1981E-01 -6.1390E-02 -2.7700E-02 6.6158E-02 -4.4790E-02 1.4199E-02 -1.7800E-03 S12 -1.3650E-02 -3.6190E-02 2.8418E-02 -1.4620E-02 -2.9800E-03 8.7380E-03 -5.2100E-03 1.4030E-03 -1.5000E-04 S13 -7.9340E-02 -6.4480E-02 4.1891E-02 -4.3590E-02 4.9356E-02 -3.6320E-02 1.5807E-02 -3.8200E-03 4.0100E-04 S14 4.5250E-03 -5.6330E-02 3.3471E-02 -5.3000E-03 -3.8100E-03 2.4230E-03 -6.1000E-04 7.5700E-05 -3.7000E-06 S15 -4.9300E-03 1.8742E-02 1.3030E-03 -9.7800E-03 5.7500E-03 -1.7400E-03 3.1300E-04 -3.2000E-05 1.5000E-06 S16 -5.0610E-02 2.7456E-02 -1.0360E-02 2.6240E-03 -4.6000E-04 5.5500E-05 -4.5000E-06 2.1900E-07 -4.8000E-09

[0219] Table 23

[0220] Table 24 gives the effective focal lengths f1 to f8 of each lens in Example 8, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the object side surface S1 to the imaging surface S19 of the first lens E1, and half the diagonal length ImgH of the effective pixel area on the imaging surface S19.

[0221]

[0222]

[0223] Table 24

[0224] Figure 16A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 8 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 16B The astigmatism curve of the optical imaging lens of Embodiment 8 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 16C The distortion curve of the optical imaging lens of Example 8 is shown, which represents the distortion magnitude value corresponding to different image heights. Figure 16D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 8 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to Figures 16A to 16D It can be seen that the optical imaging lens given in Example 8 can achieve good imaging quality.

[0225] Example 9

[0226] The following is for reference Figures 17 to 18D An optical imaging lens according to Embodiment 9 of this application is described. Figure 17 A schematic diagram of the structure of an optical imaging lens according to Embodiment 9 of this application is shown.

[0227] like Figure 17As shown, the optical imaging lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: aperture stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8, filter E9, and imaging surface S19.

[0228] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The eighth lens E8 has negative optical power, with its object-side surface S15 being concave and its image-side surface S16 being concave. The filter E9 has an object-side surface S17 and an image-side surface S18. Light from the object passes sequentially through each surface S1 to S18 and is finally imaged onto the imaging surface S19.

[0229] Table 25 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 9, wherein the units for radius of curvature and thickness are millimeters (mm).

[0230]

[0231] Table 25

[0232] As shown in Table 25, in Embodiment 9, the object-side surface and image-side surface of any one of the lenses from the first lens E1 to the eighth lens E8 are aspherical. Table 26 shows the higher-order coefficients that can be used for each aspherical mirror surface in Embodiment 9, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0233]

[0234]

[0235] Table 26

[0236] Table 27 gives the effective focal lengths f1 to f8 of each lens in Example 9, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the object side surface S1 to the imaging surface S19 of the first lens E1, and half the diagonal length ImgH of the effective pixel area on the imaging surface S19.

[0237] f1(mm) 5.93 f7 (mm) 100.00 f2 (mm) -4.73 f8(mm) -3.29 f3 (mm) 3.18 f(mm) 4.26 f4 (mm) 64.26 TTL(mm) 5.48 f5 (mm) -22.00 ImgH(mm) 3.54 f6 (mm) 27.33

[0238] Table 27

[0239] Figure 18A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 9 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 18B The astigmatism curve of the optical imaging lens of Embodiment 9 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 18C The distortion curve of the optical imaging lens of Example 9 is shown, which represents the distortion magnitude value corresponding to different image heights. Figure 18D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 9 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to Figures 18A to 18D It can be seen that the optical imaging lens given in Example 9 can achieve good imaging quality.

[0240] Example 10

[0241] The following is for reference Figures 19 to 20D An optical imaging lens according to Embodiment 10 of this application is described. Figure 19 A schematic diagram of the structure of an optical imaging lens according to Embodiment 10 of this application is shown.

[0242] like Figure 19 As shown, the optical imaging lens according to an exemplary embodiment of this application includes, in sequence along the optical axis from the object side to the image side: aperture stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8, filter E9, and imaging surface S19.

[0243] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has positive optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The eighth lens E8 has negative optical power, with its object-side surface S15 being concave and its image-side surface S16 being concave. The filter E9 has an object-side surface S17 and an image-side surface S18. Light from the object passes sequentially through each surface S1 to S18 and is finally imaged onto the imaging surface S19.

[0244] Table 28 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 10, wherein the units of radius of curvature and thickness are millimeters (mm).

[0245]

[0246] Table 28

[0247] As shown in Table 28, in Embodiment 10, the object-side surface and image-side surface of any one of the lenses from the first lens E1 to the eighth lens E8 are aspherical. Table 29 shows the higher-order coefficients that can be used for each aspherical mirror in Embodiment 10, wherein each aspherical surface shape can be defined by formula (1) given in Embodiment 1 above.

[0248] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -3.2500E-03 8.2560E-03 -2.4770E-02 2.8395E-02 -5.3800E-03 -2.1800E-02 2.3864E-02 -1.0030E-02 1.5550E-03 S2 1.5000E-03 -5.6490E-02 2.1718E-01 -5.5083E-01 8.4060E-01 -7.8789E-01 4.4359E-01 -1.3699E-01 1.7684E-02 S3 -1.2353E-01 9.1791E-02 -1.8406E-01 3.0794E-01 -3.9240E-01 3.6096E-01 -2.2054E-01 7.8448E-02 -1.2320E-02 S4 -1.2252E-01 1.0309E-01 -1.2213E-01 5.5700E-02 4.5214E-02 -8.2430E-02 5.3468E-02 -1.7500E-02 2.3790E-03 S5 -1.9200E-02 2.8642E-02 -4.9820E-02 4.6389E-02 -4.8560E-02 4.9450E-02 -3.2980E-02 1.2475E-02 -2.0700E-03 S6 1.4380E-02 -6.3170E-02 1.1554E-01 -1.4869E-01 1.4080E-01 -9.5520E-02 4.3094E-02 -1.0360E-02 8.2800E-04 S7 7.7826E-02 -1.1214E-01 9.2793E-02 6.1240E-03 -1.3380E-01 1.5690E-01 -8.1990E-02 2.0624E-02 -2.0200E-03 S8 2.9023E-02 -6.8300E-02 6.4645E-02 -8.7500E-03 -7.0790E-02 7.8316E-02 -3.4740E-02 6.7970E-03 -4.5000E-04 S9 -5.8820E-02 -1.4202E-01 3.0851E-01 -4.4312E-01 5.2361E-01 -4.6276E-01 2.5844E-01 -7.8460E-02 9.7940E-03 S10 3.0100E-04 -2.0150E-01 3.4734E-01 -3.8981E-01 3.5769E-01 -2.5795E-01 1.2540E-01 -3.4520E-02 4.0210E-03 S11 3.5366E-02 -1.0129E-01 7.0865E-02 -7.9900E-03 -4.4230E-02 4.9277E-02 -2.6130E-02 7.1180E-03 -7.9000E-04 S12 2.5980E-03 -4.6820E-02 3.3529E-02 -2.2040E-02 9.2660E-03 -1.9100E-03 -2.3000E-04 1.8500E-04 -2.7000E-05 S13 -6.1760E-02 -6.0590E-02 6.5531E-02 -9.5840E-02 9.9875E-02 -6.6230E-02 2.6773E-02 -6.0200E-03 5.7300E-04 S14 2.4114E-02 -4.6380E-02 2.6968E-02 -9.1600E-03 1.6930E-03 -1.3000E-04 -4.9000E-06 1.2700E-06 -3.0000E-08 S15 -9.0100E-03 2.0515E-02 -7.4000E-04 -6.3700E-03 3.5960E-03 -1.0300E-03 1.7300E-04 -1.7000E-05 6.9700E-07 S16 -5.6930E-02 3.3003E-02 -1.4050E-02 4.1550E-03 -8.5000E-04 1.1900E-04 -1.1000E-05 5.7700E-07 -1.3000E-08

[0249] Table 29

[0250] Table 30 gives the effective focal lengths f1 to f8 of each lens in Example 10, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the object side surface S1 to the imaging surface S19 of the first lens E1, and half the diagonal length ImgH of the effective pixel area on the imaging surface S19.

[0251] f1(mm) 5.91 f7 (mm) 97.82 f2 (mm) -4.58 f8(mm) -3.24 f3 (mm) 3.30 f(mm) 4.25 f4 (mm) 100.00 TTL(mm) 5.45 f5 (mm) 100.00 ImgH(mm) 3.54 f6 (mm) 115.43

[0252] Table 30

[0253] Figure 20A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 10 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 20B The astigmatism curve of the optical imaging lens of Embodiment 10 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 20C The distortion curve of the optical imaging lens of Embodiment 10 is shown, which represents the distortion magnitude value corresponding to different image heights. Figure 20D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 10 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to Figures 20A to 20D It can be seen that the optical imaging lens given in Example 10 can achieve good imaging quality.

[0254] In summary, Examples 1 to 10 satisfy the relationships shown in Table 31.

[0255] Conditional / Example 1 2 3 4 5 6 7 8 9 10 f / EPD 1.98 1.95 1.90 1.87 1.84 1.80 1.78 1.75 1.72 1.70 f1 / f3 2.79 2.94 2.87 2.55 2.41 2.37 2.36 1.89 1.87 1.79 f2 / f8 1.74 1.49 1.37 1.26 1.38 1.40 1.38 1.36 1.44 1.41 f / (|R5|+|R6|) 0.71 0.80 0.82 0.78 0.74 0.73 0.72 0.56 0.55 0.47 R11 / R12 0.36 0.26 0.49 1.17 1.17 0.90 1.16 0.68 0.69 0.92 R15 / R16 -0.26 -0.41 -0.48 -0.55 -0.61 -0.70 -0.73 -0.97 -1.26 -1.22 |f / f5|+|f / f7| 0.46 0.43 0.09 0.19 0.16 0.09 0.09 0.21 0.24 0.09 CT3 / TTL*10 1.29 1.37 1.30 1.23 1.21 1.20 1.25 1.06 1.05 1.05 f / R13 0.23 0.20 0.29 0.35 0.36 0.39 0.43 0.41 0.43 0.43 CT8 / (CT6+CT7) 1.38 1.35 1.00 0.85 0.90 0.84 1.07 0.72 0.58 0.51 T67 / (T12+T45) 0.72 0.81 1.04 0.91 0.96 1.00 0.99 0.97 0.98 0.97 R1 / R4 0.89 0.95 0.96 0.93 0.91 0.90 0.89 0.86 0.85 0.86 R2 / R3 0.75 0.73 0.65 0.58 0.57 0.58 0.56 0.55 0.56 0.55 TTL / ImgH 1.60 1.59 1.58 1.58 1.57 1.56 1.56 1.55 1.55 1.54

[0256] Table 31

[0257] This application also provides an imaging device, wherein the electronic photosensitive element can be a photocoupled device (CCD) or a complementary metal oxide semiconductor device (CMOS). The imaging device can be a stand-alone imaging device such as a digital camera, or an imaging module integrated into a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens described above.

[0258] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. An optical imaging lens, comprising, in sequence along the optical axis 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, and an eighth lens, having optical power, are characterized in that... The first lens has positive optical power, and its object side is convex and its image side is concave. The second lens has negative optical power, and its object side is convex while its image side is concave. The third lens has positive optical power, and both its object-side and image-side surfaces are convex. The object-side surface of the sixth lens is convex, and the image-side surface is concave. The object-side surface of the seventh lens is convex. The eighth lens has negative optical power, and both its object-side and image-side surfaces are concave. The optical imaging lens has eight lenses with optical power; the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy 1.70≤f / EPD≤2.0; The total effective focal length f of the optical imaging lens, the effective focal length f5 of the fifth lens, and the effective focal length f7 of the seventh lens satisfy 0.09≤|f / f5|+|f / f7|<0.

5.

2. The optical imaging lens according to claim 1, characterized in that, The effective focal length f1 of the first lens and the effective focal length f3 of the third lens satisfy 1.79≤f1 / f3≤2.

94.

3. The optical imaging lens according to claim 1, characterized in that, The effective focal length f2 of the second lens and the effective focal length f8 of the eighth lens satisfy 1.26≤f2 / f8≤1.

74.

4. The optical imaging lens according to claim 1, characterized in that, The radius of curvature R1 of the object side of the first lens and the radius of curvature R4 of the image side of the second lens satisfy 0.85≤R1 / R4<1.

5. The optical imaging lens according to claim 1, characterized in that, The radius of curvature R2 of the image side of the first lens and the radius of curvature R3 of the object side of the second lens satisfy 0.55≤R2 / R3≤0.

75.

6. The optical imaging lens according to claim 1, characterized in that, The total effective focal length f of the optical imaging lens, the radius of curvature R5 of the object side of the third lens, and the radius of curvature R6 of the image side of the third lens satisfy 0.47≤f / (|R5|+|R6|)≤0.

82.

7. The optical imaging lens according to claim 1, characterized in that, The radius of curvature R11 of the object side of the sixth lens and the radius of curvature R12 of the image side of the sixth lens satisfy 0.26 ≤ R11 / R12 < 1.

2.

8. The optical imaging lens according to claim 1, characterized in that, The radius of curvature R15 of the object side of the eighth lens and the radius of curvature R16 of the image side of the eighth lens satisfy -1.26≤R15 / R16≤-0.

26.

9. The optical imaging lens according to claim 1, characterized in that, The total effective focal length f of the optical imaging lens and the radius of curvature R13 of the object side surface of the seventh lens satisfy 0.20≤f / R13≤0.

43.

10. The optical imaging lens according to any one of claims 1 to 9, characterized in that, The center thickness CT3 of the third lens on the optical axis and the distance TTL from the object side of the first lens to the imaging plane of the optical imaging lens on the optical axis satisfy 1.05 ≤ CT3 / TTL 10≤1.

37.

11. The optical imaging lens according to any one of claims 1 to 9, characterized in that, The center thickness CT6 of the sixth lens on the optical axis, the center thickness CT7 of the seventh lens on the optical axis, and the center thickness CT8 of the eighth lens on the optical axis satisfy 0.5 < CT8 / (CT6+CT7) ≤ 1.

38.

12. The optical imaging lens according to any one of claims 1 to 9, characterized in that, The spacing T12 between the first lens and the second lens on the optical axis, the spacing T45 between the fourth lens and the fifth lens on the optical axis, and the spacing T67 between the sixth lens and the seventh lens on the optical axis satisfy 0.72≤T67 / (T12+T45)≤1.

04.

13. The optical imaging lens according to any one of claims 1 to 9, characterized in that, The distance TTL from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis and half the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens satisfy 1.54≤TTL / ImgH≤1.6.

Images