Optical imaging lens

Abstract

The invention discloses an optical imaging lens, the optical imaging lens comprises a lens barrel, and a lens group and a separator group which are arranged in the lens barrel, and the lens group sequentially comprises a first lens with negative focal power, a second lens with negative focal power, a third lens with negative focal power and a fourth lens with negative focal power from an object side to an image side along an optical axis; the second lens has positive focal power; the third lens has positive focal power; the fourth lens has focal power; the fifth lens has focal power; the separator group comprises at least one separator arranged between two adjacent lenses; the aperture number fno of the optical imaging lens and the maximum half field angle Semi-FOV of the optical imaging lens meet the following formula: 2lt; fno * tan (Semi-FOV) is less than or equal to 2.1671; the optical imaging lens further meets the condition that (D0s-DT11) / (D0m-DT52) is larger than or equal to 0.9111 and smaller than or equal to 1.3482, D0s is the outer diameter of the end face of the object side of the lens barrel, D0m is the outer diameter of the end face of the image side of the lens barrel, DT11 is the diameter of the light-transmitting part of the object side face of the first lens, and DT52 is the diameter of the light-transmitting part of the image side face of the fifth lens.

Description

[0001] Divisional Application Statement

[0002] This application is a divisional application of the China Invention Patent Application No. 202410426752.8, titled "Optical Imaging Lens", filed on April 10, 2024. TECHNICAL FIELD

[0003] The present application relates to the field of optical elements, in particular, to an optical imaging lens. BACKGROUND

[0004] In recent years, with the improvement of people's living standards, unmanned aerial vehicles have gradually entered the public's field of vision. In order to better improve people's experience of using unmanned aerial vehicles, the development of unmanned aerial vehicle automation and intelligence is inevitable. The obstacle avoidance technology is one of the key links to achieve this goal, and a perfect obstacle avoidance system can reduce the injuries of personnel or damage of unmanned aerial vehicles caused by operation errors. As a core component of the obstacle avoidance technology, the obstacle avoidance lens will be fully applied with the development of intelligent unmanned aerial vehicles and has a broad application prospect.

[0005] The obstacle avoidance lens generally adopts a large-aperture, ultra-wide-angle lens. Such a lens is often assembled in an inverted manner, that is, the last lens is assembled first. If the diameter of the light-transmitting part and the diameter of the non-light-transmitting part of the last lens are not reasonably designed, it will cause many problems, for example, if the diameter of the non-light-transmitting part is too short, it will cause the length of the bearing position to be insufficient, thereby causing the problem of unstable assembly, and for another example, if the diameter of the non-light-transmitting part is too long, it will cause the problem of face shape change when the lens is formed, or even cause the tail end of the entire lens to be difficult to form. Therefore, it is of great practical significance to design a large-aperture, ultra-wide-angle lens with good assembly stability and good formability. SUMMARY

[0006] The first aspect of the present application provides such an optical imaging lens, which comprises: a lens barrel and a lens group and a spacer group arranged in the lens barrel, wherein the lens group comprises, in order from the object side to the image side along the optical axis: a first lens having a negative refractive power; a second lens having a positive refractive power; a third lens having a positive refractive power; a fourth lens having a refractive power; and a fifth lens having a refractive power; the spacer group comprises at least one spacer arranged between two adjacent lenses; and the aperture number fno of the optical imaging lens and the maximum half field angle Semi-FOV of the optical imaging lens satisfy: 2 < fno x tan(Semi-FOV) < 2.5; and the outer diameter D0m of the image side end surface of the lens barrel, the inner diameter d0m of the image side end surface of the lens barrel, and the diameter DT52 of the light-transmitting part of the image side surface of the fifth lens satisfy: 0.5 < (D0m-d0m) / DT52 < 1.5.

[0007] In an embodiment, the spacer group comprises a first spacer disposed between the first lens and the second lens and at least partially in contact with the image side surface of the first lens; the optical imaging lens satisfies: -5 < (d0s-d1s) / f1 < -2, where d0s is an inner diameter of the object side end surface of the lens barrel, d1s is an inner diameter of the object side surface of the first spacer, and f1 is an effective focal length of the first lens.

[0008] In an embodiment, the optical imaging lens satisfies: 2 < f / (L-TD) < 8, where f is an effective focal length of the optical imaging lens, L is a maximum height of the lens barrel along the optical axis, and TD is a distance along the optical axis from the object side surface of the first lens to the image side surface of the fifth lens.

[0009] In an embodiment, the optical imaging lens satisfies: 1.9 < d0s / d0m < 2.5, where d0s is an inner diameter of the object side end surface of the lens barrel, and d0m is an inner diameter of the image side end surface of the lens barrel.

[0010] In an embodiment, the optical imaging lens satisfies: 2 < d0s / DT11+d0m / DT52 < 4, where d0s is an inner diameter of the object side end surface of the lens barrel, d0m is an inner diameter of the image side end surface of the lens barrel, DT11 is a diameter of a light-transmitting portion of the object side surface of the first lens, and DT52 is a diameter of a light-transmitting portion of the image side surface of the fifth lens.

[0011] In an embodiment, the optical imaging lens satisfies: 0.7 < (D0s-DT11) / (D0m-DT52) < 1.4, where D0s is an outer diameter of the object side end surface of the lens barrel, D0m is an outer diameter of the image side end surface of the lens barrel, DT11 is a diameter of a light-transmitting portion of the object side surface of the first lens, and DT52 is a diameter of a light-transmitting portion of the image side surface of the fifth lens.

[0012] In an embodiment, the spacer group comprises a first spacer disposed between the first lens and the second lens and at least partially in contact with the image side surface of the first lens; the optical imaging lens satisfies: 0 < EP01 / (R1+R2) < 1, where EP01 is a distance along the optical axis from the object side end surface of the lens barrel to the object side surface of the first spacer, R1 is a radius of curvature of the object side surface of the first lens, and R2 is a radius of curvature of the image side surface of the first lens.

[0013] In one embodiment, the spacer group comprises: a second spacer disposed between the second lens and the third lens and at least partially in contact with the image side surface of the second lens; and a third spacer disposed between the third lens and the fourth lens and at least partially in contact with the object side surface of the fourth lens; and the optical imaging lens satisfies: 0 < (CP2+CP3) / (T23+T34) < 2, wherein CP2 is a thickness of the second spacer along the optical axis, CP3 is a thickness of the third spacer along the optical axis, T23 is a distance on the optical axis from the image side surface of the second lens to the object side surface of the third lens, and T34 is a distance on the optical axis from the image side surface of the third lens to the object side surface of the fourth lens.

[0014] In one embodiment, the spacer group comprises: a first spacer disposed between the first lens and the second lens and at least partially in contact with the image side surface of the first lens; and a second spacer disposed between the second lens and the third lens and at least partially in contact with the image side surface of the second lens; and the optical imaging lens satisfies: 0.6 < EP12 / (SAG21+SAG22) < 1.1, wherein EP12 is a distance along the optical axis from the image side surface of the first spacer to the object side surface of the second spacer, SAG21 is an on-axis distance between a point of intersection of the object side surface of the second lens and the optical axis and a vertex of the effective radius of the image side surface of the second lens, and SAG22 is an on-axis distance between a point of intersection of the image side surface of the second lens and the optical axis and a vertex of the effective radius of the image side surface of the second lens.

[0015] In one embodiment, the spacer group further comprises: a first spacer disposed between the first lens and the second lens and at least partially in contact with the image side surface of the first lens; a second spacer disposed between the second lens and the third lens and at least partially in contact with the image side surface of the second lens; and a third spacer disposed between the third lens and the fourth lens and at least partially in contact with the object side surface of the fourth lens; and the optical imaging lens satisfies: 0 < EP12 / f2+EP23 / f3 < 0.7, wherein EP12 is a distance along the optical axis from the image side surface of the first spacer to the object side surface of the second spacer, EP23 is a distance along the optical axis from the image side surface of the second spacer to the object side surface of the third spacer, f2 is an effective focal length of the second lens, and f3 is an effective focal length of the third lens.

[0016] In one embodiment, the spacer group comprises: a second spacer disposed between the second lens and the third lens and at least partially in contact with the image side surface of the second lens; and a third spacer disposed between the third lens and the fourth lens and at least partially in contact with the object side surface of the fourth lens; the optical imaging lens satisfies: -20 < EP23 / CT3-CP3 / T34 < 1, where EP23 is the distance along the optical axis from the image side surface of the second spacer to the object side surface of the third spacer, CT3 is the central thickness of the third lens on the optical axis, CP3 is the thickness of the third spacer along the optical axis, and T34 is the distance on the optical axis from the image side surface of the third lens to the object side surface of the fourth lens.

[0017] In one embodiment, the spacer group comprises: a third spacer disposed between the third lens and the fourth lens and at least partially in contact with the object side surface of the fourth lens; and a fourth spacer disposed between the fourth lens and the fifth lens and at least partially in contact with the image side surface of the fourth lens; the optical imaging lens satisfies: -0.5 < (EP34+CP4) / f4 < 1, where EP34 is the distance along the optical axis from the image side surface of the third spacer to the object side surface of the fourth spacer, CP4 is the thickness of the fourth spacer along the optical axis, and f4 is the effective focal length of the fourth lens.

[0018] In one embodiment, the spacer group comprises: a first spacer disposed between the first lens and the second lens and at least partially in contact with the image side surface of the first lens; a second spacer disposed between the second lens and the third lens and at least partially in contact with the image side surface of the second lens; a third spacer disposed between the third lens and the fourth lens and at least partially in contact with the object side surface of the fourth lens; and a fourth spacer disposed between the fourth lens and the fifth lens and at least partially in contact with the image side surface of the fourth lens; the optical imaging lens satisfies: 0 < ∑CP / ∑AT < 1, where ∑CP is the sum of the thicknesses of the first spacer, the second spacer, the third spacer, and the fourth spacer along the optical axis, and ∑AT is the sum of the air spacings on the optical axis between any two adjacent lenses among the first lens to the fifth lens.

[0019] The second aspect of the present application provides an optical imaging lens, comprising: a lens barrel, and a lens set and a spacer set arranged in the lens barrel, wherein the lens set comprises, in order from the object side to the image side along the optical axis, a first lens with negative refractive power, a second lens with positive refractive power, a third lens with positive refractive power, a fourth lens with refractive power, and a fifth lens with refractive power. The spacer set can comprise at least one spacer arranged between two adjacent lenses; the optical imaging lens satisfies: 2 < d0s / DT11+d0m / DT52< 4 and 0.7 < (D0s-DT11) / (D0m-DT52) < 1.4, wherein d0s is the inner diameter of the object side end surface of the lens barrel, d0m is the inner diameter of the image side end surface of the lens barrel, DT11 is the diameter of the light-transmitting part of the object side surface of the first lens, DT52 is the diameter of the light-transmitting part of the image side surface of the fifth lens, D0s is the outer diameter of the object side end surface of the lens barrel, and D0m is the outer diameter of the image side end surface of the lens barrel.

[0020] The third aspect of the present application also provides an optical imaging lens, comprising a lens barrel, and a lens set and a spacer set arranged in the lens barrel, wherein the lens set comprises, in order from the object side to the image side along the optical axis, a first lens with negative refractive power, a second lens with positive refractive power, a third lens with positive refractive power, a fourth lens with positive refractive power or negative refractive power, and a fifth lens with positive refractive power or negative refractive power. The image side surface of the first lens is concave, the object side surface of the second lens is convex, the image side surface of the second lens is concave, the object side surface of the third lens is convex, the image side surface of the third lens is convex, the object side surface of the fourth lens is convex, and the image side surface of the fifth lens is convex. The spacer set comprises at least one spacer arranged between two adjacent lenses, and the aperture number fno of the optical imaging lens and the maximum half field angle Semi-FOV of the optical imaging lens satisfy 2 < fno x tan(Semi-FOV) ≤ 2.1671, and the optical imaging lens also satisfies 0.9111 ≤ (D0s-DT11) / (D0m-DT52) ≤ 1.3482, wherein D0s is the outer diameter of the object side end surface of the lens barrel, D0m is the outer diameter of the image side end surface of the lens barrel, DT11 is the diameter of the light-transmitting part of the object side surface of the first lens, and DT52 is the diameter of the light-transmitting part of the image side surface of the fifth lens. The optical imaging lens satisfies 2 < fno x tan(Semi-FOV) ≤ 2.1671, has the characteristics of large aperture and ultra-wide angle, and is often assembled in an inverted manner. When the ratio of the diameter of the non-light-transmitting part to the diameter of the light-transmitting part of the fifth lens is large, it means that the diameter of the non-light-transmitting part is too long, which will cause the surface shape of the fifth lens to change during molding, or even cause the tail end of the lens to be difficult to mold. When the ratio of the diameter of the non-light-transmitting part to the diameter of the light-transmitting part of the fifth lens is small, it means that the diameter of the non-light-transmitting part of the fifth lens is too short, which will cause the length of the bearing position to be insufficient, thereby causing the problem of unstable assembly. The optical imaging lens also satisfies 0.9111 ≤ (D0s-DT11) / (D0m-DT52) ≤ 1.3482, which is beneficial to controlling the length of the non-light-transmitting part of the first lens and the fifth lens, making the size of the non-light-transmitting part and the light-transmitting part of the first lens and the fifth lens within a reasonable range, reducing the molding difficulty of the lens, and reducing the molding risk of the whole lens set.

[0021] The application provides a five-piece optical imaging lens, the refractive powers of lenses are reasonably arranged, and 2 < fno x tan (Semi-FOV) < 2.5 is met, the lens has the characteristics of a large aperture and an ultra-wide angle, and the lens is often assembled in an inverted manner. When the ratio of the diameter of the non-light-transmitting part of the fifth lens to the diameter of the light-transmitting part of the fifth lens is large, it means that the diameter of the non-light-transmitting part of the fifth lens is too long, which can cause the surface shape of the fifth lens to change when the fifth lens is formed, and even cause the tail end of the lens to be difficult to form. When the ratio of the diameter of the non-light-transmitting part of the fifth lens to the diameter of the light-transmitting part of the fifth lens is small, it means that the diameter of the non-light-transmitting part of the fifth lens is too short, which can cause the length of the bearing position to be insufficient, and further cause the problem of unstable assembly. The application limits the relationship between the inner and outer diameters of the image side end of the lens barrel and the diameter of the light-transmitting part of the image side of the fifth lens to meet 0.5 < (D0m-d0m) / DT52 < 1.5, so that the ratio of the diameter of the non-light-transmitting part of the fifth lens to the diameter of the light-transmitting part of the fifth lens tends to a reasonable range. On the one hand, the problem of unstable assembly caused by the diameter of the non-light-transmitting part of the fifth lens being too short and the length of the bearing position being insufficient can be avoided, and on the other hand, the problem of the surface shape changing when the fifth lens is formed and the tail end of the lens being difficult to form caused by the diameter of the non-light-transmitting part of the fifth lens being too long can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0022] Other characteristics, objects and advantages of the application will become more apparent from the following detailed description of non-limiting embodiments, made with reference to the accompanying drawings:

[0023] Figure 1 The structural arrangement diagram and the schematic diagram of part parameters of an optical imaging lens according to the application are shown;

[0024] Figure 2A The structural schematic diagram of an optical imaging lens according to the embodiment 1 of the application is shown;

[0025] Figure 2B The structural schematic diagram of an optical imaging lens according to the embodiment 2 of the application is shown;

[0026] Figure 2C The structural schematic diagram of an optical imaging lens according to the embodiment 3 of the application is shown;

[0027] Figures 3A-3D The on-axis chromatic aberration curve, the astigmatism curve, the distortion curve and the magnification chromatic aberration curve of the optical imaging lens according to the embodiment 1 to the embodiment 3 of the application are respectively shown;

[0028] Figure 4A The structural schematic diagram of an optical imaging lens according to the embodiment 4 of the application is shown;

[0029] Figure 4BA structural schematic diagram of an optical imaging lens according to Embodiment 5 of the present application is shown;

[0030] Figure 4C A structural schematic diagram of an optical imaging lens according to Embodiment 6 of the present application is shown;

[0031] Figures 5A-5D Axial chromatic aberration curves, astigmatism curves, distortion curves and lateral chromatic aberration curves of the optical imaging lenses according to Embodiments 4 to 6 of the present application are shown respectively;

[0032] Figure 6A A structural schematic diagram of an optical imaging lens according to Embodiment 7 of the present application is shown;

[0033] Figure 6B A structural schematic diagram of an optical imaging lens according to Embodiment 8 of the present application is shown;

[0034] Figure 6C A structural schematic diagram of an optical imaging lens according to Embodiment 9 of the present application is shown;

[0035] Figures 7A-7D Axial chromatic aberration curves, astigmatism curves, distortion curves and lateral chromatic aberration curves of the optical imaging lenses according to Embodiments 7 to 9 of the present application are shown respectively;

[0036] Figure 8A A partial structural schematic diagram of an optical imaging lens according to the present application is shown when fno x tan (Semi-FOV) = 2.14 and (D0m-d0m) / DT52 = 0.81;

[0037] Figure 8B A partial structural schematic diagram of an optical imaging lens according to the present application is shown when fno x tan (Semi-FOV) = 3 and (D0m-d0m) / DT52 = 2; Figure 8A

[0038] Figure 9A A partial structural schematic diagram of an optical imaging lens according to the present application is shown when fno x tan (Semi-FOV) = 2.16 and (D0m-d0m) / DT52 = 1.2; and

[0039] Figure 9B A partial structural schematic diagram of an optical imaging lens according to the present application is shown when fno x tan (Semi-FOV) = 2.16 and (D0m-d0m) / DT52 = 1.2; and Figure 9A

[0040] A partial structural schematic diagram of an optical imaging lens according to the present application is shown when fno x tan (Semi-FOV) = 2.16 and (D0m-d0m) / DT52 = 1.2; and Figure 10A

[0041] Figure 10B ​​A local strain diagram of the optical imaging lens according to the present application is shown in fno x tan (Semi-FOV) = 3 and (D0m-d0m) / DT52 = 0.1. DETAILED DESCRIPTION

[0042] For a better understanding of the present application, various aspects of the present application will be described in more detail below with reference to the accompanying drawings. It is to be noted that these detailed description is merely descriptive of exemplary embodiments of the present application and is not intended in any way to limit the scope of the present application. Throughout the specification, like drawing reference numerals will refer to like elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0043] It should be noted that the expressions first, second, third and the like in this description merely serve to distinguish one feature from another without implying any limitation on the features. Thus, a first lens discussed below can also be referred to as a second lens or a third lens without departing from the teachings of the present application.

[0044] In the drawings, the thickness, size, and shape of the lenses have been exaggerated slightly for the sake of explanation. Specifically, the shape of a spherical surface or an aspherical surface shown in the drawings is shown by way of example. That is, the shape of a spherical surface or an aspherical surface is not limited to the shape of a spherical surface or an aspherical surface shown in the drawings. The drawings are merely examples and are not drawn to scale.

[0045] In this context, the paraxial region refers to a region near the optical axis. If a lens surface is convex and the position of the convex surface is not specified, it means that the lens surface is convex at least in the paraxial region. If a lens surface is concave and the position of the concave surface is not specified, it means that the lens surface is concave at least in the paraxial region. The surface of each lens that is closer to the object is referred to as the object side surface of the lens, and the surface of each lens that is closer to the image plane is referred to as the image side surface of the lens.

[0046] It should also be understood that the words "comprise", "comprising", "include", "including", and / or "contain", when used in this specification, specify the presence of stated features, elements, and / or components, but do not preclude the presence or addition of one or more other features, elements, components, and / or groups thereof. Furthermore, when describing the embodiments of the present application, the use of "may" means that one or more embodiments of the present application. Also, the word "exemplary" is intended to mean an example or an illustration.

[0047] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by those skilled in the art to which this application belongs. It should also be understood that terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology and will not be interpreted in an idealized or overly formal sense unless expressly defined as such herein.

[0048] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The following embodiments only express several implementation methods of the present application, and their descriptions are relatively specific and detailed, but they should not be understood as limiting the scope of the patent of the present application. It should be pointed out that for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all fall within the scope of protection of the present application. For example, the lens groups, lens barrels, and spacers in the various embodiments of the present application can be arbitrarily combined, and are not limited to the lens group in one embodiment being combined only with the lens barrel, spacer, etc. of that embodiment.

[0049] The present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments. Figure 1 The following figure shows the structure of an optical imaging lens according to the present application and a schematic diagram of some parameters. It should be understood by those skilled in the art that some lens parameters commonly used in the art (such as the center thickness CT1 of the first lens on the optical axis) are not shown in the figure. Figure 1 As shown in Figure 1 Only some parameters of the lens barrel and the spacer of an optical imaging lens of the present application are shown as examples to facilitate a better understanding of the present invention. Figure 1 As shown, L is the maximum height of the lens barrel along the optical axis, CP1 is the thickness of the first isolator along the optical axis, CP2 is the thickness of the second isolator along the optical axis, CP3 is the thickness of the third isolator along the optical axis, CP4 is the thickness of the fourth isolator along the optical axis, EP01 is the distance from the object side end face of the lens barrel to the object side face of the first isolator along the optical axis, EP12 is the distance from the image side face of the first isolator to the object side face of the second isolator along the optical axis, EP23 is the distance from the image side face of the second isolator to the object side face of the third isolator along the optical axis, D0m is the outer diameter of the image side end face of the lens barrel, d0m is the inner diameter of the image side end face of the lens barrel, D0s is the outer diameter of the object side end face of the lens barrel, d0s is the inner diameter of the object side end face of the lens barrel, and d1s is the inner diameter of the object side face of the first isolator.

[0050] The optical imaging lens according to the exemplary embodiments of the present application can include a lens barrel, and a lens group and a spacer group disposed in the lens barrel. The lens group can include, in order from an object side to an image side along an optical axis, a first lens having a negative refractive power, a second lens having a positive refractive power, a third lens having a positive refractive power, a fourth lens having a positive refractive power or a negative refractive power, and a fifth lens having a positive refractive power or a negative refractive power.

[0051] In the exemplary embodiments, the spacer group of the optical imaging lens can include at least one of a first spacer, a second spacer, a third spacer, and a fourth spacer. The first spacer is disposed between the first lens and the second lens and at least partially contacts an image side surface of the first lens. The second spacer is disposed between the second lens and the third lens and at least partially contacts an image side surface of the second lens. The third spacer is disposed between the third lens and the fourth lens and at least partially contacts an object side surface of the fourth lens. The fourth spacer is disposed between the fourth lens and the fifth lens and at least partially contacts an image side surface of the fourth lens.

[0052] It should be understood that the present application does not specifically limit the number of spacers, and any number of spacers can be included between any two lenses, and any number of spacers can be included in the entire optical imaging lens. The spacers help the optical imaging lens to intercept excess catadioptric light paths, reduce stray light and ghosting. The spacers and the lens barrel increase auxiliary bearing, which is helpful to improve the poor assembly stability and low performance yield caused by large gap between lenses.

[0053] In the exemplary embodiments, the optical imaging lens can further include a stop for limiting a light beam, to further improve the imaging quality of the optical lens. For example, the stop can be disposed between the second lens and the third lens. The stop is helpful to converge the light entering the optical lens, reduce the maximum light aperture of the optical lens, and reduce the assembly sensitivity of the system. However, it should be noted that the position of the stop disclosed herein is only an example and not a limitation; in alternative embodiments, the stop can also be disposed at other positions according to actual needs.

[0054] In the exemplary embodiments, the optical imaging lens according to the present application can satisfy 2 < fno x tan (Semi-FOV) < 2.5, where fno is the aperture number of the optical imaging lens, and Semi-FOV is the maximum half field of view of the optical imaging lens. Satisfying 2 < fno x tan (Semi-FOV) < 2.5 makes the optical lens of the present application have the characteristics of large aperture and ultra-wide angle.

[0055] In the example embodiments, the optical imaging lens according to the present application can satisfy: 0.5 < (D0m-d0m) / DT52<1.5, where D0m is the outer diameter of the image side end surface of the lens barrel, d0m is the inner diameter of the image side end surface of the lens barrel, and DT52 is the diameter of the light-transmitting part of the image side surface of the fifth lens. The difference between the outer diameter and the inner diameter of the image side end surface of the lens barrel determines the size of the non-light-transmitting part of the fifth lens to some extent. Satisfying 0.5 < (D0m-d0m) / DT52<1.5 is conducive to the ratio of the diameter of the non-light-transmitting part and the diameter of the light-transmitting part of the fifth lens being within a reasonable range. On the one hand, this can avoid the problem of unstable assembly caused by the diameter of the non-light-transmitting part of the fifth lens being too short and the length of the bearing position being insufficient, and on the other hand, this can fully avoid the problem of changes in the surface shape during molding of the fifth lens caused by the diameter of the non-light-transmitting part of the fifth lens being too long, which makes it difficult to mold the tail end of the lens.

[0056] The optical imaging lens according to the example embodiments of the present application comprises a lens barrel and a lens group and a spacer group arranged in the lens barrel, wherein the lens group comprises, in order from the object side to the image side along the optical axis, a first lens having a negative focal power, a second lens having a positive focal power, a third lens having a positive focal power, a fourth lens having a focal power, and a fifth lens having a focal power. The spacer group can comprise at least one spacer arranged between two adjacent lenses. The aperture number fno of the optical imaging lens and the maximum half field angle Semi-FOV of the optical imaging lens satisfy: 2 < fno x tan(Semi-FOV) < 2.5, that is, the optical lens according to the present application has the characteristics of large aperture and ultra-wide angle. Such a lens is often assembled in an inverted manner. When the ratio of the diameter of the non-light-transmitting part and the diameter of the light-transmitting part of the fifth lens is large, it means that the diameter of the non-light-transmitting part is too long, which can cause changes in the surface shape during molding of the fifth lens, and even make it difficult to mold the tail end of the lens. When the ratio of the diameter of the non-light-transmitting part and the diameter of the light-transmitting part of the fifth lens is small, it means that the diameter of the non-light-transmitting part of the fifth lens is too short, which can also cause the problem of insufficient length of the bearing position, and further cause the problem of unstable assembly. The present application limits the relationship between the inner and outer diameters of the image side end of the lens barrel and the diameter of the light-transmitting part of the image side surface of the fifth lens to satisfy 0.5 < (D0m-d0m) / DT52<1.5, so that the ratio of the diameter of the non-light-transmitting part and the diameter of the light-transmitting part of the fifth lens tends to a reasonable range. On the one hand, this can avoid the problem of unstable assembly caused by the diameter of the non-light-transmitting part of the fifth lens being too short and the length of the bearing position being insufficient, and on the other hand, this can fully avoid the problem of changes in the surface shape during molding of the fifth lens caused by the diameter of the non-light-transmitting part of the fifth lens being too long, which makes it difficult to mold the tail end of the lens.

[0057] The application controls the condition 2<fno*tan(Semi-FOV)<2.5 and 0.5<(D0m-d0m) / DT52<1.5 in the range, so that the optical imaging lens provided by the application has good assembly stability while having the technical advantages of large aperture and ultra-wide angle, overcomes the problem of unstable surface shape of the fifth lens, and can better meet the industry application requirements.

[0058] The technical solutions of the application will be further described below in combination with Figures 8A-10B to illustrate the effect of the technical solutions of the application on improving the overall assembly stability of the lens.

[0059] Figure 8A A local structure schematic diagram of the optical imaging lens according to the application is shown when fno*tan(Semi-FOV)=2.14 and (D0m-d0m) / DT52=0.81. Figure 8B A local structure schematic diagram of the optical imaging lens according to the application is shown when fno*tan(Semi-FOV)=2.14 and (D0m-d0m) / DT52=0.81. Figure 8A A curve diagram of the surface shape change of the image side surface of the fifth lens of the optical imaging lens according to the application is shown.

[0060] Figure 9A A local structure schematic diagram of the optical imaging lens according to the application is shown when fno*tan(Semi-FOV)=3 and (D0m-d0m) / DT52=2. Figure 9B A local structure schematic diagram of the optical imaging lens according to the application is shown when fno*tan(Semi-FOV)=3 and (D0m-d0m) / DT52=2. Figure 9A A curve diagram of the surface shape change of the image side surface of the fifth lens of the optical imaging lens according to the application is shown.

[0061] Figure 8B and Figure 9B The horizontal axis and the vertical axis in the curve diagram represent the position coordinate axes of the image side surface of the fifth lens, the origin (0, 0) represents the center position of the fifth lens, the blue curve represents the position coordinate of the image side surface of the fifth lens in the X-axis direction, and the red curve represents the position coordinate of the image side surface of the fifth lens in the Y-axis direction. The two ends of the blue curve and the red curve represent the coordinates of the edge positions of the image side surface of the fifth lens (the edge positions refer to the edge positions of the light-transmitting part, and do not include the non-light-transmitting part). The more the blue curve and the red curve coincide, the better the surface shape consistency of the image side surface of the fifth lens in the X-axis and Y-axis directions; the more the blue curve and the red curve are dispersed, the greater the surface shape difference of the image side surface of the fifth lens in the X-axis and Y-axis directions, and the worse the forming effect of the surface shape.

[0062] Figure 8AThe ratio of the difference between the outer diameter and the inner diameter of the image-side end surface of the lens barrel of the optical imaging lens and the diameter of the light-transmitting portion of the fifth lens satisfies the range of 0.5<(D0m-d0m) / DT52<1.5 of the present application. The difference between the outer diameter and the inner diameter of the image-side end surface of the lens barrel determines the size of the non-light-transmitting portion of the fifth lens to some extent. That is, when 0.5<(D0m-d0m) / DT52<1.5 of the present application is satisfied, the ratio of the diameter of the non-light-transmitting portion and the diameter of the light-transmitting portion of the fifth lens is reasonable, so, Figure 8B In the surface profile change curve diagram of the image-side surface of the fifth lens shown, the blue curve and the red curve tend to coincide, and the surface profile consistency of the image-side surface of the fifth lens in the X-axis and Y-axis directions is good.

[0063] However Figure 9A The ratio of the difference between the outer diameter and the inner diameter of the image-side end surface of the lens barrel of the optical imaging lens and the diameter of the light-transmitting portion of the fifth lens does not satisfy the range of 0.5<(D0m-d0m) / DT52<1.5 of the present application. (D0m-d0m) / DT52=2 indicates that the difference between the outer diameter and the inner diameter of the image-side end surface of the lens barrel is too large, which can make the diameter of the non-light-transmitting portion of the fifth lens too long, so, Figure 9B In the surface profile change curve diagram of the image-side surface of the fifth lens shown, the blue curve and the red curve tend to separate, and the two ends of the blue curve and the red curve representing the edge position are separated very seriously, indicating that the surface profile change of the image-side surface of the fifth lens in the X-axis and Y-axis directions is large, and the fifth lens is difficult to form.

[0064] Understandably, a lens will deform to some extent under the action of external force after assembly. The degree of deformation is called strain, which is the ratio of the deformation amount to the original length size and is dimensionless. The size of the strain can reflect the concentration degree of stress. The smaller the strain range of a lens, the higher the stability of the lens, Figure 10A and Figure 10B The strain schematic diagram of the optical imaging lens after assembly is shown. The positive and negative of the strain represent the change direction of the strain, or can also be understood as the direction of deformation, for example Figure 10A and Figure 10B In the above, the direction of strain or deformation upward (object side) is defined as the positive direction, and the direction of strain or deformation downward (image side) is defined as the negative direction.

[0065] More specifically, Figure 10A The local strain schematic diagram of the optical imaging lens according to the present application when fno x tan (Semi-FOV) = 2.16 and (D0m-d0m) / DT52=1.2 is shown, that is, both of the above two conditions satisfy the range of the present application, and the ratio of the diameter of the non-light-transmitting portion and the diameter of the light-transmitting portion of the fifth lens is reasonable; Figure 10BThe local strain diagram of the optical imaging lens according to the present application is shown when fno x tan (Semi-FOV) = 3 and (D0m-d0m) / DT52 = 0.1, that is, both of the above two conditions do not meet the range of the present application, and (D0m-d0m) / DT52 = 0.1 indicates that the difference between the outer diameter and the inner diameter of the image side end surface of the lens barrel is too small, which can make the diameter of the non-light-transmitting part of the fifth lens too short, and the ratio of the diameter of the non-light-transmitting part to the diameter of the light-transmitting part of the fifth lens is unreasonable.

[0066] Figure 10A In the above-mentioned condition, the strain of the fifth lens is between -0.0004 and -0.0008, Figure 10B In the above-mentioned condition, the strain of the fifth lens is between -0.0022 and -0.0037, that is, Figure 10A satisfying the range of 2 < fno x tan (Semi-FOV) < 2.5 and 0.5 < (D0m-d0m) / DT52 < 1.5 of the present application, the ratio of the diameter of the non-light-transmitting part to the diameter of the light-transmitting part of the fifth lens is reasonable, the strain range of the fifth lens is relatively small, which is beneficial to improve the surface stability and enhance the overall assembly stability of the lens. Figure 10B The diameter of the non-light-transmitting part of the fifth lens is too short, and the strain range of the fifth lens is relatively large, which can cause poor overall assembly stability.

[0067] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy -5 < (d0s-d1s) / f1 < -2, where d0s is the inner diameter of the object side end surface of the lens barrel, d1s is the inner diameter of the object side surface of the first spacer, and f1 is the effective focal length of the first lens. Satisfying -5 < (d0s-d1s) / f1 < -2, by controlling the size of the difference between the inner diameter of the object side end surface of the lens barrel and the inner diameter of the object side surface of the first spacer, the light flux of the lens can be controlled, and by controlling the effective focal length of the first lens, the molding of the first lens is facilitated.

[0068] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy 2 < f / (L-TD) < 8, where f is the effective focal length of the optical imaging lens, L is the maximum height of the lens barrel along the optical axis, and TD is the distance from the object side surface of the first lens to the image side surface of the fifth lens on the optical axis. Satisfying 2 < f / (L-TD) < 8, by controlling L and TD within a reasonable range, the optical imaging lens is ensured to have the characteristics of miniaturization, and by controlling the effective focal length of the lens within a reasonable range, the chief ray deflection angle can be controlled, which can limit the height of the lens barrel, ensure that the lens meets the wide-angle requirement while taking into account the characteristics of miniaturization.

[0069] In exemplary embodiments, the optical imaging lens according to the present application can satisfy: 1.9 < d0s / d0m < 2.5, where d0s is the inner diameter of the object-side end surface of the lens barrel, and d0m is the inner diameter of the image-side end surface of the lens barrel. Satisfying 1.9 < d0s / d0m < 2.5, by controlling the size of the ratio of the inner diameter of the object-side end surface of the lens barrel to the inner diameter of the image-side end surface of the lens barrel, the size of the outer diameter difference of the first lens to the fifth lens, i.e., the degree of decrease of the outer diameter of the first lens to the fifth lens, can be controlled, the inner diameter and the outer diameter of the lens barrel can be uniformly changed, and the uniformity of the lens barrel forming can be further controlled.

[0070] In exemplary embodiments, the optical imaging lens according to the present application can satisfy: 2 < d0s / DT11 + d0m / DT52 < 4, where d0s is the inner diameter of the object-side end surface of the lens barrel, d0m is the inner diameter of the image-side end surface of the lens barrel, DT11 is the diameter of the light-transmitting portion of the object-side surface of the first lens, and DT52 is the diameter of the light-transmitting portion of the image-side surface of the fifth lens. The inner diameter of the object-side end surface of the lens barrel determines the size of the non-light-transmitting portion of the first lens to a certain extent, the inner diameter of the image-side end surface of the lens barrel determines the size of the non-light-transmitting portion of the fifth lens to a certain extent, and satisfying 2 < d0s / DT11 + d0m / DT52 < 4, reasonably setting the ratio of the inner diameter of the object-side end surface of the lens barrel to the diameter of the light-transmitting portion of the first lens and the ratio of the inner diameter of the image-side end surface of the lens barrel to the diameter of the light-transmitting portion of the fifth lens, is conducive to controlling the size of the non-light-transmitting portion and the light-transmitting portion of the first lens and the fifth lens within a reasonable range, reducing the difficulty of forming the lens, and reducing the overall forming risk of the lens group.

[0071] In exemplary embodiments, the optical imaging lens according to the present application can satisfy: 0.7 < (D0s-DT11) / (D0m-DT52) < 1.4, where D0s is the outer diameter of the object-side end surface of the lens barrel, D0m is the outer diameter of the image-side end surface of the lens barrel, DT11 is the diameter of the light-transmitting portion of the object-side surface of the first lens, and DT52 is the diameter of the light-transmitting portion of the image-side surface of the fifth lens. The difference between the outer diameter of the object-side end surface of the lens barrel and the diameter of the light-transmitting portion of the first lens determines the size of the non-light-transmitting portion of the first lens to a certain extent, the difference between the outer diameter of the image-side end surface of the lens barrel and the diameter of the light-transmitting portion of the fifth lens determines the size of the non-light-transmitting portion of the fifth lens to a certain extent, and satisfying 0.7 < (D0s-DT11) / (D0m-DT52) < 1.4, reasonably setting the outer diameters of the object-side end surface and the image-side end surface of the lens barrel, the diameters of the light-transmitting portions of the first lens and the fifth lens, is conducive to controlling the length of the non-light-transmitting portion of the first lens and the fifth lens, making the size of the non-light-transmitting portion and the light-transmitting portion of the first lens and the fifth lens within a reasonable range, reducing the difficulty of forming the lens, and reducing the overall forming risk of the lens group.

[0072] In exemplary embodiments, the optical imaging lens according to the present application can satisfy: 0 < EP01 / (R1+R2) < 1, where EP01 is the distance along the optical axis from the object side end surface of the lens barrel to the object side surface of the first spacer, R1 is the radius of curvature of the object side surface of the first lens, and R2 is the radius of curvature of the image side surface of the first lens. Satisfying 0 < EP01 / (R1+R2) < 1, by controlling this formula within a reasonable range, it is beneficial to control the bending degree of both sides of the first lens within a reasonable range, while controlling the sag of the first lens, reducing the risk of weld marks caused by excessive sag of the first lens, and facilitating the molding of the first lens.

[0073] In exemplary embodiments, the optical imaging lens according to the present application can satisfy: 0 < (CP2+CP3) / (T23+T34) < 2, where CP2 is the thickness of the second spacer along the optical axis, CP3 is the thickness of the third spacer along the optical axis, T23 is the distance on the optical axis from the image side surface of the second lens to the object side surface of the third lens, and T34 is the distance on the optical axis from the image side surface of the third lens to the object side surface of the fourth lens. Satisfying 0 < (CP2+CP3) / (T23+T34) < 2, by controlling this formula within a reasonable range, the sum of the thicknesses of the second spacer and the third spacer is kept within a reasonable range, while the spacing distances of the second lens and the third lens, and the third lens and the fourth lens on the optical axis are kept within a reasonable range, so that the second spacer and the third spacer can better play an integrated role between adjacent lenses, improving the stability of the lens.

[0074] In exemplary embodiments, the optical imaging lens according to the present application can satisfy: 0.6 < EP12 / (SAG21+SAG22) < 1.1, where EP12 is the distance along the optical axis from the image side surface of the first spacer to the object side surface of the second spacer, SAG21 is the axial distance between the intersection of the object side surface of the second lens and the optical axis and the effective radius vertex of the object side surface of the second lens, and SAG22 is the axial distance between the intersection of the image side surface of the second lens and the optical axis and the effective radius vertex of the image side surface of the second lens. Satisfying 0.6 < EP12 / (SAG21+SAG22) < 1.1 keeps the sag of the object side surface and the sag of the image side surface of the second lens within a reasonable range, controls the curvature of both sides of the second lens, and facilitates the molding of the second lens.

[0075] In exemplary embodiments, the optical imaging lens according to the present application can satisfy: 0 < EP12 / f2 + EP23 / f3 < 0.7, where EP12 is the distance along the optical axis direction from the image side surface of the first spacer to the object side surface of the second spacer, EP23 is the distance along the optical axis direction from the image side surface of the second spacer to the object side surface of the third spacer, f2 is the effective focal length of the second lens, and f3 is the effective focal length of the third lens. Satisfying 0 < EP12 / f2 + EP23 / f3 < 0.7, by controlling the formula within a reasonable range, EP12 and EP23 can be kept within a reasonable range, which is equivalent to controlling the edge thickness of the second lens and the third lens, while constraining the effective focal length of the second lens and the third lens, which is conducive to controlling the light path of the second lens and the third lens and reducing the generation of stray light.

[0076] In exemplary embodiments, the optical imaging lens according to the present application can satisfy: -20 < EP23 / CT3-CP3 / T34 < 1, where EP23 is the distance along the optical axis direction from the image side surface of the second spacer to the object side surface of the third spacer, CT3 is the center thickness of the third lens on the optical axis, CP3 is the thickness of the third spacer along the optical axis, and T34 is the distance on the optical axis from the image side surface of the third lens to the object side surface of the fourth lens. Satisfying -20 < EP23 / CT3-CP3 / T34 < 1, by controlling the formula within a reasonable range, the size of the center thickness of the third lens and the thickness of the third spacer can be controlled, the edge thickness of the third lens can be controlled by controlling EP23, and then by adjusting the size of the edge thickness of the third lens, the thickness of the third spacer is indirectly adjusted, so that the thickness of the third spacer is within a reasonable range, which is conducive to the molding of the third spacer.

[0077] In exemplary embodiments, the optical imaging lens according to the present application can satisfy: -0.5 < (EP34 + CP4) / f4 < 1, where EP34 is the distance along the optical axis direction from the image side surface of the third spacer to the object side surface of the fourth spacer, CP4 is the thickness of the fourth spacer along the optical axis, and f4 is the effective focal length of the fourth lens. Satisfying -0.5 < (EP34 + CP4) / f4 < 1, by controlling the formula within a reasonable range, the edge thickness of the fourth lens, the effective focal length of the fourth lens, and the thickness of the fourth spacer can be controlled, which is conducive to the processing and molding of the fourth lens and the fourth spacer.

[0078] In the example embodiments, the optical imaging lens according to the present application can satisfy: 0 < ∑CP / ∑AT < 1, where ∑CP is the sum of the thicknesses of the first, second, third and fourth isolation members along the optical axis, and ∑AT is the sum of the air gaps between any two adjacent lenses among the first to fifth lenses along the optical axis. Satisfying 0 < ∑CP / ∑AT < 1 can control the spatial distribution of the isolation members and the lenses, reasonably distribute the optical power of each lens, ensure the uniformity between the isolation members and the overall structural strength, and improve the structural strength of the lens.

[0079] The optical imaging lens according to the example embodiments of the present application comprises a lens barrel and a lens group and an isolation member group arranged in the lens barrel, wherein the lens group comprises, in order from the object side to the image side along the optical axis, a first lens having a negative optical power, a second lens having a positive optical power, a third lens having a positive optical power, a fourth lens having an optical power, and a fifth lens having an optical power. The isolation member group can comprise at least one isolation member arranged between two adjacent lenses. The optical imaging lens according to the present application can satisfy: 2 < d0s / DT11 + d0m / DT52 < 4 and 0.7 < (D0s-DT11) / (D0m-DT52) < 1.4, where d0s is the inner diameter of the object side end surface of the lens barrel, d0m is the inner diameter of the image side end surface of the lens barrel, DT11 is the diameter of the light-transmitting portion of the object side surface of the first lens, DT52 is the diameter of the light-transmitting portion of the image side surface of the fifth lens, D0s is the outer diameter of the object side end surface of the lens barrel, and D0m is the outer diameter of the image side end surface of the lens barrel. Reasonably setting the inner diameters and outer diameters of the object side end surface and the image side end surface of the lens barrel and the diameters of the light-transmitting portions of the first lens and the fifth lens can help control the sizes of the non-light-transmitting portions and the light-transmitting portions of the first lens and the fifth lens within a reasonable range, reduce the difficulty of molding the lens, and reduce the overall molding risk of the lens group.

[0080] In the embodiments of the present application, at least one of the lens surfaces of each lens is a non-spherical lens surface, i.e., at least one of the object side surface of the first lens to the image side surface of the fifth lens is a non-spherical lens surface. The non-spherical lens has the characteristic that the curvature continuously changes from the center of the lens to the periphery of the lens. Unlike the spherical lens which has a constant curvature from the center of the lens to the periphery of the lens, the non-spherical lens has better curvature radius characteristics and has the advantages of improving the distortion aberration and improving the astigmatism aberration. After using the non-spherical lens, the aberration that occurs during imaging can be eliminated as much as possible, thereby improving the imaging quality. Alternatively, the object side surface and the image side surface of all the lenses among the first to fifth lenses can be non-spherical lens surfaces.

[0081] In the example embodiments, the above optical imaging lens can further comprise a filter for correcting color deviation and / or a protective glass for protecting the photosensitive elements located on the imaging surface.

[0082] The optical imaging lens according to the above-mentioned embodiments of the present application can adopt multiple lenses, for example, five lenses as mentioned above. By reasonably allocating the refractive power of each lens, the surface shape, and the arrangement of each spacer, etc., the span of each gear of the lens and the barrel is relatively uniform, the light converging ability is enhanced, and the imaging quality of the optical imaging lens is improved. However, it should be understood by those skilled in the art that the number of lenses constituting the optical imaging lens can be changed without departing from the technical solutions claimed by the present application, to obtain the various results and advantages described in the specification. For example, although five lenses are described as an example in the embodiments, the optical imaging lens is not limited to including five lenses. If necessary, the optical imaging lens can also include other numbers of lenses.

[0083] Specific embodiments of the optical imaging lens applicable to the above-mentioned embodiments will be further described below with reference to the accompanying drawings. Specifically, reference is made to Figures 2A-3D The optical imaging lens according to Embodiments 1 to 3 of the present application is described; reference is made to Figures 4A-5D The optical imaging lens according to Embodiments 4 to 6 of the present application is described; reference is made to Figures 6A-7D The optical imaging lens according to Embodiments 7 to 9 of the present application is described.

[0084] Example 1

[0085] Figure 2A The structural schematic diagram of the optical imaging lens 1001 according to Embodiment 1 of the present application is shown. As Figure 2A shown, the optical imaging lens 1001 includes a barrel P0, a lens group, and a spacer group. The optical imaging lens 1001 further includes a stop STO (not shown) arranged between the second lens and the third lens.

[0086] As Figure 2A shown, the lens group of the optical imaging lens 1001 includes, in order from the object side to the image side, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5. The first lens E1 has an object side surface S1 and an image side surface S2. The second lens E2 has an object side surface S3 and an image side surface S4. The third lens E3 has an object side surface S5 and an image side surface S6. The fourth lens E4 has an object side surface S7 and an image side surface S8. The fifth lens E5 has an object side surface S9 and an image side surface S10. The optical imaging lens 1001 further includes a filter (not shown) for correcting color deviation, which has an object side surface S11 and an image side surface S12. Light from an object passes through each surface S1 to S12 in order and is finally imaged on an imaging surface S13 (not shown).

[0087] Table 1 shows the basic parameter table of the lens group of the optical imaging lens 1001 of Embodiment 1, wherein the units of the curvature radius, the thickness / distance, and the effective focal length are all millimeters (mm).

[0088]

[0089] Table 1

[0090] In Embodiment 1, the object side surface and the image side surface of any one of the first lens E1 to the fifth lens E5 are aspherical surfaces, and the surface shape x of each aspherical surface can be defined by, but not limited to, the following aspherical surface formula:

[0091]

[0092] wherein x is the sag of the aspherical surface at a position along the optical axis at a height h, c is the paraxial curvature of the aspherical surface, c = 1 / R (i.e., the paraxial curvature c is the inverse of the curvature radius R in Table 1 above), k is the conic coefficient, and Ai is the correction coefficient of the i-th order of the aspherical surface. Table 2-1 and Table 2-2 give the high-order coefficients A4, A6, A8, A10, and A12 that can be used for each aspherical surface S1-S12 in Embodiment 1. 10 12 14 16 18 20 22 24 26 28 30 .

[0093] Face No. A4 A6 A8 A10 A12 A14 A16 S1 1.9190E+00 -5.9769E+00 1.5870E+01 -3.2454E+01 4.9736E+01 -5.6810E+01 4.8358E+01 S2 2.3497E+00 -1.0956E+01 1.6228E+02 -2.5233E+03 2.5923E+04 -1.7630E+05 8.2454E+05 S3 6.1326E-01 -4.8953E+00 1.3689E+01 3.9390E+02 -6.9901E+03 6.1683E+04 -3.4981E+05 S4 2.2918E+00 -1.6138E+02 8.1414E+03 -2.6109E+05 5.6937E+06 -8.7432E+07 9.6535E+08 S5 -1.8759E-01 1.1286E+01 -3.7551E+02 7.5707E+03 -1.0282E+05 9.8289E+05 -6.6783E+06 S6 -6.0743E+00 8.6170E+01 -1.2188E+03 1.4732E+04 -1.4045E+05 1.0125E+06 -5.4130E+06 S7 -5.9959E+00 8.1221E+01 -1.0025E+03 9.6759E+03 -6.9905E+04 3.7408E+05 -1.4834E+06 S8 1.4347E+00 -2.0713E+01 3.4550E+02 -3.8233E+03 2.8553E+04 -1.4939E+05 5.6071E+05 S9 2.4368E+00 -1.2894E+01 2.0631E+02 -2.4482E+03 1.8987E+04 -1.0098E+05 3.7997E+05 S10 9.8420E-01 -4.0428E+00 5.7484E+01 -4.7389E+02 2.5107E+03 -9.1727E+03 2.3816E+04

[0094] Table 2-1

[0095] Face No. A18 A20 A22 A24 A26 A28 A30 S1 -3.0617E+01 1.4315E+01 -4.8643E+00 1.1660E+00 -1.8664E-01 1.7886E-02 -7.7549E-04 S2 -2.7153E+06 6.3509E+06 -1.0490E+07 1.1956E+07 -8.9428E+06 3.9481E+06 -7.7929E+05 S3 1.3640E+06 -3.7428E+06 7.2305E+06 -9.6411E+06 8.4531E+06 -4.3878E+06 1.0219E+06 S4 -7.7435E+09 4.5144E+10 -1.8920E+11 5.5512E+11 -1.0820E+12 1.2580E+12 -6.6025E+11 S5 3.1919E+07 -1.0436E+08 2.2130E+08 -2.7343E+08 1.4910E+08 0.0000E+00 0.0000E+00 S6 2.1156E+07 -5.9307E+07 1.1552E+08 -1.4777E+08 1.1112E+08 -3.7059E+07 0.0000E+00 S7 4.3598E+06 -9.4490E+06 1.4885E+07 -1.6559E+07 1.2326E+07 -5.5069E+06 1.1168E+06 S8 -1.5289E+06 3.0351E+06 -4.3421E+06 4.3594E+06 -2.9130E+06 1.1625E+06 -2.0945E+05 S9 -1.0298E+06 2.0224E+06 -2.8574E+06 2.8362E+06 -1.8796E+06 7.4748E+05 -1.3500E+05 S10 -4.4577E+04 6.0305E+04 -5.8408E+04 3.9476E+04 -1.7674E+04 4.7089E+03 -5.6497E+02

[0096] Table 2-2

[0097] Table 3 shows the numerical values of the maximum half field of view Semi-FOV, the entrance pupil diameter EPD, and the effective focal length f of the optical imaging lens 1001.

[0098] Parameter Semi-FOV (°) EPD (mm) f (mm) Value 56.470 0.634 0.901

[0099] Table 3

[0100] As Figure 2A ​​​​​​​​​​As shown in Table 4, the units of the parameters in Table 4 are all millimeters (mm). The above spacers can block the extra light rays at the edges of the lens from entering, make the lens and the lens barrel better abut, and enhance the structural stability of the optical imaging lens 1001.

[0101] Parameter d1s d0s d0m D0s D0m EP01 CP1 Value 1.722 5.424 2.703 5.924 4.343 1.081 0.018 Parameter EP12 CP2 EP23 CP3 EP34 CP4 L Value 0.424 0.018 0.295 0.370 0.353 0.018 3.759

[0102] Table 4

[0103] Example 2

[0104] Figure 2B A structure diagram of an optical imaging lens 1002 according to Embodiment 2 of the present application is shown. In this embodiment and the following embodiments, part of the description similar to Embodiment 1 will be omitted for brevity.

[0105] As shown in Table 4, the units of the parameters in Table 4 are all millimeters (mm). The above spacers can block the extra light rays at the edges of the lens from entering, make the lens and the lens barrel better abut, and enhance the structural stability of the optical imaging lens 1001. Figure 2B As shown in Table 4, the units of the parameters in Table 4 are all millimeters (mm). The above spacers can block the extra light rays at the edges of the lens from entering, make the lens and the lens barrel better abut, and enhance the structural stability of the optical imaging lens 1001.

[0106] As shown in Table 4, the units of the parameters in Table 4 are all millimeters (mm). The above spacers can block the extra light rays at the edges of the lens from entering, make the lens and the lens barrel better abut, and enhance the structural stability of the optical imaging lens 1001. Figure 2B As shown in Table 4, the units of the parameters in Table 4 are all millimeters (mm). The above spacers can block the extra light rays at the edges of the lens from entering, make the lens and the lens barrel better abut, and enhance the structural stability of the optical imaging lens 1001.

[0107] Parameter d1s d0s d0m D0s D0m EP01 CP1 Value 1.740 5.424 2.703 5.924 4.343 1.071 0.018 Parameter EP12 CP2 EP23 CP3 EP34 CP4 L Value 0.424 0.018 0.535 0.018 0.471 0.018 3.759

[0108] Table 5

[0109] Example 3

[0110] Figure 2C A structural diagram of an optical imaging lens 1003 according to Embodiment 3 of the present application is shown.

[0111] As shown in Figure 2C , the optical imaging lens 1003 comprises a lens barrel P0, lens groups and spacer groups. The optical imaging lens 1003 further comprises a stop STO (not shown) arranged between the second lens and the third lens. The lens groups of the optical imaging lens 1003 are exactly the same as those of the optical imaging lens 1001 of Embodiment 1, and the basic parameters are shown in Tables 1 to 3, which will not be repeated here.

[0112] As shown in Figure 2C , the optical imaging lens 1003 further comprises four spacers, i.e. a first spacer P1, a second spacer P2, a third spacer P3 and a fourth spacer P4. The first spacer P1 is arranged on the image side of the first lens and at least partially in contact with the image side surface of the first lens; the second spacer P2 is arranged on the image side of the second lens and at least partially in contact with the image side surface of the second lens; the third spacer P3 is arranged on the image side of the third lens and at least partially in contact with the object side surface of the fourth lens; and the fourth spacer P4 is arranged on the image side of the fourth lens and at least partially in contact with the image side surface of the fourth lens. Table 6 shows the basic parameters of the spacers and the lens barrel of the optical imaging lens 1003, and the units of the parameters in Table 6 are millimeters (mm). The above-mentioned spacers can block the excess light rays at the edges of the lens from entering, make the lens and the lens barrel better abut, and enhance the structural stability of the optical imaging lens 1003.

[0113] Parameter d1s d0s d0m D0s D0m EP01 CP1 Value 1.710 5.364 2.710 5.924 3.996 1.071 0.018 Parameter EP12 CP2 EP23 CP3 EP34 CP4 L Value 0.424 0.018 0.010 0.655 0.353 0.018 3.759

[0114] Table 6

[0115] Figure 3A The on-axis chromatic aberration curves of the optical imaging lenses of Embodiments 1 to 3 are shown, which represent the deviation of light rays of different wavelengths from the converging focus point after passing through the lens. Figure 3B The astigmatism curves of the optical imaging lenses of Embodiments 1 to 3 are shown, which represent the meridional image surface curvature and sagittal image surface curvature. Figure 3C The distortion curves of the optical imaging lenses of Embodiments 1 to 3 are shown, which represent the distortion size values corresponding to different field angles. Figure 3D The lateral chromatic aberration curves of the optical imaging lenses of Embodiments 1 to 3 are shown, which represent the deviation of light rays on the imaging surface after passing through the lens. According toFigures 3A-3D It can be seen that the optical imaging lenses provided in Examples 1 to 3 can achieve good imaging quality.

[0116] Example 4

[0117] Figure 4A FIG. 2 shows a schematic structural diagram of an optical imaging lens 2001 according to Example 4 of the present application. Figure 4A As shown, the optical imaging lens 2001 includes a lens barrel P0, a lens group, and a spacer group. The optical imaging lens 2001 also includes an aperture stop STO (not shown) disposed between the second lens and the third lens.

[0118] like Figure 4A As shown, the lens group of the optical imaging lens 2001 includes, from the object side to the image side, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5. The first lens E1 has an object-side surface S1 and an image-side surface S2. The second lens E2 has an object-side surface S3 and an image-side surface S4. The third lens E3 has an object-side surface S5 and an image-side surface S6. The fourth lens E4 has an object-side surface S7 and an image-side surface S8. The fifth lens E5 has an object-side surface S9 and an image-side surface S10. The optical imaging lens 1001 also includes a filter (not shown) for correcting chromatic aberration. The filter has an object-side surface S11 and an image-side surface S12. Light from an object sequentially passes through each surface S1 to S12 and is ultimately imaged on an imaging surface S13 (not shown).

[0119] Table 7 shows the basic parameters of the lens assembly of the optical imaging lens 2001 of Example 4, where the units of curvature radius, thickness / distance, and effective focal length are all in millimeters (mm). Tables 8-1 and 8-2 show the high-order coefficients of the various aspherical mirror surfaces that can be used in Example 4, where the surface shape of each aspherical surface can be defined by formula (1) given in Example 1 above.

[0120]

[0121] Table 7

[0122]

[0123]

[0124] Table 8-1

[0125] Face No. A18 A20 A22 A24 A26 A28 A30 S1 7.5683E-02 -5.0477E-02 2.0779E-02 -5.5429E-03 9.3746E-04 -9.1677E-05 3.9568E-06 S2 -1.4068E+04 5.0559E+04 -9.2870E+04 1.0406E+05 -7.1661E+04 2.7955E+04 -4.7388E+03 S3 5.5863E+04 -9.9909E+04 1.2044E+05 -9.4688E+04 4.4858E+04 -1.0631E+04 6.6599E+02 S4 -9.4465E+08 4.3253E+09 -1.4236E+10 3.2800E+10 -5.0198E+10 4.5833E+10 -1.8891E+10 S5 3.3816E+07 7.1976E+06 -5.1937E+08 2.2148E+09 -4.7304E+09 5.3369E+09 -2.5360E+09 S6 1.5415E+07 -4.0280E+07 7.8404E+07 -1.1042E+08 1.0642E+08 -6.2794E+07 1.7094E+07 S7 3.8987E+07 -1.1285E+08 2.3688E+08 -3.4998E+08 3.4460E+08 -2.0278E+08 5.3907E+07 S8 2.2271E+05 -3.6972E+05 4.4573E+05 -3.7772E+05 2.1236E+05 -7.0792E+04 1.0533E+04 S9 6.9032E+01 -1.5549E+01 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S10 6.9856E+01 -3.1156E+01 5.8713E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00

[0126] Table 8-2

[0127] Table 9 shows the values ​​of the maximum half field of view Semi-FOV, entrance pupil diameter EPD and effective focal length f of the optical imaging lens 2001.

[0128] Parameter Semi-FOV (°) EPD (mm) f (mm) Value 56.580 0.598 0.856

[0129] Table 9

[0130] like Figure 4A As shown, the optical imaging lens 2001 also includes four spacers, namely a first spacer P1, a second spacer P2, a third spacer P3, and a fourth spacer P4. The first spacer P1 is placed on the image side of the first lens and is in at least partial contact with the image side surface of the first lens; the second spacer P2 is placed on the image side of the second lens and is in at least partial contact with the image side surface of the second lens; the third spacer P3 is placed on the image side of the third lens and is in at least partial contact with the object side surface of the fourth lens; and the fourth spacer P4 is placed on the image side of the fourth lens and is in at least partial contact with the image side surface of the fourth lens. Table 10 shows the basic parameters of the spacers and lens barrel of the optical imaging lens 2001. The units of each parameter in Table 10 are millimeters (mm). The above-mentioned spacers can block the entry of excess external light, allowing the lenses and lens barrel to better support each other, and enhancing the structural stability of the optical imaging lens 2001.

[0131] Parameter d1s d0s d0m D0s D0m EP01 CP1 Value 1.890 6.432 2.698 7.127 5.229 1.688 0.018 Parameter EP12 CP2 EP23 CP3 EP34 CP4 L Value 0.623 0.018 0.433 0.018 0.586 0.018 4.176

[0132] Table 10

[0133] Example 5

[0134] Figure 4B FIG2 shows a schematic structural diagram of an optical imaging lens 2002 according to Embodiment 5 of the present application.

[0135] like Figure 4B As shown, optical imaging lens 2002 includes a lens barrel P0, a lens assembly, and a spacer assembly. Optical imaging lens 2002 also includes an aperture stop STO (not shown) disposed between the second and third lenses. The lens assembly of optical imaging lens 2002 is identical to that of optical imaging lens 2001 in Example 1. Their basic parameters are detailed in Tables 7 to 9 and are not further detailed here.

[0136] like Figure 4BAs shown in Table 11, the optical imaging lens 2002 further includes four spacers, i.e., a first spacer P1, a second spacer P2, a third spacer P3, and a fourth spacer P4. The first spacer P1 is disposed on the image side of the first lens and at least partially contacts the image side surface of the first lens; the second spacer P2 is disposed on the image side of the second lens and at least partially contacts the image side surface of the second lens; the third spacer P3 is disposed on the image side of the third lens and at least partially contacts the object side surface of the fourth lens; and the fourth spacer P4 is disposed on the image side of the fourth lens and at least partially contacts the image side surface of the fourth lens. Table 11 shows a basic parameter table of the spacers and the lens barrel of the optical imaging lens 2002, and the units of the parameters in Table 11 are all millimeters (mm). The above spacers can block the extra light rays at the edges of the lens, make the lens better abut against the lens barrel, and enhance the structural stability of the optical imaging lens 2002.

[0137] Parameter d1s d0s d0m D0s D0m EP01 CP1 Value 1.850 6.432 2.698 7.127 4.674 1.688 0.018 Parameter EP12 CP2 EP23 CP3 EP34 CP4 L Value 0.623 0.018 0.433 0.018 0.586 0.018 4.176

[0138] Table 11

[0139] Example 6

[0140] Figure 4C As shown in Table 11, the optical imaging lens 2002 further includes four spacers, i.e., a first spacer P1, a second spacer P2, a third spacer P3, and a fourth spacer P4. The first spacer P1 is disposed on the image side of the first lens and at least partially contacts the image side surface of the first lens; the second spacer P2 is disposed on the image side of the second lens and at least partially contacts the image side surface of the second lens; the third spacer P3 is disposed on the image side of the third lens and at least partially contacts the object side surface of the fourth lens; and the fourth spacer P4 is disposed on the image side of the fourth lens and at least partially contacts the image side surface of the fourth lens. Table 11 shows a basic parameter table of the spacers and the lens barrel of the optical imaging lens 2002, and the units of the parameters in Table 11 are all millimeters (mm). The above spacers can block the extra light rays at the edges of the lens, make the lens better abut against the lens barrel, and enhance the structural stability of the optical imaging lens 2002.

[0141] As Figure 4C shown, the optical imaging lens 2003 includes a lens barrel P0, a lens group, and a spacer group. The optical imaging lens 2003 further includes a stop STO (not shown) disposed between the second lens and the third lens. The lens group of the optical imaging lens 2003 is exactly the same as the lens group of the optical imaging lens 2001 of Embodiment 1, and the basic parameters are shown in Tables 7 to 9, which will not be described herein.

[0142] As Figure 4C shown, the optical imaging lens 2003 includes a lens barrel P0, a lens group, and a spacer group. The optical imaging lens 2003 further includes a stop STO (not shown) disposed between the second lens and the third lens. The lens group of the optical imaging lens 2003 is exactly the same as the lens group of the optical imaging lens 2001 of Embodiment 1, and the basic parameters are shown in Tables 7 to 9, which will not be described herein.

[0143] Parameter d1s d0s d0m D0s D0m EP01 CP1 Value 1.866 6.232 2.698 6.927 4.674 1.688 0.018 Parameter EP12 CP2 EP23 CP3 EP34 CP4 L Value 0.423 0.277 0.373 0.018 0.370 0.284 4.176

[0144] Table 12

[0145] Figure 5A The axial chromatic aberration curves of the optical imaging lenses of Examples 4 to 6 are shown, which represent the deviation of light of different wavelengths from the focal point behind the lens. Figure 5B Astigmatism curves of the optical imaging lenses of Examples 4 to 6 are shown, which represent meridional field curvature and sagittal field curvature. Figure 5C The distortion curves of the optical imaging lenses of Examples 4 to 6 are shown, which represent the distortion values ​​corresponding to different field angles. Figure 5D The magnification chromatic aberration curves of the optical imaging lenses of Examples 4 to 6 are shown, which represent the deviations of different image heights on the imaging surface after the light passes through the lens. Figures 5A-5D It can be seen that the optical imaging lenses provided in Examples 4 to 6 can achieve good imaging quality.

[0146] Example 7

[0147] Figure 6A FIG. 3 shows a schematic structural diagram of an optical imaging lens 3001 according to Example 7 of the present application. Figure 6A As shown, the optical imaging lens 3001 includes a lens barrel P0, a lens group, and a spacer group. The optical imaging lens 3001 also includes an aperture stop STO (not shown) disposed between the second lens and the third lens.

[0148] like Figure 6A As shown, the lens group of the optical imaging lens 3001 includes, from the object side to the image side, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5. The first lens E1 has an object-side surface S1 and an image-side surface S2. The second lens E2 has an object-side surface S3 and an image-side surface S4. The third lens E3 has an object-side surface S5 and an image-side surface S6. The fourth lens E4 has an object-side surface S7 and an image-side surface S8. The fifth lens E5 has an object-side surface S9 and an image-side surface S10. The optical imaging lens 1001 also includes a filter (not shown) for correcting chromatic aberration. The filter has an object-side surface S11 and an image-side surface S12. Light from an object sequentially passes through each surface S1 to S12 and is ultimately imaged on an imaging surface S13 (not shown).

[0149] Table 13 shows the basic parameters of the lens assembly of the optical imaging lens 3001 of Example 7, where the units of curvature radius, thickness / distance, and effective focal length are all in millimeters (mm). Tables 14-1 and 14-2 show the high-order coefficients of the various aspherical mirror surfaces that can be used in Example 7, where the surface shape of each aspherical surface can be defined by formula (1) given in Example 1 above.

[0150]

[0151] Table 13

[0152] Face No. A4 A6 A8 A10 A12 A14 A16 S1 1.9190E+00 -5.9769E+00 1.5870E+01 -3.2454E+01 4.9736E+01 -5.6810E+01 4.8358E+01 S2 2.3497E+00 -1.0956E+01 1.6228E+02 -2.5233E+03 2.5923E+04 -1.7630E+05 8.2454E+05 S3 6.1326E-01 -4.8954E+00 1.3690E+01 3.9386E+02 -6.9897E+03 6.1680E+04 -3.4980E+05 S4 2.2918E+00 -1.6138E+02 8.1413E+03 -2.6108E+05 5.6936E+06 -8.7429E+07 9.6531E+08 S5 -1.8759E-01 1.1286E+01 -3.7551E+02 7.5707E+03 -1.0282E+05 9.8289E+05 -6.6783E+06 S6 -6.0743E+00 8.6170E+01 -1.2188E+03 1.4732E+04 -1.4045E+05 1.0125E+06 -5.4130E+06 S7 -5.9959E+00 8.1221E+01 -1.0025E+03 9.6759E+03 -6.9905E+04 3.7408E+05 -1.4834E+06 S8 1.4347E+00 -2.0713E+01 3.4550E+02 -3.8233E+03 2.8553E+04 -1.4939E+05 5.6071E+05 S9 2.4368E+00 -1.2894E+01 2.0631E+02 -2.4482E+03 1.8987E+04 -1.0098E+05 3.7997E+05 S10 9.8420E-01 -4.0428E+00 5.7484E+01 -4.7389E+02 2.5107E+03 -9.1727E+03 2.3816E+04

[0153] Table 14-1

[0154]

[0155]

[0156] Table 14-2

[0157] Table 15 shows the numerical values of the maximum half field angle Semi-FOV, entrance pupil diameter EPD and effective focal length f of the optical imaging lens 3001.

[0158] Parameter Semi-FOV (°) EPD (mm) f (mm) Value 55.676 0.652 0.925

[0159] Table 15

[0160] As shown in Table 16, the units of the parameters in Table 16 are millimeters (mm). Figure 6A The optical imaging lens 3001 further includes four spacers, i.e., a first spacer P1, a second spacer P2, a third spacer P3 and a fourth spacer P4. The first spacer P1 is disposed on the image side of the first lens and at least partially contacts the image side surface of the first lens; the second spacer P2 is disposed on the image side of the second lens and at least partially contacts the image side surface of the second lens; the third spacer P3 is disposed on the image side of the third lens and at least partially contacts the object side surface of the fourth lens; and the fourth spacer P4 is disposed on the image side of the fourth lens and at least partially contacts the image side surface of the fourth lens. Table 16 shows the basic parameter table of the spacers and the lens barrel of the optical imaging lens 3001, and the units of the parameters in Table 16 are millimeters (mm). The above spacers can block the entry of external excess light, make the lens and the lens barrel better abut, and enhance the structural stability of the optical imaging lens 3001.

[0161] Parameter d1s d0s d0m D0s D0m EP01 CP1 Value 1.618 4.926 2.420 5.266 3.781 1.040 0.018 Parameter EP12 CP2 EP23 CP3 EP34 CP4 L Value 0.452 0.018 0.345 0.334 0.354 0.018 3.508

[0162] Table 16

[0163] Example 8

[0164] Figure 6B Figure 13 shows a structural schematic diagram of an optical imaging lens 3002 according to Embodiment 8 of the present application.

[0165] As shown in Table 16, the units of the parameters in Table 16 are millimeters (mm). Figure 6BAs shown, optical imaging lens 3002 includes a lens barrel P0, a lens assembly, and a spacer assembly. Optical imaging lens 3002 also includes an aperture stop STO (not shown) disposed between the second and third lenses. The lens assembly of optical imaging lens 3002 is identical to that of optical imaging lens 3001 in Example 1. Their basic parameters are detailed in Tables 13 to 15 and are not further detailed here.

[0166] like Figure 6B As shown, the optical imaging lens 3002 also includes four spacers, namely a first spacer P1, a second spacer P2, a third spacer P3, and a fourth spacer P4. The first spacer P1 is placed on the image side of the first lens and is in at least partial contact with the image side surface of the first lens; the second spacer P2 is placed on the image side of the second lens and is in at least partial contact with the image side surface of the second lens; the third spacer P3 is placed on the image side of the third lens and is in at least partial contact with the object side surface of the fourth lens; and the fourth spacer P4 is placed on the image side of the fourth lens and is in at least partial contact with the image side surface of the fourth lens. Table 17 shows the basic parameters of the spacers and lens barrel of the optical imaging lens 3002. The units of each parameter in Table 17 are millimeters (mm). The above-mentioned spacers can block excess light from the edge of the lens from entering, allowing the lens and the lens barrel to better support each other and enhancing the structural stability of the optical imaging lens 3002.

[0167] Parameter d1s d0s d0m D0s D0m EP01 CP1 Value 1.610 4.926 2.496 5.266 4.075 1.040 0.018 Parameter EP12 CP2 EP23 CP3 EP34 CP4 L Value 0.452 0.018 0.345 0.334 0.359 0.018 3.573

[0168] Table 17

[0169] Example 9

[0170] Figure 6C A schematic structural diagram of an optical imaging lens 3003 according to Example 9 of the present application is shown.

[0171] like Figure 6C As shown, optical imaging lens 3003 includes a lens barrel P0, a lens assembly, and a spacer assembly. Optical imaging lens 3003 also includes an aperture stop STO (not shown) disposed between the second and third lenses. The lens assembly of optical imaging lens 3003 is identical to that of optical imaging lens 3001 in Example 1. Their basic parameters are detailed in Tables 13 to 15 and are not further detailed here.

[0172] like Figure 6CAs shown, the optical imaging lens 3003 further comprises four spacers, i.e., a first spacer P1, a second spacer P2, a third spacer P3 and a fourth spacer P4. The first spacer P1 is disposed on the image side of the first lens and at least partially contacts the image side surface of the first lens; the second spacer P2 is disposed on the image side of the second lens and at least partially contacts the image side surface of the second lens; the third spacer P3 is disposed on the image side of the third lens and at least partially contacts the object side surface of the fourth lens; and the fourth spacer P4 is disposed on the image side of the fourth lens and at least partially contacts the image side surface of the fourth lens. Table 18 shows the basic parameter table of the spacers and the lens barrel of the optical imaging lens 3003, and the unit of each parameter in Table 18 is millimeter (mm). The above-mentioned spacers can block the excess light rays at the edge of the lens, make the lens and the lens barrel better abut, and enhance the structural stability of the optical imaging lens 3003.

[0173] Parameter d1s d0s d0m D0s D0m EP01 CP1 Value 1.620 5.084 2.423 5.444 4.052 1.040 0.018 Parameter EP12 CP2 EP23 CP3 EP34 CP4 L Value 0.452 0.018 0.345 0.334 0.354 0.018 3.523

[0174] Table 18

[0175] Figure 7A The on-axis chromatic aberration curves of the optical imaging lenses of Embodiments 7 to 9 are shown, which represent the deviation of light rays of different wavelengths from the converging focal point after passing through the lens. Figure 7B The astigmatism curves of the optical imaging lenses of Embodiments 7 to 9 are shown, which represent the meridional image surface curvature and sagittal image surface curvature. Figure 7C The distortion curves of the optical imaging lenses of Embodiments 7 to 9 are shown, which represent the distortion size values corresponding to different field angles. Figure 7D The lateral chromatic aberration curves of the optical imaging lenses of Embodiments 7 to 9 are shown, which represent the deviation of light rays on the imaging plane after passing through the lens. According to the formula Figures 7A-7D It can be seen that the optical imaging lenses of Embodiments 7 to 9 can achieve good imaging quality.

[0176] In summary, the optical imaging lenses of Embodiments 1 to 9 satisfy the relationships shown in Table 19.

[0177] Conditional / Example 1 2 3 4 5 6 7 8 9 fno x tan (Semi-FOV) 2.1427 2.1427 2.1427 2.1671 2.1671 2.1671 2.0792 2.0792 2.0792 (D0m - d0m) / DT52 0.8145 0.8145 0.6387 1.1865 0.9263 0.9263 0.6753 0.7835 0.8083 (d0s - d1s) / f1 -2.4449 -2.4328 -2.4130 -3.8110 -3.8446 -3.6632 -2.1470 -2.1520 -2.2478 f / (L - TD) 2.4038 2.4038 2.4038 3.9995 3.9995 3.9995 7.4469 4.8885 6.6444 d0s / d0m 2.0068 2.0068 1.9794 2.3840 2.3840 2.3099 2.0356 1.9737 2.0984 d0s / DT11+d0m / DT52 2.8858 2.8858 2.8722 3.0024 3.0024 2.9484 2.6541 2.6918 2.7022 (D0s-DT11) / (D0m-DT52) 1.0345 1.0345 1.2156 1.1065 1.3482 1.2694 1.0629 0.9111 1.0088 EP01 / (R1+R2) 0.1549 0.1535 0.1535 0.8226 0.8226 0.8226 0.1490 0.1490 0.1491 (CP2+CP3) / (T23+T34) 0.9694 0.0899 1.6819 0.0734 0.0734 0.6022 0.8797 0.8797 0.8797 EP12 / (SAG21+SAG22) 0.9607 0.9607 0.9607 0.9801 0.9801 0.6655 1.0248 1.0248 1.0248 EP12 / f2+EP23 / f3 0.1362 0.1815 0.0823 0.5220 0.5220 0.4092 0.1510 0.1510 0.1510 EP23 / CT3-CP3 / T34 -9.5241 0.6614 -17.9737 0.1177 0.1177 0.0193 -8.4304 -8.4304 -8.4304 (EP34+CP4) / f4 0.4290 0.5648 0.4290 -0.2424 -0.2424 -0.2625 0.4238 0.4295 0.4238 ∑CP / ∑AT 0.5673 0.0963 0.9489 0.0602 0.0602 0.4996 0.5193 0.5193 0.5193

[0178] Table 19

[0179] The present application also provides an imaging device, and the electronic photosensitive element thereof can be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS). The imaging device can be a separate imaging equipment such as a digital camera, or an imaging module integrated on a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens described above.

[0180] The above description is only the preferred embodiment of the present application and the explanation of the technical principles. It should be understood by those skilled in the art that the scope of the protection of the present application is not limited to the technical solutions formed by the specific combinations of the above technical features. It should also cover other technical solutions formed by the combinations of the above technical features or their equivalent features without departing from the concept of the present application. For example, the technical solutions formed by the mutual replacements of the above features and the technical features disclosed in the present application (but not limited to) with similar functions.

Claims

1. An optical imaging lens, characterized in that: Comprising: A lens barrel, a lens group and an isolator group disposed within the lens barrel, wherein, The lens group sequentially includes, from the object side to the image side along the optical axis: A first lens with a negative optical power, whose image side is concave; A second lens with a positive optical power, whose object side is convex and image side is concave; A third lens with a positive optical power, whose object side is convex and image side is convex; A fourth lens with a positive or negative optical power, whose object side is convex; and A fifth lens with a positive or negative optical power, whose image side is convex; The isolator group includes at least one isolator disposed between two adjacent lenses; The number of lenses with optical power in the optical imaging lens is five; The f-number fno of the optical imaging lens and the maximum semi-field angle Semi-FOV of the optical imaging lens satisfy: 2 < fno × tan(Semi-FOV) ≤ 2.1671; and The optical imaging lens further satisfies: 0.9111 ≤ (D0s - DT11) / (D0m - DT52) ≤ 1.3482, where D0s is the outer diameter of the object-side end face of the lens barrel, D0m is the outer diameter of the image-side end face of the lens barrel, DT11 is the diameter of the light-transmitting part of the object side of the first lens, and DT52 is the diameter of the light-transmitting part of the image side of the fifth lens.

2. The optical imaging lens according to claim 1, wherein: The isolator group includes a first isolator disposed between the first lens and the second lens and at least partially contacting the image side of the first lens; The optical imaging lens satisfies: -3.8446 ≤ (d0s - d1s) / f1 ≤ -2.1470, where d0s is the inner diameter of the object-side end face of the lens barrel, d1s is the inner diameter of the object side of the first isolator, and f1 is the effective focal length of the first lens.

3. The optical imaging lens according to claim 1, wherein, The optical imaging lens satisfies: 2.4038 ≤ f / (L - TD) ≤ 7.4469, where f is the effective focal length of the optical imaging lens, L is the maximum height of the lens barrel along the optical axis direction, and TD is the distance on the optical axis from the object side of the first lens to the image side of the fifth lens.

4. The optical imaging lens according to claim 1, wherein, The optical imaging lens satisfies: 1.9 < d0s / d0m ≤ 2.3840, where d0s is the inner diameter of the object-side end face of the lens barrel and d0m is the inner diameter of the image-side end face of the lens barrel.

5. The optical imaging lens according to claim 1, wherein, The optical imaging lens satisfies: 2.6541 ≤ d0s / DT11 + d0m / DT52 ≤ 3.0024, where d0s is the inner diameter of the object-side end face of the lens barrel, d0m is the inner diameter of the image-side end face of the lens barrel, DT11 is the diameter of the light-transmitting part of the object side of the first lens, and DT52 is the diameter of the light-transmitting part of the image side of the fifth lens.

6. The optical imaging lens according to claim 2, wherein, An outer diameter D0m of the image-side end surface of the lens barrel, an inner diameter d0m of the image-side end surface of the lens barrel, and a diameter DT52 of the light-transmitting portion of the image-side surface of the fifth lens satisfy the following relationship: 0.6387≤(D0m-d0m) / DT52≤1.1865.

7. The optical imaging lens according to any one of claims 1, 3 to 6, wherein: The spacer assembly includes a first spacer disposed between the first lens and the second lens and in at least partial contact with the image side surface of the first lens; The optical imaging lens satisfies the following condition: 0.1490≤EP01 / (R1+R2)≤0.8226, where EP01 is the distance from the object-side end face of the lens barrel to the object-side face of the first spacer along the optical axis, R1 is the curvature radius of the object-side face of the first lens, and R2 is the curvature radius of the image-side face of the first lens.

8. The optical imaging lens according to any one of claims 1 to 6, wherein: The isolation member group includes: a second spacer disposed between the second lens and the third lens and in at least partial contact with the image-side surface of the second lens; and a third spacer, disposed between the third lens and the fourth lens and at least partially in contact with the object-side surface of the fourth lens; The optical imaging lens satisfies the following condition: 0<(CP2+CP3) / (T23+T34)≤1.6819, where CP2 is the thickness of the second spacer along the optical axis, CP3 is the thickness of the third spacer along the optical axis, T23 is the distance from the image side surface of the second lens to the object side surface of the third lens on the optical axis, and T34 is the distance from the image side surface of the third lens to the object side surface of the fourth lens on the optical axis.

9. The optical imaging lens according to any one of claims 1, 3 to 6, wherein: The isolation member group includes: a first spacer disposed between the first lens and the second lens and in at least partial contact with the image-side surface of the first lens; and a second spacer disposed between the second lens and the third lens and in at least partial contact with the image-side surface of the second lens; and The optical imaging lens satisfies the following: 0.6655≤EP12 / (SAG21+SAG22)≤1.0248, wherein EP12 is the distance from the image side surface of the first spacer to the object side surface of the second spacer along the optical axis, SAG21 is the on-axis distance between the intersection of the object side surface of the second lens and the optical axis and the vertex of the effective radius of the object side surface of the second lens, and SAG22 is the on-axis distance between the intersection of the image side surface of the second lens and the optical axis and the vertex of the effective radius of the image side surface of the second lens.

10. The optical imaging lens according to any one of claims 1, 3 to 6, wherein: The isolation member group further includes: a first spacer disposed between the first lens and the second lens and in at least partial contact with the image side surface of the first lens; a second spacer disposed between the second lens and the third lens and in at least partial contact with the image-side surface of the second lens; and a third spacer, disposed between the third lens and the fourth lens and at least partially in contact with the object-side surface of the fourth lens; The optical imaging lens satisfies: 0.0823≤EP12 / f2+EP23 / f3≤0.5220, wherein EP12 is the distance from the image side surface of the first spacer to the object side surface of the second spacer along the optical axis, EP23 is the distance from the image side surface of the second spacer to the object side surface of the third spacer along the optical axis, f2 is the effective focal length of the second lens, and f3 is the effective focal length of the third lens.

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