Optical imaging lens

Abstract

The utility model 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; f < no > * tan (Semi-FOV) < lt >; 2.5); the outer diameter D0m of the image-side end face of the lens barrel, the inner diameter d0m of the image-side end face of the lens barrel and the diameter DT52 of the light-transmitting part of the image-side face of the fifth lens meet the following conditions: 0.5 lt; (D0m-d0m) / DT52lt, (D0m-d0m And 1.5.

Description

Technical Field

[0001] This application relates to the field of optical elements, and specifically, to an optical imaging lens. Background Art

[0002] In recent years, with the improvement of people's living standards, unmanned aerial vehicles (UAVs) have gradually entered the public's field of vision. To better improve people's UAV usage experience, the development of UAV automation and intelligence is inevitable. Among them, obstacle avoidance technology is one of the key links to achieve this goal. A perfect obstacle avoidance system can reduce personal injuries or UAV damages caused by operational errors. As a core component of obstacle avoidance technology, the obstacle avoidance lens will be fully applied along with the development of intelligent UAVs, and has broad application prospects.

[0003] Obstacle avoidance lenses generally adopt large-aperture and ultra-wide-angle lenses. Such lenses are often assembled in an inverted manner. That is to say, the last lens is assembled first. If the design of the diameter of the light-transmitting part and the non-light-transmitting part of the last lens is unreasonable, many problems will occur. For example, if the diameter of the non-light-transmitting part is too short, it will lead to insufficient length of the bearing position, and then lead to problems of unstable assembly. Another example is that if the diameter of the non-light-transmitting part is too long, it will cause problems of surface shape change during the molding of the lens, and even make it difficult to mold the end of the entire lens. Therefore, it is of great practical significance to design a large-aperture and ultra-wide-angle lens with good assembly stability and formability. Summary of the Utility Model

[0004] In the first aspect of this application, there is provided such an optical imaging lens, which includes: a lens barrel, and a lens group and an isolation member group disposed in the lens barrel. Among them, the lens group includes, in order from the object side to the image side along the optical axis: a first lens with negative optical power; a second lens with positive optical power; a third lens with positive optical power; a fourth lens with optical power; and a fifth lens with optical power; the isolation member group includes at least one isolation member disposed between two adjacent lenses; and 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) < 2.5; and the outer diameter D0m of the image-side end face of the lens barrel, the inner diameter d0m of the image-side end face 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.

[0005] In one embodiment, the isolation member group includes a first isolation member disposed between the first lens and the second lens and at least partially contacting the image-side surface of the first lens; the optical imaging lens satisfies: -5 < (d0s - d1s) / f1 < -2, 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 surface of the first isolation member, and f1 is the effective focal length of the first lens.

[0006] In one embodiment, the optical imaging lens satisfies: 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 direction, and TD is the distance on the optical axis from the object side surface of the first lens to the image side surface of the fifth lens.

[0007] In one embodiment, the optical imaging lens satisfies: 1.9 < d0s / d0m < 2.5, 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.

[0008] In one embodiment, the optical imaging lens satisfies: 2 < d0s / DT11 + d0m / DT52 < 4, 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 surface of the first lens, and DT52 is the diameter of the light-transmitting part of the image side surface of the fifth lens.

[0009] In one embodiment, the optical imaging lens satisfies: 0.7 < (D0s - DT11) / (D0m - DT52) < 1.4, 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 surface of the first lens, and DT52 is the diameter of the light-transmitting part of the image side surface of the fifth lens.

[0010] In one embodiment, the spacer group includes a first spacer disposed between the first lens and the second lens and at least partially contacting the image side surface of the first lens; the optical imaging lens satisfies: 0 < EP01 / (R1 + R2) < 1, where EP01 is the distance on the optical axis from the object side end face of the lens barrel to the object side surface of the first spacer, R1 is the curvature radius of the object side surface of the first lens, and R2 is the curvature radius of the image side surface of the first lens.

[0011] In one embodiment, the spacer group includes: a second spacer disposed between the second lens and the third lens and at least partially contacting 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 contacting the object side surface of the fourth lens; the optical imaging lens satisfies: 0 < (CP2 + CP3) / (T23 + T34) < 2, where CP2 is the thickness of the second spacer along the optical axis direction, CP3 is the thickness of the third spacer along the optical axis direction, 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.

[0012] In one embodiment, the spacer group includes: a first spacer disposed between the first lens and the second lens and at least partially in contact with the image side 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 of the second lens; and the optical imaging lens satisfies: 0.6 < EP12 / (SAG21 + SAG22) < 1.1, where EP12 is the distance along the optical axis from the image side of the first spacer to the object side of the second spacer, SAG21 is the axial distance between the intersection of the object side of the second lens and the optical axis and the vertex of the effective radius of the object side of the second lens, and SAG22 is the axial distance between the intersection of the image side of the second lens and the optical axis and the vertex of the effective radius of the image side of the second lens.

[0013] In one embodiment, the spacer group further includes: a first spacer disposed between the first lens and the second lens and at least partially in contact with the image side 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 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 of the fourth lens; the optical imaging lens satisfies: 0 < EP12 / f2 + EP23 / f3 < 0.7, where EP12 is the distance along the optical axis from the image side of the first spacer to the object side of the second spacer, EP23 is the distance along the optical axis from the image side of the second spacer to the object side 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.

[0014] In one embodiment, the spacer group includes: a second spacer disposed between the second lens and the third lens and at least partially in contact with the image side 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 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 of the second spacer to the object side 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 of the third lens to the object side of the fourth lens.

[0015] In one embodiment, the spacer group includes: a third spacer disposed between the third lens and the fourth lens and at least partially in contact with the object side 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 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 of the third spacer to the object side 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.

[0016] In one embodiment, the spacer group includes: a first spacer disposed between the first lens and the second lens and at least partially contacting the image side surface of the first lens; a second spacer disposed between the second lens and the third lens and at least partially contacting the image side surface of the second lens; a third spacer disposed between the third lens and the fourth lens and at least partially contacting 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 contacting 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 direction, and ∑AT is the sum of the air spaces on the optical axis between any two adjacent lenses among the first lens to the fifth lens.

[0017] The second aspect of the present application provides such an optical imaging lens, which includes: a lens barrel and a lens group and a spacer group disposed in the lens barrel, where 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; a second lens with a positive optical power; a third lens with a positive optical power; a fourth lens with an optical power; and a fifth lens with an optical power. The spacer group may include at least one spacer disposed between two adjacent lenses; the optical imaging lens satisfies: 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 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 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 face of the lens barrel, and D0m is the outer diameter of the image side end face of the lens barrel.

[0018] The present application provides a five-piece optical imaging lens. The optical powers of the respective lenses are reasonably set and satisfy 2 < fno × tan(Semi-FOV) < 2.5, and it has the characteristics of a large aperture and an ultra-wide angle. Such lenses are often assembled in an inverted manner. When the ratio of the diameter of the non-transmissive part to the diameter of the transmissive part of the fifth lens is relatively large, it means that the diameter of the non-transmissive part is too long, which will cause the surface shape to change during the molding of the fifth lens and even make it difficult to mold the end of the lens. When the ratio of the diameter of the non-transmissive part to the diameter of the transmissive part of the fifth lens is relatively small, it means that the diameter of the non-transmissive part of the fifth lens is too short, which will lead to insufficient length of the bearing position and further cause problems with unstable assembly. The present application restricts the relationship between the inner and outer diameters of the image side end of the lens barrel and the diameter of the transmissive 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-transmissive part to the diameter of the transmissive part of the fifth lens tends to a reasonable range. On the one hand, it can avoid the problem of unstable assembly caused by too short a diameter of the non-transmissive part of the fifth lens and insufficient length of the bearing position. On the other hand, it can fully avoid the problem of surface shape change during molding and difficulty in molding the end of the lens caused by too long a diameter of the non-transmissive part of the fifth lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Other features, objects, and advantages of the present application will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0020] Figure 1 Shows a structural layout diagram of an optical imaging lens according to the present application and a schematic diagram of some parameters;

[0021] Figure 2A Shows a schematic structural diagram of the optical imaging lens according to Embodiment 1 of the present application;

[0022] Figure 2B Shows a schematic structural diagram of the optical imaging lens according to Embodiment 2 of the present application;

[0023] Figure 2C Shows a schematic structural diagram of the optical imaging lens according to Embodiment 3 of the present application;

[0024] FIG. 3A to FIG. 3D Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens according to Embodiments 1 to 3 of the present application;

[0025] Figure 4A Shows a schematic structural diagram of the optical imaging lens according to Embodiment 4 of the present application;

[0026] Figure 4BA schematic structural diagram of an optical imaging lens according to Embodiment 5 of the present application is shown;

[0027] Figure 4C A schematic structural diagram of an optical imaging lens according to Embodiment 6 of the present application is shown;

[0028] FIG. 5A to FIG. 5D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens according to Embodiment 4 to Embodiment 6 of the present application are respectively shown;

[0029] Fig. 6A A schematic structural diagram of an optical imaging lens according to Embodiment 7 of the present application is shown;

[0030] Figure 6B A schematic structural diagram of an optical imaging lens according to Embodiment 8 of the present application is shown;

[0031] Figure 6C A schematic structural diagram of an optical imaging lens according to Embodiment 9 of the present application is shown;

[0032] FIG. 7A to FIG. 7D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lenses according to Embodiments 7 to 9 of the present application are respectively shown;

[0033] Fig. 8A A partial structural schematic diagram of an optical imaging lens according to the present application is shown when fno×tan(Semi-FOV)=2.14 and (D0m-d0m) / DT52=0.81;

[0034] Figure 8B Shows Fig. 8A A curve diagram of a surface shape change of the image side surface of the fifth lens of the optical imaging lens;

[0035] Fig.9A A schematic diagram of a local structure of an optical imaging lens according to the present application when fno×tan(Semi-FOV)=3 and (D0m-d0m) / DT52=2 is shown;

[0036] Fig. 9B Shows Fig.9A A curve diagram of a surface shape change of the image side surface of the fifth lens of the optical imaging lens;

[0037] Fig. 10A A schematic diagram of local strain of the optical imaging lens according to the present application when fno×tan(Semi-FOV)=2.16 and (D0m-d0m) / DT52=1.2 is shown; and

[0038] Fig. 10BA schematic diagram of local strain of the optical imaging lens according to the present application is shown when fno×tan(Semi-FOV)=3 and (D0m-d0m) / DT52=0.1. DETAILED DESCRIPTION

[0039] In order to better understand the present application, a more detailed description will be made of various aspects of the present application with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of exemplary embodiments of the present application, and are not intended to limit the scope of the present application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0040] It should be noted that in this specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the features. Therefore, without departing from the teaching of the present application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0041] In the drawings, the thickness, size and shape of the lenses have been slightly exaggerated for ease of explanation. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to the shapes of the spherical or aspherical surfaces shown in the drawings. The drawings are only examples and are not drawn strictly to scale.

[0042] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens close to the object is called the object side of the lens, and the surface of each lens close to the imaging plane is called the image side of the lens.

[0043] It should also be understood that the terms "comprises", "including", "having", "includes" and / or "comprising", when used in this specification, indicate the presence of the stated features, elements and / or components, but do not exclude the presence or addition of one or more other features, elements, components and / or combinations thereof. In addition, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire listed features rather than modifying the individual elements in the list. In addition, when describing embodiments of the present application, "may" is used to mean "one or more embodiments of the present application". And, the term "exemplary" is intended to refer to an example or illustration.

[0044] Unless otherwise defined, all terms (including technical terms and scientific terms) used in this article have the same meaning as those commonly understood by ordinary technicians in the field to which this application belongs. It should also be understood that terms (such as terms defined in commonly used dictionaries) should be interpreted as having the same meaning as their meaning in the context of the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined in this article.

[0045] 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 the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope 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 belong to the protection scope of the present application. For example, the lens groups, lens barrels and spacers in the various embodiments of the present application can be combined arbitrarily, and are not limited to the lens groups in one embodiment being only combined with the lens barrels, spacers, etc. of the embodiment.

[0046] The present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments. Figure 1 The structure arrangement diagram of an optical imaging lens according to the present application and a schematic diagram of some parameters are shown. Those skilled in the art should understand that some parameters of lenses 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 It is 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 isolating member along the optical axis, CP2 is the thickness of the second isolating member along the optical axis, CP3 is the thickness of the third isolating member along the optical axis, CP4 is the thickness of the fourth isolating member 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 isolating member along the optical axis, EP12 is the distance from the image side face of the first isolating member to the object side face of the second isolating member along the optical axis, EP23 is the distance from the image side face of the second isolating member to the object side face of the third isolating member 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 isolating member.

[0047] According to an exemplary embodiment of the present application, an optical imaging lens may include a lens barrel, a lens group, and an isolator group disposed within the lens barrel. The lens group may sequentially include, 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 a positive or negative optical power, and a fifth lens having a positive or negative optical power.

[0048] In an exemplary embodiment, the isolator group of the optical imaging lens may include at least one of a first isolator, a second isolator, a third isolator, and a fourth isolator. The first isolator is disposed between the first lens and the second lens and at least partially contacts the image side surface of the first lens. The second isolator is disposed between the second lens and the third lens and at least partially contacts the image side surface of the second lens. The third isolator is disposed between the third lens and the fourth lens and at least partially contacts the object side surface of the fourth lens. The fourth isolator is disposed between the fourth lens and the fifth lens and at least partially contacts the image side surface of the fourth lens.

[0049] It should be understood that the present application does not specifically limit the number of isolators. Any number of isolators may be included between any two lenses, and any number of isolators may also be included in the entire optical imaging lens. The isolators help the optical imaging lens intercept redundant refracted and reflected light paths, reducing the generation of stray light and ghost images. Adding auxiliary support between the isolators and the lens barrel is beneficial to improving problems such as poor assembly stability and low performance yield caused by large step differences between lenses.

[0050] In an exemplary embodiment, the optical imaging lens may further include a diaphragm for restricting the light beam to further improve the imaging quality of the optical lens. Exemplarily, the diaphragm may be disposed between the second lens and the third lens. The diaphragm is beneficial for converging the light entering the optical lens, reducing the maximum clear aperture of the optical lens, and reducing the assembly sensitivity of the system. However, it should be noted that the position of the diaphragm disclosed herein is only an example and not a limitation; in alternative embodiments, the diaphragm may also be disposed at other positions according to actual needs.

[0051] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 2 < fno × tan(Semi-FOV) < 2.5, where fno is the f-number of the optical imaging lens, and Semi-FOV is the maximum semi-field of view angle of the optical imaging lens. Satisfying 2 < fno × tan(Semi-FOV) < 2.5 endows the optical lens of the present application with the characteristics of a large aperture and an ultra-wide angle.

[0052] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.5 < (D0m - d0m) / DT52 < 1.5, where 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, 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 and the inner diameter of the image-side end face of the lens barrel determines to a certain extent the size of the non-light-transmitting portion of the fifth lens. Satisfying 0.5 < (D0m - d0m) / DT52 < 1.5 is beneficial for the ratio of the diameter of the non-light-transmitting portion to the diameter of the light-transmitting portion of the fifth lens to be within a reasonable range. On the one hand, it can avoid the problem of unstable assembly caused by the too short diameter of the non-light-transmitting portion of the fifth lens and the insufficient length of the bearing position. On the other hand, it can fully avoid the problem of surface shape change during molding and the difficulty in molding the tail end of the lens caused by the too long diameter of the non-light-transmitting portion of the fifth lens.

[0053] The optical imaging lens according to an exemplary embodiment of the present application includes: a lens barrel, and a lens group and a spacer group disposed in the lens barrel. Among them, 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; a second lens with a positive optical power; a third lens with a positive optical power; a fourth lens with an optical power; and a fifth lens with an optical power. The spacer group may include at least one spacer disposed between two adjacent lenses; 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) < 2.5. That is to say, the optical lens of the present application has the characteristics of large aperture and ultra-wide angle. Such lenses are often assembled in a flip-chip manner. When the ratio of the diameter of the non-light-transmitting portion to the diameter of the light-transmitting portion of the fifth lens is large, it means that the diameter of the non-light-transmitting portion is too long, which will cause a change in the surface shape of the fifth lens during molding, and even make it difficult to mold the tail end of the lens; while when the ratio of the diameter of the non-light-transmitting portion to the diameter of the light-transmitting portion of the fifth lens is small, it means that the diameter of the non-light-transmitting portion of the fifth lens is too short, which will cause insufficient length of the bearing position, and further lead to the problem of unstable assembly. By restricting the relationship between the inner and outer diameters of the image-side end of the lens barrel and the diameter of the light-transmitting portion of the image-side surface of the fifth lens to satisfy 0.5 < (D0m - d0m) / DT52 < 1.5, the present application makes the ratio of the diameter of the non-light-transmitting portion to the diameter of the light-transmitting portion of the fifth lens tend to a reasonable range. On the one hand, it can avoid the problem of unstable assembly caused by the too short diameter of the non-light-transmitting portion of the fifth lens and the insufficient length of the bearing position. On the other hand, it can fully avoid the problem of surface shape change during molding and the difficulty in molding the tail end of the lens caused by the too long diameter of the non-light-transmitting portion of the fifth lens.

[0054] By controlling the conditions 2 < fno×tan(Semi-FOV) < 2.5 and 0.5 < (D0m - d0m) / DT52 < 1.5 within the said range, the optical imaging lens provided by the present 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 requirements of industrial applications.

[0055] The following combines FIG. 8A to FIG. 10B to further illustrate the effect of the technical solution of the present application on improving the overall assembly stability of the lens.

[0056] Fig. 8A Fig. shows a partial structural schematic diagram of the optical imaging lens according to the present application when fno×tan(Semi-FOV) = 2.14 and (D0m - d0m) / DT52 = 0.81. Figure 8B Fig. shows Fig. 8A a graph of the surface shape change of the image side of the fifth lens of the optical imaging lens.

[0057] Fig.9A Fig. shows a partial structural schematic diagram of the optical imaging lens according to the present application when fno×tan(Semi-FOV) = 3 and (D0m - d0m) / DT52 = 2. Fig. 9B Fig. shows Fig.9A a graph of the surface shape change of the image side of the fifth lens of the optical imaging lens.

[0058] Figure 8B In Fig. 9B and

[0059] Fig. 8A the horizontal axis and the vertical axis represent the position coordinate axes of the image side of the fifth lens. The origin (0, 0) represents the central position of the fifth lens. The blue curve represents the position coordinate of the image side of the fifth lens in the X-axis direction, and the red curve represents the position coordinate of the image side 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 position of the image side of the fifth lens (the edge position refers to the edge position of the light-transmitting part, excluding 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 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 difference in the surface shape of the image side of the fifth lens in the X-axis and Y-axis directions, and the worse the forming effect of the surface shape.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 ratio of the diameter of the light-transmitting portion of the fifth lens meet 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 a certain extent. That is, when 0.5<(D0m-d0m) / DT52<1.5 of the present application is met, the ratio of the diameter of the non-light-transmitting portion of the fifth lens to the diameter of the light-transmitting portion is reasonable. Therefore, Figure 8B In the surface shape change curve diagram of the image side surface of the fifth lens shown, the blue curve and the red curve tend to overlap, and the surface shape consistency of the image side surface of the fifth lens in the X-axis and Y-axis directions is good.

[0060] and Fig.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 will make the diameter of the non-light-transmitting portion of the fifth lens too long. Therefore, Fig. 9B In the surface shape change curve diagram of the image side surface of the fifth lens shown, the blue curve and the red curve tend to separate, especially the separation at both ends of the blue curve and the red curve representing the edge position is very serious, indicating that the surface shape of the image side surface of the fifth lens in the X-axis and Y-axis directions changes greatly, and the fifth lens is difficult to form.

[0061] It is understandable that after assembly, the lens will be deformed to a certain extent under the action of external forces. The degree of deformation is called strain. Strain is the ratio of the deformation variable to the original length dimension and is dimensionless. The magnitude of strain can reflect the concentration of stress. The smaller the strain range of a lens, the higher the stability of the lens. Fig. 10A and Fig. 10B FIG. 1 shows a schematic diagram of strain after the optical imaging lens is assembled, wherein the positive and negative values ​​of the strain represent the direction of change of the strain, or can also be understood as the direction of deformation, for example Fig. 10A and Fig. 10B In the above, the direction of strain or deformation can be defined as the positive direction (object side), and the direction of strain or deformation can be defined as the negative direction (image side).

[0062] More specifically, Fig. 10A The figure shows a schematic diagram of local strain of the optical imaging lens according to the present application when fno×tan(Semi-FOV)=2.16 and (D0m-d0m) / DT52=1.2, that is, the above two conditional expressions both meet the scope of the present application, 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 reasonable; Fig. 10BShows a schematic diagram of local strain of the optical imaging lens according to the present application when fno×tan(Semi - FOV) = 3 and (D0m - d0m) / DT52 = 0.1. That is, the above two conditional expressions do not satisfy the scope of the present application. (D0m - d0m) / DT52 = 0.1 indicates that the difference between the outer diameter and the inner diameter of the image - side end face of the lens barrel is too small, which will 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.

[0063] Fig. 10A The strain magnitude of the fifth lens in [is] between - 0.0004 and - 0.0008. Fig. 10B The strain magnitude of the fifth lens in [is] between - 0.0022 and - 0.0037. That is to say, Fig. 10A Satisfying the scope of the present application: 2 < fno×tan(Semi - FOV) < 2.5 and 0.5 < (D0m - d0m) / DT52 < 1.5, 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, and the strain range of the fifth lens is relatively small, which is beneficial to improving the surface shape stability and enhancing the overall assembly stability of the lens. While Fig. 10B the diameter of the non - light - transmitting part of the fifth lens in [is] too short, and the strain range of the fifth lens is relatively large, which will cause poor overall assembly stability.

[0064] 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 face of the lens barrel, d1s is the inner diameter of the object - side face of the first spacer, and f1 is the effective focal length of the first lens. Satisfying - 5 < (d0s - d1s) / f1 < - 2, by controlling the magnitude of the difference between the inner diameter of the object - side end face of the lens barrel and the inner diameter of the object - side face of the first spacer, the light flux of the lens can be controlled. At the same time, by controlling the effective focal length of the first lens, it is beneficial to the forming of the first lens.

[0065] 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 direction, and TD is the distance on the optical axis from the object - side face of the first lens to the image - side face of the fifth lens. Satisfying 2 < f / (L - TD) < 8, by controlling L and TD within a reasonable range, it is ensured that the optical imaging lens has the characteristic of miniaturization. At the same time, by controlling the effective focal length of the lens within a reasonable range, the main ray deflection angle can be controlled, which can limit the height of the lens barrel and ensure that the lens meets the wide - angle requirement while taking into account the characteristic of miniaturization.

[0066] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1.9 < d0s / d0m < 2.5, 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. By satisfying 1.9 < d0s / d0m < 2.5, by controlling the ratio of the inner diameter of the object-side end face of the lens barrel to the inner diameter of the image-side end face of the lens barrel, the magnitude of the outer diameter difference between the first lens and the fifth lens can be controlled, that is, the decreasing degree of the outer diameters of the first lens to the fifth lens can be controlled, enabling the inner and outer diameters of the lens barrel to change uniformly, and further controlling the uniformity of the lens barrel forming.

[0067] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 2 < d0s / DT11 + d0m / DT52 < 4, 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 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 face of the lens barrel determines, to a certain extent, the size of the non-light-transmitting portion of the first lens, and the inner diameter of the image-side end face of the lens barrel determines, to a certain extent, the size of the non-light-transmitting portion of the fifth lens. By satisfying 2 < d0s / DT11 + d0m / DT52 < 4, reasonably setting the ratio of the inner diameter of the object-side end face 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 face of the lens barrel to the diameter of the light-transmitting portion of the fifth lens is beneficial to controlling the sizes of the non-light-transmitting and light-transmitting portions of the first lens and the fifth lens within a reasonable range, reducing the forming difficulty of the lens, and reducing the overall forming risk of the lens group.

[0068] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.7 < (D0s - DT11) / (D0m - DT52) < 1.4, 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 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 face of the lens barrel and the diameter of the light-transmitting portion of the first lens determines, to a certain extent, the size of the non-light-transmitting portion of the first lens, and the difference between the outer diameter of the image-side end face of the lens barrel and the diameter of the light-transmitting portion of the fifth lens determines, to a certain extent, the size of the non-light-transmitting portion of the fifth lens. By satisfying 0.7 < (D0s - DT11) / (D0m - DT52) < 1.4, reasonably setting the outer diameters of the object-side and image-side end faces of the lens barrel, and the diameters of the light-transmitting portions of the first lens and the fifth lens is beneficial to controlling the lengths of the non-light-transmitting portions of the first lens and the fifth lens, making the sizes of the non-light-transmitting and light-transmitting portions of the first lens and the fifth lens within a reasonable range, reducing the forming difficulty of the lens, and reducing the overall forming risk of the lens group.

[0069] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0 < EP01 / (R1 + R2) < 1, where EP01 is the distance along the optical axis from the object-side end face 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 and controlling this formula within a reasonable range is beneficial to controlling the bending degrees on both sides of the first lens within a reasonable range, while controlling the sag of the first lens and reducing the risk of welding marks caused by excessive sag of the first lens, which is beneficial to the molding of the first lens.

[0070] In an exemplary embodiment, the optical imaging lens according to the present application may 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 and controlling this formula within a reasonable range keeps the sum of the thicknesses of the second spacer and the third spacer within a reasonable range, while keeping the spacing distances between the second lens and the third lens and between the third lens and the fourth lens on the optical axis within a reasonable range, enabling the second spacer and the third spacer to better play an integrating role between adjacent lenses and improving the lens stability.

[0071] In an exemplary embodiment, the optical imaging lens according to the present application may 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 from the intersection of the object-side surface of the second lens and the optical axis to the vertex of the effective radius of the object-side surface of the second lens, and SAG22 is the axial distance from the intersection of the image-side surface of the second lens and the optical axis to the vertex of the effective radius 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 and controls the curvature magnitudes on both sides of the second lens, which is beneficial to the molding of the second lens.

[0072] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0 < EP12 / f2 + EP23 / f3 < 0.7, where EP12 is the distance along the optical axis from the image side of the first spacer to the object side of the second spacer, EP23 is the distance along the optical axis from the image side of the second spacer to the object side 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 this formula within a reasonable range, EP12 and EP23 can be kept within a reasonable range, which is equivalent to controlling the edge thicknesses of the second lens and the third lens, and at the same time restricting the effective focal lengths of the second lens and the third lens, which is beneficial to controlling the propagation direction of light in the second lens and the third lens and reducing the generation of stray light.

[0073] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: -20 < EP23 / CT3 - CP3 / T34 < 1, where EP23 is the distance along the optical axis from the image side of the second spacer to the object side 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 of the third lens to the object side of the fourth lens. Satisfying -20 < EP23 / CT3 - CP3 / T34 < 1, by controlling this formula within a reasonable range, the magnitudes of the central thickness of the third lens and the thickness of the third spacer can be controlled. By controlling EP23, the edge thickness of the third lens can be controlled, and then by adjusting the size of the edge thickness of the third lens, the thickness of the third spacer can be indirectly adjusted to keep the thickness of the third spacer within a reasonable range, which is beneficial to the forming of the third spacer.

[0074] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: -0.5 < (EP34 + CP4) / f4 < 1, where EP34 is the distance along the optical axis from the image side of the third spacer to the object side 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 this 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 beneficial to the processing and forming of the fourth lens and the fourth spacer.

[0075] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 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 direction, and ∑AT is the sum of the air gaps on the optical axis between any two adjacent lenses among the first lens to the fifth lens. Satisfying 0 < ∑CP / ∑AT < 1 can control the spatial distribution of the spacers and the lenses, reasonably distribute the optical power of each lens, ensure the uniformity between the spacers and the overall structural strength, and improve the structural strength of the lens.

[0076] The optical imaging lens according to an exemplary embodiment of the present application includes: a lens barrel and a lens group and a spacer group disposed in the lens barrel, where the lens group sequentially includes, 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 spacer group may include at least one spacer disposed between two adjacent lenses; the optical imaging lens according to the present application may 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 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 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 face of the lens barrel, and D0m is the outer diameter of the image-side end face of the lens barrel. Reasonably setting the inner diameters, outer diameters of the object-side end face and the image-side end face of the lens barrel, and the diameters of the light-transmitting portions of the first lens and the fifth lens is beneficial to controlling 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, reducing the forming difficulty of the lens, and reducing the overall forming risk of the lens group.

[0077] In an embodiment of the present application, at least one of the lens surfaces of each lens is an aspherical lens surface, that is, at least one of the lens surfaces from the object-side surface of the first lens to the image-side surface of the fifth lens is an aspherical lens surface. The characteristics of an aspherical lens are that the curvature continuously changes from the center of the lens to the periphery of the lens. Different from a spherical lens with a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has better curvature radius characteristics and has the advantages of improving distortion aberration and astigmatism aberration. After using an aspherical lens, it is possible to eliminate the aberration that appears during imaging as much as possible, thereby improving the imaging quality. Optionally, the object-side surfaces and the image-side surfaces of all the lenses from the first lens to the fifth lens are aspherical lens surfaces.

[0078] In an exemplary embodiment, the above optical imaging lens may further include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging surface.

[0079] The optical imaging lens according to the above-mentioned embodiment of the present application may use multiple lenses, such as the five lenses mentioned above. By reasonably allocating the optical power, surface shape and arrangement of each spacer of each lens, the span of each gear of the lens and the lens barrel is made more uniform, which enhances the ability of light convergence and improves the imaging quality of the optical imaging lens. However, those skilled in the art should understand that the number of lenses constituting the optical imaging lens can be changed to obtain the various results and advantages described in this specification without departing from the technical solution claimed for protection in this application. For example, although five lenses are described as an example in the embodiment, the optical imaging lens is not limited to including five lenses. If necessary, the optical imaging lens may also include other numbers of lenses.

[0080] The following further describes specific embodiments of the optical imaging lens applicable to the above-mentioned embodiments with reference to the accompanying drawings. FIG. 2A to FIG. 3D Describe the optical imaging lens according to Embodiment 1 to Embodiment 3 of the present application; refer to 4A to 5D Describe the optical imaging lens according to Embodiment 4 to Embodiment 6 of the present application; refer to 6A to 7D Optical imaging lenses according to Embodiments 7 to 9 of the present application are described.

[0081] Example 1

[0082] Figure 2A FIG. 1 shows a schematic structural diagram of an optical imaging lens 1001 according to Embodiment 1 of the present application. Figure 2A As shown, the optical imaging lens 1001 includes a lens barrel P0, a lens group and a spacer group. The optical imaging lens 1001 also includes a stop STO (not shown) disposed between the second lens and the third lens.

[0083] like Figure 2A As shown, the lens group of the optical imaging lens 1001 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 color deviation, and the filter has an object-side surface S11 and an image-side surface S12. Light from the object passes through each surface S1 to S12 in sequence and is finally imaged on an imaging surface S13 (not shown).

[0084] Table 1 shows a basic parameter table of the lens group of the optical imaging lens 1001 of Example 1, wherein the units of the curvature radius, thickness / distance and effective focal length are all millimeters (mm).

[0085]

[0086]

[0087] Table 1

[0088] In Example 1, the object side surface and the image side surface of any lens among the first lens E1 to the fifth lens E5 are both aspherical surfaces, and the surface shape x of each aspherical lens can be defined by but not limited to the following aspherical surface formula:

[0089]

[0090] Wherein, x is the distance vector height from the vertex of the aspherical surface when the aspherical surface is at a height of h along the optical axis; c is the paraxial curvature of the aspherical surface, c=1 / R (i.e., the paraxial curvature c is the reciprocal of the curvature radius R in Table 1 above); k is the cone coefficient; Ai is the correction coefficient of the i-th order of the aspherical surface. Tables 2-1 and 2-2 give the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A 10 , A 12 , A 14 , A 16 , A 18 , A 20 , A 22 , A 24 , A 26 , A 28 and A 30 .

[0091] Face number 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

[0092] Table 2-1

[0093] Face number 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

[0094] Table 2-2

[0095] Table 3 shows the values ​​of the maximum half field of view angle Semi-FOV, entrance pupil diameter EPD and effective focal length f of the optical imaging lens 1001.

[0096] parameter Semi-FOV(°) EPD(mm) f(mm) Numeric 56.470 0.634 0.901

[0097] Table 3

[0098] like Figure 2AAs shown, the optical imaging lens 1001 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; 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 4 shows a basic parameter table of the spacers and lens barrel of the optical imaging lens 1001, and the units of each parameter in Table 4 are millimeters (mm). The above-mentioned spacers can block the excess light from the edge of the lens from entering, so that the lens and the lens barrel can be better supported, and the structural stability of the optical imaging lens 1001 is enhanced.

[0099] parameter d1s d0s d0m D0s D0m EP01 CP1 Numeric 1.722 5.424 2.703 5.924 4.343 1.081 0.018 parameter EP12 CP2 EP23 CP3 EP34 CP4 L Numeric 0.424 0.018 0.295 0.370 0.353 0.018 3.759

[0100] Table 4

[0101] Example 2

[0102] Figure 2B The structure diagram of the optical imaging lens 1002 according to Embodiment 2 of the present application is shown. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted.

[0103] like Figure 2B As shown, the optical imaging lens 1002 includes a lens barrel P0, a lens group, and a spacer group. The optical imaging lens 1002 also includes a stop STO (not shown) disposed between the second lens and the third lens. The lens group of the optical imaging lens 1002 is exactly the same as the lens group of the optical imaging lens 1001 of Example 1. The basic parameters thereof are detailed in Tables 1 to 3, and will not be described in detail.

[0104] like Figure 2B As shown, the optical imaging lens 1002 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; 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 5 shows a basic parameter table of the spacers and lens barrel of the optical imaging lens 1002, and the units of each parameter in Table 5 are millimeters (mm). The above-mentioned spacers can block the excess light from the edge of the lens from entering, so that the lens and the lens barrel can be better supported, and the structural stability of the optical imaging lens 1002 is enhanced.

[0105] parameter d1s d0s d0m D0s D0m EP01 CP1 Numeric 1.740 5.424 2.703 5.924 4.343 1.071 0.018 parameter EP12 CP2 EP23 CP3 EP34 CP4 L Numeric 0.424 0.018 0.535 0.018 0.471 0.018 3.759

[0106] Table 5

[0107] Example 3

[0108] Figure 2C A schematic structural diagram of an optical imaging lens 1003 according to Embodiment 3 of the present application is shown.

[0109] like Figure 2C As shown, the optical imaging lens 1003 includes a lens barrel P0, a lens group and a spacer group. The optical imaging lens 1003 also includes a stop STO (not shown) disposed between the second lens and the third lens. The lens group of the optical imaging lens 1003 is exactly the same as the lens group of the optical imaging lens 1001 of Example 1. The basic parameters thereof are detailed in Tables 1 to 3 and will not be described in detail.

[0110] like Figure 2C As shown, the optical imaging lens 1003 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; 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 6 shows a basic parameter table of the spacers and lens barrel of the optical imaging lens 1003, and the units of each parameter in Table 6 are millimeters (mm). The above-mentioned spacers can block the excess light from the edge of the lens from entering, so that the lens and the lens barrel can be better supported, and the structural stability of the optical imaging lens 1003 is enhanced.

[0111] parameter d1s d0s d0m D0s D0m EP01 CP1 Numeric 1.710 5.364 2.710 5.924 3.996 1.071 0.018 parameter EP12 CP2 EP23 CP3 EP34 CP4 L Numeric 0.424 0.018 0.010 0.655 0.353 0.018 3.759

[0112] Table 6

[0113] Figure 3A The axial chromatic aberration curves of the optical imaging lenses of Examples 1 to 3 are shown, which indicate the deviation of light rays of different wavelengths from the focal point behind the lens. Figure 3B Astigmatism curves of the optical imaging lenses of Examples 1 to 3 are shown, which represent meridional image curvature and sagittal image curvature. Figure 3C The distortion curves of the optical imaging lenses of Examples 1 to 3 are shown, which represent the distortion values ​​corresponding to different field angles. Figure 3D The magnification chromatic aberration curves of the optical imaging lenses of Examples 1 to 3 are shown, which represent the deviations of different image heights on the imaging surface after the light passes through the lens. FIG. 3A to FIG. 3D It can be seen that the optical imaging lenses provided in Examples 1 to 3 can achieve good imaging quality.

[0114] Example 4

[0115] Figure 4A FIG. 2 shows a schematic structural diagram of an optical imaging lens 2001 according to Embodiment 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 a stop STO (not shown) disposed between the second lens and the third lens.

[0116] 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 color deviation, and the filter has an object side surface S11 and an image side surface S12. Light from the object passes through each surface S1 to S12 in sequence and is finally imaged on an imaging surface S13 (not shown).

[0117] Table 7 shows the basic parameters of the lens group of the optical imaging lens 2001 of Example 4, wherein the units of the radius of curvature, thickness / distance and effective focal length are all in millimeters (mm). Tables 8-1 and 8-2 show the high-order coefficients of each aspherical mirror surface that can be used in Example 4, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above-mentioned Example 1.

[0118]

[0119]

[0120] Table 7

[0121] Face number A4 A6 A8 A10 A12 A14 A16 S1 -2.0393E-01 1.6257E-01 -5.0289E-02 -7.0000E-02 1.0098E-01 -3.0153E-02 -5.2847E-02 S2 -3.1665E-01 1.7000E+00 -2.2581E+01 1.9204E+02 -9.1628E+02 2.2783E+03 -7.7080E+02 S3 1.2427E-02 -1.0473E+00 5.5173E+00 4.2055E+01 -7.7006E+02 5.2354E+03 -2.1116E+04 S4 1.4070E+00 -8.6257E+01 3.3633E+03 -8.4184E+04 1.4370E+06 -1.7303E+07 1.4996E+08 S5 -1.2532E-01 1.1729E+01 -5.2314E+02 1.3143E+04 -1.9978E+05 1.8999E+06 -1.1091E+07 S6 -4.8584E+00 1.1817E+02 -1.8130E+03 1.9882E+04 -1.6095E+05 9.7476E+05 -4.4542E+06 S7 -6.2074E+00 1.3548E+02 -2.2269E+03 2.7942E+04 -2.6475E+05 1.8774E+06 -9.9263E+06 S8 -3.3278E+00 3.0555E+01 -2.4502E+02 1.6142E+03 -8.3616E+03 3.3154E+04 -9.9308E+04 S9 -1.4721E+00 5.6258E+00 -2.0334E+01 5.6083E+01 -1.1123E+02 1.5212E+02 -1.3468E+02 S10 5.4428E-02 -7.8418E-02 -9.2874E-01 7.9213E+00 -2.9729E+01 6.4834E+01 -8.6592E+01

[0122] Table 8-1

[0123] Face number 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

[0124] Table 8-2

[0125] 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.

[0126] parameter Semi-FOV(°) EPD(mm) f(mm) Numeric 56.580 0.598 0.856

[0127] Table 9

[0128] 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; 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 a basic parameter table of the spacers and lens barrel of the optical imaging lens 2001, and the units of each parameter in Table 10 are millimeters (mm). The above-mentioned spacers can block the entry of excess external light, so that the lens and the lens barrel can be better supported, and the structural stability of the optical imaging lens 2001 is enhanced.

[0129] parameter d1s d0s d0m D0s D0m EP01 CP1 Numeric 1.890 6.432 2.698 7.127 5.229 1.688 0.018 parameter EP12 CP2 EP23 CP3 EP34 CP4 L Numeric 0.623 0.018 0.433 0.018 0.586 0.018 4.176

[0130] Table 10

[0131] Example 5

[0132] Figure 4B A schematic structural diagram of an optical imaging lens 2002 according to Embodiment 5 of the present application is shown.

[0133] like Figure 4B As shown, the optical imaging lens 2002 includes a lens barrel P0, a lens group and a spacer group. The optical imaging lens 2002 also includes a stop STO (not shown) disposed between the second lens and the third lens. The lens group of the optical imaging lens 2002 is exactly the same as the lens group of the optical imaging lens 2001 of Example 1. The basic parameters thereof are detailed in Tables 7 to 9 and will not be described in detail.

[0134] like Figure 4BAs shown, the optical imaging lens 2002 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; 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 11 shows a basic parameter table of the spacers and lens barrel of the optical imaging lens 2002, and the units of each parameter in Table 11 are millimeters (mm). The above-mentioned spacers can block the excess light from the edge of the lens from entering, so that the lens and the lens barrel can be better supported, and the structural stability of the optical imaging lens 2002 is enhanced.

[0135] parameter d1s d0s d0m D0s D0m EP01 CP1 Numeric 1.850 6.432 2.698 7.127 4.674 1.688 0.018 parameter EP12 CP2 EP23 CP3 EP34 CP4 L Numeric 0.623 0.018 0.433 0.018 0.586 0.018 4.176

[0136] Table 11

[0137] Example 6

[0138] Figure 4C A schematic structural diagram of an optical imaging lens 2003 according to Embodiment 6 of the present application is shown.

[0139] like Figure 4C As shown, the optical imaging lens 2003 includes a lens barrel P0, a lens group and a spacer group. The optical imaging lens 2003 also 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 Example 1. The basic parameters thereof are detailed in Tables 7 to 9 and will not be described in detail.

[0140] like Figure 4C As shown, the optical imaging lens 2003 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; 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 12 shows a basic parameter table of the spacers and lens barrel of the optical imaging lens 2003, and the units of each parameter in Table 12 are all millimeters (mm). The above-mentioned spacers can block the excess light from the edge of the lens from entering, so that the lens and the lens barrel can be better supported, and the structural stability of the optical imaging lens 2003 is enhanced.

[0141] parameter d1s d0s d0m D0s D0m EP01 CP1 Numeric 1.866 6.232 2.698 6.927 4.674 1.688 0.018 parameter EP12 CP2 EP23 CP3 EP34 CP4 L Numeric 0.423 0.277 0.373 0.018 0.370 0.284 4.176

[0142] Table 12

[0143] Figure 5A The axial chromatic aberration curves of the optical imaging lenses of Examples 4 to 6 are shown, which indicate the deviation of light rays 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 image curvature and sagittal image 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. FIG. 5A to FIG. 5D It can be seen that the optical imaging lenses provided in Examples 4 to 6 can achieve good imaging quality.

[0144] Example 7

[0145] Fig. 6A FIG. 3 shows a schematic structural diagram of an optical imaging lens 3001 according to Embodiment 7 of the present application. Fig. 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 a stop STO (not shown) disposed between the second lens and the third lens.

[0146] like Fig. 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 color deviation, and the filter has an object side surface S11 and an image side surface S12. Light from the object passes through each surface S1 to S12 in sequence and is finally imaged on an imaging surface S13 (not shown).

[0147] Table 13 shows the basic parameter table of the lens group of the optical imaging lens 3001 of Example 7, wherein the units of the radius of curvature, thickness / distance and effective focal length are all in millimeters (mm). Tables 14-1 and 14-2 show the high-order coefficients of each aspherical mirror surface that can be used in Example 7, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0148]

[0149] Table 13

[0150] Face number 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

[0151] Table 14-1

[0152] Face number 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 -3.7426E+06 7.2301E+06 -9.6405E+06 8.4526E+06 -4.3875E+06 1.0218E+06 S4 -7.7431E+09 4.5141E+10 -1.8919E+11 5.5508E+11 -1.0819E+12 1.2579E+12 -6.6018E+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 -3.7058E+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

[0153] Table 14-2

[0154] Table 15 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 3001.

[0155] parameter Semi-FOV(°) EPD(mm) f(mm) Numeric 55.676 0.652 0.925

[0156] Table 15

[0157] like Fig. 6A As shown, the optical imaging lens 3001 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; 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 16 shows a basic parameter table of the spacers and lens barrel of the optical imaging lens 3001, and the units of each parameter in Table 16 are millimeters (mm). The above-mentioned spacers can block the entry of excess external light, so that the lens and the lens barrel can be better supported, and the structural stability of the optical imaging lens 3001 is enhanced.

[0158] parameter d1s d0s d0m D0s D0m EP01 CP1 Numeric 1.618 4.926 2.420 5.266 3.781 1.040 0.018 parameter EP12 CP2 EP23 CP3 EP34 CP4 L Numeric 0.452 0.018 0.345 0.334 0.354 0.018 3.508

[0159] Table 16

[0160] Example 8

[0161] Figure 6B A schematic structural diagram of an optical imaging lens 3002 according to Embodiment 8 of the present application is shown.

[0162] like Figure 6B As shown, the optical imaging lens 3002 includes a lens barrel P0, a lens group, and a spacer group. The optical imaging lens 3002 also includes an aperture STO (not shown) disposed between the second lens and the third lens. The lens group of the optical imaging lens 3002 is exactly the same as the lens group of the optical imaging lens 3001 of Example 1. The basic parameters thereof are detailed in Tables 13 to 15, and will not be described in detail.

[0163] 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; 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 a basic parameter table of the spacers and lens barrel of the optical imaging lens 3002, and the units of each parameter in Table 17 are millimeters (mm). The above-mentioned spacers can block the excess light from the edge of the lens from entering, so that the lens and the lens barrel can be better supported, and the structural stability of the optical imaging lens 3002 is enhanced.

[0164] parameter d1s d0s d0m D0s D0m EP01 CP1 Numeric 1.610 4.926 2.496 5.266 4.075 1.040 0.018 parameter EP12 CP2 EP23 CP3 EP34 CP4 L Numeric 0.452 0.018 0.345 0.334 0.359 0.018 3.573

[0165] Table 17

[0166] Example 9

[0167] Figure 6C A schematic structural diagram of an optical imaging lens 3003 according to Embodiment 9 of the present application is shown.

[0168] like Figure 6C As shown, the optical imaging lens 3003 includes a lens barrel P0, a lens group and a spacer group. The optical imaging lens 3003 also includes a stop STO (not shown) disposed between the second lens and the third lens. The lens group of the optical imaging lens 3003 is exactly the same as the lens group of the optical imaging lens 3001 of Example 1. The basic parameters thereof are detailed in Tables 13 to 15 and will not be described in detail.

[0169] like Figure 6CAs shown, the optical imaging lens 3003 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; 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 18 shows a basic parameter table of the spacers and lens barrel of the optical imaging lens 3003, and the units of each parameter in Table 18 are millimeters (mm). The above-mentioned spacers can block the excess light from the edge of the lens from entering, so that the lens and the lens barrel can be better supported, and the structural stability of the optical imaging lens 3003 is enhanced.

[0170] parameter d1s d0s d0m D0s D0m EP01 CP1 Numeric 1.620 5.084 2.423 5.444 4.052 1.040 0.018 parameter EP12 CP2 EP23 CP3 EP34 CP4 L Numeric 0.452 0.018 0.345 0.334 0.354 0.018 3.523

[0171] Table 18

[0172] Fig. 7A The axial chromatic aberration curves of the optical imaging lenses of Examples 7 to 9 are shown, which indicate the deviation of light rays of different wavelengths from the focal point behind the lens. Figure 7B Astigmatism curves of the optical imaging lenses of Examples 7 to 9 are shown, which represent meridional image curvature and sagittal image curvature. Figure 7C The distortion curves of the optical imaging lenses of Examples 7 to 9 are shown, which represent the distortion values ​​corresponding to different field angles. Fig.7D The magnification chromatic aberration curves of the optical imaging lenses of Examples 7 to 9 are shown, which represent the deviations of different image heights on the imaging surface after the light passes through the lens. FIG. 7A to FIG. 7D It can be seen that the optical imaging lenses provided in Examples 7 to 9 can achieve good imaging quality.

[0173] In summary, the optical imaging lenses of Examples 1 to 9 satisfy the relationship shown in Table 19.

[0174] Conditional / Example 1 2 3 4 5 6 7 8 9 fno×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 <h2 style=";text-align:left;direction:ltr">d0s / DT11+d0m / DT52 2.8858 2.8858 2.8722 3.0024 3.0024 2.9484 2.6541 2.6918 2.7022 <h2 style=";text-align:left;direction:ltr"> (D0s-DT11) / (D0m-DT52) 1.0345 1.0345 1.2156 1.1065 1.3482 1.2694 1.0629 0.9111 1.0088 <h2 style=";text-align:left;direction:ltr"> EP01 / (R1+R2) 0.1549 0.1535 0.1535 0.8226 0.8226 0.8226 0.1490 0.1490 0.1491 <h2 style=";text-align:left;direction:ltr"> (CP2+CP3) / (T23+T34) 0.9694 0.0899 1.6819 0.0734 0.0734 0.6022 0.8797 0.8797 0.8797 <h2 style=";text-align:left;direction:ltr"> EP12 / (SAG21+SAG22) 0.9607 0.9607 0.9607 0.9801 0.9801 0.6655 1.0248 1.0248 1.0248 <h2 style=";text-align:left;direction:ltr"> EP12 / f2+EP23 / f3 0.1362 0.1815 0.0823 0.5220 0.5220 0.4092 0.1510 0.1510 0.1510 <h2 style=";text-align:left;direction:ltr"> EP23 / CT3-CP3 / T34 -9.5241 0.6614 -17.9737 0.1177 0.1177 0.0193 -8.4304 -8.4304 -8.4304 <h2 style=";text-align:left;direction:ltr"> (EP34+CP4) / f4 0.4290 0.5648 0.4290 -0.2424 -0.2424 -0.2625 0.4238 0.4295 0.4238 <h2 style=";text-align:left;direction:ltr"> ∑CP / ∑AT 0.5673 0.0963 0.9489 0.0602 0.0602 0.4996 0.5193 0.5193 0.5193

[0175] Table 19

[0176] The present application also provides an imaging device, whose electronic photosensitive element can be a photosensitive coupled device (CCD) or a complementary metal oxide semiconductor element (CMOS). The imaging device can be an independent imaging device such as a digital camera, or an imaging module integrated in a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens described above.

[0177] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. An optical imaging lens, characterized in that: Comprising: A lens barrel, a lens group and a spacer 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 focal power; A second lens with a positive focal power; A third lens with a positive focal power; A fourth lens with a focal power; and A fifth lens with a focal power; The spacer group includes at least one spacer disposed between two adjacent lenses; and 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) < 2.5; and The outer diameter D0m of the image-side end face of the lens barrel, the inner diameter d0m of the image-side end face of the lens barrel and the diameter DT52 of the light-transmitting portion of the image side face of the fifth lens satisfy: 0.5 < (D0m - d0m) / DT52 < 1.

5.

2. The optical imaging lens according to claim 1, wherein: The spacer group includes a first spacer disposed between the first lens and the second lens and at least partially contacting the image side face of the first lens; The optical imaging lens satisfies: -5 < (d0s - d1s) / f1 < -2, 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 face of the first spacer, 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 < 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 direction, and TD is the distance on the optical axis from the object side face of the first lens to the image side face of the fifth lens.

4. The optical imaging lens according to claim 1, wherein: The optical imaging lens satisfies: 1.9 < d0s / d0m < 2.5, 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 < d0s / DT11 + d0m / DT52 < 4, 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 portion of the object side face of the first lens, and DT52 is the diameter of the light-transmitting portion of the image side face of the fifth lens.

6. The optical imaging lens according to claim 1, wherein: The optical imaging lens satisfies: 0.7 < (D0s - DT11) / (D0m - DT52) < 1.4, 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 portion of the object side face of the first lens, and DT52 is the diameter of the light-transmitting portion of the image side face of the fifth lens.

7. The optical imaging lens according to any one of claims 1, 3 to 6, characterized in that: The spacer group includes a first spacer disposed between the first lens and the second lens and at least partially contacting the image side face of the first lens; The optical imaging lens satisfies: 0 < EP01 / (R1 + R2) < 1, where EP01 is the distance along the optical axis from the object-side end face of the lens barrel to the object side face of the first spacer, 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, characterized in that: The spacer group includes: A second spacer, disposed between the second lens and the third lens and at least partially contacting 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 contacting the object side surface of the fourth lens; The optical imaging lens satisfies: 0 < (CP2 + CP3) / (T23 + T34) < 2, where CP2 is the thickness of the second spacer along the optical axis direction, CP3 is the thickness of the third spacer along the optical axis direction, 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.

9. The optical imaging lens according to any one of claims 1, 3 to 6, characterized in that: The spacer group includes: A first spacer, disposed between the first lens and the second lens and at least partially contacting 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 contacting the image side surface of the second lens; and The optical imaging lens satisfies: 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 point 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 axial distance between the intersection point 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, characterized in that: The spacer group further includes: A first spacer, disposed between the first lens and the second lens and at least partially contacting the image side surface of the first lens; A second spacer, disposed between the second lens and the third lens and at least partially contacting 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 contacting the object side surface of the fourth lens; The optical imaging lens satisfies: 0 < EP12 / f2 + EP23 / f3 < 0.7, 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, 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, f2 is the effective focal length of the second lens, and f3 is the effective focal length of the third lens.

11. The optical imaging lens according to any one of claims 1, 3 to 6, characterized in that: The spacer group includes: A second spacer, disposed between the second lens and the third lens and at least partially contacting 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 contacting 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 of the second spacer to the object side 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 of the third lens to the object side of the fourth lens.

12. The optical imaging lens according to any one of claims 1 to 6, characterized in that: The spacer group includes: A third spacer, disposed between the third lens and the fourth lens and at least partially in contact with the object side 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 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 of the third spacer to the object side 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.

13. The optical imaging lens according to any one of claims 1, 3 to 6, characterized in that: The spacer group includes: A first spacer, disposed between the first lens and the second lens and at least partially in contact with the image side 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 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 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 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 gaps on the optical axis between any two adjacent lenses among the first lens to the fifth lens.

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