An optical imaging lens

Abstract

The present application discloses an optical imaging lens, which includes, in order from the object side to the image side along the optical axis: a first lens; a second lens; a third lens with negative optical power, whose object side surface is concave and whose image side surface is convex; a fourth lens with positive optical power, whose object side surface is concave; a fifth lens, whose object side surface is concave; the on-axis distance TTL from the object side surface of the first lens to the imaging surface and the effective focal length f of the optical imaging system satisfy TTL / f≦1.0. Through the optical imaging lens provided by the present application, on the basis of reducing the lens, the lens TTL and F focal length ratio are controlled. On the one hand, the total length of the lens is not too long, and the camera module is made thinner and lighter; on the other hand, the focal length is as long as possible to meet the telephoto lens magnification ratio and achieve the telephoto magnification effect of shooting. At the same time, by reasonably allocating the optical power of the front and rear lens groups, the imaging lens can have good imaging quality and effectively reduce the sensitivity of the optical imaging lens.

Description

Technical Field

[0001] The present application belongs to the field of optical imaging systems, and in particular to an optical imaging lens composed of five lenses. Background Art

[0002] With the continuous improvement of the requirements for camera quality, a single camera module can no longer meet user needs. Currently, devices such as smartphones are equipped with multiple lens modules to meet different usage environments. The telephoto camera module can achieve clear shooting at a long distance with its natural advantages, and the image can be magnified by one time while still keeping the image clear. With the improvement of lens manufacturing level, the shortest focal length of the current wide-angle lens has reached 4 mm, which can capture the full view of a person with a height of 1.8 meters at a distance of 1 meter from the camera; and the longest focal length of the telephoto lens can reach more than 1100 mm, which can capture the full view of a person with a height of 1.8 meters at a distance of 300 meters from the camera, which is amazing.

[0003] With the continuous development of mobile phone lenses, large image plane, telephoto and wide angle have become the standard configuration of major manufacturers, and the actual scene use of telephoto lenses has also received more and more attention. Due to the characteristics of telephoto lenses, the telephoto lenses on the market currently have problems such as using too many lenses, large lens diameter and volume, and the blur effect is relatively general during portrait shooting. Most of them are algorithm blur, and the effect is not as natural as the lens.

[0004] Therefore, in order to solve the above problems, the present application proposes a large-aperture telephoto lens, which ensures that the lens is miniaturized. In the actual shooting process, not only can the clear imaging capability of distant objects be maintained, but also the blur effect of the lens can be significantly improved.

[0005] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Summary of the invention

[0006] This application aims to provide an optical imaging lens that can maintain clear imaging of distant objects and significantly improve the blur effect of the lens in the actual shooting process while ensuring that the lens is miniaturized. In addition, it ensures that enough imaging light can enter the optical system during night shooting, reduces the noise of the imaging picture, and obtains better imaging effects.

[0007] The present application provides an optical imaging lens, which includes, in order from the object side to the image side along the optical axis:

[0008] First lens;

[0009] Second lens;

[0010] The third lens has a negative optical power, and its object side surface is concave and its image side surface is convex;

[0011] a fourth lens element having positive refractive power and a concave object side surface;

[0012] A fifth lens having a concave object side surface;

[0013] The on-axis distance TTL from the object side of the first lens to the imaging surface and the effective focal length f of the optical imaging system satisfy TTL / f≦1.0.

[0014] According to one embodiment of the present application, an air interval T23 between the second lens and the third lens on the optical axis, an air interval T12 between the first lens and the second lens on the optical axis, and a center thickness CT2 of the second lens on the optical axis satisfy: 0.5≦T23 / (T12+CT2)≦2.0.

[0015] According to one embodiment of the present application, the air interval T34 between the third lens and the fourth lens on the optical axis, the center thickness CT2 of the second lens on the optical axis, and the center thickness CT3 of the third lens on the optical axis satisfy: 1.5≦T34 / (CT2+CT3)≦2.5.

[0016] According to one embodiment of the present application, the effective focal length f4 of the fourth lens, the effective focal length f5 of the fifth lens, the curvature radius R8 of the image side surface of the fourth lens, and the curvature radius R9 of the object side surface of the fifth lens satisfy: 3.0≦ |f4 / R8|+|f5 / R9|≦4.5.

[0017] According to one embodiment of the present application, a curvature radius R7 of the object side surface of the fourth lens and a curvature radius R8 of the image side surface of the fourth lens satisfy: 1.5≦(R7+R8) / (R7-R8)≦2.3.

[0018] According to one embodiment of the present application, the effective focal length f of the optical imaging lens and the effective focal length f4 of the fourth lens satisfy: 3.0≦f / f4≦3.6.

[0019] According to one embodiment of the present application, the effective focal length f1 of the first lens and the curvature radius R1 of the object side surface of the first lens satisfy: 0.5≦f1 / R1≦1.0.

[0020] According to one embodiment of the present application, the on-axis distance TTL from the object side surface of the first lens to the imaging surface and the sum of the center thicknesses of all lenses on the optical axis ΣCT satisfy: 2.0≦TTL / ΣCT≦2.5.

[0021] According to one embodiment of the present application, the combined focal length f123 of the first lens, the second lens and the third lens and the combined focal length f345 of the third lens, the fourth lens and the fifth lens satisfy: 0.5≦|f345 / f123|≦6.0.

[0022] According to one embodiment of the present application, the combined focal length f12 of the first lens and the second lens and the combined focal length f234 of the second lens, the third lens and the fourth lens satisfy: 2.0≦|f12 / f234|≦3.0.

[0023] According to one embodiment of the present application, the on-axis distance SAG41 between the intersection of the object side surface of the fourth lens and the optical axis to the effective radius vertex of the object side surface of the fourth lens and the on-axis distance SAG42 between the intersection of the image side surface of the fourth lens and the optical axis to the effective radius vertex of the image side surface of the fourth lens satisfy: 2.0≦(SAG42+SAG41) / (SAG42-SAG41)≦3.5.

[0024] According to one embodiment of the present application, the distance SD from the aperture to the image side surface of the last lens and the axial distance SL from the aperture to the imaging surface satisfy: 1.2≦SL / SD≦1.5.

[0025] The present application also provides an optical imaging lens, which includes, in order from the object side to the image side along the optical axis:

[0026] First lens;

[0027] Second lens;

[0028] The third lens has a negative optical power, and its object side surface is concave and its image side surface is convex;

[0029] a fourth lens element having positive refractive power and a concave object side surface;

[0030] A fifth lens having a concave object side surface;

[0031] Among them, the on-axis distance TTL from the object side surface of the first lens to the imaging surface, the air interval T34 between the third lens and the fourth lens on the optical axis, and the center thickness CT4 of the fourth lens on the optical axis satisfy: 2.5≦TTL / (T34+CT4)≦3.3.

[0032] According to one embodiment of the present application, an air interval T23 between the second lens and the third lens on the optical axis, an air interval T12 between the first lens and the second lens on the optical axis, and a center thickness CT2 of the second lens on the optical axis satisfy: 0.5≦T23 / (T12+CT2)≦2.0.

[0033] According to one embodiment of the present application, the air interval T34 between the third lens and the fourth lens on the optical axis, the center thickness CT2 of the second lens on the optical axis, and the center thickness CT3 of the third lens on the optical axis satisfy: 1.5≦T34 / (CT2+CT3)≦2.5.

[0034] According to one embodiment of the present application, the effective focal length f4 of the fourth lens, the effective focal length f5 of the fifth lens, the curvature radius R8 of the image side surface of the fourth lens, and the curvature radius R9 of the object side surface of the fifth lens satisfy: 3.0≦ |f4 / R8|+|f5 / R9|≦4.5.

[0035] According to one embodiment of the present application, a curvature radius R7 of the object side surface of the fourth lens and a curvature radius R8 of the image side surface of the fourth lens satisfy: 1.5≦(R7+R8) / (R7-R8)≦2.3.

[0036] According to one embodiment of the present application, the effective focal length f of the optical imaging lens and the effective focal length f4 of the fourth lens satisfy: 3.0≦f / f4≦3.6.

[0037] According to one embodiment of the present application, the effective focal length f1 of the first lens and the curvature radius R1 of the object side surface of the first lens satisfy: 0.5≦f1 / R1≦1.0.

[0038] According to one embodiment of the present application, the on-axis distance TTL from the object side surface of the first lens to the imaging surface and the sum of the center thicknesses of all lenses on the optical axis ΣCT satisfy: 2.0≦TTL / ΣCT≦2.5.

[0039] According to one embodiment of the present application, the combined focal length f123 of the first lens, the second lens and the third lens and the combined focal length f345 of the third lens, the fourth lens and the fifth lens satisfy: 0.5≦|f345 / f123|≦6.0.

[0040] According to one embodiment of the present application, the combined focal length f12 of the first lens and the second lens and the combined focal length f234 of the second lens, the third lens and the fourth lens satisfy: 2.0≦|f12 / f234|≦3.0.

[0041] According to one embodiment of the present application, the on-axis distance SAG41 between the intersection of the object side surface of the fourth lens and the optical axis to the effective radius vertex of the object side surface of the fourth lens and the on-axis distance SAG42 between the intersection of the image side surface of the fourth lens and the optical axis to the effective radius vertex of the image side surface of the fourth lens satisfy: 2.0≦(SAG42+SAG41) / (SAG42-SAG41)≦3.5.

[0042] According to one embodiment of the present application, the distance SD from the aperture to the image side of the last lens and the axial distance SL from the aperture to the imaging surface satisfy: 1.2≦SL / SD≦1.5. Beneficial effects of the present application: The optical imaging lens provided by the present application includes multiple lenses, such as the first lens to the fifth lens. On the basis of reducing the number of lenses, the lens TTL and f focal length ratio are controlled. On the one hand, the total length of the lens is not too long, the camera module is made thin and light, and the appearance and feel of the mobile phone are guaranteed; on the other hand, the focal length is as long as possible to meet the telephoto lens magnification ratio and achieve the telephoto magnification effect of shooting. At the same time, by reasonably allocating the optical focal length of the front and rear lens groups, the imaging lens can have good imaging quality and effectively reduce the sensitivity of the optical imaging lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0044] Figure 1 This is a schematic diagram of the lens group structure of Embodiment 1 of the optical imaging lens of the present application;

[0045] Figure 2a to Figure 2c They are respectively the axial chromatic aberration curve, the astigmatism curve and the magnification chromatic aberration curve of the optical imaging lens embodiment 1 of the present application;

[0046] Figure 3 This is a schematic diagram of the lens group structure of Embodiment 2 of the optical imaging lens of the present application;

[0047] Figures 4a to 4c They are respectively the axial chromatic aberration curve, the astigmatism curve and the magnification chromatic aberration curve of the optical imaging lens embodiment 2 of the present application;

[0048] Figure 5 This is a schematic diagram of the lens group structure of Embodiment 3 of the optical imaging lens of the present application;

[0049] Figures 6a to 6c They are respectively the axial chromatic aberration curve, the astigmatism curve and the magnification chromatic aberration curve of the optical imaging lens embodiment 3 of the present application;

[0050] Figure 7 This is a schematic diagram of the lens group structure of Embodiment 4 of the optical imaging lens of the present application;

[0051] Figures 8a to 8c They are respectively the axial chromatic aberration curve, the astigmatism curve and the magnification chromatic aberration curve of the optical imaging lens embodiment 4 of the present application. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] In the description of this application, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least in the paraxial region. If the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object is called the object side of the lens, and the surface of each lens closest to the imaging surface is called the image side of the lens.

[0057] Unless otherwise defined, all terms (including technical terms and scientific terms) used in this article have the same meaning as commonly understood by ordinary technicians in the field to which this application belongs. It should also be understood that terms (such as terms defined in commonly used dictionaries) should be interpreted as having the same meaning as their meaning in the context of the relevant technology, and will not be interpreted in an idealized or overly formal way unless explicitly defined in this article.

[0058] 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 features, principles and other aspects of the present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0059] Exemplary Embodiments

[0060] The exemplary optical imaging lens of the present application includes five lenses, which include: a first lens, a second lens, a third lens, a fourth lens and a fifth lens in order from the object side to the image side along the optical axis. In fact, each lens is independent of each other, and there is an air gap between each lens on the optical axis.

[0061] In this exemplary embodiment, a first lens has optical power; a second lens has optical power; a third lens has optical power, the object side surface of which is concave and the image side surface is convex; a fourth lens has optical power, the object side surface of which is concave; and a fifth lens has optical power, the object side surface of which is concave.

[0062] Among them, the on-axis distance TTL from the object side of the first lens to the imaging surface and the effective focal length f of the optical imaging system satisfy TTL / f≦1.0. By controlling the lens TTL and F focal length ratio, on the one hand, the total length of the lens will not be too long, the thinness of the camera module, and the appearance and feel of the mobile phone are guaranteed; on the other hand, the focal length is as long as possible to meet the telephoto lens magnification ratio and achieve the telephoto magnification effect of shooting. More specifically, the on-axis distance TTL from the object side of the first lens to the imaging surface and the effective focal length f of the optical imaging system satisfy: 0.97≤TTL / f≤1.00.

[0063] Among them, the on-axis distance TTL from the object side of the first lens to the imaging surface, the air interval T34 between the third lens and the fourth lens on the optical axis, and the center thickness CT4 of the fourth lens on the optical axis satisfy: 2.5≦TTL / (T34+CT4)≦3.3. By controlling the sum of the on-axis distances from the image side of the third lens to the image side of the fourth lens in the optical imaging system, the distortion range of the system can be reasonably controlled, so that the system has smaller distortion and improves the imaging quality. More specifically, the on-axis distance TTL from the object side of the first lens to the imaging surface, the air interval T34 between the third lens and the fourth lens on the optical axis, and the center thickness CT4 of the fourth lens on the optical axis satisfy: 2.51≦TTL / (T34+CT4)≦3.29.

[0064] In an exemplary embodiment of the present application, the air interval T23 between the second lens and the third lens on the optical axis, the air interval T12 between the first lens and the second lens on the optical axis, and the center thickness CT2 of the second lens on the optical axis satisfy: 0.5≦T23 / (T12+CT2)≦2.0. By constraining the air interval between the second lens and the third lens on the optical axis and the ratio of the first lens gap to the second lens thickness within a certain range, the performance of the system field curvature can be reasonably controlled, so that the aberration of the system in the off-axis field of view is small. More specifically, the air interval T23 between the second lens and the third lens on the optical axis, the air interval T12 between the first lens and the second lens on the optical axis, and the center thickness CT2 of the second lens on the optical axis satisfy: 0.51≦T23 / (T12+CT2)≦1.99.

[0065] In an exemplary embodiment of the present application, the air gap T34 between the third lens and the fourth lens on the optical axis, the center thickness CT2 of the second lens on the optical axis, and the center thickness CT3 of the third lens on the optical axis satisfy: 1.5≦T34 / (CT2+CT3)≦2.5. By reasonably adjusting the air gap between the third lens and the fourth lens and the thickness of the second and third lenses, the risk of ghost images of the third and fourth lenses can be effectively reduced, and it will help to compress the size of the camera lens group. More specifically, the air gap T34 between the third lens and the fourth lens on the optical axis, the center thickness CT2 of the second lens on the optical axis, and the center thickness CT3 of the third lens on the optical axis satisfy: 1.51≦T34 / (CT2+CT3)≦2.49.

[0066] In an exemplary embodiment of the present application, the effective focal length f4 of the fourth lens, the effective focal length f5 of the fifth lens, the curvature radius R8 of the image side of the fourth lens, and the curvature radius R9 of the object side of the fifth lens satisfy: 3.0≦ |f4 / R8|+|f5 / R9|≦4.5. By constraining the sum of the ratios of the focal lengths and curvatures of the fourth and fifth lenses, the exit angle of the incident light is reduced, the incident angle of the principal light of the lens on the chip is reduced, and the risk of color cast is reduced. More specifically, the effective focal length f4 of the fourth lens, the effective focal length f5 of the fifth lens, the curvature radius R8 of the image side of the fourth lens, and the curvature radius R9 of the object side of the fifth lens satisfy: 3.01≦|f4 / R8|+|f5 / R9|≦4.49.

[0067] In an exemplary embodiment of the present application, the radius of curvature R7 of the object side of the fourth lens and the radius of curvature R8 of the image side of the fourth lens satisfy: 1.5≦(R7+R8) / (R7-R8)≦2.3. By constraining the ratio of the difference and the sum of the radii of curvature of the object side and the image side of the third lens to be within a certain range, the coma of the on-axis field of view and the off-axis field of view is small, so that the imaging system has good imaging quality. More specifically, the radius of curvature R7 of the object side of the fourth lens and the radius of curvature R8 of the image side of the fourth lens satisfy: 1.51≦(R7+R8) / (R7-R8)≦2.28.

[0068] In an exemplary embodiment of the present application, the effective focal length f of the optical imaging lens and the effective focal length f4 of the fourth lens satisfy: 3.0≦f / f4≦3.6. By reasonably controlling the range of the effective focal length of the fourth lens, the contribution rate of the optical power of the fourth lens can be reasonably controlled, and the high-order spherical aberration generated by the imaging system can be balanced. More specifically, the effective focal length f of the optical imaging lens and the effective focal length f4 of the fourth lens satisfy: 3.01≦f / f4≦3.59.

[0069] In an exemplary embodiment of the present application, the effective focal length f1 of the first lens and the curvature radius R1 of the object side of the first lens satisfy: 0.5≦f1 / R1≦1.0. By constraining the focal length and the curvature of the object side of the first lens, the incident angle is small, which meets the characteristics of the telephoto system. More specifically, the effective focal length f1 of the first lens and the curvature radius R1 of the object side of the first lens satisfy: 0.51≦f1 / R1≦1.0.

[0070] In an exemplary embodiment of the present application, the on-axis distance TTL from the object side of the first lens to the imaging plane and the sum of the center thicknesses of all lenses on the optical axis ∑CT satisfy: 2.0≦TTL / ΣCT≦2.5. By controlling the sum of the thicknesses of all lenses in the optical imaging system, the distortion range of the system can be reasonably controlled so that the system has smaller distortion. More specifically, the on-axis distance TTL from the object side of the first lens to the imaging plane and the sum of the center thicknesses of all lenses on the optical axis ∑CT satisfy: 2.01≦TTL / ΣCT≦2.49.

[0071] In an exemplary embodiment of the present application, the combined focal length f123 of the first lens, the second lens and the third lens and the combined focal length f345 of the third lens, the fourth lens and the fifth lens satisfy: 0.5≦|f345 / f123|≦6.0. By reasonably allocating the focal power of the front and rear lens groups, the system can have good imaging quality and effectively reduce the sensitivity of the system. More specifically, the combined focal length f123 of the first lens, the second lens and the third lens and the combined focal length f345 of the third lens, the fourth lens and the fifth lens satisfy: 0.51≦|f345 / f123|≦5.99.

[0072] In an exemplary embodiment of the present application, the combined focal length f12 of the first lens and the second lens and the combined focal length f234 of the second lens, the third lens and the fourth lens satisfy: 2.0≦|f12 / f234|≦3.0. By constraining the ratio of the combined focal length of the first and second lenses to the combined focal length of the first three lenses, the light incident on the first and second lenses can be reasonably reduced, and the sensitivity of the front lens group can be reduced. More specifically, the combined focal length f12 of the first lens and the second lens and the combined focal length f234 of the second lens, the third lens and the fourth lens satisfy: 2.01≦|f12 / f234|≦2.99.

[0073] In an exemplary embodiment of the present application, the on-axis distance SAG41 between the intersection of the fourth lens object side and the optical axis to the effective radius vertex of the fourth lens object side and the on-axis distance SAG42 between the intersection of the fourth lens image side and the optical axis to the effective radius vertex of the fourth lens image side meet the following conditions: 2.0≦(SAG42+SAG41) / (SAG42-SAG41)≦3.5. By constraining the relationship between the sag heights of the two surfaces of the fourth lens, the lens aperture is reduced and the stability of the assembly is improved. More specifically, the on-axis distance SAG41 between the intersection of the fourth lens object side and the optical axis to the effective radius vertex of the fourth lens object side and the on-axis distance SAG42 between the intersection of the fourth lens image side and the optical axis to the effective radius vertex of the fourth lens image side meet the following conditions: 2.01≦(SAG42+SAG41) / (SAG42-SAG41)≦3.49.

[0074] In an exemplary embodiment of the present application, the distance SD from the aperture to the image side of the last lens and the axial distance SL from the aperture to the imaging surface satisfy: 1.2≦SL / SD≦1.5. By properly setting the position of the aperture, the coma, astigmatism, distortion and axial chromatic aberration related to the aperture can be effectively corrected. More specifically, the distance SD from the aperture to the image side of the last lens and the axial distance SL from the aperture to the imaging surface satisfy: 1.21≦SL / SD≦1.49.

[0075] In this exemplary embodiment, the object side surface and the image side surface of any lens of 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:

[0076]

[0077] Wherein, x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at a height of h along the optical axis; c is the paraxial curvature of the aspheric surface, c=1 / R (i.e., the paraxial curvature c is the reciprocal of the curvature radius R in Table 1); k is the cone coefficient; Ai is the correction coefficient of the i-th order aspheric surface.

[0078] In this exemplary embodiment, the optical imaging lens may further include a stop. The stop may be disposed at an appropriate position as required, for example, the stop may be disposed between the object side and the first lens. Optionally, the optical imaging lens may further include a filter for correcting color deviation and / or a protective glass for protecting a photosensitive element located on the imaging surface.

[0079] The optical imaging lens according to the above embodiment of the present application can use multiple lenses, such as the above five lenses. By reasonably allocating the focal length, surface shape, center thickness of each lens, and axial spacing between lenses, the optical imaging lens has a smaller size and volume, has the characteristics of a wide imaging range and high imaging quality, and ensures the ultra-thinness of the mobile phone.

[0080] In an exemplary embodiment, at least one of the mirror surfaces of each lens is an aspherical mirror surface, that is, at least one of the mirror surfaces from the object side of the first lens to the image side of the fifth lens is an aspherical mirror surface. The characteristics of an aspherical lens are: the curvature changes continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens with a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has a better curvature radius characteristic, and has the advantages of improving distortion aberration and improving astigmatism aberration. After adopting an aspherical lens, the aberration that occurs during imaging can be eliminated as much as possible, thereby improving the imaging quality. Optionally, at least one of the object side and image side of each lens in the first lens, the second lens, the third lens, the fourth lens and the fifth lens is an aspherical mirror surface. Optionally, the object side and image side of each lens in the first lens, the second lens, the third lens, the fourth lens and the fifth lens are all aspherical mirror surfaces.

[0081] However, those skilled in the art should understand that, without departing from the technical solution claimed in the present application, the number of lenses constituting the optical imaging lens can be changed to obtain the various results and advantages described in this specification. For example, although five lenses are described as an example in the embodiments, the optical imaging lens is not limited to including five lenses, and the optical imaging lens may also include other numbers of lenses if necessary.

[0082] Specific embodiments of the optical imaging lens applicable to the above embodiments are further described below with reference to the accompanying drawings. Specific embodiment 1

[0084] Figure 1 Schematic diagram of the lens group structure of the optical imaging lens embodiment 1 of the present application. The optical imaging lens includes, in order from the object side to the image side along the optical axis: a first lens E1, an aperture STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6 and an imaging surface S13.

[0085] The first lens E1 has positive focal power, its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has negative focal power, its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has negative focal power, its object side surface S5 is concave, and its image side surface S6 is convex. The fourth lens E4 has positive focal power, its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has negative focal power, its object side surface S9 is concave, and its image side surface S10 is convex. The filter E6 has an object side surface S11 and an image side surface S12. The light from the object passes through each surface of surfaces S1 to S12 in sequence and is finally imaged on the imaging surface S13.

[0086] As shown in Table 1, it is a basic parameter table of the optical imaging lens of Example 1, wherein the units of the radius of curvature, thickness, and focal length are all millimeters (mm).

[0087]

[0088] Table 1

[0089] As shown in Table 2, in Example 1, the total effective focal length of the optical imaging lens is f=4.74 mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S13 of the optical imaging lens is 4.71 mm, and half of the diagonal length of the effective pixel area on the imaging surface S13 is ImgH=2.19 mm.

[0090]

[0091] Table 2

[0092] The optical imaging lens in Example 1 satisfies:

[0093] TTL / f=0.99, where TTL is the axial distance from the object side of the first lens to the imaging surface, and f is the effective focal length of the optical imaging system.

[0094] TTL / (T34+CT4)=2.98, wherein TTL is the on-axis distance from the object side of the first lens to the imaging surface, T34 is the air interval between the third lens and the fourth lens on the optical axis, and CT4 is the center thickness of the fourth lens on the optical axis.

[0095] T23 / (T12+CT2)=1.23, wherein T23 is the air interval between the second lens and the third lens on the optical axis, T12 is the air interval between the first lens and the second lens on the optical axis, and CT2 is the center thickness of the second lens on the optical axis.

[0096] T34 / (CT2+CT3)=2.16, wherein T34 is the air interval between the third lens and the fourth lens on the optical axis, CT2 is the center thickness of the second lens on the optical axis, and CT3 is the center thickness of the third lens on the optical axis.

[0097] |f4 / R8|+|f5 / R9|=3.98, wherein f4 is the effective focal length of the fourth lens, f5 is the effective focal length of the fifth lens, R8 is the curvature radius of the image side surface of the fourth lens, and R9 is the curvature radius of the object side surface of the fifth lens.

[0098] (R7+R8) / (R7-R8)=2.11, wherein R7 is the radius of curvature of the object side surface of the fourth lens, and R8 is the radius of curvature of the image side surface of the fourth lens.

[0099] f / f4=3.17, wherein f is the effective focal length of the optical imaging system, and f4 is the effective focal length of the fourth lens.

[0100] f1 / R1=1.95, wherein f1 is the effective focal length of the first lens, and R1 is the radius of curvature of the object side of the first lens.

[0101] TTL / ΣCT=2.28, where TTL is the axial distance from the object side of the first lens to the imaging surface, and ΣCT is the sum of the center thicknesses of all lenses on the optical axis.

[0102] |f345 / f123|=5.40, wherein f123 is the combined focal length of the first lens, the second lens and the third lens, and f345 is the combined focal length of the third lens, the fourth lens and the fifth lens.

[0103] |f12 / f234|=2.97, wherein f12 is the combined focal length of the first lens and the second lens, and f234 is the combined focal length of the second lens, the third lens, and the fourth lens.

[0104] (SAG42+SAG41) / (SAG42-SAG41)=2.85, wherein SAG41 is the on-axis distance between the intersection of the object side of the fourth lens and the optical axis to the vertex of the effective radius of the object side of the fourth lens, and SAG42 is the on-axis distance between the intersection of the image side of the fourth lens and the optical axis to the vertex of the effective radius of the image side of the fourth lens.

[0105] SL / SD=1.34, where SD is the distance from the aperture to the image side of the last lens, and SL is the axial distance from the aperture to the imaging surface.

[0106] In Example 1, the object side surface and the image side surface of any one of the first lens E1 to the fifth lens E5 are aspherical surfaces. Table 3 shows high-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28 and A30 of the aspherical mirror surfaces S1-S10 that can be used in Example 1.

[0107] Face number A4 A6 A8 A10 A12 A14 A16 S1 -5.9422E-03 6.0318E-02 -9.1751E-01 7.8480E+00 -4.3651E+01 1.6698E+02 -4.5436E+02 S2 -2.0637E-01 9.0100E-01 -2.8525E+00 7.8164E+00 -1.8251E+01 3.5047E+01 -5.3821E+01 S3 -5.5455E-01 1.4284E+00 -3.4396E+00 7.7668E+00 1.1968E+01 -2.8460E+02 1.5177E+03 S4 -4.6768E-01 7.5285E-01 1.8276E+00 4.5211E+01 -1.7073E+03 2.3621E+04 -1.9219E+05 S5 1.9377E-01 2.9211E+00 -6.7253E+01 1.1136E+03 -1.2478E+04 9.7923E+04 -5.5148E+05 S6 2.8785E-01 5.4876E-01 -2.9908E+00 3.7304E+00 2.2252E+02 -2.6719E+03 1.6269E+04 S7 1.3177E-01 7.3500E-01 -6.0943E+00 2.4126E+01 -6.1832E+01 1.1008E+02 -1.3987E+02 S8 2.4992E+00 -7.4780E+00 1.0281E+01 4.4487E+00 -4.9521E+01 1.0960E+02 -1.4325E+02 S9 3.7958E+00 -1.4634E+01 3.5298E+01 -6.2188E+01 8.2804E+01 -8.2519E+01 6.0882E+01 S10 4.7493E-01 -1.9554E+00 3.4575E+00 -4.0207E+00 3.3774E+00 -1.9979E+00 7.4985E-01 Face number A18 A20 A22 A24 A26 A28 A30 S1 8.9395E+02 -1.2753E+03 1.3053E+03 -9.3332E+02 4.4205E+02 -1.2448E+02 1.5761E+01 S2 6.4606E+01 -5.9234E+01 4.0316E+01 -1.9568E+01 6.3581E+00 -1.2321E+00 1.0716E-01 S3 -4.0197E+03 4.3436E+03 4.7835E+03 -2.2398E+04 3.1460E+04 -2.1123E+04 5.7182E+03 S4 1.0260E+06 -3.7379E+06 9.3785E+06 -1.5968E+07 1.7639E+07 -1.1410E+07 3.2822E+06 S5 2.2564E+06 -6.7180E+06 1.4412E+07 -2.1712E+07 2.1810E+07 -1.3123E+07 3.5784E+06 S6 -6.2730E+04 1.6325E+05 -2.9161E+05 3.5331E+05 -2.7782E+05 1.2797E+05 -2.6212E+04 S7 1.2813E+02 -8.4641E+01 3.9934E+01 -1.3136E+01 2.8669E+00 -3.7399E-01 2.2129E-02 S8 1.2634E+02 -7.8211E+01 3.4190E+01 -1.0368E+01 2.0789E+00 -2.4808E-01 1.3345E-02 S9 -3.3060E+01 1.3126E+01 -3.7602E+00 7.5634E-01 -1.0137E-01 8.1333E-03 -2.9564E-04 S10 -1.1969E-01 -3.4477E-02 2.5767E-02 -7.0738E-03 1.0504E-03 -8.2049E-05 2.5799E-06

[0108] Table 3

[0109] Figure 2a The axial chromatic aberration curve of the optical imaging lens of Example 1 is shown, which indicates the deviation of light of different wavelengths from the focal point behind the lens. Figure 2b The astigmatism curve of the optical imaging lens of Example 1 is shown, which represents the meridional image curvature and the sagittal image curvature. Figure 2c The magnification chromatic aberration curve of the optical imaging lens of Example 1 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. Figure 2a to Figure 2c It can be seen from the figure that the optical imaging lens provided in Example 1 can achieve good imaging quality. Specific embodiment 2

[0111] Figure 3 Schematic diagram of the lens group structure of the optical imaging lens embodiment 2 of the present application. The optical imaging lens includes, in order from the object side to the image side along the optical axis: a first lens E1, an aperture STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6 and an imaging surface S13.

[0112] The first lens E1 has positive focal power, its object side surface S1 is convex, and its image side surface S2 is convex. The second lens E2 has negative focal power, its object side surface S3 is concave, and its image side surface S4 is concave. The third lens E3 has negative focal power, its object side surface S5 is concave, and its image side surface S6 is convex. The fourth lens E4 has positive focal power, its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has negative focal power, its object side surface S9 is concave, and its image side surface S10 is concave. The filter E6 has an object side surface S11 and an image side surface S12. The light from the object passes through each surface of surfaces S1 to S12 in sequence and is finally imaged on the imaging surface S13.

[0113] As shown in Table 4, it is a basic parameter table of the optical imaging lens of Example 2, wherein the units of the radius of curvature, thickness, and focal length are all millimeters (mm).

[0114]

[0115] Table 4

[0116] As shown in Table 5, in Example 2, the total effective focal length of the optical imaging lens is f=4.91 mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S13 of the optical imaging lens is 4.77 mm, and half of the diagonal length of the effective pixel area on the imaging surface S13 is ImgH=2.19 mm.

[0117]

[0118]

[0119] Table 5

[0120] The optical imaging lens in Example 2 satisfies:

[0121] TTL / f=0.97, where TTL is the axial distance from the object side of the first lens to the imaging surface, and f is the effective focal length of the optical imaging system.

[0122] TTL / (T34+CT4)=3.06, wherein TTL is the on-axis distance from the object side of the first lens to the imaging surface, T34 is the air interval between the third lens and the fourth lens on the optical axis, and CT4 is the center thickness of the fourth lens on the optical axis.

[0123] T23 / (T12+CT2)=0.96, wherein T23 is the air interval between the second lens and the third lens on the optical axis, T12 is the air interval between the first lens and the second lens on the optical axis, and CT2 is the center thickness of the second lens on the optical axis.

[0124] T34 / (CT2+CT3)=2.18, wherein T34 is the air interval between the third lens and the fourth lens on the optical axis, CT2 is the center thickness of the second lens on the optical axis, and CT3 is the center thickness of the third lens on the optical axis.

[0125] |f4 / R8|+|f5 / R9|=3.78, wherein f4 is the effective focal length of the fourth lens, f5 is the effective focal length of the fifth lens, R8 is the curvature radius of the image side surface of the fourth lens, and R9 is the curvature radius of the object side surface of the fifth lens.

[0126] (R7+R8) / (R7-R8)=1.84, wherein R7 is the radius of curvature of the object side surface of the fourth lens, and R8 is the radius of curvature of the image side surface of the fourth lens.

[0127] f / f4=3.53, wherein f is the effective focal length of the optical imaging system, and f4 is the effective focal length of the fourth lens.

[0128] f1 / R1=1.70, wherein f1 is the effective focal length of the first lens, and R1 is the radius of curvature of the object side of the first lens.

[0129] TTL / ΣCT=2.18, where TTL is the axial distance from the object side of the first lens to the imaging surface, and ΣCT is the sum of the center thicknesses of all lenses on the optical axis.

[0130] |f345 / f123|=1.29, wherein f123 is the combined focal length of the first lens, the second lens and the third lens, and f345 is the combined focal length of the third lens, the fourth lens and the fifth lens.

[0131] |f12 / f234|=2.84, wherein f12 is the combined focal length of the first lens and the second lens, and f234 is the combined focal length of the second lens, the third lens, and the fourth lens.

[0132] (SAG42+SAG41) / (SAG42-SAG41)=2.65, wherein SAG41 is the on-axis distance between the intersection of the object side of the fourth lens and the optical axis to the vertex of the effective radius of the object side of the fourth lens, and SAG42 is the on-axis distance between the intersection of the image side of the fourth lens and the optical axis to the vertex of the effective radius of the image side of the fourth lens.

[0133] SL / SD=1.34, where SD is the distance from the aperture to the image side of the last lens, and SL is the axial distance from the aperture to the imaging surface.

[0134] In Example 2, the object side surface and the image side surface of any one of the first lens E1 to the fifth lens E5 are aspherical surfaces. Table 6 shows high-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28 and A30 of the aspherical mirror surfaces S1-S10 that can be used in Example 1.

[0135]

[0136]

[0137] Table 6

[0138] Figure 4a The axial chromatic aberration curve of the optical imaging lens of Example 2 is shown, which indicates that light of different wavelengths deviates from the focal point behind the lens. Figure 4b The astigmatism curve of the optical imaging lens of Example 2 is shown, which represents the meridional image curvature and the sagittal image curvature. Figure 4c The magnification chromatic aberration curve of the optical imaging lens of Example 2 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. Figures 4a to 4c It can be seen from the figure that the optical imaging lens provided in Example 2 can achieve good imaging quality. Specific embodiment 3

[0140] Figure 5 Schematic diagram of the lens group structure of the optical imaging lens embodiment 3 of the present application. The optical imaging lens includes, in order from the object side to the image side along the optical axis: a first lens E1, an aperture STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6 and an imaging surface S13.

[0141] The first lens E1 has positive focal power, its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has negative focal power, its object side surface S3 is concave, and its image side surface S4 is convex. The third lens E3 has negative focal power, its object side surface S5 is concave, and its image side surface S6 is convex. The fourth lens E4 has positive focal power, its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has negative focal power, its object side surface S9 is concave, and its image side surface S10 is concave. The filter E6 has an object side surface S11 and an image side surface S12. The light from the object passes through each surface of surfaces S1 to S12 in sequence and is finally imaged on the imaging surface S13.

[0142] As shown in Table 7, it is a basic parameter table of the optical imaging lens of Example 3, wherein the units of the radius of curvature, thickness, and focal length are all millimeters (mm).

[0143]

[0144] Table 7

[0145] As shown in Table 8, in Example 3, the total effective focal length of the optical imaging lens is f=4.85 mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S13 of the optical imaging lens is 4.83 mm, and half of the diagonal length of the effective pixel area on the imaging surface S13 is ImgH=2.19 mm.

[0146]

[0147] Table 8

[0148] The optical imaging lens in Example 3 satisfies:

[0149] TTL / f=1.00, where TTL is the axial distance from the object side of the first lens to the imaging surface, and f is the effective focal length of the optical imaging system.

[0150] TTL / (T34+CT4)=3.08, wherein TTL is the on-axis distance from the object side of the first lens to the imaging surface, T34 is the air interval between the third lens and the fourth lens on the optical axis, and CT4 is the center thickness of the fourth lens on the optical axis.

[0151] T23 / (T12+CT2)=0.95, wherein T23 is the air interval between the second lens and the third lens on the optical axis, T12 is the air interval between the first lens and the second lens on the optical axis, and CT2 is the center thickness of the second lens on the optical axis.

[0152] T34 / (CT2+CT3)=1.88, wherein T34 is the air interval between the third lens and the fourth lens on the optical axis, CT2 is the center thickness of the second lens on the optical axis, and CT3 is the center thickness of the third lens on the optical axis.

[0153] |f4 / R8|+|f5 / R9|=3.54, wherein f4 is the effective focal length of the fourth lens, f5 is the effective focal length of the fifth lens, R8 is the curvature radius of the image side surface of the fourth lens, and R9 is the curvature radius of the object side surface of the fifth lens.

[0154] (R7+R8) / (R7-R8)=1.64, wherein R7 is the radius of curvature of the object side surface of the fourth lens, and R8 is the radius of curvature of the image side surface of the fourth lens.

[0155] f / f4=3.09, wherein f is the effective focal length of the optical imaging system, and f4 is the effective focal length of the fourth lens.

[0156] f1 / R1=1.88, wherein f1 is the effective focal length of the first lens, and R1 is the radius of curvature of the object side of the first lens.

[0157] TTL / ΣCT=2.13, where TTL is the axial distance from the object side of the first lens to the imaging surface, and ΣCT is the sum of the center thicknesses of all lenses on the optical axis.

[0158] |f345 / f123|=0.80, wherein f123 is the combined focal length of the first lens, the second lens and the third lens, and f345 is the combined focal length of the third lens, the fourth lens and the fifth lens.

[0159] |f12 / f234|=2.08, wherein f12 is the combined focal length of the first lens and the second lens, and f234 is the combined focal length of the second lens, the third lens, and the fourth lens.

[0160] (SAG42+SAG41) / (SAG42-SAG41)=2.24, wherein SAG41 is the on-axis distance between the intersection of the object side of the fourth lens and the optical axis to the vertex of the effective radius of the object side of the fourth lens, and SAG42 is the on-axis distance between the intersection of the image side of the fourth lens and the optical axis to the vertex of the effective radius of the image side of the fourth lens.

[0161] SL / SD=1.29, where SD is the distance from the aperture to the image side of the last lens, and SL is the axial distance from the aperture to the imaging surface.

[0162] In Example 3, the object side surface and the image side surface of any one of the first lens E1 to the fifth lens E5 are aspherical surfaces. Table 9 shows high-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28 and A30 of the aspherical mirror surfaces S1-S10 that can be used in Example 1.

[0163]

[0164]

[0165] Table 9

[0166] Figure 6a The axial chromatic aberration curve of the optical imaging lens of Example 3 is shown, which indicates that light of different wavelengths deviates from the focal point behind the lens. Figure 6b The astigmatism curve of the optical imaging lens of Example 3 is shown, which represents the meridional image curvature and the sagittal image curvature. Figure 6c The magnification chromatic aberration curve of the optical imaging lens of Example 3 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. Figures 6a to 6c It can be seen from the figure that the optical imaging lens provided in Example 3 can achieve good imaging quality. Specific embodiment 4

[0168] Figure 7 Schematic diagram of the lens group structure of the optical imaging lens embodiment 4 of the present application. The optical imaging lens includes, in order from the object side to the image side along the optical axis: a first lens E1, an aperture STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6 and an imaging surface S13.

[0169] The first lens E1 has positive focal power, its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has positive focal power, its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has negative focal power, its object side surface S5 is concave, and its image side surface S6 is convex. The fourth lens E4 has positive focal power, its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has negative focal power, its object side surface S9 is concave, and its image side surface S10 is convex. The filter E6 has an object side surface S11 and an image side surface S12. The light from the object passes through each surface of surfaces S1 to S12 in sequence and is finally imaged on the imaging surface S13.

[0170] As shown in Table 10, it is a basic parameter table of the optical imaging lens of Example 4, wherein the units of the curvature radius, thickness, and focal length are all millimeters (mm).

[0171]

[0172]

[0173] Table 10

[0174] As shown in Table 11, in Example 4, the total effective focal length of the optical imaging lens is f=4.85 mm, the distance TTL on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S13 of the optical imaging lens is 4.80 mm, and half of the diagonal length of the effective pixel area on the imaging surface S13 is ImgH=2.19 mm.

[0175]

[0176] Table 11

[0177] The optical imaging lens in Example 4 satisfies:

[0178] TTL / f=0.99, where TTL is the axial distance from the object side of the first lens to the imaging surface, and f is the effective focal length of the optical imaging system.

[0179] TTL / (T34+CT4)=2.69, wherein TTL is the on-axis distance from the object side of the first lens to the imaging surface, T34 is the air interval between the third lens and the fourth lens on the optical axis, and CT4 is the center thickness of the fourth lens on the optical axis.

[0180] T23 / (T12+CT2)=1.75, wherein T23 is the air interval between the second lens and the third lens on the optical axis, T12 is the air interval between the first lens and the second lens on the optical axis, and CT2 is the center thickness of the second lens on the optical axis.

[0181] T34 / (CT2+CT3)=2.46, wherein T34 is the air interval between the third lens and the fourth lens on the optical axis, CT2 is the center thickness of the second lens on the optical axis, and CT3 is the center thickness of the third lens on the optical axis.

[0182] |f4 / R8|+|f5 / R9|=3.97, wherein f4 is the effective focal length of the fourth lens, f5 is the effective focal length of the fifth lens, R8 is the curvature radius of the image side surface of the fourth lens, and R9 is the curvature radius of the object side surface of the fifth lens.

[0183] (R7+R8) / (R7-R8)=2.16, wherein R7 is the radius of curvature of the object side surface of the fourth lens, and R8 is the radius of curvature of the image side surface of the fourth lens.

[0184] f / f4=3.54, wherein f is the effective focal length of the optical imaging system, and f4 is the effective focal length of the fourth lens.

[0185] f1 / R1=2.79, wherein f1 is the effective focal length of the first lens, and R1 is the radius of curvature of the object side of the first lens.

[0186] TTL / ΣCT=2.33, where TTL is the axial distance from the object side of the first lens to the imaging surface, and ΣCT is the sum of the center thicknesses of all lenses on the optical axis.

[0187] |f345 / f123|=1.59, wherein f123 is the combined focal length of the first lens, the second lens and the third lens, and f345 is the combined focal length of the third lens, the fourth lens and the fifth lens.

[0188] |f12 / f234|=2.46, wherein f12 is the combined focal length of the first lens and the second lens, and f234 is the combined focal length of the second lens, the third lens, and the fourth lens.

[0189] (SAG42+SAG41) / (SAG42-SAG41)=3.25, wherein SAG41 is the on-axis distance between the intersection of the object side of the fourth lens and the optical axis to the vertex of the effective radius of the object side of the fourth lens, and SAG42 is the on-axis distance between the intersection of the image side of the fourth lens and the optical axis to the vertex of the effective radius of the image side of the fourth lens.

[0190] SL / SD=1.29, where SD is the distance from the aperture to the image side of the last lens, and SL is the axial distance from the aperture to the imaging surface.

[0191] In Example 4, the object side surface and the image side surface of any one of the first lens E1 to the fifth lens E5 are aspherical surfaces. Table 12 shows high-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28 and A30 of the aspherical mirror surfaces S1-S10 that can be used in Example 1.

[0192] Face number A4 A6 A8 A10 A12 A14 A16 S1 -8.5735E-03 2.6237E-01 -2.5966E+00 1.5961E+01 -6.5332E+01 1.8543E+02 -3.7310E+02 S2 -7.9333E-01 3.6642E+00 -7.3954E+00 -3.2072E+01 3.5550E+02 -1.6597E+03 5.0043E+03 S3 -7.9742E-01 7.7195E-01 4.0215E+01 -6.2920E+02 5.4919E+03 -3.1931E+04 1.2974E+05 S4 -1.0180E-01 -4.7187E+00 1.1665E+02 -1.7833E+03 1.8312E+04 -1.3030E+05 6.5748E+05 S5 2.1529E-01 3.1035E+00 -7.5792E+01 1.2089E+03 -1.2822E+04 9.3816E+04 -4.8552E+05 S6 3.3034E-01 -3.5519E-02 4.6420E+00 -7.0546E+01 7.0529E+02 -4.8895E+03 2.3901E+04 S7 1.8976E-01 6.8266E-01 -5.8348E+00 2.2013E+01 -5.2735E+01 8.7465E+01 -1.0428E+02 S8 2.0688E+00 -4.3214E+00 1.6915E+00 1.5005E+01 -4.7012E+01 7.8522E+01 -8.7898E+01 S9 3.1313E+00 -9.9841E+00 2.0065E+01 -2.9975E+01 3.5226E+01 -3.2310E+01 2.2581E+01 S10 2.0267E-01 -7.3909E-01 3.6864E-01 1.3690E+00 -3.4927E+00 4.4876E+00 -3.8123E+00 Face number A18 A20 A22 A24 A26 A28 A30 S1 5.3798E+02 -5.5633E+02 4.0857E+02 -2.0807E+02 7.0091E+01 -1.4152E+01 1.3130E+00 S2 -1.0625E+04 1.6281E+04 -1.7972E+04 1.3958E+04 -7.2399E+03 2.2500E+03 -3.1655E+02 S3 -3.7549E+05 7.7765E+05 -1.1429E+06 1.1630E+06 -7.7862E+05 3.0830E+05 -5.4676E+04 S4 -2.3831E+06 6.2180E+06 -1.1566E+07 1.4946E+07 -1.2738E+07 6.4310E+06 -1.4556E+06 S5 1.8017E+06 -4.8092E+06 9.1507E+06 -1.2106E+07 1.0578E+07 -5.4874E+06 1.2794E+06 S6 -8.3108E+04 2.0572E+05 -3.5909E+05 4.3122E+05 -3.3863E+05 1.5641E+05 -3.2197E+04 S7 9.0928E+01 -5.8234E+01 2.7175E+01 -9.0151E+00 2.0180E+00 -2.7340E-01 1.6918E-02 S8 7.0047E+01 -4.0420E+01 1.6803E+01 -4.9076E+00 9.5496E-01 -1.1101E-01 5.8218E-03 S9 -1.1793E+01 4.5301E+00 -1.2564E+00 2.4410E-01 -3.1473E-02 2.4168E-03 -8.3597E-05 S10 2.2785E+00 -9.7236E-01 2.9443E-01 -6.1708E-02 8.5001E-03 -6.9140E-04 2.5137E-05

[0193] Table 12

[0194] Figure 8a The axial chromatic aberration curve of the optical imaging lens of Example 4 is shown, which indicates the deviation of light of different wavelengths from the focal point behind the lens. Figure 8b The astigmatism curve of the optical imaging lens of Example 4 is shown, which represents the meridional image curvature and the sagittal image curvature. Figure 8cThe magnification chromatic aberration curve of the optical imaging lens of Example 4 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. Figures 8a to 8c It can be seen from the figure that the optical imaging lens provided in Example 4 can achieve good imaging quality.

[0195] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, improvements, equivalent substitutions, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An optical imaging lens, characterized in that: The optical imaging lens has five lenses with optical power, and the optical imaging lens includes, in order from the object side to the image side along the optical axis: A first lens having positive optical power, whose object side surface is convex; a second lens having positive or negative optical power; The third lens has a negative optical power, and its object side surface is concave and its image side surface is convex; a fourth lens element having positive refractive power, whose object side surface is concave and image side surface is convex; a fifth lens having negative optical power, whose object side surface is concave; Wherein, the on-axis distance TTL from the object side of the first lens to the imaging surface and the effective focal length f of the optical imaging lens satisfy 0.97≤TTL / f≦1.0; The effective focal length f of the optical imaging lens and the effective focal length f4 of the fourth lens satisfy: 3.09≦f / f4≦3.

54.

2. The optical imaging lens according to claim 1, wherein: An air interval T23 between the second lens and the third lens on the optical axis, an air interval T12 between the first lens and the second lens on the optical axis, and a center thickness CT2 of the second lens on the optical axis satisfy: 0.95≦T23 / (T12+CT2)≦1.

75.

3. The optical imaging lens according to claim 1, wherein: An air interval T34 between the third lens and the fourth lens on the optical axis, a center thickness CT2 of the second lens on the optical axis, and a center thickness CT3 of the third lens on the optical axis satisfy: 1.88≦T34 / (CT2+CT3)≦2.

5.

4. The optical imaging lens according to claim 1, wherein: The effective focal length f4 of the fourth lens, the effective focal length f5 of the fifth lens, the curvature radius R8 of the image side surface of the fourth lens, and the curvature radius R9 of the object side surface of the fifth lens satisfy: 3.54≦|f4 / R8|+|f5 / R9|≦3.

98.

5. The optical imaging lens according to claim 1, wherein: The curvature radius R7 of the object side surface of the fourth lens and the curvature radius R8 of the image side surface of the fourth lens satisfy: 1.64≦(R7+R8) / (R7-R8)≦2.

16.

6. The optical imaging lens according to claim 1, wherein: The effective focal length f1 of the first lens and the curvature radius R1 of the object side surface of the first lens satisfy: 1.7≦f1 / R1≦2.

79.

7. The optical imaging lens according to claim 1, wherein: The on-axis distance TTL from the object side surface of the first lens to the imaging surface and the sum ΣCT of the center thicknesses of all lenses on the optical axis satisfy: 2.13≦TTL / ΣCT≦2.

33.

8. The optical imaging lens according to claim 1, wherein: A combined focal length f123 of the first lens, the second lens and the third lens and a combined focal length f345 of the third lens, the fourth lens and the fifth lens satisfy: 0.8≦|f345 / f123|≦5.

4.

9. The optical imaging lens according to claim 1, wherein: The combined focal length f12 of the first lens and the second lens and the combined focal length f234 of the second lens, the third lens and the fourth lens satisfy: 2.08≦|f12 / f234|≦3.

0.

10. The optical imaging lens according to claim 1, wherein: The on-axis distance SAG41 between the intersection of the object side of the fourth lens and the optical axis to the effective radius vertex of the object side of the fourth lens and the on-axis distance SAG42 between the intersection of the image side of the fourth lens and the optical axis to the effective radius vertex of the image side of the fourth lens satisfy: 2.24≦(SAG42+SAG41) / (SAG42-SAG41)≦3.

25.

11. The optical imaging lens according to claim 1, wherein: The distance SD from the aperture to the image side of the last lens and the axial distance SL from the aperture to the imaging surface satisfy: 1.29≦SL / SD≦1.

34.

12. An optical imaging lens, characterized in that: The optical imaging lens has five lenses with optical power, and the optical imaging lens includes, in order from the object side to the image side along the optical axis: A first lens having positive optical power, whose object side surface is convex; a second lens having positive or negative optical power; The third lens has a negative optical power, and its object side surface is concave and its image side surface is convex; a fourth lens element having positive refractive power, whose object side surface is concave and image side surface is convex; a fifth lens having negative optical power, whose object side surface is concave; The axial distance TTL from the object side of the first lens to the imaging surface, the air interval T34 between the third lens and the fourth lens on the optical axis, and the center thickness CT4 of the fourth lens on the optical axis satisfy: 2.69≦TTL / (T34+CT4)≦3.08; The effective focal length f of the optical imaging lens and the effective focal length f4 of the fourth lens satisfy: 3.09≦f / f4≦3.

54.

13. The optical imaging lens according to claim 12, wherein: An air interval T23 between the second lens and the third lens on the optical axis, an air interval T12 between the first lens and the second lens on the optical axis, and a center thickness CT2 of the second lens on the optical axis satisfy: 0.95≦T23 / (T12+CT2)≦1.

75.

14. The optical imaging lens according to claim 12, wherein: An air interval T34 between the third lens and the fourth lens on the optical axis, a center thickness CT2 of the second lens on the optical axis, and a center thickness CT3 of the third lens on the optical axis satisfy: 1.88≦T34 / (CT2+CT3)≦2.

5.

15. The optical imaging lens according to claim 12, wherein: The effective focal length f4 of the fourth lens, the effective focal length f5 of the fifth lens, the curvature radius R8 of the image side surface of the fourth lens, and the curvature radius R9 of the object side surface of the fifth lens satisfy: 3.54≦|f4 / R8|+|f5 / R9|≦3.

98.

16. The optical imaging lens according to claim 12, wherein: The curvature radius R7 of the object side surface of the fourth lens and the curvature radius R8 of the image side surface of the fourth lens satisfy: 1.64≦(R7+R8) / (R7-R8)≦2.

16.

17. The optical imaging lens according to claim 12, wherein: The effective focal length f1 of the first lens and the curvature radius R1 of the object side surface of the first lens satisfy: 1.7≦f1 / R1≦2.

79.

18. The optical imaging lens according to claim 12, wherein: The on-axis distance TTL from the object side surface of the first lens to the imaging surface and the sum ΣCT of the center thicknesses of all lenses on the optical axis satisfy: 2.13≦TTL / ΣCT≦2.

33.

19. The optical imaging lens according to claim 12, wherein: A combined focal length f123 of the first lens, the second lens and the third lens and a combined focal length f345 of the third lens, the fourth lens and the fifth lens satisfy: 0.8≦|f345 / f123|≦5.

4.

20. The optical imaging lens according to claim 12, wherein: The combined focal length f12 of the first lens and the second lens and the combined focal length f234 of the second lens, the third lens and the fourth lens satisfy: 2.08≦|f12 / f234|≦3.

0.

21. The optical imaging lens according to claim 12, wherein: The on-axis distance SAG41 between the intersection of the object side of the fourth lens and the optical axis to the effective radius vertex of the object side of the fourth lens and the on-axis distance SAG42 between the intersection of the image side of the fourth lens and the optical axis to the effective radius vertex of the image side of the fourth lens satisfy: 2.24≦(SAG42+SAG41) / (SAG42-SAG41)≦3.

25.

22. The optical imaging lens according to claim 12, wherein: The distance SD from the aperture to the image side of the last lens and the axial distance SL from the aperture to the imaging surface satisfy: 1.29≦SL / SD≦1.34.

Images