Optical imaging lens

Abstract

The present application discloses an optical imaging lens, which comprises, in order from the object side to the image side along the optical axis: a first lens with optical power, whose image side surface is a concave surface; a second lens with optical power; a third lens with negative optical power; a fourth lens with optical power, whose object side surface is a concave surface; and a fifth lens with optical power; an axial distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens and a half of the diagonal length of the effective pixel area on the imaging surface ImgH satisfy: TTL / ImgH<1.2; a curvature radius R1 of the object side surface of the first lens and a curvature radius R10 of the image side surface of the fifth lens satisfy: 0.7<R1 / R10<1.6; a total effective focal length f of the optical imaging lens and an entrance pupil diameter EPD of the optical imaging lens satisfy 1.9<f / EPD<2.5.

Description

Technical Field

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

[0002] In recent years, with the development of science and technology, the market demand for optical imaging lenses suitable for portable electronic products has gradually increased. The development of smartphones has greatly improved the performance of software such as imaging systems installed on them, which has greatly changed people's lives. However, it also makes people expect the performance of hardware such as camera modules to be further improved. The camera module includes an optical imaging lens, which is used to gather and adjust the imaging light. The adjusted imaging light is irradiated on, for example, a photosensitive chip to form an image.

[0003] Currently, the components are stacked more and more densely in the limited installation space inside the mobile phone, and the requirements for the size of the camera module are becoming more and more stringent. The requirement for miniaturization of the camera module will inevitably require the size of the optical imaging lens to be greatly reduced and the thickness to be thinner. However, the optical imaging lens still needs to meet the requirements of high imaging quality.

[0004] In order to meet the needs of miniaturization and satisfy the imaging requirements, an optical imaging lens is needed that can take into account the characteristics of ultra-thinness and good imaging quality. Summary of the invention

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

[0006] The present application provides an optical imaging lens, which includes, in order from the object side to the image side along the optical axis: a first lens with optical power, whose image side surface is a concave surface; a second lens with optical power; a third lens with negative optical power; a fourth lens with optical power, whose object side surface is a concave surface; and a fifth lens with optical power; an axial distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens and half of the diagonal length of the effective pixel area on the imaging surface ImgH can satisfy: TTL / ImgH<1.2; a curvature radius R1 of the object side surface of the first lens and a curvature radius R10 of the image side surface of the fifth lens can satisfy: 0.7<R1 / R10<1.6; a total effective focal length f of the optical imaging lens and an entrance pupil diameter EPD of the optical imaging lens can satisfy 1.9<f / EPD<2.5.

[0007] In one embodiment, at least one aspherical mirror surface is provided from the object side surface of the first lens to the image side surface of the fifth lens.

[0008] In one embodiment, the total effective focal length f of the optical imaging lens, the effective focal length f4 of the fourth lens element, and the effective focal length f5 of the fifth lens element may satisfy: 0.5<f / (f4-f5)<1.0.

[0009] In one embodiment, the combined focal length f12 of the first lens and the second lens and the combined focal length f34 of the third lens and the fourth lens may satisfy: 0.5<f34 / f12<1.0.

[0010] In one embodiment, an edge thickness ET2 of the second lens and an edge thickness ET3 of the third lens may satisfy: 0.5<ET3 / ET2<1.0.

[0011] In one embodiment, 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, 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, and the on-axis distance SAG51 between the intersection of the object side surface of the fifth lens and the optical axis to the effective radius vertex of the object side surface of the fifth lens may satisfy: 0.5<SAG51 / (SAG41+SAG42)<1.0.

[0012] In one embodiment, the maximum effective radius DT32 of the image-side surface of the third lens and the maximum effective radius DT41 of the object-side surface of the fourth lens may satisfy: 0.5<DT32 / DT41<1.0.

[0013] In one implementation, a center thickness CT5 of the fifth lens on the optical axis and an edge thickness ET5 of the fifth lens may satisfy: 0.7<CT5 / ET5<1.2.

[0014] In one embodiment, the total effective focal length f of the optical imaging lens and the curvature radius R9 of the object-side surface of the fifth lens element may satisfy: -1.5<f / R9<-0.5.

[0015] In one embodiment, an air interval T34 between the third lens and the fourth lens on the optical axis and an edge thickness ET4 of the fourth lens may satisfy: 0.6<ET4 / T34<1.2.

[0016] In one embodiment, 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 may satisfy: 0.5<(R7-R8) / (R7+R8)<1.0.

[0017] In one embodiment, the sum of the center thickness CT4 of the fourth lens on the optical axis and the air interval ΣAT between any two adjacent lenses from the first lens to the fifth lens on the optical axis may satisfy: 0.4<CT4 / ΣAT<1.0.

[0018] In one embodiment, the first lens has positive optical power, and its object side surface may be convex; the second lens has negative optical power; the fourth lens has positive optical power, and its image side surface may be convex; the fifth lens has negative optical power, and its object side surface may be concave, and its image side surface may be concave.

[0019] 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: a first lens with optical focal length, whose image side surface is a concave surface; a second lens with optical focal length; a third lens with negative optical focal length; a fourth lens with optical focal length, whose object side surface is a concave surface; and a fifth lens with optical focal length; an axial distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens and half of the diagonal length of the effective pixel area on the imaging surface ImgH satisfy the following conditions: TTL / ImgH<1.2; the total effective focal length f of the optical imaging lens and the optical imaging The entrance pupil diameter EPD of the lens may satisfy 1.9<f / EPD<2.5; 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, 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, and the on-axis distance SAG51 between the intersection of the object side surface of the fifth lens and the optical axis to the effective radius vertex of the object side surface of the fifth lens may satisfy: 0.5<SAG51 / (SAG41+SAG42)<1.0.

[0020] The present application adopts five lenses, and by reasonably allocating the optical focal length, surface shape, center thickness of each lens and axial spacing between each lens, the above-mentioned optical imaging lens has at least one beneficial effect such as ultra-thinness and good imaging quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, purposes and advantages of the present application will become more apparent through the following detailed description of non-limiting embodiments in conjunction with the accompanying drawings. In the accompanying drawings:

[0022] Figure 1 A schematic structural diagram of an optical imaging lens according to Embodiment 1 of the present application is shown; FIG. 2A to FIG. 2D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 1 are respectively shown;

[0023] Figure 3 A schematic structural diagram of an optical imaging lens according to Embodiment 2 of the present application is shown; 4A to 4D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 2 are respectively shown;

[0024] Figure 5A schematic structural diagram of an optical imaging lens according to Embodiment 3 of the present application is shown; FIG. 6A to FIG. 6D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 3 are respectively shown;

[0025] Figure 7 A schematic structural diagram of an optical imaging lens according to Embodiment 4 of the present application is shown; FIG. 8A to FIG. 8D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 4 are respectively shown;

[0026] Fig. 9 A schematic structural diagram of an optical imaging lens according to Embodiment 5 of the present application is shown; FIG. 10A to FIG. 10D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 5 are respectively shown;

[0027] Fig.11 A schematic structural diagram of an optical imaging lens according to Embodiment 6 of the present application is shown; FIG. 12A to FIG. 12D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 6 are respectively shown;

[0028] Fig.13 A schematic structural diagram of an optical imaging lens according to Embodiment 7 of the present application is shown; FIG. 14A to FIG. 14D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 7 are respectively shown;

[0029] Fig.15 A schematic structural diagram of an optical imaging lens according to Embodiment 8 of the present application is shown; FIG. 16A to FIG. 16D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 8 are respectively shown;

[0030] Fig.17 A schematic structural diagram of an optical imaging lens according to Embodiment 9 of the present application is shown; 18A to 18D The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens of Example 9 are respectively shown. DETAILED DESCRIPTION

[0031] 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.

[0032] 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.

[0033] 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.

[0034] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object is called the object side of the lens, and the surface of each lens closest to the imaging plane is called the image side of the lens.

[0035] 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.

[0036] 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 sense unless explicitly defined in this article.

[0037] 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 present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0038] The features, principles and other aspects of the present application are described in detail below.

[0039] The optical imaging lens according to the exemplary embodiment of the present application may include, for example, five lenses with optical power, namely, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. The five lenses are arranged in sequence from the object side to the image side along the optical axis. Among the first lens to the fifth lens, any two adjacent lenses may have an air gap between them.

[0040] In an exemplary embodiment, the first lens has positive or negative power, and its image side surface may be concave; the second lens has positive or negative power; the third lens has negative power; the fourth lens has positive or negative power, and its object side surface may be convex; the fifth lens has positive or negative power. By reasonably controlling the positive and negative distribution of the power of each component of the system and the curvature of the lens surface, the low-order aberrations of the control system can be effectively balanced, which is conducive to the optical imaging lens having good imaging quality.

[0041] In an exemplary embodiment, the optical imaging lens of the present application can satisfy a first lens with positive optical power, whose object side surface is convex and whose image side surface is concave; a second lens with negative optical power; a fourth lens with positive optical power, whose object side surface is concave and whose image side surface is convex; and a fifth lens with negative optical power, whose object side surface is concave and whose image side surface is concave. By allocating positive and negative optical power to the first lens, the second lens, the fourth lens, and the fifth lens, the object side surface and the image side surface of each lens maintain a reasonable shape, which is beneficial to control the coma and field curvature of the optical imaging lens and improve the imaging quality of the optical imaging lens. At the same time, because the fourth lens and the fifth lens are relatively thick, such a convex and concave lens matching can greatly reduce the total length of the optical imaging lens to achieve an ultra-thin structure.

[0042] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula TTL / ImgH<1.2, wherein TTL is the distance from the object side of the first lens of the optical imaging lens to the imaging plane of the optical imaging lens on the optical axis, and ImgH is half the diagonal length of the effective pixel area on the imaging plane. More specifically, TTL and ImgH may further satisfy 1.1<TTL / ImgH<1.2. By controlling the ratio of the total optical length and the image height of the optical imaging lens, it is beneficial to achieve ultra-thinness and high pixel of the optical imaging lens.

[0043] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 0.7<R1 / R10<1.6, wherein R1 is the radius of curvature of the object side of the first lens, and R10 is the radius of curvature of the image side of the fifth lens. More specifically, R1 and R10 may further satisfy: 0.7<R1 / R10≤1.5. Satisfying 0.7<R1 / R10<1.6 can effectively control the coma contribution rate of the two lenses, and the coma generated by the two lenses can be well balanced with the coma generated by the lens between the two lenses, which is conducive to the optical imaging lens to obtain good imaging quality.

[0044] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 1.9<f / EPD<2.5, where f is the total effective focal length of the optical imaging lens, and EPD is the entrance pupil diameter of the optical imaging lens. By controlling the ratio of the total effective focal length to the entrance pupil diameter, the amount of light entering the optical imaging lens can be controlled over a wider range, thereby making the control range of the light transmission amount of the optical imaging lens larger, which is conducive to the shooting of night scenes. In addition, the depth of field of the optical imaging lens with a large aperture is relatively small, which can make it easier to highlight the subject of the photo.

[0045] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 0.5<f / (f4-f5)<1.0, wherein f is the total effective focal length of the optical imaging lens, f4 is the effective focal length of the fourth lens, and f5 is the effective focal length of the fifth lens. When 0.5<f / (f4-f5)<1.0 is satisfied, the fourth lens and the fifth lens can be combined as a lens group with a combined focal length, and the aberrations generated by the fourth lens and the fifth lens can be balanced with the aberrations generated by the lens located on the object side of the fourth lens, thereby enabling the optical imaging lens to obtain good imaging quality and facilitate achieving high resolution.

[0046] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 0.5<f34 / f12<1.0, wherein f12 is the combined focal length of the first lens and the second lens, and f34 is the combined focal length of the third lens and the fourth lens. More specifically, f34 and f12 may further satisfy: 0.6<f34 / f12<0.9. Satisfying 0.5<f34 / f12<1.0 can balance the aberrations generated by the combination of the first lens to the fourth lens, and by controlling the contribution of the aberrations of the four lenses, the aberrations of the optical imaging lens can be kept at a reasonable level, thereby enabling the optical imaging lens to have good imaging quality.

[0047] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 0.5<ET3 / ET2<1.0, where ET2 is the edge thickness of the second lens, and ET3 is the edge thickness of the third lens. More specifically, ET3 and ET2 may further satisfy: 0.7<ET3 / ET2≤0.9. Satisfying 0.5<ET3 / ET2<1.0 may enable the optical imaging lens to have good imaging quality, lower sensitivity, and facilitate the injection molding process of the lens, so that the lens has a higher yield.

[0048] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 0.5<SAG51 / (SAG41+SAG42)<1.0, wherein SAG41 is the on-axis distance 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, SAG42 is the on-axis distance 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, and SAG51 is the on-axis distance between the intersection of the object side surface of the fifth lens and the optical axis to the effective radius vertex of the object side surface of the fifth lens. More specifically, SAG51, SAG41 and SAG42 may further satisfy: 0.5<SAG51 / (SAG41+SAG42)<0.9. Satisfying 0.5<SAG51 / (SAG41+SAG42)<1.0 can realize an ultra-thin structure of the optical imaging lens, while satisfying the control of the lens curvature, so that the sensitivity of the lens is optimized to a certain extent.

[0049] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 0.5<DT32 / DT41<1.0, wherein DT32 is the maximum effective radius of the image side of the third lens, and DT41 is the maximum effective radius of the object side of the fourth lens. More specifically, DT32 and DT41 may further satisfy: 0.7<DT32 / DT41≤0.8. Satisfying 0.5<DT32 / DT41<1.0 can reduce the size of the optical imaging lens, miniaturize the optical imaging lens, and improve its resolution.

[0050] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 0.7<CT5 / ET5<1.2, where CT5 is the center thickness of the fifth lens on the optical axis, and ET5 is the edge thickness of the fifth lens. More specifically, CT5 and ET5 may further satisfy: 0.8<CT5 / ET5<1.1. Satisfying 0.7<CT5 / ET5<1.2 can make the optical imaging lens have good imaging quality, low sensitivity, and the lens is easy to be injection molded and has a high yield.

[0051] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula -1.5<f / R9<-0.5, where f is the effective focal length of the optical imaging lens, and R9 is the radius of curvature of the object side surface of the fifth lens. Satisfying -1.5<f / R9<-0.5 can control the contribution rate of the fifth-order spherical aberration on the object side surface of the fifth lens to a certain extent, and is used to balance the fifth-order spherical aberration generated on the image side surface of the fifth lens, so that the fifth-order spherical aberration of the fifth lens is controlled within a reasonable range.

[0052] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 0.6<ET4 / T34<1.2, wherein T34 is the air interval between the third lens and the fourth lens on the optical axis, and ET4 is the edge thickness of the fourth lens. When 0.6<ET4 / T34<1.2 is satisfied, the distortion contribution of the fourth lens may be adjusted, and it is beneficial to compensate for the distortion generated by the lens close to the imaging surface in the image side direction.

[0053] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 0.5<(R7-R8) / (R7+R8)<1.0, 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. More specifically, R7 and R8 may further satisfy: 0.6<(R7-R8) / (R7+R8)≤0.9. Satisfying 0.5<(R7-R8) / (R7+R8)<1.0 can control the contribution rate of its third-order astigmatism to a certain extent, so that the third-order astigmatism of the fourth lens is within a reasonable range, and the effect of high resolution at macro distance is achieved.

[0054] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 0.4<CT4 / ΣAT<1.0, where CT4 is the center thickness of the fourth lens on the optical axis, and ΣAT is the sum of the air intervals between any two adjacent lenses from the first lens to the fifth lens on the optical axis. For example, ΣAT=T12+T23+T34+T45. Satisfying 0.42<CT4 / ΣAT<1.0 can reasonably control the assembly sensitivity caused by the thickness change of the lens in the optical axis direction, which is beneficial to the assembly stability of the optical imaging lens and improves the yield rate.

[0055] In an exemplary embodiment, the optical imaging lens may further include at least one aperture. The aperture may be disposed at an appropriate position as required, for example, 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.

[0056] The optical imaging lens according to the above-mentioned embodiment of the present application may use multiple lenses, such as the five lenses described above. By reasonably allocating the focal length, surface shape, center thickness of each lens, and axial spacing between lenses, the volume of the imaging system can be effectively reduced, the sensitivity of the imaging system can be reduced, and the processability of the imaging system can be improved, making the optical imaging lens more conducive to production and processing and applicable to portable electronic products. At the same time, the optical imaging lens of the present application also has excellent optical properties such as ultra-thinness and good imaging quality.

[0057] In the embodiment of the present application, at least one of the mirror surfaces of each lens is an aspherical mirror surface, that is, at least one of the object side surface of the first lens to the image side surface of the fifth lens is an aspherical mirror surface. The characteristic of the aspherical lens is that 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 occurring during imaging can be eliminated as much as possible, thereby improving the imaging quality. Optionally, at least one of the object side surface and the image side surface of each 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 surface and the image side surface 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.

[0058] 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. If necessary, the optical imaging lens may also include other numbers of lenses.

[0059] Specific embodiments of the optical imaging lens applicable to the above-mentioned embodiments are further described below with reference to the accompanying drawings.

[0060] Example 1

[0061] The following reference Figures 1 to 2D An optical imaging lens according to Embodiment 1 of the present application is described. Figure 1 A schematic structural diagram of an optical imaging lens according to Embodiment 1 of the present application is shown.

[0062] like Figure 1 As shown, the optical imaging lens includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5 and a filter E6.

[0063] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has negative focal power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has negative focal power, and its object side surface S5 is concave, and its image side surface S6 is concave. The fourth lens E4 has positive focal power, and its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has negative focal power, and 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 optical imaging lens has an imaging surface S13, and the light from the object passes through each surface S1 to S12 in sequence and is finally imaged on the imaging surface S13.

[0064] Table 1 shows the basic parameters of the optical imaging lens of Example 1, wherein the units of the radius of curvature, thickness / distance and focal length are all millimeters (mm).

[0065]

[0066] Table 1

[0067] In Example 1, the total effective focal length f of the optical imaging lens is 2.75 mm, the ratio of the total effective focal length f to the entrance pupil diameter EPD is 2.25, the axial distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S13 is 3.20 mm, the half of the diagonal length of the effective pixel area on the imaging surface S13 ImgH is 2.75 mm, and the half of the maximum field of view angle Semi-FOV is 44.4°.

[0068] 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:

[0069]

[0070] 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 above); k is the cone coefficient; Ai is the correction coefficient of the i-th order of the aspheric surface. Table 2 below gives 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, A38, A39, 10 , A 12 , A 14 , A 16 , A 18 and A 20 .

[0071]

[0072] Table 2

[0073] Figure 2A The axial chromatic aberration curve of the optical imaging lens of Example 1 is shown, which indicates the deviation of the convergent focus of light of different wavelengths after passing through the system. 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 distortion curve of the optical imaging lens of Example 1 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 2D 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 system. FIG. 2A to FIG. 2D It can be seen that the optical imaging lens provided in Example 1 can achieve good imaging quality.

[0074] Example 2

[0075] The following reference Figures 3 to 4D The optical imaging lens according to Embodiment 2 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Figure 3 A schematic structural diagram of an optical imaging lens according to Embodiment 2 of the present application is shown.

[0076] like Figure 3 As shown, the optical imaging lens includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5 and a filter E6.

[0077] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has negative focal power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has negative focal power, and its object side surface S5 is concave, and its image side surface S6 is concave. The fourth lens E4 has positive focal power, and its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has negative focal power, and 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 optical imaging lens has an imaging surface S13, and the light from the object passes through each surface S1 to S12 in sequence and is finally imaged on the imaging surface S13.

[0078] In Example 2, the total effective focal length f of the optical imaging lens is 2.74 mm, the ratio of the total effective focal length f to the entrance pupil diameter EPD is 2.25, the axial distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S13 is 3.20 mm, the value of half the diagonal length of the effective pixel area on the imaging surface S13 ImgH is 2.75 mm, and the value of half the maximum field of view angle Semi-FOV is 44.5°.

[0079] Table 3 shows the basic parameters of the optical imaging lens of Example 2, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 4 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 2, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0080]

[0081] Table 3

[0082]

[0083] Table 4

[0084] Figure 4A The axial chromatic aberration curve of the optical imaging lens of Example 2 is shown, which indicates the deviation of the convergent focus of light of different wavelengths after passing through the system. 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 distortion curve of the optical imaging lens of Example 2 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 4D 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 system. 4A to 4D It can be seen that the optical imaging lens provided in Example 2 can achieve good imaging quality.

[0085] Example 3

[0086] The following reference Figures 5 to 6D An optical imaging lens according to Embodiment 3 of the present application is described. Figure 5 A schematic structural diagram of an optical imaging lens according to Embodiment 3 of the present application is shown.

[0087] like Figure 5 As shown, the optical imaging lens includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5 and a filter E6.

[0088] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has negative focal power, and its object side surface S3 is concave, and its image side surface S4 is convex. The third lens E3 has negative focal power, and its object side surface S5 is concave, and its image side surface S6 is concave. The fourth lens E4 has positive focal power, and its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has negative focal power, and 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 optical imaging lens has an imaging surface S13, and the light from the object passes through each surface S1 to S12 in sequence and is finally imaged on the imaging surface S13.

[0089] In Example 3, the total effective focal length f of the optical imaging lens is 2.74 mm, the ratio of the total effective focal length f to the entrance pupil diameter EPD is 2.25, the axial distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S13 is 3.20 mm, the half diagonal length ImgH of the effective pixel area on the imaging surface S13 is 2.75 mm, and the half maximum field of view angle Semi-FOV is 44.8°.

[0090] Table 5 shows the basic parameters of the optical imaging lens of Example 3, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 6 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 3, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0091]

[0092] Table 5

[0093]

[0094]

[0095] Table 6

[0096] Fig. 6A The axial chromatic aberration curve of the optical imaging lens of Example 3 is shown, which indicates the deviation of the convergent focus of light of different wavelengths after passing through the system. 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 distortion curve of the optical imaging lens of Example 3 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig.6D 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 system. FIG. 6A to FIG. 6D It can be seen that the optical imaging lens provided in Example 3 can achieve good imaging quality.

[0097] Example 4

[0098] The following reference Figures 7 to 8D An optical imaging lens according to Embodiment 4 of the present application is described. Figure 7 A schematic structural diagram of an optical imaging lens according to Embodiment 4 of the present application is shown.

[0099] like Figure 7 As shown, the optical imaging lens includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5 and a filter E6.

[0100] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has negative focal power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has negative focal power, and its object side surface S5 is convex, and its image side surface S6 is concave. The fourth lens E4 has positive focal power, and its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has negative focal power, and 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 optical imaging lens has an imaging surface S13, and the light from the object passes through each surface S1 to S12 in sequence and is finally imaged on the imaging surface S13.

[0101] In Example 4, the total effective focal length f of the optical imaging lens is 2.71 mm, the ratio of the total effective focal length f to the entrance pupil diameter EPD is 2.25, the axial distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S13 is 3.17 mm, the value ImgH of half the diagonal length of the effective pixel area on the imaging surface S13 is 2.75 mm, and the value Semi-FOV of half the maximum field of view angle is 45°.

[0102] Table 7 shows the basic parameters of the optical imaging lens of Example 4, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 8 shows 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 Example 1.

[0103]

[0104]

[0105] Table 7

[0106]

[0107] Table 8

[0108] Fig. 8A The axial chromatic aberration curve of the optical imaging lens of Example 4 is shown, which indicates the deviation of the convergent focus of light of different wavelengths after passing through the system. 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 8C The distortion curve of the optical imaging lens of Example 4 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig.8D The 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 system. FIG. 8A to FIG. 8D It can be seen that the optical imaging lens provided in Example 4 can achieve good imaging quality.

[0109] Example 5

[0110] The following reference Figures 9 to 10D An optical imaging lens according to Embodiment 5 of the present application is described. Fig. 9 A schematic structural diagram of an optical imaging lens according to Embodiment 5 of the present application is shown.

[0111] like Fig. 9 As shown, the optical imaging lens includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5 and a filter E6.

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

[0113] In Example 5, the total effective focal length f of the optical imaging lens is 2.76 mm, the ratio of the total effective focal length f to the entrance pupil diameter EPD is 2.24, the axial distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S13 is 3.20 mm, the half of the diagonal length of the effective pixel area on the imaging surface S13 ImgH is 2.75 mm, and the half of the maximum field of view angle Semi-FOV is 44.2°.

[0114] Table 9 shows the basic parameters of the optical imaging lens of Example 5, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 10 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 5, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0115]

[0116] Table 9

[0117]

[0118] Table 10

[0119] Fig. 10A The axial chromatic aberration curve of the optical imaging lens of Example 5 is shown, which indicates the deviation of the convergent focus of light of different wavelengths after passing through the system. Fig. 10B The astigmatism curve of the optical imaging lens of Example 5 is shown, which represents the meridional image curvature and the sagittal image curvature. Fig. 10C The distortion curve of the optical imaging lens of Example 5 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig. 10D The magnification chromatic aberration curve of the optical imaging lens of Example 5 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the system. FIG. 10A to FIG. 10D It can be seen that the optical imaging lens provided in Example 5 can achieve good imaging quality.

[0120] Example 6

[0121] The following reference Figures 11 to 12D An optical imaging lens according to Embodiment 6 of the present application is described. Fig.11 A schematic structural diagram of an optical imaging lens according to Example 6 of the present application is shown.

[0122] like Fig.11 As shown, the optical imaging lens includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5 and a filter E6.

[0123] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has negative focal power, and its object side surface S3 is concave, and its image side surface S4 is concave. The third lens E3 has negative focal power, and its object side surface S5 is concave, and its image side surface S6 is concave. The fourth lens E4 has positive focal power, and its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has negative focal power, and 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 optical imaging lens has an imaging surface S13, and the light from the object passes through each surface S1 to S12 in sequence and is finally imaged on the imaging surface S13.

[0124] In Example 6, the total effective focal length f of the optical imaging lens is 2.76 mm, the ratio of the total effective focal length f to the entrance pupil diameter EPD is 2.24, the axial distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S13 is 3.20 mm, the value of half the diagonal length of the effective pixel area on the imaging surface S13 ImgH is 2.75 mm, and the value of half the maximum field of view angle Semi-FOV is 44.3°.

[0125] Table 11 shows the basic parameters of the optical imaging lens of Example 6, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 12 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 6, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0126]

[0127] Table 11

[0128]

[0129]

[0130] Table 12

[0131] Fig. 12A The axial chromatic aberration curve of the optical imaging lens of Example 6 is shown, which indicates the deviation of the convergent focus of light of different wavelengths after passing through the system. Fig. 12B The astigmatism curve of the optical imaging lens of Example 6 is shown, which represents the meridional image curvature and the sagittal image curvature. Fig. 12C The distortion curve of the optical imaging lens of Example 6 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig.12D The magnification chromatic aberration curve of the optical imaging lens of Example 6 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the system. FIG. 12A to FIG. 12DIt can be seen that the optical imaging lens provided in Example 6 can achieve good imaging quality.

[0132] Example 7

[0133] The following reference Figures 13 to 14D An optical imaging lens according to Embodiment 7 of the present application is described. Fig.13 A schematic structural diagram of an optical imaging lens according to Example 7 of the present application is shown.

[0134] like Fig.13 As shown, the optical imaging lens includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5 and a filter E6.

[0135] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has negative focal power, and its object side surface S3 is concave, and its image side surface S4 is concave. The third lens E3 has negative focal power, and its object side surface S5 is convex, and its image side surface S6 is concave. The fourth lens E4 has positive focal power, and its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has negative focal power, and 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 optical imaging lens has an imaging surface S13, and the light from the object passes through each surface S1 to S12 in sequence and is finally imaged on the imaging surface S13.

[0136] In Example 7, the total effective focal length f of the optical imaging lens is 2.66 mm, the ratio of the total effective focal length f to the entrance pupil diameter EPD is 2.00, the axial distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S13 is 3.19 mm, the value of half the diagonal length of the effective pixel area on the imaging surface S13 ImgH is 2.75 mm, and the value of half the maximum field of view angle Semi-FOV is 44.9°.

[0137] Table 13 shows the basic parameters of the optical imaging lens of Example 7, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 14 shows 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.

[0138]

[0139]

[0140] Table 13

[0141] Face number A4 A6 A8 A10 A12 A14 A16 S1 7.1323E-03 -5.5432E-03 -1.4977E-03 -8.4716E-05 -4.7924E-05 3.6975E-05 -2.1925E-05 S2 -6.4247E-02 3.0192E-03 -1.5951E-03 4.3051E-04 2.0128E-04 -1.5430E-04 -8.0124E-05 S3 5.4607E-02 1.3376E-02 3.2352E-04 6.8757E-04 2.1764E-04 9.5893E-05 4.8754E-05 S4 4.8594E-02 7.5556E-03 -5.8542E-04 3.4306E-04 -8.6213E-06 -2.1851E-05 9.4061E-06 S5 -1.0032E-01 -1.2662E-03 -2.2933E-04 1.4216E-04 -2.6827E-06 -3.2013E-05 -4.5815E-05 S6 -1.5240E-01 8.3311E-03 2.7761E-03 1.5219E-03 4.9682E-04 9.2146E-05 3.8067E-06 S7 -9.0569E-02 -2.5547E-02 -5.0759E-03 8.9225E-03 5.0629E-03 -1.4495E-03 -2.5982E-03 S8 -6.4039E-03 -9.5880E-02 8.1177E-03 6.8429E-02 -3.7863E-03 -6.4143E-03 -1.1537E-02 S9 -6.9450E-01 -1.4019E-02 1.3193E-01 9.9275E-02 4.0179E-02 5.8801E-03 -7.4979E-03 S10 -2.9283E+00 6.7217E-01 -2.3249E-01 1.1452E-01 -4.5944E-02 2.5187E-02 -1.4024E-02 Face number A18 A20 A22 A24 A26 A28 A30 S1 1.8605E-05 -7.6021E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 -3.1329E-05 5.8173E-05 2.0041E-05 2.4705E-05 -1.5837E-06 -3.3034E-06 -1.3202E-05 S3 4.1602E-06 2.0551E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 1.3320E-06 2.3050E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 -1.9012E-05 -1.2416E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 -1.8223E-05 -8.1927E-06 -1.0911E-05 -3.4892E-06 -6.0789E-06 3.0266E-06 -1.1231E-08 S7 -1.1762E-03 -2.1759E-04 -2.2909E-05 -3.6577E-05 -3.9311E-05 -2.8997E-05 8.8812E-06 S8 9.8421E-03 3.5724E-03 -3.7455E-03 5.1296E-04 -1.0056E-03 1.6385E-03 -4.5376E-04 S9 1.1501E-02 1.1394E-02 1.2930E-03 1.3415E-03 -1.3636E-03 -9.2961E-05 2.5277E-04 S10 7.4097E-03 -1.8937E-03 4.3443E-03 1.4177E-03 2.3931E-03 7.0317E-04 6.2521E-04

[0142] Table 14

[0143] Fig.14A The axial chromatic aberration curve of the optical imaging lens of Example 7 is shown, which indicates the deviation of the convergent focus of light of different wavelengths after passing through the system. Fig. 14B The astigmatism curve of the optical imaging lens of Example 7 is shown, which represents the meridional image curvature and the sagittal image curvature. Fig. 14C The distortion curve of the optical imaging lens of Example 7 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig.14D The magnification chromatic aberration curve of the optical imaging lens of Example 7 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the system. FIG. 14A to FIG. 14D It can be seen that the optical imaging lens provided in Example 7 can achieve good imaging quality.

[0144] Example 8

[0145] The following reference Figures 15 to 16D An optical imaging lens according to Example 8 of the present application is described. Fig.15 A schematic structural diagram of an optical imaging lens according to Example 8 of the present application is shown.

[0146] like Fig.15 As shown, the optical imaging lens includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5 and a filter E6.

[0147] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has negative focal power, and its object side surface S3 is concave, and its image side surface S4 is concave. The object side surface S5 of the third lens E3 is convex, and its image side surface S6 is convex. The fourth lens E4 has positive focal power, and its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has negative focal power, and 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 optical imaging lens has an imaging surface S13, and the light from the object passes through each surface S1 to S12 in sequence and is finally imaged on the imaging surface S13.

[0148] In Example 8, the ratio of the total effective focal length f to the entrance pupil diameter EPD is 2.00, the value of the axial distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S13 is 3.17 mm, the value of half the diagonal length of the effective pixel area on the imaging surface S13 ImgH is 2.75 mm, and the value of half the maximum field of view angle Semi-FOV is 45.2°.

[0149] Table 15 shows the basic parameters of the optical imaging lens of Example 8, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 16 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 8, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0150]

[0151] Table 15

[0152] Face number A4 A6 A8 A10 A12 A14 A16 S1 1.0133E-02 -5.2749E-03 -1.8906E-03 -7.8144E-05 -1.1037E-04 6.1670E-05 -4.2712E-05 S2 4.9233E-02 -1.6151E-03 7.2914E-04 1.4369E-03 -1.1270E-03 2.4184E-04 1.7742E-04 S3 3.6547E-02 1.1608E-02 -9.2399E-07 5.8754E-05 2.6636E-04 -1.6083E-05 5.4406E-05 S4 4.9343E-02 1.0618E-02 -1.5918E-04 1.9625E-04 1.5336E-04 3.6663E-05 8.6524E-05 S5 -1.0310E-01 -1.9510E-03 -1.9962E-03 -5.2634E-04 -4.6625E-04 -1.8074E-04 -1.5386E-04 S6 7.1845E-02 3.6460E-02 -1.7167E-02 7.7949E-03 -2.0221E-03 1.0916E-04 3.6951E-04 S7 -5.2580E-02 -1.2141E-02 -9.0099E-03 8.8196E-04 2.7699E-03 8.7888E-04 -3.9304E-04 S8 -1.3155E-02 -1.0387E-01 4.3693E-02 4.6856E-02 -2.3968E-03 -1.4954E-02 -1.7556E-03 S9 -7.0541E-01 -1.7863E-03 1.1564E-01 1.1348E-01 4.1799E-02 6.3555E-03 -7.2468E-03 S10 -2.8970E+00 6.6819E-01 -2.3191E-01 1.1047E-01 -4.3509E-02 2.6030E-02 -1.2613E-02 Face number A18 A20 A22 A24 A26 A28 A30 S1 2.2096E-05 -2.7584E-05 4.0676E-07 -1.0716E-05 1.8789E-06 -8.0644E-06 7.3675E-06 S2 -3.2769E-04 3.1355E-04 -2.8139E-04 1.9079E-04 -1.1919E-04 1.0671E-05 2.5618E-05 S3 -3.5326E-05 2.4887E-05 1.3952E-06 3.6504E-05 1.5077E-05 1.5890E-05 -5.0563E-06 S4 4.0990E-05 5.2743E-05 1.3559E-05 1.4544E-05 -8.2123E-06 -6.2824E-06 -7.4581E-06 S5 -3.7121E-05 -1.9085E-05 1.3439E-05 8.1500E-06 1.1150E-05 5.0224E-06 1.8348E-07 S6 -2.1778E-04 1.9859E-04 -8.4178E-05 8.8354E-05 -8.5093E-06 1.8205E-06 1.1687E-05 S7 -2.5850E-04 -2.2920E-05 4.6770E-05 3.3675E-05 1.4379E-05 -8.4020E-06 -3.5727E-06 S8 9.6290E-03 -1.0561E-04 -2.8205E-03 3.1570E-04 1.9442E-04 8.4007E-04 -4.2383E-04 S9 7.3396E-03 1.5248E-02 -1.2329E-03 2.7250E-03 -1.1039E-03 -5.1760E-04 9.3305E-04 S10 7.0281E-03 -2.4335E-03 3.7693E-03 1.1130E-03 2.4752E-03 8.9764E-04 8.2898E-04

[0153] Table 16

[0154] Fig.16A The axial chromatic aberration curve of the optical imaging lens of Example 8 is shown, which indicates the deviation of the convergent focus of light of different wavelengths after passing through the system. Fig. 16B The astigmatism curve of the optical imaging lens of Example 8 is shown, which represents the meridional image curvature and the sagittal image curvature. Fig. 16C The distortion curve of the optical imaging lens of Example 8 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig.16D The magnification chromatic aberration curve of the optical imaging lens of Example 8 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the system. FIG. 16A to FIG. 16D It can be seen that the optical imaging lens provided in Example 8 can achieve good imaging quality.

[0155] Example 9

[0156] The following reference Figures 17 to 18D An optical imaging lens according to Embodiment 9 of the present application is described. Fig.17 A schematic structural diagram of an optical imaging lens according to Example 9 of the present application is shown.

[0157] like Fig.17 As shown, the optical imaging lens includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5 and a filter E6.

[0158] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has negative focal power, and its object side surface S3 is concave, and its image side surface S4 is concave. The object side surface S5 of the third lens E3 is convex, and its image side surface S6 is convex. The fourth lens E4 has positive focal power, and its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has negative focal power, and 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 optical imaging lens has an imaging surface S13, and the light from the object passes through each surface S1 to S12 in sequence and is finally imaged on the imaging surface S13.

[0159] In Example 9, the ratio of the total effective focal length f to the entrance pupil diameter EPD is 2.00, the value of the axial distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S13 is 3.19 mm, the value of half the diagonal length of the effective pixel area on the imaging surface S13 ImgH is 2.75 mm, and the value of half the maximum field of view angle Semi-FOV is 43.7°.

[0160] Table 17 shows the basic parameters of the optical imaging lens of Example 9, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 18 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 9, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0161]

[0162] Table 17

[0163]

[0164]

[0165] Table 18

[0166] Fig.18A The axial chromatic aberration curve of the optical imaging lens of Example 9 is shown, which indicates the deviation of the convergent focus of light of different wavelengths after passing through the system. Fig.18B The astigmatism curve of the optical imaging lens of Example 9 is shown, which represents the meridional image curvature and the sagittal image curvature. Fig. 18C The distortion curve of the optical imaging lens of Example 9 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig.18D The magnification chromatic aberration curve of the optical imaging lens of Example 9 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the system. 18A to 18D It can be seen that the optical imaging lens provided in Example 9 can achieve good imaging quality.

[0167] In summary, Examples 1 to 9 respectively satisfy the relationships shown in Table 19.

[0168] Conditional formula\Example 1 2 3 4 5 6 7 8 9 TTL / ImgH 1.17 1.16 1.16 1.15 1.16 1.16 1.17 1.16 1.17 R1 / R10 0.77 0.75 0.73 0.71 0.75 0.88 1.50 1.42 1.43 f / EPD 2.25 2.25 2.25 2.25 2.24 2.24 2.00 2.00 2.00 f / (f4-f5) 0.91 0.87 0.88 0.88 0.89 0.94 0.56 0.56 0.56 f34 / f12 0.66 0.65 0.70 0.69 0.71 0.65 0.81 0.86 0.86 ET3 / ET2 0.82 0.80 0.84 0.80 0.76 0.90 0.83 0.90 0.82 SAG51 / (SAG41+SAG42) 0.58 0.66 0.69 0.65 0.63 0.62 0.89 0.83 0.82 DT32 / DT41 0.75 0.77 0.78 0.79 0.80 0.76 0.79 0.77 0.79 CT5 / ET5 1.02 0.97 0.99 0.98 1.00 0.87 0.86 0.83 0.84 f / R9 -1.38 -1.34 -1.38 -1.39 -1.41 -1.19 -0.58 -0.56 -0.56 ET4 / T34 1.12 1.02 1.03 1.11 1.13 1.13 0.63 0.67 0.69 (R7-R8) / (R7+R8) 0.86 0.87 0.88 0.88 0.84 0.90 0.66 0.67 0.66 CT4 / ΣAT 0.84 0.78 0.77 0.85 0.83 0.86 0.43 0.49 0.50

[0169] Table 19

[0170] The present application also provides an imaging device, which is provided with an electronic photosensitive element for imaging, and the electronic photosensitive element can be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS). The imaging device can be an independent imaging device such as a digital camera, or a camera module integrated in a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens described above.

[0171] 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 protection 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 concept of the present application. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) to form a technical solution.

Claims

1. An optical imaging lens, characterized in that: Along the optical axis from the object side to the image side, they include: The first lens has positive power, its object side surface is convex and its image side surface is concave; a second lens having negative optical power; a third lens having negative optical power; a fourth lens element having positive refractive power, whose object-side surface is concave and whose image-side surface is convex; and a fifth lens having negative optical power, whose object-side surface is concave and whose image-side surface is concave; Wherein, the number of lenses having optical power of the optical imaging lens is five; The axial distance TTL from the object side of the first lens to the imaging surface of the optical imaging lens and half of the diagonal length of the effective pixel area on the imaging surface ImgH satisfy: 1.15≤TTL / ImgH<1.2; The curvature radius R1 of the object side surface of the first lens and the curvature radius R10 of the image side surface of the fifth lens satisfy: 0.7<R1 / R10≤0.88; The total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy: 2.24≤f / EPD≤2.25; The total effective focal length f of the optical imaging lens and the curvature radius R9 of the object side surface of the fifth lens satisfy: -1.41≤f / R9≤-1.19; 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: 0.84≤(R7-R8) / (R7+R8)≤0.90; The total effective focal length f of the optical imaging lens, the effective focal length f4 of the fourth lens and the effective focal length f5 of the fifth lens satisfy: 0.87≤f / (f4-f5)≤0.

94.

2. The optical imaging lens according to claim 1, wherein: A combined focal length f12 of the first lens and the second lens and a combined focal length f34 of the third lens and the fourth lens satisfy: 0.65≤f34 / f12≤0.

71.

3. The optical imaging lens according to claim 1, wherein: The edge thickness ET2 of the second lens and the edge thickness ET3 of the third lens satisfy: 0.76≤ET3 / ET2≤0.

90.

4. The optical imaging lens according to claim 1, wherein: An axial 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, an axial 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, and an axial distance SAG51 between the intersection of the object side surface of the fifth lens and the optical axis to the effective radius vertex of the object side surface of the fifth lens satisfy: 0.58≤SAG51 / (SAG41+SAG42)≤0.

69.

5. The optical imaging lens according to claim 1, wherein: The maximum effective radius DT32 of the image-side surface of the third lens and the maximum effective radius DT41 of the object-side surface of the fourth lens satisfy: 0.75≤DT32 / DT41≤0.

80.

6. The optical imaging lens according to claim 1, wherein: A center thickness CT5 of the fifth lens on the optical axis and an edge thickness ET5 of the fifth lens satisfy: 0.87≤CT5 / ET5≤1.

02.

7. 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 and an edge thickness ET4 of the fourth lens satisfy: 1.02≤ET4 / T34≤1.

13.

8. The optical imaging lens according to claim 1, wherein: A sum of a center thickness CT4 of the fourth lens on the optical axis and an air interval ΣAT between any two adjacent lenses of the first to fifth lenses on the optical axis satisfies: 0.77≤CT4 / ΣAT≤0.86.

Images