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 with optical power, whose image side surface is convex; a second lens with negative optical power; a third lens with negative optical power, whose object side surface is convex and whose image side surface is concave; a fourth lens with optical power, whose object side surface is convex; and a fifth lens with optical power, whose object side surface is convex. The total effective focal length f of the optical imaging lens and the half of the diagonal length of the effective pixel area on the imaging plane of the optical imaging lens ImgH satisfy: ImgH / f>0.8; and the center thickness CT2 of the second lens on the optical axis and the maximum value CTmax of the center thickness of the first lens to the fifth lens on the optical axis satisfy: 0<CT2 / CTmax<0.4.

Description

Technical Field

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

[0002] Nowadays, with the improvement of people's living standards, people like to take photos to record their daily life when they are on business trips or traveling. However, carrying a heavy camera on a business trip or traveling will make the business trip more tiring and heavy, making the originally relaxing journey become cumbersome and heavy.

[0003] Nowadays, the concept of light travel has been deeply rooted in people's minds, and the smartphones with gradually improved camera capabilities can just meet people's needs. How to make the optical imaging lens mounted on the smartphone miniaturized while maintaining good image quality is one of the problems that many lens designers are currently facing. Summary of the invention

[0004] The present application provides such 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 convex; a second lens with negative optical power; a third lens with negative optical power, whose object side surface is convex and whose image side surface is concave; a fourth lens with optical power, whose object side surface is convex; and a fifth lens with optical power, whose object side surface is convex. The total effective focal length f of the optical imaging lens and the half of the diagonal length of the effective pixel area on the imaging plane of the optical imaging lens ImgH can satisfy: ImgH / f>0.8; and the center thickness CT2 of the second lens on the optical axis and the maximum value CTmax of the center thickness of the first lens to the fifth lens on the optical axis can satisfy: 0<CT2 / CTmax<0.4.

[0005] In one embodiment, there is at least one aspherical mirror surface from the object side surface of the first lens to the image side surface of the fifth lens.

[0006] In one embodiment, the total effective focal length f of the optical imaging lens and the curvature radius R2 of the image-side surface of the first lens may satisfy: -0.4<f / R2<0.

[0007] In one embodiment, a curvature radius R9 of the object-side surface of the fifth lens and a curvature radius R10 of the image-side surface of the fifth lens may satisfy: 0<R10 / R9<1.

[0008] In one embodiment, a curvature radius R5 of the object-side surface of the third lens and a curvature radius R6 of the image-side surface of the third lens may satisfy: 0<R6 / R5<0.6.

[0009] In one embodiment, a center thickness CT3 of the third lens on the optical axis and a spacing distance T23 between the second lens and the third lens on the optical axis may satisfy: 0.5<T23 / CT3≤0.97.

[0010] In one embodiment, a distance SAG41 from 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 on the optical axis and an effective radius DT41 of the object side surface of the fourth lens may satisfy: -1.6<10×SAG41 / DT41≤-0.06.

[0011] In one embodiment, an effective radius DT31 of the object-side surface of the third lens and an effective radius DT22 of the image-side surface of the second lens may satisfy: DT22 / DT31≤0.89.

[0012] In one embodiment, an effective radius DT11 of the object-side surface of the first lens and an effective radius DT21 of the object-side surface of the second lens may satisfy: 1.1≤DT21 / DT11<1.3.

[0013] In one embodiment, the total effective focal length f of the optical imaging lens, the effective focal length f2 of the second lens, and the effective focal length f3 of the third lens may satisfy: -0.4<f / (f2+f3)<0.

[0014] In one embodiment, half of the maximum field of view Semi-FOV of the optical imaging lens may satisfy: tan(Semi-FOV)≥0.82.

[0015] In one embodiment, the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens may satisfy: 2<f / EPD<3.

[0016] On the other hand, the present application provides an optical imaging lens. The optical imaging lens 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 convex; a second lens with negative optical power; a third lens with negative optical power, whose object side surface is convex and whose image side surface is concave; a fourth lens with optical power, whose object side surface is convex; and a fifth lens with optical power, whose object side surface is convex. Semi-FOV, half of the maximum field of view angle of the optical imaging lens, can satisfy: tan(Semi-FOV)≥0.82.

[0017] In one embodiment, the total effective focal length f of the optical imaging lens and the curvature radius R2 of the image-side surface of the first lens may satisfy: -0.4<f / R2<0.

[0018] In one embodiment, a curvature radius R9 of the object-side surface of the fifth lens and a curvature radius R10 of the image-side surface of the fifth lens may satisfy: 0<R10 / R9<1.

[0019] In one embodiment, a curvature radius R5 of the object-side surface of the third lens and a curvature radius R6 of the image-side surface of the third lens may satisfy: 0<R6 / R5<0.6.

[0020] In one embodiment, a center thickness CT3 of the third lens on the optical axis and a spacing distance T23 between the second lens and the third lens on the optical axis may satisfy: 0.5<T23 / CT3≤0.97.

[0021] In one embodiment, a distance SAG41 from 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 on the optical axis and an effective radius DT41 of the object side surface of the fourth lens may satisfy: -1.6<10×SAG41 / DT41≤-0.06.

[0022] In one embodiment, an effective radius DT31 of the object-side surface of the third lens and an effective radius DT22 of the image-side surface of the second lens may satisfy: DT22 / DT31≤0.89.

[0023] In one embodiment, an effective radius DT11 of the object-side surface of the first lens and an effective radius DT21 of the object-side surface of the second lens may satisfy: 1.1≤DT21 / DT11<1.3.

[0024] In one embodiment, the total effective focal length f of the optical imaging lens, the effective focal length f2 of the second lens, and the effective focal length f3 of the third lens may satisfy: -0.4<f / (f2+f3)<0.

[0025] In one embodiment, the total effective focal length f of the optical imaging lens and half of the diagonal length ImgH of the effective pixel area on the imaging plane of the optical imaging lens may satisfy: ImgH / f>0.8.

[0026] In one embodiment, the center thickness CT2 of the second lens on the optical axis and the maximum value CTmax of the center thicknesses of the first to fifth lenses on the optical axis may satisfy: 0<CT2 / CTmax<0.4.

[0027] In one embodiment, the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens may satisfy: 2<f / EPD<3.

[0028] The present application adopts multiple (for example, five) lenses, and through the reasonable allocation of 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 of miniaturization, ultra-small head, high imaging quality, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0030] Figure 1 A schematic structural diagram of an optical imaging lens according to Embodiment 1 of the present application is shown;

[0031] 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;

[0032] Figure 3 A schematic structural diagram of an optical imaging lens according to Embodiment 2 of the present application is shown;

[0033] 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;

[0034] Figure 5 A schematic structural diagram of an optical imaging lens according to Embodiment 3 of the present application is shown;

[0035] 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;

[0036] Figure 7 A schematic structural diagram of an optical imaging lens according to Embodiment 4 of the present application is shown;

[0037] 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;

[0038] Fig. 9 A schematic structural diagram of an optical imaging lens according to Embodiment 5 of the present application is shown;

[0039] 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;

[0040] Fig.11 A schematic structural diagram of an optical imaging lens according to Embodiment 6 of the present application is shown; and

[0041] 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. DETAILED DESCRIPTION

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0049] The features, principles and other aspects of the present application are described in detail below.

[0050] The optical imaging lens according to the exemplary embodiment of the present application may include 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. Any two adjacent lenses from the first lens to the fifth lens may have a spacing distance between them.

[0051] In an exemplary embodiment, the first lens may have positive or negative optical power, and its image side surface may be convex; the second lens may have negative optical power; the third lens may have negative optical power, its object side surface may be convex, and the image side surface may be concave; the fourth lens may have positive or negative optical power, and its object side surface may be convex; and the fifth lens may have positive or negative optical power, and its object side surface may be convex.

[0052] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: ImgH / f>0.8, where f is the total effective focal length of the optical imaging lens, and ImgH is half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens. Satisfying ImgH / f>0.8 is conducive to achieving high-quality imaging and improving the resolution of the lens.

[0053] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0<CT2 / CTmax<0.4, wherein CT2 is the center thickness of the second lens on the optical axis, and CTmax is the maximum value of the center thickness of the first lens to the fifth lens on the optical axis. More specifically, CT2 and CTmax may further satisfy: 0.2<CT2 / CTmax<0.3. Satisfying 0<CT2 / CTmax<0.4 can make the lens easy to injection mold, improve the processability of the imaging lens, and also facilitate achieving better imaging quality.

[0054] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: -0.4<f / R2<0, where f is the total effective focal length of the optical imaging lens, and R2 is the radius of curvature of the image side surface of the first lens. More specifically, f and R2 may further satisfy: -0.3<f / R2<0. Satisfying -0.4<f / R2<0 is conducive to better matching the optical imaging lens with the chip.

[0055] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0<R10 / R9<1, wherein R9 is the radius of curvature of the object side surface of the fifth lens, and R10 is the radius of curvature of the image side surface of the fifth lens. More specifically, R10 and R9 may further satisfy: 0.1<R10 / R9<0.9. Satisfying 0<R10 / R9<1 is conducive to reducing the sensitivity of the lens, achieving a large field of view and high resolution characteristics, and ensuring good processability.

[0056] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0<R6 / R5<0.6, wherein R5 is the radius of curvature of the object side surface of the third lens, and R6 is the radius of curvature of the image side surface of the third lens. More specifically, R6 and R5 may further satisfy: 0.2<R6 / R5<0.5. Satisfying 0<R6 / R5<0.6 is conducive to reasonably allocating the optical power of the third lens, and is also conducive to reducing the angle between the main light and the optical axis when it is incident on the image plane, thereby improving the illumination of the image plane.

[0057] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.5<T23 / CT3≤0.97, wherein CT3 is the center thickness of the third lens on the optical axis, and T23 is the spacing distance between the second lens and the third lens on the optical axis. Satisfying 0.5<T23 / CT3≤0.97 is conducive to improving the stability of lens assembly and the consistency of mass production, and is conducive to improving the production yield of the optical imaging lens.

[0058] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: -1.6<10×SAG41 / DT41≤-0.06, wherein SAG41 is the distance from the intersection of the object side surface of the fourth lens and the optical axis to the vertex of the effective radius of the object side surface of the fourth lens on the optical axis, and DT41 is the effective radius of the object side surface of the fourth lens. More specifically, SAG41 and DT41 may further satisfy: -1.5<10×SAG41 / DT41≤-0.06. Satisfying -1.6<10×SAG41 / DT41≤-0.06 can avoid excessive bending of the fourth lens, reduce processing difficulty, and enable the optical imaging lens to have a better ability to balance chromatic aberration and distortion.

[0059] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: DT22 / DT31≤0.89, where DT31 is the effective radius of the object side of the third lens, and DT22 is the effective radius of the image side of the second lens. Satisfying DT22 / DT31≤0.89 is conducive to reducing the size of the lens, meeting the miniaturization of the lens, and improving the resolution.

[0060] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1.1≤DT21 / DT11<1.3, wherein DT11 is the effective radius of the object side of the first lens, and DT21 is the effective radius of the object side of the second lens. More specifically, DT21 and DT11 may further satisfy: 1.1≤DT21 / DT11<1.2. Satisfying 1.1≤DT21 / DT11<1.3 can improve the ability of the optical imaging lens to correct off-axis aberrations, so that the lens can obtain higher image quality.

[0061] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: -0.4<f / (f2+f3)<0, where f is the total effective focal length of the optical imaging lens, f2 is the effective focal length of the second lens, and f3 is the effective focal length of the third lens. More specifically, f, f2, and f3 may further satisfy: -0.3<f / (f2+f3)<0. Satisfying -0.4<f / (f2+f3)<0 is conducive to improving the field of view of the lens.

[0062] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: tan(Semi-FOV)≥0.82, where Semi-FOV is half of the maximum field of view of the optical imaging lens. Satisfying tan(Semi-FOV≥0.82 can make the field of view of the lens wide and can make the lens have a considerable clear imaging range.

[0063] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 2<f / EPD<3, where f is the total effective focal length of the optical imaging lens, and EPD is the entrance pupil diameter of the optical imaging lens. More specifically, f and EPD may further satisfy: 2.2<f / EPD<2.7. Satisfying 2<f / EPD<3 can make the lens have a large aperture, so that the lens has good imaging quality even in a dark environment.

[0064] 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 optical power, surface shape, center thickness of each lens, and axial spacing between lenses, the volume of the optical imaging lens can be effectively reduced and the processability of the optical imaging lens can be improved, making the optical imaging lens more conducive to production and processing and applicable to portable electronic products. The optical imaging lens configured as above has the characteristics of ultra-small head, miniaturization, good imaging quality, etc., which can well meet the use requirements of various portable electronic products in camera scenes.

[0065] 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 mirror surfaces from the object side of the first lens to the image side 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 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.

[0066] 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.

[0067] Specific embodiments of the optical imaging lens applicable to the above-mentioned embodiments are further described below with reference to the accompanying drawings.

[0068] Example 1

[0069] 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.

[0070] like Figure 1 As shown, the optical imaging lens includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6 and an imaging surface S13.

[0071] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is convex. 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 convex, and its image side surface S8 is convex. The fifth lens E5 has negative focal power, and its object side surface S9 is convex, 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 S1 to S12 in sequence and is finally imaged on the imaging surface S13.

[0072] 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).

[0073]

[0074] Table 1

[0075] In this example, the total effective focal length f of the optical imaging lens is 3.20 mm, the total length TTL of the optical imaging lens (i.e., the distance from the object-side surface S1 of the first lens E1 to the imaging surface S13 of the optical imaging lens on the optical axis) is 3.92 mm, half of the diagonal length of the effective pixel area on the imaging surface S13 of the optical imaging lens ImgH is 2.88 mm, half of the maximum field of view Semi-FOV of the optical imaging lens is 41.15°, and the aperture value Fno of the optical imaging lens is 2.31.

[0076] 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:

[0077]

[0078] 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. The following Tables 2-1 and 2-2 give the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A56, A57, A58, A59, A60, A61, A71, A72, A73, A74, A75 10 , A 12 , A 14 , A 16 , A 18 , A 20 , A 22 , A 24 , A26 , A 28 , A 30 、.

[0079]

[0080]

[0081] Table 2-1

[0082] Face number A18 A20 A22 A24 A26 A28 A30 S1 9.8886E-07 -1.0110E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 -4.4274E-06 2.0384E-06 6.4909E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 -6.8508E-06 3.4337E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 -7.2940E-06 2.4016E-07 -1.1833E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 -2.3808E-05 6.0773E-06 8.2622E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 -7.0284E-05 6.4925E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S7 4.0992E-04 -1.0648E-04 -1.5106E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S8 -9.8873E-04 3.4495E-04 -5.8685E-05 -1.9922E-05 0.0000E+00 0.0000E+00 0.0000E+00 S9 -1.7340E-03 6.3531E-04 1.7653E-04 5.7155E-05 -9.1751E-05 0.0000E+00 0.0000E+00 S10 2.1532E-03 5.7240E-04 8.9241E-04 -7.4204E-05 1.7204E-04 -7.0870E-05 -4.5991E-05

[0083] Table 2-2

[0084] 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 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 lens. FIG. 2A to FIG. 2D It can be seen that the optical imaging lens provided in Example 1 can achieve good imaging quality.

[0085] Example 2

[0086] 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.

[0087] like Figure 3 As shown, the optical imaging lens includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6 and an imaging surface S13.

[0088] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is convex. 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 convex, and its image side surface S8 is concave. The fifth lens E5 has positive focal power, and its object side surface S9 is convex, 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 S1 to S12 in sequence and is finally imaged on the imaging surface S13.

[0089] In this example, the total effective focal length f of the optical imaging lens is 3.23 mm, the total length TTL of the optical imaging lens is 4.04 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S13 of the optical imaging lens is 2.88 mm, half of the maximum field of view Semi-FOV of the optical imaging lens is 40.58°, and the aperture value Fno of the optical imaging lens is 2.31.

[0090] 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). Tables 4-1 and 4-2 show 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.

[0091]

[0092] Table 3

[0093] Face number A4 A6 A8 A10 A12 A14 A16 S1 -1.1821E-02 -8.5593E-04 -2.4257E-04 2.6947E-05 -3.9235E-05 1.8616E-05 -9.0706E-06 S2 -5.9649E-02 9.4725E-04 -3.5822E-04 -1.8224E-04 1.5664E-06 -9.3489E-06 1.2586E-05 S3 -8.2483E-03 5.1181E-03 -5.6893E-04 -2.9393E-04 2.1654E-05 -1.3196E-05 4.6000E-06 S4 5.2016E-02 6.1788E-03 1.1962E-04 -8.5843E-05 2.1273E-05 -1.6748E-05 -2.5707E-06 S5 -1.1533E-01 -1.3466E-03 -2.8576E-03 1.0274E-05 -3.4899E-04 2.0139E-05 -1.2387E-04 S6 -4.2404E-01 6.0154E-02 -6.3497E-03 4.9163E-03 -4.1491E-03 4.9586E-04 -9.7933E-04 S7 -9.6124E-01 9.1885E-02 2.0545E-02 1.7407E-02 -1.7635E-02 1.9819E-03 -9.5372E-04 S8 -1.5338E+00 2.2924E-01 -8.0030E-02 3.9430E-02 -3.4720E-02 2.0440E-02 -7.1058E-03 S9 -2.6699E+00 8.3859E-01 -3.1403E-01 1.1000E-01 -4.5803E-02 2.0451E-02 -8.4794E-03 S10 -3.3988E+00 6.7074E-01 -1.8112E-01 8.2016E-02 -2.8853E-02 4.1839E-03 -9.9235E-03

[0094] Table 4-1

[0095]

[0096]

[0097] Table 4-2

[0098] 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 distortion curve of the optical imaging lens of Example 2 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 4DThe 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. 4A to 4D It can be seen that the optical imaging lens provided in Example 2 can achieve good imaging quality.

[0099] Example 3

[0100] 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.

[0101] like Figure 5 As shown, the optical imaging lens includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6 and an imaging surface S13.

[0102] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is convex. 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 negative focal power, and its object side surface S7 is convex, and its image side surface S8 is concave. The fifth lens E5 has negative focal power, and its object side surface S9 is convex, 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 S1 to S12 in sequence and is finally imaged on the imaging surface S13.

[0103] In this example, the total effective focal length f of the optical imaging lens is 3.22 mm, the total length TTL of the optical imaging lens is 4.00 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S13 of the optical imaging lens is 2.88 mm, half of the maximum field of view Semi-FOV of the optical imaging lens is 40.42°, and the aperture value Fno of the optical imaging lens is 2.31.

[0104] 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). Tables 6-1 and 6-2 show 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.

[0105]

[0106]

[0107] Table 5

[0108] Face number A4 A6 A8 A10 A12 A14 A16 S1 -1.2530E-02 -7.2191E-04 -2.9009E-04 5.4432E-05 -5.6333E-05 2.9369E-05 -1.4814E-05 S2 -5.8194E-02 8.1880E-04 -3.2523E-04 -1.9546E-04 4.0119E-05 -4.4415E-05 3.6880E-05 S3 -1.0637E-02 5.7521E-03 -9.2023E-04 -1.7436E-04 -8.5235E-06 -2.3915E-05 1.9766E-05 S4 5.1970E-02 6.6524E-03 3.9750E-05 -8.5750E-05 5.0477E-05 -5.8532E-05 2.4240E-05 S5 -8.8086E-02 -1.0425E-02 3.5973E-04 -1.5707E-03 4.3275E-04 -3.7126E-04 3.4841E-05 S6 -2.2597E-01 3.9141E-03 1.5598E-02 -5.2501E-03 1.2267E-03 -2.2901E-03 4.8317E-04 S7 -5.5205E-01 -2.2516E-02 6.5297E-02 -3.7819E-03 -6.4184E-03 -3.9174E-03 2.0068E-03 S8 -1.0099E+00 1.3696E-01 -3.8463E-02 2.0840E-02 -2.5512E-02 1.4867E-02 -4.3640E-03 S9 -3.0475E+00 9.6547E-01 -3.7110E-01 1.3796E-01 -6.0953E-02 3.0265E-02 -1.4757E-02 S10 -4.7624E+00 1.0405E+00 -3.3364E-01 1.5523E-01 -7.1494E-02 3.2247E-02 -2.6758E-02

[0109] Table 6-1

[0110] Face number A18 A20 A22 A24 A26 A28 A30 S1 1.3794E-05 -5.8426E-06 9.6493E-06 -8.7592E-06 -1.0682E-06 -6.5247E-06 5.7214E-06 S2 -2.0840E-05 1.6847E-05 -3.6490E-06 7.1122E-07 -6.2841E-06 1.8206E-06 -1.5816E-06 S3 -1.1098E-05 -2.4981E-06 3.5262E-06 -3.3563E-06 1.5930E-06 -2.9247E-06 2.1675E-06 S4 -7.5678E-06 -7.1920E-07 4.5265E-06 -1.3704E-06 1.0504E-06 -1.2957E-06 -5.0239E-07 S5 -3.0419E-05 -8.6626E-06 1.2559E-05 -7.0287E-06 6.7623E-06 1.6161E-06 6.0295E-06 S6 -1.1642E-04 1.6475E-04 4.5043E-05 -5.6422E-06 -1.2281E-06 -1.5052E-05 -9.6253E-06 S7 5.8639E-04 -2.7738E-04 -7.3206E-05 -5.3073E-05 9.8541E-05 -9.5105E-06 -3.8870E-05 S8 3.0637E-03 -2.4985E-03 1.1911E-03 -1.1064E-03 3.6236E-04 -3.8176E-04 3.6989E-05 S9 7.9416E-03 -4.0587E-03 2.6268E-03 -1.2391E-03 4.2449E-04 -1.8040E-04 -3.9098E-06 S10 1.1470E-02 -3.5818E-03 3.3734E-03 -1.4686E-03 1.4400E-03 -9.7891E-04 4.4561E-04

[0111] Table 6-2

[0112] Fig. 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 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 lens. FIG. 6A to FIG. 6D It can be seen that the optical imaging lens provided in Example 3 can achieve good imaging quality.

[0113] Example 4

[0114] 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.

[0115] like Figure 7 As shown, the optical imaging lens includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6 and an imaging surface S13.

[0116] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is convex. 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 convex, and its image side surface S8 is convex. The fifth lens E5 has negative focal power, and its object side surface S9 is convex, 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 S1 to S12 in sequence and is finally imaged on the imaging surface S13.

[0117] In this example, the total effective focal length f of the optical imaging lens is 3.19 mm, the total length TTL of the optical imaging lens is 3.87 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S13 of the optical imaging lens is 2.72 mm, half of the maximum field of view Semi-FOV of the optical imaging lens is 39.32°, and the aperture value Fno of the optical imaging lens is 2.60.

[0118] 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). Tables 8-1 and 8-2 show the high-order coefficients of each aspherical mirror surface that can be used in Example 4, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0119]

[0120] Table 7

[0121]

[0122]

[0123] Table 8-1

[0124] Face number A18 A20 A22 A24 A26 A28 A30 S1 -1.2136E-05 -5.8160E-07 1.8980E-06 1.1668E-06 2.9938E-07 -7.2538E-07 1.5873E-07 S2 -4.2781E-05 3.1089E-05 -2.2818E-05 1.9836E-05 -1.0925E-05 2.8227E-06 -2.5897E-07 S3 -6.9400E-06 1.6944E-05 -4.8261E-06 4.3371E-06 6.8065E-06 -1.0810E-05 3.7202E-06 S4 -5.6959E-06 -3.3881E-06 1.1359E-05 -1.3548E-05 2.2701E-06 -7.7439E-06 5.7076E-06 S5 -1.0843E-04 3.8383E-05 -3.8856E-05 2.6121E-05 -8.8517E-06 5.7500E-06 -1.7850E-06 S6 -3.2381E-05 -1.2802E-05 1.1068E-05 -1.0936E-05 1.4190E-05 -6.5645E-06 9.9433E-07 S7 1.2561E-04 -1.6534E-05 6.4939E-05 -6.2635E-05 3.0644E-05 -8.4844E-06 9.8942E-07 S8 -8.5123E-04 1.8426E-04 3.2826E-05 -8.8569E-05 5.0618E-05 -9.3853E-06 2.9583E-07 S9 7.6278E-05 -1.3682E-04 1.3635E-04 -1.7283E-04 9.5582E-05 -2.2888E-05 1.9632E-06 S10 5.1311E-04 -5.2419E-04 4.5120E-04 -3.9833E-04 3.0898E-04 -1.0207E-04 9.9230E-06

[0125] Table 8-2

[0126] Fig. 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 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 lens. FIG. 8A to FIG. 8D It can be seen that the optical imaging lens provided in Example 4 can achieve good imaging quality.

[0127] Example 5

[0128] 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.

[0129] like Fig. 9As shown, the optical imaging lens includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6 and an imaging surface S13.

[0130] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is convex. 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 convex, and its image side surface S8 is convex. The fifth lens E5 has negative focal power, and its object side surface S9 is convex, 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 S1 to S12 in sequence and is finally imaged on the imaging surface S13.

[0131] In this example, the total effective focal length f of the optical imaging lens is 3.22 mm, the total length TTL of the optical imaging lens is 3.85 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S13 of the optical imaging lens is 2.72 mm, half of the maximum field of view Semi-FOV of the optical imaging lens is 39.39°, and the aperture value Fno of the optical imaging lens is 2.60.

[0132] 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). Tables 10-1 and 10-2 show 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.

[0133]

[0134] Table 9

[0135] Face number A4 A6 A8 A10 A12 A14 A16 S1 -7.4106E-03 -9.1559E-04 8.9430E-05 -9.6731E-05 1.8019E-05 1.0265E-05 8.7367E-06 S2 -7.4106E-03 -9.1559E-04 8.9430E-05 -9.6731E-05 1.8019E-05 1.0265E-05 8.7367E-06 S3 -1.2567E-03 3.4686E-03 -1.0522E-04 -1.6596E-04 1.1281E-04 -5.0402E-05 -2.4206E-07 S4 4.5857E-02 4.6697E-03 -5.2203E-05 1.6584E-04 -5.4567E-05 4.1578E-05 -2.9060E-05 S5 -9.2684E-02 -1.8564E-03 -6.2489E-04 -3.9863E-04 4.2133E-04 -2.6872E-04 1.6239E-04 S6 -2.9929E-01 2.8245E-02 -2.8261E-03 2.2545E-03 -9.0378E-05 -1.8587E-04 2.4385E-05 S7 -6.3782E-01 -4.7760E-02 1.5225E-02 7.7031E-03 -1.8886E-03 -2.0454E-03 1.0569E-05 S8 2.0067E-01 -1.3905E-01 6.9219E-02 -2.6794E-02 1.1210E-03 -3.4695E-05 1.7411E-03 S9 -1.1608E+00 3.7885E-01 -1.2973E-01 3.1732E-02 -6.2284E-03 -3.4351E-03 1.3707E-03 S10 -3.1887E+00 5.9429E-01 -1.8437E-01 5.4023E-02 -1.5425E-02 4.2896E-03 -7.1519E-03

[0136] Table 10-1

[0137]

[0138]

[0139] Table 10-2

[0140] Fig. 10A The axial chromatic aberration curve of the optical imaging lens of Example 5 is shown, which indicates the deviation of light of different wavelengths from the focal point behind the lens. 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 lens. FIG. 10A to FIG. 10D It can be seen that the optical imaging lens provided in Example 5 can achieve good imaging quality.

[0141] Example 6

[0142] 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.

[0143] like Fig.11 As shown, the optical imaging lens includes, from the object side to the image side, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6 and an imaging surface S13.

[0144] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is convex. 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 negative focal power, and its object side surface S7 is convex, and its image side surface S8 is concave. The fifth lens E5 has positive focal power, and its object side surface S9 is convex, 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 S1 to S12 in sequence and is finally imaged on the imaging surface S13.

[0145] In this example, the total effective focal length f of the optical imaging lens is 3.33 mm, the total length TTL of the optical imaging lens is 4.11 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S13 of the optical imaging lens is 2.88 mm, half of the maximum field of view Semi-FOV of the optical imaging lens is 39.64°, and the aperture value Fno of the optical imaging lens is 2.31.

[0146] 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). Tables 12-1 and 12-2 show 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.

[0147]

[0148]

[0149] Table 11

[0150] Face number A4 A6 A8 A10 A12 A14 A16 S1 -1.0710E-02 -8.3062E-04 -1.6568E-04 1.8859E-05 -2.3890E-05 9.4127E-06 -7.9823E-06 S2 -5.1457E-02 3.5787E-04 -1.3118E-04 -1.0087E-04 3.9087E-06 -2.8500E-06 2.4605E-06 S3 -4.7091E-03 4.6572E-03 -2.6961E-04 -1.6966E-04 -2.7934E-06 5.5082E-06 -8.8239E-06 S4 4.7642E-02 6.5550E-03 2.7607E-04 4.5102E-05 -1.9737E-05 5.4166E-06 -9.8466E-06 S5 -1.1509E-01 -2.0524E-03 -2.2145E-03 3.1418E-05 -2.9943E-04 -5.3005E-05 -6.9114E-05 S6 -3.1166E-01 3.7903E-02 2.1800E-04 2.9881E-03 -2.2908E-03 -2.1115E-04 -3.9897E-04 S7 -7.2954E-01 3.7706E-02 2.6019E-02 1.5724E-02 -1.1121E-02 -1.2051E-03 -7.7709E-05 S8 -1.4621E+00 2.4177E-01 -8.5663E-02 3.9809E-02 -3.0774E-02 1.5415E-02 -4.6240E-03 S9 -2.8399E+00 8.6804E-01 -3.1185E-01 1.0309E-01 -3.8702E-02 1.6400E-02 -8.4782E-03 S10 -3.7678E+00 6.8562E-01 -1.8482E-01 9.1286E-02 -3.3817E-02 1.1296E-02 -1.4121E-02

[0151] Table 12-1

[0152] Face number A18 A20 A22 A24 A26 A28 A30 S1 3.1544E-06 -3.9507E-06 4.8449E-06 -1.4607E-07 2.0651E-06 -3.4480E-06 1.0525E-06 S2 8.6689E-07 2.2923E-06 7.9291E-07 6.5391E-07 -1.2263E-06 1.0864E-07 -4.4067E-07 S3 -1.7855E-06 -5.0256E-06 -1.6063E-06 -1.1412E-06 7.3642E-07 -3.0065E-07 1.3298E-06 S4 -2.0655E-06 -2.5676E-06 1.6637E-07 -6.3500E-07 1.8403E-07 -4.2800E-07 -1.8066E-07 S5 -1.1179E-05 -9.4434E-06 3.2830E-06 2.2783E-06 2.3740E-06 3.0603E-06 1.0525E-06 S6 1.2448E-04 6.2889E-06 7.5702E-05 1.1123E-05 8.6549E-06 -3.0210E-06 -6.7967E-06 S7 1.1219E-03 -3.3367E-04 -9.6262E-06 -1.1044E-05 6.4064E-05 1.2402E-05 -2.7648E-05 S8 3.8620E-03 -2.1833E-03 1.2726E-03 -3.5146E-04 1.9538E-04 -1.8712E-04 -7.2453E-05 S9 5.3179E-03 -3.3374E-03 2.2855E-03 -8.2810E-04 -1.1622E-05 1.9579E-04 -8.1632E-05 S10 2.6798E-03 -1.6595E-03 1.5223E-03 -4.7592E-05 4.8170E-04 4.8262E-05 7.3448E-05

[0153] Table 12-2

[0154] Fig. 12A The axial chromatic aberration curve of the optical imaging lens of Example 6 is shown, which indicates the deviation of light of different wavelengths from the focal point behind the lens. 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 lens. FIG. 12A to FIG. 12D It can be seen that the optical imaging lens provided in Example 6 can achieve good imaging quality.

[0155] In summary, Examples 1 to 6 respectively satisfy the relationships shown in Table 13.

[0156] Conditional / Example 1 2 3 4 5 6 ImgH / f 0.90 0.89 0.90 0.85 0.84 0.87 CT2 / CTmax 0.25 0.24 0.24 0.26 0.28 0.23 f / R2 -0.22 -0.18 -0.24 -0.16 -0.06 -0.19 f / (f2+f3) -0.22 -0.25 -0.09 -0.22 -0.23 -0.20 DT21 / DT11 1.10 1.10 1.10 1.17 1.14 1.12 DT22 / DT31 0.87 0.87 0.87 0.88 0.87 0.89 10×SAG41 / DT41 -1.17 -1.11 -1.39 -0.76 -0.06 -1.48 R10 / R9 0.14 0.88 0.70 0.23 0.36 0.88 R6 / R5 0.33 0.29 0.41 0.24 0.35 0.38 T23 / CT3 0.97 0.88 0.92 0.91 0.83 0.83 tan(Semi-FOV) 0.87 0.86 0.85 0.82 0.82 0.83

[0157] Table 13

[0158] The present application also provides an imaging device, whose electronic photosensitive element can be a photosensitive coupled device (CCD) or a complementary metal oxide semiconductor element (CMOS). The imaging device can be an independent imaging device such as a digital camera, or an imaging module integrated in a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens described above.

[0159] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. An optical imaging lens, characterized in that: Along the optical axis from the object side to the image side, they include: The first lens has positive refractive power, and its object-side surface is convex and its image-side surface is convex; A second lens having negative optical power, whose image side surface is concave; The third lens has a negative optical power, and its object side surface is convex and its image side surface is concave; a fourth lens element having positive or negative refractive power, the object side surface of which is convex; and a fifth lens having positive or negative power, whose object-side surface is convex and whose image-side surface is concave; The total effective focal length f of the optical imaging lens and the curvature radius R2 of the image side surface of the first lens satisfy: -0.24≤f / R2≤-0.06; The total effective focal length f of the optical imaging lens and half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens ImgH satisfy: 0.90≥ImgH / f>0.8; and The center thickness CT2 of the second lens on the optical axis and the maximum value CTmax of the center thicknesses of the first lens to the fifth lens on the optical axis satisfy: 0.2<CT2 / CTmax<0.3; The number of lenses having optical power in the optical imaging lens is five.

2. The optical imaging lens according to claim 1, wherein: A curvature radius R9 of the object-side surface of the fifth lens and a curvature radius R10 of the image-side surface of the fifth lens satisfy: 0.1<R10 / R9<0.

9.

3. The optical imaging lens according to claim 1, wherein: A curvature radius R5 of the object-side surface of the third lens and a curvature radius R6 of the image-side surface of the third lens satisfy: 0.2<R6 / R5≤0.

41.

4. The optical imaging lens according to claim 1, wherein: A center thickness CT3 of the third lens on the optical axis and a spacing distance T23 between the second lens and the third lens on the optical axis satisfy: 0.83≤T23 / CT3≤0.

97.

5. The optical imaging lens according to claim 1, wherein: A distance SAG41 from the intersection of the object side surface of the fourth lens and the optical axis to the vertex of the effective radius of the object side surface of the fourth lens on the optical axis and an effective radius DT41 of the object side surface of the fourth lens satisfy: -1.5<10×SAG41 / DT41≤-0.

06.

6. The optical imaging lens according to claim 1, wherein: An effective radius DT31 of the object-side surface of the third lens and an effective radius DT22 of the image-side surface of the second lens satisfy: 0.87≤DT22 / DT31≤0.

89.

7. The optical imaging lens according to claim 1, wherein: An effective radius DT11 of the object-side surface of the first lens and an effective radius DT21 of the object-side surface of the second lens satisfy: 1.1≤DT21 / DT11<1.

2.

8. The optical imaging lens according to claim 1, wherein: The total effective focal length f of the optical imaging lens, the effective focal length f2 of the second lens, and the effective focal length f3 of the third lens satisfy: -0.3<f / (f2+f3)≤-0.

09.

9. The optical imaging lens according to any one of claims 1 to 8, characterized in that: Half of the maximum field of view Semi-FOV of the optical imaging lens satisfies: 0.87≥tan(Semi-FOV)≥0.

82.

10. The optical imaging lens according to any one of claims 1 to 8, characterized in that: The total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy: 2.31≤f / EPD≤2.60.

Images