Optical imaging lens

Abstract

The present invention provides an optical imaging lens. The optical imaging lens comprises, from the object side to the imaging side, a first lens having positive optical power and a convex object side surface; a second lens having negative optical power and a concave imaging side surface; a third lens having optical power; a fourth lens having optical power; and a fifth lens having optical power. The effective focal length f1 of the first lens, the effective focal length f of the optical imaging lens, and the entrance pupil diameter EPD of the optical imaging lens satisfy the following relationship: 8.5 mm. 2 <(f1+f)*EPD / 10<10.5mm 2 The distance TTL from the object side of the first lens to the imaging surface on the optical axis, half the diagonal length of the effective pixel area on the imaging surface ImgH and the aperture number FNO of the optical imaging lens meet the following requirements: 7.5

Description

Technical Field

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

[0002] With the continuous development of the mobile phone industry, people have more diverse requirements for the camera function of mobile phones. With the pursuit of excellent imaging ability for distant scenes by the public, telephoto lenses have gradually become one of the popular optical imaging lenses applied to mobile phones. Currently, more and more intelligent device manufacturers are continuously upgrading and producing telephoto lenses with different focal lengths. The existing optical imaging lenses applied to mobile phones only having the characteristic of telephoto are not enough to meet the multi-functional requirements of users. At the same time, they also need to have the characteristic of a large aperture, so as to ensure that the optical imaging lens on the mobile phone has a sufficient amount of incident light and ensure the imaging quality.

[0003] That is to say, there is a problem that it is difficult to simultaneously take into account both telephoto and large aperture in the optical imaging lenses in the prior art. Summary of the Invention

[0004] The main object of the present invention is to provide an optical imaging lens to solve the problem that it is difficult to simultaneously take into account both telephoto and large aperture in the optical imaging lenses in the prior art.

[0005] To achieve the above object, according to one aspect of the present invention, there is provided an optical imaging lens, which sequentially includes from the object side to the imaging side: a first lens having a positive optical power and a convex object side; a second lens having a negative optical power and a concave imaging side; a third lens having an optical power; a fourth lens having an optical power; a fifth lens having an optical power; wherein, the effective focal length f1 of the first lens, the effective focal length f of the optical imaging lens, and the entrance pupil diameter EPD of the optical imaging lens satisfy: 8.5mm 2 <(f1 + f) * EPD / 10 < 10.5mm 2 ; the distance TTL on the optical axis from the object side of the first lens to the imaging surface, half of the diagonal length ImgH of the effective pixel area on the imaging surface, and the f-number FNO of the optical imaging lens satisfy: 7.5 < TTL / ImgH * FNO < 10; the central thickness CT1 of the first lens, the air gap T12 on the optical axis from the first lens to the second lens, the central thickness CT2 of the second lens, and the air gap T23 on the optical axis from the second lens to the third lens satisfy: 0.3 < (CT1 + T12) / (CT2 + T23) < 1.2.

[0006] Furthermore, the combined focal length f2345 of the second lens, the third lens, the fourth lens, and the fifth lens and the combined focal length f12 of the first lens and the second lens satisfy: 0<|f2345 / f12|<1.0.

[0007] Furthermore, the combined focal length f12 of the first lens and the second lens satisfies the following relationship with the effective focal length f1 of the first lens: 1.5 <f12 / f1<2.5。

[0008] Furthermore, the effective focal length f of the optical imaging lens and the combined focal length f2345 of the second lens, the third lens, the fourth lens, and the fifth lens satisfy the following relationship: 1.0<|f / f2345|<2.5.

[0009] Furthermore, the curvature radius R4 of the imaging side of the second lens, the curvature radius R6 of the imaging side of the third lens, and the curvature radius R7 of the object side of the fourth lens satisfy the following relationship: -0.6m -1 <R7 / (R6*R4)<0.6m -1 .

[0010] Furthermore, the curvature radius R1 of the object side surface of the first lens, the curvature radius R6 of the imaging side surface of the third lens, and the curvature radius R7 of the object side surface of the fourth lens satisfy: 0.5<|R1 / R6+|R1 / R7|<2.

[0011] Furthermore, the sum ΣCT of the center thickness of each lens from the first lens to the fifth lens and the distance BFL from the imaging side surface to the imaging plane on the optical axis of the fifth lens satisfy the following relationship: 1.0<ΣCT / BFL<1.7.

[0012] Furthermore, the center thickness CT1 of the first lens, the center thickness CT3 of the third lens, the center thickness CT4 of the fourth lens, the center thickness CT2 of the second lens and the center thickness CT5 of the fifth lens satisfy: 1.5<(CT1+CT3+CT4) / (CT2+CT5)<3.7.

[0013] Furthermore, the distance BFL from the imaging side surface of the fifth lens to the imaging plane on the optical axis, the sum of the air gaps ∑AT on the optical axis between adjacent lenses from the first lens to the fifth lens, and the edge thickness ET2 at the maximum effective radius of the second lens satisfy the following relationship: -0.2<(BFL-∑AT) / ET2<2.2.

[0014] Furthermore, the distance TD on the optical axis from the object side of the first lens to the imaging side of the fifth lens, the center thickness CT1 of the first lens and the center thickness CT5 of the fifth lens satisfy the following conditions: 2.5 <TD / (CT1+CT5)<4.2。

[0015] Furthermore, the maximum effective radius DT11 of the object side of the first lens, the maximum effective radius DT12 of the imaging side of the first lens, and the maximum effective radius DT51 of the object side of the fifth lens satisfy: 2.0<(DT11+DT12) / DT51<3.0.

[0016] Furthermore, the maximum effective radius DT22 of the imaging side surface of the second lens and the maximum effective radius DT32 of the imaging side surface of the third lens satisfy the following relationship: 1.8<|(DT22+DT32) / DT32|<2.5.

[0017] Furthermore, the on-axis distance SAG12 between the intersection of the imaging side surface of the first lens and the optical axis to the effective radius vertex of the imaging side surface of the first lens and the on-axis distance SAG21 between the intersection of the object side surface of the second lens and the optical axis to the effective radius vertex of the object side surface of the second lens satisfies: 0<|SAG12 / SAG21|<1.0.

[0018] Furthermore, the on-axis distance SAG31 between the intersection of the object side of the third lens and the optical axis to the effective radius vertex of the object side of the third lens, the on-axis distance SAG32 between the intersection of the imaging side of the third lens and the optical axis to the effective radius vertex of the imaging side of the third lens, and the on-axis distance SAG51 between the intersection of the object side of the fifth lens and the optical axis to the effective radius vertex of the object side of the fifth lens satisfy: -0.7<(SAG31-SAG32) / SAG51<0.6.

[0019] Furthermore, the center thickness CT1 of the first lens, the center thickness CT4 of the fourth lens, the edge thickness ET1 at the maximum effective radius of the first lens, and the edge thickness ET4 at the maximum effective radius of the fourth lens satisfy: 0<(ET1+ET4) / (CT1+CT4)<0.8.

[0020] According to another aspect of the present invention, an optical imaging lens is provided, comprising, from the object side to the imaging side, a first lens element having positive optical power and a convex object-side surface; a second lens element having negative optical power and a concave imaging-side surface; a third lens element having optical power; a fourth lens element having optical power; and a fifth lens element having optical power; wherein the effective focal length f1 of the first lens element, the effective focal length f of the optical imaging lens, and the entrance pupil diameter EPD of the optical imaging lens satisfy the following relationship: 8.5 mm. 2 <(f1+f)*EPD / 10<10.5mm 2; The distance TTL from the object side of the first lens to the imaging surface on the optical axis, half of the diagonal length ImgH of the effective pixel region on the imaging surface, and the f-number FNO of the optical imaging lens satisfy: 7.5 < TTL / ImgH * FNO < 10; The central thickness CT1 of the first lens, the central thickness CT3 of the third lens, the central thickness CT4 of the fourth lens, the central thickness CT2 of the second lens, and the central thickness CT5 of the fifth lens satisfy: 1.5 < (CT1 + CT3 + CT4) / (CT2 + CT5) < 3.7.

[0021] Further, the central thickness CT1 of the first lens, the air gap T12 between the first lens and the second lens on the optical axis, the central thickness CT2 of the second lens, and the air gap T23 between the second lens and the third lens on the optical axis satisfy: 0.3 < (CT1 + T12) / (CT2 + T23) < 1.2; The combined focal length f2345 of the second, third, fourth, and fifth lenses and the combined focal length f12 of the first and second lenses satisfy: 0 < |f2345 / f12| < 1.0.

[0022] Further, the combined focal length f12 of the first and second lenses and the effective focal length f1 of the first lens satisfy: 1.5 < f12 / f1 < 2.5.

[0023] Further, the effective focal length f of the optical imaging lens and the combined focal length f2345 of the second, third, fourth, and fifth lenses satisfy: 1.0 < |f / f2345| < 2.5.

[0024] Further, the radius of curvature R4 of the imaging side of the second lens, the radius of curvature R6 of the imaging side of the third lens, and the radius of curvature R7 of the object side of the fourth lens satisfy: -0.6m -1 < R7 / (R6 * R4) < 0.6m -1 .

[0025] Further, the radius of curvature R1 of the object side of the first lens, the radius of curvature R6 of the imaging side of the third lens, and the radius of curvature R7 of the object side of the fourth lens satisfy: 0.5 < |R1 / R6 + |R1 / R7| < 2.

[0026] Further, the sum ∑CT of the central thicknesses of each lens from the first lens to the fifth lens and the distance BFL from the imaging side of the fifth lens to the imaging surface on the optical axis satisfy: 1.0 < ∑CT / BFL < 1.7.

[0027] Furthermore, the distance BFL from the imaging side surface of the fifth lens to the imaging plane on the optical axis, the sum of the air gaps ∑AT on the optical axis between adjacent lenses from the first lens to the fifth lens, and the edge thickness ET2 at the maximum effective radius of the second lens satisfy the following relationship: -0.2<(BFL-∑AT) / ET2<2.2.

[0028] Furthermore, the distance TD on the optical axis from the object side of the first lens to the imaging side of the fifth lens, the center thickness CT1 of the first lens and the center thickness CT5 of the fifth lens satisfy the following conditions: 2.5 <TD / (CT1+CT5)<4.2。

[0029] Furthermore, the maximum effective radius DT11 of the object side of the first lens, the maximum effective radius DT12 of the imaging side of the first lens, and the maximum effective radius DT51 of the object side of the fifth lens satisfy: 2.0<(DT11+DT12) / DT51<3.0.

[0030] Furthermore, the maximum effective radius DT22 of the imaging side surface of the second lens and the maximum effective radius DT32 of the imaging side surface of the third lens satisfy the following relationship: 1.8<|(DT22+DT32) / DT32|<2.5.

[0031] Furthermore, the on-axis distance SAG12 between the intersection of the imaging side surface of the first lens and the optical axis to the effective radius vertex of the imaging side surface of the first lens and the on-axis distance SAG21 between the intersection of the object side surface of the second lens and the optical axis to the effective radius vertex of the object side surface of the second lens satisfies: 0<|SAG12 / SAG21|<1.0.

[0032] Furthermore, the on-axis distance SAG31 between the intersection of the object side of the third lens and the optical axis to the effective radius vertex of the object side of the third lens, the on-axis distance SAG32 between the intersection of the imaging side of the third lens and the optical axis to the effective radius vertex of the imaging side of the third lens, and the on-axis distance SAG51 between the intersection of the object side of the fifth lens and the optical axis to the effective radius vertex of the object side of the fifth lens satisfy: -0.7<(SAG31-SAG32) / SAG51<0.6.

[0033] Furthermore, the center thickness CT1 of the first lens, the center thickness CT4 of the fourth lens, the edge thickness ET1 at the maximum effective radius of the first lens, and the edge thickness ET4 at the maximum effective radius of the fourth lens satisfy: 0<(ET1+ET4) / (CT1+CT4)<0.8.

[0034] Applying the technical solution of the present invention, the optical imaging lens sequentially includes, from the object side to the imaging side, a first lens with a positive optical power and a convex object side, a second lens with a negative optical power and a concave imaging side, a third lens with an optical power, a fourth lens with an optical power, and a fifth lens with an optical power; wherein, the effective focal length f₁ of the first lens, the effective focal length f of the optical imaging lens, and the entrance pupil diameter EPD of the optical imaging lens satisfy: 8.5mm 2 <(f₁ + f) * EPD / 10 < 10.5mm 2 ; the distance TTL on the optical axis from the object side of the first lens to the imaging surface, half of the diagonal length ImgH of the effective pixel area on the imaging surface, and the f-number FNO of the optical imaging lens satisfy: 7.5 < TTL / ImgH * FNO < 10; the central thickness CT₁ of the first lens, the air gap T₁₂ on the optical axis from the first lens to the second lens, the central thickness CT₂ of the second lens, and the air gap T₂₃ on the optical axis from the second lens to the third lens satisfy: 0.3 < (CT₁ + T₁₂) / (CT₂ + T₂₃) < 1.2.

[0035] By controlling the optical power of the first lens and the entrance pupil diameter of the optical imaging lens, it is beneficial to ensure the light-gathering ability of the optical imaging lens, beneficial to reduce Fno, and increase the upper limit of imaging quality. Through the reasonable combination of the optical powers of each lens, it is possible to balance aberrations and make the system reach the best imaging quality. In addition, the optical imaging lens of the present invention is a design scheme of a long-focus optical imaging lens with an equivalent focal length of 80mm. At the same time, as a long-focus lens, the large aperture with Fno equal to 2.4 effectively increases the light input of the optical imaging lens and greatly improves the imaging quality of the optical imaging lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0037] Figure 1 shows a schematic structural diagram of the optical imaging lens of Example 1 of the present invention;

[0038] <00001​​​​​​​​​​​ Figure 6 The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens;

[0041] Figure 11 1. A schematic structural diagram of an optical imaging lens according to Example 3 of the present invention is shown;

[0042] Figures 12 to 15 Shown respectively Figure 11 The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens;

[0043] Figure 16 1. A schematic structural diagram of an optical imaging lens according to Example 4 of the present invention is shown;

[0044] Figures 17 to 20 Shown respectively Figure 16 The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens;

[0045] Figure 21 1. A schematic structural diagram of an optical imaging lens according to Example 5 of the present invention is shown;

[0046] Figures 22 to 25 Shown respectively Figure 21 The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens;

[0047] Figure 26 1. A schematic structural diagram of an optical imaging lens according to Example 6 of the present invention is shown;

[0048] Figures 27 to 30 Shown respectively Figure 26 The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens;

[0049] Figure 31 1. A schematic structural diagram of an optical imaging lens according to Example 7 of the present invention is shown;

[0050] Figures 32 to 35 Shown respectively Figure 31 The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens;

[0051] Figure 36 1. A schematic structural diagram of an optical imaging lens according to Example 8 of the present invention is shown;

[0052] Figures 37 to 40 Shown respectively Figure 36 The axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration curve of the optical imaging lens.

[0053] The above drawings include the following reference numerals:

[0054] STO, aperture; E1, first lens; S1, object side of the first lens; S2, imaging side of the first lens; E2, second lens; S3, object side of the second lens; S4, imaging side of the second lens; E3, third lens; S5, object side of the third lens; S6, imaging side of the third lens; E4, fourth lens; S7, object side of the fourth lens; S8, imaging side of the fourth lens; E5, fifth lens; S9, object side of the fifth lens; S10, imaging side of the fifth lens; E6, filter; S11, object side of the filter; S12, imaging side of the filter; S13, imaging surface. DETAILED DESCRIPTION

[0055] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0056] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0057] In the present invention, unless otherwise specified, directional words such as "up, down, top, bottom" are usually used with reference to the directions shown in the drawings, or with reference to the components themselves in the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present invention.

[0058] It should be noted that in this specification, the expressions first, second, third, etc. are only used to distinguish one feature from another, and do not represent any limitation on the features. Therefore, without departing from the teachings of this application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0059] In the drawings, the thickness, size, and shape of the lenses are slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical and aspherical surfaces shown in the drawings are provided by way of example. That is, the shapes of the spherical and aspherical surfaces are not limited to those shown in the drawings. The drawings are for illustration only and are not drawn strictly to scale.

[0060] 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 closer to the object side is the object side surface of the lens, and the surface of each lens closer to the imaging side is called the imaging side surface of the lens. The judgment of the surface shape in the paraxial region can be based on the judgment method of those with ordinary knowledge in this field, and the convexity and concavity are judged by the positive and negative values of the R value (R refers to the radius of curvature in the paraxial region, usually the R value on the lens database in optical software). Taking the object side surface as an example, when the R value is positive, it is judged as a convex surface, and when the R value is negative, it is judged as a concave surface; taking the imaging side surface as an example, when the R value is positive, it is judged as a concave surface, and when the R value is negative, it is judged as a convex surface.

[0061] To solve the problem that it is difficult to simultaneously achieve both long focal length and large aperture in the existing optical imaging lenses, the present invention provides an optical imaging lens.

[0062] Embodiment 1

[0063] As Figures 1 to 40 shown, the optical imaging lens sequentially includes a first lens with a positive optical power and a convex object side surface, a second lens with a negative optical power and a concave imaging side surface, a third lens with an optical power, a fourth lens with an optical power, and a fifth lens with an optical power from the object side to the imaging side; wherein, the effective focal length f1 of the first lens, the effective focal length f of the optical imaging lens, and the entrance pupil diameter EPD of the optical imaging lens satisfy: 8.5mm 2 <(f1 + f)*EPD / 10 < 10.5mm 2 ; the distance TTL from the object side surface of the first lens to the imaging surface on the optical axis, half ImgH of the diagonal length of the effective pixel area on the imaging surface, and the f-number FNO of the optical imaging lens satisfy: 7.5 < TTL / ImgH*FNO < 10; the central thickness CT1 of the first lens, the air gap T12 between the first lens and the second lens on the optical axis, the central thickness CT2 of the second lens, and the air gap T23 between the second lens and the third lens on the optical axis satisfy: 0.3 < (CT1 + T12) / (CT2 + T23) < 1.2.

[0064] Preferably, 7.7 < TTL / ImgH*FNO < 8.2.

[0065] Preferably, 0.4 < (CT1 + T12) / (CT2 + T23) < 1.1.

[0066] By controlling the optical power of the first lens and the entrance pupil diameter of the optical imaging lens, it is beneficial to ensure the light-gathering ability of the optical imaging lens, reduce Fno, and increase the upper limit of imaging quality. By reasonably matching the optical powers between the lenses, it is possible to balance aberrations and achieve the best imaging quality of the system. In addition, the optical imaging lens of the present invention is a design scheme of a long-focus optical imaging lens with an equivalent focal length of 80 mm. At the same time, as a long-focus lens, the large aperture with Fno equal to 2.4 effectively increases the light input of the optical imaging lens and greatly improves the imaging quality of the optical imaging lens.

[0067] In this embodiment, the combined focal length f2345 of the second lens, the third lens, the fourth lens, and the fifth lens and the combined focal length f12 of the first lens and the second lens satisfy: 0 < |f2345 / f12| < 1.0. Meeting this conditional formula can make the overall lens more symmetrical and facilitate later processing and assembly. Preferably, 0.4 < |f2345 / f12| < 0.9.

[0068] In this embodiment, the combined focal length f12 of the first lens and the second lens and the effective focal length f1 of the first lens satisfy: 1.5 < f12 / f1 < 2.5. By reasonably distributing the optical powers between the first lens and the second lens and adopting a positive and negative optical power matching method, the chromatic aberration of the system can be effectively reduced. Preferably, 1.6 < f12 / f1 < 2.2.

[0069] In this embodiment, the effective focal length f of the optical imaging lens and the combined focal length f2345 of the second lens, the third lens, the fourth lens, and the fifth lens satisfy: 1.0 < |f / f2345| < 2.5. By controlling the proportion of the optical power contributions of the second lens, the third lens, the fourth lens, and the fifth lens, the morphology of each lens can be effectively improved, the sensitivity can be reduced, and the later processing can be facilitated. Preferably, 1.1 < |f / f2345| < 2.1.

[0070] In this embodiment, the radius of curvature R4 of the imaging side of the second lens, the radius of curvature R6 of the imaging side of the third lens, and the radius of curvature R7 of the object side of the fourth lens satisfy: -0.6m -1 < R7 / (R6*R4) < 0.6m -1 . By adjusting the radii of curvature of the surfaces of the second lens, the third lens, and the fourth lens, it is beneficial to balance aberrations and improve imaging quality. Preferably, -0.5 m -1 < R7 / (R6*R4) < 0.5m -1 .

[0071] In this embodiment, the curvature radius R1 of the object side of the first lens, the curvature radius R6 of the imaging side of the third lens, and the curvature radius R7 of the object side of the fourth lens satisfy: 0.5 < |R1 / R6 + |R1 / R7| < 2. By adjusting the curvature radii of the first lens, the third lens, and the fourth lens, the distortion of the system can be effectively reduced and maintained within a relatively small range. Preferably, 0.8 < |R1 / R6 + |R1 / R7| < 1.9.

[0072] In this embodiment, the sum ∑CT of the central thicknesses of each lens from the first lens to the fifth lens and the distance BFL on the optical axis from the imaging side of the fifth lens to the imaging surface satisfy: 1.0 < ∑CT / BFL < 1.7. Meeting this conditional formula can keep the thickness and aperture of the lens within a suitable range, facilitating the later processing and shaping of the lens. Preferably, 1.0 < ∑CT / BFL < 1.6.

[0073] In this embodiment, the central thickness CT1 of the first lens, the central thickness CT3 of the third lens, the central thickness CT4 of the fourth lens, the central thickness CT2 of the second lens, and the central thickness CT5 of the fifth lens satisfy: 1.5 < (CT1 + CT3 + CT4) / (CT2 + CT5) < 3.7. Meeting this conditional formula can make the arrangement of the lenses more uniform, facilitating the addition of the mechanism part during later processing. Preferably, 1.8 < (CT1 + CT3 + CT4) / (CT2 + CT5) < 3.6.

[0074] In this embodiment, the distance BFL on the optical axis from the imaging side of the fifth lens to the imaging surface, the sum ∑AT of the air gaps on the optical axis between adjacent lenses from the first lens to the fifth lens, and the edge thickness ET2 at the maximum effective radius of the second lens satisfy: -0.2 < (BFL - ∑AT) / ET2 < 2.2. By controlling the back focal length, the air gap, and the edge thickness of the second lens, the CRA can be improved to meet the requirements of the chip. Preferably, -0.1 < (BFL - ∑AT) / ET2 < 2.1.

[0075] In this embodiment, the distance TD on the optical axis from the object side of the first lens to the imaging side of the fifth lens, the central thickness CT1 of the first lens, and the central thickness CT5 of the fifth lens satisfy: 2.5 < TD / (CT1 + CT5) < 4.2. Meeting this conditional formula can control the overall length of the lens while ensuring the processability of the lens. Preferably, 2.8 < TD / (CT1 + CT5) < 4.0.

[0076] In this embodiment, the maximum effective radius DT11 of the object side of the first lens element, the maximum effective radius DT12 of the imaging side of the first lens element, and the maximum effective radius DT51 of the object side of the fifth lens element satisfy the following relationship: 2.0 < (DT11 + DT12) / DT51 < 3.0. Meeting this conditional equation allows the lens to maintain its decreasing aperture, facilitating flip-up assembly during later stages. Preferably, 2.1 < (DT11 + DT12) / DT51 < 2.7.

[0077] In this embodiment, the maximum effective radius DT22 of the imaging side of the second lens element and the maximum effective radius DT32 of the imaging side of the third lens element satisfy the following relationship: 1.8 < |(DT22 + DT32) / DT32| < 2.5. Meeting this conditional expression maintains the overall decreasing lens aperture. When used as a periscope lens, the lens height can be reduced, facilitating later assembly. Preferably, 1.9 < |(DT22 + DT32) / DT32| < 2.3.

[0078] In this embodiment, the on-axis distance SAG12 between the intersection of the imaging side surface of the first lens and the optical axis and the vertex of the effective radius of the imaging side surface of the first lens, and the on-axis distance SAG21 between the intersection of the object side surface of the second lens and the optical axis and the vertex of the effective radius of the object side surface of the second lens, satisfy the following: 0 < |SAG12 / SAG21| < 1.0. Meeting this conditional equation ensures that the shapes of the first two lenses are easy to process and reduces lens sensitivity. Preferably, 0.1 < |SAG12 / SAG21| < 0.9.

[0079] In this embodiment, the on-axis distance SAG31 between the intersection of the object side surface of the third lens element and the optical axis and the vertex of the effective radius of the object side surface of the third lens element, the on-axis distance SAG32 between the intersection of the imaging side surface of the third lens element and the optical axis and the vertex of the effective radius of the imaging side surface of the third lens element, and the on-axis distance SAG51 between the intersection of the object side surface of the fifth lens element and the optical axis and the vertex of the effective radius of the object side surface of the fifth lens element satisfy the following conditions: -0.7 < (SAG31 - SAG32) / SAG51 < 0.6. Satisfying this conditional expression helps improve the sensitivity of the lens. Preferably, the following conditions are met: -0.5 < (SAG31 - SAG32) / SAG51 < 0.5.

[0080] In this embodiment, the following relationships are satisfied among the central thickness CT1 of the first lens, the central thickness CT4 of the fourth lens, the edge thickness ET1 at the maximum effective radius of the first lens, and the edge thickness ET4 at the maximum effective radius of the fourth lens: 0 < (ET1 + ET4) / (CT1 + CT4) < 0.8. Satisfying this conditional formula can improve the lens sensitivity and ensure the workability of the corresponding lens. Preferably, 0.3 < (ET1 + ET4) / (CT1 + CT4) < 0.7.

[0081] Embodiment 2

[0082] As Figures 1 to 40 shown, the optical imaging lens includes, in order from the object side to the imaging side: a first lens having a positive optical power and a convex object side surface; a second lens having a negative optical power and a concave imaging side surface; a third lens having an optical power; a fourth lens having an optical power; a fifth lens having an optical power; wherein, the following relationships are satisfied among the effective focal length f1 of the first lens, the effective focal length f of the optical imaging lens, and the entrance pupil diameter EPD of the optical imaging lens: 8.5mm 2 < (f1 + f) * EPD / 10 < 10.5mm 2 ; the following relationship is satisfied among the distance TTL on the optical axis from the object side surface of the first lens to the imaging surface, half ImgH of the diagonal length of the effective pixel region on the imaging surface, and the f-number FNO of the optical imaging lens: 7.5 < TTL / ImgH * FNO < 10; the following relationship is satisfied among the central thickness CT1 of the first lens, the central thickness CT3 of the third lens, the central thickness CT4 of the fourth lens, the central thickness CT2 of the second lens, and the central thickness CT5 of the fifth lens: 1.5 < (CT1 + CT3 + CT4) / (CT2 + CT5) < 3.7.

[0083] Preferably, 7.7 < TTL / ImgH * FNO < 8.2.

[0084] Preferably, 1.8 < (CT1 + CT3 + CT4) / (CT2 + CT5) < 3.6.

[0085] By controlling the optical power of the first lens and the entrance pupil diameter of the optical imaging lens, it is beneficial to ensure the light-gathering ability of the optical imaging lens, reduce Fno, and increase the upper limit of imaging quality. Through the reasonable combination of the optical powers of each lens, the aberration can be balanced, enabling the system to achieve the best imaging quality. In addition, the optical imaging lens of the present invention is a design scheme of a long-focus optical imaging lens with an equivalent focal length of 80 mm. At the same time, as a long-focus lens, the large aperture with Fno equal to 2.4 effectively increases the light input of the optical imaging lens, greatly improving the imaging quality of the optical imaging lens. By restricting the relational expressions among the central thickness CT1 of the first lens, the central thickness CT3 of the third lens, the central thickness CT4 of the fourth lens, the central thickness CT2 of the second lens, and the central thickness CT5 of the fifth lens, the arrangement of the lenses can be made more uniform, facilitating the addition of mechanism parts during later processing.

[0086] In this embodiment, the central thickness CT1 of the first lens, the air gap T12 on the optical axis between the first lens and the second lens, the central thickness CT2 of the second lens, and the air gap T23 on the optical axis between the second lens and the third lens satisfy: 0.3 < (CT1 + T12) / (CT2 + T23) < 1.2. Such a setting is beneficial to the reasonable distribution of the lens thickness, facilitating later assembly. Preferably, 0.4 < (CT1 + T12) / (CT2 + T23) < 1.1.

[0087] In this embodiment, the combined focal length f2345 of the second lens, the third lens, the fourth lens, and the fifth lens and the combined focal length f12 of the first lens and the second lens satisfy: 0 < |f2345 / f12| < 1.0. Meeting this conditional expression can make the overall lens more symmetrical, facilitating later processing and assembly. Preferably, 0.4 < |f2345 / f12| < 0.9.

[0088] In this embodiment, the combined focal length f12 of the first lens and the second lens and the effective focal length f1 of the first lens satisfy: 1.5 < f12 / f1 < 2.5. By reasonably distributing the optical powers between the first lens and the second lens and adopting a positive and negative optical power combination method, the chromatic aberration of the system can be effectively reduced. Preferably, 1.6 < f12 / f1 < 2.2.

[0089] In this embodiment, the effective focal length f of the optical imaging lens and the combined focal length f2345 of the second lens, the third lens, the fourth lens, and the fifth lens satisfy: 1.0 < |f / f2345| < 2.5. By controlling the proportion of the optical power contributions of the second lens, the third lens, the fourth lens, and the fifth lens, the morphology of each lens can be effectively improved, the sensitivity can be reduced, and it is convenient for later processing. Preferably, 1.1 < |f / f2345| < 2.1.

[0090] In this embodiment, the following relationship is satisfied among the radius of curvature R4 of the imaging side of the second lens, the radius of curvature R6 of the imaging side of the third lens, and the radius of curvature R7 of the object side of the fourth lens: -0.6m -1 <R7 / (R6*R4)<0.6m -1 . By adjusting the radii of curvature of the surfaces of the second lens, the third lens, and the fourth lens, it is beneficial to balance aberration and improve imaging quality. Preferably, -0.5 m -1 <R7 / (R6*R4)<0.5m -1 .

[0091] In this embodiment, the following relationship is satisfied among the radius of curvature R1 of the object side of the first lens, the radius of curvature R6 of the imaging side of the third lens, and the radius of curvature R7 of the object side of the fourth lens: 0.5<|R1 / R6 + |R1 / R7|<2. By adjusting the radii of curvature of the first lens, the third lens, and the fourth lens, the distortion of the system can be effectively reduced and kept within a relatively small range. Preferably, 0.8<|R1 / R6 + |R1 / R7|<1.9.

[0092] In this embodiment, the following relationship is satisfied between the sum ∑CT of the central thicknesses of each lens from the first lens to the fifth lens and the distance BFL on the optical axis from the imaging side of the fifth lens to the imaging surface: 1.0<∑CT / BFL<1.7. Satisfying this conditional expression can keep the thickness and aperture of the lens within a suitable range, facilitating the subsequent processing and shaping of the lens. Preferably, 1.0<∑CT / BFL<1.6.

[0093] In this embodiment, the following relationship is satisfied among the distance BFL on the optical axis from the imaging side of the fifth lens to the imaging surface, the sum ∑AT of the air gaps on the optical axis between adjacent lenses from the first lens to the fifth lens, and the edge thickness ET2 at the maximum effective radius of the second lens: -0.2<(BFL - ∑AT) / ET2<2.2. By controlling the back focal length, the air gap, and the edge thickness of the second lens, the CRA can be improved to meet the requirements of the chip. Preferably, -0.1<(BFL - ∑AT) / ET2<2.1.

[0094] In this embodiment, the following relationship is satisfied among the distance TD on the optical axis from the object side of the first lens to the imaging side of the fifth lens, the central thickness CT1 of the first lens, and the central thickness CT5 of the fifth lens: 2.5<TD / (CT1 + CT5)<4.2. Satisfying this conditional expression can control the overall length of the lens while ensuring the processability of the lens. Preferably, 2.8<TD / (CT1 + CT5)<4.0.

[0095] In this embodiment, the maximum effective radius DT11 of the object side of the first lens element, the maximum effective radius DT12 of the imaging side of the first lens element, and the maximum effective radius DT51 of the object side of the fifth lens element satisfy the following relationship: 2.0 < (DT11 + DT12) / DT51 < 3.0. Meeting this conditional equation allows the lens to maintain its decreasing aperture, facilitating flip-up assembly during later stages. Preferably, 2.1 < (DT11 + DT12) / DT51 < 2.7.

[0096] In this embodiment, the maximum effective radius DT22 of the imaging side of the second lens element and the maximum effective radius DT32 of the imaging side of the third lens element satisfy the following relationship: 1.8 < |(DT22 + DT32) / DT32| < 2.5. Meeting this conditional expression maintains the overall decreasing lens aperture. When used as a periscope lens, the lens height can be reduced, facilitating later assembly. Preferably, 1.9 < |(DT22 + DT32) / DT32| < 2.3.

[0097] In this embodiment, the on-axis distance SAG12 between the intersection of the imaging side surface of the first lens and the optical axis and the vertex of the effective radius of the imaging side surface of the first lens, and the on-axis distance SAG21 between the intersection of the object side surface of the second lens and the optical axis and the vertex of the effective radius of the object side surface of the second lens, satisfy the following: 0 < |SAG12 / SAG21| < 1.0. Meeting this conditional equation ensures that the shapes of the first two lenses are easy to process and reduces lens sensitivity. Preferably, 0.1 < |SAG12 / SAG21| < 0.9.

[0098] In this embodiment, the on-axis distance SAG31 between the intersection of the object side surface of the third lens element and the optical axis and the vertex of the effective radius of the object side surface of the third lens element, the on-axis distance SAG32 between the intersection of the imaging side surface of the third lens element and the optical axis and the vertex of the effective radius of the imaging side surface of the third lens element, and the on-axis distance SAG51 between the intersection of the object side surface of the fifth lens element and the optical axis and the vertex of the effective radius of the object side surface of the fifth lens element satisfy the following conditions: -0.7 < (SAG31 - SAG32) / SAG51 < 0.6. Satisfying this conditional expression helps improve the sensitivity of the lens. Preferably, the following conditions are met: -0.5 < (SAG31 - SAG32) / SAG51 < 0.5.

[0099] In this embodiment, the center thickness CT1 of the first lens, the center thickness CT4 of the fourth lens, the edge thickness ET1 at the maximum effective radius of the first lens, and the edge thickness ET4 at the maximum effective radius of the fourth lens satisfy the following relationship: 0 < (ET1 + ET4) / (CT1 + CT4) < 0.8. Meeting this conditional equation improves lens sensitivity and ensures the processability of the corresponding lens. Preferably, 0.3 < (ET1 + ET4) / (CT1 + CT4) < 0.7.

[0100] 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.

[0101] The optical imaging lens in this application can utilize multiple lenses, such as the five lenses described above. By rationally allocating the optical power, surface shape, center thickness, and on-axis distance between each lens, the sensitivity of the lens can be effectively reduced and its machinability improved, making the optical imaging lens more amenable to production and processing and suitable for portable electronic devices such as smartphones. The aforementioned optical imaging lens also offers the advantages of being ultra-thin and providing excellent imaging quality, meeting the demands of miniaturization in smart electronic products.

[0102] In this application, at least one of the lens surfaces is an aspherical surface. Aspherical lenses are characterized by a continuously varying curvature from the lens center to the lens periphery. Unlike spherical lenses, which have a constant curvature from the lens center to the lens periphery, aspherical lenses have a more optimized curvature radius, offering advantages in reducing distortion and astigmatism. The use of aspherical lenses can minimize aberrations that occur during imaging, thereby improving image quality.

[0103] However, those skilled in the art will appreciate that the number of lenses comprising the optical imaging lens can be varied to achieve the various results and advantages described herein without departing from the claimed technical solutions. For example, while the embodiments describe an optical imaging lens using five lenses as an example, the optical imaging lens is not limited to five lenses. If desired, the optical imaging lens may also include other numbers of lenses.

[0104] The following further describes examples of specific surface shapes and parameters of the optical imaging lens applicable to the above-mentioned embodiments with reference to the accompanying drawings.

[0105] It should be noted that any one of the following examples 1 to 8 is applicable to all embodiments of the present application.

[0106] Example 1

[0107] like Figures 1 to 5As shown, the optical imaging lens of Example 1 of the present application is described. Figure 1 A schematic diagram of the optical imaging lens structure of Example 1 is shown.

[0108] like Figure 1 As shown, the optical imaging lens includes, from the object side to the imaging 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.

[0109] The first lens E1 has positive power, with its object-side surface S1 being convex and its imaging-side surface S2 being concave. The second lens E2 has negative power, with its object-side surface S3 being convex and its imaging-side surface S4 being concave. The third lens E3 has positive power, with its object-side surface S5 being convex and its imaging-side surface S6 being concave. The fourth lens E4 has positive power, with its object-side surface S7 being concave and its imaging-side surface S8 being convex. The fifth lens E5 has negative power, with its object-side surface S9 being convex and its imaging-side surface S10 being concave. The filter E6 has an object-side surface S11 and an imaging-side surface S12. Light from an object sequentially passes through surfaces S1 to S12 and is ultimately imaged on imaging surface S13.

[0110] In this example, the total effective focal length f of the optical imaging lens is 12.19 mm, the maximum half field of view Semi-FOV of the optical imaging lens is 16.09°, the total length TTL of the optical imaging lens is 11.86 mm, and the image height ImgH is 3.53 mm.

[0111] Table 1 shows the basic structural parameters of the optical imaging lens of Example 1, wherein the units of curvature radius, thickness / distance and effective radius are all millimeters (mm).

[0112]

[0113]

[0114] Table 1

[0115] In Example 1, the object-side surface and the image-side surface of any one of the first lens E1 to the fifth lens E5 are both aspherical surfaces. The surface shape of each aspherical lens can be defined by, but not limited to, the following aspherical surface formula:

[0116]

[0117] Where x is the distance vector from the vertex of the aspheric surface at a height of h along the optical axis; c is the paraxial curvature of the aspheric surface, c = 1 / R (i.e., paraxial curvature c is the reciprocal of the radius of curvature R in Table 1 above); k is the conic coefficient; and Ai is the correction coefficient for the i-th order of the aspheric surface. Table 2 below lists the high-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28, and A30 that can be used for each aspheric mirror surface S1-S10 in Example 1.

[0118] Face number A4 A6 A8 A10 A12 A14 A16 S1 -5.63E-04 1.69E-04 -1.60E-04 1.66E-04 -8.80E-05 2.58E-05 -4.36E-06 S2 -1.55E-02 1.83E-02 -9.14E-03 2.71E-03 -5.11E-04 6.06E-05 -4.13E-06 S3 -2.54E-02 2.30E-02 -1.10E-02 3.50E-03 -1.34E-03 7.67E-04 -3.77E-04 S4 -1.32E-02 8.93E-03 -3.24E-03 3.50E-04 1.83E-04 -7.12E-05 9.70E-06 S5 1.86E-03 -2.42E-04 1.06E-03 -1.18E-03 8.07E-04 -3.13E-04 7.12E-05 S6 1.92E-03 6.04E-04 -1.14E-02 3.42E-02 -6.20E-02 7.45E-02 -6.17E-02 S7 6.30E-03 -1.16E-02 1.00E-02 -9.95E-03 6.63E-03 -2.87E-03 8.41E-04 S8 3.00E-02 -3.55E-02 3.44E-02 -2.26E-02 4.55E-03 6.83E-03 -8.18E-03 S9 -2.57E-02 -2.56E-02 3.80E-02 -3.35E-02 1.98E-02 -8.42E-03 2.64E-03 S10 -5.69E-02 1.90E-02 -7.31E-03 2.52E-03 -8.04E-04 2.31E-04 -5.03E-05 Face number A18 A20 A22 A24 A26 A28 A30 S1 4.00E-07 -1.56E-08 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S2 1.23E-07 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S3 1.28E-04 -2.93E-05 4.49E-06 -4.40E-07 2.51E-08 -6.31E-10 0.00E+00 S4 -4.64E-07 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S5 -8.92E-06 4.77E-07 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S6 3.60E-02 -1.49E-02 4.32E-03 -8.57E-04 1.10E-04 -8.15E-06 2.63E-07 S7 -1.67E-04 2.05E-05 -1.15E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S8 4.85E-03 -1.86E-03 4.82E-04 -8.46E-05 9.60E-06 -6.38E-07 1.88E-08 S9 -5.88E-04 8.65E-05 -7.34E-06 2.69E-07 0.00E+00 0.00E+00 0.00E+00 S10 7.04E-06 -5.45E-07 1.76E-08 0.00E+00 0.00E+00 0.00E+00 0.00E+00

[0119] Table 2

[0120] Figure 2 The axial chromatic aberration curve of the optical imaging lens of Example 1 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the optical imaging lens. Figure 3 The astigmatism curve of the optical imaging lens of Example 1 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 4 The distortion curve of the optical imaging lens of Example 1 is shown, which represents the distortion magnitude values ​​corresponding to different field angles. Figure 5 The 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 optical imaging lens.

[0121] according to Figures 2 to 5 It can be seen that the optical imaging lens provided in Example 1 can achieve good imaging quality.

[0122] Example 2

[0123] like Figures 6 to 10 FIG2 shows an optical imaging lens according to Example 2 of the present application. In this example and the following examples, for the sake of brevity, some descriptions similar to Example 1 will be omitted. Figure 6 A schematic diagram of the optical imaging lens structure of Example 2 is shown.

[0124] like Figure 6 As shown, the optical imaging lens includes, from the object side to the imaging 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.

[0125] The first lens E1 has positive power, with its object-side surface S1 being convex and its imaging-side surface S2 being convex. The second lens E2 has negative power, with its object-side surface S3 being convex and its imaging-side surface S4 being concave. The third lens E3 has negative power, with its object-side surface S5 being concave and its imaging-side surface S6 being convex. The fourth lens E4 has positive power, with its object-side surface S7 being concave and its imaging-side surface S8 being convex. The fifth lens E5 has negative power, with its object-side surface S9 being convex and its imaging-side surface S10 being concave. The filter E6 has an object-side surface S11 and an imaging-side surface S12. Light from an object sequentially passes through surfaces S1 to S12 and is ultimately imaged on imaging surface S13.

[0126] In this example, the total effective focal length f of the optical imaging lens is 12.00 mm, the maximum half field of view Semi-FOV of the optical imaging lens is 16.10°, the total length TTL of the optical imaging lens is 11.69 mm, and the image height ImgH is 3.53 mm.

[0127] Table 3 shows the basic structural parameters of the optical imaging lens of Example 2, wherein the units of curvature radius, thickness / distance, and effective radius are all millimeters (mm).

[0128]

[0129]

[0130] Table 3

[0131] Table 4 shows the high-order coefficients of each aspheric mirror surface that can be used in Example 2, wherein each aspheric surface shape can be defined by formula (1) given in Example 1 above.

[0132] Face number A4 A6 A8 A10 A12 A14 A16 S1 -2.58E-04 -7.53E-05 -3.68E-05 6.03E-05 -3.56E-05 1.06E-05 -1.75E-06 S2 -1.15E-02 1.54E-02 -1.01E-02 4.18E-03 -1.14E-03 2.07E-04 -2.39E-05 S3 -1.76E-02 1.60E-02 -1.34E-02 1.35E-02 -1.46E-02 1.25E-02 -7.79E-03 S4 -6.89E-03 1.71E-03 1.16E-03 -1.56E-03 8.39E-04 -1.93E-04 3.78E-06 S5 -1.76E-03 -3.34E-03 5.14E-03 -1.16E-03 -1.45E-03 1.48E-03 -6.14E-04 S6 8.21E-04 1.88E-02 -1.24E-01 3.89E-01 -7.60E-01 1.02E+00 -9.61E-01 S7 7.80E-03 -6.45E-03 -2.41E-02 6.49E-02 -8.48E-02 6.36E-02 -2.25E-02 S8 6.86E-02 -1.68E-01 2.81E-01 -3.34E-01 2.89E-01 -1.84E-01 8.78E-02 S9 2.81E-02 -1.86E-01 3.20E-01 -3.74E-01 3.17E-01 -1.99E-01 9.31E-02 S10 -4.68E-02 8.61E-03 -1.34E-03 2.74E-03 -4.50E-03 3.93E-03 -2.18E-03 Face number A18 A20 A22 A24 A26 A28 A30 S1 1.56E-07 -5.84E-09 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S2 1.61E-06 -4.82E-08 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S3 3.48E-03 -1.12E-03 2.57E-04 -4.12E-05 4.36E-06 -2.74E-07 7.74E-09 S4 5.74E-06 -6.99E-07 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S5 1.22E-04 -9.39E-06 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S6 6.55E-01 -3.22E-01 1.13E-01 -2.78E-02 4.51E-03 -4.35E-04 1.89E-05 S7 -4.63E-03 9.82E-03 -5.46E-03 1.71E-03 -3.20E-04 3.38E-05 -1.55E-06 S8 -3.12E-02 8.26E-03 -1.60E-03 2.22E-04 -2.07E-05 1.17E-06 -3.00E-08 S9 -3.27E-02 8.55E-03 -1.65E-03 2.26E-04 -2.10E-05 1.18E-06 -3.03E-08 S10 8.25E-04 -2.19E-04 4.08E-05 -5.24E-06 4.40E-07 -2.18E-08 4.84E-10

[0133] Table 4

[0134] Figure 7 The axial chromatic aberration curve of the optical imaging lens of Example 2 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the optical imaging lens. Figure 8 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 9 The distortion curve of the optical imaging lens of Example 2 is shown, which represents the distortion magnitude values ​​corresponding to different field angles. Figure 10 The 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 optical imaging lens.

[0135] according to Figures 7 to 10 It can be seen that the optical imaging lens provided in Example 2 can achieve good imaging quality.

[0136] Example 3

[0137] like Figures 11 to 15 As shown, the optical imaging lens of Example 3 of this application is described. Figure 11 A schematic diagram of the optical imaging lens structure of Example 3 is shown.

[0138] like Figure 11 As shown, the optical imaging lens includes, from the object side to the imaging 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.

[0139] The first lens E1 has positive power, with its object-side surface S1 being convex and its imaging-side surface S2 being convex. The second lens E2 has negative power, with its object-side surface S3 being convex and its imaging-side surface S4 being concave. The third lens E3 has positive power, with its object-side surface S5 being concave and its imaging-side surface S6 being convex. The fourth lens E4 has positive power, with its object-side surface S7 being concave and its imaging-side surface S8 being convex. The fifth lens E5 has negative power, with its object-side surface S9 being concave and its imaging-side surface S10 being concave. The filter E6 has an object-side surface S11 and an imaging-side surface S12. Light from an object sequentially passes through surfaces S1 to S12 and is ultimately imaged on imaging surface S13.

[0140] In this example, the total effective focal length f of the optical imaging lens is 11.99 mm, the maximum half field of view Semi-FOV of the optical imaging lens is 16.02°, the total length TTL of the optical imaging lens is 12.00 mm, and the image height ImgH is 3.53 mm.

[0141] Table 5 shows the basic structural parameters of the optical imaging lens of Example 3, where the units of curvature radius, thickness / distance and effective radius are all millimeters (mm).

[0142]

[0143] Table 5

[0144] Table 6 shows the high-order coefficients of each aspheric mirror surface that can be used in Example 3, wherein each aspheric surface shape can be defined by formula (1) given in Example 1 above.

[0145]

[0146]

[0147] Table 6

[0148] Figure 12 The axial chromatic aberration curve of the optical imaging lens of Example 3 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the optical imaging lens. Figure 13 The astigmatism curve of the optical imaging lens of Example 3 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 14 The distortion curve of the optical imaging lens of Example 3 is shown, which represents the distortion magnitude values ​​corresponding to different field angles. Figure 15 The 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 optical imaging lens.

[0149] according to Figures 12 to 15 It can be seen that the optical imaging lens provided in Example 3 can achieve good imaging quality.

[0150] Example 4

[0151] like Figures 16 to 20 As shown, the optical imaging lens of Example 4 of the present application is described. Figure 16 A schematic diagram of the optical imaging lens structure of Example 4 is shown.

[0152] like Figure 16 As shown, the optical imaging lens includes, from the object side to the imaging 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.

[0153] The first lens E1 has positive power, with its object-side surface S1 being convex and its imaging-side surface S2 being convex. The second lens E2 has negative power, with its object-side surface S3 being convex and its imaging-side surface S4 being concave. The third lens E3 has negative power, with its object-side surface S5 being convex and its imaging-side surface S6 being concave. The fourth lens E4 has positive power, with its object-side surface S7 being convex and its imaging-side surface S8 being concave. The fifth lens E5 has negative power, with its object-side surface S9 being convex and its imaging-side surface S10 being concave. The filter E6 has an object-side surface S11 and an imaging-side surface S12. Light from an object sequentially passes through surfaces S1 to S12 and is ultimately imaged on imaging surface S13.

[0154] In this example, the total effective focal length f of the optical imaging lens is 11.99 mm, the maximum half field of view Semi-FOV of the optical imaging lens is 16.06°, the total length TTL of the optical imaging lens is 11.53 mm, and the image height ImgH is 3.53 mm.

[0155] Table 7 shows the basic structural parameters of the optical imaging lens of Example 4, where the units of curvature radius, thickness / distance, and effective radius are all millimeters (mm).

[0156]

[0157] Table 7

[0158] Table 8 shows the high-order coefficients of each aspheric mirror surface that can be used in Example 4, where the surface shape of each aspheric surface can be defined by formula (1) given in Example 1 above.

[0159] Face number A4 A6 A8 A10 A12 A14 A16 S1 -4.10E-04 -1.39E-04 1.17E-04 -5.42E-05 1.54E-05 -2.76E-06 2.93E-07 S2 -1.63E-02 2.33E-02 -1.52E-02 6.42E-03 -1.85E-03 3.56E-04 -4.42E-05 S3 -2.59E-02 2.62E-02 -1.58E-02 7.95E-03 -4.97E-03 3.56E-03 -2.09E-03 S4 -1.16E-02 6.96E-03 -9.83E-04 -1.55E-03 1.31E-03 -5.10E-04 1.11E-04 S5 -1.55E-03 4.24E-03 -1.12E-03 -1.40E-05 1.79E-04 -8.71E-05 2.05E-05 S6 -1.98E-02 1.92E-02 -2.96E-02 5.21E-02 -6.64E-02 6.07E-02 -4.04E-02 S7 1.12E-02 6.90E-03 -6.25E-02 1.12E-01 -1.16E-01 7.85E-02 -3.53E-02 S8 2.50E-02 3.84E-03 -7.95E-02 1.27E-01 -1.03E-01 4.35E-02 -2.62E-03 S9 -3.53E-03 -4.28E-03 -4.17E-02 4.99E-02 -3.79E-04 -4.87E-02 5.46E-02 S10 -3.53E-02 1.76E-02 -4.78E-02 7.40E-02 -6.98E-02 4.45E-02 -2.01E-02 Face number A18 A20 A22 A24 A26 A28 A30 S1 -1.69E-08 3.62E-10 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S2 3.18E-06 -1.01E-07 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S3 8.94E-04 -2.74E-04 5.98E-05 -9.11E-06 9.23E-07 -5.59E-08 1.53E-09 S4 -1.30E-05 6.33E-07 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S5 -2.42E-06 1.13E-07 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S6 1.98E-02 -7.07E-03 1.83E-03 -3.30E-04 3.97E-05 -2.83E-06 9.13E-08 S7 1.01E-02 -1.46E-03 -7.78E-05 7.97E-05 -1.57E-05 1.45E-06 -5.45E-08 S8 -7.86E-03 4.97E-03 -1.61E-03 3.22E-04 -3.98E-05 2.79E-06 -8.56E-08 S9 -3.29E-02 1.28E-02 -3.33E-03 5.81E-04 -6.53E-05 4.28E-06 -1.24E-07 S10 6.56E-03 -1.56E-03 2.68E-04 -3.22E-05 2.58E-06 -1.24E-07 2.67E-09

[0160] Table 8

[0161] Figure 17 The axial chromatic aberration curve of the optical imaging lens of Example 4 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the optical imaging lens. Figure 18 The astigmatism curve of the optical imaging lens of Example 4 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 19 The distortion curve of the optical imaging lens of Example 4 is shown, which represents the distortion magnitude values ​​corresponding to different field angles. Figure 20 The 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 optical imaging lens.

[0162] according to Figures 17 to 20 It can be seen that the optical imaging lens provided in Example 4 can achieve good imaging quality.

[0163] Example 5

[0164] like Figures 21 to 25 As shown, the optical imaging lens of Example 5 of the present application is described. Figure 21 A schematic diagram of the optical imaging lens structure of Example 5 is shown.

[0165] like Figure 21 As shown, the optical imaging lens includes, from the object side to the imaging 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.

[0166] The first lens E1 has positive power, with its object-side surface S1 being convex and its imaging-side surface S2 being concave. The second lens E2 has negative power, with its object-side surface S3 being convex and its imaging-side surface S4 being concave. The third lens E3 has negative power, with its object-side surface S5 being convex and its imaging-side surface S6 being concave. The fourth lens E4 has negative power, with its object-side surface S7 being convex and its imaging-side surface S8 being concave. The fifth lens E5 has positive power, with its object-side surface S9 being convex and its imaging-side surface S10 being concave. The filter E6 has an object-side surface S11 and an imaging-side surface S12. Light from an object sequentially passes through surfaces S1 to S12 and is ultimately imaged on imaging surface S13.

[0167] In this example, the total effective focal length f of the optical imaging lens is 11.99 mm, the maximum half field of view Semi-FOV of the optical imaging lens is 16.03°, the total length TTL of the optical imaging lens is 12.00 mm, and the image height ImgH is 3.53 mm.

[0168] Table 9 shows the basic structural parameters of the optical imaging lens of Example 5, where the units of curvature radius, thickness / distance, and effective radius are all millimeters (mm).

[0169]

[0170]

[0171] Table 9

[0172] Table 10 shows the high-order coefficients of each aspheric mirror surface that can be used in Example 5, where the surface shape of each aspheric surface can be defined by formula (1) given in Example 1 above.

[0173] Face number A4 A6 A8 A10 A12 A14 A16 S1 -1.16E-03 4.69E-04 -2.54E-04 1.63E-04 -8.07E-05 2.56E-05 -4.75E-06 S2 -4.51E-02 6.14E-02 -4.54E-02 2.06E-02 -5.94E-03 1.09E-03 -1.23E-04 S3 -4.39E-02 6.55E-02 -5.95E-02 4.14E-02 -2.63E-02 1.52E-02 -7.10E-03 S4 -3.34E-03 9.10E-03 -9.72E-03 5.46E-03 -1.87E-03 4.08E-04 -5.46E-05 S5 4.96E-03 -5.59E-04 -5.12E-04 4.35E-04 -1.96E-04 6.43E-05 -1.30E-05 S6 5.43E-03 -2.71E-02 1.07E-01 -2.53E-01 3.96E-01 -4.35E-01 3.44E-01 S7 -3.43E-02 -3.61E-03 7.66E-02 -2.22E-01 4.08E-01 -5.27E-01 4.91E-01 S8 1.12E-01 -4.06E-01 8.38E-01 -1.24E+00 1.32E+00 -1.02E+00 5.67E-01 S9 -1.01E-01 1.05E-01 -3.32E-01 7.60E-01 -1.17E+00 1.25E+00 -9.58E-01 S10 -1.79E-02 2.61E-04 -4.56E-03 1.35E-02 -1.82E-02 1.53E-02 -8.77E-03 Face number A18 A20 A22 A24 A26 A28 A30 S1 4.68E-07 -1.89E-08 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S2 7.78E-06 -2.12E-07 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S3 2.51E-03 -6.48E-04 1.20E-04 -1.55E-05 1.33E-06 -6.82E-08 1.57E-09 S4 4.09E-06 -1.31E-07 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S5 1.42E-06 -6.45E-08 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S6 -1.98E-01 8.33E-02 -2.53E-02 5.43E-03 -7.82E-04 6.81E-05 -2.72E-06 S7 -3.31E-01 1.62E-01 -5.68E-02 1.39E-02 -2.26E-03 2.18E-04 -9.47E-06 S8 -2.24E-01 6.08E-02 -1.05E-02 9.20E-04 1.54E-05 -1.08E-05 6.81E-07 S9 5.28E-01 -2.11E-01 6.00E-02 -1.19E-02 1.57E-03 -1.22E-04 4.27E-06 S10 3.54E-03 -1.02E-03 2.08E-04 -2.93E-05 2.72E-06 -1.49E-07 3.68E-09

[0174] Table 10

[0175] Figure 22 The axial chromatic aberration curve of the optical imaging lens of Example 5 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the optical imaging lens. Figure 23 The astigmatism curve of the optical imaging lens of Example 5 is shown, which represents meridional field curvature and sagittal field curvature. Figure 24 The distortion curve of the optical imaging lens of Example 5 is shown, which represents the distortion magnitude values ​​corresponding to different field angles. Figure 25 The 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 optical imaging lens.

[0176] according to Figures 22 to 25 It can be seen that the optical imaging lens provided in Example 5 can achieve good imaging quality.

[0177] Example 6

[0178] like Figures 26 to 30 As shown, the optical imaging lens of Example 6 of the present application is described. Figure 26 A schematic diagram of the optical imaging lens structure of Example 6 is shown.

[0179] like Figure 26 As shown, the optical imaging lens includes, from the object side to the imaging 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.

[0180] The first lens E1 has positive power, with its object-side surface S1 being convex and its imaging-side surface S2 being convex. The second lens E2 has negative power, with its object-side surface S3 being convex and its imaging-side surface S4 being concave. The third lens E3 has negative power, with its object-side surface S5 being convex and its imaging-side surface S6 being concave. The fourth lens E4 has positive power, with its object-side surface S7 being concave and its imaging-side surface S8 being convex. The fifth lens E5 has negative power, with its object-side surface S9 being convex and its imaging-side surface S10 being concave. The filter E6 has an object-side surface S11 and an imaging-side surface S12. Light from an object sequentially passes through surfaces S1 to S12 and is ultimately imaged on imaging surface S13.

[0181] In this example, the total effective focal length f of the optical imaging lens is 11.99 mm, the maximum half field of view Semi-FOV of the optical imaging lens is 16.05°, the total length TTL of the optical imaging lens is 11.46 mm, and the image height ImgH is 3.53 mm.

[0182] Table 11 shows the basic structural parameters of the optical imaging lens of Example 6, where the units of curvature radius, thickness / distance, and effective radius are all millimeters (mm).

[0183]

[0184] Table 11

[0185] Table 12 shows the high-order coefficients of each aspheric mirror surface that can be used in Example 6, where each aspheric surface shape can be defined by formula (1) given in Example 1 above.

[0186]

[0187]

[0188] Table 12

[0189] Figure 27 The axial chromatic aberration curve of the optical imaging lens of Example 6 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the optical imaging lens. Figure 28 The astigmatism curve of the optical imaging lens of Example 6 is shown, which represents meridional field curvature and sagittal field curvature. Figure 29 The distortion curve of the optical imaging lens of Example 6 is shown, which represents the distortion magnitude values ​​corresponding to different field angles. Figure 30 The 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 optical imaging lens.

[0190] according to Figures 27 to 30 It can be seen that the optical imaging lens provided in Example 6 can achieve good imaging quality.

[0191] Example 7

[0192] like Figures 31 to 35 As shown, the optical imaging lens of Example 7 of the present application is described. Figure 31 A schematic diagram of the optical imaging lens structure of Example 7 is shown.

[0193] like Figure 31 As shown, the optical imaging lens includes, from the object side to the imaging 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.

[0194] The first lens E1 has positive power, with its object-side surface S1 being convex and its imaging-side surface S2 being convex. The second lens E2 has negative power, with its object-side surface S3 being convex and its imaging-side surface S4 being concave. The third lens E3 has positive power, with its object-side surface S5 being convex and its imaging-side surface S6 being concave. The fourth lens E4 has positive power, with its object-side surface S7 being concave and its imaging-side surface S8 being convex. The fifth lens E5 has negative power, with its object-side surface S9 being concave and its imaging-side surface S10 being convex. The filter E6 has an object-side surface S11 and an imaging-side surface S12. Light from an object sequentially passes through surfaces S1 to S12 and is ultimately imaged on imaging surface S13.

[0195] In this example, the total effective focal length f of the optical imaging lens is 11.99 mm, the maximum half field of view Semi-FOV of the optical imaging lens is 16.02°, the total length TTL of the optical imaging lens is 11.47 mm, and the image height ImgH is 3.53 mm.

[0196] Table 13 shows the basic structural parameters of the optical imaging lens of Example 7, where the units of curvature radius, thickness / distance, and effective radius are all millimeters (mm).

[0197]

[0198] Table 13

[0199] Table 14 shows the high-order coefficients of each aspheric mirror surface that can be used in Example 7, where the surface shape of each aspheric surface can be defined by formula (1) given in Example 1 above.

[0200]

[0201] Table 14

[0202] Figure 32 The axial chromatic aberration curve of the optical imaging lens of Example 7 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the optical imaging lens. Figure 33 The astigmatism curve of the optical imaging lens of Example 7 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 34 The distortion curve of the optical imaging lens of Example 7 is shown, which represents the distortion magnitude values ​​corresponding to different field angles. Figure 35 The 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 optical imaging lens.

[0203] according to Figures 32 to 35 It can be seen that the optical imaging lens provided in Example 7 can achieve good imaging quality.

[0204] Example 8

[0205] like Figures 36 to 40 As shown, the optical imaging lens of Example 8 of the present application is described. Figure 36 A schematic diagram of the optical imaging lens structure of Example 8 is shown.

[0206] like Figure 36 As shown, the optical imaging lens includes, from the object side to the imaging 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.

[0207] The first lens E1 has positive power, with its object-side surface S1 being convex and its imaging-side surface S2 being concave. The second lens E2 has negative power, with its object-side surface S3 being convex and its imaging-side surface S4 being concave. The third lens E3 has negative power, with its object-side surface S5 being convex and its imaging-side surface S6 being concave. The fourth lens E4 has negative power, with its object-side surface S7 being convex and its imaging-side surface S8 being concave. The fifth lens E5 has positive power, with its object-side surface S9 being convex and its imaging-side surface S10 being concave. The filter E6 has an object-side surface S11 and an imaging-side surface S12. Light from an object sequentially passes through surfaces S1 to S12 and is ultimately imaged on imaging surface S13.

[0208] In this example, the total effective focal length f of the optical imaging lens is 11.99 mm, the maximum half field of view Semi-FOV of the optical imaging lens is 16.03°, the total length TTL of the optical imaging lens is 11.96 mm, and the image height ImgH is 3.53 mm.

[0209] Table 15 shows the basic structural parameters of the optical imaging lens of Example 8, where the units of curvature radius, thickness / distance, and effective radius are all millimeters (mm).

[0210]

[0211]

[0212] Table 15

[0213] Table 16 shows the high-order coefficients of each aspheric mirror surface that can be used in Example 8, where each aspheric surface shape can be defined by formula (1) given in Example 1 above.

[0214] Face number A4 A6 A8 A10 A12 A14 A16 S1 -3.67E-04 1.68E-04 -9.36E-05 5.49E-05 -2.36E-05 6.21E-06 -9.60E-07 S2 -2.05E-02 2.44E-02 -1.55E-02 6.38E-03 -1.75E-03 3.20E-04 -3.76E-05 S3 -2.42E-02 2.80E-02 -2.95E-02 3.26E-02 -3.19E-02 2.38E-02 -1.29E-02 S4 -4.56E-03 1.21E-03 6.97E-05 -5.31E-04 3.90E-04 -1.24E-04 2.07E-05 S5 7.25E-03 -2.15E-03 2.25E-04 -1.61E-05 9.66E-06 2.77E-05 -1.37E-05 S6 1.06E-02 -1.30E-02 4.52E-02 -1.10E-01 1.82E-01 -2.20E-01 1.96E-01 S7 -1.21E-02 -8.31E-03 7.34E-02 -2.26E-01 4.38E-01 -5.80E-01 5.44E-01 S8 2.38E-02 -2.69E-02 -1.17E-01 4.93E-01 -9.77E-01 1.24E+00 -1.09E+00 S9 -8.36E-02 6.01E-02 -1.29E-01 1.94E-01 -1.71E-01 5.62E-02 5.50E-02 S10 -2.26E-02 2.35E-03 -3.39E-03 7.11E-03 -8.55E-03 6.70E-03 -3.63E-03 Face number A18 A20 A22 A24 A26 A28 A30 S1 7.81E-08 -2.48E-09 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S2 2.58E-06 -7.90E-08 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S3 5.05E-03 -1.43E-03 2.91E-04 -4.13E-05 3.88E-06 -2.17E-07 5.48E-09 S4 -1.68E-06 4.38E-08 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S5 2.39E-06 -1.48E-07 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 S6 -1.29E-01 6.16E-02 -2.11E-02 5.05E-03 -7.96E-04 7.44E-05 -3.12E-06 S7 -3.65E-01 1.76E-01 -6.04E-02 1.44E-02 -2.26E-03 2.10E-04 -8.76E-06 S8 6.82E-01 -3.06E-01 9.81E-02 -2.19E-02 3.22E-03 -2.81E-04 1.10E-05 S9 -8.76E-02 6.01E-02 -2.52E-02 6.87E-03 -1.19E-03 1.19E-04 -5.28E-06 S10 1.39E-03 -3.85E-04 7.58E-05 -1.04E-05 9.53E-07 -5.19E-08 1.28E-09

[0215] Table 16

[0216] Figure 37 The axial chromatic aberration curve of the optical imaging lens of Example 8 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the optical imaging lens. Figure 38 The astigmatism curve of the optical imaging lens of Example 8 is shown, which represents meridional field curvature and sagittal field curvature. Figure 39 The distortion curve of the optical imaging lens of Example 8 is shown, which represents the distortion magnitude values ​​corresponding to different field angles. Figure 40 The 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 optical imaging lens.

[0217] according to Figures 37 to 40 It can be seen that the optical imaging lens provided in Example 8 can achieve good imaging quality.

[0218] In summary, Examples 1 to 8 respectively satisfy the relationships shown in Table 17.

[0219]

[0220]

[0221] Table 17 Table 18 shows the effective focal length f of the optical imaging lenses of Examples 1 to 8, and the effective focal lengths f1 to f5 of each lens.

[0222] Optical parameters / examples one two three Four five six seven eight TTL(mm) 11.86 11.69 12.00 11.53 12.00 11.46 11.47 11.96 ImgH(mm) 3.53 3.53 3.53 3.53 3.53 3.53 3.53 3.53 Semi-FOV(°) 16.09 16.10 16.02 16.06 16.03 16.05 16.02 16.03 Fno 2.40 2.40 2.40 2.40 2.40 2.40 2.40 2.40 f(mm) 12.19 12.00 11.99 11.99 11.99 11.99 11.99 11.99 f1(mm) 6.66 5.37 5.68 5.69 7.78 5.78 5.79 7.00 f2(mm) -10.98 -7.98 -8.70 -7.91 -16.58 -8.44 -8.45 -12.70 f3(mm) 31.03 -41.58 12.63 -21.11 -139.03 -430.57 394.24 -123.94 f4(mm) 29.71 17.08 26.53 9.40 -10.90 13.11 11.63 -15.44 f5(mm) -12.25 -15.61 -8.71 -11.90 12.30 -10.08 -9.69 19.06

[0223] Table 18

[0224] The present application also provides an imaging device, wherein the electronic photosensitive element thereof may be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS). The imaging device may be a standalone imaging device such as a digital camera, or an imaging module integrated into a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens described above.

[0225] Obviously, the embodiments described above are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0226] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0227] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0228] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. An optical imaging lens, characterized in that: The optical imaging lens has a total of five lenses with optical power, and the five lenses with optical power are as follows from the object side to the imaging side: a first lens having positive power and a convex object-side surface; a second lens having negative optical power and a concave imaging side surface, wherein the object side surface of the second lens is convex; a third lens having optical power; a fourth lens having optical power; a fifth lens having optical power; The effective focal length f1 of the first lens, the effective focal length f of the optical imaging lens, and the entrance pupil diameter EPD of the optical imaging lens satisfy the following relationship: 8.69 mm²≤(f1+f)*EPD / 10≤9.88 mm²; The distance TTL from the object side of the first lens to the imaging plane on the optical axis, half the diagonal length of the effective pixel area on the imaging plane ImgH, and the aperture number FNO of the optical imaging lens satisfy the following relationship: 7.78≤TTL / ImgH*FNO≤8.15; The center thickness CT1 of the first lens, the air gap T12 between the first lens and the second lens on the optical axis, the center thickness CT2 of the second lens and the air gap T23 between the second lens and the third lens on the optical axis satisfy the following: 0.50≤(CT1+T12) / (CT2+T23)≤0.

83.

2. The optical imaging lens according to claim 1, wherein: The combined focal length f2345 of the second lens, the third lens, the fourth lens, and the fifth lens and the combined focal length f12 of the first lens and the second lens satisfy the following: 0.50≤|f2345 / f12|≤0.

82.

3. The optical imaging lens according to claim 1, wherein: The combined focal length f12 of the first lens and the second lens and the effective focal length f1 of the first lens satisfy: 1.6 <f12 / f1≤2.10。 4. The optical imaging lens according to claim 1, wherein: The effective focal length f of the optical imaging lens and the combined focal length f2345 of the second lens, the third lens, the fourth lens, and the fifth lens satisfy the following: 1.16≤|f / f2345|≤2.

02.

5. The optical imaging lens according to claim 1, wherein: The curvature radius R4 of the imaging side of the second lens, the curvature radius R6 of the imaging side of the third lens and the curvature radius R7 of the object side of the fourth lens satisfy: -0.5m -1 <R7 / (R6*R4)≤0.45m -1 .

6. The optical imaging lens according to claim 1, wherein: The curvature radius R1 of the object side of the first lens, the curvature radius R6 of the imaging side of the third lens, and the curvature radius R7 of the object side of the fourth lens satisfy the following relationship: 0.90≤|R1 / R6|+|R1 / R7|<1.

9.

7. The optical imaging lens according to claim 1, wherein: The sum ΣCT of the center thickness of each lens from the first lens to the fifth lens and the distance BFL from the imaging side surface to the imaging plane on the optical axis of the fifth lens satisfy the following: 1.10≤ΣCT / BFL≤1.

53.

8. The optical imaging lens according to claim 1, wherein: The center thickness CT1 of the first lens, the center thickness CT3 of the third lens, the center thickness CT4 of the fourth lens, the center thickness CT2 of the second lens and the center thickness CT5 of the fifth lens satisfy: 1.87≤(CT1+CT3+CT4) / (CT2+CT5)≤3.

51.

9. The optical imaging lens according to claim 1, wherein: The distance BFL from the imaging side surface to the imaging surface of the fifth lens on the optical axis, the sum ∑AT of the air gaps on the optical axis between adjacent lenses from the first lens to the fifth lens, and the edge thickness ET2 at the maximum effective radius of the second lens satisfy the following: -0.1<(BFL-∑AT) / ET2<2.

1.

10. The optical imaging lens according to claim 1, wherein: The distance TD on the optical axis from the object side of the first lens to the imaging side of the fifth lens, the center thickness CT1 of the first lens and the center thickness CT5 of the fifth lens satisfy the following conditions: 2.8 <TD / (CT1+CT5)<4.0。 11. The optical imaging lens according to claim 1, wherein: The maximum effective radius DT11 of the object side of the first lens, the maximum effective radius DT12 of the imaging side of the first lens, and the maximum effective radius DT51 of the object side of the fifth lens satisfy the following: 2.15≤(DT11+DT12) / DT51≤2.

60.

12. The optical imaging lens according to claim 1, wherein: The maximum effective radius DT22 of the imaging side surface of the second lens and the maximum effective radius DT32 of the imaging side surface of the third lens satisfy the following: 1.95≤|(DT22+DT32) / DT32|≤2.

21.

13. The optical imaging lens according to claim 1, wherein: The on-axis distance SAG12 between the intersection of the imaging side of the first lens and the optical axis to the effective radius vertex of the imaging side of the first lens and the on-axis distance SAG21 between the intersection of the object side of the second lens and the optical axis to the effective radius vertex of the object side of the second lens satisfies: 0.17≤|SAG12 / SAG21|≤0.

63.

14. The optical imaging lens according to claim 1, wherein: The on-axis distance SAG31 between the intersection of the object side surface of the third lens and the optical axis to the effective radius vertex of the object side surface of the third lens, the on-axis distance SAG32 between the intersection of the imaging side surface of the third lens and the optical axis to the effective radius vertex of the imaging side surface of the third 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 satisfy the following: -0.5<(SAG31-SAG32) / SAG51<0.

5.

15. The optical imaging lens according to claim 1, wherein: The center thickness CT1 of the first lens, the center thickness CT4 of the fourth lens, the edge thickness ET1 at the maximum effective radius of the first lens, and the edge thickness ET4 at the maximum effective radius of the fourth lens satisfy the following: 0.38≤(ET1+ET4) / (CT1+CT4)<0.7.

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