Optical imaging lens

Abstract

The present application discloses an optical imaging lens, which sequentially includes, from the object side to the image side along the optical axis: a first lens with negative optical power, whose object side is concave and image side is convex; a second lens with optical power; a diaphragm; a third lens with optical power, whose object side is convex and image side is convex; a fourth lens with optical power; and a fifth lens with optical power. Half of the maximum field of view of the optical imaging lens, Semi-FOV, satisfies: Semi-FOV ≥ 55°. The distance SAG11 on the optical axis from the intersection of the object side of the first lens and the optical axis to the vertex of the effective radius of the object side of the first lens and the distance SAG42 on the optical axis from the intersection of the image side of the fourth lens and the optical axis to the vertex of the effective radius of the image side of the fourth lens satisfy: -2.5 < SAG42 / SAG11 < -1.0.

Description

Technical Field

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

[0002] With the rapid renewal of portable electronic products such as smart phones, current smart phones, compared with traditional mobile phones, not only have the function of making calls, but also have become entertainment devices carried by people. The shooting function of smart phones has obviously become one of the main innovations in the renewal of smart phones. At the same time, users' performance requirements for the pixels, imaging quality, resolution, etc. of mobile phone imaging lenses are also getting higher and higher.

[0003] In order to meet users' various photography needs, how to make the optical imaging lens applied to smart phones have a relatively large clear imaging range to increase the appeal of the picture on the basis of having good imaging quality, a large field of view angle, a long depth of field, etc. is one of the difficult problems that many lens designers need to solve urgently at present. Summary of the Invention

[0004] This application provides such an optical imaging lens. The optical imaging lens sequentially includes, from the object side to the image side along the optical axis: a first lens with a negative optical power, whose object side is concave and image side is convex; a second lens with an optical power; a diaphragm; a third lens with an optical power, whose object side is convex and image side is convex; a fourth lens with an optical power; and a fifth lens with an optical power. Half of the maximum field of view angle Semi-FOV of the optical imaging lens can satisfy: Semi-FOV≥55°. The distance SAG11 from the intersection of the object side of the first lens and the optical axis to the vertex of the effective radius of the object side of the first lens on the optical axis and the distance SAG42 from the intersection of the image side of the fourth lens and the optical axis to the vertex of the effective radius of the image side of the fourth lens on the optical axis can satisfy: -2.5<SAG42 / SAG11<-1.0.

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

[0006] In one embodiment, the total effective focal length f of the optical imaging lens and the effective focal length f1 of the first lens can satisfy: -4.0<f1 / f<-2.0.

[0007] In one embodiment, the effective focal length f3 of the third lens, the effective focal length f4 of the fourth lens, and the effective focal length f5 of the fifth lens can satisfy: -2.5<(f3 + f4) / f5<-2.0.

[0008] In one embodiment, the edge thickness ET1 of the first lens and the central thickness CT1 of the first lens on the optical axis may satisfy: 1.0 < ET1 / CT1 < 1.5.

[0009] In one embodiment, the edge thickness ET4 of the fourth lens and the central thickness CT4 of the fourth lens on the optical axis may satisfy: 2.5 < CT4 / ET4 < 3.5.

[0010] In one embodiment, the maximum effective radius DT31 of the object side surface of the third lens and the distance SAG32 on the optical axis from the intersection of the image side surface of the third lens and the optical axis to the effective radius vertex of the image side surface of the third lens may satisfy: -3.5 < DT31 / SAG32 < -2.5.

[0011] In one embodiment, the curvature radius R8 of the image side surface of the fourth lens and the curvature radius R10 of the image side surface of the fifth lens may satisfy: -2.0 < R8 / R10 < -0.8.

[0012] In one embodiment, the curvature radius R5 of the object side surface of the third lens and the curvature radius R6 of the image side surface of the third lens may satisfy: -19.5 < R5 / R6 < -4.5.

[0013] In one embodiment, the central thickness CT2 of the second lens on the optical axis and the central thickness CT3 of the third lens on the optical axis may satisfy: 1.0 < CT3 / CT2 < 2.5.

[0014] In one embodiment, the curvature radius R1 of the object side surface of the first lens and the curvature radius R2 of the image side surface of the first lens may satisfy: 1.5 < R2 / R1 < 4.5.

[0015] In one embodiment, the spacing distance between the third lens and the fourth lens on the optical axis is greater than the spacing distance between any two adjacent lenses from the first lens to the fifth lens on the optical axis.

[0016] In one embodiment, the spacing distance between the fourth lens and the fifth lens on the optical axis is less than the spacing distance between any two adjacent lenses from the first lens to the fifth lens on the optical axis.

[0017] In one embodiment, half of the diagonal length ImgH of the effective pixel region on the imaging surface of the optical imaging lens and the total effective focal length f of the optical imaging lens may satisfy: 1.0 < ImgH / f < 1.5.

[0018] In one embodiment, the distance SL from the aperture stop to the imaging surface of the optical imaging lens on the optical axis and the distance TLL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis may satisfy: 1.0 < TTL / SL < 1.5.

[0019] On the other hand, the present application provides an optical imaging lens. The optical imaging lens sequentially includes, from the object side to the image side along the optical axis: a first lens with a negative optical power, whose object side is concave and image side is convex; a second lens with an optical power; a diaphragm; a third lens with an optical power, whose object side is convex and image side is convex; a fourth lens with an optical power; and a fifth lens with an optical power. Half of the maximum field of view of the optical imaging lens, Semi-FOV, satisfies: Semi-FOV ≥ 55°. The effective focal length f3 of the third lens, the effective focal length f4 of the fourth lens, and the effective focal length f5 of the fifth lens satisfy: -2.5 < (f3 + f4) / f5 < -2.0.

[0020] In one embodiment, the total effective focal length f of the optical imaging lens and the effective focal length f1 of the first lens satisfy: -4.0 < f1 / f < -2.0.

[0021] In one embodiment, the edge thickness ET1 of the first lens and the central thickness CT1 of the first lens on the optical axis satisfy: 1.0 < ET1 / CT1 < 1.5.

[0022] In one embodiment, the edge thickness ET4 of the fourth lens and the central thickness CT4 of the fourth lens on the optical axis satisfy: 2.5 < CT4 / ET4 < 3.5.

[0023] In one embodiment, the maximum effective radius DT31 of the object side of the third lens and the distance SAG32 on the optical axis from the intersection of the image side of the third lens and the optical axis to the effective radius vertex of the image side of the third lens satisfy: -3.5 < DT31 / SAG32 < -2.5.

[0024] In one embodiment, the radius of curvature R8 of the image side of the fourth lens and the radius of curvature R10 of the image side of the fifth lens satisfy: -2.0 < R8 / R10 < -0.8.

[0025] In one embodiment, the radius of curvature R5 of the object side of the third lens and the radius of curvature R6 of the image side of the third lens satisfy: -19.5 < R5 / R6 < -4.5.

[0026] In one embodiment, the central thickness CT2 of the second lens on the optical axis and the central thickness CT3 of the third lens on the optical axis satisfy: 1.0 < CT3 / CT2 < 2.5.

[0027] In one embodiment, the radius of curvature R1 of the object side of the first lens and the radius of curvature R2 of the image side of the first lens satisfy: 1.5 < R2 / R1 < 4.5.

[0028] In one embodiment, the distance SAG11 from the intersection of the object side surface of the first lens and the optical axis to the vertex of the effective radius of the object side surface of the first lens on the optical axis and the distance SAG42 from the intersection of the image side surface of the fourth lens and the optical axis to the vertex of the effective radius of the image side surface of the fourth lens on the optical axis satisfy: -2.5 < SAG42 / SAG11 < -1.0.

[0029] In one embodiment, the axial spacing distance between the third lens and the fourth lens is greater than the axial spacing distance between any two adjacent lenses from the first lens to the fifth lens.

[0030] In one embodiment, the axial spacing distance between the fourth lens and the fifth lens is less than the axial spacing distance between any two adjacent lenses from the first lens to the fifth lens.

[0031] In one embodiment, half of the diagonal length ImgH of the effective pixel region on the imaging surface of the optical imaging lens and the total effective focal length f of the optical imaging lens satisfy: 1.0 < ImgH / f < 1.5.

[0032] In one embodiment, the distance SL from the aperture stop to the imaging surface of the optical imaging lens on the optical axis and the distance TLL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis satisfy: 1.0 < TTL / SL < 1.5.

[0033] This application uses multiple (e.g., five) lenses. By reasonably distributing the optical power, surface shape, central thickness of each lens, and the axial spacing between each lens, etc., the above optical imaging lens has at least one beneficial effect such as wide angle, long focal length, large image surface, and high imaging quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Other features, objectives, and advantages of this application will become more apparent by reading the detailed description of the non-limiting embodiments with reference to the following drawings:

[0035] Figure 1 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 1 of this application;

[0036] Figures 2A to 2D Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Embodiment 1;

[0037] Figure 3 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 2 of this application;

[0038] Figures 4A to 4D Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Embodiment 2;

[0039] Figure 5 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 3 of the present application;

[0040] Figures 6A to 6D Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and longitudinal chromatic aberration curve of the optical imaging lens of Embodiment 3;

[0041] Figure 7 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 4 of the present application;

[0042] Figures 8A to 8D Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and longitudinal chromatic aberration curve of the optical imaging lens of Embodiment 4;

[0043] Figure 9 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 5 of the present application;

[0044] Figures 10A to 10D Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and longitudinal chromatic aberration curve of the optical imaging lens of Embodiment 5;

[0045] Figure 11 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 6 of the present application; and

[0046] Figures 12A to 12D Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and longitudinal chromatic aberration curve of the optical imaging lens of Embodiment 6. Detailed implementation manners

[0047] To better understand the present application, more detailed descriptions of various aspects of the present application will be made 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 do not 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.

[0048] It should be noted that in this specification, the expressions such as first, second, and third are only used to distinguish one feature from another feature and do not represent any limitation on the feature. Therefore, without departing from the teachings of the present application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0049] In the drawings, for the sake of illustration, the thickness, dimensions, and shape of the lens have been slightly exaggerated. Specifically, the spherical or aspherical shapes shown in the drawings are presented by way of example. That is, the spherical or aspherical shapes are not limited to those shown in the drawings. The drawings are for illustrative purposes only and are not drawn to an exact scale.

[0050] In this document, 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 being photographed is called the object side surface of the lens, and the surface of each lens closest to the imaging surface is called the image side surface of the lens.

[0051] It should also be understood that the terms "comprise", "comprising", "have", "including", and / or "containing", when used in this specification, denote the presence of the stated features, elements, and / or components, but do not preclude the presence or addition of one or more other features, elements, components, and / or combinations thereof. In addition, when an expression such as "at least one of..." appears after a list of listed features, it modifies the entire list of listed features, rather than an individual element in the list. In addition, when describing the embodiments of the present application, the use of "may" means "one or more embodiments of the present application". And the term "exemplary" is intended to refer to an example or illustration.

[0052] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It should also be understood that terms (such as those defined in a common dictionary) should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0053] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0054] The features, principles, and other aspects of the present application are described in detail below.

[0055] According to an exemplary embodiment of the present application, an optical imaging lens may include five lenses having optical power, namely, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. These five lenses are arranged in sequence along the optical axis from the object side to the image side. There may be a spacing distance between any two adjacent lenses among the first lens to the fifth lens.

[0056] In an exemplary embodiment, the first lens may have a negative optical power, its object side may be concave, and its image side may be convex; the second lens may have a positive optical power or a negative optical power; the third lens may have a positive optical power or a negative optical power, its object side may be convex, and its image side may be convex; the fourth lens may have a positive optical power or a negative optical power; and the fifth lens may have a positive optical power or a negative optical power.

[0057] In an exemplary embodiment, by reasonably setting the optical power and surface type characteristics of the first lens, it is beneficial to reduce the inclination angle of the incident light, so that the optical imaging lens has characteristics such as a large field of view angle; by reasonably setting the surface type of the third lens, the tolerance sensitivity of the optical imaging lens can be effectively reduced.

[0058] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: Semi-FOV≥55°, where Semi-FOV is half of the maximum field of view angle of the optical imaging lens. Satisfying Semi-FOV≥55° can improve the ability of the optical imaging lens to collect object-side information.

[0059] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: -4.0<f1 / f<-2.0, where f is the total effective focal length of the optical imaging lens, and f1 is the effective focal length of the first lens. More specifically, f1 and f may further satisfy: -4.0<f1 / f<-2.3. Satisfying -4.0<f1 / f<-2.0 can reduce the deflection angle of the light and improve the imaging quality of the optical imaging lens.

[0060] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: -2.5<(f3 + f4) / f5<-2.0, where f3 is the effective focal length of the third lens, f4 is the effective focal length of the fourth lens, and f5 is the effective focal length of the fifth lens. Satisfying -2.5<(f3 + f4) / f5<-2.0 is beneficial to balance the off-axis aberration of the optical imaging lens.

[0061] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1.0<ET1 / CT1<1.5, where ET1 is the edge thickness of the first lens, and CT1 is the central thickness of the first lens on the optical axis. Satisfying 1.0<ET1 / CT1<1.5 can not only make the first lens have good processability, but also balance the distortion influence amount of the optical imaging lens, thus being beneficial to obtaining a better imaging effect.

[0062] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 2.5 < CT4 / ET4 < 3.5, where ET4 is the edge thickness of the fourth lens and CT4 is the central thickness of the fourth lens on the optical axis. More specifically, CT4 and ET4 may further satisfy: 2.8 < CT4 / ET4 < 3.1. Satisfying 2.5 < CT4 / ET4 < 3.5 can enable the fourth lens to have good processability and is conducive to ensuring better imaging quality.

[0063] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: -3.5 < DT31 / SAG32 < -2.5, where DT31 is the maximum effective radius of the object side surface of the third lens and SAG32 is the distance on the optical axis from the intersection of the image side surface of the third lens and the optical axis to the vertex of the effective radius of the image side surface of the third lens. More specifically, DT31 and SAG32 may further satisfy: -3.4 < DT31 / SAG32 < -2.5. Satisfying -3.5 < DT31 / SAG32 < -2.5 is conducive to making the assembly of the optical imaging lens more stable.

[0064] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: -2.5 < SAG42 / SAG11 < -1.0, where SAG11 is the distance on the optical axis from the intersection of the object side surface of the first lens and the optical axis to the vertex of the effective radius of the object side surface of the first lens, and SAG42 is the distance on the optical axis from the intersection of the image side surface of the fourth lens and the optical axis to the vertex of the effective radius of the image side surface of the fourth lens. More specifically, SAG42 and SAG11 may further satisfy: -2.2 < SAG42 / SAG11 < -1.3. Satisfying -2.5 < SAG42 / SAG11 < -1.0 is conducive to improving the relative illumination of the off-axis field of view.

[0065] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: -2.0 < R8 / R10 < -0.8, where R8 is the radius of curvature of the image side surface of the fourth lens and R10 is the radius of curvature of the image side surface of the fifth lens. More specifically, R8 and R10 may further satisfy: -1.7 < R8 / R10 < -0.8. Satisfying -2.0 < R8 / R10 < -0.8 is conducive to reasonably controlling the total deflection angle of the edge field of view on the image side surfaces of the fourth lens and the fifth lens within a reasonable range, and can effectively reduce the sensitivity of the lens.

[0066] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: -19.5 < R5 / R6 < -4.5, where R5 is the curvature radius of the object side surface of the third lens, and R6 is the curvature radius of the image side surface of the third lens. More specifically, R5 and R6 may further satisfy: -19.5 < R5 / R6 < -4.8. Satisfying -19.5 < R5 / R6 < -4.5 can reasonably control the contribution of the third lens to the astigmatism of the optical imaging lens.

[0067] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1.0 < CT3 / CT2 < 2.5, where CT2 is the central thickness of the second lens on the optical axis, and CT3 is the central thickness of the third lens on the optical axis. More specifically, CT3 and CT2 may further satisfy: 1.2 < CT3 / CT2 < 2.2. Satisfying 1.0 < CT3 / CT2 < 2.5 can make the lens easy to injection mold and improve the processability of the optical imaging lens.

[0068] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1.5 < R2 / R1 < 4.5, where R1 is the curvature radius of the object side surface of the first lens, and R2 is the curvature radius of the image side surface of the first lens. More specifically, R2 and R1 may further satisfy: 1.7 < R2 / R1 < 4.2. Satisfying 1.5 < R2 / R1 < 4.5 can control the contribution of the first lens to the astigmatism of the optical imaging lens.

[0069] In an exemplary embodiment, the spacing distance between the third lens and the fourth lens on the optical axis may be greater than the spacing distance between any two adjacent lenses among the first lens to the fifth lens on the optical axis. More specifically, the spacing distance T34 between the third lens and the fourth lens on the optical axis may be greater than the spacing distance T12 between the first lens and the second lens on the optical axis. The spacing distance T34 between the third lens and the fourth lens on the optical axis may be greater than the spacing distance T23 between the second lens and the third lens on the optical axis. The spacing distance T34 between the third lens and the fourth lens on the optical axis may be greater than the spacing distance T45 between the fourth lens and the fifth lens on the optical axis. Further, T34 may satisfy: 0.55 mm < T34 < 0.75 mm; T12 may satisfy: 0.41 mm < T12 < 0.67 mm; T23 may satisfy: 0.34 mm < T23 < 0.41 mm; T45 may satisfy: 0.02 mm < T45 < 0.07 mm. The spacing distance between the third lens and the fourth lens on the optical axis being greater than the spacing distance between any two adjacent lenses among the first lens to the fifth lens on the optical axis is beneficial to correcting the spherical aberration of the optical imaging lens.

[0070] In an exemplary embodiment, the distance between the fourth lens and the fifth lens on the optical axis may be less than the distance between any two adjacent lenses among the first lens to the fifth lens on the optical axis. More specifically, the distance T45 between the fourth lens and the fifth lens on the optical axis may be less than the distance T12 between the first lens and the second lens on the optical axis. The distance T45 between the fourth lens and the fifth lens on the optical axis may be less than the distance T23 between the second lens and the third lens on the optical axis. The distance T45 between the fourth lens and the fifth lens on the optical axis may be less than the distance T34 between the third lens and the fourth lens on the optical axis. Further, T45 may satisfy: 0.02 mm < T45 < 0.07 mm; T12 may satisfy: 0.41 mm < T12 < 0.67 mm; T23 may satisfy: 0.34 mm < T23 < 0.41 mm; T34 may satisfy: 0.55 mm < T34 < 0.75 mm. The distance between the fourth lens and the fifth lens on the optical axis being less than the distance between any two adjacent lenses among the first lens to the fifth lens on the optical axis is beneficial to balancing the astigmatism of the optical imaging lens.

[0071] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1.0 < ImgH / f < 1.5, where ImgH is half of the diagonal length of the effective pixel region on the imaging surface of the optical imaging lens, and f is the total effective focal length of the optical imaging lens. More specifically, ImgH and f may further satisfy: 1.1 < ImgH / f < 1.4. Satisfying 1.0 < ImgH / f < 1.5 can effectively control the field of view size of the optical imaging lens.

[0072] In an exemplary embodiment, the optical imaging lens according to the present application further includes a diaphragm disposed between the second lens and the third lens. Optionally, the above optical imaging lens may further include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging surface.

[0073] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1.0 < TTL / SL < 1.5, where SL is the distance from the diaphragm to the imaging surface of the optical imaging lens on the optical axis, and TLL is the distance from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis. More specifically, TTL and SL may further satisfy: 1.3 < TTL / SL < 1.5. Satisfying 1.0 < TTL / SL < 1.5 can effectively correct coma, astigmatism, distortion, axial chromatic aberration, etc. related to the diaphragm.

[0074] The optical imaging lens according to the above-described embodiments of the present application may employ multiple lenses, such as the five lenses described above. By reasonably distributing the optical power, surface shape, central thickness of each lens, and the axial spacing between each lens, etc., 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 applicable to portable electronic products. The optical imaging lens configured as above has characteristics such as wide angle, long focal length, large image plane, high resolution, and good imaging quality, and can well meet the usage requirements of various portable electronic products in the camera scenario.

[0075] In the embodiments of the present application, at least one of the lens surfaces of each lens is an aspherical lens surface, that is, at least one lens surface from the object side surface of the first lens to the image side surface of the fifth lens is an aspherical lens surface. The characteristics of an aspherical lens are that the curvature changes continuously from the center of the lens to the periphery of the lens. Different from a spherical lens with a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has better curvature radius characteristics and has the advantages of improving distortion aberration and improving astigmatism aberration. After using an aspherical lens, it is possible to eliminate as much as possible the aberration that appears during imaging, thereby improving the imaging quality. Optionally, at least one of the object side surface and the image side surface of each of the first lens, the second lens, the third lens, the fourth lens, and the fifth lens is an aspherical lens surface. Optionally, both the object side surface and the image side surface of each of the first lens, the second lens, the third lens, the fourth lens, and the fifth lens are aspherical lens surfaces.

[0076] However, those skilled in the art should understand that without departing from the technical solutions 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.

[0077] The following further describes specific embodiments of the optical imaging lens applicable to the above-described embodiments with reference to the accompanying drawings.

[0078] Example 1

[0079] The following refers to Figures 1 to 2D Describe the optical imaging lens according to Embodiment 1 of the present application. Figure 1 The structural schematic diagram of the optical imaging lens according to Embodiment 1 of the present application is shown.

[0080] As Figure 1As shown, the optical imaging lens sequentially includes, from the object side to the image side: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.

[0081] The first lens E1 has a negative focal power, its object surface S1 is concave, and its image surface S2 is convex. The second lens E2 has a negative focal power, its object surface S3 is convex, and its image surface S4 is concave. The third lens E3 has a positive focal power, its object surface S5 is convex, and its image surface S6 is convex. The fourth lens E4 has a positive focal power, its object surface S7 is convex, and its image surface S8 is convex. The fifth lens E5 has a negative focal power, its object surface S9 is convex, and its image surface S10 is concave. The filter E6 has an object surface S11 and an image surface S12. Light from the object sequentially passes through the surfaces S1 to S12 and finally forms an image on the imaging surface S13.

[0082] Table 1 shows the basic parameter table of the optical imaging lens of Example 1, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm).

[0083]

[0084] Table 1

[0085] In this example, the total effective focal length f of the optical imaging lens is 2.06 mm, the total length TTL of the optical imaging lens (i.e., the distance on the optical axis from the object surface S1 of the first lens E1 to the imaging surface S13 of the optical imaging lens) is 5.50 mm, half of the diagonal length of the effective pixel area on the imaging surface S13 of the optical imaging lens is ImgH = 2.45 mm, half of the maximum field of view angle of the optical imaging lens is Semi-FOV = 56.6°, the aperture value Fno of the optical imaging lens is 2.28, the distance SAG11 on the optical axis from the intersection of the object surface of the first lens and the optical axis to the effective radius vertex of the object surface of the first lens is 0.39 mm, the distance SAG32 on the optical axis from the intersection of the image surface of the third lens and the optical axis to the effective radius vertex of the image surface of the third lens is -0.21 mm, and the distance SAG42 on the optical axis from the intersection of the image surface of the fourth lens and the optical axis to the effective radius vertex of the image surface of the fourth lens is -0.75 mm.

[0086] In Example 1, the object surface and the image surface of any one of the first lens E1 to the fifth lens E5 are aspherical surfaces, and the surface profile x of each aspherical lens can be defined by, but not limited to, the following aspherical formula:

[0087]

[0088] Wherein, x is the sagitta, which is the distance from the vertex of the aspheric surface to the position along the optical axis at a height of h; c is the paraxial curvature of the aspheric surface, c = 1 / R (i.e., the paraxial curvature c is the reciprocal of the radius of curvature R in Table 1 above); k is the conic coefficient; Ai is the correction coefficient of the i-th order of the aspheric surface. Table 2 below gives the higher-order coefficients A4, A6, A8, A 10 , A 12 , A 14 , A 16 , A 18 and A 20 .

[0089] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 1.1477E+00 -1.3700E-01 3.3499E-02 -9.5966E-03 3.0861E-03 -9.3356E-04 3.0556E-04 -9.4339E-05 1.5806E-05 S2 4.4230E-01 -2.7816E-02 2.7434E-04 -1.9627E-03 -2.5310E-05 1.0513E-04 9.3866E-06 1.4702E-05 -7.5805E-06 S3 4.3971E-02 -8.6282E-03 7.9162E-04 -6.7730E-04 1.5007E-04 -7.5404E-05 1.3582E-05 -8.5802E-06 -1.0994E-06 S4 4.4095E-02 5.1604E-03 1.7711E-03 3.0517E-04 1.8812E-04 2.4532E-05 2.0336E-05 -3.2520E-06 -2.8880E-06 S5 1.3878E-03 6.9052E-04 8.3360E-05 -2.9940E-09 -9.1729E-06 -3.9561E-06 0.0000E+00 0.0000E+00 0.0000E+00 S6 -1.1656E-01 2.0122E-02 -7.6763E-03 -6.6863E-03 -1.5523E-03 1.6686E-03 1.8203E-03 8.4637E-04 1.8453E-04 S7 -3.5872E-02 -3.9591E-02 1.9851E-03 4.4433E-03 3.5418E-03 8.0369E-04 -1.5877E-05 -2.3317E-04 -1.0936E-04 S8 4.6679E-02 -4.0859E-02 -2.6291E-03 1.0025E-02 7.4730E-03 1.0396E-03 7.4805E-04 -2.5558E-04 7.5285E-06 S9 -1.1622E+00 1.5976E-01 -8.8260E-03 9.8151E-03 2.9942E-03 -1.8951E-03 8.8456E-05 -3.9127E-04 1.3632E-04 S10 -2.2786E+00 4.8217E-01 -1.3627E-01 5.4234E-02 -1.9334E-02 5.5383E-03 -2.7466E-03 6.5674E-04 -2.6247E-04

[0090] Table 2

[0091] Figure 2A shows the axial chromatic aberration curve of the optical imaging lens of Example 1, which represents the deviation of the convergence points of light rays of different wavelengths after passing through the lens. Figure 2B shows the astigmatism curve of the optical imaging lens of Example 1, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 2C shows the distortion curve of the optical imaging lens of Example 1, which represents the distortion magnitude values corresponding to different image heights. Figure 2D shows the lateral chromatic aberration curve of the optical imaging lens of Example 1, which represents the deviation of different image heights on the imaging plane after the light rays pass through the lens. According to Figures 2A to 2D It can be seen that the optical imaging lens given in Example 1 can achieve good imaging quality.

[0092] Example 2

[0093] The following will refer to Figures 3 to 4D to describe the optical imaging lens according to Embodiment 2 of the present application. In this embodiment and the following embodiments, for the sake of simplicity, some descriptions similar to those in Example 1 will be omitted. Figure 3 shows a schematic structural diagram of the optical imaging lens according to Embodiment 2 of the present application.

[0094] As Figure 3 shown, the optical imaging lens sequentially includes, from the object side to the image side: a first lens E1, a second lens E2, a diaphragm STO, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.

[0095] The first lens E1 has a negative optical power, its object side S1 is concave, and its image side S2 is convex. The second lens E2 has a positive optical power, its object side S3 is convex, and its image side S4 is concave. The third lens E3 has a positive optical power, its object side S5 is convex, and its image side S6 is convex. The fourth lens E4 has a positive optical power, its object side S7 is convex, and its image side S8 is convex. The fifth lens E5 has a negative optical power, its object side S9 is convex, and its image side S10 is concave. The filter E6 has an object side S11 and an image side S12. The light from the object sequentially passes through the surfaces S1 to S12 and finally forms an image on the imaging surface S13.

[0096] In this example, the total effective focal length f of the optical imaging lens is 1.90 mm, the total length TTL of the optical imaging lens is 5.54 mm, half of the diagonal length of the effective pixel area on the imaging surface S13 of the optical imaging lens is ImgH = 2.45 mm, half of the maximum field of view angle of the optical imaging lens is Semi - FOV = 58.7°, the aperture value Fno of the optical imaging lens is 2.19, the distance SAG11 on the optical axis from the intersection of the object side of the first lens and the optical axis to the vertex of the effective radius of the object side of the first lens is 0.36 mm, the distance SAG32 on the optical axis from the intersection of the image side of the third lens and the optical axis to the vertex of the effective radius of the image side of the third lens is - 0.19 mm, and the distance SAG42 on the optical axis from the intersection of the image side of the fourth lens and the optical axis to the vertex of the effective radius of the image side of the fourth lens is - 0.79 mm.

[0097] Table 3 shows the basic parameter table of the optical imaging lens of Example 2, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm). Table 4 shows the higher - order term coefficients available for each aspherical mirror surface in Example 2, where each aspherical surface type can be defined by the formula (1) given in the above Example 1.

[0098]

[0099] Table 3

[0100] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 1.9423E+00 -2.2051E-01 8.6053E-02 -1.1588E-02 1.0673E-02 -2.5119E-03 1.2451E-03 -2.1093E-04 2.0959E-04 S2 6.5603E-01 -5.2474E-02 -7.4400E-03 -3.3172E-03 2.2893E-03 1.1094E-03 -2.2568E-04 -2.3982E-04 -1.6326E-04 S3 1.3448E-01 -5.5902E-03 -6.1471E-03 -2.4615E-03 -3.7992E-04 -1.4502E-05 5.7307E-05 1.0311E-05 -5.1447E-06 S4 1.0650E-01 1.0216E-02 5.5747E-04 -5.8016E-04 -2.9296E-04 -1.4257E-04 -2.4042E-05 -1.4619E-05 -2.5761E-06 S5 1.3772E-02 1.2318E-03 1.0111E-04 9.6382E-06 -3.0600E-06 1.0873E-06 0.0000E+00 0.0000E+00 0.0000E+00 S6 -5.7144E-02 7.2752E-03 6.4074E-04 3.5962E-04 6.5525E-05 3.9703E-06 8.8369E-06 -2.7899E-06 4.4384E-06 S7 2.6731E-02 -3.0841E-02 -2.8684E-03 -5.0974E-04 8.6969E-04 3.7178E-04 2.0723E-04 3.9452E-05 3.0984E-06 S8 1.2917E-01 -3.1665E-02 -6.3935E-03 6.3979E-03 2.1524E-03 1.8130E-03 2.7409E-04 1.0132E-05 -7.5577E-06 S9 -1.1649E+00 2.1187E-01 2.0056E-02 8.3055E-03 -9.5217E-03 -1.5837E-03 4.2479E-04 5.3893E-04 4.5649E-04 S10 -2.0577E+00 4.0667E-01 -9.7901E-02 4.6773E-02 -1.5576E-02 5.2595E-03 -2.9274E-03 5.7840E-04 -4.1488E-04

[0101] Table 4

[0102] Figure 4A Shows the axial chromatic aberration curve of the optical imaging lens of Example 2, which represents the deviation of the convergence points of light rays of different wavelengths after passing through the lens. Figure 4B Shows the astigmatism curve of the optical imaging lens of Example 2, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 4C Shows the distortion curve of the optical imaging lens of Example 2, which represents the distortion magnitude values corresponding to different image heights. Figure 4DThe longitudinal chromatic aberration curve of the optical imaging lens of Embodiment 2 is shown, which represents the deviation of different image heights on the imaging surface after light passes through the lens. According to Figures 4A to 4D it can be seen that the optical imaging lens given in Embodiment 2 can achieve good imaging quality.

[0103] Example 3

[0104] The following refers to Figures 5 to 6D and describes the optical imaging lens according to Embodiment 3 of the present application. Figure 5 The structural schematic diagram of the optical imaging lens according to Embodiment 3 of the present application is shown.

[0105] As Figure 5 shown, the optical imaging lens sequentially includes, from the object side to the image side: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.

[0106] The first lens E1 has a negative focal power, its object side surface S1 is concave, and its image side surface S2 is convex. The second lens E2 has a negative focal power, its object side surface S3 is concave, and its image side surface S4 is convex. The third lens E3 has a positive focal power, its object side surface S5 is convex, and its image side surface S6 is convex. The fourth lens E4 has a positive focal power, its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has a negative focal power, 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. Light from the object sequentially passes through the surfaces S1 to S12 and finally forms an image on the imaging surface S13.

[0107] In this example, the total effective focal length f of the optical imaging lens is 2.05 mm, the total length TTL of the optical imaging lens is 5.80 mm, half of the diagonal length of the effective pixel area on the imaging surface S13 of the optical imaging lens is ImgH = 2.45 mm, half of the maximum field of view angle of the optical imaging lens is Semi-FOV = 56.1°, the aperture value Fno of the optical imaging lens is 2.15, the distance SAG11 from the intersection of the object side surface of the first lens and the optical axis to the vertex of the effective radius of the object side surface of the first lens on the optical axis is 0.36 mm, the distance SAG32 from the intersection of the image side surface of the third lens and the optical axis to the vertex of the effective radius of the image side surface of the third lens on the optical axis is -0.20 mm, and the distance SAG42 from the intersection of the image side surface of the fourth lens and the optical axis to the vertex of the effective radius of the image side surface of the fourth lens on the optical axis is -0.75 mm.

[0108] Table 5 shows the basic parameter table of the optical imaging lens of Embodiment 3, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm). Table 6 shows the higher-order term coefficients available for each aspherical mirror surface in Embodiment 3, where each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0109]

[0110]

[0111] Table 5

[0112] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 1.8874E+00 -1.8358E-01 7.4735E-02 -7.0254E-03 9.7974E-03 -1.4512E-03 9.1920E-04 -1.1323E-04 2.0419E-04 S2 5.6971E-01 -2.4512E-02 -1.3442E-02 -3.4247E-03 6.5247E-04 1.6602E-03 2.8458E-05 -8.5878E-05 -1.7070E-04 S3 1.7107E-01 -1.7947E-02 -4.9291E-03 -1.4005E-03 3.8892E-04 7.0658E-05 4.3184E-05 -2.2225E-05 -7.1615E-06 S4 1.2926E-01 5.3407E-03 -2.8441E-04 -4.8981E-04 -1.4555E-05 -6.5262E-06 1.9943E-05 -1.7038E-06 0.0000E+00 S5 2.1160E-02 6.9126E-04 5.3399E-05 8.4702E-06 -1.7188E-06 1.3181E-06 0.0000E+00 0.0000E+00 0.0000E+00 S6 -6.0849E-02 1.0883E-02 5.3949E-04 5.7989E-04 6.7186E-05 2.0960E-05 7.7842E-06 -2.8129E-06 5.5437E-06 S7 5.1580E-02 -3.6068E-02 -4.3864E-03 -1.0998E-03 8.0405E-04 4.7552E-04 2.9807E-04 8.1632E-05 1.8206E-05 S8 1.0199E-01 -3.4128E-02 -9.1213E-03 8.5692E-03 1.9810E-03 3.0906E-03 1.0141E-04 3.7155E-04 -1.7774E-04 S9 -1.0147E+00 1.4435E-01 6.3038E-03 1.4966E-02 -4.1569E-03 -3.9132E-06 -1.0440E-03 3.9239E-05 -9.8815E-05 S10 -1.8299E+00 3.6780E-01 -9.7681E-02 4.2725E-02 -1.4869E-02 5.7347E-03 -2.7823E-03 9.3875E-04 -5.3070E-04

[0113] Table 6

[0114] Figure 6A shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 3, which represents the deviation of the convergence points of light rays of different wavelengths after passing through the lens. Figure 6B shows the astigmatism curve of the optical imaging lens of Embodiment 3, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 6C shows the distortion curve of the optical imaging lens of Embodiment 3, which represents the distortion magnitude values corresponding to different image heights. Figure 6D shows the lateral chromatic aberration curve of the optical imaging lens of Embodiment 3, which represents the deviation of different image heights on the imaging plane after the light rays pass through the lens. According to Figures 6A to 6D it can be known that the optical imaging lens given in Embodiment 3 can achieve good imaging quality.

[0115] Example 4

[0116] The following refers to Figures 7 to 8D describes the optical imaging lens according to Embodiment 4 of the present application. Figure 7 shows the structural schematic diagram of the optical imaging lens according to Embodiment 4 of the present application.

[0117] As Figure 7 shown, the optical imaging lens sequentially includes, from the object side to the image side: a first lens E1, a second lens E2, a diaphragm STO, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.

[0118] The first lens E1 has a negative focal power, its object side S1 is concave, and its image side S2 is convex. The second lens E2 has a negative focal power, its object side S3 is concave, and its image side S4 is concave. The third lens E3 has a positive focal power, its object side S5 is convex, and its image side S6 is convex. The fourth lens E4 has a positive focal power, its object side S7 is concave, and its image side S8 is convex. The fifth lens E5 has a negative focal power, its object side S9 is convex, and its image side S10 is concave. The filter E6 has an object side S11 and an image side S12. The light from the object sequentially passes through the surfaces S1 to S12 and finally forms an image on the imaging surface S13.

[0119] In this example, the total effective focal length f of the optical imaging lens is 1.93 mm, the total length TTL of the optical imaging lens is 5.94 mm, half of the diagonal length of the effective pixel area on the imaging surface S13 of the optical imaging lens is ImgH = 2.45 mm, half of the maximum field of view angle of the optical imaging lens is Semi - FOV = 58.4°, the aperture value Fno of the optical imaging lens is 2.18, the distance SAG11 on the optical axis from the intersection of the object side of the first lens and the optical axis to the vertex of the effective radius of the object side of the first lens is 0.38 mm, the distance SAG32 on the optical axis from the intersection of the image side of the third lens and the optical axis to the vertex of the effective radius of the image side of the third lens is - 0.23 mm, and the distance SAG42 on the optical axis from the intersection of the image side of the fourth lens and the optical axis to the vertex of the effective radius of the image side of the fourth lens is - 0.71 mm.

[0120] Table 7 shows the basic parameter table of the optical imaging lens of Example 4, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm). Table 8 shows the high - order term coefficients available for each aspherical mirror surface in Example 4, where each aspherical surface type can be defined by the formula (1) given in the above Example 1.

[0121]

[0122] Table 7

[0123] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 1.9269E+00 -2.1096E-01 8.6059E-02 -9.0229E-03 1.0557E-02 -2.1653E-03 1.2077E-03 -1.0864E-04 2.3628E-04 S2 6.5050E-01 -4.8525E-02 -9.9312E-03 -3.6368E-03 2.5453E-03 1.3208E-03 -1.4396E-04 -2.9624E-04 -1.6342E-04 S3 1.5325E-01 -2.6821E-02 -5.0553E-03 -5.7623E-04 5.5246E-04 -6.2475E-05 -4.6330E-05 -4.2210E-05 2.6668E-06 S4 1.2549E-01 5.3012E-03 -2.1181E-05 -2.8405E-04 8.3313E-06 -2.6434E-05 6.8135E-07 -9.8735E-06 0.0000E+00 S5 2.4418E-02 6.6434E-04 6.8795E-05 1.5814E-05 -4.2256E-06 1.8000E-06 0.0000E+00 0.0000E+00 0.0000E+00 S6 -7.6029E-02 1.0596E-02 7.3711E-04 6.9115E-04 1.0779E-04 2.4887E-05 1.4741E-05 5.6899E-07 1.1543E-05 S7 6.3794E-02 -4.1360E-02 -3.6047E-03 -2.4206E-04 1.3383E-03 7.3984E-04 3.3499E-04 7.2797E-05 2.9663E-06 S8 8.4048E-02 -3.2444E-02 -3.3202E-03 1.0773E-02 3.1575E-03 3.4482E-03 2.0149E-04 2.8118E-04 -2.4979E-04 S9 -9.5476E-01 1.2924E-01 1.5797E-02 1.3036E-02 -4.6577E-03 -4.7518E-05 -9.3306E-04 1.9749E-05 -8.0940E-05 S10 -1.7050E+00 3.3260E-01 -7.4859E-02 3.3534E-02 -1.3081E-02 3.9220E-03 -2.5965E-03 4.6737E-04 -5.2901E-04

[0124] Table 8

[0125] Figure 8A Shows the axial chromatic aberration curve of the optical imaging lens of Example 4, which represents the deviation of the convergence points of light rays of different wavelengths after passing through the lens. Figure 8B Shows the astigmatism curve of the optical imaging lens of Example 4, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 8C Shows the distortion curve of the optical imaging lens of Example 4, which represents the distortion magnitude values corresponding to different image heights. Figure 8DThe chromatic aberration of magnification curve of the optical imaging lens according to Embodiment 4 is shown, which represents the deviation of different image heights on the imaging surface after light passes through the lens. According to Figures 8A to 8D it can be seen that the optical imaging lens given in Embodiment 4 can achieve good imaging quality.

[0126] Example 5

[0127] The following refers to Figures 9 to 10D and describes the optical imaging lens according to Embodiment 5 of the present application. Figure 9 The schematic structural diagram of the optical imaging lens according to Embodiment 5 of the present application is shown.

[0128] As Figure 9 shown, the optical imaging lens sequentially includes, from the object side to the image side: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.

[0129] The first lens E1 has a negative optical power, its object surface S1 is concave, and its image surface S2 is convex. The second lens E2 has a negative optical power, its object surface S3 is concave, and its image surface S4 is concave. The third lens E3 has a positive optical power, its object surface S5 is convex, and its image surface S6 is convex. The fourth lens E4 has a positive optical power, its object surface S7 is convex, and its image surface S8 is convex. The fifth lens E5 has a negative optical power, its object surface S9 is convex, and its image surface S10 is concave. The filter E6 has an object surface S11 and an image surface S12. Light from the object sequentially passes through the surfaces S1 to S12 and finally forms an image on the imaging surface S13.

[0130] In this example, the total effective focal length f of the optical imaging lens is 1.87 mm, the total length TTL of the optical imaging lens is 6.25 mm, half of the diagonal length of the effective pixel area on the imaging surface S13 of the optical imaging lens is ImgH = 2.45 mm, half of the maximum field of view angle of the optical imaging lens is Semi - FOV = 58.9°, the aperture value Fno of the optical imaging lens is 2.19, the distance SAG11 on the optical axis from the intersection of the object surface of the first lens and the optical axis to the vertex of the effective radius of the object surface of the first lens is 0.46 mm, the distance SAG32 on the optical axis from the intersection of the image surface of the third lens and the optical axis to the vertex of the effective radius of the image surface of the third lens is - 0.23 mm, and the distance SAG42 on the optical axis from the intersection of the image surface of the fourth lens and the optical axis to the vertex of the effective radius of the image surface of the fourth lens is - 0.69 mm.

[0131] Table 9 shows the basic parameter table of the optical imaging lens of Example 5, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm). Table 10 shows the high-order term coefficients applicable to each aspherical mirror surface in Example 5, where each aspherical surface type can be defined by formula (1) given in the above Example 1.

[0132]

[0133]

[0134] Table 9

[0135] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 2.0494E+00 -2.3004E-01 8.7711E-02 -1.4564E-02 1.0422E-02 -2.5283E-03 1.1973E-03 -2.8178E-04 1.8163E-04 S2 6.9111E-01 -3.9419E-02 -7.1773E-03 -5.9432E-03 7.8242E-04 9.7784E-04 2.3890E-04 1.6015E-05 -5.7806E-05 S3 8.8387E-02 -3.4934E-02 -3.3826E-03 4.9505E-04 5.7545E-04 -1.1771E-04 -7.5497E-05 -4.5163E-05 -6.4583E-06 S4 9.5559E-02 1.9983E-03 1.0273E-04 -4.6835E-05 6.1789E-05 3.0737E-06 6.6262E-06 -6.3634E-06 0.0000E+00 S5 1.6417E-02 1.7114E-04 2.2618E-05 9.5048E-06 -1.9849E-06 6.4088E-07 0.0000E+00 0.0000E+00 0.0000E+00 S6 -6.8333E-02 7.6933E-03 -5.2883E-05 3.7981E-04 3.0226E-05 1.3164E-05 4.4880E-06 -5.7637E-06 1.7977E-06 S7 6.0572E-02 -3.4654E-02 -4.7463E-03 -1.4285E-03 3.5683E-04 3.4604E-04 2.1653E-04 6.6269E-05 1.4982E-05 S8 7.9316E-02 -3.5464E-02 -5.8575E-03 5.8923E-03 1.5147E-03 2.5352E-03 2.2627E-04 2.8930E-04 -5.4879E-05 S9 -9.3597E-01 1.2543E-01 1.2201E-02 9.7851E-03 -3.8863E-03 8.5450E-04 -6.7411E-04 -1.7495E-04 -1.0049E-04 S10 -1.6780E+00 3.3132E-01 -6.8416E-02 2.4903E-02 -1.4516E-02 2.1303E-03 -3.2640E-03 -1.0746E-05 -7.0026E-04

[0136] Table 10

[0137] Figure 10A shows the axial chromatic aberration curve of the optical imaging lens of Example 5, which represents the deviation of the convergence points of light rays of different wavelengths after passing through the lens. Figure 10B shows the astigmatism curve of the optical imaging lens of Example 5, which represents the curvature of the meridional image plane and the curvature of the sagittal image plane. Figure 10C shows the distortion curve of the optical imaging lens of Example 5, which represents the distortion magnitude values corresponding to different image heights. Figure 10D shows the lateral chromatic aberration curve of the optical imaging lens of Example 5, which represents the deviation of different image heights on the imaging plane after the light rays pass through the lens. According to Figures 10A to 10D it can be known that the optical imaging lens given in Example 5 can achieve good imaging quality.

[0138] Example 6

[0139] The following refers to Figures 11 to 12D to describe the optical imaging lens according to Example 6 of the present application. Figure 11 shows a schematic structural diagram of the optical imaging lens according to Example 6 of the present application.

[0140] As Figure 11 shown, the optical imaging lens sequentially includes, from the object side to the image side: a first lens E1, a second lens E2, a diaphragm STO, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.

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

[0142] In this example, the total effective focal length f of the optical imaging lens is 1.95 mm, the total length TTL of the optical imaging lens is 6.25 mm, half of the diagonal length of the effective pixel area on the imaging surface S13 of the optical imaging lens is ImgH = 2.45 mm, half of the maximum field of view angle of the optical imaging lens is Semi - FOV = 56.9°, the aperture value Fno of the optical imaging lens is 2.14, the distance SAG11 on the optical axis from the intersection of the object side of the first lens and the optical axis to the vertex of the effective radius of the object side of the first lens is 0.49 mm, the distance SAG32 on the optical axis from the intersection of the image side of the third lens and the optical axis to the vertex of the effective radius of the image side of the third lens is - 0.27 mm, and the distance SAG42 on the optical axis from the intersection of the image side of the fourth lens and the optical axis to the vertex of the effective radius of the image side of the fourth lens is - 0.66 mm.

[0143] Table 11 shows the basic parameter table of the optical imaging lens of Example 6, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm). Table 12 shows the higher - order term coefficients of the aspherical mirror surfaces that can be used in Example 6, where each aspherical surface type can be defined by the formula (1) given in the above Example 1.

[0144]

[0145] Table 11

[0146] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 2.0804E+00 -2.1649E-01 8.8281E-02 -1.0610E-02 1.1409E-02 -1.8195E-03 1.2783E-03 -1.7216E-04 2.2809E-04 S2 6.9453E-01 -4.6153E-02 -7.4342E-03 -4.5968E-03 1.7810E-03 1.2419E-03 2.5881E-04 -4.3997E-05 -6.8544E-05 S3 7.4873E-02 -2.0835E-02 -1.9986E-03 1.2834E-05 2.8981E-04 -3.5265E-05 -1.8285E-05 -1.3947E-05 -4.5740E-06 S4 9.9673E-02 3.0426E-03 5.5936E-04 6.8971E-05 8.7367E-05 -8.5102E-06 -6.2064E-07 -1.2611E-05 0.0000E+00 S5 2.2984E-02 2.1437E-04 1.0044E-04 3.2876E-05 8.3344E-07 7.4552E-07 0.0000E+00 0.0000E+00 0.0000E+00 S6 -9.7159E-02 8.2709E-03 -1.3770E-04 5.7397E-04 7.1429E-05 3.2774E-05 9.3871E-06 -4.2915E-06 3.1104E-06 S7 6.4204E-02 -3.8156E-02 -5.5604E-03 -1.6489E-03 4.5194E-04 4.8389E-04 3.0547E-04 1.0389E-04 2.4821E-05 S8 1.1154E-01 -5.3605E-02 2.3891E-03 1.8260E-03 3.9252E-03 1.7836E-03 1.0285E-03 6.4070E-05 6.2771E-05 S9 -6.7752E-01 6.5950E-02 2.2707E-02 6.3669E-03 -2.2591E-04 -3.1660E-04 -1.7803E-04 -4.7775E-04 -4.7393E-05 S10 -1.4102E+00 2.3925E-01 -4.9611E-02 2.0826E-02 -7.6513E-03 2.3636E-03 -1.2596E-03 2.3108E-04 -2.0639E-04

[0147] Table 12

[0148] Figure 12A Shows the axial chromatic aberration curve of the optical imaging lens of Example 6, which represents the deviation of the convergence points of light rays of different wavelengths after passing through the lens. Figure 12B Shows the astigmatism curve of the optical imaging lens of Example 6, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 12C Shows the distortion curve of the optical imaging lens of Example 6, which represents the distortion magnitude values corresponding to different image heights. Figure 12DThe longitudinal chromatic aberration curve of the optical imaging lens of Embodiment 6 is shown, which represents the deviation of different image heights on the imaging surface after light passes through the lens. According to Figures 12A to 12D it can be known that the optical imaging lens given in Embodiment 6 can achieve good imaging quality.

[0149] In summary, Embodiments 1 to 6 respectively satisfy the relationships shown in Table 13.

[0150] Conditional / Example 1 2 3 4 5 6 f1 / f -3.58 -2.80 -3.93 -2.87 -2.41 -2.51 (f3 + f4) / f5 -2.36 -2.36 -2.41 -2.11 -2.02 -2.19 ET1 / CT1 1.06 1.42 1.21 1.26 1.17 1.15 CT4 / ET4 2.99 3.02 3.02 2.84 3.02 3.05 DT31 / SAG32 -2.92 -3.16 -3.28 -2.72 -2.91 -2.58 SAG42 / SAG11 -1.93 -2.17 -2.09 -1.85 -1.49 -1.34 ImgH / f 1.19 1.29 1.19 1.27 1.31 1.26 TTL / SL 1.37 1.38 1.40 1.40 1.46 1.47 R8 / R10 -1.58 -1.11 -1.14 -1.06 -1.05 -0.83 R5 / R6 -4.91 -19.44 -6.24 -6.88 -8.93 -8.66 CT3 / CT2 2.09 2.01 1.98 1.70 1.29 1.39 R2 / R1 2.02 2.39 1.76 2.46 4.11 4.06

[0151] Table 13

[0152] This application also provides an imaging device, and its electronic photosensitive element can be a charge-coupled device (CCD) or a complementary metal-oxide-semiconductor device (CMOS). The imaging device can be an independent imaging device such as a digital camera, or an imaging module integrated on a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens described above.

[0153] The above description is only the preferred embodiments of this application and the description of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to the technical solutions formed by the specific combination of the above technical features, and 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 technical solutions formed by mutually replacing the above features with the technical features (but not limited to) having similar functions disclosed in this application.

Claims

1. An optical imaging lens, characterized in that, In order from the object side to the image side along the optical axis, it includes: A first lens with negative optical power, whose object side is concave and image side is convex; A second lens with optical power; An aperture stop; A third lens with positive optical power, whose object side is convex and image side is convex; A fourth lens with positive optical power, whose image side is convex; and A fifth lens with negative optical power, whose image side is concave; The number of lenses with optical power in the optical imaging lens is five; Half of the maximum field of view of the optical imaging lens, Semi-FOV, satisfies: 56.1° ≤ Semi-FOV ≤ 58.9°; The effective focal length f3 of the third lens, the effective focal length f4 of the fourth lens, and the effective focal length f5 of the fifth lens satisfy: -2.41 ≤ (f3 + f4) / f5 < -2.0; and The curvature radius R1 of the object side of the first lens and the curvature radius R2 of the image side of the first lens satisfy: 1.76 ≤ R2 / R1 ≤ 4.

11.

2. The optical imaging lens according to claim 1, characterized in that, The total effective focal length f of the optical imaging lens and the effective focal length f1 of the first lens satisfy: -3.93 ≤ f1 / f ≤ -2.

41.

3. The optical imaging lens according to claim 1, wherein, The edge thickness ET1 of the first lens and the central thickness CT1 of the first lens on the optical axis satisfy: 1.06 ≤ ET1 / CT1 ≤ 1.

42.

4. The optical imaging lens according to claim 1, characterized in that, The edge thickness ET4 of the fourth lens and the central thickness CT4 of the fourth lens on the optical axis satisfy: 2.84 ≤ CT4 / ET4 ≤ 3.

05.

5. The optical imaging lens according to claim 1, characterized in that, The maximum effective radius DT31 of the object side of the third lens and the distance SAG32 on the optical axis from the intersection point of the image side of the third lens and the optical axis to the effective radius vertex of the image side of the third lens satisfy: -3.28 ≤ DT31 / SAG32 ≤ -2.

58.

6. The optical imaging lens according to claim 1, characterized in that The curvature radius R8 of the image side of the fourth lens and the curvature radius R10 of the image side of the fifth lens satisfy: -1.58 ≤ R8 / R10 < -0.

8.

7. The optical imaging lens according to claim 1, wherein The curvature radius R5 of the object side of the third lens and the curvature radius R6 of the image side of the third lens satisfy: -19.44 ≤ R5 / R6 ≤ -4.

91.

8. The optical imaging lens according to claim 1, characterized in that, The central thickness CT2 of the second lens on the optical axis and the central thickness CT3 of the third lens on the optical axis satisfy: 1.29 ≤ CT3 / CT2 ≤ 2.

09.

9. The optical imaging lens according to claim 2, wherein, The distance SAG11 on the optical axis from the intersection point of the object side of the first lens and the optical axis to the effective radius vertex of the object side of the first lens and the distance SAG42 on the optical axis from the intersection point of the image side of the fourth lens and the optical axis to the effective radius vertex of the image side of the fourth lens satisfy: -2.17 ≤ SAG42 / SAG11 ≤ -1.

34.

10. The optical imaging lens according to any one of claims 1-9, characterized in that, The spacing distance between the third lens and the fourth lens on the optical axis is greater than the spacing distance between any two adjacent lenses from the first lens to the fifth lens on the optical axis.

11. The optical imaging lens according to any one of claims 1-9, characterized in that, The distance between the fourth lens and the fifth lens on the optical axis is less than the distance between any two adjacent lenses among the first lens to the fifth lens on the optical axis.

12. The optical imaging lens according to any one of claims 1-9, characterized in that, Half of the diagonal length ImgH of the effective pixel region on the imaging surface of the optical imaging lens and the total effective focal length f of the optical imaging lens satisfy: 1.19 ≤ ImgH / f ≤ 1.

31.

13. The optical imaging lens according to any one of claims 1-9, characterized in that, The distance SL from the aperture stop to the imaging surface of the optical imaging lens on the optical axis and the distance TLL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis satisfy: 1.37 ≤ TTL / SL < 1.5.

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