Optical imaging lens

Abstract

The application discloses an optical imaging lens, which comprises, in sequence from the object side to the image side along the optical axis, a first lens with negative optical power, the image side of which is concave; a second lens with optical power; and a third lens with optical power, the image side of which is concave; the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy the following conditional expressions: f < 0.5 mm; 1.6 < f / EPD < 2.4.

Description

Technical Field

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

[0002] Currently, the mainstream fingerprint recognition technologies on the market include semiconductor silicon technology, optical imaging technology, and ultrasonic technology, with optical imaging technology holding a dominant position in the market. With the further development of information technology, more and more electronic devices urgently need portable miniature cameras that can provide close-range, wide-range recognition. However, existing miniaturized cameras generally have a small field of view and limited recognition range, making them unable to perform large-scale imaging and recognition of object surfaces from a relatively static position.

[0003] How to enable a miniaturized camera to perform large-scale visible light imaging and recognition of the surface of an object at ultra-close distances is one of the problems that many lens designers urgently need to solve. Summary of the Invention

[0004] In one aspect, the present application provides an optical imaging lens comprising, in order from the object side to the image side along the optical axis, a first lens element having negative optical power, the image-side surface of which is concave; a second lens element having optical power; and a third lens element having optical power, the image-side surface of which is concave; the total effective focal length f of the optical imaging lens and the entrance pupil diameter (EPD) of the optical imaging lens can satisfy the following conditions: f < 0.5 mm; 1.6 < f / EPD < 2.4.

[0005] In one embodiment, there is at least one aspherical mirror surface between the object side surface of the first lens and the image side surface of the third lens.

[0006] In one embodiment, the entrance pupil diameter EPD of the optical imaging lens and half the diagonal length of the effective pixel area on the imaging plane of the optical imaging lens ImgH may satisfy the following: 0<EPD / ImgH<0.4.

[0007] In one embodiment, the effective focal length f2 of the second lens and the effective focal length f1 of the first lens may satisfy: -0.7<f2 / f1<-0.1.

[0008] In one embodiment, the total effective focal length f of the optical imaging lens and the curvature radius R6 of the image-side surface of the third lens element may satisfy: 0.4<f / R6<1.2.

[0009] In one embodiment, a curvature radius R3 of the object-side surface of the second lens and a curvature radius R4 of the image-side surface of the second lens may satisfy: 0.1<|R4| / R3<0.8.

[0010] In one embodiment, a curvature radius R1 of the object-side surface of the first lens and a curvature radius R2 of the image-side surface of the first lens may satisfy: 0.2<(R2+R1) / (R2-R1)<1.8.

[0011] In one embodiment, the combined focal length f123 of the first lens, the second lens, and the third lens and the effective focal length f3 of the third lens may satisfy: 0.1<f123 / |f3|<0.6.

[0012] In one embodiment, a center thickness CT1 of the first lens on the optical axis and a spacing distance T12 between the first lens and the second lens on the optical axis may satisfy the following: 0.3<T12 / CT1<0.9.

[0013] In one embodiment, an edge thickness ET2 of the second lens and a center thickness CT2 of the second lens on the optical axis may satisfy: 0.4<ET2 / CT2<0.8.

[0014] In one embodiment, the distance SAG31 from the intersection of the object side surface of the third lens and the optical axis to the vertex of the effective radius of the object side surface of the third lens on the optical axis and the distance SAG22 from the intersection of the image side surface of the second lens and the optical axis to the vertex of the effective radius of the image side surface of the second lens on the optical axis may satisfy: 0.2<SAG31 / SAG22<0.8.

[0015] In one embodiment, the optical imaging lens further includes an aperture, and the sum of the spacing distances ∑AT between any two adjacent lenses from the first lens to the third lens on the optical axis and the distance SD from the aperture to the image side surface of the third lens on the optical axis may satisfy: 0.4<∑AT / SD<1.0.

[0016] In one embodiment, the effective semi-aperture DT31 of the object-side surface of the third lens, the effective semi-aperture DT21 of the object-side surface of the second lens, and the effective semi-aperture DT22 of the image-side surface of the second lens may satisfy: 0.5<DT31 / (DT21+DT22)<0.9.

[0017] In one embodiment, the maximum half field of view (Semi-FOV) of the optical imaging lens and the distance TTL from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis may satisfy: 0.6 mm -1 <tan(Semi-FOV) / TTL<1.0mm -1 .

[0018] In one embodiment, the optical imaging lens further includes a glass screen, which is disposed between the object side and the first lens.

[0019] In another aspect, the present application provides an optical imaging lens comprising, in order from the object side to the image side along the optical axis: a first lens having negative optical power, whose image-side surface is concave; a second lens having optical power; and a third lens having optical power, whose image-side surface is concave; the combined focal length f123 of the first lens, the second lens, and the third lens and the effective focal length f3 of the third lens satisfy the following: 0.1 < f123 / |f3| < 0.6.

[0020] This application uses three lenses. By rationally allocating the optical power, surface shape, center thickness of each lens, and on-axis spacing between lenses, the above-mentioned optical imaging lens has at least one beneficial effect of a wide field of view, miniaturization, and high imaging quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0022] Figure 1 1 shows a schematic structural diagram of an optical imaging lens according to Example 1 of the present application;

[0023] Figures 2A to 2D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 1 are respectively shown;

[0024] Figure 3 1 shows a schematic structural diagram of an optical imaging lens according to Example 2 of the present application;

[0025] Figures 4A to 4D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 2 are respectively shown;

[0026] Figure 5 1 shows a schematic structural diagram of an optical imaging lens according to Example 3 of the present application;

[0027] 6A to 6D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 3 are respectively shown;

[0028] Figure 7 1 shows a schematic structural diagram of an optical imaging lens according to Example 4 of the present application;

[0029] Figures 8A to 8D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 4 are respectively shown;

[0030] Figure 9A structure diagram of the optical imaging lens according to Embodiment 5 of the present application is shown.

[0031] 10A to 10D An on-axis chromatic aberration curve, an astigmatism curve, a distortion curve and a lateral chromatic aberration curve of the optical imaging lens of Embodiment 5 are shown respectively.

[0032] Figure 11 A structure diagram of the optical imaging lens according to Embodiment 6 of the present application is shown.

[0033] 12A to 12D An on-axis chromatic aberration curve, an astigmatism curve, a distortion curve and a lateral chromatic aberration curve of the optical imaging lens of Embodiment 6 are shown respectively.

[0034] Figure 13 A structure diagram of the optical imaging lens according to Embodiment 7 of the present application is shown.

[0035] 14A to 14D An on-axis chromatic aberration curve, an astigmatism curve, a distortion curve and a lateral chromatic aberration curve of the optical imaging lens of Embodiment 7 are shown respectively.

[0036] Figure 15 A structure diagram of the optical imaging lens according to Embodiment 8 of the present application is shown.

[0037] 16A to 16D An on-axis chromatic aberration curve, an astigmatism curve, a distortion curve and a lateral chromatic aberration curve of the optical imaging lens of Embodiment 8 are shown respectively.

[0038] Figure 17 A structure diagram of the optical imaging lens according to Embodiment 9 of the present application is shown.

[0039] 18A to 18D An on-axis chromatic aberration curve, an astigmatism curve, a distortion curve and a lateral chromatic aberration curve of the optical imaging lens of Embodiment 9 are shown respectively.

[0040] Figure 19 A structure diagram of the optical imaging lens according to Embodiment 10 of the present application is shown; and

[0041] 20A to 20D An on-axis chromatic aberration curve, an astigmatism curve, a distortion curve and a lateral chromatic aberration curve of the optical imaging lens of Embodiment 10 are shown respectively. DETAILED DESCRIPTION

[0042] For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely descriptions of exemplary embodiments of the present application and are not intended to limit the scope of the present application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0043] It should be noted that in this specification, the terms "first," "second," "third," etc., are used solely to distinguish one feature from another and do not limit the features. Thus, the first lens discussed below could also be referred to as the second lens or the third lens without departing from the teachings of this application.

[0044] 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.

[0045] In this article, the paraxial region refers to the area near the optical axis. If a lens surface is convex and the location of the convex surface is undefined, it means that the lens surface is convex at least in the paraxial region. If a lens surface is concave and the location of the concave surface is undefined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the subject is called the object-side surface of the lens, and the surface of each lens closest to the imaging plane is called the image-side surface of the lens.

[0046] It should also be understood that the terms "comprises," "including," "having," "includes," and / or "comprising," when used in this specification, indicate the presence of the stated features, elements, and / or components, but do not preclude the presence or addition of one or more other features, elements, components, and / or combinations thereof. In addition, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire list of features rather than modifying the individual elements in the list. In addition, when describing embodiments of the present application, "may" is used to mean "one or more embodiments of the present application." And, the term "exemplary" is intended to refer to an example or illustration.

[0047] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by those skilled in the art to which this application belongs. It should also be understood that terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology and will not be interpreted in an idealized or overly formal sense unless expressly defined as such herein.

[0048] 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 application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

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

[0050] An optical imaging lens according to an exemplary embodiment of the present application may include, for example, three lenses having optical power: a first lens, a second lens, and a third lens. These three lenses are arranged sequentially along the optical axis from the object side to the image side. Any two adjacent lenses among the first through third lenses may be spaced apart by a distance.

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

[0052] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy the requirement f < 0.5 mm, where f is the total effective focal length of the optical imaging lens. More specifically, f can further satisfy the requirement f < 0.4 mm. Meeting f < 0.5 mm facilitates the expansion of the lens's recognition area while achieving high-definition imaging and miniaturization.

[0053] In an exemplary embodiment, the optical imaging lens according to the present application can satisfy the following relationship: 1.6 < f / EPD < 2.4, where f is the total effective focal length of the optical imaging lens and EPD is the entrance pupil diameter of the optical imaging lens. This condition facilitates achieving a wide field of view and high-definition imaging while ensuring sufficient light entering the lens and meeting the quantum efficiency requirements for normal chip operation.

[0054] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the following conditions: 0 < EPD / ImgH < 0.4, where EPD is the entrance pupil diameter of the optical imaging lens, and ImgH is half the diagonal length of the effective pixel area on the imaging plane of the optical imaging lens. More specifically, EPD and ImgH may further satisfy the following conditions: 0.1 < EPD / ImgH < 0.3. This condition of 0 < EPD / ImgH < 0.4 facilitates expanding the imaging plane of the lens while ensuring sufficient light entering the lens, thereby improving the resolution of the optical imaging lens.

[0055] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the following relationship: -0.7 < f2 / f1 < -0.1, where f2 is the effective focal length of the second lens element and f1 is the effective focal length of the first lens element. More specifically, f2 and f1 may further satisfy the following relationship: -0.6 < f2 / f1 < -0.1. This relationship, -0.7 < f2 / f1 < -0.1, helps concentrate all positive optical power on the second lens element, reducing aberrations introduced by the first lens element.

[0056] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the following relationship: 0.4 < f / R6 < 1.2, where f is the total effective focal length of the optical imaging lens and R6 is the radius of curvature of the image-side surface of the third lens element. More specifically, f and R6 may further satisfy the following relationship: 0.6 < f / R6 < 1.0. This relationship helps limit light deflection and improves the imaging quality of the optical imaging lens.

[0057] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the following relationship: 0.1 < |R4| / R3 < 0.8, where R3 is the radius of curvature of the object-side surface of the second lens element, and R4 is the radius of curvature of the image-side surface of the second lens element. More specifically, R4 and R3 may further satisfy the following relationship: 0.2 < |R4| / R3 < 0.7. This relationship of 0.1 < |R4| / R3 < 0.8 facilitates controlling the optical power of the second lens element within a reasonable range and adjusting the contribution of the second lens element to imaging system aberrations.

[0058] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the following: 0.2 < (R2 + R1) / (R2 - R1) < 1.8, where R1 is the radius of curvature of the object-side surface of the first lens element, and R2 is the radius of curvature of the image-side surface of the first lens element. More specifically, R2 and R1 may further satisfy the following: 0.3 < (R2 + R1) / (R2 - R1) < 1.7. Satisfying 0.2 < (R2 + R1) / (R2 - R1) < 1.8 facilitates adjusting the contribution of the first lens element to the aberrations of the imaging system.

[0059] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the following relationship: 0.1 < f123 / |f3| < 0.6, where f123 is the combined focal length of the first, second, and third lenses, and f3 is the effective focal length of the third lens. More specifically, f123 and f3 may further satisfy the following relationship: 0.1 < f123 / |f3| < 0.5. This 0.1 < f123 / |f3| < 0.6 requirement facilitates a reasonable distribution of tolerance sensitivities among the first, second, and third lenses, thereby shortening the length of the optical imaging lens.

[0060] In exemplary embodiments, the optical imaging lens according to the present application can satisfy: 0.3 < T12 / CT1 < 0.9, wherein CT1 is the center thickness of the first lens on the optical axis, and T12 is the interval distance of the first lens and the second lens on the optical axis. More specifically, CT1 and T12 can further satisfy: 0.4 < T12 / CT1 < 0.8. Satisfying 0.3 < T12 / CT1 < 0.9 is conducive to the miniaturization of the optical imaging lens and the processing molding.

[0061] In exemplary embodiments, the optical imaging lens according to the present application can satisfy: 0.4 < ET2 / CT2 < 0.8, wherein ET2 is the edge thickness of the second lens, and CT2 is the center thickness of the second lens on the optical axis. More specifically, ET2 and CT2 can further satisfy: 0.5 < ET2 / CT2 < 0.7. Satisfying 0.4 < ET2 / CT2 < 0.8 is conducive to the batch processing of the lens.

[0062] In exemplary embodiments, the optical imaging lens according to the present application can satisfy: 0.2 < SAG31 / SAG22 < 0.8, wherein SAG31 is the distance on the optical axis from 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, and SAG22 is the distance on the optical axis from the intersection of the image side of the second lens and the optical axis to the effective radius vertex of the image side of the second lens. More specifically, SAG31 and SAG22 can further satisfy: 0.3 < SAG31 / SAG22 < 0.6. Satisfying 0.2 < SAG31 / SAG22 < 0.8 can effectively reduce the difficulty of lens molding.

[0063] In exemplary embodiments, the optical imaging lens according to the present application can satisfy: 0.4 < ∑AT / SD < 1.0, wherein ∑AT is the sum of the interval distances of any two adjacent lenses among the first lens to the third lens on the optical axis, and SD is the distance on the optical axis from the diaphragm to the image side of the third lens. More specifically, ∑AT and SD can further satisfy: 0.5 < ∑AT / SD < 0.9. Satisfying 0.4 < ∑AT / SD < 1.0 is conducive to the rationality of the spatial layout of the lens, reduces the assembly difficulty of the optical imaging lens, and makes the lens compact.

[0064] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy the following: 0.5 < DT31 / (DT21 + DT22) < 0.9, where DT31 is the effective semi-aperture of the object-side surface of the third lens element, DT21 is the effective semi-aperture of the object-side surface of the second lens element, and DT22 is the effective semi-aperture of the image-side surface of the second lens element. More specifically, DT31, DT21, and DT22 may further satisfy the following: 0.6 < DT31 / (DT21 + DT22) < 0.8. Satisfying 0.5 < DT31 / (DT21 + DT22) < 0.9 helps reduce the difficulty of assembling the second and third lenses and improves the assembly stability of the optical imaging lens.

[0065] In an exemplary embodiment, the optical imaging lens according to the present application may meet the following requirements: 0.6 mm -1 <tan(Semi-FOV) / TTL<1.0mm -1 , where Semi-FOV is the maximum half field of view angle of the optical imaging lens, and TTL is the distance from the object side of the first lens to the imaging plane of the optical imaging lens on the optical axis. More specifically, Semi-FOV and TTL can further meet the following requirements: 0.6mm -1 <tan(Semi-FOV) / TTL<0.9mm -1 . Meet 0.6mm -1 <tan(Semi-FOV) / TTL<1.0mm -1 , which is beneficial to expanding the field of view of the optical imaging lens while ensuring the length of the lens.

[0066] In an exemplary embodiment, the optical imaging lens according to the present application further includes a glass screen disposed between the object side and the first lens. In an exemplary embodiment, the optical imaging lens according to the present application further includes an aperture disposed between the first lens and the second lens. Optionally, the above-mentioned 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. The present application proposes an optical imaging lens having the characteristics of miniaturization, a large field of view, a large recognition area, strong stability, high resolution, and high imaging quality. The optical imaging lens according to the above-mentioned embodiment of the present application may adopt multiple lenses, such as the three lenses mentioned above. By reasonably allocating the optical power, surface shape, center thickness of each lens, and axial spacing between each lens, etc., the incident light can be effectively converged, the total optical length of the imaging lens can be reduced, and the processability of the imaging lens can be improved, making the optical imaging lens more conducive to production and processing.

[0067] In the embodiments of the present application, at least one of the mirror surfaces of each lens is an aspheric mirror surface, i.e., at least one of the mirror surfaces of the object side surface to the image side surface of the first lens to the third lens is an aspheric mirror surface. The aspheric lens is characterized in that the curvature is continuously changed from the center of the lens to the periphery of the lens. Unlike the spherical lens having a constant curvature from the center of the lens to the periphery of the lens, the aspheric lens has a better curvature radius characteristic, and has the advantages of improving the distortion aberration and improving the astigmatism aberration. After the aspheric lens is used, the aberration occurring during imaging can be eliminated as much as possible, thereby improving the imaging quality. Optionally, at least one of the object side surface and the image side surface of each of the first lens, the second lens and the third lens is an aspheric mirror surface. Optionally, the object side surface and the image side surface of each of the first lens, the second lens and the third lens are aspheric mirror surfaces.

[0068] However, those skilled in the art should understand that the number of lenses constituting the optical imaging lens can be changed without departing from the technical solutions claimed by the present application, to obtain the various results and advantages described in the present specification. For example, although three lenses are described as an example in the embodiments, the optical imaging lens is not limited to including three lenses. If necessary, the optical imaging lens can also include other numbers of lenses.

[0069] The specific embodiments of the optical imaging lens applicable to the above-described embodiments are further described below with reference to the accompanying drawings.

[0070] Example 1

[0071] The following refers to Figures 1 to 2D An optical imaging lens according to Embodiment 1 of the present application is described. Figure 1 A structural schematic diagram of the optical imaging lens according to Embodiment 1 of the present application is shown.

[0072] As Figure 1 shown, the optical imaging lens sequentially includes a glass screen E1, a first lens E2, a stop STO, a second lens E3, a third lens E4, a filter E5 and an imaging surface S11 from the object side to the image side.

[0073] The glass screen E1 has an object side surface S1 and an image side surface S2. The first lens E2 has a negative focal power, the object side surface S3 thereof is a concave surface, and the image side surface S4 thereof is a convex surface. The second lens E3 has a positive focal power, the object side surface S5 thereof is a convex surface, and the image side surface S6 thereof is a convex surface. The third lens E4 has a positive focal power, the object side surface S7 thereof is a convex surface, and the image side surface S8 thereof is a concave surface. The filter E5 has an object side surface S9 and an image side surface S10. The light from the object sequentially passes through the surfaces S1 to S10 and is finally imaged on the imaging surface S11.

[0074] Table 1 shows the basic parameters of the optical imaging lens of Example 1, wherein the units of curvature radius, thickness / distance and focal length are all millimeters (mm).

[0075]

[0076] Table 1

[0077] In this example, the total effective focal length f of the optical imaging lens is 0.30 mm, the total length TTL of the optical imaging lens (i.e., the distance on the optical axis from the object-side surface S3 of the first lens element E2 to the imaging surface S11 of the optical imaging lens) is 2.55 mm, half the diagonal length ImgH of the effective pixel area on the imaging surface S11 of the optical imaging lens is 0.77 mm, the maximum half field of view Semi-FOV of the optical imaging lens is 64.0°, and the aperture value Fno of the optical imaging lens is 1.98.

[0078] In Example 1, the object-side surface and the image-side surface of any lens from the first lens E2 to the third lens E4 are both aspherical surfaces. The surface shape x of each aspherical lens can be defined by, but is not limited to, the following aspherical surface formula:

[0079]

[0080] Wherein, x is the distance vector height of the aspheric surface 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., the paraxial curvature c is the reciprocal of the curvature radius 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 shows the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40 10 、A 12 、A 14 、A 16 、A 18 and A 20 .

[0081] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S3 2.7986E+00 -1.2645E+01 5.1359E+01 -1.5901E+02 3.6339E+02 -6.1070E+02 7.5644E+02 -6.9077E+02 4.6259E+02 S4 6.7319E+01 -5.8714E+03 3.0445E+05 -9.9690E+06 2.1929E+08 -3.3697E+09 3.7035E+10 -2.9456E+11 1.6972E+12 S5 -6.6721E+01 3.3147E+04 -9.6074E+06 1.6480E+09 -1.7499E+11 1.1618E+13 -4.6946E+14 1.0557E+16 -1.0130E+17 S6 3.9571E+01 -3.0006E+04 5.0047E+06 -4.7937E+08 3.0197E+10 -1.3214E+12 4.1325E+13 -9.3640E+14 1.5404E+16 S7 4.5900E+01 -1.1535E+04 1.1653E+06 -7.5857E+07 3.4570E+09 -1.1436E+11 2.8049E+12 -5.1568E+13 7.1107E+14 S8 -3.7219E+01 1.6985E+03 -7.7267E+04 2.4813E+06 -5.4105E+07 8.1562E+08 -8.6571E+09 6.5229E+10 -3.4717E+11

[0082] Table 2

[0083] Figure 2A 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 passing through the lens. Figure 2B 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 2C The distortion curve of the optical imaging lens of Example 1 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 2DThe chromatic aberration curve of the optical imaging lens of Example 1 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. Figures 2A to 2D It can be seen that the optical imaging lens provided in Example 1 can achieve good imaging quality.

[0084] Example 2

[0085] The following reference Figures 3 to 4D The optical imaging lens according to Example 2 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Example 1 will be omitted. Figure 3 A schematic structural diagram of an optical imaging lens according to Example 2 of the present application is shown.

[0086] like Figure 3 As shown, the optical imaging lens comprises, from the object side to the image side, a glass screen E1, a first lens E2, an aperture STO, a second lens E3, a third lens E4, a filter E5 and an imaging surface S11.

[0087] Glass screen E1 has an object-side surface S1 and an image-side surface S2. The first lens E2 has negative power, with its object-side surface S3 being concave and its image-side surface S4 being convex. The second lens E3 has positive power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The third lens E4 has positive power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The filter E5 has an object-side surface S9 and an image-side surface S10. Light from the object sequentially passes through each surface S1 to S10 and is ultimately imaged on the imaging surface S11.

[0088] In this example, the total effective focal length f of the optical imaging lens is 0.31 mm, the total length TTL of the optical imaging lens is 2.65 mm, half the diagonal length ImgH of the effective pixel area on the imaging surface S11 of the optical imaging lens is 0.77 mm, the maximum half field of view Semi-FOV of the optical imaging lens is 65.9°, and the aperture value Fno of the optical imaging lens is 1.81.

[0089] Table 3 shows the basic parameters of the optical imaging lens of Example 2, where the units of curvature radius, thickness / distance, and focal length are all in millimeters (mm). Table 4 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 2, where the surface shape of each aspherical surface can be defined by formula (1) given in Example 1 above.

[0090]

[0091] Table 3

[0092] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S3 2.5398E+00 -1.1617E+01 4.7086E+01 -1.3999E+02 2.9804E+02 -4.5757E+02 5.1144E+02 -4.1810E+02 2.4926E+02 S4 8.0564E+01 -8.4551E+03 5.3153E+05 -2.1089E+07 5.6089E+08 -1.0393E+10 1.3741E+11 -1.3122E+12 9.0630E+12 S5 -2.9291E+01 9.9798E+03 -1.9789E+06 2.1798E+08 -1.4122E+10 5.4276E+11 -1.1906E+13 1.3236E+14 -5.2986E+14 S6 3.6601E+00 -1.4095E+04 2.0729E+06 -1.6818E+08 8.9508E+09 -3.3295E+11 8.9361E+12 -1.7573E+14 2.5391E+15 S7 3.2174E+01 -8.4304E+03 8.0390E+05 -5.0537E+07 2.3240E+09 -8.0967E+10 2.1510E+12 -4.3237E+13 6.4745E+14 S8 -3.2814E+01 9.9959E+02 -3.0097E+04 6.9042E+05 -1.1010E+07 1.1695E+08 -7.6188E+08 2.0103E+09 1.2077E+10

[0093] Table 4

[0094] Figure 4A 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 passing through the lens. Figure 4B The astigmatism curve of the optical imaging lens of Example 2 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 4C The distortion curve of the optical imaging lens of Example 2 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 4D The chromatic aberration curve of the optical imaging lens of Example 2 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. Figures 4A to 4D It can be seen that the optical imaging lens provided in Example 2 can achieve good imaging quality.

[0095] Example 3

[0096] The following reference Figures 5 to 6D An optical imaging lens according to Example 3 of the present application is described. Figure 5 A schematic structural diagram of an optical imaging lens according to Example 3 of the present application is shown.

[0097] like Figure 5 As shown, the optical imaging lens comprises, from the object side to the image side, a glass screen E1, a first lens E2, an aperture STO, a second lens E3, a third lens E4, a filter E5 and an imaging surface S11.

[0098] Glass screen E1 has an object-side surface S1 and an image-side surface S2. First lens E2 has negative power, with its object-side surface S3 being concave and its image-side surface S4 being concave. Second lens E3 has positive power, with its object-side surface S5 being convex and its image-side surface S6 being convex. Third lens E4 has negative power, with its object-side surface S7 being convex and its image-side surface S8 being concave. Filter E5 has an object-side surface S9 and an image-side surface S10. Light from an object sequentially passes through surfaces S1 to S10 and is ultimately imaged on imaging surface S11.

[0099] In this example, the total effective focal length f of the optical imaging lens is 0.35 mm, the total length TTL of the optical imaging lens is 2.65 mm, half the diagonal length ImgH of the effective pixel area on the imaging surface S11 of the optical imaging lens is 0.78 mm, the maximum half field of view Semi-FOV of the optical imaging lens is 64.6°, and the aperture value Fno of the optical imaging lens is 1.94.

[0100] Table 5 shows the basic parameters of the optical imaging lens of Example 3, where the units of curvature radius, thickness / distance, and focal length are all in millimeters (mm). Table 6 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 3, where the surface shape of each aspherical surface can be defined by formula (1) given in Example 1 above.

[0101]

[0102] Table 5

[0103] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S3 2.1904E+00 -7.4427E+00 2.4343E+01 -6.4428E+01 1.2955E+02 -1.9334E+02 2.1292E+02 -1.7265E+02 1.0252E+02 S4 2.1535E+01 -2.5593E+03 1.7836E+05 -7.1852E+06 1.8595E+08 -3.2802E+09 4.0801E+10 -3.6427E+11 2.3458E+12 S5 -4.3343E+01 9.1738E+03 -1.0576E+06 6.1684E+07 -1.2289E+09 -5.0426E+10 3.4404E+12 -7.3507E+13 5.6093E+14 S6 6.3029E+01 -1.9998E+04 2.4913E+06 -1.8410E+08 8.9166E+09 -2.9282E+11 6.5497E+12 -9.7110E+13 8.6311E+14 S7 -2.6122E+01 -2.3984E+03 3.3731E+05 -2.2966E+07 1.0803E+09 -3.7496E+10 9.6434E+11 -1.8163E+13 2.4572E+14 S8 -6.5709E+01 4.0585E+03 -1.9733E+05 6.5470E+06 -1.4968E+08 2.4221E+09 -2.8321E+10 2.4187E+11 -1.5096E+12

[0104] Table 6

[0105] Figure 6A 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 passing through the lens. Figure 6B 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 6C The distortion curve of the optical imaging lens of Example 3 is shown, which represents the distortion values ​​corresponding to different image heights. Figure 6D 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 lens. 6A to 6D It can be seen that the optical imaging lens provided in Example 3 can achieve good imaging quality.

[0106] Example 4

[0107] The following reference Figures 7 to 8D An optical imaging lens according to Example 4 of the present application is described. Figure 7 A schematic structural diagram of an optical imaging lens according to Example 4 of the present application is shown.

[0108] like Figure 7 As shown, the optical imaging lens comprises, from the object side to the image side, a glass screen E1, a first lens E2, an aperture STO, a second lens E3, a third lens E4, a filter E5 and an imaging surface S11.

[0109] Glass screen E1 has an object-side surface S1 and an image-side surface S2. First lens E2 has negative power, with its object-side surface S3 being concave and its image-side surface S4 being concave. Second lens E3 has positive power, with its object-side surface S5 being convex and its image-side surface S6 being convex. Third lens E4 has negative power, with its object-side surface S7 being convex and its image-side surface S8 being concave. Filter E5 has an object-side surface S9 and an image-side surface S10. Light from an object sequentially passes through surfaces S1 to S10 and is ultimately imaged on imaging surface S11.

[0110] In this example, the total effective focal length f of the optical imaging lens is 0.32 mm, the total length TTL of the optical imaging lens is 2.65 mm, half the diagonal length ImgH of the effective pixel area on the imaging surface S11 of the optical imaging lens is 0.73 mm, the maximum half field of view Semi-FOV of the optical imaging lens is 64.6°, and the aperture value Fno of the optical imaging lens is 2.15.

[0111] Table 7 shows the basic parameters of the optical imaging lens of Example 4, where the units of curvature radius, thickness / distance, and focal length are all in millimeters (mm). Table 8 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 4, where the surface shape of each aspherical surface can be defined by formula (1) given in Example 1 above.

[0112]

[0113] Table 7

[0114] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S3 2.3124E+00 -7.8363E+00 2.5303E+01 -6.6531E+01 1.3428E+02 -2.0320E+02 2.2890E+02 -1.9127E+02 1.1775E+02 S4 2.8070E+01 -2.1199E+03 1.0414E+05 -3.1712E+06 6.3919E+07 -8.8826E+08 8.7048E+09 -6.0653E+10 2.9876E+11 S5 -3.7281E+01 1.5731E+04 -3.7559E+06 5.0872E+08 -4.1434E+10 2.0591E+12 -6.0934E+13 9.8356E+14 -6.6494E+15 S6 1.0013E+02 -3.5293E+04 5.5038E+06 -5.2048E+08 3.2996E+10 -1.4690E+12 4.7106E+13 -1.1012E+15 1.8784E+16 S7 -3.7573E+01 -2.2528E+03 5.0901E+05 -4.2518E+07 2.1722E+09 -7.4740E+10 1.7865E+12 -2.9734E+13 3.3567E+14 S8 -5.1834E+01 2.5705E+03 -1.1696E+05 3.9451E+06 -9.4848E+07 1.6354E+09 -2.0462E+10 1.8704E+11 -1.2474E+12

[0115] Table 8

[0116] Figure 8A 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 passing through the lens. Figure 8B 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 8C The distortion curve of the optical imaging lens of Example 4 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 8D 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 lens. Figures 8A to 8D It can be seen that the optical imaging lens provided in Example 4 can achieve good imaging quality.

[0117] Example 5

[0118] The following reference Figures 9 to 10D An optical imaging lens according to Example 5 of the present application is described. Figure 9 A schematic structural diagram of an optical imaging lens according to Example 5 of the present application is shown.

[0119] like Figure 9 As shown, the optical imaging lens comprises, from the object side to the image side, a glass screen E1, a first lens E2, an aperture STO, a second lens E3, a third lens E4, a filter E5 and an imaging surface S11.

[0120] Glass screen E1 has an object-side surface S1 and an image-side surface S2. First lens E2 has negative power, with its object-side surface S3 being concave and its image-side surface S4 being concave. Second lens E3 has positive power, with its object-side surface S5 being convex and its image-side surface S6 being convex. Third lens E4 has negative power, with its object-side surface S7 being convex and its image-side surface S8 being concave. Filter E5 has an object-side surface S9 and an image-side surface S10. Light from an object sequentially passes through surfaces S1 to S10 and is ultimately imaged on imaging surface S11.

[0121] In this example, the total effective focal length f of the optical imaging lens is 0.34 mm, the total length TTL of the optical imaging lens is 2.65 mm, half the diagonal length ImgH of the effective pixel area on the imaging surface S11 of the optical imaging lens is 0.76 mm, the maximum half field of view Semi-FOV of the optical imaging lens is 64.1°, and the aperture value Fno of the optical imaging lens is 2.39.

[0122] Table 9 shows the basic parameters of the optical imaging lens of Example 5, where the units of curvature radius, thickness / distance, and focal length are all in millimeters (mm). Table 10 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 5, where the surface shape of each aspherical surface can be defined by formula (1) given in Example 1 above.

[0123]

[0124] Table 9

[0125] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S3 2.2380E+00 -7.2555E+00 2.1723E+01 -5.2227E+01 9.6317E+01 -1.3371E+02 1.3879E+02 -1.0729E+02 6.1317E+01 S4 2.8302E+01 -2.1923E+03 1.1281E+05 -3.6763E+06 8.0941E+07 -1.2562E+09 1.4095E+10 -1.1576E+11 6.9669E+11 S5 -1.5146E+01 1.5964E+03 7.3020E+05 -3.2712E+08 5.5118E+10 -4.9215E+12 2.4534E+14 -6.4473E+15 6.9606E+16 S6 8.5429E+01 -3.2030E+04 5.1583E+06 -5.0170E+08 3.2689E+10 -1.4946E+12 4.9147E+13 -1.1761E+15 2.0494E+16 S7 -4.3420E+01 -2.2324E+02 1.6986E+05 -7.7028E+06 -1.9757E+08 3.7342E+10 -1.9992E+12 6.2784E+13 -1.3027E+15 S8 -4.2036E+01 1.5830E+03 -5.8665E+04 1.7829E+06 -4.1029E+07 6.9872E+08 -8.7836E+09 8.1510E+10 -5.5565E+11

[0126] Table 10

[0127] Figure 10A 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 passing through the lens. Figure 10B The astigmatism curve of the optical imaging lens of Example 5 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 10C The distortion curve of the optical imaging lens of Example 5 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 10D 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 lens. 10A to 10D It can be seen that the optical imaging lens provided in Example 5 can achieve good imaging quality.

[0128] Example 6

[0129] The following reference Figures 11 to 12D An optical imaging lens according to Example 6 of the present application is described. Figure 11A schematic structural diagram of an optical imaging lens according to Example 6 of the present application is shown.

[0130] like Figure 11 As shown, the optical imaging lens comprises, from the object side to the image side, a glass screen E1, a first lens E2, an aperture STO, a second lens E3, a third lens E4, a filter E5 and an imaging surface S11.

[0131] Glass screen E1 has an object-side surface S1 and an image-side surface S2. The first lens E2 has negative power, with its object-side surface S3 being concave and its image-side surface S4 being convex. The second lens E3 has positive power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The third lens E4 has positive power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The filter E5 has an object-side surface S9 and an image-side surface S10. Light from the object sequentially passes through each surface S1 to S10 and is ultimately imaged on the imaging surface S11.

[0132] In this example, the total effective focal length f of the optical imaging lens is 0.34 mm, the total length TTL of the optical imaging lens is 2.65 mm, half the diagonal length ImgH of the effective pixel area on the imaging surface S11 of the optical imaging lens is 0.75 mm, the maximum half field of view Semi-FOV of the optical imaging lens is 61.7°, and the aperture value Fno of the optical imaging lens is 2.33.

[0133] Table 11 shows the basic parameters of the optical imaging lens of Example 6, where the units of curvature radius, thickness / distance, and focal length are all in millimeters (mm). Table 12 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 6, where the surface shape of each aspherical surface can be defined by formula (1) given in Example 1 above.

[0134]

[0135]

[0136] Table 11

[0137] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S3 2.2674E+00 -9.4642E+00 3.4633E+01 -9.2619E+01 1.7768E+02 -2.4727E+02 2.5270E+02 -1.9077E+02 1.0611E+02 S4 3.8318E+01 -2.6786E+03 1.1689E+05 -3.2595E+06 6.1492E+07 -8.1432E+08 7.7405E+09 -5.3394E+10 2.6744E+11 S5 -4.0539E+01 1.8913E+04 -5.1438E+06 8.0584E+08 -7.6920E+10 4.5350E+12 -1.6105E+14 3.1541E+15 -2.6129E+16 S6 -5.5759E+01 -1.7518E+03 5.0467E+05 -3.7413E+07 1.4397E+09 -2.3389E+10 -4.7175E+11 3.7800E+13 -1.0765E+15 S7 2.9582E+01 -8.3181E+03 7.4319E+05 -4.0214E+07 1.4766E+09 -3.8447E+10 7.2169E+11 -9.7661E+12 9.3753E+13 S8 -2.6337E+01 1.9176E+02 1.5807E+04 -8.4416E+05 2.2584E+07 -3.9243E+08 4.7510E+09 -4.1176E+10 2.5736E+11

[0138] Table 12

[0139] Figure 12A 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 passing through the lens. Figure 12B The astigmatism curve of the optical imaging lens of Example 6 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 12C The distortion curve of the optical imaging lens of Example 6 is shown, which represents the distortion values ​​corresponding to different image heights. Figure 12DThe chromatic aberration curve of the optical imaging lens of Example 6 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. 12A to 12D It can be seen that the optical imaging lens provided in Example 6 can achieve good imaging quality.

[0140] Example 7

[0141] The following reference Figures 13 to 14D An optical imaging lens according to Example 7 of the present application is described. Figure 13 A schematic structural diagram of an optical imaging lens according to Example 7 of the present application is shown.

[0142] like Figure 13 As shown, the optical imaging lens comprises, from the object side to the image side, a glass screen E1, a first lens E2, an aperture STO, a second lens E3, a third lens E4, a filter E5 and an imaging surface S11.

[0143] Glass screen E1 has an object-side surface S1 and an image-side surface S2. First lens E2 has negative power, with its object-side surface S3 being concave and its image-side surface S4 being convex. Second lens E3 has positive power, with its object-side surface S5 being convex and its image-side surface S6 being convex. Third lens E4 has negative power, with its object-side surface S7 being convex and its image-side surface S8 being concave. Filter E5 has an object-side surface S9 and an image-side surface S10. Light from an object sequentially passes through surfaces S1 to S10 and is ultimately imaged on imaging surface S11.

[0144] In this example, the total effective focal length f of the optical imaging lens is 0.30 mm, the total length TTL of the optical imaging lens is 2.65 mm, half the diagonal length ImgH of the effective pixel area on the imaging surface S11 of the optical imaging lens is 0.76 mm, the maximum half field of view Semi-FOV of the optical imaging lens is 64.8°, and the aperture value Fno of the optical imaging lens is 1.68.

[0145] Table 13 shows the basic parameters of the optical imaging lens of Example 7, where the units of curvature radius, thickness / distance, and focal length are all in millimeters (mm). Table 14 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 7, where the surface shape of each aspherical surface can be defined by formula (1) given in Example 1 above.

[0146]

[0147] Table 13

[0148] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S3 2.6067E+00 -1.1218E+01 4.2216E+01 -1.1507E+02 2.2326E+02 -3.1219E+02 3.1876E+02 -2.3930E+02 1.3187E+02 S4 5.6799E+01 -4.9671E+03 2.6808E+05 -9.2051E+06 2.1370E+08 -3.4860E+09 4.0901E+10 -3.4921E+11 2.1719E+12 S5 -1.2283E+01 1.6504E+03 -4.0977E+04 -2.6863E+07 3.9506E+09 -2.5516E+11 8.7145E+12 -1.5315E+14 1.0910E+15 S6 2.1911E+02 -5.4241E+04 7.1420E+06 -5.9015E+08 3.3027E+10 -1.3037E+12 3.7135E+13 -7.7153E+14 1.1693E+16 S7 -2.1183E+01 -2.7843E+03 3.5204E+05 -1.8074E+07 4.0819E+08 3.2488E+09 -5.1228E+11 1.7023E+13 -3.2623E+14 S8 -5.7494E+01 3.4993E+03 -1.6915E+05 5.6761E+06 -1.3293E+08 2.2200E+09 -2.6891E+10 2.3828E+11 -1.5432E+12

[0149] Table 14

[0150] Figure 14AThe 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 passing through the lens. Figure 14B 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 14C The distortion curve of the optical imaging lens of Example 7 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 14D 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 lens. 14A to 14D It can be seen that the optical imaging lens provided in Example 7 can achieve good imaging quality.

[0151] Example 8

[0152] The following reference Figures 15 to 16D An optical imaging lens according to Example 8 of the present application is described. Figure 15 A schematic structural diagram of an optical imaging lens according to Example 8 of the present application is shown.

[0153] like Figure 15 As shown, the optical imaging lens comprises, from the object side to the image side, a glass screen E1, a first lens E2, an aperture STO, a second lens E3, a third lens E4, a filter E5 and an imaging surface S11.

[0154] Glass screen E1 has an object-side surface S1 and an image-side surface S2. The first lens E2 has negative power, with its object-side surface S3 being concave and its image-side surface S4 being convex. The second lens E3 has positive power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The third lens E4 has negative power, with its object-side surface S7 being concave and its image-side surface S8 being concave. The filter E5 has an object-side surface S9 and an image-side surface S10. Light from the object sequentially passes through each surface S1 to S10 and is ultimately imaged on the imaging surface S11.

[0155] In this example, the total effective focal length f of the optical imaging lens is 0.35 mm, the total length TTL of the optical imaging lens is 2.65 mm, half the diagonal length ImgH of the effective pixel area on the imaging surface S11 of the optical imaging lens is 0.85 mm, the maximum half field of view Semi-FOV of the optical imaging lens is 64.7°, and the aperture value Fno of the optical imaging lens is 1.84.

[0156] Table 15 shows the basic parameters of the optical imaging lens of Example 8, where the units of curvature radius, thickness / distance, and focal length are all in millimeters (mm). Table 16 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 8, where the surface shape of each aspherical surface can be defined by formula (1) given in Example 1 above.

[0157]

[0158] Table 15

[0159] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S3 2.3965E+00 -9.0344E+00 3.1160E+01 -8.2597E+01 1.6158E+02 -2.3156E+02 2.4347E+02 -1.8800E+02 1.0614E+02 S4 4.1310E+01 -3.2922E+03 1.6682E+05 -5.3767E+06 1.1671E+08 -1.7717E+09 1.9254E+10 -1.5162E+11 8.6650E+11 S5 -5.5246E+00 -3.5463E+02 2.6277E+05 -4.7712E+07 4.2636E+09 -2.1310E+11 6.0374E+12 -9.0306E+13 5.5174E+14 S6 1.2379E+02 -2.5208E+04 3.0414E+06 -2.3428E+08 1.2265E+10 -4.5272E+11 1.2043E+13 -2.3338E+14 3.2954E+15 S7 -1.4202E+01 1.0506E+03 -1.5395E+05 1.4199E+07 -8.1562E+08 3.1147E+10 -8.2473E+11 1.5484E+13 -2.0764E+14 S8 -2.1318E+01 8.4819E+02 -3.2377E+04 8.7536E+05 -1.6395E+07 2.1701E+08 -2.0686E+09 1.4353E+10 -7.2543E+10

[0160] Table 16

[0161] Figure 16A 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 passing through the lens. Figure 16B The astigmatism curve of the optical imaging lens of Example 8 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 16C The distortion curve of the optical imaging lens of Example 8 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 16D 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 lens. 16A to 16D It can be seen that the optical imaging lens provided in Example 8 can achieve good imaging quality.

[0162] Example 9

[0163] The following reference Figures 17 to 18D An optical imaging lens according to Example 9 of the present application is described. Figure 17 A schematic structural diagram of an optical imaging lens according to Example 9 of the present application is shown.

[0164] like Figure 17 As shown, the optical imaging lens comprises, from the object side to the image side, a glass screen E1, a first lens E2, an aperture STO, a second lens E3, a third lens E4, a filter E5 and an imaging surface S11.

[0165] Glass screen E1 has an object-side surface S1 and an image-side surface S2. The first lens E2 has negative power, with its object-side surface S3 being concave and its image-side surface S4 being convex. The second lens E3 has positive power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The third lens E4 has negative power, with its object-side surface S7 being concave and its image-side surface S8 being concave. The filter E5 has an object-side surface S9 and an image-side surface S10. Light from the object sequentially passes through each surface S1 to S10 and is ultimately imaged on the imaging surface S11.

[0166] In this example, the total effective focal length f of the optical imaging lens is 0.37 mm, the total length TTL of the optical imaging lens is 2.50 mm, half the diagonal length ImgH of the effective pixel area on the imaging surface S11 of the optical imaging lens is 0.85 mm, the maximum half field of view Semi-FOV of the optical imaging lens is 62.7°, and the aperture value Fno of the optical imaging lens is 1.84.

[0167] Table 17 shows the basic parameters of the optical imaging lens of Example 9, where the units of curvature radius, thickness / distance, and focal length are all in millimeters (mm). Table 18 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 9, where the surface shape of each aspherical surface can be defined by formula (1) given in Example 1 above.

[0168]

[0169] Table 17

[0170] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S3 2.4689E+00 -8.7088E+00 2.5523E+01 -5.4507E+01 8.4539E+01 -9.7246E+01 8.5159E+01 -5.8024E+01 3.1034E+01 S4 4.0224E+01 -3.6989E+03 2.3078E+05 -9.3417E+06 2.5574E+08 -4.8906E+09 6.6769E+10 -6.5858E+11 4.7017E+12 S5 -2.9141E+01 9.5281E+03 -1.8628E+06 2.1853E+08 -1.6132E+10 7.5359E+11 -2.1577E+13 3.4477E+14 -2.3498E+15 S6 1.0268E+02 -1.5294E+04 1.2260E+06 -4.8290E+07 7.4301E+07 9.2299E+10 -5.1522E+12 1.5605E+14 -3.0612E+15 S7 2.7549E+00 -1.4982E+03 5.4646E+04 3.4584E+06 -4.7868E+08 2.6275E+10 -8.8751E+11 2.0305E+13 -3.2474E+14 S8 -2.6856E+01 1.4755E+03 -6.9487E+04 2.1739E+06 -4.5673E+07 6.6692E+08 -6.9444E+09 5.2297E+10 -2.8562E+11

[0171] Table 18

[0172] Figure 18A The axial chromatic aberration curve of the optical imaging lens of Example 9 is shown, which indicates the deviation of the focal point of light of different wavelengths passing through the lens. Figure 18B The astigmatism curve of the optical imaging lens of Example 9 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 18C The distortion curve of the optical imaging lens of Example 9 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 18D The chromatic aberration curve of the optical imaging lens of Example 9 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. 18A to 18D It can be seen that the optical imaging lens provided in Example 9 can achieve good imaging quality.

[0173] Example 10

[0174] The following reference Figures 19 to 20D An optical imaging lens according to Example 10 of the present application is described. Figure 19 A schematic structural diagram of an optical imaging lens according to Example 10 of the present application is shown.

[0175] like Figure 19 As shown, the optical imaging lens comprises, from the object side to the image side, a glass screen E1, a first lens E2, an aperture STO, a second lens E3, a third lens E4, a filter E5 and an imaging surface S11.

[0176] Glass screen E1 has an object-side surface S1 and an image-side surface S2. The first lens E2 has negative power, with its object-side surface S3 being concave and its image-side surface S4 being convex. The second lens E3 has positive power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The third lens E4 has negative power, with its object-side surface S7 being concave and its image-side surface S8 being concave. The filter E5 has an object-side surface S9 and an image-side surface S10. Light from the object sequentially passes through each surface S1 to S10 and is ultimately imaged on the imaging surface S11.

[0177] In this example, the total effective focal length f of the optical imaging lens is 0.33 mm, the total length TTL of the optical imaging lens is 2.80 mm, half the diagonal length ImgH of the effective pixel area on the imaging surface S11 of the optical imaging lens is 0.85 mm, the maximum half field of view Semi-FOV of the optical imaging lens is 65.8°, and the aperture value Fno of the optical imaging lens is 1.85.

[0178] Table 19 shows the basic parameters of the optical imaging lens of Example 10, where the units of curvature radius, thickness / distance, and focal length are all in millimeters (mm). Table 20 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 10, where the surface shape of each aspherical surface can be defined by formula (1) given in Example 1 above.

[0179]

[0180] Table 19

[0181] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S3 2.3511E+00 -8.7401E+00 2.8921E+01 -7.1705E+01 1.2886E+02 -1.6772E+02 1.5905E+02 -1.1028E+02 5.5754E+01 S4 4.4855E+01 -3.3674E+03 1.5937E+05 -4.8112E+06 9.8325E+07 -1.4149E+09 1.4689E+10 -1.1137E+11 6.1744E+11 S5 -9.8529E+00 1.8122E+03 -2.1415E+05 7.6097E+06 6.2355E+08 -7.5217E+10 3.1566E+12 -6.1506E+13 4.6482E+14 S6 1.4445E+02 -2.9552E+04 3.4883E+06 -2.6135E+08 1.3285E+10 -4.7613E+11 1.2307E+13 -2.3195E+14 3.1887E+15 S7 -1.3307E+01 9.0945E+02 -1.8772E+05 2.1272E+07 -1.4023E+09 5.9727E+10 -1.7404E+12 3.5726E+13 -5.2237E+14 S8 -1.5744E+01 2.7968E+02 -2.9323E+03 -3.9645E+04 2.2130E+06 -4.3512E+07 5.1976E+08 -4.1914E+09 2.3619E+10

[0182] Table 20

[0183] Figure 20A The axial chromatic aberration curve of the optical imaging lens of Example 10 is shown, which indicates the deviation of the focal point of light of different wavelengths passing through the lens. Figure 20B The astigmatism curve of the optical imaging lens of Example 10 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 20C The distortion curve of the optical imaging lens of Example 10 is shown, which represents the distortion values ​​corresponding to different image heights. Figure 20D The chromatic aberration curve of the optical imaging lens of Example 10 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. 20A to 20D It can be seen that the optical imaging lens provided in Example 10 can achieve good imaging quality.

[0184] In summary, Examples 1 to 10 respectively satisfy the relationships shown in Table 21.

[0185] Conditional formula\Example 1 2 3 4 5 6 7 8 9 10 f / EPD 1.98 1.81 1.94 2.15 2.39 2.33 1.68 1.84 1.84 1.85 EPD / ImgH 0.20 0.22 0.23 0.21 0.19 0.19 0.24 0.22 0.24 0.21 f2 / f1 -0.41 -0.43 -0.56 -0.42 -0.38 -0.42 -0.25 -0.24 -0.21 -0.24 f / R6 0.82 0.85 0.98 0.90 0.93 0.93 0.83 0.67 0.67 0.63 |R4| / R3 0.51 0.65 0.47 0.32 0.28 0.50 0.29 0.29 0.26 0.28 (R2+R1) / (R2-R1) 1.44 1.23 0.39 0.67 0.80 1.28 1.40 1.42 1.60 1.42 f123 / |f3| 0.19 0.15 0.36 0.34 0.35 0.15 0.31 0.47 0.46 0.44 T12 / CT1 0.72 0.56 0.59 0.68 0.66 0.74 0.57 0.55 0.45 0.59 ET2 / CT2 0.61 0.62 0.59 0.60 0.60 0.59 0.59 0.57 0.59 0.58 SAG31 / SAG22 0.32 0.33 0.53 0.40 0.40 0.34 0.37 0.43 0.45 0.41 ∑AT / SD 0.76 0.66 0.70 0.80 0.79 0.85 0.71 0.63 0.54 0.66 DT31 / (DT21+DT22) 0.71 0.67 0.63 0.67 0.71 0.73 0.65 0.66 0.68 0.66 <![CDATA[tan(Semi-FOV) / TTL(mm -1 )]]> 0.81 0.84 0.79 0.79 0.78 0.70 0.80 0.80 0.78 0.79

[0186] Table 21

[0187] 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.

[0188] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the invention herein is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the inventive concept. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features having similar functions disclosed in this application.

Claims

1. An optical imaging lens, characterized in that: Along the optical axis from the object side to the image side, they include: a first lens having negative optical power, wherein the object-side surface and the image-side surface are concave; a second lens element having positive optical power, with a convex object-side surface and a convex image-side surface; and The third lens has a negative optical power, with a convex object-side surface and a concave image-side surface; The optical imaging lens includes three lenses having optical power, and the total effective focal length f of the optical imaging lens, the entrance pupil diameter EPD of the optical imaging lens, the effective focal length f2 of the second lens, the effective focal length f1 of the first lens, the maximum half field of view (Semi-FOV) of the optical imaging lens, the distance TTL from the object side surface of the first lens to the imaging plane of the optical imaging lens on the optical axis, 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 satisfy the following conditional formula: 0.32 mm≤f<0.4 mm; 1.94≤f / EPD<2.4; -0.6<f2 / f1≤-0.38; 0.6 mm -1 <tan(Semi-FOV) / TTL≤0.79 mm -1 ; 0.39≤(R2+R1) / (R2-R1)≤0.

80.

2. The optical imaging lens according to claim 1, wherein: An entrance pupil diameter EPD of the optical imaging lens and half the diagonal length of an effective pixel area on an imaging surface of the optical imaging lens ImgH satisfy the following: 0.19≤EPD / ImgH≤0.

23.

3. The optical imaging lens according to claim 1, wherein: The total effective focal length f of the optical imaging lens and the curvature radius R6 of the image-side surface of the third lens satisfy: 0.90≤f / R6<1.

0.

4. The optical imaging lens according to claim 1, wherein: A curvature radius R3 of the object-side surface of the second lens and a curvature radius R4 of the image-side surface of the second lens satisfy: 0.28≤|R4| / R3≤0.

47.

5. The optical imaging lens according to claim 1, wherein: The combined focal length f123 of the first lens, the second lens, and the third lens and the effective focal length f3 of the third lens satisfy the following: 0.34≤f123 / |f3|≤0.

36.

6. The optical imaging lens according to claim 1, wherein: A center thickness CT1 of the first lens on the optical axis and a distance T12 between the first lens and the second lens on the optical axis satisfy the following: 0.59≤T12 / CT1≤0.

68.

7. The optical imaging lens according to claim 1, wherein: An edge thickness ET2 of the second lens and a center thickness CT2 of the second lens on the optical axis satisfy the following: 0.59≤ET2 / CT2≤0.

60.

8. The optical imaging lens according to claim 1, wherein: The distance SAG31 from 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 on the optical axis and the distance SAG22 from the intersection of the image side surface of the second lens and the optical axis to the effective radius vertex of the image side surface of the second lens on the optical axis satisfy: 0.40≤SAG31 / SAG22≤0.

53.

9. The optical imaging lens according to claim 1, wherein: The optical imaging lens further includes a diaphragm, The sum of the distances ΣAT between any two adjacent lenses from the first lens to the third lens on the optical axis and the distance SD from the aperture to the image side surface of the third lens on the optical axis satisfy the following: 0.70≤ΣAT / SD≤0.

80.

10. The optical imaging lens according to claim 1, wherein: The effective semi-aperture DT31 of the object-side surface of the third lens, the effective semi-aperture DT21 of the object-side surface of the second lens, and the effective semi-aperture DT22 of the image-side surface of the second lens satisfy the following: 0.6<DT31 / (DT21+DT22)≤0.

71.

11. The optical imaging lens according to claim 1, wherein: The optical imaging lens further includes a glass screen, which is arranged between the object side and the first lens.

Images