Optical imaging lens

Abstract

The present application discloses 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 positive optical power; a second lens with negative optical power; a third lens with optical power; a fourth lens with optical power, the image side surface of which is concave; and a fifth lens with optical power. Among them, half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens, the distance TTL from the object side surface of the first lens to the imaging surface on the optical axis, and the total effective focal length f of the optical imaging lens satisfy: ImgH / (TTL / f) > 4.5 mm, enabling the optical imaging lens to have characteristics such as long focal length and large image surface.

Description

Technical Field

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

[0002] In recent years, with the rapid development of smart terminals such as mobile phones, the improvement of camera functions has become the direction of performance optimization of mobile devices such as mobile phones. For example, the rear camera modules of existing high-end flagship mobile phones usually use a combination of ultra-clear main camera, ultra-wide-angle and telephoto lenses, and the "baton-style" method is mostly used for zooming between the lenses, that is, zooming is achieved by switching between "wide-angle-main camera-telephoto". Through the above method, the camera module can achieve a 5x or even 10x zoom function.

[0003] The focal length of a telephoto lens is an important factor affecting the zoom range of an optical imaging lens. The larger the focal length of a telephoto lens, the larger the zoom range that the optical imaging lens can achieve. Usually, in order to achieve a larger zoom range, telephoto lenses often use periscope telephotos, and their focal lengths are generally between 15-18mm. This type of telephoto lens combined with a short-focus lens can achieve the 10x zoom function of a mainstream optical imaging lens.

[0004] In addition, the longer the focal length of an optical imaging lens, the greater its magnification, and the more suitable it is for photographing distant objects. For example, it is more advantageous to choose a telephoto optical imaging lens when photographing scenery. However, the imaging surface size of a conventional telephoto lens is not large. Therefore, how to balance the telephoto performance with a large image surface size is an urgent problem to be solved in zoom optical imaging lenses. Summary of the invention

[0005] The present application provides an optical imaging lens that can be applied to portable electronic products and can at least solve or partially solve at least one of the above-mentioned shortcomings in the prior art, such as an optical imaging lens with super telephoto and super large image surface.

[0006] One aspect of the present application provides an optical imaging lens, which may include, in order from the object side to the image side along the optical axis: a first lens with positive optical power; a second lens with negative optical power; a third lens with optical power; a fourth lens with optical power, whose image side surface is concave; and a fifth lens with optical power; wherein half of the diagonal length of an effective pixel area on an imaging plane of the optical imaging lens ImgH, a distance TTL from the object side surface of the first lens to the imaging plane on the optical axis, and a total effective focal length f of the optical imaging lens satisfy: ImgH / (TTL / f)>4.5mm.

[0007] In one embodiment, the distance TTL from the object side surface of the first lens to the imaging surface on the optical axis and the total effective focal length f of the optical imaging lens may satisfy: 0.8 < TTL / f < 1.0.

[0008] In one embodiment, the effective focal length f1 of the first lens, the effective focal length f2 of the second lens, the effective focal length f3 of the third lens, and the effective focal length f4 of the fourth lens may satisfy: 0.5 < (f3 - f1) / (f2 - f4) < 1.2.

[0009] In one embodiment, the radius of curvature R7 of the object side surface of the fourth lens and the radius of curvature R8 of the image side surface of the fourth lens may satisfy: 0.4 < (R7 - R8) / (R7 + R8) < 0.9.

[0010] In one embodiment, the radius of curvature R1 of the object side surface of the first lens and the radius of curvature R2 of the image side surface of the first lens may satisfy: 1.2 < (R2 - R1) / (R2 + R1) < 3.3.

[0011] In one embodiment, the total effective focal length f of the optical imaging lens may satisfy: 15 mm < f < 20 mm.

[0012] In one embodiment, the maximum field of view FOV of the optical imaging lens may satisfy: 25° < FOV < 30°.

[0013] In one embodiment, the total effective focal length f of the optical imaging lens and the maximum field of view FOV of the optical imaging lens may satisfy: f × tan(FOV / 2) < 5.0 mm.

[0014] In one embodiment, the air space T23 between the second lens and the third lens on the optical axis and the air space T45 between the fourth lens and the fifth lens on the optical axis may satisfy: 1.0 < T45 / T23 < 3.2.

[0015] In one embodiment, the maximum effective semi-aperture DT11 of the object side surface of the first lens and the maximum effective semi-aperture DT51 of the object side surface of the fifth lens may satisfy: 1.1 < DT11 / DT51 < 1.4.

[0016] In one embodiment, the maximum effective semi-aperture DT12 of the image side surface of the first lens and the maximum effective semi-aperture DT42 of the image side surface of the fourth lens may satisfy: 1.2 < DT12 / DT42 < 1.5.

[0017] In one embodiment, the distance TTL from the object side surface of the first lens to the imaging surface on the optical axis and the distance BFL from the image side surface of the fifth lens to the imaging surface on the optical axis may satisfy: 1.9 < TTL / BFL < 2.4.

[0018] In one embodiment, the combined focal length f12 of the first lens and the second lens and the combined focal length f34 of the third lens and the fourth lens may satisfy: 0.1 < f12 / f34 < 1.6.

[0019] On the other hand, the present application provides an optical imaging lens which may sequentially include, from the object side to the image side along the optical axis: a first lens with a positive optical power; a second lens with a negative optical power; a third lens with an optical power; a fourth lens with an optical power, the image side surface of which is concave; and a fifth lens with an optical power; wherein, the total effective focal length f of the optical imaging lens may satisfy: 15 mm < f < 20 mm.

[0020] In one embodiment, the distance TTL from the object side surface of the first lens to the imaging surface on the optical axis and the total effective focal length f of the optical imaging lens may satisfy: 0.8 < TTL / f < 1.0.

[0021] In one embodiment, the effective focal length f1 of the first lens, the effective focal length f2 of the second lens, the effective focal length f3 of the third lens, and the effective focal length f4 of the fourth lens may satisfy: 0.5 < (f3 - f1) / (f2 - f4) < 1.2.

[0022] In one embodiment, the radius of curvature R7 of the object side surface of the fourth lens and the radius of curvature R8 of the image side surface of the fourth lens may satisfy: 0.4 < (R7 - R8) / (R7 + R8) < 0.9.

[0023] In one embodiment, the radius of curvature R1 of the object side surface of the first lens and the radius of curvature R2 of the image side surface of the first lens may satisfy: 1.2 < (R2 - R1) / (R2 + R1) < 3.3.

[0024] In one embodiment, half of the diagonal length ImgH of the effective pixel region on the imaging surface of the optical imaging lens, the distance TTL from the object side surface of the first lens to the imaging surface on the optical axis, and the total effective focal length f of the optical imaging lens satisfy: ImgH / (TTL / f) > 4.5 mm.

[0025] In one embodiment, the maximum field of view FOV of the optical imaging lens may satisfy: 25° < FOV < 30°.

[0026] In one embodiment, the total effective focal length f of the optical imaging lens and the maximum field of view FOV of the optical imaging lens may satisfy: f × tan(FOV / 2) < 5.0 mm.

[0027] In one embodiment, the air gap T23 between the second lens and the third lens on the optical axis and the air gap T45 between the fourth lens and the fifth lens on the optical axis may satisfy: 1.0 < T45 / T23 < 3.2.

[0028] In one embodiment, the maximum effective semi-aperture DT11 of the object side surface of the first lens and the maximum effective semi-aperture DT51 of the object side surface of the fifth lens may satisfy: 1.1 < DT11 / DT51 < 1.4.

[0029] In one embodiment, the maximum effective semi-aperture DT12 of the image side surface of the first lens and the maximum effective semi-aperture DT42 of the image side surface of the fourth lens may satisfy: 1.2 < DT12 / DT42 < 1.5.

[0030] In one embodiment, the distance TTL from the object side surface of the first lens to the imaging surface on the optical axis and the distance BFL from the image side surface of the fifth lens to the imaging surface on the optical axis may satisfy: 1.9 < TTL / BFL < 2.4.

[0031] In one embodiment, the combined focal length f12 of the first lens and the second lens and the combined focal length f34 of the third lens and the fourth lens may satisfy: 0.1 < f12 / f34 < 1.6.

[0032] The optical imaging lens provided in this application uses multiple lenses, such as the first lens to the fifth lens. By reasonably controlling the relationship between the total optical length, the total effective focal length of the optical imaging system, and half of the diagonal length of the effective pixel area on the imaging surface, and optimizing the optical power, surface type, curvature radius, and effective focal length of each lens, the optical imaging lens can have a large imaging surface and high imaging quality while achieving ultra-long focal length. At the same time, the structure of each lens is compact, the molding and processing performance is good, and the production yield of the camera module can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In conjunction with the accompanying drawings, through the following detailed description of non-limiting embodiments, other features, objectives, and advantages of this application will become more apparent. In the drawings:

[0034] Figure 1 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 1 of this application;

[0035] 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;

[0036] Figure 3 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 2 of this application;

[0037] 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;

[0038] Figure 5 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 3 of the present application;

[0039] Figures 6A to 6D Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Embodiment 3;

[0040] Figure 7 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 4 of the present application;

[0041] Figures 8A to 8D Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Embodiment 4;

[0042] Figure 9 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 5 of the present application;

[0043] Figures 10A to 10D Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Embodiment 5;

[0044] Figure 11 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 6 of the present application;

[0045] Figures 12A to 12D Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Embodiment 6;

[0046] Figure 13 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 7 of the present application;

[0047] Figures 14A to 14D Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Embodiment 7;

[0048] Figure 15 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 8 of the present application; and

[0049] Figures 16A to 16D Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Embodiment 8. Detailed implementation manners

[0050] To better understand 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 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.

[0051] It should be noted that in this specification, the expressions such as first, second, third, etc. are only used to distinguish one feature from another feature and do not represent any limitation on the features. Therefore, without departing from the teachings of the present application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0052] In the drawings, for the sake of convenience of illustration, the thickness, size and shape of the lens have been slightly exaggerated. Specifically, the spherical or aspherical shapes shown in the drawings are shown by way of example. That is, the spherical or aspherical shapes are not limited to the spherical or aspherical shapes shown in the drawings. The drawings are only examples and are not drawn to an exact scale.

[0053] 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 to be 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.

[0054] It should also be understood that the terms "comprises", "comprising", "has", "including" and / or "including having", when used in this specification, indicate the presence of the stated features, elements and / or components, but do not exclude the presence or addition of one or more other features, elements, components and / or combinations thereof. In addition, when an expression such as "at least one of..." appears after the 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.

[0055] 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.

[0056] 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 following will describe the present application in detail with reference to the drawings and in combination with the embodiments.

[0057] The features, principles and other aspects of the present application will be described in detail below.

[0058] The optical imaging lens according to an exemplary embodiment of the present application may include five lenses with optical powers, 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. An air gap may be provided between each adjacent two of the first lens to the fifth lens.

[0059] In an exemplary embodiment, the first lens may have a positive optical power; the second lens may have a negative optical power; the third lens has a positive optical power or a negative optical power; the fourth lens has a positive optical power or a negative optical power, and its image side is concave; and the fifth lens has a positive optical power or a negative optical power. Among them, the first lens having a positive optical power is conducive to the convergence of light rays in the field of view of the optical imaging system, the second lens having a negative optical power is conducive to compensating for the spherical aberration of the first lens, and the concave image side of the fourth lens is conducive to compensating for the spherical aberration of the first lens to the third lens.

[0060] In an exemplary embodiment, the object side of the first lens may be convex and the image side may be convex.

[0061] In an exemplary embodiment, the image side of the second lens may be concave.

[0062] In an exemplary embodiment, the object side of the fourth lens may be convex and the image side may be concave.

[0063] In an exemplary embodiment, half of the diagonal length ImgH of the effective pixel region on the imaging surface of the optical imaging lens, the distance TTL from the object side of the first lens to the imaging surface on the optical axis, and the total effective focal length f of the optical imaging lens satisfy: ImgH / (TTL / f) > 4.5 mm. For example, 4.5 mm < ImgH / (TTL / f) < 5.0 mm. Reasonably controlling the mutual relationship among the optical total length, the total effective focal length, and half of the diagonal length of the effective pixel region on the imaging surface of the optical imaging lens ensures that the optical imaging lens has a large imaging ratio TTL / f while having a large imaging surface, realizing the ultra-long-distance telephoto function of the optical imaging lens.

[0064] In an exemplary embodiment, the distance TTL from the object side surface of the first lens to the imaging surface on the optical axis and the total effective focal length f of the optical imaging lens may satisfy: 0.8 < TTL / f < 1.0. By controlling the ratio of the total optical length of the optical imaging lens to the total effective focal length within a reasonable numerical range, it is possible to effectively ensure that the optical imaging lens has an appropriate telephoto ratio TTL / f, and achieve the long focal length function of the optical imaging lens.

[0065] In an exemplary embodiment, the effective focal length f1 of the first lens, the effective focal length f2 of the second lens, the effective focal length f3 of the third lens, and the effective focal length f4 of the fourth lens may satisfy: 0.5 < (f3 - f1) / (f2 - f4) < 1.2. Reasonably controlling the mutual relationship between the effective focal lengths of the first lens, the second lens, the third lens, and the fourth lens is beneficial to the reasonable distribution of the optical power of each lens in the space of the optical imaging system, and is beneficial to reducing the aberration of the optical imaging lens.

[0066] In an exemplary embodiment, the radius of curvature R7 of the object side surface of the fourth lens and the radius of curvature R8 of the image side surface of the fourth lens may satisfy: 0.4 < (R7 - R8) / (R7 + R8) < 0.9. By controlling the ratio of the radius of curvature of the object side surface to the image side surface of the fourth lens within a reasonable numerical range, it is beneficial to control the astigmatism amount of the object side surface and the image side surface of the fourth lens, and further effectively control the imaging quality of the intermediate field of view and the aperture band of the optical imaging lens.

[0067] In an exemplary embodiment, the radius of curvature R1 of the object side surface of the first lens and the radius of curvature R2 of the image side surface of the first lens may satisfy: 1.2 < (R2 - R1) / (R2 + R1) < 3.3. Reasonably controlling the mutual relationship between the radius of curvature of the object side surface and the image side surface of the first lens is beneficial to controlling the astigmatism amount of the object side surface and the image side surface of the first lens, and further effectively controlling the imaging quality of the intermediate field of view and the aperture band of the optical imaging lens.

[0068] In an exemplary embodiment, the total effective focal length f of the optical imaging lens may satisfy: 15 mm < f < 20 mm. Reasonably controlling the value range of the total effective focal length of the optical imaging lens can ensure that the optical imaging lens has an ultra-long focal length function.

[0069] In an exemplary embodiment, the maximum field of view FOV of the optical imaging lens may satisfy: 25° < FOV < 30°. Reasonably controlling the value range of the maximum field of view of the optical imaging lens can ensure that the optical imaging lens has a relatively large field of view.

[0070] In an exemplary embodiment, the total effective focal length f of the optical imaging lens and the maximum field of view FOV of the optical imaging lens may satisfy: f×tan(FOV / 2) < 5.0 mm. For example, 4.0 mm < f×tan(FOV / 2) < 5.0 mm. By reasonably controlling the relationship between the total effective focal length and the maximum field of view of the optical imaging lens, it is possible to ensure that the optical imaging lens has a large imaging surface.

[0071] In an exemplary embodiment, the air gap T23 between the second lens and the third lens on the optical axis and the air gap T45 between the fourth lens and the fifth lens on the optical axis may satisfy: 1.0 < T45 / T23 < 3.2. By controlling the ratio of the air gaps between the second lens and the third lens and the fourth lens and the fifth lens on the optical axis within a reasonable value range, it is possible to effectively avoid the situation where it is difficult to arrange the spaces of the lenses due to the excessive thicknesses of the second lens, the third lens, the fourth lens, and the fifth lens, facilitating the assembly of the optical imaging lens.

[0072] In an exemplary embodiment, the maximum effective semi-aperture DT11 of the object side surface of the first lens and the maximum effective semi-aperture DT51 of the object side surface of the fifth lens may satisfy: 1.1 < DT11 / DT51 < 1.4. By controlling the ratio of the maximum effective semi-apertures of the object side surfaces of the first lens and the fifth lens within a reasonable value range, it is beneficial for the optical imaging lens to have a large imaging surface and can make the spatial distribution of the optical imaging lens more reasonable.

[0073] In an exemplary embodiment, the maximum effective semi-aperture DT12 of the image side surface of the first lens and the maximum effective semi-aperture DT42 of the image side surface of the fourth lens may satisfy: 1.2 < DT12 / DT42 < 1.5. By controlling the ratio of the maximum effective semi-apertures of the image side surfaces of the first lens and the fourth lens within a reasonable value range, it is beneficial for the optical imaging lens to have a large imaging surface and can make the spatial distribution of the optical imaging lens more reasonable.

[0074] In an exemplary embodiment, the distance TTL from the object side surface of the first lens to the imaging surface on the optical axis and the distance BFL from the image side surface of the fifth lens to the imaging surface on the optical axis may satisfy: 1.9 < TTL / BFL < 2.4. By controlling the ratio of the overall optical length to the back focal length of the optical imaging lens within a reasonable value range, it is beneficial for the overall structural layout of the optical imaging lens.

[0075] In an exemplary embodiment, the combined focal length f12 of the first lens and the second lens and the combined focal length f34 of the third lens and the fourth lens may satisfy: 0.1 < f12 / f34 < 1.6. By controlling the ratio of the combined focal lengths of the first and second lenses to the combined focal lengths of the third and fourth lenses within a reasonable value range, it is beneficial to the reasonable distribution of the optical powers of the first lens, the second lens, the third lens, and the fourth lens in space, and is beneficial to reducing the aberration of the optical imaging lens.

[0076] In an exemplary embodiment, the above optical imaging lens may further include a diaphragm. The diaphragm can be disposed at an appropriate position as needed. For example, the diaphragm can be disposed between the object side and the first 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.

[0077] The present application provides an optical imaging lens having characteristics such as ultra-long focal length and large image plane. The optical imaging lens according to the above embodiments of the present application may employ multiple lenses, such as the five lenses described above. By reasonably distributing the optical powers, surface shapes, central thicknesses of each lens, and the on-axis spacing between each lens, etc., the incident light can be effectively converged, the optical total 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.

[0078] In an exemplary embodiment, at least one of the lens surfaces of each lens is an aspherical surface, that is, at least one of the object side surface of the first lens to the image side surface of the fifth lens is an aspherical surface. The characteristic of an aspherical lens is that the curvature changes continuously from the center of the lens to the periphery of the lens. Different from a spherical lens having 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 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 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 surfaces.

[0079] The present application further provides an imaging device, and its electronic photosensitive element can be a charge-coupled device (CCD) or a complementary metal-oxide-semiconductor element (CMOS). The imaging device can be an independent imaging device such as a digital camera, or an imaging module integrated on a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens described above.

[0080] However, those skilled in the art should understand that without departing from the technical solution claimed in this 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 embodiment, the optical imaging lens is not limited to including five lenses. If necessary, the optical imaging lens may also include other numbers of lenses.

[0081] Specific embodiments of the optical imaging lens applicable to the above embodiments will be further described below with reference to the accompanying drawings.

[0082] Example 1

[0083] The following refers to Figures 1 to 2D Describe the optical imaging lens according to Embodiment 1 of the present application. Figure 1 FIG. is a schematic structural diagram showing the optical imaging lens according to Embodiment 1 of the present application.

[0084] As Figure 1 shown, the optical imaging lens sequentially includes, from the object side to the image side along the optical axis: a diaphragm STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.

[0085] The first lens E1 has a positive optical power, its object surface S1 is convex, and its image surface S2 is convex. The second lens E2 has a negative optical power, its object surface S3 is convex, and its image surface S4 is concave. The third lens E3 has a positive optical power, its object surface S5 is concave, and its image surface S6 is convex. The fourth lens E4 has a negative optical power, its object surface S7 is convex, and its image surface S8 is concave. 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.

[0086] Table 1 shows the basic parameter table of the optical imaging lens of Embodiment 1, where the units of the radius of curvature, thickness, and focal length are all millimeters (mm).

[0087]

[0088]

[0089] Table 1

[0090] In this embodiment, the total effective focal length f of the optical imaging lens is 16.82 mm, the distance TTL on the optical axis from the object side S1 of the first lens E1 to the imaging surface S13 is 15.20 mm, and half of the diagonal length of the effective pixel region on the imaging surface S13 is ImgH = 4.35 mm.

[0091] In Embodiment 1, the object side and the image side 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:

[0092]

[0093] Where x is the sagitta, the distance from the vertex of the aspherical surface when the aspherical surface is at a position with a height of h along the optical axis; c is the paraxial curvature of the aspherical surface, c = 1 / R (that is, 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 aspherical surface. Table 2 below gives the higher-order term coefficients A4, A6, A8, A 10 、A 12 、A 14 、A 16 、A 18 and A 20 .

[0094] Plane number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 4.2972E-03 -1.3833E-04 4.0303E-05 -2.0939E-05 7.6629E-06 -1.8859E-06 2.2778E-07 -1.0568E-08 -7.0272E-11 S2 -1.0839E-02 2.0895E-02 -1.8049E-02 1.0720E-02 -4.4153E-03 1.1981E-03 -2.0141E-04 1.8922E-05 -7.5864E-07 S3 -2.3427E-02 2.5229E-02 -1.9189E-02 1.0921E-02 -4.4784E-03 1.2384E-03 -2.1449E-04 2.0852E-05 -8.6682E-07 S4 -1.5687E-02 9.2062E-03 -5.0414E-03 2.5241E-03 -1.1182E-03 3.8899E-04 -8.8753E-05 1.1285E-05 -6.0045E-07 S5 1.3714E-02 -6.8054E-03 1.1638E-02 -1.2927E-02 8.3056E-03 -3.2635E-03 7.7604E-04 -1.0281E-04 5.8297E-06 S6 -1.0501E-02 9.9159E-03 3.0513E-02 -5.8173E-02 4.6813E-02 -2.1298E-02 5.6797E-03 -8.2841E-04 5.1034E-05 S7 -5.2897E-02 2.1096E-02 4.3790E-02 -8.3942E-02 6.8849E-02 -3.2148E-02 8.8216E-03 -1.3247E-03 8.3957E-05 S8 -3.6144E-02 9.0999E-03 1.6883E-02 -2.6517E-02 2.0907E-02 -9.8846E-03 2.8092E-03 -4.4028E-04 2.9129E-05 S9 -2.5196E-02 2.3955E-03 -1.2089E-04 1.0249E-03 -9.6839E-04 4.4017E-04 -1.1051E-04 1.4859E-05 -8.4167E-07 S10 -1.6397E-02 5.9696E-04 1.0888E-03 -5.7333E-04 1.5747E-04 -2.2793E-05 8.4294E-07 2.1156E-07 -2.2498E-08

[0095] Table 2

[0096] Figure 2A shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 1, which represents the deviation of the convergence points of light rays with different wavelengths after passing through the lens. Figure 2B shows the astigmatism curve of the optical imaging lens of Embodiment 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 Embodiment 1, which represents the distortion magnitude values corresponding to different image heights. Figure 2D shows the longitudinal chromatic aberration curve of the optical imaging lens of Embodiment 1, which represents the deviation of different image heights on the imaging surface 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 Embodiment 1 can achieve good imaging quality.

[0097] Example 2

[0098] The following refers to Figures 3 to 4D to describe the optical imaging lens according to Embodiment 2 of the present application. Figure 3 shows a schematic structural diagram of the optical imaging lens according to Embodiment 2 of the present application.

[0099] As shown Figure 3 in FIG. 1, the optical imaging lens sequentially includes, from the object side to the image side along the optical axis: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.

[0100] The first lens E1 has a positive optical power, its object side surface S1 is convex, and its image side surface S2 is convex. The second lens E2 has a negative optical power, its object side surface S3 is concave, and its image side surface S4 is concave. The third lens E3 has a positive optical power, its object side surface S5 is convex, and its image side surface S6 is convex. The fourth lens E4 has a negative optical power, its object side surface S7 is convex, and its image side surface S8 is concave. The fifth lens E5 has a positive optical 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.

[0101] In this embodiment, the total effective focal length f of the optical imaging lens is 17.35 mm, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S13 is 16.51 mm, and half of the diagonal length of the effective pixel region on the imaging surface S13 is ImgH = 4.36 mm.

[0102] Table 3 shows the basic parameter table of the optical imaging lens of Embodiment 2, where the units of the radius of curvature, thickness, and focal length are all millimeters (mm).

[0103]

[0104] Table 3

[0105] In Embodiment 2, the object side surface and the image side surface of any one of the first lens E1 to the fifth lens E5 are aspherical surfaces. Table 4 below gives the higher-order term coefficients A4, A6, A8, A 10 , A 12 , A 14 , A 16 , A 18 , and A 20 that can be used for the aspherical mirror surfaces S1 - S10 in Embodiment 2.

[0106]

[0107]

[0108] Table 4

[0109] Figure 4A FIG. 5 shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 2, which represents the deviation of the convergence points of light rays of different wavelengths after passing through the lens.Figure 4B The astigmatism curve of the optical imaging lens of Embodiment 2 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 4C The distortion curve of the optical imaging lens of Embodiment 2 is shown, which represents the distortion magnitude values corresponding to different image heights. Figure 4D The 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 plane 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.

[0110] Example 3

[0111] The following refers to Figures 5 to 6D Describe 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.

[0112] As Figure 5 shown, the optical imaging lens sequentially includes, from the object side to the image side along the optical axis: a diaphragm STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.

[0113] The first lens E1 has a positive optical power, its object side surface S1 is a convex surface, and its image side surface S2 is a convex surface. The second lens E2 has a negative optical power, its object side surface S3 is a concave surface, and its image side surface S4 is a concave surface. The third lens E3 has a positive optical power, its object side surface S5 is a convex surface, and its image side surface S6 is a convex surface. The fourth lens E4 has a negative optical power, its object side surface S7 is a convex surface, and its image side surface S8 is a concave surface. The fifth lens E5 has a positive optical power, its object side surface S9 is a convex surface, and its image side surface S10 is a convex surface. The filter E6 has an object side surface S11 and an image side surface S12. Light from the object sequentially passes through each surface S1 to S12 and finally forms an image on the imaging surface S13.

[0114] In this embodiment, the total effective focal length f of the optical imaging lens is 16.78 mm, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S13 is 15.52 mm, and half of the diagonal length of the effective pixel area on the imaging surface S13 is ImgH = 4.36 mm.

[0115] Table 5 shows the basic parameter table of the optical imaging lens of Embodiment 3, where the units of the radius of curvature, thickness, and focal length are all millimeters (mm).

[0116]

[0117]

[0118] Table 5

[0119] In Embodiment 3, both the object side and the image side of any one of the first lens E1 to the fifth lens E5 are aspherical surfaces. Table 6 below gives the higher-order coefficients A4, A6, A8, A 10 , A 12 , A 14 , A 16 , A 18 and A 20 for each of the aspherical surfaces S1 - S10 in Embodiment 3.

[0120] Plane number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 3.1066E-03 1.4995E-05 1.4642E-05 -7.1013E-06 1.0394E-06 1.3816E-07 -7.1223E-08 6.9870E-09 -2.0517E-10 S2 2.2119E-03 1.5488E-04 -2.3707E-04 1.8983E-04 -7.8489E-05 1.6270E-05 -1.7696E-06 9.6744E-08 -2.0961E-09 S3 -1.8755E-02 5.7990E-03 -5.6363E-04 -4.8636E-05 -7.5982E-06 9.1071E-06 -1.6310E-06 1.1572E-07 -2.9590E-09 S4 -2.3834E-02 6.9938E-03 -1.4318E-04 -3.8188E-04 6.9137E-05 2.1439E-06 -7.5724E-07 -9.5703E-08 1.3462E-08 S5 4.7189E-03 -2.8334E-03 2.1884E-03 -1.4591E-03 6.3480E-04 -2.1596E-04 4.7583E-05 -5.6538E-06 2.7329E-07 S6 -1.4887E-02 2.0864E-02 -1.7393E-02 9.7646E-03 -4.0832E-03 1.1699E-03 -2.0900E-04 2.0783E-05 -8.7866E-07 S7 -3.4053E-02 2.8382E-02 -2.1207E-02 1.1769E-02 -4.8061E-03 1.3612E-03 -2.4202E-04 2.3844E-05 -9.8932E-07 S8 -1.2546E-02 5.3204E-03 -1.2084E-03 -9.0793E-05 5.1555E-04 -3.4432E-04 1.1279E-04 -1.8778E-05 1.2507E-06 S9 -7.5324E-03 9.8351E-05 1.2629E-04 -7.0277E-05 3.3547E-05 -1.1149E-05 2.3109E-06 -2.5904E-07 1.1819E-08 S10 -7.3750E-03 -1.9509E-04 2.4336E-04 -1.1956E-04 3.8064E-05 -7.8616E-06 9.9044E-07 -6.6491E-08 1.7018E-09

[0121] Table 6

[0122] 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 longitudinal chromatic aberration curve of the optical imaging lens of Embodiment 3, which represents the deviation of different image heights of light rays on the imaging plane after passing through the lens. According to Figures 6A to 6D it can be seen that the optical imaging lens given in Embodiment 3 can achieve good imaging quality.

[0123] Example 4

[0124] The following refers to Figures 7 to 8D to describe the optical imaging lens according to Embodiment 4 of the present application. Figure 7 shows a schematic structural diagram of the optical imaging lens according to Embodiment 4 of the present application.

[0125] As Figure 7 shown, the optical imaging lens sequentially includes, along the optical axis from the object side to the image side: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.

[0126] The first lens E1 has a positive optical power, its object side S1 is convex, and its image side S2 is convex. The second lens E2 has a negative 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 concave. The fourth lens E4 has a negative optical power, its object side S7 is convex, and its image side S8 is concave. 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.

[0127] In this embodiment, the total effective focal length f of the optical imaging lens is 16.85 mm, the distance TTL on the optical axis from the object side S1 of the first lens E1 to the imaging surface S13 is 15.22 mm, and half of the diagonal length of the effective pixel region on the imaging surface S13 is ImgH = 4.36 mm.

[0128] Table 7 shows the basic parameter table of the optical imaging lens of Embodiment 4, where the units of the radius of curvature, thickness, and focal length are all millimeters (mm).

[0129]

[0130]

[0131] Table 7

[0132] In Embodiment 4, the object side and the image side of any one of the first lens E1 to the fifth lens E5 are aspherical surfaces. Table 8 below gives the higher-order term coefficients A4, A6, A8, A 10 , A 12 , A 14 , A 16 , A 18 , and A 20 that can be used for the aspherical mirror surfaces S1 - S10 in Embodiment 4.

[0133] Plane number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 3.4195E-03 -6.1979E-05 3.1983E-05 -4.4732E-06 -1.7555E-06 7.8515E-07 -1.4105E-07 1.0593E-08 -2.7660E-10 S2 -3.3463E-03 5.0214E-03 -2.3548E-03 7.3268E-04 -1.7054E-04 2.6625E-05 -2.4944E-06 1.2474E-07 -2.5459E-09 S3 -2.6041E-02 1.3543E-02 -4.7088E-03 1.1907E-03 -2.2222E-04 2.8861E-05 -2.3368E-06 1.0262E-07 -1.8379E-09 S4 -2.5731E-02 1.1432E-02 -3.6804E-03 9.6270E-04 -1.9817E-04 3.2602E-05 -3.8534E-06 2.4729E-07 -4.7979E-09 S5 -3.3960E-03 1.0224E-03 -2.8577E-04 -3.0759E-05 1.9471E-05 -3.6521E-06 6.6124E-07 -1.3768E-07 1.1644E-08 S6 -1.3120E-02 5.1281E-03 -1.5641E-03 -8.4593E-05 1.8190E-04 -5.9026E-05 1.0392E-05 -1.0542E-06 4.8452E-08 S7 -2.2762E-02 1.0930E-02 -2.6058E-03 -8.6804E-04 8.6166E-04 -3.1513E-04 6.6006E-05 -7.7156E-06 3.8155E-07 S8 -1.8663E-02 1.1317E-02 -2.9246E-03 -3.4314E-04 7.9652E-04 -3.9872E-04 1.1123E-04 -1.6704E-05 1.0432E-06 S9 -3.8667E-02 5.3032E-03 1.1052E-03 -1.2833E-03 6.5733E-04 -2.1272E-04 4.4802E-05 -5.3336E-06 2.6574E-07 S10 -3.2277E-02 5.1415E-03 -1.7383E-04 -3.4212E-04 1.7335E-04 -4.8077E-05 8.5477E-06 -8.7660E-07 4.0231E-08

[0134] Table 8

[0135] Figure 8A shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 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 Embodiment 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 Embodiment 4, which represents the distortion magnitude values corresponding to different image heights. Figure 8DThe chromatic aberration curve of magnification of the optical imaging lens according to Embodiment 4 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to Figures 8A to 8D it can be known that the optical imaging lens given in Embodiment 4 can achieve good imaging quality.

[0136] Example 5

[0137] The following will refer to Figures 9 to 10D to describe the optical imaging lens according to Embodiment 5 of the present application. Figure 9 The structural schematic diagram of the optical imaging lens according to Embodiment 5 of the present application is shown.

[0138] As Figure 9 shown, the optical imaging lens sequentially includes, from the object side to the image side along the optical axis: a diaphragm STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging plane S13.

[0139] The first lens E1 has a positive optical power, its object side surface S1 is a convex surface, and its image side surface S2 is a convex surface. The second lens E2 has a negative optical power, its object side surface S3 is a convex surface, and its image side surface S4 is a concave surface. The third lens E3 has a positive optical power, its object side surface S5 is a convex surface, and its image side surface S6 is a convex surface. The fourth lens E4 has a negative optical power, its object side surface S7 is a convex surface, and its image side surface S8 is a concave surface. The fifth lens E5 has a negative optical power, its object side surface S9 is a convex surface, and its image side surface S10 is a concave surface. The filter E6 has an object side surface S11 and an image side surface S12. Light from the object sequentially passes through each surface S1 to S12 and finally forms an image on the imaging plane S13.

[0140] In this embodiment, the total effective focal length f of the optical imaging lens is 16.81 mm, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging plane S13 is 15.21 mm, and half of the diagonal length of the effective pixel area on the imaging plane S13 is ImgH = 4.35 mm.

[0141] Table 9 shows the basic parameter table of the optical imaging lens according to Embodiment 5, where the units of the radius of curvature, thickness, and focal length are all millimeters (mm).

[0142]

[0143] Table 9

[0144] In Embodiment 5, the object side surface and the image side surface of any one of the first lens E1 to the fifth lens E5 are aspherical surfaces. Table 10 below gives the high-order term coefficients A4, A6, A8, A 10 , A 12 , A14 , A 16 , A 18 and A 20 .

[0145] Plane number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 5.2753E-03 -4.0545E-04 5.4858E-04 -6.7237E-04 5.6034E-04 -3.3741E-04 1.5070E-04 -5.0299E-05 1.2464E-05 S2 -5.4900E-03 1.0187E-02 2.1090E-03 -1.2300E-02 1.1031E-02 -5.3373E-03 1.6467E-03 -3.4412E-04 4.9842E-05 S3 -2.7770E-02 1.6179E-02 6.6100E-03 -2.1042E-02 1.8154E-02 -8.9391E-03 2.8762E-03 -6.3676E-04 9.8950E-05 S4 -2.4921E-02 9.5525E-03 6.8707E-03 -1.5134E-02 1.2502E-02 -6.0761E-03 1.8450E-03 -3.2626E-04 1.8428E-05 S5 9.9799E-03 -3.6445E-04 6.7948E-03 -5.0044E-03 -5.5391E-03 1.1525E-02 -9.2981E-03 4.4968E-03 -1.4344E-03 S6 -3.5598E-02 6.3183E-02 -2.6755E-02 -6.1125E-03 -1.6359E-02 5.2578E-02 -5.5175E-02 3.2823E-02 -1.2556E-02 S7 -7.8109E-02 6.9016E-02 1.1850E-03 -6.4574E-02 4.3986E-02 1.9470E-02 -4.8731E-02 3.6465E-02 -1.5809E-02 S8 -3.6251E-02 1.2283E-02 4.8100E-04 3.0714E-02 -1.0318E-01 1.6335E-01 -1.5972E-01 1.0535E-01 -4.8505E-02 S9 -1.9511E-02 -1.8472E-04 7.0393E-03 -1.7204E-02 2.8734E-02 -3.2165E-02 2.4774E-02 -1.3378E-02 5.1004E-03 S10 -1.4339E-02 3.5263E-03 -5.6368E-03 6.5929E-03 -3.9138E-03 4.6145E-04 1.0674E-03 -9.0752E-04 3.8642E-04

[0146] Table 10

[0147] 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 with different wavelengths after passing through the lens. Figure 10B shows the astigmatism curve of the optical imaging lens of Example 5, which represents the meridional image plane curvature and the sagittal image plane curvature. 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 seen that the optical imaging lens given in Example 5 can achieve good imaging quality.

[0148] Example 6

[0149] The following refers to Figures 11 to 12D to describe the optical imaging lens according to Embodiment 6 of the present application. Figure 11 shows a schematic structural diagram of the optical imaging lens according to Embodiment 6 of the present application.

[0150] As Figure 11 shown, the optical imaging lens sequentially includes, from the object side to the image side along the optical axis: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.

[0151] The first lens E1 has a positive optical power, its object side surface S1 is a convex surface, and its image side surface S2 is a convex surface. The second lens E2 has a negative optical power, its object side surface S3 is a concave surface, and its image side surface S4 is a concave surface. The third lens E3 has a positive optical power, its object side surface S5 is a convex surface, and its image side surface S6 is a concave surface. The fourth lens E4 has a negative optical power, its object side surface S7 is a convex surface, and its image side surface S8 is a concave surface. The fifth lens E5 has a positive optical power, its object side surface S9 is a convex surface, and its image side surface S10 is a concave surface. 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.

[0152] In this embodiment, the total effective focal length f of the optical imaging lens is 18.56 mm, the distance TTL on the optical axis from the object side S1 of the first lens E1 to the imaging surface S13 is 17.74 mm, and half of the diagonal length of the effective pixel area on the imaging surface S13 is ImgH = 4.36 mm.

[0153] Table 11 shows the basic parameter table of the optical imaging lens of Embodiment 6, where the units of the radius of curvature, thickness, and focal length are all millimeters (mm).

[0154]

[0155] Table 11

[0156] In Embodiment 6, the object side and the image side of any one of the first lens E1 to the fifth lens E5 are aspherical surfaces. Table 12 below gives the high-order term coefficients A4, A6, A8, A 10 , A 12 , A 14 , A 16 , A 18 , and A 20 that can be used for each aspherical mirror surface S1 - S10 in Embodiment 6.

[0157] Plane number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 6.9110E-04 7.6124E-06 2.8876E-06 -5.1260E-06 1.6496E-06 -2.8878E-07 2.6193E-08 -1.1347E-09 1.8280E-11 S2 2.9203E-03 -2.0154E-04 -9.1318E-05 7.4141E-05 -2.7765E-05 5.3040E-06 -5.4109E-07 2.8244E-08 -5.9362E-10 S3 -5.0394E-03 1.7772E-03 -1.3894E-04 -1.8143E-05 -3.1150E-06 2.3015E-06 -3.5155E-07 2.2352E-08 -5.2368E-10 S4 -9.1556E-03 9.4950E-04 1.1025E-03 -6.4408E-04 2.2215E-04 -5.7007E-05 9.9326E-06 -1.0015E-06 4.3149E-08 S5 7.4071E-04 -3.4130E-03 1.5151E-03 -4.2298E-04 1.4506E-04 -6.0992E-05 1.5931E-05 -2.1105E-06 1.1043E-07 S6 7.4108E-03 -2.1254E-02 1.5771E-02 -5.5133E-03 7.0482E-04 1.1047E-04 -5.0394E-05 6.4895E-06 -2.9757E-07 S7 -8.1417E-04 -1.7069E-02 1.5708E-02 -5.8199E-03 7.1505E-04 1.6050E-04 -6.7861E-05 8.9115E-06 -4.2246E-07 S8 -9.3490E-03 4.2649E-03 -6.3320E-04 -1.4359E-05 4.6114E-05 -1.3987E-05 2.4892E-06 -3.0609E-07 1.9472E-08 S9 -6.8737E-03 6.7877E-04 -8.0045E-05 5.2168E-05 -1.9357E-05 4.0276E-06 -4.3924E-07 1.9707E-08 -3.4246E-11 S10 7.3230E-03 -5.7929E-03 2.7688E-03 -1.0268E-03 2.8326E-04 -5.4415E-05 6.7887E-06 -4.9048E-07 1.5498E-08

[0158] Table 12

[0159] Figure 12A shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 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 Embodiment 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 Embodiment 6, which represents the distortion magnitude values corresponding to different image heights. Figure 12D shows the lateral chromatic aberration curve of the optical imaging lens of Embodiment 6, which represents the deviation of different image heights on the imaging surface after light rays pass through the lens. According to Figures 12A to 12D It can be seen that the optical imaging lens given in Embodiment 6 can achieve good imaging quality.

[0160] Example 7

[0161] The following refers to Figures 13 to 14D to describe the optical imaging lens according to Embodiment 7 of the present application. Figure 13 shows a schematic structural diagram of the optical imaging lens according to Embodiment 7 of the present application.

[0162] As Figure 13As shown in the figure, the optical imaging lens sequentially includes, from the object side to the image side along the optical axis: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.

[0163] The first lens E1 has a positive focal power, its object side surface S1 is convex, and its image side surface S2 is convex. The second lens E2 has a negative focal power, its object side surface S3 is convex, and its image side surface S4 is concave. 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 negative focal power, its object side surface S7 is convex, and its image side surface S8 is concave. The fifth lens E5 has a positive focal power, its object side surface S9 is concave, and its image side surface S10 is convex. 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.

[0164] In this embodiment, the total effective focal length f of the optical imaging lens is 16.86 mm, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S13 is 15.52 mm, and half of the diagonal length of the effective pixel region on the imaging surface S13 is ImgH = 4.36 mm.

[0165] Table 13 shows the basic parameter table of the optical imaging lens of Embodiment 7, where the units of the radius of curvature, thickness, and focal length are all millimeters (mm).

[0166]

[0167]

[0168] Table 13

[0169] In Embodiment 7, the object side surface and the image side surface of any one of the first lens E1 to the fifth lens E5 are aspherical surfaces. Table 14 below gives the high-order term coefficients A4, A6, A8, A 10 , A 12 , A 14 , A 16 , A 18 and A 20 that can be used for the aspherical surfaces S1 - S10 in Embodiment 7.

[0170] Plane number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 3.3090E-03 4.6118E-05 -1.6486E-05 9.3443E-06 -4.6250E-06 1.2922E-06 -1.9877E-07 1.3942E-08 -3.5143E-10 S2 1.6692E-03 1.3507E-03 -1.1495E-03 5.6532E-04 -1.6452E-04 2.7650E-05 -2.6310E-06 1.3115E-07 -2.6540E-09 S3 -2.4699E-02 5.7528E-03 -1.0657E-03 4.1707E-04 -1.5631E-04 3.3048E-05 -3.7185E-06 2.0988E-07 -4.6844E-09 S4 -2.3409E-02 4.2504E-03 8.9034E-04 -7.3990E-04 2.6834E-04 -7.2961E-05 1.4269E-05 -1.6003E-06 7.3184E-08 S5 1.0702E-02 -4.9118E-03 2.7356E-03 -1.9038E-03 9.2644E-04 -3.0772E-04 6.2016E-05 -6.7449E-06 3.0436E-07 S6 -9.0421E-03 1.8551E-02 -1.6865E-02 9.1819E-03 -3.4743E-03 8.7141E-04 -1.3387E-04 1.1195E-05 -3.8322E-07 S7 -4.0300E-02 2.9805E-02 -2.1547E-02 1.1572E-02 -4.3460E-03 1.0846E-03 -1.6487E-04 1.3356E-05 -4.2601E-07 S8 -2.0635E-02 9.7976E-03 -3.1088E-03 1.0057E-03 -7.5709E-05 -1.0153E-04 4.7415E-05 -8.6751E-06 5.8200E-07 S9 -9.8087E-03 1.8594E-04 5.5977E-04 -3.9942E-04 1.8501E-04 -5.3618E-05 9.5158E-06 -9.3896E-07 3.9304E-08 S10 -9.1871E-03 1.5843E-04 2.6404E-04 -1.5928E-04 5.7888E-05 -1.3148E-05 1.8252E-06 -1.3972E-07 4.4979E-09

[0171] Table 14

[0172] Figure 14A shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 7, which represents the deviation of the convergence points of light rays of different wavelengths after passing through the lens. Figure 14BThe astigmatism curve of the optical imaging lens of Embodiment 7 is shown, which represents the curvature of the meridional image plane and the curvature of the sagittal image plane. Figure 14C The distortion curve of the optical imaging lens of Embodiment 7 is shown, which represents the distortion magnitude values corresponding to different image heights. Figure 14D The longitudinal chromatic aberration curve of the optical imaging lens of Embodiment 7 is shown, which represents the deviation of different image heights on the imaging plane after the light passes through the lens. According to Figures 14A to 14D it can be seen that the optical imaging lens given in Embodiment 7 can achieve good imaging quality.

[0173] Example 8

[0174] The following refers to Figures 15 to 16D to describe the optical imaging lens according to Embodiment 8 of the present application. Figure 15 The structural schematic diagram of the optical imaging lens according to Embodiment 7 of the present application is shown.

[0175] As Figure 15 shown, the optical imaging lens sequentially includes, from the object side to the image side along the optical axis: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.

[0176] The first lens E1 has a positive optical power, its object side surface S1 is a convex surface, and its image side surface S2 is a convex surface. The second lens E2 has a negative optical power, its object side surface S3 is a concave surface, and its image side surface S4 is a concave surface. The third lens E3 has a positive optical power, its object side surface S5 is a convex surface, and its image side surface S6 is a convex surface. The fourth lens E4 has a negative optical power, its object side surface S7 is a convex surface, and its image side surface S8 is a concave surface. The fifth lens E5 has a negative optical power, its object side surface S9 is a convex surface, and its image side surface S10 is a concave surface. The filter E6 has an object side surface S11 and an image side surface S12. The light from the object sequentially passes through the surfaces S1 to S12 and finally forms an image on the imaging surface S13.

[0177] In this embodiment, the total effective focal length f of the optical imaging lens is 18.56 mm, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S13 is 17.81 mm, and half of the diagonal length of the effective pixel area on the imaging surface S13 is ImgH = 4.36 mm.

[0178] Table 15 shows the basic parameter table of the optical imaging lens of Embodiment 8, where the units of the radius of curvature, thickness, and focal length are all millimeters (mm).

[0179]

[0180] Table 15

[0181] In Embodiment 8, the object side and the image side of any one of the first lens E1 to the fifth lens E5 are aspherical surfaces. Table 16 below gives the higher-order coefficients A4, A6, A8, A 10 , A 12 , A 14 , A 16 , A 18 , and A 20 for each of the aspherical mirror surfaces S1 - S10 in Embodiment 8.

[0182] Plane number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 8.2407E-04 -5.4606E-05 3.4598E-05 -1.5776E-05 4.0260E-06 -6.5288E-07 5.9699E-08 -2.7417E-09 4.8969E-11 S2 4.2847E-03 -1.9428E-03 7.8257E-04 -1.4717E-04 9.1949E-07 3.7537E-06 -5.6565E-07 3.4308E-08 -7.7240E-10 S3 -2.5418E-03 -1.5832E-03 1.6719E-03 -5.2509E-04 7.2650E-05 -2.9945E-06 -3.1794E-07 3.7754E-08 -1.1110E-09 S4 -4.4935E-03 -8.7902E-04 1.3197E-03 -3.8064E-04 5.2712E-05 -1.0857E-05 3.1608E-06 -4.6850E-07 2.5118E-08 S5 8.7510E-04 -1.6170E-03 -2.3018E-04 8.0709E-04 -3.9109E-04 7.9194E-05 -6.2271E-06 -1.2930E-07 3.3278E-08 S6 3.8757E-03 -2.2096E-03 -1.9512E-03 3.3153E-03 -1.9091E-03 5.7127E-04 -9.5908E-05 8.6022E-06 -3.2151E-07 S7 -4.8420E-03 9.6295E-04 -2.7460E-03 3.7841E-03 -2.3141E-03 7.6722E-04 -1.4444E-04 1.4630E-05 -6.2297E-07 S8 -8.8324E-03 3.3632E-03 -1.5827E-03 1.3838E-03 -8.3024E-04 2.9864E-04 -6.2205E-05 6.9740E-06 -3.2579E-07 S9 -5.4621E-03 -7.0973E-04 1.8224E-04 -1.3149E-05 2.6940E-06 -3.3379E-06 1.0688E-06 -1.2739E-07 4.5632E-09 S10 7.2945E-03 -8.1341E-03 4.4926E-03 -1.9597E-03 6.2414E-04 -1.3555E-04 1.8734E-05 -1.4724E-06 4.9794E-08

[0183] Table 16

[0184] Figure 16A shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 8, which represents the deviation of the focusing points of light rays of different wavelengths after passing through the lens. Figure 16B shows the astigmatism curve of the optical imaging lens of Embodiment 8, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 16C shows the distortion curve of the optical imaging lens of Embodiment 8, which represents the distortion magnitude values corresponding to different image heights. Figure 16D shows the longitudinal chromatic aberration curve of the optical imaging lens of Embodiment 8, which represents the deviation of different image heights of light rays on the imaging plane after passing through the lens. According to Figures 16A to 16D , it can be known that the optical imaging lens given in Embodiment 8 can achieve good imaging quality.

[0185] In summary, Embodiments 1 to 8 respectively satisfy the relationships shown in Table 17.

[0186] Conditional / Example 1 2 3 4 5 6 7 8 ImgH / (TTL / f) (mm) 4.81 4.58 4.71 4.83 4.81 4.56 4.74 4.54 TTL / f 0.90 0.95 0.93 0.90 0.90 0.96 0.92 0.96 (f3 - f1) / (f2 - f4) 1.01 0.56 0.95 0.68 1.02 0.65 0.72 0.71 (R7 - R8) / (R7 + R8) 0.55 0.64 0.76 0.58 0.60 0.63 0.70 0.58 (R2 - R1) / (R2 + R1) 1.38 2.55 1.66 1.24 1.37 2.93 1.65 3.23 f (mm) 16.82 17.35 16.78 16.85 16.81 18.56 16.86 18.56 FOV (°) 28.7 28.3 29.1 28.6 28.7 26.5 28.9 26.5 f × tan(FOV / 2) (mm) 4.30 4.37 4.35 4.30 4.30 4.37 4.35 4.37 T45 / T23 1.26 3.00 3.08 1.02 1.11 2.86 3.14 1.93 DT11 / DT51 1.21 1.13 1.15 1.22 1.22 1.22 1.16 1.29 DT12 / DT42 1.26 1.35 1.37 1.30 1.23 1.40 1.39 1.33 TTL / BFL 1.94 2.17 2.31 2.09 1.94 2.30 2.31 2.31 f12 / f34 0.16 1.54 0.53 0.86 0.29 1.24 0.65 0.80

[0187] Table 17

[0188] The above description is only the preferred embodiments of the present application and the description of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the technical solutions formed by mutually replacing the above features with the technical features (but not limited to) having similar functions disclosed in the present 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 positive optical power, whose object side is convex and image side is convex; A second lens with negative optical power, whose image side is concave; A third lens with positive optical power; A fourth lens with negative optical power, whose object side is convex and image side is concave; and A fifth lens with optical power; Among them, the number of lenses with optical power in the optical imaging lens is five; Half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens, the distance TTL from the object side of the first lens to the imaging surface on the optical axis, and the total effective focal length f of the optical imaging lens satisfy: 4.54mm ≤ ImgH / (TTL / f) ≤ 4.83mm; The effective focal length f1 of the first lens, the effective focal length f2 of the second lens, the effective focal length f3 of the third lens, and the effective focal length f4 of the fourth lens satisfy: 0.56 ≤ (f3 - f1) / (f2 - f4) ≤ 1.02; The total effective focal length f of the optical imaging lens satisfies: 16.78mm ≤ f ≤ 18.56mm.

2. The optical imaging lens according to claim 1, wherein The distance TTL from the object side of the first lens to the imaging surface on the optical axis and the total effective focal length f of the optical imaging lens satisfy: 0.90 ≤ TTL / f < 1.

0.

3. The optical imaging lens according to claim 1, wherein, The radius of curvature R7 of the object side of the fourth lens and the radius of curvature R8 of the image side of the fourth lens satisfy: 0.55 ≤ (R7 - R8) / (R7 + R8) ≤ 0.

76.

4. The optical imaging lens according to claim 1, characterized in that, 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: 1.2 < (R2 - R1) / (R2 + R1) ≤ 3.

23.

5. The optical imaging lens according to claim 1, characterized in that, The maximum field of view FOV of the optical imaging lens satisfies: 26.5° ≤ FOV ≤ 29.1°.

6. The optical imaging lens according to claim 1, wherein The total effective focal length f of the optical imaging lens and the maximum field of view FOV of the optical imaging lens satisfy: 4.30mm ≤ f × tan(FOV / 2) ≤ 4.37mm.

7. The optical imaging lens according to claim 1, characterized in that, The air gap T23 between the second lens and the third lens on the optical axis and the air gap T45 between the fourth lens and the fifth lens on the optical axis satisfy: 1.0 < T45 / T23 ≤ 3.

14.

8. The optical imaging lens according to claim 1, characterized in that The maximum effective semi-aperture DT11 of the object side of the first lens and the maximum effective semi-aperture DT51 of the object side of the fifth lens satisfy: 1.1 < DT11 / DT51 ≤ 1.

29.

9. The optical imaging lens according to claim 1, wherein The maximum effective semi-aperture DT12 of the image side of the first lens and the maximum effective semi-aperture DT42 of the image side of the fourth lens satisfy: 1.2 < DT12 / DT42 ≤ 1.

40.

10. The optical imaging lens according to any one of claims 1-9, characterized in that, The distance TTL from the object side of the first lens to the imaging surface on the optical axis and the distance BFL from the image side of the fifth lens to the imaging surface on the optical axis satisfy: 1.9 < TTL / BFL ≤ 2.

31.

11. The optical imaging lens according to any one of claims 1-9, characterized in that, The combined focal length f12 of the first lens and the second lens and the combined focal length f34 of the third lens and the fourth lens satisfy: 0.16 ≤ f12 / f34 ≤ 1.54。

Images