Optical imaging lens

Abstract

The present application discloses an optical imaging lens, which sequentially includes, from the object side to the image side along the optical axis: a first lens with a negative optical power; a second lens with an optical power; a third lens with a negative optical power; a fourth lens with an optical power; a fifth lens with a negative optical power, whose object side is convex; and a sixth lens with an optical power, whose object side is convex. The maximum field of view FOV of the optical imaging lens satisfies: 92° < FOV < 116°. Half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens, the total effective focal length f of the optical imaging lens, and the entrance pupil diameter EPD of the optical imaging lens satisfy: ImgH × EPD / f < 1 mm.

Description

Technical Field

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

[0002] In recent years, with the rapid development of smart phones, smart watches, and consumer electronic products with VR technology, etc., portable and wearable electronic products have rapidly become popular. Products such as smart phones, smart watches, and consumer electronic products with VR technology have gradually entered the daily lives of users. At the same time, in order to improve the competitiveness of products, many electronic product suppliers have invested a lot of time and energy in product innovation. Among them, how to adjust the relationship between the imaging range, size, and imaging picture clarity of the optical imaging lens has gradually become one of the focuses of attention of many electronic product suppliers. Summary of the Invention

[0003] This application provides such an optical imaging lens, which sequentially includes, from the object side to the image side along the optical axis: a first lens with negative optical power; a second lens with optical power; a third lens with negative optical power; a fourth lens with optical power; a fifth lens with negative optical power, whose object side is convex; and a sixth lens with optical power, whose object side is convex; the maximum field of view FOV of the optical imaging lens can satisfy: 92° < FOV < 116°; and half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens, the total effective focal length f of the optical imaging lens, and the entrance pupil diameter EPD of the optical imaging lens can satisfy: ImgH × EPD / f < 1 mm.

[0004] In one embodiment, at least one of the object side of the first lens to the image side of the sixth lens is an aspherical mirror surface.

[0005] In one embodiment, the optical imaging lens further includes a diaphragm, 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 and the distance SL from the diaphragm to the imaging surface of the optical imaging lens on the optical axis can satisfy: 0.5 < SL / TTL < 1.0.

[0006] In one embodiment, the effective focal length f4 of the fourth lens and the total effective focal length f of the optical imaging lens can satisfy: 0.5 < f4 / f < 1.5.

[0007] In one embodiment, the combined focal length f23 of the second lens and the third lens and the combined focal length f456 of the fourth, fifth, and sixth lenses can satisfy: 0.5 < f23 / f456 < 1.5.

[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 f5 of the fifth lens may satisfy: 1.0 < f1 / f3 - f2 / f5 < 2.0.

[0009] In one embodiment, the edge thickness ET6 of the sixth lens and the central thickness CT6 of the sixth lens on the optical axis may satisfy: 0.5 < CT6 / ET6 < 1.2.

[0010] In one embodiment, the maximum effective radius DT12 of the image side of the first lens and the maximum effective radius DT61 of the object side of the sixth lens may satisfy: 0.4 < DT12 / DT61 < 1.0.

[0011] In one embodiment, the central thickness CT4 of the fourth lens on the optical axis and the maximum effective radius DT41 of the object side of the fourth lens may satisfy: 0.5 < CT4 / DT41 < 1.0.

[0012] In one embodiment, the radius of curvature R2 of the image side of the first lens and the radius of curvature R6 of the image side of the third lens may satisfy: 0 < R2 / R6 < 1.0.

[0013] In one embodiment, the radius of curvature R3 of the object side of the second lens and the radius of curvature R4 of the image side of the second lens may satisfy: 0 < R4 / (R4 - R3) < 1.0.

[0014] In one embodiment, the radius of curvature R9 of the object side of the fifth lens and the radius of curvature R10 of the image side of the fifth lens may satisfy: 0.3 < (R9 - R10) / (R9 + R10) < 1.3.

[0015] In one embodiment, the radius of curvature R8 of the image side of the fourth lens and the radius of curvature R11 of the object side of the sixth lens may satisfy: 0 < R8 / (R8 - R11) < 1.0.

[0016] In one embodiment, the central thickness CT4 of the fourth lens on the optical axis and the sum ΣAT of the spacing distances of any two adjacent lenses among the first lens to the sixth lens on the optical axis may satisfy: 0.3 < CT4 / ΣAT < 1.0.

[0017] In one embodiment, the second lens has a positive optical power, its object side is convex, and its image side is convex.

[0018] In one embodiment, the fourth lens has a positive optical power, and its image side is convex.

[0019] In one embodiment, the image side of the fifth lens is concave.

[0020] In one embodiment, the image side surface of the sixth lens is concave.

[0021] On the other hand, the present application provides an optical imaging lens, which sequentially includes, along the optical axis from the object side to the image side: a first lens with a negative focal power; a second lens with a focal power; a third lens with a negative focal power; a fourth lens with a focal power; a fifth lens with a negative focal power, whose object side surface is convex; and a sixth lens with a focal power, whose object side surface is convex. The maximum field of view FOV of the optical imaging lens can satisfy: 92° < FOV < 116°; and the central thickness CT4 of the fourth lens on the optical axis and the sum ΣAT of the spacing distances on the optical axis between any two adjacent lenses among the first lens to the sixth lens can satisfy: 0.3 < CT4 / ΣAT < 1.0.

[0022] In one embodiment, the optical imaging lens further includes a diaphragm. The distance TTL on the optical axis from the object side surface of the first lens to the imaging surface of the optical imaging lens and the distance SL on the optical axis from the diaphragm to the imaging surface of the optical imaging lens can satisfy: 0.5 < SL / TTL < 1.0.

[0023] In one embodiment, the effective focal length f4 of the fourth lens and the total effective focal length f of the optical imaging lens can satisfy: 0.5 < f4 / f < 1.5.

[0024] In one embodiment, the combined focal length f23 of the second lens and the third lens and the combined focal length f456 of the fourth lens, the fifth lens, and the sixth lens can satisfy: 0.5 < f23 / f456 < 1.5.

[0025] 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 f5 of the fifth lens can satisfy: 1.0 < f1 / f3 - f2 / f5 < 2.0.

[0026] In one embodiment, the edge thickness ET6 of the sixth lens and the central thickness CT6 of the sixth lens on the optical axis can satisfy: 0.5 < CT6 / ET6 < 1.2.

[0027] In one embodiment, the maximum effective radius DT12 of the image side surface of the first lens and the maximum effective radius DT61 of the object side surface of the sixth lens can satisfy: 0.4 < DT12 / DT61 < 1.0.

[0028] In one embodiment, the central thickness CT4 of the fourth lens on the optical axis and the maximum effective radius DT41 of the object side surface of the fourth lens can satisfy: 0.5 < CT4 / DT41 < 1.0.

[0029] In one embodiment, the radius of curvature R2 of the image side surface of the first lens and the radius of curvature R6 of the image side surface of the third lens may satisfy: 0 < R2 / R6 < 1.0.

[0030] In one embodiment, the radius of curvature R3 of the object side surface of the second lens and the radius of curvature R4 of the image side surface of the second lens may satisfy: 0 < R4 / (R4 - R3) < 1.0.

[0031] In one embodiment, the radius of curvature R9 of the object side surface of the fifth lens and the radius of curvature R10 of the image side surface of the fifth lens may satisfy: 0.3 < (R9 - R10) / (R9 + R10) < 1.3.

[0032] In one embodiment, the radius of curvature R8 of the image side surface of the fourth lens and the radius of curvature R11 of the object side surface of the sixth lens may satisfy: 0 < R8 / (R8 - R11) < 1.0.

[0033] In one embodiment, half of the diagonal length ImgH of the effective pixel region on the imaging surface of the optical imaging lens, the total effective focal length f of the optical imaging lens, and the entrance pupil diameter EPD of the optical imaging lens may satisfy: ImgH × EPD / f < 1 mm.

[0034] In one embodiment, the second lens has a positive optical power, its object side surface is convex, and its image side surface is convex.

[0035] In one embodiment, the fourth lens has a positive optical power, and its image side surface is convex.

[0036] In one embodiment, the image side surface of the fifth lens is concave.

[0037] In one embodiment, the image side surface of the sixth lens is concave.

[0038] This application uses multiple (for example, six) lenses. By reasonably distributing the optical power, surface type, central thickness of each lens, and the on-axis spacing between each lens, etc., the above optical imaging lens has at least one beneficial effect such as ultra-wide angle, miniaturization, and high imaging quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] By reading the detailed description of the non-limiting embodiments with reference to the following drawings, other features, objectives, and advantages of this application will become more apparent:

[0040] Figure 1 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 1 of this application;

[0041] Figures 2A to 2DRespectively shown are the axial chromatic aberration curve, astigmatism curve, distortion curve, and longitudinal chromatic aberration curve of the optical imaging lens of Embodiment 1;

[0042] Figure 3 Shown is a schematic structural diagram of the optical imaging lens according to Embodiment 2 of the present application;

[0043] Figures 4A to 4D Respectively shown are the axial chromatic aberration curve, astigmatism curve, distortion curve, and longitudinal chromatic aberration curve of the optical imaging lens of Embodiment 2;

[0044] Figure 5 Shown is a schematic structural diagram of the optical imaging lens according to Embodiment 3 of the present application;

[0045] Figures 6A to 6D Respectively shown are the axial chromatic aberration curve, astigmatism curve, distortion curve, and longitudinal chromatic aberration curve of the optical imaging lens of Embodiment 3;

[0046] Figure 7 Shown is a schematic structural diagram of the optical imaging lens according to Embodiment 4 of the present application;

[0047] Figures 8A to 8D Respectively shown are the axial chromatic aberration curve, astigmatism curve, distortion curve, and longitudinal chromatic aberration curve of the optical imaging lens of Embodiment 4;

[0048] Figure 9 Shown is a schematic structural diagram of the optical imaging lens according to Embodiment 5 of the present application;

[0049] Figures 10A to 10D Respectively shown are the axial chromatic aberration curve, astigmatism curve, distortion curve, and longitudinal chromatic aberration curve of the optical imaging lens of Embodiment 5;

[0050] Figure 11 Shown is a schematic structural diagram of the optical imaging lens according to Embodiment 6 of the present application; and

[0051] Figures 12A to 12D Respectively shown are the axial chromatic aberration curve, astigmatism curve, distortion curve, and longitudinal chromatic aberration curve of the optical imaging lens of Embodiment 6. Detailed Embodiments

[0052] To better understand the present application, more detailed descriptions of various aspects of the present application will be made with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of exemplary embodiments of the present application and do not limit the scope of the present application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0053] 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, 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.

[0054] In the drawings, for ease 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.

[0055] In this document, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object being photographed is called the object side surface of the lens, and the surface of each lens closest to the imaging surface is called the image side surface of the lens.

[0056] 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 a list of listed features, it modifies the entire list of listed features, rather than an individual element in the list. In addition, when describing the embodiments of the present application, the use of "may" means "one or more embodiments of the present application". And the term "exemplary" is intended to refer to an example or illustration.

[0057] Unless otherwise defined, all terms used herein (including technical and scientific terms) 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.

[0058] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0059] The features, principles, and other aspects of the present application will be described in detail below.

[0060] The optical imaging lens according to an exemplary embodiment of the present application may include six lenses with optical power, namely a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. These six lenses are arranged in sequence along the optical axis from the object side to the image side. There may be a spacing distance between any two adjacent lenses among the first lens to the sixth lens.

[0061] In the exemplary embodiment, the first lens may have a negative optical power; the second lens may have a positive optical power or a negative optical power; the third lens may have a negative optical power; the fourth lens may have a positive optical power or a negative optical power; the fifth lens may have a negative optical power, and its object side may be convex; and the sixth lens may have a positive optical power or a negative optical power, and its object side may be convex. By reasonably distributing the optical power and surface characteristics of each lens, it is beneficial to balance and correct various aberrations of the optical imaging lens.

[0062] In the exemplary embodiment, the second lens may have a positive optical power, its object side may be convex, and its image side may be convex. The second lens with a positive optical power and a convex-convex surface type is beneficial to reasonably distribute the optical power, beneficial to balance and correct various aberrations of the optical imaging lens, and meet the requirements of high image quality.

[0063] In the exemplary embodiment, the fourth lens may have a positive optical power, and its image side may be convex. The fourth lens having a positive optical power and a convex image side is beneficial to reasonably distribute the optical power, beneficial to balance and correct various aberrations of the optical imaging lens, and meet the requirements of high image quality.

[0064] In the exemplary embodiment, the image side of the fifth lens may be concave. The concave image side of the fifth lens is beneficial to reasonably distribute the optical power, beneficial to balance and correct various aberrations of the optical imaging lens, and meet the requirements of high image quality.

[0065] In the exemplary embodiment, the image side of the sixth lens may be concave. The concave image side of the sixth lens is beneficial to reasonably distribute the optical power, beneficial to balance and correct various aberrations of the optical imaging lens, and meet the requirements of high image quality.

[0066] In the exemplary embodiment, the optical imaging lens according to the present application may satisfy: 92° < FOV < 116°, where FOV is the maximum field of view angle of the optical imaging lens. More specifically, FOV may further satisfy: 99° < FOV < 113°. Satisfying 92° < FOV < 116° is beneficial to endow the optical imaging lens with wide-angle characteristics, so that the imaging picture within a large field of view is clear and the appeal of the picture is enhanced.

[0067] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: ImgH × EPD / f < 1 mm, where ImgH is half of the diagonal length of the effective pixel region on the imaging surface of the optical imaging lens, f is the total effective focal length of the optical imaging lens, and EPD is the entrance pupil diameter of the optical imaging lens. Satisfying ImgH × EPD / f < 1 mm is beneficial for the optical imaging lens to have the characteristics of miniaturization and high image quality while having the characteristics of miniaturization.

[0068] In an exemplary embodiment, the optical imaging lens further includes a diaphragm, and the optical imaging lens according to the present application may satisfy: 0.5 < SL / TTL < 1.0, where TTL is the distance from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis, and SL is the distance from the diaphragm to the imaging surface of the optical imaging lens on the optical axis. More specifically, SL and TTL may further satisfy: 0.6 < SL / TTL < 0.9. Satisfying 0.5 < SL / TTL < 1.0 is beneficial for correcting the astigmatism of the optical imaging lens and for the optical imaging lens to have a smaller total length.

[0069] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.5 < f4 / f < 1.5, where f4 is the effective focal length of the fourth lens and f is the total effective focal length of the optical imaging lens. More specifically, f4 and f may further satisfy: 0.6 < f4 / f < 1.2. Satisfying 0.5 < f4 / f < 1.5 is beneficial for correcting the lateral chromatic aberration of the optical imaging lens.

[0070] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.5 < f23 / f456 < 1.5, where f23 is the combined focal length of the second lens and the third lens, and f456 is the combined focal length of the fourth lens, the fifth lens, and the sixth lens. More specifically, f23 and f456 may further satisfy: 0.6 < f23 / f456 < 1.2. Satisfying 0.5 < f23 / f456 < 1.5 is beneficial for correcting the lateral chromatic aberration and axial chromatic aberration of the optical imaging lens to improve the imaging performance of the optical imaging lens.

[0071] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 1.0 < f1 / f3 - f2 / f5 < 2.0, where f1 is the effective focal length of the first lens, f2 is the effective focal length of the second lens, f3 is the effective focal length of the third lens, and f5 is the effective focal length of the fifth lens. More specifically, f1, f3, f2, and f5 may further satisfy: 1.1 < f1 / f3 - f2 / f5 < 1.4. Satisfying 1.0 < f1 / f3 - f2 / f5 < 2.0 is beneficial for balancing the optical power of each lens in the optical imaging lens to better correct the spherical aberration and axial chromatic aberration of the optical imaging lens.

[0072] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.5 < CT6 / ET6 < 1.2, where ET6 is the edge thickness of the sixth lens and CT6 is the central thickness of the sixth lens on the optical axis. More specifically, CT6 and ET6 may further satisfy: 0.6 < CT6 / ET6 < 1.1. Satisfying 0.5 < CT6 / ET6 < 1.2 can, while ensuring the processing and production characteristics of the optical imaging lens, be more conducive to reducing the off-axis field curvature of the optical imaging lens.

[0073] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.4 < DT12 / DT61 < 1.0, where DT12 is the maximum effective radius of the image side of the first lens and DT61 is the maximum effective radius of the object side of the sixth lens. More specifically, DT12 and DT61 may further satisfy: 0.4 < DT12 / DT61 < 0.7. Satisfying 0.4 < DT12 / DT61 < 1.0 can achieve miniaturization characteristics by controlling the size of the optical imaging lens and is also conducive to correcting ghost images.

[0074] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.5 < CT4 / DT41 < 1.0, where CT4 is the central thickness of the fourth lens on the optical axis and DT41 is the maximum effective radius of the object side of the fourth lens. More specifically, CT4 and DT41 may further satisfy: 0.7 < CT4 / DT41 < 1.0. Satisfying 0.5 < CT4 / DT41 < 1.0 is conducive to meeting the processing technological requirements of the fourth lens and is also conducive to correcting the monochromatic aberration of the optical imaging lens.

[0075] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0 < R2 / R6 < 1.0, where R2 is the radius of curvature of the image side of the first lens and R6 is the radius of curvature of the image side of the third lens. More specifically, R2 and R6 may further satisfy: 0.2 < R2 / R6 < 0.9. Satisfying 0 < R2 / R6 < 1.0 is conducive to reducing the axial chromatic aberration of the optical imaging lens.

[0076] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0 < R4 / (R4 - R3) < 1.0, where R3 is the radius of curvature of the object side of the second lens and R4 is the radius of curvature of the image side of the second lens. More specifically, R4 and R3 may further satisfy: 0.2 < R4 / (R4 - R3) < 0.8. Satisfying 0 < R4 / (R4 - R3) < 1.0 can ensure the processability of the second lens under the condition that the second lens has a positive optical power; at the same time, it is also conducive to distributing the optical power of the optical imaging lens and reducing the aberration of the optical imaging lens.

[0077] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.3 < (R9 - R10) / (R9 + R10) < 1.3, where R9 is the radius of curvature of the object side surface of the fifth lens, and R10 is the radius of curvature of the image side surface of the fifth lens. More specifically, R9 and R10 may further satisfy: 0.5 < (R9 - R10) / (R9 + R10) < 1.0. Satisfying 0.3 < (R9 - R10) / (R9 + R10) < 1.3 is beneficial to reducing the monochromatic aberration and coma of the optical imaging lens.

[0078] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0 < R8 / (R8 - R11) < 1.0, where R8 is the radius of curvature of the image side surface of the fourth lens, and R11 is the radius of curvature of the object side surface of the sixth lens. More specifically, R8 and R11 may further satisfy: 0.3 < R8 / (R8 - R11) < 0.7. Satisfying 0 < R8 / (R8 - R11) < 1.0 is beneficial to reasonably distributing the radius of curvature of the image side surface of the fourth lens, beneficial to reducing various aberrations of the optical imaging lens, so as to reduce the influence of ghost images.

[0079] In an exemplary embodiment, the optical imaging lens according to the present application may satisfy: 0.3 < CT4 / ΣAT < 1.0, where CT4 is the central thickness of the fourth lens on the optical axis, and ΣAT is the sum of the axial spacing distances between any two adjacent lenses among the first lens to the sixth lens on the optical axis. More specifically, CT4 and ΣAT may further satisfy: 0.3 < CT4 / ΣAT < 0.9. Satisfying 0.3 < CT4 / ΣAT < 1.0 is beneficial to enabling the optical imaging lens to have the characteristic of miniaturization.

[0080] In an exemplary embodiment, the optical imaging lens according to the present application further includes a diaphragm disposed between the first lens and the second 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.

[0081] The optical imaging lens according to the above embodiment of the present application may adopt multiple lenses, such as the six lenses described above. By reasonably distributing the optical power, surface shape, central thickness of each lens, and the axial spacing between each lens, etc., the volume of the optical imaging lens can be effectively reduced and the processability of the optical imaging lens can be improved, making the optical imaging lens more conducive to production and processing and applicable to portable electronic products. The optical imaging lens configured as above may have characteristics such as ultra-wide angle, miniaturization, and good imaging quality.

[0082] In an embodiment of the present application, at least one of the lens surfaces of each lens is an aspherical lens surface, that is, at least one of the object surfaces of the first lens to the image surfaces of the sixth lens is an aspherical lens surface. The characteristic of an aspherical lens is that the curvature continuously changes from the center of the lens to the periphery of the lens. Different from a spherical lens with a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has better curvature radius characteristics and has the advantages of improving distortion aberration and improving astigmatism aberration. After using an aspherical lens, it is possible to eliminate as much as possible the aberration that appears during imaging, thereby improving the imaging quality. Optionally, at least one of the object surface and the image surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens is an aspherical lens surface. Optionally, both the object surface and the image surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens are aspherical lens surfaces.

[0083] However, those skilled in the art should understand that without departing from the technical solutions claimed in the present application, the number of lenses constituting the optical imaging lens can be changed to obtain the various results and advantages described in this specification. For example, although six lenses are described as an example in the embodiment, the optical imaging lens is not limited to including six lenses. If necessary, the optical imaging lens may further include other numbers of lenses.

[0084] The following further describes specific embodiments of the optical imaging lens applicable to the above embodiments with reference to the accompanying drawings.

[0085] Example 1

[0086] The following refers to Figures 1 to 2D Describe the optical imaging lens according to Embodiment 1 of the present application. Figure 1 The structural schematic diagram of the optical imaging lens according to Embodiment 1 of the present application is shown.

[0087] As Figure 1 shown, the optical imaging lens sequentially includes from the object side to the image side: a first lens E1, a diaphragm STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an imaging surface S15.

[0088] The first lens E1 has a negative optical power, its object side S1 is convex, and its image side S2 is concave. The second lens E2 has a positive optical power, its object side S3 is convex, and its image side S4 is convex. The third lens E3 has a negative optical power, its object side S5 is convex, and its image side S6 is concave. The fourth lens E4 has a positive optical power, its object side S7 is concave, and its image side S8 is convex. The fifth lens E5 has a negative optical power, its object side S9 is convex, and its image side S10 is concave. The sixth lens E6 has a negative optical power, its object side S11 is convex, and its image side S12 is concave. The filter E7 has an object side S13 and an image side S14. Light from the object sequentially passes through the surfaces S1 to S14 and finally forms an image on the imaging surface S15.

[0089] Table 1 shows the basic parameter table of the optical imaging lens of Example 1, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm).

[0090]

[0091] Table 1

[0092] In this example, the total effective focal length f of the optical imaging lens is 2.00 mm, the total length TTL of the optical imaging lens (i.e., the distance on the optical axis from the object side S1 of the first lens E1 to the imaging surface S15 of the optical imaging lens) is 4.10 mm, half of the diagonal length ImgH of the effective pixel region on the imaging surface S15 of the optical imaging lens is 1.91 mm, the ratio f / EPD of the total effective focal length f of the optical imaging lens to the entrance pupil diameter EPD of the optical imaging lens is 2.20, and the maximum field of view FOV of the optical imaging lens is 112.0°.

[0093] In Example 1, the object side and the image side of any one of the first lens E1 to the sixth lens E6 are aspherical surfaces, and the surface profile x of each aspherical lens can be defined by, but not limited to, the following aspherical formula:

[0094]

[0095] where x is the sagitta, the distance from the vertex of the aspherical surface at a position with a height of h along the optical axis; c is the paraxial curvature of the aspherical surface, c = 1 / R (i.e., the paraxial curvature c is the reciprocal of the radius of curvature R in Table 1 above); k is the conic coefficient; Ai is the correction coefficient of the i-th order of the aspherical surface. Table 2 below gives the higher-order term coefficients A 4 、A 6 、A 8 、A 10 、A 12 、A 14 、and A16 .

[0096] Surface number A4 A6 A8 A10 A12 A14 A16 S1 2.5102E-01 -3.6576E-01 5.8551E-01 -8.1937E-01 6.5226E-01 -2.4207E-02 -2.0844E-01 S2 6.2734E-01 -2.1779E+00 2.8435E+01 -2.1069E+02 9.4980E+02 -2.2694E+03 2.3057E+03 S3 -1.6057E-02 1.9782E+00 -3.1805E+01 2.4697E+02 -1.0728E+03 2.4463E+03 -2.2621E+03 S4 -9.7486E-01 1.3417E+00 2.9935E+00 -3.8597E+01 1.3246E+02 -2.1070E+02 1.3388E+02 S5 -3.1955E-01 -3.8870E-01 5.2692E+00 -2.6798E+01 7.0197E+01 -9.0929E+01 4.6493E+01 S6 6.9693E-03 -1.1098E+00 6.1292E+00 -1.9838E+01 3.7333E+01 -3.6933E+01 1.4732E+01 S7 1.2821E-01 -1.0720E+00 5.2664E+00 -1.5196E+01 2.5306E+01 -2.2474E+01 8.2201E+00 S8 4.9362E-01 -2.0202E+00 5.2269E+00 -9.0146E+00 1.0046E+01 -6.5179E+00 1.8625E+00 S9 2.0171E-01 -9.8879E-01 2.5230E+00 -6.1042E+00 9.1839E+00 -7.3057E+00 2.3213E+00 S10 -1.6925E-01 1.3109E+00 -3.7473E+00 5.2959E+00 -4.1772E+00 1.7461E+00 -2.9722E-01 S11 -1.0802E+00 1.6735E+00 -1.7257E+00 1.2613E+00 -9.0444E-01 5.1121E-01 -1.1992E-01 S12 -6.4991E-01 1.0586E+00 -1.2037E+00 8.8230E-01 -4.1028E-01 1.0863E-01 -1.2246E-02

[0097] Table 2

[0098] Figure 2A shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 1, which represents the deviation of the focusing 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 curvature of the meridional image plane and the curvature of the sagittal image plane. Figure 2C shows the distortion curve of the optical imaging lens of Embodiment 1, which represents the distortion magnitude values corresponding to different field angles. Figure 2D shows the lateral chromatic aberration curve of the optical imaging lens of Embodiment 1, which represents the deviation of different image heights of light rays on the imaging plane after passing 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.

[0099] Example 2

[0100] The following refers to Figures 3 to 4D to describe the optical imaging lens according to Embodiment 2 of the present application. In this embodiment and the following embodiments, for the sake of simplicity, some descriptions similar to those in Embodiment 1 will be omitted. Figure 3 shows a schematic structural diagram of the optical imaging lens according to Embodiment 2 of the present application.

[0101] As Figure 3 shown, the optical imaging lens sequentially includes, from the object side to the image side: a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an imaging surface S15.

[0102] The first lens E1 has a negative focal power, its object side surface S1 is a convex surface, and its image side surface S2 is a concave surface. The second lens E2 has a positive focal power, its object side surface S3 is a convex surface, and its image side surface S4 is a convex surface. The third lens E3 has a negative focal 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 positive focal power, its object side surface S7 is a convex surface, and its image side surface S8 is a convex surface. The fifth lens E5 has a negative focal power, its object side surface S9 is a convex surface, and its image side surface S10 is a concave surface. The sixth lens E6 has a negative focal power, its object side surface S11 is a convex surface, and its image side surface S12 is a concave surface. The filter E7 has an object side surface S13 and an image side surface S14. Light from the object sequentially passes through the surfaces S1 to S14 and finally forms an image on the imaging surface S15.

[0103] In this example, the total effective focal length f of the optical imaging lens is 1.99 mm, the total length TTL of the optical imaging lens is 4.05 mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S15 of the optical imaging lens is 1.81 mm, the ratio f / EPD of the total effective focal length f of the optical imaging lens to the entrance pupil diameter EPD of the optical imaging lens is 2.19, and the maximum field of view angle FOV of the optical imaging lens is 105.1°.

[0104] Table 3 shows the basic parameter table of the optical imaging lens of Example 2, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm). Table 4 shows the higher-order term coefficients of each aspherical mirror surface that can be used in Example 2, where each aspherical surface type can be defined by formula (1) given in the above Example 1.

[0105]

[0106] Table 3

[0107]

[0108]

[0109] Table 4

[0110] Figure 4A Shows the axial chromatic aberration curve of the optical imaging lens of Example 2, which represents the deviation of the convergence points of light rays of different wavelengths after passing through the lens. Figure 4B Shows the astigmatism curve of the optical imaging lens of Example 2, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 4C Shows the distortion curve of the optical imaging lens of Example 2, which represents the distortion magnitude values corresponding to different field of view angles. Figure 4D Shows the lateral chromatic aberration curve of the optical imaging lens of Example 2, which represents the deviation of different image heights on the imaging surface after the light rays pass through the lens. According to Figures 4A to 4D It can be seen that the optical imaging lens given in Example 2 can achieve good imaging quality.

[0111] Example 3

[0112] The following refers to Figures 5 to 6D Describes the optical imaging lens according to Embodiment 3 of the present application. Figure 5 Shows a schematic structural diagram of the optical imaging lens according to Embodiment 3 of the present application.

[0113] As Figure 5As shown in the figure, the optical imaging lens sequentially includes, from the object side to the image side: a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an imaging surface S15.

[0114] The first lens E1 has a negative focal power. Its object surface S1 is convex, and its image surface S2 is concave. The second lens E2 has a positive focal power. Its object surface S3 is convex, and its image surface S4 is convex. The third lens E3 has a negative focal power. Its object surface S5 is convex, and its image surface S6 is concave. The fourth lens E4 has a positive focal power. Its object surface S7 is convex, and its image surface S8 is convex. The fifth lens E5 has a negative focal power. Its object surface S9 is convex, and its image surface S10 is concave. The sixth lens E6 has a positive focal power. Its object surface S11 is convex, and its image surface S12 is concave. The filter E7 has an object surface S13 and an image surface S14. Light from the object sequentially passes through the surfaces S1 to S14 and finally forms an image on the imaging surface S15.

[0115] In this example, the total effective focal length f of the optical imaging lens is 1.30 mm, the total length TTL of the optical imaging lens is 4.29 mm, half of the diagonal length of the effective pixel area on the imaging surface S15 of the optical imaging lens is ImgH = 1.61 mm, the ratio f / EPD of the total effective focal length f of the optical imaging lens to the entrance pupil diameter EPD of the optical imaging lens is 2.20, and the maximum field of view FOV of the optical imaging lens is 100.0°.

[0116] Table 5 shows the basic parameter table of the optical imaging lens of Example 3, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm). Table 6 shows the high-order term coefficients of the aspherical mirror surfaces that can be used in Example 3, where each aspherical surface type can be defined by the formula (1) given in the above Example 1.

[0117]

[0118]

[0119] Table 5

[0120] Surface number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 8.6105E-01 -1.7651E+00 3.3384E+00 -4.5359E+00 3.8072E+00 -1.7551E+00 3.3906E-01 0.0000E+00 0.0000E+00 S2 1.1248E+00 -9.2713E-01 -2.9980E+00 2.6481E+01 -6.2330E+01 4.4307E+01 2.2974E+01 0.0000E+00 0.0000E+00 S3 1.3856E+00 -8.8608E+00 4.9783E+01 -2.1881E+02 5.5510E+02 -6.5784E+02 -2.9381E+01 0.0000E+00 0.0000E+00 S4 -6.5015E-01 9.4143E-01 -9.7655E+00 6.5559E+01 -2.9308E+02 7.0541E+02 -7.5889E+02 0.0000E+00 0.0000E+00 S5 -2.8046E-01 -5.8177E+00 2.5419E+01 -1.0089E+02 2.9362E+02 -4.0143E+02 1.8766E+02 0.0000E+00 0.0000E+00 S6 1.5572E-01 -5.0542E+00 3.2324E+01 -1.3698E+02 3.4386E+02 -4.4183E+02 2.3281E+02 0.0000E+00 0.0000E+00 S7 3.5811E-01 -4.5297E+00 5.1699E+01 -3.0091E+02 1.0134E+03 -2.0882E+03 2.5959E+03 -1.7735E+03 4.9982E+02 S8 -2.9869E-02 -6.2596E+00 5.6655E+01 -2.5625E+02 7.5461E+02 -1.4703E+03 1.7910E+03 -1.2247E+03 3.5777E+02 S9 -1.3083E+00 -4.2883E-01 1.5025E+01 -4.9646E+01 7.3755E+01 -5.2673E+01 1.5224E+01 0.0000E+00 0.0000E+00 S10 -7.1153E-01 5.8557E-01 2.4762E+00 -1.0102E+01 1.5747E+01 -1.1564E+01 3.3395E+00 0.0000E+00 0.0000E+00 S11 -6.8377E-01 -1.0751E+00 5.4731E+00 -9.7048E+00 8.3598E+00 -3.1265E+00 2.4989E-01 0.0000E+00 0.0000E+00 S12 -1.4791E+00 2.2590E+00 -2.2260E+00 1.2809E+00 -3.9517E-01 5.2776E-02 -1.4162E-03 0.0000E+00 0.0000E+00

[0121] Table 6

[0122] Figure 6A Shows the axial chromatic aberration curve of the optical imaging lens of Example 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 Example 3, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 6CThe distortion curve of the optical imaging lens of Embodiment 3 is shown, which represents the distortion magnitude values corresponding to different field angles of view. Figure 6D The longitudinal chromatic aberration curve of the optical imaging lens of Embodiment 3 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to Figures 6A to 6D it can be known that the optical imaging lens given in Embodiment 3 can achieve good imaging quality.

[0123] Example 4

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

[0125] As Figure 7 shown, the optical imaging lens sequentially includes, from the object side to the image side: a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an imaging surface S15.

[0126] The first lens E1 has a negative optical power, its object surface S1 is convex, and its image surface S2 is concave. The second lens E2 has a positive optical power, its object surface S3 is convex, and its image surface S4 is convex. The third lens E3 has a negative optical power, its object surface S5 is convex, and its image surface S6 is concave. The fourth lens E4 has a positive optical power, its object surface S7 is convex, and its image surface S8 is convex. The fifth lens E5 has a negative optical power, its object surface S9 is convex, and its image surface S10 is concave. The sixth lens E6 has a positive optical power, its object surface S11 is convex, and its image surface S12 is concave. The filter E7 has an object surface S13 and an image surface S14. Light from the object sequentially passes through each surface S1 to S14 and finally forms an image on the imaging surface S15.

[0127] In this example, the total effective focal length f of the optical imaging lens is 1.50 mm, the total length TTL of the optical imaging lens is 3.81 mm, half of the diagonal length of the effective pixel region on the imaging surface S15 of the optical imaging lens is ImgH = 1.86 mm, the ratio f / EPD of the total effective focal length f of the optical imaging lens to the entrance pupil diameter EPD of the optical imaging lens is 2.20, and the maximum field angle FOV of the optical imaging lens is 112.0°.

[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 / distance, and focal length are all millimeters (mm). Table 8 shows the higher-order term coefficients that can be used for each aspherical mirror surface in Embodiment 4, where each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0129]

[0130] Table 7

[0131]

[0132]

[0133] Table 8

[0134] Figure 8A The axial chromatic aberration curve of the optical imaging lens of Example 4 is shown, which represents the deviation of the focusing points of light rays with different wavelengths after passing through the lens. Figure 8B The astigmatism curve of the optical imaging lens of Example 4 is shown, which represents the meridional image plane curvature and the sagittal image plane 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 field angles. Figure 8D The lateral chromatic aberration curve of the optical imaging lens of Example 4 is shown, which represents the deviation of different image heights of light rays on the imaging plane after passing through the lens. According to Figures 8A to 8D It can be seen that the optical imaging lens given in Example 4 can achieve good imaging quality.

[0135] Example 5

[0136] The following refers to Figures 9 to 10D The optical imaging lens according to Embodiment 5 of the present application is described. Figure 9 The structural schematic diagram of the optical imaging lens according to Embodiment 5 of the present application is shown.

[0137] As Figure 9 shown, the optical imaging lens sequentially includes, from the object side to the image side: a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an imaging surface S15.

[0138] The first lens E1 has a negative optical power, its object surface S1 is concave, and its image surface S2 is concave. The second lens E2 has a positive optical power, its object surface S3 is convex, and its image surface S4 is convex. The third lens E3 has a negative optical power, its object surface S5 is convex, and its image surface S6 is concave. The fourth lens E4 has a positive optical power, its object surface S7 is convex, and its image surface S8 is convex. The fifth lens E5 has a negative optical power, its object surface S9 is convex, and its image surface S10 is concave. The sixth lens E6 has a negative optical power, its object surface S11 is convex, and its image surface S12 is concave. The filter E7 has an object surface S13 and an image surface S14. Light from the object sequentially passes through the surfaces S1 to S14 and finally forms an image on the imaging surface S15.

[0139] In this example, the total effective focal length f of the optical imaging lens is 1.88 mm, the total length TTL of the optical imaging lens is 4.27 mm, half of the diagonal length of the effective pixel region on the imaging surface S15 of the optical imaging lens is ImgH = 1.85 mm, the ratio f / EPD of the total effective focal length f of the optical imaging lens to the entrance pupil diameter EPD of the optical imaging lens is 2.20, and the maximum field of view angle FOV of the optical imaging lens is 111.9°.

[0140] Table 9 shows the basic parameter table of the optical imaging lens of Example 5, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm). Table 10 shows the higher-order term coefficients of the aspherical mirror surfaces that can be used in Example 5, where each aspherical surface type can be defined by the formula (1) given in the above Example 1.

[0141]

[0142] Table 9

[0143] Surface number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 3.0578E-01 -4.0097E-01 5.0365E-01 -5.5566E-01 4.5273E-01 -2.1915E-01 4.5205E-02 0.0000E+00 0.0000E+00 S2 6.0927E-01 -3.6188E-01 3.3001E+00 -1.9495E+01 9.4752E+01 -2.3380E+02 2.5571E+02 0.0000E+00 0.0000E+00 S3 4.8347E-02 1.0475E+00 -2.1882E+01 1.8461E+02 -8.5913E+02 2.0754E+03 -2.0415E+03 0.0000E+00 0.0000E+00 S4 -9.8467E-01 2.1784E+00 -6.4286E+00 1.4682E+01 -2.7508E+01 3.5442E+01 -2.3142E+01 0.0000E+00 0.0000E+00 S5 -3.3270E-01 -2.7756E-01 2.1215E+00 -5.0687E+00 4.7442E+00 6.3830E-01 -2.7868E+00 0.0000E+00 0.0000E+00 S6 -3.2131E-02 -5.6829E-01 1.8446E+00 -2.4258E+00 4.7145E-01 1.8711E+00 -1.2485E+00 0.0000E+00 0.0000E+00 S7 5.7187E-02 -1.8174E-01 3.7722E-01 -7.5808E-01 2.2538E+00 -5.9060E+00 8.7892E+00 -6.3142E+00 1.7150E+00 S8 3.7120E-01 -1.4135E+00 4.8888E+00 -1.4015E+01 2.8591E+01 -3.9112E+01 3.4275E+01 -1.7435E+01 3.9234E+00 S9 4.7463E-02 -2.3174E-02 -7.0092E-01 5.7250E-01 9.9592E-02 -8.0990E-02 -1.0964E-01 0.0000E+00 0.0000E+00 S10 -2.2276E-02 4.6456E-01 -1.6185E+00 2.1188E+00 -1.3946E+00 4.6436E-01 -6.1922E-02 0.0000E+00 0.0000E+00 S11 -6.8493E-01 1.7441E-01 8.2841E-01 -1.4708E+00 1.0571E+00 -3.4349E-01 4.2015E-02 0.0000E+00 0.0000E+00 S12 -5.8083E-01 7.2964E-01 -6.4039E-01 3.6446E-01 -1.3347E-01 2.8151E-02 -2.6300E-03 0.0000E+00 0.0000E+00

[0144] Table 10

[0145] Figure 10A shows the axial chromatic aberration curve of the optical imaging lens of Example 5, which represents the deviation of the convergence points of light rays of different wavelengths after passing through the lens. Figure 10B shows the astigmatism curve of the optical imaging lens of Example 5, which represents the 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 field of view angles. 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 surface 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.

[0146] Example 6

[0147] The following refers to Figures 11 to 12D describes 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.

[0148] As Figure 11 shown, the optical imaging lens sequentially includes, from the object side to the image side: a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an imaging surface S15.

[0149] The first lens E1 has a negative optical power, its object side S1 is convex, and its image side S2 is concave. The second lens E2 has a positive optical power, its object side S3 is convex, and its image side S4 is convex. The third lens E3 has a negative optical power, its object side S5 is concave, and its image side S6 is concave. The fourth lens E4 has a positive optical power, its object side S7 is convex, and its image side S8 is convex. The fifth lens E5 has a negative optical power, its object side S9 is convex, and its image side S10 is concave. The sixth lens E6 has a negative optical power, its object side S11 is convex, and its image side S12 is concave. The filter E7 has an object side S13 and an image side S14. Light from the object sequentially passes through the surfaces S1 to S14 and finally forms an image on the imaging surface S15.

[0150] In this example, the total effective focal length f of the optical imaging lens is 1.86 mm, the total length TTL of the optical imaging lens is 4.47 mm, half of the diagonal length of the effective pixel region on the imaging surface S15 of the optical imaging lens is ImgH = 1.85 mm, the ratio f / EPD of the total effective focal length f of the optical imaging lens to the entrance pupil diameter EPD of the optical imaging lens is 2.20, and the maximum field of view angle FOV of the optical imaging lens is 111.9°.

[0151] Table 11 shows the basic parameter table of the optical imaging lens of Example 6, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm). Table 12 shows the higher-order term coefficients of the aspherical mirrors that can be used in Example 6, where each aspherical surface type can be defined by the formula (1) given in the above Example 1.

[0152]

[0153] Table 11

[0154] Surface number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 2.8715E-01 -2.8238E-01 2.9329E-01 -2.6165E-01 1.4135E-01 -4.1793E-02 5.3933E-03 0.0000E+00 0.0000E+00 S2 6.2566E-01 -1.1158E-01 9.6523E-01 -1.5747E+00 1.4597E+01 -4.6710E+01 6.4077E+01 0.0000E+00 0.0000E+00 S3 6.8189E-02 7.9552E-01 -1.6476E+01 1.3760E+02 -6.4485E+02 1.5646E+03 -1.5456E+03 0.0000E+00 0.0000E+00 S4 -9.1415E-01 2.0009E+00 -6.1901E+00 1.3232E+01 -2.0480E+01 2.0230E+01 -1.1420E+01 0.0000E+00 0.0000E+00 S5 -2.7577E-01 -6.8410E-01 2.8047E+00 -5.5834E+00 3.5966E+00 4.1289E+00 -5.0084E+00 0.0000E+00 0.0000E+00 S6 7.9828E-02 -1.5395E+00 5.3615E+00 -9.6184E+00 8.6994E+00 -2.7018E+00 -3.7007E-01 0.0000E+00 0.0000E+00 S7 1.2175E-01 -7.9245E-01 2.5799E+00 -3.7664E+00 9.8796E-02 7.4305E+00 -1.0416E+01 6.3374E+00 -1.5667E+00 S8 4.1040E-01 -1.9947E+00 7.4960E+00 -2.0044E+01 3.6445E+01 -4.3895E+01 3.3659E+01 -1.4996E+01 2.9848E+00 S9 1.2349E-01 -7.9646E-01 2.0276E+00 -4.9502E+00 7.0214E+00 -5.0782E+00 1.4484E+00 0.0000E+00 0.0000E+00 S10 4.5307E-02 8.6336E-02 -8.8017E-01 1.3697E+00 -9.6452E-01 3.2350E-01 -4.0833E-02 0.0000E+00 0.0000E+00 S11 -5.3939E-01 -4.1192E-01 2.1059E+00 -3.4533E+00 2.9436E+00 -1.2650E+00 2.1543E-01 0.0000E+00 0.0000E+00 S12 -6.8908E-01 9.0331E-01 -8.2956E-01 4.9663E-01 -1.9081E-01 4.2216E-02 -4.1300E-03 0.0000E+00 0.0000E+00

[0155] Table 12

[0156] Figure 12A Shows the axial chromatic aberration curve of the optical imaging lens of Example 6, which represents the deviation of the convergence points of light rays of different wavelengths after passing through the lens. Figure 12B Shows the astigmatism curve of the optical imaging lens of Example 6, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 12C Shows the distortion curve of the optical imaging lens of Example 6, which represents the distortion magnitude values corresponding to different field of view angles. Figure 12D Shows the lateral chromatic aberration curve of the optical imaging lens of Example 6, which represents the deviation of different image heights on the imaging surface after the light rays pass through the lens. According to Figures 12A to 12D It can be seen that the optical imaging lens given in Example 6 can achieve good imaging quality.

[0157] In summary, Examples 1 to 6 respectively satisfy the relationships shown in Table 13.

[0158] Conditional / Example 1 2 3 4 5 6 ImgH×EPD / f(mm) 0.87 0.83 0.73 0.84 0.84 0.84 SL / TTL 0.87 0.87 0.70 0.80 0.85 0.81 f4 / f 0.72 0.71 1.17 0.92 0.76 0.78 f23 / f456 0.68 0.72 1.11 0.99 0.66 0.76 f1 / f3 - f2 / f5 1.23 1.19 1.18 1.34 1.14 1.20 CT6 / ET6 0.64 0.75 0.70 1.03 1.01 1.02 DT12 / DT61 0.47 0.50 0.68 0.46 0.50 0.51 CT4 / DT41 0.87 0.88 0.92 0.82 0.76 0.83 R2 / R6 0.64 0.84 0.70 0.29 0.69 0.41 R4 / (R4 - R3) 0.31 0.37 0.74 0.63 0.36 0.37 (R9 - R10) / (R9 + R10) 0.81 0.96 0.60 0.66 0.91 0.98 R8 / (R8 - R11) 0.47 0.38 0.68 0.44 0.50 0.56 CT4 / ΣAT 0.85 0.84 0.39 0.51 0.67 0.66

[0159] Table 13

[0160] The present application also provides an imaging device, and its electronic photosensitive element can be a charge-coupled device (CCD) or a complementary metal-oxide-semiconductor device (CMOS). The imaging device can be an independent imaging device such as a digital camera, or an imaging module integrated on a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens described above.

[0161] The above description is only a preferred embodiment of the present application and an explanation 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 solution formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the technical solution 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. Optical imaging lens, Characterized in that, Sequentially includes from the object side to the image side along the optical axis: A first lens with negative focal power, whose image side is concave; A second lens with positive focal power, whose object side is convex and image side is convex; A third lens with negative focal power, whose image side is concave; A fourth lens with positive focal power, whose image side is convex; A fifth lens with negative focal power, whose object side is convex and image side is concave; and A sixth lens with focal power, whose object side is convex and image side is concave; The number of lenses with focal power in the optical imaging lens is six; The maximum field of view angle FOV of the optical imaging lens satisfies: 99° < FOV < 113°; The central thickness CT4 of the fourth lens on the optical axis and the sum ΣAT of the spacing distances on the optical axis between any two adjacent lenses among the first lens to the sixth lens satisfy: 0.39 ≤ CT4 / ΣAT ≤ 0.85; and Half of the diagonal length ImgH of the effective pixel region on the imaging surface of the optical imaging lens, the total effective focal length f of the optical imaging lens, and the entrance pupil diameter EPD of the optical imaging lens satisfy: 0.73mm ≤ ImgH×EPD / f ≤ 0.87mm.

2. The optical imaging lens according to claim 1, Characterized in that, The optical imaging lens further includes a diaphragm, and the distance TTL on the optical axis from the object side of the first lens to the imaging surface of the optical imaging lens and the distance SL on the optical axis from the diaphragm to the imaging surface of the optical imaging lens satisfy: 0.70 ≤ SL / TTL < 0.

9.

3. The optical imaging lens according to claim 1, Characterized in that, The effective focal length f4 of the fourth lens and the total effective focal length f of the optical imaging lens satisfy: 0.71 ≤ f4 / f < 1.

2.

4. The optical imaging lens according to claim 1, Characterized in that, The combined focal length f23 of the second lens and the third lens and the combined focal length f456 of the fourth lens, the fifth lens and the sixth lens satisfy: 0.66 ≤ f23 / f456 ≤ 1.

11.

5. The optical imaging lens according to claim 1, Characterized in that, 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 f5 of the fifth lens satisfy: 1.1 < f1 / f3 - f2 / f5 ≤ 1.

34.

6. The optical imaging lens according to claim 1, Characterized in that, The edge thickness ET6 of the sixth lens and the central thickness CT6 of the sixth lens on the optical axis satisfy: 0.6 < CT6 / ET6 ≤ 1.

03.

7. The optical imaging lens according to claim 1, Characterized in that, The maximum effective radius DT12 of the image side of the first lens and the maximum effective radius DT61 of the object side of the sixth lens satisfy: 0.46 ≤ DT12 / DT61 < 0.

7.

8. The optical imaging lens according to claim 1, Characterized in that, The central thickness CT4 of the fourth lens on the optical axis and the maximum effective radius DT41 of the object side surface of the fourth lens satisfy: 0.76 ≤ CT4 / DT41 ≤ 0.

92.

9. The optical imaging lens according to claim 1, wherein, the radius of curvature R2 of the image side surface of the first lens and the radius of curvature R6 of the image side surface of the third lens satisfy: 0.29 ≤ R2 / R6 ≤ 0.

84.

10. The optical imaging lens according to claim 1, wherein, the radius of curvature R3 of the object side surface of the second lens and the radius of curvature R4 of the image side surface of the second lens satisfy: 0.31 ≤ R4 / (R4 - R3) ≤ 0.

74.

11. The optical imaging lens according to claim 1, wherein, the radius of curvature R9 of the object side surface of the fifth lens and the radius of curvature R10 of the image side surface of the fifth lens satisfy: 0.60 ≤ (R9 - R10) / (R9 + R10) < 1.

0.

12. The optical imaging lens according to claim 1, wherein, the radius of curvature R8 of the image side surface of the fourth lens and the radius of curvature R11 of the object side surface of the sixth lens satisfy: 0.38 ≤ R8 / (R8 - R11) < 0.7.

Images