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 positive optical power; a second lens with positive optical power; a third lens, whose object side surface is convex and image side surface is concave; a fourth lens; a fifth lens with positive optical power; a sixth lens with negative optical power; wherein, the on-axis distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens, half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens, and the maximum field of view FOV of the optical imaging lens satisfy: TTL / ImgH < 1.3; and TTL / tan(FOV / 2) < 4.5 mm.

Description

Technical Field

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

[0002] With the continuous enhancement of the photography function of mobile phones, the pictures taken by mobile phones can even rival those taken by professional cameras. More and more photography enthusiasts have recently directly used mobile phones to take pictures. To meet different shooting requirements, various different types of lenses have been installed on mobile phones in recent years. Different lenses can meet different shooting requirements, and different types of pictures can be obtained by using different lenses. For example, in order to take pictures of people in various styles, some photography enthusiasts like to use mobile phones equipped with wide-angle lenses for shooting.

[0003] To meet the miniaturization requirements and imaging requirements, an optical imaging lens is needed that can balance at least one of large aperture, large image plane, and good imaging quality on the basis of ultra-thinness and large field of view angle. Summary of the Invention

[0004] This application provides an optical imaging lens applicable to portable electronic products, which can at least solve or partially solve the above-mentioned at least one drawback in the prior art.

[0005] This 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 positive optical power; a second lens with positive optical power; a third lens, whose object side is convex and image side is concave; a fourth lens; a fifth lens with positive optical power; a sixth lens with negative optical power; wherein, the on-axis distance TTL from the object side of the first lens to the imaging surface of the optical imaging lens, half ImgH of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens, and the maximum field of view angle FOV of the optical imaging lens can satisfy: TTL / ImgH < 1.3 and TTL / tan(FOV / 2) < 4.5 mm.

[0006] In one embodiment, at least one of the object side of the first lens to the image side of the sixth lens has an aspherical mirror surface.

[0007] In one embodiment, the total effective focal length f of the optical imaging lens, the curvature radius R5 of the object side of the third lens, and the curvature radius R6 of the image side of the third lens can satisfy: 0.3 < f / (R5 + R6) < 0.9.

[0008] In one embodiment, the effective focal length f5 of the fifth lens, the curvature radius R10 of the image side of the fifth lens, and the curvature radius R9 of the object side of the fifth lens can satisfy: 0.8 < f5 / (R10 - R9) < 2.8.

[0009] In one embodiment, the effective focal length f1 of the first lens and the effective focal length f2 of the second lens may satisfy: 0.8 < f1 / f2 < 1.4.

[0010] In one embodiment, the effective focal length f6 of the sixth lens and the central thickness CT6 of the sixth lens on the optical axis may satisfy: -4.5 < f6 / CT6 < -2.5.

[0011] In one embodiment, the maximum field of view FOV of the optical imaging lens may satisfy: 92° < FOV < 102°.

[0012] In one embodiment, the axial spacing distance T34 between the third lens and the fourth lens on the optical axis and the central thickness CT3 of the third lens on the optical axis may satisfy: 0.8 < T34 / CT3 < 1.3.

[0013] In one embodiment, the axial spacing distance T56 between the fifth lens and the sixth lens on the optical axis and the central thickness CT6 of the sixth lens on the optical axis may satisfy: 0.4 < T56 / CT6 × 10 < 1.2.

[0014] In one embodiment, the effective semi-aperture DT62 of the image side of the sixth lens, the effective semi-aperture DT31 of the object side of the third lens, and the effective semi-aperture DT32 of the image side of the third lens may satisfy: 1.1 < DT62 / (DT31 + DT32) < 1.5.

[0015] In one embodiment, the combined focal length f12 of the first lens and the second lens and the combined focal length f45 of the fourth lens and the fifth lens may satisfy: 1.4 < f12 / f45 < 2.1.

[0016] In one embodiment, the axial distance SAG31 between the intersection of the object side of the third lens and the optical axis and the vertex of the effective radius of the object side of the third lens, the axial distance SAG32 between the intersection of the image side of the third lens and the optical axis and the vertex of the effective radius of the image side of the third lens, and the total effective focal length f of the optical imaging lens may satisfy: 0.5 < (SAG31 + SAG32) / f × 10 < 1.2.

[0017] On the other hand, the present application also provides an optical imaging lens, which sequentially includes, 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 positive optical power; a third lens, whose object side is convex and image side is concave; a fourth lens; a fifth lens with a positive optical power; a sixth lens with a negative optical power; wherein, the on-axis distance TTL from the object side of the first lens to the imaging surface of the optical imaging lens and half of the diagonal length ImgH of the effective pixel region on the imaging surface of the optical imaging lens satisfy: TTL / ImgH < 1.3; the total effective focal length f of the optical imaging lens, the curvature radius R5 of the object side of the third lens, and the curvature radius R6 of the image side of the third lens satisfy: 0.3 < f / (R5 + R6) < 0.9.

[0018] In one embodiment, the effective focal length f5 of the fifth lens, the curvature radius R10 of the image side of the fifth lens, and the curvature radius R9 of the object side of the fifth lens satisfy: 0.8 < f5 / (R10 - R9) < 2.8.

[0019] In one embodiment, the on-axis distance TTL from the object side of the first lens to the imaging surface of the optical imaging lens and the maximum field of view FOV of the optical imaging lens satisfy: TTL / tan(FOV / 2) < 4.5mm.

[0020] In one embodiment, the effective focal length f1 of the first lens and the effective focal length f2 of the second lens satisfy: 0.8 < f1 / f2 < 1.4.

[0021] In one embodiment, the effective focal length f6 of the sixth lens and the central thickness CT6 of the sixth lens on the optical axis satisfy: -4.5 < f6 / CT6 < -2.5.

[0022] In one embodiment, the maximum field of view FOV of the optical imaging lens satisfies: 92° < FOV < 102°.

[0023] In one embodiment, the spacing distance T34 between the third lens and the fourth lens on the optical axis and the central thickness CT3 of the third lens on the optical axis satisfy: 0.8 < T34 / CT3 < 1.3.

[0024] In one embodiment, the spacing distance T56 between the fifth lens and the sixth lens on the optical axis and the central thickness CT6 of the sixth lens on the optical axis satisfy: 0.4 < T56 / CT6×10 < 1.2.

[0025] In one embodiment, the effective semi-aperture DT62 of the image side of the sixth lens, the effective semi-aperture DT31 of the object side of the third lens, and the effective semi-aperture DT32 of the image side of the third lens satisfy: 1.1 < DT62 / (DT31 + DT32) < 1.5.

[0026] In one embodiment, the combined focal length f12 of the first lens and the second lens and the combined focal length f45 of the fourth lens and the fifth lens may satisfy: 1.4 < f12 / f45 < 2.1.

[0027] In one embodiment, the axial distance SAG31 between the intersection of the object side surface of the third lens and the optical axis and the vertex of the effective radius of the object side surface of the third lens, the axial distance SAG32 between the intersection of the image side surface of the third lens and the optical axis and the vertex of the effective radius of the image side surface of the third lens, and the total effective focal length f of the optical imaging lens may satisfy: 0.5 < (SAG31 + SAG32) / f × 10 < 1.2.

[0028] This application uses six lenses. By reasonably distributing the optical power, surface shape, central thickness of each lens, and the axial spacing between each lens, etc., and by controlling at least parameters such as the total optical length of the optical imaging lens, the above optical imaging lens has at least one beneficial effect such as a large aperture, a large image plane, a large field of view angle, and ultra-thin. The optical imaging lens is suitable for use as a front camera of portable electronic devices such as mobile phones. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In conjunction with the accompanying drawings, through the following detailed description of non-limiting embodiments, other features, objects, and advantages of this application will become more apparent. In the drawings:

[0030] Figure 1 shows a schematic structural diagram of an optical imaging lens according to Embodiment 1 of this application; 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;

[0031] Figure 3 shows a schematic structural diagram of an optical imaging lens according to Embodiment 2 of this application; 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;

[0032] Figure 5 shows a schematic structural diagram of an optical imaging lens according to Embodiment 3 of this application; 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;

[0033] Figure 7 shows a schematic structural diagram of an optical imaging lens according to Embodiment 4 of this application; 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;

[0034] Figure 9 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 5 of the present application; 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;

[0035] Figure 11 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 6 of the present application; 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. Detailed implementation manners

[0036] 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.

[0037] It should be noted that in this specification, the expressions such as first, second, and third are only used to distinguish one feature from another feature and do not represent any limitation on the 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.

[0038] In the drawings, for ease of illustration, the thickness, size, and shape of the lenses have been slightly exaggerated. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to the spherical or aspherical shapes shown in the drawings. The drawings are only for illustration and are not drawn strictly to scale.

[0039] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens 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.

[0040] It should also be understood that the terms "comprise", "comprising", "have", "including" and / or "containing", when used in this specification, denote the presence of the stated features, elements and / or components, but do not preclude the presence or addition of one or more other features, elements, components and / or combinations thereof. In addition, when an expression such as "at least one of..." appears after a list of listed features, it modifies the entire list of listed features rather than an individual element in the list. In addition, when describing embodiments of the present application, the use of "may" means "one or more embodiments of the present application". Also, the term "exemplary" is intended to refer to an example or illustration.

[0041] 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.

[0042] 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 accompanying drawings and in conjunction with the embodiments.

[0043] The features, principles and other aspects of the present application will be described in detail below.

[0044] The optical imaging lens according to an exemplary embodiment of the present application may include, for example, six lenses having 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 order from the object side to the image side along the optical axis. An air gap may be provided between any two adjacent lenses among the first lens to the sixth lens.

[0045] In an exemplary embodiment, the first lens may have a positive optical power; the second lens may have a positive optical power; the third lens may have a positive or negative optical power, its object side may be convex, and its image side may be concave; the fourth lens may have a positive or negative optical power; the fifth lens may have a positive optical power; the sixth lens has a negative optical power. The first lens and the second lens with positive optical powers converge light rays. By mounting the third lens with a convex object side and a concave image side, it is beneficial for achromatism correction. Combined with the fourth lens, spherical aberration, coma, and astigmatism of the optical imaging lens can be comprehensively eliminated. The fifth lens with a positive optical power is beneficial for optimizing the field curvature of the optical imaging lens, reducing the dispersion of the optical imaging lens, and improving the phenomenon of interlaced field curvature of the optical imaging lens. By mounting the sixth lens with a negative optical power, the effective radius of the sixth lens can be effectively reduced in terms of structure, the image plane of the optical imaging lens can be increased, the focal length of the optical imaging lens can be reduced, the field of view angle of the optical imaging lens can be increased, and the field curvature of the outer field of the optical imaging lens can be improved.

[0046] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula TTL / ImgH < 1.3, where TTL is the on-axis distance from the object side of the first lens to the imaging plane of the optical imaging lens, and ImgH is half of the diagonal length of the effective pixel region on the imaging plane of the optical imaging lens. By controlling the ratio of the overall optical length to the image height within this range, it is beneficial to compress the ratio of the overall structure length to the image plane size of the optical imaging lens, thereby helping the optical imaging lens achieve an ultra-thin effect. More specifically, TTL and ImgH may satisfy: 1.2 < TTL / ImgH < 1.3.

[0047] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula TTL / tan(FOV / 2) < 4.5 mm, where TTL is the on-axis distance from the object side of the first lens to the imaging plane of the optical imaging lens, and FOV is the maximum field of view angle of the optical imaging lens. Satisfying TTL / tan(FOV / 2) < 4.5 mm can increase the field of view angle of the optical imaging lens while controlling the overall optical length, thereby increasing the object-taking space of the optical imaging lens. More specifically, TTL and FOV may satisfy: TTL / tan(FOV / 2) < 4.0 mm.

[0048] Exemplarily, in an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formulas TTL / ImgH < 1.3 and TTL / tan(FOV / 2) < 4.5 mm. The ultra-thin effect can be better achieved.

[0049] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 0.3 < f / (R5 + R6) < 0.9, where f is the total effective focal length of the optical imaging lens, R5 is the curvature radius of the object side surface of the third lens, and R6 is the curvature radius of the image side surface of the third lens. By satisfying 0.3 < f / (R5 + R6) < 0.9, the surface shape of the third lens can be reasonably distributed and its relationship with the total effective focal length can be controlled, which is beneficial to constraining the lens structure of the third lens and at the same time beneficial to optimizing the chromatic aberration of the optical imaging lens. More specifically, f, R5, and R6 can satisfy: 0.35 < f / (R5 + R6) < 0.85.

[0050] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 0.8 < f5 / (R10 - R9) < 2.8, where f5 is the effective focal length of the fifth lens, R10 is the curvature radius of the image side surface of the fifth lens, and R9 is the curvature radius of the object side surface of the fifth lens. By satisfying 0.8 < f5 / (R10 - R9) < 2.8, the shape of the fifth lens can be controlled to facilitate the molding of the fifth lens, and at the same time the field curvature of the outer field of view of the optical imaging lens can be reduced.

[0051] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 0.8 < f1 / f2 < 1.4, where f1 is the effective focal length of the first lens and f2 is the effective focal length of the second lens. By controlling 0.8 < f1 / f2 < 1.4, the optical powers of the first lens and the second lens can be reasonably distributed, and thus the spherical aberration and chromatic aberration of the optical imaging lens can be reduced. More specifically, f1 and f2 can satisfy: 0.86 < f1 / f2 < 1.38.

[0052] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula -4.5 < f6 / CT6 < -2.5, where f6 is the effective focal length of the sixth lens and CT6 is the central thickness of the sixth lens on the optical axis. By controlling the ratio of the effective focal length of the sixth lens to its central thickness within this range, the strength of the optical imaging lens can be enhanced, the optical power of the optical imaging lens can be increased, and it is also beneficial to increase the field of view angle of the optical imaging lens. More specifically, f6 and CT6 satisfy: -4.43 < f6 / CT6 < -2.55.

[0053] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 92° < FOV < 102°, where FOV is the maximum field of view angle of the optical imaging lens. By controlling the maximum field of view angle of the optical imaging lens, the photographing space of the object surface can be increased. Furthermore, a broader photographing experience can be presented to the user using this optical imaging lens. More specifically, FOV can satisfy: 95° < FOV < 101°.

[0054] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 0.8 < T34 / CT3 < 1.3, where T34 is the distance between the third lens and the fourth lens on the optical axis, and CT3 is the central thickness of the third lens on the optical axis. By controlling the ratio of the central thickness of the third lens to the air gap between the third lens and the fourth lens within this range, the sensitivity of the third lens to the central thickness and the gap can be reduced, and at the same time, it is beneficial to the structural arrangement of the optical imaging lens. More specifically, T34 and CT3 can satisfy: 0.90 < T34 / CT3 < 1.28.

[0055] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 0.4 < T56 / CT6×10 < 1.2, where T56 is the distance between the fifth lens and the sixth lens on the optical axis, and CT6 is the central thickness of the sixth lens on the optical axis. By controlling the ratio of the air gap between the fifth lens and the sixth lens to the central thickness of the sixth lens within this range, it is beneficial to adjust the field curvature of the optical imaging lens and at the same time beneficial to improve the illuminance of the edge field of view.

[0056] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 1.1 < DT62 / (DT31 + DT32) < 1.5, where DT62 is the effective semi-aperture of the image side of the sixth lens, DT31 is the effective semi-aperture of the object side of the third lens, and DT32 is the effective semi-aperture of the image side of the third lens. Satisfying 1.1 < DT62 / (DT31 + DT32) < 1.5 is beneficial to controlling the aperture relationship between the image side of the sixth lens and the two mirror surfaces of the third lens. Subsequently, when the optical imaging lens adopts a threaded assembly method, it is beneficial to reduce the size of the thread. In addition, it is also beneficial to constrain the light so that the light is gentle during the transmission process. More specifically, DT62, DT31, and DT32 can satisfy: 1.25 < DT62 / (DT31 + DT32) < 1.36.

[0057] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 1.4 < f12 / f45 < 2.1, where f12 is the combined focal length of the first lens and the second lens, and f45 is the combined focal length of the fourth lens and the fifth lens. Satisfying 1.4 < f12 / f45 < 2.1 is beneficial to reasonably distributing the combined optical power of the first lens and the second lens and the combined optical power of the fourth lens and the fifth lens in the optical imaging lens, thereby being beneficial to correcting the aberration of the optical imaging lens and at the same time beneficial to improving the imaging contrast of the optical imaging lens. More specifically, f12 and f45 can satisfy: 1.52 < f12 / f45 < 2.25.

[0058] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the condition 0.5 < (SAG31 + SAG32) / f × 10 < 1.2, where SAG31 is the axial distance between the intersection of the object side surface of the third lens and the optical axis and the vertex of the effective radius of the object side surface of the third lens, SAG32 is the axial distance between the intersection of the image side surface of the third lens and the optical axis and the vertex of the effective radius of the image side surface of the third lens, and f is the total effective focal length of the optical imaging lens. By controlling 0.5 < (SAG31 + SAG32) / f × 10 < 1.2, the relationship between the sag heights of the two side surfaces of the third lens and the total effective focal length can be controlled, which is beneficial to controlling the shape of the third lens and can improve the stray light phenomenon generated by the third lens. More specifically, SAG31, SAG32, and f may satisfy 0.50 < (SAG31 + SAG32) / f × 10 < 1.02.

[0059] In an exemplary embodiment, the above optical imaging lens may further include at least one aperture stop. The aperture stop can be set at an appropriate position as needed. For example, it can be set 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.

[0060] The optical imaging lens according to the above embodiment of the present application may employ multiple lenses, such as the six lenses described above. By reasonably distributing the optical power, surface type, central thickness of each lens, and the axial spacing between each lens, etc., the volume of the optical imaging lens can be effectively reduced, the sensitivity of the optical imaging lens can be lowered, 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 due to its ultra-thin characteristics. At the same time, the optical imaging lens of the present application also has excellent optical properties such as a large aperture, a large image surface, a large field of view angle, and high image quality.

[0061] In an embodiment of the present application, at least one of the mirror surfaces of each lens is an aspherical mirror surface, that is, at least one of the object side surface of the first lens to the image side surface of the sixth lens is an aspherical mirror surface. The characteristics of an aspherical lens are that the curvature changes continuously from the center of the lens to the periphery of the lens. Different from a spherical lens with a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has better curvature radius characteristics and has the advantages of improving distortion aberration and astigmatism aberration. After using an aspherical lens, it is possible to eliminate the aberration that appears during imaging as much as possible, thereby improving the imaging quality. Optionally, at least one of the object side surface and the image side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens is an aspherical mirror 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, the fifth lens, and the sixth lens are aspherical mirror surfaces.

[0062] However, those skilled in the art should understand that without departing from the technical solutions 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 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 also include other numbers of lenses.

[0063] The following further describes specific embodiments of the optical imaging lens applicable to the above embodiments with reference to the accompanying drawings.

[0064] Example 1

[0065] The following refers to Figures 1 to 2D Describe the optical imaging lens according to Embodiment 1 of this application. Figure 1 The structural schematic diagram of the optical imaging lens according to Embodiment 1 of this application is shown.

[0066] As Figure 1 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 sixth lens E6, and a filter E7.

[0067] The first lens E1 has a positive optical power, its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has a positive optical power, its object side surface S3 is concave, and its image side surface S4 is convex. The third lens E3 has a negative optical power, its object side surface S5 is convex, and its image side surface S6 is concave. The fourth lens E4 has a negative optical power, its object side surface S7 is concave, and its image side surface S8 is concave. The fifth lens E5 has a positive optical power, its object side surface S9 is concave, and its image side surface S10 is convex. The sixth lens E6 has a negative optical power, its object side surface S11 is convex, and its image side surface S12 is concave. The filter E7 has an object side surface S13 and an image side surface S14. The optical imaging lens has an imaging surface S15, and light from the object sequentially passes through the surfaces S1 to S14 and finally forms an image on the imaging surface S15.

[0068] Table 1 shows the basic parameter table of the optical imaging lens of Embodiment 1, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm).

[0069]

[0070]

[0071] Table 1

[0072] In Embodiment 1, the value of the total effective focal length f of the optical imaging lens is 2.90 mm, the value of the on-axis distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S15 is 4.20 mm, and the value of half of the diagonal length ImgH of the effective pixel region on the imaging surface S15 is 3.42 mm.

[0073] In Embodiment 1, the object side surface and the image side surface of any one of the first lens E1 to the sixth lens E6 are aspherical surfaces, and the surface shape x of each aspherical lens can be defined by, but not limited to, the following aspherical formula:

[0074]

[0075] 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 (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 A4, A6, A8, A 10 、A 12 、A 14 、A 16 、A 18 and A 20 .

[0076] Surface number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 1.5073E-01 -3.8137E-02 -2.0824E+00 8.3310E+00 -2.4513E-01 -1.1647E+02 4.1655E+02 -6.2289E+02 3.5383E+02 S2 -7.7836E-02 -5.2321E-02 -2.5865E+00 2.0357E+01 -1.0342E+02 3.0840E+02 -5.4756E+02 5.3501E+02 -2.1752E+02 S3 -2.9203E-02 -2.4865E-01 9.5388E-01 -1.2754E+01 7.4873E+01 -2.4282E+02 4.2697E+02 -3.6739E+02 1.1940E+02 S4 -3.8605E-01 2.9361E+00 -2.2258E+01 1.3372E+02 -6.0865E+02 2.0042E+03 -4.5989E+03 7.0861E+03 -6.9275E+03 S5 -2.2462E-01 1.7804E+00 -1.2609E+01 5.7903E+01 -1.6847E+02 2.6047E+02 3.4678E+01 -1.1154E+03 2.5835E+03 S6 3.5483E-03 -9.8662E-02 -1.0320E+00 8.3265E+00 -3.1961E+01 7.7222E+01 -1.2537E+02 1.3892E+02 -1.0375E+02 S7 1.5781E-02 3.3180E-01 -2.3157E+00 6.0553E+00 -8.5728E+00 7.3371E+00 -3.8094E+00 1.1052E+00 -1.3732E-01 S8 -7.7381E-06 3.6481E-01 -1.4118E+00 2.1117E+00 -1.6241E+00 5.9695E-01 -2.2863E-02 -4.7920E-02 9.7727E-03 S9 -2.3067E-02 4.5315E-01 -1.5057E+00 5.5691E+00 -1.6358E+01 3.1918E+01 -4.1861E+01 3.7906E+01 -2.3898E+01 S10 2.5329E-01 -1.0898E+00 3.0221E+00 -5.9847E+00 9.4039E+00 -1.1674E+01 1.0997E+01 -7.5479E+00 3.6524E+00 S11 -1.5443E-01 1.2204E-01 -1.1788E-01 1.3621E-01 -1.8804E-01 2.0283E-01 -1.4875E-01 7.4605E-02 -2.6002E-02 S12 -7.9018E-02 2.2329E-02 7.1651E-02 -1.5294E-01 1.5739E-01 -1.0283E-01 4.6004E-02 -1.4515E-02 3.2576E-03

[0077] Table 2

[0078] Figure 2A shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 1, which represents the deviation of the convergence focal 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 lateral 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.

[0079] Example 2

[0080] The following will refer to Figures 3 to 4D to describe the optical imaging lens according to Embodiment 2 of the present application. In this embodiment and the following embodiments, for the sake of simplicity, some descriptions similar to those in Embodiment 1 will be omitted. Figure 3Shows a schematic structural diagram of an optical imaging lens according to Embodiment 2 of the present application.

[0081] As Figure 3 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 sixth lens E6, and a filter E7.

[0082] 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 concave surface. The second lens E2 has a positive optical power, its object side surface S3 is a concave surface, and its image side surface S4 is a convex surface. The third lens E3 has a negative 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 positive 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 concave surface, and its image side surface S10 is a convex surface. The sixth lens E6 has a negative optical 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. The optical imaging lens has an imaging surface S15, and light from an object sequentially passes through the surfaces S1 to S14 and finally forms an image on the imaging surface S15.

[0083] In Embodiment 2, the value of the total effective focal length f of the optical imaging lens is 2.91 mm, the on-axis distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S15 is 4.20 mm, and the value of half of the diagonal length of the effective pixel region on the imaging surface S15, ImgH, is 3.39 mm.

[0084] Table 3 shows the basic parameter table of the optical imaging lens of Embodiment 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 that can be used for each aspherical mirror surface in Embodiment 2, where each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0085]

[0086] Table 3

[0087] Surface number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 1.4154E-01 8.6395E-02 -3.0532E+00 2.2156E+01 -9.7590E+01 2.6694E+02 -4.4409E+02 4.1053E+02 -1.6205E+02 S2 -8.2195E-02 -2.1436E-01 8.7438E-01 -8.0412E+00 3.7660E+01 -1.1207E+02 2.0233E+02 -2.0424E+02 8.8521E+01 S3 -1.3157E-01 -9.7364E-02 -5.3704E-01 -1.8620E+00 2.6030E+01 -1.1240E+02 2.4692E+02 -2.7588E+02 1.2459E+02 S4 4.9447E-02 -4.4991E+00 4.2905E+01 -2.5794E+02 1.0286E+03 -2.7796E+03 5.1226E+03 -6.3499E+03 5.0775E+03 S5 1.9309E-01 -3.9251E+00 3.4412E+01 -2.1021E+02 9.2603E+02 -3.0270E+03 7.4190E+03 -1.3548E+04 1.8076E+04 S6 1.6450E-01 -1.4752E+00 7.5114E+00 -2.7016E+01 6.6114E+01 -1.1053E+02 1.2641E+02 -9.7262E+01 4.7917E+01 S7 2.6653E-01 -1.5526E+00 1.5339E+00 2.8962E+00 -9.2189E+00 1.1008E+01 -7.0389E+00 2.3740E+00 -3.3144E-01 S8 2.7850E-01 -7.1215E-01 -6.7046E-01 4.4385E+00 -8.1198E+00 7.9568E+00 -4.3675E+00 1.2560E+00 -1.4711E-01 S9 -2.0310E-02 1.6069E+00 -5.1624E+00 1.3985E+01 -3.5998E+01 7.1341E+01 -9.9445E+01 9.5918E+01 -6.3613E+01 S10 1.2245E-01 -4.2877E-01 1.7676E+00 -3.8052E+00 6.3063E+00 -8.2672E+00 7.9011E+00 -5.2812E+00 2.4315E+00 S11 1.7683E-01 -6.7663E-01 1.2611E+00 -1.6251E+00 1.4989E+00 -1.0197E+00 5.2307E-01 -2.0380E-01 5.9913E-02 S12 -1.1095E-01 2.3835E-01 -4.3072E-01 5.2587E-01 -4.3990E-01 2.5777E-01 -1.0777E-01 3.2482E-02 -7.0660E-03

[0088] Table 4

[0089] Figure 4A Shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 2, which represents the deviation of the converging focal points of light rays of different wavelengths after passing through the lens. Figure 4B Shows the astigmatism curve of the optical imaging lens of Embodiment 2, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 4CThe 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 surface after the light passes through the lens. According to Figures 4A to 4D it can be known that the optical imaging lens given in Embodiment 2 can achieve good imaging quality.

[0090] Example 3

[0091] The following refers to Figures 5 to 6D the optical imaging lens according to Embodiment 3 of the present application is described. Figure 5 The structural schematic diagram of the optical imaging lens according to Embodiment 3 of the present application is shown.

[0092] As Figure 5 shown, the optical imaging lens sequentially includes, along the optical axis from the object side to the image side: a diaphragm STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and a filter E7.

[0093] 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 concave surface. The second lens E2 has a positive optical 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 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 positive 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 concave surface, and its image side surface S10 is a convex surface. The sixth lens E6 has a negative optical 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. The optical imaging lens has an imaging surface S15, and the light from the object sequentially passes through the surfaces S1 to S14 and finally forms an image on the imaging surface S15.

[0094] In Embodiment 3, the value of the total effective focal length f of the optical imaging lens is 2.94 mm, the on-axis distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S15 is 4.20 mm, and the value of half of the diagonal length of the effective pixel area on the imaging surface S15, ImgH, is 3.36 mm.

[0095] Table 5 shows the basic parameter table of the optical imaging lens of Embodiment 3, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm). Table 6 shows the high-order term coefficients that can be used for each aspherical mirror surface in Embodiment 3, where each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0096]

[0097] Table 5

[0098]

[0099]

[0100] Table 6

[0101] Figure 6A The axial chromatic aberration curve of the optical imaging lens of Embodiment 3 is shown, which represents the deviation of the convergence focal points of light rays of different wavelengths after passing through the lens. Figure 6B The astigmatism curve of the optical imaging lens of Embodiment 3 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 6C The distortion curve of the optical imaging lens of Embodiment 3 is shown, which represents the distortion magnitude values corresponding to different image heights. Figure 6D The lateral 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 the light rays pass through the lens. According to Figures 6A to 6D it can be known that the optical imaging lens given in Embodiment 3 can achieve good imaging quality.

[0102] Example 4

[0103] 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.

[0104] As Figure 7 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 sixth lens E6, and a filter E7.

[0105] The first lens E1 has a positive optical power, its object side S1 is a convex surface, and its image side S2 is a concave surface. The second lens E2 has a positive optical power, its object side S3 is a concave surface, and its image side S4 is a convex surface. The third lens E3 has a negative optical power, its object side S5 is a convex surface, and its image side S6 is a concave surface. The fourth lens E4 has a negative optical power, its object side S7 is a convex surface, and its image side S8 is a concave surface. The fifth lens E5 has a positive optical power, its object side S9 is a concave surface, and its image side S10 is a convex surface. The sixth lens E6 has a negative optical power, its object side S11 is a convex surface, and its image side S12 is a concave surface. The filter E7 has an object side S13 and an image side S14. The optical imaging lens has an imaging surface S15, and the light from the object sequentially passes through the surfaces S1 to S14 and finally forms an image on the imaging surface S15.

[0106] In Embodiment 4, the value of the total effective focal length f of the optical imaging lens is 3.04 mm, the value of the on-axis distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S15 is 4.33 mm, and the value of half of the diagonal length ImgH of the effective pixel region on the imaging surface S15 is 3.43 mm.

[0107] 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 of the aspherical mirror surfaces that can be used in Embodiment 4, where each aspherical surface type can be defined by formula (1) given in Embodiment 1 above.

[0108]

[0109]

[0110] Table 7

[0111] Surface number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 1.3411E-01 1.0114E-01 -2.6073E+00 1.6693E+01 -6.4327E+01 1.5245E+02 -2.1827E+02 1.7291E+02 -5.8489E+01 S2 -7.1964E-02 -2.1045E-01 8.6883E-01 -7.0835E+00 3.0887E+01 -8.5708E+01 1.4274E+02 -1.3086E+02 5.0870E+01 S3 -1.3797E-01 -5.8343E-02 -1.3899E+00 9.7887E+00 -5.2267E+01 1.8898E+02 -4.4625E+02 6.5823E+02 -5.4576E+02 S4 4.8426E-02 -3.9412E+00 3.1448E+01 -1.6349E+02 5.8027E+02 -1.4247E+03 2.4268E+03 -2.8263E+03 2.1609E+03 S5 2.0626E-01 -3.2958E+00 2.3606E+01 -1.2472E+02 4.9863E+02 -1.5375E+03 3.6564E+03 -6.5916E+03 8.7553E+03 S6 1.3895E-01 -7.5586E-01 1.8906E+00 -1.4884E+00 -9.3042E+00 4.1087E+01 -8.5141E+01 1.0791E+02 -8.7848E+01 S7 7.3888E-02 -5.8826E-01 -4.7178E-01 4.7881E+00 -9.0417E+00 8.0739E+00 -3.0307E+00 -4.9118E-01 8.6344E-01 S8 8.6958E-02 3.4302E-01 -4.1325E+00 1.4135E+01 -2.9159E+01 4.0286E+01 -3.7969E+01 2.4015E+01 -9.6957E+00 S9 -2.5215E-01 2.3480E+00 -7.6565E+00 1.8798E+01 -3.6742E+01 5.5126E+01 -6.2483E+01 5.3048E+01 -3.3196E+01 S10 6.5601E-01 -1.2522E+00 4.4247E+00 -1.4255E+01 3.4248E+01 -5.7154E+01 6.6137E+01 -5.3865E+01 3.1147E+01 S11 1.8002E-01 -3.6371E-01 4.8549E-02 7.4001E-01 -1.3502E+00 1.2843E+00 -7.8314E-01 3.2693E-01 -9.5673E-02 S12 -1.0422E-01 2.5874E-01 -5.1484E-01 6.4862E-01 -5.3796E-01 3.0626E-01 -1.2323E-01 3.5616E-02 -7.4215E-03

[0112] Table 8

[0113] Figure 8A Shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 4, which represents the deviation of the convergence focal 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 8D Shows the lateral chromatic aberration curve of the optical imaging lens of Embodiment 4, which represents the deviation of different image heights on the imaging surface after the light rays pass through the lens. According to Figures 8A to 8D It can be seen that the optical imaging lens given in Embodiment 4 can achieve good imaging quality.

[0114] Example 5

[0115] The following refers to Figures 9 to 10D Describes the optical imaging lens according to Embodiment 5 of the present application. Figure 9 Shows a schematic structural diagram of the optical imaging lens according to Embodiment 5 of the present application.

[0116] 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 sixth lens E6, and a filter E7.

[0117] The first lens E1 has a positive optical power, with its object side S1 being convex and its image side S2 being concave. The second lens E2 has a positive optical power, with its object side S3 being concave and its image side S4 being convex. The third lens E3 has a negative optical power, with its object side S5 being convex and its image side S6 being concave. The fourth lens E4 has a negative optical power, with its object side S7 being convex and its image side S8 being concave. The fifth lens E5 has a positive optical power, with its object side S9 being concave and its image side S10 being convex. The sixth lens E6 has a negative optical power, with its object side S11 being convex and its image side S12 being concave. The filter E7 has an object side S13 and an image side S14. The optical imaging lens has an imaging surface S15, and light from an object sequentially passes through the surfaces S1 to S14 and finally forms an image on the imaging surface S15.

[0118] In Embodiment 5, the value of the total effective focal length f of the optical imaging lens is 3.01 mm, the on-axis distance TTL from the object side S1 of the first lens E1 to the imaging surface S15 is 4.35 mm, and the value of half of the diagonal length of the effective pixel region on the imaging surface S15, ImgH, is 3.42 mm.

[0119] Table 9 shows the basic parameter table of the optical imaging lens of Embodiment 5, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm). Table 10 shows the high-order term coefficients of the aspherical mirror surfaces that can be used in Embodiment 5, and each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0120]

[0121] Table 9

[0122] Surface number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 1.3167E-01 4.1716E-01 -1.0148E+01 1.2147E+02 -9.5569E+02 5.0764E+03 -1.8429E+04 4.5657E+04 -7.5764E+04 S2 -6.3031E-02 -8.7852E-02 -1.2421E+00 1.8753E+01 -1.6935E+02 9.2088E+02 -3.2143E+03 7.3416E+03 -1.0872E+04 S3 -9.1430E-02 -5.5920E-01 5.3711E+00 -4.6432E+01 2.5028E+02 -8.5738E+02 1.8620E+03 -2.4696E+03 1.8171E+03 S4 5.0472E-01 -8.9969E+00 6.8157E+01 -3.4592E+02 1.2091E+03 -2.9194E+03 4.8383E+03 -5.3776E+03 3.8169E+03 S5 6.0841E-01 -7.7586E+00 5.5775E+01 -2.9678E+02 1.1956E+03 -3.6943E+03 8.7554E+03 -1.5712E+04 2.0838E+04 S6 2.2820E-01 -1.3333E+00 3.7505E+00 -4.3297E+00 -1.2716E+01 7.0699E+01 -1.6147E+02 2.2121E+02 -1.9331E+02 S7 -9.7007E-02 -2.1190E-01 -2.4301E+00 1.4965E+01 -3.9725E+01 6.4015E+01 -6.7410E+01 4.6763E+01 -2.0666E+01 S8 1.5434E-01 -4.0930E-01 -1.5406E+00 8.2967E+00 -1.9366E+01 2.7984E+01 -2.7049E+01 1.7675E+01 -7.4878E+00 S9 5.5869E-02 7.4066E-01 -2.3664E+00 3.8751E+00 -4.0479E+00 2.6432E+00 -1.0205E+00 2.1155E-01 -1.8158E-02 S10 4.1022E-01 -6.8958E-01 2.2853E+00 -6.5570E+00 1.3277E+01 -1.8154E+01 1.6801E+01 -1.0578E+01 4.4635E+00 S11 5.1996E-03 5.3050E-02 -4.5186E-01 9.4671E-01 -1.1057E+00 8.2827E-01 -4.1809E-01 1.4408E-01 -3.3301E-02 S12 -9.1390E-02 1.4702E-01 -2.4976E-01 2.9267E-01 -2.3267E-01 1.2890E-01 -5.0960E-02 1.4573E-02 -3.0212E-03

[0123] Table 10

[0124] Figure 10A shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 5, which represents the deviation of the converging focal points of light rays of different wavelengths after passing through the lens. Figure 10B shows the astigmatism curve of the optical imaging lens of Embodiment 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 Embodiment 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 Embodiment 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 Embodiment 5 can achieve good imaging quality.

[0125] Example 6

[0126] The following is a reference to Figures 11 to 12D an optical imaging lens according to Embodiment 6 of the present application. Figure 11 A schematic structural diagram of the optical imaging lens according to Embodiment 6 of the present application is shown.

[0127] As Figure 11 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 sixth lens E6, and a filter E7.

[0128] 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 concave surface. The second lens E2 has a positive optical power, its object side surface S3 is a concave surface, and its image side surface S4 is a convex surface. The third lens E3 has a negative 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 concave surface, and its image side surface S8 is a convex surface. The fifth lens E5 has a positive optical power, its object side surface S9 is a concave surface, and its image side surface S10 is a convex surface. The sixth lens E6 has a negative optical 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. The optical imaging lens has an imaging surface S15, and light from an object sequentially passes through the surfaces S1 to S14 and finally forms an image on the imaging surface S15.

[0129] In Embodiment 6, the value of the total effective focal length f of the optical imaging lens is 2.85 mm, the on-axis distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S15 is 4.38 mm, and the value of half of the diagonal length of the effective pixel region on the imaging surface S15, ImgH, is 3.40 mm.

[0130] Table 11 shows the basic parameter table of the optical imaging lens of Embodiment 6, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm). Table 12 shows the high-order term coefficients that can be used for each aspherical mirror surface in Embodiment 6, where each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0131]

[0132] Table 11

[0133]

[0134]

[0135] Table 12

[0136] Figure 12AThe axial chromatic aberration curve of the optical imaging lens of Embodiment 6 is shown, which represents the deviation of the converging focal points of light rays of different wavelengths after passing through the lens. Figure 12B The astigmatism curve of the optical imaging lens of Embodiment 6 is shown, which represents the curvature of the meridional image plane and the curvature of the sagittal image plane. Figure 12C The distortion curve of the optical imaging lens of Embodiment 6 is shown, which represents the distortion magnitude values corresponding to different image heights. Figure 12D The lateral chromatic aberration curve of the optical imaging lens of Embodiment 6 is shown, which represents the deviation of different image heights on the imaging plane after the light rays pass through the lens. According to Figures 12A to 12D it can be known that the optical imaging lens given in Embodiment 6 can achieve good imaging quality.

[0137] In summary, Embodiments 1 to 6 respectively satisfy the relationships shown in Table 13.

[0138] Conditional / Example 1 2 3 4 5 6 TTL / ImgH 1.23 1.24 1.25 1.26 1.27 1.29 TTL / tan(FOV / 2)(mm) 3.48 3.72 3.79 3.95 3.93 3.76 f / (R5 + R6) 0.83 0.61 0.53 0.51 0.47 0.39 f5 / (R10 - R9) 0.81 2.76 2.63 2.07 1.25 1.79 f1 / f2 1.37 0.98 1.00 0.95 0.88 1.10 f6 / CT6 -3.15 -2.75 -2.63 -2.58 -3.03 -4.41 FOV(°) 100.74 96.96 95.90 95.28 95.77 98.65 T34 / CT3 1.27 1.00 0.91 0.94 1.08 1.00 T56 / CT6×10 1.16 0.42 0.42 0.41 0.43 0.57 DT62 / (DT31 + DT32) 1.28 1.33 1.34 1.34 1.35 1.31 f12 / f45 2.04 1.75 1.79 1.82 1.55 1.67 (SAG31 + SAG32) / f×10 1.01 0.81 0.66 0.60 0.54 0.51

[0139] Table 13

[0140] The present application further provides an imaging device, which is provided with an electronic photosensitive element for imaging. The 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.

[0141] 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 protection scope involved in the present application is not limited to the technical solution formed by the specific combination of the above technical features, but also covers other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the present application. For example, the technical solutions formed by mutually replacing the above features with the technical features (but not limited to) disclosed in the present application that have similar functions.

Claims

1. An optical imaging lens, characterized in that, It sequentially includes from the object side to the image side along the optical axis: A first lens with positive optical power, whose object side is convex and image side is concave; A second lens with positive optical power, whose image side is convex; A third lens with negative optical power, whose object side is convex and image side is concave; A fourth lens; A fifth lens with positive optical power, whose object side is concave and image side is convex; A sixth lens with negative optical power, whose object side is convex and image side is concave; Among them, the number of lenses with optical power in the optical imaging lens is six; The on-axis distance TTL from the object side of the first lens to the imaging surface of the optical imaging lens and half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens satisfy: 1.2 < TTL / ImgH < 1.3; The total effective focal length f of the optical imaging lens, the curvature radius R5 of the object side of the third lens, and the curvature radius R6 of the image side of the third lens satisfy: 0.35 < f / (R5 + R6) < 0.85; The effective focal length f5 of the fifth lens, the curvature radius R10 of the image side of the fifth lens, and the curvature radius R9 of the object side of the fifth lens satisfy: 0.8 < f5 / (R10 - R9) < 2.8; The combined focal length f12 of the first lens and the second lens and the combined focal length f45 of the fourth lens and the fifth lens satisfy: 1.52 < f12 / f45 ≤ 2.

04.

2. The optical imaging lens according to claim 1, wherein The on-axis distance TTL from the object side of the first lens to the imaging surface of the optical imaging lens and the maximum field of view angle FOV of the optical imaging lens satisfy: 3.48mm ≤ TTL / tan(FOV / 2) ≤ 3.95mm.

3. The optical imaging lens according to claim 1, characterized in that, The effective focal length f1 of the first lens and the effective focal length f2 of the second lens satisfy: 0.86 < f1 / f2 < 1.

4.

4. The optical imaging lens according to claim 1, characterized in that, The effective focal length f6 of the sixth lens and the central thickness CT6 of the sixth lens on the optical axis satisfy: -4.43 < f6 / CT6 < -2.

55.

5. The optical imaging lens according to claim 1, wherein The maximum field of view angle FOV of the optical imaging lens satisfy: 95.28° ≤ FOV ≤ 100.74°.

6. The optical imaging lens according to claim 1, wherein The interval distance T34 between the third lens and the fourth lens on the optical axis and the central thickness CT3 of the third lens on the optical axis satisfy: 0.90 < T34 / CT3 < 1.

3.

7. The optical imaging lens according to claim 1, wherein The interval distance T56 between the fifth lens and the sixth lens on the optical axis and the central thickness CT6 of the sixth lens on the optical axis satisfy: 0.4 < T56 / CT6 × 10 < 1.

2.

8. The optical imaging lens according to claim 1, characterized in that, The effective semi-aperture DT62 of the image side of the sixth lens, the effective semi-aperture DT31 of the object side of the third lens, and the effective semi-aperture DT32 of the image side of the third lens satisfy: 1.25 < DT62 / (DT31 + DT32) < 1.

36.

9. The optical imaging lens according to any one of claims 1 to 8, characterized in that, The axial distance SAG31 between the intersection of the object side surface of the third lens and the optical axis and the vertex of the effective radius of the object side surface of the third lens, the axial distance SAG32 between the intersection of the image side surface of the third lens and the optical axis and the vertex of the effective radius of the image side surface of the third lens, and the total effective focal length f of the optical imaging lens satisfy: 0.5 < (SAG31 + SAG32) / f × 10 < 1.02.

Images