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; a fourth lens with an optical power, whose object side is convex and image side is concave; a fifth lens with an optical power, whose object side is concave; a sixth lens; and a seventh lens; wherein, half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens satisfies ImgH≥5.20mm.

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 upgrading of consumer electronic products and the development of image software functions and video software functions on consumer electronic products. Camera modules are usually provided on portable devices such as mobile phones and tablet computers so that the portable devices have camera functions. An image sensor of the Charge-coupled Device (CCD) type or an image sensor of the Complementary Metal Oxide Semiconductor (CMOS) type is usually provided in the camera module, and an optical imaging lens is provided. The optical imaging lens can converge the light on the object side, and the imaging light travels along the optical path of the optical imaging lens and irradiates onto the image sensor. Then, the image sensor converts the optical signal into an electrical signal to form image data.

[0003] The trend towards thinner and lighter portable devices is getting stronger, and with the improvement of the performance and reduction of the size of CCD and CMOS components, especially the popularization of large-size and high-pixel CMOS chips, higher requirements are also put forward for the high imaging quality and miniaturization of the matching imaging lens.

[0004] In order to meet the miniaturization requirements and imaging requirements, an optical imaging lens with characteristics such as a large image plane and a large wide angle is needed on the basis of taking into account the miniaturization characteristics. Summary of the Invention

[0005] This application provides an optical imaging lens applicable to portable electronic products, which can at least solve or partially solve the above at least one disadvantage in the prior art.

[0006] In a first aspect of this application, an optical imaging lens is provided, 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; a fourth lens with a focal power, whose object side is convex and image side is concave; a fifth lens with a focal power, whose object side is concave; a sixth lens; and a seventh lens; wherein, half of the diagonal length ImgH of the effective pixel area on the imaging plane of the optical imaging lens can satisfy ImgH≥5.20mm.

[0007] In one embodiment, at least one aspherical mirror surface exists among the object side surface of the first lens to the image side surface of the seventh lens.

[0008] In one embodiment, the total effective focal length f of the optical imaging lens and half of the maximum field of view Semi-FOV of the optical imaging lens satisfy 5 mm < f × tan(Semi-FOV) < 7 mm.

[0009] In one embodiment, the maximum field of view FOV of the optical imaging lens satisfies 110° < FOV < 130°.

[0010] In one embodiment, the distance TTL from the object side surface of the first lens to the imaging surface on the optical axis and half of the diagonal length ImgH of the effective pixel region on the imaging surface satisfy TTL / ImgH < 1.55.

[0011] In one embodiment, the effective focal length f7 of the seventh lens and the radius of curvature R13 of the object side surface of the seventh lens satisfy |f7 / R13| < 1.7.

[0012] In one embodiment, the radius of curvature R7 of the object side surface of the fourth lens and the radius of curvature R8 of the image side surface of the fourth lens satisfy 1.5 < (R7 + R8) / R8 < 4.1.

[0013] In one embodiment, the total effective focal length f of the optical imaging lens, the effective focal length f6 of the sixth lens, and the effective focal length f7 of the seventh lens satisfy 2.0 < |f / f6| + |f / f7| < 3.5.

[0014] In one embodiment, the central thickness CT1 of the first lens on the optical axis, the central thickness CT2 of the second lens on the optical axis, the central thickness CT3 of the third lens on the optical axis, and the spacing distance T23 between the second lens and the third lens on the optical axis satisfy 4.5 < (CT1 + CT2 + CT3) / T23 < 7.5.

[0015] In one embodiment, the radius of curvature R7 of the object side surface of the fourth lens and the total effective focal length f of the optical imaging lens satisfy 0.5 < R7 / f < 3.5.

[0016] In one embodiment, the axial distance SAG11 between the intersection of the object side surface of the first lens and the optical axis and the vertex of the effective radius of the object side surface of the first lens and the axial distance SAG71 between the intersection of the object side surface of the seventh lens and the optical axis and the vertex of the effective radius of the object side surface of the seventh lens satisfy -2 < SAG11 / SAG71 < 0.

[0017] In one embodiment, the edge thickness ET3 of the third lens and 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 satisfy -1.0 < ET3 / SAG32 < -0.5.

[0018] In one embodiment, the combined focal length f234 of the second lens, the third lens, and the fourth lens and the total effective focal length f of the optical imaging lens may satisfy 1.0 < f234 / f < 2.0.

[0019] In one embodiment, the edge thickness ET7 of the seventh lens may satisfy 1.0 mm < ET7 < 1.5 mm.

[0020] In one embodiment, the optical imaging lens further includes a diaphragm, and the diaphragm is disposed between the second lens and the third lens.

[0021] In one embodiment, the object side surface of the seventh lens may be convex, and the image side surface of the seventh lens may be concave.

[0022] The second aspect of 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 having a negative optical power; a second lens having an optical power; a third lens; a fourth lens having an optical power, the object side surface of which is convex and the image side surface of which is concave; a fifth lens having an optical power; a sixth lens; and a seventh lens; wherein, the total effective focal length f of the optical imaging lens and half of the maximum field of view angle Semi-FOV of the optical imaging lens may satisfy 5 mm < f × tan(Semi-FOV) < 7 mm.

[0023] In one embodiment, the maximum field of view angle FOV of the optical imaging lens may satisfy 110° < FOV < 130°.

[0024] In one embodiment, half of the diagonal length ImgH of the effective pixel region on the imaging surface of the optical imaging lens may satisfy ImgH ≥ 5.20 mm.

[0025] In one embodiment, the distance TTL from the object side surface of the first lens to the imaging surface on the optical axis and half of the diagonal length ImgH of the effective pixel region on the imaging surface may satisfy TTL / ImgH < 1.55.

[0026] In one embodiment, the effective focal length f7 of the seventh lens and the radius of curvature R13 of the object side surface of the seventh lens may satisfy |f7 / R13| < 1.7.

[0027] In one embodiment, the radius of curvature R7 of the object side surface of the fourth lens and the radius of curvature R8 of the image side surface of the fourth lens may satisfy 1.5 < (R7 + R8) / R8 < 4.1.

[0028] In one embodiment, the total effective focal length f of the optical imaging lens, the effective focal length f6 of the sixth lens, and the effective focal length f7 of the seventh lens may satisfy 2.0 < |f / f6| + |f / f7| < 3.5.

[0029] In one embodiment, the central thickness CT1 of the first lens on the optical axis, the central thickness CT2 of the second lens on the optical axis, the central thickness CT3 of the third lens on the optical axis, and the axial spacing distance T23 between the second lens and the third lens on the optical axis may satisfy 4.5 < (CT1 + CT2 + CT3) / T23 < 7.5.

[0030] In one embodiment, the radius of curvature R7 of the object side surface of the fourth lens and the total effective focal length f of the optical imaging lens may satisfy 0.5 < R7 / f < 3.5.

[0031] In one embodiment, the axial distance SAG11 between the intersection of the object side surface of the first lens and the optical axis and the vertex of the effective radius of the object side surface of the first lens and the axial distance SAG71 between the intersection of the object side surface of the seventh lens and the optical axis and the vertex of the effective radius of the object side surface of the seventh lens may satisfy -2 < SAG11 / SAG71 < 0.

[0032] In one embodiment, the edge thickness ET3 of the third lens and 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 may satisfy -1.0 < ET3 / SAG32 < -0.5.

[0033] In one embodiment, the combined focal length f234 of the second lens, the third lens, and the fourth lens and the total effective focal length f of the optical imaging lens may satisfy 1.0 < f234 / f < 2.0.

[0034] In one embodiment, the edge thickness ET7 of the seventh lens may satisfy 1.0 mm < ET7 < 1.5 mm.

[0035] In one embodiment, the optical imaging lens further includes a diaphragm, and the diaphragm is disposed between the second lens and the third lens.

[0036] In one embodiment, the object side surface of the fifth lens may be concave.

[0037] In one embodiment, the object side surface of the seventh lens may be convex, and the image side surface of the seventh lens may be concave.

[0038] This application uses seven lenses. By reasonably distributing the optical power, surface type, central thickness of each lens, and axial spacing between each lens, etc., the above optical imaging lens has at least one beneficial effect such as a large image plane, a large wide angle, miniaturization, and good imaging quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In conjunction with the drawings, through the following detailed description of non-limiting embodiments, other features, objects, and advantages of the present application will become more apparent. In the drawings:

[0040] Figure 1 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 1 of the present application; Figures 2A to 2C Respectively show the axial chromatic aberration curve, astigmatism curve, and lateral chromatic aberration curve of the optical imaging lens of Embodiment 1;

[0041] Figure 3 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 2 of the present application; Figures 4A to 4C Respectively show the axial chromatic aberration curve, astigmatism curve, and lateral chromatic aberration curve of the optical imaging lens of Embodiment 2;

[0042] Figure 5 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 3 of the present application; Figures 6A to 6C Respectively show the axial chromatic aberration curve, astigmatism curve, and lateral chromatic aberration curve of the optical imaging lens of Embodiment 3;

[0043] Figure 7 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 4 of the present application; Figures 8A to 8C Respectively show the axial chromatic aberration curve, astigmatism curve, and lateral chromatic aberration curve of the optical imaging lens of Embodiment 4;

[0044] Figure 9 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 5 of the present application; Figures 10A to 10C Respectively show the axial chromatic aberration curve, astigmatism curve, and lateral chromatic aberration curve of the optical imaging lens of Embodiment 5;

[0045] Figure 11 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 6 of the present application; Figures 12A to 12C Respectively show the axial chromatic aberration curve, astigmatism curve, and lateral chromatic aberration curve of the optical imaging lens of Embodiment 6;

[0046] Figure 13 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 7 of the present application; Figures 14A to 14C Respectively show the axial chromatic aberration curve, astigmatism curve, and lateral chromatic aberration curve of the optical imaging lens of Embodiment 7;

[0047] Figure 15 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 8 of the present application; Figures 16A to 16C Respectively show the axial chromatic aberration curve, astigmatism curve, and lateral chromatic aberration curve of the optical imaging lens of Embodiment 8. Detailed implementation manners

[0048] To better understand the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of exemplary embodiments of the present application and do not limit the scope of the present application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0049] It should be noted that in this specification, the expressions such as first, second, third, etc. are only used to distinguish one feature from another feature and do not represent any limitation on the features. Therefore, without departing from the teachings of the present application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0050] In the drawings, for the sake of clarity, the thickness, dimensions and shape of the lenses 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 for illustrative purposes only and are not drawn to an exact scale.

[0051] 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.

[0052] 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 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.

[0053] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It should also be understood that terms (such as those defined in a common dictionary) should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0054] 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 combination with the embodiments.

[0055] The features, principles and other aspects of the present application will be described in detail below.

[0056] The optical imaging lens according to an exemplary embodiment of the present application may include, for example, seven lenses having optical powers, namely, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens. These seven lenses are arranged in sequence 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 seventh lens.

[0057] In the exemplary embodiment, the first lens has a negative optical power; the second lens may have a positive optical power or a negative optical power; the fourth lens may have a positive optical power or a negative optical power, its object side surface may be convex, and its image side surface may be concave; the fifth lens may have a positive optical power or a negative optical power. Exemplarily, the third lens may have a positive optical power or a negative optical power. Exemplarily, the sixth lens may have a positive optical power or a negative optical power. Exemplarily, the seventh lens may have a positive optical power or a negative optical power. By reasonably controlling the positive and negative distribution of the optical powers of the respective components of the lens and the curvature of the lens surface types, the aberrations of the optical imaging lens can be effectively balanced, so that the optical imaging lens has a good imaging function.

[0058] In the exemplary embodiment, the object side surface of the fifth lens may be concave.

[0059] In the exemplary embodiment, the object side surface of the seventh lens may be convex, and the image side surface of the seventh lens may be concave.

[0060] In the exemplary embodiment, the above optical imaging lens may further include at least one aperture stop. The aperture stop may be disposed at an appropriate position as needed, for example, disposed between the second lens and the third lens. Optionally, the above optical imaging lens may further include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging surface.

[0061] In the exemplary embodiment, the optical imaging lens of the present application may satisfy the condition ImgH≥5.20mm, where ImgH is half of the diagonal length of the effective pixel region on the imaging surface of the optical imaging lens. By controlling the image height, the optical imaging lens can have the characteristics of high pixels and can effectively improve the resolution of the optical imaging lens. More specifically, ImgH may satisfy 5.20mm≤ImgH≤5.40mm.

[0062] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 5mm < f × tan(Semi-FOV) < 7mm, where f is the total effective focal length of the optical imaging lens, and Semi-FOV is half of the maximum field of view angle of the optical imaging lens. By controlling this conditional formula, the optical power of each lens can be reasonably distributed, and the optical imaging lens can have a larger image plane, thereby improving the resolution of the imaging lens. More specifically, f and Semi-FOV can satisfy 5.60mm < f × tan(Semi-FOV) < 6.20mm.

[0063] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 110° < FOV < 130°, where FOV is the maximum field of view angle of the optical imaging lens. By controlling this conditional formula, it is beneficial for the optical imaging lens to have a larger field of view angle, and thus beneficial for increasing the imaging range of the optical imaging lens. More specifically, FOV can satisfy 115° < FOV < 125°.

[0064] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula TTL / ImgH < 1.55, where TTL is the distance on the optical axis from the object side surface of the first lens to the imaging surface, and ImgH is half of the diagonal length of the effective pixel region on the imaging surface. By controlling the ratio of the total optical length to the image height of the optical imaging lens, it is beneficial for the optical imaging lens to have a compact structure and beneficial for maintaining the miniaturization of the optical imaging lens. This optical imaging lens can have a better market prospect. More specifically, TTL and ImgH can satisfy 1.40 < TTL / ImgH < 1.54.

[0065] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula |f7 / R13| < 1.7, where f7 is the effective focal length of the seventh lens, and R13 is the curvature radius of the object side surface of the seventh lens. By controlling the absolute value of the ratio of the effective focal length of the seventh lens to its curvature radius, the shape of the seventh lens can be effectively controlled, and thus the deflection of the incident light of the optical imaging lens at the seventh lens can be effectively controlled, and the seventh lens can obtain better processability, thereby enabling the optical imaging lens to have better aberration correction ability. More specifically, f7 and R13 can satisfy 0.8 < |f7 / R13| < 1.7.

[0066] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 1.5 < (R7 + R8) / R8 < 4.1, where R7 is the radius of curvature of the object side surface of the fourth lens, and R8 is the radius of curvature of the image side surface of the fourth lens. By controlling this conditional formula, the shape of the fourth lens can be effectively controlled, and further the refraction angle of the incident light of the optical imaging lens on the fourth lens can be controlled, and the optical imaging lens has good processability, and it is also beneficial to better match the optical imaging lens with the chip. More specifically, R7 and R8 satisfy 1.90 < (R7 + R8) / R8 < 4.05.

[0067] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 2.0 < |f / f6| + |f / f7| < 3.5, where f is the total effective focal length of the optical imaging lens, f6 is the effective focal length of the sixth lens, and f7 is the effective focal length of the seventh lens. By controlling this conditional formula, it is beneficial to constrain the effective focal lengths of the sixth lens and the seventh lens, and the optical power matching of the adjacent sixth lens and seventh lens can effectively reduce the astigmatism and field curvature generated by the lenses in the image side direction of the two, and further improve the imaging quality of the optical imaging system. More specifically, f, f6, and f7 satisfy 2.0 < |f / f6| + |f / f7| < 3.2.

[0068] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 4.5 < (CT1 + CT2 + CT3) / T23 < 7.5, where CT1 is the central thickness of the first lens on the optical axis, CT2 is the central thickness of the second lens on the optical axis, CT3 is the central thickness of the third lens on the optical axis, and T23 is the air gap between the second lens and the third lens on the optical axis. By controlling this conditional formula, the central thicknesses of the first three lenses and the air gap between the second lens and the third lens can be effectively controlled, and the contribution of the first three lenses to the field curvature of the optical imaging lens can be reduced, so that the optical imaging lens has better image quality. More specifically, CT1, CT2, CT3, and T23 satisfy 4.80 < (CT1 + CT2 + CT3) / T23 < 7.40.

[0069] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 0.5 < R7 / f < 3.5, where R7 is the radius of curvature of the object side surface of the fourth lens, and f is the total effective focal length of the optical imaging lens. By controlling the ratio of the radius of curvature of the object side surface of the fourth lens to the total effective focal length within a certain range, the contribution of the fourth lens to the spherical aberration of the lens can be controlled, and further the lens has smaller spherical aberration, and further the imaging ability of the lens is improved. More specifically, R7 and f satisfy 0.90 < R7 / f < 3.49.

[0070] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula -2 < SAG11 / SAG71 < 0, where SAG11 is the axial distance between the intersection of the object side surface of the first lens and the optical axis and the vertex of the effective radius of the object side surface of the first lens, and SAG71 is the axial distance between the intersection of the object side surface of the seventh lens and the optical axis and the vertex of the effective radius of the object side surface of the seventh lens. By controlling the ratio of the sagittal height of the object side surface of the first lens to the sagittal height of the object side surface of the seventh lens, the shapes of the first lens and the seventh lens can be effectively controlled, the processability of these two lenses can be improved, and the light path of the marginal field of view can be effectively controlled, enabling the optical imaging lens to better match the chip. More specifically, SAG11 and SAG71 can satisfy -1.50 < SAG11 / SAG71 < -0.90.

[0071] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula -1.0 < ET3 / SAG32 < -0.5, where ET3 is the edge thickness of the third lens, and 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. By controlling the ratio of the edge thickness of the third lens to the sagittal height of its image side surface, the shape of the third lens can be effectively controlled. More specifically, ET3 and SAG32 can satisfy -0.98 < ET3 / SAG32 < -0.70.

[0072] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 1.0 < f234 / f < 2.0, where f234 is the combined focal length of the second lens, the third lens, and the fourth lens, and f is the total effective focal length of the optical imaging lens. By controlling this conditional formula, the spherical aberration contribution of the second lens, the third lens, and the fourth lens can be effectively controlled, enabling the axial field of view of the optical imaging lens to obtain good imaging quality. More specifically, f234 and f can satisfy 1.20 < f234 / f < 1.80.

[0073] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 1.0 mm < ET7 < 1.5 mm, where ET7 is the edge thickness of the seventh lens. By controlling this conditional formula, the shape of the seventh lens can be effectively controlled, ensuring its processability, which is beneficial for its molding and assembly, and further improving the imaging ability of the optical imaging system. More specifically, ET7 can satisfy 1.03 mm < ET7 < 1.30 mm.

[0074] The optical imaging lens according to the above-described embodiments of the present application may employ multiple lenses, such as the seven lenses described above. By reasonably allocating the optical power, surface shape, central thickness of each lens, and the on-axis spacing between each lens, etc., the volume of the imaging lens can be effectively reduced, the sensitivity of the imaging lens can be lowered, and the processability of the imaging lens can be improved, making the optical imaging lens more conducive to production and processing and applicable to portable electronic products. At the same time, the optical imaging lens of the present application also has excellent optical properties such as a large image plane, a large wide angle, a high pixel count, a high resolution, or a high imaging quality.

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

[0076] However, those skilled in the art should understand that without departing from the technical solutions claimed in the present application, the number of lenses constituting the optical imaging lens can be changed to obtain the various results and advantages described in this specification. For example, although seven lenses are described as an example in the embodiment, the optical imaging lens is not limited to including seven lenses. If necessary, the optical imaging lens may also include other numbers of lenses.

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

[0078] Example 1

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

[0080] As Figure 1As shown, the optical imaging lens sequentially includes, from the object side to the image side along the optical axis: a first lens E1, a second lens E2, a diaphragm STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and a filter E8.

[0081] The first lens E1 has a negative focal power, its object side S1 is concave, and its image side S2 is concave. The second lens E2 has a positive focal power, its object side S3 is convex, and its image side S4 is concave. The third lens E3 has a positive focal power, its object side S5 is convex, and its image side S6 is convex. The fourth lens E4 has a negative focal power, its object side S7 is convex, and its image side S8 is concave. The fifth lens E5 has a negative focal power, its object side S9 is concave, and its image side S10 is concave. The sixth lens E6 has a positive focal power, its object side S11 is convex, and its image side S12 is convex. The seventh lens E7 has a negative focal power, its object side S13 is convex, and its image side S14 is concave. The filter E8 has an object side S15 and an image side S16. The optical imaging lens has an imaging surface S17, and light from an object sequentially passes through the surfaces S1 to S16 and finally forms an image on the imaging surface S17.

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

[0083]

[0084] Table 1

[0085] In Example 1, the value of the total effective focal length f of the optical imaging lens is 3.36 mm, the value of the f-number Fno of the optical imaging lens is 2.27, the on-axis distance TTL from the object side S1 of the first lens E1 to the imaging surface S17 is 7.89 mm, the value of half of the diagonal length of the effective pixel region on the imaging surface S17, ImgH, is 5.35 mm, and the value of half of the maximum field of view, Semi-FOV, is 61.42°.

[0086] In Example 1, the object side and the image side of any one of the first lens E1 to the seventh lens E7 are both aspherical surfaces, and the surface profile x of each aspherical lens can be defined by, but not limited to, the following aspherical formula:

[0087]

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

[0089]

[0090]

[0091] Table 2

[0092] Figure 2A shows the axial chromatic aberration curve of the optical imaging lens of Example 1, which represents the deviation of the converging 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 Example 1, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 2C shows the longitudinal chromatic aberration curve of the optical imaging lens of Example 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 2C it can be seen that the optical imaging lens given in Example 1 can achieve good imaging quality.

[0093] Example 2

[0094] The following will refer to Figures 3 to 4C 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 brevity, 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.

[0095] As Figure 3 shown, the optical imaging lens sequentially includes, from the object side to the image side along the optical axis: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and a filter E8.

[0096] The first lens E1 has a negative optical power, its object side S1 is concave, and its image side S2 is concave. The second lens E2 has a negative optical power, its object side S3 is convex, and its image side S4 is concave. The third lens E3 has a positive optical power, its object side S5 is convex, and its image side S6 is convex. The fourth lens E4 has a negative optical power, its object side S7 is convex, and its image side S8 is concave. The fifth lens E5 has a negative optical power, its object side S9 is concave, and its image side S10 is concave. The sixth lens E6 has a positive optical power, its object side S11 is convex, and its image side S12 is convex. The seventh lens E7 has a negative optical power, its object side S13 is convex, and its image side S14 is concave. The filter E8 has an object side S15 and an image side S16. The optical imaging lens has an imaging surface S17, and light from an object sequentially passes through the surfaces S1 to S16 and finally forms an image on the imaging surface S17.

[0097] In Embodiment 2, the value of the total effective focal length f of the optical imaging lens is 3.36 mm, the value of the f-number Fno of the optical imaging lens is 2.27, the on-axis distance TTL from the object side S1 of the first lens E1 to the imaging surface S17 is 7.79 mm, the value of half of the diagonal length of the effective pixel region on the imaging surface S17, ImgH, is 5.35 mm, and the value of half of the maximum field of view, Semi-FOV, is 61.14°.

[0098] 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 the above Embodiment 1.

[0099]

[0100]

[0101] Table 3

[0102] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 9.0884E-02 -4.1240E-02 1.9418E-02 -7.0077E-03 1.6270E-03 -2.1107E-04 8.9365E-06 9.9243E-07 -9.9011E-08 S2 1.3097E-01 -8.6771E-02 6.6846E-02 -4.5656E-02 2.0058E-02 -5.4370E-03 8.9507E-04 -8.2909E-05 3.3322E-06 S3 2.7927E-02 -1.4556E-01 2.7262E-01 -5.3682E-01 7.1816E-01 -5.9036E-01 2.9431E-01 -8.2112E-02 9.8259E-03 S4 2.5777E-02 -3.8371E-02 -4.3207E-02 -1.2382E-01 1.6470E+00 -4.8631E+00 7.0859E+00 -5.2372E+00 1.5855E+00 S5 -1.0233E-02 5.5022E-02 -7.2259E-01 3.6078E+00 -1.0580E+01 1.8556E+01 -1.9000E+01 1.0304E+01 -2.2137E+00 S6 -3.6314E-02 -1.9646E-02 2.5905E-01 -8.8085E-01 1.6367E+00 -1.9165E+00 1.3918E+00 -5.7203E-01 1.0118E-01 S7 -9.5861E-02 3.2807E-02 2.2572E-02 -5.0955E-02 2.0860E-02 1.6038E-02 -1.8828E-02 6.7786E-03 -8.5364E-04 S8 -6.1951E-02 -1.6116E-03 4.0166E-02 -4.4052E-02 2.5353E-02 -8.4661E-03 1.5684E-03 -1.3468E-04 2.4600E-06 S9 7.1194E-03 -9.7819E-03 1.0832E-02 -2.6763E-02 4.8580E-02 -6.0302E-02 5.1470E-02 -2.8855E-02 1.0279E-02 S10 -2.1678E-01 -1.8220E-02 1.9732E-01 -3.4727E-01 3.8702E-01 -2.9885E-01 1.6259E-01 -6.2049E-02 1.6256E-02 S11 -1.2979E-01 6.9373E-02 -3.2151E-02 1.2296E-02 -4.0808E-03 1.0812E-03 -2.0712E-04 2.7146E-05 -2.3490E-06 S12 2.0382E-01 -1.0980E-01 5.2402E-02 -1.8255E-02 4.2633E-03 -6.6096E-04 6.7399E-05 -4.3495E-06 1.5794E-07 S13 -6.2422E-03 -1.0482E-01 6.2872E-02 -1.8170E-02 3.0231E-03 -2.8751E-04 1.1459E-05 6.0001E-07 -1.0681E-07 S14 -2.0716E-01 7.4219E-02 -2.3676E-02 6.3921E-03 -1.3188E-03 1.9582E-04 -2.0447E-05 1.4795E-06 -7.2404E-08

[0103] Table 4

[0104] Figure 4A Shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 2, which represents the deviation of the convergence 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 4C Shows the lateral chromatic aberration curve of the optical imaging lens of Embodiment 2, which represents the deviation of different image heights of light rays on the imaging surface after passing through the lens. According to Figures 4A to 4CIt can be seen that the optical imaging lens given in Embodiment 2 can achieve good imaging quality.

[0105] Example 3

[0106] The following refers to Figures 5 to 6C the optical imaging lens according to Embodiment 3 of the present application is described. Figure 5 FIG. shows a schematic structural diagram of the optical imaging lens according to Embodiment 3 of the present application.

[0107] As Figure 5 shown, the optical imaging lens sequentially includes, along the optical axis from the object side to the image side: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and a filter E8.

[0108] The first lens E1 has a negative optical power, its object side surface S1 is concave, and its image side surface S2 is convex. The second lens E2 has a negative optical power, its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has a positive optical power, its object side surface S5 is convex, and its image side surface S6 is convex. The fourth lens E4 has a negative optical power, its object side surface S7 is convex, and its image side surface S8 is concave. The fifth lens E5 has a negative optical power, its object side surface S9 is concave, and its image side surface S10 is concave. The sixth lens E6 has a positive optical power, its object side surface S11 is convex, and its image side surface S12 is convex. The seventh lens E7 has a negative optical power, its object side surface S13 is convex, and its image side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. The optical imaging lens has an imaging surface S17, and light from an object sequentially passes through the surfaces S1 to S16 and finally forms an image on the imaging surface S17.

[0109] In Embodiment 3, the value of the total effective focal length f of the optical imaging lens is 3.36 mm, the value of the f-number Fno of the optical imaging lens is 2.27, the on-axis distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S17 is 7.78 mm, the half of the diagonal length of the effective pixel region on the imaging surface S17, ImgH, is 5.20 mm, and the half of the maximum field of view, Semi-FOV, is 59.90°.

[0110] Table 5 shows the basic parameter table of the optical imaging lens of Embodiment 3, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm). Table 6 shows the higher-order term coefficients of the aspherical mirror surfaces that can be used in Embodiment 3, and each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0111]

[0112] Table 5

[0113] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 8.6372E-02 -3.6093E-02 1.4961E-02 -4.4540E-03 6.9130E-04 3.0147E-06 -2.0430E-05 3.1818E-06 -1.6617E-07 S2 1.2978E-01 -8.8215E-02 6.8728E-02 -4.6631E-02 2.0414E-02 -5.5352E-03 9.1270E-04 -8.4580E-05 3.3917E-06 S3 3.1737E-02 -1.4463E-01 2.7588E-01 -5.5456E-01 7.6798E-01 -6.6301E-01 3.4981E-01 -1.0351E-01 1.3130E-02 S4 -4.4962E-03 3.6370E-01 -2.6955E+00 1.0388E+01 -2.4366E+01 3.5644E+01 -3.1463E+01 1.5223E+01 -3.0491E+00 S5 -9.6047E-03 1.5105E-02 -3.0786E-01 1.5653E+00 -5.0882E+00 1.0308E+01 -1.2502E+01 8.2147E+00 -2.2137E+00 S6 -3.7276E-02 -3.1262E-02 3.4487E-01 -1.1106E+00 1.9735E+00 -2.2051E+00 1.5332E+00 -6.0692E-01 1.0408E-01 S7 -9.7885E-02 3.6461E-02 3.2244E-02 -8.3157E-02 6.4472E-02 -1.6650E-02 -4.6791E-03 3.4677E-03 -5.3148E-04 S8 -5.9946E-02 -1.0074E-02 5.6776E-02 -6.2353E-02 3.7692E-02 -1.3645E-02 2.8889E-03 -3.2160E-04 1.3690E-05 S9 1.4882E-02 -5.5318E-02 1.5609E-01 -3.1119E-01 4.0677E-01 -3.6213E-01 2.2537E-01 -9.7595E-02 2.8606E-02 S10 -2.1564E-01 -3.8450E-02 2.6515E-01 -4.6341E-01 5.1027E-01 -3.8695E-01 2.0629E-01 -7.7070E-02 1.9747E-02 S11 -1.3408E-01 7.8496E-02 -4.0093E-02 1.6541E-02 -5.6344E-03 1.4804E-03 -2.7914E-04 3.6141E-05 -3.1050E-06 S12 2.0797E-01 -1.1332E-01 5.5960E-02 -2.0521E-02 5.1160E-03 -8.6364E-04 9.9137E-05 -7.6728E-06 3.8849E-07 S13 -4.1724E-03 -1.0639E-01 6.2671E-02 -1.7591E-02 2.7631E-03 -2.2741E-04 3.0708E-06 1.3379E-06 -1.4736E-07 S14 -2.0257E-01 6.9180E-02 -2.0596E-02 5.2071E-03 -1.0207E-03 1.4558E-04 -1.4693E-05 1.0313E-06 -4.9079E-08

[0114] Table 6

[0115] Figure 6A shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 3, which represents the deviation of the convergence focal points of light rays of different wavelengths after passing through the lens. Figure 6B shows the astigmatism curve of the optical imaging lens of Embodiment 3, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 6C shows the lateral chromatic aberration curve of the optical imaging lens of Embodiment 3, which represents the deviation of different image heights of light rays on the imaging plane after passing through the lens. According to Figures 6A to 6C it can be known that the optical imaging lens given in Embodiment 3 can achieve good imaging quality.

[0116] Example 4

[0117] The following refers to Figures 7 to 8C describes the optical imaging lens according to Embodiment 4 of the present application. Figure 7 shows a schematic structural diagram of the optical imaging lens according to Embodiment 4 of the present application.

[0118] As Figure 7 shown, the optical imaging lens sequentially includes, from the object side to the image side along the optical axis: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and a filter E8.

[0119] The first lens E1 has a negative focal power, its object side S1 is concave, and its image side S2 is concave. The second lens E2 has a positive focal power, its object side S3 is convex, and its image side S4 is concave. The third lens E3 has a positive focal power, its object side S5 is concave, and its image side S6 is convex. The fourth lens E4 has a negative focal power, its object side S7 is convex, and its image side S8 is concave. The fifth lens E5 has a negative focal power, its object side S9 is concave, and its image side S10 is concave. The sixth lens E6 has a positive focal power, its object side S11 is convex, and its image side S12 is convex. The seventh lens E7 has a negative focal power, its object side S13 is convex, and its image side S14 is concave. The filter E8 has an object side S15 and an image side S16. The optical imaging lens has an imaging plane S17, and light from an object sequentially passes through the surfaces S1 to S16 and finally forms an image on the imaging plane S17.

[0120] In Embodiment 4, the value of the total effective focal length f of the optical imaging lens is 3.28 mm, the value of the f-number Fno of the optical imaging lens is 2.27, the value of the on-axis distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S17 is 7.92 mm, the value of half of the diagonal length ImgH of the effective pixel region on the imaging surface S17 is 5.20 mm, and the value of half of the maximum field of view Semi-FOV is 59.90°.

[0121] 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 high-order term coefficients available 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.

[0122]

[0123]

[0124] Table 7

[0125] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 1.0521E-01 -5.6632E-02 2.9023E-02 -1.1450E-02 3.1589E-03 -5.7535E-04 6.4768E-05 -3.9627E-06 9.4255E-08 S2 1.4383E-01 -8.9592E-02 5.8359E-02 -3.1269E-02 7.8940E-03 9.6932E-05 -4.8617E-04 9.6438E-05 -6.1767E-06 S3 3.5226E-03 -9.5720E-02 1.6281E-01 -3.5546E-01 4.7354E-01 -3.7592E-01 1.8948E-01 -5.7029E-02 7.7138E-03 S4 2.4223E-02 -2.0544E-01 1.4971E+00 -7.4736E+00 2.2722E+01 -4.2254E+01 4.7332E+01 -2.9322E+01 7.7502E+00 S5 -9.3230E-03 -7.8966E-02 2.8332E-01 -4.8775E-01 -8.4198E-01 5.1283E+00 -9.0389E+00 7.2290E+00 -2.2137E+00 S6 -4.5082E-02 -1.2113E-02 2.9790E-01 -1.1383E+00 2.3325E+00 -2.9412E+00 2.2475E+00 -9.5383E-01 1.7215E-01 S7 -1.0472E-01 4.9898E-02 3.6349E-03 -6.4775E-02 8.9566E-02 -7.0338E-02 3.4332E-02 -9.7520E-03 1.2307E-03 S8 -6.0125E-02 -1.8639E-04 4.0688E-02 -5.2734E-02 3.8088E-02 -1.7180E-02 4.7798E-03 -7.5178E-04 5.1121E-05 S9 1.7611E-02 -4.3735E-02 1.0037E-01 -1.5501E-01 1.5774E-01 -1.1101E-01 5.6207E-02 -2.0550E-02 5.2778E-03 S10 -2.0543E-01 -8.2628E-03 1.3305E-01 -1.8890E-01 1.6598E-01 -9.9652E-02 4.1552E-02 -1.1942E-02 2.3127E-03 S11 -1.2543E-01 7.1535E-02 -3.5472E-02 1.3327E-02 -3.7824E-03 7.9215E-04 -1.1903E-04 1.2497E-05 -8.8793E-07 S12 1.8215E-01 -6.4644E-02 1.2716E-02 6.0578E-04 -1.2392E-03 3.8892E-04 -6.7433E-05 7.3634E-06 -5.1822E-07 S13 -3.2450E-02 -7.2866E-02 4.5996E-02 -1.3852E-02 2.5343E-03 -2.9445E-04 2.0324E-05 -5.2354E-07 -3.7214E-08 S14 -2.2280E-01 8.6236E-02 -2.9353E-02 8.1264E-03 -1.6859E-03 2.5087E-04 -2.6276E-05 1.9089E-06 -9.3837E-08

[0126] Table 8

[0127] Figure 8A shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 4, which represents the deviation of the converging 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 longitudinal chromatic aberration curve of the optical imaging lens of Embodiment 4, which represents the deviation of different image heights of light rays on the imaging surface after passing through the lens. According to Figures 8A to 8C it can be seen that the optical imaging lens given in Embodiment 4 can achieve good imaging quality.

[0128] Example 5

[0129] The following refers to Figures 9 to 10C describes the optical imaging lens according to Embodiment 5 of the present application. Figure 9 shows the structural schematic diagram of the optical imaging lens according to Embodiment 5 of the present application.

[0130] As Figure 9 shown, the optical imaging lens sequentially includes, from the object side to the image side along the optical axis: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and a filter E8.

[0131] The first lens E1 has a negative optical power, its object side S1 is concave, 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 concave. The third lens E3 has a positive optical power, its object side S5 is convex, and its image side S6 is convex. The fourth lens E4 has a positive optical power, its object side S7 is convex, and its image side S8 is concave. The fifth lens E5 has a negative optical power, its object side S9 is concave, and its image side S10 is concave. The sixth lens E6 has a positive optical power, its object side S11 is convex, and its image side S12 is convex. The seventh lens E7 has a negative optical power, its object side S13 is convex, and its image side S14 is concave. The filter E8 has an object side S15 and an image side S16. The optical imaging lens has an imaging surface S17, and light from an object sequentially passes through the surfaces S1 to S16 and finally forms an image on the imaging surface S17.

[0132] In Embodiment 5, the value of the total effective focal length f of the optical imaging lens is 3.28 mm, the value of the f-number Fno of the optical imaging lens is 2.27, the on-axis distance TTL from the object side S1 of the first lens E1 to the imaging surface S17 is 7.91 mm, the value of half of the diagonal length of the effective pixel region on the imaging surface S17, ImgH, is 5.20 mm, and the value of half of the maximum field of view, Semi-FOV, is 59.90°.

[0133] 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, where each aspherical surface type can be defined by the formula (1) given in the above Embodiment 1.

[0134]

[0135] Table 9

[0136] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 9.8098E-02 -4.8821E-02 2.2141E-02 -7.2268E-03 1.4997E-03 -1.5882E-04 -1.1153E-06 2.0529E-06 -1.4603E-07 S2 1.2524E-01 -4.7381E-02 -1.1844E-02 4.5367E-02 -4.1520E-02 1.8843E-02 -4.6145E-03 5.8577E-04 -3.0363E-05 S3 -1.6254E-02 -7.7185E-04 -2.2692E-01 6.4946E-01 -1.1170E+00 1.1610E+00 -6.9258E-01 2.1892E-01 -2.8527E-02 S4 2.6231E-02 -2.7033E-01 1.6257E+00 -6.4316E+00 1.5890E+01 -2.4572E+01 2.3318E+01 -1.2392E+01 2.8306E+00 S5 -8.8248E-03 2.5829E-02 -4.1084E-01 2.0583E+00 -6.1208E+00 1.1282E+01 -1.2724E+01 8.0790E+00 -2.2137E+00 S6 -3.6824E-01 8.3609E-01 -1.7574E+00 2.9038E+00 -3.5847E+00 3.0766E+00 -1.7028E+00 5.4006E-01 -7.4036E-02 S7 -2.3068E-01 4.1141E-01 -7.4795E-01 1.0296E+00 -1.0150E+00 6.6942E-01 -2.7571E-01 6.3483E-02 -6.1996E-03 S8 -7.5139E-02 -3.6691E-03 6.7055E-02 -8.6998E-02 6.0094E-02 -2.5183E-02 6.4698E-03 -9.4808E-04 6.0996E-05 S9 5.8644E-02 -2.1696E-01 5.0783E-01 -8.5685E-01 1.0138E+00 -8.3644E-01 4.8418E-01 -1.9612E-01 5.4488E-02 S10 -2.8108E-01 1.5542E-01 9.9457E-02 -4.1494E-01 4.8512E-01 -3.2051E-01 1.3524E-01 -3.7576E-02 6.7960E-03 S11 -2.8023E-01 3.5674E-01 -3.1695E-01 1.8595E-01 -7.3593E-02 1.9576E-02 -3.4194E-03 3.7077E-04 -2.1355E-05 S12 1.6673E-01 -1.6479E-01 1.7740E-01 -1.1054E-01 4.2647E-02 -1.1071E-02 2.0195E-03 -2.6157E-04 2.3608E-05 S13 -5.6204E-02 -1.1413E-01 1.1981E-01 -5.8096E-02 1.7240E-02 -3.4055E-03 4.6269E-04 -4.3497E-05 2.7825E-06 S14 -2.7043E-01 1.1544E-01 -3.5368E-02 7.6528E-03 -1.1916E-03 1.3631E-04 -1.1599E-05 7.3167E-07 -3.3288E-08

[0137] Table 10

[0138] Figure 10A Shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 5, which represents the deviation of the convergence 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 lateral chromatic aberration curve of the optical imaging lens of Embodiment 5, which represents the deviation of different image heights of light rays on the imaging surface after passing through the lens. According to Figures 10A to 10C It can be seen that the optical imaging lens given in Embodiment 5 can achieve good imaging quality.

[0139] Example 6

[0140] Refer to the following Figures 11 to 12C which describes an optical imaging lens according to Embodiment 6 of the present application. Figure 11 FIG. shows a schematic structural diagram of the optical imaging lens according to Embodiment 6 of the present application.

[0141] As Figure 11 shown, the optical imaging lens sequentially includes, from the object side to the image side along the optical axis: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and a filter E8.

[0142] The first lens E1 has a negative optical power, its object side surface S1 is concave, and its image side surface S2 is convex. The second lens E2 has a negative optical power, its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has a positive optical power, its object side surface S5 is convex, and its image side surface S6 is convex. The fourth lens E4 has a negative optical power, its object side surface S7 is convex, and its image side surface S8 is concave. The fifth lens E5 has a negative optical power, its object side surface S9 is concave, and its image side surface S10 is concave. The sixth lens E6 has a positive optical power, its object side surface S11 is convex, and its image side surface S12 is convex. The seventh lens E7 has a negative optical power, its object side surface S13 is convex, and its image side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. The optical imaging lens has an imaging surface S17, and light from an object sequentially passes through the surfaces S1 to S16 and finally forms an image on the imaging surface S17.

[0143] In Embodiment 6, the value of the total effective focal length f of the optical imaging lens is 3.36 mm, the value of the f-number Fno of the optical imaging lens is 2.27, the on-axis distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S17 is 7.75 mm, the value of half of the diagonal length of the effective pixel region on the imaging surface S17, ImgH, is 5.35 mm, and the value of half of the maximum field of view, Semi-FOV, is 61.22°.

[0144] 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 higher-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.

[0145]

[0146] Table 11

[0147] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 8.4580E-02 -3.5316E-02 1.4493E-02 -4.2956E-03 6.2022E-04 3.5751E-05 -2.8690E-05 4.1895E-06 -2.1404E-07 S2 1.2460E-01 -8.1425E-02 5.8396E-02 -3.9494E-02 1.8206E-02 -5.3021E-03 9.4402E-04 -9.4296E-05 4.0526E-06 S3 2.9491E-02 -1.2544E-01 1.2104E-01 -9.5245E-02 2.3247E-02 7.3294E-02 -9.3571E-02 4.5597E-02 -8.2642E-03 S4 2.5953E-02 4.1325E-02 -1.0293E+00 5.1755E+00 -1.4510E+01 2.4854E+01 -2.5517E+01 1.4367E+01 -3.3768E+00 S5 4.8946E-03 -1.3786E-01 7.1231E-01 -2.5550E+00 5.2387E+00 -5.5518E+00 1.1360E+00 3.2034E+00 -2.2137E+00 S6 -5.4789E-02 1.3926E-01 -4.6914E-01 1.1819E+00 -2.0408E+00 2.1843E+00 -1.3738E+00 4.5605E-01 -6.0095E-02 S7 -1.0731E-01 7.2026E-02 -5.9691E-02 7.1730E-02 -1.0891E-01 1.0937E-01 -6.1360E-02 1.7739E-02 -2.0623E-03 S8 -6.6617E-02 -4.5573E-03 5.9328E-02 -7.3179E-02 4.8701E-02 -1.9498E-02 4.6427E-03 -5.9793E-04 3.1121E-05 S9 1.0723E-03 4.6174E-02 -2.4273E-01 5.7437E-01 -8.2308E-01 7.7186E-01 -4.8750E-01 2.0936E-01 -6.0468E-02 S10 -2.0623E-01 -2.2291E-02 2.3841E-01 -4.6680E-01 5.4237E-01 -4.1455E-01 2.1583E-01 -7.7198E-02 1.8736E-02 S11 -1.3527E-01 9.5977E-02 -6.5203E-02 3.5965E-02 -1.4926E-02 4.3746E-03 -8.8019E-04 1.1983E-04 -1.0810E-05 S12 1.6309E-01 -6.8073E-02 3.3699E-02 -1.3702E-02 3.6341E-03 -6.1487E-04 6.6335E-05 -4.4397E-06 1.6780E-07 S13 -3.4281E-02 -6.5720E-02 4.1313E-02 -1.2169E-02 2.2504E-03 -3.0717E-04 3.5381E-05 -3.5033E-06 2.6714E-07 S14 -2.1212E-01 8.6806E-02 -3.1920E-02 9.3373E-03 -1.9927E-03 3.0053E-04 -3.1726E-05 2.3204E-06 -1.1491E-07

[0148] Table 12

[0149] Figure 12A shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 6, which represents the deviation of the convergence focal points of light rays of different wavelengths after passing through the lens. Figure 12B shows the astigmatism curve of the optical imaging lens of Embodiment 6, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 12C shows the longitudinal chromatic aberration curve of the optical imaging lens of Embodiment 6, which represents the deviation of different image heights on the imaging plane after light rays pass through the lens. According to Figures 12A to 12C it can be seen that the optical imaging lens given in Embodiment 6 can achieve good imaging quality.

[0150] Example 7

[0151] The following refers to Figures 13 to 14C describes the optical imaging lens according to Embodiment 7 of the present application. Figure 13 shows a schematic structural diagram of the optical imaging lens according to Embodiment 7 of the present application.

[0152] As Figure 13 shown, the optical imaging lens sequentially includes, from the object side to the image side along the optical axis: a first lens E1, a second lens E2, a diaphragm STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and a filter E8.

[0153] The first lens E1 has a negative optical power, its object side S1 is concave, 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 positive optical power, its object side S5 is convex, and its image side S6 is convex. The fourth lens E4 has a negative optical power, its object side S7 is convex, and its image side S8 is concave. The fifth lens E5 has a negative optical power, its object side S9 is concave, and its image side S10 is concave. The sixth lens E6 has a positive optical power, its object side S11 is convex, and its image side S12 is convex. The seventh lens E7 has a negative optical power, its object side S13 is convex, and its image side S14 is concave. The filter E8 has an object side S15 and an image side S16. The optical imaging lens has an imaging surface S17, and light from an object sequentially passes through the surfaces S1 to S16 and finally forms an image on the imaging surface S17.

[0154] In Embodiment 7, the value of the total effective focal length f of the optical imaging lens is 3.36 mm, the value of the f-number Fno of the optical imaging lens is 2.28, the value of the on-axis distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S17 is 7.99 mm, the value of half of the diagonal length of the effective pixel region on the imaging surface S17, ImgH, is 5.33 mm, and the value of half of the maximum field of view, Semi-FOV, is 60.78°.

[0155] Table 13 shows the basic parameter table of the optical imaging lens of Embodiment 7, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm). Table 14 shows the high-order term coefficients applicable to each aspherical mirror surface in Embodiment 7, where each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0156]

[0157]

[0158] Table 13

[0159] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 9.1541E-02 -5.3271E-02 6.2581E-02 -8.7112E-02 9.6013E-02 -7.6052E-02 4.3113E-02 -1.7618E-02 5.1934E-03 S2 1.1866E-01 -4.1071E-02 6.2036E-02 -2.4871E-01 6.6419E-01 -1.1167E+00 1.2680E+00 -1.0110E+00 5.7411E-01 S3 -1.1291E-02 -2.6930E-02 -7.4730E-02 4.6299E-01 -1.3264E+00 2.0836E+00 -1.4995E+00 -5.3722E-01 2.3144E+00 S4 6.6787E-03 -3.3519E-01 3.5161E+00 -2.6326E+01 1.3604E+02 -4.9523E+02 1.2901E+03 -2.4235E+03 3.2804E+03 S5 -1.1947E-02 9.0338E-02 -8.9849E-01 4.0258E+00 -1.0987E+01 1.8357E+01 -1.8202E+01 9.6980E+00 -2.1011E+00 S6 -4.8200E-02 -1.4304E-01 1.5845E+00 -7.8756E+00 2.3406E+01 -4.5075E+01 5.7394E+01 -4.7835E+01 2.4918E+01 S7 -1.0300E-01 6.0457E-02 3.0598E-02 -4.0064E-01 1.0637E+00 -1.6279E+00 1.6040E+00 -1.0328E+00 4.2095E-01 S8 -6.9423E-02 3.2092E-02 -2.2833E-02 2.0983E-02 -2.0219E-02 1.6531E-02 -1.0145E-02 4.3571E-03 -1.2198E-03 S9 -3.1853E-02 6.9380E-02 -1.7255E-01 3.2473E-01 -4.2595E-01 3.8723E-01 -2.4432E-01 1.0659E-01 -3.1533E-02 S10 -3.0497E-01 1.0134E-01 1.3374E-01 -4.5917E-01 6.9999E-01 -6.9723E-01 4.9026E-01 -2.4942E-01 9.2264E-02 S11 -1.8705E-01 1.5351E-01 -1.0709E-01 6.0398E-02 -2.6964E-02 9.0594E-03 -2.2279E-03 3.9741E-04 -5.1136E-05 S12 2.3310E-01 -1.8688E-01 1.5489E-01 -8.9466E-02 3.4196E-02 -8.9944E-03 1.6853E-03 -2.2940E-04 2.2802E-05 S13 8.8362E-03 -1.7164E-01 1.4727E-01 -7.0287E-02 2.2009E-02 -4.7801E-03 7.4100E-04 -8.3263E-05 6.8141E-06 S14 -2.4042E-01 8.9606E-02 -2.4406E-02 4.5931E-03 -5.7705E-04 4.4428E-05 -1.2222E-06 -1.5733E-07 2.4182E-08

[0160] Table 14

[0161] Figure 14A Shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 7, which represents the deviation of the convergence focal points of light rays of different wavelengths after passing through the lens. Figure 14B Shows the astigmatism curve of the optical imaging lens of Embodiment 7, which represents the curvature of the meridional image plane and the curvature of the sagittal image plane. Figure 14C Shows the longitudinal chromatic aberration curve of the optical imaging lens of Embodiment 7, which represents the deviation of different image heights of light rays on the imaging surface after passing through the lens. According to Figures 14A to 14C It can be seen that the optical imaging lens given in Embodiment 7 can achieve good imaging quality.

[0162] Example 8

[0163] The following refers to Figures 15 to 16C Describes the optical imaging lens according to Embodiment 8 of the present application. Figure 15 Shows a schematic structural diagram of the optical imaging lens according to Embodiment 8 of the present application.

[0164] As Figure 15 Shown, the optical imaging lens sequentially includes, from the object side to the image side along the optical axis: a first lens E1, a second lens E2, a diaphragm STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and a filter E8.

[0165] The first lens E1 has a negative focal power, its object side S1 is concave, and its image side S2 is concave. The second lens E2 has a positive focal power, its object side S3 is convex, and its image side S4 is concave. The third lens E3 has a positive focal power, its object side S5 is convex, and its image side S6 is convex. The fourth lens E4 has a negative focal power, its object side S7 is convex, and its image side S8 is concave. The fifth lens E5 has a positive focal power, its object side S9 is concave, and its image side S10 is convex. The sixth lens E6 has a positive focal power, its object side S11 is concave, and its image side S12 is convex. The seventh lens E7 has a negative focal power, its object side S13 is convex, and its image side S14 is concave. The filter E8 has an object side S15 and an image side S16. The optical imaging lens has an imaging surface S17, and light from an object sequentially passes through the surfaces S1 to S16 and finally forms an image on the imaging surface S17.

[0166] In Embodiment 8, the value of the total effective focal length f of the optical imaging lens is 3.34 mm, the value of the f-number Fno of the optical imaging lens is 2.27, the on-axis distance TTL from the object side S1 of the first lens E1 to the imaging surface S17 is 7.96 mm, the value of half of the diagonal length of the effective pixel region on the imaging surface S17, ImgH, is 5.20 mm, and the value of half of the maximum field of view, Semi-FOV, is 59.90°.

[0167] Table 15 shows the basic parameter table of the optical imaging lens of Embodiment 8, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm). Table 16 shows the high-order term coefficients that can be used for each aspherical mirror surface in Embodiment 8, where each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.

[0168]

[0169] Table 15

[0170]

[0171]

[0172] Table 16

[0173] Figure 16A shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 8, which represents the deviation of the convergence focal points of light rays of different wavelengths after passing through the lens. Figure 16B shows the astigmatism curve of the optical imaging lens of Embodiment 8, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 16C shows the lateral chromatic aberration curve of the optical imaging lens of Embodiment 8, which represents the deviation of different image heights of light rays on the imaging surface after passing through the lens. According to Figures 16A to 16CIt can be seen that the optical imaging lens given in Embodiment 8 can achieve good imaging quality.

[0174] In summary, Embodiments 1 to 8 respectively satisfy the relationships shown in Table 17.

[0175] Conditional / Example 1 2 3 4 5 6 7 8 f×tan(Semi-FOV)(mm) 6.17 6.09 5.80 5.66 5.66 6.11 6.01 5.77 TTL / ImgH 1.47 1.46 1.50 1.52 1.52 1.45 1.50 1.53 |f7 / R13| 1.67 1.32 1.29 1.53 0.89 1.34 1.34 1.33 (R7+R8) / R8 3.81 3.59 3.61 4.03 1.99 3.58 3.19 3.58 |f / f6|+|f / f7| 2.72 2.91 2.92 2.73 3.15 2.86 3.04 2.03 (CT1+CT2+CT3) / T23 5.35 5.58 5.64 6.03 5.06 5.86 7.39 4.81 R7 / f 2.84 2.49 2.50 3.48 0.97 2.41 2.02 2.44 SAG11 / SAG71 -1.17 -1.03 -1.04 -1.46 -1.30 -0.97 -1.18 -1.15 ET3 / SAG32 -0.90 -0.77 -0.79 -0.96 -0.93 -0.81 -0.93 -0.86 f234 / f 1.21 1.61 1.68 1.26 1.09 1.79 1.34 1.29 ET7(mm) 1.24 1.24 1.20 1.13 1.24 1.22 1.16 1.05

[0176] Table 17

[0177] The present application also 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.

[0178] The above description is only the preferred embodiments of the present application and the description of the applied technical principles. Those skilled in the art should understand that the protection scope involved in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the 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) having similar functions disclosed in the present application.

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 negative optical power, whose object side is concave; A second lens with optical power, whose object side is convex; A third lens with positive optical power, whose image side is convex; A fourth lens with optical power, whose object side is convex and image side is concave; A fifth lens with optical power, whose object side is concave; A sixth lens with positive optical power, whose image side is convex; and A seventh 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 seven; The optical power of the second lens is positive, and the optical power of at least one of the fourth lens and the fifth lens is negative; or, the optical powers of the second lens, the fourth lens, and the fifth lens are all negative; The total effective focal length f of the optical imaging lens and half of the maximum field of view angle Semi - FOV of the optical imaging lens satisfy 5.66 mm ≤ f × tan(Semi - FOV) < 6.20 mm; The total effective focal length f of the optical imaging lens, the effective focal length f6 of the sixth lens, and the effective focal length f7 of the seventh lens satisfy 2.72 ≤ f / f6 + f / f7 <3.2; The central thickness CT1 of the first lens on the optical axis, the central thickness CT2 of the second lens on the optical axis, the central thickness CT3 of the third lens on the optical axis, and the spacing distance T23 between the second lens and the third lens on the optical axis satisfy 5.06 ≤ (CT1 + CT2 + CT3) / T23 < 7.

40.

2. The optical imaging lens according to claim 1, wherein The maximum field of view angle FOV of the optical imaging lens satisfies 119.80° ≤ FOV ≤ 122.84°.

3. The optical imaging lens according to claim 1, wherein, Half of the diagonal length ImgH of the effective pixel region on the imaging surface of the optical imaging lens satisfies 5.20 mm ≤ ImgH ≤ 5.40 mm.

4. The optical imaging lens according to claim 1, wherein The distance TTL from the object side of the first lens to the imaging surface on the optical axis and half of the diagonal length ImgH of the effective pixel region on the imaging surface satisfy 1.45 ≤ TTL / ImgH < 1.

54.

5. The optical imaging lens according to claim 1, characterized in that, The effective focal length f7 of the seventh lens and the radius of curvature R13 of the object side surface of the seventh lens satisfy 0.89 ≤ f7 / R13 <1.

7.

6. The optical imaging lens according to claim 1, wherein The curvature radius R7 of the object side of the fourth lens and the curvature radius R8 of the image side of the fourth lens satisfy 1.99 ≤ (R7 + R8) / R8 < 4.

05.

7. The optical imaging lens according to claim 1, wherein, The curvature radius R7 of the object side of the fourth lens and the total effective focal length f of the optical imaging lens satisfy 0.97 ≤ R7 / f < 3.

49.

8. The optical imaging lens according to claim 1, characterized in that, The axial distance SAG11 between the intersection of the object side of the first lens and the optical axis and the vertex of the effective radius of the object side of the first lens and the axial distance SAG71 between the intersection of the object side of the seventh lens and the optical axis and the vertex of the effective radius of the object side of the seventh lens satisfy - 1.46 ≤ SAG11 / SAG71 ≤ - 0.

97.

9. The optical imaging lens according to claim 1, wherein The edge thickness ET3 of the third lens and 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 satisfy - 0.98 < ET3 / SAG32 ≤ - 0.

77.

10. The optical imaging lens according to claim 1, characterized in that, The combined focal length f234 of the second lens, the third lens, and the fourth lens and the total effective focal length f of the optical imaging lens satisfy 1.09 ≤ f234 / f < 1.

80.

11. The optical imaging lens according to claim 1, wherein The edge thickness ET7 of the seventh lens satisfies 1.13 mm ≤ ET7 ≤ 1.24 mm.

12. The optical imaging lens according to any one of claims 1 to 10, characterized in that, The optical imaging lens further includes a diaphragm, and the diaphragm is disposed between the second lens and the third lens.

Images