Optical imaging lens and electronic device having the same

Abstract

The present invention provides an optical imaging lens and an electronic device having the same. The optical imaging lens comprises: a first lens having negative focal power, a second lens having negative focal power, a first side surface of the second lens being concave, and a second side surface of the second lens being convex; a third lens having positive focal power, and at least one of the first side surface of the third lens and the second side surface of the third lens being convex; a fourth lens having positive focal power, a first side surface of the fourth lens being convex, and the second side surface of the fourth lens being convex; a fifth lens having optical power; at least one of the first side surface of the sixth lens and the second side surface of the sixth lens being concave; and a seventh lens having positive focal power, and at least one of the first side surface of the seventh lens and the second side surface of the seventh lens being convex. The present invention solves the problem in the prior art that optical imaging lenses cannot simultaneously meet the requirements of a conventional horizontal field of view, a large vertical field of view, miniaturization, and high resolution.

Description

Technical Field

[0001] The present invention relates to the technical field of optical imaging equipment, and in particular to an optical imaging lens and an electronic device having the same. Background Art

[0002] Traffic lights are a key recognition target for driver-assisted driving systems during vehicle operation. To detect and identify traffic lights even at intersections with pedestrian crossings, the imaging system requires a wide vertical field of view to ensure high resolution. However, at high speeds, the camera module must maintain a high refresh rate to cope with the rapidly changing environment. Therefore, the vertical dimension of the chip should not be too large, which limits the size of the optical imaging lens.

[0003] In other words, the optical imaging lens in the prior art has the problem of not being able to simultaneously meet the requirements of a conventional horizontal field of view, a large vertical field of view, miniaturization, and high resolution. Summary of the Invention

[0004] The main purpose of the present invention is to provide an optical imaging lens and an electronic device having the same, so as to solve the problem that optical imaging lenses in the prior art cannot simultaneously meet the requirements of a conventional horizontal field of view, a large vertical field of view, miniaturization, and high resolution.

[0005] To achieve the above objective, according to one aspect of the present invention, there is provided an optical imaging lens, wherein the optical imaging lens has only two symmetric planes, namely a YZ plane and an XZ plane, the YZ plane and the XZ plane being perpendicular to each other and intersecting an optical axis Z, and the optical imaging lens comprising: a first lens having negative optical power, wherein at least one of a first side surface of the first lens and a second side surface of the first lens is concave; a second lens having negative optical power, wherein the first side surface of the second lens is concave, and the second side surface of the second lens is convex; a third lens having positive optical power, wherein at least one of a first side surface of the third lens and a second side surface of the third lens is convex; a fourth lens having positive optical power, wherein the first side surface of the fourth lens is convex, and the second side surface of the fourth lens is convex; a fifth lens having optical power; a sixth lens having optical power, wherein at least one of a first side surface of the sixth lens and a second side surface of the sixth lens is concave; and a seventh lens having positive optical power, wherein at least one of a first side surface of the seventh lens and a second side surface of the seventh lens is convex.

[0006] Furthermore, the first side surface of the first lens is a convex surface, and the second side surface of the first lens is a concave surface.

[0007] Furthermore, the first side surface of the first lens is concave in the YZ plane and convex in the XZ plane, and the second side surface of the second lens is concave.

[0008] Furthermore, the first side surface of the third lens is a convex surface, and the second side surface of the third lens is a convex surface.

[0009] Furthermore, the first side surface of the third lens is a convex surface, and the second side surface of the third lens is a concave surface.

[0010] Furthermore, the fifth lens has positive optical power, the first side surface of the fifth lens is a convex surface, and the second side surface of the fifth lens is a convex surface.

[0011] Furthermore, the fifth lens element has negative optical power, the first side surface of the fifth lens element is concave, and the second side surface of the fifth lens element is concave.

[0012] Furthermore, the sixth lens has negative optical power, the first side surface of the sixth lens is concave, and the second side surface of the sixth lens is concave.

[0013] Furthermore, the sixth lens has positive refractive power, the first side surface of the sixth lens is convex, and the second side surface of the sixth lens is concave.

[0014] Furthermore, the first side surface of the seventh lens is a convex surface, and the second side surface of the seventh lens is a convex surface.

[0015] Furthermore, the first side surface of the seventh lens is a convex surface, and the second side surface of the seventh lens is a concave surface in the YZ plane and a convex surface in the XZ plane.

[0016] Furthermore, the optical imaging lens also includes a stop, which is arranged between the third lens and the fourth lens.

[0017] Furthermore, the fifth lens and the sixth lens are cemented together to form a cemented lens.

[0018] Furthermore, the first lens and the seventh lens are free-form surface lenses, and the focal length of the first lens along the XZ plane is different from that in the YZ plane, and the focal length of the seventh lens along the XZ plane is different from that in the YZ plane.

[0019] Furthermore, the focal length Fx of the optical imaging lens along the XZ plane direction is different from the focal length Fy of the optical imaging lens along the YZ plane direction.

[0020] Furthermore, the focal length F1x of the first lens along the XZ plane direction and the focal length F1y of the first lens along the YZ plane direction satisfy: 1<F1x / F1y≤2.

[0021] Furthermore, the focal length F7x of the seventh lens along the XZ plane direction and the focal length F7y of the seventh lens along the YZ plane direction satisfy: 1<F7x / F7y≤2.

[0022] Furthermore, the focal length F1x of the first lens along the XZ plane direction and the focal length Fx of the optical imaging lens along the XZ plane direction satisfy: |F1x / Fx|≥1.

[0023] Furthermore, the focal length F1y of the first lens along the YZ plane direction and the focal length Fy of the optical imaging lens along the YZ plane direction satisfy: |F1y / Fy|≥1.

[0024] Furthermore, the focal length F7x of the seventh lens along the XZ plane direction and the focal length Fx of the optical imaging lens along the XZ plane direction satisfy: |F7x / Fx|≥1.

[0025] Furthermore, the focal length F7y of the seventh lens along the YZ plane direction and the focal length Fy of the optical imaging lens along the YZ plane direction satisfy: |F7y / Fy|≥1.

[0026] Furthermore, the total optical length TTL of the optical imaging lens, the image height Hx in the XZ plane direction corresponding to the maximum field of view angle of the optical imaging lens, and the maximum field of view FOVx in the XZ plane direction of the optical imaging lens satisfy the following relationship: TTL / Hx / FOVx≤0.08.

[0027] Furthermore, the total optical length TTL of the optical imaging lens, the image height Hx in the XZ plane direction corresponding to the maximum field of view of the optical imaging lens, and the arc θx of the maximum field of view of the optical imaging lens in the XZ plane direction satisfy the following conditions: TTL / Hx / θx≤5.

[0028] Furthermore, a curvature radius L2R1 of the first side surface of the second lens, a curvature radius L2R2 of the second side surface of the second lens, and a center thickness d2 of the second lens satisfy the following relationship: 0.6≤L2R1 / (L2R2+d2)≤2.

[0029] Furthermore, the following conditions are satisfied: Dx / Hx / FOVx≤0.05: a clear aperture Dx of the first side surface of the first lens in the XZ plane direction corresponding to the maximum field of view of the optical imaging lens, an image height Hx in the XZ plane direction corresponding to the maximum field of view of the optical imaging lens, and the maximum field of view FOVx of the optical imaging lens in the XZ plane direction.

[0030] Furthermore, a clear aperture Dx of the first side surface of the first lens in the XZ plane direction corresponding to the maximum field of view of the optical imaging lens, an image height Hx in the XZ plane direction corresponding to the maximum field of view of the optical imaging lens, and a radian θx of the maximum field of view of the optical imaging lens in the XZ plane direction satisfy the following conditions: Dx / Hx / θx≤3.

[0031] Furthermore, the following conditions are satisfied: Dx / Hx / Fx≤0.55 between a clear aperture Dx of the first side surface of the first lens in the XZ plane direction corresponding to the maximum field of view of the optical imaging lens, an image height Hx in the XZ plane direction corresponding to the maximum field of view of the optical imaging lens, and a focal length Fx of the optical imaging lens along the XZ plane.

[0032] Furthermore, a distance d67 between the sixth lens element and the seventh lens element and a total optical length TTL of the optical imaging lens element satisfy the following relationship: d67 / TTL≤0.08.

[0033] Furthermore, a distance BFL from the center of the second side surface of the last lens of the optical imaging lens to the center of the imaging plane of the optical imaging lens and a total optical length TTL of the optical imaging lens satisfy the following relationship: BFL / TTL≥0.06.

[0034] Furthermore, the maximum field of view FOVx of the optical imaging lens in the XZ plane direction, the focal length Fx of the optical imaging lens along the XZ plane direction, and the image height Hx in the XZ plane direction corresponding to the maximum field of view of the optical imaging lens satisfy the following relationship: (FOVx×Fx) / Hx≥50.

[0035] Furthermore, a curvature radius L1R2 of the first side surface of the first lens element and a focal length Fx of the optical imaging lens along the XZ plane satisfy the relationship: L1R2 / Fx≤3.

[0036] According to another aspect of the present invention, an optical imaging lens is provided. The optical imaging lens has only two symmetric planes, namely a YZ plane and an XZ plane. The YZ plane and the XZ plane are perpendicular to each other and intersect at an optical axis Z. The optical imaging lens includes: a first lens having negative optical power; a second lens having negative optical power; a third lens having positive optical power; a fourth lens having positive optical power; a fifth lens having optical power; a sixth lens having optical power; and a seventh lens having positive optical power. A focal length Fx of the optical imaging lens along the XZ plane is different from a focal length Fy of the optical imaging lens along the YZ plane.

[0037] Furthermore, the first side surface of the first lens is a convex surface, and the second side surface of the first lens is a concave surface.

[0038] Furthermore, the first side surface of the first lens is concave in the YZ plane and convex in the XZ plane, and the second side surface of the second lens is concave.

[0039] Furthermore, the first side surface of the second lens is a concave surface, and the second side surface of the second lens is a convex surface.

[0040] Furthermore, the first side surface of the third lens is a convex surface, and the second side surface of the third lens is a convex surface.

[0041] Furthermore, the first side surface of the third lens is a convex surface, and the second side surface of the third lens is a concave surface.

[0042] Furthermore, the first side surface of the fourth lens is a convex surface, and the second side surface of the fourth lens is a convex surface.

[0043] Furthermore, the fifth lens has positive optical power, the first side surface of the fifth lens is a convex surface, and the second side surface of the fifth lens is a convex surface.

[0044] Furthermore, the fifth lens has negative optical power, the first side surface of the fifth lens is concave, and the second side surface of the fifth lens is concave.

[0045] Furthermore, the sixth lens has negative optical power, the first side surface of the sixth lens is concave, and the second side surface of the sixth lens is concave.

[0046] Furthermore, the sixth lens has positive refractive power, the first side surface of the sixth lens is convex, and the second side surface of the sixth lens is concave.

[0047] Furthermore, the first side surface of the seventh lens is a convex surface, and the second side surface of the seventh lens is a convex surface.

[0048] Furthermore, the first side surface of the seventh lens is a convex surface, and the second side surface of the seventh lens is a concave surface in the YZ plane and a convex surface in the XZ plane.

[0049] Furthermore, the optical imaging lens also includes a stop, which is arranged between the third lens and the fourth lens.

[0050] Furthermore, the fifth lens and the sixth lens are cemented together to form a cemented lens.

[0051] Furthermore, the first lens and the seventh lens are free-form surface lenses, and the focal length of the first lens along the XZ plane is different from that in the YZ plane, and the focal length of the seventh lens along the XZ plane is different from that in the YZ plane.

[0052] Furthermore, the focal length F1x of the first lens along the XZ plane direction and the focal length F1y of the first lens along the YZ plane direction satisfy: 1<F1x / F1y≤2.

[0053] Furthermore, the focal length F7x of the seventh lens along the XZ plane direction and the focal length F7y of the seventh lens along the YZ plane direction satisfy: 1<F7x / F7y≤2.

[0054] Furthermore, the focal length F1x of the first lens along the XZ plane direction and the focal length Fx of the optical imaging lens along the XZ plane direction satisfy: |F1x / Fx|≥1.

[0055] Furthermore, the focal length F1y of the first lens along the YZ plane direction and the focal length Fy of the optical imaging lens along the YZ plane direction satisfy: |F1y / Fy|≥1.

[0056] Furthermore, the focal length F7x of the seventh lens along the XZ plane direction and the focal length Fx of the optical imaging lens along the XZ plane direction satisfy: |F7x / Fx|≥1.

[0057] Furthermore, the focal length F7y of the seventh lens along the YZ plane direction and the focal length Fy of the optical imaging lens along the YZ plane direction satisfy: |F7y / Fy|≥1.

[0058] Furthermore, the total optical length TTL of the optical imaging lens, the image height Hx in the XZ plane direction corresponding to the maximum field of view angle of the optical imaging lens, and the maximum field of view FOVx in the XZ plane direction of the optical imaging lens satisfy the following relationship: TTL / Hx / FOVx≤0.08.

[0059] Furthermore, the total optical length TTL of the optical imaging lens, the image height Hx in the XZ plane direction corresponding to the maximum field of view of the optical imaging lens, and the arc θx of the maximum field of view of the optical imaging lens in the XZ plane direction satisfy the following conditions: TTL / Hx / θx≤5.

[0060] Furthermore, a curvature radius L2R1 of the first side surface of the second lens, a curvature radius L2R2 of the second side surface of the second lens, and a center thickness d2 of the second lens satisfy the following relationship: 0.6≤L2R1 / (L2R2+d2)≤2.

[0061] Furthermore, the following conditions are satisfied: Dx / Hx / FOVx≤0.05: a clear aperture Dx of the first side surface of the first lens in the XZ plane direction corresponding to the maximum field of view of the optical imaging lens, an image height Hx in the XZ plane direction corresponding to the maximum field of view of the optical imaging lens, and the maximum field of view FOVx of the optical imaging lens in the XZ plane direction.

[0062] Furthermore, a clear aperture Dx of the first side surface of the first lens in the XZ plane direction corresponding to the maximum field of view of the optical imaging lens, an image height Hx in the XZ plane direction corresponding to the maximum field of view of the optical imaging lens, and a radian θx of the maximum field of view of the optical imaging lens in the XZ plane direction satisfy the following conditions: Dx / Hx / θx≤3.

[0063] Furthermore, the following conditions are satisfied: Dx / Hx / Fx≤0.55 between a clear aperture Dx of the first side surface of the first lens in the XZ plane direction corresponding to the maximum field of view of the optical imaging lens, an image height Hx in the XZ plane direction corresponding to the maximum field of view of the optical imaging lens, and a focal length Fx of the optical imaging lens along the XZ plane.

[0064] Furthermore, a distance d67 between the sixth lens element and the seventh lens element and a total optical length TTL of the optical imaging lens element satisfy the following relationship: d67 / TTL≤0.08.

[0065] Furthermore, a distance BFL from the center of the second side surface of the last lens of the optical imaging lens to the center of the imaging plane of the optical imaging lens and a total optical length TTL of the optical imaging lens satisfy the following relationship: BFL / TTL≥0.06.

[0066] Furthermore, the maximum field of view FOVx of the optical imaging lens in the XZ plane direction, the focal length Fx of the optical imaging lens along the XZ plane direction, and the image height Hx in the XZ plane direction corresponding to the maximum field of view of the optical imaging lens satisfy the following relationship: (FOVx×Fx) / Hx≥50.

[0067] Furthermore, a curvature radius L1R2 of the first side surface of the first lens element and a focal length Fx of the optical imaging lens along the XZ plane satisfy the relationship: L1R2 / Fx≤3.

[0068] According to another aspect of the present invention, an electronic device is provided, comprising the above-mentioned optical imaging lens and an imaging element for converting an optical image formed by the optical imaging lens into an electrical signal.

[0069] The above technical solution facilitates the control of the focal length in the XZ plane and the YZ plane by setting the optical imaging lens in the form of a symmetrical plane of the XZ plane and the YZ plane. While ensuring the miniaturization of the optical imaging lens, it has a large vertical field of view and can also meet the conventional horizontal field of view, so that the horizontal field of view angle and the vertical field of view angle can be designed independently. At the same time, it will not cause the optical imaging lens to be too large, thereby ensuring the imaging quality of the optical imaging lens.

[0070] By designing the first lens to have a negative optical power, a diverging effect on light is achieved, which disperses the central light and the edge light of each field of view to expand the aperture and increase the system illumination. The first lens is preferably made of a material with a high refractive index to further improve the resolution quality, while also facilitating the reduction of the front port diameter and the miniaturization of the optical imaging lens. The first side of the first lens is a convex surface, and the second side of the first lens is a concave surface. The first side of the first lens is a convex surface in the YZ plane and a convex surface in the XZ plane, that is, the first side of the first lens is not a saddle surface, which is beneficial for the molding of the first lens. The second side of the first lens is a concave surface, which can collect as much light from a large field of view as possible and enter the rear optical system to achieve a large field of view angle and ensure the imaging quality of the optical imaging lens. Of course, the first side of the first lens can also be set in the form of a saddle surface, for example, the first side of the first lens is a concave surface in the YZ plane and a convex surface in the XZ plane, and the second side of the second lens is a concave surface. The first side surface of the first lens element is unevenly concave and convex in the YZ plane and the XZ plane to form a saddle surface. This arrangement is beneficial for increasing the difference in focal length between the XZ plane direction and the YZ plane direction, correcting asymmetric aberrations, especially asymmetric field curvature, to achieve high resolution.

[0071] By designing the second lens element with negative optical power, it diverges light, dispersing the central and peripheral rays of each field of view. This expands the aperture and increases system illumination, while also facilitating the correction of aberrations between the peripheral and central rays, achieving high resolution. Furthermore, the second lens element can be configured in a special concentric circle shape to create an optical path difference between the peripheral and central rays, allowing the central rays to diverge and enter the rear optical system. This facilitates reducing the front aperture and size of the optical imaging lens, contributing to its miniaturization and cost-effectiveness. Furthermore, configuring the second lens element with a first concave side and a second convex side further diverges the light converged by the first lens, reducing light deflection between the first and second lenses and ensuring smooth entry of the diverged light into the rear optical system.

[0072] By setting the third lens to have a positive optical focal length, it is beneficial to the convergence of light, so that the divergent light emitted by the second lens can smoothly enter the rear optical system after convergence, thereby reducing the aperture and total length of the optical imaging lens, which is beneficial to the miniaturization of the optical imaging lens. The first side of the third lens is a convex surface, and the second side of the third lens is a convex surface. If the first side of the third lens and the second side of the third lens are both convex surfaces, the deflection of light on the first side and the second side of the third lens can be reduced, which is beneficial to reducing the sensitivity of the optical imaging lens. Of course, the first side of the third lens can also be a convex surface, and the second side of the third lens can be a concave surface. Setting the second side of the third lens to be concave is beneficial for the light emitted from the second lens to converge through the first side of the third lens and then diverge through the second side of the third lens, which can effectively reduce spherical aberration and improve the resolution of the optical imaging lens.

[0073] By configuring the fourth lens element with positive optical power, light is converged, allowing it to smoothly enter the rear optical system, while also reducing the aperture and overall length of the optical imaging lens. Furthermore, designing the fourth lens element as a biconvex structure reduces light deflection at the first and second side surfaces of the fourth lens element, thereby reducing the sensitivity of the optical imaging lens.

[0074] By configuring the fifth lens element with positive optical power, a convex first side surface, and a convex second side surface, the positive optical power of the fifth lens ensures that it converges light, allowing it to converge more smoothly onto the imaging plane. This improves astigmatism and field curvature, and enhances the resolution of the optical imaging system. In the case of a positive optical power lens, both the first and second side surfaces are convex, and the lens edge transitions smoothly, ensuring that the emitted light converges smoothly and passes to the rear, further ensuring a smooth transition to the image plane and reducing the sensitivity of the optical imaging lens. Alternatively, the fifth lens element can be configured with negative optical power, with the first and second side surfaces being concave. By configuring the fifth lens element with negative optical power and a biconcave shape, the light diverges. Under the same field of view, the light emitted laterally through the fifth lens provides a larger light receiving surface for the subsequent optical imaging lens.

[0075] By configuring the sixth lens to have a negative optical power, with the first side of the sixth lens being concave and the second side of the sixth lens being concave. By configuring the sixth lens to have a negative optical power and be biconcave, light can be diverged so that, under the same field of view, the light emitted through the second side of the sixth lens can provide the subsequent optical system with a larger light receiving surface. Of course, the sixth lens can also be configured to have a positive optical power, with the first side of the sixth lens being convex and the second side of the sixth lens being concave. By configuring the second side of the sixth lens to be concave, so that its concave and convex surfaces are consistent with the first side of the seventh lens and the distance is relatively close, it is beneficial for light passing through the fifth and sixth lenses to quickly transition to the seventh lens, thereby correcting aberrations such as distortion and field curvature, thereby improving resolution.

[0076] By configuring the seventh lens element to have positive focal power, light rays ultimately converge onto the imaging plane, effectively improving the astigmatism and field curvature of the optical imaging lens and enhancing the resolution of the optical system. The first side surface of the seventh lens element is convex, and the second side surface is also convex. The second side surface of the seventh lens element is convex in both the YZ plane and the XZ plane, meaning that the second side surface of the seventh lens element is not a saddle surface, which facilitates molding of the seventh lens element. Configuring the first side surface of the seventh lens element to be convex facilitates light rays converging onto the imaging plane. Alternatively, the first side surface of the seventh lens element can be convex, while the second side surface of the seventh lens element is concave in both the YZ plane and the XZ plane, forming a saddle surface. This configuration facilitates increasing the difference in focal length between the XZ and YZ planes, correcting asymmetric aberrations, particularly asymmetric field curvature, to achieve high resolution. BRIEF DESCRIPTION OF THE DRAWINGS

[0077] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0078] Figure 1 1. A cross-sectional view of the optical imaging lens of Example 1 of the present invention in the YZ plane is shown;

[0079] Figure 2 1. A cross-sectional view of the optical imaging lens of Example 1 of the present invention in the XZ plane is shown;

[0080] Figure 3 1. A cross-sectional view of the optical imaging lens of Example 2 of the present invention in the YZ plane is shown;

[0081] Figure 4 1. A cross-sectional view of the optical imaging lens of Example 2 of the present invention in the XZ plane is shown;

[0082] Figure 5 1. A cross-sectional view of the optical imaging lens of Example 3 of the present invention in the YZ plane is shown;

[0083] Figure 6 1. A cross-sectional view of the optical imaging lens of Example 3 of the present invention in the XZ plane is shown;

[0084] Figure 7 1. A cross-sectional view of the optical imaging lens of Example 4 of the present invention in the YZ plane is shown;

[0085] Figure 8 1. A cross-sectional view of the optical imaging lens of Example 4 of the present invention in the XZ plane is shown;

[0086] Figure 9 1. A cross-sectional view of the optical imaging lens of Example 5 of the present invention in the YZ plane is shown;

[0087] Figure 10 1. A cross-sectional view of an optical imaging lens according to Example 5 of the present invention in the XZ plane is shown;

[0088] Figure 11 1. A cross-sectional view of the optical imaging lens of Example 6 of the present invention in the YZ plane is shown;

[0089] Figure 12 1. A cross-sectional view of the optical imaging lens of Example 6 of the present invention in the XZ plane is shown;

[0090] The above drawings include the following reference numerals:

[0091] L1, first lens; S1, first side surface of the first lens; S2, second side surface of the first lens; L2, second lens; S3, first side surface of the second lens; S4, second side surface of the second lens; L3, third lens; S5, first side surface of the third lens; S6, second side surface of the third lens; L4, fourth lens; S8, first side surface of the fourth lens; S9, second side surface of the fourth lens; L5, fifth lens; S10, first side surface of the fifth lens; S11, second side surface of the fifth lens (first side surface of the sixth lens); L6, sixth lens; S12, second side surface of the sixth lens; L7, seventh lens; S13, first side surface of the seventh lens; S14, second side surface of the seventh lens; L8, filter; S15, first side surface of the filter; S16, second side surface of the filter; S17, first side surface of the protective glass; S18, second side surface of the protective glass; IMA, imaging surface. DETAILED DESCRIPTION

[0092] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0093] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0094] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present invention.

[0095] It should be noted that in this specification, the terms "first," "second," "third," etc., are used solely to distinguish one feature from another and do not limit the features. Thus, the first lens discussed below could also be referred to as the second lens or the third lens without departing from the teachings of this application.

[0096] In the drawings, the thickness, size, and shape of the lenses are slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical and aspherical surfaces shown in the drawings are provided by way of example. That is, the shapes of the spherical and aspherical surfaces are not limited to those shown in the drawings. The drawings are for illustration only and are not drawn strictly to scale.

[0097] In this article, the paraxial area refers to the area 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 area; 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 area. The surface of each lens close to the object side is called the first side surface of the lens, and the surface of each lens close to the image side is called the second side surface of the lens. The judgment of the surface shape in the paraxial area can be based on the judgment method of ordinary knowledge in this field, and the positive and negative R value (R refers to the radius of curvature of the paraxial area, usually refers to the R value on the lens database (lens data) in the optical software) is used to judge the convexity and concavity. For the first side, when the R value is positive, it is judged to be convex, and when the R value is negative, it is judged to be concave; for the second side, when the R value is positive, it is judged to be concave, and when the R value is negative, it is judged to be convex.

[0098] This application generally protects an ordinary optical imaging lens. In the accompanying drawings, the left side is the object side and the right side is the image side, that is, the first side is the object side and the second side is the image side.

[0099] In an exemplary embodiment, the optical imaging lens provided by the present application can be used as, for example, a vehicle-mounted lens. Light from the object side can form an image on the image side.

[0100] When the optical imaging lens in this application is used in a projection lens or a radar transmitter lens, the left side is the imaging side, and the right side is the image source side. In exemplary embodiments, the optical imaging lens provided in this application can be used, for example, as a projection lens or a laser radar transmitter lens. In this case, the image side of the optical imaging lens can be the image source side, and the object side can be the imaging side. Light from the image source side can be imaged on the imaging side. The imaging surface of the optical imaging lens is the image source surface.

[0101] In order to solve the problem in the prior art that optical imaging lenses cannot simultaneously meet the requirements of a conventional horizontal field of view, a large vertical field of view, miniaturization, and high resolution, the present invention provides an optical imaging lens and an electronic device having the same.

[0102] Example 1

[0103] like Figures 1 to 12 As shown, the optical imaging lens has only two symmetry planes, namely the YZ plane and the XZ plane. The YZ plane and the XZ plane are perpendicular to each other and intersect at the optical axis Z. The optical imaging lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The first lens has negative optical power, and at least one of the first side surface of the first lens and the second side surface of the first lens is concave; the second lens has negative optical power, and the first side surface of the second lens is concave, and the second side surface of the second lens is convex; the third lens has positive optical power, and at least one of the first side surface of the third lens and the second side surface of the third lens is convex; the fourth lens has positive optical power, and the first side surface of the fourth lens is convex, and the second side surface of the fourth lens is convex; the fifth lens has optical power; the sixth lens has optical power, and at least one of the first side surface of the sixth lens and the second side surface of the sixth lens is concave; the seventh lens has positive optical power, and at least one of the first side surface of the seventh lens and the second side surface of the seventh lens is convex.

[0104] By setting the optical imaging lens in the form of a symmetrical plane of the XZ plane and the YZ plane, it is convenient to control the focal length in the XZ plane direction and the YZ plane direction, while ensuring the miniaturization of the optical imaging lens and having a large vertical field of view, it can also meet the conventional horizontal field of view, so that the horizontal field of view angle and the vertical field of view angle can be designed independently, and at the same time will not cause the optical imaging lens to be too large, thereby ensuring the imaging quality of the optical imaging lens.

[0105] By designing the first lens to have a negative optical power, it can diverge light, dispersing the central and peripheral rays of each field of view to expand the aperture and increase system illumination. The first lens is preferably made of a material with a high refractive index to further improve resolution quality, while also facilitating a reduction in the front port diameter and miniaturization of the optical imaging lens. By designing the second lens to have a negative optical power, it can diverge light, dispersing the central and peripheral rays of each field of view to expand the aperture and increase system illumination. It also facilitates correction of aberrations between the peripheral and central rays to achieve high resolution. The second lens can also be configured in a special shape similar to concentric circles, so that there is an optical path difference between the light around the second lens and the central ray, allowing the central ray to diverge and enter the rear optical system. This helps reduce the front port diameter of the optical imaging lens, reducing the size of the optical imaging lens and facilitating miniaturization and cost reduction of the optical imaging lens. At the same time, setting the second lens in a form of a first side concave and a second side convex is beneficial to diverging the light converged by the first lens, while reducing the deflection of light between the first lens and the second lens, so that the diverged light can smoothly enter the rear optical system.

[0106] Configuring the third lens to have positive optical power facilitates light convergence, allowing divergent light emitted by the second lens to converge and smoothly enter the rear optical system, thereby reducing the aperture and overall length of the optical imaging lens and facilitating miniaturization. Configuring the fourth lens to have positive optical power facilitates light convergence, allowing it to smoothly enter the rear optical system, while also facilitating reduction in the aperture and overall length of the optical imaging lens. Simultaneously, designing the fourth lens to have a biconvex shape can reduce light deflection at the first and second side surfaces of the fourth lens, thereby reducing the sensitivity of the optical imaging lens. Configuring the seventh lens to have positive optical power allows light to ultimately converge onto the imaging surface, effectively improving the astigmatism and field curvature of the optical imaging lens and enhancing the resolution of the optical system.

[0107] Optionally, the first side surface of the first lens is convex, and the second side surface of the first lens is concave. The first side surface of the first lens is convex in the YZ plane and also convex in the XZ plane. In other words, the first side surface of the first lens is not a saddle surface, which facilitates molding of the first lens. The second side surface of the first lens is concave, which can collect as much light as possible from a large field of view into the rear optical system, thereby achieving a wide field of view and ensuring the imaging quality of the optical imaging lens.

[0108] Of course, the first side surface of the first lens can also be configured as a saddle surface. For example, the first side surface of the first lens is concave in the YZ plane and convex in the XZ plane, while the second side surface of the second lens is also concave. The first side surface of the first lens has different concavities and convexities in the YZ plane and the XZ plane, forming a saddle surface. This configuration helps increase the difference in focal length between the XZ plane and the YZ plane, correcting asymmetric aberrations, particularly asymmetric field curvature, to achieve high resolution.

[0109] That is to say, the second side surface of the first lens is a concave surface, and the first side surface of the first lens can be a convex surface or a saddle surface, and can be designed according to actual needs.

[0110] Optionally, the first side surface of the third lens is convex, and the second side surface of the third lens is convex. If both the first side surface of the third lens and the second side surface of the third lens are convex, the deflection of light at the first and second side surfaces of the third lens can be reduced, which is beneficial for reducing the sensitivity of the optical imaging lens.

[0111] Of course, the first side surface of the third lens can also be convex, and the second side surface of the third lens can be concave. Setting the second side surface of the third lens to be concave facilitates the convergence of light emitted from the second lens via the first side surface of the third lens and then divergence via the second side surface of the third lens, effectively reducing spherical aberration and improving the resolution of the optical imaging lens.

[0112] That is to say, the first side surface of the third lens is a convex surface, and the second side surface of the third lens can be a convex surface or a concave surface, and can be designed according to actual needs.

[0113] Optionally, the fifth lens element has positive optical power, with the first and second side surfaces of the fifth lens element being convex and the second side surfaces of the fifth lens element being convex. Designing the fifth lens element with positive optical power ensures that it converges light, allowing it to converge more smoothly onto the imaging surface, thereby improving astigmatism and field curvature, and enhancing the resolution of the optical imaging system. In the case of a positive optical power fifth lens element, both the first and second side surfaces of the fifth lens element are convex, and the lens edge transition is smooth, ensuring that the emitted light, after converging, smoothly enters the rear, further ensuring a smooth transition of light to the image plane and reducing the sensitivity of the optical imaging lens.

[0114] Of course, the fifth lens element can also have negative optical power, with the first side surface of the fifth lens element being concave, and the second side surface of the fifth lens element being concave. By configuring the fifth lens element with negative optical power and a biconcave shape to diverge light, under the same field of view, the light emitted laterally through the fifth lens element can provide a larger light receiving surface for the subsequent optical imaging lens.

[0115] That is to say, the optical power of the fifth lens can be positive or negative, and the surface shape of the fifth lens can also be designed according to actual needs.

[0116] Optionally, the sixth lens element has negative optical power, and the first side surface of the sixth lens element is concave, and the second side surface of the sixth lens element is concave. By configuring the sixth lens element to have negative optical power and be biconcave, light can be diverged so that, under the same field of view, the light emitted through the second side surface of the sixth lens element can provide a larger light receiving surface for the subsequent optical system.

[0117] Of course, the sixth lens element can also have positive power, with the first side surface of the sixth lens element being convex and the second side surface of the sixth lens element being concave. By configuring the second side surface of the sixth lens element to be concave, its convex and concave surfaces are aligned with the first side surface of the seventh lens element and are relatively close to each other. This facilitates the rapid transition of light rays passing through the fifth and sixth lenses to the seventh lens element, thereby correcting aberrations such as distortion and field curvature, thereby improving resolution.

[0118] That is to say, the optical power of the sixth lens can be positive or negative, and the surface shape of the first side surface of the sixth lens can be convex or concave, which can be designed according to actual needs.

[0119] Optionally, the first side surface of the seventh lens is convex, and the second side surface of the seventh lens is convex. The second side surface of the seventh lens is convex in the YZ plane and also in the XZ plane. However, the focal length of the seventh lens in the XZ plane and the YZ plane may be different. In other words, the second side surface of the seventh lens is not a saddle surface, which facilitates molding of the seventh lens. Convexity of the first side surface of the seventh lens also facilitates light convergence onto the imaging plane.

[0120] Alternatively, the first side surface of the seventh lens element may be convex, while the second side surface of the seventh lens element may be concave in the YZ plane and convex in the XZ plane. The second side surface of the seventh lens element may have a different concave and convex shape in the YZ plane than in the XZ plane, forming a saddle surface. This configuration helps increase the difference in focal length between the XZ and YZ planes, correcting asymmetric aberrations, particularly asymmetric field curvature, to achieve high resolution.

[0121] The optical imaging lens in this application, when used with a conventional chip, can also have an ultra-large vertical field of view, while taking into account the advantages of miniaturization, small aperture, and high resolution, so that the optical imaging lens can be better used in automobile driving systems.

[0122] In this embodiment, the optical imaging lens further includes an aperture, which is disposed between the third lens element and the fourth lens element. This arrangement facilitates effective convergence of light entering the optical imaging lens element, reduces the lens aperture at the front end of the optical imaging lens element, and lowers the assembly sensitivity of the optical imaging lens element.

[0123] In this embodiment, the fifth lens and the sixth lens are cemented together to form a cemented lens. This arrangement allows for a smooth transition of light passing through the front lens to the rear optical system, reducing the overall length of the optical imaging lens. At the same time, various aberrations of the optical imaging lens are fully corrected to ensure imaging quality. While ensuring a compact structure, resolution can be improved, and optical properties such as distortion and CRA can be optimized. Furthermore, cementing the fifth and sixth lenses together reduces the air gap between the two lenses, thereby reducing the overall length of the optical imaging lens. It also complements the dispersion of the two lenses, helping to reduce chromatic aberration and improve imaging quality. This also reduces the use of separate components between the two lenses, reducing assembly steps and lowering costs. It also reduces field curvature and corrects off-axis point aberrations of the optical imaging lens. This also facilitates the rational allocation of the focal lengths of the fifth and sixth lenses, aiding in thermal compensation and achieving good temperature performance.

[0124] In this embodiment, the first lens and the seventh lens are free-form surface lenses. The first lens has different focal lengths along the XZ plane and the YZ plane, and the seventh lens has different focal lengths along the XZ plane and the YZ plane. The first lens is a free-form surface lens, and an appropriate focal length ratio can be set in the XZ plane direction and the YZ plane direction, so that the light entering the object side is quickly deflected to different degrees in the XZ plane direction and the YZ plane direction, contributing different distortions. The seventh lens is a free-form surface lens, and an appropriate focal length ratio can be set in the XZ plane direction and the YZ plane direction, so that the light entering the object side is quickly deflected to different degrees in the XZ plane direction and the YZ plane direction, resulting in a smaller vertical focal length. This achieves a large vertical field of view while maintaining the horizontal field of view angle. At the same time, asymmetric distortion, field curvature, and other aberrations introduced by the first lens are corrected to achieve high resolution.

[0125] It should be noted that, in this embodiment, the XZ plane direction is the horizontal direction, and the YZ plane direction is the vertical direction.

[0126] In this embodiment, the focal length Fx of the optical imaging lens along the XZ plane is different from the focal length Fy of the optical imaging lens along the YZ plane. By limiting the ratio of the horizontal and vertical focal lengths of the optical imaging lens to a reasonable range, the vertical focal length is reduced, thereby achieving a large vertical field of view while maintaining the same horizontal field of view. Preferably, 1 < Fx / Fy ≤ 1.6.

[0127] In this embodiment, the focal length F1x of the first lens along the XZ plane and the focal length F1y of the first lens along the YZ plane satisfy the following relationship: 1 < F1x / F1y ≤ 2. The first lens is a free-form surface lens, and the ratio of its horizontal focal length to its vertical focal length is limited to a reasonable range. This allows the object-side light to be rapidly deflected to varying degrees in the horizontal and vertical directions, while simultaneously reducing the vertical focal length. This achieves a large vertical field of view while maintaining a constant horizontal field of view. Preferably, 1 < F1x / F1y ≤ 1.6.

[0128] In this embodiment, the focal length F7x of the seventh lens element along the XZ plane and the focal length F7y of the seventh lens element along the YZ plane satisfy the following relationship: 1 < F7x / F7y ≤ 2. The seventh lens element is a free-form surface lens, and the ratio of its horizontal focal length to its vertical focal length is constrained within a reasonable range. This causes light entering the image side to be deflected to varying degrees in the horizontal and vertical directions, resulting in a smaller vertical focal length, thereby achieving a large vertical field of view while maintaining a constant horizontal field of view. Simultaneously, asymmetric distortion, field curvature, and other aberrations introduced by the first lens element are corrected to achieve high resolution. Preferably, 1 < F7x / F7y ≤ 1.6.

[0129] In this embodiment, the focal length F1x of the first lens element along the XZ plane satisfies the following relationship with the focal length Fx of the optical imaging lens element along the XZ plane: |F1x / Fx| ≥ 1. This configuration results in a long focal length for the first lens element, which helps to increase the difference between the horizontal and vertical focal lengths, resulting in a smaller vertical focal length for the optical imaging lens, thereby achieving a wide vertical field of view. Preferably, |F1x / Fx| ≥ 1.3.

[0130] In this embodiment, the focal length F1y of the first lens element along the YZ plane satisfies the following relationship with the focal length Fy of the optical imaging lens element along the YZ plane: |F1y / Fy| ≥ 1. This configuration results in a long focal length for the first lens element, which helps to increase the difference between the horizontal and vertical focal lengths, resulting in a smaller vertical focal length for the optical imaging lens, thereby achieving a wide vertical field of view. Preferably, |F1y / Fy| ≥ 1.3.

[0131] In this embodiment, the focal length F7x of the seventh lens element along the XZ plane satisfies the following relationship with the focal length Fx of the optical imaging lens along the XZ plane: |F7x / Fx| ≥ 1. This configuration results in a long focal length for the seventh lens element, which helps to increase the difference between the horizontal and vertical focal lengths, resulting in a smaller vertical focal length for the optical imaging lens, thereby achieving a wide vertical field of view. Preferably, |F7x / Fx| ≥ 1.3.

[0132] In this embodiment, the focal length F7y of the seventh lens element along the YZ plane satisfies the following relationship with the focal length Fy of the optical imaging lens along the YZ plane: |F7y / Fy| ≥ 1. This configuration provides the seventh lens element with a long focal length, which helps to increase the difference between the horizontal and vertical focal lengths, resulting in a smaller vertical focal length of the optical imaging lens, thereby achieving a wide vertical field of view. Preferably, |F7y / Fy| ≥ 1.3.

[0133] In this embodiment, the total optical length (TTL) of the optical imaging lens, the image height (Hx) in the XZ plane corresponding to the maximum field of view (FOV) of the optical imaging lens, and the maximum field of view (FOV) of the optical imaging lens in the XZ plane satisfy the following relationship: TTL / Hx / FOVx ≤ 0.08. By limiting TTL / Hx / FOVx to a reasonable range, the length of the optical imaging lens can be effectively limited under the same imaging plane and image height, facilitating miniaturization of the optical imaging lens. Preferably, TTL / Hx / FOVx ≤ 0.06.

[0134] It should be noted that in this article, the maximum field of view FOV of the optical imaging lens is associated with H, and the field of view angle corresponding to the image height is used. Similarly, FOVx and FOVy are also associated with H, and the field of view angle in that direction corresponding to the image height is used.

[0135] In this embodiment, the total optical length TTL of the optical imaging lens, the image height Hx in the XZ plane corresponding to the maximum field of view of the optical imaging lens, and the arc angle θx of the maximum field of view of the optical imaging lens in the XZ plane satisfy the following relationship: TTL / Hx / θx ≤ 5. By limiting TTL / Hx / θx to a reasonable range, the length of the optical imaging lens can be effectively limited under the same imaging plane and image height, facilitating miniaturization of the optical imaging lens. Preferably, TTL / Hx / θx ≤ 4.

[0136] In this embodiment, the radius of curvature L2R1 of the first side surface of the second lens, the radius of curvature L2R2 of the second side surface of the second lens, and the center thickness d2 of the second lens satisfy the following relationship: 0.6 ≤ L2R1 / (L2R2 + d2) ≤ 2. The shape of the second lens is approximately concentric. This special configuration of the second lens creates an optical path difference between the peripheral light and the central light, allowing the central light to diverge before entering the rear optical imaging lens. This configuration also reduces the front aperture and volume of the optical imaging lens, facilitating miniaturization and reducing the cost of the optical imaging lens. Preferably, 0.8 ≤ L2R1 / (L2R2 + d2) ≤ 1.7.

[0137] In this embodiment, the clear aperture Dx of the first side surface of the first lens in the XZ plane corresponding to the maximum field of view of the optical imaging lens, the image height Hx in the XZ plane corresponding to the maximum field of view of the optical imaging lens, and the maximum field of view FOVx of the optical imaging lens in the XZ plane satisfy the following relationship: Dx / Hx / FOVx ≤ 0.05. By limiting Dx / Hx / FOVx to a reasonable range, the front aperture can be kept within a small range, thereby ensuring the miniaturization of the optical imaging lens. Preferably, Dx / Hx / FOVx ≤ 0.03.

[0138] In this embodiment, the clear aperture Dx of the first side surface of the first lens in the XZ plane corresponding to the maximum field of view of the optical imaging lens, the image height Hx in the XZ plane corresponding to the maximum field of view of the optical imaging lens, and the arc length θx of the maximum field of view of the optical imaging lens in the XZ plane satisfy the following relationship: Dx / Hx / θx ≤ 3. By limiting Dx / Hx / θx to a reasonable range, the front port diameter can be kept within a small range, thereby ensuring the miniaturization of the optical imaging lens. Preferably, Dx / Hx / θx ≤ 1.7.

[0139] In this embodiment, the optical imaging lens satisfies the following relationship: Dx / Hx / Fx ≤ 0.55: the clear aperture Dx of the first side surface of the first lens in the XZ plane corresponding to the maximum field of view of the optical imaging lens, the image height Hx in the XZ plane corresponding to the maximum field of view of the optical imaging lens, and the focal length Fx of the optical imaging lens along the XZ plane. By limiting Dx / Hx / Fx to a reasonable range, the optical imaging lens can achieve the advantages of a large image area and a small aperture while maintaining a fixed focal length, facilitating miniaturization of the optical imaging lens. Preferably, Dx / Hx / Fx ≤ 0.45.

[0140] In this embodiment, the distance d67 between the sixth and seventh lenses satisfies the following relationship with the total optical length (TTL) of the optical imaging lens: d67 / TTL ≤ 0.08. This arrangement reduces the distance between the sixth and seventh lenses, allowing light rays passing through the sixth lens to quickly transition to the seventh lens, correcting aberrations such as distortion and field curvature, thereby improving image resolution and enabling the optical imaging lens to achieve high resolution. Preferably, d67 / TTL ≤ 0.06.

[0141] In this embodiment, the distance BFL from the center of the second side surface of the last lens element of the optical imaging lens to the center of the imaging plane of the optical imaging lens satisfies the following relationship: BFL / TTL ≥ 0.06. By limiting BFL / TTL to a reasonable range, the back focal length of the optical imaging lens is maintained while miniaturization is achieved, facilitating module assembly. Furthermore, extending the back focal length helps reduce the energy of ghost images generated by reflections from the center of the lens and color filter. Preferably, BFL / TTL ≥ 0.08.

[0142] In this embodiment, the maximum field of view (FOVx) of the optical imaging lens in the XZ plane, the focal length (Fx) of the optical imaging lens along the XZ plane, and the image height (Hx) in the XZ plane corresponding to the maximum field of view of the optical imaging lens satisfy the following relationship: (FOVx × Fx) / Hx ≥ 50. By limiting (FOVx × Fx) / Hx to a reasonable range, the optical imaging lens in this embodiment has a larger field of view at the same imaging plane and image height. Preferably, (FOVx × Fx) / Hx ≥ 53.

[0143] In this embodiment, the radius of curvature L1R2 of the first side surface of the first lens element and the focal length Fx of the optical imaging lens along the XZ plane satisfy the following relationship: L1R2 / Fx ≤ 3. By limiting L1R2 / Fx to a reasonable range, the radius of curvature of the first side surface of the first lens element is kept within a smaller range, which helps the optical imaging lens quickly converge light rays at large angles. Preferably, L1R2 / Fx ≤ 2.

[0144] Example 2

[0145] like Figures 1 to 12 As shown, the optical imaging lens has only two symmetry planes, namely the YZ plane and the XZ plane. The YZ plane and the XZ plane are perpendicular to each other and intersect at the optical axis Z. The optical imaging lens includes: a first lens, the first lens has negative optical focal power; a second lens, the second lens has negative optical focal power; a third lens, the third lens has positive optical focal power; a fourth lens, the fourth lens has positive optical focal power; a fifth lens, the fifth lens has optical focal power; a sixth lens, the sixth lens has optical focal power; and a seventh lens, the seventh lens has positive optical focal power. The focal length Fx of the optical imaging lens along the XZ plane direction is different from the focal length Fy of the optical imaging lens along the YZ plane direction.

[0146] By setting the optical imaging lens in the form of a symmetrical plane of the XZ plane and the YZ plane, it is convenient to control the focal length in the XZ plane direction and the YZ plane direction, while ensuring the miniaturization of the optical imaging lens and having a large vertical field of view, it can also meet the conventional horizontal field of view, so that the horizontal field of view angle and the vertical field of view angle can be designed independently, and at the same time will not cause the optical imaging lens to be too large, thereby ensuring the imaging quality of the optical imaging lens.

[0147] By designing the first lens to have a negative optical power, it can diverge light, dispersing the central and peripheral rays of each field of view to expand the aperture and increase system illumination. The first lens is preferably made of a material with a high refractive index to further improve resolution quality, while also facilitating a reduction in the front port diameter and miniaturization of the optical imaging lens. By designing the second lens to have a negative optical power, it can diverge light, dispersing the central and peripheral rays of each field of view to expand the aperture and increase system illumination. It also facilitates correction of aberrations between the peripheral and central rays to achieve high resolution. The second lens can also be configured in a special shape similar to concentric circles, so that there is an optical path difference between the light around the second lens and the central ray, allowing the central ray to diverge and enter the rear optical system. This helps reduce the front port diameter of the optical imaging lens, reducing the size of the optical imaging lens and facilitating miniaturization and cost reduction of the optical imaging lens. At the same time, the second lens is set to have a first side concave and a second side convex form, which is beneficial for diverging the light converged by the first lens and reducing the deflection of light between the first lens and the second lens, so that the diverged light can smoothly enter the rear optical system.

[0148] Configuring the third lens with positive optical power facilitates light convergence, allowing divergent light rays emitted by the second lens to converge and smoothly enter the rear optical system, thereby reducing the aperture and overall length of the optical imaging lens and facilitating miniaturization. Configuring the fourth lens with positive optical power also facilitates light convergence, allowing for smooth entry into the rear optical system, while also reducing the aperture and overall length of the optical imaging lens. Designing the fourth lens with a biconvex structure reduces light deflection at the first and second side surfaces of the fourth lens, thereby reducing the sensitivity of the optical imaging lens. Configuring the seventh lens with positive optical power allows light rays to converge onto the imaging plane, effectively improving astigmatism and field curvature of the optical imaging lens and enhancing the resolution of the optical system. By limiting the Fx / Fy ratio to a reasonable range, the ratio of the horizontal to vertical focal lengths of the optical imaging lens is also limited, reducing the vertical focal length and thus achieving a large vertical field of view while maintaining the same horizontal field of view. Preferably, 1 < Fx / Fy ≤ 1.6.

[0149] Optionally, the first side surface of the first lens is convex, and the second side surface of the first lens is concave. The first side surface of the first lens is convex in the YZ plane and convex in the XZ plane. In other words, the first side surface of the first lens is not a saddle surface, which facilitates molding of the first lens. The second side surface of the first lens is concave, which can collect as much light as possible from a large field of view into the rear optical system, thereby achieving a wide field of view and ensuring the imaging quality of the optical imaging lens.

[0150] Of course, the first side surface of the first lens can also be configured as a saddle surface. For example, the first side surface of the first lens is concave in the YZ plane and convex in the XZ plane, while the second side surface of the second lens is also concave. The first side surface of the first lens has different concavities and convexities in the YZ plane and the XZ plane, forming a saddle surface. This configuration helps increase the difference in focal length between the XZ plane and the YZ plane, correcting asymmetric aberrations, particularly asymmetric field curvature, to achieve high resolution.

[0151] That is to say, the second side surface of the first lens is a concave surface, and the first side surface of the first lens can be a convex surface or a saddle surface, and can be designed according to actual needs.

[0152] Optionally, the first side surface of the third lens is convex, and the second side surface of the third lens is convex. If both the first side surface of the third lens and the second side surface of the third lens are convex, the deflection of light at the first and second side surfaces of the third lens can be reduced, which is beneficial for reducing the sensitivity of the optical imaging lens.

[0153] Of course, the first side surface of the third lens can also be convex, and the second side surface of the third lens can be concave. Setting the second side surface of the third lens to be concave facilitates the convergence of light emitted from the second lens via the first side surface of the third lens and then divergence via the second side surface of the third lens, effectively reducing spherical aberration and improving the resolution of the optical imaging lens.

[0154] That is to say, the first side surface of the third lens is a convex surface, and the second side surface of the third lens can be a convex surface or a concave surface, and can be designed according to actual needs.

[0155] Optionally, the fifth lens element has positive optical power, with the first and second side surfaces of the fifth lens element being convex and the second side surfaces of the fifth lens element being convex. Designing the fifth lens element with positive optical power ensures that it converges light, allowing it to converge more smoothly onto the imaging surface, thereby improving astigmatism and field curvature, and enhancing the resolution of the optical imaging system. In the case of a positive optical power fifth lens element, both the first and second side surfaces of the fifth lens element are convex, and the lens edge transition is smooth, ensuring that the emitted light, after converging, smoothly enters the rear, further ensuring a smooth transition of light to the image plane and reducing the sensitivity of the optical imaging lens.

[0156] Of course, the fifth lens element can also have negative optical power, with the first side surface of the fifth lens element being concave, and the second side surface of the fifth lens element being concave. By configuring the fifth lens element with negative optical power and a biconcave shape to diverge light, under the same field of view, the light emitted laterally through the fifth lens element can provide a larger light receiving surface for the subsequent optical imaging lens.

[0157] That is to say, the optical power of the fifth lens can be positive or negative, and the surface shape of the fifth lens can also be designed according to actual needs.

[0158] Optionally, the sixth lens element has negative optical power, and the first side surface of the sixth lens element is concave, and the second side surface of the sixth lens element is concave. By configuring the sixth lens element to have negative optical power and be biconcave, light can be diverged so that, under the same field of view, the light emitted through the second side surface of the sixth lens element can provide a larger light receiving surface for the subsequent optical system.

[0159] Of course, the sixth lens element can also have positive power, with the first side surface of the sixth lens element being convex and the second side surface of the sixth lens element being concave. By configuring the second side surface of the sixth lens element to be concave, its convex and concave surfaces are aligned with the first side surface of the seventh lens element and are relatively close to each other. This facilitates the rapid transition of light rays passing through the fifth and sixth lenses to the seventh lens element, thereby correcting aberrations such as distortion and field curvature, thereby improving resolution.

[0160] That is to say, the optical power of the sixth lens can be positive or negative, and the surface shape of the first side surface of the sixth lens can be convex or concave, which can be designed according to actual needs.

[0161] Optionally, the first side surface of the seventh lens is convex, and the second side surface of the seventh lens is convex. The second side surface of the seventh lens is convex in the YZ plane and also in the XZ plane. In other words, the second side surface of the seventh lens is not a saddle surface, which facilitates molding of the seventh lens. Furthermore, setting the first side surface of the seventh lens as a convex surface facilitates light convergence onto the imaging plane.

[0162] Alternatively, the first side surface of the seventh lens element may be convex, while the second side surface of the seventh lens element may be concave in the YZ plane and convex in the XZ plane. The second side surface of the seventh lens element may have a different concave and convex shape in the YZ plane than in the XZ plane, forming a saddle surface. This configuration helps increase the difference in focal length between the XZ and YZ planes, correcting asymmetric aberrations, particularly asymmetric field curvature, to achieve high resolution.

[0163] The optical imaging lens in this application, when used with a conventional chip, can also have an ultra-large vertical field of view, while taking into account the advantages of miniaturization, small aperture, and high resolution, so that the optical imaging lens can be better used in automobile driving systems.

[0164] In this embodiment, the optical imaging lens further includes an aperture, which is disposed between the third lens element and the fourth lens element. This arrangement facilitates effective convergence of light entering the optical imaging lens element, reduces the lens aperture at the front end of the optical imaging lens element, and lowers the assembly sensitivity of the optical imaging lens element.

[0165] In this embodiment, the fifth lens and the sixth lens are cemented together to form a cemented lens. This arrangement allows for a smooth transition of light passing through the front lens to the rear optical system, reducing the overall length of the optical imaging lens. At the same time, various aberrations of the optical imaging lens are fully corrected to ensure imaging quality. While ensuring a compact structure, resolution can be improved, and optical properties such as distortion and CRA can be optimized. Furthermore, cementing the fifth and sixth lenses together reduces the air gap between the two lenses, thereby reducing the overall length of the optical imaging lens. It also complements the dispersion of the two lenses, helping to reduce chromatic aberration and improve imaging quality. This also reduces the use of separate components between the two lenses, reducing assembly steps and lowering costs. It also reduces field curvature and corrects off-axis point aberrations of the optical imaging lens. This also facilitates the rational allocation of the focal lengths of the fifth and sixth lenses, aiding in thermal compensation and achieving good temperature performance.

[0166] In this embodiment, the first lens and the seventh lens are free-form surface lenses, and the focal lengths of the first lens along the XZ plane and the YZ plane are different, and the focal lengths of the seventh lens along the XZ plane and the YZ plane are different. The first lens is a free-form surface lens, and an appropriate focal length ratio can be set in the XZ plane direction and the YZ plane direction, so that the light entering the object side is quickly deflected to different degrees in the XZ plane direction and the YZ plane direction, contributing different distortions. The seventh lens is a free-form surface lens, and an appropriate focal length ratio can be set in the XZ plane direction and the YZ plane direction, so that the light entering the object side is quickly deflected to different degrees in the XZ plane direction and the YZ plane direction, making the vertical focal length smaller, thereby achieving a large vertical field of view while maintaining the horizontal field of view angle. At the same time, asymmetric distortion, field curvature and other aberrations introduced by the first lens are corrected to achieve high resolution.

[0167] It should be noted that, in this embodiment, the XZ plane direction is the horizontal direction, and the YZ plane direction is the vertical direction.

[0168] In this embodiment, the focal length F1x of the first lens along the XZ plane and the focal length F1y of the first lens along the YZ plane satisfy the following relationship: 1 < F1x / F1y ≤ 2. The first lens is a free-form surface lens, and the ratio of its horizontal focal length to its vertical focal length is limited to a reasonable range. This allows the object-side light to be rapidly deflected to varying degrees in the horizontal and vertical directions, while simultaneously reducing the vertical focal length. This achieves a large vertical field of view while maintaining a constant horizontal field of view. Preferably, 1 < F1x / F1y ≤ 1.6.

[0169] In this embodiment, the focal length F7x of the seventh lens element along the XZ plane and the focal length F7y of the seventh lens element along the YZ plane satisfy the following relationship: 1 < F7x / F7y ≤ 2. The seventh lens element is a free-form surface lens, and the ratio of its horizontal focal length to its vertical focal length is constrained within a reasonable range. This causes light entering the image side to be deflected to varying degrees in the horizontal and vertical directions, resulting in a smaller vertical focal length, thereby achieving a large vertical field of view while maintaining a constant horizontal field of view. Simultaneously, asymmetric distortion, field curvature, and other aberrations introduced by the first lens element are corrected to achieve high resolution. Preferably, 1 < F7x / F7y ≤ 1.6.

[0170] In this embodiment, the focal length F1x of the first lens element along the XZ plane satisfies the following relationship with the focal length Fx of the optical imaging lens element along the XZ plane: |F1x / Fx| ≥ 1. This configuration results in a long focal length for the first lens element, which helps to increase the difference between the horizontal and vertical focal lengths, resulting in a smaller vertical focal length for the optical imaging lens, thereby achieving a wide vertical field of view. Preferably, |F1x / Fx| ≥ 1.3.

[0171] In this embodiment, the focal length F1y of the first lens element along the YZ plane satisfies the following relationship with the focal length Fy of the optical imaging lens element along the YZ plane: |F1y / Fy| ≥ 1. This configuration results in a long focal length for the first lens element, which helps to increase the difference between the horizontal and vertical focal lengths, resulting in a smaller vertical focal length for the optical imaging lens, thereby achieving a wide vertical field of view. Preferably, |F1y / Fy| ≥ 1.3.

[0172] In this embodiment, the focal length F7x of the seventh lens element along the XZ plane satisfies the following relationship with the focal length Fx of the optical imaging lens along the XZ plane: |F7x / Fx| ≥ 1. This configuration results in a long focal length for the seventh lens element, which helps to increase the difference between the horizontal and vertical focal lengths, resulting in a smaller vertical focal length for the optical imaging lens, thereby achieving a wide vertical field of view. Preferably, |F7x / Fx| ≥ 1.3.

[0173] In this embodiment, the focal length F7y of the seventh lens element along the YZ plane satisfies the following relationship with the focal length Fy of the optical imaging lens along the YZ plane: |F7y / Fy| ≥ 1. This configuration provides the seventh lens element with a long focal length, which helps to increase the difference between the horizontal and vertical focal lengths, resulting in a smaller vertical focal length of the optical imaging lens, thereby achieving a wide vertical field of view. Preferably, |F7y / Fy| ≥ 1.3.

[0174] In this embodiment, the total optical length (TTL) of the optical imaging lens, the image height (Hx) in the XZ plane corresponding to the maximum field of view (FOV) of the optical imaging lens, and the maximum field of view (FOV) of the optical imaging lens in the XZ plane satisfy the following relationship: TTL / Hx / FOVx ≤ 0.08. By limiting TTL / Hx / FOVx to a reasonable range, the length of the optical imaging lens can be effectively limited under the same imaging plane and image height, facilitating miniaturization of the optical imaging lens. Preferably, TTL / Hx / FOVx ≤ 0.06.

[0175] In this embodiment, the total optical length TTL of the optical imaging lens, the image height Hx in the XZ plane corresponding to the maximum field of view of the optical imaging lens, and the arc angle θx of the maximum field of view of the optical imaging lens in the XZ plane satisfy the following relationship: TTL / Hx / θx ≤ 5. By limiting TTL / Hx / θx to a reasonable range, the length of the optical imaging lens can be effectively limited under the same imaging plane and image height, facilitating miniaturization of the optical imaging lens. Preferably, TTL / Hx / θx ≤ 4.

[0176] In this embodiment, the radius of curvature L2R1 of the first side surface of the second lens, the radius of curvature L2R2 of the second side surface of the second lens, and the center thickness d2 of the second lens satisfy the following relationship: 0.6 ≤ L2R1 / (L2R2 + d2) ≤ 2. The shape of the second lens is approximately concentric. This special configuration of the second lens creates an optical path difference between the peripheral light and the central light, allowing the central light to diverge before entering the rear optical imaging lens. This configuration also reduces the front aperture and volume of the optical imaging lens, facilitating miniaturization and reducing the cost of the optical imaging lens. Preferably, 0.8 ≤ L2R1 / (L2R2 + d2) ≤ 1.7.

[0177] In this embodiment, the clear aperture Dx of the first side surface of the first lens in the XZ plane corresponding to the maximum field of view of the optical imaging lens, the image height Hx in the XZ plane corresponding to the maximum field of view of the optical imaging lens, and the maximum field of view FOVx of the optical imaging lens in the XZ plane satisfy the following relationship: Dx / Hx / FOVx ≤ 0.05. By limiting Dx / Hx / FOVx to a reasonable range, the front aperture can be kept within a small range, thereby ensuring the miniaturization of the optical imaging lens. Preferably, Dx / Hx / FOVx ≤ 0.03.

[0178] In this embodiment, the clear aperture Dx of the first side surface of the first lens in the XZ plane corresponding to the maximum field of view of the optical imaging lens, the image height Hx in the XZ plane corresponding to the maximum field of view of the optical imaging lens, and the arc length θx of the maximum field of view of the optical imaging lens in the XZ plane satisfy the following relationship: Dx / Hx / θx ≤ 3. By limiting Dx / Hx / θx to a reasonable range, the front port diameter can be kept within a small range, thereby ensuring the miniaturization of the optical imaging lens. Preferably, Dx / Hx / θx ≤ 1.7.

[0179] In this embodiment, the clear aperture Dx of the first side surface of the first lens in the XZ plane corresponding to the maximum field of view of the optical imaging lens, the image height Hx in the XZ plane corresponding to the maximum field of view of the optical imaging lens, and the focal length Fx of the optical imaging lens in the XZ plane satisfy the following relationship: Dx / Hx / Fx ≤ 0.55. By limiting Dx / Hx / Fx to a reasonable range, the optical imaging lens can achieve the advantages of a large image area and a small aperture while maintaining a fixed focal length, facilitating miniaturization of the optical imaging lens. Preferably, Dx / Hx / Fx ≤ 0.45.

[0180] In this embodiment, the distance d67 between the sixth and seventh lenses satisfies the following relationship with the total optical length (TTL) of the optical imaging lens: d67 / TTL ≤ 0.08. This arrangement reduces the distance between the sixth and seventh lenses, allowing light rays passing through the sixth lens to quickly transition to the seventh lens, correcting aberrations such as distortion and field curvature, thereby improving image resolution and enabling the optical imaging lens to achieve high resolution. Preferably, d67 / TTL ≤ 0.06.

[0181] In this embodiment, the distance BFL from the center of the second side surface of the last lens element of the optical imaging lens to the center of the imaging plane of the optical imaging lens satisfies the following relationship: BFL / TTL ≥ 0.06. By limiting BFL / TTL to a reasonable range, the back focal length of the optical imaging lens is maintained while miniaturization is achieved, facilitating module assembly. Furthermore, extending the back focal length helps reduce the energy of ghost images generated by reflections from the center of the lens and color filter. Preferably, BFL / TTL ≥ 0.08.

[0182] In this embodiment, the maximum field of view (FOVx) of the optical imaging lens in the XZ plane, the focal length (Fx) of the optical imaging lens in the XZ plane, and the image height (Hx) in the XZ plane corresponding to the maximum field of view of the optical imaging lens satisfy the following relationship: (FOVx × Fx) / Hx ≥ 50. By limiting (FOVx × Fx) / Hx to a reasonable range, the optical imaging lens in this embodiment has a larger field of view at the same imaging plane and image height. Preferably, (FOVx × Fx) / Hx ≥ 53.

[0183] In this embodiment, the radius of curvature L1R2 of the first side surface of the first lens element satisfies the following relationship with the focal length Fx of the optical imaging lens along the XZ plane: L1R2 / Fx ≤ 3. By limiting L1R2 / Fx to a reasonable range, the radius of curvature of the first side surface of the first lens element is kept within a smaller range, which helps the optical imaging lens quickly converge light rays at large angles. Preferably, L1R2 / Fx ≤ 2.

[0184] Optionally, the optical imaging lens may further include a filter for correcting color deviation and a protective glass for protecting the photosensitive element located on the imaging surface.

[0185] The optical imaging lens in this application may utilize multiple lenses, such as the seven lenses described above. In this application, at least one of the lens surfaces is an aspherical surface. Aspherical lenses are characterized by a continuously varying curvature from the center to the periphery. Unlike spherical lenses, which have a constant curvature from the center to the periphery, aspherical lenses have a better curvature radius characteristic, with the advantages of improving distortion and astigmatism. The use of aspherical lenses can minimize aberrations that occur during imaging, thereby improving image quality.

[0186] In an exemplary embodiment, the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens may all be glass lenses. Optical lenses made of glass can suppress the deviation of the back focus of the optical imaging lens due to temperature changes, thereby improving system stability. At the same time, the use of glass material can avoid lens imaging blur caused by high and low temperature changes in the use environment, which affects the normal use of the lens. For example, an optical imaging lens with an all-glass design has a wide temperature range and can maintain stable optical performance in the range of -40°C to 105°C. Specifically, when the focus is on resolution quality and reliability, the first lens to the seventh lens can all be glass aspherical lenses. Of course, in applications where temperature stability requirements are lower, the first lens to the seventh lens in the optical imaging lens can also be made of plastic. Making optical lenses out of plastic can effectively reduce production costs. Of course, the first lens to the seventh lens in the optical imaging lens can also be made of a combination of plastic and glass.

[0187] The present application also provides an electronic device comprising the optical imaging lens described above and an imaging element for converting an optical image formed by the optical imaging lens into an electrical signal. The imaging element may be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS). The electronic device may be a standalone imaging device such as a digital camera, or an imaging module integrated into a mobile electronic device such as a mobile phone. The electronic device is equipped with the optical imaging lens described above.

[0188] However, those skilled in the art will appreciate that the number of lenses comprising the optical imaging lens can be varied to achieve the various results and advantages described herein without departing from the claimed technical solutions. For example, while the embodiments describe an optical imaging lens using seven lenses as an example, the optical imaging lens is not limited to including seven lenses. If desired, the optical imaging lens may also include other numbers of lenses.

[0189] The following further describes examples of specific surface shapes and parameters of the optical imaging lens applicable to the above-mentioned embodiments with reference to the accompanying drawings.

[0190] It should be noted that any one of the following examples 1 to 6 is applicable to all embodiments of the present application.

[0191] Example 1

[0192] like Figure 1 FIG1 shows a cross-sectional view of the optical imaging lens of Example 1 in the YZ plane. Figure 2 A cross-sectional view of the optical imaging lens of Example 1 in the XZ plane is shown.

[0193] like Figure 1As shown, the optical imaging lens includes, from the object side to the image side, a first lens L1, a second lens L2, a third lens L3, an aperture STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter L8, a first side surface S17 of the protective glass, a second side surface S18 of the protective glass, and an imaging surface IMA.

[0194] The first lens L1 has negative optical power, with its first side surface S1 being convex and its second side surface S2 being concave. The second lens L2 has negative optical power, with its first side surface S3 being concave and its second side surface S4 being convex. The third lens L3 has positive optical power, with its first side surface S5 being convex and its second side surface S6 being convex. The fourth lens L4 has positive optical power, with its first side surface S8 being convex and its second side surface S9 being convex. The fifth lens L5 has positive optical power, with its first side surface S10 being convex and its second side surface S11 being convex. The sixth lens L6 has negative optical power, with its first side surface S11 being concave and its second side surface S12 being concave. The seventh lens L7 has positive optical power, with its first side surface S13 being convex and its second side surface S14 being convex. The filter L8 has a first side surface S15 and a second side surface S16. Light from the object passes through the surfaces S1 to S18 in sequence and is finally imaged on the molding surface IMA.

[0195] In this example, the focal length Fx of the optical imaging lens in the XZ plane is 4.878mm, the focal length Fy of the optical imaging lens in the YZ plane is 4.163mm, the maximum field of view FOVx of the optical imaging lens in the XZ plane is 100°, the maximum field of view FOVy of the optical imaging lens in the YZ plane is 70°, and the total length (TTL) of the optical imaging lens is 30.720mm. The fifth and sixth lenses are cemented lenses, so the second side surface of the fifth lens and the first side surface of the sixth lens are both S11. However, since the first and second side surfaces have different surface shapes even though the radius of curvature is the same, the second side surface S11 of the fifth lens is convex, and the first side surface S11 of the sixth lens is concave.

[0196] Table 1 shows the basic structural parameters of the optical imaging lens of Example 1, where the units of curvature radius and thickness / distance are all millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity represents infinity.

[0197] Surf Radius Thickness Nd Vd 1 \ 1.400 1.81 41.00 2 4.745 4.168 3 -6.553 4.800 1.81 41.00 4 -10.455 0.100 5 13.366 2.500 1.80 46.60 6 -47.809 3.293 STO Infinity -0.250 8 10.287 3.450 1.62 63.40 9 -16.650 0.100 10 13.054 2.370 1.50 81.60 11 -5.795 1.200 1.85 23.80 12 7.553 0.448 13 \ 3.540 1.68 31.10 14 \ 0.400 15 Infinity 0.500 1.52 64.20 16 Infinity 2.075 17 Infinity 0.500 1.52 64.20 18 Infinity 0.125 IMA Infinity 0.000

[0198] Table 1

[0199] In Example 1, the first and second side surfaces of some of the lenses in the first lens L1 to the seventh lens L7 have aspheric surfaces. The surface shape of each aspheric lens can be defined by, but not limited to, the following aspheric surface formula:

[0200]

[0201] Where x is the distance vector from the vertex of the aspheric surface at a height of h along the optical axis; c is the paraxial curvature of the aspheric surface, c = 1 / R (i.e., the paraxial curvature c is the reciprocal of the radius of curvature R in Table 1 above); k is the conic coefficient; and A is the higher-order coefficient. Table 2 below shows the conic coefficient k and the higher-order coefficients A (4th-order coefficient), B (6th-order coefficient), C (8th-order coefficient), D (10th-order coefficient), E (12th-order coefficient), F (14th-order coefficient), and G (16th-order coefficient) that can be used for the aspheric lens surfaces S2, S3, and S4 in Example 1.

[0202] Surf K A B C D E F G 2 -0.2652 -1.9975E-04 -2.2037E-05 2.7572E-06 -2.9205E-07 1.3269E-08 -2.17E-10 0.00E+00 3 0.3213 1.2065E-04 4.9458E-07 -3.0364E-07 6.4244E-08 -5.4468E-09 3.7683E-10 -8.7921E-12 4 -1.3632 -6.1197E-05 -3.5989E-07 4.5113E-07 -4.5789E-08 2.9855E-09 -9.2029E-11 1.1468E-12

[0203] Table 2

[0204] In this embodiment, the first side surfaces and the second side surfaces of some of the lenses in the first lens element L1 to the seventh lens element L7 are free-form surfaces. The surface shape of the free-form surface lens can be defined by, but is not limited to, the following free-form surface formula:

[0205]

[0206] Z is the distance from the free-form surface vertex to the free-form surface when the free-form surface is located at the spatial coordinates X, Y along the optical axis; C x ,C y is the paraxial curvature of the free-form surface, C = 1 / R (i.e., the paraxial curvature C is the reciprocal of the curvature radius R); K x , K y is the cone coefficient; AR, BR, CR, DR, AP, BP, CP, and DP are all higher-order coefficients. It should be noted that only a few higher-order coefficients are listed in formula (2). In fact, there are also higher-order coefficients such as ER, FR, and GR than DR, and higher-order coefficients such as EP, FP, and GP than DP, which are not fully listed here.

[0207] Table 3 below shows the paraxial curvature C of the free-form surfaces S1, S13, and S14 that can be used in Example 1. x 、C y , cone coefficient K x , K y And the coefficients of higher-order terms AR, BR, CR, DR, ER, FR, GR, and HR.

[0208] Surf <![CDATA[C x ]]> <![CDATA[C y ]]> <![CDATA[K x ]]> <![CDATA[K y ]]> AR BR 1 5.0784E-02 1.7144E-02 -2.0000E+01 -2.0000E+02 -1.4901E-04 -3.4380E-06 13 1.0597E-01 1.4996E-01 -3.3744E-01 6.2519E-01 -1.0651E-03 1.8048E-05 14 -4.0723E-02 -5.6853E-03 -5.7059E+01 8.2470E+01 -7.7949E-04 7.2624E-07 Surf CR DR ER FR GR HR 1 9.0636E-08 3.4611E-09 -1.1028E-10 -7.4028E-13 2.9125E-14 3.8843E-16 13 -4.3453E-06 6.7374E-07 -7.9003E-08 4.3502E-09 -9.3082E-11 2.9165E-13 14 -4.3996E-06 4.9385E-07 -3.1130E-08 8.2111E-10 -6.2435E-12 9.7211E-16

[0209] Table 3

[0210] Table 4 below shows the coefficients of higher-order terms AP, BP, CP, DP, EP, FP, GP, and HP that can be used in the free-form surfaces S1, S13, and S14 in Example 1.

[0211] Surf AP BP CP DP EP FP GP HP 1 4.3946E-01 1.1970E-01 3.3923E-02 6.1671E-01 6.8884E-01 1.7277E-01 9.0708E-01 4.1915E-01 13 6.7223E-02 2.4580E-01 3.0567E-01 2.0587E-01 -7.3829E-02 2.7236E-02 -5.3705E-02 -3.9795E-01 14 -4.2024E-01 -1.4255E+00 2.8996E-01 2.4509E-01 1.4928E-01 7.3307E-02 5.0240E-02 -7.2092E-01

[0212] Table 4

[0213] Example 2

[0214] like Figure 3 FIG2 shows a cross-sectional view of the optical imaging lens of Example 2 in the YZ plane. Figure 4 A cross-sectional view of the optical imaging lens of Example 2 in the XZ plane is shown. In this example and the following examples, for the sake of brevity, some descriptions similar to Example 1 will be omitted.

[0215] like Figure 3 and Figure 4 As shown, the optical imaging lens includes, from the object side to the image side, a first lens L1, a second lens L2, a third lens L3, an aperture STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter L8, a first side surface S17 of the protective glass, a second side surface S18 of the protective glass, and an imaging surface IMA.

[0216] The first lens L1 has negative optical power, with its first side surface S1 being convex and its second side surface S2 being concave. The second lens L2 has negative optical power, with its first side surface S3 being concave and its second side surface S4 being convex. The third lens L3 has positive optical power, with its first side surface S5 being convex and its second side surface S6 being convex. The fourth lens L4 has positive optical power, with its first side surface S8 being convex and its second side surface S9 being convex. The fifth lens L5 has positive optical power, with its first side surface S10 being convex and its second side surface S11 being convex. The sixth lens L6 has negative optical power, with its first side surface S11 being concave and its second side surface S12 being concave. The seventh lens L7 has positive optical power, with its first side surface S13 being convex and its second side surface S14 being convex. The filter L8 has a first side surface S15 and a second side surface S16. Light from the object passes through the surfaces S1 to S18 in sequence and is finally imaged on the molding surface IMA.

[0217] In this example, the focal length Fx of the optical imaging lens in the XZ plane is 5.075mm, the focal length Fy of the optical imaging lens in the YZ plane is 4.448mm, the maximum field of view FOVx of the optical imaging lens in the XZ plane is 100°, the maximum field of view FOVy of the optical imaging lens in the YZ plane is 90°, and the total length (TTL) of the optical imaging lens is 30.720mm. The fifth and sixth lenses are cemented lenses, so the second side surface of the fifth lens and the first side surface of the sixth lens are both S11. However, since the first and second side surfaces have different surface shapes even though the radius of curvature is the same, the second side surface S11 of the fifth lens is convex, and the first side surface S11 of the sixth lens is concave.

[0218] Table 5 shows the basic structural parameters of the optical imaging lens of Example 2, where the units of curvature radius and thickness / distance are all millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity represents infinity.

[0219]

[0220]

[0221] Table 5

[0222] Table 6 below shows the conic coefficient k and the coefficients of the higher-order terms that can be used for the aspherical lens surfaces S2, S3, and S4 in Example 2.

[0223] Surf K A B C D E F G 2 -0.1621 4.0656E-05 -1.0322E-05 1.3163E-07 -7.9839E-09 -3.2688E-10 0.00E+00 0.00E+00 3 0.7407 6.4834E-04 -5.7319E-07 2.9183E-06 -2.1834E-07 1.2415E-08 -2.8417E-10 5.3850E-12 4 -1.1373 1.3867E-05 -6.9998E-06 2.2174E-06 -2.6305E-07 1.7917E-08 -6.2780E-10 9.0305E-12

[0224] Table 6

[0225] Table 7 below shows the paraxial curvature C of the free-form surfaces S1, S13, and S14 that can be used in Example 2. x 、C y , cone coefficient K x , K y And the coefficients of higher-order terms AR, BR, CR, DR, ER, FR, GR, and HR.

[0226] Surf <![CDATA[C x ]]> <![CDATA[C y ]]> <![CDATA[K x ]]> <![CDATA[K y ]]> AR BR 1 5.0556E-02 2.4209E-02 -9.4797E+00 -1.2212E+02 -5.4671E-07 -7.1255E-06 13 8.3031E-02 1.2748E-01 -1.3977E+00 4.1323E-01 -2.2735E-03 1.3695E-06 14 -4.2755E-02 -5.2506E-03 -4.6282E+01 -1.5000E+02 -8.6373E-04 1.5499E-06 Surf CR DR ER FR GR HR 1 8.5396E-08 3.3372E-09 -8.1573E-11 -1.9996E-13 1.1919E-14 0.0000E+00 13 -2.5791E-06 4.2284E-07 -8.1568E-08 5.5084E-09 -1.0838E-10 0.0000E+00 14 -4.8289E-06 4.4881E-07 -3.6046E-08 1.5612E-09 -2.2984E-11 0.0000E+00

[0227] Table 7

[0228] Table 8 below shows the coefficients of higher-order terms AP, BP, CP, DP, EP, FP, GP, and HP that can be used in the free-form surfaces S1, S13, and S14 in Example 2.

[0229]

[0230]

[0231] Table 8

[0232] Example 3

[0233] like Figure 5 FIG3 shows a cross-sectional view of the optical imaging lens of Example 3 in the YZ plane. Figure 6 A cross-sectional view of the optical imaging lens of Example 3 in the XZ plane is shown.

[0234] like Figure 5 and Figure 6 As shown, the optical imaging lens includes, from the object side to the image side, a first lens L1, a second lens L2, a third lens L3, an aperture STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter L8, a first side surface S17 of the protective glass, a second side surface S18 of the protective glass, and an imaging surface IMA.

[0235] The first lens L1 has negative optical power, with its first side surface S1 being convex and its second side surface S2 being concave. The second lens L2 has negative optical power, with its first side surface S3 being concave and its second side surface S4 being convex. The third lens L3 has positive optical power, with its first side surface S5 being convex and its second side surface S6 being concave. The fourth lens L4 has positive optical power, with its first side surface S8 being convex and its second side surface S9 being convex. The fifth lens L5 has positive optical power, with its first side surface S10 being convex and its second side surface S11 being convex. The sixth lens L6 has negative optical power, with its first side surface S11 being concave and its second side surface S12 being concave. The seventh lens L7 has positive optical power, with its first side surface S13 being convex and its second side surface S14 being convex. The filter L8 has a first side surface S15 and a second side surface S16. Light from the object passes through the surfaces S1 to S18 in sequence and is finally imaged on the molding surface IMA.

[0236] In this example, the focal length Fx of the optical imaging lens in the XZ plane is 4.917mm, the focal length Fy of the optical imaging lens in the YZ plane is 4.180mm, the maximum field of view FOVx of the optical imaging lens in the XZ plane is 100°, the maximum field of view FOVy of the optical imaging lens in the YZ plane is 70°, and the total length (TTL) of the optical imaging lens is 30.720mm. The fifth and sixth lenses are cemented lenses, so the second side surface of the fifth lens and the first side surface of the sixth lens are both S11. However, since the first and second side surfaces have different surface shapes even though the radius of curvature is the same, the second side surface S11 of the fifth lens is convex, and the first side surface S11 of the sixth lens is concave.

[0237] Table 9 shows the basic structural parameters of the optical imaging lens of Example 3, where the units of curvature radius and thickness / distance are all millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity represents infinity.

[0238]

[0239]

[0240] Table 9

[0241] Table 10 below shows the conic coefficient k and the coefficients of the higher-order terms that can be used for the aspherical lens surfaces S2, S3, and S4 in Example 3.

[0242] Surf K A B C D E F G 2 -0.1409 -2.4465E-05 -1.1470E-05 6.9295E-08 -3.3830E-09 -6.2853E-10 0.00E+00 -0.1409 3 0.6198 8.4463E-04 8.2222E-06 2.5040E-06 -2.3052E-07 1.2520E-08 -1.6349E-10 0.6198 4 -1.3635 5.7096E-05 -5.5627E-06 2.1685E-06 -2.6479E-07 1.7898E-08 -6.2088E-10 -1.3635

[0243] Table 10

[0244] Table 11 below shows the paraxial curvature C of the free-form surfaces S1, S13, and S14 that can be used in Example 3. x 、C y , cone coefficient K x , K y And the coefficients of higher-order terms AR, BR, CR, DR, ER, FR, GR, and HR.

[0245] Surf <![CDATA[C x ]]> <![CDATA[C y ]]> <![CDATA[K x ]]> <![CDATA[K y ]]> AR BR 1 5.6133E-02 2.1909E-02 -1.0564E+01 -2.0000E+02 -2.5628E-05 -9.5554E-06 13 8.7893E-02 1.3874E-01 -1.5728E+00 8.8493E-02 -2.7699E-03 4.7393E-13 14 -4.7605E-02 -5.2506E-03 -3.5818E+01 1.9920E+02 -2.3516E-03 3.2681E-07 Surf CR DR ER FR GR HR 1 1.1655E-07 6.7722E-09 -2.0273E-10 -5.8433E-13 3.3794E-14 9.7117E-16 13 -5.3945E-06 4.0439E-07 -8.2078E-08 6.0341E-09 -2.4409E-10 0.0000E+00 14 -7.3052E-06 5.2760E-07 -3.0530E-08 1.3174E-09 -2.7906E-11 0.0000E+00

[0246] Table 11

[0247] Table 12 below shows the coefficients of higher-order terms AP, BP, CP, DP, EP, FP, GP, and HP that can be used in the free-form surfaces S1, S13, and S14 in Example 3.

[0248] Surf AP BP CP DP EP FP GP HP 1 1.6096E+00 2.4524E-01 2.1981E-01 7.3687E-01 7.6544E-01 2.5723E-01 8.0491E-01 5.0726E-01 13 -1.0968E-02 -7.0627E+00 1.9797E-01 2.5483E-01 1.9534E-02 -6.5964E-02 -1.0685E-01 0.0000E+00 14 -5.3143E-02 -2.2417E+00 2.8130E-01 3.1611E-01 1.9251E-01 6.5811E-02 1.9193E-02 0.0000E+00

[0249] Table 12

[0250] Example 4

[0251] like Figure 7 FIG4 shows a cross-sectional view of the optical imaging lens of Example 4 in the YZ plane. Figure 8 A cross-sectional view of the optical imaging lens of Example 4 in the XZ plane is shown.

[0252] like Figure 7 and Figure 8 As shown, the optical imaging lens includes, from the object side to the image side, a first lens L1, a second lens L2, a third lens L3, an aperture STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter L8, a first side surface S17 of the protective glass, a second side surface S18 of the protective glass, and an imaging surface IMA.

[0253] The first lens L1 has negative optical power, with its first side surface S1 being convex and its second side surface S2 being concave. The second lens L2 has negative optical power, with its first side surface S3 being concave and its second side surface S4 being convex. The third lens L3 has positive optical power, with its first side surface S5 being convex and its second side surface S6 being concave. The fourth lens L4 has positive optical power, with its first side surface S8 being convex and its second side surface S9 being convex. The fifth lens L5 has positive optical power, with its first side surface S10 being convex and its second side surface S11 being convex. The sixth lens L6 has negative optical power, with its first side surface S11 being concave and its second side surface S12 being concave. The seventh lens L7 has positive optical power, with its first side surface S13 being convex and its second side surface S14 being convex. The filter L8 has a first side surface S15 and a second side surface S16. Light from the object passes through the surfaces S1 to S18 in sequence and is finally imaged on the molding surface IMA.

[0254] In this example, the focal length Fx of the optical imaging lens in the XZ plane is 4.880mm, the focal length Fy of the optical imaging lens in the YZ plane is 4.168mm, the maximum field of view FOVx of the optical imaging lens in the XZ plane is 100°, the maximum field of view FOVy of the optical imaging lens in the YZ plane is 70°, and the total length (TTL) of the optical imaging lens is 30.720mm. The fifth and sixth lenses are cemented lenses, so the second side surface of the fifth lens and the first side surface of the sixth lens are both S11. However, since the first and second side surfaces have different surface shapes even though the radii of curvature are the same, the second side surface S11 of the fifth lens is convex, and the first side surface S11 of the sixth lens is concave.

[0255] Table 13 shows the basic structural parameters of the optical imaging lens of Example 4, where the units of curvature radius and thickness / distance are all millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity represents infinity.

[0256]

[0257]

[0258] Table 13

[0259] Table 14 below shows the conic coefficient k and the coefficients of the higher-order terms that can be used for the aspherical lens surfaces S2, S3, and S4 in Example 4.

[0260] Surf K A B C D E F G 2 -0.1195 -2.6578E-04 -1.0025E-05 -1.2472E-07 -2.0001E-08 2.2547E-11 0.0000E+00 0.0000E+00 3 0.6154 6.8723E-04 5.1831E-06 2.4666E-06 -2.0698E-07 1.3122E-08 -2.7669E-10 1.9711E-12 4 -1.4339 5.5554E-05 -6.6038E-06 2.1934E-06 -2.6342E-07 1.7822E-08 -6.0955E-10 8.4053E-12

[0261] Table 14

[0262] Table 15 below shows the paraxial curvature C of the free-form surfaces S1, S13, and S14 that can be used in Example 4. x 、C y , cone coefficient K x , K y And the coefficients of higher-order terms AR, BR, CR, DR, ER, FR, GR, and HR.

[0263] Surf <![CDATA[C x ]]> <![CDATA[C y ]]> <![CDATA[K x ]]> <![CDATA[K y ]]> AR BR 1 5.5867E-02 2.2038E-02 -1.4093E+01 -1.8631E+02 -8.1280E-05 -6.5608E-06 13 9.3412E-02 1.4007E-01 6.2514E-01 7.9912E-01 -1.7858E-03 7.0566E-06 14 -4.4816E-02 -5.2506E-03 -3.9033E+01 -1.9968E+02 -1.1838E-03 1.1407E-06 Surf CR DR ER FR GR HR 1 8.9782E-08 7.7166E-09 -2.6005E-10 -1.0745E-12 6.5986E-14 1.0896E-15 13 -3.7271E-06 4.4005E-07 -7.8884E-08 5.2249E-09 -9.8319E-11 0.0000E+00 14 -5.3625E-06 4.9427E-07 -3.1148E-08 1.2504E-09 -1.3775E-11 0.0000E+00

[0264] Table 15

[0265] Table 16 below shows the coefficients of higher-order terms AP, BP, CP, DP, EP, FP, GP, and HP that can be used in the free-form surfaces S1, S13, and S14 in Example 4.

[0266] Surf AP BP CP DP EP FP GP HP 1 6.5996E-01 2.2990E-01 8.0480E-02 6.1577E-01 6.7028E-01 2.9205E-01 7.6891E-01 4.4350E-01 13 1.7044E-03 3.1357E-02 3.2392E-01 2.1315E-01 3.8147E-02 -4.6048E-02 -1.0564E-01 0.0000E+00 14 -6.3329E-02 -1.0538E+00 3.3322E-01 2.7466E-01 2.0266E-01 1.0053E-01 5.4823E-02 0.0000E+00

[0267] Table 16

[0268] Example 5

[0269] like Figure 9 FIG4 shows a cross-sectional view of the optical imaging lens of Example 5 in the YZ plane, Figure 10 A cross-sectional view of the optical imaging lens of Example 5 in the XZ plane is shown.

[0270] like Figure 9 and Figure 10As shown, the optical imaging lens includes, from the object side to the image side, a first lens L1, a second lens L2, a third lens L3, an aperture STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter L8, a first side surface S17 of the protective glass, a second side surface S18 of the protective glass, and an imaging surface IMA.

[0271] The first lens L1 has negative optical power. Its first side surface S1 is concave in the YZ plane and convex in the XZ plane, while its second side surface S2 is concave. The second lens L2 has negative optical power. Its first side surface S3 is concave, while its second side surface S4 is convex. The third lens L3 has positive optical power. Its first side surface S5 is convex, while its second side surface S6 is concave. The fourth lens L4 has positive optical power. Its first side surface S8 is convex, while its second side surface S9 is convex. The fifth lens L5 has negative optical power. Its first side surface S10 is concave, while its second side surface S11 is concave. The sixth lens L6 has positive optical power. Its first side surface S11 is convex, while its second side surface S12 is concave. The seventh lens L7 has positive refractive power. Its first side surface S13 is convex, its second side surface S14 is concave in the YZ plane, and its second side surface S14 is convex in the XZ plane. The optical filter L8 has a first side surface S15 and a second side surface S16. Light from an object sequentially passes through surfaces S1 to S18 and is ultimately imaged on the molding surface IMA.

[0272] In this example, the focal length Fx of the optical imaging lens in the XZ plane is 5.113mm, the focal length Fy of the optical imaging lens in the YZ plane is 4.536mm, the maximum field of view FOVx of the optical imaging lens in the XZ plane is 100°, the maximum field of view FOVy of the optical imaging lens in the YZ plane is 90°, and the total length (TTL) of the optical imaging lens is 29.710mm. The fifth and sixth lenses are cemented lenses, so the second side surface of the fifth lens and the first side surface of the sixth lens are both S11. However, since the first and second side surfaces have different surface shapes even though the radii of curvature are the same, the second side surface S11 of the fifth lens is convex, and the first side surface S11 of the sixth lens is concave.

[0273] Table 17 shows the basic structural parameters of the optical imaging lens of Example 5, where the units of curvature radius and thickness / distance are all millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity represents infinity.

[0274] Surf Radius Thickness Nd Vd 1 Infinity 1.400 1.80 40.90 2 6.869 6.950 3 -5.530 3.260 1.83 42.70 4 -7.340 0.093 5 7.881 2.850 1.69 31.10 6 57.061 1.223 STO Infinity -0.383 8 7.400 3.100 1.62 63.40 9 -13.860 0.097 10 -35.930 0.850 1.85 23.80 11 3.651 2.200 1.50 81.60 12 32.600 1.204 13 \ 2.000 1.69 31.10 14 \ 1.000 15 Infinity 0.550 1.52 64.20 16 Infinity 2.689 17 Infinity 0.500 1.52 64.20 18 Infinity 0.125 IMA Infinity 0.000

[0275] Table 17

[0276] Table 18 below shows the conic coefficient k and the coefficients of the higher-order terms that can be used for the aspherical lens surfaces S2, S3, and S4 in Example 5.

[0277]

[0278]

[0279] Table 18

[0280] Table 19 below shows the paraxial curvature C of the free-form surfaces S1, S13, and S14 that can be used in Example 5. x 、C y , cone coefficient K x , K y And the coefficients of higher-order terms AR, BR, CR, DR, ER, FR, GR, and HR.

[0281] Surf <![CDATA[C x ]]> <![CDATA[C y ]]> <![CDATA[K x ]]> <![CDATA[K y ]]> AR BR 1 5.8764E-03 -2.2698E-02 2.0000E+02 3.5112E+01 6.5417E-07 -1.1604E-06 13 4.8064E-02 1.1189E-01 6.1877E-01 1.8625E+00 -7.1334E-04 -5.0779E-05 14 -2.7680E-02 3.9236E-02 -3.5760E+01 -9.9497E+00 8.9025E-06 -1.0029E-04 Surf CR DR ER FR GR HR 1 3.5947E-08 2.5952E-12 -1.7422E-11 3.0366E-13 -2.3415E-15 0.0000E+00 13 -9.2829E-08 1.3593E-07 -2.8631E-08 1.7751E-09 -2.7548E-11 2.1241E-13 14 4.7323E-06 -4.0332E-07 1.6679E-08 -5.2615E-10 2.5767E-11 -5.8228E-13

[0282] Table 19

[0283] Table 20 below shows the coefficients of higher-order terms AP, BP, CP, DP, EP, FP, GP, and HP that can be used in the free-form surfaces S1, S13, and S14 in Example 5.

[0284] Surf AP BP CP DP EP FP GP HP 1 -1.2125E+00 4.3247E-02 9.3150E-02 7.3273E-01 3.2330E-01 3.9654E-01 3.3083E-01 0.0000E+00 13 5.6348E-02 6.7883E-02 5.2788E-01 -1.4378E-01 -8.4831E-02 -1.0792E-01 -1.4741E-01 1.5122E-01 14 2.8657E+00 5.7864E-02 -1.2194E-01 -1.0116E-01 -8.0961E-02 2.9559E-02 1.6056E-01 1.1517E-01

[0285] Table 20

[0286] Example 6

[0287] like Figure 11 FIG4 shows a cross-sectional view of the optical imaging lens of Example 6 in the YZ plane, Figure 12 A cross-sectional view of the optical imaging lens of Example 6 in the XZ plane is shown.

[0288] like Figure 11 and Figure 12 As shown, the optical imaging lens includes, from the object side to the image side, a first lens L1, a second lens L2, a third lens L3, an aperture STO, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, a filter L8, a first side surface S17 of the protective glass, a second side surface S18 of the protective glass, and an imaging surface IMA.

[0289] The first lens L1 has negative optical power. Its first side surface S1 is concave in the YZ plane and convex in the XZ plane, while its second side surface S2 is concave. The second lens L2 has negative optical power. Its first side surface S3 is concave, while its second side surface S4 is convex. The third lens L3 has positive optical power. Its first side surface S5 is convex, while its second side surface S6 is concave. The fourth lens L4 has positive optical power. Its first side surface S8 is convex, while its second side surface S9 is convex. The fifth lens L5 has negative optical power. Its first side surface S10 is concave, while its second side surface S11 is concave. The sixth lens L6 has positive optical power. Its first side surface S11 is convex, while its second side surface S12 is concave. The seventh lens L7 has positive refractive power. Its first side surface S13 is convex, its second side surface S14 is concave in the YZ plane, and its second side surface S14 is convex in the XZ plane. The optical filter L8 has a first side surface S15 and a second side surface S16. Light from an object sequentially passes through surfaces S1 to S18 and is ultimately imaged on the molding surface IMA.

[0290] In this example, the focal length Fx of the optical imaging lens in the XZ plane is 4.879mm, the focal length Fy of the optical imaging lens in the YZ plane is 4.316mm, the maximum field of view FOVx of the optical imaging lens in the XZ plane is 100°, the maximum field of view FOVy of the optical imaging lens in the YZ plane is 90°, and the total length (TTL) of the optical imaging lens is 30.720mm. The fifth and sixth lenses are cemented lenses, so the second side surface of the fifth lens and the first side surface of the sixth lens are both S11. However, since the first and second side surfaces have different surface shapes even though the radius of curvature is the same, the second side surface S11 of the fifth lens is convex, and the first side surface S11 of the sixth lens is concave.

[0291] Table 21 shows the basic structural parameters of the optical imaging lens of Example 6, where the units of radius of curvature and thickness / distance are all millimeters (mm). Surf is the surface number of the lens, Nd is the refractive index, Vd is the Abbe number, and Infinity represents infinity.

[0292] Surf Radius Thickness Nd Vd 1 \ 1.405 1.80 40.90 2 6.156 6.067 3 -5.921 4.342 1.83 42.70 4 -8.473 0.100 5 8.475 4.875 1.69 31.10 6 36.300 0.283 STO Infinity -0.082 8 6.947 3.108 1.62 63.40 9 -9.472 0.100 10 -34.834 1.122 1.85 23.80 11 3.707 3.034 1.50 81.60 12 10.576 0.378 13 \ 1.682 1.69 31.10 14 \ 1.000 15 Infinity 0.550 1.52 64.20 16 Infinity 2.131 17 Infinity 0.500 1.52 64.20 18 Infinity 0.125 IMA Infinity 0.000

[0293] Table 21

[0294] Table 22 below shows the conic coefficient k and the coefficients of the higher-order terms that can be used for the aspherical lens surfaces S2, S3, and S4 in Example 6.

[0295] Surf K A B C D E F G 2 -0.1052 2.0874E-04 9.4626E-06 -4.1913E-07 3.2334E-08 -2.4800E-10 0.00E+00 0.00E+00 3 0.5186 4.7676E-05 -6.6982E-06 6.3457E-07 2.4534E-08 -8.2801E-09 5.0347E-10 -1.0444E-11 4 16.4037 8.4345E-04 4.8892E-05 -6.4106E-06 3.1150E-07 1.6939E-07 -2.6108E-08 1.1301E-09

[0296] Table 22

[0297] The paraxial curvature C of the free-form surfaces S1, S13, and S14 that can be used in Example 6 is shown in Table 23 below. x 、C y , cone coefficient K x , K y And the coefficients of higher-order terms AR, BR, CR, DR, ER, FR, GR, and HR.

[0298] Surf <![CDATA[C x ]]> <![CDATA[C y ]]> <![CDATA[K x ]]> <![CDATA[K y ]]> AR BR 1 2.3939E-02 -5.7593E-03 2.2728E+01 2.0005E+02 3.1935E-05 -3.2169E-08 13 9.5359E-02 1.5066E-01 -5.2125E+00 -1.9841E+00 6.3478E-06 3.9277E-05 14 -5.0393E-03 5.0180E-02 -2.0003E+02 -6.3548E+01 3.2659E-04 -6.6749E-05 Surf CR DR ER FR GR HR 1 1.5429E-09 -2.6259E-11 4.0026E-31 -1.0562E-13 1.6785E-15 0.0000E+00 13 -1.0997E-05 8.3544E-07 -4.0737E-08 3.8138E-10 3.2466E-14 0.0000E+00 14 4.5470E-06 -7.0269E-07 3.0133E-08 -6.2650E-10 -2.7806E-12 0.0000E+00

[0299] Table 23

[0300] Table 24 below shows the coefficients of higher-order terms AP, BP, CP, DP, EP, FP, GP, and HP that can be used in the free-form surfaces S1, S13, and S14 in Example 6.

[0301] Surf AP BP CP DP EP FP GP HP 1 -5.0450E-01 -1.6756E+00 -9.6198E-01 -6.4853E-01 7.0962E-01 4.2469E-01 4.5073E-01 0.0000E+00 13 1.2230E+00 3.1838E-01 1.8010E-01 1.6474E-01 1.0574E-01 -7.1056E-02 -1.8253E-01 0.0000E+00 14 1.3453E+00 1.8616E-01 -7.3959E-02 -4.6171E-02 -7.7527E-02 -4.9714E-02 -3.1546E-02 0.0000E+00

[0302] Table 24 In summary, Examples 1 to 8 respectively satisfy the relationships shown in Table 25.

[0303] Parameters / Examples 1 2 3 4 5 6 Fx / Fy 1.1719 1.1408 1.1763 1.1707 1.1273 1.1303 F1x / F1y 1.2485 1.2209 1.2804 1.2669 1.2240 1.2405 F7x / F7y 1.0992 1.0863 1.0980 1.0902 1.0214 1.0562 |F1x / Fx| 1.6516 1.8116 1.7918 1.7508 1.7372 1.8625 |F1y / Fy| 1.5503 1.6928 1.6462 1.6180 1.5999 1.6970 |F7x / Fx| 2.1228 2.3380 2.2483 2.2305 3.7737 2.9507 |F7y / Fy| 2.2631 2.4553 2.4086 2.3952 4.1647 3.1577 TTL / Hx / FOVx 0.0391 0.0353 0.0391 0.0376 0.0343 0.0351 TTL / Hx / θx 2.2428 2.0222 2.2382 2.1528 1.9657 2.0084 L2R1 / (L2R2+d2) 1.1587 1.1826 1.1209 1.0834 1.3554 1.4334 Dx / Hx / FOVx 0.0143 0.0128 0.0140 0.0138 0.0141 0.0146 Dx / Hx / θx 0.8189 0.7337 0.8036 0.7933 0.8084 0.8357 Dx / Hx / Fx 0.2930 0.2524 0.2853 0.2837 0.2759 0.2990 d67 / TTL 0.0146 0.0229 0.0117 0.0103 0.0405 0.0123 BFL / TTL 0.1172 0.1314 0.1265 0.1197 0.1637 0.1402 (FOVx×Fx) / Hx 62.1549 58.3010 62.5209 59.6868 59.0462 55.6692 L1R2 / Fx 0.9727 1.0365 0.9999 0.9901 1.3433 1.2618

[0304] Table 25

[0305] Table 26 shows the effective focal length F of the optical imaging lenses of Examples 1 to 6, the effective focal length F1 to F7 of each lens, etc. (unit: mm).

[0306] Parameters / Examples 1 2 3 4 5 6 Fx 4.878 5.075 4.917 4.880 5.113 4.879 Fy 4.163 4.448 4.180 4.168 4.536 4.316 F1x -8.056 -9.193 -8.810 -8.544 -8.883 -9.087 F1y -6.453 -7.530 -6.880 -6.744 -7.257 -7.325 F7x 10.355 11.864 11.054 10.885 19.296 14.396 F7Y 9.420 10.921 10.067 9.984 18.891 13.630 FOVx 100.000 100.000 100.000 100.000 100.000 100.000 FOVy 70.000 90.000 70.000 70.000 90.000 90.000 θx 1.745 1.745 1.745 1.745 1.745 1.745 θy 1.222 1.571 1.222 1.222 1.571 1.571 Hx 7.848 8.704 7.864 8.176 8.660 8.764 Hy 4.786 6.276 4.688 4.758 6.266 6.164 Dx 11.217 11.146 11.030 11.320 12.218 12.783 Dy 7.747 8.826 7.518 7.480 9.440 10.271 TTL 30.720 30.720 30.720 30.720 29.710 30.720 BFL 3.600 4.037 3.885 3.676 4.864 4.306 d67 0.448 0.703 0.359 0.316 1.204 0.378 L1R2 4.745 5.260 4.916 4.832 6.869 6.156 L2R1 -6.553 -6.533 -6.405 -6.328 -5.530 -5.921 L2R2 -10.455 -10.374 -10.715 -10.878 -7.340 -8.473 d2 4.800 4.850 5.000 5.037 3.260 4.342

[0307] Table 26

[0308] Obviously, the embodiments described above are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0309] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0310] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0311] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. An optical imaging lens, characterized in that: The optical imaging lens has only two symmetry planes, which are a YZ plane and an XZ plane. The YZ plane and the XZ plane are perpendicular to each other and intersect at the optical axis Z. The total number of lenses with optical power in the optical imaging lens is seven. The optical imaging lens includes: a first lens having negative optical power; a second lens having negative optical power, a first side surface of the second lens being concave, and a second side surface of the second lens being convex; a third lens having positive optical power; a fourth lens having positive optical power, a first side surface of the fourth lens being convex, and a second side surface of the fourth lens being convex; Fifth lens; a sixth lens, wherein one of the fifth lens and the sixth lens has positive refractive power, and the other has negative refractive power; a seventh lens having positive refractive power; The focal length Fx of the optical imaging lens along the XZ plane direction is different from the focal length Fy of the optical imaging lens along the YZ plane direction; The focal length F7x of the seventh lens along the XZ plane direction and the focal length Fx of the optical imaging lens along the XZ plane direction satisfy the following relationship: 1≤|F7x / Fx|≤3.7737; The focal length F7y of the seventh lens along the YZ plane and the focal length Fy of the optical imaging lens along the YZ plane satisfy the following relationship: 1≤|F7y / Fy|≤4.1647; A distance BFL from the center of the second side surface of the last lens element of the optical imaging lens to the center of the imaging plane of the optical imaging lens and a total optical length TTL of the optical imaging lens satisfy the following relationship: 0.06≤BFL / TTL≤0.1637; The first side surface is an object side surface, and the second side surface is an image side surface.

2. The optical imaging lens according to claim 1, wherein: The first side surface of the first lens is a convex surface, and the second side surface of the first lens is a concave surface.

3. The optical imaging lens according to claim 1, wherein: The first side surface of the first lens is concave in the YZ plane and convex in the XZ plane, and the second side surface of the second lens is concave.

4. The optical imaging lens according to claim 1, wherein: The first side surface of the third lens is a convex surface, and the second side surface of the third lens is a convex surface; or The first side surface of the third lens is a convex surface, and the second side surface of the third lens is a concave surface.

5. The optical imaging lens according to claim 1, wherein: The fifth lens and the sixth lens are cemented together to form a cemented lens.

6. The optical imaging lens according to claim 1, wherein: The fifth lens has positive optical power, the first side surface of the fifth lens is a convex surface, and the second side surface of the fifth lens is a convex surface.

7. The optical imaging lens according to claim 1, wherein: The fifth lens has negative optical power, a first side surface of the fifth lens is concave, and a second side surface of the fifth lens is concave.

8. The optical imaging lens according to claim 1, wherein: The sixth lens has negative optical power, a first side surface of the sixth lens is concave, and a second side surface of the sixth lens is concave.

9. The optical imaging lens according to claim 1, wherein: The sixth lens has positive optical power, the first side surface of the sixth lens is convex, and the second side surface of the sixth lens is concave.

10. The optical imaging lens according to claim 1, wherein: The first side surface of the seventh lens is a convex surface, and the second side surface of the seventh lens is a convex surface.

11. The optical imaging lens according to claim 1, wherein: The first side surface of the seventh lens is a convex surface, and the second side surface of the seventh lens is a concave surface in the YZ plane and a convex surface in the XZ plane.

12. The optical imaging lens according to claim 1, wherein: The optical imaging lens further includes a stop, which is disposed between the third lens and the fourth lens.

13. The optical imaging lens according to claim 1, wherein: The first lens and the seventh lens are free-form surface lenses, and the focal length of the first lens along the XZ plane is different from that in the YZ plane, and the focal length of the seventh lens along the XZ plane is different from that in the YZ plane.

14. The optical imaging lens according to any one of claims 1 to 13, wherein: A focal length F1x of the first lens along the XZ plane direction and a focal length F1y of the first lens along the YZ plane direction satisfy: 1<F1x / F1y≤2.

15. The optical imaging lens according to any one of claims 1 to 13, wherein: A focal length F7x of the seventh lens along the XZ plane direction and a focal length F7y of the seventh lens along the YZ plane direction satisfy the following relationship: 1<F7x / F7y≤2.

16. The optical imaging lens according to any one of claims 1 to 13, wherein: A focal length F1x of the first lens along the XZ plane direction and a focal length Fx of the optical imaging lens along the XZ plane direction satisfy the following relationship: 1≤|F1x / Fx|≤1.8625.

17. The optical imaging lens according to any one of claims 1 to 13, wherein: A focal length F1y of the first lens along the YZ plane direction and a focal length Fy of the optical imaging lens along the YZ plane direction satisfy the following relationship: 1≤|F1y / Fy|≤1.6970.

18. The optical imaging lens according to any one of claims 1 to 13, wherein: The total optical length TTL of the optical imaging lens, the image height Hx in the XZ plane direction corresponding to the maximum field of view of the optical imaging lens, and the maximum field of view FOVx in the XZ plane direction of the optical imaging lens satisfy the following conditions: 0.0343≤TTL / Hx / FOVx≤0.

08.

19. The optical imaging lens according to any one of claims 1 to 13, wherein: The total optical length TTL of the optical imaging lens, the image height Hx in the XZ plane direction corresponding to the maximum field of view of the optical imaging lens, and the arc θx of the maximum field of view of the optical imaging lens in the XZ plane direction satisfy the following: 1.9657≤TTL / Hx / θx≤5.

20. The optical imaging lens according to any one of claims 1 to 13, wherein: A curvature radius L2R1 of the first side surface of the second lens, a curvature radius L2R2 of the second side surface of the second lens, and a center thickness d2 of the second lens satisfy the following relationship: 0.6≤L2R1 / (L2R2+d2)≤2.

21. The optical imaging lens according to any one of claims 1 to 13, wherein: The following conditions are satisfied among the clear aperture Dx of the first side surface of the first lens in the XZ plane direction corresponding to the maximum field of view of the optical imaging lens, the image height Hx in the XZ plane direction corresponding to the maximum field of view of the optical imaging lens, and the maximum field of view FOVx of the optical imaging lens in the XZ plane direction: 0.0128≤Dx / Hx / FOVx≤0.

05.

22. The optical imaging lens according to any one of claims 1 to 13, wherein: The following conditions are satisfied: a clear aperture Dx of the first side surface of the first lens in the XZ plane direction corresponding to the maximum field of view of the optical imaging lens, an image height Hx in the XZ plane direction corresponding to the maximum field of view of the optical imaging lens, and an arc θx in the XZ plane direction of the maximum field of view of the optical imaging lens.

23. The optical imaging lens according to any one of claims 1 to 13, wherein: The clear aperture Dx of the first side surface of the first lens in the XZ plane direction corresponding to the maximum field of view of the optical imaging lens, the image height Hx in the XZ plane direction corresponding to the maximum field of view of the optical imaging lens, and the focal length Fx of the optical imaging lens in the XZ plane direction satisfy the following: 0.2524≤Dx / Hx / Fx≤0.

55.

24. The optical imaging lens according to any one of claims 1 to 13, wherein: A distance d67 between the sixth lens and the seventh lens and a total optical length TTL of the optical imaging lens satisfy the following relationship: 0.0103≤d67 / TTL≤0.

08.

25. The optical imaging lens according to any one of claims 1 to 13, wherein: The maximum field of view FOVx of the optical imaging lens in the XZ plane direction, the focal length Fx of the optical imaging lens along the XZ plane direction, and the image height Hx in the XZ plane direction corresponding to the maximum field of view of the optical imaging lens satisfy the following: 50≤(FOVx×Fx) / Hx≤62.5209.

26. The optical imaging lens according to any one of claims 1 to 13, wherein: The curvature radius L1R2 of the first side surface of the first lens and the focal length Fx of the optical imaging lens along the XZ plane direction satisfy the following relationship: 0.9727≤L1R2 / Fx≤3.

27. The optical imaging lens according to any one of claims 1 to 13, wherein: The optical imaging lens meets at least one of the following requirements: 1<Fx / Fy≤1.6, 1<F1x / F1y≤1.6, 1<F7x / F7y≤1.6, 1.3≤|F1x / Fx|≤1.8625, 1.3≤|F1y / Fy|≤1.6970, 1. 3≤|F7x / Fx|≤3.7737, 1.3≤|F7y / Fy|≤4.1647, 0.0343≤TTL / Hx / FOVx≤0.06, 1.9657≤TTL / Hx / θx≤4, 0. 8≤L2R1 / (L2R2+d2)≤1.7, 0.0128≤Dx / Hx / FOVx≤0.03, 0.7337≤Dx / Hx / θx≤1.7, 0.2524≤Dx / Hx / Fx≤0.4 5. 0.0103≤d67 / TTL≤0.06, 0.08≤BFL / TTL≤0.1637, 53≤(FOVx×Fx) / Hx≤62.5209, 0.9727≤L1R2 / Fx≤2; Wherein, Fx is the focal length of the optical imaging lens along the XZ plane direction; Fy is the focal length of the optical imaging lens along the YZ plane direction; F1x is the focal length of the first lens along the XZ plane direction; F1y is the focal length of the first lens along the YZ plane direction; F7x is the focal length of the seventh lens along the XZ plane direction; F7y is the focal length of the seventh lens along the YZ plane direction; TTL is the total optical length of the optical imaging lens; Hx is the image height in the XZ plane direction corresponding to the maximum field of view of the optical imaging lens; FOVx is the maximum field of view of the optical imaging lens in the XZ plane direction; θx is the arc of the maximum field of view of the optical imaging lens in the XZ plane direction; L2R1 is the curvature radius of the first side surface of the second lens; L2R2 is the curvature radius of the second side surface of the second lens; d2 is the center thickness of the second lens; Dx is the light-clearing aperture of the first side surface of the first lens in the XZ plane direction corresponding to the maximum field of view of the optical imaging lens; d67 is the distance between the sixth lens and the seventh lens; BFL is the distance from the center of the second side surface of the last lens of the optical imaging lens to the center of the imaging surface of the optical imaging lens; L1R2 is the curvature radius of the first side surface of the first lens.

28. The optical imaging lens according to any one of claims 1 to 13, wherein: The optical imaging lens meets at least one of the following requirements: 1.1273≤Fx / Fy≤1.1763, 1.2209≤F1x / F1y≤1.2804, 1.0214≤F7x / F7y≤1.0992, 1.6516≤|F1x / Fx|≤1.8625, 1.5503≤|F1y / F y|≤1.6970, 2.1228≤|F7x / Fx|≤3.7737, 2.2631≤|F7y / Fy|≤4.1647, 0.0343≤TTL / Hx / FOVx≤0.0391, 1.9657≤TTL / Hx / θx≤2 .2428, 1.0834≤L2R1 / (L2R2+d2)≤1.4334, 0.0128≤Dx / Hx / FOVx≤0.0146, 0.7337≤Dx / Hx / θx≤0.8357, 0.2524≤Dx / Hx / Fx≤0 .299, 0.0103≤d67 / TTL≤0.0405, 0.1172≤BFL / TTL≤0.1637, 55.6692≤(FOVx×Fx) / Hx≤62.5209, 0.9727≤L1R2 / Fx≤1.3433; Wherein, Fx is the focal length of the optical imaging lens along the XZ plane direction; Fy is the focal length of the optical imaging lens along the YZ plane direction; F1x is the focal length of the first lens along the XZ plane direction; F1y is the focal length of the first lens along the YZ plane direction; F7x is the focal length of the seventh lens along the XZ plane direction; F7y is the focal length of the seventh lens along the YZ plane direction; TTL is the total optical length of the optical imaging lens; Hx is the image height in the XZ plane direction corresponding to the maximum field of view of the optical imaging lens; FOVx is the maximum field of view of the optical imaging lens in the XZ plane direction; θx is the arc of the maximum field of view of the optical imaging lens in the XZ plane direction; L2R1 is the curvature radius of the first side surface of the second lens; L2R2 is the curvature radius of the second side surface of the second lens; d2 is the center thickness of the second lens; Dx is the light-clearing aperture of the first side surface of the first lens in the XZ plane direction corresponding to the maximum field of view of the optical imaging lens; d67 is the distance between the sixth lens and the seventh lens; BFL is the distance from the center of the second side surface of the last lens of the optical imaging lens to the center of the imaging surface of the optical imaging lens; L1R2 is the curvature radius of the first side surface of the first lens.

29. An electronic device, characterized in that: The optical imaging lens comprises the optical imaging lens according to any one of claims 1 to 28 and an imaging element for converting an optical image formed by the optical imaging lens into an electrical signal.

Images